diff --git a/vendor/sqlite/include/sqlite3.h b/vendor/sqlite/include/sqlite3.h index 4427d2fa2..ec451a5ca 100644 --- a/vendor/sqlite/include/sqlite3.h +++ b/vendor/sqlite/include/sqlite3.h @@ -43,7 +43,30 @@ extern "C" { /* -** Provide the ability to override linkage features of the interface. +** Facilitate override of interface linkage and calling conventions. +** Be aware that these macros may not be used within this particular +** translation of the amalgamation and its associated header file. +** +** The SQLITE_EXTERN and SQLITE_API macros are used to instruct the +** compiler that the target identifier should have external linkage. +** +** The SQLITE_CDECL macro is used to set the calling convention for +** public functions that accept a variable number of arguments. +** +** The SQLITE_APICALL macro is used to set the calling convention for +** public functions that accept a fixed number of arguments. +** +** The SQLITE_STDCALL macro is no longer used and is now deprecated. +** +** The SQLITE_CALLBACK macro is used to set the calling convention for +** function pointers. +** +** The SQLITE_SYSAPI macro is used to set the calling convention for +** functions provided by the operating system. +** +** Currently, the SQLITE_CDECL, SQLITE_APICALL, SQLITE_CALLBACK, and +** SQLITE_SYSAPI macros are used only when building for environments +** that require non-default calling conventions. */ #ifndef SQLITE_EXTERN # define SQLITE_EXTERN extern @@ -108,7 +131,7 @@ extern "C" { ** be held constant and Z will be incremented or else Y will be incremented ** and Z will be reset to zero. ** -** Since [version 3.6.18] ([dateof:3.6.18]), +** Since [version 3.6.18] ([dateof:3.6.18]), ** SQLite source code has been stored in the ** Fossil configuration management ** system. ^The SQLITE_SOURCE_ID macro evaluates to @@ -123,9 +146,9 @@ extern "C" { ** [sqlite3_libversion_number()], [sqlite3_sourceid()], ** [sqlite_version()] and [sqlite_source_id()]. */ -#define SQLITE_VERSION "3.24.0" -#define SQLITE_VERSION_NUMBER 3024000 -#define SQLITE_SOURCE_ID "2018-06-04 19:24:41 c7ee0833225bfd8c5ec2f9bf62b97c4e04d03bd9566366d5221ac8fb199a87ca" +#define SQLITE_VERSION "3.43.0" +#define SQLITE_VERSION_NUMBER 3043000 +#define SQLITE_SOURCE_ID "2023-08-24 12:36:59 0f80b798b3f4b81a7bb4233c58294edd0f1156f36b6ecf5ab8e83631d468778c" /* ** CAPI3REF: Run-Time Library Version Numbers @@ -151,8 +174,8 @@ extern "C" { ** function is provided for use in DLLs since DLL users usually do not have ** direct access to string constants within the DLL. ^The ** sqlite3_libversion_number() function returns an integer equal to -** [SQLITE_VERSION_NUMBER]. ^(The sqlite3_sourceid() function returns -** a pointer to a string constant whose value is the same as the +** [SQLITE_VERSION_NUMBER]. ^(The sqlite3_sourceid() function returns +** a pointer to a string constant whose value is the same as the ** [SQLITE_SOURCE_ID] C preprocessor macro. Except if SQLite is built ** using an edited copy of [the amalgamation], then the last four characters ** of the hash might be different from [SQLITE_SOURCE_ID].)^ @@ -167,20 +190,20 @@ SQLITE_API int sqlite3_libversion_number(void); /* ** CAPI3REF: Run-Time Library Compilation Options Diagnostics ** -** ^The sqlite3_compileoption_used() function returns 0 or 1 -** indicating whether the specified option was defined at -** compile time. ^The SQLITE_ prefix may be omitted from the -** option name passed to sqlite3_compileoption_used(). +** ^The sqlite3_compileoption_used() function returns 0 or 1 +** indicating whether the specified option was defined at +** compile time. ^The SQLITE_ prefix may be omitted from the +** option name passed to sqlite3_compileoption_used(). ** ** ^The sqlite3_compileoption_get() function allows iterating ** over the list of options that were defined at compile time by ** returning the N-th compile time option string. ^If N is out of range, -** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ -** prefix is omitted from any strings returned by +** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ +** prefix is omitted from any strings returned by ** sqlite3_compileoption_get(). ** ** ^Support for the diagnostic functions sqlite3_compileoption_used() -** and sqlite3_compileoption_get() may be omitted by specifying the +** and sqlite3_compileoption_get() may be omitted by specifying the ** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time. ** ** See also: SQL functions [sqlite_compileoption_used()] and @@ -189,6 +212,9 @@ SQLITE_API int sqlite3_libversion_number(void); #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS SQLITE_API int sqlite3_compileoption_used(const char *zOptName); SQLITE_API const char *sqlite3_compileoption_get(int N); +#else +# define sqlite3_compileoption_used(X) 0 +# define sqlite3_compileoption_get(X) ((void*)0) #endif /* @@ -201,7 +227,7 @@ SQLITE_API const char *sqlite3_compileoption_get(int N); ** SQLite can be compiled with or without mutexes. When ** the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes ** are enabled and SQLite is threadsafe. When the -** [SQLITE_THREADSAFE] macro is 0, +** [SQLITE_THREADSAFE] macro is 0, ** the mutexes are omitted. Without the mutexes, it is not safe ** to use SQLite concurrently from more than one thread. ** @@ -258,14 +284,14 @@ typedef struct sqlite3 sqlite3; ** ** ^The sqlite3_int64 and sqlite_int64 types can store integer values ** between -9223372036854775808 and +9223372036854775807 inclusive. ^The -** sqlite3_uint64 and sqlite_uint64 types can store integer values +** sqlite3_uint64 and sqlite_uint64 types can store integer values ** between 0 and +18446744073709551615 inclusive. */ #ifdef SQLITE_INT64_TYPE typedef SQLITE_INT64_TYPE sqlite_int64; # ifdef SQLITE_UINT64_TYPE typedef SQLITE_UINT64_TYPE sqlite_uint64; -# else +# else typedef unsigned SQLITE_INT64_TYPE sqlite_uint64; # endif #elif defined(_MSC_VER) || defined(__BORLANDC__) @@ -296,26 +322,22 @@ typedef sqlite_uint64 sqlite3_uint64; ** the [sqlite3] object is successfully destroyed and all associated ** resources are deallocated. ** -** ^If the database connection is associated with unfinalized prepared -** statements or unfinished sqlite3_backup objects then sqlite3_close() -** will leave the database connection open and return [SQLITE_BUSY]. -** ^If sqlite3_close_v2() is called with unfinalized prepared statements -** and/or unfinished sqlite3_backups, then the database connection becomes -** an unusable "zombie" which will automatically be deallocated when the -** last prepared statement is finalized or the last sqlite3_backup is -** finished. The sqlite3_close_v2() interface is intended for use with -** host languages that are garbage collected, and where the order in which -** destructors are called is arbitrary. -** -** Applications should [sqlite3_finalize | finalize] all [prepared statements], -** [sqlite3_blob_close | close] all [BLOB handles], and +** Ideally, applications should [sqlite3_finalize | finalize] all +** [prepared statements], [sqlite3_blob_close | close] all [BLOB handles], and ** [sqlite3_backup_finish | finish] all [sqlite3_backup] objects associated -** with the [sqlite3] object prior to attempting to close the object. ^If -** sqlite3_close_v2() is called on a [database connection] that still has -** outstanding [prepared statements], [BLOB handles], and/or -** [sqlite3_backup] objects then it returns [SQLITE_OK] and the deallocation -** of resources is deferred until all [prepared statements], [BLOB handles], -** and [sqlite3_backup] objects are also destroyed. +** with the [sqlite3] object prior to attempting to close the object. +** ^If the database connection is associated with unfinalized prepared +** statements, BLOB handlers, and/or unfinished sqlite3_backup objects then +** sqlite3_close() will leave the database connection open and return +** [SQLITE_BUSY]. ^If sqlite3_close_v2() is called with unfinalized prepared +** statements, unclosed BLOB handlers, and/or unfinished sqlite3_backups, +** it returns [SQLITE_OK] regardless, but instead of deallocating the database +** connection immediately, it marks the database connection as an unusable +** "zombie" and makes arrangements to automatically deallocate the database +** connection after all prepared statements are finalized, all BLOB handles +** are closed, and all backups have finished. The sqlite3_close_v2() interface +** is intended for use with host languages that are garbage collected, and +** where the order in which destructors are called is arbitrary. ** ** ^If an [sqlite3] object is destroyed while a transaction is open, ** the transaction is automatically rolled back. @@ -345,7 +367,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**); ** The sqlite3_exec() interface is a convenience wrapper around ** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()], ** that allows an application to run multiple statements of SQL -** without having to use a lot of C code. +** without having to use a lot of C code. ** ** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded, ** semicolon-separate SQL statements passed into its 2nd argument, @@ -385,7 +407,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**); ** from [sqlite3_column_name()]. ** ** ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer -** to an empty string, or a pointer that contains only whitespace and/or +** to an empty string, or a pointer that contains only whitespace and/or ** SQL comments, then no SQL statements are evaluated and the database ** is not changed. ** @@ -472,6 +494,7 @@ SQLITE_API int sqlite3_exec( */ #define SQLITE_ERROR_MISSING_COLLSEQ (SQLITE_ERROR | (1<<8)) #define SQLITE_ERROR_RETRY (SQLITE_ERROR | (2<<8)) +#define SQLITE_ERROR_SNAPSHOT (SQLITE_ERROR | (3<<8)) #define SQLITE_IOERR_READ (SQLITE_IOERR | (1<<8)) #define SQLITE_IOERR_SHORT_READ (SQLITE_IOERR | (2<<8)) #define SQLITE_IOERR_WRITE (SQLITE_IOERR | (3<<8)) @@ -503,16 +526,23 @@ SQLITE_API int sqlite3_exec( #define SQLITE_IOERR_BEGIN_ATOMIC (SQLITE_IOERR | (29<<8)) #define SQLITE_IOERR_COMMIT_ATOMIC (SQLITE_IOERR | (30<<8)) #define SQLITE_IOERR_ROLLBACK_ATOMIC (SQLITE_IOERR | (31<<8)) +#define SQLITE_IOERR_DATA (SQLITE_IOERR | (32<<8)) +#define SQLITE_IOERR_CORRUPTFS (SQLITE_IOERR | (33<<8)) +#define SQLITE_IOERR_IN_PAGE (SQLITE_IOERR | (34<<8)) #define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) #define SQLITE_LOCKED_VTAB (SQLITE_LOCKED | (2<<8)) #define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) #define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8)) +#define SQLITE_BUSY_TIMEOUT (SQLITE_BUSY | (3<<8)) #define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8)) #define SQLITE_CANTOPEN_ISDIR (SQLITE_CANTOPEN | (2<<8)) #define SQLITE_CANTOPEN_FULLPATH (SQLITE_CANTOPEN | (3<<8)) #define SQLITE_CANTOPEN_CONVPATH (SQLITE_CANTOPEN | (4<<8)) +#define SQLITE_CANTOPEN_DIRTYWAL (SQLITE_CANTOPEN | (5<<8)) /* Not Used */ +#define SQLITE_CANTOPEN_SYMLINK (SQLITE_CANTOPEN | (6<<8)) #define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8)) #define SQLITE_CORRUPT_SEQUENCE (SQLITE_CORRUPT | (2<<8)) +#define SQLITE_CORRUPT_INDEX (SQLITE_CORRUPT | (3<<8)) #define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8)) #define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8)) #define SQLITE_READONLY_ROLLBACK (SQLITE_READONLY | (3<<8)) @@ -530,11 +560,15 @@ SQLITE_API int sqlite3_exec( #define SQLITE_CONSTRAINT_UNIQUE (SQLITE_CONSTRAINT | (8<<8)) #define SQLITE_CONSTRAINT_VTAB (SQLITE_CONSTRAINT | (9<<8)) #define SQLITE_CONSTRAINT_ROWID (SQLITE_CONSTRAINT |(10<<8)) +#define SQLITE_CONSTRAINT_PINNED (SQLITE_CONSTRAINT |(11<<8)) +#define SQLITE_CONSTRAINT_DATATYPE (SQLITE_CONSTRAINT |(12<<8)) #define SQLITE_NOTICE_RECOVER_WAL (SQLITE_NOTICE | (1<<8)) #define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8)) +#define SQLITE_NOTICE_RBU (SQLITE_NOTICE | (3<<8)) #define SQLITE_WARNING_AUTOINDEX (SQLITE_WARNING | (1<<8)) #define SQLITE_AUTH_USER (SQLITE_AUTH | (1<<8)) #define SQLITE_OK_LOAD_PERMANENTLY (SQLITE_OK | (1<<8)) +#define SQLITE_OK_SYMLINK (SQLITE_OK | (2<<8)) /* internal use only */ /* ** CAPI3REF: Flags For File Open Operations @@ -542,6 +576,19 @@ SQLITE_API int sqlite3_exec( ** These bit values are intended for use in the ** 3rd parameter to the [sqlite3_open_v2()] interface and ** in the 4th parameter to the [sqlite3_vfs.xOpen] method. +** +** Only those flags marked as "Ok for sqlite3_open_v2()" may be +** used as the third argument to the [sqlite3_open_v2()] interface. +** The other flags have historically been ignored by sqlite3_open_v2(), +** though future versions of SQLite might change so that an error is +** raised if any of the disallowed bits are passed into sqlite3_open_v2(). +** Applications should not depend on the historical behavior. +** +** Note in particular that passing the SQLITE_OPEN_EXCLUSIVE flag into +** [sqlite3_open_v2()] does *not* cause the underlying database file +** to be opened using O_EXCL. Passing SQLITE_OPEN_EXCLUSIVE into +** [sqlite3_open_v2()] has historically be a no-op and might become an +** error in future versions of SQLite. */ #define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */ @@ -557,14 +604,19 @@ SQLITE_API int sqlite3_exec( #define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 /* VFS only */ #define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 /* VFS only */ #define SQLITE_OPEN_SUBJOURNAL 0x00002000 /* VFS only */ -#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ +#define SQLITE_OPEN_SUPER_JOURNAL 0x00004000 /* VFS only */ #define SQLITE_OPEN_NOMUTEX 0x00008000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_FULLMUTEX 0x00010000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_SHAREDCACHE 0x00020000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_WAL 0x00080000 /* VFS only */ +#define SQLITE_OPEN_NOFOLLOW 0x01000000 /* Ok for sqlite3_open_v2() */ +#define SQLITE_OPEN_EXRESCODE 0x02000000 /* Extended result codes */ /* Reserved: 0x00F00000 */ +/* Legacy compatibility: */ +#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ + /* ** CAPI3REF: Device Characteristics @@ -620,13 +672,17 @@ SQLITE_API int sqlite3_exec( ** ** SQLite uses one of these integer values as the second ** argument to calls it makes to the xLock() and xUnlock() methods -** of an [sqlite3_io_methods] object. +** of an [sqlite3_io_methods] object. These values are ordered from +** lest restrictive to most restrictive. +** +** The argument to xLock() is always SHARED or higher. The argument to +** xUnlock is either SHARED or NONE. */ -#define SQLITE_LOCK_NONE 0 -#define SQLITE_LOCK_SHARED 1 -#define SQLITE_LOCK_RESERVED 2 -#define SQLITE_LOCK_PENDING 3 -#define SQLITE_LOCK_EXCLUSIVE 4 +#define SQLITE_LOCK_NONE 0 /* xUnlock() only */ +#define SQLITE_LOCK_SHARED 1 /* xLock() or xUnlock() */ +#define SQLITE_LOCK_RESERVED 2 /* xLock() only */ +#define SQLITE_LOCK_PENDING 3 /* xLock() only */ +#define SQLITE_LOCK_EXCLUSIVE 4 /* xLock() only */ /* ** CAPI3REF: Synchronization Type Flags @@ -661,7 +717,7 @@ SQLITE_API int sqlite3_exec( /* ** CAPI3REF: OS Interface Open File Handle ** -** An [sqlite3_file] object represents an open file in the +** An [sqlite3_file] object represents an open file in the ** [sqlite3_vfs | OS interface layer]. Individual OS interface ** implementations will ** want to subclass this object by appending additional fields @@ -683,7 +739,7 @@ struct sqlite3_file { ** This object defines the methods used to perform various operations ** against the open file represented by the [sqlite3_file] object. ** -** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element +** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element ** to a non-NULL pointer, then the sqlite3_io_methods.xClose method ** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The ** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen] @@ -704,7 +760,14 @@ struct sqlite3_file { **
  • [SQLITE_LOCK_PENDING], or **
  • [SQLITE_LOCK_EXCLUSIVE]. ** -** xLock() increases the lock. xUnlock() decreases the lock. +** xLock() upgrades the database file lock. In other words, xLock() moves the +** database file lock in the direction NONE toward EXCLUSIVE. The argument to +** xLock() is always on of SHARED, RESERVED, PENDING, or EXCLUSIVE, never +** SQLITE_LOCK_NONE. If the database file lock is already at or above the +** requested lock, then the call to xLock() is a no-op. +** xUnlock() downgrades the database file lock to either SHARED or NONE. +* If the lock is already at or below the requested lock state, then the call +** to xUnlock() is a no-op. ** The xCheckReservedLock() method checks whether any database connection, ** either in this process or in some other process, is holding a RESERVED, ** PENDING, or EXCLUSIVE lock on the file. It returns true @@ -809,9 +872,8 @@ struct sqlite3_io_methods { ** opcode causes the xFileControl method to write the current state of ** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED], ** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE]) -** into an integer that the pArg argument points to. This capability -** is used during testing and is only available when the SQLITE_TEST -** compile-time option is used. +** into an integer that the pArg argument points to. +** This capability is only available if SQLite is compiled with [SQLITE_DEBUG]. ** **
  • [[SQLITE_FCNTL_SIZE_HINT]] ** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS @@ -821,10 +883,19 @@ struct sqlite3_io_methods { ** file space based on this hint in order to help writes to the database ** file run faster. ** +**
  • [[SQLITE_FCNTL_SIZE_LIMIT]] +** The [SQLITE_FCNTL_SIZE_LIMIT] opcode is used by in-memory VFS that +** implements [sqlite3_deserialize()] to set an upper bound on the size +** of the in-memory database. The argument is a pointer to a [sqlite3_int64]. +** If the integer pointed to is negative, then it is filled in with the +** current limit. Otherwise the limit is set to the larger of the value +** of the integer pointed to and the current database size. The integer +** pointed to is set to the new limit. +** **
  • [[SQLITE_FCNTL_CHUNK_SIZE]] ** The [SQLITE_FCNTL_CHUNK_SIZE] opcode is used to request that the VFS ** extends and truncates the database file in chunks of a size specified -** by the user. The fourth argument to [sqlite3_file_control()] should +** by the user. The fourth argument to [sqlite3_file_control()] should ** point to an integer (type int) containing the new chunk-size to use ** for the nominated database. Allocating database file space in large ** chunks (say 1MB at a time), may reduce file-system fragmentation and @@ -847,24 +918,24 @@ struct sqlite3_io_methods { **
  • [[SQLITE_FCNTL_SYNC]] ** The [SQLITE_FCNTL_SYNC] opcode is generated internally by SQLite and ** sent to the VFS immediately before the xSync method is invoked on a -** database file descriptor. Or, if the xSync method is not invoked -** because the user has configured SQLite with -** [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place +** database file descriptor. Or, if the xSync method is not invoked +** because the user has configured SQLite with +** [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place ** of the xSync method. In most cases, the pointer argument passed with ** this file-control is NULL. However, if the database file is being synced ** as part of a multi-database commit, the argument points to a nul-terminated -** string containing the transactions master-journal file name. VFSes that -** do not need this signal should silently ignore this opcode. Applications -** should not call [sqlite3_file_control()] with this opcode as doing so may -** disrupt the operation of the specialized VFSes that do require it. +** string containing the transactions super-journal file name. VFSes that +** do not need this signal should silently ignore this opcode. Applications +** should not call [sqlite3_file_control()] with this opcode as doing so may +** disrupt the operation of the specialized VFSes that do require it. ** **
  • [[SQLITE_FCNTL_COMMIT_PHASETWO]] ** The [SQLITE_FCNTL_COMMIT_PHASETWO] opcode is generated internally by SQLite ** and sent to the VFS after a transaction has been committed immediately ** but before the database is unlocked. VFSes that do not need this signal ** should silently ignore this opcode. Applications should not call -** [sqlite3_file_control()] with this opcode as doing so may disrupt the -** operation of the specialized VFSes that do require it. +** [sqlite3_file_control()] with this opcode as doing so may disrupt the +** operation of the specialized VFSes that do require it. ** **
  • [[SQLITE_FCNTL_WIN32_AV_RETRY]] ** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic @@ -886,7 +957,8 @@ struct sqlite3_io_methods { **
  • [[SQLITE_FCNTL_PERSIST_WAL]] ** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the ** persistent [WAL | Write Ahead Log] setting. By default, the auxiliary -** write ahead log and shared memory files used for transaction control +** write ahead log ([WAL file]) and shared memory +** files used for transaction control ** are automatically deleted when the latest connection to the database ** closes. Setting persistent WAL mode causes those files to persist after ** close. Persisting the files is useful when other processes that do not @@ -911,13 +983,13 @@ struct sqlite3_io_methods { **
  • [[SQLITE_FCNTL_OVERWRITE]] ** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening ** a write transaction to indicate that, unless it is rolled back for some -** reason, the entire database file will be overwritten by the current +** reason, the entire database file will be overwritten by the current ** transaction. This is used by VACUUM operations. ** **
  • [[SQLITE_FCNTL_VFSNAME]] ** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of ** all [VFSes] in the VFS stack. The names are of all VFS shims and the -** final bottom-level VFS are written into memory obtained from +** final bottom-level VFS are written into memory obtained from ** [sqlite3_malloc()] and the result is stored in the char* variable ** that the fourth parameter of [sqlite3_file_control()] points to. ** The caller is responsible for freeing the memory when done. As with @@ -936,7 +1008,7 @@ struct sqlite3_io_methods { ** upper-most shim only. ** **
  • [[SQLITE_FCNTL_PRAGMA]] -** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] +** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] ** file control is sent to the open [sqlite3_file] object corresponding ** to the database file to which the pragma statement refers. ^The argument ** to the [SQLITE_FCNTL_PRAGMA] file control is an array of @@ -947,7 +1019,7 @@ struct sqlite3_io_methods { ** of the char** argument point to a string obtained from [sqlite3_mprintf()] ** or the equivalent and that string will become the result of the pragma or ** the error message if the pragma fails. ^If the -** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal +** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal ** [PRAGMA] processing continues. ^If the [SQLITE_FCNTL_PRAGMA] ** file control returns [SQLITE_OK], then the parser assumes that the ** VFS has handled the PRAGMA itself and the parser generates a no-op @@ -964,16 +1036,16 @@ struct sqlite3_io_methods { ** ^The [SQLITE_FCNTL_BUSYHANDLER] ** file-control may be invoked by SQLite on the database file handle ** shortly after it is opened in order to provide a custom VFS with access -** to the connections busy-handler callback. The argument is of type (void **) +** to the connection's busy-handler callback. The argument is of type (void**) ** - an array of two (void *) values. The first (void *) actually points -** to a function of type (int (*)(void *)). In order to invoke the connections +** to a function of type (int (*)(void *)). In order to invoke the connection's ** busy-handler, this function should be invoked with the second (void *) in ** the array as the only argument. If it returns non-zero, then the operation ** should be retried. If it returns zero, the custom VFS should abandon the ** current operation. ** **
  • [[SQLITE_FCNTL_TEMPFILENAME]] -** ^Application can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control +** ^Applications can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control ** to have SQLite generate a ** temporary filename using the same algorithm that is followed to generate ** temporary filenames for TEMP tables and other internal uses. The @@ -987,7 +1059,7 @@ struct sqlite3_io_methods { ** The argument is a pointer to a value of type sqlite3_int64 that ** is an advisory maximum number of bytes in the file to memory map. The ** pointer is overwritten with the old value. The limit is not changed if -** the value originally pointed to is negative, and so the current limit +** the value originally pointed to is negative, and so the current limit ** can be queried by passing in a pointer to a negative number. This ** file-control is used internally to implement [PRAGMA mmap_size]. ** @@ -1031,7 +1103,7 @@ struct sqlite3_io_methods { **
  • [[SQLITE_FCNTL_RBU]] ** The [SQLITE_FCNTL_RBU] opcode is implemented by the special VFS used by ** the RBU extension only. All other VFS should return SQLITE_NOTFOUND for -** this opcode. +** this opcode. ** **
  • [[SQLITE_FCNTL_BEGIN_ATOMIC_WRITE]] ** If the [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] opcode returns SQLITE_OK, then @@ -1048,7 +1120,7 @@ struct sqlite3_io_methods { ** **
  • [[SQLITE_FCNTL_COMMIT_ATOMIC_WRITE]] ** The [SQLITE_FCNTL_COMMIT_ATOMIC_WRITE] opcode causes all write -** operations since the previous successful call to +** operations since the previous successful call to ** [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] to be performed atomically. ** This file control returns [SQLITE_OK] if and only if the writes were ** all performed successfully and have been committed to persistent storage. @@ -1060,7 +1132,7 @@ struct sqlite3_io_methods { ** **
  • [[SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE]] ** The [SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE] opcode causes all write -** operations since the previous successful call to +** operations since the previous successful call to ** [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] to be rolled back. ** ^This file control takes the file descriptor out of batch write mode ** so that all subsequent write operations are independent. @@ -1068,10 +1140,65 @@ struct sqlite3_io_methods { ** a prior successful call to [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE]. ** **
  • [[SQLITE_FCNTL_LOCK_TIMEOUT]] -** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode causes attempts to obtain -** a file lock using the xLock or xShmLock methods of the VFS to wait -** for up to M milliseconds before failing, where M is the single -** unsigned integer parameter. +** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode is used to configure a VFS +** to block for up to M milliseconds before failing when attempting to +** obtain a file lock using the xLock or xShmLock methods of the VFS. +** The parameter is a pointer to a 32-bit signed integer that contains +** the value that M is to be set to. Before returning, the 32-bit signed +** integer is overwritten with the previous value of M. +** +**
  • [[SQLITE_FCNTL_DATA_VERSION]] +** The [SQLITE_FCNTL_DATA_VERSION] opcode is used to detect changes to +** a database file. The argument is a pointer to a 32-bit unsigned integer. +** The "data version" for the pager is written into the pointer. The +** "data version" changes whenever any change occurs to the corresponding +** database file, either through SQL statements on the same database +** connection or through transactions committed by separate database +** connections possibly in other processes. The [sqlite3_total_changes()] +** interface can be used to find if any database on the connection has changed, +** but that interface responds to changes on TEMP as well as MAIN and does +** not provide a mechanism to detect changes to MAIN only. Also, the +** [sqlite3_total_changes()] interface responds to internal changes only and +** omits changes made by other database connections. The +** [PRAGMA data_version] command provides a mechanism to detect changes to +** a single attached database that occur due to other database connections, +** but omits changes implemented by the database connection on which it is +** called. This file control is the only mechanism to detect changes that +** happen either internally or externally and that are associated with +** a particular attached database. +** +**
  • [[SQLITE_FCNTL_CKPT_START]] +** The [SQLITE_FCNTL_CKPT_START] opcode is invoked from within a checkpoint +** in wal mode before the client starts to copy pages from the wal +** file to the database file. +** +**
  • [[SQLITE_FCNTL_CKPT_DONE]] +** The [SQLITE_FCNTL_CKPT_DONE] opcode is invoked from within a checkpoint +** in wal mode after the client has finished copying pages from the wal +** file to the database file, but before the *-shm file is updated to +** record the fact that the pages have been checkpointed. +** +**
  • [[SQLITE_FCNTL_EXTERNAL_READER]] +** The EXPERIMENTAL [SQLITE_FCNTL_EXTERNAL_READER] opcode is used to detect +** whether or not there is a database client in another process with a wal-mode +** transaction open on the database or not. It is only available on unix.The +** (void*) argument passed with this file-control should be a pointer to a +** value of type (int). The integer value is set to 1 if the database is a wal +** mode database and there exists at least one client in another process that +** currently has an SQL transaction open on the database. It is set to 0 if +** the database is not a wal-mode db, or if there is no such connection in any +** other process. This opcode cannot be used to detect transactions opened +** by clients within the current process, only within other processes. +** +**
  • [[SQLITE_FCNTL_CKSM_FILE]] +** The [SQLITE_FCNTL_CKSM_FILE] opcode is for use internally by the +** [checksum VFS shim] only. +** +**
  • [[SQLITE_FCNTL_RESET_CACHE]] +** If there is currently no transaction open on the database, and the +** database is not a temp db, then the [SQLITE_FCNTL_RESET_CACHE] file-control +** purges the contents of the in-memory page cache. If there is an open +** transaction, or if the db is a temp-db, this opcode is a no-op, not an error. ** */ #define SQLITE_FCNTL_LOCKSTATE 1 @@ -1107,6 +1234,14 @@ struct sqlite3_io_methods { #define SQLITE_FCNTL_COMMIT_ATOMIC_WRITE 32 #define SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE 33 #define SQLITE_FCNTL_LOCK_TIMEOUT 34 +#define SQLITE_FCNTL_DATA_VERSION 35 +#define SQLITE_FCNTL_SIZE_LIMIT 36 +#define SQLITE_FCNTL_CKPT_DONE 37 +#define SQLITE_FCNTL_RESERVE_BYTES 38 +#define SQLITE_FCNTL_CKPT_START 39 +#define SQLITE_FCNTL_EXTERNAL_READER 40 +#define SQLITE_FCNTL_CKSM_FILE 41 +#define SQLITE_FCNTL_RESET_CACHE 42 /* deprecated names */ #define SQLITE_GET_LOCKPROXYFILE SQLITE_FCNTL_GET_LOCKPROXYFILE @@ -1136,6 +1271,26 @@ typedef struct sqlite3_mutex sqlite3_mutex; */ typedef struct sqlite3_api_routines sqlite3_api_routines; +/* +** CAPI3REF: File Name +** +** Type [sqlite3_filename] is used by SQLite to pass filenames to the +** xOpen method of a [VFS]. It may be cast to (const char*) and treated +** as a normal, nul-terminated, UTF-8 buffer containing the filename, but +** may also be passed to special APIs such as: +** +** +*/ +typedef const char *sqlite3_filename; + /* ** CAPI3REF: OS Interface Object ** @@ -1152,10 +1307,10 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** to 3 with SQLite [version 3.7.6] on [dateof:3.7.6]. Additional fields ** may be appended to the sqlite3_vfs object and the iVersion value ** may increase again in future versions of SQLite. -** Note that the structure -** of the sqlite3_vfs object changes in the transition from +** Note that due to an oversight, the structure +** of the sqlite3_vfs object changed in the transition from ** SQLite [version 3.5.9] to [version 3.6.0] on [dateof:3.6.0] -** and yet the iVersion field was not modified. +** and yet the iVersion field was not increased. ** ** The szOsFile field is the size of the subclassed [sqlite3_file] ** structure used by this VFS. mxPathname is the maximum length of @@ -1190,14 +1345,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** the [sqlite3_file] can safely store a pointer to the ** filename if it needs to remember the filename for some reason. ** If the zFilename parameter to xOpen is a NULL pointer then xOpen -** must invent its own temporary name for the file. ^Whenever the +** must invent its own temporary name for the file. ^Whenever the ** xFilename parameter is NULL it will also be the case that the ** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE]. ** ** The flags argument to xOpen() includes all bits set in ** the flags argument to [sqlite3_open_v2()]. Or if [sqlite3_open()] ** or [sqlite3_open16()] is used, then flags includes at least -** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. +** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. ** If xOpen() opens a file read-only then it sets *pOutFlags to ** include [SQLITE_OPEN_READONLY]. Other bits in *pOutFlags may be set. ** @@ -1211,7 +1366,7 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; **
  • [SQLITE_OPEN_TEMP_JOURNAL] **
  • [SQLITE_OPEN_TRANSIENT_DB] **
  • [SQLITE_OPEN_SUBJOURNAL] -**
  • [SQLITE_OPEN_MASTER_JOURNAL] +**
  • [SQLITE_OPEN_SUPER_JOURNAL] **
  • [SQLITE_OPEN_WAL] ** )^ ** @@ -1239,14 +1394,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** ^The [SQLITE_OPEN_EXCLUSIVE] flag is always used in conjunction ** with the [SQLITE_OPEN_CREATE] flag, which are both directly ** analogous to the O_EXCL and O_CREAT flags of the POSIX open() -** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the +** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the ** SQLITE_OPEN_CREATE, is used to indicate that file should always ** be created, and that it is an error if it already exists. -** It is not used to indicate the file should be opened +** It is not used to indicate the file should be opened ** for exclusive access. ** ** ^At least szOsFile bytes of memory are allocated by SQLite -** to hold the [sqlite3_file] structure passed as the third +** to hold the [sqlite3_file] structure passed as the third ** argument to xOpen. The xOpen method does not have to ** allocate the structure; it should just fill it in. Note that ** the xOpen method must set the sqlite3_file.pMethods to either @@ -1259,8 +1414,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS] ** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to ** test whether a file is readable and writable, or [SQLITE_ACCESS_READ] -** to test whether a file is at least readable. The file can be a -** directory. +** to test whether a file is at least readable. The SQLITE_ACCESS_READ +** flag is never actually used and is not implemented in the built-in +** VFSes of SQLite. The file is named by the second argument and can be a +** directory. The xAccess method returns [SQLITE_OK] on success or some +** non-zero error code if there is an I/O error or if the name of +** the file given in the second argument is illegal. If SQLITE_OK +** is returned, then non-zero or zero is written into *pResOut to indicate +** whether or not the file is accessible. ** ** ^SQLite will always allocate at least mxPathname+1 bytes for the ** output buffer xFullPathname. The exact size of the output buffer @@ -1280,16 +1441,16 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** method returns a Julian Day Number for the current date and time as ** a floating point value. ** ^The xCurrentTimeInt64() method returns, as an integer, the Julian -** Day Number multiplied by 86400000 (the number of milliseconds in -** a 24-hour day). +** Day Number multiplied by 86400000 (the number of milliseconds in +** a 24-hour day). ** ^SQLite will use the xCurrentTimeInt64() method to get the current -** date and time if that method is available (if iVersion is 2 or +** date and time if that method is available (if iVersion is 2 or ** greater and the function pointer is not NULL) and will fall back ** to xCurrentTime() if xCurrentTimeInt64() is unavailable. ** ** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces ** are not used by the SQLite core. These optional interfaces are provided -** by some VFSes to facilitate testing of the VFS code. By overriding +** by some VFSes to facilitate testing of the VFS code. By overriding ** system calls with functions under its control, a test program can ** simulate faults and error conditions that would otherwise be difficult ** or impossible to induce. The set of system calls that can be overridden @@ -1308,7 +1469,7 @@ struct sqlite3_vfs { sqlite3_vfs *pNext; /* Next registered VFS */ const char *zName; /* Name of this virtual file system */ void *pAppData; /* Pointer to application-specific data */ - int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*, + int (*xOpen)(sqlite3_vfs*, sqlite3_filename zName, sqlite3_file*, int flags, int *pOutFlags); int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir); int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut); @@ -1336,7 +1497,7 @@ struct sqlite3_vfs { /* ** The methods above are in versions 1 through 3 of the sqlite_vfs object. ** New fields may be appended in future versions. The iVersion - ** value will increment whenever this happens. + ** value will increment whenever this happens. */ }; @@ -1380,7 +1541,7 @@ struct sqlite3_vfs { ** ** ** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as -** was given on the corresponding lock. +** was given on the corresponding lock. ** ** The xShmLock method can transition between unlocked and SHARED or ** between unlocked and EXCLUSIVE. It cannot transition between SHARED @@ -1495,20 +1656,23 @@ SQLITE_API int sqlite3_os_end(void); ** must ensure that no other SQLite interfaces are invoked by other ** threads while sqlite3_config() is running. ** -** The sqlite3_config() interface -** may only be invoked prior to library initialization using -** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. -** ^If sqlite3_config() is called after [sqlite3_initialize()] and before -** [sqlite3_shutdown()] then it will return SQLITE_MISUSE. -** Note, however, that ^sqlite3_config() can be called as part of the -** implementation of an application-defined [sqlite3_os_init()]. -** ** The first argument to sqlite3_config() is an integer ** [configuration option] that determines ** what property of SQLite is to be configured. Subsequent arguments ** vary depending on the [configuration option] ** in the first argument. ** +** For most configuration options, the sqlite3_config() interface +** may only be invoked prior to library initialization using +** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. +** The exceptional configuration options that may be invoked at any time +** are called "anytime configuration options". +** ^If sqlite3_config() is called after [sqlite3_initialize()] and before +** [sqlite3_shutdown()] with a first argument that is not an anytime +** configuration option, then the sqlite3_config() call will return SQLITE_MISUSE. +** Note, however, that ^sqlite3_config() can be called as part of the +** implementation of an application-defined [sqlite3_os_init()]. +** ** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK]. ** ^If the option is unknown or SQLite is unable to set the option ** then this routine returns a non-zero [error code]. @@ -1525,7 +1689,7 @@ SQLITE_API int sqlite3_config(int, ...); ** [database connection] (specified in the first argument). ** ** The second argument to sqlite3_db_config(D,V,...) is the -** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code +** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code ** that indicates what aspect of the [database connection] is being configured. ** Subsequent arguments vary depending on the configuration verb. ** @@ -1543,7 +1707,7 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...); ** This object is used in only one place in the SQLite interface. ** A pointer to an instance of this object is the argument to ** [sqlite3_config()] when the configuration option is -** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. +** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. ** By creating an instance of this object ** and passing it to [sqlite3_config]([SQLITE_CONFIG_MALLOC]) ** during configuration, an application can specify an alternative @@ -1573,17 +1737,17 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...); ** allocators round up memory allocations at least to the next multiple ** of 8. Some allocators round up to a larger multiple or to a power of 2. ** Every memory allocation request coming in through [sqlite3_malloc()] -** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, +** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, ** that causes the corresponding memory allocation to fail. ** ** The xInit method initializes the memory allocator. For example, -** it might allocate any require mutexes or initialize internal data +** it might allocate any required mutexes or initialize internal data ** structures. The xShutdown method is invoked (indirectly) by ** [sqlite3_shutdown()] and should deallocate any resources acquired ** by xInit. The pAppData pointer is used as the only parameter to ** xInit and xShutdown. ** -** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes +** SQLite holds the [SQLITE_MUTEX_STATIC_MAIN] mutex when it invokes ** the xInit method, so the xInit method need not be threadsafe. The ** xShutdown method is only called from [sqlite3_shutdown()] so it does ** not need to be threadsafe either. For all other methods, SQLite @@ -1616,6 +1780,23 @@ struct sqlite3_mem_methods { ** These constants are the available integer configuration options that ** can be passed as the first argument to the [sqlite3_config()] interface. ** +** Most of the configuration options for sqlite3_config() +** will only work if invoked prior to [sqlite3_initialize()] or after +** [sqlite3_shutdown()]. The few exceptions to this rule are called +** "anytime configuration options". +** ^Calling [sqlite3_config()] with a first argument that is not an +** anytime configuration option in between calls to [sqlite3_initialize()] and +** [sqlite3_shutdown()] is a no-op that returns SQLITE_MISUSE. +** +** The set of anytime configuration options can change (by insertions +** and/or deletions) from one release of SQLite to the next. +** As of SQLite version 3.42.0, the complete set of anytime configuration +** options is: +** +** ** New configuration options may be added in future releases of SQLite. ** Existing configuration options might be discontinued. Applications ** should check the return code from [sqlite3_config()] to make sure that @@ -1631,7 +1812,7 @@ struct sqlite3_mem_methods { ** by a single thread. ^If SQLite is compiled with ** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then ** it is not possible to change the [threading mode] from its default -** value of Single-thread and so [sqlite3_config()] will return +** value of Single-thread and so [sqlite3_config()] will return ** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD ** configuration option. ** @@ -1666,7 +1847,7 @@ struct sqlite3_mem_methods { ** SQLITE_CONFIG_SERIALIZED configuration option. ** ** [[SQLITE_CONFIG_MALLOC]]
    SQLITE_CONFIG_MALLOC
    -**
    ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is +**
    ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is ** a pointer to an instance of the [sqlite3_mem_methods] structure. ** The argument specifies ** alternative low-level memory allocation routines to be used in place of @@ -1699,6 +1880,7 @@ struct sqlite3_mem_methods { ** memory allocation statistics. ^(When memory allocation statistics are ** disabled, the following SQLite interfaces become non-operational: ** ** ** ^Specifying an unknown parameter in the query component of a URI is not an @@ -3241,36 +3689,37 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*); ** ** **
    URI filenames Results -**
    file:data.db +**
    file:data.db ** Open the file "data.db" in the current directory. **
    file:/home/fred/data.db
    -** file:///home/fred/data.db
    -** file://localhost/home/fred/data.db
    		+** file:///home/fred/data.db
    +** file://localhost/home/fred/data.db
    		** Open the database file "/home/fred/data.db". -**
    file://darkstar/home/fred/data.db +**
    file://darkstar/home/fred/data.db ** An error. "darkstar" is not a recognized authority. -**
    +**
    ** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db ** Windows only: Open the file "data.db" on fred's desktop on drive -** C:. Note that the %20 escaping in this example is not strictly +** C:. Note that the %20 escaping in this example is not strictly ** necessary - space characters can be used literally ** in URI filenames. -**
    file:data.db?mode=ro&cache=private +**
    file:data.db?mode=ro&cache=private ** Open file "data.db" in the current directory for read-only access. ** Regardless of whether or not shared-cache mode is enabled by ** default, use a private cache. **
    file:/home/fred/data.db?vfs=unix-dotfile ** Open file "/home/fred/data.db". Use the special VFS "unix-dotfile" ** that uses dot-files in place of posix advisory locking. -**
    file:data.db?mode=readonly +**
    file:data.db?mode=readonly ** An error. "readonly" is not a valid option for the "mode" parameter. +** Use "ro" instead: "file:data.db?mode=ro". **
    ** ** ^URI hexadecimal escape sequences (%HH) are supported within the path and ** query components of a URI. A hexadecimal escape sequence consists of a -** percent sign - "%" - followed by exactly two hexadecimal digits +** percent sign - "%" - followed by exactly two hexadecimal digits ** specifying an octet value. ^Before the path or query components of a -** URI filename are interpreted, they are encoded using UTF-8 and all +** URI filename are interpreted, they are encoded using UTF-8 and all ** hexadecimal escape sequences replaced by a single byte containing the ** corresponding octet. If this process generates an invalid UTF-8 encoding, ** the results are undefined. @@ -3305,17 +3754,27 @@ SQLITE_API int sqlite3_open_v2( /* ** CAPI3REF: Obtain Values For URI Parameters ** -** These are utility routines, useful to VFS implementations, that check -** to see if a database file was a URI that contained a specific query +** These are utility routines, useful to [VFS|custom VFS implementations], +** that check if a database file was a URI that contained a specific query ** parameter, and if so obtains the value of that query parameter. ** -** If F is the database filename pointer passed into the xOpen() method of -** a VFS implementation when the flags parameter to xOpen() has one or -** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and -** P is the name of the query parameter, then +** The first parameter to these interfaces (hereafter referred to +** as F) must be one of: +** +** If the F parameter is not one of the above, then the behavior is +** undefined and probably undesirable. Older versions of SQLite were +** more tolerant of invalid F parameters than newer versions. +** +** If F is a suitable filename (as described in the previous paragraph) +** and if P is the name of the query parameter, then ** sqlite3_uri_parameter(F,P) returns the value of the P -** parameter if it exists or a NULL pointer if P does not appear as a -** query parameter on F. If P is a query parameter of F +** parameter if it exists or a NULL pointer if P does not appear as a +** query parameter on F. If P is a query parameter of F and it ** has no explicit value, then sqlite3_uri_parameter(F,P) returns ** a pointer to an empty string. ** @@ -3323,44 +3782,177 @@ SQLITE_API int sqlite3_open_v2( ** parameter and returns true (1) or false (0) according to the value ** of P. The sqlite3_uri_boolean(F,P,B) routine returns true (1) if the ** value of query parameter P is one of "yes", "true", or "on" in any -** case or if the value begins with a non-zero number. The +** case or if the value begins with a non-zero number. The ** sqlite3_uri_boolean(F,P,B) routines returns false (0) if the value of ** query parameter P is one of "no", "false", or "off" in any case or ** if the value begins with a numeric zero. If P is not a query -** parameter on F or if the value of P is does not match any of the +** parameter on F or if the value of P does not match any of the ** above, then sqlite3_uri_boolean(F,P,B) returns (B!=0). ** ** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a ** 64-bit signed integer and returns that integer, or D if P does not ** exist. If the value of P is something other than an integer, then ** zero is returned. -** +** +** The sqlite3_uri_key(F,N) returns a pointer to the name (not +** the value) of the N-th query parameter for filename F, or a NULL +** pointer if N is less than zero or greater than the number of query +** parameters minus 1. The N value is zero-based so N should be 0 to obtain +** the name of the first query parameter, 1 for the second parameter, and +** so forth. +** ** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and ** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and -** is not a database file pathname pointer that SQLite passed into the xOpen -** VFS method, then the behavior of this routine is undefined and probably -** undesirable. +** is not a database file pathname pointer that the SQLite core passed +** into the xOpen VFS method, then the behavior of this routine is undefined +** and probably undesirable. +** +** Beginning with SQLite [version 3.31.0] ([dateof:3.31.0]) the input F +** parameter can also be the name of a rollback journal file or WAL file +** in addition to the main database file. Prior to version 3.31.0, these +** routines would only work if F was the name of the main database file. +** When the F parameter is the name of the rollback journal or WAL file, +** it has access to all the same query parameters as were found on the +** main database file. +** +** See the [URI filename] documentation for additional information. */ -SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam); -SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault); -SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64); +SQLITE_API const char *sqlite3_uri_parameter(sqlite3_filename z, const char *zParam); +SQLITE_API int sqlite3_uri_boolean(sqlite3_filename z, const char *zParam, int bDefault); +SQLITE_API sqlite3_int64 sqlite3_uri_int64(sqlite3_filename, const char*, sqlite3_int64); +SQLITE_API const char *sqlite3_uri_key(sqlite3_filename z, int N); +/* +** CAPI3REF: Translate filenames +** +** These routines are available to [VFS|custom VFS implementations] for +** translating filenames between the main database file, the journal file, +** and the WAL file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** passed by the SQLite core into the VFS, then sqlite3_filename_database(F) +** returns the name of the corresponding database file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** passed by the SQLite core into the VFS, or if F is a database filename +** obtained from [sqlite3_db_filename()], then sqlite3_filename_journal(F) +** returns the name of the corresponding rollback journal file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** that was passed by the SQLite core into the VFS, or if F is a database +** filename obtained from [sqlite3_db_filename()], then +** sqlite3_filename_wal(F) returns the name of the corresponding +** WAL file. +** +** In all of the above, if F is not the name of a database, journal or WAL +** filename passed into the VFS from the SQLite core and F is not the +** return value from [sqlite3_db_filename()], then the result is +** undefined and is likely a memory access violation. +*/ +SQLITE_API const char *sqlite3_filename_database(sqlite3_filename); +SQLITE_API const char *sqlite3_filename_journal(sqlite3_filename); +SQLITE_API const char *sqlite3_filename_wal(sqlite3_filename); + +/* +** CAPI3REF: Database File Corresponding To A Journal +** +** ^If X is the name of a rollback or WAL-mode journal file that is +** passed into the xOpen method of [sqlite3_vfs], then +** sqlite3_database_file_object(X) returns a pointer to the [sqlite3_file] +** object that represents the main database file. +** +** This routine is intended for use in custom [VFS] implementations +** only. It is not a general-purpose interface. +** The argument sqlite3_file_object(X) must be a filename pointer that +** has been passed into [sqlite3_vfs].xOpen method where the +** flags parameter to xOpen contains one of the bits +** [SQLITE_OPEN_MAIN_JOURNAL] or [SQLITE_OPEN_WAL]. Any other use +** of this routine results in undefined and probably undesirable +** behavior. +*/ +SQLITE_API sqlite3_file *sqlite3_database_file_object(const char*); + +/* +** CAPI3REF: Create and Destroy VFS Filenames +** +** These interfaces are provided for use by [VFS shim] implementations and +** are not useful outside of that context. +** +** The sqlite3_create_filename(D,J,W,N,P) allocates memory to hold a version of +** database filename D with corresponding journal file J and WAL file W and +** with N URI parameters key/values pairs in the array P. The result from +** sqlite3_create_filename(D,J,W,N,P) is a pointer to a database filename that +** is safe to pass to routines like: +** +** If a memory allocation error occurs, sqlite3_create_filename() might +** return a NULL pointer. The memory obtained from sqlite3_create_filename(X) +** must be released by a corresponding call to sqlite3_free_filename(Y). +** +** The P parameter in sqlite3_create_filename(D,J,W,N,P) should be an array +** of 2*N pointers to strings. Each pair of pointers in this array corresponds +** to a key and value for a query parameter. The P parameter may be a NULL +** pointer if N is zero. None of the 2*N pointers in the P array may be +** NULL pointers and key pointers should not be empty strings. +** None of the D, J, or W parameters to sqlite3_create_filename(D,J,W,N,P) may +** be NULL pointers, though they can be empty strings. +** +** The sqlite3_free_filename(Y) routine releases a memory allocation +** previously obtained from sqlite3_create_filename(). Invoking +** sqlite3_free_filename(Y) where Y is a NULL pointer is a harmless no-op. +** +** If the Y parameter to sqlite3_free_filename(Y) is anything other +** than a NULL pointer or a pointer previously acquired from +** sqlite3_create_filename(), then bad things such as heap +** corruption or segfaults may occur. The value Y should not be +** used again after sqlite3_free_filename(Y) has been called. This means +** that if the [sqlite3_vfs.xOpen()] method of a VFS has been called using Y, +** then the corresponding [sqlite3_module.xClose() method should also be +** invoked prior to calling sqlite3_free_filename(Y). +*/ +SQLITE_API sqlite3_filename sqlite3_create_filename( + const char *zDatabase, + const char *zJournal, + const char *zWal, + int nParam, + const char **azParam +); +SQLITE_API void sqlite3_free_filename(sqlite3_filename); /* ** CAPI3REF: Error Codes And Messages ** METHOD: sqlite3 ** -** ^If the most recent sqlite3_* API call associated with +** ^If the most recent sqlite3_* API call associated with ** [database connection] D failed, then the sqlite3_errcode(D) interface ** returns the numeric [result code] or [extended result code] for that ** API call. -** If the most recent API call was successful, -** then the return value from sqlite3_errcode() is undefined. ** ^The sqlite3_extended_errcode() -** interface is the same except that it always returns the +** interface is the same except that it always returns the ** [extended result code] even when extended result codes are ** disabled. ** +** The values returned by sqlite3_errcode() and/or +** sqlite3_extended_errcode() might change with each API call. +** Except, there are some interfaces that are guaranteed to never +** change the value of the error code. The error-code preserving +** interfaces include the following: +** +** +** ** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language ** text that describes the error, as either UTF-8 or UTF-16 respectively. ** ^(Memory to hold the error message string is managed internally. @@ -3373,6 +3965,13 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int ** ^(Memory to hold the error message string is managed internally ** and must not be freed by the application)^. ** +** ^If the most recent error references a specific token in the input +** SQL, the sqlite3_error_offset() interface returns the byte offset +** of the start of that token. ^The byte offset returned by +** sqlite3_error_offset() assumes that the input SQL is UTF8. +** ^If the most recent error does not reference a specific token in the input +** SQL, then the sqlite3_error_offset() function returns -1. +** ** When the serialized [threading mode] is in use, it might be the ** case that a second error occurs on a separate thread in between ** the time of the first error and the call to these interfaces. @@ -3392,6 +3991,7 @@ SQLITE_API int sqlite3_extended_errcode(sqlite3 *db); SQLITE_API const char *sqlite3_errmsg(sqlite3*); SQLITE_API const void *sqlite3_errmsg16(sqlite3*); SQLITE_API const char *sqlite3_errstr(int); +SQLITE_API int sqlite3_error_offset(sqlite3 *db); /* ** CAPI3REF: Prepared Statement Object @@ -3401,7 +4001,7 @@ SQLITE_API const char *sqlite3_errstr(int); ** has been compiled into binary form and is ready to be evaluated. ** ** Think of each SQL statement as a separate computer program. The -** original SQL text is source code. A prepared statement object +** original SQL text is source code. A prepared statement object ** is the compiled object code. All SQL must be converted into a ** prepared statement before it can be run. ** @@ -3431,7 +4031,7 @@ typedef struct sqlite3_stmt sqlite3_stmt; ** new limit for that construct.)^ ** ** ^If the new limit is a negative number, the limit is unchanged. -** ^(For each limit category SQLITE_LIMIT_NAME there is a +** ^(For each limit category SQLITE_LIMIT_NAME there is a ** [limits | hard upper bound] ** set at compile-time by a C preprocessor macro called ** [limits | SQLITE_MAX_NAME]. @@ -3439,7 +4039,7 @@ typedef struct sqlite3_stmt sqlite3_stmt; ** ^Attempts to increase a limit above its hard upper bound are ** silently truncated to the hard upper bound. ** -** ^Regardless of whether or not the limit was changed, the +** ^Regardless of whether or not the limit was changed, the ** [sqlite3_limit()] interface returns the prior value of the limit. ** ^Hence, to find the current value of a limit without changing it, ** simply invoke this interface with the third parameter set to -1. @@ -3544,15 +4144,30 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); **
    The SQLITE_PREPARE_PERSISTENT flag is a hint to the query planner ** that the prepared statement will be retained for a long time and ** probably reused many times.)^ ^Without this flag, [sqlite3_prepare_v3()] -** and [sqlite3_prepare16_v3()] assume that the prepared statement will +** and [sqlite3_prepare16_v3()] assume that the prepared statement will ** be used just once or at most a few times and then destroyed using ** [sqlite3_finalize()] relatively soon. The current implementation acts ** on this hint by avoiding the use of [lookaside memory] so as not to ** deplete the limited store of lookaside memory. Future versions of ** SQLite may act on this hint differently. +** +** [[SQLITE_PREPARE_NORMALIZE]]
    SQLITE_PREPARE_NORMALIZE
    +**
    The SQLITE_PREPARE_NORMALIZE flag is a no-op. This flag used +** to be required for any prepared statement that wanted to use the +** [sqlite3_normalized_sql()] interface. However, the +** [sqlite3_normalized_sql()] interface is now available to all +** prepared statements, regardless of whether or not they use this +** flag. +** +** [[SQLITE_PREPARE_NO_VTAB]]
    SQLITE_PREPARE_NO_VTAB
    +**
    The SQLITE_PREPARE_NO_VTAB flag causes the SQL compiler +** to return an error (error code SQLITE_ERROR) if the statement uses +** any virtual tables. ** */ #define SQLITE_PREPARE_PERSISTENT 0x01 +#define SQLITE_PREPARE_NORMALIZE 0x02 +#define SQLITE_PREPARE_NO_VTAB 0x04 /* ** CAPI3REF: Compiling An SQL Statement @@ -3636,15 +4251,15 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); **
    • ** **
  • -** ^If the specific value bound to [parameter | host parameter] in the +** ^If the specific value bound to a [parameter | host parameter] in the ** WHERE clause might influence the choice of query plan for a statement, -** then the statement will be automatically recompiled, as if there had been -** a schema change, on the first [sqlite3_step()] call following any change -** to the [sqlite3_bind_text | bindings] of that [parameter]. -** ^The specific value of WHERE-clause [parameter] might influence the +** then the statement will be automatically recompiled, as if there had been +** a schema change, on the first [sqlite3_step()] call following any change +** to the [sqlite3_bind_text | bindings] of that [parameter]. +** ^The specific value of a WHERE-clause [parameter] might influence the ** choice of query plan if the parameter is the left-hand side of a [LIKE] ** or [GLOB] operator or if the parameter is compared to an indexed column -** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled. +** and the [SQLITE_ENABLE_STAT4] compile-time option is enabled. **
    • ** ** @@ -3710,6 +4325,11 @@ SQLITE_API int sqlite3_prepare16_v3( ** ^The sqlite3_expanded_sql(P) interface returns a pointer to a UTF-8 ** string containing the SQL text of prepared statement P with ** [bound parameters] expanded. +** ^The sqlite3_normalized_sql(P) interface returns a pointer to a UTF-8 +** string containing the normalized SQL text of prepared statement P. The +** semantics used to normalize a SQL statement are unspecified and subject +** to change. At a minimum, literal values will be replaced with suitable +** placeholders. ** ** ^(For example, if a prepared statement is created using the SQL ** text "SELECT $abc,:xyz" and if parameter $abc is bound to integer 2345 @@ -3725,14 +4345,21 @@ SQLITE_API int sqlite3_prepare16_v3( ** bound parameter expansions. ^The [SQLITE_OMIT_TRACE] compile-time ** option causes sqlite3_expanded_sql() to always return NULL. ** -** ^The string returned by sqlite3_sql(P) is managed by SQLite and is -** automatically freed when the prepared statement is finalized. +** ^The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P) +** are managed by SQLite and are automatically freed when the prepared +** statement is finalized. ** ^The string returned by sqlite3_expanded_sql(P), on the other hand, -** is obtained from [sqlite3_malloc()] and must be free by the application +** is obtained from [sqlite3_malloc()] and must be freed by the application ** by passing it to [sqlite3_free()]. +** +** ^The sqlite3_normalized_sql() interface is only available if +** the [SQLITE_ENABLE_NORMALIZE] compile-time option is defined. */ SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); +#ifdef SQLITE_ENABLE_NORMALIZE +SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt); +#endif /* ** CAPI3REF: Determine If An SQL Statement Writes The Database @@ -3743,8 +4370,8 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); ** the content of the database file. ** ** Note that [application-defined SQL functions] or -** [virtual tables] might change the database indirectly as a side effect. -** ^(For example, if an application defines a function "eval()" that +** [virtual tables] might change the database indirectly as a side effect. +** ^(For example, if an application defines a function "eval()" that ** calls [sqlite3_exec()], then the following SQL statement would ** change the database file through side-effects: ** @@ -3758,35 +4385,95 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); ** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK], ** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true, ** since the statements themselves do not actually modify the database but -** rather they control the timing of when other statements modify the +** rather they control the timing of when other statements modify the ** database. ^The [ATTACH] and [DETACH] statements also cause ** sqlite3_stmt_readonly() to return true since, while those statements -** change the configuration of a database connection, they do not make +** change the configuration of a database connection, they do not make ** changes to the content of the database files on disk. ** ^The sqlite3_stmt_readonly() interface returns true for [BEGIN] since ** [BEGIN] merely sets internal flags, but the [BEGIN|BEGIN IMMEDIATE] and ** [BEGIN|BEGIN EXCLUSIVE] commands do touch the database and so ** sqlite3_stmt_readonly() returns false for those commands. +** +** ^This routine returns false if there is any possibility that the +** statement might change the database file. ^A false return does +** not guarantee that the statement will change the database file. +** ^For example, an UPDATE statement might have a WHERE clause that +** makes it a no-op, but the sqlite3_stmt_readonly() result would still +** be false. ^Similarly, a CREATE TABLE IF NOT EXISTS statement is a +** read-only no-op if the table already exists, but +** sqlite3_stmt_readonly() still returns false for such a statement. +** +** ^If prepared statement X is an [EXPLAIN] or [EXPLAIN QUERY PLAN] +** statement, then sqlite3_stmt_readonly(X) returns the same value as +** if the EXPLAIN or EXPLAIN QUERY PLAN prefix were omitted. */ SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt); +/* +** CAPI3REF: Query The EXPLAIN Setting For A Prepared Statement +** METHOD: sqlite3_stmt +** +** ^The sqlite3_stmt_isexplain(S) interface returns 1 if the +** prepared statement S is an EXPLAIN statement, or 2 if the +** statement S is an EXPLAIN QUERY PLAN. +** ^The sqlite3_stmt_isexplain(S) interface returns 0 if S is +** an ordinary statement or a NULL pointer. +*/ +SQLITE_API int sqlite3_stmt_isexplain(sqlite3_stmt *pStmt); + +/* +** CAPI3REF: Change The EXPLAIN Setting For A Prepared Statement +** METHOD: sqlite3_stmt +** +** The sqlite3_stmt_explain(S,E) interface changes the EXPLAIN +** setting for [prepared statement] S. If E is zero, then S becomes +** a normal prepared statement. If E is 1, then S behaves as if +** its SQL text began with "[EXPLAIN]". If E is 2, then S behaves as if +** its SQL text began with "[EXPLAIN QUERY PLAN]". +** +** Calling sqlite3_stmt_explain(S,E) might cause S to be reprepared. +** SQLite tries to avoid a reprepare, but a reprepare might be necessary +** on the first transition into EXPLAIN or EXPLAIN QUERY PLAN mode. +** +** Because of the potential need to reprepare, a call to +** sqlite3_stmt_explain(S,E) will fail with SQLITE_ERROR if S cannot be +** reprepared because it was created using [sqlite3_prepare()] instead of +** the newer [sqlite3_prepare_v2()] or [sqlite3_prepare_v3()] interfaces and +** hence has no saved SQL text with which to reprepare. +** +** Changing the explain setting for a prepared statement does not change +** the original SQL text for the statement. Hence, if the SQL text originally +** began with EXPLAIN or EXPLAIN QUERY PLAN, but sqlite3_stmt_explain(S,0) +** is called to convert the statement into an ordinary statement, the EXPLAIN +** or EXPLAIN QUERY PLAN keywords will still appear in the sqlite3_sql(S) +** output, even though the statement now acts like a normal SQL statement. +** +** This routine returns SQLITE_OK if the explain mode is successfully +** changed, or an error code if the explain mode could not be changed. +** The explain mode cannot be changed while a statement is active. +** Hence, it is good practice to call [sqlite3_reset(S)] +** immediately prior to calling sqlite3_stmt_explain(S,E). +*/ +SQLITE_API int sqlite3_stmt_explain(sqlite3_stmt *pStmt, int eMode); + /* ** CAPI3REF: Determine If A Prepared Statement Has Been Reset ** METHOD: sqlite3_stmt ** ** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the -** [prepared statement] S has been stepped at least once using +** [prepared statement] S has been stepped at least once using ** [sqlite3_step(S)] but has neither run to completion (returned ** [SQLITE_DONE] from [sqlite3_step(S)]) nor ** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) -** interface returns false if S is a NULL pointer. If S is not a +** interface returns false if S is a NULL pointer. If S is not a ** NULL pointer and is not a pointer to a valid [prepared statement] ** object, then the behavior is undefined and probably undesirable. ** ** This interface can be used in combination [sqlite3_next_stmt()] -** to locate all prepared statements associated with a database +** to locate all prepared statements associated with a database ** connection that are in need of being reset. This can be used, -** for example, in diagnostic routines to search for prepared +** for example, in diagnostic routines to search for prepared ** statements that are holding a transaction open. */ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); @@ -3805,7 +4492,7 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** will accept either a protected or an unprotected sqlite3_value. ** Every interface that accepts sqlite3_value arguments specifies ** whether or not it requires a protected sqlite3_value. The -** [sqlite3_value_dup()] interface can be used to construct a new +** [sqlite3_value_dup()] interface can be used to construct a new ** protected sqlite3_value from an unprotected sqlite3_value. ** ** The terms "protected" and "unprotected" refer to whether or not @@ -3813,7 +4500,7 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** sqlite3_value object but no mutex is held for an unprotected ** sqlite3_value object. If SQLite is compiled to be single-threaded ** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0) -** or if SQLite is run in one of reduced mutex modes +** or if SQLite is run in one of reduced mutex modes ** [SQLITE_CONFIG_SINGLETHREAD] or [SQLITE_CONFIG_MULTITHREAD] ** then there is no distinction between protected and unprotected ** sqlite3_value objects and they can be used interchangeably. However, @@ -3823,6 +4510,8 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** ** ^The sqlite3_value objects that are passed as parameters into the ** implementation of [application-defined SQL functions] are protected. +** ^The sqlite3_value objects returned by [sqlite3_vtab_rhs_value()] +** are protected. ** ^The sqlite3_value object returned by ** [sqlite3_column_value()] is unprotected. ** Unprotected sqlite3_value objects may only be used as arguments @@ -3882,12 +4571,30 @@ typedef struct sqlite3_context sqlite3_context; ** [sqlite3_bind_parameter_index()] API if desired. ^The index ** for "?NNN" parameters is the value of NNN. ** ^The NNN value must be between 1 and the [sqlite3_limit()] -** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999). +** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 32766). ** ** ^The third argument is the value to bind to the parameter. ** ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16() ** or sqlite3_bind_blob() is a NULL pointer then the fourth parameter ** is ignored and the end result is the same as sqlite3_bind_null(). +** ^If the third parameter to sqlite3_bind_text() is not NULL, then +** it should be a pointer to well-formed UTF8 text. +** ^If the third parameter to sqlite3_bind_text16() is not NULL, then +** it should be a pointer to well-formed UTF16 text. +** ^If the third parameter to sqlite3_bind_text64() is not NULL, then +** it should be a pointer to a well-formed unicode string that is +** either UTF8 if the sixth parameter is SQLITE_UTF8, or UTF16 +** otherwise. +** +** [[byte-order determination rules]] ^The byte-order of +** UTF16 input text is determined by the byte-order mark (BOM, U+FEFF) +** found in first character, which is removed, or in the absence of a BOM +** the byte order is the native byte order of the host +** machine for sqlite3_bind_text16() or the byte order specified in +** the 6th parameter for sqlite3_bind_text64().)^ +** ^If UTF16 input text contains invalid unicode +** characters, then SQLite might change those invalid characters +** into the unicode replacement character: U+FFFD. ** ** ^(In those routines that have a fourth argument, its value is the ** number of bytes in the parameter. To be clear: the value is the @@ -3901,21 +4608,27 @@ typedef struct sqlite3_context sqlite3_context; ** or sqlite3_bind_text16() or sqlite3_bind_text64() then ** that parameter must be the byte offset ** where the NUL terminator would occur assuming the string were NUL -** terminated. If any NUL characters occur at byte offsets less than +** terminated. If any NUL characters occurs at byte offsets less than ** the value of the fourth parameter then the resulting string value will ** contain embedded NULs. The result of expressions involving strings ** with embedded NULs is undefined. ** -** ^The fifth argument to the BLOB and string binding interfaces -** is a destructor used to dispose of the BLOB or -** string after SQLite has finished with it. ^The destructor is called -** to dispose of the BLOB or string even if the call to bind API fails. -** ^If the fifth argument is -** the special value [SQLITE_STATIC], then SQLite assumes that the -** information is in static, unmanaged space and does not need to be freed. -** ^If the fifth argument has the value [SQLITE_TRANSIENT], then -** SQLite makes its own private copy of the data immediately, before -** the sqlite3_bind_*() routine returns. +** ^The fifth argument to the BLOB and string binding interfaces controls +** or indicates the lifetime of the object referenced by the third parameter. +** These three options exist: +** ^ (1) A destructor to dispose of the BLOB or string after SQLite has finished +** with it may be passed. ^It is called to dispose of the BLOB or string even +** if the call to the bind API fails, except the destructor is not called if +** the third parameter is a NULL pointer or the fourth parameter is negative. +** ^ (2) The special constant, [SQLITE_STATIC], may be passed to indicate that +** the application remains responsible for disposing of the object. ^In this +** case, the object and the provided pointer to it must remain valid until +** either the prepared statement is finalized or the same SQL parameter is +** bound to something else, whichever occurs sooner. +** ^ (3) The constant, [SQLITE_TRANSIENT], may be passed to indicate that the +** object is to be copied prior to the return from sqlite3_bind_*(). ^The +** object and pointer to it must remain valid until then. ^SQLite will then +** manage the lifetime of its private copy. ** ** ^The sixth argument to sqlite3_bind_text64() must be one of ** [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE] @@ -4061,7 +4774,7 @@ SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*); ** METHOD: sqlite3_stmt ** ** ^Return the number of columns in the result set returned by the -** [prepared statement]. ^If this routine returns 0, that means the +** [prepared statement]. ^If this routine returns 0, that means the ** [prepared statement] returns no data (for example an [UPDATE]). ** ^However, just because this routine returns a positive number does not ** mean that one or more rows of data will be returned. ^A SELECT statement @@ -4129,7 +4842,7 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); ** ** ^If the Nth column returned by the statement is an expression or ** subquery and is not a column value, then all of these functions return -** NULL. ^These routine might also return NULL if a memory allocation error +** NULL. ^These routines might also return NULL if a memory allocation error ** occurs. ^Otherwise, they return the name of the attached database, table, ** or column that query result column was extracted from. ** @@ -4139,10 +4852,6 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); ** ^These APIs are only available if the library was compiled with the ** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol. ** -** If two or more threads call one or more of these routines against the same -** prepared statement and column at the same time then the results are -** undefined. -** ** If two or more threads call one or more ** [sqlite3_column_database_name | column metadata interfaces] ** for the same [prepared statement] and result column @@ -4247,7 +4956,7 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); ** For all versions of SQLite up to and including 3.6.23.1, a call to ** [sqlite3_reset()] was required after sqlite3_step() returned anything ** other than [SQLITE_ROW] before any subsequent invocation of -** sqlite3_step(). Failure to reset the prepared statement using +** sqlite3_step(). Failure to reset the prepared statement using ** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from ** sqlite3_step(). But after [version 3.6.23.1] ([dateof:3.6.23.1], ** sqlite3_step() began @@ -4279,7 +4988,7 @@ SQLITE_API int sqlite3_step(sqlite3_stmt*); ** ^The sqlite3_data_count(P) interface returns the number of columns in the ** current row of the result set of [prepared statement] P. ** ^If prepared statement P does not have results ready to return -** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of +** (via calls to the [sqlite3_column_int | sqlite3_column()] family of ** interfaces) then sqlite3_data_count(P) returns 0. ** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. ** ^The sqlite3_data_count(P) routine returns 0 if the previous call to @@ -4338,7 +5047,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** sqlite3_column_int64→64-bit INTEGER result ** sqlite3_column_text→UTF-8 TEXT result ** sqlite3_column_text16→UTF-16 TEXT result -** sqlite3_column_value→The result as an +** sqlite3_column_value→The result as an ** [sqlite3_value|unprotected sqlite3_value] object. **     ** sqlite3_column_bytes→Size of a BLOB @@ -4386,7 +5095,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** The return value of sqlite3_column_type() can be used to decide which ** of the first six interface should be used to extract the column value. ** The value returned by sqlite3_column_type() is only meaningful if no -** automatic type conversions have occurred for the value in question. +** automatic type conversions have occurred for the value in question. ** After a type conversion, the result of calling sqlite3_column_type() ** is undefined, though harmless. Future ** versions of SQLite may change the behavior of sqlite3_column_type() @@ -4414,7 +5123,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** the number of bytes in that string. ** ^If the result is NULL, then sqlite3_column_bytes16() returns zero. ** -** ^The values returned by [sqlite3_column_bytes()] and +** ^The values returned by [sqlite3_column_bytes()] and ** [sqlite3_column_bytes16()] do not include the zero terminators at the end ** of the string. ^For clarity: the values returned by ** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of @@ -4424,6 +5133,10 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** even empty strings, are always zero-terminated. ^The return ** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer. ** +** ^Strings returned by sqlite3_column_text16() always have the endianness +** which is native to the platform, regardless of the text encoding set +** for the database. +** ** Warning: ^The object returned by [sqlite3_column_value()] is an ** [unprotected sqlite3_value] object. In a multithreaded environment, ** an unprotected sqlite3_value object may only be used safely with @@ -4433,11 +5146,11 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** to routines like [sqlite3_value_int()], [sqlite3_value_text()], ** or [sqlite3_value_bytes()], the behavior is not threadsafe. ** Hence, the sqlite3_column_value() interface -** is normally only useful within the implementation of +** is normally only useful within the implementation of ** [application-defined SQL functions] or [virtual tables], not within ** top-level application code. ** -** The these routines may attempt to convert the datatype of the result. +** These routines may attempt to convert the datatype of the result. ** ^For example, if the internal representation is FLOAT and a text result ** is requested, [sqlite3_snprintf()] is used internally to perform the ** conversion automatically. ^(The following table details the conversions @@ -4462,7 +5175,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** TEXT BLOB No change ** BLOB INTEGER [CAST] to INTEGER ** BLOB FLOAT [CAST] to REAL -** BLOB TEXT Add a zero terminator if needed +** BLOB TEXT [CAST] to TEXT, ensure zero terminator ** ** )^ ** @@ -4514,11 +5227,25 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into ** [sqlite3_free()]. ** -** ^(If a memory allocation error occurs during the evaluation of any -** of these routines, a default value is returned. The default value -** is either the integer 0, the floating point number 0.0, or a NULL -** pointer. Subsequent calls to [sqlite3_errcode()] will return -** [SQLITE_NOMEM].)^ +** As long as the input parameters are correct, these routines will only +** fail if an out-of-memory error occurs during a format conversion. +** Only the following subset of interfaces are subject to out-of-memory +** errors: +** +** +** +** If an out-of-memory error occurs, then the return value from these +** routines is the same as if the column had contained an SQL NULL value. +** Valid SQL NULL returns can be distinguished from out-of-memory errors +** by invoking the [sqlite3_errcode()] immediately after the suspect +** return value is obtained and before any +** other SQLite interface is called on the same [database connection]. */ SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol); SQLITE_API double sqlite3_column_double(sqlite3_stmt*, int iCol); @@ -4572,14 +5299,26 @@ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt); ** ^The [sqlite3_reset(S)] interface resets the [prepared statement] S ** back to the beginning of its program. ** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE], -** or if [sqlite3_step(S)] has never before been called on S, -** then [sqlite3_reset(S)] returns [SQLITE_OK]. +** ^The return code from [sqlite3_reset(S)] indicates whether or not +** the previous evaluation of prepared statement S completed successfully. +** ^If [sqlite3_step(S)] has never before been called on S or if +** [sqlite3_step(S)] has not been called since the previous call +** to [sqlite3_reset(S)], then [sqlite3_reset(S)] will return +** [SQLITE_OK]. ** ** ^If the most recent call to [sqlite3_step(S)] for the ** [prepared statement] S indicated an error, then ** [sqlite3_reset(S)] returns an appropriate [error code]. +** ^The [sqlite3_reset(S)] interface might also return an [error code] +** if there were no prior errors but the process of resetting +** the prepared statement caused a new error. ^For example, if an +** [INSERT] statement with a [RETURNING] clause is only stepped one time, +** that one call to [sqlite3_step(S)] might return SQLITE_ROW but +** the overall statement might still fail and the [sqlite3_reset(S)] call +** might return SQLITE_BUSY if locking constraints prevent the +** database change from committing. Therefore, it is important that +** applications check the return code from [sqlite3_reset(S)] even if +** no prior call to [sqlite3_step(S)] indicated a problem. ** ** ^The [sqlite3_reset(S)] interface does not change the values ** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S. @@ -4589,17 +5328,17 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); /* ** CAPI3REF: Create Or Redefine SQL Functions ** KEYWORDS: {function creation routines} -** KEYWORDS: {application-defined SQL function} -** KEYWORDS: {application-defined SQL functions} ** METHOD: sqlite3 ** ** ^These functions (collectively known as "function creation routines") ** are used to add SQL functions or aggregates or to redefine the behavior -** of existing SQL functions or aggregates. The only differences between -** these routines are the text encoding expected for -** the second parameter (the name of the function being created) -** and the presence or absence of a destructor callback for -** the application data pointer. +** of existing SQL functions or aggregates. The only differences between +** the three "sqlite3_create_function*" routines are the text encoding +** expected for the second parameter (the name of the function being +** created) and the presence or absence of a destructor callback for +** the application data pointer. Function sqlite3_create_window_function() +** is similar, but allows the user to supply the extra callback functions +** needed by [aggregate window functions]. ** ** ^The first parameter is the [database connection] to which the SQL ** function is to be added. ^If an application uses more than one database @@ -4609,7 +5348,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** ^The second parameter is the name of the SQL function to be created or ** redefined. ^The length of the name is limited to 255 bytes in a UTF-8 ** representation, exclusive of the zero-terminator. ^Note that the name -** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. +** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. ** ^Any attempt to create a function with a longer name ** will result in [SQLITE_MISUSE] being returned. ** @@ -4624,7 +5363,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** ^The fourth parameter, eTextRep, specifies what ** [SQLITE_UTF8 | text encoding] this SQL function prefers for ** its parameters. The application should set this parameter to -** [SQLITE_UTF16LE] if the function implementation invokes +** [SQLITE_UTF16LE] if the function implementation invokes ** [sqlite3_value_text16le()] on an input, or [SQLITE_UTF16BE] if the ** implementation invokes [sqlite3_value_text16be()] on an input, or ** [SQLITE_UTF16] if [sqlite3_value_text16()] is used, or [SQLITE_UTF8] @@ -4642,10 +5381,26 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** perform additional optimizations on deterministic functions, so use ** of the [SQLITE_DETERMINISTIC] flag is recommended where possible. ** +** ^The fourth parameter may also optionally include the [SQLITE_DIRECTONLY] +** flag, which if present prevents the function from being invoked from +** within VIEWs, TRIGGERs, CHECK constraints, generated column expressions, +** index expressions, or the WHERE clause of partial indexes. +** +** For best security, the [SQLITE_DIRECTONLY] flag is recommended for +** all application-defined SQL functions that do not need to be +** used inside of triggers, view, CHECK constraints, or other elements of +** the database schema. This flags is especially recommended for SQL +** functions that have side effects or reveal internal application state. +** Without this flag, an attacker might be able to modify the schema of +** a database file to include invocations of the function with parameters +** chosen by the attacker, which the application will then execute when +** the database file is opened and read. +** ** ^(The fifth parameter is an arbitrary pointer. The implementation of the ** function can gain access to this pointer using [sqlite3_user_data()].)^ ** -** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are +** ^The sixth, seventh and eighth parameters passed to the three +** "sqlite3_create_function*" functions, xFunc, xStep and xFinal, are ** pointers to C-language functions that implement the SQL function or ** aggregate. ^A scalar SQL function requires an implementation of the xFunc ** callback only; NULL pointers must be passed as the xStep and xFinal @@ -4654,15 +5409,24 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** SQL function or aggregate, pass NULL pointers for all three function ** callbacks. ** -** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL, -** then it is destructor for the application data pointer. -** The destructor is invoked when the function is deleted, either by being -** overloaded or when the database connection closes.)^ -** ^The destructor is also invoked if the call to -** sqlite3_create_function_v2() fails. -** ^When the destructor callback of the tenth parameter is invoked, it -** is passed a single argument which is a copy of the application data -** pointer which was the fifth parameter to sqlite3_create_function_v2(). +** ^The sixth, seventh, eighth and ninth parameters (xStep, xFinal, xValue +** and xInverse) passed to sqlite3_create_window_function are pointers to +** C-language callbacks that implement the new function. xStep and xFinal +** must both be non-NULL. xValue and xInverse may either both be NULL, in +** which case a regular aggregate function is created, or must both be +** non-NULL, in which case the new function may be used as either an aggregate +** or aggregate window function. More details regarding the implementation +** of aggregate window functions are +** [user-defined window functions|available here]. +** +** ^(If the final parameter to sqlite3_create_function_v2() or +** sqlite3_create_window_function() is not NULL, then it is destructor for +** the application data pointer. The destructor is invoked when the function +** is deleted, either by being overloaded or when the database connection +** closes.)^ ^The destructor is also invoked if the call to +** sqlite3_create_function_v2() fails. ^When the destructor callback is +** invoked, it is passed a single argument which is a copy of the application +** data pointer which was the fifth parameter to sqlite3_create_function_v2(). ** ** ^It is permitted to register multiple implementations of the same ** functions with the same name but with either differing numbers of @@ -4672,7 +5436,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** nArg parameter is a better match than a function implementation with ** a negative nArg. ^A function where the preferred text encoding ** matches the database encoding is a better -** match than a function where the encoding is different. +** match than a function where the encoding is different. ** ^A function where the encoding difference is between UTF16le and UTF16be ** is a closer match than a function where the encoding difference is ** between UTF8 and UTF16. @@ -4715,6 +5479,18 @@ SQLITE_API int sqlite3_create_function_v2( void (*xFinal)(sqlite3_context*), void(*xDestroy)(void*) ); +SQLITE_API int sqlite3_create_window_function( + sqlite3 *db, + const char *zFunctionName, + int nArg, + int eTextRep, + void *pApp, + void (*xStep)(sqlite3_context*,int,sqlite3_value**), + void (*xFinal)(sqlite3_context*), + void (*xValue)(sqlite3_context*), + void (*xInverse)(sqlite3_context*,int,sqlite3_value**), + void(*xDestroy)(void*) +); /* ** CAPI3REF: Text Encodings @@ -4732,19 +5508,90 @@ SQLITE_API int sqlite3_create_function_v2( /* ** CAPI3REF: Function Flags ** -** These constants may be ORed together with the +** These constants may be ORed together with the ** [SQLITE_UTF8 | preferred text encoding] as the fourth argument ** to [sqlite3_create_function()], [sqlite3_create_function16()], or ** [sqlite3_create_function_v2()]. +** +**
    +** [[SQLITE_DETERMINISTIC]]
    SQLITE_DETERMINISTIC
    +** The SQLITE_DETERMINISTIC flag means that the new function always gives +** the same output when the input parameters are the same. +** The [abs|abs() function] is deterministic, for example, but +** [randomblob|randomblob()] is not. Functions must +** be deterministic in order to be used in certain contexts such as +** with the WHERE clause of [partial indexes] or in [generated columns]. +** SQLite might also optimize deterministic functions by factoring them +** out of inner loops. +**
    +** +** [[SQLITE_DIRECTONLY]]
    SQLITE_DIRECTONLY
    +** The SQLITE_DIRECTONLY flag means that the function may only be invoked +** from top-level SQL, and cannot be used in VIEWs or TRIGGERs nor in +** schema structures such as [CHECK constraints], [DEFAULT clauses], +** [expression indexes], [partial indexes], or [generated columns]. +**

    +** The SQLITE_DIRECTONLY flag is recommended for any +** [application-defined SQL function] +** that has side-effects or that could potentially leak sensitive information. +** This will prevent attacks in which an application is tricked +** into using a database file that has had its schema surreptitiously +** modified to invoke the application-defined function in ways that are +** harmful. +**

    +** Some people say it is good practice to set SQLITE_DIRECTONLY on all +** [application-defined SQL functions], regardless of whether or not they +** are security sensitive, as doing so prevents those functions from being used +** inside of the database schema, and thus ensures that the database +** can be inspected and modified using generic tools (such as the [CLI]) +** that do not have access to the application-defined functions. +**

    +** +** [[SQLITE_INNOCUOUS]]
    SQLITE_INNOCUOUS
    +** The SQLITE_INNOCUOUS flag means that the function is unlikely +** to cause problems even if misused. An innocuous function should have +** no side effects and should not depend on any values other than its +** input parameters. The [abs|abs() function] is an example of an +** innocuous function. +** The [load_extension() SQL function] is not innocuous because of its +** side effects. +**

    SQLITE_INNOCUOUS is similar to SQLITE_DETERMINISTIC, but is not +** exactly the same. The [random|random() function] is an example of a +** function that is innocuous but not deterministic. +**

    Some heightened security settings +** ([SQLITE_DBCONFIG_TRUSTED_SCHEMA] and [PRAGMA trusted_schema=OFF]) +** disable the use of SQL functions inside views and triggers and in +** schema structures such as [CHECK constraints], [DEFAULT clauses], +** [expression indexes], [partial indexes], and [generated columns] unless +** the function is tagged with SQLITE_INNOCUOUS. Most built-in functions +** are innocuous. Developers are advised to avoid using the +** SQLITE_INNOCUOUS flag for application-defined functions unless the +** function has been carefully audited and found to be free of potentially +** security-adverse side-effects and information-leaks. +**

    +** +** [[SQLITE_SUBTYPE]]
    SQLITE_SUBTYPE
    +** The SQLITE_SUBTYPE flag indicates to SQLite that a function may call +** [sqlite3_value_subtype()] to inspect the sub-types of its arguments. +** Specifying this flag makes no difference for scalar or aggregate user +** functions. However, if it is not specified for a user-defined window +** function, then any sub-types belonging to arguments passed to the window +** function may be discarded before the window function is called (i.e. +** sqlite3_value_subtype() will always return 0). +**
    +**
    */ -#define SQLITE_DETERMINISTIC 0x800 +#define SQLITE_DETERMINISTIC 0x000000800 +#define SQLITE_DIRECTONLY 0x000080000 +#define SQLITE_SUBTYPE 0x000100000 +#define SQLITE_INNOCUOUS 0x000200000 /* ** CAPI3REF: Deprecated Functions ** DEPRECATED ** ** These functions are [deprecated]. In order to maintain -** backwards compatibility with older code, these functions continue +** backwards compatibility with older code, these functions continue ** to be supported. However, new applications should avoid ** the use of these functions. To encourage programmers to avoid ** these functions, we will not explain what they do. @@ -4788,14 +5635,16 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** sqlite3_value_nochange   ** →  True if the column is unchanged in an UPDATE ** against a virtual table. +** sqlite3_value_frombind   +** →  True if value originated from a [bound parameter] ** ** ** Details: ** ** These routines extract type, size, and content information from ** [protected sqlite3_value] objects. Protected sqlite3_value objects -** are used to pass parameter information into implementation of -** [application-defined SQL functions] and [virtual tables]. +** are used to pass parameter information into the functions that +** implement [application-defined SQL functions] and [virtual tables]. ** ** These routines work only with [protected sqlite3_value] objects. ** Any attempt to use these routines on an [unprotected sqlite3_value] @@ -4810,11 +5659,11 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces ** extract UTF-16 strings as big-endian and little-endian respectively. ** -** ^If [sqlite3_value] object V was initialized +** ^If [sqlite3_value] object V was initialized ** using [sqlite3_bind_pointer(S,I,P,X,D)] or [sqlite3_result_pointer(C,P,X,D)] ** and if X and Y are strings that compare equal according to strcmp(X,Y), ** then sqlite3_value_pointer(V,Y) will return the pointer P. ^Otherwise, -** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer() +** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer() ** routine is part of the [pointer passing interface] added for SQLite 3.20.0. ** ** ^(The sqlite3_value_type(V) interface returns the @@ -4849,6 +5698,11 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** than within an [xUpdate] method call for an UPDATE statement, then ** the return value is arbitrary and meaningless. ** +** ^The sqlite3_value_frombind(X) interface returns non-zero if the +** value X originated from one of the [sqlite3_bind_int|sqlite3_bind()] +** interfaces. ^If X comes from an SQL literal value, or a table column, +** or an expression, then sqlite3_value_frombind(X) returns zero. +** ** Please pay particular attention to the fact that the pointer returned ** from [sqlite3_value_blob()], [sqlite3_value_text()], or ** [sqlite3_value_text16()] can be invalidated by a subsequent call to @@ -4857,6 +5711,28 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** ** These routines must be called from the same thread as ** the SQL function that supplied the [sqlite3_value*] parameters. +** +** As long as the input parameter is correct, these routines can only +** fail if an out-of-memory error occurs during a format conversion. +** Only the following subset of interfaces are subject to out-of-memory +** errors: +** +** +** +** If an out-of-memory error occurs, then the return value from these +** routines is the same as if the column had contained an SQL NULL value. +** Valid SQL NULL returns can be distinguished from out-of-memory errors +** by invoking the [sqlite3_errcode()] immediately after the suspect +** return value is obtained and before any +** other SQLite interface is called on the same [database connection]. */ SQLITE_API const void *sqlite3_value_blob(sqlite3_value*); SQLITE_API double sqlite3_value_double(sqlite3_value*); @@ -4872,6 +5748,29 @@ SQLITE_API int sqlite3_value_bytes16(sqlite3_value*); SQLITE_API int sqlite3_value_type(sqlite3_value*); SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*); SQLITE_API int sqlite3_value_nochange(sqlite3_value*); +SQLITE_API int sqlite3_value_frombind(sqlite3_value*); + +/* +** CAPI3REF: Report the internal text encoding state of an sqlite3_value object +** METHOD: sqlite3_value +** +** ^(The sqlite3_value_encoding(X) interface returns one of [SQLITE_UTF8], +** [SQLITE_UTF16BE], or [SQLITE_UTF16LE] according to the current text encoding +** of the value X, assuming that X has type TEXT.)^ If sqlite3_value_type(X) +** returns something other than SQLITE_TEXT, then the return value from +** sqlite3_value_encoding(X) is meaningless. ^Calls to +** [sqlite3_value_text(X)], [sqlite3_value_text16(X)], [sqlite3_value_text16be(X)], +** [sqlite3_value_text16le(X)], [sqlite3_value_bytes(X)], or +** [sqlite3_value_bytes16(X)] might change the encoding of the value X and +** thus change the return from subsequent calls to sqlite3_value_encoding(X). +** +** This routine is intended for used by applications that test and validate +** the SQLite implementation. This routine is inquiring about the opaque +** internal state of an [sqlite3_value] object. Ordinary applications should +** not need to know what the internal state of an sqlite3_value object is and +** hence should not need to use this interface. +*/ +SQLITE_API int sqlite3_value_encoding(sqlite3_value*); /* ** CAPI3REF: Finding The Subtype Of SQL Values @@ -4893,7 +5792,8 @@ SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value*); ** object D and returns a pointer to that copy. ^The [sqlite3_value] returned ** is a [protected sqlite3_value] object even if the input is not. ** ^The sqlite3_value_dup(V) interface returns NULL if V is NULL or if a -** memory allocation fails. +** memory allocation fails. ^If V is a [pointer value], then the result +** of sqlite3_value_dup(V) is a NULL value. ** ** ^The sqlite3_value_free(V) interface frees an [sqlite3_value] object ** previously obtained from [sqlite3_value_dup()]. ^If V is a NULL pointer @@ -4909,9 +5809,9 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*); ** Implementations of aggregate SQL functions use this ** routine to allocate memory for storing their state. ** -** ^The first time the sqlite3_aggregate_context(C,N) routine is called -** for a particular aggregate function, SQLite -** allocates N of memory, zeroes out that memory, and returns a pointer +** ^The first time the sqlite3_aggregate_context(C,N) routine is called +** for a particular aggregate function, SQLite allocates +** N bytes of memory, zeroes out that memory, and returns a pointer ** to the new memory. ^On second and subsequent calls to ** sqlite3_aggregate_context() for the same aggregate function instance, ** the same buffer is returned. Sqlite3_aggregate_context() is normally @@ -4922,19 +5822,19 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*); ** In those cases, sqlite3_aggregate_context() might be called for the ** first time from within xFinal().)^ ** -** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer +** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer ** when first called if N is less than or equal to zero or if a memory -** allocate error occurs. +** allocation error occurs. ** ** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is ** determined by the N parameter on first successful call. Changing the -** value of N in subsequent call to sqlite3_aggregate_context() within +** value of N in any subsequent call to sqlite3_aggregate_context() within ** the same aggregate function instance will not resize the memory ** allocation.)^ Within the xFinal callback, it is customary to set -** N=0 in calls to sqlite3_aggregate_context(C,N) so that no +** N=0 in calls to sqlite3_aggregate_context(C,N) so that no ** pointless memory allocations occur. ** -** ^SQLite automatically frees the memory allocated by +** ^SQLite automatically frees the memory allocated by ** sqlite3_aggregate_context() when the aggregate query concludes. ** ** The first parameter must be a copy of the @@ -4984,7 +5884,7 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); ** some circumstances the associated metadata may be preserved. An example ** of where this might be useful is in a regular-expression matching ** function. The compiled version of the regular expression can be stored as -** metadata associated with the pattern string. +** metadata associated with the pattern string. ** Then as long as the pattern string remains the same, ** the compiled regular expression can be reused on multiple ** invocations of the same function. @@ -5010,10 +5910,10 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); ** SQL statement)^, or **
  • ^(when sqlite3_set_auxdata() is invoked again on the same ** parameter)^, or -**
  • ^(during the original sqlite3_set_auxdata() call when a memory +**
  • ^(during the original sqlite3_set_auxdata() call when a memory ** allocation error occurs.)^ ** -** Note the last bullet in particular. The destructor X in +** Note the last bullet in particular. The destructor X in ** sqlite3_set_auxdata(C,N,P,X) might be called immediately, before the ** sqlite3_set_auxdata() interface even returns. Hence sqlite3_set_auxdata() ** should be called near the end of the function implementation and the @@ -5085,8 +5985,9 @@ typedef void (*sqlite3_destructor_type)(void*); ** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16() ** as the text of an error message. ^SQLite interprets the error ** message string from sqlite3_result_error() as UTF-8. ^SQLite -** interprets the string from sqlite3_result_error16() as UTF-16 in native -** byte order. ^If the third parameter to sqlite3_result_error() +** interprets the string from sqlite3_result_error16() as UTF-16 using +** the same [byte-order determination rules] as [sqlite3_bind_text16()]. +** ^If the third parameter to sqlite3_result_error() ** or sqlite3_result_error16() is negative then SQLite takes as the error ** message all text up through the first zero character. ** ^If the third parameter to sqlite3_result_error() or @@ -5128,9 +6029,10 @@ typedef void (*sqlite3_destructor_type)(void*); ** of [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE]. ** ^SQLite takes the text result from the application from ** the 2nd parameter of the sqlite3_result_text* interfaces. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is negative, then SQLite takes result text from the 2nd parameter -** through the first zero character. +** ^If the 3rd parameter to any of the sqlite3_result_text* interfaces +** other than sqlite3_result_text64() is negative, then SQLite computes +** the string length itself by searching the 2nd parameter for the first +** zero character. ** ^If the 3rd parameter to the sqlite3_result_text* interfaces ** is non-negative, then as many bytes (not characters) of the text ** pointed to by the 2nd parameter are taken as the application-defined @@ -5154,6 +6056,25 @@ typedef void (*sqlite3_destructor_type)(void*); ** then SQLite makes a copy of the result into space obtained ** from [sqlite3_malloc()] before it returns. ** +** ^For the sqlite3_result_text16(), sqlite3_result_text16le(), and +** sqlite3_result_text16be() routines, and for sqlite3_result_text64() +** when the encoding is not UTF8, if the input UTF16 begins with a +** byte-order mark (BOM, U+FEFF) then the BOM is removed from the +** string and the rest of the string is interpreted according to the +** byte-order specified by the BOM. ^The byte-order specified by +** the BOM at the beginning of the text overrides the byte-order +** specified by the interface procedure. ^So, for example, if +** sqlite3_result_text16le() is invoked with text that begins +** with bytes 0xfe, 0xff (a big-endian byte-order mark) then the +** first two bytes of input are skipped and the remaining input +** is interpreted as UTF16BE text. +** +** ^For UTF16 input text to the sqlite3_result_text16(), +** sqlite3_result_text16be(), sqlite3_result_text16le(), and +** sqlite3_result_text64() routines, if the text contains invalid +** UTF16 characters, the invalid characters might be converted +** into the unicode replacement character, U+FFFD. +** ** ^The sqlite3_result_value() interface sets the result of ** the application-defined function to be a copy of the ** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The @@ -5166,7 +6087,7 @@ typedef void (*sqlite3_destructor_type)(void*); ** ** ^The sqlite3_result_pointer(C,P,T,D) interface sets the result to an ** SQL NULL value, just like [sqlite3_result_null(C)], except that it -** also associates the host-language pointer P or type T with that +** also associates the host-language pointer P or type T with that ** NULL value such that the pointer can be retrieved within an ** [application-defined SQL function] using [sqlite3_value_pointer()]. ** ^If the D parameter is not NULL, then it is a pointer to a destructor @@ -5208,8 +6129,8 @@ SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n); ** METHOD: sqlite3_context ** ** The sqlite3_result_subtype(C,T) function causes the subtype of -** the result from the [application-defined SQL function] with -** [sqlite3_context] C to be the value T. Only the lower 8 bits +** the result from the [application-defined SQL function] with +** [sqlite3_context] C to be the value T. Only the lower 8 bits ** of the subtype T are preserved in current versions of SQLite; ** higher order bits are discarded. ** The number of subtype bytes preserved by SQLite might increase @@ -5239,7 +6160,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); **
  • [SQLITE_UTF16_ALIGNED]. ** )^ ** ^The eTextRep argument determines the encoding of strings passed -** to the collating function callback, xCallback. +** to the collating function callback, xCompare. ** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep ** force strings to be UTF16 with native byte order. ** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin @@ -5248,18 +6169,19 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** ^The fourth argument, pArg, is an application data pointer that is passed ** through as the first argument to the collating function callback. ** -** ^The fifth argument, xCallback, is a pointer to the collating function. +** ^The fifth argument, xCompare, is a pointer to the collating function. ** ^Multiple collating functions can be registered using the same name but ** with different eTextRep parameters and SQLite will use whichever ** function requires the least amount of data transformation. -** ^If the xCallback argument is NULL then the collating function is +** ^If the xCompare argument is NULL then the collating function is ** deleted. ^When all collating functions having the same name are deleted, ** that collation is no longer usable. ** -** ^The collating function callback is invoked with a copy of the pArg +** ^The collating function callback is invoked with a copy of the pArg ** application data pointer and with two strings in the encoding specified -** by the eTextRep argument. The collating function must return an -** integer that is negative, zero, or positive +** by the eTextRep argument. The two integer parameters to the collating +** function callback are the length of the two strings, in bytes. The collating +** function must return an integer that is negative, zero, or positive ** if the first string is less than, equal to, or greater than the second, ** respectively. A collating function must always return the same answer ** given the same inputs. If two or more collating functions are registered @@ -5276,7 +6198,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** ** ** If a collating function fails any of the above constraints and that -** collating function is registered and used, then the behavior of SQLite +** collating function is registered and used, then the behavior of SQLite ** is undefined. ** ** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation() @@ -5286,36 +6208,36 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** calls to the collation creation functions or when the ** [database connection] is closed using [sqlite3_close()]. ** -** ^The xDestroy callback is not called if the +** ^The xDestroy callback is not called if the ** sqlite3_create_collation_v2() function fails. Applications that invoke -** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should +** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should ** check the return code and dispose of the application data pointer ** themselves rather than expecting SQLite to deal with it for them. -** This is different from every other SQLite interface. The inconsistency -** is unfortunate but cannot be changed without breaking backwards +** This is different from every other SQLite interface. The inconsistency +** is unfortunate but cannot be changed without breaking backwards ** compatibility. ** ** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()]. */ SQLITE_API int sqlite3_create_collation( - sqlite3*, - const char *zName, - int eTextRep, + sqlite3*, + const char *zName, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*) ); SQLITE_API int sqlite3_create_collation_v2( - sqlite3*, - const char *zName, - int eTextRep, + sqlite3*, + const char *zName, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*), void(*xDestroy)(void*) ); SQLITE_API int sqlite3_create_collation16( - sqlite3*, + sqlite3*, const void *zName, - int eTextRep, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*) ); @@ -5348,64 +6270,19 @@ SQLITE_API int sqlite3_create_collation16( ** [sqlite3_create_collation_v2()]. */ SQLITE_API int sqlite3_collation_needed( - sqlite3*, - void*, + sqlite3*, + void*, void(*)(void*,sqlite3*,int eTextRep,const char*) ); SQLITE_API int sqlite3_collation_needed16( - sqlite3*, + sqlite3*, void*, void(*)(void*,sqlite3*,int eTextRep,const void*) ); -#ifdef SQLITE_HAS_CODEC -/* -** Specify the key for an encrypted database. This routine should be -** called right after sqlite3_open(). -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_key( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The key */ -); -SQLITE_API int sqlite3_key_v2( - sqlite3 *db, /* Database to be rekeyed */ - const char *zDbName, /* Name of the database */ - const void *pKey, int nKey /* The key */ -); - -/* -** Change the key on an open database. If the current database is not -** encrypted, this routine will encrypt it. If pNew==0 or nNew==0, the -** database is decrypted. -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_rekey( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The new key */ -); -SQLITE_API int sqlite3_rekey_v2( - sqlite3 *db, /* Database to be rekeyed */ - const char *zDbName, /* Name of the database */ - const void *pKey, int nKey /* The new key */ -); - -/* -** Specify the activation key for a SEE database. Unless -** activated, none of the SEE routines will work. -*/ -SQLITE_API void sqlite3_activate_see( - const char *zPassPhrase /* Activation phrase */ -); -#endif - #ifdef SQLITE_ENABLE_CEROD /* -** Specify the activation key for a CEROD database. Unless +** Specify the activation key for a CEROD database. Unless ** activated, none of the CEROD routines will work. */ SQLITE_API void sqlite3_activate_cerod( @@ -5429,6 +6306,13 @@ SQLITE_API void sqlite3_activate_cerod( ** of the default VFS is not implemented correctly, or not implemented at ** all, then the behavior of sqlite3_sleep() may deviate from the description ** in the previous paragraphs. +** +** If a negative argument is passed to sqlite3_sleep() the results vary by +** VFS and operating system. Some system treat a negative argument as an +** instruction to sleep forever. Others understand it to mean do not sleep +** at all. ^In SQLite version 3.42.0 and later, a negative +** argument passed into sqlite3_sleep() is changed to zero before it is relayed +** down into the xSleep method of the VFS. */ SQLITE_API int sqlite3_sleep(int); @@ -5461,7 +6345,7 @@ SQLITE_API int sqlite3_sleep(int); ** ^The [temp_store_directory pragma] may modify this variable and cause ** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, ** the [temp_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from +** that this variable points to is held in memory obtained from ** [sqlite3_malloc] and the pragma may attempt to free that memory ** using [sqlite3_free]. ** Hence, if this variable is modified directly, either it should be @@ -5518,7 +6402,7 @@ SQLITE_API SQLITE_EXTERN char *sqlite3_temp_directory; ** ^The [data_store_directory pragma] may modify this variable and cause ** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, ** the [data_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from +** that this variable points to is held in memory obtained from ** [sqlite3_malloc] and the pragma may attempt to free that memory ** using [sqlite3_free]. ** Hence, if this variable is modified directly, either it should be @@ -5599,22 +6483,59 @@ SQLITE_API int sqlite3_get_autocommit(sqlite3*); */ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*); +/* +** CAPI3REF: Return The Schema Name For A Database Connection +** METHOD: sqlite3 +** +** ^The sqlite3_db_name(D,N) interface returns a pointer to the schema name +** for the N-th database on database connection D, or a NULL pointer of N is +** out of range. An N value of 0 means the main database file. An N of 1 is +** the "temp" schema. Larger values of N correspond to various ATTACH-ed +** databases. +** +** Space to hold the string that is returned by sqlite3_db_name() is managed +** by SQLite itself. The string might be deallocated by any operation that +** changes the schema, including [ATTACH] or [DETACH] or calls to +** [sqlite3_serialize()] or [sqlite3_deserialize()], even operations that +** occur on a different thread. Applications that need to +** remember the string long-term should make their own copy. Applications that +** are accessing the same database connection simultaneously on multiple +** threads should mutex-protect calls to this API and should make their own +** private copy of the result prior to releasing the mutex. +*/ +SQLITE_API const char *sqlite3_db_name(sqlite3 *db, int N); + /* ** CAPI3REF: Return The Filename For A Database Connection ** METHOD: sqlite3 ** -** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename -** associated with database N of connection D. ^The main database file -** has the name "main". If there is no attached database N on the database +** ^The sqlite3_db_filename(D,N) interface returns a pointer to the filename +** associated with database N of connection D. +** ^If there is no attached database N on the database ** connection D, or if database N is a temporary or in-memory database, then -** a NULL pointer is returned. +** this function will return either a NULL pointer or an empty string. +** +** ^The string value returned by this routine is owned and managed by +** the database connection. ^The value will be valid until the database N +** is [DETACH]-ed or until the database connection closes. ** ** ^The filename returned by this function is the output of the ** xFullPathname method of the [VFS]. ^In other words, the filename ** will be an absolute pathname, even if the filename used ** to open the database originally was a URI or relative pathname. +** +** If the filename pointer returned by this routine is not NULL, then it +** can be used as the filename input parameter to these routines: +** */ -SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); +SQLITE_API sqlite3_filename sqlite3_db_filename(sqlite3 *db, const char *zDbName); /* ** CAPI3REF: Determine if a database is read-only @@ -5626,6 +6547,57 @@ SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); */ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName); +/* +** CAPI3REF: Determine the transaction state of a database +** METHOD: sqlite3 +** +** ^The sqlite3_txn_state(D,S) interface returns the current +** [transaction state] of schema S in database connection D. ^If S is NULL, +** then the highest transaction state of any schema on database connection D +** is returned. Transaction states are (in order of lowest to highest): +**
      +**
    1. SQLITE_TXN_NONE +**
    2. SQLITE_TXN_READ +**
    3. SQLITE_TXN_WRITE +**
    +** ^If the S argument to sqlite3_txn_state(D,S) is not the name of +** a valid schema, then -1 is returned. +*/ +SQLITE_API int sqlite3_txn_state(sqlite3*,const char *zSchema); + +/* +** CAPI3REF: Allowed return values from [sqlite3_txn_state()] +** KEYWORDS: {transaction state} +** +** These constants define the current transaction state of a database file. +** ^The [sqlite3_txn_state(D,S)] interface returns one of these +** constants in order to describe the transaction state of schema S +** in [database connection] D. +** +**
    +** [[SQLITE_TXN_NONE]]
    SQLITE_TXN_NONE
    +**
    The SQLITE_TXN_NONE state means that no transaction is currently +** pending.
    +** +** [[SQLITE_TXN_READ]]
    SQLITE_TXN_READ
    +**
    The SQLITE_TXN_READ state means that the database is currently +** in a read transaction. Content has been read from the database file +** but nothing in the database file has changed. The transaction state +** will advanced to SQLITE_TXN_WRITE if any changes occur and there are +** no other conflicting concurrent write transactions. The transaction +** state will revert to SQLITE_TXN_NONE following a [ROLLBACK] or +** [COMMIT].
    +** +** [[SQLITE_TXN_WRITE]]
    SQLITE_TXN_WRITE
    +**
    The SQLITE_TXN_WRITE state means that the database is currently +** in a write transaction. Content has been written to the database file +** but has not yet committed. The transaction state will change to +** to SQLITE_TXN_NONE at the next [ROLLBACK] or [COMMIT].
    +*/ +#define SQLITE_TXN_NONE 0 +#define SQLITE_TXN_READ 1 +#define SQLITE_TXN_WRITE 2 + /* ** CAPI3REF: Find the next prepared statement ** METHOD: sqlite3 @@ -5692,6 +6664,72 @@ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*); SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); +/* +** CAPI3REF: Autovacuum Compaction Amount Callback +** METHOD: sqlite3 +** +** ^The sqlite3_autovacuum_pages(D,C,P,X) interface registers a callback +** function C that is invoked prior to each autovacuum of the database +** file. ^The callback is passed a copy of the generic data pointer (P), +** the schema-name of the attached database that is being autovacuumed, +** the size of the database file in pages, the number of free pages, +** and the number of bytes per page, respectively. The callback should +** return the number of free pages that should be removed by the +** autovacuum. ^If the callback returns zero, then no autovacuum happens. +** ^If the value returned is greater than or equal to the number of +** free pages, then a complete autovacuum happens. +** +**

    ^If there are multiple ATTACH-ed database files that are being +** modified as part of a transaction commit, then the autovacuum pages +** callback is invoked separately for each file. +** +**

    The callback is not reentrant. The callback function should +** not attempt to invoke any other SQLite interface. If it does, bad +** things may happen, including segmentation faults and corrupt database +** files. The callback function should be a simple function that +** does some arithmetic on its input parameters and returns a result. +** +** ^The X parameter to sqlite3_autovacuum_pages(D,C,P,X) is an optional +** destructor for the P parameter. ^If X is not NULL, then X(P) is +** invoked whenever the database connection closes or when the callback +** is overwritten by another invocation of sqlite3_autovacuum_pages(). +** +**

    ^There is only one autovacuum pages callback per database connection. +** ^Each call to the sqlite3_autovacuum_pages() interface overrides all +** previous invocations for that database connection. ^If the callback +** argument (C) to sqlite3_autovacuum_pages(D,C,P,X) is a NULL pointer, +** then the autovacuum steps callback is cancelled. The return value +** from sqlite3_autovacuum_pages() is normally SQLITE_OK, but might +** be some other error code if something goes wrong. The current +** implementation will only return SQLITE_OK or SQLITE_MISUSE, but other +** return codes might be added in future releases. +** +**

    If no autovacuum pages callback is specified (the usual case) or +** a NULL pointer is provided for the callback, +** then the default behavior is to vacuum all free pages. So, in other +** words, the default behavior is the same as if the callback function +** were something like this: +** +** 

    +**     unsigned int demonstration_autovac_pages_callback(
+**       void *pClientData,
+**       const char *zSchema,
+**       unsigned int nDbPage,
+**       unsigned int nFreePage,
+**       unsigned int nBytePerPage
+**     ){
+**       return nFreePage;
+**     }
+**
    +*/ +SQLITE_API int sqlite3_autovacuum_pages( + sqlite3 *db, + unsigned int(*)(void*,const char*,unsigned int,unsigned int,unsigned int), + void*, + void(*)(void*) +); + + /* ** CAPI3REF: Data Change Notification Callbacks ** METHOD: sqlite3 @@ -5716,7 +6754,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** ^In the case of an update, this is the [rowid] after the update takes place. ** ** ^(The update hook is not invoked when internal system tables are -** modified (i.e. sqlite_master and sqlite_sequence).)^ +** modified (i.e. sqlite_sequence).)^ ** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified. ** ** ^In the current implementation, the update hook @@ -5742,7 +6780,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** and [sqlite3_preupdate_hook()] interfaces. */ SQLITE_API void *sqlite3_update_hook( - sqlite3*, + sqlite3*, void(*)(void *,int ,char const *,char const *,sqlite3_int64), void* ); @@ -5755,26 +6793,35 @@ SQLITE_API void *sqlite3_update_hook( ** to the same database. Sharing is enabled if the argument is true ** and disabled if the argument is false.)^ ** +** This interface is omitted if SQLite is compiled with +** [-DSQLITE_OMIT_SHARED_CACHE]. The [-DSQLITE_OMIT_SHARED_CACHE] +** compile-time option is recommended because the +** [use of shared cache mode is discouraged]. +** ** ^Cache sharing is enabled and disabled for an entire process. -** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]). +** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]). ** In prior versions of SQLite, ** sharing was enabled or disabled for each thread separately. ** ** ^(The cache sharing mode set by this interface effects all subsequent ** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()]. -** Existing database connections continue use the sharing mode +** Existing database connections continue to use the sharing mode ** that was in effect at the time they were opened.)^ ** ** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled ** successfully. An [error code] is returned otherwise.)^ ** -** ^Shared cache is disabled by default. But this might change in -** future releases of SQLite. Applications that care about shared -** cache setting should set it explicitly. +** ^Shared cache is disabled by default. It is recommended that it stay +** that way. In other words, do not use this routine. This interface +** continues to be provided for historical compatibility, but its use is +** discouraged. Any use of shared cache is discouraged. If shared cache +** must be used, it is recommended that shared cache only be enabled for +** individual database connections using the [sqlite3_open_v2()] interface +** with the [SQLITE_OPEN_SHAREDCACHE] flag. ** ** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0 -** and will always return SQLITE_MISUSE. On those systems, -** shared cache mode should be enabled per-database connection via +** and will always return SQLITE_MISUSE. On those systems, +** shared cache mode should be enabled per-database connection via ** [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE]. ** ** This interface is threadsafe on processors where writing a @@ -5817,6 +6864,9 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*); /* ** CAPI3REF: Impose A Limit On Heap Size ** +** These interfaces impose limits on the amount of heap memory that will be +** by all database connections within a single process. +** ** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the ** soft limit on the amount of heap memory that may be allocated by SQLite. ** ^SQLite strives to keep heap memory utilization below the soft heap @@ -5824,23 +6874,44 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*); ** as heap memory usages approaches the limit. ** ^The soft heap limit is "soft" because even though SQLite strives to stay ** below the limit, it will exceed the limit rather than generate -** an [SQLITE_NOMEM] error. In other words, the soft heap limit +** an [SQLITE_NOMEM] error. In other words, the soft heap limit ** is advisory only. ** -** ^The return value from sqlite3_soft_heap_limit64() is the size of -** the soft heap limit prior to the call, or negative in the case of an +** ^The sqlite3_hard_heap_limit64(N) interface sets a hard upper bound of +** N bytes on the amount of memory that will be allocated. ^The +** sqlite3_hard_heap_limit64(N) interface is similar to +** sqlite3_soft_heap_limit64(N) except that memory allocations will fail +** when the hard heap limit is reached. +** +** ^The return value from both sqlite3_soft_heap_limit64() and +** sqlite3_hard_heap_limit64() is the size of +** the heap limit prior to the call, or negative in the case of an ** error. ^If the argument N is negative -** then no change is made to the soft heap limit. Hence, the current -** size of the soft heap limit can be determined by invoking -** sqlite3_soft_heap_limit64() with a negative argument. +** then no change is made to the heap limit. Hence, the current +** size of heap limits can be determined by invoking +** sqlite3_soft_heap_limit64(-1) or sqlite3_hard_heap_limit(-1). ** -** ^If the argument N is zero then the soft heap limit is disabled. +** ^Setting the heap limits to zero disables the heap limiter mechanism. ** -** ^(The soft heap limit is not enforced in the current implementation +** ^The soft heap limit may not be greater than the hard heap limit. +** ^If the hard heap limit is enabled and if sqlite3_soft_heap_limit(N) +** is invoked with a value of N that is greater than the hard heap limit, +** the soft heap limit is set to the value of the hard heap limit. +** ^The soft heap limit is automatically enabled whenever the hard heap +** limit is enabled. ^When sqlite3_hard_heap_limit64(N) is invoked and +** the soft heap limit is outside the range of 1..N, then the soft heap +** limit is set to N. ^Invoking sqlite3_soft_heap_limit64(0) when the +** hard heap limit is enabled makes the soft heap limit equal to the +** hard heap limit. +** +** The memory allocation limits can also be adjusted using +** [PRAGMA soft_heap_limit] and [PRAGMA hard_heap_limit]. +** +** ^(The heap limits are not enforced in the current implementation ** if one or more of following conditions are true: ** ** )^ ** -** Beginning with SQLite [version 3.7.3] ([dateof:3.7.3]), -** the soft heap limit is enforced -** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT] -** compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT], -** the soft heap limit is enforced on every memory allocation. Without -** [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced -** when memory is allocated by the page cache. Testing suggests that because -** the page cache is the predominate memory user in SQLite, most -** applications will achieve adequate soft heap limit enforcement without -** the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -** -** The circumstances under which SQLite will enforce the soft heap limit may +** The circumstances under which SQLite will enforce the heap limits may ** changes in future releases of SQLite. */ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N); +SQLITE_API sqlite3_int64 sqlite3_hard_heap_limit64(sqlite3_int64 N); /* ** CAPI3REF: Deprecated Soft Heap Limit Interface @@ -5889,7 +6950,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); ** interface returns SQLITE_OK and fills in the non-NULL pointers in ** the final five arguments with appropriate values if the specified ** column exists. ^The sqlite3_table_column_metadata() interface returns -** SQLITE_ERROR and if the specified column does not exist. +** SQLITE_ERROR if the specified column does not exist. ** ^If the column-name parameter to sqlite3_table_column_metadata() is a ** NULL pointer, then this routine simply checks for the existence of the ** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it @@ -5929,7 +6990,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); ** ** ^If the specified table is actually a view, an [error code] is returned. ** -** ^If the specified column is "rowid", "oid" or "_rowid_" and the table +** ^If the specified column is "rowid", "oid" or "_rowid_" and the table ** is not a [WITHOUT ROWID] table and an ** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output ** parameters are set for the explicitly declared column. ^(If there is no @@ -5995,7 +7056,7 @@ SQLITE_API int sqlite3_table_column_metadata( ** prior to calling this API, ** otherwise an error will be returned. ** -** Security warning: It is recommended that the +** Security warning: It is recommended that the ** [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this ** interface. The use of the [sqlite3_enable_load_extension()] interface ** should be avoided. This will keep the SQL function [load_extension()] @@ -6031,7 +7092,7 @@ SQLITE_API int sqlite3_load_extension( ** to enable or disable only the C-API.)^ ** ** Security warning: It is recommended that extension loading -** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method +** be enabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method ** rather than this interface, so the [load_extension()] SQL function ** remains disabled. This will prevent SQL injections from giving attackers ** access to extension loading capabilities. @@ -6082,7 +7143,7 @@ SQLITE_API int sqlite3_auto_extension(void(*xEntryPoint)(void)); ** ^The [sqlite3_cancel_auto_extension(X)] interface unregisters the ** initialization routine X that was registered using a prior call to ** [sqlite3_auto_extension(X)]. ^The [sqlite3_cancel_auto_extension(X)] -** routine returns 1 if initialization routine X was successfully +** routine returns 1 if initialization routine X was successfully ** unregistered and it returns 0 if X was not on the list of initialization ** routines. */ @@ -6096,15 +7157,6 @@ SQLITE_API int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void)); */ SQLITE_API void sqlite3_reset_auto_extension(void); -/* -** The interface to the virtual-table mechanism is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - /* ** Structures used by the virtual table interface */ @@ -6117,8 +7169,8 @@ typedef struct sqlite3_module sqlite3_module; ** CAPI3REF: Virtual Table Object ** KEYWORDS: sqlite3_module {virtual table module} ** -** This structure, sometimes called a "virtual table module", -** defines the implementation of a [virtual tables]. +** This structure, sometimes called a "virtual table module", +** defines the implementation of a [virtual table]. ** This structure consists mostly of methods for the module. ** ** ^A virtual table module is created by filling in a persistent @@ -6157,11 +7209,14 @@ struct sqlite3_module { void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), void **ppArg); int (*xRename)(sqlite3_vtab *pVtab, const char *zNew); - /* The methods above are in version 1 of the sqlite_module object. Those + /* The methods above are in version 1 of the sqlite_module object. Those ** below are for version 2 and greater. */ int (*xSavepoint)(sqlite3_vtab *pVTab, int); int (*xRelease)(sqlite3_vtab *pVTab, int); int (*xRollbackTo)(sqlite3_vtab *pVTab, int); + /* The methods above are in versions 1 and 2 of the sqlite_module object. + ** Those below are for version 3 and greater. */ + int (*xShadowName)(const char*); }; /* @@ -6204,7 +7259,7 @@ struct sqlite3_module { ** required by SQLite. If the table has at least 64 columns and any column ** to the right of the first 63 is required, then bit 63 of colUsed is also ** set. In other words, column iCol may be required if the expression -** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to +** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to ** non-zero. ** ** The [xBestIndex] method must fill aConstraintUsage[] with information @@ -6212,12 +7267,18 @@ struct sqlite3_module { ** the right-hand side of the corresponding aConstraint[] is evaluated ** and becomes the argvIndex-th entry in argv. ^(If aConstraintUsage[].omit ** is true, then the constraint is assumed to be fully handled by the -** virtual table and is not checked again by SQLite.)^ +** virtual table and might not be checked again by the byte code.)^ ^(The +** aConstraintUsage[].omit flag is an optimization hint. When the omit flag +** is left in its default setting of false, the constraint will always be +** checked separately in byte code. If the omit flag is change to true, then +** the constraint may or may not be checked in byte code. In other words, +** when the omit flag is true there is no guarantee that the constraint will +** not be checked again using byte code.)^ ** -** ^The idxNum and idxPtr values are recorded and passed into the +** ^The idxNum and idxStr values are recorded and passed into the ** [xFilter] method. -** ^[sqlite3_free()] is used to free idxPtr if and only if -** needToFreeIdxPtr is true. +** ^[sqlite3_free()] is used to free idxStr if and only if +** needToFreeIdxStr is true. ** ** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in ** the correct order to satisfy the ORDER BY clause so that no separate @@ -6225,17 +7286,17 @@ struct sqlite3_module { ** ** ^The estimatedCost value is an estimate of the cost of a particular ** strategy. A cost of N indicates that the cost of the strategy is similar -** to a linear scan of an SQLite table with N rows. A cost of log(N) +** to a linear scan of an SQLite table with N rows. A cost of log(N) ** indicates that the expense of the operation is similar to that of a ** binary search on a unique indexed field of an SQLite table with N rows. ** ** ^The estimatedRows value is an estimate of the number of rows that ** will be returned by the strategy. ** -** The xBestIndex method may optionally populate the idxFlags field with a +** The xBestIndex method may optionally populate the idxFlags field with a ** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag - ** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite -** assumes that the strategy may visit at most one row. +** assumes that the strategy may visit at most one row. ** ** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then ** SQLite also assumes that if a call to the xUpdate() method is made as @@ -6248,14 +7309,14 @@ struct sqlite3_module { ** the xUpdate method are automatically rolled back by SQLite. ** ** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info -** structure for SQLite [version 3.8.2] ([dateof:3.8.2]). +** structure for SQLite [version 3.8.2] ([dateof:3.8.2]). ** If a virtual table extension is -** used with an SQLite version earlier than 3.8.2, the results of attempting -** to read or write the estimatedRows field are undefined (but are likely -** to included crashing the application). The estimatedRows field should +** used with an SQLite version earlier than 3.8.2, the results of attempting +** to read or write the estimatedRows field are undefined (but are likely +** to include crashing the application). The estimatedRows field should ** therefore only be used if [sqlite3_libversion_number()] returns a ** value greater than or equal to 3008002. Similarly, the idxFlags field -** was added for [version 3.9.0] ([dateof:3.9.0]). +** was added for [version 3.9.0] ([dateof:3.9.0]). ** It may therefore only be used if ** sqlite3_libversion_number() returns a value greater than or equal to ** 3009000. @@ -6295,7 +7356,7 @@ struct sqlite3_index_info { /* ** CAPI3REF: Virtual Table Scan Flags ** -** Virtual table implementations are allowed to set the +** Virtual table implementations are allowed to set the ** [sqlite3_index_info].idxFlags field to some combination of ** these bits. */ @@ -6304,25 +7365,58 @@ struct sqlite3_index_info { /* ** CAPI3REF: Virtual Table Constraint Operator Codes ** -** These macros defined the allowed values for the +** These macros define the allowed values for the ** [sqlite3_index_info].aConstraint[].op field. Each value represents -** an operator that is part of a constraint term in the wHERE clause of +** an operator that is part of a constraint term in the WHERE clause of ** a query that uses a [virtual table]. +** +** ^The left-hand operand of the operator is given by the corresponding +** aConstraint[].iColumn field. ^An iColumn of -1 indicates the left-hand +** operand is the rowid. +** The SQLITE_INDEX_CONSTRAINT_LIMIT and SQLITE_INDEX_CONSTRAINT_OFFSET +** operators have no left-hand operand, and so for those operators the +** corresponding aConstraint[].iColumn is meaningless and should not be +** used. +** +** All operator values from SQLITE_INDEX_CONSTRAINT_FUNCTION through +** value 255 are reserved to represent functions that are overloaded +** by the [xFindFunction|xFindFunction method] of the virtual table +** implementation. +** +** The right-hand operands for each constraint might be accessible using +** the [sqlite3_vtab_rhs_value()] interface. Usually the right-hand +** operand is only available if it appears as a single constant literal +** in the input SQL. If the right-hand operand is another column or an +** expression (even a constant expression) or a parameter, then the +** sqlite3_vtab_rhs_value() probably will not be able to extract it. +** ^The SQLITE_INDEX_CONSTRAINT_ISNULL and +** SQLITE_INDEX_CONSTRAINT_ISNOTNULL operators have no right-hand operand +** and hence calls to sqlite3_vtab_rhs_value() for those operators will +** always return SQLITE_NOTFOUND. +** +** The collating sequence to be used for comparison can be found using +** the [sqlite3_vtab_collation()] interface. For most real-world virtual +** tables, the collating sequence of constraints does not matter (for example +** because the constraints are numeric) and so the sqlite3_vtab_collation() +** interface is not commonly needed. */ -#define SQLITE_INDEX_CONSTRAINT_EQ 2 -#define SQLITE_INDEX_CONSTRAINT_GT 4 -#define SQLITE_INDEX_CONSTRAINT_LE 8 -#define SQLITE_INDEX_CONSTRAINT_LT 16 -#define SQLITE_INDEX_CONSTRAINT_GE 32 -#define SQLITE_INDEX_CONSTRAINT_MATCH 64 -#define SQLITE_INDEX_CONSTRAINT_LIKE 65 -#define SQLITE_INDEX_CONSTRAINT_GLOB 66 -#define SQLITE_INDEX_CONSTRAINT_REGEXP 67 -#define SQLITE_INDEX_CONSTRAINT_NE 68 -#define SQLITE_INDEX_CONSTRAINT_ISNOT 69 -#define SQLITE_INDEX_CONSTRAINT_ISNOTNULL 70 -#define SQLITE_INDEX_CONSTRAINT_ISNULL 71 -#define SQLITE_INDEX_CONSTRAINT_IS 72 +#define SQLITE_INDEX_CONSTRAINT_EQ 2 +#define SQLITE_INDEX_CONSTRAINT_GT 4 +#define SQLITE_INDEX_CONSTRAINT_LE 8 +#define SQLITE_INDEX_CONSTRAINT_LT 16 +#define SQLITE_INDEX_CONSTRAINT_GE 32 +#define SQLITE_INDEX_CONSTRAINT_MATCH 64 +#define SQLITE_INDEX_CONSTRAINT_LIKE 65 +#define SQLITE_INDEX_CONSTRAINT_GLOB 66 +#define SQLITE_INDEX_CONSTRAINT_REGEXP 67 +#define SQLITE_INDEX_CONSTRAINT_NE 68 +#define SQLITE_INDEX_CONSTRAINT_ISNOT 69 +#define SQLITE_INDEX_CONSTRAINT_ISNOTNULL 70 +#define SQLITE_INDEX_CONSTRAINT_ISNULL 71 +#define SQLITE_INDEX_CONSTRAINT_IS 72 +#define SQLITE_INDEX_CONSTRAINT_LIMIT 73 +#define SQLITE_INDEX_CONSTRAINT_OFFSET 74 +#define SQLITE_INDEX_CONSTRAINT_FUNCTION 150 /* ** CAPI3REF: Register A Virtual Table Implementation @@ -6334,7 +7428,7 @@ struct sqlite3_index_info { ** preexisting [virtual table] for the module. ** ** ^The module name is registered on the [database connection] specified -** by the first parameter. ^The name of the module is given by the +** by the first parameter. ^The name of the module is given by the ** second parameter. ^The third parameter is a pointer to ** the implementation of the [virtual table module]. ^The fourth ** parameter is an arbitrary client data pointer that is passed through @@ -6349,6 +7443,12 @@ struct sqlite3_index_info { ** ^The sqlite3_create_module() ** interface is equivalent to sqlite3_create_module_v2() with a NULL ** destructor. +** +** ^If the third parameter (the pointer to the sqlite3_module object) is +** NULL then no new module is created and any existing modules with the +** same name are dropped. +** +** See also: [sqlite3_drop_modules()] */ SQLITE_API int sqlite3_create_module( sqlite3 *db, /* SQLite connection to register module with */ @@ -6364,6 +7464,23 @@ SQLITE_API int sqlite3_create_module_v2( void(*xDestroy)(void*) /* Module destructor function */ ); +/* +** CAPI3REF: Remove Unnecessary Virtual Table Implementations +** METHOD: sqlite3 +** +** ^The sqlite3_drop_modules(D,L) interface removes all virtual +** table modules from database connection D except those named on list L. +** The L parameter must be either NULL or a pointer to an array of pointers +** to strings where the array is terminated by a single NULL pointer. +** ^If the L parameter is NULL, then all virtual table modules are removed. +** +** See also: [sqlite3_create_module()] +*/ +SQLITE_API int sqlite3_drop_modules( + sqlite3 *db, /* Remove modules from this connection */ + const char **azKeep /* Except, do not remove the ones named here */ +); + /* ** CAPI3REF: Virtual Table Instance Object ** KEYWORDS: sqlite3_vtab @@ -6426,7 +7543,7 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL); ** METHOD: sqlite3 ** ** ^(Virtual tables can provide alternative implementations of functions -** using the [xFindFunction] method of the [virtual table module]. +** using the [xFindFunction] method of the [virtual table module]. ** But global versions of those functions ** must exist in order to be overloaded.)^ ** @@ -6440,16 +7557,6 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL); */ SQLITE_API int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg); -/* -** The interface to the virtual-table mechanism defined above (back up -** to a comment remarkably similar to this one) is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - /* ** CAPI3REF: A Handle To An Open BLOB ** KEYWORDS: {BLOB handle} {BLOB handles} @@ -6477,7 +7584,7 @@ typedef struct sqlite3_blob sqlite3_blob; ** SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow; ** )^ ** -** ^(Parameter zDb is not the filename that contains the database, but +** ^(Parameter zDb is not the filename that contains the database, but ** rather the symbolic name of the database. For attached databases, this is ** the name that appears after the AS keyword in the [ATTACH] statement. ** For the main database file, the database name is "main". For TEMP @@ -6490,28 +7597,28 @@ typedef struct sqlite3_blob sqlite3_blob; ** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored ** in *ppBlob. Otherwise an [error code] is returned and, unless the error ** code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided -** the API is not misused, it is always safe to call [sqlite3_blob_close()] +** the API is not misused, it is always safe to call [sqlite3_blob_close()] ** on *ppBlob after this function it returns. ** ** This function fails with SQLITE_ERROR if any of the following are true: ** ** -** ^Unless it returns SQLITE_MISUSE, this function sets the -** [database connection] error code and message accessible via -** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. +** ^Unless it returns SQLITE_MISUSE, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. ** ** A BLOB referenced by sqlite3_blob_open() may be read using the ** [sqlite3_blob_read()] interface and modified by using @@ -6537,7 +7644,7 @@ typedef struct sqlite3_blob sqlite3_blob; ** blob. ** ** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces -** and the built-in [zeroblob] SQL function may be used to create a +** and the built-in [zeroblob] SQL function may be used to create a ** zero-filled blob to read or write using the incremental-blob interface. ** ** To avoid a resource leak, every open [BLOB handle] should eventually @@ -6587,7 +7694,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); ** DESTRUCTOR: sqlite3_blob ** ** ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed -** unconditionally. Even if this routine returns an error code, the +** unconditionally. Even if this routine returns an error code, the ** handle is still closed.)^ ** ** ^If the blob handle being closed was opened for read-write access, and if @@ -6597,10 +7704,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); ** code is returned and the transaction rolled back. ** ** Calling this function with an argument that is not a NULL pointer or an -** open blob handle results in undefined behaviour. ^Calling this routine -** with a null pointer (such as would be returned by a failed call to +** open blob handle results in undefined behaviour. ^Calling this routine +** with a null pointer (such as would be returned by a failed call to ** [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function -** is passed a valid open blob handle, the values returned by the +** is passed a valid open blob handle, the values returned by the ** sqlite3_errcode() and sqlite3_errmsg() functions are set before returning. */ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); @@ -6609,7 +7716,7 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); ** CAPI3REF: Return The Size Of An Open BLOB ** METHOD: sqlite3_blob ** -** ^Returns the size in bytes of the BLOB accessible via the +** ^Returns the size in bytes of the BLOB accessible via the ** successfully opened [BLOB handle] in its only argument. ^The ** incremental blob I/O routines can only read or overwriting existing ** blob content; they cannot change the size of a blob. @@ -6660,9 +7767,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); ** ** ^(On success, sqlite3_blob_write() returns SQLITE_OK. ** Otherwise, an [error code] or an [extended error code] is returned.)^ -** ^Unless SQLITE_MISUSE is returned, this function sets the -** [database connection] error code and message accessible via -** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. +** ^Unless SQLITE_MISUSE is returned, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. ** ** ^If the [BLOB handle] passed as the first argument was not opened for ** writing (the flags parameter to [sqlite3_blob_open()] was zero), @@ -6671,9 +7778,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); ** This function may only modify the contents of the BLOB; it is ** not possible to increase the size of a BLOB using this API. ** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is written. The size of the -** BLOB (and hence the maximum value of N+iOffset) can be determined -** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less +** [SQLITE_ERROR] is returned and no data is written. The size of the +** BLOB (and hence the maximum value of N+iOffset) can be determined +** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less ** than zero [SQLITE_ERROR] is returned and no data is written. ** ** ^An attempt to write to an expired [BLOB handle] fails with an @@ -6767,7 +7874,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); **
    @@ -7387,12 +8515,12 @@ SQLITE_API int sqlite3_status64( ** CAPI3REF: Database Connection Status ** METHOD: sqlite3 ** -** ^This interface is used to retrieve runtime status information +** ^This interface is used to retrieve runtime status information ** about a single [database connection]. ^The first argument is the ** database connection object to be interrogated. ^The second argument ** is an integer constant, taken from the set of ** [SQLITE_DBSTATUS options], that -** determines the parameter to interrogate. The set of +** determines the parameter to interrogate. The set of ** [SQLITE_DBSTATUS options] is likely ** to grow in future releases of SQLite. ** @@ -7427,7 +8555,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** checked out.)^ ** ** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(
    SQLITE_DBSTATUS_LOOKASIDE_HIT
    -**
    This parameter returns the number malloc attempts that were +**
    This parameter returns the number of malloc attempts that were ** satisfied using lookaside memory. Only the high-water value is meaningful; ** the current value is always zero.)^ ** @@ -7452,7 +8580,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** memory used by all pager caches associated with the database connection.)^ ** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0. ** -** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]] +** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]] ** ^(
    SQLITE_DBSTATUS_CACHE_USED_SHARED
    **
    This parameter is similar to DBSTATUS_CACHE_USED, except that if a ** pager cache is shared between two or more connections the bytes of heap @@ -7467,7 +8595,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
    SQLITE_DBSTATUS_SCHEMA_USED
    **
    This parameter returns the approximate number of bytes of heap ** memory used to store the schema for all databases associated -** with the connection - main, temp, and any [ATTACH]-ed databases.)^ +** with the connection - main, temp, and any [ATTACH]-ed databases.)^ ** ^The full amount of memory used by the schemas is reported, even if the ** schema memory is shared with other database connections due to ** [shared cache mode] being enabled. @@ -7482,13 +8610,13 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** ** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(
    SQLITE_DBSTATUS_CACHE_HIT
    **
    This parameter returns the number of pager cache hits that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT +** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT ** is always 0. **
    ** ** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(
    SQLITE_DBSTATUS_CACHE_MISS
    **
    This parameter returns the number of pager cache misses that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS +** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS ** is always 0. **
    ** @@ -7509,7 +8637,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** cache overflowing. Transactions are more efficient if they are written ** to disk all at once. When pages spill mid-transaction, that introduces ** additional overhead. This parameter can be used help identify -** inefficiencies that can be resolve by increasing the cache size. +** inefficiencies that can be resolved by increasing the cache size. ** ** ** [[SQLITE_DBSTATUS_DEFERRED_FKS]] ^(
    SQLITE_DBSTATUS_DEFERRED_FKS
    @@ -7546,7 +8674,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** statements. For example, if the number of table steps greatly exceeds ** the number of table searches or result rows, that would tend to indicate ** that the prepared statement is using a full table scan rather than -** an index. +** an index. ** ** ^(This interface is used to retrieve and reset counter values from ** a [prepared statement]. The first argument is the prepared statement @@ -7573,7 +8701,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]]
    SQLITE_STMTSTATUS_FULLSCAN_STEP
    **
    ^This is the number of times that SQLite has stepped forward in ** a table as part of a full table scan. Large numbers for this counter -** may indicate opportunities for performance improvement through +** may indicate opportunities for performance improvement through ** careful use of indices.
    ** ** [[SQLITE_STMTSTATUS_SORT]]
    SQLITE_STMTSTATUS_SORT
    @@ -7591,14 +8719,14 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** [[SQLITE_STMTSTATUS_VM_STEP]]
    SQLITE_STMTSTATUS_VM_STEP
    **
    ^This is the number of virtual machine operations executed ** by the prepared statement if that number is less than or equal -** to 2147483647. The number of virtual machine operations can be +** to 2147483647. The number of virtual machine operations can be ** used as a proxy for the total work done by the prepared statement. ** If the number of virtual machine operations exceeds 2147483647 ** then the value returned by this statement status code is undefined. ** ** [[SQLITE_STMTSTATUS_REPREPARE]]
    SQLITE_STMTSTATUS_REPREPARE
    **
    ^This is the number of times that the prepare statement has been -** automatically regenerated due to schema changes or change to +** automatically regenerated due to schema changes or changes to ** [bound parameters] that might affect the query plan. ** ** [[SQLITE_STMTSTATUS_RUN]]
    SQLITE_STMTSTATUS_RUN
    @@ -7608,6 +8736,16 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** The counter is incremented on the first [sqlite3_step()] call of each ** cycle. ** +** [[SQLITE_STMTSTATUS_FILTER_MISS]] +** [[SQLITE_STMTSTATUS_FILTER HIT]] +**
    SQLITE_STMTSTATUS_FILTER_HIT
    +** SQLITE_STMTSTATUS_FILTER_MISS
    +**
    ^SQLITE_STMTSTATUS_FILTER_HIT is the number of times that a join +** step was bypassed because a Bloom filter returned not-found. The +** corresponding SQLITE_STMTSTATUS_FILTER_MISS value is the number of +** times that the Bloom filter returned a find, and thus the join step +** had to be processed as normal. +** ** [[SQLITE_STMTSTATUS_MEMUSED]]
    SQLITE_STMTSTATUS_MEMUSED
    **
    ^This is the approximate number of bytes of heap memory ** used to store the prepared statement. ^This value is not actually @@ -7622,6 +8760,8 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); #define SQLITE_STMTSTATUS_VM_STEP 4 #define SQLITE_STMTSTATUS_REPREPARE 5 #define SQLITE_STMTSTATUS_RUN 6 +#define SQLITE_STMTSTATUS_FILTER_MISS 7 +#define SQLITE_STMTSTATUS_FILTER_HIT 8 #define SQLITE_STMTSTATUS_MEMUSED 99 /* @@ -7658,15 +8798,15 @@ struct sqlite3_pcache_page { ** KEYWORDS: {page cache} ** ** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can -** register an alternative page cache implementation by passing in an +** register an alternative page cache implementation by passing in an ** instance of the sqlite3_pcache_methods2 structure.)^ -** In many applications, most of the heap memory allocated by +** In many applications, most of the heap memory allocated by ** SQLite is used for the page cache. -** By implementing a +** By implementing a ** custom page cache using this API, an application can better control -** the amount of memory consumed by SQLite, the way in which -** that memory is allocated and released, and the policies used to -** determine exactly which parts of a database file are cached and for +** the amount of memory consumed by SQLite, the way in which +** that memory is allocated and released, and the policies used to +** determine exactly which parts of a database file are cached and for ** how long. ** ** The alternative page cache mechanism is an @@ -7679,19 +8819,19 @@ struct sqlite3_pcache_page { ** [sqlite3_config()] returns.)^ ** ** [[the xInit() page cache method]] -** ^(The xInit() method is called once for each effective +** ^(The xInit() method is called once for each effective ** call to [sqlite3_initialize()])^ ** (usually only once during the lifetime of the process). ^(The xInit() ** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^ -** The intent of the xInit() method is to set up global data structures -** required by the custom page cache implementation. -** ^(If the xInit() method is NULL, then the +** The intent of the xInit() method is to set up global data structures +** required by the custom page cache implementation. +** ^(If the xInit() method is NULL, then the ** built-in default page cache is used instead of the application defined ** page cache.)^ ** ** [[the xShutdown() page cache method]] ** ^The xShutdown() method is called by [sqlite3_shutdown()]. -** It can be used to clean up +** It can be used to clean up ** any outstanding resources before process shutdown, if required. ** ^The xShutdown() method may be NULL. ** @@ -7710,7 +8850,7 @@ struct sqlite3_pcache_page { ** though this is not guaranteed. ^The ** first parameter, szPage, is the size in bytes of the pages that must ** be allocated by the cache. ^szPage will always a power of two. ^The -** second parameter szExtra is a number of bytes of extra storage +** second parameter szExtra is a number of bytes of extra storage ** associated with each page cache entry. ^The szExtra parameter will ** a number less than 250. SQLite will use the ** extra szExtra bytes on each page to store metadata about the underlying @@ -7723,7 +8863,7 @@ struct sqlite3_pcache_page { ** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will ** never invoke xUnpin() except to deliberately delete a page. ** ^In other words, calls to xUnpin() on a cache with bPurgeable set to -** false will always have the "discard" flag set to true. +** false will always have the "discard" flag set to true. ** ^Hence, a cache created with bPurgeable false will ** never contain any unpinned pages. ** @@ -7738,12 +8878,12 @@ struct sqlite3_pcache_page { ** [[the xPagecount() page cache methods]] ** The xPagecount() method must return the number of pages currently ** stored in the cache, both pinned and unpinned. -** +** ** [[the xFetch() page cache methods]] -** The xFetch() method locates a page in the cache and returns a pointer to +** The xFetch() method locates a page in the cache and returns a pointer to ** an sqlite3_pcache_page object associated with that page, or a NULL pointer. ** The pBuf element of the returned sqlite3_pcache_page object will be a -** pointer to a buffer of szPage bytes used to store the content of a +** pointer to a buffer of szPage bytes used to store the content of a ** single database page. The pExtra element of sqlite3_pcache_page will be ** a pointer to the szExtra bytes of extra storage that SQLite has requested ** for each entry in the page cache. @@ -7769,7 +8909,7 @@ struct sqlite3_pcache_page { ** ** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1. SQLite ** will only use a createFlag of 2 after a prior call with a createFlag of 1 -** failed.)^ In between the to xFetch() calls, SQLite may +** failed.)^ In between the xFetch() calls, SQLite may ** attempt to unpin one or more cache pages by spilling the content of ** pinned pages to disk and synching the operating system disk cache. ** @@ -7782,8 +8922,8 @@ struct sqlite3_pcache_page { ** page cache implementation. ^The page cache implementation ** may choose to evict unpinned pages at any time. ** -** The cache must not perform any reference counting. A single -** call to xUnpin() unpins the page regardless of the number of prior calls +** The cache must not perform any reference counting. A single +** call to xUnpin() unpins the page regardless of the number of prior calls ** to xFetch(). ** ** [[the xRekey() page cache methods]] @@ -7823,7 +8963,7 @@ struct sqlite3_pcache_methods2 { int (*xPagecount)(sqlite3_pcache*); sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag); void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard); - void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*, + void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*, unsigned oldKey, unsigned newKey); void (*xTruncate)(sqlite3_pcache*, unsigned iLimit); void (*xDestroy)(sqlite3_pcache*); @@ -7868,7 +9008,7 @@ typedef struct sqlite3_backup sqlite3_backup; ** ** The backup API copies the content of one database into another. ** It is useful either for creating backups of databases or -** for copying in-memory databases to or from persistent files. +** for copying in-memory databases to or from persistent files. ** ** See Also: [Using the SQLite Online Backup API] ** @@ -7879,36 +9019,36 @@ typedef struct sqlite3_backup sqlite3_backup; ** ^Thus, the backup may be performed on a live source database without ** preventing other database connections from ** reading or writing to the source database while the backup is underway. -** -** ^(To perform a backup operation: +** +** ^(To perform a backup operation: **
      **
    1. sqlite3_backup_init() is called once to initialize the -** backup, -**
    2. sqlite3_backup_step() is called one or more times to transfer +** backup, +**
    3. sqlite3_backup_step() is called one or more times to transfer ** the data between the two databases, and finally -**
    4. sqlite3_backup_finish() is called to release all resources -** associated with the backup operation. +**
    5. sqlite3_backup_finish() is called to release all resources +** associated with the backup operation. **
    )^ ** There should be exactly one call to sqlite3_backup_finish() for each ** successful call to sqlite3_backup_init(). ** ** [[sqlite3_backup_init()]] sqlite3_backup_init() ** -** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the -** [database connection] associated with the destination database +** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the +** [database connection] associated with the destination database ** and the database name, respectively. ** ^The database name is "main" for the main database, "temp" for the ** temporary database, or the name specified after the AS keyword in ** an [ATTACH] statement for an attached database. -** ^The S and M arguments passed to +** ^The S and M arguments passed to ** sqlite3_backup_init(D,N,S,M) identify the [database connection] ** and database name of the source database, respectively. ** ^The source and destination [database connections] (parameters S and D) ** must be different or else sqlite3_backup_init(D,N,S,M) will fail with ** an error. ** -** ^A call to sqlite3_backup_init() will fail, returning NULL, if -** there is already a read or read-write transaction open on the +** ^A call to sqlite3_backup_init() will fail, returning NULL, if +** there is already a read or read-write transaction open on the ** destination database. ** ** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is @@ -7920,14 +9060,14 @@ typedef struct sqlite3_backup sqlite3_backup; ** ^A successful call to sqlite3_backup_init() returns a pointer to an ** [sqlite3_backup] object. ** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and -** sqlite3_backup_finish() functions to perform the specified backup +** sqlite3_backup_finish() functions to perform the specified backup ** operation. ** ** [[sqlite3_backup_step()]] sqlite3_backup_step() ** -** ^Function sqlite3_backup_step(B,N) will copy up to N pages between +** ^Function sqlite3_backup_step(B,N) will copy up to N pages between ** the source and destination databases specified by [sqlite3_backup] object B. -** ^If N is negative, all remaining source pages are copied. +** ^If N is negative, all remaining source pages are copied. ** ^If sqlite3_backup_step(B,N) successfully copies N pages and there ** are still more pages to be copied, then the function returns [SQLITE_OK]. ** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages @@ -7949,8 +9089,8 @@ typedef struct sqlite3_backup sqlite3_backup; ** ** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then ** the [sqlite3_busy_handler | busy-handler function] -** is invoked (if one is specified). ^If the -** busy-handler returns non-zero before the lock is available, then +** is invoked (if one is specified). ^If the +** busy-handler returns non-zero before the lock is available, then ** [SQLITE_BUSY] is returned to the caller. ^In this case the call to ** sqlite3_backup_step() can be retried later. ^If the source ** [database connection] @@ -7958,15 +9098,15 @@ typedef struct sqlite3_backup sqlite3_backup; ** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this ** case the call to sqlite3_backup_step() can be retried later on. ^(If ** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or -** [SQLITE_READONLY] is returned, then -** there is no point in retrying the call to sqlite3_backup_step(). These -** errors are considered fatal.)^ The application must accept -** that the backup operation has failed and pass the backup operation handle +** [SQLITE_READONLY] is returned, then +** there is no point in retrying the call to sqlite3_backup_step(). These +** errors are considered fatal.)^ The application must accept +** that the backup operation has failed and pass the backup operation handle ** to the sqlite3_backup_finish() to release associated resources. ** ** ^The first call to sqlite3_backup_step() obtains an exclusive lock -** on the destination file. ^The exclusive lock is not released until either -** sqlite3_backup_finish() is called or the backup operation is complete +** on the destination file. ^The exclusive lock is not released until either +** sqlite3_backup_finish() is called or the backup operation is complete ** and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to ** sqlite3_backup_step() obtains a [shared lock] on the source database that ** lasts for the duration of the sqlite3_backup_step() call. @@ -7975,18 +9115,18 @@ typedef struct sqlite3_backup sqlite3_backup; ** through the backup process. ^If the source database is modified by an ** external process or via a database connection other than the one being ** used by the backup operation, then the backup will be automatically -** restarted by the next call to sqlite3_backup_step(). ^If the source +** restarted by the next call to sqlite3_backup_step(). ^If the source ** database is modified by the using the same database connection as is used ** by the backup operation, then the backup database is automatically ** updated at the same time. ** ** [[sqlite3_backup_finish()]] sqlite3_backup_finish() ** -** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the +** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the ** application wishes to abandon the backup operation, the application ** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish(). ** ^The sqlite3_backup_finish() interfaces releases all -** resources associated with the [sqlite3_backup] object. +** resources associated with the [sqlite3_backup] object. ** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any ** active write-transaction on the destination database is rolled back. ** The [sqlite3_backup] object is invalid @@ -8026,23 +9166,23 @@ typedef struct sqlite3_backup sqlite3_backup; ** connections, then the source database connection may be used concurrently ** from within other threads. ** -** However, the application must guarantee that the destination -** [database connection] is not passed to any other API (by any thread) after +** However, the application must guarantee that the destination +** [database connection] is not passed to any other API (by any thread) after ** sqlite3_backup_init() is called and before the corresponding call to ** sqlite3_backup_finish(). SQLite does not currently check to see ** if the application incorrectly accesses the destination [database connection] ** and so no error code is reported, but the operations may malfunction ** nevertheless. Use of the destination database connection while a -** backup is in progress might also also cause a mutex deadlock. +** backup is in progress might also cause a mutex deadlock. ** ** If running in [shared cache mode], the application must ** guarantee that the shared cache used by the destination database ** is not accessed while the backup is running. In practice this means -** that the application must guarantee that the disk file being +** that the application must guarantee that the disk file being ** backed up to is not accessed by any connection within the process, ** not just the specific connection that was passed to sqlite3_backup_init(). ** -** The [sqlite3_backup] object itself is partially threadsafe. Multiple +** The [sqlite3_backup] object itself is partially threadsafe. Multiple ** threads may safely make multiple concurrent calls to sqlite3_backup_step(). ** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount() ** APIs are not strictly speaking threadsafe. If they are invoked at the @@ -8067,8 +9207,8 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ^When running in shared-cache mode, a database operation may fail with ** an [SQLITE_LOCKED] error if the required locks on the shared-cache or ** individual tables within the shared-cache cannot be obtained. See -** [SQLite Shared-Cache Mode] for a description of shared-cache locking. -** ^This API may be used to register a callback that SQLite will invoke +** [SQLite Shared-Cache Mode] for a description of shared-cache locking. +** ^This API may be used to register a callback that SQLite will invoke ** when the connection currently holding the required lock relinquishes it. ** ^This API is only available if the library was compiled with the ** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined. @@ -8076,18 +9216,18 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** See Also: [Using the SQLite Unlock Notification Feature]. ** ** ^Shared-cache locks are released when a database connection concludes -** its current transaction, either by committing it or rolling it back. +** its current transaction, either by committing it or rolling it back. ** ** ^When a connection (known as the blocked connection) fails to obtain a ** shared-cache lock and SQLITE_LOCKED is returned to the caller, the ** identity of the database connection (the blocking connection) that -** has locked the required resource is stored internally. ^After an +** has locked the required resource is stored internally. ^After an ** application receives an SQLITE_LOCKED error, it may call the -** sqlite3_unlock_notify() method with the blocked connection handle as +** sqlite3_unlock_notify() method with the blocked connection handle as ** the first argument to register for a callback that will be invoked ** when the blocking connections current transaction is concluded. ^The ** callback is invoked from within the [sqlite3_step] or [sqlite3_close] -** call that concludes the blocking connections transaction. +** call that concludes the blocking connection's transaction. ** ** ^(If sqlite3_unlock_notify() is called in a multi-threaded application, ** there is a chance that the blocking connection will have already @@ -8097,16 +9237,16 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** ^If the blocked connection is attempting to obtain a write-lock on a ** shared-cache table, and more than one other connection currently holds -** a read-lock on the same table, then SQLite arbitrarily selects one of +** a read-lock on the same table, then SQLite arbitrarily selects one of ** the other connections to use as the blocking connection. ** -** ^(There may be at most one unlock-notify callback registered by a +** ^(There may be at most one unlock-notify callback registered by a ** blocked connection. If sqlite3_unlock_notify() is called when the ** blocked connection already has a registered unlock-notify callback, ** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is ** called with a NULL pointer as its second argument, then any existing -** unlock-notify callback is canceled. ^The blocked connections -** unlock-notify callback may also be canceled by closing the blocked +** unlock-notify callback is cancelled. ^The blocked connections +** unlock-notify callback may also be cancelled by closing the blocked ** connection using [sqlite3_close()]. ** ** The unlock-notify callback is not reentrant. If an application invokes @@ -8118,25 +9258,25 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** Callback Invocation Details ** -** When an unlock-notify callback is registered, the application provides a +** When an unlock-notify callback is registered, the application provides a ** single void* pointer that is passed to the callback when it is invoked. ** However, the signature of the callback function allows SQLite to pass ** it an array of void* context pointers. The first argument passed to ** an unlock-notify callback is a pointer to an array of void* pointers, ** and the second is the number of entries in the array. ** -** When a blocking connections transaction is concluded, there may be +** When a blocking connection's transaction is concluded, there may be ** more than one blocked connection that has registered for an unlock-notify ** callback. ^If two or more such blocked connections have specified the ** same callback function, then instead of invoking the callback function ** multiple times, it is invoked once with the set of void* context pointers ** specified by the blocked connections bundled together into an array. -** This gives the application an opportunity to prioritize any actions +** This gives the application an opportunity to prioritize any actions ** related to the set of unblocked database connections. ** ** Deadlock Detection ** -** Assuming that after registering for an unlock-notify callback a +** Assuming that after registering for an unlock-notify callback a ** database waits for the callback to be issued before taking any further ** action (a reasonable assumption), then using this API may cause the ** application to deadlock. For example, if connection X is waiting for @@ -8159,7 +9299,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** The "DROP TABLE" Exception ** -** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost +** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost ** always appropriate to call sqlite3_unlock_notify(). There is however, ** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement, ** SQLite checks if there are any currently executing SELECT statements @@ -8172,7 +9312,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** One way around this problem is to check the extended error code returned ** by an sqlite3_step() call. ^(If there is a blocking connection, then the ** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in -** the special "DROP TABLE/INDEX" case, the extended error code is just +** the special "DROP TABLE/INDEX" case, the extended error code is just ** SQLITE_LOCKED.)^ */ SQLITE_API int sqlite3_unlock_notify( @@ -8263,8 +9403,8 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); ** ^The [sqlite3_wal_hook()] function is used to register a callback that ** is invoked each time data is committed to a database in wal mode. ** -** ^(The callback is invoked by SQLite after the commit has taken place and -** the associated write-lock on the database released)^, so the implementation +** ^(The callback is invoked by SQLite after the commit has taken place and +** the associated write-lock on the database released)^, so the implementation ** may read, write or [checkpoint] the database as required. ** ** ^The first parameter passed to the callback function when it is invoked @@ -8283,15 +9423,16 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); ** that does not correspond to any valid SQLite error code, the results ** are undefined. ** -** A single database handle may have at most a single write-ahead log callback +** A single database handle may have at most a single write-ahead log callback ** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any -** previously registered write-ahead log callback. ^Note that the -** [sqlite3_wal_autocheckpoint()] interface and the +** previously registered write-ahead log callback. ^The return value is +** a copy of the third parameter from the previous call, if any, or 0. +** ^Note that the [sqlite3_wal_autocheckpoint()] interface and the ** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will ** overwrite any prior [sqlite3_wal_hook()] settings. */ SQLITE_API void *sqlite3_wal_hook( - sqlite3*, + sqlite3*, int(*)(void *,sqlite3*,const char*,int), void* ); @@ -8304,7 +9445,7 @@ SQLITE_API void *sqlite3_wal_hook( ** [sqlite3_wal_hook()] that causes any database on [database connection] D ** to automatically [checkpoint] ** after committing a transaction if there are N or -** more frames in the [write-ahead log] file. ^Passing zero or +** more frames in the [write-ahead log] file. ^Passing zero or ** a negative value as the nFrame parameter disables automatic ** checkpoints entirely. ** @@ -8334,7 +9475,7 @@ SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N); ** ^(The sqlite3_wal_checkpoint(D,X) is equivalent to ** [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^ ** -** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the +** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the ** [write-ahead log] for database X on [database connection] D to be ** transferred into the database file and for the write-ahead log to ** be reset. See the [checkpointing] documentation for addition @@ -8360,10 +9501,10 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** **
    **
    SQLITE_CHECKPOINT_PASSIVE
    -** ^Checkpoint as many frames as possible without waiting for any database -** readers or writers to finish, then sync the database file if all frames +** ^Checkpoint as many frames as possible without waiting for any database +** readers or writers to finish, then sync the database file if all frames ** in the log were checkpointed. ^The [busy-handler callback] -** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode. +** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode. ** ^On the other hand, passive mode might leave the checkpoint unfinished ** if there are concurrent readers or writers. ** @@ -8377,9 +9518,9 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** **
    SQLITE_CHECKPOINT_RESTART
    ** ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition -** that after checkpointing the log file it blocks (calls the +** that after checkpointing the log file it blocks (calls the ** [busy-handler callback]) -** until all readers are reading from the database file only. ^This ensures +** until all readers are reading from the database file only. ^This ensures ** that the next writer will restart the log file from the beginning. ** ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new ** database writer attempts while it is pending, but does not impede readers. @@ -8401,31 +9542,31 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero. ** ** ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If -** any other process is running a checkpoint operation at the same time, the -** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a +** any other process is running a checkpoint operation at the same time, the +** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a ** busy-handler configured, it will not be invoked in this case. ** -** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the +** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the ** exclusive "writer" lock on the database file. ^If the writer lock cannot be ** obtained immediately, and a busy-handler is configured, it is invoked and ** the writer lock retried until either the busy-handler returns 0 or the lock ** is successfully obtained. ^The busy-handler is also invoked while waiting for ** database readers as described above. ^If the busy-handler returns 0 before ** the writer lock is obtained or while waiting for database readers, the -** checkpoint operation proceeds from that point in the same way as -** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible +** checkpoint operation proceeds from that point in the same way as +** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible ** without blocking any further. ^SQLITE_BUSY is returned in this case. ** ** ^If parameter zDb is NULL or points to a zero length string, then the -** specified operation is attempted on all WAL databases [attached] to +** specified operation is attempted on all WAL databases [attached] to ** [database connection] db. In this case the -** values written to output parameters *pnLog and *pnCkpt are undefined. ^If -** an SQLITE_BUSY error is encountered when processing one or more of the -** attached WAL databases, the operation is still attempted on any remaining -** attached databases and SQLITE_BUSY is returned at the end. ^If any other -** error occurs while processing an attached database, processing is abandoned -** and the error code is returned to the caller immediately. ^If no error -** (SQLITE_BUSY or otherwise) is encountered while processing the attached +** values written to output parameters *pnLog and *pnCkpt are undefined. ^If +** an SQLITE_BUSY error is encountered when processing one or more of the +** attached WAL databases, the operation is still attempted on any remaining +** attached databases and SQLITE_BUSY is returned at the end. ^If any other +** error occurs while processing an attached database, processing is abandoned +** and the error code is returned to the caller immediately. ^If no error +** (SQLITE_BUSY or otherwise) is encountered while processing the attached ** databases, SQLITE_OK is returned. ** ** ^If database zDb is the name of an attached database that is not in WAL @@ -8460,7 +9601,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( */ #define SQLITE_CHECKPOINT_PASSIVE 0 /* Do as much as possible w/o blocking */ #define SQLITE_CHECKPOINT_FULL 1 /* Wait for writers, then checkpoint */ -#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for for readers */ +#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for readers */ #define SQLITE_CHECKPOINT_TRUNCATE 3 /* Like RESTART but also truncate WAL */ /* @@ -8473,21 +9614,28 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( ** If this interface is invoked outside the context of an xConnect or ** xCreate virtual table method then the behavior is undefined. ** -** At present, there is only one option that may be configured using -** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options -** may be added in the future. +** In the call sqlite3_vtab_config(D,C,...) the D parameter is the +** [database connection] in which the virtual table is being created and +** which is passed in as the first argument to the [xConnect] or [xCreate] +** method that is invoking sqlite3_vtab_config(). The C parameter is one +** of the [virtual table configuration options]. The presence and meaning +** of parameters after C depend on which [virtual table configuration option] +** is used. */ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...); /* ** CAPI3REF: Virtual Table Configuration Options +** KEYWORDS: {virtual table configuration options} +** KEYWORDS: {virtual table configuration option} ** ** These macros define the various options to the ** [sqlite3_vtab_config()] interface that [virtual table] implementations ** can use to customize and optimize their behavior. ** **
    -**
    SQLITE_VTAB_CONSTRAINT_SUPPORT +** [[SQLITE_VTAB_CONSTRAINT_SUPPORT]] +**
    SQLITE_VTAB_CONSTRAINT_SUPPORT
    **
    Calls of the form ** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported, ** where X is an integer. If X is zero, then the [virtual table] whose @@ -8501,24 +9649,56 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...); ** If X is non-zero, then the virtual table implementation guarantees ** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before ** any modifications to internal or persistent data structures have been made. -** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite +** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite ** is able to roll back a statement or database transaction, and abandon -** or continue processing the current SQL statement as appropriate. +** or continue processing the current SQL statement as appropriate. ** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns ** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode ** had been ABORT. ** ** Virtual table implementations that are required to handle OR REPLACE -** must do so within the [xUpdate] method. If a call to the -** [sqlite3_vtab_on_conflict()] function indicates that the current ON -** CONFLICT policy is REPLACE, the virtual table implementation should +** must do so within the [xUpdate] method. If a call to the +** [sqlite3_vtab_on_conflict()] function indicates that the current ON +** CONFLICT policy is REPLACE, the virtual table implementation should ** silently replace the appropriate rows within the xUpdate callback and ** return SQLITE_OK. Or, if this is not possible, it may return -** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT +** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT ** constraint handling. +**
    +** +** [[SQLITE_VTAB_DIRECTONLY]]
    SQLITE_VTAB_DIRECTONLY
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_DIRECTONLY) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** prohibits that virtual table from being used from within triggers and +** views. +**
    +** +** [[SQLITE_VTAB_INNOCUOUS]]
    SQLITE_VTAB_INNOCUOUS
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_INNOCUOUS) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** identify that virtual table as being safe to use from within triggers +** and views. Conceptually, the SQLITE_VTAB_INNOCUOUS tag means that the +** virtual table can do no serious harm even if it is controlled by a +** malicious hacker. Developers should avoid setting the SQLITE_VTAB_INNOCUOUS +** flag unless absolutely necessary. +**
    +** +** [[SQLITE_VTAB_USES_ALL_SCHEMAS]]
    SQLITE_VTAB_USES_ALL_SCHEMAS
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_USES_ALL_SCHEMA) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** instruct the query planner to begin at least a read transaction on +** all schemas ("main", "temp", and any ATTACH-ed databases) whenever the +** virtual table is used. +**
    **
    */ #define SQLITE_VTAB_CONSTRAINT_SUPPORT 1 +#define SQLITE_VTAB_INNOCUOUS 2 +#define SQLITE_VTAB_DIRECTONLY 3 +#define SQLITE_VTAB_USES_ALL_SCHEMAS 4 /* ** CAPI3REF: Determine The Virtual Table Conflict Policy @@ -8536,10 +9716,11 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); ** CAPI3REF: Determine If Virtual Table Column Access Is For UPDATE ** ** If the sqlite3_vtab_nochange(X) routine is called within the [xColumn] -** method of a [virtual table], then it returns true if and only if the +** method of a [virtual table], then it might return true if the ** column is being fetched as part of an UPDATE operation during which the -** column value will not change. Applications might use this to substitute -** a return value that is less expensive to compute and that the corresponding +** column value will not change. The virtual table implementation can use +** this hint as permission to substitute a return value that is less +** expensive to compute and that the corresponding ** [xUpdate] method understands as a "no-change" value. ** ** If the [xColumn] method calls sqlite3_vtab_nochange() and finds that @@ -8548,23 +9729,285 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); ** any of the [sqlite3_result_int|sqlite3_result_xxxxx() interfaces]. ** In that case, [sqlite3_value_nochange(X)] will return true for the ** same column in the [xUpdate] method. +** +** The sqlite3_vtab_nochange() routine is an optimization. Virtual table +** implementations should continue to give a correct answer even if the +** sqlite3_vtab_nochange() interface were to always return false. In the +** current implementation, the sqlite3_vtab_nochange() interface does always +** returns false for the enhanced [UPDATE FROM] statement. */ SQLITE_API int sqlite3_vtab_nochange(sqlite3_context*); /* ** CAPI3REF: Determine The Collation For a Virtual Table Constraint +** METHOD: sqlite3_index_info ** ** This function may only be called from within a call to the [xBestIndex] -** method of a [virtual table]. +** method of a [virtual table]. This function returns a pointer to a string +** that is the name of the appropriate collation sequence to use for text +** comparisons on the constraint identified by its arguments. ** -** The first argument must be the sqlite3_index_info object that is the -** first parameter to the xBestIndex() method. The second argument must be -** an index into the aConstraint[] array belonging to the sqlite3_index_info -** structure passed to xBestIndex. This function returns a pointer to a buffer -** containing the name of the collation sequence for the corresponding -** constraint. +** The first argument must be the pointer to the [sqlite3_index_info] object +** that is the first parameter to the xBestIndex() method. The second argument +** must be an index into the aConstraint[] array belonging to the +** sqlite3_index_info structure passed to xBestIndex. +** +** Important: +** The first parameter must be the same pointer that is passed into the +** xBestMethod() method. The first parameter may not be a pointer to a +** different [sqlite3_index_info] object, even an exact copy. +** +** The return value is computed as follows: +** +**
      +**

    1. If the constraint comes from a WHERE clause expression that contains +** a [COLLATE operator], then the name of the collation specified by +** that COLLATE operator is returned. +**

    2. If there is no COLLATE operator, but the column that is the subject +** of the constraint specifies an alternative collating sequence via +** a [COLLATE clause] on the column definition within the CREATE TABLE +** statement that was passed into [sqlite3_declare_vtab()], then the +** name of that alternative collating sequence is returned. +**

    3. Otherwise, "BINARY" is returned. +**

    */ -SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_info*,int); +SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info*,int); + +/* +** CAPI3REF: Determine if a virtual table query is DISTINCT +** METHOD: sqlite3_index_info +** +** This API may only be used from within an [xBestIndex|xBestIndex method] +** of a [virtual table] implementation. The result of calling this +** interface from outside of xBestIndex() is undefined and probably harmful. +** +** ^The sqlite3_vtab_distinct() interface returns an integer between 0 and +** 3. The integer returned by sqlite3_vtab_distinct() +** gives the virtual table additional information about how the query +** planner wants the output to be ordered. As long as the virtual table +** can meet the ordering requirements of the query planner, it may set +** the "orderByConsumed" flag. +** +**

    1. +** ^If the sqlite3_vtab_distinct() interface returns 0, that means +** that the query planner needs the virtual table to return all rows in the +** sort order defined by the "nOrderBy" and "aOrderBy" fields of the +** [sqlite3_index_info] object. This is the default expectation. If the +** virtual table outputs all rows in sorted order, then it is always safe for +** the xBestIndex method to set the "orderByConsumed" flag, regardless of +** the return value from sqlite3_vtab_distinct(). +**

    2. +** ^(If the sqlite3_vtab_distinct() interface returns 1, that means +** that the query planner does not need the rows to be returned in sorted order +** as long as all rows with the same values in all columns identified by the +** "aOrderBy" field are adjacent.)^ This mode is used when the query planner +** is doing a GROUP BY. +**

    3. +** ^(If the sqlite3_vtab_distinct() interface returns 2, that means +** that the query planner does not need the rows returned in any particular +** order, as long as rows with the same values in all "aOrderBy" columns +** are adjacent.)^ ^(Furthermore, only a single row for each particular +** combination of values in the columns identified by the "aOrderBy" field +** needs to be returned.)^ ^It is always ok for two or more rows with the same +** values in all "aOrderBy" columns to be returned, as long as all such rows +** are adjacent. ^The virtual table may, if it chooses, omit extra rows +** that have the same value for all columns identified by "aOrderBy". +** ^However omitting the extra rows is optional. +** This mode is used for a DISTINCT query. +**

    4. +** ^(If the sqlite3_vtab_distinct() interface returns 3, that means +** that the query planner needs only distinct rows but it does need the +** rows to be sorted.)^ ^The virtual table implementation is free to omit +** rows that are identical in all aOrderBy columns, if it wants to, but +** it is not required to omit any rows. This mode is used for queries +** that have both DISTINCT and ORDER BY clauses. +**

    +** +** ^For the purposes of comparing virtual table output values to see if the +** values are same value for sorting purposes, two NULL values are considered +** to be the same. In other words, the comparison operator is "IS" +** (or "IS NOT DISTINCT FROM") and not "==". +** +** If a virtual table implementation is unable to meet the requirements +** specified above, then it must not set the "orderByConsumed" flag in the +** [sqlite3_index_info] object or an incorrect answer may result. +** +** ^A virtual table implementation is always free to return rows in any order +** it wants, as long as the "orderByConsumed" flag is not set. ^When the +** the "orderByConsumed" flag is unset, the query planner will add extra +** [bytecode] to ensure that the final results returned by the SQL query are +** ordered correctly. The use of the "orderByConsumed" flag and the +** sqlite3_vtab_distinct() interface is merely an optimization. ^Careful +** use of the sqlite3_vtab_distinct() interface and the "orderByConsumed" +** flag might help queries against a virtual table to run faster. Being +** overly aggressive and setting the "orderByConsumed" flag when it is not +** valid to do so, on the other hand, might cause SQLite to return incorrect +** results. +*/ +SQLITE_API int sqlite3_vtab_distinct(sqlite3_index_info*); + +/* +** CAPI3REF: Identify and handle IN constraints in xBestIndex +** +** This interface may only be used from within an +** [xBestIndex|xBestIndex() method] of a [virtual table] implementation. +** The result of invoking this interface from any other context is +** undefined and probably harmful. +** +** ^(A constraint on a virtual table of the form +** "[IN operator|column IN (...)]" is +** communicated to the xBestIndex method as a +** [SQLITE_INDEX_CONSTRAINT_EQ] constraint.)^ If xBestIndex wants to use +** this constraint, it must set the corresponding +** aConstraintUsage[].argvIndex to a positive integer. ^(Then, under +** the usual mode of handling IN operators, SQLite generates [bytecode] +** that invokes the [xFilter|xFilter() method] once for each value +** on the right-hand side of the IN operator.)^ Thus the virtual table +** only sees a single value from the right-hand side of the IN operator +** at a time. +** +** In some cases, however, it would be advantageous for the virtual +** table to see all values on the right-hand of the IN operator all at +** once. The sqlite3_vtab_in() interfaces facilitates this in two ways: +** +**
      +**

    1. +** ^A call to sqlite3_vtab_in(P,N,-1) will return true (non-zero) +** if and only if the [sqlite3_index_info|P->aConstraint][N] constraint +** is an [IN operator] that can be processed all at once. ^In other words, +** sqlite3_vtab_in() with -1 in the third argument is a mechanism +** by which the virtual table can ask SQLite if all-at-once processing +** of the IN operator is even possible. +** +**

    2. +** ^A call to sqlite3_vtab_in(P,N,F) with F==1 or F==0 indicates +** to SQLite that the virtual table does or does not want to process +** the IN operator all-at-once, respectively. ^Thus when the third +** parameter (F) is non-negative, this interface is the mechanism by +** which the virtual table tells SQLite how it wants to process the +** IN operator. +**

    +** +** ^The sqlite3_vtab_in(P,N,F) interface can be invoked multiple times +** within the same xBestIndex method call. ^For any given P,N pair, +** the return value from sqlite3_vtab_in(P,N,F) will always be the same +** within the same xBestIndex call. ^If the interface returns true +** (non-zero), that means that the constraint is an IN operator +** that can be processed all-at-once. ^If the constraint is not an IN +** operator or cannot be processed all-at-once, then the interface returns +** false. +** +** ^(All-at-once processing of the IN operator is selected if both of the +** following conditions are met: +** +**
      +**

    1. The P->aConstraintUsage[N].argvIndex value is set to a positive +** integer. This is how the virtual table tells SQLite that it wants to +** use the N-th constraint. +** +**

    2. The last call to sqlite3_vtab_in(P,N,F) for which F was +** non-negative had F>=1. +**

    )^ +** +** ^If either or both of the conditions above are false, then SQLite uses +** the traditional one-at-a-time processing strategy for the IN constraint. +** ^If both conditions are true, then the argvIndex-th parameter to the +** xFilter method will be an [sqlite3_value] that appears to be NULL, +** but which can be passed to [sqlite3_vtab_in_first()] and +** [sqlite3_vtab_in_next()] to find all values on the right-hand side +** of the IN constraint. +*/ +SQLITE_API int sqlite3_vtab_in(sqlite3_index_info*, int iCons, int bHandle); + +/* +** CAPI3REF: Find all elements on the right-hand side of an IN constraint. +** +** These interfaces are only useful from within the +** [xFilter|xFilter() method] of a [virtual table] implementation. +** The result of invoking these interfaces from any other context +** is undefined and probably harmful. +** +** The X parameter in a call to sqlite3_vtab_in_first(X,P) or +** sqlite3_vtab_in_next(X,P) should be one of the parameters to the +** xFilter method which invokes these routines, and specifically +** a parameter that was previously selected for all-at-once IN constraint +** processing use the [sqlite3_vtab_in()] interface in the +** [xBestIndex|xBestIndex method]. ^(If the X parameter is not +** an xFilter argument that was selected for all-at-once IN constraint +** processing, then these routines return [SQLITE_ERROR].)^ +** +** ^(Use these routines to access all values on the right-hand side +** of the IN constraint using code like the following: +** +** 
    +**    for(rc=sqlite3_vtab_in_first(pList, &pVal);
+**        rc==SQLITE_OK && pVal;
+**        rc=sqlite3_vtab_in_next(pList, &pVal)
+**    ){
+**      // do something with pVal
+**    }
+**    if( rc!=SQLITE_OK ){
+**      // an error has occurred
+**    }
+**
    )^ +** +** ^On success, the sqlite3_vtab_in_first(X,P) and sqlite3_vtab_in_next(X,P) +** routines return SQLITE_OK and set *P to point to the first or next value +** on the RHS of the IN constraint. ^If there are no more values on the +** right hand side of the IN constraint, then *P is set to NULL and these +** routines return [SQLITE_DONE]. ^The return value might be +** some other value, such as SQLITE_NOMEM, in the event of a malfunction. +** +** The *ppOut values returned by these routines are only valid until the +** next call to either of these routines or until the end of the xFilter +** method from which these routines were called. If the virtual table +** implementation needs to retain the *ppOut values for longer, it must make +** copies. The *ppOut values are [protected sqlite3_value|protected]. +*/ +SQLITE_API int sqlite3_vtab_in_first(sqlite3_value *pVal, sqlite3_value **ppOut); +SQLITE_API int sqlite3_vtab_in_next(sqlite3_value *pVal, sqlite3_value **ppOut); + +/* +** CAPI3REF: Constraint values in xBestIndex() +** METHOD: sqlite3_index_info +** +** This API may only be used from within the [xBestIndex|xBestIndex method] +** of a [virtual table] implementation. The result of calling this interface +** from outside of an xBestIndex method are undefined and probably harmful. +** +** ^When the sqlite3_vtab_rhs_value(P,J,V) interface is invoked from within +** the [xBestIndex] method of a [virtual table] implementation, with P being +** a copy of the [sqlite3_index_info] object pointer passed into xBestIndex and +** J being a 0-based index into P->aConstraint[], then this routine +** attempts to set *V to the value of the right-hand operand of +** that constraint if the right-hand operand is known. ^If the +** right-hand operand is not known, then *V is set to a NULL pointer. +** ^The sqlite3_vtab_rhs_value(P,J,V) interface returns SQLITE_OK if +** and only if *V is set to a value. ^The sqlite3_vtab_rhs_value(P,J,V) +** inteface returns SQLITE_NOTFOUND if the right-hand side of the J-th +** constraint is not available. ^The sqlite3_vtab_rhs_value() interface +** can return an result code other than SQLITE_OK or SQLITE_NOTFOUND if +** something goes wrong. +** +** The sqlite3_vtab_rhs_value() interface is usually only successful if +** the right-hand operand of a constraint is a literal value in the original +** SQL statement. If the right-hand operand is an expression or a reference +** to some other column or a [host parameter], then sqlite3_vtab_rhs_value() +** will probably return [SQLITE_NOTFOUND]. +** +** ^(Some constraints, such as [SQLITE_INDEX_CONSTRAINT_ISNULL] and +** [SQLITE_INDEX_CONSTRAINT_ISNOTNULL], have no right-hand operand. For such +** constraints, sqlite3_vtab_rhs_value() always returns SQLITE_NOTFOUND.)^ +** +** ^The [sqlite3_value] object returned in *V is a protected sqlite3_value +** and remains valid for the duration of the xBestIndex method call. +** ^When xBestIndex returns, the sqlite3_value object returned by +** sqlite3_vtab_rhs_value() is automatically deallocated. +** +** The "_rhs_" in the name of this routine is an abbreviation for +** "Right-Hand Side". +*/ +SQLITE_API int sqlite3_vtab_rhs_value(sqlite3_index_info*, int, sqlite3_value **ppVal); /* ** CAPI3REF: Conflict resolution modes @@ -8596,17 +10039,21 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** managed by the prepared statement S and will be automatically freed when ** S is finalized. ** +** Not all values are available for all query elements. When a value is +** not available, the output variable is set to -1 if the value is numeric, +** or to NULL if it is a string (SQLITE_SCANSTAT_NAME). +** **
    ** [[SQLITE_SCANSTAT_NLOOP]]
    SQLITE_SCANSTAT_NLOOP
    -**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be +**
    ^The [sqlite3_int64] variable pointed to by the V parameter will be ** set to the total number of times that the X-th loop has run.
    ** ** [[SQLITE_SCANSTAT_NVISIT]]
    SQLITE_SCANSTAT_NVISIT
    -**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be set +**
    ^The [sqlite3_int64] variable pointed to by the V parameter will be set ** to the total number of rows examined by all iterations of the X-th loop.
    ** ** [[SQLITE_SCANSTAT_EST]]
    SQLITE_SCANSTAT_EST
    -**
    ^The "double" variable pointed to by the T parameter will be set to the +**
    ^The "double" variable pointed to by the V parameter will be set to the ** query planner's estimate for the average number of rows output from each ** iteration of the X-th loop. If the query planner's estimates was accurate, ** then this value will approximate the quotient NVISIT/NLOOP and the @@ -8614,21 +10061,33 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** be the NLOOP value for the current loop. ** ** [[SQLITE_SCANSTAT_NAME]]
    SQLITE_SCANSTAT_NAME
    -**
    ^The "const char *" variable pointed to by the T parameter will be set +**
    ^The "const char *" variable pointed to by the V parameter will be set ** to a zero-terminated UTF-8 string containing the name of the index or table ** used for the X-th loop. ** ** [[SQLITE_SCANSTAT_EXPLAIN]]
    SQLITE_SCANSTAT_EXPLAIN
    -**
    ^The "const char *" variable pointed to by the T parameter will be set +**
    ^The "const char *" variable pointed to by the V parameter will be set ** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN] ** description for the X-th loop. ** -** [[SQLITE_SCANSTAT_SELECTID]]
    SQLITE_SCANSTAT_SELECT
    -**
    ^The "int" variable pointed to by the T parameter will be set to the -** "select-id" for the X-th loop. The select-id identifies which query or -** subquery the loop is part of. The main query has a select-id of zero. -** The select-id is the same value as is output in the first column -** of an [EXPLAIN QUERY PLAN] query. +** [[SQLITE_SCANSTAT_SELECTID]]
    SQLITE_SCANSTAT_SELECTID
    +**
    ^The "int" variable pointed to by the V parameter will be set to the +** id for the X-th query plan element. The id value is unique within the +** statement. The select-id is the same value as is output in the first +** column of an [EXPLAIN QUERY PLAN] query. +** +** [[SQLITE_SCANSTAT_PARENTID]]
    SQLITE_SCANSTAT_PARENTID
    +**
    The "int" variable pointed to by the V parameter will be set to the +** the id of the parent of the current query element, if applicable, or +** to zero if the query element has no parent. This is the same value as +** returned in the second column of an [EXPLAIN QUERY PLAN] query. +** +** [[SQLITE_SCANSTAT_NCYCLE]]
    SQLITE_SCANSTAT_NCYCLE
    +**
    The sqlite3_int64 output value is set to the number of cycles, +** according to the processor time-stamp counter, that elapsed while the +** query element was being processed. This value is not available for +** all query elements - if it is unavailable the output variable is +** set to -1. **
    */ #define SQLITE_SCANSTAT_NLOOP 0 @@ -8637,12 +10096,14 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ #define SQLITE_SCANSTAT_NAME 3 #define SQLITE_SCANSTAT_EXPLAIN 4 #define SQLITE_SCANSTAT_SELECTID 5 +#define SQLITE_SCANSTAT_PARENTID 6 +#define SQLITE_SCANSTAT_NCYCLE 7 /* ** CAPI3REF: Prepared Statement Scan Status ** METHOD: sqlite3_stmt ** -** This interface returns information about the predicted and measured +** These interfaces return information about the predicted and measured ** performance for pStmt. Advanced applications can use this ** interface to compare the predicted and the measured performance and ** issue warnings and/or rerun [ANALYZE] if discrepancies are found. @@ -8653,19 +10114,25 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** ** The "iScanStatusOp" parameter determines which status information to return. ** The "iScanStatusOp" must be one of the [scanstatus options] or the behavior -** of this interface is undefined. -** ^The requested measurement is written into a variable pointed to by -** the "pOut" parameter. -** Parameter "idx" identifies the specific loop to retrieve statistics for. -** Loops are numbered starting from zero. ^If idx is out of range - less than -** zero or greater than or equal to the total number of loops used to implement -** the statement - a non-zero value is returned and the variable that pOut -** points to is unchanged. +** of this interface is undefined. ^The requested measurement is written into +** a variable pointed to by the "pOut" parameter. ** -** ^Statistics might not be available for all loops in all statements. ^In cases -** where there exist loops with no available statistics, this function behaves -** as if the loop did not exist - it returns non-zero and leave the variable -** that pOut points to unchanged. +** The "flags" parameter must be passed a mask of flags. At present only +** one flag is defined - SQLITE_SCANSTAT_COMPLEX. If SQLITE_SCANSTAT_COMPLEX +** is specified, then status information is available for all elements +** of a query plan that are reported by "EXPLAIN QUERY PLAN" output. If +** SQLITE_SCANSTAT_COMPLEX is not specified, then only query plan elements +** that correspond to query loops (the "SCAN..." and "SEARCH..." elements of +** the EXPLAIN QUERY PLAN output) are available. Invoking API +** sqlite3_stmt_scanstatus() is equivalent to calling +** sqlite3_stmt_scanstatus_v2() with a zeroed flags parameter. +** +** Parameter "idx" identifies the specific query element to retrieve statistics +** for. Query elements are numbered starting from zero. A value of -1 may be +** to query for statistics regarding the entire query. ^If idx is out of range +** - less than -1 or greater than or equal to the total number of query +** elements used to implement the statement - a non-zero value is returned and +** the variable that pOut points to is unchanged. ** ** See also: [sqlite3_stmt_scanstatus_reset()] */ @@ -8674,7 +10141,20 @@ SQLITE_API int sqlite3_stmt_scanstatus( int idx, /* Index of loop to report on */ int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */ void *pOut /* Result written here */ -); +); +SQLITE_API int sqlite3_stmt_scanstatus_v2( + sqlite3_stmt *pStmt, /* Prepared statement for which info desired */ + int idx, /* Index of loop to report on */ + int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */ + int flags, /* Mask of flags defined below */ + void *pOut /* Result written here */ +); + +/* +** CAPI3REF: Prepared Statement Scan Status +** KEYWORDS: {scan status flags} +*/ +#define SQLITE_SCANSTAT_COMPLEX 0x0001 /* ** CAPI3REF: Zero Scan-Status Counters @@ -8689,18 +10169,19 @@ SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*); /* ** CAPI3REF: Flush caches to disk mid-transaction +** METHOD: sqlite3 ** ** ^If a write-transaction is open on [database connection] D when the ** [sqlite3_db_cacheflush(D)] interface invoked, any dirty -** pages in the pager-cache that are not currently in use are written out +** pages in the pager-cache that are not currently in use are written out ** to disk. A dirty page may be in use if a database cursor created by an ** active SQL statement is reading from it, or if it is page 1 of a database ** file (page 1 is always "in use"). ^The [sqlite3_db_cacheflush(D)] ** interface flushes caches for all schemas - "main", "temp", and ** any [attached] databases. ** -** ^If this function needs to obtain extra database locks before dirty pages -** can be flushed to disk, it does so. ^If those locks cannot be obtained +** ^If this function needs to obtain extra database locks before dirty pages +** can be flushed to disk, it does so. ^If those locks cannot be obtained ** immediately and there is a busy-handler callback configured, it is invoked ** in the usual manner. ^If the required lock still cannot be obtained, then ** the database is skipped and an attempt made to flush any dirty pages @@ -8721,6 +10202,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); /* ** CAPI3REF: The pre-update hook. +** METHOD: sqlite3 ** ** ^These interfaces are only available if SQLite is compiled using the ** [SQLITE_ENABLE_PREUPDATE_HOOK] compile-time option. @@ -8738,7 +10220,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** ** ^The preupdate hook only fires for changes to real database tables; the ** preupdate hook is not invoked for changes to [virtual tables] or to -** system tables like sqlite_master or sqlite_stat1. +** system tables like sqlite_sequence or sqlite_stat1. ** ** ^The second parameter to the preupdate callback is a pointer to ** the [database connection] that registered the preupdate hook. @@ -8747,21 +10229,25 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** kind of update operation that is about to occur. ** ^(The fourth parameter to the preupdate callback is the name of the ** database within the database connection that is being modified. This -** will be "main" for the main database or "temp" for TEMP tables or +** will be "main" for the main database or "temp" for TEMP tables or ** the name given after the AS keyword in the [ATTACH] statement for attached ** databases.)^ ** ^The fifth parameter to the preupdate callback is the name of the ** table that is being modified. ** ** For an UPDATE or DELETE operation on a [rowid table], the sixth -** parameter passed to the preupdate callback is the initial [rowid] of the +** parameter passed to the preupdate callback is the initial [rowid] of the ** row being modified or deleted. For an INSERT operation on a rowid table, -** or any operation on a WITHOUT ROWID table, the value of the sixth +** or any operation on a WITHOUT ROWID table, the value of the sixth ** parameter is undefined. For an INSERT or UPDATE on a rowid table the ** seventh parameter is the final rowid value of the row being inserted ** or updated. The value of the seventh parameter passed to the callback ** function is not defined for operations on WITHOUT ROWID tables, or for -** INSERT operations on rowid tables. +** DELETE operations on rowid tables. +** +** ^The sqlite3_preupdate_hook(D,C,P) function returns the P argument from +** the previous call on the same [database connection] D, or NULL for +** the first call on D. ** ** The [sqlite3_preupdate_old()], [sqlite3_preupdate_new()], ** [sqlite3_preupdate_count()], and [sqlite3_preupdate_depth()] interfaces @@ -8795,10 +10281,19 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** ** ^The [sqlite3_preupdate_depth(D)] interface returns 0 if the preupdate ** callback was invoked as a result of a direct insert, update, or delete -** operation; or 1 for inserts, updates, or deletes invoked by top-level +** operation; or 1 for inserts, updates, or deletes invoked by top-level ** triggers; or 2 for changes resulting from triggers called by top-level ** triggers; and so forth. ** +** When the [sqlite3_blob_write()] API is used to update a blob column, +** the pre-update hook is invoked with SQLITE_DELETE. This is because the +** in this case the new values are not available. In this case, when a +** callback made with op==SQLITE_DELETE is actually a write using the +** sqlite3_blob_write() API, the [sqlite3_preupdate_blobwrite()] returns +** the index of the column being written. In other cases, where the +** pre-update hook is being invoked for some other reason, including a +** regular DELETE, sqlite3_preupdate_blobwrite() returns -1. +** ** See also: [sqlite3_update_hook()] */ #if defined(SQLITE_ENABLE_PREUPDATE_HOOK) @@ -8819,24 +10314,25 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *, int, sqlite3_value **); SQLITE_API int sqlite3_preupdate_count(sqlite3 *); SQLITE_API int sqlite3_preupdate_depth(sqlite3 *); SQLITE_API int sqlite3_preupdate_new(sqlite3 *, int, sqlite3_value **); +SQLITE_API int sqlite3_preupdate_blobwrite(sqlite3 *); #endif /* ** CAPI3REF: Low-level system error code +** METHOD: sqlite3 ** ** ^Attempt to return the underlying operating system error code or error ** number that caused the most recent I/O error or failure to open a file. ** The return value is OS-dependent. For example, on unix systems, after ** [sqlite3_open_v2()] returns [SQLITE_CANTOPEN], this interface could be ** called to get back the underlying "errno" that caused the problem, such -** as ENOSPC, EAUTH, EISDIR, and so forth. +** as ENOSPC, EAUTH, EISDIR, and so forth. */ SQLITE_API int sqlite3_system_errno(sqlite3*); /* ** CAPI3REF: Database Snapshot ** KEYWORDS: {snapshot} {sqlite3_snapshot} -** EXPERIMENTAL ** ** An instance of the snapshot object records the state of a [WAL mode] ** database for some specific point in history. @@ -8853,11 +10349,6 @@ SQLITE_API int sqlite3_system_errno(sqlite3*); ** version of the database file so that it is possible to later open a new read ** transaction that sees that historical version of the database rather than ** the most recent version. -** -** The constructor for this object is [sqlite3_snapshot_get()]. The -** [sqlite3_snapshot_open()] method causes a fresh read transaction to refer -** to an historical snapshot (if possible). The destructor for -** sqlite3_snapshot objects is [sqlite3_snapshot_free()]. */ typedef struct sqlite3_snapshot { unsigned char hidden[48]; @@ -8865,7 +10356,7 @@ typedef struct sqlite3_snapshot { /* ** CAPI3REF: Record A Database Snapshot -** EXPERIMENTAL +** CONSTRUCTOR: sqlite3_snapshot ** ** ^The [sqlite3_snapshot_get(D,S,P)] interface attempts to make a ** new [sqlite3_snapshot] object that records the current state of @@ -8873,15 +10364,15 @@ typedef struct sqlite3_snapshot { ** [sqlite3_snapshot_get(D,S,P)] interface writes a pointer to the newly ** created [sqlite3_snapshot] object into *P and returns SQLITE_OK. ** If there is not already a read-transaction open on schema S when -** this function is called, one is opened automatically. +** this function is called, one is opened automatically. ** ** The following must be true for this function to succeed. If any of ** the following statements are false when sqlite3_snapshot_get() is ** called, SQLITE_ERROR is returned. The final value of *P is undefined -** in this case. +** in this case. ** **
      -**
    • The database handle must be in [autocommit mode]. +**
    • The database handle must not be in [autocommit mode]. ** **
    • Schema S of [database connection] D must be a [WAL mode] database. ** @@ -8890,13 +10381,13 @@ typedef struct sqlite3_snapshot { ** **
    • One or more transactions must have been written to the current wal ** file since it was created on disk (by any connection). This means -** that a snapshot cannot be taken on a wal mode database with no wal +** that a snapshot cannot be taken on a wal mode database with no wal ** file immediately after it is first opened. At least one transaction ** must be written to it first. **
    ** ** This function may also return SQLITE_NOMEM. If it is called with the -** database handle in autocommit mode but fails for some other reason, +** database handle in autocommit mode but fails for some other reason, ** whether or not a read transaction is opened on schema S is undefined. ** ** The [sqlite3_snapshot] object returned from a successful call to @@ -8904,7 +10395,7 @@ typedef struct sqlite3_snapshot { ** to avoid a memory leak. ** ** The [sqlite3_snapshot_get()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get( sqlite3 *db, @@ -8914,35 +10405,46 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get( /* ** CAPI3REF: Start a read transaction on an historical snapshot -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** -** ^The [sqlite3_snapshot_open(D,S,P)] interface starts a -** read transaction for schema S of -** [database connection] D such that the read transaction -** refers to historical [snapshot] P, rather than the most -** recent change to the database. -** ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK on success -** or an appropriate [error code] if it fails. +** ^The [sqlite3_snapshot_open(D,S,P)] interface either starts a new read +** transaction or upgrades an existing one for schema S of +** [database connection] D such that the read transaction refers to +** historical [snapshot] P, rather than the most recent change to the +** database. ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK +** on success or an appropriate [error code] if it fails. +** +** ^In order to succeed, the database connection must not be in +** [autocommit mode] when [sqlite3_snapshot_open(D,S,P)] is called. If there +** is already a read transaction open on schema S, then the database handle +** must have no active statements (SELECT statements that have been passed +** to sqlite3_step() but not sqlite3_reset() or sqlite3_finalize()). +** SQLITE_ERROR is returned if either of these conditions is violated, or +** if schema S does not exist, or if the snapshot object is invalid. +** +** ^A call to sqlite3_snapshot_open() will fail to open if the specified +** snapshot has been overwritten by a [checkpoint]. In this case +** SQLITE_ERROR_SNAPSHOT is returned. +** +** If there is already a read transaction open when this function is +** invoked, then the same read transaction remains open (on the same +** database snapshot) if SQLITE_ERROR, SQLITE_BUSY or SQLITE_ERROR_SNAPSHOT +** is returned. If another error code - for example SQLITE_PROTOCOL or an +** SQLITE_IOERR error code - is returned, then the final state of the +** read transaction is undefined. If SQLITE_OK is returned, then the +** read transaction is now open on database snapshot P. ** -** ^In order to succeed, a call to [sqlite3_snapshot_open(D,S,P)] must be -** the first operation following the [BEGIN] that takes the schema S -** out of [autocommit mode]. -** ^In other words, schema S must not currently be in -** a transaction for [sqlite3_snapshot_open(D,S,P)] to work, but the -** database connection D must be out of [autocommit mode]. -** ^A [snapshot] will fail to open if it has been overwritten by a -** [checkpoint]. ** ^(A call to [sqlite3_snapshot_open(D,S,P)] will fail if the ** database connection D does not know that the database file for ** schema S is in [WAL mode]. A database connection might not know ** that the database file is in [WAL mode] if there has been no prior -** I/O on that database connection, or if the database entered [WAL mode] +** I/O on that database connection, or if the database entered [WAL mode] ** after the most recent I/O on the database connection.)^ ** (Hint: Run "[PRAGMA application_id]" against a newly opened ** database connection in order to make it ready to use snapshots.) ** ** The [sqlite3_snapshot_open()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open( sqlite3 *db, @@ -8952,38 +10454,41 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open( /* ** CAPI3REF: Destroy a snapshot -** EXPERIMENTAL +** DESTRUCTOR: sqlite3_snapshot ** ** ^The [sqlite3_snapshot_free(P)] interface destroys [sqlite3_snapshot] P. ** The application must eventually free every [sqlite3_snapshot] object ** using this routine to avoid a memory leak. ** ** The [sqlite3_snapshot_free()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL void sqlite3_snapshot_free(sqlite3_snapshot*); /* ** CAPI3REF: Compare the ages of two snapshot handles. -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** ** The sqlite3_snapshot_cmp(P1, P2) interface is used to compare the ages -** of two valid snapshot handles. +** of two valid snapshot handles. ** -** If the two snapshot handles are not associated with the same database -** file, the result of the comparison is undefined. +** If the two snapshot handles are not associated with the same database +** file, the result of the comparison is undefined. ** ** Additionally, the result of the comparison is only valid if both of the ** snapshot handles were obtained by calling sqlite3_snapshot_get() since the ** last time the wal file was deleted. The wal file is deleted when the ** database is changed back to rollback mode or when the number of database -** clients drops to zero. If either snapshot handle was obtained before the -** wal file was last deleted, the value returned by this function +** clients drops to zero. If either snapshot handle was obtained before the +** wal file was last deleted, the value returned by this function ** is undefined. ** ** Otherwise, this API returns a negative value if P1 refers to an older ** snapshot than P2, zero if the two handles refer to the same database ** snapshot, and a positive value if P1 is a newer snapshot than P2. +** +** This interface is only available if SQLite is compiled with the +** [SQLITE_ENABLE_SNAPSHOT] option. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp( sqlite3_snapshot *p1, @@ -8992,23 +10497,26 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp( /* ** CAPI3REF: Recover snapshots from a wal file -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** -** If all connections disconnect from a database file but do not perform -** a checkpoint, the existing wal file is opened along with the database -** file the next time the database is opened. At this point it is only -** possible to successfully call sqlite3_snapshot_open() to open the most -** recent snapshot of the database (the one at the head of the wal file), -** even though the wal file may contain other valid snapshots for which -** clients have sqlite3_snapshot handles. +** If a [WAL file] remains on disk after all database connections close +** (either through the use of the [SQLITE_FCNTL_PERSIST_WAL] [file control] +** or because the last process to have the database opened exited without +** calling [sqlite3_close()]) and a new connection is subsequently opened +** on that database and [WAL file], the [sqlite3_snapshot_open()] interface +** will only be able to open the last transaction added to the WAL file +** even though the WAL file contains other valid transactions. ** -** This function attempts to scan the wal file associated with database zDb +** This function attempts to scan the WAL file associated with database zDb ** of database handle db and make all valid snapshots available to ** sqlite3_snapshot_open(). It is an error if there is already a read -** transaction open on the database, or if the database is not a wal mode +** transaction open on the database, or if the database is not a WAL mode ** database. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +** +** This interface is only available if SQLite is compiled with the +** [SQLITE_ENABLE_SNAPSHOT] option. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb); @@ -9037,7 +10545,7 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const c ** representation of the database will usually only exist if there has ** been a prior call to [sqlite3_deserialize(D,S,...)] with the same ** values of D and S. -** The size of the database is written into *P even if the +** The size of the database is written into *P even if the ** SQLITE_SERIALIZE_NOCOPY bit is set but no contiguous copy ** of the database exists. ** @@ -9045,8 +10553,8 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const c ** SQLITE_SERIALIZE_NOCOPY bit is omitted from argument F if a memory ** allocation error occurs. ** -** This interface is only available if SQLite is compiled with the -** [SQLITE_ENABLE_DESERIALIZE] option. +** This interface is omitted if SQLite is compiled with the +** [SQLITE_OMIT_DESERIALIZE] option. */ SQLITE_API unsigned char *sqlite3_serialize( sqlite3 *db, /* The database connection */ @@ -9074,7 +10582,7 @@ SQLITE_API unsigned char *sqlite3_serialize( /* ** CAPI3REF: Deserialize a database ** -** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the +** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the ** [database connection] D to disconnect from database S and then ** reopen S as an in-memory database based on the serialization contained ** in P. The serialized database P is N bytes in size. M is the size of @@ -9093,12 +10601,16 @@ SQLITE_API unsigned char *sqlite3_serialize( ** database is currently in a read transaction or is involved in a backup ** operation. ** -** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the +** It is not possible to deserialized into the TEMP database. If the +** S argument to sqlite3_deserialize(D,S,P,N,M,F) is "temp" then the +** function returns SQLITE_ERROR. +** +** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the ** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then ** [sqlite3_free()] is invoked on argument P prior to returning. ** -** This interface is only available if SQLite is compiled with the -** [SQLITE_ENABLE_DESERIALIZE] option. +** This interface is omitted if SQLite is compiled with the +** [SQLITE_OMIT_DESERIALIZE] option. */ SQLITE_API int sqlite3_deserialize( sqlite3 *db, /* The database connection */ @@ -9119,7 +10631,7 @@ SQLITE_API int sqlite3_deserialize( ** in the P argument is held in memory obtained from [sqlite3_malloc64()] ** and that SQLite should take ownership of this memory and automatically ** free it when it has finished using it. Without this flag, the caller -** is resposible for freeing any dynamically allocated memory. +** is responsible for freeing any dynamically allocated memory. ** ** The SQLITE_DESERIALIZE_RESIZEABLE flag means that SQLite is allowed to ** grow the size of the database using calls to [sqlite3_realloc64()]. This @@ -9142,6 +10654,19 @@ SQLITE_API int sqlite3_deserialize( # undef double #endif +#if defined(__wasi__) +# undef SQLITE_WASI +# define SQLITE_WASI 1 +# undef SQLITE_OMIT_WAL +# define SQLITE_OMIT_WAL 1/* because it requires shared memory APIs */ +# ifndef SQLITE_OMIT_LOAD_EXTENSION +# define SQLITE_OMIT_LOAD_EXTENSION +# endif +# ifndef SQLITE_THREADSAFE +# define SQLITE_THREADSAFE 0 +# endif +#endif + #ifdef __cplusplus } /* End of the 'extern "C"' block */ #endif @@ -9208,7 +10733,7 @@ struct sqlite3_rtree_geometry { }; /* -** Register a 2nd-generation geometry callback named zScore that can be +** Register a 2nd-generation geometry callback named zScore that can be ** used as part of an R-Tree geometry query as follows: ** ** SELECT ... FROM WHERE MATCH $zQueryFunc(... params ...) @@ -9223,7 +10748,7 @@ SQLITE_API int sqlite3_rtree_query_callback( /* -** A pointer to a structure of the following type is passed as the +** A pointer to a structure of the following type is passed as the ** argument to scored geometry callback registered using ** sqlite3_rtree_query_callback(). ** @@ -9245,7 +10770,7 @@ struct sqlite3_rtree_query_info { sqlite3_int64 iRowid; /* Rowid for current entry */ sqlite3_rtree_dbl rParentScore; /* Score of parent node */ int eParentWithin; /* Visibility of parent node */ - int eWithin; /* OUT: Visiblity */ + int eWithin; /* OUT: Visibility */ sqlite3_rtree_dbl rScore; /* OUT: Write the score here */ /* The following fields are only available in 3.8.11 and later */ sqlite3_value **apSqlParam; /* Original SQL values of parameters */ @@ -9318,7 +10843,7 @@ typedef struct sqlite3_changeset_iter sqlite3_changeset_iter; ** is not possible for an application to register a pre-update hook on a ** database handle that has one or more session objects attached. Nor is ** it possible to create a session object attached to a database handle for -** which a pre-update hook is already defined. The results of attempting +** which a pre-update hook is already defined. The results of attempting ** either of these things are undefined. ** ** The session object will be used to create changesets for tables in @@ -9336,17 +10861,62 @@ SQLITE_API int sqlite3session_create( ** CAPI3REF: Delete A Session Object ** DESTRUCTOR: sqlite3_session ** -** Delete a session object previously allocated using +** Delete a session object previously allocated using ** [sqlite3session_create()]. Once a session object has been deleted, the ** results of attempting to use pSession with any other session module ** function are undefined. ** ** Session objects must be deleted before the database handle to which they -** are attached is closed. Refer to the documentation for +** are attached is closed. Refer to the documentation for ** [sqlite3session_create()] for details. */ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession); +/* +** CAPI3REF: Configure a Session Object +** METHOD: sqlite3_session +** +** This method is used to configure a session object after it has been +** created. At present the only valid values for the second parameter are +** [SQLITE_SESSION_OBJCONFIG_SIZE] and [SQLITE_SESSION_OBJCONFIG_ROWID]. +** +*/ +SQLITE_API int sqlite3session_object_config(sqlite3_session*, int op, void *pArg); + +/* +** CAPI3REF: Options for sqlite3session_object_config +** +** The following values may passed as the the 2nd parameter to +** sqlite3session_object_config(). +** +**
    SQLITE_SESSION_OBJCONFIG_SIZE
    +** This option is used to set, clear or query the flag that enables +** the [sqlite3session_changeset_size()] API. Because it imposes some +** computational overhead, this API is disabled by default. Argument +** pArg must point to a value of type (int). If the value is initially +** 0, then the sqlite3session_changeset_size() API is disabled. If it +** is greater than 0, then the same API is enabled. Or, if the initial +** value is less than zero, no change is made. In all cases the (int) +** variable is set to 1 if the sqlite3session_changeset_size() API is +** enabled following the current call, or 0 otherwise. +** +** It is an error (SQLITE_MISUSE) to attempt to modify this setting after +** the first table has been attached to the session object. +** +**
    SQLITE_SESSION_OBJCONFIG_ROWID
    +** This option is used to set, clear or query the flag that enables +** collection of data for tables with no explicit PRIMARY KEY. +** +** Normally, tables with no explicit PRIMARY KEY are simply ignored +** by the sessions module. However, if this flag is set, it behaves +** as if such tables have a column "_rowid_ INTEGER PRIMARY KEY" inserted +** as their leftmost columns. +** +** It is an error (SQLITE_MISUSE) to attempt to modify this setting after +** the first table has been attached to the session object. +*/ +#define SQLITE_SESSION_OBJCONFIG_SIZE 1 +#define SQLITE_SESSION_OBJCONFIG_ROWID 2 /* ** CAPI3REF: Enable Or Disable A Session Object @@ -9360,10 +10930,10 @@ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession); ** the eventual changesets. ** ** Passing zero to this function disables the session. Passing a value -** greater than zero enables it. Passing a value less than zero is a +** greater than zero enables it. Passing a value less than zero is a ** no-op, and may be used to query the current state of the session. ** -** The return value indicates the final state of the session object: 0 if +** The return value indicates the final state of the session object: 0 if ** the session is disabled, or 1 if it is enabled. */ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); @@ -9378,7 +10948,7 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); **
      **
    • The session object "indirect" flag is set when the change is ** made, or -**
    • The change is made by an SQL trigger or foreign key action +**
    • The change is made by an SQL trigger or foreign key action ** instead of directly as a result of a users SQL statement. **
    ** @@ -9390,10 +10960,10 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); ** flag. If the second argument passed to this function is zero, then the ** indirect flag is cleared. If it is greater than zero, the indirect flag ** is set. Passing a value less than zero does not modify the current value -** of the indirect flag, and may be used to query the current state of the +** of the indirect flag, and may be used to query the current state of the ** indirect flag for the specified session object. ** -** The return value indicates the final state of the indirect flag: 0 if +** The return value indicates the final state of the indirect flag: 0 if ** it is clear, or 1 if it is set. */ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect); @@ -9403,20 +10973,20 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect) ** METHOD: sqlite3_session ** ** If argument zTab is not NULL, then it is the name of a table to attach -** to the session object passed as the first argument. All subsequent changes -** made to the table while the session object is enabled will be recorded. See +** to the session object passed as the first argument. All subsequent changes +** made to the table while the session object is enabled will be recorded. See ** documentation for [sqlite3session_changeset()] for further details. ** ** Or, if argument zTab is NULL, then changes are recorded for all tables -** in the database. If additional tables are added to the database (by -** executing "CREATE TABLE" statements) after this call is made, changes for +** in the database. If additional tables are added to the database (by +** executing "CREATE TABLE" statements) after this call is made, changes for ** the new tables are also recorded. ** ** Changes can only be recorded for tables that have a PRIMARY KEY explicitly -** defined as part of their CREATE TABLE statement. It does not matter if the +** defined as part of their CREATE TABLE statement. It does not matter if the ** PRIMARY KEY is an "INTEGER PRIMARY KEY" (rowid alias) or not. The PRIMARY ** KEY may consist of a single column, or may be a composite key. -** +** ** It is not an error if the named table does not exist in the database. Nor ** is it an error if the named table does not have a PRIMARY KEY. However, ** no changes will be recorded in either of these scenarios. @@ -9424,29 +10994,29 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect) ** Changes are not recorded for individual rows that have NULL values stored ** in one or more of their PRIMARY KEY columns. ** -** SQLITE_OK is returned if the call completes without error. Or, if an error +** SQLITE_OK is returned if the call completes without error. Or, if an error ** occurs, an SQLite error code (e.g. SQLITE_NOMEM) is returned. ** **

    Special sqlite_stat1 Handling

    ** -** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to +** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to ** some of the rules above. In SQLite, the schema of sqlite_stat1 is: ** 
    -**        CREATE TABLE sqlite_stat1(tbl,idx,stat)  
+**        CREATE TABLE sqlite_stat1(tbl,idx,stat)
 **
    ** -** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are -** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes +** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are +** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes ** are recorded for rows for which (idx IS NULL) is true. However, for such ** rows a zero-length blob (SQL value X'') is stored in the changeset or ** patchset instead of a NULL value. This allows such changesets to be ** manipulated by legacy implementations of sqlite3changeset_invert(), ** concat() and similar. ** -** The sqlite3changeset_apply() function automatically converts the +** The sqlite3changeset_apply() function automatically converts the ** zero-length blob back to a NULL value when updating the sqlite_stat1 ** table. However, if the application calls sqlite3changeset_new(), -** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset +** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset ** iterator directly (including on a changeset iterator passed to a ** conflict-handler callback) then the X'' value is returned. The application ** must translate X'' to NULL itself if required. @@ -9465,10 +11035,10 @@ SQLITE_API int sqlite3session_attach( ** CAPI3REF: Set a table filter on a Session Object. ** METHOD: sqlite3_session ** -** The second argument (xFilter) is the "filter callback". For changes to rows +** The second argument (xFilter) is the "filter callback". For changes to rows ** in tables that are not attached to the Session object, the filter is called -** to determine whether changes to the table's rows should be tracked or not. -** If xFilter returns 0, changes is not tracked. Note that once a table is +** to determine whether changes to the table's rows should be tracked or not. +** If xFilter returns 0, changes are not tracked. Note that once a table is ** attached, xFilter will not be called again. */ SQLITE_API void sqlite3session_table_filter( @@ -9484,9 +11054,9 @@ SQLITE_API void sqlite3session_table_filter( ** CAPI3REF: Generate A Changeset From A Session Object ** METHOD: sqlite3_session ** -** Obtain a changeset containing changes to the tables attached to the -** session object passed as the first argument. If successful, -** set *ppChangeset to point to a buffer containing the changeset +** Obtain a changeset containing changes to the tables attached to the +** session object passed as the first argument. If successful, +** set *ppChangeset to point to a buffer containing the changeset ** and *pnChangeset to the size of the changeset in bytes before returning ** SQLITE_OK. If an error occurs, set both *ppChangeset and *pnChangeset to ** zero and return an SQLite error code. @@ -9501,7 +11071,7 @@ SQLITE_API void sqlite3session_table_filter( ** modifies the values of primary key columns. If such a change is made, it ** is represented in a changeset as a DELETE followed by an INSERT. ** -** Changes are not recorded for rows that have NULL values stored in one or +** Changes are not recorded for rows that have NULL values stored in one or ** more of their PRIMARY KEY columns. If such a row is inserted or deleted, ** no corresponding change is present in the changesets returned by this ** function. If an existing row with one or more NULL values stored in @@ -9554,14 +11124,14 @@ SQLITE_API void sqlite3session_table_filter( **
      **
    • For each record generated by an insert, the database is queried ** for a row with a matching primary key. If one is found, an INSERT -** change is added to the changeset. If no such row is found, no change +** change is added to the changeset. If no such row is found, no change ** is added to the changeset. ** -**
    • For each record generated by an update or delete, the database is +**
    • For each record generated by an update or delete, the database is ** queried for a row with a matching primary key. If such a row is ** found and one or more of the non-primary key fields have been -** modified from their original values, an UPDATE change is added to -** the changeset. Or, if no such row is found in the table, a DELETE +** modified from their original values, an UPDATE change is added to +** the changeset. Or, if no such row is found in the table, a DELETE ** change is added to the changeset. If there is a row with a matching ** primary key in the database, but all fields contain their original ** values, no change is added to the changeset. @@ -9569,7 +11139,7 @@ SQLITE_API void sqlite3session_table_filter( ** ** This means, amongst other things, that if a row is inserted and then later ** deleted while a session object is active, neither the insert nor the delete -** will be present in the changeset. Or if a row is deleted and then later a +** will be present in the changeset. Or if a row is deleted and then later a ** row with the same primary key values inserted while a session object is ** active, the resulting changeset will contain an UPDATE change instead of ** a DELETE and an INSERT. @@ -9578,10 +11148,10 @@ SQLITE_API void sqlite3session_table_filter( ** it does not accumulate records when rows are inserted, updated or deleted. ** This may appear to have some counter-intuitive effects if a single row ** is written to more than once during a session. For example, if a row -** is inserted while a session object is enabled, then later deleted while +** is inserted while a session object is enabled, then later deleted while ** the same session object is disabled, no INSERT record will appear in the ** changeset, even though the delete took place while the session was disabled. -** Or, if one field of a row is updated while a session is disabled, and +** Or, if one field of a row is updated while a session is disabled, and ** another field of the same row is updated while the session is enabled, the ** resulting changeset will contain an UPDATE change that updates both fields. */ @@ -9591,6 +11161,22 @@ SQLITE_API int sqlite3session_changeset( void **ppChangeset /* OUT: Buffer containing changeset */ ); +/* +** CAPI3REF: Return An Upper-limit For The Size Of The Changeset +** METHOD: sqlite3_session +** +** By default, this function always returns 0. For it to return +** a useful result, the sqlite3_session object must have been configured +** to enable this API using sqlite3session_object_config() with the +** SQLITE_SESSION_OBJCONFIG_SIZE verb. +** +** When enabled, this function returns an upper limit, in bytes, for the size +** of the changeset that might be produced if sqlite3session_changeset() were +** called. The final changeset size might be equal to or smaller than the +** size in bytes returned by this function. +*/ +SQLITE_API sqlite3_int64 sqlite3session_changeset_size(sqlite3_session *pSession); + /* ** CAPI3REF: Load The Difference Between Tables Into A Session ** METHOD: sqlite3_session @@ -9602,7 +11188,7 @@ SQLITE_API int sqlite3session_changeset( ** an error). ** ** Argument zFromDb must be the name of a database ("main", "temp" etc.) -** attached to the same database handle as the session object that contains +** attached to the same database handle as the session object that contains ** a table compatible with the table attached to the session by this function. ** A table is considered compatible if it: ** @@ -9618,33 +11204,33 @@ SQLITE_API int sqlite3session_changeset( ** APIs, tables without PRIMARY KEYs are simply ignored. ** ** This function adds a set of changes to the session object that could be -** used to update the table in database zFrom (call this the "from-table") -** so that its content is the same as the table attached to the session +** used to update the table in database zFrom (call this the "from-table") +** so that its content is the same as the table attached to the session ** object (call this the "to-table"). Specifically: ** **
        -**
      • For each row (primary key) that exists in the to-table but not in +**
      • For each row (primary key) that exists in the to-table but not in ** the from-table, an INSERT record is added to the session object. ** -**
      • For each row (primary key) that exists in the to-table but not in +**
      • For each row (primary key) that exists in the to-table but not in ** the from-table, a DELETE record is added to the session object. ** -**
      • For each row (primary key) that exists in both tables, but features +**
      • For each row (primary key) that exists in both tables, but features ** different non-PK values in each, an UPDATE record is added to the -** session. +** session. **
      ** ** To clarify, if this function is called and then a changeset constructed -** using [sqlite3session_changeset()], then after applying that changeset to -** database zFrom the contents of the two compatible tables would be +** using [sqlite3session_changeset()], then after applying that changeset to +** database zFrom the contents of the two compatible tables would be ** identical. ** ** It an error if database zFrom does not exist or does not contain the ** required compatible table. ** -** If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite +** If the operation is successful, SQLITE_OK is returned. Otherwise, an SQLite ** error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg -** may be set to point to a buffer containing an English language error +** may be set to point to a buffer containing an English language error ** message. It is the responsibility of the caller to free this buffer using ** sqlite3_free(). */ @@ -9663,19 +11249,19 @@ SQLITE_API int sqlite3session_diff( ** The differences between a patchset and a changeset are that: ** **
        -**
      • DELETE records consist of the primary key fields only. The +**
      • DELETE records consist of the primary key fields only. The ** original values of other fields are omitted. -**
      • The original values of any modified fields are omitted from +**
      • The original values of any modified fields are omitted from ** UPDATE records. **
      ** -** A patchset blob may be used with up to date versions of all -** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(), +** A patchset blob may be used with up to date versions of all +** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(), ** which returns SQLITE_CORRUPT if it is passed a patchset. Similarly, ** attempting to use a patchset blob with old versions of the -** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error. +** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error. ** -** Because the non-primary key "old.*" fields are omitted, no +** Because the non-primary key "old.*" fields are omitted, no ** SQLITE_CHANGESET_DATA conflicts can be detected or reported if a patchset ** is passed to the sqlite3changeset_apply() API. Other conflict types work ** in the same way as for changesets. @@ -9694,22 +11280,30 @@ SQLITE_API int sqlite3session_patchset( /* ** CAPI3REF: Test if a changeset has recorded any changes. ** -** Return non-zero if no changes to attached tables have been recorded by -** the session object passed as the first argument. Otherwise, if one or +** Return non-zero if no changes to attached tables have been recorded by +** the session object passed as the first argument. Otherwise, if one or ** more changes have been recorded, return zero. ** ** Even if this function returns zero, it is possible that calling ** [sqlite3session_changeset()] on the session handle may still return a -** changeset that contains no changes. This can happen when a row in -** an attached table is modified and then later on the original values +** changeset that contains no changes. This can happen when a row in +** an attached table is modified and then later on the original values ** are restored. However, if this function returns non-zero, then it is -** guaranteed that a call to sqlite3session_changeset() will return a +** guaranteed that a call to sqlite3session_changeset() will return a ** changeset containing zero changes. */ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); /* -** CAPI3REF: Create An Iterator To Traverse A Changeset +** CAPI3REF: Query for the amount of heap memory used by a session object. +** +** This API returns the total amount of heap memory in bytes currently +** used by the session object passed as the only argument. +*/ +SQLITE_API sqlite3_int64 sqlite3session_memory_used(sqlite3_session *pSession); + +/* +** CAPI3REF: Create An Iterator To Traverse A Changeset ** CONSTRUCTOR: sqlite3_changeset_iter ** ** Create an iterator used to iterate through the contents of a changeset. @@ -9717,7 +11311,7 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); ** is returned. Otherwise, if an error occurs, *pp is set to zero and an ** SQLite error code is returned. ** -** The following functions can be used to advance and query a changeset +** The following functions can be used to advance and query a changeset ** iterator created by this function: ** **
        @@ -9734,26 +11328,52 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); ** ** Assuming the changeset blob was created by one of the ** [sqlite3session_changeset()], [sqlite3changeset_concat()] or -** [sqlite3changeset_invert()] functions, all changes within the changeset -** that apply to a single table are grouped together. This means that when -** an application iterates through a changeset using an iterator created by -** this function, all changes that relate to a single table are visited -** consecutively. There is no chance that the iterator will visit a change -** the applies to table X, then one for table Y, and then later on visit +** [sqlite3changeset_invert()] functions, all changes within the changeset +** that apply to a single table are grouped together. This means that when +** an application iterates through a changeset using an iterator created by +** this function, all changes that relate to a single table are visited +** consecutively. There is no chance that the iterator will visit a change +** the applies to table X, then one for table Y, and then later on visit ** another change for table X. +** +** The behavior of sqlite3changeset_start_v2() and its streaming equivalent +** may be modified by passing a combination of +** [SQLITE_CHANGESETSTART_INVERT | supported flags] as the 4th parameter. +** +** Note that the sqlite3changeset_start_v2() API is still experimental +** and therefore subject to change. */ SQLITE_API int sqlite3changeset_start( sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */ int nChangeset, /* Size of changeset blob in bytes */ void *pChangeset /* Pointer to blob containing changeset */ ); +SQLITE_API int sqlite3changeset_start_v2( + sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */ + int nChangeset, /* Size of changeset blob in bytes */ + void *pChangeset, /* Pointer to blob containing changeset */ + int flags /* SESSION_CHANGESETSTART_* flags */ +); + +/* +** CAPI3REF: Flags for sqlite3changeset_start_v2 +** +** The following flags may passed via the 4th parameter to +** [sqlite3changeset_start_v2] and [sqlite3changeset_start_v2_strm]: +** +**
        SQLITE_CHANGESETAPPLY_INVERT
        +** Invert the changeset while iterating through it. This is equivalent to +** inverting a changeset using sqlite3changeset_invert() before applying it. +** It is an error to specify this flag with a patchset. +*/ +#define SQLITE_CHANGESETSTART_INVERT 0x0002 /* ** CAPI3REF: Advance A Changeset Iterator ** METHOD: sqlite3_changeset_iter ** -** This function may only be used with iterators created by function +** This function may only be used with iterators created by the function ** [sqlite3changeset_start()]. If it is called on an iterator passed to ** a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE ** is returned and the call has no effect. @@ -9764,12 +11384,12 @@ SQLITE_API int sqlite3changeset_start( ** point to the first change in the changeset. Each subsequent call advances ** the iterator to point to the next change in the changeset (if any). If ** no error occurs and the iterator points to a valid change after a call -** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned. +** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned. ** Otherwise, if all changes in the changeset have already been visited, ** SQLITE_DONE is returned. ** -** If an error occurs, an SQLite error code is returned. Possible error -** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or +** If an error occurs, an SQLite error code is returned. Possible error +** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or ** SQLITE_NOMEM. */ SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter); @@ -9784,18 +11404,23 @@ SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter); ** call to [sqlite3changeset_next()] must have returned [SQLITE_ROW]. If this ** is not the case, this function returns [SQLITE_MISUSE]. ** -** If argument pzTab is not NULL, then *pzTab is set to point to a -** nul-terminated utf-8 encoded string containing the name of the table -** affected by the current change. The buffer remains valid until either -** sqlite3changeset_next() is called on the iterator or until the -** conflict-handler function returns. If pnCol is not NULL, then *pnCol is -** set to the number of columns in the table affected by the change. If -** pbIncorrect is not NULL, then *pbIndirect is set to true (1) if the change +** Arguments pOp, pnCol and pzTab may not be NULL. Upon return, three +** outputs are set through these pointers: +** +** *pOp is set to one of [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], +** depending on the type of change that the iterator currently points to; +** +** *pnCol is set to the number of columns in the table affected by the change; and +** +** *pzTab is set to point to a nul-terminated utf-8 encoded string containing +** the name of the table affected by the current change. The buffer remains +** valid until either sqlite3changeset_next() is called on the iterator +** or until the conflict-handler function returns. +** +** If pbIndirect is not NULL, then *pbIndirect is set to true (1) if the change ** is an indirect change, or false (0) otherwise. See the documentation for ** [sqlite3session_indirect()] for a description of direct and indirect -** changes. Finally, if pOp is not NULL, then *pOp is set to one of -** [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the -** type of change that the iterator currently points to. +** changes. ** ** If no error occurs, SQLITE_OK is returned. If an error does occur, an ** SQLite error code is returned. The values of the output variables may not @@ -9848,7 +11473,7 @@ SQLITE_API int sqlite3changeset_pk( ** The pIter argument passed to this function may either be an iterator ** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator ** created by [sqlite3changeset_start()]. In the latter case, the most recent -** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. ** Furthermore, it may only be called if the type of change that the iterator ** currently points to is either [SQLITE_DELETE] or [SQLITE_UPDATE]. Otherwise, ** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. @@ -9858,9 +11483,9 @@ SQLITE_API int sqlite3changeset_pk( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the vector of +** sqlite3_value object containing the iVal'th value from the vector of ** original row values stored as part of the UPDATE or DELETE change and -** returns SQLITE_OK. The name of the function comes from the fact that this +** returns SQLITE_OK. The name of the function comes from the fact that this ** is similar to the "old.*" columns available to update or delete triggers. ** ** If some other error occurs (e.g. an OOM condition), an SQLite error code @@ -9879,7 +11504,7 @@ SQLITE_API int sqlite3changeset_old( ** The pIter argument passed to this function may either be an iterator ** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator ** created by [sqlite3changeset_start()]. In the latter case, the most recent -** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. ** Furthermore, it may only be called if the type of change that the iterator ** currently points to is either [SQLITE_UPDATE] or [SQLITE_INSERT]. Otherwise, ** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. @@ -9889,12 +11514,12 @@ SQLITE_API int sqlite3changeset_old( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the vector of +** sqlite3_value object containing the iVal'th value from the vector of ** new row values stored as part of the UPDATE or INSERT change and ** returns SQLITE_OK. If the change is an UPDATE and does not include -** a new value for the requested column, *ppValue is set to NULL and -** SQLITE_OK returned. The name of the function comes from the fact that -** this is similar to the "new.*" columns available to update or delete +** a new value for the requested column, *ppValue is set to NULL and +** SQLITE_OK returned. The name of the function comes from the fact that +** this is similar to the "new.*" columns available to update or delete ** triggers. ** ** If some other error occurs (e.g. an OOM condition), an SQLite error code @@ -9921,7 +11546,7 @@ SQLITE_API int sqlite3changeset_new( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the +** sqlite3_value object containing the iVal'th value from the ** "conflicting row" associated with the current conflict-handler callback ** and returns SQLITE_OK. ** @@ -9965,7 +11590,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts( ** call has no effect. ** ** If an error was encountered within a call to an sqlite3changeset_xxx() -** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an +** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an ** [SQLITE_NOMEM] in [sqlite3changeset_new()]) then an error code corresponding ** to that error is returned by this function. Otherwise, SQLITE_OK is ** returned. This is to allow the following pattern (pseudo-code): @@ -9977,7 +11602,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts( ** } ** rc = sqlite3changeset_finalize(); ** if( rc!=SQLITE_OK ){ -** // An error has occurred +** // An error has occurred ** } ** */ @@ -10005,7 +11630,7 @@ SQLITE_API int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter); ** zeroed and an SQLite error code returned. ** ** It is the responsibility of the caller to eventually call sqlite3_free() -** on the *ppOut pointer to free the buffer allocation following a successful +** on the *ppOut pointer to free the buffer allocation following a successful ** call to this function. ** ** WARNING/TODO: This function currently assumes that the input is a valid @@ -10019,11 +11644,11 @@ SQLITE_API int sqlite3changeset_invert( /* ** CAPI3REF: Concatenate Two Changeset Objects ** -** This function is used to concatenate two changesets, A and B, into a +** This function is used to concatenate two changesets, A and B, into a ** single changeset. The result is a changeset equivalent to applying -** changeset A followed by changeset B. +** changeset A followed by changeset B. ** -** This function combines the two input changesets using an +** This function combines the two input changesets using an ** sqlite3_changegroup object. Calling it produces similar results as the ** following code fragment: ** @@ -10055,7 +11680,7 @@ SQLITE_API int sqlite3changeset_concat( /* ** CAPI3REF: Changegroup Handle ** -** A changegroup is an object used to combine two or more +** A changegroup is an object used to combine two or more ** [changesets] or [patchsets] */ typedef struct sqlite3_changegroup sqlite3_changegroup; @@ -10071,7 +11696,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; ** ** If successful, this function returns SQLITE_OK and populates (*pp) with ** a pointer to a new sqlite3_changegroup object before returning. The caller -** should eventually free the returned object using a call to +** should eventually free the returned object using a call to ** sqlite3changegroup_delete(). If an error occurs, an SQLite error code ** (i.e. SQLITE_NOMEM) is returned and *pp is set to NULL. ** @@ -10083,7 +11708,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; **
      • Zero or more changesets (or patchsets) are added to the object ** by calling sqlite3changegroup_add(). ** -**
      • The result of combining all input changesets together is obtained +**
      • The result of combining all input changesets together is obtained ** by the application via a call to sqlite3changegroup_output(). ** **
      • The object is deleted using a call to sqlite3changegroup_delete(). @@ -10092,7 +11717,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; ** Any number of calls to add() and output() may be made between the calls to ** new() and delete(), and in any order. ** -** As well as the regular sqlite3changegroup_add() and +** As well as the regular sqlite3changegroup_add() and ** sqlite3changegroup_output() functions, also available are the streaming ** versions sqlite3changegroup_add_strm() and sqlite3changegroup_output_strm(). */ @@ -10103,7 +11728,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** METHOD: sqlite3_changegroup ** ** Add all changes within the changeset (or patchset) in buffer pData (size -** nData bytes) to the changegroup. +** nData bytes) to the changegroup. ** ** If the buffer contains a patchset, then all prior calls to this function ** on the same changegroup object must also have specified patchsets. Or, if @@ -10130,7 +11755,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** changeset was recorded immediately after the changesets already ** added to the changegroup. ** INSERT UPDATE -** The INSERT change remains in the changegroup. The values in the +** The INSERT change remains in the changegroup. The values in the ** INSERT change are modified as if the row was inserted by the ** existing change and then updated according to the new change. ** INSERT DELETE @@ -10141,17 +11766,17 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** changeset was recorded immediately after the changesets already ** added to the changegroup. ** UPDATE UPDATE -** The existing UPDATE remains within the changegroup. It is amended -** so that the accompanying values are as if the row was updated once +** The existing UPDATE remains within the changegroup. It is amended +** so that the accompanying values are as if the row was updated once ** by the existing change and then again by the new change. ** UPDATE DELETE ** The existing UPDATE is replaced by the new DELETE within the ** changegroup. ** DELETE INSERT ** If one or more of the column values in the row inserted by the -** new change differ from those in the row deleted by the existing +** new change differ from those in the row deleted by the existing ** change, the existing DELETE is replaced by an UPDATE within the -** changegroup. Otherwise, if the inserted row is exactly the same +** changegroup. Otherwise, if the inserted row is exactly the same ** as the deleted row, the existing DELETE is simply discarded. ** DELETE UPDATE ** The new change is ignored. This case does not occur if the new @@ -10169,8 +11794,8 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** case, this function fails with SQLITE_SCHEMA. If the input changeset ** appears to be corrupt and the corruption is detected, SQLITE_CORRUPT is ** returned. Or, if an out-of-memory condition occurs during processing, this -** function returns SQLITE_NOMEM. In all cases, if an error occurs the -** final contents of the changegroup is undefined. +** function returns SQLITE_NOMEM. In all cases, if an error occurs the state +** of the final contents of the changegroup is undefined. ** ** If no error occurs, SQLITE_OK is returned. */ @@ -10196,7 +11821,7 @@ SQLITE_API int sqlite3changegroup_add(sqlite3_changegroup*, int nData, void *pDa ** ** If an error occurs, an SQLite error code is returned and the output ** variables (*pnData) and (*ppData) are set to 0. Otherwise, SQLITE_OK -** is returned and the output variables are set to the size of and a +** is returned and the output variables are set to the size of and a ** pointer to the output buffer, respectively. In this case it is the ** responsibility of the caller to eventually free the buffer using a ** call to sqlite3_free(). @@ -10218,7 +11843,7 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** ** Apply a changeset or patchset to a database. These functions attempt to ** update the "main" database attached to handle db with the changes found in -** the changeset passed via the second and third arguments. +** the changeset passed via the second and third arguments. ** ** The fourth argument (xFilter) passed to these functions is the "filter ** callback". If it is not NULL, then for each table affected by at least one @@ -10229,16 +11854,16 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** Otherwise, if the return value is non-zero or the xFilter argument to ** is NULL, all changes related to the table are attempted. ** -** For each table that is not excluded by the filter callback, this function -** tests that the target database contains a compatible table. A table is +** For each table that is not excluded by the filter callback, this function +** tests that the target database contains a compatible table. A table is ** considered compatible if all of the following are true: ** **
          -**
        • The table has the same name as the name recorded in the +**
        • The table has the same name as the name recorded in the ** changeset, and -**
        • The table has at least as many columns as recorded in the +**
        • The table has at least as many columns as recorded in the ** changeset, and -**
        • The table has primary key columns in the same position as +**
        • The table has primary key columns in the same position as ** recorded in the changeset. **
        ** @@ -10247,11 +11872,11 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** via the sqlite3_log() mechanism with the error code SQLITE_SCHEMA. At most ** one such warning is issued for each table in the changeset. ** -** For each change for which there is a compatible table, an attempt is made -** to modify the table contents according to the UPDATE, INSERT or DELETE -** change. If a change cannot be applied cleanly, the conflict handler -** function passed as the fifth argument to sqlite3changeset_apply() may be -** invoked. A description of exactly when the conflict handler is invoked for +** For each change for which there is a compatible table, an attempt is made +** to modify the table contents according to the UPDATE, INSERT or DELETE +** change. If a change cannot be applied cleanly, the conflict handler +** function passed as the fifth argument to sqlite3changeset_apply() may be +** invoked. A description of exactly when the conflict handler is invoked for ** each type of change is below. ** ** Unlike the xFilter argument, xConflict may not be passed NULL. The results @@ -10259,23 +11884,23 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** argument are undefined. ** ** Each time the conflict handler function is invoked, it must return one -** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or +** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or ** [SQLITE_CHANGESET_REPLACE]. SQLITE_CHANGESET_REPLACE may only be returned ** if the second argument passed to the conflict handler is either ** SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If the conflict-handler ** returns an illegal value, any changes already made are rolled back and -** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different +** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different ** actions are taken by sqlite3changeset_apply() depending on the value ** returned by each invocation of the conflict-handler function. Refer to -** the documentation for the three +** the documentation for the three ** [SQLITE_CHANGESET_OMIT|available return values] for details. ** **
        **
        DELETE Changes
        -** For each DELETE change, the function checks if the target database -** contains a row with the same primary key value (or values) as the -** original row values stored in the changeset. If it does, and the values -** stored in all non-primary key columns also match the values stored in +** For each DELETE change, the function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values +** stored in all non-primary key columns also match the values stored in ** the changeset the row is deleted from the target database. ** ** If a row with matching primary key values is found, but one or more of @@ -10304,22 +11929,22 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** database table, the trailing fields are populated with their default ** values. ** -** If the attempt to insert the row fails because the database already +** If the attempt to insert the row fails because the database already ** contains a row with the same primary key values, the conflict handler -** function is invoked with the second argument set to +** function is invoked with the second argument set to ** [SQLITE_CHANGESET_CONFLICT]. ** ** If the attempt to insert the row fails because of some other constraint -** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is +** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is ** invoked with the second argument set to [SQLITE_CHANGESET_CONSTRAINT]. -** This includes the case where the INSERT operation is re-attempted because -** an earlier call to the conflict handler function returned +** This includes the case where the INSERT operation is re-attempted because +** an earlier call to the conflict handler function returned ** [SQLITE_CHANGESET_REPLACE]. ** **
        UPDATE Changes
        -** For each UPDATE change, the function checks if the target database -** contains a row with the same primary key value (or values) as the -** original row values stored in the changeset. If it does, and the values +** For each UPDATE change, the function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values ** stored in all modified non-primary key columns also match the values ** stored in the changeset the row is updated within the target database. ** @@ -10335,28 +11960,28 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND] ** passed as the second argument. ** -** If the UPDATE operation is attempted, but SQLite returns -** SQLITE_CONSTRAINT, the conflict-handler function is invoked with +** If the UPDATE operation is attempted, but SQLite returns +** SQLITE_CONSTRAINT, the conflict-handler function is invoked with ** [SQLITE_CHANGESET_CONSTRAINT] passed as the second argument. -** This includes the case where the UPDATE operation is attempted after +** This includes the case where the UPDATE operation is attempted after ** an earlier call to the conflict handler function returned -** [SQLITE_CHANGESET_REPLACE]. +** [SQLITE_CHANGESET_REPLACE]. **
        ** ** It is safe to execute SQL statements, including those that write to the ** table that the callback related to, from within the xConflict callback. -** This can be used to further customize the applications conflict +** This can be used to further customize the application's conflict ** resolution strategy. ** ** All changes made by these functions are enclosed in a savepoint transaction. ** If any other error (aside from a constraint failure when attempting to ** write to the target database) occurs, then the savepoint transaction is -** rolled back, restoring the target database to its original state, and an +** rolled back, restoring the target database to its original state, and an ** SQLite error code returned. ** ** If the output parameters (ppRebase) and (pnRebase) are non-NULL and ** the input is a changeset (not a patchset), then sqlite3changeset_apply_v2() -** may set (*ppRebase) to point to a "rebase" that may be used with the +** may set (*ppRebase) to point to a "rebase" that may be used with the ** sqlite3_rebaser APIs buffer before returning. In this case (*pnRebase) ** is set to the size of the buffer in bytes. It is the responsibility of the ** caller to eventually free any such buffer using sqlite3_free(). The buffer @@ -10401,7 +12026,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ), void *pCtx, /* First argument passed to xConflict */ void **ppRebase, int *pnRebase, /* OUT: Rebase data */ - int flags /* Combination of SESSION_APPLY_* flags */ + int flags /* SESSION_CHANGESETAPPLY_* flags */ ); /* @@ -10417,12 +12042,32 @@ SQLITE_API int sqlite3changeset_apply_v2( ** SAVEPOINT is committed if the changeset or patchset is successfully ** applied, or rolled back if an error occurs. Specifying this flag ** causes the sessions module to omit this savepoint. In this case, if the -** caller has an open transaction or savepoint when apply_v2() is called, +** caller has an open transaction or savepoint when apply_v2() is called, ** it may revert the partially applied changeset by rolling it back. +** +**
        SQLITE_CHANGESETAPPLY_INVERT
        +** Invert the changeset before applying it. This is equivalent to inverting +** a changeset using sqlite3changeset_invert() before applying it. It is +** an error to specify this flag with a patchset. +** +**
        SQLITE_CHANGESETAPPLY_IGNORENOOP
        +** Do not invoke the conflict handler callback for any changes that +** would not actually modify the database even if they were applied. +** Specifically, this means that the conflict handler is not invoked +** for: +**
          +**
        • a delete change if the row being deleted cannot be found, +**
        • an update change if the modified fields are already set to +** their new values in the conflicting row, or +**
        • an insert change if all fields of the conflicting row match +** the row being inserted. +**
        */ #define SQLITE_CHANGESETAPPLY_NOSAVEPOINT 0x0001 +#define SQLITE_CHANGESETAPPLY_INVERT 0x0002 +#define SQLITE_CHANGESETAPPLY_IGNORENOOP 0x0004 -/* +/* ** CAPI3REF: Constants Passed To The Conflict Handler ** ** Values that may be passed as the second argument to a conflict-handler. @@ -10431,32 +12076,32 @@ SQLITE_API int sqlite3changeset_apply_v2( **
        SQLITE_CHANGESET_DATA
        ** The conflict handler is invoked with CHANGESET_DATA as the second argument ** when processing a DELETE or UPDATE change if a row with the required -** PRIMARY KEY fields is present in the database, but one or more other -** (non primary-key) fields modified by the update do not contain the +** PRIMARY KEY fields is present in the database, but one or more other +** (non primary-key) fields modified by the update do not contain the ** expected "before" values. -** +** ** The conflicting row, in this case, is the database row with the matching ** primary key. -** +** **
        SQLITE_CHANGESET_NOTFOUND
        ** The conflict handler is invoked with CHANGESET_NOTFOUND as the second ** argument when processing a DELETE or UPDATE change if a row with the ** required PRIMARY KEY fields is not present in the database. -** +** ** There is no conflicting row in this case. The results of invoking the ** sqlite3changeset_conflict() API are undefined. -** +** **
        SQLITE_CHANGESET_CONFLICT
        ** CHANGESET_CONFLICT is passed as the second argument to the conflict -** handler while processing an INSERT change if the operation would result +** handler while processing an INSERT change if the operation would result ** in duplicate primary key values. -** +** ** The conflicting row in this case is the database row with the matching ** primary key. ** **
        SQLITE_CHANGESET_FOREIGN_KEY
        ** If foreign key handling is enabled, and applying a changeset leaves the -** database in a state containing foreign key violations, the conflict +** database in a state containing foreign key violations, the conflict ** handler is invoked with CHANGESET_FOREIGN_KEY as the second argument ** exactly once before the changeset is committed. If the conflict handler ** returns CHANGESET_OMIT, the changes, including those that caused the @@ -10466,12 +12111,12 @@ SQLITE_API int sqlite3changeset_apply_v2( ** No current or conflicting row information is provided. The only function ** it is possible to call on the supplied sqlite3_changeset_iter handle ** is sqlite3changeset_fk_conflicts(). -** +** **
        SQLITE_CHANGESET_CONSTRAINT
        -** If any other constraint violation occurs while applying a change (i.e. -** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is +** If any other constraint violation occurs while applying a change (i.e. +** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is ** invoked with CHANGESET_CONSTRAINT as the second argument. -** +** ** There is no conflicting row in this case. The results of invoking the ** sqlite3changeset_conflict() API are undefined. ** @@ -10483,7 +12128,7 @@ SQLITE_API int sqlite3changeset_apply_v2( #define SQLITE_CHANGESET_CONSTRAINT 4 #define SQLITE_CHANGESET_FOREIGN_KEY 5 -/* +/* ** CAPI3REF: Constants Returned By The Conflict Handler ** ** A conflict handler callback must return one of the following three values. @@ -10491,13 +12136,13 @@ SQLITE_API int sqlite3changeset_apply_v2( **
        **
        SQLITE_CHANGESET_OMIT
        ** If a conflict handler returns this value no special action is taken. The -** change that caused the conflict is not applied. The session module +** change that caused the conflict is not applied. The session module ** continues to the next change in the changeset. ** **
        SQLITE_CHANGESET_REPLACE
        ** This value may only be returned if the second argument to the conflict ** handler was SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If this -** is not the case, any changes applied so far are rolled back and the +** is not the case, any changes applied so far are rolled back and the ** call to sqlite3changeset_apply() returns SQLITE_MISUSE. ** ** If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_DATA conflict @@ -10510,7 +12155,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the original row is restored to the database before continuing. ** **
        SQLITE_CHANGESET_ABORT
        -** If this value is returned, any changes applied so far are rolled back +** If this value is returned, any changes applied so far are rolled back ** and the call to sqlite3changeset_apply() returns SQLITE_ABORT. **
        */ @@ -10518,20 +12163,20 @@ SQLITE_API int sqlite3changeset_apply_v2( #define SQLITE_CHANGESET_REPLACE 1 #define SQLITE_CHANGESET_ABORT 2 -/* +/* ** CAPI3REF: Rebasing changesets ** EXPERIMENTAL ** ** Suppose there is a site hosting a database in state S0. And that ** modifications are made that move that database to state S1 and a ** changeset recorded (the "local" changeset). Then, a changeset based -** on S0 is received from another site (the "remote" changeset) and -** applied to the database. The database is then in state +** on S0 is received from another site (the "remote" changeset) and +** applied to the database. The database is then in state ** (S1+"remote"), where the exact state depends on any conflict ** resolution decisions (OMIT or REPLACE) made while applying "remote". -** Rebasing a changeset is to update it to take those conflict +** Rebasing a changeset is to update it to take those conflict ** resolution decisions into account, so that the same conflicts -** do not have to be resolved elsewhere in the network. +** do not have to be resolved elsewhere in the network. ** ** For example, if both the local and remote changesets contain an ** INSERT of the same key on "CREATE TABLE t1(a PRIMARY KEY, b)": @@ -10550,7 +12195,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** **
        **
        Local INSERT
        -** This may only conflict with a remote INSERT. If the conflict +** This may only conflict with a remote INSERT. If the conflict ** resolution was OMIT, then add an UPDATE change to the rebased ** changeset. Or, if the conflict resolution was REPLACE, add ** nothing to the rebased changeset. @@ -10574,12 +12219,12 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the old.* values are rebased using the new.* values in the remote ** change. Or, if the resolution is REPLACE, then the change is copied ** into the rebased changeset with updates to columns also updated by -** the conflicting remote UPDATE removed. If this means no columns would +** the conflicting remote UPDATE removed. If this means no columns would ** be updated, the change is omitted. **
        ** -** A local change may be rebased against multiple remote changes -** simultaneously. If a single key is modified by multiple remote +** A local change may be rebased against multiple remote changes +** simultaneously. If a single key is modified by multiple remote ** changesets, they are combined as follows before the local changeset ** is rebased: ** @@ -10592,10 +12237,10 @@ SQLITE_API int sqlite3changeset_apply_v2( ** of the OMIT resolutions. **
      ** -** Note that conflict resolutions from multiple remote changesets are -** combined on a per-field basis, not per-row. This means that in the -** case of multiple remote UPDATE operations, some fields of a single -** local change may be rebased for REPLACE while others are rebased for +** Note that conflict resolutions from multiple remote changesets are +** combined on a per-field basis, not per-row. This means that in the +** case of multiple remote UPDATE operations, some fields of a single +** local change may be rebased for REPLACE while others are rebased for ** OMIT. ** ** In order to rebase a local changeset, the remote changeset must first @@ -10603,7 +12248,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the buffer of rebase information captured. Then: ** **
        -**
      1. An sqlite3_rebaser object is created by calling +**
      2. An sqlite3_rebaser object is created by calling ** sqlite3rebaser_create(). **
      3. The new object is configured with the rebase buffer obtained from ** sqlite3changeset_apply_v2() by calling sqlite3rebaser_configure(). @@ -10624,8 +12269,8 @@ typedef struct sqlite3_rebaser sqlite3_rebaser; ** ** Allocate a new changeset rebaser object. If successful, set (*ppNew) to ** point to the new object and return SQLITE_OK. Otherwise, if an error -** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew) -** to NULL. +** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew) +** to NULL. */ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew); @@ -10639,9 +12284,9 @@ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew); ** sqlite3changeset_apply_v2(). */ SQLITE_API int sqlite3rebaser_configure( - sqlite3_rebaser*, + sqlite3_rebaser*, int nRebase, const void *pRebase -); +); /* ** CAPI3REF: Rebase a changeset @@ -10649,9 +12294,9 @@ SQLITE_API int sqlite3rebaser_configure( ** ** Argument pIn must point to a buffer containing a changeset nIn bytes ** in size. This function allocates and populates a buffer with a copy -** of the changeset rebased rebased according to the configuration of the +** of the changeset rebased according to the configuration of the ** rebaser object passed as the first argument. If successful, (*ppOut) -** is set to point to the new buffer containing the rebased changset and +** is set to point to the new buffer containing the rebased changeset and ** (*pnOut) to its size in bytes and SQLITE_OK returned. It is the ** responsibility of the caller to eventually free the new buffer using ** sqlite3_free(). Otherwise, if an error occurs, (*ppOut) and (*pnOut) @@ -10659,8 +12304,8 @@ SQLITE_API int sqlite3rebaser_configure( */ SQLITE_API int sqlite3rebaser_rebase( sqlite3_rebaser*, - int nIn, const void *pIn, - int *pnOut, void **ppOut + int nIn, const void *pIn, + int *pnOut, void **ppOut ); /* @@ -10671,30 +12316,30 @@ SQLITE_API int sqlite3rebaser_rebase( ** should be one call to this function for each successful invocation ** of sqlite3rebaser_create(). */ -SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); +SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); /* ** CAPI3REF: Streaming Versions of API functions. ** -** The six streaming API xxx_strm() functions serve similar purposes to the +** The six streaming API xxx_strm() functions serve similar purposes to the ** corresponding non-streaming API functions: ** ** ** -**
        Streaming functionNon-streaming equivalent
        sqlite3changeset_apply_strm[sqlite3changeset_apply] -**
        sqlite3changeset_apply_strm_v2[sqlite3changeset_apply_v2] -**
        sqlite3changeset_concat_strm[sqlite3changeset_concat] -**
        sqlite3changeset_invert_strm[sqlite3changeset_invert] -**
        sqlite3changeset_start_strm[sqlite3changeset_start] -**
        sqlite3session_changeset_strm[sqlite3session_changeset] -**
        sqlite3session_patchset_strm[sqlite3session_patchset] +**
        sqlite3changeset_apply_strm[sqlite3changeset_apply] +**
        sqlite3changeset_apply_strm_v2[sqlite3changeset_apply_v2] +**
        sqlite3changeset_concat_strm[sqlite3changeset_concat] +**
        sqlite3changeset_invert_strm[sqlite3changeset_invert] +**
        sqlite3changeset_start_strm[sqlite3changeset_start] +**
        sqlite3session_changeset_strm[sqlite3session_changeset] +**
        sqlite3session_patchset_strm[sqlite3session_patchset] **
        ** ** Non-streaming functions that accept changesets (or patchsets) as input -** require that the entire changeset be stored in a single buffer in memory. -** Similarly, those that return a changeset or patchset do so by returning -** a pointer to a single large buffer allocated using sqlite3_malloc(). -** Normally this is convenient. However, if an application running in a +** require that the entire changeset be stored in a single buffer in memory. +** Similarly, those that return a changeset or patchset do so by returning +** a pointer to a single large buffer allocated using sqlite3_malloc(). +** Normally this is convenient. However, if an application running in a ** low-memory environment is required to handle very large changesets, the ** large contiguous memory allocations required can become onerous. ** @@ -10716,12 +12361,12 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** ** ** Each time the xInput callback is invoked by the sessions module, the first -** argument passed is a copy of the supplied pIn context pointer. The second -** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no -** error occurs the xInput method should copy up to (*pnData) bytes of data -** into the buffer and set (*pnData) to the actual number of bytes copied -** before returning SQLITE_OK. If the input is completely exhausted, (*pnData) -** should be set to zero to indicate this. Or, if an error occurs, an SQLite +** argument passed is a copy of the supplied pIn context pointer. The second +** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no +** error occurs the xInput method should copy up to (*pnData) bytes of data +** into the buffer and set (*pnData) to the actual number of bytes copied +** before returning SQLITE_OK. If the input is completely exhausted, (*pnData) +** should be set to zero to indicate this. Or, if an error occurs, an SQLite ** error code should be returned. In all cases, if an xInput callback returns ** an error, all processing is abandoned and the streaming API function ** returns a copy of the error code to the caller. @@ -10729,7 +12374,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** In the case of sqlite3changeset_start_strm(), the xInput callback may be ** invoked by the sessions module at any point during the lifetime of the ** iterator. If such an xInput callback returns an error, the iterator enters -** an error state, whereby all subsequent calls to iterator functions +** an error state, whereby all subsequent calls to iterator functions ** immediately fail with the same error code as returned by xInput. ** ** Similarly, streaming API functions that return changesets (or patchsets) @@ -10759,7 +12404,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** is immediately abandoned and the streaming API function returns a copy ** of the xOutput error code to the application. ** -** The sessions module never invokes an xOutput callback with the third +** The sessions module never invokes an xOutput callback with the third ** parameter set to a value less than or equal to zero. Other than this, ** no guarantees are made as to the size of the chunks of data returned. */ @@ -10814,6 +12459,12 @@ SQLITE_API int sqlite3changeset_start_strm( int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn ); +SQLITE_API int sqlite3changeset_start_v2_strm( + sqlite3_changeset_iter **pp, + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn, + int flags +); SQLITE_API int sqlite3session_changeset_strm( sqlite3_session *pSession, int (*xOutput)(void *pOut, const void *pData, int nData), @@ -10824,12 +12475,12 @@ SQLITE_API int sqlite3session_patchset_strm( int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ); -SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*, +SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*, int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn ); SQLITE_API int sqlite3changegroup_output_strm(sqlite3_changegroup*, - int (*xOutput)(void *pOut, const void *pData, int nData), + int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ); SQLITE_API int sqlite3rebaser_rebase_strm( @@ -10840,6 +12491,45 @@ SQLITE_API int sqlite3rebaser_rebase_strm( void *pOut ); +/* +** CAPI3REF: Configure global parameters +** +** The sqlite3session_config() interface is used to make global configuration +** changes to the sessions module in order to tune it to the specific needs +** of the application. +** +** The sqlite3session_config() interface is not threadsafe. If it is invoked +** while any other thread is inside any other sessions method then the +** results are undefined. Furthermore, if it is invoked after any sessions +** related objects have been created, the results are also undefined. +** +** The first argument to the sqlite3session_config() function must be one +** of the SQLITE_SESSION_CONFIG_XXX constants defined below. The +** interpretation of the (void*) value passed as the second parameter and +** the effect of calling this function depends on the value of the first +** parameter. +** +**
        +**
        SQLITE_SESSION_CONFIG_STRMSIZE
        +** By default, the sessions module streaming interfaces attempt to input +** and output data in approximately 1 KiB chunks. This operand may be used +** to set and query the value of this configuration setting. The pointer +** passed as the second argument must point to a value of type (int). +** If this value is greater than 0, it is used as the new streaming data +** chunk size for both input and output. Before returning, the (int) value +** pointed to by pArg is set to the final value of the streaming interface +** chunk size. +**
        +** +** This function returns SQLITE_OK if successful, or an SQLite error code +** otherwise. +*/ +SQLITE_API int sqlite3session_config(int op, void *pArg); + +/* +** CAPI3REF: Values for sqlite3session_config(). +*/ +#define SQLITE_SESSION_CONFIG_STRMSIZE 1 /* ** Make sure we can call this stuff from C++. @@ -10864,7 +12554,7 @@ SQLITE_API int sqlite3rebaser_rebase_strm( ** ****************************************************************************** ** -** Interfaces to extend FTS5. Using the interfaces defined in this file, +** Interfaces to extend FTS5. Using the interfaces defined in this file, ** FTS5 may be extended with: ** ** * custom tokenizers, and @@ -10908,19 +12598,19 @@ struct Fts5PhraseIter { ** EXTENSION API FUNCTIONS ** ** xUserData(pFts): -** Return a copy of the context pointer the extension function was +** Return a copy of the context pointer the extension function was ** registered with. ** ** xColumnTotalSize(pFts, iCol, pnToken): ** If parameter iCol is less than zero, set output variable *pnToken ** to the total number of tokens in the FTS5 table. Or, if iCol is ** non-negative but less than the number of columns in the table, return -** the total number of tokens in column iCol, considering all rows in +** the total number of tokens in column iCol, considering all rows in ** the FTS5 table. ** ** If parameter iCol is greater than or equal to the number of columns ** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. -** an OOM condition or IO error), an appropriate SQLite error code is +** an OOM condition or IO error), an appropriate SQLite error code is ** returned. ** ** xColumnCount(pFts): @@ -10934,7 +12624,7 @@ struct Fts5PhraseIter { ** ** If parameter iCol is greater than or equal to the number of columns ** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. -** an OOM condition or IO error), an appropriate SQLite error code is +** an OOM condition or IO error), an appropriate SQLite error code is ** returned. ** ** This function may be quite inefficient if used with an FTS5 table @@ -10961,8 +12651,8 @@ struct Fts5PhraseIter { ** an error code (i.e. SQLITE_NOMEM) if an error occurs. ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. If the FTS5 table is created -** with either "detail=none" or "detail=column" and "content=" option +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option ** (i.e. if it is a contentless table), then this API always returns 0. ** ** xInst: @@ -10973,15 +12663,11 @@ struct Fts5PhraseIter { ** ** Usually, output parameter *piPhrase is set to the phrase number, *piCol ** to the column in which it occurs and *piOff the token offset of the -** first token of the phrase. The exception is if the table was created -** with the offsets=0 option specified. In this case *piOff is always -** set to -1. -** -** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) -** if an error occurs. +** first token of the phrase. Returns SQLITE_OK if successful, or an error +** code (i.e. SQLITE_NOMEM) if an error occurs. ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. +** "detail=none" or "detail=column" option. ** ** xRowid: ** Returns the rowid of the current row. @@ -10997,11 +12683,11 @@ struct Fts5PhraseIter { ** ** with $p set to a phrase equivalent to the phrase iPhrase of the ** current query is executed. Any column filter that applies to -** phrase iPhrase of the current query is included in $p. For each -** row visited, the callback function passed as the fourth argument -** is invoked. The context and API objects passed to the callback +** phrase iPhrase of the current query is included in $p. For each +** row visited, the callback function passed as the fourth argument +** is invoked. The context and API objects passed to the callback ** function may be used to access the properties of each matched row. -** Invoking Api.xUserData() returns a copy of the pointer passed as +** Invoking Api.xUserData() returns a copy of the pointer passed as ** the third argument to pUserData. ** ** If the callback function returns any value other than SQLITE_OK, the @@ -11016,14 +12702,14 @@ struct Fts5PhraseIter { ** ** xSetAuxdata(pFts5, pAux, xDelete) ** -** Save the pointer passed as the second argument as the extension functions +** Save the pointer passed as the second argument as the extension function's ** "auxiliary data". The pointer may then be retrieved by the current or any ** future invocation of the same fts5 extension function made as part of -** of the same MATCH query using the xGetAuxdata() API. +** the same MATCH query using the xGetAuxdata() API. ** ** Each extension function is allocated a single auxiliary data slot for -** each FTS query (MATCH expression). If the extension function is invoked -** more than once for a single FTS query, then all invocations share a +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a ** single auxiliary data context. ** ** If there is already an auxiliary data pointer when this function is @@ -11034,7 +12720,7 @@ struct Fts5PhraseIter { ** The xDelete callback, if one is specified, is also invoked on the ** auxiliary data pointer after the FTS5 query has finished. ** -** If an error (e.g. an OOM condition) occurs within this function, an +** If an error (e.g. an OOM condition) occurs within this function, ** the auxiliary data is set to NULL and an error code returned. If the ** xDelete parameter was not NULL, it is invoked on the auxiliary data ** pointer before returning. @@ -11042,7 +12728,7 @@ struct Fts5PhraseIter { ** ** xGetAuxdata(pFts5, bClear) ** -** Returns the current auxiliary data pointer for the fts5 extension +** Returns the current auxiliary data pointer for the fts5 extension ** function. See the xSetAuxdata() method for details. ** ** If the bClear argument is non-zero, then the auxiliary data is cleared @@ -11062,7 +12748,7 @@ struct Fts5PhraseIter { ** method, to iterate through all instances of a single query phrase within ** the current row. This is the same information as is accessible via the ** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient -** to use, this API may be faster under some circumstances. To iterate +** to use, this API may be faster under some circumstances. To iterate ** through instances of phrase iPhrase, use the following code: ** ** Fts5PhraseIter iter; @@ -11080,8 +12766,8 @@ struct Fts5PhraseIter { ** xPhraseFirstColumn() and xPhraseNextColumn() as illustrated below). ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. If the FTS5 table is created -** with either "detail=none" or "detail=column" and "content=" option +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option ** (i.e. if it is a contentless table), then this API always iterates ** through an empty set (all calls to xPhraseFirst() set iCol to -1). ** @@ -11105,22 +12791,22 @@ struct Fts5PhraseIter { ** } ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" option. If the FTS5 table is created with either -** "detail=none" "content=" option (i.e. if it is a contentless table), -** then this API always iterates through an empty set (all calls to +** "detail=none" option. If the FTS5 table is created with either +** "detail=none" "content=" option (i.e. if it is a contentless table), +** then this API always iterates through an empty set (all calls to ** xPhraseFirstColumn() set iCol to -1). ** ** The information accessed using this API and its companion ** xPhraseFirstColumn() may also be obtained using xPhraseFirst/xPhraseNext ** (or xInst/xInstCount). The chief advantage of this API is that it is ** significantly more efficient than those alternatives when used with -** "detail=column" tables. +** "detail=column" tables. ** ** xPhraseNextColumn() ** See xPhraseFirstColumn above. */ struct Fts5ExtensionApi { - int iVersion; /* Currently always set to 3 */ + int iVersion; /* Currently always set to 2 */ void *(*xUserData)(Fts5Context*); @@ -11128,7 +12814,7 @@ struct Fts5ExtensionApi { int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); - int (*xTokenize)(Fts5Context*, + int (*xTokenize)(Fts5Context*, const char *pText, int nText, /* Text to tokenize */ void *pCtx, /* Context passed to xToken() */ int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ @@ -11157,15 +12843,15 @@ struct Fts5ExtensionApi { void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol); }; -/* +/* ** CUSTOM AUXILIARY FUNCTIONS *************************************************************************/ /************************************************************************* ** CUSTOM TOKENIZERS ** -** Applications may also register custom tokenizer types. A tokenizer -** is registered by providing fts5 with a populated instance of the +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the ** following structure. All structure methods must be defined, setting ** any member of the fts5_tokenizer struct to NULL leads to undefined ** behaviour. The structure methods are expected to function as follows: @@ -11176,16 +12862,16 @@ struct Fts5ExtensionApi { ** ** The first argument passed to this function is a copy of the (void*) ** pointer provided by the application when the fts5_tokenizer object -** was registered with FTS5 (the third argument to xCreateTokenizer()). +** was registered with FTS5 (the third argument to xCreateTokenizer()). ** The second and third arguments are an array of nul-terminated strings ** containing the tokenizer arguments, if any, specified following the ** tokenizer name as part of the CREATE VIRTUAL TABLE statement used ** to create the FTS5 table. ** -** The final argument is an output variable. If successful, (*ppOut) +** The final argument is an output variable. If successful, (*ppOut) ** should be set to point to the new tokenizer handle and SQLITE_OK ** returned. If an error occurs, some value other than SQLITE_OK should -** be returned. In this case, fts5 assumes that the final value of *ppOut +** be returned. In this case, fts5 assumes that the final value of *ppOut ** is undefined. ** ** xDelete: @@ -11194,7 +12880,7 @@ struct Fts5ExtensionApi { ** be invoked exactly once for each successful call to xCreate(). ** ** xTokenize: -** This function is expected to tokenize the nText byte string indicated +** This function is expected to tokenize the nText byte string indicated ** by argument pText. pText may or may not be nul-terminated. The first ** argument passed to this function is a pointer to an Fts5Tokenizer object ** returned by an earlier call to xCreate(). @@ -11208,8 +12894,8 @@ struct Fts5ExtensionApi { ** determine the set of tokens to add to (or delete from) the ** FTS index. ** -**
      4. FTS5_TOKENIZE_QUERY - A MATCH query is being executed -** against the FTS index. The tokenizer is being called to tokenize +**
      5. FTS5_TOKENIZE_QUERY - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize ** a bareword or quoted string specified as part of the query. ** **
      6. (FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX) - Same as @@ -11217,10 +12903,10 @@ struct Fts5ExtensionApi { ** followed by a "*" character, indicating that the last token ** returned by the tokenizer will be treated as a token prefix. ** -**
      7. FTS5_TOKENIZE_AUX - The tokenizer is being invoked to +**
      8. FTS5_TOKENIZE_AUX - The tokenizer is being invoked to ** satisfy an fts5_api.xTokenize() request made by an auxiliary ** function. Or an fts5_api.xColumnSize() request made by the same -** on a columnsize=0 database. +** on a columnsize=0 database. **
    ** ** For each token in the input string, the supplied callback xToken() must @@ -11232,10 +12918,10 @@ struct Fts5ExtensionApi { ** which the token is derived within the input. ** ** The second argument passed to the xToken() callback ("tflags") should -** normally be set to 0. The exception is if the tokenizer supports +** normally be set to 0. The exception is if the tokenizer supports ** synonyms. In this case see the discussion below for details. ** -** FTS5 assumes the xToken() callback is invoked for each token in the +** FTS5 assumes the xToken() callback is invoked for each token in the ** order that they occur within the input text. ** ** If an xToken() callback returns any value other than SQLITE_OK, then @@ -11249,7 +12935,7 @@ struct Fts5ExtensionApi { ** SYNONYM SUPPORT ** ** Custom tokenizers may also support synonyms. Consider a case in which a -** user wishes to query for a phrase such as "first place". Using the +** user wishes to query for a phrase such as "first place". Using the ** built-in tokenizers, the FTS5 query 'first + place' will match instances ** of "first place" within the document set, but not alternative forms ** such as "1st place". In some applications, it would be better to match @@ -11258,8 +12944,8 @@ struct Fts5ExtensionApi { ** ** There are several ways to approach this in FTS5: ** -**
    1. By mapping all synonyms to a single token. In this case, the -** In the above example, this means that the tokenizer returns the +**
      1. By mapping all synonyms to a single token. In this case, using +** the above example, this means that the tokenizer returns the ** same token for inputs "first" and "1st". Say that token is in ** fact "first", so that when the user inserts the document "I won ** 1st place" entries are added to the index for tokens "i", "won", @@ -11267,37 +12953,37 @@ struct Fts5ExtensionApi { ** the tokenizer substitutes "first" for "1st" and the query works ** as expected. ** -**
      2. By adding multiple synonyms for a single term to the FTS index. -** In this case, when tokenizing query text, the tokenizer may -** provide multiple synonyms for a single term within the document. -** FTS5 then queries the index for each synonym individually. For -** example, faced with the query: +**
      3. By querying the index for all synonyms of each query term +** separately. In this case, when tokenizing query text, the +** tokenizer may provide multiple synonyms for a single term +** within the document. FTS5 then queries the index for each +** synonym individually. For example, faced with the query: ** ** ** ... MATCH 'first place' ** ** the tokenizer offers both "1st" and "first" as synonyms for the -** first token in the MATCH query and FTS5 effectively runs a query +** first token in the MATCH query and FTS5 effectively runs a query ** similar to: ** ** ** ... MATCH '(first OR 1st) place' ** ** except that, for the purposes of auxiliary functions, the query -** still appears to contain just two phrases - "(first OR 1st)" +** still appears to contain just two phrases - "(first OR 1st)" ** being treated as a single phrase. ** **
      4. By adding multiple synonyms for a single term to the FTS index. ** Using this method, when tokenizing document text, the tokenizer -** provides multiple synonyms for each token. So that when a +** provides multiple synonyms for each token. So that when a ** document such as "I won first place" is tokenized, entries are ** added to the FTS index for "i", "won", "first", "1st" and ** "place". ** ** This way, even if the tokenizer does not provide synonyms -** when tokenizing query text (it should not - to do would be -** inefficient), it doesn't matter if the user queries for -** 'first + place' or '1st + place', as there are entires in the +** when tokenizing query text (it should not - to do so would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entries in the ** FTS index corresponding to both forms of the first token. **
      ** @@ -11317,15 +13003,15 @@ struct Fts5ExtensionApi { ** ** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time ** xToken() is called. Multiple synonyms may be specified for a single token -** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. ** There is no limit to the number of synonyms that may be provided for a ** single token. ** -** In many cases, method (1) above is the best approach. It does not add +** In many cases, method (1) above is the best approach. It does not add ** extra data to the FTS index or require FTS5 to query for multiple terms, ** so it is efficient in terms of disk space and query speed. However, it ** does not support prefix queries very well. If, as suggested above, the -** token "first" is subsituted for "1st" by the tokenizer, then the query: +** token "first" is substituted for "1st" by the tokenizer, then the query: ** ** ** ... MATCH '1s*' @@ -11333,24 +13019,24 @@ struct Fts5ExtensionApi { ** will not match documents that contain the token "1st" (as the tokenizer ** will probably not map "1s" to any prefix of "first"). ** -** For full prefix support, method (3) may be preferred. In this case, +** For full prefix support, method (3) may be preferred. In this case, ** because the index contains entries for both "first" and "1st", prefix ** queries such as 'fi*' or '1s*' will match correctly. However, because ** extra entries are added to the FTS index, this method uses more space ** within the database. ** ** Method (2) offers a midpoint between (1) and (3). Using this method, -** a query such as '1s*' will match documents that contain the literal +** a query such as '1s*' will match documents that contain the literal ** token "1st", but not "first" (assuming the tokenizer is not able to ** provide synonyms for prefixes). However, a non-prefix query like '1st' ** will match against "1st" and "first". This method does not require -** extra disk space, as no extra entries are added to the FTS index. +** extra disk space, as no extra entries are added to the FTS index. ** On the other hand, it may require more CPU cycles to run MATCH queries, ** as separate queries of the FTS index are required for each synonym. ** ** When using methods (2) or (3), it is important that the tokenizer only -** provide synonyms when tokenizing document text (method (2)) or query -** text (method (3)), not both. Doing so will not cause any errors, but is +** provide synonyms when tokenizing document text (method (3)) or query +** text (method (2)), not both. Doing so will not cause any errors, but is ** inefficient. */ typedef struct Fts5Tokenizer Fts5Tokenizer; @@ -11358,10 +13044,10 @@ typedef struct fts5_tokenizer fts5_tokenizer; struct fts5_tokenizer { int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); void (*xDelete)(Fts5Tokenizer*); - int (*xTokenize)(Fts5Tokenizer*, + int (*xTokenize)(Fts5Tokenizer*, void *pCtx, int flags, /* Mask of FTS5_TOKENIZE_* flags */ - const char *pText, int nText, + const char *pText, int nText, int (*xToken)( void *pCtx, /* Copy of 2nd argument to xTokenize() */ int tflags, /* Mask of FTS5_TOKEN_* flags */ @@ -11398,7 +13084,7 @@ struct fts5_api { int (*xCreateTokenizer)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_tokenizer *pTokenizer, void (*xDestroy)(void*) ); @@ -11407,7 +13093,7 @@ struct fts5_api { int (*xFindTokenizer)( fts5_api *pApi, const char *zName, - void **ppContext, + void **ppUserData, fts5_tokenizer *pTokenizer ); @@ -11415,7 +13101,7 @@ struct fts5_api { int (*xCreateFunction)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_extension_function xFunction, void (*xDestroy)(void*) ); diff --git a/vendor/sqlite/src/sqlite3.c b/vendor/sqlite/src/sqlite3.c index ce4f343fd..310583f99 100644 --- a/vendor/sqlite/src/sqlite3.c +++ b/vendor/sqlite/src/sqlite3.c @@ -1,6 +1,6 @@ /****************************************************************************** ** This file is an amalgamation of many separate C source files from SQLite -** version 3.24.0. By combining all the individual C code files into this +** version 3.43.0. By combining all the individual C code files into this ** single large file, the entire code can be compiled as a single translation ** unit. This allows many compilers to do optimizations that would not be ** possible if the files were compiled separately. Performance improvements @@ -16,770 +16,15 @@ ** if you want a wrapper to interface SQLite with your choice of programming ** language. The code for the "sqlite3" command-line shell is also in a ** separate file. This file contains only code for the core SQLite library. +** +** The content in this amalgamation comes from Fossil check-in +** f80b798b3f4b81a7bb4233c58294edd0f11. */ #define SQLITE_CORE 1 #define SQLITE_AMALGAMATION 1 #ifndef SQLITE_PRIVATE # define SQLITE_PRIVATE static #endif -/************** Begin file ctime.c *******************************************/ -/* -** 2010 February 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file implements routines used to report what compile-time options -** SQLite was built with. -*/ - -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - -/* -** Include the configuration header output by 'configure' if we're using the -** autoconf-based build -*/ -#if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H) -#include "config.h" -#define SQLITECONFIG_H 1 -#endif - -/* These macros are provided to "stringify" the value of the define -** for those options in which the value is meaningful. */ -#define CTIMEOPT_VAL_(opt) #opt -#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt) - -/* -** An array of names of all compile-time options. This array should -** be sorted A-Z. -** -** This array looks large, but in a typical installation actually uses -** only a handful of compile-time options, so most times this array is usually -** rather short and uses little memory space. -*/ -static const char * const sqlite3azCompileOpt[] = { - -/* -** BEGIN CODE GENERATED BY tool/mkctime.tcl -*/ -#if SQLITE_32BIT_ROWID - "32BIT_ROWID", -#endif -#if SQLITE_4_BYTE_ALIGNED_MALLOC - "4_BYTE_ALIGNED_MALLOC", -#endif -#if SQLITE_64BIT_STATS - "64BIT_STATS", -#endif -#if SQLITE_ALLOW_COVERING_INDEX_SCAN - "ALLOW_COVERING_INDEX_SCAN", -#endif -#if SQLITE_ALLOW_URI_AUTHORITY - "ALLOW_URI_AUTHORITY", -#endif -#ifdef SQLITE_BITMASK_TYPE - "BITMASK_TYPE=" CTIMEOPT_VAL(SQLITE_BITMASK_TYPE), -#endif -#if SQLITE_BUG_COMPATIBLE_20160819 - "BUG_COMPATIBLE_20160819", -#endif -#if SQLITE_CASE_SENSITIVE_LIKE - "CASE_SENSITIVE_LIKE", -#endif -#if SQLITE_CHECK_PAGES - "CHECK_PAGES", -#endif -#if defined(__clang__) && defined(__clang_major__) - "COMPILER=clang-" CTIMEOPT_VAL(__clang_major__) "." - CTIMEOPT_VAL(__clang_minor__) "." - CTIMEOPT_VAL(__clang_patchlevel__), -#elif defined(_MSC_VER) - "COMPILER=msvc-" CTIMEOPT_VAL(_MSC_VER), -#elif defined(__GNUC__) && defined(__VERSION__) - "COMPILER=gcc-" __VERSION__, -#endif -#if SQLITE_COVERAGE_TEST - "COVERAGE_TEST", -#endif -#if SQLITE_DEBUG - "DEBUG", -#endif -#if SQLITE_DEFAULT_AUTOMATIC_INDEX - "DEFAULT_AUTOMATIC_INDEX", -#endif -#if SQLITE_DEFAULT_AUTOVACUUM - "DEFAULT_AUTOVACUUM", -#endif -#ifdef SQLITE_DEFAULT_CACHE_SIZE - "DEFAULT_CACHE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_CACHE_SIZE), -#endif -#if SQLITE_DEFAULT_CKPTFULLFSYNC - "DEFAULT_CKPTFULLFSYNC", -#endif -#ifdef SQLITE_DEFAULT_FILE_FORMAT - "DEFAULT_FILE_FORMAT=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_FORMAT), -#endif -#ifdef SQLITE_DEFAULT_FILE_PERMISSIONS - "DEFAULT_FILE_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_PERMISSIONS), -#endif -#if SQLITE_DEFAULT_FOREIGN_KEYS - "DEFAULT_FOREIGN_KEYS", -#endif -#ifdef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT - "DEFAULT_JOURNAL_SIZE_LIMIT=" CTIMEOPT_VAL(SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT), -#endif -#ifdef SQLITE_DEFAULT_LOCKING_MODE - "DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE), -#endif -#ifdef SQLITE_DEFAULT_LOOKASIDE - "DEFAULT_LOOKASIDE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOOKASIDE), -#endif -#if SQLITE_DEFAULT_MEMSTATUS - "DEFAULT_MEMSTATUS", -#endif -#ifdef SQLITE_DEFAULT_MMAP_SIZE - "DEFAULT_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_MMAP_SIZE), -#endif -#ifdef SQLITE_DEFAULT_PAGE_SIZE - "DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_PAGE_SIZE), -#endif -#ifdef SQLITE_DEFAULT_PCACHE_INITSZ - "DEFAULT_PCACHE_INITSZ=" CTIMEOPT_VAL(SQLITE_DEFAULT_PCACHE_INITSZ), -#endif -#ifdef SQLITE_DEFAULT_PROXYDIR_PERMISSIONS - "DEFAULT_PROXYDIR_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_PROXYDIR_PERMISSIONS), -#endif -#if SQLITE_DEFAULT_RECURSIVE_TRIGGERS - "DEFAULT_RECURSIVE_TRIGGERS", -#endif -#ifdef SQLITE_DEFAULT_ROWEST - "DEFAULT_ROWEST=" CTIMEOPT_VAL(SQLITE_DEFAULT_ROWEST), -#endif -#ifdef SQLITE_DEFAULT_SECTOR_SIZE - "DEFAULT_SECTOR_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_SECTOR_SIZE), -#endif -#ifdef SQLITE_DEFAULT_SYNCHRONOUS - "DEFAULT_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_SYNCHRONOUS), -#endif -#ifdef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT - "DEFAULT_WAL_AUTOCHECKPOINT=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_AUTOCHECKPOINT), -#endif -#ifdef SQLITE_DEFAULT_WAL_SYNCHRONOUS - "DEFAULT_WAL_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_SYNCHRONOUS), -#endif -#ifdef SQLITE_DEFAULT_WORKER_THREADS - "DEFAULT_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WORKER_THREADS), -#endif -#if SQLITE_DIRECT_OVERFLOW_READ - "DIRECT_OVERFLOW_READ", -#endif -#if SQLITE_DISABLE_DIRSYNC - "DISABLE_DIRSYNC", -#endif -#if SQLITE_DISABLE_FTS3_UNICODE - "DISABLE_FTS3_UNICODE", -#endif -#if SQLITE_DISABLE_FTS4_DEFERRED - "DISABLE_FTS4_DEFERRED", -#endif -#if SQLITE_DISABLE_INTRINSIC - "DISABLE_INTRINSIC", -#endif -#if SQLITE_DISABLE_LFS - "DISABLE_LFS", -#endif -#if SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS - "DISABLE_PAGECACHE_OVERFLOW_STATS", -#endif -#if SQLITE_DISABLE_SKIPAHEAD_DISTINCT - "DISABLE_SKIPAHEAD_DISTINCT", -#endif -#ifdef SQLITE_ENABLE_8_3_NAMES - "ENABLE_8_3_NAMES=" CTIMEOPT_VAL(SQLITE_ENABLE_8_3_NAMES), -#endif -#if SQLITE_ENABLE_API_ARMOR - "ENABLE_API_ARMOR", -#endif -#if SQLITE_ENABLE_ATOMIC_WRITE - "ENABLE_ATOMIC_WRITE", -#endif -#if SQLITE_ENABLE_BATCH_ATOMIC_WRITE - "ENABLE_BATCH_ATOMIC_WRITE", -#endif -#if SQLITE_ENABLE_CEROD - "ENABLE_CEROD=" CTIMEOPT_VAL(SQLITE_ENABLE_CEROD), -#endif -#if SQLITE_ENABLE_COLUMN_METADATA - "ENABLE_COLUMN_METADATA", -#endif -#if SQLITE_ENABLE_COLUMN_USED_MASK - "ENABLE_COLUMN_USED_MASK", -#endif -#if SQLITE_ENABLE_COSTMULT - "ENABLE_COSTMULT", -#endif -#if SQLITE_ENABLE_CURSOR_HINTS - "ENABLE_CURSOR_HINTS", -#endif -#if SQLITE_ENABLE_DBSTAT_VTAB - "ENABLE_DBSTAT_VTAB", -#endif -#if SQLITE_ENABLE_EXPENSIVE_ASSERT - "ENABLE_EXPENSIVE_ASSERT", -#endif -#if SQLITE_ENABLE_FTS1 - "ENABLE_FTS1", -#endif -#if SQLITE_ENABLE_FTS2 - "ENABLE_FTS2", -#endif -#if SQLITE_ENABLE_FTS3 - "ENABLE_FTS3", -#endif -#if SQLITE_ENABLE_FTS3_PARENTHESIS - "ENABLE_FTS3_PARENTHESIS", -#endif -#if SQLITE_ENABLE_FTS3_TOKENIZER - "ENABLE_FTS3_TOKENIZER", -#endif -#if SQLITE_ENABLE_FTS4 - "ENABLE_FTS4", -#endif -#if SQLITE_ENABLE_FTS5 - "ENABLE_FTS5", -#endif -#if SQLITE_ENABLE_HIDDEN_COLUMNS - "ENABLE_HIDDEN_COLUMNS", -#endif -#if SQLITE_ENABLE_ICU - "ENABLE_ICU", -#endif -#if SQLITE_ENABLE_IOTRACE - "ENABLE_IOTRACE", -#endif -#if SQLITE_ENABLE_JSON1 - "ENABLE_JSON1", -#endif -#if SQLITE_ENABLE_LOAD_EXTENSION - "ENABLE_LOAD_EXTENSION", -#endif -#ifdef SQLITE_ENABLE_LOCKING_STYLE - "ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE), -#endif -#if SQLITE_ENABLE_MEMORY_MANAGEMENT - "ENABLE_MEMORY_MANAGEMENT", -#endif -#if SQLITE_ENABLE_MEMSYS3 - "ENABLE_MEMSYS3", -#endif -#if SQLITE_ENABLE_MEMSYS5 - "ENABLE_MEMSYS5", -#endif -#if SQLITE_ENABLE_MULTIPLEX - "ENABLE_MULTIPLEX", -#endif -#if SQLITE_ENABLE_NULL_TRIM - "ENABLE_NULL_TRIM", -#endif -#if SQLITE_ENABLE_OVERSIZE_CELL_CHECK - "ENABLE_OVERSIZE_CELL_CHECK", -#endif -#if SQLITE_ENABLE_PREUPDATE_HOOK - "ENABLE_PREUPDATE_HOOK", -#endif -#if SQLITE_ENABLE_QPSG - "ENABLE_QPSG", -#endif -#if SQLITE_ENABLE_RBU - "ENABLE_RBU", -#endif -#if SQLITE_ENABLE_RTREE - "ENABLE_RTREE", -#endif -#if SQLITE_ENABLE_SELECTTRACE - "ENABLE_SELECTTRACE", -#endif -#if SQLITE_ENABLE_SESSION - "ENABLE_SESSION", -#endif -#if SQLITE_ENABLE_SNAPSHOT - "ENABLE_SNAPSHOT", -#endif -#if SQLITE_ENABLE_SORTER_REFERENCES - "ENABLE_SORTER_REFERENCES", -#endif -#if SQLITE_ENABLE_SQLLOG - "ENABLE_SQLLOG", -#endif -#if defined(SQLITE_ENABLE_STAT4) - "ENABLE_STAT4", -#elif defined(SQLITE_ENABLE_STAT3) - "ENABLE_STAT3", -#endif -#if SQLITE_ENABLE_STMTVTAB - "ENABLE_STMTVTAB", -#endif -#if SQLITE_ENABLE_STMT_SCANSTATUS - "ENABLE_STMT_SCANSTATUS", -#endif -#if SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION - "ENABLE_UNKNOWN_SQL_FUNCTION", -#endif -#if SQLITE_ENABLE_UNLOCK_NOTIFY - "ENABLE_UNLOCK_NOTIFY", -#endif -#if SQLITE_ENABLE_UPDATE_DELETE_LIMIT - "ENABLE_UPDATE_DELETE_LIMIT", -#endif -#if SQLITE_ENABLE_URI_00_ERROR - "ENABLE_URI_00_ERROR", -#endif -#if SQLITE_ENABLE_VFSTRACE - "ENABLE_VFSTRACE", -#endif -#if SQLITE_ENABLE_WHERETRACE - "ENABLE_WHERETRACE", -#endif -#if SQLITE_ENABLE_ZIPVFS - "ENABLE_ZIPVFS", -#endif -#if SQLITE_EXPLAIN_ESTIMATED_ROWS - "EXPLAIN_ESTIMATED_ROWS", -#endif -#if SQLITE_EXTRA_IFNULLROW - "EXTRA_IFNULLROW", -#endif -#ifdef SQLITE_EXTRA_INIT - "EXTRA_INIT=" CTIMEOPT_VAL(SQLITE_EXTRA_INIT), -#endif -#ifdef SQLITE_EXTRA_SHUTDOWN - "EXTRA_SHUTDOWN=" CTIMEOPT_VAL(SQLITE_EXTRA_SHUTDOWN), -#endif -#ifdef SQLITE_FTS3_MAX_EXPR_DEPTH - "FTS3_MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_FTS3_MAX_EXPR_DEPTH), -#endif -#if SQLITE_FTS5_ENABLE_TEST_MI - "FTS5_ENABLE_TEST_MI", -#endif -#if SQLITE_FTS5_NO_WITHOUT_ROWID - "FTS5_NO_WITHOUT_ROWID", -#endif -#if SQLITE_HAS_CODEC - "HAS_CODEC", -#endif -#if HAVE_ISNAN || SQLITE_HAVE_ISNAN - "HAVE_ISNAN", -#endif -#if SQLITE_HOMEGROWN_RECURSIVE_MUTEX - "HOMEGROWN_RECURSIVE_MUTEX", -#endif -#if SQLITE_IGNORE_AFP_LOCK_ERRORS - "IGNORE_AFP_LOCK_ERRORS", -#endif -#if SQLITE_IGNORE_FLOCK_LOCK_ERRORS - "IGNORE_FLOCK_LOCK_ERRORS", -#endif -#if SQLITE_INLINE_MEMCPY - "INLINE_MEMCPY", -#endif -#if SQLITE_INT64_TYPE - "INT64_TYPE", -#endif -#ifdef SQLITE_INTEGRITY_CHECK_ERROR_MAX - "INTEGRITY_CHECK_ERROR_MAX=" CTIMEOPT_VAL(SQLITE_INTEGRITY_CHECK_ERROR_MAX), -#endif -#if SQLITE_LIKE_DOESNT_MATCH_BLOBS - "LIKE_DOESNT_MATCH_BLOBS", -#endif -#if SQLITE_LOCK_TRACE - "LOCK_TRACE", -#endif -#if SQLITE_LOG_CACHE_SPILL - "LOG_CACHE_SPILL", -#endif -#ifdef SQLITE_MALLOC_SOFT_LIMIT - "MALLOC_SOFT_LIMIT=" CTIMEOPT_VAL(SQLITE_MALLOC_SOFT_LIMIT), -#endif -#ifdef SQLITE_MAX_ATTACHED - "MAX_ATTACHED=" CTIMEOPT_VAL(SQLITE_MAX_ATTACHED), -#endif -#ifdef SQLITE_MAX_COLUMN - "MAX_COLUMN=" CTIMEOPT_VAL(SQLITE_MAX_COLUMN), -#endif -#ifdef SQLITE_MAX_COMPOUND_SELECT - "MAX_COMPOUND_SELECT=" CTIMEOPT_VAL(SQLITE_MAX_COMPOUND_SELECT), -#endif -#ifdef SQLITE_MAX_DEFAULT_PAGE_SIZE - "MAX_DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_DEFAULT_PAGE_SIZE), -#endif -#ifdef SQLITE_MAX_EXPR_DEPTH - "MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_EXPR_DEPTH), -#endif -#ifdef SQLITE_MAX_FUNCTION_ARG - "MAX_FUNCTION_ARG=" CTIMEOPT_VAL(SQLITE_MAX_FUNCTION_ARG), -#endif -#ifdef SQLITE_MAX_LENGTH - "MAX_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LENGTH), -#endif -#ifdef SQLITE_MAX_LIKE_PATTERN_LENGTH - "MAX_LIKE_PATTERN_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LIKE_PATTERN_LENGTH), -#endif -#ifdef SQLITE_MAX_MEMORY - "MAX_MEMORY=" CTIMEOPT_VAL(SQLITE_MAX_MEMORY), -#endif -#ifdef SQLITE_MAX_MMAP_SIZE - "MAX_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE), -#endif -#ifdef SQLITE_MAX_MMAP_SIZE_ - "MAX_MMAP_SIZE_=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE_), -#endif -#ifdef SQLITE_MAX_PAGE_COUNT - "MAX_PAGE_COUNT=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_COUNT), -#endif -#ifdef SQLITE_MAX_PAGE_SIZE - "MAX_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_SIZE), -#endif -#ifdef SQLITE_MAX_SCHEMA_RETRY - "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY), -#endif -#ifdef SQLITE_MAX_SQL_LENGTH - "MAX_SQL_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_SQL_LENGTH), -#endif -#ifdef SQLITE_MAX_TRIGGER_DEPTH - "MAX_TRIGGER_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_TRIGGER_DEPTH), -#endif -#ifdef SQLITE_MAX_VARIABLE_NUMBER - "MAX_VARIABLE_NUMBER=" CTIMEOPT_VAL(SQLITE_MAX_VARIABLE_NUMBER), -#endif -#ifdef SQLITE_MAX_VDBE_OP - "MAX_VDBE_OP=" CTIMEOPT_VAL(SQLITE_MAX_VDBE_OP), -#endif -#ifdef SQLITE_MAX_WORKER_THREADS - "MAX_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_MAX_WORKER_THREADS), -#endif -#if SQLITE_MEMDEBUG - "MEMDEBUG", -#endif -#if SQLITE_MIXED_ENDIAN_64BIT_FLOAT - "MIXED_ENDIAN_64BIT_FLOAT", -#endif -#if SQLITE_MMAP_READWRITE - "MMAP_READWRITE", -#endif -#if SQLITE_MUTEX_NOOP - "MUTEX_NOOP", -#endif -#if SQLITE_MUTEX_NREF - "MUTEX_NREF", -#endif -#if SQLITE_MUTEX_OMIT - "MUTEX_OMIT", -#endif -#if SQLITE_MUTEX_PTHREADS - "MUTEX_PTHREADS", -#endif -#if SQLITE_MUTEX_W32 - "MUTEX_W32", -#endif -#if SQLITE_NEED_ERR_NAME - "NEED_ERR_NAME", -#endif -#if SQLITE_NOINLINE - "NOINLINE", -#endif -#if SQLITE_NO_SYNC - "NO_SYNC", -#endif -#if SQLITE_OMIT_ALTERTABLE - "OMIT_ALTERTABLE", -#endif -#if SQLITE_OMIT_ANALYZE - "OMIT_ANALYZE", -#endif -#if SQLITE_OMIT_ATTACH - "OMIT_ATTACH", -#endif -#if SQLITE_OMIT_AUTHORIZATION - "OMIT_AUTHORIZATION", -#endif -#if SQLITE_OMIT_AUTOINCREMENT - "OMIT_AUTOINCREMENT", -#endif -#if SQLITE_OMIT_AUTOINIT - "OMIT_AUTOINIT", -#endif -#if SQLITE_OMIT_AUTOMATIC_INDEX - "OMIT_AUTOMATIC_INDEX", -#endif -#if SQLITE_OMIT_AUTORESET - "OMIT_AUTORESET", -#endif -#if SQLITE_OMIT_AUTOVACUUM - "OMIT_AUTOVACUUM", -#endif -#if SQLITE_OMIT_BETWEEN_OPTIMIZATION - "OMIT_BETWEEN_OPTIMIZATION", -#endif -#if SQLITE_OMIT_BLOB_LITERAL - "OMIT_BLOB_LITERAL", -#endif -#if SQLITE_OMIT_BTREECOUNT - "OMIT_BTREECOUNT", -#endif -#if SQLITE_OMIT_CAST - "OMIT_CAST", -#endif -#if SQLITE_OMIT_CHECK - "OMIT_CHECK", -#endif -#if SQLITE_OMIT_COMPLETE - "OMIT_COMPLETE", -#endif -#if SQLITE_OMIT_COMPOUND_SELECT - "OMIT_COMPOUND_SELECT", -#endif -#if SQLITE_OMIT_CONFLICT_CLAUSE - "OMIT_CONFLICT_CLAUSE", -#endif -#if SQLITE_OMIT_CTE - "OMIT_CTE", -#endif -#if SQLITE_OMIT_DATETIME_FUNCS - "OMIT_DATETIME_FUNCS", -#endif -#if SQLITE_OMIT_DECLTYPE - "OMIT_DECLTYPE", -#endif -#if SQLITE_OMIT_DEPRECATED - "OMIT_DEPRECATED", -#endif -#if SQLITE_OMIT_DISKIO - "OMIT_DISKIO", -#endif -#if SQLITE_OMIT_EXPLAIN - "OMIT_EXPLAIN", -#endif -#if SQLITE_OMIT_FLAG_PRAGMAS - "OMIT_FLAG_PRAGMAS", -#endif -#if SQLITE_OMIT_FLOATING_POINT - "OMIT_FLOATING_POINT", -#endif -#if SQLITE_OMIT_FOREIGN_KEY - "OMIT_FOREIGN_KEY", -#endif -#if SQLITE_OMIT_GET_TABLE - "OMIT_GET_TABLE", -#endif -#if SQLITE_OMIT_HEX_INTEGER - "OMIT_HEX_INTEGER", -#endif -#if SQLITE_OMIT_INCRBLOB - "OMIT_INCRBLOB", -#endif -#if SQLITE_OMIT_INTEGRITY_CHECK - "OMIT_INTEGRITY_CHECK", -#endif -#if SQLITE_OMIT_LIKE_OPTIMIZATION - "OMIT_LIKE_OPTIMIZATION", -#endif -#if SQLITE_OMIT_LOAD_EXTENSION - "OMIT_LOAD_EXTENSION", -#endif -#if SQLITE_OMIT_LOCALTIME - "OMIT_LOCALTIME", -#endif -#if SQLITE_OMIT_LOOKASIDE - "OMIT_LOOKASIDE", -#endif -#if SQLITE_OMIT_MEMORYDB - "OMIT_MEMORYDB", -#endif -#if SQLITE_OMIT_OR_OPTIMIZATION - "OMIT_OR_OPTIMIZATION", -#endif -#if SQLITE_OMIT_PAGER_PRAGMAS - "OMIT_PAGER_PRAGMAS", -#endif -#if SQLITE_OMIT_PARSER_TRACE - "OMIT_PARSER_TRACE", -#endif -#if SQLITE_OMIT_POPEN - "OMIT_POPEN", -#endif -#if SQLITE_OMIT_PRAGMA - "OMIT_PRAGMA", -#endif -#if SQLITE_OMIT_PROGRESS_CALLBACK - "OMIT_PROGRESS_CALLBACK", -#endif -#if SQLITE_OMIT_QUICKBALANCE - "OMIT_QUICKBALANCE", -#endif -#if SQLITE_OMIT_REINDEX - "OMIT_REINDEX", -#endif -#if SQLITE_OMIT_SCHEMA_PRAGMAS - "OMIT_SCHEMA_PRAGMAS", -#endif -#if SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS - "OMIT_SCHEMA_VERSION_PRAGMAS", -#endif -#if SQLITE_OMIT_SHARED_CACHE - "OMIT_SHARED_CACHE", -#endif -#if SQLITE_OMIT_SHUTDOWN_DIRECTORIES - "OMIT_SHUTDOWN_DIRECTORIES", -#endif -#if SQLITE_OMIT_SUBQUERY - "OMIT_SUBQUERY", -#endif -#if SQLITE_OMIT_TCL_VARIABLE - "OMIT_TCL_VARIABLE", -#endif -#if SQLITE_OMIT_TEMPDB - "OMIT_TEMPDB", -#endif -#if SQLITE_OMIT_TEST_CONTROL - "OMIT_TEST_CONTROL", -#endif -#if SQLITE_OMIT_TRACE - "OMIT_TRACE", -#endif -#if SQLITE_OMIT_TRIGGER - "OMIT_TRIGGER", -#endif -#if SQLITE_OMIT_TRUNCATE_OPTIMIZATION - "OMIT_TRUNCATE_OPTIMIZATION", -#endif -#if SQLITE_OMIT_UTF16 - "OMIT_UTF16", -#endif -#if SQLITE_OMIT_VACUUM - "OMIT_VACUUM", -#endif -#if SQLITE_OMIT_VIEW - "OMIT_VIEW", -#endif -#if SQLITE_OMIT_VIRTUALTABLE - "OMIT_VIRTUALTABLE", -#endif -#if SQLITE_OMIT_WAL - "OMIT_WAL", -#endif -#if SQLITE_OMIT_WSD - "OMIT_WSD", -#endif -#if SQLITE_OMIT_XFER_OPT - "OMIT_XFER_OPT", -#endif -#if SQLITE_PCACHE_SEPARATE_HEADER - "PCACHE_SEPARATE_HEADER", -#endif -#if SQLITE_PERFORMANCE_TRACE - "PERFORMANCE_TRACE", -#endif -#if SQLITE_POWERSAFE_OVERWRITE - "POWERSAFE_OVERWRITE", -#endif -#if SQLITE_PREFER_PROXY_LOCKING - "PREFER_PROXY_LOCKING", -#endif -#if SQLITE_PROXY_DEBUG - "PROXY_DEBUG", -#endif -#if SQLITE_REVERSE_UNORDERED_SELECTS - "REVERSE_UNORDERED_SELECTS", -#endif -#if SQLITE_RTREE_INT_ONLY - "RTREE_INT_ONLY", -#endif -#if SQLITE_SECURE_DELETE - "SECURE_DELETE", -#endif -#if SQLITE_SMALL_STACK - "SMALL_STACK", -#endif -#ifdef SQLITE_SORTER_PMASZ - "SORTER_PMASZ=" CTIMEOPT_VAL(SQLITE_SORTER_PMASZ), -#endif -#if SQLITE_SOUNDEX - "SOUNDEX", -#endif -#ifdef SQLITE_STAT4_SAMPLES - "STAT4_SAMPLES=" CTIMEOPT_VAL(SQLITE_STAT4_SAMPLES), -#endif -#ifdef SQLITE_STMTJRNL_SPILL - "STMTJRNL_SPILL=" CTIMEOPT_VAL(SQLITE_STMTJRNL_SPILL), -#endif -#if SQLITE_SUBSTR_COMPATIBILITY - "SUBSTR_COMPATIBILITY", -#endif -#if SQLITE_SYSTEM_MALLOC - "SYSTEM_MALLOC", -#endif -#if SQLITE_TCL - "TCL", -#endif -#ifdef SQLITE_TEMP_STORE - "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE), -#endif -#if SQLITE_TEST - "TEST", -#endif -#if defined(SQLITE_THREADSAFE) - "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE), -#elif defined(THREADSAFE) - "THREADSAFE=" CTIMEOPT_VAL(THREADSAFE), -#else - "THREADSAFE=1", -#endif -#if SQLITE_UNLINK_AFTER_CLOSE - "UNLINK_AFTER_CLOSE", -#endif -#if SQLITE_UNTESTABLE - "UNTESTABLE", -#endif -#if SQLITE_USER_AUTHENTICATION - "USER_AUTHENTICATION", -#endif -#if SQLITE_USE_ALLOCA - "USE_ALLOCA", -#endif -#if SQLITE_USE_FCNTL_TRACE - "USE_FCNTL_TRACE", -#endif -#if SQLITE_USE_URI - "USE_URI", -#endif -#if SQLITE_VDBE_COVERAGE - "VDBE_COVERAGE", -#endif -#if SQLITE_WIN32_MALLOC - "WIN32_MALLOC", -#endif -#if SQLITE_ZERO_MALLOC - "ZERO_MALLOC", -#endif -/* -** END CODE GENERATED BY tool/mkctime.tcl -*/ -}; - -SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ - *pnOpt = sizeof(sqlite3azCompileOpt) / sizeof(sqlite3azCompileOpt[0]); - return (const char**)sqlite3azCompileOpt; -} - -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - -/************** End of ctime.c ***********************************************/ /************** Begin file sqliteInt.h ***************************************/ /* ** 2001 September 15 @@ -808,20 +53,20 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ ** used on lines of code that actually ** implement parts of coverage testing. ** -** OPTIMIZATION-IF-TRUE - This branch is allowed to alway be false +** OPTIMIZATION-IF-TRUE - This branch is allowed to always be false ** and the correct answer is still obtained, ** though perhaps more slowly. ** -** OPTIMIZATION-IF-FALSE - This branch is allowed to alway be true +** OPTIMIZATION-IF-FALSE - This branch is allowed to always be true ** and the correct answer is still obtained, ** though perhaps more slowly. ** ** PREVENTS-HARMLESS-OVERREAD - This branch prevents a buffer overread ** that would be harmless and undetectable -** if it did occur. +** if it did occur. ** ** In all cases, the special comment must be enclosed in the usual -** slash-asterisk...asterisk-slash comment marks, with no spaces between the +** slash-asterisk...asterisk-slash comment marks, with no spaces between the ** asterisks and the comment text. */ @@ -876,6 +121,15 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ #pragma warning(disable : 4706) #endif /* defined(_MSC_VER) */ +#if defined(_MSC_VER) && !defined(_WIN64) +#undef SQLITE_4_BYTE_ALIGNED_MALLOC +#define SQLITE_4_BYTE_ALIGNED_MALLOC +#endif /* defined(_MSC_VER) && !defined(_WIN64) */ + +#if !defined(HAVE_LOG2) && defined(_MSC_VER) && _MSC_VER<1800 +#define HAVE_LOG2 0 +#endif /* !defined(HAVE_LOG2) && defined(_MSC_VER) && _MSC_VER<1800 */ + #endif /* SQLITE_MSVC_H */ /************** End of msvc.h ************************************************/ @@ -978,6 +232,18 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ # define MSVC_VERSION 0 #endif +/* +** Some C99 functions in "math.h" are only present for MSVC when its version +** is associated with Visual Studio 2013 or higher. +*/ +#ifndef SQLITE_HAVE_C99_MATH_FUNCS +# if MSVC_VERSION==0 || MSVC_VERSION>=1800 +# define SQLITE_HAVE_C99_MATH_FUNCS (1) +# else +# define SQLITE_HAVE_C99_MATH_FUNCS (0) +# endif +#endif + /* Needed for various definitions... */ #if defined(__GNUC__) && !defined(_GNU_SOURCE) # define _GNU_SOURCE @@ -987,6 +253,15 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ # define _BSD_SOURCE #endif +/* +** Macro to disable warnings about missing "break" at the end of a "case". +*/ +#if GCC_VERSION>=7000000 +# define deliberate_fall_through __attribute__((fallthrough)); +#else +# define deliberate_fall_through +#endif + /* ** For MinGW, check to see if we can include the header file containing its ** version information, among other things. Normally, this internal MinGW @@ -1019,6 +294,17 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ # define _USE_32BIT_TIME_T #endif +/* Optionally #include a user-defined header, whereby compilation options +** may be set prior to where they take effect, but after platform setup. +** If SQLITE_CUSTOM_INCLUDE=? is defined, its value names the #include +** file. +*/ +#ifdef SQLITE_CUSTOM_INCLUDE +# define INC_STRINGIFY_(f) #f +# define INC_STRINGIFY(f) INC_STRINGIFY_(f) +# include INC_STRINGIFY(SQLITE_CUSTOM_INCLUDE) +#endif + /* The public SQLite interface. The _FILE_OFFSET_BITS macro must appear ** first in QNX. Also, the _USE_32BIT_TIME_T macro must appear first for ** MinGW. @@ -1070,7 +356,30 @@ extern "C" { /* -** Provide the ability to override linkage features of the interface. +** Facilitate override of interface linkage and calling conventions. +** Be aware that these macros may not be used within this particular +** translation of the amalgamation and its associated header file. +** +** The SQLITE_EXTERN and SQLITE_API macros are used to instruct the +** compiler that the target identifier should have external linkage. +** +** The SQLITE_CDECL macro is used to set the calling convention for +** public functions that accept a variable number of arguments. +** +** The SQLITE_APICALL macro is used to set the calling convention for +** public functions that accept a fixed number of arguments. +** +** The SQLITE_STDCALL macro is no longer used and is now deprecated. +** +** The SQLITE_CALLBACK macro is used to set the calling convention for +** function pointers. +** +** The SQLITE_SYSAPI macro is used to set the calling convention for +** functions provided by the operating system. +** +** Currently, the SQLITE_CDECL, SQLITE_APICALL, SQLITE_CALLBACK, and +** SQLITE_SYSAPI macros are used only when building for environments +** that require non-default calling conventions. */ #ifndef SQLITE_EXTERN # define SQLITE_EXTERN extern @@ -1135,7 +444,7 @@ extern "C" { ** be held constant and Z will be incremented or else Y will be incremented ** and Z will be reset to zero. ** -** Since [version 3.6.18] ([dateof:3.6.18]), +** Since [version 3.6.18] ([dateof:3.6.18]), ** SQLite source code has been stored in the ** Fossil configuration management ** system. ^The SQLITE_SOURCE_ID macro evaluates to @@ -1150,9 +459,9 @@ extern "C" { ** [sqlite3_libversion_number()], [sqlite3_sourceid()], ** [sqlite_version()] and [sqlite_source_id()]. */ -#define SQLITE_VERSION "3.24.0" -#define SQLITE_VERSION_NUMBER 3024000 -#define SQLITE_SOURCE_ID "2018-06-04 19:24:41 c7ee0833225bfd8c5ec2f9bf62b97c4e04d03bd9566366d5221ac8fb199a87ca" +#define SQLITE_VERSION "3.43.0" +#define SQLITE_VERSION_NUMBER 3043000 +#define SQLITE_SOURCE_ID "2023-08-24 12:36:59 0f80b798b3f4b81a7bb4233c58294edd0f1156f36b6ecf5ab8e83631d468778c" /* ** CAPI3REF: Run-Time Library Version Numbers @@ -1178,8 +487,8 @@ extern "C" { ** function is provided for use in DLLs since DLL users usually do not have ** direct access to string constants within the DLL. ^The ** sqlite3_libversion_number() function returns an integer equal to -** [SQLITE_VERSION_NUMBER]. ^(The sqlite3_sourceid() function returns -** a pointer to a string constant whose value is the same as the +** [SQLITE_VERSION_NUMBER]. ^(The sqlite3_sourceid() function returns +** a pointer to a string constant whose value is the same as the ** [SQLITE_SOURCE_ID] C preprocessor macro. Except if SQLite is built ** using an edited copy of [the amalgamation], then the last four characters ** of the hash might be different from [SQLITE_SOURCE_ID].)^ @@ -1194,20 +503,20 @@ SQLITE_API int sqlite3_libversion_number(void); /* ** CAPI3REF: Run-Time Library Compilation Options Diagnostics ** -** ^The sqlite3_compileoption_used() function returns 0 or 1 -** indicating whether the specified option was defined at -** compile time. ^The SQLITE_ prefix may be omitted from the -** option name passed to sqlite3_compileoption_used(). +** ^The sqlite3_compileoption_used() function returns 0 or 1 +** indicating whether the specified option was defined at +** compile time. ^The SQLITE_ prefix may be omitted from the +** option name passed to sqlite3_compileoption_used(). ** ** ^The sqlite3_compileoption_get() function allows iterating ** over the list of options that were defined at compile time by ** returning the N-th compile time option string. ^If N is out of range, -** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ -** prefix is omitted from any strings returned by +** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ +** prefix is omitted from any strings returned by ** sqlite3_compileoption_get(). ** ** ^Support for the diagnostic functions sqlite3_compileoption_used() -** and sqlite3_compileoption_get() may be omitted by specifying the +** and sqlite3_compileoption_get() may be omitted by specifying the ** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time. ** ** See also: SQL functions [sqlite_compileoption_used()] and @@ -1216,6 +525,9 @@ SQLITE_API int sqlite3_libversion_number(void); #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS SQLITE_API int sqlite3_compileoption_used(const char *zOptName); SQLITE_API const char *sqlite3_compileoption_get(int N); +#else +# define sqlite3_compileoption_used(X) 0 +# define sqlite3_compileoption_get(X) ((void*)0) #endif /* @@ -1228,7 +540,7 @@ SQLITE_API const char *sqlite3_compileoption_get(int N); ** SQLite can be compiled with or without mutexes. When ** the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes ** are enabled and SQLite is threadsafe. When the -** [SQLITE_THREADSAFE] macro is 0, +** [SQLITE_THREADSAFE] macro is 0, ** the mutexes are omitted. Without the mutexes, it is not safe ** to use SQLite concurrently from more than one thread. ** @@ -1285,14 +597,14 @@ typedef struct sqlite3 sqlite3; ** ** ^The sqlite3_int64 and sqlite_int64 types can store integer values ** between -9223372036854775808 and +9223372036854775807 inclusive. ^The -** sqlite3_uint64 and sqlite_uint64 types can store integer values +** sqlite3_uint64 and sqlite_uint64 types can store integer values ** between 0 and +18446744073709551615 inclusive. */ #ifdef SQLITE_INT64_TYPE typedef SQLITE_INT64_TYPE sqlite_int64; # ifdef SQLITE_UINT64_TYPE typedef SQLITE_UINT64_TYPE sqlite_uint64; -# else +# else typedef unsigned SQLITE_INT64_TYPE sqlite_uint64; # endif #elif defined(_MSC_VER) || defined(__BORLANDC__) @@ -1323,26 +635,22 @@ typedef sqlite_uint64 sqlite3_uint64; ** the [sqlite3] object is successfully destroyed and all associated ** resources are deallocated. ** -** ^If the database connection is associated with unfinalized prepared -** statements or unfinished sqlite3_backup objects then sqlite3_close() -** will leave the database connection open and return [SQLITE_BUSY]. -** ^If sqlite3_close_v2() is called with unfinalized prepared statements -** and/or unfinished sqlite3_backups, then the database connection becomes -** an unusable "zombie" which will automatically be deallocated when the -** last prepared statement is finalized or the last sqlite3_backup is -** finished. The sqlite3_close_v2() interface is intended for use with -** host languages that are garbage collected, and where the order in which -** destructors are called is arbitrary. -** -** Applications should [sqlite3_finalize | finalize] all [prepared statements], -** [sqlite3_blob_close | close] all [BLOB handles], and +** Ideally, applications should [sqlite3_finalize | finalize] all +** [prepared statements], [sqlite3_blob_close | close] all [BLOB handles], and ** [sqlite3_backup_finish | finish] all [sqlite3_backup] objects associated -** with the [sqlite3] object prior to attempting to close the object. ^If -** sqlite3_close_v2() is called on a [database connection] that still has -** outstanding [prepared statements], [BLOB handles], and/or -** [sqlite3_backup] objects then it returns [SQLITE_OK] and the deallocation -** of resources is deferred until all [prepared statements], [BLOB handles], -** and [sqlite3_backup] objects are also destroyed. +** with the [sqlite3] object prior to attempting to close the object. +** ^If the database connection is associated with unfinalized prepared +** statements, BLOB handlers, and/or unfinished sqlite3_backup objects then +** sqlite3_close() will leave the database connection open and return +** [SQLITE_BUSY]. ^If sqlite3_close_v2() is called with unfinalized prepared +** statements, unclosed BLOB handlers, and/or unfinished sqlite3_backups, +** it returns [SQLITE_OK] regardless, but instead of deallocating the database +** connection immediately, it marks the database connection as an unusable +** "zombie" and makes arrangements to automatically deallocate the database +** connection after all prepared statements are finalized, all BLOB handles +** are closed, and all backups have finished. The sqlite3_close_v2() interface +** is intended for use with host languages that are garbage collected, and +** where the order in which destructors are called is arbitrary. ** ** ^If an [sqlite3] object is destroyed while a transaction is open, ** the transaction is automatically rolled back. @@ -1372,7 +680,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**); ** The sqlite3_exec() interface is a convenience wrapper around ** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()], ** that allows an application to run multiple statements of SQL -** without having to use a lot of C code. +** without having to use a lot of C code. ** ** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded, ** semicolon-separate SQL statements passed into its 2nd argument, @@ -1412,7 +720,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**); ** from [sqlite3_column_name()]. ** ** ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer -** to an empty string, or a pointer that contains only whitespace and/or +** to an empty string, or a pointer that contains only whitespace and/or ** SQL comments, then no SQL statements are evaluated and the database ** is not changed. ** @@ -1499,6 +807,7 @@ SQLITE_API int sqlite3_exec( */ #define SQLITE_ERROR_MISSING_COLLSEQ (SQLITE_ERROR | (1<<8)) #define SQLITE_ERROR_RETRY (SQLITE_ERROR | (2<<8)) +#define SQLITE_ERROR_SNAPSHOT (SQLITE_ERROR | (3<<8)) #define SQLITE_IOERR_READ (SQLITE_IOERR | (1<<8)) #define SQLITE_IOERR_SHORT_READ (SQLITE_IOERR | (2<<8)) #define SQLITE_IOERR_WRITE (SQLITE_IOERR | (3<<8)) @@ -1530,16 +839,23 @@ SQLITE_API int sqlite3_exec( #define SQLITE_IOERR_BEGIN_ATOMIC (SQLITE_IOERR | (29<<8)) #define SQLITE_IOERR_COMMIT_ATOMIC (SQLITE_IOERR | (30<<8)) #define SQLITE_IOERR_ROLLBACK_ATOMIC (SQLITE_IOERR | (31<<8)) +#define SQLITE_IOERR_DATA (SQLITE_IOERR | (32<<8)) +#define SQLITE_IOERR_CORRUPTFS (SQLITE_IOERR | (33<<8)) +#define SQLITE_IOERR_IN_PAGE (SQLITE_IOERR | (34<<8)) #define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) #define SQLITE_LOCKED_VTAB (SQLITE_LOCKED | (2<<8)) #define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) #define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8)) +#define SQLITE_BUSY_TIMEOUT (SQLITE_BUSY | (3<<8)) #define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8)) #define SQLITE_CANTOPEN_ISDIR (SQLITE_CANTOPEN | (2<<8)) #define SQLITE_CANTOPEN_FULLPATH (SQLITE_CANTOPEN | (3<<8)) #define SQLITE_CANTOPEN_CONVPATH (SQLITE_CANTOPEN | (4<<8)) +#define SQLITE_CANTOPEN_DIRTYWAL (SQLITE_CANTOPEN | (5<<8)) /* Not Used */ +#define SQLITE_CANTOPEN_SYMLINK (SQLITE_CANTOPEN | (6<<8)) #define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8)) #define SQLITE_CORRUPT_SEQUENCE (SQLITE_CORRUPT | (2<<8)) +#define SQLITE_CORRUPT_INDEX (SQLITE_CORRUPT | (3<<8)) #define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8)) #define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8)) #define SQLITE_READONLY_ROLLBACK (SQLITE_READONLY | (3<<8)) @@ -1557,11 +873,15 @@ SQLITE_API int sqlite3_exec( #define SQLITE_CONSTRAINT_UNIQUE (SQLITE_CONSTRAINT | (8<<8)) #define SQLITE_CONSTRAINT_VTAB (SQLITE_CONSTRAINT | (9<<8)) #define SQLITE_CONSTRAINT_ROWID (SQLITE_CONSTRAINT |(10<<8)) +#define SQLITE_CONSTRAINT_PINNED (SQLITE_CONSTRAINT |(11<<8)) +#define SQLITE_CONSTRAINT_DATATYPE (SQLITE_CONSTRAINT |(12<<8)) #define SQLITE_NOTICE_RECOVER_WAL (SQLITE_NOTICE | (1<<8)) #define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8)) +#define SQLITE_NOTICE_RBU (SQLITE_NOTICE | (3<<8)) #define SQLITE_WARNING_AUTOINDEX (SQLITE_WARNING | (1<<8)) #define SQLITE_AUTH_USER (SQLITE_AUTH | (1<<8)) #define SQLITE_OK_LOAD_PERMANENTLY (SQLITE_OK | (1<<8)) +#define SQLITE_OK_SYMLINK (SQLITE_OK | (2<<8)) /* internal use only */ /* ** CAPI3REF: Flags For File Open Operations @@ -1569,6 +889,19 @@ SQLITE_API int sqlite3_exec( ** These bit values are intended for use in the ** 3rd parameter to the [sqlite3_open_v2()] interface and ** in the 4th parameter to the [sqlite3_vfs.xOpen] method. +** +** Only those flags marked as "Ok for sqlite3_open_v2()" may be +** used as the third argument to the [sqlite3_open_v2()] interface. +** The other flags have historically been ignored by sqlite3_open_v2(), +** though future versions of SQLite might change so that an error is +** raised if any of the disallowed bits are passed into sqlite3_open_v2(). +** Applications should not depend on the historical behavior. +** +** Note in particular that passing the SQLITE_OPEN_EXCLUSIVE flag into +** [sqlite3_open_v2()] does *not* cause the underlying database file +** to be opened using O_EXCL. Passing SQLITE_OPEN_EXCLUSIVE into +** [sqlite3_open_v2()] has historically be a no-op and might become an +** error in future versions of SQLite. */ #define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */ @@ -1584,14 +917,19 @@ SQLITE_API int sqlite3_exec( #define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 /* VFS only */ #define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 /* VFS only */ #define SQLITE_OPEN_SUBJOURNAL 0x00002000 /* VFS only */ -#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ +#define SQLITE_OPEN_SUPER_JOURNAL 0x00004000 /* VFS only */ #define SQLITE_OPEN_NOMUTEX 0x00008000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_FULLMUTEX 0x00010000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_SHAREDCACHE 0x00020000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_WAL 0x00080000 /* VFS only */ +#define SQLITE_OPEN_NOFOLLOW 0x01000000 /* Ok for sqlite3_open_v2() */ +#define SQLITE_OPEN_EXRESCODE 0x02000000 /* Extended result codes */ /* Reserved: 0x00F00000 */ +/* Legacy compatibility: */ +#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ + /* ** CAPI3REF: Device Characteristics @@ -1647,13 +985,17 @@ SQLITE_API int sqlite3_exec( ** ** SQLite uses one of these integer values as the second ** argument to calls it makes to the xLock() and xUnlock() methods -** of an [sqlite3_io_methods] object. +** of an [sqlite3_io_methods] object. These values are ordered from +** lest restrictive to most restrictive. +** +** The argument to xLock() is always SHARED or higher. The argument to +** xUnlock is either SHARED or NONE. */ -#define SQLITE_LOCK_NONE 0 -#define SQLITE_LOCK_SHARED 1 -#define SQLITE_LOCK_RESERVED 2 -#define SQLITE_LOCK_PENDING 3 -#define SQLITE_LOCK_EXCLUSIVE 4 +#define SQLITE_LOCK_NONE 0 /* xUnlock() only */ +#define SQLITE_LOCK_SHARED 1 /* xLock() or xUnlock() */ +#define SQLITE_LOCK_RESERVED 2 /* xLock() only */ +#define SQLITE_LOCK_PENDING 3 /* xLock() only */ +#define SQLITE_LOCK_EXCLUSIVE 4 /* xLock() only */ /* ** CAPI3REF: Synchronization Type Flags @@ -1688,7 +1030,7 @@ SQLITE_API int sqlite3_exec( /* ** CAPI3REF: OS Interface Open File Handle ** -** An [sqlite3_file] object represents an open file in the +** An [sqlite3_file] object represents an open file in the ** [sqlite3_vfs | OS interface layer]. Individual OS interface ** implementations will ** want to subclass this object by appending additional fields @@ -1710,7 +1052,7 @@ struct sqlite3_file { ** This object defines the methods used to perform various operations ** against the open file represented by the [sqlite3_file] object. ** -** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element +** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element ** to a non-NULL pointer, then the sqlite3_io_methods.xClose method ** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The ** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen] @@ -1731,7 +1073,14 @@ struct sqlite3_file { **
    2. [SQLITE_LOCK_PENDING], or **
    3. [SQLITE_LOCK_EXCLUSIVE]. ** -** xLock() increases the lock. xUnlock() decreases the lock. +** xLock() upgrades the database file lock. In other words, xLock() moves the +** database file lock in the direction NONE toward EXCLUSIVE. The argument to +** xLock() is always on of SHARED, RESERVED, PENDING, or EXCLUSIVE, never +** SQLITE_LOCK_NONE. If the database file lock is already at or above the +** requested lock, then the call to xLock() is a no-op. +** xUnlock() downgrades the database file lock to either SHARED or NONE. +* If the lock is already at or below the requested lock state, then the call +** to xUnlock() is a no-op. ** The xCheckReservedLock() method checks whether any database connection, ** either in this process or in some other process, is holding a RESERVED, ** PENDING, or EXCLUSIVE lock on the file. It returns true @@ -1836,9 +1185,8 @@ struct sqlite3_io_methods { ** opcode causes the xFileControl method to write the current state of ** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED], ** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE]) -** into an integer that the pArg argument points to. This capability -** is used during testing and is only available when the SQLITE_TEST -** compile-time option is used. +** into an integer that the pArg argument points to. +** This capability is only available if SQLite is compiled with [SQLITE_DEBUG]. ** **
    4. [[SQLITE_FCNTL_SIZE_HINT]] ** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS @@ -1848,10 +1196,19 @@ struct sqlite3_io_methods { ** file space based on this hint in order to help writes to the database ** file run faster. ** +**
    5. [[SQLITE_FCNTL_SIZE_LIMIT]] +** The [SQLITE_FCNTL_SIZE_LIMIT] opcode is used by in-memory VFS that +** implements [sqlite3_deserialize()] to set an upper bound on the size +** of the in-memory database. The argument is a pointer to a [sqlite3_int64]. +** If the integer pointed to is negative, then it is filled in with the +** current limit. Otherwise the limit is set to the larger of the value +** of the integer pointed to and the current database size. The integer +** pointed to is set to the new limit. +** **
    6. [[SQLITE_FCNTL_CHUNK_SIZE]] ** The [SQLITE_FCNTL_CHUNK_SIZE] opcode is used to request that the VFS ** extends and truncates the database file in chunks of a size specified -** by the user. The fourth argument to [sqlite3_file_control()] should +** by the user. The fourth argument to [sqlite3_file_control()] should ** point to an integer (type int) containing the new chunk-size to use ** for the nominated database. Allocating database file space in large ** chunks (say 1MB at a time), may reduce file-system fragmentation and @@ -1874,24 +1231,24 @@ struct sqlite3_io_methods { **
    7. [[SQLITE_FCNTL_SYNC]] ** The [SQLITE_FCNTL_SYNC] opcode is generated internally by SQLite and ** sent to the VFS immediately before the xSync method is invoked on a -** database file descriptor. Or, if the xSync method is not invoked -** because the user has configured SQLite with -** [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place +** database file descriptor. Or, if the xSync method is not invoked +** because the user has configured SQLite with +** [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place ** of the xSync method. In most cases, the pointer argument passed with ** this file-control is NULL. However, if the database file is being synced ** as part of a multi-database commit, the argument points to a nul-terminated -** string containing the transactions master-journal file name. VFSes that -** do not need this signal should silently ignore this opcode. Applications -** should not call [sqlite3_file_control()] with this opcode as doing so may -** disrupt the operation of the specialized VFSes that do require it. +** string containing the transactions super-journal file name. VFSes that +** do not need this signal should silently ignore this opcode. Applications +** should not call [sqlite3_file_control()] with this opcode as doing so may +** disrupt the operation of the specialized VFSes that do require it. ** **
    8. [[SQLITE_FCNTL_COMMIT_PHASETWO]] ** The [SQLITE_FCNTL_COMMIT_PHASETWO] opcode is generated internally by SQLite ** and sent to the VFS after a transaction has been committed immediately ** but before the database is unlocked. VFSes that do not need this signal ** should silently ignore this opcode. Applications should not call -** [sqlite3_file_control()] with this opcode as doing so may disrupt the -** operation of the specialized VFSes that do require it. +** [sqlite3_file_control()] with this opcode as doing so may disrupt the +** operation of the specialized VFSes that do require it. ** **
    9. [[SQLITE_FCNTL_WIN32_AV_RETRY]] ** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic @@ -1913,7 +1270,8 @@ struct sqlite3_io_methods { **
    10. [[SQLITE_FCNTL_PERSIST_WAL]] ** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the ** persistent [WAL | Write Ahead Log] setting. By default, the auxiliary -** write ahead log and shared memory files used for transaction control +** write ahead log ([WAL file]) and shared memory +** files used for transaction control ** are automatically deleted when the latest connection to the database ** closes. Setting persistent WAL mode causes those files to persist after ** close. Persisting the files is useful when other processes that do not @@ -1938,13 +1296,13 @@ struct sqlite3_io_methods { **
    11. [[SQLITE_FCNTL_OVERWRITE]] ** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening ** a write transaction to indicate that, unless it is rolled back for some -** reason, the entire database file will be overwritten by the current +** reason, the entire database file will be overwritten by the current ** transaction. This is used by VACUUM operations. ** **
    12. [[SQLITE_FCNTL_VFSNAME]] ** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of ** all [VFSes] in the VFS stack. The names are of all VFS shims and the -** final bottom-level VFS are written into memory obtained from +** final bottom-level VFS are written into memory obtained from ** [sqlite3_malloc()] and the result is stored in the char* variable ** that the fourth parameter of [sqlite3_file_control()] points to. ** The caller is responsible for freeing the memory when done. As with @@ -1963,7 +1321,7 @@ struct sqlite3_io_methods { ** upper-most shim only. ** **
    13. [[SQLITE_FCNTL_PRAGMA]] -** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] +** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] ** file control is sent to the open [sqlite3_file] object corresponding ** to the database file to which the pragma statement refers. ^The argument ** to the [SQLITE_FCNTL_PRAGMA] file control is an array of @@ -1974,7 +1332,7 @@ struct sqlite3_io_methods { ** of the char** argument point to a string obtained from [sqlite3_mprintf()] ** or the equivalent and that string will become the result of the pragma or ** the error message if the pragma fails. ^If the -** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal +** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal ** [PRAGMA] processing continues. ^If the [SQLITE_FCNTL_PRAGMA] ** file control returns [SQLITE_OK], then the parser assumes that the ** VFS has handled the PRAGMA itself and the parser generates a no-op @@ -1991,16 +1349,16 @@ struct sqlite3_io_methods { ** ^The [SQLITE_FCNTL_BUSYHANDLER] ** file-control may be invoked by SQLite on the database file handle ** shortly after it is opened in order to provide a custom VFS with access -** to the connections busy-handler callback. The argument is of type (void **) +** to the connection's busy-handler callback. The argument is of type (void**) ** - an array of two (void *) values. The first (void *) actually points -** to a function of type (int (*)(void *)). In order to invoke the connections +** to a function of type (int (*)(void *)). In order to invoke the connection's ** busy-handler, this function should be invoked with the second (void *) in ** the array as the only argument. If it returns non-zero, then the operation ** should be retried. If it returns zero, the custom VFS should abandon the ** current operation. ** **
    14. [[SQLITE_FCNTL_TEMPFILENAME]] -** ^Application can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control +** ^Applications can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control ** to have SQLite generate a ** temporary filename using the same algorithm that is followed to generate ** temporary filenames for TEMP tables and other internal uses. The @@ -2014,7 +1372,7 @@ struct sqlite3_io_methods { ** The argument is a pointer to a value of type sqlite3_int64 that ** is an advisory maximum number of bytes in the file to memory map. The ** pointer is overwritten with the old value. The limit is not changed if -** the value originally pointed to is negative, and so the current limit +** the value originally pointed to is negative, and so the current limit ** can be queried by passing in a pointer to a negative number. This ** file-control is used internally to implement [PRAGMA mmap_size]. ** @@ -2058,7 +1416,7 @@ struct sqlite3_io_methods { **
    15. [[SQLITE_FCNTL_RBU]] ** The [SQLITE_FCNTL_RBU] opcode is implemented by the special VFS used by ** the RBU extension only. All other VFS should return SQLITE_NOTFOUND for -** this opcode. +** this opcode. ** **
    16. [[SQLITE_FCNTL_BEGIN_ATOMIC_WRITE]] ** If the [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] opcode returns SQLITE_OK, then @@ -2075,7 +1433,7 @@ struct sqlite3_io_methods { ** **
    17. [[SQLITE_FCNTL_COMMIT_ATOMIC_WRITE]] ** The [SQLITE_FCNTL_COMMIT_ATOMIC_WRITE] opcode causes all write -** operations since the previous successful call to +** operations since the previous successful call to ** [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] to be performed atomically. ** This file control returns [SQLITE_OK] if and only if the writes were ** all performed successfully and have been committed to persistent storage. @@ -2087,7 +1445,7 @@ struct sqlite3_io_methods { ** **
    18. [[SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE]] ** The [SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE] opcode causes all write -** operations since the previous successful call to +** operations since the previous successful call to ** [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE] to be rolled back. ** ^This file control takes the file descriptor out of batch write mode ** so that all subsequent write operations are independent. @@ -2095,10 +1453,65 @@ struct sqlite3_io_methods { ** a prior successful call to [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE]. ** **
    19. [[SQLITE_FCNTL_LOCK_TIMEOUT]] -** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode causes attempts to obtain -** a file lock using the xLock or xShmLock methods of the VFS to wait -** for up to M milliseconds before failing, where M is the single -** unsigned integer parameter. +** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode is used to configure a VFS +** to block for up to M milliseconds before failing when attempting to +** obtain a file lock using the xLock or xShmLock methods of the VFS. +** The parameter is a pointer to a 32-bit signed integer that contains +** the value that M is to be set to. Before returning, the 32-bit signed +** integer is overwritten with the previous value of M. +** +**
    20. [[SQLITE_FCNTL_DATA_VERSION]] +** The [SQLITE_FCNTL_DATA_VERSION] opcode is used to detect changes to +** a database file. The argument is a pointer to a 32-bit unsigned integer. +** The "data version" for the pager is written into the pointer. The +** "data version" changes whenever any change occurs to the corresponding +** database file, either through SQL statements on the same database +** connection or through transactions committed by separate database +** connections possibly in other processes. The [sqlite3_total_changes()] +** interface can be used to find if any database on the connection has changed, +** but that interface responds to changes on TEMP as well as MAIN and does +** not provide a mechanism to detect changes to MAIN only. Also, the +** [sqlite3_total_changes()] interface responds to internal changes only and +** omits changes made by other database connections. The +** [PRAGMA data_version] command provides a mechanism to detect changes to +** a single attached database that occur due to other database connections, +** but omits changes implemented by the database connection on which it is +** called. This file control is the only mechanism to detect changes that +** happen either internally or externally and that are associated with +** a particular attached database. +** +**
    21. [[SQLITE_FCNTL_CKPT_START]] +** The [SQLITE_FCNTL_CKPT_START] opcode is invoked from within a checkpoint +** in wal mode before the client starts to copy pages from the wal +** file to the database file. +** +**
    22. [[SQLITE_FCNTL_CKPT_DONE]] +** The [SQLITE_FCNTL_CKPT_DONE] opcode is invoked from within a checkpoint +** in wal mode after the client has finished copying pages from the wal +** file to the database file, but before the *-shm file is updated to +** record the fact that the pages have been checkpointed. +** +**
    23. [[SQLITE_FCNTL_EXTERNAL_READER]] +** The EXPERIMENTAL [SQLITE_FCNTL_EXTERNAL_READER] opcode is used to detect +** whether or not there is a database client in another process with a wal-mode +** transaction open on the database or not. It is only available on unix.The +** (void*) argument passed with this file-control should be a pointer to a +** value of type (int). The integer value is set to 1 if the database is a wal +** mode database and there exists at least one client in another process that +** currently has an SQL transaction open on the database. It is set to 0 if +** the database is not a wal-mode db, or if there is no such connection in any +** other process. This opcode cannot be used to detect transactions opened +** by clients within the current process, only within other processes. +** +**
    24. [[SQLITE_FCNTL_CKSM_FILE]] +** The [SQLITE_FCNTL_CKSM_FILE] opcode is for use internally by the +** [checksum VFS shim] only. +** +**
    25. [[SQLITE_FCNTL_RESET_CACHE]] +** If there is currently no transaction open on the database, and the +** database is not a temp db, then the [SQLITE_FCNTL_RESET_CACHE] file-control +** purges the contents of the in-memory page cache. If there is an open +** transaction, or if the db is a temp-db, this opcode is a no-op, not an error. ** */ #define SQLITE_FCNTL_LOCKSTATE 1 @@ -2134,6 +1547,14 @@ struct sqlite3_io_methods { #define SQLITE_FCNTL_COMMIT_ATOMIC_WRITE 32 #define SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE 33 #define SQLITE_FCNTL_LOCK_TIMEOUT 34 +#define SQLITE_FCNTL_DATA_VERSION 35 +#define SQLITE_FCNTL_SIZE_LIMIT 36 +#define SQLITE_FCNTL_CKPT_DONE 37 +#define SQLITE_FCNTL_RESERVE_BYTES 38 +#define SQLITE_FCNTL_CKPT_START 39 +#define SQLITE_FCNTL_EXTERNAL_READER 40 +#define SQLITE_FCNTL_CKSM_FILE 41 +#define SQLITE_FCNTL_RESET_CACHE 42 /* deprecated names */ #define SQLITE_GET_LOCKPROXYFILE SQLITE_FCNTL_GET_LOCKPROXYFILE @@ -2163,6 +1584,26 @@ typedef struct sqlite3_mutex sqlite3_mutex; */ typedef struct sqlite3_api_routines sqlite3_api_routines; +/* +** CAPI3REF: File Name +** +** Type [sqlite3_filename] is used by SQLite to pass filenames to the +** xOpen method of a [VFS]. It may be cast to (const char*) and treated +** as a normal, nul-terminated, UTF-8 buffer containing the filename, but +** may also be passed to special APIs such as: +** +**
        +**
      • sqlite3_filename_database() +**
      • sqlite3_filename_journal() +**
      • sqlite3_filename_wal() +**
      • sqlite3_uri_parameter() +**
      • sqlite3_uri_boolean() +**
      • sqlite3_uri_int64() +**
      • sqlite3_uri_key() +**
      +*/ +typedef const char *sqlite3_filename; + /* ** CAPI3REF: OS Interface Object ** @@ -2179,10 +1620,10 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** to 3 with SQLite [version 3.7.6] on [dateof:3.7.6]. Additional fields ** may be appended to the sqlite3_vfs object and the iVersion value ** may increase again in future versions of SQLite. -** Note that the structure -** of the sqlite3_vfs object changes in the transition from +** Note that due to an oversight, the structure +** of the sqlite3_vfs object changed in the transition from ** SQLite [version 3.5.9] to [version 3.6.0] on [dateof:3.6.0] -** and yet the iVersion field was not modified. +** and yet the iVersion field was not increased. ** ** The szOsFile field is the size of the subclassed [sqlite3_file] ** structure used by this VFS. mxPathname is the maximum length of @@ -2217,14 +1658,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** the [sqlite3_file] can safely store a pointer to the ** filename if it needs to remember the filename for some reason. ** If the zFilename parameter to xOpen is a NULL pointer then xOpen -** must invent its own temporary name for the file. ^Whenever the +** must invent its own temporary name for the file. ^Whenever the ** xFilename parameter is NULL it will also be the case that the ** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE]. ** ** The flags argument to xOpen() includes all bits set in ** the flags argument to [sqlite3_open_v2()]. Or if [sqlite3_open()] ** or [sqlite3_open16()] is used, then flags includes at least -** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. +** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. ** If xOpen() opens a file read-only then it sets *pOutFlags to ** include [SQLITE_OPEN_READONLY]. Other bits in *pOutFlags may be set. ** @@ -2238,7 +1679,7 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; **
    26. [SQLITE_OPEN_TEMP_JOURNAL] **
    27. [SQLITE_OPEN_TRANSIENT_DB] **
    28. [SQLITE_OPEN_SUBJOURNAL] -**
    29. [SQLITE_OPEN_MASTER_JOURNAL] +**
    30. [SQLITE_OPEN_SUPER_JOURNAL] **
    31. [SQLITE_OPEN_WAL] ** )^ ** @@ -2266,14 +1707,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** ^The [SQLITE_OPEN_EXCLUSIVE] flag is always used in conjunction ** with the [SQLITE_OPEN_CREATE] flag, which are both directly ** analogous to the O_EXCL and O_CREAT flags of the POSIX open() -** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the +** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the ** SQLITE_OPEN_CREATE, is used to indicate that file should always ** be created, and that it is an error if it already exists. -** It is not used to indicate the file should be opened +** It is not used to indicate the file should be opened ** for exclusive access. ** ** ^At least szOsFile bytes of memory are allocated by SQLite -** to hold the [sqlite3_file] structure passed as the third +** to hold the [sqlite3_file] structure passed as the third ** argument to xOpen. The xOpen method does not have to ** allocate the structure; it should just fill it in. Note that ** the xOpen method must set the sqlite3_file.pMethods to either @@ -2286,8 +1727,14 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS] ** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to ** test whether a file is readable and writable, or [SQLITE_ACCESS_READ] -** to test whether a file is at least readable. The file can be a -** directory. +** to test whether a file is at least readable. The SQLITE_ACCESS_READ +** flag is never actually used and is not implemented in the built-in +** VFSes of SQLite. The file is named by the second argument and can be a +** directory. The xAccess method returns [SQLITE_OK] on success or some +** non-zero error code if there is an I/O error or if the name of +** the file given in the second argument is illegal. If SQLITE_OK +** is returned, then non-zero or zero is written into *pResOut to indicate +** whether or not the file is accessible. ** ** ^SQLite will always allocate at least mxPathname+1 bytes for the ** output buffer xFullPathname. The exact size of the output buffer @@ -2307,16 +1754,16 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** method returns a Julian Day Number for the current date and time as ** a floating point value. ** ^The xCurrentTimeInt64() method returns, as an integer, the Julian -** Day Number multiplied by 86400000 (the number of milliseconds in -** a 24-hour day). +** Day Number multiplied by 86400000 (the number of milliseconds in +** a 24-hour day). ** ^SQLite will use the xCurrentTimeInt64() method to get the current -** date and time if that method is available (if iVersion is 2 or +** date and time if that method is available (if iVersion is 2 or ** greater and the function pointer is not NULL) and will fall back ** to xCurrentTime() if xCurrentTimeInt64() is unavailable. ** ** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces ** are not used by the SQLite core. These optional interfaces are provided -** by some VFSes to facilitate testing of the VFS code. By overriding +** by some VFSes to facilitate testing of the VFS code. By overriding ** system calls with functions under its control, a test program can ** simulate faults and error conditions that would otherwise be difficult ** or impossible to induce. The set of system calls that can be overridden @@ -2335,7 +1782,7 @@ struct sqlite3_vfs { sqlite3_vfs *pNext; /* Next registered VFS */ const char *zName; /* Name of this virtual file system */ void *pAppData; /* Pointer to application-specific data */ - int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*, + int (*xOpen)(sqlite3_vfs*, sqlite3_filename zName, sqlite3_file*, int flags, int *pOutFlags); int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir); int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut); @@ -2363,7 +1810,7 @@ struct sqlite3_vfs { /* ** The methods above are in versions 1 through 3 of the sqlite_vfs object. ** New fields may be appended in future versions. The iVersion - ** value will increment whenever this happens. + ** value will increment whenever this happens. */ }; @@ -2407,7 +1854,7 @@ struct sqlite3_vfs { ** ** ** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as -** was given on the corresponding lock. +** was given on the corresponding lock. ** ** The xShmLock method can transition between unlocked and SHARED or ** between unlocked and EXCLUSIVE. It cannot transition between SHARED @@ -2522,20 +1969,23 @@ SQLITE_API int sqlite3_os_end(void); ** must ensure that no other SQLite interfaces are invoked by other ** threads while sqlite3_config() is running. ** -** The sqlite3_config() interface -** may only be invoked prior to library initialization using -** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. -** ^If sqlite3_config() is called after [sqlite3_initialize()] and before -** [sqlite3_shutdown()] then it will return SQLITE_MISUSE. -** Note, however, that ^sqlite3_config() can be called as part of the -** implementation of an application-defined [sqlite3_os_init()]. -** ** The first argument to sqlite3_config() is an integer ** [configuration option] that determines ** what property of SQLite is to be configured. Subsequent arguments ** vary depending on the [configuration option] ** in the first argument. ** +** For most configuration options, the sqlite3_config() interface +** may only be invoked prior to library initialization using +** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. +** The exceptional configuration options that may be invoked at any time +** are called "anytime configuration options". +** ^If sqlite3_config() is called after [sqlite3_initialize()] and before +** [sqlite3_shutdown()] with a first argument that is not an anytime +** configuration option, then the sqlite3_config() call will return SQLITE_MISUSE. +** Note, however, that ^sqlite3_config() can be called as part of the +** implementation of an application-defined [sqlite3_os_init()]. +** ** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK]. ** ^If the option is unknown or SQLite is unable to set the option ** then this routine returns a non-zero [error code]. @@ -2552,7 +2002,7 @@ SQLITE_API int sqlite3_config(int, ...); ** [database connection] (specified in the first argument). ** ** The second argument to sqlite3_db_config(D,V,...) is the -** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code +** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code ** that indicates what aspect of the [database connection] is being configured. ** Subsequent arguments vary depending on the configuration verb. ** @@ -2570,7 +2020,7 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...); ** This object is used in only one place in the SQLite interface. ** A pointer to an instance of this object is the argument to ** [sqlite3_config()] when the configuration option is -** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. +** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. ** By creating an instance of this object ** and passing it to [sqlite3_config]([SQLITE_CONFIG_MALLOC]) ** during configuration, an application can specify an alternative @@ -2600,17 +2050,17 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...); ** allocators round up memory allocations at least to the next multiple ** of 8. Some allocators round up to a larger multiple or to a power of 2. ** Every memory allocation request coming in through [sqlite3_malloc()] -** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, +** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, ** that causes the corresponding memory allocation to fail. ** ** The xInit method initializes the memory allocator. For example, -** it might allocate any require mutexes or initialize internal data +** it might allocate any required mutexes or initialize internal data ** structures. The xShutdown method is invoked (indirectly) by ** [sqlite3_shutdown()] and should deallocate any resources acquired ** by xInit. The pAppData pointer is used as the only parameter to ** xInit and xShutdown. ** -** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes +** SQLite holds the [SQLITE_MUTEX_STATIC_MAIN] mutex when it invokes ** the xInit method, so the xInit method need not be threadsafe. The ** xShutdown method is only called from [sqlite3_shutdown()] so it does ** not need to be threadsafe either. For all other methods, SQLite @@ -2643,6 +2093,23 @@ struct sqlite3_mem_methods { ** These constants are the available integer configuration options that ** can be passed as the first argument to the [sqlite3_config()] interface. ** +** Most of the configuration options for sqlite3_config() +** will only work if invoked prior to [sqlite3_initialize()] or after +** [sqlite3_shutdown()]. The few exceptions to this rule are called +** "anytime configuration options". +** ^Calling [sqlite3_config()] with a first argument that is not an +** anytime configuration option in between calls to [sqlite3_initialize()] and +** [sqlite3_shutdown()] is a no-op that returns SQLITE_MISUSE. +** +** The set of anytime configuration options can change (by insertions +** and/or deletions) from one release of SQLite to the next. +** As of SQLite version 3.42.0, the complete set of anytime configuration +** options is: +**
        +**
      • SQLITE_CONFIG_LOG +**
      • SQLITE_CONFIG_PCACHE_HDRSZ +**
      +** ** New configuration options may be added in future releases of SQLite. ** Existing configuration options might be discontinued. Applications ** should check the return code from [sqlite3_config()] to make sure that @@ -2658,7 +2125,7 @@ struct sqlite3_mem_methods { ** by a single thread. ^If SQLite is compiled with ** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then ** it is not possible to change the [threading mode] from its default -** value of Single-thread and so [sqlite3_config()] will return +** value of Single-thread and so [sqlite3_config()] will return ** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD ** configuration option.
    ** @@ -2693,7 +2160,7 @@ struct sqlite3_mem_methods { ** SQLITE_CONFIG_SERIALIZED configuration option.
    ** ** [[SQLITE_CONFIG_MALLOC]]
    SQLITE_CONFIG_MALLOC
    -**
    ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is +**
    ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is ** a pointer to an instance of the [sqlite3_mem_methods] structure. ** The argument specifies ** alternative low-level memory allocation routines to be used in place of @@ -2726,6 +2193,7 @@ struct sqlite3_mem_methods { ** memory allocation statistics. ^(When memory allocation statistics are ** disabled, the following SQLite interfaces become non-operational: ** ** ** ^Specifying an unknown parameter in the query component of a URI is not an @@ -4268,36 +4002,37 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*); ** ** **
    URI filenames Results -**
    file:data.db +**
    file:data.db ** Open the file "data.db" in the current directory. **
    file:/home/fred/data.db
    -** file:///home/fred/data.db
    -** file://localhost/home/fred/data.db
    		+** file:///home/fred/data.db
    +** file://localhost/home/fred/data.db
    		** Open the database file "/home/fred/data.db". -**
    file://darkstar/home/fred/data.db +**
    file://darkstar/home/fred/data.db ** An error. "darkstar" is not a recognized authority. -**
    +**
    ** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db ** Windows only: Open the file "data.db" on fred's desktop on drive -** C:. Note that the %20 escaping in this example is not strictly +** C:. Note that the %20 escaping in this example is not strictly ** necessary - space characters can be used literally ** in URI filenames. -**
    file:data.db?mode=ro&cache=private +**
    file:data.db?mode=ro&cache=private ** Open file "data.db" in the current directory for read-only access. ** Regardless of whether or not shared-cache mode is enabled by ** default, use a private cache. **
    file:/home/fred/data.db?vfs=unix-dotfile ** Open file "/home/fred/data.db". Use the special VFS "unix-dotfile" ** that uses dot-files in place of posix advisory locking. -**
    file:data.db?mode=readonly +**
    file:data.db?mode=readonly ** An error. "readonly" is not a valid option for the "mode" parameter. +** Use "ro" instead: "file:data.db?mode=ro". **
    ** ** ^URI hexadecimal escape sequences (%HH) are supported within the path and ** query components of a URI. A hexadecimal escape sequence consists of a -** percent sign - "%" - followed by exactly two hexadecimal digits +** percent sign - "%" - followed by exactly two hexadecimal digits ** specifying an octet value. ^Before the path or query components of a -** URI filename are interpreted, they are encoded using UTF-8 and all +** URI filename are interpreted, they are encoded using UTF-8 and all ** hexadecimal escape sequences replaced by a single byte containing the ** corresponding octet. If this process generates an invalid UTF-8 encoding, ** the results are undefined. @@ -4332,17 +4067,27 @@ SQLITE_API int sqlite3_open_v2( /* ** CAPI3REF: Obtain Values For URI Parameters ** -** These are utility routines, useful to VFS implementations, that check -** to see if a database file was a URI that contained a specific query +** These are utility routines, useful to [VFS|custom VFS implementations], +** that check if a database file was a URI that contained a specific query ** parameter, and if so obtains the value of that query parameter. ** -** If F is the database filename pointer passed into the xOpen() method of -** a VFS implementation when the flags parameter to xOpen() has one or -** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and -** P is the name of the query parameter, then +** The first parameter to these interfaces (hereafter referred to +** as F) must be one of: +** +** If the F parameter is not one of the above, then the behavior is +** undefined and probably undesirable. Older versions of SQLite were +** more tolerant of invalid F parameters than newer versions. +** +** If F is a suitable filename (as described in the previous paragraph) +** and if P is the name of the query parameter, then ** sqlite3_uri_parameter(F,P) returns the value of the P -** parameter if it exists or a NULL pointer if P does not appear as a -** query parameter on F. If P is a query parameter of F +** parameter if it exists or a NULL pointer if P does not appear as a +** query parameter on F. If P is a query parameter of F and it ** has no explicit value, then sqlite3_uri_parameter(F,P) returns ** a pointer to an empty string. ** @@ -4350,44 +4095,177 @@ SQLITE_API int sqlite3_open_v2( ** parameter and returns true (1) or false (0) according to the value ** of P. The sqlite3_uri_boolean(F,P,B) routine returns true (1) if the ** value of query parameter P is one of "yes", "true", or "on" in any -** case or if the value begins with a non-zero number. The +** case or if the value begins with a non-zero number. The ** sqlite3_uri_boolean(F,P,B) routines returns false (0) if the value of ** query parameter P is one of "no", "false", or "off" in any case or ** if the value begins with a numeric zero. If P is not a query -** parameter on F or if the value of P is does not match any of the +** parameter on F or if the value of P does not match any of the ** above, then sqlite3_uri_boolean(F,P,B) returns (B!=0). ** ** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a ** 64-bit signed integer and returns that integer, or D if P does not ** exist. If the value of P is something other than an integer, then ** zero is returned. -** +** +** The sqlite3_uri_key(F,N) returns a pointer to the name (not +** the value) of the N-th query parameter for filename F, or a NULL +** pointer if N is less than zero or greater than the number of query +** parameters minus 1. The N value is zero-based so N should be 0 to obtain +** the name of the first query parameter, 1 for the second parameter, and +** so forth. +** ** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and ** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and -** is not a database file pathname pointer that SQLite passed into the xOpen -** VFS method, then the behavior of this routine is undefined and probably -** undesirable. +** is not a database file pathname pointer that the SQLite core passed +** into the xOpen VFS method, then the behavior of this routine is undefined +** and probably undesirable. +** +** Beginning with SQLite [version 3.31.0] ([dateof:3.31.0]) the input F +** parameter can also be the name of a rollback journal file or WAL file +** in addition to the main database file. Prior to version 3.31.0, these +** routines would only work if F was the name of the main database file. +** When the F parameter is the name of the rollback journal or WAL file, +** it has access to all the same query parameters as were found on the +** main database file. +** +** See the [URI filename] documentation for additional information. */ -SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam); -SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault); -SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64); +SQLITE_API const char *sqlite3_uri_parameter(sqlite3_filename z, const char *zParam); +SQLITE_API int sqlite3_uri_boolean(sqlite3_filename z, const char *zParam, int bDefault); +SQLITE_API sqlite3_int64 sqlite3_uri_int64(sqlite3_filename, const char*, sqlite3_int64); +SQLITE_API const char *sqlite3_uri_key(sqlite3_filename z, int N); +/* +** CAPI3REF: Translate filenames +** +** These routines are available to [VFS|custom VFS implementations] for +** translating filenames between the main database file, the journal file, +** and the WAL file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** passed by the SQLite core into the VFS, then sqlite3_filename_database(F) +** returns the name of the corresponding database file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** passed by the SQLite core into the VFS, or if F is a database filename +** obtained from [sqlite3_db_filename()], then sqlite3_filename_journal(F) +** returns the name of the corresponding rollback journal file. +** +** If F is the name of an sqlite database file, journal file, or WAL file +** that was passed by the SQLite core into the VFS, or if F is a database +** filename obtained from [sqlite3_db_filename()], then +** sqlite3_filename_wal(F) returns the name of the corresponding +** WAL file. +** +** In all of the above, if F is not the name of a database, journal or WAL +** filename passed into the VFS from the SQLite core and F is not the +** return value from [sqlite3_db_filename()], then the result is +** undefined and is likely a memory access violation. +*/ +SQLITE_API const char *sqlite3_filename_database(sqlite3_filename); +SQLITE_API const char *sqlite3_filename_journal(sqlite3_filename); +SQLITE_API const char *sqlite3_filename_wal(sqlite3_filename); + +/* +** CAPI3REF: Database File Corresponding To A Journal +** +** ^If X is the name of a rollback or WAL-mode journal file that is +** passed into the xOpen method of [sqlite3_vfs], then +** sqlite3_database_file_object(X) returns a pointer to the [sqlite3_file] +** object that represents the main database file. +** +** This routine is intended for use in custom [VFS] implementations +** only. It is not a general-purpose interface. +** The argument sqlite3_file_object(X) must be a filename pointer that +** has been passed into [sqlite3_vfs].xOpen method where the +** flags parameter to xOpen contains one of the bits +** [SQLITE_OPEN_MAIN_JOURNAL] or [SQLITE_OPEN_WAL]. Any other use +** of this routine results in undefined and probably undesirable +** behavior. +*/ +SQLITE_API sqlite3_file *sqlite3_database_file_object(const char*); + +/* +** CAPI3REF: Create and Destroy VFS Filenames +** +** These interfaces are provided for use by [VFS shim] implementations and +** are not useful outside of that context. +** +** The sqlite3_create_filename(D,J,W,N,P) allocates memory to hold a version of +** database filename D with corresponding journal file J and WAL file W and +** with N URI parameters key/values pairs in the array P. The result from +** sqlite3_create_filename(D,J,W,N,P) is a pointer to a database filename that +** is safe to pass to routines like: +** +** If a memory allocation error occurs, sqlite3_create_filename() might +** return a NULL pointer. The memory obtained from sqlite3_create_filename(X) +** must be released by a corresponding call to sqlite3_free_filename(Y). +** +** The P parameter in sqlite3_create_filename(D,J,W,N,P) should be an array +** of 2*N pointers to strings. Each pair of pointers in this array corresponds +** to a key and value for a query parameter. The P parameter may be a NULL +** pointer if N is zero. None of the 2*N pointers in the P array may be +** NULL pointers and key pointers should not be empty strings. +** None of the D, J, or W parameters to sqlite3_create_filename(D,J,W,N,P) may +** be NULL pointers, though they can be empty strings. +** +** The sqlite3_free_filename(Y) routine releases a memory allocation +** previously obtained from sqlite3_create_filename(). Invoking +** sqlite3_free_filename(Y) where Y is a NULL pointer is a harmless no-op. +** +** If the Y parameter to sqlite3_free_filename(Y) is anything other +** than a NULL pointer or a pointer previously acquired from +** sqlite3_create_filename(), then bad things such as heap +** corruption or segfaults may occur. The value Y should not be +** used again after sqlite3_free_filename(Y) has been called. This means +** that if the [sqlite3_vfs.xOpen()] method of a VFS has been called using Y, +** then the corresponding [sqlite3_module.xClose() method should also be +** invoked prior to calling sqlite3_free_filename(Y). +*/ +SQLITE_API sqlite3_filename sqlite3_create_filename( + const char *zDatabase, + const char *zJournal, + const char *zWal, + int nParam, + const char **azParam +); +SQLITE_API void sqlite3_free_filename(sqlite3_filename); /* ** CAPI3REF: Error Codes And Messages ** METHOD: sqlite3 ** -** ^If the most recent sqlite3_* API call associated with +** ^If the most recent sqlite3_* API call associated with ** [database connection] D failed, then the sqlite3_errcode(D) interface ** returns the numeric [result code] or [extended result code] for that ** API call. -** If the most recent API call was successful, -** then the return value from sqlite3_errcode() is undefined. ** ^The sqlite3_extended_errcode() -** interface is the same except that it always returns the +** interface is the same except that it always returns the ** [extended result code] even when extended result codes are ** disabled. ** +** The values returned by sqlite3_errcode() and/or +** sqlite3_extended_errcode() might change with each API call. +** Except, there are some interfaces that are guaranteed to never +** change the value of the error code. The error-code preserving +** interfaces include the following: +** +** +** ** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language ** text that describes the error, as either UTF-8 or UTF-16 respectively. ** ^(Memory to hold the error message string is managed internally. @@ -4400,6 +4278,13 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int ** ^(Memory to hold the error message string is managed internally ** and must not be freed by the application)^. ** +** ^If the most recent error references a specific token in the input +** SQL, the sqlite3_error_offset() interface returns the byte offset +** of the start of that token. ^The byte offset returned by +** sqlite3_error_offset() assumes that the input SQL is UTF8. +** ^If the most recent error does not reference a specific token in the input +** SQL, then the sqlite3_error_offset() function returns -1. +** ** When the serialized [threading mode] is in use, it might be the ** case that a second error occurs on a separate thread in between ** the time of the first error and the call to these interfaces. @@ -4419,6 +4304,7 @@ SQLITE_API int sqlite3_extended_errcode(sqlite3 *db); SQLITE_API const char *sqlite3_errmsg(sqlite3*); SQLITE_API const void *sqlite3_errmsg16(sqlite3*); SQLITE_API const char *sqlite3_errstr(int); +SQLITE_API int sqlite3_error_offset(sqlite3 *db); /* ** CAPI3REF: Prepared Statement Object @@ -4428,7 +4314,7 @@ SQLITE_API const char *sqlite3_errstr(int); ** has been compiled into binary form and is ready to be evaluated. ** ** Think of each SQL statement as a separate computer program. The -** original SQL text is source code. A prepared statement object +** original SQL text is source code. A prepared statement object ** is the compiled object code. All SQL must be converted into a ** prepared statement before it can be run. ** @@ -4458,7 +4344,7 @@ typedef struct sqlite3_stmt sqlite3_stmt; ** new limit for that construct.)^ ** ** ^If the new limit is a negative number, the limit is unchanged. -** ^(For each limit category SQLITE_LIMIT_NAME there is a +** ^(For each limit category SQLITE_LIMIT_NAME there is a ** [limits | hard upper bound] ** set at compile-time by a C preprocessor macro called ** [limits | SQLITE_MAX_NAME]. @@ -4466,7 +4352,7 @@ typedef struct sqlite3_stmt sqlite3_stmt; ** ^Attempts to increase a limit above its hard upper bound are ** silently truncated to the hard upper bound. ** -** ^Regardless of whether or not the limit was changed, the +** ^Regardless of whether or not the limit was changed, the ** [sqlite3_limit()] interface returns the prior value of the limit. ** ^Hence, to find the current value of a limit without changing it, ** simply invoke this interface with the third parameter set to -1. @@ -4571,15 +4457,30 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); **
    The SQLITE_PREPARE_PERSISTENT flag is a hint to the query planner ** that the prepared statement will be retained for a long time and ** probably reused many times.)^ ^Without this flag, [sqlite3_prepare_v3()] -** and [sqlite3_prepare16_v3()] assume that the prepared statement will +** and [sqlite3_prepare16_v3()] assume that the prepared statement will ** be used just once or at most a few times and then destroyed using ** [sqlite3_finalize()] relatively soon. The current implementation acts ** on this hint by avoiding the use of [lookaside memory] so as not to ** deplete the limited store of lookaside memory. Future versions of ** SQLite may act on this hint differently. +** +** [[SQLITE_PREPARE_NORMALIZE]]
    SQLITE_PREPARE_NORMALIZE
    +**
    The SQLITE_PREPARE_NORMALIZE flag is a no-op. This flag used +** to be required for any prepared statement that wanted to use the +** [sqlite3_normalized_sql()] interface. However, the +** [sqlite3_normalized_sql()] interface is now available to all +** prepared statements, regardless of whether or not they use this +** flag. +** +** [[SQLITE_PREPARE_NO_VTAB]]
    SQLITE_PREPARE_NO_VTAB
    +**
    The SQLITE_PREPARE_NO_VTAB flag causes the SQL compiler +** to return an error (error code SQLITE_ERROR) if the statement uses +** any virtual tables. ** */ #define SQLITE_PREPARE_PERSISTENT 0x01 +#define SQLITE_PREPARE_NORMALIZE 0x02 +#define SQLITE_PREPARE_NO_VTAB 0x04 /* ** CAPI3REF: Compiling An SQL Statement @@ -4663,15 +4564,15 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); **
    • ** **
  • -** ^If the specific value bound to [parameter | host parameter] in the +** ^If the specific value bound to a [parameter | host parameter] in the ** WHERE clause might influence the choice of query plan for a statement, -** then the statement will be automatically recompiled, as if there had been -** a schema change, on the first [sqlite3_step()] call following any change -** to the [sqlite3_bind_text | bindings] of that [parameter]. -** ^The specific value of WHERE-clause [parameter] might influence the +** then the statement will be automatically recompiled, as if there had been +** a schema change, on the first [sqlite3_step()] call following any change +** to the [sqlite3_bind_text | bindings] of that [parameter]. +** ^The specific value of a WHERE-clause [parameter] might influence the ** choice of query plan if the parameter is the left-hand side of a [LIKE] ** or [GLOB] operator or if the parameter is compared to an indexed column -** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled. +** and the [SQLITE_ENABLE_STAT4] compile-time option is enabled. **
    • ** ** @@ -4737,6 +4638,11 @@ SQLITE_API int sqlite3_prepare16_v3( ** ^The sqlite3_expanded_sql(P) interface returns a pointer to a UTF-8 ** string containing the SQL text of prepared statement P with ** [bound parameters] expanded. +** ^The sqlite3_normalized_sql(P) interface returns a pointer to a UTF-8 +** string containing the normalized SQL text of prepared statement P. The +** semantics used to normalize a SQL statement are unspecified and subject +** to change. At a minimum, literal values will be replaced with suitable +** placeholders. ** ** ^(For example, if a prepared statement is created using the SQL ** text "SELECT $abc,:xyz" and if parameter $abc is bound to integer 2345 @@ -4752,14 +4658,21 @@ SQLITE_API int sqlite3_prepare16_v3( ** bound parameter expansions. ^The [SQLITE_OMIT_TRACE] compile-time ** option causes sqlite3_expanded_sql() to always return NULL. ** -** ^The string returned by sqlite3_sql(P) is managed by SQLite and is -** automatically freed when the prepared statement is finalized. +** ^The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P) +** are managed by SQLite and are automatically freed when the prepared +** statement is finalized. ** ^The string returned by sqlite3_expanded_sql(P), on the other hand, -** is obtained from [sqlite3_malloc()] and must be free by the application +** is obtained from [sqlite3_malloc()] and must be freed by the application ** by passing it to [sqlite3_free()]. +** +** ^The sqlite3_normalized_sql() interface is only available if +** the [SQLITE_ENABLE_NORMALIZE] compile-time option is defined. */ SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); +#ifdef SQLITE_ENABLE_NORMALIZE +SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt); +#endif /* ** CAPI3REF: Determine If An SQL Statement Writes The Database @@ -4770,8 +4683,8 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); ** the content of the database file. ** ** Note that [application-defined SQL functions] or -** [virtual tables] might change the database indirectly as a side effect. -** ^(For example, if an application defines a function "eval()" that +** [virtual tables] might change the database indirectly as a side effect. +** ^(For example, if an application defines a function "eval()" that ** calls [sqlite3_exec()], then the following SQL statement would ** change the database file through side-effects: ** @@ -4785,35 +4698,95 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); ** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK], ** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true, ** since the statements themselves do not actually modify the database but -** rather they control the timing of when other statements modify the +** rather they control the timing of when other statements modify the ** database. ^The [ATTACH] and [DETACH] statements also cause ** sqlite3_stmt_readonly() to return true since, while those statements -** change the configuration of a database connection, they do not make +** change the configuration of a database connection, they do not make ** changes to the content of the database files on disk. ** ^The sqlite3_stmt_readonly() interface returns true for [BEGIN] since ** [BEGIN] merely sets internal flags, but the [BEGIN|BEGIN IMMEDIATE] and ** [BEGIN|BEGIN EXCLUSIVE] commands do touch the database and so ** sqlite3_stmt_readonly() returns false for those commands. +** +** ^This routine returns false if there is any possibility that the +** statement might change the database file. ^A false return does +** not guarantee that the statement will change the database file. +** ^For example, an UPDATE statement might have a WHERE clause that +** makes it a no-op, but the sqlite3_stmt_readonly() result would still +** be false. ^Similarly, a CREATE TABLE IF NOT EXISTS statement is a +** read-only no-op if the table already exists, but +** sqlite3_stmt_readonly() still returns false for such a statement. +** +** ^If prepared statement X is an [EXPLAIN] or [EXPLAIN QUERY PLAN] +** statement, then sqlite3_stmt_readonly(X) returns the same value as +** if the EXPLAIN or EXPLAIN QUERY PLAN prefix were omitted. */ SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt); +/* +** CAPI3REF: Query The EXPLAIN Setting For A Prepared Statement +** METHOD: sqlite3_stmt +** +** ^The sqlite3_stmt_isexplain(S) interface returns 1 if the +** prepared statement S is an EXPLAIN statement, or 2 if the +** statement S is an EXPLAIN QUERY PLAN. +** ^The sqlite3_stmt_isexplain(S) interface returns 0 if S is +** an ordinary statement or a NULL pointer. +*/ +SQLITE_API int sqlite3_stmt_isexplain(sqlite3_stmt *pStmt); + +/* +** CAPI3REF: Change The EXPLAIN Setting For A Prepared Statement +** METHOD: sqlite3_stmt +** +** The sqlite3_stmt_explain(S,E) interface changes the EXPLAIN +** setting for [prepared statement] S. If E is zero, then S becomes +** a normal prepared statement. If E is 1, then S behaves as if +** its SQL text began with "[EXPLAIN]". If E is 2, then S behaves as if +** its SQL text began with "[EXPLAIN QUERY PLAN]". +** +** Calling sqlite3_stmt_explain(S,E) might cause S to be reprepared. +** SQLite tries to avoid a reprepare, but a reprepare might be necessary +** on the first transition into EXPLAIN or EXPLAIN QUERY PLAN mode. +** +** Because of the potential need to reprepare, a call to +** sqlite3_stmt_explain(S,E) will fail with SQLITE_ERROR if S cannot be +** reprepared because it was created using [sqlite3_prepare()] instead of +** the newer [sqlite3_prepare_v2()] or [sqlite3_prepare_v3()] interfaces and +** hence has no saved SQL text with which to reprepare. +** +** Changing the explain setting for a prepared statement does not change +** the original SQL text for the statement. Hence, if the SQL text originally +** began with EXPLAIN or EXPLAIN QUERY PLAN, but sqlite3_stmt_explain(S,0) +** is called to convert the statement into an ordinary statement, the EXPLAIN +** or EXPLAIN QUERY PLAN keywords will still appear in the sqlite3_sql(S) +** output, even though the statement now acts like a normal SQL statement. +** +** This routine returns SQLITE_OK if the explain mode is successfully +** changed, or an error code if the explain mode could not be changed. +** The explain mode cannot be changed while a statement is active. +** Hence, it is good practice to call [sqlite3_reset(S)] +** immediately prior to calling sqlite3_stmt_explain(S,E). +*/ +SQLITE_API int sqlite3_stmt_explain(sqlite3_stmt *pStmt, int eMode); + /* ** CAPI3REF: Determine If A Prepared Statement Has Been Reset ** METHOD: sqlite3_stmt ** ** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the -** [prepared statement] S has been stepped at least once using +** [prepared statement] S has been stepped at least once using ** [sqlite3_step(S)] but has neither run to completion (returned ** [SQLITE_DONE] from [sqlite3_step(S)]) nor ** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) -** interface returns false if S is a NULL pointer. If S is not a +** interface returns false if S is a NULL pointer. If S is not a ** NULL pointer and is not a pointer to a valid [prepared statement] ** object, then the behavior is undefined and probably undesirable. ** ** This interface can be used in combination [sqlite3_next_stmt()] -** to locate all prepared statements associated with a database +** to locate all prepared statements associated with a database ** connection that are in need of being reset. This can be used, -** for example, in diagnostic routines to search for prepared +** for example, in diagnostic routines to search for prepared ** statements that are holding a transaction open. */ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); @@ -4832,7 +4805,7 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** will accept either a protected or an unprotected sqlite3_value. ** Every interface that accepts sqlite3_value arguments specifies ** whether or not it requires a protected sqlite3_value. The -** [sqlite3_value_dup()] interface can be used to construct a new +** [sqlite3_value_dup()] interface can be used to construct a new ** protected sqlite3_value from an unprotected sqlite3_value. ** ** The terms "protected" and "unprotected" refer to whether or not @@ -4840,7 +4813,7 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** sqlite3_value object but no mutex is held for an unprotected ** sqlite3_value object. If SQLite is compiled to be single-threaded ** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0) -** or if SQLite is run in one of reduced mutex modes +** or if SQLite is run in one of reduced mutex modes ** [SQLITE_CONFIG_SINGLETHREAD] or [SQLITE_CONFIG_MULTITHREAD] ** then there is no distinction between protected and unprotected ** sqlite3_value objects and they can be used interchangeably. However, @@ -4850,6 +4823,8 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** ** ^The sqlite3_value objects that are passed as parameters into the ** implementation of [application-defined SQL functions] are protected. +** ^The sqlite3_value objects returned by [sqlite3_vtab_rhs_value()] +** are protected. ** ^The sqlite3_value object returned by ** [sqlite3_column_value()] is unprotected. ** Unprotected sqlite3_value objects may only be used as arguments @@ -4909,12 +4884,30 @@ typedef struct sqlite3_context sqlite3_context; ** [sqlite3_bind_parameter_index()] API if desired. ^The index ** for "?NNN" parameters is the value of NNN. ** ^The NNN value must be between 1 and the [sqlite3_limit()] -** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999). +** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 32766). ** ** ^The third argument is the value to bind to the parameter. ** ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16() ** or sqlite3_bind_blob() is a NULL pointer then the fourth parameter ** is ignored and the end result is the same as sqlite3_bind_null(). +** ^If the third parameter to sqlite3_bind_text() is not NULL, then +** it should be a pointer to well-formed UTF8 text. +** ^If the third parameter to sqlite3_bind_text16() is not NULL, then +** it should be a pointer to well-formed UTF16 text. +** ^If the third parameter to sqlite3_bind_text64() is not NULL, then +** it should be a pointer to a well-formed unicode string that is +** either UTF8 if the sixth parameter is SQLITE_UTF8, or UTF16 +** otherwise. +** +** [[byte-order determination rules]] ^The byte-order of +** UTF16 input text is determined by the byte-order mark (BOM, U+FEFF) +** found in first character, which is removed, or in the absence of a BOM +** the byte order is the native byte order of the host +** machine for sqlite3_bind_text16() or the byte order specified in +** the 6th parameter for sqlite3_bind_text64().)^ +** ^If UTF16 input text contains invalid unicode +** characters, then SQLite might change those invalid characters +** into the unicode replacement character: U+FFFD. ** ** ^(In those routines that have a fourth argument, its value is the ** number of bytes in the parameter. To be clear: the value is the @@ -4928,21 +4921,27 @@ typedef struct sqlite3_context sqlite3_context; ** or sqlite3_bind_text16() or sqlite3_bind_text64() then ** that parameter must be the byte offset ** where the NUL terminator would occur assuming the string were NUL -** terminated. If any NUL characters occur at byte offsets less than +** terminated. If any NUL characters occurs at byte offsets less than ** the value of the fourth parameter then the resulting string value will ** contain embedded NULs. The result of expressions involving strings ** with embedded NULs is undefined. ** -** ^The fifth argument to the BLOB and string binding interfaces -** is a destructor used to dispose of the BLOB or -** string after SQLite has finished with it. ^The destructor is called -** to dispose of the BLOB or string even if the call to bind API fails. -** ^If the fifth argument is -** the special value [SQLITE_STATIC], then SQLite assumes that the -** information is in static, unmanaged space and does not need to be freed. -** ^If the fifth argument has the value [SQLITE_TRANSIENT], then -** SQLite makes its own private copy of the data immediately, before -** the sqlite3_bind_*() routine returns. +** ^The fifth argument to the BLOB and string binding interfaces controls +** or indicates the lifetime of the object referenced by the third parameter. +** These three options exist: +** ^ (1) A destructor to dispose of the BLOB or string after SQLite has finished +** with it may be passed. ^It is called to dispose of the BLOB or string even +** if the call to the bind API fails, except the destructor is not called if +** the third parameter is a NULL pointer or the fourth parameter is negative. +** ^ (2) The special constant, [SQLITE_STATIC], may be passed to indicate that +** the application remains responsible for disposing of the object. ^In this +** case, the object and the provided pointer to it must remain valid until +** either the prepared statement is finalized or the same SQL parameter is +** bound to something else, whichever occurs sooner. +** ^ (3) The constant, [SQLITE_TRANSIENT], may be passed to indicate that the +** object is to be copied prior to the return from sqlite3_bind_*(). ^The +** object and pointer to it must remain valid until then. ^SQLite will then +** manage the lifetime of its private copy. ** ** ^The sixth argument to sqlite3_bind_text64() must be one of ** [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE] @@ -5088,7 +5087,7 @@ SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*); ** METHOD: sqlite3_stmt ** ** ^Return the number of columns in the result set returned by the -** [prepared statement]. ^If this routine returns 0, that means the +** [prepared statement]. ^If this routine returns 0, that means the ** [prepared statement] returns no data (for example an [UPDATE]). ** ^However, just because this routine returns a positive number does not ** mean that one or more rows of data will be returned. ^A SELECT statement @@ -5156,7 +5155,7 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); ** ** ^If the Nth column returned by the statement is an expression or ** subquery and is not a column value, then all of these functions return -** NULL. ^These routine might also return NULL if a memory allocation error +** NULL. ^These routines might also return NULL if a memory allocation error ** occurs. ^Otherwise, they return the name of the attached database, table, ** or column that query result column was extracted from. ** @@ -5166,10 +5165,6 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); ** ^These APIs are only available if the library was compiled with the ** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol. ** -** If two or more threads call one or more of these routines against the same -** prepared statement and column at the same time then the results are -** undefined. -** ** If two or more threads call one or more ** [sqlite3_column_database_name | column metadata interfaces] ** for the same [prepared statement] and result column @@ -5274,7 +5269,7 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); ** For all versions of SQLite up to and including 3.6.23.1, a call to ** [sqlite3_reset()] was required after sqlite3_step() returned anything ** other than [SQLITE_ROW] before any subsequent invocation of -** sqlite3_step(). Failure to reset the prepared statement using +** sqlite3_step(). Failure to reset the prepared statement using ** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from ** sqlite3_step(). But after [version 3.6.23.1] ([dateof:3.6.23.1], ** sqlite3_step() began @@ -5306,7 +5301,7 @@ SQLITE_API int sqlite3_step(sqlite3_stmt*); ** ^The sqlite3_data_count(P) interface returns the number of columns in the ** current row of the result set of [prepared statement] P. ** ^If prepared statement P does not have results ready to return -** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of +** (via calls to the [sqlite3_column_int | sqlite3_column()] family of ** interfaces) then sqlite3_data_count(P) returns 0. ** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. ** ^The sqlite3_data_count(P) routine returns 0 if the previous call to @@ -5365,7 +5360,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** sqlite3_column_int64→64-bit INTEGER result ** sqlite3_column_text→UTF-8 TEXT result ** sqlite3_column_text16→UTF-16 TEXT result -** sqlite3_column_value→The result as an +** sqlite3_column_value→The result as an ** [sqlite3_value|unprotected sqlite3_value] object. **     ** sqlite3_column_bytes→Size of a BLOB @@ -5413,7 +5408,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** The return value of sqlite3_column_type() can be used to decide which ** of the first six interface should be used to extract the column value. ** The value returned by sqlite3_column_type() is only meaningful if no -** automatic type conversions have occurred for the value in question. +** automatic type conversions have occurred for the value in question. ** After a type conversion, the result of calling sqlite3_column_type() ** is undefined, though harmless. Future ** versions of SQLite may change the behavior of sqlite3_column_type() @@ -5441,7 +5436,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** the number of bytes in that string. ** ^If the result is NULL, then sqlite3_column_bytes16() returns zero. ** -** ^The values returned by [sqlite3_column_bytes()] and +** ^The values returned by [sqlite3_column_bytes()] and ** [sqlite3_column_bytes16()] do not include the zero terminators at the end ** of the string. ^For clarity: the values returned by ** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of @@ -5451,6 +5446,10 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** even empty strings, are always zero-terminated. ^The return ** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer. ** +** ^Strings returned by sqlite3_column_text16() always have the endianness +** which is native to the platform, regardless of the text encoding set +** for the database. +** ** Warning: ^The object returned by [sqlite3_column_value()] is an ** [unprotected sqlite3_value] object. In a multithreaded environment, ** an unprotected sqlite3_value object may only be used safely with @@ -5460,11 +5459,11 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** to routines like [sqlite3_value_int()], [sqlite3_value_text()], ** or [sqlite3_value_bytes()], the behavior is not threadsafe. ** Hence, the sqlite3_column_value() interface -** is normally only useful within the implementation of +** is normally only useful within the implementation of ** [application-defined SQL functions] or [virtual tables], not within ** top-level application code. ** -** The these routines may attempt to convert the datatype of the result. +** These routines may attempt to convert the datatype of the result. ** ^For example, if the internal representation is FLOAT and a text result ** is requested, [sqlite3_snprintf()] is used internally to perform the ** conversion automatically. ^(The following table details the conversions @@ -5489,7 +5488,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** TEXT BLOB No change ** BLOB INTEGER [CAST] to INTEGER ** BLOB FLOAT [CAST] to REAL -** BLOB TEXT Add a zero terminator if needed +** BLOB TEXT [CAST] to TEXT, ensure zero terminator ** ** )^ ** @@ -5541,11 +5540,25 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into ** [sqlite3_free()]. ** -** ^(If a memory allocation error occurs during the evaluation of any -** of these routines, a default value is returned. The default value -** is either the integer 0, the floating point number 0.0, or a NULL -** pointer. Subsequent calls to [sqlite3_errcode()] will return -** [SQLITE_NOMEM].)^ +** As long as the input parameters are correct, these routines will only +** fail if an out-of-memory error occurs during a format conversion. +** Only the following subset of interfaces are subject to out-of-memory +** errors: +** +** +** +** If an out-of-memory error occurs, then the return value from these +** routines is the same as if the column had contained an SQL NULL value. +** Valid SQL NULL returns can be distinguished from out-of-memory errors +** by invoking the [sqlite3_errcode()] immediately after the suspect +** return value is obtained and before any +** other SQLite interface is called on the same [database connection]. */ SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol); SQLITE_API double sqlite3_column_double(sqlite3_stmt*, int iCol); @@ -5599,14 +5612,26 @@ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt); ** ^The [sqlite3_reset(S)] interface resets the [prepared statement] S ** back to the beginning of its program. ** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE], -** or if [sqlite3_step(S)] has never before been called on S, -** then [sqlite3_reset(S)] returns [SQLITE_OK]. +** ^The return code from [sqlite3_reset(S)] indicates whether or not +** the previous evaluation of prepared statement S completed successfully. +** ^If [sqlite3_step(S)] has never before been called on S or if +** [sqlite3_step(S)] has not been called since the previous call +** to [sqlite3_reset(S)], then [sqlite3_reset(S)] will return +** [SQLITE_OK]. ** ** ^If the most recent call to [sqlite3_step(S)] for the ** [prepared statement] S indicated an error, then ** [sqlite3_reset(S)] returns an appropriate [error code]. +** ^The [sqlite3_reset(S)] interface might also return an [error code] +** if there were no prior errors but the process of resetting +** the prepared statement caused a new error. ^For example, if an +** [INSERT] statement with a [RETURNING] clause is only stepped one time, +** that one call to [sqlite3_step(S)] might return SQLITE_ROW but +** the overall statement might still fail and the [sqlite3_reset(S)] call +** might return SQLITE_BUSY if locking constraints prevent the +** database change from committing. Therefore, it is important that +** applications check the return code from [sqlite3_reset(S)] even if +** no prior call to [sqlite3_step(S)] indicated a problem. ** ** ^The [sqlite3_reset(S)] interface does not change the values ** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S. @@ -5616,17 +5641,17 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); /* ** CAPI3REF: Create Or Redefine SQL Functions ** KEYWORDS: {function creation routines} -** KEYWORDS: {application-defined SQL function} -** KEYWORDS: {application-defined SQL functions} ** METHOD: sqlite3 ** ** ^These functions (collectively known as "function creation routines") ** are used to add SQL functions or aggregates or to redefine the behavior -** of existing SQL functions or aggregates. The only differences between -** these routines are the text encoding expected for -** the second parameter (the name of the function being created) -** and the presence or absence of a destructor callback for -** the application data pointer. +** of existing SQL functions or aggregates. The only differences between +** the three "sqlite3_create_function*" routines are the text encoding +** expected for the second parameter (the name of the function being +** created) and the presence or absence of a destructor callback for +** the application data pointer. Function sqlite3_create_window_function() +** is similar, but allows the user to supply the extra callback functions +** needed by [aggregate window functions]. ** ** ^The first parameter is the [database connection] to which the SQL ** function is to be added. ^If an application uses more than one database @@ -5636,7 +5661,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** ^The second parameter is the name of the SQL function to be created or ** redefined. ^The length of the name is limited to 255 bytes in a UTF-8 ** representation, exclusive of the zero-terminator. ^Note that the name -** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. +** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. ** ^Any attempt to create a function with a longer name ** will result in [SQLITE_MISUSE] being returned. ** @@ -5651,7 +5676,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** ^The fourth parameter, eTextRep, specifies what ** [SQLITE_UTF8 | text encoding] this SQL function prefers for ** its parameters. The application should set this parameter to -** [SQLITE_UTF16LE] if the function implementation invokes +** [SQLITE_UTF16LE] if the function implementation invokes ** [sqlite3_value_text16le()] on an input, or [SQLITE_UTF16BE] if the ** implementation invokes [sqlite3_value_text16be()] on an input, or ** [SQLITE_UTF16] if [sqlite3_value_text16()] is used, or [SQLITE_UTF8] @@ -5669,10 +5694,26 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** perform additional optimizations on deterministic functions, so use ** of the [SQLITE_DETERMINISTIC] flag is recommended where possible. ** +** ^The fourth parameter may also optionally include the [SQLITE_DIRECTONLY] +** flag, which if present prevents the function from being invoked from +** within VIEWs, TRIGGERs, CHECK constraints, generated column expressions, +** index expressions, or the WHERE clause of partial indexes. +** +** For best security, the [SQLITE_DIRECTONLY] flag is recommended for +** all application-defined SQL functions that do not need to be +** used inside of triggers, view, CHECK constraints, or other elements of +** the database schema. This flags is especially recommended for SQL +** functions that have side effects or reveal internal application state. +** Without this flag, an attacker might be able to modify the schema of +** a database file to include invocations of the function with parameters +** chosen by the attacker, which the application will then execute when +** the database file is opened and read. +** ** ^(The fifth parameter is an arbitrary pointer. The implementation of the ** function can gain access to this pointer using [sqlite3_user_data()].)^ ** -** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are +** ^The sixth, seventh and eighth parameters passed to the three +** "sqlite3_create_function*" functions, xFunc, xStep and xFinal, are ** pointers to C-language functions that implement the SQL function or ** aggregate. ^A scalar SQL function requires an implementation of the xFunc ** callback only; NULL pointers must be passed as the xStep and xFinal @@ -5681,15 +5722,24 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** SQL function or aggregate, pass NULL pointers for all three function ** callbacks. ** -** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL, -** then it is destructor for the application data pointer. -** The destructor is invoked when the function is deleted, either by being -** overloaded or when the database connection closes.)^ -** ^The destructor is also invoked if the call to -** sqlite3_create_function_v2() fails. -** ^When the destructor callback of the tenth parameter is invoked, it -** is passed a single argument which is a copy of the application data -** pointer which was the fifth parameter to sqlite3_create_function_v2(). +** ^The sixth, seventh, eighth and ninth parameters (xStep, xFinal, xValue +** and xInverse) passed to sqlite3_create_window_function are pointers to +** C-language callbacks that implement the new function. xStep and xFinal +** must both be non-NULL. xValue and xInverse may either both be NULL, in +** which case a regular aggregate function is created, or must both be +** non-NULL, in which case the new function may be used as either an aggregate +** or aggregate window function. More details regarding the implementation +** of aggregate window functions are +** [user-defined window functions|available here]. +** +** ^(If the final parameter to sqlite3_create_function_v2() or +** sqlite3_create_window_function() is not NULL, then it is destructor for +** the application data pointer. The destructor is invoked when the function +** is deleted, either by being overloaded or when the database connection +** closes.)^ ^The destructor is also invoked if the call to +** sqlite3_create_function_v2() fails. ^When the destructor callback is +** invoked, it is passed a single argument which is a copy of the application +** data pointer which was the fifth parameter to sqlite3_create_function_v2(). ** ** ^It is permitted to register multiple implementations of the same ** functions with the same name but with either differing numbers of @@ -5699,7 +5749,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** nArg parameter is a better match than a function implementation with ** a negative nArg. ^A function where the preferred text encoding ** matches the database encoding is a better -** match than a function where the encoding is different. +** match than a function where the encoding is different. ** ^A function where the encoding difference is between UTF16le and UTF16be ** is a closer match than a function where the encoding difference is ** between UTF8 and UTF16. @@ -5742,6 +5792,18 @@ SQLITE_API int sqlite3_create_function_v2( void (*xFinal)(sqlite3_context*), void(*xDestroy)(void*) ); +SQLITE_API int sqlite3_create_window_function( + sqlite3 *db, + const char *zFunctionName, + int nArg, + int eTextRep, + void *pApp, + void (*xStep)(sqlite3_context*,int,sqlite3_value**), + void (*xFinal)(sqlite3_context*), + void (*xValue)(sqlite3_context*), + void (*xInverse)(sqlite3_context*,int,sqlite3_value**), + void(*xDestroy)(void*) +); /* ** CAPI3REF: Text Encodings @@ -5759,19 +5821,90 @@ SQLITE_API int sqlite3_create_function_v2( /* ** CAPI3REF: Function Flags ** -** These constants may be ORed together with the +** These constants may be ORed together with the ** [SQLITE_UTF8 | preferred text encoding] as the fourth argument ** to [sqlite3_create_function()], [sqlite3_create_function16()], or ** [sqlite3_create_function_v2()]. +** +**
    +** [[SQLITE_DETERMINISTIC]]
    SQLITE_DETERMINISTIC
    +** The SQLITE_DETERMINISTIC flag means that the new function always gives +** the same output when the input parameters are the same. +** The [abs|abs() function] is deterministic, for example, but +** [randomblob|randomblob()] is not. Functions must +** be deterministic in order to be used in certain contexts such as +** with the WHERE clause of [partial indexes] or in [generated columns]. +** SQLite might also optimize deterministic functions by factoring them +** out of inner loops. +**
    +** +** [[SQLITE_DIRECTONLY]]
    SQLITE_DIRECTONLY
    +** The SQLITE_DIRECTONLY flag means that the function may only be invoked +** from top-level SQL, and cannot be used in VIEWs or TRIGGERs nor in +** schema structures such as [CHECK constraints], [DEFAULT clauses], +** [expression indexes], [partial indexes], or [generated columns]. +**

    +** The SQLITE_DIRECTONLY flag is recommended for any +** [application-defined SQL function] +** that has side-effects or that could potentially leak sensitive information. +** This will prevent attacks in which an application is tricked +** into using a database file that has had its schema surreptitiously +** modified to invoke the application-defined function in ways that are +** harmful. +**

    +** Some people say it is good practice to set SQLITE_DIRECTONLY on all +** [application-defined SQL functions], regardless of whether or not they +** are security sensitive, as doing so prevents those functions from being used +** inside of the database schema, and thus ensures that the database +** can be inspected and modified using generic tools (such as the [CLI]) +** that do not have access to the application-defined functions. +**

    +** +** [[SQLITE_INNOCUOUS]]
    SQLITE_INNOCUOUS
    +** The SQLITE_INNOCUOUS flag means that the function is unlikely +** to cause problems even if misused. An innocuous function should have +** no side effects and should not depend on any values other than its +** input parameters. The [abs|abs() function] is an example of an +** innocuous function. +** The [load_extension() SQL function] is not innocuous because of its +** side effects. +**

    SQLITE_INNOCUOUS is similar to SQLITE_DETERMINISTIC, but is not +** exactly the same. The [random|random() function] is an example of a +** function that is innocuous but not deterministic. +**

    Some heightened security settings +** ([SQLITE_DBCONFIG_TRUSTED_SCHEMA] and [PRAGMA trusted_schema=OFF]) +** disable the use of SQL functions inside views and triggers and in +** schema structures such as [CHECK constraints], [DEFAULT clauses], +** [expression indexes], [partial indexes], and [generated columns] unless +** the function is tagged with SQLITE_INNOCUOUS. Most built-in functions +** are innocuous. Developers are advised to avoid using the +** SQLITE_INNOCUOUS flag for application-defined functions unless the +** function has been carefully audited and found to be free of potentially +** security-adverse side-effects and information-leaks. +**

    +** +** [[SQLITE_SUBTYPE]]
    SQLITE_SUBTYPE
    +** The SQLITE_SUBTYPE flag indicates to SQLite that a function may call +** [sqlite3_value_subtype()] to inspect the sub-types of its arguments. +** Specifying this flag makes no difference for scalar or aggregate user +** functions. However, if it is not specified for a user-defined window +** function, then any sub-types belonging to arguments passed to the window +** function may be discarded before the window function is called (i.e. +** sqlite3_value_subtype() will always return 0). +**
    +**
    */ -#define SQLITE_DETERMINISTIC 0x800 +#define SQLITE_DETERMINISTIC 0x000000800 +#define SQLITE_DIRECTONLY 0x000080000 +#define SQLITE_SUBTYPE 0x000100000 +#define SQLITE_INNOCUOUS 0x000200000 /* ** CAPI3REF: Deprecated Functions ** DEPRECATED ** ** These functions are [deprecated]. In order to maintain -** backwards compatibility with older code, these functions continue +** backwards compatibility with older code, these functions continue ** to be supported. However, new applications should avoid ** the use of these functions. To encourage programmers to avoid ** these functions, we will not explain what they do. @@ -5815,14 +5948,16 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** sqlite3_value_nochange   ** →  True if the column is unchanged in an UPDATE ** against a virtual table. +** sqlite3_value_frombind   +** →  True if value originated from a [bound parameter] ** ** ** Details: ** ** These routines extract type, size, and content information from ** [protected sqlite3_value] objects. Protected sqlite3_value objects -** are used to pass parameter information into implementation of -** [application-defined SQL functions] and [virtual tables]. +** are used to pass parameter information into the functions that +** implement [application-defined SQL functions] and [virtual tables]. ** ** These routines work only with [protected sqlite3_value] objects. ** Any attempt to use these routines on an [unprotected sqlite3_value] @@ -5837,11 +5972,11 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces ** extract UTF-16 strings as big-endian and little-endian respectively. ** -** ^If [sqlite3_value] object V was initialized +** ^If [sqlite3_value] object V was initialized ** using [sqlite3_bind_pointer(S,I,P,X,D)] or [sqlite3_result_pointer(C,P,X,D)] ** and if X and Y are strings that compare equal according to strcmp(X,Y), ** then sqlite3_value_pointer(V,Y) will return the pointer P. ^Otherwise, -** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer() +** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer() ** routine is part of the [pointer passing interface] added for SQLite 3.20.0. ** ** ^(The sqlite3_value_type(V) interface returns the @@ -5876,6 +6011,11 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** than within an [xUpdate] method call for an UPDATE statement, then ** the return value is arbitrary and meaningless. ** +** ^The sqlite3_value_frombind(X) interface returns non-zero if the +** value X originated from one of the [sqlite3_bind_int|sqlite3_bind()] +** interfaces. ^If X comes from an SQL literal value, or a table column, +** or an expression, then sqlite3_value_frombind(X) returns zero. +** ** Please pay particular attention to the fact that the pointer returned ** from [sqlite3_value_blob()], [sqlite3_value_text()], or ** [sqlite3_value_text16()] can be invalidated by a subsequent call to @@ -5884,6 +6024,28 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** ** These routines must be called from the same thread as ** the SQL function that supplied the [sqlite3_value*] parameters. +** +** As long as the input parameter is correct, these routines can only +** fail if an out-of-memory error occurs during a format conversion. +** Only the following subset of interfaces are subject to out-of-memory +** errors: +** +** +** +** If an out-of-memory error occurs, then the return value from these +** routines is the same as if the column had contained an SQL NULL value. +** Valid SQL NULL returns can be distinguished from out-of-memory errors +** by invoking the [sqlite3_errcode()] immediately after the suspect +** return value is obtained and before any +** other SQLite interface is called on the same [database connection]. */ SQLITE_API const void *sqlite3_value_blob(sqlite3_value*); SQLITE_API double sqlite3_value_double(sqlite3_value*); @@ -5899,6 +6061,29 @@ SQLITE_API int sqlite3_value_bytes16(sqlite3_value*); SQLITE_API int sqlite3_value_type(sqlite3_value*); SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*); SQLITE_API int sqlite3_value_nochange(sqlite3_value*); +SQLITE_API int sqlite3_value_frombind(sqlite3_value*); + +/* +** CAPI3REF: Report the internal text encoding state of an sqlite3_value object +** METHOD: sqlite3_value +** +** ^(The sqlite3_value_encoding(X) interface returns one of [SQLITE_UTF8], +** [SQLITE_UTF16BE], or [SQLITE_UTF16LE] according to the current text encoding +** of the value X, assuming that X has type TEXT.)^ If sqlite3_value_type(X) +** returns something other than SQLITE_TEXT, then the return value from +** sqlite3_value_encoding(X) is meaningless. ^Calls to +** [sqlite3_value_text(X)], [sqlite3_value_text16(X)], [sqlite3_value_text16be(X)], +** [sqlite3_value_text16le(X)], [sqlite3_value_bytes(X)], or +** [sqlite3_value_bytes16(X)] might change the encoding of the value X and +** thus change the return from subsequent calls to sqlite3_value_encoding(X). +** +** This routine is intended for used by applications that test and validate +** the SQLite implementation. This routine is inquiring about the opaque +** internal state of an [sqlite3_value] object. Ordinary applications should +** not need to know what the internal state of an sqlite3_value object is and +** hence should not need to use this interface. +*/ +SQLITE_API int sqlite3_value_encoding(sqlite3_value*); /* ** CAPI3REF: Finding The Subtype Of SQL Values @@ -5920,7 +6105,8 @@ SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value*); ** object D and returns a pointer to that copy. ^The [sqlite3_value] returned ** is a [protected sqlite3_value] object even if the input is not. ** ^The sqlite3_value_dup(V) interface returns NULL if V is NULL or if a -** memory allocation fails. +** memory allocation fails. ^If V is a [pointer value], then the result +** of sqlite3_value_dup(V) is a NULL value. ** ** ^The sqlite3_value_free(V) interface frees an [sqlite3_value] object ** previously obtained from [sqlite3_value_dup()]. ^If V is a NULL pointer @@ -5936,9 +6122,9 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*); ** Implementations of aggregate SQL functions use this ** routine to allocate memory for storing their state. ** -** ^The first time the sqlite3_aggregate_context(C,N) routine is called -** for a particular aggregate function, SQLite -** allocates N of memory, zeroes out that memory, and returns a pointer +** ^The first time the sqlite3_aggregate_context(C,N) routine is called +** for a particular aggregate function, SQLite allocates +** N bytes of memory, zeroes out that memory, and returns a pointer ** to the new memory. ^On second and subsequent calls to ** sqlite3_aggregate_context() for the same aggregate function instance, ** the same buffer is returned. Sqlite3_aggregate_context() is normally @@ -5949,19 +6135,19 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*); ** In those cases, sqlite3_aggregate_context() might be called for the ** first time from within xFinal().)^ ** -** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer +** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer ** when first called if N is less than or equal to zero or if a memory -** allocate error occurs. +** allocation error occurs. ** ** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is ** determined by the N parameter on first successful call. Changing the -** value of N in subsequent call to sqlite3_aggregate_context() within +** value of N in any subsequent call to sqlite3_aggregate_context() within ** the same aggregate function instance will not resize the memory ** allocation.)^ Within the xFinal callback, it is customary to set -** N=0 in calls to sqlite3_aggregate_context(C,N) so that no +** N=0 in calls to sqlite3_aggregate_context(C,N) so that no ** pointless memory allocations occur. ** -** ^SQLite automatically frees the memory allocated by +** ^SQLite automatically frees the memory allocated by ** sqlite3_aggregate_context() when the aggregate query concludes. ** ** The first parameter must be a copy of the @@ -6011,7 +6197,7 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); ** some circumstances the associated metadata may be preserved. An example ** of where this might be useful is in a regular-expression matching ** function. The compiled version of the regular expression can be stored as -** metadata associated with the pattern string. +** metadata associated with the pattern string. ** Then as long as the pattern string remains the same, ** the compiled regular expression can be reused on multiple ** invocations of the same function. @@ -6037,10 +6223,10 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); ** SQL statement)^, or **
  • ^(when sqlite3_set_auxdata() is invoked again on the same ** parameter)^, or -**
  • ^(during the original sqlite3_set_auxdata() call when a memory +**
  • ^(during the original sqlite3_set_auxdata() call when a memory ** allocation error occurs.)^ ** -** Note the last bullet in particular. The destructor X in +** Note the last bullet in particular. The destructor X in ** sqlite3_set_auxdata(C,N,P,X) might be called immediately, before the ** sqlite3_set_auxdata() interface even returns. Hence sqlite3_set_auxdata() ** should be called near the end of the function implementation and the @@ -6112,8 +6298,9 @@ typedef void (*sqlite3_destructor_type)(void*); ** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16() ** as the text of an error message. ^SQLite interprets the error ** message string from sqlite3_result_error() as UTF-8. ^SQLite -** interprets the string from sqlite3_result_error16() as UTF-16 in native -** byte order. ^If the third parameter to sqlite3_result_error() +** interprets the string from sqlite3_result_error16() as UTF-16 using +** the same [byte-order determination rules] as [sqlite3_bind_text16()]. +** ^If the third parameter to sqlite3_result_error() ** or sqlite3_result_error16() is negative then SQLite takes as the error ** message all text up through the first zero character. ** ^If the third parameter to sqlite3_result_error() or @@ -6155,9 +6342,10 @@ typedef void (*sqlite3_destructor_type)(void*); ** of [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE]. ** ^SQLite takes the text result from the application from ** the 2nd parameter of the sqlite3_result_text* interfaces. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is negative, then SQLite takes result text from the 2nd parameter -** through the first zero character. +** ^If the 3rd parameter to any of the sqlite3_result_text* interfaces +** other than sqlite3_result_text64() is negative, then SQLite computes +** the string length itself by searching the 2nd parameter for the first +** zero character. ** ^If the 3rd parameter to the sqlite3_result_text* interfaces ** is non-negative, then as many bytes (not characters) of the text ** pointed to by the 2nd parameter are taken as the application-defined @@ -6181,6 +6369,25 @@ typedef void (*sqlite3_destructor_type)(void*); ** then SQLite makes a copy of the result into space obtained ** from [sqlite3_malloc()] before it returns. ** +** ^For the sqlite3_result_text16(), sqlite3_result_text16le(), and +** sqlite3_result_text16be() routines, and for sqlite3_result_text64() +** when the encoding is not UTF8, if the input UTF16 begins with a +** byte-order mark (BOM, U+FEFF) then the BOM is removed from the +** string and the rest of the string is interpreted according to the +** byte-order specified by the BOM. ^The byte-order specified by +** the BOM at the beginning of the text overrides the byte-order +** specified by the interface procedure. ^So, for example, if +** sqlite3_result_text16le() is invoked with text that begins +** with bytes 0xfe, 0xff (a big-endian byte-order mark) then the +** first two bytes of input are skipped and the remaining input +** is interpreted as UTF16BE text. +** +** ^For UTF16 input text to the sqlite3_result_text16(), +** sqlite3_result_text16be(), sqlite3_result_text16le(), and +** sqlite3_result_text64() routines, if the text contains invalid +** UTF16 characters, the invalid characters might be converted +** into the unicode replacement character, U+FFFD. +** ** ^The sqlite3_result_value() interface sets the result of ** the application-defined function to be a copy of the ** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The @@ -6193,7 +6400,7 @@ typedef void (*sqlite3_destructor_type)(void*); ** ** ^The sqlite3_result_pointer(C,P,T,D) interface sets the result to an ** SQL NULL value, just like [sqlite3_result_null(C)], except that it -** also associates the host-language pointer P or type T with that +** also associates the host-language pointer P or type T with that ** NULL value such that the pointer can be retrieved within an ** [application-defined SQL function] using [sqlite3_value_pointer()]. ** ^If the D parameter is not NULL, then it is a pointer to a destructor @@ -6235,8 +6442,8 @@ SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n); ** METHOD: sqlite3_context ** ** The sqlite3_result_subtype(C,T) function causes the subtype of -** the result from the [application-defined SQL function] with -** [sqlite3_context] C to be the value T. Only the lower 8 bits +** the result from the [application-defined SQL function] with +** [sqlite3_context] C to be the value T. Only the lower 8 bits ** of the subtype T are preserved in current versions of SQLite; ** higher order bits are discarded. ** The number of subtype bytes preserved by SQLite might increase @@ -6266,7 +6473,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); **
  • [SQLITE_UTF16_ALIGNED]. ** )^ ** ^The eTextRep argument determines the encoding of strings passed -** to the collating function callback, xCallback. +** to the collating function callback, xCompare. ** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep ** force strings to be UTF16 with native byte order. ** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin @@ -6275,18 +6482,19 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** ^The fourth argument, pArg, is an application data pointer that is passed ** through as the first argument to the collating function callback. ** -** ^The fifth argument, xCallback, is a pointer to the collating function. +** ^The fifth argument, xCompare, is a pointer to the collating function. ** ^Multiple collating functions can be registered using the same name but ** with different eTextRep parameters and SQLite will use whichever ** function requires the least amount of data transformation. -** ^If the xCallback argument is NULL then the collating function is +** ^If the xCompare argument is NULL then the collating function is ** deleted. ^When all collating functions having the same name are deleted, ** that collation is no longer usable. ** -** ^The collating function callback is invoked with a copy of the pArg +** ^The collating function callback is invoked with a copy of the pArg ** application data pointer and with two strings in the encoding specified -** by the eTextRep argument. The collating function must return an -** integer that is negative, zero, or positive +** by the eTextRep argument. The two integer parameters to the collating +** function callback are the length of the two strings, in bytes. The collating +** function must return an integer that is negative, zero, or positive ** if the first string is less than, equal to, or greater than the second, ** respectively. A collating function must always return the same answer ** given the same inputs. If two or more collating functions are registered @@ -6303,7 +6511,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** ** ** If a collating function fails any of the above constraints and that -** collating function is registered and used, then the behavior of SQLite +** collating function is registered and used, then the behavior of SQLite ** is undefined. ** ** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation() @@ -6313,36 +6521,36 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); ** calls to the collation creation functions or when the ** [database connection] is closed using [sqlite3_close()]. ** -** ^The xDestroy callback is not called if the +** ^The xDestroy callback is not called if the ** sqlite3_create_collation_v2() function fails. Applications that invoke -** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should +** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should ** check the return code and dispose of the application data pointer ** themselves rather than expecting SQLite to deal with it for them. -** This is different from every other SQLite interface. The inconsistency -** is unfortunate but cannot be changed without breaking backwards +** This is different from every other SQLite interface. The inconsistency +** is unfortunate but cannot be changed without breaking backwards ** compatibility. ** ** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()]. */ SQLITE_API int sqlite3_create_collation( - sqlite3*, - const char *zName, - int eTextRep, + sqlite3*, + const char *zName, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*) ); SQLITE_API int sqlite3_create_collation_v2( - sqlite3*, - const char *zName, - int eTextRep, + sqlite3*, + const char *zName, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*), void(*xDestroy)(void*) ); SQLITE_API int sqlite3_create_collation16( - sqlite3*, + sqlite3*, const void *zName, - int eTextRep, + int eTextRep, void *pArg, int(*xCompare)(void*,int,const void*,int,const void*) ); @@ -6375,64 +6583,19 @@ SQLITE_API int sqlite3_create_collation16( ** [sqlite3_create_collation_v2()]. */ SQLITE_API int sqlite3_collation_needed( - sqlite3*, - void*, + sqlite3*, + void*, void(*)(void*,sqlite3*,int eTextRep,const char*) ); SQLITE_API int sqlite3_collation_needed16( - sqlite3*, + sqlite3*, void*, void(*)(void*,sqlite3*,int eTextRep,const void*) ); -#ifdef SQLITE_HAS_CODEC -/* -** Specify the key for an encrypted database. This routine should be -** called right after sqlite3_open(). -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_key( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The key */ -); -SQLITE_API int sqlite3_key_v2( - sqlite3 *db, /* Database to be rekeyed */ - const char *zDbName, /* Name of the database */ - const void *pKey, int nKey /* The key */ -); - -/* -** Change the key on an open database. If the current database is not -** encrypted, this routine will encrypt it. If pNew==0 or nNew==0, the -** database is decrypted. -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_rekey( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The new key */ -); -SQLITE_API int sqlite3_rekey_v2( - sqlite3 *db, /* Database to be rekeyed */ - const char *zDbName, /* Name of the database */ - const void *pKey, int nKey /* The new key */ -); - -/* -** Specify the activation key for a SEE database. Unless -** activated, none of the SEE routines will work. -*/ -SQLITE_API void sqlite3_activate_see( - const char *zPassPhrase /* Activation phrase */ -); -#endif - #ifdef SQLITE_ENABLE_CEROD /* -** Specify the activation key for a CEROD database. Unless +** Specify the activation key for a CEROD database. Unless ** activated, none of the CEROD routines will work. */ SQLITE_API void sqlite3_activate_cerod( @@ -6456,6 +6619,13 @@ SQLITE_API void sqlite3_activate_cerod( ** of the default VFS is not implemented correctly, or not implemented at ** all, then the behavior of sqlite3_sleep() may deviate from the description ** in the previous paragraphs. +** +** If a negative argument is passed to sqlite3_sleep() the results vary by +** VFS and operating system. Some system treat a negative argument as an +** instruction to sleep forever. Others understand it to mean do not sleep +** at all. ^In SQLite version 3.42.0 and later, a negative +** argument passed into sqlite3_sleep() is changed to zero before it is relayed +** down into the xSleep method of the VFS. */ SQLITE_API int sqlite3_sleep(int); @@ -6488,7 +6658,7 @@ SQLITE_API int sqlite3_sleep(int); ** ^The [temp_store_directory pragma] may modify this variable and cause ** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, ** the [temp_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from +** that this variable points to is held in memory obtained from ** [sqlite3_malloc] and the pragma may attempt to free that memory ** using [sqlite3_free]. ** Hence, if this variable is modified directly, either it should be @@ -6545,7 +6715,7 @@ SQLITE_API char *sqlite3_temp_directory; ** ^The [data_store_directory pragma] may modify this variable and cause ** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, ** the [data_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from +** that this variable points to is held in memory obtained from ** [sqlite3_malloc] and the pragma may attempt to free that memory ** using [sqlite3_free]. ** Hence, if this variable is modified directly, either it should be @@ -6626,22 +6796,59 @@ SQLITE_API int sqlite3_get_autocommit(sqlite3*); */ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*); +/* +** CAPI3REF: Return The Schema Name For A Database Connection +** METHOD: sqlite3 +** +** ^The sqlite3_db_name(D,N) interface returns a pointer to the schema name +** for the N-th database on database connection D, or a NULL pointer of N is +** out of range. An N value of 0 means the main database file. An N of 1 is +** the "temp" schema. Larger values of N correspond to various ATTACH-ed +** databases. +** +** Space to hold the string that is returned by sqlite3_db_name() is managed +** by SQLite itself. The string might be deallocated by any operation that +** changes the schema, including [ATTACH] or [DETACH] or calls to +** [sqlite3_serialize()] or [sqlite3_deserialize()], even operations that +** occur on a different thread. Applications that need to +** remember the string long-term should make their own copy. Applications that +** are accessing the same database connection simultaneously on multiple +** threads should mutex-protect calls to this API and should make their own +** private copy of the result prior to releasing the mutex. +*/ +SQLITE_API const char *sqlite3_db_name(sqlite3 *db, int N); + /* ** CAPI3REF: Return The Filename For A Database Connection ** METHOD: sqlite3 ** -** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename -** associated with database N of connection D. ^The main database file -** has the name "main". If there is no attached database N on the database +** ^The sqlite3_db_filename(D,N) interface returns a pointer to the filename +** associated with database N of connection D. +** ^If there is no attached database N on the database ** connection D, or if database N is a temporary or in-memory database, then -** a NULL pointer is returned. +** this function will return either a NULL pointer or an empty string. +** +** ^The string value returned by this routine is owned and managed by +** the database connection. ^The value will be valid until the database N +** is [DETACH]-ed or until the database connection closes. ** ** ^The filename returned by this function is the output of the ** xFullPathname method of the [VFS]. ^In other words, the filename ** will be an absolute pathname, even if the filename used ** to open the database originally was a URI or relative pathname. +** +** If the filename pointer returned by this routine is not NULL, then it +** can be used as the filename input parameter to these routines: +** */ -SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); +SQLITE_API sqlite3_filename sqlite3_db_filename(sqlite3 *db, const char *zDbName); /* ** CAPI3REF: Determine if a database is read-only @@ -6653,6 +6860,57 @@ SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); */ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName); +/* +** CAPI3REF: Determine the transaction state of a database +** METHOD: sqlite3 +** +** ^The sqlite3_txn_state(D,S) interface returns the current +** [transaction state] of schema S in database connection D. ^If S is NULL, +** then the highest transaction state of any schema on database connection D +** is returned. Transaction states are (in order of lowest to highest): +**
      +**
    1. SQLITE_TXN_NONE +**
    2. SQLITE_TXN_READ +**
    3. SQLITE_TXN_WRITE +**
    +** ^If the S argument to sqlite3_txn_state(D,S) is not the name of +** a valid schema, then -1 is returned. +*/ +SQLITE_API int sqlite3_txn_state(sqlite3*,const char *zSchema); + +/* +** CAPI3REF: Allowed return values from [sqlite3_txn_state()] +** KEYWORDS: {transaction state} +** +** These constants define the current transaction state of a database file. +** ^The [sqlite3_txn_state(D,S)] interface returns one of these +** constants in order to describe the transaction state of schema S +** in [database connection] D. +** +**
    +** [[SQLITE_TXN_NONE]]
    SQLITE_TXN_NONE
    +**
    The SQLITE_TXN_NONE state means that no transaction is currently +** pending.
    +** +** [[SQLITE_TXN_READ]]
    SQLITE_TXN_READ
    +**
    The SQLITE_TXN_READ state means that the database is currently +** in a read transaction. Content has been read from the database file +** but nothing in the database file has changed. The transaction state +** will advanced to SQLITE_TXN_WRITE if any changes occur and there are +** no other conflicting concurrent write transactions. The transaction +** state will revert to SQLITE_TXN_NONE following a [ROLLBACK] or +** [COMMIT].
    +** +** [[SQLITE_TXN_WRITE]]
    SQLITE_TXN_WRITE
    +**
    The SQLITE_TXN_WRITE state means that the database is currently +** in a write transaction. Content has been written to the database file +** but has not yet committed. The transaction state will change to +** to SQLITE_TXN_NONE at the next [ROLLBACK] or [COMMIT].
    +*/ +#define SQLITE_TXN_NONE 0 +#define SQLITE_TXN_READ 1 +#define SQLITE_TXN_WRITE 2 + /* ** CAPI3REF: Find the next prepared statement ** METHOD: sqlite3 @@ -6719,6 +6977,72 @@ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*); SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); +/* +** CAPI3REF: Autovacuum Compaction Amount Callback +** METHOD: sqlite3 +** +** ^The sqlite3_autovacuum_pages(D,C,P,X) interface registers a callback +** function C that is invoked prior to each autovacuum of the database +** file. ^The callback is passed a copy of the generic data pointer (P), +** the schema-name of the attached database that is being autovacuumed, +** the size of the database file in pages, the number of free pages, +** and the number of bytes per page, respectively. The callback should +** return the number of free pages that should be removed by the +** autovacuum. ^If the callback returns zero, then no autovacuum happens. +** ^If the value returned is greater than or equal to the number of +** free pages, then a complete autovacuum happens. +** +**

    ^If there are multiple ATTACH-ed database files that are being +** modified as part of a transaction commit, then the autovacuum pages +** callback is invoked separately for each file. +** +**

    The callback is not reentrant. The callback function should +** not attempt to invoke any other SQLite interface. If it does, bad +** things may happen, including segmentation faults and corrupt database +** files. The callback function should be a simple function that +** does some arithmetic on its input parameters and returns a result. +** +** ^The X parameter to sqlite3_autovacuum_pages(D,C,P,X) is an optional +** destructor for the P parameter. ^If X is not NULL, then X(P) is +** invoked whenever the database connection closes or when the callback +** is overwritten by another invocation of sqlite3_autovacuum_pages(). +** +**

    ^There is only one autovacuum pages callback per database connection. +** ^Each call to the sqlite3_autovacuum_pages() interface overrides all +** previous invocations for that database connection. ^If the callback +** argument (C) to sqlite3_autovacuum_pages(D,C,P,X) is a NULL pointer, +** then the autovacuum steps callback is cancelled. The return value +** from sqlite3_autovacuum_pages() is normally SQLITE_OK, but might +** be some other error code if something goes wrong. The current +** implementation will only return SQLITE_OK or SQLITE_MISUSE, but other +** return codes might be added in future releases. +** +**

    If no autovacuum pages callback is specified (the usual case) or +** a NULL pointer is provided for the callback, +** then the default behavior is to vacuum all free pages. So, in other +** words, the default behavior is the same as if the callback function +** were something like this: +** +** 

    +**     unsigned int demonstration_autovac_pages_callback(
+**       void *pClientData,
+**       const char *zSchema,
+**       unsigned int nDbPage,
+**       unsigned int nFreePage,
+**       unsigned int nBytePerPage
+**     ){
+**       return nFreePage;
+**     }
+**
    +*/ +SQLITE_API int sqlite3_autovacuum_pages( + sqlite3 *db, + unsigned int(*)(void*,const char*,unsigned int,unsigned int,unsigned int), + void*, + void(*)(void*) +); + + /* ** CAPI3REF: Data Change Notification Callbacks ** METHOD: sqlite3 @@ -6743,7 +7067,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** ^In the case of an update, this is the [rowid] after the update takes place. ** ** ^(The update hook is not invoked when internal system tables are -** modified (i.e. sqlite_master and sqlite_sequence).)^ +** modified (i.e. sqlite_sequence).)^ ** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified. ** ** ^In the current implementation, the update hook @@ -6769,7 +7093,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** and [sqlite3_preupdate_hook()] interfaces. */ SQLITE_API void *sqlite3_update_hook( - sqlite3*, + sqlite3*, void(*)(void *,int ,char const *,char const *,sqlite3_int64), void* ); @@ -6782,26 +7106,35 @@ SQLITE_API void *sqlite3_update_hook( ** to the same database. Sharing is enabled if the argument is true ** and disabled if the argument is false.)^ ** +** This interface is omitted if SQLite is compiled with +** [-DSQLITE_OMIT_SHARED_CACHE]. The [-DSQLITE_OMIT_SHARED_CACHE] +** compile-time option is recommended because the +** [use of shared cache mode is discouraged]. +** ** ^Cache sharing is enabled and disabled for an entire process. -** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]). +** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]). ** In prior versions of SQLite, ** sharing was enabled or disabled for each thread separately. ** ** ^(The cache sharing mode set by this interface effects all subsequent ** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()]. -** Existing database connections continue use the sharing mode +** Existing database connections continue to use the sharing mode ** that was in effect at the time they were opened.)^ ** ** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled ** successfully. An [error code] is returned otherwise.)^ ** -** ^Shared cache is disabled by default. But this might change in -** future releases of SQLite. Applications that care about shared -** cache setting should set it explicitly. +** ^Shared cache is disabled by default. It is recommended that it stay +** that way. In other words, do not use this routine. This interface +** continues to be provided for historical compatibility, but its use is +** discouraged. Any use of shared cache is discouraged. If shared cache +** must be used, it is recommended that shared cache only be enabled for +** individual database connections using the [sqlite3_open_v2()] interface +** with the [SQLITE_OPEN_SHAREDCACHE] flag. ** ** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0 -** and will always return SQLITE_MISUSE. On those systems, -** shared cache mode should be enabled per-database connection via +** and will always return SQLITE_MISUSE. On those systems, +** shared cache mode should be enabled per-database connection via ** [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE]. ** ** This interface is threadsafe on processors where writing a @@ -6844,6 +7177,9 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*); /* ** CAPI3REF: Impose A Limit On Heap Size ** +** These interfaces impose limits on the amount of heap memory that will be +** by all database connections within a single process. +** ** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the ** soft limit on the amount of heap memory that may be allocated by SQLite. ** ^SQLite strives to keep heap memory utilization below the soft heap @@ -6851,23 +7187,44 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*); ** as heap memory usages approaches the limit. ** ^The soft heap limit is "soft" because even though SQLite strives to stay ** below the limit, it will exceed the limit rather than generate -** an [SQLITE_NOMEM] error. In other words, the soft heap limit +** an [SQLITE_NOMEM] error. In other words, the soft heap limit ** is advisory only. ** -** ^The return value from sqlite3_soft_heap_limit64() is the size of -** the soft heap limit prior to the call, or negative in the case of an +** ^The sqlite3_hard_heap_limit64(N) interface sets a hard upper bound of +** N bytes on the amount of memory that will be allocated. ^The +** sqlite3_hard_heap_limit64(N) interface is similar to +** sqlite3_soft_heap_limit64(N) except that memory allocations will fail +** when the hard heap limit is reached. +** +** ^The return value from both sqlite3_soft_heap_limit64() and +** sqlite3_hard_heap_limit64() is the size of +** the heap limit prior to the call, or negative in the case of an ** error. ^If the argument N is negative -** then no change is made to the soft heap limit. Hence, the current -** size of the soft heap limit can be determined by invoking -** sqlite3_soft_heap_limit64() with a negative argument. +** then no change is made to the heap limit. Hence, the current +** size of heap limits can be determined by invoking +** sqlite3_soft_heap_limit64(-1) or sqlite3_hard_heap_limit(-1). ** -** ^If the argument N is zero then the soft heap limit is disabled. +** ^Setting the heap limits to zero disables the heap limiter mechanism. ** -** ^(The soft heap limit is not enforced in the current implementation +** ^The soft heap limit may not be greater than the hard heap limit. +** ^If the hard heap limit is enabled and if sqlite3_soft_heap_limit(N) +** is invoked with a value of N that is greater than the hard heap limit, +** the soft heap limit is set to the value of the hard heap limit. +** ^The soft heap limit is automatically enabled whenever the hard heap +** limit is enabled. ^When sqlite3_hard_heap_limit64(N) is invoked and +** the soft heap limit is outside the range of 1..N, then the soft heap +** limit is set to N. ^Invoking sqlite3_soft_heap_limit64(0) when the +** hard heap limit is enabled makes the soft heap limit equal to the +** hard heap limit. +** +** The memory allocation limits can also be adjusted using +** [PRAGMA soft_heap_limit] and [PRAGMA hard_heap_limit]. +** +** ^(The heap limits are not enforced in the current implementation ** if one or more of following conditions are true: ** ** )^ ** -** Beginning with SQLite [version 3.7.3] ([dateof:3.7.3]), -** the soft heap limit is enforced -** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT] -** compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT], -** the soft heap limit is enforced on every memory allocation. Without -** [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced -** when memory is allocated by the page cache. Testing suggests that because -** the page cache is the predominate memory user in SQLite, most -** applications will achieve adequate soft heap limit enforcement without -** the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -** -** The circumstances under which SQLite will enforce the soft heap limit may +** The circumstances under which SQLite will enforce the heap limits may ** changes in future releases of SQLite. */ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N); +SQLITE_API sqlite3_int64 sqlite3_hard_heap_limit64(sqlite3_int64 N); /* ** CAPI3REF: Deprecated Soft Heap Limit Interface @@ -6916,7 +7263,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); ** interface returns SQLITE_OK and fills in the non-NULL pointers in ** the final five arguments with appropriate values if the specified ** column exists. ^The sqlite3_table_column_metadata() interface returns -** SQLITE_ERROR and if the specified column does not exist. +** SQLITE_ERROR if the specified column does not exist. ** ^If the column-name parameter to sqlite3_table_column_metadata() is a ** NULL pointer, then this routine simply checks for the existence of the ** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it @@ -6956,7 +7303,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); ** ** ^If the specified table is actually a view, an [error code] is returned. ** -** ^If the specified column is "rowid", "oid" or "_rowid_" and the table +** ^If the specified column is "rowid", "oid" or "_rowid_" and the table ** is not a [WITHOUT ROWID] table and an ** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output ** parameters are set for the explicitly declared column. ^(If there is no @@ -7022,7 +7369,7 @@ SQLITE_API int sqlite3_table_column_metadata( ** prior to calling this API, ** otherwise an error will be returned. ** -** Security warning: It is recommended that the +** Security warning: It is recommended that the ** [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this ** interface. The use of the [sqlite3_enable_load_extension()] interface ** should be avoided. This will keep the SQL function [load_extension()] @@ -7058,7 +7405,7 @@ SQLITE_API int sqlite3_load_extension( ** to enable or disable only the C-API.)^ ** ** Security warning: It is recommended that extension loading -** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method +** be enabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method ** rather than this interface, so the [load_extension()] SQL function ** remains disabled. This will prevent SQL injections from giving attackers ** access to extension loading capabilities. @@ -7109,7 +7456,7 @@ SQLITE_API int sqlite3_auto_extension(void(*xEntryPoint)(void)); ** ^The [sqlite3_cancel_auto_extension(X)] interface unregisters the ** initialization routine X that was registered using a prior call to ** [sqlite3_auto_extension(X)]. ^The [sqlite3_cancel_auto_extension(X)] -** routine returns 1 if initialization routine X was successfully +** routine returns 1 if initialization routine X was successfully ** unregistered and it returns 0 if X was not on the list of initialization ** routines. */ @@ -7123,15 +7470,6 @@ SQLITE_API int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void)); */ SQLITE_API void sqlite3_reset_auto_extension(void); -/* -** The interface to the virtual-table mechanism is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - /* ** Structures used by the virtual table interface */ @@ -7144,8 +7482,8 @@ typedef struct sqlite3_module sqlite3_module; ** CAPI3REF: Virtual Table Object ** KEYWORDS: sqlite3_module {virtual table module} ** -** This structure, sometimes called a "virtual table module", -** defines the implementation of a [virtual tables]. +** This structure, sometimes called a "virtual table module", +** defines the implementation of a [virtual table]. ** This structure consists mostly of methods for the module. ** ** ^A virtual table module is created by filling in a persistent @@ -7184,11 +7522,14 @@ struct sqlite3_module { void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), void **ppArg); int (*xRename)(sqlite3_vtab *pVtab, const char *zNew); - /* The methods above are in version 1 of the sqlite_module object. Those + /* The methods above are in version 1 of the sqlite_module object. Those ** below are for version 2 and greater. */ int (*xSavepoint)(sqlite3_vtab *pVTab, int); int (*xRelease)(sqlite3_vtab *pVTab, int); int (*xRollbackTo)(sqlite3_vtab *pVTab, int); + /* The methods above are in versions 1 and 2 of the sqlite_module object. + ** Those below are for version 3 and greater. */ + int (*xShadowName)(const char*); }; /* @@ -7231,7 +7572,7 @@ struct sqlite3_module { ** required by SQLite. If the table has at least 64 columns and any column ** to the right of the first 63 is required, then bit 63 of colUsed is also ** set. In other words, column iCol may be required if the expression -** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to +** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to ** non-zero. ** ** The [xBestIndex] method must fill aConstraintUsage[] with information @@ -7239,12 +7580,18 @@ struct sqlite3_module { ** the right-hand side of the corresponding aConstraint[] is evaluated ** and becomes the argvIndex-th entry in argv. ^(If aConstraintUsage[].omit ** is true, then the constraint is assumed to be fully handled by the -** virtual table and is not checked again by SQLite.)^ +** virtual table and might not be checked again by the byte code.)^ ^(The +** aConstraintUsage[].omit flag is an optimization hint. When the omit flag +** is left in its default setting of false, the constraint will always be +** checked separately in byte code. If the omit flag is change to true, then +** the constraint may or may not be checked in byte code. In other words, +** when the omit flag is true there is no guarantee that the constraint will +** not be checked again using byte code.)^ ** -** ^The idxNum and idxPtr values are recorded and passed into the +** ^The idxNum and idxStr values are recorded and passed into the ** [xFilter] method. -** ^[sqlite3_free()] is used to free idxPtr if and only if -** needToFreeIdxPtr is true. +** ^[sqlite3_free()] is used to free idxStr if and only if +** needToFreeIdxStr is true. ** ** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in ** the correct order to satisfy the ORDER BY clause so that no separate @@ -7252,17 +7599,17 @@ struct sqlite3_module { ** ** ^The estimatedCost value is an estimate of the cost of a particular ** strategy. A cost of N indicates that the cost of the strategy is similar -** to a linear scan of an SQLite table with N rows. A cost of log(N) +** to a linear scan of an SQLite table with N rows. A cost of log(N) ** indicates that the expense of the operation is similar to that of a ** binary search on a unique indexed field of an SQLite table with N rows. ** ** ^The estimatedRows value is an estimate of the number of rows that ** will be returned by the strategy. ** -** The xBestIndex method may optionally populate the idxFlags field with a +** The xBestIndex method may optionally populate the idxFlags field with a ** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag - ** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite -** assumes that the strategy may visit at most one row. +** assumes that the strategy may visit at most one row. ** ** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then ** SQLite also assumes that if a call to the xUpdate() method is made as @@ -7275,14 +7622,14 @@ struct sqlite3_module { ** the xUpdate method are automatically rolled back by SQLite. ** ** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info -** structure for SQLite [version 3.8.2] ([dateof:3.8.2]). +** structure for SQLite [version 3.8.2] ([dateof:3.8.2]). ** If a virtual table extension is -** used with an SQLite version earlier than 3.8.2, the results of attempting -** to read or write the estimatedRows field are undefined (but are likely -** to included crashing the application). The estimatedRows field should +** used with an SQLite version earlier than 3.8.2, the results of attempting +** to read or write the estimatedRows field are undefined (but are likely +** to include crashing the application). The estimatedRows field should ** therefore only be used if [sqlite3_libversion_number()] returns a ** value greater than or equal to 3008002. Similarly, the idxFlags field -** was added for [version 3.9.0] ([dateof:3.9.0]). +** was added for [version 3.9.0] ([dateof:3.9.0]). ** It may therefore only be used if ** sqlite3_libversion_number() returns a value greater than or equal to ** 3009000. @@ -7322,7 +7669,7 @@ struct sqlite3_index_info { /* ** CAPI3REF: Virtual Table Scan Flags ** -** Virtual table implementations are allowed to set the +** Virtual table implementations are allowed to set the ** [sqlite3_index_info].idxFlags field to some combination of ** these bits. */ @@ -7331,25 +7678,58 @@ struct sqlite3_index_info { /* ** CAPI3REF: Virtual Table Constraint Operator Codes ** -** These macros defined the allowed values for the +** These macros define the allowed values for the ** [sqlite3_index_info].aConstraint[].op field. Each value represents -** an operator that is part of a constraint term in the wHERE clause of +** an operator that is part of a constraint term in the WHERE clause of ** a query that uses a [virtual table]. +** +** ^The left-hand operand of the operator is given by the corresponding +** aConstraint[].iColumn field. ^An iColumn of -1 indicates the left-hand +** operand is the rowid. +** The SQLITE_INDEX_CONSTRAINT_LIMIT and SQLITE_INDEX_CONSTRAINT_OFFSET +** operators have no left-hand operand, and so for those operators the +** corresponding aConstraint[].iColumn is meaningless and should not be +** used. +** +** All operator values from SQLITE_INDEX_CONSTRAINT_FUNCTION through +** value 255 are reserved to represent functions that are overloaded +** by the [xFindFunction|xFindFunction method] of the virtual table +** implementation. +** +** The right-hand operands for each constraint might be accessible using +** the [sqlite3_vtab_rhs_value()] interface. Usually the right-hand +** operand is only available if it appears as a single constant literal +** in the input SQL. If the right-hand operand is another column or an +** expression (even a constant expression) or a parameter, then the +** sqlite3_vtab_rhs_value() probably will not be able to extract it. +** ^The SQLITE_INDEX_CONSTRAINT_ISNULL and +** SQLITE_INDEX_CONSTRAINT_ISNOTNULL operators have no right-hand operand +** and hence calls to sqlite3_vtab_rhs_value() for those operators will +** always return SQLITE_NOTFOUND. +** +** The collating sequence to be used for comparison can be found using +** the [sqlite3_vtab_collation()] interface. For most real-world virtual +** tables, the collating sequence of constraints does not matter (for example +** because the constraints are numeric) and so the sqlite3_vtab_collation() +** interface is not commonly needed. */ -#define SQLITE_INDEX_CONSTRAINT_EQ 2 -#define SQLITE_INDEX_CONSTRAINT_GT 4 -#define SQLITE_INDEX_CONSTRAINT_LE 8 -#define SQLITE_INDEX_CONSTRAINT_LT 16 -#define SQLITE_INDEX_CONSTRAINT_GE 32 -#define SQLITE_INDEX_CONSTRAINT_MATCH 64 -#define SQLITE_INDEX_CONSTRAINT_LIKE 65 -#define SQLITE_INDEX_CONSTRAINT_GLOB 66 -#define SQLITE_INDEX_CONSTRAINT_REGEXP 67 -#define SQLITE_INDEX_CONSTRAINT_NE 68 -#define SQLITE_INDEX_CONSTRAINT_ISNOT 69 -#define SQLITE_INDEX_CONSTRAINT_ISNOTNULL 70 -#define SQLITE_INDEX_CONSTRAINT_ISNULL 71 -#define SQLITE_INDEX_CONSTRAINT_IS 72 +#define SQLITE_INDEX_CONSTRAINT_EQ 2 +#define SQLITE_INDEX_CONSTRAINT_GT 4 +#define SQLITE_INDEX_CONSTRAINT_LE 8 +#define SQLITE_INDEX_CONSTRAINT_LT 16 +#define SQLITE_INDEX_CONSTRAINT_GE 32 +#define SQLITE_INDEX_CONSTRAINT_MATCH 64 +#define SQLITE_INDEX_CONSTRAINT_LIKE 65 +#define SQLITE_INDEX_CONSTRAINT_GLOB 66 +#define SQLITE_INDEX_CONSTRAINT_REGEXP 67 +#define SQLITE_INDEX_CONSTRAINT_NE 68 +#define SQLITE_INDEX_CONSTRAINT_ISNOT 69 +#define SQLITE_INDEX_CONSTRAINT_ISNOTNULL 70 +#define SQLITE_INDEX_CONSTRAINT_ISNULL 71 +#define SQLITE_INDEX_CONSTRAINT_IS 72 +#define SQLITE_INDEX_CONSTRAINT_LIMIT 73 +#define SQLITE_INDEX_CONSTRAINT_OFFSET 74 +#define SQLITE_INDEX_CONSTRAINT_FUNCTION 150 /* ** CAPI3REF: Register A Virtual Table Implementation @@ -7361,7 +7741,7 @@ struct sqlite3_index_info { ** preexisting [virtual table] for the module. ** ** ^The module name is registered on the [database connection] specified -** by the first parameter. ^The name of the module is given by the +** by the first parameter. ^The name of the module is given by the ** second parameter. ^The third parameter is a pointer to ** the implementation of the [virtual table module]. ^The fourth ** parameter is an arbitrary client data pointer that is passed through @@ -7376,6 +7756,12 @@ struct sqlite3_index_info { ** ^The sqlite3_create_module() ** interface is equivalent to sqlite3_create_module_v2() with a NULL ** destructor. +** +** ^If the third parameter (the pointer to the sqlite3_module object) is +** NULL then no new module is created and any existing modules with the +** same name are dropped. +** +** See also: [sqlite3_drop_modules()] */ SQLITE_API int sqlite3_create_module( sqlite3 *db, /* SQLite connection to register module with */ @@ -7391,6 +7777,23 @@ SQLITE_API int sqlite3_create_module_v2( void(*xDestroy)(void*) /* Module destructor function */ ); +/* +** CAPI3REF: Remove Unnecessary Virtual Table Implementations +** METHOD: sqlite3 +** +** ^The sqlite3_drop_modules(D,L) interface removes all virtual +** table modules from database connection D except those named on list L. +** The L parameter must be either NULL or a pointer to an array of pointers +** to strings where the array is terminated by a single NULL pointer. +** ^If the L parameter is NULL, then all virtual table modules are removed. +** +** See also: [sqlite3_create_module()] +*/ +SQLITE_API int sqlite3_drop_modules( + sqlite3 *db, /* Remove modules from this connection */ + const char **azKeep /* Except, do not remove the ones named here */ +); + /* ** CAPI3REF: Virtual Table Instance Object ** KEYWORDS: sqlite3_vtab @@ -7453,7 +7856,7 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL); ** METHOD: sqlite3 ** ** ^(Virtual tables can provide alternative implementations of functions -** using the [xFindFunction] method of the [virtual table module]. +** using the [xFindFunction] method of the [virtual table module]. ** But global versions of those functions ** must exist in order to be overloaded.)^ ** @@ -7467,16 +7870,6 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL); */ SQLITE_API int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg); -/* -** The interface to the virtual-table mechanism defined above (back up -** to a comment remarkably similar to this one) is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - /* ** CAPI3REF: A Handle To An Open BLOB ** KEYWORDS: {BLOB handle} {BLOB handles} @@ -7504,7 +7897,7 @@ typedef struct sqlite3_blob sqlite3_blob; ** SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow; ** )^ ** -** ^(Parameter zDb is not the filename that contains the database, but +** ^(Parameter zDb is not the filename that contains the database, but ** rather the symbolic name of the database. For attached databases, this is ** the name that appears after the AS keyword in the [ATTACH] statement. ** For the main database file, the database name is "main". For TEMP @@ -7517,28 +7910,28 @@ typedef struct sqlite3_blob sqlite3_blob; ** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored ** in *ppBlob. Otherwise an [error code] is returned and, unless the error ** code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided -** the API is not misused, it is always safe to call [sqlite3_blob_close()] +** the API is not misused, it is always safe to call [sqlite3_blob_close()] ** on *ppBlob after this function it returns. ** ** This function fails with SQLITE_ERROR if any of the following are true: ** ** -** ^Unless it returns SQLITE_MISUSE, this function sets the -** [database connection] error code and message accessible via -** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. +** ^Unless it returns SQLITE_MISUSE, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. ** ** A BLOB referenced by sqlite3_blob_open() may be read using the ** [sqlite3_blob_read()] interface and modified by using @@ -7564,7 +7957,7 @@ typedef struct sqlite3_blob sqlite3_blob; ** blob. ** ** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces -** and the built-in [zeroblob] SQL function may be used to create a +** and the built-in [zeroblob] SQL function may be used to create a ** zero-filled blob to read or write using the incremental-blob interface. ** ** To avoid a resource leak, every open [BLOB handle] should eventually @@ -7614,7 +8007,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); ** DESTRUCTOR: sqlite3_blob ** ** ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed -** unconditionally. Even if this routine returns an error code, the +** unconditionally. Even if this routine returns an error code, the ** handle is still closed.)^ ** ** ^If the blob handle being closed was opened for read-write access, and if @@ -7624,10 +8017,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); ** code is returned and the transaction rolled back. ** ** Calling this function with an argument that is not a NULL pointer or an -** open blob handle results in undefined behaviour. ^Calling this routine -** with a null pointer (such as would be returned by a failed call to +** open blob handle results in undefined behaviour. ^Calling this routine +** with a null pointer (such as would be returned by a failed call to ** [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function -** is passed a valid open blob handle, the values returned by the +** is passed a valid open blob handle, the values returned by the ** sqlite3_errcode() and sqlite3_errmsg() functions are set before returning. */ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); @@ -7636,7 +8029,7 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); ** CAPI3REF: Return The Size Of An Open BLOB ** METHOD: sqlite3_blob ** -** ^Returns the size in bytes of the BLOB accessible via the +** ^Returns the size in bytes of the BLOB accessible via the ** successfully opened [BLOB handle] in its only argument. ^The ** incremental blob I/O routines can only read or overwriting existing ** blob content; they cannot change the size of a blob. @@ -7687,9 +8080,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); ** ** ^(On success, sqlite3_blob_write() returns SQLITE_OK. ** Otherwise, an [error code] or an [extended error code] is returned.)^ -** ^Unless SQLITE_MISUSE is returned, this function sets the -** [database connection] error code and message accessible via -** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. +** ^Unless SQLITE_MISUSE is returned, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. ** ** ^If the [BLOB handle] passed as the first argument was not opened for ** writing (the flags parameter to [sqlite3_blob_open()] was zero), @@ -7698,9 +8091,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); ** This function may only modify the contents of the BLOB; it is ** not possible to increase the size of a BLOB using this API. ** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is written. The size of the -** BLOB (and hence the maximum value of N+iOffset) can be determined -** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less +** [SQLITE_ERROR] is returned and no data is written. The size of the +** BLOB (and hence the maximum value of N+iOffset) can be determined +** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less ** than zero [SQLITE_ERROR] is returned and no data is written. ** ** ^An attempt to write to an expired [BLOB handle] fails with an @@ -7794,7 +8187,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); **
    @@ -8414,12 +8828,12 @@ SQLITE_API int sqlite3_status64( ** CAPI3REF: Database Connection Status ** METHOD: sqlite3 ** -** ^This interface is used to retrieve runtime status information +** ^This interface is used to retrieve runtime status information ** about a single [database connection]. ^The first argument is the ** database connection object to be interrogated. ^The second argument ** is an integer constant, taken from the set of ** [SQLITE_DBSTATUS options], that -** determines the parameter to interrogate. The set of +** determines the parameter to interrogate. The set of ** [SQLITE_DBSTATUS options] is likely ** to grow in future releases of SQLite. ** @@ -8454,7 +8868,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** checked out.)^ ** ** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(
    SQLITE_DBSTATUS_LOOKASIDE_HIT
    -**
    This parameter returns the number malloc attempts that were +**
    This parameter returns the number of malloc attempts that were ** satisfied using lookaside memory. Only the high-water value is meaningful; ** the current value is always zero.)^ ** @@ -8479,7 +8893,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** memory used by all pager caches associated with the database connection.)^ ** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0. ** -** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]] +** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]] ** ^(
    SQLITE_DBSTATUS_CACHE_USED_SHARED
    **
    This parameter is similar to DBSTATUS_CACHE_USED, except that if a ** pager cache is shared between two or more connections the bytes of heap @@ -8494,7 +8908,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
    SQLITE_DBSTATUS_SCHEMA_USED
    **
    This parameter returns the approximate number of bytes of heap ** memory used to store the schema for all databases associated -** with the connection - main, temp, and any [ATTACH]-ed databases.)^ +** with the connection - main, temp, and any [ATTACH]-ed databases.)^ ** ^The full amount of memory used by the schemas is reported, even if the ** schema memory is shared with other database connections due to ** [shared cache mode] being enabled. @@ -8509,13 +8923,13 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** ** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(
    SQLITE_DBSTATUS_CACHE_HIT
    **
    This parameter returns the number of pager cache hits that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT +** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT ** is always 0. **
    ** ** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(
    SQLITE_DBSTATUS_CACHE_MISS
    **
    This parameter returns the number of pager cache misses that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS +** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS ** is always 0. **
    ** @@ -8536,7 +8950,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** cache overflowing. Transactions are more efficient if they are written ** to disk all at once. When pages spill mid-transaction, that introduces ** additional overhead. This parameter can be used help identify -** inefficiencies that can be resolve by increasing the cache size. +** inefficiencies that can be resolved by increasing the cache size. ** ** ** [[SQLITE_DBSTATUS_DEFERRED_FKS]] ^(
    SQLITE_DBSTATUS_DEFERRED_FKS
    @@ -8573,7 +8987,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** statements. For example, if the number of table steps greatly exceeds ** the number of table searches or result rows, that would tend to indicate ** that the prepared statement is using a full table scan rather than -** an index. +** an index. ** ** ^(This interface is used to retrieve and reset counter values from ** a [prepared statement]. The first argument is the prepared statement @@ -8600,7 +9014,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]]
    SQLITE_STMTSTATUS_FULLSCAN_STEP
    **
    ^This is the number of times that SQLite has stepped forward in ** a table as part of a full table scan. Large numbers for this counter -** may indicate opportunities for performance improvement through +** may indicate opportunities for performance improvement through ** careful use of indices.
    ** ** [[SQLITE_STMTSTATUS_SORT]]
    SQLITE_STMTSTATUS_SORT
    @@ -8618,14 +9032,14 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** [[SQLITE_STMTSTATUS_VM_STEP]]
    SQLITE_STMTSTATUS_VM_STEP
    **
    ^This is the number of virtual machine operations executed ** by the prepared statement if that number is less than or equal -** to 2147483647. The number of virtual machine operations can be +** to 2147483647. The number of virtual machine operations can be ** used as a proxy for the total work done by the prepared statement. ** If the number of virtual machine operations exceeds 2147483647 ** then the value returned by this statement status code is undefined. ** ** [[SQLITE_STMTSTATUS_REPREPARE]]
    SQLITE_STMTSTATUS_REPREPARE
    **
    ^This is the number of times that the prepare statement has been -** automatically regenerated due to schema changes or change to +** automatically regenerated due to schema changes or changes to ** [bound parameters] that might affect the query plan. ** ** [[SQLITE_STMTSTATUS_RUN]]
    SQLITE_STMTSTATUS_RUN
    @@ -8635,6 +9049,16 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); ** The counter is incremented on the first [sqlite3_step()] call of each ** cycle. ** +** [[SQLITE_STMTSTATUS_FILTER_MISS]] +** [[SQLITE_STMTSTATUS_FILTER HIT]] +**
    SQLITE_STMTSTATUS_FILTER_HIT
    +** SQLITE_STMTSTATUS_FILTER_MISS
    +**
    ^SQLITE_STMTSTATUS_FILTER_HIT is the number of times that a join +** step was bypassed because a Bloom filter returned not-found. The +** corresponding SQLITE_STMTSTATUS_FILTER_MISS value is the number of +** times that the Bloom filter returned a find, and thus the join step +** had to be processed as normal. +** ** [[SQLITE_STMTSTATUS_MEMUSED]]
    SQLITE_STMTSTATUS_MEMUSED
    **
    ^This is the approximate number of bytes of heap memory ** used to store the prepared statement. ^This value is not actually @@ -8649,6 +9073,8 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); #define SQLITE_STMTSTATUS_VM_STEP 4 #define SQLITE_STMTSTATUS_REPREPARE 5 #define SQLITE_STMTSTATUS_RUN 6 +#define SQLITE_STMTSTATUS_FILTER_MISS 7 +#define SQLITE_STMTSTATUS_FILTER_HIT 8 #define SQLITE_STMTSTATUS_MEMUSED 99 /* @@ -8685,15 +9111,15 @@ struct sqlite3_pcache_page { ** KEYWORDS: {page cache} ** ** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can -** register an alternative page cache implementation by passing in an +** register an alternative page cache implementation by passing in an ** instance of the sqlite3_pcache_methods2 structure.)^ -** In many applications, most of the heap memory allocated by +** In many applications, most of the heap memory allocated by ** SQLite is used for the page cache. -** By implementing a +** By implementing a ** custom page cache using this API, an application can better control -** the amount of memory consumed by SQLite, the way in which -** that memory is allocated and released, and the policies used to -** determine exactly which parts of a database file are cached and for +** the amount of memory consumed by SQLite, the way in which +** that memory is allocated and released, and the policies used to +** determine exactly which parts of a database file are cached and for ** how long. ** ** The alternative page cache mechanism is an @@ -8706,19 +9132,19 @@ struct sqlite3_pcache_page { ** [sqlite3_config()] returns.)^ ** ** [[the xInit() page cache method]] -** ^(The xInit() method is called once for each effective +** ^(The xInit() method is called once for each effective ** call to [sqlite3_initialize()])^ ** (usually only once during the lifetime of the process). ^(The xInit() ** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^ -** The intent of the xInit() method is to set up global data structures -** required by the custom page cache implementation. -** ^(If the xInit() method is NULL, then the +** The intent of the xInit() method is to set up global data structures +** required by the custom page cache implementation. +** ^(If the xInit() method is NULL, then the ** built-in default page cache is used instead of the application defined ** page cache.)^ ** ** [[the xShutdown() page cache method]] ** ^The xShutdown() method is called by [sqlite3_shutdown()]. -** It can be used to clean up +** It can be used to clean up ** any outstanding resources before process shutdown, if required. ** ^The xShutdown() method may be NULL. ** @@ -8737,7 +9163,7 @@ struct sqlite3_pcache_page { ** though this is not guaranteed. ^The ** first parameter, szPage, is the size in bytes of the pages that must ** be allocated by the cache. ^szPage will always a power of two. ^The -** second parameter szExtra is a number of bytes of extra storage +** second parameter szExtra is a number of bytes of extra storage ** associated with each page cache entry. ^The szExtra parameter will ** a number less than 250. SQLite will use the ** extra szExtra bytes on each page to store metadata about the underlying @@ -8750,7 +9176,7 @@ struct sqlite3_pcache_page { ** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will ** never invoke xUnpin() except to deliberately delete a page. ** ^In other words, calls to xUnpin() on a cache with bPurgeable set to -** false will always have the "discard" flag set to true. +** false will always have the "discard" flag set to true. ** ^Hence, a cache created with bPurgeable false will ** never contain any unpinned pages. ** @@ -8765,12 +9191,12 @@ struct sqlite3_pcache_page { ** [[the xPagecount() page cache methods]] ** The xPagecount() method must return the number of pages currently ** stored in the cache, both pinned and unpinned. -** +** ** [[the xFetch() page cache methods]] -** The xFetch() method locates a page in the cache and returns a pointer to +** The xFetch() method locates a page in the cache and returns a pointer to ** an sqlite3_pcache_page object associated with that page, or a NULL pointer. ** The pBuf element of the returned sqlite3_pcache_page object will be a -** pointer to a buffer of szPage bytes used to store the content of a +** pointer to a buffer of szPage bytes used to store the content of a ** single database page. The pExtra element of sqlite3_pcache_page will be ** a pointer to the szExtra bytes of extra storage that SQLite has requested ** for each entry in the page cache. @@ -8796,7 +9222,7 @@ struct sqlite3_pcache_page { ** ** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1. SQLite ** will only use a createFlag of 2 after a prior call with a createFlag of 1 -** failed.)^ In between the to xFetch() calls, SQLite may +** failed.)^ In between the xFetch() calls, SQLite may ** attempt to unpin one or more cache pages by spilling the content of ** pinned pages to disk and synching the operating system disk cache. ** @@ -8809,8 +9235,8 @@ struct sqlite3_pcache_page { ** page cache implementation. ^The page cache implementation ** may choose to evict unpinned pages at any time. ** -** The cache must not perform any reference counting. A single -** call to xUnpin() unpins the page regardless of the number of prior calls +** The cache must not perform any reference counting. A single +** call to xUnpin() unpins the page regardless of the number of prior calls ** to xFetch(). ** ** [[the xRekey() page cache methods]] @@ -8850,7 +9276,7 @@ struct sqlite3_pcache_methods2 { int (*xPagecount)(sqlite3_pcache*); sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag); void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard); - void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*, + void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*, unsigned oldKey, unsigned newKey); void (*xTruncate)(sqlite3_pcache*, unsigned iLimit); void (*xDestroy)(sqlite3_pcache*); @@ -8895,7 +9321,7 @@ typedef struct sqlite3_backup sqlite3_backup; ** ** The backup API copies the content of one database into another. ** It is useful either for creating backups of databases or -** for copying in-memory databases to or from persistent files. +** for copying in-memory databases to or from persistent files. ** ** See Also: [Using the SQLite Online Backup API] ** @@ -8906,36 +9332,36 @@ typedef struct sqlite3_backup sqlite3_backup; ** ^Thus, the backup may be performed on a live source database without ** preventing other database connections from ** reading or writing to the source database while the backup is underway. -** -** ^(To perform a backup operation: +** +** ^(To perform a backup operation: **
      **
    1. sqlite3_backup_init() is called once to initialize the -** backup, -**
    2. sqlite3_backup_step() is called one or more times to transfer +** backup, +**
    3. sqlite3_backup_step() is called one or more times to transfer ** the data between the two databases, and finally -**
    4. sqlite3_backup_finish() is called to release all resources -** associated with the backup operation. +**
    5. sqlite3_backup_finish() is called to release all resources +** associated with the backup operation. **
    )^ ** There should be exactly one call to sqlite3_backup_finish() for each ** successful call to sqlite3_backup_init(). ** ** [[sqlite3_backup_init()]] sqlite3_backup_init() ** -** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the -** [database connection] associated with the destination database +** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the +** [database connection] associated with the destination database ** and the database name, respectively. ** ^The database name is "main" for the main database, "temp" for the ** temporary database, or the name specified after the AS keyword in ** an [ATTACH] statement for an attached database. -** ^The S and M arguments passed to +** ^The S and M arguments passed to ** sqlite3_backup_init(D,N,S,M) identify the [database connection] ** and database name of the source database, respectively. ** ^The source and destination [database connections] (parameters S and D) ** must be different or else sqlite3_backup_init(D,N,S,M) will fail with ** an error. ** -** ^A call to sqlite3_backup_init() will fail, returning NULL, if -** there is already a read or read-write transaction open on the +** ^A call to sqlite3_backup_init() will fail, returning NULL, if +** there is already a read or read-write transaction open on the ** destination database. ** ** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is @@ -8947,14 +9373,14 @@ typedef struct sqlite3_backup sqlite3_backup; ** ^A successful call to sqlite3_backup_init() returns a pointer to an ** [sqlite3_backup] object. ** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and -** sqlite3_backup_finish() functions to perform the specified backup +** sqlite3_backup_finish() functions to perform the specified backup ** operation. ** ** [[sqlite3_backup_step()]] sqlite3_backup_step() ** -** ^Function sqlite3_backup_step(B,N) will copy up to N pages between +** ^Function sqlite3_backup_step(B,N) will copy up to N pages between ** the source and destination databases specified by [sqlite3_backup] object B. -** ^If N is negative, all remaining source pages are copied. +** ^If N is negative, all remaining source pages are copied. ** ^If sqlite3_backup_step(B,N) successfully copies N pages and there ** are still more pages to be copied, then the function returns [SQLITE_OK]. ** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages @@ -8976,8 +9402,8 @@ typedef struct sqlite3_backup sqlite3_backup; ** ** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then ** the [sqlite3_busy_handler | busy-handler function] -** is invoked (if one is specified). ^If the -** busy-handler returns non-zero before the lock is available, then +** is invoked (if one is specified). ^If the +** busy-handler returns non-zero before the lock is available, then ** [SQLITE_BUSY] is returned to the caller. ^In this case the call to ** sqlite3_backup_step() can be retried later. ^If the source ** [database connection] @@ -8985,15 +9411,15 @@ typedef struct sqlite3_backup sqlite3_backup; ** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this ** case the call to sqlite3_backup_step() can be retried later on. ^(If ** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or -** [SQLITE_READONLY] is returned, then -** there is no point in retrying the call to sqlite3_backup_step(). These -** errors are considered fatal.)^ The application must accept -** that the backup operation has failed and pass the backup operation handle +** [SQLITE_READONLY] is returned, then +** there is no point in retrying the call to sqlite3_backup_step(). These +** errors are considered fatal.)^ The application must accept +** that the backup operation has failed and pass the backup operation handle ** to the sqlite3_backup_finish() to release associated resources. ** ** ^The first call to sqlite3_backup_step() obtains an exclusive lock -** on the destination file. ^The exclusive lock is not released until either -** sqlite3_backup_finish() is called or the backup operation is complete +** on the destination file. ^The exclusive lock is not released until either +** sqlite3_backup_finish() is called or the backup operation is complete ** and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to ** sqlite3_backup_step() obtains a [shared lock] on the source database that ** lasts for the duration of the sqlite3_backup_step() call. @@ -9002,18 +9428,18 @@ typedef struct sqlite3_backup sqlite3_backup; ** through the backup process. ^If the source database is modified by an ** external process or via a database connection other than the one being ** used by the backup operation, then the backup will be automatically -** restarted by the next call to sqlite3_backup_step(). ^If the source +** restarted by the next call to sqlite3_backup_step(). ^If the source ** database is modified by the using the same database connection as is used ** by the backup operation, then the backup database is automatically ** updated at the same time. ** ** [[sqlite3_backup_finish()]] sqlite3_backup_finish() ** -** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the +** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the ** application wishes to abandon the backup operation, the application ** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish(). ** ^The sqlite3_backup_finish() interfaces releases all -** resources associated with the [sqlite3_backup] object. +** resources associated with the [sqlite3_backup] object. ** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any ** active write-transaction on the destination database is rolled back. ** The [sqlite3_backup] object is invalid @@ -9053,23 +9479,23 @@ typedef struct sqlite3_backup sqlite3_backup; ** connections, then the source database connection may be used concurrently ** from within other threads. ** -** However, the application must guarantee that the destination -** [database connection] is not passed to any other API (by any thread) after +** However, the application must guarantee that the destination +** [database connection] is not passed to any other API (by any thread) after ** sqlite3_backup_init() is called and before the corresponding call to ** sqlite3_backup_finish(). SQLite does not currently check to see ** if the application incorrectly accesses the destination [database connection] ** and so no error code is reported, but the operations may malfunction ** nevertheless. Use of the destination database connection while a -** backup is in progress might also also cause a mutex deadlock. +** backup is in progress might also cause a mutex deadlock. ** ** If running in [shared cache mode], the application must ** guarantee that the shared cache used by the destination database ** is not accessed while the backup is running. In practice this means -** that the application must guarantee that the disk file being +** that the application must guarantee that the disk file being ** backed up to is not accessed by any connection within the process, ** not just the specific connection that was passed to sqlite3_backup_init(). ** -** The [sqlite3_backup] object itself is partially threadsafe. Multiple +** The [sqlite3_backup] object itself is partially threadsafe. Multiple ** threads may safely make multiple concurrent calls to sqlite3_backup_step(). ** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount() ** APIs are not strictly speaking threadsafe. If they are invoked at the @@ -9094,8 +9520,8 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ^When running in shared-cache mode, a database operation may fail with ** an [SQLITE_LOCKED] error if the required locks on the shared-cache or ** individual tables within the shared-cache cannot be obtained. See -** [SQLite Shared-Cache Mode] for a description of shared-cache locking. -** ^This API may be used to register a callback that SQLite will invoke +** [SQLite Shared-Cache Mode] for a description of shared-cache locking. +** ^This API may be used to register a callback that SQLite will invoke ** when the connection currently holding the required lock relinquishes it. ** ^This API is only available if the library was compiled with the ** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined. @@ -9103,18 +9529,18 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** See Also: [Using the SQLite Unlock Notification Feature]. ** ** ^Shared-cache locks are released when a database connection concludes -** its current transaction, either by committing it or rolling it back. +** its current transaction, either by committing it or rolling it back. ** ** ^When a connection (known as the blocked connection) fails to obtain a ** shared-cache lock and SQLITE_LOCKED is returned to the caller, the ** identity of the database connection (the blocking connection) that -** has locked the required resource is stored internally. ^After an +** has locked the required resource is stored internally. ^After an ** application receives an SQLITE_LOCKED error, it may call the -** sqlite3_unlock_notify() method with the blocked connection handle as +** sqlite3_unlock_notify() method with the blocked connection handle as ** the first argument to register for a callback that will be invoked ** when the blocking connections current transaction is concluded. ^The ** callback is invoked from within the [sqlite3_step] or [sqlite3_close] -** call that concludes the blocking connections transaction. +** call that concludes the blocking connection's transaction. ** ** ^(If sqlite3_unlock_notify() is called in a multi-threaded application, ** there is a chance that the blocking connection will have already @@ -9124,16 +9550,16 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** ^If the blocked connection is attempting to obtain a write-lock on a ** shared-cache table, and more than one other connection currently holds -** a read-lock on the same table, then SQLite arbitrarily selects one of +** a read-lock on the same table, then SQLite arbitrarily selects one of ** the other connections to use as the blocking connection. ** -** ^(There may be at most one unlock-notify callback registered by a +** ^(There may be at most one unlock-notify callback registered by a ** blocked connection. If sqlite3_unlock_notify() is called when the ** blocked connection already has a registered unlock-notify callback, ** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is ** called with a NULL pointer as its second argument, then any existing -** unlock-notify callback is canceled. ^The blocked connections -** unlock-notify callback may also be canceled by closing the blocked +** unlock-notify callback is cancelled. ^The blocked connections +** unlock-notify callback may also be cancelled by closing the blocked ** connection using [sqlite3_close()]. ** ** The unlock-notify callback is not reentrant. If an application invokes @@ -9145,25 +9571,25 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** Callback Invocation Details ** -** When an unlock-notify callback is registered, the application provides a +** When an unlock-notify callback is registered, the application provides a ** single void* pointer that is passed to the callback when it is invoked. ** However, the signature of the callback function allows SQLite to pass ** it an array of void* context pointers. The first argument passed to ** an unlock-notify callback is a pointer to an array of void* pointers, ** and the second is the number of entries in the array. ** -** When a blocking connections transaction is concluded, there may be +** When a blocking connection's transaction is concluded, there may be ** more than one blocked connection that has registered for an unlock-notify ** callback. ^If two or more such blocked connections have specified the ** same callback function, then instead of invoking the callback function ** multiple times, it is invoked once with the set of void* context pointers ** specified by the blocked connections bundled together into an array. -** This gives the application an opportunity to prioritize any actions +** This gives the application an opportunity to prioritize any actions ** related to the set of unblocked database connections. ** ** Deadlock Detection ** -** Assuming that after registering for an unlock-notify callback a +** Assuming that after registering for an unlock-notify callback a ** database waits for the callback to be issued before taking any further ** action (a reasonable assumption), then using this API may cause the ** application to deadlock. For example, if connection X is waiting for @@ -9186,7 +9612,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** ** The "DROP TABLE" Exception ** -** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost +** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost ** always appropriate to call sqlite3_unlock_notify(). There is however, ** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement, ** SQLite checks if there are any currently executing SELECT statements @@ -9199,7 +9625,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); ** One way around this problem is to check the extended error code returned ** by an sqlite3_step() call. ^(If there is a blocking connection, then the ** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in -** the special "DROP TABLE/INDEX" case, the extended error code is just +** the special "DROP TABLE/INDEX" case, the extended error code is just ** SQLITE_LOCKED.)^ */ SQLITE_API int sqlite3_unlock_notify( @@ -9290,8 +9716,8 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); ** ^The [sqlite3_wal_hook()] function is used to register a callback that ** is invoked each time data is committed to a database in wal mode. ** -** ^(The callback is invoked by SQLite after the commit has taken place and -** the associated write-lock on the database released)^, so the implementation +** ^(The callback is invoked by SQLite after the commit has taken place and +** the associated write-lock on the database released)^, so the implementation ** may read, write or [checkpoint] the database as required. ** ** ^The first parameter passed to the callback function when it is invoked @@ -9310,15 +9736,16 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); ** that does not correspond to any valid SQLite error code, the results ** are undefined. ** -** A single database handle may have at most a single write-ahead log callback +** A single database handle may have at most a single write-ahead log callback ** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any -** previously registered write-ahead log callback. ^Note that the -** [sqlite3_wal_autocheckpoint()] interface and the +** previously registered write-ahead log callback. ^The return value is +** a copy of the third parameter from the previous call, if any, or 0. +** ^Note that the [sqlite3_wal_autocheckpoint()] interface and the ** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will ** overwrite any prior [sqlite3_wal_hook()] settings. */ SQLITE_API void *sqlite3_wal_hook( - sqlite3*, + sqlite3*, int(*)(void *,sqlite3*,const char*,int), void* ); @@ -9331,7 +9758,7 @@ SQLITE_API void *sqlite3_wal_hook( ** [sqlite3_wal_hook()] that causes any database on [database connection] D ** to automatically [checkpoint] ** after committing a transaction if there are N or -** more frames in the [write-ahead log] file. ^Passing zero or +** more frames in the [write-ahead log] file. ^Passing zero or ** a negative value as the nFrame parameter disables automatic ** checkpoints entirely. ** @@ -9361,7 +9788,7 @@ SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N); ** ^(The sqlite3_wal_checkpoint(D,X) is equivalent to ** [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^ ** -** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the +** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the ** [write-ahead log] for database X on [database connection] D to be ** transferred into the database file and for the write-ahead log to ** be reset. See the [checkpointing] documentation for addition @@ -9387,10 +9814,10 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** **
    **
    SQLITE_CHECKPOINT_PASSIVE
    -** ^Checkpoint as many frames as possible without waiting for any database -** readers or writers to finish, then sync the database file if all frames +** ^Checkpoint as many frames as possible without waiting for any database +** readers or writers to finish, then sync the database file if all frames ** in the log were checkpointed. ^The [busy-handler callback] -** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode. +** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode. ** ^On the other hand, passive mode might leave the checkpoint unfinished ** if there are concurrent readers or writers. ** @@ -9404,9 +9831,9 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** **
    SQLITE_CHECKPOINT_RESTART
    ** ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition -** that after checkpointing the log file it blocks (calls the +** that after checkpointing the log file it blocks (calls the ** [busy-handler callback]) -** until all readers are reading from the database file only. ^This ensures +** until all readers are reading from the database file only. ^This ensures ** that the next writer will restart the log file from the beginning. ** ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new ** database writer attempts while it is pending, but does not impede readers. @@ -9428,31 +9855,31 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); ** truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero. ** ** ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If -** any other process is running a checkpoint operation at the same time, the -** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a +** any other process is running a checkpoint operation at the same time, the +** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a ** busy-handler configured, it will not be invoked in this case. ** -** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the +** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the ** exclusive "writer" lock on the database file. ^If the writer lock cannot be ** obtained immediately, and a busy-handler is configured, it is invoked and ** the writer lock retried until either the busy-handler returns 0 or the lock ** is successfully obtained. ^The busy-handler is also invoked while waiting for ** database readers as described above. ^If the busy-handler returns 0 before ** the writer lock is obtained or while waiting for database readers, the -** checkpoint operation proceeds from that point in the same way as -** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible +** checkpoint operation proceeds from that point in the same way as +** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible ** without blocking any further. ^SQLITE_BUSY is returned in this case. ** ** ^If parameter zDb is NULL or points to a zero length string, then the -** specified operation is attempted on all WAL databases [attached] to +** specified operation is attempted on all WAL databases [attached] to ** [database connection] db. In this case the -** values written to output parameters *pnLog and *pnCkpt are undefined. ^If -** an SQLITE_BUSY error is encountered when processing one or more of the -** attached WAL databases, the operation is still attempted on any remaining -** attached databases and SQLITE_BUSY is returned at the end. ^If any other -** error occurs while processing an attached database, processing is abandoned -** and the error code is returned to the caller immediately. ^If no error -** (SQLITE_BUSY or otherwise) is encountered while processing the attached +** values written to output parameters *pnLog and *pnCkpt are undefined. ^If +** an SQLITE_BUSY error is encountered when processing one or more of the +** attached WAL databases, the operation is still attempted on any remaining +** attached databases and SQLITE_BUSY is returned at the end. ^If any other +** error occurs while processing an attached database, processing is abandoned +** and the error code is returned to the caller immediately. ^If no error +** (SQLITE_BUSY or otherwise) is encountered while processing the attached ** databases, SQLITE_OK is returned. ** ** ^If database zDb is the name of an attached database that is not in WAL @@ -9487,7 +9914,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( */ #define SQLITE_CHECKPOINT_PASSIVE 0 /* Do as much as possible w/o blocking */ #define SQLITE_CHECKPOINT_FULL 1 /* Wait for writers, then checkpoint */ -#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for for readers */ +#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for readers */ #define SQLITE_CHECKPOINT_TRUNCATE 3 /* Like RESTART but also truncate WAL */ /* @@ -9500,21 +9927,28 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( ** If this interface is invoked outside the context of an xConnect or ** xCreate virtual table method then the behavior is undefined. ** -** At present, there is only one option that may be configured using -** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options -** may be added in the future. +** In the call sqlite3_vtab_config(D,C,...) the D parameter is the +** [database connection] in which the virtual table is being created and +** which is passed in as the first argument to the [xConnect] or [xCreate] +** method that is invoking sqlite3_vtab_config(). The C parameter is one +** of the [virtual table configuration options]. The presence and meaning +** of parameters after C depend on which [virtual table configuration option] +** is used. */ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...); /* ** CAPI3REF: Virtual Table Configuration Options +** KEYWORDS: {virtual table configuration options} +** KEYWORDS: {virtual table configuration option} ** ** These macros define the various options to the ** [sqlite3_vtab_config()] interface that [virtual table] implementations ** can use to customize and optimize their behavior. ** **
    -**
    SQLITE_VTAB_CONSTRAINT_SUPPORT +** [[SQLITE_VTAB_CONSTRAINT_SUPPORT]] +**
    SQLITE_VTAB_CONSTRAINT_SUPPORT
    **
    Calls of the form ** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported, ** where X is an integer. If X is zero, then the [virtual table] whose @@ -9528,24 +9962,56 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...); ** If X is non-zero, then the virtual table implementation guarantees ** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before ** any modifications to internal or persistent data structures have been made. -** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite +** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite ** is able to roll back a statement or database transaction, and abandon -** or continue processing the current SQL statement as appropriate. +** or continue processing the current SQL statement as appropriate. ** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns ** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode ** had been ABORT. ** ** Virtual table implementations that are required to handle OR REPLACE -** must do so within the [xUpdate] method. If a call to the -** [sqlite3_vtab_on_conflict()] function indicates that the current ON -** CONFLICT policy is REPLACE, the virtual table implementation should +** must do so within the [xUpdate] method. If a call to the +** [sqlite3_vtab_on_conflict()] function indicates that the current ON +** CONFLICT policy is REPLACE, the virtual table implementation should ** silently replace the appropriate rows within the xUpdate callback and ** return SQLITE_OK. Or, if this is not possible, it may return -** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT +** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT ** constraint handling. +**
    +** +** [[SQLITE_VTAB_DIRECTONLY]]
    SQLITE_VTAB_DIRECTONLY
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_DIRECTONLY) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** prohibits that virtual table from being used from within triggers and +** views. +**
    +** +** [[SQLITE_VTAB_INNOCUOUS]]
    SQLITE_VTAB_INNOCUOUS
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_INNOCUOUS) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** identify that virtual table as being safe to use from within triggers +** and views. Conceptually, the SQLITE_VTAB_INNOCUOUS tag means that the +** virtual table can do no serious harm even if it is controlled by a +** malicious hacker. Developers should avoid setting the SQLITE_VTAB_INNOCUOUS +** flag unless absolutely necessary. +**
    +** +** [[SQLITE_VTAB_USES_ALL_SCHEMAS]]
    SQLITE_VTAB_USES_ALL_SCHEMAS
    +**
    Calls of the form +** [sqlite3_vtab_config](db,SQLITE_VTAB_USES_ALL_SCHEMA) from within the +** the [xConnect] or [xCreate] methods of a [virtual table] implementation +** instruct the query planner to begin at least a read transaction on +** all schemas ("main", "temp", and any ATTACH-ed databases) whenever the +** virtual table is used. +**
    **
    */ #define SQLITE_VTAB_CONSTRAINT_SUPPORT 1 +#define SQLITE_VTAB_INNOCUOUS 2 +#define SQLITE_VTAB_DIRECTONLY 3 +#define SQLITE_VTAB_USES_ALL_SCHEMAS 4 /* ** CAPI3REF: Determine The Virtual Table Conflict Policy @@ -9563,10 +10029,11 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); ** CAPI3REF: Determine If Virtual Table Column Access Is For UPDATE ** ** If the sqlite3_vtab_nochange(X) routine is called within the [xColumn] -** method of a [virtual table], then it returns true if and only if the +** method of a [virtual table], then it might return true if the ** column is being fetched as part of an UPDATE operation during which the -** column value will not change. Applications might use this to substitute -** a return value that is less expensive to compute and that the corresponding +** column value will not change. The virtual table implementation can use +** this hint as permission to substitute a return value that is less +** expensive to compute and that the corresponding ** [xUpdate] method understands as a "no-change" value. ** ** If the [xColumn] method calls sqlite3_vtab_nochange() and finds that @@ -9575,23 +10042,285 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); ** any of the [sqlite3_result_int|sqlite3_result_xxxxx() interfaces]. ** In that case, [sqlite3_value_nochange(X)] will return true for the ** same column in the [xUpdate] method. +** +** The sqlite3_vtab_nochange() routine is an optimization. Virtual table +** implementations should continue to give a correct answer even if the +** sqlite3_vtab_nochange() interface were to always return false. In the +** current implementation, the sqlite3_vtab_nochange() interface does always +** returns false for the enhanced [UPDATE FROM] statement. */ SQLITE_API int sqlite3_vtab_nochange(sqlite3_context*); /* ** CAPI3REF: Determine The Collation For a Virtual Table Constraint +** METHOD: sqlite3_index_info ** ** This function may only be called from within a call to the [xBestIndex] -** method of a [virtual table]. +** method of a [virtual table]. This function returns a pointer to a string +** that is the name of the appropriate collation sequence to use for text +** comparisons on the constraint identified by its arguments. ** -** The first argument must be the sqlite3_index_info object that is the -** first parameter to the xBestIndex() method. The second argument must be -** an index into the aConstraint[] array belonging to the sqlite3_index_info -** structure passed to xBestIndex. This function returns a pointer to a buffer -** containing the name of the collation sequence for the corresponding -** constraint. +** The first argument must be the pointer to the [sqlite3_index_info] object +** that is the first parameter to the xBestIndex() method. The second argument +** must be an index into the aConstraint[] array belonging to the +** sqlite3_index_info structure passed to xBestIndex. +** +** Important: +** The first parameter must be the same pointer that is passed into the +** xBestMethod() method. The first parameter may not be a pointer to a +** different [sqlite3_index_info] object, even an exact copy. +** +** The return value is computed as follows: +** +**
      +**

    1. If the constraint comes from a WHERE clause expression that contains +** a [COLLATE operator], then the name of the collation specified by +** that COLLATE operator is returned. +**

    2. If there is no COLLATE operator, but the column that is the subject +** of the constraint specifies an alternative collating sequence via +** a [COLLATE clause] on the column definition within the CREATE TABLE +** statement that was passed into [sqlite3_declare_vtab()], then the +** name of that alternative collating sequence is returned. +**

    3. Otherwise, "BINARY" is returned. +**

    */ -SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_info*,int); +SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info*,int); + +/* +** CAPI3REF: Determine if a virtual table query is DISTINCT +** METHOD: sqlite3_index_info +** +** This API may only be used from within an [xBestIndex|xBestIndex method] +** of a [virtual table] implementation. The result of calling this +** interface from outside of xBestIndex() is undefined and probably harmful. +** +** ^The sqlite3_vtab_distinct() interface returns an integer between 0 and +** 3. The integer returned by sqlite3_vtab_distinct() +** gives the virtual table additional information about how the query +** planner wants the output to be ordered. As long as the virtual table +** can meet the ordering requirements of the query planner, it may set +** the "orderByConsumed" flag. +** +**

    1. +** ^If the sqlite3_vtab_distinct() interface returns 0, that means +** that the query planner needs the virtual table to return all rows in the +** sort order defined by the "nOrderBy" and "aOrderBy" fields of the +** [sqlite3_index_info] object. This is the default expectation. If the +** virtual table outputs all rows in sorted order, then it is always safe for +** the xBestIndex method to set the "orderByConsumed" flag, regardless of +** the return value from sqlite3_vtab_distinct(). +**

    2. +** ^(If the sqlite3_vtab_distinct() interface returns 1, that means +** that the query planner does not need the rows to be returned in sorted order +** as long as all rows with the same values in all columns identified by the +** "aOrderBy" field are adjacent.)^ This mode is used when the query planner +** is doing a GROUP BY. +**

    3. +** ^(If the sqlite3_vtab_distinct() interface returns 2, that means +** that the query planner does not need the rows returned in any particular +** order, as long as rows with the same values in all "aOrderBy" columns +** are adjacent.)^ ^(Furthermore, only a single row for each particular +** combination of values in the columns identified by the "aOrderBy" field +** needs to be returned.)^ ^It is always ok for two or more rows with the same +** values in all "aOrderBy" columns to be returned, as long as all such rows +** are adjacent. ^The virtual table may, if it chooses, omit extra rows +** that have the same value for all columns identified by "aOrderBy". +** ^However omitting the extra rows is optional. +** This mode is used for a DISTINCT query. +**

    4. +** ^(If the sqlite3_vtab_distinct() interface returns 3, that means +** that the query planner needs only distinct rows but it does need the +** rows to be sorted.)^ ^The virtual table implementation is free to omit +** rows that are identical in all aOrderBy columns, if it wants to, but +** it is not required to omit any rows. This mode is used for queries +** that have both DISTINCT and ORDER BY clauses. +**

    +** +** ^For the purposes of comparing virtual table output values to see if the +** values are same value for sorting purposes, two NULL values are considered +** to be the same. In other words, the comparison operator is "IS" +** (or "IS NOT DISTINCT FROM") and not "==". +** +** If a virtual table implementation is unable to meet the requirements +** specified above, then it must not set the "orderByConsumed" flag in the +** [sqlite3_index_info] object or an incorrect answer may result. +** +** ^A virtual table implementation is always free to return rows in any order +** it wants, as long as the "orderByConsumed" flag is not set. ^When the +** the "orderByConsumed" flag is unset, the query planner will add extra +** [bytecode] to ensure that the final results returned by the SQL query are +** ordered correctly. The use of the "orderByConsumed" flag and the +** sqlite3_vtab_distinct() interface is merely an optimization. ^Careful +** use of the sqlite3_vtab_distinct() interface and the "orderByConsumed" +** flag might help queries against a virtual table to run faster. Being +** overly aggressive and setting the "orderByConsumed" flag when it is not +** valid to do so, on the other hand, might cause SQLite to return incorrect +** results. +*/ +SQLITE_API int sqlite3_vtab_distinct(sqlite3_index_info*); + +/* +** CAPI3REF: Identify and handle IN constraints in xBestIndex +** +** This interface may only be used from within an +** [xBestIndex|xBestIndex() method] of a [virtual table] implementation. +** The result of invoking this interface from any other context is +** undefined and probably harmful. +** +** ^(A constraint on a virtual table of the form +** "[IN operator|column IN (...)]" is +** communicated to the xBestIndex method as a +** [SQLITE_INDEX_CONSTRAINT_EQ] constraint.)^ If xBestIndex wants to use +** this constraint, it must set the corresponding +** aConstraintUsage[].argvIndex to a positive integer. ^(Then, under +** the usual mode of handling IN operators, SQLite generates [bytecode] +** that invokes the [xFilter|xFilter() method] once for each value +** on the right-hand side of the IN operator.)^ Thus the virtual table +** only sees a single value from the right-hand side of the IN operator +** at a time. +** +** In some cases, however, it would be advantageous for the virtual +** table to see all values on the right-hand of the IN operator all at +** once. The sqlite3_vtab_in() interfaces facilitates this in two ways: +** +**
      +**

    1. +** ^A call to sqlite3_vtab_in(P,N,-1) will return true (non-zero) +** if and only if the [sqlite3_index_info|P->aConstraint][N] constraint +** is an [IN operator] that can be processed all at once. ^In other words, +** sqlite3_vtab_in() with -1 in the third argument is a mechanism +** by which the virtual table can ask SQLite if all-at-once processing +** of the IN operator is even possible. +** +**

    2. +** ^A call to sqlite3_vtab_in(P,N,F) with F==1 or F==0 indicates +** to SQLite that the virtual table does or does not want to process +** the IN operator all-at-once, respectively. ^Thus when the third +** parameter (F) is non-negative, this interface is the mechanism by +** which the virtual table tells SQLite how it wants to process the +** IN operator. +**

    +** +** ^The sqlite3_vtab_in(P,N,F) interface can be invoked multiple times +** within the same xBestIndex method call. ^For any given P,N pair, +** the return value from sqlite3_vtab_in(P,N,F) will always be the same +** within the same xBestIndex call. ^If the interface returns true +** (non-zero), that means that the constraint is an IN operator +** that can be processed all-at-once. ^If the constraint is not an IN +** operator or cannot be processed all-at-once, then the interface returns +** false. +** +** ^(All-at-once processing of the IN operator is selected if both of the +** following conditions are met: +** +**
      +**

    1. The P->aConstraintUsage[N].argvIndex value is set to a positive +** integer. This is how the virtual table tells SQLite that it wants to +** use the N-th constraint. +** +**

    2. The last call to sqlite3_vtab_in(P,N,F) for which F was +** non-negative had F>=1. +**

    )^ +** +** ^If either or both of the conditions above are false, then SQLite uses +** the traditional one-at-a-time processing strategy for the IN constraint. +** ^If both conditions are true, then the argvIndex-th parameter to the +** xFilter method will be an [sqlite3_value] that appears to be NULL, +** but which can be passed to [sqlite3_vtab_in_first()] and +** [sqlite3_vtab_in_next()] to find all values on the right-hand side +** of the IN constraint. +*/ +SQLITE_API int sqlite3_vtab_in(sqlite3_index_info*, int iCons, int bHandle); + +/* +** CAPI3REF: Find all elements on the right-hand side of an IN constraint. +** +** These interfaces are only useful from within the +** [xFilter|xFilter() method] of a [virtual table] implementation. +** The result of invoking these interfaces from any other context +** is undefined and probably harmful. +** +** The X parameter in a call to sqlite3_vtab_in_first(X,P) or +** sqlite3_vtab_in_next(X,P) should be one of the parameters to the +** xFilter method which invokes these routines, and specifically +** a parameter that was previously selected for all-at-once IN constraint +** processing use the [sqlite3_vtab_in()] interface in the +** [xBestIndex|xBestIndex method]. ^(If the X parameter is not +** an xFilter argument that was selected for all-at-once IN constraint +** processing, then these routines return [SQLITE_ERROR].)^ +** +** ^(Use these routines to access all values on the right-hand side +** of the IN constraint using code like the following: +** +** 
    +**    for(rc=sqlite3_vtab_in_first(pList, &pVal);
+**        rc==SQLITE_OK && pVal;
+**        rc=sqlite3_vtab_in_next(pList, &pVal)
+**    ){
+**      // do something with pVal
+**    }
+**    if( rc!=SQLITE_OK ){
+**      // an error has occurred
+**    }
+**
    )^ +** +** ^On success, the sqlite3_vtab_in_first(X,P) and sqlite3_vtab_in_next(X,P) +** routines return SQLITE_OK and set *P to point to the first or next value +** on the RHS of the IN constraint. ^If there are no more values on the +** right hand side of the IN constraint, then *P is set to NULL and these +** routines return [SQLITE_DONE]. ^The return value might be +** some other value, such as SQLITE_NOMEM, in the event of a malfunction. +** +** The *ppOut values returned by these routines are only valid until the +** next call to either of these routines or until the end of the xFilter +** method from which these routines were called. If the virtual table +** implementation needs to retain the *ppOut values for longer, it must make +** copies. The *ppOut values are [protected sqlite3_value|protected]. +*/ +SQLITE_API int sqlite3_vtab_in_first(sqlite3_value *pVal, sqlite3_value **ppOut); +SQLITE_API int sqlite3_vtab_in_next(sqlite3_value *pVal, sqlite3_value **ppOut); + +/* +** CAPI3REF: Constraint values in xBestIndex() +** METHOD: sqlite3_index_info +** +** This API may only be used from within the [xBestIndex|xBestIndex method] +** of a [virtual table] implementation. The result of calling this interface +** from outside of an xBestIndex method are undefined and probably harmful. +** +** ^When the sqlite3_vtab_rhs_value(P,J,V) interface is invoked from within +** the [xBestIndex] method of a [virtual table] implementation, with P being +** a copy of the [sqlite3_index_info] object pointer passed into xBestIndex and +** J being a 0-based index into P->aConstraint[], then this routine +** attempts to set *V to the value of the right-hand operand of +** that constraint if the right-hand operand is known. ^If the +** right-hand operand is not known, then *V is set to a NULL pointer. +** ^The sqlite3_vtab_rhs_value(P,J,V) interface returns SQLITE_OK if +** and only if *V is set to a value. ^The sqlite3_vtab_rhs_value(P,J,V) +** inteface returns SQLITE_NOTFOUND if the right-hand side of the J-th +** constraint is not available. ^The sqlite3_vtab_rhs_value() interface +** can return an result code other than SQLITE_OK or SQLITE_NOTFOUND if +** something goes wrong. +** +** The sqlite3_vtab_rhs_value() interface is usually only successful if +** the right-hand operand of a constraint is a literal value in the original +** SQL statement. If the right-hand operand is an expression or a reference +** to some other column or a [host parameter], then sqlite3_vtab_rhs_value() +** will probably return [SQLITE_NOTFOUND]. +** +** ^(Some constraints, such as [SQLITE_INDEX_CONSTRAINT_ISNULL] and +** [SQLITE_INDEX_CONSTRAINT_ISNOTNULL], have no right-hand operand. For such +** constraints, sqlite3_vtab_rhs_value() always returns SQLITE_NOTFOUND.)^ +** +** ^The [sqlite3_value] object returned in *V is a protected sqlite3_value +** and remains valid for the duration of the xBestIndex method call. +** ^When xBestIndex returns, the sqlite3_value object returned by +** sqlite3_vtab_rhs_value() is automatically deallocated. +** +** The "_rhs_" in the name of this routine is an abbreviation for +** "Right-Hand Side". +*/ +SQLITE_API int sqlite3_vtab_rhs_value(sqlite3_index_info*, int, sqlite3_value **ppVal); /* ** CAPI3REF: Conflict resolution modes @@ -9623,17 +10352,21 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** managed by the prepared statement S and will be automatically freed when ** S is finalized. ** +** Not all values are available for all query elements. When a value is +** not available, the output variable is set to -1 if the value is numeric, +** or to NULL if it is a string (SQLITE_SCANSTAT_NAME). +** **
    ** [[SQLITE_SCANSTAT_NLOOP]]
    SQLITE_SCANSTAT_NLOOP
    -**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be +**
    ^The [sqlite3_int64] variable pointed to by the V parameter will be ** set to the total number of times that the X-th loop has run.
    ** ** [[SQLITE_SCANSTAT_NVISIT]]
    SQLITE_SCANSTAT_NVISIT
    -**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be set +**
    ^The [sqlite3_int64] variable pointed to by the V parameter will be set ** to the total number of rows examined by all iterations of the X-th loop.
    ** ** [[SQLITE_SCANSTAT_EST]]
    SQLITE_SCANSTAT_EST
    -**
    ^The "double" variable pointed to by the T parameter will be set to the +**
    ^The "double" variable pointed to by the V parameter will be set to the ** query planner's estimate for the average number of rows output from each ** iteration of the X-th loop. If the query planner's estimates was accurate, ** then this value will approximate the quotient NVISIT/NLOOP and the @@ -9641,21 +10374,33 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** be the NLOOP value for the current loop. ** ** [[SQLITE_SCANSTAT_NAME]]
    SQLITE_SCANSTAT_NAME
    -**
    ^The "const char *" variable pointed to by the T parameter will be set +**
    ^The "const char *" variable pointed to by the V parameter will be set ** to a zero-terminated UTF-8 string containing the name of the index or table ** used for the X-th loop. ** ** [[SQLITE_SCANSTAT_EXPLAIN]]
    SQLITE_SCANSTAT_EXPLAIN
    -**
    ^The "const char *" variable pointed to by the T parameter will be set +**
    ^The "const char *" variable pointed to by the V parameter will be set ** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN] ** description for the X-th loop. ** -** [[SQLITE_SCANSTAT_SELECTID]]
    SQLITE_SCANSTAT_SELECT
    -**
    ^The "int" variable pointed to by the T parameter will be set to the -** "select-id" for the X-th loop. The select-id identifies which query or -** subquery the loop is part of. The main query has a select-id of zero. -** The select-id is the same value as is output in the first column -** of an [EXPLAIN QUERY PLAN] query. +** [[SQLITE_SCANSTAT_SELECTID]]
    SQLITE_SCANSTAT_SELECTID
    +**
    ^The "int" variable pointed to by the V parameter will be set to the +** id for the X-th query plan element. The id value is unique within the +** statement. The select-id is the same value as is output in the first +** column of an [EXPLAIN QUERY PLAN] query. +** +** [[SQLITE_SCANSTAT_PARENTID]]
    SQLITE_SCANSTAT_PARENTID
    +**
    The "int" variable pointed to by the V parameter will be set to the +** the id of the parent of the current query element, if applicable, or +** to zero if the query element has no parent. This is the same value as +** returned in the second column of an [EXPLAIN QUERY PLAN] query. +** +** [[SQLITE_SCANSTAT_NCYCLE]]
    SQLITE_SCANSTAT_NCYCLE
    +**
    The sqlite3_int64 output value is set to the number of cycles, +** according to the processor time-stamp counter, that elapsed while the +** query element was being processed. This value is not available for +** all query elements - if it is unavailable the output variable is +** set to -1. **
    */ #define SQLITE_SCANSTAT_NLOOP 0 @@ -9664,12 +10409,14 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ #define SQLITE_SCANSTAT_NAME 3 #define SQLITE_SCANSTAT_EXPLAIN 4 #define SQLITE_SCANSTAT_SELECTID 5 +#define SQLITE_SCANSTAT_PARENTID 6 +#define SQLITE_SCANSTAT_NCYCLE 7 /* ** CAPI3REF: Prepared Statement Scan Status ** METHOD: sqlite3_stmt ** -** This interface returns information about the predicted and measured +** These interfaces return information about the predicted and measured ** performance for pStmt. Advanced applications can use this ** interface to compare the predicted and the measured performance and ** issue warnings and/or rerun [ANALYZE] if discrepancies are found. @@ -9680,19 +10427,25 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_ ** ** The "iScanStatusOp" parameter determines which status information to return. ** The "iScanStatusOp" must be one of the [scanstatus options] or the behavior -** of this interface is undefined. -** ^The requested measurement is written into a variable pointed to by -** the "pOut" parameter. -** Parameter "idx" identifies the specific loop to retrieve statistics for. -** Loops are numbered starting from zero. ^If idx is out of range - less than -** zero or greater than or equal to the total number of loops used to implement -** the statement - a non-zero value is returned and the variable that pOut -** points to is unchanged. +** of this interface is undefined. ^The requested measurement is written into +** a variable pointed to by the "pOut" parameter. ** -** ^Statistics might not be available for all loops in all statements. ^In cases -** where there exist loops with no available statistics, this function behaves -** as if the loop did not exist - it returns non-zero and leave the variable -** that pOut points to unchanged. +** The "flags" parameter must be passed a mask of flags. At present only +** one flag is defined - SQLITE_SCANSTAT_COMPLEX. If SQLITE_SCANSTAT_COMPLEX +** is specified, then status information is available for all elements +** of a query plan that are reported by "EXPLAIN QUERY PLAN" output. If +** SQLITE_SCANSTAT_COMPLEX is not specified, then only query plan elements +** that correspond to query loops (the "SCAN..." and "SEARCH..." elements of +** the EXPLAIN QUERY PLAN output) are available. Invoking API +** sqlite3_stmt_scanstatus() is equivalent to calling +** sqlite3_stmt_scanstatus_v2() with a zeroed flags parameter. +** +** Parameter "idx" identifies the specific query element to retrieve statistics +** for. Query elements are numbered starting from zero. A value of -1 may be +** to query for statistics regarding the entire query. ^If idx is out of range +** - less than -1 or greater than or equal to the total number of query +** elements used to implement the statement - a non-zero value is returned and +** the variable that pOut points to is unchanged. ** ** See also: [sqlite3_stmt_scanstatus_reset()] */ @@ -9701,7 +10454,20 @@ SQLITE_API int sqlite3_stmt_scanstatus( int idx, /* Index of loop to report on */ int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */ void *pOut /* Result written here */ -); +); +SQLITE_API int sqlite3_stmt_scanstatus_v2( + sqlite3_stmt *pStmt, /* Prepared statement for which info desired */ + int idx, /* Index of loop to report on */ + int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */ + int flags, /* Mask of flags defined below */ + void *pOut /* Result written here */ +); + +/* +** CAPI3REF: Prepared Statement Scan Status +** KEYWORDS: {scan status flags} +*/ +#define SQLITE_SCANSTAT_COMPLEX 0x0001 /* ** CAPI3REF: Zero Scan-Status Counters @@ -9716,18 +10482,19 @@ SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*); /* ** CAPI3REF: Flush caches to disk mid-transaction +** METHOD: sqlite3 ** ** ^If a write-transaction is open on [database connection] D when the ** [sqlite3_db_cacheflush(D)] interface invoked, any dirty -** pages in the pager-cache that are not currently in use are written out +** pages in the pager-cache that are not currently in use are written out ** to disk. A dirty page may be in use if a database cursor created by an ** active SQL statement is reading from it, or if it is page 1 of a database ** file (page 1 is always "in use"). ^The [sqlite3_db_cacheflush(D)] ** interface flushes caches for all schemas - "main", "temp", and ** any [attached] databases. ** -** ^If this function needs to obtain extra database locks before dirty pages -** can be flushed to disk, it does so. ^If those locks cannot be obtained +** ^If this function needs to obtain extra database locks before dirty pages +** can be flushed to disk, it does so. ^If those locks cannot be obtained ** immediately and there is a busy-handler callback configured, it is invoked ** in the usual manner. ^If the required lock still cannot be obtained, then ** the database is skipped and an attempt made to flush any dirty pages @@ -9748,6 +10515,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); /* ** CAPI3REF: The pre-update hook. +** METHOD: sqlite3 ** ** ^These interfaces are only available if SQLite is compiled using the ** [SQLITE_ENABLE_PREUPDATE_HOOK] compile-time option. @@ -9765,7 +10533,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** ** ^The preupdate hook only fires for changes to real database tables; the ** preupdate hook is not invoked for changes to [virtual tables] or to -** system tables like sqlite_master or sqlite_stat1. +** system tables like sqlite_sequence or sqlite_stat1. ** ** ^The second parameter to the preupdate callback is a pointer to ** the [database connection] that registered the preupdate hook. @@ -9774,21 +10542,25 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** kind of update operation that is about to occur. ** ^(The fourth parameter to the preupdate callback is the name of the ** database within the database connection that is being modified. This -** will be "main" for the main database or "temp" for TEMP tables or +** will be "main" for the main database or "temp" for TEMP tables or ** the name given after the AS keyword in the [ATTACH] statement for attached ** databases.)^ ** ^The fifth parameter to the preupdate callback is the name of the ** table that is being modified. ** ** For an UPDATE or DELETE operation on a [rowid table], the sixth -** parameter passed to the preupdate callback is the initial [rowid] of the +** parameter passed to the preupdate callback is the initial [rowid] of the ** row being modified or deleted. For an INSERT operation on a rowid table, -** or any operation on a WITHOUT ROWID table, the value of the sixth +** or any operation on a WITHOUT ROWID table, the value of the sixth ** parameter is undefined. For an INSERT or UPDATE on a rowid table the ** seventh parameter is the final rowid value of the row being inserted ** or updated. The value of the seventh parameter passed to the callback ** function is not defined for operations on WITHOUT ROWID tables, or for -** INSERT operations on rowid tables. +** DELETE operations on rowid tables. +** +** ^The sqlite3_preupdate_hook(D,C,P) function returns the P argument from +** the previous call on the same [database connection] D, or NULL for +** the first call on D. ** ** The [sqlite3_preupdate_old()], [sqlite3_preupdate_new()], ** [sqlite3_preupdate_count()], and [sqlite3_preupdate_depth()] interfaces @@ -9822,10 +10594,19 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*); ** ** ^The [sqlite3_preupdate_depth(D)] interface returns 0 if the preupdate ** callback was invoked as a result of a direct insert, update, or delete -** operation; or 1 for inserts, updates, or deletes invoked by top-level +** operation; or 1 for inserts, updates, or deletes invoked by top-level ** triggers; or 2 for changes resulting from triggers called by top-level ** triggers; and so forth. ** +** When the [sqlite3_blob_write()] API is used to update a blob column, +** the pre-update hook is invoked with SQLITE_DELETE. This is because the +** in this case the new values are not available. In this case, when a +** callback made with op==SQLITE_DELETE is actually a write using the +** sqlite3_blob_write() API, the [sqlite3_preupdate_blobwrite()] returns +** the index of the column being written. In other cases, where the +** pre-update hook is being invoked for some other reason, including a +** regular DELETE, sqlite3_preupdate_blobwrite() returns -1. +** ** See also: [sqlite3_update_hook()] */ #if defined(SQLITE_ENABLE_PREUPDATE_HOOK) @@ -9846,24 +10627,25 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *, int, sqlite3_value **); SQLITE_API int sqlite3_preupdate_count(sqlite3 *); SQLITE_API int sqlite3_preupdate_depth(sqlite3 *); SQLITE_API int sqlite3_preupdate_new(sqlite3 *, int, sqlite3_value **); +SQLITE_API int sqlite3_preupdate_blobwrite(sqlite3 *); #endif /* ** CAPI3REF: Low-level system error code +** METHOD: sqlite3 ** ** ^Attempt to return the underlying operating system error code or error ** number that caused the most recent I/O error or failure to open a file. ** The return value is OS-dependent. For example, on unix systems, after ** [sqlite3_open_v2()] returns [SQLITE_CANTOPEN], this interface could be ** called to get back the underlying "errno" that caused the problem, such -** as ENOSPC, EAUTH, EISDIR, and so forth. +** as ENOSPC, EAUTH, EISDIR, and so forth. */ SQLITE_API int sqlite3_system_errno(sqlite3*); /* ** CAPI3REF: Database Snapshot ** KEYWORDS: {snapshot} {sqlite3_snapshot} -** EXPERIMENTAL ** ** An instance of the snapshot object records the state of a [WAL mode] ** database for some specific point in history. @@ -9880,11 +10662,6 @@ SQLITE_API int sqlite3_system_errno(sqlite3*); ** version of the database file so that it is possible to later open a new read ** transaction that sees that historical version of the database rather than ** the most recent version. -** -** The constructor for this object is [sqlite3_snapshot_get()]. The -** [sqlite3_snapshot_open()] method causes a fresh read transaction to refer -** to an historical snapshot (if possible). The destructor for -** sqlite3_snapshot objects is [sqlite3_snapshot_free()]. */ typedef struct sqlite3_snapshot { unsigned char hidden[48]; @@ -9892,7 +10669,7 @@ typedef struct sqlite3_snapshot { /* ** CAPI3REF: Record A Database Snapshot -** EXPERIMENTAL +** CONSTRUCTOR: sqlite3_snapshot ** ** ^The [sqlite3_snapshot_get(D,S,P)] interface attempts to make a ** new [sqlite3_snapshot] object that records the current state of @@ -9900,15 +10677,15 @@ typedef struct sqlite3_snapshot { ** [sqlite3_snapshot_get(D,S,P)] interface writes a pointer to the newly ** created [sqlite3_snapshot] object into *P and returns SQLITE_OK. ** If there is not already a read-transaction open on schema S when -** this function is called, one is opened automatically. +** this function is called, one is opened automatically. ** ** The following must be true for this function to succeed. If any of ** the following statements are false when sqlite3_snapshot_get() is ** called, SQLITE_ERROR is returned. The final value of *P is undefined -** in this case. +** in this case. ** **
      -**
    • The database handle must be in [autocommit mode]. +**
    • The database handle must not be in [autocommit mode]. ** **
    • Schema S of [database connection] D must be a [WAL mode] database. ** @@ -9917,13 +10694,13 @@ typedef struct sqlite3_snapshot { ** **
    • One or more transactions must have been written to the current wal ** file since it was created on disk (by any connection). This means -** that a snapshot cannot be taken on a wal mode database with no wal +** that a snapshot cannot be taken on a wal mode database with no wal ** file immediately after it is first opened. At least one transaction ** must be written to it first. **
    ** ** This function may also return SQLITE_NOMEM. If it is called with the -** database handle in autocommit mode but fails for some other reason, +** database handle in autocommit mode but fails for some other reason, ** whether or not a read transaction is opened on schema S is undefined. ** ** The [sqlite3_snapshot] object returned from a successful call to @@ -9931,7 +10708,7 @@ typedef struct sqlite3_snapshot { ** to avoid a memory leak. ** ** The [sqlite3_snapshot_get()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get( sqlite3 *db, @@ -9941,35 +10718,46 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get( /* ** CAPI3REF: Start a read transaction on an historical snapshot -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** -** ^The [sqlite3_snapshot_open(D,S,P)] interface starts a -** read transaction for schema S of -** [database connection] D such that the read transaction -** refers to historical [snapshot] P, rather than the most -** recent change to the database. -** ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK on success -** or an appropriate [error code] if it fails. +** ^The [sqlite3_snapshot_open(D,S,P)] interface either starts a new read +** transaction or upgrades an existing one for schema S of +** [database connection] D such that the read transaction refers to +** historical [snapshot] P, rather than the most recent change to the +** database. ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK +** on success or an appropriate [error code] if it fails. +** +** ^In order to succeed, the database connection must not be in +** [autocommit mode] when [sqlite3_snapshot_open(D,S,P)] is called. If there +** is already a read transaction open on schema S, then the database handle +** must have no active statements (SELECT statements that have been passed +** to sqlite3_step() but not sqlite3_reset() or sqlite3_finalize()). +** SQLITE_ERROR is returned if either of these conditions is violated, or +** if schema S does not exist, or if the snapshot object is invalid. +** +** ^A call to sqlite3_snapshot_open() will fail to open if the specified +** snapshot has been overwritten by a [checkpoint]. In this case +** SQLITE_ERROR_SNAPSHOT is returned. +** +** If there is already a read transaction open when this function is +** invoked, then the same read transaction remains open (on the same +** database snapshot) if SQLITE_ERROR, SQLITE_BUSY or SQLITE_ERROR_SNAPSHOT +** is returned. If another error code - for example SQLITE_PROTOCOL or an +** SQLITE_IOERR error code - is returned, then the final state of the +** read transaction is undefined. If SQLITE_OK is returned, then the +** read transaction is now open on database snapshot P. ** -** ^In order to succeed, a call to [sqlite3_snapshot_open(D,S,P)] must be -** the first operation following the [BEGIN] that takes the schema S -** out of [autocommit mode]. -** ^In other words, schema S must not currently be in -** a transaction for [sqlite3_snapshot_open(D,S,P)] to work, but the -** database connection D must be out of [autocommit mode]. -** ^A [snapshot] will fail to open if it has been overwritten by a -** [checkpoint]. ** ^(A call to [sqlite3_snapshot_open(D,S,P)] will fail if the ** database connection D does not know that the database file for ** schema S is in [WAL mode]. A database connection might not know ** that the database file is in [WAL mode] if there has been no prior -** I/O on that database connection, or if the database entered [WAL mode] +** I/O on that database connection, or if the database entered [WAL mode] ** after the most recent I/O on the database connection.)^ ** (Hint: Run "[PRAGMA application_id]" against a newly opened ** database connection in order to make it ready to use snapshots.) ** ** The [sqlite3_snapshot_open()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open( sqlite3 *db, @@ -9979,38 +10767,41 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open( /* ** CAPI3REF: Destroy a snapshot -** EXPERIMENTAL +** DESTRUCTOR: sqlite3_snapshot ** ** ^The [sqlite3_snapshot_free(P)] interface destroys [sqlite3_snapshot] P. ** The application must eventually free every [sqlite3_snapshot] object ** using this routine to avoid a memory leak. ** ** The [sqlite3_snapshot_free()] interface is only available when the -** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +** [SQLITE_ENABLE_SNAPSHOT] compile-time option is used. */ SQLITE_API SQLITE_EXPERIMENTAL void sqlite3_snapshot_free(sqlite3_snapshot*); /* ** CAPI3REF: Compare the ages of two snapshot handles. -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** ** The sqlite3_snapshot_cmp(P1, P2) interface is used to compare the ages -** of two valid snapshot handles. +** of two valid snapshot handles. ** -** If the two snapshot handles are not associated with the same database -** file, the result of the comparison is undefined. +** If the two snapshot handles are not associated with the same database +** file, the result of the comparison is undefined. ** ** Additionally, the result of the comparison is only valid if both of the ** snapshot handles were obtained by calling sqlite3_snapshot_get() since the ** last time the wal file was deleted. The wal file is deleted when the ** database is changed back to rollback mode or when the number of database -** clients drops to zero. If either snapshot handle was obtained before the -** wal file was last deleted, the value returned by this function +** clients drops to zero. If either snapshot handle was obtained before the +** wal file was last deleted, the value returned by this function ** is undefined. ** ** Otherwise, this API returns a negative value if P1 refers to an older ** snapshot than P2, zero if the two handles refer to the same database ** snapshot, and a positive value if P1 is a newer snapshot than P2. +** +** This interface is only available if SQLite is compiled with the +** [SQLITE_ENABLE_SNAPSHOT] option. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp( sqlite3_snapshot *p1, @@ -10019,23 +10810,26 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp( /* ** CAPI3REF: Recover snapshots from a wal file -** EXPERIMENTAL +** METHOD: sqlite3_snapshot ** -** If all connections disconnect from a database file but do not perform -** a checkpoint, the existing wal file is opened along with the database -** file the next time the database is opened. At this point it is only -** possible to successfully call sqlite3_snapshot_open() to open the most -** recent snapshot of the database (the one at the head of the wal file), -** even though the wal file may contain other valid snapshots for which -** clients have sqlite3_snapshot handles. +** If a [WAL file] remains on disk after all database connections close +** (either through the use of the [SQLITE_FCNTL_PERSIST_WAL] [file control] +** or because the last process to have the database opened exited without +** calling [sqlite3_close()]) and a new connection is subsequently opened +** on that database and [WAL file], the [sqlite3_snapshot_open()] interface +** will only be able to open the last transaction added to the WAL file +** even though the WAL file contains other valid transactions. ** -** This function attempts to scan the wal file associated with database zDb +** This function attempts to scan the WAL file associated with database zDb ** of database handle db and make all valid snapshots available to ** sqlite3_snapshot_open(). It is an error if there is already a read -** transaction open on the database, or if the database is not a wal mode +** transaction open on the database, or if the database is not a WAL mode ** database. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +** +** This interface is only available if SQLite is compiled with the +** [SQLITE_ENABLE_SNAPSHOT] option. */ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb); @@ -10064,7 +10858,7 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const c ** representation of the database will usually only exist if there has ** been a prior call to [sqlite3_deserialize(D,S,...)] with the same ** values of D and S. -** The size of the database is written into *P even if the +** The size of the database is written into *P even if the ** SQLITE_SERIALIZE_NOCOPY bit is set but no contiguous copy ** of the database exists. ** @@ -10072,8 +10866,8 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const c ** SQLITE_SERIALIZE_NOCOPY bit is omitted from argument F if a memory ** allocation error occurs. ** -** This interface is only available if SQLite is compiled with the -** [SQLITE_ENABLE_DESERIALIZE] option. +** This interface is omitted if SQLite is compiled with the +** [SQLITE_OMIT_DESERIALIZE] option. */ SQLITE_API unsigned char *sqlite3_serialize( sqlite3 *db, /* The database connection */ @@ -10101,7 +10895,7 @@ SQLITE_API unsigned char *sqlite3_serialize( /* ** CAPI3REF: Deserialize a database ** -** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the +** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the ** [database connection] D to disconnect from database S and then ** reopen S as an in-memory database based on the serialization contained ** in P. The serialized database P is N bytes in size. M is the size of @@ -10120,12 +10914,16 @@ SQLITE_API unsigned char *sqlite3_serialize( ** database is currently in a read transaction or is involved in a backup ** operation. ** -** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the +** It is not possible to deserialized into the TEMP database. If the +** S argument to sqlite3_deserialize(D,S,P,N,M,F) is "temp" then the +** function returns SQLITE_ERROR. +** +** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the ** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then ** [sqlite3_free()] is invoked on argument P prior to returning. ** -** This interface is only available if SQLite is compiled with the -** [SQLITE_ENABLE_DESERIALIZE] option. +** This interface is omitted if SQLite is compiled with the +** [SQLITE_OMIT_DESERIALIZE] option. */ SQLITE_API int sqlite3_deserialize( sqlite3 *db, /* The database connection */ @@ -10146,7 +10944,7 @@ SQLITE_API int sqlite3_deserialize( ** in the P argument is held in memory obtained from [sqlite3_malloc64()] ** and that SQLite should take ownership of this memory and automatically ** free it when it has finished using it. Without this flag, the caller -** is resposible for freeing any dynamically allocated memory. +** is responsible for freeing any dynamically allocated memory. ** ** The SQLITE_DESERIALIZE_RESIZEABLE flag means that SQLite is allowed to ** grow the size of the database using calls to [sqlite3_realloc64()]. This @@ -10169,6 +10967,19 @@ SQLITE_API int sqlite3_deserialize( # undef double #endif +#if defined(__wasi__) +# undef SQLITE_WASI +# define SQLITE_WASI 1 +# undef SQLITE_OMIT_WAL +# define SQLITE_OMIT_WAL 1/* because it requires shared memory APIs */ +# ifndef SQLITE_OMIT_LOAD_EXTENSION +# define SQLITE_OMIT_LOAD_EXTENSION +# endif +# ifndef SQLITE_THREADSAFE +# define SQLITE_THREADSAFE 0 +# endif +#endif + #if 0 } /* End of the 'extern "C"' block */ #endif @@ -10235,7 +11046,7 @@ struct sqlite3_rtree_geometry { }; /* -** Register a 2nd-generation geometry callback named zScore that can be +** Register a 2nd-generation geometry callback named zScore that can be ** used as part of an R-Tree geometry query as follows: ** ** SELECT ... FROM WHERE MATCH $zQueryFunc(... params ...) @@ -10250,7 +11061,7 @@ SQLITE_API int sqlite3_rtree_query_callback( /* -** A pointer to a structure of the following type is passed as the +** A pointer to a structure of the following type is passed as the ** argument to scored geometry callback registered using ** sqlite3_rtree_query_callback(). ** @@ -10272,7 +11083,7 @@ struct sqlite3_rtree_query_info { sqlite3_int64 iRowid; /* Rowid for current entry */ sqlite3_rtree_dbl rParentScore; /* Score of parent node */ int eParentWithin; /* Visibility of parent node */ - int eWithin; /* OUT: Visiblity */ + int eWithin; /* OUT: Visibility */ sqlite3_rtree_dbl rScore; /* OUT: Write the score here */ /* The following fields are only available in 3.8.11 and later */ sqlite3_value **apSqlParam; /* Original SQL values of parameters */ @@ -10345,7 +11156,7 @@ typedef struct sqlite3_changeset_iter sqlite3_changeset_iter; ** is not possible for an application to register a pre-update hook on a ** database handle that has one or more session objects attached. Nor is ** it possible to create a session object attached to a database handle for -** which a pre-update hook is already defined. The results of attempting +** which a pre-update hook is already defined. The results of attempting ** either of these things are undefined. ** ** The session object will be used to create changesets for tables in @@ -10363,17 +11174,62 @@ SQLITE_API int sqlite3session_create( ** CAPI3REF: Delete A Session Object ** DESTRUCTOR: sqlite3_session ** -** Delete a session object previously allocated using +** Delete a session object previously allocated using ** [sqlite3session_create()]. Once a session object has been deleted, the ** results of attempting to use pSession with any other session module ** function are undefined. ** ** Session objects must be deleted before the database handle to which they -** are attached is closed. Refer to the documentation for +** are attached is closed. Refer to the documentation for ** [sqlite3session_create()] for details. */ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession); +/* +** CAPI3REF: Configure a Session Object +** METHOD: sqlite3_session +** +** This method is used to configure a session object after it has been +** created. At present the only valid values for the second parameter are +** [SQLITE_SESSION_OBJCONFIG_SIZE] and [SQLITE_SESSION_OBJCONFIG_ROWID]. +** +*/ +SQLITE_API int sqlite3session_object_config(sqlite3_session*, int op, void *pArg); + +/* +** CAPI3REF: Options for sqlite3session_object_config +** +** The following values may passed as the the 2nd parameter to +** sqlite3session_object_config(). +** +**
    SQLITE_SESSION_OBJCONFIG_SIZE
    +** This option is used to set, clear or query the flag that enables +** the [sqlite3session_changeset_size()] API. Because it imposes some +** computational overhead, this API is disabled by default. Argument +** pArg must point to a value of type (int). If the value is initially +** 0, then the sqlite3session_changeset_size() API is disabled. If it +** is greater than 0, then the same API is enabled. Or, if the initial +** value is less than zero, no change is made. In all cases the (int) +** variable is set to 1 if the sqlite3session_changeset_size() API is +** enabled following the current call, or 0 otherwise. +** +** It is an error (SQLITE_MISUSE) to attempt to modify this setting after +** the first table has been attached to the session object. +** +**
    SQLITE_SESSION_OBJCONFIG_ROWID
    +** This option is used to set, clear or query the flag that enables +** collection of data for tables with no explicit PRIMARY KEY. +** +** Normally, tables with no explicit PRIMARY KEY are simply ignored +** by the sessions module. However, if this flag is set, it behaves +** as if such tables have a column "_rowid_ INTEGER PRIMARY KEY" inserted +** as their leftmost columns. +** +** It is an error (SQLITE_MISUSE) to attempt to modify this setting after +** the first table has been attached to the session object. +*/ +#define SQLITE_SESSION_OBJCONFIG_SIZE 1 +#define SQLITE_SESSION_OBJCONFIG_ROWID 2 /* ** CAPI3REF: Enable Or Disable A Session Object @@ -10387,10 +11243,10 @@ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession); ** the eventual changesets. ** ** Passing zero to this function disables the session. Passing a value -** greater than zero enables it. Passing a value less than zero is a +** greater than zero enables it. Passing a value less than zero is a ** no-op, and may be used to query the current state of the session. ** -** The return value indicates the final state of the session object: 0 if +** The return value indicates the final state of the session object: 0 if ** the session is disabled, or 1 if it is enabled. */ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); @@ -10405,7 +11261,7 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); **
      **
    • The session object "indirect" flag is set when the change is ** made, or -**
    • The change is made by an SQL trigger or foreign key action +**
    • The change is made by an SQL trigger or foreign key action ** instead of directly as a result of a users SQL statement. **
    ** @@ -10417,10 +11273,10 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); ** flag. If the second argument passed to this function is zero, then the ** indirect flag is cleared. If it is greater than zero, the indirect flag ** is set. Passing a value less than zero does not modify the current value -** of the indirect flag, and may be used to query the current state of the +** of the indirect flag, and may be used to query the current state of the ** indirect flag for the specified session object. ** -** The return value indicates the final state of the indirect flag: 0 if +** The return value indicates the final state of the indirect flag: 0 if ** it is clear, or 1 if it is set. */ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect); @@ -10430,20 +11286,20 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect) ** METHOD: sqlite3_session ** ** If argument zTab is not NULL, then it is the name of a table to attach -** to the session object passed as the first argument. All subsequent changes -** made to the table while the session object is enabled will be recorded. See +** to the session object passed as the first argument. All subsequent changes +** made to the table while the session object is enabled will be recorded. See ** documentation for [sqlite3session_changeset()] for further details. ** ** Or, if argument zTab is NULL, then changes are recorded for all tables -** in the database. If additional tables are added to the database (by -** executing "CREATE TABLE" statements) after this call is made, changes for +** in the database. If additional tables are added to the database (by +** executing "CREATE TABLE" statements) after this call is made, changes for ** the new tables are also recorded. ** ** Changes can only be recorded for tables that have a PRIMARY KEY explicitly -** defined as part of their CREATE TABLE statement. It does not matter if the +** defined as part of their CREATE TABLE statement. It does not matter if the ** PRIMARY KEY is an "INTEGER PRIMARY KEY" (rowid alias) or not. The PRIMARY ** KEY may consist of a single column, or may be a composite key. -** +** ** It is not an error if the named table does not exist in the database. Nor ** is it an error if the named table does not have a PRIMARY KEY. However, ** no changes will be recorded in either of these scenarios. @@ -10451,29 +11307,29 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect) ** Changes are not recorded for individual rows that have NULL values stored ** in one or more of their PRIMARY KEY columns. ** -** SQLITE_OK is returned if the call completes without error. Or, if an error +** SQLITE_OK is returned if the call completes without error. Or, if an error ** occurs, an SQLite error code (e.g. SQLITE_NOMEM) is returned. ** **

    Special sqlite_stat1 Handling

    ** -** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to +** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to ** some of the rules above. In SQLite, the schema of sqlite_stat1 is: ** 
    -**        CREATE TABLE sqlite_stat1(tbl,idx,stat)  
+**        CREATE TABLE sqlite_stat1(tbl,idx,stat)
 **
    ** -** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are -** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes +** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are +** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes ** are recorded for rows for which (idx IS NULL) is true. However, for such ** rows a zero-length blob (SQL value X'') is stored in the changeset or ** patchset instead of a NULL value. This allows such changesets to be ** manipulated by legacy implementations of sqlite3changeset_invert(), ** concat() and similar. ** -** The sqlite3changeset_apply() function automatically converts the +** The sqlite3changeset_apply() function automatically converts the ** zero-length blob back to a NULL value when updating the sqlite_stat1 ** table. However, if the application calls sqlite3changeset_new(), -** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset +** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset ** iterator directly (including on a changeset iterator passed to a ** conflict-handler callback) then the X'' value is returned. The application ** must translate X'' to NULL itself if required. @@ -10492,10 +11348,10 @@ SQLITE_API int sqlite3session_attach( ** CAPI3REF: Set a table filter on a Session Object. ** METHOD: sqlite3_session ** -** The second argument (xFilter) is the "filter callback". For changes to rows +** The second argument (xFilter) is the "filter callback". For changes to rows ** in tables that are not attached to the Session object, the filter is called -** to determine whether changes to the table's rows should be tracked or not. -** If xFilter returns 0, changes is not tracked. Note that once a table is +** to determine whether changes to the table's rows should be tracked or not. +** If xFilter returns 0, changes are not tracked. Note that once a table is ** attached, xFilter will not be called again. */ SQLITE_API void sqlite3session_table_filter( @@ -10511,9 +11367,9 @@ SQLITE_API void sqlite3session_table_filter( ** CAPI3REF: Generate A Changeset From A Session Object ** METHOD: sqlite3_session ** -** Obtain a changeset containing changes to the tables attached to the -** session object passed as the first argument. If successful, -** set *ppChangeset to point to a buffer containing the changeset +** Obtain a changeset containing changes to the tables attached to the +** session object passed as the first argument. If successful, +** set *ppChangeset to point to a buffer containing the changeset ** and *pnChangeset to the size of the changeset in bytes before returning ** SQLITE_OK. If an error occurs, set both *ppChangeset and *pnChangeset to ** zero and return an SQLite error code. @@ -10528,7 +11384,7 @@ SQLITE_API void sqlite3session_table_filter( ** modifies the values of primary key columns. If such a change is made, it ** is represented in a changeset as a DELETE followed by an INSERT. ** -** Changes are not recorded for rows that have NULL values stored in one or +** Changes are not recorded for rows that have NULL values stored in one or ** more of their PRIMARY KEY columns. If such a row is inserted or deleted, ** no corresponding change is present in the changesets returned by this ** function. If an existing row with one or more NULL values stored in @@ -10581,14 +11437,14 @@ SQLITE_API void sqlite3session_table_filter( **
      **
    • For each record generated by an insert, the database is queried ** for a row with a matching primary key. If one is found, an INSERT -** change is added to the changeset. If no such row is found, no change +** change is added to the changeset. If no such row is found, no change ** is added to the changeset. ** -**
    • For each record generated by an update or delete, the database is +**
    • For each record generated by an update or delete, the database is ** queried for a row with a matching primary key. If such a row is ** found and one or more of the non-primary key fields have been -** modified from their original values, an UPDATE change is added to -** the changeset. Or, if no such row is found in the table, a DELETE +** modified from their original values, an UPDATE change is added to +** the changeset. Or, if no such row is found in the table, a DELETE ** change is added to the changeset. If there is a row with a matching ** primary key in the database, but all fields contain their original ** values, no change is added to the changeset. @@ -10596,7 +11452,7 @@ SQLITE_API void sqlite3session_table_filter( ** ** This means, amongst other things, that if a row is inserted and then later ** deleted while a session object is active, neither the insert nor the delete -** will be present in the changeset. Or if a row is deleted and then later a +** will be present in the changeset. Or if a row is deleted and then later a ** row with the same primary key values inserted while a session object is ** active, the resulting changeset will contain an UPDATE change instead of ** a DELETE and an INSERT. @@ -10605,10 +11461,10 @@ SQLITE_API void sqlite3session_table_filter( ** it does not accumulate records when rows are inserted, updated or deleted. ** This may appear to have some counter-intuitive effects if a single row ** is written to more than once during a session. For example, if a row -** is inserted while a session object is enabled, then later deleted while +** is inserted while a session object is enabled, then later deleted while ** the same session object is disabled, no INSERT record will appear in the ** changeset, even though the delete took place while the session was disabled. -** Or, if one field of a row is updated while a session is disabled, and +** Or, if one field of a row is updated while a session is disabled, and ** another field of the same row is updated while the session is enabled, the ** resulting changeset will contain an UPDATE change that updates both fields. */ @@ -10618,6 +11474,22 @@ SQLITE_API int sqlite3session_changeset( void **ppChangeset /* OUT: Buffer containing changeset */ ); +/* +** CAPI3REF: Return An Upper-limit For The Size Of The Changeset +** METHOD: sqlite3_session +** +** By default, this function always returns 0. For it to return +** a useful result, the sqlite3_session object must have been configured +** to enable this API using sqlite3session_object_config() with the +** SQLITE_SESSION_OBJCONFIG_SIZE verb. +** +** When enabled, this function returns an upper limit, in bytes, for the size +** of the changeset that might be produced if sqlite3session_changeset() were +** called. The final changeset size might be equal to or smaller than the +** size in bytes returned by this function. +*/ +SQLITE_API sqlite3_int64 sqlite3session_changeset_size(sqlite3_session *pSession); + /* ** CAPI3REF: Load The Difference Between Tables Into A Session ** METHOD: sqlite3_session @@ -10629,7 +11501,7 @@ SQLITE_API int sqlite3session_changeset( ** an error). ** ** Argument zFromDb must be the name of a database ("main", "temp" etc.) -** attached to the same database handle as the session object that contains +** attached to the same database handle as the session object that contains ** a table compatible with the table attached to the session by this function. ** A table is considered compatible if it: ** @@ -10645,33 +11517,33 @@ SQLITE_API int sqlite3session_changeset( ** APIs, tables without PRIMARY KEYs are simply ignored. ** ** This function adds a set of changes to the session object that could be -** used to update the table in database zFrom (call this the "from-table") -** so that its content is the same as the table attached to the session +** used to update the table in database zFrom (call this the "from-table") +** so that its content is the same as the table attached to the session ** object (call this the "to-table"). Specifically: ** **
        -**
      • For each row (primary key) that exists in the to-table but not in +**
      • For each row (primary key) that exists in the to-table but not in ** the from-table, an INSERT record is added to the session object. ** -**
      • For each row (primary key) that exists in the to-table but not in +**
      • For each row (primary key) that exists in the to-table but not in ** the from-table, a DELETE record is added to the session object. ** -**
      • For each row (primary key) that exists in both tables, but features +**
      • For each row (primary key) that exists in both tables, but features ** different non-PK values in each, an UPDATE record is added to the -** session. +** session. **
      ** ** To clarify, if this function is called and then a changeset constructed -** using [sqlite3session_changeset()], then after applying that changeset to -** database zFrom the contents of the two compatible tables would be +** using [sqlite3session_changeset()], then after applying that changeset to +** database zFrom the contents of the two compatible tables would be ** identical. ** ** It an error if database zFrom does not exist or does not contain the ** required compatible table. ** -** If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite +** If the operation is successful, SQLITE_OK is returned. Otherwise, an SQLite ** error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg -** may be set to point to a buffer containing an English language error +** may be set to point to a buffer containing an English language error ** message. It is the responsibility of the caller to free this buffer using ** sqlite3_free(). */ @@ -10690,19 +11562,19 @@ SQLITE_API int sqlite3session_diff( ** The differences between a patchset and a changeset are that: ** **
        -**
      • DELETE records consist of the primary key fields only. The +**
      • DELETE records consist of the primary key fields only. The ** original values of other fields are omitted. -**
      • The original values of any modified fields are omitted from +**
      • The original values of any modified fields are omitted from ** UPDATE records. **
      ** -** A patchset blob may be used with up to date versions of all -** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(), +** A patchset blob may be used with up to date versions of all +** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(), ** which returns SQLITE_CORRUPT if it is passed a patchset. Similarly, ** attempting to use a patchset blob with old versions of the -** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error. +** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error. ** -** Because the non-primary key "old.*" fields are omitted, no +** Because the non-primary key "old.*" fields are omitted, no ** SQLITE_CHANGESET_DATA conflicts can be detected or reported if a patchset ** is passed to the sqlite3changeset_apply() API. Other conflict types work ** in the same way as for changesets. @@ -10721,22 +11593,30 @@ SQLITE_API int sqlite3session_patchset( /* ** CAPI3REF: Test if a changeset has recorded any changes. ** -** Return non-zero if no changes to attached tables have been recorded by -** the session object passed as the first argument. Otherwise, if one or +** Return non-zero if no changes to attached tables have been recorded by +** the session object passed as the first argument. Otherwise, if one or ** more changes have been recorded, return zero. ** ** Even if this function returns zero, it is possible that calling ** [sqlite3session_changeset()] on the session handle may still return a -** changeset that contains no changes. This can happen when a row in -** an attached table is modified and then later on the original values +** changeset that contains no changes. This can happen when a row in +** an attached table is modified and then later on the original values ** are restored. However, if this function returns non-zero, then it is -** guaranteed that a call to sqlite3session_changeset() will return a +** guaranteed that a call to sqlite3session_changeset() will return a ** changeset containing zero changes. */ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); /* -** CAPI3REF: Create An Iterator To Traverse A Changeset +** CAPI3REF: Query for the amount of heap memory used by a session object. +** +** This API returns the total amount of heap memory in bytes currently +** used by the session object passed as the only argument. +*/ +SQLITE_API sqlite3_int64 sqlite3session_memory_used(sqlite3_session *pSession); + +/* +** CAPI3REF: Create An Iterator To Traverse A Changeset ** CONSTRUCTOR: sqlite3_changeset_iter ** ** Create an iterator used to iterate through the contents of a changeset. @@ -10744,7 +11624,7 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); ** is returned. Otherwise, if an error occurs, *pp is set to zero and an ** SQLite error code is returned. ** -** The following functions can be used to advance and query a changeset +** The following functions can be used to advance and query a changeset ** iterator created by this function: ** **
        @@ -10761,26 +11641,52 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); ** ** Assuming the changeset blob was created by one of the ** [sqlite3session_changeset()], [sqlite3changeset_concat()] or -** [sqlite3changeset_invert()] functions, all changes within the changeset -** that apply to a single table are grouped together. This means that when -** an application iterates through a changeset using an iterator created by -** this function, all changes that relate to a single table are visited -** consecutively. There is no chance that the iterator will visit a change -** the applies to table X, then one for table Y, and then later on visit +** [sqlite3changeset_invert()] functions, all changes within the changeset +** that apply to a single table are grouped together. This means that when +** an application iterates through a changeset using an iterator created by +** this function, all changes that relate to a single table are visited +** consecutively. There is no chance that the iterator will visit a change +** the applies to table X, then one for table Y, and then later on visit ** another change for table X. +** +** The behavior of sqlite3changeset_start_v2() and its streaming equivalent +** may be modified by passing a combination of +** [SQLITE_CHANGESETSTART_INVERT | supported flags] as the 4th parameter. +** +** Note that the sqlite3changeset_start_v2() API is still experimental +** and therefore subject to change. */ SQLITE_API int sqlite3changeset_start( sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */ int nChangeset, /* Size of changeset blob in bytes */ void *pChangeset /* Pointer to blob containing changeset */ ); +SQLITE_API int sqlite3changeset_start_v2( + sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */ + int nChangeset, /* Size of changeset blob in bytes */ + void *pChangeset, /* Pointer to blob containing changeset */ + int flags /* SESSION_CHANGESETSTART_* flags */ +); + +/* +** CAPI3REF: Flags for sqlite3changeset_start_v2 +** +** The following flags may passed via the 4th parameter to +** [sqlite3changeset_start_v2] and [sqlite3changeset_start_v2_strm]: +** +**
        SQLITE_CHANGESETAPPLY_INVERT
        +** Invert the changeset while iterating through it. This is equivalent to +** inverting a changeset using sqlite3changeset_invert() before applying it. +** It is an error to specify this flag with a patchset. +*/ +#define SQLITE_CHANGESETSTART_INVERT 0x0002 /* ** CAPI3REF: Advance A Changeset Iterator ** METHOD: sqlite3_changeset_iter ** -** This function may only be used with iterators created by function +** This function may only be used with iterators created by the function ** [sqlite3changeset_start()]. If it is called on an iterator passed to ** a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE ** is returned and the call has no effect. @@ -10791,12 +11697,12 @@ SQLITE_API int sqlite3changeset_start( ** point to the first change in the changeset. Each subsequent call advances ** the iterator to point to the next change in the changeset (if any). If ** no error occurs and the iterator points to a valid change after a call -** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned. +** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned. ** Otherwise, if all changes in the changeset have already been visited, ** SQLITE_DONE is returned. ** -** If an error occurs, an SQLite error code is returned. Possible error -** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or +** If an error occurs, an SQLite error code is returned. Possible error +** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or ** SQLITE_NOMEM. */ SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter); @@ -10811,18 +11717,23 @@ SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter); ** call to [sqlite3changeset_next()] must have returned [SQLITE_ROW]. If this ** is not the case, this function returns [SQLITE_MISUSE]. ** -** If argument pzTab is not NULL, then *pzTab is set to point to a -** nul-terminated utf-8 encoded string containing the name of the table -** affected by the current change. The buffer remains valid until either -** sqlite3changeset_next() is called on the iterator or until the -** conflict-handler function returns. If pnCol is not NULL, then *pnCol is -** set to the number of columns in the table affected by the change. If -** pbIncorrect is not NULL, then *pbIndirect is set to true (1) if the change +** Arguments pOp, pnCol and pzTab may not be NULL. Upon return, three +** outputs are set through these pointers: +** +** *pOp is set to one of [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], +** depending on the type of change that the iterator currently points to; +** +** *pnCol is set to the number of columns in the table affected by the change; and +** +** *pzTab is set to point to a nul-terminated utf-8 encoded string containing +** the name of the table affected by the current change. The buffer remains +** valid until either sqlite3changeset_next() is called on the iterator +** or until the conflict-handler function returns. +** +** If pbIndirect is not NULL, then *pbIndirect is set to true (1) if the change ** is an indirect change, or false (0) otherwise. See the documentation for ** [sqlite3session_indirect()] for a description of direct and indirect -** changes. Finally, if pOp is not NULL, then *pOp is set to one of -** [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the -** type of change that the iterator currently points to. +** changes. ** ** If no error occurs, SQLITE_OK is returned. If an error does occur, an ** SQLite error code is returned. The values of the output variables may not @@ -10875,7 +11786,7 @@ SQLITE_API int sqlite3changeset_pk( ** The pIter argument passed to this function may either be an iterator ** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator ** created by [sqlite3changeset_start()]. In the latter case, the most recent -** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. ** Furthermore, it may only be called if the type of change that the iterator ** currently points to is either [SQLITE_DELETE] or [SQLITE_UPDATE]. Otherwise, ** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. @@ -10885,9 +11796,9 @@ SQLITE_API int sqlite3changeset_pk( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the vector of +** sqlite3_value object containing the iVal'th value from the vector of ** original row values stored as part of the UPDATE or DELETE change and -** returns SQLITE_OK. The name of the function comes from the fact that this +** returns SQLITE_OK. The name of the function comes from the fact that this ** is similar to the "old.*" columns available to update or delete triggers. ** ** If some other error occurs (e.g. an OOM condition), an SQLite error code @@ -10906,7 +11817,7 @@ SQLITE_API int sqlite3changeset_old( ** The pIter argument passed to this function may either be an iterator ** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator ** created by [sqlite3changeset_start()]. In the latter case, the most recent -** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. ** Furthermore, it may only be called if the type of change that the iterator ** currently points to is either [SQLITE_UPDATE] or [SQLITE_INSERT]. Otherwise, ** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. @@ -10916,12 +11827,12 @@ SQLITE_API int sqlite3changeset_old( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the vector of +** sqlite3_value object containing the iVal'th value from the vector of ** new row values stored as part of the UPDATE or INSERT change and ** returns SQLITE_OK. If the change is an UPDATE and does not include -** a new value for the requested column, *ppValue is set to NULL and -** SQLITE_OK returned. The name of the function comes from the fact that -** this is similar to the "new.*" columns available to update or delete +** a new value for the requested column, *ppValue is set to NULL and +** SQLITE_OK returned. The name of the function comes from the fact that +** this is similar to the "new.*" columns available to update or delete ** triggers. ** ** If some other error occurs (e.g. an OOM condition), an SQLite error code @@ -10948,7 +11859,7 @@ SQLITE_API int sqlite3changeset_new( ** [SQLITE_RANGE] is returned and *ppValue is set to NULL. ** ** If successful, this function sets *ppValue to point to a protected -** sqlite3_value object containing the iVal'th value from the +** sqlite3_value object containing the iVal'th value from the ** "conflicting row" associated with the current conflict-handler callback ** and returns SQLITE_OK. ** @@ -10992,7 +11903,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts( ** call has no effect. ** ** If an error was encountered within a call to an sqlite3changeset_xxx() -** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an +** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an ** [SQLITE_NOMEM] in [sqlite3changeset_new()]) then an error code corresponding ** to that error is returned by this function. Otherwise, SQLITE_OK is ** returned. This is to allow the following pattern (pseudo-code): @@ -11004,7 +11915,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts( ** } ** rc = sqlite3changeset_finalize(); ** if( rc!=SQLITE_OK ){ -** // An error has occurred +** // An error has occurred ** } ** */ @@ -11032,7 +11943,7 @@ SQLITE_API int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter); ** zeroed and an SQLite error code returned. ** ** It is the responsibility of the caller to eventually call sqlite3_free() -** on the *ppOut pointer to free the buffer allocation following a successful +** on the *ppOut pointer to free the buffer allocation following a successful ** call to this function. ** ** WARNING/TODO: This function currently assumes that the input is a valid @@ -11046,11 +11957,11 @@ SQLITE_API int sqlite3changeset_invert( /* ** CAPI3REF: Concatenate Two Changeset Objects ** -** This function is used to concatenate two changesets, A and B, into a +** This function is used to concatenate two changesets, A and B, into a ** single changeset. The result is a changeset equivalent to applying -** changeset A followed by changeset B. +** changeset A followed by changeset B. ** -** This function combines the two input changesets using an +** This function combines the two input changesets using an ** sqlite3_changegroup object. Calling it produces similar results as the ** following code fragment: ** @@ -11082,7 +11993,7 @@ SQLITE_API int sqlite3changeset_concat( /* ** CAPI3REF: Changegroup Handle ** -** A changegroup is an object used to combine two or more +** A changegroup is an object used to combine two or more ** [changesets] or [patchsets] */ typedef struct sqlite3_changegroup sqlite3_changegroup; @@ -11098,7 +12009,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; ** ** If successful, this function returns SQLITE_OK and populates (*pp) with ** a pointer to a new sqlite3_changegroup object before returning. The caller -** should eventually free the returned object using a call to +** should eventually free the returned object using a call to ** sqlite3changegroup_delete(). If an error occurs, an SQLite error code ** (i.e. SQLITE_NOMEM) is returned and *pp is set to NULL. ** @@ -11110,7 +12021,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; **
      • Zero or more changesets (or patchsets) are added to the object ** by calling sqlite3changegroup_add(). ** -**
      • The result of combining all input changesets together is obtained +**
      • The result of combining all input changesets together is obtained ** by the application via a call to sqlite3changegroup_output(). ** **
      • The object is deleted using a call to sqlite3changegroup_delete(). @@ -11119,7 +12030,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup; ** Any number of calls to add() and output() may be made between the calls to ** new() and delete(), and in any order. ** -** As well as the regular sqlite3changegroup_add() and +** As well as the regular sqlite3changegroup_add() and ** sqlite3changegroup_output() functions, also available are the streaming ** versions sqlite3changegroup_add_strm() and sqlite3changegroup_output_strm(). */ @@ -11130,7 +12041,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** METHOD: sqlite3_changegroup ** ** Add all changes within the changeset (or patchset) in buffer pData (size -** nData bytes) to the changegroup. +** nData bytes) to the changegroup. ** ** If the buffer contains a patchset, then all prior calls to this function ** on the same changegroup object must also have specified patchsets. Or, if @@ -11157,7 +12068,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** changeset was recorded immediately after the changesets already ** added to the changegroup. ** INSERT UPDATE -** The INSERT change remains in the changegroup. The values in the +** The INSERT change remains in the changegroup. The values in the ** INSERT change are modified as if the row was inserted by the ** existing change and then updated according to the new change. ** INSERT DELETE @@ -11168,17 +12079,17 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** changeset was recorded immediately after the changesets already ** added to the changegroup. ** UPDATE UPDATE -** The existing UPDATE remains within the changegroup. It is amended -** so that the accompanying values are as if the row was updated once +** The existing UPDATE remains within the changegroup. It is amended +** so that the accompanying values are as if the row was updated once ** by the existing change and then again by the new change. ** UPDATE DELETE ** The existing UPDATE is replaced by the new DELETE within the ** changegroup. ** DELETE INSERT ** If one or more of the column values in the row inserted by the -** new change differ from those in the row deleted by the existing +** new change differ from those in the row deleted by the existing ** change, the existing DELETE is replaced by an UPDATE within the -** changegroup. Otherwise, if the inserted row is exactly the same +** changegroup. Otherwise, if the inserted row is exactly the same ** as the deleted row, the existing DELETE is simply discarded. ** DELETE UPDATE ** The new change is ignored. This case does not occur if the new @@ -11196,8 +12107,8 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp); ** case, this function fails with SQLITE_SCHEMA. If the input changeset ** appears to be corrupt and the corruption is detected, SQLITE_CORRUPT is ** returned. Or, if an out-of-memory condition occurs during processing, this -** function returns SQLITE_NOMEM. In all cases, if an error occurs the -** final contents of the changegroup is undefined. +** function returns SQLITE_NOMEM. In all cases, if an error occurs the state +** of the final contents of the changegroup is undefined. ** ** If no error occurs, SQLITE_OK is returned. */ @@ -11223,7 +12134,7 @@ SQLITE_API int sqlite3changegroup_add(sqlite3_changegroup*, int nData, void *pDa ** ** If an error occurs, an SQLite error code is returned and the output ** variables (*pnData) and (*ppData) are set to 0. Otherwise, SQLITE_OK -** is returned and the output variables are set to the size of and a +** is returned and the output variables are set to the size of and a ** pointer to the output buffer, respectively. In this case it is the ** responsibility of the caller to eventually free the buffer using a ** call to sqlite3_free(). @@ -11245,7 +12156,7 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** ** Apply a changeset or patchset to a database. These functions attempt to ** update the "main" database attached to handle db with the changes found in -** the changeset passed via the second and third arguments. +** the changeset passed via the second and third arguments. ** ** The fourth argument (xFilter) passed to these functions is the "filter ** callback". If it is not NULL, then for each table affected by at least one @@ -11256,16 +12167,16 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** Otherwise, if the return value is non-zero or the xFilter argument to ** is NULL, all changes related to the table are attempted. ** -** For each table that is not excluded by the filter callback, this function -** tests that the target database contains a compatible table. A table is +** For each table that is not excluded by the filter callback, this function +** tests that the target database contains a compatible table. A table is ** considered compatible if all of the following are true: ** **
          -**
        • The table has the same name as the name recorded in the +**
        • The table has the same name as the name recorded in the ** changeset, and -**
        • The table has at least as many columns as recorded in the +**
        • The table has at least as many columns as recorded in the ** changeset, and -**
        • The table has primary key columns in the same position as +**
        • The table has primary key columns in the same position as ** recorded in the changeset. **
        ** @@ -11274,11 +12185,11 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** via the sqlite3_log() mechanism with the error code SQLITE_SCHEMA. At most ** one such warning is issued for each table in the changeset. ** -** For each change for which there is a compatible table, an attempt is made -** to modify the table contents according to the UPDATE, INSERT or DELETE -** change. If a change cannot be applied cleanly, the conflict handler -** function passed as the fifth argument to sqlite3changeset_apply() may be -** invoked. A description of exactly when the conflict handler is invoked for +** For each change for which there is a compatible table, an attempt is made +** to modify the table contents according to the UPDATE, INSERT or DELETE +** change. If a change cannot be applied cleanly, the conflict handler +** function passed as the fifth argument to sqlite3changeset_apply() may be +** invoked. A description of exactly when the conflict handler is invoked for ** each type of change is below. ** ** Unlike the xFilter argument, xConflict may not be passed NULL. The results @@ -11286,23 +12197,23 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** argument are undefined. ** ** Each time the conflict handler function is invoked, it must return one -** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or +** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or ** [SQLITE_CHANGESET_REPLACE]. SQLITE_CHANGESET_REPLACE may only be returned ** if the second argument passed to the conflict handler is either ** SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If the conflict-handler ** returns an illegal value, any changes already made are rolled back and -** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different +** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different ** actions are taken by sqlite3changeset_apply() depending on the value ** returned by each invocation of the conflict-handler function. Refer to -** the documentation for the three +** the documentation for the three ** [SQLITE_CHANGESET_OMIT|available return values] for details. ** **
        **
        DELETE Changes
        -** For each DELETE change, the function checks if the target database -** contains a row with the same primary key value (or values) as the -** original row values stored in the changeset. If it does, and the values -** stored in all non-primary key columns also match the values stored in +** For each DELETE change, the function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values +** stored in all non-primary key columns also match the values stored in ** the changeset the row is deleted from the target database. ** ** If a row with matching primary key values is found, but one or more of @@ -11331,22 +12242,22 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** database table, the trailing fields are populated with their default ** values. ** -** If the attempt to insert the row fails because the database already +** If the attempt to insert the row fails because the database already ** contains a row with the same primary key values, the conflict handler -** function is invoked with the second argument set to +** function is invoked with the second argument set to ** [SQLITE_CHANGESET_CONFLICT]. ** ** If the attempt to insert the row fails because of some other constraint -** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is +** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is ** invoked with the second argument set to [SQLITE_CHANGESET_CONSTRAINT]. -** This includes the case where the INSERT operation is re-attempted because -** an earlier call to the conflict handler function returned +** This includes the case where the INSERT operation is re-attempted because +** an earlier call to the conflict handler function returned ** [SQLITE_CHANGESET_REPLACE]. ** **
        UPDATE Changes
        -** For each UPDATE change, the function checks if the target database -** contains a row with the same primary key value (or values) as the -** original row values stored in the changeset. If it does, and the values +** For each UPDATE change, the function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values ** stored in all modified non-primary key columns also match the values ** stored in the changeset the row is updated within the target database. ** @@ -11362,28 +12273,28 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*); ** the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND] ** passed as the second argument. ** -** If the UPDATE operation is attempted, but SQLite returns -** SQLITE_CONSTRAINT, the conflict-handler function is invoked with +** If the UPDATE operation is attempted, but SQLite returns +** SQLITE_CONSTRAINT, the conflict-handler function is invoked with ** [SQLITE_CHANGESET_CONSTRAINT] passed as the second argument. -** This includes the case where the UPDATE operation is attempted after +** This includes the case where the UPDATE operation is attempted after ** an earlier call to the conflict handler function returned -** [SQLITE_CHANGESET_REPLACE]. +** [SQLITE_CHANGESET_REPLACE]. **
        ** ** It is safe to execute SQL statements, including those that write to the ** table that the callback related to, from within the xConflict callback. -** This can be used to further customize the applications conflict +** This can be used to further customize the application's conflict ** resolution strategy. ** ** All changes made by these functions are enclosed in a savepoint transaction. ** If any other error (aside from a constraint failure when attempting to ** write to the target database) occurs, then the savepoint transaction is -** rolled back, restoring the target database to its original state, and an +** rolled back, restoring the target database to its original state, and an ** SQLite error code returned. ** ** If the output parameters (ppRebase) and (pnRebase) are non-NULL and ** the input is a changeset (not a patchset), then sqlite3changeset_apply_v2() -** may set (*ppRebase) to point to a "rebase" that may be used with the +** may set (*ppRebase) to point to a "rebase" that may be used with the ** sqlite3_rebaser APIs buffer before returning. In this case (*pnRebase) ** is set to the size of the buffer in bytes. It is the responsibility of the ** caller to eventually free any such buffer using sqlite3_free(). The buffer @@ -11428,7 +12339,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ), void *pCtx, /* First argument passed to xConflict */ void **ppRebase, int *pnRebase, /* OUT: Rebase data */ - int flags /* Combination of SESSION_APPLY_* flags */ + int flags /* SESSION_CHANGESETAPPLY_* flags */ ); /* @@ -11444,12 +12355,32 @@ SQLITE_API int sqlite3changeset_apply_v2( ** SAVEPOINT is committed if the changeset or patchset is successfully ** applied, or rolled back if an error occurs. Specifying this flag ** causes the sessions module to omit this savepoint. In this case, if the -** caller has an open transaction or savepoint when apply_v2() is called, +** caller has an open transaction or savepoint when apply_v2() is called, ** it may revert the partially applied changeset by rolling it back. +** +**
        SQLITE_CHANGESETAPPLY_INVERT
        +** Invert the changeset before applying it. This is equivalent to inverting +** a changeset using sqlite3changeset_invert() before applying it. It is +** an error to specify this flag with a patchset. +** +**
        SQLITE_CHANGESETAPPLY_IGNORENOOP
        +** Do not invoke the conflict handler callback for any changes that +** would not actually modify the database even if they were applied. +** Specifically, this means that the conflict handler is not invoked +** for: +**
          +**
        • a delete change if the row being deleted cannot be found, +**
        • an update change if the modified fields are already set to +** their new values in the conflicting row, or +**
        • an insert change if all fields of the conflicting row match +** the row being inserted. +**
        */ #define SQLITE_CHANGESETAPPLY_NOSAVEPOINT 0x0001 +#define SQLITE_CHANGESETAPPLY_INVERT 0x0002 +#define SQLITE_CHANGESETAPPLY_IGNORENOOP 0x0004 -/* +/* ** CAPI3REF: Constants Passed To The Conflict Handler ** ** Values that may be passed as the second argument to a conflict-handler. @@ -11458,32 +12389,32 @@ SQLITE_API int sqlite3changeset_apply_v2( **
        SQLITE_CHANGESET_DATA
        ** The conflict handler is invoked with CHANGESET_DATA as the second argument ** when processing a DELETE or UPDATE change if a row with the required -** PRIMARY KEY fields is present in the database, but one or more other -** (non primary-key) fields modified by the update do not contain the +** PRIMARY KEY fields is present in the database, but one or more other +** (non primary-key) fields modified by the update do not contain the ** expected "before" values. -** +** ** The conflicting row, in this case, is the database row with the matching ** primary key. -** +** **
        SQLITE_CHANGESET_NOTFOUND
        ** The conflict handler is invoked with CHANGESET_NOTFOUND as the second ** argument when processing a DELETE or UPDATE change if a row with the ** required PRIMARY KEY fields is not present in the database. -** +** ** There is no conflicting row in this case. The results of invoking the ** sqlite3changeset_conflict() API are undefined. -** +** **
        SQLITE_CHANGESET_CONFLICT
        ** CHANGESET_CONFLICT is passed as the second argument to the conflict -** handler while processing an INSERT change if the operation would result +** handler while processing an INSERT change if the operation would result ** in duplicate primary key values. -** +** ** The conflicting row in this case is the database row with the matching ** primary key. ** **
        SQLITE_CHANGESET_FOREIGN_KEY
        ** If foreign key handling is enabled, and applying a changeset leaves the -** database in a state containing foreign key violations, the conflict +** database in a state containing foreign key violations, the conflict ** handler is invoked with CHANGESET_FOREIGN_KEY as the second argument ** exactly once before the changeset is committed. If the conflict handler ** returns CHANGESET_OMIT, the changes, including those that caused the @@ -11493,12 +12424,12 @@ SQLITE_API int sqlite3changeset_apply_v2( ** No current or conflicting row information is provided. The only function ** it is possible to call on the supplied sqlite3_changeset_iter handle ** is sqlite3changeset_fk_conflicts(). -** +** **
        SQLITE_CHANGESET_CONSTRAINT
        -** If any other constraint violation occurs while applying a change (i.e. -** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is +** If any other constraint violation occurs while applying a change (i.e. +** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is ** invoked with CHANGESET_CONSTRAINT as the second argument. -** +** ** There is no conflicting row in this case. The results of invoking the ** sqlite3changeset_conflict() API are undefined. ** @@ -11510,7 +12441,7 @@ SQLITE_API int sqlite3changeset_apply_v2( #define SQLITE_CHANGESET_CONSTRAINT 4 #define SQLITE_CHANGESET_FOREIGN_KEY 5 -/* +/* ** CAPI3REF: Constants Returned By The Conflict Handler ** ** A conflict handler callback must return one of the following three values. @@ -11518,13 +12449,13 @@ SQLITE_API int sqlite3changeset_apply_v2( **
        **
        SQLITE_CHANGESET_OMIT
        ** If a conflict handler returns this value no special action is taken. The -** change that caused the conflict is not applied. The session module +** change that caused the conflict is not applied. The session module ** continues to the next change in the changeset. ** **
        SQLITE_CHANGESET_REPLACE
        ** This value may only be returned if the second argument to the conflict ** handler was SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If this -** is not the case, any changes applied so far are rolled back and the +** is not the case, any changes applied so far are rolled back and the ** call to sqlite3changeset_apply() returns SQLITE_MISUSE. ** ** If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_DATA conflict @@ -11537,7 +12468,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the original row is restored to the database before continuing. ** **
        SQLITE_CHANGESET_ABORT
        -** If this value is returned, any changes applied so far are rolled back +** If this value is returned, any changes applied so far are rolled back ** and the call to sqlite3changeset_apply() returns SQLITE_ABORT. **
        */ @@ -11545,20 +12476,20 @@ SQLITE_API int sqlite3changeset_apply_v2( #define SQLITE_CHANGESET_REPLACE 1 #define SQLITE_CHANGESET_ABORT 2 -/* +/* ** CAPI3REF: Rebasing changesets ** EXPERIMENTAL ** ** Suppose there is a site hosting a database in state S0. And that ** modifications are made that move that database to state S1 and a ** changeset recorded (the "local" changeset). Then, a changeset based -** on S0 is received from another site (the "remote" changeset) and -** applied to the database. The database is then in state +** on S0 is received from another site (the "remote" changeset) and +** applied to the database. The database is then in state ** (S1+"remote"), where the exact state depends on any conflict ** resolution decisions (OMIT or REPLACE) made while applying "remote". -** Rebasing a changeset is to update it to take those conflict +** Rebasing a changeset is to update it to take those conflict ** resolution decisions into account, so that the same conflicts -** do not have to be resolved elsewhere in the network. +** do not have to be resolved elsewhere in the network. ** ** For example, if both the local and remote changesets contain an ** INSERT of the same key on "CREATE TABLE t1(a PRIMARY KEY, b)": @@ -11577,7 +12508,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** **
        **
        Local INSERT
        -** This may only conflict with a remote INSERT. If the conflict +** This may only conflict with a remote INSERT. If the conflict ** resolution was OMIT, then add an UPDATE change to the rebased ** changeset. Or, if the conflict resolution was REPLACE, add ** nothing to the rebased changeset. @@ -11601,12 +12532,12 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the old.* values are rebased using the new.* values in the remote ** change. Or, if the resolution is REPLACE, then the change is copied ** into the rebased changeset with updates to columns also updated by -** the conflicting remote UPDATE removed. If this means no columns would +** the conflicting remote UPDATE removed. If this means no columns would ** be updated, the change is omitted. **
        ** -** A local change may be rebased against multiple remote changes -** simultaneously. If a single key is modified by multiple remote +** A local change may be rebased against multiple remote changes +** simultaneously. If a single key is modified by multiple remote ** changesets, they are combined as follows before the local changeset ** is rebased: ** @@ -11619,10 +12550,10 @@ SQLITE_API int sqlite3changeset_apply_v2( ** of the OMIT resolutions. **
      ** -** Note that conflict resolutions from multiple remote changesets are -** combined on a per-field basis, not per-row. This means that in the -** case of multiple remote UPDATE operations, some fields of a single -** local change may be rebased for REPLACE while others are rebased for +** Note that conflict resolutions from multiple remote changesets are +** combined on a per-field basis, not per-row. This means that in the +** case of multiple remote UPDATE operations, some fields of a single +** local change may be rebased for REPLACE while others are rebased for ** OMIT. ** ** In order to rebase a local changeset, the remote changeset must first @@ -11630,7 +12561,7 @@ SQLITE_API int sqlite3changeset_apply_v2( ** the buffer of rebase information captured. Then: ** **
        -**
      1. An sqlite3_rebaser object is created by calling +**
      2. An sqlite3_rebaser object is created by calling ** sqlite3rebaser_create(). **
      3. The new object is configured with the rebase buffer obtained from ** sqlite3changeset_apply_v2() by calling sqlite3rebaser_configure(). @@ -11651,8 +12582,8 @@ typedef struct sqlite3_rebaser sqlite3_rebaser; ** ** Allocate a new changeset rebaser object. If successful, set (*ppNew) to ** point to the new object and return SQLITE_OK. Otherwise, if an error -** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew) -** to NULL. +** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew) +** to NULL. */ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew); @@ -11666,9 +12597,9 @@ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew); ** sqlite3changeset_apply_v2(). */ SQLITE_API int sqlite3rebaser_configure( - sqlite3_rebaser*, + sqlite3_rebaser*, int nRebase, const void *pRebase -); +); /* ** CAPI3REF: Rebase a changeset @@ -11676,9 +12607,9 @@ SQLITE_API int sqlite3rebaser_configure( ** ** Argument pIn must point to a buffer containing a changeset nIn bytes ** in size. This function allocates and populates a buffer with a copy -** of the changeset rebased rebased according to the configuration of the +** of the changeset rebased according to the configuration of the ** rebaser object passed as the first argument. If successful, (*ppOut) -** is set to point to the new buffer containing the rebased changset and +** is set to point to the new buffer containing the rebased changeset and ** (*pnOut) to its size in bytes and SQLITE_OK returned. It is the ** responsibility of the caller to eventually free the new buffer using ** sqlite3_free(). Otherwise, if an error occurs, (*ppOut) and (*pnOut) @@ -11686,8 +12617,8 @@ SQLITE_API int sqlite3rebaser_configure( */ SQLITE_API int sqlite3rebaser_rebase( sqlite3_rebaser*, - int nIn, const void *pIn, - int *pnOut, void **ppOut + int nIn, const void *pIn, + int *pnOut, void **ppOut ); /* @@ -11698,30 +12629,30 @@ SQLITE_API int sqlite3rebaser_rebase( ** should be one call to this function for each successful invocation ** of sqlite3rebaser_create(). */ -SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); +SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); /* ** CAPI3REF: Streaming Versions of API functions. ** -** The six streaming API xxx_strm() functions serve similar purposes to the +** The six streaming API xxx_strm() functions serve similar purposes to the ** corresponding non-streaming API functions: ** ** ** -**
        Streaming functionNon-streaming equivalent
        sqlite3changeset_apply_strm[sqlite3changeset_apply] -**
        sqlite3changeset_apply_strm_v2[sqlite3changeset_apply_v2] -**
        sqlite3changeset_concat_strm[sqlite3changeset_concat] -**
        sqlite3changeset_invert_strm[sqlite3changeset_invert] -**
        sqlite3changeset_start_strm[sqlite3changeset_start] -**
        sqlite3session_changeset_strm[sqlite3session_changeset] -**
        sqlite3session_patchset_strm[sqlite3session_patchset] +**
        sqlite3changeset_apply_strm[sqlite3changeset_apply] +**
        sqlite3changeset_apply_strm_v2[sqlite3changeset_apply_v2] +**
        sqlite3changeset_concat_strm[sqlite3changeset_concat] +**
        sqlite3changeset_invert_strm[sqlite3changeset_invert] +**
        sqlite3changeset_start_strm[sqlite3changeset_start] +**
        sqlite3session_changeset_strm[sqlite3session_changeset] +**
        sqlite3session_patchset_strm[sqlite3session_patchset] **
        ** ** Non-streaming functions that accept changesets (or patchsets) as input -** require that the entire changeset be stored in a single buffer in memory. -** Similarly, those that return a changeset or patchset do so by returning -** a pointer to a single large buffer allocated using sqlite3_malloc(). -** Normally this is convenient. However, if an application running in a +** require that the entire changeset be stored in a single buffer in memory. +** Similarly, those that return a changeset or patchset do so by returning +** a pointer to a single large buffer allocated using sqlite3_malloc(). +** Normally this is convenient. However, if an application running in a ** low-memory environment is required to handle very large changesets, the ** large contiguous memory allocations required can become onerous. ** @@ -11743,12 +12674,12 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** ** ** Each time the xInput callback is invoked by the sessions module, the first -** argument passed is a copy of the supplied pIn context pointer. The second -** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no -** error occurs the xInput method should copy up to (*pnData) bytes of data -** into the buffer and set (*pnData) to the actual number of bytes copied -** before returning SQLITE_OK. If the input is completely exhausted, (*pnData) -** should be set to zero to indicate this. Or, if an error occurs, an SQLite +** argument passed is a copy of the supplied pIn context pointer. The second +** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no +** error occurs the xInput method should copy up to (*pnData) bytes of data +** into the buffer and set (*pnData) to the actual number of bytes copied +** before returning SQLITE_OK. If the input is completely exhausted, (*pnData) +** should be set to zero to indicate this. Or, if an error occurs, an SQLite ** error code should be returned. In all cases, if an xInput callback returns ** an error, all processing is abandoned and the streaming API function ** returns a copy of the error code to the caller. @@ -11756,7 +12687,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** In the case of sqlite3changeset_start_strm(), the xInput callback may be ** invoked by the sessions module at any point during the lifetime of the ** iterator. If such an xInput callback returns an error, the iterator enters -** an error state, whereby all subsequent calls to iterator functions +** an error state, whereby all subsequent calls to iterator functions ** immediately fail with the same error code as returned by xInput. ** ** Similarly, streaming API functions that return changesets (or patchsets) @@ -11786,7 +12717,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p); ** is immediately abandoned and the streaming API function returns a copy ** of the xOutput error code to the application. ** -** The sessions module never invokes an xOutput callback with the third +** The sessions module never invokes an xOutput callback with the third ** parameter set to a value less than or equal to zero. Other than this, ** no guarantees are made as to the size of the chunks of data returned. */ @@ -11841,6 +12772,12 @@ SQLITE_API int sqlite3changeset_start_strm( int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn ); +SQLITE_API int sqlite3changeset_start_v2_strm( + sqlite3_changeset_iter **pp, + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn, + int flags +); SQLITE_API int sqlite3session_changeset_strm( sqlite3_session *pSession, int (*xOutput)(void *pOut, const void *pData, int nData), @@ -11851,12 +12788,12 @@ SQLITE_API int sqlite3session_patchset_strm( int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ); -SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*, +SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*, int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn ); SQLITE_API int sqlite3changegroup_output_strm(sqlite3_changegroup*, - int (*xOutput)(void *pOut, const void *pData, int nData), + int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ); SQLITE_API int sqlite3rebaser_rebase_strm( @@ -11867,6 +12804,45 @@ SQLITE_API int sqlite3rebaser_rebase_strm( void *pOut ); +/* +** CAPI3REF: Configure global parameters +** +** The sqlite3session_config() interface is used to make global configuration +** changes to the sessions module in order to tune it to the specific needs +** of the application. +** +** The sqlite3session_config() interface is not threadsafe. If it is invoked +** while any other thread is inside any other sessions method then the +** results are undefined. Furthermore, if it is invoked after any sessions +** related objects have been created, the results are also undefined. +** +** The first argument to the sqlite3session_config() function must be one +** of the SQLITE_SESSION_CONFIG_XXX constants defined below. The +** interpretation of the (void*) value passed as the second parameter and +** the effect of calling this function depends on the value of the first +** parameter. +** +**
        +**
        SQLITE_SESSION_CONFIG_STRMSIZE
        +** By default, the sessions module streaming interfaces attempt to input +** and output data in approximately 1 KiB chunks. This operand may be used +** to set and query the value of this configuration setting. The pointer +** passed as the second argument must point to a value of type (int). +** If this value is greater than 0, it is used as the new streaming data +** chunk size for both input and output. Before returning, the (int) value +** pointed to by pArg is set to the final value of the streaming interface +** chunk size. +**
        +** +** This function returns SQLITE_OK if successful, or an SQLite error code +** otherwise. +*/ +SQLITE_API int sqlite3session_config(int op, void *pArg); + +/* +** CAPI3REF: Values for sqlite3session_config(). +*/ +#define SQLITE_SESSION_CONFIG_STRMSIZE 1 /* ** Make sure we can call this stuff from C++. @@ -11891,7 +12867,7 @@ SQLITE_API int sqlite3rebaser_rebase_strm( ** ****************************************************************************** ** -** Interfaces to extend FTS5. Using the interfaces defined in this file, +** Interfaces to extend FTS5. Using the interfaces defined in this file, ** FTS5 may be extended with: ** ** * custom tokenizers, and @@ -11935,19 +12911,19 @@ struct Fts5PhraseIter { ** EXTENSION API FUNCTIONS ** ** xUserData(pFts): -** Return a copy of the context pointer the extension function was +** Return a copy of the context pointer the extension function was ** registered with. ** ** xColumnTotalSize(pFts, iCol, pnToken): ** If parameter iCol is less than zero, set output variable *pnToken ** to the total number of tokens in the FTS5 table. Or, if iCol is ** non-negative but less than the number of columns in the table, return -** the total number of tokens in column iCol, considering all rows in +** the total number of tokens in column iCol, considering all rows in ** the FTS5 table. ** ** If parameter iCol is greater than or equal to the number of columns ** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. -** an OOM condition or IO error), an appropriate SQLite error code is +** an OOM condition or IO error), an appropriate SQLite error code is ** returned. ** ** xColumnCount(pFts): @@ -11961,7 +12937,7 @@ struct Fts5PhraseIter { ** ** If parameter iCol is greater than or equal to the number of columns ** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. -** an OOM condition or IO error), an appropriate SQLite error code is +** an OOM condition or IO error), an appropriate SQLite error code is ** returned. ** ** This function may be quite inefficient if used with an FTS5 table @@ -11988,8 +12964,8 @@ struct Fts5PhraseIter { ** an error code (i.e. SQLITE_NOMEM) if an error occurs. ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. If the FTS5 table is created -** with either "detail=none" or "detail=column" and "content=" option +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option ** (i.e. if it is a contentless table), then this API always returns 0. ** ** xInst: @@ -12000,15 +12976,11 @@ struct Fts5PhraseIter { ** ** Usually, output parameter *piPhrase is set to the phrase number, *piCol ** to the column in which it occurs and *piOff the token offset of the -** first token of the phrase. The exception is if the table was created -** with the offsets=0 option specified. In this case *piOff is always -** set to -1. -** -** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) -** if an error occurs. +** first token of the phrase. Returns SQLITE_OK if successful, or an error +** code (i.e. SQLITE_NOMEM) if an error occurs. ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. +** "detail=none" or "detail=column" option. ** ** xRowid: ** Returns the rowid of the current row. @@ -12024,11 +12996,11 @@ struct Fts5PhraseIter { ** ** with $p set to a phrase equivalent to the phrase iPhrase of the ** current query is executed. Any column filter that applies to -** phrase iPhrase of the current query is included in $p. For each -** row visited, the callback function passed as the fourth argument -** is invoked. The context and API objects passed to the callback +** phrase iPhrase of the current query is included in $p. For each +** row visited, the callback function passed as the fourth argument +** is invoked. The context and API objects passed to the callback ** function may be used to access the properties of each matched row. -** Invoking Api.xUserData() returns a copy of the pointer passed as +** Invoking Api.xUserData() returns a copy of the pointer passed as ** the third argument to pUserData. ** ** If the callback function returns any value other than SQLITE_OK, the @@ -12043,14 +13015,14 @@ struct Fts5PhraseIter { ** ** xSetAuxdata(pFts5, pAux, xDelete) ** -** Save the pointer passed as the second argument as the extension functions +** Save the pointer passed as the second argument as the extension function's ** "auxiliary data". The pointer may then be retrieved by the current or any ** future invocation of the same fts5 extension function made as part of -** of the same MATCH query using the xGetAuxdata() API. +** the same MATCH query using the xGetAuxdata() API. ** ** Each extension function is allocated a single auxiliary data slot for -** each FTS query (MATCH expression). If the extension function is invoked -** more than once for a single FTS query, then all invocations share a +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a ** single auxiliary data context. ** ** If there is already an auxiliary data pointer when this function is @@ -12061,7 +13033,7 @@ struct Fts5PhraseIter { ** The xDelete callback, if one is specified, is also invoked on the ** auxiliary data pointer after the FTS5 query has finished. ** -** If an error (e.g. an OOM condition) occurs within this function, an +** If an error (e.g. an OOM condition) occurs within this function, ** the auxiliary data is set to NULL and an error code returned. If the ** xDelete parameter was not NULL, it is invoked on the auxiliary data ** pointer before returning. @@ -12069,7 +13041,7 @@ struct Fts5PhraseIter { ** ** xGetAuxdata(pFts5, bClear) ** -** Returns the current auxiliary data pointer for the fts5 extension +** Returns the current auxiliary data pointer for the fts5 extension ** function. See the xSetAuxdata() method for details. ** ** If the bClear argument is non-zero, then the auxiliary data is cleared @@ -12089,7 +13061,7 @@ struct Fts5PhraseIter { ** method, to iterate through all instances of a single query phrase within ** the current row. This is the same information as is accessible via the ** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient -** to use, this API may be faster under some circumstances. To iterate +** to use, this API may be faster under some circumstances. To iterate ** through instances of phrase iPhrase, use the following code: ** ** Fts5PhraseIter iter; @@ -12107,8 +13079,8 @@ struct Fts5PhraseIter { ** xPhraseFirstColumn() and xPhraseNextColumn() as illustrated below). ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" or "detail=column" option. If the FTS5 table is created -** with either "detail=none" or "detail=column" and "content=" option +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option ** (i.e. if it is a contentless table), then this API always iterates ** through an empty set (all calls to xPhraseFirst() set iCol to -1). ** @@ -12132,22 +13104,22 @@ struct Fts5PhraseIter { ** } ** ** This API can be quite slow if used with an FTS5 table created with the -** "detail=none" option. If the FTS5 table is created with either -** "detail=none" "content=" option (i.e. if it is a contentless table), -** then this API always iterates through an empty set (all calls to +** "detail=none" option. If the FTS5 table is created with either +** "detail=none" "content=" option (i.e. if it is a contentless table), +** then this API always iterates through an empty set (all calls to ** xPhraseFirstColumn() set iCol to -1). ** ** The information accessed using this API and its companion ** xPhraseFirstColumn() may also be obtained using xPhraseFirst/xPhraseNext ** (or xInst/xInstCount). The chief advantage of this API is that it is ** significantly more efficient than those alternatives when used with -** "detail=column" tables. +** "detail=column" tables. ** ** xPhraseNextColumn() ** See xPhraseFirstColumn above. */ struct Fts5ExtensionApi { - int iVersion; /* Currently always set to 3 */ + int iVersion; /* Currently always set to 2 */ void *(*xUserData)(Fts5Context*); @@ -12155,7 +13127,7 @@ struct Fts5ExtensionApi { int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); - int (*xTokenize)(Fts5Context*, + int (*xTokenize)(Fts5Context*, const char *pText, int nText, /* Text to tokenize */ void *pCtx, /* Context passed to xToken() */ int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ @@ -12184,15 +13156,15 @@ struct Fts5ExtensionApi { void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol); }; -/* +/* ** CUSTOM AUXILIARY FUNCTIONS *************************************************************************/ /************************************************************************* ** CUSTOM TOKENIZERS ** -** Applications may also register custom tokenizer types. A tokenizer -** is registered by providing fts5 with a populated instance of the +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the ** following structure. All structure methods must be defined, setting ** any member of the fts5_tokenizer struct to NULL leads to undefined ** behaviour. The structure methods are expected to function as follows: @@ -12203,16 +13175,16 @@ struct Fts5ExtensionApi { ** ** The first argument passed to this function is a copy of the (void*) ** pointer provided by the application when the fts5_tokenizer object -** was registered with FTS5 (the third argument to xCreateTokenizer()). +** was registered with FTS5 (the third argument to xCreateTokenizer()). ** The second and third arguments are an array of nul-terminated strings ** containing the tokenizer arguments, if any, specified following the ** tokenizer name as part of the CREATE VIRTUAL TABLE statement used ** to create the FTS5 table. ** -** The final argument is an output variable. If successful, (*ppOut) +** The final argument is an output variable. If successful, (*ppOut) ** should be set to point to the new tokenizer handle and SQLITE_OK ** returned. If an error occurs, some value other than SQLITE_OK should -** be returned. In this case, fts5 assumes that the final value of *ppOut +** be returned. In this case, fts5 assumes that the final value of *ppOut ** is undefined. ** ** xDelete: @@ -12221,7 +13193,7 @@ struct Fts5ExtensionApi { ** be invoked exactly once for each successful call to xCreate(). ** ** xTokenize: -** This function is expected to tokenize the nText byte string indicated +** This function is expected to tokenize the nText byte string indicated ** by argument pText. pText may or may not be nul-terminated. The first ** argument passed to this function is a pointer to an Fts5Tokenizer object ** returned by an earlier call to xCreate(). @@ -12235,8 +13207,8 @@ struct Fts5ExtensionApi { ** determine the set of tokens to add to (or delete from) the ** FTS index. ** -**
      4. FTS5_TOKENIZE_QUERY - A MATCH query is being executed -** against the FTS index. The tokenizer is being called to tokenize +**
      5. FTS5_TOKENIZE_QUERY - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize ** a bareword or quoted string specified as part of the query. ** **
      6. (FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX) - Same as @@ -12244,10 +13216,10 @@ struct Fts5ExtensionApi { ** followed by a "*" character, indicating that the last token ** returned by the tokenizer will be treated as a token prefix. ** -**
      7. FTS5_TOKENIZE_AUX - The tokenizer is being invoked to +**
      8. FTS5_TOKENIZE_AUX - The tokenizer is being invoked to ** satisfy an fts5_api.xTokenize() request made by an auxiliary ** function. Or an fts5_api.xColumnSize() request made by the same -** on a columnsize=0 database. +** on a columnsize=0 database. **
    ** ** For each token in the input string, the supplied callback xToken() must @@ -12259,10 +13231,10 @@ struct Fts5ExtensionApi { ** which the token is derived within the input. ** ** The second argument passed to the xToken() callback ("tflags") should -** normally be set to 0. The exception is if the tokenizer supports +** normally be set to 0. The exception is if the tokenizer supports ** synonyms. In this case see the discussion below for details. ** -** FTS5 assumes the xToken() callback is invoked for each token in the +** FTS5 assumes the xToken() callback is invoked for each token in the ** order that they occur within the input text. ** ** If an xToken() callback returns any value other than SQLITE_OK, then @@ -12276,7 +13248,7 @@ struct Fts5ExtensionApi { ** SYNONYM SUPPORT ** ** Custom tokenizers may also support synonyms. Consider a case in which a -** user wishes to query for a phrase such as "first place". Using the +** user wishes to query for a phrase such as "first place". Using the ** built-in tokenizers, the FTS5 query 'first + place' will match instances ** of "first place" within the document set, but not alternative forms ** such as "1st place". In some applications, it would be better to match @@ -12285,8 +13257,8 @@ struct Fts5ExtensionApi { ** ** There are several ways to approach this in FTS5: ** -**
    1. By mapping all synonyms to a single token. In this case, the -** In the above example, this means that the tokenizer returns the +**
      1. By mapping all synonyms to a single token. In this case, using +** the above example, this means that the tokenizer returns the ** same token for inputs "first" and "1st". Say that token is in ** fact "first", so that when the user inserts the document "I won ** 1st place" entries are added to the index for tokens "i", "won", @@ -12294,37 +13266,37 @@ struct Fts5ExtensionApi { ** the tokenizer substitutes "first" for "1st" and the query works ** as expected. ** -**
      2. By adding multiple synonyms for a single term to the FTS index. -** In this case, when tokenizing query text, the tokenizer may -** provide multiple synonyms for a single term within the document. -** FTS5 then queries the index for each synonym individually. For -** example, faced with the query: +**
      3. By querying the index for all synonyms of each query term +** separately. In this case, when tokenizing query text, the +** tokenizer may provide multiple synonyms for a single term +** within the document. FTS5 then queries the index for each +** synonym individually. For example, faced with the query: ** ** ** ... MATCH 'first place' ** ** the tokenizer offers both "1st" and "first" as synonyms for the -** first token in the MATCH query and FTS5 effectively runs a query +** first token in the MATCH query and FTS5 effectively runs a query ** similar to: ** ** ** ... MATCH '(first OR 1st) place' ** ** except that, for the purposes of auxiliary functions, the query -** still appears to contain just two phrases - "(first OR 1st)" +** still appears to contain just two phrases - "(first OR 1st)" ** being treated as a single phrase. ** **
      4. By adding multiple synonyms for a single term to the FTS index. ** Using this method, when tokenizing document text, the tokenizer -** provides multiple synonyms for each token. So that when a +** provides multiple synonyms for each token. So that when a ** document such as "I won first place" is tokenized, entries are ** added to the FTS index for "i", "won", "first", "1st" and ** "place". ** ** This way, even if the tokenizer does not provide synonyms -** when tokenizing query text (it should not - to do would be -** inefficient), it doesn't matter if the user queries for -** 'first + place' or '1st + place', as there are entires in the +** when tokenizing query text (it should not - to do so would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entries in the ** FTS index corresponding to both forms of the first token. **
      ** @@ -12344,15 +13316,15 @@ struct Fts5ExtensionApi { ** ** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time ** xToken() is called. Multiple synonyms may be specified for a single token -** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. ** There is no limit to the number of synonyms that may be provided for a ** single token. ** -** In many cases, method (1) above is the best approach. It does not add +** In many cases, method (1) above is the best approach. It does not add ** extra data to the FTS index or require FTS5 to query for multiple terms, ** so it is efficient in terms of disk space and query speed. However, it ** does not support prefix queries very well. If, as suggested above, the -** token "first" is subsituted for "1st" by the tokenizer, then the query: +** token "first" is substituted for "1st" by the tokenizer, then the query: ** ** ** ... MATCH '1s*' @@ -12360,24 +13332,24 @@ struct Fts5ExtensionApi { ** will not match documents that contain the token "1st" (as the tokenizer ** will probably not map "1s" to any prefix of "first"). ** -** For full prefix support, method (3) may be preferred. In this case, +** For full prefix support, method (3) may be preferred. In this case, ** because the index contains entries for both "first" and "1st", prefix ** queries such as 'fi*' or '1s*' will match correctly. However, because ** extra entries are added to the FTS index, this method uses more space ** within the database. ** ** Method (2) offers a midpoint between (1) and (3). Using this method, -** a query such as '1s*' will match documents that contain the literal +** a query such as '1s*' will match documents that contain the literal ** token "1st", but not "first" (assuming the tokenizer is not able to ** provide synonyms for prefixes). However, a non-prefix query like '1st' ** will match against "1st" and "first". This method does not require -** extra disk space, as no extra entries are added to the FTS index. +** extra disk space, as no extra entries are added to the FTS index. ** On the other hand, it may require more CPU cycles to run MATCH queries, ** as separate queries of the FTS index are required for each synonym. ** ** When using methods (2) or (3), it is important that the tokenizer only -** provide synonyms when tokenizing document text (method (2)) or query -** text (method (3)), not both. Doing so will not cause any errors, but is +** provide synonyms when tokenizing document text (method (3)) or query +** text (method (2)), not both. Doing so will not cause any errors, but is ** inefficient. */ typedef struct Fts5Tokenizer Fts5Tokenizer; @@ -12385,10 +13357,10 @@ typedef struct fts5_tokenizer fts5_tokenizer; struct fts5_tokenizer { int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); void (*xDelete)(Fts5Tokenizer*); - int (*xTokenize)(Fts5Tokenizer*, + int (*xTokenize)(Fts5Tokenizer*, void *pCtx, int flags, /* Mask of FTS5_TOKENIZE_* flags */ - const char *pText, int nText, + const char *pText, int nText, int (*xToken)( void *pCtx, /* Copy of 2nd argument to xTokenize() */ int tflags, /* Mask of FTS5_TOKEN_* flags */ @@ -12425,7 +13397,7 @@ struct fts5_api { int (*xCreateTokenizer)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_tokenizer *pTokenizer, void (*xDestroy)(void*) ); @@ -12434,7 +13406,7 @@ struct fts5_api { int (*xFindTokenizer)( fts5_api *pApi, const char *zName, - void **ppContext, + void **ppUserData, fts5_tokenizer *pTokenizer ); @@ -12442,7 +13414,7 @@ struct fts5_api { int (*xCreateFunction)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_extension_function xFunction, void (*xDestroy)(void*) ); @@ -12463,12 +13435,17 @@ struct fts5_api { /************** End of sqlite3.h *********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ +/* +** Reuse the STATIC_LRU for mutex access to sqlite3_temp_directory. +*/ +#define SQLITE_MUTEX_STATIC_TEMPDIR SQLITE_MUTEX_STATIC_VFS1 + /* ** Include the configuration header output by 'configure' if we're using the ** autoconf-based build */ #if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H) -/* #include "config.h" */ +#include "sqlite_cfg.h" #define SQLITECONFIG_H 1 #endif @@ -12485,7 +13462,7 @@ struct fts5_api { ** May you share freely, never taking more than you give. ** ************************************************************************* -** +** ** This file defines various limits of what SQLite can process. */ @@ -12533,14 +13510,10 @@ struct fts5_api { #endif /* -** The maximum depth of an expression tree. This is limited to -** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might -** want to place more severe limits on the complexity of an -** expression. -** -** A value of 0 used to mean that the limit was not enforced. -** But that is no longer true. The limit is now strictly enforced -** at all times. +** The maximum depth of an expression tree. This is limited to +** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might +** want to place more severe limits on the complexity of an +** expression. A value of 0 means that there is no limit. */ #ifndef SQLITE_MAX_EXPR_DEPTH # define SQLITE_MAX_EXPR_DEPTH 1000 @@ -12552,7 +13525,7 @@ struct fts5_api { ** level of recursion for each term. A stack overflow can result ** if the number of terms is too large. In practice, most SQL ** never has more than 3 or 4 terms. Use a value of 0 to disable -** any limit on the number of terms in a compount SELECT. +** any limit on the number of terms in a compound SELECT. */ #ifndef SQLITE_MAX_COMPOUND_SELECT # define SQLITE_MAX_COMPOUND_SELECT 500 @@ -12607,9 +13580,12 @@ struct fts5_api { /* ** The maximum value of a ?nnn wildcard that the parser will accept. +** If the value exceeds 32767 then extra space is required for the Expr +** structure. But otherwise, we believe that the number can be as large +** as a signed 32-bit integer can hold. */ #ifndef SQLITE_MAX_VARIABLE_NUMBER -# define SQLITE_MAX_VARIABLE_NUMBER 999 +# define SQLITE_MAX_VARIABLE_NUMBER 32766 #endif /* Maximum page size. The upper bound on this value is 65536. This a limit @@ -12617,10 +13593,10 @@ struct fts5_api { ** ** Earlier versions of SQLite allowed the user to change this value at ** compile time. This is no longer permitted, on the grounds that it creates -** a library that is technically incompatible with an SQLite library -** compiled with a different limit. If a process operating on a database -** with a page-size of 65536 bytes crashes, then an instance of SQLite -** compiled with the default page-size limit will not be able to rollback +** a library that is technically incompatible with an SQLite library +** compiled with a different limit. If a process operating on a database +** with a page-size of 65536 bytes crashes, then an instance of SQLite +** compiled with the default page-size limit will not be able to rollback ** the aborted transaction. This could lead to database corruption. */ #ifdef SQLITE_MAX_PAGE_SIZE @@ -12679,7 +13655,7 @@ struct fts5_api { ** Maximum depth of recursion for triggers. ** ** A value of 1 means that a trigger program will not be able to itself -** fire any triggers. A value of 0 means that no trigger programs at all +** fire any triggers. A value of 0 means that no trigger programs at all ** may be executed. */ #ifndef SQLITE_MAX_TRIGGER_DEPTH @@ -12698,6 +13674,23 @@ struct fts5_api { #pragma warn -spa /* Suspicious pointer arithmetic */ #endif +/* +** A few places in the code require atomic load/store of aligned +** integer values. +*/ +#ifndef __has_extension +# define __has_extension(x) 0 /* compatibility with non-clang compilers */ +#endif +#if GCC_VERSION>=4007000 || __has_extension(c_atomic) +# define SQLITE_ATOMIC_INTRINSICS 1 +# define AtomicLoad(PTR) __atomic_load_n((PTR),__ATOMIC_RELAXED) +# define AtomicStore(PTR,VAL) __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED) +#else +# define SQLITE_ATOMIC_INTRINSICS 0 +# define AtomicLoad(PTR) (*(PTR)) +# define AtomicStore(PTR,VAL) (*(PTR) = (VAL)) +#endif + /* ** Include standard header files as necessary */ @@ -12724,30 +13717,37 @@ struct fts5_api { ** So we have to define the macros in different ways depending on the ** compiler. */ -#if defined(__PTRDIFF_TYPE__) /* This case should work for GCC */ +#if defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */ +# define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X)) +# define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X)) +#elif defined(__PTRDIFF_TYPE__) /* This case should work for GCC */ # define SQLITE_INT_TO_PTR(X) ((void*)(__PTRDIFF_TYPE__)(X)) # define SQLITE_PTR_TO_INT(X) ((int)(__PTRDIFF_TYPE__)(X)) #elif !defined(__GNUC__) /* Works for compilers other than LLVM */ # define SQLITE_INT_TO_PTR(X) ((void*)&((char*)0)[X]) # define SQLITE_PTR_TO_INT(X) ((int)(((char*)X)-(char*)0)) -#elif defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */ -# define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X)) #else /* Generates a warning - but it always works */ # define SQLITE_INT_TO_PTR(X) ((void*)(X)) # define SQLITE_PTR_TO_INT(X) ((int)(X)) #endif /* -** A macro to hint to the compiler that a function should not be +** Macros to hint to the compiler that a function should or should not be ** inlined. */ #if defined(__GNUC__) # define SQLITE_NOINLINE __attribute__((noinline)) +# define SQLITE_INLINE __attribute__((always_inline)) inline #elif defined(_MSC_VER) && _MSC_VER>=1310 # define SQLITE_NOINLINE __declspec(noinline) +# define SQLITE_INLINE __forceinline #else # define SQLITE_NOINLINE +# define SQLITE_INLINE +#endif +#if defined(SQLITE_COVERAGE_TEST) || defined(__STRICT_ANSI__) +# undef SQLITE_INLINE +# define SQLITE_INLINE #endif /* @@ -12898,11 +13898,12 @@ struct fts5_api { ** is significant and used at least once. On switch statements ** where multiple cases go to the same block of code, testcase() ** can insure that all cases are evaluated. -** */ -#ifdef SQLITE_COVERAGE_TEST -SQLITE_PRIVATE void sqlite3Coverage(int); -# define testcase(X) if( X ){ sqlite3Coverage(__LINE__); } +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG) +# ifndef SQLITE_AMALGAMATION + extern unsigned int sqlite3CoverageCounter; +# endif +# define testcase(X) if( X ){ sqlite3CoverageCounter += (unsigned)__LINE__; } #else # define testcase(X) #endif @@ -12932,6 +13933,14 @@ SQLITE_PRIVATE void sqlite3Coverage(int); # define VVA_ONLY(X) #endif +/* +** Disable ALWAYS() and NEVER() (make them pass-throughs) for coverage +** and mutation testing +*/ +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) +# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1 +#endif + /* ** The ALWAYS and NEVER macros surround boolean expressions which ** are intended to always be true or false, respectively. Such @@ -12947,7 +13956,7 @@ SQLITE_PRIVATE void sqlite3Coverage(int); ** be true and false so that the unreachable code they specify will ** not be counted as untested code. */ -#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) +#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS) # define ALWAYS(X) (1) # define NEVER(X) (0) #elif !defined(NDEBUG) @@ -13021,6 +14030,13 @@ SQLITE_PRIVATE void sqlite3Coverage(int); # undef SQLITE_ENABLE_EXPLAIN_COMMENTS #endif +/* +** SQLITE_OMIT_VIRTUALTABLE implies SQLITE_OMIT_ALTERTABLE +*/ +#if defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_ALTERTABLE) +# define SQLITE_OMIT_ALTERTABLE +#endif + /* ** Return true (non-zero) if the input is an integer that is too large ** to fit in 32-bits. This macro is used inside of various testcase() @@ -13077,7 +14093,7 @@ typedef struct HashElem HashElem; ** element pointed to plus the next _ht.count-1 elements in the list. ** ** Hash.htsize and Hash.ht may be zero. In that case lookup is done -** by a linear search of the global list. For small tables, the +** by a linear search of the global list. For small tables, the ** Hash.ht table is never allocated because if there are few elements ** in the table, it is faster to do a linear search than to manage ** the hash table. @@ -13087,12 +14103,12 @@ struct Hash { unsigned int count; /* Number of entries in this table */ HashElem *first; /* The first element of the array */ struct _ht { /* the hash table */ - int count; /* Number of entries with this hash */ + unsigned int count; /* Number of entries with this hash */ HashElem *chain; /* Pointer to first entry with this hash */ } *ht; }; -/* Each element in the hash table is an instance of the following +/* Each element in the hash table is an instance of the following ** structure. All elements are stored on a single doubly-linked list. ** ** Again, this structure is intended to be opaque, but it can't really @@ -13133,7 +14149,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); /* ** Number of entries in a hash table */ -/* #define sqliteHashCount(H) ((H)->count) // NOT USED */ +#define sqliteHashCount(H) ((H)->count) #endif /* SQLITE_HASH_H */ @@ -13165,8 +14181,8 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #define TK_LP 22 #define TK_RP 23 #define TK_AS 24 -#define TK_WITHOUT 25 -#define TK_COMMA 26 +#define TK_COMMA 25 +#define TK_WITHOUT 26 #define TK_ABORT 27 #define TK_ACTION 28 #define TK_AFTER 29 @@ -13216,101 +14232,115 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #define TK_REPLACE 73 #define TK_RESTRICT 74 #define TK_ROW 75 -#define TK_TRIGGER 76 -#define TK_VACUUM 77 -#define TK_VIEW 78 -#define TK_VIRTUAL 79 -#define TK_WITH 80 -#define TK_REINDEX 81 -#define TK_RENAME 82 -#define TK_CTIME_KW 83 -#define TK_ANY 84 -#define TK_BITAND 85 -#define TK_BITOR 86 -#define TK_LSHIFT 87 -#define TK_RSHIFT 88 -#define TK_PLUS 89 -#define TK_MINUS 90 -#define TK_STAR 91 -#define TK_SLASH 92 -#define TK_REM 93 -#define TK_CONCAT 94 -#define TK_COLLATE 95 -#define TK_BITNOT 96 -#define TK_ON 97 -#define TK_INDEXED 98 -#define TK_STRING 99 -#define TK_JOIN_KW 100 -#define TK_CONSTRAINT 101 -#define TK_DEFAULT 102 -#define TK_NULL 103 -#define TK_PRIMARY 104 -#define TK_UNIQUE 105 -#define TK_CHECK 106 -#define TK_REFERENCES 107 -#define TK_AUTOINCR 108 -#define TK_INSERT 109 -#define TK_DELETE 110 -#define TK_UPDATE 111 -#define TK_SET 112 -#define TK_DEFERRABLE 113 -#define TK_FOREIGN 114 -#define TK_DROP 115 -#define TK_UNION 116 -#define TK_ALL 117 -#define TK_EXCEPT 118 -#define TK_INTERSECT 119 -#define TK_SELECT 120 -#define TK_VALUES 121 -#define TK_DISTINCT 122 -#define TK_DOT 123 -#define TK_FROM 124 -#define TK_JOIN 125 -#define TK_USING 126 -#define TK_ORDER 127 -#define TK_GROUP 128 -#define TK_HAVING 129 -#define TK_LIMIT 130 -#define TK_WHERE 131 -#define TK_INTO 132 -#define TK_NOTHING 133 -#define TK_FLOAT 134 -#define TK_BLOB 135 -#define TK_INTEGER 136 -#define TK_VARIABLE 137 -#define TK_CASE 138 -#define TK_WHEN 139 -#define TK_THEN 140 -#define TK_ELSE 141 -#define TK_INDEX 142 -#define TK_ALTER 143 -#define TK_ADD 144 -#define TK_TRUEFALSE 145 -#define TK_ISNOT 146 -#define TK_FUNCTION 147 -#define TK_COLUMN 148 -#define TK_AGG_FUNCTION 149 -#define TK_AGG_COLUMN 150 -#define TK_UMINUS 151 -#define TK_UPLUS 152 -#define TK_TRUTH 153 -#define TK_REGISTER 154 -#define TK_VECTOR 155 -#define TK_SELECT_COLUMN 156 -#define TK_IF_NULL_ROW 157 -#define TK_ASTERISK 158 -#define TK_SPAN 159 -#define TK_END_OF_FILE 160 -#define TK_UNCLOSED_STRING 161 -#define TK_SPACE 162 -#define TK_ILLEGAL 163 - -/* The token codes above must all fit in 8 bits */ -#define TKFLG_MASK 0xff - -/* Flags that can be added to a token code when it is not -** being stored in a u8: */ -#define TKFLG_DONTFOLD 0x100 /* Omit constant folding optimizations */ +#define TK_ROWS 76 +#define TK_TRIGGER 77 +#define TK_VACUUM 78 +#define TK_VIEW 79 +#define TK_VIRTUAL 80 +#define TK_WITH 81 +#define TK_NULLS 82 +#define TK_FIRST 83 +#define TK_LAST 84 +#define TK_CURRENT 85 +#define TK_FOLLOWING 86 +#define TK_PARTITION 87 +#define TK_PRECEDING 88 +#define TK_RANGE 89 +#define TK_UNBOUNDED 90 +#define TK_EXCLUDE 91 +#define TK_GROUPS 92 +#define TK_OTHERS 93 +#define TK_TIES 94 +#define TK_GENERATED 95 +#define TK_ALWAYS 96 +#define TK_MATERIALIZED 97 +#define TK_REINDEX 98 +#define TK_RENAME 99 +#define TK_CTIME_KW 100 +#define TK_ANY 101 +#define TK_BITAND 102 +#define TK_BITOR 103 +#define TK_LSHIFT 104 +#define TK_RSHIFT 105 +#define TK_PLUS 106 +#define TK_MINUS 107 +#define TK_STAR 108 +#define TK_SLASH 109 +#define TK_REM 110 +#define TK_CONCAT 111 +#define TK_PTR 112 +#define TK_COLLATE 113 +#define TK_BITNOT 114 +#define TK_ON 115 +#define TK_INDEXED 116 +#define TK_STRING 117 +#define TK_JOIN_KW 118 +#define TK_CONSTRAINT 119 +#define TK_DEFAULT 120 +#define TK_NULL 121 +#define TK_PRIMARY 122 +#define TK_UNIQUE 123 +#define TK_CHECK 124 +#define TK_REFERENCES 125 +#define TK_AUTOINCR 126 +#define TK_INSERT 127 +#define TK_DELETE 128 +#define TK_UPDATE 129 +#define TK_SET 130 +#define TK_DEFERRABLE 131 +#define TK_FOREIGN 132 +#define TK_DROP 133 +#define TK_UNION 134 +#define TK_ALL 135 +#define TK_EXCEPT 136 +#define TK_INTERSECT 137 +#define TK_SELECT 138 +#define TK_VALUES 139 +#define TK_DISTINCT 140 +#define TK_DOT 141 +#define TK_FROM 142 +#define TK_JOIN 143 +#define TK_USING 144 +#define TK_ORDER 145 +#define TK_GROUP 146 +#define TK_HAVING 147 +#define TK_LIMIT 148 +#define TK_WHERE 149 +#define TK_RETURNING 150 +#define TK_INTO 151 +#define TK_NOTHING 152 +#define TK_FLOAT 153 +#define TK_BLOB 154 +#define TK_INTEGER 155 +#define TK_VARIABLE 156 +#define TK_CASE 157 +#define TK_WHEN 158 +#define TK_THEN 159 +#define TK_ELSE 160 +#define TK_INDEX 161 +#define TK_ALTER 162 +#define TK_ADD 163 +#define TK_WINDOW 164 +#define TK_OVER 165 +#define TK_FILTER 166 +#define TK_COLUMN 167 +#define TK_AGG_FUNCTION 168 +#define TK_AGG_COLUMN 169 +#define TK_TRUEFALSE 170 +#define TK_ISNOT 171 +#define TK_FUNCTION 172 +#define TK_UMINUS 173 +#define TK_UPLUS 174 +#define TK_TRUTH 175 +#define TK_REGISTER 176 +#define TK_VECTOR 177 +#define TK_SELECT_COLUMN 178 +#define TK_IF_NULL_ROW 179 +#define TK_ASTERISK 180 +#define TK_SPAN 181 +#define TK_ERROR 182 +#define TK_SPACE 183 +#define TK_ILLEGAL 184 /************** End of parse.h ***********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ @@ -13416,7 +14446,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); ** number of pages. A negative number N translations means that a buffer ** of -1024*N bytes is allocated and used for as many pages as it will hold. ** -** The default value of "20" was choosen to minimize the run-time of the +** The default value of "20" was chosen to minimize the run-time of the ** speedtest1 test program with options: --shrink-memory --reprepare */ #ifndef SQLITE_DEFAULT_PCACHE_INITSZ @@ -13431,7 +14461,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #endif /* -** The compile-time options SQLITE_MMAP_READWRITE and +** The compile-time options SQLITE_MMAP_READWRITE and ** SQLITE_ENABLE_BATCH_ATOMIC_WRITE are not compatible with one another. ** You must choose one or the other (or neither) but not both. */ @@ -13535,15 +14565,9 @@ typedef INT8_TYPE i8; /* 1-byte signed integer */ /* ** The datatype used to store estimates of the number of rows in a -** table or index. This is an unsigned integer type. For 99.9% of -** the world, a 32-bit integer is sufficient. But a 64-bit integer -** can be used at compile-time if desired. +** table or index. */ -#ifdef SQLITE_64BIT_STATS - typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */ -#else - typedef u32 tRowcnt; /* 32-bit is the default */ -#endif +typedef u64 tRowcnt; /* ** Estimated quantities used for query planning are stored as 16-bit @@ -13577,7 +14601,9 @@ typedef INT16_TYPE LogEst; # if defined(__SIZEOF_POINTER__) # define SQLITE_PTRSIZE __SIZEOF_POINTER__ # elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(_M_ARM) || defined(__arm__) || defined(__x86) + defined(_M_ARM) || defined(__arm__) || defined(__x86) || \ + (defined(__APPLE__) && defined(__POWERPC__)) || \ + (defined(__TOS_AIX__) && !defined(__64BIT__)) # define SQLITE_PTRSIZE 4 # else # define SQLITE_PTRSIZE 8 @@ -13602,8 +14628,31 @@ typedef INT16_TYPE LogEst; ** the end of buffer S. This macro returns true if P points to something ** contained within the buffer S. */ -#define SQLITE_WITHIN(P,S,E) (((uptr)(P)>=(uptr)(S))&&((uptr)(P)<(uptr)(E))) +#define SQLITE_WITHIN(P,S,E) (((uptr)(P)>=(uptr)(S))&&((uptr)(P)<(uptr)(E))) +/* +** P is one byte past the end of a large buffer. Return true if a span of bytes +** between S..E crosses the end of that buffer. In other words, return true +** if the sub-buffer S..E-1 overflows the buffer whose last byte is P-1. +** +** S is the start of the span. E is one byte past the end of end of span. +** +** P +** |-----------------| FALSE +** |-------| +** S E +** +** P +** |-----------------| +** |-------| TRUE +** S E +** +** P +** |-----------------| +** |-------| FALSE +** S E +*/ +#define SQLITE_OVERFLOW(P,S,E) (((uptr)(S)<(uptr)(P))&&((uptr)(E)>(uptr)(P))) /* ** Macros to determine whether the machine is big or little endian, @@ -13615,12 +14664,13 @@ typedef INT16_TYPE LogEst; ** at run-time. */ #ifndef SQLITE_BYTEORDER -# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ - defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ - defined(__arm__) +# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ + defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ + defined(__ARMEL__) || defined(__AARCH64EL__) || defined(_M_ARM64) # define SQLITE_BYTEORDER 1234 -# elif defined(sparc) || defined(__ppc__) +# elif defined(sparc) || defined(__ppc__) || \ + defined(__ARMEB__) || defined(__AARCH64EB__) # define SQLITE_BYTEORDER 4321 # else # define SQLITE_BYTEORDER 0 @@ -13651,13 +14701,25 @@ typedef INT16_TYPE LogEst; ** compilers. */ #define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) +#define LARGEST_UINT64 (0xffffffff|(((u64)0xffffffff)<<32)) #define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) /* ** Round up a number to the next larger multiple of 8. This is used ** to force 8-byte alignment on 64-bit architectures. +** +** ROUND8() always does the rounding, for any argument. +** +** ROUND8P() assumes that the argument is already an integer number of +** pointers in size, and so it is a no-op on systems where the pointer +** size is 8. */ #define ROUND8(x) (((x)+7)&~7) +#if SQLITE_PTRSIZE==8 +# define ROUND8P(x) (x) +#else +# define ROUND8P(x) (((x)+7)&~7) +#endif /* ** Round down to the nearest multiple of 8 @@ -13674,9 +14736,9 @@ typedef INT16_TYPE LogEst; ** pointers. In that case, only verify 4-byte alignment. */ #ifdef SQLITE_4_BYTE_ALIGNED_MALLOC -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&3)==0) +# define EIGHT_BYTE_ALIGNMENT(X) ((((uptr)(X) - (uptr)0)&3)==0) #else -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&7)==0) +# define EIGHT_BYTE_ALIGNMENT(X) ((((uptr)(X) - (uptr)0)&7)==0) #endif /* @@ -13720,28 +14782,90 @@ typedef INT16_TYPE LogEst; #endif /* -** Only one of SQLITE_ENABLE_STAT3 or SQLITE_ENABLE_STAT4 can be defined. -** Priority is given to SQLITE_ENABLE_STAT4. If either are defined, also -** define SQLITE_ENABLE_STAT3_OR_STAT4 +** TREETRACE_ENABLED will be either 1 or 0 depending on whether or not +** the Abstract Syntax Tree tracing logic is turned on. */ -#ifdef SQLITE_ENABLE_STAT4 -# undef SQLITE_ENABLE_STAT3 -# define SQLITE_ENABLE_STAT3_OR_STAT4 1 -#elif SQLITE_ENABLE_STAT3 -# define SQLITE_ENABLE_STAT3_OR_STAT4 1 -#elif SQLITE_ENABLE_STAT3_OR_STAT4 -# undef SQLITE_ENABLE_STAT3_OR_STAT4 +#if !defined(SQLITE_AMALGAMATION) +SQLITE_PRIVATE u32 sqlite3TreeTrace; +#endif +#if defined(SQLITE_DEBUG) \ + && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_SELECTTRACE) \ + || defined(SQLITE_ENABLE_TREETRACE)) +# define TREETRACE_ENABLED 1 +# define TREETRACE(K,P,S,X) \ + if(sqlite3TreeTrace&(K)) \ + sqlite3DebugPrintf("%u/%d/%p: ",(S)->selId,(P)->addrExplain,(S)),\ + sqlite3DebugPrintf X +#else +# define TREETRACE(K,P,S,X) +# define TREETRACE_ENABLED 0 +#endif + +/* TREETRACE flag meanings: +** +** 0x00000001 Beginning and end of SELECT processing +** 0x00000002 WHERE clause processing +** 0x00000004 Query flattener +** 0x00000008 Result-set wildcard expansion +** 0x00000010 Query name resolution +** 0x00000020 Aggregate analysis +** 0x00000040 Window functions +** 0x00000080 Generated column names +** 0x00000100 Move HAVING terms into WHERE +** 0x00000200 Count-of-view optimization +** 0x00000400 Compound SELECT processing +** 0x00000800 Drop superfluous ORDER BY +** 0x00001000 LEFT JOIN simplifies to JOIN +** 0x00002000 Constant propagation +** 0x00004000 Push-down optimization +** 0x00008000 After all FROM-clause analysis +** 0x00010000 Beginning of DELETE/INSERT/UPDATE processing +** 0x00020000 Transform DISTINCT into GROUP BY +** 0x00040000 SELECT tree dump after all code has been generated +*/ + +/* +** Macros for "wheretrace" +*/ +SQLITE_PRIVATE u32 sqlite3WhereTrace; +#if defined(SQLITE_DEBUG) \ + && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_WHERETRACE)) +# define WHERETRACE(K,X) if(sqlite3WhereTrace&(K)) sqlite3DebugPrintf X +# define WHERETRACE_ENABLED 1 +#else +# define WHERETRACE(K,X) #endif /* -** SELECTTRACE_ENABLED will be either 1 or 0 depending on whether or not -** the Select query generator tracing logic is turned on. +** Bits for the sqlite3WhereTrace mask: +** +** (---any--) Top-level block structure +** 0x-------F High-level debug messages +** 0x----FFF- More detail +** 0xFFFF---- Low-level debug messages +** +** 0x00000001 Code generation +** 0x00000002 Solver +** 0x00000004 Solver costs +** 0x00000008 WhereLoop inserts +** +** 0x00000010 Display sqlite3_index_info xBestIndex calls +** 0x00000020 Range an equality scan metrics +** 0x00000040 IN operator decisions +** 0x00000080 WhereLoop cost adjustements +** 0x00000100 +** 0x00000200 Covering index decisions +** 0x00000400 OR optimization +** 0x00000800 Index scanner +** 0x00001000 More details associated with code generation +** 0x00002000 +** 0x00004000 Show all WHERE terms at key points +** 0x00008000 Show the full SELECT statement at key places +** +** 0x00010000 Show more detail when printing WHERE terms +** 0x00020000 Show WHERE terms returned from whereScanNext() */ -#if defined(SQLITE_ENABLE_SELECTTRACE) -# define SELECTTRACE_ENABLED 1 -#else -# define SELECTTRACE_ENABLED 0 -#endif + /* ** An instance of the following structure is used to store the busy-handler @@ -13757,26 +14881,41 @@ struct BusyHandler { int (*xBusyHandler)(void *,int); /* The busy callback */ void *pBusyArg; /* First arg to busy callback */ int nBusy; /* Incremented with each busy call */ - u8 bExtraFileArg; /* Include sqlite3_file as callback arg */ }; /* -** Name of the master database table. The master database table -** is a special table that holds the names and attributes of all -** user tables and indices. +** Name of table that holds the database schema. +** +** The PREFERRED names are used wherever possible. But LEGACY is also +** used for backwards compatibility. +** +** 1. Queries can use either the PREFERRED or the LEGACY names +** 2. The sqlite3_set_authorizer() callback uses the LEGACY name +** 3. The PRAGMA table_list statement uses the PREFERRED name +** +** The LEGACY names are stored in the internal symbol hash table +** in support of (2). Names are translated using sqlite3PreferredTableName() +** for (3). The sqlite3FindTable() function takes care of translating +** names for (1). +** +** Note that "sqlite_temp_schema" can also be called "temp.sqlite_schema". */ -#define MASTER_NAME "sqlite_master" -#define TEMP_MASTER_NAME "sqlite_temp_master" +#define LEGACY_SCHEMA_TABLE "sqlite_master" +#define LEGACY_TEMP_SCHEMA_TABLE "sqlite_temp_master" +#define PREFERRED_SCHEMA_TABLE "sqlite_schema" +#define PREFERRED_TEMP_SCHEMA_TABLE "sqlite_temp_schema" + /* -** The root-page of the master database table. +** The root-page of the schema table. */ -#define MASTER_ROOT 1 +#define SCHEMA_ROOT 1 /* -** The name of the schema table. +** The name of the schema table. The name is different for TEMP. */ -#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME) +#define SCHEMA_TABLE(x) \ + ((!OMIT_TEMPDB)&&(x==1)?LEGACY_TEMP_SCHEMA_TABLE:LEGACY_SCHEMA_TABLE) /* ** A convenience macro that returns the number of elements in @@ -13797,7 +14936,7 @@ struct BusyHandler { ** pointer will work here as long as it is distinct from SQLITE_STATIC ** and SQLITE_TRANSIENT. */ -#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3MallocSize) +#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3OomClear) /* ** When SQLITE_OMIT_WSD is defined, it means that the target platform does @@ -13853,16 +14992,21 @@ typedef struct AutoincInfo AutoincInfo; typedef struct Bitvec Bitvec; typedef struct CollSeq CollSeq; typedef struct Column Column; +typedef struct Cte Cte; +typedef struct CteUse CteUse; typedef struct Db Db; +typedef struct DbFixer DbFixer; typedef struct Schema Schema; typedef struct Expr Expr; typedef struct ExprList ExprList; typedef struct FKey FKey; +typedef struct FpDecode FpDecode; typedef struct FuncDestructor FuncDestructor; typedef struct FuncDef FuncDef; typedef struct FuncDefHash FuncDefHash; typedef struct IdList IdList; typedef struct Index Index; +typedef struct IndexedExpr IndexedExpr; typedef struct IndexSample IndexSample; typedef struct KeyClass KeyClass; typedef struct KeyInfo KeyInfo; @@ -13870,14 +15014,20 @@ typedef struct Lookaside Lookaside; typedef struct LookasideSlot LookasideSlot; typedef struct Module Module; typedef struct NameContext NameContext; +typedef struct OnOrUsing OnOrUsing; typedef struct Parse Parse; +typedef struct ParseCleanup ParseCleanup; typedef struct PreUpdate PreUpdate; typedef struct PrintfArguments PrintfArguments; +typedef struct RCStr RCStr; +typedef struct RenameToken RenameToken; +typedef struct Returning Returning; typedef struct RowSet RowSet; typedef struct Savepoint Savepoint; typedef struct Select Select; typedef struct SQLiteThread SQLiteThread; typedef struct SelectDest SelectDest; +typedef struct SrcItem SrcItem; typedef struct SrcList SrcList; typedef struct sqlite3_str StrAccum; /* Internal alias for sqlite3_str */ typedef struct Table Table; @@ -13893,8 +15043,38 @@ typedef struct VTable VTable; typedef struct VtabCtx VtabCtx; typedef struct Walker Walker; typedef struct WhereInfo WhereInfo; +typedef struct Window Window; typedef struct With With; + +/* +** The bitmask datatype defined below is used for various optimizations. +** +** Changing this from a 64-bit to a 32-bit type limits the number of +** tables in a join to 32 instead of 64. But it also reduces the size +** of the library by 738 bytes on ix86. +*/ +#ifdef SQLITE_BITMASK_TYPE + typedef SQLITE_BITMASK_TYPE Bitmask; +#else + typedef u64 Bitmask; +#endif + +/* +** The number of bits in a Bitmask. "BMS" means "BitMask Size". +*/ +#define BMS ((int)(sizeof(Bitmask)*8)) + +/* +** A bit in a Bitmask +*/ +#define MASKBIT(n) (((Bitmask)1)<<(n)) +#define MASKBIT64(n) (((u64)1)<<(n)) +#define MASKBIT32(n) (((unsigned int)1)<<(n)) +#define SMASKBIT32(n) ((n)<=31?((unsigned int)1)<<(n):0) +#define ALLBITS ((Bitmask)-1) +#define TOPBIT (((Bitmask)1)<<(BMS-1)) + /* A VList object records a mapping between parameters/variables/wildcards ** in the SQL statement (such as $abc, @pqr, or :xyz) and the integer ** variable number associated with that parameter. See the format description @@ -13908,6 +15088,583 @@ typedef int VList; ** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque ** pointer types (i.e. FuncDef) defined above. */ +/************** Include os.h in the middle of sqliteInt.h ********************/ +/************** Begin file os.h **********************************************/ +/* +** 2001 September 16 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This header file (together with is companion C source-code file +** "os.c") attempt to abstract the underlying operating system so that +** the SQLite library will work on both POSIX and windows systems. +** +** This header file is #include-ed by sqliteInt.h and thus ends up +** being included by every source file. +*/ +#ifndef _SQLITE_OS_H_ +#define _SQLITE_OS_H_ + +/* +** Attempt to automatically detect the operating system and setup the +** necessary pre-processor macros for it. +*/ +/************** Include os_setup.h in the middle of os.h *********************/ +/************** Begin file os_setup.h ****************************************/ +/* +** 2013 November 25 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains pre-processor directives related to operating system +** detection and/or setup. +*/ +#ifndef SQLITE_OS_SETUP_H +#define SQLITE_OS_SETUP_H + +/* +** Figure out if we are dealing with Unix, Windows, or some other operating +** system. +** +** After the following block of preprocess macros, all of +** +** SQLITE_OS_KV +** SQLITE_OS_OTHER +** SQLITE_OS_UNIX +** SQLITE_OS_WIN +** +** will defined to either 1 or 0. One of them will be 1. The others will be 0. +** If none of the macros are initially defined, then select either +** SQLITE_OS_UNIX or SQLITE_OS_WIN depending on the target platform. +** +** If SQLITE_OS_OTHER=1 is specified at compile-time, then the application +** must provide its own VFS implementation together with sqlite3_os_init() +** and sqlite3_os_end() routines. +*/ +#if !defined(SQLITE_OS_KV) && !defined(SQLITE_OS_OTHER) && \ + !defined(SQLITE_OS_UNIX) && !defined(SQLITE_OS_WIN) +# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || \ + defined(__MINGW32__) || defined(__BORLANDC__) +# define SQLITE_OS_WIN 1 +# define SQLITE_OS_UNIX 0 +# else +# define SQLITE_OS_WIN 0 +# define SQLITE_OS_UNIX 1 +# endif +#endif +#if SQLITE_OS_OTHER+1>1 +# undef SQLITE_OS_KV +# define SQLITE_OS_KV 0 +# undef SQLITE_OS_UNIX +# define SQLITE_OS_UNIX 0 +# undef SQLITE_OS_WIN +# define SQLITE_OS_WIN 0 +#endif +#if SQLITE_OS_KV+1>1 +# undef SQLITE_OS_OTHER +# define SQLITE_OS_OTHER 0 +# undef SQLITE_OS_UNIX +# define SQLITE_OS_UNIX 0 +# undef SQLITE_OS_WIN +# define SQLITE_OS_WIN 0 +# define SQLITE_OMIT_LOAD_EXTENSION 1 +# define SQLITE_OMIT_WAL 1 +# define SQLITE_OMIT_DEPRECATED 1 +# undef SQLITE_TEMP_STORE +# define SQLITE_TEMP_STORE 3 /* Always use memory for temporary storage */ +# define SQLITE_DQS 0 +# define SQLITE_OMIT_SHARED_CACHE 1 +# define SQLITE_OMIT_AUTOINIT 1 +#endif +#if SQLITE_OS_UNIX+1>1 +# undef SQLITE_OS_KV +# define SQLITE_OS_KV 0 +# undef SQLITE_OS_OTHER +# define SQLITE_OS_OTHER 0 +# undef SQLITE_OS_WIN +# define SQLITE_OS_WIN 0 +#endif +#if SQLITE_OS_WIN+1>1 +# undef SQLITE_OS_KV +# define SQLITE_OS_KV 0 +# undef SQLITE_OS_OTHER +# define SQLITE_OS_OTHER 0 +# undef SQLITE_OS_UNIX +# define SQLITE_OS_UNIX 0 +#endif + + +#endif /* SQLITE_OS_SETUP_H */ + +/************** End of os_setup.h ********************************************/ +/************** Continuing where we left off in os.h *************************/ + +/* If the SET_FULLSYNC macro is not defined above, then make it +** a no-op +*/ +#ifndef SET_FULLSYNC +# define SET_FULLSYNC(x,y) +#endif + +/* Maximum pathname length. Note: FILENAME_MAX defined by stdio.h +*/ +#ifndef SQLITE_MAX_PATHLEN +# define SQLITE_MAX_PATHLEN FILENAME_MAX +#endif + +/* Maximum number of symlinks that will be resolved while trying to +** expand a filename in xFullPathname() in the VFS. +*/ +#ifndef SQLITE_MAX_SYMLINK +# define SQLITE_MAX_SYMLINK 200 +#endif + +/* +** The default size of a disk sector +*/ +#ifndef SQLITE_DEFAULT_SECTOR_SIZE +# define SQLITE_DEFAULT_SECTOR_SIZE 4096 +#endif + +/* +** Temporary files are named starting with this prefix followed by 16 random +** alphanumeric characters, and no file extension. They are stored in the +** OS's standard temporary file directory, and are deleted prior to exit. +** If sqlite is being embedded in another program, you may wish to change the +** prefix to reflect your program's name, so that if your program exits +** prematurely, old temporary files can be easily identified. This can be done +** using -DSQLITE_TEMP_FILE_PREFIX=myprefix_ on the compiler command line. +** +** 2006-10-31: The default prefix used to be "sqlite_". But then +** Mcafee started using SQLite in their anti-virus product and it +** started putting files with the "sqlite" name in the c:/temp folder. +** This annoyed many windows users. Those users would then do a +** Google search for "sqlite", find the telephone numbers of the +** developers and call to wake them up at night and complain. +** For this reason, the default name prefix is changed to be "sqlite" +** spelled backwards. So the temp files are still identified, but +** anybody smart enough to figure out the code is also likely smart +** enough to know that calling the developer will not help get rid +** of the file. +*/ +#ifndef SQLITE_TEMP_FILE_PREFIX +# define SQLITE_TEMP_FILE_PREFIX "etilqs_" +#endif + +/* +** The following values may be passed as the second argument to +** sqlite3OsLock(). The various locks exhibit the following semantics: +** +** SHARED: Any number of processes may hold a SHARED lock simultaneously. +** RESERVED: A single process may hold a RESERVED lock on a file at +** any time. Other processes may hold and obtain new SHARED locks. +** PENDING: A single process may hold a PENDING lock on a file at +** any one time. Existing SHARED locks may persist, but no new +** SHARED locks may be obtained by other processes. +** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks. +** +** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a +** process that requests an EXCLUSIVE lock may actually obtain a PENDING +** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to +** sqlite3OsLock(). +*/ +#define NO_LOCK 0 +#define SHARED_LOCK 1 +#define RESERVED_LOCK 2 +#define PENDING_LOCK 3 +#define EXCLUSIVE_LOCK 4 + +/* +** File Locking Notes: (Mostly about windows but also some info for Unix) +** +** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because +** those functions are not available. So we use only LockFile() and +** UnlockFile(). +** +** LockFile() prevents not just writing but also reading by other processes. +** A SHARED_LOCK is obtained by locking a single randomly-chosen +** byte out of a specific range of bytes. The lock byte is obtained at +** random so two separate readers can probably access the file at the +** same time, unless they are unlucky and choose the same lock byte. +** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range. +** There can only be one writer. A RESERVED_LOCK is obtained by locking +** a single byte of the file that is designated as the reserved lock byte. +** A PENDING_LOCK is obtained by locking a designated byte different from +** the RESERVED_LOCK byte. +** +** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available, +** which means we can use reader/writer locks. When reader/writer locks +** are used, the lock is placed on the same range of bytes that is used +** for probabilistic locking in Win95/98/ME. Hence, the locking scheme +** will support two or more Win95 readers or two or more WinNT readers. +** But a single Win95 reader will lock out all WinNT readers and a single +** WinNT reader will lock out all other Win95 readers. +** +** The following #defines specify the range of bytes used for locking. +** SHARED_SIZE is the number of bytes available in the pool from which +** a random byte is selected for a shared lock. The pool of bytes for +** shared locks begins at SHARED_FIRST. +** +** The same locking strategy and +** byte ranges are used for Unix. This leaves open the possibility of having +** clients on win95, winNT, and unix all talking to the same shared file +** and all locking correctly. To do so would require that samba (or whatever +** tool is being used for file sharing) implements locks correctly between +** windows and unix. I'm guessing that isn't likely to happen, but by +** using the same locking range we are at least open to the possibility. +** +** Locking in windows is manditory. For this reason, we cannot store +** actual data in the bytes used for locking. The pager never allocates +** the pages involved in locking therefore. SHARED_SIZE is selected so +** that all locks will fit on a single page even at the minimum page size. +** PENDING_BYTE defines the beginning of the locks. By default PENDING_BYTE +** is set high so that we don't have to allocate an unused page except +** for very large databases. But one should test the page skipping logic +** by setting PENDING_BYTE low and running the entire regression suite. +** +** Changing the value of PENDING_BYTE results in a subtly incompatible +** file format. Depending on how it is changed, you might not notice +** the incompatibility right away, even running a full regression test. +** The default location of PENDING_BYTE is the first byte past the +** 1GB boundary. +** +*/ +#ifdef SQLITE_OMIT_WSD +# define PENDING_BYTE (0x40000000) +#else +# define PENDING_BYTE sqlite3PendingByte +#endif +#define RESERVED_BYTE (PENDING_BYTE+1) +#define SHARED_FIRST (PENDING_BYTE+2) +#define SHARED_SIZE 510 + +/* +** Wrapper around OS specific sqlite3_os_init() function. +*/ +SQLITE_PRIVATE int sqlite3OsInit(void); + +/* +** Functions for accessing sqlite3_file methods +*/ +SQLITE_PRIVATE void sqlite3OsClose(sqlite3_file*); +SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset); +SQLITE_PRIVATE int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset); +SQLITE_PRIVATE int sqlite3OsTruncate(sqlite3_file*, i64 size); +SQLITE_PRIVATE int sqlite3OsSync(sqlite3_file*, int); +SQLITE_PRIVATE int sqlite3OsFileSize(sqlite3_file*, i64 *pSize); +SQLITE_PRIVATE int sqlite3OsLock(sqlite3_file*, int); +SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int); +SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut); +SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file*,int,void*); +SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file*,int,void*); +#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0 +SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id); +SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id); +#ifndef SQLITE_OMIT_WAL +SQLITE_PRIVATE int sqlite3OsShmMap(sqlite3_file *,int,int,int,void volatile **); +SQLITE_PRIVATE int sqlite3OsShmLock(sqlite3_file *id, int, int, int); +SQLITE_PRIVATE void sqlite3OsShmBarrier(sqlite3_file *id); +SQLITE_PRIVATE int sqlite3OsShmUnmap(sqlite3_file *id, int); +#endif /* SQLITE_OMIT_WAL */ +SQLITE_PRIVATE int sqlite3OsFetch(sqlite3_file *id, i64, int, void **); +SQLITE_PRIVATE int sqlite3OsUnfetch(sqlite3_file *, i64, void *); + + +/* +** Functions for accessing sqlite3_vfs methods +*/ +SQLITE_PRIVATE int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *); +SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *, const char *, int); +SQLITE_PRIVATE int sqlite3OsAccess(sqlite3_vfs *, const char *, int, int *pResOut); +SQLITE_PRIVATE int sqlite3OsFullPathname(sqlite3_vfs *, const char *, int, char *); +#ifndef SQLITE_OMIT_LOAD_EXTENSION +SQLITE_PRIVATE void *sqlite3OsDlOpen(sqlite3_vfs *, const char *); +SQLITE_PRIVATE void sqlite3OsDlError(sqlite3_vfs *, int, char *); +SQLITE_PRIVATE void (*sqlite3OsDlSym(sqlite3_vfs *, void *, const char *))(void); +SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *, void *); +#endif /* SQLITE_OMIT_LOAD_EXTENSION */ +SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *, int, char *); +SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *, int); +SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs*); +SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); + +/* +** Convenience functions for opening and closing files using +** sqlite3_malloc() to obtain space for the file-handle structure. +*/ +SQLITE_PRIVATE int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*); +SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); + +#endif /* _SQLITE_OS_H_ */ + +/************** End of os.h **************************************************/ +/************** Continuing where we left off in sqliteInt.h ******************/ +/************** Include pager.h in the middle of sqliteInt.h *****************/ +/************** Begin file pager.h *******************************************/ +/* +** 2001 September 15 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This header file defines the interface that the sqlite page cache +** subsystem. The page cache subsystem reads and writes a file a page +** at a time and provides a journal for rollback. +*/ + +#ifndef SQLITE_PAGER_H +#define SQLITE_PAGER_H + +/* +** Default maximum size for persistent journal files. A negative +** value means no limit. This value may be overridden using the +** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit". +*/ +#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT + #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1 +#endif + +/* +** The type used to represent a page number. The first page in a file +** is called page 1. 0 is used to represent "not a page". +*/ +typedef u32 Pgno; + +/* +** Each open file is managed by a separate instance of the "Pager" structure. +*/ +typedef struct Pager Pager; + +/* +** Handle type for pages. +*/ +typedef struct PgHdr DbPage; + +/* +** Page number PAGER_SJ_PGNO is never used in an SQLite database (it is +** reserved for working around a windows/posix incompatibility). It is +** used in the journal to signify that the remainder of the journal file +** is devoted to storing a super-journal name - there are no more pages to +** roll back. See comments for function writeSuperJournal() in pager.c +** for details. +*/ +#define PAGER_SJ_PGNO_COMPUTED(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1)) +#define PAGER_SJ_PGNO(x) ((x)->lckPgno) + +/* +** Allowed values for the flags parameter to sqlite3PagerOpen(). +** +** NOTE: These values must match the corresponding BTREE_ values in btree.h. +*/ +#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */ +#define PAGER_MEMORY 0x0002 /* In-memory database */ + +/* +** Valid values for the second argument to sqlite3PagerLockingMode(). +*/ +#define PAGER_LOCKINGMODE_QUERY -1 +#define PAGER_LOCKINGMODE_NORMAL 0 +#define PAGER_LOCKINGMODE_EXCLUSIVE 1 + +/* +** Numeric constants that encode the journalmode. +** +** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY) +** are exposed in the API via the "PRAGMA journal_mode" command and +** therefore cannot be changed without a compatibility break. +*/ +#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ +#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ +#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */ +#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */ +#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */ +#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */ +#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ + +/* +** Flags that make up the mask passed to sqlite3PagerGet(). +*/ +#define PAGER_GET_NOCONTENT 0x01 /* Do not load data from disk */ +#define PAGER_GET_READONLY 0x02 /* Read-only page is acceptable */ + +/* +** Flags for sqlite3PagerSetFlags() +** +** Value constraints (enforced via assert()): +** PAGER_FULLFSYNC == SQLITE_FullFSync +** PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync +** PAGER_CACHE_SPILL == SQLITE_CacheSpill +*/ +#define PAGER_SYNCHRONOUS_OFF 0x01 /* PRAGMA synchronous=OFF */ +#define PAGER_SYNCHRONOUS_NORMAL 0x02 /* PRAGMA synchronous=NORMAL */ +#define PAGER_SYNCHRONOUS_FULL 0x03 /* PRAGMA synchronous=FULL */ +#define PAGER_SYNCHRONOUS_EXTRA 0x04 /* PRAGMA synchronous=EXTRA */ +#define PAGER_SYNCHRONOUS_MASK 0x07 /* Mask for four values above */ +#define PAGER_FULLFSYNC 0x08 /* PRAGMA fullfsync=ON */ +#define PAGER_CKPT_FULLFSYNC 0x10 /* PRAGMA checkpoint_fullfsync=ON */ +#define PAGER_CACHESPILL 0x20 /* PRAGMA cache_spill=ON */ +#define PAGER_FLAGS_MASK 0x38 /* All above except SYNCHRONOUS */ + +/* +** The remainder of this file contains the declarations of the functions +** that make up the Pager sub-system API. See source code comments for +** a detailed description of each routine. +*/ + +/* Open and close a Pager connection. */ +SQLITE_PRIVATE int sqlite3PagerOpen( + sqlite3_vfs*, + Pager **ppPager, + const char*, + int, + int, + int, + void(*)(DbPage*) +); +SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*); +SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*); + +/* Functions used to configure a Pager object. */ +SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *); +SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int); +SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager*, Pgno); +SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int); +SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int); +SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64); +SQLITE_PRIVATE void sqlite3PagerShrink(Pager*); +SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned); +SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int); +SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int); +SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*); +SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*); +SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64); +SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*); +SQLITE_PRIVATE int sqlite3PagerFlush(Pager*); + +/* Functions used to obtain and release page references. */ +SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); +SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno); +SQLITE_PRIVATE void sqlite3PagerRef(DbPage*); +SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*); +SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*); +SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*); + +/* Operations on page references. */ +SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*); +SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*); +SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int); +SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*); +SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *); +SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *); + +/* Functions used to manage pager transactions and savepoints. */ +SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*); +SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int); +SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zSuper, int); +SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*); +SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper); +SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*); +SQLITE_PRIVATE int sqlite3PagerRollback(Pager*); +SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n); +SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); +SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager); + +#ifndef SQLITE_OMIT_WAL +SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*); +SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager); +SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager); +SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen); +SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3*); +# ifdef SQLITE_ENABLE_SNAPSHOT +SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager*, sqlite3_snapshot **ppSnapshot); +SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager*, sqlite3_snapshot *pSnapshot); +SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager); +SQLITE_PRIVATE int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot); +SQLITE_PRIVATE void sqlite3PagerSnapshotUnlock(Pager *pPager); +# endif +#endif + +#if !defined(SQLITE_OMIT_WAL) && defined(SQLITE_ENABLE_SETLK_TIMEOUT) +SQLITE_PRIVATE int sqlite3PagerWalWriteLock(Pager*, int); +SQLITE_PRIVATE void sqlite3PagerWalDb(Pager*, sqlite3*); +#else +# define sqlite3PagerWalWriteLock(y,z) SQLITE_OK +# define sqlite3PagerWalDb(x,y) +#endif + +#ifdef SQLITE_DIRECT_OVERFLOW_READ +SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno); +#endif + +#ifdef SQLITE_ENABLE_ZIPVFS +SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager); +#endif + +/* Functions used to query pager state and configuration. */ +SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*); +SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*); +#endif +SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*); +SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager*, int); +SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*); +SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*); +SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*); +SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*); +SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*); +SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*); +SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *); +SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*); +SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *); + +/* Functions used to truncate the database file. */ +SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno); + +SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16); + +/* Functions to support testing and debugging. */ +#if !defined(NDEBUG) || defined(SQLITE_TEST) +SQLITE_PRIVATE Pgno sqlite3PagerPagenumber(DbPage*); +SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage*); +#endif +#ifdef SQLITE_TEST +SQLITE_PRIVATE int *sqlite3PagerStats(Pager*); +SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*); + void disable_simulated_io_errors(void); + void enable_simulated_io_errors(void); +#else +# define disable_simulated_io_errors() +# define enable_simulated_io_errors() +#endif + +#if defined(SQLITE_USE_SEH) && !defined(SQLITE_OMIT_WAL) +SQLITE_PRIVATE int sqlite3PagerWalSystemErrno(Pager*); +#endif + +#endif /* SQLITE_PAGER_H */ + +/************** End of pager.h ***********************************************/ +/************** Continuing where we left off in sqliteInt.h ******************/ /************** Include btree.h in the middle of sqliteInt.h *****************/ /************** Begin file btree.h *******************************************/ /* @@ -13983,30 +15740,38 @@ SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64); SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(Btree*,unsigned); SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree*); -SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int); -SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*); +SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree*,Pgno); +SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree*); SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree*); +SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree*); SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p); SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int); SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *); -SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); +SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int,int*); +SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char*); SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int); SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*); SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int,int); SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags); -SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*); -SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree*); +SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, Pgno*, int flags); +SQLITE_PRIVATE int sqlite3BtreeTxnState(Btree*); SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree*); + SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *, int, void(*)(void *)); SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *pBtree); #ifndef SQLITE_OMIT_SHARED_CACHE SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *pBtree, int iTab, u8 isWriteLock); #endif + +/* Savepoints are named, nestable SQL transactions mostly implemented */ +/* in vdbe.c and pager.c See https://sqlite.org/lang_savepoint.html */ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *, int, int); +/* "Checkpoint" only refers to WAL. See https://sqlite.org/wal.html#ckpt */ +#ifndef SQLITE_OMIT_WAL +SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *); +#endif + SQLITE_PRIVATE const char *sqlite3BtreeGetFilename(Btree *); SQLITE_PRIVATE const char *sqlite3BtreeGetJournalname(Btree *); SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *, Btree *); @@ -14027,7 +15792,7 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *); #define BTREE_BLOBKEY 2 /* Table has keys only - no data */ SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree*, int, int*); -SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, int*); +SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, i64*); SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor*); SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree*, int, int); @@ -14038,7 +15803,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); /* ** The second parameter to sqlite3BtreeGetMeta or sqlite3BtreeUpdateMeta -** should be one of the following values. The integer values are assigned +** should be one of the following values. The integer values are assigned ** to constants so that the offset of the corresponding field in an ** SQLite database header may be found using the following formula: ** @@ -14087,7 +15852,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); ** reduce network bandwidth. ** ** Note that BTREE_HINT_FLAGS with BTREE_BULKLOAD is the only hint used by -** standard SQLite. The other hints are provided for extentions that use +** standard SQLite. The other hints are provided for extensions that use ** the SQLite parser and code generator but substitute their own storage ** engine. */ @@ -14109,7 +15874,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); #define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */ #define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */ -/* +/* ** Flags passed as the third argument to sqlite3BtreeCursor(). ** ** For read-only cursors the wrFlag argument is always zero. For read-write @@ -14137,7 +15902,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); SQLITE_PRIVATE int sqlite3BtreeCursor( Btree*, /* BTree containing table to open */ - int iTable, /* Index of root page */ + Pgno iTable, /* Index of root page */ int wrFlag, /* 1 for writing. 0 for read-only */ struct KeyInfo*, /* First argument to compare function */ BtCursor *pCursor /* Space to write cursor structure */ @@ -14151,13 +15916,17 @@ SQLITE_PRIVATE void sqlite3BtreeCursorHint(BtCursor*, int, ...); #endif SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor*); -SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( +SQLITE_PRIVATE int sqlite3BtreeTableMoveto( BtCursor*, - UnpackedRecord *pUnKey, i64 intKey, int bias, int *pRes ); +SQLITE_PRIVATE int sqlite3BtreeIndexMoveto( + BtCursor*, + UnpackedRecord *pUnKey, + int *pRes +); SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*); SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor*, int*); SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags); @@ -14166,6 +15935,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags); #define BTREE_SAVEPOSITION 0x02 /* Leave cursor pointing at NEXT or PREV */ #define BTREE_AUXDELETE 0x04 /* not the primary delete operation */ #define BTREE_APPEND 0x08 /* Insert is likely an append */ +#define BTREE_PREFORMAT 0x80 /* Inserted data is a preformated cell */ /* An instance of the BtreePayload object describes the content of a single ** entry in either an index or table btree. @@ -14177,7 +15947,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags); ** The nMem field might be zero, indicating that no decomposition is available. ** ** Table btrees (used for rowid tables) contain an integer rowid used as -** the key and passed in the nKey field. The pKey field is zero. +** the key and passed in the nKey field. The pKey field is zero. ** pData,nData hold the content of the new entry. nZero extra zero bytes ** are appended to the end of the content when constructing the entry. ** The aMem,nMem fields are uninitialized for table btrees. @@ -14196,7 +15966,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags); ** ** This object is used to pass information into sqlite3BtreeInsert(). The ** same information used to be passed as five separate parameters. But placing -** the information into this object helps to keep the interface more +** the information into this object helps to keep the interface more ** organized and understandable, and it also helps the resulting code to ** run a little faster by using fewer registers for parameter passing. */ @@ -14218,14 +15988,23 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int flags); SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*); SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int flags); SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*); -#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC +SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor*); +SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor*); SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor*); -#endif SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor*, u32 offset, u32 amt, void*); SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt); SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*); +SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor*); -SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*); +SQLITE_PRIVATE int sqlite3BtreeIntegrityCheck( + sqlite3 *db, /* Database connection that is running the check */ + Btree *p, /* The btree to be checked */ + Pgno *aRoot, /* An array of root pages numbers for individual trees */ + int nRoot, /* Number of entries in aRoot[] */ + int mxErr, /* Stop reporting errors after this many */ + int *pnErr, /* OUT: Write number of errors seen to this variable */ + char **pzOut /* OUT: Write the error message string here */ +); SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*); SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor*); @@ -14240,14 +16019,18 @@ SQLITE_PRIVATE int sqlite3BtreeCursorHasHint(BtCursor*, unsigned int mask); SQLITE_PRIVATE int sqlite3BtreeIsReadonly(Btree *pBt); SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE sqlite3_uint64 sqlite3BtreeSeekCount(Btree*); +#else +# define sqlite3BtreeSeekCount(X) 0 +#endif + #ifndef NDEBUG SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*); #endif SQLITE_PRIVATE int sqlite3BtreeCursorIsValidNN(BtCursor*); -#ifndef SQLITE_OMIT_BTREECOUNT -SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *, i64 *); -#endif +SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3*, BtCursor*, i64*); #ifdef SQLITE_TEST SQLITE_PRIVATE int sqlite3BtreeCursorInfo(BtCursor*, int*, int); @@ -14258,6 +16041,10 @@ SQLITE_PRIVATE void sqlite3BtreeCursorList(Btree*); SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *); #endif +SQLITE_PRIVATE int sqlite3BtreeTransferRow(BtCursor*, BtCursor*, i64); + +SQLITE_PRIVATE void sqlite3BtreeClearCache(Btree*); + /* ** If we are not using shared cache, then there is no need to ** use mutexes to access the BtShared structures. So make the @@ -14270,7 +16057,7 @@ SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*); SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*); SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree*); #else -# define sqlite3BtreeEnter(X) +# define sqlite3BtreeEnter(X) # define sqlite3BtreeEnterAll(X) # define sqlite3BtreeSharable(X) 0 # define sqlite3BtreeEnterCursor(X) @@ -14364,23 +16151,23 @@ struct VdbeOp { Mem *pMem; /* Used when p4type is P4_MEM */ VTable *pVtab; /* Used when p4type is P4_VTAB */ KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */ - int *ai; /* Used when p4type is P4_INTARRAY */ + u32 *ai; /* Used when p4type is P4_INTARRAY */ SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */ Table *pTab; /* Used when p4type is P4_TABLE */ #ifdef SQLITE_ENABLE_CURSOR_HINTS Expr *pExpr; /* Used when p4type is P4_EXPR */ #endif - int (*xAdvance)(BtCursor *, int); } p4; #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS char *zComment; /* Comment to improve readability */ #endif -#ifdef VDBE_PROFILE - u32 cnt; /* Number of times this instruction was executed */ - u64 cycles; /* Total time spent executing this instruction */ -#endif #ifdef SQLITE_VDBE_COVERAGE - int iSrcLine; /* Source-code line that generated this opcode */ + u32 iSrcLine; /* Source-code line that generated this opcode + ** with flags in the upper 8 bits */ +#endif +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || defined(VDBE_PROFILE) + u64 nExec; + u64 nCycle; #endif }; typedef struct VdbeOp VdbeOp; @@ -14420,21 +16207,19 @@ typedef struct VdbeOpList VdbeOpList; #define P4_COLLSEQ (-2) /* P4 is a pointer to a CollSeq structure */ #define P4_INT32 (-3) /* P4 is a 32-bit signed integer */ #define P4_SUBPROGRAM (-4) /* P4 is a pointer to a SubProgram structure */ -#define P4_ADVANCE (-5) /* P4 is a pointer to BtreeNext() or BtreePrev() */ -#define P4_TABLE (-6) /* P4 is a pointer to a Table structure */ +#define P4_TABLE (-5) /* P4 is a pointer to a Table structure */ /* Above do not own any resources. Must free those below */ -#define P4_FREE_IF_LE (-7) -#define P4_DYNAMIC (-7) /* Pointer to memory from sqliteMalloc() */ -#define P4_FUNCDEF (-8) /* P4 is a pointer to a FuncDef structure */ -#define P4_KEYINFO (-9) /* P4 is a pointer to a KeyInfo structure */ -#define P4_EXPR (-10) /* P4 is a pointer to an Expr tree */ -#define P4_MEM (-11) /* P4 is a pointer to a Mem* structure */ -#define P4_VTAB (-12) /* P4 is a pointer to an sqlite3_vtab structure */ -#define P4_REAL (-13) /* P4 is a 64-bit floating point value */ -#define P4_INT64 (-14) /* P4 is a 64-bit signed integer */ -#define P4_INTARRAY (-15) /* P4 is a vector of 32-bit integers */ -#define P4_FUNCCTX (-16) /* P4 is a pointer to an sqlite3_context object */ -#define P4_DYNBLOB (-17) /* Pointer to memory from sqliteMalloc() */ +#define P4_FREE_IF_LE (-6) +#define P4_DYNAMIC (-6) /* Pointer to memory from sqliteMalloc() */ +#define P4_FUNCDEF (-7) /* P4 is a pointer to a FuncDef structure */ +#define P4_KEYINFO (-8) /* P4 is a pointer to a KeyInfo structure */ +#define P4_EXPR (-9) /* P4 is a pointer to an Expr tree */ +#define P4_MEM (-10) /* P4 is a pointer to a Mem* structure */ +#define P4_VTAB (-11) /* P4 is a pointer to an sqlite3_vtab structure */ +#define P4_REAL (-12) /* P4 is a 64-bit floating point value */ +#define P4_INT64 (-13) /* P4 is a 64-bit signed integer */ +#define P4_INTARRAY (-14) /* P4 is a vector of 32-bit integers */ +#define P4_FUNCCTX (-15) /* P4 is a pointer to an sqlite3_context object */ /* Error message codes for OP_Halt */ #define P5_ConstraintNotNull 1 @@ -14443,7 +16228,7 @@ typedef struct VdbeOpList VdbeOpList; #define P5_ConstraintFK 4 /* -** The Vdbe.aColName array contains 5n Mem structures, where n is the +** The Vdbe.aColName array contains 5n Mem structures, where n is the ** number of columns of data returned by the statement. */ #define COLNAME_NAME 0 @@ -14462,12 +16247,11 @@ typedef struct VdbeOpList VdbeOpList; #endif /* -** The following macro converts a relative address in the p2 field -** of a VdbeOp structure into a negative number so that -** sqlite3VdbeAddOpList() knows that the address is relative. Calling -** the macro again restores the address. +** The following macro converts a label returned by sqlite3VdbeMakeLabel() +** into an index into the Parse.aLabel[] array that contains the resolved +** address of that label. */ -#define ADDR(X) (-1-(X)) +#define ADDR(X) (~(X)) /* ** The makefile scans the vdbe.c source file and creates the "opcodes.h" @@ -14480,53 +16264,53 @@ typedef struct VdbeOpList VdbeOpList; #define OP_Savepoint 0 #define OP_AutoCommit 1 #define OP_Transaction 2 -#define OP_SorterNext 3 /* jump */ -#define OP_PrevIfOpen 4 /* jump */ -#define OP_NextIfOpen 5 /* jump */ -#define OP_Prev 6 /* jump */ -#define OP_Next 7 /* jump */ -#define OP_Checkpoint 8 -#define OP_JournalMode 9 -#define OP_Vacuum 10 -#define OP_VFilter 11 /* jump, synopsis: iplan=r[P3] zplan='P4' */ -#define OP_VUpdate 12 /* synopsis: data=r[P3@P2] */ -#define OP_Goto 13 /* jump */ -#define OP_Gosub 14 /* jump */ -#define OP_InitCoroutine 15 /* jump */ -#define OP_Yield 16 /* jump */ -#define OP_MustBeInt 17 /* jump */ -#define OP_Jump 18 /* jump */ +#define OP_Checkpoint 3 +#define OP_JournalMode 4 +#define OP_Vacuum 5 +#define OP_VFilter 6 /* jump, synopsis: iplan=r[P3] zplan='P4' */ +#define OP_VUpdate 7 /* synopsis: data=r[P3@P2] */ +#define OP_Init 8 /* jump, synopsis: Start at P2 */ +#define OP_Goto 9 /* jump */ +#define OP_Gosub 10 /* jump */ +#define OP_InitCoroutine 11 /* jump */ +#define OP_Yield 12 /* jump */ +#define OP_MustBeInt 13 /* jump */ +#define OP_Jump 14 /* jump */ +#define OP_Once 15 /* jump */ +#define OP_If 16 /* jump */ +#define OP_IfNot 17 /* jump */ +#define OP_IsType 18 /* jump, synopsis: if typeof(P1.P3) in P5 goto P2 */ #define OP_Not 19 /* same as TK_NOT, synopsis: r[P2]= !r[P1] */ -#define OP_Once 20 /* jump */ -#define OP_If 21 /* jump */ -#define OP_IfNot 22 /* jump */ -#define OP_IfNullRow 23 /* jump, synopsis: if P1.nullRow then r[P3]=NULL, goto P2 */ -#define OP_SeekLT 24 /* jump, synopsis: key=r[P3@P4] */ -#define OP_SeekLE 25 /* jump, synopsis: key=r[P3@P4] */ -#define OP_SeekGE 26 /* jump, synopsis: key=r[P3@P4] */ -#define OP_SeekGT 27 /* jump, synopsis: key=r[P3@P4] */ -#define OP_NoConflict 28 /* jump, synopsis: key=r[P3@P4] */ -#define OP_NotFound 29 /* jump, synopsis: key=r[P3@P4] */ -#define OP_Found 30 /* jump, synopsis: key=r[P3@P4] */ -#define OP_SeekRowid 31 /* jump, synopsis: intkey=r[P3] */ -#define OP_NotExists 32 /* jump, synopsis: intkey=r[P3] */ -#define OP_Last 33 /* jump */ -#define OP_IfSmaller 34 /* jump */ -#define OP_SorterSort 35 /* jump */ -#define OP_Sort 36 /* jump */ -#define OP_Rewind 37 /* jump */ -#define OP_IdxLE 38 /* jump, synopsis: key=r[P3@P4] */ -#define OP_IdxGT 39 /* jump, synopsis: key=r[P3@P4] */ -#define OP_IdxLT 40 /* jump, synopsis: key=r[P3@P4] */ -#define OP_IdxGE 41 /* jump, synopsis: key=r[P3@P4] */ -#define OP_RowSetRead 42 /* jump, synopsis: r[P3]=rowset(P1) */ +#define OP_IfNullRow 20 /* jump, synopsis: if P1.nullRow then r[P3]=NULL, goto P2 */ +#define OP_SeekLT 21 /* jump, synopsis: key=r[P3@P4] */ +#define OP_SeekLE 22 /* jump, synopsis: key=r[P3@P4] */ +#define OP_SeekGE 23 /* jump, synopsis: key=r[P3@P4] */ +#define OP_SeekGT 24 /* jump, synopsis: key=r[P3@P4] */ +#define OP_IfNotOpen 25 /* jump, synopsis: if( !csr[P1] ) goto P2 */ +#define OP_IfNoHope 26 /* jump, synopsis: key=r[P3@P4] */ +#define OP_NoConflict 27 /* jump, synopsis: key=r[P3@P4] */ +#define OP_NotFound 28 /* jump, synopsis: key=r[P3@P4] */ +#define OP_Found 29 /* jump, synopsis: key=r[P3@P4] */ +#define OP_SeekRowid 30 /* jump, synopsis: intkey=r[P3] */ +#define OP_NotExists 31 /* jump, synopsis: intkey=r[P3] */ +#define OP_Last 32 /* jump */ +#define OP_IfSmaller 33 /* jump */ +#define OP_SorterSort 34 /* jump */ +#define OP_Sort 35 /* jump */ +#define OP_Rewind 36 /* jump */ +#define OP_SorterNext 37 /* jump */ +#define OP_Prev 38 /* jump */ +#define OP_Next 39 /* jump */ +#define OP_IdxLE 40 /* jump, synopsis: key=r[P3@P4] */ +#define OP_IdxGT 41 /* jump, synopsis: key=r[P3@P4] */ +#define OP_IdxLT 42 /* jump, synopsis: key=r[P3@P4] */ #define OP_Or 43 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */ #define OP_And 44 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */ -#define OP_RowSetTest 45 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */ -#define OP_Program 46 /* jump */ -#define OP_FkIfZero 47 /* jump, synopsis: if fkctr[P1]==0 goto P2 */ -#define OP_IfPos 48 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */ -#define OP_IfNotZero 49 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */ +#define OP_IdxGE 45 /* jump, synopsis: key=r[P3@P4] */ +#define OP_RowSetRead 46 /* jump, synopsis: r[P3]=rowset(P1) */ +#define OP_RowSetTest 47 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */ +#define OP_Program 48 /* jump */ +#define OP_FkIfZero 49 /* jump, synopsis: if fkctr[P1]==0 goto P2 */ #define OP_IsNull 50 /* jump, same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */ #define OP_NotNull 51 /* jump, same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */ #define OP_Ne 52 /* jump, same as TK_NE, synopsis: IF r[P3]!=r[P1] */ @@ -14535,120 +16319,135 @@ typedef struct VdbeOpList VdbeOpList; #define OP_Le 55 /* jump, same as TK_LE, synopsis: IF r[P3]<=r[P1] */ #define OP_Lt 56 /* jump, same as TK_LT, synopsis: IF r[P3]=r[P1] */ -#define OP_ElseNotEq 58 /* jump, same as TK_ESCAPE */ -#define OP_DecrJumpZero 59 /* jump, synopsis: if (--r[P1])==0 goto P2 */ -#define OP_IncrVacuum 60 /* jump */ -#define OP_VNext 61 /* jump */ -#define OP_Init 62 /* jump, synopsis: Start at P2 */ -#define OP_Return 63 -#define OP_EndCoroutine 64 -#define OP_HaltIfNull 65 /* synopsis: if r[P3]=null halt */ -#define OP_Halt 66 -#define OP_Integer 67 /* synopsis: r[P2]=P1 */ -#define OP_Int64 68 /* synopsis: r[P2]=P4 */ -#define OP_String 69 /* synopsis: r[P2]='P4' (len=P1) */ -#define OP_Null 70 /* synopsis: r[P2..P3]=NULL */ -#define OP_SoftNull 71 /* synopsis: r[P1]=NULL */ -#define OP_Blob 72 /* synopsis: r[P2]=P4 (len=P1) */ -#define OP_Variable 73 /* synopsis: r[P2]=parameter(P1,P4) */ -#define OP_Move 74 /* synopsis: r[P2@P3]=r[P1@P3] */ -#define OP_Copy 75 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */ -#define OP_SCopy 76 /* synopsis: r[P2]=r[P1] */ -#define OP_IntCopy 77 /* synopsis: r[P2]=r[P1] */ -#define OP_ResultRow 78 /* synopsis: output=r[P1@P2] */ -#define OP_CollSeq 79 -#define OP_AddImm 80 /* synopsis: r[P1]=r[P1]+P2 */ -#define OP_RealAffinity 81 -#define OP_Cast 82 /* synopsis: affinity(r[P1]) */ -#define OP_Permutation 83 -#define OP_Compare 84 /* synopsis: r[P1@P3] <-> r[P2@P3] */ -#define OP_BitAnd 85 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */ -#define OP_BitOr 86 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */ -#define OP_ShiftLeft 87 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<>r[P1] */ -#define OP_Add 89 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */ -#define OP_Subtract 90 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */ -#define OP_Multiply 91 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */ -#define OP_Divide 92 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */ -#define OP_Remainder 93 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */ -#define OP_Concat 94 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */ -#define OP_IsTrue 95 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */ -#define OP_BitNot 96 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */ -#define OP_Offset 97 /* synopsis: r[P3] = sqlite_offset(P1) */ -#define OP_Column 98 /* synopsis: r[P3]=PX */ -#define OP_String8 99 /* same as TK_STRING, synopsis: r[P2]='P4' */ -#define OP_Affinity 100 /* synopsis: affinity(r[P1@P2]) */ -#define OP_MakeRecord 101 /* synopsis: r[P3]=mkrec(r[P1@P2]) */ -#define OP_Count 102 /* synopsis: r[P2]=count() */ -#define OP_ReadCookie 103 -#define OP_SetCookie 104 -#define OP_ReopenIdx 105 /* synopsis: root=P2 iDb=P3 */ -#define OP_OpenRead 106 /* synopsis: root=P2 iDb=P3 */ -#define OP_OpenWrite 107 /* synopsis: root=P2 iDb=P3 */ -#define OP_OpenDup 108 -#define OP_OpenAutoindex 109 /* synopsis: nColumn=P2 */ -#define OP_OpenEphemeral 110 /* synopsis: nColumn=P2 */ -#define OP_SorterOpen 111 -#define OP_SequenceTest 112 /* synopsis: if( cursor[P1].ctr++ ) pc = P2 */ -#define OP_OpenPseudo 113 /* synopsis: P3 columns in r[P2] */ -#define OP_Close 114 -#define OP_ColumnsUsed 115 -#define OP_Sequence 116 /* synopsis: r[P2]=cursor[P1].ctr++ */ -#define OP_NewRowid 117 /* synopsis: r[P2]=rowid */ -#define OP_Insert 118 /* synopsis: intkey=r[P3] data=r[P2] */ -#define OP_InsertInt 119 /* synopsis: intkey=P3 data=r[P2] */ -#define OP_Delete 120 -#define OP_ResetCount 121 -#define OP_SorterCompare 122 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */ -#define OP_SorterData 123 /* synopsis: r[P2]=data */ -#define OP_RowData 124 /* synopsis: r[P2]=data */ -#define OP_Rowid 125 /* synopsis: r[P2]=rowid */ -#define OP_NullRow 126 -#define OP_SeekEnd 127 -#define OP_SorterInsert 128 /* synopsis: key=r[P2] */ -#define OP_IdxInsert 129 /* synopsis: key=r[P2] */ -#define OP_IdxDelete 130 /* synopsis: key=r[P2@P3] */ -#define OP_DeferredSeek 131 /* synopsis: Move P3 to P1.rowid if needed */ -#define OP_IdxRowid 132 /* synopsis: r[P2]=rowid */ -#define OP_Destroy 133 -#define OP_Real 134 /* same as TK_FLOAT, synopsis: r[P2]=P4 */ -#define OP_Clear 135 -#define OP_ResetSorter 136 -#define OP_CreateBtree 137 /* synopsis: r[P2]=root iDb=P1 flags=P3 */ -#define OP_SqlExec 138 -#define OP_ParseSchema 139 -#define OP_LoadAnalysis 140 -#define OP_DropTable 141 -#define OP_DropIndex 142 -#define OP_DropTrigger 143 -#define OP_IntegrityCk 144 -#define OP_RowSetAdd 145 /* synopsis: rowset(P1)=r[P2] */ -#define OP_Param 146 -#define OP_FkCounter 147 /* synopsis: fkctr[P1]+=P2 */ -#define OP_MemMax 148 /* synopsis: r[P1]=max(r[P1],r[P2]) */ -#define OP_OffsetLimit 149 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */ -#define OP_AggStep0 150 /* synopsis: accum=r[P3] step(r[P2@P5]) */ -#define OP_AggStep 151 /* synopsis: accum=r[P3] step(r[P2@P5]) */ -#define OP_AggFinal 152 /* synopsis: accum=r[P1] N=P2 */ -#define OP_Expire 153 -#define OP_TableLock 154 /* synopsis: iDb=P1 root=P2 write=P3 */ -#define OP_VBegin 155 -#define OP_VCreate 156 -#define OP_VDestroy 157 -#define OP_VOpen 158 -#define OP_VColumn 159 /* synopsis: r[P3]=vcolumn(P2) */ -#define OP_VRename 160 -#define OP_Pagecount 161 -#define OP_MaxPgcnt 162 -#define OP_PureFunc0 163 -#define OP_Function0 164 /* synopsis: r[P3]=func(r[P2@P5]) */ -#define OP_PureFunc 165 -#define OP_Function 166 /* synopsis: r[P3]=func(r[P2@P5]) */ -#define OP_Trace 167 -#define OP_CursorHint 168 -#define OP_Noop 169 -#define OP_Explain 170 -#define OP_Abortable 171 +#define OP_ElseEq 58 /* jump, same as TK_ESCAPE */ +#define OP_IfPos 59 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */ +#define OP_IfNotZero 60 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */ +#define OP_DecrJumpZero 61 /* jump, synopsis: if (--r[P1])==0 goto P2 */ +#define OP_IncrVacuum 62 /* jump */ +#define OP_VNext 63 /* jump */ +#define OP_Filter 64 /* jump, synopsis: if key(P3@P4) not in filter(P1) goto P2 */ +#define OP_PureFunc 65 /* synopsis: r[P3]=func(r[P2@NP]) */ +#define OP_Function 66 /* synopsis: r[P3]=func(r[P2@NP]) */ +#define OP_Return 67 +#define OP_EndCoroutine 68 +#define OP_HaltIfNull 69 /* synopsis: if r[P3]=null halt */ +#define OP_Halt 70 +#define OP_Integer 71 /* synopsis: r[P2]=P1 */ +#define OP_Int64 72 /* synopsis: r[P2]=P4 */ +#define OP_String 73 /* synopsis: r[P2]='P4' (len=P1) */ +#define OP_BeginSubrtn 74 /* synopsis: r[P2]=NULL */ +#define OP_Null 75 /* synopsis: r[P2..P3]=NULL */ +#define OP_SoftNull 76 /* synopsis: r[P1]=NULL */ +#define OP_Blob 77 /* synopsis: r[P2]=P4 (len=P1) */ +#define OP_Variable 78 /* synopsis: r[P2]=parameter(P1,P4) */ +#define OP_Move 79 /* synopsis: r[P2@P3]=r[P1@P3] */ +#define OP_Copy 80 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */ +#define OP_SCopy 81 /* synopsis: r[P2]=r[P1] */ +#define OP_IntCopy 82 /* synopsis: r[P2]=r[P1] */ +#define OP_FkCheck 83 +#define OP_ResultRow 84 /* synopsis: output=r[P1@P2] */ +#define OP_CollSeq 85 +#define OP_AddImm 86 /* synopsis: r[P1]=r[P1]+P2 */ +#define OP_RealAffinity 87 +#define OP_Cast 88 /* synopsis: affinity(r[P1]) */ +#define OP_Permutation 89 +#define OP_Compare 90 /* synopsis: r[P1@P3] <-> r[P2@P3] */ +#define OP_IsTrue 91 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */ +#define OP_ZeroOrNull 92 /* synopsis: r[P2] = 0 OR NULL */ +#define OP_Offset 93 /* synopsis: r[P3] = sqlite_offset(P1) */ +#define OP_Column 94 /* synopsis: r[P3]=PX cursor P1 column P2 */ +#define OP_TypeCheck 95 /* synopsis: typecheck(r[P1@P2]) */ +#define OP_Affinity 96 /* synopsis: affinity(r[P1@P2]) */ +#define OP_MakeRecord 97 /* synopsis: r[P3]=mkrec(r[P1@P2]) */ +#define OP_Count 98 /* synopsis: r[P2]=count() */ +#define OP_ReadCookie 99 +#define OP_SetCookie 100 +#define OP_ReopenIdx 101 /* synopsis: root=P2 iDb=P3 */ +#define OP_BitAnd 102 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */ +#define OP_BitOr 103 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */ +#define OP_ShiftLeft 104 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<>r[P1] */ +#define OP_Add 106 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */ +#define OP_Subtract 107 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */ +#define OP_Multiply 108 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */ +#define OP_Divide 109 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */ +#define OP_Remainder 110 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */ +#define OP_Concat 111 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */ +#define OP_OpenRead 112 /* synopsis: root=P2 iDb=P3 */ +#define OP_OpenWrite 113 /* synopsis: root=P2 iDb=P3 */ +#define OP_BitNot 114 /* same as TK_BITNOT, synopsis: r[P2]= ~r[P1] */ +#define OP_OpenDup 115 +#define OP_OpenAutoindex 116 /* synopsis: nColumn=P2 */ +#define OP_String8 117 /* same as TK_STRING, synopsis: r[P2]='P4' */ +#define OP_OpenEphemeral 118 /* synopsis: nColumn=P2 */ +#define OP_SorterOpen 119 +#define OP_SequenceTest 120 /* synopsis: if( cursor[P1].ctr++ ) pc = P2 */ +#define OP_OpenPseudo 121 /* synopsis: P3 columns in r[P2] */ +#define OP_Close 122 +#define OP_ColumnsUsed 123 +#define OP_SeekScan 124 /* synopsis: Scan-ahead up to P1 rows */ +#define OP_SeekHit 125 /* synopsis: set P2<=seekHit<=P3 */ +#define OP_Sequence 126 /* synopsis: r[P2]=cursor[P1].ctr++ */ +#define OP_NewRowid 127 /* synopsis: r[P2]=rowid */ +#define OP_Insert 128 /* synopsis: intkey=r[P3] data=r[P2] */ +#define OP_RowCell 129 +#define OP_Delete 130 +#define OP_ResetCount 131 +#define OP_SorterCompare 132 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */ +#define OP_SorterData 133 /* synopsis: r[P2]=data */ +#define OP_RowData 134 /* synopsis: r[P2]=data */ +#define OP_Rowid 135 /* synopsis: r[P2]=PX rowid of P1 */ +#define OP_NullRow 136 +#define OP_SeekEnd 137 +#define OP_IdxInsert 138 /* synopsis: key=r[P2] */ +#define OP_SorterInsert 139 /* synopsis: key=r[P2] */ +#define OP_IdxDelete 140 /* synopsis: key=r[P2@P3] */ +#define OP_DeferredSeek 141 /* synopsis: Move P3 to P1.rowid if needed */ +#define OP_IdxRowid 142 /* synopsis: r[P2]=rowid */ +#define OP_FinishSeek 143 +#define OP_Destroy 144 +#define OP_Clear 145 +#define OP_ResetSorter 146 +#define OP_CreateBtree 147 /* synopsis: r[P2]=root iDb=P1 flags=P3 */ +#define OP_SqlExec 148 +#define OP_ParseSchema 149 +#define OP_LoadAnalysis 150 +#define OP_DropTable 151 +#define OP_DropIndex 152 +#define OP_Real 153 /* same as TK_FLOAT, synopsis: r[P2]=P4 */ +#define OP_DropTrigger 154 +#define OP_IntegrityCk 155 +#define OP_RowSetAdd 156 /* synopsis: rowset(P1)=r[P2] */ +#define OP_Param 157 +#define OP_FkCounter 158 /* synopsis: fkctr[P1]+=P2 */ +#define OP_MemMax 159 /* synopsis: r[P1]=max(r[P1],r[P2]) */ +#define OP_OffsetLimit 160 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */ +#define OP_AggInverse 161 /* synopsis: accum=r[P3] inverse(r[P2@P5]) */ +#define OP_AggStep 162 /* synopsis: accum=r[P3] step(r[P2@P5]) */ +#define OP_AggStep1 163 /* synopsis: accum=r[P3] step(r[P2@P5]) */ +#define OP_AggValue 164 /* synopsis: r[P3]=value N=P2 */ +#define OP_AggFinal 165 /* synopsis: accum=r[P1] N=P2 */ +#define OP_Expire 166 +#define OP_CursorLock 167 +#define OP_CursorUnlock 168 +#define OP_TableLock 169 /* synopsis: iDb=P1 root=P2 write=P3 */ +#define OP_VBegin 170 +#define OP_VCreate 171 +#define OP_VDestroy 172 +#define OP_VOpen 173 +#define OP_VInitIn 174 /* synopsis: r[P2]=ValueList(P1,P3) */ +#define OP_VColumn 175 /* synopsis: r[P3]=vcolumn(P2) */ +#define OP_VRename 176 +#define OP_Pagecount 177 +#define OP_MaxPgcnt 178 +#define OP_ClrSubtype 179 /* synopsis: r[P1].subtype = 0 */ +#define OP_FilterAdd 180 /* synopsis: filter(P1) += key(P3@P4) */ +#define OP_Trace 181 +#define OP_CursorHint 182 +#define OP_ReleaseReg 183 /* synopsis: release r[P1@P2] mask P3 */ +#define OP_Noop 184 +#define OP_Explain 185 +#define OP_Abortable 186 /* Properties such as "out2" or "jump" that are specified in ** comments following the "case" for each opcode in the vdbe.c @@ -14660,37 +16459,40 @@ typedef struct VdbeOpList VdbeOpList; #define OPFLG_IN3 0x08 /* in3: P3 is an input */ #define OPFLG_OUT2 0x10 /* out2: P2 is an output */ #define OPFLG_OUT3 0x20 /* out3: P3 is an output */ +#define OPFLG_NCYCLE 0x40 /* ncycle:Cycles count against P1 */ #define OPFLG_INITIALIZER {\ -/* 0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,\ -/* 8 */ 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x01, 0x01,\ -/* 16 */ 0x03, 0x03, 0x01, 0x12, 0x01, 0x03, 0x03, 0x01,\ -/* 24 */ 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09,\ -/* 32 */ 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\ -/* 40 */ 0x01, 0x01, 0x23, 0x26, 0x26, 0x0b, 0x01, 0x01,\ -/* 48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\ -/* 56 */ 0x0b, 0x0b, 0x01, 0x03, 0x01, 0x01, 0x01, 0x02,\ -/* 64 */ 0x02, 0x08, 0x00, 0x10, 0x10, 0x10, 0x10, 0x00,\ -/* 72 */ 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\ -/* 80 */ 0x02, 0x02, 0x02, 0x00, 0x00, 0x26, 0x26, 0x26,\ -/* 88 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x12,\ -/* 96 */ 0x12, 0x20, 0x00, 0x10, 0x00, 0x00, 0x10, 0x10,\ -/* 104 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 112 */ 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\ -/* 120 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00,\ -/* 128 */ 0x04, 0x04, 0x00, 0x00, 0x10, 0x10, 0x10, 0x00,\ -/* 136 */ 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 144 */ 0x00, 0x06, 0x10, 0x00, 0x04, 0x1a, 0x00, 0x00,\ -/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 160 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 168 */ 0x00, 0x00, 0x00, 0x00,} +/* 0 */ 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x41, 0x00,\ +/* 8 */ 0x01, 0x01, 0x01, 0x01, 0x03, 0x03, 0x01, 0x01,\ +/* 16 */ 0x03, 0x03, 0x01, 0x12, 0x01, 0x49, 0x49, 0x49,\ +/* 24 */ 0x49, 0x01, 0x49, 0x49, 0x49, 0x49, 0x49, 0x49,\ +/* 32 */ 0x41, 0x01, 0x41, 0x41, 0x41, 0x01, 0x41, 0x41,\ +/* 40 */ 0x41, 0x41, 0x41, 0x26, 0x26, 0x41, 0x23, 0x0b,\ +/* 48 */ 0x01, 0x01, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\ +/* 56 */ 0x0b, 0x0b, 0x01, 0x03, 0x03, 0x03, 0x01, 0x41,\ +/* 64 */ 0x01, 0x00, 0x00, 0x02, 0x02, 0x08, 0x00, 0x10,\ +/* 72 */ 0x10, 0x10, 0x00, 0x10, 0x00, 0x10, 0x10, 0x00,\ +/* 80 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x02, 0x02,\ +/* 88 */ 0x02, 0x00, 0x00, 0x12, 0x1e, 0x20, 0x40, 0x00,\ +/* 96 */ 0x00, 0x00, 0x10, 0x10, 0x00, 0x40, 0x26, 0x26,\ +/* 104 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26,\ +/* 112 */ 0x40, 0x00, 0x12, 0x40, 0x40, 0x10, 0x40, 0x00,\ +/* 120 */ 0x00, 0x00, 0x40, 0x00, 0x40, 0x40, 0x10, 0x10,\ +/* 128 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x50,\ +/* 136 */ 0x00, 0x40, 0x04, 0x04, 0x00, 0x40, 0x50, 0x40,\ +/* 144 */ 0x10, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,\ +/* 152 */ 0x00, 0x10, 0x00, 0x00, 0x06, 0x10, 0x00, 0x04,\ +/* 160 */ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ +/* 168 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x50, 0x40,\ +/* 176 */ 0x00, 0x10, 0x10, 0x02, 0x00, 0x00, 0x00, 0x00,\ +/* 184 */ 0x00, 0x00, 0x00,} -/* The sqlite3P2Values() routine is able to run faster if it knows +/* The resolve3P2Values() routine is able to run faster if it knows ** the value of the largest JUMP opcode. The smaller the maximum ** JUMP opcode the better, so the mkopcodeh.tcl script that ** generated this include file strives to group all JUMP opcodes ** together near the beginning of the list. */ -#define SQLITE_MX_JUMP_OPCODE 62 /* Maximum JUMP opcode */ +#define SQLITE_MX_JUMP_OPCODE 64 /* Maximum JUMP opcode */ /************** End of opcodes.h *********************************************/ /************** Continuing where we left off in vdbe.h ***********************/ @@ -14706,6 +16508,7 @@ typedef struct VdbeOpList VdbeOpList; ** for a description of what each of these routines does. */ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse*); +SQLITE_PRIVATE Parse *sqlite3VdbeParser(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int); @@ -14716,6 +16519,7 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int); +SQLITE_PRIVATE int sqlite3VdbeAddFunctionCall(Parse*,int,int,int,int,const FuncDef*,int); SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe*,int); #if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS) SQLITE_PRIVATE void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N); @@ -14726,47 +16530,65 @@ SQLITE_PRIVATE void sqlite3VdbeVerifyNoResultRow(Vdbe *p); #endif #if defined(SQLITE_DEBUG) SQLITE_PRIVATE void sqlite3VdbeVerifyAbortable(Vdbe *p, int); +SQLITE_PRIVATE void sqlite3VdbeNoJumpsOutsideSubrtn(Vdbe*,int,int,int); #else # define sqlite3VdbeVerifyAbortable(A,B) +# define sqlite3VdbeNoJumpsOutsideSubrtn(A,B,C,D) #endif SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp,int iLineno); #ifndef SQLITE_OMIT_EXPLAIN -SQLITE_PRIVATE void sqlite3VdbeExplain(Parse*,u8,const char*,...); +SQLITE_PRIVATE int sqlite3VdbeExplain(Parse*,u8,const char*,...); SQLITE_PRIVATE void sqlite3VdbeExplainPop(Parse*); SQLITE_PRIVATE int sqlite3VdbeExplainParent(Parse*); # define ExplainQueryPlan(P) sqlite3VdbeExplain P +# ifdef SQLITE_ENABLE_STMT_SCANSTATUS +# define ExplainQueryPlan2(V,P) (V = sqlite3VdbeExplain P) +# else +# define ExplainQueryPlan2(V,P) ExplainQueryPlan(P) +# endif # define ExplainQueryPlanPop(P) sqlite3VdbeExplainPop(P) # define ExplainQueryPlanParent(P) sqlite3VdbeExplainParent(P) #else # define ExplainQueryPlan(P) +# define ExplainQueryPlan2(V,P) # define ExplainQueryPlanPop(P) # define ExplainQueryPlanParent(P) 0 +# define sqlite3ExplainBreakpoint(A,B) /*no-op*/ #endif -SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*); -SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8); -SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1); -SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2); -SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3); +#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_EXPLAIN) +SQLITE_PRIVATE void sqlite3ExplainBreakpoint(const char*,const char*); +#else +# define sqlite3ExplainBreakpoint(A,B) /*no-op*/ +#endif +SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*, int, char*, u16); +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, int addr, u8); +SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, int addr, int P1); +SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2); +SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3); SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5); +SQLITE_PRIVATE void sqlite3VdbeTypeofColumn(Vdbe*, int); SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr); +SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe*, int addr); SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr); SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE void sqlite3VdbeReleaseRegisters(Parse*,int addr, int n, u32 mask, int); +#else +# define sqlite3VdbeReleaseRegisters(P,A,N,M,F) +#endif SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N); SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type); SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*); SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int); SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int); -SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe*); +SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetLastOp(Vdbe*); +SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Parse*); SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeReusable(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeClearObject(sqlite3*,Vdbe*); SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*); SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int); -#ifdef SQLITE_COVERAGE_TEST -SQLITE_PRIVATE int sqlite3VdbeLabelHasBeenResolved(Vdbe*,int); -#endif SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*); #ifdef SQLITE_DEBUG SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *, int); @@ -14780,6 +16602,10 @@ SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*); SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe*); SQLITE_PRIVATE u8 sqlite3VdbePrepareFlags(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe*, const char *z, int n, u8); +#ifdef SQLITE_ENABLE_NORMALIZE +SQLITE_PRIVATE void sqlite3VdbeAddDblquoteStr(sqlite3*,Vdbe*,const char*); +SQLITE_PRIVATE int sqlite3VdbeUsesDoubleQuotedString(Vdbe*,const char*); +#endif SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe*,Vdbe*); SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe*, int*, int*); SQLITE_PRIVATE sqlite3_value *sqlite3VdbeGetBoundValue(Vdbe*, int, u8); @@ -14788,6 +16614,7 @@ SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe*, int); SQLITE_PRIVATE char *sqlite3VdbeExpandSql(Vdbe*, const char*); #endif SQLITE_PRIVATE int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*); +SQLITE_PRIVATE int sqlite3BlobCompare(const Mem*, const Mem*); SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*); SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*); @@ -14797,11 +16624,13 @@ SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo*); typedef int (*RecordCompare)(int,const void*,UnpackedRecord*); SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord*); -#ifndef SQLITE_OMIT_TRIGGER SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *); -#endif +SQLITE_PRIVATE int sqlite3VdbeHasSubProgram(Vdbe*); SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context*); +#ifdef SQLITE_ENABLE_BYTECODE_VTAB +SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3*); +#endif /* Use SQLITE_ENABLE_COMMENTS to enable generation of extra comments on ** each VDBE opcode. @@ -14830,7 +16659,7 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe*, const char*, ...); ** The VdbeCoverage macros are used to set a coverage testing point ** for VDBE branch instructions. The coverage testing points are line ** numbers in the sqlite3.c source file. VDBE branch coverage testing -** only works with an amalagmation build. That's ok since a VDBE branch +** only works with an amalgamation build. That's ok since a VDBE branch ** coverage build designed for testing the test suite only. No application ** should ever ship with VDBE branch coverage measuring turned on. ** @@ -14843,286 +16672,77 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe*, const char*, ...); ** ** VdbeCoverageNeverTaken(v) // Previous branch is never taken ** +** VdbeCoverageNeverNull(v) // Previous three-way branch is only +** // taken on the first two ways. The +** // NULL option is not possible +** +** VdbeCoverageEqNe(v) // Previous OP_Jump is only interested +** // in distinguishing equal and not-equal. +** ** Every VDBE branch operation must be tagged with one of the macros above. ** If not, then when "make test" is run with -DSQLITE_VDBE_COVERAGE and ** -DSQLITE_DEBUG then an ALWAYS() will fail in the vdbeTakeBranch() ** routine in vdbe.c, alerting the developer to the missed tag. +** +** During testing, the test application will invoke +** sqlite3_test_control(SQLITE_TESTCTRL_VDBE_COVERAGE,...) to set a callback +** routine that is invoked as each bytecode branch is taken. The callback +** contains the sqlite3.c source line number of the VdbeCoverage macro and +** flags to indicate whether or not the branch was taken. The test application +** is responsible for keeping track of this and reporting byte-code branches +** that are never taken. +** +** See the VdbeBranchTaken() macro and vdbeTakeBranch() function in the +** vdbe.c source file for additional information. */ #ifdef SQLITE_VDBE_COVERAGE SQLITE_PRIVATE void sqlite3VdbeSetLineNumber(Vdbe*,int); # define VdbeCoverage(v) sqlite3VdbeSetLineNumber(v,__LINE__) # define VdbeCoverageIf(v,x) if(x)sqlite3VdbeSetLineNumber(v,__LINE__) -# define VdbeCoverageAlwaysTaken(v) sqlite3VdbeSetLineNumber(v,2); -# define VdbeCoverageNeverTaken(v) sqlite3VdbeSetLineNumber(v,1); +# define VdbeCoverageAlwaysTaken(v) \ + sqlite3VdbeSetLineNumber(v,__LINE__|0x5000000); +# define VdbeCoverageNeverTaken(v) \ + sqlite3VdbeSetLineNumber(v,__LINE__|0x6000000); +# define VdbeCoverageNeverNull(v) \ + sqlite3VdbeSetLineNumber(v,__LINE__|0x4000000); +# define VdbeCoverageNeverNullIf(v,x) \ + if(x)sqlite3VdbeSetLineNumber(v,__LINE__|0x4000000); +# define VdbeCoverageEqNe(v) \ + sqlite3VdbeSetLineNumber(v,__LINE__|0x8000000); # define VDBE_OFFSET_LINENO(x) (__LINE__+x) #else # define VdbeCoverage(v) # define VdbeCoverageIf(v,x) # define VdbeCoverageAlwaysTaken(v) # define VdbeCoverageNeverTaken(v) +# define VdbeCoverageNeverNull(v) +# define VdbeCoverageNeverNullIf(v,x) +# define VdbeCoverageEqNe(v) # define VDBE_OFFSET_LINENO(x) 0 #endif #ifdef SQLITE_ENABLE_STMT_SCANSTATUS SQLITE_PRIVATE void sqlite3VdbeScanStatus(Vdbe*, int, int, int, LogEst, const char*); +SQLITE_PRIVATE void sqlite3VdbeScanStatusRange(Vdbe*, int, int, int); +SQLITE_PRIVATE void sqlite3VdbeScanStatusCounters(Vdbe*, int, int, int); #else -# define sqlite3VdbeScanStatus(a,b,c,d,e) +# define sqlite3VdbeScanStatus(a,b,c,d,e,f) +# define sqlite3VdbeScanStatusRange(a,b,c,d) +# define sqlite3VdbeScanStatusCounters(a,b,c,d) +#endif + +#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) +SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, VdbeOp*); +#endif + +#if defined(SQLITE_ENABLE_CURSOR_HINTS) && defined(SQLITE_DEBUG) +SQLITE_PRIVATE int sqlite3CursorRangeHintExprCheck(Walker *pWalker, Expr *pExpr); #endif #endif /* SQLITE_VDBE_H */ /************** End of vdbe.h ************************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include pager.h in the middle of sqliteInt.h *****************/ -/************** Begin file pager.h *******************************************/ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite page cache -** subsystem. The page cache subsystem reads and writes a file a page -** at a time and provides a journal for rollback. -*/ - -#ifndef SQLITE_PAGER_H -#define SQLITE_PAGER_H - -/* -** Default maximum size for persistent journal files. A negative -** value means no limit. This value may be overridden using the -** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit". -*/ -#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT - #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1 -#endif - -/* -** The type used to represent a page number. The first page in a file -** is called page 1. 0 is used to represent "not a page". -*/ -typedef u32 Pgno; - -/* -** Each open file is managed by a separate instance of the "Pager" structure. -*/ -typedef struct Pager Pager; - -/* -** Handle type for pages. -*/ -typedef struct PgHdr DbPage; - -/* -** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is -** reserved for working around a windows/posix incompatibility). It is -** used in the journal to signify that the remainder of the journal file -** is devoted to storing a master journal name - there are no more pages to -** roll back. See comments for function writeMasterJournal() in pager.c -** for details. -*/ -#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1)) - -/* -** Allowed values for the flags parameter to sqlite3PagerOpen(). -** -** NOTE: These values must match the corresponding BTREE_ values in btree.h. -*/ -#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */ -#define PAGER_MEMORY 0x0002 /* In-memory database */ - -/* -** Valid values for the second argument to sqlite3PagerLockingMode(). -*/ -#define PAGER_LOCKINGMODE_QUERY -1 -#define PAGER_LOCKINGMODE_NORMAL 0 -#define PAGER_LOCKINGMODE_EXCLUSIVE 1 - -/* -** Numeric constants that encode the journalmode. -** -** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY) -** are exposed in the API via the "PRAGMA journal_mode" command and -** therefore cannot be changed without a compatibility break. -*/ -#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ -#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ -#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */ -#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */ -#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */ -#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */ -#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ - -/* -** Flags that make up the mask passed to sqlite3PagerGet(). -*/ -#define PAGER_GET_NOCONTENT 0x01 /* Do not load data from disk */ -#define PAGER_GET_READONLY 0x02 /* Read-only page is acceptable */ - -/* -** Flags for sqlite3PagerSetFlags() -** -** Value constraints (enforced via assert()): -** PAGER_FULLFSYNC == SQLITE_FullFSync -** PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync -** PAGER_CACHE_SPILL == SQLITE_CacheSpill -*/ -#define PAGER_SYNCHRONOUS_OFF 0x01 /* PRAGMA synchronous=OFF */ -#define PAGER_SYNCHRONOUS_NORMAL 0x02 /* PRAGMA synchronous=NORMAL */ -#define PAGER_SYNCHRONOUS_FULL 0x03 /* PRAGMA synchronous=FULL */ -#define PAGER_SYNCHRONOUS_EXTRA 0x04 /* PRAGMA synchronous=EXTRA */ -#define PAGER_SYNCHRONOUS_MASK 0x07 /* Mask for four values above */ -#define PAGER_FULLFSYNC 0x08 /* PRAGMA fullfsync=ON */ -#define PAGER_CKPT_FULLFSYNC 0x10 /* PRAGMA checkpoint_fullfsync=ON */ -#define PAGER_CACHESPILL 0x20 /* PRAGMA cache_spill=ON */ -#define PAGER_FLAGS_MASK 0x38 /* All above except SYNCHRONOUS */ - -/* -** The remainder of this file contains the declarations of the functions -** that make up the Pager sub-system API. See source code comments for -** a detailed description of each routine. -*/ - -/* Open and close a Pager connection. */ -SQLITE_PRIVATE int sqlite3PagerOpen( - sqlite3_vfs*, - Pager **ppPager, - const char*, - int, - int, - int, - void(*)(DbPage*) -); -SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*); -SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*); - -/* Functions used to configure a Pager object. */ -SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *); -SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int); -#ifdef SQLITE_HAS_CODEC -SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*); -#endif -SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int); -SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int); -SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int); -SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64); -SQLITE_PRIVATE void sqlite3PagerShrink(Pager*); -SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned); -SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int); -SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int); -SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*); -SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*); -SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64); -SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*); -SQLITE_PRIVATE int sqlite3PagerFlush(Pager*); - -/* Functions used to obtain and release page references. */ -SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); -SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno); -SQLITE_PRIVATE void sqlite3PagerRef(DbPage*); -SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*); -SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*); -SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*); - -/* Operations on page references. */ -SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*); -SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*); -SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int); -SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*); -SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *); -SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *); - -/* Functions used to manage pager transactions and savepoints. */ -SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*); -SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int); -SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int); -SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*); -SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster); -SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*); -SQLITE_PRIVATE int sqlite3PagerRollback(Pager*); -SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n); -SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); -SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager); - -#ifndef SQLITE_OMIT_WAL -SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*); -SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen); -SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3*); -# ifdef SQLITE_DIRECT_OVERFLOW_READ -SQLITE_PRIVATE int sqlite3PagerUseWal(Pager *pPager, Pgno); -# endif -# ifdef SQLITE_ENABLE_SNAPSHOT -SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot); -SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot); -SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager); -# endif -#else -# define sqlite3PagerUseWal(x,y) 0 -#endif - -#ifdef SQLITE_ENABLE_ZIPVFS -SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager); -#endif - -/* Functions used to query pager state and configuration. */ -SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*); -SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*); -#ifdef SQLITE_DEBUG -SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*); -#endif -SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*); -SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int); -SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*); -SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*); -SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*); -SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*); -SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*); -SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*); -SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *); -SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*); -SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *); -#ifdef SQLITE_ENABLE_SETLK_TIMEOUT -SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager); -#else -# define sqlite3PagerResetLockTimeout(X) -#endif - -/* Functions used to truncate the database file. */ -SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno); - -SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16); - -#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL) -SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *); -#endif - -/* Functions to support testing and debugging. */ -#if !defined(NDEBUG) || defined(SQLITE_TEST) -SQLITE_PRIVATE Pgno sqlite3PagerPagenumber(DbPage*); -SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage*); -#endif -#ifdef SQLITE_TEST -SQLITE_PRIVATE int *sqlite3PagerStats(Pager*); -SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*); - void disable_simulated_io_errors(void); - void enable_simulated_io_errors(void); -#else -# define disable_simulated_io_errors() -# define enable_simulated_io_errors() -#endif - -#endif /* SQLITE_PAGER_H */ - -/************** End of pager.h ***********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ /************** Include pcache.h in the middle of sqliteInt.h ****************/ /************** Begin file pcache.h ******************************************/ /* @@ -15137,7 +16757,7 @@ SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*); ** ************************************************************************* ** This header file defines the interface that the sqlite page cache -** subsystem. +** subsystem. */ #ifndef _PCACHE_H_ @@ -15163,11 +16783,11 @@ struct PgHdr { u16 flags; /* PGHDR flags defined below */ /********************************************************************** - ** Elements above, except pCache, are public. All that follow are + ** Elements above, except pCache, are public. All that follow are ** private to pcache.c and should not be accessed by other modules. ** pCache is grouped with the public elements for efficiency. */ - i16 nRef; /* Number of users of this page */ + i64 nRef; /* Number of users of this page */ PgHdr *pDirtyNext; /* Next element in list of dirty pages */ PgHdr *pDirtyPrev; /* Previous element in list of dirty pages */ /* NB: pDirtyNext and pDirtyPrev are undefined if the @@ -15216,7 +16836,7 @@ SQLITE_PRIVATE int sqlite3PcacheSetPageSize(PCache *, int); SQLITE_PRIVATE int sqlite3PcacheSize(void); /* One release per successful fetch. Page is pinned until released. -** Reference counted. +** Reference counted. */ SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch(PCache*, Pgno, int createFlag); SQLITE_PRIVATE int sqlite3PcacheFetchStress(PCache*, Pgno, sqlite3_pcache_page**); @@ -15248,19 +16868,19 @@ SQLITE_PRIVATE void sqlite3PcacheClearSyncFlags(PCache *); SQLITE_PRIVATE void sqlite3PcacheClear(PCache*); /* Return the total number of outstanding page references */ -SQLITE_PRIVATE int sqlite3PcacheRefCount(PCache*); +SQLITE_PRIVATE i64 sqlite3PcacheRefCount(PCache*); /* Increment the reference count of an existing page */ SQLITE_PRIVATE void sqlite3PcacheRef(PgHdr*); -SQLITE_PRIVATE int sqlite3PcachePageRefcount(PgHdr*); +SQLITE_PRIVATE i64 sqlite3PcachePageRefcount(PgHdr*); /* Return the total number of pages stored in the cache */ SQLITE_PRIVATE int sqlite3PcachePagecount(PCache*); #if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) /* Iterate through all dirty pages currently stored in the cache. This -** interface is only available if SQLITE_CHECK_PAGES is defined when the +** interface is only available if SQLITE_CHECK_PAGES is defined when the ** library is built. */ SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *)); @@ -15310,288 +16930,14 @@ SQLITE_PRIVATE int sqlite3HeaderSizePcache1(void); /* Number of dirty pages as a percentage of the configured cache size */ SQLITE_PRIVATE int sqlite3PCachePercentDirty(PCache*); +#ifdef SQLITE_DIRECT_OVERFLOW_READ +SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache); +#endif + #endif /* _PCACHE_H_ */ /************** End of pcache.h **********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include os.h in the middle of sqliteInt.h ********************/ -/************** Begin file os.h **********************************************/ -/* -** 2001 September 16 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file (together with is companion C source-code file -** "os.c") attempt to abstract the underlying operating system so that -** the SQLite library will work on both POSIX and windows systems. -** -** This header file is #include-ed by sqliteInt.h and thus ends up -** being included by every source file. -*/ -#ifndef _SQLITE_OS_H_ -#define _SQLITE_OS_H_ - -/* -** Attempt to automatically detect the operating system and setup the -** necessary pre-processor macros for it. -*/ -/************** Include os_setup.h in the middle of os.h *********************/ -/************** Begin file os_setup.h ****************************************/ -/* -** 2013 November 25 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains pre-processor directives related to operating system -** detection and/or setup. -*/ -#ifndef SQLITE_OS_SETUP_H -#define SQLITE_OS_SETUP_H - -/* -** Figure out if we are dealing with Unix, Windows, or some other operating -** system. -** -** After the following block of preprocess macros, all of SQLITE_OS_UNIX, -** SQLITE_OS_WIN, and SQLITE_OS_OTHER will defined to either 1 or 0. One of -** the three will be 1. The other two will be 0. -*/ -#if defined(SQLITE_OS_OTHER) -# if SQLITE_OS_OTHER==1 -# undef SQLITE_OS_UNIX -# define SQLITE_OS_UNIX 0 -# undef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# else -# undef SQLITE_OS_OTHER -# endif -#endif -#if !defined(SQLITE_OS_UNIX) && !defined(SQLITE_OS_OTHER) -# define SQLITE_OS_OTHER 0 -# ifndef SQLITE_OS_WIN -# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || \ - defined(__MINGW32__) || defined(__BORLANDC__) -# define SQLITE_OS_WIN 1 -# define SQLITE_OS_UNIX 0 -# else -# define SQLITE_OS_WIN 0 -# define SQLITE_OS_UNIX 1 -# endif -# else -# define SQLITE_OS_UNIX 0 -# endif -#else -# ifndef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# endif -#endif - -#endif /* SQLITE_OS_SETUP_H */ - -/************** End of os_setup.h ********************************************/ -/************** Continuing where we left off in os.h *************************/ - -/* If the SET_FULLSYNC macro is not defined above, then make it -** a no-op -*/ -#ifndef SET_FULLSYNC -# define SET_FULLSYNC(x,y) -#endif - -/* -** The default size of a disk sector -*/ -#ifndef SQLITE_DEFAULT_SECTOR_SIZE -# define SQLITE_DEFAULT_SECTOR_SIZE 4096 -#endif - -/* -** Temporary files are named starting with this prefix followed by 16 random -** alphanumeric characters, and no file extension. They are stored in the -** OS's standard temporary file directory, and are deleted prior to exit. -** If sqlite is being embedded in another program, you may wish to change the -** prefix to reflect your program's name, so that if your program exits -** prematurely, old temporary files can be easily identified. This can be done -** using -DSQLITE_TEMP_FILE_PREFIX=myprefix_ on the compiler command line. -** -** 2006-10-31: The default prefix used to be "sqlite_". But then -** Mcafee started using SQLite in their anti-virus product and it -** started putting files with the "sqlite" name in the c:/temp folder. -** This annoyed many windows users. Those users would then do a -** Google search for "sqlite", find the telephone numbers of the -** developers and call to wake them up at night and complain. -** For this reason, the default name prefix is changed to be "sqlite" -** spelled backwards. So the temp files are still identified, but -** anybody smart enough to figure out the code is also likely smart -** enough to know that calling the developer will not help get rid -** of the file. -*/ -#ifndef SQLITE_TEMP_FILE_PREFIX -# define SQLITE_TEMP_FILE_PREFIX "etilqs_" -#endif - -/* -** The following values may be passed as the second argument to -** sqlite3OsLock(). The various locks exhibit the following semantics: -** -** SHARED: Any number of processes may hold a SHARED lock simultaneously. -** RESERVED: A single process may hold a RESERVED lock on a file at -** any time. Other processes may hold and obtain new SHARED locks. -** PENDING: A single process may hold a PENDING lock on a file at -** any one time. Existing SHARED locks may persist, but no new -** SHARED locks may be obtained by other processes. -** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks. -** -** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a -** process that requests an EXCLUSIVE lock may actually obtain a PENDING -** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to -** sqlite3OsLock(). -*/ -#define NO_LOCK 0 -#define SHARED_LOCK 1 -#define RESERVED_LOCK 2 -#define PENDING_LOCK 3 -#define EXCLUSIVE_LOCK 4 - -/* -** File Locking Notes: (Mostly about windows but also some info for Unix) -** -** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because -** those functions are not available. So we use only LockFile() and -** UnlockFile(). -** -** LockFile() prevents not just writing but also reading by other processes. -** A SHARED_LOCK is obtained by locking a single randomly-chosen -** byte out of a specific range of bytes. The lock byte is obtained at -** random so two separate readers can probably access the file at the -** same time, unless they are unlucky and choose the same lock byte. -** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range. -** There can only be one writer. A RESERVED_LOCK is obtained by locking -** a single byte of the file that is designated as the reserved lock byte. -** A PENDING_LOCK is obtained by locking a designated byte different from -** the RESERVED_LOCK byte. -** -** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available, -** which means we can use reader/writer locks. When reader/writer locks -** are used, the lock is placed on the same range of bytes that is used -** for probabilistic locking in Win95/98/ME. Hence, the locking scheme -** will support two or more Win95 readers or two or more WinNT readers. -** But a single Win95 reader will lock out all WinNT readers and a single -** WinNT reader will lock out all other Win95 readers. -** -** The following #defines specify the range of bytes used for locking. -** SHARED_SIZE is the number of bytes available in the pool from which -** a random byte is selected for a shared lock. The pool of bytes for -** shared locks begins at SHARED_FIRST. -** -** The same locking strategy and -** byte ranges are used for Unix. This leaves open the possibility of having -** clients on win95, winNT, and unix all talking to the same shared file -** and all locking correctly. To do so would require that samba (or whatever -** tool is being used for file sharing) implements locks correctly between -** windows and unix. I'm guessing that isn't likely to happen, but by -** using the same locking range we are at least open to the possibility. -** -** Locking in windows is manditory. For this reason, we cannot store -** actual data in the bytes used for locking. The pager never allocates -** the pages involved in locking therefore. SHARED_SIZE is selected so -** that all locks will fit on a single page even at the minimum page size. -** PENDING_BYTE defines the beginning of the locks. By default PENDING_BYTE -** is set high so that we don't have to allocate an unused page except -** for very large databases. But one should test the page skipping logic -** by setting PENDING_BYTE low and running the entire regression suite. -** -** Changing the value of PENDING_BYTE results in a subtly incompatible -** file format. Depending on how it is changed, you might not notice -** the incompatibility right away, even running a full regression test. -** The default location of PENDING_BYTE is the first byte past the -** 1GB boundary. -** -*/ -#ifdef SQLITE_OMIT_WSD -# define PENDING_BYTE (0x40000000) -#else -# define PENDING_BYTE sqlite3PendingByte -#endif -#define RESERVED_BYTE (PENDING_BYTE+1) -#define SHARED_FIRST (PENDING_BYTE+2) -#define SHARED_SIZE 510 - -/* -** Wrapper around OS specific sqlite3_os_init() function. -*/ -SQLITE_PRIVATE int sqlite3OsInit(void); - -/* -** Functions for accessing sqlite3_file methods -*/ -SQLITE_PRIVATE void sqlite3OsClose(sqlite3_file*); -SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset); -SQLITE_PRIVATE int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset); -SQLITE_PRIVATE int sqlite3OsTruncate(sqlite3_file*, i64 size); -SQLITE_PRIVATE int sqlite3OsSync(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsFileSize(sqlite3_file*, i64 *pSize); -SQLITE_PRIVATE int sqlite3OsLock(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut); -SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file*,int,void*); -SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file*,int,void*); -#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0 -SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id); -SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id); -#ifndef SQLITE_OMIT_WAL -SQLITE_PRIVATE int sqlite3OsShmMap(sqlite3_file *,int,int,int,void volatile **); -SQLITE_PRIVATE int sqlite3OsShmLock(sqlite3_file *id, int, int, int); -SQLITE_PRIVATE void sqlite3OsShmBarrier(sqlite3_file *id); -SQLITE_PRIVATE int sqlite3OsShmUnmap(sqlite3_file *id, int); -#endif /* SQLITE_OMIT_WAL */ -SQLITE_PRIVATE int sqlite3OsFetch(sqlite3_file *id, i64, int, void **); -SQLITE_PRIVATE int sqlite3OsUnfetch(sqlite3_file *, i64, void *); - - -/* -** Functions for accessing sqlite3_vfs methods -*/ -SQLITE_PRIVATE int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *); -SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *, const char *, int); -SQLITE_PRIVATE int sqlite3OsAccess(sqlite3_vfs *, const char *, int, int *pResOut); -SQLITE_PRIVATE int sqlite3OsFullPathname(sqlite3_vfs *, const char *, int, char *); -#ifndef SQLITE_OMIT_LOAD_EXTENSION -SQLITE_PRIVATE void *sqlite3OsDlOpen(sqlite3_vfs *, const char *); -SQLITE_PRIVATE void sqlite3OsDlError(sqlite3_vfs *, int, char *); -SQLITE_PRIVATE void (*sqlite3OsDlSym(sqlite3_vfs *, void *, const char *))(void); -SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *, void *); -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ -SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *, int, char *); -SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *, int); -SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs*); -SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); - -/* -** Convenience functions for opening and closing files using -** sqlite3_malloc() to obtain space for the file-handle structure. -*/ -SQLITE_PRIVATE int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*); -SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); - -#endif /* _SQLITE_OS_H_ */ - -/************** End of os.h **************************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ /************** Include mutex.h in the middle of sqliteInt.h *****************/ /************** Begin file mutex.h *******************************************/ /* @@ -15652,9 +16998,9 @@ SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); */ #define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8) #define sqlite3_mutex_free(X) -#define sqlite3_mutex_enter(X) +#define sqlite3_mutex_enter(X) #define sqlite3_mutex_try(X) SQLITE_OK -#define sqlite3_mutex_leave(X) +#define sqlite3_mutex_leave(X) #define sqlite3_mutex_held(X) ((void)(X),1) #define sqlite3_mutex_notheld(X) ((void)(X),1) #define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8) @@ -15663,6 +17009,7 @@ SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); #define MUTEX_LOGIC(X) #else #define MUTEX_LOGIC(X) X +SQLITE_API int sqlite3_mutex_held(sqlite3_mutex*); #endif /* defined(SQLITE_MUTEX_OMIT) */ /************** End of mutex.h ***********************************************/ @@ -15679,7 +17026,7 @@ SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); /* ** Default synchronous levels. ** -** Note that (for historcal reasons) the PAGER_SYNCHRONOUS_* macros differ +** Note that (for historical reasons) the PAGER_SYNCHRONOUS_* macros differ ** from the SQLITE_DEFAULT_SYNCHRONOUS value by 1. ** ** PAGER_SYNCHRONOUS DEFAULT_SYNCHRONOUS @@ -15718,7 +17065,7 @@ struct Db { ** An instance of the following structure stores a database schema. ** ** Most Schema objects are associated with a Btree. The exception is -** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing. +** the Schema for the TEMP database (sqlite3.aDb[1]) which is free-standing. ** In shared cache mode, a single Schema object can be shared by multiple ** Btrees that refer to the same underlying BtShared object. ** @@ -15766,7 +17113,6 @@ struct Schema { */ #define DB_SchemaLoaded 0x0001 /* The schema has been loaded */ #define DB_UnresetViews 0x0002 /* Some views have defined column names */ -#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */ #define DB_ResetWanted 0x0008 /* Reset the schema when nSchemaLock==0 */ /* @@ -15794,33 +17140,79 @@ struct Schema { ** is shared by multiple database connections. Therefore, while parsing ** schema information, the Lookaside.bEnabled flag is cleared so that ** lookaside allocations are not used to construct the schema objects. +** +** New lookaside allocations are only allowed if bDisable==0. When +** bDisable is greater than zero, sz is set to zero which effectively +** disables lookaside without adding a new test for the bDisable flag +** in a performance-critical path. sz should be set by to szTrue whenever +** bDisable changes back to zero. +** +** Lookaside buffers are initially held on the pInit list. As they are +** used and freed, they are added back to the pFree list. New allocations +** come off of pFree first, then pInit as a fallback. This dual-list +** allows use to compute a high-water mark - the maximum number of allocations +** outstanding at any point in the past - by subtracting the number of +** allocations on the pInit list from the total number of allocations. +** +** Enhancement on 2019-12-12: Two-size-lookaside +** The default lookaside configuration is 100 slots of 1200 bytes each. +** The larger slot sizes are important for performance, but they waste +** a lot of space, as most lookaside allocations are less than 128 bytes. +** The two-size-lookaside enhancement breaks up the lookaside allocation +** into two pools: One of 128-byte slots and the other of the default size +** (1200-byte) slots. Allocations are filled from the small-pool first, +** failing over to the full-size pool if that does not work. Thus more +** lookaside slots are available while also using less memory. +** This enhancement can be omitted by compiling with +** SQLITE_OMIT_TWOSIZE_LOOKASIDE. */ struct Lookaside { u32 bDisable; /* Only operate the lookaside when zero */ u16 sz; /* Size of each buffer in bytes */ + u16 szTrue; /* True value of sz, even if disabled */ u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ u32 nSlot; /* Number of lookaside slots allocated */ u32 anStat[3]; /* 0: hits. 1: size misses. 2: full misses */ LookasideSlot *pInit; /* List of buffers not previously used */ LookasideSlot *pFree; /* List of available buffers */ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + LookasideSlot *pSmallInit; /* List of small buffers not previously used */ + LookasideSlot *pSmallFree; /* List of available small buffers */ + void *pMiddle; /* First byte past end of full-size buffers and + ** the first byte of LOOKASIDE_SMALL buffers */ +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ void *pStart; /* First byte of available memory space */ void *pEnd; /* First byte past end of available space */ + void *pTrueEnd; /* True value of pEnd, when db->pnBytesFreed!=0 */ }; struct LookasideSlot { LookasideSlot *pNext; /* Next buffer in the list of free buffers */ }; +#define DisableLookaside db->lookaside.bDisable++;db->lookaside.sz=0 +#define EnableLookaside db->lookaside.bDisable--;\ + db->lookaside.sz=db->lookaside.bDisable?0:db->lookaside.szTrue + +/* Size of the smaller allocations in two-size lookaside */ +#ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE +# define LOOKASIDE_SMALL 0 +#else +# define LOOKASIDE_SMALL 128 +#endif + /* ** A hash table for built-in function definitions. (Application-defined ** functions use a regular table table from hash.h.) ** ** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. -** Collisions are on the FuncDef.u.pHash chain. +** Collisions are on the FuncDef.u.pHash chain. Use the SQLITE_FUNC_HASH() +** macro to compute a hash on the function name. */ #define SQLITE_FUNC_HASH_SZ 23 struct FuncDefHash { FuncDef *a[SQLITE_FUNC_HASH_SZ]; /* Hash table for functions */ }; +#define SQLITE_FUNC_HASH(C,L) (((C)+(L))%SQLITE_FUNC_HASH_SZ) #ifdef SQLITE_USER_AUTHENTICATION /* @@ -15864,11 +17256,19 @@ SQLITE_PRIVATE void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**); /* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing ** in the style of sqlite3_trace() */ -#define SQLITE_TRACE_LEGACY 0x80 +#define SQLITE_TRACE_LEGACY 0x40 /* Use the legacy xTrace */ +#define SQLITE_TRACE_XPROFILE 0x80 /* Use the legacy xProfile */ #else -#define SQLITE_TRACE_LEGACY 0 +#define SQLITE_TRACE_LEGACY 0 +#define SQLITE_TRACE_XPROFILE 0 #endif /* SQLITE_OMIT_DEPRECATED */ +#define SQLITE_TRACE_NONLEGACY_MASK 0x0f /* Normal flags */ +/* +** Maximum number of sqlite3.aDb[] entries. This is the number of attached +** databases plus 2 for "main" and "temp". +*/ +#define SQLITE_MAX_DB (SQLITE_MAX_ATTACHED+2) /* ** Each database connection is an instance of the following structure. @@ -15876,20 +17276,21 @@ SQLITE_PRIVATE void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**); struct sqlite3 { sqlite3_vfs *pVfs; /* OS Interface */ struct Vdbe *pVdbe; /* List of active virtual machines */ - CollSeq *pDfltColl; /* The default collating sequence (BINARY) */ + CollSeq *pDfltColl; /* BINARY collseq for the database encoding */ sqlite3_mutex *mutex; /* Connection mutex */ Db *aDb; /* All backends */ int nDb; /* Number of backends currently in use */ u32 mDbFlags; /* flags recording internal state */ - u32 flags; /* flags settable by pragmas. See below */ + u64 flags; /* flags settable by pragmas. See below */ i64 lastRowid; /* ROWID of most recent insert (see above) */ i64 szMmap; /* Default mmap_size setting */ u32 nSchemaLock; /* Do not reset the schema when non-zero */ unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ int errCode; /* Most recent error code (SQLITE_*) */ + int errByteOffset; /* Byte offset of error in SQL statement */ int errMask; /* & result codes with this before returning */ int iSysErrno; /* Errno value from last system error */ - u16 dbOptFlags; /* Flags to enable/disable optimizations */ + u32 dbOptFlags; /* Flags to enable/disable optimizations */ u8 enc; /* Text encoding */ u8 autoCommit; /* The auto-commit flag. */ u8 temp_store; /* 1: file 2: memory 0: default */ @@ -15903,19 +17304,20 @@ struct sqlite3 { u8 mTrace; /* zero or more SQLITE_TRACE flags */ u8 noSharedCache; /* True if no shared-cache backends */ u8 nSqlExec; /* Number of pending OP_SqlExec opcodes */ + u8 eOpenState; /* Current condition of the connection */ int nextPagesize; /* Pagesize after VACUUM if >0 */ - u32 magic; /* Magic number for detect library misuse */ - int nChange; /* Value returned by sqlite3_changes() */ - int nTotalChange; /* Value returned by sqlite3_total_changes() */ + i64 nChange; /* Value returned by sqlite3_changes() */ + i64 nTotalChange; /* Value returned by sqlite3_total_changes() */ int aLimit[SQLITE_N_LIMIT]; /* Limits */ int nMaxSorterMmap; /* Maximum size of regions mapped by sorter */ struct sqlite3InitInfo { /* Information used during initialization */ - int newTnum; /* Rootpage of table being initialized */ + Pgno newTnum; /* Rootpage of table being initialized */ u8 iDb; /* Which db file is being initialized */ u8 busy; /* TRUE if currently initializing */ unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */ unsigned imposterTable : 1; /* Building an imposter table */ unsigned reopenMemdb : 1; /* ATTACH is really a reopen using MemDB */ + const char **azInit; /* "type", "name", and "tbl_name" columns */ } init; int nVdbeActive; /* Number of VDBEs currently running */ int nVdbeRead; /* Number of active VDBEs that read or write */ @@ -15924,16 +17326,25 @@ struct sqlite3 { int nVDestroy; /* Number of active OP_VDestroy operations */ int nExtension; /* Number of loaded extensions */ void **aExtension; /* Array of shared library handles */ - int (*xTrace)(u32,void*,void*,void*); /* Trace function */ - void *pTraceArg; /* Argument to the trace function */ + union { + void (*xLegacy)(void*,const char*); /* mTrace==SQLITE_TRACE_LEGACY */ + int (*xV2)(u32,void*,void*,void*); /* All other mTrace values */ + } trace; + void *pTraceArg; /* Argument to the trace function */ +#ifndef SQLITE_OMIT_DEPRECATED void (*xProfile)(void*,const char*,u64); /* Profiling function */ void *pProfileArg; /* Argument to profile function */ +#endif void *pCommitArg; /* Argument to xCommitCallback() */ int (*xCommitCallback)(void*); /* Invoked at every commit. */ void *pRollbackArg; /* Argument to xRollbackCallback() */ void (*xRollbackCallback)(void*); /* Invoked at every commit. */ void *pUpdateArg; void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); + void *pAutovacPagesArg; /* Client argument to autovac_pages */ + void (*xAutovacDestr)(void*); /* Destructor for pAutovacPAgesArg */ + unsigned int (*xAutovacPages)(void*,const char*,u32,u32,u32); + Parse *pParse; /* Current parse */ #ifdef SQLITE_ENABLE_PREUPDATE_HOOK void *pPreUpdateArg; /* First argument to xPreUpdateCallback */ void (*xPreUpdateCallback)( /* Registered using sqlite3_preupdate_hook() */ @@ -15975,6 +17386,7 @@ struct sqlite3 { BusyHandler busyHandler; /* Busy callback */ Db aDbStatic[2]; /* Static space for the 2 default backends */ Savepoint *pSavepoint; /* List of active savepoints */ + int nAnalysisLimit; /* Number of index rows to ANALYZE */ int busyTimeout; /* Busy handler timeout, in msec */ int nSavepoint; /* Number of non-transaction savepoints */ int nStatement; /* Number of nested statement-transactions */ @@ -15982,7 +17394,7 @@ struct sqlite3 { i64 nDeferredImmCons; /* Net deferred immediate constraints */ int *pnBytesFreed; /* If not NULL, increment this in DbFree() */ #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - /* The following variables are all protected by the STATIC_MASTER + /* The following variables are all protected by the STATIC_MAIN ** mutex, not by sqlite3.mutex. They are used by code in notify.c. ** ** When X.pUnlockConnection==Y, that means that X is waiting for Y to @@ -16009,6 +17421,13 @@ struct sqlite3 { #define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc) #define ENC(db) ((db)->enc) +/* +** A u64 constant where the lower 32 bits are all zeros. Only the +** upper 32 bits are included in the argument. Necessary because some +** C-compilers still do not accept LL integer literals. +*/ +#define HI(X) ((u64)(X)<<32) + /* ** Possible values for the sqlite3.flags. ** @@ -16017,20 +17436,19 @@ struct sqlite3 { ** SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC ** SQLITE_CacheSpill == PAGER_CACHE_SPILL */ -#define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_MASTER */ +#define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_SCHEMA */ #define SQLITE_LegacyFileFmt 0x00000002 /* Create new databases in format 1 */ #define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */ #define SQLITE_FullFSync 0x00000008 /* Use full fsync on the backend */ #define SQLITE_CkptFullFSync 0x00000010 /* Use full fsync for checkpoint */ #define SQLITE_CacheSpill 0x00000020 /* OK to spill pager cache */ #define SQLITE_ShortColNames 0x00000040 /* Show short columns names */ -#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */ - /* DELETE, or UPDATE and return */ - /* the count using a callback. */ +#define SQLITE_TrustedSchema 0x00000080 /* Allow unsafe functions and + ** vtabs in the schema definition */ #define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */ /* result set is empty */ #define SQLITE_IgnoreChecks 0x00000200 /* Do not enforce check constraints */ -#define SQLITE_ReadUncommit 0x00000400 /* READ UNCOMMITTED in shared-cache */ +#define SQLITE_StmtScanStatus 0x00000400 /* Enable stmt_scanstats() counters */ #define SQLITE_NoCkptOnClose 0x00000800 /* No checkpoint on close()/DETACH */ #define SQLITE_ReverseOrder 0x00001000 /* Reverse unordered SELECTs */ #define SQLITE_RecTriggers 0x00002000 /* Enable recursive triggers */ @@ -16046,14 +17464,26 @@ struct sqlite3 { #define SQLITE_EnableQPSG 0x00800000 /* Query Planner Stability Guarantee*/ #define SQLITE_TriggerEQP 0x01000000 /* Show trigger EXPLAIN QUERY PLAN */ #define SQLITE_ResetDatabase 0x02000000 /* Reset the database */ +#define SQLITE_LegacyAlter 0x04000000 /* Legacy ALTER TABLE behaviour */ +#define SQLITE_NoSchemaError 0x08000000 /* Do not report schema parse errors*/ +#define SQLITE_Defensive 0x10000000 /* Input SQL is likely hostile */ +#define SQLITE_DqsDDL 0x20000000 /* dbl-quoted strings allowed in DDL*/ +#define SQLITE_DqsDML 0x40000000 /* dbl-quoted strings allowed in DML*/ +#define SQLITE_EnableView 0x80000000 /* Enable the use of views */ +#define SQLITE_CountRows HI(0x00001) /* Count rows changed by INSERT, */ + /* DELETE, or UPDATE and return */ + /* the count using a callback. */ +#define SQLITE_CorruptRdOnly HI(0x00002) /* Prohibit writes due to error */ +#define SQLITE_ReadUncommit HI(0x00004) /* READ UNCOMMITTED in shared-cache */ /* Flags used only if debugging */ #ifdef SQLITE_DEBUG -#define SQLITE_SqlTrace 0x08000000 /* Debug print SQL as it executes */ -#define SQLITE_VdbeListing 0x10000000 /* Debug listings of VDBE programs */ -#define SQLITE_VdbeTrace 0x20000000 /* True to trace VDBE execution */ -#define SQLITE_VdbeAddopTrace 0x40000000 /* Trace sqlite3VdbeAddOp() calls */ -#define SQLITE_VdbeEQP 0x80000000 /* Debug EXPLAIN QUERY PLAN */ +#define SQLITE_SqlTrace HI(0x0100000) /* Debug print SQL as it executes */ +#define SQLITE_VdbeListing HI(0x0200000) /* Debug listings of VDBE progs */ +#define SQLITE_VdbeTrace HI(0x0400000) /* True to trace VDBE execution */ +#define SQLITE_VdbeAddopTrace HI(0x0800000) /* Trace sqlite3VdbeAddOp() calls */ +#define SQLITE_VdbeEQP HI(0x1000000) /* Debug EXPLAIN QUERY PLAN */ +#define SQLITE_ParserTrace HI(0x2000000) /* PRAGMA parser_trace=ON */ #endif /* @@ -16062,29 +17492,48 @@ struct sqlite3 { #define DBFLAG_SchemaChange 0x0001 /* Uncommitted Hash table changes */ #define DBFLAG_PreferBuiltin 0x0002 /* Preference to built-in funcs */ #define DBFLAG_Vacuum 0x0004 /* Currently in a VACUUM */ -#define DBFLAG_SchemaKnownOk 0x0008 /* Schema is known to be valid */ +#define DBFLAG_VacuumInto 0x0008 /* Currently running VACUUM INTO */ +#define DBFLAG_SchemaKnownOk 0x0010 /* Schema is known to be valid */ +#define DBFLAG_InternalFunc 0x0020 /* Allow use of internal functions */ +#define DBFLAG_EncodingFixed 0x0040 /* No longer possible to change enc. */ /* ** Bits of the sqlite3.dbOptFlags field that are used by the ** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface to ** selectively disable various optimizations. */ -#define SQLITE_QueryFlattener 0x0001 /* Query flattening */ -#define SQLITE_ColumnCache 0x0002 /* Column cache */ -#define SQLITE_GroupByOrder 0x0004 /* GROUPBY cover of ORDERBY */ -#define SQLITE_FactorOutConst 0x0008 /* Constant factoring */ -#define SQLITE_DistinctOpt 0x0010 /* DISTINCT using indexes */ -#define SQLITE_CoverIdxScan 0x0020 /* Covering index scans */ -#define SQLITE_OrderByIdxJoin 0x0040 /* ORDER BY of joins via index */ -#define SQLITE_Transitive 0x0080 /* Transitive constraints */ -#define SQLITE_OmitNoopJoin 0x0100 /* Omit unused tables in joins */ -#define SQLITE_CountOfView 0x0200 /* The count-of-view optimization */ -#define SQLITE_CursorHints 0x0400 /* Add OP_CursorHint opcodes */ -#define SQLITE_Stat34 0x0800 /* Use STAT3 or STAT4 data */ - /* TH3 expects the Stat34 ^^^^^^ value to be 0x0800. Don't change it */ -#define SQLITE_PushDown 0x1000 /* The push-down optimization */ -#define SQLITE_SimplifyJoin 0x2000 /* Convert LEFT JOIN to JOIN */ -#define SQLITE_AllOpts 0xffff /* All optimizations */ +#define SQLITE_QueryFlattener 0x00000001 /* Query flattening */ +#define SQLITE_WindowFunc 0x00000002 /* Use xInverse for window functions */ +#define SQLITE_GroupByOrder 0x00000004 /* GROUPBY cover of ORDERBY */ +#define SQLITE_FactorOutConst 0x00000008 /* Constant factoring */ +#define SQLITE_DistinctOpt 0x00000010 /* DISTINCT using indexes */ +#define SQLITE_CoverIdxScan 0x00000020 /* Covering index scans */ +#define SQLITE_OrderByIdxJoin 0x00000040 /* ORDER BY of joins via index */ +#define SQLITE_Transitive 0x00000080 /* Transitive constraints */ +#define SQLITE_OmitNoopJoin 0x00000100 /* Omit unused tables in joins */ +#define SQLITE_CountOfView 0x00000200 /* The count-of-view optimization */ +#define SQLITE_CursorHints 0x00000400 /* Add OP_CursorHint opcodes */ +#define SQLITE_Stat4 0x00000800 /* Use STAT4 data */ + /* TH3 expects this value ^^^^^^^^^^ to be 0x0000800. Don't change it */ +#define SQLITE_PushDown 0x00001000 /* The push-down optimization */ +#define SQLITE_SimplifyJoin 0x00002000 /* Convert LEFT JOIN to JOIN */ +#define SQLITE_SkipScan 0x00004000 /* Skip-scans */ +#define SQLITE_PropagateConst 0x00008000 /* The constant propagation opt */ +#define SQLITE_MinMaxOpt 0x00010000 /* The min/max optimization */ +#define SQLITE_SeekScan 0x00020000 /* The OP_SeekScan optimization */ +#define SQLITE_OmitOrderBy 0x00040000 /* Omit pointless ORDER BY */ + /* TH3 expects this value ^^^^^^^^^^ to be 0x40000. Coordinate any change */ +#define SQLITE_BloomFilter 0x00080000 /* Use a Bloom filter on searches */ +#define SQLITE_BloomPulldown 0x00100000 /* Run Bloom filters early */ +#define SQLITE_BalancedMerge 0x00200000 /* Balance multi-way merges */ +#define SQLITE_ReleaseReg 0x00400000 /* Use OP_ReleaseReg for testing */ +#define SQLITE_FlttnUnionAll 0x00800000 /* Disable the UNION ALL flattener */ + /* TH3 expects this value ^^^^^^^^^^ See flatten04.test */ +#define SQLITE_IndexedExpr 0x01000000 /* Pull exprs from index when able */ +#define SQLITE_Coroutines 0x02000000 /* Co-routines for subqueries */ +#define SQLITE_NullUnusedCols 0x04000000 /* NULL unused columns in subqueries */ +#define SQLITE_OnePass 0x08000000 /* Single-pass DELETE and UPDATE */ +#define SQLITE_AllOpts 0xffffffff /* All optimizations */ /* ** Macros for testing whether or not optimizations are enabled or disabled. @@ -16098,17 +17547,16 @@ struct sqlite3 { */ #define ConstFactorOk(P) ((P)->okConstFactor) -/* -** Possible values for the sqlite.magic field. -** The numbers are obtained at random and have no special meaning, other -** than being distinct from one another. +/* Possible values for the sqlite3.eOpenState field. +** The numbers are randomly selected such that a minimum of three bits must +** change to convert any number to another or to zero */ -#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */ -#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */ -#define SQLITE_MAGIC_SICK 0x4b771290 /* Error and awaiting close */ -#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */ -#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */ -#define SQLITE_MAGIC_ZOMBIE 0x64cffc7f /* Close with last statement close */ +#define SQLITE_STATE_OPEN 0x76 /* Database is open */ +#define SQLITE_STATE_CLOSED 0xce /* Database is closed */ +#define SQLITE_STATE_SICK 0xba /* Error and awaiting close */ +#define SQLITE_STATE_BUSY 0x6d /* Database currently in use */ +#define SQLITE_STATE_ERROR 0xd5 /* An SQLITE_MISUSE error occurred */ +#define SQLITE_STATE_ZOMBIE 0xa7 /* Close with last statement close */ /* ** Each SQL function is defined by an instance of the following @@ -16122,16 +17570,18 @@ struct sqlite3 { */ struct FuncDef { i8 nArg; /* Number of arguments. -1 means unlimited */ - u16 funcFlags; /* Some combination of SQLITE_FUNC_* */ + u32 funcFlags; /* Some combination of SQLITE_FUNC_* */ void *pUserData; /* User data parameter */ FuncDef *pNext; /* Next function with same name */ void (*xSFunc)(sqlite3_context*,int,sqlite3_value**); /* func or agg-step */ void (*xFinalize)(sqlite3_context*); /* Agg finalizer */ + void (*xValue)(sqlite3_context*); /* Current agg value */ + void (*xInverse)(sqlite3_context*,int,sqlite3_value**); /* inverse agg-step */ const char *zName; /* SQL name of the function. */ union { FuncDef *pHash; /* Next with a different name but the same hash */ FuncDestructor *pDestructor; /* Reference counted destructor function */ - } u; + } u; /* pHash if SQLITE_FUNC_BUILTIN, pDestructor otherwise */ }; /* @@ -16161,11 +17611,21 @@ struct FuncDestructor { ** are assert() statements in the code to verify this. ** ** Value constraints (enforced via assert()): -** SQLITE_FUNC_MINMAX == NC_MinMaxAgg == SF_MinMaxAgg -** SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG -** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG -** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API +** SQLITE_FUNC_MINMAX == NC_MinMaxAgg == SF_MinMaxAgg +** SQLITE_FUNC_ANYORDER == NC_OrderAgg == SF_OrderByReqd +** SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG +** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG +** SQLITE_FUNC_BYTELEN == OPFLAG_BYTELENARG +** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API +** SQLITE_FUNC_DIRECT == SQLITE_DIRECTONLY from the API +** SQLITE_FUNC_UNSAFE == SQLITE_INNOCUOUS -- opposite meanings!!! ** SQLITE_FUNC_ENCMASK depends on SQLITE_UTF* macros in the API +** +** Note that even though SQLITE_FUNC_UNSAFE and SQLITE_INNOCUOUS have the +** same bit value, their meanings are inverted. SQLITE_FUNC_UNSAFE is +** used internally and if set means that the function has side effects. +** SQLITE_INNOCUOUS is used by application code and means "not unsafe". +** See multiple instances of tag-20230109-1. */ #define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ #define SQLITE_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ @@ -16174,15 +17634,34 @@ struct FuncDestructor { #define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/ #define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */ #define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */ +#define SQLITE_FUNC_BYTELEN 0x00c0 /* Built-in octet_length() function */ #define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */ +/* 0x0200 -- available for reuse */ #define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */ #define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */ #define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ #define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a ** single query - might change over time */ -#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */ -#define SQLITE_FUNC_OFFSET 0x8000 /* Built-in sqlite_offset() function */ +#define SQLITE_FUNC_TEST 0x4000 /* Built-in testing functions */ +/* 0x8000 -- available for reuse */ +#define SQLITE_FUNC_WINDOW 0x00010000 /* Built-in window-only function */ +#define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */ +#define SQLITE_FUNC_DIRECT 0x00080000 /* Not for use in TRIGGERs or VIEWs */ +#define SQLITE_FUNC_SUBTYPE 0x00100000 /* Result likely to have sub-type */ +#define SQLITE_FUNC_UNSAFE 0x00200000 /* Function has side effects */ +#define SQLITE_FUNC_INLINE 0x00400000 /* Functions implemented in-line */ +#define SQLITE_FUNC_BUILTIN 0x00800000 /* This is a built-in function */ +#define SQLITE_FUNC_ANYORDER 0x08000000 /* count/min/max aggregate */ + +/* Identifier numbers for each in-line function */ +#define INLINEFUNC_coalesce 0 +#define INLINEFUNC_implies_nonnull_row 1 +#define INLINEFUNC_expr_implies_expr 2 +#define INLINEFUNC_expr_compare 3 +#define INLINEFUNC_affinity 4 +#define INLINEFUNC_iif 5 +#define INLINEFUNC_sqlite_offset 6 +#define INLINEFUNC_unlikely 99 /* Default case */ /* ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are @@ -16198,6 +17677,22 @@ struct FuncDestructor { ** VFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag. ** +** SFUNCTION(zName, nArg, iArg, bNC, xFunc) +** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and +** adds the SQLITE_DIRECTONLY flag. +** +** INLINE_FUNC(zName, nArg, iFuncId, mFlags) +** zName is the name of a function that is implemented by in-line +** byte code rather than by the usual callbacks. The iFuncId +** parameter determines the function id. The mFlags parameter is +** optional SQLITE_FUNC_ flags for this function. +** +** TEST_FUNC(zName, nArg, iFuncId, mFlags) +** zName is the name of a test-only function implemented by in-line +** byte code rather than by the usual callbacks. The iFuncId +** parameter determines the function id. The mFlags parameter is +** optional SQLITE_FUNC_ flags for this function. +** ** DFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and ** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions @@ -16205,10 +17700,13 @@ struct FuncDestructor { ** a single query. The iArg is ignored. The user-data is always set ** to a NULL pointer. The bNC parameter is not used. ** +** MFUNCTION(zName, nArg, xPtr, xFunc) +** For math-library functions. xPtr is an arbitrary pointer. +** ** PURE_DATE(zName, nArg, iArg, bNC, xFunc) ** Used for "pure" date/time functions, this macro is like DFUNCTION ** except that it does set the SQLITE_FUNC_CONSTANT flags. iArg is -** ignored and the user-data for these functions is set to an +** ignored and the user-data for these functions is set to an ** arbitrary non-NULL pointer. The bNC parameter is not used. ** ** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) @@ -16217,6 +17715,12 @@ struct FuncDestructor { ** are interpreted in the same way as the first 4 parameters to ** FUNCTION(). ** +** WAGGREGATE(zName, nArg, iArg, xStep, xFinal, xValue, xInverse) +** Used to create an aggregate function definition implemented by +** the C functions xStep and xFinal. The first four parameters +** are interpreted in the same way as the first 4 parameters to +** FUNCTION(). +** ** LIKEFUNC(zName, nArg, pArg, flags) ** Used to create a scalar function definition of a function zName ** that accepts nArg arguments and is implemented by a call to C @@ -16226,32 +17730,57 @@ struct FuncDestructor { ** parameter. */ #define FUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } +#define SFUNCTION(zName, nArg, iArg, bNC, xFunc) \ + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|SQLITE_DIRECTONLY|SQLITE_FUNC_UNSAFE, \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } +#define MFUNCTION(zName, nArg, xPtr, xFunc) \ + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_CONSTANT|SQLITE_UTF8, \ + xPtr, 0, xFunc, 0, 0, 0, #zName, {0} } +#define JFUNCTION(zName, nArg, iArg, xFunc) \ + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_DETERMINISTIC|\ + SQLITE_FUNC_CONSTANT|SQLITE_UTF8, \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } +#define INLINE_FUNC(zName, nArg, iArg, mFlags) \ + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_UTF8|SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \ + SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} } +#define TEST_FUNC(zName, nArg, iArg, mFlags) \ + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_UTF8|SQLITE_FUNC_INTERNAL|SQLITE_FUNC_TEST| \ + SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \ + SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} } #define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \ - 0, 0, xFunc, 0, #zName, {0} } + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \ + 0, 0, xFunc, 0, 0, 0, #zName, {0} } #define PURE_DATE(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ - (void*)&sqlite3Config, 0, xFunc, 0, #zName, {0} } + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ + (void*)&sqlite3Config, 0, xFunc, 0, 0, 0, #zName, {0} } #define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ - {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - pArg, 0, xFunc, 0, #zName, } + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + pArg, 0, xFunc, 0, 0, 0, #zName, } #define LIKEFUNC(zName, nArg, arg, flags) \ - {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \ - (void *)arg, 0, likeFunc, 0, #zName, {0} } -#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \ - {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {0}} -#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \ - {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \ - SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {0}} + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \ + (void *)arg, 0, likeFunc, 0, 0, 0, #zName, {0} } +#define WAGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue, xInverse, f) \ + {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|f, \ + SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,xInverse,#zName, {0}} +#define INTERNAL_FUNCTION(zName, nArg, xFunc) \ + {nArg, SQLITE_FUNC_BUILTIN|\ + SQLITE_FUNC_INTERNAL|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ + 0, 0, xFunc, 0, 0, 0, #zName, {0} } + /* ** All current savepoints are stored in a linked list starting at @@ -16283,32 +17812,84 @@ struct Savepoint { struct Module { const sqlite3_module *pModule; /* Callback pointers */ const char *zName; /* Name passed to create_module() */ + int nRefModule; /* Number of pointers to this object */ void *pAux; /* pAux passed to create_module() */ void (*xDestroy)(void *); /* Module destructor function */ Table *pEpoTab; /* Eponymous table for this module */ }; /* -** information about each column of an SQL table is held in an instance -** of this structure. +** Information about each column of an SQL table is held in an instance +** of the Column structure, in the Table.aCol[] array. +** +** Definitions: +** +** "table column index" This is the index of the column in the +** Table.aCol[] array, and also the index of +** the column in the original CREATE TABLE stmt. +** +** "storage column index" This is the index of the column in the +** record BLOB generated by the OP_MakeRecord +** opcode. The storage column index is less than +** or equal to the table column index. It is +** equal if and only if there are no VIRTUAL +** columns to the left. +** +** Notes on zCnName: +** The zCnName field stores the name of the column, the datatype of the +** column, and the collating sequence for the column, in that order, all in +** a single allocation. Each string is 0x00 terminated. The datatype +** is only included if the COLFLAG_HASTYPE bit of colFlags is set and the +** collating sequence name is only included if the COLFLAG_HASCOLL bit is +** set. */ struct Column { - char *zName; /* Name of this column, \000, then the type */ - Expr *pDflt; /* Default value of this column */ - char *zColl; /* Collating sequence. If NULL, use the default */ - u8 notNull; /* An OE_ code for handling a NOT NULL constraint */ - char affinity; /* One of the SQLITE_AFF_... values */ - u8 szEst; /* Estimated size of value in this column. sizeof(INT)==1 */ - u8 colFlags; /* Boolean properties. See COLFLAG_ defines below */ + char *zCnName; /* Name of this column */ + unsigned notNull :4; /* An OE_ code for handling a NOT NULL constraint */ + unsigned eCType :4; /* One of the standard types */ + char affinity; /* One of the SQLITE_AFF_... values */ + u8 szEst; /* Est size of value in this column. sizeof(INT)==1 */ + u8 hName; /* Column name hash for faster lookup */ + u16 iDflt; /* 1-based index of DEFAULT. 0 means "none" */ + u16 colFlags; /* Boolean properties. See COLFLAG_ defines below */ }; -/* Allowed values for Column.colFlags: +/* Allowed values for Column.eCType. +** +** Values must match entries in the global constant arrays +** sqlite3StdTypeLen[] and sqlite3StdType[]. Each value is one more +** than the offset into these arrays for the corresponding name. +** Adjust the SQLITE_N_STDTYPE value if adding or removing entries. */ -#define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ -#define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ -#define COLFLAG_HASTYPE 0x0004 /* Type name follows column name */ -#define COLFLAG_UNIQUE 0x0008 /* Column def contains "UNIQUE" or "PK" */ +#define COLTYPE_CUSTOM 0 /* Type appended to zName */ +#define COLTYPE_ANY 1 +#define COLTYPE_BLOB 2 +#define COLTYPE_INT 3 +#define COLTYPE_INTEGER 4 +#define COLTYPE_REAL 5 +#define COLTYPE_TEXT 6 +#define SQLITE_N_STDTYPE 6 /* Number of standard types */ + +/* Allowed values for Column.colFlags. +** +** Constraints: +** TF_HasVirtual == COLFLAG_VIRTUAL +** TF_HasStored == COLFLAG_STORED +** TF_HasHidden == COLFLAG_HIDDEN +*/ +#define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ +#define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ +#define COLFLAG_HASTYPE 0x0004 /* Type name follows column name */ +#define COLFLAG_UNIQUE 0x0008 /* Column def contains "UNIQUE" or "PK" */ #define COLFLAG_SORTERREF 0x0010 /* Use sorter-refs with this column */ +#define COLFLAG_VIRTUAL 0x0020 /* GENERATED ALWAYS AS ... VIRTUAL */ +#define COLFLAG_STORED 0x0040 /* GENERATED ALWAYS AS ... STORED */ +#define COLFLAG_NOTAVAIL 0x0080 /* STORED column not yet calculated */ +#define COLFLAG_BUSY 0x0100 /* Blocks recursion on GENERATED columns */ +#define COLFLAG_HASCOLL 0x0200 /* Has collating sequence name in zCnName */ +#define COLFLAG_NOEXPAND 0x0400 /* Omit this column when expanding "*" */ +#define COLFLAG_GENERATED 0x0060 /* Combo: _STORED, _VIRTUAL */ +#define COLFLAG_NOINSERT 0x0062 /* Combo: _HIDDEN, _STORED, _VIRTUAL */ /* ** A "Collating Sequence" is defined by an instance of the following @@ -16348,11 +17929,13 @@ struct CollSeq { ** Note also that the numeric types are grouped together so that testing ** for a numeric type is a single comparison. And the BLOB type is first. */ -#define SQLITE_AFF_BLOB 'A' -#define SQLITE_AFF_TEXT 'B' -#define SQLITE_AFF_NUMERIC 'C' -#define SQLITE_AFF_INTEGER 'D' -#define SQLITE_AFF_REAL 'E' +#define SQLITE_AFF_NONE 0x40 /* '@' */ +#define SQLITE_AFF_BLOB 0x41 /* 'A' */ +#define SQLITE_AFF_TEXT 0x42 /* 'B' */ +#define SQLITE_AFF_NUMERIC 0x43 /* 'C' */ +#define SQLITE_AFF_INTEGER 0x44 /* 'D' */ +#define SQLITE_AFF_REAL 0x45 /* 'E' */ +#define SQLITE_AFF_FLEXNUM 0x46 /* 'F' */ #define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC) @@ -16371,9 +17954,7 @@ struct CollSeq { ** operator is NULL. It is added to certain comparison operators to ** prove that the operands are always NOT NULL. */ -#define SQLITE_KEEPNULL 0x08 /* Used by vector == or <> */ #define SQLITE_JUMPIFNULL 0x10 /* jumps if either operand is NULL */ -#define SQLITE_STOREP2 0x20 /* Store result in reg[P2] rather than jump */ #define SQLITE_NULLEQ 0x80 /* NULL=NULL */ #define SQLITE_NOTNULL 0x90 /* Assert that operands are never NULL */ @@ -16425,45 +18006,60 @@ struct VTable { sqlite3_vtab *pVtab; /* Pointer to vtab instance */ int nRef; /* Number of pointers to this structure */ u8 bConstraint; /* True if constraints are supported */ + u8 bAllSchemas; /* True if might use any attached schema */ + u8 eVtabRisk; /* Riskiness of allowing hacker access */ int iSavepoint; /* Depth of the SAVEPOINT stack */ VTable *pNext; /* Next in linked list (see above) */ }; +/* Allowed values for VTable.eVtabRisk +*/ +#define SQLITE_VTABRISK_Low 0 +#define SQLITE_VTABRISK_Normal 1 +#define SQLITE_VTABRISK_High 2 + /* -** The schema for each SQL table and view is represented in memory -** by an instance of the following structure. +** The schema for each SQL table, virtual table, and view is represented +** in memory by an instance of the following structure. */ struct Table { char *zName; /* Name of the table or view */ Column *aCol; /* Information about each column */ Index *pIndex; /* List of SQL indexes on this table. */ - Select *pSelect; /* NULL for tables. Points to definition if a view. */ - FKey *pFKey; /* Linked list of all foreign keys in this table */ char *zColAff; /* String defining the affinity of each column */ ExprList *pCheck; /* All CHECK constraints */ /* ... also used as column name list in a VIEW */ - int tnum; /* Root BTree page for this table */ + Pgno tnum; /* Root BTree page for this table */ u32 nTabRef; /* Number of pointers to this Table */ u32 tabFlags; /* Mask of TF_* values */ i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */ i16 nCol; /* Number of columns in this table */ + i16 nNVCol; /* Number of columns that are not VIRTUAL */ LogEst nRowLogEst; /* Estimated rows in table - from sqlite_stat1 table */ LogEst szTabRow; /* Estimated size of each table row in bytes */ #ifdef SQLITE_ENABLE_COSTMULT LogEst costMult; /* Cost multiplier for using this table */ #endif u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ -#ifndef SQLITE_OMIT_ALTERTABLE - int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* 0: module 1: schema 2: vtab name 3...: args */ - VTable *pVTable; /* List of VTable objects. */ -#endif - Trigger *pTrigger; /* List of triggers stored in pSchema */ + u8 eTabType; /* 0: normal, 1: virtual, 2: view */ + union { + struct { /* Used by ordinary tables: */ + int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ + FKey *pFKey; /* Linked list of all foreign keys in this table */ + ExprList *pDfltList; /* DEFAULT clauses on various columns. + ** Or the AS clause for generated columns. */ + } tab; + struct { /* Used by views: */ + Select *pSelect; /* View definition */ + } view; + struct { /* Used by virtual tables only: */ + int nArg; /* Number of arguments to the module */ + char **azArg; /* 0: module 1: schema 2: vtab name 3...: args */ + VTable *p; /* List of VTable objects. */ + } vtab; + } u; + Trigger *pTrigger; /* List of triggers on this object */ Schema *pSchema; /* Schema that contains this table */ - Table *pNextZombie; /* Next on the Parse.pZombieTab list */ }; /* @@ -16473,19 +18069,43 @@ struct Table { ** followed by non-hidden columns. Example: "CREATE VIRTUAL TABLE x USING ** vtab1(a HIDDEN, b);". Since "b" is a non-hidden column but "a" is hidden, ** the TF_OOOHidden attribute would apply in this case. Such tables require -** special handling during INSERT processing. +** special handling during INSERT processing. The "OOO" means "Out Of Order". +** +** Constraints: +** +** TF_HasVirtual == COLFLAG_VIRTUAL +** TF_HasStored == COLFLAG_STORED +** TF_HasHidden == COLFLAG_HIDDEN */ -#define TF_Readonly 0x0001 /* Read-only system table */ -#define TF_Ephemeral 0x0002 /* An ephemeral table */ -#define TF_HasPrimaryKey 0x0004 /* Table has a primary key */ -#define TF_Autoincrement 0x0008 /* Integer primary key is autoincrement */ -#define TF_HasStat1 0x0010 /* nRowLogEst set from sqlite_stat1 */ -#define TF_WithoutRowid 0x0020 /* No rowid. PRIMARY KEY is the key */ -#define TF_NoVisibleRowid 0x0040 /* No user-visible "rowid" column */ -#define TF_OOOHidden 0x0080 /* Out-of-Order hidden columns */ -#define TF_StatsUsed 0x0100 /* Query planner decisions affected by +#define TF_Readonly 0x00000001 /* Read-only system table */ +#define TF_HasHidden 0x00000002 /* Has one or more hidden columns */ +#define TF_HasPrimaryKey 0x00000004 /* Table has a primary key */ +#define TF_Autoincrement 0x00000008 /* Integer primary key is autoincrement */ +#define TF_HasStat1 0x00000010 /* nRowLogEst set from sqlite_stat1 */ +#define TF_HasVirtual 0x00000020 /* Has one or more VIRTUAL columns */ +#define TF_HasStored 0x00000040 /* Has one or more STORED columns */ +#define TF_HasGenerated 0x00000060 /* Combo: HasVirtual + HasStored */ +#define TF_WithoutRowid 0x00000080 /* No rowid. PRIMARY KEY is the key */ +#define TF_StatsUsed 0x00000100 /* Query planner decisions affected by ** Index.aiRowLogEst[] values */ -#define TF_HasNotNull 0x0200 /* Contains NOT NULL constraints */ +#define TF_NoVisibleRowid 0x00000200 /* No user-visible "rowid" column */ +#define TF_OOOHidden 0x00000400 /* Out-of-Order hidden columns */ +#define TF_HasNotNull 0x00000800 /* Contains NOT NULL constraints */ +#define TF_Shadow 0x00001000 /* True for a shadow table */ +#define TF_HasStat4 0x00002000 /* STAT4 info available for this table */ +#define TF_Ephemeral 0x00004000 /* An ephemeral table */ +#define TF_Eponymous 0x00008000 /* An eponymous virtual table */ +#define TF_Strict 0x00010000 /* STRICT mode */ + +/* +** Allowed values for Table.eTabType +*/ +#define TABTYP_NORM 0 /* Ordinary table */ +#define TABTYP_VTAB 1 /* Virtual table */ +#define TABTYP_VIEW 2 /* A view */ + +#define IsView(X) ((X)->eTabType==TABTYP_VIEW) +#define IsOrdinaryTable(X) ((X)->eTabType==TABTYP_NORM) /* ** Test to see whether or not a table is a virtual table. This is @@ -16493,9 +18113,12 @@ struct Table { ** table support is omitted from the build. */ #ifndef SQLITE_OMIT_VIRTUALTABLE -# define IsVirtual(X) ((X)->nModuleArg) +# define IsVirtual(X) ((X)->eTabType==TABTYP_VTAB) +# define ExprIsVtab(X) \ + ((X)->op==TK_COLUMN && (X)->y.pTab->eTabType==TABTYP_VTAB) #else # define IsVirtual(X) 0 +# define ExprIsVtab(X) 0 #endif /* @@ -16579,16 +18202,22 @@ struct FKey { ** is returned. REPLACE means that preexisting database rows that caused ** a UNIQUE constraint violation are removed so that the new insert or ** update can proceed. Processing continues and no error is reported. +** UPDATE applies to insert operations only and means that the insert +** is omitted and the DO UPDATE clause of an upsert is run instead. ** -** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys. +** RESTRICT, SETNULL, SETDFLT, and CASCADE actions apply only to foreign keys. ** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the ** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign -** key is set to NULL. CASCADE means that a DELETE or UPDATE of the +** key is set to NULL. SETDFLT means that the foreign key is set +** to its default value. CASCADE means that a DELETE or UPDATE of the ** referenced table row is propagated into the row that holds the ** foreign key. ** +** The OE_Default value is a place holder that means to use whatever +** conflict resolution algorithm is required from context. +** ** The following symbolic values are used to record which type -** of action to take. +** of conflict resolution action to take. */ #define OE_None 0 /* There is no constraint to check */ #define OE_Rollback 1 /* Fail the operation and rollback the transaction */ @@ -16619,10 +18248,16 @@ struct KeyInfo { u16 nKeyField; /* Number of key columns in the index */ u16 nAllField; /* Total columns, including key plus others */ sqlite3 *db; /* The database connection */ - u8 *aSortOrder; /* Sort order for each column. */ + u8 *aSortFlags; /* Sort order for each column. */ CollSeq *aColl[1]; /* Collating sequence for each term of the key */ }; +/* +** Allowed bit values for entries in the KeyInfo.aSortFlags[] array. +*/ +#define KEYINFO_ORDER_DESC 0x01 /* DESC sort order */ +#define KEYINFO_ORDER_BIGNULL 0x02 /* NULL is larger than any other value */ + /* ** This object holds a record which has been parsed out into individual ** fields, for the purposes of doing a comparison. @@ -16661,6 +18296,11 @@ struct KeyInfo { struct UnpackedRecord { KeyInfo *pKeyInfo; /* Collation and sort-order information */ Mem *aMem; /* Values */ + union { + char *z; /* Cache of aMem[0].z for vdbeRecordCompareString() */ + i64 i; /* Cache of aMem[0].u.i for vdbeRecordCompareInt() */ + } u; + int n; /* Cache of aMem[0].n used by vdbeRecordCompareString() */ u16 nField; /* Number of entries in apMem[] */ i8 default_rc; /* Comparison result if keys are equal */ u8 errCode; /* Error detected by xRecordCompare (CORRUPT or NOMEM) */ @@ -16692,12 +18332,24 @@ struct UnpackedRecord { ** The Index.onError field determines whether or not the indexed columns ** must be unique and what to do if they are not. When Index.onError=OE_None, ** it means this is not a unique index. Otherwise it is a unique index -** and the value of Index.onError indicate the which conflict resolution -** algorithm to employ whenever an attempt is made to insert a non-unique +** and the value of Index.onError indicates which conflict resolution +** algorithm to employ when an attempt is made to insert a non-unique ** element. ** +** The colNotIdxed bitmask is used in combination with SrcItem.colUsed +** for a fast test to see if an index can serve as a covering index. +** colNotIdxed has a 1 bit for every column of the original table that +** is *not* available in the index. Thus the expression +** "colUsed & colNotIdxed" will be non-zero if the index is not a +** covering index. The most significant bit of of colNotIdxed will always +** be true (note-20221022-a). If a column beyond the 63rd column of the +** table is used, the "colUsed & colNotIdxed" test will always be non-zero +** and we have to assume either that the index is not covering, or use +** an alternative (slower) algorithm to determine whether or not +** the index is covering. +** ** While parsing a CREATE TABLE or CREATE INDEX statement in order to -** generate VDBE code (as opposed to parsing one read from an sqlite_master +** generate VDBE code (as opposed to parsing one read from an sqlite_schema ** table as part of parsing an existing database schema), transient instances ** of this structure may be created. In this case the Index.tnum variable is ** used to store the address of a VDBE instruction, not a database page @@ -16716,12 +18368,12 @@ struct Index { const char **azColl; /* Array of collation sequence names for index */ Expr *pPartIdxWhere; /* WHERE clause for partial indices */ ExprList *aColExpr; /* Column expressions */ - int tnum; /* DB Page containing root of this index */ + Pgno tnum; /* DB Page containing root of this index */ LogEst szIdxRow; /* Estimated average row size in bytes */ u16 nKeyCol; /* Number of columns forming the key */ u16 nColumn; /* Number of columns stored in the index */ u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - unsigned idxType:2; /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */ + unsigned idxType:2; /* 0:Normal 1:UNIQUE, 2:PRIMARY KEY, 3:IPK */ unsigned bUnordered:1; /* Use this index for == or IN queries only */ unsigned uniqNotNull:1; /* True if UNIQUE and NOT NULL for all columns */ unsigned isResized:1; /* True if resizeIndexObject() has been called */ @@ -16729,14 +18381,20 @@ struct Index { unsigned noSkipScan:1; /* Do not try to use skip-scan if true */ unsigned hasStat1:1; /* aiRowLogEst values come from sqlite_stat1 */ unsigned bNoQuery:1; /* Do not use this index to optimize queries */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + unsigned bAscKeyBug:1; /* True if the bba7b69f9849b5bf bug applies */ + unsigned bHasVCol:1; /* Index references one or more VIRTUAL columns */ + unsigned bHasExpr:1; /* Index contains an expression, either a literal + ** expression, or a reference to a VIRTUAL column */ +#ifdef SQLITE_ENABLE_STAT4 int nSample; /* Number of elements in aSample[] */ + int mxSample; /* Number of slots allocated to aSample[] */ int nSampleCol; /* Size of IndexSample.anEq[] and so on */ tRowcnt *aAvgEq; /* Average nEq values for keys not in aSample */ IndexSample *aSample; /* Samples of the left-most key */ tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this index */ tRowcnt nRowEst0; /* Non-logarithmic number of rows in the index */ #endif + Bitmask colNotIdxed; /* Unindexed columns in pTab */ }; /* @@ -16745,6 +18403,7 @@ struct Index { #define SQLITE_IDXTYPE_APPDEF 0 /* Created using CREATE INDEX */ #define SQLITE_IDXTYPE_UNIQUE 1 /* Implements a UNIQUE constraint */ #define SQLITE_IDXTYPE_PRIMARYKEY 2 /* Is the PRIMARY KEY for the table */ +#define SQLITE_IDXTYPE_IPK 3 /* INTEGER PRIMARY KEY index */ /* Return true if index X is a PRIMARY KEY index */ #define IsPrimaryKeyIndex(X) ((X)->idxType==SQLITE_IDXTYPE_PRIMARYKEY) @@ -16759,7 +18418,7 @@ struct Index { #define XN_EXPR (-2) /* Indexed column is an expression */ /* -** Each sample stored in the sqlite_stat3 table is represented in memory +** Each sample stored in the sqlite_stat4 table is represented in memory ** using a structure of this type. See documentation at the top of the ** analyze.c source file for additional information. */ @@ -16771,13 +18430,21 @@ struct IndexSample { tRowcnt *anDLt; /* Est. number of distinct keys less than this sample */ }; +/* +** Possible values to use within the flags argument to sqlite3GetToken(). +*/ +#define SQLITE_TOKEN_QUOTED 0x1 /* Token is a quoted identifier. */ +#define SQLITE_TOKEN_KEYWORD 0x2 /* Token is a keyword. */ + /* ** Each token coming out of the lexer is an instance of ** this structure. Tokens are also used as part of an expression. ** -** Note if Token.z==0 then Token.dyn and Token.n are undefined and -** may contain random values. Do not make any assumptions about Token.dyn -** and Token.n when Token.z==0. +** The memory that "z" points to is owned by other objects. Take care +** that the owner of the "z" string does not deallocate the string before +** the Token goes out of scope! Very often, the "z" points to some place +** in the middle of the Parse.zSql text. But it might also point to a +** static string. */ struct Token { const char *z; /* Text of the token. Not NULL-terminated! */ @@ -16789,7 +18456,7 @@ struct Token { ** code for a SELECT that contains aggregate functions. ** ** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a -** pointer to this structure. The Expr.iColumn field is the index in +** pointer to this structure. The Expr.iAgg field is the index in ** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate ** code for that node. ** @@ -16802,32 +18469,46 @@ struct AggInfo { ** from source tables rather than from accumulators */ u8 useSortingIdx; /* In direct mode, reference the sorting index rather ** than the source table */ + u16 nSortingColumn; /* Number of columns in the sorting index */ int sortingIdx; /* Cursor number of the sorting index */ int sortingIdxPTab; /* Cursor number of pseudo-table */ - int nSortingColumn; /* Number of columns in the sorting index */ - int mnReg, mxReg; /* Range of registers allocated for aCol and aFunc */ + int iFirstReg; /* First register in range for aCol[] and aFunc[] */ ExprList *pGroupBy; /* The group by clause */ struct AggInfo_col { /* For each column used in source tables */ Table *pTab; /* Source table */ + Expr *pCExpr; /* The original expression */ int iTable; /* Cursor number of the source table */ - int iColumn; /* Column number within the source table */ - int iSorterColumn; /* Column number in the sorting index */ - int iMem; /* Memory location that acts as accumulator */ - Expr *pExpr; /* The original expression */ + i16 iColumn; /* Column number within the source table */ + i16 iSorterColumn; /* Column number in the sorting index */ } *aCol; int nColumn; /* Number of used entries in aCol[] */ int nAccumulator; /* Number of columns that show through to the output. ** Additional columns are used only as parameters to ** aggregate functions */ struct AggInfo_func { /* For each aggregate function */ - Expr *pExpr; /* Expression encoding the function */ + Expr *pFExpr; /* Expression encoding the function */ FuncDef *pFunc; /* The aggregate function implementation */ - int iMem; /* Memory location that acts as accumulator */ int iDistinct; /* Ephemeral table used to enforce DISTINCT */ + int iDistAddr; /* Address of OP_OpenEphemeral */ } *aFunc; int nFunc; /* Number of entries in aFunc[] */ + u32 selId; /* Select to which this AggInfo belongs */ +#ifdef SQLITE_DEBUG + Select *pSelect; /* SELECT statement that this AggInfo supports */ +#endif }; +/* +** Macros to compute aCol[] and aFunc[] register numbers. +** +** These macros should not be used prior to the call to +** assignAggregateRegisters() that computes the value of pAggInfo->iFirstReg. +** The assert()s that are part of this macro verify that constraint. +*/ +#define AggInfoColumnReg(A,I) (assert((A)->iFirstReg),(A)->iFirstReg+(I)) +#define AggInfoFuncReg(A,I) \ + (assert((A)->iFirstReg),(A)->iFirstReg+(A)->nColumn+(I)) + /* ** The datatype ynVar is a signed integer, either 16-bit or 32-bit. ** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater @@ -16835,10 +18516,10 @@ struct AggInfo { ** it uses less memory in the Expr object, which is a big memory user ** in systems with lots of prepared statements. And few applications ** need more than about 10 or 20 variables. But some extreme users want -** to have prepared statements with over 32767 variables, and for them +** to have prepared statements with over 32766 variables, and for them ** the option is available (at compile-time). */ -#if SQLITE_MAX_VARIABLE_NUMBER<=32767 +#if SQLITE_MAX_VARIABLE_NUMBER<32767 typedef i16 ynVar; #else typedef int ynVar; @@ -16855,10 +18536,10 @@ typedef int ynVar; ** tree. ** ** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, -** or TK_STRING), then Expr.token contains the text of the SQL literal. If -** the expression is a variable (TK_VARIABLE), then Expr.token contains the +** or TK_STRING), then Expr.u.zToken contains the text of the SQL literal. If +** the expression is a variable (TK_VARIABLE), then Expr.u.zToken contains the ** variable name. Finally, if the expression is an SQL function (TK_FUNCTION), -** then Expr.token contains the name of the function. +** then Expr.u.zToken contains the name of the function. ** ** Expr.pRight and Expr.pLeft are the left and right subexpressions of a ** binary operator. Either or both may be NULL. @@ -16898,7 +18579,7 @@ typedef int ynVar; ** help reduce memory requirements, sometimes an Expr object will be ** truncated. And to reduce the number of memory allocations, sometimes ** two or more Expr objects will be stored in a single memory allocation, -** together with Expr.zToken strings. +** together with Expr.u.zToken strings. ** ** If the EP_Reduced and EP_TokenOnly flags are set when ** an Expr object is truncated. When EP_Reduced is set, then all @@ -16909,7 +18590,14 @@ typedef int ynVar; */ struct Expr { u8 op; /* Operation performed by this node */ - char affinity; /* The affinity of the column or 0 if not a column */ + char affExpr; /* affinity, or RAISE type */ + u8 op2; /* TK_REGISTER/TK_TRUTH: original value of Expr.op + ** TK_COLUMN: the value of p5 for OP_Column + ** TK_AGG_FUNCTION: nesting depth + ** TK_FUNCTION: NC_SelfRef flag if needs OP_PureFunc */ +#ifdef SQLITE_DEBUG + u8 vvaFlags; /* Verification flags. */ +#endif u32 flags; /* Various flags. EP_* See below */ union { char *zToken; /* Token value. Zero terminated and dequoted */ @@ -16940,71 +18628,113 @@ struct Expr { ** TK_REGISTER: register number ** TK_TRIGGER: 1 -> new, 0 -> old ** EP_Unlikely: 134217728 times likelihood + ** TK_IN: ephemeral table holding RHS + ** TK_SELECT_COLUMN: Number of columns on the LHS ** TK_SELECT: 1st register of result vector */ ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. ** TK_VARIABLE: variable number (always >= 1). ** TK_SELECT_COLUMN: column of the result vector */ i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ - i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */ - u8 op2; /* TK_REGISTER: original value of Expr.op - ** TK_COLUMN: the value of p5 for OP_Column - ** TK_AGG_FUNCTION: nesting depth */ + union { + int iJoin; /* If EP_OuterON or EP_InnerON, the right table */ + int iOfst; /* else: start of token from start of statement */ + } w; AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */ - Table *pTab; /* Table for TK_COLUMN expressions. Can be NULL - ** for a column of an index on an expression */ + union { + Table *pTab; /* TK_COLUMN: Table containing column. Can be NULL + ** for a column of an index on an expression */ + Window *pWin; /* EP_WinFunc: Window/Filter defn for a function */ + struct { /* TK_IN, TK_SELECT, and TK_EXISTS */ + int iAddr; /* Subroutine entry address */ + int regReturn; /* Register used to hold return address */ + } sub; + } y; }; -/* -** The following are the meanings of bits in the Expr.flags field. +/* The following are the meanings of bits in the Expr.flags field. +** Value restrictions: +** +** EP_Agg == NC_HasAgg == SF_HasAgg +** EP_Win == NC_HasWin */ -#define EP_FromJoin 0x000001 /* Originates in ON/USING clause of outer join */ -#define EP_Agg 0x000002 /* Contains one or more aggregate functions */ -#define EP_HasFunc 0x000004 /* Contains one or more functions of any kind */ - /* 0x000008 // available for use */ -#define EP_Distinct 0x000010 /* Aggregate function with DISTINCT keyword */ -#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */ -#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */ -#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */ -#define EP_Collate 0x000100 /* Tree contains a TK_COLLATE operator */ -#define EP_Generic 0x000200 /* Ignore COLLATE or affinity on this tree */ -#define EP_IntValue 0x000400 /* Integer value contained in u.iValue */ -#define EP_xIsSelect 0x000800 /* x.pSelect is valid (otherwise x.pList is) */ -#define EP_Skip 0x001000 /* COLLATE, AS, or UNLIKELY */ -#define EP_Reduced 0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */ -#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */ -#define EP_Static 0x008000 /* Held in memory not obtained from malloc() */ -#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */ -#define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */ -#define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */ -#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ -#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */ -#define EP_Subquery 0x200000 /* Tree contains a TK_SELECT operator */ -#define EP_Alias 0x400000 /* Is an alias for a result set column */ -#define EP_Leaf 0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */ +#define EP_OuterON 0x000001 /* Originates in ON/USING clause of outer join */ +#define EP_InnerON 0x000002 /* Originates in ON/USING of an inner join */ +#define EP_Distinct 0x000004 /* Aggregate function with DISTINCT keyword */ +#define EP_HasFunc 0x000008 /* Contains one or more functions of any kind */ +#define EP_Agg 0x000010 /* Contains one or more aggregate functions */ +#define EP_FixedCol 0x000020 /* TK_Column with a known fixed value */ +#define EP_VarSelect 0x000040 /* pSelect is correlated, not constant */ +#define EP_DblQuoted 0x000080 /* token.z was originally in "..." */ +#define EP_InfixFunc 0x000100 /* True for an infix function: LIKE, GLOB, etc */ +#define EP_Collate 0x000200 /* Tree contains a TK_COLLATE operator */ +#define EP_Commuted 0x000400 /* Comparison operator has been commuted */ +#define EP_IntValue 0x000800 /* Integer value contained in u.iValue */ +#define EP_xIsSelect 0x001000 /* x.pSelect is valid (otherwise x.pList is) */ +#define EP_Skip 0x002000 /* Operator does not contribute to affinity */ +#define EP_Reduced 0x004000 /* Expr struct EXPR_REDUCEDSIZE bytes only */ +#define EP_Win 0x008000 /* Contains window functions */ +#define EP_TokenOnly 0x010000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */ + /* 0x020000 // Available for reuse */ +#define EP_IfNullRow 0x040000 /* The TK_IF_NULL_ROW opcode */ +#define EP_Unlikely 0x080000 /* unlikely() or likelihood() function */ +#define EP_ConstFunc 0x100000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ +#define EP_CanBeNull 0x200000 /* Can be null despite NOT NULL constraint */ +#define EP_Subquery 0x400000 /* Tree contains a TK_SELECT operator */ +#define EP_Leaf 0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */ +#define EP_WinFunc 0x1000000 /* TK_FUNCTION with Expr.y.pWin set */ +#define EP_Subrtn 0x2000000 /* Uses Expr.y.sub. TK_IN, _SELECT, or _EXISTS */ +#define EP_Quoted 0x4000000 /* TK_ID was originally quoted */ +#define EP_Static 0x8000000 /* Held in memory not obtained from malloc() */ +#define EP_IsTrue 0x10000000 /* Always has boolean value of TRUE */ +#define EP_IsFalse 0x20000000 /* Always has boolean value of FALSE */ +#define EP_FromDDL 0x40000000 /* Originates from sqlite_schema */ + /* 0x80000000 // Available */ -/* -** The EP_Propagate mask is a set of properties that automatically propagate +/* The EP_Propagate mask is a set of properties that automatically propagate ** upwards into parent nodes. */ #define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc) -/* -** These macros can be used to test, set, or clear bits in the +/* Macros can be used to test, set, or clear bits in the ** Expr.flags field. */ #define ExprHasProperty(E,P) (((E)->flags&(P))!=0) #define ExprHasAllProperty(E,P) (((E)->flags&(P))==(P)) #define ExprSetProperty(E,P) (E)->flags|=(P) #define ExprClearProperty(E,P) (E)->flags&=~(P) +#define ExprAlwaysTrue(E) (((E)->flags&(EP_OuterON|EP_IsTrue))==EP_IsTrue) +#define ExprAlwaysFalse(E) (((E)->flags&(EP_OuterON|EP_IsFalse))==EP_IsFalse) + +/* Macros used to ensure that the correct members of unions are accessed +** in Expr. +*/ +#define ExprUseUToken(E) (((E)->flags&EP_IntValue)==0) +#define ExprUseUValue(E) (((E)->flags&EP_IntValue)!=0) +#define ExprUseWOfst(E) (((E)->flags&(EP_InnerON|EP_OuterON))==0) +#define ExprUseWJoin(E) (((E)->flags&(EP_InnerON|EP_OuterON))!=0) +#define ExprUseXList(E) (((E)->flags&EP_xIsSelect)==0) +#define ExprUseXSelect(E) (((E)->flags&EP_xIsSelect)!=0) +#define ExprUseYTab(E) (((E)->flags&(EP_WinFunc|EP_Subrtn))==0) +#define ExprUseYWin(E) (((E)->flags&EP_WinFunc)!=0) +#define ExprUseYSub(E) (((E)->flags&EP_Subrtn)!=0) + +/* Flags for use with Expr.vvaFlags +*/ +#define EP_NoReduce 0x01 /* Cannot EXPRDUP_REDUCE this Expr */ +#define EP_Immutable 0x02 /* Do not change this Expr node */ /* The ExprSetVVAProperty() macro is used for Verification, Validation, ** and Accreditation only. It works like ExprSetProperty() during VVA ** processes but is a no-op for delivery. */ #ifdef SQLITE_DEBUG -# define ExprSetVVAProperty(E,P) (E)->flags|=(P) +# define ExprSetVVAProperty(E,P) (E)->vvaFlags|=(P) +# define ExprHasVVAProperty(E,P) (((E)->vvaFlags&(P))!=0) +# define ExprClearVVAProperties(E) (E)->vvaFlags = 0 #else # define ExprSetVVAProperty(E,P) +# define ExprHasVVAProperty(E,P) 0 +# define ExprClearVVAProperties(E) #endif /* @@ -17022,6 +18752,18 @@ struct Expr { */ #define EXPRDUP_REDUCE 0x0001 /* Used reduced-size Expr nodes */ +/* +** True if the expression passed as an argument was a function with +** an OVER() clause (a window function). +*/ +#ifdef SQLITE_OMIT_WINDOWFUNC +# define IsWindowFunc(p) 0 +#else +# define IsWindowFunc(p) ( \ + ExprHasProperty((p), EP_WinFunc) && p->y.pWin->eFrmType!=TK_FILTER \ + ) +#endif + /* ** A list of expressions. Each expression may optionally have a ** name. An expr/name combination can be used in several ways, such @@ -17030,35 +18772,56 @@ struct Expr { ** also be used as the argument to a function, in which case the a.zName ** field is not used. ** -** By default the Expr.zSpan field holds a human-readable description of -** the expression that is used in the generation of error messages and -** column labels. In this case, Expr.zSpan is typically the text of a -** column expression as it exists in a SELECT statement. However, if -** the bSpanIsTab flag is set, then zSpan is overloaded to mean the name -** of the result column in the form: DATABASE.TABLE.COLUMN. This later -** form is used for name resolution with nested FROM clauses. +** In order to try to keep memory usage down, the Expr.a.zEName field +** is used for multiple purposes: +** +** eEName Usage +** ---------- ------------------------- +** ENAME_NAME (1) the AS of result set column +** (2) COLUMN= of an UPDATE +** +** ENAME_TAB DB.TABLE.NAME used to resolve names +** of subqueries +** +** ENAME_SPAN Text of the original result set +** expression. */ struct ExprList { int nExpr; /* Number of expressions on the list */ + int nAlloc; /* Number of a[] slots allocated */ struct ExprList_item { /* For each expression in the list */ Expr *pExpr; /* The parse tree for this expression */ - char *zName; /* Token associated with this expression */ - char *zSpan; /* Original text of the expression */ - u8 sortOrder; /* 1 for DESC or 0 for ASC */ - unsigned done :1; /* A flag to indicate when processing is finished */ - unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */ - unsigned reusable :1; /* Constant expression is reusable */ - unsigned bSorterRef :1; /* Defer evaluation until after sorting */ + char *zEName; /* Token associated with this expression */ + struct { + u8 sortFlags; /* Mask of KEYINFO_ORDER_* flags */ + unsigned eEName :2; /* Meaning of zEName */ + unsigned done :1; /* Indicates when processing is finished */ + unsigned reusable :1; /* Constant expression is reusable */ + unsigned bSorterRef :1; /* Defer evaluation until after sorting */ + unsigned bNulls :1; /* True if explicit "NULLS FIRST/LAST" */ + unsigned bUsed :1; /* This column used in a SF_NestedFrom subquery */ + unsigned bUsingTerm:1; /* Term from the USING clause of a NestedFrom */ + unsigned bNoExpand: 1; /* Term is an auxiliary in NestedFrom and should + ** not be expanded by "*" in parent queries */ + } fg; union { - struct { + struct { /* Used by any ExprList other than Parse.pConsExpr */ u16 iOrderByCol; /* For ORDER BY, column number in result set */ u16 iAlias; /* Index into Parse.aAlias[] for zName */ } x; - int iConstExprReg; /* Register in which Expr value is cached */ + int iConstExprReg; /* Register in which Expr value is cached. Used only + ** by Parse.pConstExpr */ } u; } a[1]; /* One slot for each expression in the list */ }; +/* +** Allowed values for Expr.a.eEName +*/ +#define ENAME_NAME 0 /* The AS clause of a result set */ +#define ENAME_SPAN 1 /* Complete text of the result set expression */ +#define ENAME_TAB 2 /* "DB.TABLE.NAME" for the result set */ + /* ** An instance of this structure can hold a simple list of identifiers, ** such as the list "a,b,c" in the following statements: @@ -17075,48 +18838,28 @@ struct ExprList { ** If "a" is the k-th column of table "t", then IdList.a[0].idx==k. */ struct IdList { + int nId; /* Number of identifiers on the list */ + u8 eU4; /* Which element of a.u4 is valid */ struct IdList_item { char *zName; /* Name of the identifier */ - int idx; /* Index in some Table.aCol[] of a column named zName */ - } *a; - int nId; /* Number of identifiers on the list */ + union { + int idx; /* Index in some Table.aCol[] of a column named zName */ + Expr *pExpr; /* Expr to implement a USING variable -- NOT USED */ + } u4; + } a[1]; }; /* -** The bitmask datatype defined below is used for various optimizations. -** -** Changing this from a 64-bit to a 32-bit type limits the number of -** tables in a join to 32 instead of 64. But it also reduces the size -** of the library by 738 bytes on ix86. +** Allowed values for IdList.eType, which determines which value of the a.u4 +** is valid. */ -#ifdef SQLITE_BITMASK_TYPE - typedef SQLITE_BITMASK_TYPE Bitmask; -#else - typedef u64 Bitmask; -#endif +#define EU4_NONE 0 /* Does not use IdList.a.u4 */ +#define EU4_IDX 1 /* Uses IdList.a.u4.idx */ +#define EU4_EXPR 2 /* Uses IdList.a.u4.pExpr -- NOT CURRENTLY USED */ /* -** The number of bits in a Bitmask. "BMS" means "BitMask Size". -*/ -#define BMS ((int)(sizeof(Bitmask)*8)) - -/* -** A bit in a Bitmask -*/ -#define MASKBIT(n) (((Bitmask)1)<<(n)) -#define MASKBIT32(n) (((unsigned int)1)<<(n)) -#define ALLBITS ((Bitmask)-1) - -/* -** The following structure describes the FROM clause of a SELECT statement. -** Each table or subquery in the FROM clause is a separate element of -** the SrcList.a[] array. -** -** With the addition of multiple database support, the following structure -** can also be used to describe a particular table such as the table that -** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL, -** such a table must be a simple name: ID. But in SQLite, the table can -** now be identified by a database name, a dot, then the table name: ID.ID. +** The SrcItem object represents a single term in the FROM clause of a query. +** The SrcList object is mostly an array of SrcItems. ** ** The jointype starts out showing the join type between the current table ** and the next table on the list. The parser builds the list this way. @@ -17125,52 +18868,91 @@ struct IdList { ** ** In the colUsed field, the high-order bit (bit 63) is set if the table ** contains more than 63 columns and the 64-th or later column is used. +** +** Union member validity: +** +** u1.zIndexedBy fg.isIndexedBy && !fg.isTabFunc +** u1.pFuncArg fg.isTabFunc && !fg.isIndexedBy +** u2.pIBIndex fg.isIndexedBy && !fg.isCte +** u2.pCteUse fg.isCte && !fg.isIndexedBy +*/ +struct SrcItem { + Schema *pSchema; /* Schema to which this item is fixed */ + char *zDatabase; /* Name of database holding this table */ + char *zName; /* Name of the table */ + char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */ + Table *pTab; /* An SQL table corresponding to zName */ + Select *pSelect; /* A SELECT statement used in place of a table name */ + int addrFillSub; /* Address of subroutine to manifest a subquery */ + int regReturn; /* Register holding return address of addrFillSub */ + int regResult; /* Registers holding results of a co-routine */ + struct { + u8 jointype; /* Type of join between this table and the previous */ + unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ + unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ + unsigned isTabFunc :1; /* True if table-valued-function syntax */ + unsigned isCorrelated :1; /* True if sub-query is correlated */ + unsigned isMaterialized:1; /* This is a materialized view */ + unsigned viaCoroutine :1; /* Implemented as a co-routine */ + unsigned isRecursive :1; /* True for recursive reference in WITH */ + unsigned fromDDL :1; /* Comes from sqlite_schema */ + unsigned isCte :1; /* This is a CTE */ + unsigned notCte :1; /* This item may not match a CTE */ + unsigned isUsing :1; /* u3.pUsing is valid */ + unsigned isOn :1; /* u3.pOn was once valid and non-NULL */ + unsigned isSynthUsing :1; /* u3.pUsing is synthesized from NATURAL */ + unsigned isNestedFrom :1; /* pSelect is a SF_NestedFrom subquery */ + } fg; + int iCursor; /* The VDBE cursor number used to access this table */ + union { + Expr *pOn; /* fg.isUsing==0 => The ON clause of a join */ + IdList *pUsing; /* fg.isUsing==1 => The USING clause of a join */ + } u3; + Bitmask colUsed; /* Bit N set if column N used. Details above for N>62 */ + union { + char *zIndexedBy; /* Identifier from "INDEXED BY " clause */ + ExprList *pFuncArg; /* Arguments to table-valued-function */ + } u1; + union { + Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ + CteUse *pCteUse; /* CTE Usage info when fg.isCte is true */ + } u2; +}; + +/* +** The OnOrUsing object represents either an ON clause or a USING clause. +** It can never be both at the same time, but it can be neither. +*/ +struct OnOrUsing { + Expr *pOn; /* The ON clause of a join */ + IdList *pUsing; /* The USING clause of a join */ +}; + +/* +** This object represents one or more tables that are the source of +** content for an SQL statement. For example, a single SrcList object +** is used to hold the FROM clause of a SELECT statement. SrcList also +** represents the target tables for DELETE, INSERT, and UPDATE statements. +** */ struct SrcList { int nSrc; /* Number of tables or subqueries in the FROM clause */ u32 nAlloc; /* Number of entries allocated in a[] below */ - struct SrcList_item { - Schema *pSchema; /* Schema to which this item is fixed */ - char *zDatabase; /* Name of database holding this table */ - char *zName; /* Name of the table */ - char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */ - Table *pTab; /* An SQL table corresponding to zName */ - Select *pSelect; /* A SELECT statement used in place of a table name */ - int addrFillSub; /* Address of subroutine to manifest a subquery */ - int regReturn; /* Register holding return address of addrFillSub */ - int regResult; /* Registers holding results of a co-routine */ - struct { - u8 jointype; /* Type of join between this table and the previous */ - unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ - unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ - unsigned isTabFunc :1; /* True if table-valued-function syntax */ - unsigned isCorrelated :1; /* True if sub-query is correlated */ - unsigned viaCoroutine :1; /* Implemented as a co-routine */ - unsigned isRecursive :1; /* True for recursive reference in WITH */ - } fg; - int iCursor; /* The VDBE cursor number used to access this table */ - Expr *pOn; /* The ON clause of a join */ - IdList *pUsing; /* The USING clause of a join */ - Bitmask colUsed; /* Bit N (1<" clause */ - ExprList *pFuncArg; /* Arguments to table-valued-function */ - } u1; - Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ - } a[1]; /* One entry for each identifier on the list */ + SrcItem a[1]; /* One entry for each identifier on the list */ }; /* ** Permitted values of the SrcList.a.jointype field */ -#define JT_INNER 0x0001 /* Any kind of inner or cross join */ -#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */ -#define JT_NATURAL 0x0004 /* True for a "natural" join */ -#define JT_LEFT 0x0008 /* Left outer join */ -#define JT_RIGHT 0x0010 /* Right outer join */ -#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */ -#define JT_ERROR 0x0040 /* unknown or unsupported join type */ - +#define JT_INNER 0x01 /* Any kind of inner or cross join */ +#define JT_CROSS 0x02 /* Explicit use of the CROSS keyword */ +#define JT_NATURAL 0x04 /* True for a "natural" join */ +#define JT_LEFT 0x08 /* Left outer join */ +#define JT_RIGHT 0x10 /* Right outer join */ +#define JT_OUTER 0x20 /* The "OUTER" keyword is present */ +#define JT_LTORJ 0x40 /* One of the LEFT operands of a RIGHT JOIN + ** Mnemonic: Left Table Of Right Join */ +#define JT_ERROR 0x80 /* unknown or unsupported join type */ /* ** Flags appropriate for the wctrlFlags parameter of sqlite3WhereBegin() @@ -17191,9 +18973,9 @@ struct SrcList { #define WHERE_DISTINCTBY 0x0080 /* pOrderby is really a DISTINCT clause */ #define WHERE_WANT_DISTINCT 0x0100 /* All output needs to be distinct */ #define WHERE_SORTBYGROUP 0x0200 /* Support sqlite3WhereIsSorted() */ -#define WHERE_SEEK_TABLE 0x0400 /* Do not defer seeks on main table */ +#define WHERE_AGG_DISTINCT 0x0400 /* Query is "SELECT agg(DISTINCT ...)" */ #define WHERE_ORDERBY_LIMIT 0x0800 /* ORDERBY+LIMIT on the inner loop */ -#define WHERE_SEEK_UNIQ_TABLE 0x1000 /* Do not defer seeks if unique */ +#define WHERE_RIGHT_JOIN 0x1000 /* Processing a RIGHT JOIN */ /* 0x2000 not currently used */ #define WHERE_USE_LIMIT 0x4000 /* Use the LIMIT in cost estimates */ /* 0x8000 not currently used */ @@ -17233,33 +19015,46 @@ struct NameContext { ExprList *pEList; /* Optional list of result-set columns */ AggInfo *pAggInfo; /* Information about aggregates at this level */ Upsert *pUpsert; /* ON CONFLICT clause information from an upsert */ + int iBaseReg; /* For TK_REGISTER when parsing RETURNING */ } uNC; NameContext *pNext; /* Next outer name context. NULL for outermost */ int nRef; /* Number of names resolved by this context */ - int nErr; /* Number of errors encountered while resolving names */ - u16 ncFlags; /* Zero or more NC_* flags defined below */ + int nNcErr; /* Number of errors encountered while resolving names */ + int ncFlags; /* Zero or more NC_* flags defined below */ + Select *pWinSelect; /* SELECT statement for any window functions */ }; /* ** Allowed values for the NameContext, ncFlags field. ** ** Value constraints (all checked via assert()): -** NC_HasAgg == SF_HasAgg -** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX +** NC_HasAgg == SF_HasAgg == EP_Agg +** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX +** NC_OrderAgg == SF_OrderByReqd == SQLITE_FUNC_ANYORDER +** NC_HasWin == EP_Win ** */ -#define NC_AllowAgg 0x0001 /* Aggregate functions are allowed here */ -#define NC_PartIdx 0x0002 /* True if resolving a partial index WHERE */ -#define NC_IsCheck 0x0004 /* True if resolving names in a CHECK constraint */ -#define NC_InAggFunc 0x0008 /* True if analyzing arguments to an agg func */ -#define NC_HasAgg 0x0010 /* One or more aggregate functions seen */ -#define NC_IdxExpr 0x0020 /* True if resolving columns of CREATE INDEX */ -#define NC_VarSelect 0x0040 /* A correlated subquery has been seen */ -#define NC_UEList 0x0080 /* True if uNC.pEList is used */ -#define NC_UAggInfo 0x0100 /* True if uNC.pAggInfo is used */ -#define NC_UUpsert 0x0200 /* True if uNC.pUpsert is used */ -#define NC_MinMaxAgg 0x1000 /* min/max aggregates seen. See note above */ -#define NC_Complex 0x2000 /* True if a function or subquery seen */ +#define NC_AllowAgg 0x000001 /* Aggregate functions are allowed here */ +#define NC_PartIdx 0x000002 /* True if resolving a partial index WHERE */ +#define NC_IsCheck 0x000004 /* True if resolving a CHECK constraint */ +#define NC_GenCol 0x000008 /* True for a GENERATED ALWAYS AS clause */ +#define NC_HasAgg 0x000010 /* One or more aggregate functions seen */ +#define NC_IdxExpr 0x000020 /* True if resolving columns of CREATE INDEX */ +#define NC_SelfRef 0x00002e /* Combo: PartIdx, isCheck, GenCol, and IdxExpr */ +#define NC_Subquery 0x000040 /* A subquery has been seen */ +#define NC_UEList 0x000080 /* True if uNC.pEList is used */ +#define NC_UAggInfo 0x000100 /* True if uNC.pAggInfo is used */ +#define NC_UUpsert 0x000200 /* True if uNC.pUpsert is used */ +#define NC_UBaseReg 0x000400 /* True if uNC.iBaseReg is used */ +#define NC_MinMaxAgg 0x001000 /* min/max aggregates seen. See note above */ +#define NC_Complex 0x002000 /* True if a function or subquery seen */ +#define NC_AllowWin 0x004000 /* Window functions are allowed here */ +#define NC_HasWin 0x008000 /* One or more window functions seen */ +#define NC_IsDDL 0x010000 /* Resolving names in a CREATE statement */ +#define NC_InAggFunc 0x020000 /* True if analyzing arguments to an agg func */ +#define NC_FromDDL 0x040000 /* SQL text comes from sqlite_schema */ +#define NC_NoSelect 0x080000 /* Do not descend into sub-selects */ +#define NC_OrderAgg 0x8000000 /* Has an aggregate other than count/min/max */ /* ** An instance of the following object describes a single ON CONFLICT @@ -17270,21 +19065,27 @@ struct NameContext { ** conflict-target clause.) The pUpsertTargetWhere is the optional ** WHERE clause used to identify partial unique indexes. ** -** pUpsertSet is the list of column=expr terms of the UPDATE statement. +** pUpsertSet is the list of column=expr terms of the UPDATE statement. ** The pUpsertSet field is NULL for a ON CONFLICT DO NOTHING. The ** pUpsertWhere is the WHERE clause for the UPDATE and is NULL if the ** WHERE clause is omitted. */ struct Upsert { - ExprList *pUpsertTarget; /* Optional description of conflicting index */ + ExprList *pUpsertTarget; /* Optional description of conflict target */ Expr *pUpsertTargetWhere; /* WHERE clause for partial index targets */ ExprList *pUpsertSet; /* The SET clause from an ON CONFLICT UPDATE */ Expr *pUpsertWhere; /* WHERE clause for the ON CONFLICT UPDATE */ - /* The fields above comprise the parse tree for the upsert clause. - ** The fields below are used to transfer information from the INSERT - ** processing down into the UPDATE processing while generating code. - ** Upsert owns the memory allocated above, but not the memory below. */ - Index *pUpsertIdx; /* Constraint that pUpsertTarget identifies */ + Upsert *pNextUpsert; /* Next ON CONFLICT clause in the list */ + u8 isDoUpdate; /* True for DO UPDATE. False for DO NOTHING */ + /* Above this point is the parse tree for the ON CONFLICT clauses. + ** The next group of fields stores intermediate data. */ + void *pToFree; /* Free memory when deleting the Upsert object */ + /* All fields above are owned by the Upsert object and must be freed + ** when the Upsert is destroyed. The fields below are used to transfer + ** information from the INSERT processing down into the UPDATE processing + ** while generating code. The fields below are owned by the INSERT + ** statement and will be freed by INSERT processing. */ + Index *pUpsertIdx; /* UNIQUE constraint specified by pUpsertTarget */ SrcList *pUpsertSrc; /* Table to be updated */ int regData; /* First register holding array of VALUES */ int iDataCur; /* Index of the data cursor */ @@ -17309,15 +19110,13 @@ struct Upsert { ** sequences for the ORDER BY clause. */ struct Select { - ExprList *pEList; /* The fields of the result */ u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */ LogEst nSelectRow; /* Estimated number of result rows */ u32 selFlags; /* Various SF_* values */ int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */ -#if SELECTTRACE_ENABLED - char zSelName[12]; /* Symbolic name of this SELECT use for debugging */ -#endif + u32 selId; /* Unique identifier number for this SELECT */ int addrOpenEphm[2]; /* OP_OpenEphem opcodes related to this select */ + ExprList *pEList; /* The fields of the result */ SrcList *pSrc; /* The FROM clause */ Expr *pWhere; /* The WHERE clause */ ExprList *pGroupBy; /* The GROUP BY clause */ @@ -17327,6 +19126,10 @@ struct Select { Select *pNext; /* Next select to the left in a compound */ Expr *pLimit; /* LIMIT expression. NULL means not used. */ With *pWith; /* WITH clause attached to this select. Or NULL. */ +#ifndef SQLITE_OMIT_WINDOWFUNC + Window *pWin; /* List of window functions */ + Window *pWinDefn; /* List of named window definitions */ +#endif }; /* @@ -17334,29 +19137,43 @@ struct Select { ** "Select Flag". ** ** Value constraints (all checked via assert()) -** SF_HasAgg == NC_HasAgg -** SF_MinMaxAgg == NC_MinMaxAgg == SQLITE_FUNC_MINMAX -** SF_FixedLimit == WHERE_USE_LIMIT +** SF_HasAgg == NC_HasAgg +** SF_MinMaxAgg == NC_MinMaxAgg == SQLITE_FUNC_MINMAX +** SF_OrderByReqd == NC_OrderAgg == SQLITE_FUNC_ANYORDER +** SF_FixedLimit == WHERE_USE_LIMIT */ -#define SF_Distinct 0x00001 /* Output should be DISTINCT */ -#define SF_All 0x00002 /* Includes the ALL keyword */ -#define SF_Resolved 0x00004 /* Identifiers have been resolved */ -#define SF_Aggregate 0x00008 /* Contains agg functions or a GROUP BY */ -#define SF_HasAgg 0x00010 /* Contains aggregate functions */ -#define SF_UsesEphemeral 0x00020 /* Uses the OpenEphemeral opcode */ -#define SF_Expanded 0x00040 /* sqlite3SelectExpand() called on this */ -#define SF_HasTypeInfo 0x00080 /* FROM subqueries have Table metadata */ -#define SF_Compound 0x00100 /* Part of a compound query */ -#define SF_Values 0x00200 /* Synthesized from VALUES clause */ -#define SF_MultiValue 0x00400 /* Single VALUES term with multiple rows */ -#define SF_NestedFrom 0x00800 /* Part of a parenthesized FROM clause */ -#define SF_MinMaxAgg 0x01000 /* Aggregate containing min() or max() */ -#define SF_Recursive 0x02000 /* The recursive part of a recursive CTE */ -#define SF_FixedLimit 0x04000 /* nSelectRow set by a constant LIMIT */ -#define SF_MaybeConvert 0x08000 /* Need convertCompoundSelectToSubquery() */ -#define SF_Converted 0x10000 /* By convertCompoundSelectToSubquery() */ -#define SF_IncludeHidden 0x20000 /* Include hidden columns in output */ -#define SF_ComplexResult 0x40000 /* Result contains subquery or function */ +#define SF_Distinct 0x0000001 /* Output should be DISTINCT */ +#define SF_All 0x0000002 /* Includes the ALL keyword */ +#define SF_Resolved 0x0000004 /* Identifiers have been resolved */ +#define SF_Aggregate 0x0000008 /* Contains agg functions or a GROUP BY */ +#define SF_HasAgg 0x0000010 /* Contains aggregate functions */ +#define SF_UsesEphemeral 0x0000020 /* Uses the OpenEphemeral opcode */ +#define SF_Expanded 0x0000040 /* sqlite3SelectExpand() called on this */ +#define SF_HasTypeInfo 0x0000080 /* FROM subqueries have Table metadata */ +#define SF_Compound 0x0000100 /* Part of a compound query */ +#define SF_Values 0x0000200 /* Synthesized from VALUES clause */ +#define SF_MultiValue 0x0000400 /* Single VALUES term with multiple rows */ +#define SF_NestedFrom 0x0000800 /* Part of a parenthesized FROM clause */ +#define SF_MinMaxAgg 0x0001000 /* Aggregate containing min() or max() */ +#define SF_Recursive 0x0002000 /* The recursive part of a recursive CTE */ +#define SF_FixedLimit 0x0004000 /* nSelectRow set by a constant LIMIT */ +#define SF_MaybeConvert 0x0008000 /* Need convertCompoundSelectToSubquery() */ +#define SF_Converted 0x0010000 /* By convertCompoundSelectToSubquery() */ +#define SF_IncludeHidden 0x0020000 /* Include hidden columns in output */ +#define SF_ComplexResult 0x0040000 /* Result contains subquery or function */ +#define SF_WhereBegin 0x0080000 /* Really a WhereBegin() call. Debug Only */ +#define SF_WinRewrite 0x0100000 /* Window function rewrite accomplished */ +#define SF_View 0x0200000 /* SELECT statement is a view */ +#define SF_NoopOrderBy 0x0400000 /* ORDER BY is ignored for this query */ +#define SF_UFSrcCheck 0x0800000 /* Check pSrc as required by UPDATE...FROM */ +#define SF_PushDown 0x1000000 /* SELECT has be modified by push-down opt */ +#define SF_MultiPart 0x2000000 /* Has multiple incompatible PARTITIONs */ +#define SF_CopyCte 0x4000000 /* SELECT statement is a copy of a CTE */ +#define SF_OrderByReqd 0x8000000 /* The ORDER BY clause may not be omitted */ +#define SF_UpdateFrom 0x10000000 /* Query originates with UPDATE FROM */ + +/* True if S exists and has SF_NestedFrom */ +#define IsNestedFrom(S) ((S)!=0 && ((S)->selFlags&SF_NestedFrom)!=0) /* ** The results of a SELECT can be distributed in several ways, as defined @@ -17375,9 +19192,6 @@ struct Select { ** statements within triggers whose only purpose is ** the side-effects of functions. ** -** All of the above are free to ignore their ORDER BY clause. Those that -** follow must honor the ORDER BY clause. -** ** SRT_Output Generate a row of output (using the OP_ResultRow ** opcode) for each row in the result set. ** @@ -17421,18 +19235,31 @@ struct Select { ** SRT_DistQueue Store results in priority queue pDest->iSDParm only if ** the same record has never been stored before. The ** index at pDest->iSDParm+1 hold all prior stores. +** +** SRT_Upfrom Store results in the temporary table already opened by +** pDest->iSDParm. If (pDest->iSDParm<0), then the temp +** table is an intkey table - in this case the first +** column returned by the SELECT is used as the integer +** key. If (pDest->iSDParm>0), then the table is an index +** table. (pDest->iSDParm) is the number of key columns in +** each index record in this case. */ #define SRT_Union 1 /* Store result as keys in an index */ #define SRT_Except 2 /* Remove result from a UNION index */ #define SRT_Exists 3 /* Store 1 if the result is not empty */ #define SRT_Discard 4 /* Do not save the results anywhere */ -#define SRT_Fifo 5 /* Store result as data with an automatic rowid */ -#define SRT_DistFifo 6 /* Like SRT_Fifo, but unique results only */ +#define SRT_DistFifo 5 /* Like SRT_Fifo, but unique results only */ +#define SRT_DistQueue 6 /* Like SRT_Queue, but unique results only */ + +/* The DISTINCT clause is ignored for all of the above. Not that +** IgnorableDistinct() implies IgnorableOrderby() */ +#define IgnorableDistinct(X) ((X->eDest)<=SRT_DistQueue) + #define SRT_Queue 7 /* Store result in an queue */ -#define SRT_DistQueue 8 /* Like SRT_Queue, but unique results only */ +#define SRT_Fifo 8 /* Store result as data with an automatic rowid */ /* The ORDER BY clause is ignored for all of the above */ -#define IgnorableOrderby(X) ((X->eDest)<=SRT_DistQueue) +#define IgnorableOrderby(X) ((X->eDest)<=SRT_Fifo) #define SRT_Output 9 /* Output each row of result */ #define SRT_Mem 10 /* Store result in a memory cell */ @@ -17440,17 +19267,19 @@ struct Select { #define SRT_EphemTab 12 /* Create transient tab and store like SRT_Table */ #define SRT_Coroutine 13 /* Generate a single row of result */ #define SRT_Table 14 /* Store result as data with an automatic rowid */ +#define SRT_Upfrom 15 /* Store result as data with rowid */ /* ** An instance of this object describes where to put of the results of ** a SELECT statement. */ struct SelectDest { - u8 eDest; /* How to dispose of the results. On of SRT_* above. */ + u8 eDest; /* How to dispose of the results. One of SRT_* above. */ int iSDParm; /* A parameter used by the eDest disposal method */ + int iSDParm2; /* A second parameter for the eDest disposal method */ int iSdst; /* Base register where results are written */ int nSdst; /* Number of registers allocated */ - char *zAffSdst; /* Affinity used when eDest==SRT_Set */ + char *zAffSdst; /* Affinity used for SRT_Set */ ExprList *pOrderBy; /* Key columns for SRT_Queue and SRT_DistQueue */ }; @@ -17470,13 +19299,6 @@ struct AutoincInfo { int regCtr; /* Memory register holding the rowid counter */ }; -/* -** Size of the column cache -*/ -#ifndef SQLITE_N_COLCACHE -# define SQLITE_N_COLCACHE 10 -#endif - /* ** At least one instance of the following structure is created for each ** trigger that may be fired while parsing an INSERT, UPDATE or DELETE @@ -17516,12 +19338,46 @@ struct TriggerPrg { #else typedef unsigned int yDbMask; # define DbMaskTest(M,I) (((M)&(((yDbMask)1)<<(I)))!=0) -# define DbMaskZero(M) (M)=0 -# define DbMaskSet(M,I) (M)|=(((yDbMask)1)<<(I)) -# define DbMaskAllZero(M) (M)==0 -# define DbMaskNonZero(M) (M)!=0 +# define DbMaskZero(M) ((M)=0) +# define DbMaskSet(M,I) ((M)|=(((yDbMask)1)<<(I))) +# define DbMaskAllZero(M) ((M)==0) +# define DbMaskNonZero(M) ((M)!=0) #endif +/* +** For each index X that has as one of its arguments either an expression +** or the name of a virtual generated column, and if X is in scope such that +** the value of the expression can simply be read from the index, then +** there is an instance of this object on the Parse.pIdxExpr list. +** +** During code generation, while generating code to evaluate expressions, +** this list is consulted and if a matching expression is found, the value +** is read from the index rather than being recomputed. +*/ +struct IndexedExpr { + Expr *pExpr; /* The expression contained in the index */ + int iDataCur; /* The data cursor associated with the index */ + int iIdxCur; /* The index cursor */ + int iIdxCol; /* The index column that contains value of pExpr */ + u8 bMaybeNullRow; /* True if we need an OP_IfNullRow check */ + u8 aff; /* Affinity of the pExpr expression */ + IndexedExpr *pIENext; /* Next in a list of all indexed expressions */ +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + const char *zIdxName; /* Name of index, used only for bytecode comments */ +#endif +}; + +/* +** An instance of the ParseCleanup object specifies an operation that +** should be performed after parsing to deallocation resources obtained +** during the parse and which are no longer needed. +*/ +struct ParseCleanup { + ParseCleanup *pNext; /* Next cleanup task */ + void *pPtr; /* Pointer to object to deallocate */ + void (*xCleanup)(sqlite3*,void*); /* Deallocation routine */ +}; + /* ** An SQL parser context. A copy of this structure is passed through ** the parser and down into all the parser action routine in order to @@ -17552,29 +19408,36 @@ struct Parse { u8 hasCompound; /* Need to invoke convertCompoundSelectToSubquery() */ u8 okConstFactor; /* OK to factor out constants */ u8 disableLookaside; /* Number of times lookaside has been disabled */ - u8 nColCache; /* Number of entries in aColCache[] */ + u8 prepFlags; /* SQLITE_PREPARE_* flags */ + u8 withinRJSubrtn; /* Nesting level for RIGHT JOIN body subroutines */ +#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) + u8 earlyCleanup; /* OOM inside sqlite3ParserAddCleanup() */ +#endif +#ifdef SQLITE_DEBUG + u8 ifNotExists; /* Might be true if IF NOT EXISTS. Assert()s only */ +#endif int nRangeReg; /* Size of the temporary register block */ int iRangeReg; /* First register in temporary register block */ int nErr; /* Number of errors seen */ int nTab; /* Number of previously allocated VDBE cursors */ int nMem; /* Number of memory cells used so far */ - int nOpAlloc; /* Number of slots allocated for Vdbe.aOp[] */ int szOpAlloc; /* Bytes of memory space allocated for Vdbe.aOp[] */ int iSelfTab; /* Table associated with an index on expr, or negative ** of the base register during check-constraint eval */ - int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */ - int iCacheCnt; /* Counter used to generate aColCache[].lru values */ - int nLabel; /* Number of labels used */ + int nLabel; /* The *negative* of the number of labels used */ + int nLabelAlloc; /* Number of slots in aLabel */ int *aLabel; /* Space to hold the labels */ ExprList *pConstExpr;/* Constant expressions */ + IndexedExpr *pIdxEpr;/* List of expressions used by active indexes */ Token constraintName;/* Name of the constraint currently being parsed */ yDbMask writeMask; /* Start a write transaction on these databases */ yDbMask cookieMask; /* Bitmask of schema verified databases */ int regRowid; /* Register holding rowid of CREATE TABLE entry */ int regRoot; /* Register holding root page number for new objects */ int nMaxArg; /* Max args passed to user function by sub-program */ -#if SELECTTRACE_ENABLED - int nSelect; /* Number of SELECT statements seen */ + int nSelect; /* Number of SELECT stmts. Counter for Select.selId */ +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK + u32 nProgressSteps; /* xProgress steps taken during sqlite3_prepare() */ #endif #ifndef SQLITE_OMIT_SHARED_CACHE int nTableLock; /* Number of locks in aTableLock */ @@ -17583,11 +19446,17 @@ struct Parse { AutoincInfo *pAinc; /* Information about AUTOINCREMENT counters */ Parse *pToplevel; /* Parse structure for main program (or NULL) */ Table *pTriggerTab; /* Table triggers are being coded for */ - int addrCrTab; /* Address of OP_CreateBtree opcode on CREATE TABLE */ - u32 nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */ + TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */ + ParseCleanup *pCleanup; /* List of cleanup operations to run after parse */ + union { + int addrCrTab; /* Address of OP_CreateBtree on CREATE TABLE */ + Returning *pReturning; /* The RETURNING clause */ + } u1; u32 oldmask; /* Mask of old.* columns referenced */ u32 newmask; /* Mask of new.* columns referenced */ + LogEst nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */ u8 eTriggerOp; /* TK_UPDATE, TK_INSERT or TK_DELETE */ + u8 bReturning; /* Coding a RETURNING trigger */ u8 eOrconf; /* Default ON CONFLICT policy for trigger steps */ u8 disableTriggers; /* True to disable triggers */ @@ -17595,18 +19464,11 @@ struct Parse { ** Fields above must be initialized to zero. The fields that follow, ** down to the beginning of the recursive section, do not need to be ** initialized as they will be set before being used. The boundary is - ** determined by offsetof(Parse,aColCache). + ** determined by offsetof(Parse,aTempReg). **************************************************************************/ - struct yColCache { - int iTable; /* Table cursor number */ - i16 iColumn; /* Table column number */ - u8 tempReg; /* iReg is a temp register that needs to be freed */ - int iLevel; /* Nesting level */ - int iReg; /* Reg with value of this column. 0 means none. */ - int lru; /* Least recently used entry has the smallest value */ - } aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */ int aTempReg[8]; /* Holding area for temporary registers */ + Parse *pOuterParse; /* Outer Parse object when nested */ Token sNameToken; /* Token with unqualified schema object name */ /************************************************************************ @@ -17620,8 +19482,8 @@ struct Parse { ynVar nVar; /* Number of '?' variables seen in the SQL so far */ u8 iPkSortOrder; /* ASC or DESC for INTEGER PRIMARY KEY */ u8 explain; /* True if the EXPLAIN flag is found on the query */ + u8 eParseMode; /* PARSE_MODE_XXX constant */ #ifndef SQLITE_OMIT_VIRTUALTABLE - u8 declareVtab; /* True if inside sqlite3_declare_vtab() */ int nVtabLock; /* Number of virtual tables to lock */ #endif int nHeight; /* Expression tree height of current sub-select */ @@ -17632,22 +19494,33 @@ struct Parse { Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */ const char *zTail; /* All SQL text past the last semicolon parsed */ Table *pNewTable; /* A table being constructed by CREATE TABLE */ + Index *pNewIndex; /* An index being constructed by CREATE INDEX. + ** Also used to hold redundant UNIQUE constraints + ** during a RENAME COLUMN */ Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */ const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */ #ifndef SQLITE_OMIT_VIRTUALTABLE Token sArg; /* Complete text of a module argument */ Table **apVtabLock; /* Pointer to virtual tables needing locking */ #endif - Table *pZombieTab; /* List of Table objects to delete after code gen */ - TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */ With *pWith; /* Current WITH clause, or NULL */ - With *pWithToFree; /* Free this WITH object at the end of the parse */ +#ifndef SQLITE_OMIT_ALTERTABLE + RenameToken *pRename; /* Tokens subject to renaming by ALTER TABLE */ +#endif }; +/* Allowed values for Parse.eParseMode +*/ +#define PARSE_MODE_NORMAL 0 +#define PARSE_MODE_DECLARE_VTAB 1 +#define PARSE_MODE_RENAME 2 +#define PARSE_MODE_UNMAP 3 + /* ** Sizes and pointers of various parts of the Parse object. */ -#define PARSE_HDR_SZ offsetof(Parse,aColCache) /* Recursive part w/o aColCache*/ +#define PARSE_HDR(X) (((char*)(X))+offsetof(Parse,zErrMsg)) +#define PARSE_HDR_SZ (offsetof(Parse,aTempReg)-offsetof(Parse,zErrMsg)) /* Recursive part w/o aColCache*/ #define PARSE_RECURSE_SZ offsetof(Parse,sLastToken) /* Recursive part */ #define PARSE_TAIL_SZ (sizeof(Parse)-PARSE_RECURSE_SZ) /* Non-recursive part */ #define PARSE_TAIL(X) (((char*)(X))+PARSE_RECURSE_SZ) /* Pointer to tail */ @@ -17658,7 +19531,19 @@ struct Parse { #ifdef SQLITE_OMIT_VIRTUALTABLE #define IN_DECLARE_VTAB 0 #else - #define IN_DECLARE_VTAB (pParse->declareVtab) + #define IN_DECLARE_VTAB (pParse->eParseMode==PARSE_MODE_DECLARE_VTAB) +#endif + +#if defined(SQLITE_OMIT_ALTERTABLE) + #define IN_RENAME_OBJECT 0 +#else + #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME) +#endif + +#if defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE) + #define IN_SPECIAL_PARSE 0 +#else + #define IN_SPECIAL_PARSE (pParse->eParseMode!=PARSE_MODE_NORMAL) #endif /* @@ -17684,6 +19569,7 @@ struct AuthContext { */ #define OPFLAG_NCHANGE 0x01 /* OP_Insert: Set to update db->nChange */ /* Also used in P2 (not P5) of OP_Delete */ +#define OPFLAG_NOCHNG 0x01 /* OP_VColumn nochange for UPDATE */ #define OPFLAG_EPHEM 0x01 /* OP_Column: Ephemeral output is ok */ #define OPFLAG_LASTROWID 0x20 /* Set to update db->lastRowid */ #define OPFLAG_ISUPDATE 0x04 /* This OP_Insert is an sql UPDATE */ @@ -17692,6 +19578,7 @@ struct AuthContext { #define OPFLAG_ISNOOP 0x40 /* OP_Delete does pre-update-hook only */ #define OPFLAG_LENGTHARG 0x40 /* OP_Column only used for length() */ #define OPFLAG_TYPEOFARG 0x80 /* OP_Column only used for typeof() */ +#define OPFLAG_BYTELENARG 0xc0 /* OP_Column only for octet_length() */ #define OPFLAG_BULKCSR 0x01 /* OP_Open** used to open bulk cursor */ #define OPFLAG_SEEKEQ 0x02 /* OP_Open** cursor uses EQ seek only */ #define OPFLAG_FORDELETE 0x08 /* OP_Open should use BTREE_FORDELETE */ @@ -17700,27 +19587,29 @@ struct AuthContext { #define OPFLAG_SAVEPOSITION 0x02 /* OP_Delete/Insert: save cursor pos */ #define OPFLAG_AUXDELETE 0x04 /* OP_Delete: index in a DELETE op */ #define OPFLAG_NOCHNG_MAGIC 0x6d /* OP_MakeRecord: serialtype 10 is ok */ +#define OPFLAG_PREFORMAT 0x80 /* OP_Insert uses preformatted cell */ /* - * Each trigger present in the database schema is stored as an instance of - * struct Trigger. - * - * Pointers to instances of struct Trigger are stored in two ways. - * 1. In the "trigHash" hash table (part of the sqlite3* that represents the - * database). This allows Trigger structures to be retrieved by name. - * 2. All triggers associated with a single table form a linked list, using the - * pNext member of struct Trigger. A pointer to the first element of the - * linked list is stored as the "pTrigger" member of the associated - * struct Table. - * - * The "step_list" member points to the first element of a linked list - * containing the SQL statements specified as the trigger program. - */ +** Each trigger present in the database schema is stored as an instance of +** struct Trigger. +** +** Pointers to instances of struct Trigger are stored in two ways. +** 1. In the "trigHash" hash table (part of the sqlite3* that represents the +** database). This allows Trigger structures to be retrieved by name. +** 2. All triggers associated with a single table form a linked list, using the +** pNext member of struct Trigger. A pointer to the first element of the +** linked list is stored as the "pTrigger" member of the associated +** struct Table. +** +** The "step_list" member points to the first element of a linked list +** containing the SQL statements specified as the trigger program. +*/ struct Trigger { char *zName; /* The name of the trigger */ char *table; /* The table or view to which the trigger applies */ u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */ u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */ + u8 bReturning; /* This trigger implements a RETURNING clause */ Expr *pWhen; /* The WHEN clause of the expression (may be NULL) */ IdList *pColumns; /* If this is an UPDATE OF trigger, the is stored here */ @@ -17741,51 +19630,58 @@ struct Trigger { #define TRIGGER_AFTER 2 /* - * An instance of struct TriggerStep is used to store a single SQL statement - * that is a part of a trigger-program. - * - * Instances of struct TriggerStep are stored in a singly linked list (linked - * using the "pNext" member) referenced by the "step_list" member of the - * associated struct Trigger instance. The first element of the linked list is - * the first step of the trigger-program. - * - * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or - * "SELECT" statement. The meanings of the other members is determined by the - * value of "op" as follows: - * - * (op == TK_INSERT) - * orconf -> stores the ON CONFLICT algorithm - * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then - * this stores a pointer to the SELECT statement. Otherwise NULL. - * zTarget -> Dequoted name of the table to insert into. - * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then - * this stores values to be inserted. Otherwise NULL. - * pIdList -> If this is an INSERT INTO ... () VALUES ... - * statement, then this stores the column-names to be - * inserted into. - * - * (op == TK_DELETE) - * zTarget -> Dequoted name of the table to delete from. - * pWhere -> The WHERE clause of the DELETE statement if one is specified. - * Otherwise NULL. - * - * (op == TK_UPDATE) - * zTarget -> Dequoted name of the table to update. - * pWhere -> The WHERE clause of the UPDATE statement if one is specified. - * Otherwise NULL. - * pExprList -> A list of the columns to update and the expressions to update - * them to. See sqlite3Update() documentation of "pChanges" - * argument. - * - */ +** An instance of struct TriggerStep is used to store a single SQL statement +** that is a part of a trigger-program. +** +** Instances of struct TriggerStep are stored in a singly linked list (linked +** using the "pNext" member) referenced by the "step_list" member of the +** associated struct Trigger instance. The first element of the linked list is +** the first step of the trigger-program. +** +** The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or +** "SELECT" statement. The meanings of the other members is determined by the +** value of "op" as follows: +** +** (op == TK_INSERT) +** orconf -> stores the ON CONFLICT algorithm +** pSelect -> The content to be inserted - either a SELECT statement or +** a VALUES clause. +** zTarget -> Dequoted name of the table to insert into. +** pIdList -> If this is an INSERT INTO ... () VALUES ... +** statement, then this stores the column-names to be +** inserted into. +** pUpsert -> The ON CONFLICT clauses for an Upsert +** +** (op == TK_DELETE) +** zTarget -> Dequoted name of the table to delete from. +** pWhere -> The WHERE clause of the DELETE statement if one is specified. +** Otherwise NULL. +** +** (op == TK_UPDATE) +** zTarget -> Dequoted name of the table to update. +** pWhere -> The WHERE clause of the UPDATE statement if one is specified. +** Otherwise NULL. +** pExprList -> A list of the columns to update and the expressions to update +** them to. See sqlite3Update() documentation of "pChanges" +** argument. +** +** (op == TK_SELECT) +** pSelect -> The SELECT statement +** +** (op == TK_RETURNING) +** pExprList -> The list of expressions that follow the RETURNING keyword. +** +*/ struct TriggerStep { - u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */ + u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT, + ** or TK_RETURNING */ u8 orconf; /* OE_Rollback etc. */ Trigger *pTrig; /* The trigger that this step is a part of */ Select *pSelect; /* SELECT statement or RHS of INSERT INTO SELECT ... */ char *zTarget; /* Target table for DELETE, UPDATE, INSERT */ + SrcList *pFrom; /* FROM clause for UPDATE statement (if any) */ Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */ - ExprList *pExprList; /* SET clause for UPDATE */ + ExprList *pExprList; /* SET clause for UPDATE, or RETURNING clause */ IdList *pIdList; /* Column names for INSERT */ Upsert *pUpsert; /* Upsert clauses on an INSERT */ char *zSpan; /* Original SQL text of this command */ @@ -17794,18 +19690,16 @@ struct TriggerStep { }; /* -** The following structure contains information used by the sqliteFix... -** routines as they walk the parse tree to make database references -** explicit. +** Information about a RETURNING clause */ -typedef struct DbFixer DbFixer; -struct DbFixer { - Parse *pParse; /* The parsing context. Error messages written here */ - Schema *pSchema; /* Fix items to this schema */ - int bVarOnly; /* Check for variable references only */ - const char *zDb; /* Make sure all objects are contained in this database */ - const char *zType; /* Type of the container - used for error messages */ - const Token *pName; /* Name of the container - used for error messages */ +struct Returning { + Parse *pParse; /* The parse that includes the RETURNING clause */ + ExprList *pReturnEL; /* List of expressions to return */ + Trigger retTrig; /* The transient trigger that implements RETURNING */ + TriggerStep retTStep; /* The trigger step */ + int iRetCur; /* Transient table holding RETURNING results */ + int nRetCol; /* Number of in pReturnEL after expansion */ + int iRetReg; /* Register array for holding a row of RETURNING */ }; /* @@ -17827,6 +19721,25 @@ struct sqlite3_str { #define isMalloced(X) (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0) +/* +** The following object is the header for an "RCStr" or "reference-counted +** string". An RCStr is passed around and used like any other char* +** that has been dynamically allocated. The important interface +** differences: +** +** 1. RCStr strings are reference counted. They are deallocated +** when the reference count reaches zero. +** +** 2. Use sqlite3RCStrUnref() to free an RCStr string rather than +** sqlite3_free() +** +** 3. Make a (read-only) copy of a read-only RCStr string using +** sqlite3RCStrRef(). +*/ +struct RCStr { + u64 nRCRef; /* Number of references */ + /* Total structure size should be a multiple of 8 bytes for alignment */ +}; /* ** A pointer to this structure is used to communicate information @@ -17837,8 +19750,35 @@ typedef struct { char **pzErrMsg; /* Error message stored here */ int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */ int rc; /* Result code stored here */ + u32 mInitFlags; /* Flags controlling error messages */ + u32 nInitRow; /* Number of rows processed */ + Pgno mxPage; /* Maximum page number. 0 for no limit. */ } InitData; +/* +** Allowed values for mInitFlags +*/ +#define INITFLAG_AlterMask 0x0003 /* Types of ALTER */ +#define INITFLAG_AlterRename 0x0001 /* Reparse after a RENAME */ +#define INITFLAG_AlterDrop 0x0002 /* Reparse after a DROP COLUMN */ +#define INITFLAG_AlterAdd 0x0003 /* Reparse after an ADD COLUMN */ + +/* Tuning parameters are set using SQLITE_TESTCTRL_TUNE and are controlled +** on debug-builds of the CLI using ".testctrl tune ID VALUE". Tuning +** parameters are for temporary use during development, to help find +** optimal values for parameters in the query planner. The should not +** be used on trunk check-ins. They are a temporary mechanism available +** for transient development builds only. +** +** Tuning parameters are numbered starting with 1. +*/ +#define SQLITE_NTUNE 6 /* Should be zero for all trunk check-ins */ +#ifdef SQLITE_DEBUG +# define Tuning(X) (sqlite3Config.aTune[(X)-1]) +#else +# define Tuning(X) 0 +#endif + /* ** Structure containing global configuration data for the SQLite library. ** @@ -17846,11 +19786,13 @@ typedef struct { */ struct Sqlite3Config { int bMemstat; /* True to enable memory status */ - int bCoreMutex; /* True to enable core mutexing */ - int bFullMutex; /* True to enable full mutexing */ - int bOpenUri; /* True to interpret filenames as URIs */ - int bUseCis; /* Use covering indices for full-scans */ - int bSmallMalloc; /* Avoid large memory allocations if true */ + u8 bCoreMutex; /* True to enable core mutexing */ + u8 bFullMutex; /* True to enable full mutexing */ + u8 bOpenUri; /* True to interpret filenames as URIs */ + u8 bUseCis; /* Use covering indices for full-scans */ + u8 bSmallMalloc; /* Avoid large memory allocations if true */ + u8 bExtraSchemaChecks; /* Verify type,name,tbl_name in schema */ + u8 bUseLongDouble; /* Make use of long double */ int mxStrlen; /* Maximum string length */ int neverCorrupt; /* Database is always well-formed */ int szLookaside; /* Default lookaside buffer size */ @@ -17889,15 +19831,24 @@ struct Sqlite3Config { /* The following callback (if not NULL) is invoked on every VDBE branch ** operation. Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE. */ - void (*xVdbeBranch)(void*,int iSrcLine,u8 eThis,u8 eMx); /* Callback */ + void (*xVdbeBranch)(void*,unsigned iSrcLine,u8 eThis,u8 eMx); /* Callback */ void *pVdbeBranchArg; /* 1st argument */ #endif +#ifndef SQLITE_OMIT_DESERIALIZE + sqlite3_int64 mxMemdbSize; /* Default max memdb size */ +#endif #ifndef SQLITE_UNTESTABLE int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */ #endif int bLocaltimeFault; /* True to fail localtime() calls */ + int (*xAltLocaltime)(const void*,void*); /* Alternative localtime() routine */ int iOnceResetThreshold; /* When to reset OP_Once counters */ u32 szSorterRef; /* Min size in bytes to use sorter-refs */ + unsigned int iPrngSeed; /* Alternative fixed seed for the PRNG */ + /* vvvv--- must be last ---vvv */ +#ifdef SQLITE_DEBUG + sqlite3_int64 aTune[SQLITE_NTUNE]; /* Tuning parameters */ +#endif }; /* @@ -17927,24 +19878,48 @@ struct Walker { int (*xSelectCallback)(Walker*,Select*); /* Callback for SELECTs */ void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */ int walkerDepth; /* Number of subqueries */ - u8 eCode; /* A small processing code */ + u16 eCode; /* A small processing code */ + u16 mWFlags; /* Use-dependent flags */ union { /* Extra data for callback */ NameContext *pNC; /* Naming context */ int n; /* A counter */ int iCur; /* A cursor number */ SrcList *pSrcList; /* FROM clause */ - struct SrcCount *pSrcCount; /* Counting column references */ struct CCurHint *pCCurHint; /* Used by codeCursorHint() */ + struct RefSrcList *pRefSrcList; /* sqlite3ReferencesSrcList() */ int *aiCol; /* array of column indexes */ struct IdxCover *pIdxCover; /* Check for index coverage */ - struct IdxExprTrans *pIdxTrans; /* Convert idxed expr to column */ ExprList *pGroupBy; /* GROUP BY clause */ Select *pSelect; /* HAVING to WHERE clause ctx */ + struct WindowRewrite *pRewrite; /* Window rewrite context */ + struct WhereConst *pConst; /* WHERE clause constants */ + struct RenameCtx *pRename; /* RENAME COLUMN context */ + struct Table *pTab; /* Table of generated column */ + struct CoveringIndexCheck *pCovIdxCk; /* Check for covering index */ + SrcItem *pSrcItem; /* A single FROM clause item */ + DbFixer *pFix; /* See sqlite3FixSelect() */ + Mem *aMem; /* See sqlite3BtreeCursorHint() */ } u; }; +/* +** The following structure contains information used by the sqliteFix... +** routines as they walk the parse tree to make database references +** explicit. +*/ +struct DbFixer { + Parse *pParse; /* The parsing context. Error messages written here */ + Walker w; /* Walker object */ + Schema *pSchema; /* Fix items to this schema */ + u8 bTemp; /* True for TEMP schema entries */ + const char *zDb; /* Make sure all objects are contained in this database */ + const char *zType; /* Type of the container - used for error messages */ + const Token *pName; /* Name of the container - used for error messages */ +}; + /* Forward declarations */ SQLITE_PRIVATE int sqlite3WalkExpr(Walker*, Expr*); +SQLITE_PRIVATE int sqlite3WalkExprNN(Walker*, Expr*); SQLITE_PRIVATE int sqlite3WalkExprList(Walker*, ExprList*); SQLITE_PRIVATE int sqlite3WalkSelect(Walker*, Select*); SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker*, Select*); @@ -17952,10 +19927,20 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker*, Select*); SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker*, Expr*); SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker*, Select*); SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker*, Select*); +SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker*,Select*); +SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker*,Select*); +SQLITE_PRIVATE void sqlite3WalkWinDefnDummyCallback(Walker*,Select*); + #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3SelectWalkAssert2(Walker*, Select*); #endif +#ifndef SQLITE_OMIT_CTE +SQLITE_PRIVATE void sqlite3SelectPopWith(Walker*, Select*); +#else +# define sqlite3SelectPopWith 0 +#endif + /* ** Return code from the parse-tree walking primitives and their ** callbacks. @@ -17965,20 +19950,56 @@ SQLITE_PRIVATE void sqlite3SelectWalkAssert2(Walker*, Select*); #define WRC_Abort 2 /* Abandon the tree walk */ /* -** An instance of this structure represents a set of one or more CTEs -** (common table expressions) created by a single WITH clause. +** A single common table expression +*/ +struct Cte { + char *zName; /* Name of this CTE */ + ExprList *pCols; /* List of explicit column names, or NULL */ + Select *pSelect; /* The definition of this CTE */ + const char *zCteErr; /* Error message for circular references */ + CteUse *pUse; /* Usage information for this CTE */ + u8 eM10d; /* The MATERIALIZED flag */ +}; + +/* +** Allowed values for the materialized flag (eM10d): +*/ +#define M10d_Yes 0 /* AS MATERIALIZED */ +#define M10d_Any 1 /* Not specified. Query planner's choice */ +#define M10d_No 2 /* AS NOT MATERIALIZED */ + +/* +** An instance of the With object represents a WITH clause containing +** one or more CTEs (common table expressions). */ struct With { - int nCte; /* Number of CTEs in the WITH clause */ - With *pOuter; /* Containing WITH clause, or NULL */ - struct Cte { /* For each CTE in the WITH clause.... */ - char *zName; /* Name of this CTE */ - ExprList *pCols; /* List of explicit column names, or NULL */ - Select *pSelect; /* The definition of this CTE */ - const char *zCteErr; /* Error message for circular references */ - } a[1]; + int nCte; /* Number of CTEs in the WITH clause */ + int bView; /* Belongs to the outermost Select of a view */ + With *pOuter; /* Containing WITH clause, or NULL */ + Cte a[1]; /* For each CTE in the WITH clause.... */ }; +/* +** The Cte object is not guaranteed to persist for the entire duration +** of code generation. (The query flattener or other parser tree +** edits might delete it.) The following object records information +** about each Common Table Expression that must be preserved for the +** duration of the parse. +** +** The CteUse objects are freed using sqlite3ParserAddCleanup() rather +** than sqlite3SelectDelete(), which is what enables them to persist +** until the end of code generation. +*/ +struct CteUse { + int nUse; /* Number of users of this CTE */ + int addrM9e; /* Start of subroutine to compute materialization */ + int regRtn; /* Return address register for addrM9e subroutine */ + int iCur; /* Ephemeral table holding the materialization */ + LogEst nRowEst; /* Estimated number of rows in the table */ + u8 eM10d; /* The MATERIALIZED flag */ +}; + + #ifdef SQLITE_DEBUG /* ** An instance of the TreeView object is used for printing the content of @@ -17990,6 +20011,84 @@ struct TreeView { }; #endif /* SQLITE_DEBUG */ +/* +** This object is used in various ways, most (but not all) related to window +** functions. +** +** (1) A single instance of this structure is attached to the +** the Expr.y.pWin field for each window function in an expression tree. +** This object holds the information contained in the OVER clause, +** plus additional fields used during code generation. +** +** (2) All window functions in a single SELECT form a linked-list +** attached to Select.pWin. The Window.pFunc and Window.pExpr +** fields point back to the expression that is the window function. +** +** (3) The terms of the WINDOW clause of a SELECT are instances of this +** object on a linked list attached to Select.pWinDefn. +** +** (4) For an aggregate function with a FILTER clause, an instance +** of this object is stored in Expr.y.pWin with eFrmType set to +** TK_FILTER. In this case the only field used is Window.pFilter. +** +** The uses (1) and (2) are really the same Window object that just happens +** to be accessible in two different ways. Use case (3) are separate objects. +*/ +struct Window { + char *zName; /* Name of window (may be NULL) */ + char *zBase; /* Name of base window for chaining (may be NULL) */ + ExprList *pPartition; /* PARTITION BY clause */ + ExprList *pOrderBy; /* ORDER BY clause */ + u8 eFrmType; /* TK_RANGE, TK_GROUPS, TK_ROWS, or 0 */ + u8 eStart; /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */ + u8 eEnd; /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */ + u8 bImplicitFrame; /* True if frame was implicitly specified */ + u8 eExclude; /* TK_NO, TK_CURRENT, TK_TIES, TK_GROUP, or 0 */ + Expr *pStart; /* Expression for " PRECEDING" */ + Expr *pEnd; /* Expression for " FOLLOWING" */ + Window **ppThis; /* Pointer to this object in Select.pWin list */ + Window *pNextWin; /* Next window function belonging to this SELECT */ + Expr *pFilter; /* The FILTER expression */ + FuncDef *pWFunc; /* The function */ + int iEphCsr; /* Partition buffer or Peer buffer */ + int regAccum; /* Accumulator */ + int regResult; /* Interim result */ + int csrApp; /* Function cursor (used by min/max) */ + int regApp; /* Function register (also used by min/max) */ + int regPart; /* Array of registers for PARTITION BY values */ + Expr *pOwner; /* Expression object this window is attached to */ + int nBufferCol; /* Number of columns in buffer table */ + int iArgCol; /* Offset of first argument for this function */ + int regOne; /* Register containing constant value 1 */ + int regStartRowid; + int regEndRowid; + u8 bExprArgs; /* Defer evaluation of window function arguments + ** due to the SQLITE_SUBTYPE flag */ +}; + +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE void sqlite3WindowDelete(sqlite3*, Window*); +SQLITE_PRIVATE void sqlite3WindowUnlinkFromSelect(Window*); +SQLITE_PRIVATE void sqlite3WindowListDelete(sqlite3 *db, Window *p); +SQLITE_PRIVATE Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*, u8); +SQLITE_PRIVATE void sqlite3WindowAttach(Parse*, Expr*, Window*); +SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin); +SQLITE_PRIVATE int sqlite3WindowCompare(const Parse*, const Window*, const Window*, int); +SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Select*); +SQLITE_PRIVATE void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int); +SQLITE_PRIVATE int sqlite3WindowRewrite(Parse*, Select*); +SQLITE_PRIVATE void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*); +SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p); +SQLITE_PRIVATE Window *sqlite3WindowListDup(sqlite3 *db, Window *p); +SQLITE_PRIVATE void sqlite3WindowFunctions(void); +SQLITE_PRIVATE void sqlite3WindowChain(Parse*, Window*, Window*); +SQLITE_PRIVATE Window *sqlite3WindowAssemble(Parse*, Window*, ExprList*, ExprList*, Token*); +#else +# define sqlite3WindowDelete(a,b) +# define sqlite3WindowFunctions() +# define sqlite3WindowAttach(a,b,c) +#endif + /* ** Assuming zIn points to the first byte of a UTF-8 character, ** advance zIn to point to the first byte of the next UTF-8 character. @@ -18017,13 +20116,16 @@ SQLITE_PRIVATE int sqlite3CantopenError(int); #ifdef SQLITE_DEBUG SQLITE_PRIVATE int sqlite3NomemError(int); SQLITE_PRIVATE int sqlite3IoerrnomemError(int); -SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno); # define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__) # define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__) -# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P)) #else # define SQLITE_NOMEM_BKPT SQLITE_NOMEM # define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM +#endif +#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO) +SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno); +# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P)) +#else # define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__) #endif @@ -18067,6 +20169,8 @@ SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno); # define sqlite3Isxdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x08) # define sqlite3Tolower(x) (sqlite3UpperToLower[(unsigned char)(x)]) # define sqlite3Isquote(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x80) +# define sqlite3JsonId1(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x42) +# define sqlite3JsonId2(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x46) #else # define sqlite3Toupper(x) toupper((unsigned char)(x)) # define sqlite3Isspace(x) isspace((unsigned char)(x)) @@ -18076,16 +20180,17 @@ SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno); # define sqlite3Isxdigit(x) isxdigit((unsigned char)(x)) # define sqlite3Tolower(x) tolower((unsigned char)(x)) # define sqlite3Isquote(x) ((x)=='"'||(x)=='\''||(x)=='['||(x)=='`') +# define sqlite3JsonId1(x) (sqlite3IsIdChar(x)&&(x)<'0') +# define sqlite3JsonId2(x) sqlite3IsIdChar(x) #endif -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS SQLITE_PRIVATE int sqlite3IsIdChar(u8); -#endif /* ** Internal function prototypes */ SQLITE_PRIVATE int sqlite3StrICmp(const char*,const char*); SQLITE_PRIVATE int sqlite3Strlen30(const char*); +#define sqlite3Strlen30NN(C) (strlen(C)&0x3fffffff) SQLITE_PRIVATE char *sqlite3ColumnType(Column*,char*); #define sqlite3StrNICmp sqlite3_strnicmp @@ -18104,8 +20209,9 @@ SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64); SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, u64); SQLITE_PRIVATE void sqlite3DbFree(sqlite3*, void*); SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3*, void*); -SQLITE_PRIVATE int sqlite3MallocSize(void*); -SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3*, void*); +SQLITE_PRIVATE void sqlite3DbNNFreeNN(sqlite3*, void*); +SQLITE_PRIVATE int sqlite3MallocSize(const void*); +SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3*, const void*); SQLITE_PRIVATE void *sqlite3PageMalloc(int); SQLITE_PRIVATE void sqlite3PageFree(void*); SQLITE_PRIVATE void sqlite3MemSetDefault(void); @@ -18124,12 +20230,14 @@ SQLITE_PRIVATE int sqlite3HeapNearlyFull(void); */ #ifdef SQLITE_USE_ALLOCA # define sqlite3StackAllocRaw(D,N) alloca(N) -# define sqlite3StackAllocZero(D,N) memset(alloca(N), 0, N) +# define sqlite3StackAllocRawNN(D,N) alloca(N) # define sqlite3StackFree(D,P) +# define sqlite3StackFreeNN(D,P) #else # define sqlite3StackAllocRaw(D,N) sqlite3DbMallocRaw(D,N) -# define sqlite3StackAllocZero(D,N) sqlite3DbMallocZero(D,N) +# define sqlite3StackAllocRawNN(D,N) sqlite3DbMallocRawNN(D,N) # define sqlite3StackFree(D,P) sqlite3DbFree(D,P) +# define sqlite3StackFreeNN(D,P) sqlite3DbFreeNN(D,P) #endif /* Do not allow both MEMSYS5 and MEMSYS3 to be defined together. If they @@ -18174,8 +20282,12 @@ SQLITE_PRIVATE void sqlite3MutexWarnOnContention(sqlite3_mutex*); #endif #ifndef SQLITE_OMIT_FLOATING_POINT +# define EXP754 (((u64)0x7ff)<<52) +# define MAN754 ((((u64)1)<<52)-1) +# define IsNaN(X) (((X)&EXP754)==EXP754 && ((X)&MAN754)!=0) SQLITE_PRIVATE int sqlite3IsNaN(double); #else +# define IsNaN(X) 0 # define sqlite3IsNaN(X) 0 #endif @@ -18189,6 +20301,20 @@ struct PrintfArguments { sqlite3_value **apArg; /* The argument values */ }; +/* +** An instance of this object receives the decoding of a floating point +** value into an approximate decimal representation. +*/ +struct FpDecode { + char sign; /* '+' or '-' */ + char isSpecial; /* 1: Infinity 2: NaN */ + int n; /* Significant digits in the decode */ + int iDP; /* Location of the decimal point */ + char *z; /* Start of significant digits */ + char zBuf[24]; /* Storage for significant digits */ +}; + +SQLITE_PRIVATE void sqlite3FpDecode(FpDecode*,double,int,int); SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...); SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list); #if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) @@ -18199,26 +20325,74 @@ SQLITE_PRIVATE void *sqlite3TestTextToPtr(const char*); #endif #if defined(SQLITE_DEBUG) +SQLITE_PRIVATE void sqlite3TreeViewLine(TreeView*, const char *zFormat, ...); SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView*, const Expr*, u8); SQLITE_PRIVATE void sqlite3TreeViewBareExprList(TreeView*, const ExprList*, const char*); SQLITE_PRIVATE void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*); +SQLITE_PRIVATE void sqlite3TreeViewBareIdList(TreeView*, const IdList*, const char*); +SQLITE_PRIVATE void sqlite3TreeViewIdList(TreeView*, const IdList*, u8, const char*); +SQLITE_PRIVATE void sqlite3TreeViewColumnList(TreeView*, const Column*, int, u8); +SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView*, const SrcList*); SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView*, const Select*, u8); SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView*, const With*, u8); +SQLITE_PRIVATE void sqlite3TreeViewUpsert(TreeView*, const Upsert*, u8); +#if TREETRACE_ENABLED +SQLITE_PRIVATE void sqlite3TreeViewDelete(const With*, const SrcList*, const Expr*, + const ExprList*,const Expr*, const Trigger*); +SQLITE_PRIVATE void sqlite3TreeViewInsert(const With*, const SrcList*, + const IdList*, const Select*, const ExprList*, + int, const Upsert*, const Trigger*); +SQLITE_PRIVATE void sqlite3TreeViewUpdate(const With*, const SrcList*, const ExprList*, + const Expr*, int, const ExprList*, const Expr*, + const Upsert*, const Trigger*); +#endif +#ifndef SQLITE_OMIT_TRIGGER +SQLITE_PRIVATE void sqlite3TreeViewTriggerStep(TreeView*, const TriggerStep*, u8, u8); +SQLITE_PRIVATE void sqlite3TreeViewTrigger(TreeView*, const Trigger*, u8, u8); +#endif +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE void sqlite3TreeViewWindow(TreeView*, const Window*, u8); +SQLITE_PRIVATE void sqlite3TreeViewWinFunc(TreeView*, const Window*, u8); +#endif +SQLITE_PRIVATE void sqlite3ShowExpr(const Expr*); +SQLITE_PRIVATE void sqlite3ShowExprList(const ExprList*); +SQLITE_PRIVATE void sqlite3ShowIdList(const IdList*); +SQLITE_PRIVATE void sqlite3ShowSrcList(const SrcList*); +SQLITE_PRIVATE void sqlite3ShowSelect(const Select*); +SQLITE_PRIVATE void sqlite3ShowWith(const With*); +SQLITE_PRIVATE void sqlite3ShowUpsert(const Upsert*); +#ifndef SQLITE_OMIT_TRIGGER +SQLITE_PRIVATE void sqlite3ShowTriggerStep(const TriggerStep*); +SQLITE_PRIVATE void sqlite3ShowTriggerStepList(const TriggerStep*); +SQLITE_PRIVATE void sqlite3ShowTrigger(const Trigger*); +SQLITE_PRIVATE void sqlite3ShowTriggerList(const Trigger*); +#endif +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE void sqlite3ShowWindow(const Window*); +SQLITE_PRIVATE void sqlite3ShowWinFunc(const Window*); +#endif #endif - SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*); +SQLITE_PRIVATE void sqlite3ProgressCheck(Parse*); SQLITE_PRIVATE void sqlite3ErrorMsg(Parse*, const char*, ...); +SQLITE_PRIVATE int sqlite3ErrorToParser(sqlite3*,int); SQLITE_PRIVATE void sqlite3Dequote(char*); +SQLITE_PRIVATE void sqlite3DequoteExpr(Expr*); +SQLITE_PRIVATE void sqlite3DequoteToken(Token*); SQLITE_PRIVATE void sqlite3TokenInit(Token*,char*); SQLITE_PRIVATE int sqlite3KeywordCode(const unsigned char*, int); -SQLITE_PRIVATE int sqlite3RunParser(Parse*, const char*, char **); +SQLITE_PRIVATE int sqlite3RunParser(Parse*, const char*); SQLITE_PRIVATE void sqlite3FinishCoding(Parse*); SQLITE_PRIVATE int sqlite3GetTempReg(Parse*); SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse*,int); SQLITE_PRIVATE int sqlite3GetTempRange(Parse*,int); SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse*,int,int); SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse*); +SQLITE_PRIVATE void sqlite3TouchRegister(Parse*,int); +#if defined(SQLITE_ENABLE_STAT4) || defined(SQLITE_DEBUG) +SQLITE_PRIVATE int sqlite3FirstAvailableRegister(Parse*,int); +#endif #ifdef SQLITE_DEBUG SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse*,int,int); #endif @@ -18227,19 +20401,26 @@ SQLITE_PRIVATE Expr *sqlite3Expr(sqlite3*,int,const char*); SQLITE_PRIVATE void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*); SQLITE_PRIVATE Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*); SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse*, Expr*, Select*); -SQLITE_PRIVATE Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*); -SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*); +SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse*,Expr*, Expr*); +SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr*); +SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, const Token*, int); +SQLITE_PRIVATE void sqlite3ExprFunctionUsable(Parse*,const Expr*,const FuncDef*); SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32); SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*); +SQLITE_PRIVATE void sqlite3ExprDeferredDelete(Parse*, Expr*); +SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*); SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); -SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int); -SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); +SQLITE_PRIVATE Select *sqlite3ExprListToValues(Parse*, int, ExprList*); +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int,int); +SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,const Token*,int); SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*); SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*); SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*); +SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index*); SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**); SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**); +SQLITE_PRIVATE int sqlite3InitOne(sqlite3*, int, char**, u32); SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); #ifndef SQLITE_OMIT_VIRTUALTABLE SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName); @@ -18248,28 +20429,43 @@ SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3*); SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int); SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*); SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*); +SQLITE_PRIVATE void sqlite3ColumnSetExpr(Parse*,Table*,Column*,Expr*); +SQLITE_PRIVATE Expr *sqlite3ColumnExpr(Table*,Column*); +SQLITE_PRIVATE void sqlite3ColumnSetColl(sqlite3*,Column*,const char*zColl); +SQLITE_PRIVATE const char *sqlite3ColumnColl(Column*); SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*); +SQLITE_PRIVATE void sqlite3GenerateColumnNames(Parse *pParse, Select *pSelect); SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**); -SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*); -SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*); -SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int); +SQLITE_PRIVATE void sqlite3SubqueryColumnTypes(Parse*,Table*,Select*,char); +SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*,char); +SQLITE_PRIVATE void sqlite3OpenSchemaTable(Parse *, int); SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*); -SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16); +SQLITE_PRIVATE i16 sqlite3TableColumnToIndex(Index*, i16); +#ifdef SQLITE_OMIT_GENERATED_COLUMNS +# define sqlite3TableColumnToStorage(T,X) (X) /* No-op pass-through */ +# define sqlite3StorageColumnToTable(T,X) (X) /* No-op pass-through */ +#else +SQLITE_PRIVATE i16 sqlite3TableColumnToStorage(Table*, i16); +SQLITE_PRIVATE i16 sqlite3StorageColumnToTable(Table*, i16); +#endif SQLITE_PRIVATE void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int); #if SQLITE_ENABLE_HIDDEN_COLUMNS SQLITE_PRIVATE void sqlite3ColumnPropertiesFromName(Table*, Column*); #else # define sqlite3ColumnPropertiesFromName(T,C) /* no-op */ #endif -SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token*,Token*); +SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token,Token); SQLITE_PRIVATE void sqlite3AddNotNull(Parse*, int); SQLITE_PRIVATE void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int); -SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*); +SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*, const char*, const char*); SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*); SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*); -SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*); +SQLITE_PRIVATE void sqlite3AddGenerated(Parse*,Expr*,Token*); +SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u32,Select*); +SQLITE_PRIVATE void sqlite3AddReturning(Parse*,ExprList*); SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*, sqlite3_vfs**,char**,char **); +#define sqlite3CodecQueryParameters(A,B,C) 0 SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*); #ifdef SQLITE_UNTESTABLE @@ -18289,8 +20485,9 @@ SQLITE_PRIVATE u32 sqlite3BitvecSize(Bitvec*); SQLITE_PRIVATE int sqlite3BitvecBuiltinTest(int,int*); #endif -SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3*, void*, unsigned int); -SQLITE_PRIVATE void sqlite3RowSetClear(RowSet*); +SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3*); +SQLITE_PRIVATE void sqlite3RowSetDelete(void*); +SQLITE_PRIVATE void sqlite3RowSetClear(void*); SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet*, i64); SQLITE_PRIVATE int sqlite3RowSetTest(RowSet*, int iBatch, i64); SQLITE_PRIVATE int sqlite3RowSetNext(RowSet*, i64*); @@ -18309,6 +20506,7 @@ SQLITE_PRIVATE int sqlite3DbMaskAllZero(yDbMask); SQLITE_PRIVATE void sqlite3DropTable(Parse*, SrcList*, int, int); SQLITE_PRIVATE void sqlite3CodeDropTable(Parse*, Table*, int, int); SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3*, Table*); +SQLITE_PRIVATE void sqlite3FreeIndex(sqlite3*, Index*); #ifndef SQLITE_OMIT_AUTOINCREMENT SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse); SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse); @@ -18317,19 +20515,24 @@ SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse); # define sqlite3AutoincrementEnd(X) #endif SQLITE_PRIVATE void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int, Upsert*); +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +SQLITE_PRIVATE void sqlite3ComputeGeneratedColumns(Parse*, int, Table*); +#endif SQLITE_PRIVATE void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*); -SQLITE_PRIVATE IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*); +SQLITE_PRIVATE IdList *sqlite3IdListAppend(Parse*, IdList*, Token*); SQLITE_PRIVATE int sqlite3IdListIndex(IdList*,const char*); -SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge(sqlite3*, SrcList*, int, int); -SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*); +SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge(Parse*, SrcList*, int, int); +SQLITE_PRIVATE SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2); +SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(Parse*, SrcList*, Token*, Token*); SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, - Token*, Select*, Expr*, IdList*); + Token*, Select*, OnOrUsing*); SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *); SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*); -SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *, struct SrcList_item *); -SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList*); +SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *, SrcItem *); +SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(Parse*,SrcList*); SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse*, SrcList*); SQLITE_PRIVATE void sqlite3IdListDelete(sqlite3*, IdList*); +SQLITE_PRIVATE void sqlite3ClearOnOrUsing(sqlite3*, OnOrUsing*); SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3*, SrcList*); SQLITE_PRIVATE Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**); SQLITE_PRIVATE void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, @@ -18340,20 +20543,23 @@ SQLITE_PRIVATE Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList Expr*,ExprList*,u32,Expr*); SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3*, Select*); SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse*, SrcList*); -SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, int); +SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, Trigger*); SQLITE_PRIVATE void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int); #if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) SQLITE_PRIVATE Expr *sqlite3LimitWhere(Parse*,SrcList*,Expr*,ExprList*,Expr*,char*); #endif +SQLITE_PRIVATE void sqlite3CodeChangeCount(Vdbe*,int,const char*); SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*, ExprList*, Expr*); SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*,Expr*,int,ExprList*,Expr*, Upsert*); -SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int); +SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*, + ExprList*,Select*,u16,int); SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*); SQLITE_PRIVATE LogEst sqlite3WhereOutputRowCount(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo*); -SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo*); +SQLITE_PRIVATE int sqlite3WhereOrderByLimitOptLabel(WhereInfo*); +SQLITE_PRIVATE void sqlite3WhereMinMaxOptEarlyOut(Vdbe*,WhereInfo*); SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereContinueLabel(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo*); @@ -18361,24 +20567,20 @@ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo*, int*); #define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */ #define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */ #define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */ +SQLITE_PRIVATE int sqlite3WhereUsesDeferredSeek(WhereInfo*); SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int); SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8); -SQLITE_PRIVATE void sqlite3ExprCodeGetColumnToReg(Parse*, Table*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse*, int, int, int); -SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse*, int, int, int); -SQLITE_PRIVATE void sqlite3ExprCachePush(Parse*); -SQLITE_PRIVATE void sqlite3ExprCachePop(Parse*); -SQLITE_PRIVATE void sqlite3ExprCacheRemove(Parse*, int, int); -SQLITE_PRIVATE void sqlite3ExprCacheClear(Parse*); -SQLITE_PRIVATE void sqlite3ExprCacheAffinityChange(Parse*, int, int); SQLITE_PRIVATE void sqlite3ExprCode(Parse*, Expr*, int); +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn(Parse*, Table*, Column*, int); +#endif SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse*, Expr*, int); SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprCodeAtInit(Parse*, Expr*, int); +SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce(Parse*, Expr*, int); SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*); SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int); -SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse*, Expr*, int); SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8); #define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */ #define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */ @@ -18391,22 +20593,24 @@ SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3*,const char*, const char*); #define LOCATE_VIEW 0x01 #define LOCATE_NOERR 0x02 SQLITE_PRIVATE Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*); -SQLITE_PRIVATE Table *sqlite3LocateTableItem(Parse*,u32 flags,struct SrcList_item *); +SQLITE_PRIVATE const char *sqlite3PreferredTableName(const char*); +SQLITE_PRIVATE Table *sqlite3LocateTableItem(Parse*,u32 flags,SrcItem *); SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3*,const char*, const char*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*); -SQLITE_PRIVATE void sqlite3Vacuum(Parse*,Token*); -SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*, int); -SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3*, Token*); -SQLITE_PRIVATE int sqlite3ExprCompare(Parse*,Expr*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList*, ExprList*, int); -SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse*,Expr*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr*,int); +SQLITE_PRIVATE void sqlite3Vacuum(Parse*,Token*,Expr*); +SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*, int, sqlite3_value*); +SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3*, const Token*); +SQLITE_PRIVATE int sqlite3ExprCompare(const Parse*,const Expr*,const Expr*, int); +SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr*,Expr*,int); +SQLITE_PRIVATE int sqlite3ExprListCompare(const ExprList*,const ExprList*, int); +SQLITE_PRIVATE int sqlite3ExprImpliesExpr(const Parse*,const Expr*,const Expr*, int); +SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr*,int,int); +SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker*,Parse*); SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*); SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*); SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx); -SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr*, SrcList*); +SQLITE_PRIVATE int sqlite3ReferencesSrcList(Parse*, Expr*, SrcList*); SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse*); #ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE void sqlite3PrngSaveState(void); @@ -18420,6 +20624,7 @@ SQLITE_PRIVATE void sqlite3EndTransaction(Parse*,int); SQLITE_PRIVATE void sqlite3Savepoint(Parse*, int, Token*); SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *); SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3*); +SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char*); SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr*); SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr*); SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr*); @@ -18427,10 +20632,11 @@ SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr*); SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr*, u8); SQLITE_PRIVATE int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr*,int); +SQLITE_PRIVATE int sqlite3ExprIsSingleTableConstraint(Expr*,const SrcList*,int); #ifdef SQLITE_ENABLE_CURSOR_HINTS SQLITE_PRIVATE int sqlite3ExprContainsSubquery(Expr*); #endif -SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr*, int*); +SQLITE_PRIVATE int sqlite3ExprIsInteger(const Expr*, int*); SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr*); SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr*, char); SQLITE_PRIVATE int sqlite3IsRowid(const char*); @@ -18439,6 +20645,7 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int); SQLITE_PRIVATE int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int); SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse*,int); +SQLITE_PRIVATE int sqlite3ExprReferencesUpdatedColumn(Expr*,int*,int); SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int, u8,u8,int,int*,int*,Upsert*); #ifdef SQLITE_ENABLE_NULL_TRIM @@ -18454,24 +20661,26 @@ SQLITE_PRIVATE void sqlite3MayAbort(Parse*); SQLITE_PRIVATE void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8); SQLITE_PRIVATE void sqlite3UniqueConstraint(Parse*, int, Index*); SQLITE_PRIVATE void sqlite3RowidConstraint(Parse*, int, Table*); -SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3*,Expr*,int); -SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3*,ExprList*,int); -SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3*,SrcList*,int); -SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3*,IdList*); -SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3*,Select*,int); -#if SELECTTRACE_ENABLED -SQLITE_PRIVATE void sqlite3SelectSetName(Select*,const char*); -#else -# define sqlite3SelectSetName(A,B) -#endif +SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3*,const Expr*,int); +SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3*,const ExprList*,int); +SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3*,const SrcList*,int); +SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3*,const IdList*); +SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3*,const Select*,int); +SQLITE_PRIVATE FuncDef *sqlite3FunctionSearch(int,const char*); SQLITE_PRIVATE void sqlite3InsertBuiltinFuncs(FuncDef*,int); SQLITE_PRIVATE FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,u8,u8); +SQLITE_PRIVATE void sqlite3QuoteValue(StrAccum*,sqlite3_value*); SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void); SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void); +SQLITE_PRIVATE void sqlite3RegisterJsonFunctions(void); SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*); +#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_JSON) +SQLITE_PRIVATE int sqlite3JsonTableFunctions(sqlite3*); +#endif SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3*); SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3*); SQLITE_PRIVATE void sqlite3ChangeCookie(Parse*, int); +SQLITE_PRIVATE With *sqlite3WithDup(sqlite3 *db, With *p); #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) SQLITE_PRIVATE void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,Expr*,int); @@ -18492,16 +20701,17 @@ SQLITE_PRIVATE void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, i SQLITE_PRIVATE void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*); SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*, const char*,const char*); -SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*, +SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*, Select*,u8,Upsert*, const char*,const char*); -SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, u8, - const char*,const char*); -SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*, +SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,SrcList*,ExprList*, + Expr*, u8, const char*,const char*); +SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*, const char*,const char*); SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3*, Trigger*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int); +SQLITE_PRIVATE SrcList *sqlite3TriggerStepSrc(Parse*, TriggerStep*); # define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p)) # define sqlite3IsToplevel(p) ((p)->pToplevel==0) #else @@ -18515,9 +20725,13 @@ SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Tab # define sqlite3ParseToplevel(p) p # define sqlite3IsToplevel(p) 1 # define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0 +# define sqlite3TriggerStepSrc(A,B) 0 #endif SQLITE_PRIVATE int sqlite3JoinType(Parse*, Token*, Token*, Token*); +SQLITE_PRIVATE int sqlite3ColumnIndex(Table *pTab, const char *zCol); +SQLITE_PRIVATE void sqlite3SrcItemColumnUsed(SrcItem*,int); +SQLITE_PRIVATE void sqlite3SetJoinExpr(Expr*,int,u32); SQLITE_PRIVATE void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int); SQLITE_PRIVATE void sqlite3DeferForeignKey(Parse*, int); #ifndef SQLITE_OMIT_AUTHORIZATION @@ -18532,16 +20746,21 @@ SQLITE_PRIVATE int sqlite3AuthReadCol(Parse*, const char *, const char *, int) # define sqlite3AuthContextPush(a,b,c) # define sqlite3AuthContextPop(a) ((void)(a)) #endif +SQLITE_PRIVATE int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName); SQLITE_PRIVATE void sqlite3Attach(Parse*, Expr*, Expr*, Expr*); SQLITE_PRIVATE void sqlite3Detach(Parse*, Expr*); SQLITE_PRIVATE void sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*); SQLITE_PRIVATE int sqlite3FixSrcList(DbFixer*, SrcList*); SQLITE_PRIVATE int sqlite3FixSelect(DbFixer*, Select*); SQLITE_PRIVATE int sqlite3FixExpr(DbFixer*, Expr*); -SQLITE_PRIVATE int sqlite3FixExprList(DbFixer*, ExprList*); SQLITE_PRIVATE int sqlite3FixTriggerStep(DbFixer*, TriggerStep*); + +SQLITE_PRIVATE int sqlite3RealSameAsInt(double,sqlite3_int64); +SQLITE_PRIVATE i64 sqlite3RealToI64(double); +SQLITE_PRIVATE int sqlite3Int64ToText(i64,char*); SQLITE_PRIVATE int sqlite3AtoF(const char *z, double*, int, u8); SQLITE_PRIVATE int sqlite3GetInt32(const char *, int*); +SQLITE_PRIVATE int sqlite3GetUInt32(const char*, u32*); SQLITE_PRIVATE int sqlite3Atoi(const char*); #ifndef SQLITE_OMIT_UTF16 SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *pData, int nChar); @@ -18550,14 +20769,8 @@ SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *pData, int nByte); SQLITE_PRIVATE u32 sqlite3Utf8Read(const u8**); SQLITE_PRIVATE LogEst sqlite3LogEst(u64); SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst,LogEst); -#ifndef SQLITE_OMIT_VIRTUALTABLE SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double); -#endif -#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ - defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ - defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst); -#endif SQLITE_PRIVATE VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int); SQLITE_PRIVATE const char *sqlite3VListNumToName(VList*,int); SQLITE_PRIVATE int sqlite3VListNameToNum(VList*,const char*,int); @@ -18579,6 +20792,8 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v); */ #define getVarint32(A,B) \ (u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B))) +#define getVarint32NR(A,B) \ + B=(u32)*(A);if(B>=0x80)sqlite3GetVarint32((A),(u32*)&(B)) #define putVarint32(A,B) \ (u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\ sqlite3PutVarint((A),(B))) @@ -18587,15 +20802,18 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v); SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3*, Index*); +SQLITE_PRIVATE char *sqlite3TableAffinityStr(sqlite3*,const Table*); SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe*, Table*, int); -SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2); -SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity); -SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table*,int); -SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr); +SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2); +SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity); +SQLITE_PRIVATE char sqlite3TableColumnAffinity(const Table*,int); +SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr); +SQLITE_PRIVATE int sqlite3ExprDataType(const Expr *pExpr); SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8); SQLITE_PRIVATE int sqlite3DecOrHexToI64(const char*, i64*); SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...); SQLITE_PRIVATE void sqlite3Error(sqlite3*,int); +SQLITE_PRIVATE void sqlite3ErrorClear(sqlite3*); SQLITE_PRIVATE void sqlite3SystemError(sqlite3*,int); SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3*, const char *z, int n); SQLITE_PRIVATE u8 sqlite3HexToInt(int h); @@ -18605,23 +20823,30 @@ SQLITE_PRIVATE int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); SQLITE_PRIVATE const char *sqlite3ErrName(int); #endif -#ifdef SQLITE_ENABLE_DESERIALIZE +#ifndef SQLITE_OMIT_DESERIALIZE SQLITE_PRIVATE int sqlite3MemdbInit(void); +SQLITE_PRIVATE int sqlite3IsMemdb(const sqlite3_vfs*); +#else +# define sqlite3IsMemdb(X) 0 #endif SQLITE_PRIVATE const char *sqlite3ErrStr(int); SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse); SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); +SQLITE_PRIVATE int sqlite3IsBinary(const CollSeq*); SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); -SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); -SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr); -SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*); -SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int); -SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*); +SQLITE_PRIVATE void sqlite3SetTextEncoding(sqlite3 *db, u8); +SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr); +SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr); +SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,const Expr*,const Expr*); +SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(const Parse *pParse, Expr*, const Token*, int); +SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(const Parse*,Expr*,const char*); SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*); +SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr*); SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *); -SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *, const char *); -SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, int); +SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3*); +SQLITE_PRIVATE int sqlite3CheckObjectName(Parse*, const char*,const char*,const char*); +SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, i64); SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64); SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64); SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64); @@ -18634,55 +20859,79 @@ SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*); SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z,u8); SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value*, u8); +SQLITE_PRIVATE int sqlite3ValueIsOfClass(const sqlite3_value*, void(*)(void*)); SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value*, u8); SQLITE_PRIVATE void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, void(*)(void*)); SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value*); SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value*); +#ifndef SQLITE_UNTESTABLE +SQLITE_PRIVATE void sqlite3ResultIntReal(sqlite3_context*); +#endif SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *); #ifndef SQLITE_OMIT_UTF16 SQLITE_PRIVATE char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8); #endif -SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **); +SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, const Expr *, u8, u8, sqlite3_value **); SQLITE_PRIVATE void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8); #ifndef SQLITE_AMALGAMATION SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[]; SQLITE_PRIVATE const char sqlite3StrBINARY[]; +SQLITE_PRIVATE const unsigned char sqlite3StdTypeLen[]; +SQLITE_PRIVATE const char sqlite3StdTypeAffinity[]; +SQLITE_PRIVATE const char *sqlite3StdType[]; SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[]; +SQLITE_PRIVATE const unsigned char *sqlite3aLTb; +SQLITE_PRIVATE const unsigned char *sqlite3aEQb; +SQLITE_PRIVATE const unsigned char *sqlite3aGTb; SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[]; -SQLITE_PRIVATE const Token sqlite3IntTokens[]; SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config; SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions; #ifndef SQLITE_OMIT_WSD SQLITE_PRIVATE int sqlite3PendingByte; #endif -#endif +#endif /* SQLITE_AMALGAMATION */ #ifdef VDBE_PROFILE SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt; #endif -SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, int, int); +SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, Pgno, Pgno); SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*); SQLITE_PRIVATE void sqlite3AlterFunctions(void); SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*); +SQLITE_PRIVATE void sqlite3AlterRenameColumn(Parse*, SrcList*, Token*, Token*); SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *, int *); SQLITE_PRIVATE void sqlite3NestedParse(Parse*, const char*, ...); -SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3*); -SQLITE_PRIVATE int sqlite3CodeSubselect(Parse*, Expr *, int, int); +SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3*, int); +SQLITE_PRIVATE void sqlite3CodeRhsOfIN(Parse*, Expr*, int); +SQLITE_PRIVATE int sqlite3CodeSubselect(Parse*, Expr*); SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*); +SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse*, SrcItem*); SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p); -SQLITE_PRIVATE int sqlite3MatchSpanName(const char*, const char*, const char*, const char*); +SQLITE_PRIVATE int sqlite3MatchEName( + const struct ExprList_item*, + const char*, + const char*, + const char* +); +SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr*); +SQLITE_PRIVATE u8 sqlite3StrIHash(const char*); SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*); SQLITE_PRIVATE int sqlite3ResolveExprListNames(NameContext*, ExprList*); SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*); -SQLITE_PRIVATE void sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); +SQLITE_PRIVATE int sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*); SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *, Table *, int, int); SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *, Token *); SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *, SrcList *); +SQLITE_PRIVATE void sqlite3AlterDropColumn(Parse*, SrcList*, const Token*); +SQLITE_PRIVATE const void *sqlite3RenameTokenMap(Parse*, const void*, const Token*); +SQLITE_PRIVATE void sqlite3RenameTokenRemap(Parse*, const void *pTo, const void *pFrom); +SQLITE_PRIVATE void sqlite3RenameExprUnmap(Parse*, Expr*); +SQLITE_PRIVATE void sqlite3RenameExprlistUnmap(Parse*, ExprList*); SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*); SQLITE_PRIVATE char sqlite3AffinityType(const char*, Column*); SQLITE_PRIVATE void sqlite3Analyze(Parse*, Token*, Token*); -SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*, sqlite3_file*); +SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*); SQLITE_PRIVATE int sqlite3FindDb(sqlite3*, Token*); SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *, const char *); SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3*,int iDB); @@ -18697,24 +20946,41 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int); SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo*); SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoRef(KeyInfo*); SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*); +SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int); +SQLITE_PRIVATE const char *sqlite3SelectOpName(int); +SQLITE_PRIVATE int sqlite3HasExplicitNulls(Parse*, ExprList*); + #ifdef SQLITE_DEBUG SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*); #endif SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *, void (*)(sqlite3_context*,int,sqlite3_value **), - void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*), + void (*)(sqlite3_context*,int,sqlite3_value **), + void (*)(sqlite3_context*), + void (*)(sqlite3_context*), + void (*)(sqlite3_context*,int,sqlite3_value **), FuncDestructor *pDestructor ); SQLITE_PRIVATE void sqlite3NoopDestructor(void*); -SQLITE_PRIVATE void sqlite3OomFault(sqlite3*); +SQLITE_PRIVATE void *sqlite3OomFault(sqlite3*); SQLITE_PRIVATE void sqlite3OomClear(sqlite3*); SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int); SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *); +SQLITE_PRIVATE char *sqlite3RCStrRef(char*); +SQLITE_PRIVATE void sqlite3RCStrUnref(char*); +SQLITE_PRIVATE char *sqlite3RCStrNew(u64); +SQLITE_PRIVATE char *sqlite3RCStrResize(char*,u64); + SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int); +SQLITE_PRIVATE int sqlite3StrAccumEnlarge(StrAccum*, i64); SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*); +SQLITE_PRIVATE void sqlite3StrAccumSetError(StrAccum*, u8); +SQLITE_PRIVATE void sqlite3ResultStrAccum(sqlite3_context*,StrAccum*); SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int); SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int); +SQLITE_PRIVATE void sqlite3RecordErrorByteOffset(sqlite3*,const char*); +SQLITE_PRIVATE void sqlite3RecordErrorOffsetOfExpr(sqlite3*,const Expr*); SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *); SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *); @@ -18725,8 +20991,7 @@ SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse*, Expr*); # define sqlite3ExprCheckIN(x,y) SQLITE_OK #endif -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void); +#ifdef SQLITE_ENABLE_STAT4 SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue( Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*); SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**); @@ -18743,6 +21008,7 @@ SQLITE_PRIVATE void *sqlite3ParserAlloc(void*(*)(u64), Parse*); SQLITE_PRIVATE void sqlite3ParserFree(void*, void(*)(void*)); #endif SQLITE_PRIVATE void sqlite3Parser(void*, int, Token); +SQLITE_PRIVATE int sqlite3ParserFallback(int); #ifdef YYTRACKMAXSTACKDEPTH SQLITE_PRIVATE int sqlite3ParserStackPeak(void*); #endif @@ -18755,7 +21021,7 @@ SQLITE_PRIVATE void sqlite3CloseExtensions(sqlite3*); #endif #ifndef SQLITE_OMIT_SHARED_CACHE -SQLITE_PRIVATE void sqlite3TableLock(Parse *, int, int, u8, const char *); +SQLITE_PRIVATE void sqlite3TableLock(Parse *, int, Pgno, u8, const char *); #else #define sqlite3TableLock(v,w,x,y,z) #endif @@ -18765,13 +21031,14 @@ SQLITE_PRIVATE int sqlite3Utf8To8(unsigned char*); #endif #ifdef SQLITE_OMIT_VIRTUALTABLE -# define sqlite3VtabClear(Y) +# define sqlite3VtabClear(D,T) # define sqlite3VtabSync(X,Y) SQLITE_OK # define sqlite3VtabRollback(X) # define sqlite3VtabCommit(X) # define sqlite3VtabInSync(db) 0 # define sqlite3VtabLock(X) # define sqlite3VtabUnlock(X) +# define sqlite3VtabModuleUnref(D,X) # define sqlite3VtabUnlockList(X) # define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK # define sqlite3GetVTable(X,Y) ((VTable*)0) @@ -18783,6 +21050,7 @@ SQLITE_PRIVATE int sqlite3VtabRollback(sqlite3 *db); SQLITE_PRIVATE int sqlite3VtabCommit(sqlite3 *db); SQLITE_PRIVATE void sqlite3VtabLock(VTable *); SQLITE_PRIVATE void sqlite3VtabUnlock(VTable *); +SQLITE_PRIVATE void sqlite3VtabModuleUnref(sqlite3*,Module*); SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3*); SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *, int, int); SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*); @@ -18796,6 +21064,16 @@ SQLITE_PRIVATE Module *sqlite3VtabCreateModule( ); # define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0) #endif +SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db); +#ifndef SQLITE_OMIT_VIRTUALTABLE +SQLITE_PRIVATE int sqlite3ShadowTableName(sqlite3 *db, const char *zName); +SQLITE_PRIVATE int sqlite3IsShadowTableOf(sqlite3*,Table*,const char*); +SQLITE_PRIVATE void sqlite3MarkAllShadowTablesOf(sqlite3*, Table*); +#else +# define sqlite3ShadowTableName(A,B) 0 +# define sqlite3IsShadowTableOf(A,B,C) 0 +# define sqlite3MarkAllShadowTablesOf(A,B) +#endif SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse*,Module*); SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3*,Module*); SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*); @@ -18807,14 +21085,22 @@ SQLITE_PRIVATE int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **); SQLITE_PRIVATE int sqlite3VtabCallConnect(Parse*, Table*); SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3*, int, const char *); SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *, VTable *); + SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*); +SQLITE_PRIVATE void sqlite3VtabUsesAllSchemas(Parse*); SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*); SQLITE_PRIVATE int sqlite3VdbeParameterIndex(Vdbe*, const char*, int); SQLITE_PRIVATE int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *); -SQLITE_PRIVATE void sqlite3ParserReset(Parse*); +SQLITE_PRIVATE void sqlite3ParseObjectInit(Parse*,sqlite3*); +SQLITE_PRIVATE void sqlite3ParseObjectReset(Parse*); +SQLITE_PRIVATE void *sqlite3ParserAddCleanup(Parse*,void(*)(sqlite3*,void*),void*); +#ifdef SQLITE_ENABLE_NORMALIZE +SQLITE_PRIVATE char *sqlite3Normalize(Vdbe*, const char*); +#endif SQLITE_PRIVATE int sqlite3Reprepare(Vdbe*); SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*); -SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *); +SQLITE_PRIVATE CollSeq *sqlite3ExprCompareCollSeq(Parse*,const Expr*); +SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, const Expr*, const Expr*); SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*); SQLITE_PRIVATE const char *sqlite3JournalModename(int); #ifndef SQLITE_OMIT_WAL @@ -18822,23 +21108,32 @@ SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3*, int, int, int*, int*); SQLITE_PRIVATE int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int); #endif #ifndef SQLITE_OMIT_CTE -SQLITE_PRIVATE With *sqlite3WithAdd(Parse*,With*,Token*,ExprList*,Select*); +SQLITE_PRIVATE Cte *sqlite3CteNew(Parse*,Token*,ExprList*,Select*,u8); +SQLITE_PRIVATE void sqlite3CteDelete(sqlite3*,Cte*); +SQLITE_PRIVATE With *sqlite3WithAdd(Parse*,With*,Cte*); SQLITE_PRIVATE void sqlite3WithDelete(sqlite3*,With*); -SQLITE_PRIVATE void sqlite3WithPush(Parse*, With*, u8); +SQLITE_PRIVATE With *sqlite3WithPush(Parse*, With*, u8); #else -#define sqlite3WithPush(x,y,z) -#define sqlite3WithDelete(x,y) +# define sqlite3CteNew(P,T,E,S) ((void*)0) +# define sqlite3CteDelete(D,C) +# define sqlite3CteWithAdd(P,W,C) ((void*)0) +# define sqlite3WithDelete(x,y) +# define sqlite3WithPush(x,y,z) ((void*)0) #endif #ifndef SQLITE_OMIT_UPSERT -SQLITE_PRIVATE Upsert *sqlite3UpsertNew(sqlite3*,ExprList*,Expr*,ExprList*,Expr*); +SQLITE_PRIVATE Upsert *sqlite3UpsertNew(sqlite3*,ExprList*,Expr*,ExprList*,Expr*,Upsert*); SQLITE_PRIVATE void sqlite3UpsertDelete(sqlite3*,Upsert*); SQLITE_PRIVATE Upsert *sqlite3UpsertDup(sqlite3*,Upsert*); SQLITE_PRIVATE int sqlite3UpsertAnalyzeTarget(Parse*,SrcList*,Upsert*); SQLITE_PRIVATE void sqlite3UpsertDoUpdate(Parse*,Upsert*,Table*,Index*,int); +SQLITE_PRIVATE Upsert *sqlite3UpsertOfIndex(Upsert*,Index*); +SQLITE_PRIVATE int sqlite3UpsertNextIsIPK(Upsert*); #else -#define sqlite3UpsertNew(v,w,x,y,z) ((Upsert*)0) +#define sqlite3UpsertNew(u,v,w,x,y,z) ((Upsert*)0) #define sqlite3UpsertDelete(x,y) -#define sqlite3UpsertDup(x,y) ((Upsert*)0) +#define sqlite3UpsertDup(x,y) ((Upsert*)0) +#define sqlite3UpsertOfIndex(x,y) ((Upsert*)0) +#define sqlite3UpsertNextIsIPK(x) 0 #endif @@ -18856,6 +21151,7 @@ SQLITE_PRIVATE void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int SQLITE_PRIVATE int sqlite3FkRequired(Parse*, Table*, int*, int); SQLITE_PRIVATE u32 sqlite3FkOldmask(Parse*, Table*); SQLITE_PRIVATE FKey *sqlite3FkReferences(Table *); +SQLITE_PRIVATE void sqlite3FkClearTriggerCache(sqlite3*,int); #else #define sqlite3FkActions(a,b,c,d,e,f) #define sqlite3FkCheck(a,b,c,d,e,f) @@ -18863,6 +21159,7 @@ SQLITE_PRIVATE FKey *sqlite3FkReferences(Table *); #define sqlite3FkOldmask(a,b) 0 #define sqlite3FkRequired(a,b,c,d) 0 #define sqlite3FkReferences(a) 0 + #define sqlite3FkClearTriggerCache(a,b) #endif #ifndef SQLITE_OMIT_FOREIGN_KEY SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *, Table*); @@ -18906,7 +21203,7 @@ SQLITE_PRIVATE void sqlite3EndBenignMalloc(void); #define IN_INDEX_NOOP_OK 0x0001 /* OK to return IN_INDEX_NOOP */ #define IN_INDEX_MEMBERSHIP 0x0002 /* IN operator used for membership test */ #define IN_INDEX_LOOP 0x0004 /* IN operator used as a loop */ -SQLITE_PRIVATE int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*); +SQLITE_PRIVATE int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*, int*); SQLITE_PRIVATE int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int); SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *); @@ -18920,12 +21217,13 @@ SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *); SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p); #if SQLITE_MAX_EXPR_DEPTH>0 -SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *); +SQLITE_PRIVATE int sqlite3SelectExprHeight(const Select *); SQLITE_PRIVATE int sqlite3ExprCheckHeight(Parse*, int); #else #define sqlite3SelectExprHeight(x) 0 #define sqlite3ExprCheckHeight(x,y) #endif +SQLITE_PRIVATE void sqlite3ExprSetErrorOffset(Expr*,int); SQLITE_PRIVATE u32 sqlite3Get4byte(const u8*); SQLITE_PRIVATE void sqlite3Put4byte(u8*, u32); @@ -18991,8 +21289,8 @@ SQLITE_API SQLITE_EXTERN void (SQLITE_CDECL *sqlite3IoTrace)(const char*,...); */ #ifdef SQLITE_MEMDEBUG SQLITE_PRIVATE void sqlite3MemdebugSetType(void*,u8); -SQLITE_PRIVATE int sqlite3MemdebugHasType(void*,u8); -SQLITE_PRIVATE int sqlite3MemdebugNoType(void*,u8); +SQLITE_PRIVATE int sqlite3MemdebugHasType(const void*,u8); +SQLITE_PRIVATE int sqlite3MemdebugNoType(const void*,u8); #else # define sqlite3MemdebugSetType(X,Y) /* no-op */ # define sqlite3MemdebugHasType(X,Y) 1 @@ -19017,19 +21315,927 @@ SQLITE_PRIVATE int sqlite3DbpageRegister(sqlite3*); SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3*); #endif -SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr); -SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr); +SQLITE_PRIVATE int sqlite3ExprVectorSize(const Expr *pExpr); +SQLITE_PRIVATE int sqlite3ExprIsVector(const Expr *pExpr); SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr*, int); -SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(Parse*,Expr*,int); +SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(Parse*,Expr*,int,int); SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse*, Expr*); #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt); #endif +#if SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL) +SQLITE_PRIVATE int sqlite3KvvfsInit(void); +#endif + +#if defined(VDBE_PROFILE) \ + || defined(SQLITE_PERFORMANCE_TRACE) \ + || defined(SQLITE_ENABLE_STMT_SCANSTATUS) +SQLITE_PRIVATE sqlite3_uint64 sqlite3Hwtime(void); +#endif + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +# define IS_STMT_SCANSTATUS(db) (db->flags & SQLITE_StmtScanStatus) +#else +# define IS_STMT_SCANSTATUS(db) 0 +#endif + #endif /* SQLITEINT_H */ /************** End of sqliteInt.h *******************************************/ +/************** Begin file os_common.h ***************************************/ +/* +** 2004 May 22 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains macros and a little bit of code that is common to +** all of the platform-specific files (os_*.c) and is #included into those +** files. +** +** This file should be #included by the os_*.c files only. It is not a +** general purpose header file. +*/ +#ifndef _OS_COMMON_H_ +#define _OS_COMMON_H_ + +/* +** At least two bugs have slipped in because we changed the MEMORY_DEBUG +** macro to SQLITE_DEBUG and some older makefiles have not yet made the +** switch. The following code should catch this problem at compile-time. +*/ +#ifdef MEMORY_DEBUG +# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." +#endif + +/* +** Macros for performance tracing. Normally turned off. Only works +** on i486 hardware. +*/ +#ifdef SQLITE_PERFORMANCE_TRACE + +static sqlite_uint64 g_start; +static sqlite_uint64 g_elapsed; +#define TIMER_START g_start=sqlite3Hwtime() +#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start +#define TIMER_ELAPSED g_elapsed +#else +#define TIMER_START +#define TIMER_END +#define TIMER_ELAPSED ((sqlite_uint64)0) +#endif + +/* +** If we compile with the SQLITE_TEST macro set, then the following block +** of code will give us the ability to simulate a disk I/O error. This +** is used for testing the I/O recovery logic. +*/ +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_io_error_hit; +SQLITE_API extern int sqlite3_io_error_hardhit; +SQLITE_API extern int sqlite3_io_error_pending; +SQLITE_API extern int sqlite3_io_error_persist; +SQLITE_API extern int sqlite3_io_error_benign; +SQLITE_API extern int sqlite3_diskfull_pending; +SQLITE_API extern int sqlite3_diskfull; +#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) +#define SimulateIOError(CODE) \ + if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ + || sqlite3_io_error_pending-- == 1 ) \ + { local_ioerr(); CODE; } +static void local_ioerr(){ + IOTRACE(("IOERR\n")); + sqlite3_io_error_hit++; + if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; +} +#define SimulateDiskfullError(CODE) \ + if( sqlite3_diskfull_pending ){ \ + if( sqlite3_diskfull_pending == 1 ){ \ + local_ioerr(); \ + sqlite3_diskfull = 1; \ + sqlite3_io_error_hit = 1; \ + CODE; \ + }else{ \ + sqlite3_diskfull_pending--; \ + } \ + } +#else +#define SimulateIOErrorBenign(X) +#define SimulateIOError(A) +#define SimulateDiskfullError(A) +#endif /* defined(SQLITE_TEST) */ + +/* +** When testing, keep a count of the number of open files. +*/ +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_open_file_count; +#define OpenCounter(X) sqlite3_open_file_count+=(X) +#else +#define OpenCounter(X) +#endif /* defined(SQLITE_TEST) */ + +#endif /* !defined(_OS_COMMON_H_) */ + +/************** End of os_common.h *******************************************/ +/************** Begin file ctime.c *******************************************/ +/* DO NOT EDIT! +** This file is automatically generated by the script in the canonical +** SQLite source tree at tool/mkctimec.tcl. +** +** To modify this header, edit any of the various lists in that script +** which specify categories of generated conditionals in this file. +*/ + +/* +** 2010 February 23 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file implements routines used to report what compile-time options +** SQLite was built with. +*/ +#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS /* IMP: R-16824-07538 */ + +/* +** Include the configuration header output by 'configure' if we're using the +** autoconf-based build +*/ +#if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H) +/* #include "sqlite_cfg.h" */ +#define SQLITECONFIG_H 1 +#endif + +/* These macros are provided to "stringify" the value of the define +** for those options in which the value is meaningful. */ +#define CTIMEOPT_VAL_(opt) #opt +#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt) + +/* Like CTIMEOPT_VAL, but especially for SQLITE_DEFAULT_LOOKASIDE. This +** option requires a separate macro because legal values contain a single +** comma. e.g. (-DSQLITE_DEFAULT_LOOKASIDE="100,100") */ +#define CTIMEOPT_VAL2_(opt1,opt2) #opt1 "," #opt2 +#define CTIMEOPT_VAL2(opt) CTIMEOPT_VAL2_(opt) +/* #include "sqliteInt.h" */ + +/* +** An array of names of all compile-time options. This array should +** be sorted A-Z. +** +** This array looks large, but in a typical installation actually uses +** only a handful of compile-time options, so most times this array is usually +** rather short and uses little memory space. +*/ +static const char * const sqlite3azCompileOpt[] = { + +#ifdef SQLITE_32BIT_ROWID + "32BIT_ROWID", +#endif +#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC + "4_BYTE_ALIGNED_MALLOC", +#endif +#ifdef SQLITE_ALLOW_COVERING_INDEX_SCAN +# if SQLITE_ALLOW_COVERING_INDEX_SCAN != 1 + "ALLOW_COVERING_INDEX_SCAN=" CTIMEOPT_VAL(SQLITE_ALLOW_COVERING_INDEX_SCAN), +# endif +#endif +#ifdef SQLITE_ALLOW_URI_AUTHORITY + "ALLOW_URI_AUTHORITY", +#endif +#ifdef SQLITE_ATOMIC_INTRINSICS + "ATOMIC_INTRINSICS=" CTIMEOPT_VAL(SQLITE_ATOMIC_INTRINSICS), +#endif +#ifdef SQLITE_BITMASK_TYPE + "BITMASK_TYPE=" CTIMEOPT_VAL(SQLITE_BITMASK_TYPE), +#endif +#ifdef SQLITE_BUG_COMPATIBLE_20160819 + "BUG_COMPATIBLE_20160819", +#endif +#ifdef SQLITE_CASE_SENSITIVE_LIKE + "CASE_SENSITIVE_LIKE", +#endif +#ifdef SQLITE_CHECK_PAGES + "CHECK_PAGES", +#endif +#if defined(__clang__) && defined(__clang_major__) + "COMPILER=clang-" CTIMEOPT_VAL(__clang_major__) "." + CTIMEOPT_VAL(__clang_minor__) "." + CTIMEOPT_VAL(__clang_patchlevel__), +#elif defined(_MSC_VER) + "COMPILER=msvc-" CTIMEOPT_VAL(_MSC_VER), +#elif defined(__GNUC__) && defined(__VERSION__) + "COMPILER=gcc-" __VERSION__, +#endif +#ifdef SQLITE_COVERAGE_TEST + "COVERAGE_TEST", +#endif +#ifdef SQLITE_DEBUG + "DEBUG", +#endif +#ifdef SQLITE_DEFAULT_AUTOMATIC_INDEX + "DEFAULT_AUTOMATIC_INDEX", +#endif +#ifdef SQLITE_DEFAULT_AUTOVACUUM + "DEFAULT_AUTOVACUUM", +#endif +#ifdef SQLITE_DEFAULT_CACHE_SIZE + "DEFAULT_CACHE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_CACHE_SIZE), +#endif +#ifdef SQLITE_DEFAULT_CKPTFULLFSYNC + "DEFAULT_CKPTFULLFSYNC", +#endif +#ifdef SQLITE_DEFAULT_FILE_FORMAT + "DEFAULT_FILE_FORMAT=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_FORMAT), +#endif +#ifdef SQLITE_DEFAULT_FILE_PERMISSIONS + "DEFAULT_FILE_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_PERMISSIONS), +#endif +#ifdef SQLITE_DEFAULT_FOREIGN_KEYS + "DEFAULT_FOREIGN_KEYS", +#endif +#ifdef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT + "DEFAULT_JOURNAL_SIZE_LIMIT=" CTIMEOPT_VAL(SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT), +#endif +#ifdef SQLITE_DEFAULT_LOCKING_MODE + "DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE), +#endif +#ifdef SQLITE_DEFAULT_LOOKASIDE + "DEFAULT_LOOKASIDE=" CTIMEOPT_VAL2(SQLITE_DEFAULT_LOOKASIDE), +#endif +#ifdef SQLITE_DEFAULT_MEMSTATUS +# if SQLITE_DEFAULT_MEMSTATUS != 1 + "DEFAULT_MEMSTATUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_MEMSTATUS), +# endif +#endif +#ifdef SQLITE_DEFAULT_MMAP_SIZE + "DEFAULT_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_MMAP_SIZE), +#endif +#ifdef SQLITE_DEFAULT_PAGE_SIZE + "DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_PAGE_SIZE), +#endif +#ifdef SQLITE_DEFAULT_PCACHE_INITSZ + "DEFAULT_PCACHE_INITSZ=" CTIMEOPT_VAL(SQLITE_DEFAULT_PCACHE_INITSZ), +#endif +#ifdef SQLITE_DEFAULT_PROXYDIR_PERMISSIONS + "DEFAULT_PROXYDIR_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_PROXYDIR_PERMISSIONS), +#endif +#ifdef SQLITE_DEFAULT_RECURSIVE_TRIGGERS + "DEFAULT_RECURSIVE_TRIGGERS", +#endif +#ifdef SQLITE_DEFAULT_ROWEST + "DEFAULT_ROWEST=" CTIMEOPT_VAL(SQLITE_DEFAULT_ROWEST), +#endif +#ifdef SQLITE_DEFAULT_SECTOR_SIZE + "DEFAULT_SECTOR_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_SECTOR_SIZE), +#endif +#ifdef SQLITE_DEFAULT_SYNCHRONOUS + "DEFAULT_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_SYNCHRONOUS), +#endif +#ifdef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT + "DEFAULT_WAL_AUTOCHECKPOINT=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_AUTOCHECKPOINT), +#endif +#ifdef SQLITE_DEFAULT_WAL_SYNCHRONOUS + "DEFAULT_WAL_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_SYNCHRONOUS), +#endif +#ifdef SQLITE_DEFAULT_WORKER_THREADS + "DEFAULT_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WORKER_THREADS), +#endif +#ifdef SQLITE_DIRECT_OVERFLOW_READ + "DIRECT_OVERFLOW_READ", +#endif +#ifdef SQLITE_DISABLE_DIRSYNC + "DISABLE_DIRSYNC", +#endif +#ifdef SQLITE_DISABLE_FTS3_UNICODE + "DISABLE_FTS3_UNICODE", +#endif +#ifdef SQLITE_DISABLE_FTS4_DEFERRED + "DISABLE_FTS4_DEFERRED", +#endif +#ifdef SQLITE_DISABLE_INTRINSIC + "DISABLE_INTRINSIC", +#endif +#ifdef SQLITE_DISABLE_LFS + "DISABLE_LFS", +#endif +#ifdef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS + "DISABLE_PAGECACHE_OVERFLOW_STATS", +#endif +#ifdef SQLITE_DISABLE_SKIPAHEAD_DISTINCT + "DISABLE_SKIPAHEAD_DISTINCT", +#endif +#ifdef SQLITE_DQS + "DQS=" CTIMEOPT_VAL(SQLITE_DQS), +#endif +#ifdef SQLITE_ENABLE_8_3_NAMES + "ENABLE_8_3_NAMES=" CTIMEOPT_VAL(SQLITE_ENABLE_8_3_NAMES), +#endif +#ifdef SQLITE_ENABLE_API_ARMOR + "ENABLE_API_ARMOR", +#endif +#ifdef SQLITE_ENABLE_ATOMIC_WRITE + "ENABLE_ATOMIC_WRITE", +#endif +#ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE + "ENABLE_BATCH_ATOMIC_WRITE", +#endif +#ifdef SQLITE_ENABLE_BYTECODE_VTAB + "ENABLE_BYTECODE_VTAB", +#endif +#ifdef SQLITE_ENABLE_CEROD + "ENABLE_CEROD=" CTIMEOPT_VAL(SQLITE_ENABLE_CEROD), +#endif +#ifdef SQLITE_ENABLE_COLUMN_METADATA + "ENABLE_COLUMN_METADATA", +#endif +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK + "ENABLE_COLUMN_USED_MASK", +#endif +#ifdef SQLITE_ENABLE_COSTMULT + "ENABLE_COSTMULT", +#endif +#ifdef SQLITE_ENABLE_CURSOR_HINTS + "ENABLE_CURSOR_HINTS", +#endif +#ifdef SQLITE_ENABLE_DBPAGE_VTAB + "ENABLE_DBPAGE_VTAB", +#endif +#ifdef SQLITE_ENABLE_DBSTAT_VTAB + "ENABLE_DBSTAT_VTAB", +#endif +#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT + "ENABLE_EXPENSIVE_ASSERT", +#endif +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + "ENABLE_EXPLAIN_COMMENTS", +#endif +#ifdef SQLITE_ENABLE_FTS3 + "ENABLE_FTS3", +#endif +#ifdef SQLITE_ENABLE_FTS3_PARENTHESIS + "ENABLE_FTS3_PARENTHESIS", +#endif +#ifdef SQLITE_ENABLE_FTS3_TOKENIZER + "ENABLE_FTS3_TOKENIZER", +#endif +#ifdef SQLITE_ENABLE_FTS4 + "ENABLE_FTS4", +#endif +#ifdef SQLITE_ENABLE_FTS5 + "ENABLE_FTS5", +#endif +#ifdef SQLITE_ENABLE_GEOPOLY + "ENABLE_GEOPOLY", +#endif +#ifdef SQLITE_ENABLE_HIDDEN_COLUMNS + "ENABLE_HIDDEN_COLUMNS", +#endif +#ifdef SQLITE_ENABLE_ICU + "ENABLE_ICU", +#endif +#ifdef SQLITE_ENABLE_IOTRACE + "ENABLE_IOTRACE", +#endif +#ifdef SQLITE_ENABLE_LOAD_EXTENSION + "ENABLE_LOAD_EXTENSION", +#endif +#ifdef SQLITE_ENABLE_LOCKING_STYLE + "ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE), +#endif +#ifdef SQLITE_ENABLE_MATH_FUNCTIONS + "ENABLE_MATH_FUNCTIONS", +#endif +#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT + "ENABLE_MEMORY_MANAGEMENT", +#endif +#ifdef SQLITE_ENABLE_MEMSYS3 + "ENABLE_MEMSYS3", +#endif +#ifdef SQLITE_ENABLE_MEMSYS5 + "ENABLE_MEMSYS5", +#endif +#ifdef SQLITE_ENABLE_MULTIPLEX + "ENABLE_MULTIPLEX", +#endif +#ifdef SQLITE_ENABLE_NORMALIZE + "ENABLE_NORMALIZE", +#endif +#ifdef SQLITE_ENABLE_NULL_TRIM + "ENABLE_NULL_TRIM", +#endif +#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC + "ENABLE_OFFSET_SQL_FUNC", +#endif +#ifdef SQLITE_ENABLE_OVERSIZE_CELL_CHECK + "ENABLE_OVERSIZE_CELL_CHECK", +#endif +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + "ENABLE_PREUPDATE_HOOK", +#endif +#ifdef SQLITE_ENABLE_QPSG + "ENABLE_QPSG", +#endif +#ifdef SQLITE_ENABLE_RBU + "ENABLE_RBU", +#endif +#ifdef SQLITE_ENABLE_RTREE + "ENABLE_RTREE", +#endif +#ifdef SQLITE_ENABLE_SESSION + "ENABLE_SESSION", +#endif +#ifdef SQLITE_ENABLE_SNAPSHOT + "ENABLE_SNAPSHOT", +#endif +#ifdef SQLITE_ENABLE_SORTER_REFERENCES + "ENABLE_SORTER_REFERENCES", +#endif +#ifdef SQLITE_ENABLE_SQLLOG + "ENABLE_SQLLOG", +#endif +#ifdef SQLITE_ENABLE_STAT4 + "ENABLE_STAT4", +#endif +#ifdef SQLITE_ENABLE_STMTVTAB + "ENABLE_STMTVTAB", +#endif +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + "ENABLE_STMT_SCANSTATUS", +#endif +#ifdef SQLITE_ENABLE_TREETRACE + "ENABLE_TREETRACE", +#endif +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + "ENABLE_UNKNOWN_SQL_FUNCTION", +#endif +#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY + "ENABLE_UNLOCK_NOTIFY", +#endif +#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT + "ENABLE_UPDATE_DELETE_LIMIT", +#endif +#ifdef SQLITE_ENABLE_URI_00_ERROR + "ENABLE_URI_00_ERROR", +#endif +#ifdef SQLITE_ENABLE_VFSTRACE + "ENABLE_VFSTRACE", +#endif +#ifdef SQLITE_ENABLE_WHERETRACE + "ENABLE_WHERETRACE", +#endif +#ifdef SQLITE_ENABLE_ZIPVFS + "ENABLE_ZIPVFS", +#endif +#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS + "EXPLAIN_ESTIMATED_ROWS", +#endif +#ifdef SQLITE_EXTRA_IFNULLROW + "EXTRA_IFNULLROW", +#endif +#ifdef SQLITE_EXTRA_INIT + "EXTRA_INIT=" CTIMEOPT_VAL(SQLITE_EXTRA_INIT), +#endif +#ifdef SQLITE_EXTRA_SHUTDOWN + "EXTRA_SHUTDOWN=" CTIMEOPT_VAL(SQLITE_EXTRA_SHUTDOWN), +#endif +#ifdef SQLITE_FTS3_MAX_EXPR_DEPTH + "FTS3_MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_FTS3_MAX_EXPR_DEPTH), +#endif +#ifdef SQLITE_FTS5_ENABLE_TEST_MI + "FTS5_ENABLE_TEST_MI", +#endif +#ifdef SQLITE_FTS5_NO_WITHOUT_ROWID + "FTS5_NO_WITHOUT_ROWID", +#endif +#if HAVE_ISNAN || SQLITE_HAVE_ISNAN + "HAVE_ISNAN", +#endif +#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX +# if SQLITE_HOMEGROWN_RECURSIVE_MUTEX != 1 + "HOMEGROWN_RECURSIVE_MUTEX=" CTIMEOPT_VAL(SQLITE_HOMEGROWN_RECURSIVE_MUTEX), +# endif +#endif +#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS + "IGNORE_AFP_LOCK_ERRORS", +#endif +#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS + "IGNORE_FLOCK_LOCK_ERRORS", +#endif +#ifdef SQLITE_INLINE_MEMCPY + "INLINE_MEMCPY", +#endif +#ifdef SQLITE_INT64_TYPE + "INT64_TYPE", +#endif +#ifdef SQLITE_INTEGRITY_CHECK_ERROR_MAX + "INTEGRITY_CHECK_ERROR_MAX=" CTIMEOPT_VAL(SQLITE_INTEGRITY_CHECK_ERROR_MAX), +#endif +#ifdef SQLITE_LEGACY_JSON_VALID + "LEGACY_JSON_VALID", +#endif +#ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS + "LIKE_DOESNT_MATCH_BLOBS", +#endif +#ifdef SQLITE_LOCK_TRACE + "LOCK_TRACE", +#endif +#ifdef SQLITE_LOG_CACHE_SPILL + "LOG_CACHE_SPILL", +#endif +#ifdef SQLITE_MALLOC_SOFT_LIMIT + "MALLOC_SOFT_LIMIT=" CTIMEOPT_VAL(SQLITE_MALLOC_SOFT_LIMIT), +#endif +#ifdef SQLITE_MAX_ATTACHED + "MAX_ATTACHED=" CTIMEOPT_VAL(SQLITE_MAX_ATTACHED), +#endif +#ifdef SQLITE_MAX_COLUMN + "MAX_COLUMN=" CTIMEOPT_VAL(SQLITE_MAX_COLUMN), +#endif +#ifdef SQLITE_MAX_COMPOUND_SELECT + "MAX_COMPOUND_SELECT=" CTIMEOPT_VAL(SQLITE_MAX_COMPOUND_SELECT), +#endif +#ifdef SQLITE_MAX_DEFAULT_PAGE_SIZE + "MAX_DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_DEFAULT_PAGE_SIZE), +#endif +#ifdef SQLITE_MAX_EXPR_DEPTH + "MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_EXPR_DEPTH), +#endif +#ifdef SQLITE_MAX_FUNCTION_ARG + "MAX_FUNCTION_ARG=" CTIMEOPT_VAL(SQLITE_MAX_FUNCTION_ARG), +#endif +#ifdef SQLITE_MAX_LENGTH + "MAX_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LENGTH), +#endif +#ifdef SQLITE_MAX_LIKE_PATTERN_LENGTH + "MAX_LIKE_PATTERN_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LIKE_PATTERN_LENGTH), +#endif +#ifdef SQLITE_MAX_MEMORY + "MAX_MEMORY=" CTIMEOPT_VAL(SQLITE_MAX_MEMORY), +#endif +#ifdef SQLITE_MAX_MMAP_SIZE + "MAX_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE), +#endif +#ifdef SQLITE_MAX_MMAP_SIZE_ + "MAX_MMAP_SIZE_=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE_), +#endif +#ifdef SQLITE_MAX_PAGE_COUNT + "MAX_PAGE_COUNT=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_COUNT), +#endif +#ifdef SQLITE_MAX_PAGE_SIZE + "MAX_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_SIZE), +#endif +#ifdef SQLITE_MAX_SCHEMA_RETRY + "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY), +#endif +#ifdef SQLITE_MAX_SQL_LENGTH + "MAX_SQL_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_SQL_LENGTH), +#endif +#ifdef SQLITE_MAX_TRIGGER_DEPTH + "MAX_TRIGGER_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_TRIGGER_DEPTH), +#endif +#ifdef SQLITE_MAX_VARIABLE_NUMBER + "MAX_VARIABLE_NUMBER=" CTIMEOPT_VAL(SQLITE_MAX_VARIABLE_NUMBER), +#endif +#ifdef SQLITE_MAX_VDBE_OP + "MAX_VDBE_OP=" CTIMEOPT_VAL(SQLITE_MAX_VDBE_OP), +#endif +#ifdef SQLITE_MAX_WORKER_THREADS + "MAX_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_MAX_WORKER_THREADS), +#endif +#ifdef SQLITE_MEMDEBUG + "MEMDEBUG", +#endif +#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT + "MIXED_ENDIAN_64BIT_FLOAT", +#endif +#ifdef SQLITE_MMAP_READWRITE + "MMAP_READWRITE", +#endif +#ifdef SQLITE_MUTEX_NOOP + "MUTEX_NOOP", +#endif +#ifdef SQLITE_MUTEX_OMIT + "MUTEX_OMIT", +#endif +#ifdef SQLITE_MUTEX_PTHREADS + "MUTEX_PTHREADS", +#endif +#ifdef SQLITE_MUTEX_W32 + "MUTEX_W32", +#endif +#ifdef SQLITE_NEED_ERR_NAME + "NEED_ERR_NAME", +#endif +#ifdef SQLITE_NO_SYNC + "NO_SYNC", +#endif +#ifdef SQLITE_OMIT_ALTERTABLE + "OMIT_ALTERTABLE", +#endif +#ifdef SQLITE_OMIT_ANALYZE + "OMIT_ANALYZE", +#endif +#ifdef SQLITE_OMIT_ATTACH + "OMIT_ATTACH", +#endif +#ifdef SQLITE_OMIT_AUTHORIZATION + "OMIT_AUTHORIZATION", +#endif +#ifdef SQLITE_OMIT_AUTOINCREMENT + "OMIT_AUTOINCREMENT", +#endif +#ifdef SQLITE_OMIT_AUTOINIT + "OMIT_AUTOINIT", +#endif +#ifdef SQLITE_OMIT_AUTOMATIC_INDEX + "OMIT_AUTOMATIC_INDEX", +#endif +#ifdef SQLITE_OMIT_AUTORESET + "OMIT_AUTORESET", +#endif +#ifdef SQLITE_OMIT_AUTOVACUUM + "OMIT_AUTOVACUUM", +#endif +#ifdef SQLITE_OMIT_BETWEEN_OPTIMIZATION + "OMIT_BETWEEN_OPTIMIZATION", +#endif +#ifdef SQLITE_OMIT_BLOB_LITERAL + "OMIT_BLOB_LITERAL", +#endif +#ifdef SQLITE_OMIT_CAST + "OMIT_CAST", +#endif +#ifdef SQLITE_OMIT_CHECK + "OMIT_CHECK", +#endif +#ifdef SQLITE_OMIT_COMPLETE + "OMIT_COMPLETE", +#endif +#ifdef SQLITE_OMIT_COMPOUND_SELECT + "OMIT_COMPOUND_SELECT", +#endif +#ifdef SQLITE_OMIT_CONFLICT_CLAUSE + "OMIT_CONFLICT_CLAUSE", +#endif +#ifdef SQLITE_OMIT_CTE + "OMIT_CTE", +#endif +#if defined(SQLITE_OMIT_DATETIME_FUNCS) || defined(SQLITE_OMIT_FLOATING_POINT) + "OMIT_DATETIME_FUNCS", +#endif +#ifdef SQLITE_OMIT_DECLTYPE + "OMIT_DECLTYPE", +#endif +#ifdef SQLITE_OMIT_DEPRECATED + "OMIT_DEPRECATED", +#endif +#ifdef SQLITE_OMIT_DESERIALIZE + "OMIT_DESERIALIZE", +#endif +#ifdef SQLITE_OMIT_DISKIO + "OMIT_DISKIO", +#endif +#ifdef SQLITE_OMIT_EXPLAIN + "OMIT_EXPLAIN", +#endif +#ifdef SQLITE_OMIT_FLAG_PRAGMAS + "OMIT_FLAG_PRAGMAS", +#endif +#ifdef SQLITE_OMIT_FLOATING_POINT + "OMIT_FLOATING_POINT", +#endif +#ifdef SQLITE_OMIT_FOREIGN_KEY + "OMIT_FOREIGN_KEY", +#endif +#ifdef SQLITE_OMIT_GET_TABLE + "OMIT_GET_TABLE", +#endif +#ifdef SQLITE_OMIT_HEX_INTEGER + "OMIT_HEX_INTEGER", +#endif +#ifdef SQLITE_OMIT_INCRBLOB + "OMIT_INCRBLOB", +#endif +#ifdef SQLITE_OMIT_INTEGRITY_CHECK + "OMIT_INTEGRITY_CHECK", +#endif +#ifdef SQLITE_OMIT_INTROSPECTION_PRAGMAS + "OMIT_INTROSPECTION_PRAGMAS", +#endif +#ifdef SQLITE_OMIT_JSON + "OMIT_JSON", +#endif +#ifdef SQLITE_OMIT_LIKE_OPTIMIZATION + "OMIT_LIKE_OPTIMIZATION", +#endif +#ifdef SQLITE_OMIT_LOAD_EXTENSION + "OMIT_LOAD_EXTENSION", +#endif +#ifdef SQLITE_OMIT_LOCALTIME + "OMIT_LOCALTIME", +#endif +#ifdef SQLITE_OMIT_LOOKASIDE + "OMIT_LOOKASIDE", +#endif +#ifdef SQLITE_OMIT_MEMORYDB + "OMIT_MEMORYDB", +#endif +#ifdef SQLITE_OMIT_OR_OPTIMIZATION + "OMIT_OR_OPTIMIZATION", +#endif +#ifdef SQLITE_OMIT_PAGER_PRAGMAS + "OMIT_PAGER_PRAGMAS", +#endif +#ifdef SQLITE_OMIT_PARSER_TRACE + "OMIT_PARSER_TRACE", +#endif +#ifdef SQLITE_OMIT_POPEN + "OMIT_POPEN", +#endif +#ifdef SQLITE_OMIT_PRAGMA + "OMIT_PRAGMA", +#endif +#ifdef SQLITE_OMIT_PROGRESS_CALLBACK + "OMIT_PROGRESS_CALLBACK", +#endif +#ifdef SQLITE_OMIT_QUICKBALANCE + "OMIT_QUICKBALANCE", +#endif +#ifdef SQLITE_OMIT_REINDEX + "OMIT_REINDEX", +#endif +#ifdef SQLITE_OMIT_SCHEMA_PRAGMAS + "OMIT_SCHEMA_PRAGMAS", +#endif +#ifdef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS + "OMIT_SCHEMA_VERSION_PRAGMAS", +#endif +#ifdef SQLITE_OMIT_SHARED_CACHE + "OMIT_SHARED_CACHE", +#endif +#ifdef SQLITE_OMIT_SHUTDOWN_DIRECTORIES + "OMIT_SHUTDOWN_DIRECTORIES", +#endif +#ifdef SQLITE_OMIT_SUBQUERY + "OMIT_SUBQUERY", +#endif +#ifdef SQLITE_OMIT_TCL_VARIABLE + "OMIT_TCL_VARIABLE", +#endif +#ifdef SQLITE_OMIT_TEMPDB + "OMIT_TEMPDB", +#endif +#ifdef SQLITE_OMIT_TEST_CONTROL + "OMIT_TEST_CONTROL", +#endif +#ifdef SQLITE_OMIT_TRACE +# if SQLITE_OMIT_TRACE != 1 + "OMIT_TRACE=" CTIMEOPT_VAL(SQLITE_OMIT_TRACE), +# endif +#endif +#ifdef SQLITE_OMIT_TRIGGER + "OMIT_TRIGGER", +#endif +#ifdef SQLITE_OMIT_TRUNCATE_OPTIMIZATION + "OMIT_TRUNCATE_OPTIMIZATION", +#endif +#ifdef SQLITE_OMIT_UTF16 + "OMIT_UTF16", +#endif +#ifdef SQLITE_OMIT_VACUUM + "OMIT_VACUUM", +#endif +#ifdef SQLITE_OMIT_VIEW + "OMIT_VIEW", +#endif +#ifdef SQLITE_OMIT_VIRTUALTABLE + "OMIT_VIRTUALTABLE", +#endif +#ifdef SQLITE_OMIT_WAL + "OMIT_WAL", +#endif +#ifdef SQLITE_OMIT_WSD + "OMIT_WSD", +#endif +#ifdef SQLITE_OMIT_XFER_OPT + "OMIT_XFER_OPT", +#endif +#ifdef SQLITE_PERFORMANCE_TRACE + "PERFORMANCE_TRACE", +#endif +#ifdef SQLITE_POWERSAFE_OVERWRITE +# if SQLITE_POWERSAFE_OVERWRITE != 1 + "POWERSAFE_OVERWRITE=" CTIMEOPT_VAL(SQLITE_POWERSAFE_OVERWRITE), +# endif +#endif +#ifdef SQLITE_PREFER_PROXY_LOCKING + "PREFER_PROXY_LOCKING", +#endif +#ifdef SQLITE_PROXY_DEBUG + "PROXY_DEBUG", +#endif +#ifdef SQLITE_REVERSE_UNORDERED_SELECTS + "REVERSE_UNORDERED_SELECTS", +#endif +#ifdef SQLITE_RTREE_INT_ONLY + "RTREE_INT_ONLY", +#endif +#ifdef SQLITE_SECURE_DELETE + "SECURE_DELETE", +#endif +#ifdef SQLITE_SMALL_STACK + "SMALL_STACK", +#endif +#ifdef SQLITE_SORTER_PMASZ + "SORTER_PMASZ=" CTIMEOPT_VAL(SQLITE_SORTER_PMASZ), +#endif +#ifdef SQLITE_SOUNDEX + "SOUNDEX", +#endif +#ifdef SQLITE_STAT4_SAMPLES + "STAT4_SAMPLES=" CTIMEOPT_VAL(SQLITE_STAT4_SAMPLES), +#endif +#ifdef SQLITE_STMTJRNL_SPILL + "STMTJRNL_SPILL=" CTIMEOPT_VAL(SQLITE_STMTJRNL_SPILL), +#endif +#ifdef SQLITE_SUBSTR_COMPATIBILITY + "SUBSTR_COMPATIBILITY", +#endif +#if (!defined(SQLITE_WIN32_MALLOC) \ + && !defined(SQLITE_ZERO_MALLOC) \ + && !defined(SQLITE_MEMDEBUG) \ + ) || defined(SQLITE_SYSTEM_MALLOC) + "SYSTEM_MALLOC", +#endif +#ifdef SQLITE_TCL + "TCL", +#endif +#ifdef SQLITE_TEMP_STORE + "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE), +#endif +#ifdef SQLITE_TEST + "TEST", +#endif +#if defined(SQLITE_THREADSAFE) + "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE), +#elif defined(THREADSAFE) + "THREADSAFE=" CTIMEOPT_VAL(THREADSAFE), +#else + "THREADSAFE=1", +#endif +#ifdef SQLITE_UNLINK_AFTER_CLOSE + "UNLINK_AFTER_CLOSE", +#endif +#ifdef SQLITE_UNTESTABLE + "UNTESTABLE", +#endif +#ifdef SQLITE_USER_AUTHENTICATION + "USER_AUTHENTICATION", +#endif +#ifdef SQLITE_USE_ALLOCA + "USE_ALLOCA", +#endif +#ifdef SQLITE_USE_FCNTL_TRACE + "USE_FCNTL_TRACE", +#endif +#ifdef SQLITE_USE_URI + "USE_URI", +#endif +#ifdef SQLITE_VDBE_COVERAGE + "VDBE_COVERAGE", +#endif +#ifdef SQLITE_WIN32_MALLOC + "WIN32_MALLOC", +#endif +#ifdef SQLITE_ZERO_MALLOC + "ZERO_MALLOC", +#endif + +} ; + +SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){ + *pnOpt = sizeof(sqlite3azCompileOpt) / sizeof(sqlite3azCompileOpt[0]); + return (const char**)sqlite3azCompileOpt; +} + +#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ + +/************** End of ctime.c ***********************************************/ /************** Begin file global.c ******************************************/ /* ** 2008 June 13 @@ -19048,7 +22254,7 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt); /* #include "sqliteInt.h" */ /* An array to map all upper-case characters into their corresponding -** lower-case character. +** lower-case character. ** ** SQLite only considers US-ASCII (or EBCDIC) characters. We do not ** handle case conversions for the UTF character set since the tables @@ -19070,7 +22276,7 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { 198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215, 216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233, 234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251, - 252,253,254,255 + 252,253,254,255, #endif #ifdef SQLITE_EBCDIC 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 0x */ @@ -19090,7 +22296,35 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { 224,225,162,163,164,165,166,167,168,169,234,235,236,237,238,239, /* Ex */ 240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255, /* Fx */ #endif +/* All of the upper-to-lower conversion data is above. The following +** 18 integers are completely unrelated. They are appended to the +** sqlite3UpperToLower[] array to avoid UBSAN warnings. Here's what is +** going on: +** +** The SQL comparison operators (<>, =, >, <=, <, and >=) are implemented +** by invoking sqlite3MemCompare(A,B) which compares values A and B and +** returns negative, zero, or positive if A is less then, equal to, or +** greater than B, respectively. Then the true false results is found by +** consulting sqlite3aLTb[opcode], sqlite3aEQb[opcode], or +** sqlite3aGTb[opcode] depending on whether the result of compare(A,B) +** is negative, zero, or positive, where opcode is the specific opcode. +** The only works because the comparison opcodes are consecutive and in +** this order: NE EQ GT LE LT GE. Various assert()s throughout the code +** ensure that is the case. +** +** These elements must be appended to another array. Otherwise the +** index (here shown as [256-OP_Ne]) would be out-of-bounds and thus +** be undefined behavior. That's goofy, but the C-standards people thought +** it was a good idea, so here we are. +*/ +/* NE EQ GT LE LT GE */ + 1, 0, 0, 1, 1, 0, /* aLTb[]: Use when compare(A,B) less than zero */ + 0, 1, 0, 1, 0, 1, /* aEQb[]: Use when compare(A,B) equals zero */ + 1, 0, 1, 0, 0, 1 /* aGTb[]: Use when compare(A,B) greater than zero*/ }; +SQLITE_PRIVATE const unsigned char *sqlite3aLTb = &sqlite3UpperToLower[256-OP_Ne]; +SQLITE_PRIVATE const unsigned char *sqlite3aEQb = &sqlite3UpperToLower[256+6-OP_Ne]; +SQLITE_PRIVATE const unsigned char *sqlite3aGTb = &sqlite3UpperToLower[256+12-OP_Ne]; /* ** The following 256 byte lookup table is used to support SQLites built-in @@ -19102,7 +22336,7 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { ** isalnum() 0x06 ** isxdigit() 0x08 ** toupper() 0x20 -** SQLite identifier character 0x40 +** SQLite identifier character 0x40 $, _, or non-ascii ** Quote character 0x80 ** ** Bit 0x20 is set if the mapped character requires translation to upper @@ -19115,12 +22349,11 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { ** The equivalent of tolower() is implemented using the sqlite3UpperToLower[] ** array. tolower() is used more often than toupper() by SQLite. ** -** Bit 0x40 is set if the character is non-alphanumeric and can be used in an +** Bit 0x40 is set if the character is non-alphanumeric and can be used in an ** SQLite identifier. Identifiers are alphanumerics, "_", "$", and any ** non-ASCII UTF character. Hence the test for whether or not a character is ** part of an identifier is 0x46. */ -#ifdef SQLITE_ASCII SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00..07 ........ */ 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, /* 08..0f ........ */ @@ -19158,7 +22391,6 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* f0..f7 ........ */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 /* f8..ff ........ */ }; -#endif /* EVIDENCE-OF: R-02982-34736 In order to maintain full backwards ** compatibility for legacy applications, the URI filename capability is @@ -19170,24 +22402,24 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { ** EVIDENCE-OF: R-43642-56306 By default, URI handling is globally ** disabled. The default value may be changed by compiling with the ** SQLITE_USE_URI symbol defined. -** -** URI filenames are enabled by default if SQLITE_HAS_CODEC is -** enabled. */ #ifndef SQLITE_USE_URI -# ifdef SQLITE_HAS_CODEC -# define SQLITE_USE_URI 1 -# else -# define SQLITE_USE_URI 0 -# endif +# define SQLITE_USE_URI 0 #endif /* EVIDENCE-OF: R-38720-18127 The default setting is determined by the ** SQLITE_ALLOW_COVERING_INDEX_SCAN compile-time option, or is "on" if ** that compile-time option is omitted. */ -#ifndef SQLITE_ALLOW_COVERING_INDEX_SCAN +#if !defined(SQLITE_ALLOW_COVERING_INDEX_SCAN) # define SQLITE_ALLOW_COVERING_INDEX_SCAN 1 +#else +# if !SQLITE_ALLOW_COVERING_INDEX_SCAN +# error "Compile-time disabling of covering index scan using the\ + -DSQLITE_ALLOW_COVERING_INDEX_SCAN=0 option is deprecated.\ + Contact SQLite developers if this is a problem for you, and\ + delete this #error macro to continue with your build." +# endif #endif /* The minimum PMA size is set to this value multiplied by the database @@ -19205,7 +22437,7 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { ** if journal_mode=MEMORY or if temp_store=MEMORY, regardless of this ** setting.) */ -#ifndef SQLITE_STMTJRNL_SPILL +#ifndef SQLITE_STMTJRNL_SPILL # define SQLITE_STMTJRNL_SPILL (64*1024) #endif @@ -19216,12 +22448,28 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { ** changed as start-time using sqlite3_config(SQLITE_CONFIG_LOOKASIDE) ** or at run-time for an individual database connection using ** sqlite3_db_config(db, SQLITE_DBCONFIG_LOOKASIDE); +** +** With the two-size-lookaside enhancement, less lookaside is required. +** The default configuration of 1200,40 actually provides 30 1200-byte slots +** and 93 128-byte slots, which is more lookaside than is available +** using the older 1200,100 configuration without two-size-lookaside. */ #ifndef SQLITE_DEFAULT_LOOKASIDE -# define SQLITE_DEFAULT_LOOKASIDE 1200,100 +# ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE +# define SQLITE_DEFAULT_LOOKASIDE 1200,100 /* 120KB of memory */ +# else +# define SQLITE_DEFAULT_LOOKASIDE 1200,40 /* 48KB of memory */ +# endif #endif +/* The default maximum size of an in-memory database created using +** sqlite3_deserialize() +*/ +#ifndef SQLITE_MEMDB_DEFAULT_MAXSIZE +# define SQLITE_MEMDB_DEFAULT_MAXSIZE 1073741824 +#endif + /* ** The following singleton contains the global configuration for ** the SQLite library. @@ -19233,6 +22481,8 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { SQLITE_USE_URI, /* bOpenUri */ SQLITE_ALLOW_COVERING_INDEX_SCAN, /* bUseCis */ 0, /* bSmallMalloc */ + 1, /* bExtraSchemaChecks */ + sizeof(LONGDOUBLE_TYPE)>8, /* bUseLongDouble */ 0x7ffffffe, /* mxStrlen */ 0, /* neverCorrupt */ SQLITE_DEFAULT_LOOKASIDE, /* szLookaside, nLookaside */ @@ -19269,12 +22519,20 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { 0, /* xVdbeBranch */ 0, /* pVbeBranchArg */ #endif +#ifndef SQLITE_OMIT_DESERIALIZE + SQLITE_MEMDB_DEFAULT_MAXSIZE, /* mxMemdbSize */ +#endif #ifndef SQLITE_UNTESTABLE 0, /* xTestCallback */ #endif 0, /* bLocaltimeFault */ + 0, /* xAltLocaltime */ 0x7ffffffe, /* iOnceResetThreshold */ - SQLITE_DEFAULT_SORTERREF_SIZE /* szSorterRef */ + SQLITE_DEFAULT_SORTERREF_SIZE, /* szSorterRef */ + 0, /* iPrngSeed */ +#ifdef SQLITE_DEBUG + {0,0,0,0,0,0}, /* aTune */ +#endif }; /* @@ -19284,13 +22542,17 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { */ SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions; +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG) /* -** Constant tokens for values 0 and 1. +** Counter used for coverage testing. Does not come into play for +** release builds. +** +** Access to this global variable is not mutex protected. This might +** result in TSAN warnings. But as the variable does not exist in +** release builds, that should not be a concern. */ -SQLITE_PRIVATE const Token sqlite3IntTokens[] = { - { "0", 1 }, - { "1", 1 } -}; +SQLITE_PRIVATE unsigned int sqlite3CoverageCounter; +#endif /* SQLITE_COVERAGE_TEST || SQLITE_DEBUG */ #ifdef VDBE_PROFILE /* @@ -19322,12 +22584,18 @@ SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt = 0; SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000; #endif +/* +** Tracing flags set by SQLITE_TESTCTRL_TRACEFLAGS. +*/ +SQLITE_PRIVATE u32 sqlite3TreeTrace = 0; +SQLITE_PRIVATE u32 sqlite3WhereTrace = 0; + /* #include "opcodes.h" */ /* ** Properties of opcodes. The OPFLG_INITIALIZER macro is ** created by mkopcodeh.awk during compilation. Data is obtained ** from the comments following the "case OP_xxxx:" statements in -** the vdbe.c file. +** the vdbe.c file. */ SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; @@ -19336,6 +22604,36 @@ SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; */ SQLITE_PRIVATE const char sqlite3StrBINARY[] = "BINARY"; +/* +** Standard typenames. These names must match the COLTYPE_* definitions. +** Adjust the SQLITE_N_STDTYPE value if adding or removing entries. +** +** sqlite3StdType[] The actual names of the datatypes. +** +** sqlite3StdTypeLen[] The length (in bytes) of each entry +** in sqlite3StdType[]. +** +** sqlite3StdTypeAffinity[] The affinity associated with each entry +** in sqlite3StdType[]. +*/ +SQLITE_PRIVATE const unsigned char sqlite3StdTypeLen[] = { 3, 4, 3, 7, 4, 4 }; +SQLITE_PRIVATE const char sqlite3StdTypeAffinity[] = { + SQLITE_AFF_NUMERIC, + SQLITE_AFF_BLOB, + SQLITE_AFF_INTEGER, + SQLITE_AFF_INTEGER, + SQLITE_AFF_REAL, + SQLITE_AFF_TEXT +}; +SQLITE_PRIVATE const char *sqlite3StdType[] = { + "ANY", + "BLOB", + "INT", + "INTEGER", + "REAL", + "TEXT" +}; + /************** End of global.c **********************************************/ /************** Begin file status.c ******************************************/ /* @@ -19389,7 +22687,8 @@ SQLITE_PRIVATE const char sqlite3StrBINARY[] = "BINARY"; ** "explain" P4 display logic is enabled. */ #if !defined(SQLITE_OMIT_EXPLAIN) || !defined(NDEBUG) \ - || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) + || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) \ + || defined(SQLITE_ENABLE_BYTECODE_VTAB) # define VDBE_DISPLAY_P4 1 #else # define VDBE_DISPLAY_P4 0 @@ -19413,6 +22712,9 @@ typedef struct VdbeSorter VdbeSorter; /* Elements of the linked list at Vdbe.pAuxData */ typedef struct AuxData AuxData; +/* A cache of large TEXT or BLOB values in a VdbeCursor */ +typedef struct VdbeTxtBlbCache VdbeTxtBlbCache; + /* Types of VDBE cursors */ #define CURTYPE_BTREE 0 #define CURTYPE_SORTER 1 @@ -19432,7 +22734,7 @@ typedef struct AuxData AuxData; typedef struct VdbeCursor VdbeCursor; struct VdbeCursor { u8 eCurType; /* One of the CURTYPE_* values above */ - i8 iDb; /* Index of cursor database in db->aDb[] (or -1) */ + i8 iDb; /* Index of cursor database in db->aDb[] */ u8 nullRow; /* True if pointing to a row with no data */ u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ u8 isTable; /* True for rowid tables. False for indexes */ @@ -19443,9 +22745,14 @@ struct VdbeCursor { Bool isEphemeral:1; /* True for an ephemeral table */ Bool useRandomRowid:1; /* Generate new record numbers semi-randomly */ Bool isOrdered:1; /* True if the table is not BTREE_UNORDERED */ - Btree *pBtx; /* Separate file holding temporary table */ + Bool noReuse:1; /* OpenEphemeral may not reuse this cursor */ + Bool colCache:1; /* pCache pointer is initialized and non-NULL */ + u16 seekHit; /* See the OP_SeekHit and OP_IfNoHope opcodes */ + union { /* pBtx for isEphermeral. pAltMap otherwise */ + Btree *pBtx; /* Separate file holding temporary table */ + u32 *aAltMap; /* Mapping from table to index column numbers */ + } ub; i64 seqCount; /* Sequence counter */ - int *aAltMap; /* Mapping from table to index column numbers */ /* Cached OP_Column parse information is only valid if cacheStatus matches ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of @@ -19480,6 +22787,7 @@ struct VdbeCursor { #ifdef SQLITE_ENABLE_COLUMN_USED_MASK u64 maskUsed; /* Mask of columns used by this cursor */ #endif + VdbeTxtBlbCache *pCache; /* Cache of large TEXT or BLOB values */ /* 2*nField extra array elements allocated for aType[], beyond the one ** static element declared in the structure. nField total array slots for @@ -19487,17 +22795,35 @@ struct VdbeCursor { u32 aType[1]; /* Type values record decode. MUST BE LAST */ }; +/* Return true if P is a null-only cursor +*/ +#define IsNullCursor(P) \ + ((P)->eCurType==CURTYPE_PSEUDO && (P)->nullRow && (P)->seekResult==0) /* ** A value for VdbeCursor.cacheStatus that means the cache is always invalid. */ #define CACHE_STALE 0 +/* +** Large TEXT or BLOB values can be slow to load, so we want to avoid +** loading them more than once. For that reason, large TEXT and BLOB values +** can be stored in a cache defined by this object, and attached to the +** VdbeCursor using the pCache field. +*/ +struct VdbeTxtBlbCache { + char *pCValue; /* A RCStr buffer to hold the value */ + i64 iOffset; /* File offset of the row being cached */ + int iCol; /* Column for which the cache is valid */ + u32 cacheStatus; /* Vdbe.cacheCtr value */ + u32 colCacheCtr; /* Column cache counter */ +}; + /* ** When a sub-program is executed (OP_Program), a structure of this type ** is allocated to store the current value of the program counter, as ** well as the current memory cell array and various other frame specific -** values stored in the Vdbe struct. When the sub-program is finished, +** values stored in the Vdbe struct. When the sub-program is finished, ** these values are copied back to the Vdbe from the VdbeFrame structure, ** restoring the state of the VM to as it was before the sub-program ** began executing. @@ -19519,23 +22845,32 @@ struct VdbeFrame { Vdbe *v; /* VM this frame belongs to */ VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */ Op *aOp; /* Program instructions for parent frame */ - i64 *anExec; /* Event counters from parent frame */ Mem *aMem; /* Array of memory cells for parent frame */ VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */ u8 *aOnce; /* Bitmask used by OP_Once */ void *token; /* Copy of SubProgram.token */ i64 lastRowid; /* Last insert rowid (sqlite3.lastRowid) */ AuxData *pAuxData; /* Linked list of auxdata allocations */ +#if SQLITE_DEBUG + u32 iFrameMagic; /* magic number for sanity checking */ +#endif int nCursor; /* Number of entries in apCsr */ int pc; /* Program Counter in parent (calling) frame */ int nOp; /* Size of aOp array */ int nMem; /* Number of entries in aMem */ int nChildMem; /* Number of memory cells for child frame */ int nChildCsr; /* Number of cursors for child frame */ - int nChange; /* Statement changes (Vdbe.nChange) */ - int nDbChange; /* Value of db->nChange */ + i64 nChange; /* Statement changes (Vdbe.nChange) */ + i64 nDbChange; /* Value of db->nChange */ }; +/* Magic number for sanity checking on VdbeFrame objects */ +#define SQLITE_FRAME_MAGIC 0x879fb71e + +/* +** Return a pointer to the array of registers allocated for use +** by a VdbeFrame. +*/ #define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))]) /* @@ -19550,23 +22885,21 @@ struct sqlite3_value { int nZero; /* Extra zero bytes when MEM_Zero and MEM_Blob set */ const char *zPType; /* Pointer type when MEM_Term|MEM_Subtype|MEM_Null */ FuncDef *pDef; /* Used only when flags==MEM_Agg */ - RowSet *pRowSet; /* Used only when flags==MEM_RowSet */ - VdbeFrame *pFrame; /* Used when flags==MEM_Frame */ } u; + char *z; /* String or BLOB value */ + int n; /* Number of characters in string value, excluding '\0' */ u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ u8 eSubtype; /* Subtype for this value */ - int n; /* Number of characters in string value, excluding '\0' */ - char *z; /* String or BLOB value */ /* ShallowCopy only needs to copy the information above */ - char *zMalloc; /* Space to hold MEM_Str or MEM_Blob if szMalloc>0 */ + sqlite3 *db; /* The associated database connection */ int szMalloc; /* Size of the zMalloc allocation */ u32 uTemp; /* Transient storage for serial_type in OP_MakeRecord */ - sqlite3 *db; /* The associated database connection */ + char *zMalloc; /* Space to hold MEM_Str or MEM_Blob if szMalloc>0 */ void (*xDel)(void*);/* Destructor for Mem.z - only valid if MEM_Dyn */ #ifdef SQLITE_DEBUG Mem *pScopyFrom; /* This Mem is a shallow copy of pScopyFrom */ - void *pFiller; /* So that sizeof(Mem) is a multiple of 8 */ + u16 mScopyFlags; /* flags value immediately after the shallow copy */ #endif }; @@ -19574,11 +22907,43 @@ struct sqlite3_value { ** Size of struct Mem not including the Mem.zMalloc member or anything that ** follows. */ -#define MEMCELLSIZE offsetof(Mem,zMalloc) +#define MEMCELLSIZE offsetof(Mem,db) -/* One or more of the following flags are set to indicate the validOK +/* One or more of the following flags are set to indicate the ** representations of the value stored in the Mem struct. ** +** * MEM_Null An SQL NULL value +** +** * MEM_Null|MEM_Zero An SQL NULL with the virtual table +** UPDATE no-change flag set +** +** * MEM_Null|MEM_Term| An SQL NULL, but also contains a +** MEM_Subtype pointer accessible using +** sqlite3_value_pointer(). +** +** * MEM_Null|MEM_Cleared Special SQL NULL that compares non-equal +** to other NULLs even using the IS operator. +** +** * MEM_Str A string, stored in Mem.z with +** length Mem.n. Zero-terminated if +** MEM_Term is set. This flag is +** incompatible with MEM_Blob and +** MEM_Null, but can appear with MEM_Int, +** MEM_Real, and MEM_IntReal. +** +** * MEM_Blob A blob, stored in Mem.z length Mem.n. +** Incompatible with MEM_Str, MEM_Null, +** MEM_Int, MEM_Real, and MEM_IntReal. +** +** * MEM_Blob|MEM_Zero A blob in Mem.z of length Mem.n plus +** MEM.u.i extra 0x00 bytes at the end. +** +** * MEM_Int Integer stored in Mem.u.i. +** +** * MEM_Real Real stored in Mem.u.r. +** +** * MEM_IntReal Real stored as an integer in Mem.u.i. +** ** If the MEM_Null flag is set, then the value is an SQL NULL value. ** For a pointer type created using sqlite3_bind_pointer() or ** sqlite3_result_pointer() the MEM_Term and MEM_Subtype flags are also set. @@ -19586,44 +22951,41 @@ struct sqlite3_value { ** If the MEM_Str flag is set then Mem.z points at a string representation. ** Usually this is encoded in the same unicode encoding as the main ** database (see below for exceptions). If the MEM_Term flag is also -** set, then the string is nul terminated. The MEM_Int and MEM_Real +** set, then the string is nul terminated. The MEM_Int and MEM_Real ** flags may coexist with the MEM_Str flag. */ +#define MEM_Undefined 0x0000 /* Value is undefined */ #define MEM_Null 0x0001 /* Value is NULL (or a pointer) */ #define MEM_Str 0x0002 /* Value is a string */ #define MEM_Int 0x0004 /* Value is an integer */ #define MEM_Real 0x0008 /* Value is a real number */ #define MEM_Blob 0x0010 /* Value is a BLOB */ -#define MEM_AffMask 0x001f /* Mask of affinity bits */ -#define MEM_RowSet 0x0020 /* Value is a RowSet object */ -#define MEM_Frame 0x0040 /* Value is a VdbeFrame object */ -#define MEM_Undefined 0x0080 /* Value is undefined */ -#define MEM_Cleared 0x0100 /* NULL set by OP_Null, not from data */ -#define MEM_TypeMask 0xc1ff /* Mask of type bits */ +#define MEM_IntReal 0x0020 /* MEM_Int that stringifies like MEM_Real */ +#define MEM_AffMask 0x003f /* Mask of affinity bits */ - -/* Whenever Mem contains a valid string or blob representation, one of -** the following flags must be set to determine the memory management -** policy for Mem.z. The MEM_Term flag tells us whether or not the -** string is \000 or \u0000 terminated +/* Extra bits that modify the meanings of the core datatypes above */ +#define MEM_FromBind 0x0040 /* Value originates from sqlite3_bind() */ + /* 0x0080 // Available */ +#define MEM_Cleared 0x0100 /* NULL set by OP_Null, not from data */ #define MEM_Term 0x0200 /* String in Mem.z is zero terminated */ -#define MEM_Dyn 0x0400 /* Need to call Mem.xDel() on Mem.z */ -#define MEM_Static 0x0800 /* Mem.z points to a static string */ -#define MEM_Ephem 0x1000 /* Mem.z points to an ephemeral string */ -#define MEM_Agg 0x2000 /* Mem.z points to an agg function context */ -#define MEM_Zero 0x4000 /* Mem.i contains count of 0s appended to blob */ -#define MEM_Subtype 0x8000 /* Mem.eSubtype is valid */ -#ifdef SQLITE_OMIT_INCRBLOB - #undef MEM_Zero - #define MEM_Zero 0x0000 -#endif +#define MEM_Zero 0x0400 /* Mem.i contains count of 0s appended to blob */ +#define MEM_Subtype 0x0800 /* Mem.eSubtype is valid */ +#define MEM_TypeMask 0x0dbf /* Mask of type bits */ + +/* Bits that determine the storage for Mem.z for a string or blob or +** aggregate accumulator. +*/ +#define MEM_Dyn 0x1000 /* Need to call Mem.xDel() on Mem.z */ +#define MEM_Static 0x2000 /* Mem.z points to a static string */ +#define MEM_Ephem 0x4000 /* Mem.z points to an ephemeral string */ +#define MEM_Agg 0x8000 /* Mem.z points to an agg function context */ /* Return TRUE if Mem X contains dynamically allocated content - anything ** that needs to be deallocated to avoid a leak. */ #define VdbeMemDynamic(X) \ - (((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame))!=0) + (((X)->flags&(MEM_Agg|MEM_Dyn))!=0) /* ** Clear any existing type flags from a Mem and replace them with f @@ -19632,15 +22994,26 @@ struct sqlite3_value { ((p)->flags = ((p)->flags&~(MEM_TypeMask|MEM_Zero))|f) /* -** Return true if a memory cell is not marked as invalid. This macro +** True if Mem X is a NULL-nochng type. +*/ +#define MemNullNochng(X) \ + (((X)->flags&MEM_TypeMask)==(MEM_Null|MEM_Zero) \ + && (X)->n==0 && (X)->u.nZero==0) + +/* +** Return true if a memory cell has been initialized and is valid. ** is for use inside assert() statements only. +** +** A Memory cell is initialized if at least one of the +** MEM_Null, MEM_Str, MEM_Int, MEM_Real, MEM_Blob, or MEM_IntReal bits +** is set. It is "undefined" if all those bits are zero. */ #ifdef SQLITE_DEBUG -#define memIsValid(M) ((M)->flags & MEM_Undefined)==0 +#define memIsValid(M) ((M)->flags & MEM_AffMask)!=0 #endif /* -** Each auxiliary data pointer stored by a user defined function +** Each auxiliary data pointer stored by a user defined function ** implementation calling sqlite3_set_auxdata() is stored in an instance ** of this structure. All such structures associated with a single VM ** are stored in a linked list headed at Vdbe.pAuxData. All are destroyed @@ -19674,6 +23047,7 @@ struct sqlite3_context { Vdbe *pVdbe; /* The VM that owns this context */ int iOp; /* Instruction number of OP_Function */ int isError; /* Error code returned by the function. */ + u8 enc; /* Encoding to use for results */ u8 skipFlag; /* Skip accumulator loading if true */ u8 argc; /* Number of arguments */ sqlite3_value *argv[1]; /* Argument set */ @@ -19684,9 +23058,21 @@ struct sqlite3_context { */ typedef unsigned bft; /* Bit Field Type */ +/* The ScanStatus object holds a single value for the +** sqlite3_stmt_scanstatus() interface. +** +** aAddrRange[]: +** This array is used by ScanStatus elements associated with EQP +** notes that make an SQLITE_SCANSTAT_NCYCLE value available. It is +** an array of up to 3 ranges of VM addresses for which the Vdbe.anCycle[] +** values should be summed to calculate the NCYCLE value. Each pair of +** integer addresses is a start and end address (both inclusive) for a range +** instructions. A start value of 0 indicates an empty range. +*/ typedef struct ScanStatus ScanStatus; struct ScanStatus { int addrExplain; /* OP_Explain for loop */ + int aAddrRange[6]; int addrLoop; /* Address of "loops" counter */ int addrVisit; /* Address of "rows visited" counter */ int iSelectID; /* The "Select-ID" for this loop */ @@ -19694,6 +23080,19 @@ struct ScanStatus { char *zName; /* Name of table or index */ }; +/* The DblquoteStr object holds the text of a double-quoted +** string for a prepared statement. A linked list of these objects +** is constructed during statement parsing and is held on Vdbe.pDblStr. +** When computing a normalized SQL statement for an SQL statement, that +** list is consulted for each double-quoted identifier to see if the +** identifier should really be a string literal. +*/ +typedef struct DblquoteStr DblquoteStr; +struct DblquoteStr { + DblquoteStr *pNextStr; /* Next string literal in the list */ + char z[8]; /* Dequoted value for the string */ +}; + /* ** An instance of the virtual machine. This structure contains the complete ** state of the virtual machine. @@ -19703,58 +23102,63 @@ struct ScanStatus { */ struct Vdbe { sqlite3 *db; /* The database connection that owns this statement */ - Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ + Vdbe **ppVPrev,*pVNext; /* Linked list of VDBEs with the same Vdbe.db */ Parse *pParse; /* Parsing context used to create this Vdbe */ ynVar nVar; /* Number of entries in aVar[] */ - u32 magic; /* Magic number for sanity checking */ int nMem; /* Number of memory locations currently allocated */ int nCursor; /* Number of slots in apCsr[] */ u32 cacheCtr; /* VdbeCursor row cache generation counter */ int pc; /* The program counter */ int rc; /* Value to return */ - int nChange; /* Number of db changes made since last reset */ - int iStatement; /* Statement number (or 0 if has not opened stmt) */ + i64 nChange; /* Number of db changes made since last reset */ + int iStatement; /* Statement number (or 0 if has no opened stmt) */ i64 iCurrentTime; /* Value of julianday('now') for this statement */ i64 nFkConstraint; /* Number of imm. FK constraints this VM */ i64 nStmtDefCons; /* Number of def. constraints when stmt started */ i64 nStmtDefImmCons; /* Number of def. imm constraints when stmt started */ + Mem *aMem; /* The memory locations */ + Mem **apArg; /* Arguments to currently executing user function */ + VdbeCursor **apCsr; /* One element of this array for each open cursor */ + Mem *aVar; /* Values for the OP_Variable opcode. */ /* When allocating a new Vdbe object, all of the fields below should be ** initialized to zero or NULL */ Op *aOp; /* Space to hold the virtual machine's program */ - Mem *aMem; /* The memory locations */ - Mem **apArg; /* Arguments to currently executing user function */ + int nOp; /* Number of instructions in the program */ + int nOpAlloc; /* Slots allocated for aOp[] */ Mem *aColName; /* Column names to return */ - Mem *pResultSet; /* Pointer to an array of results */ + Mem *pResultRow; /* Current output row */ char *zErrMsg; /* Error message written here */ - VdbeCursor **apCsr; /* One element of this array for each open cursor */ - Mem *aVar; /* Values for the OP_Variable opcode. */ VList *pVList; /* Name of variables */ #ifndef SQLITE_OMIT_TRACE i64 startTime; /* Time when query started - used for profiling */ #endif - int nOp; /* Number of instructions in the program */ #ifdef SQLITE_DEBUG int rcApp; /* errcode set by sqlite3_result_error_code() */ u32 nWrite; /* Number of write operations that have occurred */ #endif u16 nResColumn; /* Number of columns in one row of the result set */ + u16 nResAlloc; /* Column slots allocated to aColName[] */ u8 errorAction; /* Recovery action to do in case of an error */ u8 minWriteFileFormat; /* Minimum file format for writable database files */ u8 prepFlags; /* SQLITE_PREPARE_* flags */ - bft expired:1; /* True if the VM needs to be recompiled */ - bft doingRerun:1; /* True if rerunning after an auto-reprepare */ - bft explain:2; /* True if EXPLAIN present on SQL command */ + u8 eVdbeState; /* On of the VDBE_*_STATE values */ + bft expired:2; /* 1: recompile VM immediately 2: when convenient */ + bft explain:2; /* 0: normal, 1: EXPLAIN, 2: EXPLAIN QUERY PLAN */ bft changeCntOn:1; /* True to update the change-counter */ - bft runOnlyOnce:1; /* Automatically expire on reset */ bft usesStmtJournal:1; /* True if uses a statement journal */ bft readOnly:1; /* True for statements that do not write */ bft bIsReader:1; /* True for statements that read */ + bft haveEqpOps:1; /* Bytecode supports EXPLAIN QUERY PLAN */ yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */ yDbMask lockMask; /* Subset of btreeMask that requires a lock */ - u32 aCounter[7]; /* Counters used by sqlite3_stmt_status() */ + u32 aCounter[9]; /* Counters used by sqlite3_stmt_status() */ char *zSql; /* Text of the SQL statement that generated this */ +#ifdef SQLITE_ENABLE_NORMALIZE + char *zNormSql; /* Normalization of the associated SQL statement */ + DblquoteStr *pDblStr; /* List of double-quoted string literals */ +#endif void *pFree; /* Free this when deleting the vdbe */ VdbeFrame *pFrame; /* Parent frame */ VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */ @@ -19763,23 +23167,21 @@ struct Vdbe { SubProgram *pProgram; /* Linked list of all sub-programs used by VM */ AuxData *pAuxData; /* Linked list of auxdata allocations */ #ifdef SQLITE_ENABLE_STMT_SCANSTATUS - i64 *anExec; /* Number of times each op has been executed */ int nScan; /* Entries in aScan[] */ ScanStatus *aScan; /* Scan definitions for sqlite3_stmt_scanstatus() */ #endif }; /* -** The following are allowed values for Vdbe.magic +** The following are allowed values for Vdbe.eVdbeState */ -#define VDBE_MAGIC_INIT 0x16bceaa5 /* Building a VDBE program */ -#define VDBE_MAGIC_RUN 0x2df20da3 /* VDBE is ready to execute */ -#define VDBE_MAGIC_HALT 0x319c2973 /* VDBE has completed execution */ -#define VDBE_MAGIC_RESET 0x48fa9f76 /* Reset and ready to run again */ -#define VDBE_MAGIC_DEAD 0x5606c3c8 /* The VDBE has been deallocated */ +#define VDBE_INIT_STATE 0 /* Prepared statement under construction */ +#define VDBE_READY_STATE 1 /* Ready to run but not yet started */ +#define VDBE_RUN_STATE 2 /* Run in progress */ +#define VDBE_HALT_STATE 3 /* Finished. Need reset() or finalize() */ /* -** Structure used to store the context required by the +** Structure used to store the context required by the ** sqlite3_preupdate_*() API functions. */ struct PreUpdate { @@ -19791,36 +23193,74 @@ struct PreUpdate { UnpackedRecord *pUnpacked; /* Unpacked version of aRecord[] */ UnpackedRecord *pNewUnpacked; /* Unpacked version of new.* record */ int iNewReg; /* Register for new.* values */ + int iBlobWrite; /* Value returned by preupdate_blobwrite() */ i64 iKey1; /* First key value passed to hook */ i64 iKey2; /* Second key value passed to hook */ Mem *aNew; /* Array of new.* values */ - Table *pTab; /* Schema object being upated */ + Table *pTab; /* Schema object being updated */ Index *pPk; /* PK index if pTab is WITHOUT ROWID */ }; +/* +** An instance of this object is used to pass an vector of values into +** OP_VFilter, the xFilter method of a virtual table. The vector is the +** set of values on the right-hand side of an IN constraint. +** +** The value as passed into xFilter is an sqlite3_value with a "pointer" +** type, such as is generated by sqlite3_result_pointer() and read by +** sqlite3_value_pointer. Such values have MEM_Term|MEM_Subtype|MEM_Null +** and a subtype of 'p'. The sqlite3_vtab_in_first() and _next() interfaces +** know how to use this object to step through all the values in the +** right operand of the IN constraint. +*/ +typedef struct ValueList ValueList; +struct ValueList { + BtCursor *pCsr; /* An ephemeral table holding all values */ + sqlite3_value *pOut; /* Register to hold each decoded output value */ +}; + +/* Size of content associated with serial types that fit into a +** single-byte varint. +*/ +#ifndef SQLITE_AMALGAMATION +SQLITE_PRIVATE const u8 sqlite3SmallTypeSizes[]; +#endif + /* ** Function prototypes */ SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...); SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*); +SQLITE_PRIVATE void sqlite3VdbeFreeCursorNN(Vdbe*,VdbeCursor*); void sqliteVdbePopStack(Vdbe*,int); -SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*); +SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeHandleMovedCursor(VdbeCursor *p); +SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor*); SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*); -#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) -SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, Op*); -#endif SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32); SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8); -SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int, u32*); -SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32); -SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); +#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT +SQLITE_PRIVATE u64 sqlite3FloatSwap(u64 in); +# define swapMixedEndianFloat(X) X = sqlite3FloatSwap(X) +#else +# define swapMixedEndianFloat(X) +#endif +SQLITE_PRIVATE void sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int); int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*); SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*); SQLITE_PRIVATE int sqlite3VdbeExec(Vdbe*); +#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB) +SQLITE_PRIVATE int sqlite3VdbeNextOpcode(Vdbe*,Mem*,int,int*,int*,Op**); +SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3*,Op*); +#endif +#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) +SQLITE_PRIVATE char *sqlite3VdbeDisplayComment(sqlite3*,const Op*,const char*); +#endif +#if !defined(SQLITE_OMIT_EXPLAIN) SQLITE_PRIVATE int sqlite3VdbeList(Vdbe*); +#endif SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *, int); SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem*); @@ -19828,7 +23268,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemCopy(Mem*, const Mem*); SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem*, const Mem*, int); SQLITE_PRIVATE void sqlite3VdbeMemMove(Mem*, Mem*); SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem*); -SQLITE_PRIVATE int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*)); +SQLITE_PRIVATE int sqlite3VdbeMemSetStr(Mem*, const char*, i64, u8, void(*)(void*)); SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem*, i64); #ifdef SQLITE_OMIT_FLOATING_POINT # define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64 @@ -19838,29 +23278,50 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetDouble(Mem*, double); SQLITE_PRIVATE void sqlite3VdbeMemSetPointer(Mem*, void*, const char*, void(*)(void*)); SQLITE_PRIVATE void sqlite3VdbeMemInit(Mem*,sqlite3*,u16); SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem*); +#ifndef SQLITE_OMIT_INCRBLOB SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem*,int); -SQLITE_PRIVATE void sqlite3VdbeMemSetRowSet(Mem*); +#else +SQLITE_PRIVATE int sqlite3VdbeMemSetZeroBlob(Mem*,int); +#endif +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3VdbeMemIsRowSet(const Mem*); +#endif +SQLITE_PRIVATE int sqlite3VdbeMemSetRowSet(Mem*); +SQLITE_PRIVATE void sqlite3VdbeMemZeroTerminateIfAble(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, u8, u8); -SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*); +SQLITE_PRIVATE int sqlite3IntFloatCompare(i64,double); +SQLITE_PRIVATE i64 sqlite3VdbeIntValue(const Mem*); SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem*); SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*); SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem*, int ifNull); SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*); -SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem*,u8,u8); +SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem*,u8,u8); SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*); +SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset(BtCursor*,u32,Mem*); SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p); +SQLITE_PRIVATE void sqlite3VdbeMemReleaseMalloc(Mem*p); SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*); +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE int sqlite3VdbeMemAggValue(Mem*, Mem*, FuncDef*); +#endif +#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB) SQLITE_PRIVATE const char *sqlite3OpcodeName(int); +#endif SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve); SQLITE_PRIVATE int sqlite3VdbeMemClearAndResize(Mem *pMem, int n); SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *, int); -SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3VdbeFrameIsValid(VdbeFrame*); +#endif +SQLITE_PRIVATE void sqlite3VdbeFrameMemDel(void*); /* Destructor on Mem */ +SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*); /* Actually deletes the Frame */ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *); #ifdef SQLITE_ENABLE_PREUPDATE_HOOK -SQLITE_PRIVATE void sqlite3VdbePreUpdateHook(Vdbe*,VdbeCursor*,int,const char*,Table*,i64,int); +SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( + Vdbe*,VdbeCursor*,int,const char*,Table*,i64,int,int); #endif SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p); @@ -19873,6 +23334,8 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *, int *); SQLITE_PRIVATE int sqlite3VdbeSorterWrite(const VdbeCursor *, Mem *); SQLITE_PRIVATE int sqlite3VdbeSorterCompare(const VdbeCursor *, Mem *, int, int *); +SQLITE_PRIVATE void sqlite3VdbeValueListFree(void*); + #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3VdbeIncrWriteCounter(Vdbe*, VdbeCursor*); SQLITE_PRIVATE void sqlite3VdbeAssertAbortable(Vdbe*); @@ -19881,7 +23344,7 @@ SQLITE_PRIVATE void sqlite3VdbeAssertAbortable(Vdbe*); # define sqlite3VdbeAssertAbortable(V) #endif -#if !defined(SQLITE_OMIT_SHARED_CACHE) +#if !defined(SQLITE_OMIT_SHARED_CACHE) SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe*); #else # define sqlite3VdbeEnter(X) @@ -19906,7 +23369,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *, int); #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf); +SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr); #endif #ifndef SQLITE_OMIT_UTF16 SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem*, u8); @@ -20098,6 +23561,10 @@ static u32 countLookasideSlots(LookasideSlot *p){ SQLITE_PRIVATE int sqlite3LookasideUsed(sqlite3 *db, int *pHighwater){ u32 nInit = countLookasideSlots(db->lookaside.pInit); u32 nFree = countLookasideSlots(db->lookaside.pFree); +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + nInit += countLookasideSlots(db->lookaside.pSmallInit); + nFree += countLookasideSlots(db->lookaside.pSmallFree); +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ if( pHighwater ) *pHighwater = db->lookaside.nSlot - nInit; return db->lookaside.nSlot - (nInit+nFree); } @@ -20130,6 +23597,15 @@ SQLITE_API int sqlite3_db_status( db->lookaside.pInit = db->lookaside.pFree; db->lookaside.pFree = 0; } +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + p = db->lookaside.pSmallFree; + if( p ){ + while( p->pNext ) p = p->pNext; + p->pNext = db->lookaside.pSmallInit; + db->lookaside.pSmallInit = db->lookaside.pSmallFree; + db->lookaside.pSmallFree = 0; + } +#endif } break; } @@ -20150,7 +23626,7 @@ SQLITE_API int sqlite3_db_status( break; } - /* + /* ** Return an approximation for the amount of memory currently used ** by all pagers associated with the given database connection. The ** highwater mark is meaningless and is returned as zero. @@ -20188,13 +23664,15 @@ SQLITE_API int sqlite3_db_status( sqlite3BtreeEnterAll(db); db->pnBytesFreed = &nByte; + assert( db->lookaside.pEnd==db->lookaside.pTrueEnd ); + db->lookaside.pEnd = db->lookaside.pStart; for(i=0; inDb; i++){ Schema *pSchema = db->aDb[i].pSchema; if( ALWAYS(pSchema!=0) ){ HashElem *p; nByte += sqlite3GlobalConfig.m.xRoundup(sizeof(HashElem)) * ( - pSchema->tblHash.count + pSchema->tblHash.count + pSchema->trigHash.count + pSchema->idxHash.count + pSchema->fkeyHash.count @@ -20213,6 +23691,7 @@ SQLITE_API int sqlite3_db_status( } } db->pnBytesFreed = 0; + db->lookaside.pEnd = db->lookaside.pTrueEnd; sqlite3BtreeLeaveAll(db); *pHighwater = 0; @@ -20230,10 +23709,12 @@ SQLITE_API int sqlite3_db_status( int nByte = 0; /* Used to accumulate return value */ db->pnBytesFreed = &nByte; - for(pVdbe=db->pVdbe; pVdbe; pVdbe=pVdbe->pNext){ - sqlite3VdbeClearObject(db, pVdbe); - sqlite3DbFree(db, pVdbe); + assert( db->lookaside.pEnd==db->lookaside.pTrueEnd ); + db->lookaside.pEnd = db->lookaside.pStart; + for(pVdbe=db->pVdbe; pVdbe; pVdbe=pVdbe->pVNext){ + sqlite3VdbeDelete(pVdbe); } + db->lookaside.pEnd = db->lookaside.pTrueEnd; db->pnBytesFreed = 0; *pHighwater = 0; /* IMP: R-64479-57858 */ @@ -20244,12 +23725,12 @@ SQLITE_API int sqlite3_db_status( /* ** Set *pCurrent to the total cache hits or misses encountered by all - ** pagers the database handle is connected to. *pHighwater is always set + ** pagers the database handle is connected to. *pHighwater is always set ** to zero. */ case SQLITE_DBSTATUS_CACHE_SPILL: op = SQLITE_DBSTATUS_CACHE_WRITE+1; - /* Fall through into the next case */ + /* no break */ deliberate_fall_through case SQLITE_DBSTATUS_CACHE_HIT: case SQLITE_DBSTATUS_CACHE_MISS: case SQLITE_DBSTATUS_CACHE_WRITE:{ @@ -20303,7 +23784,7 @@ SQLITE_API int sqlite3_db_status( ** ************************************************************************* ** This file contains the C functions that implement date and time -** functions for SQLite. +** functions for SQLite. ** ** There is only one exported symbol in this file - the function ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file. @@ -20312,7 +23793,7 @@ SQLITE_API int sqlite3_db_status( ** SQLite processes all times and dates as julian day numbers. The ** dates and times are stored as the number of days since noon ** in Greenwich on November 24, 4714 B.C. according to the Gregorian -** calendar system. +** calendar system. ** ** 1970-01-01 00:00:00 is JD 2440587.5 ** 2000-01-01 00:00:00 is JD 2451544.5 @@ -20370,6 +23851,7 @@ struct DateTime { char validTZ; /* True (1) if tz is valid */ char tzSet; /* Timezone was set explicitly */ char isError; /* An overflow has occurred */ + char useSubsec; /* Display subsecond precision */ }; @@ -20402,8 +23884,8 @@ struct DateTime { */ static int getDigits(const char *zDate, const char *zFormat, ...){ /* The aMx[] array translates the 3rd character of each format - ** spec into a max size: a b c d e f */ - static const u16 aMx[] = { 12, 14, 24, 31, 59, 9999 }; + ** spec into a max size: a b c d e f */ + static const u16 aMx[] = { 12, 14, 24, 31, 59, 14712 }; va_list ap; int cnt = 0; char nextC; @@ -20569,7 +24051,7 @@ static void computeJD(DateTime *p){ p->iJD = (sqlite3_int64)((X1 + X2 + D + B - 1524.5 ) * 86400000); p->validJD = 1; if( p->validHMS ){ - p->iJD += p->h*3600000 + p->m*60000 + (sqlite3_int64)(p->s*1000); + p->iJD += p->h*3600000 + p->m*60000 + (sqlite3_int64)(p->s*1000 + 0.5); if( p->validTZ ){ p->iJD -= p->tz*60000; p->validYMD = 0; @@ -20660,7 +24142,7 @@ static void setRawDateNumber(DateTime *p, double r){ ** The following are acceptable forms for the input string: ** ** YYYY-MM-DD HH:MM:SS.FFF +/-HH:MM -** DDDD.DD +** DDDD.DD ** now ** ** In the first form, the +/-HH:MM is always optional. The fractional @@ -20670,8 +24152,8 @@ static void setRawDateNumber(DateTime *p, double r){ ** as there is a year and date. */ static int parseDateOrTime( - sqlite3_context *context, - const char *zDate, + sqlite3_context *context, + const char *zDate, DateTime *p ){ double r; @@ -20681,9 +24163,14 @@ static int parseDateOrTime( return 0; }else if( sqlite3StrICmp(zDate,"now")==0 && sqlite3NotPureFunc(context) ){ return setDateTimeToCurrent(context, p); - }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){ + }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8)>0 ){ setRawDateNumber(p, r); return 0; + }else if( (sqlite3StrICmp(zDate,"subsec")==0 + || sqlite3StrICmp(zDate,"subsecond")==0) + && sqlite3NotPureFunc(context) ){ + p->useSubsec = 1; + return setDateTimeToCurrent(context, p); } return 1; } @@ -20692,7 +24179,7 @@ static int parseDateOrTime( ** Multiplying this by 86400000 gives 464269060799999 as the maximum value ** for DateTime.iJD. ** -** But some older compilers (ex: gcc 4.2.1 on older Macs) cannot deal with +** But some older compilers (ex: gcc 4.2.1 on older Macs) cannot deal with ** such a large integer literal, so we have to encode it. */ #define INT_464269060799999 ((((i64)0x1a640)<<32)|0x1072fdff) @@ -20739,17 +24226,14 @@ static void computeYMD(DateTime *p){ ** Compute the Hour, Minute, and Seconds from the julian day number. */ static void computeHMS(DateTime *p){ - int s; + int day_ms, day_min; /* milliseconds, minutes into the day */ if( p->validHMS ) return; computeJD(p); - s = (int)((p->iJD + 43200000) % 86400000); - p->s = s/1000.0; - s = (int)p->s; - p->s -= s; - p->h = s/3600; - s -= p->h*3600; - p->m = s/60; - p->s += s - p->m*60; + day_ms = (int)((p->iJD + 43200000) % 86400000); + p->s = (day_ms % 60000)/1000.0; + day_min = day_ms/60000; + p->m = day_min % 60; + p->h = day_min / 60; p->rawS = 0; p->validHMS = 1; } @@ -20774,14 +24258,14 @@ static void clearYMD_HMS_TZ(DateTime *p){ #ifndef SQLITE_OMIT_LOCALTIME /* ** On recent Windows platforms, the localtime_s() function is available -** as part of the "Secure CRT". It is essentially equivalent to -** localtime_r() available under most POSIX platforms, except that the +** as part of the "Secure CRT". It is essentially equivalent to +** localtime_r() available under most POSIX platforms, except that the ** order of the parameters is reversed. ** ** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx. ** ** If the user has not indicated to use localtime_r() or localtime_s() -** already, check for an MSVC build environment that provides +** already, check for an MSVC build environment that provides ** localtime_s(). */ #if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S \ @@ -20796,8 +24280,10 @@ static void clearYMD_HMS_TZ(DateTime *p){ ** is available. This routine returns 0 on success and ** non-zero on any kind of error. ** -** If the sqlite3GlobalConfig.bLocaltimeFault variable is true then this -** routine will always fail. +** If the sqlite3GlobalConfig.bLocaltimeFault variable is non-zero then this +** routine will always fail. If bLocaltimeFault is nonzero and +** sqlite3GlobalConfig.xAltLocaltime is not NULL, then xAltLocaltime() is +** invoked in place of the OS-defined localtime() function. ** ** EVIDENCE-OF: R-62172-00036 In this implementation, the standard C ** library function localtime_r() is used to assist in the calculation of @@ -20808,19 +24294,35 @@ static int osLocaltime(time_t *t, struct tm *pTm){ #if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S struct tm *pX; #if SQLITE_THREADSAFE>0 - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif sqlite3_mutex_enter(mutex); pX = localtime(t); #ifndef SQLITE_UNTESTABLE - if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0; + if( sqlite3GlobalConfig.bLocaltimeFault ){ + if( sqlite3GlobalConfig.xAltLocaltime!=0 + && 0==sqlite3GlobalConfig.xAltLocaltime((const void*)t,(void*)pTm) + ){ + pX = pTm; + }else{ + pX = 0; + } + } #endif if( pX ) *pTm = *pX; +#if SQLITE_THREADSAFE>0 sqlite3_mutex_leave(mutex); +#endif rc = pX==0; #else #ifndef SQLITE_UNTESTABLE - if( sqlite3GlobalConfig.bLocaltimeFault ) return 1; + if( sqlite3GlobalConfig.bLocaltimeFault ){ + if( sqlite3GlobalConfig.xAltLocaltime!=0 ){ + return sqlite3GlobalConfig.xAltLocaltime((const void*)t,(void*)pTm); + }else{ + return 1; + } + } #endif #if HAVE_LOCALTIME_R rc = localtime_r(t, pTm)==0; @@ -20835,67 +24337,56 @@ static int osLocaltime(time_t *t, struct tm *pTm){ #ifndef SQLITE_OMIT_LOCALTIME /* -** Compute the difference (in milliseconds) between localtime and UTC -** (a.k.a. GMT) for the time value p where p is in UTC. If no error occurs, -** return this value and set *pRc to SQLITE_OK. -** -** Or, if an error does occur, set *pRc to SQLITE_ERROR. The returned value -** is undefined in this case. +** Assuming the input DateTime is UTC, move it to its localtime equivalent. */ -static sqlite3_int64 localtimeOffset( - DateTime *p, /* Date at which to calculate offset */ - sqlite3_context *pCtx, /* Write error here if one occurs */ - int *pRc /* OUT: Error code. SQLITE_OK or ERROR */ +static int toLocaltime( + DateTime *p, /* Date at which to calculate offset */ + sqlite3_context *pCtx /* Write error here if one occurs */ ){ - DateTime x, y; time_t t; struct tm sLocal; + int iYearDiff; /* Initialize the contents of sLocal to avoid a compiler warning. */ memset(&sLocal, 0, sizeof(sLocal)); - x = *p; - computeYMD_HMS(&x); - if( x.Y<1971 || x.Y>=2038 ){ + computeJD(p); + if( p->iJD<2108667600*(i64)100000 /* 1970-01-01 */ + || p->iJD>2130141456*(i64)100000 /* 2038-01-18 */ + ){ /* EVIDENCE-OF: R-55269-29598 The localtime_r() C function normally only ** works for years between 1970 and 2037. For dates outside this range, ** SQLite attempts to map the year into an equivalent year within this ** range, do the calculation, then map the year back. */ - x.Y = 2000; - x.M = 1; - x.D = 1; - x.h = 0; - x.m = 0; - x.s = 0.0; - } else { - int s = (int)(x.s + 0.5); - x.s = s; + DateTime x = *p; + computeYMD_HMS(&x); + iYearDiff = (2000 + x.Y%4) - x.Y; + x.Y += iYearDiff; + x.validJD = 0; + computeJD(&x); + t = (time_t)(x.iJD/1000 - 21086676*(i64)10000); + }else{ + iYearDiff = 0; + t = (time_t)(p->iJD/1000 - 21086676*(i64)10000); } - x.tz = 0; - x.validJD = 0; - computeJD(&x); - t = (time_t)(x.iJD/1000 - 21086676*(i64)10000); if( osLocaltime(&t, &sLocal) ){ sqlite3_result_error(pCtx, "local time unavailable", -1); - *pRc = SQLITE_ERROR; - return 0; + return SQLITE_ERROR; } - y.Y = sLocal.tm_year + 1900; - y.M = sLocal.tm_mon + 1; - y.D = sLocal.tm_mday; - y.h = sLocal.tm_hour; - y.m = sLocal.tm_min; - y.s = sLocal.tm_sec; - y.validYMD = 1; - y.validHMS = 1; - y.validJD = 0; - y.rawS = 0; - y.validTZ = 0; - y.isError = 0; - computeJD(&y); - *pRc = SQLITE_OK; - return y.iJD - x.iJD; + p->Y = sLocal.tm_year + 1900 - iYearDiff; + p->M = sLocal.tm_mon + 1; + p->D = sLocal.tm_mday; + p->h = sLocal.tm_hour; + p->m = sLocal.tm_min; + p->s = sLocal.tm_sec + (p->iJD%1000)*0.001; + p->validYMD = 1; + p->validHMS = 1; + p->validJD = 0; + p->rawS = 0; + p->validTZ = 0; + p->isError = 0; + return SQLITE_OK; } #endif /* SQLITE_OMIT_LOCALTIME */ @@ -20908,20 +24399,38 @@ static sqlite3_int64 localtimeOffset( ** of several units of time. */ static const struct { - u8 eType; /* Transformation type code */ - u8 nName; /* Length of th name */ - char *zName; /* Name of the transformation */ - double rLimit; /* Maximum NNN value for this transform */ - double rXform; /* Constant used for this transform */ + u8 nName; /* Length of the name */ + char zName[7]; /* Name of the transformation */ + float rLimit; /* Maximum NNN value for this transform */ + float rXform; /* Constant used for this transform */ } aXformType[] = { - { 0, 6, "second", 464269060800.0, 86400000.0/(24.0*60.0*60.0) }, - { 0, 6, "minute", 7737817680.0, 86400000.0/(24.0*60.0) }, - { 0, 4, "hour", 128963628.0, 86400000.0/24.0 }, - { 0, 3, "day", 5373485.0, 86400000.0 }, - { 1, 5, "month", 176546.0, 30.0*86400000.0 }, - { 2, 4, "year", 14713.0, 365.0*86400000.0 }, + { 6, "second", 4.6427e+14, 1.0 }, + { 6, "minute", 7.7379e+12, 60.0 }, + { 4, "hour", 1.2897e+11, 3600.0 }, + { 3, "day", 5373485.0, 86400.0 }, + { 5, "month", 176546.0, 2592000.0 }, + { 4, "year", 14713.0, 31536000.0 }, }; +/* +** If the DateTime p is raw number, try to figure out if it is +** a julian day number of a unix timestamp. Set the p value +** appropriately. +*/ +static void autoAdjustDate(DateTime *p){ + if( !p->rawS || p->validJD ){ + p->rawS = 0; + }else if( p->s>=-21086676*(i64)10000 /* -4713-11-24 12:00:00 */ + && p->s<=(25340230*(i64)10000)+799 /* 9999-12-31 23:59:59 */ + ){ + double r = p->s*1000.0 + 210866760000000.0; + clearYMD_HMS_TZ(p); + p->iJD = (sqlite3_int64)(r + 0.5); + p->validJD = 1; + p->rawS = 0; + } +} + /* ** Process a modifier to a date-time stamp. The modifiers are ** as follows: @@ -20950,11 +24459,44 @@ static int parseModifier( sqlite3_context *pCtx, /* Function context */ const char *z, /* The text of the modifier */ int n, /* Length of zMod in bytes */ - DateTime *p /* The date/time value to be modified */ + DateTime *p, /* The date/time value to be modified */ + int idx /* Parameter index of the modifier */ ){ int rc = 1; double r; switch(sqlite3UpperToLower[(u8)z[0]] ){ + case 'a': { + /* + ** auto + ** + ** If rawS is available, then interpret as a julian day number, or + ** a unix timestamp, depending on its magnitude. + */ + if( sqlite3_stricmp(z, "auto")==0 ){ + if( idx>1 ) return 1; /* IMP: R-33611-57934 */ + autoAdjustDate(p); + rc = 0; + } + break; + } + case 'j': { + /* + ** julianday + ** + ** Always interpret the prior number as a julian-day value. If this + ** is not the first modifier, or if the prior argument is not a numeric + ** value in the allowed range of julian day numbers understood by + ** SQLite (0..5373484.5) then the result will be NULL. + */ + if( sqlite3_stricmp(z, "julianday")==0 ){ + if( idx>1 ) return 1; /* IMP: R-31176-64601 */ + if( p->validJD && p->rawS ){ + rc = 0; + p->rawS = 0; + } + } + break; + } #ifndef SQLITE_OMIT_LOCALTIME case 'l': { /* localtime @@ -20963,9 +24505,7 @@ static int parseModifier( ** show local time. */ if( sqlite3_stricmp(z, "localtime")==0 && sqlite3NotPureFunc(pCtx) ){ - computeJD(p); - p->iJD += localtimeOffset(p, pCtx, &rc); - clearYMD_HMS_TZ(p); + rc = toLocaltime(p, pCtx); } break; } @@ -20978,10 +24518,11 @@ static int parseModifier( ** seconds since 1970. Convert to a real julian day number. */ if( sqlite3_stricmp(z, "unixepoch")==0 && p->rawS ){ + if( idx>1 ) return 1; /* IMP: R-49255-55373 */ r = p->s*1000.0 + 210866760000000.0; if( r>=0.0 && r<464269060800000.0 ){ clearYMD_HMS_TZ(p); - p->iJD = (sqlite3_int64)r; + p->iJD = (sqlite3_int64)(r + 0.5); p->validJD = 1; p->rawS = 0; rc = 0; @@ -20990,18 +24531,31 @@ static int parseModifier( #ifndef SQLITE_OMIT_LOCALTIME else if( sqlite3_stricmp(z, "utc")==0 && sqlite3NotPureFunc(pCtx) ){ if( p->tzSet==0 ){ - sqlite3_int64 c1; + i64 iOrigJD; /* Original localtime */ + i64 iGuess; /* Guess at the corresponding utc time */ + int cnt = 0; /* Safety to prevent infinite loop */ + i64 iErr; /* Guess is off by this much */ + computeJD(p); - c1 = localtimeOffset(p, pCtx, &rc); - if( rc==SQLITE_OK ){ - p->iJD -= c1; - clearYMD_HMS_TZ(p); - p->iJD += c1 - localtimeOffset(p, pCtx, &rc); - } + iGuess = iOrigJD = p->iJD; + iErr = 0; + do{ + DateTime new; + memset(&new, 0, sizeof(new)); + iGuess -= iErr; + new.iJD = iGuess; + new.validJD = 1; + rc = toLocaltime(&new, pCtx); + if( rc ) return rc; + computeJD(&new); + iErr = new.iJD - iOrigJD; + }while( iErr && cnt++<3 ); + memset(p, 0, sizeof(*p)); + p->iJD = iGuess; + p->validJD = 1; p->tzSet = 1; - }else{ - rc = SQLITE_OK; } + rc = SQLITE_OK; } #endif break; @@ -21015,8 +24569,8 @@ static int parseModifier( ** date is already on the appropriate weekday, this is a no-op. */ if( sqlite3_strnicmp(z, "weekday ", 8)==0 - && sqlite3AtoF(&z[8], &r, sqlite3Strlen30(&z[8]), SQLITE_UTF8) - && (n=(int)r)==r && n>=0 && r<7 ){ + && sqlite3AtoF(&z[8], &r, sqlite3Strlen30(&z[8]), SQLITE_UTF8)>0 + && r>=0.0 && r<7.0 && (n=(int)r)==r ){ sqlite3_int64 Z; computeYMD_HMS(p); p->validTZ = 0; @@ -21036,8 +24590,22 @@ static int parseModifier( ** ** Move the date backwards to the beginning of the current day, ** or month or year. + ** + ** subsecond + ** subsec + ** + ** Show subsecond precision in the output of datetime() and + ** unixepoch() and strftime('%s'). */ - if( sqlite3_strnicmp(z, "start of ", 9)!=0 ) break; + if( sqlite3_strnicmp(z, "start of ", 9)!=0 ){ + if( sqlite3_stricmp(z, "subsec")==0 + || sqlite3_stricmp(z, "subsecond")==0 + ){ + p->useSubsec = 1; + rc = 0; + } + break; + } if( !p->validJD && !p->validYMD && !p->validHMS ) break; z += 9; computeYMD(p); @@ -21073,18 +24641,73 @@ static int parseModifier( case '9': { double rRounder; int i; - for(n=1; z[n] && z[n]!=':' && !sqlite3Isspace(z[n]); n++){} - if( !sqlite3AtoF(z, &r, n, SQLITE_UTF8) ){ - rc = 1; + int Y,M,D,h,m,x; + const char *z2 = z; + char z0 = z[0]; + for(n=1; z[n]; n++){ + if( z[n]==':' ) break; + if( sqlite3Isspace(z[n]) ) break; + if( z[n]=='-' ){ + if( n==5 && getDigits(&z[1], "40f", &Y)==1 ) break; + if( n==6 && getDigits(&z[1], "50f", &Y)==1 ) break; + } + } + if( sqlite3AtoF(z, &r, n, SQLITE_UTF8)<=0 ){ + assert( rc==1 ); break; } - if( z[n]==':' ){ + if( z[n]=='-' ){ + /* A modifier of the form (+|-)YYYY-MM-DD adds or subtracts the + ** specified number of years, months, and days. MM is limited to + ** the range 0-11 and DD is limited to 0-30. + */ + if( z0!='+' && z0!='-' ) break; /* Must start with +/- */ + if( n==5 ){ + if( getDigits(&z[1], "40f-20a-20d", &Y, &M, &D)!=3 ) break; + }else{ + assert( n==6 ); + if( getDigits(&z[1], "50f-20a-20d", &Y, &M, &D)!=3 ) break; + z++; + } + if( M>=12 ) break; /* M range 0..11 */ + if( D>=31 ) break; /* D range 0..30 */ + computeYMD_HMS(p); + p->validJD = 0; + if( z0=='-' ){ + p->Y -= Y; + p->M -= M; + D = -D; + }else{ + p->Y += Y; + p->M += M; + } + x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12; + p->Y += x; + p->M -= x*12; + computeJD(p); + p->validHMS = 0; + p->validYMD = 0; + p->iJD += (i64)D*86400000; + if( z[11]==0 ){ + rc = 0; + break; + } + if( sqlite3Isspace(z[11]) + && getDigits(&z[12], "20c:20e", &h, &m)==2 + ){ + z2 = &z[12]; + n = 2; + }else{ + break; + } + } + if( z2[n]==':' ){ /* A modifier of the form (+|-)HH:MM:SS.FFF adds (or subtracts) the ** specified number of hours, minutes, seconds, and fractional seconds ** to the time. The ".FFF" may be omitted. The ":SS.FFF" may be ** omitted. */ - const char *z2 = z; + DateTime tx; sqlite3_int64 day; if( !sqlite3Isdigit(*z2) ) z2++; @@ -21094,7 +24717,7 @@ static int parseModifier( tx.iJD -= 43200000; day = tx.iJD/86400000; tx.iJD -= day*86400000; - if( z[0]=='-' ) tx.iJD = -tx.iJD; + if( z0=='-' ) tx.iJD = -tx.iJD; computeJD(p); clearYMD_HMS_TZ(p); p->iJD += tx.iJD; @@ -21110,16 +24733,16 @@ static int parseModifier( if( n>10 || n<3 ) break; if( sqlite3UpperToLower[(u8)z[n-1]]=='s' ) n--; computeJD(p); - rc = 1; + assert( rc==1 ); rRounder = r<0 ? -0.5 : +0.5; for(i=0; i-aXformType[i].rLimit && rM += (int)r; x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12; @@ -21129,8 +24752,9 @@ static int parseModifier( r -= (int)r; break; } - case 2: { /* Special processing to add years */ + case 5: { /* Special processing to add years */ int y = (int)r; + assert( strcmp(aXformType[i].zName,"year")==0 ); computeYMD_HMS(p); p->Y += y; p->validJD = 0; @@ -21139,7 +24763,7 @@ static int parseModifier( } } computeJD(p); - p->iJD += (sqlite3_int64)(r*aXformType[i].rXform + rRounder); + p->iJD += (sqlite3_int64)(r*1000.0*aXformType[i].rXform + rRounder); rc = 0; break; } @@ -21164,9 +24788,9 @@ static int parseModifier( ** then assume a default value of "now" for argv[0]. */ static int isDate( - sqlite3_context *context, - int argc, - sqlite3_value **argv, + sqlite3_context *context, + int argc, + sqlite3_value **argv, DateTime *p ){ int i, n; @@ -21174,6 +24798,7 @@ static int isDate( int eType; memset(p, 0, sizeof(*p)); if( argc==0 ){ + if( !sqlite3NotPureFunc(context) ) return 1; return setDateTimeToCurrent(context, p); } if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT @@ -21188,7 +24813,7 @@ static int isDate( for(i=1; iisError || !validJulianDay(p->iJD) ) return 1; @@ -21218,6 +24843,28 @@ static void juliandayFunc( } } +/* +** unixepoch( TIMESTRING, MOD, MOD, ...) +** +** Return the number of seconds (including fractional seconds) since +** the unix epoch of 1970-01-01 00:00:00 GMT. +*/ +static void unixepochFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + DateTime x; + if( isDate(context, argc, argv, &x)==0 ){ + computeJD(&x); + if( x.useSubsec ){ + sqlite3_result_double(context, (x.iJD - 21086676*(i64)10000000)/1000.0); + }else{ + sqlite3_result_int64(context, x.iJD/1000 - 21086676*(i64)10000); + } + } +} + /* ** datetime( TIMESTRING, MOD, MOD, ...) ** @@ -21230,11 +24877,51 @@ static void datetimeFunc( ){ DateTime x; if( isDate(context, argc, argv, &x)==0 ){ - char zBuf[100]; + int Y, s, n; + char zBuf[32]; computeYMD_HMS(&x); - sqlite3_snprintf(sizeof(zBuf), zBuf, "%04d-%02d-%02d %02d:%02d:%02d", - x.Y, x.M, x.D, x.h, x.m, (int)(x.s)); - sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); + Y = x.Y; + if( Y<0 ) Y = -Y; + zBuf[1] = '0' + (Y/1000)%10; + zBuf[2] = '0' + (Y/100)%10; + zBuf[3] = '0' + (Y/10)%10; + zBuf[4] = '0' + (Y)%10; + zBuf[5] = '-'; + zBuf[6] = '0' + (x.M/10)%10; + zBuf[7] = '0' + (x.M)%10; + zBuf[8] = '-'; + zBuf[9] = '0' + (x.D/10)%10; + zBuf[10] = '0' + (x.D)%10; + zBuf[11] = ' '; + zBuf[12] = '0' + (x.h/10)%10; + zBuf[13] = '0' + (x.h)%10; + zBuf[14] = ':'; + zBuf[15] = '0' + (x.m/10)%10; + zBuf[16] = '0' + (x.m)%10; + zBuf[17] = ':'; + if( x.useSubsec ){ + s = (int)(1000.0*x.s + 0.5); + zBuf[18] = '0' + (s/10000)%10; + zBuf[19] = '0' + (s/1000)%10; + zBuf[20] = '.'; + zBuf[21] = '0' + (s/100)%10; + zBuf[22] = '0' + (s/10)%10; + zBuf[23] = '0' + (s)%10; + zBuf[24] = 0; + n = 24; + }else{ + s = (int)x.s; + zBuf[18] = '0' + (s/10)%10; + zBuf[19] = '0' + (s)%10; + zBuf[20] = 0; + n = 20; + } + if( x.Y<0 ){ + zBuf[0] = '-'; + sqlite3_result_text(context, zBuf, n, SQLITE_TRANSIENT); + }else{ + sqlite3_result_text(context, &zBuf[1], n-1, SQLITE_TRANSIENT); + } } } @@ -21250,10 +24937,33 @@ static void timeFunc( ){ DateTime x; if( isDate(context, argc, argv, &x)==0 ){ - char zBuf[100]; + int s, n; + char zBuf[16]; computeHMS(&x); - sqlite3_snprintf(sizeof(zBuf), zBuf, "%02d:%02d:%02d", x.h, x.m, (int)x.s); - sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); + zBuf[0] = '0' + (x.h/10)%10; + zBuf[1] = '0' + (x.h)%10; + zBuf[2] = ':'; + zBuf[3] = '0' + (x.m/10)%10; + zBuf[4] = '0' + (x.m)%10; + zBuf[5] = ':'; + if( x.useSubsec ){ + s = (int)(1000.0*x.s + 0.5); + zBuf[6] = '0' + (s/10000)%10; + zBuf[7] = '0' + (s/1000)%10; + zBuf[8] = '.'; + zBuf[9] = '0' + (s/100)%10; + zBuf[10] = '0' + (s/10)%10; + zBuf[11] = '0' + (s)%10; + zBuf[12] = 0; + n = 12; + }else{ + s = (int)x.s; + zBuf[6] = '0' + (s/10)%10; + zBuf[7] = '0' + (s)%10; + zBuf[8] = 0; + n = 8; + } + sqlite3_result_text(context, zBuf, n, SQLITE_TRANSIENT); } } @@ -21269,10 +24979,28 @@ static void dateFunc( ){ DateTime x; if( isDate(context, argc, argv, &x)==0 ){ - char zBuf[100]; + int Y; + char zBuf[16]; computeYMD(&x); - sqlite3_snprintf(sizeof(zBuf), zBuf, "%04d-%02d-%02d", x.Y, x.M, x.D); - sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); + Y = x.Y; + if( Y<0 ) Y = -Y; + zBuf[1] = '0' + (Y/1000)%10; + zBuf[2] = '0' + (Y/100)%10; + zBuf[3] = '0' + (Y/10)%10; + zBuf[4] = '0' + (Y)%10; + zBuf[5] = '-'; + zBuf[6] = '0' + (x.M/10)%10; + zBuf[7] = '0' + (x.M)%10; + zBuf[8] = '-'; + zBuf[9] = '0' + (x.D/10)%10; + zBuf[10] = '0' + (x.D)%10; + zBuf[11] = 0; + if( x.Y<0 ){ + zBuf[0] = '-'; + sqlite3_result_text(context, zBuf, 11, SQLITE_TRANSIENT); + }else{ + sqlite3_result_text(context, &zBuf[1], 10, SQLITE_TRANSIENT); + } } } @@ -21290,7 +25018,7 @@ static void dateFunc( ** %M minute 00-59 ** %s seconds since 1970-01-01 ** %S seconds 00-59 -** %w day of week 0-6 sunday==0 +** %w day of week 0-6 Sunday==0 ** %W week of year 00-53 ** %Y year 0000-9999 ** %% % @@ -21301,131 +25029,105 @@ static void strftimeFunc( sqlite3_value **argv ){ DateTime x; - u64 n; size_t i,j; - char *z; sqlite3 *db; const char *zFmt; - char zBuf[100]; + sqlite3_str sRes; + + if( argc==0 ) return; zFmt = (const char*)sqlite3_value_text(argv[0]); if( zFmt==0 || isDate(context, argc-1, argv+1, &x) ) return; db = sqlite3_context_db_handle(context); - for(i=0, n=1; zFmt[i]; i++, n++){ - if( zFmt[i]=='%' ){ - switch( zFmt[i+1] ){ - case 'd': - case 'H': - case 'm': - case 'M': - case 'S': - case 'W': - n++; - /* fall thru */ - case 'w': - case '%': - break; - case 'f': - n += 8; - break; - case 'j': - n += 3; - break; - case 'Y': - n += 8; - break; - case 's': - case 'J': - n += 50; - break; - default: - return; /* ERROR. return a NULL */ - } - i++; - } - } - testcase( n==sizeof(zBuf)-1 ); - testcase( n==sizeof(zBuf) ); - testcase( n==(u64)db->aLimit[SQLITE_LIMIT_LENGTH]+1 ); - testcase( n==(u64)db->aLimit[SQLITE_LIMIT_LENGTH] ); - if( n(u64)db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - return; - }else{ - z = sqlite3DbMallocRawNN(db, (int)n); - if( z==0 ){ - sqlite3_result_error_nomem(context); - return; - } - } + sqlite3StrAccumInit(&sRes, 0, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]); + computeJD(&x); computeYMD_HMS(&x); for(i=j=0; zFmt[i]; i++){ - if( zFmt[i]!='%' ){ - z[j++] = zFmt[i]; - }else{ - i++; - switch( zFmt[i] ){ - case 'd': sqlite3_snprintf(3, &z[j],"%02d",x.D); j+=2; break; - case 'f': { - double s = x.s; - if( s>59.999 ) s = 59.999; - sqlite3_snprintf(7, &z[j],"%06.3f", s); - j += sqlite3Strlen30(&z[j]); - break; + if( zFmt[i]!='%' ) continue; + if( j59.999 ) s = 59.999; + sqlite3_str_appendf(&sRes, "%06.3f", s); + break; + } + case 'H': { + sqlite3_str_appendf(&sRes, "%02d", x.h); + break; + } + case 'W': /* Fall thru */ + case 'j': { + int nDay; /* Number of days since 1st day of year */ + DateTime y = x; + y.validJD = 0; + y.M = 1; + y.D = 1; + computeJD(&y); + nDay = (int)((x.iJD-y.iJD+43200000)/86400000); + if( zFmt[i]=='W' ){ + int wd; /* 0=Monday, 1=Tuesday, ... 6=Sunday */ + wd = (int)(((x.iJD+43200000)/86400000)%7); + sqlite3_str_appendf(&sRes,"%02d",(nDay+7-wd)/7); + }else{ + sqlite3_str_appendf(&sRes,"%03d",nDay+1); } - case 'H': sqlite3_snprintf(3, &z[j],"%02d",x.h); j+=2; break; - case 'W': /* Fall thru */ - case 'j': { - int nDay; /* Number of days since 1st day of year */ - DateTime y = x; - y.validJD = 0; - y.M = 1; - y.D = 1; - computeJD(&y); - nDay = (int)((x.iJD-y.iJD+43200000)/86400000); - if( zFmt[i]=='W' ){ - int wd; /* 0=Monday, 1=Tuesday, ... 6=Sunday */ - wd = (int)(((x.iJD+43200000)/86400000)%7); - sqlite3_snprintf(3, &z[j],"%02d",(nDay+7-wd)/7); - j += 2; - }else{ - sqlite3_snprintf(4, &z[j],"%03d",nDay+1); - j += 3; - } - break; + break; + } + case 'J': { + sqlite3_str_appendf(&sRes,"%.16g",x.iJD/86400000.0); + break; + } + case 'm': { + sqlite3_str_appendf(&sRes,"%02d",x.M); + break; + } + case 'M': { + sqlite3_str_appendf(&sRes,"%02d",x.m); + break; + } + case 's': { + if( x.useSubsec ){ + sqlite3_str_appendf(&sRes,"%.3f", + (x.iJD - 21086676*(i64)10000000)/1000.0); + }else{ + i64 iS = (i64)(x.iJD/1000 - 21086676*(i64)10000); + sqlite3_str_appendf(&sRes,"%lld",iS); } - case 'J': { - sqlite3_snprintf(20, &z[j],"%.16g",x.iJD/86400000.0); - j+=sqlite3Strlen30(&z[j]); - break; - } - case 'm': sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break; - case 'M': sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break; - case 's': { - sqlite3_snprintf(30,&z[j],"%lld", - (i64)(x.iJD/1000 - 21086676*(i64)10000)); - j += sqlite3Strlen30(&z[j]); - break; - } - case 'S': sqlite3_snprintf(3,&z[j],"%02d",(int)x.s); j+=2; break; - case 'w': { - z[j++] = (char)(((x.iJD+129600000)/86400000) % 7) + '0'; - break; - } - case 'Y': { - sqlite3_snprintf(5,&z[j],"%04d",x.Y); j+=sqlite3Strlen30(&z[j]); - break; - } - default: z[j++] = '%'; break; + break; + } + case 'S': { + sqlite3_str_appendf(&sRes,"%02d",(int)x.s); + break; + } + case 'w': { + sqlite3_str_appendchar(&sRes, 1, + (char)(((x.iJD+129600000)/86400000) % 7) + '0'); + break; + } + case 'Y': { + sqlite3_str_appendf(&sRes,"%04d",x.Y); + break; + } + case '%': { + sqlite3_str_appendchar(&sRes, 1, '%'); + break; + } + default: { + sqlite3_str_reset(&sRes); + return; } } } - z[j] = 0; - sqlite3_result_text(context, z, -1, - z==zBuf ? SQLITE_TRANSIENT : SQLITE_DYNAMIC); + if( j=d2.iJD ){ + sign = '+'; + Y = d1.Y - d2.Y; + if( Y ){ + d2.Y = d1.Y; + d2.validJD = 0; + computeJD(&d2); + } + M = d1.M - d2.M; + if( M<0 ){ + Y--; + M += 12; + } + if( M!=0 ){ + d2.M = d1.M; + d2.validJD = 0; + computeJD(&d2); + } + while( d1.iJDd2.iJD ){ + M--; + if( M<0 ){ + M = 11; + Y--; + } + d2.M++; + if( d2.M>12 ){ + d2.M = 1; + d2.Y++; + } + d2.validJD = 0; + computeJD(&d2); + } + d1.iJD = d2.iJD - d1.iJD; + d1.iJD += (u64)1486995408 * (u64)100000; + } + d1.validYMD = 0; + d1.validHMS = 0; + d1.validTZ = 0; + computeYMD_HMS(&d1); + sqlite3StrAccumInit(&sRes, 0, 0, 0, 100); + sqlite3_str_appendf(&sRes, "%c%04d-%02d-%02d %02d:%02d:%06.3f", + sign, Y, M, d1.D-1, d1.h, d1.m, d1.s); + sqlite3ResultStrAccum(context, &sRes); +} + + /* ** current_timestamp() ** @@ -21504,10 +25317,10 @@ static void currentTimeFunc( #if HAVE_GMTIME_R pTm = gmtime_r(&t, &sNow); #else - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)); pTm = gmtime(&t); if( pTm ) memcpy(&sNow, pTm, sizeof(sNow)); - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)); #endif if( pTm ){ strftime(zBuf, 20, zFormat, &sNow); @@ -21525,10 +25338,12 @@ SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void){ static FuncDef aDateTimeFuncs[] = { #ifndef SQLITE_OMIT_DATETIME_FUNCS PURE_DATE(julianday, -1, 0, 0, juliandayFunc ), + PURE_DATE(unixepoch, -1, 0, 0, unixepochFunc ), PURE_DATE(date, -1, 0, 0, dateFunc ), PURE_DATE(time, -1, 0, 0, timeFunc ), PURE_DATE(datetime, -1, 0, 0, datetimeFunc ), PURE_DATE(strftime, -1, 0, 0, strftimeFunc ), + PURE_DATE(timediff, 2, 0, 0, timediffFunc ), DFUNCTION(current_time, 0, 0, 0, ctimeFunc ), DFUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), DFUNCTION(current_date, 0, 0, 0, cdateFunc ), @@ -21651,9 +25466,11 @@ SQLITE_PRIVATE int sqlite3OsFileSize(sqlite3_file *id, i64 *pSize){ } SQLITE_PRIVATE int sqlite3OsLock(sqlite3_file *id, int lockType){ DO_OS_MALLOC_TEST(id); + assert( lockType>=SQLITE_LOCK_SHARED && lockType<=SQLITE_LOCK_EXCLUSIVE ); return id->pMethods->xLock(id, lockType); } SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file *id, int lockType){ + assert( lockType==SQLITE_LOCK_NONE || lockType==SQLITE_LOCK_SHARED ); return id->pMethods->xUnlock(id, lockType); } SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut){ @@ -21674,17 +25491,24 @@ SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){ #ifdef SQLITE_TEST if( op!=SQLITE_FCNTL_COMMIT_PHASETWO && op!=SQLITE_FCNTL_LOCK_TIMEOUT + && op!=SQLITE_FCNTL_CKPT_DONE + && op!=SQLITE_FCNTL_CKPT_START ){ /* Faults are not injected into COMMIT_PHASETWO because, assuming SQLite ** is using a regular VFS, it is called after the corresponding ** transaction has been committed. Injecting a fault at this point - ** confuses the test scripts - the COMMIT comand returns SQLITE_NOMEM + ** confuses the test scripts - the COMMIT command returns SQLITE_NOMEM ** but the transaction is committed anyway. ** ** The core must call OsFileControl() though, not OsFileControlHint(), ** as if a custom VFS (e.g. zipvfs) returns an error here, it probably ** means the commit really has failed and an error should be returned - ** to the user. */ + ** to the user. + ** + ** The CKPT_DONE and CKPT_START file-controls are write-only signals + ** to the cksumvfs. Their return code is meaningless and is ignored + ** by the SQLite core, so there is no point in simulating OOMs for them. + */ DO_OS_MALLOC_TEST(id); } #endif @@ -21699,6 +25523,7 @@ SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id){ return (xSectorSize ? xSectorSize(id) : SQLITE_DEFAULT_SECTOR_SIZE); } SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id){ + if( NEVER(id->pMethods==0) ) return 0; return id->pMethods->xDeviceCharacteristics(id); } #ifndef SQLITE_OMIT_WAL @@ -21760,14 +25585,15 @@ SQLITE_PRIVATE int sqlite3OsOpen( ** down into the VFS layer. Some SQLITE_OPEN_ flags (for example, ** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before ** reaching the VFS. */ - rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut); + assert( zPath || (flags & SQLITE_OPEN_EXCLUSIVE) ); + rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x1087f7f, pFlagsOut); assert( rc==SQLITE_OK || pFile->pMethods==0 ); return rc; } SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ DO_OS_MALLOC_TEST(0); assert( dirSync==0 || dirSync==1 ); - return pVfs->xDelete(pVfs, zPath, dirSync); + return pVfs->xDelete!=0 ? pVfs->xDelete(pVfs, zPath, dirSync) : SQLITE_OK; } SQLITE_PRIVATE int sqlite3OsAccess( sqlite3_vfs *pVfs, @@ -21790,6 +25616,8 @@ SQLITE_PRIVATE int sqlite3OsFullPathname( } #ifndef SQLITE_OMIT_LOAD_EXTENSION SQLITE_PRIVATE void *sqlite3OsDlOpen(sqlite3_vfs *pVfs, const char *zPath){ + assert( zPath!=0 ); + assert( strlen(zPath)<=SQLITE_MAX_PATHLEN ); /* tag-20210611-1 */ return pVfs->xDlOpen(pVfs, zPath); } SQLITE_PRIVATE void sqlite3OsDlError(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ @@ -21803,7 +25631,15 @@ SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *pVfs, void *pHandle){ } #endif /* SQLITE_OMIT_LOAD_EXTENSION */ SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ - return pVfs->xRandomness(pVfs, nByte, zBufOut); + if( sqlite3Config.iPrngSeed ){ + memset(zBufOut, 0, nByte); + if( ALWAYS(nByte>(signed)sizeof(unsigned)) ) nByte = sizeof(unsigned int); + memcpy(zBufOut, &sqlite3Config.iPrngSeed, nByte); + return SQLITE_OK; + }else{ + return pVfs->xRandomness(pVfs, nByte, zBufOut); + } + } SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *pVfs, int nMicro){ return pVfs->xSleep(pVfs, nMicro); @@ -21843,12 +25679,15 @@ SQLITE_PRIVATE int sqlite3OsOpenMalloc( rc = sqlite3OsOpen(pVfs, zFile, pFile, flags, pOutFlags); if( rc!=SQLITE_OK ){ sqlite3_free(pFile); + *ppFile = 0; }else{ *ppFile = pFile; } }else{ + *ppFile = 0; rc = SQLITE_NOMEM_BKPT; } + assert( *ppFile!=0 || rc!=SQLITE_OK ); return rc; } SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *pFile){ @@ -21890,7 +25729,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){ if( rc ) return 0; #endif #if SQLITE_THREADSAFE - mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif sqlite3_mutex_enter(mutex); for(pVfs = vfsList; pVfs; pVfs=pVfs->pNext){ @@ -21905,7 +25744,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){ ** Unlink a VFS from the linked list */ static void vfsUnlink(sqlite3_vfs *pVfs){ - assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) ); + assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)) ); if( pVfs==0 ){ /* No-op */ }else if( vfsList==pVfs ){ @@ -21936,7 +25775,7 @@ SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){ if( pVfs==0 ) return SQLITE_MISUSE_BKPT; #endif - MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) + MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); ) sqlite3_mutex_enter(mutex); vfsUnlink(pVfs); if( makeDflt || vfsList==0 ){ @@ -21955,9 +25794,12 @@ SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){ ** Unregister a VFS so that it is no longer accessible. */ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){ -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + MUTEX_LOGIC(sqlite3_mutex *mutex;) +#ifndef SQLITE_OMIT_AUTOINIT + int rc = sqlite3_initialize(); + if( rc ) return rc; #endif + MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); ) sqlite3_mutex_enter(mutex); vfsUnlink(pVfs); sqlite3_mutex_leave(mutex); @@ -21978,17 +25820,17 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){ ** ************************************************************************* ** -** This file contains code to support the concept of "benign" +** This file contains code to support the concept of "benign" ** malloc failures (when the xMalloc() or xRealloc() method of the ** sqlite3_mem_methods structure fails to allocate a block of memory -** and returns 0). +** and returns 0). ** ** Most malloc failures are non-benign. After they occur, SQLite ** abandons the current operation and returns an error code (usually ** SQLITE_NOMEM) to the user. However, sometimes a fault is not necessarily -** fatal. For example, if a malloc fails while resizing a hash table, this -** is completely recoverable simply by not carrying out the resize. The -** hash table will continue to function normally. So a malloc failure +** fatal. For example, if a malloc fails while resizing a hash table, this +** is completely recoverable simply by not carrying out the resize. The +** hash table will continue to function normally. So a malloc failure ** during a hash table resize is a benign fault. */ @@ -22190,7 +26032,7 @@ static malloc_zone_t* _sqliteZone_; #else /* if not __APPLE__ */ /* -** Use standard C library malloc and free on non-Apple systems. +** Use standard C library malloc and free on non-Apple systems. ** Also used by Apple systems if SQLITE_WITHOUT_ZONEMALLOC is defined. */ #define SQLITE_MALLOC(x) malloc(x) @@ -22276,7 +26118,7 @@ static void *sqlite3MemMalloc(int nByte){ ** or sqlite3MemRealloc(). ** ** For this low-level routine, we already know that pPrior!=0 since -** cases where pPrior==0 will have been intecepted and dealt with +** cases where pPrior==0 will have been intercepted and dealt with ** by higher-level routines. */ static void sqlite3MemFree(void *pPrior){ @@ -22364,13 +26206,13 @@ static int sqlite3MemInit(void *NotUsed){ return SQLITE_OK; } len = sizeof(cpuCount); - /* One usually wants to use hw.acctivecpu for MT decisions, but not here */ + /* One usually wants to use hw.activecpu for MT decisions, but not here */ sysctlbyname("hw.ncpu", &cpuCount, &len, NULL, 0); if( cpuCount>1 ){ /* defer MT decisions to system malloc */ _sqliteZone_ = malloc_default_zone(); }else{ - /* only 1 core, use our own zone to contention over global locks, + /* only 1 core, use our own zone to contention over global locks, ** e.g. we have our own dedicated locks */ _sqliteZone_ = malloc_create_zone(4096, 0); malloc_set_zone_name(_sqliteZone_, "Sqlite_Heap"); @@ -22494,7 +26336,7 @@ struct MemBlockHdr { ** when this module is combined with other in the amalgamation. */ static struct { - + /* ** Mutex to control access to the memory allocation subsystem. */ @@ -22505,7 +26347,7 @@ static struct { */ struct MemBlockHdr *pFirst; struct MemBlockHdr *pLast; - + /* ** The number of levels of backtrace to save in new allocations. */ @@ -22518,7 +26360,7 @@ static struct { int nTitle; /* Bytes of zTitle to save. Includes '\0' and padding */ char zTitle[100]; /* The title text */ - /* + /* ** sqlite3MallocDisallow() increments the following counter. ** sqlite3MallocAllow() decrements it. */ @@ -22563,7 +26405,7 @@ static void adjustStats(int iSize, int increment){ ** This routine checks the guards at either end of the allocation and ** if they are incorrect it asserts. */ -static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){ +static struct MemBlockHdr *sqlite3MemsysGetHeader(const void *pAllocation){ struct MemBlockHdr *p; int *pInt; u8 *pU8; @@ -22577,7 +26419,7 @@ static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){ pU8 = (u8*)pAllocation; assert( pInt[nReserve/sizeof(int)]==(int)REARGUARD ); /* This checks any of the "extra" bytes allocated due - ** to rounding up to an 8 byte boundary to ensure + ** to rounding up to an 8 byte boundary to ensure ** they haven't been overwritten. */ while( nReserve-- > p->iSize ) assert( pU8[nReserve]==0x65 ); @@ -22706,7 +26548,7 @@ static void *sqlite3MemMalloc(int nByte){ p = (void*)pInt; } sqlite3_mutex_leave(mem.mutex); - return p; + return p; } /* @@ -22716,7 +26558,7 @@ static void sqlite3MemFree(void *pPrior){ struct MemBlockHdr *pHdr; void **pBt; char *z; - assert( sqlite3GlobalConfig.bMemstat || sqlite3GlobalConfig.bCoreMutex==0 + assert( sqlite3GlobalConfig.bMemstat || sqlite3GlobalConfig.bCoreMutex==0 || mem.mutex!=0 ); pHdr = sqlite3MemsysGetHeader(pPrior); pBt = (void**)pHdr; @@ -22742,15 +26584,15 @@ static void sqlite3MemFree(void *pPrior){ randomFill(z, sizeof(void*)*pHdr->nBacktraceSlots + sizeof(*pHdr) + (int)pHdr->iSize + sizeof(int) + pHdr->nTitle); free(z); - sqlite3_mutex_leave(mem.mutex); + sqlite3_mutex_leave(mem.mutex); } /* ** Change the size of an existing memory allocation. ** ** For this debugging implementation, we *always* make a copy of the -** allocation into a new place in memory. In this way, if the -** higher level code is using pointer to the old allocation, it is +** allocation into a new place in memory. In this way, if the +** higher level code is using pointer to the old allocation, it is ** much more likely to break and we are much more liking to find ** the error. */ @@ -22793,7 +26635,7 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ ** Set the "type" of an allocation. */ SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){ - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ + if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){ struct MemBlockHdr *pHdr; pHdr = sqlite3MemsysGetHeader(p); assert( pHdr->iForeGuard==FOREGUARD ); @@ -22810,9 +26652,9 @@ SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){ ** ** assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); */ -SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){ +SQLITE_PRIVATE int sqlite3MemdebugHasType(const void *p, u8 eType){ int rc = 1; - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ + if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){ struct MemBlockHdr *pHdr; pHdr = sqlite3MemsysGetHeader(p); assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */ @@ -22832,9 +26674,9 @@ SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){ ** ** assert( sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); */ -SQLITE_PRIVATE int sqlite3MemdebugNoType(void *p, u8 eType){ +SQLITE_PRIVATE int sqlite3MemdebugNoType(const void *p, u8 eType){ int rc = 1; - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ + if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){ struct MemBlockHdr *pHdr; pHdr = sqlite3MemsysGetHeader(p); assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */ @@ -22884,7 +26726,7 @@ SQLITE_PRIVATE void sqlite3MemdebugSync(){ } /* -** Open the file indicated and write a log of all unfreed memory +** Open the file indicated and write a log of all unfreed memory ** allocations into that log. */ SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){ @@ -22901,7 +26743,7 @@ SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){ for(pHdr=mem.pFirst; pHdr; pHdr=pHdr->pNext){ char *z = (char*)pHdr; z -= pHdr->nBacktraceSlots*sizeof(void*) + pHdr->nTitle; - fprintf(out, "**** %lld bytes at %p from %s ****\n", + fprintf(out, "**** %lld bytes at %p from %s ****\n", pHdr->iSize, &pHdr[1], pHdr->nTitle ? z : "???"); if( pHdr->nBacktrace ){ fflush(out); @@ -22914,7 +26756,7 @@ SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){ fprintf(out, "COUNTS:\n"); for(i=0; i=nBlock ); - if( nBlock>=mem3.szMaster-1 ){ - /* Use the entire master */ - void *p = memsys3Checkout(mem3.iMaster, mem3.szMaster); - mem3.iMaster = 0; - mem3.szMaster = 0; - mem3.mnMaster = 0; + assert( mem3.szKeyBlk>=nBlock ); + if( nBlock>=mem3.szKeyBlk-1 ){ + /* Use the entire key chunk */ + void *p = memsys3Checkout(mem3.iKeyBlk, mem3.szKeyBlk); + mem3.iKeyBlk = 0; + mem3.szKeyBlk = 0; + mem3.mnKeyBlk = 0; return p; }else{ - /* Split the master block. Return the tail. */ + /* Split the key block. Return the tail. */ u32 newi, x; - newi = mem3.iMaster + mem3.szMaster - nBlock; - assert( newi > mem3.iMaster+1 ); - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = nBlock; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x |= 2; + newi = mem3.iKeyBlk + mem3.szKeyBlk - nBlock; + assert( newi > mem3.iKeyBlk+1 ); + mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = nBlock; + mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x |= 2; mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1; - mem3.szMaster -= nBlock; - mem3.aPool[newi-1].u.hdr.prevSize = mem3.szMaster; - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - if( mem3.szMaster < mem3.mnMaster ){ - mem3.mnMaster = mem3.szMaster; + mem3.szKeyBlk -= nBlock; + mem3.aPool[newi-1].u.hdr.prevSize = mem3.szKeyBlk; + x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2; + mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x; + if( mem3.szKeyBlk < mem3.mnKeyBlk ){ + mem3.mnKeyBlk = mem3.szKeyBlk; } return (void*)&mem3.aPool[newi]; } @@ -23244,18 +27086,18 @@ static void *memsys3FromMaster(u32 nBlock){ /* ** *pRoot is the head of a list of free chunks of the same size ** or same size hash. In other words, *pRoot is an entry in either -** mem3.aiSmall[] or mem3.aiHash[]. +** mem3.aiSmall[] or mem3.aiHash[]. ** ** This routine examines all entries on the given list and tries -** to coalesce each entries with adjacent free chunks. +** to coalesce each entries with adjacent free chunks. ** -** If it sees a chunk that is larger than mem3.iMaster, it replaces -** the current mem3.iMaster with the new larger chunk. In order for -** this mem3.iMaster replacement to work, the master chunk must be +** If it sees a chunk that is larger than mem3.iKeyBlk, it replaces +** the current mem3.iKeyBlk with the new larger chunk. In order for +** this mem3.iKeyBlk replacement to work, the key chunk must be ** linked into the hash tables. That is not the normal state of -** affairs, of course. The calling routine must link the master +** affairs, of course. The calling routine must link the key ** chunk before invoking this routine, then must unlink the (possibly -** changed) master chunk once this routine has finished. +** changed) key chunk once this routine has finished. */ static void memsys3Merge(u32 *pRoot){ u32 iNext, prev, size, i, x; @@ -23282,9 +27124,9 @@ static void memsys3Merge(u32 *pRoot){ }else{ size /= 4; } - if( size>mem3.szMaster ){ - mem3.iMaster = i; - mem3.szMaster = size; + if( size>mem3.szKeyBlk ){ + mem3.iKeyBlk = i; + mem3.szKeyBlk = size; } } } @@ -23333,26 +27175,26 @@ static void *memsys3MallocUnsafe(int nByte){ /* STEP 2: ** Try to satisfy the allocation by carving a piece off of the end - ** of the master chunk. This step usually works if step 1 fails. + ** of the key chunk. This step usually works if step 1 fails. */ - if( mem3.szMaster>=nBlock ){ - return memsys3FromMaster(nBlock); + if( mem3.szKeyBlk>=nBlock ){ + return memsys3FromKeyBlk(nBlock); } - /* STEP 3: + /* STEP 3: ** Loop through the entire memory pool. Coalesce adjacent free - ** chunks. Recompute the master chunk as the largest free chunk. + ** chunks. Recompute the key chunk as the largest free chunk. ** Then try again to satisfy the allocation by carving a piece off - ** of the end of the master chunk. This step happens very + ** of the end of the key chunk. This step happens very ** rarely (we hope!) */ for(toFree=nBlock*16; toFree<(mem3.nPool*16); toFree *= 2){ memsys3OutOfMemory(toFree); - if( mem3.iMaster ){ - memsys3Link(mem3.iMaster); - mem3.iMaster = 0; - mem3.szMaster = 0; + if( mem3.iKeyBlk ){ + memsys3Link(mem3.iKeyBlk); + mem3.iKeyBlk = 0; + mem3.szKeyBlk = 0; } for(i=0; i=nBlock ){ - return memsys3FromMaster(nBlock); + if( mem3.szKeyBlk ){ + memsys3Unlink(mem3.iKeyBlk); + if( mem3.szKeyBlk>=nBlock ){ + return memsys3FromKeyBlk(nBlock); } } } @@ -23393,23 +27235,23 @@ static void memsys3FreeUnsafe(void *pOld){ mem3.aPool[i+size-1].u.hdr.size4x &= ~2; memsys3Link(i); - /* Try to expand the master using the newly freed chunk */ - if( mem3.iMaster ){ - while( (mem3.aPool[mem3.iMaster-1].u.hdr.size4x&2)==0 ){ - size = mem3.aPool[mem3.iMaster-1].u.hdr.prevSize; - mem3.iMaster -= size; - mem3.szMaster += size; - memsys3Unlink(mem3.iMaster); - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster; + /* Try to expand the key using the newly freed chunk */ + if( mem3.iKeyBlk ){ + while( (mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x&2)==0 ){ + size = mem3.aPool[mem3.iKeyBlk-1].u.hdr.prevSize; + mem3.iKeyBlk -= size; + mem3.szKeyBlk += size; + memsys3Unlink(mem3.iKeyBlk); + x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2; + mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x; + mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk; } - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - while( (mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x&1)==0 ){ - memsys3Unlink(mem3.iMaster+mem3.szMaster); - mem3.szMaster += mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x/4; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster; + x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2; + while( (mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x&1)==0 ){ + memsys3Unlink(mem3.iKeyBlk+mem3.szKeyBlk); + mem3.szKeyBlk += mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x/4; + mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x; + mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk; } } } @@ -23447,7 +27289,7 @@ static void *memsys3Malloc(int nBytes){ memsys3Enter(); p = memsys3MallocUnsafe(nBytes); memsys3Leave(); - return (void*)p; + return (void*)p; } /* @@ -23505,11 +27347,11 @@ static int memsys3Init(void *NotUsed){ mem3.aPool = (Mem3Block *)sqlite3GlobalConfig.pHeap; mem3.nPool = (sqlite3GlobalConfig.nHeap / sizeof(Mem3Block)) - 2; - /* Initialize the master block. */ - mem3.szMaster = mem3.nPool; - mem3.mnMaster = mem3.szMaster; - mem3.iMaster = 1; - mem3.aPool[0].u.hdr.size4x = (mem3.szMaster<<2) + 2; + /* Initialize the key block. */ + mem3.szKeyBlk = mem3.nPool; + mem3.mnKeyBlk = mem3.szKeyBlk; + mem3.iKeyBlk = 1; + mem3.aPool[0].u.hdr.size4x = (mem3.szKeyBlk<<2) + 2; mem3.aPool[mem3.nPool].u.hdr.prevSize = mem3.nPool; mem3.aPool[mem3.nPool].u.hdr.size4x = 1; @@ -23528,7 +27370,7 @@ static void memsys3Shutdown(void *NotUsed){ /* -** Open the file indicated and write a log of all unfreed memory +** Open the file indicated and write a log of all unfreed memory ** allocations into that log. */ SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){ @@ -23569,7 +27411,7 @@ SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){ fprintf(out, "%p %6d bytes checked out\n", &mem3.aPool[i], (size/4)*8-8); }else{ fprintf(out, "%p %6d bytes free%s\n", &mem3.aPool[i], (size/4)*8-8, - i==mem3.iMaster ? " **master**" : ""); + i==mem3.iKeyBlk ? " **key**" : ""); } } for(i=0; i= M*(1 + log2(n)/2) - n + 1 @@ -23686,7 +27528,7 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void){ /* #include "sqliteInt.h" */ /* -** This version of the memory allocator is used only when +** This version of the memory allocator is used only when ** SQLITE_ENABLE_MEMSYS5 is defined. */ #ifdef SQLITE_ENABLE_MEMSYS5 @@ -23731,7 +27573,7 @@ static SQLITE_WSD struct Mem5Global { int szAtom; /* Smallest possible allocation in bytes */ int nBlock; /* Number of szAtom sized blocks in zPool */ u8 *zPool; /* Memory available to be allocated */ - + /* ** Mutex to control access to the memory allocation subsystem. */ @@ -23750,7 +27592,7 @@ static SQLITE_WSD struct Mem5Global { u32 maxCount; /* Maximum instantaneous currentCount */ u32 maxRequest; /* Largest allocation (exclusive of internal frag) */ #endif - + /* ** Lists of free blocks. aiFreelist[0] is a list of free blocks of ** size mem5.szAtom. aiFreelist[1] holds blocks of size szAtom*2. @@ -23926,7 +27768,7 @@ static void memsys5FreeUnsafe(void *pOld){ u32 size, iLogsize; int iBlock; - /* Set iBlock to the index of the block pointed to by pOld in + /* Set iBlock to the index of the block pointed to by pOld in ** the array of mem5.szAtom byte blocks pointed to by mem5.zPool. */ iBlock = (int)(((u8 *)pOld-mem5.zPool)/mem5.szAtom); @@ -23995,7 +27837,7 @@ static void *memsys5Malloc(int nBytes){ p = memsys5MallocUnsafe(nBytes); memsys5Leave(); } - return (void*)p; + return (void*)p; } /* @@ -24008,14 +27850,14 @@ static void memsys5Free(void *pPrior){ assert( pPrior!=0 ); memsys5Enter(); memsys5FreeUnsafe(pPrior); - memsys5Leave(); + memsys5Leave(); } /* ** Change the size of an existing memory allocation. ** ** The outer layer memory allocator prevents this routine from -** being called with pPrior==0. +** being called with pPrior==0. ** ** nBytes is always a value obtained from a prior call to ** memsys5Round(). Hence nBytes is always a non-negative power @@ -24055,8 +27897,17 @@ static void *memsys5Realloc(void *pPrior, int nBytes){ */ static int memsys5Roundup(int n){ int iFullSz; - if( n > 0x40000000 ) return 0; - for(iFullSz=mem5.szAtom; iFullSz0x10000000 ){ + if( n>0x40000000 ) return 0; + if( n>0x20000000 ) return 0x40000000; + return 0x20000000; + } + for(iFullSz=mem5.szAtom*8; iFullSz=(i64)n ) return iFullSz/2; return iFullSz; } @@ -24148,7 +27999,7 @@ static void memsys5Shutdown(void *NotUsed){ #ifdef SQLITE_TEST /* -** Open the file indicated and write a log of all unfreed memory +** Open the file indicated and write a log of all unfreed memory ** allocations into that log. */ SQLITE_PRIVATE void sqlite3Memsys5Dump(const char *zFilename){ @@ -24190,7 +28041,7 @@ SQLITE_PRIVATE void sqlite3Memsys5Dump(const char *zFilename){ #endif /* -** This routine is the only routine in this file with external +** This routine is the only routine in this file with external ** linkage. It returns a pointer to a static sqlite3_mem_methods ** struct populated with the memsys5 methods. */ @@ -24245,7 +28096,7 @@ static SQLITE_WSD int mutexIsInit = 0; /* ** This block (enclosed by SQLITE_ENABLE_MULTITHREADED_CHECKS) contains ** the implementation of a wrapper around the system default mutex -** implementation (sqlite3DefaultMutex()). +** implementation (sqlite3DefaultMutex()). ** ** Most calls are passed directly through to the underlying default ** mutex implementation. Except, if a mutex is configured by calling @@ -24256,7 +28107,7 @@ static SQLITE_WSD int mutexIsInit = 0; ** apps that usually use SQLITE_CONFIG_MULTITHREAD mode. */ -/* +/* ** Type for all mutexes used when SQLITE_ENABLE_MULTITHREADED_CHECKS ** is defined. Variable CheckMutex.mutex is a pointer to the real mutex ** allocated by the system mutex implementation. Variable iType is usually set @@ -24273,9 +28124,9 @@ struct CheckMutex { #define SQLITE_MUTEX_WARNONCONTENTION (-1) -/* +/* ** Pointer to real mutex methods object used by the CheckMutex -** implementation. Set by checkMutexInit(). +** implementation. Set by checkMutexInit(). */ static SQLITE_WSD const sqlite3_mutex_methods *pGlobalMutexMethods; @@ -24291,13 +28142,13 @@ static int checkMutexNotheld(sqlite3_mutex *p){ /* ** Initialize and deinitialize the mutex subsystem. */ -static int checkMutexInit(void){ +static int checkMutexInit(void){ pGlobalMutexMethods = sqlite3DefaultMutex(); - return SQLITE_OK; + return SQLITE_OK; } -static int checkMutexEnd(void){ +static int checkMutexEnd(void){ pGlobalMutexMethods = 0; - return SQLITE_OK; + return SQLITE_OK; } /* @@ -24371,7 +28222,7 @@ static void checkMutexEnter(sqlite3_mutex *p){ if( SQLITE_OK==pGlobalMutexMethods->xMutexTry(pCheck->mutex) ){ return; } - sqlite3_log(SQLITE_MISUSE, + sqlite3_log(SQLITE_MISUSE, "illegal multi-threaded access to database connection" ); } @@ -24430,11 +28281,11 @@ SQLITE_PRIVATE void sqlite3MutexWarnOnContention(sqlite3_mutex *p){ /* ** Initialize the mutex system. */ -SQLITE_PRIVATE int sqlite3MutexInit(void){ +SQLITE_PRIVATE int sqlite3MutexInit(void){ int rc = SQLITE_OK; if( !sqlite3GlobalConfig.mutex.xMutexAlloc ){ /* If the xMutexAlloc method has not been set, then the user did not - ** install a mutex implementation via sqlite3_config() prior to + ** install a mutex implementation via sqlite3_config() prior to ** sqlite3_initialize() being called. This block copies pointers to ** the default implementation into the sqlite3GlobalConfig structure. */ @@ -24468,6 +28319,7 @@ SQLITE_PRIVATE int sqlite3MutexInit(void){ GLOBAL(int, mutexIsInit) = 1; #endif + sqlite3MemoryBarrier(); return rc; } @@ -24545,7 +28397,7 @@ SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *p){ /* ** The sqlite3_mutex_leave() routine exits a mutex that was previously -** entered by the same thread. The behavior is undefined if the mutex +** entered by the same thread. The behavior is undefined if the mutex ** is not currently entered. If a NULL pointer is passed as an argument ** this function is a no-op. */ @@ -24614,9 +28466,9 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){ */ static int noopMutexInit(void){ return SQLITE_OK; } static int noopMutexEnd(void){ return SQLITE_OK; } -static sqlite3_mutex *noopMutexAlloc(int id){ +static sqlite3_mutex *noopMutexAlloc(int id){ UNUSED_PARAMETER(id); - return (sqlite3_mutex*)8; + return (sqlite3_mutex*)8; } static void noopMutexFree(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; } static void noopMutexEnter(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; } @@ -24681,7 +28533,7 @@ static int debugMutexEnd(void){ return SQLITE_OK; } /* ** The sqlite3_mutex_alloc() routine allocates a new ** mutex and returns a pointer to it. If it returns NULL -** that means that a mutex could not be allocated. +** that means that a mutex could not be allocated. */ static sqlite3_mutex *debugMutexAlloc(int id){ static sqlite3_debug_mutex aStatic[SQLITE_MUTEX_STATIC_VFS3 - 1]; @@ -24821,7 +28673,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ /* ** The sqlite3_mutex.id, sqlite3_mutex.nRef, and sqlite3_mutex.owner fields -** are necessary under two condidtions: (1) Debug builds and (2) using +** are necessary under two conditions: (1) Debug builds and (2) using ** home-grown mutexes. Encapsulate these conditions into a single #define. */ #if defined(SQLITE_DEBUG) || defined(SQLITE_HOMEGROWN_RECURSIVE_MUTEX) @@ -24859,7 +28711,7 @@ struct sqlite3_mutex { ** there might be race conditions that can cause these routines to ** deliver incorrect results. In particular, if pthread_equal() is ** not an atomic operation, then these routines might delivery -** incorrect results. On most platforms, pthread_equal() is a +** incorrect results. On most platforms, pthread_equal() is a ** comparison of two integers and is therefore atomic. But we are ** told that HPUX is not such a platform. If so, then these routines ** will not always work correctly on HPUX. @@ -24907,7 +28759,7 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; } **
        **
      • SQLITE_MUTEX_FAST **
      • SQLITE_MUTEX_RECURSIVE -**
      • SQLITE_MUTEX_STATIC_MASTER +**
      • SQLITE_MUTEX_STATIC_MAIN **
      • SQLITE_MUTEX_STATIC_MEM **
      • SQLITE_MUTEX_STATIC_OPEN **
      • SQLITE_MUTEX_STATIC_PRNG @@ -24941,7 +28793,7 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; } ** ** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. But for the static +** returns a different mutex on every call. But for the static ** mutex types, the same mutex is returned on every call that has ** the same type number. */ @@ -25052,7 +28904,7 @@ static void pthreadMutexEnter(sqlite3_mutex *p){ ** is atomic - that it cannot be deceived into thinking self ** and p->owner are equal if p->owner changes between two values ** that are not equal to self while the comparison is taking place. - ** This implementation also assumes a coherent cache - that + ** This implementation also assumes a coherent cache - that ** separate processes cannot read different values from the same ** address at the same time. If either of these two conditions ** are not met, then the mutexes will fail and problems will result. @@ -25095,7 +28947,7 @@ static int pthreadMutexTry(sqlite3_mutex *p){ ** is atomic - that it cannot be deceived into thinking self ** and p->owner are equal if p->owner changes between two values ** that are not equal to self while the comparison is taking place. - ** This implementation also assumes a coherent cache - that + ** This implementation also assumes a coherent cache - that ** separate processes cannot read different values from the same ** address at the same time. If either of these two conditions ** are not met, then the mutexes will fail and problems will result. @@ -25209,205 +29061,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ /* ** Include code that is common to all os_*.c files */ -/************** Include os_common.h in the middle of mutex_w32.c *************/ -/************** Begin file os_common.h ***************************************/ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains macros and a little bit of code that is common to -** all of the platform-specific files (os_*.c) and is #included into those -** files. -** -** This file should be #included by the os_*.c files only. It is not a -** general purpose header file. -*/ -#ifndef _OS_COMMON_H_ -#define _OS_COMMON_H_ - -/* -** At least two bugs have slipped in because we changed the MEMORY_DEBUG -** macro to SQLITE_DEBUG and some older makefiles have not yet made the -** switch. The following code should catch this problem at compile-time. -*/ -#ifdef MEMORY_DEBUG -# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." -#endif - -/* -** Macros for performance tracing. Normally turned off. Only works -** on i486 hardware. -*/ -#ifdef SQLITE_PERFORMANCE_TRACE - -/* -** hwtime.h contains inline assembler code for implementing -** high-performance timing routines. -*/ -/************** Include hwtime.h in the middle of os_common.h ****************/ -/************** Begin file hwtime.h ******************************************/ -/* -** 2008 May 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains inline asm code for retrieving "high-performance" -** counters for x86 class CPUs. -*/ -#ifndef SQLITE_HWTIME_H -#define SQLITE_HWTIME_H - -/* -** The following routine only works on pentium-class (or newer) processors. -** It uses the RDTSC opcode to read the cycle count value out of the -** processor and returns that value. This can be used for high-res -** profiling. -*/ -#if (defined(__GNUC__) || defined(_MSC_VER)) && \ - (defined(i386) || defined(__i386__) || defined(_M_IX86)) - - #if defined(__GNUC__) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned int lo, hi; - __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); - return (sqlite_uint64)hi << 32 | lo; - } - - #elif defined(_MSC_VER) - - __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ - __asm { - rdtsc - ret ; return value at EDX:EAX - } - } - - #endif - -#elif (defined(__GNUC__) && defined(__x86_64__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long val; - __asm__ __volatile__ ("rdtsc" : "=A" (val)); - return val; - } - -#elif (defined(__GNUC__) && defined(__ppc__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long long retval; - unsigned long junk; - __asm__ __volatile__ ("\n\ - 1: mftbu %1\n\ - mftb %L0\n\ - mftbu %0\n\ - cmpw %0,%1\n\ - bne 1b" - : "=r" (retval), "=r" (junk)); - return retval; - } - -#else - - #error Need implementation of sqlite3Hwtime() for your platform. - - /* - ** To compile without implementing sqlite3Hwtime() for your platform, - ** you can remove the above #error and use the following - ** stub function. You will lose timing support for many - ** of the debugging and testing utilities, but it should at - ** least compile and run. - */ -SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } - -#endif - -#endif /* !defined(SQLITE_HWTIME_H) */ - -/************** End of hwtime.h **********************************************/ -/************** Continuing where we left off in os_common.h ******************/ - -static sqlite_uint64 g_start; -static sqlite_uint64 g_elapsed; -#define TIMER_START g_start=sqlite3Hwtime() -#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start -#define TIMER_ELAPSED g_elapsed -#else -#define TIMER_START -#define TIMER_END -#define TIMER_ELAPSED ((sqlite_uint64)0) -#endif - -/* -** If we compile with the SQLITE_TEST macro set, then the following block -** of code will give us the ability to simulate a disk I/O error. This -** is used for testing the I/O recovery logic. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_io_error_hit; -SQLITE_API extern int sqlite3_io_error_hardhit; -SQLITE_API extern int sqlite3_io_error_pending; -SQLITE_API extern int sqlite3_io_error_persist; -SQLITE_API extern int sqlite3_io_error_benign; -SQLITE_API extern int sqlite3_diskfull_pending; -SQLITE_API extern int sqlite3_diskfull; -#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) -#define SimulateIOError(CODE) \ - if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ - || sqlite3_io_error_pending-- == 1 ) \ - { local_ioerr(); CODE; } -static void local_ioerr(){ - IOTRACE(("IOERR\n")); - sqlite3_io_error_hit++; - if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; -} -#define SimulateDiskfullError(CODE) \ - if( sqlite3_diskfull_pending ){ \ - if( sqlite3_diskfull_pending == 1 ){ \ - local_ioerr(); \ - sqlite3_diskfull = 1; \ - sqlite3_io_error_hit = 1; \ - CODE; \ - }else{ \ - sqlite3_diskfull_pending--; \ - } \ - } -#else -#define SimulateIOErrorBenign(X) -#define SimulateIOError(A) -#define SimulateDiskfullError(A) -#endif /* defined(SQLITE_TEST) */ - -/* -** When testing, keep a count of the number of open files. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_open_file_count; -#define OpenCounter(X) sqlite3_open_file_count+=(X) -#else -#define OpenCounter(X) -#endif /* defined(SQLITE_TEST) */ - -#endif /* !defined(_OS_COMMON_H_) */ - -/************** End of os_common.h *******************************************/ -/************** Continuing where we left off in mutex_w32.c ******************/ +/* #include "os_common.h" */ /* ** Include the header file for the Windows VFS. @@ -25520,7 +29174,7 @@ struct sqlite3_mutex { CRITICAL_SECTION mutex; /* Mutex controlling the lock */ int id; /* Mutex type */ #ifdef SQLITE_DEBUG - volatile int nRef; /* Number of enterances */ + volatile int nRef; /* Number of entrances */ volatile DWORD owner; /* Thread holding this mutex */ volatile LONG trace; /* True to trace changes */ #endif @@ -25653,7 +29307,7 @@ static int winMutexEnd(void){ **
          **
        • SQLITE_MUTEX_FAST **
        • SQLITE_MUTEX_RECURSIVE -**
        • SQLITE_MUTEX_STATIC_MASTER +**
        • SQLITE_MUTEX_STATIC_MAIN **
        • SQLITE_MUTEX_STATIC_MEM **
        • SQLITE_MUTEX_STATIC_OPEN **
        • SQLITE_MUTEX_STATIC_PRNG @@ -25916,19 +29570,27 @@ SQLITE_API int sqlite3_release_memory(int n){ #endif } +/* +** Default value of the hard heap limit. 0 means "no limit". +*/ +#ifndef SQLITE_MAX_MEMORY +# define SQLITE_MAX_MEMORY 0 +#endif + /* ** State information local to the memory allocation subsystem. */ static SQLITE_WSD struct Mem0Global { sqlite3_mutex *mutex; /* Mutex to serialize access */ sqlite3_int64 alarmThreshold; /* The soft heap limit */ + sqlite3_int64 hardLimit; /* The hard upper bound on memory */ /* ** True if heap is nearly "full" where "full" is defined by the ** sqlite3_soft_heap_limit() setting. */ int nearlyFull; -} mem0 = { 0, 0, 0 }; +} mem0 = { 0, SQLITE_MAX_MEMORY, SQLITE_MAX_MEMORY, 0 }; #define mem0 GLOBAL(struct Mem0Global, mem0) @@ -25958,8 +29620,15 @@ SQLITE_API int sqlite3_memory_alarm( #endif /* -** Set the soft heap-size limit for the library. Passing a zero or -** negative value indicates no limit. +** Set the soft heap-size limit for the library. An argument of +** zero disables the limit. A negative argument is a no-op used to +** obtain the return value. +** +** The return value is the value of the heap limit just before this +** interface was called. +** +** If the hard heap limit is enabled, then the soft heap limit cannot +** be disabled nor raised above the hard heap limit. */ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){ sqlite3_int64 priorLimit; @@ -25975,9 +29644,12 @@ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){ sqlite3_mutex_leave(mem0.mutex); return priorLimit; } + if( mem0.hardLimit>0 && (n>mem0.hardLimit || n==0) ){ + n = mem0.hardLimit; + } mem0.alarmThreshold = n; nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - mem0.nearlyFull = (n>0 && n<=nUsed); + AtomicStore(&mem0.nearlyFull, n>0 && n<=nUsed); sqlite3_mutex_leave(mem0.mutex); excess = sqlite3_memory_used() - n; if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff)); @@ -25988,6 +29660,37 @@ SQLITE_API void sqlite3_soft_heap_limit(int n){ sqlite3_soft_heap_limit64(n); } +/* +** Set the hard heap-size limit for the library. An argument of zero +** disables the hard heap limit. A negative argument is a no-op used +** to obtain the return value without affecting the hard heap limit. +** +** The return value is the value of the hard heap limit just prior to +** calling this interface. +** +** Setting the hard heap limit will also activate the soft heap limit +** and constrain the soft heap limit to be no more than the hard heap +** limit. +*/ +SQLITE_API sqlite3_int64 sqlite3_hard_heap_limit64(sqlite3_int64 n){ + sqlite3_int64 priorLimit; +#ifndef SQLITE_OMIT_AUTOINIT + int rc = sqlite3_initialize(); + if( rc ) return -1; +#endif + sqlite3_mutex_enter(mem0.mutex); + priorLimit = mem0.hardLimit; + if( n>=0 ){ + mem0.hardLimit = n; + if( nSQLITE_MAX_MEMORY ){ - *pp = 0; - return; - } -#endif - sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, n); if( mem0.alarmThreshold>0 ){ sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); if( nUsed >= mem0.alarmThreshold - nFull ){ - mem0.nearlyFull = 1; + AtomicStore(&mem0.nearlyFull, 1); sqlite3MallocAlarm(nFull); + if( mem0.hardLimit ){ + nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); + if( nUsed >= mem0.hardLimit - nFull ){ + *pp = 0; + return; + } + } }else{ - mem0.nearlyFull = 0; + AtomicStore(&mem0.nearlyFull, 0); } } p = sqlite3GlobalConfig.m.xMalloc(nFull); @@ -26106,18 +29808,34 @@ static void mallocWithAlarm(int n, void **pp){ *pp = p; } +/* +** Maximum size of any single memory allocation. +** +** This is not a limit on the total amount of memory used. This is +** a limit on the size parameter to sqlite3_malloc() and sqlite3_realloc(). +** +** The upper bound is slightly less than 2GiB: 0x7ffffeff == 2,147,483,391 +** This provides a 256-byte safety margin for defense against 32-bit +** signed integer overflow bugs when computing memory allocation sizes. +** Paranoid applications might want to reduce the maximum allocation size +** further for an even larger safety margin. 0x3fffffff or 0x0fffffff +** or even smaller would be reasonable upper bounds on the size of a memory +** allocations for most applications. +*/ +#ifndef SQLITE_MAX_ALLOCATION_SIZE +# define SQLITE_MAX_ALLOCATION_SIZE 2147483391 +#endif +#if SQLITE_MAX_ALLOCATION_SIZE>2147483391 +# error Maximum size for SQLITE_MAX_ALLOCATION_SIZE is 2147483391 +#endif + /* ** Allocate memory. This routine is like sqlite3_malloc() except that it ** assumes the memory subsystem has already been initialized. */ SQLITE_PRIVATE void *sqlite3Malloc(u64 n){ void *p; - if( n==0 || n>=0x7fffff00 ){ - /* A memory allocation of a number of bytes which is near the maximum - ** signed integer value might cause an integer overflow inside of the - ** xMalloc(). Hence we limit the maximum size to 0x7fffff00, giving - ** 255 bytes of overhead. SQLite itself will never use anything near - ** this amount. The only way to reach the limit is with sqlite3_malloc() */ + if( n==0 || n>SQLITE_MAX_ALLOCATION_SIZE ){ p = 0; }else if( sqlite3GlobalConfig.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); @@ -26152,8 +29870,8 @@ SQLITE_API void *sqlite3_malloc64(sqlite3_uint64 n){ ** TRUE if p is a lookaside memory allocation from db */ #ifndef SQLITE_OMIT_LOOKASIDE -static int isLookaside(sqlite3 *db, void *p){ - return SQLITE_WITHIN(p, db->lookaside.pStart, db->lookaside.pEnd); +static int isLookaside(sqlite3 *db, const void *p){ + return SQLITE_WITHIN(p, db->lookaside.pStart, db->lookaside.pTrueEnd); } #else #define isLookaside(A,B) 0 @@ -26163,27 +29881,43 @@ static int isLookaside(sqlite3 *db, void *p){ ** Return the size of a memory allocation previously obtained from ** sqlite3Malloc() or sqlite3_malloc(). */ -SQLITE_PRIVATE int sqlite3MallocSize(void *p){ +SQLITE_PRIVATE int sqlite3MallocSize(const void *p){ assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - return sqlite3GlobalConfig.m.xSize(p); + return sqlite3GlobalConfig.m.xSize((void*)p); } -SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){ - assert( p!=0 ); - if( db==0 || !isLookaside(db,p) ){ -#ifdef SQLITE_DEBUG - if( db==0 ){ - assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - }else{ - assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); - assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); - } +static int lookasideMallocSize(sqlite3 *db, const void *p){ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + return plookaside.pMiddle ? db->lookaside.szTrue : LOOKASIDE_SMALL; +#else + return db->lookaside.szTrue; #endif - return sqlite3GlobalConfig.m.xSize(p); - }else{ - assert( sqlite3_mutex_held(db->mutex) ); - return db->lookaside.sz; +} +SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, const void *p){ + assert( p!=0 ); +#ifdef SQLITE_DEBUG + if( db==0 ){ + assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); + }else if( !isLookaside(db,p) ){ + assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); } +#endif + if( db ){ + if( ((uptr)p)<(uptr)(db->lookaside.pTrueEnd) ){ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){ + assert( sqlite3_mutex_held(db->mutex) ); + return LOOKASIDE_SMALL; + } +#endif + if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){ + assert( sqlite3_mutex_held(db->mutex) ); + return db->lookaside.szTrue; + } + } + } + return sqlite3GlobalConfig.m.xSize((void*)p); } SQLITE_API sqlite3_uint64 sqlite3_msize(void *p){ assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); @@ -26226,20 +29960,34 @@ SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3 *db, void *p){ assert( db==0 || sqlite3_mutex_held(db->mutex) ); assert( p!=0 ); if( db ){ + if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){ + LookasideSlot *pBuf = (LookasideSlot*)p; + assert( db->pnBytesFreed==0 ); +#ifdef SQLITE_DEBUG + memset(p, 0xaa, LOOKASIDE_SMALL); /* Trash freed content */ +#endif + pBuf->pNext = db->lookaside.pSmallFree; + db->lookaside.pSmallFree = pBuf; + return; + } +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ + if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){ + LookasideSlot *pBuf = (LookasideSlot*)p; + assert( db->pnBytesFreed==0 ); +#ifdef SQLITE_DEBUG + memset(p, 0xaa, db->lookaside.szTrue); /* Trash freed content */ +#endif + pBuf->pNext = db->lookaside.pFree; + db->lookaside.pFree = pBuf; + return; + } + } if( db->pnBytesFreed ){ measureAllocationSize(db, p); return; } - if( isLookaside(db, p) ){ - LookasideSlot *pBuf = (LookasideSlot*)p; -#ifdef SQLITE_DEBUG - /* Trash all content in the buffer being freed */ - memset(p, 0xaa, db->lookaside.sz); -#endif - pBuf->pNext = db->lookaside.pFree; - db->lookaside.pFree = pBuf; - return; - } } assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); @@ -26247,6 +29995,43 @@ SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3 *db, void *p){ sqlite3MemdebugSetType(p, MEMTYPE_HEAP); sqlite3_free(p); } +SQLITE_PRIVATE void sqlite3DbNNFreeNN(sqlite3 *db, void *p){ + assert( db!=0 ); + assert( sqlite3_mutex_held(db->mutex) ); + assert( p!=0 ); + if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){ + LookasideSlot *pBuf = (LookasideSlot*)p; + assert( db->pnBytesFreed==0 ); +#ifdef SQLITE_DEBUG + memset(p, 0xaa, LOOKASIDE_SMALL); /* Trash freed content */ +#endif + pBuf->pNext = db->lookaside.pSmallFree; + db->lookaside.pSmallFree = pBuf; + return; + } +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ + if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){ + LookasideSlot *pBuf = (LookasideSlot*)p; + assert( db->pnBytesFreed==0 ); +#ifdef SQLITE_DEBUG + memset(p, 0xaa, db->lookaside.szTrue); /* Trash freed content */ +#endif + pBuf->pNext = db->lookaside.pFree; + db->lookaside.pFree = pBuf; + return; + } + } + if( db->pnBytesFreed ){ + measureAllocationSize(db, p); + return; + } + assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + sqlite3MemdebugSetType(p, MEMTYPE_HEAP); + sqlite3_free(p); +} SQLITE_PRIVATE void sqlite3DbFree(sqlite3 *db, void *p){ assert( db==0 || sqlite3_mutex_held(db->mutex) ); if( p ) sqlite3DbFreeNN(db, p); @@ -26279,18 +30064,25 @@ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, u64 nBytes){ if( nOld==nNew ){ pNew = pOld; }else if( sqlite3GlobalConfig.bMemstat ){ + sqlite3_int64 nUsed; sqlite3_mutex_enter(mem0.mutex); sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, (int)nBytes); nDiff = nNew - nOld; - if( nDiff>0 && sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >= + if( nDiff>0 && (nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED)) >= mem0.alarmThreshold-nDiff ){ sqlite3MallocAlarm(nDiff); + if( mem0.hardLimit>0 && nUsed >= mem0.hardLimit - nDiff ){ + sqlite3_mutex_leave(mem0.mutex); + return 0; + } } pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); +#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT if( pNew==0 && mem0.alarmThreshold>0 ){ sqlite3MallocAlarm((int)nBytes); pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); } +#endif if( pNew ){ nNew = sqlite3MallocSize(pNew); sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld); @@ -26324,7 +30116,7 @@ SQLITE_API void *sqlite3_realloc64(void *pOld, sqlite3_uint64 n){ /* ** Allocate and zero memory. -*/ +*/ SQLITE_PRIVATE void *sqlite3MallocZero(u64 n){ void *p = sqlite3Malloc(n); if( p ){ @@ -26354,13 +30146,13 @@ static SQLITE_NOINLINE void *dbMallocRawFinish(sqlite3 *db, u64 n){ assert( db!=0 ); p = sqlite3Malloc(n); if( !p ) sqlite3OomFault(db); - sqlite3MemdebugSetType(p, + sqlite3MemdebugSetType(p, (db->lookaside.bDisable==0) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP); return p; } /* -** Allocate memory, either lookaside (if possible) or heap. +** Allocate memory, either lookaside (if possible) or heap. ** If the allocation fails, set the mallocFailed flag in ** the connection pointer. ** @@ -26394,23 +30186,37 @@ SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){ assert( db!=0 ); assert( sqlite3_mutex_held(db->mutex) ); assert( db->pnBytesFreed==0 ); - if( db->lookaside.bDisable==0 ){ - assert( db->mallocFailed==0 ); - if( n>db->lookaside.sz ){ + if( n>db->lookaside.sz ){ + if( !db->lookaside.bDisable ){ db->lookaside.anStat[1]++; - }else if( (pBuf = db->lookaside.pFree)!=0 ){ - db->lookaside.pFree = pBuf->pNext; - db->lookaside.anStat[0]++; - return (void*)pBuf; - }else if( (pBuf = db->lookaside.pInit)!=0 ){ - db->lookaside.pInit = pBuf->pNext; - db->lookaside.anStat[0]++; - return (void*)pBuf; - }else{ - db->lookaside.anStat[2]++; + }else if( db->mallocFailed ){ + return 0; } - }else if( db->mallocFailed ){ - return 0; + return dbMallocRawFinish(db, n); + } +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( n<=LOOKASIDE_SMALL ){ + if( (pBuf = db->lookaside.pSmallFree)!=0 ){ + db->lookaside.pSmallFree = pBuf->pNext; + db->lookaside.anStat[0]++; + return (void*)pBuf; + }else if( (pBuf = db->lookaside.pSmallInit)!=0 ){ + db->lookaside.pSmallInit = pBuf->pNext; + db->lookaside.anStat[0]++; + return (void*)pBuf; + } + } +#endif + if( (pBuf = db->lookaside.pFree)!=0 ){ + db->lookaside.pFree = pBuf->pNext; + db->lookaside.anStat[0]++; + return (void*)pBuf; + }else if( (pBuf = db->lookaside.pInit)!=0 ){ + db->lookaside.pInit = pBuf->pNext; + db->lookaside.anStat[0]++; + return (void*)pBuf; + }else{ + db->lookaside.anStat[2]++; } #else assert( db!=0 ); @@ -26434,7 +30240,16 @@ SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, u64 n){ assert( db!=0 ); if( p==0 ) return sqlite3DbMallocRawNN(db, n); assert( sqlite3_mutex_held(db->mutex) ); - if( isLookaside(db,p) && n<=db->lookaside.sz ) return p; + if( ((uptr)p)<(uptr)db->lookaside.pEnd ){ +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( ((uptr)p)>=(uptr)db->lookaside.pMiddle ){ + if( n<=LOOKASIDE_SMALL ) return p; + }else +#endif + if( ((uptr)p)>=(uptr)db->lookaside.pStart ){ + if( n<=db->lookaside.szTrue ) return p; + } + } return dbReallocFinish(db, p, n); } static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){ @@ -26445,14 +30260,14 @@ static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){ if( isLookaside(db, p) ){ pNew = sqlite3DbMallocRawNN(db, n); if( pNew ){ - memcpy(pNew, p, db->lookaside.sz); + memcpy(pNew, p, lookasideMallocSize(db, p)); sqlite3DbFree(db, p); } }else{ assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - pNew = sqlite3_realloc64(p, n); + pNew = sqlite3Realloc(p, n); if( !pNew ){ sqlite3OomFault(db); } @@ -26477,9 +30292,9 @@ SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, u64 n){ } /* -** Make a copy of a string in memory obtained from sqliteMalloc(). These +** Make a copy of a string in memory obtained from sqliteMalloc(). These ** functions call sqlite3MallocRaw() directly instead of sqliteMalloc(). This -** is because when memory debugging is turned on, these two functions are +** is because when memory debugging is turned on, these two functions are ** called via macros that record the current file and line number in the ** ThreadData structure. */ @@ -26499,11 +30314,9 @@ SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3 *db, const char *z){ SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){ char *zNew; assert( db!=0 ); - if( z==0 ){ - return 0; - } + assert( z!=0 || n==0 ); assert( (n&0x7fffffff)==n ); - zNew = sqlite3DbMallocRawNN(db, n+1); + zNew = z ? sqlite3DbMallocRawNN(db, n+1) : 0; if( zNew ){ memcpy(zNew, z, (size_t)n); zNew[n] = 0; @@ -26518,9 +30331,14 @@ SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){ */ SQLITE_PRIVATE char *sqlite3DbSpanDup(sqlite3 *db, const char *zStart, const char *zEnd){ int n; +#ifdef SQLITE_DEBUG + /* Because of the way the parser works, the span is guaranteed to contain + ** at least one non-space character */ + for(n=0; sqlite3Isspace(zStart[n]); n++){ assert( &zStart[n]0) && sqlite3Isspace(zStart[n-1]) ) n--; + while( sqlite3Isspace(zStart[n-1]) ) n--; return sqlite3DbStrNDup(db, zStart, n); } @@ -26528,8 +30346,9 @@ SQLITE_PRIVATE char *sqlite3DbSpanDup(sqlite3 *db, const char *zStart, const cha ** Free any prior content in *pz and replace it with a copy of zNew. */ SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){ + char *z = sqlite3DbStrDup(db, zNew); sqlite3DbFree(db, *pz); - *pz = sqlite3DbStrDup(db, zNew); + *pz = z; } /* @@ -26537,15 +30356,32 @@ SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){ ** has happened. This routine will set db->mallocFailed, and also ** temporarily disable the lookaside memory allocator and interrupt ** any running VDBEs. +** +** Always return a NULL pointer so that this routine can be invoked using +** +** return sqlite3OomFault(db); +** +** and thereby avoid unnecessary stack frame allocations for the overwhelmingly +** common case where no OOM occurs. */ -SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){ +SQLITE_PRIVATE void *sqlite3OomFault(sqlite3 *db){ if( db->mallocFailed==0 && db->bBenignMalloc==0 ){ db->mallocFailed = 1; if( db->nVdbeExec>0 ){ - db->u1.isInterrupted = 1; + AtomicStore(&db->u1.isInterrupted, 1); + } + DisableLookaside; + if( db->pParse ){ + Parse *pParse; + sqlite3ErrorMsg(db->pParse, "out of memory"); + db->pParse->rc = SQLITE_NOMEM_BKPT; + for(pParse=db->pParse->pOuterParse; pParse; pParse = pParse->pOuterParse){ + pParse->nErr++; + pParse->rc = SQLITE_NOMEM; + } } - db->lookaside.bDisable++; } + return 0; } /* @@ -26558,42 +30394,45 @@ SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){ SQLITE_PRIVATE void sqlite3OomClear(sqlite3 *db){ if( db->mallocFailed && db->nVdbeExec==0 ){ db->mallocFailed = 0; - db->u1.isInterrupted = 0; + AtomicStore(&db->u1.isInterrupted, 0); assert( db->lookaside.bDisable>0 ); - db->lookaside.bDisable--; + EnableLookaside; } } /* -** Take actions at the end of an API call to indicate an OOM error +** Take actions at the end of an API call to deal with error codes. */ -static SQLITE_NOINLINE int apiOomError(sqlite3 *db){ - sqlite3OomClear(db); - sqlite3Error(db, SQLITE_NOMEM); - return SQLITE_NOMEM_BKPT; +static SQLITE_NOINLINE int apiHandleError(sqlite3 *db, int rc){ + if( db->mallocFailed || rc==SQLITE_IOERR_NOMEM ){ + sqlite3OomClear(db); + sqlite3Error(db, SQLITE_NOMEM); + return SQLITE_NOMEM_BKPT; + } + return rc & db->errMask; } /* -** This function must be called before exiting any API function (i.e. +** This function must be called before exiting any API function (i.e. ** returning control to the user) that has called sqlite3_malloc or ** sqlite3_realloc. ** ** The returned value is normally a copy of the second argument to this ** function. However, if a malloc() failure has occurred since the previous -** invocation SQLITE_NOMEM is returned instead. +** invocation SQLITE_NOMEM is returned instead. ** ** If an OOM as occurred, then the connection error-code (the value ** returned by sqlite3_errcode()) is set to SQLITE_NOMEM. */ SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){ /* If the db handle must hold the connection handle mutex here. - ** Otherwise the read (and possible write) of db->mallocFailed + ** Otherwise the read (and possible write) of db->mallocFailed ** is unsafe, as is the call to sqlite3Error(). */ assert( db!=0 ); assert( sqlite3_mutex_held(db->mutex) ); - if( db->mallocFailed || rc==SQLITE_IOERR_NOMEM ){ - return apiOomError(db); + if( db->mallocFailed || rc ){ + return apiHandleError(db, rc); } return rc & db->errMask; } @@ -26602,7 +30441,7 @@ SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){ /************** Begin file printf.c ******************************************/ /* ** The "printf" code that follows dates from the 1980's. It is in -** the public domain. +** the public domain. ** ************************************************************************** ** @@ -26631,7 +30470,7 @@ SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){ #define etSQLESCAPE2 10 /* Strings with '\'' doubled and enclosed in '', NULL pointers replaced by SQL NULL. %Q */ #define etTOKEN 11 /* a pointer to a Token structure */ -#define etSRCLIST 12 /* a pointer to a SrcList */ +#define etSRCITEM 12 /* a pointer to a SrcItem */ #define etPOINTER 13 /* The %p conversion */ #define etSQLESCAPE3 14 /* %w -> Strings with '\"' doubled */ #define etORDINAL 15 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */ @@ -26697,48 +30536,24 @@ static const et_info fmtinfo[] = { /* All the rest are undocumented and are for internal use only */ { 'T', 0, 0, etTOKEN, 0, 0 }, - { 'S', 0, 0, etSRCLIST, 0, 0 }, + { 'S', 0, 0, etSRCITEM, 0, 0 }, { 'r', 10, 1, etORDINAL, 0, 0 }, }; -/* -** If SQLITE_OMIT_FLOATING_POINT is defined, then none of the floating point -** conversions will work. -*/ -#ifndef SQLITE_OMIT_FLOATING_POINT -/* -** "*val" is a double such that 0.1 <= *val < 10.0 -** Return the ascii code for the leading digit of *val, then -** multiply "*val" by 10.0 to renormalize. +/* Notes: ** -** Example: -** input: *val = 3.14159 -** output: *val = 1.4159 function return = '3' -** -** The counter *cnt is incremented each time. After counter exceeds -** 16 (the number of significant digits in a 64-bit float) '0' is -** always returned. +** %S Takes a pointer to SrcItem. Shows name or database.name +** %!S Like %S but prefer the zName over the zAlias */ -static char et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ - int digit; - LONGDOUBLE_TYPE d; - if( (*cnt)<=0 ) return '0'; - (*cnt)--; - digit = (int)*val; - d = digit; - digit += '0'; - *val = (*val - d)*10.0; - return (char)digit; -} -#endif /* SQLITE_OMIT_FLOATING_POINT */ /* ** Set the StrAccum object to an error mode. */ -static void setStrAccumError(StrAccum *p, u8 eError){ +SQLITE_PRIVATE void sqlite3StrAccumSetError(StrAccum *p, u8 eError){ assert( eError==SQLITE_NOMEM || eError==SQLITE_TOOBIG ); p->accError = eError; - p->nAlloc = 0; + if( p->mxAlloc ) sqlite3_str_reset(p); + if( eError==SQLITE_TOOBIG ) sqlite3ErrorToParser(p->db, eError); } /* @@ -26757,6 +30572,28 @@ static char *getTextArg(PrintfArguments *p){ return (char*)sqlite3_value_text(p->apArg[p->nUsed++]); } +/* +** Allocate memory for a temporary buffer needed for printf rendering. +** +** If the requested size of the temp buffer is larger than the size +** of the output buffer in pAccum, then cause an SQLITE_TOOBIG error. +** Do the size check before the memory allocation to prevent rogue +** SQL from requesting large allocations using the precision or width +** field of the printf() function. +*/ +static char *printfTempBuf(sqlite3_str *pAccum, sqlite3_int64 n){ + char *z; + if( pAccum->accError ) return 0; + if( n>pAccum->nAlloc && n>pAccum->mxAlloc ){ + sqlite3StrAccumSetError(pAccum, SQLITE_TOOBIG); + return 0; + } + z = sqlite3DbMallocRaw(pAccum->db, n); + if( z==0 ){ + sqlite3StrAccumSetError(pAccum, SQLITE_NOMEM); + } + return z; +} /* ** On machines with a small stack size, you can redefine the @@ -26767,6 +30604,13 @@ static char *getTextArg(PrintfArguments *p){ #endif #define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ +/* +** Hard limit on the precision of floating-point conversions. +*/ +#ifndef SQLITE_PRINTF_PRECISION_LIMIT +# define SQLITE_FP_PRECISION_LIMIT 100000000 +#endif + /* ** Render a string given by "fmt" into the StrAccum object. */ @@ -26793,22 +30637,19 @@ SQLITE_API void sqlite3_str_vappendf( u8 bArgList; /* True for SQLITE_PRINTF_SQLFUNC */ char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */ sqlite_uint64 longvalue; /* Value for integer types */ - LONGDOUBLE_TYPE realvalue; /* Value for real types */ + double realvalue; /* Value for real types */ const et_info *infop; /* Pointer to the appropriate info structure */ char *zOut; /* Rendering buffer */ int nOut; /* Size of the rendering buffer */ char *zExtra = 0; /* Malloced memory used by some conversion */ -#ifndef SQLITE_OMIT_FLOATING_POINT - int exp, e2; /* exponent of real numbers */ - int nsd; /* Number of significant digits returned */ - double rounder; /* Used for rounding floating point values */ + int exp, e2; /* exponent of real numbers */ etByte flag_dp; /* True if decimal point should be shown */ etByte flag_rtz; /* True if trailing zeros should be removed */ -#endif + PrintfArguments *pArgList = 0; /* Arguments for SQLITE_PRINTF_SQLFUNC */ char buf[etBUFSIZE]; /* Conversion buffer */ - /* pAccum never starts out with an empty buffer that was obtained from + /* pAccum never starts out with an empty buffer that was obtained from ** malloc(). This precondition is required by the mprintf("%z...") ** optimization. */ assert( pAccum->nChar>0 || (pAccum->printfFlags&SQLITE_PRINTF_MALLOCED)==0 ); @@ -26839,6 +30680,9 @@ SQLITE_API void sqlite3_str_vappendf( flag_leftjustify = flag_prefix = cThousand = flag_alternateform = flag_altform2 = flag_zeropad = 0; done = 0; + width = 0; + flag_long = 0; + precision = -1; do{ switch( c ){ case '-': flag_leftjustify = 1; break; @@ -26849,80 +30693,93 @@ SQLITE_API void sqlite3_str_vappendf( case '0': flag_zeropad = 1; break; case ',': cThousand = ','; break; default: done = 1; break; + case 'l': { + flag_long = 1; + c = *++fmt; + if( c=='l' ){ + c = *++fmt; + flag_long = 2; + } + done = 1; + break; + } + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': { + unsigned wx = c - '0'; + while( (c = *++fmt)>='0' && c<='9' ){ + wx = wx*10 + c - '0'; + } + testcase( wx>0x7fffffff ); + width = wx & 0x7fffffff; +#ifdef SQLITE_PRINTF_PRECISION_LIMIT + if( width>SQLITE_PRINTF_PRECISION_LIMIT ){ + width = SQLITE_PRINTF_PRECISION_LIMIT; + } +#endif + if( c!='.' && c!='l' ){ + done = 1; + }else{ + fmt--; + } + break; + } + case '*': { + if( bArgList ){ + width = (int)getIntArg(pArgList); + }else{ + width = va_arg(ap,int); + } + if( width<0 ){ + flag_leftjustify = 1; + width = width >= -2147483647 ? -width : 0; + } +#ifdef SQLITE_PRINTF_PRECISION_LIMIT + if( width>SQLITE_PRINTF_PRECISION_LIMIT ){ + width = SQLITE_PRINTF_PRECISION_LIMIT; + } +#endif + if( (c = fmt[1])!='.' && c!='l' ){ + c = *++fmt; + done = 1; + } + break; + } + case '.': { + c = *++fmt; + if( c=='*' ){ + if( bArgList ){ + precision = (int)getIntArg(pArgList); + }else{ + precision = va_arg(ap,int); + } + if( precision<0 ){ + precision = precision >= -2147483647 ? -precision : -1; + } + c = *++fmt; + }else{ + unsigned px = 0; + while( c>='0' && c<='9' ){ + px = px*10 + c - '0'; + c = *++fmt; + } + testcase( px>0x7fffffff ); + precision = px & 0x7fffffff; + } +#ifdef SQLITE_PRINTF_PRECISION_LIMIT + if( precision>SQLITE_PRINTF_PRECISION_LIMIT ){ + precision = SQLITE_PRINTF_PRECISION_LIMIT; + } +#endif + if( c=='l' ){ + --fmt; + }else{ + done = 1; + } + break; + } } }while( !done && (c=(*++fmt))!=0 ); - /* Get the field width */ - if( c=='*' ){ - if( bArgList ){ - width = (int)getIntArg(pArgList); - }else{ - width = va_arg(ap,int); - } - if( width<0 ){ - flag_leftjustify = 1; - width = width >= -2147483647 ? -width : 0; - } - c = *++fmt; - }else{ - unsigned wx = 0; - while( c>='0' && c<='9' ){ - wx = wx*10 + c - '0'; - c = *++fmt; - } - testcase( wx>0x7fffffff ); - width = wx & 0x7fffffff; - } - assert( width>=0 ); -#ifdef SQLITE_PRINTF_PRECISION_LIMIT - if( width>SQLITE_PRINTF_PRECISION_LIMIT ){ - width = SQLITE_PRINTF_PRECISION_LIMIT; - } -#endif - /* Get the precision */ - if( c=='.' ){ - c = *++fmt; - if( c=='*' ){ - if( bArgList ){ - precision = (int)getIntArg(pArgList); - }else{ - precision = va_arg(ap,int); - } - c = *++fmt; - if( precision<0 ){ - precision = precision >= -2147483647 ? -precision : -1; - } - }else{ - unsigned px = 0; - while( c>='0' && c<='9' ){ - px = px*10 + c - '0'; - c = *++fmt; - } - testcase( px>0x7fffffff ); - precision = px & 0x7fffffff; - } - }else{ - precision = -1; - } - assert( precision>=(-1) ); -#ifdef SQLITE_PRINTF_PRECISION_LIMIT - if( precision>SQLITE_PRINTF_PRECISION_LIMIT ){ - precision = SQLITE_PRINTF_PRECISION_LIMIT; - } -#endif - - - /* Get the conversion type modifier */ - if( c=='l' ){ - flag_long = 1; - c = *++fmt; - if( c=='l' ){ - flag_long = 2; - c = *++fmt; - } - }else{ - flag_long = 0; - } /* Fetch the info entry for the field */ infop = &fmtinfo[0]; xtype = etINVALID; @@ -26951,15 +30808,17 @@ SQLITE_API void sqlite3_str_vappendf( ** xtype The class of the conversion. ** infop Pointer to the appropriate info struct. */ + assert( width>=0 ); + assert( precision>=(-1) ); switch( xtype ){ case etPOINTER: flag_long = sizeof(char*)==sizeof(i64) ? 2 : sizeof(char*)==sizeof(long int) ? 1 : 0; - /* Fall through into the next case */ + /* no break */ deliberate_fall_through case etORDINAL: - case etRADIX: + case etRADIX: cThousand = 0; - /* Fall through into the next case */ + /* no break */ deliberate_fall_through case etDECIMAL: if( infop->flags & FLAG_SIGNED ){ i64 v; @@ -26975,11 +30834,10 @@ SQLITE_API void sqlite3_str_vappendf( v = va_arg(ap,int); } if( v<0 ){ - if( v==SMALLEST_INT64 ){ - longvalue = ((u64)1)<<63; - }else{ - longvalue = -v; - } + testcase( v==SMALLEST_INT64 ); + testcase( v==(-1) ); + longvalue = ~v; + longvalue++; prefix = '-'; }else{ longvalue = v; @@ -27007,12 +30865,11 @@ SQLITE_API void sqlite3_str_vappendf( nOut = etBUFSIZE; zOut = buf; }else{ - u64 n = (u64)precision + 10 + precision/3; - zOut = zExtra = sqlite3Malloc( n ); - if( zOut==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - return; - } + u64 n; + n = (u64)precision + 10; + if( cThousand ) n += precision/3; + zOut = zExtra = printfTempBuf(pAccum, n); + if( zOut==0 ) return; nOut = (int)n; } bufpt = &zOut[nOut-1]; @@ -27063,58 +30920,66 @@ SQLITE_API void sqlite3_str_vappendf( break; case etFLOAT: case etEXP: - case etGENERIC: + case etGENERIC: { + FpDecode s; + int iRound; + int j; + if( bArgList ){ realvalue = getDoubleArg(pArgList); }else{ realvalue = va_arg(ap,double); } -#ifdef SQLITE_OMIT_FLOATING_POINT - length = 0; -#else if( precision<0 ) precision = 6; /* Set default precision */ - if( realvalue<0.0 ){ - realvalue = -realvalue; +#ifdef SQLITE_FP_PRECISION_LIMIT + if( precision>SQLITE_FP_PRECISION_LIMIT ){ + precision = SQLITE_FP_PRECISION_LIMIT; + } +#endif + if( xtype==etFLOAT ){ + iRound = -precision; + }else if( xtype==etGENERIC ){ + iRound = precision; + }else{ + iRound = precision+1; + } + sqlite3FpDecode(&s, realvalue, iRound, flag_altform2 ? 26 : 16); + if( s.isSpecial ){ + if( s.isSpecial==2 ){ + bufpt = flag_zeropad ? "null" : "NaN"; + length = sqlite3Strlen30(bufpt); + break; + }else if( flag_zeropad ){ + s.z[0] = '9'; + s.iDP = 1000; + s.n = 1; + }else{ + memcpy(buf, "-Inf", 5); + bufpt = buf; + if( s.sign=='-' ){ + /* no-op */ + }else if( flag_prefix ){ + buf[0] = flag_prefix; + }else{ + bufpt++; + } + length = sqlite3Strlen30(bufpt); + break; + } + } + if( s.sign=='-' ){ prefix = '-'; }else{ prefix = flag_prefix; } + + exp = s.iDP-1; if( xtype==etGENERIC && precision>0 ) precision--; - testcase( precision>0xfff ); - for(idx=precision&0xfff, rounder=0.5; idx>0; idx--, rounder*=0.1){} - if( xtype==etFLOAT ) realvalue += rounder; - /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ - exp = 0; - if( sqlite3IsNaN((double)realvalue) ){ - bufpt = "NaN"; - length = 3; - break; - } - if( realvalue>0.0 ){ - LONGDOUBLE_TYPE scale = 1.0; - while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;} - while( realvalue>=1e10*scale && exp<=350 ){ scale *= 1e10; exp+=10; } - while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; } - realvalue /= scale; - while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } - while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } - if( exp>350 ){ - bufpt = buf; - buf[0] = prefix; - memcpy(buf+(prefix!=0),"Inf",4); - length = 3+(prefix!=0); - break; - } - } - bufpt = buf; + /* ** If the field type is etGENERIC, then convert to either etEXP ** or etFLOAT, as appropriate. */ - if( xtype!=etFLOAT ){ - realvalue += rounder; - if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; } - } if( xtype==etGENERIC ){ flag_rtz = !flag_alternateform; if( exp<-4 || exp>precision ){ @@ -27129,29 +30994,32 @@ SQLITE_API void sqlite3_str_vappendf( if( xtype==etEXP ){ e2 = 0; }else{ - e2 = exp; + e2 = s.iDP - 1; } - if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){ - bufpt = zExtra - = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 ); - if( bufpt==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - return; + bufpt = buf; + { + i64 szBufNeeded; /* Size of a temporary buffer needed */ + szBufNeeded = MAX(e2,0)+(i64)precision+(i64)width+15; + if( cThousand && e2>0 ) szBufNeeded += (e2+2)/3; + if( szBufNeeded > etBUFSIZE ){ + bufpt = zExtra = printfTempBuf(pAccum, szBufNeeded); + if( bufpt==0 ) return; } } zOut = bufpt; - nsd = 16 + flag_altform2*10; flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2; /* The sign in front of the number */ if( prefix ){ *(bufpt++) = prefix; } /* Digits prior to the decimal point */ + j = 0; if( e2<0 ){ *(bufpt++) = '0'; }else{ for(; e2>=0; e2--){ - *(bufpt++) = et_getdigit(&realvalue,&nsd); + *(bufpt++) = j1 ) *(bufpt++) = ','; } } /* The decimal point */ @@ -27160,13 +31028,12 @@ SQLITE_API void sqlite3_str_vappendf( } /* "0" digits after the decimal point but before the first ** significant digit of the number */ - for(e2++; e2<0; precision--, e2++){ - assert( precision>0 ); + for(e2++; e2<0 && precision>0; precision--, e2++){ *(bufpt++) = '0'; } /* Significant digits after the decimal point */ while( (precision--)>0 ){ - *(bufpt++) = et_getdigit(&realvalue,&nsd); + *(bufpt++) = jcharset]; if( exp<0 ){ *(bufpt++) = '-'; exp = -exp; @@ -27215,8 +31083,8 @@ SQLITE_API void sqlite3_str_vappendf( while( nPad-- ) bufpt[i++] = '0'; length = width; } -#endif /* !defined(SQLITE_OMIT_FLOATING_POINT) */ break; + } case etSIZE: if( !bArgList ){ *(va_arg(ap,int*)) = pAccum->nChar; @@ -27265,13 +31133,26 @@ SQLITE_API void sqlite3_str_vappendf( } } if( precision>1 ){ + i64 nPrior = 1; width -= precision-1; if( width>1 && !flag_leftjustify ){ sqlite3_str_appendchar(pAccum, width-1, ' '); width = 0; } - while( precision-- > 1 ){ - sqlite3_str_append(pAccum, buf, length); + sqlite3_str_append(pAccum, buf, length); + precision--; + while( precision > 1 ){ + i64 nCopyBytes; + if( nPrior > precision-1 ) nPrior = precision - 1; + nCopyBytes = length*nPrior; + if( nCopyBytes + pAccum->nChar >= pAccum->nAlloc ){ + sqlite3StrAccumEnlarge(pAccum, nCopyBytes); + } + if( pAccum->accError ) break; + sqlite3_str_append(pAccum, + &pAccum->zText[pAccum->nChar-nCopyBytes], nCopyBytes); + precision -= nPrior; + nPrior *= 2; } } bufpt = buf; @@ -27288,7 +31169,12 @@ SQLITE_API void sqlite3_str_vappendf( if( bufpt==0 ){ bufpt = ""; }else if( xtype==etDYNSTRING ){ - if( pAccum->nChar==0 && pAccum->mxAlloc && width==0 && precision<0 ){ + if( pAccum->nChar==0 + && pAccum->mxAlloc + && width==0 + && precision<0 + && pAccum->accError==0 + ){ /* Special optimization for sqlite3_mprintf("%z..."): ** Extend an existing memory allocation rather than creating ** a new one. */ @@ -27327,8 +31213,8 @@ SQLITE_API void sqlite3_str_vappendf( case etSQLESCAPE: /* %q: Escape ' characters */ case etSQLESCAPE2: /* %Q: Escape ' and enclose in '...' */ case etSQLESCAPE3: { /* %w: Escape " characters */ - int i, j, k, n, isnull; - int needQuote; + i64 i, j, k, n; + int needQuote, isnull; char ch; char q = ((xtype==etSQLESCAPE3)?'"':'\''); /* Quote character */ char *escarg; @@ -27340,7 +31226,7 @@ SQLITE_API void sqlite3_str_vappendf( } isnull = escarg==0; if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)"); - /* For %q, %Q, and %w, the precision is the number of byte (or + /* For %q, %Q, and %w, the precision is the number of bytes (or ** characters if the ! flags is present) to use from the input. ** Because of the extra quoting characters inserted, the number ** of output characters may be larger than the precision. @@ -27355,11 +31241,8 @@ SQLITE_API void sqlite3_str_vappendf( needQuote = !isnull && xtype==etSQLESCAPE2; n += i + 3; if( n>etBUFSIZE ){ - bufpt = zExtra = sqlite3Malloc( n ); - if( bufpt==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - return; - } + bufpt = zExtra = printfTempBuf(pAccum, n); + if( bufpt==0 ) return; }else{ bufpt = buf; } @@ -27376,31 +31259,50 @@ SQLITE_API void sqlite3_str_vappendf( goto adjust_width_for_utf8; } case etTOKEN: { - Token *pToken; if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; - pToken = va_arg(ap, Token*); - assert( bArgList==0 ); - if( pToken && pToken->n ){ - sqlite3_str_append(pAccum, (const char*)pToken->z, pToken->n); + if( flag_alternateform ){ + /* %#T means an Expr pointer that uses Expr.u.zToken */ + Expr *pExpr = va_arg(ap,Expr*); + if( ALWAYS(pExpr) && ALWAYS(!ExprHasProperty(pExpr,EP_IntValue)) ){ + sqlite3_str_appendall(pAccum, (const char*)pExpr->u.zToken); + sqlite3RecordErrorOffsetOfExpr(pAccum->db, pExpr); + } + }else{ + /* %T means a Token pointer */ + Token *pToken = va_arg(ap, Token*); + assert( bArgList==0 ); + if( pToken && pToken->n ){ + sqlite3_str_append(pAccum, (const char*)pToken->z, pToken->n); + sqlite3RecordErrorByteOffset(pAccum->db, pToken->z); + } } length = width = 0; break; } - case etSRCLIST: { - SrcList *pSrc; - int k; - struct SrcList_item *pItem; + case etSRCITEM: { + SrcItem *pItem; if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; - pSrc = va_arg(ap, SrcList*); - k = va_arg(ap, int); - pItem = &pSrc->a[k]; + pItem = va_arg(ap, SrcItem*); assert( bArgList==0 ); - assert( k>=0 && knSrc ); - if( pItem->zDatabase ){ - sqlite3_str_appendall(pAccum, pItem->zDatabase); - sqlite3_str_append(pAccum, ".", 1); + if( pItem->zAlias && !flag_altform2 ){ + sqlite3_str_appendall(pAccum, pItem->zAlias); + }else if( pItem->zName ){ + if( pItem->zDatabase ){ + sqlite3_str_appendall(pAccum, pItem->zDatabase); + sqlite3_str_append(pAccum, ".", 1); + } + sqlite3_str_appendall(pAccum, pItem->zName); + }else if( pItem->zAlias ){ + sqlite3_str_appendall(pAccum, pItem->zAlias); + }else{ + Select *pSel = pItem->pSelect; + assert( pSel!=0 ); + if( pSel->selFlags & SF_NestedFrom ){ + sqlite3_str_appendf(pAccum, "(join-%u)", pSel->selId); + }else{ + sqlite3_str_appendf(pAccum, "(subquery-%u)", pSel->selId); + } } - sqlite3_str_appendall(pAccum, pItem->zName); length = width = 0; break; } @@ -27433,6 +31335,44 @@ SQLITE_API void sqlite3_str_vappendf( }/* End for loop over the format string */ } /* End of function */ + +/* +** The z string points to the first character of a token that is +** associated with an error. If db does not already have an error +** byte offset recorded, try to compute the error byte offset for +** z and set the error byte offset in db. +*/ +SQLITE_PRIVATE void sqlite3RecordErrorByteOffset(sqlite3 *db, const char *z){ + const Parse *pParse; + const char *zText; + const char *zEnd; + assert( z!=0 ); + if( NEVER(db==0) ) return; + if( db->errByteOffset!=(-2) ) return; + pParse = db->pParse; + if( NEVER(pParse==0) ) return; + zText =pParse->zTail; + if( NEVER(zText==0) ) return; + zEnd = &zText[strlen(zText)]; + if( SQLITE_WITHIN(z,zText,zEnd) ){ + db->errByteOffset = (int)(z-zText); + } +} + +/* +** If pExpr has a byte offset for the start of a token, record that as +** as the error offset. +*/ +SQLITE_PRIVATE void sqlite3RecordErrorOffsetOfExpr(sqlite3 *db, const Expr *pExpr){ + while( pExpr + && (ExprHasProperty(pExpr,EP_OuterON|EP_InnerON) || pExpr->w.iOfst<=0) + ){ + pExpr = pExpr->pLeft; + } + if( pExpr==0 ) return; + db->errByteOffset = pExpr->w.iOfst; +} + /* ** Enlarge the memory allocation on a StrAccum object so that it is ** able to accept at least N more bytes of text. @@ -27440,22 +31380,20 @@ SQLITE_API void sqlite3_str_vappendf( ** Return the number of bytes of text that StrAccum is able to accept ** after the attempted enlargement. The value returned might be zero. */ -static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ +SQLITE_PRIVATE int sqlite3StrAccumEnlarge(StrAccum *p, i64 N){ char *zNew; - assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */ + assert( p->nChar+N >= p->nAlloc ); /* Only called if really needed */ if( p->accError ){ testcase(p->accError==SQLITE_TOOBIG); testcase(p->accError==SQLITE_NOMEM); return 0; } if( p->mxAlloc==0 ){ - N = p->nAlloc - p->nChar - 1; - setStrAccumError(p, SQLITE_TOOBIG); - return N; + sqlite3StrAccumSetError(p, SQLITE_TOOBIG); + return p->nAlloc - p->nChar - 1; }else{ char *zOld = isMalloced(p) ? p->zText : 0; - i64 szNew = p->nChar; - szNew += N + 1; + i64 szNew = p->nChar + N + 1; if( szNew+p->nChar<=p->mxAlloc ){ /* Force exponential buffer size growth as long as it does not overflow, ** to avoid having to call this routine too often */ @@ -27463,7 +31401,7 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ } if( szNew > p->mxAlloc ){ sqlite3_str_reset(p); - setStrAccumError(p, SQLITE_TOOBIG); + sqlite3StrAccumSetError(p, SQLITE_TOOBIG); return 0; }else{ p->nAlloc = (int)szNew; @@ -27471,7 +31409,7 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ if( p->db ){ zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); }else{ - zNew = sqlite3_realloc64(zOld, p->nAlloc); + zNew = sqlite3Realloc(zOld, p->nAlloc); } if( zNew ){ assert( p->zText!=0 || p->nChar==0 ); @@ -27481,11 +31419,12 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ p->printfFlags |= SQLITE_PRINTF_MALLOCED; }else{ sqlite3_str_reset(p); - setStrAccumError(p, SQLITE_NOMEM); + sqlite3StrAccumSetError(p, SQLITE_NOMEM); return 0; } } - return N; + assert( N>=0 && N<=0x7fffffff ); + return (int)N; } /* @@ -27523,7 +31462,7 @@ SQLITE_API void sqlite3_str_append(sqlite3_str *p, const char *z, int N){ assert( z!=0 || N==0 ); assert( p->zText!=0 || p->nChar==0 || p->accError ); assert( N>=0 ); - assert( p->accError==0 || p->nAlloc==0 ); + assert( p->accError==0 || p->nAlloc==0 || p->mxAlloc==0 ); if( p->nChar+N >= p->nAlloc ){ enlargeAndAppend(p,z,N); }else if( N ){ @@ -27554,7 +31493,7 @@ static SQLITE_NOINLINE char *strAccumFinishRealloc(StrAccum *p){ memcpy(zText, p->zText, p->nChar+1); p->printfFlags |= SQLITE_PRINTF_MALLOCED; }else{ - setStrAccumError(p, SQLITE_NOMEM); + sqlite3StrAccumSetError(p, SQLITE_NOMEM); } p->zText = zText; return zText; @@ -27569,6 +31508,22 @@ SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){ return p->zText; } +/* +** Use the content of the StrAccum passed as the second argument +** as the result of an SQL function. +*/ +SQLITE_PRIVATE void sqlite3ResultStrAccum(sqlite3_context *pCtx, StrAccum *p){ + if( p->accError ){ + sqlite3_result_error_code(pCtx, p->accError); + sqlite3_str_reset(p); + }else if( isMalloced(p) ){ + sqlite3_result_text(pCtx, p->zText, p->nChar, SQLITE_DYNAMIC); + }else{ + sqlite3_result_text(pCtx, "", 0, SQLITE_STATIC); + sqlite3_str_reset(p); + } +} + /* ** This singleton is an sqlite3_str object that is returned if ** sqlite3_malloc() fails to provide space for a real one. This @@ -27700,7 +31655,7 @@ SQLITE_API char *sqlite3_vmprintf(const char *zFormat, va_list ap){ char zBase[SQLITE_PRINT_BUF_SIZE]; StrAccum acc; -#ifdef SQLITE_ENABLE_API_ARMOR +#ifdef SQLITE_ENABLE_API_ARMOR if( zFormat==0 ){ (void)SQLITE_MISUSE_BKPT; return 0; @@ -27760,12 +31715,22 @@ SQLITE_API char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_li return zBuf; } SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ - char *z; + StrAccum acc; va_list ap; + if( n<=0 ) return zBuf; +#ifdef SQLITE_ENABLE_API_ARMOR + if( zBuf==0 || zFormat==0 ) { + (void)SQLITE_MISUSE_BKPT; + if( zBuf ) zBuf[0] = 0; + return zBuf; + } +#endif + sqlite3StrAccumInit(&acc, 0, zBuf, n, 0); va_start(ap,zFormat); - z = sqlite3_vsnprintf(n, zBuf, zFormat, ap); + sqlite3_str_vappendf(&acc, zFormat, ap); va_end(ap); - return z; + zBuf[acc.nChar] = 0; + return zBuf; } /* @@ -27813,7 +31778,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...){ SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){ va_list ap; StrAccum acc; - char zBuf[500]; + char zBuf[SQLITE_PRINT_BUF_SIZE*10]; sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); va_start(ap,zFormat); sqlite3_str_vappendf(&acc, zFormat, ap); @@ -27843,6 +31808,75 @@ SQLITE_API void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){ va_end(ap); } + +/***************************************************************************** +** Reference counted string storage +*****************************************************************************/ + +/* +** Increase the reference count of the string by one. +** +** The input parameter is returned. +*/ +SQLITE_PRIVATE char *sqlite3RCStrRef(char *z){ + RCStr *p = (RCStr*)z; + assert( p!=0 ); + p--; + p->nRCRef++; + return z; +} + +/* +** Decrease the reference count by one. Free the string when the +** reference count reaches zero. +*/ +SQLITE_PRIVATE void sqlite3RCStrUnref(char *z){ + RCStr *p = (RCStr*)z; + assert( p!=0 ); + p--; + assert( p->nRCRef>0 ); + if( p->nRCRef>=2 ){ + p->nRCRef--; + }else{ + sqlite3_free(p); + } +} + +/* +** Create a new string that is capable of holding N bytes of text, not counting +** the zero byte at the end. The string is uninitialized. +** +** The reference count is initially 1. Call sqlite3RCStrUnref() to free the +** newly allocated string. +** +** This routine returns 0 on an OOM. +*/ +SQLITE_PRIVATE char *sqlite3RCStrNew(u64 N){ + RCStr *p = sqlite3_malloc64( N + sizeof(*p) + 1 ); + if( p==0 ) return 0; + p->nRCRef = 1; + return (char*)&p[1]; +} + +/* +** Change the size of the string so that it is able to hold N bytes. +** The string might be reallocated, so return the new allocation. +*/ +SQLITE_PRIVATE char *sqlite3RCStrResize(char *z, u64 N){ + RCStr *p = (RCStr*)z; + RCStr *pNew; + assert( p!=0 ); + p--; + assert( p->nRCRef==1 ); + pNew = sqlite3_realloc64(p, N+sizeof(RCStr)+1); + if( pNew==0 ){ + sqlite3_free(p); + return 0; + }else{ + return (char*)&pNew[1]; + } +} + /************** End of printf.c **********************************************/ /************** Begin file treeview.c ****************************************/ /* @@ -27859,7 +31893,7 @@ SQLITE_API void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){ ** ** This file contains C code to implement the TreeView debugging routines. ** These routines print a parse tree to standard output for debugging and -** analysis. +** analysis. ** ** The interfaces in this file is only available when compiling ** with SQLITE_DEBUG. @@ -27871,40 +31905,44 @@ SQLITE_API void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){ ** Add a new subitem to the tree. The moreToFollow flag indicates that this ** is not the last item in the tree. */ -static TreeView *sqlite3TreeViewPush(TreeView *p, u8 moreToFollow){ +static void sqlite3TreeViewPush(TreeView **pp, u8 moreToFollow){ + TreeView *p = *pp; if( p==0 ){ - p = sqlite3_malloc64( sizeof(*p) ); - if( p==0 ) return 0; + *pp = p = sqlite3_malloc64( sizeof(*p) ); + if( p==0 ) return; memset(p, 0, sizeof(*p)); }else{ p->iLevel++; } assert( moreToFollow==0 || moreToFollow==1 ); - if( p->iLevelbLine) ) p->bLine[p->iLevel] = moreToFollow; - return p; + if( p->iLevel<(int)sizeof(p->bLine) ) p->bLine[p->iLevel] = moreToFollow; } /* ** Finished with one layer of the tree */ -static void sqlite3TreeViewPop(TreeView *p){ +static void sqlite3TreeViewPop(TreeView **pp){ + TreeView *p = *pp; if( p==0 ) return; p->iLevel--; - if( p->iLevel<0 ) sqlite3_free(p); + if( p->iLevel<0 ){ + sqlite3_free(p); + *pp = 0; + } } /* ** Generate a single line of output for the tree, with a prefix that contains ** all the appropriate tree lines */ -static void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ +SQLITE_PRIVATE void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ va_list ap; int i; StrAccum acc; - char zBuf[500]; + char zBuf[1000]; sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); if( p ){ - for(i=0; iiLevel && ibLine)-1; i++){ + for(i=0; iiLevel && i<(int)sizeof(p->bLine)-1; i++){ sqlite3_str_append(&acc, p->bLine[i] ? "| " : " ", 4); } sqlite3_str_append(&acc, p->bLine[i] ? "|-- " : "'-- ", 4); @@ -27913,7 +31951,7 @@ static void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ va_start(ap, zFormat); sqlite3_str_vappendf(&acc, zFormat, ap); va_end(ap); - assert( acc.nChar>0 ); + assert( acc.nChar>0 || acc.accError ); sqlite3_str_append(&acc, "\n", 1); } sqlite3StrAccumFinish(&acc); @@ -27925,10 +31963,57 @@ static void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ ** Shorthand for starting a new tree item that consists of a single label */ static void sqlite3TreeViewItem(TreeView *p, const char *zLabel,u8 moreFollows){ - p = sqlite3TreeViewPush(p, moreFollows); + sqlite3TreeViewPush(&p, moreFollows); sqlite3TreeViewLine(p, "%s", zLabel); } +/* +** Show a list of Column objects in tree format. +*/ +SQLITE_PRIVATE void sqlite3TreeViewColumnList( + TreeView *pView, + const Column *aCol, + int nCol, + u8 moreToFollow +){ + int i; + sqlite3TreeViewPush(&pView, moreToFollow); + sqlite3TreeViewLine(pView, "COLUMNS"); + for(i=0; inCte>0 ){ - pView = sqlite3TreeViewPush(pView, 1); + sqlite3TreeViewPush(&pView, moreToFollow); for(i=0; inCte; i++){ StrAccum x; char zLine[1000]; @@ -27953,21 +32038,97 @@ SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 m char cSep = '('; int j; for(j=0; jpCols->nExpr; j++){ - sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zName); + sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zEName); cSep = ','; } sqlite3_str_appendf(&x, ")"); } - sqlite3_str_appendf(&x, " AS"); + if( pCte->eM10d!=M10d_Any ){ + sqlite3_str_appendf(&x, " %sMATERIALIZED", + pCte->eM10d==M10d_No ? "NOT " : ""); + } + if( pCte->pUse ){ + sqlite3_str_appendf(&x, " (pUse=0x%p, nUse=%d)", pCte->pUse, + pCte->pUse->nUse); + } sqlite3StrAccumFinish(&x); sqlite3TreeViewItem(pView, zLine, inCte-1); sqlite3TreeViewSelect(pView, pCte->pSelect, 0); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } } +/* +** Generate a human-readable description of a SrcList object. +*/ +SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc){ + int i; + if( pSrc==0 ) return; + for(i=0; inSrc; i++){ + const SrcItem *pItem = &pSrc->a[i]; + StrAccum x; + int n = 0; + char zLine[1000]; + sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); + x.printfFlags |= SQLITE_PRINTF_INTERNAL; + sqlite3_str_appendf(&x, "{%d:*} %!S", pItem->iCursor, pItem); + if( pItem->pTab ){ + sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p used=%llx", + pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab, pItem->colUsed); + } + if( (pItem->fg.jointype & (JT_LEFT|JT_RIGHT))==(JT_LEFT|JT_RIGHT) ){ + sqlite3_str_appendf(&x, " FULL-OUTER-JOIN"); + }else if( pItem->fg.jointype & JT_LEFT ){ + sqlite3_str_appendf(&x, " LEFT-JOIN"); + }else if( pItem->fg.jointype & JT_RIGHT ){ + sqlite3_str_appendf(&x, " RIGHT-JOIN"); + }else if( pItem->fg.jointype & JT_CROSS ){ + sqlite3_str_appendf(&x, " CROSS-JOIN"); + } + if( pItem->fg.jointype & JT_LTORJ ){ + sqlite3_str_appendf(&x, " LTORJ"); + } + if( pItem->fg.fromDDL ){ + sqlite3_str_appendf(&x, " DDL"); + } + if( pItem->fg.isCte ){ + sqlite3_str_appendf(&x, " CteUse=0x%p", pItem->u2.pCteUse); + } + if( pItem->fg.isOn || (pItem->fg.isUsing==0 && pItem->u3.pOn!=0) ){ + sqlite3_str_appendf(&x, " ON"); + } + if( pItem->fg.isTabFunc ) sqlite3_str_appendf(&x, " isTabFunc"); + if( pItem->fg.isCorrelated ) sqlite3_str_appendf(&x, " isCorrelated"); + if( pItem->fg.isMaterialized ) sqlite3_str_appendf(&x, " isMaterialized"); + if( pItem->fg.viaCoroutine ) sqlite3_str_appendf(&x, " viaCoroutine"); + if( pItem->fg.notCte ) sqlite3_str_appendf(&x, " notCte"); + if( pItem->fg.isNestedFrom ) sqlite3_str_appendf(&x, " isNestedFrom"); + + sqlite3StrAccumFinish(&x); + sqlite3TreeViewItem(pView, zLine, inSrc-1); + n = 0; + if( pItem->pSelect ) n++; + if( pItem->fg.isTabFunc ) n++; + if( pItem->fg.isUsing ) n++; + if( pItem->fg.isUsing ){ + sqlite3TreeViewIdList(pView, pItem->u3.pUsing, (--n)>0, "USING"); + } + if( pItem->pSelect ){ + if( pItem->pTab ){ + Table *pTab = pItem->pTab; + sqlite3TreeViewColumnList(pView, pTab->aCol, pTab->nCol, 1); + } + assert( (int)pItem->fg.isNestedFrom == IsNestedFrom(pItem->pSelect) ); + sqlite3TreeViewSelect(pView, pItem->pSelect, (--n)>0); + } + if( pItem->fg.isTabFunc ){ + sqlite3TreeViewExprList(pView, pItem->u1.pFuncArg, 0, "func-args:"); + } + sqlite3TreeViewPop(&pView); + } +} /* ** Generate a human-readable description of a Select object. @@ -27978,30 +32139,26 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m if( p==0 ){ sqlite3TreeViewLine(pView, "nil-SELECT"); return; - } - pView = sqlite3TreeViewPush(pView, moreToFollow); + } + sqlite3TreeViewPush(&pView, moreToFollow); if( p->pWith ){ sqlite3TreeViewWith(pView, p->pWith, 1); cnt = 1; - sqlite3TreeViewPush(pView, 1); + sqlite3TreeViewPush(&pView, 1); } do{ -#if SELECTTRACE_ENABLED - sqlite3TreeViewLine(pView, - "SELECT%s%s (%s/%p) selFlags=0x%x nSelectRow=%d", - ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), - ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), - p->zSelName, p, p->selFlags, - (int)p->nSelectRow - ); -#else - sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x nSelectRow=%d", - ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), - ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags, - (int)p->nSelectRow - ); -#endif - if( cnt++ ) sqlite3TreeViewPop(pView); + if( p->selFlags & SF_WhereBegin ){ + sqlite3TreeViewLine(pView, "sqlite3WhereBegin()"); + }else{ + sqlite3TreeViewLine(pView, + "SELECT%s%s (%u/%p) selFlags=0x%x nSelectRow=%d", + ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), + ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), + p->selId, p, p->selFlags, + (int)p->nSelectRow + ); + } + if( cnt++ ) sqlite3TreeViewPop(&pView); if( p->pPrior ){ n = 1000; }else{ @@ -28012,48 +32169,36 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m if( p->pHaving ) n++; if( p->pOrderBy ) n++; if( p->pLimit ) n++; +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWin ) n++; + if( p->pWinDefn ) n++; +#endif } - sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set"); - if( p->pSrc && p->pSrc->nSrc ){ - int i; - pView = sqlite3TreeViewPush(pView, (n--)>0); - sqlite3TreeViewLine(pView, "FROM"); - for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - StrAccum x; - char zLine[100]; - sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); - sqlite3_str_appendf(&x, "{%d,*}", pItem->iCursor); - if( pItem->zDatabase ){ - sqlite3_str_appendf(&x, " %s.%s", pItem->zDatabase, pItem->zName); - }else if( pItem->zName ){ - sqlite3_str_appendf(&x, " %s", pItem->zName); - } - if( pItem->pTab ){ - sqlite3_str_appendf(&x, " tabname=%Q", pItem->pTab->zName); - } - if( pItem->zAlias ){ - sqlite3_str_appendf(&x, " (AS %s)", pItem->zAlias); - } - if( pItem->fg.jointype & JT_LEFT ){ - sqlite3_str_appendf(&x, " LEFT-JOIN"); - } - sqlite3StrAccumFinish(&x); - sqlite3TreeViewItem(pView, zLine, ipSrc->nSrc-1); - if( pItem->pSelect ){ - sqlite3TreeViewSelect(pView, pItem->pSelect, 0); - } - if( pItem->fg.isTabFunc ){ - sqlite3TreeViewExprList(pView, pItem->u1.pFuncArg, 0, "func-args:"); - } - sqlite3TreeViewPop(pView); + if( p->pEList ){ + sqlite3TreeViewExprList(pView, p->pEList, n>0, "result-set"); + } + n--; +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWin ){ + Window *pX; + sqlite3TreeViewPush(&pView, (n--)>0); + sqlite3TreeViewLine(pView, "window-functions"); + for(pX=p->pWin; pX; pX=pX->pNextWin){ + sqlite3TreeViewWinFunc(pView, pX, pX->pNextWin!=0); } - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); + } +#endif + if( p->pSrc && p->pSrc->nSrc ){ + sqlite3TreeViewPush(&pView, (n--)>0); + sqlite3TreeViewLine(pView, "FROM"); + sqlite3TreeViewSrcList(pView, p->pSrc); + sqlite3TreeViewPop(&pView); } if( p->pWhere ){ sqlite3TreeViewItem(pView, "WHERE", (n--)>0); sqlite3TreeViewExpr(pView, p->pWhere, 0); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } if( p->pGroupBy ){ sqlite3TreeViewExprList(pView, p->pGroupBy, (n--)>0, "GROUPBY"); @@ -28061,8 +32206,18 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m if( p->pHaving ){ sqlite3TreeViewItem(pView, "HAVING", (n--)>0); sqlite3TreeViewExpr(pView, p->pHaving, 0); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWinDefn ){ + Window *pX; + sqlite3TreeViewItem(pView, "WINDOW", (n--)>0); + for(pX=p->pWinDefn; pX; pX=pX->pNextWin){ + sqlite3TreeViewWindow(pView, pX, pX->pNextWin!=0); + } + sqlite3TreeViewPop(&pView); + } +#endif if( p->pOrderBy ){ sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY"); } @@ -28072,9 +32227,9 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m if( p->pLimit->pRight ){ sqlite3TreeViewItem(pView, "OFFSET", (n--)>0); sqlite3TreeViewExpr(pView, p->pLimit->pRight, 0); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } if( p->pPrior ){ const char *zOp = "UNION"; @@ -28087,29 +32242,160 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m } p = p->pPrior; }while( p!=0 ); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** Generate a description of starting or stopping bounds +*/ +SQLITE_PRIVATE void sqlite3TreeViewBound( + TreeView *pView, /* View context */ + u8 eBound, /* UNBOUNDED, CURRENT, PRECEDING, FOLLOWING */ + Expr *pExpr, /* Value for PRECEDING or FOLLOWING */ + u8 moreToFollow /* True if more to follow */ +){ + switch( eBound ){ + case TK_UNBOUNDED: { + sqlite3TreeViewItem(pView, "UNBOUNDED", moreToFollow); + sqlite3TreeViewPop(&pView); + break; + } + case TK_CURRENT: { + sqlite3TreeViewItem(pView, "CURRENT", moreToFollow); + sqlite3TreeViewPop(&pView); + break; + } + case TK_PRECEDING: { + sqlite3TreeViewItem(pView, "PRECEDING", moreToFollow); + sqlite3TreeViewExpr(pView, pExpr, 0); + sqlite3TreeViewPop(&pView); + break; + } + case TK_FOLLOWING: { + sqlite3TreeViewItem(pView, "FOLLOWING", moreToFollow); + sqlite3TreeViewExpr(pView, pExpr, 0); + sqlite3TreeViewPop(&pView); + break; + } + } +} +#endif /* SQLITE_OMIT_WINDOWFUNC */ + +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** Generate a human-readable explanation for a Window object +*/ +SQLITE_PRIVATE void sqlite3TreeViewWindow(TreeView *pView, const Window *pWin, u8 more){ + int nElement = 0; + if( pWin==0 ) return; + if( pWin->pFilter ){ + sqlite3TreeViewItem(pView, "FILTER", 1); + sqlite3TreeViewExpr(pView, pWin->pFilter, 0); + sqlite3TreeViewPop(&pView); + } + sqlite3TreeViewPush(&pView, more); + if( pWin->zName ){ + sqlite3TreeViewLine(pView, "OVER %s (%p)", pWin->zName, pWin); + }else{ + sqlite3TreeViewLine(pView, "OVER (%p)", pWin); + } + if( pWin->zBase ) nElement++; + if( pWin->pOrderBy ) nElement++; + if( pWin->eFrmType ) nElement++; + if( pWin->eExclude ) nElement++; + if( pWin->zBase ){ + sqlite3TreeViewPush(&pView, (--nElement)>0); + sqlite3TreeViewLine(pView, "window: %s", pWin->zBase); + sqlite3TreeViewPop(&pView); + } + if( pWin->pPartition ){ + sqlite3TreeViewExprList(pView, pWin->pPartition, nElement>0,"PARTITION-BY"); + } + if( pWin->pOrderBy ){ + sqlite3TreeViewExprList(pView, pWin->pOrderBy, (--nElement)>0, "ORDER-BY"); + } + if( pWin->eFrmType ){ + char zBuf[30]; + const char *zFrmType = "ROWS"; + if( pWin->eFrmType==TK_RANGE ) zFrmType = "RANGE"; + if( pWin->eFrmType==TK_GROUPS ) zFrmType = "GROUPS"; + sqlite3_snprintf(sizeof(zBuf),zBuf,"%s%s",zFrmType, + pWin->bImplicitFrame ? " (implied)" : ""); + sqlite3TreeViewItem(pView, zBuf, (--nElement)>0); + sqlite3TreeViewBound(pView, pWin->eStart, pWin->pStart, 1); + sqlite3TreeViewBound(pView, pWin->eEnd, pWin->pEnd, 0); + sqlite3TreeViewPop(&pView); + } + if( pWin->eExclude ){ + char zBuf[30]; + const char *zExclude; + switch( pWin->eExclude ){ + case TK_NO: zExclude = "NO OTHERS"; break; + case TK_CURRENT: zExclude = "CURRENT ROW"; break; + case TK_GROUP: zExclude = "GROUP"; break; + case TK_TIES: zExclude = "TIES"; break; + default: + sqlite3_snprintf(sizeof(zBuf),zBuf,"invalid(%d)", pWin->eExclude); + zExclude = zBuf; + break; + } + sqlite3TreeViewPush(&pView, 0); + sqlite3TreeViewLine(pView, "EXCLUDE %s", zExclude); + sqlite3TreeViewPop(&pView); + } + sqlite3TreeViewPop(&pView); +} +#endif /* SQLITE_OMIT_WINDOWFUNC */ + +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** Generate a human-readable explanation for a Window Function object +*/ +SQLITE_PRIVATE void sqlite3TreeViewWinFunc(TreeView *pView, const Window *pWin, u8 more){ + if( pWin==0 ) return; + sqlite3TreeViewPush(&pView, more); + sqlite3TreeViewLine(pView, "WINFUNC %s(%d)", + pWin->pWFunc->zName, pWin->pWFunc->nArg); + sqlite3TreeViewWindow(pView, pWin, 0); + sqlite3TreeViewPop(&pView); +} +#endif /* SQLITE_OMIT_WINDOWFUNC */ + /* ** Generate a human-readable explanation of an expression tree. */ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){ const char *zBinOp = 0; /* Binary operator */ const char *zUniOp = 0; /* Unary operator */ - char zFlgs[60]; - pView = sqlite3TreeViewPush(pView, moreToFollow); + char zFlgs[200]; + sqlite3TreeViewPush(&pView, moreToFollow); if( pExpr==0 ){ sqlite3TreeViewLine(pView, "nil"); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); return; } - if( pExpr->flags ){ - if( ExprHasProperty(pExpr, EP_FromJoin) ){ - sqlite3_snprintf(sizeof(zFlgs),zFlgs," flags=0x%x iRJT=%d", - pExpr->flags, pExpr->iRightJoinTable); - }else{ - sqlite3_snprintf(sizeof(zFlgs),zFlgs," flags=0x%x",pExpr->flags); + if( pExpr->flags || pExpr->affExpr || pExpr->vvaFlags || pExpr->pAggInfo ){ + StrAccum x; + sqlite3StrAccumInit(&x, 0, zFlgs, sizeof(zFlgs), 0); + sqlite3_str_appendf(&x, " fg.af=%x.%c", + pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n'); + if( ExprHasProperty(pExpr, EP_OuterON) ){ + sqlite3_str_appendf(&x, " outer.iJoin=%d", pExpr->w.iJoin); } + if( ExprHasProperty(pExpr, EP_InnerON) ){ + sqlite3_str_appendf(&x, " inner.iJoin=%d", pExpr->w.iJoin); + } + if( ExprHasProperty(pExpr, EP_FromDDL) ){ + sqlite3_str_appendf(&x, " DDL"); + } + if( ExprHasVVAProperty(pExpr, EP_Immutable) ){ + sqlite3_str_appendf(&x, " IMMUTABLE"); + } + if( pExpr->pAggInfo!=0 ){ + sqlite3_str_appendf(&x, " agg-column[%d]", pExpr->iAgg); + } + sqlite3StrAccumFinish(&x); }else{ zFlgs[0] = 0; } @@ -28122,10 +32408,22 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m case TK_COLUMN: { if( pExpr->iTable<0 ){ /* This only happens when coding check constraints */ - sqlite3TreeViewLine(pView, "COLUMN(%d)%s", pExpr->iColumn, zFlgs); + char zOp2[16]; + if( pExpr->op2 ){ + sqlite3_snprintf(sizeof(zOp2),zOp2," op2=0x%02x",pExpr->op2); + }else{ + zOp2[0] = 0; + } + sqlite3TreeViewLine(pView, "COLUMN(%d)%s%s", + pExpr->iColumn, zFlgs, zOp2); }else{ - sqlite3TreeViewLine(pView, "{%d:%d}%s", - pExpr->iTable, pExpr->iColumn, zFlgs); + assert( ExprUseYTab(pExpr) ); + sqlite3TreeViewLine(pView, "{%d:%d} pTab=%p%s", + pExpr->iTable, pExpr->iColumn, + pExpr->y.pTab, zFlgs); + } + if( ExprHasProperty(pExpr, EP_FixedCol) ){ + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); } break; } @@ -28139,11 +32437,13 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m } #ifndef SQLITE_OMIT_FLOATING_POINT case TK_FLOAT: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"%s", pExpr->u.zToken); break; } #endif case TK_STRING: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"%Q", pExpr->u.zToken); break; } @@ -28152,17 +32452,19 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m break; } case TK_TRUEFALSE: { - sqlite3TreeViewLine(pView, - sqlite3ExprTruthValue(pExpr) ? "TRUE" : "FALSE"); + sqlite3TreeViewLine(pView,"%s%s", + sqlite3ExprTruthValue(pExpr) ? "TRUE" : "FALSE", zFlgs); break; } #ifndef SQLITE_OMIT_BLOB_LITERAL case TK_BLOB: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"%s", pExpr->u.zToken); break; } #endif case TK_VARIABLE: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"VARIABLE(%s,%d)", pExpr->u.zToken, pExpr->iColumn); break; @@ -28172,12 +32474,14 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m break; } case TK_ID: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"ID \"%w\"", pExpr->u.zToken); break; } #ifndef SQLITE_OMIT_CAST case TK_CAST: { /* Expressions of the form: CAST(pLeft AS token) */ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView,"CAST %Q", pExpr->u.zToken); sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); break; @@ -28204,6 +32508,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m case TK_RSHIFT: zBinOp = "RSHIFT"; break; case TK_CONCAT: zBinOp = "CONCAT"; break; case TK_DOT: zBinOp = "DOT"; break; + case TK_LIMIT: zBinOp = "LIMIT"; break; case TK_UMINUS: zUniOp = "UMINUS"; break; case TK_UPLUS: zUniOp = "UPLUS"; break; @@ -28219,20 +32524,30 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m }; assert( pExpr->op2==TK_IS || pExpr->op2==TK_ISNOT ); assert( pExpr->pRight ); - assert( pExpr->pRight->op==TK_TRUEFALSE ); + assert( sqlite3ExprSkipCollateAndLikely(pExpr->pRight)->op + == TK_TRUEFALSE ); x = (pExpr->op2==TK_ISNOT)*2 + sqlite3ExprTruthValue(pExpr->pRight); zUniOp = azOp[x]; break; } case TK_SPAN: { + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView, "SPAN %Q", pExpr->u.zToken); sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); break; } case TK_COLLATE: { - sqlite3TreeViewLine(pView, "COLLATE %Q", pExpr->u.zToken); + /* COLLATE operators without the EP_Collate flag are intended to + ** emulate collation associated with a table column. These show + ** up in the treeview output as "SOFT-COLLATE". Explicit COLLATE + ** operators that appear in the original SQL always have the + ** EP_Collate bit set and appear in treeview output as just "COLLATE" */ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + sqlite3TreeViewLine(pView, "%sCOLLATE %Q%s", + !ExprHasProperty(pExpr, EP_Collate) ? "SOFT-" : "", + pExpr->u.zToken, zFlgs); sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); break; } @@ -28240,37 +32555,76 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m case TK_AGG_FUNCTION: case TK_FUNCTION: { ExprList *pFarg; /* List of function arguments */ + Window *pWin; if( ExprHasProperty(pExpr, EP_TokenOnly) ){ pFarg = 0; + pWin = 0; }else{ + assert( ExprUseXList(pExpr) ); pFarg = pExpr->x.pList; +#ifndef SQLITE_OMIT_WINDOWFUNC + pWin = ExprHasProperty(pExpr, EP_WinFunc) ? pExpr->y.pWin : 0; +#else + pWin = 0; +#endif } + assert( !ExprHasProperty(pExpr, EP_IntValue) ); if( pExpr->op==TK_AGG_FUNCTION ){ - sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q", - pExpr->op2, pExpr->u.zToken); + sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q%s agg=%d[%d]/%p", + pExpr->op2, pExpr->u.zToken, zFlgs, + pExpr->pAggInfo ? pExpr->pAggInfo->selId : 0, + pExpr->iAgg, pExpr->pAggInfo); + }else if( pExpr->op2!=0 ){ + const char *zOp2; + char zBuf[8]; + sqlite3_snprintf(sizeof(zBuf),zBuf,"0x%02x",pExpr->op2); + zOp2 = zBuf; + if( pExpr->op2==NC_IsCheck ) zOp2 = "NC_IsCheck"; + if( pExpr->op2==NC_IdxExpr ) zOp2 = "NC_IdxExpr"; + if( pExpr->op2==NC_PartIdx ) zOp2 = "NC_PartIdx"; + if( pExpr->op2==NC_GenCol ) zOp2 = "NC_GenCol"; + sqlite3TreeViewLine(pView, "FUNCTION %Q%s op2=%s", + pExpr->u.zToken, zFlgs, zOp2); }else{ - sqlite3TreeViewLine(pView, "FUNCTION %Q", pExpr->u.zToken); + sqlite3TreeViewLine(pView, "FUNCTION %Q%s", pExpr->u.zToken, zFlgs); } if( pFarg ){ - sqlite3TreeViewExprList(pView, pFarg, 0, 0); + sqlite3TreeViewExprList(pView, pFarg, pWin!=0, 0); } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pWin ){ + sqlite3TreeViewWindow(pView, pWin, 0); + } +#endif break; } #ifndef SQLITE_OMIT_SUBQUERY case TK_EXISTS: { + assert( ExprUseXSelect(pExpr) ); sqlite3TreeViewLine(pView, "EXISTS-expr flags=0x%x", pExpr->flags); sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); break; } case TK_SELECT: { - sqlite3TreeViewLine(pView, "SELECT-expr flags=0x%x", pExpr->flags); + assert( ExprUseXSelect(pExpr) ); + sqlite3TreeViewLine(pView, "subquery-expr flags=0x%x", pExpr->flags); sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); break; } case TK_IN: { - sqlite3TreeViewLine(pView, "IN flags=0x%x", pExpr->flags); + sqlite3_str *pStr = sqlite3_str_new(0); + char *z; + sqlite3_str_appendf(pStr, "IN flags=0x%x", pExpr->flags); + if( pExpr->iTable ) sqlite3_str_appendf(pStr, " iTable=%d",pExpr->iTable); + if( ExprHasProperty(pExpr, EP_Subrtn) ){ + sqlite3_str_appendf(pStr, " subrtn(%d,%d)", + pExpr->y.sub.regReturn, pExpr->y.sub.iAddr); + } + z = sqlite3_str_finish(pStr); + sqlite3TreeViewLine(pView, z); + sqlite3_free(z); sqlite3TreeViewExpr(pView, pExpr->pLeft, 1); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); }else{ sqlite3TreeViewExprList(pView, pExpr->x.pList, 0, 0); @@ -28291,9 +32645,12 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m ** Z is stored in pExpr->pList->a[1].pExpr. */ case TK_BETWEEN: { - Expr *pX = pExpr->pLeft; - Expr *pY = pExpr->x.pList->a[0].pExpr; - Expr *pZ = pExpr->x.pList->a[1].pExpr; + const Expr *pX, *pY, *pZ; + pX = pExpr->pLeft; + assert( ExprUseXList(pExpr) ); + assert( pExpr->x.pList->nExpr==2 ); + pY = pExpr->x.pList->a[0].pExpr; + pZ = pExpr->x.pList->a[1].pExpr; sqlite3TreeViewLine(pView, "BETWEEN"); sqlite3TreeViewExpr(pView, pX, 1); sqlite3TreeViewExpr(pView, pY, 1); @@ -28308,25 +32665,27 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m ** is set to the column of the pseudo-table to read, or to -1 to ** read the rowid field. */ - sqlite3TreeViewLine(pView, "%s(%d)", + sqlite3TreeViewLine(pView, "%s(%d)", pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn); break; } case TK_CASE: { sqlite3TreeViewLine(pView, "CASE"); sqlite3TreeViewExpr(pView, pExpr->pLeft, 1); + assert( ExprUseXList(pExpr) ); sqlite3TreeViewExprList(pView, pExpr->x.pList, 0, 0); break; } #ifndef SQLITE_OMIT_TRIGGER case TK_RAISE: { const char *zType = "unk"; - switch( pExpr->affinity ){ + switch( pExpr->affExpr ){ case OE_Rollback: zType = "rollback"; break; case OE_Abort: zType = "abort"; break; case OE_Fail: zType = "fail"; break; case OE_Ignore: zType = "ignore"; break; } + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3TreeViewLine(pView, "RAISE %s(%Q)", zType, pExpr->u.zToken); break; } @@ -28338,11 +32697,17 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m break; } case TK_VECTOR: { - sqlite3TreeViewBareExprList(pView, pExpr->x.pList, "VECTOR"); + char *z = sqlite3_mprintf("VECTOR%s",zFlgs); + assert( ExprUseXList(pExpr) ); + sqlite3TreeViewBareExprList(pView, pExpr->x.pList, z); + sqlite3_free(z); break; } case TK_SELECT_COLUMN: { - sqlite3TreeViewLine(pView, "SELECT-COLUMN %d", pExpr->iColumn); + sqlite3TreeViewLine(pView, "SELECT-COLUMN %d of [0..%d]%s", + pExpr->iColumn, pExpr->iTable-1, + pExpr->pRight==pExpr->pLeft ? " (SELECT-owner)" : ""); + assert( ExprUseXSelect(pExpr->pLeft) ); sqlite3TreeViewSelect(pView, pExpr->pLeft->x.pSelect, 0); break; } @@ -28351,6 +32716,23 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); break; } + case TK_ERROR: { + Expr tmp; + sqlite3TreeViewLine(pView, "ERROR"); + tmp = *pExpr; + tmp.op = pExpr->op2; + sqlite3TreeViewExpr(pView, &tmp, 0); + break; + } + case TK_ROW: { + if( pExpr->iColumn<=0 ){ + sqlite3TreeViewLine(pView, "First FROM table rowid"); + }else{ + sqlite3TreeViewLine(pView, "First FROM table column %d", + pExpr->iColumn-1); + } + break; + } default: { sqlite3TreeViewLine(pView, "op=%d", pExpr->op); break; @@ -28362,9 +32744,9 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m sqlite3TreeViewExpr(pView, pExpr->pRight, 0); }else if( zUniOp ){ sqlite3TreeViewLine(pView, "%s%s", zUniOp, zFlgs); - sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); } - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } @@ -28384,14 +32766,27 @@ SQLITE_PRIVATE void sqlite3TreeViewBareExprList( sqlite3TreeViewLine(pView, "%s", zLabel); for(i=0; inExpr; i++){ int j = pList->a[i].u.x.iOrderByCol; - char *zName = pList->a[i].zName; + char *zName = pList->a[i].zEName; int moreToFollow = inExpr - 1; if( j || zName ){ - sqlite3TreeViewPush(pView, moreToFollow); + sqlite3TreeViewPush(&pView, moreToFollow); moreToFollow = 0; sqlite3TreeViewLine(pView, 0); if( zName ){ - fprintf(stdout, "AS %s ", zName); + switch( pList->a[i].fg.eEName ){ + default: + fprintf(stdout, "AS %s ", zName); + break; + case ENAME_TAB: + fprintf(stdout, "TABLE-ALIAS-NAME(\"%s\") ", zName); + if( pList->a[i].fg.bUsed ) fprintf(stdout, "(used) "); + if( pList->a[i].fg.bUsingTerm ) fprintf(stdout, "(USING-term) "); + if( pList->a[i].fg.bNoExpand ) fprintf(stdout, "(NoExpand) "); + break; + case ENAME_SPAN: + fprintf(stdout, "SPAN(\"%s\") ", zName); + break; + } } if( j ){ fprintf(stdout, "iOrderByCol=%d", j); @@ -28401,7 +32796,7 @@ SQLITE_PRIVATE void sqlite3TreeViewBareExprList( } sqlite3TreeViewExpr(pView, pList->a[i].pExpr, moreToFollow); if( j || zName ){ - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } } } @@ -28412,11 +32807,378 @@ SQLITE_PRIVATE void sqlite3TreeViewExprList( u8 moreToFollow, const char *zLabel ){ - pView = sqlite3TreeViewPush(pView, moreToFollow); + sqlite3TreeViewPush(&pView, moreToFollow); sqlite3TreeViewBareExprList(pView, pList, zLabel); - sqlite3TreeViewPop(pView); + sqlite3TreeViewPop(&pView); } +/* +** Generate a human-readable explanation of an id-list. +*/ +SQLITE_PRIVATE void sqlite3TreeViewBareIdList( + TreeView *pView, + const IdList *pList, + const char *zLabel +){ + if( zLabel==0 || zLabel[0]==0 ) zLabel = "LIST"; + if( pList==0 ){ + sqlite3TreeViewLine(pView, "%s (empty)", zLabel); + }else{ + int i; + sqlite3TreeViewLine(pView, "%s", zLabel); + for(i=0; inId; i++){ + char *zName = pList->a[i].zName; + int moreToFollow = inId - 1; + if( zName==0 ) zName = "(null)"; + sqlite3TreeViewPush(&pView, moreToFollow); + sqlite3TreeViewLine(pView, 0); + if( pList->eU4==EU4_NONE ){ + fprintf(stdout, "%s\n", zName); + }else if( pList->eU4==EU4_IDX ){ + fprintf(stdout, "%s (%d)\n", zName, pList->a[i].u4.idx); + }else{ + assert( pList->eU4==EU4_EXPR ); + if( pList->a[i].u4.pExpr==0 ){ + fprintf(stdout, "%s (pExpr=NULL)\n", zName); + }else{ + fprintf(stdout, "%s\n", zName); + sqlite3TreeViewPush(&pView, inId-1); + sqlite3TreeViewExpr(pView, pList->a[i].u4.pExpr, 0); + sqlite3TreeViewPop(&pView); + } + } + sqlite3TreeViewPop(&pView); + } + } +} +SQLITE_PRIVATE void sqlite3TreeViewIdList( + TreeView *pView, + const IdList *pList, + u8 moreToFollow, + const char *zLabel +){ + sqlite3TreeViewPush(&pView, moreToFollow); + sqlite3TreeViewBareIdList(pView, pList, zLabel); + sqlite3TreeViewPop(&pView); +} + +/* +** Generate a human-readable explanation of a list of Upsert objects +*/ +SQLITE_PRIVATE void sqlite3TreeViewUpsert( + TreeView *pView, + const Upsert *pUpsert, + u8 moreToFollow +){ + if( pUpsert==0 ) return; + sqlite3TreeViewPush(&pView, moreToFollow); + while( pUpsert ){ + int n; + sqlite3TreeViewPush(&pView, pUpsert->pNextUpsert!=0 || moreToFollow); + sqlite3TreeViewLine(pView, "ON CONFLICT DO %s", + pUpsert->isDoUpdate ? "UPDATE" : "NOTHING"); + n = (pUpsert->pUpsertSet!=0) + (pUpsert->pUpsertWhere!=0); + sqlite3TreeViewExprList(pView, pUpsert->pUpsertTarget, (n--)>0, "TARGET"); + sqlite3TreeViewExprList(pView, pUpsert->pUpsertSet, (n--)>0, "SET"); + if( pUpsert->pUpsertWhere ){ + sqlite3TreeViewItem(pView, "WHERE", (n--)>0); + sqlite3TreeViewExpr(pView, pUpsert->pUpsertWhere, 0); + sqlite3TreeViewPop(&pView); + } + sqlite3TreeViewPop(&pView); + pUpsert = pUpsert->pNextUpsert; + } + sqlite3TreeViewPop(&pView); +} + +#if TREETRACE_ENABLED +/* +** Generate a human-readable diagram of the data structure that go +** into generating an DELETE statement. +*/ +SQLITE_PRIVATE void sqlite3TreeViewDelete( + const With *pWith, + const SrcList *pTabList, + const Expr *pWhere, + const ExprList *pOrderBy, + const Expr *pLimit, + const Trigger *pTrigger +){ + int n = 0; + TreeView *pView = 0; + sqlite3TreeViewPush(&pView, 0); + sqlite3TreeViewLine(pView, "DELETE"); + if( pWith ) n++; + if( pTabList ) n++; + if( pWhere ) n++; + if( pOrderBy ) n++; + if( pLimit ) n++; + if( pTrigger ) n++; + if( pWith ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewWith(pView, pWith, 0); + sqlite3TreeViewPop(&pView); + } + if( pTabList ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "FROM"); + sqlite3TreeViewSrcList(pView, pTabList); + sqlite3TreeViewPop(&pView); + } + if( pWhere ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "WHERE"); + sqlite3TreeViewExpr(pView, pWhere, 0); + sqlite3TreeViewPop(&pView); + } + if( pOrderBy ){ + sqlite3TreeViewExprList(pView, pOrderBy, (--n)>0, "ORDER-BY"); + } + if( pLimit ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "LIMIT"); + sqlite3TreeViewExpr(pView, pLimit, 0); + sqlite3TreeViewPop(&pView); + } + if( pTrigger ){ + sqlite3TreeViewTrigger(pView, pTrigger, (--n)>0, 1); + } + sqlite3TreeViewPop(&pView); +} +#endif /* TREETRACE_ENABLED */ + +#if TREETRACE_ENABLED +/* +** Generate a human-readable diagram of the data structure that go +** into generating an INSERT statement. +*/ +SQLITE_PRIVATE void sqlite3TreeViewInsert( + const With *pWith, + const SrcList *pTabList, + const IdList *pColumnList, + const Select *pSelect, + const ExprList *pExprList, + int onError, + const Upsert *pUpsert, + const Trigger *pTrigger +){ + TreeView *pView = 0; + int n = 0; + const char *zLabel = "INSERT"; + switch( onError ){ + case OE_Replace: zLabel = "REPLACE"; break; + case OE_Ignore: zLabel = "INSERT OR IGNORE"; break; + case OE_Rollback: zLabel = "INSERT OR ROLLBACK"; break; + case OE_Abort: zLabel = "INSERT OR ABORT"; break; + case OE_Fail: zLabel = "INSERT OR FAIL"; break; + } + sqlite3TreeViewPush(&pView, 0); + sqlite3TreeViewLine(pView, zLabel); + if( pWith ) n++; + if( pTabList ) n++; + if( pColumnList ) n++; + if( pSelect ) n++; + if( pExprList ) n++; + if( pUpsert ) n++; + if( pTrigger ) n++; + if( pWith ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewWith(pView, pWith, 0); + sqlite3TreeViewPop(&pView); + } + if( pTabList ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "INTO"); + sqlite3TreeViewSrcList(pView, pTabList); + sqlite3TreeViewPop(&pView); + } + if( pColumnList ){ + sqlite3TreeViewIdList(pView, pColumnList, (--n)>0, "COLUMNS"); + } + if( pSelect ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "DATA-SOURCE"); + sqlite3TreeViewSelect(pView, pSelect, 0); + sqlite3TreeViewPop(&pView); + } + if( pExprList ){ + sqlite3TreeViewExprList(pView, pExprList, (--n)>0, "VALUES"); + } + if( pUpsert ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "UPSERT"); + sqlite3TreeViewUpsert(pView, pUpsert, 0); + sqlite3TreeViewPop(&pView); + } + if( pTrigger ){ + sqlite3TreeViewTrigger(pView, pTrigger, (--n)>0, 1); + } + sqlite3TreeViewPop(&pView); +} +#endif /* TREETRACE_ENABLED */ + +#if TREETRACE_ENABLED +/* +** Generate a human-readable diagram of the data structure that go +** into generating an UPDATE statement. +*/ +SQLITE_PRIVATE void sqlite3TreeViewUpdate( + const With *pWith, + const SrcList *pTabList, + const ExprList *pChanges, + const Expr *pWhere, + int onError, + const ExprList *pOrderBy, + const Expr *pLimit, + const Upsert *pUpsert, + const Trigger *pTrigger +){ + int n = 0; + TreeView *pView = 0; + const char *zLabel = "UPDATE"; + switch( onError ){ + case OE_Replace: zLabel = "UPDATE OR REPLACE"; break; + case OE_Ignore: zLabel = "UPDATE OR IGNORE"; break; + case OE_Rollback: zLabel = "UPDATE OR ROLLBACK"; break; + case OE_Abort: zLabel = "UPDATE OR ABORT"; break; + case OE_Fail: zLabel = "UPDATE OR FAIL"; break; + } + sqlite3TreeViewPush(&pView, 0); + sqlite3TreeViewLine(pView, zLabel); + if( pWith ) n++; + if( pTabList ) n++; + if( pChanges ) n++; + if( pWhere ) n++; + if( pOrderBy ) n++; + if( pLimit ) n++; + if( pUpsert ) n++; + if( pTrigger ) n++; + if( pWith ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewWith(pView, pWith, 0); + sqlite3TreeViewPop(&pView); + } + if( pTabList ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "FROM"); + sqlite3TreeViewSrcList(pView, pTabList); + sqlite3TreeViewPop(&pView); + } + if( pChanges ){ + sqlite3TreeViewExprList(pView, pChanges, (--n)>0, "SET"); + } + if( pWhere ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "WHERE"); + sqlite3TreeViewExpr(pView, pWhere, 0); + sqlite3TreeViewPop(&pView); + } + if( pOrderBy ){ + sqlite3TreeViewExprList(pView, pOrderBy, (--n)>0, "ORDER-BY"); + } + if( pLimit ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "LIMIT"); + sqlite3TreeViewExpr(pView, pLimit, 0); + sqlite3TreeViewPop(&pView); + } + if( pUpsert ){ + sqlite3TreeViewPush(&pView, (--n)>0); + sqlite3TreeViewLine(pView, "UPSERT"); + sqlite3TreeViewUpsert(pView, pUpsert, 0); + sqlite3TreeViewPop(&pView); + } + if( pTrigger ){ + sqlite3TreeViewTrigger(pView, pTrigger, (--n)>0, 1); + } + sqlite3TreeViewPop(&pView); +} +#endif /* TREETRACE_ENABLED */ + +#ifndef SQLITE_OMIT_TRIGGER +/* +** Show a human-readable graph of a TriggerStep +*/ +SQLITE_PRIVATE void sqlite3TreeViewTriggerStep( + TreeView *pView, + const TriggerStep *pStep, + u8 moreToFollow, + u8 showFullList +){ + int cnt = 0; + if( pStep==0 ) return; + sqlite3TreeViewPush(&pView, + moreToFollow || (showFullList && pStep->pNext!=0)); + do{ + if( cnt++ && pStep->pNext==0 ){ + sqlite3TreeViewPop(&pView); + sqlite3TreeViewPush(&pView, 0); + } + sqlite3TreeViewLine(pView, "%s", pStep->zSpan ? pStep->zSpan : "RETURNING"); + }while( showFullList && (pStep = pStep->pNext)!=0 ); + sqlite3TreeViewPop(&pView); +} + +/* +** Show a human-readable graph of a Trigger +*/ +SQLITE_PRIVATE void sqlite3TreeViewTrigger( + TreeView *pView, + const Trigger *pTrigger, + u8 moreToFollow, + u8 showFullList +){ + int cnt = 0; + if( pTrigger==0 ) return; + sqlite3TreeViewPush(&pView, + moreToFollow || (showFullList && pTrigger->pNext!=0)); + do{ + if( cnt++ && pTrigger->pNext==0 ){ + sqlite3TreeViewPop(&pView); + sqlite3TreeViewPush(&pView, 0); + } + sqlite3TreeViewLine(pView, "TRIGGER %s", pTrigger->zName); + sqlite3TreeViewPush(&pView, 0); + sqlite3TreeViewTriggerStep(pView, pTrigger->step_list, 0, 1); + sqlite3TreeViewPop(&pView); + }while( showFullList && (pTrigger = pTrigger->pNext)!=0 ); + sqlite3TreeViewPop(&pView); +} +#endif /* SQLITE_OMIT_TRIGGER */ + + +/* +** These simplified versions of the tree-view routines omit unnecessary +** parameters. These variants are intended to be used from a symbolic +** debugger, such as "gdb", during interactive debugging sessions. +** +** This routines are given external linkage so that they will always be +** accessible to the debugging, and to avoid warnings about unused +** functions. But these routines only exist in debugging builds, so they +** do not contaminate the interface. +*/ +SQLITE_PRIVATE void sqlite3ShowExpr(const Expr *p){ sqlite3TreeViewExpr(0,p,0); } +SQLITE_PRIVATE void sqlite3ShowExprList(const ExprList *p){ sqlite3TreeViewExprList(0,p,0,0);} +SQLITE_PRIVATE void sqlite3ShowIdList(const IdList *p){ sqlite3TreeViewIdList(0,p,0,0); } +SQLITE_PRIVATE void sqlite3ShowSrcList(const SrcList *p){ sqlite3TreeViewSrcList(0,p); } +SQLITE_PRIVATE void sqlite3ShowSelect(const Select *p){ sqlite3TreeViewSelect(0,p,0); } +SQLITE_PRIVATE void sqlite3ShowWith(const With *p){ sqlite3TreeViewWith(0,p,0); } +SQLITE_PRIVATE void sqlite3ShowUpsert(const Upsert *p){ sqlite3TreeViewUpsert(0,p,0); } +#ifndef SQLITE_OMIT_TRIGGER +SQLITE_PRIVATE void sqlite3ShowTriggerStep(const TriggerStep *p){ + sqlite3TreeViewTriggerStep(0,p,0,0); +} +SQLITE_PRIVATE void sqlite3ShowTriggerStepList(const TriggerStep *p){ + sqlite3TreeViewTriggerStep(0,p,0,1); +} +SQLITE_PRIVATE void sqlite3ShowTrigger(const Trigger *p){ sqlite3TreeViewTrigger(0,p,0,0); } +SQLITE_PRIVATE void sqlite3ShowTriggerList(const Trigger *p){ sqlite3TreeViewTrigger(0,p,0,1);} +#endif +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE void sqlite3ShowWindow(const Window *p){ sqlite3TreeViewWindow(0,p,0); } +SQLITE_PRIVATE void sqlite3ShowWinFunc(const Window *p){ sqlite3TreeViewWinFunc(0,p,0); } +#endif + #endif /* SQLITE_DEBUG */ /************** End of treeview.c ********************************************/ @@ -28445,16 +33207,41 @@ SQLITE_PRIVATE void sqlite3TreeViewExprList( ** This structure is the current state of the generator. */ static SQLITE_WSD struct sqlite3PrngType { - unsigned char isInit; /* True if initialized */ - unsigned char i, j; /* State variables */ - unsigned char s[256]; /* State variables */ + u32 s[16]; /* 64 bytes of chacha20 state */ + u8 out[64]; /* Output bytes */ + u8 n; /* Output bytes remaining */ } sqlite3Prng; + +/* The RFC-7539 ChaCha20 block function +*/ +#define ROTL(a,b) (((a) << (b)) | ((a) >> (32 - (b)))) +#define QR(a, b, c, d) ( \ + a += b, d ^= a, d = ROTL(d,16), \ + c += d, b ^= c, b = ROTL(b,12), \ + a += b, d ^= a, d = ROTL(d, 8), \ + c += d, b ^= c, b = ROTL(b, 7)) +static void chacha_block(u32 *out, const u32 *in){ + int i; + u32 x[16]; + memcpy(x, in, 64); + for(i=0; i<10; i++){ + QR(x[0], x[4], x[ 8], x[12]); + QR(x[1], x[5], x[ 9], x[13]); + QR(x[2], x[6], x[10], x[14]); + QR(x[3], x[7], x[11], x[15]); + QR(x[0], x[5], x[10], x[15]); + QR(x[1], x[6], x[11], x[12]); + QR(x[2], x[7], x[ 8], x[13]); + QR(x[3], x[4], x[ 9], x[14]); + } + for(i=0; i<16; i++) out[i] = x[i]+in[i]; +} + /* ** Return N random bytes. */ SQLITE_API void sqlite3_randomness(int N, void *pBuf){ - unsigned char t; unsigned char *zBuf = pBuf; /* The "wsdPrng" macro will resolve to the pseudo-random number generator @@ -28484,48 +33271,46 @@ SQLITE_API void sqlite3_randomness(int N, void *pBuf){ sqlite3_mutex_enter(mutex); if( N<=0 || pBuf==0 ){ - wsdPrng.isInit = 0; + wsdPrng.s[0] = 0; sqlite3_mutex_leave(mutex); return; } /* Initialize the state of the random number generator once, - ** the first time this routine is called. The seed value does - ** not need to contain a lot of randomness since we are not - ** trying to do secure encryption or anything like that... - ** - ** Nothing in this file or anywhere else in SQLite does any kind of - ** encryption. The RC4 algorithm is being used as a PRNG (pseudo-random - ** number generator) not as an encryption device. + ** the first time this routine is called. */ - if( !wsdPrng.isInit ){ - int i; - char k[256]; - wsdPrng.j = 0; - wsdPrng.i = 0; - sqlite3OsRandomness(sqlite3_vfs_find(0), 256, k); - for(i=0; i<256; i++){ - wsdPrng.s[i] = (u8)i; + if( wsdPrng.s[0]==0 ){ + sqlite3_vfs *pVfs = sqlite3_vfs_find(0); + static const u32 chacha20_init[] = { + 0x61707865, 0x3320646e, 0x79622d32, 0x6b206574 + }; + memcpy(&wsdPrng.s[0], chacha20_init, 16); + if( NEVER(pVfs==0) ){ + memset(&wsdPrng.s[4], 0, 44); + }else{ + sqlite3OsRandomness(pVfs, 44, (char*)&wsdPrng.s[4]); } - for(i=0; i<256; i++){ - wsdPrng.j += wsdPrng.s[i] + k[i]; - t = wsdPrng.s[wsdPrng.j]; - wsdPrng.s[wsdPrng.j] = wsdPrng.s[i]; - wsdPrng.s[i] = t; - } - wsdPrng.isInit = 1; + wsdPrng.s[15] = wsdPrng.s[12]; + wsdPrng.s[12] = 0; + wsdPrng.n = 0; } assert( N>0 ); - do{ - wsdPrng.i++; - t = wsdPrng.s[wsdPrng.i]; - wsdPrng.j += t; - wsdPrng.s[wsdPrng.i] = wsdPrng.s[wsdPrng.j]; - wsdPrng.s[wsdPrng.j] = t; - t += wsdPrng.s[wsdPrng.i]; - *(zBuf++) = wsdPrng.s[t]; - }while( --N ); + while( 1 /* exit by break */ ){ + if( N<=wsdPrng.n ){ + memcpy(zBuf, &wsdPrng.out[wsdPrng.n-N], N); + wsdPrng.n -= N; + break; + } + if( wsdPrng.n>0 ){ + memcpy(zBuf, wsdPrng.out, wsdPrng.n); + N -= wsdPrng.n; + zBuf += wsdPrng.n; + } + wsdPrng.s[12]++; + chacha_block((u32*)wsdPrng.out, wsdPrng.s); + wsdPrng.n = 64; + } sqlite3_mutex_leave(mutex); } @@ -28627,13 +33412,13 @@ SQLITE_PRIVATE int sqlite3ThreadCreate( memset(p, 0, sizeof(*p)); p->xTask = xTask; p->pIn = pIn; - /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a ** function that returns SQLITE_ERROR when passed the argument 200, that - ** forces worker threads to run sequentially and deterministically + ** forces worker threads to run sequentially and deterministically ** for testing purposes. */ if( sqlite3FaultSim(200) ){ rc = 1; - }else{ + }else{ rc = pthread_create(&p->tid, 0, xTask, pIn); } if( rc ){ @@ -28715,9 +33500,9 @@ SQLITE_PRIVATE int sqlite3ThreadCreate( *ppThread = 0; p = sqlite3Malloc(sizeof(*p)); if( p==0 ) return SQLITE_NOMEM_BKPT; - /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a ** function that returns SQLITE_ERROR when passed the argument 200, that - ** forces worker threads to run sequentially and deterministically + ** forces worker threads to run sequentially and deterministically ** (via the sqlite3FaultSim() term of the conditional) for testing ** purposes. */ if( sqlite3GlobalConfig.bCoreMutex==0 || sqlite3FaultSim(200) ){ @@ -28846,7 +33631,7 @@ SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file contains routines used to translate between UTF-8, +** This file contains routines used to translate between UTF-8, ** UTF-16, UTF-16BE, and UTF-16LE. ** ** Notes on UTF-8: @@ -28942,26 +33727,6 @@ static const unsigned char sqlite3Utf8Trans1[] = { } \ } -#define READ_UTF16LE(zIn, TERM, c){ \ - c = (*zIn++); \ - c += ((*zIn++)<<8); \ - if( c>=0xD800 && c<0xE000 && TERM ){ \ - int c2 = (*zIn++); \ - c2 += ((*zIn++)<<8); \ - c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10); \ - } \ -} - -#define READ_UTF16BE(zIn, TERM, c){ \ - c = ((*zIn++)<<8); \ - c += (*zIn++); \ - if( c>=0xD800 && c<0xE000 && TERM ){ \ - int c2 = ((*zIn++)<<8); \ - c2 += (*zIn++); \ - c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10); \ - } \ -} - /* ** Translate a single UTF-8 character. Return the unicode value. ** @@ -29027,7 +33792,7 @@ SQLITE_PRIVATE u32 sqlite3Utf8Read( /* ** If the TRANSLATE_TRACE macro is defined, the value of each Mem is ** printed on stderr on the way into and out of sqlite3VdbeMemTranslate(). -*/ +*/ /* #define TRANSLATE_TRACE 1 */ #ifndef SQLITE_OMIT_UTF16 @@ -29037,11 +33802,11 @@ SQLITE_PRIVATE u32 sqlite3Utf8Read( ** encoding, or if *pMem does not contain a string value. */ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ - int len; /* Maximum length of output string in bytes */ - unsigned char *zOut; /* Output buffer */ - unsigned char *zIn; /* Input iterator */ - unsigned char *zTerm; /* End of input */ - unsigned char *z; /* Output iterator */ + sqlite3_int64 len; /* Maximum length of output string in bytes */ + unsigned char *zOut; /* Output buffer */ + unsigned char *zIn; /* Input iterator */ + unsigned char *zTerm; /* End of input */ + unsigned char *z; /* Output iterator */ unsigned int c; assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); @@ -29052,13 +33817,15 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired #if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG) { - char zBuf[100]; - sqlite3VdbeMemPrettyPrint(pMem, zBuf); - fprintf(stderr, "INPUT: %s\n", zBuf); + StrAccum acc; + char zBuf[1000]; + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); + sqlite3VdbeMemPrettyPrint(pMem, &acc); + fprintf(stderr, "INPUT: %s\n", sqlite3StrAccumFinish(&acc)); } #endif - /* If the translation is between UTF-16 little and big endian, then + /* If the translation is between UTF-16 little and big endian, then ** all that is required is to swap the byte order. This case is handled ** differently from the others. */ @@ -29090,14 +33857,14 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired ** nul-terminator. */ pMem->n &= ~1; - len = pMem->n * 2 + 1; + len = 2 * (sqlite3_int64)pMem->n + 1; }else{ /* When converting from UTF-8 to UTF-16 the maximum growth is caused ** when a 1-byte UTF-8 character is translated into a 2-byte UTF-16 ** character. Two bytes are required in the output buffer for the ** nul-terminator. */ - len = pMem->n * 2 + 2; + len = 2 * (sqlite3_int64)pMem->n + 2; } /* Set zIn to point at the start of the input buffer and zTerm to point 1 @@ -29136,13 +33903,59 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired if( pMem->enc==SQLITE_UTF16LE ){ /* UTF-16 Little-endian -> UTF-8 */ while( zIn=0xd800 && c<0xe000 ){ +#ifdef SQLITE_REPLACE_INVALID_UTF + if( c>=0xdc00 || zIn>=zTerm ){ + c = 0xfffd; + }else{ + int c2 = *(zIn++); + c2 += (*(zIn++))<<8; + if( c2<0xdc00 || c2>=0xe000 ){ + zIn -= 2; + c = 0xfffd; + }else{ + c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000; + } + } +#else + if( zIn UTF-8 */ while( zIn=0xd800 && c<0xe000 ){ +#ifdef SQLITE_REPLACE_INVALID_UTF + if( c>=0xdc00 || zIn>=zTerm ){ + c = 0xfffd; + }else{ + int c2 = (*(zIn++))<<8; + c2 += *(zIn++); + if( c2<0xdc00 || c2>=0xe000 ){ + zIn -= 2; + c = 0xfffd; + }else{ + c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000; + } + } +#else + if( zInn+(desiredEnc==SQLITE_UTF8?1:2))<=len ); - c = pMem->flags; + c = MEM_Str|MEM_Term|(pMem->flags&(MEM_AffMask|MEM_Subtype)); sqlite3VdbeMemRelease(pMem); - pMem->flags = MEM_Str|MEM_Term|(c&(MEM_AffMask|MEM_Subtype)); + pMem->flags = c; pMem->enc = desiredEnc; pMem->z = (char*)zOut; pMem->zMalloc = pMem->z; @@ -29162,9 +33975,11 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired translate_out: #if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG) { - char zBuf[100]; - sqlite3VdbeMemPrettyPrint(pMem, zBuf); - fprintf(stderr, "OUTPUT: %s\n", zBuf); + StrAccum acc; + char zBuf[1000]; + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); + sqlite3VdbeMemPrettyPrint(pMem, &acc); + fprintf(stderr, "OUTPUT: %s\n", sqlite3StrAccumFinish(&acc)); } #endif return SQLITE_OK; @@ -29173,7 +33988,7 @@ translate_out: #ifndef SQLITE_OMIT_UTF16 /* -** This routine checks for a byte-order mark at the beginning of the +** This routine checks for a byte-order mark at the beginning of the ** UTF-16 string stored in *pMem. If one is present, it is removed and ** the encoding of the Mem adjusted. This routine does not do any ** byte-swapping, it just sets Mem.enc appropriately. @@ -29196,7 +34011,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemHandleBom(Mem *pMem){ bom = SQLITE_UTF16LE; } } - + if( bom ){ rc = sqlite3VdbeMemMakeWriteable(pMem); if( rc==SQLITE_OK ){ @@ -29216,7 +34031,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemHandleBom(Mem *pMem){ ** pZ is a UTF-8 encoded unicode string. If nByte is less than zero, ** return the number of unicode characters in pZ up to (but not including) ** the first 0x00 byte. If nByte is not less than zero, return the -** number of unicode characters in the first nByte of pZ (or up to +** number of unicode characters in the first nByte of pZ (or up to ** the first 0x00, whichever comes first). */ SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *zIn, int nByte){ @@ -29236,7 +34051,7 @@ SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *zIn, int nByte){ return r; } -/* This test function is not currently used by the automated test-suite. +/* This test function is not currently used by the automated test-suite. ** Hence it is only available in debug builds. */ #if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) @@ -29298,19 +34113,16 @@ SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *zIn, int nChar){ int c; unsigned char const *z = zIn; int n = 0; - - if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){ - while( n=0xd8 && c<0xdc && z[0]>=0xdc && z[0]<0xe0 ) z += 2; + n++; } - return (int)(z-(unsigned char const *)zIn); + return (int)(z-(unsigned char const *)zIn) + - (SQLITE_UTF16NATIVE==SQLITE_UTF16LE); } #if defined(SQLITE_TEST) @@ -29340,30 +34152,6 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){ assert( c==t ); assert( (z-zBuf)==n ); } - for(i=0; i<0x00110000; i++){ - if( i>=0xD800 && i<0xE000 ) continue; - z = zBuf; - WRITE_UTF16LE(z, i); - n = (int)(z-zBuf); - assert( n>0 && n<=4 ); - z[0] = 0; - z = zBuf; - READ_UTF16LE(z, 1, c); - assert( c==i ); - assert( (z-zBuf)==n ); - } - for(i=0; i<0x00110000; i++){ - if( i>=0xD800 && i<0xE000 ) continue; - z = zBuf; - WRITE_UTF16BE(z, i); - n = (int)(z-zBuf); - assert( n>0 && n<=4 ); - z[0] = 0; - z = zBuf; - READ_UTF16BE(z, 1, c); - assert( c==i ); - assert( (z-zBuf)==n ); - } } #endif /* SQLITE_TEST */ #endif /* SQLITE_OMIT_UTF16 */ @@ -29389,30 +34177,28 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){ */ /* #include "sqliteInt.h" */ /* #include */ -#if HAVE_ISNAN || SQLITE_HAVE_ISNAN -# include +#ifndef SQLITE_OMIT_FLOATING_POINT +#include #endif /* -** Routine needed to support the testcase() macro. -*/ -#ifdef SQLITE_COVERAGE_TEST -SQLITE_PRIVATE void sqlite3Coverage(int x){ - static unsigned dummy = 0; - dummy += (unsigned)x; -} -#endif - -/* -** Give a callback to the test harness that can be used to simulate faults -** in places where it is difficult or expensive to do so purely by means -** of inputs. +** Calls to sqlite3FaultSim() are used to simulate a failure during testing, +** or to bypass normal error detection during testing in order to let +** execute proceed further downstream. ** -** The intent of the integer argument is to let the fault simulator know -** which of multiple sqlite3FaultSim() calls has been hit. +** In deployment, sqlite3FaultSim() *always* return SQLITE_OK (0). The +** sqlite3FaultSim() function only returns non-zero during testing. ** -** Return whatever integer value the test callback returns, or return -** SQLITE_OK if no test callback is installed. +** During testing, if the test harness has set a fault-sim callback using +** a call to sqlite3_test_control(SQLITE_TESTCTRL_FAULT_INSTALL), then +** each call to sqlite3FaultSim() is relayed to that application-supplied +** callback and the integer return value form the application-supplied +** callback is returned by sqlite3FaultSim(). +** +** The integer argument to sqlite3FaultSim() is a code to identify which +** sqlite3FaultSim() instance is being invoked. Each call to sqlite3FaultSim() +** should have a unique code. To prevent legacy testing applications from +** breaking, the codes should not be changed or reused. */ #ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE int sqlite3FaultSim(int iTest){ @@ -29431,36 +34217,10 @@ SQLITE_PRIVATE int sqlite3FaultSim(int iTest){ SQLITE_PRIVATE int sqlite3IsNaN(double x){ int rc; /* The value return */ #if !SQLITE_HAVE_ISNAN && !HAVE_ISNAN - /* - ** Systems that support the isnan() library function should probably - ** make use of it by compiling with -DSQLITE_HAVE_ISNAN. But we have - ** found that many systems do not have a working isnan() function so - ** this implementation is provided as an alternative. - ** - ** This NaN test sometimes fails if compiled on GCC with -ffast-math. - ** On the other hand, the use of -ffast-math comes with the following - ** warning: - ** - ** This option [-ffast-math] should never be turned on by any - ** -O option since it can result in incorrect output for programs - ** which depend on an exact implementation of IEEE or ISO - ** rules/specifications for math functions. - ** - ** Under MSVC, this NaN test may fail if compiled with a floating- - ** point precision mode other than /fp:precise. From the MSDN - ** documentation: - ** - ** The compiler [with /fp:precise] will properly handle comparisons - ** involving NaN. For example, x != x evaluates to true if x is NaN - ** ... - */ -#ifdef __FAST_MATH__ -# error SQLite will not work correctly with the -ffast-math option of GCC. -#endif - volatile double y = x; - volatile double z = y; - rc = (y!=z); -#else /* if HAVE_ISNAN */ + u64 y; + memcpy(&y,&x,sizeof(y)); + rc = IsNaN(y); +#else rc = isnan(x); #endif /* HAVE_ISNAN */ testcase( rc ); @@ -29482,15 +34242,21 @@ SQLITE_PRIVATE int sqlite3Strlen30(const char *z){ } /* -** Return the declared type of a column. Or return zDflt if the column +** Return the declared type of a column. Or return zDflt if the column ** has no declared type. ** ** The column type is an extra string stored after the zero-terminator on ** the column name if and only if the COLFLAG_HASTYPE flag is set. */ SQLITE_PRIVATE char *sqlite3ColumnType(Column *pCol, char *zDflt){ - if( (pCol->colFlags & COLFLAG_HASTYPE)==0 ) return zDflt; - return pCol->zName + strlen(pCol->zName) + 1; + if( pCol->colFlags & COLFLAG_HASTYPE ){ + return pCol->zCnName + strlen(pCol->zCnName) + 1; + }else if( pCol->eCType ){ + assert( pCol->eCType<=SQLITE_N_STDTYPE ); + return (char*)sqlite3StdType[pCol->eCType-1]; + }else{ + return zDflt; + } } /* @@ -29511,7 +34277,22 @@ static SQLITE_NOINLINE void sqlite3ErrorFinish(sqlite3 *db, int err_code){ SQLITE_PRIVATE void sqlite3Error(sqlite3 *db, int err_code){ assert( db!=0 ); db->errCode = err_code; - if( err_code || db->pErr ) sqlite3ErrorFinish(db, err_code); + if( err_code || db->pErr ){ + sqlite3ErrorFinish(db, err_code); + }else{ + db->errByteOffset = -1; + } +} + +/* +** The equivalent of sqlite3Error(db, SQLITE_OK). Clear the error state +** and error message. +*/ +SQLITE_PRIVATE void sqlite3ErrorClear(sqlite3 *db){ + assert( db!=0 ); + db->errCode = SQLITE_OK; + db->errByteOffset = -1; + if( db->pErr ) sqlite3ValueSetNull(db->pErr); } /* @@ -29520,6 +34301,23 @@ SQLITE_PRIVATE void sqlite3Error(sqlite3 *db, int err_code){ */ SQLITE_PRIVATE void sqlite3SystemError(sqlite3 *db, int rc){ if( rc==SQLITE_IOERR_NOMEM ) return; +#ifdef SQLITE_USE_SEH + if( rc==SQLITE_IOERR_IN_PAGE ){ + int ii; + int iErr; + sqlite3BtreeEnterAll(db); + for(ii=0; iinDb; ii++){ + if( db->aDb[ii].pBt ){ + iErr = sqlite3PagerWalSystemErrno(sqlite3BtreePager(db->aDb[ii].pBt)); + if( iErr ){ + db->iSysErrno = iErr; + } + } + } + sqlite3BtreeLeaveAll(db); + return; + } +#endif rc &= 0xff; if( rc==SQLITE_CANTOPEN || rc==SQLITE_IOERR ){ db->iSysErrno = sqlite3OsGetLastError(db->pVfs); @@ -29531,17 +34329,8 @@ SQLITE_PRIVATE void sqlite3SystemError(sqlite3 *db, int rc){ ** handle "db". The error code is set to "err_code". ** ** If it is not NULL, string zFormat specifies the format of the -** error string in the style of the printf functions: The following -** format characters are allowed: -** -** %s Insert a string -** %z A string that should be freed after use -** %d Insert an integer -** %T Insert a token -** %S Insert the first element of a SrcList -** -** zFormat and any string tokens that follow it are assumed to be -** encoded in UTF-8. +** error string. zFormat and any string tokens that follow it are +** assumed to be encoded in UTF-8. ** ** To clear the most recent error for sqlite handle "db", sqlite3Error ** should be called with err_code set to SQLITE_OK and zFormat set @@ -29563,15 +34352,28 @@ SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3 *db, int err_code, const char *z } } +/* +** Check for interrupts and invoke progress callback. +*/ +SQLITE_PRIVATE void sqlite3ProgressCheck(Parse *p){ + sqlite3 *db = p->db; + if( AtomicLoad(&db->u1.isInterrupted) ){ + p->nErr++; + p->rc = SQLITE_INTERRUPT; + } +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK + if( db->xProgress && (++p->nProgressSteps)>=db->nProgressOps ){ + if( db->xProgress(db->pProgressArg) ){ + p->nErr++; + p->rc = SQLITE_INTERRUPT; + } + p->nProgressSteps = 0; + } +#endif +} + /* ** Add an error message to pParse->zErrMsg and increment pParse->nErr. -** The following formatting characters are allowed: -** -** %s Insert a string -** %z A string that should be freed after use -** %d Insert an integer -** %T Insert a token -** %S Insert the first element of a SrcList ** ** This function should be used to report any error that occurs while ** compiling an SQL statement (i.e. within sqlite3_prepare()). The @@ -29584,19 +34386,41 @@ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){ char *zMsg; va_list ap; sqlite3 *db = pParse->db; + assert( db!=0 ); + assert( db->pParse==pParse || db->pParse->pToplevel==pParse ); + db->errByteOffset = -2; va_start(ap, zFormat); zMsg = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); + if( db->errByteOffset<-1 ) db->errByteOffset = -1; if( db->suppressErr ){ sqlite3DbFree(db, zMsg); + if( db->mallocFailed ){ + pParse->nErr++; + pParse->rc = SQLITE_NOMEM; + } }else{ pParse->nErr++; sqlite3DbFree(db, pParse->zErrMsg); pParse->zErrMsg = zMsg; pParse->rc = SQLITE_ERROR; + pParse->pWith = 0; } } +/* +** If database connection db is currently parsing SQL, then transfer +** error code errCode to that parser if the parser has not already +** encountered some other kind of error. +*/ +SQLITE_PRIVATE int sqlite3ErrorToParser(sqlite3 *db, int errCode){ + Parse *pParse; + if( db==0 || (pParse = db->pParse)==0 ) return errCode; + pParse->rc = errCode; + pParse->nErr++; + return errCode; +} + /* ** Convert an SQL-style quoted string into a normal string by removing ** the quote characters. The conversion is done in-place. If the @@ -29610,7 +34434,7 @@ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){ ** dequoted string, exclusive of the zero terminator, if dequoting does ** occur. ** -** 2002-Feb-14: This routine is extended to remove MS-Access style +** 2002-02-14: This routine is extended to remove MS-Access style ** brackets from around identifiers. For example: "[a-b-c]" becomes ** "a-b-c". */ @@ -29636,6 +34460,34 @@ SQLITE_PRIVATE void sqlite3Dequote(char *z){ } z[j] = 0; } +SQLITE_PRIVATE void sqlite3DequoteExpr(Expr *p){ + assert( !ExprHasProperty(p, EP_IntValue) ); + assert( sqlite3Isquote(p->u.zToken[0]) ); + p->flags |= p->u.zToken[0]=='"' ? EP_Quoted|EP_DblQuoted : EP_Quoted; + sqlite3Dequote(p->u.zToken); +} + +/* +** If the input token p is quoted, try to adjust the token to remove +** the quotes. This is not always possible: +** +** "abc" -> abc +** "ab""cd" -> (not possible because of the interior "") +** +** Remove the quotes if possible. This is a optimization. The overall +** system should still return the correct answer even if this routine +** is always a no-op. +*/ +SQLITE_PRIVATE void sqlite3DequoteToken(Token *p){ + unsigned int i; + if( p->n<2 ) return; + if( !sqlite3Isquote(p->z[0]) ) return; + for(i=1; in-1; i++){ + if( sqlite3Isquote(p->z[i]) ) return; + } + p->n -= 2; + p->z++; +} /* ** Generate a Token object from a string @@ -29668,12 +34520,18 @@ SQLITE_API int sqlite3_stricmp(const char *zLeft, const char *zRight){ } SQLITE_PRIVATE int sqlite3StrICmp(const char *zLeft, const char *zRight){ unsigned char *a, *b; - int c; + int c, x; a = (unsigned char *)zLeft; b = (unsigned char *)zRight; for(;;){ - c = (int)UpperToLower[*a] - (int)UpperToLower[*b]; - if( c || *a==0 ) break; + c = *a; + x = *b; + if( c==x ){ + if( c==0 ) break; + }else{ + c = (int)UpperToLower[c] - (int)UpperToLower[x]; + if( c ) break; + } a++; b++; } @@ -29693,42 +34551,52 @@ SQLITE_API int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){ } /* -** Compute 10 to the E-th power. Examples: E==1 results in 10. -** E==2 results in 100. E==50 results in 1.0e50. -** -** This routine only works for values of E between 1 and 341. +** Compute an 8-bit hash on a string that is insensitive to case differences */ -static LONGDOUBLE_TYPE sqlite3Pow10(int E){ -#if defined(_MSC_VER) - static const LONGDOUBLE_TYPE x[] = { - 1.0e+001, - 1.0e+002, - 1.0e+004, - 1.0e+008, - 1.0e+016, - 1.0e+032, - 1.0e+064, - 1.0e+128, - 1.0e+256 - }; - LONGDOUBLE_TYPE r = 1.0; - int i; - assert( E>=0 && E<=307 ); - for(i=0; E!=0; i++, E >>=1){ - if( E & 1 ) r *= x[i]; +SQLITE_PRIVATE u8 sqlite3StrIHash(const char *z){ + u8 h = 0; + if( z==0 ) return 0; + while( z[0] ){ + h += UpperToLower[(unsigned char)z[0]]; + z++; } - return r; -#else - LONGDOUBLE_TYPE x = 10.0; - LONGDOUBLE_TYPE r = 1.0; - while(1){ - if( E & 1 ) r *= x; - E >>= 1; - if( E==0 ) break; - x *= x; - } - return r; -#endif + return h; +} + +/* Double-Double multiplication. (x[0],x[1]) *= (y,yy) +** +** Reference: +** T. J. Dekker, "A Floating-Point Technique for Extending the +** Available Precision". 1971-07-26. +*/ +static void dekkerMul2(volatile double *x, double y, double yy){ + /* + ** The "volatile" keywords on parameter x[] and on local variables + ** below are needed force intermediate results to be truncated to + ** binary64 rather than be carried around in an extended-precision + ** format. The truncation is necessary for the Dekker algorithm to + ** work. Intel x86 floating point might omit the truncation without + ** the use of volatile. + */ + volatile double tx, ty, p, q, c, cc; + double hx, hy; + u64 m; + memcpy(&m, (void*)&x[0], 8); + m &= 0xfffffffffc000000LL; + memcpy(&hx, &m, 8); + tx = x[0] - hx; + memcpy(&m, &y, 8); + m &= 0xfffffffffc000000LL; + memcpy(&hy, &m, 8); + ty = y - hy; + p = hx*hy; + q = hx*ty + tx*hy; + c = p+q; + cc = p - c + q + tx*ty; + cc = x[0]*yy + x[1]*y + cc; + x[0] = c + cc; + x[1] = c - x[0]; + x[1] += cc; } /* @@ -29739,8 +34607,15 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){ ** uses the encoding enc. The string is not necessarily zero-terminated. ** ** Return TRUE if the result is a valid real number (or integer) and FALSE -** if the string is empty or contains extraneous text. Valid numbers -** are in one of these formats: +** if the string is empty or contains extraneous text. More specifically +** return +** 1 => The input string is a pure integer +** 2 or more => The input has a decimal point or eNNN clause +** 0 or less => The input string is not a valid number +** -1 => Not a valid number, but has a valid prefix which +** includes a decimal point and/or an eNNN clause +** +** Valid numbers are in one of these formats: ** ** [+-]digits[E[+-]digits] ** [+-]digits.[digits][E[+-]digits] @@ -29753,32 +34628,39 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){ ** returns FALSE but it still converts the prefix and writes the result ** into *pResult. */ +#if defined(_MSC_VER) +#pragma warning(disable : 4756) +#endif SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 enc){ #ifndef SQLITE_OMIT_FLOATING_POINT int incr; - const char *zEnd = z + length; + const char *zEnd; /* sign * significand * (10 ^ (esign * exponent)) */ int sign = 1; /* sign of significand */ - i64 s = 0; /* significand */ + u64 s = 0; /* significand */ int d = 0; /* adjust exponent for shifting decimal point */ int esign = 1; /* sign of exponent */ int e = 0; /* exponent */ int eValid = 1; /* True exponent is either not used or is well-formed */ - double result; - int nDigits = 0; - int nonNum = 0; /* True if input contains UTF16 with high byte non-zero */ + int nDigit = 0; /* Number of digits processed */ + int eType = 1; /* 1: pure integer, 2+: fractional -1 or less: bad UTF16 */ assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE ); *pResult = 0.0; /* Default return value, in case of an error */ + if( length==0 ) return 0; if( enc==SQLITE_UTF8 ){ incr = 1; + zEnd = z + length; }else{ int i; incr = 2; + length &= ~1; assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); + testcase( enc==SQLITE_UTF16LE ); + testcase( enc==SQLITE_UTF16BE ); for(i=3-enc; i=((LARGEST_UINT64-9)/10) ){ + /* skip non-significant significand digits + ** (increase exponent by d to shift decimal left) */ + while( z=zEnd ) goto do_atof_calc; /* if decimal point is present */ if( *z=='.' ){ z+=incr; + eType++; /* copy digits from after decimal to significand ** (decrease exponent by d to shift decimal right) */ while( z=zEnd ) goto do_atof_calc; @@ -29825,8 +34710,9 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en if( *z=='e' || *z=='E' ){ z+=incr; eValid = 0; + eType++; - /* This branch is needed to avoid a (harmless) buffer overread. The + /* This branch is needed to avoid a (harmless) buffer overread. The ** special comment alerts the mutation tester that the correct answer ** is obtained even if the branch is omitted */ if( z>=zEnd ) goto do_atof_calc; /*PREVENTS-HARMLESS-OVERREAD*/ @@ -29850,84 +34736,133 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en while( z0 && s<(LARGEST_UINT64/10) ){ + s *= 10; + e--; + } + while( e<0 && (s%10)==0 ){ + s /= 10; + e++; } - if( s==0 ) { - /* In the IEEE 754 standard, zero is signed. */ - result = sign<0 ? -(double)0 : (double)0; - } else { - /* Attempt to reduce exponent. - ** - ** Branches that are not required for the correct answer but which only - ** help to obtain the correct answer faster are marked with special - ** comments, as a hint to the mutation tester. - */ - while( e>0 ){ /*OPTIMIZATION-IF-TRUE*/ - if( esign>0 ){ - if( s>=(LARGEST_INT64/10) ) break; /*OPTIMIZATION-IF-FALSE*/ - s *= 10; - }else{ - if( s%10!=0 ) break; /*OPTIMIZATION-IF-FALSE*/ - s /= 10; - } - e--; - } - - /* adjust the sign of significand */ - s = sign<0 ? -s : s; - - if( e==0 ){ /*OPTIMIZATION-IF-TRUE*/ - result = (double)s; + if( e==0 ){ + *pResult = s; + }else if( sqlite3Config.bUseLongDouble ){ + LONGDOUBLE_TYPE r = (LONGDOUBLE_TYPE)s; + if( e>0 ){ + while( e>=100 ){ e-=100; r *= 1.0e+100L; } + while( e>=10 ){ e-=10; r *= 1.0e+10L; } + while( e>=1 ){ e-=1; r *= 1.0e+01L; } }else{ - /* attempt to handle extremely small/large numbers better */ - if( e>307 ){ /*OPTIMIZATION-IF-TRUE*/ - if( e<342 ){ /*OPTIMIZATION-IF-TRUE*/ - LONGDOUBLE_TYPE scale = sqlite3Pow10(e-308); - if( esign<0 ){ - result = s / scale; - result /= 1.0e+308; - }else{ - result = s * scale; - result *= 1.0e+308; - } - }else{ assert( e>=342 ); - if( esign<0 ){ - result = 0.0*s; - }else{ + while( e<=-100 ){ e+=100; r *= 1.0e-100L; } + while( e<=-10 ){ e+=10; r *= 1.0e-10L; } + while( e<=-1 ){ e+=1; r *= 1.0e-01L; } + } + assert( r>=0.0 ); + if( r>+1.7976931348623157081452742373e+308L ){ #ifdef INFINITY - result = INFINITY*s; + *pResult = +INFINITY; #else - result = 1e308*1e308*s; /* Infinity */ + *pResult = 1.0e308*10.0; #endif - } - } - }else{ - LONGDOUBLE_TYPE scale = sqlite3Pow10(e); - if( esign<0 ){ - result = s / scale; - }else{ - result = s * scale; - } + }else{ + *pResult = (double)r; + } + }else{ + double rr[2]; + u64 s2; + rr[0] = (double)s; + s2 = (u64)rr[0]; + rr[1] = s>=s2 ? (double)(s - s2) : -(double)(s2 - s); + if( e>0 ){ + while( e>=100 ){ + e -= 100; + dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83); + } + while( e>=10 ){ + e -= 10; + dekkerMul2(rr, 1.0e+10, 0.0); + } + while( e>=1 ){ + e -= 1; + dekkerMul2(rr, 1.0e+01, 0.0); + } + }else{ + while( e<=-100 ){ + e += 100; + dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117); + } + while( e<=-10 ){ + e += 10; + dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27); + } + while( e<=-1 ){ + e += 1; + dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18); } } + *pResult = rr[0]+rr[1]; + if( sqlite3IsNaN(*pResult) ) *pResult = 1e300*1e300; } + if( sign<0 ) *pResult = -*pResult; + assert( !sqlite3IsNaN(*pResult) ); - /* store the result */ - *pResult = result; - - /* return true if number and no extra non-whitespace chracters after */ - return z==zEnd && nDigits>0 && eValid && nonNum==0; +atof_return: + /* return true if number and no extra non-whitespace characters after */ + if( z==zEnd && nDigit>0 && eValid && eType>0 ){ + return eType; + }else if( eType>=2 && (eType==3 || eValid) && nDigit>0 ){ + return -1; + }else{ + return 0; + } #else return !sqlite3Atoi64(z, pResult, length, enc); #endif /* SQLITE_OMIT_FLOATING_POINT */ } +#if defined(_MSC_VER) +#pragma warning(default : 4756) +#endif + +/* +** Render an signed 64-bit integer as text. Store the result in zOut[] and +** return the length of the string that was stored, in bytes. The value +** returned does not include the zero terminator at the end of the output +** string. +** +** The caller must ensure that zOut[] is at least 21 bytes in size. +*/ +SQLITE_PRIVATE int sqlite3Int64ToText(i64 v, char *zOut){ + int i; + u64 x; + char zTemp[22]; + if( v<0 ){ + x = (v==SMALLEST_INT64) ? ((u64)1)<<63 : (u64)-v; + }else{ + x = v; + } + i = sizeof(zTemp)-2; + zTemp[sizeof(zTemp)-1] = 0; + while( 1 /*exit-by-break*/ ){ + zTemp[i] = (x%10) + '0'; + x = x/10; + if( x==0 ) break; + i--; + }; + if( v<0 ) zTemp[--i] = '-'; + memcpy(zOut, &zTemp[i], sizeof(zTemp)-i); + return sizeof(zTemp)-1-i; +} /* ** Compare the 19-character string zNum against the text representation @@ -29966,6 +34901,7 @@ static int compare2pow63(const char *zNum, int incr){ ** ** Returns: ** +** -1 Not even a prefix of the input text looks like an integer ** 0 Successful transformation. Fits in a 64-bit signed integer. ** 1 Excess non-space text after the integer value ** 2 Integer too large for a 64-bit signed integer or is malformed @@ -29990,6 +34926,7 @@ SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc incr = 1; }else{ incr = 2; + length &= ~1; assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); for(i=3-enc; i16 ) return 2; + if( z[k]!=0 ) return 1; + return 0; }else #endif /* SQLITE_OMIT_HEX_INTEGER */ { - return sqlite3Atoi64(z, pOut, sqlite3Strlen30(z), SQLITE_UTF8); + int n = (int)(0x3fffffff&strspn(z,"+- \n\t0123456789")); + if( z[n] ) n++; + return sqlite3Atoi64(z, pOut, n, SQLITE_UTF8); } } @@ -30125,7 +35066,7 @@ SQLITE_PRIVATE int sqlite3GetInt32(const char *zNum, int *pValue){ u32 u = 0; zNum += 2; while( zNum[0]=='0' ) zNum++; - for(i=0; sqlite3Isxdigit(zNum[i]) && i<8; i++){ + for(i=0; i<8 && sqlite3Isxdigit(zNum[i]); i++){ u = u*16 + sqlite3HexToInt(zNum[i]); } if( (u&0x80000000)==0 && sqlite3Isxdigit(zNum[i])==0 ){ @@ -30168,10 +35109,175 @@ SQLITE_PRIVATE int sqlite3GetInt32(const char *zNum, int *pValue){ */ SQLITE_PRIVATE int sqlite3Atoi(const char *z){ int x = 0; - if( z ) sqlite3GetInt32(z, &x); + sqlite3GetInt32(z, &x); return x; } +/* +** Decode a floating-point value into an approximate decimal +** representation. +** +** Round the decimal representation to n significant digits if +** n is positive. Or round to -n signficant digits after the +** decimal point if n is negative. No rounding is performed if +** n is zero. +** +** The significant digits of the decimal representation are +** stored in p->z[] which is a often (but not always) a pointer +** into the middle of p->zBuf[]. There are p->n significant digits. +** The p->z[] array is *not* zero-terminated. +*/ +SQLITE_PRIVATE void sqlite3FpDecode(FpDecode *p, double r, int iRound, int mxRound){ + int i; + u64 v; + int e, exp = 0; + p->isSpecial = 0; + p->z = p->zBuf; + + /* Convert negative numbers to positive. Deal with Infinity, 0.0, and + ** NaN. */ + if( r<0.0 ){ + p->sign = '-'; + r = -r; + }else if( r==0.0 ){ + p->sign = '+'; + p->n = 1; + p->iDP = 1; + p->z = "0"; + return; + }else{ + p->sign = '+'; + } + memcpy(&v,&r,8); + e = v>>52; + if( (e&0x7ff)==0x7ff ){ + p->isSpecial = 1 + (v!=0x7ff0000000000000LL); + p->n = 0; + p->iDP = 0; + return; + } + + /* Multiply r by powers of ten until it lands somewhere in between + ** 1.0e+19 and 1.0e+17. + */ + if( sqlite3Config.bUseLongDouble ){ + LONGDOUBLE_TYPE rr = r; + if( rr>=1.0e+19 ){ + while( rr>=1.0e+119L ){ exp+=100; rr *= 1.0e-100L; } + while( rr>=1.0e+29L ){ exp+=10; rr *= 1.0e-10L; } + while( rr>=1.0e+19L ){ exp++; rr *= 1.0e-1L; } + }else{ + while( rr<1.0e-97L ){ exp-=100; rr *= 1.0e+100L; } + while( rr<1.0e+07L ){ exp-=10; rr *= 1.0e+10L; } + while( rr<1.0e+17L ){ exp--; rr *= 1.0e+1L; } + } + v = (u64)rr; + }else{ + /* If high-precision floating point is not available using "long double", + ** then use Dekker-style double-double computation to increase the + ** precision. + ** + ** The error terms on constants like 1.0e+100 computed using the + ** decimal extension, for example as follows: + ** + ** SELECT decimal_exp(decimal_sub('1.0e+100',decimal(1.0e+100))); + */ + double rr[2]; + rr[0] = r; + rr[1] = 0.0; + if( rr[0]>1.84e+19 ){ + while( rr[0]>1.84e+119 ){ + exp += 100; + dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117); + } + while( rr[0]>1.84e+29 ){ + exp += 10; + dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27); + } + while( rr[0]>1.84e+19 ){ + exp += 1; + dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18); + } + }else{ + while( rr[0]<1.84e-82 ){ + exp -= 100; + dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83); + } + while( rr[0]<1.84e+08 ){ + exp -= 10; + dekkerMul2(rr, 1.0e+10, 0.0); + } + while( rr[0]<1.84e+18 ){ + exp -= 1; + dekkerMul2(rr, 1.0e+01, 0.0); + } + } + v = rr[1]<0.0 ? (u64)rr[0]-(u64)(-rr[1]) : (u64)rr[0]+(u64)rr[1]; + } + + + /* Extract significant digits. */ + i = sizeof(p->zBuf)-1; + assert( v>0 ); + while( v ){ p->zBuf[i--] = (v%10) + '0'; v /= 10; } + assert( i>=0 && izBuf)-1 ); + p->n = sizeof(p->zBuf) - 1 - i; + assert( p->n>0 ); + assert( p->nzBuf) ); + p->iDP = p->n + exp; + if( iRound<0 ){ + iRound = p->iDP - iRound; + if( iRound==0 && p->zBuf[i+1]>='5' ){ + iRound = 1; + p->zBuf[i--] = '0'; + p->n++; + p->iDP++; + } + } + if( iRound>0 && (iRoundn || p->n>mxRound) ){ + char *z = &p->zBuf[i+1]; + if( iRound>mxRound ) iRound = mxRound; + p->n = iRound; + if( z[iRound]>='5' ){ + int j = iRound-1; + while( 1 /*exit-by-break*/ ){ + z[j]++; + if( z[j]<='9' ) break; + z[j] = '0'; + if( j==0 ){ + p->z[i--] = '1'; + p->n++; + p->iDP++; + break; + }else{ + j--; + } + } + } + } + p->z = &p->zBuf[i+1]; + assert( i+p->n < sizeof(p->zBuf) ); + while( ALWAYS(p->n>0) && p->z[p->n-1]=='0' ){ p->n--; } +} + +/* +** Try to convert z into an unsigned 32-bit integer. Return true on +** success and false if there is an error. +** +** Only decimal notation is accepted. +*/ +SQLITE_PRIVATE int sqlite3GetUInt32(const char *z, u32 *pI){ + u64 v = 0; + int i; + for(i=0; sqlite3Isdigit(z[i]); i++){ + v = v*10 + z[i] - '0'; + if( v>4294967296LL ){ *pI = 0; return 0; } + } + if( i==0 || z[i]!=0 ){ *pI = 0; return 0; } + *pI = (u32)v; + return 1; +} + /* ** The variable-length integer encoding is as follows: ** @@ -30212,7 +35318,7 @@ static int SQLITE_NOINLINE putVarint64(unsigned char *p, u64 v){ v >>= 7; } return 9; - } + } n = 0; do{ buf[n++] = (u8)((v & 0x7f) | 0x80); @@ -30258,23 +35364,12 @@ SQLITE_PRIVATE int sqlite3PutVarint(unsigned char *p, u64 v){ SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *p, u64 *v){ u32 a,b,s; - a = *p; - /* a: p0 (unmasked) */ - if (!(a&0x80)) - { - *v = a; + if( ((signed char*)p)[0]>=0 ){ + *v = *p; return 1; } - - p++; - b = *p; - /* b: p1 (unmasked) */ - if (!(b&0x80)) - { - a &= 0x7f; - a = a<<7; - a |= b; - *v = a; + if( ((signed char*)p)[1]>=0 ){ + *v = ((u32)(p[0]&0x7f)<<7) | p[1]; return 2; } @@ -30282,8 +35377,9 @@ SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *p, u64 *v){ assert( SLOT_2_0 == ((0x7f<<14) | (0x7f)) ); assert( SLOT_4_2_0 == ((0xfU<<28) | (0x7f<<14) | (0x7f)) ); - p++; - a = a<<14; + a = ((u32)p[0])<<14; + b = p[1]; + p += 2; a |= *p; /* a: p0<<14 | p2 (unmasked) */ if (!(a&0x80)) @@ -30422,8 +35518,8 @@ SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *p, u64 *v){ ** If the varint stored in p[0] is larger than can fit in a 32-bit unsigned ** integer, then set *v to 0xffffffff. ** -** A MACRO version, getVarint32, is provided which inlines the -** single-byte case. All code should use the MACRO version as +** A MACRO version, getVarint32, is provided which inlines the +** single-byte case. All code should use the MACRO version as ** this function assumes the single-byte case has already been handled. */ SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){ @@ -30484,8 +35580,7 @@ SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){ u64 v64; u8 n; - p -= 2; - n = sqlite3GetVarint(p, &v64); + n = sqlite3GetVarint(p-2, &v64); assert( n>3 && n<=9 ); if( (v64 & SQLITE_MAX_U32)!=v64 ){ *v = 0xffffffff; @@ -30612,7 +35707,7 @@ SQLITE_PRIVATE u8 sqlite3HexToInt(int h){ return (u8)(h & 0xf); } -#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC) +#if !defined(SQLITE_OMIT_BLOB_LITERAL) /* ** Convert a BLOB literal of the form "x'hhhhhh'" into its binary ** value. Return a pointer to its binary value. Space to hold the @@ -30633,7 +35728,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){ } return zBlob; } -#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */ +#endif /* !SQLITE_OMIT_BLOB_LITERAL */ /* ** Log an error that is an API call on a connection pointer that should @@ -30641,7 +35736,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){ ** argument. The zType is a word like "NULL" or "closed" or "invalid". */ static void logBadConnection(const char *zType){ - sqlite3_log(SQLITE_MISUSE, + sqlite3_log(SQLITE_MISUSE, "API call with %s database connection pointer", zType ); @@ -30662,13 +35757,13 @@ static void logBadConnection(const char *zType){ ** used as an argument to sqlite3_errmsg() or sqlite3_close(). */ SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3 *db){ - u32 magic; + u8 eOpenState; if( db==0 ){ logBadConnection("NULL"); return 0; } - magic = db->magic; - if( magic!=SQLITE_MAGIC_OPEN ){ + eOpenState = db->eOpenState; + if( eOpenState!=SQLITE_STATE_OPEN ){ if( sqlite3SafetyCheckSickOrOk(db) ){ testcase( sqlite3GlobalConfig.xLog!=0 ); logBadConnection("unopened"); @@ -30679,11 +35774,11 @@ SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3 *db){ } } SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3 *db){ - u32 magic; - magic = db->magic; - if( magic!=SQLITE_MAGIC_SICK && - magic!=SQLITE_MAGIC_OPEN && - magic!=SQLITE_MAGIC_BUSY ){ + u8 eOpenState; + eOpenState = db->eOpenState; + if( eOpenState!=SQLITE_STATE_SICK && + eOpenState!=SQLITE_STATE_OPEN && + eOpenState!=SQLITE_STATE_BUSY ){ testcase( sqlite3GlobalConfig.xLog!=0 ); logBadConnection("invalid"); return 0; @@ -30693,7 +35788,7 @@ SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3 *db){ } /* -** Attempt to add, substract, or multiply the 64-bit signed value iB against +** Attempt to add, subtract, or multiply the 64-bit signed value iB against ** the other 64-bit signed integer at *pA and store the result in *pA. ** Return 0 on success. Or if the operation would have resulted in an ** overflow, leave *pA unchanged and return 1. @@ -30715,7 +35810,7 @@ SQLITE_PRIVATE int sqlite3AddInt64(i64 *pA, i64 iB){ if( iA<0 && -(iA + LARGEST_INT64) > iB + 1 ) return 1; } *pA += iB; - return 0; + return 0; #endif } SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){ @@ -30756,7 +35851,7 @@ SQLITE_PRIVATE int sqlite3MulInt64(i64 *pA, i64 iB){ } /* -** Compute the absolute value of a 32-bit signed integer, of possible. Or +** Compute the absolute value of a 32-bit signed integer, of possible. Or ** if the integer has a value of -2147483648, return +2147483647 */ SQLITE_PRIVATE int sqlite3AbsInt32(int x){ @@ -30796,11 +35891,11 @@ SQLITE_PRIVATE void sqlite3FileSuffix3(const char *zBaseFilename, char *z){ } #endif -/* +/* ** Find (an approximate) sum of two LogEst values. This computation is ** not a simple "+" operator because LogEst is stored as a logarithmic ** value. -** +** */ SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst a, LogEst b){ static const unsigned char x[] = { @@ -30848,7 +35943,6 @@ SQLITE_PRIVATE LogEst sqlite3LogEst(u64 x){ return a[x&7] + y - 10; } -#ifndef SQLITE_OMIT_VIRTUALTABLE /* ** Convert a double into a LogEst ** In other words, compute an approximation for 10*log2(x). @@ -30863,16 +35957,9 @@ SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double x){ e = (a>>52) - 1022; return e*10; } -#endif /* SQLITE_OMIT_VIRTUALTABLE */ -#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ - defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ - defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) /* ** Convert a LogEst into an integer. -** -** Note that this routine is only used when one or more of various -** non-standard compile-time options is enabled. */ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){ u64 n; @@ -30880,17 +35967,9 @@ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){ x /= 10; if( n>=5 ) n -= 2; else if( n>=1 ) n -= 1; -#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ - defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) if( x>60 ) return (u64)LARGEST_INT64; -#else - /* If only SQLITE_ENABLE_STAT3_OR_STAT4 is on, then the largest input - ** possible to this routine is 310, resulting in a maximum x of 31 */ - assert( x<=60 ); -#endif return x>=3 ? (n+8)<<(x-3) : (n+8)>>(3-x); } -#endif /* defined SCANSTAT or STAT4 or ESTIMATED_ROWS */ /* ** Add a new name/number pair to a VList. This might require that the @@ -30914,8 +35993,8 @@ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){ ** Conceptually: ** ** struct VList { -** int nAlloc; // Number of allocated slots -** int nUsed; // Number of used slots +** int nAlloc; // Number of allocated slots +** int nUsed; // Number of used slots ** struct VListEntry { ** int iValue; // Value for this entry ** int nSlot; // Slots used by this entry @@ -30924,7 +36003,7 @@ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){ ** } ** ** During code generation, pointers to the variable names within the -** VList are taken. When that happens, nAlloc is set to zero as an +** VList are taken. When that happens, nAlloc is set to zero as an ** indication that the VList may never again be enlarged, since the ** accompanying realloc() would invalidate the pointers. */ @@ -30943,7 +36022,7 @@ SQLITE_PRIVATE VList *sqlite3VListAdd( assert( pIn==0 || pIn[0]>=3 ); /* Verify ok to add new elements */ if( pIn==0 || pIn[1]+nInt > pIn[0] ){ /* Enlarge the allocation */ - int nAlloc = (pIn ? pIn[0]*2 : 10) + nInt; + sqlite3_int64 nAlloc = (pIn ? 2*(sqlite3_int64)pIn[0] : 10) + nInt; VList *pOut = sqlite3DbRealloc(db, pIn, nAlloc*sizeof(int)); if( pOut==0 ) return pIn; if( pIn==0 ) pOut[1] = 2; @@ -30995,6 +36074,104 @@ SQLITE_PRIVATE int sqlite3VListNameToNum(VList *pIn, const char *zName, int nNam return 0; } +/* +** High-resolution hardware timer used for debugging and testing only. +*/ +#if defined(VDBE_PROFILE) \ + || defined(SQLITE_PERFORMANCE_TRACE) \ + || defined(SQLITE_ENABLE_STMT_SCANSTATUS) +/************** Include hwtime.h in the middle of util.c *********************/ +/************** Begin file hwtime.h ******************************************/ +/* +** 2008 May 27 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains inline asm code for retrieving "high-performance" +** counters for x86 and x86_64 class CPUs. +*/ +#ifndef SQLITE_HWTIME_H +#define SQLITE_HWTIME_H + +/* +** The following routine only works on Pentium-class (or newer) processors. +** It uses the RDTSC opcode to read the cycle count value out of the +** processor and returns that value. This can be used for high-res +** profiling. +*/ +#if !defined(__STRICT_ANSI__) && \ + (defined(__GNUC__) || defined(_MSC_VER)) && \ + (defined(i386) || defined(__i386__) || defined(_M_IX86)) + + #if defined(__GNUC__) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned int lo, hi; + __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); + return (sqlite_uint64)hi << 32 | lo; + } + + #elif defined(_MSC_VER) + + __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ + __asm { + rdtsc + ret ; return value at EDX:EAX + } + } + + #endif + +#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__)) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned int lo, hi; + __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); + return (sqlite_uint64)hi << 32 | lo; + } + +#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__)) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned long long retval; + unsigned long junk; + __asm__ __volatile__ ("\n\ + 1: mftbu %1\n\ + mftb %L0\n\ + mftbu %0\n\ + cmpw %0,%1\n\ + bne 1b" + : "=r" (retval), "=r" (junk)); + return retval; + } + +#else + + /* + ** asm() is needed for hardware timing support. Without asm(), + ** disable the sqlite3Hwtime() routine. + ** + ** sqlite3Hwtime() is only used for some obscure debugging + ** and analysis configurations, not in any deliverable, so this + ** should not be a great loss. + */ +SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } + +#endif + +#endif /* !defined(SQLITE_HWTIME_H) */ + +/************** End of hwtime.h **********************************************/ +/************** Continuing where we left off in util.c ***********************/ +#endif + /************** End of util.c ************************************************/ /************** Begin file hash.c ********************************************/ /* @@ -31096,7 +36273,7 @@ static void insertElement( } -/* Resize the hash table so that it cantains "new_size" buckets. +/* Resize the hash table so that it contains "new_size" buckets. ** ** The hash table might fail to resize if sqlite3_malloc() fails or ** if the new size is the same as the prior size. @@ -31115,7 +36292,7 @@ static int rehash(Hash *pH, unsigned int new_size){ /* The inability to allocates space for a larger hash table is ** a performance hit but it is not a fatal error. So mark the - ** allocation as a benign. Use sqlite3Malloc()/memset(0) instead of + ** allocation as a benign. Use sqlite3Malloc()/memset(0) instead of ** sqlite3MallocZero() to make the allocation, as sqlite3MallocZero() ** only zeroes the requested number of bytes whereas this module will ** use the actual amount of space allocated for the hash table (which @@ -31149,7 +36326,7 @@ static HashElem *findElementWithHash( unsigned int *pHash /* Write the hash value here */ ){ HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ + unsigned int count; /* Number of elements left to test */ unsigned int h; /* The computed hash */ static HashElem nullElement = { 0, 0, 0, 0 }; @@ -31165,12 +36342,13 @@ static HashElem *findElementWithHash( count = pH->count; } if( pHash ) *pHash = h; - while( count-- ){ + while( count ){ assert( elem!=0 ); - if( sqlite3StrICmp(elem->pKey,pKey)==0 ){ + if( sqlite3StrICmp(elem->pKey,pKey)==0 ){ return elem; } elem = elem->next; + count--; } return &nullElement; } @@ -31185,7 +36363,7 @@ static void removeElementGivenHash( ){ struct _ht *pEntry; if( elem->prev ){ - elem->prev->next = elem->next; + elem->prev->next = elem->next; }else{ pH->first = elem->next; } @@ -31197,8 +36375,8 @@ static void removeElementGivenHash( if( pEntry->chain==elem ){ pEntry->chain = elem->next; } + assert( pEntry->count>0 ); pEntry->count--; - assert( pEntry->count>=0 ); } sqlite3_free( elem ); pH->count--; @@ -31284,53 +36462,53 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ /* 0 */ "Savepoint" OpHelp(""), /* 1 */ "AutoCommit" OpHelp(""), /* 2 */ "Transaction" OpHelp(""), - /* 3 */ "SorterNext" OpHelp(""), - /* 4 */ "PrevIfOpen" OpHelp(""), - /* 5 */ "NextIfOpen" OpHelp(""), - /* 6 */ "Prev" OpHelp(""), - /* 7 */ "Next" OpHelp(""), - /* 8 */ "Checkpoint" OpHelp(""), - /* 9 */ "JournalMode" OpHelp(""), - /* 10 */ "Vacuum" OpHelp(""), - /* 11 */ "VFilter" OpHelp("iplan=r[P3] zplan='P4'"), - /* 12 */ "VUpdate" OpHelp("data=r[P3@P2]"), - /* 13 */ "Goto" OpHelp(""), - /* 14 */ "Gosub" OpHelp(""), - /* 15 */ "InitCoroutine" OpHelp(""), - /* 16 */ "Yield" OpHelp(""), - /* 17 */ "MustBeInt" OpHelp(""), - /* 18 */ "Jump" OpHelp(""), + /* 3 */ "Checkpoint" OpHelp(""), + /* 4 */ "JournalMode" OpHelp(""), + /* 5 */ "Vacuum" OpHelp(""), + /* 6 */ "VFilter" OpHelp("iplan=r[P3] zplan='P4'"), + /* 7 */ "VUpdate" OpHelp("data=r[P3@P2]"), + /* 8 */ "Init" OpHelp("Start at P2"), + /* 9 */ "Goto" OpHelp(""), + /* 10 */ "Gosub" OpHelp(""), + /* 11 */ "InitCoroutine" OpHelp(""), + /* 12 */ "Yield" OpHelp(""), + /* 13 */ "MustBeInt" OpHelp(""), + /* 14 */ "Jump" OpHelp(""), + /* 15 */ "Once" OpHelp(""), + /* 16 */ "If" OpHelp(""), + /* 17 */ "IfNot" OpHelp(""), + /* 18 */ "IsType" OpHelp("if typeof(P1.P3) in P5 goto P2"), /* 19 */ "Not" OpHelp("r[P2]= !r[P1]"), - /* 20 */ "Once" OpHelp(""), - /* 21 */ "If" OpHelp(""), - /* 22 */ "IfNot" OpHelp(""), - /* 23 */ "IfNullRow" OpHelp("if P1.nullRow then r[P3]=NULL, goto P2"), - /* 24 */ "SeekLT" OpHelp("key=r[P3@P4]"), - /* 25 */ "SeekLE" OpHelp("key=r[P3@P4]"), - /* 26 */ "SeekGE" OpHelp("key=r[P3@P4]"), - /* 27 */ "SeekGT" OpHelp("key=r[P3@P4]"), - /* 28 */ "NoConflict" OpHelp("key=r[P3@P4]"), - /* 29 */ "NotFound" OpHelp("key=r[P3@P4]"), - /* 30 */ "Found" OpHelp("key=r[P3@P4]"), - /* 31 */ "SeekRowid" OpHelp("intkey=r[P3]"), - /* 32 */ "NotExists" OpHelp("intkey=r[P3]"), - /* 33 */ "Last" OpHelp(""), - /* 34 */ "IfSmaller" OpHelp(""), - /* 35 */ "SorterSort" OpHelp(""), - /* 36 */ "Sort" OpHelp(""), - /* 37 */ "Rewind" OpHelp(""), - /* 38 */ "IdxLE" OpHelp("key=r[P3@P4]"), - /* 39 */ "IdxGT" OpHelp("key=r[P3@P4]"), - /* 40 */ "IdxLT" OpHelp("key=r[P3@P4]"), - /* 41 */ "IdxGE" OpHelp("key=r[P3@P4]"), - /* 42 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"), + /* 20 */ "IfNullRow" OpHelp("if P1.nullRow then r[P3]=NULL, goto P2"), + /* 21 */ "SeekLT" OpHelp("key=r[P3@P4]"), + /* 22 */ "SeekLE" OpHelp("key=r[P3@P4]"), + /* 23 */ "SeekGE" OpHelp("key=r[P3@P4]"), + /* 24 */ "SeekGT" OpHelp("key=r[P3@P4]"), + /* 25 */ "IfNotOpen" OpHelp("if( !csr[P1] ) goto P2"), + /* 26 */ "IfNoHope" OpHelp("key=r[P3@P4]"), + /* 27 */ "NoConflict" OpHelp("key=r[P3@P4]"), + /* 28 */ "NotFound" OpHelp("key=r[P3@P4]"), + /* 29 */ "Found" OpHelp("key=r[P3@P4]"), + /* 30 */ "SeekRowid" OpHelp("intkey=r[P3]"), + /* 31 */ "NotExists" OpHelp("intkey=r[P3]"), + /* 32 */ "Last" OpHelp(""), + /* 33 */ "IfSmaller" OpHelp(""), + /* 34 */ "SorterSort" OpHelp(""), + /* 35 */ "Sort" OpHelp(""), + /* 36 */ "Rewind" OpHelp(""), + /* 37 */ "SorterNext" OpHelp(""), + /* 38 */ "Prev" OpHelp(""), + /* 39 */ "Next" OpHelp(""), + /* 40 */ "IdxLE" OpHelp("key=r[P3@P4]"), + /* 41 */ "IdxGT" OpHelp("key=r[P3@P4]"), + /* 42 */ "IdxLT" OpHelp("key=r[P3@P4]"), /* 43 */ "Or" OpHelp("r[P3]=(r[P1] || r[P2])"), /* 44 */ "And" OpHelp("r[P3]=(r[P1] && r[P2])"), - /* 45 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"), - /* 46 */ "Program" OpHelp(""), - /* 47 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"), - /* 48 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"), - /* 49 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]--, goto P2"), + /* 45 */ "IdxGE" OpHelp("key=r[P3@P4]"), + /* 46 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"), + /* 47 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"), + /* 48 */ "Program" OpHelp(""), + /* 49 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"), /* 50 */ "IsNull" OpHelp("if r[P1]==NULL goto P2"), /* 51 */ "NotNull" OpHelp("if r[P1]!=NULL goto P2"), /* 52 */ "Ne" OpHelp("IF r[P3]!=r[P1]"), @@ -31339,126 +36517,1123 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ /* 55 */ "Le" OpHelp("IF r[P3]<=r[P1]"), /* 56 */ "Lt" OpHelp("IF r[P3]=r[P1]"), - /* 58 */ "ElseNotEq" OpHelp(""), - /* 59 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"), - /* 60 */ "IncrVacuum" OpHelp(""), - /* 61 */ "VNext" OpHelp(""), - /* 62 */ "Init" OpHelp("Start at P2"), - /* 63 */ "Return" OpHelp(""), - /* 64 */ "EndCoroutine" OpHelp(""), - /* 65 */ "HaltIfNull" OpHelp("if r[P3]=null halt"), - /* 66 */ "Halt" OpHelp(""), - /* 67 */ "Integer" OpHelp("r[P2]=P1"), - /* 68 */ "Int64" OpHelp("r[P2]=P4"), - /* 69 */ "String" OpHelp("r[P2]='P4' (len=P1)"), - /* 70 */ "Null" OpHelp("r[P2..P3]=NULL"), - /* 71 */ "SoftNull" OpHelp("r[P1]=NULL"), - /* 72 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"), - /* 73 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"), - /* 74 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"), - /* 75 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"), - /* 76 */ "SCopy" OpHelp("r[P2]=r[P1]"), - /* 77 */ "IntCopy" OpHelp("r[P2]=r[P1]"), - /* 78 */ "ResultRow" OpHelp("output=r[P1@P2]"), - /* 79 */ "CollSeq" OpHelp(""), - /* 80 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"), - /* 81 */ "RealAffinity" OpHelp(""), - /* 82 */ "Cast" OpHelp("affinity(r[P1])"), - /* 83 */ "Permutation" OpHelp(""), - /* 84 */ "Compare" OpHelp("r[P1@P3] <-> r[P2@P3]"), - /* 85 */ "BitAnd" OpHelp("r[P3]=r[P1]&r[P2]"), - /* 86 */ "BitOr" OpHelp("r[P3]=r[P1]|r[P2]"), - /* 87 */ "ShiftLeft" OpHelp("r[P3]=r[P2]<>r[P1]"), - /* 89 */ "Add" OpHelp("r[P3]=r[P1]+r[P2]"), - /* 90 */ "Subtract" OpHelp("r[P3]=r[P2]-r[P1]"), - /* 91 */ "Multiply" OpHelp("r[P3]=r[P1]*r[P2]"), - /* 92 */ "Divide" OpHelp("r[P3]=r[P2]/r[P1]"), - /* 93 */ "Remainder" OpHelp("r[P3]=r[P2]%r[P1]"), - /* 94 */ "Concat" OpHelp("r[P3]=r[P2]+r[P1]"), - /* 95 */ "IsTrue" OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"), - /* 96 */ "BitNot" OpHelp("r[P1]= ~r[P1]"), - /* 97 */ "Offset" OpHelp("r[P3] = sqlite_offset(P1)"), - /* 98 */ "Column" OpHelp("r[P3]=PX"), - /* 99 */ "String8" OpHelp("r[P2]='P4'"), - /* 100 */ "Affinity" OpHelp("affinity(r[P1@P2])"), - /* 101 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"), - /* 102 */ "Count" OpHelp("r[P2]=count()"), - /* 103 */ "ReadCookie" OpHelp(""), - /* 104 */ "SetCookie" OpHelp(""), - /* 105 */ "ReopenIdx" OpHelp("root=P2 iDb=P3"), - /* 106 */ "OpenRead" OpHelp("root=P2 iDb=P3"), - /* 107 */ "OpenWrite" OpHelp("root=P2 iDb=P3"), - /* 108 */ "OpenDup" OpHelp(""), - /* 109 */ "OpenAutoindex" OpHelp("nColumn=P2"), - /* 110 */ "OpenEphemeral" OpHelp("nColumn=P2"), - /* 111 */ "SorterOpen" OpHelp(""), - /* 112 */ "SequenceTest" OpHelp("if( cursor[P1].ctr++ ) pc = P2"), - /* 113 */ "OpenPseudo" OpHelp("P3 columns in r[P2]"), - /* 114 */ "Close" OpHelp(""), - /* 115 */ "ColumnsUsed" OpHelp(""), - /* 116 */ "Sequence" OpHelp("r[P2]=cursor[P1].ctr++"), - /* 117 */ "NewRowid" OpHelp("r[P2]=rowid"), - /* 118 */ "Insert" OpHelp("intkey=r[P3] data=r[P2]"), - /* 119 */ "InsertInt" OpHelp("intkey=P3 data=r[P2]"), - /* 120 */ "Delete" OpHelp(""), - /* 121 */ "ResetCount" OpHelp(""), - /* 122 */ "SorterCompare" OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"), - /* 123 */ "SorterData" OpHelp("r[P2]=data"), - /* 124 */ "RowData" OpHelp("r[P2]=data"), - /* 125 */ "Rowid" OpHelp("r[P2]=rowid"), - /* 126 */ "NullRow" OpHelp(""), - /* 127 */ "SeekEnd" OpHelp(""), - /* 128 */ "SorterInsert" OpHelp("key=r[P2]"), - /* 129 */ "IdxInsert" OpHelp("key=r[P2]"), - /* 130 */ "IdxDelete" OpHelp("key=r[P2@P3]"), - /* 131 */ "DeferredSeek" OpHelp("Move P3 to P1.rowid if needed"), - /* 132 */ "IdxRowid" OpHelp("r[P2]=rowid"), - /* 133 */ "Destroy" OpHelp(""), - /* 134 */ "Real" OpHelp("r[P2]=P4"), - /* 135 */ "Clear" OpHelp(""), - /* 136 */ "ResetSorter" OpHelp(""), - /* 137 */ "CreateBtree" OpHelp("r[P2]=root iDb=P1 flags=P3"), - /* 138 */ "SqlExec" OpHelp(""), - /* 139 */ "ParseSchema" OpHelp(""), - /* 140 */ "LoadAnalysis" OpHelp(""), - /* 141 */ "DropTable" OpHelp(""), - /* 142 */ "DropIndex" OpHelp(""), - /* 143 */ "DropTrigger" OpHelp(""), - /* 144 */ "IntegrityCk" OpHelp(""), - /* 145 */ "RowSetAdd" OpHelp("rowset(P1)=r[P2]"), - /* 146 */ "Param" OpHelp(""), - /* 147 */ "FkCounter" OpHelp("fkctr[P1]+=P2"), - /* 148 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"), - /* 149 */ "OffsetLimit" OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"), - /* 150 */ "AggStep0" OpHelp("accum=r[P3] step(r[P2@P5])"), - /* 151 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"), - /* 152 */ "AggFinal" OpHelp("accum=r[P1] N=P2"), - /* 153 */ "Expire" OpHelp(""), - /* 154 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"), - /* 155 */ "VBegin" OpHelp(""), - /* 156 */ "VCreate" OpHelp(""), - /* 157 */ "VDestroy" OpHelp(""), - /* 158 */ "VOpen" OpHelp(""), - /* 159 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"), - /* 160 */ "VRename" OpHelp(""), - /* 161 */ "Pagecount" OpHelp(""), - /* 162 */ "MaxPgcnt" OpHelp(""), - /* 163 */ "PureFunc0" OpHelp(""), - /* 164 */ "Function0" OpHelp("r[P3]=func(r[P2@P5])"), - /* 165 */ "PureFunc" OpHelp(""), - /* 166 */ "Function" OpHelp("r[P3]=func(r[P2@P5])"), - /* 167 */ "Trace" OpHelp(""), - /* 168 */ "CursorHint" OpHelp(""), - /* 169 */ "Noop" OpHelp(""), - /* 170 */ "Explain" OpHelp(""), - /* 171 */ "Abortable" OpHelp(""), + /* 58 */ "ElseEq" OpHelp(""), + /* 59 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"), + /* 60 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]--, goto P2"), + /* 61 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"), + /* 62 */ "IncrVacuum" OpHelp(""), + /* 63 */ "VNext" OpHelp(""), + /* 64 */ "Filter" OpHelp("if key(P3@P4) not in filter(P1) goto P2"), + /* 65 */ "PureFunc" OpHelp("r[P3]=func(r[P2@NP])"), + /* 66 */ "Function" OpHelp("r[P3]=func(r[P2@NP])"), + /* 67 */ "Return" OpHelp(""), + /* 68 */ "EndCoroutine" OpHelp(""), + /* 69 */ "HaltIfNull" OpHelp("if r[P3]=null halt"), + /* 70 */ "Halt" OpHelp(""), + /* 71 */ "Integer" OpHelp("r[P2]=P1"), + /* 72 */ "Int64" OpHelp("r[P2]=P4"), + /* 73 */ "String" OpHelp("r[P2]='P4' (len=P1)"), + /* 74 */ "BeginSubrtn" OpHelp("r[P2]=NULL"), + /* 75 */ "Null" OpHelp("r[P2..P3]=NULL"), + /* 76 */ "SoftNull" OpHelp("r[P1]=NULL"), + /* 77 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"), + /* 78 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"), + /* 79 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"), + /* 80 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"), + /* 81 */ "SCopy" OpHelp("r[P2]=r[P1]"), + /* 82 */ "IntCopy" OpHelp("r[P2]=r[P1]"), + /* 83 */ "FkCheck" OpHelp(""), + /* 84 */ "ResultRow" OpHelp("output=r[P1@P2]"), + /* 85 */ "CollSeq" OpHelp(""), + /* 86 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"), + /* 87 */ "RealAffinity" OpHelp(""), + /* 88 */ "Cast" OpHelp("affinity(r[P1])"), + /* 89 */ "Permutation" OpHelp(""), + /* 90 */ "Compare" OpHelp("r[P1@P3] <-> r[P2@P3]"), + /* 91 */ "IsTrue" OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"), + /* 92 */ "ZeroOrNull" OpHelp("r[P2] = 0 OR NULL"), + /* 93 */ "Offset" OpHelp("r[P3] = sqlite_offset(P1)"), + /* 94 */ "Column" OpHelp("r[P3]=PX cursor P1 column P2"), + /* 95 */ "TypeCheck" OpHelp("typecheck(r[P1@P2])"), + /* 96 */ "Affinity" OpHelp("affinity(r[P1@P2])"), + /* 97 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"), + /* 98 */ "Count" OpHelp("r[P2]=count()"), + /* 99 */ "ReadCookie" OpHelp(""), + /* 100 */ "SetCookie" OpHelp(""), + /* 101 */ "ReopenIdx" OpHelp("root=P2 iDb=P3"), + /* 102 */ "BitAnd" OpHelp("r[P3]=r[P1]&r[P2]"), + /* 103 */ "BitOr" OpHelp("r[P3]=r[P1]|r[P2]"), + /* 104 */ "ShiftLeft" OpHelp("r[P3]=r[P2]<>r[P1]"), + /* 106 */ "Add" OpHelp("r[P3]=r[P1]+r[P2]"), + /* 107 */ "Subtract" OpHelp("r[P3]=r[P2]-r[P1]"), + /* 108 */ "Multiply" OpHelp("r[P3]=r[P1]*r[P2]"), + /* 109 */ "Divide" OpHelp("r[P3]=r[P2]/r[P1]"), + /* 110 */ "Remainder" OpHelp("r[P3]=r[P2]%r[P1]"), + /* 111 */ "Concat" OpHelp("r[P3]=r[P2]+r[P1]"), + /* 112 */ "OpenRead" OpHelp("root=P2 iDb=P3"), + /* 113 */ "OpenWrite" OpHelp("root=P2 iDb=P3"), + /* 114 */ "BitNot" OpHelp("r[P2]= ~r[P1]"), + /* 115 */ "OpenDup" OpHelp(""), + /* 116 */ "OpenAutoindex" OpHelp("nColumn=P2"), + /* 117 */ "String8" OpHelp("r[P2]='P4'"), + /* 118 */ "OpenEphemeral" OpHelp("nColumn=P2"), + /* 119 */ "SorterOpen" OpHelp(""), + /* 120 */ "SequenceTest" OpHelp("if( cursor[P1].ctr++ ) pc = P2"), + /* 121 */ "OpenPseudo" OpHelp("P3 columns in r[P2]"), + /* 122 */ "Close" OpHelp(""), + /* 123 */ "ColumnsUsed" OpHelp(""), + /* 124 */ "SeekScan" OpHelp("Scan-ahead up to P1 rows"), + /* 125 */ "SeekHit" OpHelp("set P2<=seekHit<=P3"), + /* 126 */ "Sequence" OpHelp("r[P2]=cursor[P1].ctr++"), + /* 127 */ "NewRowid" OpHelp("r[P2]=rowid"), + /* 128 */ "Insert" OpHelp("intkey=r[P3] data=r[P2]"), + /* 129 */ "RowCell" OpHelp(""), + /* 130 */ "Delete" OpHelp(""), + /* 131 */ "ResetCount" OpHelp(""), + /* 132 */ "SorterCompare" OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"), + /* 133 */ "SorterData" OpHelp("r[P2]=data"), + /* 134 */ "RowData" OpHelp("r[P2]=data"), + /* 135 */ "Rowid" OpHelp("r[P2]=PX rowid of P1"), + /* 136 */ "NullRow" OpHelp(""), + /* 137 */ "SeekEnd" OpHelp(""), + /* 138 */ "IdxInsert" OpHelp("key=r[P2]"), + /* 139 */ "SorterInsert" OpHelp("key=r[P2]"), + /* 140 */ "IdxDelete" OpHelp("key=r[P2@P3]"), + /* 141 */ "DeferredSeek" OpHelp("Move P3 to P1.rowid if needed"), + /* 142 */ "IdxRowid" OpHelp("r[P2]=rowid"), + /* 143 */ "FinishSeek" OpHelp(""), + /* 144 */ "Destroy" OpHelp(""), + /* 145 */ "Clear" OpHelp(""), + /* 146 */ "ResetSorter" OpHelp(""), + /* 147 */ "CreateBtree" OpHelp("r[P2]=root iDb=P1 flags=P3"), + /* 148 */ "SqlExec" OpHelp(""), + /* 149 */ "ParseSchema" OpHelp(""), + /* 150 */ "LoadAnalysis" OpHelp(""), + /* 151 */ "DropTable" OpHelp(""), + /* 152 */ "DropIndex" OpHelp(""), + /* 153 */ "Real" OpHelp("r[P2]=P4"), + /* 154 */ "DropTrigger" OpHelp(""), + /* 155 */ "IntegrityCk" OpHelp(""), + /* 156 */ "RowSetAdd" OpHelp("rowset(P1)=r[P2]"), + /* 157 */ "Param" OpHelp(""), + /* 158 */ "FkCounter" OpHelp("fkctr[P1]+=P2"), + /* 159 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"), + /* 160 */ "OffsetLimit" OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"), + /* 161 */ "AggInverse" OpHelp("accum=r[P3] inverse(r[P2@P5])"), + /* 162 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"), + /* 163 */ "AggStep1" OpHelp("accum=r[P3] step(r[P2@P5])"), + /* 164 */ "AggValue" OpHelp("r[P3]=value N=P2"), + /* 165 */ "AggFinal" OpHelp("accum=r[P1] N=P2"), + /* 166 */ "Expire" OpHelp(""), + /* 167 */ "CursorLock" OpHelp(""), + /* 168 */ "CursorUnlock" OpHelp(""), + /* 169 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"), + /* 170 */ "VBegin" OpHelp(""), + /* 171 */ "VCreate" OpHelp(""), + /* 172 */ "VDestroy" OpHelp(""), + /* 173 */ "VOpen" OpHelp(""), + /* 174 */ "VInitIn" OpHelp("r[P2]=ValueList(P1,P3)"), + /* 175 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"), + /* 176 */ "VRename" OpHelp(""), + /* 177 */ "Pagecount" OpHelp(""), + /* 178 */ "MaxPgcnt" OpHelp(""), + /* 179 */ "ClrSubtype" OpHelp("r[P1].subtype = 0"), + /* 180 */ "FilterAdd" OpHelp("filter(P1) += key(P3@P4)"), + /* 181 */ "Trace" OpHelp(""), + /* 182 */ "CursorHint" OpHelp(""), + /* 183 */ "ReleaseReg" OpHelp("release r[P1@P2] mask P3"), + /* 184 */ "Noop" OpHelp(""), + /* 185 */ "Explain" OpHelp(""), + /* 186 */ "Abortable" OpHelp(""), }; return azName[i]; } #endif /************** End of opcodes.c *********************************************/ +/************** Begin file os_kv.c *******************************************/ +/* +** 2022-09-06 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains an experimental VFS layer that operates on a +** Key/Value storage engine where both keys and values must be pure +** text. +*/ +/* #include */ +#if SQLITE_OS_KV || (SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL)) + +/***************************************************************************** +** Debugging logic +*/ + +/* SQLITE_KV_TRACE() is used for tracing calls to kvstorage routines. */ +#if 0 +#define SQLITE_KV_TRACE(X) printf X +#else +#define SQLITE_KV_TRACE(X) +#endif + +/* SQLITE_KV_LOG() is used for tracing calls to the VFS interface */ +#if 0 +#define SQLITE_KV_LOG(X) printf X +#else +#define SQLITE_KV_LOG(X) +#endif + + +/* +** Forward declaration of objects used by this VFS implementation +*/ +typedef struct KVVfsFile KVVfsFile; + +/* A single open file. There are only two files represented by this +** VFS - the database and the rollback journal. +*/ +struct KVVfsFile { + sqlite3_file base; /* IO methods */ + const char *zClass; /* Storage class */ + int isJournal; /* True if this is a journal file */ + unsigned int nJrnl; /* Space allocated for aJrnl[] */ + char *aJrnl; /* Journal content */ + int szPage; /* Last known page size */ + sqlite3_int64 szDb; /* Database file size. -1 means unknown */ + char *aData; /* Buffer to hold page data */ +}; +#define SQLITE_KVOS_SZ 133073 + +/* +** Methods for KVVfsFile +*/ +static int kvvfsClose(sqlite3_file*); +static int kvvfsReadDb(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); +static int kvvfsReadJrnl(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); +static int kvvfsWriteDb(sqlite3_file*,const void*,int iAmt, sqlite3_int64); +static int kvvfsWriteJrnl(sqlite3_file*,const void*,int iAmt, sqlite3_int64); +static int kvvfsTruncateDb(sqlite3_file*, sqlite3_int64 size); +static int kvvfsTruncateJrnl(sqlite3_file*, sqlite3_int64 size); +static int kvvfsSyncDb(sqlite3_file*, int flags); +static int kvvfsSyncJrnl(sqlite3_file*, int flags); +static int kvvfsFileSizeDb(sqlite3_file*, sqlite3_int64 *pSize); +static int kvvfsFileSizeJrnl(sqlite3_file*, sqlite3_int64 *pSize); +static int kvvfsLock(sqlite3_file*, int); +static int kvvfsUnlock(sqlite3_file*, int); +static int kvvfsCheckReservedLock(sqlite3_file*, int *pResOut); +static int kvvfsFileControlDb(sqlite3_file*, int op, void *pArg); +static int kvvfsFileControlJrnl(sqlite3_file*, int op, void *pArg); +static int kvvfsSectorSize(sqlite3_file*); +static int kvvfsDeviceCharacteristics(sqlite3_file*); + +/* +** Methods for sqlite3_vfs +*/ +static int kvvfsOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *); +static int kvvfsDelete(sqlite3_vfs*, const char *zName, int syncDir); +static int kvvfsAccess(sqlite3_vfs*, const char *zName, int flags, int *); +static int kvvfsFullPathname(sqlite3_vfs*, const char *zName, int, char *zOut); +static void *kvvfsDlOpen(sqlite3_vfs*, const char *zFilename); +static int kvvfsRandomness(sqlite3_vfs*, int nByte, char *zOut); +static int kvvfsSleep(sqlite3_vfs*, int microseconds); +static int kvvfsCurrentTime(sqlite3_vfs*, double*); +static int kvvfsCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*); + +static sqlite3_vfs sqlite3OsKvvfsObject = { + 1, /* iVersion */ + sizeof(KVVfsFile), /* szOsFile */ + 1024, /* mxPathname */ + 0, /* pNext */ + "kvvfs", /* zName */ + 0, /* pAppData */ + kvvfsOpen, /* xOpen */ + kvvfsDelete, /* xDelete */ + kvvfsAccess, /* xAccess */ + kvvfsFullPathname, /* xFullPathname */ + kvvfsDlOpen, /* xDlOpen */ + 0, /* xDlError */ + 0, /* xDlSym */ + 0, /* xDlClose */ + kvvfsRandomness, /* xRandomness */ + kvvfsSleep, /* xSleep */ + kvvfsCurrentTime, /* xCurrentTime */ + 0, /* xGetLastError */ + kvvfsCurrentTimeInt64 /* xCurrentTimeInt64 */ +}; + +/* Methods for sqlite3_file objects referencing a database file +*/ +static sqlite3_io_methods kvvfs_db_io_methods = { + 1, /* iVersion */ + kvvfsClose, /* xClose */ + kvvfsReadDb, /* xRead */ + kvvfsWriteDb, /* xWrite */ + kvvfsTruncateDb, /* xTruncate */ + kvvfsSyncDb, /* xSync */ + kvvfsFileSizeDb, /* xFileSize */ + kvvfsLock, /* xLock */ + kvvfsUnlock, /* xUnlock */ + kvvfsCheckReservedLock, /* xCheckReservedLock */ + kvvfsFileControlDb, /* xFileControl */ + kvvfsSectorSize, /* xSectorSize */ + kvvfsDeviceCharacteristics, /* xDeviceCharacteristics */ + 0, /* xShmMap */ + 0, /* xShmLock */ + 0, /* xShmBarrier */ + 0, /* xShmUnmap */ + 0, /* xFetch */ + 0 /* xUnfetch */ +}; + +/* Methods for sqlite3_file objects referencing a rollback journal +*/ +static sqlite3_io_methods kvvfs_jrnl_io_methods = { + 1, /* iVersion */ + kvvfsClose, /* xClose */ + kvvfsReadJrnl, /* xRead */ + kvvfsWriteJrnl, /* xWrite */ + kvvfsTruncateJrnl, /* xTruncate */ + kvvfsSyncJrnl, /* xSync */ + kvvfsFileSizeJrnl, /* xFileSize */ + kvvfsLock, /* xLock */ + kvvfsUnlock, /* xUnlock */ + kvvfsCheckReservedLock, /* xCheckReservedLock */ + kvvfsFileControlJrnl, /* xFileControl */ + kvvfsSectorSize, /* xSectorSize */ + kvvfsDeviceCharacteristics, /* xDeviceCharacteristics */ + 0, /* xShmMap */ + 0, /* xShmLock */ + 0, /* xShmBarrier */ + 0, /* xShmUnmap */ + 0, /* xFetch */ + 0 /* xUnfetch */ +}; + +/****** Storage subsystem **************************************************/ +#include +#include +#include + +/* Forward declarations for the low-level storage engine +*/ +static int kvstorageWrite(const char*, const char *zKey, const char *zData); +static int kvstorageDelete(const char*, const char *zKey); +static int kvstorageRead(const char*, const char *zKey, char *zBuf, int nBuf); +#define KVSTORAGE_KEY_SZ 32 + +/* Expand the key name with an appropriate prefix and put the result +** zKeyOut[]. The zKeyOut[] buffer is assumed to hold at least +** KVSTORAGE_KEY_SZ bytes. +*/ +static void kvstorageMakeKey( + const char *zClass, + const char *zKeyIn, + char *zKeyOut +){ + sqlite3_snprintf(KVSTORAGE_KEY_SZ, zKeyOut, "kvvfs-%s-%s", zClass, zKeyIn); +} + +/* Write content into a key. zClass is the particular namespace of the +** underlying key/value store to use - either "local" or "session". +** +** Both zKey and zData are zero-terminated pure text strings. +** +** Return the number of errors. +*/ +static int kvstorageWrite( + const char *zClass, + const char *zKey, + const char *zData +){ + FILE *fd; + char zXKey[KVSTORAGE_KEY_SZ]; + kvstorageMakeKey(zClass, zKey, zXKey); + fd = fopen(zXKey, "wb"); + if( fd ){ + SQLITE_KV_TRACE(("KVVFS-WRITE %-15s (%d) %.50s%s\n", zXKey, + (int)strlen(zData), zData, + strlen(zData)>50 ? "..." : "")); + fputs(zData, fd); + fclose(fd); + return 0; + }else{ + return 1; + } +} + +/* Delete a key (with its corresponding data) from the key/value +** namespace given by zClass. If the key does not previously exist, +** this routine is a no-op. +*/ +static int kvstorageDelete(const char *zClass, const char *zKey){ + char zXKey[KVSTORAGE_KEY_SZ]; + kvstorageMakeKey(zClass, zKey, zXKey); + unlink(zXKey); + SQLITE_KV_TRACE(("KVVFS-DELETE %-15s\n", zXKey)); + return 0; +} + +/* Read the value associated with a zKey from the key/value namespace given +** by zClass and put the text data associated with that key in the first +** nBuf bytes of zBuf[]. The value might be truncated if zBuf is not large +** enough to hold it all. The value put into zBuf must always be zero +** terminated, even if it gets truncated because nBuf is not large enough. +** +** Return the total number of bytes in the data, without truncation, and +** not counting the final zero terminator. Return -1 if the key does +** not exist. +** +** If nBuf<=0 then this routine simply returns the size of the data without +** actually reading it. +*/ +static int kvstorageRead( + const char *zClass, + const char *zKey, + char *zBuf, + int nBuf +){ + FILE *fd; + struct stat buf; + char zXKey[KVSTORAGE_KEY_SZ]; + kvstorageMakeKey(zClass, zKey, zXKey); + if( access(zXKey, R_OK)!=0 + || stat(zXKey, &buf)!=0 + || !S_ISREG(buf.st_mode) + ){ + SQLITE_KV_TRACE(("KVVFS-READ %-15s (-1)\n", zXKey)); + return -1; + } + if( nBuf<=0 ){ + return (int)buf.st_size; + }else if( nBuf==1 ){ + zBuf[0] = 0; + SQLITE_KV_TRACE(("KVVFS-READ %-15s (%d)\n", zXKey, + (int)buf.st_size)); + return (int)buf.st_size; + } + if( nBuf > buf.st_size + 1 ){ + nBuf = buf.st_size + 1; + } + fd = fopen(zXKey, "rb"); + if( fd==0 ){ + SQLITE_KV_TRACE(("KVVFS-READ %-15s (-1)\n", zXKey)); + return -1; + }else{ + sqlite3_int64 n = fread(zBuf, 1, nBuf-1, fd); + fclose(fd); + zBuf[n] = 0; + SQLITE_KV_TRACE(("KVVFS-READ %-15s (%lld) %.50s%s\n", zXKey, + n, zBuf, n>50 ? "..." : "")); + return (int)n; + } +} + +/* +** An internal level of indirection which enables us to replace the +** kvvfs i/o methods with JavaScript implementations in WASM builds. +** Maintenance reminder: if this struct changes in any way, the JSON +** rendering of its structure must be updated in +** sqlite3_wasm_enum_json(). There are no binary compatibility +** concerns, so it does not need an iVersion member. This file is +** necessarily always compiled together with sqlite3_wasm_enum_json(), +** and JS code dynamically creates the mapping of members based on +** that JSON description. +*/ +typedef struct sqlite3_kvvfs_methods sqlite3_kvvfs_methods; +struct sqlite3_kvvfs_methods { + int (*xRead)(const char *zClass, const char *zKey, char *zBuf, int nBuf); + int (*xWrite)(const char *zClass, const char *zKey, const char *zData); + int (*xDelete)(const char *zClass, const char *zKey); + const int nKeySize; +}; + +/* +** This object holds the kvvfs I/O methods which may be swapped out +** for JavaScript-side implementations in WASM builds. In such builds +** it cannot be const, but in native builds it should be so that +** the compiler can hopefully optimize this level of indirection out. +** That said, kvvfs is intended primarily for use in WASM builds. +** +** Note that this is not explicitly flagged as static because the +** amalgamation build will tag it with SQLITE_PRIVATE. +*/ +#ifndef SQLITE_WASM +const +#endif +SQLITE_PRIVATE sqlite3_kvvfs_methods sqlite3KvvfsMethods = { +kvstorageRead, +kvstorageWrite, +kvstorageDelete, +KVSTORAGE_KEY_SZ +}; + +/****** Utility subroutines ************************************************/ + +/* +** Encode binary into the text encoded used to persist on disk. +** The output text is stored in aOut[], which must be at least +** nData+1 bytes in length. +** +** Return the actual length of the encoded text, not counting the +** zero terminator at the end. +** +** Encoding format +** --------------- +** +** * Non-zero bytes are encoded as upper-case hexadecimal +** +** * A sequence of one or more zero-bytes that are not at the +** beginning of the buffer are encoded as a little-endian +** base-26 number using a..z. "a" means 0. "b" means 1, +** "z" means 25. "ab" means 26. "ac" means 52. And so forth. +** +** * Because there is no overlap between the encoding characters +** of hexadecimal and base-26 numbers, it is always clear where +** one stops and the next begins. +*/ +static int kvvfsEncode(const char *aData, int nData, char *aOut){ + int i, j; + const unsigned char *a = (const unsigned char*)aData; + for(i=j=0; i>4]; + aOut[j++] = "0123456789ABCDEF"[c&0xf]; + }else{ + /* A sequence of 1 or more zeros is stored as a little-endian + ** base-26 number using a..z as the digits. So one zero is "b". + ** Two zeros is "c". 25 zeros is "z", 26 zeros is "ab", 27 is "bb", + ** and so forth. + */ + int k; + for(k=1; i+k0 ){ + aOut[j++] = 'a'+(k%26); + k /= 26; + } + } + } + aOut[j] = 0; + return j; +} + +static const signed char kvvfsHexValue[256] = { + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, + -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 +}; + +/* +** Decode the text encoding back to binary. The binary content is +** written into pOut, which must be at least nOut bytes in length. +** +** The return value is the number of bytes actually written into aOut[]. +*/ +static int kvvfsDecode(const char *a, char *aOut, int nOut){ + int i, j; + int c; + const unsigned char *aIn = (const unsigned char*)a; + i = 0; + j = 0; + while( 1 ){ + c = kvvfsHexValue[aIn[i]]; + if( c<0 ){ + int n = 0; + int mult = 1; + c = aIn[i]; + if( c==0 ) break; + while( c>='a' && c<='z' ){ + n += (c - 'a')*mult; + mult *= 26; + c = aIn[++i]; + } + if( j+n>nOut ) return -1; + memset(&aOut[j], 0, n); + j += n; + if( c==0 || mult==1 ) break; /* progress stalled if mult==1 */ + }else{ + aOut[j] = c<<4; + c = kvvfsHexValue[aIn[++i]]; + if( c<0 ) break; + aOut[j++] += c; + i++; + } + } + return j; +} + +/* +** Decode a complete journal file. Allocate space in pFile->aJrnl +** and store the decoding there. Or leave pFile->aJrnl set to NULL +** if an error is encountered. +** +** The first few characters of the text encoding will be a little-endian +** base-26 number (digits a..z) that is the total number of bytes +** in the decoded journal file image. This base-26 number is followed +** by a single space, then the encoding of the journal. The space +** separator is required to act as a terminator for the base-26 number. +*/ +static void kvvfsDecodeJournal( + KVVfsFile *pFile, /* Store decoding in pFile->aJrnl */ + const char *zTxt, /* Text encoding. Zero-terminated */ + int nTxt /* Bytes in zTxt, excluding zero terminator */ +){ + unsigned int n = 0; + int c, i, mult; + i = 0; + mult = 1; + while( (c = zTxt[i++])>='a' && c<='z' ){ + n += (zTxt[i] - 'a')*mult; + mult *= 26; + } + sqlite3_free(pFile->aJrnl); + pFile->aJrnl = sqlite3_malloc64( n ); + if( pFile->aJrnl==0 ){ + pFile->nJrnl = 0; + return; + } + pFile->nJrnl = n; + n = kvvfsDecode(zTxt+i, pFile->aJrnl, pFile->nJrnl); + if( nnJrnl ){ + sqlite3_free(pFile->aJrnl); + pFile->aJrnl = 0; + pFile->nJrnl = 0; + } +} + +/* +** Read or write the "sz" element, containing the database file size. +*/ +static sqlite3_int64 kvvfsReadFileSize(KVVfsFile *pFile){ + char zData[50]; + zData[0] = 0; + sqlite3KvvfsMethods.xRead(pFile->zClass, "sz", zData, sizeof(zData)-1); + return strtoll(zData, 0, 0); +} +static int kvvfsWriteFileSize(KVVfsFile *pFile, sqlite3_int64 sz){ + char zData[50]; + sqlite3_snprintf(sizeof(zData), zData, "%lld", sz); + return sqlite3KvvfsMethods.xWrite(pFile->zClass, "sz", zData); +} + +/****** sqlite3_io_methods methods ******************************************/ + +/* +** Close an kvvfs-file. +*/ +static int kvvfsClose(sqlite3_file *pProtoFile){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + + SQLITE_KV_LOG(("xClose %s %s\n", pFile->zClass, + pFile->isJournal ? "journal" : "db")); + sqlite3_free(pFile->aJrnl); + sqlite3_free(pFile->aData); + return SQLITE_OK; +} + +/* +** Read from the -journal file. +*/ +static int kvvfsReadJrnl( + sqlite3_file *pProtoFile, + void *zBuf, + int iAmt, + sqlite_int64 iOfst +){ + KVVfsFile *pFile = (KVVfsFile*)pProtoFile; + assert( pFile->isJournal ); + SQLITE_KV_LOG(("xRead('%s-journal',%d,%lld)\n", pFile->zClass, iAmt, iOfst)); + if( pFile->aJrnl==0 ){ + int szTxt = kvstorageRead(pFile->zClass, "jrnl", 0, 0); + char *aTxt; + if( szTxt<=4 ){ + return SQLITE_IOERR; + } + aTxt = sqlite3_malloc64( szTxt+1 ); + if( aTxt==0 ) return SQLITE_NOMEM; + kvstorageRead(pFile->zClass, "jrnl", aTxt, szTxt+1); + kvvfsDecodeJournal(pFile, aTxt, szTxt); + sqlite3_free(aTxt); + if( pFile->aJrnl==0 ) return SQLITE_IOERR; + } + if( iOfst+iAmt>pFile->nJrnl ){ + return SQLITE_IOERR_SHORT_READ; + } + memcpy(zBuf, pFile->aJrnl+iOfst, iAmt); + return SQLITE_OK; +} + +/* +** Read from the database file. +*/ +static int kvvfsReadDb( + sqlite3_file *pProtoFile, + void *zBuf, + int iAmt, + sqlite_int64 iOfst +){ + KVVfsFile *pFile = (KVVfsFile*)pProtoFile; + unsigned int pgno; + int got, n; + char zKey[30]; + char *aData = pFile->aData; + assert( iOfst>=0 ); + assert( iAmt>=0 ); + SQLITE_KV_LOG(("xRead('%s-db',%d,%lld)\n", pFile->zClass, iAmt, iOfst)); + if( iOfst+iAmt>=512 ){ + if( (iOfst % iAmt)!=0 ){ + return SQLITE_IOERR_READ; + } + if( (iAmt & (iAmt-1))!=0 || iAmt<512 || iAmt>65536 ){ + return SQLITE_IOERR_READ; + } + pFile->szPage = iAmt; + pgno = 1 + iOfst/iAmt; + }else{ + pgno = 1; + } + sqlite3_snprintf(sizeof(zKey), zKey, "%u", pgno); + got = sqlite3KvvfsMethods.xRead(pFile->zClass, zKey, + aData, SQLITE_KVOS_SZ-1); + if( got<0 ){ + n = 0; + }else{ + aData[got] = 0; + if( iOfst+iAmt<512 ){ + int k = iOfst+iAmt; + aData[k*2] = 0; + n = kvvfsDecode(aData, &aData[2000], SQLITE_KVOS_SZ-2000); + if( n>=iOfst+iAmt ){ + memcpy(zBuf, &aData[2000+iOfst], iAmt); + n = iAmt; + }else{ + n = 0; + } + }else{ + n = kvvfsDecode(aData, zBuf, iAmt); + } + } + if( nzClass, iAmt, iOfst)); + if( iEnd>=0x10000000 ) return SQLITE_FULL; + if( pFile->aJrnl==0 || pFile->nJrnlaJrnl, iEnd); + if( aNew==0 ){ + return SQLITE_IOERR_NOMEM; + } + pFile->aJrnl = aNew; + if( pFile->nJrnlaJrnl+pFile->nJrnl, 0, iOfst-pFile->nJrnl); + } + pFile->nJrnl = iEnd; + } + memcpy(pFile->aJrnl+iOfst, zBuf, iAmt); + return SQLITE_OK; +} + +/* +** Write into the database file. +*/ +static int kvvfsWriteDb( + sqlite3_file *pProtoFile, + const void *zBuf, + int iAmt, + sqlite_int64 iOfst +){ + KVVfsFile *pFile = (KVVfsFile*)pProtoFile; + unsigned int pgno; + char zKey[30]; + char *aData = pFile->aData; + SQLITE_KV_LOG(("xWrite('%s-db',%d,%lld)\n", pFile->zClass, iAmt, iOfst)); + assert( iAmt>=512 && iAmt<=65536 ); + assert( (iAmt & (iAmt-1))==0 ); + assert( pFile->szPage<0 || pFile->szPage==iAmt ); + pFile->szPage = iAmt; + pgno = 1 + iOfst/iAmt; + sqlite3_snprintf(sizeof(zKey), zKey, "%u", pgno); + kvvfsEncode(zBuf, iAmt, aData); + if( sqlite3KvvfsMethods.xWrite(pFile->zClass, zKey, aData) ){ + return SQLITE_IOERR; + } + if( iOfst+iAmt > pFile->szDb ){ + pFile->szDb = iOfst + iAmt; + } + return SQLITE_OK; +} + +/* +** Truncate an kvvfs-file. +*/ +static int kvvfsTruncateJrnl(sqlite3_file *pProtoFile, sqlite_int64 size){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + SQLITE_KV_LOG(("xTruncate('%s-journal',%lld)\n", pFile->zClass, size)); + assert( size==0 ); + sqlite3KvvfsMethods.xDelete(pFile->zClass, "jrnl"); + sqlite3_free(pFile->aJrnl); + pFile->aJrnl = 0; + pFile->nJrnl = 0; + return SQLITE_OK; +} +static int kvvfsTruncateDb(sqlite3_file *pProtoFile, sqlite_int64 size){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + if( pFile->szDb>size + && pFile->szPage>0 + && (size % pFile->szPage)==0 + ){ + char zKey[50]; + unsigned int pgno, pgnoMax; + SQLITE_KV_LOG(("xTruncate('%s-db',%lld)\n", pFile->zClass, size)); + pgno = 1 + size/pFile->szPage; + pgnoMax = 2 + pFile->szDb/pFile->szPage; + while( pgno<=pgnoMax ){ + sqlite3_snprintf(sizeof(zKey), zKey, "%u", pgno); + sqlite3KvvfsMethods.xDelete(pFile->zClass, zKey); + pgno++; + } + pFile->szDb = size; + return kvvfsWriteFileSize(pFile, size) ? SQLITE_IOERR : SQLITE_OK; + } + return SQLITE_IOERR; +} + +/* +** Sync an kvvfs-file. +*/ +static int kvvfsSyncJrnl(sqlite3_file *pProtoFile, int flags){ + int i, n; + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + char *zOut; + SQLITE_KV_LOG(("xSync('%s-journal')\n", pFile->zClass)); + if( pFile->nJrnl<=0 ){ + return kvvfsTruncateJrnl(pProtoFile, 0); + } + zOut = sqlite3_malloc64( pFile->nJrnl*2 + 50 ); + if( zOut==0 ){ + return SQLITE_IOERR_NOMEM; + } + n = pFile->nJrnl; + i = 0; + do{ + zOut[i++] = 'a' + (n%26); + n /= 26; + }while( n>0 ); + zOut[i++] = ' '; + kvvfsEncode(pFile->aJrnl, pFile->nJrnl, &zOut[i]); + i = sqlite3KvvfsMethods.xWrite(pFile->zClass, "jrnl", zOut); + sqlite3_free(zOut); + return i ? SQLITE_IOERR : SQLITE_OK; +} +static int kvvfsSyncDb(sqlite3_file *pProtoFile, int flags){ + return SQLITE_OK; +} + +/* +** Return the current file-size of an kvvfs-file. +*/ +static int kvvfsFileSizeJrnl(sqlite3_file *pProtoFile, sqlite_int64 *pSize){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + SQLITE_KV_LOG(("xFileSize('%s-journal')\n", pFile->zClass)); + *pSize = pFile->nJrnl; + return SQLITE_OK; +} +static int kvvfsFileSizeDb(sqlite3_file *pProtoFile, sqlite_int64 *pSize){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + SQLITE_KV_LOG(("xFileSize('%s-db')\n", pFile->zClass)); + if( pFile->szDb>=0 ){ + *pSize = pFile->szDb; + }else{ + *pSize = kvvfsReadFileSize(pFile); + } + return SQLITE_OK; +} + +/* +** Lock an kvvfs-file. +*/ +static int kvvfsLock(sqlite3_file *pProtoFile, int eLock){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + assert( !pFile->isJournal ); + SQLITE_KV_LOG(("xLock(%s,%d)\n", pFile->zClass, eLock)); + + if( eLock!=SQLITE_LOCK_NONE ){ + pFile->szDb = kvvfsReadFileSize(pFile); + } + return SQLITE_OK; +} + +/* +** Unlock an kvvfs-file. +*/ +static int kvvfsUnlock(sqlite3_file *pProtoFile, int eLock){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + assert( !pFile->isJournal ); + SQLITE_KV_LOG(("xUnlock(%s,%d)\n", pFile->zClass, eLock)); + if( eLock==SQLITE_LOCK_NONE ){ + pFile->szDb = -1; + } + return SQLITE_OK; +} + +/* +** Check if another file-handle holds a RESERVED lock on an kvvfs-file. +*/ +static int kvvfsCheckReservedLock(sqlite3_file *pProtoFile, int *pResOut){ + SQLITE_KV_LOG(("xCheckReservedLock\n")); + *pResOut = 0; + return SQLITE_OK; +} + +/* +** File control method. For custom operations on an kvvfs-file. +*/ +static int kvvfsFileControlJrnl(sqlite3_file *pProtoFile, int op, void *pArg){ + SQLITE_KV_LOG(("xFileControl(%d) on journal\n", op)); + return SQLITE_NOTFOUND; +} +static int kvvfsFileControlDb(sqlite3_file *pProtoFile, int op, void *pArg){ + SQLITE_KV_LOG(("xFileControl(%d) on database\n", op)); + if( op==SQLITE_FCNTL_SYNC ){ + KVVfsFile *pFile = (KVVfsFile *)pProtoFile; + int rc = SQLITE_OK; + SQLITE_KV_LOG(("xSync('%s-db')\n", pFile->zClass)); + if( pFile->szDb>0 && 0!=kvvfsWriteFileSize(pFile, pFile->szDb) ){ + rc = SQLITE_IOERR; + } + return rc; + } + return SQLITE_NOTFOUND; +} + +/* +** Return the sector-size in bytes for an kvvfs-file. +*/ +static int kvvfsSectorSize(sqlite3_file *pFile){ + return 512; +} + +/* +** Return the device characteristic flags supported by an kvvfs-file. +*/ +static int kvvfsDeviceCharacteristics(sqlite3_file *pProtoFile){ + return 0; +} + +/****** sqlite3_vfs methods *************************************************/ + +/* +** Open an kvvfs file handle. +*/ +static int kvvfsOpen( + sqlite3_vfs *pProtoVfs, + const char *zName, + sqlite3_file *pProtoFile, + int flags, + int *pOutFlags +){ + KVVfsFile *pFile = (KVVfsFile*)pProtoFile; + if( zName==0 ) zName = ""; + SQLITE_KV_LOG(("xOpen(\"%s\")\n", zName)); + if( strcmp(zName, "local")==0 + || strcmp(zName, "session")==0 + ){ + pFile->isJournal = 0; + pFile->base.pMethods = &kvvfs_db_io_methods; + }else + if( strcmp(zName, "local-journal")==0 + || strcmp(zName, "session-journal")==0 + ){ + pFile->isJournal = 1; + pFile->base.pMethods = &kvvfs_jrnl_io_methods; + }else{ + return SQLITE_CANTOPEN; + } + if( zName[0]=='s' ){ + pFile->zClass = "session"; + }else{ + pFile->zClass = "local"; + } + pFile->aData = sqlite3_malloc64(SQLITE_KVOS_SZ); + if( pFile->aData==0 ){ + return SQLITE_NOMEM; + } + pFile->aJrnl = 0; + pFile->nJrnl = 0; + pFile->szPage = -1; + pFile->szDb = -1; + return SQLITE_OK; +} + +/* +** Delete the file located at zPath. If the dirSync argument is true, +** ensure the file-system modifications are synced to disk before +** returning. +*/ +static int kvvfsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ + if( strcmp(zPath, "local-journal")==0 ){ + sqlite3KvvfsMethods.xDelete("local", "jrnl"); + }else + if( strcmp(zPath, "session-journal")==0 ){ + sqlite3KvvfsMethods.xDelete("session", "jrnl"); + } + return SQLITE_OK; +} + +/* +** Test for access permissions. Return true if the requested permission +** is available, or false otherwise. +*/ +static int kvvfsAccess( + sqlite3_vfs *pProtoVfs, + const char *zPath, + int flags, + int *pResOut +){ + SQLITE_KV_LOG(("xAccess(\"%s\")\n", zPath)); + if( strcmp(zPath, "local-journal")==0 ){ + *pResOut = sqlite3KvvfsMethods.xRead("local", "jrnl", 0, 0)>0; + }else + if( strcmp(zPath, "session-journal")==0 ){ + *pResOut = sqlite3KvvfsMethods.xRead("session", "jrnl", 0, 0)>0; + }else + if( strcmp(zPath, "local")==0 ){ + *pResOut = sqlite3KvvfsMethods.xRead("local", "sz", 0, 0)>0; + }else + if( strcmp(zPath, "session")==0 ){ + *pResOut = sqlite3KvvfsMethods.xRead("session", "sz", 0, 0)>0; + }else + { + *pResOut = 0; + } + SQLITE_KV_LOG(("xAccess returns %d\n",*pResOut)); + return SQLITE_OK; +} + +/* +** Populate buffer zOut with the full canonical pathname corresponding +** to the pathname in zPath. zOut is guaranteed to point to a buffer +** of at least (INST_MAX_PATHNAME+1) bytes. +*/ +static int kvvfsFullPathname( + sqlite3_vfs *pVfs, + const char *zPath, + int nOut, + char *zOut +){ + size_t nPath; +#ifdef SQLITE_OS_KV_ALWAYS_LOCAL + zPath = "local"; +#endif + nPath = strlen(zPath); + SQLITE_KV_LOG(("xFullPathname(\"%s\")\n", zPath)); + if( nOut +static int kvvfsCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *pTimeOut){ + static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; + struct timeval sNow; + (void)gettimeofday(&sNow, 0); /* Cannot fail given valid arguments */ + *pTimeOut = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000; + return SQLITE_OK; +} +#endif /* SQLITE_OS_KV || SQLITE_OS_UNIX */ + +#if SQLITE_OS_KV +/* +** This routine is called initialize the KV-vfs as the default VFS. +*/ +SQLITE_API int sqlite3_os_init(void){ + return sqlite3_vfs_register(&sqlite3OsKvvfsObject, 1); +} +SQLITE_API int sqlite3_os_end(void){ + return SQLITE_OK; +} +#endif /* SQLITE_OS_KV */ + +#if SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL) +SQLITE_PRIVATE int sqlite3KvvfsInit(void){ + return sqlite3_vfs_register(&sqlite3OsKvvfsObject, 0); +} +#endif + +/************** End of os_kv.c ***********************************************/ /************** Begin file os_unix.c *****************************************/ /* ** 2004 May 22 @@ -31484,7 +37659,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ ** This source file is organized into divisions where the logic for various ** subfunctions is contained within the appropriate division. PLEASE ** KEEP THE STRUCTURE OF THIS FILE INTACT. New code should be placed -** in the correct division and should be clearly labeled. +** in the correct division and should be clearly labelled. ** ** The layout of divisions is as follows: ** @@ -31523,7 +37698,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ ** Styles 4, 5, and 7 are only available of SQLITE_ENABLE_LOCKING_STYLE ** is defined to 1. The SQLITE_ENABLE_LOCKING_STYLE also enables automatic ** selection of the appropriate locking style based on the filesystem -** where the database is located. +** where the database is located. */ #if !defined(SQLITE_ENABLE_LOCKING_STYLE) # if defined(__APPLE__) @@ -31534,7 +37709,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ #endif /* Use pread() and pwrite() if they are available */ -#if defined(__APPLE__) +#if defined(__APPLE__) || defined(__linux__) # define HAVE_PREAD 1 # define HAVE_PWRITE 1 #endif @@ -31549,15 +37724,16 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ /* ** standard include files. */ -#include -#include +#include /* amalgamator: keep */ +#include /* amalgamator: keep */ #include #include -#include +#include /* amalgamator: keep */ /* #include */ -#include +#include /* amalgamator: keep */ #include -#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 +#if (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) \ + && !defined(SQLITE_WASI) # include #endif @@ -31567,13 +37743,30 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ # include #endif /* SQLITE_ENABLE_LOCKING_STYLE */ -#if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \ - (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000)) -# if (!defined(TARGET_OS_EMBEDDED) || (TARGET_OS_EMBEDDED==0)) \ - && (!defined(TARGET_IPHONE_SIMULATOR) || (TARGET_IPHONE_SIMULATOR==0)) -# define HAVE_GETHOSTUUID 1 -# else -# warning "gethostuuid() is disabled." +/* +** Try to determine if gethostuuid() is available based on standard +** macros. This might sometimes compute the wrong value for some +** obscure platforms. For those cases, simply compile with one of +** the following: +** +** -DHAVE_GETHOSTUUID=0 +** -DHAVE_GETHOSTUUID=1 +** +** None if this matters except when building on Apple products with +** -DSQLITE_ENABLE_LOCKING_STYLE. +*/ +#ifndef HAVE_GETHOSTUUID +# define HAVE_GETHOSTUUID 0 +# if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \ + (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000)) +# if (!defined(TARGET_OS_EMBEDDED) || (TARGET_OS_EMBEDDED==0)) \ + && (!defined(TARGET_IPHONE_SIMULATOR) || (TARGET_IPHONE_SIMULATOR==0))\ + && (!defined(TARGET_OS_MACCATALYST) || (TARGET_OS_MACCATALYST==0)) +# undef HAVE_GETHOSTUUID +# define HAVE_GETHOSTUUID 1 +# else +# warning "gethostuuid() is disabled." +# endif # endif #endif @@ -31598,12 +37791,10 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ #define SQLITE_FSFLAGS_IS_MSDOS 0x1 /* -** If we are to be thread-safe, include the pthreads header and define -** the SQLITE_UNIX_THREADS macro. +** If we are to be thread-safe, include the pthreads header. */ #if SQLITE_THREADSAFE /* # include */ -# define SQLITE_UNIX_THREADS 1 #endif /* @@ -31630,12 +37821,49 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ */ #define SQLITE_MAX_SYMLINKS 100 +/* +** Remove and stub certain info for WASI (WebAssembly System +** Interface) builds. +*/ +#ifdef SQLITE_WASI +# undef HAVE_FCHMOD +# undef HAVE_FCHOWN +# undef HAVE_MREMAP +# define HAVE_MREMAP 0 +# ifndef SQLITE_DEFAULT_UNIX_VFS +# define SQLITE_DEFAULT_UNIX_VFS "unix-dotfile" + /* ^^^ should SQLITE_DEFAULT_UNIX_VFS be "unix-none"? */ +# endif +# ifndef F_RDLCK +# define F_RDLCK 0 +# define F_WRLCK 1 +# define F_UNLCK 2 +# if __LONG_MAX == 0x7fffffffL +# define F_GETLK 12 +# define F_SETLK 13 +# define F_SETLKW 14 +# else +# define F_GETLK 5 +# define F_SETLK 6 +# define F_SETLKW 7 +# endif +# endif +#else /* !SQLITE_WASI */ +# ifndef HAVE_FCHMOD +# define HAVE_FCHMOD +# endif +#endif /* SQLITE_WASI */ + +#ifdef SQLITE_WASI +# define osGetpid(X) (pid_t)1 +#else /* Always cast the getpid() return type for compatibility with ** kernel modules in VxWorks. */ -#define osGetpid(X) (pid_t)getpid() +# define osGetpid(X) (pid_t)getpid() +#endif /* -** Only set the lastErrno if the error code is a real error and not +** Only set the lastErrno if the error code is a real error and not ** a normal expected return code of SQLITE_BUSY or SQLITE_OK */ #define IS_LOCK_ERROR(x) ((x != SQLITE_OK) && (x != SQLITE_BUSY)) @@ -31703,7 +37931,7 @@ struct unixFile { ** whenever any part of the database changes. An assertion fault will ** occur if a file is updated without also updating the transaction ** counter. This test is made to avoid new problems similar to the - ** one described by ticket #3584. + ** one described by ticket #3584. */ unsigned char transCntrChng; /* True if the transaction counter changed */ unsigned char dbUpdate; /* True if any part of database file changed */ @@ -31712,7 +37940,7 @@ struct unixFile { #endif #ifdef SQLITE_TEST - /* In test mode, increase the size of this structure a bit so that + /* In test mode, increase the size of this structure a bit so that ** it is larger than the struct CrashFile defined in test6.c. */ char aPadding[32]; @@ -31744,205 +37972,7 @@ static pid_t randomnessPid = 0; /* ** Include code that is common to all os_*.c files */ -/************** Include os_common.h in the middle of os_unix.c ***************/ -/************** Begin file os_common.h ***************************************/ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains macros and a little bit of code that is common to -** all of the platform-specific files (os_*.c) and is #included into those -** files. -** -** This file should be #included by the os_*.c files only. It is not a -** general purpose header file. -*/ -#ifndef _OS_COMMON_H_ -#define _OS_COMMON_H_ - -/* -** At least two bugs have slipped in because we changed the MEMORY_DEBUG -** macro to SQLITE_DEBUG and some older makefiles have not yet made the -** switch. The following code should catch this problem at compile-time. -*/ -#ifdef MEMORY_DEBUG -# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." -#endif - -/* -** Macros for performance tracing. Normally turned off. Only works -** on i486 hardware. -*/ -#ifdef SQLITE_PERFORMANCE_TRACE - -/* -** hwtime.h contains inline assembler code for implementing -** high-performance timing routines. -*/ -/************** Include hwtime.h in the middle of os_common.h ****************/ -/************** Begin file hwtime.h ******************************************/ -/* -** 2008 May 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains inline asm code for retrieving "high-performance" -** counters for x86 class CPUs. -*/ -#ifndef SQLITE_HWTIME_H -#define SQLITE_HWTIME_H - -/* -** The following routine only works on pentium-class (or newer) processors. -** It uses the RDTSC opcode to read the cycle count value out of the -** processor and returns that value. This can be used for high-res -** profiling. -*/ -#if (defined(__GNUC__) || defined(_MSC_VER)) && \ - (defined(i386) || defined(__i386__) || defined(_M_IX86)) - - #if defined(__GNUC__) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned int lo, hi; - __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); - return (sqlite_uint64)hi << 32 | lo; - } - - #elif defined(_MSC_VER) - - __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ - __asm { - rdtsc - ret ; return value at EDX:EAX - } - } - - #endif - -#elif (defined(__GNUC__) && defined(__x86_64__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long val; - __asm__ __volatile__ ("rdtsc" : "=A" (val)); - return val; - } - -#elif (defined(__GNUC__) && defined(__ppc__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long long retval; - unsigned long junk; - __asm__ __volatile__ ("\n\ - 1: mftbu %1\n\ - mftb %L0\n\ - mftbu %0\n\ - cmpw %0,%1\n\ - bne 1b" - : "=r" (retval), "=r" (junk)); - return retval; - } - -#else - - #error Need implementation of sqlite3Hwtime() for your platform. - - /* - ** To compile without implementing sqlite3Hwtime() for your platform, - ** you can remove the above #error and use the following - ** stub function. You will lose timing support for many - ** of the debugging and testing utilities, but it should at - ** least compile and run. - */ -SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } - -#endif - -#endif /* !defined(SQLITE_HWTIME_H) */ - -/************** End of hwtime.h **********************************************/ -/************** Continuing where we left off in os_common.h ******************/ - -static sqlite_uint64 g_start; -static sqlite_uint64 g_elapsed; -#define TIMER_START g_start=sqlite3Hwtime() -#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start -#define TIMER_ELAPSED g_elapsed -#else -#define TIMER_START -#define TIMER_END -#define TIMER_ELAPSED ((sqlite_uint64)0) -#endif - -/* -** If we compile with the SQLITE_TEST macro set, then the following block -** of code will give us the ability to simulate a disk I/O error. This -** is used for testing the I/O recovery logic. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_io_error_hit; -SQLITE_API extern int sqlite3_io_error_hardhit; -SQLITE_API extern int sqlite3_io_error_pending; -SQLITE_API extern int sqlite3_io_error_persist; -SQLITE_API extern int sqlite3_io_error_benign; -SQLITE_API extern int sqlite3_diskfull_pending; -SQLITE_API extern int sqlite3_diskfull; -#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) -#define SimulateIOError(CODE) \ - if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ - || sqlite3_io_error_pending-- == 1 ) \ - { local_ioerr(); CODE; } -static void local_ioerr(){ - IOTRACE(("IOERR\n")); - sqlite3_io_error_hit++; - if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; -} -#define SimulateDiskfullError(CODE) \ - if( sqlite3_diskfull_pending ){ \ - if( sqlite3_diskfull_pending == 1 ){ \ - local_ioerr(); \ - sqlite3_diskfull = 1; \ - sqlite3_io_error_hit = 1; \ - CODE; \ - }else{ \ - sqlite3_diskfull_pending--; \ - } \ - } -#else -#define SimulateIOErrorBenign(X) -#define SimulateIOError(A) -#define SimulateDiskfullError(A) -#endif /* defined(SQLITE_TEST) */ - -/* -** When testing, keep a count of the number of open files. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_open_file_count; -#define OpenCounter(X) sqlite3_open_file_count+=(X) -#else -#define OpenCounter(X) -#endif /* defined(SQLITE_TEST) */ - -#endif /* !defined(_OS_COMMON_H_) */ - -/************** End of os_common.h *******************************************/ -/************** Continuing where we left off in os_unix.c ********************/ +/* #include "os_common.h" */ /* ** Define various macros that are missing from some systems. @@ -32055,7 +38085,7 @@ static struct unix_syscall { #ifdef __DJGPP__ { "fstat", 0, 0 }, #define osFstat(a,b,c) 0 -#else +#else { "fstat", (sqlite3_syscall_ptr)fstat, 0 }, #define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent) #endif @@ -32102,7 +38132,11 @@ static struct unix_syscall { #define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off64_t))\ aSyscall[13].pCurrent) +#if defined(HAVE_FCHMOD) { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 }, +#else + { "fchmod", (sqlite3_syscall_ptr)0, 0 }, +#endif #define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent) #if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE @@ -32138,14 +38172,16 @@ static struct unix_syscall { #endif #define osGeteuid ((uid_t(*)(void))aSyscall[21].pCurrent) -#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 +#if (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) \ + && !defined(SQLITE_WASI) { "mmap", (sqlite3_syscall_ptr)mmap, 0 }, #else { "mmap", (sqlite3_syscall_ptr)0, 0 }, #endif #define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent) -#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 +#if (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) \ + && !defined(SQLITE_WASI) { "munmap", (sqlite3_syscall_ptr)munmap, 0 }, #else { "munmap", (sqlite3_syscall_ptr)0, 0 }, @@ -32181,11 +38217,16 @@ static struct unix_syscall { #define osLstat ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent) #if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) +# ifdef __ANDROID__ + { "ioctl", (sqlite3_syscall_ptr)(int(*)(int, int, ...))ioctl, 0 }, +#define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent) +# else { "ioctl", (sqlite3_syscall_ptr)ioctl, 0 }, +#define osIoctl ((int(*)(int,unsigned long,...))aSyscall[28].pCurrent) +# endif #else { "ioctl", (sqlite3_syscall_ptr)0, 0 }, #endif -#define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent) }; /* End of the overrideable system calls */ @@ -32205,7 +38246,7 @@ static int robustFchown(int fd, uid_t uid, gid_t gid){ /* ** This is the xSetSystemCall() method of sqlite3_vfs for all of the -** "unix" VFSes. Return SQLITE_OK opon successfully updating the +** "unix" VFSes. Return SQLITE_OK upon successfully updating the ** system call pointer, or SQLITE_NOTFOUND if there is no configurable ** system call named zName. */ @@ -32288,7 +38329,7 @@ static const char *unixNextSystemCall(sqlite3_vfs *p, const char *zName){ /* ** Do not accept any file descriptor less than this value, in order to avoid -** opening database file using file descriptors that are commonly used for +** opening database file using file descriptors that are commonly used for ** standard input, output, and error. */ #ifndef SQLITE_MINIMUM_FILE_DESCRIPTOR @@ -32326,18 +38367,21 @@ static int robust_open(const char *z, int f, mode_t m){ break; } if( fd>=SQLITE_MINIMUM_FILE_DESCRIPTOR ) break; + if( (f & (O_EXCL|O_CREAT))==(O_EXCL|O_CREAT) ){ + (void)osUnlink(z); + } osClose(fd); - sqlite3_log(SQLITE_WARNING, + sqlite3_log(SQLITE_WARNING, "attempt to open \"%s\" as file descriptor %d", z, fd); fd = -1; - if( osOpen("/dev/null", f, m)<0 ) break; + if( osOpen("/dev/null", O_RDONLY, m)<0 ) break; } if( fd>=0 ){ if( m!=0 ){ struct stat statbuf; - if( osFstat(fd, &statbuf)==0 + if( osFstat(fd, &statbuf)==0 && statbuf.st_size==0 - && (statbuf.st_mode&0777)!=m + && (statbuf.st_mode&0777)!=m ){ osFchmod(fd, m); } @@ -32352,22 +38396,35 @@ static int robust_open(const char *z, int f, mode_t m){ /* ** Helper functions to obtain and relinquish the global mutex. The ** global mutex is used to protect the unixInodeInfo and -** vxworksFileId objects used by this file, all of which may be +** vxworksFileId objects used by this file, all of which may be ** shared by multiple threads. ** -** Function unixMutexHeld() is used to assert() that the global mutex -** is held when required. This function is only used as part of assert() +** Function unixMutexHeld() is used to assert() that the global mutex +** is held when required. This function is only used as part of assert() ** statements. e.g. ** ** unixEnterMutex() ** assert( unixMutexHeld() ); ** unixEnterLeave() +** +** To prevent deadlock, the global unixBigLock must must be acquired +** before the unixInodeInfo.pLockMutex mutex, if both are held. It is +** OK to get the pLockMutex without holding unixBigLock first, but if +** that happens, the unixBigLock mutex must not be acquired until after +** pLockMutex is released. +** +** OK: enter(unixBigLock), enter(pLockInfo) +** OK: enter(unixBigLock) +** OK: enter(pLockInfo) +** ERROR: enter(pLockInfo), enter(unixBigLock) */ static sqlite3_mutex *unixBigLock = 0; static void unixEnterMutex(void){ + assert( sqlite3_mutex_notheld(unixBigLock) ); /* Not a recursive mutex */ sqlite3_mutex_enter(unixBigLock); } static void unixLeaveMutex(void){ + assert( sqlite3_mutex_held(unixBigLock) ); sqlite3_mutex_leave(unixBigLock); } #ifdef SQLITE_DEBUG @@ -32465,7 +38522,7 @@ static int lockTrace(int fd, int op, struct flock *p){ static int robust_ftruncate(int h, sqlite3_int64 sz){ int rc; #ifdef __ANDROID__ - /* On Android, ftruncate() always uses 32-bit offsets, even if + /* On Android, ftruncate() always uses 32-bit offsets, even if ** _FILE_OFFSET_BITS=64 is defined. This means it is unsafe to attempt to ** truncate a file to any size larger than 2GiB. Silently ignore any ** such attempts. */ @@ -32481,32 +38538,32 @@ static int robust_ftruncate(int h, sqlite3_int64 sz){ ** This routine translates a standard POSIX errno code into something ** useful to the clients of the sqlite3 functions. Specifically, it is ** intended to translate a variety of "try again" errors into SQLITE_BUSY -** and a variety of "please close the file descriptor NOW" errors into +** and a variety of "please close the file descriptor NOW" errors into ** SQLITE_IOERR -** +** ** Errors during initialization of locks, or file system support for locks, ** should handle ENOLCK, ENOTSUP, EOPNOTSUPP separately. */ static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { - assert( (sqliteIOErr == SQLITE_IOERR_LOCK) || - (sqliteIOErr == SQLITE_IOERR_UNLOCK) || + assert( (sqliteIOErr == SQLITE_IOERR_LOCK) || + (sqliteIOErr == SQLITE_IOERR_UNLOCK) || (sqliteIOErr == SQLITE_IOERR_RDLOCK) || (sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) ); switch (posixError) { - case EACCES: + case EACCES: case EAGAIN: case ETIMEDOUT: case EBUSY: case EINTR: - case ENOLCK: - /* random NFS retry error, unless during file system support + case ENOLCK: + /* random NFS retry error, unless during file system support * introspection, in which it actually means what it says */ return SQLITE_BUSY; - - case EPERM: + + case EPERM: return SQLITE_PERM; - - default: + + default: return sqliteIOErr; } } @@ -32521,7 +38578,7 @@ static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { ** ** A pointer to an instance of the following structure can be used as a ** unique file ID in VxWorks. Each instance of this structure contains -** a copy of the canonical filename. There is also a reference count. +** a copy of the canonical filename. There is also a reference count. ** The structure is reclaimed when the number of pointers to it drops to ** zero. ** @@ -32537,7 +38594,7 @@ struct vxworksFileId { }; #if OS_VXWORKS -/* +/* ** All unique filenames are held on a linked list headed by this ** variable: */ @@ -32609,7 +38666,7 @@ static struct vxworksFileId *vxworksFindFileId(const char *zAbsoluteName){ */ unixEnterMutex(); for(pCandidate=vxworksFileList; pCandidate; pCandidate=pCandidate->pNext){ - if( pCandidate->nName==n + if( pCandidate->nName==n && memcmp(pCandidate->zCanonicalName, pNew->zCanonicalName, n)==0 ){ sqlite3_free(pNew); @@ -32702,7 +38759,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){ ** cnt>0 means there are cnt shared locks on the file. ** ** Any attempt to lock or unlock a file first checks the locking -** structure. The fcntl() system call is only invoked to set a +** structure. The fcntl() system call is only invoked to set a ** POSIX lock if the internal lock structure transitions between ** a locked and an unlocked state. ** @@ -32711,7 +38768,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){ ** If you close a file descriptor that points to a file that has locks, ** all locks on that file that are owned by the current process are ** released. To work around this problem, each unixInodeInfo object -** maintains a count of the number of pending locks on tha inode. +** maintains a count of the number of pending locks on the inode. ** When an attempt is made to close an unixFile, if there are ** other unixFile open on the same inode that are holding locks, the call ** to close() the file descriptor is deferred until all of the locks clear. @@ -32725,7 +38782,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){ ** not posix compliant. Under LinuxThreads, a lock created by thread ** A cannot be modified or overridden by a different thread B. ** Only thread A can modify the lock. Locking behavior is correct -** if the appliation uses the newer Native Posix Thread Library (NPTL) +** if the application uses the newer Native Posix Thread Library (NPTL) ** on linux - with NPTL a lock created by thread A can override locks ** in thread B. But there is no way to know at compile-time which ** threading library is being used. So there is no way to know at @@ -32735,7 +38792,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){ ** ** SQLite used to support LinuxThreads. But support for LinuxThreads ** was dropped beginning with version 3.7.0. SQLite will still work with -** LinuxThreads provided that (1) there is no more than one connection +** LinuxThreads provided that (1) there is no more than one connection ** per database file in the same process and (2) database connections ** do not move across threads. */ @@ -32752,7 +38809,7 @@ struct unixFileId { /* We are told that some versions of Android contain a bug that ** sizes ino_t at only 32-bits instead of 64-bits. (See ** https://android-review.googlesource.com/#/c/115351/3/dist/sqlite3.c) - ** To work around this, always allocate 64-bits for the inode number. + ** To work around this, always allocate 64-bits for the inode number. ** On small machines that only have 32-bit inodes, this wastes 4 bytes, ** but that should not be a big deal. */ /* WAS: ino_t ino; */ @@ -32762,22 +38819,39 @@ struct unixFileId { /* ** An instance of the following structure is allocated for each open -** inode. Or, on LinuxThreads, there is one of these structures for -** each inode opened by each thread. +** inode. ** ** A single inode can have multiple file descriptors, so each unixFile ** structure contains a pointer to an instance of this object and this ** object keeps a count of the number of unixFile pointing to it. +** +** Mutex rules: +** +** (1) Only the pLockMutex mutex must be held in order to read or write +** any of the locking fields: +** nShared, nLock, eFileLock, bProcessLock, pUnused +** +** (2) When nRef>0, then the following fields are unchanging and can +** be read (but not written) without holding any mutex: +** fileId, pLockMutex +** +** (3) With the exceptions above, all the fields may only be read +** or written while holding the global unixBigLock mutex. +** +** Deadlock prevention: The global unixBigLock mutex may not +** be acquired while holding the pLockMutex mutex. If both unixBigLock +** and pLockMutex are needed, then unixBigLock must be acquired first. */ struct unixInodeInfo { struct unixFileId fileId; /* The lookup key */ - int nShared; /* Number of SHARED locks held */ - unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */ - unsigned char bProcessLock; /* An exclusive process lock is held */ + sqlite3_mutex *pLockMutex; /* Hold this mutex for... */ + int nShared; /* Number of SHARED locks held */ + int nLock; /* Number of outstanding file locks */ + unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */ + unsigned char bProcessLock; /* An exclusive process lock is held */ + UnixUnusedFd *pUnused; /* Unused file descriptors to close */ int nRef; /* Number of pointers to this structure */ unixShmNode *pShmNode; /* Shared memory associated with this inode */ - int nLock; /* Number of outstanding file locks */ - UnixUnusedFd *pUnused; /* Unused file descriptors to close */ unixInodeInfo *pNext; /* List of all unixInodeInfo objects */ unixInodeInfo *pPrev; /* .... doubly linked */ #if SQLITE_ENABLE_LOCKING_STYLE @@ -32791,9 +38865,26 @@ struct unixInodeInfo { /* ** A lists of all unixInodeInfo objects. +** +** Must hold unixBigLock in order to read or write this variable. */ static unixInodeInfo *inodeList = 0; /* All unixInodeInfo objects */ -static unsigned int nUnusedFd = 0; /* Total unused file descriptors */ + +#ifdef SQLITE_DEBUG +/* +** True if the inode mutex (on the unixFile.pFileMutex field) is held, or not. +** This routine is used only within assert() to help verify correct mutex +** usage. +*/ +int unixFileMutexHeld(unixFile *pFile){ + assert( pFile->pInode ); + return sqlite3_mutex_held(pFile->pInode->pLockMutex); +} +int unixFileMutexNotheld(unixFile *pFile){ + assert( pFile->pInode ); + return sqlite3_mutex_notheld(pFile->pInode->pLockMutex); +} +#endif /* ** @@ -32806,7 +38897,7 @@ static unsigned int nUnusedFd = 0; /* Total unused file descriptors */ ** strerror_r(). ** ** The first argument passed to the macro should be the error code that -** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). +** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). ** The two subsequent arguments should be the name of the OS function that ** failed (e.g. "unlink", "open") and the associated file-system path, ** if any. @@ -32824,7 +38915,7 @@ static int unixLogErrorAtLine( /* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use ** the strerror() function to obtain the human-readable error message ** equivalent to errno. Otherwise, use strerror_r(). - */ + */ #if SQLITE_THREADSAFE && defined(HAVE_STRERROR_R) char aErr[80]; memset(aErr, 0, sizeof(aErr)); @@ -32832,18 +38923,18 @@ static int unixLogErrorAtLine( /* If STRERROR_R_CHAR_P (set by autoconf scripts) or __USE_GNU is defined, ** assume that the system provides the GNU version of strerror_r() that - ** returns a pointer to a buffer containing the error message. That pointer - ** may point to aErr[], or it may point to some static storage somewhere. - ** Otherwise, assume that the system provides the POSIX version of + ** returns a pointer to a buffer containing the error message. That pointer + ** may point to aErr[], or it may point to some static storage somewhere. + ** Otherwise, assume that the system provides the POSIX version of ** strerror_r(), which always writes an error message into aErr[]. ** ** If the code incorrectly assumes that it is the POSIX version that is ** available, the error message will often be an empty string. Not a - ** huge problem. Incorrectly concluding that the GNU version is available + ** huge problem. Incorrectly concluding that the GNU version is available ** could lead to a segfault though. */ #if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU) - zErr = + zErr = # endif strerror_r(iErrno, aErr, sizeof(aErr)-1); @@ -32893,17 +38984,17 @@ static void storeLastErrno(unixFile *pFile, int error){ } /* -** Close all file descriptors accumuated in the unixInodeInfo->pUnused list. -*/ +** Close all file descriptors accumulated in the unixInodeInfo->pUnused list. +*/ static void closePendingFds(unixFile *pFile){ unixInodeInfo *pInode = pFile->pInode; UnixUnusedFd *p; UnixUnusedFd *pNext; + assert( unixFileMutexHeld(pFile) ); for(p=pInode->pUnused; p; p=pNext){ pNext = p->pNext; robust_close(pFile, p->fd, __LINE__); sqlite3_free(p); - nUnusedFd--; } pInode->pUnused = 0; } @@ -32911,17 +39002,20 @@ static void closePendingFds(unixFile *pFile){ /* ** Release a unixInodeInfo structure previously allocated by findInodeInfo(). ** -** The mutex entered using the unixEnterMutex() function must be held -** when this function is called. +** The global mutex must be held when this routine is called, but the mutex +** on the inode being deleted must NOT be held. */ static void releaseInodeInfo(unixFile *pFile){ unixInodeInfo *pInode = pFile->pInode; assert( unixMutexHeld() ); + assert( unixFileMutexNotheld(pFile) ); if( ALWAYS(pInode) ){ pInode->nRef--; if( pInode->nRef==0 ){ assert( pInode->pShmNode==0 ); + sqlite3_mutex_enter(pInode->pLockMutex); closePendingFds(pFile); + sqlite3_mutex_leave(pInode->pLockMutex); if( pInode->pPrev ){ assert( pInode->pPrev->pNext==pInode ); pInode->pPrev->pNext = pInode->pNext; @@ -32933,10 +39027,10 @@ static void releaseInodeInfo(unixFile *pFile){ assert( pInode->pNext->pPrev==pInode ); pInode->pNext->pPrev = pInode->pPrev; } + sqlite3_mutex_free(pInode->pLockMutex); sqlite3_free(pInode); } } - assert( inodeList!=0 || nUnusedFd==0 ); } /* @@ -32944,8 +39038,7 @@ static void releaseInodeInfo(unixFile *pFile){ ** describes that file descriptor. Create a new one if necessary. The ** return value might be uninitialized if an error occurs. ** -** The mutex entered using the unixEnterMutex() function must be held -** when this function is called. +** The global mutex must held when calling this routine. ** ** Return an appropriate error code. */ @@ -33006,7 +39099,7 @@ static int findInodeInfo( #else fileId.ino = (u64)statbuf.st_ino; #endif - assert( inodeList!=0 || nUnusedFd==0 ); + assert( unixMutexHeld() ); pInode = inodeList; while( pInode && memcmp(&fileId, &pInode->fileId, sizeof(fileId)) ){ pInode = pInode->pNext; @@ -33018,7 +39111,15 @@ static int findInodeInfo( } memset(pInode, 0, sizeof(*pInode)); memcpy(&pInode->fileId, &fileId, sizeof(fileId)); + if( sqlite3GlobalConfig.bCoreMutex ){ + pInode->pLockMutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); + if( pInode->pLockMutex==0 ){ + sqlite3_free(pInode); + return SQLITE_NOMEM_BKPT; + } + } pInode->nRef = 1; + assert( unixMutexHeld() ); pInode->pNext = inodeList; pInode->pPrev = 0; if( inodeList ) inodeList->pPrev = pInode; @@ -33039,7 +39140,7 @@ static int fileHasMoved(unixFile *pFile){ #else struct stat buf; return pFile->pInode!=0 && - (osStat(pFile->zPath, &buf)!=0 + (osStat(pFile->zPath, &buf)!=0 || (u64)buf.st_ino!=pFile->pInode->fileId.ino); #endif } @@ -33096,7 +39197,7 @@ static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ assert( pFile ); assert( pFile->eFileLock<=SHARED_LOCK ); - unixEnterMutex(); /* Because pFile->pInode is shared across threads */ + sqlite3_mutex_enter(pFile->pInode->pLockMutex); /* Check if a thread in this process holds such a lock */ if( pFile->pInode->eFileLock>SHARED_LOCK ){ @@ -33120,14 +39221,17 @@ static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ } } #endif - - unixLeaveMutex(); + + sqlite3_mutex_leave(pFile->pInode->pLockMutex); OSTRACE(("TEST WR-LOCK %d %d %d (unix)\n", pFile->h, rc, reserved)); *pResOut = reserved; return rc; } +/* Forward declaration*/ +static int unixSleep(sqlite3_vfs*,int); + /* ** Set a posix-advisory-lock. ** @@ -33149,16 +39253,17 @@ static int osSetPosixAdvisoryLock( struct flock *pLock, /* The description of the lock */ unixFile *pFile /* Structure holding timeout value */ ){ + int tm = pFile->iBusyTimeout; int rc = osFcntl(h,F_SETLK,pLock); - while( rc<0 && pFile->iBusyTimeout>0 ){ + while( rc<0 && tm>0 ){ /* On systems that support some kind of blocking file lock with a timeout, ** make appropriate changes here to invoke that blocking file lock. On ** generic posix, however, there is no such API. So we simply try the ** lock once every millisecond until either the timeout expires, or until ** the lock is obtained. */ - usleep(1000); + unixSleep(0,1000); rc = osFcntl(h,F_SETLK,pLock); - pFile->iBusyTimeout--; + tm--; } return rc; } @@ -33166,7 +39271,7 @@ static int osSetPosixAdvisoryLock( /* -** Attempt to set a system-lock on the file pFile. The lock is +** Attempt to set a system-lock on the file pFile. The lock is ** described by pLock. ** ** If the pFile was opened read/write from unix-excl, then the only lock @@ -33187,8 +39292,8 @@ static int osSetPosixAdvisoryLock( static int unixFileLock(unixFile *pFile, struct flock *pLock){ int rc; unixInodeInfo *pInode = pFile->pInode; - assert( unixMutexHeld() ); assert( pInode!=0 ); + assert( sqlite3_mutex_held(pInode->pLockMutex) ); if( (pFile->ctrlFlags & (UNIXFILE_EXCL|UNIXFILE_RDONLY))==UNIXFILE_EXCL ){ if( pInode->bProcessLock==0 ){ struct flock lock; @@ -33227,7 +39332,7 @@ static int unixFileLock(unixFile *pFile, struct flock *pLock){ ** ** UNLOCKED -> SHARED ** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE +** SHARED -> EXCLUSIVE ** RESERVED -> (PENDING) -> EXCLUSIVE ** PENDING -> EXCLUSIVE ** @@ -33242,7 +39347,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** slightly in order to be compatible with Windows95 systems simultaneously ** accessing the same database file, in case that is ever required. ** - ** Symbols defined in os.h indentify the 'pending byte' and the 'reserved + ** Symbols defined in os.h identify the 'pending byte' and the 'reserved ** byte', each single bytes at well known offsets, and the 'shared byte ** range', a range of 510 bytes at a well known offset. ** @@ -33250,7 +39355,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** byte'. If this is successful, 'shared byte range' is read-locked ** and the lock on the 'pending byte' released. (Legacy note: When ** SQLite was first developed, Windows95 systems were still very common, - ** and Widnows95 lacks a shared-lock capability. So on Windows95, a + ** and Windows95 lacks a shared-lock capability. So on Windows95, a ** single randomly selected by from the 'shared byte range' is locked. ** Windows95 is now pretty much extinct, but this work-around for the ** lack of shared-locks on Windows95 lives on, for backwards @@ -33258,21 +39363,22 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** ** A process may only obtain a RESERVED lock after it has a SHARED lock. ** A RESERVED lock is implemented by grabbing a write-lock on the - ** 'reserved byte'. + ** 'reserved byte'. ** - ** A process may only obtain a PENDING lock after it has obtained a - ** SHARED lock. A PENDING lock is implemented by obtaining a write-lock - ** on the 'pending byte'. This ensures that no new SHARED locks can be - ** obtained, but existing SHARED locks are allowed to persist. A process - ** does not have to obtain a RESERVED lock on the way to a PENDING lock. - ** This property is used by the algorithm for rolling back a journal file - ** after a crash. + ** An EXCLUSIVE lock may only be requested after either a SHARED or + ** RESERVED lock is held. An EXCLUSIVE lock is implemented by obtaining + ** a write-lock on the entire 'shared byte range'. Since all other locks + ** require a read-lock on one of the bytes within this range, this ensures + ** that no other locks are held on the database. ** - ** An EXCLUSIVE lock, obtained after a PENDING lock is held, is - ** implemented by obtaining a write-lock on the entire 'shared byte - ** range'. Since all other locks require a read-lock on one of the bytes - ** within this range, this ensures that no other locks are held on the - ** database. + ** If a process that holds a RESERVED lock requests an EXCLUSIVE, then + ** a PENDING lock is obtained first. A PENDING lock is implemented by + ** obtaining a write-lock on the 'pending byte'. This ensures that no new + ** SHARED locks can be obtained, but existing SHARED locks are allowed to + ** persist. If the call to this function fails to obtain the EXCLUSIVE + ** lock in this case, it holds the PENDING lock instead. The client may + ** then re-attempt the EXCLUSIVE lock later on, after existing SHARED + ** locks have cleared. */ int rc = SQLITE_OK; unixFile *pFile = (unixFile*)id; @@ -33298,7 +39404,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ /* Make sure the locking sequence is correct. ** (1) We never move from unlocked to anything higher than shared lock. - ** (2) SQLite never explicitly requests a pendig lock. + ** (2) SQLite never explicitly requests a pending lock. ** (3) A shared lock is always held when a reserve lock is requested. */ assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); @@ -33307,13 +39413,13 @@ static int unixLock(sqlite3_file *id, int eFileLock){ /* This mutex is needed because pFile->pInode is shared across threads */ - unixEnterMutex(); pInode = pFile->pInode; + sqlite3_mutex_enter(pInode->pLockMutex); /* If some thread using this PID has a lock via a different unixFile* ** handle that precludes the requested lock, return BUSY. */ - if( (pFile->eFileLock!=pInode->eFileLock && + if( (pFile->eFileLock!=pInode->eFileLock && (pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK)) ){ rc = SQLITE_BUSY; @@ -33324,7 +39430,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** has a SHARED or RESERVED lock, then increment reference counts and ** return SQLITE_OK. */ - if( eFileLock==SHARED_LOCK && + if( eFileLock==SHARED_LOCK && (pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){ assert( eFileLock==SHARED_LOCK ); assert( pFile->eFileLock==0 ); @@ -33342,8 +39448,8 @@ static int unixLock(sqlite3_file *id, int eFileLock){ */ lock.l_len = 1L; lock.l_whence = SEEK_SET; - if( eFileLock==SHARED_LOCK - || (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLockeFileLock==RESERVED_LOCK) ){ lock.l_type = (eFileLock==SHARED_LOCK?F_RDLCK:F_WRLCK); lock.l_start = PENDING_BYTE; @@ -33354,6 +39460,9 @@ static int unixLock(sqlite3_file *id, int eFileLock){ storeLastErrno(pFile, tErrno); } goto end_lock; + }else if( eFileLock==EXCLUSIVE_LOCK ){ + pFile->eFileLock = PENDING_LOCK; + pInode->eFileLock = PENDING_LOCK; } } @@ -33381,7 +39490,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ if( unixFileLock(pFile, &lock) && rc==SQLITE_OK ){ /* This could happen with a network mount */ tErrno = errno; - rc = SQLITE_IOERR_UNLOCK; + rc = SQLITE_IOERR_UNLOCK; } if( rc ){ @@ -33423,7 +39532,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ } } } - + #ifdef SQLITE_DEBUG /* Set up the transaction-counter change checking flags when @@ -33441,18 +39550,14 @@ static int unixLock(sqlite3_file *id, int eFileLock){ } #endif - if( rc==SQLITE_OK ){ pFile->eFileLock = eFileLock; pInode->eFileLock = eFileLock; - }else if( eFileLock==EXCLUSIVE_LOCK ){ - pFile->eFileLock = PENDING_LOCK; - pInode->eFileLock = PENDING_LOCK; } end_lock: - unixLeaveMutex(); - OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock), + sqlite3_mutex_leave(pInode->pLockMutex); + OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock), rc==SQLITE_OK ? "ok" : "failed")); return rc; } @@ -33464,11 +39569,11 @@ end_lock: static void setPendingFd(unixFile *pFile){ unixInodeInfo *pInode = pFile->pInode; UnixUnusedFd *p = pFile->pPreallocatedUnused; + assert( unixFileMutexHeld(pFile) ); p->pNext = pInode->pUnused; pInode->pUnused = p; pFile->h = -1; pFile->pPreallocatedUnused = 0; - nUnusedFd++; } /* @@ -33477,11 +39582,11 @@ static void setPendingFd(unixFile *pFile){ ** ** If the locking level of the file descriptor is already at or below ** the requested locking level, this routine is a no-op. -** +** ** If handleNFSUnlock is true, then on downgrading an EXCLUSIVE_LOCK to SHARED ** the byte range is divided into 2 parts and the first part is unlocked then -** set to a read lock, then the other part is simply unlocked. This works -** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to +** set to a read lock, then the other part is simply unlocked. This works +** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to ** remove the write lock on a region when a read lock is set. */ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ @@ -33499,8 +39604,8 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ if( pFile->eFileLock<=eFileLock ){ return SQLITE_OK; } - unixEnterMutex(); pInode = pFile->pInode; + sqlite3_mutex_enter(pInode->pLockMutex); assert( pInode->nShared!=0 ); if( pFile->eFileLock>SHARED_LOCK ){ assert( pInode->eFileLock==pFile->eFileLock ); @@ -33519,7 +39624,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ /* downgrading to a shared lock on NFS involves clearing the write lock ** before establishing the readlock - to avoid a race condition we downgrade - ** the lock in 2 blocks, so that part of the range will be covered by a + ** the lock in 2 blocks, so that part of the range will be covered by a ** write lock until the rest is covered by a read lock: ** 1: [WWWWW] ** 2: [....W] @@ -33535,7 +39640,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ if( handleNFSUnlock ){ int tErrno; /* Error code from system call errors */ off_t divSize = SHARED_SIZE - 1; - + lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = SHARED_FIRST; @@ -33577,11 +39682,11 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ lock.l_len = SHARED_SIZE; if( unixFileLock(pFile, &lock) ){ /* In theory, the call to unixFileLock() cannot fail because another - ** process is holding an incompatible lock. If it does, this + ** process is holding an incompatible lock. If it does, this ** indicates that the other process is not following the locking ** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning - ** SQLITE_BUSY would confuse the upper layer (in practice it causes - ** an assert to fail). */ + ** SQLITE_BUSY would confuse the upper layer (in practice it causes + ** an assert to fail). */ rc = SQLITE_IOERR_RDLOCK; storeLastErrno(pFile, errno); goto end_unlock; @@ -33626,14 +39731,14 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ */ pInode->nLock--; assert( pInode->nLock>=0 ); - if( pInode->nLock==0 ){ - closePendingFds(pFile); - } + if( pInode->nLock==0 ) closePendingFds(pFile); } end_unlock: - unixLeaveMutex(); - if( rc==SQLITE_OK ) pFile->eFileLock = eFileLock; + sqlite3_mutex_leave(pInode->pLockMutex); + if( rc==SQLITE_OK ){ + pFile->eFileLock = eFileLock; + } return rc; } @@ -33657,7 +39762,7 @@ static void unixUnmapfile(unixFile *pFd); #endif /* -** This function performs the parts of the "close file" operation +** This function performs the parts of the "close file" operation ** common to all locking schemes. It closes the directory and file ** handles, if they are valid, and sets all fields of the unixFile ** structure to 0. @@ -33704,23 +39809,30 @@ static int closeUnixFile(sqlite3_file *id){ static int unixClose(sqlite3_file *id){ int rc = SQLITE_OK; unixFile *pFile = (unixFile *)id; + unixInodeInfo *pInode = pFile->pInode; + + assert( pInode!=0 ); verifyDbFile(pFile); unixUnlock(id, NO_LOCK); + assert( unixFileMutexNotheld(pFile) ); unixEnterMutex(); /* unixFile.pInode is always valid here. Otherwise, a different close ** routine (e.g. nolockClose()) would be called instead. */ assert( pFile->pInode->nLock>0 || pFile->pInode->bProcessLock==0 ); - if( ALWAYS(pFile->pInode) && pFile->pInode->nLock ){ + sqlite3_mutex_enter(pInode->pLockMutex); + if( pInode->nLock ){ /* If there are outstanding locks, do not actually close the file just ** yet because that would clear those locks. Instead, add the file - ** descriptor to pInode->pUnused list. It will be automatically closed + ** descriptor to pInode->pUnused list. It will be automatically closed ** when the last lock is cleared. */ setPendingFd(pFile); } + sqlite3_mutex_leave(pInode->pLockMutex); releaseInodeInfo(pFile); + assert( pFile->pShm==0 ); rc = closeUnixFile(id); unixLeaveMutex(); return rc; @@ -33814,7 +39926,7 @@ static int dotlockCheckReservedLock(sqlite3_file *id, int *pResOut) { unixFile *pFile = (unixFile*)id; SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - + assert( pFile ); reserved = osAccess((const char*)pFile->lockingContext, 0)==0; OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved)); @@ -33868,7 +39980,7 @@ static int dotlockLock(sqlite3_file *id, int eFileLock) { #endif return SQLITE_OK; } - + /* grab an exclusive lock */ rc = osMkdir(zLockFile, 0777); if( rc<0 ){ @@ -33883,8 +39995,8 @@ static int dotlockLock(sqlite3_file *id, int eFileLock) { } } return rc; - } - + } + /* got it, set the type and return ok */ pFile->eFileLock = eFileLock; return rc; @@ -33908,7 +40020,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock, pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); - + /* no-op if possible */ if( pFile->eFileLock==eFileLock ){ return SQLITE_OK; @@ -33921,7 +40033,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { pFile->eFileLock = SHARED_LOCK; return SQLITE_OK; } - + /* To fully unlock the database, delete the lock file */ assert( eFileLock==NO_LOCK ); rc = osRmdir(zLockFile); @@ -33933,7 +40045,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { rc = SQLITE_IOERR_UNLOCK; storeLastErrno(pFile, tErrno); } - return rc; + return rc; } pFile->eFileLock = NO_LOCK; return SQLITE_OK; @@ -33980,7 +40092,7 @@ static int robust_flock(int fd, int op){ #else # define robust_flock(a,b) flock(a,b) #endif - + /* ** This routine checks if there is a RESERVED lock held on the specified @@ -33992,16 +40104,16 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ int rc = SQLITE_OK; int reserved = 0; unixFile *pFile = (unixFile*)id; - + SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - + assert( pFile ); - + /* Check if a thread in this process holds such a lock */ if( pFile->eFileLock>SHARED_LOCK ){ reserved = 1; } - + /* Otherwise see if some other process holds it. */ if( !reserved ){ /* attempt to get the lock */ @@ -34012,7 +40124,7 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ if ( lrc ) { int tErrno = errno; /* unlock failed with an error */ - lrc = SQLITE_IOERR_UNLOCK; + lrc = SQLITE_IOERR_UNLOCK; storeLastErrno(pFile, tErrno); rc = lrc; } @@ -34020,7 +40132,7 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ int tErrno = errno; reserved = 1; /* someone else might have it reserved */ - lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); + lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); if( IS_LOCK_ERROR(lrc) ){ storeLastErrno(pFile, tErrno); rc = lrc; @@ -34074,15 +40186,15 @@ static int flockLock(sqlite3_file *id, int eFileLock) { assert( pFile ); - /* if we already have a lock, it is exclusive. + /* if we already have a lock, it is exclusive. ** Just adjust level and punt on outta here. */ if (pFile->eFileLock > NO_LOCK) { pFile->eFileLock = eFileLock; return SQLITE_OK; } - + /* grab an exclusive lock */ - + if (robust_flock(pFile->h, LOCK_EX | LOCK_NB)) { int tErrno = errno; /* didn't get, must be busy */ @@ -34094,7 +40206,7 @@ static int flockLock(sqlite3_file *id, int eFileLock) { /* got it, set the type and return ok */ pFile->eFileLock = eFileLock; } - OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock), + OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock), rc==SQLITE_OK ? "ok" : "failed")); #ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS if( (rc & 0xff) == SQLITE_IOERR ){ @@ -34114,23 +40226,23 @@ static int flockLock(sqlite3_file *id, int eFileLock) { */ static int flockUnlock(sqlite3_file *id, int eFileLock) { unixFile *pFile = (unixFile*)id; - + assert( pFile ); OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock, pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); - + /* no-op if possible */ if( pFile->eFileLock==eFileLock ){ return SQLITE_OK; } - + /* shared can just be set because we always have an exclusive */ if (eFileLock==SHARED_LOCK) { pFile->eFileLock = eFileLock; return SQLITE_OK; } - + /* no, really, unlock. */ if( robust_flock(pFile->h, LOCK_UN) ){ #ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS @@ -34181,14 +40293,14 @@ static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) { unixFile *pFile = (unixFile*)id; SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - + assert( pFile ); /* Check if a thread in this process holds such a lock */ if( pFile->eFileLock>SHARED_LOCK ){ reserved = 1; } - + /* Otherwise see if some other process holds it. */ if( !reserved ){ sem_t *pSem = pFile->pInode->pSem; @@ -34247,14 +40359,14 @@ static int semXLock(sqlite3_file *id, int eFileLock) { sem_t *pSem = pFile->pInode->pSem; int rc = SQLITE_OK; - /* if we already have a lock, it is exclusive. + /* if we already have a lock, it is exclusive. ** Just adjust level and punt on outta here. */ if (pFile->eFileLock > NO_LOCK) { pFile->eFileLock = eFileLock; rc = SQLITE_OK; goto sem_end_lock; } - + /* lock semaphore now but bail out when already locked. */ if( sem_trywait(pSem)==-1 ){ rc = SQLITE_BUSY; @@ -34284,18 +40396,18 @@ static int semXUnlock(sqlite3_file *id, int eFileLock) { OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock, pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); - + /* no-op if possible */ if( pFile->eFileLock==eFileLock ){ return SQLITE_OK; } - + /* shared can just be set because we always have an exclusive */ if (eFileLock==SHARED_LOCK) { pFile->eFileLock = eFileLock; return SQLITE_OK; } - + /* no, really unlock. */ if ( sem_post(pSem)==-1 ) { int rc, tErrno = errno; @@ -34303,7 +40415,7 @@ static int semXUnlock(sqlite3_file *id, int eFileLock) { if( IS_LOCK_ERROR(rc) ){ storeLastErrno(pFile, tErrno); } - return rc; + return rc; } pFile->eFileLock = NO_LOCK; return SQLITE_OK; @@ -34317,6 +40429,7 @@ static int semXClose(sqlite3_file *id) { unixFile *pFile = (unixFile*)id; semXUnlock(id, NO_LOCK); assert( pFile ); + assert( unixFileMutexNotheld(pFile) ); unixEnterMutex(); releaseInodeInfo(pFile); unixLeaveMutex(); @@ -34368,7 +40481,7 @@ struct ByteRangeLockPB2 /* ** This is a utility for setting or clearing a bit-range lock on an ** AFP filesystem. -** +** ** Return SQLITE_OK on success, SQLITE_BUSY on failure. */ static int afpSetLock( @@ -34380,14 +40493,14 @@ static int afpSetLock( ){ struct ByteRangeLockPB2 pb; int err; - + pb.unLockFlag = setLockFlag ? 0 : 1; pb.startEndFlag = 0; pb.offset = offset; - pb.length = length; + pb.length = length; pb.fd = pFile->h; - - OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n", + + OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n", (setLockFlag?"ON":"OFF"), pFile->h, (pb.fd==-1?"[testval-1]":""), offset, length)); err = fsctl(path, afpfsByteRangeLock2FSCTL, &pb, 0); @@ -34422,27 +40535,26 @@ static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){ int reserved = 0; unixFile *pFile = (unixFile*)id; afpLockingContext *context; - + SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - + assert( pFile ); context = (afpLockingContext *) pFile->lockingContext; if( context->reserved ){ *pResOut = 1; return SQLITE_OK; } - unixEnterMutex(); /* Because pFile->pInode is shared across threads */ - + sqlite3_mutex_enter(pFile->pInode->pLockMutex); /* Check if a thread in this process holds such a lock */ if( pFile->pInode->eFileLock>SHARED_LOCK ){ reserved = 1; } - + /* Otherwise see if some other process holds it. */ if( !reserved ){ /* lock the RESERVED byte */ - int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); + int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); if( SQLITE_OK==lrc ){ /* if we succeeded in taking the reserved lock, unlock it to restore ** the original state */ @@ -34455,10 +40567,10 @@ static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){ rc=lrc; } } - - unixLeaveMutex(); + + sqlite3_mutex_leave(pFile->pInode->pLockMutex); OSTRACE(("TEST WR-LOCK %d %d %d (afp)\n", pFile->h, rc, reserved)); - + *pResOut = reserved; return rc; } @@ -34492,7 +40604,7 @@ static int afpLock(sqlite3_file *id, int eFileLock){ unixFile *pFile = (unixFile*)id; unixInodeInfo *pInode = pFile->pInode; afpLockingContext *context = (afpLockingContext *) pFile->lockingContext; - + assert( pFile ); OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), @@ -34510,33 +40622,33 @@ static int afpLock(sqlite3_file *id, int eFileLock){ /* Make sure the locking sequence is correct ** (1) We never move from unlocked to anything higher than shared lock. - ** (2) SQLite never explicitly requests a pendig lock. + ** (2) SQLite never explicitly requests a pending lock. ** (3) A shared lock is always held when a reserve lock is requested. */ assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); assert( eFileLock!=PENDING_LOCK ); assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK ); - + /* This mutex is needed because pFile->pInode is shared across threads */ - unixEnterMutex(); pInode = pFile->pInode; + sqlite3_mutex_enter(pInode->pLockMutex); /* If some thread using this PID has a lock via a different unixFile* ** handle that precludes the requested lock, return BUSY. */ - if( (pFile->eFileLock!=pInode->eFileLock && + if( (pFile->eFileLock!=pInode->eFileLock && (pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK)) ){ rc = SQLITE_BUSY; goto afp_end_lock; } - + /* If a SHARED lock is requested, and some thread using this PID already ** has a SHARED or RESERVED lock, then increment reference counts and ** return SQLITE_OK. */ - if( eFileLock==SHARED_LOCK && + if( eFileLock==SHARED_LOCK && (pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){ assert( eFileLock==SHARED_LOCK ); assert( pFile->eFileLock==0 ); @@ -34546,12 +40658,12 @@ static int afpLock(sqlite3_file *id, int eFileLock){ pInode->nLock++; goto afp_end_lock; } - + /* A PENDING lock is needed before acquiring a SHARED lock and before ** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will ** be released. */ - if( eFileLock==SHARED_LOCK + if( eFileLock==SHARED_LOCK || (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLocknShared==0 ); assert( pInode->eFileLock==0 ); - + mask = (sizeof(long)==8) ? LARGEST_INT64 : 0x7fffffff; /* Now get the read-lock SHARED_LOCK */ /* note that the quality of the randomness doesn't matter that much */ - lk = random(); + lk = random(); pInode->sharedByte = (lk & mask)%(SHARED_SIZE - 1); - lrc1 = afpSetLock(context->dbPath, pFile, + lrc1 = afpSetLock(context->dbPath, pFile, SHARED_FIRST+pInode->sharedByte, 1, 1); if( IS_LOCK_ERROR(lrc1) ){ lrc1Errno = pFile->lastErrno; } /* Drop the temporary PENDING lock */ lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); - + if( IS_LOCK_ERROR(lrc1) ) { storeLastErrno(pFile, lrc1Errno); rc = lrc1; @@ -34619,34 +40731,34 @@ static int afpLock(sqlite3_file *id, int eFileLock){ } if (!failed && eFileLock == EXCLUSIVE_LOCK) { /* Acquire an EXCLUSIVE lock */ - - /* Remove the shared lock before trying the range. we'll need to + + /* Remove the shared lock before trying the range. we'll need to ** reestablish the shared lock if we can't get the afpUnlock */ if( !(failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST + pInode->sharedByte, 1, 0)) ){ int failed2 = SQLITE_OK; - /* now attemmpt to get the exclusive lock range */ - failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST, + /* now attempt to get the exclusive lock range */ + failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST, SHARED_SIZE, 1); - if( failed && (failed2 = afpSetLock(context->dbPath, pFile, + if( failed && (failed2 = afpSetLock(context->dbPath, pFile, SHARED_FIRST + pInode->sharedByte, 1, 1)) ){ /* Can't reestablish the shared lock. Sqlite can't deal, this is ** a critical I/O error */ - rc = ((failed & 0xff) == SQLITE_IOERR) ? failed2 : + rc = ((failed & 0xff) == SQLITE_IOERR) ? failed2 : SQLITE_IOERR_LOCK; goto afp_end_lock; - } + } }else{ - rc = failed; + rc = failed; } } if( failed ){ rc = failed; } } - + if( rc==SQLITE_OK ){ pFile->eFileLock = eFileLock; pInode->eFileLock = eFileLock; @@ -34654,10 +40766,10 @@ static int afpLock(sqlite3_file *id, int eFileLock){ pFile->eFileLock = PENDING_LOCK; pInode->eFileLock = PENDING_LOCK; } - + afp_end_lock: - unixLeaveMutex(); - OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock), + sqlite3_mutex_leave(pInode->pLockMutex); + OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock), rc==SQLITE_OK ? "ok" : "failed")); return rc; } @@ -34688,15 +40800,15 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { if( pFile->eFileLock<=eFileLock ){ return SQLITE_OK; } - unixEnterMutex(); pInode = pFile->pInode; + sqlite3_mutex_enter(pInode->pLockMutex); assert( pInode->nShared!=0 ); if( pFile->eFileLock>SHARED_LOCK ){ assert( pInode->eFileLock==pFile->eFileLock ); SimulateIOErrorBenign(1); SimulateIOError( h=(-1) ) SimulateIOErrorBenign(0); - + #ifdef SQLITE_DEBUG /* When reducing a lock such that other processes can start ** reading the database file again, make sure that the @@ -34711,7 +40823,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { || pFile->transCntrChng==1 ); pFile->inNormalWrite = 0; #endif - + if( pFile->eFileLock==EXCLUSIVE_LOCK ){ rc = afpSetLock(context->dbPath, pFile, SHARED_FIRST, SHARED_SIZE, 0); if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1) ){ @@ -34724,11 +40836,11 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { } if( rc==SQLITE_OK && pFile->eFileLock>=PENDING_LOCK ){ rc = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); - } + } if( rc==SQLITE_OK && pFile->eFileLock>=RESERVED_LOCK && context->reserved ){ rc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0); - if( !rc ){ - context->reserved = 0; + if( !rc ){ + context->reserved = 0; } } if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1)){ @@ -34758,33 +40870,39 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { if( rc==SQLITE_OK ){ pInode->nLock--; assert( pInode->nLock>=0 ); - if( pInode->nLock==0 ){ - closePendingFds(pFile); - } + if( pInode->nLock==0 ) closePendingFds(pFile); } } - - unixLeaveMutex(); - if( rc==SQLITE_OK ) pFile->eFileLock = eFileLock; + + sqlite3_mutex_leave(pInode->pLockMutex); + if( rc==SQLITE_OK ){ + pFile->eFileLock = eFileLock; + } return rc; } /* -** Close a file & cleanup AFP specific locking context +** Close a file & cleanup AFP specific locking context */ static int afpClose(sqlite3_file *id) { int rc = SQLITE_OK; unixFile *pFile = (unixFile*)id; assert( id!=0 ); afpUnlock(id, NO_LOCK); + assert( unixFileMutexNotheld(pFile) ); unixEnterMutex(); - if( pFile->pInode && pFile->pInode->nLock ){ - /* If there are outstanding locks, do not actually close the file just - ** yet because that would clear those locks. Instead, add the file - ** descriptor to pInode->aPending. It will be automatically closed when - ** the last lock is cleared. - */ - setPendingFd(pFile); + if( pFile->pInode ){ + unixInodeInfo *pInode = pFile->pInode; + sqlite3_mutex_enter(pInode->pLockMutex); + if( pInode->nLock ){ + /* If there are outstanding locks, do not actually close the file just + ** yet because that would clear those locks. Instead, add the file + ** descriptor to pInode->aPending. It will be automatically closed when + ** the last lock is cleared. + */ + setPendingFd(pFile); + } + sqlite3_mutex_leave(pInode->pLockMutex); } releaseInodeInfo(pFile); sqlite3_free(pFile->lockingContext); @@ -34822,7 +40940,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){ /* ** The code above is the NFS lock implementation. The code is specific ** to MacOSX and does not work on other unix platforms. No alternative -** is available. +** is available. ** ********************* End of the NFS lock implementation ********************** ******************************************************************************/ @@ -34830,7 +40948,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){ /****************************************************************************** **************** Non-locking sqlite3_file methods ***************************** ** -** The next division contains implementations for all methods of the +** The next division contains implementations for all methods of the ** sqlite3_file object other than the locking methods. The locking ** methods were defined in divisions above (one locking method per ** division). Those methods that are common to all locking modes @@ -34838,15 +40956,9 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){ */ /* -** Seek to the offset passed as the second argument, then read cnt +** Seek to the offset passed as the second argument, then read cnt ** bytes into pBuf. Return the number of bytes actually read. ** -** NB: If you define USE_PREAD or USE_PREAD64, then it might also -** be necessary to define _XOPEN_SOURCE to be 500. This varies from -** one system to another. Since SQLite does not define USE_PREAD -** in any form by default, we will not attempt to define _XOPEN_SOURCE. -** See tickets #2741 and #2681. -** ** To avoid stomping the errno value on a failed read the lastErrno value ** is set before returning. */ @@ -34900,8 +41012,8 @@ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ ** wrong. */ static int unixRead( - sqlite3_file *id, - void *pBuf, + sqlite3_file *id, + void *pBuf, int amt, sqlite3_int64 offset ){ @@ -34911,17 +41023,17 @@ static int unixRead( assert( offset>=0 ); assert( amt>0 ); - /* If this is a database file (not a journal, master-journal or temp + /* If this is a database file (not a journal, super-journal or temp ** file), the bytes in the locking range should never be read or written. */ #if 0 assert( pFile->pPreallocatedUnused==0 || offset>=PENDING_BYTE+512 - || offset+amt<=PENDING_BYTE + || offset+amt<=PENDING_BYTE ); #endif #if SQLITE_MAX_MMAP_SIZE>0 - /* Deal with as much of this read request as possible by transfering + /* Deal with as much of this read request as possible by transferring ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ @@ -34941,7 +41053,24 @@ static int unixRead( if( got==amt ){ return SQLITE_OK; }else if( got<0 ){ - /* lastErrno set by seekAndRead */ + /* pFile->lastErrno has been set by seekAndRead(). + ** Usually we return SQLITE_IOERR_READ here, though for some + ** kinds of errors we return SQLITE_IOERR_CORRUPTFS. The + ** SQLITE_IOERR_CORRUPTFS will be converted into SQLITE_CORRUPT + ** prior to returning to the application by the sqlite3ApiExit() + ** routine. + */ + switch( pFile->lastErrno ){ + case ERANGE: + case EIO: +#ifdef ENXIO + case ENXIO: +#endif +#ifdef EDEVERR + case EDEVERR: +#endif + return SQLITE_IOERR_CORRUPTFS; + } return SQLITE_IOERR_READ; }else{ storeLastErrno(pFile, 0); /* not a system error */ @@ -34954,7 +41083,7 @@ static int unixRead( /* ** Attempt to seek the file-descriptor passed as the first argument to ** absolute offset iOff, then attempt to write nBuf bytes of data from -** pBuf to it. If an error occurs, return -1 and set *piErrno. Otherwise, +** pBuf to it. If an error occurs, return -1 and set *piErrno. Otherwise, ** return the actual number of bytes written (which may be less than ** nBuf). */ @@ -35014,22 +41143,22 @@ static int seekAndWrite(unixFile *id, i64 offset, const void *pBuf, int cnt){ ** or some other error code on failure. */ static int unixWrite( - sqlite3_file *id, - const void *pBuf, + sqlite3_file *id, + const void *pBuf, int amt, - sqlite3_int64 offset + sqlite3_int64 offset ){ unixFile *pFile = (unixFile*)id; int wrote = 0; assert( id ); assert( amt>0 ); - /* If this is a database file (not a journal, master-journal or temp + /* If this is a database file (not a journal, super-journal or temp ** file), the bytes in the locking range should never be read or written. */ #if 0 assert( pFile->pPreallocatedUnused==0 || offset>=PENDING_BYTE+512 - || offset+amt<=PENDING_BYTE + || offset+amt<=PENDING_BYTE ); #endif @@ -35056,7 +41185,7 @@ static int unixWrite( #endif #if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0 - /* Deal with as much of this write request as possible by transfering + /* Deal with as much of this write request as possible by transferring ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ @@ -35071,7 +41200,7 @@ static int unixWrite( } } #endif - + while( (wrote = seekAndWrite(pFile, offset, pBuf, amt))0 ){ amt -= wrote; offset += wrote; @@ -35137,8 +41266,8 @@ SQLITE_API int sqlite3_fullsync_count = 0; ** ** SQLite sets the dataOnly flag if the size of the file is unchanged. ** The idea behind dataOnly is that it should only write the file content -** to disk, not the inode. We only set dataOnly if the file size is -** unchanged since the file size is part of the inode. However, +** to disk, not the inode. We only set dataOnly if the file size is +** unchanged since the file size is part of the inode. However, ** Ted Ts'o tells us that fdatasync() will also write the inode if the ** file size has changed. The only real difference between fdatasync() ** and fsync(), Ted tells us, is that fdatasync() will not flush the @@ -35152,7 +41281,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ int rc; /* The following "ifdef/elif/else/" block has the same structure as - ** the one below. It is replicated here solely to avoid cluttering + ** the one below. It is replicated here solely to avoid cluttering ** up the real code with the UNUSED_PARAMETER() macros. */ #ifdef SQLITE_NO_SYNC @@ -35166,7 +41295,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ UNUSED_PARAMETER(dataOnly); #endif - /* Record the number of times that we do a normal fsync() and + /* Record the number of times that we do a normal fsync() and ** FULLSYNC. This is used during testing to verify that this procedure ** gets called with the correct arguments. */ @@ -35178,7 +41307,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a ** no-op. But go ahead and call fstat() to validate the file ** descriptor as we need a method to provoke a failure during - ** coverate testing. + ** coverage testing. */ #ifdef SQLITE_NO_SYNC { @@ -35192,11 +41321,11 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ rc = 1; } /* If the FULLFSYNC failed, fall back to attempting an fsync(). - ** It shouldn't be possible for fullfsync to fail on the local + ** It shouldn't be possible for fullfsync to fail on the local ** file system (on OSX), so failure indicates that FULLFSYNC - ** isn't supported for this file system. So, attempt an fsync - ** and (for now) ignore the overhead of a superfluous fcntl call. - ** It'd be better to detect fullfsync support once and avoid + ** isn't supported for this file system. So, attempt an fsync + ** and (for now) ignore the overhead of a superfluous fcntl call. + ** It'd be better to detect fullfsync support once and avoid ** the fcntl call every time sync is called. */ if( rc ) rc = fsync(fd); @@ -35206,7 +41335,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ ** so currently we default to the macro that redefines fdatasync to fsync */ rc = fsync(fd); -#else +#else rc = fdatasync(fd); #if OS_VXWORKS if( rc==-1 && errno==ENOTSUP ){ @@ -35367,7 +41496,7 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){ #if SQLITE_MAX_MMAP_SIZE>0 /* If the file was just truncated to a size smaller than the currently ** mapped region, reduce the effective mapping size as well. SQLite will - ** use read() and write() to access data beyond this point from now on. + ** use read() and write() to access data beyond this point from now on. */ if( nBytemmapSize ){ pFile->mmapSize = nByte; @@ -35413,8 +41542,8 @@ static int unixFileSize(sqlite3_file *id, i64 *pSize){ static int proxyFileControl(sqlite3_file*,int,void*); #endif -/* -** This function is called to handle the SQLITE_FCNTL_SIZE_HINT +/* +** This function is called to handle the SQLITE_FCNTL_SIZE_HINT ** file-control operation. Enlarge the database to nBytes in size ** (rounded up to the next chunk-size). If the database is already ** nBytes or larger, this routine is a no-op. @@ -35423,7 +41552,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ if( pFile->szChunk>0 ){ i64 nSize; /* Required file size */ struct stat buf; /* Used to hold return values of fstat() */ - + if( osFstat(pFile->h, &buf) ){ return SQLITE_IOERR_FSTAT; } @@ -35432,8 +41561,8 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ if( nSize>(i64)buf.st_size ){ #if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE - /* The code below is handling the return value of osFallocate() - ** correctly. posix_fallocate() is defined to "returns zero on success, + /* The code below is handling the return value of osFallocate() + ** correctly. posix_fallocate() is defined to "returns zero on success, ** or an error number on failure". See the manpage for details. */ int err; do{ @@ -35441,7 +41570,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ }while( err==EINTR ); if( err && err!=EINVAL ) return SQLITE_IOERR_WRITE; #else - /* If the OS does not have posix_fallocate(), fake it. Write a + /* If the OS does not have posix_fallocate(), fake it. Write a ** single byte to the last byte in each block that falls entirely ** within the extended region. Then, if required, a single byte ** at offset (nSize-1), to set the size of the file correctly. @@ -35500,6 +41629,9 @@ static void unixModeBit(unixFile *pFile, unsigned char mask, int *pArg){ /* Forward declaration */ static int unixGetTempname(int nBuf, char *zBuf); +#ifndef SQLITE_OMIT_WAL + static int unixFcntlExternalReader(unixFile*, int*); +#endif /* ** Information and control of an open file handle. @@ -35567,7 +41699,9 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ } #ifdef SQLITE_ENABLE_SETLK_TIMEOUT case SQLITE_FCNTL_LOCK_TIMEOUT: { + int iOld = pFile->iBusyTimeout; pFile->iBusyTimeout = *(int*)pArg; + *(int*)pArg = iOld; return SQLITE_OK; } #endif @@ -35614,15 +41748,24 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ return proxyFileControl(id,op,pArg); } #endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */ + + case SQLITE_FCNTL_EXTERNAL_READER: { +#ifndef SQLITE_OMIT_WAL + return unixFcntlExternalReader((unixFile*)id, (int*)pArg); +#else + *(int*)pArg = 0; + return SQLITE_OK; +#endif + } } return SQLITE_NOTFOUND; } /* ** If pFd->sectorSize is non-zero when this function is called, it is a -** no-op. Otherwise, the values of pFd->sectorSize and -** pFd->deviceCharacteristics are set according to the file-system -** characteristics. +** no-op. Otherwise, the values of pFd->sectorSize and +** pFd->deviceCharacteristics are set according to the file-system +** characteristics. ** ** There are two versions of this function. One for QNX and one for all ** other systems. @@ -35656,7 +41799,7 @@ static void setDeviceCharacteristics(unixFile *pFd){ static void setDeviceCharacteristics(unixFile *pFile){ if( pFile->sectorSize == 0 ){ struct statvfs fsInfo; - + /* Set defaults for non-supported filesystems */ pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE; pFile->deviceCharacteristics = 0; @@ -35765,7 +41908,7 @@ static int unixDeviceCharacteristics(sqlite3_file *id){ /* ** Return the system page size. ** -** This function should not be called directly by other code in this file. +** This function should not be called directly by other code in this file. ** Instead, it should be called via macro osGetpagesize(). */ static int unixGetpagesize(void){ @@ -35783,7 +41926,7 @@ static int unixGetpagesize(void){ #ifndef SQLITE_OMIT_WAL /* -** Object used to represent an shared memory buffer. +** Object used to represent an shared memory buffer. ** ** When multiple threads all reference the same wal-index, each thread ** has its own unixShm object, but they all point to a single instance @@ -35803,19 +41946,19 @@ static int unixGetpagesize(void){ ** nRef ** ** The following fields are read-only after the object is created: -** -** fid +** +** hShm ** zFilename ** -** Either unixShmNode.mutex must be held or unixShmNode.nRef==0 and +** Either unixShmNode.pShmMutex must be held or unixShmNode.nRef==0 and ** unixMutexHeld() is true when reading or writing any other field ** in this structure. */ struct unixShmNode { unixInodeInfo *pInode; /* unixInodeInfo that owns this SHM node */ - sqlite3_mutex *mutex; /* Mutex to access this object */ + sqlite3_mutex *pShmMutex; /* Mutex to access this object */ char *zFilename; /* Name of the mmapped file */ - int h; /* Open file descriptor */ + int hShm; /* Open file descriptor */ int szRegion; /* Size of shared-memory regions */ u16 nRegion; /* Size of array apRegion */ u8 isReadonly; /* True if read-only */ @@ -35823,6 +41966,7 @@ struct unixShmNode { char **apRegion; /* Array of mapped shared-memory regions */ int nRef; /* Number of unixShm objects pointing to this */ unixShm *pFirst; /* All unixShm objects pointing to this */ + int aLock[SQLITE_SHM_NLOCK]; /* # shared locks on slot, -1==excl lock */ #ifdef SQLITE_DEBUG u8 exclMask; /* Mask of exclusive locks held */ u8 sharedMask; /* Mask of shared locks held */ @@ -35837,16 +41981,16 @@ struct unixShmNode { ** The following fields are initialized when this object is created and ** are read-only thereafter: ** -** unixShm.pFile +** unixShm.pShmNode ** unixShm.id ** -** All other fields are read/write. The unixShm.pFile->mutex must be held -** while accessing any read/write fields. +** All other fields are read/write. The unixShm.pShmNode->pShmMutex must +** be held while accessing any read/write fields. */ struct unixShm { unixShmNode *pShmNode; /* The underlying unixShmNode object */ unixShm *pNext; /* Next unixShm with the same unixShmNode */ - u8 hasMutex; /* True if holding the unixShmNode mutex */ + u8 hasMutex; /* True if holding the unixShmNode->pShmMutex */ u8 id; /* Id of this connection within its unixShmNode */ u16 sharedMask; /* Mask of shared locks held */ u16 exclMask; /* Mask of exclusive locks held */ @@ -35858,6 +42002,40 @@ struct unixShm { #define UNIX_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ #define UNIX_SHM_DMS (UNIX_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ +/* +** Use F_GETLK to check whether or not there are any readers with open +** wal-mode transactions in other processes on database file pFile. If +** no error occurs, return SQLITE_OK and set (*piOut) to 1 if there are +** such transactions, or 0 otherwise. If an error occurs, return an +** SQLite error code. The final value of *piOut is undefined in this +** case. +*/ +static int unixFcntlExternalReader(unixFile *pFile, int *piOut){ + int rc = SQLITE_OK; + *piOut = 0; + if( pFile->pShm){ + unixShmNode *pShmNode = pFile->pShm->pShmNode; + struct flock f; + + memset(&f, 0, sizeof(f)); + f.l_type = F_WRLCK; + f.l_whence = SEEK_SET; + f.l_start = UNIX_SHM_BASE + 3; + f.l_len = SQLITE_SHM_NLOCK - 3; + + sqlite3_mutex_enter(pShmNode->pShmMutex); + if( osFcntl(pShmNode->hShm, F_GETLK, &f)<0 ){ + rc = SQLITE_IOERR_LOCK; + }else{ + *piOut = (f.l_type!=F_UNLCK); + } + sqlite3_mutex_leave(pShmNode->pShmMutex); + } + + return rc; +} + + /* ** Apply posix advisory locks for all bytes from ofst through ofst+n-1. ** @@ -35876,7 +42054,8 @@ static int unixShmSystemLock( /* Access to the unixShmNode object is serialized by the caller */ pShmNode = pFile->pInode->pShmNode; - assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->mutex) ); + assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->pShmMutex) ); + assert( pShmNode->nRef>0 || unixMutexHeld() ); /* Shared locks never span more than one byte */ assert( n==1 || lockType!=F_RDLCK ); @@ -35884,14 +42063,21 @@ static int unixShmSystemLock( /* Locks are within range */ assert( n>=1 && n<=SQLITE_SHM_NLOCK ); - if( pShmNode->h>=0 ){ + if( pShmNode->hShm>=0 ){ + int res; /* Initialize the locking parameters */ f.l_type = lockType; f.l_whence = SEEK_SET; f.l_start = ofst; f.l_len = n; - rc = osSetPosixAdvisoryLock(pShmNode->h, &f, pFile); - rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY; + res = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile); + if( res==-1 ){ +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + rc = (pFile->iBusyTimeout ? SQLITE_BUSY_TIMEOUT : SQLITE_BUSY); +#else + rc = SQLITE_BUSY; +#endif + } } /* Update the global lock state and do debug tracing */ @@ -35929,7 +42115,7 @@ static int unixShmSystemLock( } #endif - return rc; + return rc; } /* @@ -35962,18 +42148,18 @@ static void unixShmPurge(unixFile *pFd){ int nShmPerMap = unixShmRegionPerMap(); int i; assert( p->pInode==pFd->pInode ); - sqlite3_mutex_free(p->mutex); + sqlite3_mutex_free(p->pShmMutex); for(i=0; inRegion; i+=nShmPerMap){ - if( p->h>=0 ){ + if( p->hShm>=0 ){ osMunmap(p->apRegion[i], p->szRegion); }else{ sqlite3_free(p->apRegion[i]); } } sqlite3_free(p->apRegion); - if( p->h>=0 ){ - robust_close(pFd, p->h, __LINE__); - p->h = -1; + if( p->hShm>=0 ){ + robust_close(pFd, p->hShm, __LINE__); + p->hShm = -1; } p->pInode->pShmNode = 0; sqlite3_free(p); @@ -35985,7 +42171,7 @@ static void unixShmPurge(unixFile *pFd){ ** take it now. Return SQLITE_OK if successful, or an SQLite error ** code otherwise. ** -** If the DMS cannot be locked because this is a readonly_shm=1 +** If the DMS cannot be locked because this is a readonly_shm=1 ** connection and no other process already holds a lock, return ** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1. */ @@ -35996,7 +42182,7 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){ /* Use F_GETLK to determine the locks other processes are holding ** on the DMS byte. If it indicates that another process is holding ** a SHARED lock, then this process may also take a SHARED lock - ** and proceed with opening the *-shm file. + ** and proceed with opening the *-shm file. ** ** Or, if no other process is holding any lock, then this process ** is the first to open it. In this case take an EXCLUSIVE lock on the @@ -36015,7 +42201,7 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){ lock.l_start = UNIX_SHM_DMS; lock.l_len = 1; lock.l_type = F_WRLCK; - if( osFcntl(pShmNode->h, F_GETLK, &lock)!=0 ) { + if( osFcntl(pShmNode->hShm, F_GETLK, &lock)!=0 ) { rc = SQLITE_IOERR_LOCK; }else if( lock.l_type==F_UNLCK ){ if( pShmNode->isReadonly ){ @@ -36023,7 +42209,12 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){ rc = SQLITE_READONLY_CANTINIT; }else{ rc = unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1); - if( rc==SQLITE_OK && robust_ftruncate(pShmNode->h, 0) ){ + /* The first connection to attach must truncate the -shm file. We + ** truncate to 3 bytes (an arbitrary small number, less than the + ** -shm header size) rather than 0 as a system debugging aid, to + ** help detect if a -shm file truncation is legitimate or is the work + ** or a rogue process. */ + if( rc==SQLITE_OK && robust_ftruncate(pShmNode->hShm, 3) ){ rc = unixLogError(SQLITE_IOERR_SHMOPEN,"ftruncate",pShmNode->zFilename); } } @@ -36039,20 +42230,20 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){ } /* -** Open a shared-memory area associated with open database file pDbFd. +** Open a shared-memory area associated with open database file pDbFd. ** This particular implementation uses mmapped files. ** ** The file used to implement shared-memory is in the same directory ** as the open database file and has the same name as the open database ** file with the "-shm" suffix added. For example, if the database file ** is "/home/user1/config.db" then the file that is created and mmapped -** for shared memory will be called "/home/user1/config.db-shm". +** for shared memory will be called "/home/user1/config.db-shm". ** ** Another approach to is to use files in /dev/shm or /dev/tmp or an ** some other tmpfs mount. But if a file in a different directory ** from the database file is used, then differing access permissions ** or a chroot() might cause two different processes on the same -** database to end up using different files for shared memory - +** database to end up using different files for shared memory - ** meaning that their memory would not really be shared - resulting ** in database corruption. Nevertheless, this tmpfs file usage ** can be enabled at compile-time using -DSQLITE_SHM_DIRECTORY="/dev/shm" @@ -36090,6 +42281,7 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ /* Check to see if a unixShmNode object already exists. Reuse an existing ** one if present. Create a new one if necessary. */ + assert( unixFileMutexNotheld(pDbFd) ); unixEnterMutex(); pInode = pDbFd->pInode; pShmNode = pInode->pShmNode; @@ -36121,19 +42313,19 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename); zShm = pShmNode->zFilename = (char*)&pShmNode[1]; #ifdef SQLITE_SHM_DIRECTORY - sqlite3_snprintf(nShmFilename, zShm, + sqlite3_snprintf(nShmFilename, zShm, SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x", (u32)sStat.st_ino, (u32)sStat.st_dev); #else sqlite3_snprintf(nShmFilename, zShm, "%s-shm", zBasePath); sqlite3FileSuffix3(pDbFd->zPath, zShm); #endif - pShmNode->h = -1; + pShmNode->hShm = -1; pDbFd->pInode->pShmNode = pShmNode; pShmNode->pInode = pDbFd->pInode; if( sqlite3GlobalConfig.bCoreMutex ){ - pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ + pShmNode->pShmMutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); + if( pShmNode->pShmMutex==0 ){ rc = SQLITE_NOMEM_BKPT; goto shm_open_err; } @@ -36141,11 +42333,13 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ if( pInode->bProcessLock==0 ){ if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){ - pShmNode->h = robust_open(zShm, O_RDWR|O_CREAT, (sStat.st_mode&0777)); + pShmNode->hShm = robust_open(zShm, O_RDWR|O_CREAT|O_NOFOLLOW, + (sStat.st_mode&0777)); } - if( pShmNode->h<0 ){ - pShmNode->h = robust_open(zShm, O_RDONLY, (sStat.st_mode&0777)); - if( pShmNode->h<0 ){ + if( pShmNode->hShm<0 ){ + pShmNode->hShm = robust_open(zShm, O_RDONLY|O_NOFOLLOW, + (sStat.st_mode&0777)); + if( pShmNode->hShm<0 ){ rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShm); goto shm_open_err; } @@ -36156,7 +42350,7 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ ** is owned by the same user that owns the original database. Otherwise, ** the original owner will not be able to connect. */ - robustFchown(pShmNode->h, sStat.st_uid, sStat.st_gid); + robustFchown(pShmNode->hShm, sStat.st_uid, sStat.st_gid); rc = unixLockSharedMemory(pDbFd, pShmNode); if( rc!=SQLITE_OK && rc!=SQLITE_READONLY_CANTINIT ) goto shm_open_err; @@ -36176,13 +42370,13 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ ** the cover of the unixEnterMutex() mutex and the pointer from the ** new (struct unixShm) object to the pShmNode has been set. All that is ** left to do is to link the new object into the linked list starting - ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex - ** mutex. + ** at pShmNode->pFirst. This must be done while holding the + ** pShmNode->pShmMutex. */ - sqlite3_mutex_enter(pShmNode->mutex); + sqlite3_mutex_enter(pShmNode->pShmMutex); p->pNext = pShmNode->pFirst; pShmNode->pFirst = p; - sqlite3_mutex_leave(pShmNode->mutex); + sqlite3_mutex_leave(pShmNode->pShmMutex); return rc; /* Jump here on any error */ @@ -36194,22 +42388,22 @@ shm_open_err: } /* -** This function is called to obtain a pointer to region iRegion of the -** shared-memory associated with the database file fd. Shared-memory regions -** are numbered starting from zero. Each shared-memory region is szRegion +** This function is called to obtain a pointer to region iRegion of the +** shared-memory associated with the database file fd. Shared-memory regions +** are numbered starting from zero. Each shared-memory region is szRegion ** bytes in size. ** ** If an error occurs, an error code is returned and *pp is set to NULL. ** ** Otherwise, if the bExtend parameter is 0 and the requested shared-memory ** region has not been allocated (by any client, including one running in a -** separate process), then *pp is set to NULL and SQLITE_OK returned. If -** bExtend is non-zero and the requested shared-memory region has not yet +** separate process), then *pp is set to NULL and SQLITE_OK returned. If +** bExtend is non-zero and the requested shared-memory region has not yet ** been allocated, it is allocated by this function. ** ** If the shared-memory region has already been allocated or is allocated by -** this call as described above, then it is mapped into this processes -** address space (if it is not already), *pp is set to point to the mapped +** this call as described above, then it is mapped into this processes +** address space (if it is not already), *pp is set to point to the mapped ** memory and SQLITE_OK returned. */ static int unixShmMap( @@ -36234,7 +42428,7 @@ static int unixShmMap( p = pDbFd->pShm; pShmNode = p->pShmNode; - sqlite3_mutex_enter(pShmNode->mutex); + sqlite3_mutex_enter(pShmNode->pShmMutex); if( pShmNode->isUnlocked ){ rc = unixLockSharedMemory(pDbFd, pShmNode); if( rc!=SQLITE_OK ) goto shmpage_out; @@ -36242,8 +42436,8 @@ static int unixShmMap( } assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); assert( pShmNode->pInode==pDbFd->pInode ); - assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); - assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); + assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 ); + assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 ); /* Minimum number of regions required to be mapped. */ nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap; @@ -36255,16 +42449,16 @@ static int unixShmMap( pShmNode->szRegion = szRegion; - if( pShmNode->h>=0 ){ + if( pShmNode->hShm>=0 ){ /* The requested region is not mapped into this processes address space. ** Check to see if it has been allocated (i.e. if the wal-index file is ** large enough to contain the requested region). */ - if( osFstat(pShmNode->h, &sStat) ){ + if( osFstat(pShmNode->hShm, &sStat) ){ rc = SQLITE_IOERR_SHMSIZE; goto shmpage_out; } - + if( sStat.st_sizeh, iPg*pgsz + pgsz-1, "", 1, &x)!=1 ){ + if( seekAndWriteFd(pShmNode->hShm, iPg*pgsz + pgsz-1,"",1,&x)!=1 ){ const char *zFile = pShmNode->zFilename; rc = unixLogError(SQLITE_IOERR_SHMSIZE, "write", zFile); goto shmpage_out; @@ -36311,22 +42505,22 @@ static int unixShmMap( int nMap = szRegion*nShmPerMap; int i; void *pMem; - if( pShmNode->h>=0 ){ + if( pShmNode->hShm>=0 ){ pMem = osMmap(0, nMap, - pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, - MAP_SHARED, pShmNode->h, szRegion*(i64)pShmNode->nRegion + pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, + MAP_SHARED, pShmNode->hShm, szRegion*(i64)pShmNode->nRegion ); if( pMem==MAP_FAILED ){ rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename); goto shmpage_out; } }else{ - pMem = sqlite3_malloc64(szRegion); + pMem = sqlite3_malloc64(nMap); if( pMem==0 ){ rc = SQLITE_NOMEM_BKPT; goto shmpage_out; } - memset(pMem, 0, szRegion); + memset(pMem, 0, nMap); } for(i=0; iisReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY; - sqlite3_mutex_leave(pShmNode->mutex); + sqlite3_mutex_leave(pShmNode->pShmMutex); return rc; } +/* +** Check that the pShmNode->aLock[] array comports with the locking bitmasks +** held by each client. Return true if it does, or false otherwise. This +** is to be used in an assert(). e.g. +** +** assert( assertLockingArrayOk(pShmNode) ); +*/ +#ifdef SQLITE_DEBUG +static int assertLockingArrayOk(unixShmNode *pShmNode){ + unixShm *pX; + int aLock[SQLITE_SHM_NLOCK]; + assert( sqlite3_mutex_held(pShmNode->pShmMutex) ); + + memset(aLock, 0, sizeof(aLock)); + for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ + int i; + for(i=0; iexclMask & (1<sharedMask & (1<=0 ); + aLock[i]++; + } + } + } + + assert( 0==memcmp(pShmNode->aLock, aLock, sizeof(aLock)) ); + return (memcmp(pShmNode->aLock, aLock, sizeof(aLock))==0); +} +#endif + /* ** Change the lock state for a shared-memory segment. ** @@ -36362,11 +42588,17 @@ static int unixShmLock( int flags /* What to do with the lock */ ){ unixFile *pDbFd = (unixFile*)fd; /* Connection holding shared memory */ - unixShm *p = pDbFd->pShm; /* The shared memory being locked */ - unixShm *pX; /* For looping over all siblings */ - unixShmNode *pShmNode = p->pShmNode; /* The underlying file iNode */ + unixShm *p; /* The shared memory being locked */ + unixShmNode *pShmNode; /* The underlying file iNode */ int rc = SQLITE_OK; /* Result code */ u16 mask; /* Mask of locks to take or release */ + int *aLock; + + p = pDbFd->pShm; + if( p==0 ) return SQLITE_IOERR_SHMLOCK; + pShmNode = p->pShmNode; + if( NEVER(pShmNode==0) ) return SQLITE_IOERR_SHMLOCK; + aLock = pShmNode->aLock; assert( pShmNode==pDbFd->pInode->pShmNode ); assert( pShmNode->pInode==pDbFd->pInode ); @@ -36377,92 +42609,112 @@ static int unixShmLock( || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); - assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); - assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); + assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 ); + assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 ); + + /* Check that, if this to be a blocking lock, no locks that occur later + ** in the following list than the lock being obtained are already held: + ** + ** 1. Checkpointer lock (ofst==1). + ** 2. Write lock (ofst==0). + ** 3. Read locks (ofst>=3 && ofstiBusyTimeout==0 || ( + (ofst!=2) /* not RECOVER */ + && (ofst!=1 || (p->exclMask|p->sharedMask)==0) + && (ofst!=0 || (p->exclMask|p->sharedMask)<3) + && (ofst<3 || (p->exclMask|p->sharedMask)<(1<1 || mask==(1<mutex); + sqlite3_mutex_enter(pShmNode->pShmMutex); + assert( assertLockingArrayOk(pShmNode) ); if( flags & SQLITE_SHM_UNLOCK ){ - u16 allMask = 0; /* Mask of locks held by siblings */ + if( (p->exclMask|p->sharedMask) & mask ){ + int ii; + int bUnlock = 1; - /* See if any siblings hold this same lock */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( pX==p ) continue; - assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); - allMask |= pX->sharedMask; + for(ii=ofst; ii((p->sharedMask & (1<sharedMask & (1<1 ); + aLock[ofst]--; + } + + /* Undo the local locks */ + if( rc==SQLITE_OK ){ + p->exclMask &= ~mask; + p->sharedMask &= ~mask; + } } - - /* Unlock the system-level locks */ - if( (mask & allMask)==0 ){ - rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - - /* Undo the local locks */ - if( rc==SQLITE_OK ){ - p->exclMask &= ~mask; - p->sharedMask &= ~mask; - } }else if( flags & SQLITE_SHM_SHARED ){ - u16 allShared = 0; /* Union of locks held by connections other than "p" */ - - /* Find out which shared locks are already held by sibling connections. - ** If any sibling already holds an exclusive lock, go ahead and return - ** SQLITE_BUSY. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 ){ + assert( n==1 ); + assert( (p->exclMask & (1<sharedMask & mask)==0 ){ + if( aLock[ofst]<0 ){ rc = SQLITE_BUSY; - break; - } - allShared |= pX->sharedMask; - } - - /* Get shared locks at the system level, if necessary */ - if( rc==SQLITE_OK ){ - if( (allShared & mask)==0 ){ + }else if( aLock[ofst]==0 ){ rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n); - }else{ - rc = SQLITE_OK; } - } - /* Get the local shared locks */ - if( rc==SQLITE_OK ){ - p->sharedMask |= mask; + /* Get the local shared locks */ + if( rc==SQLITE_OK ){ + p->sharedMask |= mask; + aLock[ofst]++; + } } }else{ /* Make sure no sibling connections hold locks that will block this - ** lock. If any do, return SQLITE_BUSY right away. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){ + ** lock. If any do, return SQLITE_BUSY right away. */ + int ii; + for(ii=ofst; iisharedMask & mask)==0 ); + if( ALWAYS((p->exclMask & (1<sharedMask & mask)==0 ); p->exclMask |= mask; + for(ii=ofst; iimutex); + assert( assertLockingArrayOk(pShmNode) ); + sqlite3_mutex_leave(pShmNode->pShmMutex); OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n", p->id, osGetpid(0), p->sharedMask, p->exclMask)); return rc; } /* -** Implement a memory barrier or memory fence on shared memory. +** Implement a memory barrier or memory fence on shared memory. ** ** All loads and stores begun before the barrier must complete before ** any load or store begun after the barrier. @@ -36472,12 +42724,15 @@ static void unixShmBarrier( ){ UNUSED_PARAMETER(fd); sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ + assert( fd->pMethods->xLock==nolockLock + || unixFileMutexNotheld((unixFile*)fd) + ); unixEnterMutex(); /* Also mutex, for redundancy */ unixLeaveMutex(); } /* -** Close a connection to shared-memory. Delete the underlying +** Close a connection to shared-memory. Delete the underlying ** storage if deleteFlag is true. ** ** If there is no shared memory associated with the connection then this @@ -36502,22 +42757,23 @@ static int unixShmUnmap( /* Remove connection p from the set of connections associated ** with pShmNode */ - sqlite3_mutex_enter(pShmNode->mutex); + sqlite3_mutex_enter(pShmNode->pShmMutex); for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){} *pp = p->pNext; /* Free the connection p */ sqlite3_free(p); pDbFd->pShm = 0; - sqlite3_mutex_leave(pShmNode->mutex); + sqlite3_mutex_leave(pShmNode->pShmMutex); /* If pShmNode->nRef has reached 0, then close the underlying ** shared-memory file, too */ + assert( unixFileMutexNotheld(pDbFd) ); unixEnterMutex(); assert( pShmNode->nRef>0 ); pShmNode->nRef--; if( pShmNode->nRef==0 ){ - if( deleteFlag && pShmNode->h>=0 ){ + if( deleteFlag && pShmNode->hShm>=0 ){ osUnlink(pShmNode->zFilename); } unixShmPurge(pDbFd); @@ -36550,7 +42806,7 @@ static void unixUnmapfile(unixFile *pFd){ } /* -** Attempt to set the size of the memory mapping maintained by file +** Attempt to set the size of the memory mapping maintained by file ** descriptor pFd to nNew bytes. Any existing mapping is discarded. ** ** If successful, this function sets the following variables: @@ -36642,14 +42898,14 @@ static void unixRemapfile( /* ** Memory map or remap the file opened by file-descriptor pFd (if the file -** is already mapped, the existing mapping is replaced by the new). Or, if -** there already exists a mapping for this file, and there are still +** is already mapped, the existing mapping is replaced by the new). Or, if +** there already exists a mapping for this file, and there are still ** outstanding xFetch() references to it, this function is a no-op. ** -** If parameter nByte is non-negative, then it is the requested size of -** the mapping to create. Otherwise, if nByte is less than zero, then the +** If parameter nByte is non-negative, then it is the requested size of +** the mapping to create. Otherwise, if nByte is less than zero, then the ** requested size is the size of the file on disk. The actual size of the -** created mapping is either the requested size or the value configured +** created mapping is either the requested size or the value configured ** using SQLITE_FCNTL_MMAP_LIMIT, whichever is smaller. ** ** SQLITE_OK is returned if no error occurs (even if the mapping is not @@ -36690,7 +42946,7 @@ static int unixMapfile(unixFile *pFd, i64 nMap){ ** Finally, if an error does occur, return an SQLite error code. The final ** value of *pp is undefined in this case. ** -** If this function does return a pointer, the caller must eventually +** If this function does return a pointer, the caller must eventually ** release the reference by calling unixUnfetch(). */ static int unixFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ @@ -36715,13 +42971,13 @@ static int unixFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ } /* -** If the third argument is non-NULL, then this function releases a +** If the third argument is non-NULL, then this function releases a ** reference obtained by an earlier call to unixFetch(). The second ** argument passed to this function must be the same as the corresponding -** argument that was passed to the unixFetch() invocation. +** argument that was passed to the unixFetch() invocation. ** -** Or, if the third argument is NULL, then this function is being called -** to inform the VFS layer that, according to POSIX, any existing mapping +** Or, if the third argument is NULL, then this function is being called +** to inform the VFS layer that, according to POSIX, any existing mapping ** may now be invalid and should be unmapped. */ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){ @@ -36729,7 +42985,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){ unixFile *pFd = (unixFile *)fd; /* The underlying database file */ UNUSED_PARAMETER(iOff); - /* If p==0 (unmap the entire file) then there must be no outstanding + /* If p==0 (unmap the entire file) then there must be no outstanding ** xFetch references. Or, if p!=0 (meaning it is an xFetch reference), ** then there must be at least one outstanding. */ assert( (p==0)==(pFd->nFetchOut==0) ); @@ -36839,7 +43095,7 @@ IOMETHODS( IOMETHODS( nolockIoFinder, /* Finder function name */ nolockIoMethods, /* sqlite3_io_methods object name */ - 3, /* shared memory is disabled */ + 3, /* shared memory and mmap are enabled */ nolockClose, /* xClose method */ nolockLock, /* xLock method */ nolockUnlock, /* xUnlock method */ @@ -36937,8 +43193,8 @@ IOMETHODS( #endif #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -/* -** This "finder" function attempts to determine the best locking strategy +/* +** This "finder" function attempts to determine the best locking strategy ** for the database file "filePath". It then returns the sqlite3_io_methods ** object that implements that strategy. ** @@ -36980,8 +43236,8 @@ static const sqlite3_io_methods *autolockIoFinderImpl( } /* Default case. Handles, amongst others, "nfs". - ** Test byte-range lock using fcntl(). If the call succeeds, - ** assume that the file-system supports POSIX style locks. + ** Test byte-range lock using fcntl(). If the call succeeds, + ** assume that the file-system supports POSIX style locks. */ lockInfo.l_len = 1; lockInfo.l_start = 0; @@ -36997,7 +43253,7 @@ static const sqlite3_io_methods *autolockIoFinderImpl( return &dotlockIoMethods; } } -static const sqlite3_io_methods +static const sqlite3_io_methods *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl; #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ @@ -37033,7 +43289,7 @@ static const sqlite3_io_methods *vxworksIoFinderImpl( return &semIoMethods; } } -static const sqlite3_io_methods +static const sqlite3_io_methods *(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl; #endif /* OS_VXWORKS */ @@ -37161,14 +43417,14 @@ static int fillInUnixFile( robust_close(pNew, h, __LINE__); h = -1; } - unixLeaveMutex(); + unixLeaveMutex(); } } #endif else if( pLockingStyle == &dotlockIoMethods ){ /* Dotfile locking uses the file path so it needs to be included in - ** the dotlockLockingContext + ** the dotlockLockingContext */ char *zLockFile; int nFilename; @@ -37206,7 +43462,7 @@ static int fillInUnixFile( unixLeaveMutex(); } #endif - + storeLastErrno(pNew, 0); #if OS_VXWORKS if( rc!=SQLITE_OK ){ @@ -37219,32 +43475,42 @@ static int fillInUnixFile( if( rc!=SQLITE_OK ){ if( h>=0 ) robust_close(pNew, h, __LINE__); }else{ - pNew->pMethod = pLockingStyle; + pId->pMethods = pLockingStyle; OpenCounter(+1); verifyDbFile(pNew); } return rc; } +/* +** Directories to consider for temp files. +*/ +static const char *azTempDirs[] = { + 0, + 0, + "/var/tmp", + "/usr/tmp", + "/tmp", + "." +}; + +/* +** Initialize first two members of azTempDirs[] array. +*/ +static void unixTempFileInit(void){ + azTempDirs[0] = getenv("SQLITE_TMPDIR"); + azTempDirs[1] = getenv("TMPDIR"); +} + /* ** Return the name of a directory in which to put temporary files. ** If no suitable temporary file directory can be found, return NULL. */ static const char *unixTempFileDir(void){ - static const char *azDirs[] = { - 0, - 0, - "/var/tmp", - "/usr/tmp", - "/tmp", - "." - }; unsigned int i = 0; struct stat buf; const char *zDir = sqlite3_temp_directory; - if( !azDirs[0] ) azDirs[0] = getenv("SQLITE_TMPDIR"); - if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR"); while(1){ if( zDir!=0 && osStat(zDir, &buf)==0 @@ -37253,8 +43519,8 @@ static const char *unixTempFileDir(void){ ){ return zDir; } - if( i>=sizeof(azDirs)/sizeof(azDirs[0]) ) break; - zDir = azDirs[i++]; + if( i>=sizeof(azTempDirs)/sizeof(azTempDirs[0]) ) break; + zDir = azTempDirs[i++]; } return 0; } @@ -37267,26 +43533,35 @@ static const char *unixTempFileDir(void){ static int unixGetTempname(int nBuf, char *zBuf){ const char *zDir; int iLimit = 0; + int rc = SQLITE_OK; /* It's odd to simulate an io-error here, but really this is just ** using the io-error infrastructure to test that SQLite handles this - ** function failing. + ** function failing. */ zBuf[0] = 0; SimulateIOError( return SQLITE_IOERR ); + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); zDir = unixTempFileDir(); - if( zDir==0 ) return SQLITE_IOERR_GETTEMPPATH; - do{ - u64 r; - sqlite3_randomness(sizeof(r), &r); - assert( nBuf>2 ); - zBuf[nBuf-2] = 0; - sqlite3_snprintf(nBuf, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX"%llx%c", - zDir, r, 0); - if( zBuf[nBuf-2]!=0 || (iLimit++)>10 ) return SQLITE_ERROR; - }while( osAccess(zBuf,0)==0 ); - return SQLITE_OK; + if( zDir==0 ){ + rc = SQLITE_IOERR_GETTEMPPATH; + }else{ + do{ + u64 r; + sqlite3_randomness(sizeof(r), &r); + assert( nBuf>2 ); + zBuf[nBuf-2] = 0; + sqlite3_snprintf(nBuf, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX"%llx%c", + zDir, r, 0); + if( zBuf[nBuf-2]!=0 || (iLimit++)>10 ){ + rc = SQLITE_ERROR; + break; + } + }while( osAccess(zBuf,0)==0 ); + } + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); + return rc; } #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) @@ -37299,8 +43574,8 @@ static int proxyTransformUnixFile(unixFile*, const char*); #endif /* -** Search for an unused file descriptor that was opened on the database -** file (not a journal or master-journal file) identified by pathname +** Search for an unused file descriptor that was opened on the database +** file (not a journal or super-journal file) identified by pathname ** zPath with SQLITE_OPEN_XXX flags matching those passed as the second ** argument to this function. ** @@ -37308,7 +43583,7 @@ static int proxyTransformUnixFile(unixFile*, const char*); ** but the associated file descriptor could not be closed because some ** other file descriptor open on the same file is holding a file-lock. ** Refer to comments in the unixClose() function and the lengthy comment -** describing "Posix Advisory Locking" at the start of this file for +** describing "Posix Advisory Locking" at the start of this file for ** further details. Also, ticket #4018. ** ** If a suitable file descriptor is found, then it is returned. If no @@ -37319,8 +43594,8 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ /* Do not search for an unused file descriptor on vxworks. Not because ** vxworks would not benefit from the change (it might, we're not sure), - ** but because no way to test it is currently available. It is better - ** not to risk breaking vxworks support for the sake of such an obscure + ** but because no way to test it is currently available. It is better + ** not to risk breaking vxworks support for the sake of such an obscure ** feature. */ #if !OS_VXWORKS struct stat sStat; /* Results of stat() call */ @@ -37335,7 +43610,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ ** ** Even if a subsequent open() call does succeed, the consequences of ** not searching for a reusable file descriptor are not dire. */ - if( nUnusedFd>0 && 0==osStat(zPath, &sStat) ){ + if( inodeList!=0 && 0==osStat(zPath, &sStat) ){ unixInodeInfo *pInode; pInode = inodeList; @@ -37345,12 +43620,15 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ } if( pInode ){ UnixUnusedFd **pp; + assert( sqlite3_mutex_notheld(pInode->pLockMutex) ); + sqlite3_mutex_enter(pInode->pLockMutex); + flags &= (SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE); for(pp=&pInode->pUnused; *pp && (*pp)->flags!=flags; pp=&((*pp)->pNext)); pUnused = *pp; if( pUnused ){ - nUnusedFd--; *pp = pUnused->pNext; } + sqlite3_mutex_leave(pInode->pLockMutex); } } unixLeaveMutex(); @@ -37359,7 +43637,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ } /* -** Find the mode, uid and gid of file zFile. +** Find the mode, uid and gid of file zFile. */ static int getFileMode( const char *zFile, /* File name */ @@ -37383,22 +43661,22 @@ static int getFileMode( ** This function is called by unixOpen() to determine the unix permissions ** to create new files with. If no error occurs, then SQLITE_OK is returned ** and a value suitable for passing as the third argument to open(2) is -** written to *pMode. If an IO error occurs, an SQLite error code is +** written to *pMode. If an IO error occurs, an SQLite error code is ** returned and the value of *pMode is not modified. ** ** In most cases, this routine sets *pMode to 0, which will become ** an indication to robust_open() to create the file using ** SQLITE_DEFAULT_FILE_PERMISSIONS adjusted by the umask. -** But if the file being opened is a WAL or regular journal file, then -** this function queries the file-system for the permissions on the -** corresponding database file and sets *pMode to this value. Whenever -** possible, WAL and journal files are created using the same permissions +** But if the file being opened is a WAL or regular journal file, then +** this function queries the file-system for the permissions on the +** corresponding database file and sets *pMode to this value. Whenever +** possible, WAL and journal files are created using the same permissions ** as the associated database file. ** ** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the ** original filename is unavailable. But 8_3_NAMES is only used for ** FAT filesystems and permissions do not matter there, so just use -** the default permissions. +** the default permissions. In 8_3_NAMES mode, leave *pMode set to zero. */ static int findCreateFileMode( const char *zPath, /* Path of file (possibly) being created */ @@ -37424,22 +43702,25 @@ static int findCreateFileMode( ** "-journalNN" ** "-walNN" ** - ** where NN is a decimal number. The NN naming schemes are + ** where NN is a decimal number. The NN naming schemes are ** used by the test_multiplex.c module. + ** + ** In normal operation, the journal file name will always contain + ** a '-' character. However in 8+3 filename mode, or if a corrupt + ** rollback journal specifies a super-journal with a goofy name, then + ** the '-' might be missing or the '-' might be the first character in + ** the filename. In that case, just return SQLITE_OK with *pMode==0. */ - nDb = sqlite3Strlen30(zPath) - 1; - while( zPath[nDb]!='-' ){ - /* In normal operation, the journal file name will always contain - ** a '-' character. However in 8+3 filename mode, or if a corrupt - ** rollback journal specifies a master journal with a goofy name, then - ** the '-' might be missing. */ - if( nDb==0 || zPath[nDb]=='.' ) return SQLITE_OK; + nDb = sqlite3Strlen30(zPath) - 1; + while( nDb>0 && zPath[nDb]!='.' ){ + if( zPath[nDb]=='-' ){ + memcpy(zDb, zPath, nDb); + zDb[nDb] = '\0'; + rc = getFileMode(zDb, pMode, pUid, pGid); + break; + } nDb--; } - memcpy(zDb, zPath, nDb); - zDb[nDb] = '\0'; - - rc = getFileMode(zDb, pMode, pUid, pGid); }else if( flags & SQLITE_OPEN_DELETEONCLOSE ){ *pMode = 0600; }else if( flags & SQLITE_OPEN_URI ){ @@ -37457,7 +43738,7 @@ static int findCreateFileMode( /* ** Open the file zPath. -** +** ** Previously, the SQLite OS layer used three functions in place of this ** one: ** @@ -37468,13 +43749,13 @@ static int findCreateFileMode( ** These calls correspond to the following combinations of flags: ** ** ReadWrite() -> (READWRITE | CREATE) -** ReadOnly() -> (READONLY) +** ReadOnly() -> (READONLY) ** OpenExclusive() -> (READWRITE | CREATE | EXCLUSIVE) ** ** The old OpenExclusive() accepted a boolean argument - "delFlag". If ** true, the file was configured to be automatically deleted when the -** file handle closed. To achieve the same effect using this new -** interface, add the DELETEONCLOSE flag to those specified above for +** file handle closed. To achieve the same effect using this new +** interface, add the DELETEONCLOSE flag to those specified above for ** OpenExclusive(). */ static int unixOpen( @@ -37487,7 +43768,7 @@ static int unixOpen( unixFile *p = (unixFile *)pFile; int fd = -1; /* File descriptor returned by open() */ int openFlags = 0; /* Flags to pass to open() */ - int eType = flags&0xFFFFFF00; /* Type of file to open */ + int eType = flags&0x0FFF00; /* Type of file to open */ int noLock; /* True to omit locking primitives */ int rc = SQLITE_OK; /* Function Return Code */ int ctrlFlags = 0; /* UNIXFILE_* flags */ @@ -37504,13 +43785,13 @@ static int unixOpen( struct statfs fsInfo; #endif - /* If creating a master or main-file journal, this function will open + /* If creating a super- or main-file journal, this function will open ** a file-descriptor on the directory too. The first time unixSync() ** is called the directory file descriptor will be fsync()ed and close()d. */ int isNewJrnl = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_MAIN_JOURNAL + eType==SQLITE_OPEN_SUPER_JOURNAL + || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_WAL )); @@ -37520,9 +43801,9 @@ static int unixOpen( char zTmpname[MAX_PATHNAME+2]; const char *zName = zPath; - /* Check the following statements are true: + /* Check the following statements are true: ** - ** (a) Exactly one of the READWRITE and READONLY flags must be set, and + ** (a) Exactly one of the READWRITE and READONLY flags must be set, and ** (b) if CREATE is set, then READWRITE must also be set, and ** (c) if EXCLUSIVE is set, then CREATE must also be set. ** (d) if DELETEONCLOSE is set, then CREATE must also be set. @@ -37532,17 +43813,17 @@ static int unixOpen( assert(isExclusive==0 || isCreate); assert(isDelete==0 || isCreate); - /* The main DB, main journal, WAL file and master journal are never + /* The main DB, main journal, WAL file and super-journal are never ** automatically deleted. Nor are they ever temporary files. */ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); + assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL ); assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); /* Assert that the upper layer has set one of the "file-type" flags. */ - assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB - || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL + assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB + || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL + || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL ); @@ -37557,6 +43838,11 @@ static int unixOpen( } memset(p, 0, sizeof(unixFile)); +#ifdef SQLITE_ASSERT_NO_FILES + /* Applications that never read or write a persistent disk files */ + assert( zName==0 ); +#endif + if( eType==SQLITE_OPEN_MAIN_DB ){ UnixUnusedFd *pUnused; pUnused = findReusableFd(zName, flags); @@ -37591,13 +43877,13 @@ static int unixOpen( /* Determine the value of the flags parameter passed to POSIX function ** open(). These must be calculated even if open() is not called, as - ** they may be stored as part of the file handle and used by the + ** they may be stored as part of the file handle and used by the ** 'conch file' locking functions later on. */ if( isReadonly ) openFlags |= O_RDONLY; if( isReadWrite ) openFlags |= O_RDWR; if( isCreate ) openFlags |= O_CREAT; if( isExclusive ) openFlags |= (O_EXCL|O_NOFOLLOW); - openFlags |= (O_LARGEFILE|O_BINARY); + openFlags |= (O_LARGEFILE|O_BINARY|O_NOFOLLOW); if( fd<0 ){ mode_t openMode; /* Permissions to create file with */ @@ -37633,11 +43919,19 @@ static int unixOpen( goto open_finished; } - /* If this process is running as root and if creating a new rollback - ** journal or WAL file, set the ownership of the journal or WAL to be - ** the same as the original database. + /* The owner of the rollback journal or WAL file should always be the + ** same as the owner of the database file. Try to ensure that this is + ** the case. The chown() system call will be a no-op if the current + ** process lacks root privileges, be we should at least try. Without + ** this step, if a root process opens a database file, it can leave + ** behinds a journal/WAL that is owned by root and hence make the + ** database inaccessible to unprivileged processes. + ** + ** If openMode==0, then that means uid and gid are not set correctly + ** (probably because SQLite is configured to use 8+3 filename mode) and + ** in that case we do not want to attempt the chown(). */ - if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){ + if( openMode && (flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL))!=0 ){ robustFchown(fd, uid, gid); } } @@ -37648,7 +43942,8 @@ static int unixOpen( if( p->pPreallocatedUnused ){ p->pPreallocatedUnused->fd = fd; - p->pPreallocatedUnused->flags = flags; + p->pPreallocatedUnused->flags = + flags & (SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE); } if( isDelete ){ @@ -37669,7 +43964,7 @@ static int unixOpen( p->openFlags = openFlags; } #endif - + #if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE if( fstatfs(fd, &fsInfo) == -1 ){ storeLastErrno(p, errno); @@ -37700,7 +43995,7 @@ static int unixOpen( char *envforce = getenv("SQLITE_FORCE_PROXY_LOCKING"); int useProxy = 0; - /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means + /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means ** never use proxy, NULL means use proxy for non-local files only. */ if( envforce!=NULL ){ useProxy = atoi(envforce)>0; @@ -37712,9 +44007,9 @@ static int unixOpen( if( rc==SQLITE_OK ){ rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:"); if( rc!=SQLITE_OK ){ - /* Use unixClose to clean up the resources added in fillInUnixFile - ** and clear all the structure's references. Specifically, - ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op + /* Use unixClose to clean up the resources added in fillInUnixFile + ** and clear all the structure's references. Specifically, + ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op */ unixClose(pFile); return rc; @@ -37724,9 +44019,9 @@ static int unixOpen( } } #endif - - assert( zPath==0 || zPath[0]=='/' - || eType==SQLITE_OPEN_MASTER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL + + assert( zPath==0 || zPath[0]=='/' + || eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL ); rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags); @@ -37806,7 +44101,8 @@ static int unixAccess( if( flags==SQLITE_ACCESS_EXISTS ){ struct stat buf; - *pResOut = (0==osStat(zPath, &buf) && buf.st_size>0); + *pResOut = 0==osStat(zPath, &buf) && + (!S_ISREG(buf.st_mode) || buf.st_size>0); }else{ *pResOut = osAccess(zPath, W_OK|R_OK)==0; } @@ -37814,38 +44110,105 @@ static int unixAccess( } /* -** +** A pathname under construction */ -static int mkFullPathname( - const char *zPath, /* Input path */ - char *zOut, /* Output buffer */ - int nOut /* Allocated size of buffer zOut */ +typedef struct DbPath DbPath; +struct DbPath { + int rc; /* Non-zero following any error */ + int nSymlink; /* Number of symlinks resolved */ + char *zOut; /* Write the pathname here */ + int nOut; /* Bytes of space available to zOut[] */ + int nUsed; /* Bytes of zOut[] currently being used */ +}; + +/* Forward reference */ +static void appendAllPathElements(DbPath*,const char*); + +/* +** Append a single path element to the DbPath under construction +*/ +static void appendOnePathElement( + DbPath *pPath, /* Path under construction, to which to append zName */ + const char *zName, /* Name to append to pPath. Not zero-terminated */ + int nName /* Number of significant bytes in zName */ ){ - int nPath = sqlite3Strlen30(zPath); - int iOff = 0; - if( zPath[0]!='/' ){ - if( osGetcwd(zOut, nOut-2)==0 ){ - return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath); + assert( nName>0 ); + assert( zName!=0 ); + if( zName[0]=='.' ){ + if( nName==1 ) return; + if( zName[1]=='.' && nName==2 ){ + if( pPath->nUsed>1 ){ + assert( pPath->zOut[0]=='/' ); + while( pPath->zOut[--pPath->nUsed]!='/' ){} + } + return; } - iOff = sqlite3Strlen30(zOut); - zOut[iOff++] = '/'; } - if( (iOff+nPath+1)>nOut ){ - /* SQLite assumes that xFullPathname() nul-terminates the output buffer - ** even if it returns an error. */ - zOut[iOff] = '\0'; - return SQLITE_CANTOPEN_BKPT; + if( pPath->nUsed + nName + 2 >= pPath->nOut ){ + pPath->rc = SQLITE_ERROR; + return; } - sqlite3_snprintf(nOut-iOff, &zOut[iOff], "%s", zPath); - return SQLITE_OK; + pPath->zOut[pPath->nUsed++] = '/'; + memcpy(&pPath->zOut[pPath->nUsed], zName, nName); + pPath->nUsed += nName; +#if defined(HAVE_READLINK) && defined(HAVE_LSTAT) + if( pPath->rc==SQLITE_OK ){ + const char *zIn; + struct stat buf; + pPath->zOut[pPath->nUsed] = 0; + zIn = pPath->zOut; + if( osLstat(zIn, &buf)!=0 ){ + if( errno!=ENOENT ){ + pPath->rc = unixLogError(SQLITE_CANTOPEN_BKPT, "lstat", zIn); + } + }else if( S_ISLNK(buf.st_mode) ){ + ssize_t got; + char zLnk[SQLITE_MAX_PATHLEN+2]; + if( pPath->nSymlink++ > SQLITE_MAX_SYMLINK ){ + pPath->rc = SQLITE_CANTOPEN_BKPT; + return; + } + got = osReadlink(zIn, zLnk, sizeof(zLnk)-2); + if( got<=0 || got>=(ssize_t)sizeof(zLnk)-2 ){ + pPath->rc = unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zIn); + return; + } + zLnk[got] = 0; + if( zLnk[0]=='/' ){ + pPath->nUsed = 0; + }else{ + pPath->nUsed -= nName + 1; + } + appendAllPathElements(pPath, zLnk); + } + } +#endif +} + +/* +** Append all path elements in zPath to the DbPath under construction. +*/ +static void appendAllPathElements( + DbPath *pPath, /* Path under construction, to which to append zName */ + const char *zPath /* Path to append to pPath. Is zero-terminated */ +){ + int i = 0; + int j = 0; + do{ + while( zPath[i] && zPath[i]!='/' ){ i++; } + if( i>j ){ + appendOnePathElement(pPath, &zPath[j], i-j); + } + j = i+1; + }while( zPath[i++] ); } /* ** Turn a relative pathname into a full pathname. The relative path ** is stored as a nul-terminated string in the buffer pointed to by -** zPath. +** zPath. ** -** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes +** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes ** (in this case, MAX_PATHNAME bytes). The full-path is written to ** this buffer before returning. */ @@ -37855,84 +44218,27 @@ static int unixFullPathname( int nOut, /* Size of output buffer in bytes */ char *zOut /* Output buffer */ ){ -#if !defined(HAVE_READLINK) || !defined(HAVE_LSTAT) - return mkFullPathname(zPath, zOut, nOut); -#else - int rc = SQLITE_OK; - int nByte; - int nLink = 1; /* Number of symbolic links followed so far */ - const char *zIn = zPath; /* Input path for each iteration of loop */ - char *zDel = 0; - - assert( pVfs->mxPathname==MAX_PATHNAME ); + DbPath path; UNUSED_PARAMETER(pVfs); - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. This function could fail if, for example, the - ** current working directory has been unlinked. - */ - SimulateIOError( return SQLITE_ERROR ); - - do { - - /* Call stat() on path zIn. Set bLink to true if the path is a symbolic - ** link, or false otherwise. */ - int bLink = 0; - struct stat buf; - if( osLstat(zIn, &buf)!=0 ){ - if( errno!=ENOENT ){ - rc = unixLogError(SQLITE_CANTOPEN_BKPT, "lstat", zIn); - } - }else{ - bLink = S_ISLNK(buf.st_mode); + path.rc = 0; + path.nUsed = 0; + path.nSymlink = 0; + path.nOut = nOut; + path.zOut = zOut; + if( zPath[0]!='/' ){ + char zPwd[SQLITE_MAX_PATHLEN+2]; + if( osGetcwd(zPwd, sizeof(zPwd)-2)==0 ){ + return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath); } - - if( bLink ){ - if( zDel==0 ){ - zDel = sqlite3_malloc(nOut); - if( zDel==0 ) rc = SQLITE_NOMEM_BKPT; - }else if( ++nLink>SQLITE_MAX_SYMLINKS ){ - rc = SQLITE_CANTOPEN_BKPT; - } - - if( rc==SQLITE_OK ){ - nByte = osReadlink(zIn, zDel, nOut-1); - if( nByte<0 ){ - rc = unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zIn); - }else{ - if( zDel[0]!='/' ){ - int n; - for(n = sqlite3Strlen30(zIn); n>0 && zIn[n-1]!='/'; n--); - if( nByte+n+1>nOut ){ - rc = SQLITE_CANTOPEN_BKPT; - }else{ - memmove(&zDel[n], zDel, nByte+1); - memcpy(zDel, zIn, n); - nByte += n; - } - } - zDel[nByte] = '\0'; - } - } - - zIn = zDel; - } - - assert( rc!=SQLITE_OK || zIn!=zOut || zIn[0]=='/' ); - if( rc==SQLITE_OK && zIn!=zOut ){ - rc = mkFullPathname(zIn, zOut, nOut); - } - if( bLink==0 ) break; - zIn = zOut; - }while( rc==SQLITE_OK ); - - sqlite3_free(zDel); - return rc; -#endif /* HAVE_READLINK && HAVE_LSTAT */ + appendAllPathElements(&path, zPwd); + } + appendAllPathElements(&path, zPath); + zOut[path.nUsed] = 0; + if( path.rc || path.nUsed<2 ) return SQLITE_CANTOPEN_BKPT; + if( path.nSymlink ) return SQLITE_OK_SYMLINK; + return SQLITE_OK; } - #ifndef SQLITE_OMIT_LOAD_EXTENSION /* ** Interfaces for opening a shared library, finding entry points @@ -37962,7 +44268,7 @@ static void unixDlError(sqlite3_vfs *NotUsed, int nBuf, char *zBufOut){ unixLeaveMutex(); } static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){ - /* + /* ** GCC with -pedantic-errors says that C90 does not allow a void* to be ** cast into a pointer to a function. And yet the library dlsym() routine ** returns a void* which is really a pointer to a function. So how do we @@ -37972,7 +44278,7 @@ static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){ ** parameters void* and const char* and returning a pointer to a function. ** We initialize x by assigning it a pointer to the dlsym() function. ** (That assignment requires a cast.) Then we call the function that - ** x points to. + ** x points to. ** ** This work-around is unlikely to work correctly on any system where ** you really cannot cast a function pointer into void*. But then, on the @@ -38015,7 +44321,7 @@ static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){ ** tests repeatable. */ memset(zBuf, 0, nBuf); - randomnessPid = osGetpid(0); + randomnessPid = osGetpid(0); #if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) { int fd, got; @@ -38046,16 +44352,22 @@ static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){ ** than the argument. */ static int unixSleep(sqlite3_vfs *NotUsed, int microseconds){ -#if OS_VXWORKS +#if !defined(HAVE_NANOSLEEP) || HAVE_NANOSLEEP+0 struct timespec sp; - sp.tv_sec = microseconds / 1000000; sp.tv_nsec = (microseconds % 1000000) * 1000; + + /* Almost all modern unix systems support nanosleep(). But if you are + ** compiling for one of the rare exceptions, you can use + ** -DHAVE_NANOSLEEP=0 (perhaps in conjuction with -DHAVE_USLEEP if + ** usleep() is available) in order to bypass the use of nanosleep() */ nanosleep(&sp, NULL); + UNUSED_PARAMETER(NotUsed); return microseconds; #elif defined(HAVE_USLEEP) && HAVE_USLEEP - usleep(microseconds); + if( microseconds>=1000000 ) sleep(microseconds/1000000); + if( microseconds%1000000 ) usleep(microseconds%1000000); UNUSED_PARAMETER(NotUsed); return microseconds; #else @@ -38082,7 +44394,7 @@ SQLITE_API int sqlite3_current_time = 0; /* Fake system time in seconds since 1 ** epoch of noon in Greenwich on November 24, 4714 B.C according to the ** proleptic Gregorian calendar. ** -** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date +** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date ** cannot be found. */ static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){ @@ -38189,7 +44501,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** To address the performance and cache coherency issues, proxy file locking ** changes the way database access is controlled by limiting access to a ** single host at a time and moving file locks off of the database file -** and onto a proxy file on the local file system. +** and onto a proxy file on the local file system. ** ** ** Using proxy locks @@ -38215,19 +44527,19 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** actual proxy file name is generated from the name and path of the ** database file. For example: ** -** For database path "/Users/me/foo.db" +** For database path "/Users/me/foo.db" ** The lock path will be "/sqliteplocks/_Users_me_foo.db:auto:") ** ** Once a lock proxy is configured for a database connection, it can not ** be removed, however it may be switched to a different proxy path via ** the above APIs (assuming the conch file is not being held by another -** connection or process). +** connection or process). ** ** ** How proxy locking works ** ----------------------- ** -** Proxy file locking relies primarily on two new supporting files: +** Proxy file locking relies primarily on two new supporting files: ** ** * conch file to limit access to the database file to a single host ** at a time @@ -38254,11 +44566,11 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** host (the conch ensures that they all use the same local lock file). ** ** Requesting the lock proxy does not immediately take the conch, it is -** only taken when the first request to lock database file is made. +** only taken when the first request to lock database file is made. ** This matches the semantics of the traditional locking behavior, where ** opening a connection to a database file does not take a lock on it. -** The shared lock and an open file descriptor are maintained until -** the connection to the database is closed. +** The shared lock and an open file descriptor are maintained until +** the connection to the database is closed. ** ** The proxy file and the lock file are never deleted so they only need ** to be created the first time they are used. @@ -38272,7 +44584,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** automatically configured for proxy locking, lock files are ** named automatically using the same logic as ** PRAGMA lock_proxy_file=":auto:" -** +** ** SQLITE_PROXY_DEBUG ** ** Enables the logging of error messages during host id file @@ -38287,8 +44599,8 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** ** Permissions to use when creating a directory for storing the ** lock proxy files, only used when LOCKPROXYDIR is not set. -** -** +** +** ** As mentioned above, when compiled with SQLITE_PREFER_PROXY_LOCKING, ** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will ** force proxy locking to be used for every database file opened, and 0 @@ -38298,12 +44610,12 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ */ /* -** Proxy locking is only available on MacOSX +** Proxy locking is only available on MacOSX */ #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE /* -** The proxyLockingContext has the path and file structures for the remote +** The proxyLockingContext has the path and file structures for the remote ** and local proxy files in it */ typedef struct proxyLockingContext proxyLockingContext; @@ -38319,10 +44631,10 @@ struct proxyLockingContext { sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */ }; -/* -** The proxy lock file path for the database at dbPath is written into lPath, +/* +** The proxy lock file path for the database at dbPath is written into lPath, ** which must point to valid, writable memory large enough for a maxLen length -** file path. +** file path. */ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ int len; @@ -38339,7 +44651,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ lPath, errno, osGetpid(0))); return SQLITE_IOERR_LOCK; } - len = strlcat(lPath, "sqliteplocks", maxLen); + len = strlcat(lPath, "sqliteplocks", maxLen); } # else len = strlcpy(lPath, "/tmp/", maxLen); @@ -38349,7 +44661,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ if( lPath[len-1]!='/' ){ len = strlcat(lPath, "/", maxLen); } - + /* transform the db path to a unique cache name */ dbLen = (int)strlen(dbPath); for( i=0; i 0) ){ /* only mkdir if leaf dir != "." or "/" or ".." */ - if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/') + if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/') || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){ buf[i]='\0'; if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){ @@ -38413,7 +44725,7 @@ static int proxyCreateUnixFile( int fd = -1; unixFile *pNew; int rc = SQLITE_OK; - int openFlags = O_RDWR | O_CREAT; + int openFlags = O_RDWR | O_CREAT | O_NOFOLLOW; sqlite3_vfs dummyVfs; int terrno = 0; UnixUnusedFd *pUnused = NULL; @@ -38443,7 +44755,7 @@ static int proxyCreateUnixFile( } } if( fd<0 ){ - openFlags = O_RDONLY; + openFlags = O_RDONLY | O_NOFOLLOW; fd = robust_open(path, openFlags, 0); terrno = errno; } @@ -38454,13 +44766,13 @@ static int proxyCreateUnixFile( switch (terrno) { case EACCES: return SQLITE_PERM; - case EIO: + case EIO: return SQLITE_IOERR_LOCK; /* even though it is the conch */ default: return SQLITE_CANTOPEN_BKPT; } } - + pNew = (unixFile *)sqlite3_malloc64(sizeof(*pNew)); if( pNew==NULL ){ rc = SQLITE_NOMEM_BKPT; @@ -38474,13 +44786,13 @@ static int proxyCreateUnixFile( pUnused->fd = fd; pUnused->flags = openFlags; pNew->pPreallocatedUnused = pUnused; - + rc = fillInUnixFile(&dummyVfs, fd, (sqlite3_file*)pNew, path, 0); if( rc==SQLITE_OK ){ *ppFile = pNew; return SQLITE_OK; } -end_create_proxy: +end_create_proxy: robust_close(pNew, fd, __LINE__); sqlite3_free(pNew); sqlite3_free(pUnused); @@ -38494,18 +44806,18 @@ SQLITE_API int sqlite3_hostid_num = 0; #define PROXY_HOSTIDLEN 16 /* conch file host id length */ -#ifdef HAVE_GETHOSTUUID +#if HAVE_GETHOSTUUID /* Not always defined in the headers as it ought to be */ extern int gethostuuid(uuid_t id, const struct timespec *wait); #endif -/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN +/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN ** bytes of writable memory. */ static int proxyGetHostID(unsigned char *pHostID, int *pError){ assert(PROXY_HOSTIDLEN == sizeof(uuid_t)); memset(pHostID, 0, PROXY_HOSTIDLEN); -#ifdef HAVE_GETHOSTUUID +#if HAVE_GETHOSTUUID { struct timespec timeout = {1, 0}; /* 1 sec timeout */ if( gethostuuid(pHostID, &timeout) ){ @@ -38525,7 +44837,7 @@ static int proxyGetHostID(unsigned char *pHostID, int *pError){ pHostID[0] = (char)(pHostID[0] + (char)(sqlite3_hostid_num & 0xFF)); } #endif - + return SQLITE_OK; } @@ -38536,14 +44848,14 @@ static int proxyGetHostID(unsigned char *pHostID, int *pError){ #define PROXY_PATHINDEX (PROXY_HEADERLEN+PROXY_HOSTIDLEN) #define PROXY_MAXCONCHLEN (PROXY_HEADERLEN+PROXY_HOSTIDLEN+MAXPATHLEN) -/* -** Takes an open conch file, copies the contents to a new path and then moves +/* +** Takes an open conch file, copies the contents to a new path and then moves ** it back. The newly created file's file descriptor is assigned to the -** conch file structure and finally the original conch file descriptor is +** conch file structure and finally the original conch file descriptor is ** closed. Returns zero if successful. */ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; + proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; unixFile *conchFile = pCtx->conchFile; char tPath[MAXPATHLEN]; char buf[PROXY_MAXCONCHLEN]; @@ -38557,7 +44869,7 @@ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){ /* create a new path by replace the trailing '-conch' with '-break' */ pathLen = strlcpy(tPath, cPath, MAXPATHLEN); - if( pathLen>MAXPATHLEN || pathLen<6 || + if( pathLen>MAXPATHLEN || pathLen<6 || (strlcpy(&tPath[pathLen-5], "break", 6) != 5) ){ sqlite3_snprintf(sizeof(errmsg),errmsg,"path error (len %d)",(int)pathLen); goto end_breaklock; @@ -38569,7 +44881,7 @@ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){ goto end_breaklock; } /* write it out to the temporary break file */ - fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL), 0); + fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW), 0); if( fd<0 ){ sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno); goto end_breaklock; @@ -38599,24 +44911,24 @@ end_breaklock: return rc; } -/* Take the requested lock on the conch file and break a stale lock if the +/* Take the requested lock on the conch file and break a stale lock if the ** host id matches. */ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; + proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; unixFile *conchFile = pCtx->conchFile; int rc = SQLITE_OK; int nTries = 0; struct timespec conchModTime; - + memset(&conchModTime, 0, sizeof(conchModTime)); do { rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); nTries ++; if( rc==SQLITE_BUSY ){ /* If the lock failed (busy): - * 1st try: get the mod time of the conch, wait 0.5s and try again. - * 2nd try: fail if the mod time changed or host id is different, wait + * 1st try: get the mod time of the conch, wait 0.5s and try again. + * 2nd try: fail if the mod time changed or host id is different, wait * 10 sec and try again * 3rd try: break the lock unless the mod time has changed. */ @@ -38625,20 +44937,20 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ storeLastErrno(pFile, errno); return SQLITE_IOERR_LOCK; } - + if( nTries==1 ){ conchModTime = buf.st_mtimespec; - usleep(500000); /* wait 0.5 sec and try the lock again*/ - continue; + unixSleep(0,500000); /* wait 0.5 sec and try the lock again*/ + continue; } assert( nTries>1 ); - if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec || + if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec || conchModTime.tv_nsec != buf.st_mtimespec.tv_nsec ){ return SQLITE_BUSY; } - - if( nTries==2 ){ + + if( nTries==2 ){ char tBuf[PROXY_MAXCONCHLEN]; int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0); if( len<0 ){ @@ -38654,10 +44966,10 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ /* don't break the lock on short read or a version mismatch */ return SQLITE_BUSY; } - usleep(10000000); /* wait 10 sec and try the lock again */ - continue; + unixSleep(0,10000000); /* wait 10 sec and try the lock again */ + continue; } - + assert( nTries==3 ); if( 0==proxyBreakConchLock(pFile, myHostID) ){ rc = SQLITE_OK; @@ -38670,19 +44982,19 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ } } } while( rc==SQLITE_BUSY && nTries<3 ); - + return rc; } -/* Takes the conch by taking a shared lock and read the contents conch, if -** lockPath is non-NULL, the host ID and lock file path must match. A NULL -** lockPath means that the lockPath in the conch file will be used if the -** host IDs match, or a new lock path will be generated automatically +/* Takes the conch by taking a shared lock and read the contents conch, if +** lockPath is non-NULL, the host ID and lock file path must match. A NULL +** lockPath means that the lockPath in the conch file will be used if the +** host IDs match, or a new lock path will be generated automatically ** and written to the conch file. */ static int proxyTakeConch(unixFile *pFile){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - + proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; + if( pCtx->conchHeld!=0 ){ return SQLITE_OK; }else{ @@ -38698,7 +45010,7 @@ static int proxyTakeConch(unixFile *pFile){ int readLen = 0; int tryOldLockPath = 0; int forceNewLockPath = 0; - + OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h, (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), osGetpid(0))); @@ -38719,21 +45031,21 @@ static int proxyTakeConch(unixFile *pFile){ storeLastErrno(pFile, conchFile->lastErrno); rc = SQLITE_IOERR_READ; goto end_takeconch; - }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) || + }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) || readBuf[0]!=(char)PROXY_CONCHVERSION ){ - /* a short read or version format mismatch means we need to create a new - ** conch file. + /* a short read or version format mismatch means we need to create a new + ** conch file. */ createConch = 1; } /* if the host id matches and the lock path already exists in the conch - ** we'll try to use the path there, if we can't open that path, we'll - ** retry with a new auto-generated path + ** we'll try to use the path there, if we can't open that path, we'll + ** retry with a new auto-generated path */ do { /* in case we need to try again for an :auto: named lock file */ if( !createConch && !forceNewLockPath ){ - hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID, + hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN); /* if the conch has data compare the contents */ if( !pCtx->lockProxyPath ){ @@ -38742,7 +45054,7 @@ static int proxyTakeConch(unixFile *pFile){ */ if( hostIdMatch ){ size_t pathLen = (readLen - PROXY_PATHINDEX); - + if( pathLen>=MAXPATHLEN ){ pathLen=MAXPATHLEN-1; } @@ -38758,23 +45070,23 @@ static int proxyTakeConch(unixFile *pFile){ readLen-PROXY_PATHINDEX) ){ /* conch host and lock path match */ - goto end_takeconch; + goto end_takeconch; } } - + /* if the conch isn't writable and doesn't match, we can't take it */ if( (conchFile->openFlags&O_RDWR) == 0 ){ rc = SQLITE_BUSY; goto end_takeconch; } - + /* either the conch didn't match or we need to create a new one */ if( !pCtx->lockProxyPath ){ proxyGetLockPath(pCtx->dbPath, lockPath, MAXPATHLEN); tempLockPath = lockPath; /* create a copy of the lock path _only_ if the conch is taken */ } - + /* update conch with host and path (this will fail if other process ** has a shared lock already), if the host id matches, use the big ** stick. @@ -38785,7 +45097,7 @@ static int proxyTakeConch(unixFile *pFile){ /* We are trying for an exclusive lock but another thread in this ** same process is still holding a shared lock. */ rc = SQLITE_BUSY; - } else { + } else { rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); } }else{ @@ -38794,7 +45106,7 @@ static int proxyTakeConch(unixFile *pFile){ if( rc==SQLITE_OK ){ char writeBuffer[PROXY_MAXCONCHLEN]; int writeSize = 0; - + writeBuffer[0] = (char)PROXY_CONCHVERSION; memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN); if( pCtx->lockProxyPath!=NULL ){ @@ -38807,8 +45119,8 @@ static int proxyTakeConch(unixFile *pFile){ robust_ftruncate(conchFile->h, writeSize); rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0); full_fsync(conchFile->h,0,0); - /* If we created a new conch file (not just updated the contents of a - ** valid conch file), try to match the permissions of the database + /* If we created a new conch file (not just updated the contents of a + ** valid conch file), try to match the permissions of the database */ if( rc==SQLITE_OK && createConch ){ struct stat buf; @@ -38832,14 +45144,14 @@ static int proxyTakeConch(unixFile *pFile){ } }else{ int code = errno; - fprintf(stderr, "STAT FAILED[%d] with %d %s\n", + fprintf(stderr, "STAT FAILED[%d] with %d %s\n", err, code, strerror(code)); #endif } } } conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, SHARED_LOCK); - + end_takeconch: OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h)); if( rc==SQLITE_OK && pFile->openFlags ){ @@ -38862,7 +45174,7 @@ static int proxyTakeConch(unixFile *pFile){ rc = proxyCreateUnixFile(path, &pCtx->lockProxy, 1); if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM && tryOldLockPath ){ /* we couldn't create the proxy lock file with the old lock file path - ** so try again via auto-naming + ** so try again via auto-naming */ forceNewLockPath = 1; tryOldLockPath = 0; @@ -38882,7 +45194,7 @@ static int proxyTakeConch(unixFile *pFile){ } if( rc==SQLITE_OK ){ pCtx->conchHeld = 1; - + if( pCtx->lockProxy->pMethod == &afpIoMethods ){ afpLockingContext *afpCtx; afpCtx = (afpLockingContext *)pCtx->lockProxy->lockingContext; @@ -38894,7 +45206,7 @@ static int proxyTakeConch(unixFile *pFile){ OSTRACE(("TAKECONCH %d %s\n", conchFile->h, rc==SQLITE_OK?"ok":"failed")); return rc; - } while (1); /* in case we need to retry the :auto: lock file - + } while (1); /* in case we need to retry the :auto: lock file - ** we should never get here except via the 'continue' call. */ } } @@ -38910,7 +45222,7 @@ static int proxyReleaseConch(unixFile *pFile){ pCtx = (proxyLockingContext *)pFile->lockingContext; conchFile = pCtx->conchFile; OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h, - (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), + (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), osGetpid(0))); if( pCtx->conchHeld>0 ){ rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); @@ -38938,13 +45250,13 @@ static int proxyCreateConchPathname(char *dbPath, char **pConchPath){ char *conchPath; /* buffer in which to construct conch name */ /* Allocate space for the conch filename and initialize the name to - ** the name of the original database file. */ + ** the name of the original database file. */ *pConchPath = conchPath = (char *)sqlite3_malloc64(len + 8); if( conchPath==0 ){ return SQLITE_NOMEM_BKPT; } memcpy(conchPath, dbPath, len+1); - + /* now insert a "." before the last / character */ for( i=(len-1); i>=0; i-- ){ if( conchPath[i]=='/' ){ @@ -38967,7 +45279,7 @@ static int proxyCreateConchPathname(char *dbPath, char **pConchPath){ /* Takes a fully configured proxy locking-style unix file and switches -** the local lock file path +** the local lock file path */ static int switchLockProxyPath(unixFile *pFile, const char *path) { proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; @@ -38976,7 +45288,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) { if( pFile->eFileLock!=NO_LOCK ){ return SQLITE_BUSY; - } + } /* nothing to do if the path is NULL, :auto: or matches the existing path */ if( !path || path[0]=='\0' || !strcmp(path, ":auto:") || @@ -38994,7 +45306,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) { sqlite3_free(oldPath); pCtx->lockProxyPath = sqlite3DbStrDup(0, path); } - + return rc; } @@ -39008,7 +45320,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) { static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){ #if defined(__APPLE__) if( pFile->pMethod == &afpIoMethods ){ - /* afp style keeps a reference to the db path in the filePath field + /* afp style keeps a reference to the db path in the filePath field ** of the struct */ assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, @@ -39029,9 +45341,9 @@ static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){ } /* -** Takes an already filled in unix file and alters it so all file locking +** Takes an already filled in unix file and alters it so all file locking ** will be performed on the local proxy lock file. The following fields -** are preserved in the locking context so that they can be restored and +** are preserved in the locking context so that they can be restored and ** the unix structure properly cleaned up at close time: ** ->lockingContext ** ->pMethod @@ -39041,7 +45353,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { char dbPath[MAXPATHLEN+1]; /* Name of the database file */ char *lockPath=NULL; int rc = SQLITE_OK; - + if( pFile->eFileLock!=NO_LOCK ){ return SQLITE_BUSY; } @@ -39051,7 +45363,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { }else{ lockPath=(char *)path; } - + OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h, (lockPath ? lockPath : ":auto:"), osGetpid(0))); @@ -39085,7 +45397,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { rc = SQLITE_OK; } } - } + } if( rc==SQLITE_OK && lockPath ){ pCtx->lockProxyPath = sqlite3DbStrDup(0, lockPath); } @@ -39097,7 +45409,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { } } if( rc==SQLITE_OK ){ - /* all memory is allocated, proxys are created and assigned, + /* all memory is allocated, proxys are created and assigned, ** switch the locking context and pMethod then return. */ pCtx->oldLockingContext = pFile->lockingContext; @@ -39105,12 +45417,12 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { pCtx->pOldMethod = pFile->pMethod; pFile->pMethod = &proxyIoMethods; }else{ - if( pCtx->conchFile ){ + if( pCtx->conchFile ){ pCtx->conchFile->pMethod->xClose((sqlite3_file *)pCtx->conchFile); sqlite3_free(pCtx->conchFile); } sqlite3DbFree(0, pCtx->lockProxyPath); - sqlite3_free(pCtx->conchFilePath); + sqlite3_free(pCtx->conchFilePath); sqlite3_free(pCtx); } OSTRACE(("TRANSPROXY %d %s\n", pFile->h, @@ -39148,7 +45460,7 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ if( isProxyStyle ){ /* turn off proxy locking - not supported. If support is added for ** switching proxy locking mode off then it will need to fail if - ** the journal mode is WAL mode. + ** the journal mode is WAL mode. */ rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/; }else{ @@ -39158,9 +45470,9 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ }else{ const char *proxyPath = (const char *)pArg; if( isProxyStyle ){ - proxyLockingContext *pCtx = + proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; - if( !strcmp(pArg, ":auto:") + if( !strcmp(pArg, ":auto:") || (pCtx->lockProxyPath && !strncmp(pCtx->lockProxyPath, proxyPath, MAXPATHLEN)) ){ @@ -39179,7 +45491,7 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ assert( 0 ); /* The call assures that only valid opcodes are sent */ } } - /*NOTREACHED*/ + /*NOTREACHED*/ assert(0); return SQLITE_ERROR; } @@ -39285,7 +45597,7 @@ static int proxyClose(sqlite3_file *id) { unixFile *lockProxy = pCtx->lockProxy; unixFile *conchFile = pCtx->conchFile; int rc = SQLITE_OK; - + if( lockProxy ){ rc = lockProxy->pMethod->xUnlock((sqlite3_file*)lockProxy, NO_LOCK); if( rc ) return rc; @@ -39322,7 +45634,7 @@ static int proxyClose(sqlite3_file *id) { ** The proxy locking style is intended for use with AFP filesystems. ** And since AFP is only supported on MacOSX, the proxy locking is also ** restricted to MacOSX. -** +** ** ******************* End of the proxy lock implementation ********************** ******************************************************************************/ @@ -39340,8 +45652,8 @@ static int proxyClose(sqlite3_file *id) { ** necessarily been initialized when this routine is called, and so they ** should not be used. */ -SQLITE_API int sqlite3_os_init(void){ - /* +SQLITE_API int sqlite3_os_init(void){ + /* ** The following macro defines an initializer for an sqlite3_vfs object. ** The name of the VFS is NAME. The pAppData is a pointer to a pointer ** to the "finder" function. (pAppData is a pointer to a pointer because @@ -39357,7 +45669,7 @@ SQLITE_API int sqlite3_os_init(void){ ** ** Most finders simply return a pointer to a fixed sqlite3_io_methods ** object. But the "autolockIoFinder" available on MacOSX does a little - ** more than that; it looks at the filesystem type that hosts the + ** more than that; it looks at the filesystem type that hosts the ** database file and tries to choose an locking method appropriate for ** that filesystem time. */ @@ -39427,10 +45739,40 @@ SQLITE_API int sqlite3_os_init(void){ /* Register all VFSes defined in the aVfs[] array */ for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){ +#ifdef SQLITE_DEFAULT_UNIX_VFS + sqlite3_vfs_register(&aVfs[i], + 0==strcmp(aVfs[i].zName,SQLITE_DEFAULT_UNIX_VFS)); +#else sqlite3_vfs_register(&aVfs[i], i==0); +#endif } +#ifdef SQLITE_OS_KV_OPTIONAL + sqlite3KvvfsInit(); +#endif unixBigLock = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1); - return SQLITE_OK; + +#ifndef SQLITE_OMIT_WAL + /* Validate lock assumptions */ + assert( SQLITE_SHM_NLOCK==8 ); /* Number of available locks */ + assert( UNIX_SHM_BASE==120 ); /* Start of locking area */ + /* Locks: + ** WRITE UNIX_SHM_BASE 120 + ** CKPT UNIX_SHM_BASE+1 121 + ** RECOVER UNIX_SHM_BASE+2 122 + ** READ-0 UNIX_SHM_BASE+3 123 + ** READ-1 UNIX_SHM_BASE+4 124 + ** READ-2 UNIX_SHM_BASE+5 125 + ** READ-3 UNIX_SHM_BASE+6 126 + ** READ-4 UNIX_SHM_BASE+7 127 + ** DMS UNIX_SHM_BASE+8 128 + */ + assert( UNIX_SHM_DMS==128 ); /* Byte offset of the deadman-switch */ +#endif + + /* Initialize temp file dir array. */ + unixTempFileInit(); + + return SQLITE_OK; } /* @@ -39440,11 +45782,11 @@ SQLITE_API int sqlite3_os_init(void){ ** to release dynamically allocated objects. But not on unix. ** This routine is a no-op for unix. */ -SQLITE_API int sqlite3_os_end(void){ +SQLITE_API int sqlite3_os_end(void){ unixBigLock = 0; - return SQLITE_OK; + return SQLITE_OK; } - + #endif /* SQLITE_OS_UNIX */ /************** End of os_unix.c *********************************************/ @@ -39469,205 +45811,7 @@ SQLITE_API int sqlite3_os_end(void){ /* ** Include code that is common to all os_*.c files */ -/************** Include os_common.h in the middle of os_win.c ****************/ -/************** Begin file os_common.h ***************************************/ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains macros and a little bit of code that is common to -** all of the platform-specific files (os_*.c) and is #included into those -** files. -** -** This file should be #included by the os_*.c files only. It is not a -** general purpose header file. -*/ -#ifndef _OS_COMMON_H_ -#define _OS_COMMON_H_ - -/* -** At least two bugs have slipped in because we changed the MEMORY_DEBUG -** macro to SQLITE_DEBUG and some older makefiles have not yet made the -** switch. The following code should catch this problem at compile-time. -*/ -#ifdef MEMORY_DEBUG -# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." -#endif - -/* -** Macros for performance tracing. Normally turned off. Only works -** on i486 hardware. -*/ -#ifdef SQLITE_PERFORMANCE_TRACE - -/* -** hwtime.h contains inline assembler code for implementing -** high-performance timing routines. -*/ -/************** Include hwtime.h in the middle of os_common.h ****************/ -/************** Begin file hwtime.h ******************************************/ -/* -** 2008 May 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains inline asm code for retrieving "high-performance" -** counters for x86 class CPUs. -*/ -#ifndef SQLITE_HWTIME_H -#define SQLITE_HWTIME_H - -/* -** The following routine only works on pentium-class (or newer) processors. -** It uses the RDTSC opcode to read the cycle count value out of the -** processor and returns that value. This can be used for high-res -** profiling. -*/ -#if (defined(__GNUC__) || defined(_MSC_VER)) && \ - (defined(i386) || defined(__i386__) || defined(_M_IX86)) - - #if defined(__GNUC__) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned int lo, hi; - __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); - return (sqlite_uint64)hi << 32 | lo; - } - - #elif defined(_MSC_VER) - - __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ - __asm { - rdtsc - ret ; return value at EDX:EAX - } - } - - #endif - -#elif (defined(__GNUC__) && defined(__x86_64__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long val; - __asm__ __volatile__ ("rdtsc" : "=A" (val)); - return val; - } - -#elif (defined(__GNUC__) && defined(__ppc__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long long retval; - unsigned long junk; - __asm__ __volatile__ ("\n\ - 1: mftbu %1\n\ - mftb %L0\n\ - mftbu %0\n\ - cmpw %0,%1\n\ - bne 1b" - : "=r" (retval), "=r" (junk)); - return retval; - } - -#else - - #error Need implementation of sqlite3Hwtime() for your platform. - - /* - ** To compile without implementing sqlite3Hwtime() for your platform, - ** you can remove the above #error and use the following - ** stub function. You will lose timing support for many - ** of the debugging and testing utilities, but it should at - ** least compile and run. - */ -SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } - -#endif - -#endif /* !defined(SQLITE_HWTIME_H) */ - -/************** End of hwtime.h **********************************************/ -/************** Continuing where we left off in os_common.h ******************/ - -static sqlite_uint64 g_start; -static sqlite_uint64 g_elapsed; -#define TIMER_START g_start=sqlite3Hwtime() -#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start -#define TIMER_ELAPSED g_elapsed -#else -#define TIMER_START -#define TIMER_END -#define TIMER_ELAPSED ((sqlite_uint64)0) -#endif - -/* -** If we compile with the SQLITE_TEST macro set, then the following block -** of code will give us the ability to simulate a disk I/O error. This -** is used for testing the I/O recovery logic. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_io_error_hit; -SQLITE_API extern int sqlite3_io_error_hardhit; -SQLITE_API extern int sqlite3_io_error_pending; -SQLITE_API extern int sqlite3_io_error_persist; -SQLITE_API extern int sqlite3_io_error_benign; -SQLITE_API extern int sqlite3_diskfull_pending; -SQLITE_API extern int sqlite3_diskfull; -#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) -#define SimulateIOError(CODE) \ - if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ - || sqlite3_io_error_pending-- == 1 ) \ - { local_ioerr(); CODE; } -static void local_ioerr(){ - IOTRACE(("IOERR\n")); - sqlite3_io_error_hit++; - if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; -} -#define SimulateDiskfullError(CODE) \ - if( sqlite3_diskfull_pending ){ \ - if( sqlite3_diskfull_pending == 1 ){ \ - local_ioerr(); \ - sqlite3_diskfull = 1; \ - sqlite3_io_error_hit = 1; \ - CODE; \ - }else{ \ - sqlite3_diskfull_pending--; \ - } \ - } -#else -#define SimulateIOErrorBenign(X) -#define SimulateIOError(A) -#define SimulateDiskfullError(A) -#endif /* defined(SQLITE_TEST) */ - -/* -** When testing, keep a count of the number of open files. -*/ -#if defined(SQLITE_TEST) -SQLITE_API extern int sqlite3_open_file_count; -#define OpenCounter(X) sqlite3_open_file_count+=(X) -#else -#define OpenCounter(X) -#endif /* defined(SQLITE_TEST) */ - -#endif /* !defined(_OS_COMMON_H_) */ - -/************** End of os_common.h *******************************************/ -/************** Continuing where we left off in os_win.c *********************/ +/* #include "os_common.h" */ /* ** Include the header file for the Windows VFS. @@ -39933,8 +46077,7 @@ struct winFile { int nFetchOut; /* Number of outstanding xFetch references */ HANDLE hMap; /* Handle for accessing memory mapping */ void *pMapRegion; /* Area memory mapped */ - sqlite3_int64 mmapSize; /* Usable size of mapped region */ - sqlite3_int64 mmapSizeActual; /* Actual size of mapped region */ + sqlite3_int64 mmapSize; /* Size of mapped region */ sqlite3_int64 mmapSizeMax; /* Configured FCNTL_MMAP_SIZE value */ #endif }; @@ -40809,7 +46952,7 @@ static struct win_syscall { /* ** This is the xSetSystemCall() method of sqlite3_vfs for all of the -** "win32" VFSes. Return SQLITE_OK opon successfully updating the +** "win32" VFSes. Return SQLITE_OK upon successfully updating the ** system call pointer, or SQLITE_NOTFOUND if there is no configurable ** system call named zName. */ @@ -40940,17 +47083,17 @@ SQLITE_API int sqlite3_win32_compact_heap(LPUINT pnLargest){ */ SQLITE_API int sqlite3_win32_reset_heap(){ int rc; - MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */ + MUTEX_LOGIC( sqlite3_mutex *pMainMtx; ) /* The main static mutex */ MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */ - MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) + MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); ) MUTEX_LOGIC( pMem = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); ) - sqlite3_mutex_enter(pMaster); + sqlite3_mutex_enter(pMainMtx); sqlite3_mutex_enter(pMem); winMemAssertMagic(); if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){ /* ** At this point, there should be no outstanding memory allocations on - ** the heap. Also, since both the master and memsys locks are currently + ** the heap. Also, since both the main and memsys locks are currently ** being held by us, no other function (i.e. from another thread) should ** be able to even access the heap. Attempt to destroy and recreate our ** isolated Win32 native heap now. @@ -40973,7 +47116,7 @@ SQLITE_API int sqlite3_win32_reset_heap(){ rc = SQLITE_BUSY; } sqlite3_mutex_leave(pMem); - sqlite3_mutex_leave(pMaster); + sqlite3_mutex_leave(pMainMtx); return rc; } #endif /* SQLITE_WIN32_MALLOC */ @@ -41568,10 +47711,12 @@ SQLITE_API int sqlite3_win32_set_directory8( const char *zValue /* New value for directory being set or reset */ ){ char **ppDirectory = 0; + int rc; #ifndef SQLITE_OMIT_AUTOINIT - int rc = sqlite3_initialize(); + rc = sqlite3_initialize(); if( rc ) return rc; #endif + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); if( type==SQLITE_WIN32_DATA_DIRECTORY_TYPE ){ ppDirectory = &sqlite3_data_directory; }else if( type==SQLITE_WIN32_TEMP_DIRECTORY_TYPE ){ @@ -41586,14 +47731,19 @@ SQLITE_API int sqlite3_win32_set_directory8( if( zValue && zValue[0] ){ zCopy = sqlite3_mprintf("%s", zValue); if ( zCopy==0 ){ - return SQLITE_NOMEM_BKPT; + rc = SQLITE_NOMEM_BKPT; + goto set_directory8_done; } } sqlite3_free(*ppDirectory); *ppDirectory = zCopy; - return SQLITE_OK; + rc = SQLITE_OK; + }else{ + rc = SQLITE_ERROR; } - return SQLITE_ERROR; +set_directory8_done: + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); + return rc; } /* @@ -42382,7 +48532,7 @@ static int winRead( pFile->h, pBuf, amt, offset, pFile->locktype)); #if SQLITE_MAX_MMAP_SIZE>0 - /* Deal with as much of this read request as possible by transfering + /* Deal with as much of this read request as possible by transferring ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ @@ -42460,7 +48610,7 @@ static int winWrite( pFile->h, pBuf, amt, offset, pFile->locktype)); #if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0 - /* Deal with as much of this write request as possible by transfering + /* Deal with as much of this write request as possible by transferring ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ @@ -42553,6 +48703,29 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ winFile *pFile = (winFile*)id; /* File handle object */ int rc = SQLITE_OK; /* Return code for this function */ DWORD lastErrno; +#if SQLITE_MAX_MMAP_SIZE>0 + sqlite3_int64 oldMmapSize; + if( pFile->nFetchOut>0 ){ + /* File truncation is a no-op if there are outstanding memory mapped + ** pages. This is because truncating the file means temporarily unmapping + ** the file, and that might delete memory out from under existing cursors. + ** + ** This can result in incremental vacuum not truncating the file, + ** if there is an active read cursor when the incremental vacuum occurs. + ** No real harm comes of this - the database file is not corrupted, + ** though some folks might complain that the file is bigger than it + ** needs to be. + ** + ** The only feasible work-around is to defer the truncation until after + ** all references to memory-mapped content are closed. That is doable, + ** but involves adding a few branches in the common write code path which + ** could slow down normal operations slightly. Hence, we have decided for + ** now to simply make transactions a no-op if there are pending reads. We + ** can maybe revisit this decision in the future. + */ + return SQLITE_OK; + } +#endif assert( pFile ); SimulateIOError(return SQLITE_IOERR_TRUNCATE); @@ -42568,6 +48741,15 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; } +#if SQLITE_MAX_MMAP_SIZE>0 + if( pFile->pMapRegion ){ + oldMmapSize = pFile->mmapSize; + }else{ + oldMmapSize = 0; + } + winUnmapfile(pFile); +#endif + /* SetEndOfFile() returns non-zero when successful, or zero when it fails. */ if( winSeekFile(pFile, nByte) ){ rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno, @@ -42580,12 +48762,12 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ } #if SQLITE_MAX_MMAP_SIZE>0 - /* If the file was truncated to a size smaller than the currently - ** mapped region, reduce the effective mapping size as well. SQLite will - ** use read() and write() to access data beyond this point from now on. - */ - if( pFile->pMapRegion && nBytemmapSize ){ - pFile->mmapSize = nByte; + if( rc==SQLITE_OK && oldMmapSize>0 ){ + if( oldMmapSize>nByte ){ + winMapfile(pFile, -1); + }else{ + winMapfile(pFile, oldMmapSize); + } } #endif @@ -42597,7 +48779,7 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ #ifdef SQLITE_TEST /* ** Count the number of fullsyncs and normal syncs. This is used to test -** that syncs and fullsyncs are occuring at the right times. +** that syncs and fullsyncs are occurring at the right times. */ SQLITE_API int sqlite3_sync_count = 0; SQLITE_API int sqlite3_fullsync_count = 0; @@ -42954,7 +49136,7 @@ static int winLock(sqlite3_file *id, int locktype){ */ if( locktype==EXCLUSIVE_LOCK && res ){ assert( pFile->locktype>=SHARED_LOCK ); - res = winUnlockReadLock(pFile); + (void)winUnlockReadLock(pFile); res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS, SHARED_FIRST, 0, SHARED_SIZE, 0); if( res ){ @@ -43120,6 +49302,7 @@ static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){ /* Forward references to VFS helper methods used for temporary files */ static int winGetTempname(sqlite3_vfs *, char **); static int winIsDir(const void *); +static BOOL winIsLongPathPrefix(const char *); static BOOL winIsDriveLetterAndColon(const char *); /* @@ -43687,10 +49870,14 @@ static int winShmLock( winFile *pDbFd = (winFile*)fd; /* Connection holding shared memory */ winShm *p = pDbFd->pShm; /* The shared memory being locked */ winShm *pX; /* For looping over all siblings */ - winShmNode *pShmNode = p->pShmNode; + winShmNode *pShmNode; int rc = SQLITE_OK; /* Result code */ u16 mask; /* Mask of locks to take or release */ + if( p==0 ) return SQLITE_IOERR_SHMLOCK; + pShmNode = p->pShmNode; + if( NEVER(pShmNode==0) ) return SQLITE_IOERR_SHMLOCK; + assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); assert( n>=1 ); assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) @@ -43833,6 +50020,7 @@ static int winShmMap( rc = winOpenSharedMemory(pDbFd); if( rc!=SQLITE_OK ) return rc; pShm = pDbFd->pShm; + assert( pShm!=0 ); } pShmNode = pShm->pShmNode; @@ -43971,9 +50159,9 @@ shmpage_out: static int winUnmapfile(winFile *pFile){ assert( pFile!=0 ); OSTRACE(("UNMAP-FILE pid=%lu, pFile=%p, hMap=%p, pMapRegion=%p, " - "mmapSize=%lld, mmapSizeActual=%lld, mmapSizeMax=%lld\n", + "mmapSize=%lld, mmapSizeMax=%lld\n", osGetCurrentProcessId(), pFile, pFile->hMap, pFile->pMapRegion, - pFile->mmapSize, pFile->mmapSizeActual, pFile->mmapSizeMax)); + pFile->mmapSize, pFile->mmapSizeMax)); if( pFile->pMapRegion ){ if( !osUnmapViewOfFile(pFile->pMapRegion) ){ pFile->lastErrno = osGetLastError(); @@ -43985,7 +50173,6 @@ static int winUnmapfile(winFile *pFile){ } pFile->pMapRegion = 0; pFile->mmapSize = 0; - pFile->mmapSizeActual = 0; } if( pFile->hMap!=NULL ){ if( !osCloseHandle(pFile->hMap) ){ @@ -44096,7 +50283,6 @@ static int winMapfile(winFile *pFd, sqlite3_int64 nByte){ } pFd->pMapRegion = pNew; pFd->mmapSize = nMap; - pFd->mmapSizeActual = nMap; } OSTRACE(("MAP-FILE pid=%lu, pFile=%p, rc=SQLITE_OK\n", @@ -44137,6 +50323,7 @@ static int winFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ } } if( pFd->mmapSize >= iOff+nAmt ){ + assert( pFd->pMapRegion!=0 ); *pp = &((u8 *)pFd->pMapRegion)[iOff]; pFd->nFetchOut++; } @@ -44330,6 +50517,19 @@ static int winMakeEndInDirSep(int nBuf, char *zBuf){ return 0; } +/* +** If sqlite3_temp_directory is defined, take the mutex and return true. +** +** If sqlite3_temp_directory is NULL (undefined), omit the mutex and +** return false. +*/ +static int winTempDirDefined(void){ + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); + if( sqlite3_temp_directory!=0 ) return 1; + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); + return 0; +} + /* ** Create a temporary file name and store the resulting pointer into pzBuf. ** The pointer returned in pzBuf must be freed via sqlite3_free(). @@ -44340,6 +50540,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789"; size_t i, j; + DWORD pid; int nPre = sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX); int nMax, nBuf, nDir, nLen; char *zBuf; @@ -44366,20 +50567,23 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ */ nDir = nMax - (nPre + 15); assert( nDir>0 ); - if( sqlite3_temp_directory ){ + if( winTempDirDefined() ){ int nDirLen = sqlite3Strlen30(sqlite3_temp_directory); if( nDirLen>0 ){ if( !winIsDirSep(sqlite3_temp_directory[nDirLen-1]) ){ nDirLen++; } if( nDirLen>nDir ){ + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_ERROR\n")); return winLogError(SQLITE_ERROR, 0, "winGetTempname1", 0); } sqlite3_snprintf(nMax, zBuf, "%s", sqlite3_temp_directory); } + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); } + #if defined(__CYGWIN__) else{ static const char *azDirs[] = { @@ -44549,7 +50753,10 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ j = sqlite3Strlen30(zBuf); sqlite3_randomness(15, &zBuf[j]); + pid = osGetCurrentProcessId(); for(i=0; i<15; i++, j++){ + zBuf[j] += pid & 0xff; + pid >>= 8; zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; } zBuf[j] = 0; @@ -44640,7 +50847,7 @@ static int winOpen( #ifndef NDEBUG int isOpenJournal = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL + eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_WAL )); @@ -44661,17 +50868,17 @@ static int winOpen( assert(isExclusive==0 || isCreate); assert(isDelete==0 || isCreate); - /* The main DB, main journal, WAL file and master journal are never + /* The main DB, main journal, WAL file and super-journal are never ** automatically deleted. Nor are they ever temporary files. */ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); + assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL ); assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); /* Assert that the upper layer has set one of the "file-type" flags. */ assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL + || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL ); @@ -44743,7 +50950,11 @@ static int winOpen( dwCreationDisposition = OPEN_EXISTING; } - dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE; + if( 0==sqlite3_uri_boolean(zName, "exclusive", 0) ){ + dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE; + }else{ + dwShareMode = 0; + } if( isDelete ){ #if SQLITE_OS_WINCE @@ -44783,7 +50994,7 @@ static int winOpen( if( isReadWrite ){ int rc2, isRO = 0; sqlite3BeginBenignMalloc(); - rc2 = winAccess(pVfs, zName, SQLITE_ACCESS_READ, &isRO); + rc2 = winAccess(pVfs, zUtf8Name, SQLITE_ACCESS_READ, &isRO); sqlite3EndBenignMalloc(); if( rc2==SQLITE_OK && isRO ) break; } @@ -44800,7 +51011,7 @@ static int winOpen( if( isReadWrite ){ int rc2, isRO = 0; sqlite3BeginBenignMalloc(); - rc2 = winAccess(pVfs, zName, SQLITE_ACCESS_READ, &isRO); + rc2 = winAccess(pVfs, zUtf8Name, SQLITE_ACCESS_READ, &isRO); sqlite3EndBenignMalloc(); if( rc2==SQLITE_OK && isRO ) break; } @@ -44820,7 +51031,7 @@ static int winOpen( if( isReadWrite ){ int rc2, isRO = 0; sqlite3BeginBenignMalloc(); - rc2 = winAccess(pVfs, zName, SQLITE_ACCESS_READ, &isRO); + rc2 = winAccess(pVfs, zUtf8Name, SQLITE_ACCESS_READ, &isRO); sqlite3EndBenignMalloc(); if( rc2==SQLITE_OK && isRO ) break; } @@ -44883,13 +51094,15 @@ static int winOpen( } sqlite3_free(zTmpname); - pFile->pMethod = pAppData ? pAppData->pMethod : &winIoMethod; + id->pMethods = pAppData ? pAppData->pMethod : &winIoMethod; pFile->pVfs = pVfs; pFile->h = h; if( isReadonly ){ pFile->ctrlFlags |= WINFILE_RDONLY; } - if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){ + if( (flags & SQLITE_OPEN_MAIN_DB) + && sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) + ){ pFile->ctrlFlags |= WINFILE_PSOW; } pFile->lastErrno = NO_ERROR; @@ -44898,7 +51111,6 @@ static int winOpen( pFile->hMap = NULL; pFile->pMapRegion = 0; pFile->mmapSize = 0; - pFile->mmapSizeActual = 0; pFile->mmapSizeMax = sqlite3GlobalConfig.szMmap; #endif @@ -45042,6 +51254,13 @@ static int winAccess( OSTRACE(("ACCESS name=%s, flags=%x, pResOut=%p\n", zFilename, flags, pResOut)); + if( zFilename==0 ){ + *pResOut = 0; + OSTRACE(("ACCESS name=%s, pResOut=%p, *pResOut=%d, rc=SQLITE_OK\n", + zFilename, pResOut, *pResOut)); + return SQLITE_OK; + } + zConverted = winConvertFromUtf8Filename(zFilename); if( zConverted==0 ){ OSTRACE(("ACCESS name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename)); @@ -45100,6 +51319,17 @@ static int winAccess( return SQLITE_OK; } +/* +** Returns non-zero if the specified path name starts with the "long path" +** prefix. +*/ +static BOOL winIsLongPathPrefix( + const char *zPathname +){ + return ( zPathname[0]=='\\' && zPathname[1]=='\\' + && zPathname[2]=='?' && zPathname[3]=='\\' ); +} + /* ** Returns non-zero if the specified path name starts with a drive letter ** followed by a colon character. @@ -45152,7 +51382,7 @@ static BOOL winIsVerbatimPathname( ** pathname into zOut[]. zOut[] will be at least pVfs->mxPathname ** bytes in size. */ -static int winFullPathname( +static int winFullPathnameNoMutex( sqlite3_vfs *pVfs, /* Pointer to vfs object */ const char *zRelative, /* Possibly relative input path */ int nFull, /* Size of output buffer in bytes */ @@ -45164,10 +51394,11 @@ static int winFullPathname( char *zOut; #endif - /* If this path name begins with "/X:", where "X" is any alphabetic - ** character, discard the initial "/" from the pathname. + /* If this path name begins with "/X:" or "\\?\", where "X" is any + ** alphabetic character, discard the initial "/" from the pathname. */ - if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){ + if( zRelative[0]=='/' && (winIsDriveLetterAndColon(zRelative+1) + || winIsLongPathPrefix(zRelative+1)) ){ zRelative++; } @@ -45330,6 +51561,20 @@ static int winFullPathname( } #endif } +static int winFullPathname( + sqlite3_vfs *pVfs, /* Pointer to vfs object */ + const char *zRelative, /* Possibly relative input path */ + int nFull, /* Size of output buffer in bytes */ + char *zFull /* Output buffer */ +){ + int rc; + MUTEX_LOGIC( sqlite3_mutex *pMutex; ) + MUTEX_LOGIC( pMutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR); ) + sqlite3_mutex_enter(pMutex); + rc = winFullPathnameNoMutex(pVfs, zRelative, nFull, zFull); + sqlite3_mutex_leave(pMutex); + return rc; +} #ifndef SQLITE_OMIT_LOAD_EXTENSION /* @@ -45773,31 +52018,89 @@ SQLITE_API int sqlite3_os_end(void){ ** This file also implements interface sqlite3_serialize() and ** sqlite3_deserialize(). */ -#ifdef SQLITE_ENABLE_DESERIALIZE /* #include "sqliteInt.h" */ +#ifndef SQLITE_OMIT_DESERIALIZE /* ** Forward declaration of objects used by this utility */ typedef struct sqlite3_vfs MemVfs; typedef struct MemFile MemFile; +typedef struct MemStore MemStore; /* Access to a lower-level VFS that (might) implement dynamic loading, ** access to randomness, etc. */ #define ORIGVFS(p) ((sqlite3_vfs*)((p)->pAppData)) +/* Storage for a memdb file. +** +** An memdb object can be shared or separate. Shared memdb objects can be +** used by more than one database connection. Mutexes are used by shared +** memdb objects to coordinate access. Separate memdb objects are only +** connected to a single database connection and do not require additional +** mutexes. +** +** Shared memdb objects have .zFName!=0 and .pMutex!=0. They are created +** using "file:/name?vfs=memdb". The first character of the name must be +** "/" or else the object will be a separate memdb object. All shared +** memdb objects are stored in memdb_g.apMemStore[] in an arbitrary order. +** +** Separate memdb objects are created using a name that does not begin +** with "/" or using sqlite3_deserialize(). +** +** Access rules for shared MemStore objects: +** +** * .zFName is initialized when the object is created and afterwards +** is unchanged until the object is destroyed. So it can be accessed +** at any time as long as we know the object is not being destroyed, +** which means while either the SQLITE_MUTEX_STATIC_VFS1 or +** .pMutex is held or the object is not part of memdb_g.apMemStore[]. +** +** * Can .pMutex can only be changed while holding the +** SQLITE_MUTEX_STATIC_VFS1 mutex or while the object is not part +** of memdb_g.apMemStore[]. +** +** * Other fields can only be changed while holding the .pMutex mutex +** or when the .nRef is less than zero and the object is not part of +** memdb_g.apMemStore[]. +** +** * The .aData pointer has the added requirement that it can can only +** be changed (for resizing) when nMmap is zero. +** +*/ +struct MemStore { + sqlite3_int64 sz; /* Size of the file */ + sqlite3_int64 szAlloc; /* Space allocated to aData */ + sqlite3_int64 szMax; /* Maximum allowed size of the file */ + unsigned char *aData; /* content of the file */ + sqlite3_mutex *pMutex; /* Used by shared stores only */ + int nMmap; /* Number of memory mapped pages */ + unsigned mFlags; /* Flags */ + int nRdLock; /* Number of readers */ + int nWrLock; /* Number of writers. (Always 0 or 1) */ + int nRef; /* Number of users of this MemStore */ + char *zFName; /* The filename for shared stores */ +}; + /* An open file */ struct MemFile { sqlite3_file base; /* IO methods */ - sqlite3_int64 sz; /* Size of the file */ - sqlite3_int64 szMax; /* Space allocated to aData */ - unsigned char *aData; /* content of the file */ - int nMmap; /* Number of memory mapped pages */ - unsigned mFlags; /* Flags */ + MemStore *pStore; /* The storage */ int eLock; /* Most recent lock against this file */ }; +/* +** File-scope variables for holding the memdb files that are accessible +** to multiple database connections in separate threads. +** +** Must hold SQLITE_MUTEX_STATIC_VFS1 to access any part of this object. +*/ +static struct MemFS { + int nMemStore; /* Number of shared MemStore objects */ + MemStore **apMemStore; /* Array of all shared MemStore objects */ +} memdb_g; + /* ** Methods for MemFile */ @@ -45808,6 +52111,7 @@ static int memdbTruncate(sqlite3_file*, sqlite3_int64 size); static int memdbSync(sqlite3_file*, int flags); static int memdbFileSize(sqlite3_file*, sqlite3_int64 *pSize); static int memdbLock(sqlite3_file*, int); +static int memdbUnlock(sqlite3_file*, int); /* static int memdbCheckReservedLock(sqlite3_file*, int *pResOut);// not used */ static int memdbFileControl(sqlite3_file*, int op, void *pArg); /* static int memdbSectorSize(sqlite3_file*); // not used */ @@ -45838,7 +52142,7 @@ static sqlite3_vfs memdb_vfs = { 1024, /* mxPathname */ 0, /* pNext */ "memdb", /* zName */ - 0, /* pAppData (set when registered) */ + 0, /* pAppData (set when registered) */ memdbOpen, /* xOpen */ 0, /* memdbDelete, */ /* xDelete */ memdbAccess, /* xAccess */ @@ -45851,7 +52155,10 @@ static sqlite3_vfs memdb_vfs = { memdbSleep, /* xSleep */ 0, /* memdbCurrentTime, */ /* xCurrentTime */ memdbGetLastError, /* xGetLastError */ - memdbCurrentTimeInt64 /* xCurrentTimeInt64 */ + memdbCurrentTimeInt64, /* xCurrentTimeInt64 */ + 0, /* xSetSystemCall */ + 0, /* xGetSystemCall */ + 0, /* xNextSystemCall */ }; static const sqlite3_io_methods memdb_io_methods = { @@ -45863,7 +52170,7 @@ static const sqlite3_io_methods memdb_io_methods = { memdbSync, /* xSync */ memdbFileSize, /* xFileSize */ memdbLock, /* xLock */ - memdbLock, /* xUnlock - same as xLock in this case */ + memdbUnlock, /* xUnlock */ 0, /* memdbCheckReservedLock, */ /* xCheckReservedLock */ memdbFileControl, /* xFileControl */ 0, /* memdbSectorSize,*/ /* xSectorSize */ @@ -45876,17 +52183,68 @@ static const sqlite3_io_methods memdb_io_methods = { memdbUnfetch /* xUnfetch */ }; +/* +** Enter/leave the mutex on a MemStore +*/ +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE==0 +static void memdbEnter(MemStore *p){ + UNUSED_PARAMETER(p); +} +static void memdbLeave(MemStore *p){ + UNUSED_PARAMETER(p); +} +#else +static void memdbEnter(MemStore *p){ + sqlite3_mutex_enter(p->pMutex); +} +static void memdbLeave(MemStore *p){ + sqlite3_mutex_leave(p->pMutex); +} +#endif + /* ** Close an memdb-file. -** -** The pData pointer is owned by the application, so there is nothing -** to free. +** Free the underlying MemStore object when its refcount drops to zero +** or less. */ static int memdbClose(sqlite3_file *pFile){ - MemFile *p = (MemFile *)pFile; - if( p->mFlags & SQLITE_DESERIALIZE_FREEONCLOSE ) sqlite3_free(p->aData); + MemStore *p = ((MemFile*)pFile)->pStore; + if( p->zFName ){ + int i; +#ifndef SQLITE_MUTEX_OMIT + sqlite3_mutex *pVfsMutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1); +#endif + sqlite3_mutex_enter(pVfsMutex); + for(i=0; ALWAYS(inRef==1 ){ + memdb_g.apMemStore[i] = memdb_g.apMemStore[--memdb_g.nMemStore]; + if( memdb_g.nMemStore==0 ){ + sqlite3_free(memdb_g.apMemStore); + memdb_g.apMemStore = 0; + } + } + break; + } + } + sqlite3_mutex_leave(pVfsMutex); + }else{ + memdbEnter(p); + } + p->nRef--; + if( p->nRef<=0 ){ + if( p->mFlags & SQLITE_DESERIALIZE_FREEONCLOSE ){ + sqlite3_free(p->aData); + } + memdbLeave(p); + sqlite3_mutex_free(p->pMutex); + sqlite3_free(p); + }else{ + memdbLeave(p); + } return SQLITE_OK; } @@ -45894,33 +52252,41 @@ static int memdbClose(sqlite3_file *pFile){ ** Read data from an memdb-file. */ static int memdbRead( - sqlite3_file *pFile, - void *zBuf, - int iAmt, + sqlite3_file *pFile, + void *zBuf, + int iAmt, sqlite_int64 iOfst ){ - MemFile *p = (MemFile *)pFile; + MemStore *p = ((MemFile*)pFile)->pStore; + memdbEnter(p); if( iOfst+iAmt>p->sz ){ memset(zBuf, 0, iAmt); if( iOfstsz ) memcpy(zBuf, p->aData+iOfst, p->sz - iOfst); + memdbLeave(p); return SQLITE_IOERR_SHORT_READ; } memcpy(zBuf, p->aData+iOfst, iAmt); + memdbLeave(p); return SQLITE_OK; } /* ** Try to enlarge the memory allocation to hold at least sz bytes */ -static int memdbEnlarge(MemFile *p, sqlite3_int64 newSz){ +static int memdbEnlarge(MemStore *p, sqlite3_int64 newSz){ unsigned char *pNew; - if( (p->mFlags & SQLITE_DESERIALIZE_RESIZEABLE)==0 || p->nMmap>0 ){ + if( (p->mFlags & SQLITE_DESERIALIZE_RESIZEABLE)==0 || NEVER(p->nMmap>0) ){ return SQLITE_FULL; } - pNew = sqlite3_realloc64(p->aData, newSz); - if( pNew==0 ) return SQLITE_NOMEM; + if( newSz>p->szMax ){ + return SQLITE_FULL; + } + newSz *= 2; + if( newSz>p->szMax ) newSz = p->szMax; + pNew = sqlite3Realloc(p->aData, newSz); + if( pNew==0 ) return SQLITE_IOERR_NOMEM; p->aData = pNew; - p->szMax = newSz; + p->szAlloc = newSz; return SQLITE_OK; } @@ -45933,18 +52299,27 @@ static int memdbWrite( int iAmt, sqlite_int64 iOfst ){ - MemFile *p = (MemFile *)pFile; + MemStore *p = ((MemFile*)pFile)->pStore; + memdbEnter(p); + if( NEVER(p->mFlags & SQLITE_DESERIALIZE_READONLY) ){ + /* Can't happen: memdbLock() will return SQLITE_READONLY before + ** reaching this point */ + memdbLeave(p); + return SQLITE_IOERR_WRITE; + } if( iOfst+iAmt>p->sz ){ int rc; - if( iOfst+iAmt>p->szMax - && (rc = memdbEnlarge(p, (iOfst+iAmt)*2))!=SQLITE_OK + if( iOfst+iAmt>p->szAlloc + && (rc = memdbEnlarge(p, iOfst+iAmt))!=SQLITE_OK ){ + memdbLeave(p); return rc; } if( iOfst>p->sz ) memset(p->aData+p->sz, 0, iOfst-p->sz); p->sz = iOfst+iAmt; } memcpy(p->aData+iOfst, z, iAmt); + memdbLeave(p); return SQLITE_OK; } @@ -45956,16 +52331,25 @@ static int memdbWrite( ** the size of a file, never to increase the size. */ static int memdbTruncate(sqlite3_file *pFile, sqlite_int64 size){ - MemFile *p = (MemFile *)pFile; - if( NEVER(size>p->sz) ) return SQLITE_FULL; - p->sz = size; - return SQLITE_OK; + MemStore *p = ((MemFile*)pFile)->pStore; + int rc = SQLITE_OK; + memdbEnter(p); + if( size>p->sz ){ + /* This can only happen with a corrupt wal mode db */ + rc = SQLITE_CORRUPT; + }else{ + p->sz = size; + } + memdbLeave(p); + return rc; } /* ** Sync an memdb-file. */ static int memdbSync(sqlite3_file *pFile, int flags){ + UNUSED_PARAMETER(pFile); + UNUSED_PARAMETER(flags); return SQLITE_OK; } @@ -45973,8 +52357,10 @@ static int memdbSync(sqlite3_file *pFile, int flags){ ** Return the current file-size of an memdb-file. */ static int memdbFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ - MemFile *p = (MemFile *)pFile; + MemStore *p = ((MemFile*)pFile)->pStore; + memdbEnter(p); *pSize = p->sz; + memdbLeave(p); return SQLITE_OK; } @@ -45982,14 +52368,90 @@ static int memdbFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ ** Lock an memdb-file. */ static int memdbLock(sqlite3_file *pFile, int eLock){ - MemFile *p = (MemFile *)pFile; - p->eLock = eLock; + MemFile *pThis = (MemFile*)pFile; + MemStore *p = pThis->pStore; + int rc = SQLITE_OK; + if( eLock<=pThis->eLock ) return SQLITE_OK; + memdbEnter(p); + + assert( p->nWrLock==0 || p->nWrLock==1 ); + assert( pThis->eLock<=SQLITE_LOCK_SHARED || p->nWrLock==1 ); + assert( pThis->eLock==SQLITE_LOCK_NONE || p->nRdLock>=1 ); + + if( eLock>SQLITE_LOCK_SHARED && (p->mFlags & SQLITE_DESERIALIZE_READONLY) ){ + rc = SQLITE_READONLY; + }else{ + switch( eLock ){ + case SQLITE_LOCK_SHARED: { + assert( pThis->eLock==SQLITE_LOCK_NONE ); + if( p->nWrLock>0 ){ + rc = SQLITE_BUSY; + }else{ + p->nRdLock++; + } + break; + }; + + case SQLITE_LOCK_RESERVED: + case SQLITE_LOCK_PENDING: { + assert( pThis->eLock>=SQLITE_LOCK_SHARED ); + if( ALWAYS(pThis->eLock==SQLITE_LOCK_SHARED) ){ + if( p->nWrLock>0 ){ + rc = SQLITE_BUSY; + }else{ + p->nWrLock = 1; + } + } + break; + } + + default: { + assert( eLock==SQLITE_LOCK_EXCLUSIVE ); + assert( pThis->eLock>=SQLITE_LOCK_SHARED ); + if( p->nRdLock>1 ){ + rc = SQLITE_BUSY; + }else if( pThis->eLock==SQLITE_LOCK_SHARED ){ + p->nWrLock = 1; + } + break; + } + } + } + if( rc==SQLITE_OK ) pThis->eLock = eLock; + memdbLeave(p); + return rc; +} + +/* +** Unlock an memdb-file. +*/ +static int memdbUnlock(sqlite3_file *pFile, int eLock){ + MemFile *pThis = (MemFile*)pFile; + MemStore *p = pThis->pStore; + if( eLock>=pThis->eLock ) return SQLITE_OK; + memdbEnter(p); + + assert( eLock==SQLITE_LOCK_SHARED || eLock==SQLITE_LOCK_NONE ); + if( eLock==SQLITE_LOCK_SHARED ){ + if( ALWAYS(pThis->eLock>SQLITE_LOCK_SHARED) ){ + p->nWrLock--; + } + }else{ + if( pThis->eLock>SQLITE_LOCK_SHARED ){ + p->nWrLock--; + } + p->nRdLock--; + } + + pThis->eLock = eLock; + memdbLeave(p); return SQLITE_OK; } -#if 0 /* Never used because memdbAccess() always returns false */ +#if 0 /* -** Check if another file-handle holds a RESERVED lock on an memdb-file. +** This interface is only used for crash recovery, which does not +** occur on an in-memory database. */ static int memdbCheckReservedLock(sqlite3_file *pFile, int *pResOut){ *pResOut = 0; @@ -45997,16 +52459,32 @@ static int memdbCheckReservedLock(sqlite3_file *pFile, int *pResOut){ } #endif + /* ** File control method. For custom operations on an memdb-file. */ static int memdbFileControl(sqlite3_file *pFile, int op, void *pArg){ - MemFile *p = (MemFile *)pFile; + MemStore *p = ((MemFile*)pFile)->pStore; int rc = SQLITE_NOTFOUND; + memdbEnter(p); if( op==SQLITE_FCNTL_VFSNAME ){ *(char**)pArg = sqlite3_mprintf("memdb(%p,%lld)", p->aData, p->sz); rc = SQLITE_OK; } + if( op==SQLITE_FCNTL_SIZE_LIMIT ){ + sqlite3_int64 iLimit = *(sqlite3_int64*)pArg; + if( iLimitsz ){ + if( iLimit<0 ){ + iLimit = p->szMax; + }else{ + iLimit = p->sz; + } + } + p->szMax = iLimit; + *(sqlite3_int64*)pArg = iLimit; + rc = SQLITE_OK; + } + memdbLeave(p); return rc; } @@ -46023,7 +52501,8 @@ static int memdbSectorSize(sqlite3_file *pFile){ ** Return the device characteristic flags supported by an memdb-file. */ static int memdbDeviceCharacteristics(sqlite3_file *pFile){ - return SQLITE_IOCAP_ATOMIC | + UNUSED_PARAMETER(pFile); + return SQLITE_IOCAP_ATOMIC | SQLITE_IOCAP_POWERSAFE_OVERWRITE | SQLITE_IOCAP_SAFE_APPEND | SQLITE_IOCAP_SEQUENTIAL; @@ -46036,16 +52515,26 @@ static int memdbFetch( int iAmt, void **pp ){ - MemFile *p = (MemFile *)pFile; - p->nMmap++; - *pp = (void*)(p->aData + iOfst); + MemStore *p = ((MemFile*)pFile)->pStore; + memdbEnter(p); + if( iOfst+iAmt>p->sz || (p->mFlags & SQLITE_DESERIALIZE_RESIZEABLE)!=0 ){ + *pp = 0; + }else{ + p->nMmap++; + *pp = (void*)(p->aData + iOfst); + } + memdbLeave(p); return SQLITE_OK; } /* Release a memory-mapped page */ static int memdbUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){ - MemFile *p = (MemFile *)pFile; + MemStore *p = ((MemFile*)pFile)->pStore; + UNUSED_PARAMETER(iOfst); + UNUSED_PARAMETER(pPage); + memdbEnter(p); p->nMmap--; + memdbLeave(p); return SQLITE_OK; } @@ -46055,23 +52544,83 @@ static int memdbUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){ static int memdbOpen( sqlite3_vfs *pVfs, const char *zName, - sqlite3_file *pFile, + sqlite3_file *pFd, int flags, int *pOutFlags ){ - MemFile *p = (MemFile*)pFile; - if( (flags & SQLITE_OPEN_MAIN_DB)==0 ){ - return ORIGVFS(pVfs)->xOpen(ORIGVFS(pVfs), zName, pFile, flags, pOutFlags); + MemFile *pFile = (MemFile*)pFd; + MemStore *p = 0; + int szName; + UNUSED_PARAMETER(pVfs); + + memset(pFile, 0, sizeof(*pFile)); + szName = sqlite3Strlen30(zName); + if( szName>1 && (zName[0]=='/' || zName[0]=='\\') ){ + int i; +#ifndef SQLITE_MUTEX_OMIT + sqlite3_mutex *pVfsMutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1); +#endif + sqlite3_mutex_enter(pVfsMutex); + for(i=0; izFName,zName)==0 ){ + p = memdb_g.apMemStore[i]; + break; + } + } + if( p==0 ){ + MemStore **apNew; + p = sqlite3Malloc( sizeof(*p) + szName + 3 ); + if( p==0 ){ + sqlite3_mutex_leave(pVfsMutex); + return SQLITE_NOMEM; + } + apNew = sqlite3Realloc(memdb_g.apMemStore, + sizeof(apNew[0])*(memdb_g.nMemStore+1) ); + if( apNew==0 ){ + sqlite3_free(p); + sqlite3_mutex_leave(pVfsMutex); + return SQLITE_NOMEM; + } + apNew[memdb_g.nMemStore++] = p; + memdb_g.apMemStore = apNew; + memset(p, 0, sizeof(*p)); + p->mFlags = SQLITE_DESERIALIZE_RESIZEABLE|SQLITE_DESERIALIZE_FREEONCLOSE; + p->szMax = sqlite3GlobalConfig.mxMemdbSize; + p->zFName = (char*)&p[1]; + memcpy(p->zFName, zName, szName+1); + p->pMutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); + if( p->pMutex==0 ){ + memdb_g.nMemStore--; + sqlite3_free(p); + sqlite3_mutex_leave(pVfsMutex); + return SQLITE_NOMEM; + } + p->nRef = 1; + memdbEnter(p); + }else{ + memdbEnter(p); + p->nRef++; + } + sqlite3_mutex_leave(pVfsMutex); + }else{ + p = sqlite3Malloc( sizeof(*p) ); + if( p==0 ){ + return SQLITE_NOMEM; + } + memset(p, 0, sizeof(*p)); + p->mFlags = SQLITE_DESERIALIZE_RESIZEABLE | SQLITE_DESERIALIZE_FREEONCLOSE; + p->szMax = sqlite3GlobalConfig.mxMemdbSize; } - memset(p, 0, sizeof(*p)); - p->mFlags = SQLITE_DESERIALIZE_RESIZEABLE | SQLITE_DESERIALIZE_FREEONCLOSE; - assert( pOutFlags!=0 ); /* True because flags==SQLITE_OPEN_MAIN_DB */ - *pOutFlags = flags | SQLITE_OPEN_MEMORY; - p->base.pMethods = &memdb_io_methods; + pFile->pStore = p; + if( pOutFlags!=0 ){ + *pOutFlags = flags | SQLITE_OPEN_MEMORY; + } + pFd->pMethods = &memdb_io_methods; + memdbLeave(p); return SQLITE_OK; } -#if 0 /* Only used to delete rollback journals, master journals, and WAL +#if 0 /* Only used to delete rollback journals, super-journals, and WAL ** files, none of which exist in memdb. So this routine is never used */ /* ** Delete the file located at zPath. If the dirSync argument is true, @@ -46090,11 +52639,14 @@ static int memdbDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ ** With memdb, no files ever exist on disk. So always return false. */ static int memdbAccess( - sqlite3_vfs *pVfs, - const char *zPath, - int flags, + sqlite3_vfs *pVfs, + const char *zPath, + int flags, int *pResOut ){ + UNUSED_PARAMETER(pVfs); + UNUSED_PARAMETER(zPath); + UNUSED_PARAMETER(flags); *pResOut = 0; return SQLITE_OK; } @@ -46105,11 +52657,12 @@ static int memdbAccess( ** of at least (INST_MAX_PATHNAME+1) bytes. */ static int memdbFullPathname( - sqlite3_vfs *pVfs, - const char *zPath, - int nOut, + sqlite3_vfs *pVfs, + const char *zPath, + int nOut, char *zOut ){ + UNUSED_PARAMETER(pVfs); sqlite3_snprintf(nOut, zOut, "%s", zPath); return SQLITE_OK; } @@ -46123,7 +52676,7 @@ static void *memdbDlOpen(sqlite3_vfs *pVfs, const char *zPath){ /* ** Populate the buffer zErrMsg (size nByte bytes) with a human readable -** utf-8 string describing the most recent error encountered associated +** utf-8 string describing the most recent error encountered associated ** with dynamic libraries. */ static void memdbDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ @@ -46145,7 +52698,7 @@ static void memdbDlClose(sqlite3_vfs *pVfs, void *pHandle){ } /* -** Populate the buffer pointed to by zBufOut with nByte bytes of +** Populate the buffer pointed to by zBufOut with nByte bytes of ** random data. */ static int memdbRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ @@ -46153,7 +52706,7 @@ static int memdbRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ } /* -** Sleep for nMicro microseconds. Return the number of microseconds +** Sleep for nMicro microseconds. Return the number of microseconds ** actually slept. */ static int memdbSleep(sqlite3_vfs *pVfs, int nMicro){ @@ -46182,9 +52735,14 @@ static int memdbCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){ */ static MemFile *memdbFromDbSchema(sqlite3 *db, const char *zSchema){ MemFile *p = 0; + MemStore *pStore; int rc = sqlite3_file_control(db, zSchema, SQLITE_FCNTL_FILE_POINTER, &p); if( rc ) return 0; if( p->base.pMethods!=&memdb_io_methods ) return 0; + pStore = p->pStore; + memdbEnter(pStore); + if( pStore->zFName!=0 ) p = 0; + memdbLeave(pStore); return p; } @@ -46220,12 +52778,14 @@ SQLITE_API unsigned char *sqlite3_serialize( if( piSize ) *piSize = -1; if( iDb<0 ) return 0; if( p ){ - if( piSize ) *piSize = p->sz; + MemStore *pStore = p->pStore; + assert( pStore->pMutex==0 ); + if( piSize ) *piSize = pStore->sz; if( mFlags & SQLITE_SERIALIZE_NOCOPY ){ - pOut = p->aData; + pOut = pStore->aData; }else{ - pOut = sqlite3_malloc64( p->sz ); - if( pOut ) memcpy(pOut, p->aData, p->sz); + pOut = sqlite3_malloc64( pStore->sz ); + if( pOut ) memcpy(pOut, pStore->aData, pStore->sz); } return pOut; } @@ -46259,7 +52819,7 @@ SQLITE_API unsigned char *sqlite3_serialize( }else{ memset(pTo, 0, szPage); } - sqlite3PagerUnref(pPage); + sqlite3PagerUnref(pPage); } } } @@ -46295,13 +52855,18 @@ SQLITE_API int sqlite3_deserialize( sqlite3_mutex_enter(db->mutex); if( zSchema==0 ) zSchema = db->aDb[0].zDbSName; iDb = sqlite3FindDbName(db, zSchema); - if( iDb<0 ){ + testcase( iDb==1 ); + if( iDb<2 && iDb!=0 ){ rc = SQLITE_ERROR; goto end_deserialize; - } + } zSql = sqlite3_mprintf("ATTACH x AS %Q", zSchema); - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - sqlite3_free(zSql); + if( zSql==0 ){ + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); + sqlite3_free(zSql); + } if( rc ) goto end_deserialize; db->init.iDb = (u8)iDb; db->init.reopenMemdb = 1; @@ -46315,35 +52880,54 @@ SQLITE_API int sqlite3_deserialize( if( p==0 ){ rc = SQLITE_ERROR; }else{ - p->aData = pData; - p->sz = szDb; - p->szMax = szBuf; - p->mFlags = mFlags; + MemStore *pStore = p->pStore; + pStore->aData = pData; + pData = 0; + pStore->sz = szDb; + pStore->szAlloc = szBuf; + pStore->szMax = szBuf; + if( pStore->szMaxszMax = sqlite3GlobalConfig.mxMemdbSize; + } + pStore->mFlags = mFlags; rc = SQLITE_OK; } end_deserialize: sqlite3_finalize(pStmt); + if( pData && (mFlags & SQLITE_DESERIALIZE_FREEONCLOSE)!=0 ){ + sqlite3_free(pData); + } sqlite3_mutex_leave(db->mutex); return rc; } -/* +/* +** Return true if the VFS is the memvfs. +*/ +SQLITE_PRIVATE int sqlite3IsMemdb(const sqlite3_vfs *pVfs){ + return pVfs==&memdb_vfs; +} + +/* ** This routine is called when the extension is loaded. ** Register the new VFS. */ SQLITE_PRIVATE int sqlite3MemdbInit(void){ sqlite3_vfs *pLower = sqlite3_vfs_find(0); - int sz = pLower->szOsFile; + unsigned int sz; + if( NEVER(pLower==0) ) return SQLITE_ERROR; + sz = pLower->szOsFile; memdb_vfs.pAppData = pLower; - /* In all known configurations of SQLite, the size of a default - ** sqlite3_file is greater than the size of a memdb sqlite3_file. - ** Should that ever change, remove the following NEVER() */ - if( NEVER(szu.aHash[h] ){ if (p->nSet<(BITVEC_NINT-1)) { goto bitvec_set_end; @@ -46702,7 +53286,7 @@ SQLITE_PRIVATE int sqlite3BitvecBuiltinTest(int sz, int *aOp){ sqlite3BitvecClear(0, 1, pTmpSpace); /* Run the program */ - pc = 0; + pc = i = 0; while( (op = aOp[pc])!=0 ){ switch( op ){ case 1: @@ -46714,7 +53298,7 @@ SQLITE_PRIVATE int sqlite3BitvecBuiltinTest(int sz, int *aOp){ break; } case 3: - case 4: + case 4: default: { nx = 2; sqlite3_randomness(sizeof(i), &i); @@ -46794,8 +53378,8 @@ bitvec_end: ** ** The PCache.pSynced variable is used to optimize searching for a dirty ** page to eject from the cache mid-transaction. It is better to eject -** a page that does not require a journal sync than one that does. -** Therefore, pSynced is maintained to that it *almost* always points +** a page that does not require a journal sync than one that does. +** Therefore, pSynced is maintained so that it *almost* always points ** to either the oldest page in the pDirty/pDirtyTail list that has a ** clear PGHDR_NEED_SYNC flag or to a page that is older than this one ** (so that the right page to eject can be found by following pDirtyPrev @@ -46804,7 +53388,7 @@ bitvec_end: struct PCache { PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */ PgHdr *pSynced; /* Last synced page in dirty page list */ - int nRefSum; /* Sum of ref counts over all pages */ + i64 nRefSum; /* Sum of ref counts over all pages */ int szCache; /* Configured cache size */ int szSpill; /* Size before spilling occurs */ int szPage; /* Size of every page in this cache */ @@ -46829,35 +53413,67 @@ struct PCache { int sqlite3PcacheTrace = 2; /* 0: off 1: simple 2: cache dumps */ int sqlite3PcacheMxDump = 9999; /* Max cache entries for pcacheDump() */ # define pcacheTrace(X) if(sqlite3PcacheTrace){sqlite3DebugPrintf X;} - void pcacheDump(PCache *pCache){ - int N; - int i, j; - sqlite3_pcache_page *pLower; + static void pcachePageTrace(int i, sqlite3_pcache_page *pLower){ PgHdr *pPg; unsigned char *a; - + int j; + if( pLower==0 ){ + printf("%3d: NULL\n", i); + }else{ + pPg = (PgHdr*)pLower->pExtra; + printf("%3d: nRef %2lld flgs %02x data ", i, pPg->nRef, pPg->flags); + a = (unsigned char *)pLower->pBuf; + for(j=0; j<12; j++) printf("%02x", a[j]); + printf(" ptr %p\n", pPg); + } + } + static void pcacheDump(PCache *pCache){ + int N; + int i; + sqlite3_pcache_page *pLower; + if( sqlite3PcacheTrace<2 ) return; if( pCache->pCache==0 ) return; N = sqlite3PcachePagecount(pCache); if( N>sqlite3PcacheMxDump ) N = sqlite3PcacheMxDump; for(i=1; i<=N; i++){ pLower = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, i, 0); - if( pLower==0 ) continue; - pPg = (PgHdr*)pLower->pExtra; - printf("%3d: nRef %2d flgs %02x data ", i, pPg->nRef, pPg->flags); - a = (unsigned char *)pLower->pBuf; - for(j=0; j<12; j++) printf("%02x", a[j]); - printf("\n"); - if( pPg->pPage==0 ){ + pcachePageTrace(i, pLower); + if( pLower && ((PgHdr*)pLower)->pPage==0 ){ sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, pLower, 0); } } } - #else +#else # define pcacheTrace(X) +# define pcachePageTrace(PGNO, X) # define pcacheDump(X) #endif +/* +** Return 1 if pPg is on the dirty list for pCache. Return 0 if not. +** This routine runs inside of assert() statements only. +*/ +#if defined(SQLITE_ENABLE_EXPENSIVE_ASSERT) +static int pageOnDirtyList(PCache *pCache, PgHdr *pPg){ + PgHdr *p; + for(p=pCache->pDirty; p; p=p->pDirtyNext){ + if( p==pPg ) return 1; + } + return 0; +} +static int pageNotOnDirtyList(PCache *pCache, PgHdr *pPg){ + PgHdr *p; + for(p=pCache->pDirty; p; p=p->pDirtyNext){ + if( p==pPg ) return 0; + } + return 1; +} +#else +# define pageOnDirtyList(A,B) 1 +# define pageNotOnDirtyList(A,B) 1 +#endif + /* ** Check invariants on a PgHdr entry. Return true if everything is OK. ** Return false if any invariant is violated. @@ -46876,8 +53492,13 @@ SQLITE_PRIVATE int sqlite3PcachePageSanity(PgHdr *pPg){ assert( pCache!=0 ); /* Every page has an associated PCache */ if( pPg->flags & PGHDR_CLEAN ){ assert( (pPg->flags & PGHDR_DIRTY)==0 );/* Cannot be both CLEAN and DIRTY */ - assert( pCache->pDirty!=pPg ); /* CLEAN pages not on dirty list */ - assert( pCache->pDirtyTail!=pPg ); + assert( pageNotOnDirtyList(pCache, pPg) );/* CLEAN pages not on dirtylist */ + }else{ + assert( (pPg->flags & PGHDR_DIRTY)!=0 );/* If not CLEAN must be DIRTY */ + assert( pPg->pDirtyNext==0 || pPg->pDirtyNext->pDirtyPrev==pPg ); + assert( pPg->pDirtyPrev==0 || pPg->pDirtyPrev->pDirtyNext==pPg ); + assert( pPg->pDirtyPrev!=0 || pCache->pDirty==pPg ); + assert( pageOnDirtyList(pCache, pPg) ); } /* WRITEABLE pages must also be DIRTY */ if( pPg->flags & PGHDR_WRITEABLE ){ @@ -46927,12 +53548,12 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){ if( addRemove & PCACHE_DIRTYLIST_REMOVE ){ assert( pPage->pDirtyNext || pPage==p->pDirtyTail ); assert( pPage->pDirtyPrev || pPage==p->pDirty ); - + /* Update the PCache1.pSynced variable if necessary. */ if( p->pSynced==pPage ){ p->pSynced = pPage->pDirtyPrev; } - + if( pPage->pDirtyNext ){ pPage->pDirtyNext->pDirtyPrev = pPage->pDirtyPrev; }else{ @@ -46942,7 +53563,7 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){ if( pPage->pDirtyPrev ){ pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext; }else{ - /* If there are now no dirty pages in the cache, set eCreate to 2. + /* If there are now no dirty pages in the cache, set eCreate to 2. ** This is an optimization that allows sqlite3PcacheFetch() to skip ** searching for a dirty page to eject from the cache when it might ** otherwise have to. */ @@ -46971,11 +53592,11 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){ p->pDirty = pPage; /* If pSynced is NULL and this page has a clear NEED_SYNC flag, set - ** pSynced to point to it. Checking the NEED_SYNC flag is an + ** pSynced to point to it. Checking the NEED_SYNC flag is an ** optimization, as if pSynced points to a page with the NEED_SYNC - ** flag set sqlite3PcacheFetchStress() searches through all newer + ** flag set sqlite3PcacheFetchStress() searches through all newer ** entries of the dirty-list for a page with NEED_SYNC clear anyway. */ - if( !p->pSynced + if( !p->pSynced && 0==(pPage->flags&PGHDR_NEED_SYNC) /*OPTIMIZATION-IF-FALSE*/ ){ p->pSynced = pPage; @@ -47006,16 +53627,20 @@ static int numberOfCachePages(PCache *p){ ** suggested cache size is set to N. */ return p->szCache; }else{ - /* IMPLEMENTATION-OF: R-61436-13639 If the argument N is negative, then - ** the number of cache pages is adjusted to use approximately abs(N*1024) - ** bytes of memory. */ - return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra)); + i64 n; + /* IMPLEMENTATION-OF: R-59858-46238 If the argument N is negative, then the + ** number of cache pages is adjusted to be a number of pages that would + ** use approximately abs(N*1024) bytes of memory based on the current + ** page size. */ + n = ((-1024*(i64)p->szCache)/(p->szPage+p->szExtra)); + if( n>1000000000 ) n = 1000000000; + return (int)n; } } /*************************************************** General Interfaces ****** ** -** Initialize and shutdown the page cache subsystem. Neither of these +** Initialize and shutdown the page cache subsystem. Neither of these ** functions are threadsafe. */ SQLITE_PRIVATE int sqlite3PcacheInitialize(void){ @@ -47024,6 +53649,7 @@ SQLITE_PRIVATE int sqlite3PcacheInitialize(void){ ** built-in default page cache is used instead of the application defined ** page cache. */ sqlite3PCacheSetDefault(); + assert( sqlite3GlobalConfig.pcache2.xInit!=0 ); } return sqlite3GlobalConfig.pcache2.xInit(sqlite3GlobalConfig.pcache2.pArg); } @@ -47041,8 +53667,8 @@ SQLITE_PRIVATE int sqlite3PcacheSize(void){ return sizeof(PCache); } /* ** Create a new PCache object. Storage space to hold the object -** has already been allocated and is passed in as the p pointer. -** The caller discovers how much space needs to be allocated by +** has already been allocated and is passed in as the p pointer. +** The caller discovers how much space needs to be allocated by ** calling sqlite3PcacheSize(). ** ** szExtra is some extra space allocated for each page. The first @@ -47146,15 +53772,16 @@ SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch( assert( createFlag==0 || pCache->eCreate==eCreate ); assert( createFlag==0 || eCreate==1+(!pCache->bPurgeable||!pCache->pDirty) ); pRes = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, eCreate); - pcacheTrace(("%p.FETCH %d%s (result: %p)\n",pCache,pgno, + pcacheTrace(("%p.FETCH %d%s (result: %p) ",pCache,pgno, createFlag?" create":"",pRes)); + pcachePageTrace(pgno, pRes); return pRes; } /* ** If the sqlite3PcacheFetch() routine is unable to allocate a new ** page because no clean pages are available for reuse and the cache -** size limit has been reached, then this routine can be invoked to +** size limit has been reached, then this routine can be invoked to ** try harder to allocate a page. This routine might invoke the stress ** callback to spill dirty pages to the journal. It will then try to ** allocate the new page and will only fail to allocate a new page on @@ -47171,17 +53798,17 @@ SQLITE_PRIVATE int sqlite3PcacheFetchStress( if( pCache->eCreate==2 ) return 0; if( sqlite3PcachePagecount(pCache)>pCache->szSpill ){ - /* Find a dirty page to write-out and recycle. First try to find a + /* Find a dirty page to write-out and recycle. First try to find a ** page that does not require a journal-sync (one with PGHDR_NEED_SYNC - ** cleared), but if that is not possible settle for any other + ** cleared), but if that is not possible settle for any other ** unreferenced dirty page. ** ** If the LRU page in the dirty list that has a clear PGHDR_NEED_SYNC ** flag is currently referenced, then the following may leave pSynced ** set incorrectly (pointing to other than the LRU page with NEED_SYNC ** cleared). This is Ok, as pSynced is just an optimization. */ - for(pPg=pCache->pSynced; - pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC)); + for(pPg=pCache->pSynced; + pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC)); pPg=pPg->pDirtyPrev ); pCache->pSynced = pPg; @@ -47191,7 +53818,7 @@ SQLITE_PRIVATE int sqlite3PcacheFetchStress( if( pPg ){ int rc; #ifdef SQLITE_LOG_CACHE_SPILL - sqlite3_log(SQLITE_FULL, + sqlite3_log(SQLITE_FULL, "spill page %d making room for %d - cache used: %d/%d", pPg->pgno, pgno, sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache), @@ -47275,6 +53902,7 @@ SQLITE_PRIVATE void SQLITE_NOINLINE sqlite3PcacheRelease(PgHdr *p){ pcacheUnpin(p); }else{ pcacheManageDirtyList(p, PCACHE_DIRTYLIST_FRONT); + assert( sqlite3PcachePageSanity(p) ); } } } @@ -47318,6 +53946,7 @@ SQLITE_PRIVATE void sqlite3PcacheMakeDirty(PgHdr *p){ pcacheTrace(("%p.DIRTY %d\n",p->pCache,p->pgno)); assert( (p->flags & (PGHDR_DIRTY|PGHDR_CLEAN))==PGHDR_DIRTY ); pcacheManageDirtyList(p, PCACHE_DIRTYLIST_ADD); + assert( sqlite3PcachePageSanity(p) ); } assert( sqlite3PcachePageSanity(p) ); } @@ -47376,18 +54005,28 @@ SQLITE_PRIVATE void sqlite3PcacheClearSyncFlags(PCache *pCache){ } /* -** Change the page number of page p to newPgno. +** Change the page number of page p to newPgno. */ SQLITE_PRIVATE void sqlite3PcacheMove(PgHdr *p, Pgno newPgno){ PCache *pCache = p->pCache; + sqlite3_pcache_page *pOther; assert( p->nRef>0 ); assert( newPgno>0 ); assert( sqlite3PcachePageSanity(p) ); pcacheTrace(("%p.MOVE %d -> %d\n",pCache,p->pgno,newPgno)); + pOther = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, newPgno, 0); + if( pOther ){ + PgHdr *pXPage = (PgHdr*)pOther->pExtra; + assert( pXPage->nRef==0 ); + pXPage->nRef++; + pCache->nRefSum++; + sqlite3PcacheDrop(pXPage); + } sqlite3GlobalConfig.pcache2.xRekey(pCache->pCache, p->pPage, p->pgno,newPgno); p->pgno = newPgno; if( (p->flags&PGHDR_DIRTY) && (p->flags&PGHDR_NEED_SYNC) ){ pcacheManageDirtyList(p, PCACHE_DIRTYLIST_FRONT); + assert( sqlite3PcachePageSanity(p) ); } } @@ -47439,7 +54078,7 @@ SQLITE_PRIVATE void sqlite3PcacheClose(PCache *pCache){ sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache); } -/* +/* ** Discard the contents of the cache. */ SQLITE_PRIVATE void sqlite3PcacheClear(PCache *pCache){ @@ -47477,7 +54116,7 @@ static PgHdr *pcacheMergeDirtyList(PgHdr *pA, PgHdr *pB){ } /* -** Sort the list of pages in accending order by pgno. Pages are +** Sort the list of pages in ascending order by pgno. Pages are ** connected by pDirty pointers. The pDirtyPrev pointers are ** corrupted by this sort. ** @@ -47530,24 +54169,24 @@ SQLITE_PRIVATE PgHdr *sqlite3PcacheDirtyList(PCache *pCache){ return pcacheSortDirtyList(pCache->pDirty); } -/* +/* ** Return the total number of references to all pages held by the cache. ** ** This is not the total number of pages referenced, but the sum of the ** reference count for all pages. */ -SQLITE_PRIVATE int sqlite3PcacheRefCount(PCache *pCache){ +SQLITE_PRIVATE i64 sqlite3PcacheRefCount(PCache *pCache){ return pCache->nRefSum; } /* ** Return the number of references to the page supplied as an argument. */ -SQLITE_PRIVATE int sqlite3PcachePageRefcount(PgHdr *p){ +SQLITE_PRIVATE i64 sqlite3PcachePageRefcount(PgHdr *p){ return p->nRef; } -/* +/* ** Return the total number of pages in the cache. */ SQLITE_PRIVATE int sqlite3PcachePagecount(PCache *pCache){ @@ -47589,7 +54228,7 @@ SQLITE_PRIVATE int sqlite3PcacheSetSpillsize(PCache *p, int mxPage){ p->szSpill = mxPage; } res = numberOfCachePages(p); - if( resszSpill ) res = p->szSpill; + if( resszSpill ) res = p->szSpill; return res; } @@ -47619,6 +54258,15 @@ SQLITE_PRIVATE int sqlite3PCachePercentDirty(PCache *pCache){ return nCache ? (int)(((i64)nDirty * 100) / nCache) : 0; } +#ifdef SQLITE_DIRECT_OVERFLOW_READ +/* +** Return true if there are one or more dirty pages in the cache. Else false. +*/ +SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache){ + return (pCache->pDirty!=0); +} +#endif + #if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) /* ** For all dirty pages currently in the cache, invoke the specified @@ -47676,12 +54324,13 @@ SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHd ** size can vary according to architecture, compile-time options, and ** SQLite library version number. ** -** If SQLITE_PCACHE_SEPARATE_HEADER is defined, then the extension is obtained -** using a separate memory allocation from the database page content. This -** seeks to overcome the "clownshoe" problem (also called "internal -** fragmentation" in academic literature) of allocating a few bytes more -** than a power of two with the memory allocator rounding up to the next -** power of two, and leaving the rounded-up space unused. +** Historical note: It used to be that if the SQLITE_PCACHE_SEPARATE_HEADER +** was defined, then the page content would be held in a separate memory +** allocation from the PgHdr1. This was intended to avoid clownshoe memory +** allocations. However, the btree layer needs a small (16-byte) overrun +** area after the page content buffer. The header serves as that overrun +** area. Therefore SQLITE_PCACHE_SEPARATE_HEADER was discontinued to avoid +** any possibility of a memory error. ** ** This module tracks pointers to PgHdr1 objects. Only pcache.c communicates ** with this module. Information is passed back and forth as PgHdr1 pointers. @@ -47700,14 +54349,14 @@ SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHd ** ** The third case is a chunk of heap memory (defaulting to 100 pages worth) ** that is allocated when the page cache is created. The size of the local -** bulk allocation can be adjusted using +** bulk allocation can be adjusted using ** ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, (void*)0, 0, N). ** ** If N is positive, then N pages worth of memory are allocated using a single ** sqlite3Malloc() call and that memory is used for the first N pages allocated. ** Or if N is negative, then -1024*N bytes of memory are allocated and used -** for as many pages as can be accomodated. +** for as many pages as can be accommodated. ** ** Only one of (2) or (3) can be used. Once the memory available to (2) or ** (3) is exhausted, subsequent allocations fail over to the general-purpose @@ -47725,29 +54374,51 @@ typedef struct PgFreeslot PgFreeslot; typedef struct PGroup PGroup; /* -** Each cache entry is represented by an instance of the following -** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of -** PgHdr1.pCache->szPage bytes is allocated directly before this structure -** in memory. +** Each cache entry is represented by an instance of the following +** structure. A buffer of PgHdr1.pCache->szPage bytes is allocated +** directly before this structure and is used to cache the page content. +** +** When reading a corrupt database file, it is possible that SQLite might +** read a few bytes (no more than 16 bytes) past the end of the page buffer. +** It will only read past the end of the page buffer, never write. This +** object is positioned immediately after the page buffer to serve as an +** overrun area, so that overreads are harmless. +** +** Variables isBulkLocal and isAnchor were once type "u8". That works, +** but causes a 2-byte gap in the structure for most architectures (since +** pointers must be either 4 or 8-byte aligned). As this structure is located +** in memory directly after the associated page data, if the database is +** corrupt, code at the b-tree layer may overread the page buffer and +** read part of this structure before the corruption is detected. This +** can cause a valgrind error if the uninitialized gap is accessed. Using u16 +** ensures there is no such gap, and therefore no bytes of uninitialized +** memory in the structure. +** +** The pLruNext and pLruPrev pointers form a double-linked circular list +** of all pages that are unpinned. The PGroup.lru element (which should be +** the only element on the list with PgHdr1.isAnchor set to 1) forms the +** beginning and the end of the list. */ struct PgHdr1 { - sqlite3_pcache_page page; /* Base class. Must be first. pBuf & pExtra */ - unsigned int iKey; /* Key value (page number) */ - u8 isBulkLocal; /* This page from bulk local storage */ - u8 isAnchor; /* This is the PGroup.lru element */ - PgHdr1 *pNext; /* Next in hash table chain */ - PCache1 *pCache; /* Cache that currently owns this page */ - PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ - PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ + sqlite3_pcache_page page; /* Base class. Must be first. pBuf & pExtra */ + unsigned int iKey; /* Key value (page number) */ + u16 isBulkLocal; /* This page from bulk local storage */ + u16 isAnchor; /* This is the PGroup.lru element */ + PgHdr1 *pNext; /* Next in hash table chain */ + PCache1 *pCache; /* Cache that currently owns this page */ + PgHdr1 *pLruNext; /* Next in circular LRU list of unpinned pages */ + PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ + /* NB: pLruPrev is only valid if pLruNext!=0 */ }; /* -** A page is pinned if it is no on the LRU list +** A page is pinned if it is not on the LRU list. To be "pinned" means +** that the page is in active use and must not be deallocated. */ #define PAGE_IS_PINNED(p) ((p)->pLruNext==0) #define PAGE_IS_UNPINNED(p) ((p)->pLruNext!=0) -/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set +/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set ** of one or more PCaches that are able to recycle each other's unpinned ** pages when they are under memory pressure. A PGroup is an instance of ** the following object. @@ -47783,13 +54454,13 @@ struct PGroup { ** temporary or transient database) has a single page cache which ** is an instance of this object. ** -** Pointers to structures of this type are cast and returned as +** Pointers to structures of this type are cast and returned as ** opaque sqlite3_pcache* handles. */ struct PCache1 { /* Cache configuration parameters. Page size (szPage) and the purgeable ** flag (bPurgeable) and the pnPurgeable pointer are all set when the - ** cache is created and are never changed thereafter. nMax may be + ** cache is created and are never changed thereafter. nMax may be ** modified at any time by a call to the pcache1Cachesize() method. ** The PGroup mutex must be held when accessing nMax. */ @@ -47803,6 +54474,7 @@ struct PCache1 { unsigned int nMax; /* Configured "cache_size" value */ unsigned int n90pct; /* nMax*9/10 */ unsigned int iMaxKey; /* Largest key seen since xTruncate() */ + unsigned int nPurgeableDummy; /* pnPurgeable points here when not used*/ /* Hash table of all pages. The following variables may only be accessed ** when the accessor is holding the PGroup mutex. @@ -47836,7 +54508,7 @@ static SQLITE_WSD struct PCacheGlobal { */ int isInit; /* True if initialized */ int separateCache; /* Use a new PGroup for each PCache */ - int nInitPage; /* Initial bulk allocation size */ + int nInitPage; /* Initial bulk allocation size */ int szSlot; /* Size of each free slot */ int nSlot; /* The number of pcache slots */ int nReserve; /* Try to keep nFreeSlot above this */ @@ -47877,7 +54549,7 @@ static SQLITE_WSD struct PCacheGlobal { /* -** This function is called during initialization if a static buffer is +** This function is called during initialization if a static buffer is ** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE ** verb to sqlite3_config(). Parameter pBuf points to an allocation large ** enough to contain 'n' buffers of 'sz' bytes each. @@ -47937,6 +54609,7 @@ static int pcache1InitBulk(PCache1 *pCache){ pX->isBulkLocal = 1; pX->isAnchor = 0; pX->pNext = pCache->pFree; + pX->pLruPrev = 0; /* Initializing this saves a valgrind error */ pCache->pFree = pX; zBulk += pCache->szAlloc; }while( --nBulk ); @@ -47946,8 +54619,8 @@ static int pcache1InitBulk(PCache1 *pCache){ /* ** Malloc function used within this file to allocate space from the buffer -** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no -** such buffer exists or there is no space left in it, this function falls +** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no +** such buffer exists or there is no space left in it, this function falls ** back to sqlite3Malloc(). ** ** Multiple threads can run this routine at the same time. Global variables @@ -48047,40 +54720,32 @@ static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){ assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); if( pCache->pFree || (pCache->nPage==0 && pcache1InitBulk(pCache)) ){ + assert( pCache->pFree!=0 ); p = pCache->pFree; pCache->pFree = p->pNext; p->pNext = 0; }else{ #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT /* The group mutex must be released before pcache1Alloc() is called. This - ** is because it might call sqlite3_release_memory(), which assumes that + ** is because it might call sqlite3_release_memory(), which assumes that ** this mutex is not held. */ assert( pcache1.separateCache==0 ); assert( pCache->pGroup==&pcache1.grp ); pcache1LeaveMutex(pCache->pGroup); #endif if( benignMalloc ){ sqlite3BeginBenignMalloc(); } -#ifdef SQLITE_PCACHE_SEPARATE_HEADER - pPg = pcache1Alloc(pCache->szPage); - p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra); - if( !pPg || !p ){ - pcache1Free(pPg); - sqlite3_free(p); - pPg = 0; - } -#else pPg = pcache1Alloc(pCache->szAlloc); - p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage]; -#endif if( benignMalloc ){ sqlite3EndBenignMalloc(); } #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT pcache1EnterMutex(pCache->pGroup); #endif if( pPg==0 ) return 0; + p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage]; p->page.pBuf = pPg; p->page.pExtra = &p[1]; p->isBulkLocal = 0; p->isAnchor = 0; + p->pLruPrev = 0; /* Initializing this saves a valgrind error */ } (*pCache->pnPurgeable)++; return p; @@ -48099,9 +54764,6 @@ static void pcache1FreePage(PgHdr1 *p){ pCache->pFree = p; }else{ pcache1Free(p->page.pBuf); -#ifdef SQLITE_PCACHE_SEPARATE_HEADER - sqlite3_free(p); -#endif } (*pCache->pnPurgeable)--; } @@ -48112,6 +54774,7 @@ static void pcache1FreePage(PgHdr1 *p){ ** exists, this function falls back to sqlite3Malloc(). */ SQLITE_PRIVATE void *sqlite3PageMalloc(int sz){ + assert( sz<=65536+8 ); /* These allocations are never very large */ return pcache1Alloc(sz); } @@ -48191,7 +54854,7 @@ static void pcache1ResizeHash(PCache1 *p){ } /* -** This function is used internally to remove the page pPage from the +** This function is used internally to remove the page pPage from the ** PGroup LRU list, if is part of it. If pPage is not part of the PGroup ** LRU list, then this function is a no-op. ** @@ -48206,7 +54869,8 @@ static PgHdr1 *pcache1PinPage(PgHdr1 *pPage){ pPage->pLruPrev->pLruNext = pPage->pLruNext; pPage->pLruNext->pLruPrev = pPage->pLruPrev; pPage->pLruNext = 0; - pPage->pLruPrev = 0; + /* pPage->pLruPrev = 0; + ** No need to clear pLruPrev as it is never accessed if pLruNext is 0 */ assert( pPage->isAnchor==0 ); assert( pPage->pCache->pGroup->lru.isAnchor==1 ); pPage->pCache->nRecyclable--; @@ -48215,7 +54879,7 @@ static PgHdr1 *pcache1PinPage(PgHdr1 *pPage){ /* -** Remove the page supplied as an argument from the hash table +** Remove the page supplied as an argument from the hash table ** (PCache1.apHash structure) that it is currently stored in. ** Also free the page if freePage is true. ** @@ -48258,8 +54922,8 @@ static void pcache1EnforceMaxPage(PCache1 *pCache){ } /* -** Discard all pages from cache pCache with a page number (key value) -** greater than or equal to iLimit. Any pinned pages that meet this +** Discard all pages from cache pCache with a page number (key value) +** greater than or equal to iLimit. Any pinned pages that meet this ** criteria are unpinned before they are discarded. ** ** The PCache mutex must be held when this function is called. @@ -48291,7 +54955,7 @@ static void pcache1TruncateUnsafe( PgHdr1 **pp; PgHdr1 *pPage; assert( hnHash ); - pp = &pCache->apHash[h]; + pp = &pCache->apHash[h]; while( (pPage = *pp)!=0 ){ if( pPage->iKey>=iLimit ){ pCache->nPage--; @@ -48330,7 +54994,7 @@ static int pcache1Init(void *NotUsed){ ** ** * Use a unified cache in single-threaded applications that have ** configured a start-time buffer for use as page-cache memory using - ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, pBuf, sz, N) with non-NULL + ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, pBuf, sz, N) with non-NULL ** pBuf argument. ** ** * Otherwise use separate caches (mode-1) @@ -48365,7 +55029,7 @@ static int pcache1Init(void *NotUsed){ /* ** Implementation of the sqlite3_pcache.xShutdown method. -** Note that the static mutex allocated in xInit does +** Note that the static mutex allocated in xInit does ** not need to be freed. */ static void pcache1Shutdown(void *NotUsed){ @@ -48399,6 +55063,7 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){ }else{ pGroup = &pcache1.grp; } + pcache1EnterMutex(pGroup); if( pGroup->lru.isAnchor==0 ){ pGroup->lru.isAnchor = 1; pGroup->lru.pLruPrev = pGroup->lru.pLruNext = &pGroup->lru; @@ -48408,7 +55073,6 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){ pCache->szExtra = szExtra; pCache->szAlloc = szPage + szExtra + ROUND8(sizeof(PgHdr1)); pCache->bPurgeable = (bPurgeable ? 1 : 0); - pcache1EnterMutex(pGroup); pcache1ResizeHash(pCache); if( bPurgeable ){ pCache->nMin = 10; @@ -48416,8 +55080,7 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; pCache->pnPurgeable = &pGroup->nPurgeable; }else{ - static unsigned int dummyCurrentPage; - pCache->pnPurgeable = &dummyCurrentPage; + pCache->pnPurgeable = &pCache->nPurgeableDummy; } pcache1LeaveMutex(pGroup); if( pCache->nHash==0 ){ @@ -48429,18 +55092,24 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){ } /* -** Implementation of the sqlite3_pcache.xCachesize method. +** Implementation of the sqlite3_pcache.xCachesize method. ** ** Configure the cache_size limit for a cache. */ static void pcache1Cachesize(sqlite3_pcache *p, int nMax){ PCache1 *pCache = (PCache1 *)p; + u32 n; + assert( nMax>=0 ); if( pCache->bPurgeable ){ PGroup *pGroup = pCache->pGroup; pcache1EnterMutex(pGroup); - pGroup->nMaxPage += (nMax - pCache->nMax); + n = (u32)nMax; + if( n > 0x7fff0000 - pGroup->nMaxPage + pCache->nMax ){ + n = 0x7fff0000 - pGroup->nMaxPage + pCache->nMax; + } + pGroup->nMaxPage += (n - pCache->nMax); pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pCache->nMax = nMax; + pCache->nMax = n; pCache->n90pct = pCache->nMax*9/10; pcache1EnforceMaxPage(pCache); pcache1LeaveMutex(pGroup); @@ -48448,7 +55117,7 @@ static void pcache1Cachesize(sqlite3_pcache *p, int nMax){ } /* -** Implementation of the sqlite3_pcache.xShrink method. +** Implementation of the sqlite3_pcache.xShrink method. ** ** Free up as much memory as possible. */ @@ -48456,7 +55125,7 @@ static void pcache1Shrink(sqlite3_pcache *p){ PCache1 *pCache = (PCache1*)p; if( pCache->bPurgeable ){ PGroup *pGroup = pCache->pGroup; - int savedMaxPage; + unsigned int savedMaxPage; pcache1EnterMutex(pGroup); savedMaxPage = pGroup->nMaxPage; pGroup->nMaxPage = 0; @@ -48467,7 +55136,7 @@ static void pcache1Shrink(sqlite3_pcache *p){ } /* -** Implementation of the sqlite3_pcache.xPagecount method. +** Implementation of the sqlite3_pcache.xPagecount method. */ static int pcache1Pagecount(sqlite3_pcache *p){ int n; @@ -48488,8 +55157,8 @@ static int pcache1Pagecount(sqlite3_pcache *p){ ** for these steps, the main pcache1Fetch() procedure can run faster. */ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( - PCache1 *pCache, - unsigned int iKey, + PCache1 *pCache, + unsigned int iKey, int createFlag ){ unsigned int nPinned; @@ -48531,8 +55200,8 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( } } - /* Step 5. If a usable page buffer has still not been found, - ** attempt to allocate a new one. + /* Step 5. If a usable page buffer has still not been found, + ** attempt to allocate a new one. */ if( !pPage ){ pPage = pcache1AllocPage(pCache, createFlag==1); @@ -48544,8 +55213,9 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( pPage->iKey = iKey; pPage->pNext = pCache->apHash[h]; pPage->pCache = pCache; - pPage->pLruPrev = 0; pPage->pLruNext = 0; + /* pPage->pLruPrev = 0; + ** No need to clear pLruPrev since it is not accessed when pLruNext==0 */ *(void **)pPage->page.pExtra = 0; pCache->apHash[h] = pPage; if( iKey>pCache->iMaxKey ){ @@ -48556,13 +55226,13 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( } /* -** Implementation of the sqlite3_pcache.xFetch method. +** Implementation of the sqlite3_pcache.xFetch method. ** ** Fetch a page by key value. ** ** Whether or not a new page may be allocated by this function depends on ** the value of the createFlag argument. 0 means do not allocate a new -** page. 1 means allocate a new page if space is easily available. 2 +** page. 1 means allocate a new page if space is easily available. 2 ** means to try really hard to allocate a new page. ** ** For a non-purgeable cache (a cache used as the storage for an in-memory @@ -48573,7 +55243,7 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( ** There are three different approaches to obtaining space for a page, ** depending on the value of parameter createFlag (which may be 0, 1 or 2). ** -** 1. Regardless of the value of createFlag, the cache is searched for a +** 1. Regardless of the value of createFlag, the cache is searched for a ** copy of the requested page. If one is found, it is returned. ** ** 2. If createFlag==0 and the page is not already in the cache, NULL is @@ -48587,13 +55257,13 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( ** PCache1.nMax, or ** ** (b) the number of pages pinned by the cache is greater than -** the sum of nMax for all purgeable caches, less the sum of +** the sum of nMax for all purgeable caches, less the sum of ** nMin for all other purgeable caches, or ** ** 4. If none of the first three conditions apply and the cache is marked ** as purgeable, and if one of the following is true: ** -** (a) The number of pages allocated for the cache is already +** (a) The number of pages allocated for the cache is already ** PCache1.nMax, or ** ** (b) The number of pages allocated for all purgeable caches is @@ -48605,7 +55275,7 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( ** ** then attempt to recycle a page from the LRU list. If it is the right ** size, return the recycled buffer. Otherwise, free the buffer and -** proceed to step 5. +** proceed to step 5. ** ** 5. Otherwise, allocate and return a new page buffer. ** @@ -48615,8 +55285,8 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( ** invokes the appropriate routine. */ static PgHdr1 *pcache1FetchNoMutex( - sqlite3_pcache *p, - unsigned int iKey, + sqlite3_pcache *p, + unsigned int iKey, int createFlag ){ PCache1 *pCache = (PCache1 *)p; @@ -48645,8 +55315,8 @@ static PgHdr1 *pcache1FetchNoMutex( } #if PCACHE1_MIGHT_USE_GROUP_MUTEX static PgHdr1 *pcache1FetchWithMutex( - sqlite3_pcache *p, - unsigned int iKey, + sqlite3_pcache *p, + unsigned int iKey, int createFlag ){ PCache1 *pCache = (PCache1 *)p; @@ -48660,8 +55330,8 @@ static PgHdr1 *pcache1FetchWithMutex( } #endif static sqlite3_pcache_page *pcache1Fetch( - sqlite3_pcache *p, - unsigned int iKey, + sqlite3_pcache *p, + unsigned int iKey, int createFlag ){ #if PCACHE1_MIGHT_USE_GROUP_MUTEX || defined(SQLITE_DEBUG) @@ -48691,21 +55361,21 @@ static sqlite3_pcache_page *pcache1Fetch( ** Mark a page as unpinned (eligible for asynchronous recycling). */ static void pcache1Unpin( - sqlite3_pcache *p, - sqlite3_pcache_page *pPg, + sqlite3_pcache *p, + sqlite3_pcache_page *pPg, int reuseUnlikely ){ PCache1 *pCache = (PCache1 *)p; PgHdr1 *pPage = (PgHdr1 *)pPg; PGroup *pGroup = pCache->pGroup; - + assert( pPage->pCache==pCache ); pcache1EnterMutex(pGroup); - /* It is an error to call this function if the page is already + /* It is an error to call this function if the page is already ** part of the PGroup LRU list. */ - assert( pPage->pLruPrev==0 && pPage->pLruNext==0 ); + assert( pPage->pLruNext==0 ); assert( PAGE_IS_PINNED(pPage) ); if( reuseUnlikely || pGroup->nPurgeable>pGroup->nMaxPage ){ @@ -48723,7 +55393,7 @@ static void pcache1Unpin( } /* -** Implementation of the sqlite3_pcache.xRekey method. +** Implementation of the sqlite3_pcache.xRekey method. */ static void pcache1Rekey( sqlite3_pcache *p, @@ -48734,23 +55404,26 @@ static void pcache1Rekey( PCache1 *pCache = (PCache1 *)p; PgHdr1 *pPage = (PgHdr1 *)pPg; PgHdr1 **pp; - unsigned int h; + unsigned int hOld, hNew; assert( pPage->iKey==iOld ); assert( pPage->pCache==pCache ); + assert( iOld!=iNew ); /* The page number really is changing */ pcache1EnterMutex(pCache->pGroup); - h = iOld%pCache->nHash; - pp = &pCache->apHash[h]; + assert( pcache1FetchNoMutex(p, iOld, 0)==pPage ); /* pPg really is iOld */ + hOld = iOld%pCache->nHash; + pp = &pCache->apHash[hOld]; while( (*pp)!=pPage ){ pp = &(*pp)->pNext; } *pp = pPage->pNext; - h = iNew%pCache->nHash; + assert( pcache1FetchNoMutex(p, iNew, 0)==0 ); /* iNew not in cache */ + hNew = iNew%pCache->nHash; pPage->iKey = iNew; - pPage->pNext = pCache->apHash[h]; - pCache->apHash[h] = pPage; + pPage->pNext = pCache->apHash[hNew]; + pCache->apHash[hNew] = pPage; if( iNew>pCache->iMaxKey ){ pCache->iMaxKey = iNew; } @@ -48759,7 +55432,7 @@ static void pcache1Rekey( } /* -** Implementation of the sqlite3_pcache.xTruncate method. +** Implementation of the sqlite3_pcache.xTruncate method. ** ** Discard all unpinned pages in the cache with a page number equal to ** or greater than parameter iLimit. Any pinned pages with a page number @@ -48776,7 +55449,7 @@ static void pcache1Truncate(sqlite3_pcache *p, unsigned int iLimit){ } /* -** Implementation of the sqlite3_pcache.xDestroy method. +** Implementation of the sqlite3_pcache.xDestroy method. ** ** Destroy a cache allocated using pcache1Create(). */ @@ -48842,7 +55515,7 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void){ ** by the current thread may be sqlite3_free()ed. ** ** nReq is the number of bytes of memory required. Once this much has -** been released, the function returns. The return value is the total number +** been released, the function returns. The return value is the total number ** of bytes of memory released. */ SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){ @@ -48857,9 +55530,6 @@ SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){ && p->isAnchor==0 ){ nFree += pcache1MemSize(p->page.pBuf); -#ifdef SQLITE_PCACHE_SEPARATE_HEADER - nFree += sqlite3MemSize(p); -#endif assert( PAGE_IS_UNPINNED(p) ); pcache1PinPage(p); pcache1RemoveFromHash(p, 1); @@ -48933,14 +55603,14 @@ SQLITE_PRIVATE void sqlite3PcacheStats( ** extracts the least value from the RowSet. ** ** The INSERT primitive might allocate additional memory. Memory is -** allocated in chunks so most INSERTs do no allocation. There is an +** allocated in chunks so most INSERTs do no allocation. There is an ** upper bound on the size of allocated memory. No memory is freed ** until DESTROY. ** ** The TEST primitive includes a "batch" number. The TEST primitive ** will only see elements that were inserted before the last change ** in the batch number. In other words, if an INSERT occurs between -** two TESTs where the TESTs have the same batch nubmer, then the +** two TESTs where the TESTs have the same batch number, then the ** value added by the INSERT will not be visible to the second TEST. ** The initial batch number is zero, so if the very first TEST contains ** a non-zero batch number, it will see all prior INSERTs. @@ -48981,7 +55651,7 @@ SQLITE_PRIVATE void sqlite3PcacheStats( ** in the list, pLeft points to the tree, and v is unused. The ** RowSet.pForest value points to the head of this forest list. */ -struct RowSetEntry { +struct RowSetEntry { i64 v; /* ROWID value for this entry */ struct RowSetEntry *pRight; /* Right subtree (larger entries) or list */ struct RowSetEntry *pLeft; /* Left subtree (smaller entries) */ @@ -49022,30 +55692,23 @@ struct RowSet { #define ROWSET_NEXT 0x02 /* True if sqlite3RowSetNext() has been called */ /* -** Turn bulk memory into a RowSet object. N bytes of memory -** are available at pSpace. The db pointer is used as a memory context -** for any subsequent allocations that need to occur. -** Return a pointer to the new RowSet object. -** -** It must be the case that N is sufficient to make a Rowset. If not -** an assertion fault occurs. -** -** If N is larger than the minimum, use the surplus as an initial -** allocation of entries available to be filled. +** Allocate a RowSet object. Return NULL if a memory allocation +** error occurs. */ -SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3 *db, void *pSpace, unsigned int N){ - RowSet *p; - assert( N >= ROUND8(sizeof(*p)) ); - p = pSpace; - p->pChunk = 0; - p->db = db; - p->pEntry = 0; - p->pLast = 0; - p->pForest = 0; - p->pFresh = (struct RowSetEntry*)(ROUND8(sizeof(*p)) + (char*)p); - p->nFresh = (u16)((N - ROUND8(sizeof(*p)))/sizeof(struct RowSetEntry)); - p->rsFlags = ROWSET_SORTED; - p->iBatch = 0; +SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3 *db){ + RowSet *p = sqlite3DbMallocRawNN(db, sizeof(*p)); + if( p ){ + int N = sqlite3DbMallocSize(db, p); + p->pChunk = 0; + p->db = db; + p->pEntry = 0; + p->pLast = 0; + p->pForest = 0; + p->pFresh = (struct RowSetEntry*)(ROUND8(sizeof(*p)) + (char*)p); + p->nFresh = (u16)((N - ROUND8(sizeof(*p)))/sizeof(struct RowSetEntry)); + p->rsFlags = ROWSET_SORTED; + p->iBatch = 0; + } return p; } @@ -49054,7 +55717,8 @@ SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3 *db, void *pSpace, unsigned int ** the RowSet has allocated over its lifetime. This routine is ** the destructor for the RowSet. */ -SQLITE_PRIVATE void sqlite3RowSetClear(RowSet *p){ +SQLITE_PRIVATE void sqlite3RowSetClear(void *pArg){ + RowSet *p = (RowSet*)pArg; struct RowSetChunk *pChunk, *pNextChunk; for(pChunk=p->pChunk; pChunk; pChunk = pNextChunk){ pNextChunk = pChunk->pNextChunk; @@ -49068,10 +55732,20 @@ SQLITE_PRIVATE void sqlite3RowSetClear(RowSet *p){ p->rsFlags = ROWSET_SORTED; } +/* +** Deallocate all chunks from a RowSet. This frees all memory that +** the RowSet has allocated over its lifetime. This routine is +** the destructor for the RowSet. +*/ +SQLITE_PRIVATE void sqlite3RowSetDelete(void *pArg){ + sqlite3RowSetClear(pArg); + sqlite3DbFree(((RowSet*)pArg)->db, pArg); +} + /* ** Allocate a new RowSetEntry object that is associated with the ** given RowSet. Return a pointer to the new and completely uninitialized -** objected. +** object. ** ** In an OOM situation, the RowSet.db->mallocFailed flag is set and this ** routine returns NULL. @@ -49129,7 +55803,7 @@ SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet *p, i64 rowid){ /* ** Merge two lists of RowSetEntry objects. Remove duplicates. ** -** The input lists are connected via pRight pointers and are +** The input lists are connected via pRight pointers and are ** assumed to each already be in sorted order. */ static struct RowSetEntry *rowSetEntryMerge( @@ -49166,7 +55840,7 @@ static struct RowSetEntry *rowSetEntryMerge( /* ** Sort all elements on the list of RowSetEntry objects into order of ** increasing v. -*/ +*/ static struct RowSetEntry *rowSetEntrySort(struct RowSetEntry *pIn){ unsigned int i; struct RowSetEntry *pNext, *aBucket[40]; @@ -49239,7 +55913,7 @@ static struct RowSetEntry *rowSetNDeepTree( struct RowSetEntry *pLeft; /* Left subtree */ if( *ppList==0 ){ /*OPTIMIZATION-IF-TRUE*/ /* Prevent unnecessary deep recursion when we run out of entries */ - return 0; + return 0; } if( iDepth>1 ){ /*OPTIMIZATION-IF-TRUE*/ /* This branch causes a *balanced* tree to be generated. A valid tree @@ -49347,7 +56021,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 if( p ){ struct RowSetEntry **ppPrevTree = &pRowSet->pForest; if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/ - /* Only sort the current set of entiries if they need it */ + /* Only sort the current set of entries if they need it */ p = rowSetEntrySort(p); } for(pTree = pRowSet->pForest; pTree; pTree=pTree->pRight){ @@ -49409,7 +56083,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 ** ************************************************************************* ** This is the implementation of the page cache subsystem or "pager". -** +** ** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file @@ -49432,8 +56106,8 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 ** May you share freely, never taking more than you give. ** ************************************************************************* -** This header file defines the interface to the write-ahead logging -** system. Refer to the comments below and the header comment attached to +** This header file defines the interface to the write-ahead logging +** system. Refer to the comments below and the header comment attached to ** the implementation of each function in log.c for further details. */ @@ -49468,12 +56142,13 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 # define sqlite3WalFramesize(z) 0 # define sqlite3WalFindFrame(x,y,z) 0 # define sqlite3WalFile(x) 0 +# undef SQLITE_USE_SEH #else #define WAL_SAVEPOINT_NDATA 4 -/* Connection to a write-ahead log (WAL) file. -** There is one object of this type for each pager. +/* Connection to a write-ahead log (WAL) file. +** There is one object of this type for each pager. */ typedef struct Wal Wal; @@ -49484,7 +56159,7 @@ SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, sqlite3*, int sync_flags, int, u8 /* Set the limiting size of a WAL file. */ SQLITE_PRIVATE void sqlite3WalLimit(Wal*, i64); -/* Used by readers to open (lock) and close (unlock) a snapshot. A +/* Used by readers to open (lock) and close (unlock) a snapshot. A ** snapshot is like a read-transaction. It is the state of the database ** at an instant in time. sqlite3WalOpenSnapshot gets a read lock and ** preserves the current state even if the other threads or processes @@ -49519,7 +56194,7 @@ SQLITE_PRIVATE int sqlite3WalSavepointUndo(Wal *pWal, u32 *aWalData); /* Write a frame or frames to the log. */ SQLITE_PRIVATE int sqlite3WalFrames(Wal *pWal, int, PgHdr *, Pgno, int, int); -/* Copy pages from the log to the database file */ +/* Copy pages from the log to the database file */ SQLITE_PRIVATE int sqlite3WalCheckpoint( Wal *pWal, /* Write-ahead log connection */ sqlite3 *db, /* Check this handle's interrupt flag */ @@ -49547,7 +56222,7 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op); /* Return true if the argument is non-NULL and the WAL module is using ** heap-memory for the wal-index. Otherwise, if the argument is NULL or the -** WAL module is using shared-memory, return false. +** WAL module is using shared-memory, return false. */ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal); @@ -49555,6 +56230,8 @@ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal); SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapshot); SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot); SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal); +SQLITE_PRIVATE int sqlite3WalSnapshotCheck(Wal *pWal, sqlite3_snapshot *pSnapshot); +SQLITE_PRIVATE void sqlite3WalSnapshotUnlock(Wal *pWal); #endif #ifdef SQLITE_ENABLE_ZIPVFS @@ -49567,6 +56244,15 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal); /* Return the sqlite3_file object for the WAL file */ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal); +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT +SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock); +SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db); +#endif + +#ifdef SQLITE_USE_SEH +SQLITE_PRIVATE int sqlite3WalSystemErrno(Wal*); +#endif + #endif /* ifndef SQLITE_OMIT_WAL */ #endif /* SQLITE_WAL_H */ @@ -49587,60 +56273,60 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal); ** ** Definition: A page of the database file is said to be "overwriteable" if ** one or more of the following are true about the page: -** +** ** (a) The original content of the page as it was at the beginning of ** the transaction has been written into the rollback journal and ** synced. -** +** ** (b) The page was a freelist leaf page at the start of the transaction. -** +** ** (c) The page number is greater than the largest page that existed in ** the database file at the start of the transaction. -** +** ** (1) A page of the database file is never overwritten unless one of the ** following are true: -** +** ** (a) The page and all other pages on the same sector are overwriteable. -** +** ** (b) The atomic page write optimization is enabled, and the entire ** transaction other than the update of the transaction sequence ** number consists of a single page change. -** +** ** (2) The content of a page written into the rollback journal exactly matches ** both the content in the database when the rollback journal was written ** and the content in the database at the beginning of the current ** transaction. -** +** ** (3) Writes to the database file are an integer multiple of the page size ** in length and are aligned on a page boundary. -** +** ** (4) Reads from the database file are either aligned on a page boundary and ** an integer multiple of the page size in length or are taken from the ** first 100 bytes of the database file. -** +** ** (5) All writes to the database file are synced prior to the rollback journal ** being deleted, truncated, or zeroed. -** -** (6) If a master journal file is used, then all writes to the database file -** are synced prior to the master journal being deleted. -** +** +** (6) If a super-journal file is used, then all writes to the database file +** are synced prior to the super-journal being deleted. +** ** Definition: Two databases (or the same database at two points it time) ** are said to be "logically equivalent" if they give the same answer to ** all queries. Note in particular the content of freelist leaf ** pages can be changed arbitrarily without affecting the logical equivalence ** of the database. -** +** ** (7) At any time, if any subset, including the empty set and the total set, -** of the unsynced changes to a rollback journal are removed and the +** of the unsynced changes to a rollback journal are removed and the ** journal is rolled back, the resulting database file will be logically ** equivalent to the database file at the beginning of the transaction. -** +** ** (8) When a transaction is rolled back, the xTruncate method of the VFS ** is called to restore the database file to the same size it was at ** the beginning of the transaction. (In some VFSes, the xTruncate ** method is a no-op, but that does not change the fact the SQLite will ** invoke it.) -** +** ** (9) Whenever the database file is modified, at least one bit in the range ** of bytes from 24 through 39 inclusive will be changed prior to releasing ** the EXCLUSIVE lock, thus signaling other connections on the same @@ -49673,7 +56359,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ /* ** The following two macros are used within the PAGERTRACE() macros above -** to print out file-descriptors. +** to print out file-descriptors. ** ** PAGERID() takes a pointer to a Pager struct as its argument. The ** associated file-descriptor is returned. FILEHANDLEID() takes an sqlite3_file @@ -49694,7 +56380,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** | | | ** | V | ** |<-------WRITER_LOCKED------> ERROR -** | | ^ +** | | ^ ** | V | ** |<------WRITER_CACHEMOD-------->| ** | | | @@ -49706,7 +56392,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** ** List of state transitions and the C [function] that performs each: -** +** ** OPEN -> READER [sqlite3PagerSharedLock] ** READER -> OPEN [pager_unlock] ** @@ -49718,7 +56404,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** WRITER_*** -> ERROR [pager_error] ** ERROR -> OPEN [pager_unlock] -** +** ** ** OPEN: ** @@ -49732,9 +56418,9 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** READER: ** -** In this state all the requirements for reading the database in +** In this state all the requirements for reading the database in ** rollback (non-WAL) mode are met. Unless the pager is (or recently -** was) in exclusive-locking mode, a user-level read transaction is +** was) in exclusive-locking mode, a user-level read transaction is ** open. The database size is known in this state. ** ** A connection running with locking_mode=normal enters this state when @@ -49744,28 +56430,28 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** this state even after the read-transaction is closed. The only way ** a locking_mode=exclusive connection can transition from READER to OPEN ** is via the ERROR state (see below). -** +** ** * A read transaction may be active (but a write-transaction cannot). ** * A SHARED or greater lock is held on the database file. -** * The dbSize variable may be trusted (even if a user-level read +** * The dbSize variable may be trusted (even if a user-level read ** transaction is not active). The dbOrigSize and dbFileSize variables ** may not be trusted at this point. ** * If the database is a WAL database, then the WAL connection is open. -** * Even if a read-transaction is not open, it is guaranteed that +** * Even if a read-transaction is not open, it is guaranteed that ** there is no hot-journal in the file-system. ** ** WRITER_LOCKED: ** ** The pager moves to this state from READER when a write-transaction -** is first opened on the database. In WRITER_LOCKED state, all locks -** required to start a write-transaction are held, but no actual +** is first opened on the database. In WRITER_LOCKED state, all locks +** required to start a write-transaction are held, but no actual ** modifications to the cache or database have taken place. ** -** In rollback mode, a RESERVED or (if the transaction was opened with +** In rollback mode, a RESERVED or (if the transaction was opened with ** BEGIN EXCLUSIVE) EXCLUSIVE lock is obtained on the database file when -** moving to this state, but the journal file is not written to or opened -** to in this state. If the transaction is committed or rolled back while -** in WRITER_LOCKED state, all that is required is to unlock the database +** moving to this state, but the journal file is not written to or opened +** to in this state. If the transaction is committed or rolled back while +** in WRITER_LOCKED state, all that is required is to unlock the database ** file. ** ** IN WAL mode, WalBeginWriteTransaction() is called to lock the log file. @@ -49773,7 +56459,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** is made to obtain an EXCLUSIVE lock on the database file. ** ** * A write transaction is active. -** * If the connection is open in rollback-mode, a RESERVED or greater +** * If the connection is open in rollback-mode, a RESERVED or greater ** lock is held on the database file. ** * If the connection is open in WAL-mode, a WAL write transaction ** is open (i.e. sqlite3WalBeginWriteTransaction() has been successfully @@ -49792,7 +56478,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** * A write transaction is active. ** * A RESERVED or greater lock is held on the database file. -** * The journal file is open and the first header has been written +** * The journal file is open and the first header has been written ** to it, but the header has not been synced to disk. ** * The contents of the page cache have been modified. ** @@ -49805,7 +56491,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** * A write transaction is active. ** * An EXCLUSIVE or greater lock is held on the database file. -** * The journal file is open and the first header has been written +** * The journal file is open and the first header has been written ** and synced to disk. ** * The contents of the page cache have been modified (and possibly ** written to disk). @@ -49817,8 +56503,8 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** A rollback-mode pager changes to WRITER_FINISHED state from WRITER_DBMOD ** state after the entire transaction has been successfully written into the ** database file. In this state the transaction may be committed simply -** by finalizing the journal file. Once in WRITER_FINISHED state, it is -** not possible to modify the database further. At this point, the upper +** by finalizing the journal file. Once in WRITER_FINISHED state, it is +** not possible to modify the database further. At this point, the upper ** layer must either commit or rollback the transaction. ** ** * A write transaction is active. @@ -49826,19 +56512,19 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** * All writing and syncing of journal and database data has finished. ** If no error occurred, all that remains is to finalize the journal to ** commit the transaction. If an error did occur, the caller will need -** to rollback the transaction. +** to rollback the transaction. ** ** ERROR: ** ** The ERROR state is entered when an IO or disk-full error (including -** SQLITE_IOERR_NOMEM) occurs at a point in the code that makes it -** difficult to be sure that the in-memory pager state (cache contents, +** SQLITE_IOERR_NOMEM) occurs at a point in the code that makes it +** difficult to be sure that the in-memory pager state (cache contents, ** db size etc.) are consistent with the contents of the file-system. ** ** Temporary pager files may enter the ERROR state, but in-memory pagers ** cannot. ** -** For example, if an IO error occurs while performing a rollback, +** For example, if an IO error occurs while performing a rollback, ** the contents of the page-cache may be left in an inconsistent state. ** At this point it would be dangerous to change back to READER state ** (as usually happens after a rollback). Any subsequent readers might @@ -49848,13 +56534,13 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** instead of READER following such an error. ** ** Once it has entered the ERROR state, any attempt to use the pager -** to read or write data returns an error. Eventually, once all +** to read or write data returns an error. Eventually, once all ** outstanding transactions have been abandoned, the pager is able to -** transition back to OPEN state, discarding the contents of the +** transition back to OPEN state, discarding the contents of the ** page-cache and any other in-memory state at the same time. Everything -** is reloaded from disk (and, if necessary, hot-journal rollback peformed) +** is reloaded from disk (and, if necessary, hot-journal rollback performed) ** when a read-transaction is next opened on the pager (transitioning -** the pager into READER state). At that point the system has recovered +** the pager into READER state). At that point the system has recovered ** from the error. ** ** Specifically, the pager jumps into the ERROR state if: @@ -49870,21 +56556,21 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** memory. ** ** In other cases, the error is returned to the b-tree layer. The b-tree -** layer then attempts a rollback operation. If the error condition +** layer then attempts a rollback operation. If the error condition ** persists, the pager enters the ERROR state via condition (1) above. ** ** Condition (3) is necessary because it can be triggered by a read-only ** statement executed within a transaction. In this case, if the error ** code were simply returned to the user, the b-tree layer would not ** automatically attempt a rollback, as it assumes that an error in a -** read-only statement cannot leave the pager in an internally inconsistent +** read-only statement cannot leave the pager in an internally inconsistent ** state. ** ** * The Pager.errCode variable is set to something other than SQLITE_OK. ** * There are one or more outstanding references to pages (after the ** last reference is dropped the pager should move back to OPEN state). ** * The pager is not an in-memory pager. -** +** ** ** Notes: ** @@ -49894,7 +56580,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** * Normally, a connection open in exclusive mode is never in PAGER_OPEN ** state. There are two exceptions: immediately after exclusive-mode has -** been turned on (and before any read or write transactions are +** been turned on (and before any read or write transactions are ** executed), and when the pager is leaving the "error state". ** ** * See also: assert_pager_state(). @@ -49908,7 +56594,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ #define PAGER_ERROR 6 /* -** The Pager.eLock variable is almost always set to one of the +** The Pager.eLock variable is almost always set to one of the ** following locking-states, according to the lock currently held on ** the database file: NO_LOCK, SHARED_LOCK, RESERVED_LOCK or EXCLUSIVE_LOCK. ** This variable is kept up to date as locks are taken and released by @@ -49923,20 +56609,20 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** to a less exclusive (lower) value than the lock that is actually held ** at the system level, but it is never set to a more exclusive value. ** -** This is usually safe. If an xUnlock fails or appears to fail, there may +** This is usually safe. If an xUnlock fails or appears to fail, there may ** be a few redundant xLock() calls or a lock may be held for longer than ** required, but nothing really goes wrong. ** ** The exception is when the database file is unlocked as the pager moves -** from ERROR to OPEN state. At this point there may be a hot-journal file +** from ERROR to OPEN state. At this point there may be a hot-journal file ** in the file-system that needs to be rolled back (as part of an OPEN->SHARED ** transition, by the same pager or any other). If the call to xUnlock() ** fails at this point and the pager is left holding an EXCLUSIVE lock, this ** can confuse the call to xCheckReservedLock() call made later as part ** of hot-journal detection. ** -** xCheckReservedLock() is defined as returning true "if there is a RESERVED -** lock held by this process or any others". So xCheckReservedLock may +** xCheckReservedLock() is defined as returning true "if there is a RESERVED +** lock held by this process or any others". So xCheckReservedLock may ** return true because the caller itself is holding an EXCLUSIVE lock (but ** doesn't know it because of a previous error in xUnlock). If this happens ** a hot-journal may be mistaken for a journal being created by an active @@ -49947,32 +56633,18 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** database in the ERROR state, Pager.eLock is set to UNKNOWN_LOCK. It ** is only changed back to a real locking state after a successful call ** to xLock(EXCLUSIVE). Also, the code to do the OPEN->SHARED state transition -** omits the check for a hot-journal if Pager.eLock is set to UNKNOWN_LOCK +** omits the check for a hot-journal if Pager.eLock is set to UNKNOWN_LOCK ** lock. Instead, it assumes a hot-journal exists and obtains an EXCLUSIVE ** lock on the database file before attempting to roll it back. See function ** PagerSharedLock() for more detail. ** -** Pager.eLock may only be set to UNKNOWN_LOCK when the pager is in +** Pager.eLock may only be set to UNKNOWN_LOCK when the pager is in ** PAGER_OPEN state. */ #define UNKNOWN_LOCK (EXCLUSIVE_LOCK+1) /* -** A macro used for invoking the codec if there is one -*/ -#ifdef SQLITE_HAS_CODEC -# define CODEC1(P,D,N,X,E) \ - if( P->xCodec && P->xCodec(P->pCodec,D,N,X)==0 ){ E; } -# define CODEC2(P,D,N,X,E,O) \ - if( P->xCodec==0 ){ O=(char*)D; }else \ - if( (O=(char*)(P->xCodec(P->pCodec,D,N,X)))==0 ){ E; } -#else -# define CODEC1(P,D,N,X,E) /* NO-OP */ -# define CODEC2(P,D,N,X,E,O) O=(char*)D -#endif - -/* -** The maximum allowed sector size. 64KiB. If the xSectorsize() method +** The maximum allowed sector size. 64KiB. If the xSectorsize() method ** returns a value larger than this, then MAX_SECTOR_SIZE is used instead. ** This could conceivably cause corruption following a power failure on ** such a system. This is currently an undocumented limit. @@ -49988,7 +56660,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** When a savepoint is created, the PagerSavepoint.iHdrOffset field is ** set to 0. If a journal-header is written into the main journal while -** the savepoint is active, then iHdrOffset is set to the byte offset +** the savepoint is active, then iHdrOffset is set to the byte offset ** immediately following the last journal record written into the main ** journal before the journal-header. This is required during savepoint ** rollback (see pagerPlaybackSavepoint()). @@ -50000,6 +56672,7 @@ struct PagerSavepoint { Bitvec *pInSavepoint; /* Set of pages in this savepoint */ Pgno nOrig; /* Original number of pages in file */ Pgno iSubRec; /* Index of first record in sub-journal */ + int bTruncateOnRelease; /* If stmt journal may be truncated on RELEASE */ #ifndef SQLITE_OMIT_WAL u32 aWalData[WAL_SAVEPOINT_NDATA]; /* WAL savepoint context */ #endif @@ -50038,44 +56711,44 @@ struct PagerSavepoint { ** ** changeCountDone ** -** This boolean variable is used to make sure that the change-counter -** (the 4-byte header field at byte offset 24 of the database file) is -** not updated more often than necessary. +** This boolean variable is used to make sure that the change-counter +** (the 4-byte header field at byte offset 24 of the database file) is +** not updated more often than necessary. ** -** It is set to true when the change-counter field is updated, which +** It is set to true when the change-counter field is updated, which ** can only happen if an exclusive lock is held on the database file. -** It is cleared (set to false) whenever an exclusive lock is +** It is cleared (set to false) whenever an exclusive lock is ** relinquished on the database file. Each time a transaction is committed, ** The changeCountDone flag is inspected. If it is true, the work of ** updating the change-counter is omitted for the current transaction. ** -** This mechanism means that when running in exclusive mode, a connection +** This mechanism means that when running in exclusive mode, a connection ** need only update the change-counter once, for the first transaction ** committed. ** -** setMaster +** setSuper ** ** When PagerCommitPhaseOne() is called to commit a transaction, it may -** (or may not) specify a master-journal name to be written into the +** (or may not) specify a super-journal name to be written into the ** journal file before it is synced to disk. ** -** Whether or not a journal file contains a master-journal pointer affects -** the way in which the journal file is finalized after the transaction is +** Whether or not a journal file contains a super-journal pointer affects +** the way in which the journal file is finalized after the transaction is ** committed or rolled back when running in "journal_mode=PERSIST" mode. -** If a journal file does not contain a master-journal pointer, it is +** If a journal file does not contain a super-journal pointer, it is ** finalized by overwriting the first journal header with zeroes. If -** it does contain a master-journal pointer the journal file is finalized -** by truncating it to zero bytes, just as if the connection were +** it does contain a super-journal pointer the journal file is finalized +** by truncating it to zero bytes, just as if the connection were ** running in "journal_mode=truncate" mode. ** -** Journal files that contain master journal pointers cannot be finalized +** Journal files that contain super-journal pointers cannot be finalized ** simply by overwriting the first journal-header with zeroes, as the -** master journal pointer could interfere with hot-journal rollback of any +** super-journal pointer could interfere with hot-journal rollback of any ** subsequently interrupted transaction that reuses the journal file. ** ** The flag is cleared as soon as the journal file is finalized (either ** by PagerCommitPhaseTwo or PagerRollback). If an IO error prevents the -** journal file from being successfully finalized, the setMaster flag +** journal file from being successfully finalized, the setSuper flag ** is cleared anyway (and the pager will move to ERROR state). ** ** doNotSpill @@ -50091,12 +56764,12 @@ struct PagerSavepoint { ** to allocate a new page to prevent the journal file from being written ** while it is being traversed by code in pager_playback(). The SPILLFLAG_OFF ** case is a user preference. -** +** ** If the SPILLFLAG_NOSYNC bit is set, writing to the database from ** pagerStress() is permitted, but syncing the journal file is not. ** This flag is set by sqlite3PagerWrite() when the file-system sector-size ** is larger than the database page-size in order to prevent a journal sync -** from happening in between the journalling of two pages on the same sector. +** from happening in between the journalling of two pages on the same sector. ** ** subjInMemory ** @@ -50104,16 +56777,16 @@ struct PagerSavepoint { ** is opened as an in-memory journal file. If false, then in-memory ** sub-journals are only used for in-memory pager files. ** -** This variable is updated by the upper layer each time a new +** This variable is updated by the upper layer each time a new ** write-transaction is opened. ** ** dbSize, dbOrigSize, dbFileSize ** ** Variable dbSize is set to the number of pages in the database file. ** It is valid in PAGER_READER and higher states (all states except for -** OPEN and ERROR). +** OPEN and ERROR). ** -** dbSize is set based on the size of the database file, which may be +** dbSize is set based on the size of the database file, which may be ** larger than the size of the database (the value stored at offset ** 28 of the database header by the btree). If the size of the file ** is not an integer multiple of the page-size, the value stored in @@ -50124,10 +56797,10 @@ struct PagerSavepoint { ** ** During a write-transaction, if pages with page-numbers greater than ** dbSize are modified in the cache, dbSize is updated accordingly. -** Similarly, if the database is truncated using PagerTruncateImage(), +** Similarly, if the database is truncated using PagerTruncateImage(), ** dbSize is updated. ** -** Variables dbOrigSize and dbFileSize are valid in states +** Variables dbOrigSize and dbFileSize are valid in states ** PAGER_WRITER_LOCKED and higher. dbOrigSize is a copy of the dbSize ** variable at the start of the transaction. It is used during rollback, ** and to determine whether or not pages need to be journalled before @@ -50136,12 +56809,12 @@ struct PagerSavepoint { ** Throughout a write-transaction, dbFileSize contains the size of ** the file on disk in pages. It is set to a copy of dbSize when the ** write-transaction is first opened, and updated when VFS calls are made -** to write or truncate the database file on disk. +** to write or truncate the database file on disk. ** -** The only reason the dbFileSize variable is required is to suppress -** unnecessary calls to xTruncate() after committing a transaction. If, -** when a transaction is committed, the dbFileSize variable indicates -** that the database file is larger than the database image (Pager.dbSize), +** The only reason the dbFileSize variable is required is to suppress +** unnecessary calls to xTruncate() after committing a transaction. If, +** when a transaction is committed, the dbFileSize variable indicates +** that the database file is larger than the database image (Pager.dbSize), ** pager_truncate() is called. The pager_truncate() call uses xFilesize() ** to measure the database file on disk, and then truncates it if required. ** dbFileSize is not used when rolling back a transaction. In this case @@ -50152,20 +56825,20 @@ struct PagerSavepoint { ** dbHintSize ** ** The dbHintSize variable is used to limit the number of calls made to -** the VFS xFileControl(FCNTL_SIZE_HINT) method. +** the VFS xFileControl(FCNTL_SIZE_HINT) method. ** ** dbHintSize is set to a copy of the dbSize variable when a ** write-transaction is opened (at the same time as dbFileSize and ** dbOrigSize). If the xFileControl(FCNTL_SIZE_HINT) method is called, ** dbHintSize is increased to the number of pages that correspond to the -** size-hint passed to the method call. See pager_write_pagelist() for +** size-hint passed to the method call. See pager_write_pagelist() for ** details. ** ** errCode ** ** The Pager.errCode variable is only ever used in PAGER_ERROR state. It -** is set to zero in all other states. In PAGER_ERROR state, Pager.errCode -** is always set to SQLITE_FULL, SQLITE_IOERR or one of the SQLITE_IOERR_XXX +** is set to zero in all other states. In PAGER_ERROR state, Pager.errCode +** is always set to SQLITE_FULL, SQLITE_IOERR or one of the SQLITE_IOERR_XXX ** sub-codes. ** ** syncFlags, walSyncFlags @@ -50194,6 +56867,7 @@ struct Pager { u8 noLock; /* Do not lock (except in WAL mode) */ u8 readOnly; /* True for a read-only database */ u8 memDb; /* True to inhibit all file I/O */ + u8 memVfs; /* VFS-implemented memory database */ /************************************************************************** ** The following block contains those class members that change during @@ -50207,7 +56881,7 @@ struct Pager { u8 eState; /* Pager state (OPEN, READER, WRITER_LOCKED..) */ u8 eLock; /* Current lock held on database file */ u8 changeCountDone; /* Set after incrementing the change-counter */ - u8 setMaster; /* True if a m-j name has been written to jrnl */ + u8 setSuper; /* Super-jrnl name is written into jrnl */ u8 doNotSpill; /* Do not spill the cache when non-zero */ u8 subjInMemory; /* True to use in-memory sub-journals */ u8 bUseFetch; /* True to use xFetch() */ @@ -50243,8 +56917,9 @@ struct Pager { i16 nReserve; /* Number of unused bytes at end of each page */ u32 vfsFlags; /* Flags for sqlite3_vfs.xOpen() */ u32 sectorSize; /* Assumed sector size during rollback */ - int pageSize; /* Number of bytes in a page */ Pgno mxPgno; /* Maximum allowed size of the database */ + Pgno lckPgno; /* Page number for the locking page */ + i64 pageSize; /* Number of bytes in a page */ i64 journalSizeLimit; /* Size limit for persistent journal files */ char *zFilename; /* Name of the database file */ char *zJournal; /* Name of the journal file */ @@ -50256,12 +56931,6 @@ struct Pager { #endif void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */ int (*xGet)(Pager*,Pgno,DbPage**,int); /* Routine to fetch a patch */ -#ifdef SQLITE_HAS_CODEC - void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */ - void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */ - void (*xCodecFree)(void*); /* Destructor for the codec */ - void *pCodec; /* First argument to xCodec... methods */ -#endif char *pTmpSpace; /* Pager.pageSize bytes of space for tmp use */ PCache *pPCache; /* Pointer to page cache object */ #ifndef SQLITE_OMIT_WAL @@ -50272,7 +56941,7 @@ struct Pager { /* ** Indexes for use with Pager.aStat[]. The Pager.aStat[] array contains -** the values accessed by passing SQLITE_DBSTATUS_CACHE_HIT, CACHE_MISS +** the values accessed by passing SQLITE_DBSTATUS_CACHE_HIT, CACHE_MISS ** or CACHE_WRITE to sqlite3_db_status(). */ #define PAGER_STAT_HIT 0 @@ -50330,7 +56999,7 @@ static const unsigned char aJournalMagic[] = { #define JOURNAL_PG_SZ(pPager) ((pPager->pageSize) + 8) /* -** The journal header size for this pager. This is usually the same +** The journal header size for this pager. This is usually the same ** size as a single disk sector. See also setSectorSize(). */ #define JOURNAL_HDR_SZ(pPager) (pPager->sectorSize) @@ -50357,11 +57026,6 @@ static const unsigned char aJournalMagic[] = { # define USEFETCH(x) 0 #endif -/* -** The maximum legal page number is (2^31 - 1). -*/ -#define PAGER_MAX_PGNO 2147483647 - /* ** The argument to this macro is a file descriptor (type sqlite3_file*). ** Return 0 if it is not open, or non-zero (but not 1) if it is. @@ -50376,19 +57040,30 @@ static const unsigned char aJournalMagic[] = { */ #define isOpen(pFd) ((pFd)->pMethods!=0) +#ifdef SQLITE_DIRECT_OVERFLOW_READ /* -** Return true if this pager uses a write-ahead log to read page pgno. -** Return false if the pager reads pgno directly from the database. +** Return true if page pgno can be read directly from the database file +** by the b-tree layer. This is the case if: +** +** * the database file is open, +** * there are no dirty pages in the cache, and +** * the desired page is not currently in the wal file. */ -#if !defined(SQLITE_OMIT_WAL) && defined(SQLITE_DIRECT_OVERFLOW_READ) -SQLITE_PRIVATE int sqlite3PagerUseWal(Pager *pPager, Pgno pgno){ - u32 iRead = 0; - int rc; - if( pPager->pWal==0 ) return 0; - rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iRead); - return rc || iRead; +SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno){ + if( pPager->fd->pMethods==0 ) return 0; + if( sqlite3PCacheIsDirty(pPager->pPCache) ) return 0; +#ifndef SQLITE_OMIT_WAL + if( pPager->pWal ){ + u32 iRead = 0; + int rc; + rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iRead); + return (rc==SQLITE_OK && iRead==0); + } +#endif + return 1; } #endif + #ifndef SQLITE_OMIT_WAL # define pagerUseWal(x) ((x)->pWal!=0) #else @@ -50399,7 +57074,7 @@ SQLITE_PRIVATE int sqlite3PagerUseWal(Pager *pPager, Pgno pgno){ # define pagerBeginReadTransaction(z) SQLITE_OK #endif -#ifndef NDEBUG +#ifndef NDEBUG /* ** Usage: ** @@ -50428,25 +57103,25 @@ static int assert_pager_state(Pager *p){ assert( p->tempFile==0 || p->eLock==EXCLUSIVE_LOCK ); assert( p->tempFile==0 || pPager->changeCountDone ); - /* If the useJournal flag is clear, the journal-mode must be "OFF". + /* If the useJournal flag is clear, the journal-mode must be "OFF". ** And if the journal-mode is "OFF", the journal file must not be open. */ assert( p->journalMode==PAGER_JOURNALMODE_OFF || p->useJournal ); assert( p->journalMode!=PAGER_JOURNALMODE_OFF || !isOpen(p->jfd) ); - /* Check that MEMDB implies noSync. And an in-memory journal. Since - ** this means an in-memory pager performs no IO at all, it cannot encounter - ** either SQLITE_IOERR or SQLITE_FULL during rollback or while finalizing - ** a journal file. (although the in-memory journal implementation may - ** return SQLITE_IOERR_NOMEM while the journal file is being written). It - ** is therefore not possible for an in-memory pager to enter the ERROR + /* Check that MEMDB implies noSync. And an in-memory journal. Since + ** this means an in-memory pager performs no IO at all, it cannot encounter + ** either SQLITE_IOERR or SQLITE_FULL during rollback or while finalizing + ** a journal file. (although the in-memory journal implementation may + ** return SQLITE_IOERR_NOMEM while the journal file is being written). It + ** is therefore not possible for an in-memory pager to enter the ERROR ** state. */ if( MEMDB ){ assert( !isOpen(p->fd) ); assert( p->noSync ); - assert( p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_MEMORY + assert( p->journalMode==PAGER_JOURNALMODE_OFF + || p->journalMode==PAGER_JOURNALMODE_MEMORY ); assert( p->eState!=PAGER_ERROR && p->eState!=PAGER_OPEN ); assert( pagerUseWal(p)==0 ); @@ -50480,7 +57155,7 @@ static int assert_pager_state(Pager *p){ assert( pPager->dbSize==pPager->dbOrigSize ); assert( pPager->dbOrigSize==pPager->dbFileSize ); assert( pPager->dbOrigSize==pPager->dbHintSize ); - assert( pPager->setMaster==0 ); + assert( pPager->setSuper==0 ); break; case PAGER_WRITER_CACHEMOD: @@ -50493,9 +57168,9 @@ static int assert_pager_state(Pager *p){ ** to journal_mode=wal. */ assert( p->eLock>=RESERVED_LOCK ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL + assert( isOpen(p->jfd) + || p->journalMode==PAGER_JOURNALMODE_OFF + || p->journalMode==PAGER_JOURNALMODE_WAL ); } assert( pPager->dbOrigSize==pPager->dbFileSize ); @@ -50507,9 +57182,9 @@ static int assert_pager_state(Pager *p){ assert( pPager->errCode==SQLITE_OK ); assert( !pagerUseWal(pPager) ); assert( p->eLock>=EXCLUSIVE_LOCK ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL + assert( isOpen(p->jfd) + || p->journalMode==PAGER_JOURNALMODE_OFF + || p->journalMode==PAGER_JOURNALMODE_WAL || (sqlite3OsDeviceCharacteristics(p->fd)&SQLITE_IOCAP_BATCH_ATOMIC) ); assert( pPager->dbOrigSize<=pPager->dbHintSize ); @@ -50519,9 +57194,9 @@ static int assert_pager_state(Pager *p){ assert( p->eLock==EXCLUSIVE_LOCK ); assert( pPager->errCode==SQLITE_OK ); assert( !pagerUseWal(pPager) ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL + assert( isOpen(p->jfd) + || p->journalMode==PAGER_JOURNALMODE_OFF + || p->journalMode==PAGER_JOURNALMODE_WAL || (sqlite3OsDeviceCharacteristics(p->fd)&SQLITE_IOCAP_BATCH_ATOMIC) ); break; @@ -50540,7 +57215,7 @@ static int assert_pager_state(Pager *p){ } #endif /* ifndef NDEBUG */ -#ifdef SQLITE_DEBUG +#ifdef SQLITE_DEBUG /* ** Return a pointer to a human readable string in a static buffer ** containing the state of the Pager object passed as an argument. This @@ -50548,8 +57223,12 @@ static int assert_pager_state(Pager *p){ ** to "print *pPager" in gdb: ** ** (gdb) printf "%s", print_pager_state(pPager) +** +** This routine has external linkage in order to suppress compiler warnings +** about an unused function. It is enclosed within SQLITE_DEBUG and so does +** not appear in normal builds. */ -static char *print_pager_state(Pager *p){ +char *print_pager_state(Pager *p){ static char zRet[1024]; sqlite3_snprintf(1024, zRet, @@ -50606,11 +57285,7 @@ static void setGetterMethod(Pager *pPager){ if( pPager->errCode ){ pPager->xGet = getPageError; #if SQLITE_MAX_MMAP_SIZE>0 - }else if( USEFETCH(pPager) -#ifdef SQLITE_HAS_CODEC - && pPager->xCodec==0 -#endif - ){ + }else if( USEFETCH(pPager) ){ pPager->xGet = getPageMMap; #endif /* SQLITE_MAX_MMAP_SIZE>0 */ }else{ @@ -50635,6 +57310,9 @@ static int subjRequiresPage(PgHdr *pPg){ for(i=0; inSavepoint; i++){ p = &pPager->aSavepoint[i]; if( p->nOrig>=pgno && 0==sqlite3BitvecTestNotNull(p->pInSavepoint, pgno) ){ + for(i=i+1; inSavepoint; i++){ + pPager->aSavepoint[i].bTruncateOnRelease = 0; + } return 1; } } @@ -50688,7 +57366,7 @@ static int write32bits(sqlite3_file *fd, i64 offset, u32 val){ ** succeeds, set the Pager.eLock variable to match the (attempted) new lock. ** ** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is -** called, do not modify it. See the comment above the #define of +** called, do not modify it. See the comment above the #define of ** UNKNOWN_LOCK for an explanation of this. */ static int pagerUnlockDb(Pager *pPager, int eLock){ @@ -50705,17 +57383,18 @@ static int pagerUnlockDb(Pager *pPager, int eLock){ } IOTRACE(("UNLOCK %p %d\n", pPager, eLock)) } + pPager->changeCountDone = pPager->tempFile; /* ticket fb3b3024ea238d5c */ return rc; } /* ** Lock the database file to level eLock, which must be either SHARED_LOCK, ** RESERVED_LOCK or EXCLUSIVE_LOCK. If the caller is successful, set the -** Pager.eLock variable to the new locking state. +** Pager.eLock variable to the new locking state. ** -** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is -** called, do not modify it unless the new locking state is EXCLUSIVE_LOCK. -** See the comment above the #define of UNKNOWN_LOCK for an explanation +** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is +** called, do not modify it unless the new locking state is EXCLUSIVE_LOCK. +** See the comment above the #define of UNKNOWN_LOCK for an explanation ** of this. */ static int pagerLockDb(Pager *pPager, int eLock){ @@ -50742,7 +57421,7 @@ static int pagerLockDb(Pager *pPager, int eLock){ ** (b) the value returned by OsSectorSize() is less than or equal ** to the page size. ** -** If it can be used, then the value returned is the size of the journal +** If it can be used, then the value returned is the size of the journal ** file when it contains rollback data for exactly one page. ** ** The atomic-batch-write optimization can be used if OsDeviceCharacteristics() @@ -50833,72 +57512,73 @@ static void checkPage(PgHdr *pPg){ /* ** When this is called the journal file for pager pPager must be open. -** This function attempts to read a master journal file name from the -** end of the file and, if successful, copies it into memory supplied -** by the caller. See comments above writeMasterJournal() for the format -** used to store a master journal file name at the end of a journal file. +** This function attempts to read a super-journal file name from the +** end of the file and, if successful, copies it into memory supplied +** by the caller. See comments above writeSuperJournal() for the format +** used to store a super-journal file name at the end of a journal file. ** -** zMaster must point to a buffer of at least nMaster bytes allocated by +** zSuper must point to a buffer of at least nSuper bytes allocated by ** the caller. This should be sqlite3_vfs.mxPathname+1 (to ensure there is -** enough space to write the master journal name). If the master journal -** name in the journal is longer than nMaster bytes (including a -** nul-terminator), then this is handled as if no master journal name +** enough space to write the super-journal name). If the super-journal +** name in the journal is longer than nSuper bytes (including a +** nul-terminator), then this is handled as if no super-journal name ** were present in the journal. ** -** If a master journal file name is present at the end of the journal -** file, then it is copied into the buffer pointed to by zMaster. A -** nul-terminator byte is appended to the buffer following the master -** journal file name. +** If a super-journal file name is present at the end of the journal +** file, then it is copied into the buffer pointed to by zSuper. A +** nul-terminator byte is appended to the buffer following the +** super-journal file name. ** -** If it is determined that no master journal file name is present -** zMaster[0] is set to 0 and SQLITE_OK returned. +** If it is determined that no super-journal file name is present +** zSuper[0] is set to 0 and SQLITE_OK returned. ** ** If an error occurs while reading from the journal file, an SQLite ** error code is returned. */ -static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){ +static int readSuperJournal(sqlite3_file *pJrnl, char *zSuper, u32 nSuper){ int rc; /* Return code */ - u32 len; /* Length in bytes of master journal name */ + u32 len; /* Length in bytes of super-journal name */ i64 szJ; /* Total size in bytes of journal file pJrnl */ u32 cksum; /* MJ checksum value read from journal */ u32 u; /* Unsigned loop counter */ unsigned char aMagic[8]; /* A buffer to hold the magic header */ - zMaster[0] = '\0'; + zSuper[0] = '\0'; if( SQLITE_OK!=(rc = sqlite3OsFileSize(pJrnl, &szJ)) || szJ<16 || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-16, &len)) - || len>=nMaster + || len>=nSuper || len>szJ-16 - || len==0 + || len==0 || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-12, &cksum)) || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, aMagic, 8, szJ-8)) || memcmp(aMagic, aJournalMagic, 8) - || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zMaster, len, szJ-16-len)) + || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zSuper, len, szJ-16-len)) ){ return rc; } - /* See if the checksum matches the master journal name */ + /* See if the checksum matches the super-journal name */ for(u=0; ujournalOff, assuming a sector +** Return the offset of the sector boundary at or immediately +** following the value in pPager->journalOff, assuming a sector ** size of pPager->sectorSize bytes. ** ** i.e for a sector size of 512: @@ -50909,7 +57589,7 @@ static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){ ** 512 512 ** 100 512 ** 2000 2048 -** +** */ static i64 journalHdrOffset(Pager *pPager){ i64 offset = 0; @@ -50931,12 +57611,12 @@ static i64 journalHdrOffset(Pager *pPager){ ** ** If doTruncate is non-zero or the Pager.journalSizeLimit variable is ** set to 0, then truncate the journal file to zero bytes in size. Otherwise, -** zero the 28-byte header at the start of the journal file. In either case, -** if the pager is not in no-sync mode, sync the journal file immediately +** zero the 28-byte header at the start of the journal file. In either case, +** if the pager is not in no-sync mode, sync the journal file immediately ** after writing or truncating it. ** ** If Pager.journalSizeLimit is set to a positive, non-zero value, and -** following the truncation or zeroing described above the size of the +** following the truncation or zeroing described above the size of the ** journal file in bytes is larger than this value, then truncate the ** journal file to Pager.journalSizeLimit bytes. The journal file does ** not need to be synced following this operation. @@ -50962,8 +57642,8 @@ static int zeroJournalHdr(Pager *pPager, int doTruncate){ rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_DATAONLY|pPager->syncFlags); } - /* At this point the transaction is committed but the write lock - ** is still held on the file. If there is a size limit configured for + /* At this point the transaction is committed but the write lock + ** is still held on the file. If there is a size limit configured for ** the persistent journal and the journal file currently consumes more ** space than that limit allows for, truncate it now. There is no need ** to sync the file following this operation. @@ -50991,7 +57671,7 @@ static int zeroJournalHdr(Pager *pPager, int doTruncate){ ** - 4 bytes: Initial database page count. ** - 4 bytes: Sector size used by the process that wrote this journal. ** - 4 bytes: Database page size. -** +** ** Followed by (JOURNAL_HDR_SZ - 28) bytes of unused space. */ static int writeJournalHdr(Pager *pPager){ @@ -51007,8 +57687,8 @@ static int writeJournalHdr(Pager *pPager){ nHeader = JOURNAL_HDR_SZ(pPager); } - /* If there are active savepoints and any of them were created - ** since the most recent journal header was written, update the + /* If there are active savepoints and any of them were created + ** since the most recent journal header was written, update the ** PagerSavepoint.iHdrOffset fields now. */ for(ii=0; iinSavepoint; ii++){ @@ -51019,10 +57699,10 @@ static int writeJournalHdr(Pager *pPager){ pPager->journalHdr = pPager->journalOff = journalHdrOffset(pPager); - /* + /* ** Write the nRec Field - the number of page records that follow this ** journal header. Normally, zero is written to this value at this time. - ** After the records are added to the journal (and the journal synced, + ** After the records are added to the journal (and the journal synced, ** if in full-sync mode), the zero is overwritten with the true number ** of records (see syncJournal()). ** @@ -51041,7 +57721,7 @@ static int writeJournalHdr(Pager *pPager){ */ assert( isOpen(pPager->fd) || pPager->noSync ); if( pPager->noSync || (pPager->journalMode==PAGER_JOURNALMODE_MEMORY) - || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND) + || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND) ){ memcpy(zHeader, aJournalMagic, sizeof(aJournalMagic)); put32bits(&zHeader[sizeof(aJournalMagic)], 0xffffffff); @@ -51049,7 +57729,7 @@ static int writeJournalHdr(Pager *pPager){ memset(zHeader, 0, sizeof(aJournalMagic)+4); } - /* The random check-hash initializer */ + /* The random check-hash initializer */ sqlite3_randomness(sizeof(pPager->cksumInit), &pPager->cksumInit); put32bits(&zHeader[sizeof(aJournalMagic)+4], pPager->cksumInit); /* The initial database size */ @@ -51068,23 +57748,23 @@ static int writeJournalHdr(Pager *pPager){ memset(&zHeader[sizeof(aJournalMagic)+20], 0, nHeader-(sizeof(aJournalMagic)+20)); - /* In theory, it is only necessary to write the 28 bytes that the - ** journal header consumes to the journal file here. Then increment the - ** Pager.journalOff variable by JOURNAL_HDR_SZ so that the next + /* In theory, it is only necessary to write the 28 bytes that the + ** journal header consumes to the journal file here. Then increment the + ** Pager.journalOff variable by JOURNAL_HDR_SZ so that the next ** record is written to the following sector (leaving a gap in the file ** that will be implicitly filled in by the OS). ** - ** However it has been discovered that on some systems this pattern can + ** However it has been discovered that on some systems this pattern can ** be significantly slower than contiguously writing data to the file, - ** even if that means explicitly writing data to the block of + ** even if that means explicitly writing data to the block of ** (JOURNAL_HDR_SZ - 28) bytes that will not be used. So that is what - ** is done. + ** is done. ** - ** The loop is required here in case the sector-size is larger than the + ** The loop is required here in case the sector-size is larger than the ** database page size. Since the zHeader buffer is only Pager.pageSize ** bytes in size, more than one call to sqlite3OsWrite() may be required ** to populate the entire journal header sector. - */ + */ for(nWrite=0; rc==SQLITE_OK&&nWritejournalHdr, nHeader)) rc = sqlite3OsWrite(pPager->jfd, zHeader, nHeader, pPager->journalOff); @@ -51182,29 +57862,29 @@ static int readJournalHdr( /* Check that the values read from the page-size and sector-size fields ** are within range. To be 'in range', both values need to be a power - ** of two greater than or equal to 512 or 32, and not greater than their + ** of two greater than or equal to 512 or 32, and not greater than their ** respective compile time maximum limits. */ if( iPageSize<512 || iSectorSize<32 || iPageSize>SQLITE_MAX_PAGE_SIZE || iSectorSize>MAX_SECTOR_SIZE - || ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0 + || ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0 ){ - /* If the either the page-size or sector-size in the journal-header is - ** invalid, then the process that wrote the journal-header must have - ** crashed before the header was synced. In this case stop reading + /* If the either the page-size or sector-size in the journal-header is + ** invalid, then the process that wrote the journal-header must have + ** crashed before the header was synced. In this case stop reading ** the journal file here. */ return SQLITE_DONE; } - /* Update the page-size to match the value read from the journal. - ** Use a testcase() macro to make sure that malloc failure within + /* Update the page-size to match the value read from the journal. + ** Use a testcase() macro to make sure that malloc failure within ** PagerSetPagesize() is tested. */ rc = sqlite3PagerSetPagesize(pPager, &iPageSize, -1); testcase( rc!=SQLITE_OK ); - /* Update the assumed sector-size to match the value used by + /* Update the assumed sector-size to match the value used by ** the process that created this journal. If this journal was ** created by a process other than this one, then this routine ** is being called from within pager_playback(). The local value @@ -51219,50 +57899,50 @@ static int readJournalHdr( /* -** Write the supplied master journal name into the journal file for pager -** pPager at the current location. The master journal name must be the last +** Write the supplied super-journal name into the journal file for pager +** pPager at the current location. The super-journal name must be the last ** thing written to a journal file. If the pager is in full-sync mode, the ** journal file descriptor is advanced to the next sector boundary before ** anything is written. The format is: ** -** + 4 bytes: PAGER_MJ_PGNO. -** + N bytes: Master journal filename in utf-8. -** + 4 bytes: N (length of master journal name in bytes, no nul-terminator). -** + 4 bytes: Master journal name checksum. +** + 4 bytes: PAGER_SJ_PGNO. +** + N bytes: super-journal filename in utf-8. +** + 4 bytes: N (length of super-journal name in bytes, no nul-terminator). +** + 4 bytes: super-journal name checksum. ** + 8 bytes: aJournalMagic[]. ** -** The master journal page checksum is the sum of the bytes in the master -** journal name, where each byte is interpreted as a signed 8-bit integer. +** The super-journal page checksum is the sum of the bytes in the super-journal +** name, where each byte is interpreted as a signed 8-bit integer. ** -** If zMaster is a NULL pointer (occurs for a single database transaction), +** If zSuper is a NULL pointer (occurs for a single database transaction), ** this call is a no-op. */ -static int writeMasterJournal(Pager *pPager, const char *zMaster){ +static int writeSuperJournal(Pager *pPager, const char *zSuper){ int rc; /* Return code */ - int nMaster; /* Length of string zMaster */ + int nSuper; /* Length of string zSuper */ i64 iHdrOff; /* Offset of header in journal file */ i64 jrnlSize; /* Size of journal file on disk */ - u32 cksum = 0; /* Checksum of string zMaster */ + u32 cksum = 0; /* Checksum of string zSuper */ - assert( pPager->setMaster==0 ); + assert( pPager->setSuper==0 ); assert( !pagerUseWal(pPager) ); - if( !zMaster - || pPager->journalMode==PAGER_JOURNALMODE_MEMORY + if( !zSuper + || pPager->journalMode==PAGER_JOURNALMODE_MEMORY || !isOpen(pPager->jfd) ){ return SQLITE_OK; } - pPager->setMaster = 1; + pPager->setSuper = 1; assert( pPager->journalHdr <= pPager->journalOff ); - /* Calculate the length in bytes and the checksum of zMaster */ - for(nMaster=0; zMaster[nMaster]; nMaster++){ - cksum += zMaster[nMaster]; + /* Calculate the length in bytes and the checksum of zSuper */ + for(nSuper=0; zSuper[nSuper]; nSuper++){ + cksum += zSuper[nSuper]; } /* If in full-sync mode, advance to the next disk sector before writing - ** the master journal name. This is in case the previous page written to + ** the super-journal name. This is in case the previous page written to ** the journal has already been synced. */ if( pPager->fullSync ){ @@ -51270,30 +57950,30 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){ } iHdrOff = pPager->journalOff; - /* Write the master journal data to the end of the journal file. If + /* Write the super-journal data to the end of the journal file. If ** an error occurs, return the error code to the caller. */ - if( (0 != (rc = write32bits(pPager->jfd, iHdrOff, PAGER_MJ_PGNO(pPager)))) - || (0 != (rc = sqlite3OsWrite(pPager->jfd, zMaster, nMaster, iHdrOff+4))) - || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster, nMaster))) - || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster+4, cksum))) + if( (0 != (rc = write32bits(pPager->jfd, iHdrOff, PAGER_SJ_PGNO(pPager)))) + || (0 != (rc = sqlite3OsWrite(pPager->jfd, zSuper, nSuper, iHdrOff+4))) + || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper, nSuper))) + || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper+4, cksum))) || (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8, - iHdrOff+4+nMaster+8))) + iHdrOff+4+nSuper+8))) ){ return rc; } - pPager->journalOff += (nMaster+20); + pPager->journalOff += (nSuper+20); - /* If the pager is in peristent-journal mode, then the physical - ** journal-file may extend past the end of the master-journal name - ** and 8 bytes of magic data just written to the file. This is + /* If the pager is in persistent-journal mode, then the physical + ** journal-file may extend past the end of the super-journal name + ** and 8 bytes of magic data just written to the file. This is ** dangerous because the code to rollback a hot-journal file - ** will not be able to find the master-journal name to determine - ** whether or not the journal is hot. + ** will not be able to find the super-journal name to determine + ** whether or not the journal is hot. ** - ** Easiest thing to do in this scenario is to truncate the journal + ** Easiest thing to do in this scenario is to truncate the journal ** file to the required size. - */ + */ if( SQLITE_OK==(rc = sqlite3OsFileSize(pPager->jfd, &jrnlSize)) && jrnlSize>pPager->journalOff ){ @@ -51315,7 +57995,6 @@ static void pager_reset(Pager *pPager){ ** Return the pPager->iDataVersion value */ SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager *pPager){ - assert( pPager->eState>PAGER_OPEN ); return pPager->iDataVersion; } @@ -51339,7 +58018,7 @@ static void releaseAllSavepoints(Pager *pPager){ } /* -** Set the bit number pgno in the PagerSavepoint.pInSavepoint +** Set the bit number pgno in the PagerSavepoint.pInSavepoint ** bitvecs of all open savepoints. Return SQLITE_OK if successful ** or SQLITE_NOMEM if a malloc failure occurs. */ @@ -51368,8 +58047,8 @@ static int addToSavepointBitvecs(Pager *pPager, Pgno pgno){ ** not exhibit the UNDELETABLE_WHEN_OPEN property, the journal file is ** closed (if it is open). ** -** If the pager is in ERROR state when this function is called, the -** contents of the pager cache are discarded before switching back to +** If the pager is in ERROR state when this function is called, the +** contents of the pager cache are discarded before switching back to ** the OPEN state. Regardless of whether the pager is in exclusive-mode ** or not, any journal file left in the file-system will be treated ** as a hot-journal and rolled back the next time a read-transaction @@ -51377,9 +58056,9 @@ static int addToSavepointBitvecs(Pager *pPager, Pgno pgno){ */ static void pager_unlock(Pager *pPager){ - assert( pPager->eState==PAGER_READER - || pPager->eState==PAGER_OPEN - || pPager->eState==PAGER_ERROR + assert( pPager->eState==PAGER_READER + || pPager->eState==PAGER_OPEN + || pPager->eState==PAGER_ERROR ); sqlite3BitvecDestroy(pPager->pInJournal); @@ -51426,7 +58105,6 @@ static void pager_unlock(Pager *pPager){ ** code is cleared and the cache reset in the block below. */ assert( pPager->errCode || pPager->eState!=PAGER_ERROR ); - pPager->changeCountDone = 0; pPager->eState = PAGER_OPEN; } @@ -51451,23 +58129,23 @@ static void pager_unlock(Pager *pPager){ pPager->journalOff = 0; pPager->journalHdr = 0; - pPager->setMaster = 0; + pPager->setSuper = 0; } /* ** This function is called whenever an IOERR or FULL error that requires -** the pager to transition into the ERROR state may ahve occurred. -** The first argument is a pointer to the pager structure, the second -** the error-code about to be returned by a pager API function. The -** value returned is a copy of the second argument to this function. +** the pager to transition into the ERROR state may have occurred. +** The first argument is a pointer to the pager structure, the second +** the error-code about to be returned by a pager API function. The +** value returned is a copy of the second argument to this function. ** ** If the second argument is SQLITE_FULL, SQLITE_IOERR or one of the ** IOERR sub-codes, the pager enters the ERROR state and the error code ** is stored in Pager.errCode. While the pager remains in the ERROR state, ** all major API calls on the Pager will immediately return Pager.errCode. ** -** The ERROR state indicates that the contents of the pager-cache -** cannot be trusted. This state can be cleared by completely discarding +** The ERROR state indicates that the contents of the pager-cache +** cannot be trusted. This state can be cleared by completely discarding ** the contents of the pager-cache. If a transaction was active when ** the persistent error occurred, then the rollback journal may need ** to be replayed to restore the contents of the database file (as if @@ -51515,27 +58193,27 @@ static int pagerFlushOnCommit(Pager *pPager, int bCommit){ } /* -** This routine ends a transaction. A transaction is usually ended by -** either a COMMIT or a ROLLBACK operation. This routine may be called +** This routine ends a transaction. A transaction is usually ended by +** either a COMMIT or a ROLLBACK operation. This routine may be called ** after rollback of a hot-journal, or if an error occurs while opening ** the journal file or writing the very first journal-header of a ** database transaction. -** +** ** This routine is never called in PAGER_ERROR state. If it is called ** in PAGER_NONE or PAGER_SHARED state and the lock held is less ** exclusive than a RESERVED lock, it is a no-op. ** ** Otherwise, any active savepoints are released. ** -** If the journal file is open, then it is "finalized". Once a journal -** file has been finalized it is not possible to use it to roll back a +** If the journal file is open, then it is "finalized". Once a journal +** file has been finalized it is not possible to use it to roll back a ** transaction. Nor will it be considered to be a hot-journal by this ** or any other database connection. Exactly how a journal is finalized ** depends on whether or not the pager is running in exclusive mode and ** the current journal-mode (Pager.journalMode value), as follows: ** ** journalMode==MEMORY -** Journal file descriptor is simply closed. This destroys an +** Journal file descriptor is simply closed. This destroys an ** in-memory journal. ** ** journalMode==TRUNCATE @@ -51555,19 +58233,19 @@ static int pagerFlushOnCommit(Pager *pPager, int bCommit){ ** journalMode==PERSIST is used instead. ** ** After the journal is finalized, the pager moves to PAGER_READER state. -** If running in non-exclusive rollback mode, the lock on the file is +** If running in non-exclusive rollback mode, the lock on the file is ** downgraded to a SHARED_LOCK. ** ** SQLITE_OK is returned if no error occurs. If an error occurs during ** any of the IO operations to finalize the journal file or unlock the -** database then the IO error code is returned to the user. If the +** database then the IO error code is returned to the user. If the ** operation to finalize the journal file fails, then the code still ** tries to unlock the database file if not in exclusive mode. If the ** unlock operation fails as well, then the first error code related ** to the first error encountered (the journal finalization one) is ** returned. */ -static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ +static int pager_end_transaction(Pager *pPager, int hasSuper, int bCommit){ int rc = SQLITE_OK; /* Error code from journal finalization operation */ int rc2 = SQLITE_OK; /* Error code from db file unlock operation */ @@ -51579,9 +58257,9 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ ** 1. After a successful hot-journal rollback, it is called with ** eState==PAGER_NONE and eLock==EXCLUSIVE_LOCK. ** - ** 2. If a connection with locking_mode=exclusive holding an EXCLUSIVE + ** 2. If a connection with locking_mode=exclusive holding an EXCLUSIVE ** lock switches back to locking_mode=normal and then executes a - ** read-transaction, this function is called with eState==PAGER_READER + ** read-transaction, this function is called with eState==PAGER_READER ** and eLock==EXCLUSIVE_LOCK when the read-transaction is closed. */ assert( assert_pager_state(pPager) ); @@ -51591,7 +58269,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ } releaseAllSavepoints(pPager); - assert( isOpen(pPager->jfd) || pPager->pInJournal==0 + assert( isOpen(pPager->jfd) || pPager->pInJournal==0 || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_BATCH_ATOMIC) ); if( isOpen(pPager->jfd) ){ @@ -51619,7 +58297,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL) ){ - rc = zeroJournalHdr(pPager, hasMaster||pPager->tempFile); + rc = zeroJournalHdr(pPager, hasSuper||pPager->tempFile); pPager->journalOff = 0; }else{ /* This branch may be executed with Pager.journalMode==MEMORY if @@ -51629,9 +58307,9 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ */ int bDelete = !pPager->tempFile; assert( sqlite3JournalIsInMemory(pPager->jfd)==0 ); - assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE - || pPager->journalMode==PAGER_JOURNALMODE_MEMORY - || pPager->journalMode==PAGER_JOURNALMODE_WAL + assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE + || pPager->journalMode==PAGER_JOURNALMODE_MEMORY + || pPager->journalMode==PAGER_JOURNALMODE_WAL ); sqlite3OsClose(pPager->jfd); if( bDelete ){ @@ -51664,8 +58342,8 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ } if( pagerUseWal(pPager) ){ - /* Drop the WAL write-lock, if any. Also, if the connection was in - ** locking_mode=exclusive mode but is no longer, drop the EXCLUSIVE + /* Drop the WAL write-lock, if any. Also, if the connection was in + ** locking_mode=exclusive mode but is no longer, drop the EXCLUSIVE ** lock held on the database file. */ rc2 = sqlite3WalEndWriteTransaction(pPager->pWal); @@ -51673,7 +58351,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ }else if( rc==SQLITE_OK && bCommit && pPager->dbFileSize>pPager->dbSize ){ /* This branch is taken when committing a transaction in rollback-journal ** mode if the database file on disk is larger than the database image. - ** At this point the journal has been finalized and the transaction + ** At this point the journal has been finalized and the transaction ** successfully committed, but the EXCLUSIVE lock is still held on the ** file. So it is safe to truncate the database file to its minimum ** required size. */ @@ -51686,32 +58364,31 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK; } - if( !pPager->exclusiveMode + if( !pPager->exclusiveMode && (!pagerUseWal(pPager) || sqlite3WalExclusiveMode(pPager->pWal, 0)) ){ rc2 = pagerUnlockDb(pPager, SHARED_LOCK); - pPager->changeCountDone = 0; } pPager->eState = PAGER_READER; - pPager->setMaster = 0; + pPager->setSuper = 0; return (rc==SQLITE_OK?rc2:rc); } /* -** Execute a rollback if a transaction is active and unlock the -** database file. +** Execute a rollback if a transaction is active and unlock the +** database file. ** -** If the pager has already entered the ERROR state, do not attempt +** If the pager has already entered the ERROR state, do not attempt ** the rollback at this time. Instead, pager_unlock() is called. The ** call to pager_unlock() will discard all in-memory pages, unlock -** the database file and move the pager back to OPEN state. If this -** means that there is a hot-journal left in the file-system, the next -** connection to obtain a shared lock on the pager (which may be this one) +** the database file and move the pager back to OPEN state. If this +** means that there is a hot-journal left in the file-system, the next +** connection to obtain a shared lock on the pager (which may be this one) ** will roll it back. ** ** If the pager has not already entered the ERROR state, but an IO or -** malloc error occurs during a rollback, then this will itself cause +** malloc error occurs during a rollback, then this will itself cause ** the pager to enter the ERROR state. Which will be cleared by the ** call to pager_unlock(), as described above. */ @@ -51732,10 +58409,10 @@ static void pagerUnlockAndRollback(Pager *pPager){ /* ** Parameter aData must point to a buffer of pPager->pageSize bytes -** of data. Compute and return a checksum based ont the contents of the +** of data. Compute and return a checksum based on the contents of the ** page of data and the current value of pPager->cksumInit. ** -** This is not a real checksum. It is really just the sum of the +** This is not a real checksum. It is really just the sum of the ** random initial value (pPager->cksumInit) and every 200th byte ** of the page data, starting with byte offset (pPager->pageSize%200). ** Each byte is interpreted as an 8-bit unsigned integer. @@ -51743,8 +58420,8 @@ static void pagerUnlockAndRollback(Pager *pPager){ ** Changing the formula used to compute this checksum results in an ** incompatible journal file format. ** -** If journal corruption occurs due to a power failure, the most likely -** scenario is that one end or the other of the record will be changed. +** If journal corruption occurs due to a power failure, the most likely +** scenario is that one end or the other of the record will be changed. ** It is much less likely that the two ends of the journal record will be ** correct and the middle be corrupt. Thus, this "checksum" scheme, ** though fast and simple, catches the mostly likely kind of corruption. @@ -51759,42 +58436,13 @@ static u32 pager_cksum(Pager *pPager, const u8 *aData){ return cksum; } -/* -** Report the current page size and number of reserved bytes back -** to the codec. -*/ -#ifdef SQLITE_HAS_CODEC -static void pagerReportSize(Pager *pPager){ - if( pPager->xCodecSizeChng ){ - pPager->xCodecSizeChng(pPager->pCodec, pPager->pageSize, - (int)pPager->nReserve); - } -} -#else -# define pagerReportSize(X) /* No-op if we do not support a codec */ -#endif - -#ifdef SQLITE_HAS_CODEC -/* -** Make sure the number of reserved bits is the same in the destination -** pager as it is in the source. This comes up when a VACUUM changes the -** number of reserved bits to the "optimal" amount. -*/ -SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){ - if( pDest->nReserve!=pSrc->nReserve ){ - pDest->nReserve = pSrc->nReserve; - pagerReportSize(pDest); - } -} -#endif - /* ** Read a single page from either the journal file (if isMainJrnl==1) or ** from the sub-journal (if isMainJrnl==0) and playback that page. ** The page begins at offset *pOffset into the file. The *pOffset ** value is increased to the start of the next page in the journal. ** -** The main rollback journal uses checksums - the statement journal does +** The main rollback journal uses checksums - the statement journal does ** not. ** ** If the page number of the page record read from the (sub-)journal file @@ -51814,8 +58462,8 @@ SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){ ** is successfully read from the (sub-)journal file but appears to be ** corrupted, SQLITE_DONE is returned. Data is considered corrupted in ** two circumstances: -** -** * If the record page-number is illegal (0 or PAGER_MJ_PGNO), or +** +** * If the record page-number is illegal (0 or PAGER_SJ_PGNO), or ** * If the record is being rolled back from the main journal file ** and the checksum field does not match the record content. ** @@ -51839,11 +58487,6 @@ static int pager_playback_one_page( char *aData; /* Temporary storage for the page */ sqlite3_file *jfd; /* The file descriptor for the journal file */ int isSynced; /* True if journal page is synced */ -#ifdef SQLITE_HAS_CODEC - /* The jrnlEnc flag is true if Journal pages should be passed through - ** the codec. It is false for pure in-memory journals. */ - const int jrnlEnc = (isMainJrnl || pPager->subjInMemory==0); -#endif assert( (isMainJrnl&~1)==0 ); /* isMainJrnl is 0 or 1 */ assert( (isSavepnt&~1)==0 ); /* isSavepnt is 0 or 1 */ @@ -51854,7 +58497,7 @@ static int pager_playback_one_page( assert( aData ); /* Temp storage must have already been allocated */ assert( pagerUseWal(pPager)==0 || (!isMainJrnl && isSavepnt) ); - /* Either the state is greater than PAGER_WRITER_CACHEMOD (a transaction + /* Either the state is greater than PAGER_WRITER_CACHEMOD (a transaction ** or savepoint rollback done at the request of the caller) or this is ** a hot-journal rollback. If it is a hot-journal rollback, the pager ** is in state OPEN and holds an EXCLUSIVE lock. Hot-journal rollback @@ -51880,7 +58523,7 @@ static int pager_playback_one_page( ** it could cause invalid data to be written into the journal. We need to ** detect this invalid data (with high probability) and ignore it. */ - if( pgno==0 || pgno==PAGER_MJ_PGNO(pPager) ){ + if( pgno==0 || pgno==PAGER_SJ_PGNO(pPager) ){ assert( !isSavepnt ); return SQLITE_DONE; } @@ -51906,7 +58549,6 @@ static int pager_playback_one_page( */ if( pgno==1 && pPager->nReserve!=((u8*)aData)[20] ){ pPager->nReserve = ((u8*)aData)[20]; - pagerReportSize(pPager); } /* If the pager is in CACHEMOD state, then there must be a copy of this @@ -51921,7 +58563,7 @@ static int pager_playback_one_page( ** assert()able. ** ** If in WRITER_DBMOD, WRITER_FINISHED or OPEN state, then we update the - ** pager cache if it exists and the main file. The page is then marked + ** pager cache if it exists and the main file. The page is then marked ** not dirty. Since this code is only executed in PAGER_OPEN state for ** a hot-journal rollback, it is guaranteed that the page-cache is empty ** if the pager is in OPEN state. @@ -51974,43 +58616,29 @@ static int pager_playback_one_page( ** is if the data was just read from an in-memory sub-journal. In that ** case it must be encrypted here before it is copied into the database ** file. */ -#ifdef SQLITE_HAS_CODEC - if( !jrnlEnc ){ - CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT, aData); - rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst); - CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT); - }else -#endif rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst); if( pgno>pPager->dbFileSize ){ pPager->dbFileSize = pgno; } if( pPager->pBackup ){ -#ifdef SQLITE_HAS_CODEC - if( jrnlEnc ){ - CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT); - sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData); - CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT,aData); - }else -#endif sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData); } }else if( !isMainJrnl && pPg==0 ){ /* If this is a rollback of a savepoint and data was not written to ** the database and the page is not in-memory, there is a potential - ** problem. When the page is next fetched by the b-tree layer, it - ** will be read from the database file, which may or may not be - ** current. + ** problem. When the page is next fetched by the b-tree layer, it + ** will be read from the database file, which may or may not be + ** current. ** ** There are a couple of different ways this can happen. All are quite - ** obscure. When running in synchronous mode, this can only happen + ** obscure. When running in synchronous mode, this can only happen ** if the page is on the free-list at the start of the transaction, then ** populated, then moved using sqlite3PagerMovepage(). ** ** The solution is to add an in-memory page to the cache containing - ** the data just read from the sub-journal. Mark the page as dirty - ** and if the pager requires a journal-sync, then mark the page as + ** the data just read from the sub-journal. Mark the page as dirty + ** and if the pager requires a journal-sync, then mark the page as ** requiring a journal-sync before it is written. */ assert( isSavepnt ); @@ -52044,164 +58672,167 @@ static int pager_playback_one_page( if( pgno==1 ){ memcpy(&pPager->dbFileVers, &((u8*)pData)[24],sizeof(pPager->dbFileVers)); } - - /* Decode the page just read from disk */ -#if SQLITE_HAS_CODEC - if( jrnlEnc ){ CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM_BKPT); } -#endif sqlite3PcacheRelease(pPg); } return rc; } /* -** Parameter zMaster is the name of a master journal file. A single journal -** file that referred to the master journal file has just been rolled back. -** This routine checks if it is possible to delete the master journal file, +** Parameter zSuper is the name of a super-journal file. A single journal +** file that referred to the super-journal file has just been rolled back. +** This routine checks if it is possible to delete the super-journal file, ** and does so if it is. ** -** Argument zMaster may point to Pager.pTmpSpace. So that buffer is not +** Argument zSuper may point to Pager.pTmpSpace. So that buffer is not ** available for use within this function. ** -** When a master journal file is created, it is populated with the names -** of all of its child journals, one after another, formatted as utf-8 -** encoded text. The end of each child journal file is marked with a -** nul-terminator byte (0x00). i.e. the entire contents of a master journal +** When a super-journal file is created, it is populated with the names +** of all of its child journals, one after another, formatted as utf-8 +** encoded text. The end of each child journal file is marked with a +** nul-terminator byte (0x00). i.e. the entire contents of a super-journal ** file for a transaction involving two databases might be: ** ** "/home/bill/a.db-journal\x00/home/bill/b.db-journal\x00" ** -** A master journal file may only be deleted once all of its child +** A super-journal file may only be deleted once all of its child ** journals have been rolled back. ** -** This function reads the contents of the master-journal file into +** This function reads the contents of the super-journal file into ** memory and loops through each of the child journal names. For ** each child journal, it checks if: ** ** * if the child journal exists, and if so -** * if the child journal contains a reference to master journal -** file zMaster +** * if the child journal contains a reference to super-journal +** file zSuper ** ** If a child journal can be found that matches both of the criteria ** above, this function returns without doing anything. Otherwise, if -** no such child journal can be found, file zMaster is deleted from +** no such child journal can be found, file zSuper is deleted from ** the file-system using sqlite3OsDelete(). ** ** If an IO error within this function, an error code is returned. This ** function allocates memory by calling sqlite3Malloc(). If an allocation -** fails, SQLITE_NOMEM is returned. Otherwise, if no IO or malloc errors +** fails, SQLITE_NOMEM is returned. Otherwise, if no IO or malloc errors ** occur, SQLITE_OK is returned. ** ** TODO: This function allocates a single block of memory to load -** the entire contents of the master journal file. This could be -** a couple of kilobytes or so - potentially larger than the page +** the entire contents of the super-journal file. This could be +** a couple of kilobytes or so - potentially larger than the page ** size. */ -static int pager_delmaster(Pager *pPager, const char *zMaster){ +static int pager_delsuper(Pager *pPager, const char *zSuper){ sqlite3_vfs *pVfs = pPager->pVfs; int rc; /* Return code */ - sqlite3_file *pMaster; /* Malloc'd master-journal file descriptor */ + sqlite3_file *pSuper; /* Malloc'd super-journal file descriptor */ sqlite3_file *pJournal; /* Malloc'd child-journal file descriptor */ - char *zMasterJournal = 0; /* Contents of master journal file */ - i64 nMasterJournal; /* Size of master journal file */ + char *zSuperJournal = 0; /* Contents of super-journal file */ + i64 nSuperJournal; /* Size of super-journal file */ char *zJournal; /* Pointer to one journal within MJ file */ - char *zMasterPtr; /* Space to hold MJ filename from a journal file */ - int nMasterPtr; /* Amount of space allocated to zMasterPtr[] */ + char *zSuperPtr; /* Space to hold super-journal filename */ + char *zFree = 0; /* Free this buffer */ + int nSuperPtr; /* Amount of space allocated to zSuperPtr[] */ - /* Allocate space for both the pJournal and pMaster file descriptors. - ** If successful, open the master journal file for reading. + /* Allocate space for both the pJournal and pSuper file descriptors. + ** If successful, open the super-journal file for reading. */ - pMaster = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2); - pJournal = (sqlite3_file *)(((u8 *)pMaster) + pVfs->szOsFile); - if( !pMaster ){ + pSuper = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2); + if( !pSuper ){ rc = SQLITE_NOMEM_BKPT; + pJournal = 0; }else{ - const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MASTER_JOURNAL); - rc = sqlite3OsOpen(pVfs, zMaster, pMaster, flags, 0); + const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_SUPER_JOURNAL); + rc = sqlite3OsOpen(pVfs, zSuper, pSuper, flags, 0); + pJournal = (sqlite3_file *)(((u8 *)pSuper) + pVfs->szOsFile); } - if( rc!=SQLITE_OK ) goto delmaster_out; + if( rc!=SQLITE_OK ) goto delsuper_out; - /* Load the entire master journal file into space obtained from - ** sqlite3_malloc() and pointed to by zMasterJournal. Also obtain - ** sufficient space (in zMasterPtr) to hold the names of master - ** journal files extracted from regular rollback-journals. + /* Load the entire super-journal file into space obtained from + ** sqlite3_malloc() and pointed to by zSuperJournal. Also obtain + ** sufficient space (in zSuperPtr) to hold the names of super-journal + ** files extracted from regular rollback-journals. */ - rc = sqlite3OsFileSize(pMaster, &nMasterJournal); - if( rc!=SQLITE_OK ) goto delmaster_out; - nMasterPtr = pVfs->mxPathname+1; - zMasterJournal = sqlite3Malloc(nMasterJournal + nMasterPtr + 1); - if( !zMasterJournal ){ + rc = sqlite3OsFileSize(pSuper, &nSuperJournal); + if( rc!=SQLITE_OK ) goto delsuper_out; + nSuperPtr = pVfs->mxPathname+1; + zFree = sqlite3Malloc(4 + nSuperJournal + nSuperPtr + 2); + if( !zFree ){ rc = SQLITE_NOMEM_BKPT; - goto delmaster_out; + goto delsuper_out; } - zMasterPtr = &zMasterJournal[nMasterJournal+1]; - rc = sqlite3OsRead(pMaster, zMasterJournal, (int)nMasterJournal, 0); - if( rc!=SQLITE_OK ) goto delmaster_out; - zMasterJournal[nMasterJournal] = 0; + zFree[0] = zFree[1] = zFree[2] = zFree[3] = 0; + zSuperJournal = &zFree[4]; + zSuperPtr = &zSuperJournal[nSuperJournal+2]; + rc = sqlite3OsRead(pSuper, zSuperJournal, (int)nSuperJournal, 0); + if( rc!=SQLITE_OK ) goto delsuper_out; + zSuperJournal[nSuperJournal] = 0; + zSuperJournal[nSuperJournal+1] = 0; - zJournal = zMasterJournal; - while( (zJournal-zMasterJournal)pageSize bytes). +** DBMOD or OPEN state, this function is a no-op. Otherwise, the size +** of the file is changed to nPage pages (nPage*pPager->pageSize bytes). ** If the file on disk is currently larger than nPage pages, then use the VFS ** xTruncate() method to truncate it. ** -** Or, it might be the case that the file on disk is smaller than -** nPage pages. Some operating system implementations can get confused if -** you try to truncate a file to some size that is larger than it -** currently is, so detect this case and write a single zero byte to +** Or, it might be the case that the file on disk is smaller than +** nPage pages. Some operating system implementations can get confused if +** you try to truncate a file to some size that is larger than it +** currently is, so detect this case and write a single zero byte to ** the end of the new file instead. ** ** If successful, return SQLITE_OK. If an IO error occurs while modifying @@ -52211,9 +58842,11 @@ static int pager_truncate(Pager *pPager, Pgno nPage){ int rc = SQLITE_OK; assert( pPager->eState!=PAGER_ERROR ); assert( pPager->eState!=PAGER_READER ); - - if( isOpen(pPager->fd) - && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN) + PAGERTRACE(("Truncate %d npage %u\n", PAGERID(pPager), nPage)); + + + if( isOpen(pPager->fd) + && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN) ){ i64 currentSize, newSize; int szPage = pPager->pageSize; @@ -52229,6 +58862,7 @@ static int pager_truncate(Pager *pPager, Pgno nPage){ memset(pTmp, 0, szPage); testcase( (newSize-szPage) == currentSize ); testcase( (newSize-szPage) > currentSize ); + sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &newSize); rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage); } if( rc==SQLITE_OK ){ @@ -52257,9 +58891,9 @@ SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *pFile){ /* ** Set the value of the Pager.sectorSize variable for the given ** pager based on the value returned by the xSectorSize method -** of the open database file. The sector size will be used -** to determine the size and alignment of journal header and -** master journal pointers within created journal files. +** of the open database file. The sector size will be used +** to determine the size and alignment of journal header and +** super-journal pointers within created journal files. ** ** For temporary files the effective sector size is always 512 bytes. ** @@ -52281,7 +58915,7 @@ static void setSectorSize(Pager *pPager){ assert( isOpen(pPager->fd) || pPager->tempFile ); if( pPager->tempFile - || (sqlite3OsDeviceCharacteristics(pPager->fd) & + || (sqlite3OsDeviceCharacteristics(pPager->fd) & SQLITE_IOCAP_POWERSAFE_OVERWRITE)!=0 ){ /* Sector size doesn't matter for temporary files. Also, the file @@ -52295,15 +58929,15 @@ static void setSectorSize(Pager *pPager){ /* ** Playback the journal and thus restore the database file to -** the state it was in before we started making changes. +** the state it was in before we started making changes. ** -** The journal file format is as follows: +** The journal file format is as follows: ** ** (1) 8 byte prefix. A copy of aJournalMagic[]. ** (2) 4 byte big-endian integer which is the number of valid page records ** in the journal. If this value is 0xffffffff, then compute the ** number of page records from the journal size. -** (3) 4 byte big-endian integer which is the initial value for the +** (3) 4 byte big-endian integer which is the initial value for the ** sanity checksum. ** (4) 4 byte integer which is the number of pages to truncate the ** database to during a rollback. @@ -52332,7 +58966,7 @@ static void setSectorSize(Pager *pPager){ ** from the file size. This value is used when the user selects the ** no-sync option for the journal. A power failure could lead to corruption ** in this case. But for things like temporary table (which will be -** deleted when the power is restored) we don't care. +** deleted when the power is restored) we don't care. ** ** If the file opened as the journal file is not a well-formed ** journal file then all pages up to the first corrupted page are rolled @@ -52344,7 +58978,7 @@ static void setSectorSize(Pager *pPager){ ** and an error code is returned. ** ** The isHot parameter indicates that we are trying to rollback a journal -** that might be a hot journal. Or, it could be that the journal is +** that might be a hot journal. Or, it could be that the journal is ** preserved because of JOURNALMODE_PERSIST or JOURNALMODE_TRUNCATE. ** If the journal really is hot, reset the pager cache prior rolling ** back any content. If the journal is merely persistent, no reset is @@ -52358,7 +58992,7 @@ static int pager_playback(Pager *pPager, int isHot){ Pgno mxPg = 0; /* Size of the original file in pages */ int rc; /* Result code of a subroutine */ int res = 1; /* Value returned by sqlite3OsAccess() */ - char *zMaster = 0; /* Name of master journal file if any */ + char *zSuper = 0; /* Name of super-journal file if any */ int needPagerReset; /* True to reset page prior to first page rollback */ int nPlayback = 0; /* Total number of pages restored from journal */ u32 savedPageSize = pPager->pageSize; @@ -52372,8 +59006,8 @@ static int pager_playback(Pager *pPager, int isHot){ goto end_playback; } - /* Read the master journal name from the journal, if it is present. - ** If a master journal file name is specified, but the file is not + /* Read the super-journal name from the journal, if it is present. + ** If a super-journal file name is specified, but the file is not ** present on disk, then the journal is not hot and does not need to be ** played back. ** @@ -52383,21 +59017,21 @@ static int pager_playback(Pager *pPager, int isHot){ ** mxPathname is 512, which is the same as the minimum allowable value ** for pageSize. */ - zMaster = pPager->pTmpSpace; - rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1); - if( rc==SQLITE_OK && zMaster[0] ){ - rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res); + zSuper = pPager->pTmpSpace; + rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1); + if( rc==SQLITE_OK && zSuper[0] ){ + rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res); } - zMaster = 0; + zSuper = 0; if( rc!=SQLITE_OK || !res ){ goto end_playback; } pPager->journalOff = 0; needPagerReset = isHot; - /* This loop terminates either when a readJournalHdr() or - ** pager_playback_one_page() call returns SQLITE_DONE or an IO error - ** occurs. + /* This loop terminates either when a readJournalHdr() or + ** pager_playback_one_page() call returns SQLITE_DONE or an IO error + ** occurs. */ while( 1 ){ /* Read the next journal header from the journal file. If there are @@ -52406,7 +59040,7 @@ static int pager_playback(Pager *pPager, int isHot){ ** This indicates nothing more needs to be rolled back. */ rc = readJournalHdr(pPager, isHot, szJ, &nRec, &mxPg); - if( rc!=SQLITE_OK ){ + if( rc!=SQLITE_OK ){ if( rc==SQLITE_DONE ){ rc = SQLITE_OK; } @@ -52434,7 +59068,7 @@ static int pager_playback(Pager *pPager, int isHot){ ** chunk of the journal contains zero pages to be rolled back. But ** when doing a ROLLBACK and the nRec==0 chunk is the last chunk in ** the journal, it means that the journal might contain additional - ** pages that need to be rolled back and that the number of pages + ** pages that need to be rolled back and that the number of pages ** should be computed based on the journal file size. */ if( nRec==0 && !isHot && @@ -52451,9 +59085,12 @@ static int pager_playback(Pager *pPager, int isHot){ goto end_playback; } pPager->dbSize = mxPg; + if( pPager->mxPgnomxPgno = mxPg; + } } - /* Copy original pages out of the journal and back into the + /* Copy original pages out of the journal and back into the ** database file and/or page cache. */ for(u=0; ufd,SQLITE_FCNTL_DB_UNCHANGED,0); #endif - /* If this playback is happening automatically as a result of an IO or - ** malloc error that occurred after the change-counter was updated but - ** before the transaction was committed, then the change-counter - ** modification may just have been reverted. If this happens in exclusive + /* If this playback is happening automatically as a result of an IO or + ** malloc error that occurred after the change-counter was updated but + ** before the transaction was committed, then the change-counter + ** modification may just have been reverted. If this happens in exclusive ** mode, then subsequent transactions performed by the connection will not ** update the change-counter at all. This may lead to cache inconsistency ** problems for other processes at some point in the future. So, just @@ -52515,8 +59152,12 @@ end_playback: pPager->changeCountDone = pPager->tempFile; if( rc==SQLITE_OK ){ - zMaster = pPager->pTmpSpace; - rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1); + /* Leave 4 bytes of space before the super-journal filename in memory. + ** This is because it may end up being passed to sqlite3OsOpen(), in + ** which case it requires 4 0x00 bytes in memory immediately before + ** the filename. */ + zSuper = &pPager->pTmpSpace[4]; + rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1); testcase( rc!=SQLITE_OK ); } if( rc==SQLITE_OK @@ -52525,14 +59166,16 @@ end_playback: rc = sqlite3PagerSync(pPager, 0); } if( rc==SQLITE_OK ){ - rc = pager_end_transaction(pPager, zMaster[0]!='\0', 0); + rc = pager_end_transaction(pPager, zSuper[0]!='\0', 0); testcase( rc!=SQLITE_OK ); } - if( rc==SQLITE_OK && zMaster[0] && res ){ - /* If there was a master journal and this routine will return success, - ** see if it is possible to delete the master journal. + if( rc==SQLITE_OK && zSuper[0] && res ){ + /* If there was a super-journal and this routine will return success, + ** see if it is possible to delete the super-journal. */ - rc = pager_delmaster(pPager, zMaster); + assert( zSuper==&pPager->pTmpSpace[4] ); + memset(pPager->pTmpSpace, 0, 4); + rc = pager_delsuper(pPager, zSuper); testcase( rc!=SQLITE_OK ); } if( isHot && nPlayback ){ @@ -52551,7 +59194,7 @@ end_playback: /* ** Read the content for page pPg out of the database file (or out of -** the WAL if that is where the most recent copy if found) into +** the WAL if that is where the most recent copy if found) into ** pPg->pData. A shared lock or greater must be held on the database ** file before this function is called. ** @@ -52607,8 +59250,6 @@ static int readDbPage(PgHdr *pPg){ memcpy(&pPager->dbFileVers, dbFileVers, sizeof(pPager->dbFileVers)); } } - CODEC1(pPager, pPg->pData, pPg->pgno, 3, rc = SQLITE_NOMEM_BKPT); - PAGER_INCR(sqlite3_pager_readdb_count); PAGER_INCR(pPager->nRead); IOTRACE(("PGIN %p %d\n", pPager, pPg->pgno)); @@ -52628,6 +59269,7 @@ static int readDbPage(PgHdr *pPg){ */ static void pager_write_changecounter(PgHdr *pPg){ u32 change_counter; + if( NEVER(pPg==0) ) return; /* Increment the value just read and write it back to byte 24. */ change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1; @@ -52642,15 +59284,15 @@ static void pager_write_changecounter(PgHdr *pPg){ #ifndef SQLITE_OMIT_WAL /* -** This function is invoked once for each page that has already been +** This function is invoked once for each page that has already been ** written into the log file when a WAL transaction is rolled back. -** Parameter iPg is the page number of said page. The pCtx argument +** Parameter iPg is the page number of said page. The pCtx argument ** is actually a pointer to the Pager structure. ** ** If page iPg is present in the cache, and has no outstanding references, ** it is discarded. Otherwise, if there are one or more outstanding ** references, the page content is reloaded from the database. If the -** attempt to reload content from the database is required and fails, +** attempt to reload content from the database is required and fails, ** return an SQLite error code. Otherwise, SQLITE_OK. */ static int pagerUndoCallback(void *pCtx, Pgno iPg){ @@ -52676,7 +59318,7 @@ static int pagerUndoCallback(void *pCtx, Pgno iPg){ ** updated as data is copied out of the rollback journal and into the ** database. This is not generally possible with a WAL database, as ** rollback involves simply truncating the log file. Therefore, if one - ** or more frames have already been written to the log (and therefore + ** or more frames have already been written to the log (and therefore ** also copied into the backup databases) as part of this transaction, ** the backups must be restarted. */ @@ -52693,7 +59335,7 @@ static int pagerRollbackWal(Pager *pPager){ PgHdr *pList; /* List of dirty pages to revert */ /* For all pages in the cache that are currently dirty or have already - ** been written (but not committed) to the log file, do one of the + ** been written (but not committed) to the log file, do one of the ** following: ** ** + Discard the cached page (if refcount==0), or @@ -52715,11 +59357,11 @@ static int pagerRollbackWal(Pager *pPager){ ** This function is a wrapper around sqlite3WalFrames(). As well as logging ** the contents of the list of pages headed by pList (connected by pDirty), ** this function notifies any active backup processes that the pages have -** changed. +** changed. ** ** The list of pages passed into this routine is always sorted by page number. ** Hence, if page 1 appears anywhere on the list, it will be the first page. -*/ +*/ static int pagerWalFrames( Pager *pPager, /* Pager object */ PgHdr *pList, /* List of frames to log */ @@ -52733,7 +59375,7 @@ static int pagerWalFrames( assert( pPager->pWal ); assert( pList ); #ifdef SQLITE_DEBUG - /* Verify that the page list is in accending order */ + /* Verify that the page list is in ascending order */ for(p=pList; p && p->pDirty; p=p->pDirty){ assert( p->pgno < p->pDirty->pgno ); } @@ -52760,7 +59402,7 @@ static int pagerWalFrames( pPager->aStat[PAGER_STAT_WRITE] += nList; if( pList->pgno==1 ) pager_write_changecounter(pList); - rc = sqlite3WalFrames(pPager->pWal, + rc = sqlite3WalFrames(pPager->pWal, pPager->pageSize, pList, nTruncate, isCommit, pPager->walSyncFlags ); if( rc==SQLITE_OK && pPager->pBackup ){ @@ -52864,7 +59506,7 @@ static int pagerPagecount(Pager *pPager, Pgno *pnPage){ #ifndef SQLITE_OMIT_WAL /* ** Check if the *-wal file that corresponds to the database opened by pPager -** exists if the database is not empy, or verify that the *-wal file does +** exists if the database is not empty, or verify that the *-wal file does ** not exist (by deleting it) if the database file is empty. ** ** If the database is not empty and the *-wal file exists, open the pager @@ -52875,9 +59517,9 @@ static int pagerPagecount(Pager *pPager, Pgno *pnPage){ ** Return SQLITE_OK or an error code. ** ** The caller must hold a SHARED lock on the database file to call this -** function. Because an EXCLUSIVE lock on the db file is required to delete -** a WAL on a none-empty database, this ensures there is no race condition -** between the xAccess() below and an xDelete() being executed by some +** function. Because an EXCLUSIVE lock on the db file is required to delete +** a WAL on a none-empty database, this ensures there is no race condition +** between the xAccess() below and an xDelete() being executed by some ** other connection. */ static int pagerOpenWalIfPresent(Pager *pPager){ @@ -52913,21 +59555,21 @@ static int pagerOpenWalIfPresent(Pager *pPager){ /* ** Playback savepoint pSavepoint. Or, if pSavepoint==NULL, then playback -** the entire master journal file. The case pSavepoint==NULL occurs when -** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction +** the entire super-journal file. The case pSavepoint==NULL occurs when +** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction ** savepoint. ** -** When pSavepoint is not NULL (meaning a non-transaction savepoint is +** When pSavepoint is not NULL (meaning a non-transaction savepoint is ** being rolled back), then the rollback consists of up to three stages, ** performed in the order specified: ** ** * Pages are played back from the main journal starting at byte -** offset PagerSavepoint.iOffset and continuing to +** offset PagerSavepoint.iOffset and continuing to ** PagerSavepoint.iHdrOffset, or to the end of the main journal ** file if PagerSavepoint.iHdrOffset is zero. ** ** * If PagerSavepoint.iHdrOffset is not zero, then pages are played -** back starting from the journal header immediately following +** back starting from the journal header immediately following ** PagerSavepoint.iHdrOffset to the end of the main journal file. ** ** * Pages are then played back from the sub-journal file, starting @@ -52943,7 +59585,7 @@ static int pagerOpenWalIfPresent(Pager *pPager){ ** journal file. There is no need for a bitvec in this case. ** ** In either case, before playback commences the Pager.dbSize variable -** is reset to the value that it held at the start of the savepoint +** is reset to the value that it held at the start of the savepoint ** (or transaction). No page with a page-number greater than this value ** is played back. If one is encountered it is simply skipped. */ @@ -52964,7 +59606,7 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){ } } - /* Set the database size back to the value it was before the savepoint + /* Set the database size back to the value it was before the savepoint ** being reverted was opened. */ pPager->dbSize = pSavepoint ? pSavepoint->nOrig : pPager->dbOrigSize; @@ -53017,7 +59659,7 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){ ** test is related to ticket #2565. See the discussion in the ** pager_playback() function for additional information. */ - if( nJRec==0 + if( nJRec==0 && pPager->journalHdr+JOURNAL_HDR_SZ(pPager)==pPager->journalOff ){ nJRec = (u32)((szJ - pPager->journalOff)/JOURNAL_PG_SZ(pPager)); @@ -53153,7 +59795,6 @@ SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){ ** Numeric values associated with these states are OFF==1, NORMAL=2, ** and FULL=3. */ -#ifndef SQLITE_OMIT_PAGER_PRAGMAS SQLITE_PRIVATE void sqlite3PagerSetFlags( Pager *pPager, /* The pager to set safety level for */ unsigned pgFlags /* Various flags */ @@ -53188,12 +59829,11 @@ SQLITE_PRIVATE void sqlite3PagerSetFlags( pPager->doNotSpill |= SPILLFLAG_OFF; } } -#endif /* ** The following global variable is incremented whenever the library ** attempts to open a temporary file. This information is used for -** testing and analysis only. +** testing and analysis only. */ #ifdef SQLITE_TEST SQLITE_API int sqlite3_opentemp_count = 0; @@ -53202,8 +59842,8 @@ SQLITE_API int sqlite3_opentemp_count = 0; /* ** Open a temporary file. ** -** Write the file descriptor into *pFile. Return SQLITE_OK on success -** or some other error code if we fail. The OS will automatically +** Write the file descriptor into *pFile. Return SQLITE_OK on success +** or some other error code if we fail. The OS will automatically ** delete the temporary file when it is closed. ** ** The flags passed to the VFS layer xOpen() call are those specified @@ -53235,9 +59875,9 @@ static int pagerOpentemp( /* ** Set the busy handler function. ** -** The pager invokes the busy-handler if sqlite3OsLock() returns +** The pager invokes the busy-handler if sqlite3OsLock() returns ** SQLITE_BUSY when trying to upgrade from no-lock to a SHARED lock, -** or when trying to upgrade from a RESERVED lock to an EXCLUSIVE +** or when trying to upgrade from a RESERVED lock to an EXCLUSIVE ** lock. It does *not* invoke the busy handler when upgrading from ** SHARED to RESERVED, or when upgrading from SHARED to EXCLUSIVE ** (which occurs during hot-journal rollback). Summary: @@ -53249,7 +59889,7 @@ static int pagerOpentemp( ** SHARED_LOCK -> EXCLUSIVE_LOCK | No ** RESERVED_LOCK -> EXCLUSIVE_LOCK | Yes ** -** If the busy-handler callback returns non-zero, the lock is +** If the busy-handler callback returns non-zero, the lock is ** retried. If it returns zero, then the SQLITE_BUSY error is ** returned to the caller of the pager API function. */ @@ -53268,16 +59908,16 @@ SQLITE_PRIVATE void sqlite3PagerSetBusyHandler( } /* -** Change the page size used by the Pager object. The new page size +** Change the page size used by the Pager object. The new page size ** is passed in *pPageSize. ** ** If the pager is in the error state when this function is called, it -** is a no-op. The value returned is the error state error code (i.e. +** is a no-op. The value returned is the error state error code (i.e. ** one of SQLITE_IOERR, an SQLITE_IOERR_xxx sub-code or SQLITE_FULL). ** ** Otherwise, if all of the following are true: ** -** * the new page size (value of *pPageSize) is valid (a power +** * the new page size (value of *pPageSize) is valid (a power ** of two between 512 and SQLITE_MAX_PAGE_SIZE, inclusive), and ** ** * there are no outstanding page references, and @@ -53287,14 +59927,14 @@ SQLITE_PRIVATE void sqlite3PagerSetBusyHandler( ** ** then the pager object page size is set to *pPageSize. ** -** If the page size is changed, then this function uses sqlite3PagerMalloc() -** to obtain a new Pager.pTmpSpace buffer. If this allocation attempt -** fails, SQLITE_NOMEM is returned and the page size remains unchanged. +** If the page size is changed, then this function uses sqlite3PagerMalloc() +** to obtain a new Pager.pTmpSpace buffer. If this allocation attempt +** fails, SQLITE_NOMEM is returned and the page size remains unchanged. ** In all other cases, SQLITE_OK is returned. ** ** If the page size is not changed, either because one of the enumerated ** conditions above is not true, the pager was in error state when this -** function was called, or because the memory allocation attempt failed, +** function was called, or because the memory allocation attempt failed, ** then *pPageSize is set to the old, retained page size before returning. */ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nReserve){ @@ -53304,7 +59944,7 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR ** function may be called from within PagerOpen(), before the state ** of the Pager object is internally consistent. ** - ** At one point this function returned an error if the pager was in + ** At one point this function returned an error if the pager was in ** PAGER_ERROR state. But since PAGER_ERROR state guarantees that ** there is at least one outstanding page reference, this function ** is a no-op for that case anyhow. @@ -53313,8 +59953,8 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR u32 pageSize = *pPageSize; assert( pageSize==0 || (pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE) ); if( (pPager->memDb==0 || pPager->dbSize==0) - && sqlite3PcacheRefCount(pPager->pPCache)==0 - && pageSize && pageSize!=(u32)pPager->pageSize + && sqlite3PcacheRefCount(pPager->pPCache)==0 + && pageSize && pageSize!=(u32)pPager->pageSize ){ char *pNew = NULL; /* New temp space */ i64 nByte = 0; @@ -53323,8 +59963,14 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR rc = sqlite3OsFileSize(pPager->fd, &nByte); } if( rc==SQLITE_OK ){ - pNew = (char *)sqlite3PageMalloc(pageSize); - if( !pNew ) rc = SQLITE_NOMEM_BKPT; + /* 8 bytes of zeroed overrun space is sufficient so that the b-tree + * cell header parser will never run off the end of the allocation */ + pNew = (char *)sqlite3PageMalloc(pageSize+8); + if( !pNew ){ + rc = SQLITE_NOMEM_BKPT; + }else{ + memset(pNew+pageSize, 0, 8); + } } if( rc==SQLITE_OK ){ @@ -53336,6 +59982,7 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR pPager->pTmpSpace = pNew; pPager->dbSize = (Pgno)((nByte+pageSize-1)/pageSize); pPager->pageSize = pageSize; + pPager->lckPgno = (Pgno)(PENDING_BYTE/pageSize) + 1; }else{ sqlite3PageFree(pNew); } @@ -53346,7 +59993,6 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR if( nReserve<0 ) nReserve = pPager->nReserve; assert( nReserve>=0 && nReserve<1000 ); pPager->nReserve = (i16)nReserve; - pagerReportSize(pPager); pagerFixMaplimit(pPager); } return rc; @@ -53365,18 +60011,21 @@ SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager *pPager){ } /* -** Attempt to set the maximum database page count if mxPage is positive. +** Attempt to set the maximum database page count if mxPage is positive. ** Make no changes if mxPage is zero or negative. And never reduce the ** maximum page count below the current size of the database. ** ** Regardless of mxPage, return the current maximum page count. */ -SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager *pPager, int mxPage){ +SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager *pPager, Pgno mxPage){ if( mxPage>0 ){ pPager->mxPgno = mxPage; } assert( pPager->eState!=PAGER_OPEN ); /* Called only by OP_MaxPgcnt */ - assert( pPager->mxPgno>=pPager->dbSize ); /* OP_MaxPgcnt enforces this */ + /* assert( pPager->mxPgno>=pPager->dbSize ); */ + /* OP_MaxPgcnt ensures that the parameter passed to this function is not + ** less than the total number of valid pages in the database. But this + ** may be less than Pager.dbSize, and so the assert() above is not valid */ return pPager->mxPgno; } @@ -53406,11 +60055,11 @@ void enable_simulated_io_errors(void){ /* ** Read the first N bytes from the beginning of the file into memory -** that pDest points to. +** that pDest points to. ** ** If the pager was opened on a transient file (zFilename==""), or ** opened on a file less than N bytes in size, the output buffer is -** zeroed and SQLITE_OK returned. The rationale for this is that this +** zeroed and SQLITE_OK returned. The rationale for this is that this ** function is used to read database headers, and a new transient or ** zero sized database has a header than consists entirely of zeroes. ** @@ -53443,7 +60092,7 @@ SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager *pPager, int N, unsigned cha ** This function may only be called when a read-transaction is open on ** the pager. It returns the total number of pages in the database. ** -** However, if the file is between 1 and bytes in size, then +** However, if the file is between 1 and bytes in size, then ** this is considered a 1 page file. */ SQLITE_PRIVATE void sqlite3PagerPagecount(Pager *pPager, int *pnPage){ @@ -53458,19 +60107,19 @@ SQLITE_PRIVATE void sqlite3PagerPagecount(Pager *pPager, int *pnPage){ ** a similar or greater lock is already held, this function is a no-op ** (returning SQLITE_OK immediately). ** -** Otherwise, attempt to obtain the lock using sqlite3OsLock(). Invoke -** the busy callback if the lock is currently not available. Repeat -** until the busy callback returns false or until the attempt to +** Otherwise, attempt to obtain the lock using sqlite3OsLock(). Invoke +** the busy callback if the lock is currently not available. Repeat +** until the busy callback returns false or until the attempt to ** obtain the lock succeeds. ** ** Return SQLITE_OK on success and an error code if we cannot obtain -** the lock. If the lock is obtained successfully, set the Pager.state +** the lock. If the lock is obtained successfully, set the Pager.state ** variable to locktype before returning. */ static int pager_wait_on_lock(Pager *pPager, int locktype){ int rc; /* Return code */ - /* Check that this is either a no-op (because the requested lock is + /* Check that this is either a no-op (because the requested lock is ** already held), or one of the transitions that the busy-handler ** may be invoked during, according to the comment above ** sqlite3PagerSetBusyhandler(). @@ -53487,15 +60136,14 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){ } /* -** Function assertTruncateConstraint(pPager) checks that one of the +** Function assertTruncateConstraint(pPager) checks that one of the ** following is true for all dirty pages currently in the page-cache: ** -** a) The page number is less than or equal to the size of the +** a) The page number is less than or equal to the size of the ** current database image, in pages, OR ** ** b) if the page content were written at this time, it would not -** be necessary to write the current content out to the sub-journal -** (as determined by function subjRequiresPage()). +** be necessary to write the current content out to the sub-journal. ** ** If the condition asserted by this function were not true, and the ** dirty page were to be discarded from the cache via the pagerStress() @@ -53503,15 +60151,23 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){ ** the database file. If a savepoint transaction were rolled back after ** this happened, the correct behavior would be to restore the current ** content of the page. However, since this content is not present in either -** the database file or the portion of the rollback journal and +** the database file or the portion of the rollback journal and ** sub-journal rolled back the content could not be restored and the -** database image would become corrupt. It is therefore fortunate that +** database image would become corrupt. It is therefore fortunate that ** this circumstance cannot arise. */ #if defined(SQLITE_DEBUG) static void assertTruncateConstraintCb(PgHdr *pPg){ + Pager *pPager = pPg->pPager; assert( pPg->flags&PGHDR_DIRTY ); - assert( !subjRequiresPage(pPg) || pPg->pgno<=pPg->pPager->dbSize ); + if( pPg->pgno>pPager->dbSize ){ /* if (a) is false */ + Pgno pgno = pPg->pgno; + int i; + for(i=0; ipPager->nSavepoint; i++){ + PagerSavepoint *p = &pPager->aSavepoint[i]; + assert( p->nOrigpInSavepoint,pgno) ); + } + } } static void assertTruncateConstraint(Pager *pPager){ sqlite3PcacheIterateDirty(pPager->pPCache, assertTruncateConstraintCb); @@ -53521,9 +60177,9 @@ static void assertTruncateConstraint(Pager *pPager){ #endif /* -** Truncate the in-memory database file image to nPage pages. This -** function does not actually modify the database file on disk. It -** just sets the internal state of the pager object so that the +** Truncate the in-memory database file image to nPage pages. This +** function does not actually modify the database file on disk. It +** just sets the internal state of the pager object so that the ** truncation will be done when the current transaction is committed. ** ** This function is only called right before committing a transaction. @@ -53532,17 +60188,17 @@ static void assertTruncateConstraint(Pager *pPager){ ** then continue writing to the database. */ SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager *pPager, Pgno nPage){ - assert( pPager->dbSize>=nPage ); + assert( pPager->dbSize>=nPage || CORRUPT_DB ); assert( pPager->eState>=PAGER_WRITER_CACHEMOD ); pPager->dbSize = nPage; /* At one point the code here called assertTruncateConstraint() to ** ensure that all pages being truncated away by this operation are, - ** if one or more savepoints are open, present in the savepoint + ** if one or more savepoints are open, present in the savepoint ** journal so that they can be restored if the savepoint is rolled ** back. This is no longer necessary as this function is now only - ** called right before committing a transaction. So although the - ** Pager object may still have open savepoints (Pager.nSavepoint!=0), + ** called right before committing a transaction. So although the + ** Pager object may still have open savepoints (Pager.nSavepoint!=0), ** they cannot be rolled back. So the assertTruncateConstraint() call ** is no longer correct. */ } @@ -53554,12 +60210,12 @@ SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager *pPager, Pgno nPage){ ** size of the journal file so that the pager_playback() routine knows ** that the entire journal file has been synced. ** -** Syncing a hot-journal to disk before attempting to roll it back ensures +** Syncing a hot-journal to disk before attempting to roll it back ensures ** that if a power-failure occurs during the rollback, the process that ** attempts rollback following system recovery sees the same journal ** content as this process. ** -** If everything goes as planned, SQLITE_OK is returned. Otherwise, +** If everything goes as planned, SQLITE_OK is returned. Otherwise, ** an SQLite error code. */ static int pagerSyncHotJournal(Pager *pPager){ @@ -53575,7 +60231,7 @@ static int pagerSyncHotJournal(Pager *pPager){ #if SQLITE_MAX_MMAP_SIZE>0 /* -** Obtain a reference to a memory mapped page object for page number pgno. +** Obtain a reference to a memory mapped page object for page number pgno. ** The new object will use the pointer pData, obtained from xFetch(). ** If successful, set *ppPage to point to the new page reference ** and return SQLITE_OK. Otherwise, return an SQLite error code and set @@ -53591,7 +60247,7 @@ static int pagerAcquireMapPage( PgHdr **ppPage /* OUT: Acquired page object */ ){ PgHdr *p; /* Memory mapped page to return */ - + if( pPager->pMmapFreelist ){ *ppPage = p = pPager->pMmapFreelist; pPager->pMmapFreelist = p->pDirty; @@ -53625,7 +60281,7 @@ static int pagerAcquireMapPage( #endif /* -** Release a reference to page pPg. pPg must have been returned by an +** Release a reference to page pPg. pPg must have been returned by an ** earlier call to pagerAcquireMapPage(). */ static void pagerReleaseMapPage(PgHdr *pPg){ @@ -53685,7 +60341,7 @@ static int databaseIsUnmoved(Pager *pPager){ ** result in a coredump. ** ** This function always succeeds. If a transaction is active an attempt -** is made to roll it back. If an error occurs during the rollback +** is made to roll it back. If an error occurs during the rollback ** a hot journal may be left in the filesystem but no error is returned ** to the caller. */ @@ -53702,7 +60358,7 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){ { u8 *a = 0; assert( db || pPager->pWal==0 ); - if( db && 0==(db->flags & SQLITE_NoCkptOnClose) + if( db && 0==(db->flags & SQLITE_NoCkptOnClose) && SQLITE_OK==databaseIsUnmoved(pPager) ){ a = pTmp; @@ -53716,8 +60372,8 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){ pager_unlock(pPager); }else{ /* If it is open, sync the journal file before calling UnlockAndRollback. - ** If this is not done, then an unsynced portion of the open journal - ** file may be played back into the database. If a power failure occurs + ** If this is not done, then an unsynced portion of the open journal + ** file may be played back into the database. If a power failure occurs ** while this is happening, the database could become corrupt. ** ** If an error occurs while trying to sync the journal, shift the pager @@ -53739,11 +60395,6 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){ sqlite3OsClose(pPager->fd); sqlite3PageFree(pTmp); sqlite3PcacheClose(pPager->pPCache); - -#ifdef SQLITE_HAS_CODEC - if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec); -#endif - assert( !pPager->aSavepoint && !pPager->pInJournal ); assert( !isOpen(pPager->jfd) && !isOpen(pPager->sjfd) ); @@ -53773,7 +60424,7 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){ ** disk and can be restored in the event of a hot-journal rollback. ** ** If the Pager.noSync flag is set, then this function is a no-op. -** Otherwise, the actions required depend on the journal-mode and the +** Otherwise, the actions required depend on the journal-mode and the ** device characteristics of the file-system, as follows: ** ** * If the journal file is an in-memory journal file, no action need @@ -53785,7 +60436,7 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){ ** been written following it. If the pager is operating in full-sync ** mode, then the journal file is synced before this field is updated. ** -** * If the device does not support the SEQUENTIAL property, then +** * If the device does not support the SEQUENTIAL property, then ** journal file is synced. ** ** Or, in pseudo-code: @@ -53794,11 +60445,11 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){ ** if( NOT SAFE_APPEND ){ ** if( ) xSync(); ** -** } +** } ** if( NOT SEQUENTIAL ) xSync(); ** } ** -** If successful, this routine clears the PGHDR_NEED_SYNC flag of every +** If successful, this routine clears the PGHDR_NEED_SYNC flag of every ** page currently held in memory before returning SQLITE_OK. If an IO ** error is encountered, then the IO error code is returned to the caller. */ @@ -53826,10 +60477,10 @@ static int syncJournal(Pager *pPager, int newHdr){ ** mode, then the journal file may at this point actually be larger ** than Pager.journalOff bytes. If the next thing in the journal ** file happens to be a journal-header (written as part of the - ** previous connection's transaction), and a crash or power-failure - ** occurs after nRec is updated but before this connection writes - ** anything else to the journal file (or commits/rolls back its - ** transaction), then SQLite may become confused when doing the + ** previous connection's transaction), and a crash or power-failure + ** occurs after nRec is updated but before this connection writes + ** anything else to the journal file (or commits/rolls back its + ** transaction), then SQLite may become confused when doing the ** hot-journal rollback following recovery. It may roll back all ** of this connections data, then proceed to rolling back the old, ** out-of-date data that follows it. Database corruption. @@ -53839,7 +60490,7 @@ static int syncJournal(Pager *pPager, int newHdr){ ** byte to the start of it to prevent it from being recognized. ** ** Variable iNextHdrOffset is set to the offset at which this - ** problematic header will occur, if it exists. aMagic is used + ** problematic header will occur, if it exists. aMagic is used ** as a temporary buffer to inspect the first couple of bytes of ** the potential journal header. */ @@ -53866,7 +60517,7 @@ static int syncJournal(Pager *pPager, int newHdr){ ** it as a candidate for rollback. ** ** This is not required if the persistent media supports the - ** SAFE_APPEND property. Because in this case it is not possible + ** SAFE_APPEND property. Because in this case it is not possible ** for garbage data to be appended to the file, the nRec field ** is populated with 0xFFFFFFFF when the journal header is written ** and never needs to be updated. @@ -53886,7 +60537,7 @@ static int syncJournal(Pager *pPager, int newHdr){ if( 0==(iDc&SQLITE_IOCAP_SEQUENTIAL) ){ PAGERTRACE(("SYNC journal of %d\n", PAGERID(pPager))); IOTRACE(("JSYNC %p\n", pPager)) - rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags| + rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags| (pPager->syncFlags==SQLITE_SYNC_FULL?SQLITE_SYNC_DATAONLY:0) ); if( rc!=SQLITE_OK ) return rc; @@ -53903,8 +60554,8 @@ static int syncJournal(Pager *pPager, int newHdr){ } } - /* Unless the pager is in noSync mode, the journal file was just - ** successfully synced. Either way, clear the PGHDR_NEED_SYNC flag on + /* Unless the pager is in noSync mode, the journal file was just + ** successfully synced. Either way, clear the PGHDR_NEED_SYNC flag on ** all pages. */ sqlite3PcacheClearSyncFlags(pPager->pPCache); @@ -53924,9 +60575,9 @@ static int syncJournal(Pager *pPager, int newHdr){ ** is called. Before writing anything to the database file, this lock ** is upgraded to an EXCLUSIVE lock. If the lock cannot be obtained, ** SQLITE_BUSY is returned and no data is written to the database file. -** +** ** If the pager is a temp-file pager and the actual file-system file -** is not yet open, it is created and opened before any data is +** is not yet open, it is created and opened before any data is ** written out. ** ** Once the lock has been upgraded and, if necessary, the file opened, @@ -53941,7 +60592,7 @@ static int syncJournal(Pager *pPager, int newHdr){ ** in Pager.dbFileVers[] is updated to match the new value stored in ** the database file. ** -** If everything is successful, SQLITE_OK is returned. If an IO error +** If everything is successful, SQLITE_OK is returned. If an IO error ** occurs, an IO error code is returned. Or, if the EXCLUSIVE lock cannot ** be obtained, SQLITE_BUSY is returned. */ @@ -53967,7 +60618,7 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ ** file size will be. */ assert( rc!=SQLITE_OK || isOpen(pPager->fd) ); - if( rc==SQLITE_OK + if( rc==SQLITE_OK && pPager->dbHintSizedbSize && (pList->pDirty || pList->pgno>pPager->dbHintSize) ){ @@ -53989,20 +60640,19 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ */ if( pgno<=pPager->dbSize && 0==(pList->flags&PGHDR_DONT_WRITE) ){ i64 offset = (pgno-1)*(i64)pPager->pageSize; /* Offset to write */ - char *pData; /* Data to write */ + char *pData; /* Data to write */ assert( (pList->flags&PGHDR_NEED_SYNC)==0 ); if( pList->pgno==1 ) pager_write_changecounter(pList); - /* Encode the database */ - CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM_BKPT, pData); + pData = pList->pData; /* Write out the page data. */ rc = sqlite3OsWrite(pPager->fd, pData, pPager->pageSize, offset); /* If page 1 was just written, update Pager.dbFileVers to match - ** the value now stored in the database file. If writing this - ** page caused the database file to grow, update dbFileSize. + ** the value now stored in the database file. If writing this + ** page caused the database file to grow, update dbFileSize. */ if( pgno==1 ){ memcpy(&pPager->dbFileVers, &pData[24], sizeof(pPager->dbFileVers)); @@ -54030,18 +60680,18 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ } /* -** Ensure that the sub-journal file is open. If it is already open, this +** Ensure that the sub-journal file is open. If it is already open, this ** function is a no-op. ** -** SQLITE_OK is returned if everything goes according to plan. An -** SQLITE_IOERR_XXX error code is returned if a call to sqlite3OsOpen() +** SQLITE_OK is returned if everything goes according to plan. An +** SQLITE_IOERR_XXX error code is returned if a call to sqlite3OsOpen() ** fails. */ static int openSubJournal(Pager *pPager){ int rc = SQLITE_OK; if( !isOpen(pPager->sjfd) ){ - const int flags = SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_READWRITE - | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE + const int flags = SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_READWRITE + | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE; int nStmtSpill = sqlite3Config.nStmtSpill; if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY || pPager->subjInMemory ){ @@ -54053,13 +60703,13 @@ static int openSubJournal(Pager *pPager){ } /* -** Append a record of the current state of page pPg to the sub-journal. +** Append a record of the current state of page pPg to the sub-journal. ** ** If successful, set the bit corresponding to pPg->pgno in the bitvecs ** for all open savepoints before returning. ** ** This function returns SQLITE_OK if everything is successful, an IO -** error code if the attempt to write to the sub-journal fails, or +** error code if the attempt to write to the sub-journal fails, or ** SQLITE_NOMEM if a malloc fails while setting a bit in a savepoint ** bitvec. */ @@ -54072,9 +60722,9 @@ static int subjournalPage(PgHdr *pPg){ assert( pPager->useJournal ); assert( isOpen(pPager->jfd) || pagerUseWal(pPager) ); assert( isOpen(pPager->sjfd) || pPager->nSubRec==0 ); - assert( pagerUseWal(pPager) - || pageInJournal(pPager, pPg) - || pPg->pgno>pPager->dbOrigSize + assert( pagerUseWal(pPager) + || pageInJournal(pPager, pPg) + || pPg->pgno>pPager->dbOrigSize ); rc = openSubJournal(pPager); @@ -54084,12 +60734,6 @@ static int subjournalPage(PgHdr *pPg){ void *pData = pPg->pData; i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize); char *pData2; - -#if SQLITE_HAS_CODEC - if( !pPager->subjInMemory ){ - CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2); - }else -#endif pData2 = pData; PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno)); rc = write32bits(pPager->sjfd, offset, pPg->pgno); @@ -54117,14 +60761,14 @@ static int subjournalPageIfRequired(PgHdr *pPg){ ** This function is called by the pcache layer when it has reached some ** soft memory limit. The first argument is a pointer to a Pager object ** (cast as a void*). The pager is always 'purgeable' (not an in-memory -** database). The second argument is a reference to a page that is +** database). The second argument is a reference to a page that is ** currently dirty but has no outstanding references. The page -** is always associated with the Pager object passed as the first +** is always associated with the Pager object passed as the first ** argument. ** ** The job of this function is to make pPg clean by writing its contents ** out to the database file, if possible. This may involve syncing the -** journal file. +** journal file. ** ** If successful, sqlite3PcacheMakeClean() is called on the page and ** SQLITE_OK returned. If an IO error occurs while trying to make the @@ -54149,7 +60793,7 @@ static int pagerStress(void *p, PgHdr *pPg){ ** a rollback or by user request, respectively. ** ** Spilling is also prohibited when in an error state since that could - ** lead to database corruption. In the current implementation it + ** lead to database corruption. In the current implementation it ** is impossible for sqlite3PcacheFetch() to be called with createFlag==3 ** while in the error state, hence it is impossible for this routine to ** be called in the error state. Nevertheless, we include a NEVER() @@ -54170,26 +60814,26 @@ static int pagerStress(void *p, PgHdr *pPg){ pPg->pDirty = 0; if( pagerUseWal(pPager) ){ /* Write a single frame for this page to the log. */ - rc = subjournalPageIfRequired(pPg); + rc = subjournalPageIfRequired(pPg); if( rc==SQLITE_OK ){ rc = pagerWalFrames(pPager, pPg, 0, 0); } }else{ - + #ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE if( pPager->tempFile==0 ){ rc = sqlite3JournalCreate(pPager->jfd); if( rc!=SQLITE_OK ) return pager_error(pPager, rc); } #endif - + /* Sync the journal file if required. */ - if( pPg->flags&PGHDR_NEED_SYNC + if( pPg->flags&PGHDR_NEED_SYNC || pPager->eState==PAGER_WRITER_CACHEMOD ){ rc = syncJournal(pPager, 1); } - + /* Write the contents of the page out to the database file. */ if( rc==SQLITE_OK ){ assert( (pPg->flags&PGHDR_NEED_SYNC)==0 ); @@ -54203,7 +60847,7 @@ static int pagerStress(void *p, PgHdr *pPg){ sqlite3PcacheMakeClean(pPg); } - return pager_error(pPager, rc); + return pager_error(pPager, rc); } /* @@ -54234,8 +60878,8 @@ SQLITE_PRIVATE int sqlite3PagerFlush(Pager *pPager){ ** The zFilename argument is the path to the database file to open. ** If zFilename is NULL then a randomly-named temporary file is created ** and used as the file to be cached. Temporary files are be deleted -** automatically when they are closed. If zFilename is ":memory:" then -** all information is held in cache. It is never written to disk. +** automatically when they are closed. If zFilename is ":memory:" then +** all information is held in cache. It is never written to disk. ** This can be used to implement an in-memory database. ** ** The nExtra parameter specifies the number of bytes of space allocated @@ -54249,13 +60893,13 @@ SQLITE_PRIVATE int sqlite3PagerFlush(Pager *pPager){ ** of the PAGER_* flags. ** ** The vfsFlags parameter is a bitmask to pass to the flags parameter -** of the xOpen() method of the supplied VFS when opening files. +** of the xOpen() method of the supplied VFS when opening files. ** -** If the pager object is allocated and the specified file opened +** If the pager object is allocated and the specified file opened ** successfully, SQLITE_OK is returned and *ppPager set to point to ** the new pager object. If an error occurs, *ppPager is set to NULL ** and error code returned. This function may return SQLITE_NOMEM -** (sqlite3Malloc() is used to allocate memory), SQLITE_CANTOPEN or +** (sqlite3Malloc() is used to allocate memory), SQLITE_CANTOPEN or ** various SQLITE_IO_XXX errors. */ SQLITE_PRIVATE int sqlite3PagerOpen( @@ -54272,11 +60916,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( int rc = SQLITE_OK; /* Return code */ int tempFile = 0; /* True for temp files (incl. in-memory files) */ int memDb = 0; /* True if this is an in-memory file */ -#ifdef SQLITE_ENABLE_DESERIALIZE int memJM = 0; /* Memory journal mode */ -#else -# define memJM 0 -#endif int readOnly = 0; /* True if this is a read-only file */ int journalFileSize; /* Bytes to allocate for each journal fd */ char *zPathname = 0; /* Full path to database file */ @@ -54285,7 +60925,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */ u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */ const char *zUri = 0; /* URI args to copy */ - int nUri = 0; /* Number of bytes of URI args at *zUri */ + int nUriByte = 1; /* Number of bytes of URI args at *zUri */ /* Figure out how much space is required for each journal file-handle ** (there are two of them, the main journal and the sub-journal). */ @@ -54319,14 +60959,23 @@ SQLITE_PRIVATE int sqlite3PagerOpen( } zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */ rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname); + if( rc!=SQLITE_OK ){ + if( rc==SQLITE_OK_SYMLINK ){ + if( vfsFlags & SQLITE_OPEN_NOFOLLOW ){ + rc = SQLITE_CANTOPEN_SYMLINK; + }else{ + rc = SQLITE_OK; + } + } + } nPathname = sqlite3Strlen30(zPathname); z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1]; while( *z ){ - z += sqlite3Strlen30(z)+1; - z += sqlite3Strlen30(z)+1; + z += strlen(z)+1; + z += strlen(z)+1; } - nUri = (int)(&z[1] - zUri); - assert( nUri>=0 ); + nUriByte = (int)(&z[1] - zUri); + assert( nUriByte>=1 ); if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){ /* This branch is taken when the journal path required by ** the database being opened will be more than pVfs->mxPathname @@ -54343,7 +60992,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( } /* Allocate memory for the Pager structure, PCache object, the - ** three file descriptors, the database file name and the journal + ** three file descriptors, the database file name and the journal ** file name. The layout in memory is as follows: ** ** Pager object (sizeof(Pager) bytes) @@ -54351,50 +61000,113 @@ SQLITE_PRIVATE int sqlite3PagerOpen( ** Database file handle (pVfs->szOsFile bytes) ** Sub-journal file handle (journalFileSize bytes) ** Main journal file handle (journalFileSize bytes) + ** Ptr back to the Pager (sizeof(Pager*) bytes) + ** \0\0\0\0 database prefix (4 bytes) ** Database file name (nPathname+1 bytes) - ** Journal file name (nPathname+8+1 bytes) + ** URI query parameters (nUriByte bytes) + ** Journal filename (nPathname+8+1 bytes) + ** WAL filename (nPathname+4+1 bytes) + ** \0\0\0 terminator (3 bytes) + ** + ** Some 3rd-party software, over which we have no control, depends on + ** the specific order of the filenames and the \0 separators between them + ** so that it can (for example) find the database filename given the WAL + ** filename without using the sqlite3_filename_database() API. This is a + ** misuse of SQLite and a bug in the 3rd-party software, but the 3rd-party + ** software is in widespread use, so we try to avoid changing the filename + ** order and formatting if possible. In particular, the details of the + ** filename format expected by 3rd-party software should be as follows: + ** + ** - Main Database Path + ** - \0 + ** - Multiple URI components consisting of: + ** - Key + ** - \0 + ** - Value + ** - \0 + ** - \0 + ** - Journal Path + ** - \0 + ** - WAL Path (zWALName) + ** - \0 + ** + ** The sqlite3_create_filename() interface and the databaseFilename() utility + ** that is used by sqlite3_filename_database() and kin also depend on the + ** specific formatting and order of the various filenames, so if the format + ** changes here, be sure to change it there as well. */ + assert( SQLITE_PTRSIZE==sizeof(Pager*) ); pPtr = (u8 *)sqlite3MallocZero( - ROUND8(sizeof(*pPager)) + /* Pager structure */ - ROUND8(pcacheSize) + /* PCache object */ - ROUND8(pVfs->szOsFile) + /* The main db file */ - journalFileSize * 2 + /* The two journal files */ - nPathname + 1 + nUri + /* zFilename */ - nPathname + 8 + 2 /* zJournal */ + ROUND8(sizeof(*pPager)) + /* Pager structure */ + ROUND8(pcacheSize) + /* PCache object */ + ROUND8(pVfs->szOsFile) + /* The main db file */ + journalFileSize * 2 + /* The two journal files */ + SQLITE_PTRSIZE + /* Space to hold a pointer */ + 4 + /* Database prefix */ + nPathname + 1 + /* database filename */ + nUriByte + /* query parameters */ + nPathname + 8 + 1 + /* Journal filename */ #ifndef SQLITE_OMIT_WAL - + nPathname + 4 + 2 /* zWal */ + nPathname + 4 + 1 + /* WAL filename */ #endif + 3 /* Terminator */ ); assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) ); if( !pPtr ){ sqlite3DbFree(0, zPathname); return SQLITE_NOMEM_BKPT; } - pPager = (Pager*)(pPtr); - pPager->pPCache = (PCache*)(pPtr += ROUND8(sizeof(*pPager))); - pPager->fd = (sqlite3_file*)(pPtr += ROUND8(pcacheSize)); - pPager->sjfd = (sqlite3_file*)(pPtr += ROUND8(pVfs->szOsFile)); - pPager->jfd = (sqlite3_file*)(pPtr += journalFileSize); - pPager->zFilename = (char*)(pPtr += journalFileSize); + pPager = (Pager*)pPtr; pPtr += ROUND8(sizeof(*pPager)); + pPager->pPCache = (PCache*)pPtr; pPtr += ROUND8(pcacheSize); + pPager->fd = (sqlite3_file*)pPtr; pPtr += ROUND8(pVfs->szOsFile); + pPager->sjfd = (sqlite3_file*)pPtr; pPtr += journalFileSize; + pPager->jfd = (sqlite3_file*)pPtr; pPtr += journalFileSize; assert( EIGHT_BYTE_ALIGNMENT(pPager->jfd) ); + memcpy(pPtr, &pPager, SQLITE_PTRSIZE); pPtr += SQLITE_PTRSIZE; - /* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */ - if( zPathname ){ - assert( nPathname>0 ); - pPager->zJournal = (char*)(pPtr += nPathname + 1 + nUri); - memcpy(pPager->zFilename, zPathname, nPathname); - if( nUri ) memcpy(&pPager->zFilename[nPathname+1], zUri, nUri); - memcpy(pPager->zJournal, zPathname, nPathname); - memcpy(&pPager->zJournal[nPathname], "-journal\000", 8+2); - sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal); -#ifndef SQLITE_OMIT_WAL - pPager->zWal = &pPager->zJournal[nPathname+8+1]; - memcpy(pPager->zWal, zPathname, nPathname); - memcpy(&pPager->zWal[nPathname], "-wal\000", 4+1); - sqlite3FileSuffix3(pPager->zFilename, pPager->zWal); -#endif - sqlite3DbFree(0, zPathname); + /* Fill in the Pager.zFilename and pPager.zQueryParam fields */ + pPtr += 4; /* Skip zero prefix */ + pPager->zFilename = (char*)pPtr; + if( nPathname>0 ){ + memcpy(pPtr, zPathname, nPathname); pPtr += nPathname + 1; + if( zUri ){ + memcpy(pPtr, zUri, nUriByte); pPtr += nUriByte; + }else{ + pPtr++; + } } + + + /* Fill in Pager.zJournal */ + if( nPathname>0 ){ + pPager->zJournal = (char*)pPtr; + memcpy(pPtr, zPathname, nPathname); pPtr += nPathname; + memcpy(pPtr, "-journal",8); pPtr += 8 + 1; +#ifdef SQLITE_ENABLE_8_3_NAMES + sqlite3FileSuffix3(zFilename,pPager->zJournal); + pPtr = (u8*)(pPager->zJournal + sqlite3Strlen30(pPager->zJournal)+1); +#endif + }else{ + pPager->zJournal = 0; + } + +#ifndef SQLITE_OMIT_WAL + /* Fill in Pager.zWal */ + if( nPathname>0 ){ + pPager->zWal = (char*)pPtr; + memcpy(pPtr, zPathname, nPathname); pPtr += nPathname; + memcpy(pPtr, "-wal", 4); pPtr += 4 + 1; +#ifdef SQLITE_ENABLE_8_3_NAMES + sqlite3FileSuffix3(zFilename, pPager->zWal); + pPtr = (u8*)(pPager->zWal + sqlite3Strlen30(pPager->zWal)+1); +#endif + }else{ + pPager->zWal = 0; + } +#endif + (void)pPtr; /* Suppress warning about unused pPtr value */ + + if( nPathname ) sqlite3DbFree(0, zPathname); pPager->pVfs = pVfs; pPager->vfsFlags = vfsFlags; @@ -54404,9 +61116,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( int fout = 0; /* VFS flags returned by xOpen() */ rc = sqlite3OsOpen(pVfs, pPager->zFilename, pPager->fd, vfsFlags, &fout); assert( !memDb ); -#ifdef SQLITE_ENABLE_DESERIALIZE - memJM = (fout&SQLITE_OPEN_MEMORY)!=0; -#endif + pPager->memVfs = memJM = (fout&SQLITE_OPEN_MEMORY)!=0; readOnly = (fout&SQLITE_OPEN_READONLY)!=0; /* If the file was successfully opened for read/write access, @@ -54443,9 +61153,9 @@ SQLITE_PRIVATE int sqlite3PagerOpen( } #endif } - pPager->noLock = sqlite3_uri_boolean(zFilename, "nolock", 0); + pPager->noLock = sqlite3_uri_boolean(pPager->zFilename, "nolock", 0); if( (iDc & SQLITE_IOCAP_IMMUTABLE)!=0 - || sqlite3_uri_boolean(zFilename, "immutable", 0) ){ + || sqlite3_uri_boolean(pPager->zFilename, "immutable", 0) ){ vfsFlags |= SQLITE_OPEN_READONLY; goto act_like_temp_file; } @@ -54460,7 +61170,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( ** disk and uses an in-memory rollback journal. ** ** This branch also runs for files marked as immutable. - */ + */ act_like_temp_file: tempFile = 1; pPager->eState = PAGER_READER; /* Pretend we already have a lock */ @@ -54469,7 +61179,7 @@ act_like_temp_file: readOnly = (vfsFlags&SQLITE_OPEN_READONLY); } - /* The following call to PagerSetPagesize() serves to set the value of + /* The following call to PagerSetPagesize() serves to set the value of ** Pager.pageSize and to allocate the Pager.pTmpSpace buffer. */ if( rc==SQLITE_OK ){ @@ -54509,26 +61219,15 @@ act_like_temp_file: /* pPager->state = PAGER_UNLOCK; */ /* pPager->errMask = 0; */ pPager->tempFile = (u8)tempFile; - assert( tempFile==PAGER_LOCKINGMODE_NORMAL + assert( tempFile==PAGER_LOCKINGMODE_NORMAL || tempFile==PAGER_LOCKINGMODE_EXCLUSIVE ); assert( PAGER_LOCKINGMODE_EXCLUSIVE==1 ); - pPager->exclusiveMode = (u8)tempFile; + pPager->exclusiveMode = (u8)tempFile; pPager->changeCountDone = pPager->tempFile; pPager->memDb = (u8)memDb; pPager->readOnly = (u8)readOnly; assert( useJournal || pPager->tempFile ); - pPager->noSync = pPager->tempFile; - if( pPager->noSync ){ - assert( pPager->fullSync==0 ); - assert( pPager->extraSync==0 ); - assert( pPager->syncFlags==0 ); - assert( pPager->walSyncFlags==0 ); - }else{ - pPager->fullSync = 1; - pPager->extraSync = 0; - pPager->syncFlags = SQLITE_SYNC_NORMAL; - pPager->walSyncFlags = SQLITE_SYNC_NORMAL | (SQLITE_SYNC_NORMAL<<2); - } + sqlite3PagerSetFlags(pPager, (SQLITE_DEFAULT_SYNCHRONOUS+1)|PAGER_CACHESPILL); /* pPager->pFirst = 0; */ /* pPager->pFirstSynced = 0; */ /* pPager->pLast = 0; */ @@ -54552,12 +61251,25 @@ act_like_temp_file: return SQLITE_OK; } +/* +** Return the sqlite3_file for the main database given the name +** of the corresponding WAL or Journal name as passed into +** xOpen. +*/ +SQLITE_API sqlite3_file *sqlite3_database_file_object(const char *zName){ + Pager *pPager; + while( zName[-1]!=0 || zName[-2]!=0 || zName[-3]!=0 || zName[-4]!=0 ){ + zName--; + } + pPager = *(Pager**)(zName - 4 - sizeof(Pager*)); + return pPager->fd; +} /* ** This function is called after transitioning from PAGER_UNLOCK to ** PAGER_SHARED state. It tests if there is a hot journal present in -** the file-system for the given pager. A hot journal is one that +** the file-system for the given pager. A hot journal is one that ** needs to be played back. According to this function, a hot-journal ** file exists if the following criteria are met: ** @@ -54572,14 +61284,14 @@ act_like_temp_file: ** just deleted using OsDelete, *pExists is set to 0 and SQLITE_OK ** is returned. ** -** This routine does not check if there is a master journal filename -** at the end of the file. If there is, and that master journal file +** This routine does not check if there is a super-journal filename +** at the end of the file. If there is, and that super-journal file ** does not exist, then the journal file is not really hot. In this ** case this routine will return a false-positive. The pager_playback() -** routine will discover that the journal file is not really hot and -** will not roll it back. +** routine will discover that the journal file is not really hot and +** will not roll it back. ** -** If a hot-journal file is found to exist, *pExists is set to 1 and +** If a hot-journal file is found to exist, *pExists is set to 1 and ** SQLITE_OK returned. If no hot-journal file is present, *pExists is ** set to 0 and SQLITE_OK returned. If an IO error occurs while trying ** to determine whether or not a hot-journal file exists, the IO error @@ -54607,7 +61319,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){ int locked = 0; /* True if some process holds a RESERVED lock */ /* Race condition here: Another process might have been holding the - ** the RESERVED lock and have a journal open at the sqlite3OsAccess() + ** the RESERVED lock and have a journal open at the sqlite3OsAccess() ** call above, but then delete the journal and drop the lock before ** we get to the following sqlite3OsCheckReservedLock() call. If that ** is the case, this routine might think there is a hot journal when @@ -54640,7 +61352,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){ /* The journal file exists and no other connection has a reserved ** or greater lock on the database file. Now check that there is ** at least one non-zero bytes at the start of the journal file. - ** If there is, then we consider this journal to be hot. If not, + ** If there is, then we consider this journal to be hot. If not, ** it can be ignored. */ if( !jrnlOpen ){ @@ -54690,7 +61402,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){ ** on the database file), then an attempt is made to obtain a ** SHARED lock on the database file. Immediately after obtaining ** the SHARED lock, the file-system is checked for a hot-journal, -** which is played back if present. Following any hot-journal +** which is played back if present. Following any hot-journal ** rollback, the contents of the cache are validated by checking ** the 'change-counter' field of the database file header and ** discarded if they are found to be invalid. @@ -54701,8 +61413,8 @@ static int hasHotJournal(Pager *pPager, int *pExists){ ** the contents of the page cache and rolling back any open journal ** file. ** -** If everything is successful, SQLITE_OK is returned. If an IO error -** occurs while locking the database, checking for a hot-journal file or +** If everything is successful, SQLITE_OK is returned. If an IO error +** occurs while locking the database, checking for a hot-journal file or ** rolling back a journal file, the IO error code is returned. */ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ @@ -54710,7 +61422,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ /* This routine is only called from b-tree and only when there are no ** outstanding pages. This implies that the pager state should either - ** be OPEN or READER. READER is only possible if the pager is or was in + ** be OPEN or READER. READER is only possible if the pager is or was in ** exclusive access mode. */ assert( sqlite3PcacheRefCount(pPager->pPCache)==0 ); assert( assert_pager_state(pPager) ); @@ -54748,12 +61460,12 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ** important that a RESERVED lock is not obtained on the way to the ** EXCLUSIVE lock. If it were, another process might open the ** database file, detect the RESERVED lock, and conclude that the - ** database is safe to read while this process is still rolling the + ** database is safe to read while this process is still rolling the ** hot-journal back. - ** + ** ** Because the intermediate RESERVED lock is not requested, any - ** other process attempting to access the database file will get to - ** this point in the code and fail to obtain its own EXCLUSIVE lock + ** other process attempting to access the database file will get to + ** this point in the code and fail to obtain its own EXCLUSIVE lock ** on the database file. ** ** Unless the pager is in locking_mode=exclusive mode, the lock is @@ -54763,21 +61475,21 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ if( rc!=SQLITE_OK ){ goto failed; } - - /* If it is not already open and the file exists on disk, open the - ** journal for read/write access. Write access is required because - ** in exclusive-access mode the file descriptor will be kept open - ** and possibly used for a transaction later on. Also, write-access - ** is usually required to finalize the journal in journal_mode=persist + + /* If it is not already open and the file exists on disk, open the + ** journal for read/write access. Write access is required because + ** in exclusive-access mode the file descriptor will be kept open + ** and possibly used for a transaction later on. Also, write-access + ** is usually required to finalize the journal in journal_mode=persist ** mode (and also for journal_mode=truncate on some systems). ** - ** If the journal does not exist, it usually means that some - ** other connection managed to get in and roll it back before - ** this connection obtained the exclusive lock above. Or, it + ** If the journal does not exist, it usually means that some + ** other connection managed to get in and roll it back before + ** this connection obtained the exclusive lock above. Or, it ** may mean that the pager was in the error-state when this ** function was called and the journal file does not exist. */ - if( !isOpen(pPager->jfd) ){ + if( !isOpen(pPager->jfd) && pPager->journalMode!=PAGER_JOURNALMODE_OFF ){ sqlite3_vfs * const pVfs = pPager->pVfs; int bExists; /* True if journal file exists */ rc = sqlite3OsAccess( @@ -54794,7 +61506,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ } } } - + /* Playback and delete the journal. Drop the database write ** lock and reacquire the read lock. Purge the cache before ** playing back the hot-journal so that we don't end up with @@ -54819,8 +61531,8 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ** or roll back a hot-journal while holding an EXCLUSIVE lock. The ** pager_unlock() routine will be called before returning to unlock ** the file. If the unlock attempt fails, then Pager.eLock must be - ** set to UNKNOWN_LOCK (see the comment above the #define for - ** UNKNOWN_LOCK above for an explanation). + ** set to UNKNOWN_LOCK (see the comment above the #define for + ** UNKNOWN_LOCK above for an explanation). ** ** In order to get pager_unlock() to do this, set Pager.eState to ** PAGER_ERROR now. This is not actually counted as a transition @@ -54828,7 +61540,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ** since we know that the same call to pager_unlock() will very ** shortly transition the pager object to the OPEN state. Calling ** assert_pager_state() would fail now, as it should not be possible - ** to be in ERROR state when there are zero outstanding page + ** to be in ERROR state when there are zero outstanding page ** references. */ pager_error(pPager, rc); @@ -54853,8 +61565,8 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ** a 32-bit counter that is incremented with each change. The ** other bytes change randomly with each file change when ** a codec is in use. - ** - ** There is a vanishingly small chance that a change will not be + ** + ** There is a vanishingly small chance that a change will not be ** detected. The chance of an undetected change is so small that ** it can be neglected. */ @@ -54921,7 +61633,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ** Except, in locking_mode=EXCLUSIVE when there is nothing to in ** the rollback journal, the unlock is not performed and there is ** nothing to rollback, so this routine is a no-op. -*/ +*/ static void pagerUnlockIfUnused(Pager *pPager){ if( sqlite3PcacheRefCount(pPager->pPCache)==0 ){ assert( pPager->nMmapOut==0 ); /* because page1 is never memory mapped */ @@ -54931,7 +61643,7 @@ static void pagerUnlockIfUnused(Pager *pPager){ /* ** The page getter methods each try to acquire a reference to a -** page with page number pgno. If the requested reference is +** page with page number pgno. If the requested reference is ** successfully obtained, it is copied to *ppPage and SQLITE_OK returned. ** ** There are different implementations of the getter method depending @@ -54941,22 +61653,22 @@ static void pagerUnlockIfUnused(Pager *pPager){ ** getPageError() -- Used if the pager is in an error state ** getPageMmap() -- Used if memory-mapped I/O is enabled ** -** If the requested page is already in the cache, it is returned. +** If the requested page is already in the cache, it is returned. ** Otherwise, a new page object is allocated and populated with data ** read from the database file. In some cases, the pcache module may ** choose not to allocate a new page object and may reuse an existing ** object with no outstanding references. ** -** The extra data appended to a page is always initialized to zeros the -** first time a page is loaded into memory. If the page requested is +** The extra data appended to a page is always initialized to zeros the +** first time a page is loaded into memory. If the page requested is ** already in the cache when this function is called, then the extra ** data is left as it was when the page object was last used. ** -** If the database image is smaller than the requested page or if -** the flags parameter contains the PAGER_GET_NOCONTENT bit and the -** requested page is not already stored in the cache, then no -** actual disk read occurs. In this case the memory image of the -** page is initialized to all zeros. +** If the database image is smaller than the requested page or if +** the flags parameter contains the PAGER_GET_NOCONTENT bit and the +** requested page is not already stored in the cache, then no +** actual disk read occurs. In this case the memory image of the +** page is initialized to all zeros. ** ** If PAGER_GET_NOCONTENT is true, it means that we do not care about ** the contents of the page. This occurs in two scenarios: @@ -55022,18 +61734,18 @@ static int getPageNormal( if( pPg->pPager && !noContent ){ /* In this case the pcache already contains an initialized copy of ** the page. Return without further ado. */ - assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) ); + assert( pgno!=PAGER_SJ_PGNO(pPager) ); pPager->aStat[PAGER_STAT_HIT]++; return SQLITE_OK; }else{ - /* The pager cache has created a new page. Its content needs to + /* The pager cache has created a new page. Its content needs to ** be initialized. But first some error checks: ** - ** (1) The maximum page number is 2^31 + ** (*) obsolete. Was: maximum page number is 2^31 ** (2) Never try to fetch the locking page */ - if( pgno>PAGER_MAX_PGNO || pgno==PAGER_MJ_PGNO(pPager) ){ + if( pgno==PAGER_SJ_PGNO(pPager) ){ rc = SQLITE_CORRUPT_BKPT; goto pager_acquire_err; } @@ -55044,13 +61756,17 @@ static int getPageNormal( if( !isOpen(pPager->fd) || pPager->dbSizepPager->mxPgno ){ rc = SQLITE_FULL; + if( pgno<=pPager->dbSize ){ + sqlite3PcacheRelease(pPg); + pPg = 0; + } goto pager_acquire_err; } if( noContent ){ /* Failure to set the bits in the InJournal bit-vectors is benign. - ** It merely means that we might do some extra work to journal a - ** page that does not need to be journaled. Nevertheless, be sure - ** to test the case where a malloc error occurs while trying to set + ** It merely means that we might do some extra work to journal a + ** page that does not need to be journaled. Nevertheless, be sure + ** to test the case where a malloc error occurs while trying to set ** a bit in a bit vector. */ sqlite3BeginBenignMalloc(); @@ -55100,16 +61816,13 @@ static int getPageMMap( /* It is acceptable to use a read-only (mmap) page for any page except ** page 1 if there is no write-transaction open or the ACQUIRE_READONLY - ** flag was specified by the caller. And so long as the db is not a + ** flag was specified by the caller. And so long as the db is not a ** temporary or in-memory database. */ const int bMmapOk = (pgno>1 && (pPager->eState==PAGER_READER || (flags & PAGER_GET_READONLY)) ); assert( USEFETCH(pPager) ); -#ifdef SQLITE_HAS_CODEC - assert( pPager->xCodec==0 ); -#endif /* Optimization note: Adding the "pgno<=1" term before "pgno==0" here ** allows the compiler optimizer to reuse the results of the "pgno>1" @@ -55132,7 +61845,7 @@ static int getPageMMap( } if( bMmapOk && iFrame==0 ){ void *pData = 0; - rc = sqlite3OsFetch(pPager->fd, + rc = sqlite3OsFetch(pPager->fd, (i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData ); if( rc==SQLITE_OK && pData ){ @@ -55182,18 +61895,19 @@ SQLITE_PRIVATE int sqlite3PagerGet( DbPage **ppPage, /* Write a pointer to the page here */ int flags /* PAGER_GET_XXX flags */ ){ + /* printf("PAGE %u\n", pgno); fflush(stdout); */ return pPager->xGet(pPager, pgno, ppPage, flags); } /* ** Acquire a page if it is already in the in-memory cache. Do ** not read the page from disk. Return a pointer to the page, -** or 0 if the page is not in cache. +** or 0 if the page is not in cache. ** ** See also sqlite3PagerGet(). The difference between this routine ** and sqlite3PagerGet() is that _get() will go to the disk and read ** in the page if the page is not already in cache. This routine -** returns NULL if the page is not in cache or if a disk I/O error +** returns NULL if the page is not in cache or if a disk I/O error ** has ever happened. */ SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno){ @@ -55210,10 +61924,12 @@ SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno){ /* ** Release a page reference. ** -** The sqlite3PagerUnref() and sqlite3PagerUnrefNotNull() may only be -** used if we know that the page being released is not the last page. +** The sqlite3PagerUnref() and sqlite3PagerUnrefNotNull() may only be used +** if we know that the page being released is not the last reference to page1. ** The btree layer always holds page1 open until the end, so these first -** to routines can be used to release any page other than BtShared.pPage1. +** two routines can be used to release any page other than BtShared.pPage1. +** The assert() at tag-20230419-2 proves that this constraint is always +** honored. ** ** Use sqlite3PagerUnrefPageOne() to release page1. This latter routine ** checks the total number of outstanding pages and if the number of @@ -55229,7 +61945,7 @@ SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage *pPg){ sqlite3PcacheRelease(pPg); } /* Do not use this routine to release the last reference to page1 */ - assert( sqlite3PcacheRefCount(pPager->pPCache)>0 ); + assert( sqlite3PcacheRefCount(pPager->pPCache)>0 ); /* tag-20230419-2 */ } SQLITE_PRIVATE void sqlite3PagerUnref(DbPage *pPg){ if( pPg ) sqlite3PagerUnrefNotNull(pPg); @@ -55240,31 +61956,30 @@ SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage *pPg){ assert( pPg->pgno==1 ); assert( (pPg->flags & PGHDR_MMAP)==0 ); /* Page1 is never memory mapped */ pPager = pPg->pPager; - sqlite3PagerResetLockTimeout(pPager); sqlite3PcacheRelease(pPg); pagerUnlockIfUnused(pPager); } /* ** This function is called at the start of every write transaction. -** There must already be a RESERVED or EXCLUSIVE lock on the database +** There must already be a RESERVED or EXCLUSIVE lock on the database ** file when this routine is called. ** ** Open the journal file for pager pPager and write a journal header ** to the start of it. If there are active savepoints, open the sub-journal -** as well. This function is only used when the journal file is being -** opened to write a rollback log for a transaction. It is not used +** as well. This function is only used when the journal file is being +** opened to write a rollback log for a transaction. It is not used ** when opening a hot journal file to roll it back. ** ** If the journal file is already open (as it may be in exclusive mode), ** then this function just writes a journal header to the start of the -** already open file. +** already open file. ** ** Whether or not the journal file is opened by this function, the ** Pager.pInJournal bitvec structure is allocated. ** -** Return SQLITE_OK if everything is successful. Otherwise, return -** SQLITE_NOMEM if the attempt to allocate Pager.pInJournal fails, or +** Return SQLITE_OK if everything is successful. Otherwise, return +** SQLITE_NOMEM if the attempt to allocate Pager.pInJournal fails, or ** an IO error code if opening or writing the journal file fails. */ static int pager_open_journal(Pager *pPager){ @@ -55274,7 +61989,7 @@ static int pager_open_journal(Pager *pPager){ assert( pPager->eState==PAGER_WRITER_LOCKED ); assert( assert_pager_state(pPager) ); assert( pPager->pInJournal==0 ); - + /* If already in the error state, this function is a no-op. But on ** the other hand, this routine is never called if we are already in ** an error state. */ @@ -55285,7 +62000,7 @@ static int pager_open_journal(Pager *pPager){ if( pPager->pInJournal==0 ){ return SQLITE_NOMEM_BKPT; } - + /* Open the journal file if it is not already open. */ if( !isOpen(pPager->jfd) ){ if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ){ @@ -55296,12 +62011,13 @@ static int pager_open_journal(Pager *pPager){ if( pPager->tempFile ){ flags |= (SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL); + flags |= SQLITE_OPEN_EXCLUSIVE; nSpill = sqlite3Config.nStmtSpill; }else{ flags |= SQLITE_OPEN_MAIN_JOURNAL; nSpill = jrnlBufferSize(pPager); } - + /* Verify that the database still has the same name as it did when ** it was originally opened. */ rc = databaseIsUnmoved(pPager); @@ -55313,16 +62029,16 @@ static int pager_open_journal(Pager *pPager){ } assert( rc!=SQLITE_OK || isOpen(pPager->jfd) ); } - - - /* Write the first journal header to the journal file and open + + + /* Write the first journal header to the journal file and open ** the sub-journal if necessary. */ if( rc==SQLITE_OK ){ /* TODO: Check if all of these are really required. */ pPager->nRec = 0; pPager->journalOff = 0; - pPager->setMaster = 0; + pPager->setSuper = 0; pPager->journalHdr = 0; rc = writeJournalHdr(pPager); } @@ -55331,6 +62047,7 @@ static int pager_open_journal(Pager *pPager){ if( rc!=SQLITE_OK ){ sqlite3BitvecDestroy(pPager->pInJournal); pPager->pInJournal = 0; + pPager->journalOff = 0; }else{ assert( pPager->eState==PAGER_WRITER_LOCKED ); pPager->eState = PAGER_WRITER_CACHEMOD; @@ -55340,12 +62057,12 @@ static int pager_open_journal(Pager *pPager){ } /* -** Begin a write-transaction on the specified pager object. If a +** Begin a write-transaction on the specified pager object. If a ** write-transaction has already been opened, this function is a no-op. ** ** If the exFlag argument is false, then acquire at least a RESERVED ** lock on the database file. If exFlag is true, then acquire at least -** an EXCLUSIVE lock. If such a lock is already held, no locking +** an EXCLUSIVE lock. If such a lock is already held, no locking ** functions need be called. ** ** If the subjInMemory argument is non-zero, then any sub-journal opened @@ -55353,7 +62070,7 @@ static int pager_open_journal(Pager *pPager){ ** has no effect if the sub-journal is already opened (as it may be when ** running in exclusive mode) or if the transaction does not require a ** sub-journal. If the subjInMemory argument is zero, then any required -** sub-journal is implemented in-memory if pPager is an in-memory database, +** sub-journal is implemented in-memory if pPager is an in-memory database, ** or using a temporary file otherwise. */ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory){ @@ -55363,7 +62080,7 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory assert( pPager->eState>=PAGER_READER && pPager->eStatesubjInMemory = (u8)subjInMemory; - if( ALWAYS(pPager->eState==PAGER_READER) ){ + if( pPager->eState==PAGER_READER ){ assert( pPager->pInJournal==0 ); if( pagerUseWal(pPager) ){ @@ -55401,9 +62118,9 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory ** ** WAL mode sets Pager.eState to PAGER_WRITER_LOCKED or CACHEMOD ** when it has an open transaction, but never to DBMOD or FINISHED. - ** This is because in those states the code to roll back savepoint - ** transactions may copy data from the sub-journal into the database - ** file as well as into the page cache. Which would be incorrect in + ** This is because in those states the code to roll back savepoint + ** transactions may copy data from the sub-journal into the database + ** file as well as into the page cache. Which would be incorrect in ** WAL mode. */ pPager->eState = PAGER_WRITER_LOCKED; @@ -55435,10 +62152,10 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){ /* We should never write to the journal file the page that ** contains the database locks. The following assert verifies ** that we do not. */ - assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) ); + assert( pPg->pgno!=PAGER_SJ_PGNO(pPager) ); assert( pPager->journalHdr<=pPager->journalOff ); - CODEC2(pPager, pPg->pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2); + pData2 = pPg->pData; cksum = pager_cksum(pPager, (u8*)pData2); /* Even if an IO or diskfull error occurs while journalling the @@ -55457,11 +62174,11 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){ rc = write32bits(pPager->jfd, iOff+pPager->pageSize+4, cksum); if( rc!=SQLITE_OK ) return rc; - IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno, + IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno, pPager->journalOff, pPager->pageSize)); PAGER_INCR(sqlite3_pager_writej_count); PAGERTRACE(("JOURNAL %d page %d needSync=%d hash(%08x)\n", - PAGERID(pPager), pPg->pgno, + PAGERID(pPager), pPg->pgno, ((pPg->flags&PGHDR_NEED_SYNC)?1:0), pager_pagehash(pPg))); pPager->journalOff += 8 + pPager->pageSize; @@ -55476,9 +62193,9 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){ } /* -** Mark a single data page as writeable. The page is written into the +** Mark a single data page as writeable. The page is written into the ** main journal or sub-journal as required. If the page is written into -** one of the journals, the corresponding bit is set in the +** one of the journals, the corresponding bit is set in the ** Pager.pInJournal bitvec and the PagerSavepoint.pInSavepoint bitvecs ** of any open savepoints as appropriate. */ @@ -55486,7 +62203,7 @@ static int pager_write(PgHdr *pPg){ Pager *pPager = pPg->pPager; int rc = SQLITE_OK; - /* This routine is not called unless a write-transaction has already + /* This routine is not called unless a write-transaction has already ** been started. The journal file may or may not be open at this point. ** It is never called in the ERROR state. */ @@ -55503,7 +62220,7 @@ static int pager_write(PgHdr *pPg){ ** obtained the necessary locks to begin the write-transaction, but the ** rollback journal might not yet be open. Open it now if this is the case. ** - ** This is done before calling sqlite3PcacheMakeDirty() on the page. + ** This is done before calling sqlite3PcacheMakeDirty() on the page. ** Otherwise, if it were done after calling sqlite3PcacheMakeDirty(), then ** an error might occur and the pager would end up in WRITER_LOCKED state ** with pages marked as dirty in the cache. @@ -55548,7 +62265,7 @@ static int pager_write(PgHdr *pPg){ ** PGHDR_WRITEABLE bit that indicates that the page can be safely modified. */ pPg->flags |= PGHDR_WRITEABLE; - + /* If the statement journal is open and the page is not in it, ** then write the page into the statement journal. */ @@ -55614,7 +62331,7 @@ static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){ Pgno pg = pg1+ii; PgHdr *pPage; if( pg==pPg->pgno || !sqlite3BitvecTest(pPager->pInJournal, pg) ){ - if( pg!=PAGER_MJ_PGNO(pPager) ){ + if( pg!=PAGER_SJ_PGNO(pPager) ){ rc = sqlite3PagerGet(pPager, pg, &pPage, 0); if( rc==SQLITE_OK ){ rc = pager_write(pPage); @@ -55632,7 +62349,7 @@ static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){ } } - /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages + /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages ** starting at pg1, then it needs to be set for all of them. Because ** writing to any of these nPage pages may damage the others, the ** journal file must contain sync()ed copies of all of them @@ -55655,9 +62372,9 @@ static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){ } /* -** Mark a data page as writeable. This routine must be called before -** making changes to a page. The caller must check the return value -** of this function and be careful not to change any page data unless +** Mark a data page as writeable. This routine must be called before +** making changes to a page. The caller must check the return value +** of this function and be careful not to change any page data unless ** this routine returns SQLITE_OK. ** ** The difference between this function and pager_write() is that this @@ -55708,13 +62425,13 @@ SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage *pPg){ ** on the given page is unused. The pager marks the page as clean so ** that it does not get written to disk. ** -** Tests show that this optimization can quadruple the speed of large +** Tests show that this optimization can quadruple the speed of large ** DELETE operations. ** ** This optimization cannot be used with a temp-file, as the page may ** have been dirty at the start of the transaction. In that case, if -** memory pressure forces page pPg out of the cache, the data does need -** to be written out to disk so that it may be read back in if the +** memory pressure forces page pPg out of the cache, the data does need +** to be written out to disk so that it may be read back in if the ** current transaction is rolled back. */ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){ @@ -55730,17 +62447,17 @@ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){ } /* -** This routine is called to increment the value of the database file -** change-counter, stored as a 4-byte big-endian integer starting at +** This routine is called to increment the value of the database file +** change-counter, stored as a 4-byte big-endian integer starting at ** byte offset 24 of the pager file. The secondary change counter at ** 92 is also updated, as is the SQLite version number at offset 96. ** ** But this only happens if the pPager->changeCountDone flag is false. ** To avoid excess churning of page 1, the update only happens once. -** See also the pager_write_changecounter() routine that does an +** See also the pager_write_changecounter() routine that does an ** unconditional update of the change counters. ** -** If the isDirectMode flag is zero, then this is done by calling +** If the isDirectMode flag is zero, then this is done by calling ** sqlite3PagerWrite() on page 1, then modifying the contents of the ** page data. In this case the file will be updated when the current ** transaction is committed. @@ -55748,7 +62465,7 @@ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){ ** The isDirectMode flag may only be non-zero if the library was compiled ** with the SQLITE_ENABLE_ATOMIC_WRITE macro defined. In this case, ** if isDirect is non-zero, then the database file is updated directly -** by writing an updated version of page 1 using a call to the +** by writing an updated version of page 1 using a call to the ** sqlite3OsWrite() function. */ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ @@ -55777,7 +62494,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ # define DIRECT_MODE isDirectMode #endif - if( !pPager->changeCountDone && ALWAYS(pPager->dbSize>0) ){ + if( !pPager->changeCountDone && pPager->dbSize>0 ){ PgHdr *pPgHdr; /* Reference to page 1 */ assert( !pPager->tempFile && isOpen(pPager->fd) ); @@ -55787,7 +62504,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ assert( pPgHdr==0 || rc==SQLITE_OK ); /* If page one was fetched successfully, and this function is not - ** operating in direct-mode, make page 1 writable. When not in + ** operating in direct-mode, make page 1 writable. When not in ** direct mode, page 1 is always held in cache and hence the PagerGet() ** above is always successful - hence the ALWAYS on rc==SQLITE_OK. */ @@ -55803,7 +62520,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ if( DIRECT_MODE ){ const void *zBuf; assert( pPager->dbFileSize>0 ); - CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM_BKPT, zBuf); + zBuf = pPgHdr->pData; if( rc==SQLITE_OK ){ rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0); pPager->aStat[PAGER_STAT_WRITE]++; @@ -55834,9 +62551,9 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ ** If successful, or if called on a pager for which it is a no-op, this ** function returns SQLITE_OK. Otherwise, an IO error code is returned. */ -SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){ +SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper){ int rc = SQLITE_OK; - void *pArg = (void*)zMaster; + void *pArg = (void*)zSuper; rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC, pArg); if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK; if( rc==SQLITE_OK && !pPager->noSync ){ @@ -55848,22 +62565,22 @@ SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){ /* ** This function may only be called while a write-transaction is active in -** rollback. If the connection is in WAL mode, this call is a no-op. -** Otherwise, if the connection does not already have an EXCLUSIVE lock on +** rollback. If the connection is in WAL mode, this call is a no-op. +** Otherwise, if the connection does not already have an EXCLUSIVE lock on ** the database file, an attempt is made to obtain one. ** ** If the EXCLUSIVE lock is already held or the attempt to obtain it is ** successful, or the connection is in WAL mode, SQLITE_OK is returned. -** Otherwise, either SQLITE_BUSY or an SQLITE_IOERR_XXX error code is +** Otherwise, either SQLITE_BUSY or an SQLITE_IOERR_XXX error code is ** returned. */ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){ int rc = pPager->errCode; assert( assert_pager_state(pPager) ); if( rc==SQLITE_OK ){ - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - || pPager->eState==PAGER_WRITER_LOCKED + assert( pPager->eState==PAGER_WRITER_CACHEMOD + || pPager->eState==PAGER_WRITER_DBMOD + || pPager->eState==PAGER_WRITER_LOCKED ); assert( assert_pager_state(pPager) ); if( 0==pagerUseWal(pPager) ){ @@ -55874,24 +62591,24 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){ } /* -** Sync the database file for the pager pPager. zMaster points to the name -** of a master journal file that should be written into the individual -** journal file. zMaster may be NULL, which is interpreted as no master -** journal (a single database transaction). +** Sync the database file for the pager pPager. zSuper points to the name +** of a super-journal file that should be written into the individual +** journal file. zSuper may be NULL, which is interpreted as no +** super-journal (a single database transaction). ** ** This routine ensures that: ** ** * The database file change-counter is updated, ** * the journal is synced (unless the atomic-write optimization is used), -** * all dirty pages are written to the database file, +** * all dirty pages are written to the database file, ** * the database file is truncated (if required), and -** * the database file synced. +** * the database file synced. ** -** The only thing that remains to commit the transaction is to finalize -** (delete, truncate or zero the first part of) the journal file (or -** delete the master journal file if specified). +** The only thing that remains to commit the transaction is to finalize +** (delete, truncate or zero the first part of) the journal file (or +** delete the super-journal file if specified). ** -** Note that if zMaster==NULL, this does not overwrite a previous value +** Note that if zSuper==NULL, this does not overwrite a previous value ** passed to an sqlite3PagerCommitPhaseOne() call. ** ** If the final parameter - noSync - is true, then the database file itself @@ -55901,7 +62618,7 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){ */ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( Pager *pPager, /* Pager object */ - const char *zMaster, /* If not NULL, the master journal name */ + const char *zSuper, /* If not NULL, the super-journal name */ int noSync /* True to omit the xSync on the db file */ ){ int rc = SQLITE_OK; /* Return code */ @@ -55919,8 +62636,8 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( /* Provide the ability to easily simulate an I/O error during testing */ if( sqlite3FaultSim(400) ) return SQLITE_IOERR; - PAGERTRACE(("DATABASE SYNC: File=%s zMaster=%s nSize=%d\n", - pPager->zFilename, zMaster, pPager->dbSize)); + PAGERTRACE(("DATABASE SYNC: File=%s zSuper=%s nSize=%d\n", + pPager->zFilename, zSuper, pPager->dbSize)); /* If no database changes have been made, return early. */ if( pPager->eStatepBackup); }else{ + PgHdr *pList; if( pagerUseWal(pPager) ){ - PgHdr *pList = sqlite3PcacheDirtyList(pPager->pPCache); PgHdr *pPageOne = 0; + pList = sqlite3PcacheDirtyList(pPager->pPCache); if( pList==0 ){ /* Must have at least one page for the WAL commit flag. ** Ticket [2d1a5c67dfc2363e44f29d9bbd57f] 2011-05-18 */ @@ -55956,24 +62674,24 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( ** should be used. No rollback journal is created if batch-atomic-write ** is enabled. */ - sqlite3_file *fd = pPager->fd; #ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE - const int bBatch = zMaster==0 /* An SQLITE_IOCAP_BATCH_ATOMIC commit */ + sqlite3_file *fd = pPager->fd; + int bBatch = zSuper==0 /* An SQLITE_IOCAP_BATCH_ATOMIC commit */ && (sqlite3OsDeviceCharacteristics(fd) & SQLITE_IOCAP_BATCH_ATOMIC) && !pPager->noSync && sqlite3JournalIsInMemory(pPager->jfd); #else -# define bBatch 0 +# define bBatch 0 #endif #ifdef SQLITE_ENABLE_ATOMIC_WRITE /* The following block updates the change-counter. Exactly how it ** does this depends on whether or not the atomic-update optimization - ** was enabled at compile time, and if this transaction meets the - ** runtime criteria to use the operation: + ** was enabled at compile time, and if this transaction meets the + ** runtime criteria to use the operation: ** ** * The file-system supports the atomic-write property for - ** blocks of size page-size, and + ** blocks of size page-size, and ** * This commit is not part of a multi-file transaction, and ** * Exactly one page has been modified and store in the journal file. ** @@ -55983,7 +62701,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( ** is not applicable to this transaction, call sqlite3JournalCreate() ** to make sure the journal file has actually been created, then call ** pager_incr_changecounter() to update the change-counter in indirect - ** mode. + ** mode. ** ** Otherwise, if the optimization is both enabled and applicable, ** then call pager_incr_changecounter() to update the change-counter @@ -55992,19 +62710,19 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( */ if( bBatch==0 ){ PgHdr *pPg; - assert( isOpen(pPager->jfd) - || pPager->journalMode==PAGER_JOURNALMODE_OFF - || pPager->journalMode==PAGER_JOURNALMODE_WAL + assert( isOpen(pPager->jfd) + || pPager->journalMode==PAGER_JOURNALMODE_OFF + || pPager->journalMode==PAGER_JOURNALMODE_WAL ); - if( !zMaster && isOpen(pPager->jfd) - && pPager->journalOff==jrnlBufferSize(pPager) + if( !zSuper && isOpen(pPager->jfd) + && pPager->journalOff==jrnlBufferSize(pPager) && pPager->dbSize>=pPager->dbOrigSize && (!(pPg = sqlite3PcacheDirtyList(pPager->pPCache)) || 0==pPg->pDirty) ){ - /* Update the db file change counter via the direct-write method. The - ** following call will modify the in-memory representation of page 1 - ** to include the updated change counter and then write page 1 - ** directly to the database file. Because of the atomic-write + /* Update the db file change counter via the direct-write method. The + ** following call will modify the in-memory representation of page 1 + ** to include the updated change counter and then write page 1 + ** directly to the database file. Because of the atomic-write ** property of the host file-system, this is safe. */ rc = pager_incr_changecounter(pPager, 1); @@ -56015,78 +62733,91 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( } } } -#else +#else /* SQLITE_ENABLE_ATOMIC_WRITE */ #ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE - if( zMaster ){ + if( zSuper ){ rc = sqlite3JournalCreate(pPager->jfd); if( rc!=SQLITE_OK ) goto commit_phase_one_exit; + assert( bBatch==0 ); } #endif rc = pager_incr_changecounter(pPager, 0); -#endif +#endif /* !SQLITE_ENABLE_ATOMIC_WRITE */ if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - - /* Write the master journal name into the journal file. If a master - ** journal file name has already been written to the journal file, - ** or if zMaster is NULL (no master journal), then this call is a no-op. + + /* Write the super-journal name into the journal file. If a + ** super-journal file name has already been written to the journal file, + ** or if zSuper is NULL (no super-journal), then this call is a no-op. */ - rc = writeMasterJournal(pPager, zMaster); + rc = writeSuperJournal(pPager, zSuper); if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - + /* Sync the journal file and write all dirty pages to the database. - ** If the atomic-update optimization is being used, this sync will not + ** If the atomic-update optimization is being used, this sync will not ** create the journal file or perform any real IO. ** ** Because the change-counter page was just modified, unless the ** atomic-update optimization is used it is almost certain that the ** journal requires a sync here. However, in locking_mode=exclusive - ** on a system under memory pressure it is just possible that this is + ** on a system under memory pressure it is just possible that this is ** not the case. In this case it is likely enough that the redundant - ** xSync() call will be changed to a no-op by the OS anyhow. + ** xSync() call will be changed to a no-op by the OS anyhow. */ rc = syncJournal(pPager, 0); if( rc!=SQLITE_OK ) goto commit_phase_one_exit; + pList = sqlite3PcacheDirtyList(pPager->pPCache); +#ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE if( bBatch ){ - /* The pager is now in DBMOD state. But regardless of what happens - ** next, attempting to play the journal back into the database would - ** be unsafe. Close it now to make sure that does not happen. */ - sqlite3OsClose(pPager->jfd); rc = sqlite3OsFileControl(fd, SQLITE_FCNTL_BEGIN_ATOMIC_WRITE, 0); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - } - rc = pager_write_pagelist(pPager,sqlite3PcacheDirtyList(pPager->pPCache)); - if( bBatch ){ if( rc==SQLITE_OK ){ - rc = sqlite3OsFileControl(fd, SQLITE_FCNTL_COMMIT_ATOMIC_WRITE, 0); + rc = pager_write_pagelist(pPager, pList); + if( rc==SQLITE_OK ){ + rc = sqlite3OsFileControl(fd, SQLITE_FCNTL_COMMIT_ATOMIC_WRITE, 0); + } + if( rc!=SQLITE_OK ){ + sqlite3OsFileControlHint(fd, SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE, 0); + } } - if( rc!=SQLITE_OK ){ - sqlite3OsFileControlHint(fd, SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE, 0); + + if( (rc&0xFF)==SQLITE_IOERR && rc!=SQLITE_IOERR_NOMEM ){ + rc = sqlite3JournalCreate(pPager->jfd); + if( rc!=SQLITE_OK ){ + sqlite3OsClose(pPager->jfd); + goto commit_phase_one_exit; + } + bBatch = 0; + }else{ + sqlite3OsClose(pPager->jfd); } } +#endif /* SQLITE_ENABLE_BATCH_ATOMIC_WRITE */ + if( bBatch==0 ){ + rc = pager_write_pagelist(pPager, pList); + } if( rc!=SQLITE_OK ){ assert( rc!=SQLITE_IOERR_BLOCKED ); goto commit_phase_one_exit; } sqlite3PcacheCleanAll(pPager->pPCache); - /* If the file on disk is smaller than the database image, use + /* If the file on disk is smaller than the database image, use ** pager_truncate to grow the file here. This can happen if the database ** image was extended as part of the current transaction and then the ** last page in the db image moved to the free-list. In this case the ** last page is never written out to disk, leaving the database file ** undersized. Fix this now if it is the case. */ if( pPager->dbSize>pPager->dbFileSize ){ - Pgno nNew = pPager->dbSize - (pPager->dbSize==PAGER_MJ_PGNO(pPager)); + Pgno nNew = pPager->dbSize - (pPager->dbSize==PAGER_SJ_PGNO(pPager)); assert( pPager->eState==PAGER_WRITER_DBMOD ); rc = pager_truncate(pPager, nNew); if( rc!=SQLITE_OK ) goto commit_phase_one_exit; } - + /* Finally, sync the database file. */ if( !noSync ){ - rc = sqlite3PagerSync(pPager, zMaster); + rc = sqlite3PagerSync(pPager, zSuper); } IOTRACE(("DBSYNC %p\n", pPager)) } @@ -56103,12 +62834,12 @@ commit_phase_one_exit: /* ** When this function is called, the database file has been completely ** updated to reflect the changes made by the current transaction and -** synced to disk. The journal file still exists in the file-system +** synced to disk. The journal file still exists in the file-system ** though, and if a failure occurs at this point it will eventually ** be used as a hot-journal and the current transaction rolled back. ** -** This function finalizes the journal file, either by deleting, -** truncating or partially zeroing it, so that it cannot be used +** This function finalizes the journal file, either by deleting, +** truncating or partially zeroing it, so that it cannot be used ** for hot-journal rollback. Once this is done the transaction is ** irrevocably committed. ** @@ -56122,6 +62853,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){ ** But if (due to a coding error elsewhere in the system) it does get ** called, just return the same error code without doing anything. */ if( NEVER(pPager->errCode) ) return pPager->errCode; + pPager->iDataVersion++; assert( pPager->eState==PAGER_WRITER_LOCKED || pPager->eState==PAGER_WRITER_FINISHED @@ -56133,15 +62865,15 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){ ** this transaction, the pager is running in exclusive-mode and is ** using persistent journals, then this function is a no-op. ** - ** The start of the journal file currently contains a single journal + ** The start of the journal file currently contains a single journal ** header with the nRec field set to 0. If such a journal is used as ** a hot-journal during hot-journal rollback, 0 changes will be made - ** to the database file. So there is no need to zero the journal + ** to the database file. So there is no need to zero the journal ** header. Since the pager is in exclusive mode, there is no need ** to drop any locks either. */ - if( pPager->eState==PAGER_WRITER_LOCKED - && pPager->exclusiveMode + if( pPager->eState==PAGER_WRITER_LOCKED + && pPager->exclusiveMode && pPager->journalMode==PAGER_JOURNALMODE_PERSIST ){ assert( pPager->journalOff==JOURNAL_HDR_SZ(pPager) || !pPager->journalOff ); @@ -56150,13 +62882,12 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){ } PAGERTRACE(("COMMIT %d\n", PAGERID(pPager))); - pPager->iDataVersion++; - rc = pager_end_transaction(pPager, pPager->setMaster, 1); + rc = pager_end_transaction(pPager, pPager->setSuper, 1); return pager_error(pPager, rc); } /* -** If a write transaction is open, then all changes made within the +** If a write transaction is open, then all changes made within the ** transaction are reverted and the current write-transaction is closed. ** The pager falls back to PAGER_READER state if successful, or PAGER_ERROR ** state if an error occurs. @@ -56166,14 +62897,14 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){ ** ** Otherwise, in rollback mode, this function performs two functions: ** -** 1) It rolls back the journal file, restoring all database file and +** 1) It rolls back the journal file, restoring all database file and ** in-memory cache pages to the state they were in when the transaction ** was opened, and ** ** 2) It finalizes the journal file, so that it is not used for hot ** rollback at any point in the future. ** -** Finalization of the journal file (task 2) is only performed if the +** Finalization of the journal file (task 2) is only performed if the ** rollback is successful. ** ** In WAL mode, all cache-entries containing data modified within the @@ -56186,7 +62917,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){ PAGERTRACE(("ROLLBACK %d\n", PAGERID(pPager))); /* PagerRollback() is a no-op if called in READER or OPEN state. If - ** the pager is already in the ERROR state, the rollback is not + ** the pager is already in the ERROR state, the rollback is not ** attempted here. Instead, the error code is returned to the caller. */ assert( assert_pager_state(pPager) ); @@ -56196,13 +62927,13 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){ if( pagerUseWal(pPager) ){ int rc2; rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_ROLLBACK, -1); - rc2 = pager_end_transaction(pPager, pPager->setMaster, 0); + rc2 = pager_end_transaction(pPager, pPager->setSuper, 0); if( rc==SQLITE_OK ) rc = rc2; }else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){ int eState = pPager->eState; rc = pager_end_transaction(pPager, 0, 0); if( !MEMDB && eState>PAGER_WRITER_LOCKED ){ - /* This can happen using journal_mode=off. Move the pager to the error + /* This can happen using journal_mode=off. Move the pager to the error ** state to indicate that the contents of the cache may not be trusted. ** Any active readers will get SQLITE_ABORT. */ @@ -56217,7 +62948,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){ assert( pPager->eState==PAGER_READER || rc!=SQLITE_OK ); assert( rc==SQLITE_OK || rc==SQLITE_FULL || rc==SQLITE_CORRUPT - || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR + || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR || rc==SQLITE_CANTOPEN ); @@ -56249,8 +62980,8 @@ SQLITE_PRIVATE int sqlite3PagerRefcount(Pager *pPager){ ** used by the pager and its associated cache. */ SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager *pPager){ - int perPageSize = pPager->pageSize + pPager->nExtra + sizeof(PgHdr) - + 5*sizeof(void*); + int perPageSize = pPager->pageSize + pPager->nExtra + + (int)(sizeof(PgHdr) + 5*sizeof(void*)); return perPageSize*sqlite3PcachePagecount(pPager->pPCache) + sqlite3MallocSize(pPager) + pPager->pageSize; @@ -56291,8 +63022,8 @@ SQLITE_PRIVATE int *sqlite3PagerStats(Pager *pPager){ ** it was added later. ** ** Before returning, *pnVal is incremented by the -** current cache hit or miss count, according to the value of eStat. If the -** reset parameter is non-zero, the cache hit or miss count is zeroed before +** current cache hit or miss count, according to the value of eStat. If the +** reset parameter is non-zero, the cache hit or miss count is zeroed before ** returning. */ SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){ @@ -56319,7 +63050,7 @@ SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, i ** Return true if this is an in-memory or temp-file backed pager. */ SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){ - return pPager->tempFile; + return pPager->tempFile || pPager->memVfs; } /* @@ -56328,7 +63059,7 @@ SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){ ** to make up the difference. If the number of savepoints is already ** equal to nSavepoint, then this function is a no-op. ** -** If a memory allocation fails, SQLITE_NOMEM is returned. If an error +** If a memory allocation fails, SQLITE_NOMEM is returned. If an error ** occurs while opening the sub-journal file, then an IO error code is ** returned. Otherwise, SQLITE_OK. */ @@ -56343,7 +63074,7 @@ static SQLITE_NOINLINE int pagerOpenSavepoint(Pager *pPager, int nSavepoint){ assert( nSavepoint>nCurrent && pPager->useJournal ); /* Grow the Pager.aSavepoint array using realloc(). Return SQLITE_NOMEM - ** if the allocation fails. Otherwise, zero the new portion in case a + ** if the allocation fails. Otherwise, zero the new portion in case a ** malloc failure occurs while populating it in the for(...) loop below. */ aNew = (PagerSavepoint *)sqlite3Realloc( @@ -56365,6 +63096,7 @@ static SQLITE_NOINLINE int pagerOpenSavepoint(Pager *pPager, int nSavepoint){ } aNew[ii].iSubRec = pPager->nSubRec; aNew[ii].pInSavepoint = sqlite3BitvecCreate(pPager->dbSize); + aNew[ii].bTruncateOnRelease = 1; if( !aNew[ii].pInSavepoint ){ return SQLITE_NOMEM_BKPT; } @@ -56391,7 +63123,7 @@ SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ /* ** This function is called to rollback or release (commit) a savepoint. -** The savepoint to release or rollback need not be the most recently +** The savepoint to release or rollback need not be the most recently ** created savepoint. ** ** Parameter op is always either SAVEPOINT_ROLLBACK or SAVEPOINT_RELEASE. @@ -56399,29 +63131,29 @@ SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ ** index iSavepoint. If it is SAVEPOINT_ROLLBACK, then rollback all changes ** that have occurred since the specified savepoint was created. ** -** The savepoint to rollback or release is identified by parameter +** The savepoint to rollback or release is identified by parameter ** iSavepoint. A value of 0 means to operate on the outermost savepoint ** (the first created). A value of (Pager.nSavepoint-1) means operate ** on the most recently created savepoint. If iSavepoint is greater than ** (Pager.nSavepoint-1), then this function is a no-op. ** ** If a negative value is passed to this function, then the current -** transaction is rolled back. This is different to calling +** transaction is rolled back. This is different to calling ** sqlite3PagerRollback() because this function does not terminate -** the transaction or unlock the database, it just restores the -** contents of the database to its original state. +** the transaction or unlock the database, it just restores the +** contents of the database to its original state. ** -** In any case, all savepoints with an index greater than iSavepoint +** In any case, all savepoints with an index greater than iSavepoint ** are destroyed. If this is a release operation (op==SAVEPOINT_RELEASE), ** then savepoint iSavepoint is also destroyed. ** ** This function may return SQLITE_NOMEM if a memory allocation fails, -** or an IO error code if an IO error occurs while rolling back a +** or an IO error code if an IO error occurs while rolling back a ** savepoint. If no errors occur, SQLITE_OK is returned. -*/ +*/ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ int rc = pPager->errCode; - + #ifdef SQLITE_ENABLE_ZIPVFS if( op==SAVEPOINT_RELEASE ) rc = SQLITE_OK; #endif @@ -56434,7 +63166,7 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ int nNew; /* Number of remaining savepoints after this op. */ /* Figure out how many savepoints will still be active after this - ** operation. Store this value in nNew. Then free resources associated + ** operation. Store this value in nNew. Then free resources associated ** with any savepoints that are destroyed by this operation. */ nNew = iSavepoint + (( op==SAVEPOINT_RELEASE ) ? 0 : 1); @@ -56443,16 +63175,18 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ } pPager->nSavepoint = nNew; - /* If this is a release of the outermost savepoint, truncate - ** the sub-journal to zero bytes in size. */ + /* Truncate the sub-journal so that it only includes the parts + ** that are still in use. */ if( op==SAVEPOINT_RELEASE ){ - if( nNew==0 && isOpen(pPager->sjfd) ){ + PagerSavepoint *pRel = &pPager->aSavepoint[nNew]; + if( pRel->bTruncateOnRelease && isOpen(pPager->sjfd) ){ /* Only truncate if it is an in-memory sub-journal. */ if( sqlite3JournalIsInMemory(pPager->sjfd) ){ - rc = sqlite3OsTruncate(pPager->sjfd, 0); + i64 sz = (pPager->pageSize+4)*(i64)pRel->iSubRec; + rc = sqlite3OsTruncate(pPager->sjfd, sz); assert( rc==SQLITE_OK ); } - pPager->nSubRec = 0; + pPager->nSubRec = pRel->iSubRec; } } /* Else this is a rollback operation, playback the specified savepoint. @@ -56465,14 +63199,14 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ rc = pagerPlaybackSavepoint(pPager, pSavepoint); assert(rc!=SQLITE_DONE); } - + #ifdef SQLITE_ENABLE_ZIPVFS - /* If the cache has been modified but the savepoint cannot be rolled + /* If the cache has been modified but the savepoint cannot be rolled ** back journal_mode=off, put the pager in the error state. This way, ** if the VFS used by this pager includes ZipVFS, the entire transaction ** can be rolled back at the ZipVFS level. */ - else if( - pPager->journalMode==PAGER_JOURNALMODE_OFF + else if( + pPager->journalMode==PAGER_JOURNALMODE_OFF && pPager->eState>=PAGER_WRITER_CACHEMOD ){ pPager->errCode = SQLITE_ABORT; @@ -56494,9 +63228,17 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ ** behavior. But when the Btree needs to know the filename for matching to ** shared cache, it uses nullIfMemDb==0 so that in-memory databases can ** participate in shared-cache. +** +** The return value to this routine is always safe to use with +** sqlite3_uri_parameter() and sqlite3_filename_database() and friends. */ -SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager *pPager, int nullIfMemDb){ - return (nullIfMemDb && pPager->memDb) ? "" : pPager->zFilename; +SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager *pPager, int nullIfMemDb){ + static const char zFake[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; + if( nullIfMemDb && (pPager->memDb || sqlite3IsMemdb(pPager->pVfs)) ){ + return &zFake[4]; + }else{ + return pPager->zFilename; + } } /* @@ -56515,16 +63257,6 @@ SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager *pPager){ return pPager->fd; } -#ifdef SQLITE_ENABLE_SETLK_TIMEOUT -/* -** Reset the lock timeout for pager. -*/ -SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager){ - int x = 0; - sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_LOCK_TIMEOUT, &x); -} -#endif - /* ** Return the file handle for the journal file (if it exists). ** This will be either the rollback journal or the WAL file. @@ -56544,50 +63276,6 @@ SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager *pPager){ return pPager->zJournal; } -#ifdef SQLITE_HAS_CODEC -/* -** Set or retrieve the codec for this pager -*/ -SQLITE_PRIVATE void sqlite3PagerSetCodec( - Pager *pPager, - void *(*xCodec)(void*,void*,Pgno,int), - void (*xCodecSizeChng)(void*,int,int), - void (*xCodecFree)(void*), - void *pCodec -){ - if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec); - pPager->xCodec = pPager->memDb ? 0 : xCodec; - pPager->xCodecSizeChng = xCodecSizeChng; - pPager->xCodecFree = xCodecFree; - pPager->pCodec = pCodec; - setGetterMethod(pPager); - pagerReportSize(pPager); -} -SQLITE_PRIVATE void *sqlite3PagerGetCodec(Pager *pPager){ - return pPager->pCodec; -} - -/* -** This function is called by the wal module when writing page content -** into the log file. -** -** This function returns a pointer to a buffer containing the encrypted -** page content. If a malloc fails, this function may return NULL. -*/ -SQLITE_PRIVATE void *sqlite3PagerCodec(PgHdr *pPg){ - void *aData = 0; - CODEC2(pPg->pPager, pPg->pData, pPg->pgno, 6, return 0, aData); - return aData; -} - -/* -** Return the current pager state -*/ -SQLITE_PRIVATE int sqlite3PagerState(Pager *pPager){ - return pPager->eState; -} -#endif /* SQLITE_HAS_CODEC */ - #ifndef SQLITE_OMIT_AUTOVACUUM /* ** Move the page pPg to location pgno in the file. @@ -56607,8 +63295,8 @@ SQLITE_PRIVATE int sqlite3PagerState(Pager *pPager){ ** transaction is active). ** ** If the fourth argument, isCommit, is non-zero, then this page is being -** moved as part of a database reorganization just before the transaction -** is being committed. In this case, it is guaranteed that the database page +** moved as part of a database reorganization just before the transaction +** is being committed. In this case, it is guaranteed that the database page ** pPg refers to will not be written to again within this transaction. ** ** This function may return SQLITE_NOMEM or an IO error code if an error @@ -56636,7 +63324,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i } /* If the page being moved is dirty and has not been saved by the latest - ** savepoint, then save the current contents of the page into the + ** savepoint, then save the current contents of the page into the ** sub-journal now. This is required to handle the following scenario: ** ** BEGIN; @@ -56659,7 +63347,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i return rc; } - PAGERTRACE(("MOVE %d page %d (needSync=%d) moves to %d\n", + PAGERTRACE(("MOVE %d page %d (needSync=%d) moves to %d\n", PAGERID(pPager), pPg->pgno, (pPg->flags&PGHDR_NEED_SYNC)?1:0, pgno)); IOTRACE(("MOVE %p %d %d\n", pPager, pPg->pgno, pgno)) @@ -56667,7 +63355,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i ** be written to, store pPg->pgno in local variable needSyncPgno. ** ** If the isCommit flag is set, there is no need to remember that - ** the journal needs to be sync()ed before database page pPg->pgno + ** the journal needs to be sync()ed before database page pPg->pgno ** can be written to. The caller has already promised not to write to it. */ if( (pPg->flags&PGHDR_NEED_SYNC) && !isCommit ){ @@ -56678,14 +63366,18 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i } /* If the cache contains a page with page-number pgno, remove it - ** from its hash chain. Also, if the PGHDR_NEED_SYNC flag was set for - ** page pgno before the 'move' operation, it needs to be retained + ** from its hash chain. Also, if the PGHDR_NEED_SYNC flag was set for + ** page pgno before the 'move' operation, it needs to be retained ** for the page moved there. */ pPg->flags &= ~PGHDR_NEED_SYNC; pPgOld = sqlite3PagerLookup(pPager, pgno); - assert( !pPgOld || pPgOld->nRef==1 ); + assert( !pPgOld || pPgOld->nRef==1 || CORRUPT_DB ); if( pPgOld ){ + if( NEVER(pPgOld->nRef>1) ){ + sqlite3PagerUnrefNotNull(pPgOld); + return SQLITE_CORRUPT_BKPT; + } pPg->flags |= (pPgOld->flags&PGHDR_NEED_SYNC); if( pPager->tempFile ){ /* Do not discard pages from an in-memory database since we might @@ -56710,9 +63402,9 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i } if( needSyncPgno ){ - /* If needSyncPgno is non-zero, then the journal file needs to be + /* If needSyncPgno is non-zero, then the journal file needs to be ** sync()ed before any data is written to database file page needSyncPgno. - ** Currently, no such page exists in the page-cache and the + ** Currently, no such page exists in the page-cache and the ** "is journaled" bitvec flag has been set. This needs to be remedied by ** loading the page into the pager-cache and setting the PGHDR_NEED_SYNC ** flag. @@ -56743,9 +63435,9 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i #endif /* -** The page handle passed as the first argument refers to a dirty page -** with a page number other than iNew. This function changes the page's -** page number to iNew and sets the value of the PgHdr.flags field to +** The page handle passed as the first argument refers to a dirty page +** with a page number other than iNew. This function changes the page's +** page number to iNew and sets the value of the PgHdr.flags field to ** the value passed as the third parameter. */ SQLITE_PRIVATE void sqlite3PagerRekey(DbPage *pPg, Pgno iNew, u16 flags){ @@ -56763,7 +63455,7 @@ SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *pPg){ } /* -** Return a pointer to the Pager.nExtra bytes of "extra" space +** Return a pointer to the Pager.nExtra bytes of "extra" space ** allocated along with the specified page. */ SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *pPg){ @@ -56772,7 +63464,7 @@ SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *pPg){ /* ** Get/set the locking-mode for this pager. Parameter eMode must be one -** of PAGER_LOCKINGMODE_QUERY, PAGER_LOCKINGMODE_NORMAL or +** of PAGER_LOCKINGMODE_QUERY, PAGER_LOCKINGMODE_NORMAL or ** PAGER_LOCKINGMODE_EXCLUSIVE. If the parameter is not _QUERY, then ** the locking-mode is set to the value specified. ** @@ -56816,20 +63508,13 @@ SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *pPager, int eMode){ SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){ u8 eOld = pPager->journalMode; /* Prior journalmode */ -#ifdef SQLITE_DEBUG - /* The print_pager_state() routine is intended to be used by the debugger - ** only. We invoke it once here to suppress a compiler warning. */ - print_pager_state(pPager); -#endif - - /* The eMode parameter is always valid */ - assert( eMode==PAGER_JOURNALMODE_DELETE - || eMode==PAGER_JOURNALMODE_TRUNCATE - || eMode==PAGER_JOURNALMODE_PERSIST - || eMode==PAGER_JOURNALMODE_OFF - || eMode==PAGER_JOURNALMODE_WAL - || eMode==PAGER_JOURNALMODE_MEMORY ); + assert( eMode==PAGER_JOURNALMODE_DELETE /* 0 */ + || eMode==PAGER_JOURNALMODE_PERSIST /* 1 */ + || eMode==PAGER_JOURNALMODE_OFF /* 2 */ + || eMode==PAGER_JOURNALMODE_TRUNCATE /* 3 */ + || eMode==PAGER_JOURNALMODE_MEMORY /* 4 */ + || eMode==PAGER_JOURNALMODE_WAL /* 5 */ ); /* This routine is only called from the OP_JournalMode opcode, and ** the logic there will never allow a temporary file to be changed @@ -56853,7 +63538,7 @@ SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){ assert( pPager->eState!=PAGER_ERROR ); pPager->journalMode = (u8)eMode; - /* When transistioning from TRUNCATE or PERSIST to any other journal + /* When transitioning from TRUNCATE or PERSIST to any other journal ** mode except WAL, unless the pager is in locking_mode=exclusive mode, ** delete the journal file. */ @@ -56866,7 +63551,6 @@ SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){ assert( isOpen(pPager->fd) || pPager->exclusiveMode ); if( !pPager->exclusiveMode && (eOld & 5)==1 && (eMode & 1)==0 ){ - /* In this case we would like to delete the journal file. If it is ** not possible, then that is not a problem. Deleting the journal file ** here is an optimization only. @@ -56978,6 +63662,18 @@ SQLITE_PRIVATE int sqlite3PagerCheckpoint( int *pnCkpt /* OUT: Final number of checkpointed frames */ ){ int rc = SQLITE_OK; + if( pPager->pWal==0 && pPager->journalMode==PAGER_JOURNALMODE_WAL ){ + /* This only happens when a database file is zero bytes in size opened and + ** then "PRAGMA journal_mode=WAL" is run and then sqlite3_wal_checkpoint() + ** is invoked without any intervening transactions. We need to start + ** a transaction to initialize pWal. The PRAGMA table_list statement is + ** used for this since it starts transactions on every database file, + ** including all ATTACHed databases. This seems expensive for a single + ** sqlite3_wal_checkpoint() call, but it happens very rarely. + ** https://sqlite.org/forum/forumpost/fd0f19d229156939 + */ + sqlite3_exec(db, "PRAGMA table_list",0,0,0); + } if( pPager->pWal ){ rc = sqlite3WalCheckpoint(pPager->pWal, db, eMode, (eMode==SQLITE_CHECKPOINT_PASSIVE ? 0 : pPager->xBusyHandler), @@ -56985,7 +63681,6 @@ SQLITE_PRIVATE int sqlite3PagerCheckpoint( pPager->walSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace, pnLog, pnCkpt ); - sqlite3PagerResetLockTimeout(pPager); } return rc; } @@ -57010,20 +63705,22 @@ SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager){ */ static int pagerExclusiveLock(Pager *pPager){ int rc; /* Return code */ + u8 eOrigLock; /* Original lock */ - assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK ); + assert( pPager->eLock>=SHARED_LOCK ); + eOrigLock = pPager->eLock; rc = pagerLockDb(pPager, EXCLUSIVE_LOCK); if( rc!=SQLITE_OK ){ - /* If the attempt to grab the exclusive lock failed, release the + /* If the attempt to grab the exclusive lock failed, release the ** pending lock that may have been obtained instead. */ - pagerUnlockDb(pPager, SHARED_LOCK); + pagerUnlockDb(pPager, eOrigLock); } return rc; } /* -** Call sqlite3WalOpen() to open the WAL handle. If the pager is in +** Call sqlite3WalOpen() to open the WAL handle. If the pager is in ** exclusive-locking mode when this function is called, take an EXCLUSIVE ** lock on the database file and use heap-memory to store the wal-index ** in. Otherwise, use the normal shared-memory. @@ -57034,8 +63731,8 @@ static int pagerOpenWal(Pager *pPager){ assert( pPager->pWal==0 && pPager->tempFile==0 ); assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK ); - /* If the pager is already in exclusive-mode, the WAL module will use - ** heap-memory for the wal-index instead of the VFS shared-memory + /* If the pager is already in exclusive-mode, the WAL module will use + ** heap-memory for the wal-index instead of the VFS shared-memory ** implementation. Take the exclusive lock now, before opening the WAL ** file, to make sure this is safe. */ @@ -57043,7 +63740,7 @@ static int pagerOpenWal(Pager *pPager){ rc = pagerExclusiveLock(pPager); } - /* Open the connection to the log file. If this operation fails, + /* Open the connection to the log file. If this operation fails, ** (e.g. due to malloc() failure), return an error code. */ if( rc==SQLITE_OK ){ @@ -57065,7 +63762,7 @@ static int pagerOpenWal(Pager *pPager){ ** If the pager passed as the first argument is open on a real database ** file (not a temp file or an in-memory database), and the WAL file ** is not already open, make an attempt to open it now. If successful, -** return SQLITE_OK. If an error occurs or the VFS used by the pager does +** return SQLITE_OK. If an error occurs or the VFS used by the pager does ** not support the xShmXXX() methods, return an error code. *pbOpen is ** not modified in either case. ** @@ -57107,7 +63804,7 @@ SQLITE_PRIVATE int sqlite3PagerOpenWal( ** This function is called to close the connection to the log file prior ** to switching from WAL to rollback mode. ** -** Before closing the log file, this function attempts to take an +** Before closing the log file, this function attempts to take an ** EXCLUSIVE lock on the database file. If this cannot be obtained, an ** error (SQLITE_BUSY) is returned and the log connection is not closed. ** If successful, the EXCLUSIVE lock is not released before returning. @@ -57133,7 +63830,7 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){ rc = pagerOpenWal(pPager); } } - + /* Checkpoint and close the log. Because an EXCLUSIVE lock is held on ** the database file, the log and log-summary files will be deleted. */ @@ -57150,6 +63847,32 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){ return rc; } +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT +/* +** If pager pPager is a wal-mode database not in exclusive locking mode, +** invoke the sqlite3WalWriteLock() function on the associated Wal object +** with the same db and bLock parameters as were passed to this function. +** Return an SQLite error code if an error occurs, or SQLITE_OK otherwise. +*/ +SQLITE_PRIVATE int sqlite3PagerWalWriteLock(Pager *pPager, int bLock){ + int rc = SQLITE_OK; + if( pagerUseWal(pPager) && pPager->exclusiveMode==0 ){ + rc = sqlite3WalWriteLock(pPager->pWal, bLock); + } + return rc; +} + +/* +** Set the database handle used by the wal layer to determine if +** blocking locks are required. +*/ +SQLITE_PRIVATE void sqlite3PagerWalDb(Pager *pPager, sqlite3 *db){ + if( pagerUseWal(pPager) ){ + sqlite3WalDb(pPager->pWal, db); + } +} +#endif + #ifdef SQLITE_ENABLE_SNAPSHOT /* ** If this is a WAL database, obtain a snapshot handle for the snapshot @@ -57165,10 +63888,13 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppS /* ** If this is a WAL database, store a pointer to pSnapshot. Next time a -** read transaction is opened, attempt to read from the snapshot it +** read transaction is opened, attempt to read from the snapshot it ** identifies. If this is not a WAL database, return an error. */ -SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot){ +SQLITE_PRIVATE int sqlite3PagerSnapshotOpen( + Pager *pPager, + sqlite3_snapshot *pSnapshot +){ int rc = SQLITE_OK; if( pPager->pWal ){ sqlite3WalSnapshotOpen(pPager->pWal, pSnapshot); @@ -57179,7 +63905,7 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSn } /* -** If this is a WAL database, call sqlite3WalSnapshotRecover(). If this +** If this is a WAL database, call sqlite3WalSnapshotRecover(). If this ** is not a WAL database, return an error. */ SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager){ @@ -57191,6 +63917,38 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager){ } return rc; } + +/* +** The caller currently has a read transaction open on the database. +** If this is not a WAL database, SQLITE_ERROR is returned. Otherwise, +** this function takes a SHARED lock on the CHECKPOINTER slot and then +** checks if the snapshot passed as the second argument is still +** available. If so, SQLITE_OK is returned. +** +** If the snapshot is not available, SQLITE_ERROR is returned. Or, if +** the CHECKPOINTER lock cannot be obtained, SQLITE_BUSY. If any error +** occurs (any value other than SQLITE_OK is returned), the CHECKPOINTER +** lock is released before returning. +*/ +SQLITE_PRIVATE int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot){ + int rc; + if( pPager->pWal ){ + rc = sqlite3WalSnapshotCheck(pPager->pWal, pSnapshot); + }else{ + rc = SQLITE_ERROR; + } + return rc; +} + +/* +** Release a lock obtained by an earlier successful call to +** sqlite3PagerSnapshotCheck(). +*/ +SQLITE_PRIVATE void sqlite3PagerSnapshotUnlock(Pager *pPager){ + assert( pPager->pWal ); + sqlite3WalSnapshotUnlock(pPager->pWal); +} + #endif /* SQLITE_ENABLE_SNAPSHOT */ #endif /* !SQLITE_OMIT_WAL */ @@ -57208,6 +63966,12 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ } #endif +#ifdef SQLITE_USE_SEH +SQLITE_PRIVATE int sqlite3PagerWalSystemErrno(Pager *pPager){ + return sqlite3WalSystemErrno(pPager->pWal); +} +#endif + #endif /* SQLITE_OMIT_DISKIO */ /************** End of pager.c ***********************************************/ @@ -57224,7 +63988,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** ************************************************************************* ** -** This file contains the implementation of a write-ahead log (WAL) used in +** This file contains the implementation of a write-ahead log (WAL) used in ** "journal_mode=WAL" mode. ** ** WRITE-AHEAD LOG (WAL) FILE FORMAT @@ -57233,7 +63997,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** Each frame records the revised content of a single page from the ** database file. All changes to the database are recorded by writing ** frames into the WAL. Transactions commit when a frame is written that -** contains a commit marker. A single WAL can and usually does record +** contains a commit marker. A single WAL can and usually does record ** multiple transactions. Periodically, the content of the WAL is ** transferred back into the database file in an operation called a ** "checkpoint". @@ -57259,11 +64023,11 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** ** Immediately following the wal-header are zero or more frames. Each ** frame consists of a 24-byte frame-header followed by a bytes -** of page data. The frame-header is six big-endian 32-bit unsigned +** of page data. The frame-header is six big-endian 32-bit unsigned ** integer values, as follows: ** ** 0: Page number. -** 4: For commit records, the size of the database image in pages +** 4: For commit records, the size of the database image in pages ** after the commit. For all other records, zero. ** 8: Salt-1 (copied from the header) ** 12: Salt-2 (copied from the header) @@ -57289,7 +64053,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** the checksum. The checksum is computed by interpreting the input as ** an even number of unsigned 32-bit integers: x[0] through x[N]. The ** algorithm used for the checksum is as follows: -** +** ** for i from 0 to n-1 step 2: ** s0 += x[i] + s1; ** s1 += x[i+1] + s0; @@ -57297,7 +64061,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** ** Note that s0 and s1 are both weighted checksums using fibonacci weights ** in reverse order (the largest fibonacci weight occurs on the first element -** of the sequence being summed.) The s1 value spans all 32-bit +** of the sequence being summed.) The s1 value spans all 32-bit ** terms of the sequence whereas s0 omits the final term. ** ** On a checkpoint, the WAL is first VFS.xSync-ed, then valid content of the @@ -57330,19 +64094,19 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** multiple concurrent readers to view different versions of the database ** content simultaneously. ** -** The reader algorithm in the previous paragraphs works correctly, but +** The reader algorithm in the previous paragraphs works correctly, but ** because frames for page P can appear anywhere within the WAL, the ** reader has to scan the entire WAL looking for page P frames. If the ** WAL is large (multiple megabytes is typical) that scan can be slow, ** and read performance suffers. To overcome this problem, a separate ** data structure called the wal-index is maintained to expedite the ** search for frames of a particular page. -** +** ** WAL-INDEX FORMAT ** ** Conceptually, the wal-index is shared memory, though VFS implementations ** might choose to implement the wal-index using a mmapped file. Because -** the wal-index is shared memory, SQLite does not support journal_mode=WAL +** the wal-index is shared memory, SQLite does not support journal_mode=WAL ** on a network filesystem. All users of the database must be able to ** share memory. ** @@ -57360,28 +64124,31 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** byte order of the host computer. ** ** The purpose of the wal-index is to answer this question quickly: Given -** a page number P and a maximum frame index M, return the index of the +** a page number P and a maximum frame index M, return the index of the ** last frame in the wal before frame M for page P in the WAL, or return ** NULL if there are no frames for page P in the WAL prior to M. ** ** The wal-index consists of a header region, followed by an one or -** more index blocks. +** more index blocks. ** ** The wal-index header contains the total number of frames within the WAL ** in the mxFrame field. ** -** Each index block except for the first contains information on +** Each index block except for the first contains information on ** HASHTABLE_NPAGE frames. The first index block contains information on -** HASHTABLE_NPAGE_ONE frames. The values of HASHTABLE_NPAGE_ONE and +** HASHTABLE_NPAGE_ONE frames. The values of HASHTABLE_NPAGE_ONE and ** HASHTABLE_NPAGE are selected so that together the wal-index header and ** first index block are the same size as all other index blocks in the -** wal-index. +** wal-index. The values are: +** +** HASHTABLE_NPAGE 4096 +** HASHTABLE_NPAGE_ONE 4062 ** ** Each index block contains two sections, a page-mapping that contains the -** database page number associated with each wal frame, and a hash-table +** database page number associated with each wal frame, and a hash-table ** that allows readers to query an index block for a specific page number. ** The page-mapping is an array of HASHTABLE_NPAGE (or HASHTABLE_NPAGE_ONE -** for the first index block) 32-bit page numbers. The first entry in the +** for the first index block) 32-bit page numbers. The first entry in the ** first index-block contains the database page number corresponding to the ** first frame in the WAL file. The first entry in the second index block ** in the WAL file corresponds to the (HASHTABLE_NPAGE_ONE+1)th frame in @@ -57402,8 +64169,8 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** ** The hash table consists of HASHTABLE_NSLOT 16-bit unsigned integers. ** HASHTABLE_NSLOT = 2*HASHTABLE_NPAGE, and there is one entry in the -** hash table for each page number in the mapping section, so the hash -** table is never more than half full. The expected number of collisions +** hash table for each page number in the mapping section, so the hash +** table is never more than half full. The expected number of collisions ** prior to finding a match is 1. Each entry of the hash table is an ** 1-based index of an entry in the mapping section of the same ** index block. Let K be the 1-based index of the largest entry in @@ -57422,12 +64189,12 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** reached) until an unused hash slot is found. Let the first unused slot ** be at index iUnused. (iUnused might be less than iKey if there was ** wrap-around.) Because the hash table is never more than half full, -** the search is guaranteed to eventually hit an unused entry. Let +** the search is guaranteed to eventually hit an unused entry. Let ** iMax be the value between iKey and iUnused, closest to iUnused, ** where aHash[iMax]==P. If there is no iMax entry (if there exists ** no hash slot such that aHash[i]==p) then page P is not in the ** current index block. Otherwise the iMax-th mapping entry of the -** current index block corresponds to the last entry that references +** current index block corresponds to the last entry that references ** page P. ** ** A hash search begins with the last index block and moves toward the @@ -57452,7 +64219,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ ** if no values greater than K0 had ever been inserted into the hash table ** in the first place - which is what reader one wants. Meanwhile, the ** second reader using K1 will see additional values that were inserted -** later, which is exactly what reader two wants. +** later, which is exactly what reader two wants. ** ** When a rollback occurs, the value of K is decreased. Hash table entries ** that correspond to frames greater than the new K value are removed @@ -57480,7 +64247,7 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0; ** values in the wal-header are correct and (b) the version field is not ** WAL_MAX_VERSION, recovery fails and SQLite returns SQLITE_CANTOPEN. ** -** Similarly, if a client successfully reads a wal-index header (i.e. the +** Similarly, if a client successfully reads a wal-index header (i.e. the ** checksum test is successful) and finds that the version field is not ** WALINDEX_MAX_VERSION, then no read-transaction is opened and SQLite ** returns SQLITE_CANTOPEN. @@ -57495,7 +64262,7 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0; ** ** Technically, the various VFSes are free to implement these locks however ** they see fit. However, compatibility is encouraged so that VFSes can -** interoperate. The standard implemention used on both unix and windows +** interoperate. The standard implementation used on both unix and windows ** is for the index number to indicate a byte offset into the ** WalCkptInfo.aLock[] array in the wal-index header. In other words, all ** locks are on the shm file. The WALINDEX_LOCK_OFFSET constant (which @@ -57527,7 +64294,7 @@ typedef struct WalCkptInfo WalCkptInfo; ** ** The szPage value can be any power of 2 between 512 and 32768, inclusive. ** Or it can be 1 to represent a 65536-byte page. The latter case was -** added in 3.7.1 when support for 64K pages was added. +** added in 3.7.1 when support for 64K pages was added. */ struct WalIndexHdr { u32 iVersion; /* Wal-index version */ @@ -57569,9 +64336,9 @@ struct WalIndexHdr { ** There is one entry in aReadMark[] for each reader lock. If a reader ** holds read-lock K, then the value in aReadMark[K] is no greater than ** the mxFrame for that reader. The value READMARK_NOT_USED (0xffffffff) -** for any aReadMark[] means that entry is unused. aReadMark[0] is +** for any aReadMark[] means that entry is unused. aReadMark[0] is ** a special case; its value is never used and it exists as a place-holder -** to avoid having to offset aReadMark[] indexs by one. Readers holding +** to avoid having to offset aReadMark[] indexes by one. Readers holding ** WAL_READ_LOCK(0) always ignore the entire WAL and read all content ** directly from the database. ** @@ -57589,7 +64356,7 @@ struct WalIndexHdr { ** previous sentence is when nBackfill equals mxFrame (meaning that everything ** in the WAL has been backfilled into the database) then new readers ** will choose aReadMark[0] which has value 0 and hence such reader will -** get all their all content directly from the database file and ignore +** get all their all content directly from the database file and ignore ** the WAL. ** ** Writers normally append new frames to the end of the WAL. However, @@ -57611,6 +64378,70 @@ struct WalCkptInfo { }; #define READMARK_NOT_USED 0xffffffff +/* +** This is a schematic view of the complete 136-byte header of the +** wal-index file (also known as the -shm file): +** +** +-----------------------------+ +** 0: | iVersion | \ +** +-----------------------------+ | +** 4: | (unused padding) | | +** +-----------------------------+ | +** 8: | iChange | | +** +-------+-------+-------------+ | +** 12: | bInit | bBig | szPage | | +** +-------+-------+-------------+ | +** 16: | mxFrame | | First copy of the +** +-----------------------------+ | WalIndexHdr object +** 20: | nPage | | +** +-----------------------------+ | +** 24: | aFrameCksum | | +** | | | +** +-----------------------------+ | +** 32: | aSalt | | +** | | | +** +-----------------------------+ | +** 40: | aCksum | | +** | | / +** +-----------------------------+ +** 48: | iVersion | \ +** +-----------------------------+ | +** 52: | (unused padding) | | +** +-----------------------------+ | +** 56: | iChange | | +** +-------+-------+-------------+ | +** 60: | bInit | bBig | szPage | | +** +-------+-------+-------------+ | Second copy of the +** 64: | mxFrame | | WalIndexHdr +** +-----------------------------+ | +** 68: | nPage | | +** +-----------------------------+ | +** 72: | aFrameCksum | | +** | | | +** +-----------------------------+ | +** 80: | aSalt | | +** | | | +** +-----------------------------+ | +** 88: | aCksum | | +** | | / +** +-----------------------------+ +** 96: | nBackfill | +** +-----------------------------+ +** 100: | 5 read marks | +** | | +** | | +** | | +** | | +** +-------+-------+------+------+ +** 120: | Write | Ckpt | Rcvr | Rd0 | \ +** +-------+-------+------+------+ ) 8 lock bytes +** | Read1 | Read2 | Rd3 | Rd4 | / +** +-------+-------+------+------+ +** 128: | nBackfillAttempted | +** +-----------------------------+ +** 132: | (unused padding) | +** +-----------------------------+ +*/ /* A block of WALINDEX_LOCK_RESERVED bytes beginning at ** WALINDEX_LOCK_OFFSET is reserved for locks. Since some systems @@ -57631,14 +64462,14 @@ struct WalCkptInfo { ** big-endian format in the first 4 bytes of a WAL file. ** ** If the LSB is set, then the checksums for each frame within the WAL -** file are calculated by treating all data as an array of 32-bit -** big-endian words. Otherwise, they are calculated by interpreting +** file are calculated by treating all data as an array of 32-bit +** big-endian words. Otherwise, they are calculated by interpreting ** all data as 32-bit little-endian words. */ #define WAL_MAGIC 0x377f0682 /* -** Return the offset of frame iFrame in the write-ahead log file, +** Return the offset of frame iFrame in the write-ahead log file, ** assuming a database page size of szPage bytes. The offset returned ** is to the start of the write-ahead log frame-header. */ @@ -57675,19 +64506,30 @@ struct Wal { u32 iReCksum; /* On commit, recalculate checksums from here */ const char *zWalName; /* Name of WAL file */ u32 nCkpt; /* Checkpoint sequence counter in the wal-header */ +#ifdef SQLITE_USE_SEH + u32 lockMask; /* Mask of locks held */ + void *pFree; /* Pointer to sqlite3_free() if exception thrown */ + u32 *pWiValue; /* Value to write into apWiData[iWiPg] */ + int iWiPg; /* Write pWiValue into apWiData[iWiPg] */ + int iSysErrno; /* System error code following exception */ +#endif #ifdef SQLITE_DEBUG + int nSehTry; /* Number of nested SEH_TRY{} blocks */ u8 lockError; /* True if a locking error has occurred */ #endif #ifdef SQLITE_ENABLE_SNAPSHOT WalIndexHdr *pSnapshot; /* Start transaction here if not NULL */ #endif +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + sqlite3 *db; +#endif }; /* ** Candidate values for Wal.exclusiveMode. */ #define WAL_NORMAL_MODE 0 -#define WAL_EXCLUSIVE_MODE 1 +#define WAL_EXCLUSIVE_MODE 1 #define WAL_HEAPMEMORY_MODE 2 /* @@ -57706,7 +64548,7 @@ typedef u16 ht_slot; /* ** This structure is used to implement an iterator that loops through ** all frames in the WAL in database page order. Where two or more frames -** correspond to the same database page, the iterator visits only the +** correspond to the same database page, the iterator visits only the ** frame most recently written to the WAL (in other words, the frame with ** the largest index). ** @@ -57719,7 +64561,7 @@ typedef u16 ht_slot; ** This functionality is used by the checkpoint code (see walCheckpoint()). */ struct WalIterator { - int iPrior; /* Last result returned from the iterator */ + u32 iPrior; /* Last result returned from the iterator */ int nSegment; /* Number of entries in aSegment[] */ struct WalSegment { int iNext; /* Next slot in aIndex[] not yet returned */ @@ -57742,7 +64584,7 @@ struct WalIterator { #define HASHTABLE_HASH_1 383 /* Should be prime */ #define HASHTABLE_NSLOT (HASHTABLE_NPAGE*2) /* Must be a power of 2 */ -/* +/* ** The block of page numbers associated with the first hash-table in a ** wal-index is smaller than usual. This is so that there is a complete ** hash-table on each aligned 32KB page of the wal-index. @@ -57754,6 +64596,113 @@ struct WalIterator { sizeof(ht_slot)*HASHTABLE_NSLOT + HASHTABLE_NPAGE*sizeof(u32) \ ) +/* +** Structured Exception Handling (SEH) is a Windows-specific technique +** for catching exceptions raised while accessing memory-mapped files. +** +** The -DSQLITE_USE_SEH compile-time option means to use SEH to catch and +** deal with system-level errors that arise during WAL -shm file processing. +** Without this compile-time option, any system-level faults that appear +** while accessing the memory-mapped -shm file will cause a process-wide +** signal to be deliver, which will more than likely cause the entire +** process to exit. +*/ +#ifdef SQLITE_USE_SEH +#include + +/* Beginning of a block of code in which an exception might occur */ +# define SEH_TRY __try { \ + assert( walAssertLockmask(pWal) && pWal->nSehTry==0 ); \ + VVA_ONLY(pWal->nSehTry++); + +/* The end of a block of code in which an exception might occur */ +# define SEH_EXCEPT(X) \ + VVA_ONLY(pWal->nSehTry--); \ + assert( pWal->nSehTry==0 ); \ + } __except( sehExceptionFilter(pWal, GetExceptionCode(), GetExceptionInformation() ) ){ X } + +/* Simulate a memory-mapping fault in the -shm file for testing purposes */ +# define SEH_INJECT_FAULT sehInjectFault(pWal) + +/* +** The second argument is the return value of GetExceptionCode() for the +** current exception. Return EXCEPTION_EXECUTE_HANDLER if the exception code +** indicates that the exception may have been caused by accessing the *-shm +** file mapping. Or EXCEPTION_CONTINUE_SEARCH otherwise. +*/ +static int sehExceptionFilter(Wal *pWal, int eCode, EXCEPTION_POINTERS *p){ + VVA_ONLY(pWal->nSehTry--); + if( eCode==EXCEPTION_IN_PAGE_ERROR ){ + if( p && p->ExceptionRecord && p->ExceptionRecord->NumberParameters>=3 ){ + /* From MSDN: For this type of exception, the first element of the + ** ExceptionInformation[] array is a read-write flag - 0 if the exception + ** was thrown while reading, 1 if while writing. The second element is + ** the virtual address being accessed. The "third array element specifies + ** the underlying NTSTATUS code that resulted in the exception". */ + pWal->iSysErrno = (int)p->ExceptionRecord->ExceptionInformation[2]; + } + return EXCEPTION_EXECUTE_HANDLER; + } + return EXCEPTION_CONTINUE_SEARCH; +} + +/* +** If one is configured, invoke the xTestCallback callback with 650 as +** the argument. If it returns true, throw the same exception that is +** thrown by the system if the *-shm file mapping is accessed after it +** has been invalidated. +*/ +static void sehInjectFault(Wal *pWal){ + int res; + assert( pWal->nSehTry>0 ); + + res = sqlite3FaultSim(650); + if( res!=0 ){ + ULONG_PTR aArg[3]; + aArg[0] = 0; + aArg[1] = 0; + aArg[2] = (ULONG_PTR)res; + RaiseException(EXCEPTION_IN_PAGE_ERROR, 0, 3, (const ULONG_PTR*)aArg); + } +} + +/* +** There are two ways to use this macro. To set a pointer to be freed +** if an exception is thrown: +** +** SEH_FREE_ON_ERROR(0, pPtr); +** +** and to cancel the same: +** +** SEH_FREE_ON_ERROR(pPtr, 0); +** +** In the first case, there must not already be a pointer registered to +** be freed. In the second case, pPtr must be the registered pointer. +*/ +#define SEH_FREE_ON_ERROR(X,Y) \ + assert( (X==0 || Y==0) && pWal->pFree==X ); pWal->pFree = Y + +/* +** There are two ways to use this macro. To arrange for pWal->apWiData[iPg] +** to be set to pValue if an exception is thrown: +** +** SEH_SET_ON_ERROR(iPg, pValue); +** +** and to cancel the same: +** +** SEH_SET_ON_ERROR(0, 0); +*/ +#define SEH_SET_ON_ERROR(X,Y) pWal->iWiPg = X; pWal->pWiValue = Y + +#else +# define SEH_TRY VVA_ONLY(pWal->nSehTry++); +# define SEH_EXCEPT(X) VVA_ONLY(pWal->nSehTry--); assert( pWal->nSehTry==0 ); +# define SEH_INJECT_FAULT assert( pWal->nSehTry>0 ); +# define SEH_FREE_ON_ERROR(X,Y) +# define SEH_SET_ON_ERROR(X,Y) +#endif /* ifdef SQLITE_USE_SEH */ + + /* ** Obtain a pointer to the iPage'th page of the wal-index. The wal-index ** is broken into pages of WALINDEX_PGSZ bytes. Wal-index pages are @@ -57764,9 +64713,13 @@ struct WalIterator { ** so. It is safe to enlarge the wal-index if pWal->writeLock is true ** or pWal->exclusiveMode==WAL_HEAPMEMORY_MODE. ** -** If this call is successful, *ppPage is set to point to the wal-index -** page and SQLITE_OK is returned. If an error (an OOM or VFS error) occurs, -** then an SQLite error code is returned and *ppPage is set to 0. +** Three possible result scenarios: +** +** (1) rc==SQLITE_OK and *ppPage==Requested-Wal-Index-Page +** (2) rc>=SQLITE_ERROR and *ppPage==NULL +** (3) rc==SQLITE_OK and *ppPage==NULL // only if iPage==0 +** +** Scenario (3) can only occur when pWal->writeLock is false and iPage==0 */ static SQLITE_NOINLINE int walIndexPageRealloc( Wal *pWal, /* The WAL context */ @@ -57777,9 +64730,9 @@ static SQLITE_NOINLINE int walIndexPageRealloc( /* Enlarge the pWal->apWiData[] array if required */ if( pWal->nWiData<=iPage ){ - int nByte = sizeof(u32*)*(iPage+1); + sqlite3_int64 nByte = sizeof(u32*)*(iPage+1); volatile u32 **apNew; - apNew = (volatile u32 **)sqlite3_realloc64((void *)pWal->apWiData, nByte); + apNew = (volatile u32 **)sqlite3Realloc((void *)pWal->apWiData, nByte); if( !apNew ){ *ppPage = 0; return SQLITE_NOMEM_BKPT; @@ -57796,12 +64749,16 @@ static SQLITE_NOINLINE int walIndexPageRealloc( pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ); if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT; }else{ - rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ, + rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ, pWal->writeLock, (void volatile **)&pWal->apWiData[iPage] ); - assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 ); + assert( pWal->apWiData[iPage]!=0 + || rc!=SQLITE_OK + || (pWal->writeLock==0 && iPage==0) ); testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK ); - if( (rc&0xff)==SQLITE_READONLY ){ + if( rc==SQLITE_OK ){ + if( iPage>0 && sqlite3FaultSim(600) ) rc = SQLITE_NOMEM; + }else if( (rc&0xff)==SQLITE_READONLY ){ pWal->readOnly |= WAL_SHM_RDONLY; if( rc==SQLITE_READONLY ){ rc = SQLITE_OK; @@ -57818,6 +64775,7 @@ static int walIndexPage( int iPage, /* The page we seek */ volatile u32 **ppPage /* Write the page pointer here */ ){ + SEH_INJECT_FAULT; if( pWal->nWiData<=iPage || (*ppPage = pWal->apWiData[iPage])==0 ){ return walIndexPageRealloc(pWal, iPage, ppPage); } @@ -57829,6 +64787,7 @@ static int walIndexPage( */ static volatile WalCkptInfo *walCkptInfo(Wal *pWal){ assert( pWal->nWiData>0 && pWal->apWiData[0] ); + SEH_INJECT_FAULT; return (volatile WalCkptInfo*)&(pWal->apWiData[0][sizeof(WalIndexHdr)/2]); } @@ -57837,6 +64796,7 @@ static volatile WalCkptInfo *walCkptInfo(Wal *pWal){ */ static volatile WalIndexHdr *walIndexHdr(Wal *pWal){ assert( pWal->nWiData>0 && pWal->apWiData[0] ); + SEH_INJECT_FAULT; return (volatile WalIndexHdr*)pWal->apWiData[0]; } @@ -57853,7 +64813,7 @@ static volatile WalIndexHdr *walIndexHdr(Wal *pWal){ ) /* -** Generate or extend an 8 byte checksum based on the data in +** Generate or extend an 8 byte checksum based on the data in ** array aByte[] and the initial values of aIn[0] and aIn[1] (or ** initial values of 0 and 0 if aIn==NULL). ** @@ -57881,36 +64841,75 @@ static void walChecksumBytes( assert( nByte>=8 ); assert( (nByte&0x00000007)==0 ); + assert( nByte<=65536 ); + assert( nByte%4==0 ); - if( nativeCksum ){ - do { - s1 += *aData++ + s2; - s2 += *aData++ + s1; - }while( aDataexclusiveMode!=WAL_HEAPMEMORY_MODE ){ sqlite3OsShmBarrier(pWal->pDbFd); } } +/* +** Add the SQLITE_NO_TSAN as part of the return-type of a function +** definition as a hint that the function contains constructs that +** might give false-positive TSAN warnings. +** +** See tag-20200519-1. +*/ +#if defined(__clang__) && !defined(SQLITE_NO_TSAN) +# define SQLITE_NO_TSAN __attribute__((no_sanitize_thread)) +#else +# define SQLITE_NO_TSAN +#endif + /* ** Write the header information in pWal->hdr into the wal-index. ** ** The checksum on pWal->hdr is updated before it is written. */ -static void walIndexWriteHdr(Wal *pWal){ +static SQLITE_NO_TSAN void walIndexWriteHdr(Wal *pWal){ volatile WalIndexHdr *aHdr = walIndexHdr(pWal); const int nCksum = offsetof(WalIndexHdr, aCksum); @@ -57918,6 +64917,7 @@ static void walIndexWriteHdr(Wal *pWal){ pWal->hdr.isInit = 1; pWal->hdr.iVersion = WALINDEX_MAX_VERSION; walChecksumBytes(1, (u8*)&pWal->hdr, nCksum, 0, pWal->hdr.aCksum); + /* Possible TSAN false-positive. See tag-20200519-1 */ memcpy((void*)&aHdr[1], (const void*)&pWal->hdr, sizeof(WalIndexHdr)); walShmBarrier(pWal); memcpy((void*)&aHdr[0], (const void*)&pWal->hdr, sizeof(WalIndexHdr)); @@ -57925,11 +64925,11 @@ static void walIndexWriteHdr(Wal *pWal){ /* ** This function encodes a single frame header and writes it to a buffer -** supplied by the caller. A frame-header is made up of a series of +** supplied by the caller. A frame-header is made up of a series of ** 4-byte big-endian integers, as follows: ** ** 0: Page number. -** 4: For commit records, the size of the database image in pages +** 4: For commit records, the size of the database image in pages ** after the commit. For all other records, zero. ** 8: Salt-1 (copied from the wal-header) ** 12: Salt-2 (copied from the wal-header) @@ -57980,13 +64980,13 @@ static int walDecodeFrame( assert( WAL_FRAME_HDRSIZE==24 ); /* A frame is only valid if the salt values in the frame-header - ** match the salt values in the wal-header. + ** match the salt values in the wal-header. */ if( memcmp(&pWal->hdr.aSalt, &aFrame[8], 8)!=0 ){ return 0; } - /* A frame is only valid if the page number is creater than zero. + /* A frame is only valid if the page number is greater than zero. */ pgno = sqlite3Get4byte(&aFrame[0]); if( pgno==0 ){ @@ -57994,15 +64994,15 @@ static int walDecodeFrame( } /* A frame is only valid if a checksum of the WAL header, - ** all prior frams, the first 16 bytes of this frame-header, - ** and the frame-data matches the checksum in the last 8 + ** all prior frames, the first 16 bytes of this frame-header, + ** and the frame-data matches the checksum in the last 8 ** bytes of this frame-header. */ nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN); walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum); walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum); - if( aCksum[0]!=sqlite3Get4byte(&aFrame[16]) - || aCksum[1]!=sqlite3Get4byte(&aFrame[20]) + if( aCksum[0]!=sqlite3Get4byte(&aFrame[16]) + || aCksum[1]!=sqlite3Get4byte(&aFrame[20]) ){ /* Checksum failed. */ return 0; @@ -58037,7 +65037,7 @@ static const char *walLockName(int lockIdx){ } } #endif /*defined(SQLITE_TEST) || defined(SQLITE_DEBUG) */ - + /* ** Set or release locks on the WAL. Locks are either shared or exclusive. @@ -58053,13 +65053,19 @@ static int walLockShared(Wal *pWal, int lockIdx){ SQLITE_SHM_LOCK | SQLITE_SHM_SHARED); WALTRACE(("WAL%p: acquire SHARED-%s %s\n", pWal, walLockName(lockIdx), rc ? "failed" : "ok")); - VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); ) + VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); ) +#ifdef SQLITE_USE_SEH + if( rc==SQLITE_OK ) pWal->lockMask |= (1 << lockIdx); +#endif return rc; } static void walUnlockShared(Wal *pWal, int lockIdx){ if( pWal->exclusiveMode ) return; (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, 1, SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED); +#ifdef SQLITE_USE_SEH + pWal->lockMask &= ~(1 << lockIdx); +#endif WALTRACE(("WAL%p: release SHARED-%s\n", pWal, walLockName(lockIdx))); } static int walLockExclusive(Wal *pWal, int lockIdx, int n){ @@ -58069,13 +65075,21 @@ static int walLockExclusive(Wal *pWal, int lockIdx, int n){ SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE); WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal, walLockName(lockIdx), n, rc ? "failed" : "ok")); - VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); ) + VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); ) +#ifdef SQLITE_USE_SEH + if( rc==SQLITE_OK ){ + pWal->lockMask |= (((1<exclusiveMode ) return; (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, n, SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE); +#ifdef SQLITE_USE_SEH + pWal->lockMask &= ~(((1<aHash to point to the start of the hash table +** in the wal-index file. Set pLoc->iZero to one less than the frame ** number of the first frame indexed by this hash table. If a -** slot in the hash table is set to N, it refers to frame number -** (*piZero+N) in the log. +** slot in the hash table is set to N, it refers to frame number +** (pLoc->iZero+N) in the log. ** -** Finally, set *paPgno so that *paPgno[1] is the page number of the -** first frame indexed by the hash table, frame (*piZero+1). +** Finally, set pLoc->aPgno so that pLoc->aPgno[0] is the page number of the +** first frame indexed by the hash table, frame (pLoc->iZero). */ static int walHashGet( Wal *pWal, /* WAL handle */ int iHash, /* Find the iHash'th table */ - volatile ht_slot **paHash, /* OUT: Pointer to hash index */ - volatile u32 **paPgno, /* OUT: Pointer to page number array */ - u32 *piZero /* OUT: Frame associated with *paPgno[0] */ + WalHashLoc *pLoc /* OUT: Hash table location */ ){ int rc; /* Return code */ - volatile u32 *aPgno; - rc = walIndexPage(pWal, iHash, &aPgno); + rc = walIndexPage(pWal, iHash, &pLoc->aPgno); assert( rc==SQLITE_OK || iHash>0 ); - if( rc==SQLITE_OK ){ - u32 iZero; - volatile ht_slot *aHash; - - aHash = (volatile ht_slot *)&aPgno[HASHTABLE_NPAGE]; + if( pLoc->aPgno ){ + pLoc->aHash = (volatile ht_slot *)&pLoc->aPgno[HASHTABLE_NPAGE]; if( iHash==0 ){ - aPgno = &aPgno[WALINDEX_HDR_SIZE/sizeof(u32)]; - iZero = 0; + pLoc->aPgno = &pLoc->aPgno[WALINDEX_HDR_SIZE/sizeof(u32)]; + pLoc->iZero = 0; }else{ - iZero = HASHTABLE_NPAGE_ONE + (iHash-1)*HASHTABLE_NPAGE; + pLoc->iZero = HASHTABLE_NPAGE_ONE + (iHash-1)*HASHTABLE_NPAGE; } - - *paPgno = &aPgno[-1]; - *paHash = aHash; - *piZero = iZero; + }else if( NEVER(rc==SQLITE_OK) ){ + rc = SQLITE_ERROR; } return rc; } @@ -58143,7 +65161,7 @@ static int walHashGet( /* ** Return the number of the wal-index page that contains the hash-table ** and page-number array that contain entries corresponding to WAL frame -** iFrame. The wal-index is broken up into 32KB pages. Wal-index pages +** iFrame. The wal-index is broken up into 32KB pages. Wal-index pages ** are numbered starting from 0. */ static int walFramePage(u32 iFrame){ @@ -58154,6 +65172,7 @@ static int walFramePage(u32 iFrame){ && (iHash>=2 || iFrame<=HASHTABLE_NPAGE_ONE+HASHTABLE_NPAGE) && (iHash<=2 || iFrame>(HASHTABLE_NPAGE_ONE+2*HASHTABLE_NPAGE)) ); + assert( iHash>=0 ); return iHash; } @@ -58162,6 +65181,7 @@ static int walFramePage(u32 iFrame){ */ static u32 walFramePgno(Wal *pWal, u32 iFrame){ int iHash = walFramePage(iFrame); + SEH_INJECT_FAULT; if( iHash==0 ){ return pWal->apWiData[0][WALINDEX_HDR_SIZE/sizeof(u32) + iFrame - 1]; } @@ -58181,9 +65201,7 @@ static u32 walFramePgno(Wal *pWal, u32 iFrame){ ** actually needed. */ static void walCleanupHash(Wal *pWal){ - volatile ht_slot *aHash = 0; /* Pointer to hash table to clear */ - volatile u32 *aPgno = 0; /* Page number array for hash table */ - u32 iZero = 0; /* frame == (aHash[x]+iZero) */ + WalHashLoc sLoc; /* Hash table location */ int iLimit = 0; /* Zero values greater than this */ int nByte; /* Number of bytes to zero in aPgno[] */ int i; /* Used to iterate through aHash[] */ @@ -58195,30 +65213,32 @@ static void walCleanupHash(Wal *pWal){ if( pWal->hdr.mxFrame==0 ) return; - /* Obtain pointers to the hash-table and page-number array containing + /* Obtain pointers to the hash-table and page-number array containing ** the entry that corresponds to frame pWal->hdr.mxFrame. It is guaranteed - ** that the page said hash-table and array reside on is already mapped. + ** that the page said hash-table and array reside on is already mapped.(1) */ assert( pWal->nWiData>walFramePage(pWal->hdr.mxFrame) ); assert( pWal->apWiData[walFramePage(pWal->hdr.mxFrame)] ); - walHashGet(pWal, walFramePage(pWal->hdr.mxFrame), &aHash, &aPgno, &iZero); + i = walHashGet(pWal, walFramePage(pWal->hdr.mxFrame), &sLoc); + if( NEVER(i) ) return; /* Defense-in-depth, in case (1) above is wrong */ /* Zero all hash-table entries that correspond to frame numbers greater ** than pWal->hdr.mxFrame. */ - iLimit = pWal->hdr.mxFrame - iZero; + iLimit = pWal->hdr.mxFrame - sLoc.iZero; assert( iLimit>0 ); for(i=0; iiLimit ){ - aHash[i] = 0; + if( sLoc.aHash[i]>iLimit ){ + sLoc.aHash[i] = 0; } } - + /* Zero the entries in the aPgno array that correspond to frames with - ** frame numbers greater than pWal->hdr.mxFrame. + ** frame numbers greater than pWal->hdr.mxFrame. */ - nByte = (int)((char *)aHash - (char *)&aPgno[iLimit+1]); - memset((void *)&aPgno[iLimit+1], 0, nByte); + nByte = (int)((char *)sLoc.aHash - (char *)&sLoc.aPgno[iLimit]); + assert( nByte>=0 ); + memset((void *)&sLoc.aPgno[iLimit], 0, nByte); #ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT /* Verify that the every entry in the mapping region is still reachable @@ -58227,11 +65247,11 @@ static void walCleanupHash(Wal *pWal){ if( iLimit ){ int j; /* Loop counter */ int iKey; /* Hash key */ - for(j=1; j<=iLimit; j++){ - for(iKey=walHash(aPgno[j]); aHash[iKey]; iKey=walNextHash(iKey)){ - if( aHash[iKey]==j ) break; + for(j=0; j=0 ); + memset((void*)sLoc.aPgno, 0, nByte); } /* If the entry in aPgno[] is already set, then the previous writer ** must have exited unexpectedly in the middle of a transaction (after - ** writing one or more dirty pages to the WAL to free up memory). - ** Remove the remnants of that writers uncommitted transaction from + ** writing one or more dirty pages to the WAL to free up memory). + ** Remove the remnants of that writers uncommitted transaction from ** the hash-table before writing any new entries. */ - if( aPgno[idx] ){ + if( sLoc.aPgno[idx-1] ){ walCleanupHash(pWal); - assert( !aPgno[idx] ); + assert( !sLoc.aPgno[idx-1] ); } /* Write the aPgno[] array entry and the hash-table slot. */ nCollide = idx; - for(iKey=walHash(iPage); aHash[iKey]; iKey=walNextHash(iKey)){ + for(iKey=walHash(iPage); sLoc.aHash[iKey]; iKey=walNextHash(iKey)){ if( (nCollide--)==0 ) return SQLITE_CORRUPT_BKPT; } - aPgno[idx] = iPage; - aHash[iKey] = (ht_slot)idx; + sLoc.aPgno[idx-1] = iPage; + AtomicStore(&sLoc.aHash[iKey], (ht_slot)idx); #ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT /* Verify that the number of entries in the hash table exactly equals @@ -58295,7 +65314,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){ { int i; /* Loop counter */ int nEntry = 0; /* Number of entries in the hash table */ - for(i=0; iwriteLock ); iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock; rc = walLockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock); - if( rc==SQLITE_OK ){ - rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); - if( rc!=SQLITE_OK ){ - walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock); - } - } if( rc ){ return rc; } @@ -58370,15 +65384,16 @@ static int walIndexRecover(Wal *pWal){ if( nSize>WAL_HDRSIZE ){ u8 aBuf[WAL_HDRSIZE]; /* Buffer to load WAL header into */ + u32 *aPrivate = 0; /* Heap copy of *-shm hash being populated */ u8 *aFrame = 0; /* Malloc'd buffer to load entire frame */ int szFrame; /* Number of bytes in buffer aFrame[] */ u8 *aData; /* Pointer to data part of aFrame buffer */ - int iFrame; /* Index of last frame read */ - i64 iOffset; /* Next offset to read from log file */ int szPage; /* Page size according to the log */ u32 magic; /* Magic value read from WAL header */ u32 version; /* Magic value read from WAL header */ int isValid; /* True if this frame is valid */ + u32 iPg; /* Current 32KB wal-index page */ + u32 iLastFrame; /* Last frame in wal, based on nSize alone */ /* Read in the WAL header. */ rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0); @@ -58387,16 +65402,16 @@ static int walIndexRecover(Wal *pWal){ } /* If the database page size is not a power of two, or is greater than - ** SQLITE_MAX_PAGE_SIZE, conclude that the WAL file contains no valid + ** SQLITE_MAX_PAGE_SIZE, conclude that the WAL file contains no valid ** data. Similarly, if the 'magic' value is invalid, ignore the whole ** WAL file. */ magic = sqlite3Get4byte(&aBuf[0]); szPage = sqlite3Get4byte(&aBuf[8]); - if( (magic&0xFFFFFFFE)!=WAL_MAGIC - || szPage&(szPage-1) - || szPage>SQLITE_MAX_PAGE_SIZE - || szPage<512 + if( (magic&0xFFFFFFFE)!=WAL_MAGIC + || szPage&(szPage-1) + || szPage>SQLITE_MAX_PAGE_SIZE + || szPage<512 ){ goto finished; } @@ -58406,7 +65421,7 @@ static int walIndexRecover(Wal *pWal){ memcpy(&pWal->hdr.aSalt, &aBuf[16], 8); /* Verify that the WAL header checksum is correct */ - walChecksumBytes(pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN, + walChecksumBytes(pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN, aBuf, WAL_HDRSIZE-2*4, 0, pWal->hdr.aFrameCksum ); if( pWal->hdr.aFrameCksum[0]!=sqlite3Get4byte(&aBuf[24]) @@ -58425,40 +65440,90 @@ static int walIndexRecover(Wal *pWal){ /* Malloc a buffer to read frames into. */ szFrame = szPage + WAL_FRAME_HDRSIZE; - aFrame = (u8 *)sqlite3_malloc64(szFrame); + aFrame = (u8 *)sqlite3_malloc64(szFrame + WALINDEX_PGSZ); + SEH_FREE_ON_ERROR(0, aFrame); if( !aFrame ){ rc = SQLITE_NOMEM_BKPT; goto recovery_error; } aData = &aFrame[WAL_FRAME_HDRSIZE]; + aPrivate = (u32*)&aData[szPage]; /* Read all frames from the log file. */ - iFrame = 0; - for(iOffset=WAL_HDRSIZE; (iOffset+szFrame)<=nSize; iOffset+=szFrame){ - u32 pgno; /* Database page number for frame */ - u32 nTruncate; /* dbsize field from frame header */ + iLastFrame = (nSize - WAL_HDRSIZE) / szFrame; + for(iPg=0; iPg<=(u32)walFramePage(iLastFrame); iPg++){ + u32 *aShare; + u32 iFrame; /* Index of last frame read */ + u32 iLast = MIN(iLastFrame, HASHTABLE_NPAGE_ONE+iPg*HASHTABLE_NPAGE); + u32 iFirst = 1 + (iPg==0?0:HASHTABLE_NPAGE_ONE+(iPg-1)*HASHTABLE_NPAGE); + u32 nHdr, nHdr32; + rc = walIndexPage(pWal, iPg, (volatile u32**)&aShare); + assert( aShare!=0 || rc!=SQLITE_OK ); + if( aShare==0 ) break; + SEH_SET_ON_ERROR(iPg, aShare); + pWal->apWiData[iPg] = aPrivate; - /* Read and decode the next log frame. */ - iFrame++; - rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset); - if( rc!=SQLITE_OK ) break; - isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame); - if( !isValid ) break; - rc = walIndexAppend(pWal, iFrame, pgno); - if( rc!=SQLITE_OK ) break; + for(iFrame=iFirst; iFrame<=iLast; iFrame++){ + i64 iOffset = walFrameOffset(iFrame, szPage); + u32 pgno; /* Database page number for frame */ + u32 nTruncate; /* dbsize field from frame header */ - /* If nTruncate is non-zero, this is a commit record. */ - if( nTruncate ){ - pWal->hdr.mxFrame = iFrame; - pWal->hdr.nPage = nTruncate; - pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16)); - testcase( szPage<=32768 ); - testcase( szPage>=65536 ); - aFrameCksum[0] = pWal->hdr.aFrameCksum[0]; - aFrameCksum[1] = pWal->hdr.aFrameCksum[1]; + /* Read and decode the next log frame. */ + rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset); + if( rc!=SQLITE_OK ) break; + isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame); + if( !isValid ) break; + rc = walIndexAppend(pWal, iFrame, pgno); + if( NEVER(rc!=SQLITE_OK) ) break; + + /* If nTruncate is non-zero, this is a commit record. */ + if( nTruncate ){ + pWal->hdr.mxFrame = iFrame; + pWal->hdr.nPage = nTruncate; + pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16)); + testcase( szPage<=32768 ); + testcase( szPage>=65536 ); + aFrameCksum[0] = pWal->hdr.aFrameCksum[0]; + aFrameCksum[1] = pWal->hdr.aFrameCksum[1]; + } } + pWal->apWiData[iPg] = aShare; + SEH_SET_ON_ERROR(0,0); + nHdr = (iPg==0 ? WALINDEX_HDR_SIZE : 0); + nHdr32 = nHdr / sizeof(u32); +#ifndef SQLITE_SAFER_WALINDEX_RECOVERY + /* Memcpy() should work fine here, on all reasonable implementations. + ** Technically, memcpy() might change the destination to some + ** intermediate value before setting to the final value, and that might + ** cause a concurrent reader to malfunction. Memcpy() is allowed to + ** do that, according to the spec, but no memcpy() implementation that + ** we know of actually does that, which is why we say that memcpy() + ** is safe for this. Memcpy() is certainly a lot faster. + */ + memcpy(&aShare[nHdr32], &aPrivate[nHdr32], WALINDEX_PGSZ-nHdr); +#else + /* In the event that some platform is found for which memcpy() + ** changes the destination to some intermediate value before + ** setting the final value, this alternative copy routine is + ** provided. + */ + { + int i; + for(i=nHdr32; ihdr.aFrameCksum[1] = aFrameCksum[1]; walIndexWriteHdr(pWal); - /* Reset the checkpoint-header. This is safe because this thread is - ** currently holding locks that exclude all other readers, writers and - ** checkpointers. + /* Reset the checkpoint-header. This is safe because this thread is + ** currently holding locks that exclude all other writers and + ** checkpointers. Then set the values of read-mark slots 1 through N. */ pInfo = walCkptInfo(pWal); pInfo->nBackfill = 0; pInfo->nBackfillAttempted = pWal->hdr.mxFrame; pInfo->aReadMark[0] = 0; - for(i=1; iaReadMark[i] = READMARK_NOT_USED; - if( pWal->hdr.mxFrame ) pInfo->aReadMark[1] = pWal->hdr.mxFrame; + for(i=1; ihdr.mxFrame ){ + pInfo->aReadMark[i] = pWal->hdr.mxFrame; + }else{ + pInfo->aReadMark[i] = READMARK_NOT_USED; + } + SEH_INJECT_FAULT; + walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); + }else if( rc!=SQLITE_BUSY ){ + goto recovery_error; + } + } /* If more than one frame was recovered from the log file, report an ** event via sqlite3_log(). This is to help with identifying performance @@ -58497,7 +65574,6 @@ finished: recovery_error: WALTRACE(("WAL%p: recovery %s\n", pWal, rc ? "failed" : "ok")); walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock); - walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); return rc; } @@ -58517,8 +65593,8 @@ static void walIndexClose(Wal *pWal, int isDelete){ } } -/* -** Open a connection to the WAL file zWalName. The database file must +/* +** Open a connection to the WAL file zWalName. The database file must ** already be opened on connection pDbFd. The buffer that zWalName points ** to must remain valid for the lifetime of the returned Wal* handle. ** @@ -58528,7 +65604,7 @@ static void walIndexClose(Wal *pWal, int isDelete){ ** were to do this just after this client opened one of these files, the ** system would be badly broken. ** -** If the log file is successfully opened, SQLITE_OK is returned and +** If the log file is successfully opened, SQLITE_OK is returned and ** *ppWal is set to point to a new WAL handle. If an error occurs, ** an SQLite error code is returned and *ppWal is left unmodified. */ @@ -58547,14 +65623,43 @@ SQLITE_PRIVATE int sqlite3WalOpen( assert( zWalName && zWalName[0] ); assert( pDbFd ); + /* Verify the values of various constants. Any changes to the values + ** of these constants would result in an incompatible on-disk format + ** for the -shm file. Any change that causes one of these asserts to + ** fail is a backward compatibility problem, even if the change otherwise + ** works. + ** + ** This table also serves as a helpful cross-reference when trying to + ** interpret hex dumps of the -shm file. + */ + assert( 48 == sizeof(WalIndexHdr) ); + assert( 40 == sizeof(WalCkptInfo) ); + assert( 120 == WALINDEX_LOCK_OFFSET ); + assert( 136 == WALINDEX_HDR_SIZE ); + assert( 4096 == HASHTABLE_NPAGE ); + assert( 4062 == HASHTABLE_NPAGE_ONE ); + assert( 8192 == HASHTABLE_NSLOT ); + assert( 383 == HASHTABLE_HASH_1 ); + assert( 32768 == WALINDEX_PGSZ ); + assert( 8 == SQLITE_SHM_NLOCK ); + assert( 5 == WAL_NREADER ); + assert( 24 == WAL_FRAME_HDRSIZE ); + assert( 32 == WAL_HDRSIZE ); + assert( 120 == WALINDEX_LOCK_OFFSET + WAL_WRITE_LOCK ); + assert( 121 == WALINDEX_LOCK_OFFSET + WAL_CKPT_LOCK ); + assert( 122 == WALINDEX_LOCK_OFFSET + WAL_RECOVER_LOCK ); + assert( 123 == WALINDEX_LOCK_OFFSET + WAL_READ_LOCK(0) ); + assert( 124 == WALINDEX_LOCK_OFFSET + WAL_READ_LOCK(1) ); + assert( 125 == WALINDEX_LOCK_OFFSET + WAL_READ_LOCK(2) ); + assert( 126 == WALINDEX_LOCK_OFFSET + WAL_READ_LOCK(3) ); + assert( 127 == WALINDEX_LOCK_OFFSET + WAL_READ_LOCK(4) ); + /* In the amalgamation, the os_unix.c and os_win.c source files come before ** this source file. Verify that the #defines of the locking byte offsets ** in os_unix.c and os_win.c agree with the WALINDEX_LOCK_OFFSET value. ** For that matter, if the lock offset ever changes from its initial design ** value of 120, we need to know that so there is an assert() to check it. */ - assert( 120==WALINDEX_LOCK_OFFSET ); - assert( 136==WALINDEX_HDR_SIZE ); #ifdef WIN_SHM_BASE assert( WIN_SHM_BASE==WALINDEX_LOCK_OFFSET ); #endif @@ -58604,7 +65709,7 @@ SQLITE_PRIVATE int sqlite3WalOpen( } /* -** Change the size to which the WAL file is trucated on each reset. +** Change the size to which the WAL file is truncated on each reset. */ SQLITE_PRIVATE void sqlite3WalLimit(Wal *pWal, i64 iLimit){ if( pWal ) pWal->mxWalSize = iLimit; @@ -58692,7 +65797,7 @@ static void walMerge( ht_slot logpage; Pgno dbpage; - if( (iLeft=nRight || aContent[aLeft[iLeft]]HASHTABLE_NPAGE?HASHTABLE_NPAGE:iLast) + ); if( !p ){ return SQLITE_NOMEM_BKPT; } memset(p, 0, nByte); p->nSegment = nSegment; - - /* Allocate temporary space used by the merge-sort routine. This block - ** of memory will be freed before this function returns. - */ - aTmp = (ht_slot *)sqlite3_malloc64( - sizeof(ht_slot) * (iLast>HASHTABLE_NPAGE?HASHTABLE_NPAGE:iLast) - ); - if( !aTmp ){ - rc = SQLITE_NOMEM_BKPT; - } - + aTmp = (ht_slot*)&(((u8*)p)[nByte]); + SEH_FREE_ON_ERROR(0, p); for(i=walFramePage(nBackfill+1); rc==SQLITE_OK && iaSegment[p->nSegment])[iZero]; - iZero++; - + aIndex = &((ht_slot *)&p->aSegment[p->nSegment])[sLoc.iZero]; + sLoc.iZero++; + for(j=0; jaSegment[i].iZero = iZero; + walMergesort((u32 *)sLoc.aPgno, aTmp, aIndex, &nEntry); + p->aSegment[i].iZero = sLoc.iZero; p->aSegment[i].nEntry = nEntry; p->aSegment[i].aIndex = aIndex; - p->aSegment[i].aPgno = (u32 *)aPgno; + p->aSegment[i].aPgno = (u32 *)sLoc.aPgno; } } - sqlite3_free(aTmp); - if( rc!=SQLITE_OK ){ + SEH_FREE_ON_ERROR(p, 0); walIteratorFree(p); p = 0; } @@ -58887,6 +65981,89 @@ static int walIteratorInit(Wal *pWal, u32 nBackfill, WalIterator **pp){ return rc; } +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT +/* +** Attempt to enable blocking locks. Blocking locks are enabled only if (a) +** they are supported by the VFS, and (b) the database handle is configured +** with a busy-timeout. Return 1 if blocking locks are successfully enabled, +** or 0 otherwise. +*/ +static int walEnableBlocking(Wal *pWal){ + int res = 0; + if( pWal->db ){ + int tmout = pWal->db->busyTimeout; + if( tmout ){ + int rc; + rc = sqlite3OsFileControl( + pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout + ); + res = (rc==SQLITE_OK); + } + } + return res; +} + +/* +** Disable blocking locks. +*/ +static void walDisableBlocking(Wal *pWal){ + int tmout = 0; + sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout); +} + +/* +** If parameter bLock is true, attempt to enable blocking locks, take +** the WRITER lock, and then disable blocking locks. If blocking locks +** cannot be enabled, no attempt to obtain the WRITER lock is made. Return +** an SQLite error code if an error occurs, or SQLITE_OK otherwise. It is not +** an error if blocking locks can not be enabled. +** +** If the bLock parameter is false and the WRITER lock is held, release it. +*/ +SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock){ + int rc = SQLITE_OK; + assert( pWal->readLock<0 || bLock==0 ); + if( bLock ){ + assert( pWal->db ); + if( walEnableBlocking(pWal) ){ + rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1); + if( rc==SQLITE_OK ){ + pWal->writeLock = 1; + } + walDisableBlocking(pWal); + } + }else if( pWal->writeLock ){ + walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1); + pWal->writeLock = 0; + } + return rc; +} + +/* +** Set the database handle used to determine if blocking locks are required. +*/ +SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db){ + pWal->db = db; +} + +/* +** Take an exclusive WRITE lock. Blocking if so configured. +*/ +static int walLockWriter(Wal *pWal){ + int rc; + walEnableBlocking(pWal); + rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1); + walDisableBlocking(pWal); + return rc; +} +#else +# define walEnableBlocking(x) 0 +# define walDisableBlocking(x) +# define walLockWriter(pWal) walLockExclusive((pWal), WAL_WRITE_LOCK, 1) +# define sqlite3WalDb(pWal, db) +#endif /* ifdef SQLITE_ENABLE_SETLK_TIMEOUT */ + + /* ** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and ** n. If the attempt fails and parameter xBusy is not NULL, then it is a @@ -58904,6 +66081,12 @@ static int walBusyLock( do { rc = walLockExclusive(pWal, lockIdx, n); }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) ); +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + if( rc==SQLITE_BUSY_TIMEOUT ){ + walDisableBlocking(pWal); + rc = SQLITE_BUSY; + } +#endif return rc; } @@ -58928,8 +66111,8 @@ static int walPagesize(Wal *pWal){ ** client to write to the database (which may be this one) does so by ** writing frames into the start of the log file. ** -** The value of parameter salt1 is used as the aSalt[1] value in the -** new wal-index header. It should be passed a pseudo-random value (i.e. +** The value of parameter salt1 is used as the aSalt[1] value in the +** new wal-index header. It should be passed a pseudo-random value (i.e. ** one obtained from sqlite3_randomness()). */ static void walRestartHdr(Wal *pWal, u32 salt1){ @@ -58941,7 +66124,7 @@ static void walRestartHdr(Wal *pWal, u32 salt1){ sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0])); memcpy(&pWal->hdr.aSalt[1], &salt1, 4); walIndexWriteHdr(pWal); - pInfo->nBackfill = 0; + AtomicStore(&pInfo->nBackfill, 0); pInfo->nBackfillAttempted = 0; pInfo->aReadMark[1] = 0; for(i=2; iaReadMark[i] = READMARK_NOT_USED; @@ -58957,8 +66140,8 @@ static void walRestartHdr(Wal *pWal, u32 salt1){ ** that a concurrent reader might be using. ** ** All I/O barrier operations (a.k.a fsyncs) occur in this routine when -** SQLite is in WAL-mode in synchronous=NORMAL. That means that if -** checkpoints are always run by a background thread or background +** SQLite is in WAL-mode in synchronous=NORMAL. That means that if +** checkpoints are always run by a background thread or background ** process, foreground threads will never block on a lengthy fsync call. ** ** Fsync is called on the WAL before writing content out of the WAL and @@ -58971,7 +66154,7 @@ static void walRestartHdr(Wal *pWal, u32 salt1){ ** database file. ** ** This routine uses and updates the nBackfill field of the wal-index header. -** This is the only routine that will increase the value of nBackfill. +** This is the only routine that will increase the value of nBackfill. ** (A WAL reset or recovery will revert nBackfill to zero, but not increase ** its value.) ** @@ -59016,20 +66199,13 @@ static int walCheckpoint( mxSafeFrame = pWal->hdr.mxFrame; mxPage = pWal->hdr.nPage; for(i=1; iaReadMark[i]; + u32 y = AtomicLoad(pInfo->aReadMark+i); SEH_INJECT_FAULT; if( mxSafeFrame>y ){ assert( y<=pWal->hdr.mxFrame ); rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1); if( rc==SQLITE_OK ){ - pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED); + u32 iMark = (i==1 ? mxSafeFrame : READMARK_NOT_USED); + AtomicStore(pInfo->aReadMark+i, iMark); SEH_INJECT_FAULT; walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); }else if( rc==SQLITE_BUSY ){ mxSafeFrame = y; @@ -59047,12 +66223,10 @@ static int walCheckpoint( } if( pIter - && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0),1))==SQLITE_OK + && (rc = walBusyLock(pWal,xBusy,pBusyArg,WAL_READ_LOCK(0),1))==SQLITE_OK ){ - i64 nSize; /* Current size of database file */ u32 nBackfill = pInfo->nBackfill; - - pInfo->nBackfillAttempted = mxSafeFrame; + pInfo->nBackfillAttempted = mxSafeFrame; SEH_INJECT_FAULT; /* Sync the WAL to disk */ rc = sqlite3OsSync(pWal->pWalFd, CKPT_SYNC_FLAGS(sync_flags)); @@ -59062,18 +66236,29 @@ static int walCheckpoint( */ if( rc==SQLITE_OK ){ i64 nReq = ((i64)mxPage * szPage); + i64 nSize; /* Current size of database file */ + sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_START, 0); rc = sqlite3OsFileSize(pWal->pDbFd, &nSize); if( rc==SQLITE_OK && nSizepDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq); + if( (nSize+65536+(i64)pWal->hdr.mxFrame*szPage)pDbFd, SQLITE_FCNTL_SIZE_HINT,&nReq); + } } - } + } /* Iterate through the contents of the WAL, copying data to the db file */ while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){ i64 iOffset; assert( walFramePgno(pWal, iFrame)==iDbpage ); - if( db->u1.isInterrupted ){ + SEH_INJECT_FAULT; + if( AtomicLoad(&db->u1.isInterrupted) ){ rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT; break; } @@ -59089,6 +66274,7 @@ static int walCheckpoint( rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset); if( rc!=SQLITE_OK ) break; } + sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_DONE, 0); /* If work was actually accomplished... */ if( rc==SQLITE_OK ){ @@ -59101,7 +66287,7 @@ static int walCheckpoint( } } if( rc==SQLITE_OK ){ - pInfo->nBackfill = mxSafeFrame; + AtomicStore(&pInfo->nBackfill, mxSafeFrame); SEH_INJECT_FAULT; } } @@ -59117,12 +66303,13 @@ static int walCheckpoint( } /* If this is an SQLITE_CHECKPOINT_RESTART or TRUNCATE operation, and the - ** entire wal file has been copied into the database file, then block - ** until all readers have finished using the wal file. This ensures that + ** entire wal file has been copied into the database file, then block + ** until all readers have finished using the wal file. This ensures that ** the next process to write to the database restarts the wal file. */ if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){ assert( pWal->writeLock ); + SEH_INJECT_FAULT; if( pInfo->nBackfillhdr.mxFrame ){ rc = SQLITE_BUSY; }else if( eMode>=SQLITE_CHECKPOINT_RESTART ){ @@ -59142,7 +66329,7 @@ static int walCheckpoint( ** writer clients should see that the entire log file has been ** checkpointed and behave accordingly. This seems unsafe though, ** as it would leave the system in a state where the contents of - ** the wal-index header do not match the contents of the + ** the wal-index header do not match the contents of the ** file-system. To avoid this, update the wal-index header to ** indicate that the log file contains zero valid frames. */ walRestartHdr(pWal, salt1); @@ -59154,6 +66341,7 @@ static int walCheckpoint( } walcheckpoint_out: + SEH_FREE_ON_ERROR(pIter, 0); walIteratorFree(pIter); return rc; } @@ -59176,6 +66364,93 @@ static void walLimitSize(Wal *pWal, i64 nMax){ } } +#ifdef SQLITE_USE_SEH +/* +** This is the "standard" exception handler used in a few places to handle +** an exception thrown by reading from the *-shm mapping after it has become +** invalid in SQLITE_USE_SEH builds. It is used as follows: +** +** SEH_TRY { ... } +** SEH_EXCEPT( rc = walHandleException(pWal); ) +** +** This function does three things: +** +** 1) Determines the locks that should be held, based on the contents of +** the Wal.readLock, Wal.writeLock and Wal.ckptLock variables. All other +** held locks are assumed to be transient locks that would have been +** released had the exception not been thrown and are dropped. +** +** 2) Frees the pointer at Wal.pFree, if any, using sqlite3_free(). +** +** 3) Set pWal->apWiData[pWal->iWiPg] to pWal->pWiValue if not NULL +** +** 4) Returns SQLITE_IOERR. +*/ +static int walHandleException(Wal *pWal){ + if( pWal->exclusiveMode==0 ){ + static const int S = 1; + static const int E = (1<lockMask & ~( + (pWal->readLock<0 ? 0 : (S << WAL_READ_LOCK(pWal->readLock))) + | (pWal->writeLock ? (E << WAL_WRITE_LOCK) : 0) + | (pWal->ckptLock ? (E << WAL_CKPT_LOCK) : 0) + ); + for(ii=0; iipFree); + pWal->pFree = 0; + if( pWal->pWiValue ){ + pWal->apWiData[pWal->iWiPg] = pWal->pWiValue; + pWal->pWiValue = 0; + } + return SQLITE_IOERR_IN_PAGE; +} + +/* +** Assert that the Wal.lockMask mask, which indicates the locks held +** by the connenction, is consistent with the Wal.readLock, Wal.writeLock +** and Wal.ckptLock variables. To be used as: +** +** assert( walAssertLockmask(pWal) ); +*/ +static int walAssertLockmask(Wal *pWal){ + if( pWal->exclusiveMode==0 ){ + static const int S = 1; + static const int E = (1<readLock<0 ? 0 : (S << WAL_READ_LOCK(pWal->readLock))) + | (pWal->writeLock ? (E << WAL_WRITE_LOCK) : 0) + | (pWal->ckptLock ? (E << WAL_CKPT_LOCK) : 0) +#ifdef SQLITE_ENABLE_SNAPSHOT + | (pWal->pSnapshot ? (pWal->lockMask & (1 << WAL_CKPT_LOCK)) : 0) +#endif + ); + assert( mExpect==pWal->lockMask ); + } + return 1; +} + +/* +** Return and zero the "system error" field set when an +** EXCEPTION_IN_PAGE_ERROR exception is caught. +*/ +SQLITE_PRIVATE int sqlite3WalSystemErrno(Wal *pWal){ + int iRet = 0; + if( pWal ){ + iRet = pWal->iSysErrno; + pWal->iSysErrno = 0; + } + return iRet; +} + +#else +# define walAssertLockmask(x) 1 +#endif /* ifdef SQLITE_USE_SEH */ + /* ** Close a connection to a log file. */ @@ -59190,6 +66465,8 @@ SQLITE_PRIVATE int sqlite3WalClose( if( pWal ){ int isDelete = 0; /* True to unlink wal and wal-index files */ + assert( walAssertLockmask(pWal) ); + /* If an EXCLUSIVE lock can be obtained on the database file (using the ** ordinary, rollback-mode locking methods, this guarantees that the ** connection associated with this log file is the only connection to @@ -59204,7 +66481,7 @@ SQLITE_PRIVATE int sqlite3WalClose( if( pWal->exclusiveMode==WAL_NORMAL_MODE ){ pWal->exclusiveMode = WAL_EXCLUSIVE_MODE; } - rc = sqlite3WalCheckpoint(pWal, db, + rc = sqlite3WalCheckpoint(pWal, db, SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0 ); if( rc==SQLITE_OK ){ @@ -59214,7 +66491,7 @@ SQLITE_PRIVATE int sqlite3WalClose( ); if( bPersist!=1 ){ /* Try to delete the WAL file if the checkpoint completed and - ** fsyned (rc==SQLITE_OK) and if we are not in persistent-wal + ** fsynced (rc==SQLITE_OK) and if we are not in persistent-wal ** mode (!bPersist) */ isDelete = 1; }else if( pWal->mxWalSize>=0 ){ @@ -59260,7 +66537,7 @@ SQLITE_PRIVATE int sqlite3WalClose( ** If the checksum cannot be verified return non-zero. If the header ** is read successfully and the checksum verified, return zero. */ -static int walIndexTryHdr(Wal *pWal, int *pChanged){ +static SQLITE_NO_TSAN int walIndexTryHdr(Wal *pWal, int *pChanged){ u32 aCksum[2]; /* Checksum on the header content */ WalIndexHdr h1, h2; /* Two copies of the header content */ WalIndexHdr volatile *aHdr; /* Header in shared memory */ @@ -59273,19 +66550,25 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){ ** meaning it is possible that an inconsistent snapshot is read ** from the file. If this happens, return non-zero. ** + ** tag-20200519-1: ** There are two copies of the header at the beginning of the wal-index. ** When reading, read [0] first then [1]. Writes are in the reverse order. ** Memory barriers are used to prevent the compiler or the hardware from - ** reordering the reads and writes. + ** reordering the reads and writes. TSAN and similar tools can sometimes + ** give false-positive warnings about these accesses because the tools do not + ** account for the double-read and the memory barrier. The use of mutexes + ** here would be problematic as the memory being accessed is potentially + ** shared among multiple processes and not all mutex implementations work + ** reliably in that environment. */ aHdr = walIndexHdr(pWal); - memcpy(&h1, (void *)&aHdr[0], sizeof(h1)); + memcpy(&h1, (void *)&aHdr[0], sizeof(h1)); /* Possible TSAN false-positive */ walShmBarrier(pWal); memcpy(&h2, (void *)&aHdr[1], sizeof(h2)); if( memcmp(&h1, &h2, sizeof(h1))!=0 ){ return 1; /* Dirty read */ - } + } if( h1.isInit==0 ){ return 1; /* Malformed header - probably all zeros */ } @@ -59321,7 +66604,7 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){ ** changed by this operation. If pWal->hdr is unchanged, set *pChanged ** to 0. ** -** If the wal-index header is successfully read, return SQLITE_OK. +** If the wal-index header is successfully read, return SQLITE_OK. ** Otherwise an SQLite error code. */ static int walIndexReadHdr(Wal *pWal, int *pChanged){ @@ -59329,7 +66612,7 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){ int badHdr; /* True if a header read failed */ volatile u32 *page0; /* Chunk of wal-index containing header */ - /* Ensure that page 0 of the wal-index (the page that contains the + /* Ensure that page 0 of the wal-index (the page that contains the ** wal-index header) is mapped. Return early if an error occurs here. */ assert( pChanged ); @@ -59361,7 +66644,7 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){ /* If the first page of the wal-index has been mapped, try to read the ** wal-index header immediately, without holding any lock. This usually - ** works, but may fail if the wal-index header is corrupt or currently + ** works, but may fail if the wal-index header is corrupt or currently ** being modified by another thread or process. */ badHdr = (page0 ? walIndexTryHdr(pWal, pChanged) : 1); @@ -59369,28 +66652,32 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){ /* If the first attempt failed, it might have been due to a race ** with a writer. So get a WRITE lock and try again. */ - assert( badHdr==0 || pWal->writeLock==0 ); if( badHdr ){ if( pWal->bShmUnreliable==0 && (pWal->readOnly & WAL_SHM_RDONLY) ){ if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){ walUnlockShared(pWal, WAL_WRITE_LOCK); rc = SQLITE_READONLY_RECOVERY; } - }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){ - pWal->writeLock = 1; - if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){ - badHdr = walIndexTryHdr(pWal, pChanged); - if( badHdr ){ - /* If the wal-index header is still malformed even while holding - ** a WRITE lock, it can only mean that the header is corrupted and - ** needs to be reconstructed. So run recovery to do exactly that. - */ - rc = walIndexRecover(pWal); - *pChanged = 1; + }else{ + int bWriteLock = pWal->writeLock; + if( bWriteLock || SQLITE_OK==(rc = walLockWriter(pWal)) ){ + pWal->writeLock = 1; + if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){ + badHdr = walIndexTryHdr(pWal, pChanged); + if( badHdr ){ + /* If the wal-index header is still malformed even while holding + ** a WRITE lock, it can only mean that the header is corrupted and + ** needs to be reconstructed. So run recovery to do exactly that. + */ + rc = walIndexRecover(pWal); + *pChanged = 1; + } + } + if( bWriteLock==0 ){ + pWal->writeLock = 0; + walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1); } } - pWal->writeLock = 0; - walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1); } } @@ -59432,15 +66719,15 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){ ** ** The *-wal file has been read and an appropriate wal-index has been ** constructed in pWal->apWiData[] using heap memory instead of shared -** memory. +** memory. ** ** If this function returns SQLITE_OK, then the read transaction has -** been successfully opened. In this case output variable (*pChanged) +** been successfully opened. In this case output variable (*pChanged) ** is set to true before returning if the caller should discard the -** contents of the page cache before proceeding. Or, if it returns -** WAL_RETRY, then the heap memory wal-index has been discarded and -** the caller should retry opening the read transaction from the -** beginning (including attempting to map the *-shm file). +** contents of the page cache before proceeding. Or, if it returns +** WAL_RETRY, then the heap memory wal-index has been discarded and +** the caller should retry opening the read transaction from the +** beginning (including attempting to map the *-shm file). ** ** If an error occurs, an SQLite error code is returned. */ @@ -59537,7 +66824,9 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){ } /* Allocate a buffer to read frames into */ - szFrame = pWal->hdr.szPage + WAL_FRAME_HDRSIZE; + assert( (pWal->szPage & (pWal->szPage-1))==0 ); + assert( pWal->szPage>=512 && pWal->szPage<=65536 ); + szFrame = pWal->szPage + WAL_FRAME_HDRSIZE; aFrame = (u8 *)sqlite3_malloc64(szFrame); if( aFrame==0 ){ rc = SQLITE_NOMEM_BKPT; @@ -59551,8 +66840,8 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){ ** the caller. */ aSaveCksum[0] = pWal->hdr.aFrameCksum[0]; aSaveCksum[1] = pWal->hdr.aFrameCksum[1]; - for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->hdr.szPage); - iOffset+szFrame<=szWal; + for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->szPage); + iOffset+szFrame<=szWal; iOffset+=szFrame ){ u32 pgno; /* Database page number for frame */ @@ -59600,10 +66889,10 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){ ** ** The useWal parameter is true to force the use of the WAL and disable ** the case where the WAL is bypassed because it has been completely -** checkpointed. If useWal==0 then this routine calls walIndexReadHdr() -** to make a copy of the wal-index header into pWal->hdr. If the -** wal-index header has changed, *pChanged is set to 1 (as an indication -** to the caller that the local page cache is obsolete and needs to be +** checkpointed. If useWal==0 then this routine calls walIndexReadHdr() +** to make a copy of the wal-index header into pWal->hdr. If the +** wal-index header has changed, *pChanged is set to 1 (as an indication +** to the caller that the local page cache is obsolete and needs to be ** flushed.) When useWal==1, the wal-index header is assumed to already ** be loaded and the pChanged parameter is unused. ** @@ -59618,7 +66907,7 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){ ** bad luck when there is lots of contention for the wal-index, but that ** possibility is so small that it can be safely neglected, we believe. ** -** On success, this routine obtains a read lock on +** On success, this routine obtains a read lock on ** WAL_READ_LOCK(pWal->readLock). The pWal->readLock integer is ** in the range 0 <= pWal->readLock < WAL_NREADER. If pWal->readLock==(-1) ** that means the Wal does not hold any read lock. The reader must not @@ -59656,16 +66945,16 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** ** Circumstances that cause a RETRY should only last for the briefest ** instances of time. No I/O or other system calls are done while the - ** locks are held, so the locks should not be held for very long. But + ** locks are held, so the locks should not be held for very long. But ** if we are unlucky, another process that is holding a lock might get - ** paged out or take a page-fault that is time-consuming to resolve, + ** paged out or take a page-fault that is time-consuming to resolve, ** during the few nanoseconds that it is holding the lock. In that case, ** it might take longer than normal for the lock to free. ** ** After 5 RETRYs, we begin calling sqlite3OsSleep(). The first few ** calls to sqlite3OsSleep() have a delay of 1 microsecond. Really this ** is more of a scheduler yield than an actual delay. But on the 10th - ** an subsequent retries, the delays start becoming longer and longer, + ** an subsequent retries, the delays start becoming longer and longer, ** so that on the 100th (and last) RETRY we delay for 323 milliseconds. ** The total delay time before giving up is less than 10 seconds. */ @@ -59696,9 +66985,9 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ if( pWal->apWiData[0]==0 ){ /* This branch is taken when the xShmMap() method returns SQLITE_BUSY. ** We assume this is a transient condition, so return WAL_RETRY. The - ** xShmMap() implementation used by the default unix and win32 VFS - ** modules may return SQLITE_BUSY due to a race condition in the - ** code that determines whether or not the shared-memory region + ** xShmMap() implementation used by the default unix and win32 VFS + ** modules may return SQLITE_BUSY due to a race condition in the + ** code that determines whether or not the shared-memory region ** must be zeroed before the requested page is returned. */ rc = WAL_RETRY; @@ -59720,7 +67009,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ assert( pWal->nWiData>0 ); assert( pWal->apWiData[0]!=0 ); pInfo = walCkptInfo(pWal); - if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame + SEH_INJECT_FAULT; + if( !useWal && AtomicLoad(&pInfo->nBackfill)==pWal->hdr.mxFrame #ifdef SQLITE_ENABLE_SNAPSHOT && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0) #endif @@ -59739,7 +67029,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** snapshot. Since holding READ_LOCK(0) prevents a checkpoint from ** happening, this is usually correct. ** - ** However, if frames have been appended to the log (or if the log + ** However, if frames have been appended to the log (or if the log ** is wrapped and written for that matter) before the READ_LOCK(0) ** is obtained, that is not necessarily true. A checkpointer may ** have started to backfill the appended frames but crashed before @@ -59769,7 +67059,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ } #endif for(i=1; iaReadMark[i]; + u32 thisMark = AtomicLoad(pInfo->aReadMark+i); SEH_INJECT_FAULT; if( mxReadMark<=thisMark && thisMark<=mxFrame ){ assert( thisMark!=READMARK_NOT_USED ); mxReadMark = thisMark; @@ -59782,7 +67072,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ for(i=1; iaReadMark[i] = mxFrame; + AtomicStore(pInfo->aReadMark+i,mxFrame); + mxReadMark = mxFrame; mxI = i; walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); break; @@ -59820,9 +67111,9 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** to read any frames earlier than minFrame from the wal file - they ** can be safely read directly from the database file. ** - ** Because a ShmBarrier() call is made between taking the copy of + ** Because a ShmBarrier() call is made between taking the copy of ** nBackfill and checking that the wal-header in shared-memory still - ** matches the one cached in pWal->hdr, it is guaranteed that the + ** matches the one cached in pWal->hdr, it is guaranteed that the ** checkpointer that set nBackfill was not working with a wal-index ** header newer than that cached in pWal->hdr. If it were, that could ** cause a problem. The checkpointer could omit to checkpoint @@ -59834,9 +67125,9 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** we can guarantee that the checkpointer that set nBackfill could not ** see any pages past pWal->hdr.mxFrame, this problem does not come up. */ - pWal->minFrame = pInfo->nBackfill+1; + pWal->minFrame = AtomicLoad(&pInfo->nBackfill)+1; SEH_INJECT_FAULT; walShmBarrier(pWal); - if( pInfo->aReadMark[mxI]!=mxReadMark + if( AtomicLoad(pInfo->aReadMark+mxI)!=mxReadMark || memcmp((void *)walIndexHdr(pWal), &pWal->hdr, sizeof(WalIndexHdr)) ){ walUnlockShared(pWal, WAL_READ_LOCK(mxI)); @@ -59850,15 +67141,63 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ #ifdef SQLITE_ENABLE_SNAPSHOT /* -** Attempt to reduce the value of the WalCkptInfo.nBackfillAttempted +** This function does the work of sqlite3WalSnapshotRecover(). +*/ +static int walSnapshotRecover( + Wal *pWal, /* WAL handle */ + void *pBuf1, /* Temp buffer pWal->szPage bytes in size */ + void *pBuf2 /* Temp buffer pWal->szPage bytes in size */ +){ + int szPage = (int)pWal->szPage; + int rc; + i64 szDb; /* Size of db file in bytes */ + + rc = sqlite3OsFileSize(pWal->pDbFd, &szDb); + if( rc==SQLITE_OK ){ + volatile WalCkptInfo *pInfo = walCkptInfo(pWal); + u32 i = pInfo->nBackfillAttempted; + for(i=pInfo->nBackfillAttempted; i>AtomicLoad(&pInfo->nBackfill); i--){ + WalHashLoc sLoc; /* Hash table location */ + u32 pgno; /* Page number in db file */ + i64 iDbOff; /* Offset of db file entry */ + i64 iWalOff; /* Offset of wal file entry */ + + rc = walHashGet(pWal, walFramePage(i), &sLoc); + if( rc!=SQLITE_OK ) break; + assert( i - sLoc.iZero - 1 >=0 ); + pgno = sLoc.aPgno[i-sLoc.iZero-1]; + iDbOff = (i64)(pgno-1) * szPage; + + if( iDbOff+szPage<=szDb ){ + iWalOff = walFrameOffset(i, szPage) + WAL_FRAME_HDRSIZE; + rc = sqlite3OsRead(pWal->pWalFd, pBuf1, szPage, iWalOff); + + if( rc==SQLITE_OK ){ + rc = sqlite3OsRead(pWal->pDbFd, pBuf2, szPage, iDbOff); + } + + if( rc!=SQLITE_OK || 0==memcmp(pBuf1, pBuf2, szPage) ){ + break; + } + } + + pInfo->nBackfillAttempted = i-1; + } + } + + return rc; +} + +/* +** Attempt to reduce the value of the WalCkptInfo.nBackfillAttempted ** variable so that older snapshots can be accessed. To do this, loop -** through all wal frames from nBackfillAttempted to (nBackfill+1), +** through all wal frames from nBackfillAttempted to (nBackfill+1), ** comparing their content to the corresponding page with the database ** file, if any. Set nBackfillAttempted to the frame number of the ** first frame for which the wal file content matches the db file. ** -** This is only really safe if the file-system is such that any page -** writes made by earlier checkpointers were atomic operations, which +** This is only really safe if the file-system is such that any page +** writes made by earlier checkpointers were atomic operations, which ** is not always true. It is also possible that nBackfillAttempted ** may be left set to a value larger than expected, if a wal frame ** contains content that duplicate of an earlier version of the same @@ -59874,51 +67213,21 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){ assert( pWal->readLock>=0 ); rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1); if( rc==SQLITE_OK ){ - volatile WalCkptInfo *pInfo = walCkptInfo(pWal); - int szPage = (int)pWal->szPage; - i64 szDb; /* Size of db file in bytes */ - - rc = sqlite3OsFileSize(pWal->pDbFd, &szDb); - if( rc==SQLITE_OK ){ - void *pBuf1 = sqlite3_malloc(szPage); - void *pBuf2 = sqlite3_malloc(szPage); - if( pBuf1==0 || pBuf2==0 ){ - rc = SQLITE_NOMEM; - }else{ - u32 i = pInfo->nBackfillAttempted; - for(i=pInfo->nBackfillAttempted; i>pInfo->nBackfill; i--){ - volatile ht_slot *dummy; - volatile u32 *aPgno; /* Array of page numbers */ - u32 iZero; /* Frame corresponding to aPgno[0] */ - u32 pgno; /* Page number in db file */ - i64 iDbOff; /* Offset of db file entry */ - i64 iWalOff; /* Offset of wal file entry */ - - rc = walHashGet(pWal, walFramePage(i), &dummy, &aPgno, &iZero); - if( rc!=SQLITE_OK ) break; - pgno = aPgno[i-iZero]; - iDbOff = (i64)(pgno-1) * szPage; - - if( iDbOff+szPage<=szDb ){ - iWalOff = walFrameOffset(i, szPage) + WAL_FRAME_HDRSIZE; - rc = sqlite3OsRead(pWal->pWalFd, pBuf1, szPage, iWalOff); - - if( rc==SQLITE_OK ){ - rc = sqlite3OsRead(pWal->pDbFd, pBuf2, szPage, iDbOff); - } - - if( rc!=SQLITE_OK || 0==memcmp(pBuf1, pBuf2, szPage) ){ - break; - } - } - - pInfo->nBackfillAttempted = i-1; - } + void *pBuf1 = sqlite3_malloc(pWal->szPage); + void *pBuf2 = sqlite3_malloc(pWal->szPage); + if( pBuf1==0 || pBuf2==0 ){ + rc = SQLITE_NOMEM; + }else{ + pWal->ckptLock = 1; + SEH_TRY { + rc = walSnapshotRecover(pWal, pBuf1, pBuf2); } - - sqlite3_free(pBuf1); - sqlite3_free(pBuf2); + SEH_EXCEPT( rc = SQLITE_IOERR_IN_PAGE; ) + pWal->ckptLock = 0; } + + sqlite3_free(pBuf1); + sqlite3_free(pBuf2); walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1); } @@ -59927,28 +67236,43 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){ #endif /* SQLITE_ENABLE_SNAPSHOT */ /* -** Begin a read transaction on the database. -** -** This routine used to be called sqlite3OpenSnapshot() and with good reason: -** it takes a snapshot of the state of the WAL and wal-index for the current -** instant in time. The current thread will continue to use this snapshot. -** Other threads might append new content to the WAL and wal-index but -** that extra content is ignored by the current thread. -** -** If the database contents have changes since the previous read -** transaction, then *pChanged is set to 1 before returning. The -** Pager layer will use this to know that is cache is stale and -** needs to be flushed. +** This function does the work of sqlite3WalBeginReadTransaction() (see +** below). That function simply calls this one inside an SEH_TRY{...} block. */ -SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){ +static int walBeginReadTransaction(Wal *pWal, int *pChanged){ int rc; /* Return code */ int cnt = 0; /* Number of TryBeginRead attempts */ - #ifdef SQLITE_ENABLE_SNAPSHOT + int ckptLock = 0; int bChanged = 0; WalIndexHdr *pSnapshot = pWal->pSnapshot; - if( pSnapshot && memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){ - bChanged = 1; +#endif + + assert( pWal->ckptLock==0 ); + assert( pWal->nSehTry>0 ); + +#ifdef SQLITE_ENABLE_SNAPSHOT + if( pSnapshot ){ + if( memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){ + bChanged = 1; + } + + /* It is possible that there is a checkpointer thread running + ** concurrent with this code. If this is the case, it may be that the + ** checkpointer has already determined that it will checkpoint + ** snapshot X, where X is later in the wal file than pSnapshot, but + ** has not yet set the pInfo->nBackfillAttempted variable to indicate + ** its intent. To avoid the race condition this leads to, ensure that + ** there is no checkpointer process by taking a shared CKPT lock + ** before checking pInfo->nBackfillAttempted. */ + (void)walEnableBlocking(pWal); + rc = walLockShared(pWal, WAL_CKPT_LOCK); + walDisableBlocking(pWal); + + if( rc!=SQLITE_OK ){ + return rc; + } + ckptLock = 1; } #endif @@ -59981,51 +67305,68 @@ SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){ assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 ); assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame ); - /* It is possible that there is a checkpointer thread running - ** concurrent with this code. If this is the case, it may be that the - ** checkpointer has already determined that it will checkpoint - ** snapshot X, where X is later in the wal file than pSnapshot, but - ** has not yet set the pInfo->nBackfillAttempted variable to indicate - ** its intent. To avoid the race condition this leads to, ensure that - ** there is no checkpointer process by taking a shared CKPT lock - ** before checking pInfo->nBackfillAttempted. - ** - ** TODO: Does the aReadMark[] lock prevent a checkpointer from doing - ** this already? - */ - rc = walLockShared(pWal, WAL_CKPT_LOCK); - - if( rc==SQLITE_OK ){ - /* Check that the wal file has not been wrapped. Assuming that it has - ** not, also check that no checkpointer has attempted to checkpoint any - ** frames beyond pSnapshot->mxFrame. If either of these conditions are - ** true, return SQLITE_BUSY_SNAPSHOT. Otherwise, overwrite pWal->hdr - ** with *pSnapshot and set *pChanged as appropriate for opening the - ** snapshot. */ - if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt)) - && pSnapshot->mxFrame>=pInfo->nBackfillAttempted - ){ - assert( pWal->readLock>0 ); - memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr)); - *pChanged = bChanged; - }else{ - rc = SQLITE_BUSY_SNAPSHOT; - } - - /* Release the shared CKPT lock obtained above. */ - walUnlockShared(pWal, WAL_CKPT_LOCK); + /* Check that the wal file has not been wrapped. Assuming that it has + ** not, also check that no checkpointer has attempted to checkpoint any + ** frames beyond pSnapshot->mxFrame. If either of these conditions are + ** true, return SQLITE_ERROR_SNAPSHOT. Otherwise, overwrite pWal->hdr + ** with *pSnapshot and set *pChanged as appropriate for opening the + ** snapshot. */ + if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt)) + && pSnapshot->mxFrame>=pInfo->nBackfillAttempted + ){ + assert( pWal->readLock>0 ); + memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr)); + *pChanged = bChanged; + }else{ + rc = SQLITE_ERROR_SNAPSHOT; } + /* A client using a non-current snapshot may not ignore any frames + ** from the start of the wal file. This is because, for a system + ** where (minFrame < iSnapshot < maxFrame), a checkpointer may + ** have omitted to checkpoint a frame earlier than minFrame in + ** the file because there exists a frame after iSnapshot that + ** is the same database page. */ + pWal->minFrame = 1; if( rc!=SQLITE_OK ){ sqlite3WalEndReadTransaction(pWal); } } } + + /* Release the shared CKPT lock obtained above. */ + if( ckptLock ){ + assert( pSnapshot ); + walUnlockShared(pWal, WAL_CKPT_LOCK); + } #endif return rc; } +/* +** Begin a read transaction on the database. +** +** This routine used to be called sqlite3OpenSnapshot() and with good reason: +** it takes a snapshot of the state of the WAL and wal-index for the current +** instant in time. The current thread will continue to use this snapshot. +** Other threads might append new content to the WAL and wal-index but +** that extra content is ignored by the current thread. +** +** If the database contents have changes since the previous read +** transaction, then *pChanged is set to 1 before returning. The +** Pager layer will use this to know that its cache is stale and +** needs to be flushed. +*/ +SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){ + int rc; + SEH_TRY { + rc = walBeginReadTransaction(pWal, pChanged); + } + SEH_EXCEPT( rc = walHandleException(pWal); ) + return rc; +} + /* ** Finish with a read transaction. All this does is release the ** read-lock. @@ -60046,7 +67387,7 @@ SQLITE_PRIVATE void sqlite3WalEndReadTransaction(Wal *pWal){ ** Return SQLITE_OK if successful, or an error code if an error occurs. If an ** error does occur, the final value of *piRead is undefined. */ -SQLITE_PRIVATE int sqlite3WalFindFrame( +static int walFindFrame( Wal *pWal, /* WAL handle */ Pgno pgno, /* Database page number to read data for */ u32 *piRead /* OUT: Frame number (or zero) */ @@ -60061,8 +67402,8 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( /* If the "last page" field of the wal-index header snapshot is 0, then ** no data will be read from the wal under any circumstances. Return early - ** in this case as an optimization. Likewise, if pWal->readLock==0, - ** then the WAL is ignored by the reader so return early, as if the + ** in this case as an optimization. Likewise, if pWal->readLock==0, + ** then the WAL is ignored by the reader so return early, as if the ** WAL were empty. */ if( iLast==0 || (pWal->readLock==0 && pWal->bShmUnreliable==0) ){ @@ -60075,9 +67416,9 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( ** hash table (each hash table indexes up to HASHTABLE_NPAGE frames). ** ** This code might run concurrently to the code in walIndexAppend() - ** that adds entries to the wal-index (and possibly to this hash - ** table). This means the value just read from the hash - ** slot (aHash[iKey]) may have been added before or after the + ** that adds entries to the wal-index (and possibly to this hash + ** table). This means the value just read from the hash + ** slot (aHash[iKey]) may have been added before or after the ** current read transaction was opened. Values added after the ** read transaction was opened may have been written incorrectly - ** i.e. these slots may contain garbage data. However, we assume @@ -60085,39 +67426,41 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( ** opened remain unmodified. ** ** For the reasons above, the if(...) condition featured in the inner - ** loop of the following block is more stringent that would be required + ** loop of the following block is more stringent that would be required ** if we had exclusive access to the hash-table: ** - ** (aPgno[iFrame]==pgno): + ** (aPgno[iFrame]==pgno): ** This condition filters out normal hash-table collisions. ** - ** (iFrame<=iLast): + ** (iFrame<=iLast): ** This condition filters out entries that were added to the hash ** table after the current read-transaction had started. */ iMinHash = walFramePage(pWal->minFrame); for(iHash=walFramePage(iLast); iHash>=iMinHash; iHash--){ - volatile ht_slot *aHash; /* Pointer to hash table */ - volatile u32 *aPgno; /* Pointer to array of page numbers */ - u32 iZero; /* Frame number corresponding to aPgno[0] */ + WalHashLoc sLoc; /* Hash table location */ int iKey; /* Hash slot index */ int nCollide; /* Number of hash collisions remaining */ int rc; /* Error code */ + u32 iH; - rc = walHashGet(pWal, iHash, &aHash, &aPgno, &iZero); + rc = walHashGet(pWal, iHash, &sLoc); if( rc!=SQLITE_OK ){ return rc; } nCollide = HASHTABLE_NSLOT; - for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){ - u32 iFrame = aHash[iKey] + iZero; - if( iFrame<=iLast && iFrame>=pWal->minFrame && aPgno[aHash[iKey]]==pgno ){ + iKey = walHash(pgno); + SEH_INJECT_FAULT; + while( (iH = AtomicLoad(&sLoc.aHash[iKey]))!=0 ){ + u32 iFrame = iH + sLoc.iZero; + if( iFrame<=iLast && iFrame>=pWal->minFrame && sLoc.aPgno[iH-1]==pgno ){ assert( iFrame>iRead || CORRUPT_DB ); iRead = iFrame; } if( (nCollide--)==0 ){ return SQLITE_CORRUPT_BKPT; } + iKey = walNextHash(iKey); } if( iRead ) break; } @@ -60144,6 +67487,30 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( return SQLITE_OK; } +/* +** Search the wal file for page pgno. If found, set *piRead to the frame that +** contains the page. Otherwise, if pgno is not in the wal file, set *piRead +** to zero. +** +** Return SQLITE_OK if successful, or an error code if an error occurs. If an +** error does occur, the final value of *piRead is undefined. +** +** The difference between this function and walFindFrame() is that this +** function wraps walFindFrame() in an SEH_TRY{...} block. +*/ +SQLITE_PRIVATE int sqlite3WalFindFrame( + Wal *pWal, /* WAL handle */ + Pgno pgno, /* Database page number to read data for */ + u32 *piRead /* OUT: Frame number (or zero) */ +){ + int rc; + SEH_TRY { + rc = walFindFrame(pWal, pgno, piRead); + } + SEH_EXCEPT( rc = SQLITE_IOERR_IN_PAGE; ) + return rc; +} + /* ** Read the contents of frame iRead from the wal file into buffer pOut ** (which is nOut bytes in size). Return SQLITE_OK if successful, or an @@ -60166,7 +67533,7 @@ SQLITE_PRIVATE int sqlite3WalReadFrame( return sqlite3OsRead(pWal->pWalFd, pOut, (nOut>sz ? sz : nOut), iOffset); } -/* +/* ** Return the size of the database in pages (or zero, if unknown). */ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){ @@ -60177,7 +67544,7 @@ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){ } -/* +/* ** This function starts a write transaction on the WAL. ** ** A read transaction must have already been started by a prior call @@ -60193,6 +67560,16 @@ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){ SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){ int rc; +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + /* If the write-lock is already held, then it was obtained before the + ** read-transaction was even opened, making this call a no-op. + ** Return early. */ + if( pWal->writeLock ){ + assert( !memcmp(&pWal->hdr,(void *)walIndexHdr(pWal),sizeof(WalIndexHdr)) ); + return SQLITE_OK; + } +#endif + /* Cannot start a write transaction without first holding a read ** transaction. */ assert( pWal->readLock>=0 ); @@ -60215,12 +67592,17 @@ SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){ ** time the read transaction on this connection was started, then ** the write is disallowed. */ - if( memcmp(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr))!=0 ){ + SEH_TRY { + if( memcmp(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr))!=0 ){ + rc = SQLITE_BUSY_SNAPSHOT; + } + } + SEH_EXCEPT( rc = SQLITE_IOERR_IN_PAGE; ) + + if( rc!=SQLITE_OK ){ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1); pWal->writeLock = 0; - rc = SQLITE_BUSY_SNAPSHOT; } - return rc; } @@ -60255,39 +67637,42 @@ SQLITE_PRIVATE int sqlite3WalUndo(Wal *pWal, int (*xUndo)(void *, Pgno), void *p if( ALWAYS(pWal->writeLock) ){ Pgno iMax = pWal->hdr.mxFrame; Pgno iFrame; - - /* Restore the clients cache of the wal-index header to the state it - ** was in before the client began writing to the database. - */ - memcpy(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr)); - for(iFrame=pWal->hdr.mxFrame+1; - ALWAYS(rc==SQLITE_OK) && iFrame<=iMax; - iFrame++ - ){ - /* This call cannot fail. Unless the page for which the page number - ** is passed as the second argument is (a) in the cache and - ** (b) has an outstanding reference, then xUndo is either a no-op - ** (if (a) is false) or simply expels the page from the cache (if (b) - ** is false). - ** - ** If the upper layer is doing a rollback, it is guaranteed that there - ** are no outstanding references to any page other than page 1. And - ** page 1 is never written to the log until the transaction is - ** committed. As a result, the call to xUndo may not fail. + SEH_TRY { + /* Restore the clients cache of the wal-index header to the state it + ** was in before the client began writing to the database. */ - assert( walFramePgno(pWal, iFrame)!=1 ); - rc = xUndo(pUndoCtx, walFramePgno(pWal, iFrame)); + memcpy(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr)); + + for(iFrame=pWal->hdr.mxFrame+1; + ALWAYS(rc==SQLITE_OK) && iFrame<=iMax; + iFrame++ + ){ + /* This call cannot fail. Unless the page for which the page number + ** is passed as the second argument is (a) in the cache and + ** (b) has an outstanding reference, then xUndo is either a no-op + ** (if (a) is false) or simply expels the page from the cache (if (b) + ** is false). + ** + ** If the upper layer is doing a rollback, it is guaranteed that there + ** are no outstanding references to any page other than page 1. And + ** page 1 is never written to the log until the transaction is + ** committed. As a result, the call to xUndo may not fail. + */ + assert( walFramePgno(pWal, iFrame)!=1 ); + rc = xUndo(pUndoCtx, walFramePgno(pWal, iFrame)); + } + if( iMax!=pWal->hdr.mxFrame ) walCleanupHash(pWal); } - if( iMax!=pWal->hdr.mxFrame ) walCleanupHash(pWal); + SEH_EXCEPT( rc = SQLITE_IOERR_IN_PAGE; ) } return rc; } -/* -** Argument aWalData must point to an array of WAL_SAVEPOINT_NDATA u32 -** values. This function populates the array with values required to -** "rollback" the write position of the WAL handle back to the current +/* +** Argument aWalData must point to an array of WAL_SAVEPOINT_NDATA u32 +** values. This function populates the array with values required to +** "rollback" the write position of the WAL handle back to the current ** point in the event of a savepoint rollback (via WalSavepointUndo()). */ SQLITE_PRIVATE void sqlite3WalSavepoint(Wal *pWal, u32 *aWalData){ @@ -60298,7 +67683,7 @@ SQLITE_PRIVATE void sqlite3WalSavepoint(Wal *pWal, u32 *aWalData){ aWalData[3] = pWal->nCkpt; } -/* +/* ** Move the write position of the WAL back to the point identified by ** the values in the aWalData[] array. aWalData must point to an array ** of WAL_SAVEPOINT_NDATA u32 values that has been previously populated @@ -60323,7 +67708,10 @@ SQLITE_PRIVATE int sqlite3WalSavepointUndo(Wal *pWal, u32 *aWalData){ pWal->hdr.mxFrame = aWalData[0]; pWal->hdr.aFrameCksum[0] = aWalData[1]; pWal->hdr.aFrameCksum[1] = aWalData[2]; - walCleanupHash(pWal); + SEH_TRY { + walCleanupHash(pWal); + } + SEH_EXCEPT( rc = SQLITE_IOERR_IN_PAGE; ) } return rc; @@ -60438,11 +67826,7 @@ static int walWriteOneFrame( int rc; /* Result code from subfunctions */ void *pData; /* Data actually written */ u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */ -#if defined(SQLITE_HAS_CODEC) - if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM_BKPT; -#else pData = pPage->pData; -#endif walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame); rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset); if( rc ) return rc; @@ -60504,11 +67888,11 @@ static int walRewriteChecksums(Wal *pWal, u32 iLast){ return rc; } -/* +/* ** Write a set of frames to the log. The caller must hold the write-lock ** on the log file (obtained using sqlite3WalBeginWriteTransaction()). */ -SQLITE_PRIVATE int sqlite3WalFrames( +static int walFrames( Wal *pWal, /* Wal handle to write to */ int szPage, /* Database page-size in bytes */ PgHdr *pList, /* List of dirty pages to write */ @@ -60571,7 +67955,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( walChecksumBytes(1, aWalHdr, WAL_HDRSIZE-2*4, 0, aCksum); sqlite3Put4byte(&aWalHdr[24], aCksum[0]); sqlite3Put4byte(&aWalHdr[28], aCksum[1]); - + pWal->szPage = szPage; pWal->hdr.bigEndCksum = SQLITE_BIGENDIAN; pWal->hdr.aFrameCksum[0] = aCksum[0]; @@ -60596,7 +67980,9 @@ SQLITE_PRIVATE int sqlite3WalFrames( if( rc ) return rc; } } - assert( (int)pWal->szPage==szPage ); + if( (int)pWal->szPage!=szPage ){ + return SQLITE_CORRUPT_BKPT; /* TH3 test case: cov1/corrupt155.test */ + } /* Setup information needed to write frames into the WAL */ w.pWal = pWal; @@ -60613,11 +67999,11 @@ SQLITE_PRIVATE int sqlite3WalFrames( /* Check if this page has already been written into the wal file by ** the current transaction. If so, overwrite the existing frame and - ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that + ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that ** checksums must be recomputed when the transaction is committed. */ if( iFirst && (p->pDirty || isCommit==0) ){ u32 iWrite = 0; - VVA_ONLY(rc =) sqlite3WalFindFrame(pWal, p->pgno, &iWrite); + VVA_ONLY(rc =) walFindFrame(pWal, p->pgno, &iWrite); assert( rc==SQLITE_OK || iWrite==0 ); if( iWrite>=iFirst ){ i64 iOff = walFrameOffset(iWrite, szPage) + WAL_FRAME_HDRSIZE; @@ -60625,11 +68011,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( if( pWal->iReCksum==0 || iWriteiReCksum ){ pWal->iReCksum = iWrite; } -#if defined(SQLITE_HAS_CODEC) - if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM; -#else pData = p->pData; -#endif rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff); if( rc ) return rc; p->flags &= ~PGHDR_WAL_APPEND; @@ -60679,6 +68061,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( if( rc ) return rc; iOffset += szFrame; nExtra++; + assert( pLast!=0 ); } } if( bSync ){ @@ -60700,7 +68083,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( pWal->truncateOnCommit = 0; } - /* Append data to the wal-index. It is not necessary to lock the + /* Append data to the wal-index. It is not necessary to lock the ** wal-index to do this as the SQLITE_SHM_WRITE lock held on the wal-index ** guarantees that there are no other writers, and no data that may ** be in use by existing readers is being overwritten. @@ -60711,6 +68094,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( iFrame++; rc = walIndexAppend(pWal, iFrame, p->pgno); } + assert( pLast!=0 || nExtra==0 ); while( rc==SQLITE_OK && nExtra>0 ){ iFrame++; nExtra--; @@ -60738,7 +68122,30 @@ SQLITE_PRIVATE int sqlite3WalFrames( return rc; } -/* +/* +** Write a set of frames to the log. The caller must hold the write-lock +** on the log file (obtained using sqlite3WalBeginWriteTransaction()). +** +** The difference between this function and walFrames() is that this +** function wraps walFrames() in an SEH_TRY{...} block. +*/ +SQLITE_PRIVATE int sqlite3WalFrames( + Wal *pWal, /* Wal handle to write to */ + int szPage, /* Database page-size in bytes */ + PgHdr *pList, /* List of dirty pages to write */ + Pgno nTruncate, /* Database size after this commit */ + int isCommit, /* True if this is a commit */ + int sync_flags /* Flags to pass to OsSync() (or 0) */ +){ + int rc; + SEH_TRY { + rc = walFrames(pWal, szPage, pList, nTruncate, isCommit, sync_flags); + } + SEH_EXCEPT( rc = walHandleException(pWal); ) + return rc; +} + +/* ** This routine is called to implement sqlite3_wal_checkpoint() and ** related interfaces. ** @@ -60775,68 +68182,78 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint( if( pWal->readOnly ) return SQLITE_READONLY; WALTRACE(("WAL%p: checkpoint begins\n", pWal)); - /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive - ** "checkpoint" lock on the database file. */ - rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1); - if( rc ){ - /* EVIDENCE-OF: R-10421-19736 If any other process is running a - ** checkpoint operation at the same time, the lock cannot be obtained and - ** SQLITE_BUSY is returned. - ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured, - ** it will not be invoked in this case. - */ - testcase( rc==SQLITE_BUSY ); - testcase( xBusy!=0 ); - return rc; - } - pWal->ckptLock = 1; + /* Enable blocking locks, if possible. If blocking locks are successfully + ** enabled, set xBusy2=0 so that the busy-handler is never invoked. */ + sqlite3WalDb(pWal, db); + (void)walEnableBlocking(pWal); - /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and - ** TRUNCATE modes also obtain the exclusive "writer" lock on the database - ** file. - ** - ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained - ** immediately, and a busy-handler is configured, it is invoked and the - ** writer lock retried until either the busy-handler returns 0 or the - ** lock is successfully obtained. + /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive + ** "checkpoint" lock on the database file. + ** EVIDENCE-OF: R-10421-19736 If any other process is running a + ** checkpoint operation at the same time, the lock cannot be obtained and + ** SQLITE_BUSY is returned. + ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured, + ** it will not be invoked in this case. */ - if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){ - rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1); - if( rc==SQLITE_OK ){ - pWal->writeLock = 1; - }else if( rc==SQLITE_BUSY ){ - eMode2 = SQLITE_CHECKPOINT_PASSIVE; - xBusy2 = 0; - rc = SQLITE_OK; + rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1); + testcase( rc==SQLITE_BUSY ); + testcase( rc!=SQLITE_OK && xBusy2!=0 ); + if( rc==SQLITE_OK ){ + pWal->ckptLock = 1; + + /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and + ** TRUNCATE modes also obtain the exclusive "writer" lock on the database + ** file. + ** + ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained + ** immediately, and a busy-handler is configured, it is invoked and the + ** writer lock retried until either the busy-handler returns 0 or the + ** lock is successfully obtained. + */ + if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){ + rc = walBusyLock(pWal, xBusy2, pBusyArg, WAL_WRITE_LOCK, 1); + if( rc==SQLITE_OK ){ + pWal->writeLock = 1; + }else if( rc==SQLITE_BUSY ){ + eMode2 = SQLITE_CHECKPOINT_PASSIVE; + xBusy2 = 0; + rc = SQLITE_OK; + } } } + /* Read the wal-index header. */ - if( rc==SQLITE_OK ){ - rc = walIndexReadHdr(pWal, &isChanged); - if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){ - sqlite3OsUnfetch(pWal->pDbFd, 0, 0); - } - } - - /* Copy data from the log to the database file. */ - if( rc==SQLITE_OK ){ - - if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){ - rc = SQLITE_CORRUPT_BKPT; - }else{ - rc = walCheckpoint(pWal, db, eMode2, xBusy2, pBusyArg, sync_flags, zBuf); - } - - /* If no error occurred, set the output variables. */ - if( rc==SQLITE_OK || rc==SQLITE_BUSY ){ - if( pnLog ) *pnLog = (int)pWal->hdr.mxFrame; - if( pnCkpt ) *pnCkpt = (int)(walCkptInfo(pWal)->nBackfill); + SEH_TRY { + if( rc==SQLITE_OK ){ + walDisableBlocking(pWal); + rc = walIndexReadHdr(pWal, &isChanged); + (void)walEnableBlocking(pWal); + if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){ + sqlite3OsUnfetch(pWal->pDbFd, 0, 0); + } + } + + /* Copy data from the log to the database file. */ + if( rc==SQLITE_OK ){ + if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){ + rc = SQLITE_CORRUPT_BKPT; + }else{ + rc = walCheckpoint(pWal, db, eMode2, xBusy2, pBusyArg, sync_flags,zBuf); + } + + /* If no error occurred, set the output variables. */ + if( rc==SQLITE_OK || rc==SQLITE_BUSY ){ + if( pnLog ) *pnLog = (int)pWal->hdr.mxFrame; + SEH_INJECT_FAULT; + if( pnCkpt ) *pnCkpt = (int)(walCkptInfo(pWal)->nBackfill); + } } } + SEH_EXCEPT( rc = walHandleException(pWal); ) if( isChanged ){ - /* If a new wal-index header was loaded before the checkpoint was + /* If a new wal-index header was loaded before the checkpoint was ** performed, then the pager-cache associated with pWal is now ** out of date. So zero the cached wal-index header to ensure that ** next time the pager opens a snapshot on this database it knows that @@ -60845,11 +68262,19 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint( memset(&pWal->hdr, 0, sizeof(WalIndexHdr)); } + walDisableBlocking(pWal); + sqlite3WalDb(pWal, 0); + /* Release the locks. */ sqlite3WalEndWriteTransaction(pWal); - walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1); - pWal->ckptLock = 0; + if( pWal->ckptLock ){ + walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1); + pWal->ckptLock = 0; + } WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok")); +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY; +#endif return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc); } @@ -60879,7 +68304,7 @@ SQLITE_PRIVATE int sqlite3WalCallback(Wal *pWal){ ** operation must occur while the pager is still holding the exclusive ** lock on the main database file. ** -** If op is one, then change from locking_mode=NORMAL into +** If op is one, then change from locking_mode=NORMAL into ** locking_mode=EXCLUSIVE. This means that the pWal->readLock must ** be released. Return 1 if the transition is made and 0 if the ** WAL is already in exclusive-locking mode - meaning that this @@ -60896,13 +68321,15 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op){ assert( pWal->writeLock==0 ); assert( pWal->exclusiveMode!=WAL_HEAPMEMORY_MODE || op==-1 ); - /* pWal->readLock is usually set, but might be -1 if there was a - ** prior error while attempting to acquire are read-lock. This cannot + /* pWal->readLock is usually set, but might be -1 if there was a + ** prior error while attempting to acquire are read-lock. This cannot ** happen if the connection is actually in exclusive mode (as no xShmLock ** locks are taken in this case). Nor should the pager attempt to ** upgrade to exclusive-mode following such an error. */ +#ifndef SQLITE_USE_SEH assert( pWal->readLock>=0 || pWal->lockError ); +#endif assert( pWal->readLock>=0 || (op<=0 && pWal->exclusiveMode==0) ); if( op==0 ){ @@ -60928,10 +68355,10 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op){ return rc; } -/* +/* ** Return true if the argument is non-NULL and the WAL module is using ** heap-memory for the wal-index. Otherwise, if the argument is NULL or the -** WAL module is using shared-memory, return false. +** WAL module is using shared-memory, return false. */ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal){ return (pWal && pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ); @@ -60966,11 +68393,14 @@ SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapsho /* Try to open on pSnapshot when the next read-transaction starts */ -SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot){ +SQLITE_PRIVATE void sqlite3WalSnapshotOpen( + Wal *pWal, + sqlite3_snapshot *pSnapshot +){ pWal->pSnapshot = (WalIndexHdr*)pSnapshot; } -/* +/* ** Return a +ve value if snapshot p1 is newer than p2. A -ve value if ** p1 is older than p2 and zero if p1 and p2 are the same snapshot. */ @@ -60986,6 +68416,46 @@ SQLITE_API int sqlite3_snapshot_cmp(sqlite3_snapshot *p1, sqlite3_snapshot *p2){ if( pHdr1->mxFrame>pHdr2->mxFrame ) return +1; return 0; } + +/* +** The caller currently has a read transaction open on the database. +** This function takes a SHARED lock on the CHECKPOINTER slot and then +** checks if the snapshot passed as the second argument is still +** available. If so, SQLITE_OK is returned. +** +** If the snapshot is not available, SQLITE_ERROR is returned. Or, if +** the CHECKPOINTER lock cannot be obtained, SQLITE_BUSY. If any error +** occurs (any value other than SQLITE_OK is returned), the CHECKPOINTER +** lock is released before returning. +*/ +SQLITE_PRIVATE int sqlite3WalSnapshotCheck(Wal *pWal, sqlite3_snapshot *pSnapshot){ + int rc; + SEH_TRY { + rc = walLockShared(pWal, WAL_CKPT_LOCK); + if( rc==SQLITE_OK ){ + WalIndexHdr *pNew = (WalIndexHdr*)pSnapshot; + if( memcmp(pNew->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt)) + || pNew->mxFramenBackfillAttempted + ){ + rc = SQLITE_ERROR_SNAPSHOT; + walUnlockShared(pWal, WAL_CKPT_LOCK); + } + } + } + SEH_EXCEPT( rc = walHandleException(pWal); ) + return rc; +} + +/* +** Release a lock obtained by an earlier successful call to +** sqlite3WalSnapshotCheck(). +*/ +SQLITE_PRIVATE void sqlite3WalSnapshotUnlock(Wal *pWal){ + assert( pWal ); + walUnlockShared(pWal, WAL_CKPT_LOCK); +} + + #endif /* SQLITE_ENABLE_SNAPSHOT */ #ifdef SQLITE_ENABLE_ZIPVFS @@ -61060,16 +68530,16 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){ ** on Ptr(N) and its subpages have values greater than Key(N-1). And ** so forth. ** -** Finding a particular key requires reading O(log(M)) pages from the +** Finding a particular key requires reading O(log(M)) pages from the ** disk where M is the number of entries in the tree. ** -** In this implementation, a single file can hold one or more separate +** In this implementation, a single file can hold one or more separate ** BTrees. Each BTree is identified by the index of its root page. The ** key and data for any entry are combined to form the "payload". A ** fixed amount of payload can be carried directly on the database ** page. If the payload is larger than the preset amount then surplus ** bytes are stored on overflow pages. The payload for an entry -** and the preceding pointer are combined to form a "Cell". Each +** and the preceding pointer are combined to form a "Cell". Each ** page has a small header which contains the Ptr(N) pointer and other ** information such as the size of key and data. ** @@ -61199,11 +68669,11 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){ ** contiguous or in order, but cell pointers are contiguous and in order. ** ** Cell content makes use of variable length integers. A variable -** length integer is 1 to 9 bytes where the lower 7 bits of each +** length integer is 1 to 9 bytes where the lower 7 bits of each ** byte are used. The integer consists of all bytes that have bit 8 set and ** the first byte with bit 8 clear. The most significant byte of the integer ** appears first. A variable-length integer may not be more than 9 bytes long. -** As a special case, all 8 bytes of the 9th byte are used as data. This +** As a special case, all 8 bits of the 9th byte are used as data. This ** allows a 64-bit integer to be encoded in 9 bytes. ** ** 0x00 becomes 0x00000000 @@ -61211,7 +68681,7 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){ ** 0x81 0x00 becomes 0x00000080 ** 0x82 0x00 becomes 0x00000100 ** 0x80 0x7f becomes 0x0000007f -** 0x8a 0x91 0xd1 0xac 0x78 becomes 0x12345678 +** 0x81 0x91 0xd1 0xac 0x78 becomes 0x12345678 ** 0x81 0x81 0x81 0x81 0x01 becomes 0x10204081 ** ** Variable length integers are used for rowids and to hold the number of @@ -61272,7 +68742,7 @@ typedef struct CellInfo CellInfo; ** -DSQLITE_FILE_HEADER="..." on the compiler command-line. The ** header must be exactly 16 bytes including the zero-terminator so ** the string itself should be 15 characters long. If you change -** the header, then your custom library will not be able to read +** the header, then your custom library will not be able to read ** databases generated by the standard tools and the standard tools ** will not be able to read databases created by your custom library. */ @@ -61294,7 +68764,7 @@ typedef struct CellInfo CellInfo; ** page that has been loaded into memory. The information in this object ** is derived from the raw on-disk page content. ** -** As each database page is loaded into memory, the pager allocats an +** As each database page is loaded into memory, the pager allocates an ** instance of this object and zeros the first 8 bytes. (This is the ** "extra" information associated with each page of the pager.) ** @@ -61303,7 +68773,6 @@ typedef struct CellInfo CellInfo; */ struct MemPage { u8 isInit; /* True if previously initialized. MUST BE FIRST! */ - u8 bBusy; /* Prevent endless loops on corrupt database files */ u8 intKey; /* True if table b-trees. False for index b-trees */ u8 intKeyLeaf; /* True if the leaf of an intKey table */ Pgno pgno; /* Page number for this page */ @@ -61317,7 +68786,7 @@ struct MemPage { u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */ u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */ u16 cellOffset; /* Index in aData of first cell pointer */ - u16 nFree; /* Number of free bytes on the page */ + int nFree; /* Number of free bytes on the page. -1 for unknown */ u16 nCell; /* Number of cells on this page, local and ovfl */ u16 maskPage; /* Mask for page offset */ u16 aiOvfl[4]; /* Insert the i-th overflow cell before the aiOvfl-th @@ -61325,7 +68794,9 @@ struct MemPage { u8 *apOvfl[4]; /* Pointers to the body of overflow cells */ BtShared *pBt; /* Pointer to BtShared that this page is part of */ u8 *aData; /* Pointer to disk image of the page data */ - u8 *aDataEnd; /* One byte past the end of usable data */ + u8 *aDataEnd; /* One byte past the end of the entire page - not just + ** the usable space, the entire page. Used to prevent + ** corruption-induced buffer overflow. */ u8 *aCellIdx; /* The cell index area */ u8 *aDataOfst; /* Same as aData for leaves. aData+4 for interior */ DbPage *pDbPage; /* Pager page handle */ @@ -61335,7 +68806,7 @@ struct MemPage { /* ** A linked list of the following structures is stored at BtShared.pLock. -** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor +** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor ** is opened on the table with root page BtShared.iTable. Locks are removed ** from this list when a transaction is committed or rolled back, or when ** a btree handle is closed. @@ -61359,7 +68830,7 @@ struct BtLock { ** see the internals of this structure and only deals with pointers to ** this structure. ** -** For some database files, the same underlying database cache might be +** For some database files, the same underlying database cache might be ** shared between multiple connections. In that case, each connection ** has it own instance of this object. But each instance of this object ** points to the same BtShared object. The database cache and the @@ -61367,7 +68838,7 @@ struct BtLock { ** the BtShared object. ** ** All fields in this structure are accessed under sqlite3.mutex. -** The pBt pointer itself may not be changed while there exists cursors +** The pBt pointer itself may not be changed while there exists cursors ** in the referenced BtShared that point back to this Btree since those ** cursors have to go through this Btree to find their BtShared and ** they often do so without holding sqlite3.mutex. @@ -61381,9 +68852,12 @@ struct Btree { u8 hasIncrblobCur; /* True if there are one or more Incrblob cursors */ int wantToLock; /* Number of nested calls to sqlite3BtreeEnter() */ int nBackup; /* Number of backup operations reading this btree */ - u32 iDataVersion; /* Combines with pBt->pPager->iDataVersion */ + u32 iBDataVersion; /* Combines with pBt->pPager->iDataVersion */ Btree *pNext; /* List of other sharable Btrees from the same db */ Btree *pPrev; /* Back pointer of the same list */ +#ifdef SQLITE_DEBUG + u64 nSeek; /* Calls to sqlite3BtreeMovetoUnpacked() */ +#endif #ifndef SQLITE_OMIT_SHARED_CACHE BtLock lock; /* Object used to lock page 1 */ #endif @@ -61395,14 +68869,28 @@ struct Btree { ** If the shared-data extension is enabled, there may be multiple users ** of the Btree structure. At most one of these may open a write transaction, ** but any number may have active read transactions. +** +** These values must match SQLITE_TXN_NONE, SQLITE_TXN_READ, and +** SQLITE_TXN_WRITE */ #define TRANS_NONE 0 #define TRANS_READ 1 #define TRANS_WRITE 2 +#if TRANS_NONE!=SQLITE_TXN_NONE +# error wrong numeric code for no-transaction +#endif +#if TRANS_READ!=SQLITE_TXN_READ +# error wrong numeric code for read-transaction +#endif +#if TRANS_WRITE!=SQLITE_TXN_WRITE +# error wrong numeric code for write-transaction +#endif + + /* ** An instance of this object represents a single database file. -** +** ** A single database file can be in use at the same time by two ** or more database connections. When two or more connections are ** sharing the same database file, each connection has it own @@ -61412,7 +68900,7 @@ struct Btree { ** ** Fields in this structure are accessed under the BtShared.mutex ** mutex, except for nRef and pNext which are accessed under the -** global SQLITE_MUTEX_STATIC_MASTER mutex. The pPager field +** global SQLITE_MUTEX_STATIC_MAIN mutex. The pPager field ** may not be modified once it is initially set as long as nRef>0. ** The pSchema field may be set once under BtShared.mutex and ** thereafter is unchanged as long as nRef>0. @@ -61448,9 +68936,7 @@ struct BtShared { #endif u8 inTransaction; /* Transaction state */ u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */ -#ifdef SQLITE_HAS_CODEC - u8 optimalReserve; /* Desired amount of reserved space per page */ -#endif + u8 nReserveWanted; /* Desired number of extra bytes per page */ u16 btsFlags; /* Boolean parameters. See BTS_* macros below */ u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */ u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */ @@ -61471,6 +68957,7 @@ struct BtShared { Btree *pWriter; /* Btree with currently open write transaction */ #endif u8 *pTmpSpace; /* Temp space sufficient to hold a single cell */ + int nPreformatSize; /* Size of last cell written by TransferRow() */ }; /* @@ -61522,12 +69009,19 @@ struct CellInfo { ** particular database connection identified BtCursor.pBtree.db. ** ** Fields in this structure are accessed under the BtShared.mutex -** found at self->pBt->mutex. +** found at self->pBt->mutex. ** ** skipNext meaning: -** eState==SKIPNEXT && skipNext>0: Next sqlite3BtreeNext() is no-op. -** eState==SKIPNEXT && skipNext<0: Next sqlite3BtreePrevious() is no-op. -** eState==FAULT: Cursor fault with skipNext as error code. +** The meaning of skipNext depends on the value of eState: +** +** eState Meaning of skipNext +** VALID skipNext is meaningless and is ignored +** INVALID skipNext is meaningless and is ignored +** SKIPNEXT sqlite3BtreeNext() is a no-op if skipNext>0 and +** sqlite3BtreePrevious() is no-op if skipNext<0. +** REQUIRESEEK restoreCursorPosition() restores the cursor to +** eState=SKIPNEXT if skipNext!=0 +** FAULT skipNext holds the cursor fault error code. */ struct BtCursor { u8 eState; /* One of the CURSOR_XXX constants (see below) */ @@ -61563,15 +69057,16 @@ struct BtCursor { #define BTCF_WriteFlag 0x01 /* True if a write cursor */ #define BTCF_ValidNKey 0x02 /* True if info.nKey is valid */ #define BTCF_ValidOvfl 0x04 /* True if aOverflow is valid */ -#define BTCF_AtLast 0x08 /* Cursor is pointing ot the last entry */ +#define BTCF_AtLast 0x08 /* Cursor is pointing to the last entry */ #define BTCF_Incrblob 0x10 /* True if an incremental I/O handle */ #define BTCF_Multiple 0x20 /* Maybe another cursor on the same btree */ +#define BTCF_Pinned 0x40 /* Cursor is busy and cannot be moved */ /* ** Potential values for BtCursor.eState. ** ** CURSOR_INVALID: -** Cursor does not point to a valid entry. This can happen (for example) +** Cursor does not point to a valid entry. This can happen (for example) ** because the table is empty or because BtreeCursorFirst() has not been ** called. ** @@ -61584,9 +69079,9 @@ struct BtCursor { ** operation should be a no-op. ** ** CURSOR_REQUIRESEEK: -** The table that this cursor was opened on still exists, but has been +** The table that this cursor was opened on still exists, but has been ** modified since the cursor was last used. The cursor position is saved -** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in +** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in ** this state, restoreCursorPosition() can be called to attempt to ** seek the cursor to the saved position. ** @@ -61603,13 +69098,13 @@ struct BtCursor { #define CURSOR_REQUIRESEEK 3 #define CURSOR_FAULT 4 -/* +/* ** The database page the PENDING_BYTE occupies. This page is never used. */ -# define PENDING_BYTE_PAGE(pBt) PAGER_MJ_PGNO(pBt) +#define PENDING_BYTE_PAGE(pBt) ((Pgno)((PENDING_BYTE/((pBt)->pageSize))+1)) /* -** These macros define the location of the pointer-map entry for a +** These macros define the location of the pointer-map entry for a ** database page. The first argument to each is the number of usable ** bytes on each page of the database (often 1024). The second is the ** page number to look up in the pointer map. @@ -61644,10 +69139,10 @@ struct BtCursor { ** PTRMAP_ROOTPAGE: The database page is a root-page. The page-number is not ** used in this case. ** -** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number +** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number ** is not used in this case. ** -** PTRMAP_OVERFLOW1: The database page is the first page in a list of +** PTRMAP_OVERFLOW1: The database page is the first page in a list of ** overflow pages. The page number identifies the page that ** contains the cell with a pointer to this overflow page. ** @@ -61669,31 +69164,31 @@ struct BtCursor { */ #define btreeIntegrity(p) \ assert( p->pBt->inTransaction!=TRANS_NONE || p->pBt->nTransaction==0 ); \ - assert( p->pBt->inTransaction>=p->inTrans ); + assert( p->pBt->inTransaction>=p->inTrans ); /* ** The ISAUTOVACUUM macro is used within balance_nonroot() to determine ** if the database supports auto-vacuum or not. Because it is used -** within an expression that is an argument to another macro +** within an expression that is an argument to another macro ** (sqliteMallocRaw), it is not possible to use conditional compilation. ** So, this macro is defined instead. */ #ifndef SQLITE_OMIT_AUTOVACUUM -#define ISAUTOVACUUM (pBt->autoVacuum) +#define ISAUTOVACUUM(pBt) (pBt->autoVacuum) #else -#define ISAUTOVACUUM 0 +#define ISAUTOVACUUM(pBt) 0 #endif /* -** This structure is passed around through all the sanity checking routines -** in order to keep track of some global state information. +** This structure is passed around through all the PRAGMA integrity_check +** checking routines in order to keep track of some global state information. ** ** The aRef[] array is allocated so that there is 1 bit for each page in ** the database. As the integrity-check proceeds, for each page used in -** the database the corresponding bit is set. This allows integrity-check to -** detect pages that are used twice and orphaned pages (both of which +** the database the corresponding bit is set. This allows integrity-check to +** detect pages that are used twice and orphaned pages (both of which ** indicate corruption). */ typedef struct IntegrityCk IntegrityCk; @@ -61704,11 +69199,15 @@ struct IntegrityCk { Pgno nPage; /* Number of pages in the database */ int mxErr; /* Stop accumulating errors when this reaches zero */ int nErr; /* Number of messages written to zErrMsg so far */ - int mallocFailed; /* A memory allocation error has occurred */ + int rc; /* SQLITE_OK, SQLITE_NOMEM, or SQLITE_INTERRUPT */ + u32 nStep; /* Number of steps into the integrity_check process */ const char *zPfx; /* Error message prefix */ - int v1, v2; /* Values for up to two %d fields in zPfx */ + Pgno v0; /* Value for first %u substitution in zPfx (root page) */ + Pgno v1; /* Value for second %u substitution in zPfx (current pg) */ + int v2; /* Value for third %d substitution in zPfx */ StrAccum errMsg; /* Accumulate the error message text here */ u32 *heap; /* Min-heap used for analyzing cell coverage */ + sqlite3 *db; /* Database connection running the check */ }; /* @@ -61721,7 +69220,7 @@ struct IntegrityCk { /* ** get2byteAligned(), unlike get2byte(), requires that its argument point to a -** two-byte aligned address. get2bytea() is only used for accessing the +** two-byte aligned address. get2byteAligned() is only used for accessing the ** cell addresses in a btree header. */ #if SQLITE_BYTEORDER==4321 @@ -61898,7 +69397,7 @@ SQLITE_PRIVATE int sqlite3BtreeHoldsMutex(Btree *p){ ** ** There is a corresponding leave-all procedures. ** -** Enter the mutexes in accending order by BtShared pointer address +** Enter the mutexes in ascending order by BtShared pointer address ** to avoid the possibility of deadlock when two threads with ** two or more btrees in common both try to lock all their btrees ** at the same instant. @@ -61972,6 +69471,7 @@ SQLITE_PRIVATE int sqlite3BtreeHoldsAllMutexes(sqlite3 *db){ SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){ Btree *p; assert( db!=0 ); + if( db->pVfs==0 && db->nDb==0 ) return 1; if( pSchema ) iDb = sqlite3SchemaToIndex(db, pSchema); assert( iDb>=0 && iDbnDb ); if( !sqlite3_mutex_held(db->mutex) ) return 0; @@ -62009,10 +69509,10 @@ SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){ #ifndef SQLITE_OMIT_INCRBLOB /* -** Enter a mutex on a Btree given a cursor owned by that Btree. +** Enter a mutex on a Btree given a cursor owned by that Btree. ** -** These entry points are used by incremental I/O only. Enter() is required -** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not +** These entry points are used by incremental I/O only. Enter() is required +** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not ** the build is threadsafe. Leave() is only required by threadsafe builds. */ SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){ @@ -62029,6 +69529,7 @@ SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){ /************** End of btmutex.c *********************************************/ /************** Begin file btree.c *******************************************/ + /* ** 2004 April 6 ** @@ -62082,7 +69583,7 @@ int sqlite3BtreeTrace=1; /* True to enable tracing */ #define BTALLOC_LE 2 /* Allocate any page <= the parameter */ /* -** Macro IfNotOmitAV(x) returns (x) if SQLITE_OMIT_AUTOVACUUM is not +** Macro IfNotOmitAV(x) returns (x) if SQLITE_OMIT_AUTOVACUUM is not ** defined, or 0 if it is. For example: ** ** bIncrVacuum = IfNotOmitAV(pBtShared->incrVacuum); @@ -62097,10 +69598,10 @@ int sqlite3BtreeTrace=1; /* True to enable tracing */ /* ** A list of BtShared objects that are eligible for participation ** in shared cache. This variable has file scope during normal builds, -** but the test harness needs to access it so we make it global for +** but the test harness needs to access it so we make it global for ** test builds. ** -** Access to this variable is protected by SQLITE_MUTEX_STATIC_MASTER. +** Access to this variable is protected by SQLITE_MUTEX_STATIC_MAIN. */ #ifdef SQLITE_TEST SQLITE_PRIVATE BtShared *SQLITE_WSD sqlite3SharedCacheList = 0; @@ -62132,7 +69633,7 @@ SQLITE_API int sqlite3_enable_shared_cache(int enable){ ** manipulate entries in the BtShared.pLock linked list used to store ** shared-cache table level locks. If the library is compiled with the ** shared-cache feature disabled, then there is only ever one user - ** of each BtShared structure and so this locking is not necessary. + ** of each BtShared structure and so this locking is not necessary. ** So define the lock related functions as no-ops. */ #define querySharedCacheTableLock(a,b,c) SQLITE_OK @@ -62143,6 +69644,17 @@ SQLITE_API int sqlite3_enable_shared_cache(int enable){ #define hasReadConflicts(a, b) 0 #endif +#ifdef SQLITE_DEBUG +/* +** Return and reset the seek counter for a Btree object. +*/ +SQLITE_PRIVATE sqlite3_uint64 sqlite3BtreeSeekCount(Btree *pBt){ + u64 n = pBt->nSeek; + pBt->nSeek = 0; + return n; +} +#endif + /* ** Implementation of the SQLITE_CORRUPT_PAGE() macro. Takes a single ** (MemPage*) as an argument. The (MemPage*) must not be NULL. @@ -62156,8 +69668,8 @@ SQLITE_API int sqlite3_enable_shared_cache(int enable){ int corruptPageError(int lineno, MemPage *p){ char *zMsg; sqlite3BeginBenignMalloc(); - zMsg = sqlite3_mprintf("database corruption page %d of %s", - (int)p->pgno, sqlite3PagerFilename(p->pBt->pPager, 0) + zMsg = sqlite3_mprintf("database corruption page %u of %s", + p->pgno, sqlite3PagerFilename(p->pBt->pPager, 0) ); sqlite3EndBenignMalloc(); if( zMsg ){ @@ -62177,15 +69689,15 @@ int corruptPageError(int lineno, MemPage *p){ /* **** This function is only used as part of an assert() statement. *** ** -** Check to see if pBtree holds the required locks to read or write to the +** Check to see if pBtree holds the required locks to read or write to the ** table with root page iRoot. Return 1 if it does and 0 if not. ** -** For example, when writing to a table with root-page iRoot via +** For example, when writing to a table with root-page iRoot via ** Btree connection pBtree: ** ** assert( hasSharedCacheTableLock(pBtree, iRoot, 0, WRITE_LOCK) ); ** -** When writing to an index that resides in a sharable database, the +** When writing to an index that resides in a sharable database, the ** caller should have first obtained a lock specifying the root page of ** the corresponding table. This makes things a bit more complicated, ** as this module treats each table as a separate structure. To determine @@ -62207,7 +69719,7 @@ static int hasSharedCacheTableLock( BtLock *pLock; /* If this database is not shareable, or if the client is reading - ** and has the read-uncommitted flag set, then no lock is required. + ** and has the read-uncommitted flag set, then no lock is required. ** Return true immediately. */ if( (pBtree->sharable==0) @@ -62231,29 +69743,31 @@ static int hasSharedCacheTableLock( ** table. */ if( isIndex ){ HashElem *p; + int bSeen = 0; for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){ Index *pIdx = (Index *)sqliteHashData(p); - if( pIdx->tnum==(int)iRoot ){ - if( iTab ){ + if( pIdx->tnum==iRoot ){ + if( bSeen ){ /* Two or more indexes share the same root page. There must ** be imposter tables. So just return true. The assert is not ** useful in that case. */ return 1; } iTab = pIdx->pTable->tnum; + bSeen = 1; } } }else{ iTab = iRoot; } - /* Search for the required lock. Either a write-lock on root-page iTab, a + /* Search for the required lock. Either a write-lock on root-page iTab, a ** write-lock on the schema table, or (if the client is reading) a ** read-lock on iTab will suffice. Return 1 if any of these are found. */ for(pLock=pBtree->pBt->pLock; pLock; pLock=pLock->pNext){ - if( pLock->pBtree==pBtree + if( pLock->pBtree==pBtree && (pLock->iTable==iTab || (pLock->eLock==WRITE_LOCK && pLock->iTable==1)) - && pLock->eLock>=eLockType + && pLock->eLock>=eLockType ){ return 1; } @@ -62286,7 +69800,7 @@ static int hasSharedCacheTableLock( static int hasReadConflicts(Btree *pBtree, Pgno iRoot){ BtCursor *p; for(p=pBtree->pBt->pCursor; p; p=p->pNext){ - if( p->pgnoRoot==iRoot + if( p->pgnoRoot==iRoot && p->pBtree!=pBtree && 0==(p->pBtree->db->flags & SQLITE_ReadUncommit) ){ @@ -62298,7 +69812,7 @@ static int hasReadConflicts(Btree *pBtree, Pgno iRoot){ #endif /* #ifdef SQLITE_DEBUG */ /* -** Query to see if Btree handle p may obtain a lock of type eLock +** Query to see if Btree handle p may obtain a lock of type eLock ** (READ_LOCK or WRITE_LOCK) on the table with root-page iTab. Return ** SQLITE_OK if the lock may be obtained (by calling ** setSharedCacheTableLock()), or SQLITE_LOCKED if not. @@ -62311,14 +69825,14 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){ assert( eLock==READ_LOCK || eLock==WRITE_LOCK ); assert( p->db!=0 ); assert( !(p->db->flags&SQLITE_ReadUncommit)||eLock==WRITE_LOCK||iTab==1 ); - + /* If requesting a write-lock, then the Btree must have an open write - ** transaction on this file. And, obviously, for this to be so there + ** transaction on this file. And, obviously, for this to be so there ** must be an open write transaction on the file itself. */ assert( eLock==READ_LOCK || (p==pBt->pWriter && p->inTrans==TRANS_WRITE) ); assert( eLock==READ_LOCK || pBt->inTransaction==TRANS_WRITE ); - + /* This routine is a no-op if the shared-cache is not enabled */ if( !p->sharable ){ return SQLITE_OK; @@ -62333,7 +69847,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){ } for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ - /* The condition (pIter->eLock!=eLock) in the following if(...) + /* The condition (pIter->eLock!=eLock) in the following if(...) ** statement is a simplification of: ** ** (eLock==WRITE_LOCK || pIter->eLock==WRITE_LOCK) @@ -62360,7 +69874,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){ #ifndef SQLITE_OMIT_SHARED_CACHE /* ** Add a lock on the table with root-page iTable to the shared-btree used -** by Btree handle p. Parameter eLock must be either READ_LOCK or +** by Btree handle p. Parameter eLock must be either READ_LOCK or ** WRITE_LOCK. ** ** This function assumes the following: @@ -62372,7 +69886,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){ ** with the requested lock (i.e. querySharedCacheTableLock() has ** already been called and returned SQLITE_OK). ** -** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM +** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM ** is returned if a malloc attempt fails. */ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){ @@ -62386,11 +69900,11 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){ /* A connection with the read-uncommitted flag set will never try to ** obtain a read-lock using this function. The only read-lock obtained - ** by a connection in read-uncommitted mode is on the sqlite_master + ** by a connection in read-uncommitted mode is on the sqlite_schema ** table, and that lock is obtained in BtreeBeginTrans(). */ assert( 0==(p->db->flags&SQLITE_ReadUncommit) || eLock==WRITE_LOCK ); - /* This function should only be called on a sharable b-tree after it + /* This function should only be called on a sharable b-tree after it ** has been determined that no other b-tree holds a conflicting lock. */ assert( p->sharable ); assert( SQLITE_OK==querySharedCacheTableLock(p, iTable, eLock) ); @@ -62435,7 +69949,7 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){ ** Release all the table locks (locks obtained via calls to ** the setSharedCacheTableLock() procedure) held by Btree object p. ** -** This function assumes that Btree p has an open read or write +** This function assumes that Btree p has an open read or write ** transaction. If it does not, then the BTS_PENDING flag ** may be incorrectly cleared. */ @@ -62467,7 +69981,7 @@ static void clearAllSharedCacheTableLocks(Btree *p){ pBt->pWriter = 0; pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING); }else if( pBt->nTransaction==2 ){ - /* This function is called when Btree p is concluding its + /* This function is called when Btree p is concluding its ** transaction. If there currently exists a writer, and p is not ** that writer, then the number of locks held by connections other ** than the writer must be about to drop to zero. In this case @@ -62513,7 +70027,7 @@ static int cursorHoldsMutex(BtCursor *p){ } /* Verify that the cursor and the BtShared agree about what is the current -** database connetion. This is important in shared-cache mode. If the database +** database connetion. This is important in shared-cache mode. If the database ** connection pointers get out-of-sync, it is possible for routines like ** btreeInitPage() to reference an stale connection pointer that references a ** a connection that has already closed. This routine is used inside assert() @@ -62565,7 +70079,7 @@ static void invalidateIncrblobCursors( int isClearTable /* True if all rows are being deleted */ ){ BtCursor *p; - if( pBtree->hasIncrblobCur==0 ) return; + assert( pBtree->hasIncrblobCur ); assert( sqlite3BtreeHoldsMutex(pBtree) ); pBtree->hasIncrblobCur = 0; for(p=pBtree->pBt->pCursor; p; p=p->pNext){ @@ -62584,8 +70098,8 @@ static void invalidateIncrblobCursors( #endif /* SQLITE_OMIT_INCRBLOB */ /* -** Set bit pgno of the BtShared.pHasContent bitvec. This is called -** when a page that previously contained data becomes a free-list leaf +** Set bit pgno of the BtShared.pHasContent bitvec. This is called +** when a page that previously contained data becomes a free-list leaf ** page. ** ** The BtShared.pHasContent bitvec exists to work around an obscure @@ -62611,7 +70125,7 @@ static void invalidateIncrblobCursors( ** may be lost. In the event of a rollback, it may not be possible ** to restore the database to its original configuration. ** -** The solution is the BtShared.pHasContent bitvec. Whenever a page is +** The solution is the BtShared.pHasContent bitvec. Whenever a page is ** moved to become a free-list leaf page, the corresponding bit is ** set in the bitvec. Whenever a leaf page is extracted from the free-list, ** optimization 2 above is omitted if the corresponding bit is already @@ -62642,7 +70156,7 @@ static int btreeSetHasContent(BtShared *pBt, Pgno pgno){ */ static int btreeGetHasContent(BtShared *pBt, Pgno pgno){ Bitvec *p = pBt->pHasContent; - return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno))); + return p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTestNotNull(p, pgno)); } /* @@ -62672,13 +70186,13 @@ static void btreeReleaseAllCursorPages(BtCursor *pCur){ ** The cursor passed as the only argument must point to a valid entry ** when this function is called (i.e. have eState==CURSOR_VALID). This ** function saves the current cursor key in variables pCur->nKey and -** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error +** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error ** code otherwise. ** ** If the cursor is open on an intkey table, then the integer key ** (the rowid) is stored in pCur->nKey and pCur->pKey is left set to -** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is -** set to point to a malloced buffer pCur->nKey bytes in size containing +** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is +** set to point to a malloced buffer pCur->nKey bytes in size containing ** the key. */ static int saveCursorKey(BtCursor *pCur){ @@ -62691,13 +70205,19 @@ static int saveCursorKey(BtCursor *pCur){ /* Only the rowid is required for a table btree */ pCur->nKey = sqlite3BtreeIntegerKey(pCur); }else{ - /* For an index btree, save the complete key content */ + /* For an index btree, save the complete key content. It is possible + ** that the current key is corrupt. In that case, it is possible that + ** the sqlite3VdbeRecordUnpack() function may overread the buffer by + ** up to the size of 1 varint plus 1 8-byte value when the cursor + ** position is restored. Hence the 17 bytes of padding allocated + ** below. */ void *pKey; pCur->nKey = sqlite3BtreePayloadSize(pCur); - pKey = sqlite3Malloc( pCur->nKey ); + pKey = sqlite3Malloc( pCur->nKey + 9 + 8 ); if( pKey ){ rc = sqlite3BtreePayload(pCur, 0, (int)pCur->nKey, pKey); if( rc==SQLITE_OK ){ + memset(((u8*)pKey)+pCur->nKey, 0, 9+8); pCur->pKey = pKey; }else{ sqlite3_free(pKey); @@ -62711,11 +70231,11 @@ static int saveCursorKey(BtCursor *pCur){ } /* -** Save the current cursor position in the variables BtCursor.nKey +** Save the current cursor position in the variables BtCursor.nKey ** and BtCursor.pKey. The cursor's state is set to CURSOR_REQUIRESEEK. ** ** The caller must ensure that the cursor is valid (has eState==CURSOR_VALID) -** prior to calling this routine. +** prior to calling this routine. */ static int saveCursorPosition(BtCursor *pCur){ int rc; @@ -62724,6 +70244,9 @@ static int saveCursorPosition(BtCursor *pCur){ assert( 0==pCur->pKey ); assert( cursorHoldsMutex(pCur) ); + if( pCur->curFlags & BTCF_Pinned ){ + return SQLITE_CONSTRAINT_PINNED; + } if( pCur->eState==CURSOR_SKIPNEXT ){ pCur->eState = CURSOR_VALID; }else{ @@ -62751,7 +70274,7 @@ static int SQLITE_NOINLINE saveCursorsOnList(BtCursor*,Pgno,BtCursor*); ** routine is called just before cursor pExcept is used to modify the ** table, for example in BtreeDelete() or BtreeInsert(). ** -** If there are two or more cursors on the same btree, then all such +** If there are two or more cursors on the same btree, then all such ** cursors should have their BTCF_Multiple flag set. The btreeCursor() ** routine enforces that rule. This routine only needs to be called in ** the uncommon case when pExpect has the BTCF_Multiple flag set. @@ -62816,7 +70339,7 @@ SQLITE_PRIVATE void sqlite3BtreeClearCursor(BtCursor *pCur){ /* ** In this version of BtreeMoveto, pKey is a packed index record ** such as is generated by the OP_MakeRecord opcode. Unpack the -** record and then call BtreeMovetoUnpacked() to do the work. +** record and then call sqlite3BtreeIndexMoveto() to do the work. */ static int btreeMoveto( BtCursor *pCur, /* Cursor open on the btree to be searched */ @@ -62829,47 +70352,50 @@ static int btreeMoveto( UnpackedRecord *pIdxKey; /* Unpacked index key */ if( pKey ){ + KeyInfo *pKeyInfo = pCur->pKeyInfo; assert( nKey==(i64)(int)nKey ); - pIdxKey = sqlite3VdbeAllocUnpackedRecord(pCur->pKeyInfo); + pIdxKey = sqlite3VdbeAllocUnpackedRecord(pKeyInfo); if( pIdxKey==0 ) return SQLITE_NOMEM_BKPT; - sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey); - if( pIdxKey->nField==0 ){ + sqlite3VdbeRecordUnpack(pKeyInfo, (int)nKey, pKey, pIdxKey); + if( pIdxKey->nField==0 || pIdxKey->nField>pKeyInfo->nAllField ){ rc = SQLITE_CORRUPT_BKPT; - goto moveto_done; + }else{ + rc = sqlite3BtreeIndexMoveto(pCur, pIdxKey, pRes); } + sqlite3DbFree(pCur->pKeyInfo->db, pIdxKey); }else{ pIdxKey = 0; - } - rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes); -moveto_done: - if( pIdxKey ){ - sqlite3DbFree(pCur->pKeyInfo->db, pIdxKey); + rc = sqlite3BtreeTableMoveto(pCur, nKey, bias, pRes); } return rc; } /* ** Restore the cursor to the position it was in (or as close to as possible) -** when saveCursorPosition() was called. Note that this call deletes the +** when saveCursorPosition() was called. Note that this call deletes the ** saved position info stored by saveCursorPosition(), so there can be -** at most one effective restoreCursorPosition() call after each +** at most one effective restoreCursorPosition() call after each ** saveCursorPosition(). */ static int btreeRestoreCursorPosition(BtCursor *pCur){ int rc; - int skipNext; + int skipNext = 0; assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState>=CURSOR_REQUIRESEEK ); if( pCur->eState==CURSOR_FAULT ){ return pCur->skipNext; } pCur->eState = CURSOR_INVALID; - rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext); + if( sqlite3FaultSim(410) ){ + rc = SQLITE_IOERR; + }else{ + rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext); + } if( rc==SQLITE_OK ){ sqlite3_free(pCur->pKey); pCur->pKey = 0; assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_INVALID ); - pCur->skipNext |= skipNext; + if( skipNext ) pCur->skipNext = skipNext; if( pCur->skipNext && pCur->eState==CURSOR_VALID ){ pCur->eState = CURSOR_SKIPNEXT; } @@ -62916,7 +70442,7 @@ SQLITE_PRIVATE BtCursor *sqlite3BtreeFakeValidCursor(void){ /* ** This routine restores a cursor back to its original position after it ** has been moved by some outside activity (such as a btree rebalance or -** a row having been deleted out from under the cursor). +** a row having been deleted out from under the cursor). ** ** On success, the *pDifferentRow parameter is false if the cursor is left ** pointing at exactly the same row. *pDifferntRow is the row the cursor @@ -62939,7 +70465,6 @@ SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor *pCur, int *pDifferentRow) if( pCur->eState!=CURSOR_VALID ){ *pDifferentRow = 1; }else{ - assert( pCur->skipNext==0 ); *pDifferentRow = 0; } return SQLITE_OK; @@ -62953,8 +70478,25 @@ SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor *pCur, int *pDifferentRow) */ SQLITE_PRIVATE void sqlite3BtreeCursorHint(BtCursor *pCur, int eHintType, ...){ /* Used only by system that substitute their own storage engine */ +#ifdef SQLITE_DEBUG + if( ALWAYS(eHintType==BTREE_HINT_RANGE) ){ + va_list ap; + Expr *pExpr; + Walker w; + memset(&w, 0, sizeof(w)); + w.xExprCallback = sqlite3CursorRangeHintExprCheck; + va_start(ap, eHintType); + pExpr = va_arg(ap, Expr*); + w.u.aMem = va_arg(ap, Mem*); + va_end(ap); + assert( pExpr!=0 ); + assert( w.u.aMem!=0 ); + sqlite3WalkExpr(&w, pExpr); + } +#endif /* SQLITE_DEBUG */ } -#endif +#endif /* SQLITE_ENABLE_CURSOR_HINTS */ + /* ** Provide flag hints to the cursor. @@ -62982,7 +70524,7 @@ static Pgno ptrmapPageno(BtShared *pBt, Pgno pgno){ if( pgno<2 ) return 0; nPagesPerMapPage = (pBt->usableSize/5)+1; iPtrMap = (pgno-2)/nPagesPerMapPage; - ret = (iPtrMap*nPagesPerMapPage) + 2; + ret = (iPtrMap*nPagesPerMapPage) + 2; if( ret==PENDING_BYTE_PAGE(pBt) ){ ret++; } @@ -63009,7 +70551,7 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){ if( *pRC ) return; assert( sqlite3_mutex_held(pBt->mutex) ); - /* The master-journal page number must never be used as a pointer map page */ + /* The super-journal page number must never be used as a pointer map page */ assert( 0==PTRMAP_ISPAGE(pBt, PENDING_BYTE_PAGE(pBt)) ); assert( pBt->autoVacuum ); @@ -63023,6 +70565,13 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){ *pRC = rc; return; } + if( ((char*)sqlite3PagerGetExtra(pDbPage))[0]!=0 ){ + /* The first byte of the extra data is the MemPage.isInit byte. + ** If that byte is set, it means this page is also being used + ** as a btree page. */ + *pRC = SQLITE_CORRUPT_BKPT; + goto ptrmap_exit; + } offset = PTRMAP_PTROFFSET(iPtrmap, key); if( offset<0 ){ *pRC = SQLITE_CORRUPT_BKPT; @@ -63032,7 +70581,7 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){ pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){ - TRACE(("PTRMAP_UPDATE: %d->(%d,%d)\n", key, eType, parent)); + TRACE(("PTRMAP_UPDATE: %u->(%u,%u)\n", key, eType, parent)); *pRC= rc = sqlite3PagerWrite(pDbPage); if( rc==SQLITE_OK ){ pPtrmap[offset] = eType; @@ -63085,7 +70634,7 @@ static int ptrmapGet(BtShared *pBt, Pgno key, u8 *pEType, Pgno *pPgno){ #else /* if defined SQLITE_OMIT_AUTOVACUUM */ #define ptrmapPut(w,x,y,z,rc) #define ptrmapGet(w,x,y,z) SQLITE_OK - #define ptrmapPutOvflPtr(x, y, rc) + #define ptrmapPutOvflPtr(x, y, z, rc) #endif /* @@ -63141,6 +70690,24 @@ static SQLITE_NOINLINE void btreeParseCellAdjustSizeForOverflow( pInfo->nSize = (u16)(&pInfo->pPayload[pInfo->nLocal] - pCell) + 4; } +/* +** Given a record with nPayload bytes of payload stored within btree +** page pPage, return the number of bytes of payload stored locally. +*/ +static int btreePayloadToLocal(MemPage *pPage, i64 nPayload){ + int maxLocal; /* Maximum amount of payload held locally */ + maxLocal = pPage->maxLocal; + if( nPayload<=maxLocal ){ + return nPayload; + }else{ + int minLocal; /* Minimum amount of payload held locally */ + int surplus; /* Overflow payload available for local storage */ + minLocal = pPage->minLocal; + surplus = minLocal + (nPayload - minLocal)%(pPage->pBt->usableSize-4); + return ( surplus <= maxLocal ) ? surplus : minLocal; + } +} + /* ** The following routines are implementations of the MemPage.xParseCell() ** method. @@ -63207,19 +70774,37 @@ static void btreeParseCellPtr( ** ** pIter += getVarint(pIter, (u64*)&pInfo->nKey); ** - ** The code is inlined to avoid a function call. + ** The code is inlined and the loop is unrolled for performance. + ** This routine is a high-runner. */ iKey = *pIter; if( iKey>=0x80 ){ - u8 *pEnd = &pIter[7]; - iKey &= 0x7f; - while(1){ - iKey = (iKey<<7) | (*++pIter & 0x7f); - if( (*pIter)<0x80 ) break; - if( pIter>=pEnd ){ - iKey = (iKey<<8) | *++pIter; - break; + u8 x; + iKey = (iKey<<7) ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ 0x10204000 ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ 0x4000 ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ 0x4000 ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ 0x4000 ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<7) ^ 0x4000 ^ (x = *++pIter); + if( x>=0x80 ){ + iKey = (iKey<<8) ^ 0x8000 ^ (*++pIter); + } + } + } + } + } + }else{ + iKey ^= 0x204000; } + }else{ + iKey ^= 0x4000; } } pIter++; @@ -63228,7 +70813,7 @@ static void btreeParseCellPtr( pInfo->nPayload = nPayload; pInfo->pPayload = pIter; testcase( nPayload==pPage->maxLocal ); - testcase( nPayload==pPage->maxLocal+1 ); + testcase( nPayload==(u32)pPage->maxLocal+1 ); if( nPayload<=pPage->maxLocal ){ /* This is the (easy) common case where the entire payload fits ** on the local page. No overflow is required. @@ -63265,7 +70850,7 @@ static void btreeParseCellPtrIndex( pInfo->nPayload = nPayload; pInfo->pPayload = pIter; testcase( nPayload==pPage->maxLocal ); - testcase( nPayload==pPage->maxLocal+1 ); + testcase( nPayload==(u32)pPage->maxLocal+1 ); if( nPayload<=pPage->maxLocal ){ /* This is the (easy) common case where the entire payload fits ** on the local page. No overflow is required. @@ -63295,10 +70880,12 @@ static void btreeParseCell( ** the space used by the cell pointer. ** ** cellSizePtrNoPayload() => table internal nodes -** cellSizePtr() => all index nodes & table leaf nodes +** cellSizePtrTableLeaf() => table leaf nodes +** cellSizePtr() => index internal nodes +** cellSizeIdxLeaf() => index leaf nodes */ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ - u8 *pIter = pCell + pPage->childPtrSize; /* For looping over bytes of pCell */ + u8 *pIter = pCell + 4; /* For looping over bytes of pCell */ u8 *pEnd; /* End mark for a varint */ u32 nSize; /* Size value to return */ @@ -63311,6 +70898,7 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ pPage->xParseCell(pPage, pCell, &debuginfo); #endif + assert( pPage->childPtrSize==4 ); nSize = *pIter; if( nSize>=0x80 ){ pEnd = &pIter[8]; @@ -63320,15 +70908,50 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ }while( *(pIter)>=0x80 && pIterintKey ){ - /* pIter now points at the 64-bit integer key value, a variable length - ** integer. The following block moves pIter to point at the first byte - ** past the end of the key value. */ - pEnd = &pIter[9]; - while( (*pIter++)&0x80 && pItermaxLocal ); - testcase( nSize==pPage->maxLocal+1 ); + testcase( nSize==(u32)pPage->maxLocal+1 ); + if( nSize<=pPage->maxLocal ){ + nSize += (u32)(pIter - pCell); + assert( nSize>4 ); + }else{ + int minLocal = pPage->minLocal; + nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4); + testcase( nSize==pPage->maxLocal ); + testcase( nSize==(u32)pPage->maxLocal+1 ); + if( nSize>pPage->maxLocal ){ + nSize = minLocal; + } + nSize += 4 + (u16)(pIter - pCell); + } + assert( nSize==debuginfo.nSize || CORRUPT_DB ); + return (u16)nSize; +} +static u16 cellSizePtrIdxLeaf(MemPage *pPage, u8 *pCell){ + u8 *pIter = pCell; /* For looping over bytes of pCell */ + u8 *pEnd; /* End mark for a varint */ + u32 nSize; /* Size value to return */ + +#ifdef SQLITE_DEBUG + /* The value returned by this function should always be the same as + ** the (CellInfo.nSize) value found by doing a full parse of the + ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of + ** this function verifies that this invariant is not violated. */ + CellInfo debuginfo; + pPage->xParseCell(pPage, pCell, &debuginfo); +#endif + + assert( pPage->childPtrSize==0 ); + nSize = *pIter; + if( nSize>=0x80 ){ + pEnd = &pIter[8]; + nSize &= 0x7f; + do{ + nSize = (nSize<<7) | (*++pIter & 0x7f); + }while( *(pIter)>=0x80 && pItermaxLocal ); + testcase( nSize==(u32)pPage->maxLocal+1 ); if( nSize<=pPage->maxLocal ){ nSize += (u32)(pIter - pCell); if( nSize<4 ) nSize = 4; @@ -63336,7 +70959,7 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ int minLocal = pPage->minLocal; nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4); testcase( nSize==pPage->maxLocal ); - testcase( nSize==pPage->maxLocal+1 ); + testcase( nSize==(u32)pPage->maxLocal+1 ); if( nSize>pPage->maxLocal ){ nSize = minLocal; } @@ -63366,6 +70989,58 @@ static u16 cellSizePtrNoPayload(MemPage *pPage, u8 *pCell){ assert( debuginfo.nSize==(u16)(pIter - pCell) || CORRUPT_DB ); return (u16)(pIter - pCell); } +static u16 cellSizePtrTableLeaf(MemPage *pPage, u8 *pCell){ + u8 *pIter = pCell; /* For looping over bytes of pCell */ + u8 *pEnd; /* End mark for a varint */ + u32 nSize; /* Size value to return */ + +#ifdef SQLITE_DEBUG + /* The value returned by this function should always be the same as + ** the (CellInfo.nSize) value found by doing a full parse of the + ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of + ** this function verifies that this invariant is not violated. */ + CellInfo debuginfo; + pPage->xParseCell(pPage, pCell, &debuginfo); +#endif + + nSize = *pIter; + if( nSize>=0x80 ){ + pEnd = &pIter[8]; + nSize &= 0x7f; + do{ + nSize = (nSize<<7) | (*++pIter & 0x7f); + }while( *(pIter)>=0x80 && pItermaxLocal ); + testcase( nSize==(u32)pPage->maxLocal+1 ); + if( nSize<=pPage->maxLocal ){ + nSize += (u32)(pIter - pCell); + if( nSize<4 ) nSize = 4; + }else{ + int minLocal = pPage->minLocal; + nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4); + testcase( nSize==pPage->maxLocal ); + testcase( nSize==(u32)pPage->maxLocal+1 ); + if( nSize>pPage->maxLocal ){ + nSize = minLocal; + } + nSize += 4 + (u16)(pIter - pCell); + } + assert( nSize==debuginfo.nSize || CORRUPT_DB ); + return (u16)nSize; +} #ifdef SQLITE_DEBUG @@ -63378,17 +71053,24 @@ static u16 cellSize(MemPage *pPage, int iCell){ #ifndef SQLITE_OMIT_AUTOVACUUM /* -** If the cell pCell, part of page pPage contains a pointer -** to an overflow page, insert an entry into the pointer-map -** for the overflow page. +** The cell pCell is currently part of page pSrc but will ultimately be part +** of pPage. (pSrc and pPage are often the same.) If pCell contains a +** pointer to an overflow page, insert an entry into the pointer-map for +** the overflow page that will be valid after pCell has been moved to pPage. */ -static void ptrmapPutOvflPtr(MemPage *pPage, u8 *pCell, int *pRC){ +static void ptrmapPutOvflPtr(MemPage *pPage, MemPage *pSrc, u8 *pCell,int *pRC){ CellInfo info; if( *pRC ) return; assert( pCell!=0 ); pPage->xParseCell(pPage, pCell, &info); if( info.nLocalaDataEnd, pCell, pCell+info.nLocal) ){ + testcase( pSrc!=pPage ); + *pRC = SQLITE_CORRUPT_BKPT; + return; + } + ovfl = get4byte(&pCell[info.nSize-4]); ptrmapPut(pPage->pBt, ovfl, PTRMAP_OVERFLOW1, pPage->pgno, pRC); } } @@ -63421,41 +71103,32 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){ unsigned char *src; /* Source of content */ int iCellFirst; /* First allowable cell index */ int iCellLast; /* Last possible cell index */ + int iCellStart; /* First cell offset in input */ assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( pPage->pBt!=0 ); assert( pPage->pBt->usableSize <= SQLITE_MAX_PAGE_SIZE ); assert( pPage->nOverflow==0 ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - temp = 0; - src = data = pPage->aData; + data = pPage->aData; hdr = pPage->hdrOffset; cellOffset = pPage->cellOffset; nCell = pPage->nCell; - assert( nCell==get2byte(&data[hdr+3]) ); + assert( nCell==get2byte(&data[hdr+3]) || CORRUPT_DB ); iCellFirst = cellOffset + 2*nCell; usableSize = pPage->pBt->usableSize; /* This block handles pages with two or fewer free blocks and nMaxFrag ** or fewer fragmented bytes. In this case it is faster to move the ** two (or one) blocks of cells using memmove() and add the required - ** offsets to each pointer in the cell-pointer array than it is to + ** offsets to each pointer in the cell-pointer array than it is to ** reconstruct the entire page. */ if( (int)data[hdr+7]<=nMaxFrag ){ int iFree = get2byte(&data[hdr+1]); + if( iFree>usableSize-4 ) return SQLITE_CORRUPT_PAGE(pPage); if( iFree ){ int iFree2 = get2byte(&data[iFree]); - - /* pageFindSlot() has already verified that free blocks are sorted - ** in order of offset within the page, and that no block extends - ** past the end of the page. Provided the two free slots do not - ** overlap, this guarantees that the memmove() calls below will not - ** overwrite the usableSize byte buffer, even if the database page - ** is corrupt. */ - assert( iFree2==0 || iFree2>iFree ); - assert( iFree+get2byte(&data[iFree+2]) <= usableSize ); - assert( iFree2==0 || iFree2+get2byte(&data[iFree2+2]) <= usableSize ); - + if( iFree2>usableSize-4 ) return SQLITE_CORRUPT_PAGE(pPage); if( 0==iFree2 || (data[iFree2]==0 && data[iFree2+1]==0) ){ u8 *pEnd = &data[cellOffset + nCell*2]; u8 *pAddr; @@ -63466,12 +71139,15 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){ return SQLITE_CORRUPT_PAGE(pPage); } if( iFree2 ){ - assert( iFree+sz<=iFree2 ); /* Verified by pageFindSlot() */ + if( iFree+sz>iFree2 ) return SQLITE_CORRUPT_PAGE(pPage); sz2 = get2byte(&data[iFree2+2]); - assert( iFree+sz+sz2+iFree2-(iFree+sz) <= usableSize ); + if( iFree2+sz2 > usableSize ) return SQLITE_CORRUPT_PAGE(pPage); memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz)); sz += sz2; + }else if( iFree+sz>usableSize ){ + return SQLITE_CORRUPT_PAGE(pPage); } + cbrk = top+sz; assert( cbrk+(iFree-top) <= usableSize ); memmove(&data[cbrk], &data[top], iFree-top); @@ -63487,41 +71163,40 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){ cbrk = usableSize; iCellLast = usableSize - 4; - for(i=0; iiCellLast ){ - return SQLITE_CORRUPT_PAGE(pPage); + iCellStart = get2byte(&data[hdr+5]); + if( nCell>0 ){ + temp = sqlite3PagerTempSpace(pPage->pBt->pPager); + memcpy(temp, data, usableSize); + src = temp; + for(i=0; iiCellLast ){ + return SQLITE_CORRUPT_PAGE(pPage); + } + assert( pc>=0 && pc<=iCellLast ); + size = pPage->xCellSize(pPage, &src[pc]); + cbrk -= size; + if( cbrkusableSize ){ + return SQLITE_CORRUPT_PAGE(pPage); + } + assert( cbrk+size<=usableSize && cbrk>=iCellStart ); + testcase( cbrk+size==usableSize ); + testcase( pc+size==usableSize ); + put2byte(pAddr, cbrk); + memcpy(&data[cbrk], &src[pc], size); } - assert( pc>=iCellFirst && pc<=iCellLast ); - size = pPage->xCellSize(pPage, &src[pc]); - cbrk -= size; - if( cbrkusableSize ){ - return SQLITE_CORRUPT_PAGE(pPage); - } - assert( cbrk+size<=usableSize && cbrk>=iCellFirst ); - testcase( cbrk+size==usableSize ); - testcase( pc+size==usableSize ); - put2byte(pAddr, cbrk); - if( temp==0 ){ - int x; - if( cbrk==pc ) continue; - temp = sqlite3PagerTempSpace(pPage->pBt->pPager); - x = get2byte(&data[hdr+5]); - memcpy(&temp[x], &data[x], (cbrk+size) - x); - src = temp; - } - memcpy(&data[cbrk], &src[pc], size); } data[hdr+7] = 0; - defragment_out: +defragment_out: + assert( pPage->nFree>=0 ); if( data[hdr+7]+cbrk-iCellFirst!=pPage->nFree ){ return SQLITE_CORRUPT_PAGE(pPage); } @@ -63549,27 +71224,26 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){ ** causes the fragmentation count to exceed 60. */ static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){ - const int hdr = pPg->hdrOffset; - u8 * const aData = pPg->aData; - int iAddr = hdr + 1; - int pc = get2byte(&aData[iAddr]); - int x; - int usableSize = pPg->pBt->usableSize; - int size; /* Size of the free slot */ + const int hdr = pPg->hdrOffset; /* Offset to page header */ + u8 * const aData = pPg->aData; /* Page data */ + int iAddr = hdr + 1; /* Address of ptr to pc */ + u8 *pTmp = &aData[iAddr]; /* Temporary ptr into aData[] */ + int pc = get2byte(pTmp); /* Address of a free slot */ + int x; /* Excess size of the slot */ + int maxPC = pPg->pBt->usableSize - nByte; /* Max address for a usable slot */ + int size; /* Size of the free slot */ assert( pc>0 ); - while( pc<=usableSize-4 ){ + while( pc<=maxPC ){ /* EVIDENCE-OF: R-22710-53328 The third and fourth bytes of each ** freeblock form a big-endian integer which is the size of the freeblock ** in bytes, including the 4-byte header. */ - size = get2byte(&aData[pc+2]); + pTmp = &aData[pc+2]; + size = get2byte(pTmp); if( (x = size - nByte)>=0 ){ testcase( x==4 ); testcase( x==3 ); - if( size+pc > usableSize ){ - *pRc = SQLITE_CORRUPT_PAGE(pPg); - return 0; - }else if( x<4 ){ + if( x<4 ){ /* EVIDENCE-OF: R-11498-58022 In a well-formed b-tree page, the total ** number of bytes in fragments may not exceed 60. */ if( aData[hdr+7]>57 ) return 0; @@ -63578,21 +71252,33 @@ static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){ ** fragmented bytes within the page. */ memcpy(&aData[iAddr], &aData[pc], 2); aData[hdr+7] += (u8)x; + return &aData[pc]; + }else if( x+pc > maxPC ){ + /* This slot extends off the end of the usable part of the page */ + *pRc = SQLITE_CORRUPT_PAGE(pPg); + return 0; }else{ /* The slot remains on the free-list. Reduce its size to account - ** for the portion used by the new allocation. */ + ** for the portion used by the new allocation. */ put2byte(&aData[pc+2], x); } return &aData[pc + x]; } iAddr = pc; - pc = get2byte(&aData[pc]); - if( pcmaxPC+nByte-4 ){ + /* The free slot chain extends off the end of the page */ *pRc = SQLITE_CORRUPT_PAGE(pPg); } - return 0; } @@ -63609,13 +71295,14 @@ static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){ ** allocation is being made in order to insert a new cell, so we will ** also end up needing a new cell pointer. */ -static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ +static SQLITE_INLINE int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ const int hdr = pPage->hdrOffset; /* Local cache of pPage->hdrOffset */ u8 * const data = pPage->aData; /* Local cache of pPage->aData */ int top; /* First byte of cell content area */ int rc = SQLITE_OK; /* Integer return code */ + u8 *pTmp; /* Temp ptr into data[] */ int gap; /* First byte of gap between cell pointers and cell content */ - + assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( pPage->pBt ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); @@ -63632,19 +71319,21 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ ** then the cell content offset of an empty page wants to be 65536. ** However, that integer is too large to be stored in a 2-byte unsigned ** integer, so a value of 0 is used in its place. */ - top = get2byte(&data[hdr+5]); - assert( top<=(int)pPage->pBt->usableSize ); /* Prevent by getAndInitPage() */ + pTmp = &data[hdr+5]; + top = get2byte(pTmp); if( gap>top ){ if( top==0 && pPage->pBt->usableSize==65536 ){ top = 65536; }else{ return SQLITE_CORRUPT_PAGE(pPage); } + }else if( top>(int)pPage->pBt->usableSize ){ + return SQLITE_CORRUPT_PAGE(pPage); } - /* If there is enough space between gap and top for one more cell pointer - ** array entry offset, and if the freelist is not empty, then search the - ** freelist looking for a free slot big enough to satisfy the request. + /* If there is enough space between gap and top for one more cell pointer, + ** and if the freelist is not empty, then search the + ** freelist looking for a slot big enough to satisfy the request. */ testcase( gap+2==top ); testcase( gap+1==top ); @@ -63652,9 +71341,14 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){ u8 *pSpace = pageFindSlot(pPage, nByte, &rc); if( pSpace ){ - assert( pSpace>=data && (pSpace - data)<65536 ); - *pIdx = (int)(pSpace - data); - return SQLITE_OK; + int g2; + assert( pSpace+nByte<=data+pPage->pBt->usableSize ); + *pIdx = g2 = (int)(pSpace-data); + if( g2<=gap ){ + return SQLITE_CORRUPT_PAGE(pPage); + }else{ + return SQLITE_OK; + } }else if( rc ){ return rc; } @@ -63666,6 +71360,7 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ testcase( gap+2+nByte==top ); if( gap+2+nByte>top ){ assert( pPage->nCell>0 || CORRUPT_DB ); + assert( pPage->nFree>=0 ); rc = defragmentPage(pPage, MIN(4, pPage->nFree - (2+nByte))); if( rc ) return rc; top = get2byteNotZero(&data[hdr+5]); @@ -63674,7 +71369,7 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ /* Allocate memory from the gap in between the cell pointer array - ** and the cell content area. The btreeInitPage() call has already + ** and the cell content area. The btreeComputeFreeSpace() call has already ** validated the freelist. Given that the freelist is valid, there ** is no way that the allocation can extend off the end of the page. ** The assert() below verifies the previous sentence. @@ -63693,9 +71388,9 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ ** ** Adjacent freeblocks are coalesced. ** -** Note that even though the freeblock list was checked by btreeInitPage(), +** Even though the freeblock list was checked by btreeComputeFreeSpace(), ** that routine will not detect overlap between cells or freeblocks. Nor -** does it detect cells or freeblocks that encrouch into the reserved bytes +** does it detect cells or freeblocks that encroach into the reserved bytes ** at the end of the page. So do additional corruption checks inside this ** routine and return SQLITE_CORRUPT if any problems are found. */ @@ -63708,6 +71403,7 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ u16 x; /* Offset to cell content area */ u32 iEnd = iStart + iSize; /* First byte past the iStart buffer */ unsigned char *data = pPage->aData; /* Page content */ + u8 *pTmp; /* Temporary ptr into data[] */ assert( pPage->pBt!=0 ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); @@ -63715,9 +71411,9 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ assert( CORRUPT_DB || iEnd <= pPage->pBt->usableSize ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); assert( iSize>=4 ); /* Minimum cell size is 4 */ - assert( iStart<=pPage->pBt->usableSize-4 ); + assert( CORRUPT_DB || iStart<=pPage->pBt->usableSize-4 ); - /* The list of freeblocks must be in ascending order. Find the + /* The list of freeblocks must be in ascending order. Find the ** spot on the list where iStart should be inserted. */ hdr = pPage->hdrOffset; @@ -63726,17 +71422,17 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ iFreeBlk = 0; /* Shortcut for the case when the freelist is empty */ }else{ while( (iFreeBlk = get2byte(&data[iPtr]))pPage->pBt->usableSize-4 ){ + if( iFreeBlk>pPage->pBt->usableSize-4 ){ /* TH3: corrupt081.100 */ return SQLITE_CORRUPT_PAGE(pPage); } - assert( iFreeBlk>iPtr || iFreeBlk==0 ); - + assert( iFreeBlk>iPtr || iFreeBlk==0 || CORRUPT_DB ); + /* At this point: ** iFreeBlk: First freeblock after iStart, or zero if none ** iPtr: The address of a pointer to iFreeBlk @@ -63753,7 +71449,7 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ iSize = iEnd - iStart; iFreeBlk = get2byte(&data[iFreeBlk]); } - + /* If iPtr is another freeblock (that is, if iPtr is not the freelist ** pointer in the page header) then check to see if iStart should be ** coalesced onto the end of iPtr. @@ -63770,25 +71466,27 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ if( nFrag>data[hdr+7] ) return SQLITE_CORRUPT_PAGE(pPage); data[hdr+7] -= nFrag; } - x = get2byte(&data[hdr+5]); - if( iStart<=x ){ - /* The new freeblock is at the beginning of the cell content area, - ** so just extend the cell content area rather than create another - ** freelist entry */ - if( iStartpBt->btsFlags & BTS_FAST_SECURE ){ /* Overwrite deleted information with zeros when the secure_delete ** option is enabled */ memset(&data[iStart], 0, iSize); } - put2byte(&data[iStart], iFreeBlk); - put2byte(&data[iStart+2], iSize); + if( iStart<=x ){ + /* The new freeblock is at the beginning of the cell content area, + ** so just extend the cell content area rather than create another + ** freelist entry */ + if( iStartnFree += iOrigSize; return SQLITE_OK; } @@ -63800,76 +71498,79 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ ** Only the following combinations are supported. Anything different ** indicates a corrupt database files: ** -** PTF_ZERODATA -** PTF_ZERODATA | PTF_LEAF -** PTF_LEAFDATA | PTF_INTKEY -** PTF_LEAFDATA | PTF_INTKEY | PTF_LEAF +** PTF_ZERODATA (0x02, 2) +** PTF_LEAFDATA | PTF_INTKEY (0x05, 5) +** PTF_ZERODATA | PTF_LEAF (0x0a, 10) +** PTF_LEAFDATA | PTF_INTKEY | PTF_LEAF (0x0d, 13) */ static int decodeFlags(MemPage *pPage, int flagByte){ BtShared *pBt; /* A copy of pPage->pBt */ assert( pPage->hdrOffset==(pPage->pgno==1 ? 100 : 0) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - pPage->leaf = (u8)(flagByte>>3); assert( PTF_LEAF == 1<<3 ); - flagByte &= ~PTF_LEAF; - pPage->childPtrSize = 4-4*pPage->leaf; - pPage->xCellSize = cellSizePtr; pBt = pPage->pBt; - if( flagByte==(PTF_LEAFDATA | PTF_INTKEY) ){ - /* EVIDENCE-OF: R-07291-35328 A value of 5 (0x05) means the page is an - ** interior table b-tree page. */ - assert( (PTF_LEAFDATA|PTF_INTKEY)==5 ); - /* EVIDENCE-OF: R-26900-09176 A value of 13 (0x0d) means the page is a - ** leaf table b-tree page. */ - assert( (PTF_LEAFDATA|PTF_INTKEY|PTF_LEAF)==13 ); - pPage->intKey = 1; - if( pPage->leaf ){ + pPage->max1bytePayload = pBt->max1bytePayload; + if( flagByte>=(PTF_ZERODATA | PTF_LEAF) ){ + pPage->childPtrSize = 0; + pPage->leaf = 1; + if( flagByte==(PTF_LEAFDATA | PTF_INTKEY | PTF_LEAF) ){ pPage->intKeyLeaf = 1; + pPage->xCellSize = cellSizePtrTableLeaf; pPage->xParseCell = btreeParseCellPtr; + pPage->intKey = 1; + pPage->maxLocal = pBt->maxLeaf; + pPage->minLocal = pBt->minLeaf; + }else if( flagByte==(PTF_ZERODATA | PTF_LEAF) ){ + pPage->intKey = 0; + pPage->intKeyLeaf = 0; + pPage->xCellSize = cellSizePtrIdxLeaf; + pPage->xParseCell = btreeParseCellPtrIndex; + pPage->maxLocal = pBt->maxLocal; + pPage->minLocal = pBt->minLocal; }else{ + pPage->intKey = 0; + pPage->intKeyLeaf = 0; + pPage->xCellSize = cellSizePtrIdxLeaf; + pPage->xParseCell = btreeParseCellPtrIndex; + return SQLITE_CORRUPT_PAGE(pPage); + } + }else{ + pPage->childPtrSize = 4; + pPage->leaf = 0; + if( flagByte==(PTF_ZERODATA) ){ + pPage->intKey = 0; + pPage->intKeyLeaf = 0; + pPage->xCellSize = cellSizePtr; + pPage->xParseCell = btreeParseCellPtrIndex; + pPage->maxLocal = pBt->maxLocal; + pPage->minLocal = pBt->minLocal; + }else if( flagByte==(PTF_LEAFDATA | PTF_INTKEY) ){ pPage->intKeyLeaf = 0; pPage->xCellSize = cellSizePtrNoPayload; pPage->xParseCell = btreeParseCellPtrNoPayload; + pPage->intKey = 1; + pPage->maxLocal = pBt->maxLeaf; + pPage->minLocal = pBt->minLeaf; + }else{ + pPage->intKey = 0; + pPage->intKeyLeaf = 0; + pPage->xCellSize = cellSizePtr; + pPage->xParseCell = btreeParseCellPtrIndex; + return SQLITE_CORRUPT_PAGE(pPage); } - pPage->maxLocal = pBt->maxLeaf; - pPage->minLocal = pBt->minLeaf; - }else if( flagByte==PTF_ZERODATA ){ - /* EVIDENCE-OF: R-43316-37308 A value of 2 (0x02) means the page is an - ** interior index b-tree page. */ - assert( (PTF_ZERODATA)==2 ); - /* EVIDENCE-OF: R-59615-42828 A value of 10 (0x0a) means the page is a - ** leaf index b-tree page. */ - assert( (PTF_ZERODATA|PTF_LEAF)==10 ); - pPage->intKey = 0; - pPage->intKeyLeaf = 0; - pPage->xParseCell = btreeParseCellPtrIndex; - pPage->maxLocal = pBt->maxLocal; - pPage->minLocal = pBt->minLocal; - }else{ - /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is - ** an error. */ - return SQLITE_CORRUPT_PAGE(pPage); } - pPage->max1bytePayload = pBt->max1bytePayload; return SQLITE_OK; } /* -** Initialize the auxiliary information for a disk block. -** -** Return SQLITE_OK on success. If we see that the page does -** not contain a well-formed database page, then return -** SQLITE_CORRUPT. Note that a return of SQLITE_OK does not -** guarantee that the page is well-formed. It only shows that -** we failed to detect any corruption. +** Compute the amount of freespace on the page. In other words, fill +** in the pPage->nFree field. */ -static int btreeInitPage(MemPage *pPage){ +static int btreeComputeFreeSpace(MemPage *pPage){ int pc; /* Address of a freeblock within pPage->aData[] */ u8 hdr; /* Offset to beginning of page header */ u8 *data; /* Equal to pPage->aData */ - BtShared *pBt; /* The main btree structure */ int usableSize; /* Amount of usable space on each page */ - u16 cellOffset; /* Offset from start of page to first cell pointer */ int nFree; /* Number of unused bytes on the page */ int top; /* First byte of the cell content area */ int iCellFirst; /* First allowable cell or freeblock offset */ @@ -63881,71 +71582,18 @@ static int btreeInitPage(MemPage *pPage){ assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) ); assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) ); assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) ); - assert( pPage->isInit==0 ); + assert( pPage->isInit==1 ); + assert( pPage->nFree<0 ); - pBt = pPage->pBt; + usableSize = pPage->pBt->usableSize; hdr = pPage->hdrOffset; data = pPage->aData; - /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating - ** the b-tree page type. */ - if( decodeFlags(pPage, data[hdr]) ){ - return SQLITE_CORRUPT_PAGE(pPage); - } - assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); - pPage->maskPage = (u16)(pBt->pageSize - 1); - pPage->nOverflow = 0; - usableSize = pBt->usableSize; - pPage->cellOffset = cellOffset = hdr + 8 + pPage->childPtrSize; - pPage->aDataEnd = &data[usableSize]; - pPage->aCellIdx = &data[cellOffset]; - pPage->aDataOfst = &data[pPage->childPtrSize]; /* EVIDENCE-OF: R-58015-48175 The two-byte integer at offset 5 designates ** the start of the cell content area. A zero value for this integer is ** interpreted as 65536. */ top = get2byteNotZero(&data[hdr+5]); - /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the - ** number of cells on the page. */ - pPage->nCell = get2byte(&data[hdr+3]); - if( pPage->nCell>MX_CELL(pBt) ){ - /* To many cells for a single page. The page must be corrupt */ - return SQLITE_CORRUPT_PAGE(pPage); - } - testcase( pPage->nCell==MX_CELL(pBt) ); - /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only - ** possible for a root page of a table that contains no rows) then the - ** offset to the cell content area will equal the page size minus the - ** bytes of reserved space. */ - assert( pPage->nCell>0 || top==usableSize || CORRUPT_DB ); - - /* A malformed database page might cause us to read past the end - ** of page when parsing a cell. - ** - ** The following block of code checks early to see if a cell extends - ** past the end of a page boundary and causes SQLITE_CORRUPT to be - ** returned if it does. - */ - iCellFirst = cellOffset + 2*pPage->nCell; + iCellFirst = hdr + 8 + pPage->childPtrSize + 2*pPage->nCell; iCellLast = usableSize - 4; - if( pBt->db->flags & SQLITE_CellSizeCk ){ - int i; /* Index into the cell pointer array */ - int sz; /* Size of a cell */ - - if( !pPage->leaf ) iCellLast--; - for(i=0; inCell; i++){ - pc = get2byteAligned(&data[cellOffset+i*2]); - testcase( pc==iCellFirst ); - testcase( pc==iCellLast ); - if( pciCellLast ){ - return SQLITE_CORRUPT_PAGE(pPage); - } - sz = pPage->xCellSize(pPage, &data[pc]); - testcase( pc+sz==usableSize ); - if( pc+sz>usableSize ){ - return SQLITE_CORRUPT_PAGE(pPage); - } - } - if( !pPage->leaf ) iCellLast++; - } /* Compute the total free space on the page ** EVIDENCE-OF: R-23588-34450 The two-byte integer at offset 1 gives the @@ -63955,11 +71603,11 @@ static int btreeInitPage(MemPage *pPage){ nFree = data[hdr+7] + top; /* Init nFree to non-freeblock free space */ if( pc>0 ){ u32 next, size; - if( pciCellLast ){ @@ -63989,11 +71637,104 @@ static int btreeInitPage(MemPage *pPage){ ** serves to verify that the offset to the start of the cell-content ** area, according to the page header, lies within the page. */ - if( nFree>usableSize ){ + if( nFree>usableSize || nFreenFree = (u16)(nFree - iCellFirst); + return SQLITE_OK; +} + +/* +** Do additional sanity check after btreeInitPage() if +** PRAGMA cell_size_check=ON +*/ +static SQLITE_NOINLINE int btreeCellSizeCheck(MemPage *pPage){ + int iCellFirst; /* First allowable cell or freeblock offset */ + int iCellLast; /* Last possible cell or freeblock offset */ + int i; /* Index into the cell pointer array */ + int sz; /* Size of a cell */ + int pc; /* Address of a freeblock within pPage->aData[] */ + u8 *data; /* Equal to pPage->aData */ + int usableSize; /* Maximum usable space on the page */ + int cellOffset; /* Start of cell content area */ + + iCellFirst = pPage->cellOffset + 2*pPage->nCell; + usableSize = pPage->pBt->usableSize; + iCellLast = usableSize - 4; + data = pPage->aData; + cellOffset = pPage->cellOffset; + if( !pPage->leaf ) iCellLast--; + for(i=0; inCell; i++){ + pc = get2byteAligned(&data[cellOffset+i*2]); + testcase( pc==iCellFirst ); + testcase( pc==iCellLast ); + if( pciCellLast ){ + return SQLITE_CORRUPT_PAGE(pPage); + } + sz = pPage->xCellSize(pPage, &data[pc]); + testcase( pc+sz==usableSize ); + if( pc+sz>usableSize ){ + return SQLITE_CORRUPT_PAGE(pPage); + } + } + return SQLITE_OK; +} + +/* +** Initialize the auxiliary information for a disk block. +** +** Return SQLITE_OK on success. If we see that the page does +** not contain a well-formed database page, then return +** SQLITE_CORRUPT. Note that a return of SQLITE_OK does not +** guarantee that the page is well-formed. It only shows that +** we failed to detect any corruption. +*/ +static int btreeInitPage(MemPage *pPage){ + u8 *data; /* Equal to pPage->aData */ + BtShared *pBt; /* The main btree structure */ + + assert( pPage->pBt!=0 ); + assert( pPage->pBt->db!=0 ); + assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) ); + assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) ); + assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) ); + assert( pPage->isInit==0 ); + + pBt = pPage->pBt; + data = pPage->aData + pPage->hdrOffset; + /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating + ** the b-tree page type. */ + if( decodeFlags(pPage, data[0]) ){ + return SQLITE_CORRUPT_PAGE(pPage); + } + assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); + pPage->maskPage = (u16)(pBt->pageSize - 1); + pPage->nOverflow = 0; + pPage->cellOffset = pPage->hdrOffset + 8 + pPage->childPtrSize; + pPage->aCellIdx = data + pPage->childPtrSize + 8; + pPage->aDataEnd = pPage->aData + pBt->pageSize; + pPage->aDataOfst = pPage->aData + pPage->childPtrSize; + /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the + ** number of cells on the page. */ + pPage->nCell = get2byte(&data[3]); + if( pPage->nCell>MX_CELL(pBt) ){ + /* To many cells for a single page. The page must be corrupt */ + return SQLITE_CORRUPT_PAGE(pPage); + } + testcase( pPage->nCell==MX_CELL(pBt) ); + /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only + ** possible for a root page of a table that contains no rows) then the + ** offset to the cell content area will equal the page size minus the + ** bytes of reserved space. */ + assert( pPage->nCell>0 + || get2byteNotZero(&data[5])==(int)pBt->usableSize + || CORRUPT_DB ); + pPage->nFree = -1; /* Indicate that this value is yet uncomputed */ pPage->isInit = 1; + if( pBt->db->flags & SQLITE_CellSizeCk ){ + return btreeCellSizeCheck(pPage); + } return SQLITE_OK; } @@ -64007,7 +71748,7 @@ static void zeroPage(MemPage *pPage, int flags){ u8 hdr = pPage->hdrOffset; u16 first; - assert( sqlite3PagerPagenumber(pPage->pDbPage)==pPage->pgno ); + assert( sqlite3PagerPagenumber(pPage->pDbPage)==pPage->pgno || CORRUPT_DB ); assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); assert( sqlite3PagerGetData(pPage->pDbPage) == data ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); @@ -64023,7 +71764,7 @@ static void zeroPage(MemPage *pPage, int flags){ pPage->nFree = (u16)(pBt->usableSize - first); decodeFlags(pPage, flags); pPage->cellOffset = first; - pPage->aDataEnd = &data[pBt->usableSize]; + pPage->aDataEnd = &data[pBt->pageSize]; pPage->aCellIdx = &data[first]; pPage->aDataOfst = &data[pPage->childPtrSize]; pPage->nOverflow = 0; @@ -64048,7 +71789,7 @@ static MemPage *btreePageFromDbPage(DbPage *pDbPage, Pgno pgno, BtShared *pBt){ pPage->hdrOffset = pgno==1 ? 100 : 0; } assert( pPage->aData==sqlite3PagerGetData(pDbPage) ); - return pPage; + return pPage; } /* @@ -64101,76 +71842,48 @@ static MemPage *btreePageLookup(BtShared *pBt, Pgno pgno){ static Pgno btreePagecount(BtShared *pBt){ return pBt->nPage; } -SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree *p){ +SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree *p){ assert( sqlite3BtreeHoldsMutex(p) ); - assert( ((p->pBt->nPage)&0x80000000)==0 ); return btreePagecount(p->pBt); } /* ** Get a page from the pager and initialize it. -** -** If pCur!=0 then the page is being fetched as part of a moveToChild() -** call. Do additional sanity checking on the page in this case. -** And if the fetch fails, this routine must decrement pCur->iPage. -** -** The page is fetched as read-write unless pCur is not NULL and is -** a read-only cursor. -** -** If an error occurs, then *ppPage is undefined. It -** may remain unchanged, or it may be set to an invalid value. */ static int getAndInitPage( BtShared *pBt, /* The database file */ Pgno pgno, /* Number of the page to get */ MemPage **ppPage, /* Write the page pointer here */ - BtCursor *pCur, /* Cursor to receive the page, or NULL */ int bReadOnly /* True for a read-only page */ ){ int rc; DbPage *pDbPage; + MemPage *pPage; assert( sqlite3_mutex_held(pBt->mutex) ); - assert( pCur==0 || ppPage==&pCur->pPage ); - assert( pCur==0 || bReadOnly==pCur->curPagerFlags ); - assert( pCur==0 || pCur->iPage>0 ); if( pgno>btreePagecount(pBt) ){ - rc = SQLITE_CORRUPT_BKPT; - goto getAndInitPage_error; + *ppPage = 0; + return SQLITE_CORRUPT_BKPT; } rc = sqlite3PagerGet(pBt->pPager, pgno, (DbPage**)&pDbPage, bReadOnly); if( rc ){ - goto getAndInitPage_error; + *ppPage = 0; + return rc; } - *ppPage = (MemPage*)sqlite3PagerGetExtra(pDbPage); - if( (*ppPage)->isInit==0 ){ + pPage = (MemPage*)sqlite3PagerGetExtra(pDbPage); + if( pPage->isInit==0 ){ btreePageFromDbPage(pDbPage, pgno, pBt); - rc = btreeInitPage(*ppPage); + rc = btreeInitPage(pPage); if( rc!=SQLITE_OK ){ - releasePage(*ppPage); - goto getAndInitPage_error; + releasePage(pPage); + *ppPage = 0; + return rc; } } - assert( (*ppPage)->pgno==pgno ); - assert( (*ppPage)->aData==sqlite3PagerGetData(pDbPage) ); - - /* If obtaining a child page for a cursor, we must verify that the page is - ** compatible with the root page. */ - if( pCur && ((*ppPage)->nCell<1 || (*ppPage)->intKey!=pCur->curIntKey) ){ - rc = SQLITE_CORRUPT_PGNO(pgno); - releasePage(*ppPage); - goto getAndInitPage_error; - } + assert( pPage->pgno==pgno || CORRUPT_DB ); + assert( pPage->aData==sqlite3PagerGetData(pDbPage) ); + *ppPage = pPage; return SQLITE_OK; - -getAndInitPage_error: - if( pCur ){ - pCur->iPage--; - pCur->pPage = pCur->apPage[pCur->iPage]; - } - testcase( pgno==0 ); - assert( pgno!=0 || rc==SQLITE_CORRUPT ); - return rc; } /* @@ -64253,7 +71966,7 @@ static void pageReinit(DbPage *pData){ ** call to btreeInitPage() will likely return SQLITE_CORRUPT. ** But no harm is done by this. And it is very important that ** btreeInitPage() be called on every btree page so we make - ** the call for every page that comes in for re-initing. */ + ** the call for every page that comes in for re-initializing. */ btreeInitPage(pPage); } } @@ -64266,17 +71979,16 @@ static int btreeInvokeBusyHandler(void *pArg){ BtShared *pBt = (BtShared*)pArg; assert( pBt->db ); assert( sqlite3_mutex_held(pBt->db->mutex) ); - return sqlite3InvokeBusyHandler(&pBt->db->busyHandler, - sqlite3PagerFile(pBt->pPager)); + return sqlite3InvokeBusyHandler(&pBt->db->busyHandler); } /* ** Open a database file. -** +** ** zFilename is the name of the database file. If zFilename is NULL ** then an ephemeral database is created. The ephemeral database might ** be exclusively in memory, or it might use a disk-based memory cache. -** Either way, the ephemeral database will be automatically deleted +** Either way, the ephemeral database will be automatically deleted ** when sqlite3BtreeClose() is called. ** ** If zFilename is ":memory:" then an in-memory database is created @@ -64309,7 +72021,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( /* True if opening an ephemeral, temporary database */ const int isTempDb = zFilename==0 || zFilename[0]==0; - /* Set the variable isMemdb to true for an in-memory database, or + /* Set the variable isMemdb to true for an in-memory database, or ** false for a file-based database. */ #ifdef SQLITE_OMIT_MEMORYDB @@ -64371,15 +72083,19 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( rc = sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname); if( rc ){ - sqlite3_free(zFullPathname); - sqlite3_free(p); - return rc; + if( rc==SQLITE_OK_SYMLINK ){ + rc = SQLITE_OK; + }else{ + sqlite3_free(zFullPathname); + sqlite3_free(p); + return rc; + } } } #if SQLITE_THREADSAFE mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN); sqlite3_mutex_enter(mutexOpen); - mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); sqlite3_mutex_enter(mutexShared); #endif for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){ @@ -64428,7 +72144,10 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( assert( sizeof(u32)==4 ); assert( sizeof(u16)==2 ); assert( sizeof(Pgno)==4 ); - + + /* Suppress false-positive compiler warning from PVS-Studio */ + memset(&zDbHeader[16], 0, 8); + pBt = sqlite3MallocZero( sizeof(*pBt) ); if( pBt==0 ){ rc = SQLITE_NOMEM_BKPT; @@ -64447,7 +72166,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( pBt->db = db; sqlite3PagerSetBusyHandler(pBt->pPager, btreeInvokeBusyHandler, pBt); p->pBt = pBt; - + pBt->pCursor = 0; pBt->pPage1 = 0; if( sqlite3PagerIsreadonly(pBt->pPager) ) pBt->btsFlags |= BTS_READ_ONLY; @@ -64491,14 +72210,14 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( if( rc ) goto btree_open_out; pBt->usableSize = pBt->pageSize - nReserve; assert( (pBt->pageSize & 7)==0 ); /* 8-byte alignment of pageSize */ - + #if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO) /* Add the new BtShared object to the linked list sharable BtShareds. */ pBt->nRef = 1; if( p->sharable ){ MUTEX_LOGIC( sqlite3_mutex *mutexShared; ) - MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);) + MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);) if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){ pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST); if( pBt->mutex==0 ){ @@ -64563,7 +72282,7 @@ btree_open_out: ** do not change the pager-cache size. */ if( sqlite3BtreeSchema(p, 0, 0)==0 ){ - sqlite3PagerSetCachesize(p->pBt->pPager, SQLITE_DEFAULT_CACHE_SIZE); + sqlite3BtreeSetCacheSize(p, SQLITE_DEFAULT_CACHE_SIZE); } pFile = sqlite3PagerFile(pBt->pPager); @@ -64587,13 +72306,13 @@ btree_open_out: */ static int removeFromSharingList(BtShared *pBt){ #ifndef SQLITE_OMIT_SHARED_CACHE - MUTEX_LOGIC( sqlite3_mutex *pMaster; ) + MUTEX_LOGIC( sqlite3_mutex *pMainMtx; ) BtShared *pList; int removed = 0; assert( sqlite3_mutex_notheld(pBt->mutex) ); - MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) - sqlite3_mutex_enter(pMaster); + MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); ) + sqlite3_mutex_enter(pMainMtx); pBt->nRef--; if( pBt->nRef<=0 ){ if( GLOBAL(BtShared*,sqlite3SharedCacheList)==pBt ){ @@ -64612,7 +72331,7 @@ static int removeFromSharingList(BtShared *pBt){ } removed = 1; } - sqlite3_mutex_leave(pMaster); + sqlite3_mutex_leave(pMainMtx); return removed; #else return 1; @@ -64620,34 +72339,42 @@ static int removeFromSharingList(BtShared *pBt){ } /* -** Make sure pBt->pTmpSpace points to an allocation of +** Make sure pBt->pTmpSpace points to an allocation of ** MX_CELL_SIZE(pBt) bytes with a 4-byte prefix for a left-child ** pointer. */ -static void allocateTempSpace(BtShared *pBt){ - if( !pBt->pTmpSpace ){ - pBt->pTmpSpace = sqlite3PageMalloc( pBt->pageSize ); - - /* One of the uses of pBt->pTmpSpace is to format cells before - ** inserting them into a leaf page (function fillInCell()). If - ** a cell is less than 4 bytes in size, it is rounded up to 4 bytes - ** by the various routines that manipulate binary cells. Which - ** can mean that fillInCell() only initializes the first 2 or 3 - ** bytes of pTmpSpace, but that the first 4 bytes are copied from - ** it into a database page. This is not actually a problem, but it - ** does cause a valgrind error when the 1 or 2 bytes of unitialized - ** data is passed to system call write(). So to avoid this error, - ** zero the first 4 bytes of temp space here. - ** - ** Also: Provide four bytes of initialized space before the - ** beginning of pTmpSpace as an area available to prepend the - ** left-child pointer to the beginning of a cell. - */ - if( pBt->pTmpSpace ){ - memset(pBt->pTmpSpace, 0, 8); - pBt->pTmpSpace += 4; - } +static SQLITE_NOINLINE int allocateTempSpace(BtShared *pBt){ + assert( pBt!=0 ); + assert( pBt->pTmpSpace==0 ); + /* This routine is called only by btreeCursor() when allocating the + ** first write cursor for the BtShared object */ + assert( pBt->pCursor!=0 && (pBt->pCursor->curFlags & BTCF_WriteFlag)!=0 ); + pBt->pTmpSpace = sqlite3PageMalloc( pBt->pageSize ); + if( pBt->pTmpSpace==0 ){ + BtCursor *pCur = pBt->pCursor; + pBt->pCursor = pCur->pNext; /* Unlink the cursor */ + memset(pCur, 0, sizeof(*pCur)); + return SQLITE_NOMEM_BKPT; } + + /* One of the uses of pBt->pTmpSpace is to format cells before + ** inserting them into a leaf page (function fillInCell()). If + ** a cell is less than 4 bytes in size, it is rounded up to 4 bytes + ** by the various routines that manipulate binary cells. Which + ** can mean that fillInCell() only initializes the first 2 or 3 + ** bytes of pTmpSpace, but that the first 4 bytes are copied from + ** it into a database page. This is not actually a problem, but it + ** does cause a valgrind error when the 1 or 2 bytes of uninitialized + ** data is passed to system call write(). So to avoid this error, + ** zero the first 4 bytes of temp space here. + ** + ** Also: Provide four bytes of initialized space before the + ** beginning of pTmpSpace as an area available to prepend the + ** left-child pointer to the beginning of a cell. + */ + memset(pBt->pTmpSpace, 0, 8); + pBt->pTmpSpace += 4; + return SQLITE_OK; } /* @@ -64666,19 +72393,23 @@ static void freeTempSpace(BtShared *pBt){ */ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){ BtShared *pBt = p->pBt; - BtCursor *pCur; /* Close all cursors opened via this handle. */ assert( sqlite3_mutex_held(p->db->mutex) ); sqlite3BtreeEnter(p); - pCur = pBt->pCursor; - while( pCur ){ - BtCursor *pTmp = pCur; - pCur = pCur->pNext; - if( pTmp->pBtree==p ){ - sqlite3BtreeCloseCursor(pTmp); + + /* Verify that no other cursors have this Btree open */ +#ifdef SQLITE_DEBUG + { + BtCursor *pCur = pBt->pCursor; + while( pCur ){ + BtCursor *pTmp = pCur; + pCur = pCur->pNext; + assert( pTmp->pBtree!=p ); + } } +#endif /* Rollback any active transaction and free the handle structure. ** The call to sqlite3BtreeRollback() drops any table-locks held by @@ -64688,7 +72419,7 @@ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){ sqlite3BtreeLeave(p); /* If there are still other outstanding references to the shared-btree - ** structure, return now. The remainder of this procedure cleans + ** structure, return now. The remainder of this procedure cleans ** up the shared-btree. */ assert( p->wantToLock==0 && p->locked==0 ); @@ -64794,7 +72525,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags( /* ** Change the default pages size and the number of reserved bytes per page. -** Or, if the page size has already been fixed, return SQLITE_READONLY +** Or, if the page size has already been fixed, return SQLITE_READONLY ** without changing anything. ** ** The page size must be a power of 2 between 512 and 65536. If the page @@ -64814,24 +72545,23 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags( */ SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){ int rc = SQLITE_OK; + int x; BtShared *pBt = p->pBt; - assert( nReserve>=-1 && nReserve<=255 ); + assert( nReserve>=0 && nReserve<=255 ); sqlite3BtreeEnter(p); -#if SQLITE_HAS_CODEC - if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve; -#endif + pBt->nReserveWanted = nReserve; + x = pBt->pageSize - pBt->usableSize; + if( nReservebtsFlags & BTS_PAGESIZE_FIXED ){ sqlite3BtreeLeave(p); return SQLITE_READONLY; } - if( nReserve<0 ){ - nReserve = pBt->pageSize - pBt->usableSize; - } assert( nReserve>=0 && nReserve<=255 ); if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE && ((pageSize-1)&pageSize)==0 ){ assert( (pageSize & 7)==0 ); assert( !pBt->pCursor ); + if( nReserve>32 && pageSize==512 ) pageSize = 1024; pBt->pageSize = (u32)pageSize; freeTempSpace(pBt); } @@ -64855,7 +72585,7 @@ SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree *p){ ** held. ** ** This is useful in one special case in the backup API code where it is -** known that the shared b-tree mutex is held, but the mutex on the +** known that the shared b-tree mutex is held, but the mutex on the ** database handle that owns *p is not. In this case if sqlite3BtreeEnter() ** were to be called, it might collide with some other operation on the ** database handle that owns *p, causing undefined behavior. @@ -64869,22 +72599,20 @@ SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p){ /* ** Return the number of bytes of space at the end of every page that -** are intentually left unused. This is the "reserved" space that is +** are intentionally left unused. This is the "reserved" space that is ** sometimes used by extensions. ** -** If SQLITE_HAS_MUTEX is defined then the number returned is the -** greater of the current reserved space and the maximum requested -** reserve space. +** The value returned is the larger of the current reserve size and +** the latest reserve size requested by SQLITE_FILECTRL_RESERVE_BYTES. +** The amount of reserve can only grow - never shrink. */ -SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){ - int n; +SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree *p){ + int n1, n2; sqlite3BtreeEnter(p); - n = sqlite3BtreeGetReserveNoMutex(p); -#ifdef SQLITE_HAS_CODEC - if( npBt->optimalReserve ) n = p->pBt->optimalReserve; -#endif + n1 = (int)p->pBt->nReserveWanted; + n2 = sqlite3BtreeGetReserveNoMutex(p); sqlite3BtreeLeave(p); - return n; + return n1>n2 ? n1 : n2; } @@ -64893,8 +72621,8 @@ SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){ ** No changes are made if mxPage is 0 or negative. ** Regardless of the value of mxPage, return the maximum page count. */ -SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree *p, int mxPage){ - int n; +SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree *p, Pgno mxPage){ + Pgno n; sqlite3BtreeEnter(p); n = sqlite3PagerMaxPageCount(p->pBt->pPager, mxPage); sqlite3BtreeLeave(p); @@ -64937,7 +72665,7 @@ SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree *p, int newFlag){ /* ** Change the 'auto-vacuum' property of the database. If the 'autoVacuum' ** parameter is non-zero, then auto-vacuum mode is enabled. If zero, it -** is disabled. The default value for the auto-vacuum property is +** is disabled. The default value for the auto-vacuum property is ** determined by the SQLITE_DEFAULT_AUTOVACUUM macro. */ SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){ @@ -64961,7 +72689,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){ } /* -** Return the value of the 'auto-vacuum' property. If auto-vacuum is +** Return the value of the 'auto-vacuum' property. If auto-vacuum is ** enabled 1 is returned. Otherwise 0. */ SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *p){ @@ -64993,9 +72721,9 @@ static void setDefaultSyncFlag(BtShared *pBt, u8 safety_level){ Db *pDb; if( (db=pBt->db)!=0 && (pDb=db->aDb)!=0 ){ while( pDb->pBt==0 || pDb->pBt->pBt!=pBt ){ pDb++; } - if( pDb->bSyncSet==0 - && pDb->safety_level!=safety_level - && pDb!=&db->aDb[1] + if( pDb->bSyncSet==0 + && pDb->safety_level!=safety_level + && pDb!=&db->aDb[1] ){ pDb->safety_level = safety_level; sqlite3PagerSetFlags(pBt->pPager, @@ -65018,14 +72746,13 @@ static int newDatabase(BtShared*); ** SQLITE_OK is returned on success. If the file is not a ** well-formed database file, then SQLITE_CORRUPT is returned. ** SQLITE_BUSY is returned if the database is locked. SQLITE_NOMEM -** is returned if we run out of memory. +** is returned if we run out of memory. */ static int lockBtree(BtShared *pBt){ int rc; /* Result code from subfunctions */ MemPage *pPage1; /* Page 1 of the database file */ - int nPage; /* Number of pages in the database */ - int nPageFile = 0; /* Number of pages in the database file */ - int nPageHeader; /* Number of pages in the database according to hdr */ + u32 nPage; /* Number of pages in the database */ + u32 nPageFile = 0; /* Number of pages in the database file */ assert( sqlite3_mutex_held(pBt->mutex) ); assert( pBt->pPage1==0 ); @@ -65035,10 +72762,10 @@ static int lockBtree(BtShared *pBt){ if( rc!=SQLITE_OK ) return rc; /* Do some checking to help insure the file we opened really is - ** a valid database file. + ** a valid database file. */ - nPage = nPageHeader = get4byte(28+(u8*)pPage1->aData); - sqlite3PagerPagecount(pBt->pPager, &nPageFile); + nPage = get4byte(28+(u8*)pPage1->aData); + sqlite3PagerPagecount(pBt->pPager, (int*)&nPageFile); if( nPage==0 || memcmp(24+(u8*)pPage1->aData, 92+(u8*)pPage1->aData,4)!=0 ){ nPage = nPageFile; } @@ -65072,8 +72799,8 @@ static int lockBtree(BtShared *pBt){ goto page1_init_failed; } - /* If the write version is set to 2, this database should be accessed - ** in WAL mode. If the log is not already open, open it now. Then + /* If the read version is set to 2, this database should be accessed + ** in WAL mode. If the log is not already open, open it now. Then ** return SQLITE_OK and return without populating BtShared.pPage1. ** The caller detects this and calls this function again. This is ** required as the version of page 1 currently in the page1 buffer @@ -65114,15 +72841,15 @@ static int lockBtree(BtShared *pBt){ /* EVIDENCE-OF: R-25008-21688 The size of a page is a power of two ** between 512 and 65536 inclusive. */ if( ((pageSize-1)&pageSize)!=0 - || pageSize>SQLITE_MAX_PAGE_SIZE - || pageSize<=256 + || pageSize>SQLITE_MAX_PAGE_SIZE + || pageSize<=256 ){ goto page1_init_failed; } assert( (pageSize & 7)==0 ); /* EVIDENCE-OF: R-59310-51205 The "reserved space" size in the 1-byte ** integer at offset 20 is the number of bytes of space at the end of - ** each page to reserve for extensions. + ** each page to reserve for extensions. ** ** EVIDENCE-OF: R-37497-42412 The size of the reserved region is ** determined by the one-byte unsigned integer found at an offset of 20 @@ -65138,14 +72865,19 @@ static int lockBtree(BtShared *pBt){ releasePageOne(pPage1); pBt->usableSize = usableSize; pBt->pageSize = pageSize; + pBt->btsFlags |= BTS_PAGESIZE_FIXED; freeTempSpace(pBt); rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, pageSize-usableSize); return rc; } - if( (pBt->db->flags & SQLITE_WriteSchema)==0 && nPage>nPageFile ){ - rc = SQLITE_CORRUPT_BKPT; - goto page1_init_failed; + if( nPage>nPageFile ){ + if( sqlite3WritableSchema(pBt->db)==0 ){ + rc = SQLITE_CORRUPT_BKPT; + goto page1_init_failed; + }else{ + nPage = nPageFile; + } } /* EVIDENCE-OF: R-28312-64704 However, the usable size is not allowed to ** be less than 480. In other words, if the page size is 512, then the @@ -65153,6 +72885,7 @@ static int lockBtree(BtShared *pBt){ if( usableSize<480 ){ goto page1_init_failed; } + pBt->btsFlags |= BTS_PAGESIZE_FIXED; pBt->pageSize = pageSize; pBt->usableSize = usableSize; #ifndef SQLITE_OMIT_AUTOVACUUM @@ -65212,7 +72945,7 @@ static int countValidCursors(BtShared *pBt, int wrOnly){ int r = 0; for(pCur=pBt->pCursor; pCur; pCur=pCur->pNext){ if( (wrOnly==0 || (pCur->curFlags & BTCF_WriteFlag)!=0) - && pCur->eState!=CURSOR_FAULT ) r++; + && pCur->eState!=CURSOR_FAULT ) r++; } return r; } @@ -65221,7 +72954,7 @@ static int countValidCursors(BtShared *pBt, int wrOnly){ /* ** If there are no outstanding cursors and we are not in the middle ** of a transaction but there is a read lock on the database, then -** this routine unrefs the first page of the database file which +** this routine unrefs the first page of the database file which ** has the effect of releasing the read lock. ** ** If there is a transaction in progress, this routine is a no-op. @@ -65305,8 +73038,8 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){ ** upgraded to exclusive by calling this routine a second time - the ** exclusivity flag only works for a new transaction. ** -** A write-transaction must be started before attempting any -** changes to the database. None of the following routines +** A write-transaction must be started before attempting any +** changes to the database. None of the following routines ** will work unless a transaction is started first: ** ** sqlite3BtreeCreateTable() @@ -65320,7 +73053,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){ ** If an initial attempt to acquire the lock fails because of lock contention ** and the database was previously unlocked, then invoke the busy handler ** if there is one. But if there was previously a read-lock, do not -** invoke the busy handler - just return SQLITE_BUSY. SQLITE_BUSY is +** invoke the busy handler - just return SQLITE_BUSY. SQLITE_BUSY is ** returned when there is already a read-lock in order to avoid a deadlock. ** ** Suppose there are two processes A and B. A has a read lock and B has @@ -65331,8 +73064,13 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){ ** when A already has a read lock, we encourage A to give up and let B ** proceed. */ -SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ +static SQLITE_NOINLINE int btreeBeginTrans( + Btree *p, /* The btree in which to start the transaction */ + int wrflag, /* True to start a write transaction */ + int *pSchemaVersion /* Put schema version number here, if not NULL */ +){ BtShared *pBt = p->pBt; + Pager *pPager = pBt->pPager; int rc = SQLITE_OK; sqlite3BtreeEnter(p); @@ -65347,6 +73085,12 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ } assert( pBt->inTransaction==TRANS_WRITE || IfNotOmitAV(pBt->bDoTruncate)==0 ); + if( (p->db->flags & SQLITE_ResetDatabase) + && sqlite3PagerIsreadonly(pPager)==0 + ){ + pBt->btsFlags &= ~BTS_READ_ONLY; + } + /* Write transactions are not possible on a read-only database */ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 && wrflag ){ rc = SQLITE_READONLY; @@ -65356,7 +73100,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ #ifndef SQLITE_OMIT_SHARED_CACHE { sqlite3 *pBlock = 0; - /* If another database handle has already opened a write transaction + /* If another database handle has already opened a write transaction ** on this shared-btree structure and a second write transaction is ** requested, return SQLITE_LOCKED. */ @@ -65381,19 +73125,31 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ } #endif - /* Any read-only or read-write transaction implies a read-lock on - ** page 1. So if some other shared-cache client already has a write-lock + /* Any read-only or read-write transaction implies a read-lock on + ** page 1. So if some other shared-cache client already has a write-lock ** on page 1, the transaction cannot be opened. */ - rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); + rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK); if( SQLITE_OK!=rc ) goto trans_begun; pBt->btsFlags &= ~BTS_INITIALLY_EMPTY; if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY; do { + sqlite3PagerWalDb(pPager, p->db); + +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + /* If transitioning from no transaction directly to a write transaction, + ** block for the WRITER lock first if possible. */ + if( pBt->pPage1==0 && wrflag ){ + assert( pBt->inTransaction==TRANS_NONE ); + rc = sqlite3PagerWalWriteLock(pPager, 1); + if( rc!=SQLITE_BUSY && rc!=SQLITE_OK ) break; + } +#endif + /* Call lockBtree() until either pBt->pPage1 is populated or ** lockBtree() returns something other than SQLITE_OK. lockBtree() ** may return SQLITE_OK but leave pBt->pPage1 set to 0 if after - ** reading page 1 it discovers that the page-size of the database + ** reading page 1 it discovers that the page-size of the database ** file is not pBt->pageSize. In this case lockBtree() will update ** pBt->pageSize to the page-size of the file on disk. */ @@ -65403,19 +73159,28 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 ){ rc = SQLITE_READONLY; }else{ - rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db)); + rc = sqlite3PagerBegin(pPager, wrflag>1, sqlite3TempInMemory(p->db)); if( rc==SQLITE_OK ){ rc = newDatabase(pBt); + }else if( rc==SQLITE_BUSY_SNAPSHOT && pBt->inTransaction==TRANS_NONE ){ + /* if there was no transaction opened when this function was + ** called and SQLITE_BUSY_SNAPSHOT is returned, change the error + ** code to SQLITE_BUSY. */ + rc = SQLITE_BUSY; } } } - + if( rc!=SQLITE_OK ){ + (void)sqlite3PagerWalWriteLock(pPager, 0); unlockBtreeIfUnused(pBt); } }while( (rc&0xFF)==SQLITE_BUSY && pBt->inTransaction==TRANS_NONE && btreeInvokeBusyHandler(pBt) ); - sqlite3PagerResetLockTimeout(pBt->pPager); + sqlite3PagerWalDb(pPager, 0); +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY; +#endif if( rc==SQLITE_OK ){ if( p->inTrans==TRANS_NONE ){ @@ -65444,7 +73209,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ /* If the db-size header field is incorrect (as it may be if an old ** client has been writing the database file), update it now. Doing - ** this sooner rather than later means the database size can safely + ** this sooner rather than later means the database size can safely ** re-read the database size from page 1 if a savepoint or transaction ** rollback occurs within the transaction. */ @@ -65457,20 +73222,46 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ } } - trans_begun: - if( rc==SQLITE_OK && wrflag ){ - /* This call makes sure that the pager has the correct number of - ** open savepoints. If the second parameter is greater than 0 and - ** the sub-journal is not already open, then it will be opened here. - */ - rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint); + if( rc==SQLITE_OK ){ + if( pSchemaVersion ){ + *pSchemaVersion = get4byte(&pBt->pPage1->aData[40]); + } + if( wrflag ){ + /* This call makes sure that the pager has the correct number of + ** open savepoints. If the second parameter is greater than 0 and + ** the sub-journal is not already open, then it will be opened here. + */ + rc = sqlite3PagerOpenSavepoint(pPager, p->db->nSavepoint); + } } btreeIntegrity(p); sqlite3BtreeLeave(p); return rc; } +SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){ + BtShared *pBt; + if( p->sharable + || p->inTrans==TRANS_NONE + || (p->inTrans==TRANS_READ && wrflag!=0) + ){ + return btreeBeginTrans(p,wrflag,pSchemaVersion); + } + pBt = p->pBt; + if( pSchemaVersion ){ + *pSchemaVersion = get4byte(&pBt->pPage1->aData[40]); + } + if( wrflag ){ + /* This call makes sure that the pager has the correct number of + ** open savepoints. If the second parameter is greater than 0 and + ** the sub-journal is not already open, then it will be opened here. + */ + return sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint); + }else{ + return SQLITE_OK; + } +} #ifndef SQLITE_OMIT_AUTOVACUUM @@ -65494,7 +73285,7 @@ static int setChildPtrmaps(MemPage *pPage){ for(i=0; ileaf ){ Pgno childPgno = get4byte(pCell); @@ -65515,7 +73306,7 @@ static int setChildPtrmaps(MemPage *pPage){ ** that it points to iTo. Parameter eType describes the type of pointer to ** be modified, as follows: ** -** PTRMAP_BTREE: pPage is a btree-page. The pointer points at a child +** PTRMAP_BTREE: pPage is a btree-page. The pointer points at a child ** page of pPage. ** ** PTRMAP_OVERFLOW1: pPage is a btree-page. The pointer points at an overflow @@ -65557,15 +73348,18 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){ } } }else{ + if( pCell+4 > pPage->aData+pPage->pBt->usableSize ){ + return SQLITE_CORRUPT_PAGE(pPage); + } if( get4byte(pCell)==iFrom ){ put4byte(pCell, iTo); break; } } } - + if( i==nCell ){ - if( eType!=PTRMAP_BTREE || + if( eType!=PTRMAP_BTREE || get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){ return SQLITE_CORRUPT_PAGE(pPage); } @@ -65577,11 +73371,11 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){ /* -** Move the open database page pDbPage to location iFreePage in the +** Move the open database page pDbPage to location iFreePage in the ** database. The pDbPage reference remains valid. ** ** The isCommit flag indicates that there is no need to remember that -** the journal needs to be sync()ed before database page pDbPage->pgno +** the journal needs to be sync()ed before database page pDbPage->pgno ** can be written to. The caller has already promised not to write to that ** page. */ @@ -65598,13 +73392,14 @@ static int relocatePage( Pager *pPager = pBt->pPager; int rc; - assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 || + assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 || eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE ); assert( sqlite3_mutex_held(pBt->mutex) ); assert( pDbPage->pBt==pBt ); + if( iDbPage<3 ) return SQLITE_CORRUPT_BKPT; /* Move page iDbPage from its current location to page number iFreePage */ - TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n", + TRACE(("AUTOVACUUM: Moving %u to free page %u (ptr page %u type %u)\n", iDbPage, iFreePage, iPtrPage, eType)); rc = sqlite3PagerMovepage(pPager, pDbPage->pDbPage, iFreePage, isCommit); if( rc!=SQLITE_OK ){ @@ -65663,19 +73458,19 @@ static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8); /* ** Perform a single step of an incremental-vacuum. If successful, return -** SQLITE_OK. If there is no work to do (and therefore no point in -** calling this function again), return SQLITE_DONE. Or, if an error +** SQLITE_OK. If there is no work to do (and therefore no point in +** calling this function again), return SQLITE_DONE. Or, if an error ** occurs, return some other error code. ** -** More specifically, this function attempts to re-organize the database so +** More specifically, this function attempts to re-organize the database so ** that the last page of the file currently in use is no longer in use. ** ** Parameter nFin is the number of pages that this database would contain ** were this function called until it returns SQLITE_DONE. ** -** If the bCommit parameter is non-zero, this function assumes that the -** caller will keep calling incrVacuumStep() until it returns SQLITE_DONE -** or an error. bCommit is passed true for an auto-vacuum-on-commit +** If the bCommit parameter is non-zero, this function assumes that the +** caller will keep calling incrVacuumStep() until it returns SQLITE_DONE +** or an error. bCommit is passed true for an auto-vacuum-on-commit ** operation, or false for an incremental vacuum. */ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){ @@ -65706,7 +73501,7 @@ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){ if( bCommit==0 ){ /* Remove the page from the files free-list. This is not required ** if bCommit is non-zero. In that case, the free-list will be - ** truncated to zero after this function returns, so it doesn't + ** truncated to zero after this function returns, so it doesn't ** matter if it still contains some garbage entries. */ Pgno iFreePg; @@ -65742,15 +73537,20 @@ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){ } do { MemPage *pFreePg; + Pgno dbSize = btreePagecount(pBt); rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, iNear, eMode); if( rc!=SQLITE_OK ){ releasePage(pLastPg); return rc; } releasePage(pFreePg); + if( iFreePg>dbSize ){ + releasePage(pLastPg); + return SQLITE_CORRUPT_BKPT; + } }while( bCommit && iFreePg>nFin ); assert( iFreePgpPage1->aData[36]); Pgno nFin = finalDbSize(pBt, nOrig, nFree); - if( nOrig=nOrig ){ rc = SQLITE_CORRUPT_BKPT; }else if( nFree>0 ){ rc = saveAllCursors(pBt, 0, 0); @@ -65836,16 +73636,18 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *p){ /* ** This routine is called prior to sqlite3PagerCommit when a transaction ** is committed for an auto-vacuum database. -** -** If SQLITE_OK is returned, then *pnTrunc is set to the number of pages -** the database file should be truncated to during the commit process. -** i.e. the database has been reorganized so that only the first *pnTrunc -** pages are in use. */ -static int autoVacuumCommit(BtShared *pBt){ +static int autoVacuumCommit(Btree *p){ int rc = SQLITE_OK; - Pager *pPager = pBt->pPager; - VVA_ONLY( int nRef = sqlite3PagerRefcount(pPager); ) + Pager *pPager; + BtShared *pBt; + sqlite3 *db; + VVA_ONLY( int nRef ); + + assert( p!=0 ); + pBt = p->pBt; + pPager = pBt->pPager; + VVA_ONLY( nRef = sqlite3PagerRefcount(pPager); ) assert( sqlite3_mutex_held(pBt->mutex) ); invalidateAllOverflowCache(pBt); @@ -65853,6 +73655,7 @@ static int autoVacuumCommit(BtShared *pBt){ if( !pBt->incrVacuum ){ Pgno nFin; /* Number of pages in database after autovacuuming */ Pgno nFree; /* Number of pages on the freelist initially */ + Pgno nVac; /* Number of pages to vacuum */ Pgno iFree; /* The next page to be freed */ Pgno nOrig; /* Database size before freeing */ @@ -65866,18 +73669,42 @@ static int autoVacuumCommit(BtShared *pBt){ } nFree = get4byte(&pBt->pPage1->aData[36]); - nFin = finalDbSize(pBt, nOrig, nFree); + db = p->db; + if( db->xAutovacPages ){ + int iDb; + for(iDb=0; ALWAYS(iDbnDb); iDb++){ + if( db->aDb[iDb].pBt==p ) break; + } + nVac = db->xAutovacPages( + db->pAutovacPagesArg, + db->aDb[iDb].zDbSName, + nOrig, + nFree, + pBt->pageSize + ); + if( nVac>nFree ){ + nVac = nFree; + } + if( nVac==0 ){ + return SQLITE_OK; + } + }else{ + nVac = nFree; + } + nFin = finalDbSize(pBt, nOrig, nVac); if( nFin>nOrig ) return SQLITE_CORRUPT_BKPT; if( nFinnFin && rc==SQLITE_OK; iFree--){ - rc = incrVacuumStep(pBt, nFin, iFree, 1); + rc = incrVacuumStep(pBt, nFin, iFree, nVac==nFree); } if( (rc==SQLITE_DONE || rc==SQLITE_OK) && nFree>0 ){ rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - put4byte(&pBt->pPage1->aData[32], 0); - put4byte(&pBt->pPage1->aData[36], 0); + if( nVac==nFree ){ + put4byte(&pBt->pPage1->aData[32], 0); + put4byte(&pBt->pPage1->aData[36], 0); + } put4byte(&pBt->pPage1->aData[28], nFin); pBt->bDoTruncate = 1; pBt->nPage = nFin; @@ -65910,25 +73737,25 @@ static int autoVacuumCommit(BtShared *pBt){ ** ** This call is a no-op if no write-transaction is currently active on pBt. ** -** Otherwise, sync the database file for the btree pBt. zMaster points to -** the name of a master journal file that should be written into the -** individual journal file, or is NULL, indicating no master journal file +** Otherwise, sync the database file for the btree pBt. zSuperJrnl points to +** the name of a super-journal file that should be written into the +** individual journal file, or is NULL, indicating no super-journal file ** (single database transaction). ** -** When this is called, the master journal should already have been +** When this is called, the super-journal should already have been ** created, populated with this journal pointer and synced to disk. ** ** Once this is routine has returned, the only thing required to commit ** the write-transaction for this database file is to delete the journal. */ -SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){ +SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zSuperJrnl){ int rc = SQLITE_OK; if( p->inTrans==TRANS_WRITE ){ BtShared *pBt = p->pBt; sqlite3BtreeEnter(p); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ - rc = autoVacuumCommit(pBt); + rc = autoVacuumCommit(p); if( rc!=SQLITE_OK ){ sqlite3BtreeLeave(p); return rc; @@ -65938,7 +73765,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){ sqlite3PagerTruncateImage(pBt->pPager, pBt->nPage); } #endif - rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zMaster, 0); + rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zSuperJrnl, 0); sqlite3BtreeLeave(p); } return rc; @@ -65963,8 +73790,8 @@ static void btreeEndTransaction(Btree *p){ downgradeAllSharedCacheTableLocks(p); p->inTrans = TRANS_READ; }else{ - /* If the handle had any kind of transaction open, decrement the - ** transaction count of the shared btree. If the transaction count + /* If the handle had any kind of transaction open, decrement the + ** transaction count of the shared btree. If the transaction count ** reaches 0, set the shared state to TRANS_NONE. The unlockBtreeIfUnused() ** call below will unlock the pager. */ if( p->inTrans!=TRANS_NONE ){ @@ -65975,7 +73802,7 @@ static void btreeEndTransaction(Btree *p){ } } - /* Set the current transaction state to TRANS_NONE and unlock the + /* Set the current transaction state to TRANS_NONE and unlock the ** pager if this call closed the only read or write transaction. */ p->inTrans = TRANS_NONE; unlockBtreeIfUnused(pBt); @@ -65996,12 +73823,12 @@ static void btreeEndTransaction(Btree *p){ ** the rollback journal (which causes the transaction to commit) and ** drop locks. ** -** Normally, if an error occurs while the pager layer is attempting to +** Normally, if an error occurs while the pager layer is attempting to ** finalize the underlying journal file, this function returns an error and ** the upper layer will attempt a rollback. However, if the second argument -** is non-zero then this b-tree transaction is part of a multi-file -** transaction. In this case, the transaction has already been committed -** (by deleting a master journal file) and the caller will ignore this +** is non-zero then this b-tree transaction is part of a multi-file +** transaction. In this case, the transaction has already been committed +** (by deleting a super-journal file) and the caller will ignore this ** functions return code. So, even if an error occurs in the pager layer, ** reset the b-tree objects internal state to indicate that the write ** transaction has been closed. This is quite safe, as the pager will have @@ -66016,7 +73843,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){ sqlite3BtreeEnter(p); btreeIntegrity(p); - /* If the handle has a write-transaction open, commit the shared-btrees + /* If the handle has a write-transaction open, commit the shared-btrees ** transaction and set the shared state to TRANS_READ. */ if( p->inTrans==TRANS_WRITE ){ @@ -66029,7 +73856,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){ sqlite3BtreeLeave(p); return rc; } - p->iDataVersion--; /* Compensate for pPager->iDataVersion++; */ + p->iBDataVersion--; /* Compensate for pPager->iDataVersion++; */ pBt->inTransaction = TRANS_READ; btreeClearHasContent(pBt); } @@ -66065,15 +73892,15 @@ SQLITE_PRIVATE int sqlite3BtreeCommit(Btree *p){ ** ** This routine gets called when a rollback occurs. If the writeOnly ** flag is true, then only write-cursors need be tripped - read-only -** cursors save their current positions so that they may continue -** following the rollback. Or, if writeOnly is false, all cursors are +** cursors save their current positions so that they may continue +** following the rollback. Or, if writeOnly is false, all cursors are ** tripped. In general, writeOnly is false if the transaction being ** rolled back modified the database schema. In this case b-tree root ** pages may be moved or deleted from the database altogether, making ** it unsafe for read cursors to continue. ** -** If the writeOnly flag is true and an error is encountered while -** saving the current position of a read-only cursor, all cursors, +** If the writeOnly flag is true and an error is encountered while +** saving the current position of a read-only cursor, all cursors, ** including all read-cursors are tripped. ** ** SQLITE_OK is returned if successful, or if an error occurs while @@ -66107,6 +73934,18 @@ SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode, int wr return rc; } +/* +** Set the pBt->nPage field correctly, according to the current +** state of the database. Assume pBt->pPage1 is valid. +*/ +static void btreeSetNPage(BtShared *pBt, MemPage *pPage1){ + int nPage = get4byte(&pPage1->aData[28]); + testcase( nPage==0 ); + if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage); + testcase( pBt->nPage!=(u32)nPage ); + pBt->nPage = nPage; +} + /* ** Rollback the transaction in progress. ** @@ -66152,11 +73991,7 @@ SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){ ** call btreeGetPage() on page 1 again to make ** sure pPage1->aData is set correctly. */ if( btreeGetPage(pBt, 1, &pPage1, 0)==SQLITE_OK ){ - int nPage = get4byte(28+(u8*)pPage1->aData); - testcase( nPage==0 ); - if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage); - testcase( pBt->nPage!=nPage ); - pBt->nPage = nPage; + btreeSetNPage(pBt, pPage1); releasePageOne(pPage1); } assert( countValidCursors(pBt, 1)==0 ); @@ -66171,8 +74006,8 @@ SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){ /* ** Start a statement subtransaction. The subtransaction can be rolled -** back independently of the main transaction. You must start a transaction -** before starting a subtransaction. The subtransaction is ended automatically +** back independently of the main transaction. You must start a transaction +** before starting a subtransaction. The subtransaction is ended automatically ** if the main transaction commits or rolls back. ** ** Statement subtransactions are used around individual SQL statements @@ -66209,11 +74044,11 @@ SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree *p, int iStatement){ /* ** The second argument to this function, op, is always SAVEPOINT_ROLLBACK ** or SAVEPOINT_RELEASE. This function either releases or rolls back the -** savepoint identified by parameter iSavepoint, depending on the value +** savepoint identified by parameter iSavepoint, depending on the value ** of op. ** ** Normally, iSavepoint is greater than or equal to zero. However, if op is -** SAVEPOINT_ROLLBACK, then iSavepoint may also be -1. In this case the +** SAVEPOINT_ROLLBACK, then iSavepoint may also be -1. In this case the ** contents of the entire transaction are rolled back. This is different ** from a normal transaction rollback, as no locks are released and the ** transaction remains open. @@ -66236,12 +74071,11 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ pBt->nPage = 0; } rc = newDatabase(pBt); - pBt->nPage = get4byte(28 + pBt->pPage1->aData); + btreeSetNPage(pBt, pBt->pPage1); - /* The database size was written into the offset 28 of the header - ** when the transaction started, so we know that the value at offset - ** 28 is nonzero. */ - assert( pBt->nPage>0 ); + /* pBt->nPage might be zero if the database was corrupt when + ** the transaction was started. Otherwise, it must be at least 1. */ + assert( CORRUPT_DB || pBt->nPage>0 ); } sqlite3BtreeLeave(p); } @@ -66277,10 +74111,10 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ ** is set. If FORDELETE is set, that is a hint to the implementation that ** this cursor will only be used to seek to and delete entries of an index ** as part of a larger DELETE statement. The FORDELETE hint is not used by -** this implementation. But in a hypothetical alternative storage engine +** this implementation. But in a hypothetical alternative storage engine ** in which index entries are automatically deleted when corresponding table ** rows are deleted, the FORDELETE flag is a hint that all SEEK and DELETE -** operations on this cursor can be no-ops and all READ operations can +** operations on this cursor can be no-ops and all READ operations can ** return a null row (2-bytes: 0x01 0x00). ** ** No checking is done to make sure that page iTable really is the @@ -66292,7 +74126,7 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ */ static int btreeCursor( Btree *p, /* The btree */ - int iTable, /* Root page of table to open */ + Pgno iTable, /* Root page of table to open */ int wrFlag, /* 1 to write. 0 read-only */ struct KeyInfo *pKeyInfo, /* First arg to comparison function */ BtCursor *pCur /* Space for new cursor */ @@ -66301,16 +74135,17 @@ static int btreeCursor( BtCursor *pX; /* Looping over other all cursors */ assert( sqlite3BtreeHoldsMutex(p) ); - assert( wrFlag==0 - || wrFlag==BTREE_WRCSR - || wrFlag==(BTREE_WRCSR|BTREE_FORDELETE) + assert( wrFlag==0 + || wrFlag==BTREE_WRCSR + || wrFlag==(BTREE_WRCSR|BTREE_FORDELETE) ); - /* The following assert statements verify that if this is a sharable - ** b-tree database, the connection is holding the required table locks, - ** and that no other connection has any open cursor that conflicts with - ** this lock. */ - assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1)) ); + /* The following assert statements verify that if this is a sharable + ** b-tree database, the connection is holding the required table locks, + ** and that no other connection has any open cursor that conflicts with + ** this lock. The iTable<1 term disables the check for corrupt schemas. */ + assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1)) + || iTable<1 ); assert( wrFlag==0 || !hasReadConflicts(p, iTable) ); /* Assert that the caller has opened the required transaction. */ @@ -66319,53 +74154,68 @@ static int btreeCursor( assert( pBt->pPage1 && pBt->pPage1->aData ); assert( wrFlag==0 || (pBt->btsFlags & BTS_READ_ONLY)==0 ); - if( wrFlag ){ - allocateTempSpace(pBt); - if( pBt->pTmpSpace==0 ) return SQLITE_NOMEM_BKPT; - } - if( iTable==1 && btreePagecount(pBt)==0 ){ - assert( wrFlag==0 ); - iTable = 0; + if( iTable<=1 ){ + if( iTable<1 ){ + return SQLITE_CORRUPT_BKPT; + }else if( btreePagecount(pBt)==0 ){ + assert( wrFlag==0 ); + iTable = 0; + } } /* Now that no other errors can occur, finish filling in the BtCursor ** variables and link the cursor into the BtShared list. */ - pCur->pgnoRoot = (Pgno)iTable; + pCur->pgnoRoot = iTable; pCur->iPage = -1; pCur->pKeyInfo = pKeyInfo; pCur->pBtree = p; pCur->pBt = pBt; - pCur->curFlags = wrFlag ? BTCF_WriteFlag : 0; - pCur->curPagerFlags = wrFlag ? 0 : PAGER_GET_READONLY; + pCur->curFlags = 0; /* If there are two or more cursors on the same btree, then all such ** cursors *must* have the BTCF_Multiple flag set. */ for(pX=pBt->pCursor; pX; pX=pX->pNext){ - if( pX->pgnoRoot==(Pgno)iTable ){ + if( pX->pgnoRoot==iTable ){ pX->curFlags |= BTCF_Multiple; - pCur->curFlags |= BTCF_Multiple; + pCur->curFlags = BTCF_Multiple; } } + pCur->eState = CURSOR_INVALID; pCur->pNext = pBt->pCursor; pBt->pCursor = pCur; - pCur->eState = CURSOR_INVALID; + if( wrFlag ){ + pCur->curFlags |= BTCF_WriteFlag; + pCur->curPagerFlags = 0; + if( pBt->pTmpSpace==0 ) return allocateTempSpace(pBt); + }else{ + pCur->curPagerFlags = PAGER_GET_READONLY; + } return SQLITE_OK; } +static int btreeCursorWithLock( + Btree *p, /* The btree */ + Pgno iTable, /* Root page of table to open */ + int wrFlag, /* 1 to write. 0 read-only */ + struct KeyInfo *pKeyInfo, /* First arg to comparison function */ + BtCursor *pCur /* Space for new cursor */ +){ + int rc; + sqlite3BtreeEnter(p); + rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); + sqlite3BtreeLeave(p); + return rc; +} SQLITE_PRIVATE int sqlite3BtreeCursor( Btree *p, /* The btree */ - int iTable, /* Root page of table to open */ + Pgno iTable, /* Root page of table to open */ int wrFlag, /* 1 to write. 0 read-only */ struct KeyInfo *pKeyInfo, /* First arg to xCompare() */ BtCursor *pCur /* Write new cursor here */ ){ - int rc; - if( iTable<1 ){ - rc = SQLITE_CORRUPT_BKPT; + if( p->sharable ){ + return btreeCursorWithLock(p, iTable, wrFlag, pKeyInfo, pCur); }else{ - sqlite3BtreeEnter(p); - rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); - sqlite3BtreeLeave(p); + return btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); } - return rc; } /* @@ -66418,7 +74268,15 @@ SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor *pCur){ unlockBtreeIfUnused(pBt); sqlite3_free(pCur->aOverflow); sqlite3_free(pCur->pKey); - sqlite3BtreeLeave(pBtree); + if( (pBt->openFlags & BTREE_SINGLE) && pBt->pCursor==0 ){ + /* Since the BtShared is not sharable, there is no need to + ** worry about the missing sqlite3BtreeLeave() call here. */ + assert( pBtree->sharable==0 ); + sqlite3BtreeClose(pBtree); + }else{ + sqlite3BtreeLeave(pBtree); + } + pCur->pBtree = 0; } return SQLITE_OK; } @@ -66487,7 +74345,18 @@ SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor *pCur){ return pCur->info.nKey; } -#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC +/* +** Pin or unpin a cursor. +*/ +SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor *pCur){ + assert( (pCur->curFlags & BTCF_Pinned)==0 ); + pCur->curFlags |= BTCF_Pinned; +} +SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor *pCur){ + assert( (pCur->curFlags & BTCF_Pinned)!=0 ); + pCur->curFlags &= ~BTCF_Pinned; +} + /* ** Return the offset into the database file for the start of the ** payload to which the cursor is pointing. @@ -66499,7 +74368,6 @@ SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor *pCur){ return (i64)pCur->pBt->pageSize*((i64)pCur->pPage->pgno - 1) + (i64)(pCur->info.pPayload - pCur->pPage->aData); } -#endif /* SQLITE_ENABLE_OFFSET_SQL_FUNC */ /* ** Return the number of bytes of payload for the entry that pCur is @@ -66517,17 +74385,36 @@ SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor *pCur){ return pCur->info.nPayload; } +/* +** Return an upper bound on the size of any record for the table +** that the cursor is pointing into. +** +** This is an optimization. Everything will still work if this +** routine always returns 2147483647 (which is the largest record +** that SQLite can handle) or more. But returning a smaller value might +** prevent large memory allocations when trying to interpret a +** corrupt database. +** +** The current implementation merely returns the size of the underlying +** database file. +*/ +SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor *pCur){ + assert( cursorHoldsMutex(pCur) ); + assert( pCur->eState==CURSOR_VALID ); + return pCur->pBt->pageSize * (sqlite3_int64)pCur->pBt->nPage; +} + /* ** Given the page number of an overflow page in the database (parameter -** ovfl), this function finds the page number of the next page in the +** ovfl), this function finds the page number of the next page in the ** linked list of overflow pages. If possible, it uses the auto-vacuum -** pointer-map data instead of reading the content of page ovfl to do so. +** pointer-map data instead of reading the content of page ovfl to do so. ** ** If an error occurs an SQLite error code is returned. Otherwise: ** -** The page number of the next overflow page in the linked list is -** written to *pPgnoNext. If page ovfl is the last page in its linked -** list, *pPgnoNext is set to zero. +** The page number of the next overflow page in the linked list is +** written to *pPgnoNext. If page ovfl is the last page in its linked +** list, *pPgnoNext is set to zero. ** ** If ppPage is not NULL, and a reference to the MemPage object corresponding ** to page number pOvfl was obtained, then *ppPage is set to point to that @@ -66551,9 +74438,9 @@ static int getOverflowPage( #ifndef SQLITE_OMIT_AUTOVACUUM /* Try to find the next page in the overflow list using the - ** autovacuum pointer-map pages. Guess that the next page in - ** the overflow list is page number (ovfl+1). If that guess turns - ** out to be wrong, fall back to loading the data of page + ** autovacuum pointer-map pages. Guess that the next page in + ** the overflow list is page number (ovfl+1). If that guess turns + ** out to be wrong, fall back to loading the data of page ** number ovfl to determine the next page number. */ if( pBt->autoVacuum ){ @@ -66641,8 +74528,8 @@ static int copyPayload( ** ** If the current cursor entry uses one or more overflow pages ** this function may allocate space for and lazily populate -** the overflow page-list cache array (BtCursor.aOverflow). -** Subsequent calls use this cache to make seeking to the supplied offset +** the overflow page-list cache array (BtCursor.aOverflow). +** Subsequent calls use this cache to make seeking to the supplied offset ** more efficient. ** ** Once an overflow page-list cache has been allocated, it must be @@ -66658,7 +74545,7 @@ static int accessPayload( BtCursor *pCur, /* Cursor pointing to entry to read from */ u32 offset, /* Begin reading this far into payload */ u32 amt, /* Read this many bytes */ - unsigned char *pBuf, /* Write the bytes into this buffer */ + unsigned char *pBuf, /* Write the bytes into this buffer */ int eOp /* zero to read. non-zero to write. */ ){ unsigned char *aPayload; @@ -66673,7 +74560,9 @@ static int accessPayload( assert( pPage ); assert( eOp==0 || eOp==1 ); assert( pCur->eState==CURSOR_VALID ); - assert( pCur->ixnCell ); + if( pCur->ix>=pPage->nCell ){ + return SQLITE_CORRUPT_PAGE(pPage); + } assert( cursorHoldsMutex(pCur) ); getCellInfo(pCur); @@ -66749,6 +74638,7 @@ static int accessPayload( assert( rc==SQLITE_OK && amt>0 ); while( nextPage ){ /* If required, populate the overflow page-list cache. */ + if( nextPage > pBt->nPage ) return SQLITE_CORRUPT_BKPT; assert( pCur->aOverflow[iIdx]==0 || pCur->aOverflow[iIdx]==nextPage || CORRUPT_DB ); @@ -66773,9 +74663,6 @@ static int accessPayload( /* Need to read this page properly. It contains some of the ** range of data that is being read (eOp==0) or written (eOp!=0). */ -#ifdef SQLITE_DIRECT_OVERFLOW_READ - sqlite3_file *fd; /* File from which to do direct overflow read */ -#endif int a = amt; if( a + offset > ovflSize ){ a = ovflSize - offset; @@ -66784,12 +74671,12 @@ static int accessPayload( #ifdef SQLITE_DIRECT_OVERFLOW_READ /* If all the following are true: ** - ** 1) this is a read operation, and + ** 1) this is a read operation, and ** 2) data is required from the start of this overflow page, and - ** 3) there is no open write-transaction, and + ** 3) there are no dirty pages in the page-cache ** 4) the database is file-backed, and ** 5) the page is not in the WAL file - ** 6) at least 4 bytes have already been read into the output buffer + ** 6) at least 4 bytes have already been read into the output buffer ** ** then data can be read directly from the database file into the ** output buffer, bypassing the page-cache altogether. This speeds @@ -66797,16 +74684,16 @@ static int accessPayload( */ if( eOp==0 /* (1) */ && offset==0 /* (2) */ - && pBt->inTransaction==TRANS_READ /* (3) */ - && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (4) */ - && 0==sqlite3PagerUseWal(pBt->pPager, nextPage) /* (5) */ + && sqlite3PagerDirectReadOk(pBt->pPager, nextPage) /* (3,4,5) */ && &pBuf[-4]>=pBufStart /* (6) */ ){ + sqlite3_file *fd = sqlite3PagerFile(pBt->pPager); u8 aSave[4]; u8 *aWrite = &pBuf[-4]; assert( aWrite>=pBufStart ); /* due to (6) */ memcpy(aSave, aWrite, 4); rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1)); + if( rc && nextPage>pBt->nPage ) rc = SQLITE_CORRUPT_BKPT; nextPage = get4byte(aWrite); memcpy(aWrite, aSave, 4); }else @@ -66862,7 +74749,6 @@ SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor *pCur, u32 offset, u32 amt, void assert( cursorHoldsMutex(pCur) ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->iPage>=0 && pCur->pPage ); - assert( pCur->ixpPage->nCell ); return accessPayload(pCur, offset, amt, (unsigned char*)pBuf, 0); } @@ -66897,7 +74783,7 @@ SQLITE_PRIVATE int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 am #endif /* SQLITE_OMIT_INCRBLOB */ /* -** Return a pointer to payload information from the entry that the +** Return a pointer to payload information from the entry that the ** pCur cursor is pointing to. The pointer is to the beginning of ** the key if index btrees (pPage->intKey==0) and is the data for ** table btrees (pPage->intKey==1). The number of bytes of available @@ -66924,7 +74810,7 @@ static const void *fetchPayload( assert( pCur->eState==CURSOR_VALID ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); assert( cursorOwnsBtShared(pCur) ); - assert( pCur->ixpPage->nCell ); + assert( pCur->ixpPage->nCell || CORRUPT_DB ); assert( pCur->info.nSize>0 ); assert( pCur->info.pPayload>pCur->pPage->aData || CORRUPT_DB ); assert( pCur->info.pPayloadpPage->aDataEnd ||CORRUPT_DB); @@ -66969,8 +74855,7 @@ SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor *pCur, u32 *pAmt){ ** vice-versa). */ static int moveToChild(BtCursor *pCur, u32 newPgno){ - BtShared *pBt = pCur->pBt; - + int rc; assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->iPageapPage[pCur->iPage] = pCur->pPage; pCur->ix = 0; pCur->iPage++; - return getAndInitPage(pBt, newPgno, &pCur->pPage, pCur, pCur->curPagerFlags); + rc = getAndInitPage(pCur->pBt, newPgno, &pCur->pPage, pCur->curPagerFlags); + assert( pCur->pPage!=0 || rc!=SQLITE_OK ); + if( rc==SQLITE_OK + && (pCur->pPage->nCell<1 || pCur->pPage->intKey!=pCur->curIntKey) + ){ + releasePage(pCur->pPage); + rc = SQLITE_CORRUPT_PGNO(newPgno); + } + if( rc ){ + pCur->pPage = pCur->apPage[--pCur->iPage]; + } + return rc; } #ifdef SQLITE_DEBUG /* -** Page pParent is an internal (non-leaf) tree page. This function +** Page pParent is an internal (non-leaf) tree page. This function ** asserts that page number iChild is the left-child if the iIdx'th ** cell in page pParent. Or, if iIdx is equal to the total number of ** cells in pParent, that page number iChild is the right-child of @@ -67006,7 +74902,7 @@ static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){ } } #else -# define assertParentIndex(x,y,z) +# define assertParentIndex(x,y,z) #endif /* @@ -67024,8 +74920,8 @@ static void moveToParent(BtCursor *pCur){ assert( pCur->iPage>0 ); assert( pCur->pPage ); assertParentIndex( - pCur->apPage[pCur->iPage-1], - pCur->aiIdx[pCur->iPage-1], + pCur->apPage[pCur->iPage-1], + pCur->aiIdx[pCur->iPage-1], pCur->pPage->pgno ); testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell ); @@ -67042,19 +74938,19 @@ static void moveToParent(BtCursor *pCur){ ** ** If the table has a virtual root page, then the cursor is moved to point ** to the virtual root page instead of the actual root page. A table has a -** virtual root page when the actual root page contains no cells and a +** virtual root page when the actual root page contains no cells and a ** single child page. This can only happen with the table rooted at page 1. ** -** If the b-tree structure is empty, the cursor state is set to +** If the b-tree structure is empty, the cursor state is set to ** CURSOR_INVALID and this routine returns SQLITE_EMPTY. Otherwise, ** the cursor is set to point to the first cell located on the root ** (or virtual root) page and the cursor state is set to CURSOR_VALID. ** ** If this function returns successfully, it may be assumed that the -** page-header flags indicate that the [virtual] root-page is the expected +** page-header flags indicate that the [virtual] root-page is the expected ** kind of b-tree page (i.e. if when opening the cursor the caller did not ** specify a KeyInfo structure the flags byte is set to 0x05 or 0x0D, -** indicating a table b-tree, or if the caller did specify a KeyInfo +** indicating a table b-tree, or if the caller did specify a KeyInfo ** structure the flags byte is set to 0x02 or 0x0A, indicating an index ** b-tree). */ @@ -67075,7 +74971,7 @@ static int moveToRoot(BtCursor *pCur){ while( --pCur->iPage ){ releasePageNotNull(pCur->apPage[pCur->iPage]); } - pCur->pPage = pCur->apPage[0]; + pRoot = pCur->pPage = pCur->apPage[0]; goto skip_init; } }else if( pCur->pgnoRoot==0 ){ @@ -67090,8 +74986,8 @@ static int moveToRoot(BtCursor *pCur){ } sqlite3BtreeClearCursor(pCur); } - rc = getAndInitPage(pCur->pBtree->pBt, pCur->pgnoRoot, &pCur->pPage, - 0, pCur->curPagerFlags); + rc = getAndInitPage(pCur->pBt, pCur->pgnoRoot, &pCur->pPage, + pCur->curPagerFlags); if( rc!=SQLITE_OK ){ pCur->eState = CURSOR_INVALID; return rc; @@ -67100,29 +74996,28 @@ static int moveToRoot(BtCursor *pCur){ pCur->curIntKey = pCur->pPage->intKey; } pRoot = pCur->pPage; - assert( pRoot->pgno==pCur->pgnoRoot ); + assert( pRoot->pgno==pCur->pgnoRoot || CORRUPT_DB ); /* If pCur->pKeyInfo is not NULL, then the caller that opened this cursor ** expected to open it on an index b-tree. Otherwise, if pKeyInfo is ** NULL, the caller expects a table b-tree. If this is not the case, - ** return an SQLITE_CORRUPT error. + ** return an SQLITE_CORRUPT error. ** ** Earlier versions of SQLite assumed that this test could not fail ** if the root page was already loaded when this function was called (i.e. - ** if pCur->iPage>=0). But this is not so if the database is corrupted - ** in such a way that page pRoot is linked into a second b-tree table + ** if pCur->iPage>=0). But this is not so if the database is corrupted + ** in such a way that page pRoot is linked into a second b-tree table ** (or the freelist). */ assert( pRoot->intKey==1 || pRoot->intKey==0 ); if( pRoot->isInit==0 || (pCur->pKeyInfo==0)!=pRoot->intKey ){ return SQLITE_CORRUPT_PAGE(pCur->pPage); } -skip_init: +skip_init: pCur->ix = 0; pCur->info.nSize = 0; pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidNKey|BTCF_ValidOvfl); - pRoot = pCur->pPage; if( pRoot->nCell>0 ){ pCur->eState = CURSOR_VALID; }else if( !pRoot->leaf ){ @@ -67204,7 +75099,7 @@ SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){ *pRes = 0; rc = moveToLeftmost(pCur); }else if( rc==SQLITE_EMPTY ){ - assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 ); + assert( pCur->pgnoRoot==0 || (pCur->pPage!=0 && pCur->pPage->nCell==0) ); *pRes = 1; rc = SQLITE_OK; } @@ -67215,28 +75110,8 @@ SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){ ** on success. Set *pRes to 0 if the cursor actually points to something ** or set *pRes to 1 if the table is empty. */ -SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ - int rc; - - assert( cursorOwnsBtShared(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - - /* If the cursor already points to the last entry, this is a no-op. */ - if( CURSOR_VALID==pCur->eState && (pCur->curFlags & BTCF_AtLast)!=0 ){ -#ifdef SQLITE_DEBUG - /* This block serves to assert() that the cursor really does point - ** to the last entry in the b-tree. */ - int ii; - for(ii=0; iiiPage; ii++){ - assert( pCur->aiIdx[ii]==pCur->apPage[ii]->nCell ); - } - assert( pCur->ix==pCur->pPage->nCell-1 ); - assert( pCur->pPage->leaf ); -#endif - return SQLITE_OK; - } - - rc = moveToRoot(pCur); +static SQLITE_NOINLINE int btreeLast(BtCursor *pCur, int *pRes){ + int rc = moveToRoot(pCur); if( rc==SQLITE_OK ){ assert( pCur->eState==CURSOR_VALID ); *pRes = 0; @@ -67253,13 +75128,32 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ } return rc; } +SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ + assert( cursorOwnsBtShared(pCur) ); + assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); -/* Move the cursor so that it points to an entry near the key -** specified by pIdxKey or intKey. Return a success code. -** -** For INTKEY tables, the intKey parameter is used. pIdxKey -** must be NULL. For index tables, pIdxKey is used and intKey -** is ignored. + /* If the cursor already points to the last entry, this is a no-op. */ + if( CURSOR_VALID==pCur->eState && (pCur->curFlags & BTCF_AtLast)!=0 ){ +#ifdef SQLITE_DEBUG + /* This block serves to assert() that the cursor really does point + ** to the last entry in the b-tree. */ + int ii; + for(ii=0; iiiPage; ii++){ + assert( pCur->aiIdx[ii]==pCur->apPage[ii]->nCell ); + } + assert( pCur->ix==pCur->pPage->nCell-1 || CORRUPT_DB ); + testcase( pCur->ix!=pCur->pPage->nCell-1 ); + /* ^-- dbsqlfuzz b92b72e4de80b5140c30ab71372ca719b8feb618 */ + assert( pCur->pPage->leaf ); +#endif + *pRes = 0; + return SQLITE_OK; + } + return btreeLast(pCur, pRes); +} + +/* Move the cursor so that it points to an entry in a table (a.k.a INTKEY) +** table near the key intKey. Return a success code. ** ** If an exact match is not found, then the cursor is always ** left pointing at a leaf page which would hold the entry if it @@ -67267,44 +75161,37 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ ** before or after the key. ** ** An integer is written into *pRes which is the result of -** comparing the key with the entry to which the cursor is +** comparing the key with the entry to which the cursor is ** pointing. The meaning of the integer written into ** *pRes is as follows: ** ** *pRes<0 The cursor is left pointing at an entry that -** is smaller than intKey/pIdxKey or if the table is empty +** is smaller than intKey or if the table is empty ** and the cursor is therefore left point to nothing. ** ** *pRes==0 The cursor is left pointing at an entry that -** exactly matches intKey/pIdxKey. +** exactly matches intKey. ** ** *pRes>0 The cursor is left pointing at an entry that -** is larger than intKey/pIdxKey. -** -** For index tables, the pIdxKey->eqSeen field is set to 1 if there -** exists an entry in the table that exactly matches pIdxKey. +** is larger than intKey. */ -SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( +SQLITE_PRIVATE int sqlite3BtreeTableMoveto( BtCursor *pCur, /* The cursor to be moved */ - UnpackedRecord *pIdxKey, /* Unpacked index key */ i64 intKey, /* The table key */ int biasRight, /* If true, bias the search to the high end */ int *pRes /* Write search results here */ ){ int rc; - RecordCompare xRecordCompare; assert( cursorOwnsBtShared(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); assert( pRes ); - assert( (pIdxKey==0)==(pCur->pKeyInfo==0) ); - assert( pCur->eState!=CURSOR_VALID || (pIdxKey==0)==(pCur->curIntKey!=0) ); + assert( pCur->pKeyInfo==0 ); + assert( pCur->eState!=CURSOR_VALID || pCur->curIntKey!=0 ); /* If the cursor is already positioned at the point we are trying ** to move to, then just return without doing any work */ - if( pIdxKey==0 - && pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0 - ){ + if( pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0 ){ if( pCur->info.nKey==intKey ){ *pRes = 0; return SQLITE_OK; @@ -67317,8 +75204,8 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( /* If the requested key is one more than the previous key, then ** try to get there using sqlite3BtreeNext() rather than a full ** binary search. This is an optimization only. The correct answer - ** is still obtained without this case, only a little more slowely */ - if( pCur->info.nKey+1==intKey && !pCur->skipNext ){ + ** is still obtained without this case, only a little more slowly. */ + if( pCur->info.nKey+1==intKey ){ *pRes = 0; rc = sqlite3BtreeNext(pCur, 0); if( rc==SQLITE_OK ){ @@ -67326,25 +75213,16 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( if( pCur->info.nKey==intKey ){ return SQLITE_OK; } - }else if( rc==SQLITE_DONE ){ - rc = SQLITE_OK; - }else{ + }else if( rc!=SQLITE_DONE ){ return rc; } } } } - if( pIdxKey ){ - xRecordCompare = sqlite3VdbeFindCompare(pIdxKey); - pIdxKey->errCode = 0; - assert( pIdxKey->default_rc==1 - || pIdxKey->default_rc==0 - || pIdxKey->default_rc==-1 - ); - }else{ - xRecordCompare = 0; /* All keys are integers */ - } +#ifdef SQLITE_DEBUG + pCur->pBtree->nSeek++; /* Performance measurement during testing */ +#endif rc = moveToRoot(pCur); if( rc ){ @@ -67360,7 +75238,8 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( assert( pCur->eState==CURSOR_VALID ); assert( pCur->pPage->nCell > 0 ); assert( pCur->iPage==0 || pCur->apPage[0]->intKey==pCur->curIntKey ); - assert( pCur->curIntKey || pIdxKey ); + assert( pCur->curIntKey ); + for(;;){ int lwr, upr, idx, c; Pgno chldPg; @@ -67374,142 +75253,55 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( ** be the right kind (index or table) of b-tree page. Otherwise ** a moveToChild() or moveToRoot() call would have detected corruption. */ assert( pPage->nCell>0 ); - assert( pPage->intKey==(pIdxKey==0) ); + assert( pPage->intKey ); lwr = 0; upr = pPage->nCell-1; assert( biasRight==0 || biasRight==1 ); idx = upr>>(1-biasRight); /* idx = biasRight ? upr : (lwr+upr)/2; */ - pCur->ix = (u16)idx; - if( xRecordCompare==0 ){ - for(;;){ - i64 nCellKey; - pCell = findCellPastPtr(pPage, idx); - if( pPage->intKeyLeaf ){ - while( 0x80 <= *(pCell++) ){ - if( pCell>=pPage->aDataEnd ){ - return SQLITE_CORRUPT_PAGE(pPage); - } + for(;;){ + i64 nCellKey; + pCell = findCellPastPtr(pPage, idx); + if( pPage->intKeyLeaf ){ + while( 0x80 <= *(pCell++) ){ + if( pCell>=pPage->aDataEnd ){ + return SQLITE_CORRUPT_PAGE(pPage); } } - getVarint(pCell, (u64*)&nCellKey); - if( nCellKeyupr ){ c = -1; break; } - }else if( nCellKey>intKey ){ - upr = idx-1; - if( lwr>upr ){ c = +1; break; } - }else{ - assert( nCellKey==intKey ); - pCur->ix = (u16)idx; - if( !pPage->leaf ){ - lwr = idx; - goto moveto_next_layer; - }else{ - pCur->curFlags |= BTCF_ValidNKey; - pCur->info.nKey = nCellKey; - pCur->info.nSize = 0; - *pRes = 0; - return SQLITE_OK; - } - } - assert( lwr+upr>=0 ); - idx = (lwr+upr)>>1; /* idx = (lwr+upr)/2; */ } - }else{ - for(;;){ - int nCell; /* Size of the pCell cell in bytes */ - pCell = findCellPastPtr(pPage, idx); - - /* The maximum supported page-size is 65536 bytes. This means that - ** the maximum number of record bytes stored on an index B-Tree - ** page is less than 16384 bytes and may be stored as a 2-byte - ** varint. This information is used to attempt to avoid parsing - ** the entire cell by checking for the cases where the record is - ** stored entirely within the b-tree page by inspecting the first - ** 2 bytes of the cell. - */ - nCell = pCell[0]; - if( nCell<=pPage->max1bytePayload ){ - /* This branch runs if the record-size field of the cell is a - ** single byte varint and the record fits entirely on the main - ** b-tree page. */ - testcase( pCell+nCell+1==pPage->aDataEnd ); - c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey); - }else if( !(pCell[1] & 0x80) - && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal - ){ - /* The record-size field is a 2 byte varint and the record - ** fits entirely on the main b-tree page. */ - testcase( pCell+nCell+2==pPage->aDataEnd ); - c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey); + getVarint(pCell, (u64*)&nCellKey); + if( nCellKeyupr ){ c = -1; break; } + }else if( nCellKey>intKey ){ + upr = idx-1; + if( lwr>upr ){ c = +1; break; } + }else{ + assert( nCellKey==intKey ); + pCur->ix = (u16)idx; + if( !pPage->leaf ){ + lwr = idx; + goto moveto_table_next_layer; }else{ - /* The record flows over onto one or more overflow pages. In - ** this case the whole cell needs to be parsed, a buffer allocated - ** and accessPayload() used to retrieve the record into the - ** buffer before VdbeRecordCompare() can be called. - ** - ** If the record is corrupt, the xRecordCompare routine may read - ** up to two varints past the end of the buffer. An extra 18 - ** bytes of padding is allocated at the end of the buffer in - ** case this happens. */ - void *pCellKey; - u8 * const pCellBody = pCell - pPage->childPtrSize; - pPage->xParseCell(pPage, pCellBody, &pCur->info); - nCell = (int)pCur->info.nKey; - testcase( nCell<0 ); /* True if key size is 2^32 or more */ - testcase( nCell==0 ); /* Invalid key size: 0x80 0x80 0x00 */ - testcase( nCell==1 ); /* Invalid key size: 0x80 0x80 0x01 */ - testcase( nCell==2 ); /* Minimum legal index key size */ - if( nCell<2 ){ - rc = SQLITE_CORRUPT_PAGE(pPage); - goto moveto_finish; - } - pCellKey = sqlite3Malloc( nCell+18 ); - if( pCellKey==0 ){ - rc = SQLITE_NOMEM_BKPT; - goto moveto_finish; - } - pCur->ix = (u16)idx; - rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0); - pCur->curFlags &= ~BTCF_ValidOvfl; - if( rc ){ - sqlite3_free(pCellKey); - goto moveto_finish; - } - c = xRecordCompare(nCell, pCellKey, pIdxKey); - sqlite3_free(pCellKey); - } - assert( - (pIdxKey->errCode!=SQLITE_CORRUPT || c==0) - && (pIdxKey->errCode!=SQLITE_NOMEM || pCur->pBtree->db->mallocFailed) - ); - if( c<0 ){ - lwr = idx+1; - }else if( c>0 ){ - upr = idx-1; - }else{ - assert( c==0 ); + pCur->curFlags |= BTCF_ValidNKey; + pCur->info.nKey = nCellKey; + pCur->info.nSize = 0; *pRes = 0; - rc = SQLITE_OK; - pCur->ix = (u16)idx; - if( pIdxKey->errCode ) rc = SQLITE_CORRUPT_BKPT; - goto moveto_finish; + return SQLITE_OK; } - if( lwr>upr ) break; - assert( lwr+upr>=0 ); - idx = (lwr+upr)>>1; /* idx = (lwr+upr)/2 */ } + assert( lwr+upr>=0 ); + idx = (lwr+upr)>>1; /* idx = (lwr+upr)/2; */ } - assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) ); + assert( lwr==upr+1 || !pPage->leaf ); assert( pPage->isInit ); if( pPage->leaf ){ assert( pCur->ixpPage->nCell ); pCur->ix = (u16)idx; *pRes = c; rc = SQLITE_OK; - goto moveto_finish; + goto moveto_table_finish; } -moveto_next_layer: +moveto_table_next_layer: if( lwr>=pPage->nCell ){ chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]); }else{ @@ -67519,7 +75311,326 @@ moveto_next_layer: rc = moveToChild(pCur, chldPg); if( rc ) break; } -moveto_finish: +moveto_table_finish: + pCur->info.nSize = 0; + assert( (pCur->curFlags & BTCF_ValidOvfl)==0 ); + return rc; +} + +/* +** Compare the "idx"-th cell on the page the cursor pCur is currently +** pointing to to pIdxKey using xRecordCompare. Return negative or +** zero if the cell is less than or equal pIdxKey. Return positive +** if unknown. +** +** Return value negative: Cell at pCur[idx] less than pIdxKey +** +** Return value is zero: Cell at pCur[idx] equals pIdxKey +** +** Return value positive: Nothing is known about the relationship +** of the cell at pCur[idx] and pIdxKey. +** +** This routine is part of an optimization. It is always safe to return +** a positive value as that will cause the optimization to be skipped. +*/ +static int indexCellCompare( + BtCursor *pCur, + int idx, + UnpackedRecord *pIdxKey, + RecordCompare xRecordCompare +){ + MemPage *pPage = pCur->pPage; + int c; + int nCell; /* Size of the pCell cell in bytes */ + u8 *pCell = findCellPastPtr(pPage, idx); + + nCell = pCell[0]; + if( nCell<=pPage->max1bytePayload ){ + /* This branch runs if the record-size field of the cell is a + ** single byte varint and the record fits entirely on the main + ** b-tree page. */ + testcase( pCell+nCell+1==pPage->aDataEnd ); + c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey); + }else if( !(pCell[1] & 0x80) + && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal + ){ + /* The record-size field is a 2 byte varint and the record + ** fits entirely on the main b-tree page. */ + testcase( pCell+nCell+2==pPage->aDataEnd ); + c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey); + }else{ + /* If the record extends into overflow pages, do not attempt + ** the optimization. */ + c = 99; + } + return c; +} + +/* +** Return true (non-zero) if pCur is current pointing to the last +** page of a table. +*/ +static int cursorOnLastPage(BtCursor *pCur){ + int i; + assert( pCur->eState==CURSOR_VALID ); + for(i=0; iiPage; i++){ + MemPage *pPage = pCur->apPage[i]; + if( pCur->aiIdx[i]nCell ) return 0; + } + return 1; +} + +/* Move the cursor so that it points to an entry in an index table +** near the key pIdxKey. Return a success code. +** +** If an exact match is not found, then the cursor is always +** left pointing at a leaf page which would hold the entry if it +** were present. The cursor might point to an entry that comes +** before or after the key. +** +** An integer is written into *pRes which is the result of +** comparing the key with the entry to which the cursor is +** pointing. The meaning of the integer written into +** *pRes is as follows: +** +** *pRes<0 The cursor is left pointing at an entry that +** is smaller than pIdxKey or if the table is empty +** and the cursor is therefore left point to nothing. +** +** *pRes==0 The cursor is left pointing at an entry that +** exactly matches pIdxKey. +** +** *pRes>0 The cursor is left pointing at an entry that +** is larger than pIdxKey. +** +** The pIdxKey->eqSeen field is set to 1 if there +** exists an entry in the table that exactly matches pIdxKey. +*/ +SQLITE_PRIVATE int sqlite3BtreeIndexMoveto( + BtCursor *pCur, /* The cursor to be moved */ + UnpackedRecord *pIdxKey, /* Unpacked index key */ + int *pRes /* Write search results here */ +){ + int rc; + RecordCompare xRecordCompare; + + assert( cursorOwnsBtShared(pCur) ); + assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); + assert( pRes ); + assert( pCur->pKeyInfo!=0 ); + +#ifdef SQLITE_DEBUG + pCur->pBtree->nSeek++; /* Performance measurement during testing */ +#endif + + xRecordCompare = sqlite3VdbeFindCompare(pIdxKey); + pIdxKey->errCode = 0; + assert( pIdxKey->default_rc==1 + || pIdxKey->default_rc==0 + || pIdxKey->default_rc==-1 + ); + + + /* Check to see if we can skip a lot of work. Two cases: + ** + ** (1) If the cursor is already pointing to the very last cell + ** in the table and the pIdxKey search key is greater than or + ** equal to that last cell, then no movement is required. + ** + ** (2) If the cursor is on the last page of the table and the first + ** cell on that last page is less than or equal to the pIdxKey + ** search key, then we can start the search on the current page + ** without needing to go back to root. + */ + if( pCur->eState==CURSOR_VALID + && pCur->pPage->leaf + && cursorOnLastPage(pCur) + ){ + int c; + if( pCur->ix==pCur->pPage->nCell-1 + && (c = indexCellCompare(pCur, pCur->ix, pIdxKey, xRecordCompare))<=0 + && pIdxKey->errCode==SQLITE_OK + ){ + *pRes = c; + return SQLITE_OK; /* Cursor already pointing at the correct spot */ + } + if( pCur->iPage>0 + && indexCellCompare(pCur, 0, pIdxKey, xRecordCompare)<=0 + && pIdxKey->errCode==SQLITE_OK + ){ + pCur->curFlags &= ~BTCF_ValidOvfl; + if( !pCur->pPage->isInit ){ + return SQLITE_CORRUPT_BKPT; + } + goto bypass_moveto_root; /* Start search on the current page */ + } + pIdxKey->errCode = SQLITE_OK; + } + + rc = moveToRoot(pCur); + if( rc ){ + if( rc==SQLITE_EMPTY ){ + assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 ); + *pRes = -1; + return SQLITE_OK; + } + return rc; + } + +bypass_moveto_root: + assert( pCur->pPage ); + assert( pCur->pPage->isInit ); + assert( pCur->eState==CURSOR_VALID ); + assert( pCur->pPage->nCell > 0 ); + assert( pCur->curIntKey==0 ); + assert( pIdxKey!=0 ); + for(;;){ + int lwr, upr, idx, c; + Pgno chldPg; + MemPage *pPage = pCur->pPage; + u8 *pCell; /* Pointer to current cell in pPage */ + + /* pPage->nCell must be greater than zero. If this is the root-page + ** the cursor would have been INVALID above and this for(;;) loop + ** not run. If this is not the root-page, then the moveToChild() routine + ** would have already detected db corruption. Similarly, pPage must + ** be the right kind (index or table) of b-tree page. Otherwise + ** a moveToChild() or moveToRoot() call would have detected corruption. */ + assert( pPage->nCell>0 ); + assert( pPage->intKey==0 ); + lwr = 0; + upr = pPage->nCell-1; + idx = upr>>1; /* idx = (lwr+upr)/2; */ + for(;;){ + int nCell; /* Size of the pCell cell in bytes */ + pCell = findCellPastPtr(pPage, idx); + + /* The maximum supported page-size is 65536 bytes. This means that + ** the maximum number of record bytes stored on an index B-Tree + ** page is less than 16384 bytes and may be stored as a 2-byte + ** varint. This information is used to attempt to avoid parsing + ** the entire cell by checking for the cases where the record is + ** stored entirely within the b-tree page by inspecting the first + ** 2 bytes of the cell. + */ + nCell = pCell[0]; + if( nCell<=pPage->max1bytePayload ){ + /* This branch runs if the record-size field of the cell is a + ** single byte varint and the record fits entirely on the main + ** b-tree page. */ + testcase( pCell+nCell+1==pPage->aDataEnd ); + c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey); + }else if( !(pCell[1] & 0x80) + && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal + ){ + /* The record-size field is a 2 byte varint and the record + ** fits entirely on the main b-tree page. */ + testcase( pCell+nCell+2==pPage->aDataEnd ); + c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey); + }else{ + /* The record flows over onto one or more overflow pages. In + ** this case the whole cell needs to be parsed, a buffer allocated + ** and accessPayload() used to retrieve the record into the + ** buffer before VdbeRecordCompare() can be called. + ** + ** If the record is corrupt, the xRecordCompare routine may read + ** up to two varints past the end of the buffer. An extra 18 + ** bytes of padding is allocated at the end of the buffer in + ** case this happens. */ + void *pCellKey; + u8 * const pCellBody = pCell - pPage->childPtrSize; + const int nOverrun = 18; /* Size of the overrun padding */ + pPage->xParseCell(pPage, pCellBody, &pCur->info); + nCell = (int)pCur->info.nKey; + testcase( nCell<0 ); /* True if key size is 2^32 or more */ + testcase( nCell==0 ); /* Invalid key size: 0x80 0x80 0x00 */ + testcase( nCell==1 ); /* Invalid key size: 0x80 0x80 0x01 */ + testcase( nCell==2 ); /* Minimum legal index key size */ + if( nCell<2 || nCell/pCur->pBt->usableSize>pCur->pBt->nPage ){ + rc = SQLITE_CORRUPT_PAGE(pPage); + goto moveto_index_finish; + } + pCellKey = sqlite3Malloc( nCell+nOverrun ); + if( pCellKey==0 ){ + rc = SQLITE_NOMEM_BKPT; + goto moveto_index_finish; + } + pCur->ix = (u16)idx; + rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0); + memset(((u8*)pCellKey)+nCell,0,nOverrun); /* Fix uninit warnings */ + pCur->curFlags &= ~BTCF_ValidOvfl; + if( rc ){ + sqlite3_free(pCellKey); + goto moveto_index_finish; + } + c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey); + sqlite3_free(pCellKey); + } + assert( + (pIdxKey->errCode!=SQLITE_CORRUPT || c==0) + && (pIdxKey->errCode!=SQLITE_NOMEM || pCur->pBtree->db->mallocFailed) + ); + if( c<0 ){ + lwr = idx+1; + }else if( c>0 ){ + upr = idx-1; + }else{ + assert( c==0 ); + *pRes = 0; + rc = SQLITE_OK; + pCur->ix = (u16)idx; + if( pIdxKey->errCode ) rc = SQLITE_CORRUPT_BKPT; + goto moveto_index_finish; + } + if( lwr>upr ) break; + assert( lwr+upr>=0 ); + idx = (lwr+upr)>>1; /* idx = (lwr+upr)/2 */ + } + assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) ); + assert( pPage->isInit ); + if( pPage->leaf ){ + assert( pCur->ixpPage->nCell || CORRUPT_DB ); + pCur->ix = (u16)idx; + *pRes = c; + rc = SQLITE_OK; + goto moveto_index_finish; + } + if( lwr>=pPage->nCell ){ + chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]); + }else{ + chldPg = get4byte(findCell(pPage, lwr)); + } + + /* This block is similar to an in-lined version of: + ** + ** pCur->ix = (u16)lwr; + ** rc = moveToChild(pCur, chldPg); + ** if( rc ) break; + */ + pCur->info.nSize = 0; + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl); + if( pCur->iPage>=(BTCURSOR_MAX_DEPTH-1) ){ + return SQLITE_CORRUPT_BKPT; + } + pCur->aiIdx[pCur->iPage] = (u16)lwr; + pCur->apPage[pCur->iPage] = pCur->pPage; + pCur->ix = 0; + pCur->iPage++; + rc = getAndInitPage(pCur->pBt, chldPg, &pCur->pPage, pCur->curPagerFlags); + if( rc==SQLITE_OK + && (pCur->pPage->nCell<1 || pCur->pPage->intKey!=pCur->curIntKey) + ){ + releasePage(pCur->pPage); + rc = SQLITE_CORRUPT_PGNO(chldPg); + } + if( rc ){ + pCur->pPage = pCur->apPage[--pCur->iPage]; + break; + } + /* + ***** End of in-lined moveToChild() call */ + } +moveto_index_finish: pCur->info.nSize = 0; assert( (pCur->curFlags & BTCF_ValidOvfl)==0 ); return rc; @@ -67543,7 +75654,7 @@ SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor *pCur){ /* ** Return an estimate for the number of rows in the table that pCur is -** pointing to. Return a negative number if no estimate is currently +** pointing to. Return a negative number if no estimate is currently ** available. */ SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor *pCur){ @@ -67567,7 +75678,7 @@ SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor *pCur){ } /* -** Advance the cursor to the next entry in the database. +** Advance the cursor to the next entry in the database. ** Return value: ** ** SQLITE_OK success @@ -67592,7 +75703,6 @@ static SQLITE_NOINLINE int btreeNext(BtCursor *pCur){ MemPage *pPage; assert( cursorOwnsBtShared(pCur) ); - assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); if( pCur->eState!=CURSOR_VALID ){ assert( (pCur->curFlags & BTCF_ValidOvfl)==0 ); rc = restoreCursorPosition(pCur); @@ -67602,27 +75712,18 @@ static SQLITE_NOINLINE int btreeNext(BtCursor *pCur){ if( CURSOR_INVALID==pCur->eState ){ return SQLITE_DONE; } - if( pCur->skipNext ){ - assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_SKIPNEXT ); + if( pCur->eState==CURSOR_SKIPNEXT ){ pCur->eState = CURSOR_VALID; - if( pCur->skipNext>0 ){ - pCur->skipNext = 0; - return SQLITE_OK; - } - pCur->skipNext = 0; + if( pCur->skipNext>0 ) return SQLITE_OK; } } pPage = pCur->pPage; idx = ++pCur->ix; - assert( pPage->isInit ); - - /* If the database file is corrupt, it is possible for the value of idx - ** to be invalid here. This can only occur if a second cursor modifies - ** the page while cursor pCur is holding a reference to it. Which can - ** only happen if the database is corrupt in such a way as to link the - ** page into more than one b-tree structure. */ - testcase( idx>pPage->nCell ); + if( sqlite3FaultSim(412) ) pPage->isInit = 0; + if( !pPage->isInit ){ + return SQLITE_CORRUPT_BKPT; + } if( idx>=pPage->nCell ){ if( !pPage->leaf ){ @@ -67655,7 +75756,6 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int flags){ UNUSED_PARAMETER( flags ); /* Used in COMDB2 but not native SQLite */ assert( cursorOwnsBtShared(pCur) ); assert( flags==0 || flags==1 ); - assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); pCur->info.nSize = 0; pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl); if( pCur->eState!=CURSOR_VALID ) return btreeNext(pCur); @@ -67696,7 +75796,6 @@ static SQLITE_NOINLINE int btreePrevious(BtCursor *pCur){ MemPage *pPage; assert( cursorOwnsBtShared(pCur) ); - assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); assert( (pCur->curFlags & (BTCF_AtLast|BTCF_ValidOvfl|BTCF_ValidNKey))==0 ); assert( pCur->info.nSize==0 ); if( pCur->eState!=CURSOR_VALID ){ @@ -67707,14 +75806,9 @@ static SQLITE_NOINLINE int btreePrevious(BtCursor *pCur){ if( CURSOR_INVALID==pCur->eState ){ return SQLITE_DONE; } - if( pCur->skipNext ){ - assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_SKIPNEXT ); + if( CURSOR_SKIPNEXT==pCur->eState ){ pCur->eState = CURSOR_VALID; - if( pCur->skipNext<0 ){ - pCur->skipNext = 0; - return SQLITE_OK; - } - pCur->skipNext = 0; + if( pCur->skipNext<0 ) return SQLITE_OK; } } @@ -67749,7 +75843,6 @@ static SQLITE_NOINLINE int btreePrevious(BtCursor *pCur){ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int flags){ assert( cursorOwnsBtShared(pCur) ); assert( flags==0 || flags==1 ); - assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); UNUSED_PARAMETER( flags ); /* Used in COMDB2 but not native SQLite */ pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidOvfl|BTCF_ValidNKey); pCur->info.nSize = 0; @@ -67774,7 +75867,7 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int flags){ ** SQLITE_OK is returned on success. Any other return value indicates ** an error. *ppPage is set to NULL in the event of an error. ** -** If the "nearby" parameter is not 0, then an effort is made to +** If the "nearby" parameter is not 0, then an effort is made to ** locate a page close to the page number "nearby". This can be used in an ** attempt to keep related pages close to each other in the database file, ** which in turn can make database access faster. @@ -67804,8 +75897,8 @@ static int allocateBtreePage( assert( eMode==BTALLOC_ANY || (nearby>0 && IfNotOmitAV(pBt->autoVacuum)) ); pPage1 = pBt->pPage1; mxPage = btreePagecount(pBt); - /* EVIDENCE-OF: R-05119-02637 The 4-byte big-endian integer at offset 36 - ** stores stores the total number of pages on the freelist. */ + /* EVIDENCE-OF: R-21003-45125 The 4-byte big-endian integer at offset 36 + ** stores the total number of pages on the freelist. */ n = get4byte(&pPage1->aData[36]); testcase( n==mxPage-1 ); if( n>=mxPage ){ @@ -67816,7 +75909,7 @@ static int allocateBtreePage( Pgno iTrunk; u8 searchList = 0; /* If the free-list must be searched for 'nearby' */ u32 nSearch = 0; /* Count of the number of search attempts */ - + /* If eMode==BTALLOC_EXACT and a query of the pointer-map ** shows that the page 'nearby' is somewhere on the free-list, then ** the entire-list will be searched for that page. @@ -67879,8 +75972,8 @@ static int allocateBtreePage( ** is the number of leaf page pointers to follow. */ k = get4byte(&pTrunk->aData[4]); if( k==0 && !searchList ){ - /* The trunk has no leaves and the list is not being searched. - ** So extract the trunk page itself and use it as the newly + /* The trunk has no leaves and the list is not being searched. + ** So extract the trunk page itself and use it as the newly ** allocated page */ assert( pPrevTrunk==0 ); rc = sqlite3PagerWrite(pTrunk->pDbPage); @@ -67891,14 +75984,14 @@ static int allocateBtreePage( memcpy(&pPage1->aData[32], &pTrunk->aData[0], 4); *ppPage = pTrunk; pTrunk = 0; - TRACE(("ALLOCATE: %d trunk - %d free pages left\n", *pPgno, n-1)); + TRACE(("ALLOCATE: %u trunk - %u free pages left\n", *pPgno, n-1)); }else if( k>(u32)(pBt->usableSize/4 - 2) ){ /* Value of k is out of range. Database corruption */ rc = SQLITE_CORRUPT_PGNO(iTrunk); goto end_allocate_page; #ifndef SQLITE_OMIT_AUTOVACUUM - }else if( searchList - && (nearby==iTrunk || (iTrunkaData[0], &pTrunk->aData[0], 4); } }else{ - /* The trunk page is required by the caller but it contains + /* The trunk page is required by the caller but it contains ** pointers to free-list leaves. The first leaf becomes a trunk ** page in this case. */ MemPage *pNewTrunk; Pgno iNewTrunk = get4byte(&pTrunk->aData[8]); - if( iNewTrunk>mxPage ){ + if( iNewTrunk>mxPage ){ rc = SQLITE_CORRUPT_PGNO(iTrunk); goto end_allocate_page; } @@ -67957,7 +76050,7 @@ static int allocateBtreePage( } } pTrunk = 0; - TRACE(("ALLOCATE: %d trunk - %d free pages left\n", *pPgno, n-1)); + TRACE(("ALLOCATE: %u trunk - %u free pages left\n", *pPgno, n-1)); #endif }else if( k>0 ){ /* Extract a leaf from the trunk */ @@ -67992,18 +76085,18 @@ static int allocateBtreePage( iPage = get4byte(&aData[8+closest*4]); testcase( iPage==mxPage ); - if( iPage>mxPage ){ + if( iPage>mxPage || iPage<2 ){ rc = SQLITE_CORRUPT_PGNO(iTrunk); goto end_allocate_page; } testcase( iPage==mxPage ); - if( !searchList - || (iPage==nearby || (iPagepgno, n-1)); rc = sqlite3PagerWrite(pTrunk->pDbPage); if( rc ) goto end_allocate_page; @@ -68039,7 +76132,7 @@ static int allocateBtreePage( ** not set the no-content flag. This causes the pager to load and journal ** the current page content before overwriting it. ** - ** Note that the pager will not actually attempt to load or journal + ** Note that the pager will not actually attempt to load or journal ** content for any page that really does lie past the end of the database ** file on disk. So the effects of disabling the no-content optimization ** here are confined to those pages that lie between the end of the @@ -68059,7 +76152,7 @@ static int allocateBtreePage( ** becomes a new pointer-map page, the second is used by the caller. */ MemPage *pPg = 0; - TRACE(("ALLOCATE: %d from end of file (pointer-map page)\n", pBt->nPage)); + TRACE(("ALLOCATE: %u from end of file (pointer-map page)\n", pBt->nPage)); assert( pBt->nPage!=PENDING_BYTE_PAGE(pBt) ); rc = btreeGetUnusedPage(pBt, pBt->nPage, &pPg, bNoContent); if( rc==SQLITE_OK ){ @@ -68082,10 +76175,10 @@ static int allocateBtreePage( releasePage(*ppPage); *ppPage = 0; } - TRACE(("ALLOCATE: %d from end of file\n", *pPgno)); + TRACE(("ALLOCATE: %u from end of file\n", *pPgno)); } - assert( *pPgno!=PENDING_BYTE_PAGE(pBt) ); + assert( CORRUPT_DB || *pPgno!=PENDING_BYTE_PAGE(pBt) ); end_allocate_page: releasePage(pTrunk); @@ -68096,12 +76189,12 @@ end_allocate_page: } /* -** This function is used to add page iPage to the database file free-list. +** This function is used to add page iPage to the database file free-list. ** It is assumed that the page is not already a part of the free-list. ** ** The value passed as the second argument to this function is optional. -** If the caller happens to have a pointer to the MemPage object -** corresponding to page iPage handy, it may pass it as the second value. +** If the caller happens to have a pointer to the MemPage object +** corresponding to page iPage handy, it may pass it as the second value. ** Otherwise, it may pass NULL. ** ** If a pointer to a MemPage object is passed as the second argument, @@ -68109,17 +76202,19 @@ end_allocate_page: */ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ MemPage *pTrunk = 0; /* Free-list trunk page */ - Pgno iTrunk = 0; /* Page number of free-list trunk page */ + Pgno iTrunk = 0; /* Page number of free-list trunk page */ MemPage *pPage1 = pBt->pPage1; /* Local reference to page 1 */ MemPage *pPage; /* Page being freed. May be NULL. */ int rc; /* Return Code */ - int nFree; /* Initial number of pages on free-list */ + u32 nFree; /* Initial number of pages on free-list */ assert( sqlite3_mutex_held(pBt->mutex) ); assert( CORRUPT_DB || iPage>1 ); assert( !pMemPage || pMemPage->pgno==iPage ); - if( iPage<2 ) return SQLITE_CORRUPT_BKPT; + if( iPage<2 || iPage>pBt->nPage ){ + return SQLITE_CORRUPT_BKPT; + } if( pMemPage ){ pPage = pMemPage; sqlite3PagerRef(pPage->pDbPage); @@ -68148,7 +76243,7 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ /* If the database supports auto-vacuum, write an entry in the pointer-map ** to indicate that the page is free. */ - if( ISAUTOVACUUM ){ + if( ISAUTOVACUUM(pBt) ){ ptrmapPut(pBt, iPage, PTRMAP_FREEPAGE, 0, &rc); if( rc ) goto freepage_out; } @@ -68164,6 +76259,10 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ u32 nLeaf; /* Initial number of leaf cells on trunk page */ iTrunk = get4byte(&pPage1->aData[32]); + if( iTrunk>btreePagecount(pBt) ){ + rc = SQLITE_CORRUPT_BKPT; + goto freepage_out; + } rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0); if( rc!=SQLITE_OK ){ goto freepage_out; @@ -68204,14 +76303,14 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ } rc = btreeSetHasContent(pBt, iPage); } - TRACE(("FREE-PAGE: %d leaf on trunk page %d\n",pPage->pgno,pTrunk->pgno)); + TRACE(("FREE-PAGE: %u leaf on trunk page %u\n",pPage->pgno,pTrunk->pgno)); goto freepage_out; } } /* If control flows to this point, then it was not possible to add the ** the page being freed as a leaf page of the first trunk in the free-list. - ** Possibly because the free-list is empty, or possibly because the + ** Possibly because the free-list is empty, or possibly because the ** first trunk in the free-list is full. Either way, the page being freed ** will become the new first trunk page in the free-list. */ @@ -68225,7 +76324,7 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ put4byte(pPage->aData, iTrunk); put4byte(&pPage->aData[4], 0); put4byte(&pPage1->aData[32], iPage); - TRACE(("FREE-PAGE: %d new trunk page replacing %d\n", pPage->pgno, iTrunk)); + TRACE(("FREE-PAGE: %u new trunk page replacing %u\n", pPage->pgno, iTrunk)); freepage_out: if( pPage ){ @@ -68242,10 +76341,9 @@ static void freePage(MemPage *pPage, int *pRC){ } /* -** Free any overflow pages associated with the given Cell. Store -** size information about the cell in pInfo. +** Free the overflow pages associated with the given Cell. */ -static int clearCell( +static SQLITE_NOINLINE int clearCellOverflow( MemPage *pPage, /* The page that contains the Cell */ unsigned char *pCell, /* First byte of the Cell */ CellInfo *pInfo /* Size information about the cell */ @@ -68257,10 +76355,7 @@ static int clearCell( u32 ovflPageSize; assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - pPage->xParseCell(pPage, pCell, pInfo); - if( pInfo->nLocal==pInfo->nPayload ){ - return SQLITE_OK; /* No overflow pages. Return without doing anything */ - } + assert( pInfo->nLocal!=pInfo->nPayload ); testcase( pCell + pInfo->nSize == pPage->aDataEnd ); testcase( pCell + (pInfo->nSize-1) == pPage->aDataEnd ); if( pCell + pInfo->nSize > pPage->aDataEnd ){ @@ -68272,15 +76367,15 @@ static int clearCell( assert( pBt->usableSize > 4 ); ovflPageSize = pBt->usableSize - 4; nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize; - assert( nOvfl>0 || + assert( nOvfl>0 || (CORRUPT_DB && (pInfo->nPayload + ovflPageSize)btreePagecount(pBt) ){ - /* 0 is not a legal page number and page 1 cannot be an - ** overflow page. Therefore if ovflPgno<2 or past the end of the + /* 0 is not a legal page number and page 1 cannot be an + ** overflow page. Therefore if ovflPgno<2 or past the end of the ** file the database must be corrupt. */ return SQLITE_CORRUPT_BKPT; } @@ -68292,11 +76387,11 @@ static int clearCell( if( ( pOvfl || ((pOvfl = btreePageLookup(pBt, ovflPgno))!=0) ) && sqlite3PagerPageRefcount(pOvfl->pDbPage)!=1 ){ - /* There is no reason any cursor should have an outstanding reference + /* There is no reason any cursor should have an outstanding reference ** to an overflow page belonging to a cell that is being deleted/updated. - ** So if there exists more than one reference to this page, then it - ** must not really be an overflow page and the database must be corrupt. - ** It is helpful to detect this before calling freePage2(), as + ** So if there exists more than one reference to this page, then it + ** must not really be an overflow page and the database must be corrupt. + ** It is helpful to detect this before calling freePage2(), as ** freePage2() may zero the page contents if secure-delete mode is ** enabled. If this 'overflow' page happens to be a page that the ** caller is iterating through or using in some other way, this @@ -68316,6 +76411,21 @@ static int clearCell( return SQLITE_OK; } +/* Call xParseCell to compute the size of a cell. If the cell contains +** overflow, then invoke cellClearOverflow to clear out that overflow. +** Store the result code (SQLITE_OK or some error code) in rc. +** +** Implemented as macro to force inlining for performance. +*/ +#define BTREE_CLEAR_CELL(rc, pPage, pCell, sInfo) \ + pPage->xParseCell(pPage, pCell, &sInfo); \ + if( sInfo.nLocal!=sInfo.nPayload ){ \ + rc = clearCellOverflow(pPage, pCell, &sInfo); \ + }else{ \ + rc = SQLITE_OK; \ + } + + /* ** Create the byte sequence used to represent a cell on page pPage ** and write that byte sequence into pCell[]. Overflow pages are @@ -68367,7 +76477,7 @@ static int fillInCell( pSrc = pX->pKey; nHeader += putVarint32(&pCell[nHeader], nPayload); } - + /* Fill in the payload */ pPayload = &pCell[nHeader]; if( nPayload<=pPage->maxLocal ){ @@ -68458,8 +76568,8 @@ static int fillInCell( if( pBt->autoVacuum ){ do{ pgnoOvfl++; - } while( - PTRMAP_ISPAGE(pBt, pgnoOvfl) || pgnoOvfl==PENDING_BYTE_PAGE(pBt) + } while( + PTRMAP_ISPAGE(pBt, pgnoOvfl) || pgnoOvfl==PENDING_BYTE_PAGE(pBt) ); } #endif @@ -68467,9 +76577,9 @@ static int fillInCell( #ifndef SQLITE_OMIT_AUTOVACUUM /* If the database supports auto-vacuum, and the second or subsequent ** overflow page is being allocated, add an entry to the pointer-map - ** for that page now. + ** for that page now. ** - ** If this is the first overflow page, then write a partial entry + ** If this is the first overflow page, then write a partial entry ** to the pointer-map. If we write nothing to this pointer-map slot, ** then the optimistic overflow chain processing in clearCell() ** may misinterpret the uninitialized values and delete the @@ -68526,15 +76636,18 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ int hdr; /* Beginning of the header. 0 most pages. 100 page 1 */ if( *pRC ) return; - assert( idx>=0 && idxnCell ); + assert( idx>=0 ); + assert( idxnCell ); assert( CORRUPT_DB || sz==cellSize(pPage, idx) ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + assert( pPage->nFree>=0 ); data = pPage->aData; ptr = &pPage->aCellIdx[2*idx]; + assert( pPage->pBt->usableSize > (u32)(ptr-data) ); pc = get2byte(ptr); hdr = pPage->hdrOffset; - testcase( pc==get2byte(&data[hdr+5]) ); + testcase( pc==(u32)get2byte(&data[hdr+5]) ); testcase( pc+sz==pPage->pBt->usableSize ); if( pc+sz > pPage->pBt->usableSize ){ *pRC = SQLITE_CORRUPT_BKPT; @@ -68567,47 +76680,136 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ ** will not fit, then make a copy of the cell content into pTemp if ** pTemp is not null. Regardless of pTemp, allocate a new entry ** in pPage->apOvfl[] and make it point to the cell content (either -** in pTemp or the original pCell) and also record its index. -** Allocating a new entry in pPage->aCell[] implies that +** in pTemp or the original pCell) and also record its index. +** Allocating a new entry in pPage->aCell[] implies that ** pPage->nOverflow is incremented. ** -** *pRC must be SQLITE_OK when this routine is called. +** The insertCellFast() routine below works exactly the same as +** insertCell() except that it lacks the pTemp and iChild parameters +** which are assumed zero. Other than that, the two routines are the +** same. +** +** Fixes or enhancements to this routine should be reflected in +** insertCellFast()! */ -static void insertCell( +static int insertCell( MemPage *pPage, /* Page into which we are copying */ int i, /* New cell becomes the i-th cell of the page */ u8 *pCell, /* Content of the new cell */ int sz, /* Bytes of content in pCell */ u8 *pTemp, /* Temp storage space for pCell, if needed */ - Pgno iChild, /* If non-zero, replace first 4 bytes with this value */ - int *pRC /* Read and write return code from here */ + Pgno iChild /* If non-zero, replace first 4 bytes with this value */ ){ int idx = 0; /* Where to write new cell content in data[] */ int j; /* Loop counter */ u8 *data; /* The content of the whole page */ u8 *pIns; /* The point in pPage->aCellIdx[] where no cell inserted */ - assert( *pRC==SQLITE_OK ); assert( i>=0 && i<=pPage->nCell+pPage->nOverflow ); assert( MX_CELL(pPage->pBt)<=10921 ); assert( pPage->nCell<=MX_CELL(pPage->pBt) || CORRUPT_DB ); assert( pPage->nOverflow<=ArraySize(pPage->apOvfl) ); assert( ArraySize(pPage->apOvfl)==ArraySize(pPage->aiOvfl) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - /* The cell should normally be sized correctly. However, when moving a - ** malformed cell from a leaf page to an interior page, if the cell size - ** wanted to be less than 4 but got rounded up to 4 on the leaf, then size - ** might be less than 8 (leaf-size + pointer) on the interior node. Hence - ** the term after the || in the following assert(). */ - assert( sz==pPage->xCellSize(pPage, pCell) || (sz==8 && iChild>0) ); + assert( sz==pPage->xCellSize(pPage, pCell) || CORRUPT_DB ); + assert( pPage->nFree>=0 ); + assert( iChild>0 ); if( pPage->nOverflow || sz+2>pPage->nFree ){ if( pTemp ){ memcpy(pTemp, pCell, sz); pCell = pTemp; } - if( iChild ){ - put4byte(pCell, iChild); + put4byte(pCell, iChild); + j = pPage->nOverflow++; + /* Comparison against ArraySize-1 since we hold back one extra slot + ** as a contingency. In other words, never need more than 3 overflow + ** slots but 4 are allocated, just to be safe. */ + assert( j < ArraySize(pPage->apOvfl)-1 ); + pPage->apOvfl[j] = pCell; + pPage->aiOvfl[j] = (u16)i; + + /* When multiple overflows occur, they are always sequential and in + ** sorted order. This invariants arise because multiple overflows can + ** only occur when inserting divider cells into the parent page during + ** balancing, and the dividers are adjacent and sorted. + */ + assert( j==0 || pPage->aiOvfl[j-1]<(u16)i ); /* Overflows in sorted order */ + assert( j==0 || i==pPage->aiOvfl[j-1]+1 ); /* Overflows are sequential */ + }else{ + int rc = sqlite3PagerWrite(pPage->pDbPage); + if( NEVER(rc!=SQLITE_OK) ){ + return rc; } + assert( sqlite3PagerIswriteable(pPage->pDbPage) ); + data = pPage->aData; + assert( &data[pPage->cellOffset]==pPage->aCellIdx ); + rc = allocateSpace(pPage, sz, &idx); + if( rc ){ return rc; } + /* The allocateSpace() routine guarantees the following properties + ** if it returns successfully */ + assert( idx >= 0 ); + assert( idx >= pPage->cellOffset+2*pPage->nCell+2 || CORRUPT_DB ); + assert( idx+sz <= (int)pPage->pBt->usableSize ); + pPage->nFree -= (u16)(2 + sz); + /* In a corrupt database where an entry in the cell index section of + ** a btree page has a value of 3 or less, the pCell value might point + ** as many as 4 bytes in front of the start of the aData buffer for + ** the source page. Make sure this does not cause problems by not + ** reading the first 4 bytes */ + memcpy(&data[idx+4], pCell+4, sz-4); + put4byte(&data[idx], iChild); + pIns = pPage->aCellIdx + i*2; + memmove(pIns+2, pIns, 2*(pPage->nCell - i)); + put2byte(pIns, idx); + pPage->nCell++; + /* increment the cell count */ + if( (++data[pPage->hdrOffset+4])==0 ) data[pPage->hdrOffset+3]++; + assert( get2byte(&data[pPage->hdrOffset+3])==pPage->nCell || CORRUPT_DB ); +#ifndef SQLITE_OMIT_AUTOVACUUM + if( pPage->pBt->autoVacuum ){ + int rc2 = SQLITE_OK; + /* The cell may contain a pointer to an overflow page. If so, write + ** the entry for the overflow page into the pointer map. + */ + ptrmapPutOvflPtr(pPage, pPage, pCell, &rc2); + if( rc2 ) return rc2; + } +#endif + } + return SQLITE_OK; +} + +/* +** This variant of insertCell() assumes that the pTemp and iChild +** parameters are both zero. Use this variant in sqlite3BtreeInsert() +** for performance improvement, and also so that this variant is only +** called from that one place, and is thus inlined, and thus runs must +** faster. +** +** Fixes or enhancements to this routine should be reflected into +** the insertCell() routine. +*/ +static int insertCellFast( + MemPage *pPage, /* Page into which we are copying */ + int i, /* New cell becomes the i-th cell of the page */ + u8 *pCell, /* Content of the new cell */ + int sz /* Bytes of content in pCell */ +){ + int idx = 0; /* Where to write new cell content in data[] */ + int j; /* Loop counter */ + u8 *data; /* The content of the whole page */ + u8 *pIns; /* The point in pPage->aCellIdx[] where no cell inserted */ + + assert( i>=0 && i<=pPage->nCell+pPage->nOverflow ); + assert( MX_CELL(pPage->pBt)<=10921 ); + assert( pPage->nCell<=MX_CELL(pPage->pBt) || CORRUPT_DB ); + assert( pPage->nOverflow<=ArraySize(pPage->apOvfl) ); + assert( ArraySize(pPage->apOvfl)==ArraySize(pPage->aiOvfl) ); + assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + assert( sz==pPage->xCellSize(pPage, pCell) || CORRUPT_DB ); + assert( pPage->nFree>=0 ); + assert( pPage->nOverflow==0 ); + if( sz+2>pPage->nFree ){ j = pPage->nOverflow++; /* Comparison against ArraySize-1 since we hold back one extra slot ** as a contingency. In other words, never need more than 3 overflow @@ -68626,14 +76828,13 @@ static void insertCell( }else{ int rc = sqlite3PagerWrite(pPage->pDbPage); if( rc!=SQLITE_OK ){ - *pRC = rc; - return; + return rc; } assert( sqlite3PagerIswriteable(pPage->pDbPage) ); data = pPage->aData; assert( &data[pPage->cellOffset]==pPage->aCellIdx ); rc = allocateSpace(pPage, sz, &idx); - if( rc ){ *pRC = rc; return; } + if( rc ){ return rc; } /* The allocateSpace() routine guarantees the following properties ** if it returns successfully */ assert( idx >= 0 ); @@ -68641,30 +76842,109 @@ static void insertCell( assert( idx+sz <= (int)pPage->pBt->usableSize ); pPage->nFree -= (u16)(2 + sz); memcpy(&data[idx], pCell, sz); - if( iChild ){ - put4byte(&data[idx], iChild); - } pIns = pPage->aCellIdx + i*2; memmove(pIns+2, pIns, 2*(pPage->nCell - i)); put2byte(pIns, idx); pPage->nCell++; /* increment the cell count */ if( (++data[pPage->hdrOffset+4])==0 ) data[pPage->hdrOffset+3]++; - assert( get2byte(&data[pPage->hdrOffset+3])==pPage->nCell ); + assert( get2byte(&data[pPage->hdrOffset+3])==pPage->nCell || CORRUPT_DB ); #ifndef SQLITE_OMIT_AUTOVACUUM if( pPage->pBt->autoVacuum ){ + int rc2 = SQLITE_OK; /* The cell may contain a pointer to an overflow page. If so, write ** the entry for the overflow page into the pointer map. */ - ptrmapPutOvflPtr(pPage, pCell, pRC); + ptrmapPutOvflPtr(pPage, pPage, pCell, &rc2); + if( rc2 ) return rc2; } #endif } + return SQLITE_OK; } +/* +** The following parameters determine how many adjacent pages get involved +** in a balancing operation. NN is the number of neighbors on either side +** of the page that participate in the balancing operation. NB is the +** total number of pages that participate, including the target page and +** NN neighbors on either side. +** +** The minimum value of NN is 1 (of course). Increasing NN above 1 +** (to 2 or 3) gives a modest improvement in SELECT and DELETE performance +** in exchange for a larger degradation in INSERT and UPDATE performance. +** The value of NN appears to give the best results overall. +** +** (Later:) The description above makes it seem as if these values are +** tunable - as if you could change them and recompile and it would all work. +** But that is unlikely. NB has been 3 since the inception of SQLite and +** we have never tested any other value. +*/ +#define NN 1 /* Number of neighbors on either side of pPage */ +#define NB 3 /* (NN*2+1): Total pages involved in the balance */ + /* ** A CellArray object contains a cache of pointers and sizes for a ** consecutive sequence of cells that might be held on multiple pages. +** +** The cells in this array are the divider cell or cells from the pParent +** page plus up to three child pages. There are a total of nCell cells. +** +** pRef is a pointer to one of the pages that contributes cells. This is +** used to access information such as MemPage.intKey and MemPage.pBt->pageSize +** which should be common to all pages that contribute cells to this array. +** +** apCell[] and szCell[] hold, respectively, pointers to the start of each +** cell and the size of each cell. Some of the apCell[] pointers might refer +** to overflow cells. In other words, some apCel[] pointers might not point +** to content area of the pages. +** +** A szCell[] of zero means the size of that cell has not yet been computed. +** +** The cells come from as many as four different pages: +** +** ----------- +** | Parent | +** ----------- +** / | \ +** / | \ +** --------- --------- --------- +** |Child-1| |Child-2| |Child-3| +** --------- --------- --------- +** +** The order of cells is in the array is for an index btree is: +** +** 1. All cells from Child-1 in order +** 2. The first divider cell from Parent +** 3. All cells from Child-2 in order +** 4. The second divider cell from Parent +** 5. All cells from Child-3 in order +** +** For a table-btree (with rowids) the items 2 and 4 are empty because +** content exists only in leaves and there are no divider cells. +** +** For an index btree, the apEnd[] array holds pointer to the end of page +** for Child-1, the Parent, Child-2, the Parent (again), and Child-3, +** respectively. The ixNx[] array holds the number of cells contained in +** each of these 5 stages, and all stages to the left. Hence: +** +** ixNx[0] = Number of cells in Child-1. +** ixNx[1] = Number of cells in Child-1 plus 1 for first divider. +** ixNx[2] = Number of cells in Child-1 and Child-2 + 1 for 1st divider. +** ixNx[3] = Number of cells in Child-1 and Child-2 + both divider cells +** ixNx[4] = Total number of cells. +** +** For a table-btree, the concept is similar, except only apEnd[0]..apEnd[2] +** are used and they point to the leaf pages only, and the ixNx value are: +** +** ixNx[0] = Number of cells in Child-1. +** ixNx[1] = Number of cells in Child-1 and Child-2. +** ixNx[2] = Total number of cells. +** +** Sometimes when deleting, a child page can have zero cells. In those +** cases, ixNx[] entries with higher indexes, and the corresponding apEnd[] +** entries, shift down. The end result is that each ixNx[] entry should +** be larger than the previous */ typedef struct CellArray CellArray; struct CellArray { @@ -68672,6 +76952,8 @@ struct CellArray { MemPage *pRef; /* Reference page */ u8 **apCell; /* All cells begin balanced */ u16 *szCell; /* Local size of all cells in apCell[] */ + u8 *apEnd[NB*2]; /* MemPage.aDataEnd values */ + int ixNx[NB*2]; /* Index of at which we move to the next apEnd[] */ }; /* @@ -68679,14 +76961,16 @@ struct CellArray { ** computed. */ static void populateCellCache(CellArray *p, int idx, int N){ + MemPage *pRef = p->pRef; + u16 *szCell = p->szCell; assert( idx>=0 && idx+N<=p->nCell ); while( N>0 ){ assert( p->apCell[idx]!=0 ); - if( p->szCell[idx]==0 ){ - p->szCell[idx] = p->pRef->xCellSize(p->pRef, p->apCell[idx]); + if( szCell[idx]==0 ){ + szCell[idx] = pRef->xCellSize(pRef, p->apCell[idx]); }else{ assert( CORRUPT_DB || - p->szCell[idx]==p->pRef->xCellSize(p->pRef, p->apCell[idx]) ); + szCell[idx]==pRef->xCellSize(pRef, p->apCell[idx]) ); } idx++; N--; @@ -68709,49 +76993,71 @@ static u16 cachedCellSize(CellArray *p, int N){ } /* -** Array apCell[] contains pointers to nCell b-tree page cells. The +** Array apCell[] contains pointers to nCell b-tree page cells. The ** szCell[] array contains the size in bytes of each cell. This function ** replaces the current contents of page pPg with the contents of the cell ** array. ** ** Some of the cells in apCell[] may currently be stored in pPg. This -** function works around problems caused by this by making a copy of any +** function works around problems caused by this by making a copy of any ** such cells before overwriting the page data. ** -** The MemPage.nFree field is invalidated by this function. It is the +** The MemPage.nFree field is invalidated by this function. It is the ** responsibility of the caller to set it correctly. */ static int rebuildPage( - MemPage *pPg, /* Edit this page */ + CellArray *pCArray, /* Content to be added to page pPg */ + int iFirst, /* First cell in pCArray to use */ int nCell, /* Final number of cells on page */ - u8 **apCell, /* Array of cells */ - u16 *szCell /* Array of cell sizes */ + MemPage *pPg /* The page to be reconstructed */ ){ const int hdr = pPg->hdrOffset; /* Offset of header on pPg */ u8 * const aData = pPg->aData; /* Pointer to data for pPg */ const int usableSize = pPg->pBt->usableSize; u8 * const pEnd = &aData[usableSize]; - int i; + int i = iFirst; /* Which cell to copy from pCArray*/ + u32 j; /* Start of cell content area */ + int iEnd = i+nCell; /* Loop terminator */ u8 *pCellptr = pPg->aCellIdx; u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager); u8 *pData; + int k; /* Current slot in pCArray->apEnd[] */ + u8 *pSrcEnd; /* Current pCArray->apEnd[k] value */ - i = get2byte(&aData[hdr+5]); - memcpy(&pTmp[i], &aData[i], usableSize - i); + assert( i(u32)usableSize) ){ j = 0; } + memcpy(&pTmp[j], &aData[j], usableSize - j); + + for(k=0; ALWAYS(kixNx[k]<=i; k++){} + pSrcEnd = pCArray->apEnd[k]; pData = pEnd; - for(i=0; iapCell[i]; + u16 sz = pCArray->szCell[i]; + assert( sz>0 ); + if( SQLITE_WITHIN(pCell,aData+j,pEnd) ){ + if( ((uptr)(pCell+sz))>(uptr)pEnd ) return SQLITE_CORRUPT_BKPT; pCell = &pTmp[pCell - aData]; + }else if( (uptr)(pCell+sz)>(uptr)pSrcEnd + && (uptr)(pCell)<(uptr)pSrcEnd + ){ + return SQLITE_CORRUPT_BKPT; } - pData -= szCell[i]; + + pData -= sz; put2byte(pCellptr, (pData - aData)); pCellptr += 2; if( pData < pCellptr ) return SQLITE_CORRUPT_BKPT; - memcpy(pData, pCell, szCell[i]); - assert( szCell[i]==pPg->xCellSize(pPg, pCell) || CORRUPT_DB ); - testcase( szCell[i]!=pPg->xCellSize(pPg,pCell) ); + memmove(pData, pCell, sz); + assert( sz==pPg->xCellSize(pPg, pCell) || CORRUPT_DB ); + i++; + if( i>=iEnd ) break; + if( pCArray->ixNx[k]<=i ){ + k++; + pSrcEnd = pCArray->apEnd[k]; + } } /* The pPg->nFree field is now set incorrectly. The caller will fix it. */ @@ -68766,12 +77072,11 @@ static int rebuildPage( } /* -** Array apCell[] contains nCell pointers to b-tree cells. Array szCell -** contains the size in bytes of each such cell. This function attempts to -** add the cells stored in the array to page pPg. If it cannot (because -** the page needs to be defragmented before the cells will fit), non-zero -** is returned. Otherwise, if the cells are added successfully, zero is -** returned. +** The pCArray objects contains pointers to b-tree cells and the cell sizes. +** This function attempts to add the cells stored in the array to page pPg. +** If it cannot (because the page needs to be defragmented before the cells +** will fit), non-zero is returned. Otherwise, if the cells are added +** successfully, zero is returned. ** ** Argument pCellptr points to the first entry in the cell-pointer array ** (part of page pPg) to populate. After cell apCell[0] is written to the @@ -68779,7 +77084,7 @@ static int rebuildPage( ** cell in the array. It is the responsibility of the caller to ensure ** that it is safe to overwrite this part of the cell-pointer array. ** -** When this function is called, *ppData points to the start of the +** When this function is called, *ppData points to the start of the ** content area on page pPg. If the size of the content area is extended, ** *ppData is updated to point to the new start of the content area ** before returning. @@ -68787,27 +77092,33 @@ static int rebuildPage( ** Finally, argument pBegin points to the byte immediately following the ** end of the space required by this page for the cell-pointer area (for ** all cells - not just those inserted by the current call). If the content -** area must be extended to before this point in order to accomodate all +** area must be extended to before this point in order to accommodate all ** cells in apCell[], then the cells do not fit and non-zero is returned. */ static int pageInsertArray( MemPage *pPg, /* Page to add cells to */ u8 *pBegin, /* End of cell-pointer array */ - u8 **ppData, /* IN/OUT: Page content -area pointer */ + u8 **ppData, /* IN/OUT: Page content-area pointer */ u8 *pCellptr, /* Pointer to cell-pointer area */ int iFirst, /* Index of first cell to add */ int nCell, /* Number of cells to add to pPg */ CellArray *pCArray /* Array of cells */ ){ - int i; - u8 *aData = pPg->aData; - u8 *pData = *ppData; - int iEnd = iFirst + nCell; + int i = iFirst; /* Loop counter - cell index to insert */ + u8 *aData = pPg->aData; /* Complete page */ + u8 *pData = *ppData; /* Content area. A subset of aData[] */ + int iEnd = iFirst + nCell; /* End of loop. One past last cell to ins */ + int k; /* Current slot in pCArray->apEnd[] */ + u8 *pEnd; /* Maximum extent of cell data */ assert( CORRUPT_DB || pPg->hdrOffset==0 ); /* Never called on page 1 */ - for(i=iFirst; iixNx[k]<=i ; k++){} + pEnd = pCArray->apEnd[k]; + while( 1 /*Exit by break*/ ){ int sz, rc; u8 *pSlot; - sz = cachedCellSize(pCArray, i); + assert( pCArray->szCell[i]!=0 ); + sz = pCArray->szCell[i]; if( (aData[1]==0 && aData[2]==0) || (pSlot = pageFindSlot(pPg,sz,&rc))==0 ){ if( (pData - pBegin)apCell[i] || pSlot>=(pCArray->apCell[i]+sz) || CORRUPT_DB ); + if( (uptr)(pCArray->apCell[i]+sz)>(uptr)pEnd + && (uptr)(pCArray->apCell[i])<(uptr)pEnd + ){ + assert( CORRUPT_DB ); + (void)SQLITE_CORRUPT_BKPT; + return 1; + } memmove(pSlot, pCArray->apCell[i], sz); put2byte(pCellptr, (pSlot - aData)); pCellptr += 2; + i++; + if( i>=iEnd ) break; + if( pCArray->ixNx[k]<=i ){ + k++; + pEnd = pCArray->apEnd[k]; + } } *ppData = pData; return 0; } /* -** Array apCell[] contains nCell pointers to b-tree cells. Array szCell -** contains the size in bytes of each such cell. This function adds the -** space associated with each cell in the array that is currently stored -** within the body of pPg to the pPg free-list. The cell-pointers and other -** fields of the page are not updated. +** The pCArray object contains pointers to b-tree cells and their sizes. +** +** This function adds the space associated with each cell in the array +** that is currently stored within the body of pPg to the pPg free-list. +** The cell-pointers and other fields of the page are not updated. ** ** This function returns the total number of cells added to the free-list. */ @@ -68846,45 +77170,58 @@ static int pageFreeArray( u8 * const pEnd = &aData[pPg->pBt->usableSize]; u8 * const pStart = &aData[pPg->hdrOffset + 8 + pPg->childPtrSize]; int nRet = 0; - int i; + int i, j; int iEnd = iFirst + nCell; - u8 *pFree = 0; - int szFree = 0; + int nFree = 0; + int aOfst[10]; + int aAfter[10]; for(i=iFirst; iapCell[i]; if( SQLITE_WITHIN(pCell, pStart, pEnd) ){ int sz; + int iAfter; + int iOfst; /* No need to use cachedCellSize() here. The sizes of all cells that ** are to be freed have already been computing while deciding which ** cells need freeing */ sz = pCArray->szCell[i]; assert( sz>0 ); - if( pFree!=(pCell + sz) ){ - if( pFree ){ - assert( pFree>aData && (pFree - aData)<65536 ); - freeSpace(pPg, (u16)(pFree - aData), szFree); + iOfst = (u16)(pCell - aData); + iAfter = iOfst+sz; + for(j=0; jpEnd ) return 0; - }else{ - pFree = pCell; - szFree += sz; + } + if( j>=nFree ){ + if( nFree>=(int)(sizeof(aOfst)/sizeof(aOfst[0])) ){ + for(j=0; jpEnd ) return 0; + nFree++; } nRet++; } } - if( pFree ){ - assert( pFree>aData && (pFree - aData)<65536 ); - freeSpace(pPg, (u16)(pFree - aData), szFree); + for(j=0; jnCell cells starting -** with apCell[iOld]. After balancing, this page should hold nNew cells +** pCArray contains pointers to and sizes of all cells in the page being +** balanced. The current page, pPg, has pPg->nCell cells starting with +** pCArray->apCell[iOld]. After balancing, this page should hold nNew cells ** starting at apCell[iNew]. ** ** This routine makes the necessary adjustments to pPg so that it contains @@ -68916,22 +77253,28 @@ static int editPage( #endif /* Remove cells from the start and end of the page */ + assert( nCell>=0 ); if( iOldnCell) ) return SQLITE_CORRUPT_BKPT; memmove(pPg->aCellIdx, &pPg->aCellIdx[nShift*2], nCell*2); nCell -= nShift; } if( iNewEnd < iOldEnd ){ - nCell -= pageFreeArray(pPg, iNewEnd, iOldEnd - iNewEnd, pCArray); + int nTail = pageFreeArray(pPg, iNewEnd, iOldEnd - iNewEnd, pCArray); + assert( nCell>=nTail ); + nCell -= nTail; } - pData = &aData[get2byteNotZero(&aData[hdr+5])]; + pData = &aData[get2byte(&aData[hdr+5])]; if( pDatapPg->aDataEnd) ) goto editpage_fail; /* Add cells to the start of the page */ if( iNew=0 ); pCellptr = pPg->aCellIdx; memmove(&pCellptr[nAdd*2], pCellptr, nCell*2); if( pageInsertArray( @@ -68946,8 +77289,11 @@ static int editPage( int iCell = (iOld + pPg->aiOvfl[i]) - iNew; if( iCell>=0 && iCellaCellIdx[iCell * 2]; - memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2); + if( nCell>iCell ){ + memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2); + } nCell++; + cachedCellSize(pCArray, iCell+iNew); if( pageInsertArray( pPg, pBegin, &pData, pCellptr, iCell+iNew, 1, pCArray @@ -68956,6 +77302,7 @@ static int editPage( } /* Append cells to the end of the page */ + assert( nCell>=0 ); pCellptr = &pPg->aCellIdx[nCell*2]; if( pageInsertArray( pPg, pBegin, &pData, pCellptr, @@ -68984,24 +77331,9 @@ static int editPage( editpage_fail: /* Unable to edit this page. Rebuild it from scratch instead. */ populateCellCache(pCArray, iNew, nNew); - return rebuildPage(pPg, nNew, &pCArray->apCell[iNew], &pCArray->szCell[iNew]); + return rebuildPage(pCArray, iNew, nNew, pPg); } -/* -** The following parameters determine how many adjacent pages get involved -** in a balancing operation. NN is the number of neighbors on either side -** of the page that participate in the balancing operation. NB is the -** total number of pages that participate, including the target page and -** NN neighbors on either side. -** -** The minimum value of NN is 1 (of course). Increasing NN above 1 -** (to 2 or 3) gives a modest improvement in SELECT and DELETE performance -** in exchange for a larger degradation in INSERT and UPDATE performance. -** The value of NN appears to give the best results overall. -*/ -#define NN 1 /* Number of neighbors on either side of pPage */ -#define NB (NN*2+1) /* Total pages involved in the balance */ - #ifndef SQLITE_OMIT_QUICKBALANCE /* @@ -69037,10 +77369,11 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ assert( sqlite3PagerIswriteable(pParent->pDbPage) ); assert( pPage->nOverflow==1 ); - /* This error condition is now caught prior to reaching this function */ - if( NEVER(pPage->nCell==0) ) return SQLITE_CORRUPT_BKPT; + if( pPage->nCell==0 ) return SQLITE_CORRUPT_BKPT; /* dbfuzz001.test */ + assert( pPage->nFree>=0 ); + assert( pParent->nFree>=0 ); - /* Allocate a new page. This page will become the right-sibling of + /* Allocate a new page. This page will become the right-sibling of ** pPage. Make the parent page writable, so that the new divider cell ** may be inserted. If both these operations are successful, proceed. */ @@ -69052,37 +77385,47 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ u8 *pCell = pPage->apOvfl[0]; u16 szCell = pPage->xCellSize(pPage, pCell); u8 *pStop; + CellArray b; assert( sqlite3PagerIswriteable(pNew->pDbPage) ); - assert( pPage->aData[0]==(PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF) ); + assert( CORRUPT_DB || pPage->aData[0]==(PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF) ); zeroPage(pNew, PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF); - rc = rebuildPage(pNew, 1, &pCell, &szCell); - if( NEVER(rc) ) return rc; + b.nCell = 1; + b.pRef = pPage; + b.apCell = &pCell; + b.szCell = &szCell; + b.apEnd[0] = pPage->aDataEnd; + b.ixNx[0] = 2; + rc = rebuildPage(&b, 0, 1, pNew); + if( NEVER(rc) ){ + releasePage(pNew); + return rc; + } pNew->nFree = pBt->usableSize - pNew->cellOffset - 2 - szCell; /* If this is an auto-vacuum database, update the pointer map - ** with entries for the new page, and any pointer from the + ** with entries for the new page, and any pointer from the ** cell on the page to an overflow page. If either of these ** operations fails, the return code is set, but the contents - ** of the parent page are still manipulated by thh code below. + ** of the parent page are still manipulated by the code below. ** That is Ok, at this point the parent page is guaranteed to ** be marked as dirty. Returning an error code will cause a ** rollback, undoing any changes made to the parent page. */ - if( ISAUTOVACUUM ){ + if( ISAUTOVACUUM(pBt) ){ ptrmapPut(pBt, pgnoNew, PTRMAP_BTREE, pParent->pgno, &rc); if( szCell>pNew->minLocal ){ - ptrmapPutOvflPtr(pNew, pCell, &rc); + ptrmapPutOvflPtr(pNew, pNew, pCell, &rc); } } - + /* Create a divider cell to insert into pParent. The divider cell ** consists of a 4-byte page number (the page number of pPage) and ** a variable length key value (which must be the same value as the ** largest key on pPage). ** - ** To find the largest key value on pPage, first find the right-most - ** cell on pPage. The first two fields of this cell are the + ** To find the largest key value on pPage, first find the right-most + ** cell on pPage. The first two fields of this cell are the ** record-length (a variable length integer at most 32-bits in size) ** and the key value (a variable length integer, may have any value). ** The first of the while(...) loops below skips over the record-length @@ -69097,13 +77440,13 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ /* Insert the new divider cell into pParent. */ if( rc==SQLITE_OK ){ - insertCell(pParent, pParent->nCell, pSpace, (int)(pOut-pSpace), - 0, pPage->pgno, &rc); + rc = insertCell(pParent, pParent->nCell, pSpace, (int)(pOut-pSpace), + 0, pPage->pgno); } /* Set the right-child pointer of pParent to point to the new page. */ put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew); - + /* Release the reference to the new page. */ releasePage(pNew); } @@ -69115,7 +77458,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ #if 0 /* ** This function does not contribute anything to the operation of SQLite. -** it is sometimes activated temporarily while debugging code responsible +** it is sometimes activated temporarily while debugging code responsible ** for setting pointer-map entries. */ static int ptrmapCheckPages(MemPage **apPage, int nPage){ @@ -69130,7 +77473,7 @@ static int ptrmapCheckPages(MemPage **apPage, int nPage){ for(j=0; jnCell; j++){ CellInfo info; u8 *z; - + z = findCell(pPage, j); pPage->xParseCell(pPage, z, &info); if( info.nLocalpgno==1) ? 100 : 0); int rc; int iData; - - + + assert( pFrom->isInit ); assert( pFrom->nFree>=iToHdr ); assert( get2byte(&aFrom[iFromHdr+5]) <= (int)pBt->usableSize ); - + /* Copy the b-tree node content from page pFrom to page pTo. */ iData = get2byte(&aFrom[iFromHdr+5]); memcpy(&aTo[iData], &aFrom[iData], pBt->usableSize-iData); memcpy(&aTo[iToHdr], &aFrom[iFromHdr], pFrom->cellOffset + 2*pFrom->nCell); - + /* Reinitialize page pTo so that the contents of the MemPage structure ** match the new data. The initialization of pTo can actually fail under - ** fairly obscure circumstances, even though it is a copy of initialized + ** fairly obscure circumstances, even though it is a copy of initialized ** page pFrom. */ pTo->isInit = 0; rc = btreeInitPage(pTo); + if( rc==SQLITE_OK ) rc = btreeComputeFreeSpace(pTo); if( rc!=SQLITE_OK ){ *pRC = rc; return; } - + /* If this is an auto-vacuum database, update the pointer-map entries ** for any b-tree or overflow pages that pTo now contains the pointers to. */ - if( ISAUTOVACUUM ){ + if( ISAUTOVACUUM(pBt) ){ *pRC = setChildPtrmaps(pTo); } } @@ -69217,13 +77561,13 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){ ** (hereafter "the page") and up to 2 siblings so that all pages have about the ** same amount of free space. Usually a single sibling on either side of the ** page are used in the balancing, though both siblings might come from one -** side if the page is the first or last child of its parent. If the page +** side if the page is the first or last child of its parent. If the page ** has fewer than 2 siblings (something which can only happen if the page ** is a root page or a child of a root page) then all available siblings ** participate in the balancing. ** -** The number of siblings of the page might be increased or decreased by -** one or two in an effort to keep pages nearly full but not over full. +** The number of siblings of the page might be increased or decreased by +** one or two in an effort to keep pages nearly full but not over full. ** ** Note that when this routine is called, some of the cells on the page ** might not actually be stored in MemPage.aData[]. This can happen @@ -69234,7 +77578,7 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){ ** inserted into or removed from the parent page (pParent). Doing so ** may cause the parent page to become overfull or underfull. If this ** happens, it is the responsibility of the caller to invoke the correct -** balancing routine to fix this problem (see the balance() routine). +** balancing routine to fix this problem (see the balance() routine). ** ** If this routine fails for any reason, it might leave the database ** in a corrupted state. So if this routine fails, the database should @@ -69249,7 +77593,7 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){ ** of the page-size, the aOvflSpace[] buffer is guaranteed to be large ** enough for all overflow cells. ** -** If aOvflSpace is set to a null pointer, this function returns +** If aOvflSpace is set to a null pointer, this function returns ** SQLITE_NOMEM. */ static int balance_nonroot( @@ -69284,23 +77628,16 @@ static int balance_nonroot( Pgno pgno; /* Temp var to store a page number in */ u8 abDone[NB+2]; /* True after i'th new page is populated */ Pgno aPgno[NB+2]; /* Page numbers of new pages before shuffling */ - Pgno aPgOrder[NB+2]; /* Copy of aPgno[] used for sorting pages */ - u16 aPgFlags[NB+2]; /* flags field of new pages before shuffling */ - CellArray b; /* Parsed information on cells being balanced */ + CellArray b; /* Parsed information on cells being balanced */ memset(abDone, 0, sizeof(abDone)); - b.nCell = 0; - b.apCell = 0; + memset(&b, 0, sizeof(b)); pBt = pParent->pBt; assert( sqlite3_mutex_held(pBt->mutex) ); assert( sqlite3PagerIswriteable(pParent->pDbPage) ); -#if 0 - TRACE(("BALANCE: begin page %d child of %d\n", pPage->pgno, pParent->pgno)); -#endif - /* At this point pParent may have at most one overflow cell. And if - ** this overflow cell is present, it must be the cell with + ** this overflow cell is present, it must be the cell with ** index iParentIdx. This scenario comes about when this function ** is called (indirectly) from sqlite3BtreeDelete(). */ @@ -69310,12 +77647,13 @@ static int balance_nonroot( if( !aOvflSpace ){ return SQLITE_NOMEM_BKPT; } + assert( pParent->nFree>=0 ); - /* Find the sibling pages to balance. Also locate the cells in pParent - ** that divide the siblings. An attempt is made to find NN siblings on - ** either side of pPage. More siblings are taken from one side, however, + /* Find the sibling pages to balance. Also locate the cells in pParent + ** that divide the siblings. An attempt is made to find NN siblings on + ** either side of pPage. More siblings are taken from one side, however, ** if there are fewer than NN siblings on the other side. If pParent - ** has NB or fewer children then all children of pParent are taken. + ** has NB or fewer children then all children of pParent are taken. ** ** This loop also drops the divider cells from the parent page. This ** way, the remainder of the function does not have to deal with any @@ -69327,7 +77665,7 @@ static int balance_nonroot( nxDiv = 0; }else{ assert( bBulk==0 || bBulk==1 ); - if( iParentIdx==0 ){ + if( iParentIdx==0 ){ nxDiv = 0; }else if( iParentIdx==i ){ nxDiv = i-2+bBulk; @@ -69344,12 +77682,21 @@ static int balance_nonroot( } pgno = get4byte(pRight); while( 1 ){ - rc = getAndInitPage(pBt, pgno, &apOld[i], 0, 0); + if( rc==SQLITE_OK ){ + rc = getAndInitPage(pBt, pgno, &apOld[i], 0); + } if( rc ){ memset(apOld, 0, (i+1)*sizeof(MemPage*)); goto balance_cleanup; } - nMaxCells += 1+apOld[i]->nCell+apOld[i]->nOverflow; + if( apOld[i]->nFree<0 ){ + rc = btreeComputeFreeSpace(apOld[i]); + if( rc ){ + memset(apOld, 0, (i)*sizeof(MemPage*)); + goto balance_cleanup; + } + } + nMaxCells += apOld[i]->nCell + ArraySize(pParent->apOvfl); if( (i--)==0 ) break; if( pParent->nOverflow && i+nxDiv==pParent->aiOvfl[0] ){ @@ -69367,7 +77714,7 @@ static int balance_nonroot( ** This is safe because dropping a cell only overwrites the first ** four bytes of it, and this function does not need the first ** four bytes of the divider cell. So the pointer is safe to use - ** later on. + ** later on. ** ** But not if we are in secure-delete mode. In secure-delete mode, ** the dropCell() routine will overwrite the entire cell with zeroes. @@ -69377,12 +77724,10 @@ static int balance_nonroot( if( pBt->btsFlags & BTS_FAST_SECURE ){ int iOff; + /* If the following if() condition is not true, the db is corrupted. + ** The call to dropCell() below will detect this. */ iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData); - if( (iOff+szNew[i])>(int)pBt->usableSize ){ - rc = SQLITE_CORRUPT_BKPT; - memset(apOld, 0, (i+1)*sizeof(MemPage*)); - goto balance_cleanup; - }else{ + if( (iOff+szNew[i])<=(int)pBt->usableSize ){ memcpy(&aOvflSpace[iOff], apDiv[i], szNew[i]); apDiv[i] = &aOvflSpace[apDiv[i]-pParent->aData]; } @@ -69403,7 +77748,7 @@ static int balance_nonroot( + nMaxCells*sizeof(u16) /* b.szCell */ + pBt->pageSize; /* aSpace1 */ - assert( szScratch<=6*(int)pBt->pageSize ); + assert( szScratch<=7*(int)pBt->pageSize ); b.apCell = sqlite3StackAllocRaw(0, szScratch ); if( b.apCell==0 ){ rc = SQLITE_NOMEM_BKPT; @@ -69439,6 +77784,7 @@ static int balance_nonroot( u16 maskPage = pOld->maskPage; u8 *piCell = aData + pOld->cellOffset; u8 *piEnd; + VVA_ONLY( int nCellAtStart = b.nCell; ) /* Verify that all sibling pages are of the same "type" (table-leaf, ** table-interior, index-leaf, or index-interior). @@ -69467,6 +77813,10 @@ static int balance_nonroot( */ memset(&b.szCell[b.nCell], 0, sizeof(b.szCell[0])*(limit+pOld->nOverflow)); if( pOld->nOverflow>0 ){ + if( NEVER(limitaiOvfl[0]) ){ + rc = SQLITE_CORRUPT_BKPT; + goto balance_cleanup; + } limit = pOld->aiOvfl[0]; for(j=0; jnCell+pOld->nOverflow) ); cntOld[i] = b.nCell; if( ileaf ){ assert( leafCorrection==0 ); - assert( pOld->hdrOffset==0 ); + assert( pOld->hdrOffset==0 || CORRUPT_DB ); /* The right pointer of the child page pOld becomes the left ** pointer of the divider cell */ memcpy(b.apCell[b.nCell], &pOld->aData[8], 4); @@ -69526,7 +77877,7 @@ static int balance_nonroot( ** Figure out the number of pages needed to hold all b.nCell cells. ** Store this number in "k". Also compute szNew[] which is the total ** size of all cells on the i-th page and cntNew[] which is the index - ** in b.apCell[] of the cell that divides page i from page i+1. + ** in b.apCell[] of the cell that divides page i from page i+1. ** cntNew[k] should equal b.nCell. ** ** Values computed by this block: @@ -69536,11 +77887,22 @@ static int balance_nonroot( ** cntNew[i]: Index in b.apCell[] and b.szCell[] for the first cell to ** the right of the i-th sibling page. ** usableSpace: Number of bytes of space available on each sibling. - ** + ** */ usableSpace = pBt->usableSize - 12 + leafCorrection; - for(i=0; iaDataEnd; + b.ixNx[k] = cntOld[i]; + if( k && b.ixNx[k]==b.ixNx[k-1] ){ + k--; /* Omit b.ixNx[] entry for child pages with no cells */ + } + if( !leafData ){ + k++; + b.apEnd[k] = pParent->aDataEnd; + b.ixNx[k] = cntOld[i]+1; + } + assert( p->nFree>=0 ); szNew[i] = usableSpace - p->nFree; for(j=0; jnOverflow; j++){ szNew[i] += 2 + p->xCellSize(p, p->apOvfl[j]); @@ -69612,15 +77974,17 @@ static int balance_nonroot( d = r + 1 - leafData; (void)cachedCellSize(&b, d); do{ + int szR, szD; assert( d szLeft-(b.szCell[r]+(i==k-1?0:2)))){ + && (bBulk || szRight+szD+2 > szLeft-(szR+(i==k-1?0:2)))){ break; } - szRight += b.szCell[d] + 2; - szLeft -= b.szCell[r] + 2; + szRight += szD + 2; + szLeft -= szR + 2; cntNew[i-1] = r; r--; d--; @@ -69633,7 +77997,7 @@ static int balance_nonroot( } } - /* Sanity check: For a non-corrupt database file one of the follwing + /* Sanity check: For a non-corrupt database file one of the following ** must be true: ** (1) We found one or more cells (cntNew[0])>0), or ** (2) pPage is a virtual root page. A virtual root page is when @@ -69641,7 +78005,7 @@ static int balance_nonroot( ** that page. */ assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) || CORRUPT_DB); - TRACE(("BALANCE: old: %d(nc=%d) %d(nc=%d) %d(nc=%d)\n", + TRACE(("BALANCE: old: %u(nc=%u) %u(nc=%u) %u(nc=%u)\n", apOld[0]->pgno, apOld[0]->nCell, nOld>=2 ? apOld[1]->pgno : 0, nOld>=2 ? apOld[1]->nCell : 0, nOld>=3 ? apOld[2]->pgno : 0, nOld>=3 ? apOld[2]->nCell : 0 @@ -69658,6 +78022,11 @@ static int balance_nonroot( apOld[i] = 0; rc = sqlite3PagerWrite(pNew->pDbPage); nNew++; + if( sqlite3PagerPageRefcount(pNew->pDbPage)!=1+(i==(iParentIdx-nxDiv)) + && rc==SQLITE_OK + ){ + rc = SQLITE_CORRUPT_BKPT; + } if( rc ) goto balance_cleanup; }else{ assert( i>0 ); @@ -69669,7 +78038,7 @@ static int balance_nonroot( cntOld[i] = b.nCell; /* Set the pointer-map entry for the new sibling page. */ - if( ISAUTOVACUUM ){ + if( ISAUTOVACUUM(pBt) ){ ptrmapPut(pBt, pNew->pgno, PTRMAP_BTREE, pParent->pgno, &rc); if( rc!=SQLITE_OK ){ goto balance_cleanup; @@ -69679,52 +78048,49 @@ static int balance_nonroot( } /* - ** Reassign page numbers so that the new pages are in ascending order. + ** Reassign page numbers so that the new pages are in ascending order. ** This helps to keep entries in the disk file in order so that a scan - ** of the table is closer to a linear scan through the file. That in turn + ** of the table is closer to a linear scan through the file. That in turn ** helps the operating system to deliver pages from the disk more rapidly. ** - ** An O(n^2) insertion sort algorithm is used, but since n is never more - ** than (NB+2) (a small constant), that should not be a problem. + ** An O(N*N) sort algorithm is used, but since N is never more than NB+2 + ** (5), that is not a performance concern. ** - ** When NB==3, this one optimization makes the database about 25% faster + ** When NB==3, this one optimization makes the database about 25% faster ** for large insertions and deletions. */ for(i=0; ipgno; - aPgFlags[i] = apNew[i]->pDbPage->flags; - for(j=0; jpgno; + assert( apNew[i]->pDbPage->flags & PGHDR_WRITEABLE ); + assert( apNew[i]->pDbPage->flags & PGHDR_DIRTY ); } - for(i=0; ipgno < apNew[iB]->pgno ) iB = j; } - pgno = aPgOrder[iBest]; - aPgOrder[iBest] = 0xffffffff; - if( iBest!=i ){ - if( iBest>i ){ - sqlite3PagerRekey(apNew[iBest]->pDbPage, pBt->nPage+iBest+1, 0); - } - sqlite3PagerRekey(apNew[i]->pDbPage, pgno, aPgFlags[iBest]); - apNew[i]->pgno = pgno; + + /* If apNew[i] has a page number that is bigger than any of the + ** subsequence apNew[i] entries, then swap apNew[i] with the subsequent + ** entry that has the smallest page number (which we know to be + ** entry apNew[iB]). + */ + if( iB!=i ){ + Pgno pgnoA = apNew[i]->pgno; + Pgno pgnoB = apNew[iB]->pgno; + Pgno pgnoTemp = (PENDING_BYTE/pBt->pageSize)+1; + u16 fgA = apNew[i]->pDbPage->flags; + u16 fgB = apNew[iB]->pDbPage->flags; + sqlite3PagerRekey(apNew[i]->pDbPage, pgnoTemp, fgB); + sqlite3PagerRekey(apNew[iB]->pDbPage, pgnoA, fgA); + sqlite3PagerRekey(apNew[i]->pDbPage, pgnoB, fgB); + apNew[i]->pgno = pgnoB; + apNew[iB]->pgno = pgnoA; } } - TRACE(("BALANCE: new: %d(%d nc=%d) %d(%d nc=%d) %d(%d nc=%d) " - "%d(%d nc=%d) %d(%d nc=%d)\n", + TRACE(("BALANCE: new: %u(%u nc=%u) %u(%u nc=%u) %u(%u nc=%u) " + "%u(%u nc=%u) %u(%u nc=%u)\n", apNew[0]->pgno, szNew[0], cntNew[0], nNew>=2 ? apNew[1]->pgno : 0, nNew>=2 ? szNew[1] : 0, nNew>=2 ? cntNew[1] - cntNew[0] - !leafData : 0, @@ -69737,17 +78103,19 @@ static int balance_nonroot( )); assert( sqlite3PagerIswriteable(pParent->pDbPage) ); + assert( nNew>=1 && nNew<=ArraySize(apNew) ); + assert( apNew[nNew-1]!=0 ); put4byte(pRight, apNew[nNew-1]->pgno); /* If the sibling pages are not leaves, ensure that the right-child pointer - ** of the right-most new sibling page is set to the value that was + ** of the right-most new sibling page is set to the value that was ** originally in the same field of the right-most old sibling page. */ if( (pageFlags & PTF_LEAF)==0 && nOld!=nNew ){ MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1]; memcpy(&apNew[nNew-1]->aData[8], &pOld->aData[8], 4); } - /* Make any required updates to pointer map entries associated with + /* Make any required updates to pointer map entries associated with ** cells stored on sibling pages following the balance operation. Pointer ** map entries associated with divider cells are set by the insertCell() ** routine. The associated pointer map entries are: @@ -69758,25 +78126,26 @@ static int balance_nonroot( ** b) if the sibling pages are not leaves, the child page associated ** with the cell. ** - ** If the sibling pages are not leaves, then the pointer map entry - ** associated with the right-child of each sibling may also need to be - ** updated. This happens below, after the sibling pages have been + ** If the sibling pages are not leaves, then the pointer map entry + ** associated with the right-child of each sibling may also need to be + ** updated. This happens below, after the sibling pages have been ** populated, not here. */ - if( ISAUTOVACUUM ){ - MemPage *pNew = apNew[0]; - u8 *aOld = pNew->aData; + if( ISAUTOVACUUM(pBt) ){ + MemPage *pOld; + MemPage *pNew = pOld = apNew[0]; int cntOldNext = pNew->nCell + pNew->nOverflow; - int usableSize = pBt->usableSize; int iNew = 0; int iOld = 0; for(i=0; i=0 && iOldnCell + pOld->nOverflow + !leafData; - aOld = pOld->aData; } if( i==cntNew[iNew] ){ pNew = apNew[++iNew]; @@ -69784,20 +78153,20 @@ static int balance_nonroot( } /* Cell pCell is destined for new sibling page pNew. Originally, it - ** was either part of sibling page iOld (possibly an overflow cell), + ** was either part of sibling page iOld (possibly an overflow cell), ** or else the divider cell to the left of sibling page iOld. So, ** if sibling page iOld had the same page number as pNew, and if ** pCell really was a part of sibling page iOld (not a divider or ** overflow cell), we can skip updating the pointer map entries. */ if( iOld>=nNew || pNew->pgno!=aPgno[iOld] - || !SQLITE_WITHIN(pCell,aOld,&aOld[usableSize]) + || !SQLITE_WITHIN(pCell,pOld->aData,pOld->aDataEnd) ){ if( !leafCorrection ){ ptrmapPut(pBt, get4byte(pCell), PTRMAP_BTREE, pNew->pgno, &rc); } if( cachedCellSize(&b,i)>pNew->minLocal ){ - ptrmapPutOvflPtr(pNew, pCell, &rc); + ptrmapPutOvflPtr(pNew, pOld, pCell, &rc); } if( rc ) goto balance_cleanup; } @@ -69809,6 +78178,7 @@ static int balance_nonroot( u8 *pCell; u8 *pTemp; int sz; + u8 *pSrcEnd; MemPage *pNew = apNew[i]; j = cntNew[i]; @@ -69820,9 +78190,9 @@ static int balance_nonroot( if( !pNew->leaf ){ memcpy(&pNew->aData[8], pCell, 4); }else if( leafData ){ - /* If the tree is a leaf-data tree, and the siblings are leaves, - ** then there is no divider cell in b.apCell[]. Instead, the divider - ** cell consists of the integer key for the right-most cell of + /* If the tree is a leaf-data tree, and the siblings are leaves, + ** then there is no divider cell in b.apCell[]. Instead, the divider + ** cell consists of the integer key for the right-most cell of ** the sibling-page assembled above only. */ CellInfo info; @@ -69835,9 +78205,9 @@ static int balance_nonroot( pCell -= 4; /* Obscure case for non-leaf-data trees: If the cell at pCell was ** previously stored on a leaf node, and its reported size was 4 - ** bytes, then it may actually be smaller than this + ** bytes, then it may actually be smaller than this ** (see btreeParseCellPtr(), 4 bytes is the minimum size of - ** any cell). But it is important to pass the correct size to + ** any cell). But it is important to pass the correct size to ** insertCell(), so reparse the cell now. ** ** This can only happen for b-trees used to evaluate "IN (SELECT ...)" @@ -69852,7 +78222,13 @@ static int balance_nonroot( iOvflSpace += sz; assert( sz<=pBt->maxLocal+23 ); assert( iOvflSpace <= (int)pBt->pageSize ); - insertCell(pParent, nxDiv+i, pCell, sz, pTemp, pNew->pgno, &rc); + for(k=0; ALWAYS(kpgno); if( rc!=SQLITE_OK ) goto balance_cleanup; assert( sqlite3PagerIswriteable(pParent->pDbPage) ); } @@ -69882,6 +78258,8 @@ static int balance_nonroot( for(i=1-nNew; i=0 && iPg=1 || i>=0 ); + assert( iPg=0 /* On the upwards pass, or... */ || cntOld[iPg-1]>=cntNew[iPg-1] /* Condition (1) is true */ @@ -69929,8 +78307,8 @@ static int balance_nonroot( ** b-tree structure by one. This is described as the "balance-shallower" ** sub-algorithm in some documentation. ** - ** If this is an auto-vacuum database, the call to copyNodeContent() - ** sets all pointer-map entries corresponding to database image pages + ** If this is an auto-vacuum database, the call to copyNodeContent() + ** sets all pointer-map entries corresponding to database image pages ** for which the pointer is stored within the content being copied. ** ** It is critical that the child page be defragmented before being @@ -69941,13 +78319,14 @@ static int balance_nonroot( assert( nNew==1 || CORRUPT_DB ); rc = defragmentPage(apNew[0], -1); testcase( rc!=SQLITE_OK ); - assert( apNew[0]->nFree == - (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2) + assert( apNew[0]->nFree == + (get2byteNotZero(&apNew[0]->aData[5]) - apNew[0]->cellOffset + - apNew[0]->nCell*2) || rc!=SQLITE_OK ); copyNodeContent(apNew[0], pParent, &rc); freePage(apNew[0], &rc); - }else if( ISAUTOVACUUM && !leafCorrection ){ + }else if( ISAUTOVACUUM(pBt) && !leafCorrection ){ /* Fix the pointer map entries associated with the right-child of each ** sibling page. All other pointer map entries have already been taken ** care of. */ @@ -69958,7 +78337,7 @@ static int balance_nonroot( } assert( pParent->isInit ); - TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n", + TRACE(("BALANCE: finished: old=%u new=%u cells=%u\n", nOld, nNew, b.nCell)); /* Free any old pages that were not reused as new pages. @@ -69968,9 +78347,9 @@ static int balance_nonroot( } #if 0 - if( ISAUTOVACUUM && rc==SQLITE_OK && apNew[0]->isInit ){ + if( ISAUTOVACUUM(pBt) && rc==SQLITE_OK && apNew[0]->isInit ){ /* The ptrmapCheckPages() contains assert() statements that verify that - ** all pointer map pages are set correctly. This is helpful while + ** all pointer map pages are set correctly. This is helpful while ** debugging. This is usually disabled because a corrupt database may ** cause an assert() statement to fail. */ ptrmapCheckPages(apNew, nNew); @@ -70000,15 +78379,15 @@ balance_cleanup: ** ** A new child page is allocated and the contents of the current root ** page, including overflow cells, are copied into the child. The root -** page is then overwritten to make it an empty page with the right-child +** page is then overwritten to make it an empty page with the right-child ** pointer pointing to the new page. ** -** Before returning, all pointer-map entries corresponding to pages +** Before returning, all pointer-map entries corresponding to pages ** that the new child-page now contains pointers to are updated. The ** entry corresponding to the new right-child pointer of the root ** page is also updated. ** -** If successful, *ppChild is set to contain a reference to the child +** If successful, *ppChild is set to contain a reference to the child ** page and SQLITE_OK is returned. In this case the caller is required ** to call releasePage() on *ppChild exactly once. If an error occurs, ** an error code is returned and *ppChild is set to 0. @@ -70022,7 +78401,7 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){ assert( pRoot->nOverflow>0 ); assert( sqlite3_mutex_held(pBt->mutex) ); - /* Make pRoot, the root page of the b-tree, writable. Allocate a new + /* Make pRoot, the root page of the b-tree, writable. Allocate a new ** page that will become the new right-child of pPage. Copy the contents ** of the node stored on pRoot into the new child page. */ @@ -70030,7 +78409,7 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){ if( rc==SQLITE_OK ){ rc = allocateBtreePage(pBt,&pChild,&pgnoChild,pRoot->pgno,0); copyNodeContent(pRoot, pChild, &rc); - if( ISAUTOVACUUM ){ + if( ISAUTOVACUUM(pBt) ){ ptrmapPut(pBt, pgnoChild, PTRMAP_BTREE, pRoot->pgno, &rc); } } @@ -70041,9 +78420,9 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){ } assert( sqlite3PagerIswriteable(pChild->pDbPage) ); assert( sqlite3PagerIswriteable(pRoot->pDbPage) ); - assert( pChild->nCell==pRoot->nCell ); + assert( pChild->nCell==pRoot->nCell || CORRUPT_DB ); - TRACE(("BALANCE: copy root %d into %d\n", pRoot->pgno, pChild->pgno)); + TRACE(("BALANCE: copy root %u into %u\n", pRoot->pgno, pChild->pgno)); /* Copy the overflow cells from pRoot to pChild */ memcpy(pChild->aiOvfl, pRoot->aiOvfl, @@ -70060,10 +78439,34 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){ return SQLITE_OK; } +/* +** Return SQLITE_CORRUPT if any cursor other than pCur is currently valid +** on the same B-tree as pCur. +** +** This can occur if a database is corrupt with two or more SQL tables +** pointing to the same b-tree. If an insert occurs on one SQL table +** and causes a BEFORE TRIGGER to do a secondary insert on the other SQL +** table linked to the same b-tree. If the secondary insert causes a +** rebalance, that can change content out from under the cursor on the +** first SQL table, violating invariants on the first insert. +*/ +static int anotherValidCursor(BtCursor *pCur){ + BtCursor *pOther; + for(pOther=pCur->pBt->pCursor; pOther; pOther=pOther->pNext){ + if( pOther!=pCur + && pOther->eState==CURSOR_VALID + && pOther->pPage==pCur->pPage + ){ + return SQLITE_CORRUPT_BKPT; + } + } + return SQLITE_OK; +} + /* ** The page that pCur currently points to has just been modified in ** some way. This function figures out if this modification means the -** tree needs to be balanced, and if so calls the appropriate balancing +** tree needs to be balanced, and if so calls the appropriate balancing ** routine. Balancing routines are: ** ** balance_quick() @@ -70072,7 +78475,6 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){ */ static int balance(BtCursor *pCur){ int rc = SQLITE_OK; - const int nMin = pCur->pBt->usableSize * 2 / 3; u8 aBalanceQuickSpace[13]; u8 *pFree = 0; @@ -70080,16 +78482,23 @@ static int balance(BtCursor *pCur){ VVA_ONLY( int balance_deeper_called = 0 ); do { - int iPage = pCur->iPage; + int iPage; MemPage *pPage = pCur->pPage; - if( iPage==0 ){ - if( pPage->nOverflow ){ + if( NEVER(pPage->nFree<0) && btreeComputeFreeSpace(pPage) ) break; + if( pPage->nOverflow==0 && pPage->nFree*3<=(int)pCur->pBt->usableSize*2 ){ + /* No rebalance required as long as: + ** (1) There are no overflow cells + ** (2) The amount of free space on the page is less than 2/3rds of + ** the total usable space on the page. */ + break; + }else if( (iPage = pCur->iPage)==0 ){ + if( pPage->nOverflow && (rc = anotherValidCursor(pCur))==SQLITE_OK ){ /* The root page of the b-tree is overfull. In this case call the ** balance_deeper() function to create a new child for the root-page ** and copy the current contents of the root-page to it. The ** next iteration of the do-loop will balance the child page. - */ + */ assert( balance_deeper_called==0 ); VVA_ONLY( balance_deeper_called++ ); rc = balance_deeper(pPage, &pCur->apPage[1]); @@ -70104,13 +78513,19 @@ static int balance(BtCursor *pCur){ }else{ break; } - }else if( pPage->nOverflow==0 && pPage->nFree<=nMin ){ - break; + }else if( sqlite3PagerPageRefcount(pPage->pDbPage)>1 ){ + /* The page being written is not a root page, and there is currently + ** more than one reference to it. This only happens if the page is one + ** of its own ancestor pages. Corruption. */ + rc = SQLITE_CORRUPT_BKPT; }else{ MemPage * const pParent = pCur->apPage[iPage-1]; int const iIdx = pCur->aiIdx[iPage-1]; rc = sqlite3PagerWrite(pParent->pDbPage); + if( rc==SQLITE_OK && pParent->nFree<0 ){ + rc = btreeComputeFreeSpace(pParent); + } if( rc==SQLITE_OK ){ #ifndef SQLITE_OMIT_QUICKBALANCE if( pPage->intKeyLeaf @@ -70122,17 +78537,17 @@ static int balance(BtCursor *pCur){ /* Call balance_quick() to create a new sibling of pPage on which ** to store the overflow cell. balance_quick() inserts a new cell ** into pParent, which may cause pParent overflow. If this - ** happens, the next iteration of the do-loop will balance pParent + ** happens, the next iteration of the do-loop will balance pParent ** use either balance_nonroot() or balance_deeper(). Until this ** happens, the overflow cell is stored in the aBalanceQuickSpace[] - ** buffer. + ** buffer. ** ** The purpose of the following assert() is to check that only a ** single call to balance_quick() is made for each call to this ** function. If this were not verified, a subtle bug involving reuse ** of the aBalanceQuickSpace[] might sneak in. */ - assert( balance_quick_called==0 ); + assert( balance_quick_called==0 ); VVA_ONLY( balance_quick_called++ ); rc = balance_quick(pParent, pPage, aBalanceQuickSpace); }else @@ -70143,15 +78558,15 @@ static int balance(BtCursor *pCur){ ** modifying the contents of pParent, which may cause pParent to ** become overfull or underfull. The next iteration of the do-loop ** will balance the parent page to correct this. - ** + ** ** If the parent page becomes overfull, the overflow cell or cells - ** are stored in the pSpace buffer allocated immediately below. + ** are stored in the pSpace buffer allocated immediately below. ** A subsequent iteration of the do-loop will deal with this by ** calling balance_nonroot() (balance_deeper() may be called first, ** but it doesn't deal with overflow cells - just moves them to a - ** different page). Once this subsequent call to balance_nonroot() + ** different page). Once this subsequent call to balance_nonroot() ** has completed, it is safe to release the pSpace buffer used by - ** the previous call, as the overflow cell data will have been + ** the previous call, as the overflow cell data will have been ** copied either into the body of a database page or into the new ** pSpace buffer passed to the latter call to balance_nonroot(). */ @@ -70159,9 +78574,9 @@ static int balance(BtCursor *pCur){ rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1, pCur->hints&BTREE_BULKLOAD); if( pFree ){ - /* If pFree is not NULL, it points to the pSpace buffer used + /* If pFree is not NULL, it points to the pSpace buffer used ** by a previous call to balance_nonroot(). Its contents are - ** now stored either on real database pages or within the + ** now stored either on real database pages or within the ** new pSpace buffer, so it may be safely freed here. */ sqlite3PageFree(pFree); } @@ -70201,7 +78616,7 @@ static int btreeOverwriteContent( ){ int nData = pX->nData - iOffset; if( nData<=0 ){ - /* Overwritting with zeros */ + /* Overwriting with zeros */ int i; for(i=0; ipData) + iOffset, iAmt)!=0 ){ int rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; - memcpy(pDest, ((u8*)pX->pData) + iOffset, iAmt); + /* In a corrupt database, it is possible for the source and destination + ** buffers to overlap. This is harmless since the database is already + ** corrupt but it does cause valgrind and ASAN warnings. So use + ** memmove(). */ + memmove(pDest, ((u8*)pX->pData) + iOffset, iAmt); } } return SQLITE_OK; @@ -70229,9 +78648,13 @@ static int btreeOverwriteContent( /* ** Overwrite the cell that cursor pCur is pointing to with fresh content -** contained in pX. +** contained in pX. In this variant, pCur is pointing to an overflow +** cell. */ -static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){ +static SQLITE_NOINLINE int btreeOverwriteOverflowCell( + BtCursor *pCur, /* Cursor pointing to cell to overwrite */ + const BtreePayload *pX /* Content to write into the cell */ +){ int iOffset; /* Next byte of pX->pData to write */ int nTotal = pX->nData + pX->nZero; /* Total bytes of to write */ int rc; /* Return code */ @@ -70240,14 +78663,12 @@ static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){ Pgno ovflPgno; /* Next overflow page to write */ u32 ovflPageSize; /* Size to write on overflow page */ - if( pCur->info.pPayload + pCur->info.nLocal > pPage->aDataEnd ){ - return SQLITE_CORRUPT_BKPT; - } + assert( pCur->info.nLocalinfo.pPayload, pX, 0, pCur->info.nLocal); if( rc ) return rc; - if( pCur->info.nLocal==nTotal ) return SQLITE_OK; /* Now overwrite the overflow pages */ iOffset = pCur->info.nLocal; @@ -70259,7 +78680,7 @@ static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){ do{ rc = btreeGetPage(pBt, ovflPgno, &pPage, 0); if( rc ) return rc; - if( sqlite3PagerPageRefcount(pPage->pDbPage)!=1 ){ + if( sqlite3PagerPageRefcount(pPage->pDbPage)!=1 || pPage->isInit ){ rc = SQLITE_CORRUPT_BKPT; }else{ if( iOffset+ovflPageSize<(u32)nTotal ){ @@ -70274,7 +78695,30 @@ static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){ if( rc ) return rc; iOffset += ovflPageSize; }while( iOffsetnData + pX->nZero; /* Total bytes of to write */ + MemPage *pPage = pCur->pPage; /* Page being written */ + + if( pCur->info.pPayload + pCur->info.nLocal > pPage->aDataEnd + || pCur->info.pPayload < pPage->aData + pPage->cellOffset + ){ + return SQLITE_CORRUPT_BKPT; + } + if( pCur->info.nLocal==nTotal ){ + /* The entire cell is local */ + return btreeOverwriteContent(pPage, pCur->info.pPayload, pX, + 0, pCur->info.nLocal); + }else{ + /* The cell contains overflow content */ + return btreeOverwriteOverflowCell(pCur, pX); + } } @@ -70290,11 +78734,11 @@ static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){ ** hold the content of the row. ** ** For an index btree (used for indexes and WITHOUT ROWID tables), the -** key is an arbitrary byte sequence stored in pX.pKey,nKey. The +** key is an arbitrary byte sequence stored in pX.pKey,nKey. The ** pX.pData,nData,nZero fields must be zero. ** ** If the seekResult parameter is non-zero, then a successful call to -** MovetoUnpacked() to seek cursor pCur to (pKey,nKey) has already +** sqlite3BtreeIndexMoveto() to seek cursor pCur to (pKey,nKey) has already ** been performed. In other words, if seekResult!=0 then the cursor ** is currently pointing to a cell that will be adjacent to the cell ** to be inserted. If seekResult<0 then pCur points to a cell that is @@ -70312,7 +78756,7 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( BtCursor *pCur, /* Insert data into the table of this cursor */ const BtreePayload *pX, /* Content of the row to be inserted */ int flags, /* True if this is likely an append */ - int seekResult /* Result of prior MovetoUnpacked() call */ + int seekResult /* Result of prior IndexMoveto() call */ ){ int rc; int loc = seekResult; /* -1: before desired location +1: after */ @@ -70320,21 +78764,50 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( int idx; MemPage *pPage; Btree *p = pCur->pBtree; - BtShared *pBt = p->pBt; unsigned char *oldCell; unsigned char *newCell = 0; - assert( (flags & (BTREE_SAVEPOSITION|BTREE_APPEND))==flags ); + assert( (flags & (BTREE_SAVEPOSITION|BTREE_APPEND|BTREE_PREFORMAT))==flags ); + assert( (flags & BTREE_PREFORMAT)==0 || seekResult || pCur->pKeyInfo==0 ); - if( pCur->eState==CURSOR_FAULT ){ - assert( pCur->skipNext!=SQLITE_OK ); - return pCur->skipNext; + /* Save the positions of any other cursors open on this table. + ** + ** In some cases, the call to btreeMoveto() below is a no-op. For + ** example, when inserting data into a table with auto-generated integer + ** keys, the VDBE layer invokes sqlite3BtreeLast() to figure out the + ** integer key to use. It then calls this function to actually insert the + ** data into the intkey B-Tree. In this case btreeMoveto() recognizes + ** that the cursor is already where it needs to be and returns without + ** doing any work. To avoid thwarting these optimizations, it is important + ** not to clear the cursor here. + */ + if( pCur->curFlags & BTCF_Multiple ){ + rc = saveAllCursors(p->pBt, pCur->pgnoRoot, pCur); + if( rc ) return rc; + if( loc && pCur->iPage<0 ){ + /* This can only happen if the schema is corrupt such that there is more + ** than one table or index with the same root page as used by the cursor. + ** Which can only happen if the SQLITE_NoSchemaError flag was set when + ** the schema was loaded. This cannot be asserted though, as a user might + ** set the flag, load the schema, and then unset the flag. */ + return SQLITE_CORRUPT_BKPT; + } + } + + /* Ensure that the cursor is not in the CURSOR_FAULT state and that it + ** points to a valid cell. + */ + if( pCur->eState>=CURSOR_REQUIRESEEK ){ + testcase( pCur->eState==CURSOR_REQUIRESEEK ); + testcase( pCur->eState==CURSOR_FAULT ); + rc = moveToRoot(pCur); + if( rc && rc!=SQLITE_EMPTY ) return rc; } assert( cursorOwnsBtShared(pCur) ); assert( (pCur->curFlags & BTCF_WriteFlag)!=0 - && pBt->inTransaction==TRANS_WRITE - && (pBt->btsFlags & BTS_READ_ONLY)==0 ); + && p->pBt->inTransaction==TRANS_WRITE + && (p->pBt->btsFlags & BTS_READ_ONLY)==0 ); assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); /* Assert that the caller has been consistent. If this cursor was opened @@ -70342,38 +78815,23 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** keys with no associated data. If the cursor was opened expecting an ** intkey table, the caller should be inserting integer keys with a ** blob of associated data. */ - assert( (pX->pKey==0)==(pCur->pKeyInfo==0) ); - - /* Save the positions of any other cursors open on this table. - ** - ** In some cases, the call to btreeMoveto() below is a no-op. For - ** example, when inserting data into a table with auto-generated integer - ** keys, the VDBE layer invokes sqlite3BtreeLast() to figure out the - ** integer key to use. It then calls this function to actually insert the - ** data into the intkey B-Tree. In this case btreeMoveto() recognizes - ** that the cursor is already where it needs to be and returns without - ** doing any work. To avoid thwarting these optimizations, it is important - ** not to clear the cursor here. - */ - if( pCur->curFlags & BTCF_Multiple ){ - rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); - if( rc ) return rc; - } + assert( (flags & BTREE_PREFORMAT) || (pX->pKey==0)==(pCur->pKeyInfo==0) ); if( pCur->pKeyInfo==0 ){ assert( pX->pKey==0 ); - /* If this is an insert into a table b-tree, invalidate any incrblob + /* If this is an insert into a table b-tree, invalidate any incrblob ** cursors open on the row being replaced */ - invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0); + if( p->hasIncrblobCur ){ + invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0); + } - /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing + /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing ** to a row with the same key as the new entry being inserted. */ #ifdef SQLITE_DEBUG if( flags & BTREE_SAVEPOSITION ){ assert( pCur->curFlags & BTCF_ValidNKey ); assert( pX->nKey==pCur->info.nKey ); - assert( pCur->info.nSize!=0 ); assert( loc==0 ); } #endif @@ -70398,13 +78856,14 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** to an adjacent cell. Move the cursor so that it is pointing either ** to the cell to be overwritten or an adjacent cell. */ - rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, flags!=0, &loc); + rc = sqlite3BtreeTableMoveto(pCur, pX->nKey, + (flags & BTREE_APPEND)!=0, &loc); if( rc ) return rc; } }else{ /* This is an index or a WITHOUT ROWID table */ - /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing + /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing ** to a row with the same key as the new entry being inserted. */ assert( (flags & BTREE_SAVEPOSITION)==0 || loc==0 ); @@ -70421,13 +78880,11 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( r.aMem = pX->aMem; r.nField = pX->nMem; r.default_rc = 0; - r.errCode = 0; - r.r1 = 0; - r.r2 = 0; r.eqSeen = 0; - rc = sqlite3BtreeMovetoUnpacked(pCur, &r, 0, flags!=0, &loc); + rc = sqlite3BtreeIndexMoveto(pCur, &r, &loc); }else{ - rc = btreeMoveto(pCur, pX->pKey, pX->nKey, flags!=0, &loc); + rc = btreeMoveto(pCur, pX->pKey, pX->nKey, + (flags & BTREE_APPEND)!=0, &loc); } if( rc ) return rc; } @@ -70446,28 +78903,57 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( return btreeOverwriteCell(pCur, &x2); } } - } - assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) ); + assert( pCur->eState==CURSOR_VALID + || (pCur->eState==CURSOR_INVALID && loc) || CORRUPT_DB ); pPage = pCur->pPage; - assert( pPage->intKey || pX->nKey>=0 ); + assert( pPage->intKey || pX->nKey>=0 || (flags & BTREE_PREFORMAT) ); assert( pPage->leaf || !pPage->intKey ); + if( pPage->nFree<0 ){ + if( NEVER(pCur->eState>CURSOR_INVALID) ){ + /* ^^^^^--- due to the moveToRoot() call above */ + rc = SQLITE_CORRUPT_BKPT; + }else{ + rc = btreeComputeFreeSpace(pPage); + } + if( rc ) return rc; + } - TRACE(("INSERT: table=%d nkey=%lld ndata=%d page=%d %s\n", + TRACE(("INSERT: table=%u nkey=%lld ndata=%u page=%u %s\n", pCur->pgnoRoot, pX->nKey, pX->nData, pPage->pgno, loc==0 ? "overwrite" : "new entry")); - assert( pPage->isInit ); - newCell = pBt->pTmpSpace; + assert( pPage->isInit || CORRUPT_DB ); + newCell = p->pBt->pTmpSpace; assert( newCell!=0 ); - rc = fillInCell(pPage, newCell, pX, &szNew); - if( rc ) goto end_insert; + assert( BTREE_PREFORMAT==OPFLAG_PREFORMAT ); + if( flags & BTREE_PREFORMAT ){ + rc = SQLITE_OK; + szNew = p->pBt->nPreformatSize; + if( szNew<4 ) szNew = 4; + if( ISAUTOVACUUM(p->pBt) && szNew>pPage->maxLocal ){ + CellInfo info; + pPage->xParseCell(pPage, newCell, &info); + if( info.nPayload!=info.nLocal ){ + Pgno ovfl = get4byte(&newCell[szNew-4]); + ptrmapPut(p->pBt, ovfl, PTRMAP_OVERFLOW1, pPage->pgno, &rc); + if( NEVER(rc) ) goto end_insert; + } + } + }else{ + rc = fillInCell(pPage, newCell, pX, &szNew); + if( rc ) goto end_insert; + } assert( szNew==pPage->xCellSize(pPage, newCell) ); - assert( szNew <= MX_CELL_SIZE(pBt) ); + assert( szNew <= MX_CELL_SIZE(p->pBt) ); idx = pCur->ix; + pCur->info.nSize = 0; if( loc==0 ){ CellInfo info; - assert( idxnCell ); + assert( idx>=0 ); + if( idx>=pPage->nCell ){ + return SQLITE_CORRUPT_BKPT; + } rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ){ goto end_insert; @@ -70476,21 +78962,28 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( if( !pPage->leaf ){ memcpy(newCell, oldCell, 4); } - rc = clearCell(pPage, oldCell, &info); - if( info.nSize==szNew && info.nLocal==info.nPayload - && (!ISAUTOVACUUM || szNewminLocal) + BTREE_CLEAR_CELL(rc, pPage, oldCell, info); + testcase( pCur->curFlags & BTCF_ValidOvfl ); + invalidateOverflowCache(pCur); + if( info.nSize==szNew && info.nLocal==info.nPayload + && (!ISAUTOVACUUM(p->pBt) || szNewminLocal) ){ /* Overwrite the old cell with the new if they are the same size. ** We could also try to do this if the old cell is smaller, then add ** the leftover space to the free list. But experiments show that ** doing that is no faster then skipping this optimization and just - ** calling dropCell() and insertCell(). + ** calling dropCell() and insertCell(). ** ** This optimization cannot be used on an autovacuum database if the ** new entry uses overflow pages, as the insertCell() call below is ** necessary to add the PTRMAP_OVERFLOW1 pointer-map entry. */ assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */ - if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT; + if( oldCell < pPage->aData+pPage->hdrOffset+10 ){ + return SQLITE_CORRUPT_BKPT; + } + if( oldCell+szNew > pPage->aDataEnd ){ + return SQLITE_CORRUPT_BKPT; + } memcpy(oldCell, newCell, szNew); return SQLITE_OK; } @@ -70503,11 +78996,11 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( }else{ assert( pPage->leaf ); } - insertCell(pPage, idx, newCell, szNew, 0, 0, &rc); + rc = insertCellFast(pPage, idx, newCell, szNew); assert( pPage->nOverflow==0 || rc==SQLITE_OK ); assert( rc!=SQLITE_OK || pPage->nCell>0 || pPage->nOverflow>0 ); - /* If no error has occurred and pPage has an overflow cell, call balance() + /* If no error has occurred and pPage has an overflow cell, call balance() ** to redistribute the cells within the tree. Since balance() may move ** the cursor, zero the BtCursor.info.nSize and BTCF_ValidNKey ** variables. @@ -70527,14 +79020,13 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** larger than the largest existing key, it is possible to insert the ** row without seeking the cursor. This can be a big performance boost. */ - pCur->info.nSize = 0; if( pPage->nOverflow ){ assert( rc==SQLITE_OK ); pCur->curFlags &= ~(BTCF_ValidNKey); rc = balance(pCur); /* Must make sure nOverflow is reset to zero even if the balance() - ** fails. Internal data structure corruption will result otherwise. + ** fails. Internal data structure corruption will result otherwise. ** Also, set the cursor state to invalid. This stops saveCursorPosition() ** from trying to save the current position of the cursor. */ pCur->pPage->nOverflow = 0; @@ -70561,7 +79053,119 @@ end_insert: } /* -** Delete the entry that the cursor is pointing to. +** This function is used as part of copying the current row from cursor +** pSrc into cursor pDest. If the cursors are open on intkey tables, then +** parameter iKey is used as the rowid value when the record is copied +** into pDest. Otherwise, the record is copied verbatim. +** +** This function does not actually write the new value to cursor pDest. +** Instead, it creates and populates any required overflow pages and +** writes the data for the new cell into the BtShared.pTmpSpace buffer +** for the destination database. The size of the cell, in bytes, is left +** in BtShared.nPreformatSize. The caller completes the insertion by +** calling sqlite3BtreeInsert() with the BTREE_PREFORMAT flag specified. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +SQLITE_PRIVATE int sqlite3BtreeTransferRow(BtCursor *pDest, BtCursor *pSrc, i64 iKey){ + BtShared *pBt = pDest->pBt; + u8 *aOut = pBt->pTmpSpace; /* Pointer to next output buffer */ + const u8 *aIn; /* Pointer to next input buffer */ + u32 nIn; /* Size of input buffer aIn[] */ + u32 nRem; /* Bytes of data still to copy */ + + getCellInfo(pSrc); + if( pSrc->info.nPayload<0x80 ){ + *(aOut++) = pSrc->info.nPayload; + }else{ + aOut += sqlite3PutVarint(aOut, pSrc->info.nPayload); + } + if( pDest->pKeyInfo==0 ) aOut += putVarint(aOut, iKey); + nIn = pSrc->info.nLocal; + aIn = pSrc->info.pPayload; + if( aIn+nIn>pSrc->pPage->aDataEnd ){ + return SQLITE_CORRUPT_BKPT; + } + nRem = pSrc->info.nPayload; + if( nIn==nRem && nInpPage->maxLocal ){ + memcpy(aOut, aIn, nIn); + pBt->nPreformatSize = nIn + (aOut - pBt->pTmpSpace); + return SQLITE_OK; + }else{ + int rc = SQLITE_OK; + Pager *pSrcPager = pSrc->pBt->pPager; + u8 *pPgnoOut = 0; + Pgno ovflIn = 0; + DbPage *pPageIn = 0; + MemPage *pPageOut = 0; + u32 nOut; /* Size of output buffer aOut[] */ + + nOut = btreePayloadToLocal(pDest->pPage, pSrc->info.nPayload); + pBt->nPreformatSize = nOut + (aOut - pBt->pTmpSpace); + if( nOutinfo.nPayload ){ + pPgnoOut = &aOut[nOut]; + pBt->nPreformatSize += 4; + } + + if( nRem>nIn ){ + if( aIn+nIn+4>pSrc->pPage->aDataEnd ){ + return SQLITE_CORRUPT_BKPT; + } + ovflIn = get4byte(&pSrc->info.pPayload[nIn]); + } + + do { + nRem -= nOut; + do{ + assert( nOut>0 ); + if( nIn>0 ){ + int nCopy = MIN(nOut, nIn); + memcpy(aOut, aIn, nCopy); + nOut -= nCopy; + nIn -= nCopy; + aOut += nCopy; + aIn += nCopy; + } + if( nOut>0 ){ + sqlite3PagerUnref(pPageIn); + pPageIn = 0; + rc = sqlite3PagerGet(pSrcPager, ovflIn, &pPageIn, PAGER_GET_READONLY); + if( rc==SQLITE_OK ){ + aIn = (const u8*)sqlite3PagerGetData(pPageIn); + ovflIn = get4byte(aIn); + aIn += 4; + nIn = pSrc->pBt->usableSize - 4; + } + } + }while( rc==SQLITE_OK && nOut>0 ); + + if( rc==SQLITE_OK && nRem>0 && ALWAYS(pPgnoOut) ){ + Pgno pgnoNew; + MemPage *pNew = 0; + rc = allocateBtreePage(pBt, &pNew, &pgnoNew, 0, 0); + put4byte(pPgnoOut, pgnoNew); + if( ISAUTOVACUUM(pBt) && pPageOut ){ + ptrmapPut(pBt, pgnoNew, PTRMAP_OVERFLOW2, pPageOut->pgno, &rc); + } + releasePage(pPageOut); + pPageOut = pNew; + if( pPageOut ){ + pPgnoOut = pPageOut->aData; + put4byte(pPgnoOut, 0); + aOut = &pPgnoOut[4]; + nOut = MIN(pBt->usableSize - 4, nRem); + } + } + }while( nRem>0 && rc==SQLITE_OK ); + + releasePage(pPageOut); + sqlite3PagerUnref(pPageIn); + return rc; + } +} + +/* +** Delete the entry that the cursor is pointing to. ** ** If the BTREE_SAVEPOSITION bit of the flags parameter is zero, then ** the cursor is left pointing at an arbitrary location after the delete. @@ -70579,15 +79183,14 @@ end_insert: */ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ Btree *p = pCur->pBtree; - BtShared *pBt = p->pBt; - int rc; /* Return code */ - MemPage *pPage; /* Page to delete cell from */ - unsigned char *pCell; /* Pointer to cell to delete */ - int iCellIdx; /* Index of cell to delete */ - int iCellDepth; /* Depth of node containing pCell */ - CellInfo info; /* Size of the cell being deleted */ - int bSkipnext = 0; /* Leaf cursor in SKIPNEXT state */ - u8 bPreserve = flags & BTREE_SAVEPOSITION; /* Keep cursor valid */ + BtShared *pBt = p->pBt; + int rc; /* Return code */ + MemPage *pPage; /* Page to delete cell from */ + unsigned char *pCell; /* Pointer to cell to delete */ + int iCellIdx; /* Index of cell to delete */ + int iCellDepth; /* Depth of node containing pCell */ + CellInfo info; /* Size of the cell being deleted */ + u8 bPreserve; /* Keep cursor valid. 2 for CURSOR_SKIPNEXT */ assert( cursorOwnsBtShared(pCur) ); assert( pBt->inTransaction==TRANS_WRITE ); @@ -70595,34 +79198,61 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ assert( pCur->curFlags & BTCF_WriteFlag ); assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); assert( !hasReadConflicts(p, pCur->pgnoRoot) ); - assert( pCur->ixpPage->nCell ); - assert( pCur->eState==CURSOR_VALID ); assert( (flags & ~(BTREE_SAVEPOSITION | BTREE_AUXDELETE))==0 ); + if( pCur->eState!=CURSOR_VALID ){ + if( pCur->eState>=CURSOR_REQUIRESEEK ){ + rc = btreeRestoreCursorPosition(pCur); + assert( rc!=SQLITE_OK || CORRUPT_DB || pCur->eState==CURSOR_VALID ); + if( rc || pCur->eState!=CURSOR_VALID ) return rc; + }else{ + return SQLITE_CORRUPT_BKPT; + } + } + assert( pCur->eState==CURSOR_VALID ); iCellDepth = pCur->iPage; iCellIdx = pCur->ix; pPage = pCur->pPage; + if( pPage->nCell<=iCellIdx ){ + return SQLITE_CORRUPT_BKPT; + } pCell = findCell(pPage, iCellIdx); + if( pPage->nFree<0 && btreeComputeFreeSpace(pPage) ){ + return SQLITE_CORRUPT_BKPT; + } + if( pCell<&pPage->aCellIdx[pPage->nCell] ){ + return SQLITE_CORRUPT_BKPT; + } - /* If the bPreserve flag is set to true, then the cursor position must + /* If the BTREE_SAVEPOSITION bit is on, then the cursor position must ** be preserved following this delete operation. If the current delete ** will cause a b-tree rebalance, then this is done by saving the cursor - ** key and leaving the cursor in CURSOR_REQUIRESEEK state before - ** returning. + ** key and leaving the cursor in CURSOR_REQUIRESEEK state before + ** returning. ** - ** Or, if the current delete will not cause a rebalance, then the cursor + ** If the current delete will not cause a rebalance, then the cursor ** will be left in CURSOR_SKIPNEXT state pointing to the entry immediately - ** before or after the deleted entry. In this case set bSkipnext to true. */ + ** before or after the deleted entry. + ** + ** The bPreserve value records which path is required: + ** + ** bPreserve==0 Not necessary to save the cursor position + ** bPreserve==1 Use CURSOR_REQUIRESEEK to save the cursor position + ** bPreserve==2 Cursor won't move. Set CURSOR_SKIPNEXT. + */ + bPreserve = (flags & BTREE_SAVEPOSITION)!=0; if( bPreserve ){ - if( !pPage->leaf - || (pPage->nFree+cellSizePtr(pPage,pCell)+2)>(int)(pBt->usableSize*2/3) + if( !pPage->leaf + || (pPage->nFree+pPage->xCellSize(pPage,pCell)+2) > + (int)(pBt->usableSize*2/3) + || pPage->nCell==1 /* See dbfuzz001.test for a test case */ ){ /* A b-tree rebalance will be required after deleting this entry. ** Save the cursor key. */ rc = saveCursorKey(pCur); if( rc ) return rc; }else{ - bSkipnext = 1; + bPreserve = 2; } } @@ -70648,7 +79278,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ /* If this is a delete operation to remove a row from a table b-tree, ** invalidate any incrblob cursors open on the row being deleted. */ - if( pCur->pKeyInfo==0 ){ + if( pCur->pKeyInfo==0 && p->hasIncrblobCur ){ invalidateIncrblobCursors(p, pCur->pgnoRoot, pCur->info.nKey, 0); } @@ -70657,7 +79287,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ ** itself from within the page. */ rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; - rc = clearCell(pPage, pCell, &info); + BTREE_CLEAR_CELL(rc, pPage, pCell, info); dropCell(pPage, iCellIdx, info.nSize, &rc); if( rc ) return rc; @@ -70672,6 +79302,10 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ Pgno n; unsigned char *pTmp; + if( pLeaf->nFree<0 ){ + rc = btreeComputeFreeSpace(pLeaf); + if( rc ) return rc; + } if( iCellDepthiPage-1 ){ n = pCur->apPage[iCellDepth+1]->pgno; }else{ @@ -70685,7 +79319,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ assert( pTmp!=0 ); rc = sqlite3PagerWrite(pLeaf->pDbPage); if( rc==SQLITE_OK ){ - insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n, &rc); + rc = insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n); } dropCell(pLeaf, pLeaf->nCell-1, nCell, &rc); if( rc ) return rc; @@ -70704,9 +79338,17 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ ** on the leaf node first. If the balance proceeds far enough up the ** tree that we can be sure that any problem in the internal node has ** been corrected, so be it. Otherwise, after balancing the leaf node, - ** walk the cursor up the tree to the internal node and balance it as + ** walk the cursor up the tree to the internal node and balance it as ** well. */ - rc = balance(pCur); + assert( pCur->pPage->nOverflow==0 ); + assert( pCur->pPage->nFree>=0 ); + if( pCur->pPage->nFree*3<=(int)pCur->pBt->usableSize*2 ){ + /* Optimization: If the free space is less than 2/3rds of the page, + ** then balance() will always be a no-op. No need to invoke it. */ + rc = SQLITE_OK; + }else{ + rc = balance(pCur); + } if( rc==SQLITE_OK && pCur->iPage>iCellDepth ){ releasePageNotNull(pCur->pPage); pCur->iPage--; @@ -70718,8 +79360,8 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ } if( rc==SQLITE_OK ){ - if( bSkipnext ){ - assert( bPreserve && (pCur->iPage==iCellDepth || CORRUPT_DB) ); + if( bPreserve>1 ){ + assert( (pCur->iPage==iCellDepth || CORRUPT_DB) ); assert( pPage==pCur->pPage || CORRUPT_DB ); assert( (pPage->nCell>0 || CORRUPT_DB) && iCellIdx<=pPage->nCell ); pCur->eState = CURSOR_SKIPNEXT; @@ -70752,12 +79394,12 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ ** BTREE_INTKEY|BTREE_LEAFDATA Used for SQL tables with rowid keys ** BTREE_ZERODATA Used for SQL indices */ -static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ +static int btreeCreateTable(Btree *p, Pgno *piTable, int createTabFlags){ BtShared *pBt = p->pBt; MemPage *pRoot; Pgno pgnoRoot; int rc; - int ptfFlags; /* Page-type flage for the root page of new table */ + int ptfFlags; /* Page-type flags for the root page of new table */ assert( sqlite3BtreeHoldsMutex(p) ); assert( pBt->inTransaction==TRANS_WRITE ); @@ -70785,6 +79427,9 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ ** created so far, so the new root-page is (meta[3]+1). */ sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot); + if( pgnoRoot>btreePagecount(pBt) ){ + return SQLITE_CORRUPT_BKPT; + } pgnoRoot++; /* The new root-page may not be allocated on a pointer-map page, or the @@ -70794,8 +79439,7 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ pgnoRoot==PENDING_BYTE_PAGE(pBt) ){ pgnoRoot++; } - assert( pgnoRoot>=3 || CORRUPT_DB ); - testcase( pgnoRoot<3 ); + assert( pgnoRoot>=3 ); /* Allocate a page. The page that currently resides at pgnoRoot will ** be moved to the allocated page (unless the allocated page happens @@ -70858,7 +79502,7 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ } }else{ pRoot = pPageMove; - } + } /* Update the pointer-map and meta-data with the new root-page number. */ ptrmapPut(pBt, pgnoRoot, PTRMAP_ROOTPAGE, 0, &rc); @@ -70892,10 +79536,10 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ zeroPage(pRoot, ptfFlags); sqlite3PagerUnref(pRoot->pDbPage); assert( (pBt->openFlags & BTREE_SINGLE)==0 || pgnoRoot==2 ); - *piTable = (int)pgnoRoot; + *piTable = pgnoRoot; return SQLITE_OK; } -SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){ +SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, Pgno *piTable, int flags){ int rc; sqlite3BtreeEnter(p); rc = btreeCreateTable(p, piTable, flags); @@ -70911,7 +79555,7 @@ static int clearDatabasePage( BtShared *pBt, /* The BTree that contains the table */ Pgno pgno, /* Page number to clear */ int freePageFlag, /* Deallocate page if true */ - int *pnChange /* Add number of Cells freed to this counter */ + i64 *pnChange /* Add number of Cells freed to this counter */ ){ MemPage *pPage; int rc; @@ -70924,13 +79568,14 @@ static int clearDatabasePage( if( pgno>btreePagecount(pBt) ){ return SQLITE_CORRUPT_BKPT; } - rc = getAndInitPage(pBt, pgno, &pPage, 0, 0); + rc = getAndInitPage(pBt, pgno, &pPage, 0); if( rc ) return rc; - if( pPage->bBusy ){ + if( (pBt->openFlags & BTREE_SINGLE)==0 + && sqlite3PagerPageRefcount(pPage->pDbPage) != (1 + (pgno==1)) + ){ rc = SQLITE_CORRUPT_BKPT; goto cleardatabasepage_out; } - pPage->bBusy = 1; hdr = pPage->hdrOffset; for(i=0; inCell; i++){ pCell = findCell(pPage, i); @@ -70938,14 +79583,15 @@ static int clearDatabasePage( rc = clearDatabasePage(pBt, get4byte(pCell), 1, pnChange); if( rc ) goto cleardatabasepage_out; } - rc = clearCell(pPage, pCell, &info); + BTREE_CLEAR_CELL(rc, pPage, pCell, info); if( rc ) goto cleardatabasepage_out; } if( !pPage->leaf ){ rc = clearDatabasePage(pBt, get4byte(&pPage->aData[hdr+8]), 1, pnChange); if( rc ) goto cleardatabasepage_out; - }else if( pnChange ){ - assert( pPage->intKey || CORRUPT_DB ); + if( pPage->intKey ) pnChange = 0; + } + if( pnChange ){ testcase( !pPage->intKey ); *pnChange += pPage->nCell; } @@ -70956,7 +79602,6 @@ static int clearDatabasePage( } cleardatabasepage_out: - pPage->bBusy = 0; releasePage(pPage); return rc; } @@ -70970,11 +79615,10 @@ cleardatabasepage_out: ** read cursors on the table. Open write cursors are moved to the ** root of the table. ** -** If pnChange is not NULL, then table iTable must be an intkey table. The -** integer value pointed to by pnChange is incremented by the number of -** entries in the table. +** If pnChange is not NULL, then the integer value pointed to by pnChange +** is incremented by the number of entries in the table. */ -SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){ +SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree *p, int iTable, i64 *pnChange){ int rc; BtShared *pBt = p->pBt; sqlite3BtreeEnter(p); @@ -70986,7 +79630,9 @@ SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){ /* Invalidate all incrblob cursors open on table iTable (assuming iTable ** is the root of a table b-tree - if it is not, the following call is ** a no-op). */ - invalidateIncrblobCursors(p, (Pgno)iTable, 0, 1); + if( p->hasIncrblobCur ){ + invalidateIncrblobCursors(p, (Pgno)iTable, 0, 1); + } rc = clearDatabasePage(pBt, (Pgno)iTable, 0, pnChange); } sqlite3BtreeLeave(p); @@ -71011,12 +79657,12 @@ SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor *pCur){ ** cursors on the table. ** ** If AUTOVACUUM is enabled and the page at iTable is not the last -** root page in the database file, then the last root page +** root page in the database file, then the last root page ** in the database file is moved into the slot formerly occupied by ** iTable and that last slot formerly occupied by the last root page ** is added to the freelist instead of iTable. In this say, all ** root pages are kept at the beginning of the database file, which -** is necessary for AUTOVACUUM to work right. *piMoved is set to the +** is necessary for AUTOVACUUM to work right. *piMoved is set to the ** page number that used to be the last root page in the file before ** the move. If no page gets moved, *piMoved is set to 0. ** The last root page is recorded in meta[3] and the value of @@ -71030,11 +79676,14 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ assert( sqlite3BtreeHoldsMutex(p) ); assert( p->inTrans==TRANS_WRITE ); assert( iTable>=2 ); + if( iTable>btreePagecount(pBt) ){ + return SQLITE_CORRUPT_BKPT; + } - rc = btreeGetPage(pBt, (Pgno)iTable, &pPage, 0); - if( rc ) return rc; rc = sqlite3BtreeClearTable(p, iTable, 0); - if( rc ){ + if( rc ) return rc; + rc = btreeGetPage(pBt, (Pgno)iTable, &pPage, 0); + if( NEVER(rc) ){ releasePage(pPage); return rc; } @@ -71051,7 +79700,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ if( iTable==maxRootPgno ){ /* If the table being dropped is the table with the largest root-page - ** number in the database, put the root page on the free list. + ** number in the database, put the root page on the free list. */ freePage(pPage, &rc); releasePage(pPage); @@ -71060,7 +79709,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ } }else{ /* The table being dropped does not have the largest root-page - ** number in the database. So move the page that does into the + ** number in the database. So move the page that does into the ** gap left by the deleted root-page. */ MemPage *pMove; @@ -71102,7 +79751,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ releasePage(pPage); } #endif - return rc; + return rc; } SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){ int rc; @@ -71121,7 +79770,7 @@ SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){ ** is the number of free pages currently in the database. Meta[1] ** through meta[15] are available for use by higher layers. Meta[0] ** is read-only, the others are read/write. -** +** ** The schema layer numbers meta values differently. At the schema ** layer (and the SetCookie and ReadCookie opcodes) the number of ** free pages is not visible. So Cookie[0] is the same as Meta[1]. @@ -71138,12 +79787,12 @@ SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){ sqlite3BtreeEnter(p); assert( p->inTrans>TRANS_NONE ); - assert( SQLITE_OK==querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK) ); + assert( SQLITE_OK==querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK) ); assert( pBt->pPage1 ); assert( idx>=0 && idx<=15 ); if( idx==BTREE_DATA_VERSION ){ - *pMeta = sqlite3PagerDataVersion(pBt->pPager) + p->iDataVersion; + *pMeta = sqlite3PagerDataVersion(pBt->pPager) + p->iBDataVersion; }else{ *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]); } @@ -71187,16 +79836,15 @@ SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){ return rc; } -#ifndef SQLITE_OMIT_BTREECOUNT /* ** The first argument, pCur, is a cursor opened on some b-tree. Count the ** number of entries in the b-tree and write the result to *pnEntry. ** -** SQLITE_OK is returned if the operation is successfully executed. +** SQLITE_OK is returned if the operation is successfully executed. ** Otherwise, if an error is encountered (i.e. an IO error or database ** corruption) an SQLite error code is returned. */ -SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ +SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){ i64 nEntry = 0; /* Value to return in *pnEntry */ int rc; /* Return code */ @@ -71207,13 +79855,13 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ } /* Unless an error occurs, the following loop runs one iteration for each - ** page in the B-Tree structure (not including overflow pages). + ** page in the B-Tree structure (not including overflow pages). */ - while( rc==SQLITE_OK ){ + while( rc==SQLITE_OK && !AtomicLoad(&db->u1.isInterrupted) ){ int iIdx; /* Index of child node in parent */ MemPage *pPage; /* Current page of the b-tree */ - /* If this is a leaf page or the tree is not an int-key tree, then + /* If this is a leaf page or the tree is not an int-key tree, then ** this page contains countable entries. Increment the entry counter ** accordingly. */ @@ -71222,7 +79870,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ nEntry += pPage->nCell; } - /* pPage is a leaf node. This loop navigates the cursor so that it + /* pPage is a leaf node. This loop navigates the cursor so that it ** points to the first interior cell that it points to the parent of ** the next page in the tree that has not yet been visited. The ** pCur->aiIdx[pCur->iPage] value is set to the index of the parent cell @@ -71246,7 +79894,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ pPage = pCur->pPage; } - /* Descend to the child node of the cell that the cursor currently + /* Descend to the child node of the cell that the cursor currently ** points at. This is the right-child if (iIdx==pPage->nCell). */ iIdx = pCur->ix; @@ -71260,7 +79908,6 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ /* An error has occurred. Return an error code. */ return rc; } -#endif /* ** Return the pager associated with a BTree. This routine is used for @@ -71271,6 +79918,41 @@ SQLITE_PRIVATE Pager *sqlite3BtreePager(Btree *p){ } #ifndef SQLITE_OMIT_INTEGRITY_CHECK +/* +** Record an OOM error during integrity_check +*/ +static void checkOom(IntegrityCk *pCheck){ + pCheck->rc = SQLITE_NOMEM; + pCheck->mxErr = 0; /* Causes integrity_check processing to stop */ + if( pCheck->nErr==0 ) pCheck->nErr++; +} + +/* +** Invoke the progress handler, if appropriate. Also check for an +** interrupt. +*/ +static void checkProgress(IntegrityCk *pCheck){ + sqlite3 *db = pCheck->db; + if( AtomicLoad(&db->u1.isInterrupted) ){ + pCheck->rc = SQLITE_INTERRUPT; + pCheck->nErr++; + pCheck->mxErr = 0; + } +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK + if( db->xProgress ){ + assert( db->nProgressOps>0 ); + pCheck->nStep++; + if( (pCheck->nStep % db->nProgressOps)==0 + && db->xProgress(db->pProgressArg) + ){ + pCheck->rc = SQLITE_INTERRUPT; + pCheck->nErr++; + pCheck->mxErr = 0; + } + } +#endif +} + /* ** Append a message to the error message string. */ @@ -71280,6 +79962,7 @@ static void checkAppendMsg( ... ){ va_list ap; + checkProgress(pCheck); if( !pCheck->mxErr ) return; pCheck->mxErr--; pCheck->nErr++; @@ -71288,12 +79971,13 @@ static void checkAppendMsg( sqlite3_str_append(&pCheck->errMsg, "\n", 1); } if( pCheck->zPfx ){ - sqlite3_str_appendf(&pCheck->errMsg, pCheck->zPfx, pCheck->v1, pCheck->v2); + sqlite3_str_appendf(&pCheck->errMsg, pCheck->zPfx, + pCheck->v0, pCheck->v1, pCheck->v2); } sqlite3_str_vappendf(&pCheck->errMsg, zFormat, ap); va_end(ap); if( pCheck->errMsg.accError==SQLITE_NOMEM ){ - pCheck->mallocFailed = 1; + checkOom(pCheck); } } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -71327,13 +80011,12 @@ static void setPageReferenced(IntegrityCk *pCheck, Pgno iPg){ ** Also check that the page number is in bounds. */ static int checkRef(IntegrityCk *pCheck, Pgno iPage){ - if( iPage==0 ) return 1; - if( iPage>pCheck->nPage ){ - checkAppendMsg(pCheck, "invalid page number %d", iPage); + if( iPage>pCheck->nPage || iPage==0 ){ + checkAppendMsg(pCheck, "invalid page number %u", iPage); return 1; } if( getPageReferenced(pCheck, iPage) ){ - checkAppendMsg(pCheck, "2nd reference to page %d", iPage); + checkAppendMsg(pCheck, "2nd reference to page %u", iPage); return 1; } setPageReferenced(pCheck, iPage); @@ -71342,7 +80025,7 @@ static int checkRef(IntegrityCk *pCheck, Pgno iPage){ #ifndef SQLITE_OMIT_AUTOVACUUM /* -** Check that the entry in the pointer-map for page iChild maps to +** Check that the entry in the pointer-map for page iChild maps to ** page iParent, pointer type ptrType. If not, append an error message ** to pCheck. */ @@ -71358,14 +80041,14 @@ static void checkPtrmap( rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent); if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->mallocFailed = 1; - checkAppendMsg(pCheck, "Failed to read ptrmap key=%d", iChild); + if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) checkOom(pCheck); + checkAppendMsg(pCheck, "Failed to read ptrmap key=%u", iChild); return; } if( ePtrmapType!=eType || iPtrmapParent!=iParent ){ checkAppendMsg(pCheck, - "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)", + "Bad ptr map entry key=%u expected=(%u,%u) got=(%u,%u)", iChild, eType, iParent, ePtrmapType, iPtrmapParent); } } @@ -71378,40 +80061,35 @@ static void checkPtrmap( static void checkList( IntegrityCk *pCheck, /* Integrity checking context */ int isFreeList, /* True for a freelist. False for overflow page list */ - int iPage, /* Page number for first page in the list */ - int N /* Expected number of pages in the list */ + Pgno iPage, /* Page number for first page in the list */ + u32 N /* Expected number of pages in the list */ ){ int i; - int expected = N; - int iFirst = iPage; - while( N-- > 0 && pCheck->mxErr ){ + u32 expected = N; + int nErrAtStart = pCheck->nErr; + while( iPage!=0 && pCheck->mxErr ){ DbPage *pOvflPage; unsigned char *pOvflData; - if( iPage<1 ){ - checkAppendMsg(pCheck, - "%d of %d pages missing from overflow list starting at %d", - N+1, expected, iFirst); - break; - } if( checkRef(pCheck, iPage) ) break; + N--; if( sqlite3PagerGet(pCheck->pPager, (Pgno)iPage, &pOvflPage, 0) ){ - checkAppendMsg(pCheck, "failed to get page %d", iPage); + checkAppendMsg(pCheck, "failed to get page %u", iPage); break; } pOvflData = (unsigned char *)sqlite3PagerGetData(pOvflPage); if( isFreeList ){ - int n = get4byte(&pOvflData[4]); + u32 n = (u32)get4byte(&pOvflData[4]); #ifndef SQLITE_OMIT_AUTOVACUUM if( pCheck->pBt->autoVacuum ){ checkPtrmap(pCheck, iPage, PTRMAP_FREEPAGE, 0); } #endif - if( n>(int)pCheck->pBt->usableSize/4-2 ){ + if( n>pCheck->pBt->usableSize/4-2 ){ checkAppendMsg(pCheck, - "freelist leaf count too big on page %d", iPage); + "freelist leaf count too big on page %u", iPage); N--; }else{ - for(i=0; ipBt->autoVacuum ){ @@ -71437,10 +80115,12 @@ static void checkList( #endif iPage = get4byte(pOvflData); sqlite3PagerUnref(pOvflPage); - - if( isFreeList && N<(iPage!=0) ){ - checkAppendMsg(pCheck, "free-page count in header is too small"); - } + } + if( N && nErrAtStart==pCheck->nErr ){ + checkAppendMsg(pCheck, + "%s is %u but should be %u", + isFreeList ? "size" : "overflow list length", + expected-N, expected); } } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -71463,12 +80143,14 @@ static void checkList( ** property. ** ** This heap is used for cell overlap and coverage testing. Each u32 -** entry represents the span of a cell or freeblock on a btree page. +** entry represents the span of a cell or freeblock on a btree page. ** The upper 16 bits are the index of the first byte of a range and the ** lower 16 bits are the index of the last byte of that range. */ static void btreeHeapInsert(u32 *aHeap, u32 x){ - u32 j, i = ++aHeap[0]; + u32 j, i; + assert( aHeap!=0 ); + i = ++aHeap[0]; aHeap[i] = x; while( (j = i/2)>0 && aHeap[j]>aHeap[i] ){ x = aHeap[j]; @@ -71493,7 +80175,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){ aHeap[j] = x; i = j; } - return 1; + return 1; } #ifndef SQLITE_OMIT_INTEGRITY_CHECK @@ -71501,7 +80183,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){ ** Do various sanity checks on a single page of a tree. Return ** the tree depth. Root pages return 0. Parents of root pages ** return 1, and so forth. -** +** ** These checks are done: ** ** 1. Make sure that cells and freeblocks do not overlap @@ -71513,7 +80195,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){ */ static int checkTreePage( IntegrityCk *pCheck, /* Context for the sanity check */ - int iPage, /* Page number of the page to check */ + Pgno iPage, /* Page number of the page to check */ i64 *piMinKey, /* Write minimum integer primary key here */ i64 maxKey /* Error if integer primary key greater than this */ ){ @@ -71545,13 +80227,15 @@ static int checkTreePage( /* Check that the page exists */ + checkProgress(pCheck); + if( pCheck->mxErr==0 ) goto end_of_check; pBt = pCheck->pBt; usableSize = pBt->usableSize; if( iPage==0 ) return 0; if( checkRef(pCheck, iPage) ) return 0; - pCheck->zPfx = "Page %d: "; + pCheck->zPfx = "Tree %u page %u: "; pCheck->v1 = iPage; - if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){ + if( (rc = btreeGetPage(pBt, iPage, &pPage, 0))!=0 ){ checkAppendMsg(pCheck, "unable to get the page. error code=%d", rc); goto end_of_check; @@ -71567,11 +80251,16 @@ static int checkTreePage( "btreeInitPage() returns error code %d", rc); goto end_of_check; } + if( (rc = btreeComputeFreeSpace(pPage))!=0 ){ + assert( rc==SQLITE_CORRUPT ); + checkAppendMsg(pCheck, "free space corruption", rc); + goto end_of_check; + } data = pPage->aData; hdr = pPage->hdrOffset; /* Set up for cell analysis */ - pCheck->zPfx = "On tree page %d cell %d: "; + pCheck->zPfx = "Tree %u page %u cell %u: "; contentOffset = get2byteNotZero(&data[hdr+5]); assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */ @@ -71591,7 +80280,7 @@ static int checkTreePage( pgno = get4byte(&data[hdr+8]); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ - pCheck->zPfx = "On page %d at right child: "; + pCheck->zPfx = "Tree %u page %u right child: "; checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage); } #endif @@ -71615,7 +80304,7 @@ static int checkTreePage( pc = get2byteAligned(pCellIdx); pCellIdx -= 2; if( pcusableSize-4 ){ - checkAppendMsg(pCheck, "Offset %d out of range %d..%d", + checkAppendMsg(pCheck, "Offset %u out of range %u..%u", pc, contentOffset, usableSize-4); doCoverageCheck = 0; continue; @@ -71639,7 +80328,7 @@ static int checkTreePage( /* Check the content overflow list */ if( info.nPayload>info.nLocal ){ - int nPage; /* Number of pages on the overflow chain */ + u32 nPage; /* Number of pages on the overflow chain */ Pgno pgnoOvfl; /* First page of the overflow chain */ assert( pc + info.nSize - 4 <= usableSize ); nPage = (info.nPayload - info.nLocal + usableSize - 5)/(usableSize - 4); @@ -71694,14 +80383,14 @@ static int checkTreePage( ** ** EVIDENCE-OF: R-20690-50594 The second field of the b-tree page header ** is the offset of the first freeblock, or zero if there are no - ** freeblocks on the page. + ** freeblocks on the page. */ i = get2byte(&data[hdr+1]); while( i>0 ){ int size, j; - assert( (u32)i<=usableSize-4 ); /* Enforced by btreeInitPage() */ + assert( (u32)i<=usableSize-4 ); /* Enforced by btreeComputeFreeSpace() */ size = get2byte(&data[i+2]); - assert( (u32)(i+size)<=usableSize ); /* Enforced by btreeInitPage() */ + assert( (u32)(i+size)<=usableSize ); /* due to btreeComputeFreeSpace() */ btreeHeapInsert(heap, (((u32)i)<<16)|(i+size-1)); /* EVIDENCE-OF: R-58208-19414 The first 2 bytes of a freeblock are a ** big-endian integer which is the offset in the b-tree page of the next @@ -71710,17 +80399,17 @@ static int checkTreePage( j = get2byte(&data[i]); /* EVIDENCE-OF: R-06866-39125 Freeblocks are always connected in order of ** increasing offset. */ - assert( j==0 || j>i+size ); /* Enforced by btreeInitPage() */ - assert( (u32)j<=usableSize-4 ); /* Enforced by btreeInitPage() */ + assert( j==0 || j>i+size ); /* Enforced by btreeComputeFreeSpace() */ + assert( (u32)j<=usableSize-4 ); /* Enforced by btreeComputeFreeSpace() */ i = j; } - /* Analyze the min-heap looking for overlap between cells and/or + /* Analyze the min-heap looking for overlap between cells and/or ** freeblocks, and counting the number of untracked bytes in nFrag. - ** + ** ** Each min-heap entry is of the form: (start_address<<16)|end_address. ** There is an implied first entry the covers the page header, the cell ** pointer index, and the gap between the cell pointer index and the start - ** of cell content. + ** of cell content. ** ** The loop below pulls entries from the min-heap in order and compares ** the start_address against the previous end_address. If there is an @@ -71732,7 +80421,7 @@ static int checkTreePage( while( btreeHeapPull(heap,&x) ){ if( (prev&0xffff)>=(x>>16) ){ checkAppendMsg(pCheck, - "Multiple uses for byte %u of page %d", x>>16, iPage); + "Multiple uses for byte %u of page %u", x>>16, iPage); break; }else{ nFrag += (x>>16) - (prev&0xffff) - 1; @@ -71747,7 +80436,7 @@ static int checkTreePage( */ if( heap[0]==0 && nFrag!=data[hdr+7] ){ checkAppendMsg(pCheck, - "Fragmentation of %d bytes reported as %d on page %d", + "Fragmentation of %u bytes reported as %u on page %u", nFrag, data[hdr+7], iPage); } } @@ -71775,36 +80464,52 @@ end_of_check: ** allocation errors, an error message held in memory obtained from ** malloc is returned if *pnErr is non-zero. If *pnErr==0 then NULL is ** returned. If a memory allocation error occurs, NULL is returned. +** +** If the first entry in aRoot[] is 0, that indicates that the list of +** root pages is incomplete. This is a "partial integrity-check". This +** happens when performing an integrity check on a single table. The +** zero is skipped, of course. But in addition, the freelist checks +** and the checks to make sure every page is referenced are also skipped, +** since obviously it is not possible to know which pages are covered by +** the unverified btrees. Except, if aRoot[1] is 1, then the freelist +** checks are still performed. */ -SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( +SQLITE_PRIVATE int sqlite3BtreeIntegrityCheck( + sqlite3 *db, /* Database connection that is running the check */ Btree *p, /* The btree to be checked */ - int *aRoot, /* An array of root pages numbers for individual trees */ + Pgno *aRoot, /* An array of root pages numbers for individual trees */ int nRoot, /* Number of entries in aRoot[] */ int mxErr, /* Stop reporting errors after this many */ - int *pnErr /* Write number of errors seen to this variable */ + int *pnErr, /* OUT: Write number of errors seen to this variable */ + char **pzOut /* OUT: Write the error message string here */ ){ Pgno i; IntegrityCk sCheck; BtShared *pBt = p->pBt; - int savedDbFlags = pBt->db->flags; + u64 savedDbFlags = pBt->db->flags; char zErr[100]; + int bPartial = 0; /* True if not checking all btrees */ + int bCkFreelist = 1; /* True to scan the freelist */ VVA_ONLY( int nRef ); + assert( nRoot>0 ); + + /* aRoot[0]==0 means this is a partial check */ + if( aRoot[0]==0 ){ + assert( nRoot>1 ); + bPartial = 1; + if( aRoot[1]!=1 ) bCkFreelist = 0; + } sqlite3BtreeEnter(p); assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE ); VVA_ONLY( nRef = sqlite3PagerRefcount(pBt->pPager) ); assert( nRef>=0 ); + memset(&sCheck, 0, sizeof(sCheck)); + sCheck.db = db; sCheck.pBt = pBt; sCheck.pPager = pBt->pPager; sCheck.nPage = btreePagecount(sCheck.pBt); sCheck.mxErr = mxErr; - sCheck.nErr = 0; - sCheck.mallocFailed = 0; - sCheck.zPfx = 0; - sCheck.v1 = 0; - sCheck.v2 = 0; - sCheck.aPgRef = 0; - sCheck.heap = 0; sqlite3StrAccumInit(&sCheck.errMsg, 0, zErr, sizeof(zErr), SQLITE_MAX_LENGTH); sCheck.errMsg.printfFlags = SQLITE_PRINTF_INTERNAL; if( sCheck.nPage==0 ){ @@ -71813,12 +80518,12 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( sCheck.aPgRef = sqlite3MallocZero((sCheck.nPage / 8)+ 1); if( !sCheck.aPgRef ){ - sCheck.mallocFailed = 1; + checkOom(&sCheck); goto integrity_ck_cleanup; } sCheck.heap = (u32*)sqlite3PageMalloc( pBt->pageSize ); if( sCheck.heap==0 ){ - sCheck.mallocFailed = 1; + checkOom(&sCheck); goto integrity_ck_cleanup; } @@ -71827,47 +80532,72 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( /* Check the integrity of the freelist */ - sCheck.zPfx = "Main freelist: "; - checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]), - get4byte(&pBt->pPage1->aData[36])); - sCheck.zPfx = 0; + if( bCkFreelist ){ + sCheck.zPfx = "Freelist: "; + checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]), + get4byte(&pBt->pPage1->aData[36])); + sCheck.zPfx = 0; + } /* Check all the tables. */ +#ifndef SQLITE_OMIT_AUTOVACUUM + if( !bPartial ){ + if( pBt->autoVacuum ){ + Pgno mx = 0; + Pgno mxInHdr; + for(i=0; (int)ipPage1->aData[52]); + if( mx!=mxInHdr ){ + checkAppendMsg(&sCheck, + "max rootpage (%u) disagrees with header (%u)", + mx, mxInHdr + ); + } + }else if( get4byte(&pBt->pPage1->aData[64])!=0 ){ + checkAppendMsg(&sCheck, + "incremental_vacuum enabled with a max rootpage of zero" + ); + } + } +#endif testcase( pBt->db->flags & SQLITE_CellSizeCk ); - pBt->db->flags &= ~SQLITE_CellSizeCk; + pBt->db->flags &= ~(u64)SQLITE_CellSizeCk; for(i=0; (int)iautoVacuum && aRoot[i]>1 ){ + if( pBt->autoVacuum && aRoot[i]>1 && !bPartial ){ checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0); } #endif + sCheck.v0 = aRoot[i]; checkTreePage(&sCheck, aRoot[i], ¬Used, LARGEST_INT64); } pBt->db->flags = savedDbFlags; /* Make sure every page in the file is referenced */ - for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){ + if( !bPartial ){ + for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){ #ifdef SQLITE_OMIT_AUTOVACUUM - if( getPageReferenced(&sCheck, i)==0 ){ - checkAppendMsg(&sCheck, "Page %d is never used", i); - } + if( getPageReferenced(&sCheck, i)==0 ){ + checkAppendMsg(&sCheck, "Page %u: never used", i); + } #else - /* If the database supports auto-vacuum, make sure no tables contain - ** references to pointer-map pages. - */ - if( getPageReferenced(&sCheck, i)==0 && - (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, "Page %d is never used", i); - } - if( getPageReferenced(&sCheck, i)!=0 && - (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i); - } + /* If the database supports auto-vacuum, make sure no tables contain + ** references to pointer-map pages. + */ + if( getPageReferenced(&sCheck, i)==0 && + (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){ + checkAppendMsg(&sCheck, "Page %u: never used", i); + } + if( getPageReferenced(&sCheck, i)!=0 && + (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){ + checkAppendMsg(&sCheck, "Page %u: pointer map referenced", i); + } #endif + } } /* Clean up and report errors. @@ -71875,16 +80605,17 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( integrity_ck_cleanup: sqlite3PageFree(sCheck.heap); sqlite3_free(sCheck.aPgRef); - if( sCheck.mallocFailed ){ - sqlite3_str_reset(&sCheck.errMsg); - sCheck.nErr++; - } *pnErr = sCheck.nErr; - if( sCheck.nErr==0 ) sqlite3_str_reset(&sCheck.errMsg); + if( sCheck.nErr==0 ){ + sqlite3_str_reset(&sCheck.errMsg); + *pzOut = 0; + }else{ + *pzOut = sqlite3StrAccumFinish(&sCheck.errMsg); + } /* Make sure this analysis did not leave any unref() pages. */ assert( nRef==sqlite3PagerRefcount(pBt->pPager) ); sqlite3BtreeLeave(p); - return sqlite3StrAccumFinish(&sCheck.errMsg); + return sCheck.rc; } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -71914,18 +80645,19 @@ SQLITE_PRIVATE const char *sqlite3BtreeGetJournalname(Btree *p){ } /* -** Return non-zero if a transaction is active. +** Return one of SQLITE_TXN_NONE, SQLITE_TXN_READ, or SQLITE_TXN_WRITE +** to describe the current transaction state of Btree p. */ -SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree *p){ +SQLITE_PRIVATE int sqlite3BtreeTxnState(Btree *p){ assert( p==0 || sqlite3_mutex_held(p->db->mutex) ); - return (p && (p->inTrans==TRANS_WRITE)); + return p ? p->inTrans : 0; } #ifndef SQLITE_OMIT_WAL /* ** Run a checkpoint on the Btree passed as the first argument. ** -** Return SQLITE_LOCKED if this or any other connection has an open +** Return SQLITE_LOCKED if this or any other connection has an open ** transaction on the shared-cache the argument Btree is connected to. ** ** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART. @@ -71947,14 +80679,8 @@ SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int * #endif /* -** Return non-zero if a read (or write) transaction is active. +** Return true if there is currently a backup running on Btree p. */ -SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree *p){ - assert( p ); - assert( sqlite3_mutex_held(p->db->mutex) ); - return p->inTrans!=TRANS_NONE; -} - SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree *p){ assert( p ); assert( sqlite3_mutex_held(p->db->mutex) ); @@ -71964,20 +80690,20 @@ SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree *p){ /* ** This function returns a pointer to a blob of memory associated with ** a single shared-btree. The memory is used by client code for its own -** purposes (for example, to store a high-level schema associated with +** purposes (for example, to store a high-level schema associated with ** the shared-btree). The btree layer manages reference counting issues. ** ** The first time this is called on a shared-btree, nBytes bytes of memory -** are allocated, zeroed, and returned to the caller. For each subsequent +** are allocated, zeroed, and returned to the caller. For each subsequent ** call the nBytes parameter is ignored and a pointer to the same blob -** of memory returned. +** of memory returned. ** ** If the nBytes parameter is 0 and the blob of memory has not yet been ** allocated, a null pointer is returned. If the blob has already been ** allocated, it is returned as normal. ** -** Just before the shared-btree is closed, the function passed as the -** xFree argument when the memory allocation was made is invoked on the +** Just before the shared-btree is closed, the function passed as the +** xFree argument when the memory allocation was made is invoked on the ** blob of allocated memory. The xFree function should not call sqlite3_free() ** on the memory, the btree layer does that. */ @@ -71993,15 +80719,15 @@ SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void } /* -** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared -** btree as the argument handle holds an exclusive lock on the -** sqlite_master table. Otherwise SQLITE_OK. +** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared +** btree as the argument handle holds an exclusive lock on the +** sqlite_schema table. Otherwise SQLITE_OK. */ SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *p){ int rc; assert( sqlite3_mutex_held(p->db->mutex) ); sqlite3BtreeEnter(p); - rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); + rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK); assert( rc==SQLITE_OK || rc==SQLITE_LOCKED_SHAREDCACHE ); sqlite3BtreeLeave(p); return rc; @@ -72035,11 +80761,11 @@ SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){ #ifndef SQLITE_OMIT_INCRBLOB /* -** Argument pCsr must be a cursor opened for writing on an -** INTKEY table currently pointing at a valid table entry. +** Argument pCsr must be a cursor opened for writing on an +** INTKEY table currently pointing at a valid table entry. ** This function modifies the data stored as part of that entry. ** -** Only the data content may only be modified, it is not possible to +** Only the data content may only be modified, it is not possible to ** change the length of the data stored. If this function is called with ** parameters that attempt to write past the end of the existing data, ** no modifications are made and SQLITE_CORRUPT is returned. @@ -72070,7 +80796,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void VVA_ONLY(rc =) saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr); assert( rc==SQLITE_OK ); - /* Check some assumptions: + /* Check some assumptions: ** (a) the cursor is open for writing, ** (b) there is a read/write transaction open, ** (c) the connection holds a write-lock on the table (if required), @@ -72089,7 +80815,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void return accessPayload(pCsr, offset, amt, (unsigned char *)z, 1); } -/* +/* ** Mark this cursor as an incremental blob cursor. */ SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *pCur){ @@ -72099,14 +80825,14 @@ SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *pCur){ #endif /* -** Set both the "read version" (single byte at byte offset 18) and +** Set both the "read version" (single byte at byte offset 18) and ** "write version" (single byte at byte offset 19) fields in the database ** header to iVersion. */ SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){ BtShared *pBt = pBtree->pBt; int rc; /* Return code */ - + assert( iVersion==1 || iVersion==2 ); /* If setting the version fields to 1, do not automatically open the @@ -72115,11 +80841,11 @@ SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){ pBt->btsFlags &= ~BTS_NO_WAL; if( iVersion==1 ) pBt->btsFlags |= BTS_NO_WAL; - rc = sqlite3BtreeBeginTrans(pBtree, 0); + rc = sqlite3BtreeBeginTrans(pBtree, 0, 0); if( rc==SQLITE_OK ){ u8 *aData = pBt->pPage1->aData; if( aData[18]!=(u8)iVersion || aData[19]!=(u8)iVersion ){ - rc = sqlite3BtreeBeginTrans(pBtree, 2); + rc = sqlite3BtreeBeginTrans(pBtree, 2, 0); if( rc==SQLITE_OK ){ rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); if( rc==SQLITE_OK ){ @@ -72154,6 +80880,17 @@ SQLITE_PRIVATE int sqlite3BtreeIsReadonly(Btree *p){ */ SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); } +/* +** If no transaction is active and the database is not a temp-db, clear +** the in-memory pager cache. +*/ +SQLITE_PRIVATE void sqlite3BtreeClearCache(Btree *p){ + BtShared *pBt = p->pBt; + if( pBt->inTransaction==TRANS_NONE ){ + sqlite3PagerClearCache(pBt->pPager); + } +} + #if !defined(SQLITE_OMIT_SHARED_CACHE) /* ** Return true if the Btree passed as the only argument is sharable. @@ -72164,7 +80901,7 @@ SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){ /* ** Return the number of connections to the BtShared object accessed by -** the Btree handle passed as the only argument. For private caches +** the Btree handle passed as the only argument. For private caches ** this is always 1. For shared caches it may be 1 or greater. */ SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree *p){ @@ -72186,7 +80923,7 @@ SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree *p){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file contains the implementation of the sqlite3_backup_XXX() +** This file contains the implementation of the sqlite3_backup_XXX() ** API functions and the related features. */ /* #include "sqliteInt.h" */ @@ -72223,15 +80960,15 @@ struct sqlite3_backup { ** Once it has been created using backup_init(), a single sqlite3_backup ** structure may be accessed via two groups of thread-safe entry points: ** -** * Via the sqlite3_backup_XXX() API function backup_step() and +** * Via the sqlite3_backup_XXX() API function backup_step() and ** backup_finish(). Both these functions obtain the source database -** handle mutex and the mutex associated with the source BtShared +** handle mutex and the mutex associated with the source BtShared ** structure, in that order. ** ** * Via the BackupUpdate() and BackupRestart() functions, which are ** invoked by the pager layer to report various state changes in ** the page cache associated with the source database. The mutex -** associated with the source database BtShared structure will always +** associated with the source database BtShared structure will always ** be held when either of these functions are invoked. ** ** The other sqlite3_backup_XXX() API functions, backup_remaining() and @@ -72252,8 +80989,8 @@ struct sqlite3_backup { ** in connection handle pDb. If such a database cannot be found, return ** a NULL pointer and write an error message to pErrorDb. ** -** If the "temp" database is requested, it may need to be opened by this -** function. If an error occurs while doing so, return 0 and write an +** If the "temp" database is requested, it may need to be opened by this +** function. If an error occurs while doing so, return 0 and write an ** error message to pErrorDb. */ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){ @@ -72262,14 +80999,13 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){ if( i==1 ){ Parse sParse; int rc = 0; - memset(&sParse, 0, sizeof(sParse)); - sParse.db = pDb; + sqlite3ParseObjectInit(&sParse,pDb); if( sqlite3OpenTempDatabase(&sParse) ){ sqlite3ErrorWithMsg(pErrorDb, sParse.rc, "%s", sParse.zErrMsg); rc = SQLITE_ERROR; } sqlite3DbFree(pErrorDb, sParse.zErrMsg); - sqlite3ParserReset(&sParse); + sqlite3ParseObjectReset(&sParse); if( rc ){ return 0; } @@ -72289,18 +81025,18 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){ */ static int setDestPgsz(sqlite3_backup *p){ int rc; - rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0); + rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),0,0); return rc; } /* ** Check that there is no open read-transaction on the b-tree passed as the ** second argument. If there is not, return SQLITE_OK. Otherwise, if there -** is an open read-transaction, return SQLITE_ERROR and leave an error +** is an open read-transaction, return SQLITE_ERROR and leave an error ** message in database handle db. */ static int checkReadTransaction(sqlite3 *db, Btree *p){ - if( sqlite3BtreeIsInReadTrans(p) ){ + if( sqlite3BtreeTxnState(p)!=SQLITE_TXN_NONE ){ sqlite3ErrorWithMsg(db, SQLITE_ERROR, "destination database is in use"); return SQLITE_ERROR; } @@ -72366,13 +81102,13 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( p->iNext = 1; p->isAttached = 0; - if( 0==p->pSrc || 0==p->pDest - || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK + if( 0==p->pSrc || 0==p->pDest + || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK ){ /* One (or both) of the named databases did not exist or an OOM ** error was hit. Or there is a transaction open on the destination - ** database. The error has already been written into the pDestDb - ** handle. All that is left to do here is free the sqlite3_backup + ** database. The error has already been written into the pDestDb + ** handle. All that is left to do here is free the sqlite3_backup ** structure. */ sqlite3_free(p); p = 0; @@ -72388,7 +81124,7 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( } /* -** Argument rc is an SQLite error code. Return true if this error is +** Argument rc is an SQLite error code. Return true if this error is ** considered fatal if encountered during a backup operation. All errors ** are considered fatal except for SQLITE_BUSY and SQLITE_LOCKED. */ @@ -72397,8 +81133,8 @@ static int isFatalError(int rc){ } /* -** Parameter zSrcData points to a buffer containing the data for -** page iSrcPg from the source database. Copy this data into the +** Parameter zSrcData points to a buffer containing the data for +** page iSrcPg from the source database. Copy this data into the ** destination database. */ static int backupOnePage( @@ -72412,13 +81148,6 @@ static int backupOnePage( int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest); const int nCopy = MIN(nSrcPgsz, nDestPgsz); const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz; -#ifdef SQLITE_HAS_CODEC - /* Use BtreeGetReserveNoMutex() for the source b-tree, as although it is - ** guaranteed that the shared-mutex is held by this thread, handle - ** p->pSrc may not actually be the owner. */ - int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc); - int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest); -#endif int rc = SQLITE_OK; i64 iOff; @@ -72427,35 +81156,9 @@ static int backupOnePage( assert( !isFatalError(p->rc) ); assert( iSrcPg!=PENDING_BYTE_PAGE(p->pSrc->pBt) ); assert( zSrcData ); + assert( nSrcPgsz==nDestPgsz || sqlite3PagerIsMemdb(pDestPager)==0 ); - /* Catch the case where the destination is an in-memory database and the - ** page sizes of the source and destination differ. - */ - if( nSrcPgsz!=nDestPgsz && sqlite3PagerIsMemdb(pDestPager) ){ - rc = SQLITE_READONLY; - } - -#ifdef SQLITE_HAS_CODEC - /* Backup is not possible if the page size of the destination is changing - ** and a codec is in use. - */ - if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){ - rc = SQLITE_READONLY; - } - - /* Backup is not possible if the number of bytes of reserve space differ - ** between source and destination. If there is a difference, try to - ** fix the destination to agree with the source. If that is not possible, - ** then the backup cannot proceed. - */ - if( nSrcReserve!=nDestReserve ){ - u32 newPgsz = nSrcPgsz; - rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve); - if( rc==SQLITE_OK && newPgsz!=nSrcPgsz ) rc = SQLITE_READONLY; - } -#endif - - /* This loop runs once for each destination page spanned by the source + /* This loop runs once for each destination page spanned by the source ** page. For each iteration, variable iOff is set to the byte offset ** of the destination page. */ @@ -72474,7 +81177,7 @@ static int backupOnePage( ** Then clear the Btree layer MemPage.isInit flag. Both this module ** and the pager code use this trick (clearing the first byte ** of the page 'extra' space to invalidate the Btree layers - ** cached parse of the page). MemPage.isInit is marked + ** cached parse of the page). MemPage.isInit is marked ** "MUST BE FIRST" for this purpose. */ memcpy(zOut, zIn, nCopy); @@ -72494,7 +81197,7 @@ static int backupOnePage( ** exactly iSize bytes. If pFile is not larger than iSize bytes, then ** this function is a no-op. ** -** Return SQLITE_OK if everything is successful, or an SQLite error +** Return SQLITE_OK if everything is successful, or an SQLite error ** code if an error occurs. */ static int backupTruncateFile(sqlite3_file *pFile, i64 iSize){ @@ -72558,8 +81261,8 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ ** one now. If a transaction is opened here, then it will be closed ** before this function exits. */ - if( rc==SQLITE_OK && 0==sqlite3BtreeIsInReadTrans(p->pSrc) ){ - rc = sqlite3BtreeBeginTrans(p->pSrc, 0); + if( rc==SQLITE_OK && SQLITE_TXN_NONE==sqlite3BtreeTxnState(p->pSrc) ){ + rc = sqlite3BtreeBeginTrans(p->pSrc, 0, 0); bCloseTrans = 1; } @@ -72575,10 +81278,10 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ /* Lock the destination database, if it is not locked already. */ if( SQLITE_OK==rc && p->bDestLocked==0 - && SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2)) + && SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2, + (int*)&p->iDestSchema)) ){ p->bDestLocked = 1; - sqlite3BtreeGetMeta(p->pDest, BTREE_SCHEMA_VERSION, &p->iDestSchema); } /* Do not allow backup if the destination database is in WAL mode @@ -72586,10 +81289,13 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ pgszSrc = sqlite3BtreeGetPageSize(p->pSrc); pgszDest = sqlite3BtreeGetPageSize(p->pDest); destMode = sqlite3PagerGetJournalMode(sqlite3BtreePager(p->pDest)); - if( SQLITE_OK==rc && destMode==PAGER_JOURNALMODE_WAL && pgszSrc!=pgszDest ){ + if( SQLITE_OK==rc + && (destMode==PAGER_JOURNALMODE_WAL || sqlite3PagerIsMemdb(pDestPager)) + && pgszSrc!=pgszDest + ){ rc = SQLITE_READONLY; } - + /* Now that there is a read-lock on the source database, query the ** source pager for the number of pages in the database. */ @@ -72616,7 +81322,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ attachBackupObject(p); } } - + /* Update the schema version field in the destination database. This ** is to make sure that the schema-version really does change in ** the case where the source and destination databases have the @@ -72642,12 +81348,12 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ int nDestTruncate; /* Set nDestTruncate to the final number of pages in the destination ** database. The complication here is that the destination page - ** size may be different to the source page size. + ** size may be different to the source page size. ** - ** If the source page size is smaller than the destination page size, + ** If the source page size is smaller than the destination page size, ** round up. In this case the call to sqlite3OsTruncate() below will ** fix the size of the file. However it is important to call - ** sqlite3PagerTruncateImage() here so that any pages in the + ** sqlite3PagerTruncateImage() here so that any pages in the ** destination file that lie beyond the nDestTruncate page mark are ** journalled by PagerCommitPhaseOne() before they are destroyed ** by the file truncation. @@ -72671,7 +81377,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ ** ** * The destination may need to be truncated, and ** - ** * Data stored on the pages immediately following the + ** * Data stored on the pages immediately following the ** pending-byte page in the source database may need to be ** copied into the destination database. */ @@ -72683,7 +81389,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ i64 iEnd; assert( pFile ); - assert( nDestTruncate==0 + assert( nDestTruncate==0 || (i64)nDestTruncate*(i64)pgszDest >= iSize || ( nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1) && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest @@ -72693,7 +81399,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ ** database has been stored in the journal for pDestPager and the ** journal synced to disk. So at this point we may safely modify ** the database file in any way, knowing that if a power failure - ** occurs, the original database will be reconstructed from the + ** occurs, the original database will be reconstructed from the ** journal file. */ sqlite3PagerPagecount(pDestPager, &nDstPage); for(iPg=nDestTruncate; rc==SQLITE_OK && iPg<=(Pgno)nDstPage; iPg++){ @@ -72713,8 +81419,8 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ /* Write the extra pages and truncate the database file as required */ iEnd = MIN(PENDING_BYTE + pgszDest, iSize); for( - iOff=PENDING_BYTE+pgszSrc; - rc==SQLITE_OK && iOffpDest, 0)) @@ -72747,7 +81453,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ } } } - + /* If bCloseTrans is true, then this function opened a read transaction ** on the source database. Close the read transaction here. There is ** no need to check the return values of the btree methods here, as @@ -72759,7 +81465,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc, 0); assert( rc2==SQLITE_OK ); } - + if( rc==SQLITE_IOERR_NOMEM ){ rc = SQLITE_NOMEM_BKPT; } @@ -72796,8 +81502,10 @@ SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){ } if( p->isAttached ){ pp = sqlite3PagerBackupPtr(sqlite3BtreePager(p->pSrc)); + assert( pp!=0 ); while( *pp!=p ){ pp = &(*pp)->pNext; + assert( pp!=0 ); } *pp = p->pNext; } @@ -72839,7 +81547,7 @@ SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p){ } /* -** Return the total number of pages in the source database as of the most +** Return the total number of pages in the source database as of the most ** recent call to sqlite3_backup_step(). */ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){ @@ -72854,7 +81562,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){ /* ** This function is called after the contents of page iPage of the -** source database have been modified. If page iPage has already been +** source database have been modified. If page iPage has already been ** copied into the destination database, then the data written to the ** destination is now invalidated. The destination copy of iPage needs ** to be updated with the new data before the backup operation is @@ -72897,7 +81605,7 @@ SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, con ** Restart the backup process. This is called when the pager layer ** detects that the database has been modified by an external database ** connection. In this case there is no way of knowing which of the -** pages that have been copied into the destination database are still +** pages that have been copied into the destination database are still ** valid and which are not, so the entire process needs to be restarted. ** ** It is assumed that the mutex associated with the BtShared object @@ -72917,8 +81625,8 @@ SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *pBackup){ ** Copy the complete content of pBtFrom into pBtTo. A transaction ** must be active for both files. ** -** The size of file pTo may be reduced by this operation. If anything -** goes wrong, the transaction on pTo is rolled back. If successful, the +** The size of file pTo may be reduced by this operation. If anything +** goes wrong, the transaction on pTo is rolled back. If successful, the ** transaction is committed before returning. */ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ @@ -72928,7 +81636,7 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ sqlite3BtreeEnter(pTo); sqlite3BtreeEnter(pFrom); - assert( sqlite3BtreeIsInTrans(pTo) ); + assert( sqlite3BtreeTxnState(pTo)==SQLITE_TXN_WRITE ); pFd = sqlite3PagerFile(sqlite3BtreePager(pTo)); if( pFd->pMethods ){ i64 nByte = sqlite3BtreeGetPageSize(pFrom)*(i64)sqlite3BtreeLastPage(pFrom); @@ -72948,15 +81656,11 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ b.pDest = pTo; b.iNext = 1; -#ifdef SQLITE_HAS_CODEC - sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom)); -#endif - /* 0x7FFFFFFF is the hard limit for the number of pages in a database ** file. By passing this as the number of pages to copy to - ** sqlite3_backup_step(), we can guarantee that the copy finishes + ** sqlite3_backup_step(), we can guarantee that the copy finishes ** within a single call (unless an error occurs). The assert() statement - ** checks this assumption - (p->rc) should be set to either SQLITE_DONE + ** checks this assumption - (p->rc) should be set to either SQLITE_DONE ** or an error code. */ sqlite3_backup_step(&b, 0x7FFFFFFF); assert( b.rc!=SQLITE_OK ); @@ -72968,7 +81672,7 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ sqlite3PagerClearCache(sqlite3BtreePager(b.pDest)); } - assert( sqlite3BtreeIsInTrans(pTo)==0 ); + assert( sqlite3BtreeTxnState(pTo)!=SQLITE_TXN_WRITE ); copy_finished: sqlite3BtreeLeave(pFrom); sqlite3BtreeLeave(pTo); @@ -72998,6 +81702,11 @@ copy_finished: /* #include "sqliteInt.h" */ /* #include "vdbeInt.h" */ +/* True if X is a power of two. 0 is considered a power of two here. +** In other words, return true if X has at most one bit set. +*/ +#define ISPOWEROF2(X) (((X)&((X)-1))==0) + #ifdef SQLITE_DEBUG /* ** Check invariants on a Mem object. @@ -73006,7 +81715,7 @@ copy_finished: ** this: assert( sqlite3VdbeCheckMemInvariants(pMem) ); */ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ - /* If MEM_Dyn is set then Mem.xDel!=0. + /* If MEM_Dyn is set then Mem.xDel!=0. ** Mem.xDel might not be initialized if MEM_Dyn is clear. */ assert( (p->flags & MEM_Dyn)==0 || p->xDel!=0 ); @@ -73017,13 +81726,12 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ ** That saves a few cycles in inner loops. */ assert( (p->flags & MEM_Dyn)==0 || p->szMalloc==0 ); - /* Cannot be both MEM_Int and MEM_Real at the same time */ - assert( (p->flags & (MEM_Int|MEM_Real))!=(MEM_Int|MEM_Real) ); + /* Cannot have more than one of MEM_Int, MEM_Real, or MEM_IntReal */ + assert( ISPOWEROF2(p->flags & (MEM_Int|MEM_Real|MEM_IntReal)) ); if( p->flags & MEM_Null ){ /* Cannot be both MEM_Null and some other type */ - assert( (p->flags & (MEM_Int|MEM_Real|MEM_Str|MEM_Blob - |MEM_RowSet|MEM_Frame|MEM_Agg))==0 ); + assert( (p->flags & (MEM_Int|MEM_Real|MEM_Str|MEM_Blob|MEM_Agg))==0 ); /* If MEM_Null is set, then either the value is a pure NULL (the usual ** case) or it is a pointer set using sqlite3_bind_pointer() or @@ -73038,7 +81746,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ ((p->flags&MEM_Static)!=0 ? 1 : 0) <= 1 ); /* No other bits set */ - assert( (p->flags & ~(MEM_Null|MEM_Term|MEM_Subtype + assert( (p->flags & ~(MEM_Null|MEM_Term|MEM_Subtype|MEM_FromBind |MEM_Dyn|MEM_Ephem|MEM_Static))==0 ); }else{ /* A pure NULL might have other flags, such as MEM_Static, MEM_Dyn, @@ -73051,7 +81759,9 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ /* The szMalloc field holds the correct memory allocation size */ assert( p->szMalloc==0 - || p->szMalloc==sqlite3DbMallocSize(p->db,p->zMalloc) ); + || (p->flags==MEM_Undefined + && p->szMalloc<=sqlite3DbMallocSize(p->db,p->zMalloc)) + || p->szMalloc==sqlite3DbMallocSize(p->db,p->zMalloc)); /* If p holds a string or blob, the Mem.z must point to exactly ** one of the following: @@ -73062,7 +81772,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ ** (4) A static string or blob */ if( (p->flags & (MEM_Str|MEM_Blob)) && p->n>0 ){ - assert( + assert( ((p->szMalloc>0 && p->z==p->zMalloc)? 1 : 0) + ((p->flags&MEM_Dyn)!=0 ? 1 : 0) + ((p->flags&MEM_Ephem)!=0 ? 1 : 0) + @@ -73073,9 +81783,41 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ } #endif +/* +** Render a Mem object which is one of MEM_Int, MEM_Real, or MEM_IntReal +** into a buffer. +*/ +static void vdbeMemRenderNum(int sz, char *zBuf, Mem *p){ + StrAccum acc; + assert( p->flags & (MEM_Int|MEM_Real|MEM_IntReal) ); + assert( sz>22 ); + if( p->flags & MEM_Int ){ +#if GCC_VERSION>=7000000 + /* Work-around for GCC bug + ** https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96270 */ + i64 x; + assert( (p->flags&MEM_Int)*2==sizeof(x) ); + memcpy(&x, (char*)&p->u, (p->flags&MEM_Int)*2); + p->n = sqlite3Int64ToText(x, zBuf); +#else + p->n = sqlite3Int64ToText(p->u.i, zBuf); +#endif + }else{ + sqlite3StrAccumInit(&acc, 0, zBuf, sz, 0); + sqlite3_str_appendf(&acc, "%!.15g", + (p->flags & MEM_IntReal)!=0 ? (double)p->u.i : p->u.r); + assert( acc.zText==zBuf && acc.mxAlloc<=0 ); + zBuf[acc.nChar] = 0; /* Fast version of sqlite3StrAccumFinish(&acc) */ + p->n = acc.nChar; + } +} + #ifdef SQLITE_DEBUG /* -** Check that string value of pMem agrees with its integer or real value. +** Validity checks on pMem. pMem holds a string. +** +** (1) Check that string value of pMem agrees with its integer or real value. +** (2) Check that the string is correctly zero terminated ** ** A single int or real value always converts to the same strings. But ** many different strings can be converted into the same int or real. @@ -73093,17 +81835,27 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ ** ** This routine is for use inside of assert() statements only. */ -SQLITE_PRIVATE int sqlite3VdbeMemConsistentDualRep(Mem *p){ +SQLITE_PRIVATE int sqlite3VdbeMemValidStrRep(Mem *p){ + Mem tmp; char zBuf[100]; char *z; int i, j, incr; if( (p->flags & MEM_Str)==0 ) return 1; - if( (p->flags & (MEM_Int|MEM_Real))==0 ) return 1; - if( p->flags & MEM_Int ){ - sqlite3_snprintf(sizeof(zBuf),zBuf,"%lld",p->u.i); - }else{ - sqlite3_snprintf(sizeof(zBuf),zBuf,"%!.15g",p->u.r); + if( p->db && p->db->mallocFailed ) return 1; + if( p->flags & MEM_Term ){ + /* Insure that the string is properly zero-terminated. Pay particular + ** attention to the case where p->n is odd */ + if( p->szMalloc>0 && p->z==p->zMalloc ){ + assert( p->enc==SQLITE_UTF8 || p->szMalloc >= ((p->n+1)&~1)+2 ); + assert( p->enc!=SQLITE_UTF8 || p->szMalloc >= p->n+1 ); + } + assert( p->z[p->n]==0 ); + assert( p->enc==SQLITE_UTF8 || p->z[(p->n+1)&~1]==0 ); + assert( p->enc==SQLITE_UTF8 || p->z[((p->n+1)&~1)+1]==0 ); } + if( (p->flags & (MEM_Int|MEM_Real|MEM_IntReal))==0 ) return 1; + memcpy(&tmp, p, sizeof(tmp)); + vdbeMemRenderNum(sizeof(zBuf), zBuf, &tmp); z = p->z; i = j = 0; incr = 1; @@ -73136,10 +81888,15 @@ SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *pMem, int desiredEnc){ #ifndef SQLITE_OMIT_UTF16 int rc; #endif - assert( (pMem->flags&MEM_RowSet)==0 ); + assert( pMem!=0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); assert( desiredEnc==SQLITE_UTF8 || desiredEnc==SQLITE_UTF16LE || desiredEnc==SQLITE_UTF16BE ); - if( !(pMem->flags&MEM_Str) || pMem->enc==desiredEnc ){ + if( !(pMem->flags&MEM_Str) ){ + pMem->enc = desiredEnc; + return SQLITE_OK; + } + if( pMem->enc==desiredEnc ){ return SQLITE_OK; } assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); @@ -73159,8 +81916,7 @@ SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *pMem, int desiredEnc){ } /* -** Make sure pMem->z points to a writable allocation of at least -** min(n,32) bytes. +** Make sure pMem->z points to a writable allocation of at least n bytes. ** ** If the bPreserve argument is true, then copy of the content of ** pMem->z into the new allocation. pMem must be either a string or @@ -73169,7 +81925,7 @@ SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *pMem, int desiredEnc){ */ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPreserve){ assert( sqlite3VdbeCheckMemInvariants(pMem) ); - assert( (pMem->flags&MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); testcase( pMem->db==0 ); /* If the bPreserve flag is set to true, then the memory cell must already @@ -73178,10 +81934,17 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPre testcase( bPreserve && pMem->z==0 ); assert( pMem->szMalloc==0 - || pMem->szMalloc==sqlite3DbMallocSize(pMem->db, pMem->zMalloc) ); - if( n<32 ) n = 32; + || (pMem->flags==MEM_Undefined + && pMem->szMalloc<=sqlite3DbMallocSize(pMem->db,pMem->zMalloc)) + || pMem->szMalloc==sqlite3DbMallocSize(pMem->db,pMem->zMalloc)); if( pMem->szMalloc>0 && bPreserve && pMem->z==pMem->zMalloc ){ - pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n); + if( pMem->db ){ + pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n); + }else{ + pMem->zMalloc = sqlite3Realloc(pMem->z, n); + if( pMem->zMalloc==0 ) sqlite3_free(pMem->z); + pMem->z = pMem->zMalloc; + } bPreserve = 0; }else{ if( pMem->szMalloc>0 ) sqlite3DbFreeNN(pMem->db, pMem->zMalloc); @@ -73217,34 +81980,74 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPre ** ** Any prior string or blob content in the pMem object may be discarded. ** The pMem->xDel destructor is called, if it exists. Though MEM_Str -** and MEM_Blob values may be discarded, MEM_Int, MEM_Real, and MEM_Null -** values are preserved. +** and MEM_Blob values may be discarded, MEM_Int, MEM_Real, MEM_IntReal, +** and MEM_Null values are preserved. ** ** Return SQLITE_OK on success or an error code (probably SQLITE_NOMEM) ** if unable to complete the resizing. */ SQLITE_PRIVATE int sqlite3VdbeMemClearAndResize(Mem *pMem, int szNew){ - assert( szNew>0 ); + assert( CORRUPT_DB || szNew>0 ); assert( (pMem->flags & MEM_Dyn)==0 || pMem->szMalloc==0 ); if( pMem->szMallocflags & MEM_Dyn)==0 ); pMem->z = pMem->zMalloc; - pMem->flags &= (MEM_Null|MEM_Int|MEM_Real); + pMem->flags &= (MEM_Null|MEM_Int|MEM_Real|MEM_IntReal); return SQLITE_OK; } +/* +** If pMem is already a string, detect if it is a zero-terminated +** string, or make it into one if possible, and mark it as such. +** +** This is an optimization. Correct operation continues even if +** this routine is a no-op. +*/ +SQLITE_PRIVATE void sqlite3VdbeMemZeroTerminateIfAble(Mem *pMem){ + if( (pMem->flags & (MEM_Str|MEM_Term|MEM_Ephem|MEM_Static))!=MEM_Str ){ + /* pMem must be a string, and it cannot be an ephemeral or static string */ + return; + } + if( pMem->enc!=SQLITE_UTF8 ) return; + if( NEVER(pMem->z==0) ) return; + if( pMem->flags & MEM_Dyn ){ + if( pMem->xDel==sqlite3_free + && sqlite3_msize(pMem->z) >= (u64)(pMem->n+1) + ){ + pMem->z[pMem->n] = 0; + pMem->flags |= MEM_Term; + return; + } + if( pMem->xDel==(void(*)(void*))sqlite3RCStrUnref ){ + /* Blindly assume that all RCStr objects are zero-terminated */ + pMem->flags |= MEM_Term; + return; + } + }else if( pMem->szMalloc >= pMem->n+1 ){ + pMem->z[pMem->n] = 0; + pMem->flags |= MEM_Term; + return; + } +} + /* ** It is already known that pMem contains an unterminated string. ** Add the zero terminator. +** +** Three bytes of zero are added. In this way, there is guaranteed +** to be a double-zero byte at an even byte boundary in order to +** terminate a UTF16 string, even if the initial size of the buffer +** is an odd number of bytes. */ static SQLITE_NOINLINE int vdbeMemAddTerminator(Mem *pMem){ - if( sqlite3VdbeMemGrow(pMem, pMem->n+2, 1) ){ + if( sqlite3VdbeMemGrow(pMem, pMem->n+3, 1) ){ return SQLITE_NOMEM_BKPT; } pMem->z[pMem->n] = 0; pMem->z[pMem->n+1] = 0; + pMem->z[pMem->n+2] = 0; pMem->flags |= MEM_Term; return SQLITE_OK; } @@ -73256,8 +82059,9 @@ static SQLITE_NOINLINE int vdbeMemAddTerminator(Mem *pMem){ ** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. */ SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem *pMem){ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - assert( (pMem->flags&MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); if( (pMem->flags & (MEM_Str|MEM_Blob))!=0 ){ if( ExpandBlob(pMem) ) return SQLITE_NOMEM; if( pMem->szMalloc==0 || pMem->z!=pMem->zMalloc ){ @@ -73280,19 +82084,24 @@ SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem *pMem){ #ifndef SQLITE_OMIT_INCRBLOB SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *pMem){ int nByte; + assert( pMem!=0 ); assert( pMem->flags & MEM_Zero ); - assert( pMem->flags&MEM_Blob ); - assert( (pMem->flags&MEM_RowSet)==0 ); + assert( (pMem->flags&MEM_Blob)!=0 || MemNullNochng(pMem) ); + testcase( sqlite3_value_nochange(pMem) ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); /* Set nByte to the number of bytes required to store the expanded blob. */ nByte = pMem->n + pMem->u.nZero; if( nByte<=0 ){ + if( (pMem->flags & MEM_Blob)==0 ) return SQLITE_OK; nByte = 1; } if( sqlite3VdbeMemGrow(pMem, nByte, 1) ){ return SQLITE_NOMEM_BKPT; } + assert( pMem->z!=0 ); + assert( sqlite3DbMallocSize(pMem->db,pMem->z) >= nByte ); memset(&pMem->z[pMem->n], 0, pMem->u.nZero); pMem->n += pMem->u.nZero; @@ -73305,6 +82114,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *pMem){ ** Make sure the given Mem is \u0000 terminated. */ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); testcase( (pMem->flags & (MEM_Term|MEM_Str))==(MEM_Term|MEM_Str) ); testcase( (pMem->flags & (MEM_Term|MEM_Str))==0 ); @@ -73316,12 +82126,12 @@ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ } /* -** Add MEM_Str to the set of representations for the given Mem. Numbers -** are converted using sqlite3_snprintf(). Converting a BLOB to a string -** is a no-op. +** Add MEM_Str to the set of representations for the given Mem. This +** routine is only called if pMem is a number of some kind, not a NULL +** or a BLOB. ** -** Existing representations MEM_Int and MEM_Real are invalidated if -** bForce is true but are retained if bForce is false. +** Existing representations MEM_Int, MEM_Real, or MEM_IntReal are invalidated +** if bForce is true but are retained if bForce is false. ** ** A MEM_Null value will never be passed to this function. This function is ** used for converting values to text for returning to the user (i.e. via @@ -73330,14 +82140,14 @@ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ ** user and the latter is an internal programming error. */ SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, u8 enc, u8 bForce){ - int fg = pMem->flags; const int nByte = 32; + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - assert( !(fg&MEM_Zero) ); - assert( !(fg&(MEM_Str|MEM_Blob)) ); - assert( fg&(MEM_Int|MEM_Real) ); - assert( (pMem->flags&MEM_RowSet)==0 ); + assert( !(pMem->flags&MEM_Zero) ); + assert( !(pMem->flags&(MEM_Str|MEM_Blob)) ); + assert( pMem->flags&(MEM_Int|MEM_Real|MEM_IntReal) ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); @@ -73346,22 +82156,12 @@ SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, u8 enc, u8 bForce){ return SQLITE_NOMEM_BKPT; } - /* For a Real or Integer, use sqlite3_snprintf() to produce the UTF-8 - ** string representation of the value. Then, if the required encoding - ** is UTF-16le or UTF-16be do a translation. - ** - ** FIX ME: It would be better if sqlite3_snprintf() could do UTF-16. - */ - if( fg & MEM_Int ){ - sqlite3_snprintf(nByte, pMem->z, "%lld", pMem->u.i); - }else{ - assert( fg & MEM_Real ); - sqlite3_snprintf(nByte, pMem->z, "%!.15g", pMem->u.r); - } - pMem->n = sqlite3Strlen30(pMem->z); + vdbeMemRenderNum(nByte, pMem->z, pMem); + assert( pMem->z!=0 ); + assert( pMem->n==(int)sqlite3Strlen30NN(pMem->z) ); pMem->enc = SQLITE_UTF8; pMem->flags |= MEM_Str|MEM_Term; - if( bForce ) pMem->flags &= ~(MEM_Int|MEM_Real); + if( bForce ) pMem->flags &= ~(MEM_Int|MEM_Real|MEM_IntReal); sqlite3VdbeChangeEncoding(pMem, enc); return SQLITE_OK; } @@ -73378,9 +82178,11 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){ sqlite3_context ctx; Mem t; assert( pFunc!=0 ); + assert( pMem!=0 ); + assert( pMem->db!=0 ); assert( pFunc->xFinalize!=0 ); assert( (pMem->flags & MEM_Null)!=0 || pFunc==pMem->u.pDef ); - assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); + assert( sqlite3_mutex_held(pMem->db->mutex) ); memset(&ctx, 0, sizeof(ctx)); memset(&t, 0, sizeof(t)); t.flags = MEM_Null; @@ -73388,6 +82190,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){ ctx.pOut = &t; ctx.pMem = pMem; ctx.pFunc = pFunc; + ctx.enc = ENC(t.db); pFunc->xFinalize(&ctx); /* IMP: R-24505-23230 */ assert( (pMem->flags & MEM_Dyn)==0 ); if( pMem->szMalloc>0 ) sqlite3DbFreeNN(pMem->db, pMem->zMalloc); @@ -73395,6 +82198,33 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){ return ctx.isError; } +/* +** Memory cell pAccum contains the context of an aggregate function. +** This routine calls the xValue method for that function and stores +** the results in memory cell pMem. +** +** SQLITE_ERROR is returned if xValue() reports an error. SQLITE_OK +** otherwise. +*/ +#ifndef SQLITE_OMIT_WINDOWFUNC +SQLITE_PRIVATE int sqlite3VdbeMemAggValue(Mem *pAccum, Mem *pOut, FuncDef *pFunc){ + sqlite3_context ctx; + assert( pFunc!=0 ); + assert( pFunc->xValue!=0 ); + assert( (pAccum->flags & MEM_Null)!=0 || pFunc==pAccum->u.pDef ); + assert( pAccum->db!=0 ); + assert( sqlite3_mutex_held(pAccum->db->mutex) ); + memset(&ctx, 0, sizeof(ctx)); + sqlite3VdbeMemSetNull(pOut); + ctx.pOut = pOut; + ctx.pMem = pAccum; + ctx.pFunc = pFunc; + ctx.enc = ENC(pAccum->db); + pFunc->xValue(&ctx); + return ctx.isError; +} +#endif /* SQLITE_OMIT_WINDOWFUNC */ + /* ** If the memory cell contains a value that must be freed by ** invoking the external callback in Mem.xDel, then this routine @@ -73413,15 +82243,8 @@ static SQLITE_NOINLINE void vdbeMemClearExternAndSetNull(Mem *p){ testcase( p->flags & MEM_Dyn ); } if( p->flags&MEM_Dyn ){ - assert( (p->flags&MEM_RowSet)==0 ); assert( p->xDel!=SQLITE_DYNAMIC && p->xDel!=0 ); p->xDel((void *)p->z); - }else if( p->flags&MEM_RowSet ){ - sqlite3RowSetClear(p->u.pRowSet); - }else if( p->flags&MEM_Frame ){ - VdbeFrame *pFrame = p->u.pFrame; - pFrame->pParent = pFrame->v->pDelFrame; - pFrame->v->pDelFrame = pFrame; } p->flags = MEM_Null; } @@ -73462,34 +82285,12 @@ SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){ } } -/* -** Convert a 64-bit IEEE double into a 64-bit signed integer. -** If the double is out of range of a 64-bit signed integer then -** return the closest available 64-bit signed integer. +/* Like sqlite3VdbeMemRelease() but faster for cases where we +** know in advance that the Mem is not MEM_Dyn or MEM_Agg. */ -static SQLITE_NOINLINE i64 doubleToInt64(double r){ -#ifdef SQLITE_OMIT_FLOATING_POINT - /* When floating-point is omitted, double and int64 are the same thing */ - return r; -#else - /* - ** Many compilers we encounter do not define constants for the - ** minimum and maximum 64-bit integers, or they define them - ** inconsistently. And many do not understand the "LL" notation. - ** So we define our own static constants here using nothing - ** larger than a 32-bit integer constant. - */ - static const i64 maxInt = LARGEST_INT64; - static const i64 minInt = SMALLEST_INT64; - - if( r<=(double)minInt ){ - return minInt; - }else if( r>=(double)maxInt ){ - return maxInt; - }else{ - return (i64)r; - } -#endif +SQLITE_PRIVATE void sqlite3VdbeMemReleaseMalloc(Mem *p){ + assert( !VdbeMemDynamic(p) ); + if( p->szMalloc ) vdbeMemClear(p); } /* @@ -73503,22 +82304,23 @@ static SQLITE_NOINLINE i64 doubleToInt64(double r){ ** ** If pMem represents a string value, its encoding might be changed. */ -static SQLITE_NOINLINE i64 memIntValue(Mem *pMem){ +static SQLITE_NOINLINE i64 memIntValue(const Mem *pMem){ i64 value = 0; sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc); return value; } -SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem *pMem){ +SQLITE_PRIVATE i64 sqlite3VdbeIntValue(const Mem *pMem){ int flags; + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); flags = pMem->flags; - if( flags & MEM_Int ){ + if( flags & (MEM_Int|MEM_IntReal) ){ + testcase( flags & MEM_IntReal ); return pMem->u.i; }else if( flags & MEM_Real ){ - return doubleToInt64(pMem->u.r); - }else if( flags & (MEM_Str|MEM_Blob) ){ - assert( pMem->z || pMem->n==0 ); + return sqlite3RealToI64(pMem->u.r); + }else if( (flags & (MEM_Str|MEM_Blob))!=0 && pMem->z!=0 ){ return memIntValue(pMem); }else{ return 0; @@ -73538,11 +82340,13 @@ static SQLITE_NOINLINE double memRealValue(Mem *pMem){ return val; } SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem *pMem){ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); if( pMem->flags & MEM_Real ){ return pMem->u.r; - }else if( pMem->flags & MEM_Int ){ + }else if( pMem->flags & (MEM_Int|MEM_IntReal) ){ + testcase( pMem->flags & MEM_IntReal ); return (double)pMem->u.i; }else if( pMem->flags & (MEM_Str|MEM_Blob) ){ return memRealValue(pMem); @@ -73554,40 +82358,45 @@ SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem *pMem){ /* ** Return 1 if pMem represents true, and return 0 if pMem represents false. -** Return the value ifNull if pMem is NULL. +** Return the value ifNull if pMem is NULL. */ SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem *pMem, int ifNull){ - if( pMem->flags & MEM_Int ) return pMem->u.i!=0; + testcase( pMem->flags & MEM_IntReal ); + if( pMem->flags & (MEM_Int|MEM_IntReal) ) return pMem->u.i!=0; if( pMem->flags & MEM_Null ) return ifNull; return sqlite3VdbeRealValue(pMem)!=0.0; } /* -** The MEM structure is already a MEM_Real. Try to also make it a -** MEM_Int if we can. +** The MEM structure is already a MEM_Real or MEM_IntReal. Try to +** make it a MEM_Int if we can. */ SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem *pMem){ - i64 ix; - assert( pMem->flags & MEM_Real ); - assert( (pMem->flags & MEM_RowSet)==0 ); + assert( pMem!=0 ); + assert( pMem->flags & (MEM_Real|MEM_IntReal) ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); - ix = doubleToInt64(pMem->u.r); - - /* Only mark the value as an integer if - ** - ** (1) the round-trip conversion real->int->real is a no-op, and - ** (2) The integer is neither the largest nor the smallest - ** possible integer (ticket #3922) - ** - ** The second and third terms in the following conditional enforces - ** the second condition under the assumption that addition overflow causes - ** values to wrap around. - */ - if( pMem->u.r==ix && ix>SMALLEST_INT64 && ixu.i = ix; + if( pMem->flags & MEM_IntReal ){ MemSetTypeFlag(pMem, MEM_Int); + }else{ + i64 ix = sqlite3RealToI64(pMem->u.r); + + /* Only mark the value as an integer if + ** + ** (1) the round-trip conversion real->int->real is a no-op, and + ** (2) The integer is neither the largest nor the smallest + ** possible integer (ticket #3922) + ** + ** The second and third terms in the following conditional enforces + ** the second condition under the assumption that addition overflow causes + ** values to wrap around. + */ + if( pMem->u.r==ix && ix>SMALLEST_INT64 && ixu.i = ix; + MemSetTypeFlag(pMem, MEM_Int); + } } } @@ -73595,8 +82404,9 @@ SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem *pMem){ ** Convert pMem to type integer. Invalidate any prior representations. */ SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem *pMem){ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - assert( (pMem->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); pMem->u.i = sqlite3VdbeIntValue(pMem); @@ -73609,6 +82419,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem *pMem){ ** Invalidate any prior representations. */ SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem *pMem){ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); @@ -73620,17 +82431,31 @@ SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem *pMem){ /* Compare a floating point value to an integer. Return true if the two ** values are the same within the precision of the floating point value. ** +** This function assumes that i was obtained by assignment from r1. +** ** For some versions of GCC on 32-bit machines, if you do the more obvious ** comparison of "r1==(double)i" you sometimes get an answer of false even ** though the r1 and (double)i values are bit-for-bit the same. */ -static int sqlite3RealSameAsInt(double r1, sqlite3_int64 i){ +SQLITE_PRIVATE int sqlite3RealSameAsInt(double r1, sqlite3_int64 i){ double r2 = (double)i; - return memcmp(&r1, &r2, sizeof(r1))==0; + return r1==0.0 + || (memcmp(&r1, &r2, sizeof(r1))==0 + && i >= -2251799813685248LL && i < 2251799813685248LL); +} + +/* Convert a floating point value to its closest integer. Do so in +** a way that avoids 'outside the range of representable values' warnings +** from UBSAN. +*/ +SQLITE_PRIVATE i64 sqlite3RealToI64(double r){ + if( r<-9223372036854774784.0 ) return SMALLEST_INT64; + if( r>+9223372036854774784.0 ) return LARGEST_INT64; + return (i64)r; } /* -** Convert pMem so that it has types MEM_Real or MEM_Int or both. +** Convert pMem so that it has type MEM_Real or MEM_Int. ** Invalidate any prior representations. ** ** Every effort is made to force the conversion, even if the input @@ -73638,25 +82463,27 @@ static int sqlite3RealSameAsInt(double r1, sqlite3_int64 i){ ** as much of the string as we can and ignore the rest. */ SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem *pMem){ - if( (pMem->flags & (MEM_Int|MEM_Real|MEM_Null))==0 ){ + assert( pMem!=0 ); + testcase( pMem->flags & MEM_Int ); + testcase( pMem->flags & MEM_Real ); + testcase( pMem->flags & MEM_IntReal ); + testcase( pMem->flags & MEM_Null ); + if( (pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null))==0 ){ int rc; + sqlite3_int64 ix; assert( (pMem->flags & (MEM_Blob|MEM_Str))!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - rc = sqlite3Atoi64(pMem->z, &pMem->u.i, pMem->n, pMem->enc); - if( rc==0 ){ + rc = sqlite3AtoF(pMem->z, &pMem->u.r, pMem->n, pMem->enc); + if( ((rc==0 || rc==1) && sqlite3Atoi64(pMem->z, &ix, pMem->n, pMem->enc)<=1) + || sqlite3RealSameAsInt(pMem->u.r, (ix = sqlite3RealToI64(pMem->u.r))) + ){ + pMem->u.i = ix; MemSetTypeFlag(pMem, MEM_Int); }else{ - i64 i = pMem->u.i; - sqlite3AtoF(pMem->z, &pMem->u.r, pMem->n, pMem->enc); - if( rc==1 && sqlite3RealSameAsInt(pMem->u.r, i) ){ - pMem->u.i = i; - MemSetTypeFlag(pMem, MEM_Int); - }else{ - MemSetTypeFlag(pMem, MEM_Real); - } + MemSetTypeFlag(pMem, MEM_Real); } } - assert( (pMem->flags & (MEM_Int|MEM_Real|MEM_Null))!=0 ); + assert( (pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null))!=0 ); pMem->flags &= ~(MEM_Str|MEM_Blob|MEM_Zero); return SQLITE_OK; } @@ -73668,8 +82495,8 @@ SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem *pMem){ ** affinity even if that results in loss of data. This routine is ** used (for example) to implement the SQL "cast()" operator. */ -SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){ - if( pMem->flags & MEM_Null ) return; +SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){ + if( pMem->flags & MEM_Null ) return SQLITE_OK; switch( aff ){ case SQLITE_AFF_BLOB: { /* Really a cast to BLOB */ if( (pMem->flags & MEM_Blob)==0 ){ @@ -73694,15 +82521,20 @@ SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){ break; } default: { + int rc; assert( aff==SQLITE_AFF_TEXT ); assert( MEM_Str==(MEM_Blob>>3) ); pMem->flags |= (pMem->flags&MEM_Blob)>>3; sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding); assert( pMem->flags & MEM_Str || pMem->db->mallocFailed ); - pMem->flags &= ~(MEM_Int|MEM_Real|MEM_Blob|MEM_Zero); - break; + pMem->flags &= ~(MEM_Int|MEM_Real|MEM_IntReal|MEM_Blob|MEM_Zero); + if( encoding!=SQLITE_UTF8 ) pMem->n &= ~1; + rc = sqlite3VdbeChangeEncoding(pMem, encoding); + if( rc ) return rc; + sqlite3VdbeMemZeroTerminateIfAble(pMem); } } + return SQLITE_OK; } /* @@ -73738,13 +82570,14 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem *pMem){ } } SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value *p){ - sqlite3VdbeMemSetNull((Mem*)p); + sqlite3VdbeMemSetNull((Mem*)p); } /* ** Delete any previous value and set the value to be a BLOB of length ** n containing all zeros. */ +#ifndef SQLITE_OMIT_INCRBLOB SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem *pMem, int n){ sqlite3VdbeMemRelease(pMem); pMem->flags = MEM_Blob|MEM_Zero; @@ -73754,6 +82587,21 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem *pMem, int n){ pMem->enc = SQLITE_UTF8; pMem->z = 0; } +#else +SQLITE_PRIVATE int sqlite3VdbeMemSetZeroBlob(Mem *pMem, int n){ + int nByte = n>0?n:1; + if( sqlite3VdbeMemGrow(pMem, nByte, 0) ){ + return SQLITE_NOMEM_BKPT; + } + assert( pMem->z!=0 ); + assert( sqlite3DbMallocSize(pMem->db, pMem->z)>=nByte ); + memset(pMem->z, 0, nByte); + pMem->n = n>0?n:0; + pMem->flags = MEM_Blob; + pMem->enc = SQLITE_UTF8; + return SQLITE_OK; +} +#endif /* ** The pMem is known to contain content that needs to be destroyed prior @@ -73793,6 +82641,7 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetPointer( void (*xDestructor)(void*) ){ assert( pMem->flags==MEM_Null ); + vdbeMemClear(pMem); pMem->u.zPType = zPType ? zPType : ""; pMem->z = pPtr; pMem->flags = MEM_Null|MEM_Dyn|MEM_Subtype|MEM_Term; @@ -73814,26 +82663,36 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetDouble(Mem *pMem, double val){ } #endif +#ifdef SQLITE_DEBUG +/* +** Return true if the Mem holds a RowSet object. This routine is intended +** for use inside of assert() statements. +*/ +SQLITE_PRIVATE int sqlite3VdbeMemIsRowSet(const Mem *pMem){ + return (pMem->flags&(MEM_Blob|MEM_Dyn))==(MEM_Blob|MEM_Dyn) + && pMem->xDel==sqlite3RowSetDelete; +} +#endif + /* ** Delete any previous value and set the value of pMem to be an ** empty boolean index. +** +** Return SQLITE_OK on success and SQLITE_NOMEM if a memory allocation +** error occurs. */ -SQLITE_PRIVATE void sqlite3VdbeMemSetRowSet(Mem *pMem){ +SQLITE_PRIVATE int sqlite3VdbeMemSetRowSet(Mem *pMem){ sqlite3 *db = pMem->db; + RowSet *p; assert( db!=0 ); - assert( (pMem->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); sqlite3VdbeMemRelease(pMem); - pMem->zMalloc = sqlite3DbMallocRawNN(db, 64); - if( db->mallocFailed ){ - pMem->flags = MEM_Null; - pMem->szMalloc = 0; - }else{ - assert( pMem->zMalloc ); - pMem->szMalloc = sqlite3DbMallocSize(db, pMem->zMalloc); - pMem->u.pRowSet = sqlite3RowSetInit(db, pMem->zMalloc, pMem->szMalloc); - assert( pMem->u.pRowSet!=0 ); - pMem->flags = MEM_RowSet; - } + p = sqlite3RowSetInit(db); + if( p==0 ) return SQLITE_NOMEM; + pMem->z = (char*)p; + pMem->flags = MEM_Blob|MEM_Dyn; + pMem->xDel = sqlite3RowSetDelete; + return SQLITE_OK; } /* @@ -73849,7 +82708,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){ } return n>p->db->aLimit[SQLITE_LIMIT_LENGTH]; } - return 0; + return 0; } #ifdef SQLITE_DEBUG @@ -73858,15 +82717,31 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){ ** its link to a shallow copy and by marking any current shallow ** copies of this cell as invalid. ** -** This is used for testing and debugging only - to make sure shallow -** copies are not misused. +** This is used for testing and debugging only - to help ensure that shallow +** copies (created by OP_SCopy) are not misused. */ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){ int i; Mem *pX; - for(i=0, pX=pVdbe->aMem; inMem; i++, pX++){ + for(i=1, pX=pVdbe->aMem+1; inMem; i++, pX++){ if( pX->pScopyFrom==pMem ){ - pX->flags |= MEM_Undefined; + u16 mFlags; + if( pVdbe->db->flags & SQLITE_VdbeTrace ){ + sqlite3DebugPrintf("Invalidate R[%d] due to change in R[%d]\n", + (int)(pX - pVdbe->aMem), (int)(pMem - pVdbe->aMem)); + } + /* If pX is marked as a shallow copy of pMem, then try to verify that + ** no significant changes have been made to pX since the OP_SCopy. + ** A significant change would indicated a missed call to this + ** function for pX. Minor changes, such as adding or removing a + ** dual type, are allowed, as long as the underlying value is the + ** same. */ + mFlags = pMem->flags & pX->flags & pX->mScopyFlags; + assert( (mFlags&(MEM_Int|MEM_IntReal))==0 || pMem->u.i==pX->u.i ); + + /* pMem is the register that is changing. But also mark pX as + ** undefined so that we can quickly detect the shallow-copy error */ + pX->flags = MEM_Undefined; pX->pScopyFrom = 0; } } @@ -73874,7 +82749,6 @@ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){ } #endif /* SQLITE_DEBUG */ - /* ** Make an shallow copy of pFrom into pTo. Prior contents of ** pTo are freed. The pFrom->z field is not duplicated. If @@ -73887,7 +82761,7 @@ static SQLITE_NOINLINE void vdbeClrCopy(Mem *pTo, const Mem *pFrom, int eType){ sqlite3VdbeMemShallowCopy(pTo, pFrom, eType); } SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int srcType){ - assert( (pFrom->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pFrom) ); assert( pTo->db==pFrom->db ); if( VdbeMemDynamic(pTo) ){ vdbeClrCopy(pTo,pFrom,srcType); return; } memcpy(pTo, pFrom, MEMCELLSIZE); @@ -73905,7 +82779,7 @@ SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int sr SQLITE_PRIVATE int sqlite3VdbeMemCopy(Mem *pTo, const Mem *pFrom){ int rc = SQLITE_OK; - assert( (pFrom->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pFrom) ); if( VdbeMemDynamic(pTo) ) vdbeMemClearExternAndSetNull(pTo); memcpy(pTo, pFrom, MEMCELLSIZE); pTo->flags &= ~MEM_Dyn; @@ -73940,8 +82814,8 @@ SQLITE_PRIVATE void sqlite3VdbeMemMove(Mem *pTo, Mem *pFrom){ ** Change the value of a Mem to be a string or a BLOB. ** ** The memory management strategy depends on the value of the xDel -** parameter. If the value passed is SQLITE_TRANSIENT, then the -** string is copied into a (possibly existing) buffer managed by the +** parameter. If the value passed is SQLITE_TRANSIENT, then the +** string is copied into a (possibly existing) buffer managed by the ** Mem structure. Otherwise, any existing buffer is freed and the ** pointer copied. ** @@ -73950,20 +82824,29 @@ SQLITE_PRIVATE void sqlite3VdbeMemMove(Mem *pTo, Mem *pFrom){ ** stored without allocating memory, then it is. If a memory allocation ** is required to store the string, then value of pMem is unchanged. In ** either case, SQLITE_TOOBIG is returned. +** +** The "enc" parameter is the text encoding for the string, or zero +** to store a blob. +** +** If n is negative, then the string consists of all bytes up to but +** excluding the first zero character. The n parameter must be +** non-negative for blobs. */ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( Mem *pMem, /* Memory cell to set to string value */ const char *z, /* String pointer */ - int n, /* Bytes in string, or negative */ + i64 n, /* Bytes in string, or negative */ u8 enc, /* Encoding of z. 0 for BLOBs */ void (*xDel)(void*) /* Destructor function */ ){ - int nByte = n; /* New value for pMem->n */ + i64 nByte = n; /* New value for pMem->n */ int iLimit; /* Maximum allowed string or blob size */ - u16 flags = 0; /* New value for pMem->flags */ + u16 flags; /* New value for pMem->flags */ + assert( pMem!=0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - assert( (pMem->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); + assert( enc!=0 || n>=0 ); /* If z is a NULL pointer, set pMem to contain an SQL NULL. */ if( !z ){ @@ -73976,16 +82859,30 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( }else{ iLimit = SQLITE_MAX_LENGTH; } - flags = (enc==0?MEM_Blob:MEM_Str); if( nByte<0 ){ assert( enc!=0 ); if( enc==SQLITE_UTF8 ){ - nByte = 0x7fffffff & (int)strlen(z); - if( nByte>iLimit ) nByte = iLimit+1; + nByte = strlen(z); }else{ for(nByte=0; nByte<=iLimit && (z[nByte] | z[nByte+1]); nByte+=2){} } - flags |= MEM_Term; + flags= MEM_Str|MEM_Term; + }else if( enc==0 ){ + flags = MEM_Blob; + enc = SQLITE_UTF8; + }else{ + flags = MEM_Str; + } + if( nByte>iLimit ){ + if( xDel && xDel!=SQLITE_TRANSIENT ){ + if( xDel==SQLITE_DYNAMIC ){ + sqlite3DbFree(pMem->db, (void*)z); + }else{ + xDel((void*)z); + } + } + sqlite3VdbeMemSetNull(pMem); + return sqlite3ErrorToParser(pMem->db, SQLITE_TOOBIG); } /* The following block sets the new values of Mem.z and Mem.xDel. It @@ -73993,44 +82890,39 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( ** management (one of MEM_Dyn or MEM_Static). */ if( xDel==SQLITE_TRANSIENT ){ - int nAlloc = nByte; + i64 nAlloc = nByte; if( flags&MEM_Term ){ nAlloc += (enc==SQLITE_UTF8?1:2); } - if( nByte>iLimit ){ - return SQLITE_TOOBIG; - } testcase( nAlloc==0 ); testcase( nAlloc==31 ); testcase( nAlloc==32 ); - if( sqlite3VdbeMemClearAndResize(pMem, MAX(nAlloc,32)) ){ + if( sqlite3VdbeMemClearAndResize(pMem, (int)MAX(nAlloc,32)) ){ return SQLITE_NOMEM_BKPT; } memcpy(pMem->z, z, nAlloc); - }else if( xDel==SQLITE_DYNAMIC ){ - sqlite3VdbeMemRelease(pMem); - pMem->zMalloc = pMem->z = (char *)z; - pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->zMalloc); }else{ sqlite3VdbeMemRelease(pMem); pMem->z = (char *)z; - pMem->xDel = xDel; - flags |= ((xDel==SQLITE_STATIC)?MEM_Static:MEM_Dyn); + if( xDel==SQLITE_DYNAMIC ){ + pMem->zMalloc = pMem->z; + pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->zMalloc); + }else{ + pMem->xDel = xDel; + flags |= ((xDel==SQLITE_STATIC)?MEM_Static:MEM_Dyn); + } } - pMem->n = nByte; + pMem->n = (int)(nByte & 0x7fffffff); pMem->flags = flags; - pMem->enc = (enc==0 ? SQLITE_UTF8 : enc); + pMem->enc = enc; #ifndef SQLITE_OMIT_UTF16 - if( pMem->enc!=SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){ + if( enc>SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){ return SQLITE_NOMEM_BKPT; } #endif - if( nByte>iLimit ){ - return SQLITE_TOOBIG; - } return SQLITE_OK; } @@ -74050,7 +82942,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( ** If this routine fails for any reason (malloc returns NULL or unable ** to read from the disk) then the pMem is left in an inconsistent state. */ -static SQLITE_NOINLINE int vdbeMemFromBtreeResize( +SQLITE_PRIVATE int sqlite3VdbeMemFromBtree( BtCursor *pCur, /* Cursor pointing at record to retrieve. */ u32 offset, /* Offset from the start of data to return bytes from. */ u32 amt, /* Number of bytes to return. */ @@ -74058,6 +82950,9 @@ static SQLITE_NOINLINE int vdbeMemFromBtreeResize( ){ int rc; pMem->flags = MEM_Null; + if( sqlite3BtreeMaxRecordSize(pCur)z); if( rc==SQLITE_OK ){ @@ -74070,31 +82965,28 @@ static SQLITE_NOINLINE int vdbeMemFromBtreeResize( } return rc; } -SQLITE_PRIVATE int sqlite3VdbeMemFromBtree( +SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset( BtCursor *pCur, /* Cursor pointing at record to retrieve. */ - u32 offset, /* Offset from the start of data to return bytes from. */ u32 amt, /* Number of bytes to return. */ Mem *pMem /* OUT: Return data in this Mem structure. */ ){ - char *zData; /* Data from the btree layer */ u32 available = 0; /* Number of bytes available on the local btree page */ int rc = SQLITE_OK; /* Return code */ assert( sqlite3BtreeCursorIsValid(pCur) ); assert( !VdbeMemDynamic(pMem) ); - /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert() + /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert() ** that both the BtShared and database handle mutexes are held. */ - assert( (pMem->flags & MEM_RowSet)==0 ); - zData = (char *)sqlite3BtreePayloadFetch(pCur, &available); - assert( zData!=0 ); + assert( !sqlite3VdbeMemIsRowSet(pMem) ); + pMem->z = (char *)sqlite3BtreePayloadFetch(pCur, &available); + assert( pMem->z!=0 ); - if( offset+amt<=available ){ - pMem->z = &zData[offset]; + if( amt<=available ){ pMem->flags = MEM_Blob|MEM_Ephem; pMem->n = (int)amt; }else{ - rc = vdbeMemFromBtreeResize(pCur, offset, amt, pMem); + rc = sqlite3VdbeMemFromBtree(pCur, 0, amt, pMem); } return rc; @@ -74109,7 +83001,7 @@ static SQLITE_NOINLINE const void *valueToText(sqlite3_value* pVal, u8 enc){ assert( pVal!=0 ); assert( pVal->db==0 || sqlite3_mutex_held(pVal->db->mutex) ); assert( (enc&3)==(enc&~SQLITE_UTF16_ALIGNED) ); - assert( (pVal->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pVal) ); assert( (pVal->flags & (MEM_Null))==0 ); if( pVal->flags & (MEM_Blob|MEM_Str) ){ if( ExpandBlob(pVal) ) return 0; @@ -74131,7 +83023,7 @@ static SQLITE_NOINLINE const void *valueToText(sqlite3_value* pVal, u8 enc){ assert(pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) || pVal->db==0 || pVal->db->mallocFailed ); if( pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) ){ - assert( sqlite3VdbeMemConsistentDualRep(pVal) ); + assert( sqlite3VdbeMemValidStrRep(pVal) ); return pVal->z; }else{ return 0; @@ -74152,9 +83044,9 @@ SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value* pVal, u8 enc){ if( !pVal ) return 0; assert( pVal->db==0 || sqlite3_mutex_held(pVal->db->mutex) ); assert( (enc&3)==(enc&~SQLITE_UTF16_ALIGNED) ); - assert( (pVal->flags & MEM_RowSet)==0 ); + assert( !sqlite3VdbeMemIsRowSet(pVal) ); if( (pVal->flags&(MEM_Str|MEM_Term))==(MEM_Str|MEM_Term) && pVal->enc==enc ){ - assert( sqlite3VdbeMemConsistentDualRep(pVal) ); + assert( sqlite3VdbeMemValidStrRep(pVal) ); return pVal->z; } if( pVal->flags&MEM_Null ){ @@ -74163,6 +83055,24 @@ SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value* pVal, u8 enc){ return valueToText(pVal, enc); } +/* Return true if sqlit3_value object pVal is a string or blob value +** that uses the destructor specified in the second argument. +** +** TODO: Maybe someday promote this interface into a published API so +** that third-party extensions can get access to it? +*/ +SQLITE_PRIVATE int sqlite3ValueIsOfClass(const sqlite3_value *pVal, void(*xFree)(void*)){ + if( ALWAYS(pVal!=0) + && ALWAYS((pVal->flags & (MEM_Str|MEM_Blob))!=0) + && (pVal->flags & MEM_Dyn)!=0 + && pVal->xDel==xFree + ){ + return 1; + }else{ + return 0; + } +} + /* ** Create a new sqlite3_value object. */ @@ -74176,7 +83086,7 @@ SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *db){ } /* -** Context object passed by sqlite3Stat4ProbeSetValue() through to +** Context object passed by sqlite3Stat4ProbeSetValue() through to ** valueNew(). See comments above valueNew() for details. */ struct ValueNewStat4Ctx { @@ -74191,14 +83101,14 @@ struct ValueNewStat4Ctx { ** the second argument to this function is NULL, the object is allocated ** by calling sqlite3ValueNew(). ** -** Otherwise, if the second argument is non-zero, then this function is +** Otherwise, if the second argument is non-zero, then this function is ** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not -** already been allocated, allocate the UnpackedRecord structure that +** already been allocated, allocate the UnpackedRecord structure that ** that function will return to its caller here. Then return a pointer to ** an sqlite3_value within the UnpackedRecord.a[] array. */ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 if( p ){ UnpackedRecord *pRec = p->ppRec[0]; @@ -74207,7 +83117,7 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ int nByte; /* Bytes of space to allocate */ int i; /* Counter variable */ int nCol = pIdx->nColumn; /* Number of index columns including rowid */ - + nByte = sizeof(Mem) * nCol + ROUND8(sizeof(UnpackedRecord)); pRec = (UnpackedRecord*)sqlite3DbMallocZero(db, nByte); if( pRec ){ @@ -74228,13 +83138,14 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ if( pRec==0 ) return 0; p->ppRec[0] = pRec; } - + pRec->nField = p->iVal+1; + sqlite3VdbeMemSetNull(&pRec->aMem[p->iVal]); return &pRec->aMem[p->iVal]; } #else UNUSED_PARAMETER(p); -#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */ +#endif /* defined(SQLITE_ENABLE_STAT4) */ return sqlite3ValueNew(db); } @@ -74247,21 +83158,21 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ ** * the SQLITE_FUNC_NEEDCOLL function flag is not set, ** ** then this routine attempts to invoke the SQL function. Assuming no -** error occurs, output parameter (*ppVal) is set to point to a value +** error occurs, output parameter (*ppVal) is set to point to a value ** object containing the result before returning SQLITE_OK. ** ** Affinity aff is applied to the result of the function before returning. -** If the result is a text value, the sqlite3_value object uses encoding +** If the result is a text value, the sqlite3_value object uses encoding ** enc. ** ** If the conditions above are not met, this function returns SQLITE_OK ** and sets (*ppVal) to NULL. Or, if an error occurs, (*ppVal) is set to ** NULL and an SQLite error code returned. */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 static int valueFromFunction( sqlite3 *db, /* The database connection */ - Expr *p, /* The expression to evaluate */ + const Expr *p, /* The expression to evaluate */ u8 enc, /* Encoding to use */ u8 aff, /* Affinity to use */ sqlite3_value **ppVal, /* Write the new value here */ @@ -74278,11 +83189,16 @@ static int valueFromFunction( assert( pCtx!=0 ); assert( (p->flags & EP_TokenOnly)==0 ); + assert( ExprUseXList(p) ); pList = p->x.pList; if( pList ) nVal = pList->nExpr; + assert( !ExprHasProperty(p, EP_IntValue) ); pFunc = sqlite3FindFunction(db, p->u.zToken, nVal, enc, 0); +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + if( pFunc==0 ) return SQLITE_OK; +#endif assert( pFunc ); - if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0 + if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0 || (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL) ){ return SQLITE_OK; @@ -74306,10 +83222,10 @@ static int valueFromFunction( goto value_from_function_out; } - assert( pCtx->pParse->rc==SQLITE_OK ); memset(&ctx, 0, sizeof(ctx)); ctx.pOut = pVal; ctx.pFunc = pFunc; + ctx.enc = ENC(db); pFunc->xSFunc(&ctx, nVal, apVal); if( ctx.isError ){ rc = ctx.isError; @@ -74318,16 +83234,16 @@ static int valueFromFunction( sqlite3ValueApplyAffinity(pVal, aff, SQLITE_UTF8); assert( rc==SQLITE_OK ); rc = sqlite3VdbeChangeEncoding(pVal, enc); - if( rc==SQLITE_OK && sqlite3VdbeMemTooBig(pVal) ){ + if( NEVER(rc==SQLITE_OK && sqlite3VdbeMemTooBig(pVal)) ){ rc = SQLITE_TOOBIG; pCtx->pParse->nErr++; } } - pCtx->pParse->rc = rc; value_from_function_out: if( rc!=SQLITE_OK ){ pVal = 0; + pCtx->pParse->rc = rc; } if( apVal ){ for(i=0; iop)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft; -#if defined(SQLITE_ENABLE_STAT3_OR_STAT4) if( op==TK_REGISTER ) op = pExpr->op2; -#else - if( NEVER(op==TK_REGISTER) ) op = pExpr->op2; -#endif /* Compressed expressions only appear when parsing the DEFAULT clause ** on a table column definition, and hence only when pCtx==0. This @@ -74383,12 +83295,21 @@ static int valueFromExpr( assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 ); if( op==TK_CAST ){ - u8 aff = sqlite3AffinityType(pExpr->u.zToken,0); + u8 aff; + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + aff = sqlite3AffinityType(pExpr->u.zToken,0); rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx); testcase( rc!=SQLITE_OK ); if( *ppVal ){ - sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8); - sqlite3ValueApplyAffinity(*ppVal, affinity, SQLITE_UTF8); +#ifdef SQLITE_ENABLE_STAT4 + rc = ExpandBlob(*ppVal); +#else + /* zero-blobs only come from functions, not literal values. And + ** functions are only processed under STAT4 */ + assert( (ppVal[0][0].flags & MEM_Zero)==0 ); +#endif + sqlite3VdbeMemCast(*ppVal, aff, enc); + sqlite3ValueApplyAffinity(*ppVal, affinity, enc); } return rc; } @@ -74419,20 +83340,29 @@ static int valueFromExpr( }else{ sqlite3ValueApplyAffinity(pVal, affinity, SQLITE_UTF8); } - if( pVal->flags & (MEM_Int|MEM_Real) ) pVal->flags &= ~MEM_Str; + assert( (pVal->flags & MEM_IntReal)==0 ); + if( pVal->flags & (MEM_Int|MEM_IntReal|MEM_Real) ){ + testcase( pVal->flags & MEM_Int ); + testcase( pVal->flags & MEM_Real ); + pVal->flags &= ~MEM_Str; + } if( enc!=SQLITE_UTF8 ){ rc = sqlite3VdbeChangeEncoding(pVal, enc); } }else if( op==TK_UMINUS ) { /* This branch happens for multiple negative signs. Ex: -(-5) */ - if( SQLITE_OK==valueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal,pCtx) + if( SQLITE_OK==valueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal,pCtx) && pVal!=0 ){ sqlite3VdbeMemNumerify(pVal); if( pVal->flags & MEM_Real ){ pVal->u.r = -pVal->u.r; }else if( pVal->u.i==SMALLEST_INT64 ){ +#ifndef SQLITE_OMIT_FLOATING_POINT pVal->u.r = -(double)SMALLEST_INT64; +#else + pVal->u.r = LARGEST_INT64; +#endif MemSetTypeFlag(pVal, MEM_Real); }else{ pVal->u.i = -pVal->u.i; @@ -74442,11 +83372,12 @@ static int valueFromExpr( }else if( op==TK_NULL ){ pVal = valueNew(db, pCtx); if( pVal==0 ) goto no_mem; - sqlite3VdbeMemNumerify(pVal); + sqlite3VdbeMemSetNull(pVal); } #ifndef SQLITE_OMIT_BLOB_LITERAL else if( op==TK_BLOB ){ int nVal; + assert( !ExprHasProperty(pExpr, EP_IntValue) ); assert( pExpr->u.zToken[0]=='x' || pExpr->u.zToken[0]=='X' ); assert( pExpr->u.zToken[1]=='\'' ); pVal = valueNew(db, pCtx); @@ -74458,28 +83389,31 @@ static int valueFromExpr( 0, SQLITE_DYNAMIC); } #endif -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 else if( op==TK_FUNCTION && pCtx!=0 ){ rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx); } #endif else if( op==TK_TRUEFALSE ){ - pVal = valueNew(db, pCtx); - pVal->flags = MEM_Int; - pVal->u.i = pExpr->u.zToken[4]==0; + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + pVal = valueNew(db, pCtx); + if( pVal ){ + pVal->flags = MEM_Int; + pVal->u.i = pExpr->u.zToken[4]==0; + } } *ppVal = pVal; return rc; no_mem: -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - if( pCtx==0 || pCtx->pParse->nErr==0 ) +#ifdef SQLITE_ENABLE_STAT4 + if( pCtx==0 || NEVER(pCtx->pParse->nErr==0) ) #endif sqlite3OomFault(db); sqlite3DbFree(db, zVal); assert( *ppVal==0 ); -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 if( pCtx==0 ) sqlite3ValueFree(pVal); #else assert( pCtx==0 ); sqlite3ValueFree(pVal); @@ -74499,7 +83433,7 @@ no_mem: */ SQLITE_PRIVATE int sqlite3ValueFromExpr( sqlite3 *db, /* The database connection */ - Expr *pExpr, /* The expression to evaluate */ + const Expr *pExpr, /* The expression to evaluate */ u8 enc, /* Encoding to use */ u8 affinity, /* Affinity to use */ sqlite3_value **ppVal /* Write the new value here */ @@ -74507,56 +83441,7 @@ SQLITE_PRIVATE int sqlite3ValueFromExpr( return pExpr ? valueFromExpr(db, pExpr, enc, affinity, ppVal, 0) : 0; } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -/* -** The implementation of the sqlite_record() function. This function accepts -** a single argument of any type. The return value is a formatted database -** record (a blob) containing the argument value. -** -** This is used to convert the value stored in the 'sample' column of the -** sqlite_stat3 table to the record format SQLite uses internally. -*/ -static void recordFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const int file_format = 1; - u32 iSerial; /* Serial type */ - int nSerial; /* Bytes of space for iSerial as varint */ - u32 nVal; /* Bytes of space required for argv[0] */ - int nRet; - sqlite3 *db; - u8 *aRet; - - UNUSED_PARAMETER( argc ); - iSerial = sqlite3VdbeSerialType(argv[0], file_format, &nVal); - nSerial = sqlite3VarintLen(iSerial); - db = sqlite3_context_db_handle(context); - - nRet = 1 + nSerial + nVal; - aRet = sqlite3DbMallocRawNN(db, nRet); - if( aRet==0 ){ - sqlite3_result_error_nomem(context); - }else{ - aRet[0] = nSerial+1; - putVarint32(&aRet[1], iSerial); - sqlite3VdbeSerialPut(&aRet[1+nSerial], argv[0], iSerial); - sqlite3_result_blob(context, aRet, nRet, SQLITE_TRANSIENT); - sqlite3DbFreeNN(db, aRet); - } -} - -/* -** Register built-in functions used to help read ANALYZE data. -*/ -SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void){ - static FuncDef aAnalyzeTableFuncs[] = { - FUNCTION(sqlite_record, 1, 0, 0, recordFunc), - }; - sqlite3InsertBuiltinFuncs(aAnalyzeTableFuncs, ArraySize(aAnalyzeTableFuncs)); -} - +#ifdef SQLITE_ENABLE_STAT4 /* ** Attempt to extract a value from pExpr and use it to construct *ppVal. ** @@ -74617,8 +83502,8 @@ static int stat4ValueFromExpr( } /* -** This function is used to allocate and populate UnpackedRecord -** structures intended to be compared against sample index keys stored +** This function is used to allocate and populate UnpackedRecord +** structures intended to be compared against sample index keys stored ** in the sqlite_stat4 table. ** ** A single call to this function populates zero or more fields of the @@ -74629,14 +83514,14 @@ static int stat4ValueFromExpr( ** ** * The expression is a bound variable, and this is a reprepare, or ** -** * The sqlite3ValueFromExpr() function is able to extract a value +** * The sqlite3ValueFromExpr() function is able to extract a value ** from the expression (i.e. the expression is a literal value). ** ** Or, if pExpr is a TK_VECTOR, one field is populated for each of the ** vector components that match either of the two latter criteria listed ** above. ** -** Before any value is appended to the record, the affinity of the +** Before any value is appended to the record, the affinity of the ** corresponding column within index pIdx is applied to it. Before ** this function returns, output parameter *pnExtract is set to the ** number of values appended to the record. @@ -74687,9 +83572,9 @@ SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue( /* ** Attempt to extract a value from expression pExpr using the methods -** as described for sqlite3Stat4ProbeSetValue() above. +** as described for sqlite3Stat4ProbeSetValue() above. ** -** If successful, set *ppVal to point to a new value object and return +** If successful, set *ppVal to point to a new value object and return ** SQLITE_OK. If no value can be extracted, but no other error occurs ** (e.g. OOM), return SQLITE_OK and set *ppVal to NULL. Or, if an error ** does occur, return an SQLite error code. The final value of *ppVal @@ -74709,7 +83594,7 @@ SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr( ** the column value into *ppVal. If *ppVal is initially NULL then a new ** sqlite3_value object is allocated. ** -** If *ppVal is initially NULL then the caller is responsible for +** If *ppVal is initially NULL then the caller is responsible for ** ensuring that the value written into *ppVal is eventually freed. */ SQLITE_PRIVATE int sqlite3Stat4Column( @@ -74719,11 +83604,11 @@ SQLITE_PRIVATE int sqlite3Stat4Column( int iCol, /* Column to extract */ sqlite3_value **ppVal /* OUT: Extracted value */ ){ - u32 t; /* a column type code */ + u32 t = 0; /* a column type code */ int nHdr; /* Size of the header in the record */ int iHdr; /* Next unread header byte */ int iField; /* Next unread data byte */ - int szField; /* Size of the current data field */ + int szField = 0; /* Size of the current data field */ int i; /* Column index */ u8 *a = (u8*)pRec; /* Typecast byte array */ Mem *pMem = *ppVal; /* Write result into this Mem object */ @@ -74808,6 +83693,9 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ if( (p->flags & MEM_Str)!=0 && pVal->enc==enc ){ return p->n; } + if( (p->flags & MEM_Str)!=0 && enc!=SQLITE_UTF8 && pVal->enc!=SQLITE_UTF8 ){ + return p->n; + } if( (p->flags & MEM_Blob)!=0 ){ if( p->flags & MEM_Zero ){ return p->n + p->u.nZero; @@ -74833,11 +83721,15 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ ** ************************************************************************* ** This file contains code used for creating, destroying, and populating -** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.) +** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.) */ /* #include "sqliteInt.h" */ /* #include "vdbeInt.h" */ +/* Forward references */ +static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef); +static void vdbeFreeOpArray(sqlite3 *, Op *, int); + /* ** Create a new virtual database engine. */ @@ -74849,22 +83741,29 @@ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse *pParse){ memset(&p->aOp, 0, sizeof(Vdbe)-offsetof(Vdbe,aOp)); p->db = db; if( db->pVdbe ){ - db->pVdbe->pPrev = p; + db->pVdbe->ppVPrev = &p->pVNext; } - p->pNext = db->pVdbe; - p->pPrev = 0; + p->pVNext = db->pVdbe; + p->ppVPrev = &db->pVdbe; db->pVdbe = p; - p->magic = VDBE_MAGIC_INIT; + assert( p->eVdbeState==VDBE_INIT_STATE ); p->pParse = pParse; pParse->pVdbe = p; assert( pParse->aLabel==0 ); assert( pParse->nLabel==0 ); - assert( pParse->nOpAlloc==0 ); + assert( p->nOpAlloc==0 ); assert( pParse->szOpAlloc==0 ); sqlite3VdbeAddOp2(p, OP_Init, 0, 1); return p; } +/* +** Return the Parse object that owns a Vdbe object. +*/ +SQLITE_PRIVATE Parse *sqlite3VdbeParser(Vdbe *p){ + return p->pParse; +} + /* ** Change the error string stored in Vdbe.zErrMsg */ @@ -74889,25 +83788,74 @@ SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe *p, const char *z, int n, u8 prepFlag p->zSql = sqlite3DbStrNDup(p->db, z, n); } +#ifdef SQLITE_ENABLE_NORMALIZE /* -** Swap all content between two VDBE structures. +** Add a new element to the Vdbe->pDblStr list. +*/ +SQLITE_PRIVATE void sqlite3VdbeAddDblquoteStr(sqlite3 *db, Vdbe *p, const char *z){ + if( p ){ + int n = sqlite3Strlen30(z); + DblquoteStr *pStr = sqlite3DbMallocRawNN(db, + sizeof(*pStr)+n+1-sizeof(pStr->z)); + if( pStr ){ + pStr->pNextStr = p->pDblStr; + p->pDblStr = pStr; + memcpy(pStr->z, z, n+1); + } + } +} +#endif + +#ifdef SQLITE_ENABLE_NORMALIZE +/* +** zId of length nId is a double-quoted identifier. Check to see if +** that identifier is really used as a string literal. +*/ +SQLITE_PRIVATE int sqlite3VdbeUsesDoubleQuotedString( + Vdbe *pVdbe, /* The prepared statement */ + const char *zId /* The double-quoted identifier, already dequoted */ +){ + DblquoteStr *pStr; + assert( zId!=0 ); + if( pVdbe->pDblStr==0 ) return 0; + for(pStr=pVdbe->pDblStr; pStr; pStr=pStr->pNextStr){ + if( strcmp(zId, pStr->z)==0 ) return 1; + } + return 0; +} +#endif + +/* +** Swap byte-code between two VDBE structures. +** +** This happens after pB was previously run and returned +** SQLITE_SCHEMA. The statement was then reprepared in pA. +** This routine transfers the new bytecode in pA over to pB +** so that pB can be run again. The old pB byte code is +** moved back to pA so that it will be cleaned up when pA is +** finalized. */ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){ - Vdbe tmp, *pTmp; + Vdbe tmp, *pTmp, **ppTmp; char *zTmp; assert( pA->db==pB->db ); tmp = *pA; *pA = *pB; *pB = tmp; - pTmp = pA->pNext; - pA->pNext = pB->pNext; - pB->pNext = pTmp; - pTmp = pA->pPrev; - pA->pPrev = pB->pPrev; - pB->pPrev = pTmp; + pTmp = pA->pVNext; + pA->pVNext = pB->pVNext; + pB->pVNext = pTmp; + ppTmp = pA->ppVPrev; + pA->ppVPrev = pB->ppVPrev; + pB->ppVPrev = ppTmp; zTmp = pA->zSql; pA->zSql = pB->zSql; pB->zSql = zTmp; +#ifdef SQLITE_ENABLE_NORMALIZE + zTmp = pA->zNormSql; + pA->zNormSql = pB->zNormSql; + pB->zNormSql = zTmp; +#endif pB->expmask = pA->expmask; pB->prepFlags = pA->prepFlags; memcpy(pB->aCounter, pA->aCounter, sizeof(pB->aCounter)); @@ -74915,13 +83863,13 @@ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){ } /* -** Resize the Vdbe.aOp array so that it is at least nOp elements larger +** Resize the Vdbe.aOp array so that it is at least nOp elements larger ** than its current size. nOp is guaranteed to be less than or equal ** to 1024/sizeof(Op). ** ** If an out-of-memory error occurs while resizing the array, return -** SQLITE_NOMEM. In this case Vdbe.aOp and Parse.nOpAlloc remain -** unchanged (this is so that any opcodes already allocated can be +** SQLITE_NOMEM. In this case Vdbe.aOp and Vdbe.nOpAlloc remain +** unchanged (this is so that any opcodes already allocated can be ** correctly deallocated along with the rest of the Vdbe). */ static int growOpArray(Vdbe *v, int nOp){ @@ -74929,16 +83877,18 @@ static int growOpArray(Vdbe *v, int nOp){ Parse *p = v->pParse; /* The SQLITE_TEST_REALLOC_STRESS compile-time option is designed to force - ** more frequent reallocs and hence provide more opportunities for + ** more frequent reallocs and hence provide more opportunities for ** simulated OOM faults. SQLITE_TEST_REALLOC_STRESS is generally used ** during testing only. With SQLITE_TEST_REALLOC_STRESS grow the op array ** by the minimum* amount required until the size reaches 512. Normal ** operation (without SQLITE_TEST_REALLOC_STRESS) is to double the current ** size of the op array or add 1KB of space, whichever is smaller. */ #ifdef SQLITE_TEST_REALLOC_STRESS - int nNew = (p->nOpAlloc>=512 ? p->nOpAlloc*2 : p->nOpAlloc+nOp); + sqlite3_int64 nNew = (v->nOpAlloc>=512 ? 2*(sqlite3_int64)v->nOpAlloc + : (sqlite3_int64)v->nOpAlloc+nOp); #else - int nNew = (p->nOpAlloc ? p->nOpAlloc*2 : (int)(1024/sizeof(Op))); + sqlite3_int64 nNew = (v->nOpAlloc ? 2*(sqlite3_int64)v->nOpAlloc + : (sqlite3_int64)(1024/sizeof(Op))); UNUSED_PARAMETER(nOp); #endif @@ -74948,12 +83898,12 @@ static int growOpArray(Vdbe *v, int nOp){ return SQLITE_NOMEM; } - assert( nOp<=(1024/sizeof(Op)) ); - assert( nNew>=(p->nOpAlloc+nOp) ); + assert( nOp<=(int)(1024/sizeof(Op)) ); + assert( nNew>=(v->nOpAlloc+nOp) ); pNew = sqlite3DbRealloc(p->db, v->aOp, nNew*sizeof(Op)); if( pNew ){ p->szOpAlloc = sqlite3DbMallocSize(p->db, pNew); - p->nOpAlloc = p->szOpAlloc/sizeof(Op); + v->nOpAlloc = p->szOpAlloc/sizeof(Op); v->aOp = pNew; } return (pNew ? SQLITE_OK : SQLITE_NOMEM_BKPT); @@ -74962,14 +83912,52 @@ static int growOpArray(Vdbe *v, int nOp){ #ifdef SQLITE_DEBUG /* This routine is just a convenient place to set a breakpoint that will ** fire after each opcode is inserted and displayed using -** "PRAGMA vdbe_addoptrace=on". +** "PRAGMA vdbe_addoptrace=on". Parameters "pc" (program counter) and +** pOp are available to make the breakpoint conditional. +** +** Other useful labels for breakpoints include: +** test_trace_breakpoint(pc,pOp) +** sqlite3CorruptError(lineno) +** sqlite3MisuseError(lineno) +** sqlite3CantopenError(lineno) */ -static void test_addop_breakpoint(void){ +static void test_addop_breakpoint(int pc, Op *pOp){ static int n = 0; + (void)pc; + (void)pOp; n++; } #endif +/* +** Slow paths for sqlite3VdbeAddOp3() and sqlite3VdbeAddOp4Int() for the +** unusual case when we need to increase the size of the Vdbe.aOp[] array +** before adding the new opcode. +*/ +static SQLITE_NOINLINE int growOp3(Vdbe *p, int op, int p1, int p2, int p3){ + assert( p->nOpAlloc<=p->nOp ); + if( growOpArray(p, 1) ) return 1; + assert( p->nOpAlloc>p->nOp ); + return sqlite3VdbeAddOp3(p, op, p1, p2, p3); +} +static SQLITE_NOINLINE int addOp4IntSlow( + Vdbe *p, /* Add the opcode to this VM */ + int op, /* The new opcode */ + int p1, /* The P1 operand */ + int p2, /* The P2 operand */ + int p3, /* The P3 operand */ + int p4 /* The P4 operand as an integer */ +){ + int addr = sqlite3VdbeAddOp3(p, op, p1, p2, p3); + if( p->db->mallocFailed==0 ){ + VdbeOp *pOp = &p->aOp[addr]; + pOp->p4type = P4_INT32; + pOp->p4.i = p4; + } + return addr; +} + + /* ** Add a new instruction to the list of instructions current in the ** VDBE. Return the address of the new instruction. @@ -74980,63 +83968,8 @@ static void test_addop_breakpoint(void){ ** ** op The opcode for this instruction ** -** p1, p2, p3 Operands -** -** Use the sqlite3VdbeResolveLabel() function to fix an address and -** the sqlite3VdbeChangeP4() function to change the value of the P4 -** operand. +** p1, p2, p3, p4 Operands */ -static SQLITE_NOINLINE int growOp3(Vdbe *p, int op, int p1, int p2, int p3){ - assert( p->pParse->nOpAlloc<=p->nOp ); - if( growOpArray(p, 1) ) return 1; - assert( p->pParse->nOpAlloc>p->nOp ); - return sqlite3VdbeAddOp3(p, op, p1, p2, p3); -} -SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){ - int i; - VdbeOp *pOp; - - i = p->nOp; - assert( p->magic==VDBE_MAGIC_INIT ); - assert( op>=0 && op<0xff ); - if( p->pParse->nOpAlloc<=i ){ - return growOp3(p, op, p1, p2, p3); - } - p->nOp++; - pOp = &p->aOp[i]; - pOp->opcode = (u8)op; - pOp->p5 = 0; - pOp->p1 = p1; - pOp->p2 = p2; - pOp->p3 = p3; - pOp->p4.p = 0; - pOp->p4type = P4_NOTUSED; -#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - pOp->zComment = 0; -#endif -#ifdef SQLITE_DEBUG - if( p->db->flags & SQLITE_VdbeAddopTrace ){ - int jj, kk; - Parse *pParse = p->pParse; - for(jj=kk=0; jjnColCache; jj++){ - struct yColCache *x = pParse->aColCache + jj; - printf(" r[%d]={%d:%d}", x->iReg, x->iTable, x->iColumn); - kk++; - } - if( kk ) printf("\n"); - sqlite3VdbePrintOp(0, i, &p->aOp[i]); - test_addop_breakpoint(); - } -#endif -#ifdef VDBE_PROFILE - pOp->cycles = 0; - pOp->cnt = 0; -#endif -#ifdef SQLITE_VDBE_COVERAGE - pOp->iSrcLine = 0; -#endif - return i; -} SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe *p, int op){ return sqlite3VdbeAddOp3(p, op, 0, 0, 0); } @@ -75046,6 +83979,100 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe *p, int op, int p1){ SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe *p, int op, int p1, int p2){ return sqlite3VdbeAddOp3(p, op, p1, p2, 0); } +SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){ + int i; + VdbeOp *pOp; + + i = p->nOp; + assert( p->eVdbeState==VDBE_INIT_STATE ); + assert( op>=0 && op<0xff ); + if( p->nOpAlloc<=i ){ + return growOp3(p, op, p1, p2, p3); + } + assert( p->aOp!=0 ); + p->nOp++; + pOp = &p->aOp[i]; + assert( pOp!=0 ); + pOp->opcode = (u8)op; + pOp->p5 = 0; + pOp->p1 = p1; + pOp->p2 = p2; + pOp->p3 = p3; + pOp->p4.p = 0; + pOp->p4type = P4_NOTUSED; + + /* Replicate this logic in sqlite3VdbeAddOp4Int() + ** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv */ +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + pOp->zComment = 0; +#endif +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || defined(VDBE_PROFILE) + pOp->nExec = 0; + pOp->nCycle = 0; +#endif +#ifdef SQLITE_DEBUG + if( p->db->flags & SQLITE_VdbeAddopTrace ){ + sqlite3VdbePrintOp(0, i, &p->aOp[i]); + test_addop_breakpoint(i, &p->aOp[i]); + } +#endif +#ifdef SQLITE_VDBE_COVERAGE + pOp->iSrcLine = 0; +#endif + /* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + ** Replicate in sqlite3VdbeAddOp4Int() */ + + return i; +} +SQLITE_PRIVATE int sqlite3VdbeAddOp4Int( + Vdbe *p, /* Add the opcode to this VM */ + int op, /* The new opcode */ + int p1, /* The P1 operand */ + int p2, /* The P2 operand */ + int p3, /* The P3 operand */ + int p4 /* The P4 operand as an integer */ +){ + int i; + VdbeOp *pOp; + + i = p->nOp; + if( p->nOpAlloc<=i ){ + return addOp4IntSlow(p, op, p1, p2, p3, p4); + } + p->nOp++; + pOp = &p->aOp[i]; + assert( pOp!=0 ); + pOp->opcode = (u8)op; + pOp->p5 = 0; + pOp->p1 = p1; + pOp->p2 = p2; + pOp->p3 = p3; + pOp->p4.i = p4; + pOp->p4type = P4_INT32; + + /* Replicate this logic in sqlite3VdbeAddOp3() + ** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv */ +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + pOp->zComment = 0; +#endif +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || defined(VDBE_PROFILE) + pOp->nExec = 0; + pOp->nCycle = 0; +#endif +#ifdef SQLITE_DEBUG + if( p->db->flags & SQLITE_VdbeAddopTrace ){ + sqlite3VdbePrintOp(0, i, &p->aOp[i]); + test_addop_breakpoint(i, &p->aOp[i]); + } +#endif +#ifdef SQLITE_VDBE_COVERAGE + pOp->iSrcLine = 0; +#endif + /* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + ** Replicate in sqlite3VdbeAddOp3() */ + + return i; +} /* Generate code for an unconditional jump to instruction iDest */ @@ -75108,6 +84135,50 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp4( return addr; } +/* +** Add an OP_Function or OP_PureFunc opcode. +** +** The eCallCtx argument is information (typically taken from Expr.op2) +** that describes the calling context of the function. 0 means a general +** function call. NC_IsCheck means called by a check constraint, +** NC_IdxExpr means called as part of an index expression. NC_PartIdx +** means in the WHERE clause of a partial index. NC_GenCol means called +** while computing a generated column value. 0 is the usual case. +*/ +SQLITE_PRIVATE int sqlite3VdbeAddFunctionCall( + Parse *pParse, /* Parsing context */ + int p1, /* Constant argument mask */ + int p2, /* First argument register */ + int p3, /* Register into which results are written */ + int nArg, /* Number of argument */ + const FuncDef *pFunc, /* The function to be invoked */ + int eCallCtx /* Calling context */ +){ + Vdbe *v = pParse->pVdbe; + int nByte; + int addr; + sqlite3_context *pCtx; + assert( v ); + nByte = sizeof(*pCtx) + (nArg-1)*sizeof(sqlite3_value*); + pCtx = sqlite3DbMallocRawNN(pParse->db, nByte); + if( pCtx==0 ){ + assert( pParse->db->mallocFailed ); + freeEphemeralFunction(pParse->db, (FuncDef*)pFunc); + return 0; + } + pCtx->pOut = 0; + pCtx->pFunc = (FuncDef*)pFunc; + pCtx->pVdbe = 0; + pCtx->isError = 0; + pCtx->argc = nArg; + pCtx->iOp = sqlite3VdbeCurrentAddr(v); + addr = sqlite3VdbeAddOp4(v, eCallCtx ? OP_PureFunc : OP_Function, + p1, p2, p3, (char*)pCtx, P4_FUNCCTX); + sqlite3VdbeChangeP5(v, eCallCtx & NC_SelfRef); + sqlite3MayAbort(pParse); + return addr; +} + /* ** Add an opcode that includes the p4 value with a P4_INT64 or ** P4_REAL type. @@ -75138,16 +84209,33 @@ SQLITE_PRIVATE int sqlite3VdbeExplainParent(Parse *pParse){ return pOp->p2; } +/* +** Set a debugger breakpoint on the following routine in order to +** monitor the EXPLAIN QUERY PLAN code generation. +*/ +#if defined(SQLITE_DEBUG) +SQLITE_PRIVATE void sqlite3ExplainBreakpoint(const char *z1, const char *z2){ + (void)z1; + (void)z2; +} +#endif + /* ** Add a new OP_Explain opcode. ** ** If the bPush flag is true, then make this opcode the parent for ** subsequent Explains until sqlite3VdbeExplainPop() is called. */ -SQLITE_PRIVATE void sqlite3VdbeExplain(Parse *pParse, u8 bPush, const char *zFmt, ...){ - if( pParse->explain==2 ){ +SQLITE_PRIVATE int sqlite3VdbeExplain(Parse *pParse, u8 bPush, const char *zFmt, ...){ + int addr = 0; +#if !defined(SQLITE_DEBUG) + /* Always include the OP_Explain opcodes if SQLITE_DEBUG is defined. + ** But omit them (for performance) during production builds */ + if( pParse->explain==2 || IS_STMT_SCANSTATUS(pParse->db) ) +#endif + { char *zMsg; - Vdbe *v = pParse->pVdbe; + Vdbe *v; va_list ap; int iThis; va_start(ap, zFmt); @@ -75155,16 +84243,22 @@ SQLITE_PRIVATE void sqlite3VdbeExplain(Parse *pParse, u8 bPush, const char *zFmt va_end(ap); v = pParse->pVdbe; iThis = v->nOp; - sqlite3VdbeAddOp4(v, OP_Explain, iThis, pParse->addrExplain, 0, + addr = sqlite3VdbeAddOp4(v, OP_Explain, iThis, pParse->addrExplain, 0, zMsg, P4_DYNAMIC); - if( bPush) pParse->addrExplain = iThis; + sqlite3ExplainBreakpoint(bPush?"PUSH":"", sqlite3VdbeGetLastOp(v)->p4.z); + if( bPush){ + pParse->addrExplain = iThis; + } + sqlite3VdbeScanStatus(v, iThis, -1, -1, 0, 0); } + return addr; } /* ** Pop the EXPLAIN QUERY PLAN stack one level. */ SQLITE_PRIVATE void sqlite3VdbeExplainPop(Parse *pParse){ + sqlite3ExplainBreakpoint("POP", 0); pParse->addrExplain = sqlite3VdbeExplainParent(pParse); } #endif /* SQLITE_OMIT_EXPLAIN */ @@ -75177,30 +84271,12 @@ SQLITE_PRIVATE void sqlite3VdbeExplainPop(Parse *pParse){ ** The zWhere string must have been obtained from sqlite3_malloc(). ** This routine will take ownership of the allocated memory. */ -SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe *p, int iDb, char *zWhere){ +SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe *p, int iDb, char *zWhere, u16 p5){ int j; sqlite3VdbeAddOp4(p, OP_ParseSchema, iDb, 0, 0, zWhere, P4_DYNAMIC); + sqlite3VdbeChangeP5(p, p5); for(j=0; jdb->nDb; j++) sqlite3VdbeUsesBtree(p, j); -} - -/* -** Add an opcode that includes the p4 value as an integer. -*/ -SQLITE_PRIVATE int sqlite3VdbeAddOp4Int( - Vdbe *p, /* Add the opcode to this VM */ - int op, /* The new opcode */ - int p1, /* The P1 operand */ - int p2, /* The P2 operand */ - int p3, /* The P3 operand */ - int p4 /* The P4 operand as an integer */ -){ - int addr = sqlite3VdbeAddOp3(p, op, p1, p2, p3); - if( p->db->mallocFailed==0 ){ - VdbeOp *pOp = &p->aOp[addr]; - pOp->p4type = P4_INT32; - pOp->p4.i = p4; - } - return addr; + sqlite3MayAbort(p->pParse); } /* Insert the end of a co-routine @@ -75229,21 +84305,22 @@ SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe *v, int regYield){ ** The VDBE knows that a P2 value is a label because labels are ** always negative and P2 values are suppose to be non-negative. ** Hence, a negative P2 value is a label that has yet to be resolved. +** (Later:) This is only true for opcodes that have the OPFLG_JUMP +** property. ** -** Zero is returned if a malloc() fails. +** Variable usage notes: +** +** Parse.aLabel[x] Stores the address that the x-th label resolves +** into. For testing (SQLITE_DEBUG), unresolved +** labels stores -1, but that is not required. +** Parse.nLabelAlloc Number of slots allocated to Parse.aLabel[] +** Parse.nLabel The *negative* of the number of labels that have +** been issued. The negative is stored because +** that gives a performance improvement over storing +** the equivalent positive value. */ -SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe *v){ - Parse *p = v->pParse; - int i = p->nLabel++; - assert( v->magic==VDBE_MAGIC_INIT ); - if( (i & (i-1))==0 ){ - p->aLabel = sqlite3DbReallocOrFree(p->db, p->aLabel, - (i*2+1)*sizeof(p->aLabel[0])); - } - if( p->aLabel ){ - p->aLabel[i] = -1; - } - return ADDR(i); +SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Parse *pParse){ + return --pParse->nLabel; } /* @@ -75251,67 +84328,80 @@ SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe *v){ ** be inserted. The parameter "x" must have been obtained from ** a prior call to sqlite3VdbeMakeLabel(). */ +static SQLITE_NOINLINE void resizeResolveLabel(Parse *p, Vdbe *v, int j){ + int nNewSize = 10 - p->nLabel; + p->aLabel = sqlite3DbReallocOrFree(p->db, p->aLabel, + nNewSize*sizeof(p->aLabel[0])); + if( p->aLabel==0 ){ + p->nLabelAlloc = 0; + }else{ +#ifdef SQLITE_DEBUG + int i; + for(i=p->nLabelAlloc; iaLabel[i] = -1; +#endif + if( nNewSize>=100 && (nNewSize/100)>(p->nLabelAlloc/100) ){ + sqlite3ProgressCheck(p); + } + p->nLabelAlloc = nNewSize; + p->aLabel[j] = v->nOp; + } +} SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe *v, int x){ Parse *p = v->pParse; int j = ADDR(x); - assert( v->magic==VDBE_MAGIC_INIT ); - assert( jnLabel ); + assert( v->eVdbeState==VDBE_INIT_STATE ); + assert( j<-p->nLabel ); assert( j>=0 ); - if( p->aLabel ){ #ifdef SQLITE_DEBUG - if( p->db->flags & SQLITE_VdbeAddopTrace ){ - printf("RESOLVE LABEL %d to %d\n", x, v->nOp); - } + if( p->db->flags & SQLITE_VdbeAddopTrace ){ + printf("RESOLVE LABEL %d to %d\n", x, v->nOp); + } #endif + if( p->nLabelAlloc + p->nLabel < 0 ){ + resizeResolveLabel(p,v,j); + }else{ assert( p->aLabel[j]==(-1) ); /* Labels may only be resolved once */ p->aLabel[j] = v->nOp; } } -#ifdef SQLITE_COVERAGE_TEST -/* -** Return TRUE if and only if the label x has already been resolved. -** Return FALSE (zero) if label x is still unresolved. -** -** This routine is only used inside of testcase() macros, and so it -** only exists when measuring test coverage. -*/ -SQLITE_PRIVATE int sqlite3VdbeLabelHasBeenResolved(Vdbe *v, int x){ - return v->pParse->aLabel && v->pParse->aLabel[ADDR(x)]>=0; -} -#endif /* SQLITE_COVERAGE_TEST */ - /* ** Mark the VDBE as one that can only be run one time. */ SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe *p){ - p->runOnlyOnce = 1; + sqlite3VdbeAddOp2(p, OP_Expire, 1, 1); } /* -** Mark the VDBE as one that can only be run multiple times. +** Mark the VDBE as one that can be run multiple times. */ SQLITE_PRIVATE void sqlite3VdbeReusable(Vdbe *p){ - p->runOnlyOnce = 0; + int i; + for(i=1; ALWAYS(inOp); i++){ + if( ALWAYS(p->aOp[i].opcode==OP_Expire) ){ + p->aOp[1].opcode = OP_Noop; + break; + } + } } #ifdef SQLITE_DEBUG /* sqlite3AssertMayAbort() logic */ /* ** The following type and function are used to iterate through all opcodes -** in a Vdbe main program and each of the sub-programs (triggers) it may +** in a Vdbe main program and each of the sub-programs (triggers) it may ** invoke directly or indirectly. It should be used as follows: ** ** Op *pOp; ** VdbeOpIter sIter; ** ** memset(&sIter, 0, sizeof(sIter)); -** sIter.v = v; // v is of type Vdbe* +** sIter.v = v; // v is of type Vdbe* ** while( (pOp = opIterNext(&sIter)) ){ ** // Do something with pOp ** } ** sqlite3DbFree(v->db, sIter.apSub); -** +** */ typedef struct VdbeOpIter VdbeOpIter; struct VdbeOpIter { @@ -75344,7 +84434,7 @@ static Op *opIterNext(VdbeOpIter *p){ p->iSub++; p->iAddr = 0; } - + if( pRet->p4type==P4_SUBPROGRAM ){ int nByte = (p->nSub+1)*sizeof(SubProgram*); int j; @@ -75375,9 +84465,10 @@ static Op *opIterNext(VdbeOpIter *p){ ** * OP_HaltIfNull with P1=SQLITE_CONSTRAINT and P2=OE_Abort. ** * OP_Destroy ** * OP_VUpdate +** * OP_VCreate ** * OP_VRename ** * OP_FkCounter with P2==0 (immediate foreign key constraint) -** * OP_CreateBtree/BTREE_INTKEY and OP_InitCoroutine +** * OP_CreateBtree/BTREE_INTKEY and OP_InitCoroutine ** (for CREATE TABLE AS SELECT ...) ** ** Then check that the value of Parse.mayAbort is true if an @@ -75391,22 +84482,37 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){ int hasAbort = 0; int hasFkCounter = 0; int hasCreateTable = 0; + int hasCreateIndex = 0; int hasInitCoroutine = 0; Op *pOp; VdbeOpIter sIter; + + if( v==0 ) return 0; memset(&sIter, 0, sizeof(sIter)); sIter.v = v; while( (pOp = opIterNext(&sIter))!=0 ){ int opcode = pOp->opcode; - if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename - || ((opcode==OP_Halt || opcode==OP_HaltIfNull) - && ((pOp->p1&0xff)==SQLITE_CONSTRAINT && pOp->p2==OE_Abort)) + if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename + || opcode==OP_VDestroy + || opcode==OP_VCreate + || opcode==OP_ParseSchema + || opcode==OP_Function || opcode==OP_PureFunc + || ((opcode==OP_Halt || opcode==OP_HaltIfNull) + && ((pOp->p1)!=SQLITE_OK && pOp->p2==OE_Abort)) ){ hasAbort = 1; break; } if( opcode==OP_CreateBtree && pOp->p3==BTREE_INTKEY ) hasCreateTable = 1; + if( mayAbort ){ + /* hasCreateIndex may also be set for some DELETE statements that use + ** OP_Clear. So this routine may end up returning true in the case + ** where a "DELETE FROM tbl" has a statement-journal but does not + ** require one. This is not so bad - it is an inefficiency, not a bug. */ + if( opcode==OP_CreateBtree && pOp->p3==BTREE_BLOBKEY ) hasCreateIndex = 1; + if( opcode==OP_Clear ) hasCreateIndex = 1; + } if( opcode==OP_InitCoroutine ) hasInitCoroutine = 1; #ifndef SQLITE_OMIT_FOREIGN_KEY if( opcode==OP_FkCounter && pOp->p1==0 && pOp->p2==1 ){ @@ -75422,7 +84528,8 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){ ** true for this case to prevent the assert() in the callers frame ** from failing. */ return ( v->db->mallocFailed || hasAbort==mayAbort || hasFkCounter - || (hasCreateTable && hasInitCoroutine) ); + || (hasCreateTable && hasInitCoroutine) || hasCreateIndex + ); } #endif /* SQLITE_DEBUG - the sqlite3AssertMayAbort() function */ @@ -75465,7 +84572,7 @@ SQLITE_PRIVATE void sqlite3VdbeAssertAbortable(Vdbe *p){ ** (3) Update the Vdbe.readOnly and Vdbe.bIsReader flags to accurately ** indicate what the prepared statement actually does. ** -** (4) Initialize the p4.xAdvance pointer on opcodes that use it. +** (4) (discontinued) ** ** (5) Reclaim the memory allocated for storing labels. ** @@ -75478,11 +84585,13 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ Op *pOp; Parse *pParse = p->pParse; int *aLabel = pParse->aLabel; + + assert( pParse->db->mallocFailed==0 ); /* tag-20230419-1 */ p->readOnly = 1; p->bIsReader = 0; pOp = &p->aOp[p->nOp-1]; - while(1){ - + assert( p->aOp[0].opcode==OP_Init ); + while( 1 /* Loop terminates when it reaches the OP_Init opcode */ ){ /* Only JUMP opcodes and the short list of special opcodes in the switch ** below need to be considered. The mkopcodeh.tcl generator script groups ** all these opcodes together near the front of the opcode list. Skip @@ -75495,7 +84604,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ switch( pOp->opcode ){ case OP_Transaction: { if( pOp->p2!=0 ) p->readOnly = 0; - /* fall thru */ + /* no break */ deliberate_fall_through } case OP_AutoCommit: case OP_Savepoint: { @@ -75511,26 +84620,9 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ p->bIsReader = 1; break; } - case OP_Next: - case OP_NextIfOpen: - case OP_SorterNext: { - pOp->p4.xAdvance = sqlite3BtreeNext; - pOp->p4type = P4_ADVANCE; - /* The code generator never codes any of these opcodes as a jump - ** to a label. They are always coded as a jump backwards to a - ** known address */ + case OP_Init: { assert( pOp->p2>=0 ); - break; - } - case OP_Prev: - case OP_PrevIfOpen: { - pOp->p4.xAdvance = sqlite3BtreePrevious; - pOp->p4type = P4_ADVANCE; - /* The code generator never codes any of these opcodes as a jump - ** to a label. They are always coded as a jump backwards to a - ** known address */ - assert( pOp->p2>=0 ); - break; + goto resolve_p2_values_loop_exit; } #ifndef SQLITE_OMIT_VIRTUALTABLE case OP_VUpdate: { @@ -75544,6 +84636,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ n = pOp[-1].p1; if( n>nMaxArgs ) nMaxArgs = n; /* Fall through into the default case */ + /* no break */ deliberate_fall_through } #endif default: { @@ -75552,7 +84645,8 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ ** non-jump opcodes less than SQLITE_MX_JUMP_CODE are guaranteed to ** have non-negative values for P2. */ assert( (sqlite3OpcodeProperty[pOp->opcode] & OPFLG_JUMP)!=0 ); - assert( ADDR(pOp->p2)nLabel ); + assert( ADDR(pOp->p2)<-pParse->nLabel ); + assert( aLabel!=0 ); /* True because of tag-20230419-1 */ pOp->p2 = aLabel[ADDR(pOp->p2)]; } break; @@ -75563,21 +84657,108 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ ** have non-negative values for P2. */ assert( (sqlite3OpcodeProperty[pOp->opcode]&OPFLG_JUMP)==0 || pOp->p2>=0); } - if( pOp==p->aOp ) break; + assert( pOp>p->aOp ); pOp--; } - sqlite3DbFree(p->db, pParse->aLabel); - pParse->aLabel = 0; +resolve_p2_values_loop_exit: + if( aLabel ){ + sqlite3DbNNFreeNN(p->db, pParse->aLabel); + pParse->aLabel = 0; + } pParse->nLabel = 0; *pMaxFuncArgs = nMaxArgs; assert( p->bIsReader!=0 || DbMaskAllZero(p->btreeMask) ); } +#ifdef SQLITE_DEBUG +/* +** Check to see if a subroutine contains a jump to a location outside of +** the subroutine. If a jump outside the subroutine is detected, add code +** that will cause the program to halt with an error message. +** +** The subroutine consists of opcodes between iFirst and iLast. Jumps to +** locations within the subroutine are acceptable. iRetReg is a register +** that contains the return address. Jumps to outside the range of iFirst +** through iLast are also acceptable as long as the jump destination is +** an OP_Return to iReturnAddr. +** +** A jump to an unresolved label means that the jump destination will be +** beyond the current address. That is normally a jump to an early +** termination and is consider acceptable. +** +** This routine only runs during debug builds. The purpose is (of course) +** to detect invalid escapes out of a subroutine. The OP_Halt opcode +** is generated rather than an assert() or other error, so that ".eqp full" +** will still work to show the original bytecode, to aid in debugging. +*/ +SQLITE_PRIVATE void sqlite3VdbeNoJumpsOutsideSubrtn( + Vdbe *v, /* The byte-code program under construction */ + int iFirst, /* First opcode of the subroutine */ + int iLast, /* Last opcode of the subroutine */ + int iRetReg /* Subroutine return address register */ +){ + VdbeOp *pOp; + Parse *pParse; + int i; + sqlite3_str *pErr = 0; + assert( v!=0 ); + pParse = v->pParse; + assert( pParse!=0 ); + if( pParse->nErr ) return; + assert( iLast>=iFirst ); + assert( iLastnOp ); + pOp = &v->aOp[iFirst]; + for(i=iFirst; i<=iLast; i++, pOp++){ + if( (sqlite3OpcodeProperty[pOp->opcode] & OPFLG_JUMP)!=0 ){ + int iDest = pOp->p2; /* Jump destination */ + if( iDest==0 ) continue; + if( pOp->opcode==OP_Gosub ) continue; + if( iDest<0 ){ + int j = ADDR(iDest); + assert( j>=0 ); + if( j>=-pParse->nLabel || pParse->aLabel[j]<0 ){ + continue; + } + iDest = pParse->aLabel[j]; + } + if( iDestiLast ){ + int j = iDest; + for(; jnOp; j++){ + VdbeOp *pX = &v->aOp[j]; + if( pX->opcode==OP_Return ){ + if( pX->p1==iRetReg ) break; + continue; + } + if( pX->opcode==OP_Noop ) continue; + if( pX->opcode==OP_Explain ) continue; + if( pErr==0 ){ + pErr = sqlite3_str_new(0); + }else{ + sqlite3_str_appendchar(pErr, 1, '\n'); + } + sqlite3_str_appendf(pErr, + "Opcode at %d jumps to %d which is outside the " + "subroutine at %d..%d", + i, iDest, iFirst, iLast); + break; + } + } + } + } + if( pErr ){ + char *zErr = sqlite3_str_finish(pErr); + sqlite3VdbeAddOp4(v, OP_Halt, SQLITE_INTERNAL, OE_Abort, 0, zErr, 0); + sqlite3_free(zErr); + sqlite3MayAbort(pParse); + } +} +#endif /* SQLITE_DEBUG */ + /* ** Return the address of the next instruction to be inserted. */ SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe *p){ - assert( p->magic==VDBE_MAGIC_INIT ); + assert( p->eVdbeState==VDBE_INIT_STATE ); return p->nOp; } @@ -75591,7 +84772,7 @@ SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe *p){ */ #if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS) SQLITE_PRIVATE void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N){ - assert( p->nOp + N <= p->pParse->nOpAlloc ); + assert( p->nOp + N <= p->nOpAlloc ); } #endif @@ -75625,12 +84806,12 @@ SQLITE_PRIVATE void sqlite3VdbeVerifyAbortable(Vdbe *p, int onError){ /* ** This function returns a pointer to the array of opcodes associated with ** the Vdbe passed as the first argument. It is the callers responsibility -** to arrange for the returned array to be eventually freed using the +** to arrange for the returned array to be eventually freed using the ** vdbeFreeOpArray() function. ** ** Before returning, *pnOp is set to the number of entries in the returned -** array. Also, *pnMaxArg is set to the larger of its current value and -** the number of entries in the Vdbe.apArg[] array required to execute the +** array. Also, *pnMaxArg is set to the larger of its current value and +** the number of entries in the Vdbe.apArg[] array required to execute the ** returned program. */ SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe *p, int *pnOp, int *pnMaxArg){ @@ -75662,8 +84843,8 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList( int i; VdbeOp *pOut, *pFirst; assert( nOp>0 ); - assert( p->magic==VDBE_MAGIC_INIT ); - if( p->nOp + nOp > p->pParse->nOpAlloc && growOpArray(p, nOp) ){ + assert( p->eVdbeState==VDBE_INIT_STATE ); + if( p->nOp + nOp > p->nOpAlloc && growOpArray(p, nOp) ){ return 0; } pFirst = pOut = &p->aOp[p->nOp]; @@ -75704,41 +84885,108 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList( SQLITE_PRIVATE void sqlite3VdbeScanStatus( Vdbe *p, /* VM to add scanstatus() to */ int addrExplain, /* Address of OP_Explain (or 0) */ - int addrLoop, /* Address of loop counter */ + int addrLoop, /* Address of loop counter */ int addrVisit, /* Address of rows visited counter */ LogEst nEst, /* Estimated number of output rows */ const char *zName /* Name of table or index being scanned */ ){ - int nByte = (p->nScan+1) * sizeof(ScanStatus); - ScanStatus *aNew; - aNew = (ScanStatus*)sqlite3DbRealloc(p->db, p->aScan, nByte); - if( aNew ){ - ScanStatus *pNew = &aNew[p->nScan++]; - pNew->addrExplain = addrExplain; - pNew->addrLoop = addrLoop; - pNew->addrVisit = addrVisit; - pNew->nEst = nEst; - pNew->zName = sqlite3DbStrDup(p->db, zName); - p->aScan = aNew; + if( IS_STMT_SCANSTATUS(p->db) ){ + sqlite3_int64 nByte = (p->nScan+1) * sizeof(ScanStatus); + ScanStatus *aNew; + aNew = (ScanStatus*)sqlite3DbRealloc(p->db, p->aScan, nByte); + if( aNew ){ + ScanStatus *pNew = &aNew[p->nScan++]; + memset(pNew, 0, sizeof(ScanStatus)); + pNew->addrExplain = addrExplain; + pNew->addrLoop = addrLoop; + pNew->addrVisit = addrVisit; + pNew->nEst = nEst; + pNew->zName = sqlite3DbStrDup(p->db, zName); + p->aScan = aNew; + } } } -#endif + +/* +** Add the range of instructions from addrStart to addrEnd (inclusive) to +** the set of those corresponding to the sqlite3_stmt_scanstatus() counters +** associated with the OP_Explain instruction at addrExplain. The +** sum of the sqlite3Hwtime() values for each of these instructions +** will be returned for SQLITE_SCANSTAT_NCYCLE requests. +*/ +SQLITE_PRIVATE void sqlite3VdbeScanStatusRange( + Vdbe *p, + int addrExplain, + int addrStart, + int addrEnd +){ + if( IS_STMT_SCANSTATUS(p->db) ){ + ScanStatus *pScan = 0; + int ii; + for(ii=p->nScan-1; ii>=0; ii--){ + pScan = &p->aScan[ii]; + if( pScan->addrExplain==addrExplain ) break; + pScan = 0; + } + if( pScan ){ + if( addrEnd<0 ) addrEnd = sqlite3VdbeCurrentAddr(p)-1; + for(ii=0; iiaAddrRange); ii+=2){ + if( pScan->aAddrRange[ii]==0 ){ + pScan->aAddrRange[ii] = addrStart; + pScan->aAddrRange[ii+1] = addrEnd; + break; + } + } + } + } +} + +/* +** Set the addresses for the SQLITE_SCANSTAT_NLOOP and SQLITE_SCANSTAT_NROW +** counters for the query element associated with the OP_Explain at +** addrExplain. +*/ +SQLITE_PRIVATE void sqlite3VdbeScanStatusCounters( + Vdbe *p, + int addrExplain, + int addrLoop, + int addrVisit +){ + if( IS_STMT_SCANSTATUS(p->db) ){ + ScanStatus *pScan = 0; + int ii; + for(ii=p->nScan-1; ii>=0; ii--){ + pScan = &p->aScan[ii]; + if( pScan->addrExplain==addrExplain ) break; + pScan = 0; + } + if( pScan ){ + if( addrLoop>0 ) pScan->addrLoop = addrLoop; + if( addrVisit>0 ) pScan->addrVisit = addrVisit; + } + } +} +#endif /* defined(SQLITE_ENABLE_STMT_SCANSTATUS) */ /* ** Change the value of the opcode, or P1, P2, P3, or P5 operands ** for a specific instruction. */ -SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe *p, u32 addr, u8 iNewOpcode){ +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe *p, int addr, u8 iNewOpcode){ + assert( addr>=0 ); sqlite3VdbeGetOp(p,addr)->opcode = iNewOpcode; } -SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){ +SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, int addr, int val){ + assert( addr>=0 ); sqlite3VdbeGetOp(p,addr)->p1 = val; } -SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){ +SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, int addr, int val){ + assert( addr>=0 || p->db->mallocFailed ); sqlite3VdbeGetOp(p,addr)->p2 = val; } -SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){ +SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, int addr, int val){ + assert( addr>=0 ); sqlite3VdbeGetOp(p,addr)->p3 = val; } SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u16 p5){ @@ -75746,6 +84994,18 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u16 p5){ if( p->nOp>0 ) p->aOp[p->nOp-1].p5 = p5; } +/* +** If the previous opcode is an OP_Column that delivers results +** into register iDest, then add the OPFLAG_TYPEOFARG flag to that +** opcode. +*/ +SQLITE_PRIVATE void sqlite3VdbeTypeofColumn(Vdbe *p, int iDest){ + VdbeOp *pOp = sqlite3VdbeGetLastOp(p); + if( pOp->p3==iDest && pOp->opcode==OP_Column ){ + pOp->p5 |= OPFLAG_TYPEOFARG; + } +} + /* ** Change the P2 operand of instruction addr so that it points to ** the address of the next instruction to be coded. @@ -75754,29 +85014,57 @@ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){ sqlite3VdbeChangeP2(p, addr, p->nOp); } - /* -** If the input FuncDef structure is ephemeral, then free it. If -** the FuncDef is not ephermal, then do nothing. +** Change the P2 operand of the jump instruction at addr so that +** the jump lands on the next opcode. Or if the jump instruction was +** the previous opcode (and is thus a no-op) then simply back up +** the next instruction counter by one slot so that the jump is +** overwritten by the next inserted opcode. +** +** This routine is an optimization of sqlite3VdbeJumpHere() that +** strives to omit useless byte-code like this: +** +** 7 Once 0 8 0 +** 8 ... */ -static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef){ - if( (pDef->funcFlags & SQLITE_FUNC_EPHEM)!=0 ){ - sqlite3DbFreeNN(db, pDef); +SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe *p, int addr){ + if( addr==p->nOp-1 ){ + assert( p->aOp[addr].opcode==OP_Once + || p->aOp[addr].opcode==OP_If + || p->aOp[addr].opcode==OP_FkIfZero ); + assert( p->aOp[addr].p4type==0 ); +#ifdef SQLITE_VDBE_COVERAGE + sqlite3VdbeGetLastOp(p)->iSrcLine = 0; /* Erase VdbeCoverage() macros */ +#endif + p->nOp--; + }else{ + sqlite3VdbeChangeP2(p, addr, p->nOp); } } -static void vdbeFreeOpArray(sqlite3 *, Op *, int); + +/* +** If the input FuncDef structure is ephemeral, then free it. If +** the FuncDef is not ephemeral, then do nothing. +*/ +static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef){ + assert( db!=0 ); + if( (pDef->funcFlags & SQLITE_FUNC_EPHEM)!=0 ){ + sqlite3DbNNFreeNN(db, pDef); + } +} /* ** Delete a P4 value if necessary. */ static SQLITE_NOINLINE void freeP4Mem(sqlite3 *db, Mem *p){ if( p->szMalloc ) sqlite3DbFree(db, p->zMalloc); - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } static SQLITE_NOINLINE void freeP4FuncCtx(sqlite3 *db, sqlite3_context *p){ + assert( db!=0 ); freeEphemeralFunction(db, p->pFunc); - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } static void freeP4(sqlite3 *db, int p4type, void *p4){ assert( db ); @@ -75788,9 +85076,8 @@ static void freeP4(sqlite3 *db, int p4type, void *p4){ case P4_REAL: case P4_INT64: case P4_DYNAMIC: - case P4_DYNBLOB: case P4_INTARRAY: { - sqlite3DbFree(db, p4); + if( p4 ) sqlite3DbNNFreeNN(db, p4); break; } case P4_KEYINFO: { @@ -75824,19 +85111,23 @@ static void freeP4(sqlite3 *db, int p4type, void *p4){ /* ** Free the space allocated for aOp and any p4 values allocated for the -** opcodes contained within. If aOp is not NULL it is assumed to contain -** nOp entries. +** opcodes contained within. If aOp is not NULL it is assumed to contain +** nOp entries. */ static void vdbeFreeOpArray(sqlite3 *db, Op *aOp, int nOp){ + assert( nOp>=0 ); + assert( db!=0 ); if( aOp ){ - Op *pOp; - for(pOp=&aOp[nOp-1]; pOp>=aOp; pOp--){ + Op *pOp = &aOp[nOp-1]; + while(1){ /* Exit via break */ if( pOp->p4type <= P4_FREE_IF_LE ) freeP4(db, pOp->p4type, pOp->p4.p); #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS sqlite3DbFree(db, pOp->zComment); -#endif +#endif + if( pOp==aOp ) break; + pOp--; } - sqlite3DbFreeNN(db, aOp); + sqlite3DbNNFreeNN(db, aOp); } } @@ -75850,6 +85141,13 @@ SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *pVdbe, SubProgram *p){ pVdbe->pProgram = p; } +/* +** Return true if the given Vdbe has any SubPrograms. +*/ +SQLITE_PRIVATE int sqlite3VdbeHasSubProgram(Vdbe *pVdbe){ + return pVdbe->pProgram!=0; +} + /* ** Change the opcode at addr into OP_Noop */ @@ -75877,6 +85175,40 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){ } } +#ifdef SQLITE_DEBUG +/* +** Generate an OP_ReleaseReg opcode to indicate that a range of +** registers, except any identified by mask, are no longer in use. +*/ +SQLITE_PRIVATE void sqlite3VdbeReleaseRegisters( + Parse *pParse, /* Parsing context */ + int iFirst, /* Index of first register to be released */ + int N, /* Number of registers to release */ + u32 mask, /* Mask of registers to NOT release */ + int bUndefine /* If true, mark registers as undefined */ +){ + if( N==0 || OptimizationDisabled(pParse->db, SQLITE_ReleaseReg) ) return; + assert( pParse->pVdbe ); + assert( iFirst>=1 ); + assert( iFirst+N-1<=pParse->nMem ); + if( N<=31 && mask!=0 ){ + while( N>0 && (mask&1)!=0 ){ + mask >>= 1; + iFirst++; + N--; + } + while( N>0 && N<=32 && (mask & MASKBIT32(N-1))!=0 ){ + mask &= ~MASKBIT32(N-1); + N--; + } + } + if( N>0 ){ + sqlite3VdbeAddOp3(pParse->pVdbe, OP_ReleaseReg, iFirst, N, *(int*)&mask); + if( bUndefine ) sqlite3VdbeChangeP5(pParse->pVdbe, 1); + } +} +#endif /* SQLITE_DEBUG */ + /* ** Change the value of the P4 operand for a specific instruction. ** This routine is useful when a large program is loaded from a @@ -75887,7 +85219,7 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){ ** the string is made into memory obtained from sqlite3_malloc(). ** A value of n==0 means copy bytes of zP4 up to and including the ** first null byte. If n>0 then copy n+1 bytes of zP4. -** +** ** Other values of n (P4_STATIC, P4_COLLSEQ etc.) indicate that zP4 points ** to a string or structure that is guaranteed to exist for the lifetime of ** the Vdbe. In these cases we can just copy the pointer. @@ -75918,7 +85250,7 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int sqlite3 *db; assert( p!=0 ); db = p->db; - assert( p->magic==VDBE_MAGIC_INIT ); + assert( p->eVdbeState==VDBE_INIT_STATE ); assert( p->aOp!=0 || db->mallocFailed ); if( db->mallocFailed ){ if( n!=P4_VTAB ) freeP4(db, n, (void*)*(char**)&zP4); @@ -75948,7 +85280,7 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int } /* -** Change the P4 operand of the most recently coded instruction +** Change the P4 operand of the most recently coded instruction ** to the value defined by the arguments. This is a high-speed ** version of sqlite3VdbeChangeP4(). ** @@ -75963,7 +85295,7 @@ SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe *p, void *pP4, int n){ if( p->db->mallocFailed ){ freeP4(p->db, n, pP4); }else{ - assert( pP4!=0 ); + assert( pP4!=0 || n==P4_DYNAMIC ); assert( p->nOp>0 ); pOp = &p->aOp[p->nOp-1]; assert( pOp->p4type==P4_NOTUSED ); @@ -75994,7 +85326,7 @@ SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse *pParse, Index *pIdx){ */ static void vdbeVComment(Vdbe *p, const char *zFormat, va_list ap){ assert( p->nOp>0 || p->aOp==0 ); - assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed ); + assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->pParse->nErr>0 ); if( p->nOp ){ assert( p->aOp ); sqlite3DbFree(p->db, p->aOp[p->nOp-1].zComment); @@ -76025,19 +85357,19 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){ ** Set the value if the iSrcLine field for the previously coded instruction. */ SQLITE_PRIVATE void sqlite3VdbeSetLineNumber(Vdbe *v, int iLine){ - sqlite3VdbeGetOp(v,-1)->iSrcLine = iLine; + sqlite3VdbeGetLastOp(v)->iSrcLine = iLine; } #endif /* SQLITE_VDBE_COVERAGE */ /* -** Return the opcode for a given address. If the address is -1, then -** return the most recently inserted opcode. +** Return the opcode for a given address. The address must be non-negative. +** See sqlite3VdbeGetLastOp() to get the most recently added opcode. ** ** If a memory allocation error has occurred prior to the calling of this ** routine, then a pointer to a dummy VdbeOp will be returned. That opcode ** is readable but not writable, though it is cast to a writable value. ** The return of a dummy opcode allows the call to continue functioning -** after an OOM fault without having to check to see if the return from +** after an OOM fault without having to check to see if the return from ** this routine is a valid pointer. But because the dummy.opcode is 0, ** dummy will never be written to. This is verified by code inspection and ** by running with Valgrind. @@ -76046,10 +85378,7 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){ /* C89 specifies that the constant "dummy" will be initialized to all ** zeros, which is correct. MSVC generates a warning, nevertheless. */ static VdbeOp dummy; /* Ignore the MSVC warning about no initializer */ - assert( p->magic==VDBE_MAGIC_INIT ); - if( addr<0 ){ - addr = p->nOp - 1; - } + assert( p->eVdbeState==VDBE_INIT_STATE ); assert( (addr>=0 && addrnOp) || p->db->mallocFailed ); if( p->db->mallocFailed ){ return (VdbeOp*)&dummy; @@ -76058,6 +85387,12 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){ } } +/* Return the most recently added opcode +*/ +SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetLastOp(Vdbe *p){ + return sqlite3VdbeGetOp(p, p->nOp - 1); +} + #if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) /* ** Return an integer value for one of the parameters to the opcode pOp @@ -76084,78 +85419,90 @@ static int translateP(char c, const Op *pOp){ ** "PX@PY+1" -> "r[X..X+Y]" or "r[x]" if y is 0 ** "PY..PY" -> "r[X..Y]" or "r[x]" if y<=x */ -static int displayComment( +SQLITE_PRIVATE char *sqlite3VdbeDisplayComment( + sqlite3 *db, /* Optional - Oom error reporting only */ const Op *pOp, /* The opcode to be commented */ - const char *zP4, /* Previously obtained value for P4 */ - char *zTemp, /* Write result here */ - int nTemp /* Space available in zTemp[] */ + const char *zP4 /* Previously obtained value for P4 */ ){ const char *zOpName; const char *zSynopsis; int nOpName; - int ii, jj; + int ii; char zAlt[50]; + StrAccum x; + + sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH); zOpName = sqlite3OpcodeName(pOp->opcode); nOpName = sqlite3Strlen30(zOpName); if( zOpName[nOpName+1] ){ int seenCom = 0; char c; - zSynopsis = zOpName += nOpName + 1; + zSynopsis = zOpName + nOpName + 1; if( strncmp(zSynopsis,"IF ",3)==0 ){ - if( pOp->p5 & SQLITE_STOREP2 ){ - sqlite3_snprintf(sizeof(zAlt), zAlt, "r[P2] = (%s)", zSynopsis+3); - }else{ - sqlite3_snprintf(sizeof(zAlt), zAlt, "if %s goto P2", zSynopsis+3); - } + sqlite3_snprintf(sizeof(zAlt), zAlt, "if %s goto P2", zSynopsis+3); zSynopsis = zAlt; } - for(ii=jj=0; jjzComment); - seenCom = 1; + if( pOp->zComment && pOp->zComment[0] ){ + sqlite3_str_appendall(&x, pOp->zComment); + seenCom = 1; + break; + } }else{ int v1 = translateP(c, pOp); int v2; - sqlite3_snprintf(nTemp-jj, zTemp+jj, "%d", v1); if( strncmp(zSynopsis+ii+1, "@P", 2)==0 ){ ii += 3; - jj += sqlite3Strlen30(zTemp+jj); v2 = translateP(zSynopsis[ii], pOp); if( strncmp(zSynopsis+ii+1,"+1",2)==0 ){ ii += 2; v2++; } - if( v2>1 ){ - sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1); + if( v2<2 ){ + sqlite3_str_appendf(&x, "%d", v1); + }else{ + sqlite3_str_appendf(&x, "%d..%d", v1, v1+v2-1); + } + }else if( strncmp(zSynopsis+ii+1, "@NP", 3)==0 ){ + sqlite3_context *pCtx = pOp->p4.pCtx; + if( pOp->p4type!=P4_FUNCCTX || pCtx->argc==1 ){ + sqlite3_str_appendf(&x, "%d", v1); + }else if( pCtx->argc>1 ){ + sqlite3_str_appendf(&x, "%d..%d", v1, v1+pCtx->argc-1); + }else if( x.accError==0 ){ + assert( x.nChar>2 ); + x.nChar -= 2; + ii++; + } + ii += 3; + }else{ + sqlite3_str_appendf(&x, "%d", v1); + if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){ + ii += 4; } - }else if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){ - ii += 4; } } - jj += sqlite3Strlen30(zTemp+jj); }else{ - zTemp[jj++] = c; + sqlite3_str_appendchar(&x, 1, c); } } - if( !seenCom && jjzComment ){ - sqlite3_snprintf(nTemp-jj, zTemp+jj, "; %s", pOp->zComment); - jj += sqlite3Strlen30(zTemp+jj); + if( !seenCom && pOp->zComment ){ + sqlite3_str_appendf(&x, "; %s", pOp->zComment); } - if( jjzComment ){ - sqlite3_snprintf(nTemp, zTemp, "%s", pOp->zComment); - jj = sqlite3Strlen30(zTemp); - }else{ - zTemp[0] = 0; - jj = 0; + sqlite3_str_appendall(&x, pOp->zComment); } - return jj; + if( (x.accError & SQLITE_NOMEM)!=0 && db!=0 ){ + sqlite3OomFault(db); + } + return sqlite3StrAccumFinish(&x); } -#endif /* SQLITE_DEBUG */ +#endif /* SQLITE_ENABLE_EXPLAIN_COMMENTS */ #if VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS) /* @@ -76166,6 +85513,7 @@ static void displayP4Expr(StrAccum *p, Expr *pExpr){ const char *zOp = 0; switch( pExpr->op ){ case TK_STRING: + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3_str_appendf(p, "%Q", pExpr->u.zToken); break; case TK_INTEGER: @@ -76236,23 +85584,25 @@ static void displayP4Expr(StrAccum *p, Expr *pExpr){ ** Compute a string that describes the P4 parameter for an opcode. ** Use zTemp for any required temporary buffer space. */ -static char *displayP4(Op *pOp, char *zTemp, int nTemp){ - char *zP4 = zTemp; +SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3 *db, Op *pOp){ + char *zP4 = 0; StrAccum x; - assert( nTemp>=20 ); - sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0); + + sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH); switch( pOp->p4type ){ case P4_KEYINFO: { int j; KeyInfo *pKeyInfo = pOp->p4.pKeyInfo; - assert( pKeyInfo->aSortOrder!=0 ); + assert( pKeyInfo->aSortFlags!=0 ); sqlite3_str_appendf(&x, "k(%d", pKeyInfo->nKeyField); for(j=0; jnKeyField; j++){ CollSeq *pColl = pKeyInfo->aColl[j]; const char *zColl = pColl ? pColl->zName : ""; if( strcmp(zColl, "BINARY")==0 ) zColl = "B"; - sqlite3_str_appendf(&x, ",%s%s", - pKeyInfo->aSortOrder[j] ? "-" : "", zColl); + sqlite3_str_appendf(&x, ",%s%s%s", + (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_DESC) ? "-" : "", + (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_BIGNULL)? "N." : "", + zColl); } sqlite3_str_append(&x, ")", 1); break; @@ -76264,8 +85614,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ } #endif case P4_COLLSEQ: { + static const char *const encnames[] = {"?", "8", "16LE", "16BE"}; CollSeq *pColl = pOp->p4.pColl; - sqlite3_str_appendf(&x, "(%.20s)", pColl->zName); + assert( pColl->enc<4 ); + sqlite3_str_appendf(&x, "%.18s-%s", pColl->zName, + encnames[pColl->enc]); break; } case P4_FUNCDEF: { @@ -76273,13 +85626,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg); break; } -#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) case P4_FUNCCTX: { FuncDef *pDef = pOp->p4.pCtx->pFunc; sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg); break; } -#endif case P4_INT64: { sqlite3_str_appendf(&x, "%lld", *pOp->p4.pI64); break; @@ -76296,7 +85647,7 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ Mem *pMem = pOp->p4.pMem; if( pMem->flags & MEM_Str ){ zP4 = pMem->z; - }else if( pMem->flags & MEM_Int ){ + }else if( pMem->flags & (MEM_Int|MEM_IntReal) ){ sqlite3_str_appendf(&x, "%lld", pMem->u.i); }else if( pMem->flags & MEM_Real ){ sqlite3_str_appendf(&x, "%.16g", pMem->u.r); @@ -76316,41 +85667,33 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ } #endif case P4_INTARRAY: { - int i; - int *ai = pOp->p4.ai; - int n = ai[0]; /* The first element of an INTARRAY is always the + u32 i; + u32 *ai = pOp->p4.ai; + u32 n = ai[0]; /* The first element of an INTARRAY is always the ** count of the number of elements to follow */ for(i=1; i<=n; i++){ - sqlite3_str_appendf(&x, ",%d", ai[i]); + sqlite3_str_appendf(&x, "%c%u", (i==1 ? '[' : ','), ai[i]); } - zTemp[0] = '['; sqlite3_str_append(&x, "]", 1); break; } case P4_SUBPROGRAM: { - sqlite3_str_appendf(&x, "program"); - break; - } - case P4_DYNBLOB: - case P4_ADVANCE: { - zTemp[0] = 0; + zP4 = "program"; break; } case P4_TABLE: { - sqlite3_str_appendf(&x, "%s", pOp->p4.pTab->zName); + zP4 = pOp->p4.pTab->zName; break; } default: { zP4 = pOp->p4.z; - if( zP4==0 ){ - zP4 = zTemp; - zTemp[0] = 0; - } } } - sqlite3StrAccumFinish(&x); - assert( zP4!=0 ); - return zP4; + if( zP4 ) sqlite3_str_appendall(&x, zP4); + if( (x.accError & SQLITE_NOMEM)!=0 ){ + sqlite3OomFault(db); + } + return sqlite3StrAccumFinish(&x); } #endif /* VDBE_DISPLAY_P4 */ @@ -76381,13 +85724,13 @@ SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){ ** ** If SQLite is not threadsafe but does support shared-cache mode, then ** sqlite3BtreeEnter() is invoked to set the BtShared.db variables -** of all of BtShared structures accessible via the database handle +** of all of BtShared structures accessible via the database handle ** associated with the VM. ** ** If SQLite is not threadsafe and does not support shared-cache mode, this ** function is a no-op. ** -** The p->btreeMask field is a bitmask of all btrees that the prepared +** The p->btreeMask field is a bitmask of all btrees that the prepared ** statement p will ever use. Let N be the number of bits in p->btreeMask ** corresponding to btrees that use shared cache. Then the runtime of ** this routine is N*N. But as N is rarely more than 1, this should not @@ -76438,46 +85781,71 @@ SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){ /* ** Print a single opcode. This routine is used for debugging only. */ -SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, Op *pOp){ +SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, VdbeOp *pOp){ char *zP4; - char zPtr[50]; - char zCom[100]; + char *zCom; + sqlite3 dummyDb; static const char *zFormat1 = "%4d %-13s %4d %4d %4d %-13s %.2X %s\n"; if( pOut==0 ) pOut = stdout; - zP4 = displayP4(pOp, zPtr, sizeof(zPtr)); + sqlite3BeginBenignMalloc(); + dummyDb.mallocFailed = 1; + zP4 = sqlite3VdbeDisplayP4(&dummyDb, pOp); #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - displayComment(pOp, zP4, zCom, sizeof(zCom)); + zCom = sqlite3VdbeDisplayComment(0, pOp, zP4); #else - zCom[0] = 0; + zCom = 0; #endif /* NB: The sqlite3OpcodeName() function is implemented by code created ** by the mkopcodeh.awk and mkopcodec.awk scripts which extract the ** information from the vdbe.c source text */ - fprintf(pOut, zFormat1, pc, - sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3, zP4, pOp->p5, - zCom + fprintf(pOut, zFormat1, pc, + sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3, + zP4 ? zP4 : "", pOp->p5, + zCom ? zCom : "" ); fflush(pOut); + sqlite3_free(zP4); + sqlite3_free(zCom); + sqlite3EndBenignMalloc(); } #endif /* ** Initialize an array of N Mem element. +** +** This is a high-runner, so only those fields that really do need to +** be initialized are set. The Mem structure is organized so that +** the fields that get initialized are nearby and hopefully on the same +** cache line. +** +** Mem.flags = flags +** Mem.db = db +** Mem.szMalloc = 0 +** +** All other fields of Mem can safely remain uninitialized for now. They +** will be initialized before use. */ static void initMemArray(Mem *p, int N, sqlite3 *db, u16 flags){ - while( (N--)>0 ){ - p->db = db; - p->flags = flags; - p->szMalloc = 0; + if( N>0 ){ + do{ + p->flags = flags; + p->db = db; + p->szMalloc = 0; #ifdef SQLITE_DEBUG - p->pScopyFrom = 0; + p->pScopyFrom = 0; #endif - p++; + p++; + }while( (--N)>0 ); } } /* -** Release an array of N Mem elements +** Release auxiliary memory held in an array of N Mem elements. +** +** After this routine returns, all Mem elements in the array will still +** be valid. Those Mem elements that were not holding auxiliary resources +** will be unchanged. Mem elements which had something freed will be +** set to MEM_Undefined. */ static void releaseMemArray(Mem *p, int N){ if( p && N ){ @@ -76494,33 +85862,181 @@ static void releaseMemArray(Mem *p, int N){ assert( sqlite3VdbeCheckMemInvariants(p) ); /* This block is really an inlined version of sqlite3VdbeMemRelease() - ** that takes advantage of the fact that the memory cell value is + ** that takes advantage of the fact that the memory cell value is ** being set to NULL after releasing any dynamic resources. ** - ** The justification for duplicating code is that according to - ** callgrind, this causes a certain test case to hit the CPU 4.7 - ** percent less (x86 linux, gcc version 4.1.2, -O6) than if + ** The justification for duplicating code is that according to + ** callgrind, this causes a certain test case to hit the CPU 4.7 + ** percent less (x86 linux, gcc version 4.1.2, -O6) than if ** sqlite3MemRelease() were called from here. With -O2, this jumps - ** to 6.6 percent. The test case is inserting 1000 rows into a table - ** with no indexes using a single prepared INSERT statement, bind() + ** to 6.6 percent. The test case is inserting 1000 rows into a table + ** with no indexes using a single prepared INSERT statement, bind() ** and reset(). Inserts are grouped into a transaction. */ testcase( p->flags & MEM_Agg ); testcase( p->flags & MEM_Dyn ); - testcase( p->flags & MEM_Frame ); - testcase( p->flags & MEM_RowSet ); - if( p->flags&(MEM_Agg|MEM_Dyn|MEM_Frame|MEM_RowSet) ){ + if( p->flags&(MEM_Agg|MEM_Dyn) ){ + testcase( (p->flags & MEM_Dyn)!=0 && p->xDel==sqlite3VdbeFrameMemDel ); sqlite3VdbeMemRelease(p); + p->flags = MEM_Undefined; }else if( p->szMalloc ){ - sqlite3DbFreeNN(db, p->zMalloc); + sqlite3DbNNFreeNN(db, p->zMalloc); p->szMalloc = 0; + p->flags = MEM_Undefined; } - - p->flags = MEM_Undefined; +#ifdef SQLITE_DEBUG + else{ + p->flags = MEM_Undefined; + } +#endif }while( (++p)iFrameMagic!=SQLITE_FRAME_MAGIC ) return 0; + return 1; +} +#endif + + +/* +** This is a destructor on a Mem object (which is really an sqlite3_value) +** that deletes the Frame object that is attached to it as a blob. +** +** This routine does not delete the Frame right away. It merely adds the +** frame to a list of frames to be deleted when the Vdbe halts. +*/ +SQLITE_PRIVATE void sqlite3VdbeFrameMemDel(void *pArg){ + VdbeFrame *pFrame = (VdbeFrame*)pArg; + assert( sqlite3VdbeFrameIsValid(pFrame) ); + pFrame->pParent = pFrame->v->pDelFrame; + pFrame->v->pDelFrame = pFrame; +} + +#if defined(SQLITE_ENABLE_BYTECODE_VTAB) || !defined(SQLITE_OMIT_EXPLAIN) +/* +** Locate the next opcode to be displayed in EXPLAIN or EXPLAIN +** QUERY PLAN output. +** +** Return SQLITE_ROW on success. Return SQLITE_DONE if there are no +** more opcodes to be displayed. +*/ +SQLITE_PRIVATE int sqlite3VdbeNextOpcode( + Vdbe *p, /* The statement being explained */ + Mem *pSub, /* Storage for keeping track of subprogram nesting */ + int eMode, /* 0: normal. 1: EQP. 2: TablesUsed */ + int *piPc, /* IN/OUT: Current rowid. Overwritten with next rowid */ + int *piAddr, /* OUT: Write index into (*paOp)[] here */ + Op **paOp /* OUT: Write the opcode array here */ +){ + int nRow; /* Stop when row count reaches this */ + int nSub = 0; /* Number of sub-vdbes seen so far */ + SubProgram **apSub = 0; /* Array of sub-vdbes */ + int i; /* Next instruction address */ + int rc = SQLITE_OK; /* Result code */ + Op *aOp = 0; /* Opcode array */ + int iPc; /* Rowid. Copy of value in *piPc */ + + /* When the number of output rows reaches nRow, that means the + ** listing has finished and sqlite3_step() should return SQLITE_DONE. + ** nRow is the sum of the number of rows in the main program, plus + ** the sum of the number of rows in all trigger subprograms encountered + ** so far. The nRow value will increase as new trigger subprograms are + ** encountered, but p->pc will eventually catch up to nRow. + */ + nRow = p->nOp; + if( pSub!=0 ){ + if( pSub->flags&MEM_Blob ){ + /* pSub is initiallly NULL. It is initialized to a BLOB by + ** the P4_SUBPROGRAM processing logic below */ + nSub = pSub->n/sizeof(Vdbe*); + apSub = (SubProgram **)pSub->z; + } + for(i=0; inOp; + } + } + iPc = *piPc; + while(1){ /* Loop exits via break */ + i = iPc++; + if( i>=nRow ){ + p->rc = SQLITE_OK; + rc = SQLITE_DONE; + break; + } + if( inOp ){ + /* The rowid is small enough that we are still in the + ** main program. */ + aOp = p->aOp; + }else{ + /* We are currently listing subprograms. Figure out which one and + ** pick up the appropriate opcode. */ + int j; + i -= p->nOp; + assert( apSub!=0 ); + assert( nSub>0 ); + for(j=0; i>=apSub[j]->nOp; j++){ + i -= apSub[j]->nOp; + assert( inOp || j+1aOp; + } + + /* When an OP_Program opcode is encounter (the only opcode that has + ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms + ** kept in p->aMem[9].z to hold the new program - assuming this subprogram + ** has not already been seen. + */ + if( pSub!=0 && aOp[i].p4type==P4_SUBPROGRAM ){ + int nByte = (nSub+1)*sizeof(SubProgram*); + int j; + for(j=0; jrc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0); + if( p->rc!=SQLITE_OK ){ + rc = SQLITE_ERROR; + break; + } + apSub = (SubProgram **)pSub->z; + apSub[nSub++] = aOp[i].p4.pProgram; + MemSetTypeFlag(pSub, MEM_Blob); + pSub->n = nSub*sizeof(SubProgram*); + nRow += aOp[i].p4.pProgram->nOp; + } + } + if( eMode==0 ) break; +#ifdef SQLITE_ENABLE_BYTECODE_VTAB + if( eMode==2 ){ + Op *pOp = aOp + i; + if( pOp->opcode==OP_OpenRead ) break; + if( pOp->opcode==OP_OpenWrite && (pOp->p5 & OPFLAG_P2ISREG)==0 ) break; + if( pOp->opcode==OP_ReopenIdx ) break; + }else +#endif + { + assert( eMode==1 ); + if( aOp[i].opcode==OP_Explain ) break; + if( aOp[i].opcode==OP_Init && iPc>1 ) break; + } + } + *piPc = iPc; + *piAddr = i; + *paOp = aOp; + return rc; +} +#endif /* SQLITE_ENABLE_BYTECODE_VTAB || !SQLITE_OMIT_EXPLAIN */ + + /* ** Delete a VdbeFrame object and its contents. VdbeFrame objects are ** allocated by the OP_Program opcode in sqlite3VdbeExec(). @@ -76529,8 +86045,9 @@ SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame *p){ int i; Mem *aMem = VdbeFrameMem(p); VdbeCursor **apCsr = (VdbeCursor **)&aMem[p->nChildMem]; + assert( sqlite3VdbeFrameIsValid(p) ); for(i=0; inChildCsr; i++){ - sqlite3VdbeFreeCursor(p->v, apCsr[i]); + if( apCsr[i] ) sqlite3VdbeFreeCursorNN(p->v, apCsr[i]); } releaseMemArray(aMem, p->nChildMem); sqlite3VdbeDeleteAuxData(p->v->db, &p->pAuxData, -1, 0); @@ -76559,19 +86076,17 @@ SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame *p){ SQLITE_PRIVATE int sqlite3VdbeList( Vdbe *p /* The VDBE */ ){ - int nRow; /* Stop when row count reaches this */ - int nSub = 0; /* Number of sub-vdbes seen so far */ - SubProgram **apSub = 0; /* Array of sub-vdbes */ Mem *pSub = 0; /* Memory cell hold array of subprogs */ sqlite3 *db = p->db; /* The database connection */ int i; /* Loop counter */ int rc = SQLITE_OK; /* Return code */ Mem *pMem = &p->aMem[1]; /* First Mem of result set */ int bListSubprogs = (p->explain==1 || (db->flags & SQLITE_TriggerEQP)!=0); - Op *pOp = 0; + Op *aOp; /* Array of opcodes */ + Op *pOp; /* Current opcode */ assert( p->explain ); - assert( p->magic==VDBE_MAGIC_RUN ); + assert( p->eVdbeState==VDBE_RUN_STATE ); assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY || p->rc==SQLITE_NOMEM ); /* Even though this opcode does not use dynamic strings for @@ -76579,7 +86094,6 @@ SQLITE_PRIVATE int sqlite3VdbeList( ** sqlite3_column_text16(), causing a translation to UTF-16 encoding. */ releaseMemArray(pMem, 8); - p->pResultSet = 0; if( p->rc==SQLITE_NOMEM ){ /* This happens if a malloc() inside a call to sqlite3_column_text() or @@ -76588,14 +86102,6 @@ SQLITE_PRIVATE int sqlite3VdbeList( return SQLITE_ERROR; } - /* When the number of output rows reaches nRow, that means the - ** listing has finished and sqlite3_step() should return SQLITE_DONE. - ** nRow is the sum of the number of rows in the main program, plus - ** the sum of the number of rows in all trigger subprograms encountered - ** so far. The nRow value will increase as new trigger subprograms are - ** encountered, but p->pc will eventually catch up to nRow. - */ - nRow = p->nOp; if( bListSubprogs ){ /* The first 8 memory cells are used for the result set. So we will ** commandeer the 9th cell to use as storage for an array of pointers @@ -76603,144 +86109,55 @@ SQLITE_PRIVATE int sqlite3VdbeList( ** cells. */ assert( p->nMem>9 ); pSub = &p->aMem[9]; - if( pSub->flags&MEM_Blob ){ - /* On the first call to sqlite3_step(), pSub will hold a NULL. It is - ** initialized to a BLOB by the P4_SUBPROGRAM processing logic below */ - nSub = pSub->n/sizeof(Vdbe*); - apSub = (SubProgram **)pSub->z; - } - for(i=0; inOp; - } + }else{ + pSub = 0; } - while(1){ /* Loop exits via break */ - i = p->pc++; - if( i>=nRow ){ - p->rc = SQLITE_OK; - rc = SQLITE_DONE; - break; - } - if( inOp ){ - /* The output line number is small enough that we are still in the - ** main program. */ - pOp = &p->aOp[i]; - }else{ - /* We are currently listing subprograms. Figure out which one and - ** pick up the appropriate opcode. */ - int j; - i -= p->nOp; - for(j=0; i>=apSub[j]->nOp; j++){ - i -= apSub[j]->nOp; - } - pOp = &apSub[j]->aOp[i]; - } - - /* When an OP_Program opcode is encounter (the only opcode that has - ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms - ** kept in p->aMem[9].z to hold the new program - assuming this subprogram - ** has not already been seen. - */ - if( bListSubprogs && pOp->p4type==P4_SUBPROGRAM ){ - int nByte = (nSub+1)*sizeof(SubProgram*); - int j; - for(j=0; jp4.pProgram ) break; - } - if( j==nSub ){ - p->rc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0); - if( p->rc!=SQLITE_OK ){ - rc = SQLITE_ERROR; - break; - } - apSub = (SubProgram **)pSub->z; - apSub[nSub++] = pOp->p4.pProgram; - pSub->flags |= MEM_Blob; - pSub->n = nSub*sizeof(SubProgram*); - nRow += pOp->p4.pProgram->nOp; - } - } - if( p->explain<2 ) break; - if( pOp->opcode==OP_Explain ) break; - if( pOp->opcode==OP_Init && p->pc>1 ) break; - } + /* Figure out which opcode is next to display */ + rc = sqlite3VdbeNextOpcode(p, pSub, p->explain==2, &p->pc, &i, &aOp); if( rc==SQLITE_OK ){ - if( db->u1.isInterrupted ){ + pOp = aOp + i; + if( AtomicLoad(&db->u1.isInterrupted) ){ p->rc = SQLITE_INTERRUPT; rc = SQLITE_ERROR; sqlite3VdbeError(p, sqlite3ErrStr(p->rc)); }else{ - char *zP4; - if( p->explain==1 ){ - pMem->flags = MEM_Int; - pMem->u.i = i; /* Program counter */ - pMem++; - - pMem->flags = MEM_Static|MEM_Str|MEM_Term; - pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */ - assert( pMem->z!=0 ); - pMem->n = sqlite3Strlen30(pMem->z); - pMem->enc = SQLITE_UTF8; - pMem++; - } - - pMem->flags = MEM_Int; - pMem->u.i = pOp->p1; /* P1 */ - pMem++; - - pMem->flags = MEM_Int; - pMem->u.i = pOp->p2; /* P2 */ - pMem++; - - pMem->flags = MEM_Int; - pMem->u.i = pOp->p3; /* P3 */ - pMem++; - - if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */ - assert( p->db->mallocFailed ); - return SQLITE_ERROR; - } - pMem->flags = MEM_Str|MEM_Term; - zP4 = displayP4(pOp, pMem->z, pMem->szMalloc); - if( zP4!=pMem->z ){ - pMem->n = 0; - sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0); + char *zP4 = sqlite3VdbeDisplayP4(db, pOp); + if( p->explain==2 ){ + sqlite3VdbeMemSetInt64(pMem, pOp->p1); + sqlite3VdbeMemSetInt64(pMem+1, pOp->p2); + sqlite3VdbeMemSetInt64(pMem+2, pOp->p3); + sqlite3VdbeMemSetStr(pMem+3, zP4, -1, SQLITE_UTF8, sqlite3_free); + assert( p->nResColumn==4 ); }else{ - assert( pMem->z!=0 ); - pMem->n = sqlite3Strlen30(pMem->z); - pMem->enc = SQLITE_UTF8; - } - pMem++; - - if( p->explain==1 ){ - if( sqlite3VdbeMemClearAndResize(pMem, 4) ){ - assert( p->db->mallocFailed ); - return SQLITE_ERROR; - } - pMem->flags = MEM_Str|MEM_Term; - pMem->n = 2; - sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5); /* P5 */ - pMem->enc = SQLITE_UTF8; - pMem++; - + sqlite3VdbeMemSetInt64(pMem+0, i); + sqlite3VdbeMemSetStr(pMem+1, (char*)sqlite3OpcodeName(pOp->opcode), + -1, SQLITE_UTF8, SQLITE_STATIC); + sqlite3VdbeMemSetInt64(pMem+2, pOp->p1); + sqlite3VdbeMemSetInt64(pMem+3, pOp->p2); + sqlite3VdbeMemSetInt64(pMem+4, pOp->p3); + /* pMem+5 for p4 is done last */ + sqlite3VdbeMemSetInt64(pMem+6, pOp->p5); #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - if( sqlite3VdbeMemClearAndResize(pMem, 500) ){ - assert( p->db->mallocFailed ); - return SQLITE_ERROR; + { + char *zCom = sqlite3VdbeDisplayComment(db, pOp, zP4); + sqlite3VdbeMemSetStr(pMem+7, zCom, -1, SQLITE_UTF8, sqlite3_free); } - pMem->flags = MEM_Str|MEM_Term; - pMem->n = displayComment(pOp, zP4, pMem->z, 500); - pMem->enc = SQLITE_UTF8; #else - pMem->flags = MEM_Null; /* Comment */ + sqlite3VdbeMemSetNull(pMem+7); #endif + sqlite3VdbeMemSetStr(pMem+5, zP4, -1, SQLITE_UTF8, sqlite3_free); + assert( p->nResColumn==8 ); + } + p->pResultRow = pMem; + if( db->mallocFailed ){ + p->rc = SQLITE_NOMEM; + rc = SQLITE_ERROR; + }else{ + p->rc = SQLITE_OK; + rc = SQLITE_ROW; } - - p->nResColumn = 8 - 4*(p->explain-1); - p->pResultSet = &p->aMem[1]; - p->rc = SQLITE_OK; - rc = SQLITE_ROW; } } return rc; @@ -76801,9 +86218,9 @@ SQLITE_PRIVATE void sqlite3VdbeIOTraceSql(Vdbe *p){ ** of a ReusableSpace object by the allocSpace() routine below. */ struct ReusableSpace { - u8 *pSpace; /* Available memory */ - int nFree; /* Bytes of available memory */ - int nNeeded; /* Total bytes that could not be allocated */ + u8 *pSpace; /* Available memory */ + sqlite3_int64 nFree; /* Bytes of available memory */ + sqlite3_int64 nNeeded; /* Total bytes that could not be allocated */ }; /* Try to allocate nByte bytes of 8-byte aligned bulk memory for pBuf @@ -76823,11 +86240,11 @@ struct ReusableSpace { static void *allocSpace( struct ReusableSpace *p, /* Bulk memory available for allocation */ void *pBuf, /* Pointer to a prior allocation */ - int nByte /* Bytes of memory needed */ + sqlite3_int64 nByte /* Bytes of memory needed. */ ){ assert( EIGHT_BYTE_ALIGNMENT(p->pSpace) ); if( pBuf==0 ){ - nByte = ROUND8(nByte); + nByte = ROUND8P(nByte); if( nByte <= p->nFree ){ p->nFree -= nByte; pBuf = &p->pSpace[p->nFree]; @@ -76844,18 +86261,19 @@ static void *allocSpace( ** running it. */ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ -#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) +#if defined(SQLITE_DEBUG) int i; #endif assert( p!=0 ); - assert( p->magic==VDBE_MAGIC_INIT || p->magic==VDBE_MAGIC_RESET ); + assert( p->eVdbeState==VDBE_INIT_STATE + || p->eVdbeState==VDBE_READY_STATE + || p->eVdbeState==VDBE_HALT_STATE ); /* There should be at least one opcode. */ assert( p->nOp>0 ); - /* Set the magic to VDBE_MAGIC_RUN sooner rather than later. */ - p->magic = VDBE_MAGIC_RUN; + p->eVdbeState = VDBE_READY_STATE; #ifdef SQLITE_DEBUG for(i=0; inMem; i++){ @@ -76872,8 +86290,8 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ p->nFkConstraint = 0; #ifdef VDBE_PROFILE for(i=0; inOp; i++){ - p->aOp[i].cnt = 0; - p->aOp[i].cycles = 0; + p->aOp[i].nExec = 0; + p->aOp[i].nCycle = 0; } #endif } @@ -76883,11 +86301,11 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ ** creating the virtual machine. This involves things such ** as allocating registers and initializing the program counter. ** After the VDBE has be prepped, it can be executed by one or more -** calls to sqlite3VdbeExec(). +** calls to sqlite3VdbeExec(). ** ** This function may be called exactly once on each virtual machine. ** After this routine is called the VM has been "packaged" and is ready -** to run. After this routine is called, further calls to +** to run. After this routine is called, further calls to ** sqlite3VdbeAddOp() functions are prohibited. This routine disconnects ** the Vdbe from the Parse object that helped generate it so that the ** the Vdbe becomes an independent entity and the Parse object can be @@ -76911,15 +86329,17 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( assert( p!=0 ); assert( p->nOp>0 ); assert( pParse!=0 ); - assert( p->magic==VDBE_MAGIC_INIT ); + assert( p->eVdbeState==VDBE_INIT_STATE ); assert( pParse==p->pParse ); + p->pVList = pParse->pVList; + pParse->pVList = 0; db = p->db; assert( db->mallocFailed==0 ); nVar = pParse->nVar; nMem = pParse->nMem; nCursor = pParse->nTab; nArg = pParse->nMaxArg; - + /* Each cursor uses a memory cell. The first cursor (cursor 0) can ** use aMem[0] which is not otherwise used by the VDBE program. Allocate ** space at the end of aMem[] for cursors 1 and greater. @@ -76932,7 +86352,7 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( ** opcode array. This extra memory will be reallocated for other elements ** of the prepared statement. */ - n = ROUND8(sizeof(Op)*p->nOp); /* Bytes of opcode memory used */ + n = ROUND8P(sizeof(Op)*p->nOp); /* Bytes of opcode memory used */ x.pSpace = &((u8*)p->aOp)[n]; /* Unused opcode memory */ assert( EIGHT_BYTE_ALIGNMENT(x.pSpace) ); x.nFree = ROUNDDOWN8(pParse->szOpAlloc - n); /* Bytes of unused memory */ @@ -76941,38 +86361,39 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( resolveP2Values(p, &nArg); p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort); - if( pParse->explain && nMem<10 ){ - nMem = 10; + if( pParse->explain ){ + if( nMem<10 ) nMem = 10; + p->explain = pParse->explain; + p->nResColumn = 12 - 4*p->explain; } p->expired = 0; /* Memory for registers, parameters, cursor, etc, is allocated in one or two - ** passes. On the first pass, we try to reuse unused memory at the + ** passes. On the first pass, we try to reuse unused memory at the ** end of the opcode array. If we are unable to satisfy all memory ** requirements by reusing the opcode array tail, then the second - ** pass will fill in the remainder using a fresh memory allocation. + ** pass will fill in the remainder using a fresh memory allocation. ** ** This two-pass approach that reuses as much memory as possible from ** the leftover memory at the end of the opcode array. This can significantly ** reduce the amount of memory held by a prepared statement. */ - do { - x.nNeeded = 0; - p->aMem = allocSpace(&x, p->aMem, nMem*sizeof(Mem)); - p->aVar = allocSpace(&x, p->aVar, nVar*sizeof(Mem)); - p->apArg = allocSpace(&x, p->apArg, nArg*sizeof(Mem*)); - p->apCsr = allocSpace(&x, p->apCsr, nCursor*sizeof(VdbeCursor*)); -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - p->anExec = allocSpace(&x, p->anExec, p->nOp*sizeof(i64)); -#endif - if( x.nNeeded==0 ) break; + x.nNeeded = 0; + p->aMem = allocSpace(&x, 0, nMem*sizeof(Mem)); + p->aVar = allocSpace(&x, 0, nVar*sizeof(Mem)); + p->apArg = allocSpace(&x, 0, nArg*sizeof(Mem*)); + p->apCsr = allocSpace(&x, 0, nCursor*sizeof(VdbeCursor*)); + if( x.nNeeded ){ x.pSpace = p->pFree = sqlite3DbMallocRawNN(db, x.nNeeded); x.nFree = x.nNeeded; - }while( !db->mallocFailed ); + if( !db->mallocFailed ){ + p->aMem = allocSpace(&x, p->aMem, nMem*sizeof(Mem)); + p->aVar = allocSpace(&x, p->aVar, nVar*sizeof(Mem)); + p->apArg = allocSpace(&x, p->apArg, nArg*sizeof(Mem*)); + p->apCsr = allocSpace(&x, p->apCsr, nCursor*sizeof(VdbeCursor*)); + } + } - p->pVList = pParse->pVList; - pParse->pVList = 0; - p->explain = pParse->explain; if( db->mallocFailed ){ p->nVar = 0; p->nCursor = 0; @@ -76984,36 +86405,42 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( p->nMem = nMem; initMemArray(p->aMem, nMem, db, MEM_Undefined); memset(p->apCsr, 0, nCursor*sizeof(VdbeCursor*)); -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - memset(p->anExec, 0, p->nOp*sizeof(i64)); -#endif } sqlite3VdbeRewind(p); } /* -** Close a VDBE cursor and release all the resources that cursor +** Close a VDBE cursor and release all the resources that cursor ** happens to hold. */ SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *p, VdbeCursor *pCx){ - if( pCx==0 ){ + if( pCx ) sqlite3VdbeFreeCursorNN(p,pCx); +} +static SQLITE_NOINLINE void freeCursorWithCache(Vdbe *p, VdbeCursor *pCx){ + VdbeTxtBlbCache *pCache = pCx->pCache; + assert( pCx->colCache ); + pCx->colCache = 0; + pCx->pCache = 0; + if( pCache->pCValue ){ + sqlite3RCStrUnref(pCache->pCValue); + pCache->pCValue = 0; + } + sqlite3DbFree(p->db, pCache); + sqlite3VdbeFreeCursorNN(p, pCx); +} +SQLITE_PRIVATE void sqlite3VdbeFreeCursorNN(Vdbe *p, VdbeCursor *pCx){ + if( pCx->colCache ){ + freeCursorWithCache(p, pCx); return; } - assert( pCx->pBtx==0 || pCx->eCurType==CURTYPE_BTREE ); switch( pCx->eCurType ){ case CURTYPE_SORTER: { sqlite3VdbeSorterClose(p->db, pCx); break; } case CURTYPE_BTREE: { - if( pCx->isEphemeral ){ - if( pCx->pBtx ) sqlite3BtreeClose(pCx->pBtx); - /* The pCx->pCursor will be close automatically, if it exists, by - ** the call above. */ - }else{ - assert( pCx->uc.pCursor!=0 ); - sqlite3BtreeCloseCursor(pCx->uc.pCursor); - } + assert( pCx->uc.pCursor!=0 ); + sqlite3BtreeCloseCursor(pCx->uc.pCursor); break; } #ifndef SQLITE_OMIT_VIRTUALTABLE @@ -77033,14 +86460,12 @@ SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *p, VdbeCursor *pCx){ ** Close all cursors in the current frame. */ static void closeCursorsInFrame(Vdbe *p){ - if( p->apCsr ){ - int i; - for(i=0; inCursor; i++){ - VdbeCursor *pC = p->apCsr[i]; - if( pC ){ - sqlite3VdbeFreeCursor(p, pC); - p->apCsr[i] = 0; - } + int i; + for(i=0; inCursor; i++){ + VdbeCursor *pC = p->apCsr[i]; + if( pC ){ + sqlite3VdbeFreeCursorNN(p, pC); + p->apCsr[i] = 0; } } } @@ -77053,9 +86478,6 @@ static void closeCursorsInFrame(Vdbe *p){ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){ Vdbe *v = pFrame->v; closeCursorsInFrame(v); -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - v->anExec = pFrame->anExec; -#endif v->aOp = pFrame->aOp; v->nOp = pFrame->nOp; v->aMem = pFrame->aMem; @@ -77074,7 +86496,7 @@ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){ /* ** Close all cursors. ** -** Also release any dynamic memory held by the VM in the Vdbe.aMem memory +** Also release any dynamic memory held by the VM in the Vdbe.aMem memory ** cell array. This is necessary as the memory cell array may contain ** pointers to VdbeFrame objects, which may in turn contain pointers to ** open cursors. @@ -77089,9 +86511,7 @@ static void closeAllCursors(Vdbe *p){ } assert( p->nFrame==0 ); closeCursorsInFrame(p); - if( p->aMem ){ - releaseMemArray(p->aMem, p->nMem); - } + releaseMemArray(p->aMem, p->nMem); while( p->pDelFrame ){ VdbeFrame *pDel = p->pDelFrame; p->pDelFrame = pDel->pParent; @@ -77113,12 +86533,12 @@ SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe *p, int nResColumn){ int n; sqlite3 *db = p->db; - if( p->nResColumn ){ - releaseMemArray(p->aColName, p->nResColumn*COLNAME_N); + if( p->nResAlloc ){ + releaseMemArray(p->aColName, p->nResAlloc*COLNAME_N); sqlite3DbFree(db, p->aColName); } n = nResColumn*COLNAME_N; - p->nResColumn = (u16)nResColumn; + p->nResColumn = p->nResAlloc = (u16)nResColumn; p->aColName = (Mem*)sqlite3DbMallocRawNN(db, sizeof(Mem)*n ); if( p->aColName==0 ) return; initMemArray(p->aColName, n, db, MEM_Null); @@ -77143,14 +86563,14 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName( ){ int rc; Mem *pColName; - assert( idxnResColumn ); + assert( idxnResAlloc ); assert( vardb->mallocFailed ){ assert( !zName || xDel!=SQLITE_DYNAMIC ); return SQLITE_NOMEM_BKPT; } assert( p->aColName!=0 ); - pColName = &(p->aColName[idx+var*p->nResColumn]); + pColName = &(p->aColName[idx+var*p->nResAlloc]); rc = sqlite3VdbeMemSetStr(pColName, zName, -1, SQLITE_UTF8, xDel); assert( rc!=0 || !zName || (pColName->flags&MEM_Term)!=0 ); return rc; @@ -77160,43 +86580,43 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName( ** A read or write transaction may or may not be active on database handle ** db. If a transaction is active, commit it. If there is a ** write-transaction spanning more than one database file, this routine -** takes care of the master journal trickery. +** takes care of the super-journal trickery. */ static int vdbeCommit(sqlite3 *db, Vdbe *p){ int i; int nTrans = 0; /* Number of databases with an active write-transaction ** that are candidates for a two-phase commit using a - ** master-journal */ + ** super-journal */ int rc = SQLITE_OK; int needXcommit = 0; #ifdef SQLITE_OMIT_VIRTUALTABLE - /* With this option, sqlite3VtabSync() is defined to be simply - ** SQLITE_OK so p is not used. + /* With this option, sqlite3VtabSync() is defined to be simply + ** SQLITE_OK so p is not used. */ UNUSED_PARAMETER(p); #endif /* Before doing anything else, call the xSync() callback for any ** virtual module tables written in this transaction. This has to - ** be done before determining whether a master journal file is + ** be done before determining whether a super-journal file is ** required, as an xSync() callback may add an attached database ** to the transaction. */ rc = sqlite3VtabSync(db, p); /* This loop determines (a) if the commit hook should be invoked and - ** (b) how many database files have open write transactions, not - ** including the temp database. (b) is important because if more than - ** one database file has an open write transaction, a master journal + ** (b) how many database files have open write transactions, not + ** including the temp database. (b) is important because if more than + ** one database file has an open write transaction, a super-journal ** file is required for an atomic commit. - */ - for(i=0; rc==SQLITE_OK && inDb; i++){ + */ + for(i=0; rc==SQLITE_OK && inDb; i++){ Btree *pBt = db->aDb[i].pBt; - if( sqlite3BtreeIsInTrans(pBt) ){ - /* Whether or not a database might need a master journal depends upon + if( sqlite3BtreeTxnState(pBt)==SQLITE_TXN_WRITE ){ + /* Whether or not a database might need a super-journal depends upon ** its journal mode (among other things). This matrix determines which - ** journal modes use a master journal and which do not */ + ** journal modes use a super-journal and which do not */ static const u8 aMJNeeded[] = { /* DELETE */ 1, /* PERSIST */ 1, @@ -77212,7 +86632,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ if( db->aDb[i].safety_level!=PAGER_SYNCHRONOUS_OFF && aMJNeeded[sqlite3PagerGetJournalMode(pPager)] && sqlite3PagerIsMemdb(pPager)==0 - ){ + ){ assert( i!=1 ); nTrans++; } @@ -77234,11 +86654,11 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* The simple case - no more than one database file (not counting the ** TEMP database) has a transaction active. There is no need for the - ** master-journal. + ** super-journal. ** ** If the return value of sqlite3BtreeGetFilename() is a zero length - ** string, it means the main database is :memory: or a temp file. In - ** that case we do not support atomic multi-file commits, so use the + ** string, it means the main database is :memory: or a temp file. In + ** that case we do not support atomic multi-file commits, so use the ** simple case then too. */ if( 0==sqlite3Strlen30(sqlite3BtreeGetFilename(db->aDb[0].pBt)) @@ -77251,7 +86671,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ } } - /* Do the commit only if all databases successfully complete phase 1. + /* Do the commit only if all databases successfully complete phase 1. ** If one of the BtreeCommitPhaseOne() calls fails, this indicates an ** IO error while deleting or truncating a journal file. It is unlikely, ** but could happen. In this case abandon processing and return the error. @@ -77268,124 +86688,125 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ } /* The complex case - There is a multi-file write-transaction active. - ** This requires a master journal file to ensure the transaction is + ** This requires a super-journal file to ensure the transaction is ** committed atomically. */ #ifndef SQLITE_OMIT_DISKIO else{ sqlite3_vfs *pVfs = db->pVfs; - char *zMaster = 0; /* File-name for the master journal */ + char *zSuper = 0; /* File-name for the super-journal */ char const *zMainFile = sqlite3BtreeGetFilename(db->aDb[0].pBt); - sqlite3_file *pMaster = 0; + sqlite3_file *pSuperJrnl = 0; i64 offset = 0; int res; int retryCount = 0; int nMainFile; - /* Select a master journal file name */ + /* Select a super-journal file name */ nMainFile = sqlite3Strlen30(zMainFile); - zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz", zMainFile); - if( zMaster==0 ) return SQLITE_NOMEM_BKPT; + zSuper = sqlite3MPrintf(db, "%.4c%s%.16c", 0,zMainFile,0); + if( zSuper==0 ) return SQLITE_NOMEM_BKPT; + zSuper += 4; do { u32 iRandom; if( retryCount ){ if( retryCount>100 ){ - sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster); - sqlite3OsDelete(pVfs, zMaster, 0); + sqlite3_log(SQLITE_FULL, "MJ delete: %s", zSuper); + sqlite3OsDelete(pVfs, zSuper, 0); break; }else if( retryCount==1 ){ - sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster); + sqlite3_log(SQLITE_FULL, "MJ collide: %s", zSuper); } } retryCount++; sqlite3_randomness(sizeof(iRandom), &iRandom); - sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X", + sqlite3_snprintf(13, &zSuper[nMainFile], "-mj%06X9%02X", (iRandom>>8)&0xffffff, iRandom&0xff); - /* The antipenultimate character of the master journal name must + /* The antipenultimate character of the super-journal name must ** be "9" to avoid name collisions when using 8+3 filenames. */ - assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' ); - sqlite3FileSuffix3(zMainFile, zMaster); - rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res); + assert( zSuper[sqlite3Strlen30(zSuper)-3]=='9' ); + sqlite3FileSuffix3(zMainFile, zSuper); + rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res); }while( rc==SQLITE_OK && res ); if( rc==SQLITE_OK ){ - /* Open the master journal. */ - rc = sqlite3OsOpenMalloc(pVfs, zMaster, &pMaster, + /* Open the super-journal. */ + rc = sqlite3OsOpenMalloc(pVfs, zSuper, &pSuperJrnl, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE| - SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_MASTER_JOURNAL, 0 + SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_SUPER_JOURNAL, 0 ); } if( rc!=SQLITE_OK ){ - sqlite3DbFree(db, zMaster); + sqlite3DbFree(db, zSuper-4); return rc; } - + /* Write the name of each database file in the transaction into the new - ** master journal file. If an error occurs at this point close - ** and delete the master journal file. All the individual journal files - ** still have 'null' as the master journal pointer, so they will roll + ** super-journal file. If an error occurs at this point close + ** and delete the super-journal file. All the individual journal files + ** still have 'null' as the super-journal pointer, so they will roll ** back independently if a failure occurs. */ for(i=0; inDb; i++){ Btree *pBt = db->aDb[i].pBt; - if( sqlite3BtreeIsInTrans(pBt) ){ + if( sqlite3BtreeTxnState(pBt)==SQLITE_TXN_WRITE ){ char const *zFile = sqlite3BtreeGetJournalname(pBt); if( zFile==0 ){ continue; /* Ignore TEMP and :memory: databases */ } assert( zFile[0]!=0 ); - rc = sqlite3OsWrite(pMaster, zFile, sqlite3Strlen30(zFile)+1, offset); + rc = sqlite3OsWrite(pSuperJrnl, zFile, sqlite3Strlen30(zFile)+1,offset); offset += sqlite3Strlen30(zFile)+1; if( rc!=SQLITE_OK ){ - sqlite3OsCloseFree(pMaster); - sqlite3OsDelete(pVfs, zMaster, 0); - sqlite3DbFree(db, zMaster); + sqlite3OsCloseFree(pSuperJrnl); + sqlite3OsDelete(pVfs, zSuper, 0); + sqlite3DbFree(db, zSuper-4); return rc; } } } - /* Sync the master journal file. If the IOCAP_SEQUENTIAL device + /* Sync the super-journal file. If the IOCAP_SEQUENTIAL device ** flag is set this is not required. */ - if( 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL) - && SQLITE_OK!=(rc = sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL)) + if( 0==(sqlite3OsDeviceCharacteristics(pSuperJrnl)&SQLITE_IOCAP_SEQUENTIAL) + && SQLITE_OK!=(rc = sqlite3OsSync(pSuperJrnl, SQLITE_SYNC_NORMAL)) ){ - sqlite3OsCloseFree(pMaster); - sqlite3OsDelete(pVfs, zMaster, 0); - sqlite3DbFree(db, zMaster); + sqlite3OsCloseFree(pSuperJrnl); + sqlite3OsDelete(pVfs, zSuper, 0); + sqlite3DbFree(db, zSuper-4); return rc; } /* Sync all the db files involved in the transaction. The same call - ** sets the master journal pointer in each individual journal. If - ** an error occurs here, do not delete the master journal file. + ** sets the super-journal pointer in each individual journal. If + ** an error occurs here, do not delete the super-journal file. ** ** If the error occurs during the first call to ** sqlite3BtreeCommitPhaseOne(), then there is a chance that the - ** master journal file will be orphaned. But we cannot delete it, - ** in case the master journal file name was written into the journal + ** super-journal file will be orphaned. But we cannot delete it, + ** in case the super-journal file name was written into the journal ** file before the failure occurred. */ - for(i=0; rc==SQLITE_OK && inDb; i++){ + for(i=0; rc==SQLITE_OK && inDb; i++){ Btree *pBt = db->aDb[i].pBt; if( pBt ){ - rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster); + rc = sqlite3BtreeCommitPhaseOne(pBt, zSuper); } } - sqlite3OsCloseFree(pMaster); + sqlite3OsCloseFree(pSuperJrnl); assert( rc!=SQLITE_BUSY ); if( rc!=SQLITE_OK ){ - sqlite3DbFree(db, zMaster); + sqlite3DbFree(db, zSuper-4); return rc; } - /* Delete the master journal file. This commits the transaction. After + /* Delete the super-journal file. This commits the transaction. After ** doing this the directory is synced again before any individual ** transaction files are deleted. */ - rc = sqlite3OsDelete(pVfs, zMaster, 1); - sqlite3DbFree(db, zMaster); - zMaster = 0; + rc = sqlite3OsDelete(pVfs, zSuper, 1); + sqlite3DbFree(db, zSuper-4); + zSuper = 0; if( rc ){ return rc; } @@ -77399,7 +86820,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ */ disable_simulated_io_errors(); sqlite3BeginBenignMalloc(); - for(i=0; inDb; i++){ + for(i=0; inDb; i++){ Btree *pBt = db->aDb[i].pBt; if( pBt ){ sqlite3BtreeCommitPhaseTwo(pBt, 1); @@ -77415,7 +86836,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ return rc; } -/* +/* ** This routine checks that the sqlite3.nVdbeActive count variable ** matches the number of vdbe's in the list sqlite3.pVdbe that are ** currently active. An assertion fails if the two counts do not match. @@ -77437,7 +86858,7 @@ static void checkActiveVdbeCnt(sqlite3 *db){ if( p->readOnly==0 ) nWrite++; if( p->bIsReader ) nRead++; } - p = p->pNext; + p = p->pVNext; } assert( cnt==db->nVdbeActive ); assert( nWrite==db->nVdbeWrite ); @@ -77451,10 +86872,10 @@ static void checkActiveVdbeCnt(sqlite3 *db){ ** If the Vdbe passed as the first argument opened a statement-transaction, ** close it now. Argument eOp must be either SAVEPOINT_ROLLBACK or ** SAVEPOINT_RELEASE. If it is SAVEPOINT_ROLLBACK, then the statement -** transaction is rolled back. If eOp is SAVEPOINT_RELEASE, then the +** transaction is rolled back. If eOp is SAVEPOINT_RELEASE, then the ** statement transaction is committed. ** -** If an IO error occurs, an SQLITE_IOERR_XXX error code is returned. +** If an IO error occurs, an SQLITE_IOERR_XXX error code is returned. ** Otherwise SQLITE_OK. */ static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){ @@ -77467,7 +86888,7 @@ static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){ assert( db->nStatement>0 ); assert( p->iStatement==(db->nStatement+db->nSavepoint) ); - for(i=0; inDb; i++){ + for(i=0; inDb; i++){ int rc2 = SQLITE_OK; Btree *pBt = db->aDb[i].pBt; if( pBt ){ @@ -77494,8 +86915,8 @@ static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){ } } - /* If the statement transaction is being rolled back, also restore the - ** database handles deferred constraint counter to the value it had when + /* If the statement transaction is being rolled back, also restore the + ** database handles deferred constraint counter to the value it had when ** the statement transaction was opened. */ if( eOp==SAVEPOINT_ROLLBACK ){ db->nDeferredCons = p->nStmtDefCons; @@ -77512,25 +86933,26 @@ SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *p, int eOp){ /* -** This function is called when a transaction opened by the database -** handle associated with the VM passed as an argument is about to be +** This function is called when a transaction opened by the database +** handle associated with the VM passed as an argument is about to be ** committed. If there are outstanding deferred foreign key constraint ** violations, return SQLITE_ERROR. Otherwise, SQLITE_OK. ** -** If there are outstanding FK violations and this function returns +** If there are outstanding FK violations and this function returns ** SQLITE_ERROR, set the result of the VM to SQLITE_CONSTRAINT_FOREIGNKEY ** and write an error message to it. Then return SQLITE_ERROR. */ #ifndef SQLITE_OMIT_FOREIGN_KEY SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *p, int deferred){ sqlite3 *db = p->db; - if( (deferred && (db->nDeferredCons+db->nDeferredImmCons)>0) - || (!deferred && p->nFkConstraint>0) + if( (deferred && (db->nDeferredCons+db->nDeferredImmCons)>0) + || (!deferred && p->nFkConstraint>0) ){ p->rc = SQLITE_CONSTRAINT_FOREIGNKEY; p->errorAction = OE_Abort; sqlite3VdbeError(p, "FOREIGN KEY constraint failed"); - return SQLITE_ERROR; + if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)==0 ) return SQLITE_ERROR; + return SQLITE_CONSTRAINT_FOREIGNKEY; } return SQLITE_OK; } @@ -77541,9 +86963,9 @@ SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *p, int deferred){ ** has made changes and is in autocommit mode, then commit those ** changes. If a rollback is needed, then do the rollback. ** -** This routine is the only way to move the state of a VM from -** SQLITE_MAGIC_RUN to SQLITE_MAGIC_HALT. It is harmless to -** call this on a VM that is in the SQLITE_MAGIC_HALT state. +** This routine is the only way to move the sqlite3eOpenState of a VM from +** SQLITE_STATE_RUN to SQLITE_STATE_HALT. It is harmless to +** call this on a VM that is in the SQLITE_STATE_HALT state. ** ** Return an error code. If the commit could not complete because of ** lock contention, return SQLITE_BUSY. If SQLITE_BUSY is returned, it @@ -77555,7 +86977,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ /* This function contains the logic that determines if a statement or ** transaction will be committed or rolled back as a result of the - ** execution of this virtual machine. + ** execution of this virtual machine. ** ** If any of the following errors occur: ** @@ -77569,9 +86991,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ ** one, or the complete transaction if there is no statement transaction. */ - if( p->magic!=VDBE_MAGIC_RUN ){ - return SQLITE_OK; - } + assert( p->eVdbeState==VDBE_RUN_STATE ); if( db->mallocFailed ){ p->rc = SQLITE_NOMEM_BKPT; } @@ -77580,7 +87000,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ /* No commit or rollback needed if the program never started or if the ** SQL statement does not read or write a database file. */ - if( p->pc>=0 && p->bIsReader ){ + if( p->bIsReader ){ int mrc; /* Primary error code from p->rc */ int eStatementOp = 0; int isSpecialError; /* Set to true if a 'special' error */ @@ -77589,20 +87009,26 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ sqlite3VdbeEnter(p); /* Check for one of the special errors */ - mrc = p->rc & 0xff; - isSpecialError = mrc==SQLITE_NOMEM || mrc==SQLITE_IOERR - || mrc==SQLITE_INTERRUPT || mrc==SQLITE_FULL; + if( p->rc ){ + mrc = p->rc & 0xff; + isSpecialError = mrc==SQLITE_NOMEM + || mrc==SQLITE_IOERR + || mrc==SQLITE_INTERRUPT + || mrc==SQLITE_FULL; + }else{ + mrc = isSpecialError = 0; + } if( isSpecialError ){ - /* If the query was read-only and the error code is SQLITE_INTERRUPT, - ** no rollback is necessary. Otherwise, at least a savepoint - ** transaction must be rolled back to restore the database to a + /* If the query was read-only and the error code is SQLITE_INTERRUPT, + ** no rollback is necessary. Otherwise, at least a savepoint + ** transaction must be rolled back to restore the database to a ** consistent state. ** ** Even if the statement is read-only, it is important to perform - ** a statement or transaction rollback operation. If the error + ** a statement or transaction rollback operation. If the error ** occurred while writing to the journal, sub-journal or database ** file as part of an effort to free up cache space (see function - ** pagerStress() in pager.c), the rollback is required to restore + ** pagerStress() in pager.c), the rollback is required to restore ** the pager to a consistent state. */ if( !p->readOnly || mrc!=SQLITE_INTERRUPT ){ @@ -77621,19 +87047,19 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ } /* Check for immediate foreign key violations. */ - if( p->rc==SQLITE_OK ){ + if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){ sqlite3VdbeCheckFk(p, 0); } - - /* If the auto-commit flag is set and this is the only active writer - ** VM, then we do either a commit or rollback of the current transaction. + + /* If the auto-commit flag is set and this is the only active writer + ** VM, then we do either a commit or rollback of the current transaction. ** - ** Note: This block also runs if one of the special errors handled - ** above has occurred. + ** Note: This block also runs if one of the special errors handled + ** above has occurred. */ - if( !sqlite3VtabInSync(db) - && db->autoCommit - && db->nVdbeWrite==(p->readOnly==0) + if( !sqlite3VtabInSync(db) + && db->autoCommit + && db->nVdbeWrite==(p->readOnly==0) ){ if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){ rc = sqlite3VdbeCheckFk(p, 1); @@ -77643,10 +87069,13 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ return SQLITE_ERROR; } rc = SQLITE_CONSTRAINT_FOREIGNKEY; - }else{ - /* The auto-commit flag is true, the vdbe program was successful + }else if( db->flags & SQLITE_CorruptRdOnly ){ + rc = SQLITE_CORRUPT; + db->flags &= ~SQLITE_CorruptRdOnly; + }else{ + /* The auto-commit flag is true, the vdbe program was successful ** or hit an 'OR FAIL' constraint and there are no deferred foreign - ** key constraints to hold up the transaction. This means a commit + ** key constraints to hold up the transaction. This means a commit ** is required. */ rc = vdbeCommit(db, p); } @@ -77654,15 +87083,18 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ sqlite3VdbeLeave(p); return SQLITE_BUSY; }else if( rc!=SQLITE_OK ){ + sqlite3SystemError(db, rc); p->rc = rc; sqlite3RollbackAll(db, SQLITE_OK); p->nChange = 0; }else{ db->nDeferredCons = 0; db->nDeferredImmCons = 0; - db->flags &= ~SQLITE_DeferFKs; + db->flags &= ~(u64)SQLITE_DeferFKs; sqlite3CommitInternalChanges(db); } + }else if( p->rc==SQLITE_SCHEMA && db->nVdbeActive>1 ){ + p->nChange = 0; }else{ sqlite3RollbackAll(db, SQLITE_OK); p->nChange = 0; @@ -77680,7 +87112,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ p->nChange = 0; } } - + /* If eStatementOp is non-zero, then a statement transaction needs to ** be committed or rolled back. Call sqlite3VdbeCloseStatement() to ** do so. If this operation returns an error, and the current statement @@ -77701,9 +87133,9 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ p->nChange = 0; } } - + /* If this was an INSERT, UPDATE or DELETE and no statement transaction - ** has been rolled back, update the database connection change-counter. + ** has been rolled back, update the database connection change-counter. */ if( p->changeCntOn ){ if( eStatementOp!=SAVEPOINT_ROLLBACK ){ @@ -77719,22 +87151,20 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ } /* We have successfully halted and closed the VM. Record this fact. */ - if( p->pc>=0 ){ - db->nVdbeActive--; - if( !p->readOnly ) db->nVdbeWrite--; - if( p->bIsReader ) db->nVdbeRead--; - assert( db->nVdbeActive>=db->nVdbeRead ); - assert( db->nVdbeRead>=db->nVdbeWrite ); - assert( db->nVdbeWrite>=0 ); - } - p->magic = VDBE_MAGIC_HALT; + db->nVdbeActive--; + if( !p->readOnly ) db->nVdbeWrite--; + if( p->bIsReader ) db->nVdbeRead--; + assert( db->nVdbeActive>=db->nVdbeRead ); + assert( db->nVdbeRead>=db->nVdbeWrite ); + assert( db->nVdbeWrite>=0 ); + p->eVdbeState = VDBE_HALT_STATE; checkActiveVdbeCnt(db); if( db->mallocFailed ){ p->rc = SQLITE_NOMEM_BKPT; } /* If the auto-commit flag is set to true, then any locks that were held - ** by connection db have now been released. Call sqlite3ConnectionUnlocked() + ** by connection db have now been released. Call sqlite3ConnectionUnlocked() ** to invoke any required unlock-notify callbacks. */ if( db->autoCommit ){ @@ -77756,7 +87186,7 @@ SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe *p){ /* ** Copy the error code and error message belonging to the VDBE passed -** as the first argument to its database handle (so that they will be +** as the first argument to its database handle (so that they will be ** returned by calls to sqlite3_errcode() and sqlite3_errmsg()). ** ** This function does not clear the VDBE error code or message, just @@ -77776,12 +87206,13 @@ SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p){ sqlite3ValueSetNull(db->pErr); } db->errCode = rc; + db->errByteOffset = -1; return rc; } #ifdef SQLITE_ENABLE_SQLLOG /* -** If an SQLITE_CONFIG_SQLLOG hook is registered and the VM has been run, +** If an SQLITE_CONFIG_SQLLOG hook is registered and the VM has been run, ** invoke it. */ static void vdbeInvokeSqllog(Vdbe *v){ @@ -77808,8 +87239,8 @@ static void vdbeInvokeSqllog(Vdbe *v){ ** again. ** ** To look at it another way, this routine resets the state of the -** virtual machine from VDBE_MAGIC_RUN or VDBE_MAGIC_HALT back to -** VDBE_MAGIC_INIT. +** virtual machine from VDBE_RUN_STATE or VDBE_HALT_STATE back to +** VDBE_READY_STATE. */ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ #if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) @@ -77823,38 +87254,37 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ ** error, then it might not have been halted properly. So halt ** it now. */ - sqlite3VdbeHalt(p); + if( p->eVdbeState==VDBE_RUN_STATE ) sqlite3VdbeHalt(p); - /* If the VDBE has be run even partially, then transfer the error code + /* If the VDBE has been run even partially, then transfer the error code ** and error message from the VDBE into the main database structure. But ** if the VDBE has just been set to run but has not actually executed any ** instructions yet, leave the main database error information unchanged. */ if( p->pc>=0 ){ vdbeInvokeSqllog(p); - sqlite3VdbeTransferError(p); - if( p->runOnlyOnce ) p->expired = 1; - }else if( p->rc && p->expired ){ - /* The expired flag was set on the VDBE before the first call - ** to sqlite3_step(). For consistency (since sqlite3_step() was - ** called), set the database error in this case as well. - */ - sqlite3ErrorWithMsg(db, p->rc, p->zErrMsg ? "%s" : 0, p->zErrMsg); + if( db->pErr || p->zErrMsg ){ + sqlite3VdbeTransferError(p); + }else{ + db->errCode = p->rc; + } } /* Reset register contents and reclaim error message memory. */ #ifdef SQLITE_DEBUG - /* Execute assert() statements to ensure that the Vdbe.apCsr[] and + /* Execute assert() statements to ensure that the Vdbe.apCsr[] and ** Vdbe.aMem[] arrays have already been cleaned up. */ if( p->apCsr ) for(i=0; inCursor; i++) assert( p->apCsr[i]==0 ); if( p->aMem ){ for(i=0; inMem; i++) assert( p->aMem[i].flags==MEM_Undefined ); } #endif - sqlite3DbFree(db, p->zErrMsg); - p->zErrMsg = 0; - p->pResultSet = 0; + if( p->zErrMsg ){ + sqlite3DbFree(db, p->zErrMsg); + p->zErrMsg = 0; + } + p->pResultRow = 0; #ifdef SQLITE_DEBUG p->nWrite = 0; #endif @@ -77882,10 +87312,12 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ } for(i=0; inOp; i++){ char zHdr[100]; + i64 cnt = p->aOp[i].nExec; + i64 cycles = p->aOp[i].nCycle; sqlite3_snprintf(sizeof(zHdr), zHdr, "%6u %12llu %8llu ", - p->aOp[i].cnt, - p->aOp[i].cycles, - p->aOp[i].cnt>0 ? p->aOp[i].cycles/p->aOp[i].cnt : 0 + cnt, + cycles, + cnt>0 ? cycles/cnt : 0 ); fprintf(out, "%s", zHdr); sqlite3VdbePrintOp(out, i, &p->aOp[i]); @@ -77894,17 +87326,19 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ } } #endif - p->magic = VDBE_MAGIC_RESET; return p->rc & db->errMask; } - + /* ** Clean up and delete a VDBE after execution. Return an integer which is ** the result code. Write any error message text into *pzErrMsg. */ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe *p){ int rc = SQLITE_OK; - if( p->magic==VDBE_MAGIC_RUN || p->magic==VDBE_MAGIC_HALT ){ + assert( VDBE_RUN_STATE>VDBE_READY_STATE ); + assert( VDBE_HALT_STATE>VDBE_READY_STATE ); + assert( VDBE_INIT_STATEeVdbeState>=VDBE_READY_STATE ){ rc = sqlite3VdbeReset(p); assert( (rc & p->db->errMask)==rc ); } @@ -77918,8 +87352,8 @@ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe *p){ ** the first argument. ** ** Or, if iOp is greater than or equal to zero, then the destructor is -** only invoked for those auxiliary data pointers created by the user -** function invoked by the OP_Function opcode at instruction iOp of +** only invoked for those auxiliary data pointers created by the user +** function invoked by the OP_Function opcode at instruction iOp of ** VM pVdbe, and only then if: ** ** * the associated function parameter is the 32nd or later (counting @@ -77956,23 +87390,36 @@ SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3 *db, AuxData **pp, int iOp, ** VdbeDelete() also unlinks the Vdbe from the list of VMs associated with ** the database connection and frees the object itself. */ -SQLITE_PRIVATE void sqlite3VdbeClearObject(sqlite3 *db, Vdbe *p){ +static void sqlite3VdbeClearObject(sqlite3 *db, Vdbe *p){ SubProgram *pSub, *pNext; + assert( db!=0 ); assert( p->db==0 || p->db==db ); - releaseMemArray(p->aColName, p->nResColumn*COLNAME_N); + if( p->aColName ){ + releaseMemArray(p->aColName, p->nResAlloc*COLNAME_N); + sqlite3DbNNFreeNN(db, p->aColName); + } for(pSub=p->pProgram; pSub; pSub=pNext){ pNext = pSub->pNext; vdbeFreeOpArray(db, pSub->aOp, pSub->nOp); sqlite3DbFree(db, pSub); } - if( p->magic!=VDBE_MAGIC_INIT ){ + if( p->eVdbeState!=VDBE_INIT_STATE ){ releaseMemArray(p->aVar, p->nVar); - sqlite3DbFree(db, p->pVList); - sqlite3DbFree(db, p->pFree); + if( p->pVList ) sqlite3DbNNFreeNN(db, p->pVList); + if( p->pFree ) sqlite3DbNNFreeNN(db, p->pFree); } vdbeFreeOpArray(db, p->aOp, p->nOp); - sqlite3DbFree(db, p->aColName); - sqlite3DbFree(db, p->zSql); + if( p->zSql ) sqlite3DbNNFreeNN(db, p->zSql); +#ifdef SQLITE_ENABLE_NORMALIZE + sqlite3DbFree(db, p->zNormSql); + { + DblquoteStr *pThis, *pNxt; + for(pThis=p->pDblStr; pThis; pThis=pNxt){ + pNxt = pThis->pNextStr; + sqlite3DbFree(db, pThis); + } + } +#endif #ifdef SQLITE_ENABLE_STMT_SCANSTATUS { int i; @@ -77992,20 +87439,17 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){ assert( p!=0 ); db = p->db; + assert( db!=0 ); assert( sqlite3_mutex_held(db->mutex) ); sqlite3VdbeClearObject(db, p); - if( p->pPrev ){ - p->pPrev->pNext = p->pNext; - }else{ - assert( db->pVdbe==p ); - db->pVdbe = p->pNext; + if( db->pnBytesFreed==0 ){ + assert( p->ppVPrev!=0 ); + *p->ppVPrev = p->pVNext; + if( p->pVNext ){ + p->pVNext->ppVPrev = p->ppVPrev; + } } - if( p->pNext ){ - p->pNext->pPrev = p->pPrev; - } - p->magic = VDBE_MAGIC_DEAD; - p->db = 0; - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } /* @@ -78013,7 +87457,7 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){ ** carried out. Seek the cursor now. If an error occurs, return ** the appropriate error code. */ -static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){ +SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor *p){ int res, rc; #ifdef SQLITE_TEST extern int sqlite3_search_count; @@ -78021,7 +87465,7 @@ static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){ assert( p->deferredMoveto ); assert( p->isTable ); assert( p->eCurType==CURTYPE_BTREE ); - rc = sqlite3BtreeMovetoUnpacked(p->uc.pCursor, 0, p->movetoTarget, 0, &res); + rc = sqlite3BtreeTableMoveto(p->uc.pCursor, p->movetoTarget, 0, &res); if( rc ) return rc; if( res!=0 ) return SQLITE_CORRUPT_BKPT; #ifdef SQLITE_TEST @@ -78039,7 +87483,7 @@ static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){ ** is supposed to be pointing. If the row was deleted out from under the ** cursor, set the cursor to point to a NULL row. */ -static int SQLITE_NOINLINE handleMovedCursor(VdbeCursor *p){ +SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeHandleMovedCursor(VdbeCursor *p){ int isDifferentRow, rc; assert( p->eCurType==CURTYPE_BTREE ); assert( p->uc.pCursor!=0 ); @@ -78055,40 +87499,9 @@ static int SQLITE_NOINLINE handleMovedCursor(VdbeCursor *p){ ** if need be. Return any I/O error from the restore operation. */ SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor *p){ - assert( p->eCurType==CURTYPE_BTREE ); + assert( p->eCurType==CURTYPE_BTREE || IsNullCursor(p) ); if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){ - return handleMovedCursor(p); - } - return SQLITE_OK; -} - -/* -** Make sure the cursor p is ready to read or write the row to which it -** was last positioned. Return an error code if an OOM fault or I/O error -** prevents us from positioning the cursor to its correct position. -** -** If a MoveTo operation is pending on the given cursor, then do that -** MoveTo now. If no move is pending, check to see if the row has been -** deleted out from under the cursor and if it has, mark the row as -** a NULL row. -** -** If the cursor is already pointing to the correct row and that row has -** not been deleted out from under the cursor, then this routine is a no-op. -*/ -SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){ - VdbeCursor *p = *pp; - assert( p->eCurType==CURTYPE_BTREE || p->eCurType==CURTYPE_PSEUDO ); - if( p->deferredMoveto ){ - int iMap; - if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){ - *pp = p->pAltCursor; - *piCol = iMap - 1; - return SQLITE_OK; - } - return handleDeferredMoveto(p); - } - if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){ - return handleMovedCursor(p); + return sqlite3VdbeHandleMovedCursor(p); } return SQLITE_OK; } @@ -78099,7 +87512,7 @@ SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){ ** sqlite3VdbeSerialType() ** sqlite3VdbeSerialTypeLen() ** sqlite3VdbeSerialLen() -** sqlite3VdbeSerialPut() +** sqlite3VdbeSerialPut() <--- in-lined into OP_MakeRecord as of 2022-04-02 ** sqlite3VdbeSerialGet() ** ** encapsulate the code that serializes values for storage in SQLite @@ -78135,8 +87548,17 @@ SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){ ** of SQLite will not understand those serial types. */ +#if 0 /* Inlined into the OP_MakeRecord opcode */ /* ** Return the serial-type for the value stored in pMem. +** +** This routine might convert a large MEM_IntReal value into MEM_Real. +** +** 2019-07-11: The primary user of this subroutine was the OP_MakeRecord +** opcode in the byte-code engine. But by moving this routine in-line, we +** can omit some redundant tests and make that opcode a lot faster. So +** this routine is now only used by the STAT3 logic and STAT3 support has +** ended. The code is kept here for historical reference only. */ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){ int flags = pMem->flags; @@ -78147,11 +87569,13 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){ *pLen = 0; return 0; } - if( flags&MEM_Int ){ + if( flags&(MEM_Int|MEM_IntReal) ){ /* Figure out whether to use 1, 2, 4, 6 or 8 bytes. */ # define MAX_6BYTE ((((i64)0x00008000)<<32)-1) i64 i = pMem->u.i; u64 u; + testcase( flags & MEM_Int ); + testcase( flags & MEM_IntReal ); if( i<0 ){ u = ~i; }else{ @@ -78171,6 +87595,15 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){ if( u<=2147483647 ){ *pLen = 4; return 4; } if( u<=MAX_6BYTE ){ *pLen = 6; return 5; } *pLen = 8; + if( flags&MEM_IntReal ){ + /* If the value is IntReal and is going to take up 8 bytes to store + ** as an integer, then we might as well make it an 8-byte floating + ** point value */ + pMem->u.r = (double)pMem->u.i; + pMem->flags &= ~MEM_IntReal; + pMem->flags |= MEM_Real; + return 7; + } return 6; } if( flags&MEM_Real ){ @@ -78186,12 +87619,13 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){ *pLen = n; return ((n*2) + 12 + ((flags&MEM_Str)!=0)); } +#endif /* inlined into OP_MakeRecord */ /* ** The sizes for serial types less than 128 */ -static const u8 sqlite3SmallTypeSizes[] = { - /* 0 1 2 3 4 5 6 7 8 9 */ +SQLITE_PRIVATE const u8 sqlite3SmallTypeSizes[128] = { + /* 0 1 2 3 4 5 6 7 8 9 */ /* 0 */ 0, 1, 2, 3, 4, 6, 8, 8, 0, 0, /* 10 */ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, /* 20 */ 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, @@ -78214,19 +87648,19 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32 serial_type){ if( serial_type>=128 ){ return (serial_type-12)/2; }else{ - assert( serial_type<12 + assert( serial_type<12 || sqlite3SmallTypeSizes[serial_type]==(serial_type - 12)/2 ); return sqlite3SmallTypeSizes[serial_type]; } } SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){ assert( serial_type<128 ); - return sqlite3SmallTypeSizes[serial_type]; + return sqlite3SmallTypeSizes[serial_type]; } /* -** If we are on an architecture with mixed-endian floating -** points (ex: ARM7) then swap the lower 4 bytes with the +** If we are on an architecture with mixed-endian floating +** points (ex: ARM7) then swap the lower 4 bytes with the ** upper 4 bytes. Return the result. ** ** For most architectures, this is a no-op. @@ -78248,7 +87682,7 @@ SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){ ** (2007-08-30) Frank van Vugt has studied this problem closely ** and has send his findings to the SQLite developers. Frank ** writes that some Linux kernels offer floating point hardware -** emulation that uses only 32-bit mantissas instead of a full +** emulation that uses only 32-bit mantissas instead of a full ** 48-bits as required by the IEEE standard. (This is the ** CONFIG_FPE_FASTFPE option.) On such systems, floating point ** byte swapping becomes very complicated. To avoid problems, @@ -78259,7 +87693,7 @@ SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){ ** so we trust him. */ #ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT -static u64 floatSwap(u64 in){ +SQLITE_PRIVATE u64 sqlite3FloatSwap(u64 in){ union { u64 r; u32 i[2]; @@ -78272,59 +87706,8 @@ static u64 floatSwap(u64 in){ u.i[1] = t; return u.r; } -# define swapMixedEndianFloat(X) X = floatSwap(X) -#else -# define swapMixedEndianFloat(X) -#endif +#endif /* SQLITE_MIXED_ENDIAN_64BIT_FLOAT */ -/* -** Write the serialized data blob for the value stored in pMem into -** buf. It is assumed that the caller has allocated sufficient space. -** Return the number of bytes written. -** -** nBuf is the amount of space left in buf[]. The caller is responsible -** for allocating enough space to buf[] to hold the entire field, exclusive -** of the pMem->u.nZero bytes for a MEM_Zero value. -** -** Return the number of bytes actually written into buf[]. The number -** of bytes in the zero-filled tail is included in the return value only -** if those bytes were zeroed in buf[]. -*/ -SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){ - u32 len; - - /* Integer and Real */ - if( serial_type<=7 && serial_type>0 ){ - u64 v; - u32 i; - if( serial_type==7 ){ - assert( sizeof(v)==sizeof(pMem->u.r) ); - memcpy(&v, &pMem->u.r, sizeof(v)); - swapMixedEndianFloat(v); - }else{ - v = pMem->u.i; - } - len = i = sqlite3SmallTypeSizes[serial_type]; - assert( i>0 ); - do{ - buf[--i] = (u8)(v&0xFF); - v >>= 8; - }while( i ); - return len; - } - - /* String or blob */ - if( serial_type>=12 ){ - assert( pMem->n + ((pMem->flags & MEM_Zero)?pMem->u.nZero:0) - == (int)sqlite3VdbeSerialTypeLen(serial_type) ); - len = pMem->n; - if( len>0 ) memcpy(buf, pMem->z, len); - return len; - } - - /* NULL or constants 0 or 1 */ - return 0; -} /* Input "x" is a sequence of unsigned characters that represent a ** big-endian integer. Return the equivalent native integer @@ -78337,14 +87720,14 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){ /* ** Deserialize the data blob pointed to by buf as serial type serial_type -** and store the result in pMem. Return the number of bytes read. +** and store the result in pMem. ** ** This function is implemented as two separate routines for performance. ** The few cases that require local variables are broken out into a separate ** routine so that in most cases the overhead of moving the stack pointer ** is avoided. -*/ -static u32 SQLITE_NOINLINE serialGet( +*/ +static void serialGet( const unsigned char *buf, /* Buffer to deserialize from */ u32 serial_type, /* Serial type to deserialize */ Mem *pMem /* Memory cell to write value into */ @@ -78376,11 +87759,10 @@ static u32 SQLITE_NOINLINE serialGet( assert( sizeof(x)==8 && sizeof(pMem->u.r)==8 ); swapMixedEndianFloat(x); memcpy(&pMem->u.r, &x, sizeof(x)); - pMem->flags = sqlite3IsNaN(pMem->u.r) ? MEM_Null : MEM_Real; + pMem->flags = IsNaN(x) ? MEM_Null : MEM_Real; } - return 8; } -SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( +SQLITE_PRIVATE void sqlite3VdbeSerialGet( const unsigned char *buf, /* Buffer to deserialize from */ u32 serial_type, /* Serial type to deserialize */ Mem *pMem /* Memory cell to write value into */ @@ -78391,13 +87773,13 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->flags = MEM_Null|MEM_Zero; pMem->n = 0; pMem->u.nZero = 0; - break; + return; } case 11: /* Reserved for future use */ case 0: { /* Null */ /* EVIDENCE-OF: R-24078-09375 Value is a NULL. */ pMem->flags = MEM_Null; - break; + return; } case 1: { /* EVIDENCE-OF: R-44885-25196 Value is an 8-bit twos-complement @@ -78405,7 +87787,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->u.i = ONE_BYTE_INT(buf); pMem->flags = MEM_Int; testcase( pMem->u.i<0 ); - return 1; + return; } case 2: { /* 2-byte signed integer */ /* EVIDENCE-OF: R-49794-35026 Value is a big-endian 16-bit @@ -78413,7 +87795,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->u.i = TWO_BYTE_INT(buf); pMem->flags = MEM_Int; testcase( pMem->u.i<0 ); - return 2; + return; } case 3: { /* 3-byte signed integer */ /* EVIDENCE-OF: R-37839-54301 Value is a big-endian 24-bit @@ -78421,19 +87803,19 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->u.i = THREE_BYTE_INT(buf); pMem->flags = MEM_Int; testcase( pMem->u.i<0 ); - return 3; + return; } case 4: { /* 4-byte signed integer */ /* EVIDENCE-OF: R-01849-26079 Value is a big-endian 32-bit ** twos-complement integer. */ pMem->u.i = FOUR_BYTE_INT(buf); -#ifdef __HP_cc +#ifdef __HP_cc /* Work around a sign-extension bug in the HP compiler for HP/UX */ if( buf[0]&0x80 ) pMem->u.i |= 0xffffffff80000000LL; #endif pMem->flags = MEM_Int; testcase( pMem->u.i<0 ); - return 4; + return; } case 5: { /* 6-byte signed integer */ /* EVIDENCE-OF: R-50385-09674 Value is a big-endian 48-bit @@ -78441,13 +87823,14 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->u.i = FOUR_BYTE_UINT(buf+2) + (((i64)1)<<32)*TWO_BYTE_INT(buf); pMem->flags = MEM_Int; testcase( pMem->u.i<0 ); - return 6; + return; } case 6: /* 8-byte signed integer */ case 7: { /* IEEE floating point */ /* These use local variables, so do them in a separate routine ** to avoid having to move the frame pointer in the common case */ - return serialGet(buf,serial_type,pMem); + serialGet(buf,serial_type,pMem); + return; } case 8: /* Integer 0 */ case 9: { /* Integer 1 */ @@ -78455,7 +87838,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( /* EVIDENCE-OF: R-18143-12121 Value is the integer 1. */ pMem->u.i = serial_type-8; pMem->flags = MEM_Int; - return 0; + return; } default: { /* EVIDENCE-OF: R-14606-31564 Value is a BLOB that is (N-12)/2 bytes in @@ -78466,10 +87849,10 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( pMem->z = (char *)buf; pMem->n = (serial_type-12)/2; pMem->flags = aFlag[serial_type&1]; - return pMem->n; + return; } } - return 0; + return; } /* ** This routine is used to allocate sufficient space for an UnpackedRecord @@ -78479,7 +87862,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( ** The space is either allocated using sqlite3DbMallocRaw() or from within ** the unaligned buffer passed via the second and third arguments (presumably ** stack space). If the former, then *ppFree is set to a pointer that should -** be eventually freed by the caller using sqlite3DbFree(). Or, if the +** be eventually freed by the caller using sqlite3DbFree(). Or, if the ** allocation comes from the pSpace/szSpace buffer, *ppFree is set to NULL ** before returning. ** @@ -78490,21 +87873,21 @@ SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord( ){ UnpackedRecord *p; /* Unpacked record to return */ int nByte; /* Number of bytes required for *p */ - nByte = ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nKeyField+1); + nByte = ROUND8P(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nKeyField+1); p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte); if( !p ) return 0; - p->aMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))]; - assert( pKeyInfo->aSortOrder!=0 ); + p->aMem = (Mem*)&((char*)p)[ROUND8P(sizeof(UnpackedRecord))]; + assert( pKeyInfo->aSortFlags!=0 ); p->pKeyInfo = pKeyInfo; p->nField = pKeyInfo->nKeyField + 1; return p; } /* -** Given the nKey-byte encoding of a record in pKey[], populate the +** Given the nKey-byte encoding of a record in pKey[], populate the ** UnpackedRecord structure indicated by the fourth argument with the ** contents of the decoded record. -*/ +*/ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack( KeyInfo *pKeyInfo, /* Information about the record format */ int nKey, /* Size of the binary record */ @@ -78512,7 +87895,7 @@ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack( UnpackedRecord *p /* Populate this structure before returning. */ ){ const unsigned char *aKey = (const unsigned char *)pKey; - int d; + u32 d; u32 idx; /* Offset in aKey[] to read from */ u16 u; /* Unsigned loop counter */ u32 szHdr; @@ -78523,7 +87906,7 @@ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack( idx = getVarint32(aKey, szHdr); d = szHdr; u = 0; - while( idxflags = 0; // sqlite3VdbeSerialGet() will set this for us */ pMem->szMalloc = 0; pMem->z = 0; - d += sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem); + sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem); + d += sqlite3VdbeSerialTypeLen(serial_type); pMem++; if( (++u)>=p->nField ) break; } + if( d>(u32)nKey && u ){ + assert( CORRUPT_DB ); + /* In a corrupt record entry, the last pMem might have been set up using + ** uninitialized memory. Overwrite its value with NULL, to prevent + ** warnings from MSAN. */ + sqlite3VdbeMemSetNull(pMem-1); + } assert( u<=pKeyInfo->nKeyField + 1 ); p->nField = u; } @@ -78575,18 +87966,18 @@ static int vdbeRecordCompareDebug( /* Compilers may complain that mem1.u.i is potentially uninitialized. ** We could initialize it, as shown here, to silence those complaints. - ** But in fact, mem1.u.i will never actually be used uninitialized, and doing + ** But in fact, mem1.u.i will never actually be used uninitialized, and doing ** the unnecessary initialization has a measurable negative performance ** impact, since this routine is a very high runner. And so, we choose ** to ignore the compiler warnings and leave this variable uninitialized. */ /* mem1.u.i = 0; // not needed, here to silence compiler warning */ - + idx1 = getVarint32(aKey1, szHdr1); if( szHdr1>98307 ) return SQLITE_CORRUPT; d1 = szHdr1; assert( pKeyInfo->nAllField>=pPKey2->nField || CORRUPT_DB ); - assert( pKeyInfo->aSortOrder!=0 ); + assert( pKeyInfo->aSortFlags!=0 ); assert( pKeyInfo->nKeyField>0 ); assert( idx1<=szHdr1 || CORRUPT_DB ); do{ @@ -78601,22 +87992,38 @@ static int vdbeRecordCompareDebug( ** Use that approximation to avoid the more expensive call to ** sqlite3VdbeSerialTypeLen() in the common case. */ - if( d1+serial_type1+2>(u32)nKey1 - && d1+sqlite3VdbeSerialTypeLen(serial_type1)>(u32)nKey1 + if( d1+(u64)serial_type1+2>(u64)nKey1 + && d1+(u64)sqlite3VdbeSerialTypeLen(serial_type1)>(u64)nKey1 ){ + if( serial_type1>=1 + && serial_type1<=7 + && d1+(u64)sqlite3VdbeSerialTypeLen(serial_type1)<=(u64)nKey1+8 + && CORRUPT_DB + ){ + return 1; /* corrupt record not detected by + ** sqlite3VdbeRecordCompareWithSkip(). Return true + ** to avoid firing the assert() */ + } break; } /* Extract the values to be compared. */ - d1 += sqlite3VdbeSerialGet(&aKey1[d1], serial_type1, &mem1); + sqlite3VdbeSerialGet(&aKey1[d1], serial_type1, &mem1); + d1 += sqlite3VdbeSerialTypeLen(serial_type1); /* Do the comparison */ - rc = sqlite3MemCompare(&mem1, &pPKey2->aMem[i], pKeyInfo->aColl[i]); + rc = sqlite3MemCompare(&mem1, &pPKey2->aMem[i], + pKeyInfo->nAllField>i ? pKeyInfo->aColl[i] : 0); if( rc!=0 ){ assert( mem1.szMalloc==0 ); /* See comment below */ - if( pKeyInfo->aSortOrder[i] ){ + if( (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_BIGNULL) + && ((mem1.flags & MEM_Null) || (pPKey2->aMem[i].flags & MEM_Null)) + ){ + rc = -rc; + } + if( pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_DESC ){ rc = -rc; /* Invert the result for DESC sort order. */ } goto debugCompareEnd; @@ -78658,7 +88065,7 @@ debugCompareEnd: ** incorrectly. */ static void vdbeAssertFieldCountWithinLimits( - int nKey, const void *pKey, /* The record to verify */ + int nKey, const void *pKey, /* The record to verify */ const KeyInfo *pKeyInfo /* Compare size with this KeyInfo */ ){ int nField = 0; @@ -78684,7 +88091,7 @@ static void vdbeAssertFieldCountWithinLimits( /* ** Both *pMem1 and *pMem2 contain string values. Compare the two values ** using the collation sequence pColl. As usual, return a negative , zero -** or positive value if *pMem1 is less than, equal to or greater than +** or positive value if *pMem1 is less than, equal to or greater than ** *pMem2, respectively. Similar in spirit to "rc = (*pMem1) - (*pMem2);". */ static int vdbeCompareMemString( @@ -78714,8 +88121,8 @@ static int vdbeCompareMemString( }else{ rc = pColl->xCmp(pColl->pUser, c1.n, v1, c2.n, v2); } - sqlite3VdbeMemRelease(&c1); - sqlite3VdbeMemRelease(&c2); + sqlite3VdbeMemReleaseMalloc(&c1); + sqlite3VdbeMemReleaseMalloc(&c2); return rc; } } @@ -78737,7 +88144,7 @@ static int isAllZero(const char *z, int n){ ** is less than, equal to, or greater than the second, respectively. ** If one blob is a prefix of the other, then the shorter is the lessor. */ -static SQLITE_NOINLINE int sqlite3BlobCompare(const Mem *pB1, const Mem *pB2){ +SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3BlobCompare(const Mem *pB1, const Mem *pB2){ int c; int n1 = pB1->n; int n2 = pB2->n; @@ -78770,12 +88177,15 @@ static SQLITE_NOINLINE int sqlite3BlobCompare(const Mem *pB1, const Mem *pB2){ ** number. Return negative, zero, or positive if the first (i64) is less than, ** equal to, or greater than the second (double). */ -static int sqlite3IntFloatCompare(i64 i, double r){ +SQLITE_PRIVATE int sqlite3IntFloatCompare(i64 i, double r){ if( sizeof(LONGDOUBLE_TYPE)>8 ){ LONGDOUBLE_TYPE x = (LONGDOUBLE_TYPE)i; + testcase( xr ); + testcase( x==r ); if( xr ) return +1; - return 0; + if( x>r ) return +1; /*NO_TEST*/ /* work around bugs in gcov */ + return 0; /*NO_TEST*/ /* work around bugs in gcov */ }else{ i64 y; double s; @@ -78807,8 +88217,8 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C f1 = pMem1->flags; f2 = pMem2->flags; combined_flags = f1|f2; - assert( (combined_flags & MEM_RowSet)==0 ); - + assert( !sqlite3VdbeMemIsRowSet(pMem1) && !sqlite3VdbeMemIsRowSet(pMem2) ); + /* If one value is NULL, it is less than the other. If both values ** are NULL, return 0. */ @@ -78818,8 +88228,13 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C /* At least one of the two values is a number */ - if( combined_flags&(MEM_Int|MEM_Real) ){ - if( (f1 & f2 & MEM_Int)!=0 ){ + if( combined_flags&(MEM_Int|MEM_Real|MEM_IntReal) ){ + testcase( combined_flags & MEM_Int ); + testcase( combined_flags & MEM_Real ); + testcase( combined_flags & MEM_IntReal ); + if( (f1 & f2 & (MEM_Int|MEM_IntReal))!=0 ){ + testcase( f1 & f2 & MEM_Int ); + testcase( f1 & f2 & MEM_IntReal ); if( pMem1->u.i < pMem2->u.i ) return -1; if( pMem1->u.i > pMem2->u.i ) return +1; return 0; @@ -78829,15 +88244,23 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C if( pMem1->u.r > pMem2->u.r ) return +1; return 0; } - if( (f1&MEM_Int)!=0 ){ + if( (f1&(MEM_Int|MEM_IntReal))!=0 ){ + testcase( f1 & MEM_Int ); + testcase( f1 & MEM_IntReal ); if( (f2&MEM_Real)!=0 ){ return sqlite3IntFloatCompare(pMem1->u.i, pMem2->u.r); + }else if( (f2&(MEM_Int|MEM_IntReal))!=0 ){ + if( pMem1->u.i < pMem2->u.i ) return -1; + if( pMem1->u.i > pMem2->u.i ) return +1; + return 0; }else{ return -1; } } if( (f1&MEM_Real)!=0 ){ - if( (f2&MEM_Int)!=0 ){ + if( (f2&(MEM_Int|MEM_IntReal))!=0 ){ + testcase( f2 & MEM_Int ); + testcase( f2 & MEM_IntReal ); return -sqlite3IntFloatCompare(pMem2->u.i, pMem1->u.r); }else{ return -1; @@ -78858,7 +88281,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C } assert( pMem1->enc==pMem2->enc || pMem1->db->mallocFailed ); - assert( pMem1->enc==SQLITE_UTF8 || + assert( pMem1->enc==SQLITE_UTF8 || pMem1->enc==SQLITE_UTF16LE || pMem1->enc==SQLITE_UTF16BE ); /* The collation sequence must be defined at this point, even if @@ -78873,7 +88296,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C /* If a NULL pointer was passed as the collate function, fall through ** to the blob case and use memcmp(). */ } - + /* Both values must be blobs. Compare using memcmp(). */ return sqlite3BlobCompare(pMem1, pMem2); } @@ -78881,7 +88304,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C /* ** The first argument passed to this function is a serial-type that -** corresponds to an integer - all values between 1 and 9 inclusive +** corresponds to an integer - all values between 1 and 9 inclusive ** except 7. The second points to a buffer containing an integer value ** serialized according to serial_type. This function deserializes ** and returns the value. @@ -78923,7 +88346,7 @@ static i64 vdbeRecordDecodeInt(u32 serial_type, const u8 *aKey){ /* ** This function compares the two table rows or index records ** specified by {nKey1, pKey1} and pPKey2. It returns a negative, zero -** or positive integer if key1 is less than, equal to or +** or positive integer if key1 is less than, equal to or ** greater than key2. The {nKey1, pKey1} key must be a blob ** created by the OP_MakeRecord opcode of the VDBE. The pPKey2 ** key must be a parsed key such as obtained from @@ -78932,12 +88355,12 @@ static i64 vdbeRecordDecodeInt(u32 serial_type, const u8 *aKey){ ** If argument bSkip is non-zero, it is assumed that the caller has already ** determined that the first fields of the keys are equal. ** -** Key1 and Key2 do not have to contain the same number of fields. If all -** fields that appear in both keys are equal, then pPKey2->default_rc is +** Key1 and Key2 do not have to contain the same number of fields. If all +** fields that appear in both keys are equal, then pPKey2->default_rc is ** returned. ** -** If database corruption is discovered, set pPKey2->errCode to -** SQLITE_CORRUPT and return 0. If an OOM error is encountered, +** If database corruption is discovered, set pPKey2->errCode to +** SQLITE_CORRUPT and return 0. If an OOM error is encountered, ** pPKey2->errCode is set to SQLITE_NOMEM and, if it is not NULL, the ** malloc-failed flag set on database handle (pPKey2->pKeyInfo->db). */ @@ -78952,7 +88375,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( u32 idx1; /* Offset of first type in header */ int rc = 0; /* Return value */ Mem *pRhs = pPKey2->aMem; /* Next field of pPKey2 to compare */ - KeyInfo *pKeyInfo = pPKey2->pKeyInfo; + KeyInfo *pKeyInfo; const unsigned char *aKey1 = (const unsigned char *)pKey1; Mem mem1; @@ -78960,37 +88383,47 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( ** two elements in the keys are equal. Fix the various stack variables so ** that this routine begins comparing at the second field. */ if( bSkip ){ - u32 s1; - idx1 = 1 + getVarint32(&aKey1[1], s1); + u32 s1 = aKey1[1]; + if( s1<0x80 ){ + idx1 = 2; + }else{ + idx1 = 1 + sqlite3GetVarint32(&aKey1[1], &s1); + } szHdr1 = aKey1[0]; d1 = szHdr1 + sqlite3VdbeSerialTypeLen(s1); i = 1; pRhs++; }else{ - idx1 = getVarint32(aKey1, szHdr1); - d1 = szHdr1; - if( d1>(unsigned)nKey1 ){ - pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; - return 0; /* Corruption */ + if( (szHdr1 = aKey1[0])<0x80 ){ + idx1 = 1; + }else{ + idx1 = sqlite3GetVarint32(aKey1, &szHdr1); } + d1 = szHdr1; i = 0; } + if( d1>(unsigned)nKey1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corruption */ + } VVA_ONLY( mem1.szMalloc = 0; ) /* Only needed by assert() statements */ - assert( pPKey2->pKeyInfo->nAllField>=pPKey2->nField + assert( pPKey2->pKeyInfo->nAllField>=pPKey2->nField || CORRUPT_DB ); - assert( pPKey2->pKeyInfo->aSortOrder!=0 ); + assert( pPKey2->pKeyInfo->aSortFlags!=0 ); assert( pPKey2->pKeyInfo->nKeyField>0 ); assert( idx1<=szHdr1 || CORRUPT_DB ); - do{ + while( 1 /*exit-by-break*/ ){ u32 serial_type; /* RHS is an integer */ - if( pRhs->flags & MEM_Int ){ + if( pRhs->flags & (MEM_Int|MEM_IntReal) ){ + testcase( pRhs->flags & MEM_Int ); + testcase( pRhs->flags & MEM_IntReal ); serial_type = aKey1[idx1]; testcase( serial_type==12 ); if( serial_type>=10 ){ - rc = +1; + rc = serial_type==10 ? -1 : +1; }else if( serial_type==0 ){ rc = -1; }else if( serial_type==7 ){ @@ -79012,10 +88445,10 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( serial_type = aKey1[idx1]; if( serial_type>=10 ){ /* Serial types 12 or greater are strings and blobs (greater than - ** numbers). Types 10 and 11 are currently "reserved for future + ** numbers). Types 10 and 11 are currently "reserved for future ** use", so it doesn't really matter what the results of comparing - ** them to numberic values are. */ - rc = +1; + ** them to numeric values are. */ + rc = serial_type==10 ? -1 : +1; }else if( serial_type==0 ){ rc = -1; }else{ @@ -79034,7 +88467,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( /* RHS is a string */ else if( pRhs->flags & MEM_Str ){ - getVarint32(&aKey1[idx1], serial_type); + getVarint32NR(&aKey1[idx1], serial_type); testcase( serial_type==12 ); if( serial_type<12 ){ rc = -1; @@ -79044,7 +88477,9 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( mem1.n = (serial_type - 12) / 2; testcase( (d1+mem1.n)==(unsigned)nKey1 ); testcase( (d1+mem1.n+1)==(unsigned)nKey1 ); - if( (d1+mem1.n) > (unsigned)nKey1 ){ + if( (d1+mem1.n) > (unsigned)nKey1 + || (pKeyInfo = pPKey2->pKeyInfo)->nAllField<=i + ){ pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; return 0; /* Corruption */ }else if( pKeyInfo->aColl[i] ){ @@ -79058,7 +88493,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( }else{ int nCmp = MIN(mem1.n, pRhs->n); rc = memcmp(&aKey1[d1], pRhs->z, nCmp); - if( rc==0 ) rc = mem1.n - pRhs->n; + if( rc==0 ) rc = mem1.n - pRhs->n; } } } @@ -79066,7 +88501,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( /* RHS is a blob */ else if( pRhs->flags & MEM_Blob ){ assert( (pRhs->flags & MEM_Zero)==0 || pRhs->n==0 ); - getVarint32(&aKey1[idx1], serial_type); + getVarint32NR(&aKey1[idx1], serial_type); testcase( serial_type==12 ); if( serial_type<12 || (serial_type & 0x01) ){ rc = -1; @@ -79094,12 +88529,18 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( /* RHS is null */ else{ serial_type = aKey1[idx1]; - rc = (serial_type!=0); + rc = (serial_type!=0 && serial_type!=10); } if( rc!=0 ){ - if( pKeyInfo->aSortOrder[i] ){ - rc = -rc; + int sortFlags = pPKey2->pKeyInfo->aSortFlags[i]; + if( sortFlags ){ + if( (sortFlags & KEYINFO_ORDER_BIGNULL)==0 + || ((sortFlags & KEYINFO_ORDER_DESC) + !=(serial_type==0 || (pRhs->flags&MEM_Null))) + ){ + rc = -rc; + } } assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, rc) ); assert( mem1.szMalloc==0 ); /* See comment below */ @@ -79107,10 +88548,16 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( } i++; + if( i==pPKey2->nField ) break; pRhs++; d1 += sqlite3VdbeSerialTypeLen(serial_type); + if( d1>(unsigned)nKey1 ) break; idx1 += sqlite3VarintLen(serial_type); - }while( idx1<(unsigned)szHdr1 && inField && d1<=(unsigned)nKey1 ); + if( idx1>=(unsigned)szHdr1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corrupt index */ + } + } /* No memory allocation is ever used on mem1. Prove this using ** the following assert(). If the assert() fails, it indicates a @@ -79120,9 +88567,9 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( /* rc==0 here means that one or both of the keys ran out of fields and ** all the fields up to that point were equal. Return the default_rc ** value. */ - assert( CORRUPT_DB - || vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc) - || pKeyInfo->db->mallocFailed + assert( CORRUPT_DB + || vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc) + || pPKey2->pKeyInfo->db->mallocFailed ); pPKey2->eqSeen = 1; return pPKey2->default_rc; @@ -79136,8 +88583,8 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare( /* -** This function is an optimized version of sqlite3VdbeRecordCompare() -** that (a) the first field of pPKey2 is an integer, and (b) the +** This function is an optimized version of sqlite3VdbeRecordCompare() +** that (a) the first field of pPKey2 is an integer, and (b) the ** size-of-header varint at the start of (pKey1/nKey1) fits in a single ** byte (i.e. is less than 128). ** @@ -79192,7 +88639,7 @@ static int vdbeRecordCompareInt( testcase( lhs<0 ); break; } - case 8: + case 8: lhs = 0; break; case 9: @@ -79200,11 +88647,11 @@ static int vdbeRecordCompareInt( break; /* This case could be removed without changing the results of running - ** this code. Including it causes gcc to generate a faster switch + ** this code. Including it causes gcc to generate a faster switch ** statement (since the range of switch targets now starts at zero and ** is contiguous) but does not cause any duplicate code to be generated - ** (as gcc is clever enough to combine the two like cases). Other - ** compilers might be similar. */ + ** (as gcc is clever enough to combine the two like cases). Other + ** compilers might be similar. */ case 0: case 7: return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2); @@ -79212,13 +88659,14 @@ static int vdbeRecordCompareInt( return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2); } - v = pPKey2->aMem[0].u.i; + assert( pPKey2->u.i == pPKey2->aMem[0].u.i ); + v = pPKey2->u.i; if( v>lhs ){ res = pPKey2->r1; }else if( vr2; }else if( pPKey2->nField>1 ){ - /* The first fields of the two keys are equal. Compare the trailing + /* The first fields of the two keys are equal. Compare the trailing ** fields. */ res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1); }else{ @@ -79233,9 +88681,9 @@ static int vdbeRecordCompareInt( } /* -** This function is an optimized version of sqlite3VdbeRecordCompare() +** This function is an optimized version of sqlite3VdbeRecordCompare() ** that (a) the first field of pPKey2 is a string, that (b) the first field -** uses the collation sequence BINARY and (c) that the size-of-header varint +** uses the collation sequence BINARY and (c) that the size-of-header varint ** at the start of (pKey1/nKey1) fits in a single byte. */ static int vdbeRecordCompareString( @@ -79247,11 +88695,20 @@ static int vdbeRecordCompareString( int res; assert( pPKey2->aMem[0].flags & MEM_Str ); + assert( pPKey2->aMem[0].n == pPKey2->n ); + assert( pPKey2->aMem[0].z == pPKey2->u.z ); vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo); - getVarint32(&aKey1[1], serial_type); + serial_type = (signed char)(aKey1[1]); + +vrcs_restart: if( serial_type<12 ){ + if( serial_type<0 ){ + sqlite3GetVarint32(&aKey1[1], (u32*)&serial_type); + if( serial_type>=12 ) goto vrcs_restart; + assert( CORRUPT_DB ); + } res = pPKey2->r1; /* (pKey1/nKey1) is a number or a null */ - }else if( !(serial_type & 0x01) ){ + }else if( !(serial_type & 0x01) ){ res = pPKey2->r2; /* (pKey1/nKey1) is a blob */ }else{ int nCmp; @@ -79263,11 +88720,15 @@ static int vdbeRecordCompareString( pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; return 0; /* Corruption */ } - nCmp = MIN( pPKey2->aMem[0].n, nStr ); - res = memcmp(&aKey1[szHdr], pPKey2->aMem[0].z, nCmp); + nCmp = MIN( pPKey2->n, nStr ); + res = memcmp(&aKey1[szHdr], pPKey2->u.z, nCmp); - if( res==0 ){ - res = nStr - pPKey2->aMem[0].n; + if( res>0 ){ + res = pPKey2->r2; + }else if( res<0 ){ + res = pPKey2->r1; + }else{ + res = nStr - pPKey2->n; if( res==0 ){ if( pPKey2->nField>1 ){ res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1); @@ -79280,10 +88741,6 @@ static int vdbeRecordCompareString( }else{ res = pPKey2->r1; } - }else if( res>0 ){ - res = pPKey2->r2; - }else{ - res = pPKey2->r1; } } @@ -79303,7 +88760,7 @@ SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord *p){ /* varintRecordCompareInt() and varintRecordCompareString() both assume ** that the size-of-header varint that occurs at the start of each record ** fits in a single byte (i.e. is 127 or less). varintRecordCompareInt() - ** also assumes that it is safe to overread a buffer by at least the + ** also assumes that it is safe to overread a buffer by at least the ** maximum possible legal header size plus 8 bytes. Because there is ** guaranteed to be at least 74 (but not 136) bytes of padding following each ** buffer passed to varintRecordCompareInt() this makes it convenient to @@ -79315,7 +88772,10 @@ SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord *p){ ** header size is (12*5 + 1 + 1) bytes. */ if( p->pKeyInfo->nAllField<=13 ){ int flags = p->aMem[0].flags; - if( p->pKeyInfo->aSortOrder[0] ){ + if( p->pKeyInfo->aSortFlags[0] ){ + if( p->pKeyInfo->aSortFlags[0] & KEYINFO_ORDER_BIGNULL ){ + return sqlite3VdbeRecordCompare; + } p->r1 = 1; p->r2 = -1; }else{ @@ -79323,13 +88783,18 @@ SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord *p){ p->r2 = 1; } if( (flags & MEM_Int) ){ + p->u.i = p->aMem[0].u.i; return vdbeRecordCompareInt; } testcase( flags & MEM_Real ); testcase( flags & MEM_Null ); testcase( flags & MEM_Blob ); - if( (flags & (MEM_Real|MEM_Null|MEM_Blob))==0 && p->pKeyInfo->aColl[0]==0 ){ + if( (flags & (MEM_Real|MEM_IntReal|MEM_Null|MEM_Blob))==0 + && p->pKeyInfo->aColl[0]==0 + ){ assert( flags & MEM_Str ); + p->u.z = p->aMem[0].z; + p->n = p->aMem[0].n; return vdbeRecordCompareString; } } @@ -79356,7 +88821,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){ /* Get the size of the index entry. Only indices entries of less ** than 2GiB are support - anything large must be database corruption. ** Any corruption is detected in sqlite3BtreeParseCellPtr(), though, so - ** this code can safely assume that nCellKey is 32-bits + ** this code can safely assume that nCellKey is 32-bits */ assert( sqlite3BtreeCursorIsValid(pCur) ); nCellKey = sqlite3BtreePayloadSize(pCur); @@ -79364,22 +88829,24 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){ /* Read in the complete content of the index entry */ sqlite3VdbeMemInit(&m, db, 0); - rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m); if( rc ){ return rc; } /* The index entry must begin with a header size */ - (void)getVarint32((u8*)m.z, szHdr); + getVarint32NR((u8*)m.z, szHdr); testcase( szHdr==3 ); - testcase( szHdr==m.n ); - if( unlikely(szHdr<3 || (int)szHdr>m.n) ){ + testcase( szHdr==(u32)m.n ); + testcase( szHdr>0x7fffffff ); + assert( m.n>=0 ); + if( unlikely(szHdr<3 || szHdr>(unsigned)m.n) ){ goto idx_rowid_corruption; } /* The last field of the index should be an integer - the ROWID. ** Verify that the last entry really is an integer. */ - (void)getVarint32((u8*)&m.z[szHdr-1], typeRowid); + getVarint32NR((u8*)&m.z[szHdr-1], typeRowid); testcase( typeRowid==1 ); testcase( typeRowid==2 ); testcase( typeRowid==3 ); @@ -79400,14 +88867,14 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){ /* Fetch the integer off the end of the index record */ sqlite3VdbeSerialGet((u8*)&m.z[m.n-lenRowid], typeRowid, &v); *rowid = v.u.i; - sqlite3VdbeMemRelease(&m); + sqlite3VdbeMemReleaseMalloc(&m); return SQLITE_OK; /* Jump here if database corruption is detected after m has been ** allocated. Free the m object and return SQLITE_CORRUPT. */ idx_rowid_corruption: testcase( m.szMalloc!=0 ); - sqlite3VdbeMemRelease(&m); + sqlite3VdbeMemReleaseMalloc(&m); return SQLITE_CORRUPT_BKPT; } @@ -79419,7 +88886,7 @@ idx_rowid_corruption: ** ** pUnpacked is either created without a rowid or is truncated so that it ** omits the rowid at the end. The rowid at the end of the index entry -** is ignored as well. Hence, this routine only compares the prefixes +** is ignored as well. Hence, this routine only compares the prefixes ** of the keys prior to the final rowid, not the entire key. */ SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare( @@ -79444,20 +88911,20 @@ SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare( return SQLITE_CORRUPT_BKPT; } sqlite3VdbeMemInit(&m, db, 0); - rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m); if( rc ){ return rc; } - *res = sqlite3VdbeRecordCompare(m.n, m.z, pUnpacked); - sqlite3VdbeMemRelease(&m); + *res = sqlite3VdbeRecordCompareWithSkip(m.n, m.z, pUnpacked, 0); + sqlite3VdbeMemReleaseMalloc(&m); return SQLITE_OK; } /* ** This routine sets the value to be returned by subsequent calls to -** sqlite3_changes() on the database handle 'db'. +** sqlite3_changes() on the database handle 'db'. */ -SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *db, int nChange){ +SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *db, i64 nChange){ assert( sqlite3_mutex_held(db->mutex) ); db->nChange = nChange; db->nTotalChange += nChange; @@ -79480,11 +88947,19 @@ SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe *v){ ** programs obsolete. Removing user-defined functions or collating ** sequences, or changing an authorization function are the types of ** things that make prepared statements obsolete. +** +** If iCode is 1, then expiration is advisory. The statement should +** be reprepared before being restarted, but if it is already running +** it is allowed to run to completion. +** +** Internally, this function just sets the Vdbe.expired flag on all +** prepared statements. The flag is set to 1 for an immediate expiration +** and set to 2 for an advisory expiration. */ -SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3 *db){ +SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3 *db, int iCode){ Vdbe *p; - for(p = db->pVdbe; p; p=p->pNext){ - p->expired = 1; + for(p = db->pVdbe; p; p=p->pVNext){ + p->expired = iCode+1; } } @@ -79504,7 +88979,7 @@ SQLITE_PRIVATE u8 sqlite3VdbePrepareFlags(Vdbe *v){ /* ** Return a pointer to an sqlite3_value structure containing the value bound -** parameter iVar of VM v. Except, if the value is an SQL NULL, return +** parameter iVar of VM v. Except, if the value is an SQL NULL, return ** 0 instead. Unless it is NULL, apply affinity aff (one of the SQLITE_AFF_* ** constants) to the value before returning it. ** @@ -79552,18 +89027,44 @@ SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe *v, int iVar){ ** features such as 'now'. */ SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context *pCtx){ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + const VdbeOp *pOp; +#ifdef SQLITE_ENABLE_STAT4 if( pCtx->pVdbe==0 ) return 1; #endif - if( pCtx->pVdbe->aOp[pCtx->iOp].opcode==OP_PureFunc ){ - sqlite3_result_error(pCtx, - "non-deterministic function in index expression or CHECK constraint", - -1); + pOp = pCtx->pVdbe->aOp + pCtx->iOp; + if( pOp->opcode==OP_PureFunc ){ + const char *zContext; + char *zMsg; + if( pOp->p5 & NC_IsCheck ){ + zContext = "a CHECK constraint"; + }else if( pOp->p5 & NC_GenCol ){ + zContext = "a generated column"; + }else{ + zContext = "an index"; + } + zMsg = sqlite3_mprintf("non-deterministic use of %s() in %s", + pCtx->pFunc->zName, zContext); + sqlite3_result_error(pCtx, zMsg, -1); + sqlite3_free(zMsg); return 0; } return 1; } +#if defined(SQLITE_ENABLE_CURSOR_HINTS) && defined(SQLITE_DEBUG) +/* +** This Walker callback is used to help verify that calls to +** sqlite3BtreeCursorHint() with opcode BTREE_HINT_RANGE have +** byte-code register values correctly initialized. +*/ +SQLITE_PRIVATE int sqlite3CursorRangeHintExprCheck(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_REGISTER ){ + assert( (pWalker->u.aMem[pExpr->iTable].flags & MEM_Undefined)==0 ); + } + return WRC_Continue; +} +#endif /* SQLITE_ENABLE_CURSOR_HINTS && SQLITE_DEBUG */ + #ifndef SQLITE_OMIT_VIRTUALTABLE /* ** Transfer error message text from an sqlite3_vtab.zErrMsg (text stored @@ -79584,7 +89085,7 @@ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe *p, sqlite3_vtab *pVtab){ #ifdef SQLITE_ENABLE_PREUPDATE_HOOK /* -** If the second argument is not NULL, release any allocations associated +** If the second argument is not NULL, release any allocations associated ** with the memory cells in the p->aMem[] array. Also free the UnpackedRecord ** structure itself, using sqlite3DbFree(). ** @@ -79592,13 +89093,14 @@ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe *p, sqlite3_vtab *pVtab){ ** the vdbeUnpackRecord() function found in vdbeapi.c. */ static void vdbeFreeUnpacked(sqlite3 *db, int nField, UnpackedRecord *p){ + assert( db!=0 ); if( p ){ int i; for(i=0; iaMem[i]; - if( pMem->zMalloc ) sqlite3VdbeMemRelease(pMem); + if( pMem->zMalloc ) sqlite3VdbeMemReleaseMalloc(pMem); } - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } } #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ @@ -79617,13 +89119,24 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( const char *zDb, /* Database name */ Table *pTab, /* Modified table */ i64 iKey1, /* Initial key value */ - int iReg /* Register for new.* record */ + int iReg, /* Register for new.* record */ + int iBlobWrite ){ sqlite3 *db = v->db; i64 iKey2; PreUpdate preupdate; const char *zTbl = pTab->zName; static const u8 fakeSortOrder = 0; +#ifdef SQLITE_DEBUG + int nRealCol; + if( pTab->tabFlags & TF_WithoutRowid ){ + nRealCol = sqlite3PrimaryKeyIndex(pTab)->nColumn; + }else if( pTab->tabFlags & TF_HasVirtual ){ + nRealCol = pTab->nNVCol; + }else{ + nRealCol = pTab->nCol; + } +#endif assert( db->pPreUpdate==0 ); memset(&preupdate, 0, sizeof(PreUpdate)); @@ -79638,8 +89151,10 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( } } - assert( pCsr->nField==pTab->nCol - || (pCsr->nField==pTab->nCol+1 && op==SQLITE_DELETE && iReg==-1) + assert( pCsr!=0 ); + assert( pCsr->eCurType==CURTYPE_BTREE ); + assert( pCsr->nField==nRealCol + || (pCsr->nField==nRealCol+1 && op==SQLITE_DELETE && iReg==-1) ); preupdate.v = v; @@ -79649,10 +89164,11 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( preupdate.keyinfo.db = db; preupdate.keyinfo.enc = ENC(db); preupdate.keyinfo.nKeyField = pTab->nCol; - preupdate.keyinfo.aSortOrder = (u8*)&fakeSortOrder; + preupdate.keyinfo.aSortFlags = (u8*)&fakeSortOrder; preupdate.iKey1 = iKey1; preupdate.iKey2 = iKey2; preupdate.pTab = pTab; + preupdate.iBlobWrite = iBlobWrite; db->pPreUpdate = &preupdate; db->xPreUpdateCallback(db->pPreUpdateArg, db, op, zDb, zTbl, iKey1, iKey2); @@ -79665,7 +89181,7 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( for(i=0; inField; i++){ sqlite3VdbeMemRelease(&preupdate.aNew[i]); } - sqlite3DbFreeNN(db, preupdate.aNew); + sqlite3DbNNFreeNN(db, preupdate.aNew); } } #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ @@ -79689,6 +89205,7 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( */ /* #include "sqliteInt.h" */ /* #include "vdbeInt.h" */ +/* #include "opcodes.h" */ #ifndef SQLITE_OMIT_DEPRECATED /* @@ -79736,16 +89253,18 @@ static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){ sqlite3_int64 iNow; sqlite3_int64 iElapse; assert( p->startTime>0 ); - assert( db->xProfile!=0 || (db->mTrace & SQLITE_TRACE_PROFILE)!=0 ); + assert( (db->mTrace & (SQLITE_TRACE_PROFILE|SQLITE_TRACE_XPROFILE))!=0 ); assert( db->init.busy==0 ); assert( p->zSql!=0 ); sqlite3OsCurrentTimeInt64(db->pVfs, &iNow); iElapse = (iNow - p->startTime)*1000000; +#ifndef SQLITE_OMIT_DEPRECATED if( db->xProfile ){ db->xProfile(db->pProfileArg, p->zSql, iElapse); } +#endif if( db->mTrace & SQLITE_TRACE_PROFILE ){ - db->xTrace(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse); + db->trace.xV2(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse); } p->startTime = 0; } @@ -79780,7 +89299,9 @@ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt){ if( vdbeSafety(v) ) return SQLITE_MISUSE_BKPT; sqlite3_mutex_enter(db->mutex); checkProfileCallback(db, v); - rc = sqlite3VdbeFinalize(v); + assert( v->eVdbeState>=VDBE_READY_STATE ); + rc = sqlite3VdbeReset(v); + sqlite3VdbeDelete(v); rc = sqlite3ApiExit(db, rc); sqlite3LeaveMutexAndCloseZombie(db); } @@ -79906,47 +89427,102 @@ SQLITE_API const void *sqlite3_value_text16le(sqlite3_value *pVal){ */ SQLITE_API int sqlite3_value_type(sqlite3_value* pVal){ static const u8 aType[] = { - SQLITE_BLOB, /* 0x00 */ - SQLITE_NULL, /* 0x01 */ - SQLITE_TEXT, /* 0x02 */ - SQLITE_NULL, /* 0x03 */ - SQLITE_INTEGER, /* 0x04 */ - SQLITE_NULL, /* 0x05 */ - SQLITE_INTEGER, /* 0x06 */ - SQLITE_NULL, /* 0x07 */ - SQLITE_FLOAT, /* 0x08 */ - SQLITE_NULL, /* 0x09 */ - SQLITE_FLOAT, /* 0x0a */ - SQLITE_NULL, /* 0x0b */ - SQLITE_INTEGER, /* 0x0c */ - SQLITE_NULL, /* 0x0d */ - SQLITE_INTEGER, /* 0x0e */ - SQLITE_NULL, /* 0x0f */ - SQLITE_BLOB, /* 0x10 */ - SQLITE_NULL, /* 0x11 */ - SQLITE_TEXT, /* 0x12 */ - SQLITE_NULL, /* 0x13 */ - SQLITE_INTEGER, /* 0x14 */ - SQLITE_NULL, /* 0x15 */ - SQLITE_INTEGER, /* 0x16 */ - SQLITE_NULL, /* 0x17 */ - SQLITE_FLOAT, /* 0x18 */ - SQLITE_NULL, /* 0x19 */ - SQLITE_FLOAT, /* 0x1a */ - SQLITE_NULL, /* 0x1b */ - SQLITE_INTEGER, /* 0x1c */ - SQLITE_NULL, /* 0x1d */ - SQLITE_INTEGER, /* 0x1e */ - SQLITE_NULL, /* 0x1f */ + SQLITE_BLOB, /* 0x00 (not possible) */ + SQLITE_NULL, /* 0x01 NULL */ + SQLITE_TEXT, /* 0x02 TEXT */ + SQLITE_NULL, /* 0x03 (not possible) */ + SQLITE_INTEGER, /* 0x04 INTEGER */ + SQLITE_NULL, /* 0x05 (not possible) */ + SQLITE_INTEGER, /* 0x06 INTEGER + TEXT */ + SQLITE_NULL, /* 0x07 (not possible) */ + SQLITE_FLOAT, /* 0x08 FLOAT */ + SQLITE_NULL, /* 0x09 (not possible) */ + SQLITE_FLOAT, /* 0x0a FLOAT + TEXT */ + SQLITE_NULL, /* 0x0b (not possible) */ + SQLITE_INTEGER, /* 0x0c (not possible) */ + SQLITE_NULL, /* 0x0d (not possible) */ + SQLITE_INTEGER, /* 0x0e (not possible) */ + SQLITE_NULL, /* 0x0f (not possible) */ + SQLITE_BLOB, /* 0x10 BLOB */ + SQLITE_NULL, /* 0x11 (not possible) */ + SQLITE_TEXT, /* 0x12 (not possible) */ + SQLITE_NULL, /* 0x13 (not possible) */ + SQLITE_INTEGER, /* 0x14 INTEGER + BLOB */ + SQLITE_NULL, /* 0x15 (not possible) */ + SQLITE_INTEGER, /* 0x16 (not possible) */ + SQLITE_NULL, /* 0x17 (not possible) */ + SQLITE_FLOAT, /* 0x18 FLOAT + BLOB */ + SQLITE_NULL, /* 0x19 (not possible) */ + SQLITE_FLOAT, /* 0x1a (not possible) */ + SQLITE_NULL, /* 0x1b (not possible) */ + SQLITE_INTEGER, /* 0x1c (not possible) */ + SQLITE_NULL, /* 0x1d (not possible) */ + SQLITE_INTEGER, /* 0x1e (not possible) */ + SQLITE_NULL, /* 0x1f (not possible) */ + SQLITE_FLOAT, /* 0x20 INTREAL */ + SQLITE_NULL, /* 0x21 (not possible) */ + SQLITE_FLOAT, /* 0x22 INTREAL + TEXT */ + SQLITE_NULL, /* 0x23 (not possible) */ + SQLITE_FLOAT, /* 0x24 (not possible) */ + SQLITE_NULL, /* 0x25 (not possible) */ + SQLITE_FLOAT, /* 0x26 (not possible) */ + SQLITE_NULL, /* 0x27 (not possible) */ + SQLITE_FLOAT, /* 0x28 (not possible) */ + SQLITE_NULL, /* 0x29 (not possible) */ + SQLITE_FLOAT, /* 0x2a (not possible) */ + SQLITE_NULL, /* 0x2b (not possible) */ + SQLITE_FLOAT, /* 0x2c (not possible) */ + SQLITE_NULL, /* 0x2d (not possible) */ + SQLITE_FLOAT, /* 0x2e (not possible) */ + SQLITE_NULL, /* 0x2f (not possible) */ + SQLITE_BLOB, /* 0x30 (not possible) */ + SQLITE_NULL, /* 0x31 (not possible) */ + SQLITE_TEXT, /* 0x32 (not possible) */ + SQLITE_NULL, /* 0x33 (not possible) */ + SQLITE_FLOAT, /* 0x34 (not possible) */ + SQLITE_NULL, /* 0x35 (not possible) */ + SQLITE_FLOAT, /* 0x36 (not possible) */ + SQLITE_NULL, /* 0x37 (not possible) */ + SQLITE_FLOAT, /* 0x38 (not possible) */ + SQLITE_NULL, /* 0x39 (not possible) */ + SQLITE_FLOAT, /* 0x3a (not possible) */ + SQLITE_NULL, /* 0x3b (not possible) */ + SQLITE_FLOAT, /* 0x3c (not possible) */ + SQLITE_NULL, /* 0x3d (not possible) */ + SQLITE_FLOAT, /* 0x3e (not possible) */ + SQLITE_NULL, /* 0x3f (not possible) */ }; +#ifdef SQLITE_DEBUG + { + int eType = SQLITE_BLOB; + if( pVal->flags & MEM_Null ){ + eType = SQLITE_NULL; + }else if( pVal->flags & (MEM_Real|MEM_IntReal) ){ + eType = SQLITE_FLOAT; + }else if( pVal->flags & MEM_Int ){ + eType = SQLITE_INTEGER; + }else if( pVal->flags & MEM_Str ){ + eType = SQLITE_TEXT; + } + assert( eType == aType[pVal->flags&MEM_AffMask] ); + } +#endif return aType[pVal->flags&MEM_AffMask]; } +SQLITE_API int sqlite3_value_encoding(sqlite3_value *pVal){ + return pVal->enc; +} /* Return true if a parameter to xUpdate represents an unchanged column */ SQLITE_API int sqlite3_value_nochange(sqlite3_value *pVal){ return (pVal->flags&(MEM_Null|MEM_Zero))==(MEM_Null|MEM_Zero); } +/* Return true if a parameter value originated from an sqlite3_bind() */ +SQLITE_API int sqlite3_value_frombind(sqlite3_value *pVal){ + return (pVal->flags&MEM_FromBind)!=0; +} + /* Make a copy of an sqlite3_value object */ SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){ @@ -79965,6 +89541,9 @@ SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){ sqlite3ValueFree(pNew); pNew = 0; } + }else if( pNew->flags & MEM_Null ){ + /* Do not duplicate pointer values */ + pNew->flags &= ~(MEM_Term|MEM_Subtype); } return pNew; } @@ -79975,15 +89554,15 @@ SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){ SQLITE_API void sqlite3_value_free(sqlite3_value *pOld){ sqlite3ValueFree(pOld); } - + /**************************** sqlite3_result_ ******************************* ** The following routines are used by user-defined functions to specify ** the function result. ** ** The setStrOrError() function calls sqlite3VdbeMemSetStr() to store the -** result as a string or blob but if the string or blob is too large, it -** then sets the error code to SQLITE_TOOBIG +** result as a string or blob. Appropriate errors are set if the string/blob +** is too big or if an OOM occurs. ** ** The invokeValueDestructor(P,X) routine invokes destructor function X() ** on value P is not going to be used and need to be destroyed. @@ -79995,7 +89574,21 @@ static void setResultStrOrError( u8 enc, /* Encoding of z. 0 for BLOBs */ void (*xDel)(void*) /* Destructor function */ ){ - if( sqlite3VdbeMemSetStr(pCtx->pOut, z, n, enc, xDel)==SQLITE_TOOBIG ){ + Mem *pOut = pCtx->pOut; + int rc = sqlite3VdbeMemSetStr(pOut, z, n, enc, xDel); + if( rc ){ + if( rc==SQLITE_TOOBIG ){ + sqlite3_result_error_toobig(pCtx); + }else{ + /* The only errors possible from sqlite3VdbeMemSetStr are + ** SQLITE_TOOBIG and SQLITE_NOMEM */ + assert( rc==SQLITE_NOMEM ); + sqlite3_result_error_nomem(pCtx); + } + return; + } + sqlite3VdbeChangeEncoding(pOut, pCtx->enc); + if( sqlite3VdbeMemTooBig(pOut) ){ sqlite3_result_error_toobig(pCtx); } } @@ -80012,13 +89605,13 @@ static int invokeValueDestructor( }else{ xDel((void*)p); } - if( pCtx ) sqlite3_result_error_toobig(pCtx); + sqlite3_result_error_toobig(pCtx); return SQLITE_TOOBIG; } SQLITE_API void sqlite3_result_blob( - sqlite3_context *pCtx, - const void *z, - int n, + sqlite3_context *pCtx, + const void *z, + int n, void (*xDel)(void *) ){ assert( n>=0 ); @@ -80026,8 +89619,8 @@ SQLITE_API void sqlite3_result_blob( setResultStrOrError(pCtx, z, n, 0, xDel); } SQLITE_API void sqlite3_result_blob64( - sqlite3_context *pCtx, - const void *z, + sqlite3_context *pCtx, + const void *z, sqlite3_uint64 n, void (*xDel)(void *) ){ @@ -80086,8 +89679,8 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubt pOut->flags |= MEM_Subtype; } SQLITE_API void sqlite3_result_text( - sqlite3_context *pCtx, - const char *z, + sqlite3_context *pCtx, + const char *z, int n, void (*xDel)(void *) ){ @@ -80095,66 +89688,79 @@ SQLITE_API void sqlite3_result_text( setResultStrOrError(pCtx, z, n, SQLITE_UTF8, xDel); } SQLITE_API void sqlite3_result_text64( - sqlite3_context *pCtx, - const char *z, + sqlite3_context *pCtx, + const char *z, sqlite3_uint64 n, void (*xDel)(void *), unsigned char enc ){ assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); assert( xDel!=SQLITE_DYNAMIC ); - if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE; + if( enc!=SQLITE_UTF8 ){ + if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE; + n &= ~(u64)1; + } if( n>0x7fffffff ){ (void)invokeValueDestructor(z, xDel, pCtx); }else{ setResultStrOrError(pCtx, z, (int)n, enc, xDel); + sqlite3VdbeMemZeroTerminateIfAble(pCtx->pOut); } } #ifndef SQLITE_OMIT_UTF16 SQLITE_API void sqlite3_result_text16( - sqlite3_context *pCtx, - const void *z, - int n, + sqlite3_context *pCtx, + const void *z, + int n, void (*xDel)(void *) ){ assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); - setResultStrOrError(pCtx, z, n, SQLITE_UTF16NATIVE, xDel); + setResultStrOrError(pCtx, z, n & ~(u64)1, SQLITE_UTF16NATIVE, xDel); } SQLITE_API void sqlite3_result_text16be( - sqlite3_context *pCtx, - const void *z, - int n, + sqlite3_context *pCtx, + const void *z, + int n, void (*xDel)(void *) ){ assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); - setResultStrOrError(pCtx, z, n, SQLITE_UTF16BE, xDel); + setResultStrOrError(pCtx, z, n & ~(u64)1, SQLITE_UTF16BE, xDel); } SQLITE_API void sqlite3_result_text16le( - sqlite3_context *pCtx, - const void *z, - int n, + sqlite3_context *pCtx, + const void *z, + int n, void (*xDel)(void *) ){ assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); - setResultStrOrError(pCtx, z, n, SQLITE_UTF16LE, xDel); + setResultStrOrError(pCtx, z, n & ~(u64)1, SQLITE_UTF16LE, xDel); } #endif /* SQLITE_OMIT_UTF16 */ SQLITE_API void sqlite3_result_value(sqlite3_context *pCtx, sqlite3_value *pValue){ + Mem *pOut = pCtx->pOut; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); - sqlite3VdbeMemCopy(pCtx->pOut, pValue); + sqlite3VdbeMemCopy(pOut, pValue); + sqlite3VdbeChangeEncoding(pOut, pCtx->enc); + if( sqlite3VdbeMemTooBig(pOut) ){ + sqlite3_result_error_toobig(pCtx); + } } SQLITE_API void sqlite3_result_zeroblob(sqlite3_context *pCtx, int n){ - assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); - sqlite3VdbeMemSetZeroBlob(pCtx->pOut, n); + sqlite3_result_zeroblob64(pCtx, n>0 ? n : 0); } SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context *pCtx, u64 n){ Mem *pOut = pCtx->pOut; assert( sqlite3_mutex_held(pOut->db->mutex) ); if( n>(u64)pOut->db->aLimit[SQLITE_LIMIT_LENGTH] ){ + sqlite3_result_error_toobig(pCtx); return SQLITE_TOOBIG; } +#ifndef SQLITE_OMIT_INCRBLOB sqlite3VdbeMemSetZeroBlob(pCtx->pOut, (int)n); return SQLITE_OK; +#else + return sqlite3VdbeMemSetZeroBlob(pCtx->pOut, (int)n); +#endif } SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){ pCtx->isError = errCode ? errCode : -1; @@ -80162,8 +89768,8 @@ SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){ if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode; #endif if( pCtx->pOut->flags & MEM_Null ){ - sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1, - SQLITE_UTF8, SQLITE_STATIC); + setResultStrOrError(pCtx, sqlite3ErrStr(errCode), -1, SQLITE_UTF8, + SQLITE_STATIC); } } @@ -80171,7 +89777,7 @@ SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){ SQLITE_API void sqlite3_result_error_toobig(sqlite3_context *pCtx){ assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); pCtx->isError = SQLITE_TOOBIG; - sqlite3VdbeMemSetStr(pCtx->pOut, "string or blob too big", -1, + sqlite3VdbeMemSetStr(pCtx->pOut, "string or blob too big", -1, SQLITE_UTF8, SQLITE_STATIC); } @@ -80183,8 +89789,23 @@ SQLITE_API void sqlite3_result_error_nomem(sqlite3_context *pCtx){ sqlite3OomFault(pCtx->pOut->db); } +#ifndef SQLITE_UNTESTABLE +/* Force the INT64 value currently stored as the result to be +** a MEM_IntReal value. See the SQLITE_TESTCTRL_RESULT_INTREAL +** test-control. +*/ +SQLITE_PRIVATE void sqlite3ResultIntReal(sqlite3_context *pCtx){ + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + if( pCtx->pOut->flags & MEM_Int ){ + pCtx->pOut->flags &= ~MEM_Int; + pCtx->pOut->flags |= MEM_IntReal; + } +} +#endif + + /* -** This function is called after a transaction has been committed. It +** This function is called after a transaction has been committed. It ** invokes callbacks registered with sqlite3_wal_hook() as required. */ static int doWalCallbacks(sqlite3 *db){ @@ -80213,7 +89834,7 @@ static int doWalCallbacks(sqlite3 *db){ ** statement is completely executed or an error occurs. ** ** This routine implements the bulk of the logic behind the sqlite_step() -** API. The only thing omitted is the automatic recompile if a +** API. The only thing omitted is the automatic recompile if a ** schema change has occurred. That detail is handled by the ** outer sqlite3_step() wrapper procedure. */ @@ -80222,73 +89843,83 @@ static int sqlite3Step(Vdbe *p){ int rc; assert(p); - if( p->magic!=VDBE_MAGIC_RUN ){ - /* We used to require that sqlite3_reset() be called before retrying - ** sqlite3_step() after any error or after SQLITE_DONE. But beginning - ** with version 3.7.0, we changed this so that sqlite3_reset() would - ** be called automatically instead of throwing the SQLITE_MISUSE error. - ** This "automatic-reset" change is not technically an incompatibility, - ** since any application that receives an SQLITE_MISUSE is broken by - ** definition. - ** - ** Nevertheless, some published applications that were originally written - ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE - ** returns, and those were broken by the automatic-reset change. As a - ** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the - ** legacy behavior of returning SQLITE_MISUSE for cases where the - ** previous sqlite3_step() returned something other than a SQLITE_LOCKED - ** or SQLITE_BUSY error. - */ -#ifdef SQLITE_OMIT_AUTORESET - if( (rc = p->rc&0xff)==SQLITE_BUSY || rc==SQLITE_LOCKED ){ - sqlite3_reset((sqlite3_stmt*)p); - }else{ - return SQLITE_MISUSE_BKPT; - } -#else - sqlite3_reset((sqlite3_stmt*)p); -#endif - } - - /* Check that malloc() has not failed. If it has, return early. */ db = p->db; - if( db->mallocFailed ){ - p->rc = SQLITE_NOMEM; - return SQLITE_NOMEM_BKPT; - } + if( p->eVdbeState!=VDBE_RUN_STATE ){ + restart_step: + if( p->eVdbeState==VDBE_READY_STATE ){ + if( p->expired ){ + p->rc = SQLITE_SCHEMA; + rc = SQLITE_ERROR; + if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){ + /* If this statement was prepared using saved SQL and an + ** error has occurred, then return the error code in p->rc to the + ** caller. Set the error code in the database handle to the same + ** value. + */ + rc = sqlite3VdbeTransferError(p); + } + goto end_of_step; + } - if( p->pc<=0 && p->expired ){ - p->rc = SQLITE_SCHEMA; - rc = SQLITE_ERROR; - goto end_of_step; - } - if( p->pc<0 ){ - /* If there are no other statements currently running, then - ** reset the interrupt flag. This prevents a call to sqlite3_interrupt - ** from interrupting a statement that has not yet started. - */ - if( db->nVdbeActive==0 ){ - db->u1.isInterrupted = 0; - } + /* If there are no other statements currently running, then + ** reset the interrupt flag. This prevents a call to sqlite3_interrupt + ** from interrupting a statement that has not yet started. + */ + if( db->nVdbeActive==0 ){ + AtomicStore(&db->u1.isInterrupted, 0); + } - assert( db->nVdbeWrite>0 || db->autoCommit==0 - || (db->nDeferredCons==0 && db->nDeferredImmCons==0) - ); + assert( db->nVdbeWrite>0 || db->autoCommit==0 + || (db->nDeferredCons==0 && db->nDeferredImmCons==0) + ); #ifndef SQLITE_OMIT_TRACE - if( (db->xProfile || (db->mTrace & SQLITE_TRACE_PROFILE)!=0) - && !db->init.busy && p->zSql ){ - sqlite3OsCurrentTimeInt64(db->pVfs, &p->startTime); - }else{ - assert( p->startTime==0 ); - } + if( (db->mTrace & (SQLITE_TRACE_PROFILE|SQLITE_TRACE_XPROFILE))!=0 + && !db->init.busy && p->zSql ){ + sqlite3OsCurrentTimeInt64(db->pVfs, &p->startTime); + }else{ + assert( p->startTime==0 ); + } #endif - db->nVdbeActive++; - if( p->readOnly==0 ) db->nVdbeWrite++; - if( p->bIsReader ) db->nVdbeRead++; - p->pc = 0; + db->nVdbeActive++; + if( p->readOnly==0 ) db->nVdbeWrite++; + if( p->bIsReader ) db->nVdbeRead++; + p->pc = 0; + p->eVdbeState = VDBE_RUN_STATE; + }else + + if( ALWAYS(p->eVdbeState==VDBE_HALT_STATE) ){ + /* We used to require that sqlite3_reset() be called before retrying + ** sqlite3_step() after any error or after SQLITE_DONE. But beginning + ** with version 3.7.0, we changed this so that sqlite3_reset() would + ** be called automatically instead of throwing the SQLITE_MISUSE error. + ** This "automatic-reset" change is not technically an incompatibility, + ** since any application that receives an SQLITE_MISUSE is broken by + ** definition. + ** + ** Nevertheless, some published applications that were originally written + ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE + ** returns, and those were broken by the automatic-reset change. As a + ** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the + ** legacy behavior of returning SQLITE_MISUSE for cases where the + ** previous sqlite3_step() returned something other than a SQLITE_LOCKED + ** or SQLITE_BUSY error. + */ +#ifdef SQLITE_OMIT_AUTORESET + if( (rc = p->rc&0xff)==SQLITE_BUSY || rc==SQLITE_LOCKED ){ + sqlite3_reset((sqlite3_stmt*)p); + }else{ + return SQLITE_MISUSE_BKPT; + } +#else + sqlite3_reset((sqlite3_stmt*)p); +#endif + assert( p->eVdbeState==VDBE_READY_STATE ); + goto restart_step; + } } + #ifdef SQLITE_DEBUG p->rcApp = SQLITE_OK; #endif @@ -80303,45 +89934,44 @@ static int sqlite3Step(Vdbe *p){ db->nVdbeExec--; } -#ifndef SQLITE_OMIT_TRACE - /* If the statement completed successfully, invoke the profile callback */ - if( rc!=SQLITE_ROW ) checkProfileCallback(db, p); -#endif - - if( rc==SQLITE_DONE && db->autoCommit ){ + if( rc==SQLITE_ROW ){ assert( p->rc==SQLITE_OK ); - p->rc = doWalCallbacks(db); - if( p->rc!=SQLITE_OK ){ - rc = SQLITE_ERROR; + assert( db->mallocFailed==0 ); + db->errCode = SQLITE_ROW; + return SQLITE_ROW; + }else{ +#ifndef SQLITE_OMIT_TRACE + /* If the statement completed successfully, invoke the profile callback */ + checkProfileCallback(db, p); +#endif + p->pResultRow = 0; + if( rc==SQLITE_DONE && db->autoCommit ){ + assert( p->rc==SQLITE_OK ); + p->rc = doWalCallbacks(db); + if( p->rc!=SQLITE_OK ){ + rc = SQLITE_ERROR; + } + }else if( rc!=SQLITE_DONE && (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){ + /* If this statement was prepared using saved SQL and an + ** error has occurred, then return the error code in p->rc to the + ** caller. Set the error code in the database handle to the same value. + */ + rc = sqlite3VdbeTransferError(p); } } db->errCode = rc; if( SQLITE_NOMEM==sqlite3ApiExit(p->db, p->rc) ){ p->rc = SQLITE_NOMEM_BKPT; + if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ) rc = p->rc; } end_of_step: - /* At this point local variable rc holds the value that should be - ** returned if this statement was compiled using the legacy - ** sqlite3_prepare() interface. According to the docs, this can only - ** be one of the values in the first assert() below. Variable p->rc - ** contains the value that would be returned if sqlite3_finalize() - ** were called on statement p. - */ - assert( rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR + /* There are only a limited number of result codes allowed from the + ** statements prepared using the legacy sqlite3_prepare() interface */ + assert( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 + || rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR || (rc&0xff)==SQLITE_BUSY || rc==SQLITE_MISUSE ); - assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp ); - if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 - && rc!=SQLITE_ROW - && rc!=SQLITE_DONE - ){ - /* If this statement was prepared using saved SQL and an - ** error has occurred, then return the error code in p->rc to the - ** caller. Set the error code in the database handle to the same value. - */ - rc = sqlite3VdbeTransferError(p); - } return (rc&db->errMask); } @@ -80361,21 +89991,20 @@ SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){ } db = v->db; sqlite3_mutex_enter(db->mutex); - v->doingRerun = 0; while( (rc = sqlite3Step(v))==SQLITE_SCHEMA && cnt++ < SQLITE_MAX_SCHEMA_RETRY ){ int savedPc = v->pc; rc = sqlite3Reprepare(v); if( rc!=SQLITE_OK ){ - /* This case occurs after failing to recompile an sql statement. - ** The error message from the SQL compiler has already been loaded - ** into the database handle. This block copies the error message + /* This case occurs after failing to recompile an sql statement. + ** The error message from the SQL compiler has already been loaded + ** into the database handle. This block copies the error message ** from the database handle into the statement and sets the statement - ** program counter to 0 to ensure that when the statement is + ** program counter to 0 to ensure that when the statement is ** finalized or reset the parser error message is available via ** sqlite3_errmsg() and sqlite3_errcode(). */ - const char *zErr = (const char *)sqlite3_value_text(db->pErr); + const char *zErr = (const char *)sqlite3_value_text(db->pErr); sqlite3DbFree(db, v->zErrMsg); if( !db->mallocFailed ){ v->zErrMsg = sqlite3DbStrDup(db, zErr); @@ -80387,7 +90016,13 @@ SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){ break; } sqlite3_reset(pStmt); - if( savedPc>=0 ) v->doingRerun = 1; + if( savedPc>=0 ){ + /* Setting minWriteFileFormat to 254 is a signal to the OP_Init and + ** OP_Trace opcodes to *not* perform SQLITE_TRACE_STMT because it has + ** already been done once on a prior invocation that failed due to + ** SQLITE_SCHEMA. tag-20220401a */ + v->minWriteFileFormat = 254; + } assert( v->expired==0 ); } sqlite3_mutex_leave(db->mutex); @@ -80438,6 +90073,88 @@ SQLITE_API int sqlite3_vtab_nochange(sqlite3_context *p){ return sqlite3_value_nochange(p->pOut); } +/* +** The destructor function for a ValueList object. This needs to be +** a separate function, unknowable to the application, to ensure that +** calls to sqlite3_vtab_in_first()/sqlite3_vtab_in_next() that are not +** preceded by activation of IN processing via sqlite3_vtab_int() do not +** try to access a fake ValueList object inserted by a hostile extension. +*/ +SQLITE_PRIVATE void sqlite3VdbeValueListFree(void *pToDelete){ + sqlite3_free(pToDelete); +} + +/* +** Implementation of sqlite3_vtab_in_first() (if bNext==0) and +** sqlite3_vtab_in_next() (if bNext!=0). +*/ +static int valueFromValueList( + sqlite3_value *pVal, /* Pointer to the ValueList object */ + sqlite3_value **ppOut, /* Store the next value from the list here */ + int bNext /* 1 for _next(). 0 for _first() */ +){ + int rc; + ValueList *pRhs; + + *ppOut = 0; + if( pVal==0 ) return SQLITE_MISUSE; + if( (pVal->flags & MEM_Dyn)==0 || pVal->xDel!=sqlite3VdbeValueListFree ){ + return SQLITE_ERROR; + }else{ + assert( (pVal->flags&(MEM_TypeMask|MEM_Term|MEM_Subtype)) == + (MEM_Null|MEM_Term|MEM_Subtype) ); + assert( pVal->eSubtype=='p' ); + assert( pVal->u.zPType!=0 && strcmp(pVal->u.zPType,"ValueList")==0 ); + pRhs = (ValueList*)pVal->z; + } + if( bNext ){ + rc = sqlite3BtreeNext(pRhs->pCsr, 0); + }else{ + int dummy = 0; + rc = sqlite3BtreeFirst(pRhs->pCsr, &dummy); + assert( rc==SQLITE_OK || sqlite3BtreeEof(pRhs->pCsr) ); + if( sqlite3BtreeEof(pRhs->pCsr) ) rc = SQLITE_DONE; + } + if( rc==SQLITE_OK ){ + u32 sz; /* Size of current row in bytes */ + Mem sMem; /* Raw content of current row */ + memset(&sMem, 0, sizeof(sMem)); + sz = sqlite3BtreePayloadSize(pRhs->pCsr); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pRhs->pCsr,(int)sz,&sMem); + if( rc==SQLITE_OK ){ + u8 *zBuf = (u8*)sMem.z; + u32 iSerial; + sqlite3_value *pOut = pRhs->pOut; + int iOff = 1 + getVarint32(&zBuf[1], iSerial); + sqlite3VdbeSerialGet(&zBuf[iOff], iSerial, pOut); + pOut->enc = ENC(pOut->db); + if( (pOut->flags & MEM_Ephem)!=0 && sqlite3VdbeMemMakeWriteable(pOut) ){ + rc = SQLITE_NOMEM; + }else{ + *ppOut = pOut; + } + } + sqlite3VdbeMemRelease(&sMem); + } + return rc; +} + +/* +** Set the iterator value pVal to point to the first value in the set. +** Set (*ppOut) to point to this value before returning. +*/ +SQLITE_API int sqlite3_vtab_in_first(sqlite3_value *pVal, sqlite3_value **ppOut){ + return valueFromValueList(pVal, ppOut, 0); +} + +/* +** Set the iterator value pVal to point to the next value in the set. +** Set (*ppOut) to point to this value before returning. +*/ +SQLITE_API int sqlite3_vtab_in_next(sqlite3_value *pVal, sqlite3_value **ppOut){ + return valueFromValueList(pVal, ppOut, 1); +} + /* ** Return the current time for a statement. If the current time ** is requested more than once within the same run of a single prepared @@ -80447,7 +90164,7 @@ SQLITE_API int sqlite3_vtab_nochange(sqlite3_context *p){ */ SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){ int rc; -#ifndef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifndef SQLITE_ENABLE_STAT4 sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime; assert( p->pVdbe!=0 ); #else @@ -80512,7 +90229,7 @@ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ AuxData *pAuxData; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); -#if SQLITE_ENABLE_STAT3_OR_STAT4 +#if SQLITE_ENABLE_STAT4 if( pCtx->pVdbe==0 ) return 0; #else assert( pCtx->pVdbe!=0 ); @@ -80537,16 +90254,16 @@ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ ** access code. */ SQLITE_API void sqlite3_set_auxdata( - sqlite3_context *pCtx, - int iArg, - void *pAux, + sqlite3_context *pCtx, + int iArg, + void *pAux, void (*xDelete)(void*) ){ AuxData *pAuxData; Vdbe *pVdbe = pCtx->pVdbe; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 if( pVdbe==0 ) goto failed; #else assert( pVdbe!=0 ); @@ -80581,7 +90298,7 @@ failed: #ifndef SQLITE_OMIT_DEPRECATED /* -** Return the number of times the Step function of an aggregate has been +** Return the number of times the Step function of an aggregate has been ** called. ** ** This function is deprecated. Do not use it for new code. It is @@ -80600,7 +90317,8 @@ SQLITE_API int sqlite3_aggregate_count(sqlite3_context *p){ */ SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt){ Vdbe *pVm = (Vdbe *)pStmt; - return pVm ? pVm->nResColumn : 0; + if( pVm==0 ) return 0; + return pVm->nResColumn; } /* @@ -80609,7 +90327,7 @@ SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt){ */ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt){ Vdbe *pVm = (Vdbe *)pStmt; - if( pVm==0 || pVm->pResultSet==0 ) return 0; + if( pVm==0 || pVm->pResultRow==0 ) return 0; return pVm->nResColumn; } @@ -80626,25 +90344,25 @@ static const Mem *columnNullValue(void){ ** these assert()s from failing, when building with SQLITE_DEBUG defined ** using gcc, we force nullMem to be 8-byte aligned using the magical ** __attribute__((aligned(8))) macro. */ - static const Mem nullMem + static const Mem nullMem #if defined(SQLITE_DEBUG) && defined(__GNUC__) - __attribute__((aligned(8))) + __attribute__((aligned(8))) #endif = { /* .u = */ {0}, + /* .z = */ (char*)0, + /* .n = */ (int)0, /* .flags = */ (u16)MEM_Null, /* .enc = */ (u8)0, /* .eSubtype = */ (u8)0, - /* .n = */ (int)0, - /* .z = */ (char*)0, - /* .zMalloc = */ (char*)0, + /* .db = */ (sqlite3*)0, /* .szMalloc = */ (int)0, /* .uTemp = */ (u32)0, - /* .db = */ (sqlite3*)0, + /* .zMalloc = */ (char*)0, /* .xDel = */ (void(*)(void*))0, #ifdef SQLITE_DEBUG /* .pScopyFrom = */ (Mem*)0, - /* .pFiller = */ (void*)0, + /* .mScopyFlags= */ 0, #endif }; return &nullMem; @@ -80664,8 +90382,8 @@ static Mem *columnMem(sqlite3_stmt *pStmt, int i){ if( pVm==0 ) return (Mem*)columnNullValue(); assert( pVm->db ); sqlite3_mutex_enter(pVm->db->mutex); - if( pVm->pResultSet!=0 && inResColumn && i>=0 ){ - pOut = &pVm->pResultSet[i]; + if( pVm->pResultRow!=0 && inResColumn && i>=0 ){ + pOut = &pVm->pResultRow[i]; }else{ sqlite3Error(pVm->db, SQLITE_RANGE); pOut = (Mem*)columnNullValue(); @@ -80674,9 +90392,9 @@ static Mem *columnMem(sqlite3_stmt *pStmt, int i){ } /* -** This function is called after invoking an sqlite3_value_XXX function on a +** This function is called after invoking an sqlite3_value_XXX function on a ** column value (i.e. a value returned by evaluating an SQL expression in the -** select list of a SELECT statement) that may cause a malloc() failure. If +** select list of a SELECT statement) that may cause a malloc() failure. If ** malloc() has failed, the threads mallocFailed flag is cleared and the result ** code of statement pStmt set to SQLITE_NOMEM. ** @@ -80689,7 +90407,7 @@ static Mem *columnMem(sqlite3_stmt *pStmt, int i){ ** sqlite3_column_real() ** sqlite3_column_bytes() ** sqlite3_column_bytes16() -** sqiite3_column_blob() +** sqlite3_column_blob() */ static void columnMallocFailure(sqlite3_stmt *pStmt) { @@ -80715,8 +90433,8 @@ SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt *pStmt, int i){ const void *val; val = sqlite3_value_blob( columnMem(pStmt,i) ); /* Even though there is no encoding conversion, value_blob() might - ** need to call malloc() to expand the result of a zeroblob() - ** expression. + ** need to call malloc() to expand the result of a zeroblob() + ** expression. */ columnMallocFailure(pStmt); return val; @@ -80773,6 +90491,32 @@ SQLITE_API int sqlite3_column_type(sqlite3_stmt *pStmt, int i){ return iType; } +/* +** Column names appropriate for EXPLAIN or EXPLAIN QUERY PLAN. +*/ +static const char * const azExplainColNames8[] = { + "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment", /* EXPLAIN */ + "id", "parent", "notused", "detail" /* EQP */ +}; +static const u16 azExplainColNames16data[] = { + /* 0 */ 'a', 'd', 'd', 'r', 0, + /* 5 */ 'o', 'p', 'c', 'o', 'd', 'e', 0, + /* 12 */ 'p', '1', 0, + /* 15 */ 'p', '2', 0, + /* 18 */ 'p', '3', 0, + /* 21 */ 'p', '4', 0, + /* 24 */ 'p', '5', 0, + /* 27 */ 'c', 'o', 'm', 'm', 'e', 'n', 't', 0, + /* 35 */ 'i', 'd', 0, + /* 38 */ 'p', 'a', 'r', 'e', 'n', 't', 0, + /* 45 */ 'n', 'o', 't', 'u', 's', 'e', 'd', 0, + /* 53 */ 'd', 'e', 't', 'a', 'i', 'l', 0 +}; +static const u8 iExplainColNames16[] = { + 0, 5, 12, 15, 18, 21, 24, 27, + 35, 38, 45, 53 +}; + /* ** Convert the N-th element of pStmt->pColName[] into a string using ** xFunc() then return that string. If N is out of range, return 0. @@ -80790,10 +90534,10 @@ SQLITE_API int sqlite3_column_type(sqlite3_stmt *pStmt, int i){ ** or a constant) then useTypes 2, 3, and 4 return NULL. */ static const void *columnName( - sqlite3_stmt *pStmt, - int N, - const void *(*xFunc)(Mem*), - int useType + sqlite3_stmt *pStmt, /* The statement */ + int N, /* Which column to get the name for */ + int useUtf16, /* True to return the name as UTF16 */ + int useType /* What type of name */ ){ const void *ret; Vdbe *p; @@ -80805,25 +90549,48 @@ static const void *columnName( return 0; } #endif + if( N<0 ) return 0; ret = 0; p = (Vdbe *)pStmt; db = p->db; assert( db!=0 ); - n = sqlite3_column_count(pStmt); - if( N=0 ){ + sqlite3_mutex_enter(db->mutex); + + if( p->explain ){ + if( useType>0 ) goto columnName_end; + n = p->explain==1 ? 8 : 4; + if( N>=n ) goto columnName_end; + if( useUtf16 ){ + int i = iExplainColNames16[N + 8*p->explain - 8]; + ret = (void*)&azExplainColNames16data[i]; + }else{ + ret = (void*)azExplainColNames8[N + 8*p->explain - 8]; + } + goto columnName_end; + } + n = p->nResColumn; + if( NmallocFailed; N += useType*n; - sqlite3_mutex_enter(db->mutex); - assert( db->mallocFailed==0 ); - ret = xFunc(&p->aColName[N]); - /* A malloc may have failed inside of the xFunc() call. If this +#ifndef SQLITE_OMIT_UTF16 + if( useUtf16 ){ + ret = sqlite3_value_text16((sqlite3_value*)&p->aColName[N]); + }else +#endif + { + ret = sqlite3_value_text((sqlite3_value*)&p->aColName[N]); + } + /* A malloc may have failed inside of the _text() call. If this ** is the case, clear the mallocFailed flag and return NULL. */ - if( db->mallocFailed ){ + assert( db->mallocFailed==0 || db->mallocFailed==1 ); + if( db->mallocFailed > prior_mallocFailed ){ sqlite3OomClear(db); ret = 0; } - sqlite3_mutex_leave(db->mutex); } +columnName_end: + sqlite3_mutex_leave(db->mutex); return ret; } @@ -80832,13 +90599,11 @@ static const void *columnName( ** statement pStmt. */ SQLITE_API const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_NAME); + return columnName(pStmt, N, 0, COLNAME_NAME); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_NAME); + return columnName(pStmt, N, 1, COLNAME_NAME); } #endif @@ -80857,13 +90622,11 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt *pStmt, int N){ ** of the result set of SQL statement pStmt. */ SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_DECLTYPE); + return columnName(pStmt, N, 0, COLNAME_DECLTYPE); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_DECLTYPE); + return columnName(pStmt, N, 1, COLNAME_DECLTYPE); } #endif /* SQLITE_OMIT_UTF16 */ #endif /* SQLITE_OMIT_DECLTYPE */ @@ -80875,13 +90638,11 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){ ** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_DATABASE); + return columnName(pStmt, N, 0, COLNAME_DATABASE); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_DATABASE); + return columnName(pStmt, N, 1, COLNAME_DATABASE); } #endif /* SQLITE_OMIT_UTF16 */ @@ -80891,13 +90652,11 @@ SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt *pStmt, int N ** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_TABLE); + return columnName(pStmt, N, 0, COLNAME_TABLE); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_TABLE); + return columnName(pStmt, N, 1, COLNAME_TABLE); } #endif /* SQLITE_OMIT_UTF16 */ @@ -80907,26 +90666,24 @@ SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt *pStmt, int N){ ** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_COLUMN); + return columnName(pStmt, N, 0, COLNAME_COLUMN); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){ - return columnName( - pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_COLUMN); + return columnName(pStmt, N, 1, COLNAME_COLUMN); } #endif /* SQLITE_OMIT_UTF16 */ #endif /* SQLITE_ENABLE_COLUMN_METADATA */ /******************************* sqlite3_bind_ *************************** -** +** ** Routines used to attach values to wildcards in a compiled SQL statement. */ /* -** Unbind the value bound to variable i in virtual machine p. This is the +** Unbind the value bound to variable i in virtual machine p. This is the ** the same as binding a NULL value to the column. If the "i" parameter is -** out of range, then SQLITE_RANGE is returned. Othewise SQLITE_OK. +** out of range, then SQLITE_RANGE is returned. Otherwise SQLITE_OK. ** ** A successful evaluation of this routine acquires the mutex on p. ** the mutex is released if any kind of error occurs. @@ -80934,34 +90691,33 @@ SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){ ** The error code stored in database p->db is overwritten with the return ** value in any case. */ -static int vdbeUnbind(Vdbe *p, int i){ +static int vdbeUnbind(Vdbe *p, unsigned int i){ Mem *pVar; if( vdbeSafetyNotNull(p) ){ return SQLITE_MISUSE_BKPT; } sqlite3_mutex_enter(p->db->mutex); - if( p->magic!=VDBE_MAGIC_RUN || p->pc>=0 ){ + if( p->eVdbeState!=VDBE_READY_STATE ){ sqlite3Error(p->db, SQLITE_MISUSE); sqlite3_mutex_leave(p->db->mutex); - sqlite3_log(SQLITE_MISUSE, + sqlite3_log(SQLITE_MISUSE, "bind on a busy prepared statement: [%s]", p->zSql); return SQLITE_MISUSE_BKPT; } - if( i<1 || i>p->nVar ){ + if( i>=(unsigned int)p->nVar ){ sqlite3Error(p->db, SQLITE_RANGE); sqlite3_mutex_leave(p->db->mutex); return SQLITE_RANGE; } - i--; pVar = &p->aVar[i]; sqlite3VdbeMemRelease(pVar); pVar->flags = MEM_Null; - sqlite3Error(p->db, SQLITE_OK); + p->db->errCode = SQLITE_OK; - /* If the bit corresponding to this variable in Vdbe.expmask is set, then + /* If the bit corresponding to this variable in Vdbe.expmask is set, then ** binding a new value to this variable invalidates the current query plan. ** - ** IMPLEMENTATION-OF: R-48440-37595 If the specific value bound to host + ** IMPLEMENTATION-OF: R-57496-20354 If the specific value bound to a host ** parameter in the WHERE clause might influence the choice of query plan ** for a statement, then the statement will be automatically recompiled, ** as if there had been a schema change, on the first sqlite3_step() call @@ -80981,7 +90737,7 @@ static int bindText( sqlite3_stmt *pStmt, /* The statement to bind against */ int i, /* Index of the parameter to bind */ const void *zData, /* Pointer to the data to be bound */ - int nData, /* Number of bytes of data to be bound */ + i64 nData, /* Number of bytes of data to be bound */ void (*xDel)(void*), /* Destructor for the data */ u8 encoding /* Encoding for the data */ ){ @@ -80989,7 +90745,7 @@ static int bindText( Mem *pVar; int rc; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ if( zData!=0 ){ pVar = &p->aVar[i-1]; @@ -81014,10 +90770,10 @@ static int bindText( ** Bind a blob value to an SQL statement variable. */ SQLITE_API int sqlite3_bind_blob( - sqlite3_stmt *pStmt, - int i, - const void *zData, - int nData, + sqlite3_stmt *pStmt, + int i, + const void *zData, + int nData, void (*xDel)(void*) ){ #ifdef SQLITE_ENABLE_API_ARMOR @@ -81026,23 +90782,19 @@ SQLITE_API int sqlite3_bind_blob( return bindText(pStmt, i, zData, nData, xDel, 0); } SQLITE_API int sqlite3_bind_blob64( - sqlite3_stmt *pStmt, - int i, - const void *zData, - sqlite3_uint64 nData, + sqlite3_stmt *pStmt, + int i, + const void *zData, + sqlite3_uint64 nData, void (*xDel)(void*) ){ assert( xDel!=SQLITE_DYNAMIC ); - if( nData>0x7fffffff ){ - return invokeValueDestructor(zData, xDel, 0); - }else{ - return bindText(pStmt, i, zData, (int)nData, xDel, 0); - } + return bindText(pStmt, i, zData, nData, xDel, 0); } SQLITE_API int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){ int rc; Vdbe *p = (Vdbe *)pStmt; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ sqlite3VdbeMemSetDouble(&p->aVar[i-1], rValue); sqlite3_mutex_leave(p->db->mutex); @@ -81055,7 +90807,7 @@ SQLITE_API int sqlite3_bind_int(sqlite3_stmt *p, int i, int iValue){ SQLITE_API int sqlite3_bind_int64(sqlite3_stmt *pStmt, int i, sqlite_int64 iValue){ int rc; Vdbe *p = (Vdbe *)pStmt; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ sqlite3VdbeMemSetInt64(&p->aVar[i-1], iValue); sqlite3_mutex_leave(p->db->mutex); @@ -81065,7 +90817,7 @@ SQLITE_API int sqlite3_bind_int64(sqlite3_stmt *pStmt, int i, sqlite_int64 iValu SQLITE_API int sqlite3_bind_null(sqlite3_stmt *pStmt, int i){ int rc; Vdbe *p = (Vdbe*)pStmt; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ sqlite3_mutex_leave(p->db->mutex); } @@ -81080,7 +90832,7 @@ SQLITE_API int sqlite3_bind_pointer( ){ int rc; Vdbe *p = (Vdbe*)pStmt; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr, zPTtype, xDestructor); sqlite3_mutex_leave(p->db->mutex); @@ -81089,40 +90841,39 @@ SQLITE_API int sqlite3_bind_pointer( } return rc; } -SQLITE_API int sqlite3_bind_text( - sqlite3_stmt *pStmt, - int i, - const char *zData, - int nData, +SQLITE_API int sqlite3_bind_text( + sqlite3_stmt *pStmt, + int i, + const char *zData, + int nData, void (*xDel)(void*) ){ return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF8); } -SQLITE_API int sqlite3_bind_text64( - sqlite3_stmt *pStmt, - int i, - const char *zData, - sqlite3_uint64 nData, +SQLITE_API int sqlite3_bind_text64( + sqlite3_stmt *pStmt, + int i, + const char *zData, + sqlite3_uint64 nData, void (*xDel)(void*), unsigned char enc ){ assert( xDel!=SQLITE_DYNAMIC ); - if( nData>0x7fffffff ){ - return invokeValueDestructor(zData, xDel, 0); - }else{ + if( enc!=SQLITE_UTF8 ){ if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE; - return bindText(pStmt, i, zData, (int)nData, xDel, enc); + nData &= ~(u16)1; } + return bindText(pStmt, i, zData, nData, xDel, enc); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API int sqlite3_bind_text16( - sqlite3_stmt *pStmt, - int i, - const void *zData, - int nData, + sqlite3_stmt *pStmt, + int i, + const void *zData, + int n, void (*xDel)(void*) ){ - return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE); + return bindText(pStmt, i, zData, n & ~(u64)1, xDel, SQLITE_UTF16NATIVE); } #endif /* SQLITE_OMIT_UTF16 */ SQLITE_API int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_value *pValue){ @@ -81133,7 +90884,10 @@ SQLITE_API int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_valu break; } case SQLITE_FLOAT: { - rc = sqlite3_bind_double(pStmt, i, pValue->u.r); + assert( pValue->flags & (MEM_Real|MEM_IntReal) ); + rc = sqlite3_bind_double(pStmt, i, + (pValue->flags & MEM_Real) ? pValue->u.r : (double)pValue->u.i + ); break; } case SQLITE_BLOB: { @@ -81159,9 +90913,13 @@ SQLITE_API int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_valu SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt *pStmt, int i, int n){ int rc; Vdbe *p = (Vdbe *)pStmt; - rc = vdbeUnbind(p, i); + rc = vdbeUnbind(p, (u32)(i-1)); if( rc==SQLITE_OK ){ +#ifndef SQLITE_OMIT_INCRBLOB sqlite3VdbeMemSetZeroBlob(&p->aVar[i-1], n); +#else + rc = sqlite3VdbeMemSetZeroBlob(&p->aVar[i-1], n); +#endif sqlite3_mutex_leave(p->db->mutex); } return rc; @@ -81183,7 +90941,7 @@ SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt *pStmt, int i, sqlite3_uint6 /* ** Return the number of wildcards that can be potentially bound to. -** This routine is added to support DBD::SQLite. +** This routine is added to support DBD::SQLite. */ SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){ Vdbe *p = (Vdbe*)pStmt; @@ -81281,12 +91039,53 @@ SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt){ return pStmt ? ((Vdbe*)pStmt)->readOnly : 1; } +/* +** Return 1 if the statement is an EXPLAIN and return 2 if the +** statement is an EXPLAIN QUERY PLAN +*/ +SQLITE_API int sqlite3_stmt_isexplain(sqlite3_stmt *pStmt){ + return pStmt ? ((Vdbe*)pStmt)->explain : 0; +} + +/* +** Set the explain mode for a statement. +*/ +SQLITE_API int sqlite3_stmt_explain(sqlite3_stmt *pStmt, int eMode){ + Vdbe *v = (Vdbe*)pStmt; + int rc; + sqlite3_mutex_enter(v->db->mutex); + if( ((int)v->explain)==eMode ){ + rc = SQLITE_OK; + }else if( eMode<0 || eMode>2 ){ + rc = SQLITE_ERROR; + }else if( (v->prepFlags & SQLITE_PREPARE_SAVESQL)==0 ){ + rc = SQLITE_ERROR; + }else if( v->eVdbeState!=VDBE_READY_STATE ){ + rc = SQLITE_BUSY; + }else if( v->nMem>=10 && (eMode!=2 || v->haveEqpOps) ){ + /* No reprepare necessary */ + v->explain = eMode; + rc = SQLITE_OK; + }else{ + v->explain = eMode; + rc = sqlite3Reprepare(v); + v->haveEqpOps = eMode==2; + } + if( v->explain ){ + v->nResColumn = 12 - 4*v->explain; + }else{ + v->nResColumn = v->nResAlloc; + } + sqlite3_mutex_leave(v->db->mutex); + return rc; +} + /* ** Return true if the prepared statement is in need of being reset. */ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){ Vdbe *v = (Vdbe*)pStmt; - return v!=0 && v->magic==VDBE_MAGIC_RUN && v->pc>=0; + return v!=0 && v->eVdbeState==VDBE_RUN_STATE; } /* @@ -81307,7 +91106,7 @@ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){ if( pStmt==0 ){ pNext = (sqlite3_stmt*)pDb->pVdbe; }else{ - pNext = (sqlite3_stmt*)((Vdbe*)pStmt)->pNext; + pNext = (sqlite3_stmt*)((Vdbe*)pStmt)->pVNext; } sqlite3_mutex_leave(pDb->mutex); return pNext; @@ -81320,7 +91119,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){ Vdbe *pVdbe = (Vdbe*)pStmt; u32 v; #ifdef SQLITE_ENABLE_API_ARMOR - if( !pStmt + if( !pStmt || (op!=SQLITE_STMTSTATUS_MEMUSED && (op<0||op>=ArraySize(pVdbe->aCounter))) ){ (void)SQLITE_MISUSE_BKPT; @@ -81332,9 +91131,11 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){ sqlite3_mutex_enter(db->mutex); v = 0; db->pnBytesFreed = (int*)&v; - sqlite3VdbeClearObject(db, pVdbe); - sqlite3DbFree(db, pVdbe); + assert( db->lookaside.pEnd==db->lookaside.pTrueEnd ); + db->lookaside.pEnd = db->lookaside.pStart; + sqlite3VdbeDelete(pVdbe); db->pnBytesFreed = 0; + db->lookaside.pEnd = db->lookaside.pTrueEnd; sqlite3_mutex_leave(db->mutex); }else{ v = pVdbe->aCounter[op]; @@ -81376,6 +91177,22 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt){ #endif } +#ifdef SQLITE_ENABLE_NORMALIZE +/* +** Return the normalized SQL associated with a prepared statement. +*/ +SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt){ + Vdbe *p = (Vdbe *)pStmt; + if( p==0 ) return 0; + if( p->zNormSql==0 && ALWAYS(p->zSql!=0) ){ + sqlite3_mutex_enter(p->db->mutex); + p->zNormSql = sqlite3Normalize(p, p->zSql); + sqlite3_mutex_leave(p->db->mutex); + } + return p->zNormSql; +} +#endif /* SQLITE_ENABLE_NORMALIZE */ + #ifdef SQLITE_ENABLE_PREUPDATE_HOOK /* ** Allocate and populate an UnpackedRecord structure based on the serialized @@ -81383,8 +91200,8 @@ SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt){ ** if successful, or a NULL pointer if an OOM error is encountered. */ static UnpackedRecord *vdbeUnpackRecord( - KeyInfo *pKeyInfo, - int nKey, + KeyInfo *pKeyInfo, + int nKey, const void *pKey ){ UnpackedRecord *pRet; /* Return value */ @@ -81413,7 +91230,7 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppVa goto preupdate_old_out; } if( p->pPk ){ - iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx); + iIdx = sqlite3TableColumnToIndex(p->pPk, iIdx); } if( iIdx>=p->pCsr->nField || iIdx<0 ){ rc = SQLITE_RANGE; @@ -81425,6 +91242,7 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppVa u32 nRec; u8 *aRec; + assert( p->pCsr->eCurType==CURTYPE_BTREE ); nRec = sqlite3BtreePayloadSize(p->pCsr->uc.pCursor); aRec = sqlite3DbMallocRaw(db, nRec); if( !aRec ) goto preupdate_old_out; @@ -81446,7 +91264,9 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppVa }else if( iIdx>=p->pUnpacked->nField ){ *ppValue = (sqlite3_value *)columnNullValue(); }else if( p->pTab->aCol[iIdx].affinity==SQLITE_AFF_REAL ){ - if( pMem->flags & MEM_Int ){ + if( pMem->flags & (MEM_Int|MEM_IntReal) ){ + testcase( pMem->flags & MEM_Int ); + testcase( pMem->flags & MEM_IntReal ); sqlite3VdbeMemRealify(pMem); } } @@ -81474,7 +91294,7 @@ SQLITE_API int sqlite3_preupdate_count(sqlite3 *db){ ** only. It returns zero if the change that caused the callback was made ** immediately by a user SQL statement. Or, if the change was made by a ** trigger program, it returns the number of trigger programs currently -** on the stack (1 for a top-level trigger, 2 for a trigger fired by a +** on the stack (1 for a top-level trigger, 2 for a trigger fired by a ** top-level trigger etc.). ** ** For the purposes of the previous paragraph, a foreign key CASCADE, SET NULL @@ -81486,6 +91306,17 @@ SQLITE_API int sqlite3_preupdate_depth(sqlite3 *db){ } #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** This function is designed to be called from within a pre-update callback +** only. +*/ +SQLITE_API int sqlite3_preupdate_blobwrite(sqlite3 *db){ + PreUpdate *p = db->pPreUpdate; + return (p ? p->iBlobWrite : -1); +} +#endif + #ifdef SQLITE_ENABLE_PREUPDATE_HOOK /* ** This function is called from within a pre-update callback to retrieve @@ -81501,7 +91332,7 @@ SQLITE_API int sqlite3_preupdate_new(sqlite3 *db, int iIdx, sqlite3_value **ppVa goto preupdate_new_out; } if( p->pPk && p->op!=SQLITE_UPDATE ){ - iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx); + iIdx = sqlite3TableColumnToIndex(p->pPk, iIdx); } if( iIdx>=p->pCsr->nField || iIdx<0 ){ rc = SQLITE_RANGE; @@ -81566,23 +91397,69 @@ SQLITE_API int sqlite3_preupdate_new(sqlite3 *db, int iIdx, sqlite3_value **ppVa /* ** Return status data for a single loop within query pStmt. */ -SQLITE_API int sqlite3_stmt_scanstatus( +SQLITE_API int sqlite3_stmt_scanstatus_v2( sqlite3_stmt *pStmt, /* Prepared statement being queried */ - int idx, /* Index of loop to report on */ + int iScan, /* Index of loop to report on */ int iScanStatusOp, /* Which metric to return */ + int flags, void *pOut /* OUT: Write the answer here */ ){ Vdbe *p = (Vdbe*)pStmt; - ScanStatus *pScan; - if( idx<0 || idx>=p->nScan ) return 1; - pScan = &p->aScan[idx]; + VdbeOp *aOp = p->aOp; + int nOp = p->nOp; + ScanStatus *pScan = 0; + int idx; + + if( p->pFrame ){ + VdbeFrame *pFrame; + for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent); + aOp = pFrame->aOp; + nOp = pFrame->nOp; + } + + if( iScan<0 ){ + int ii; + if( iScanStatusOp==SQLITE_SCANSTAT_NCYCLE ){ + i64 res = 0; + for(ii=0; iiaScan[idx]; + }else{ + /* If the COMPLEX flag is clear, then this function must ignore any + ** ScanStatus structures with ScanStatus.addrLoop set to 0. */ + for(idx=0; idxnScan; idx++){ + pScan = &p->aScan[idx]; + if( pScan->zName ){ + iScan--; + if( iScan<0 ) break; + } + } + } + if( idx>=p->nScan ) return 1; + switch( iScanStatusOp ){ case SQLITE_SCANSTAT_NLOOP: { - *(sqlite3_int64*)pOut = p->anExec[pScan->addrLoop]; + if( pScan->addrLoop>0 ){ + *(sqlite3_int64*)pOut = aOp[pScan->addrLoop].nExec; + }else{ + *(sqlite3_int64*)pOut = -1; + } break; } case SQLITE_SCANSTAT_NVISIT: { - *(sqlite3_int64*)pOut = p->anExec[pScan->addrVisit]; + if( pScan->addrVisit>0 ){ + *(sqlite3_int64*)pOut = aOp[pScan->addrVisit].nExec; + }else{ + *(sqlite3_int64*)pOut = -1; + } break; } case SQLITE_SCANSTAT_EST: { @@ -81601,7 +91478,7 @@ SQLITE_API int sqlite3_stmt_scanstatus( } case SQLITE_SCANSTAT_EXPLAIN: { if( pScan->addrExplain ){ - *(const char**)pOut = p->aOp[ pScan->addrExplain ].p4.z; + *(const char**)pOut = aOp[ pScan->addrExplain ].p4.z; }else{ *(const char**)pOut = 0; } @@ -81609,12 +91486,51 @@ SQLITE_API int sqlite3_stmt_scanstatus( } case SQLITE_SCANSTAT_SELECTID: { if( pScan->addrExplain ){ - *(int*)pOut = p->aOp[ pScan->addrExplain ].p1; + *(int*)pOut = aOp[ pScan->addrExplain ].p1; }else{ *(int*)pOut = -1; } break; } + case SQLITE_SCANSTAT_PARENTID: { + if( pScan->addrExplain ){ + *(int*)pOut = aOp[ pScan->addrExplain ].p2; + }else{ + *(int*)pOut = -1; + } + break; + } + case SQLITE_SCANSTAT_NCYCLE: { + i64 res = 0; + if( pScan->aAddrRange[0]==0 ){ + res = -1; + }else{ + int ii; + for(ii=0; iiaAddrRange); ii+=2){ + int iIns = pScan->aAddrRange[ii]; + int iEnd = pScan->aAddrRange[ii+1]; + if( iIns==0 ) break; + if( iIns>0 ){ + while( iIns<=iEnd ){ + res += aOp[iIns].nCycle; + iIns++; + } + }else{ + int iOp; + for(iOp=0; iOpp1!=iEnd ) continue; + if( (sqlite3OpcodeProperty[pOp->opcode] & OPFLG_NCYCLE)==0 ){ + continue; + } + res += aOp[iOp].nCycle; + } + } + } + } + *(i64*)pOut = res; + break; + } default: { return 1; } @@ -81622,12 +91538,29 @@ SQLITE_API int sqlite3_stmt_scanstatus( return 0; } +/* +** Return status data for a single loop within query pStmt. +*/ +SQLITE_API int sqlite3_stmt_scanstatus( + sqlite3_stmt *pStmt, /* Prepared statement being queried */ + int iScan, /* Index of loop to report on */ + int iScanStatusOp, /* Which metric to return */ + void *pOut /* OUT: Write the answer here */ +){ + return sqlite3_stmt_scanstatus_v2(pStmt, iScan, iScanStatusOp, 0, pOut); +} + /* ** Zero all counters associated with the sqlite3_stmt_scanstatus() data. */ SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt *pStmt){ Vdbe *p = (Vdbe*)pStmt; - memset(p->anExec, 0, p->nOp * sizeof(i64)); + int ii; + for(ii=0; iinOp; ii++){ + Op *pOp = &p->aOp[ii]; + pOp->nExec = 0; + pOp->nCycle = 0; + } } #endif /* SQLITE_ENABLE_STMT_SCANSTATUS */ @@ -81683,8 +91616,8 @@ static int findNextHostParameter(const char *zSql, int *pnToken){ /* ** This function returns a pointer to a nul-terminated string in memory ** obtained from sqlite3DbMalloc(). If sqlite3.nVdbeExec is 1, then the -** string contains a copy of zRawSql but with host parameters expanded to -** their current bindings. Or, if sqlite3.nVdbeExec is greater than 1, +** string contains a copy of zRawSql but with host parameters expanded to +** their current bindings. Or, if sqlite3.nVdbeExec is greater than 1, ** then the returned string holds a copy of zRawSql with "-- " prepended ** to each line of text. ** @@ -81719,11 +91652,9 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( #ifndef SQLITE_OMIT_UTF16 Mem utf8; /* Used to convert UTF16 into UTF8 for display */ #endif - char zBase[100]; /* Initial working space */ db = p->db; - sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase), - db->aLimit[SQLITE_LIMIT_LENGTH]); + sqlite3StrAccumInit(&out, 0, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]); if( db->nVdbeExec>1 ){ while( *zRawSql ){ const char *zStart = zRawSql; @@ -81760,12 +91691,12 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( assert( idx>0 ); } zRawSql += nToken; - nextIndex = idx + 1; + nextIndex = MAX(idx + 1, nextIndex); assert( idx>0 && idx<=p->nVar ); pVar = &p->aVar[idx-1]; if( pVar->flags & MEM_Null ){ sqlite3_str_append(&out, "NULL", 4); - }else if( pVar->flags & MEM_Int ){ + }else if( pVar->flags & (MEM_Int|MEM_IntReal) ){ sqlite3_str_appendf(&out, "%lld", pVar->u.i); }else if( pVar->flags & MEM_Real ){ sqlite3_str_appendf(&out, "%!.15g", pVar->u.r); @@ -81790,7 +91721,7 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( nOut = SQLITE_TRACE_SIZE_LIMIT; while( nOutn && (pVar->z[nOut]&0xc0)==0x80 ){ nOut++; } } -#endif +#endif sqlite3_str_appendf(&out, "'%.*q'", nOut, pVar->z); #ifdef SQLITE_TRACE_SIZE_LIMIT if( nOutn ){ @@ -81949,48 +91880,107 @@ SQLITE_API int sqlite3_found_count = 0; # define UPDATE_MAX_BLOBSIZE(P) #endif +#ifdef SQLITE_DEBUG +/* This routine provides a convenient place to set a breakpoint during +** tracing with PRAGMA vdbe_trace=on. The breakpoint fires right after +** each opcode is printed. Variables "pc" (program counter) and pOp are +** available to add conditionals to the breakpoint. GDB example: +** +** break test_trace_breakpoint if pc=22 +** +** Other useful labels for breakpoints include: +** test_addop_breakpoint(pc,pOp) +** sqlite3CorruptError(lineno) +** sqlite3MisuseError(lineno) +** sqlite3CantopenError(lineno) +*/ +static void test_trace_breakpoint(int pc, Op *pOp, Vdbe *v){ + static int n = 0; + (void)pc; + (void)pOp; + (void)v; + n++; +} +#endif + /* ** Invoke the VDBE coverage callback, if that callback is defined. This ** feature is used for test suite validation only and does not appear an ** production builds. ** -** M is an integer, 2 or 3, that indices how many different ways the -** branch can go. It is usually 2. "I" is the direction the branch -** goes. 0 means falls through. 1 means branch is taken. 2 means the -** second alternative branch is taken. +** M is the type of branch. I is the direction taken for this instance of +** the branch. +** +** M: 2 - two-way branch (I=0: fall-thru 1: jump ) +** 3 - two-way + NULL (I=0: fall-thru 1: jump 2: NULL ) +** 4 - OP_Jump (I=0: jump p1 1: jump p2 2: jump p3) +** +** In other words, if M is 2, then I is either 0 (for fall-through) or +** 1 (for when the branch is taken). If M is 3, the I is 0 for an +** ordinary fall-through, I is 1 if the branch was taken, and I is 2 +** if the result of comparison is NULL. For M=3, I=2 the jump may or +** may not be taken, depending on the SQLITE_JUMPIFNULL flags in p5. +** When M is 4, that means that an OP_Jump is being run. I is 0, 1, or 2 +** depending on if the operands are less than, equal, or greater than. ** ** iSrcLine is the source code line (from the __LINE__ macro) that -** generated the VDBE instruction. This instrumentation assumes that all -** source code is in a single file (the amalgamation). Special values 1 -** and 2 for the iSrcLine parameter mean that this particular branch is -** always taken or never taken, respectively. +** generated the VDBE instruction combined with flag bits. The source +** code line number is in the lower 24 bits of iSrcLine and the upper +** 8 bytes are flags. The lower three bits of the flags indicate +** values for I that should never occur. For example, if the branch is +** always taken, the flags should be 0x05 since the fall-through and +** alternate branch are never taken. If a branch is never taken then +** flags should be 0x06 since only the fall-through approach is allowed. +** +** Bit 0x08 of the flags indicates an OP_Jump opcode that is only +** interested in equal or not-equal. In other words, I==0 and I==2 +** should be treated as equivalent +** +** Since only a line number is retained, not the filename, this macro +** only works for amalgamation builds. But that is ok, since these macros +** should be no-ops except for special builds used to measure test coverage. */ #if !defined(SQLITE_VDBE_COVERAGE) # define VdbeBranchTaken(I,M) #else # define VdbeBranchTaken(I,M) vdbeTakeBranch(pOp->iSrcLine,I,M) - static void vdbeTakeBranch(int iSrcLine, u8 I, u8 M){ - if( iSrcLine<=2 && ALWAYS(iSrcLine>0) ){ - M = iSrcLine; - /* Assert the truth of VdbeCoverageAlwaysTaken() and - ** VdbeCoverageNeverTaken() */ - assert( (M & I)==I ); - }else{ - if( sqlite3GlobalConfig.xVdbeBranch==0 ) return; /*NO_TEST*/ - sqlite3GlobalConfig.xVdbeBranch(sqlite3GlobalConfig.pVdbeBranchArg, - iSrcLine,I,M); + static void vdbeTakeBranch(u32 iSrcLine, u8 I, u8 M){ + u8 mNever; + assert( I<=2 ); /* 0: fall through, 1: taken, 2: alternate taken */ + assert( M<=4 ); /* 2: two-way branch, 3: three-way branch, 4: OP_Jump */ + assert( I> 24; + assert( (I & mNever)==0 ); + if( sqlite3GlobalConfig.xVdbeBranch==0 ) return; /*NO_TEST*/ + /* Invoke the branch coverage callback with three arguments: + ** iSrcLine - the line number of the VdbeCoverage() macro, with + ** flags removed. + ** I - Mask of bits 0x07 indicating which cases are are + ** fulfilled by this instance of the jump. 0x01 means + ** fall-thru, 0x02 means taken, 0x04 means NULL. Any + ** impossible cases (ex: if the comparison is never NULL) + ** are filled in automatically so that the coverage + ** measurement logic does not flag those impossible cases + ** as missed coverage. + ** M - Type of jump. Same as M argument above + */ + I |= mNever; + if( M==2 ) I |= 0x04; + if( M==4 ){ + I |= 0x08; + if( (mNever&0x08)!=0 && (I&0x05)!=0) I |= 0x05; /*NO_TEST*/ } + sqlite3GlobalConfig.xVdbeBranch(sqlite3GlobalConfig.pVdbeBranchArg, + iSrcLine&0xffffff, I, M); } #endif -/* -** Convert the given register into a string if it isn't one -** already. Return non-zero if a malloc() fails. -*/ -#define Stringify(P, enc) \ - if(((P)->flags&(MEM_Str|MEM_Blob))==0 && sqlite3VdbeMemStringify(P,enc,0)) \ - { goto no_mem; } - /* ** An ephemeral string value (signified by the MEM_Ephem flag) contains ** a pointer to a dynamically allocated string where some other entity @@ -82017,11 +92007,10 @@ static VdbeCursor *allocateCursor( Vdbe *p, /* The virtual machine */ int iCur, /* Index of the new VdbeCursor */ int nField, /* Number of fields in the table or index */ - int iDb, /* Database the cursor belongs to, or -1 */ u8 eCurType /* Type of the new cursor */ ){ /* Find the memory cell that will be used to store the blob of memory - ** required for this VdbeCursor structure. It is convenient to use a + ** required for this VdbeCursor structure. It is convenient to use a ** vdbe memory cell to manage the memory allocation required for a ** VdbeCursor structure for the following reasons: ** @@ -82042,31 +92031,64 @@ static VdbeCursor *allocateCursor( int nByte; VdbeCursor *pCx = 0; - nByte = - ROUND8(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField + + nByte = + ROUND8P(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField + (eCurType==CURTYPE_BTREE?sqlite3BtreeCursorSize():0); assert( iCur>=0 && iCurnCursor ); if( p->apCsr[iCur] ){ /*OPTIMIZATION-IF-FALSE*/ - sqlite3VdbeFreeCursor(p, p->apCsr[iCur]); + sqlite3VdbeFreeCursorNN(p, p->apCsr[iCur]); p->apCsr[iCur] = 0; } - if( SQLITE_OK==sqlite3VdbeMemClearAndResize(pMem, nByte) ){ - p->apCsr[iCur] = pCx = (VdbeCursor*)pMem->z; - memset(pCx, 0, offsetof(VdbeCursor,pAltCursor)); - pCx->eCurType = eCurType; - pCx->iDb = iDb; - pCx->nField = nField; - pCx->aOffset = &pCx->aType[nField]; - if( eCurType==CURTYPE_BTREE ){ - pCx->uc.pCursor = (BtCursor*) - &pMem->z[ROUND8(sizeof(VdbeCursor))+2*sizeof(u32)*nField]; - sqlite3BtreeCursorZero(pCx->uc.pCursor); + + /* There used to be a call to sqlite3VdbeMemClearAndResize() to make sure + ** the pMem used to hold space for the cursor has enough storage available + ** in pMem->zMalloc. But for the special case of the aMem[] entries used + ** to hold cursors, it is faster to in-line the logic. */ + assert( pMem->flags==MEM_Undefined ); + assert( (pMem->flags & MEM_Dyn)==0 ); + assert( pMem->szMalloc==0 || pMem->z==pMem->zMalloc ); + if( pMem->szMallocszMalloc>0 ){ + sqlite3DbFreeNN(pMem->db, pMem->zMalloc); } + pMem->z = pMem->zMalloc = sqlite3DbMallocRaw(pMem->db, nByte); + if( pMem->zMalloc==0 ){ + pMem->szMalloc = 0; + return 0; + } + pMem->szMalloc = nByte; + } + + p->apCsr[iCur] = pCx = (VdbeCursor*)pMem->zMalloc; + memset(pCx, 0, offsetof(VdbeCursor,pAltCursor)); + pCx->eCurType = eCurType; + pCx->nField = nField; + pCx->aOffset = &pCx->aType[nField]; + if( eCurType==CURTYPE_BTREE ){ + pCx->uc.pCursor = (BtCursor*) + &pMem->z[ROUND8P(sizeof(VdbeCursor))+2*sizeof(u32)*nField]; + sqlite3BtreeCursorZero(pCx->uc.pCursor); } return pCx; } +/* +** The string in pRec is known to look like an integer and to have a +** floating point value of rValue. Return true and set *piValue to the +** integer value if the string is in range to be an integer. Otherwise, +** return false. +*/ +static int alsoAnInt(Mem *pRec, double rValue, i64 *piValue){ + i64 iValue; + iValue = sqlite3RealToI64(rValue); + if( sqlite3RealSameAsInt(rValue,iValue) ){ + *piValue = iValue; + return 1; + } + return 0==sqlite3Atoi64(pRec->z, piValue, pRec->n, pRec->enc); +} + /* ** Try to convert a value into a numeric representation if we can ** do so without loss of information. In other words, if the string @@ -82084,12 +92106,12 @@ static VdbeCursor *allocateCursor( */ static void applyNumericAffinity(Mem *pRec, int bTryForInt){ double rValue; - i64 iValue; u8 enc = pRec->enc; - assert( (pRec->flags & (MEM_Str|MEM_Int|MEM_Real))==MEM_Str ); - if( sqlite3AtoF(pRec->z, &rValue, pRec->n, enc)==0 ) return; - if( 0==sqlite3Atoi64(pRec->z, &iValue, pRec->n, enc) ){ - pRec->u.i = iValue; + int rc; + assert( (pRec->flags & (MEM_Str|MEM_Int|MEM_Real|MEM_IntReal))==MEM_Str ); + rc = sqlite3AtoF(pRec->z, &rValue, pRec->n, enc); + if( rc<=0 ) return; + if( rc==1 && alsoAnInt(pRec, rValue, &pRec->u.i) ){ pRec->flags |= MEM_Int; }else{ pRec->u.r = rValue; @@ -82109,16 +92131,21 @@ static void applyNumericAffinity(Mem *pRec, int bTryForInt){ ** SQLITE_AFF_INTEGER: ** SQLITE_AFF_REAL: ** SQLITE_AFF_NUMERIC: -** Try to convert pRec to an integer representation or a +** Try to convert pRec to an integer representation or a ** floating-point representation if an integer representation ** is not possible. Note that the integer representation is ** always preferred, even if the affinity is REAL, because ** an integer representation is more space efficient on disk. ** +** SQLITE_AFF_FLEXNUM: +** If the value is text, then try to convert it into a number of +** some kind (integer or real) but do not make any other changes. +** ** SQLITE_AFF_TEXT: ** Convert pRec to a text representation. ** ** SQLITE_AFF_BLOB: +** SQLITE_AFF_NONE: ** No-op. pRec is unchanged. */ static void applyAffinity( @@ -82128,26 +92155,29 @@ static void applyAffinity( ){ if( affinity>=SQLITE_AFF_NUMERIC ){ assert( affinity==SQLITE_AFF_INTEGER || affinity==SQLITE_AFF_REAL - || affinity==SQLITE_AFF_NUMERIC ); + || affinity==SQLITE_AFF_NUMERIC || affinity==SQLITE_AFF_FLEXNUM ); if( (pRec->flags & MEM_Int)==0 ){ /*OPTIMIZATION-IF-FALSE*/ - if( (pRec->flags & MEM_Real)==0 ){ + if( (pRec->flags & (MEM_Real|MEM_IntReal))==0 ){ if( pRec->flags & MEM_Str ) applyNumericAffinity(pRec,1); - }else{ + }else if( affinity<=SQLITE_AFF_REAL ){ sqlite3VdbeIntegerAffinity(pRec); } } }else if( affinity==SQLITE_AFF_TEXT ){ /* Only attempt the conversion to TEXT if there is an integer or real ** representation (blob and NULL do not get converted) but no string - ** representation. It would be harmless to repeat the conversion if + ** representation. It would be harmless to repeat the conversion if ** there is already a string rep, but it is pointless to waste those ** CPU cycles. */ if( 0==(pRec->flags&MEM_Str) ){ /*OPTIMIZATION-IF-FALSE*/ - if( (pRec->flags&(MEM_Real|MEM_Int)) ){ + if( (pRec->flags&(MEM_Real|MEM_Int|MEM_IntReal)) ){ + testcase( pRec->flags & MEM_Int ); + testcase( pRec->flags & MEM_Real ); + testcase( pRec->flags & MEM_IntReal ); sqlite3VdbeMemStringify(pRec, enc, 1); } } - pRec->flags &= ~(MEM_Real|MEM_Int); + pRec->flags &= ~(MEM_Real|MEM_Int|MEM_IntReal); } } @@ -82168,12 +92198,12 @@ SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){ } /* -** Exported version of applyAffinity(). This one works on sqlite3_value*, +** Exported version of applyAffinity(). This one works on sqlite3_value*, ** not the internal Mem* type. */ SQLITE_PRIVATE void sqlite3ValueApplyAffinity( - sqlite3_value *pVal, - u8 affinity, + sqlite3_value *pVal, + u8 affinity, u8 enc ){ applyAffinity((Mem *)pVal, affinity, enc); @@ -82186,12 +92216,24 @@ SQLITE_PRIVATE void sqlite3ValueApplyAffinity( ** accordingly. */ static u16 SQLITE_NOINLINE computeNumericType(Mem *pMem){ - assert( (pMem->flags & (MEM_Int|MEM_Real))==0 ); + int rc; + sqlite3_int64 ix; + assert( (pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal))==0 ); assert( (pMem->flags & (MEM_Str|MEM_Blob))!=0 ); - if( sqlite3AtoF(pMem->z, &pMem->u.r, pMem->n, pMem->enc)==0 ){ - return 0; + if( ExpandBlob(pMem) ){ + pMem->u.i = 0; + return MEM_Int; } - if( sqlite3Atoi64(pMem->z, &pMem->u.i, pMem->n, pMem->enc)==0 ){ + rc = sqlite3AtoF(pMem->z, &pMem->u.r, pMem->n, pMem->enc); + if( rc<=0 ){ + if( rc==0 && sqlite3Atoi64(pMem->z, &ix, pMem->n, pMem->enc)<=1 ){ + pMem->u.i = ix; + return MEM_Int; + }else{ + return MEM_Real; + } + }else if( rc==1 && sqlite3Atoi64(pMem->z, &ix, pMem->n, pMem->enc)==0 ){ + pMem->u.i = ix; return MEM_Int; } return MEM_Real; @@ -82199,18 +92241,24 @@ static u16 SQLITE_NOINLINE computeNumericType(Mem *pMem){ /* ** Return the numeric type for pMem, either MEM_Int or MEM_Real or both or -** none. +** none. ** ** Unlike applyNumericAffinity(), this routine does not modify pMem->flags. ** But it does set pMem->u.r and pMem->u.i appropriately. */ static u16 numericType(Mem *pMem){ - if( pMem->flags & (MEM_Int|MEM_Real) ){ - return pMem->flags & (MEM_Int|MEM_Real); - } - if( pMem->flags & (MEM_Str|MEM_Blob) ){ - return computeNumericType(pMem); + assert( (pMem->flags & MEM_Null)==0 + || pMem->db==0 || pMem->db->mallocFailed ); + if( pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null) ){ + testcase( pMem->flags & MEM_Int ); + testcase( pMem->flags & MEM_Real ); + testcase( pMem->flags & MEM_IntReal ); + return pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null); } + assert( pMem->flags & (MEM_Str|MEM_Blob) ); + testcase( pMem->flags & MEM_Str ); + testcase( pMem->flags & MEM_Blob ); + return computeNumericType(pMem); return 0; } @@ -82219,12 +92267,9 @@ static u16 numericType(Mem *pMem){ ** Write a nice string representation of the contents of cell pMem ** into buffer zBuf, length nBuf. */ -SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){ - char *zCsr = zBuf; +SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr){ int f = pMem->flags; - static const char *const encnames[] = {"(X)", "(8)", "(16LE)", "(16BE)"}; - if( f&MEM_Blob ){ int i; char c; @@ -82240,55 +92285,43 @@ SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){ }else{ c = 's'; } - *(zCsr++) = c; - sqlite3_snprintf(100, zCsr, "%d[", pMem->n); - zCsr += sqlite3Strlen30(zCsr); - for(i=0; i<16 && in; i++){ - sqlite3_snprintf(100, zCsr, "%02X", ((int)pMem->z[i] & 0xFF)); - zCsr += sqlite3Strlen30(zCsr); + sqlite3_str_appendf(pStr, "%cx[", c); + for(i=0; i<25 && in; i++){ + sqlite3_str_appendf(pStr, "%02X", ((int)pMem->z[i] & 0xFF)); } - for(i=0; i<16 && in; i++){ + sqlite3_str_appendf(pStr, "|"); + for(i=0; i<25 && in; i++){ char z = pMem->z[i]; - if( z<32 || z>126 ) *zCsr++ = '.'; - else *zCsr++ = z; + sqlite3_str_appendchar(pStr, 1, (z<32||z>126)?'.':z); } - *(zCsr++) = ']'; + sqlite3_str_appendf(pStr,"]"); if( f & MEM_Zero ){ - sqlite3_snprintf(100, zCsr,"+%dz",pMem->u.nZero); - zCsr += sqlite3Strlen30(zCsr); + sqlite3_str_appendf(pStr, "+%dz",pMem->u.nZero); } - *zCsr = '\0'; }else if( f & MEM_Str ){ - int j, k; - zBuf[0] = ' '; + int j; + u8 c; if( f & MEM_Dyn ){ - zBuf[1] = 'z'; + c = 'z'; assert( (f & (MEM_Static|MEM_Ephem))==0 ); }else if( f & MEM_Static ){ - zBuf[1] = 't'; + c = 't'; assert( (f & (MEM_Dyn|MEM_Ephem))==0 ); }else if( f & MEM_Ephem ){ - zBuf[1] = 'e'; + c = 'e'; assert( (f & (MEM_Static|MEM_Dyn))==0 ); }else{ - zBuf[1] = 's'; + c = 's'; } - k = 2; - sqlite3_snprintf(100, &zBuf[k], "%d", pMem->n); - k += sqlite3Strlen30(&zBuf[k]); - zBuf[k++] = '['; - for(j=0; j<15 && jn; j++){ - u8 c = pMem->z[j]; - if( c>=0x20 && c<0x7f ){ - zBuf[k++] = c; - }else{ - zBuf[k++] = '.'; - } + sqlite3_str_appendf(pStr, " %c%d[", c, pMem->n); + for(j=0; j<25 && jn; j++){ + c = pMem->z[j]; + sqlite3_str_appendchar(pStr, 1, (c>=0x20&&c<=0x7f) ? c : '.'); + } + sqlite3_str_appendf(pStr, "]%s", encnames[pMem->enc]); + if( f & MEM_Term ){ + sqlite3_str_appendf(pStr, "(0-term)"); } - zBuf[k++] = ']'; - sqlite3_snprintf(100,&zBuf[k], encnames[pMem->enc]); - k += sqlite3Strlen30(&zBuf[k]); - zBuf[k++] = 0; } } #endif @@ -82304,142 +92337,66 @@ static void memTracePrint(Mem *p){ printf(p->flags & MEM_Zero ? " NULL-nochng" : " NULL"); }else if( (p->flags & (MEM_Int|MEM_Str))==(MEM_Int|MEM_Str) ){ printf(" si:%lld", p->u.i); + }else if( (p->flags & (MEM_IntReal))!=0 ){ + printf(" ir:%lld", p->u.i); }else if( p->flags & MEM_Int ){ printf(" i:%lld", p->u.i); #ifndef SQLITE_OMIT_FLOATING_POINT }else if( p->flags & MEM_Real ){ - printf(" r:%g", p->u.r); + printf(" r:%.17g", p->u.r); #endif - }else if( p->flags & MEM_RowSet ){ + }else if( sqlite3VdbeMemIsRowSet(p) ){ printf(" (rowset)"); }else{ - char zBuf[200]; - sqlite3VdbeMemPrettyPrint(p, zBuf); - printf(" %s", zBuf); + StrAccum acc; + char zBuf[1000]; + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); + sqlite3VdbeMemPrettyPrint(p, &acc); + printf(" %s", sqlite3StrAccumFinish(&acc)); } if( p->flags & MEM_Subtype ) printf(" subtype=0x%02x", p->eSubtype); } static void registerTrace(int iReg, Mem *p){ - printf("REG[%d] = ", iReg); + printf("R[%d] = ", iReg); memTracePrint(p); + if( p->pScopyFrom ){ + printf(" <== R[%d]", (int)(p->pScopyFrom - &p[-iReg])); + } printf("\n"); sqlite3VdbeCheckMemInvariants(p); } +/**/ void sqlite3PrintMem(Mem *pMem){ + memTracePrint(pMem); + printf("\n"); + fflush(stdout); +} #endif +#ifdef SQLITE_DEBUG +/* +** Show the values of all registers in the virtual machine. Used for +** interactive debugging. +*/ +SQLITE_PRIVATE void sqlite3VdbeRegisterDump(Vdbe *v){ + int i; + for(i=1; inMem; i++) registerTrace(i, v->aMem+i); +} +#endif /* SQLITE_DEBUG */ + + #ifdef SQLITE_DEBUG # define REGISTER_TRACE(R,M) if(db->flags&SQLITE_VdbeTrace)registerTrace(R,M) #else # define REGISTER_TRACE(R,M) #endif - -#ifdef VDBE_PROFILE - -/* -** hwtime.h contains inline assembler code for implementing -** high-performance timing routines. -*/ -/************** Include hwtime.h in the middle of vdbe.c *********************/ -/************** Begin file hwtime.h ******************************************/ -/* -** 2008 May 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains inline asm code for retrieving "high-performance" -** counters for x86 class CPUs. -*/ -#ifndef SQLITE_HWTIME_H -#define SQLITE_HWTIME_H - -/* -** The following routine only works on pentium-class (or newer) processors. -** It uses the RDTSC opcode to read the cycle count value out of the -** processor and returns that value. This can be used for high-res -** profiling. -*/ -#if (defined(__GNUC__) || defined(_MSC_VER)) && \ - (defined(i386) || defined(__i386__) || defined(_M_IX86)) - - #if defined(__GNUC__) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned int lo, hi; - __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); - return (sqlite_uint64)hi << 32 | lo; - } - - #elif defined(_MSC_VER) - - __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ - __asm { - rdtsc - ret ; return value at EDX:EAX - } - } - - #endif - -#elif (defined(__GNUC__) && defined(__x86_64__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long val; - __asm__ __volatile__ ("rdtsc" : "=A" (val)); - return val; - } - -#elif (defined(__GNUC__) && defined(__ppc__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long long retval; - unsigned long junk; - __asm__ __volatile__ ("\n\ - 1: mftbu %1\n\ - mftb %L0\n\ - mftbu %0\n\ - cmpw %0,%1\n\ - bne 1b" - : "=r" (retval), "=r" (junk)); - return retval; - } - -#else - - #error Need implementation of sqlite3Hwtime() for your platform. - - /* - ** To compile without implementing sqlite3Hwtime() for your platform, - ** you can remove the above #error and use the following - ** stub function. You will lose timing support for many - ** of the debugging and testing utilities, but it should at - ** least compile and run. - */ -SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } - -#endif - -#endif /* !defined(SQLITE_HWTIME_H) */ - -/************** End of hwtime.h **********************************************/ -/************** Continuing where we left off in vdbe.c ***********************/ - -#endif - #ifndef NDEBUG /* ** This function is only called from within an assert() expression. It ** checks that the sqlite3.nTransaction variable is correctly set to -** the number of non-transaction savepoints currently in the +** the number of non-transaction savepoints currently in the ** linked list starting at sqlite3.pSavepoint. -** +** ** Usage: ** ** assert( checkSavepointCount(db) ); @@ -82476,65 +92433,194 @@ static Mem *out2Prerelease(Vdbe *p, VdbeOp *pOp){ } } +/* +** Compute a bloom filter hash using pOp->p4.i registers from aMem[] beginning +** with pOp->p3. Return the hash. +*/ +static u64 filterHash(const Mem *aMem, const Op *pOp){ + int i, mx; + u64 h = 0; + + assert( pOp->p4type==P4_INT32 ); + for(i=pOp->p3, mx=i+pOp->p4.i; iflags & (MEM_Int|MEM_IntReal) ){ + h += p->u.i; + }else if( p->flags & MEM_Real ){ + h += sqlite3VdbeIntValue(p); + }else if( p->flags & (MEM_Str|MEM_Blob) ){ + /* All strings have the same hash and all blobs have the same hash, + ** though, at least, those hashes are different from each other and + ** from NULL. */ + h += 4093 + (p->flags & (MEM_Str|MEM_Blob)); + } + } + return h; +} + + +/* +** For OP_Column, factor out the case where content is loaded from +** overflow pages, so that the code to implement this case is separate +** the common case where all content fits on the page. Factoring out +** the code reduces register pressure and helps the common case +** to run faster. +*/ +static SQLITE_NOINLINE int vdbeColumnFromOverflow( + VdbeCursor *pC, /* The BTree cursor from which we are reading */ + int iCol, /* The column to read */ + int t, /* The serial-type code for the column value */ + i64 iOffset, /* Offset to the start of the content value */ + u32 cacheStatus, /* Current Vdbe.cacheCtr value */ + u32 colCacheCtr, /* Current value of the column cache counter */ + Mem *pDest /* Store the value into this register. */ +){ + int rc; + sqlite3 *db = pDest->db; + int encoding = pDest->enc; + int len = sqlite3VdbeSerialTypeLen(t); + assert( pC->eCurType==CURTYPE_BTREE ); + if( len>db->aLimit[SQLITE_LIMIT_LENGTH] ) return SQLITE_TOOBIG; + if( len > 4000 && pC->pKeyInfo==0 ){ + /* Cache large column values that are on overflow pages using + ** an RCStr (reference counted string) so that if they are reloaded, + ** that do not have to be copied a second time. The overhead of + ** creating and managing the cache is such that this is only + ** profitable for larger TEXT and BLOB values. + ** + ** Only do this on table-btrees so that writes to index-btrees do not + ** need to clear the cache. This buys performance in the common case + ** in exchange for generality. + */ + VdbeTxtBlbCache *pCache; + char *pBuf; + if( pC->colCache==0 ){ + pC->pCache = sqlite3DbMallocZero(db, sizeof(VdbeTxtBlbCache) ); + if( pC->pCache==0 ) return SQLITE_NOMEM; + pC->colCache = 1; + } + pCache = pC->pCache; + if( pCache->pCValue==0 + || pCache->iCol!=iCol + || pCache->cacheStatus!=cacheStatus + || pCache->colCacheCtr!=colCacheCtr + || pCache->iOffset!=sqlite3BtreeOffset(pC->uc.pCursor) + ){ + if( pCache->pCValue ) sqlite3RCStrUnref(pCache->pCValue); + pBuf = pCache->pCValue = sqlite3RCStrNew( len+3 ); + if( pBuf==0 ) return SQLITE_NOMEM; + rc = sqlite3BtreePayload(pC->uc.pCursor, iOffset, len, pBuf); + if( rc ) return rc; + pBuf[len] = 0; + pBuf[len+1] = 0; + pBuf[len+2] = 0; + pCache->iCol = iCol; + pCache->cacheStatus = cacheStatus; + pCache->colCacheCtr = colCacheCtr; + pCache->iOffset = sqlite3BtreeOffset(pC->uc.pCursor); + }else{ + pBuf = pCache->pCValue; + } + assert( t>=12 ); + sqlite3RCStrRef(pBuf); + if( t&1 ){ + rc = sqlite3VdbeMemSetStr(pDest, pBuf, len, encoding, + (void(*)(void*))sqlite3RCStrUnref); + pDest->flags |= MEM_Term; + }else{ + rc = sqlite3VdbeMemSetStr(pDest, pBuf, len, 0, + (void(*)(void*))sqlite3RCStrUnref); + } + }else{ + rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, iOffset, len, pDest); + if( rc ) return rc; + sqlite3VdbeSerialGet((const u8*)pDest->z, t, pDest); + if( (t&1)!=0 && encoding==SQLITE_UTF8 ){ + pDest->z[len] = 0; + pDest->flags |= MEM_Term; + } + } + pDest->flags &= ~MEM_Ephem; + return rc; +} + + +/* +** Return the symbolic name for the data type of a pMem +*/ +static const char *vdbeMemTypeName(Mem *pMem){ + static const char *azTypes[] = { + /* SQLITE_INTEGER */ "INT", + /* SQLITE_FLOAT */ "REAL", + /* SQLITE_TEXT */ "TEXT", + /* SQLITE_BLOB */ "BLOB", + /* SQLITE_NULL */ "NULL" + }; + return azTypes[sqlite3_value_type(pMem)-1]; +} /* ** Execute as much of a VDBE program as we can. -** This is the core of sqlite3_step(). +** This is the core of sqlite3_step(). */ SQLITE_PRIVATE int sqlite3VdbeExec( Vdbe *p /* The VDBE */ ){ Op *aOp = p->aOp; /* Copy of p->aOp */ Op *pOp = aOp; /* Current operation */ -#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) - Op *pOrigOp; /* Value of pOp at the top of the loop */ -#endif #ifdef SQLITE_DEBUG + Op *pOrigOp; /* Value of pOp at the top of the loop */ int nExtraDelete = 0; /* Verifies FORDELETE and AUXDELETE flags */ + u8 iCompareIsInit = 0; /* iCompare is initialized */ #endif int rc = SQLITE_OK; /* Value to return */ sqlite3 *db = p->db; /* The database */ u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */ u8 encoding = ENC(db); /* The database encoding */ int iCompare = 0; /* Result of last comparison */ - unsigned nVmStep = 0; /* Number of virtual machine steps */ + u64 nVmStep = 0; /* Number of virtual machine steps */ #ifndef SQLITE_OMIT_PROGRESS_CALLBACK - unsigned nProgressLimit; /* Invoke xProgress() when nVmStep reaches this */ + u64 nProgressLimit; /* Invoke xProgress() when nVmStep reaches this */ #endif Mem *aMem = p->aMem; /* Copy of p->aMem */ Mem *pIn1 = 0; /* 1st input operand */ Mem *pIn2 = 0; /* 2nd input operand */ Mem *pIn3 = 0; /* 3rd input operand */ Mem *pOut = 0; /* Output operand */ -#ifdef VDBE_PROFILE - u64 start; /* CPU clock count at start of opcode */ + u32 colCacheCtr = 0; /* Column cache counter */ +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || defined(VDBE_PROFILE) + u64 *pnCycle = 0; + int bStmtScanStatus = IS_STMT_SCANSTATUS(db)!=0; #endif /*** INSERT STACK UNION HERE ***/ - assert( p->magic==VDBE_MAGIC_RUN ); /* sqlite3_step() verifies this */ - sqlite3VdbeEnter(p); - if( p->rc==SQLITE_NOMEM ){ - /* This happens if a malloc() inside a call to sqlite3_column_text() or - ** sqlite3_column_text16() failed. */ - goto no_mem; + assert( p->eVdbeState==VDBE_RUN_STATE ); /* sqlite3_step() verifies this */ + if( DbMaskNonZero(p->lockMask) ){ + sqlite3VdbeEnter(p); } - assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY ); - assert( p->bIsReader || p->readOnly!=0 ); - p->iCurrentTime = 0; - assert( p->explain==0 ); - p->pResultSet = 0; - db->busyHandler.nBusy = 0; - if( db->u1.isInterrupted ) goto abort_due_to_interrupt; - sqlite3VdbeIOTraceSql(p); #ifndef SQLITE_OMIT_PROGRESS_CALLBACK if( db->xProgress ){ u32 iPrior = p->aCounter[SQLITE_STMTSTATUS_VM_STEP]; assert( 0 < db->nProgressOps ); nProgressLimit = db->nProgressOps - (iPrior % db->nProgressOps); }else{ - nProgressLimit = 0xffffffff; + nProgressLimit = LARGEST_UINT64; } #endif + if( p->rc==SQLITE_NOMEM ){ + /* This happens if a malloc() inside a call to sqlite3_column_text() or + ** sqlite3_column_text16() failed. */ + goto no_mem; + } + assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY ); + testcase( p->rc!=SQLITE_OK ); + p->rc = SQLITE_OK; + assert( p->bIsReader || p->readOnly!=0 ); + p->iCurrentTime = 0; + assert( p->explain==0 ); + db->busyHandler.nBusy = 0; + if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt; + sqlite3VdbeIOTraceSql(p); #ifdef SQLITE_DEBUG sqlite3BeginBenignMalloc(); if( p->pc==0 @@ -82568,12 +92654,18 @@ SQLITE_PRIVATE int sqlite3VdbeExec( assert( rc==SQLITE_OK ); assert( pOp>=aOp && pOp<&aOp[p->nOp]); -#ifdef VDBE_PROFILE - start = sqlite3NProfileCnt ? sqlite3NProfileCnt : sqlite3Hwtime(); -#endif nVmStep++; -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - if( p->anExec ) p->anExec[(int)(pOp-aOp)]++; + +#if defined(VDBE_PROFILE) + pOp->nExec++; + pnCycle = &pOp->nCycle; + if( sqlite3NProfileCnt==0 ) *pnCycle -= sqlite3Hwtime(); +#elif defined(SQLITE_ENABLE_STMT_SCANSTATUS) + if( bStmtScanStatus ){ + pOp->nExec++; + pnCycle = &pOp->nCycle; + *pnCycle -= sqlite3Hwtime(); + } #endif /* Only allow tracing if SQLITE_DEBUG is defined. @@ -82581,9 +92673,10 @@ SQLITE_PRIVATE int sqlite3VdbeExec( #ifdef SQLITE_DEBUG if( db->flags & SQLITE_VdbeTrace ){ sqlite3VdbePrintOp(stdout, (int)(pOp - aOp), pOp); + test_trace_breakpoint((int)(pOp - aOp),pOp,p); } #endif - + /* Check to see if we need to simulate an interrupt. This only happens ** if we have a special test build. @@ -82634,10 +92727,10 @@ SQLITE_PRIVATE int sqlite3VdbeExec( } } #endif -#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) +#ifdef SQLITE_DEBUG pOrigOp = pOp; #endif - + switch( pOp->opcode ){ /***************************************************************************** @@ -82678,7 +92771,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec( /* Opcode: Goto * P2 * * * ** ** An unconditional jump to address P2. -** The next instruction executed will be +** The next instruction executed will be ** the one at index P2 from the beginning of ** the program. ** @@ -82688,13 +92781,27 @@ SQLITE_PRIVATE int sqlite3VdbeExec( ** to the current line should be indented for EXPLAIN output. */ case OP_Goto: { /* jump */ + +#ifdef SQLITE_DEBUG + /* In debugging mode, when the p5 flags is set on an OP_Goto, that + ** means we should really jump back to the preceding OP_ReleaseReg + ** instruction. */ + if( pOp->p5 ){ + assert( pOp->p2 < (int)(pOp - aOp) ); + assert( pOp->p2 > 1 ); + pOp = &aOp[pOp->p2 - 2]; + assert( pOp[1].opcode==OP_ReleaseReg ); + goto check_for_interrupt; + } +#endif + jump_to_p2_and_check_for_interrupt: pOp = &aOp[pOp->p2 - 1]; /* Opcodes that are used as the bottom of a loop (OP_Next, OP_Prev, ** OP_VNext, or OP_SorterNext) all jump here upon ** completion. Check to see if sqlite3_interrupt() has been called - ** or if the progress callback needs to be invoked. + ** or if the progress callback needs to be invoked. ** ** This code uses unstructured "goto" statements and does not look clean. ** But that is not due to sloppy coding habits. The code is written this @@ -82702,7 +92809,7 @@ jump_to_p2_and_check_for_interrupt: ** checks on every opcode. This helps sqlite3_step() to run about 1.5% ** faster according to "valgrind --tool=cachegrind" */ check_for_interrupt: - if( db->u1.isInterrupted ) goto abort_due_to_interrupt; + if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt; #ifndef SQLITE_OMIT_PROGRESS_CALLBACK /* Call the progress callback if it is configured and the required number ** of VDBE ops have been executed (either since this invocation of @@ -82710,16 +92817,17 @@ check_for_interrupt: ** If the progress callback returns non-zero, exit the virtual machine with ** a return code SQLITE_ABORT. */ - if( nVmStep>=nProgressLimit && db->xProgress!=0 ){ + while( nVmStep>=nProgressLimit && db->xProgress!=0 ){ assert( db->nProgressOps!=0 ); - nProgressLimit = nVmStep + db->nProgressOps - (nVmStep%db->nProgressOps); + nProgressLimit += db->nProgressOps; if( db->xProgress(db->pProgressArg) ){ + nProgressLimit = LARGEST_UINT64; rc = SQLITE_INTERRUPT; goto abort_due_to_error; } } #endif - + break; } @@ -82736,24 +92844,39 @@ case OP_Gosub: { /* jump */ pIn1->flags = MEM_Int; pIn1->u.i = (int)(pOp-aOp); REGISTER_TRACE(pOp->p1, pIn1); - - /* Most jump operations do a goto to this spot in order to update - ** the pOp pointer. */ -jump_to_p2: - pOp = &aOp[pOp->p2 - 1]; - break; + goto jump_to_p2_and_check_for_interrupt; } -/* Opcode: Return P1 * * * * +/* Opcode: Return P1 P2 P3 * * ** -** Jump to the next instruction after the address in register P1. After -** the jump, register P1 becomes undefined. +** Jump to the address stored in register P1. If P1 is a return address +** register, then this accomplishes a return from a subroutine. +** +** If P3 is 1, then the jump is only taken if register P1 holds an integer +** values, otherwise execution falls through to the next opcode, and the +** OP_Return becomes a no-op. If P3 is 0, then register P1 must hold an +** integer or else an assert() is raised. P3 should be set to 1 when +** this opcode is used in combination with OP_BeginSubrtn, and set to 0 +** otherwise. +** +** The value in register P1 is unchanged by this opcode. +** +** P2 is not used by the byte-code engine. However, if P2 is positive +** and also less than the current address, then the "EXPLAIN" output +** formatter in the CLI will indent all opcodes from the P2 opcode up +** to be not including the current Return. P2 should be the first opcode +** in the subroutine from which this opcode is returning. Thus the P2 +** value is a byte-code indentation hint. See tag-20220407a in +** wherecode.c and shell.c. */ case OP_Return: { /* in1 */ pIn1 = &aMem[pOp->p1]; - assert( pIn1->flags==MEM_Int ); - pOp = &aOp[pIn1->u.i]; - pIn1->flags = MEM_Undefined; + if( pIn1->flags & MEM_Int ){ + if( pOp->p3 ){ VdbeBranchTaken(1, 2); } + pOp = &aOp[pIn1->u.i]; + }else if( ALWAYS(pOp->p3) ){ + VdbeBranchTaken(0, 2); + } break; } @@ -82776,7 +92899,14 @@ case OP_InitCoroutine: { /* jump */ assert( !VdbeMemDynamic(pOut) ); pOut->u.i = pOp->p3 - 1; pOut->flags = MEM_Int; - if( pOp->p2 ) goto jump_to_p2; + if( pOp->p2==0 ) break; + + /* Most jump operations do a goto to this spot in order to update + ** the pOp pointer. */ +jump_to_p2: + assert( pOp->p2>0 ); /* There are never any jumps to instruction 0 */ + assert( pOp->p2nOp ); /* Jumps must be in range */ + pOp = &aOp[pOp->p2 - 1]; break; } @@ -82841,6 +92971,7 @@ case OP_HaltIfNull: { /* in3 */ #endif if( (pIn3->flags & MEM_Null)==0 ) break; /* Fall through into OP_Halt */ + /* no break */ deliberate_fall_through } /* Opcode: Halt P1 P2 * P4 P5 @@ -82854,14 +92985,14 @@ case OP_HaltIfNull: { /* in3 */ ** whether or not to rollback the current transaction. Do not rollback ** if P2==OE_Fail. Do the rollback if P2==OE_Rollback. If P2==OE_Abort, ** then back out all changes that have occurred during this execution of the -** VDBE, but do not rollback the transaction. +** VDBE, but do not rollback the transaction. ** ** If P4 is not null then it is an error message string. ** ** P5 is a value between 0 and 4, inclusive, that modifies the P4 string. ** ** 0: (no change) -** 1: NOT NULL contraint failed: P4 +** 1: NOT NULL constraint failed: P4 ** 2: UNIQUE constraint failed: P4 ** 3: CHECK constraint failed: P4 ** 4: FOREIGN KEY constraint failed: P4 @@ -82877,11 +93008,16 @@ case OP_Halt: { VdbeFrame *pFrame; int pcx; - pcx = (int)(pOp - aOp); #ifdef SQLITE_DEBUG if( pOp->p2==OE_Abort ){ sqlite3VdbeAssertAbortable(p); } #endif - if( pOp->p1==SQLITE_OK && p->pFrame ){ + + /* A deliberately coded "OP_Halt SQLITE_INTERNAL * * * *" opcode indicates + ** something is wrong with the code generator. Raise an assertion in order + ** to bring this to the attention of fuzzers and other testing tools. */ + assert( pOp->p1!=SQLITE_INTERNAL ); + + if( p->pFrame && pOp->p1==SQLITE_OK ){ /* Halt the sub-program. Return control to the parent frame. */ pFrame = p->pFrame; p->pFrame = pFrame->pParent; @@ -82889,7 +93025,7 @@ case OP_Halt: { sqlite3VdbeSetChanges(db, p->nChange); pcx = sqlite3VdbeFrameRestore(pFrame); if( pOp->p2==OE_Ignore ){ - /* Instruction pcx is the OP_Program that invoked the sub-program + /* Instruction pcx is the OP_Program that invoked the sub-program ** currently being halted. If the p2 instruction of this OP_Halt ** instruction is set to OE_Ignore, then the sub-program is throwing ** an IGNORE exception. In this case jump to the address specified @@ -82903,7 +93039,6 @@ case OP_Halt: { } p->rc = pOp->p1; p->errorAction = (u8)pOp->p2; - p->pc = pcx; assert( pOp->p5<=4 ); if( p->rc ){ if( pOp->p5 ){ @@ -82920,6 +93055,7 @@ case OP_Halt: { }else{ sqlite3VdbeError(p, "%s", pOp->p4.z); } + pcx = (int)(pOp - aOp); sqlite3_log(pOp->p1, "abort at %d in [%s]: %s", pcx, p->zSql, p->zErrMsg); } rc = sqlite3VdbeHalt(p); @@ -82977,7 +93113,7 @@ case OP_Real: { /* same as TK_FLOAT, out2 */ /* Opcode: String8 * P2 * P4 * ** Synopsis: r[P2]='P4' ** -** P4 points to a nul terminated UTF-8 string. This opcode is transformed +** P4 points to a nul terminated UTF-8 string. This opcode is transformed ** into a String opcode before it is executed for the first time. During ** this transformation, the length of string P4 is computed and stored ** as the P1 parameter. @@ -82985,13 +93121,13 @@ case OP_Real: { /* same as TK_FLOAT, out2 */ case OP_String8: { /* same as TK_STRING, out2 */ assert( pOp->p4.z!=0 ); pOut = out2Prerelease(p, pOp); - pOp->opcode = OP_String; pOp->p1 = sqlite3Strlen30(pOp->p4.z); #ifndef SQLITE_OMIT_UTF16 if( encoding!=SQLITE_UTF8 ){ rc = sqlite3VdbeMemSetStr(pOut, pOp->p4.z, -1, SQLITE_UTF8, SQLITE_STATIC); assert( rc==SQLITE_OK || rc==SQLITE_TOOBIG ); + if( rc ) goto too_big; if( SQLITE_OK!=sqlite3VdbeChangeEncoding(pOut, encoding) ) goto no_mem; assert( pOut->szMalloc>0 && pOut->zMalloc==pOut->z ); assert( VdbeMemDynamic(pOut)==0 ); @@ -83004,15 +93140,16 @@ case OP_String8: { /* same as TK_STRING, out2 */ pOp->p4.z = pOut->z; pOp->p1 = pOut->n; } - testcase( rc==SQLITE_TOOBIG ); #endif if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } + pOp->opcode = OP_String; assert( rc==SQLITE_OK ); /* Fall through to the next case, OP_String */ + /* no break */ deliberate_fall_through } - + /* Opcode: String P1 P2 P3 P4 P5 ** Synopsis: r[P2]='P4' (len=P1) ** @@ -83044,6 +93181,28 @@ case OP_String: { /* out2 */ break; } +/* Opcode: BeginSubrtn * P2 * * * +** Synopsis: r[P2]=NULL +** +** Mark the beginning of a subroutine that can be entered in-line +** or that can be called using OP_Gosub. The subroutine should +** be terminated by an OP_Return instruction that has a P1 operand that +** is the same as the P2 operand to this opcode and that has P3 set to 1. +** If the subroutine is entered in-line, then the OP_Return will simply +** fall through. But if the subroutine is entered using OP_Gosub, then +** the OP_Return will jump back to the first instruction after the OP_Gosub. +** +** This routine works by loading a NULL into the P2 register. When the +** return address register contains a NULL, the OP_Return instruction is +** a no-op that simply falls through to the next instruction (assuming that +** the OP_Return opcode has a P3 value of 1). Thus if the subroutine is +** entered in-line, then the OP_Return will cause in-line execution to +** continue. But if the subroutine is entered via OP_Gosub, then the +** OP_Return will cause a return to the address following the OP_Gosub. +** +** This opcode is identical to OP_Null. It has a different name +** only to make the byte code easier to read and verify. +*/ /* Opcode: Null P1 P2 P3 * * ** Synopsis: r[P2..P3]=NULL ** @@ -83056,6 +93215,7 @@ case OP_String: { /* out2 */ ** NULL values will not compare equal even if SQLITE_NULLEQ is set on ** OP_Ne or OP_Eq. */ +case OP_BeginSubrtn: case OP_Null: { /* out2 */ int cnt; u16 nullFlag; @@ -83064,6 +93224,9 @@ case OP_Null: { /* out2 */ assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); pOut->flags = nullFlag = pOp->p1 ? (MEM_Null|MEM_Cleared) : MEM_Null; pOut->n = 0; +#ifdef SQLITE_DEBUG + pOut->uTemp = 0; +#endif while( cnt>0 ){ pOut++; memAboutToChange(p, pOut); @@ -83094,12 +93257,18 @@ case OP_SoftNull: { ** Synopsis: r[P2]=P4 (len=P1) ** ** P4 points to a blob of data P1 bytes long. Store this -** blob in register P2. +** blob in register P2. If P4 is a NULL pointer, then construct +** a zero-filled blob that is P1 bytes long in P2. */ case OP_Blob: { /* out2 */ assert( pOp->p1 <= SQLITE_MAX_LENGTH ); pOut = out2Prerelease(p, pOp); - sqlite3VdbeMemSetStr(pOut, pOp->p4.z, pOp->p1, 0, 0); + if( pOp->p4.z==0 ){ + sqlite3VdbeMemSetZeroBlob(pOut, pOp->p1); + if( sqlite3VdbeMemExpandBlob(pOut) ) goto no_mem; + }else{ + sqlite3VdbeMemSetStr(pOut, pOp->p4.z, pOp->p1, 0, 0); + } pOut->enc = encoding; UPDATE_MAX_BLOBSIZE(pOut); break; @@ -83123,7 +93292,10 @@ case OP_Variable: { /* out2 */ goto too_big; } pOut = &aMem[pOp->p2]; - sqlite3VdbeMemShallowCopy(pOut, pVar, MEM_Static); + if( VdbeMemDynamic(pOut) ) sqlite3VdbeMemSetNull(pOut); + memcpy(pOut, pVar, MEMCELLSIZE); + pOut->flags &= ~(MEM_Dyn|MEM_Ephem); + pOut->flags |= MEM_Static|MEM_FromBind; UPDATE_MAX_BLOBSIZE(pOut); break; } @@ -83157,8 +93329,13 @@ case OP_Move: { memAboutToChange(p, pOut); sqlite3VdbeMemMove(pOut, pIn1); #ifdef SQLITE_DEBUG - if( pOut->pScopyFrom>=&aMem[p1] && pOut->pScopyFrompScopyFrom += pOp->p2 - p1; + pIn1->pScopyFrom = 0; + { int i; + for(i=1; inMem; i++){ + if( aMem[i].pScopyFrom==pIn1 ){ + aMem[i].pScopyFrom = pOut; + } + } } #endif Deephemeralize(pOut); @@ -83169,11 +93346,16 @@ case OP_Move: { break; } -/* Opcode: Copy P1 P2 P3 * * +/* Opcode: Copy P1 P2 P3 * P5 ** Synopsis: r[P2@P3+1]=r[P1@P3+1] ** ** Make a copy of registers P1..P1+P3 into registers P2..P2+P3. ** +** If the 0x0002 bit of P5 is set then also clear the MEM_Subtype flag in the +** destination. The 0x0001 bit of P5 indicates that this Copy opcode cannot +** be merged. The 0x0001 bit is used by the query planner and does not +** come into play during query execution. +** ** This instruction makes a deep copy of the value. A duplicate ** is made of any string or blob constant. See also OP_SCopy. */ @@ -83185,8 +93367,12 @@ case OP_Copy: { pOut = &aMem[pOp->p2]; assert( pOut!=pIn1 ); while( 1 ){ + memAboutToChange(p, pOut); sqlite3VdbeMemShallowCopy(pOut, pIn1, MEM_Ephem); Deephemeralize(pOut); + if( (pOut->flags & MEM_Subtype)!=0 && (pOp->p5 & 0x0002)!=0 ){ + pOut->flags &= ~MEM_Subtype; + } #ifdef SQLITE_DEBUG pOut->pScopyFrom = 0; #endif @@ -83217,7 +93403,8 @@ case OP_SCopy: { /* out2 */ assert( pOut!=pIn1 ); sqlite3VdbeMemShallowCopy(pOut, pIn1, MEM_Ephem); #ifdef SQLITE_DEBUG - if( pOut->pScopyFrom==0 ) pOut->pScopyFrom = pIn1; + pOut->pScopyFrom = pIn1; + pOut->mScopyFlags = pIn1->flags; #endif break; } @@ -83238,6 +93425,24 @@ case OP_IntCopy: { /* out2 */ break; } +/* Opcode: FkCheck * * * * * +** +** Halt with an SQLITE_CONSTRAINT error if there are any unresolved +** foreign key constraint violations. If there are no foreign key +** constraint violations, this is a no-op. +** +** FK constraint violations are also checked when the prepared statement +** exits. This opcode is used to raise foreign key constraint errors prior +** to returning results such as a row change count or the result of a +** RETURNING clause. +*/ +case OP_FkCheck: { + if( (rc = sqlite3VdbeCheckFk(p,0))!=SQLITE_OK ){ + goto abort_due_to_error; + } + break; +} + /* Opcode: ResultRow P1 P2 * * * ** Synopsis: output=r[P1@P2] ** @@ -83248,76 +93453,32 @@ case OP_IntCopy: { /* out2 */ ** the result row. */ case OP_ResultRow: { - Mem *pMem; - int i; assert( p->nResColumn==pOp->p2 ); - assert( pOp->p1>0 ); + assert( pOp->p1>0 || CORRUPT_DB ); assert( pOp->p1+pOp->p2<=(p->nMem+1 - p->nCursor)+1 ); -#ifndef SQLITE_OMIT_PROGRESS_CALLBACK - /* Run the progress counter just before returning. - */ - if( db->xProgress!=0 - && nVmStep>=nProgressLimit - && db->xProgress(db->pProgressArg)!=0 - ){ - rc = SQLITE_INTERRUPT; - goto abort_due_to_error; + p->cacheCtr = (p->cacheCtr + 2)|1; + p->pResultRow = &aMem[pOp->p1]; +#ifdef SQLITE_DEBUG + { + Mem *pMem = p->pResultRow; + int i; + for(i=0; ip2; i++){ + assert( memIsValid(&pMem[i]) ); + REGISTER_TRACE(pOp->p1+i, &pMem[i]); + /* The registers in the result will not be used again when the + ** prepared statement restarts. This is because sqlite3_column() + ** APIs might have caused type conversions of made other changes to + ** the register values. Therefore, we can go ahead and break any + ** OP_SCopy dependencies. */ + pMem[i].pScopyFrom = 0; + } } #endif - - /* If this statement has violated immediate foreign key constraints, do - ** not return the number of rows modified. And do not RELEASE the statement - ** transaction. It needs to be rolled back. */ - if( SQLITE_OK!=(rc = sqlite3VdbeCheckFk(p, 0)) ){ - assert( db->flags&SQLITE_CountRows ); - assert( p->usesStmtJournal ); - goto abort_due_to_error; - } - - /* If the SQLITE_CountRows flag is set in sqlite3.flags mask, then - ** DML statements invoke this opcode to return the number of rows - ** modified to the user. This is the only way that a VM that - ** opens a statement transaction may invoke this opcode. - ** - ** In case this is such a statement, close any statement transaction - ** opened by this VM before returning control to the user. This is to - ** ensure that statement-transactions are always nested, not overlapping. - ** If the open statement-transaction is not closed here, then the user - ** may step another VM that opens its own statement transaction. This - ** may lead to overlapping statement transactions. - ** - ** The statement transaction is never a top-level transaction. Hence - ** the RELEASE call below can never fail. - */ - assert( p->iStatement==0 || db->flags&SQLITE_CountRows ); - rc = sqlite3VdbeCloseStatement(p, SAVEPOINT_RELEASE); - assert( rc==SQLITE_OK ); - - /* Invalidate all ephemeral cursor row caches */ - p->cacheCtr = (p->cacheCtr + 2)|1; - - /* Make sure the results of the current row are \000 terminated - ** and have an assigned type. The results are de-ephemeralized as - ** a side effect. - */ - pMem = p->pResultSet = &aMem[pOp->p1]; - for(i=0; ip2; i++){ - assert( memIsValid(&pMem[i]) ); - Deephemeralize(&pMem[i]); - assert( (pMem[i].flags & MEM_Ephem)==0 - || (pMem[i].flags & (MEM_Str|MEM_Blob))==0 ); - sqlite3VdbeMemNulTerminate(&pMem[i]); - REGISTER_TRACE(pOp->p1+i, &pMem[i]); - } if( db->mallocFailed ) goto no_mem; - if( db->mTrace & SQLITE_TRACE_ROW ){ - db->xTrace(SQLITE_TRACE_ROW, db->pTraceArg, p, 0); + db->trace.xV2(SQLITE_TRACE_ROW, db->pTraceArg, p, 0); } - - /* Return SQLITE_ROW - */ p->pc = (int)(pOp - aOp) + 1; rc = SQLITE_ROW; goto vdbe_return; @@ -83337,19 +93498,37 @@ case OP_ResultRow: { ** to avoid a memcpy(). */ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ - i64 nByte; + i64 nByte; /* Total size of the output string or blob */ + u16 flags1; /* Initial flags for P1 */ + u16 flags2; /* Initial flags for P2 */ pIn1 = &aMem[pOp->p1]; pIn2 = &aMem[pOp->p2]; pOut = &aMem[pOp->p3]; + testcase( pOut==pIn2 ); assert( pIn1!=pOut ); - if( (pIn1->flags | pIn2->flags) & MEM_Null ){ + flags1 = pIn1->flags; + testcase( flags1 & MEM_Null ); + testcase( pIn2->flags & MEM_Null ); + if( (flags1 | pIn2->flags) & MEM_Null ){ sqlite3VdbeMemSetNull(pOut); break; } - if( ExpandBlob(pIn1) || ExpandBlob(pIn2) ) goto no_mem; - Stringify(pIn1, encoding); - Stringify(pIn2, encoding); + if( (flags1 & (MEM_Str|MEM_Blob))==0 ){ + if( sqlite3VdbeMemStringify(pIn1,encoding,0) ) goto no_mem; + flags1 = pIn1->flags & ~MEM_Str; + }else if( (flags1 & MEM_Zero)!=0 ){ + if( sqlite3VdbeMemExpandBlob(pIn1) ) goto no_mem; + flags1 = pIn1->flags & ~MEM_Str; + } + flags2 = pIn2->flags; + if( (flags2 & (MEM_Str|MEM_Blob))==0 ){ + if( sqlite3VdbeMemStringify(pIn2,encoding,0) ) goto no_mem; + flags2 = pIn2->flags & ~MEM_Str; + }else if( (flags2 & MEM_Zero)!=0 ){ + if( sqlite3VdbeMemExpandBlob(pIn2) ) goto no_mem; + flags2 = pIn2->flags & ~MEM_Str; + } nByte = pIn1->n + pIn2->n; if( nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; @@ -83360,8 +93539,13 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ MemSetTypeFlag(pOut, MEM_Str); if( pOut!=pIn2 ){ memcpy(pOut->z, pIn2->z, pIn2->n); + assert( (pIn2->flags & MEM_Dyn) == (flags2 & MEM_Dyn) ); + pIn2->flags = flags2; } memcpy(&pOut->z[pIn2->n], pIn1->z, pIn1->n); + assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) ); + pIn1->flags = flags1; + if( encoding>SQLITE_UTF8 ) nByte &= ~1; pOut->z[nByte]=0; pOut->z[nByte+1] = 0; pOut->flags |= MEM_Term; @@ -83397,15 +93581,15 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ ** Synopsis: r[P3]=r[P2]/r[P1] ** ** Divide the value in register P1 by the value in register P2 -** and store the result in register P3 (P3=P2/P1). If the value in -** register P1 is zero, then the result is NULL. If either input is +** and store the result in register P3 (P3=P2/P1). If the value in +** register P1 is zero, then the result is NULL. If either input is ** NULL, the result is NULL. */ /* Opcode: Remainder P1 P2 P3 * * ** Synopsis: r[P3]=r[P2]%r[P1] ** -** Compute the remainder after integer register P2 is divided by -** register P1 and store the result in register P3. +** Compute the remainder after integer register P2 is divided by +** register P1 and store the result in register P3. ** If the value in register P1 is zero the result is NULL. ** If either operand is NULL, the result is NULL. */ @@ -83414,8 +93598,6 @@ case OP_Subtract: /* same as TK_MINUS, in1, in2, out3 */ case OP_Multiply: /* same as TK_STAR, in1, in2, out3 */ case OP_Divide: /* same as TK_SLASH, in1, in2, out3 */ case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */ - char bIntint; /* Started out as two integer operands */ - u16 flags; /* Combined MEM_* flags from both inputs */ u16 type1; /* Numeric type of left operand */ u16 type2; /* Numeric type of right operand */ i64 iA; /* Integer value of left operand */ @@ -83424,15 +93606,14 @@ case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */ double rB; /* Real value of right operand */ pIn1 = &aMem[pOp->p1]; - type1 = numericType(pIn1); + type1 = pIn1->flags; pIn2 = &aMem[pOp->p2]; - type2 = numericType(pIn2); + type2 = pIn2->flags; pOut = &aMem[pOp->p3]; - flags = pIn1->flags | pIn2->flags; if( (type1 & type2 & MEM_Int)!=0 ){ +int_math: iA = pIn1->u.i; iB = pIn2->u.i; - bIntint = 1; switch( pOp->opcode ){ case OP_Add: if( sqlite3AddInt64(&iB,iA) ) goto fp_math; break; case OP_Subtract: if( sqlite3SubInt64(&iB,iA) ) goto fp_math; break; @@ -83452,10 +93633,12 @@ case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */ } pOut->u.i = iB; MemSetTypeFlag(pOut, MEM_Int); - }else if( (flags & MEM_Null)!=0 ){ + }else if( ((type1 | type2) & MEM_Null)!=0 ){ goto arithmetic_result_is_null; }else{ - bIntint = 0; + type1 = numericType(pIn1); + type2 = numericType(pIn2); + if( (type1 & type2 & MEM_Int)!=0 ) goto int_math; fp_math: rA = sqlite3VdbeRealValue(pIn1); rB = sqlite3VdbeRealValue(pIn2); @@ -83470,8 +93653,8 @@ fp_math: break; } default: { - iA = (i64)rA; - iB = (i64)rB; + iA = sqlite3VdbeIntValue(pIn1); + iB = sqlite3VdbeIntValue(pIn2); if( iA==0 ) goto arithmetic_result_is_null; if( iA==-1 ) iA = 1; rB = (double)(iB % iA); @@ -83487,9 +93670,6 @@ fp_math: } pOut->u.r = rB; MemSetTypeFlag(pOut, MEM_Real); - if( ((type1|type2)&MEM_Real)==0 && !bIntint ){ - sqlite3VdbeIntegerAffinity(pOut); - } #endif } break; @@ -83606,7 +93786,7 @@ case OP_ShiftRight: { /* same as TK_RSHIFT, in1, in2, out3 */ /* Opcode: AddImm P1 P2 * * * ** Synopsis: r[P1]=r[P1]+P2 -** +** ** Add the constant P2 to the value in register P1. ** The result is always an integer. ** @@ -83621,7 +93801,7 @@ case OP_AddImm: { /* in1 */ } /* Opcode: MustBeInt P1 P2 * * * -** +** ** Force the value in register P1 to be an integer. If the value ** in P1 is not an integer and cannot be converted into an integer ** without data loss, then jump immediately to P2, or if P2==0 @@ -83631,8 +93811,8 @@ case OP_MustBeInt: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; if( (pIn1->flags & MEM_Int)==0 ){ applyAffinity(pIn1, SQLITE_AFF_NUMERIC, encoding); - VdbeBranchTaken((pIn1->flags&MEM_Int)==0, 2); if( (pIn1->flags & MEM_Int)==0 ){ + VdbeBranchTaken(1, 2); if( pOp->p2==0 ){ rc = SQLITE_MISMATCH; goto abort_due_to_error; @@ -83641,6 +93821,7 @@ case OP_MustBeInt: { /* jump, in1 */ } } } + VdbeBranchTaken(0, 2); MemSetTypeFlag(pIn1, MEM_Int); break; } @@ -83657,8 +93838,11 @@ case OP_MustBeInt: { /* jump, in1 */ */ case OP_RealAffinity: { /* in1 */ pIn1 = &aMem[pOp->p1]; - if( pIn1->flags & MEM_Int ){ + if( pIn1->flags & (MEM_Int|MEM_IntReal) ){ + testcase( pIn1->flags & MEM_Int ); + testcase( pIn1->flags & MEM_IntReal ); sqlite3VdbeMemRealify(pIn1); + REGISTER_TRACE(pOp->p1, pIn1); } break; } @@ -83669,7 +93853,7 @@ case OP_RealAffinity: { /* in1 */ ** Synopsis: affinity(r[P1]) ** ** Force the value in register P1 to be the type defined by P2. -** +** **
            **
          • P2=='A' → BLOB **
          • P2=='B' → TEXT @@ -83690,9 +93874,11 @@ case OP_Cast: { /* in1 */ pIn1 = &aMem[pOp->p1]; memAboutToChange(p, pIn1); rc = ExpandBlob(pIn1); - sqlite3VdbeMemCast(pIn1, pOp->p2, encoding); - UPDATE_MAX_BLOBSIZE(pIn1); if( rc ) goto abort_due_to_error; + rc = sqlite3VdbeMemCast(pIn1, pOp->p2, encoding); + if( rc ) goto abort_due_to_error; + UPDATE_MAX_BLOBSIZE(pIn1); + REGISTER_TRACE(pOp->p1, pIn1); break; } #endif /* SQLITE_OMIT_CAST */ @@ -83701,18 +93887,17 @@ case OP_Cast: { /* in1 */ ** Synopsis: IF r[P3]==r[P1] ** ** Compare the values in register P1 and P3. If reg(P3)==reg(P1) then -** jump to address P2. Or if the SQLITE_STOREP2 flag is set in P5, then -** store the result of comparison in register P2. +** jump to address P2. ** ** The SQLITE_AFF_MASK portion of P5 must be an affinity character - -** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made +** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made ** to coerce both inputs according to this affinity before the ** comparison is made. If the SQLITE_AFF_MASK is 0x00, then numeric ** affinity is used. Note that the affinity conversions are stored ** back into the input registers P1 and P3. So this opcode can cause ** persistent changes to registers P1 and P3. ** -** Once any conversions have taken place, and neither value is NULL, +** Once any conversions have taken place, and neither value is NULL, ** the values are compared. If both values are blobs then memcmp() is ** used to determine the results of the comparison. If both values ** are text, then the appropriate collating function specified in @@ -83728,9 +93913,8 @@ case OP_Cast: { /* in1 */ ** If neither operand is NULL the result is the same as it would be if ** the SQLITE_NULLEQ flag were omitted from P5. ** -** If both SQLITE_STOREP2 and SQLITE_KEEPNULL flags are set then the -** content of r[P2] is only changed if the new value is NULL or 0 (false). -** In other words, a prior r[P2] value will not be overwritten by 1 (true). +** This opcode saves the result of comparison for use by the new +** OP_Jump opcode. */ /* Opcode: Ne P1 P2 P3 P4 P5 ** Synopsis: IF r[P3]!=r[P1] @@ -83738,31 +93922,26 @@ case OP_Cast: { /* in1 */ ** This works just like the Eq opcode except that the jump is taken if ** the operands in registers P1 and P3 are not equal. See the Eq opcode for ** additional information. -** -** If both SQLITE_STOREP2 and SQLITE_KEEPNULL flags are set then the -** content of r[P2] is only changed if the new value is NULL or 1 (true). -** In other words, a prior r[P2] value will not be overwritten by 0 (false). */ /* Opcode: Lt P1 P2 P3 P4 P5 ** Synopsis: IF r[P3]p3]; flags1 = pIn1->flags; flags3 = pIn3->flags; + if( (flags1 & flags3 & MEM_Int)!=0 ){ + /* Common case of comparison of two integers */ + if( pIn3->u.i > pIn1->u.i ){ + if( sqlite3aGTb[pOp->opcode] ){ + VdbeBranchTaken(1, (pOp->p5 & SQLITE_NULLEQ)?2:3); + goto jump_to_p2; + } + iCompare = +1; + VVA_ONLY( iCompareIsInit = 1; ) + }else if( pIn3->u.i < pIn1->u.i ){ + if( sqlite3aLTb[pOp->opcode] ){ + VdbeBranchTaken(1, (pOp->p5 & SQLITE_NULLEQ)?2:3); + goto jump_to_p2; + } + iCompare = -1; + VVA_ONLY( iCompareIsInit = 1; ) + }else{ + if( sqlite3aEQb[pOp->opcode] ){ + VdbeBranchTaken(1, (pOp->p5 & SQLITE_NULLEQ)?2:3); + goto jump_to_p2; + } + iCompare = 0; + VVA_ONLY( iCompareIsInit = 1; ) + } + VdbeBranchTaken(0, (pOp->p5 & SQLITE_NULLEQ)?2:3); + break; + } if( (flags1 | flags3)&MEM_Null ){ /* One or both operands are NULL */ if( pOp->p5 & SQLITE_NULLEQ ){ @@ -83815,69 +94024,58 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */ ** OP_Eq or OP_Ne) then take the jump or not depending on whether ** or not both operands are null. */ - assert( pOp->opcode==OP_Eq || pOp->opcode==OP_Ne ); assert( (flags1 & MEM_Cleared)==0 ); - assert( (pOp->p5 & SQLITE_JUMPIFNULL)==0 ); + assert( (pOp->p5 & SQLITE_JUMPIFNULL)==0 || CORRUPT_DB ); + testcase( (pOp->p5 & SQLITE_JUMPIFNULL)!=0 ); if( (flags1&flags3&MEM_Null)!=0 && (flags3&MEM_Cleared)==0 ){ res = 0; /* Operands are equal */ }else{ - res = 1; /* Operands are not equal */ + res = ((flags3 & MEM_Null) ? -1 : +1); /* Operands are not equal */ } }else{ /* SQLITE_NULLEQ is clear and at least one operand is NULL, ** then the result is always NULL. ** The jump is taken if the SQLITE_JUMPIFNULL bit is set. */ - if( pOp->p5 & SQLITE_STOREP2 ){ - pOut = &aMem[pOp->p2]; - iCompare = 1; /* Operands are not equal */ - memAboutToChange(p, pOut); - MemSetTypeFlag(pOut, MEM_Null); - REGISTER_TRACE(pOp->p2, pOut); - }else{ - VdbeBranchTaken(2,3); - if( pOp->p5 & SQLITE_JUMPIFNULL ){ - goto jump_to_p2; - } + VdbeBranchTaken(2,3); + if( pOp->p5 & SQLITE_JUMPIFNULL ){ + goto jump_to_p2; } + iCompare = 1; /* Operands are not equal */ + VVA_ONLY( iCompareIsInit = 1; ) break; } }else{ - /* Neither operand is NULL. Do a comparison. */ + /* Neither operand is NULL and we couldn't do the special high-speed + ** integer comparison case. So do a general-case comparison. */ affinity = pOp->p5 & SQLITE_AFF_MASK; if( affinity>=SQLITE_AFF_NUMERIC ){ if( (flags1 | flags3)&MEM_Str ){ - if( (flags1 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + if( (flags1 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){ applyNumericAffinity(pIn1,0); - testcase( flags3!=pIn3->flags ); /* Possible if pIn1==pIn3 */ + assert( flags3==pIn3->flags || CORRUPT_DB ); flags3 = pIn3->flags; } - if( (flags3 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + if( (flags3 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){ applyNumericAffinity(pIn3,0); } } - /* Handle the common case of integer comparison here, as an - ** optimization, to avoid a call to sqlite3MemCompare() */ - if( (pIn1->flags & pIn3->flags & MEM_Int)!=0 ){ - if( pIn3->u.i > pIn1->u.i ){ res = +1; goto compare_op; } - if( pIn3->u.i < pIn1->u.i ){ res = -1; goto compare_op; } - res = 0; - goto compare_op; - } - }else if( affinity==SQLITE_AFF_TEXT ){ - if( (flags1 & MEM_Str)==0 && (flags1 & (MEM_Int|MEM_Real))!=0 ){ + }else if( affinity==SQLITE_AFF_TEXT && ((flags1 | flags3) & MEM_Str)!=0 ){ + if( (flags1 & MEM_Str)==0 && (flags1&(MEM_Int|MEM_Real|MEM_IntReal))!=0 ){ testcase( pIn1->flags & MEM_Int ); testcase( pIn1->flags & MEM_Real ); + testcase( pIn1->flags & MEM_IntReal ); sqlite3VdbeMemStringify(pIn1, encoding, 1); testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) ); flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask); - assert( pIn1!=pIn3 ); + if( NEVER(pIn1==pIn3) ) flags3 = flags1 | MEM_Str; } - if( (flags3 & MEM_Str)==0 && (flags3 & (MEM_Int|MEM_Real))!=0 ){ + if( (flags3 & MEM_Str)==0 && (flags3&(MEM_Int|MEM_Real|MEM_IntReal))!=0 ){ testcase( pIn3->flags & MEM_Int ); testcase( pIn3->flags & MEM_Real ); + testcase( pIn3->flags & MEM_IntReal ); sqlite3VdbeMemStringify(pIn3, encoding, 1); testcase( (flags3&MEM_Dyn) != (pIn3->flags&MEM_Dyn) ); flags3 = (pIn3->flags & ~MEM_TypeMask) | (flags3 & MEM_TypeMask); @@ -83886,7 +94084,7 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */ assert( pOp->p4type==P4_COLLSEQ || pOp->p4.pColl==0 ); res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl); } -compare_op: + /* At this point, res is negative, zero, or positive if reg[P1] is ** less than, equal to, or greater than reg[P3], respectively. Compute ** the answer to this operator in res2, depending on what the comparison @@ -83895,69 +94093,56 @@ compare_op: ** order: NE, EQ, GT, LE, LT, GE */ assert( OP_Eq==OP_Ne+1 ); assert( OP_Gt==OP_Ne+2 ); assert( OP_Le==OP_Ne+3 ); assert( OP_Lt==OP_Ne+4 ); assert( OP_Ge==OP_Ne+5 ); - if( res<0 ){ /* ne, eq, gt, le, lt, ge */ - static const unsigned char aLTb[] = { 1, 0, 0, 1, 1, 0 }; - res2 = aLTb[pOp->opcode - OP_Ne]; + if( res<0 ){ + res2 = sqlite3aLTb[pOp->opcode]; }else if( res==0 ){ - static const unsigned char aEQb[] = { 0, 1, 0, 1, 0, 1 }; - res2 = aEQb[pOp->opcode - OP_Ne]; + res2 = sqlite3aEQb[pOp->opcode]; }else{ - static const unsigned char aGTb[] = { 1, 0, 1, 0, 0, 1 }; - res2 = aGTb[pOp->opcode - OP_Ne]; + res2 = sqlite3aGTb[pOp->opcode]; } + iCompare = res; + VVA_ONLY( iCompareIsInit = 1; ) /* Undo any changes made by applyAffinity() to the input registers. */ - assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) ); - pIn1->flags = flags1; assert( (pIn3->flags & MEM_Dyn) == (flags3 & MEM_Dyn) ); pIn3->flags = flags3; + assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) ); + pIn1->flags = flags1; - if( pOp->p5 & SQLITE_STOREP2 ){ - pOut = &aMem[pOp->p2]; - iCompare = res; - if( (pOp->p5 & SQLITE_KEEPNULL)!=0 ){ - /* The KEEPNULL flag prevents OP_Eq from overwriting a NULL with 1 - ** and prevents OP_Ne from overwriting NULL with 0. This flag - ** is only used in contexts where either: - ** (1) op==OP_Eq && (r[P2]==NULL || r[P2]==0) - ** (2) op==OP_Ne && (r[P2]==NULL || r[P2]==1) - ** Therefore it is not necessary to check the content of r[P2] for - ** NULL. */ - assert( pOp->opcode==OP_Ne || pOp->opcode==OP_Eq ); - assert( res2==0 || res2==1 ); - testcase( res2==0 && pOp->opcode==OP_Eq ); - testcase( res2==1 && pOp->opcode==OP_Eq ); - testcase( res2==0 && pOp->opcode==OP_Ne ); - testcase( res2==1 && pOp->opcode==OP_Ne ); - if( (pOp->opcode==OP_Eq)==res2 ) break; - } - memAboutToChange(p, pOut); - MemSetTypeFlag(pOut, MEM_Int); - pOut->u.i = res2; - REGISTER_TRACE(pOp->p2, pOut); - }else{ - VdbeBranchTaken(res!=0, (pOp->p5 & SQLITE_NULLEQ)?2:3); - if( res2 ){ - goto jump_to_p2; - } + VdbeBranchTaken(res2!=0, (pOp->p5 & SQLITE_NULLEQ)?2:3); + if( res2 ){ + goto jump_to_p2; } break; } -/* Opcode: ElseNotEq * P2 * * * +/* Opcode: ElseEq * P2 * * * ** -** This opcode must immediately follow an OP_Lt or OP_Gt comparison operator. -** If result of an OP_Eq comparison on the same two operands -** would have be NULL or false (0), then then jump to P2. -** If the result of an OP_Eq comparison on the two previous operands -** would have been true (1), then fall through. +** This opcode must follow an OP_Lt or OP_Gt comparison operator. There +** can be zero or more OP_ReleaseReg opcodes intervening, but no other +** opcodes are allowed to occur between this instruction and the previous +** OP_Lt or OP_Gt. +** +** If the result of an OP_Eq comparison on the same two operands as +** the prior OP_Lt or OP_Gt would have been true, then jump to P2. If +** the result of an OP_Eq comparison on the two previous operands +** would have been false or NULL, then fall through. */ -case OP_ElseNotEq: { /* same as TK_ESCAPE, jump */ - assert( pOp>aOp ); - assert( pOp[-1].opcode==OP_Lt || pOp[-1].opcode==OP_Gt ); - assert( pOp[-1].p5 & SQLITE_STOREP2 ); - VdbeBranchTaken(iCompare!=0, 2); - if( iCompare!=0 ) goto jump_to_p2; +case OP_ElseEq: { /* same as TK_ESCAPE, jump */ + +#ifdef SQLITE_DEBUG + /* Verify the preconditions of this opcode - that it follows an OP_Lt or + ** OP_Gt with zero or more intervening OP_ReleaseReg opcodes */ + int iAddr; + for(iAddr = (int)(pOp - aOp) - 1; ALWAYS(iAddr>=0); iAddr--){ + if( aOp[iAddr].opcode==OP_ReleaseReg ) continue; + assert( aOp[iAddr].opcode==OP_Lt || aOp[iAddr].opcode==OP_Gt ); + break; + } +#endif /* SQLITE_DEBUG */ + assert( iCompareIsInit ); + VdbeBranchTaken(iCompare==0, 2); + if( iCompare==0 ) goto jump_to_p2; break; } @@ -83967,9 +94152,8 @@ case OP_ElseNotEq: { /* same as TK_ESCAPE, jump */ ** Set the permutation used by the OP_Compare operator in the next ** instruction. The permutation is stored in the P4 operand. ** -** The permutation is only valid until the next OP_Compare that has -** the OPFLAG_PERMUTE bit set in P5. Typically the OP_Permutation should -** occur immediately prior to the OP_Compare. +** The permutation is only valid for the next opcode which must be +** an OP_Compare that has the OPFLAG_PERMUTE bit set in P5. ** ** The first integer in the P4 integer array is the length of the array ** and does not become part of the permutation. @@ -84001,6 +94185,8 @@ case OP_Permutation: { ** The comparison is a sort comparison, so NULLs compare equal, ** NULLs are less than numbers, numbers are less than strings, ** and strings are less than blobs. +** +** This opcode must be immediately followed by an OP_Jump opcode. */ case OP_Compare: { int n; @@ -84008,10 +94194,10 @@ case OP_Compare: { int p1; int p2; const KeyInfo *pKeyInfo; - int idx; + u32 idx; CollSeq *pColl; /* Collating sequence to use on this term */ int bRev; /* True for DESCENDING sort order */ - int *aPermute; /* The permutation */ + u32 *aPermute; /* The permutation */ if( (pOp->p5 & OPFLAG_PERMUTE)==0 ){ aPermute = 0; @@ -84031,7 +94217,7 @@ case OP_Compare: { #ifdef SQLITE_DEBUG if( aPermute ){ int k, mx = 0; - for(k=0; kmx ) mx = aPermute[k]; + for(k=0; k(u32)mx ) mx = aPermute[k]; assert( p1>0 && p1+mx<=(p->nMem+1 - p->nCursor)+1 ); assert( p2>0 && p2+mx<=(p->nMem+1 - p->nCursor)+1 ); }else{ @@ -84040,36 +94226,47 @@ case OP_Compare: { } #endif /* SQLITE_DEBUG */ for(i=0; inKeyField ); pColl = pKeyInfo->aColl[i]; - bRev = pKeyInfo->aSortOrder[i]; + bRev = (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_DESC); iCompare = sqlite3MemCompare(&aMem[p1+idx], &aMem[p2+idx], pColl); + VVA_ONLY( iCompareIsInit = 1; ) if( iCompare ){ + if( (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_BIGNULL) + && ((aMem[p1+idx].flags & MEM_Null) || (aMem[p2+idx].flags & MEM_Null)) + ){ + iCompare = -iCompare; + } if( bRev ) iCompare = -iCompare; break; } } + assert( pOp[1].opcode==OP_Jump ); break; } /* Opcode: Jump P1 P2 P3 * * ** ** Jump to the instruction at address P1, P2, or P3 depending on whether -** in the most recent OP_Compare instruction the P1 vector was less than +** in the most recent OP_Compare instruction the P1 vector was less than, ** equal to, or greater than the P2 vector, respectively. +** +** This opcode must immediately follow an OP_Compare opcode. */ case OP_Jump: { /* jump */ + assert( pOp>aOp && pOp[-1].opcode==OP_Compare ); + assert( iCompareIsInit ); if( iCompare<0 ){ - VdbeBranchTaken(0,3); pOp = &aOp[pOp->p1 - 1]; + VdbeBranchTaken(0,4); pOp = &aOp[pOp->p1 - 1]; }else if( iCompare==0 ){ - VdbeBranchTaken(1,3); pOp = &aOp[pOp->p2 - 1]; + VdbeBranchTaken(1,4); pOp = &aOp[pOp->p2 - 1]; }else{ - VdbeBranchTaken(2,3); pOp = &aOp[pOp->p3 - 1]; + VdbeBranchTaken(2,4); pOp = &aOp[pOp->p3 - 1]; } break; } @@ -84125,13 +94322,13 @@ case OP_Or: { /* same as TK_OR, in1, in2, out3 */ ** IS NOT FALSE operators. ** ** Interpret the value in register P1 as a boolean value. Store that -** boolean (a 0 or 1) in register P2. Or if the value in register P1 is +** boolean (a 0 or 1) in register P2. Or if the value in register P1 is ** NULL, then the P3 is stored in register P2. Invert the answer if P4 ** is 1. ** ** The logic is summarized like this: ** -**
              +**
                **
              • If P3==0 and P4==0 then r[P2] := r[P1] IS TRUE **
              • If P3==1 and P4==1 then r[P2] := r[P1] IS FALSE **
              • If P3==0 and P4==1 then r[P2] := r[P1] IS NOT TRUE @@ -84151,7 +94348,7 @@ case OP_IsTrue: { /* in1, out2 */ ** Synopsis: r[P2]= !r[P1] ** ** Interpret the value in register P1 as a boolean value. Store the -** boolean complement in register P2. If the value in register P1 is +** boolean complement in register P2. If the value in register P1 is ** NULL, then a NULL is stored in P2. */ case OP_Not: { /* same as TK_NOT, in1, out2 */ @@ -84166,7 +94363,7 @@ case OP_Not: { /* same as TK_NOT, in1, out2 */ } /* Opcode: BitNot P1 P2 * * * -** Synopsis: r[P1]= ~r[P1] +** Synopsis: r[P2]= ~r[P1] ** ** Interpret the content of register P1 as an integer. Store the ** ones-complement of the P1 value into register P2. If P1 holds @@ -84263,10 +94460,121 @@ case OP_IsNull: { /* same as TK_ISNULL, jump, in1 */ break; } +/* Opcode: IsType P1 P2 P3 P4 P5 +** Synopsis: if typeof(P1.P3) in P5 goto P2 +** +** Jump to P2 if the type of a column in a btree is one of the types specified +** by the P5 bitmask. +** +** P1 is normally a cursor on a btree for which the row decode cache is +** valid through at least column P3. In other words, there should have been +** a prior OP_Column for column P3 or greater. If the cursor is not valid, +** then this opcode might give spurious results. +** The the btree row has fewer than P3 columns, then use P4 as the +** datatype. +** +** If P1 is -1, then P3 is a register number and the datatype is taken +** from the value in that register. +** +** P5 is a bitmask of data types. SQLITE_INTEGER is the least significant +** (0x01) bit. SQLITE_FLOAT is the 0x02 bit. SQLITE_TEXT is 0x04. +** SQLITE_BLOB is 0x08. SQLITE_NULL is 0x10. +** +** WARNING: This opcode does not reliably distinguish between NULL and REAL +** when P1>=0. If the database contains a NaN value, this opcode will think +** that the datatype is REAL when it should be NULL. When P1<0 and the value +** is already stored in register P3, then this opcode does reliably +** distinguish between NULL and REAL. The problem only arises then P1>=0. +** +** Take the jump to address P2 if and only if the datatype of the +** value determined by P1 and P3 corresponds to one of the bits in the +** P5 bitmask. +** +*/ +case OP_IsType: { /* jump */ + VdbeCursor *pC; + u16 typeMask; + u32 serialType; + + assert( pOp->p1>=(-1) && pOp->p1nCursor ); + assert( pOp->p1>=0 || (pOp->p3>=0 && pOp->p3<=(p->nMem+1 - p->nCursor)) ); + if( pOp->p1>=0 ){ + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + assert( pOp->p3>=0 ); + if( pOp->p3nHdrParsed ){ + serialType = pC->aType[pOp->p3]; + if( serialType>=12 ){ + if( serialType&1 ){ + typeMask = 0x04; /* SQLITE_TEXT */ + }else{ + typeMask = 0x08; /* SQLITE_BLOB */ + } + }else{ + static const unsigned char aMask[] = { + 0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x2, + 0x01, 0x01, 0x10, 0x10 + }; + testcase( serialType==0 ); + testcase( serialType==1 ); + testcase( serialType==2 ); + testcase( serialType==3 ); + testcase( serialType==4 ); + testcase( serialType==5 ); + testcase( serialType==6 ); + testcase( serialType==7 ); + testcase( serialType==8 ); + testcase( serialType==9 ); + testcase( serialType==10 ); + testcase( serialType==11 ); + typeMask = aMask[serialType]; + } + }else{ + typeMask = 1 << (pOp->p4.i - 1); + testcase( typeMask==0x01 ); + testcase( typeMask==0x02 ); + testcase( typeMask==0x04 ); + testcase( typeMask==0x08 ); + testcase( typeMask==0x10 ); + } + }else{ + assert( memIsValid(&aMem[pOp->p3]) ); + typeMask = 1 << (sqlite3_value_type((sqlite3_value*)&aMem[pOp->p3])-1); + testcase( typeMask==0x01 ); + testcase( typeMask==0x02 ); + testcase( typeMask==0x04 ); + testcase( typeMask==0x08 ); + testcase( typeMask==0x10 ); + } + VdbeBranchTaken( (typeMask & pOp->p5)!=0, 2); + if( typeMask & pOp->p5 ){ + goto jump_to_p2; + } + break; +} + +/* Opcode: ZeroOrNull P1 P2 P3 * * +** Synopsis: r[P2] = 0 OR NULL +** +** If both registers P1 and P3 are NOT NULL, then store a zero in +** register P2. If either registers P1 or P3 are NULL then put +** a NULL in register P2. +*/ +case OP_ZeroOrNull: { /* in1, in2, out2, in3 */ + if( (aMem[pOp->p1].flags & MEM_Null)!=0 + || (aMem[pOp->p3].flags & MEM_Null)!=0 + ){ + sqlite3VdbeMemSetNull(aMem + pOp->p2); + }else{ + sqlite3VdbeMemSetInt64(aMem + pOp->p2, 0); + } + break; +} + /* Opcode: NotNull P1 P2 * * * ** Synopsis: if r[P1]!=NULL goto P2 ** -** Jump to P2 if the value in register P1 is not NULL. +** Jump to P2 if the value in register P1 is not NULL. */ case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */ pIn1 = &aMem[pOp->p1]; @@ -84284,11 +94592,14 @@ case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */ ** If it is, then set register P3 to NULL and jump immediately to P2. ** If P1 is not on a NULL row, then fall through without making any ** changes. +** +** If P1 is not an open cursor, then this opcode is a no-op. */ case OP_IfNullRow: { /* jump */ + VdbeCursor *pC; assert( pOp->p1>=0 && pOp->p1nCursor ); - assert( p->apCsr[pOp->p1]!=0 ); - if( p->apCsr[pOp->p1]->nullRow ){ + pC = p->apCsr[pOp->p1]; + if( pC && pC->nullRow ){ sqlite3VdbeMemSetNull(aMem + pOp->p3); goto jump_to_p2; } @@ -84316,22 +94627,30 @@ case OP_Offset: { /* out3 */ assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; pOut = &p->aMem[pOp->p3]; - if( NEVER(pC==0) || pC->eCurType!=CURTYPE_BTREE ){ + if( pC==0 || pC->eCurType!=CURTYPE_BTREE ){ sqlite3VdbeMemSetNull(pOut); }else{ - sqlite3VdbeMemSetInt64(pOut, sqlite3BtreeOffset(pC->uc.pCursor)); + if( pC->deferredMoveto ){ + rc = sqlite3VdbeFinishMoveto(pC); + if( rc ) goto abort_due_to_error; + } + if( sqlite3BtreeEof(pC->uc.pCursor) ){ + sqlite3VdbeMemSetNull(pOut); + }else{ + sqlite3VdbeMemSetInt64(pOut, sqlite3BtreeOffset(pC->uc.pCursor)); + } } break; } #endif /* SQLITE_ENABLE_OFFSET_SQL_FUNC */ /* Opcode: Column P1 P2 P3 P4 P5 -** Synopsis: r[P3]=PX +** Synopsis: r[P3]=PX cursor P1 column P2 ** ** Interpret the data that cursor P1 points to as a structure built using ** the MakeRecord instruction. (See the MakeRecord opcode for additional ** information about the format of the data.) Extract the P2-th column -** from this record. If there are less that (P2+1) +** from this record. If there are less than (P2+1) ** values in the record, extract a NULL. ** ** The value extracted is stored in register P3. @@ -84340,20 +94659,17 @@ case OP_Offset: { /* out3 */ ** if the P4 argument is a P4_MEM use the value of the P4 argument as ** the result. ** -** If the OPFLAG_CLEARCACHE bit is set on P5 and P1 is a pseudo-table cursor, -** then the cache of the cursor is reset prior to extracting the column. -** The first OP_Column against a pseudo-table after the value of the content -** register has changed should have this bit set. -** -** If the OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG bits are set on P5 then -** the result is guaranteed to only be used as the argument of a length() -** or typeof() function, respectively. The loading of large blobs can be -** skipped for length() and all content loading can be skipped for typeof(). +** If the OPFLAG_LENGTHARG bit is set in P5 then the result is guaranteed +** to only be used by the length() function or the equivalent. The content +** of large blobs is not loaded, thus saving CPU cycles. If the +** OPFLAG_TYPEOFARG bit is set then the result will only be used by the +** typeof() function or the IS NULL or IS NOT NULL operators or the +** equivalent. In this case, all content loading can be omitted. */ -case OP_Column: { - int p2; /* column number to retrieve */ +case OP_Column: { /* ncycle */ + u32 p2; /* column number to retrieve */ VdbeCursor *pC; /* The VDBE cursor */ - BtCursor *pCrsr; /* The BTree cursor */ + BtCursor *pCrsr; /* The B-Tree cursor corresponding to pC */ u32 *aOffset; /* aOffset[i] is offset to start of data for i-th column */ int len; /* The length of the serialized data for the column */ int i; /* Loop counter */ @@ -84366,43 +94682,54 @@ case OP_Column: { u32 t; /* A type code from the record header */ Mem *pReg; /* PseudoTable input register */ - pC = p->apCsr[pOp->p1]; - p2 = pOp->p2; - - /* If the cursor cache is stale (meaning it is not currently point at - ** the correct row) then bring it up-to-date by doing the necessary - ** B-Tree seek. */ - rc = sqlite3VdbeCursorMoveto(&pC, &p2); - if( rc ) goto abort_due_to_error; - - assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); - pDest = &aMem[pOp->p3]; - memAboutToChange(p, pDest); assert( pOp->p1>=0 && pOp->p1nCursor ); + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); + pC = p->apCsr[pOp->p1]; + p2 = (u32)pOp->p2; + +op_column_restart: assert( pC!=0 ); - assert( p2nField ); + assert( p2<(u32)pC->nField + || (pC->eCurType==CURTYPE_PSEUDO && pC->seekResult==0) ); aOffset = pC->aOffset; + assert( aOffset==pC->aType+pC->nField ); assert( pC->eCurType!=CURTYPE_VTAB ); assert( pC->eCurType!=CURTYPE_PSEUDO || pC->nullRow ); assert( pC->eCurType!=CURTYPE_SORTER ); if( pC->cacheStatus!=p->cacheCtr ){ /*OPTIMIZATION-IF-FALSE*/ if( pC->nullRow ){ - if( pC->eCurType==CURTYPE_PSEUDO ){ + if( pC->eCurType==CURTYPE_PSEUDO && pC->seekResult>0 ){ /* For the special case of as pseudo-cursor, the seekResult field ** identifies the register that holds the record */ - assert( pC->seekResult>0 ); pReg = &aMem[pC->seekResult]; assert( pReg->flags & MEM_Blob ); assert( memIsValid(pReg) ); pC->payloadSize = pC->szRow = pReg->n; pC->aRow = (u8*)pReg->z; }else{ + pDest = &aMem[pOp->p3]; + memAboutToChange(p, pDest); sqlite3VdbeMemSetNull(pDest); goto op_column_out; } }else{ pCrsr = pC->uc.pCursor; + if( pC->deferredMoveto ){ + u32 iMap; + assert( !pC->isEphemeral ); + if( pC->ub.aAltMap && (iMap = pC->ub.aAltMap[1+p2])>0 ){ + pC = pC->pAltCursor; + p2 = iMap - 1; + goto op_column_restart; + } + rc = sqlite3VdbeFinishMoveto(pC); + if( rc ) goto abort_due_to_error; + }else if( sqlite3BtreeCursorHasMoved(pCrsr) ){ + rc = sqlite3VdbeHandleMovedCursor(pC); + if( rc ) goto abort_due_to_error; + goto op_column_restart; + } assert( pC->eCurType==CURTYPE_BTREE ); assert( pCrsr ); assert( sqlite3BtreeCursorIsValid(pCrsr) ); @@ -84410,15 +94737,15 @@ case OP_Column: { pC->aRow = sqlite3BtreePayloadFetch(pCrsr, &pC->szRow); assert( pC->szRow<=pC->payloadSize ); assert( pC->szRow<=65536 ); /* Maximum page size is 64KiB */ - if( pC->payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ - goto too_big; - } } pC->cacheStatus = p->cacheCtr; - pC->iHdrOffset = getVarint32(pC->aRow, aOffset[0]); + if( (aOffset[0] = pC->aRow[0])<0x80 ){ + pC->iHdrOffset = 1; + }else{ + pC->iHdrOffset = sqlite3GetVarint32(pC->aRow, aOffset); + } pC->nHdrParsed = 0; - if( pC->szRowaRow does not have to hold the entire row, but it does at least ** need to cover the header of the record. If pC->aRow does not contain @@ -84458,6 +94785,10 @@ case OP_Column: { testcase( aOffset[0]==0 ); goto op_column_read_header; } + }else if( sqlite3BtreeCursorHasMoved(pC->uc.pCursor) ){ + rc = sqlite3VdbeHandleMovedCursor(pC); + if( rc ) goto abort_due_to_error; + goto op_column_restart; } /* Make sure at least the first p2+1 entries of the header have been @@ -84465,19 +94796,19 @@ case OP_Column: { */ if( pC->nHdrParsed<=p2 ){ /* If there is more header available for parsing in the record, try - ** to extract additional fields up through the p2+1-th field + ** to extract additional fields up through the p2+1-th field */ if( pC->iHdrOffsetaRow==0 ){ memset(&sMem, 0, sizeof(sMem)); - rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, 0, aOffset[0], &sMem); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pC->uc.pCursor,aOffset[0],&sMem); if( rc!=SQLITE_OK ) goto abort_due_to_error; zData = (u8*)sMem.z; }else{ zData = pC->aRow; } - + /* Fill in pC->aType[i] and aOffset[i] values through the p2-th field. */ op_column_read_header: i = pC->nHdrParsed; @@ -84486,16 +94817,16 @@ case OP_Column: { zEndHdr = zData + aOffset[0]; testcase( zHdr>=zEndHdr ); do{ - if( (t = zHdr[0])<0x80 ){ + if( (pC->aType[i] = t = zHdr[0])<0x80 ){ zHdr++; offset64 += sqlite3VdbeOneByteSerialTypeLen(t); }else{ zHdr += sqlite3GetVarint32(zHdr, &t); + pC->aType[i] = t; offset64 += sqlite3VdbeSerialTypeLen(t); } - pC->aType[i++] = t; - aOffset[i] = (u32)(offset64 & 0xffffffff); - }while( i<=p2 && zHdrnHdrParsed<=p2 ){ + pDest = &aMem[pOp->p3]; + memAboutToChange(p, pDest); if( pOp->p4type==P4_MEM ){ sqlite3VdbeMemShallowCopy(pDest, pOp->p4.pMem, MEM_Static); }else{ @@ -84543,6 +94876,8 @@ case OP_Column: { */ assert( p2nHdrParsed ); assert( rc==SQLITE_OK ); + pDest = &aMem[pOp->p3]; + memAboutToChange(p, pDest); assert( sqlite3VdbeCheckMemInvariants(pDest) ); if( VdbeMemDynamic(pDest) ){ sqlite3VdbeMemSetNull(pDest); @@ -84563,6 +94898,7 @@ case OP_Column: { pDest->n = len = (t-12)/2; pDest->enc = encoding; if( pDest->szMalloc < len+2 ){ + if( len>db->aLimit[SQLITE_LIMIT_LENGTH] ) goto too_big; pDest->flags = MEM_Null; if( sqlite3VdbeMemGrow(pDest, len+2, 0) ) goto no_mem; }else{ @@ -84574,30 +94910,39 @@ case OP_Column: { pDest->flags = aFlag[t&1]; } }else{ + u8 p5; pDest->enc = encoding; + assert( pDest->db==db ); /* This branch happens only when content is on overflow pages */ - if( ((pOp->p5 & (OPFLAG_LENGTHARG|OPFLAG_TYPEOFARG))!=0 - && ((t>=12 && (t&1)==0) || (pOp->p5 & OPFLAG_TYPEOFARG)!=0)) - || (len = sqlite3VdbeSerialTypeLen(t))==0 + if( ((p5 = (pOp->p5 & OPFLAG_BYTELENARG))!=0 + && (p5==OPFLAG_TYPEOFARG + || (t>=12 && ((t&1)==0 || p5==OPFLAG_BYTELENARG)) + ) + ) + || sqlite3VdbeSerialTypeLen(t)==0 ){ /* Content is irrelevant for ** 1. the typeof() function, ** 2. the length(X) function if X is a blob, and ** 3. if the content length is zero. ** So we might as well use bogus content rather than reading - ** content from disk. + ** content from disk. ** ** Although sqlite3VdbeSerialGet() may read at most 8 bytes from the ** buffer passed to it, debugging function VdbeMemPrettyPrint() may - ** read up to 16. So 16 bytes of bogus content is supplied. + ** read more. Use the global constant sqlite3CtypeMap[] as the array, + ** as that array is 256 bytes long (plenty for VdbeMemPrettyPrint()) + ** and it begins with a bunch of zeros. */ - static u8 aZero[16]; /* This is the bogus content */ - sqlite3VdbeSerialGet(aZero, t, pDest); + sqlite3VdbeSerialGet((u8*)sqlite3CtypeMap, t, pDest); }else{ - rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, aOffset[p2], len, pDest); - if( rc!=SQLITE_OK ) goto abort_due_to_error; - sqlite3VdbeSerialGet((const u8*)pDest->z, t, pDest); - pDest->flags &= ~MEM_Ephem; + rc = vdbeColumnFromOverflow(pC, p2, t, aOffset[p2], + p->cacheCtr, colCacheCtr, pDest); + if( rc ){ + if( rc==SQLITE_NOMEM ) goto no_mem; + if( rc==SQLITE_TOOBIG ) goto too_big; + goto abort_due_to_error; + } } } @@ -84616,6 +94961,110 @@ op_column_corrupt: } } +/* Opcode: TypeCheck P1 P2 P3 P4 * +** Synopsis: typecheck(r[P1@P2]) +** +** Apply affinities to the range of P2 registers beginning with P1. +** Take the affinities from the Table object in P4. If any value +** cannot be coerced into the correct type, then raise an error. +** +** This opcode is similar to OP_Affinity except that this opcode +** forces the register type to the Table column type. This is used +** to implement "strict affinity". +** +** GENERATED ALWAYS AS ... STATIC columns are only checked if P3 +** is zero. When P3 is non-zero, no type checking occurs for +** static generated columns. Virtual columns are computed at query time +** and so they are never checked. +** +** Preconditions: +** +**
                  +**
                • P2 should be the number of non-virtual columns in the +** table of P4. +**
                • Table P4 should be a STRICT table. +**
                +** +** If any precondition is false, an assertion fault occurs. +*/ +case OP_TypeCheck: { + Table *pTab; + Column *aCol; + int i; + + assert( pOp->p4type==P4_TABLE ); + pTab = pOp->p4.pTab; + assert( pTab->tabFlags & TF_Strict ); + assert( pTab->nNVCol==pOp->p2 ); + aCol = pTab->aCol; + pIn1 = &aMem[pOp->p1]; + for(i=0; inCol; i++){ + if( aCol[i].colFlags & COLFLAG_GENERATED ){ + if( aCol[i].colFlags & COLFLAG_VIRTUAL ) continue; + if( pOp->p3 ){ pIn1++; continue; } + } + assert( pIn1 < &aMem[pOp->p1+pOp->p2] ); + applyAffinity(pIn1, aCol[i].affinity, encoding); + if( (pIn1->flags & MEM_Null)==0 ){ + switch( aCol[i].eCType ){ + case COLTYPE_BLOB: { + if( (pIn1->flags & MEM_Blob)==0 ) goto vdbe_type_error; + break; + } + case COLTYPE_INTEGER: + case COLTYPE_INT: { + if( (pIn1->flags & MEM_Int)==0 ) goto vdbe_type_error; + break; + } + case COLTYPE_TEXT: { + if( (pIn1->flags & MEM_Str)==0 ) goto vdbe_type_error; + break; + } + case COLTYPE_REAL: { + testcase( (pIn1->flags & (MEM_Real|MEM_IntReal))==MEM_Real ); + assert( (pIn1->flags & MEM_IntReal)==0 ); + if( pIn1->flags & MEM_Int ){ + /* When applying REAL affinity, if the result is still an MEM_Int + ** that will fit in 6 bytes, then change the type to MEM_IntReal + ** so that we keep the high-resolution integer value but know that + ** the type really wants to be REAL. */ + testcase( pIn1->u.i==140737488355328LL ); + testcase( pIn1->u.i==140737488355327LL ); + testcase( pIn1->u.i==-140737488355328LL ); + testcase( pIn1->u.i==-140737488355329LL ); + if( pIn1->u.i<=140737488355327LL && pIn1->u.i>=-140737488355328LL){ + pIn1->flags |= MEM_IntReal; + pIn1->flags &= ~MEM_Int; + }else{ + pIn1->u.r = (double)pIn1->u.i; + pIn1->flags |= MEM_Real; + pIn1->flags &= ~MEM_Int; + } + }else if( (pIn1->flags & (MEM_Real|MEM_IntReal))==0 ){ + goto vdbe_type_error; + } + break; + } + default: { + /* COLTYPE_ANY. Accept anything. */ + break; + } + } + } + REGISTER_TRACE((int)(pIn1-aMem), pIn1); + pIn1++; + } + assert( pIn1 == &aMem[pOp->p1+pOp->p2] ); + break; + +vdbe_type_error: + sqlite3VdbeError(p, "cannot store %s value in %s column %s.%s", + vdbeMemTypeName(pIn1), sqlite3StdType[aCol[i].eCType-1], + pTab->zName, aCol[i].zCnName); + rc = SQLITE_CONSTRAINT_DATATYPE; + goto abort_due_to_error; +} + /* Opcode: Affinity P1 P2 * P4 * ** Synopsis: affinity(r[P1@P2]) ** @@ -84633,12 +95082,33 @@ case OP_Affinity: { assert( pOp->p2>0 ); assert( zAffinity[pOp->p2]==0 ); pIn1 = &aMem[pOp->p1]; - do{ + while( 1 /*exit-by-break*/ ){ assert( pIn1 <= &p->aMem[(p->nMem+1 - p->nCursor)] ); - assert( memIsValid(pIn1) ); - applyAffinity(pIn1, *(zAffinity++), encoding); + assert( zAffinity[0]==SQLITE_AFF_NONE || memIsValid(pIn1) ); + applyAffinity(pIn1, zAffinity[0], encoding); + if( zAffinity[0]==SQLITE_AFF_REAL && (pIn1->flags & MEM_Int)!=0 ){ + /* When applying REAL affinity, if the result is still an MEM_Int + ** that will fit in 6 bytes, then change the type to MEM_IntReal + ** so that we keep the high-resolution integer value but know that + ** the type really wants to be REAL. */ + testcase( pIn1->u.i==140737488355328LL ); + testcase( pIn1->u.i==140737488355327LL ); + testcase( pIn1->u.i==-140737488355328LL ); + testcase( pIn1->u.i==-140737488355329LL ); + if( pIn1->u.i<=140737488355327LL && pIn1->u.i>=-140737488355328LL ){ + pIn1->flags |= MEM_IntReal; + pIn1->flags &= ~MEM_Int; + }else{ + pIn1->u.r = (double)pIn1->u.i; + pIn1->flags |= MEM_Real; + pIn1->flags &= ~(MEM_Int|MEM_Str); + } + } + REGISTER_TRACE((int)(pIn1-aMem), pIn1); + zAffinity++; + if( zAffinity[0]==0 ) break; pIn1++; - }while( zAffinity[0] ); + } break; } @@ -84657,9 +95127,19 @@ case OP_Affinity: { ** macros defined in sqliteInt.h. ** ** If P4 is NULL then all index fields have the affinity BLOB. +** +** The meaning of P5 depends on whether or not the SQLITE_ENABLE_NULL_TRIM +** compile-time option is enabled: +** +** * If SQLITE_ENABLE_NULL_TRIM is enabled, then the P5 is the index +** of the right-most table that can be null-trimmed. +** +** * If SQLITE_ENABLE_NULL_TRIM is omitted, then P5 has the value +** OPFLAG_NOCHNG_MAGIC if the OP_MakeRecord opcode is allowed to +** accept no-change records with serial_type 10. This value is +** only used inside an assert() and does not affect the end result. */ case OP_MakeRecord: { - u8 *zNewRecord; /* A buffer to hold the data for the new record */ Mem *pRec; /* The new record */ u64 nData; /* Number of bytes of data space */ int nHdr; /* Number of bytes of header space */ @@ -84671,22 +95151,21 @@ case OP_MakeRecord: { Mem *pLast; /* Last field of the record */ int nField; /* Number of fields in the record */ char *zAffinity; /* The affinity string for the record */ - int file_format; /* File format to use for encoding */ - int i; /* Space used in zNewRecord[] header */ - int j; /* Space used in zNewRecord[] content */ u32 len; /* Length of a field */ + u8 *zHdr; /* Where to write next byte of the header */ + u8 *zPayload; /* Where to write next byte of the payload */ /* Assuming the record contains N fields, the record format looks ** like this: ** ** ------------------------------------------------------------------------ - ** | hdr-size | type 0 | type 1 | ... | type N-1 | data0 | ... | data N-1 | + ** | hdr-size | type 0 | type 1 | ... | type N-1 | data0 | ... | data N-1 | ** ------------------------------------------------------------------------ ** ** Data(0) is taken from register P1. Data(1) comes from register P1+1 ** and so forth. ** - ** Each type field is a varint representing the serial type of the + ** Each type field is a varint representing the serial type of the ** corresponding data element (see sqlite3VdbeSerialType()). The ** hdr-size field is also a varint which is the offset from the beginning ** of the record to data0. @@ -84700,7 +95179,6 @@ case OP_MakeRecord: { pData0 = &aMem[nField]; nField = pOp->p2; pLast = &pData0[nField-1]; - file_format = p->minWriteFileFormat; /* Identify the output register */ assert( pOp->p3p1 || pOp->p3>=pOp->p1+pOp->p2 ); @@ -84713,7 +95191,14 @@ case OP_MakeRecord: { if( zAffinity ){ pRec = pData0; do{ - applyAffinity(pRec++, *(zAffinity++), encoding); + applyAffinity(pRec, zAffinity[0], encoding); + if( zAffinity[0]==SQLITE_AFF_REAL && (pRec->flags & MEM_Int) ){ + pRec->flags |= MEM_IntReal; + pRec->flags &= ~(MEM_Int); + } + REGISTER_TRACE((int)(pRec-aMem), pRec); + zAffinity++; + pRec++; assert( zAffinity[0]==0 || pRec<=pLast ); }while( zAffinity[0] ); } @@ -84733,34 +95218,122 @@ case OP_MakeRecord: { #endif /* Loop through the elements that will make up the record to figure - ** out how much space is required for the new record. + ** out how much space is required for the new record. After this loop, + ** the Mem.uTemp field of each term should hold the serial-type that will + ** be used for that term in the generated record: + ** + ** Mem.uTemp value type + ** --------------- --------------- + ** 0 NULL + ** 1 1-byte signed integer + ** 2 2-byte signed integer + ** 3 3-byte signed integer + ** 4 4-byte signed integer + ** 5 6-byte signed integer + ** 6 8-byte signed integer + ** 7 IEEE float + ** 8 Integer constant 0 + ** 9 Integer constant 1 + ** 10,11 reserved for expansion + ** N>=12 and even BLOB + ** N>=13 and odd text + ** + ** The following additional values are computed: + ** nHdr Number of bytes needed for the record header + ** nData Number of bytes of data space needed for the record + ** nZero Zero bytes at the end of the record */ pRec = pLast; do{ assert( memIsValid(pRec) ); - serial_type = sqlite3VdbeSerialType(pRec, file_format, &len); - if( pRec->flags & MEM_Zero ){ - if( serial_type==0 ){ + if( pRec->flags & MEM_Null ){ + if( pRec->flags & MEM_Zero ){ /* Values with MEM_Null and MEM_Zero are created by xColumn virtual ** table methods that never invoke sqlite3_result_xxxxx() while ** computing an unchanging column value in an UPDATE statement. ** Give such values a special internal-use-only serial-type of 10 ** so that they can be passed through to xUpdate and have ** a true sqlite3_value_nochange(). */ +#ifndef SQLITE_ENABLE_NULL_TRIM assert( pOp->p5==OPFLAG_NOCHNG_MAGIC || CORRUPT_DB ); - serial_type = 10; - }else if( nData ){ - if( sqlite3VdbeMemExpandBlob(pRec) ) goto no_mem; +#endif + pRec->uTemp = 10; }else{ - nZero += pRec->u.nZero; - len -= pRec->u.nZero; + pRec->uTemp = 0; } + nHdr++; + }else if( pRec->flags & (MEM_Int|MEM_IntReal) ){ + /* Figure out whether to use 1, 2, 4, 6 or 8 bytes. */ + i64 i = pRec->u.i; + u64 uu; + testcase( pRec->flags & MEM_Int ); + testcase( pRec->flags & MEM_IntReal ); + if( i<0 ){ + uu = ~i; + }else{ + uu = i; + } + nHdr++; + testcase( uu==127 ); testcase( uu==128 ); + testcase( uu==32767 ); testcase( uu==32768 ); + testcase( uu==8388607 ); testcase( uu==8388608 ); + testcase( uu==2147483647 ); testcase( uu==2147483648LL ); + testcase( uu==140737488355327LL ); testcase( uu==140737488355328LL ); + if( uu<=127 ){ + if( (i&1)==i && p->minWriteFileFormat>=4 ){ + pRec->uTemp = 8+(u32)uu; + }else{ + nData++; + pRec->uTemp = 1; + } + }else if( uu<=32767 ){ + nData += 2; + pRec->uTemp = 2; + }else if( uu<=8388607 ){ + nData += 3; + pRec->uTemp = 3; + }else if( uu<=2147483647 ){ + nData += 4; + pRec->uTemp = 4; + }else if( uu<=140737488355327LL ){ + nData += 6; + pRec->uTemp = 5; + }else{ + nData += 8; + if( pRec->flags & MEM_IntReal ){ + /* If the value is IntReal and is going to take up 8 bytes to store + ** as an integer, then we might as well make it an 8-byte floating + ** point value */ + pRec->u.r = (double)pRec->u.i; + pRec->flags &= ~MEM_IntReal; + pRec->flags |= MEM_Real; + pRec->uTemp = 7; + }else{ + pRec->uTemp = 6; + } + } + }else if( pRec->flags & MEM_Real ){ + nHdr++; + nData += 8; + pRec->uTemp = 7; + }else{ + assert( db->mallocFailed || pRec->flags&(MEM_Str|MEM_Blob) ); + assert( pRec->n>=0 ); + len = (u32)pRec->n; + serial_type = (len*2) + 12 + ((pRec->flags & MEM_Str)!=0); + if( pRec->flags & MEM_Zero ){ + serial_type += pRec->u.nZero*2; + if( nData ){ + if( sqlite3VdbeMemExpandBlob(pRec) ) goto no_mem; + len += pRec->u.nZero; + }else{ + nZero += pRec->u.nZero; + } + } + nData += len; + nHdr += sqlite3VarintLen(serial_type); + pRec->uTemp = serial_type; } - nData += len; - testcase( serial_type==127 ); - testcase( serial_type==128 ); - nHdr += serial_type<=127 ? 1 : sqlite3VarintLen(serial_type); - pRec->uTemp = serial_type; if( pRec==pData0 ) break; pRec--; }while(1); @@ -84781,56 +95354,109 @@ case OP_MakeRecord: { if( nVarintdb->aLimit[SQLITE_LIMIT_LENGTH] ){ - goto too_big; - } - /* Make sure the output register has a buffer large enough to store + /* Make sure the output register has a buffer large enough to store ** the new record. The output register (pOp->p3) is not allowed to ** be one of the input registers (because the following call to ** sqlite3VdbeMemClearAndResize() could clobber the value before it is used). */ - if( sqlite3VdbeMemClearAndResize(pOut, (int)nByte) ){ - goto no_mem; + if( nByte+nZero<=pOut->szMalloc ){ + /* The output register is already large enough to hold the record. + ** No error checks or buffer enlargement is required */ + pOut->z = pOut->zMalloc; + }else{ + /* Need to make sure that the output is not too big and then enlarge + ** the output register to hold the full result */ + if( nByte+nZero>db->aLimit[SQLITE_LIMIT_LENGTH] ){ + goto too_big; + } + if( sqlite3VdbeMemClearAndResize(pOut, (int)nByte) ){ + goto no_mem; + } } - zNewRecord = (u8 *)pOut->z; - - /* Write the record */ - i = putVarint32(zNewRecord, nHdr); - j = nHdr; - assert( pData0<=pLast ); - pRec = pData0; - do{ - serial_type = pRec->uTemp; - /* EVIDENCE-OF: R-06529-47362 Following the size varint are one or more - ** additional varints, one per column. */ - i += putVarint32(&zNewRecord[i], serial_type); /* serial type */ - /* EVIDENCE-OF: R-64536-51728 The values for each column in the record - ** immediately follow the header. */ - j += sqlite3VdbeSerialPut(&zNewRecord[j], pRec, serial_type); /* content */ - }while( (++pRec)<=pLast ); - assert( i==nHdr ); - assert( j==nByte ); - - assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pOut->n = (int)nByte; pOut->flags = MEM_Blob; if( nZero ){ pOut->u.nZero = nZero; pOut->flags |= MEM_Zero; } - REGISTER_TRACE(pOp->p3, pOut); UPDATE_MAX_BLOBSIZE(pOut); + zHdr = (u8 *)pOut->z; + zPayload = zHdr + nHdr; + + /* Write the record */ + if( nHdr<0x80 ){ + *(zHdr++) = nHdr; + }else{ + zHdr += sqlite3PutVarint(zHdr,nHdr); + } + assert( pData0<=pLast ); + pRec = pData0; + while( 1 /*exit-by-break*/ ){ + serial_type = pRec->uTemp; + /* EVIDENCE-OF: R-06529-47362 Following the size varint are one or more + ** additional varints, one per column. + ** EVIDENCE-OF: R-64536-51728 The values for each column in the record + ** immediately follow the header. */ + if( serial_type<=7 ){ + *(zHdr++) = serial_type; + if( serial_type==0 ){ + /* NULL value. No change in zPayload */ + }else{ + u64 v; + u32 i; + if( serial_type==7 ){ + assert( sizeof(v)==sizeof(pRec->u.r) ); + memcpy(&v, &pRec->u.r, sizeof(v)); + swapMixedEndianFloat(v); + }else{ + v = pRec->u.i; + } + len = i = sqlite3SmallTypeSizes[serial_type]; + assert( i>0 ); + while( 1 /*exit-by-break*/ ){ + zPayload[--i] = (u8)(v&0xFF); + if( i==0 ) break; + v >>= 8; + } + zPayload += len; + } + }else if( serial_type<0x80 ){ + *(zHdr++) = serial_type; + if( serial_type>=14 && pRec->n>0 ){ + assert( pRec->z!=0 ); + memcpy(zPayload, pRec->z, pRec->n); + zPayload += pRec->n; + } + }else{ + zHdr += sqlite3PutVarint(zHdr, serial_type); + if( pRec->n ){ + assert( pRec->z!=0 ); + memcpy(zPayload, pRec->z, pRec->n); + zPayload += pRec->n; + } + } + if( pRec==pLast ) break; + pRec++; + } + assert( nHdr==(int)(zHdr - (u8*)pOut->z) ); + assert( nByte==(int)(zPayload - (u8*)pOut->z) ); + + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); + REGISTER_TRACE(pOp->p3, pOut); break; } -/* Opcode: Count P1 P2 * * * +/* Opcode: Count P1 P2 P3 * * ** Synopsis: r[P2]=count() ** -** Store the number of entries (an integer value) in the table or index -** opened by cursor P1 in register P2 +** Store the number of entries (an integer value) in the table or index +** opened by cursor P1 in register P2. +** +** If P3==0, then an exact count is obtained, which involves visiting +** every btree page of the table. But if P3 is non-zero, an estimate +** is returned based on the current cursor position. */ -#ifndef SQLITE_OMIT_BTREECOUNT case OP_Count: { /* out2 */ i64 nEntry; BtCursor *pCrsr; @@ -84838,20 +95464,24 @@ case OP_Count: { /* out2 */ assert( p->apCsr[pOp->p1]->eCurType==CURTYPE_BTREE ); pCrsr = p->apCsr[pOp->p1]->uc.pCursor; assert( pCrsr ); - nEntry = 0; /* Not needed. Only used to silence a warning. */ - rc = sqlite3BtreeCount(pCrsr, &nEntry); - if( rc ) goto abort_due_to_error; + if( pOp->p3 ){ + nEntry = sqlite3BtreeRowCountEst(pCrsr); + }else{ + nEntry = 0; /* Not needed. Only used to silence a warning. */ + rc = sqlite3BtreeCount(db, pCrsr, &nEntry); + if( rc ) goto abort_due_to_error; + } pOut = out2Prerelease(p, pOp); pOut->u.i = nEntry; - break; + goto check_for_interrupt; } -#endif /* Opcode: Savepoint P1 * * P4 * ** ** Open, release or rollback the savepoint named by parameter P4, depending -** on the value of P1. To open a new savepoint, P1==0. To release (commit) an -** existing savepoint, P1==1, or to rollback an existing savepoint P1==2. +** on the value of P1. To open a new savepoint set P1==0 (SAVEPOINT_BEGIN). +** To release (commit) an existing savepoint set P1==1 (SAVEPOINT_RELEASE). +** To rollback an existing savepoint set P1==2 (SAVEPOINT_ROLLBACK). */ case OP_Savepoint: { int p1; /* Value of P1 operand */ @@ -84867,7 +95497,7 @@ case OP_Savepoint: { zName = pOp->p4.z; /* Assert that the p1 parameter is valid. Also that if there is no open - ** transaction, then there cannot be any savepoints. + ** transaction, then there cannot be any savepoints. */ assert( db->pSavepoint==0 || db->autoCommit==0 ); assert( p1==SAVEPOINT_BEGIN||p1==SAVEPOINT_RELEASE||p1==SAVEPOINT_ROLLBACK ); @@ -84877,7 +95507,7 @@ case OP_Savepoint: { if( p1==SAVEPOINT_BEGIN ){ if( db->nVdbeWrite>0 ){ - /* A new savepoint cannot be created if there are active write + /* A new savepoint cannot be created if there are active write ** statements (i.e. open read/write incremental blob handles). */ sqlite3VdbeError(p, "cannot open savepoint - SQL statements in progress"); @@ -84901,7 +95531,7 @@ case OP_Savepoint: { if( pNew ){ pNew->zName = (char *)&pNew[1]; memcpy(pNew->zName, zName, nName+1); - + /* If there is no open transaction, then mark this as a special ** "transaction savepoint". */ if( db->autoCommit ){ @@ -84919,12 +95549,13 @@ case OP_Savepoint: { } } }else{ + assert( p1==SAVEPOINT_RELEASE || p1==SAVEPOINT_ROLLBACK ); iSavepoint = 0; /* Find the named savepoint. If there is no such savepoint, then an ** an error is returned to the user. */ for( - pSavepoint = db->pSavepoint; + pSavepoint = db->pSavepoint; pSavepoint && sqlite3StrICmp(pSavepoint->zName, zName); pSavepoint = pSavepoint->pNext ){ @@ -84934,7 +95565,7 @@ case OP_Savepoint: { sqlite3VdbeError(p, "no such savepoint: %s", zName); rc = SQLITE_ERROR; }else if( db->nVdbeWrite>0 && p1==SAVEPOINT_RELEASE ){ - /* It is not possible to release (commit) a savepoint if there are + /* It is not possible to release (commit) a savepoint if there are ** active write statements. */ sqlite3VdbeError(p, "cannot release savepoint - " @@ -84943,8 +95574,8 @@ case OP_Savepoint: { }else{ /* Determine whether or not this is a transaction savepoint. If so, - ** and this is a RELEASE command, then the current transaction - ** is committed. + ** and this is a RELEASE command, then the current transaction + ** is committed. */ int isTransaction = pSavepoint->pNext==0 && db->isTransactionSavepoint; if( isTransaction && p1==SAVEPOINT_RELEASE ){ @@ -84958,8 +95589,12 @@ case OP_Savepoint: { p->rc = rc = SQLITE_BUSY; goto vdbe_return; } - db->isTransactionSavepoint = 0; rc = p->rc; + if( rc ){ + db->autoCommit = 0; + }else{ + db->isTransactionSavepoint = 0; + } }else{ int isSchemaChange; iSavepoint = db->nSavepoint - iSavepoint - 1; @@ -84972,6 +95607,7 @@ case OP_Savepoint: { if( rc!=SQLITE_OK ) goto abort_due_to_error; } }else{ + assert( p1==SAVEPOINT_RELEASE ); isSchemaChange = 0; } for(ii=0; iinDb; ii++){ @@ -84981,13 +95617,14 @@ case OP_Savepoint: { } } if( isSchemaChange ){ - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, 0); sqlite3ResetAllSchemasOfConnection(db); db->mDbFlags |= DBFLAG_SchemaChange; } } - - /* Regardless of whether this is a RELEASE or ROLLBACK, destroy all + if( rc ) goto abort_due_to_error; + + /* Regardless of whether this is a RELEASE or ROLLBACK, destroy all ** savepoints nested inside of the savepoint being operated on. */ while( db->pSavepoint!=pSavepoint ){ pTmp = db->pSavepoint; @@ -84996,8 +95633,8 @@ case OP_Savepoint: { db->nSavepoint--; } - /* If it is a RELEASE, then destroy the savepoint being operated on - ** too. If it is a ROLLBACK TO, then set the number of deferred + /* If it is a RELEASE, then destroy the savepoint being operated on + ** too. If it is a ROLLBACK TO, then set the number of deferred ** constraint violations present in the database to the value stored ** when the savepoint was created. */ if( p1==SAVEPOINT_RELEASE ){ @@ -85008,6 +95645,7 @@ case OP_Savepoint: { db->nSavepoint--; } }else{ + assert( p1==SAVEPOINT_ROLLBACK ); db->nDeferredCons = pSavepoint->nDeferredCons; db->nDeferredImmCons = pSavepoint->nDeferredImmCons; } @@ -85019,7 +95657,10 @@ case OP_Savepoint: { } } if( rc ) goto abort_due_to_error; - + if( p->eVdbeState==VDBE_HALT_STATE ){ + rc = SQLITE_DONE; + goto vdbe_return; + } break; } @@ -85050,7 +95691,7 @@ case OP_AutoCommit: { db->autoCommit = 1; }else if( desiredAutoCommit && db->nVdbeWrite>0 ){ /* If this instruction implements a COMMIT and other VMs are writing - ** return an error indicating that the other VMs must complete first. + ** return an error indicating that the other VMs must complete first. */ sqlite3VdbeError(p, "cannot commit transaction - " "SQL statements in progress"); @@ -85067,7 +95708,6 @@ case OP_AutoCommit: { p->rc = rc = SQLITE_BUSY; goto vdbe_return; } - assert( db->nStatement==0 ); sqlite3CloseSavepoints(db); if( p->rc==SQLITE_OK ){ rc = SQLITE_DONE; @@ -85080,20 +95720,21 @@ case OP_AutoCommit: { (!desiredAutoCommit)?"cannot start a transaction within a transaction":( (iRollback)?"cannot rollback - no transaction is active": "cannot commit - no transaction is active")); - + rc = SQLITE_ERROR; goto abort_due_to_error; } - break; + /*NOTREACHED*/ assert(0); } /* Opcode: Transaction P1 P2 P3 P4 P5 ** ** Begin a transaction on database P1 if a transaction is not already ** active. -** If P2 is non-zero, then a write-transaction is started, or if a +** If P2 is non-zero, then a write-transaction is started, or if a ** read-transaction is already active, it is upgraded to a write-transaction. -** If P2 is zero, then a read-transaction is started. +** If P2 is zero, then a read-transaction is started. If P2 is 2 or more +** then an exclusive transaction is started. ** ** P1 is the index of the database file on which the transaction is ** started. Index 0 is the main database file and index 1 is the @@ -85123,21 +95764,31 @@ case OP_AutoCommit: { */ case OP_Transaction: { Btree *pBt; - int iMeta; - int iGen; + Db *pDb; + int iMeta = 0; assert( p->bIsReader ); assert( p->readOnly==0 || pOp->p2==0 ); + assert( pOp->p2>=0 && pOp->p2<=2 ); assert( pOp->p1>=0 && pOp->p1nDb ); assert( DbMaskTest(p->btreeMask, pOp->p1) ); - if( pOp->p2 && (db->flags & SQLITE_QueryOnly)!=0 ){ - rc = SQLITE_READONLY; + assert( rc==SQLITE_OK ); + if( pOp->p2 && (db->flags & (SQLITE_QueryOnly|SQLITE_CorruptRdOnly))!=0 ){ + if( db->flags & SQLITE_QueryOnly ){ + /* Writes prohibited by the "PRAGMA query_only=TRUE" statement */ + rc = SQLITE_READONLY; + }else{ + /* Writes prohibited due to a prior SQLITE_CORRUPT in the current + ** transaction */ + rc = SQLITE_CORRUPT; + } goto abort_due_to_error; } - pBt = db->aDb[pOp->p1].pBt; + pDb = &db->aDb[pOp->p1]; + pBt = pDb->pBt; if( pBt ){ - rc = sqlite3BtreeBeginTrans(pBt, pOp->p2); + rc = sqlite3BtreeBeginTrans(pBt, pOp->p2, &iMeta); testcase( rc==SQLITE_BUSY_SNAPSHOT ); testcase( rc==SQLITE_BUSY_RECOVERY ); if( rc!=SQLITE_OK ){ @@ -85149,13 +95800,14 @@ case OP_Transaction: { goto abort_due_to_error; } - if( pOp->p2 && p->usesStmtJournal - && (db->autoCommit==0 || db->nVdbeRead>1) + if( p->usesStmtJournal + && pOp->p2 + && (db->autoCommit==0 || db->nVdbeRead>1) ){ - assert( sqlite3BtreeIsInTrans(pBt) ); + assert( sqlite3BtreeTxnState(pBt)==SQLITE_TXN_WRITE ); if( p->iStatement==0 ){ assert( db->nStatement>=0 && db->nSavepoint>=0 ); - db->nStatement++; + db->nStatement++; p->iStatement = db->nSavepoint + db->nStatement; } @@ -85170,22 +95822,20 @@ case OP_Transaction: { p->nStmtDefCons = db->nDeferredCons; p->nStmtDefImmCons = db->nDeferredImmCons; } - - /* Gather the schema version number for checking: + } + assert( pOp->p5==0 || pOp->p4type==P4_INT32 ); + if( rc==SQLITE_OK + && pOp->p5 + && (iMeta!=pOp->p3 || pDb->pSchema->iGeneration!=pOp->p4.i) + ){ + /* ** IMPLEMENTATION-OF: R-03189-51135 As each SQL statement runs, the schema ** version is checked to ensure that the schema has not changed since the ** SQL statement was prepared. */ - sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta); - iGen = db->aDb[pOp->p1].pSchema->iGeneration; - }else{ - iGen = iMeta = 0; - } - assert( pOp->p5==0 || pOp->p4type==P4_INT32 ); - if( pOp->p5 && (iMeta!=pOp->p3 || iGen!=pOp->p4.i) ){ sqlite3DbFree(db, p->zErrMsg); p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed"); - /* If the schema-cookie from the database file matches the cookie + /* If the schema-cookie from the database file matches the cookie ** stored with the in-memory representation of the schema, do ** not reload the schema from the database file. ** @@ -85195,7 +95845,7 @@ case OP_Transaction: { ** prepared queries. If such a query is out-of-date, we do not want to ** discard the database schema, as the user code implementing the ** v-table would have to be ready for the sqlite3_vtab structure itself - ** to be invalidated whenever sqlite3_step() is called from within + ** to be invalidated whenever sqlite3_step() is called from within ** a v-table method. */ if( db->aDb[pOp->p1].pSchema->schema_cookie!=iMeta ){ @@ -85203,6 +95853,11 @@ case OP_Transaction: { } p->expired = 1; rc = SQLITE_SCHEMA; + + /* Set changeCntOn to 0 to prevent the value returned by sqlite3_changes() + ** from being modified in sqlite3VdbeHalt(). If this statement is + ** reprepared, changeCntOn will be set again. */ + p->changeCntOn = 0; } if( rc ) goto abort_due_to_error; break; @@ -85239,15 +95894,20 @@ case OP_ReadCookie: { /* out2 */ break; } -/* Opcode: SetCookie P1 P2 P3 * * +/* Opcode: SetCookie P1 P2 P3 * P5 ** ** Write the integer value P3 into cookie number P2 of database P1. ** P2==1 is the schema version. P2==2 is the database format. -** P2==3 is the recommended pager cache -** size, and so forth. P1==0 is the main database file and P1==1 is the +** P2==3 is the recommended pager cache +** size, and so forth. P1==0 is the main database file and P1==1 is the ** database file used to store temporary tables. ** ** A transaction must be started before executing this opcode. +** +** If P2 is the SCHEMA_VERSION cookie (cookie number 1) then the internal +** schema version is set to P3-P5. The "PRAGMA schema_version=N" statement +** has P5 set to 1, so that the internal schema version will be different +** from the database schema version, resulting in a schema reset. */ case OP_SetCookie: { Db *pDb; @@ -85264,8 +95924,9 @@ case OP_SetCookie: { rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, pOp->p3); if( pOp->p2==BTREE_SCHEMA_VERSION ){ /* When the schema cookie changes, record the new cookie internally */ - pDb->pSchema->schema_cookie = pOp->p3; + *(u32*)&pDb->pSchema->schema_cookie = *(u32*)&pOp->p3 - pOp->p5; db->mDbFlags |= DBFLAG_SchemaChange; + sqlite3FkClearTriggerCache(db, pOp->p1); }else if( pOp->p2==BTREE_FILE_FORMAT ){ /* Record changes in the file format */ pDb->pSchema->file_format = pOp->p3; @@ -85273,7 +95934,7 @@ case OP_SetCookie: { if( pOp->p1==1 ){ /* Invalidate all prepared statements whenever the TEMP database ** schema is changed. Ticket #1644 */ - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, 0); p->expired = 0; } if( rc ) goto abort_due_to_error; @@ -85284,71 +95945,90 @@ case OP_SetCookie: { ** Synopsis: root=P2 iDb=P3 ** ** Open a read-only cursor for the database table whose root page is -** P2 in a database file. The database file is determined by P3. -** P3==0 means the main database, P3==1 means the database used for +** P2 in a database file. The database file is determined by P3. +** P3==0 means the main database, P3==1 means the database used for ** temporary tables, and P3>1 means used the corresponding attached ** database. Give the new cursor an identifier of P1. The P1 ** values need not be contiguous but all P1 values should be small integers. ** It is an error for P1 to be negative. ** -** If P5!=0 then use the content of register P2 as the root page, not -** the value of P2 itself. -** -** There will be a read lock on the database whenever there is an -** open cursor. If the database was unlocked prior to this instruction -** then a read lock is acquired as part of this instruction. A read -** lock allows other processes to read the database but prohibits -** any other process from modifying the database. The read lock is -** released when all cursors are closed. If this instruction attempts -** to get a read lock but fails, the script terminates with an -** SQLITE_BUSY error code. +** Allowed P5 bits: +**
                  +**
                • 0x02 OPFLAG_SEEKEQ: This cursor will only be used for +** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT +** of OP_SeekLE/OP_IdxLT) +**
                ** ** The P4 value may be either an integer (P4_INT32) or a pointer to -** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo -** structure, then said structure defines the content and collating -** sequence of the index being opened. Otherwise, if P4 is an integer -** value, it is set to the number of columns in the table. +** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo +** object, then table being opened must be an [index b-tree] where the +** KeyInfo object defines the content and collating +** sequence of that index b-tree. Otherwise, if P4 is an integer +** value, then the table being opened must be a [table b-tree] with a +** number of columns no less than the value of P4. ** ** See also: OpenWrite, ReopenIdx */ /* Opcode: ReopenIdx P1 P2 P3 P4 P5 ** Synopsis: root=P2 iDb=P3 ** -** The ReopenIdx opcode works exactly like ReadOpen except that it first -** checks to see if the cursor on P1 is already open with a root page -** number of P2 and if it is this opcode becomes a no-op. In other words, +** The ReopenIdx opcode works like OP_OpenRead except that it first +** checks to see if the cursor on P1 is already open on the same +** b-tree and if it is this opcode becomes a no-op. In other words, ** if the cursor is already open, do not reopen it. ** -** The ReopenIdx opcode may only be used with P5==0 and with P4 being -** a P4_KEYINFO object. Furthermore, the P3 value must be the same as -** every other ReopenIdx or OpenRead for the same cursor number. +** The ReopenIdx opcode may only be used with P5==0 or P5==OPFLAG_SEEKEQ +** and with P4 being a P4_KEYINFO object. Furthermore, the P3 value must +** be the same as every other ReopenIdx or OpenRead for the same cursor +** number. ** -** See the OpenRead opcode documentation for additional information. +** Allowed P5 bits: +**
                  +**
                • 0x02 OPFLAG_SEEKEQ: This cursor will only be used for +** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT +** of OP_SeekLE/OP_IdxLT) +**
                +** +** See also: OP_OpenRead, OP_OpenWrite */ /* Opcode: OpenWrite P1 P2 P3 P4 P5 ** Synopsis: root=P2 iDb=P3 ** ** Open a read/write cursor named P1 on the table or index whose root -** page is P2. Or if P5!=0 use the content of register P2 to find the -** root page. +** page is P2 (or whose root page is held in register P2 if the +** OPFLAG_P2ISREG bit is set in P5 - see below). ** ** The P4 value may be either an integer (P4_INT32) or a pointer to -** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo -** structure, then said structure defines the content and collating -** sequence of the index being opened. Otherwise, if P4 is an integer -** value, it is set to the number of columns in the table, or to the -** largest index of any column of the table that is actually used. +** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo +** object, then table being opened must be an [index b-tree] where the +** KeyInfo object defines the content and collating +** sequence of that index b-tree. Otherwise, if P4 is an integer +** value, then the table being opened must be a [table b-tree] with a +** number of columns no less than the value of P4. ** -** This instruction works just like OpenRead except that it opens the cursor -** in read/write mode. For a given table, there can be one or more read-only -** cursors or a single read/write cursor but not both. +** Allowed P5 bits: +**
                  +**
                • 0x02 OPFLAG_SEEKEQ: This cursor will only be used for +** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT +** of OP_SeekLE/OP_IdxLT) +**
                • 0x08 OPFLAG_FORDELETE: This cursor is used only to seek +** and subsequently delete entries in an index btree. This is a +** hint to the storage engine that the storage engine is allowed to +** ignore. The hint is not used by the official SQLite b*tree storage +** engine, but is used by COMDB2. +**
                • 0x10 OPFLAG_P2ISREG: Use the content of register P2 +** as the root page, not the value of P2 itself. +**
                ** -** See also OpenRead. +** This instruction works like OpenRead except that it opens the cursor +** in read/write mode. +** +** See also: OP_OpenRead, OP_ReopenIdx */ -case OP_ReopenIdx: { +case OP_ReopenIdx: { /* ncycle */ int nField; KeyInfo *pKeyInfo; - int p2; + u32 p2; int iDb; int wrFlag; Btree *pX; @@ -85360,11 +96040,13 @@ case OP_ReopenIdx: { pCur = p->apCsr[pOp->p1]; if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){ assert( pCur->iDb==pOp->p3 ); /* Guaranteed by the code generator */ + assert( pCur->eCurType==CURTYPE_BTREE ); + sqlite3BtreeClearCursor(pCur->uc.pCursor); goto open_cursor_set_hints; } /* If the cursor is not currently open or is open on a different ** index, then fall through into OP_OpenRead to force a reopen */ -case OP_OpenRead: +case OP_OpenRead: /* ncycle */ case OP_OpenWrite: assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ ); @@ -85372,14 +96054,14 @@ case OP_OpenWrite: assert( pOp->opcode==OP_OpenRead || pOp->opcode==OP_ReopenIdx || p->readOnly==0 ); - if( p->expired ){ + if( p->expired==1 ){ rc = SQLITE_ABORT_ROLLBACK; goto abort_due_to_error; } nField = 0; pKeyInfo = 0; - p2 = pOp->p2; + p2 = (u32)pOp->p2; iDb = pOp->p3; assert( iDb>=0 && iDbnDb ); assert( DbMaskTest(p->btreeMask, iDb) ); @@ -85398,7 +96080,8 @@ case OP_OpenWrite: } if( pOp->p5 & OPFLAG_P2ISREG ){ assert( p2>0 ); - assert( p2<=(p->nMem+1 - p->nCursor) ); + assert( p2<=(u32)(p->nMem+1 - p->nCursor) ); + assert( pOp->opcode==OP_OpenWrite ); pIn2 = &aMem[p2]; assert( memIsValid(pIn2) ); assert( (pIn2->flags & MEM_Int)!=0 ); @@ -85421,8 +96104,9 @@ case OP_OpenWrite: assert( pOp->p1>=0 ); assert( nField>=0 ); testcase( nField==0 ); /* Table with INTEGER PRIMARY KEY and nothing else */ - pCur = allocateCursor(p, pOp->p1, nField, iDb, CURTYPE_BTREE); + pCur = allocateCursor(p, pOp->p1, nField, CURTYPE_BTREE); if( pCur==0 ) goto no_mem; + pCur->iDb = iDb; pCur->nullRow = 1; pCur->isOrdered = 1; pCur->pgnoRoot = p2; @@ -85434,16 +96118,14 @@ case OP_OpenWrite: /* Set the VdbeCursor.isTable variable. Previous versions of ** SQLite used to check if the root-page flags were sane at this point ** and report database corruption if they were not, but this check has - ** since moved into the btree layer. */ + ** since moved into the btree layer. */ pCur->isTable = pOp->p4type!=P4_KEYINFO; open_cursor_set_hints: assert( OPFLAG_BULKCSR==BTREE_BULKLOAD ); assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ ); testcase( pOp->p5 & OPFLAG_BULKCSR ); -#ifdef SQLITE_ENABLE_CURSOR_HINTS testcase( pOp->p2 & OPFLAG_SEEKEQ ); -#endif sqlite3BtreeCursorHintFlags(pCur->uc.pCursor, (pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ))); if( rc ) goto abort_due_to_error; @@ -85458,20 +96140,26 @@ open_cursor_set_hints: ** ** Duplicate ephemeral cursors are used for self-joins of materialized views. */ -case OP_OpenDup: { +case OP_OpenDup: { /* ncycle */ VdbeCursor *pOrig; /* The original cursor to be duplicated */ VdbeCursor *pCx; /* The new cursor */ pOrig = p->apCsr[pOp->p2]; - assert( pOrig->pBtx!=0 ); /* Only ephemeral cursors can be duplicated */ + assert( pOrig ); + assert( pOrig->isEphemeral ); /* Only ephemeral cursors can be duplicated */ - pCx = allocateCursor(p, pOp->p1, pOrig->nField, -1, CURTYPE_BTREE); + pCx = allocateCursor(p, pOp->p1, pOrig->nField, CURTYPE_BTREE); if( pCx==0 ) goto no_mem; pCx->nullRow = 1; pCx->isEphemeral = 1; pCx->pKeyInfo = pOrig->pKeyInfo; pCx->isTable = pOrig->isTable; - rc = sqlite3BtreeCursor(pOrig->pBtx, MASTER_ROOT, BTREE_WRCSR, + pCx->pgnoRoot = pOrig->pgnoRoot; + pCx->isOrdered = pOrig->isOrdered; + pCx->ub.pBtx = pOrig->ub.pBtx; + pCx->noReuse = 1; + pOrig->noReuse = 1; + rc = sqlite3BtreeCursor(pCx->ub.pBtx, pCx->pgnoRoot, BTREE_WRCSR, pCx->pKeyInfo, pCx->uc.pCursor); /* The sqlite3BtreeCursor() routine can only fail for the first cursor ** opened for a database. Since there is already an open cursor when this @@ -85481,14 +96169,17 @@ case OP_OpenDup: { } -/* Opcode: OpenEphemeral P1 P2 * P4 P5 +/* Opcode: OpenEphemeral P1 P2 P3 P4 P5 ** Synopsis: nColumn=P2 ** ** Open a new cursor P1 to a transient table. -** The cursor is always opened read/write even if +** The cursor is always opened read/write even if ** the main database is read-only. The ephemeral ** table is deleted automatically when the cursor is closed. ** +** If the cursor P1 is already opened on an ephemeral table, the table +** is cleared (all content is erased). +** ** P2 is the number of columns in the ephemeral table. ** The cursor points to a BTree table if P4==0 and to a BTree index ** if P4 is not 0. If P4 is not NULL, it points to a KeyInfo structure @@ -85498,6 +96189,10 @@ case OP_OpenDup: { ** in btree.h. These flags control aspects of the operation of ** the btree. The BTREE_OMIT_JOURNAL and BTREE_SINGLE flags are ** added automatically. +** +** If P3 is positive, then reg[P3] is modified slightly so that it +** can be used as zero-length data for OP_Insert. This is an optimization +** that avoids an extra OP_Blob opcode to initialize that register. */ /* Opcode: OpenAutoindex P1 P2 * P4 * ** Synopsis: nColumn=P2 @@ -85507,12 +96202,12 @@ case OP_OpenDup: { ** by this opcode will be used for automatically created transient ** indices in joins. */ -case OP_OpenAutoindex: -case OP_OpenEphemeral: { +case OP_OpenAutoindex: /* ncycle */ +case OP_OpenEphemeral: { /* ncycle */ VdbeCursor *pCx; KeyInfo *pKeyInfo; - static const int vfsFlags = + static const int vfsFlags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE | @@ -85520,41 +96215,66 @@ case OP_OpenEphemeral: { SQLITE_OPEN_TRANSIENT_DB; assert( pOp->p1>=0 ); assert( pOp->p2>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_BTREE); - if( pCx==0 ) goto no_mem; - pCx->nullRow = 1; - pCx->isEphemeral = 1; - rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->pBtx, - BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5, vfsFlags); - if( rc==SQLITE_OK ){ - rc = sqlite3BtreeBeginTrans(pCx->pBtx, 1); + if( pOp->p3>0 ){ + /* Make register reg[P3] into a value that can be used as the data + ** form sqlite3BtreeInsert() where the length of the data is zero. */ + assert( pOp->p2==0 ); /* Only used when number of columns is zero */ + assert( pOp->opcode==OP_OpenEphemeral ); + assert( aMem[pOp->p3].flags & MEM_Null ); + aMem[pOp->p3].n = 0; + aMem[pOp->p3].z = ""; } - if( rc==SQLITE_OK ){ - /* If a transient index is required, create it by calling - ** sqlite3BtreeCreateTable() with the BTREE_BLOBKEY flag before - ** opening it. If a transient table is required, just use the - ** automatically created table with root-page 1 (an BLOB_INTKEY table). - */ - if( (pCx->pKeyInfo = pKeyInfo = pOp->p4.pKeyInfo)!=0 ){ - int pgno; - assert( pOp->p4type==P4_KEYINFO ); - rc = sqlite3BtreeCreateTable(pCx->pBtx, &pgno, BTREE_BLOBKEY | pOp->p5); + pCx = p->apCsr[pOp->p1]; + if( pCx && !pCx->noReuse && ALWAYS(pOp->p2<=pCx->nField) ){ + /* If the ephemeral table is already open and has no duplicates from + ** OP_OpenDup, then erase all existing content so that the table is + ** empty again, rather than creating a new table. */ + assert( pCx->isEphemeral ); + pCx->seqCount = 0; + pCx->cacheStatus = CACHE_STALE; + rc = sqlite3BtreeClearTable(pCx->ub.pBtx, pCx->pgnoRoot, 0); + }else{ + pCx = allocateCursor(p, pOp->p1, pOp->p2, CURTYPE_BTREE); + if( pCx==0 ) goto no_mem; + pCx->isEphemeral = 1; + rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->ub.pBtx, + BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5, + vfsFlags); + if( rc==SQLITE_OK ){ + rc = sqlite3BtreeBeginTrans(pCx->ub.pBtx, 1, 0); if( rc==SQLITE_OK ){ - assert( pgno==MASTER_ROOT+1 ); - assert( pKeyInfo->db==db ); - assert( pKeyInfo->enc==ENC(db) ); - rc = sqlite3BtreeCursor(pCx->pBtx, pgno, BTREE_WRCSR, - pKeyInfo, pCx->uc.pCursor); + /* If a transient index is required, create it by calling + ** sqlite3BtreeCreateTable() with the BTREE_BLOBKEY flag before + ** opening it. If a transient table is required, just use the + ** automatically created table with root-page 1 (an BLOB_INTKEY table). + */ + if( (pCx->pKeyInfo = pKeyInfo = pOp->p4.pKeyInfo)!=0 ){ + assert( pOp->p4type==P4_KEYINFO ); + rc = sqlite3BtreeCreateTable(pCx->ub.pBtx, &pCx->pgnoRoot, + BTREE_BLOBKEY | pOp->p5); + if( rc==SQLITE_OK ){ + assert( pCx->pgnoRoot==SCHEMA_ROOT+1 ); + assert( pKeyInfo->db==db ); + assert( pKeyInfo->enc==ENC(db) ); + rc = sqlite3BtreeCursor(pCx->ub.pBtx, pCx->pgnoRoot, BTREE_WRCSR, + pKeyInfo, pCx->uc.pCursor); + } + pCx->isTable = 0; + }else{ + pCx->pgnoRoot = SCHEMA_ROOT; + rc = sqlite3BtreeCursor(pCx->ub.pBtx, SCHEMA_ROOT, BTREE_WRCSR, + 0, pCx->uc.pCursor); + pCx->isTable = 1; + } + } + pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED); + if( rc ){ + sqlite3BtreeClose(pCx->ub.pBtx); } - pCx->isTable = 0; - }else{ - rc = sqlite3BtreeCursor(pCx->pBtx, MASTER_ROOT, BTREE_WRCSR, - 0, pCx->uc.pCursor); - pCx->isTable = 1; } } if( rc ) goto abort_due_to_error; - pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED); + pCx->nullRow = 1; break; } @@ -85573,7 +96293,7 @@ case OP_SorterOpen: { assert( pOp->p1>=0 ); assert( pOp->p2>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_SORTER); + pCx = allocateCursor(p, pOp->p1, pOp->p2, CURTYPE_SORTER); if( pCx==0 ) goto no_mem; pCx->pKeyInfo = pOp->p4.pKeyInfo; assert( pCx->pKeyInfo->db==db ); @@ -85606,7 +96326,7 @@ case OP_SequenceTest: { ** ** Open a new cursor that points to a fake table that contains a single ** row of data. The content of that one row is the content of memory -** register P2. In other words, cursor P1 becomes an alias for the +** register P2. In other words, cursor P1 becomes an alias for the ** MEM_Blob content contained in register P2. ** ** A pseudo-table created by this opcode is used to hold a single @@ -85622,7 +96342,7 @@ case OP_OpenPseudo: { assert( pOp->p1>=0 ); assert( pOp->p3>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, CURTYPE_PSEUDO); + pCx = allocateCursor(p, pOp->p1, pOp->p3, CURTYPE_PSEUDO); if( pCx==0 ) goto no_mem; pCx->nullRow = 1; pCx->seekResult = pOp->p2; @@ -85641,7 +96361,7 @@ case OP_OpenPseudo: { ** Close a cursor previously opened as P1. If P1 is not ** currently open, this instruction is a no-op. */ -case OP_Close: { +case OP_Close: { /* ncycle */ assert( pOp->p1>=0 && pOp->p1nCursor ); sqlite3VdbeFreeCursor(p, p->apCsr[pOp->p1]); p->apCsr[pOp->p1] = 0; @@ -85671,21 +96391,23 @@ case OP_ColumnsUsed: { /* Opcode: SeekGE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), -** use the value in register P3 as the key. If cursor P1 refers -** to an SQL index, then P3 is the first in an array of P4 registers -** that are used as an unpacked index key. +** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), +** use the value in register P3 as the key. If cursor P1 refers +** to an SQL index, then P3 is the first in an array of P4 registers +** that are used as an unpacked index key. ** -** Reposition cursor P1 so that it points to the smallest entry that -** is greater than or equal to the key value. If there are no records +** Reposition cursor P1 so that it points to the smallest entry that +** is greater than or equal to the key value. If there are no records ** greater than or equal to the key and P2 is not zero, then jump to P2. ** ** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this -** opcode will always land on a record that equally equals the key, or -** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this -** opcode must be followed by an IdxLE opcode with the same arguments. -** The IdxLE opcode will be skipped if this opcode succeeds, but the -** IdxLE opcode will be used on subsequent loop iterations. +** opcode will either land on a record that exactly matches the key, or +** else it will cause a jump to P2. When the cursor is OPFLAG_SEEKEQ, +** this opcode must be followed by an IdxLE opcode with the same arguments. +** The IdxGT opcode will be skipped if this opcode succeeds, but the +** IdxGT opcode will be used on subsequent loop iterations. The +** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this +** is an equality search. ** ** This opcode leaves the cursor configured to move in forward order, ** from the beginning toward the end. In other words, the cursor is @@ -85696,13 +96418,13 @@ case OP_ColumnsUsed: { /* Opcode: SeekGT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), -** use the value in register P3 as a key. If cursor P1 refers -** to an SQL index, then P3 is the first in an array of P4 registers -** that are used as an unpacked index key. +** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), +** use the value in register P3 as a key. If cursor P1 refers +** to an SQL index, then P3 is the first in an array of P4 registers +** that are used as an unpacked index key. ** -** Reposition cursor P1 so that it points to the smallest entry that -** is greater than the key value. If there are no records greater than +** Reposition cursor P1 so that it points to the smallest entry that +** is greater than the key value. If there are no records greater than ** the key and P2 is not zero, then jump to P2. ** ** This opcode leaves the cursor configured to move in forward order, @@ -85711,16 +96433,16 @@ case OP_ColumnsUsed: { ** ** See also: Found, NotFound, SeekLt, SeekGe, SeekLe */ -/* Opcode: SeekLT P1 P2 P3 P4 * +/* Opcode: SeekLT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), -** use the value in register P3 as a key. If cursor P1 refers -** to an SQL index, then P3 is the first in an array of P4 registers -** that are used as an unpacked index key. +** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), +** use the value in register P3 as a key. If cursor P1 refers +** to an SQL index, then P3 is the first in an array of P4 registers +** that are used as an unpacked index key. ** -** Reposition cursor P1 so that it points to the largest entry that -** is less than the key value. If there are no records less than +** Reposition cursor P1 so that it points to the largest entry that +** is less than the key value. If there are no records less than ** the key and P2 is not zero, then jump to P2. ** ** This opcode leaves the cursor configured to move in reverse order, @@ -85732,13 +96454,13 @@ case OP_ColumnsUsed: { /* Opcode: SeekLE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), -** use the value in register P3 as a key. If cursor P1 refers -** to an SQL index, then P3 is the first in an array of P4 registers -** that are used as an unpacked index key. +** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), +** use the value in register P3 as a key. If cursor P1 refers +** to an SQL index, then P3 is the first in an array of P4 registers +** that are used as an unpacked index key. ** -** Reposition cursor P1 so that it points to the largest entry that -** is less than or equal to the key value. If there are no records +** Reposition cursor P1 so that it points to the largest entry that +** is less than or equal to the key value. If there are no records ** less than or equal to the key and P2 is not zero, then jump to P2. ** ** This opcode leaves the cursor configured to move in reverse order, @@ -85746,18 +96468,20 @@ case OP_ColumnsUsed: { ** configured to use Prev, not Next. ** ** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this -** opcode will always land on a record that equally equals the key, or -** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this -** opcode must be followed by an IdxGE opcode with the same arguments. +** opcode will either land on a record that exactly matches the key, or +** else it will cause a jump to P2. When the cursor is OPFLAG_SEEKEQ, +** this opcode must be followed by an IdxLE opcode with the same arguments. ** The IdxGE opcode will be skipped if this opcode succeeds, but the -** IdxGE opcode will be used on subsequent loop iterations. +** IdxGE opcode will be used on subsequent loop iterations. The +** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this +** is an equality search. ** ** See also: Found, NotFound, SeekGt, SeekGe, SeekLt */ -case OP_SeekLT: /* jump, in3 */ -case OP_SeekLE: /* jump, in3 */ -case OP_SeekGE: /* jump, in3 */ -case OP_SeekGT: { /* jump, in3 */ +case OP_SeekLT: /* jump, in3, group, ncycle */ +case OP_SeekLE: /* jump, in3, group, ncycle */ +case OP_SeekGE: /* jump, in3, group, ncycle */ +case OP_SeekGT: { /* jump, in3, group, ncycle */ int res; /* Comparison result */ int oc; /* Opcode */ VdbeCursor *pC; /* The cursor to seek */ @@ -85783,8 +96507,11 @@ case OP_SeekGT: { /* jump, in3 */ pC->seekOp = pOp->opcode; #endif + pC->deferredMoveto = 0; + pC->cacheStatus = CACHE_STALE; if( pC->isTable ){ - /* The BTREE_SEEK_EQ flag is only set on index cursors */ + u16 flags3, newType; + /* The OPFLAG_SEEKEQ/BTREE_SEEK_EQ flag is only set on index cursors */ assert( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ)==0 || CORRUPT_DB ); @@ -85792,20 +96519,29 @@ case OP_SeekGT: { /* jump, in3 */ ** blob, or NULL. But it needs to be an integer before we can do ** the seek, so convert it. */ pIn3 = &aMem[pOp->p3]; - if( (pIn3->flags & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + flags3 = pIn3->flags; + if( (flags3 & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Str))==MEM_Str ){ applyNumericAffinity(pIn3, 0); } - iKey = sqlite3VdbeIntValue(pIn3); + iKey = sqlite3VdbeIntValue(pIn3); /* Get the integer key value */ + newType = pIn3->flags; /* Record the type after applying numeric affinity */ + pIn3->flags = flags3; /* But convert the type back to its original */ /* If the P3 value could not be converted into an integer without ** loss of information, then special processing is required... */ - if( (pIn3->flags & MEM_Int)==0 ){ - if( (pIn3->flags & MEM_Real)==0 ){ - /* If the P3 value cannot be converted into any kind of a number, - ** then the seek is not possible, so jump to P2 */ - VdbeBranchTaken(1,2); goto jump_to_p2; - break; + if( (newType & (MEM_Int|MEM_IntReal))==0 ){ + int c; + if( (newType & MEM_Real)==0 ){ + if( (newType & MEM_Null) || oc>=OP_SeekGE ){ + VdbeBranchTaken(1,2); + goto jump_to_p2; + }else{ + rc = sqlite3BtreeLast(pC->uc.pCursor, &res); + if( rc!=SQLITE_OK ) goto abort_due_to_error; + goto seek_not_found; + } } + c = sqlite3IntFloatCompare(iKey, pIn3->u.r); /* If the approximation iKey is larger than the actual real search ** term, substitute >= for > and < for <=. e.g. if the search term @@ -85814,7 +96550,7 @@ case OP_SeekGT: { /* jump, in3 */ ** (x > 4.9) -> (x >= 5) ** (x <= 4.9) -> (x < 5) */ - if( pIn3->u.r<(double)iKey ){ + if( c>0 ){ assert( OP_SeekGE==(OP_SeekGT-1) ); assert( OP_SeekLT==(OP_SeekLE-1) ); assert( (OP_SeekLE & 0x0001)==(OP_SeekGT & 0x0001) ); @@ -85823,27 +96559,30 @@ case OP_SeekGT: { /* jump, in3 */ /* If the approximation iKey is smaller than the actual real search ** term, substitute <= for < and > for >=. */ - else if( pIn3->u.r>(double)iKey ){ + else if( c<0 ){ assert( OP_SeekLE==(OP_SeekLT+1) ); assert( OP_SeekGT==(OP_SeekGE+1) ); assert( (OP_SeekLT & 0x0001)==(OP_SeekGE & 0x0001) ); if( (oc & 0x0001)==(OP_SeekLT & 0x0001) ) oc++; } - } - rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, 0, (u64)iKey, 0, &res); + } + rc = sqlite3BtreeTableMoveto(pC->uc.pCursor, (u64)iKey, 0, &res); pC->movetoTarget = iKey; /* Used by OP_Delete */ if( rc!=SQLITE_OK ){ goto abort_due_to_error; } }else{ - /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and - ** OP_SeekLE opcodes are allowed, and these must be immediately followed - ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key. + /* For a cursor with the OPFLAG_SEEKEQ/BTREE_SEEK_EQ hint, only the + ** OP_SeekGE and OP_SeekLE opcodes are allowed, and these must be + ** immediately followed by an OP_IdxGT or OP_IdxLT opcode, respectively, + ** with the same key. */ if( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ) ){ eqOnly = 1; assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE ); assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT ); + assert( pOp->opcode==OP_SeekGE || pOp[1].opcode==OP_IdxLT ); + assert( pOp->opcode==OP_SeekLE || pOp[1].opcode==OP_IdxGT ); assert( pOp[1].p1==pOp[0].p1 ); assert( pOp[1].p2==pOp[0].p2 ); assert( pOp[1].p3==pOp[0].p3 ); @@ -85871,10 +96610,16 @@ case OP_SeekGT: { /* jump, in3 */ r.aMem = &aMem[pOp->p3]; #ifdef SQLITE_DEBUG - { int i; for(i=0; i0 ) REGISTER_TRACE(pOp->p3+i, &r.aMem[i]); + } + } #endif r.eqSeen = 0; - rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, &r, 0, 0, &res); + rc = sqlite3BtreeIndexMoveto(pC->uc.pCursor, &r, &res); if( rc!=SQLITE_OK ){ goto abort_due_to_error; } @@ -85883,8 +96628,6 @@ case OP_SeekGT: { /* jump, in3 */ goto seek_not_found; } } - pC->deferredMoveto = 0; - pC->cacheStatus = CACHE_STALE; #ifdef SQLITE_TEST sqlite3_search_count++; #endif @@ -85935,6 +96678,240 @@ seek_not_found: break; } + +/* Opcode: SeekScan P1 P2 * * P5 +** Synopsis: Scan-ahead up to P1 rows +** +** This opcode is a prefix opcode to OP_SeekGE. In other words, this +** opcode must be immediately followed by OP_SeekGE. This constraint is +** checked by assert() statements. +** +** This opcode uses the P1 through P4 operands of the subsequent +** OP_SeekGE. In the text that follows, the operands of the subsequent +** OP_SeekGE opcode are denoted as SeekOP.P1 through SeekOP.P4. Only +** the P1, P2 and P5 operands of this opcode are also used, and are called +** This.P1, This.P2 and This.P5. +** +** This opcode helps to optimize IN operators on a multi-column index +** where the IN operator is on the later terms of the index by avoiding +** unnecessary seeks on the btree, substituting steps to the next row +** of the b-tree instead. A correct answer is obtained if this opcode +** is omitted or is a no-op. +** +** The SeekGE.P3 and SeekGE.P4 operands identify an unpacked key which +** is the desired entry that we want the cursor SeekGE.P1 to be pointing +** to. Call this SeekGE.P3/P4 row the "target". +** +** If the SeekGE.P1 cursor is not currently pointing to a valid row, +** then this opcode is a no-op and control passes through into the OP_SeekGE. +** +** If the SeekGE.P1 cursor is pointing to a valid row, then that row +** might be the target row, or it might be near and slightly before the +** target row, or it might be after the target row. If the cursor is +** currently before the target row, then this opcode attempts to position +** the cursor on or after the target row by invoking sqlite3BtreeStep() +** on the cursor between 1 and This.P1 times. +** +** The This.P5 parameter is a flag that indicates what to do if the +** cursor ends up pointing at a valid row that is past the target +** row. If This.P5 is false (0) then a jump is made to SeekGE.P2. If +** This.P5 is true (non-zero) then a jump is made to This.P2. The P5==0 +** case occurs when there are no inequality constraints to the right of +** the IN constraint. The jump to SeekGE.P2 ends the loop. The P5!=0 case +** occurs when there are inequality constraints to the right of the IN +** operator. In that case, the This.P2 will point either directly to or +** to setup code prior to the OP_IdxGT or OP_IdxGE opcode that checks for +** loop terminate. +** +** Possible outcomes from this opcode:
                  +** +**
                1. If the cursor is initially not pointed to any valid row, then +** fall through into the subsequent OP_SeekGE opcode. +** +**
                2. If the cursor is left pointing to a row that is before the target +** row, even after making as many as This.P1 calls to +** sqlite3BtreeNext(), then also fall through into OP_SeekGE. +** +**
                3. If the cursor is left pointing at the target row, either because it +** was at the target row to begin with or because one or more +** sqlite3BtreeNext() calls moved the cursor to the target row, +** then jump to This.P2.., +** +**
                4. If the cursor started out before the target row and a call to +** to sqlite3BtreeNext() moved the cursor off the end of the index +** (indicating that the target row definitely does not exist in the +** btree) then jump to SeekGE.P2, ending the loop. +** +**
                5. If the cursor ends up on a valid row that is past the target row +** (indicating that the target row does not exist in the btree) then +** jump to SeekOP.P2 if This.P5==0 or to This.P2 if This.P5>0. +**
                +*/ +case OP_SeekScan: { /* ncycle */ + VdbeCursor *pC; + int res; + int nStep; + UnpackedRecord r; + + assert( pOp[1].opcode==OP_SeekGE ); + + /* If pOp->p5 is clear, then pOp->p2 points to the first instruction past the + ** OP_IdxGT that follows the OP_SeekGE. Otherwise, it points to the first + ** opcode past the OP_SeekGE itself. */ + assert( pOp->p2>=(int)(pOp-aOp)+2 ); +#ifdef SQLITE_DEBUG + if( pOp->p5==0 ){ + /* There are no inequality constraints following the IN constraint. */ + assert( pOp[1].p1==aOp[pOp->p2-1].p1 ); + assert( pOp[1].p2==aOp[pOp->p2-1].p2 ); + assert( pOp[1].p3==aOp[pOp->p2-1].p3 ); + assert( aOp[pOp->p2-1].opcode==OP_IdxGT + || aOp[pOp->p2-1].opcode==OP_IdxGE ); + testcase( aOp[pOp->p2-1].opcode==OP_IdxGE ); + }else{ + /* There are inequality constraints. */ + assert( pOp->p2==(int)(pOp-aOp)+2 ); + assert( aOp[pOp->p2-1].opcode==OP_SeekGE ); + } +#endif + + assert( pOp->p1>0 ); + pC = p->apCsr[pOp[1].p1]; + assert( pC!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( !pC->isTable ); + if( !sqlite3BtreeCursorIsValidNN(pC->uc.pCursor) ){ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("... cursor not valid - fall through\n"); + } +#endif + break; + } + nStep = pOp->p1; + assert( nStep>=1 ); + r.pKeyInfo = pC->pKeyInfo; + r.nField = (u16)pOp[1].p4.i; + r.default_rc = 0; + r.aMem = &aMem[pOp[1].p3]; +#ifdef SQLITE_DEBUG + { + int i; + for(i=0; i0 && pOp->p5==0 ){ + seekscan_search_fail: + /* Jump to SeekGE.P2, ending the loop */ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("... %d steps and then skip\n", pOp->p1 - nStep); + } +#endif + VdbeBranchTaken(1,3); + pOp++; + goto jump_to_p2; + } + if( res>=0 ){ + /* Jump to This.P2, bypassing the OP_SeekGE opcode */ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("... %d steps and then success\n", pOp->p1 - nStep); + } +#endif + VdbeBranchTaken(2,3); + goto jump_to_p2; + break; + } + if( nStep<=0 ){ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("... fall through after %d steps\n", pOp->p1); + } +#endif + VdbeBranchTaken(0,3); + break; + } + nStep--; + pC->cacheStatus = CACHE_STALE; + rc = sqlite3BtreeNext(pC->uc.pCursor, 0); + if( rc ){ + if( rc==SQLITE_DONE ){ + rc = SQLITE_OK; + goto seekscan_search_fail; + }else{ + goto abort_due_to_error; + } + } + } + + break; +} + + +/* Opcode: SeekHit P1 P2 P3 * * +** Synopsis: set P2<=seekHit<=P3 +** +** Increase or decrease the seekHit value for cursor P1, if necessary, +** so that it is no less than P2 and no greater than P3. +** +** The seekHit integer represents the maximum of terms in an index for which +** there is known to be at least one match. If the seekHit value is smaller +** than the total number of equality terms in an index lookup, then the +** OP_IfNoHope opcode might run to see if the IN loop can be abandoned +** early, thus saving work. This is part of the IN-early-out optimization. +** +** P1 must be a valid b-tree cursor. +*/ +case OP_SeekHit: { /* ncycle */ + VdbeCursor *pC; + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + assert( pOp->p3>=pOp->p2 ); + if( pC->seekHitp2 ){ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("seekHit changes from %d to %d\n", pC->seekHit, pOp->p2); + } +#endif + pC->seekHit = pOp->p2; + }else if( pC->seekHit>pOp->p3 ){ +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("seekHit changes from %d to %d\n", pC->seekHit, pOp->p3); + } +#endif + pC->seekHit = pOp->p3; + } + break; +} + +/* Opcode: IfNotOpen P1 P2 * * * +** Synopsis: if( !csr[P1] ) goto P2 +** +** If cursor P1 is not open or if P1 is set to a NULL row using the +** OP_NullRow opcode, then jump to instruction P2. Otherwise, fall through. +*/ +case OP_IfNotOpen: { /* jump */ + VdbeCursor *pCur; + + assert( pOp->p1>=0 && pOp->p1nCursor ); + pCur = p->apCsr[pOp->p1]; + VdbeBranchTaken(pCur==0 || pCur->nullRow, 2); + if( pCur==0 || pCur->nullRow ){ + goto jump_to_p2_and_check_for_interrupt; + } + break; +} + /* Opcode: Found P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** @@ -85958,9 +96935,9 @@ seek_not_found: ** If P4==0 then register P3 holds a blob constructed by MakeRecord. If ** P4>0 then register P3 is the first of P4 registers that form an unpacked ** record. -** +** ** Cursor P1 is on an index btree. If the record identified by P3 and P4 -** is not the prefix of any entry in P1 then a jump is made to P2. If P1 +** is not the prefix of any entry in P1 then a jump is made to P2. If P1 ** does contain an entry whose prefix matches the P3/P4 record then control ** falls through to the next instruction and P1 is left pointing at the ** matching entry. @@ -85969,7 +96946,38 @@ seek_not_found: ** advanced in either direction. In other words, the Next and Prev ** opcodes do not work after this operation. ** -** See also: Found, NotExists, NoConflict +** See also: Found, NotExists, NoConflict, IfNoHope +*/ +/* Opcode: IfNoHope P1 P2 P3 P4 * +** Synopsis: key=r[P3@P4] +** +** Register P3 is the first of P4 registers that form an unpacked +** record. Cursor P1 is an index btree. P2 is a jump destination. +** In other words, the operands to this opcode are the same as the +** operands to OP_NotFound and OP_IdxGT. +** +** This opcode is an optimization attempt only. If this opcode always +** falls through, the correct answer is still obtained, but extra work +** is performed. +** +** A value of N in the seekHit flag of cursor P1 means that there exists +** a key P3:N that will match some record in the index. We want to know +** if it is possible for a record P3:P4 to match some record in the +** index. If it is not possible, we can skip some work. So if seekHit +** is less than P4, attempt to find out if a match is possible by running +** OP_NotFound. +** +** This opcode is used in IN clause processing for a multi-column key. +** If an IN clause is attached to an element of the key other than the +** left-most element, and if there are no matches on the most recent +** seek over the whole key, then it might be that one of the key element +** to the left is prohibiting a match, and hence there is "no hope" of +** any match regardless of how many IN clause elements are checked. +** In such a case, we abandon the IN clause search early, using this +** opcode. The opcode name comes from the fact that the +** jump is taken if there is "no hope" of achieving a match. +** +** See also: NotFound, SeekHit */ /* Opcode: NoConflict P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] @@ -85977,7 +96985,7 @@ seek_not_found: ** If P4==0 then register P3 holds a blob constructed by MakeRecord. If ** P4>0 then register P3 is the first of P4 registers that form an unpacked ** record. -** +** ** Cursor P1 is on an index btree. If the record identified by P3 and P4 ** contains any NULL value, jump immediately to P2. If all terms of the ** record are not-NULL then a check is done to determine if any row in the @@ -85994,15 +97002,26 @@ seek_not_found: ** ** See also: NotFound, Found, NotExists */ -case OP_NoConflict: /* jump, in3 */ -case OP_NotFound: /* jump, in3 */ -case OP_Found: { /* jump, in3 */ +case OP_IfNoHope: { /* jump, in3, ncycle */ + VdbeCursor *pC; + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + printf("seekHit is %d\n", pC->seekHit); + } +#endif + if( pC->seekHit>=pOp->p4.i ) break; + /* Fall through into OP_NotFound */ + /* no break */ deliberate_fall_through +} +case OP_NoConflict: /* jump, in3, ncycle */ +case OP_NotFound: /* jump, in3, ncycle */ +case OP_Found: { /* jump, in3, ncycle */ int alreadyExists; - int takeJump; int ii; VdbeCursor *pC; - int res; - UnpackedRecord *pFree; UnpackedRecord *pIdxKey; UnpackedRecord r; @@ -86017,14 +97036,15 @@ case OP_Found: { /* jump, in3 */ #ifdef SQLITE_DEBUG pC->seekOp = pOp->opcode; #endif - pIn3 = &aMem[pOp->p3]; + r.aMem = &aMem[pOp->p3]; assert( pC->eCurType==CURTYPE_BTREE ); assert( pC->uc.pCursor!=0 ); assert( pC->isTable==0 ); - if( pOp->p4.i>0 ){ + r.nField = (u16)pOp->p4.i; + if( r.nField>0 ){ + /* Key values in an array of registers */ r.pKeyInfo = pC->pKeyInfo; - r.nField = (u16)pOp->p4.i; - r.aMem = pIn3; + r.default_rc = 0; #ifdef SQLITE_DEBUG for(ii=0; iip3+ii, &r.aMem[ii]); } #endif - pIdxKey = &r; - pFree = 0; + rc = sqlite3BtreeIndexMoveto(pC->uc.pCursor, &r, &pC->seekResult); }else{ - assert( pIn3->flags & MEM_Blob ); - rc = ExpandBlob(pIn3); + /* Composite key generated by OP_MakeRecord */ + assert( r.aMem->flags & MEM_Blob ); + assert( pOp->opcode!=OP_NoConflict ); + rc = ExpandBlob(r.aMem); assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); if( rc ) goto no_mem; - pFree = pIdxKey = sqlite3VdbeAllocUnpackedRecord(pC->pKeyInfo); + pIdxKey = sqlite3VdbeAllocUnpackedRecord(pC->pKeyInfo); if( pIdxKey==0 ) goto no_mem; - sqlite3VdbeRecordUnpack(pC->pKeyInfo, pIn3->n, pIn3->z, pIdxKey); + sqlite3VdbeRecordUnpack(pC->pKeyInfo, r.aMem->n, r.aMem->z, pIdxKey); + pIdxKey->default_rc = 0; + rc = sqlite3BtreeIndexMoveto(pC->uc.pCursor, pIdxKey, &pC->seekResult); + sqlite3DbFreeNN(db, pIdxKey); } - pIdxKey->default_rc = 0; - takeJump = 0; - if( pOp->opcode==OP_NoConflict ){ - /* For the OP_NoConflict opcode, take the jump if any of the - ** input fields are NULL, since any key with a NULL will not - ** conflict */ - for(ii=0; iinField; ii++){ - if( pIdxKey->aMem[ii].flags & MEM_Null ){ - takeJump = 1; - break; - } - } - } - rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, pIdxKey, 0, 0, &res); - if( pFree ) sqlite3DbFreeNN(db, pFree); if( rc!=SQLITE_OK ){ goto abort_due_to_error; } - pC->seekResult = res; - alreadyExists = (res==0); + alreadyExists = (pC->seekResult==0); pC->nullRow = 1-alreadyExists; pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; @@ -86070,8 +97078,25 @@ case OP_Found: { /* jump, in3 */ VdbeBranchTaken(alreadyExists!=0,2); if( alreadyExists ) goto jump_to_p2; }else{ - VdbeBranchTaken(takeJump||alreadyExists==0,2); - if( takeJump || !alreadyExists ) goto jump_to_p2; + if( !alreadyExists ){ + VdbeBranchTaken(1,2); + goto jump_to_p2; + } + if( pOp->opcode==OP_NoConflict ){ + /* For the OP_NoConflict opcode, take the jump if any of the + ** input fields are NULL, since any key with a NULL will not + ** conflict */ + for(ii=0; iiopcode==OP_IfNoHope ){ + pC->seekHit = pOp->p4.i; + } } break; } @@ -86081,9 +97106,9 @@ case OP_Found: { /* jump, in3 */ ** ** P1 is the index of a cursor open on an SQL table btree (with integer ** keys). If register P3 does not contain an integer or if P1 does not -** contain a record with rowid P3 then jump immediately to P2. +** contain a record with rowid P3 then jump immediately to P2. ** Or, if P2 is 0, raise an SQLITE_CORRUPT error. If P1 does contain -** a record with rowid P3 then +** a record with rowid P3 then ** leave the cursor pointing at that record and fall through to the next ** instruction. ** @@ -86106,7 +97131,7 @@ case OP_Found: { /* jump, in3 */ ** P1 is the index of a cursor open on an SQL table btree (with integer ** keys). P3 is an integer rowid. If P1 does not contain a record with ** rowid P3 then jump immediately to P2. Or, if P2 is 0, raise an -** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then +** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then ** leave the cursor pointing at that record and fall through to the next ** instruction. ** @@ -86123,34 +97148,48 @@ case OP_Found: { /* jump, in3 */ ** ** See also: Found, NotFound, NoConflict, SeekRowid */ -case OP_SeekRowid: { /* jump, in3 */ +case OP_SeekRowid: { /* jump, in3, ncycle */ VdbeCursor *pC; BtCursor *pCrsr; int res; u64 iKey; pIn3 = &aMem[pOp->p3]; - if( (pIn3->flags & MEM_Int)==0 ){ - applyAffinity(pIn3, SQLITE_AFF_NUMERIC, encoding); - if( (pIn3->flags & MEM_Int)==0 ) goto jump_to_p2; + testcase( pIn3->flags & MEM_Int ); + testcase( pIn3->flags & MEM_IntReal ); + testcase( pIn3->flags & MEM_Real ); + testcase( (pIn3->flags & (MEM_Str|MEM_Int))==MEM_Str ); + if( (pIn3->flags & (MEM_Int|MEM_IntReal))==0 ){ + /* If pIn3->u.i does not contain an integer, compute iKey as the + ** integer value of pIn3. Jump to P2 if pIn3 cannot be converted + ** into an integer without loss of information. Take care to avoid + ** changing the datatype of pIn3, however, as it is used by other + ** parts of the prepared statement. */ + Mem x = pIn3[0]; + applyAffinity(&x, SQLITE_AFF_NUMERIC, encoding); + if( (x.flags & MEM_Int)==0 ) goto jump_to_p2; + iKey = x.u.i; + goto notExistsWithKey; } /* Fall through into OP_NotExists */ -case OP_NotExists: /* jump, in3 */ + /* no break */ deliberate_fall_through +case OP_NotExists: /* jump, in3, ncycle */ pIn3 = &aMem[pOp->p3]; - assert( pIn3->flags & MEM_Int ); + assert( (pIn3->flags & MEM_Int)!=0 || pOp->opcode==OP_SeekRowid ); assert( pOp->p1>=0 && pOp->p1nCursor ); + iKey = pIn3->u.i; +notExistsWithKey: pC = p->apCsr[pOp->p1]; assert( pC!=0 ); #ifdef SQLITE_DEBUG - pC->seekOp = 0; + if( pOp->opcode==OP_SeekRowid ) pC->seekOp = OP_SeekRowid; #endif assert( pC->isTable ); assert( pC->eCurType==CURTYPE_BTREE ); pCrsr = pC->uc.pCursor; assert( pCrsr!=0 ); res = 0; - iKey = pIn3->u.i; - rc = sqlite3BtreeMovetoUnpacked(pCrsr, 0, iKey, 0, &res); + rc = sqlite3BtreeTableMoveto(pCrsr, iKey, 0, &res); assert( rc==SQLITE_OK || res==0 ); pC->movetoTarget = iKey; /* Used by OP_Delete */ pC->nullRow = 0; @@ -86176,7 +97215,7 @@ case OP_NotExists: /* jump, in3 */ ** Find the next available sequence number for cursor P1. ** Write the sequence number into register P2. ** The sequence number on the cursor is incremented after this -** instruction. +** instruction. */ case OP_Sequence: { /* out2 */ assert( pOp->p1>=0 && pOp->p1nCursor ); @@ -86196,9 +97235,9 @@ case OP_Sequence: { /* out2 */ ** table that cursor P1 points to. The new record number is written ** written to register P2. ** -** If P3>0 then P3 is a register in the root frame of this VDBE that holds +** If P3>0 then P3 is a register in the root frame of this VDBE that holds ** the largest previously generated record number. No new record numbers are -** allowed to be less than this value. When this value reaches its maximum, +** allowed to be less than this value. When this value reaches its maximum, ** an SQLITE_FULL error is generated. The P3 register is updated with the ' ** generated record number. This P3 mechanism is used to help implement the ** AUTOINCREMENT feature. @@ -86208,8 +97247,10 @@ case OP_NewRowid: { /* out2 */ VdbeCursor *pC; /* Cursor of table to get the new rowid */ int res; /* Result of an sqlite3BtreeLast() */ int cnt; /* Counter to limit the number of searches */ +#ifndef SQLITE_OMIT_AUTOINCREMENT Mem *pMem; /* Register holding largest rowid for AUTOINCREMENT */ VdbeFrame *pFrame; /* Root frame of VDBE */ +#endif v = 0; res = 0; @@ -86305,7 +97346,7 @@ case OP_NewRowid: { /* out2 */ do{ sqlite3_randomness(sizeof(v), &v); v &= (MAX_ROWID>>1); v++; /* Ensure that v is greater than zero */ - }while( ((rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, 0, (u64)v, + }while( ((rc = sqlite3BtreeTableMoveto(pC->uc.pCursor, (u64)v, 0, &res))==SQLITE_OK) && (res==0) && (++cnt<100)); @@ -86347,8 +97388,8 @@ case OP_NewRowid: { /* out2 */ ** is part of an INSERT operation. The difference is only important to ** the update hook. ** -** Parameter P4 may point to a Table structure, or may be NULL. If it is -** not NULL, then the update-hook (sqlite3.xUpdateCallback) is invoked +** Parameter P4 may point to a Table structure, or may be NULL. If it is +** not NULL, then the update-hook (sqlite3.xUpdateCallback) is invoked ** following a successful insert. ** ** (WARNING/TODO: If P1 is a pseudo-cursor and P2 is dynamically @@ -86360,14 +97401,7 @@ case OP_NewRowid: { /* out2 */ ** This instruction only works on tables. The equivalent instruction ** for indices is OP_IdxInsert. */ -/* Opcode: InsertInt P1 P2 P3 P4 P5 -** Synopsis: intkey=P3 data=r[P2] -** -** This works exactly like OP_Insert except that the key is the -** integer value P3, not the value of the integer stored in register P3. -*/ -case OP_Insert: -case OP_InsertInt: { +case OP_Insert: { Mem *pData; /* MEM cell holding data for the record to be inserted */ Mem *pKey; /* MEM cell holding key for the record */ VdbeCursor *pC; /* Cursor to table into which insert is written */ @@ -86382,22 +97416,18 @@ case OP_InsertInt: { pC = p->apCsr[pOp->p1]; assert( pC!=0 ); assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->deferredMoveto==0 ); assert( pC->uc.pCursor!=0 ); assert( (pOp->p5 & OPFLAG_ISNOOP) || pC->isTable ); assert( pOp->p4type==P4_TABLE || pOp->p4type>=P4_STATIC ); REGISTER_TRACE(pOp->p2, pData); sqlite3VdbeIncrWriteCounter(p, pC); - if( pOp->opcode==OP_Insert ){ - pKey = &aMem[pOp->p3]; - assert( pKey->flags & MEM_Int ); - assert( memIsValid(pKey) ); - REGISTER_TRACE(pOp->p3, pKey); - x.nKey = pKey->u.i; - }else{ - assert( pOp->opcode==OP_InsertInt ); - x.nKey = pOp->p3; - } + pKey = &aMem[pOp->p3]; + assert( pKey->flags & MEM_Int ); + assert( memIsValid(pKey) ); + REGISTER_TRACE(pOp->p3, pKey); + x.nKey = pKey->u.i; if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){ assert( pC->iDb>=0 ); @@ -86406,14 +97436,14 @@ case OP_InsertInt: { assert( (pOp->p5 & OPFLAG_ISNOOP) || HasRowid(pTab) ); }else{ pTab = 0; - zDb = 0; /* Not needed. Silence a compiler warning. */ + zDb = 0; } #ifdef SQLITE_ENABLE_PREUPDATE_HOOK /* Invoke the pre-update hook, if any */ if( pTab ){ if( db->xPreUpdateCallback && !(pOp->p5 & OPFLAG_ISUPDATE) ){ - sqlite3VdbePreUpdateHook(p, pC, SQLITE_INSERT, zDb, pTab, x.nKey,pOp->p2); + sqlite3VdbePreUpdateHook(p,pC,SQLITE_INSERT,zDb,pTab,x.nKey,pOp->p2,-1); } if( db->xUpdateCallback==0 || pTab->aCol==0 ){ /* Prevent post-update hook from running in cases when it should not */ @@ -86423,9 +97453,12 @@ case OP_InsertInt: { if( pOp->p5 & OPFLAG_ISNOOP ) break; #endif - if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++; - if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = x.nKey; - assert( pData->flags & (MEM_Blob|MEM_Str) ); + assert( (pOp->p5 & OPFLAG_LASTROWID)==0 || (pOp->p5 & OPFLAG_NCHANGE)!=0 ); + if( pOp->p5 & OPFLAG_NCHANGE ){ + p->nChange++; + if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = x.nKey; + } + assert( (pData->flags & (MEM_Blob|MEM_Str))!=0 || pData->n==0 ); x.pData = pData->z; x.nData = pData->n; seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0); @@ -86435,11 +97468,14 @@ case OP_InsertInt: { x.nZero = 0; } x.pKey = 0; + assert( BTREE_PREFORMAT==OPFLAG_PREFORMAT ); rc = sqlite3BtreeInsert(pC->uc.pCursor, &x, - (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), seekResult + (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION|OPFLAG_PREFORMAT)), + seekResult ); pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; + colCacheCtr++; /* Invoke the update-hook if required. */ if( rc ) goto abort_due_to_error; @@ -86453,6 +97489,33 @@ case OP_InsertInt: { break; } +/* Opcode: RowCell P1 P2 P3 * * +** +** P1 and P2 are both open cursors. Both must be opened on the same type +** of table - intkey or index. This opcode is used as part of copying +** the current row from P2 into P1. If the cursors are opened on intkey +** tables, register P3 contains the rowid to use with the new record in +** P1. If they are opened on index tables, P3 is not used. +** +** This opcode must be followed by either an Insert or InsertIdx opcode +** with the OPFLAG_PREFORMAT flag set to complete the insert operation. +*/ +case OP_RowCell: { + VdbeCursor *pDest; /* Cursor to write to */ + VdbeCursor *pSrc; /* Cursor to read from */ + i64 iKey; /* Rowid value to insert with */ + assert( pOp[1].opcode==OP_Insert || pOp[1].opcode==OP_IdxInsert ); + assert( pOp[1].opcode==OP_Insert || pOp->p3==0 ); + assert( pOp[1].opcode==OP_IdxInsert || pOp->p3>0 ); + assert( pOp[1].p5 & OPFLAG_PREFORMAT ); + pDest = p->apCsr[pOp->p1]; + pSrc = p->apCsr[pOp->p2]; + iKey = pOp->p3 ? aMem[pOp->p3].u.i : 0; + rc = sqlite3BtreeTransferRow(pDest->uc.pCursor, pSrc->uc.pCursor, iKey); + if( rc!=SQLITE_OK ) goto abort_due_to_error; + break; +}; + /* Opcode: Delete P1 P2 P3 P4 P5 ** ** Delete the record at which the P1 cursor is currently pointing. @@ -86461,15 +97524,15 @@ case OP_InsertInt: { ** the cursor will be left pointing at either the next or the previous ** record in the table. If it is left pointing at the next record, then ** the next Next instruction will be a no-op. As a result, in this case -** it is ok to delete a record from within a Next loop. If +** it is ok to delete a record from within a Next loop. If ** OPFLAG_SAVEPOSITION bit of P5 is clear, then the cursor will be ** left in an undefined state. ** ** If the OPFLAG_AUXDELETE bit is set on P5, that indicates that this -** delete one of several associated with deleting a table row and all its -** associated index entries. Exactly one of those deletes is the "primary" -** delete. The others are all on OPFLAG_FORDELETE cursors or else are -** marked with the AUXDELETE flag. +** delete is one of several associated with deleting a table row and +** all its associated index entries. Exactly one of those deletes is +** the "primary" delete. The others are all on OPFLAG_FORDELETE +** cursors or else are marked with the AUXDELETE flag. ** ** If the OPFLAG_NCHANGE flag of P2 (NB: P2 not P5) is set, then the row ** change count is incremented (otherwise not). @@ -86477,11 +97540,11 @@ case OP_InsertInt: { ** P1 must not be pseudo-table. It has to be a real table with ** multiple rows. ** -** If P4 is not NULL then it points to a Table object. In this case either +** If P4 is not NULL then it points to a Table object. In this case either ** the update or pre-update hook, or both, may be invoked. The P1 cursor must -** have been positioned using OP_NotFound prior to invoking this opcode in -** this case. Specifically, if one is configured, the pre-update hook is -** invoked if P4 is not NULL. The update-hook is invoked if one is configured, +** have been positioned using OP_NotFound prior to invoking this opcode in +** this case. Specifically, if one is configured, the pre-update hook is +** invoked if P4 is not NULL. The update-hook is invoked if one is configured, ** P4 is not NULL, and the OPFLAG_NCHANGE flag is set in P2. ** ** If the OPFLAG_ISUPDATE flag is set in P2, then P3 contains the address @@ -86504,19 +97567,23 @@ case OP_Delete: { sqlite3VdbeIncrWriteCounter(p, pC); #ifdef SQLITE_DEBUG - if( pOp->p4type==P4_TABLE && HasRowid(pOp->p4.pTab) && pOp->p5==0 ){ + if( pOp->p4type==P4_TABLE + && HasRowid(pOp->p4.pTab) + && pOp->p5==0 + && sqlite3BtreeCursorIsValidNN(pC->uc.pCursor) + ){ /* If p5 is zero, the seek operation that positioned the cursor prior to ** OP_Delete will have also set the pC->movetoTarget field to the rowid of ** the row that is being deleted */ i64 iKey = sqlite3BtreeIntegerKey(pC->uc.pCursor); - assert( pC->movetoTarget==iKey ); + assert( CORRUPT_DB || pC->movetoTarget==iKey ); } #endif /* If the update-hook or pre-update-hook will be invoked, set zDb to ** the name of the db to pass as to it. Also set local pTab to a copy ** of p4.pTab. Finally, if p5 is true, indicating that this cursor was - ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set + ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set ** VdbeCursor.movetoTarget to the current rowid. */ if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){ assert( pC->iDb>=0 ); @@ -86527,27 +97594,28 @@ case OP_Delete: { pC->movetoTarget = sqlite3BtreeIntegerKey(pC->uc.pCursor); } }else{ - zDb = 0; /* Not needed. Silence a compiler warning. */ - pTab = 0; /* Not needed. Silence a compiler warning. */ + zDb = 0; + pTab = 0; } #ifdef SQLITE_ENABLE_PREUPDATE_HOOK /* Invoke the pre-update-hook if required. */ - if( db->xPreUpdateCallback && pOp->p4.pTab ){ - assert( !(opflags & OPFLAG_ISUPDATE) - || HasRowid(pTab)==0 - || (aMem[pOp->p3].flags & MEM_Int) + assert( db->xPreUpdateCallback==0 || pTab==pOp->p4.pTab ); + if( db->xPreUpdateCallback && pTab ){ + assert( !(opflags & OPFLAG_ISUPDATE) + || HasRowid(pTab)==0 + || (aMem[pOp->p3].flags & MEM_Int) ); sqlite3VdbePreUpdateHook(p, pC, - (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE, + (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE, zDb, pTab, pC->movetoTarget, - pOp->p3 + pOp->p3, -1 ); } if( opflags & OPFLAG_ISNOOP ) break; #endif - - /* Only flags that can be set are SAVEPOISTION and AUXDELETE */ + + /* Only flags that can be set are SAVEPOISTION and AUXDELETE */ assert( (pOp->p5 & ~(OPFLAG_SAVEPOSITION|OPFLAG_AUXDELETE))==0 ); assert( OPFLAG_SAVEPOSITION==BTREE_SAVEPOSITION ); assert( OPFLAG_AUXDELETE==BTREE_AUXDELETE ); @@ -86568,13 +97636,14 @@ case OP_Delete: { rc = sqlite3BtreeDelete(pC->uc.pCursor, pOp->p5); pC->cacheStatus = CACHE_STALE; + colCacheCtr++; pC->seekResult = 0; if( rc ) goto abort_due_to_error; /* Invoke the update-hook if required. */ if( opflags & OPFLAG_NCHANGE ){ p->nChange++; - if( db->xUpdateCallback && HasRowid(pTab) ){ + if( db->xUpdateCallback && ALWAYS(pTab!=0) && HasRowid(pTab) ){ db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, pTab->zName, pC->movetoTarget); assert( pC->iDb>=0 ); @@ -86600,7 +97669,7 @@ case OP_ResetCount: { ** Synopsis: if key(P1)!=trim(r[P3],P4) goto P2 ** ** P1 is a sorter cursor. This instruction compares a prefix of the -** record blob in register P3 against a prefix of the entry that +** record blob in register P3 against a prefix of the entry that ** the sorter cursor currently points to. Only the first P4 fields ** of r[P3] and the sorter record are compared. ** @@ -86635,13 +97704,13 @@ case OP_SorterCompare: { ** Write into register P2 the current sorter data for sorter cursor P1. ** Then clear the column header cache on cursor P3. ** -** This opcode is normally use to move a record out of the sorter and into +** This opcode is normally used to move a record out of the sorter and into ** a register that is the source for a pseudo-table cursor created using ** OpenPseudo. That pseudo-table cursor is the one that is identified by ** parameter P3. Clearing the P3 column cache as part of this opcode saves ** us from having to issue a separate NullRow instruction to clear that cache. */ -case OP_SorterData: { +case OP_SorterData: { /* ncycle */ VdbeCursor *pC; pOut = &aMem[pOp->p2]; @@ -86658,10 +97727,10 @@ case OP_SorterData: { /* Opcode: RowData P1 P2 P3 * * ** Synopsis: r[P2]=data ** -** Write into register P2 the complete row content for the row at +** Write into register P2 the complete row content for the row at ** which cursor P1 is currently pointing. -** There is no interpretation of the data. -** It is just copied onto the P2 register exactly as +** There is no interpretation of the data. +** It is just copied onto the P2 register exactly as ** it is found in the database file. ** ** If cursor P1 is an index, then the content is the key of the row. @@ -86709,17 +97778,13 @@ case OP_RowData: { */ assert( pC->deferredMoveto==0 ); assert( sqlite3BtreeCursorIsValid(pCrsr) ); -#if 0 /* Not required due to the previous to assert() statements */ - rc = sqlite3VdbeCursorMoveto(pC); - if( rc!=SQLITE_OK ) goto abort_due_to_error; -#endif n = sqlite3BtreePayloadSize(pCrsr); if( n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } testcase( n==0 ); - rc = sqlite3VdbeMemFromBtree(pCrsr, 0, n, pOut); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pCrsr, n, pOut); if( rc ) goto abort_due_to_error; if( !pOp->p3 ) Deephemeralize(pOut); UPDATE_MAX_BLOBSIZE(pOut); @@ -86728,7 +97793,7 @@ case OP_RowData: { } /* Opcode: Rowid P1 P2 * * * -** Synopsis: r[P2]=rowid +** Synopsis: r[P2]=PX rowid of P1 ** ** Store in register P2 an integer which is the key of the table entry that ** P1 is currently point to. @@ -86737,7 +97802,7 @@ case OP_RowData: { ** be a separate OP_VRowid opcode for use with virtual tables, but this ** one opcode now works for both table types. */ -case OP_Rowid: { /* out2 */ +case OP_Rowid: { /* out2, ncycle */ VdbeCursor *pC; i64 v; sqlite3_vtab *pVtab; @@ -86783,19 +97848,34 @@ case OP_Rowid: { /* out2 */ ** Move the cursor P1 to a null row. Any OP_Column operations ** that occur while the cursor is on the null row will always ** write a NULL. +** +** If cursor P1 is not previously opened, open it now to a special +** pseudo-cursor that always returns NULL for every column. */ case OP_NullRow: { VdbeCursor *pC; assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; - assert( pC!=0 ); + if( pC==0 ){ + /* If the cursor is not already open, create a special kind of + ** pseudo-cursor that always gives null rows. */ + pC = allocateCursor(p, pOp->p1, 1, CURTYPE_PSEUDO); + if( pC==0 ) goto no_mem; + pC->seekResult = 0; + pC->isTable = 1; + pC->noReuse = 1; + pC->uc.pCursor = sqlite3BtreeFakeValidCursor(); + } pC->nullRow = 1; pC->cacheStatus = CACHE_STALE; if( pC->eCurType==CURTYPE_BTREE ){ assert( pC->uc.pCursor!=0 ); sqlite3BtreeClearCursor(pC->uc.pCursor); } +#ifdef SQLITE_DEBUG + if( pC->seekOp==0 ) pC->seekOp = OP_NullRow; +#endif break; } @@ -86811,7 +97891,7 @@ case OP_NullRow: { */ /* Opcode: Last P1 P2 * * * ** -** The next use of the Rowid or Column or Prev instruction for P1 +** The next use of the Rowid or Column or Prev instruction for P1 ** will refer to the last entry in the database table or index. ** If the table or index is empty and P2>0, then jump immediately to P2. ** If P2 is 0 or if the table or index is not empty, fall through @@ -86821,8 +97901,8 @@ case OP_NullRow: { ** from the end toward the beginning. In other words, the cursor is ** configured to use Prev, not Next. */ -case OP_SeekEnd: -case OP_Last: { /* jump */ +case OP_SeekEnd: /* ncycle */ +case OP_Last: { /* jump, ncycle */ VdbeCursor *pC; BtCursor *pCrsr; int res; @@ -86905,33 +97985,40 @@ case OP_IfSmaller: { /* jump */ ** regression tests can determine whether or not the optimizer is ** correctly optimizing out sorts. */ -case OP_SorterSort: /* jump */ -case OP_Sort: { /* jump */ +case OP_SorterSort: /* jump ncycle */ +case OP_Sort: { /* jump ncycle */ #ifdef SQLITE_TEST sqlite3_sort_count++; sqlite3_search_count--; #endif p->aCounter[SQLITE_STMTSTATUS_SORT]++; /* Fall through into OP_Rewind */ + /* no break */ deliberate_fall_through } /* Opcode: Rewind P1 P2 * * * ** -** The next use of the Rowid or Column or Next instruction for P1 +** The next use of the Rowid or Column or Next instruction for P1 ** will refer to the first entry in the database table or index. ** If the table or index is empty, jump immediately to P2. -** If the table or index is not empty, fall through to the following +** If the table or index is not empty, fall through to the following ** instruction. ** +** If P2 is zero, that is an assertion that the P1 table is never +** empty and hence the jump will never be taken. +** ** This opcode leaves the cursor configured to move in forward order, ** from the beginning toward the end. In other words, the cursor is ** configured to use Next, not Prev. */ -case OP_Rewind: { /* jump */ +case OP_Rewind: { /* jump, ncycle */ VdbeCursor *pC; BtCursor *pCrsr; int res; assert( pOp->p1>=0 && pOp->p1nCursor ); + assert( pOp->p5==0 ); + assert( pOp->p2>=0 && pOp->p2nOp ); + pC = p->apCsr[pOp->p1]; assert( pC!=0 ); assert( isSorter(pC)==(pOp->opcode==OP_SorterSort) ); @@ -86951,13 +98038,14 @@ case OP_Rewind: { /* jump */ } if( rc ) goto abort_due_to_error; pC->nullRow = (u8)res; - assert( pOp->p2>0 && pOp->p2nOp ); - VdbeBranchTaken(res!=0,2); - if( res ) goto jump_to_p2; + if( pOp->p2>0 ){ + VdbeBranchTaken(res!=0,2); + if( res ) goto jump_to_p2; + } break; } -/* Opcode: Next P1 P2 P3 P4 P5 +/* Opcode: Next P1 P2 P3 * P5 ** ** Advance cursor P1 so that it points to the next key/data pair in its ** table or index. If there are no more key/value pairs then fall through @@ -86976,20 +98064,12 @@ case OP_Rewind: { /* jump */ ** omitted if that index had been unique. P3 is usually 0. P3 is ** always either 0 or 1. ** -** P4 is always of type P4_ADVANCE. The function pointer points to -** sqlite3BtreeNext(). -** ** If P5 is positive and the jump is taken, then event counter ** number P5-1 in the prepared statement is incremented. ** -** See also: Prev, NextIfOpen +** See also: Prev */ -/* Opcode: NextIfOpen P1 P2 P3 P4 P5 -** -** This opcode works just like Next except that if cursor P1 is not -** open it behaves a no-op. -*/ -/* Opcode: Prev P1 P2 P3 P4 P5 +/* Opcode: Prev P1 P2 P3 * P5 ** ** Back up cursor P1 so that it points to the previous key/data pair in its ** table or index. If there is no previous key/value pairs then fall through @@ -87009,17 +98089,9 @@ case OP_Rewind: { /* jump */ ** omitted if that index had been unique. P3 is usually 0. P3 is ** always either 0 or 1. ** -** P4 is always of type P4_ADVANCE. The function pointer points to -** sqlite3BtreePrevious(). -** ** If P5 is positive and the jump is taken, then event counter ** number P5-1 in the prepared statement is incremented. */ -/* Opcode: PrevIfOpen P1 P2 P3 P4 P5 -** -** This opcode works just like Prev except that if cursor P1 is not -** open it behaves a no-op. -*/ /* Opcode: SorterNext P1 P2 * * P5 ** ** This opcode works just like OP_Next except that P1 must be a @@ -87034,33 +98106,37 @@ case OP_SorterNext: { /* jump */ assert( isSorter(pC) ); rc = sqlite3VdbeSorterNext(db, pC); goto next_tail; -case OP_PrevIfOpen: /* jump */ -case OP_NextIfOpen: /* jump */ - if( p->apCsr[pOp->p1]==0 ) break; - /* Fall through */ -case OP_Prev: /* jump */ -case OP_Next: /* jump */ + +case OP_Prev: /* jump, ncycle */ assert( pOp->p1>=0 && pOp->p1nCursor ); - assert( pOp->p5aCounter) ); + assert( pOp->p5==0 + || pOp->p5==SQLITE_STMTSTATUS_FULLSCAN_STEP + || pOp->p5==SQLITE_STMTSTATUS_AUTOINDEX); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); assert( pC->deferredMoveto==0 ); assert( pC->eCurType==CURTYPE_BTREE ); - assert( pOp->opcode!=OP_Next || pOp->p4.xAdvance==sqlite3BtreeNext ); - assert( pOp->opcode!=OP_Prev || pOp->p4.xAdvance==sqlite3BtreePrevious ); - assert( pOp->opcode!=OP_NextIfOpen || pOp->p4.xAdvance==sqlite3BtreeNext ); - assert( pOp->opcode!=OP_PrevIfOpen || pOp->p4.xAdvance==sqlite3BtreePrevious); + assert( pC->seekOp==OP_SeekLT || pC->seekOp==OP_SeekLE + || pC->seekOp==OP_Last || pC->seekOp==OP_IfNoHope + || pC->seekOp==OP_NullRow); + rc = sqlite3BtreePrevious(pC->uc.pCursor, pOp->p3); + goto next_tail; - /* The Next opcode is only used after SeekGT, SeekGE, and Rewind. - ** The Prev opcode is only used after SeekLT, SeekLE, and Last. */ - assert( pOp->opcode!=OP_Next || pOp->opcode!=OP_NextIfOpen - || pC->seekOp==OP_SeekGT || pC->seekOp==OP_SeekGE - || pC->seekOp==OP_Rewind || pC->seekOp==OP_Found); - assert( pOp->opcode!=OP_Prev || pOp->opcode!=OP_PrevIfOpen - || pC->seekOp==OP_SeekLT || pC->seekOp==OP_SeekLE - || pC->seekOp==OP_Last ); +case OP_Next: /* jump, ncycle */ + assert( pOp->p1>=0 && pOp->p1nCursor ); + assert( pOp->p5==0 + || pOp->p5==SQLITE_STMTSTATUS_FULLSCAN_STEP + || pOp->p5==SQLITE_STMTSTATUS_AUTOINDEX); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + assert( pC->deferredMoveto==0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->seekOp==OP_SeekGT || pC->seekOp==OP_SeekGE + || pC->seekOp==OP_Rewind || pC->seekOp==OP_Found + || pC->seekOp==OP_NullRow|| pC->seekOp==OP_SeekRowid + || pC->seekOp==OP_IfNoHope); + rc = sqlite3BtreeNext(pC->uc.pCursor, pOp->p3); - rc = pOp->p4.xAdvance(pC->uc.pCursor, pOp->p3); next_tail: pC->cacheStatus = CACHE_STALE; VdbeBranchTaken(rc==SQLITE_OK,2); @@ -87101,19 +98177,11 @@ next_tail: ** run faster by avoiding an unnecessary seek on cursor P1. However, ** the OPFLAG_USESEEKRESULT flag must only be set if there have been no prior ** seeks on the cursor or if the most recent seek used a key equivalent -** to P2. +** to P2. ** ** This instruction only works for indices. The equivalent instruction ** for tables is OP_Insert. */ -/* Opcode: SorterInsert P1 P2 * * * -** Synopsis: key=r[P2] -** -** Register P2 holds an SQL index key made using the -** MakeRecord instructions. This opcode writes that key -** into the sorter P1. Data for the entry is nil. -*/ -case OP_SorterInsert: /* in2 */ case OP_IdxInsert: { /* in2 */ VdbeCursor *pC; BtreePayload x; @@ -87122,38 +98190,67 @@ case OP_IdxInsert: { /* in2 */ pC = p->apCsr[pOp->p1]; sqlite3VdbeIncrWriteCounter(p, pC); assert( pC!=0 ); - assert( isSorter(pC)==(pOp->opcode==OP_SorterInsert) ); + assert( !isSorter(pC) ); pIn2 = &aMem[pOp->p2]; - assert( pIn2->flags & MEM_Blob ); + assert( (pIn2->flags & MEM_Blob) || (pOp->p5 & OPFLAG_PREFORMAT) ); if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++; - assert( pC->eCurType==CURTYPE_BTREE || pOp->opcode==OP_SorterInsert ); + assert( pC->eCurType==CURTYPE_BTREE ); assert( pC->isTable==0 ); rc = ExpandBlob(pIn2); if( rc ) goto abort_due_to_error; - if( pOp->opcode==OP_SorterInsert ){ - rc = sqlite3VdbeSorterWrite(pC, pIn2); - }else{ - x.nKey = pIn2->n; - x.pKey = pIn2->z; - x.aMem = aMem + pOp->p3; - x.nMem = (u16)pOp->p4.i; - rc = sqlite3BtreeInsert(pC->uc.pCursor, &x, - (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), - ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0) - ); - assert( pC->deferredMoveto==0 ); - pC->cacheStatus = CACHE_STALE; - } + x.nKey = pIn2->n; + x.pKey = pIn2->z; + x.aMem = aMem + pOp->p3; + x.nMem = (u16)pOp->p4.i; + rc = sqlite3BtreeInsert(pC->uc.pCursor, &x, + (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION|OPFLAG_PREFORMAT)), + ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0) + ); + assert( pC->deferredMoveto==0 ); + pC->cacheStatus = CACHE_STALE; if( rc) goto abort_due_to_error; break; } -/* Opcode: IdxDelete P1 P2 P3 * * +/* Opcode: SorterInsert P1 P2 * * * +** Synopsis: key=r[P2] +** +** Register P2 holds an SQL index key made using the +** MakeRecord instructions. This opcode writes that key +** into the sorter P1. Data for the entry is nil. +*/ +case OP_SorterInsert: { /* in2 */ + VdbeCursor *pC; + + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + sqlite3VdbeIncrWriteCounter(p, pC); + assert( pC!=0 ); + assert( isSorter(pC) ); + pIn2 = &aMem[pOp->p2]; + assert( pIn2->flags & MEM_Blob ); + assert( pC->isTable==0 ); + rc = ExpandBlob(pIn2); + if( rc ) goto abort_due_to_error; + rc = sqlite3VdbeSorterWrite(pC, pIn2); + if( rc) goto abort_due_to_error; + break; +} + +/* Opcode: IdxDelete P1 P2 P3 * P5 ** Synopsis: key=r[P2@P3] ** ** The content of P3 registers starting at register P2 form -** an unpacked index key. This opcode removes that entry from the +** an unpacked index key. This opcode removes that entry from the ** index opened by cursor P1. +** +** If P5 is not zero, then raise an SQLITE_CORRUPT_INDEX error +** if no matching index entry is found. This happens when running +** an UPDATE or DELETE statement and the index entry to be updated +** or deleted is not found. For some uses of IdxDelete +** (example: the EXCEPT operator) it does not matter that no matching +** entry is found. For those cases, P5 is zero. Also, do not raise +** this (self-correcting and non-critical) error if in writable_schema mode. */ case OP_IdxDelete: { VdbeCursor *pC; @@ -87170,16 +98267,18 @@ case OP_IdxDelete: { sqlite3VdbeIncrWriteCounter(p, pC); pCrsr = pC->uc.pCursor; assert( pCrsr!=0 ); - assert( pOp->p5==0 ); r.pKeyInfo = pC->pKeyInfo; r.nField = (u16)pOp->p3; r.default_rc = 0; r.aMem = &aMem[pOp->p2]; - rc = sqlite3BtreeMovetoUnpacked(pCrsr, &r, 0, 0, &res); + rc = sqlite3BtreeIndexMoveto(pCrsr, &r, &res); if( rc ) goto abort_due_to_error; if( res==0 ){ rc = sqlite3BtreeDelete(pCrsr, BTREE_AUXDELETE); if( rc ) goto abort_due_to_error; + }else if( pOp->p5 && !sqlite3WritableSchema(db) ){ + rc = sqlite3ReportError(SQLITE_CORRUPT_INDEX, __LINE__, "index corruption"); + goto abort_due_to_error; } assert( pC->deferredMoveto==0 ); pC->cacheStatus = CACHE_STALE; @@ -87200,8 +98299,8 @@ case OP_IdxDelete: { ** ** P4 may be an array of integers (type P4_INTARRAY) containing ** one entry for each column in the P3 table. If array entry a(i) -** is non-zero, then reading column a(i)-1 from cursor P3 is -** equivalent to performing the deferred seek and then reading column i +** is non-zero, then reading column a(i)-1 from cursor P3 is +** equivalent to performing the deferred seek and then reading column i ** from P1. This information is stored in P3 and used to redirect ** reads against P3 over to P1, thus possibly avoiding the need to ** seek and read cursor P3. @@ -87215,8 +98314,8 @@ case OP_IdxDelete: { ** ** See also: Rowid, MakeRecord. */ -case OP_DeferredSeek: -case OP_IdxRowid: { /* out2 */ +case OP_DeferredSeek: /* ncycle */ +case OP_IdxRowid: { /* out2, ncycle */ VdbeCursor *pC; /* The P1 index cursor */ VdbeCursor *pTabCur; /* The P2 table cursor (OP_DeferredSeek only) */ i64 rowid; /* Rowid that P1 current points to */ @@ -87224,9 +98323,9 @@ case OP_IdxRowid: { /* out2 */ assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->eCurType==CURTYPE_BTREE || IsNullCursor(pC) ); assert( pC->uc.pCursor!=0 ); - assert( pC->isTable==0 ); + assert( pC->isTable==0 || IsNullCursor(pC) ); assert( pC->deferredMoveto==0 ); assert( !pC->nullRow || pOp->opcode==OP_IdxRowid ); @@ -87234,10 +98333,10 @@ case OP_IdxRowid: { /* out2 */ ** of sqlite3VdbeCursorRestore() and sqlite3VdbeIdxRowid(). */ rc = sqlite3VdbeCursorRestore(pC); - /* sqlite3VbeCursorRestore() can only fail if the record has been deleted - ** out from under the cursor. That will never happens for an IdxRowid - ** or Seek opcode */ - if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error; + /* sqlite3VdbeCursorRestore() may fail if the cursor has been disturbed + ** since it was last positioned and an error (e.g. OOM or an IO error) + ** occurs while trying to reposition it. */ + if( rc!=SQLITE_OK ) goto abort_due_to_error; if( !pC->nullRow ){ rowid = 0; /* Not needed. Only used to silence a warning. */ @@ -87255,8 +98354,11 @@ case OP_IdxRowid: { /* out2 */ pTabCur->nullRow = 0; pTabCur->movetoTarget = rowid; pTabCur->deferredMoveto = 1; + pTabCur->cacheStatus = CACHE_STALE; assert( pOp->p4type==P4_INTARRAY || pOp->p4.ai==0 ); - pTabCur->aAltMap = pOp->p4.ai; + assert( !pTabCur->isEphemeral ); + pTabCur->ub.aAltMap = pOp->p4.ai; + assert( !pC->isEphemeral ); pTabCur->pAltCursor = pC; }else{ pOut = out2Prerelease(p, pOp); @@ -87269,32 +98371,50 @@ case OP_IdxRowid: { /* out2 */ break; } -/* Opcode: IdxGE P1 P2 P3 P4 P5 +/* Opcode: FinishSeek P1 * * * * +** +** If cursor P1 was previously moved via OP_DeferredSeek, complete that +** seek operation now, without further delay. If the cursor seek has +** already occurred, this instruction is a no-op. +*/ +case OP_FinishSeek: { /* ncycle */ + VdbeCursor *pC; /* The P1 index cursor */ + + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + if( pC->deferredMoveto ){ + rc = sqlite3VdbeFinishMoveto(pC); + if( rc ) goto abort_due_to_error; + } + break; +} + +/* Opcode: IdxGE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** The P4 register values beginning with P3 form an unpacked index -** key that omits the PRIMARY KEY. Compare this key value against the index -** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID +** The P4 register values beginning with P3 form an unpacked index +** key that omits the PRIMARY KEY. Compare this key value against the index +** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID ** fields at the end. ** ** If the P1 index entry is greater than or equal to the key value ** then jump to P2. Otherwise fall through to the next instruction. */ -/* Opcode: IdxGT P1 P2 P3 P4 P5 +/* Opcode: IdxGT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** The P4 register values beginning with P3 form an unpacked index -** key that omits the PRIMARY KEY. Compare this key value against the index -** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID +** The P4 register values beginning with P3 form an unpacked index +** key that omits the PRIMARY KEY. Compare this key value against the index +** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID ** fields at the end. ** ** If the P1 index entry is greater than the key value ** then jump to P2. Otherwise fall through to the next instruction. */ -/* Opcode: IdxLT P1 P2 P3 P4 P5 +/* Opcode: IdxLT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** The P4 register values beginning with P3 form an unpacked index +** The P4 register values beginning with P3 form an unpacked index ** key that omits the PRIMARY KEY or ROWID. Compare this key value against ** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or ** ROWID on the P1 index. @@ -87302,10 +98422,10 @@ case OP_IdxRowid: { /* out2 */ ** If the P1 index entry is less than the key value then jump to P2. ** Otherwise fall through to the next instruction. */ -/* Opcode: IdxLE P1 P2 P3 P4 P5 +/* Opcode: IdxLE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** -** The P4 register values beginning with P3 form an unpacked index +** The P4 register values beginning with P3 form an unpacked index ** key that omits the PRIMARY KEY or ROWID. Compare this key value against ** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or ** ROWID on the P1 index. @@ -87313,10 +98433,10 @@ case OP_IdxRowid: { /* out2 */ ** If the P1 index entry is less than or equal to the key value then jump ** to P2. Otherwise fall through to the next instruction. */ -case OP_IdxLE: /* jump */ -case OP_IdxGT: /* jump */ -case OP_IdxLT: /* jump */ -case OP_IdxGE: { /* jump */ +case OP_IdxLE: /* jump, ncycle */ +case OP_IdxGT: /* jump, ncycle */ +case OP_IdxLT: /* jump, ncycle */ +case OP_IdxGE: { /* jump, ncycle */ VdbeCursor *pC; int res; UnpackedRecord r; @@ -87328,7 +98448,6 @@ case OP_IdxGE: { /* jump */ assert( pC->eCurType==CURTYPE_BTREE ); assert( pC->uc.pCursor!=0); assert( pC->deferredMoveto==0 ); - assert( pOp->p5==0 || pOp->p5==1 ); assert( pOp->p4type==P4_INT32 ); r.pKeyInfo = pC->pKeyInfo; r.nField = (u16)pOp->p4.i; @@ -87341,10 +98460,39 @@ case OP_IdxGE: { /* jump */ } r.aMem = &aMem[pOp->p3]; #ifdef SQLITE_DEBUG - { int i; for(i=0; ip3+i, &aMem[pOp->p3+i]); + } + } #endif - res = 0; /* Not needed. Only used to silence a warning. */ - rc = sqlite3VdbeIdxKeyCompare(db, pC, &r, &res); + + /* Inlined version of sqlite3VdbeIdxKeyCompare() */ + { + i64 nCellKey = 0; + BtCursor *pCur; + Mem m; + + assert( pC->eCurType==CURTYPE_BTREE ); + pCur = pC->uc.pCursor; + assert( sqlite3BtreeCursorIsValid(pCur) ); + nCellKey = sqlite3BtreePayloadSize(pCur); + /* nCellKey will always be between 0 and 0xffffffff because of the way + ** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */ + if( nCellKey<=0 || nCellKey>0x7fffffff ){ + rc = SQLITE_CORRUPT_BKPT; + goto abort_due_to_error; + } + sqlite3VdbeMemInit(&m, db, 0); + rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m); + if( rc ) goto abort_due_to_error; + res = sqlite3VdbeRecordCompareWithSkip(m.n, m.z, &r, 0); + sqlite3VdbeMemReleaseMalloc(&m); + } + /* End of inlined sqlite3VdbeIdxKeyCompare() */ + assert( (OP_IdxLE&1)==(OP_IdxLT&1) && (OP_IdxGE&1)==(OP_IdxGT&1) ); if( (pOp->opcode&1)==(OP_IdxLT&1) ){ assert( pOp->opcode==OP_IdxLE || pOp->opcode==OP_IdxLT ); @@ -87354,7 +98502,7 @@ case OP_IdxGE: { /* jump */ res++; } VdbeBranchTaken(res>0,2); - if( rc ) goto abort_due_to_error; + assert( rc==SQLITE_OK ); if( res>0 ) goto jump_to_p2; break; } @@ -87365,7 +98513,7 @@ case OP_IdxGE: { /* jump */ ** file is given by P1. ** ** The table being destroyed is in the main database file if P3==0. If -** P3==1 then the table to be clear is in the auxiliary database file +** P3==1 then the table to be destroyed is in the auxiliary database file ** that is used to store tables create using CREATE TEMPORARY TABLE. ** ** If AUTOVACUUM is enabled then it is possible that another root page @@ -87373,15 +98521,15 @@ case OP_IdxGE: { /* jump */ ** root pages contiguous at the beginning of the database. The former ** value of the root page that moved - its value before the move occurred - ** is stored in register P2. If no page movement was required (because the -** table being dropped was already the last one in the database) then a -** zero is stored in register P2. If AUTOVACUUM is disabled then a zero +** table being dropped was already the last one in the database) then a +** zero is stored in register P2. If AUTOVACUUM is disabled then a zero ** is stored in register P2. ** ** This opcode throws an error if there are any active reader VMs when -** it is invoked. This is done to avoid the difficulty associated with -** updating existing cursors when a root page is moved in an AUTOVACUUM -** database. This error is thrown even if the database is not an AUTOVACUUM -** db in order to avoid introducing an incompatibility between autovacuum +** it is invoked. This is done to avoid the difficulty associated with +** updating existing cursors when a root page is moved in an AUTOVACUUM +** database. This error is thrown even if the database is not an AUTOVACUUM +** db in order to avoid introducing an incompatibility between autovacuum ** and non-autovacuum modes. ** ** See also: Clear @@ -87425,28 +98573,25 @@ case OP_Destroy: { /* out2 */ ** in the database file is given by P1. But, unlike Destroy, do not ** remove the table or index from the database file. ** -** The table being clear is in the main database file if P2==0. If -** P2==1 then the table to be clear is in the auxiliary database file +** The table being cleared is in the main database file if P2==0. If +** P2==1 then the table to be cleared is in the auxiliary database file ** that is used to store tables create using CREATE TEMPORARY TABLE. ** -** If the P3 value is non-zero, then the table referred to must be an -** intkey table (an SQL table, not an index). In this case the row change -** count is incremented by the number of rows in the table being cleared. -** If P3 is greater than zero, then the value stored in register P3 is -** also incremented by the number of rows in the table being cleared. +** If the P3 value is non-zero, then the row change count is incremented +** by the number of rows in the table being cleared. If P3 is greater +** than zero, then the value stored in register P3 is also incremented +** by the number of rows in the table being cleared. ** ** See also: Destroy */ case OP_Clear: { - int nChange; - + i64 nChange; + sqlite3VdbeIncrWriteCounter(p, 0); nChange = 0; assert( p->readOnly==0 ); assert( DbMaskTest(p->btreeMask, pOp->p2) ); - rc = sqlite3BtreeClearTable( - db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &nChange : 0) - ); + rc = sqlite3BtreeClearTable(db->aDb[pOp->p2].pBt, (u32)pOp->p1, &nChange); if( pOp->p3 ){ p->nChange += nChange; if( pOp->p3>0 ){ @@ -87469,7 +98614,7 @@ case OP_Clear: { */ case OP_ResetSorter: { VdbeCursor *pC; - + assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); @@ -87494,7 +98639,7 @@ case OP_ResetSorter: { ** The root page number of the new b-tree is stored in register P2. */ case OP_CreateBtree: { /* out2 */ - int pgno; + Pgno pgno; Db *pDb; sqlite3VdbeIncrWriteCounter(p, 0); @@ -87527,20 +98672,21 @@ case OP_SqlExec: { /* Opcode: ParseSchema P1 * * P4 * ** -** Read and parse all entries from the SQLITE_MASTER table of database P1 -** that match the WHERE clause P4. +** Read and parse all entries from the schema table of database P1 +** that match the WHERE clause P4. If P4 is a NULL pointer, then the +** entire schema for P1 is reparsed. ** ** This opcode invokes the parser to create a new virtual machine, ** then runs the new virtual machine. It is thus a re-entrant opcode. */ case OP_ParseSchema: { int iDb; - const char *zMaster; + const char *zSchema; char *zSql; InitData initData; /* Any prepared statement that invokes this opcode will hold mutexes - ** on every btree. This is a prerequisite for invoking + ** on every btree. This is a prerequisite for invoking ** sqlite3InitCallback(). */ #ifdef SQLITE_DEBUG @@ -87551,24 +98697,45 @@ case OP_ParseSchema: { iDb = pOp->p1; assert( iDb>=0 && iDbnDb ); - assert( DbHasProperty(db, iDb, DB_SchemaLoaded) ); - /* Used to be a conditional */ { - zMaster = MASTER_NAME; + assert( DbHasProperty(db, iDb, DB_SchemaLoaded) + || db->mallocFailed + || (CORRUPT_DB && (db->flags & SQLITE_NoSchemaError)!=0) ); + +#ifndef SQLITE_OMIT_ALTERTABLE + if( pOp->p4.z==0 ){ + sqlite3SchemaClear(db->aDb[iDb].pSchema); + db->mDbFlags &= ~DBFLAG_SchemaKnownOk; + rc = sqlite3InitOne(db, iDb, &p->zErrMsg, pOp->p5); + db->mDbFlags |= DBFLAG_SchemaChange; + p->expired = 0; + }else +#endif + { + zSchema = LEGACY_SCHEMA_TABLE; initData.db = db; - initData.iDb = pOp->p1; + initData.iDb = iDb; initData.pzErrMsg = &p->zErrMsg; + initData.mInitFlags = 0; + initData.mxPage = sqlite3BtreeLastPage(db->aDb[iDb].pBt); zSql = sqlite3MPrintf(db, - "SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid", - db->aDb[iDb].zDbSName, zMaster, pOp->p4.z); + "SELECT*FROM\"%w\".%s WHERE %s ORDER BY rowid", + db->aDb[iDb].zDbSName, zSchema, pOp->p4.z); if( zSql==0 ){ rc = SQLITE_NOMEM_BKPT; }else{ assert( db->init.busy==0 ); db->init.busy = 1; initData.rc = SQLITE_OK; + initData.nInitRow = 0; assert( !db->mallocFailed ); rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0); if( rc==SQLITE_OK ) rc = initData.rc; + if( rc==SQLITE_OK && initData.nInitRow==0 ){ + /* The OP_ParseSchema opcode with a non-NULL P4 argument should parse + ** at least one SQL statement. Any less than that indicates that + ** the sqlite_schema table is corrupt. */ + rc = SQLITE_CORRUPT_BKPT; + } sqlite3DbFreeNN(db, zSql); db->init.busy = 0; } @@ -87580,7 +98747,7 @@ case OP_ParseSchema: { } goto abort_due_to_error; } - break; + break; } #if !defined(SQLITE_OMIT_ANALYZE) @@ -87594,7 +98761,7 @@ case OP_LoadAnalysis: { assert( pOp->p1>=0 && pOp->p1nDb ); rc = sqlite3AnalysisLoad(db, pOp->p1); if( rc ) goto abort_due_to_error; - break; + break; } #endif /* !defined(SQLITE_OMIT_ANALYZE) */ @@ -87602,7 +98769,7 @@ case OP_LoadAnalysis: { ** ** Remove the internal (in-memory) data structures that describe ** the table named P4 in database P1. This is called after a table -** is dropped from disk (using the Destroy opcode) in order to keep +** is dropped from disk (using the Destroy opcode) in order to keep ** the internal representation of the ** schema consistent with what is on disk. */ @@ -87630,7 +98797,7 @@ case OP_DropIndex: { ** ** Remove the internal (in-memory) data structures that describe ** the trigger named P4 in database P1. This is called after a trigger -** is dropped from disk (using the Destroy opcode) in order to keep +** is dropped from disk (using the Destroy opcode) in order to keep ** the internal representation of the ** schema consistent with what is on disk. */ @@ -87650,7 +98817,7 @@ case OP_DropTrigger: { ** ** The register P3 contains one less than the maximum number of allowed errors. ** At most reg(P3) errors will be reported. -** In other words, the analysis stops as soon as reg(P1) errors are +** In other words, the analysis stops as soon as reg(P1) errors are ** seen. Reg(P1) is updated with the number of errors remaining. ** ** The root page numbers of all tables in the database are integers @@ -87663,7 +98830,7 @@ case OP_DropTrigger: { */ case OP_IntegrityCk: { int nRoot; /* Number of tables to check. (Number of root pages.) */ - int *aRoot; /* Array of rootpage numbers for tables to be checked */ + Pgno *aRoot; /* Array of rootpage numbers for tables to be checked */ int nErr; /* Number of errors reported */ char *z; /* Text of the error report */ Mem *pnErr; /* Register keeping track of errors remaining */ @@ -87672,7 +98839,7 @@ case OP_IntegrityCk: { nRoot = pOp->p2; aRoot = pOp->p4.ai; assert( nRoot>0 ); - assert( aRoot[0]==nRoot ); + assert( aRoot[0]==(Pgno)nRoot ); assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pnErr = &aMem[pOp->p3]; assert( (pnErr->flags & MEM_Int)!=0 ); @@ -87680,20 +98847,21 @@ case OP_IntegrityCk: { pIn1 = &aMem[pOp->p1]; assert( pOp->p5nDb ); assert( DbMaskTest(p->btreeMask, pOp->p5) ); - z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, &aRoot[1], nRoot, - (int)pnErr->u.i+1, &nErr); + rc = sqlite3BtreeIntegrityCheck(db, db->aDb[pOp->p5].pBt, &aRoot[1], nRoot, + (int)pnErr->u.i+1, &nErr, &z); sqlite3VdbeMemSetNull(pIn1); if( nErr==0 ){ assert( z==0 ); - }else if( z==0 ){ - goto no_mem; + }else if( rc ){ + sqlite3_free(z); + goto abort_due_to_error; }else{ pnErr->u.i -= nErr-1; sqlite3VdbeMemSetStr(pIn1, z, -1, SQLITE_UTF8, sqlite3_free); } UPDATE_MAX_BLOBSIZE(pIn1); sqlite3VdbeChangeEncoding(pIn1, encoding); - break; + goto check_for_interrupt; } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -87709,11 +98877,11 @@ case OP_RowSetAdd: { /* in1, in2 */ pIn1 = &aMem[pOp->p1]; pIn2 = &aMem[pOp->p2]; assert( (pIn2->flags & MEM_Int)!=0 ); - if( (pIn1->flags & MEM_RowSet)==0 ){ - sqlite3VdbeMemSetRowSet(pIn1); - if( (pIn1->flags & MEM_RowSet)==0 ) goto no_mem; + if( (pIn1->flags & MEM_Blob)==0 ){ + if( sqlite3VdbeMemSetRowSet(pIn1) ) goto no_mem; } - sqlite3RowSetInsert(pIn1->u.pRowSet, pIn2->u.i); + assert( sqlite3VdbeMemIsRowSet(pIn1) ); + sqlite3RowSetInsert((RowSet*)pIn1->z, pIn2->u.i); break; } @@ -87729,8 +98897,9 @@ case OP_RowSetRead: { /* jump, in1, out3 */ i64 val; pIn1 = &aMem[pOp->p1]; - if( (pIn1->flags & MEM_RowSet)==0 - || sqlite3RowSetNext(pIn1->u.pRowSet, &val)==0 + assert( (pIn1->flags & MEM_Blob)==0 || sqlite3VdbeMemIsRowSet(pIn1) ); + if( (pIn1->flags & MEM_Blob)==0 + || sqlite3RowSetNext((RowSet*)pIn1->z, &val)==0 ){ /* The boolean index is empty */ sqlite3VdbeMemSetNull(pIn1); @@ -87779,20 +98948,19 @@ case OP_RowSetTest: { /* jump, in1, in3 */ /* If there is anything other than a rowset object in memory cell P1, ** delete it now and initialize P1 with an empty rowset */ - if( (pIn1->flags & MEM_RowSet)==0 ){ - sqlite3VdbeMemSetRowSet(pIn1); - if( (pIn1->flags & MEM_RowSet)==0 ) goto no_mem; + if( (pIn1->flags & MEM_Blob)==0 ){ + if( sqlite3VdbeMemSetRowSet(pIn1) ) goto no_mem; } - + assert( sqlite3VdbeMemIsRowSet(pIn1) ); assert( pOp->p4type==P4_INT32 ); assert( iSet==-1 || iSet>=0 ); if( iSet ){ - exists = sqlite3RowSetTest(pIn1->u.pRowSet, iSet, pIn3->u.i); + exists = sqlite3RowSetTest((RowSet*)pIn1->z, iSet, pIn3->u.i); VdbeBranchTaken(exists!=0,2); if( exists ) goto jump_to_p2; } if( iSet>=0 ){ - sqlite3RowSetInsert(pIn1->u.pRowSet, pIn3->u.i); + sqlite3RowSetInsert((RowSet*)pIn1->z, pIn3->u.i); } break; } @@ -87802,13 +98970,13 @@ case OP_RowSetTest: { /* jump, in1, in3 */ /* Opcode: Program P1 P2 P3 P4 P5 ** -** Execute the trigger program passed as P4 (type P4_SUBPROGRAM). +** Execute the trigger program passed as P4 (type P4_SUBPROGRAM). ** -** P1 contains the address of the memory cell that contains the first memory -** cell in an array of values used as arguments to the sub-program. P2 -** contains the address to jump to if the sub-program throws an IGNORE -** exception using the RAISE() function. Register P3 contains the address -** of a memory cell in this (the parent) VM that is used to allocate the +** P1 contains the address of the memory cell that contains the first memory +** cell in an array of values used as arguments to the sub-program. P2 +** contains the address to jump to if the sub-program throws an IGNORE +** exception using the RAISE() function. Register P3 contains the address +** of a memory cell in this (the parent) VM that is used to allocate the ** memory required by the sub-vdbe at runtime. ** ** P4 is a pointer to the VM containing the trigger program. @@ -87828,17 +98996,17 @@ case OP_Program: { /* jump */ pProgram = pOp->p4.pProgram; pRt = &aMem[pOp->p3]; assert( pProgram->nOp>0 ); - - /* If the p5 flag is clear, then recursive invocation of triggers is + + /* If the p5 flag is clear, then recursive invocation of triggers is ** disabled for backwards compatibility (p5 is set if this sub-program ** is really a trigger, not a foreign key action, and the flag set ** and cleared by the "PRAGMA recursive_triggers" command is clear). - ** - ** It is recursive invocation of triggers, at the SQL level, that is - ** disabled. In some cases a single trigger may generate more than one - ** SubProgram (if the trigger may be executed with more than one different + ** + ** It is recursive invocation of triggers, at the SQL level, that is + ** disabled. In some cases a single trigger may generate more than one + ** SubProgram (if the trigger may be executed with more than one different ** ON CONFLICT algorithm). SubProgram structures associated with a - ** single trigger all have the same value for the SubProgram.token + ** single trigger all have the same value for the SubProgram.token ** variable. */ if( pOp->p5 ){ t = pProgram->token; @@ -87854,10 +99022,10 @@ case OP_Program: { /* jump */ /* Register pRt is used to store the memory required to save the state ** of the current program, and the memory required at runtime to execute - ** the trigger program. If this trigger has been fired before, then pRt + ** the trigger program. If this trigger has been fired before, then pRt ** is already allocated. Otherwise, it must be initialized. */ - if( (pRt->flags&MEM_Frame)==0 ){ - /* SubProgram.nMem is set to the number of memory cells used by the + if( (pRt->flags&MEM_Blob)==0 ){ + /* SubProgram.nMem is set to the number of memory cells used by the ** program stored in SubProgram.aOp. As well as these, one memory ** cell is required for each cursor used by the program. Set local ** variable nMem (and later, VdbeFrame.nChildMem) to this value. @@ -87874,8 +99042,10 @@ case OP_Program: { /* jump */ goto no_mem; } sqlite3VdbeMemRelease(pRt); - pRt->flags = MEM_Frame; - pRt->u.pFrame = pFrame; + pRt->flags = MEM_Blob|MEM_Dyn; + pRt->z = (char*)pFrame; + pRt->n = nByte; + pRt->xDel = sqlite3VdbeFrameMemDel; pFrame->v = p; pFrame->nChildMem = nMem; @@ -87888,8 +99058,8 @@ case OP_Program: { /* jump */ pFrame->aOp = p->aOp; pFrame->nOp = p->nOp; pFrame->token = pProgram->token; -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - pFrame->anExec = p->anExec; +#ifdef SQLITE_DEBUG + pFrame->iFrameMagic = SQLITE_FRAME_MAGIC; #endif pEnd = &VdbeFrameMem(pFrame)[pFrame->nChildMem]; @@ -87898,8 +99068,9 @@ case OP_Program: { /* jump */ pMem->db = db; } }else{ - pFrame = pRt->u.pFrame; - assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem + pFrame = (VdbeFrame*)pRt->z; + assert( pRt->xDel==sqlite3VdbeFrameMemDel ); + assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem || (pProgram->nCsr==0 && pProgram->nMem+1==pFrame->nChildMem) ); assert( pProgram->nCsr==pFrame->nChildCsr ); assert( (int)(pOp - aOp)==pFrame->pc ); @@ -87923,20 +99094,27 @@ case OP_Program: { /* jump */ memset(pFrame->aOnce, 0, (pProgram->nOp + 7)/8); p->aOp = aOp = pProgram->aOp; p->nOp = pProgram->nOp; -#ifdef SQLITE_ENABLE_STMT_SCANSTATUS - p->anExec = 0; +#ifdef SQLITE_DEBUG + /* Verify that second and subsequent executions of the same trigger do not + ** try to reuse register values from the first use. */ + { + int i; + for(i=0; inMem; i++){ + aMem[i].pScopyFrom = 0; /* Prevent false-positive AboutToChange() errs */ + MemSetTypeFlag(&aMem[i], MEM_Undefined); /* Fault if this reg is reused */ + } + } #endif pOp = &aOp[-1]; - - break; + goto check_for_interrupt; } /* Opcode: Param P1 P2 * * * ** -** This opcode is only ever present in sub-programs called via the -** OP_Program instruction. Copy a value currently stored in a memory -** cell of the calling (parent) frame to cell P2 in the current frames -** address space. This is used by trigger programs to access the new.* +** This opcode is only ever present in sub-programs called via the +** OP_Program instruction. Copy a value currently stored in a memory +** cell of the calling (parent) frame to cell P2 in the current frames +** address space. This is used by trigger programs to access the new.* ** and old.* values. ** ** The address of the cell in the parent frame is determined by adding @@ -87948,7 +99126,7 @@ case OP_Param: { /* out2 */ Mem *pIn; pOut = out2Prerelease(p, pOp); pFrame = p->pFrame; - pIn = &pFrame->aMem[pOp->p1 + pFrame->aOp[pFrame->pc].p1]; + pIn = &pFrame->aMem[pOp->p1 + pFrame->aOp[pFrame->pc].p1]; sqlite3VdbeMemShallowCopy(pOut, pIn, MEM_Ephem); break; } @@ -87960,8 +99138,8 @@ case OP_Param: { /* out2 */ ** Synopsis: fkctr[P1]+=P2 ** ** Increment a "constraint counter" by P2 (P2 may be negative or positive). -** If P1 is non-zero, the database constraint counter is incremented -** (deferred foreign key constraints). Otherwise, if P1 is zero, the +** If P1 is non-zero, the database constraint counter is incremented +** (deferred foreign key constraints). Otherwise, if P1 is zero, the ** statement counter is incremented (immediate foreign key constraints). */ case OP_FkCounter: { @@ -87979,7 +99157,7 @@ case OP_FkCounter: { ** Synopsis: if fkctr[P1]==0 goto P2 ** ** This opcode tests if a foreign key constraint-counter is currently zero. -** If so, jump to instruction P2. Otherwise, fall through to the next +** If so, jump to instruction P2. Otherwise, fall through to the next ** instruction. ** ** If P1 is non-zero, then the jump is taken if the database constraint-counter @@ -88005,7 +99183,7 @@ case OP_FkIfZero: { /* jump */ ** ** P1 is a register in the root frame of this VM (the root frame is ** different from the current frame if this instruction is being executed -** within a sub-program). Set the value of register P1 to the maximum of +** within a sub-program). Set the value of register P1 to the maximum of ** its current value and the value in register P2. ** ** This instruction throws an error if the memory cell is not initially @@ -88055,7 +99233,7 @@ case OP_IfPos: { /* jump, in1 */ ** Synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) ** ** This opcode performs a commonly used computation associated with -** LIMIT and OFFSET process. r[P1] holds the limit counter. r[P3] +** LIMIT and OFFSET processing. r[P1] holds the limit counter. r[P3] ** holds the offset counter. The opcode computes the combined value ** of the LIMIT and OFFSET and stores that value in r[P2]. The r[P2] ** value computed is the total number of rows that will need to be @@ -88065,7 +99243,7 @@ case OP_IfPos: { /* jump, in1 */ ** and r[P2] is set to be the value of the LIMIT, r[P1]. ** ** if r[P1] is zero or negative, that means there is no LIMIT -** and r[P2] is set to -1. +** and r[P2] is set to -1. ** ** Otherwise, r[P2] is set to the sum of r[P1] and r[P3]. */ @@ -88097,7 +99275,7 @@ case OP_OffsetLimit: { /* in1, out2, in3 */ ** ** Register P1 must contain an integer. If the content of register P1 is ** initially greater than zero, then decrement the value in register P1. -** If it is non-zero (negative or positive) and then also jump to P2. +** If it is non-zero (negative or positive) and then also jump to P2. ** If register P1 is initially zero, leave it unchanged and fall through. */ case OP_IfNotZero: { /* jump, in1 */ @@ -88127,24 +99305,35 @@ case OP_DecrJumpZero: { /* jump, in1 */ } -/* Opcode: AggStep0 * P2 P3 P4 P5 +/* Opcode: AggStep * P2 P3 P4 P5 ** Synopsis: accum=r[P3] step(r[P2@P5]) ** -** Execute the step function for an aggregate. The -** function has P5 arguments. P4 is a pointer to the FuncDef -** structure that specifies the function. Register P3 is the +** Execute the xStep function for an aggregate. +** The function has P5 arguments. P4 is a pointer to the +** FuncDef structure that specifies the function. Register P3 is the ** accumulator. ** ** The P5 arguments are taken from register P2 and its ** successors. */ -/* Opcode: AggStep * P2 P3 P4 P5 +/* Opcode: AggInverse * P2 P3 P4 P5 +** Synopsis: accum=r[P3] inverse(r[P2@P5]) +** +** Execute the xInverse function for an aggregate. +** The function has P5 arguments. P4 is a pointer to the +** FuncDef structure that specifies the function. Register P3 is the +** accumulator. +** +** The P5 arguments are taken from register P2 and its +** successors. +*/ +/* Opcode: AggStep1 P1 P2 P3 P4 P5 ** Synopsis: accum=r[P3] step(r[P2@P5]) ** -** Execute the step function for an aggregate. The -** function has P5 arguments. P4 is a pointer to an sqlite3_context -** object that is used to run the function. Register P3 is -** as the accumulator. +** Execute the xStep (if P1==0) or xInverse (if P1!=0) function for an +** aggregate. The function has P5 arguments. P4 is a pointer to the +** FuncDef structure that specifies the function. Register P3 is the +** accumulator. ** ** The P5 arguments are taken from register P2 and its ** successors. @@ -88155,7 +99344,8 @@ case OP_DecrJumpZero: { /* jump, in1 */ ** sqlite3_context only happens once, instead of on each call to the ** step function. */ -case OP_AggStep0: { +case OP_AggInverse: +case OP_AggStep: { int n; sqlite3_context *pCtx; @@ -88175,13 +99365,19 @@ case OP_AggStep0: { pCtx->pVdbe = p; pCtx->skipFlag = 0; pCtx->isError = 0; + pCtx->enc = encoding; pCtx->argc = n; pOp->p4type = P4_FUNCCTX; pOp->p4.pCtx = pCtx; - pOp->opcode = OP_AggStep; + + /* OP_AggInverse must have P1==1 and OP_AggStep must have P1==0 */ + assert( pOp->p1==(pOp->opcode==OP_AggInverse) ); + + pOp->opcode = OP_AggStep1; /* Fall through into OP_AggStep */ + /* no break */ deliberate_fall_through } -case OP_AggStep: { +case OP_AggStep1: { int i; sqlite3_context *pCtx; Mem *pMem; @@ -88190,10 +99386,21 @@ case OP_AggStep: { pCtx = pOp->p4.pCtx; pMem = &aMem[pOp->p3]; +#ifdef SQLITE_DEBUG + if( pOp->p1 ){ + /* This is an OP_AggInverse call. Verify that xStep has always + ** been called at least once prior to any xInverse call. */ + assert( pMem->uTemp==0x1122e0e3 ); + }else{ + /* This is an OP_AggStep call. Mark it as such. */ + pMem->uTemp = 0x1122e0e3; + } +#endif + /* If this function is inside of a trigger, the register array in aMem[] ** might change from one evaluation to the next. The next block of code ** checks to see if the register array has changed, and if so it - ** reinitializes the relavant parts of the sqlite3_context object */ + ** reinitializes the relevant parts of the sqlite3_context object */ if( pCtx->pMem != pMem ){ pCtx->pMem = pMem; for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i]; @@ -88210,7 +99417,13 @@ case OP_AggStep: { assert( pCtx->pOut->flags==MEM_Null ); assert( pCtx->isError==0 ); assert( pCtx->skipFlag==0 ); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pOp->p1 ){ + (pCtx->pFunc->xInverse)(pCtx,pCtx->argc,pCtx->argv); + }else +#endif (pCtx->pFunc->xSFunc)(pCtx,pCtx->argc,pCtx->argv); /* IMP: R-24505-23230 */ + if( pCtx->isError ){ if( pCtx->isError>0 ){ sqlite3VdbeError(p, "%s", sqlite3_value_text(pCtx->pOut)); @@ -88235,31 +99448,54 @@ case OP_AggStep: { /* Opcode: AggFinal P1 P2 * P4 * ** Synopsis: accum=r[P1] N=P2 ** -** Execute the finalizer function for an aggregate. P1 is -** the memory location that is the accumulator for the aggregate. +** P1 is the memory location that is the accumulator for an aggregate +** or window function. Execute the finalizer function +** for an aggregate and store the result in P1. ** ** P2 is the number of arguments that the step function takes and ** P4 is a pointer to the FuncDef for this function. The P2 ** argument is not used by this opcode. It is only there to disambiguate ** functions that can take varying numbers of arguments. The -** P4 argument is only needed for the degenerate case where +** P4 argument is only needed for the case where ** the step function was not previously called. */ +/* Opcode: AggValue * P2 P3 P4 * +** Synopsis: r[P3]=value N=P2 +** +** Invoke the xValue() function and store the result in register P3. +** +** P2 is the number of arguments that the step function takes and +** P4 is a pointer to the FuncDef for this function. The P2 +** argument is not used by this opcode. It is only there to disambiguate +** functions that can take varying numbers of arguments. The +** P4 argument is only needed for the case where +** the step function was not previously called. +*/ +case OP_AggValue: case OP_AggFinal: { Mem *pMem; assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); + assert( pOp->p3==0 || pOp->opcode==OP_AggValue ); pMem = &aMem[pOp->p1]; assert( (pMem->flags & ~(MEM_Null|MEM_Agg))==0 ); - rc = sqlite3VdbeMemFinalize(pMem, pOp->p4.pFunc); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pOp->p3 ){ + memAboutToChange(p, &aMem[pOp->p3]); + rc = sqlite3VdbeMemAggValue(pMem, &aMem[pOp->p3], pOp->p4.pFunc); + pMem = &aMem[pOp->p3]; + }else +#endif + { + rc = sqlite3VdbeMemFinalize(pMem, pOp->p4.pFunc); + } + if( rc ){ sqlite3VdbeError(p, "%s", sqlite3_value_text(pMem)); goto abort_due_to_error; } sqlite3VdbeChangeEncoding(pMem, encoding); UPDATE_MAX_BLOBSIZE(pMem); - if( sqlite3VdbeMemTooBig(pMem) ){ - goto too_big; - } + REGISTER_TRACE((int)(pMem-aMem), pMem); break; } @@ -88296,9 +99532,9 @@ case OP_Checkpoint: { } for(i=0, pMem = &aMem[pOp->p3]; i<3; i++, pMem++){ sqlite3VdbeMemSetInt64(pMem, (i64)aRes[i]); - } + } break; -}; +}; #endif #ifndef SQLITE_OMIT_PRAGMA @@ -88324,9 +99560,9 @@ case OP_JournalMode: { /* out2 */ pOut = out2Prerelease(p, pOp); eNew = pOp->p3; - assert( eNew==PAGER_JOURNALMODE_DELETE - || eNew==PAGER_JOURNALMODE_TRUNCATE - || eNew==PAGER_JOURNALMODE_PERSIST + assert( eNew==PAGER_JOURNALMODE_DELETE + || eNew==PAGER_JOURNALMODE_TRUNCATE + || eNew==PAGER_JOURNALMODE_PERSIST || eNew==PAGER_JOURNALMODE_OFF || eNew==PAGER_JOURNALMODE_MEMORY || eNew==PAGER_JOURNALMODE_WAL @@ -88339,13 +99575,14 @@ case OP_JournalMode: { /* out2 */ pPager = sqlite3BtreePager(pBt); eOld = sqlite3PagerGetJournalMode(pPager); if( eNew==PAGER_JOURNALMODE_QUERY ) eNew = eOld; + assert( sqlite3BtreeHoldsMutex(pBt) ); if( !sqlite3PagerOkToChangeJournalMode(pPager) ) eNew = eOld; #ifndef SQLITE_OMIT_WAL zFilename = sqlite3PagerFilename(pPager, 1); /* Do not allow a transition to journal_mode=WAL for a database - ** in temporary storage or if the VFS does not support shared memory + ** in temporary storage or if the VFS does not support shared memory */ if( eNew==PAGER_JOURNALMODE_WAL && (sqlite3Strlen30(zFilename)==0 /* Temp file */ @@ -88365,12 +99602,12 @@ case OP_JournalMode: { /* out2 */ ); goto abort_due_to_error; }else{ - + if( eOld==PAGER_JOURNALMODE_WAL ){ /* If leaving WAL mode, close the log file. If successful, the call - ** to PagerCloseWal() checkpoints and deletes the write-ahead-log - ** file. An EXCLUSIVE lock may still be held on the database file - ** after a successful return. + ** to PagerCloseWal() checkpoints and deletes the write-ahead-log + ** file. An EXCLUSIVE lock may still be held on the database file + ** after a successful return. */ rc = sqlite3PagerCloseWal(pPager, db); if( rc==SQLITE_OK ){ @@ -88381,11 +99618,11 @@ case OP_JournalMode: { /* out2 */ ** as an intermediate */ sqlite3PagerSetJournalMode(pPager, PAGER_JOURNALMODE_OFF); } - + /* Open a transaction on the database file. Regardless of the journal ** mode, this transaction always uses a rollback journal. */ - assert( sqlite3BtreeIsInTrans(pBt)==0 ); + assert( sqlite3BtreeTxnState(pBt)!=SQLITE_TXN_WRITE ); if( rc==SQLITE_OK ){ rc = sqlite3BtreeSetVersion(pBt, (eNew==PAGER_JOURNALMODE_WAL ? 2 : 1)); } @@ -88407,14 +99644,19 @@ case OP_JournalMode: { /* out2 */ #endif /* SQLITE_OMIT_PRAGMA */ #if !defined(SQLITE_OMIT_VACUUM) && !defined(SQLITE_OMIT_ATTACH) -/* Opcode: Vacuum P1 * * * * +/* Opcode: Vacuum P1 P2 * * * ** ** Vacuum the entire database P1. P1 is 0 for "main", and 2 or more ** for an attached database. The "temp" database may not be vacuumed. +** +** If P2 is not zero, then it is a register holding a string which is +** the file into which the result of vacuum should be written. When +** P2 is zero, the vacuum overwrites the original database. */ case OP_Vacuum: { assert( p->readOnly==0 ); - rc = sqlite3RunVacuum(&p->zErrMsg, db, pOp->p1); + rc = sqlite3RunVacuum(&p->zErrMsg, db, pOp->p1, + pOp->p2 ? &aMem[pOp->p2] : 0); if( rc ) goto abort_due_to_error; break; } @@ -88445,31 +99687,68 @@ case OP_IncrVacuum: { /* jump */ } #endif -/* Opcode: Expire P1 * * * * +/* Opcode: Expire P1 P2 * * * ** ** Cause precompiled statements to expire. When an expired statement ** is executed using sqlite3_step() it will either automatically ** reprepare itself (if it was originally created using sqlite3_prepare_v2()) ** or it will fail with SQLITE_SCHEMA. -** +** ** If P1 is 0, then all SQL statements become expired. If P1 is non-zero, ** then only the currently executing statement is expired. +** +** If P2 is 0, then SQL statements are expired immediately. If P2 is 1, +** then running SQL statements are allowed to continue to run to completion. +** The P2==1 case occurs when a CREATE INDEX or similar schema change happens +** that might help the statement run faster but which does not affect the +** correctness of operation. */ case OP_Expire: { + assert( pOp->p2==0 || pOp->p2==1 ); if( !pOp->p1 ){ - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, pOp->p2); }else{ - p->expired = 1; + p->expired = pOp->p2+1; } break; } +/* Opcode: CursorLock P1 * * * * +** +** Lock the btree to which cursor P1 is pointing so that the btree cannot be +** written by an other cursor. +*/ +case OP_CursorLock: { + VdbeCursor *pC; + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + sqlite3BtreeCursorPin(pC->uc.pCursor); + break; +} + +/* Opcode: CursorUnlock P1 * * * * +** +** Unlock the btree to which cursor P1 is pointing so that it can be +** written by other cursors. +*/ +case OP_CursorUnlock: { + VdbeCursor *pC; + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + sqlite3BtreeCursorUnpin(pC->uc.pCursor); + break; +} + #ifndef SQLITE_OMIT_SHARED_CACHE /* Opcode: TableLock P1 P2 P3 P4 * ** Synopsis: iDb=P1 root=P2 write=P3 ** ** Obtain a lock on a particular table. This instruction is only used when -** the shared-cache feature is enabled. +** the shared-cache feature is enabled. ** ** P1 is the index of the database in sqlite3.aDb[] of the database ** on which the lock is acquired. A readlock is obtained if P3==0 or @@ -88483,7 +99762,7 @@ case OP_Expire: { case OP_TableLock: { u8 isWriteLock = (u8)pOp->p3; if( isWriteLock || 0==(db->flags&SQLITE_ReadUncommit) ){ - int p1 = pOp->p1; + int p1 = pOp->p1; assert( p1>=0 && p1nDb ); assert( DbMaskTest(p->btreeMask, p1) ); assert( isWriteLock==0 || isWriteLock==1 ); @@ -88503,7 +99782,7 @@ case OP_TableLock: { #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VBegin * * * P4 * ** -** P4 may be a pointer to an sqlite3_vtab structure. If so, call the +** P4 may be a pointer to an sqlite3_vtab structure. If so, call the ** xBegin method for that table. ** ** Also, whether or not P4 is set, check that this is not being called from @@ -88523,7 +99802,7 @@ case OP_VBegin: { #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VCreate P1 P2 * * * ** -** P2 is a register that holds the name of a virtual table in database +** P2 is a register that holds the name of a virtual table in database ** P1. Call the xCreate method for that table. */ case OP_VCreate: { @@ -88559,6 +99838,7 @@ case OP_VDestroy: { db->nVDestroy++; rc = sqlite3VtabCallDestroy(db, pOp->p1, pOp->p4.z); db->nVDestroy--; + assert( p->errorAction==OE_Abort && p->usesStmtJournal ); if( rc ) goto abort_due_to_error; break; } @@ -88571,7 +99851,7 @@ case OP_VDestroy: { ** P1 is a cursor number. This opcode opens a cursor to the virtual ** table and stores that cursor in P1. */ -case OP_VOpen: { +case OP_VOpen: { /* ncycle */ VdbeCursor *pCur; sqlite3_vtab_cursor *pVCur; sqlite3_vtab *pVtab; @@ -88594,7 +99874,7 @@ case OP_VOpen: { pVCur->pVtab = pVtab; /* Initialize vdbe cursor object */ - pCur = allocateCursor(p, pOp->p1, 0, -1, CURTYPE_VTAB); + pCur = allocateCursor(p, pOp->p1, 0, CURTYPE_VTAB); if( pCur ){ pCur->uc.pVCur = pVCur; pVtab->nRef++; @@ -88607,6 +99887,34 @@ case OP_VOpen: { } #endif /* SQLITE_OMIT_VIRTUALTABLE */ +#ifndef SQLITE_OMIT_VIRTUALTABLE +/* Opcode: VInitIn P1 P2 P3 * * +** Synopsis: r[P2]=ValueList(P1,P3) +** +** Set register P2 to be a pointer to a ValueList object for cursor P1 +** with cache register P3 and output register P3+1. This ValueList object +** can be used as the first argument to sqlite3_vtab_in_first() and +** sqlite3_vtab_in_next() to extract all of the values stored in the P1 +** cursor. Register P3 is used to hold the values returned by +** sqlite3_vtab_in_first() and sqlite3_vtab_in_next(). +*/ +case OP_VInitIn: { /* out2, ncycle */ + VdbeCursor *pC; /* The cursor containing the RHS values */ + ValueList *pRhs; /* New ValueList object to put in reg[P2] */ + + pC = p->apCsr[pOp->p1]; + pRhs = sqlite3_malloc64( sizeof(*pRhs) ); + if( pRhs==0 ) goto no_mem; + pRhs->pCsr = pC->uc.pCursor; + pRhs->pOut = &aMem[pOp->p3]; + pOut = out2Prerelease(p, pOp); + pOut->flags = MEM_Null; + sqlite3VdbeMemSetPointer(pOut, pRhs, "ValueList", sqlite3VdbeValueListFree); + break; +} +#endif /* SQLITE_OMIT_VIRTUALTABLE */ + + #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VFilter P1 P2 P3 P4 * ** Synopsis: iplan=r[P3] zplan='P4' @@ -88627,7 +99935,7 @@ case OP_VOpen: { ** ** A jump is made to P2 if the result set after filtering would be empty. */ -case OP_VFilter: { /* jump */ +case OP_VFilter: { /* jump, ncycle */ int nArg; int iQuery; const sqlite3_module *pModule; @@ -88645,6 +99953,7 @@ case OP_VFilter: { /* jump */ pCur = p->apCsr[pOp->p1]; assert( memIsValid(pQuery) ); REGISTER_TRACE(pOp->p3, pQuery); + assert( pCur!=0 ); assert( pCur->eCurType==CURTYPE_VTAB ); pVCur = pCur->uc.pVCur; pVtab = pVCur->pVtab; @@ -88656,7 +99965,6 @@ case OP_VFilter: { /* jump */ iQuery = (int)pQuery->u.i; /* Invoke the xFilter method */ - res = 0; apArg = p->apArg; for(i = 0; iapCsr[pOp->p1]; - assert( pCur->eCurType==CURTYPE_VTAB ); + assert( pCur!=0 ); assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pDest = &aMem[pOp->p3]; memAboutToChange(p, pDest); @@ -88701,12 +100010,15 @@ case OP_VColumn: { sqlite3VdbeMemSetNull(pDest); break; } + assert( pCur->eCurType==CURTYPE_VTAB ); pVtab = pCur->uc.pVCur->pVtab; pModule = pVtab->pModule; assert( pModule->xColumn ); memset(&sContext, 0, sizeof(sContext)); sContext.pOut = pDest; - if( pOp->p5 ){ + sContext.enc = encoding; + assert( pOp->p5==OPFLAG_NOCHNG || pOp->p5==0 ); + if( pOp->p5 & OPFLAG_NOCHNG ){ sqlite3VdbeMemSetNull(pDest); pDest->flags = MEM_Null|MEM_Zero; pDest->u.nZero = 0; @@ -88723,9 +100035,6 @@ case OP_VColumn: { REGISTER_TRACE(pOp->p3, pDest); UPDATE_MAX_BLOBSIZE(pDest); - if( sqlite3VdbeMemTooBig(pDest) ){ - goto too_big; - } if( rc ) goto abort_due_to_error; break; } @@ -88738,14 +100047,14 @@ case OP_VColumn: { ** jump to instruction P2. Or, if the virtual table has reached ** the end of its result set, then fall through to the next instruction. */ -case OP_VNext: { /* jump */ +case OP_VNext: { /* jump, ncycle */ sqlite3_vtab *pVtab; const sqlite3_module *pModule; int res; VdbeCursor *pCur; - res = 0; pCur = p->apCsr[pOp->p1]; + assert( pCur!=0 ); assert( pCur->eCurType==CURTYPE_VTAB ); if( pCur->nullRow ){ break; @@ -88756,7 +100065,7 @@ case OP_VNext: { /* jump */ /* Invoke the xNext() method of the module. There is no way for the ** underlying implementation to return an error if one occurs during - ** xNext(). Instead, if an error occurs, true is returned (indicating that + ** xNext(). Instead, if an error occurs, true is returned (indicating that ** data is available) and the error code returned when xColumn or ** some other method is next invoked on the save virtual table cursor. */ @@ -88783,7 +100092,10 @@ case OP_VNext: { /* jump */ case OP_VRename: { sqlite3_vtab *pVtab; Mem *pName; + int isLegacy; + isLegacy = (db->flags & SQLITE_LegacyAlter); + db->flags |= SQLITE_LegacyAlter; pVtab = pOp->p4.pVtab->pVtab; pName = &aMem[pOp->p1]; assert( pVtab->pModule->xRename ); @@ -88797,6 +100109,7 @@ case OP_VRename: { rc = sqlite3VdbeChangeEncoding(pName, SQLITE_UTF8); if( rc ) goto abort_due_to_error; rc = pVtab->pModule->xRename(pVtab, pName->z); + if( isLegacy==0 ) db->flags &= ~(u64)SQLITE_LegacyAlter; sqlite3VtabImportErrmsg(p, pVtab); p->expired = 0; if( rc ) goto abort_due_to_error; @@ -88810,23 +100123,23 @@ case OP_VRename: { ** ** P4 is a pointer to a virtual table object, an sqlite3_vtab structure. ** This opcode invokes the corresponding xUpdate method. P2 values -** are contiguous memory cells starting at P3 to pass to the xUpdate -** invocation. The value in register (P3+P2-1) corresponds to the +** are contiguous memory cells starting at P3 to pass to the xUpdate +** invocation. The value in register (P3+P2-1) corresponds to the ** p2th element of the argv array passed to xUpdate. ** ** The xUpdate method will do a DELETE or an INSERT or both. ** The argv[0] element (which corresponds to memory cell P3) -** is the rowid of a row to delete. If argv[0] is NULL then no -** deletion occurs. The argv[1] element is the rowid of the new -** row. This can be NULL to have the virtual table select the new -** rowid for itself. The subsequent elements in the array are +** is the rowid of a row to delete. If argv[0] is NULL then no +** deletion occurs. The argv[1] element is the rowid of the new +** row. This can be NULL to have the virtual table select the new +** rowid for itself. The subsequent elements in the array are ** the values of columns in the new row. ** ** If P2==1 then no insert is performed. argv[0] is the rowid of ** a row to delete. ** ** P1 is a boolean flag. If it is set to true and the xUpdate call -** is successful, then the value returned by sqlite3_last_insert_rowid() +** is successful, then the value returned by sqlite3_last_insert_rowid() ** is set to the value of the rowid for the row just inserted. ** ** P5 is the error actions (OE_Replace, OE_Fail, OE_Ignore, etc) to @@ -88837,14 +100150,15 @@ case OP_VUpdate: { const sqlite3_module *pModule; int nArg; int i; - sqlite_int64 rowid; + sqlite_int64 rowid = 0; Mem **apArg; Mem *pX; - assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback + assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace ); assert( p->readOnly==0 ); + if( db->mallocFailed ) goto no_mem; sqlite3VdbeIncrWriteCounter(p, 0); pVtab = pOp->p4.pVtab->pVtab; if( pVtab==0 || NEVER(pVtab->pModule==0) ){ @@ -88925,74 +100239,54 @@ case OP_MaxPgcnt: { /* out2 */ } #endif -/* Opcode: Function0 P1 P2 P3 P4 P5 -** Synopsis: r[P3]=func(r[P2@P5]) -** -** Invoke a user function (P4 is a pointer to a FuncDef object that -** defines the function) with P5 arguments taken from register P2 and -** successors. The result of the function is stored in register P3. -** Register P3 must not be one of the function inputs. -** -** P1 is a 32-bit bitmask indicating whether or not each argument to the -** function was determined to be constant at compile time. If the first -** argument was constant then bit 0 of P1 is set. This is used to determine -** whether meta data associated with a user function argument using the -** sqlite3_set_auxdata() API may be safely retained until the next -** invocation of this opcode. -** -** See also: Function, AggStep, AggFinal -*/ -/* Opcode: Function P1 P2 P3 P4 P5 -** Synopsis: r[P3]=func(r[P2@P5]) +/* Opcode: Function P1 P2 P3 P4 * +** Synopsis: r[P3]=func(r[P2@NP]) ** ** Invoke a user function (P4 is a pointer to an sqlite3_context object that -** contains a pointer to the function to be run) with P5 arguments taken -** from register P2 and successors. The result of the function is stored +** contains a pointer to the function to be run) with arguments taken +** from register P2 and successors. The number of arguments is in +** the sqlite3_context object that P4 points to. +** The result of the function is stored ** in register P3. Register P3 must not be one of the function inputs. ** -** P1 is a 32-bit bitmask indicating whether or not each argument to the +** P1 is a 32-bit bitmask indicating whether or not each argument to the ** function was determined to be constant at compile time. If the first ** argument was constant then bit 0 of P1 is set. This is used to determine ** whether meta data associated with a user function argument using the ** sqlite3_set_auxdata() API may be safely retained until the next ** invocation of this opcode. ** -** SQL functions are initially coded as OP_Function0 with P4 pointing -** to a FuncDef object. But on first evaluation, the P4 operand is -** automatically converted into an sqlite3_context object and the operation -** changed to this OP_Function opcode. In this way, the initialization of -** the sqlite3_context object occurs only once, rather than once for each -** evaluation of the function. -** -** See also: Function0, AggStep, AggFinal +** See also: AggStep, AggFinal, PureFunc */ -case OP_PureFunc0: -case OP_Function0: { - int n; - sqlite3_context *pCtx; - - assert( pOp->p4type==P4_FUNCDEF ); - n = pOp->p5; - assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); - assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem+1 - p->nCursor)+1) ); - assert( pOp->p3p2 || pOp->p3>=pOp->p2+n ); - pCtx = sqlite3DbMallocRawNN(db, sizeof(*pCtx) + (n-1)*sizeof(sqlite3_value*)); - if( pCtx==0 ) goto no_mem; - pCtx->pOut = 0; - pCtx->pFunc = pOp->p4.pFunc; - pCtx->iOp = (int)(pOp - aOp); - pCtx->pVdbe = p; - pCtx->isError = 0; - pCtx->argc = n; - pOp->p4type = P4_FUNCCTX; - pOp->p4.pCtx = pCtx; - assert( OP_PureFunc == OP_PureFunc0+2 ); - assert( OP_Function == OP_Function0+2 ); - pOp->opcode += 2; - /* Fall through into OP_Function */ -} -case OP_PureFunc: -case OP_Function: { +/* Opcode: PureFunc P1 P2 P3 P4 * +** Synopsis: r[P3]=func(r[P2@NP]) +** +** Invoke a user function (P4 is a pointer to an sqlite3_context object that +** contains a pointer to the function to be run) with arguments taken +** from register P2 and successors. The number of arguments is in +** the sqlite3_context object that P4 points to. +** The result of the function is stored +** in register P3. Register P3 must not be one of the function inputs. +** +** P1 is a 32-bit bitmask indicating whether or not each argument to the +** function was determined to be constant at compile time. If the first +** argument was constant then bit 0 of P1 is set. This is used to determine +** whether meta data associated with a user function argument using the +** sqlite3_set_auxdata() API may be safely retained until the next +** invocation of this opcode. +** +** This opcode works exactly like OP_Function. The only difference is in +** its name. This opcode is used in places where the function must be +** purely non-deterministic. Some built-in date/time functions can be +** either deterministic of non-deterministic, depending on their arguments. +** When those function are used in a non-deterministic way, they will check +** to see if they were called using OP_PureFunc instead of OP_Function, and +** if they were, they throw an error. +** +** See also: AggStep, AggFinal, Function +*/ +case OP_PureFunc: /* group */ +case OP_Function: { /* group */ int i; sqlite3_context *pCtx; @@ -89002,12 +100296,15 @@ case OP_Function: { /* If this function is inside of a trigger, the register array in aMem[] ** might change from one evaluation to the next. The next block of code ** checks to see if the register array has changed, and if so it - ** reinitializes the relavant parts of the sqlite3_context object */ + ** reinitializes the relevant parts of the sqlite3_context object */ pOut = &aMem[pOp->p3]; if( pCtx->pOut != pOut ){ + pCtx->pVdbe = p; pCtx->pOut = pOut; + pCtx->enc = encoding; for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i]; } + assert( pCtx->pVdbe==p ); memAboutToChange(p, pOut); #ifdef SQLITE_DEBUG @@ -89031,17 +100328,98 @@ case OP_Function: { if( rc ) goto abort_due_to_error; } - /* Copy the result of the function into register P3 */ - if( pOut->flags & (MEM_Str|MEM_Blob) ){ - sqlite3VdbeChangeEncoding(pOut, encoding); - if( sqlite3VdbeMemTooBig(pOut) ) goto too_big; - } + assert( (pOut->flags&MEM_Str)==0 + || pOut->enc==encoding + || db->mallocFailed ); + assert( !sqlite3VdbeMemTooBig(pOut) ); REGISTER_TRACE(pOp->p3, pOut); UPDATE_MAX_BLOBSIZE(pOut); break; } +/* Opcode: ClrSubtype P1 * * * * +** Synopsis: r[P1].subtype = 0 +** +** Clear the subtype from register P1. +*/ +case OP_ClrSubtype: { /* in1 */ + pIn1 = &aMem[pOp->p1]; + pIn1->flags &= ~MEM_Subtype; + break; +} + +/* Opcode: FilterAdd P1 * P3 P4 * +** Synopsis: filter(P1) += key(P3@P4) +** +** Compute a hash on the P4 registers starting with r[P3] and +** add that hash to the bloom filter contained in r[P1]. +*/ +case OP_FilterAdd: { + u64 h; + + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); + pIn1 = &aMem[pOp->p1]; + assert( pIn1->flags & MEM_Blob ); + assert( pIn1->n>0 ); + h = filterHash(aMem, pOp); +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + int ii; + for(ii=pOp->p3; iip3+pOp->p4.i; ii++){ + registerTrace(ii, &aMem[ii]); + } + printf("hash: %llu modulo %d -> %u\n", h, pIn1->n, (int)(h%pIn1->n)); + } +#endif + h %= (pIn1->n*8); + pIn1->z[h/8] |= 1<<(h&7); + break; +} + +/* Opcode: Filter P1 P2 P3 P4 * +** Synopsis: if key(P3@P4) not in filter(P1) goto P2 +** +** Compute a hash on the key contained in the P4 registers starting +** with r[P3]. Check to see if that hash is found in the +** bloom filter hosted by register P1. If it is not present then +** maybe jump to P2. Otherwise fall through. +** +** False negatives are harmless. It is always safe to fall through, +** even if the value is in the bloom filter. A false negative causes +** more CPU cycles to be used, but it should still yield the correct +** answer. However, an incorrect answer may well arise from a +** false positive - if the jump is taken when it should fall through. +*/ +case OP_Filter: { /* jump */ + u64 h; + + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); + pIn1 = &aMem[pOp->p1]; + assert( (pIn1->flags & MEM_Blob)!=0 ); + assert( pIn1->n >= 1 ); + h = filterHash(aMem, pOp); +#ifdef SQLITE_DEBUG + if( db->flags&SQLITE_VdbeTrace ){ + int ii; + for(ii=pOp->p3; iip3+pOp->p4.i; ii++){ + registerTrace(ii, &aMem[ii]); + } + printf("hash: %llu modulo %d -> %u\n", h, pIn1->n, (int)(h%pIn1->n)); + } +#endif + h %= (pIn1->n*8); + if( (pIn1->z[h/8] & (1<<(h&7)))==0 ){ + VdbeBranchTaken(1, 2); + p->aCounter[SQLITE_STMTSTATUS_FILTER_HIT]++; + goto jump_to_p2; + }else{ + p->aCounter[SQLITE_STMTSTATUS_FILTER_MISS]++; + VdbeBranchTaken(0, 2); + } + break; +} + /* Opcode: Trace P1 P2 * P4 * ** ** Write P4 on the statement trace output if statement tracing is @@ -89090,23 +100468,22 @@ case OP_Init: { /* jump */ #ifndef SQLITE_OMIT_TRACE if( (db->mTrace & (SQLITE_TRACE_STMT|SQLITE_TRACE_LEGACY))!=0 - && !p->doingRerun + && p->minWriteFileFormat!=254 /* tag-20220401a */ && (zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0 ){ #ifndef SQLITE_OMIT_DEPRECATED if( db->mTrace & SQLITE_TRACE_LEGACY ){ - void (*x)(void*,const char*) = (void(*)(void*,const char*))db->xTrace; char *z = sqlite3VdbeExpandSql(p, zTrace); - x(db->pTraceArg, z); + db->trace.xLegacy(db->pTraceArg, z); sqlite3_free(z); }else #endif if( db->nVdbeExec>1 ){ char *z = sqlite3MPrintf(db, "-- %s", zTrace); - (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, z); + (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, z); sqlite3DbFree(db, z); }else{ - (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace); + (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace); } } #ifdef SQLITE_USE_FCNTL_TRACE @@ -89179,6 +100556,55 @@ case OP_Abortable: { } #endif +#ifdef SQLITE_DEBUG +/* Opcode: ReleaseReg P1 P2 P3 * P5 +** Synopsis: release r[P1@P2] mask P3 +** +** Release registers from service. Any content that was in the +** the registers is unreliable after this opcode completes. +** +** The registers released will be the P2 registers starting at P1, +** except if bit ii of P3 set, then do not release register P1+ii. +** In other words, P3 is a mask of registers to preserve. +** +** Releasing a register clears the Mem.pScopyFrom pointer. That means +** that if the content of the released register was set using OP_SCopy, +** a change to the value of the source register for the OP_SCopy will no longer +** generate an assertion fault in sqlite3VdbeMemAboutToChange(). +** +** If P5 is set, then all released registers have their type set +** to MEM_Undefined so that any subsequent attempt to read the released +** register (before it is reinitialized) will generate an assertion fault. +** +** P5 ought to be set on every call to this opcode. +** However, there are places in the code generator will release registers +** before their are used, under the (valid) assumption that the registers +** will not be reallocated for some other purpose before they are used and +** hence are safe to release. +** +** This opcode is only available in testing and debugging builds. It is +** not generated for release builds. The purpose of this opcode is to help +** validate the generated bytecode. This opcode does not actually contribute +** to computing an answer. +*/ +case OP_ReleaseReg: { + Mem *pMem; + int i; + u32 constMask; + assert( pOp->p1>0 ); + assert( pOp->p1+pOp->p2<=(p->nMem+1 - p->nCursor)+1 ); + pMem = &aMem[pOp->p1]; + constMask = pOp->p3; + for(i=0; ip2; i++, pMem++){ + if( i>=32 || (constMask & MASKBIT32(i))==0 ){ + pMem->pScopyFrom = 0; + if( i<32 && pOp->p5 ) MemSetTypeFlag(pMem, MEM_Undefined); + } + } + break; +} +#endif + /* Opcode: Noop * * * * * ** ** Do nothing. This instruction is often useful as a jump @@ -89204,11 +100630,13 @@ default: { /* This is really OP_Noop, OP_Explain */ *****************************************************************************/ } -#ifdef VDBE_PROFILE - { - u64 endTime = sqlite3NProfileCnt ? sqlite3NProfileCnt : sqlite3Hwtime(); - if( endTime>start ) pOrigOp->cycles += endTime - start; - pOrigOp->cnt++; +#if defined(VDBE_PROFILE) + *pnCycle += sqlite3NProfileCnt ? sqlite3NProfileCnt : sqlite3Hwtime(); + pnCycle = 0; +#elif defined(SQLITE_ENABLE_STMT_SCANSTATUS) + if( pnCycle ){ + *pnCycle += sqlite3Hwtime(); + pnCycle = 0; } #endif @@ -89230,6 +100658,12 @@ default: { /* This is really OP_Noop, OP_Explain */ if( opProperty & OPFLG_OUT3 ){ registerTrace(pOrigOp->p3, &aMem[pOrigOp->p3]); } + if( opProperty==0xff ){ + /* Never happens. This code exists to avoid a harmless linkage + ** warning about sqlite3VdbeRegisterDump() being defined but not + ** used. */ + sqlite3VdbeRegisterDump(p); + } } #endif /* SQLITE_DEBUG */ #endif /* NDEBUG */ @@ -89239,18 +100673,37 @@ default: { /* This is really OP_Noop, OP_Explain */ ** an error of some kind. */ abort_due_to_error: - if( db->mallocFailed ) rc = SQLITE_NOMEM_BKPT; + if( db->mallocFailed ){ + rc = SQLITE_NOMEM_BKPT; + }else if( rc==SQLITE_IOERR_CORRUPTFS ){ + rc = SQLITE_CORRUPT_BKPT; + } assert( rc ); +#ifdef SQLITE_DEBUG + if( db->flags & SQLITE_VdbeTrace ){ + const char *zTrace = p->zSql; + if( zTrace==0 ){ + if( aOp[0].opcode==OP_Trace ){ + zTrace = aOp[0].p4.z; + } + if( zTrace==0 ) zTrace = "???"; + } + printf("ABORT-due-to-error (rc=%d): %s\n", rc, zTrace); + } +#endif if( p->zErrMsg==0 && rc!=SQLITE_IOERR_NOMEM ){ sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc)); } p->rc = rc; sqlite3SystemError(db, rc); testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(rc, "statement aborts at %d: [%s] %s", + sqlite3_log(rc, "statement aborts at %d: [%s] %s", (int)(pOp - aOp), p->zSql, p->zErrMsg); - sqlite3VdbeHalt(p); + if( p->eVdbeState==VDBE_RUN_STATE ) sqlite3VdbeHalt(p); if( rc==SQLITE_IOERR_NOMEM ) sqlite3OomFault(db); + if( rc==SQLITE_CORRUPT && db->autoCommit==0 ){ + db->flags |= SQLITE_CorruptRdOnly; + } rc = SQLITE_ERROR; if( resetSchemaOnFault>0 ){ sqlite3ResetOneSchema(db, resetSchemaOnFault-1); @@ -89260,11 +100713,34 @@ abort_due_to_error: ** release the mutexes on btrees that were acquired at the ** top. */ vdbe_return: - testcase( nVmStep>0 ); +#if defined(VDBE_PROFILE) + if( pnCycle ){ + *pnCycle += sqlite3NProfileCnt ? sqlite3NProfileCnt : sqlite3Hwtime(); + pnCycle = 0; + } +#elif defined(SQLITE_ENABLE_STMT_SCANSTATUS) + if( pnCycle ){ + *pnCycle += sqlite3Hwtime(); + pnCycle = 0; + } +#endif + +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK + while( nVmStep>=nProgressLimit && db->xProgress!=0 ){ + nProgressLimit += db->nProgressOps; + if( db->xProgress(db->pProgressArg) ){ + nProgressLimit = LARGEST_UINT64; + rc = SQLITE_INTERRUPT; + goto abort_due_to_error; + } + } +#endif p->aCounter[SQLITE_STMTSTATUS_VM_STEP] += (int)nVmStep; - sqlite3VdbeLeave(p); - assert( rc!=SQLITE_OK || nExtraDelete==0 - || sqlite3_strlike("DELETE%",p->zSql,0)!=0 + if( DbMaskNonZero(p->lockMask) ){ + sqlite3VdbeLeave(p); + } + assert( rc!=SQLITE_OK || nExtraDelete==0 + || sqlite3_strlike("DELETE%",p->zSql,0)!=0 ); return rc; @@ -89288,10 +100764,8 @@ no_mem: ** flag. */ abort_due_to_interrupt: - assert( db->u1.isInterrupted ); - rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT; - p->rc = rc; - sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc)); + assert( AtomicLoad(&db->u1.isInterrupted) ); + rc = SQLITE_INTERRUPT; goto abort_due_to_error; } @@ -89348,7 +100822,7 @@ struct Incrblob { ** sqlite3DbFree(). ** ** If an error does occur, then the b-tree cursor is closed. All subsequent -** calls to sqlite3_blob_read(), blob_write() or blob_reopen() will +** calls to sqlite3_blob_read(), blob_write() or blob_reopen() will ** immediately return SQLITE_ABORT. */ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){ @@ -89356,7 +100830,7 @@ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){ char *zErr = 0; /* Error message */ Vdbe *v = (Vdbe *)p->pStmt; - /* Set the value of register r[1] in the SQL statement to integer iRow. + /* Set the value of register r[1] in the SQL statement to integer iRow. ** This is done directly as a performance optimization */ v->aMem[1].flags = MEM_Int; @@ -89375,7 +100849,10 @@ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){ } if( rc==SQLITE_ROW ){ VdbeCursor *pC = v->apCsr[0]; - u32 type = pC->nHdrParsed>p->iCol ? pC->aType[p->iCol] : 0; + u32 type; + assert( pC!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + type = pC->nHdrParsed>p->iCol ? pC->aType[p->iCol] : 0; testcase( pC->nHdrParsed==p->iCol ); testcase( pC->nHdrParsed==p->iCol+1 ); if( type<12 ){ @@ -89449,10 +100926,9 @@ SQLITE_API int sqlite3_blob_open( sqlite3_mutex_enter(db->mutex); pBlob = (Incrblob *)sqlite3DbMallocZero(db, sizeof(Incrblob)); - do { - memset(&sParse, 0, sizeof(Parse)); + while(1){ + sqlite3ParseObjectInit(&sParse,db); if( !pBlob ) goto blob_open_out; - sParse.db = db; sqlite3DbFree(db, zErr); zErr = 0; @@ -89467,7 +100943,7 @@ SQLITE_API int sqlite3_blob_open( sqlite3ErrorMsg(&sParse, "cannot open table without rowid: %s", zTable); } #ifndef SQLITE_OMIT_VIEW - if( pTab && pTab->pSelect ){ + if( pTab && IsView(pTab) ){ pTab = 0; sqlite3ErrorMsg(&sParse, "cannot open view: %s", zTable); } @@ -89487,7 +100963,7 @@ SQLITE_API int sqlite3_blob_open( /* Now search pTab for the exact column. */ for(iCol=0; iColnCol; iCol++) { - if( sqlite3StrICmp(pTab->aCol[iCol].zName, zColumn)==0 ){ + if( sqlite3StrICmp(pTab->aCol[iCol].zCnName, zColumn)==0 ){ break; } } @@ -89500,7 +100976,7 @@ SQLITE_API int sqlite3_blob_open( } /* If the value is being opened for writing, check that the - ** column is not indexed, and that it is not part of a foreign key. + ** column is not indexed, and that it is not part of a foreign key. */ if( wrFlag ){ const char *zFault = 0; @@ -89509,10 +100985,11 @@ SQLITE_API int sqlite3_blob_open( if( db->flags&SQLITE_ForeignKeys ){ /* Check that the column is not part of an FK child key definition. It ** is not necessary to check if it is part of a parent key, as parent - ** key columns must be indexed. The check below will pick up this + ** key columns must be indexed. The check below will pick up this ** case. */ FKey *pFKey; - for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){ + assert( IsOrdinaryTable(pTab) ); + for(pFKey=pTab->u.tab.pFKey; pFKey; pFKey=pFKey->pNextFrom){ int j; for(j=0; jnCol; j++){ if( pFKey->aCol[j].iFrom==iCol ){ @@ -89543,8 +101020,8 @@ SQLITE_API int sqlite3_blob_open( pBlob->pStmt = (sqlite3_stmt *)sqlite3VdbeCreate(&sParse); assert( pBlob->pStmt || db->mallocFailed ); if( pBlob->pStmt ){ - - /* This VDBE program seeks a btree cursor to the identified + + /* This VDBE program seeks a btree cursor to the identified ** db/table/row entry. The reason for using a vdbe program instead ** of writing code to use the b-tree layer directly is that the ** vdbe program will take advantage of the various transaction, @@ -89552,11 +101029,11 @@ SQLITE_API int sqlite3_blob_open( ** ** After seeking the cursor, the vdbe executes an OP_ResultRow. ** Code external to the Vdbe then "borrows" the b-tree cursor and - ** uses it to implement the blob_read(), blob_write() and + ** uses it to implement the blob_read(), blob_write() and ** blob_bytes() functions. ** ** The sqlite3_blob_close() function finalizes the vdbe program, - ** which closes the b-tree cursor and (possibly) commits the + ** which closes the b-tree cursor and (possibly) commits the ** transaction. */ static const int iLn = VDBE_OFFSET_LINENO(2); @@ -89573,7 +101050,7 @@ SQLITE_API int sqlite3_blob_open( int iDb = sqlite3SchemaToIndex(db, pTab->pSchema); VdbeOp *aOp; - sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag, + sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag, pTab->pSchema->schema_cookie, pTab->pSchema->iGeneration); sqlite3VdbeChangeP5(v, 1); @@ -89581,7 +101058,7 @@ SQLITE_API int sqlite3_blob_open( aOp = sqlite3VdbeAddOpList(v, ArraySize(openBlob), openBlob, iLn); /* Make sure a mutex is held on the table to be accessed */ - sqlite3VdbeUsesBtree(v, iDb); + sqlite3VdbeUsesBtree(v, iDb); if( db->mallocFailed==0 ){ assert( aOp!=0 ); @@ -89597,17 +101074,17 @@ SQLITE_API int sqlite3_blob_open( if( db->mallocFailed==0 ){ #endif - /* Remove either the OP_OpenWrite or OpenRead. Set the P2 + /* Remove either the OP_OpenWrite or OpenRead. Set the P2 ** parameter of the other to pTab->tnum. */ if( wrFlag ) aOp[1].opcode = OP_OpenWrite; aOp[1].p2 = pTab->tnum; - aOp[1].p3 = iDb; + aOp[1].p3 = iDb; /* Configure the number of columns. Configure the cursor to ** think that the table has one more column than it really ** does. An OP_Column to retrieve this imaginary column will ** always return an SQL NULL. This is useful because it means - ** we can invoke OP_Column to fill in the vdbe cursors type + ** we can invoke OP_Column to fill in the vdbe cursors type ** and offset cache without causing any IO. */ aOp[1].p4type = P4_INT32; @@ -89620,7 +101097,7 @@ SQLITE_API int sqlite3_blob_open( sqlite3VdbeMakeReady(v, &sParse); } } - + pBlob->iCol = iCol; pBlob->db = db; sqlite3BtreeLeaveAll(db); @@ -89628,7 +101105,9 @@ SQLITE_API int sqlite3_blob_open( goto blob_open_out; } rc = blobSeekToRow(pBlob, iRow, &zErr); - } while( (++nAttempt)=SQLITE_MAX_SCHEMA_RETRY || rc!=SQLITE_SCHEMA ) break; + sqlite3ParseObjectReset(&sParse); + } blob_open_out: if( rc==SQLITE_OK && db->mallocFailed==0 ){ @@ -89637,9 +101116,9 @@ blob_open_out: if( pBlob && pBlob->pStmt ) sqlite3VdbeFinalize((Vdbe *)pBlob->pStmt); sqlite3DbFree(db, pBlob); } - sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr); + sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : (char*)0), zErr); sqlite3DbFree(db, zErr); - sqlite3ParserReset(&sParse); + sqlite3ParseObjectReset(&sParse); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; @@ -89655,11 +101134,12 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){ sqlite3 *db; if( p ){ + sqlite3_stmt *pStmt = p->pStmt; db = p->db; sqlite3_mutex_enter(db->mutex); - rc = sqlite3_finalize(p->pStmt); sqlite3DbFree(db, p); sqlite3_mutex_leave(db->mutex); + rc = sqlite3_finalize(pStmt); }else{ rc = SQLITE_OK; } @@ -89670,10 +101150,10 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){ ** Perform a read or write operation on a blob */ static int blobReadWrite( - sqlite3_blob *pBlob, - void *z, - int n, - int iOffset, + sqlite3_blob *pBlob, + void *z, + int n, + int iOffset, int (*xCall)(BtCursor*, u32, u32, void*) ){ int rc; @@ -89703,14 +101183,14 @@ static int blobReadWrite( #ifdef SQLITE_ENABLE_PREUPDATE_HOOK if( xCall==sqlite3BtreePutData && db->xPreUpdateCallback ){ - /* If a pre-update hook is registered and this is a write cursor, - ** invoke it here. - ** + /* If a pre-update hook is registered and this is a write cursor, + ** invoke it here. + ** ** TODO: The preupdate-hook is passed SQLITE_DELETE, even though this ** operation should really be an SQLITE_UPDATE. This is probably - ** incorrect, but is convenient because at this point the new.* values - ** are not easily obtainable. And for the sessions module, an - ** SQLITE_UPDATE where the PK columns do not change is handled in the + ** incorrect, but is convenient because at this point the new.* values + ** are not easily obtainable. And for the sessions module, an + ** SQLITE_UPDATE where the PK columns do not change is handled in the ** same way as an SQLITE_DELETE (the SQLITE_DELETE code is actually ** slightly more efficient). Since you cannot write to a PK column ** using the incremental-blob API, this works. For the sessions module @@ -89718,8 +101198,10 @@ static int blobReadWrite( */ sqlite3_int64 iKey; iKey = sqlite3BtreeIntegerKey(p->pCsr); + assert( v->apCsr[0]!=0 ); + assert( v->apCsr[0]->eCurType==CURTYPE_BTREE ); sqlite3VdbePreUpdateHook( - v, v->apCsr[0], SQLITE_DELETE, p->zDb, p->pTab, iKey, -1 + v, v->apCsr[0], SQLITE_DELETE, p->zDb, p->pTab, iKey, -1, p->iCol ); } #endif @@ -89770,8 +101252,8 @@ SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *pBlob){ ** ** If an error occurs, or if the specified row does not exist or does not ** contain a blob or text value, then an error code is returned and the -** database handle error code and message set. If this happens, then all -** subsequent calls to sqlite3_blob_xxx() functions (except blob_close()) +** database handle error code and message set. If this happens, then all +** subsequent calls to sqlite3_blob_xxx() functions (except blob_close()) ** immediately return SQLITE_ABORT. */ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ @@ -89790,9 +101272,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ rc = SQLITE_ABORT; }else{ char *zErr; + ((Vdbe*)p->pStmt)->rc = SQLITE_OK; rc = blobSeekToRow(p, iRow, &zErr); if( rc!=SQLITE_OK ){ - sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr); + sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : (char*)0), zErr); sqlite3DbFree(db, zErr); } assert( rc!=SQLITE_SCHEMA ); @@ -89865,7 +101348,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ ** is like Close() followed by Init() only ** much faster. ** -** The interfaces above must be called in a particular order. Write() can +** The interfaces above must be called in a particular order. Write() can ** only occur in between Init()/Reset() and Rewind(). Next(), Rowkey(), and ** Compare() can only occur in between Rewind() and Close()/Reset(). i.e. ** @@ -89873,16 +101356,16 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ ** for each record: Write() ** Rewind() ** Rowkey()/Compare() -** Next() +** Next() ** Close() ** ** Algorithm: ** -** Records passed to the sorter via calls to Write() are initially held +** Records passed to the sorter via calls to Write() are initially held ** unsorted in main memory. Assuming the amount of memory used never exceeds ** a threshold, when Rewind() is called the set of records is sorted using ** an in-memory merge sort. In this case, no temporary files are required -** and subsequent calls to Rowkey(), Next() and Compare() read records +** and subsequent calls to Rowkey(), Next() and Compare() read records ** directly from main memory. ** ** If the amount of space used to store records in main memory exceeds the @@ -89892,10 +101375,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ ** of PMAs may be created by merging existing PMAs together - for example ** merging two or more level-0 PMAs together creates a level-1 PMA. ** -** The threshold for the amount of main memory to use before flushing +** The threshold for the amount of main memory to use before flushing ** records to a PMA is roughly the same as the limit configured for the -** page-cache of the main database. Specifically, the threshold is set to -** the value returned by "PRAGMA main.page_size" multipled by +** page-cache of the main database. Specifically, the threshold is set to +** the value returned by "PRAGMA main.page_size" multiplied by ** that returned by "PRAGMA main.cache_size", in bytes. ** ** If the sorter is running in single-threaded mode, then all PMAs generated @@ -89912,28 +101395,28 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ ** than zero, and (b) worker threads have been enabled at runtime by calling ** "PRAGMA threads=N" with some value of N greater than 0. ** -** When Rewind() is called, any data remaining in memory is flushed to a +** When Rewind() is called, any data remaining in memory is flushed to a ** final PMA. So at this point the data is stored in some number of sorted ** PMAs within temporary files on disk. ** ** If there are fewer than SORTER_MAX_MERGE_COUNT PMAs in total and the ** sorter is running in single-threaded mode, then these PMAs are merged -** incrementally as keys are retreived from the sorter by the VDBE. The +** incrementally as keys are retrieved from the sorter by the VDBE. The ** MergeEngine object, described in further detail below, performs this ** merge. ** ** Or, if running in multi-threaded mode, then a background thread is ** launched to merge the existing PMAs. Once the background thread has -** merged T bytes of data into a single sorted PMA, the main thread +** merged T bytes of data into a single sorted PMA, the main thread ** begins reading keys from that PMA while the background thread proceeds ** with merging the next T bytes of data. And so on. ** -** Parameter T is set to half the value of the memory threshold used +** Parameter T is set to half the value of the memory threshold used ** by Write() above to determine when to create a new PMA. ** -** If there are more than SORTER_MAX_MERGE_COUNT PMAs in total when -** Rewind() is called, then a hierarchy of incremental-merges is used. -** First, T bytes of data from the first SORTER_MAX_MERGE_COUNT PMAs on +** If there are more than SORTER_MAX_MERGE_COUNT PMAs in total when +** Rewind() is called, then a hierarchy of incremental-merges is used. +** First, T bytes of data from the first SORTER_MAX_MERGE_COUNT PMAs on ** disk are merged together. Then T bytes of data from the second set, and ** so on, such that no operation ever merges more than SORTER_MAX_MERGE_COUNT ** PMAs at a time. This done is to improve locality. @@ -89948,7 +101431,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ /* #include "sqliteInt.h" */ /* #include "vdbeInt.h" */ -/* +/* ** If SQLITE_DEBUG_SORTER_THREADS is defined, this module outputs various ** messages to stderr that may be helpful in understanding the performance ** characteristics of the sorter in multi-threaded mode. @@ -89977,7 +101460,7 @@ typedef struct SorterList SorterList; /* In-memory list of records */ typedef struct IncrMerger IncrMerger; /* Read & merge multiple PMAs */ /* -** A container for a temp file handle and the current amount of data +** A container for a temp file handle and the current amount of data ** stored in the file. */ struct SorterFile { @@ -90017,17 +101500,17 @@ struct SorterList { ** the MergeEngine.nTree variable. ** ** The final (N/2) elements of aTree[] contain the results of comparing -** pairs of PMA keys together. Element i contains the result of +** pairs of PMA keys together. Element i contains the result of ** comparing aReadr[2*i-N] and aReadr[2*i-N+1]. Whichever key is smaller, the -** aTree element is set to the index of it. +** aTree element is set to the index of it. ** ** For the purposes of this comparison, EOF is considered greater than any ** other key value. If the keys are equal (only possible with two EOF ** values), it doesn't matter which index is stored. ** -** The (N/4) elements of aTree[] that precede the final (N/2) described +** The (N/4) elements of aTree[] that precede the final (N/2) described ** above contains the index of the smallest of each block of 4 PmaReaders -** And so on. So that aTree[1] contains the index of the PmaReader that +** And so on. So that aTree[1] contains the index of the PmaReader that ** currently points to the smallest key value. aTree[0] is unused. ** ** Example: @@ -90043,7 +101526,7 @@ struct SorterList { ** ** aTree[] = { X, 5 0, 5 0, 3, 5, 6 } ** -** The current element is "Apple" (the value of the key indicated by +** The current element is "Apple" (the value of the key indicated by ** PmaReader 5). When the Next() operation is invoked, PmaReader 5 will ** be advanced to the next key in its segment. Say the next key is ** "Eggplant": @@ -90081,11 +101564,11 @@ struct MergeEngine { ** ** Essentially, this structure contains all those fields of the VdbeSorter ** structure for which each thread requires a separate instance. For example, -** each thread requries its own UnpackedRecord object to unpack records in +** each thread requeries its own UnpackedRecord object to unpack records in ** as part of comparison operations. ** -** Before a background thread is launched, variable bDone is set to 0. Then, -** right before it exits, the thread itself sets bDone to 1. This is used for +** Before a background thread is launched, variable bDone is set to 0. Then, +** right before it exits, the thread itself sets bDone to 1. This is used for ** two purposes: ** ** 1. When flushing the contents of memory to a level-0 PMA on disk, to @@ -90116,7 +101599,7 @@ struct SortSubtask { /* -** Main sorter structure. A single instance of this is allocated for each +** Main sorter structure. A single instance of this is allocated for each ** sorter cursor created by the VDBE. ** ** mxKeysize: @@ -90153,7 +101636,7 @@ struct VdbeSorter { ** PMA, in sorted order. The next key to be read is cached in nKey/aKey. ** aKey might point into aMap or into aBuffer. If neither of those locations ** contain a contiguous representation of the key, then aAlloc is allocated -** and the key is copied into aAlloc and aKey is made to poitn to aAlloc. +** and the key is copied into aAlloc and aKey is made to point to aAlloc. ** ** pFd==0 at EOF. */ @@ -90172,21 +101655,21 @@ struct PmaReader { }; /* -** Normally, a PmaReader object iterates through an existing PMA stored +** Normally, a PmaReader object iterates through an existing PMA stored ** within a temp file. However, if the PmaReader.pIncr variable points to ** an object of the following type, it may be used to iterate/merge through ** multiple PMAs simultaneously. ** -** There are two types of IncrMerger object - single (bUseThread==0) and -** multi-threaded (bUseThread==1). +** There are two types of IncrMerger object - single (bUseThread==0) and +** multi-threaded (bUseThread==1). ** -** A multi-threaded IncrMerger object uses two temporary files - aFile[0] -** and aFile[1]. Neither file is allowed to grow to more than mxSz bytes in -** size. When the IncrMerger is initialized, it reads enough data from -** pMerger to populate aFile[0]. It then sets variables within the -** corresponding PmaReader object to read from that file and kicks off -** a background thread to populate aFile[1] with the next mxSz bytes of -** sorted record data from pMerger. +** A multi-threaded IncrMerger object uses two temporary files - aFile[0] +** and aFile[1]. Neither file is allowed to grow to more than mxSz bytes in +** size. When the IncrMerger is initialized, it reads enough data from +** pMerger to populate aFile[0]. It then sets variables within the +** corresponding PmaReader object to read from that file and kicks off +** a background thread to populate aFile[1] with the next mxSz bytes of +** sorted record data from pMerger. ** ** When the PmaReader reaches the end of aFile[0], it blocks until the ** background thread has finished populating aFile[1]. It then exchanges @@ -90197,7 +101680,7 @@ struct PmaReader { ** ** A single-threaded IncrMerger does not open any temporary files of its ** own. Instead, it has exclusive access to mxSz bytes of space beginning -** at offset iStartOff of file pTask->file2. And instead of using a +** at offset iStartOff of file pTask->file2. And instead of using a ** background thread to prepare data for the PmaReader, with a single ** threaded IncrMerger the allocate part of pTask->file2 is "refilled" with ** keys from pMerger by the calling thread whenever the PmaReader runs out @@ -90309,7 +101792,7 @@ static int vdbePmaReadBlob( assert( p->aBuffer ); - /* If there is no more data to be read from the buffer, read the next + /* If there is no more data to be read from the buffer, read the next ** p->nBuffer bytes of data from the file into it. Or, if there are less ** than p->nBuffer bytes remaining in the PMA, read all remaining data. */ iBuf = p->iReadOff % p->nBuffer; @@ -90330,11 +101813,11 @@ static int vdbePmaReadBlob( assert( rc!=SQLITE_IOERR_SHORT_READ ); if( rc!=SQLITE_OK ) return rc; } - nAvail = p->nBuffer - iBuf; + nAvail = p->nBuffer - iBuf; if( nByte<=nAvail ){ /* The requested data is available in the in-memory buffer. In this - ** case there is no need to make a copy of the data, just return a + ** case there is no need to make a copy of the data, just return a ** pointer into the buffer to the caller. */ *ppOut = &p->aBuffer[iBuf]; p->iReadOff += nByte; @@ -90347,7 +101830,7 @@ static int vdbePmaReadBlob( /* Extend the p->aAlloc[] allocation if required. */ if( p->nAllocnAlloc*2); + sqlite3_int64 nNew = MAX(128, 2*(sqlite3_int64)p->nAlloc); while( nByte>nNew ) nNew = nNew*2; aNew = sqlite3Realloc(p->aAlloc, nNew); if( !aNew ) return SQLITE_NOMEM_BKPT; @@ -90413,7 +101896,7 @@ static int vdbePmaReadVarint(PmaReader *p, u64 *pnOut){ /* ** Attempt to memory map file pFile. If successful, set *pp to point to the -** new mapping and return SQLITE_OK. If the mapping is not attempted +** new mapping and return SQLITE_OK. If the mapping is not attempted ** (because the file is too large or the VFS layer is configured not to use ** mmap), return SQLITE_OK and set *pp to NULL. ** @@ -90434,7 +101917,7 @@ static int vdbeSorterMapFile(SortSubtask *pTask, SorterFile *pFile, u8 **pp){ /* ** Attach PmaReader pReadr to file pFile (if it is not already attached to -** that file) and seek it to offset iOff within the file. Return SQLITE_OK +** that file) and seek it to offset iOff within the file. Return SQLITE_OK ** if successful, or an SQLite error code if an error occurs. */ static int vdbePmaReaderSeek( @@ -90524,11 +102007,11 @@ static int vdbePmaReaderNext(PmaReader *pReadr){ /* ** Initialize PmaReader pReadr to scan through the PMA stored in file pFile -** starting at offset iStart and ending at offset iEof-1. This function -** leaves the PmaReader pointing to the first key in the PMA (or EOF if the +** starting at offset iStart and ending at offset iEof-1. This function +** leaves the PmaReader pointing to the first key in the PMA (or EOF if the ** PMA is empty). ** -** If the pnByte parameter is NULL, then it is assumed that the file +** If the pnByte parameter is NULL, then it is assumed that the file ** contains a single PMA, and that that PMA omits the initial length varint. */ static int vdbePmaReaderInit( @@ -90561,7 +102044,7 @@ static int vdbePmaReaderInit( /* ** A version of vdbeSorterCompare() that assumes that it has already been -** determined that the first field of key1 is equal to the first field of +** determined that the first field of key1 is equal to the first field of ** key2. */ static int vdbeSorterCompareTail( @@ -90579,7 +102062,7 @@ static int vdbeSorterCompareTail( } /* -** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2, +** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2, ** size nKey2 bytes). Use (pTask->pKeyInfo) for the collation sequences ** used by the comparison. Return the result of the comparison. ** @@ -90625,8 +102108,8 @@ static int vdbeSorterCompareText( int n2; int res; - getVarint32(&p1[1], n1); - getVarint32(&p2[1], n2); + getVarint32NR(&p1[1], n1); + getVarint32NR(&p2[1], n2); res = memcmp(v1, v2, (MIN(n1, n2) - 13)/2); if( res==0 ){ res = n1 - n2; @@ -90639,7 +102122,8 @@ static int vdbeSorterCompareText( ); } }else{ - if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){ + assert( !(pTask->pSorter->pKeyInfo->aSortFlags[0]&KEYINFO_ORDER_BIGNULL) ); + if( pTask->pSorter->pKeyInfo->aSortFlags[0] ){ res = res * -1; } } @@ -90707,7 +102191,8 @@ static int vdbeSorterCompareInt( pTask, pbKey2Cached, pKey1, nKey1, pKey2, nKey2 ); } - }else if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){ + }else if( pTask->pSorter->pKeyInfo->aSortFlags[0] ){ + assert( !(pTask->pSorter->pKeyInfo->aSortFlags[0]&KEYINFO_ORDER_BIGNULL) ); res = res * -1; } @@ -90723,7 +102208,7 @@ static int vdbeSorterCompareInt( ** is non-zero and the sorter is able to guarantee a stable sort, nField ** is used instead. This is used when sorting records for a CREATE INDEX ** statement. In this case, keys are always delivered to the sorter in -** order of the primary key, which happens to be make up the final part +** order of the primary key, which happens to be make up the final part ** of the records being sorted. So if the sort is stable, there is never ** any reason to compare PK fields and they can be ignored for a small ** performance boost. @@ -90768,7 +102253,8 @@ SQLITE_PRIVATE int sqlite3VdbeSorterInit( } #endif - assert( pCsr->pKeyInfo && pCsr->pBtx==0 ); + assert( pCsr->pKeyInfo ); + assert( !pCsr->isEphemeral ); assert( pCsr->eCurType==CURTYPE_SORTER ); szKeyInfo = sizeof(KeyInfo) + (pCsr->pKeyInfo->nKeyField-1)*sizeof(CollSeq*); sz = sizeof(VdbeSorter) + nWorker * sizeof(SortSubtask); @@ -90778,13 +102264,16 @@ SQLITE_PRIVATE int sqlite3VdbeSorterInit( if( pSorter==0 ){ rc = SQLITE_NOMEM_BKPT; }else{ + Btree *pBt = db->aDb[0].pBt; pSorter->pKeyInfo = pKeyInfo = (KeyInfo*)((u8*)pSorter + sz); memcpy(pKeyInfo, pCsr->pKeyInfo, szKeyInfo); pKeyInfo->db = 0; if( nField && nWorker==0 ){ pKeyInfo->nKeyField = nField; } - pSorter->pgsz = pgsz = sqlite3BtreeGetPageSize(db->aDb[0].pBt); + sqlite3BtreeEnter(pBt); + pSorter->pgsz = pgsz = sqlite3BtreeGetPageSize(pBt); + sqlite3BtreeLeave(pBt); pSorter->nTask = nWorker + 1; pSorter->iPrev = (u8)(nWorker - 1); pSorter->bUseThreads = (pSorter->nTask>1); @@ -90820,8 +102309,9 @@ SQLITE_PRIVATE int sqlite3VdbeSorterInit( } } - if( pKeyInfo->nAllField<13 + if( pKeyInfo->nAllField<13 && (pKeyInfo->aColl[0]==0 || pKeyInfo->aColl[0]==db->pDfltColl) + && (pKeyInfo->aSortFlags[0] & KEYINFO_ORDER_BIGNULL)==0 ){ pSorter->typeMask = SORTER_TYPE_INTEGER | SORTER_TYPE_TEXT; } @@ -90844,7 +102334,7 @@ static void vdbeSorterRecordFree(sqlite3 *db, SorterRecord *pRecord){ } /* -** Free all resources owned by the object indicated by argument pTask. All +** Free all resources owned by the object indicated by argument pTask. All ** fields of *pTask are zeroed before returning. */ static void vdbeSortSubtaskCleanup(sqlite3 *db, SortSubtask *pTask){ @@ -90877,8 +102367,9 @@ static void vdbeSorterWorkDebug(SortSubtask *pTask, const char *zEvent){ fprintf(stderr, "%lld:%d %s\n", t, iTask, zEvent); } static void vdbeSorterRewindDebug(const char *zEvent){ - i64 t; - sqlite3OsCurrentTimeInt64(sqlite3_vfs_find(0), &t); + i64 t = 0; + sqlite3_vfs *pVfs = sqlite3_vfs_find(0); + if( ALWAYS(pVfs) ) sqlite3OsCurrentTimeInt64(pVfs, &t); fprintf(stderr, "%lld:X %s\n", t, zEvent); } static void vdbeSorterPopulateDebug( @@ -90943,7 +102434,7 @@ static int vdbeSorterCreateThread( } /* -** Join all outstanding threads launched by SorterWrite() to create +** Join all outstanding threads launched by SorterWrite() to create ** level-0 PMAs. */ static int vdbeSorterJoinAll(VdbeSorter *pSorter, int rcin){ @@ -90952,10 +102443,10 @@ static int vdbeSorterJoinAll(VdbeSorter *pSorter, int rcin){ /* This function is always called by the main user thread. ** - ** If this function is being called after SorterRewind() has been called, + ** If this function is being called after SorterRewind() has been called, ** it is possible that thread pSorter->aTask[pSorter->nTask-1].pThread ** is currently attempt to join one of the other threads. To avoid a race - ** condition where this thread also attempts to join the same object, join + ** condition where this thread also attempts to join the same object, join ** thread pSorter->aTask[pSorter->nTask-1].pThread first. */ for(i=pSorter->nTask-1; i>=0; i--){ SortSubtask *pTask = &pSorter->aTask[i]; @@ -91092,7 +102583,7 @@ static void vdbeSorterExtendFile(sqlite3 *db, sqlite3_file *pFd, i64 nByte){ sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_CHUNK_SIZE, &chunksize); sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_SIZE_HINT, &nByte); sqlite3OsFetch(pFd, 0, (int)nByte, &p); - sqlite3OsUnfetch(pFd, 0, p); + if( p ) sqlite3OsUnfetch(pFd, 0, p); } } #else @@ -91127,8 +102618,8 @@ static int vdbeSorterOpenTempFile( } /* -** If it has not already been allocated, allocate the UnpackedRecord -** structure at pTask->pUnpacked. Return SQLITE_OK if successful (or +** If it has not already been allocated, allocate the UnpackedRecord +** structure at pTask->pUnpacked. Return SQLITE_OK if successful (or ** if no allocation was required), or SQLITE_NOMEM otherwise. */ static int vdbeSortAllocUnpacked(SortSubtask *pTask){ @@ -91191,32 +102682,28 @@ static SorterCompare vdbeSorterGetCompare(VdbeSorter *p){ if( p->typeMask==SORTER_TYPE_INTEGER ){ return vdbeSorterCompareInt; }else if( p->typeMask==SORTER_TYPE_TEXT ){ - return vdbeSorterCompareText; + return vdbeSorterCompareText; } return vdbeSorterCompare; } /* -** Sort the linked list of records headed at pTask->pList. Return -** SQLITE_OK if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if +** Sort the linked list of records headed at pTask->pList. Return +** SQLITE_OK if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if ** an error occurs. */ static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){ int i; - SorterRecord **aSlot; SorterRecord *p; int rc; + SorterRecord *aSlot[64]; rc = vdbeSortAllocUnpacked(pTask); if( rc!=SQLITE_OK ) return rc; p = pList->pList; pTask->xCompare = vdbeSorterGetCompare(pTask->pSorter); - - aSlot = (SorterRecord **)sqlite3MallocZero(64 * sizeof(SorterRecord *)); - if( !aSlot ){ - return SQLITE_NOMEM_BKPT; - } + memset(aSlot, 0, sizeof(aSlot)); while( p ){ SorterRecord *pNext; @@ -91241,15 +102728,14 @@ static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){ } p = 0; - for(i=0; i<64; i++){ + for(i=0; ipList = p; - sqlite3_free(aSlot); - assert( pTask->pUnpacked->errCode==SQLITE_OK - || pTask->pUnpacked->errCode==SQLITE_NOMEM + assert( pTask->pUnpacked->errCode==SQLITE_OK + || pTask->pUnpacked->errCode==SQLITE_NOMEM ); return pTask->pUnpacked->errCode; } @@ -91290,8 +102776,8 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){ memcpy(&p->aBuffer[p->iBufEnd], &pData[nData-nRem], nCopy); p->iBufEnd += nCopy; if( p->iBufEnd==p->nBuffer ){ - p->eFWErr = sqlite3OsWrite(p->pFd, - &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, + p->eFWErr = sqlite3OsWrite(p->pFd, + &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, p->iWriteOff + p->iBufStart ); p->iBufStart = p->iBufEnd = 0; @@ -91306,7 +102792,7 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){ /* ** Flush any buffered data to disk and clean up the PMA-writer object. ** The results of using the PMA-writer after this call are undefined. -** Return SQLITE_OK if flushing the buffered data succeeds or is not +** Return SQLITE_OK if flushing the buffered data succeeds or is not ** required. Otherwise, return an SQLite error code. ** ** Before returning, set *piEof to the offset immediately following the @@ -91315,8 +102801,8 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){ static int vdbePmaWriterFinish(PmaWriter *p, i64 *piEof){ int rc; if( p->eFWErr==0 && ALWAYS(p->aBuffer) && p->iBufEnd>p->iBufStart ){ - p->eFWErr = sqlite3OsWrite(p->pFd, - &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, + p->eFWErr = sqlite3OsWrite(p->pFd, + &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, p->iWriteOff + p->iBufStart ); } @@ -91328,11 +102814,11 @@ static int vdbePmaWriterFinish(PmaWriter *p, i64 *piEof){ } /* -** Write value iVal encoded as a varint to the PMA. Return +** Write value iVal encoded as a varint to the PMA. Return ** SQLITE_OK if successful, or an SQLite error code if an error occurs. */ static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){ - int nByte; + int nByte; u8 aByte[10]; nByte = sqlite3PutVarint(aByte, iVal); vdbePmaWriteBlob(p, aByte, nByte); @@ -91340,7 +102826,7 @@ static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){ /* ** Write the current contents of in-memory linked-list pList to a level-0 -** PMA in the temp file belonging to sub-task pTask. Return SQLITE_OK if +** PMA in the temp file belonging to sub-task pTask. Return SQLITE_OK if ** successful, or an SQLite error code otherwise. ** ** The format of a PMA is: @@ -91348,8 +102834,8 @@ static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){ ** * A varint. This varint contains the total number of bytes of content ** in the PMA (not including the varint itself). ** -** * One or more records packed end-to-end in order of ascending keys. -** Each record consists of a varint followed by a blob of data (the +** * One or more records packed end-to-end in order of ascending keys. +** Each record consists of a varint followed by a blob of data (the ** key). The varint is the number of bytes in the blob of data. */ static int vdbeSorterListToPMA(SortSubtask *pTask, SorterList *pList){ @@ -91358,7 +102844,7 @@ static int vdbeSorterListToPMA(SortSubtask *pTask, SorterList *pList){ PmaWriter writer; /* Object used to write to the file */ #ifdef SQLITE_DEBUG - /* Set iSz to the expected size of file pTask->file after writing the PMA. + /* Set iSz to the expected size of file pTask->file after writing the PMA. ** This is used by an assert() statement at the end of this function. */ i64 iSz = pList->szPMA + sqlite3VarintLen(pList->szPMA) + pTask->file.iEof; #endif @@ -91511,7 +102997,7 @@ static int vdbeSorterFlushPMA(VdbeSorter *pSorter){ SortSubtask *pTask = 0; /* Thread context used to create new PMA */ int nWorker = (pSorter->nTask-1); - /* Set the flag to indicate that at least one PMA has been written. + /* Set the flag to indicate that at least one PMA has been written. ** Or will be, anyhow. */ pSorter->bUsePMA = 1; @@ -91521,7 +103007,7 @@ static int vdbeSorterFlushPMA(VdbeSorter *pSorter){ ** the background thread from a sub-tasks previous turn is still running, ** skip it. If the first (pSorter->nTask-1) sub-tasks are all still busy, ** fall back to using the final sub-task. The first (pSorter->nTask-1) - ** sub-tasks are prefered as they use background threads - the final + ** sub-tasks are preferred as they use background threads - the final ** sub-task uses the main thread. */ for(i=0; iiPrev + i + 1) % nWorker; @@ -91538,13 +103024,16 @@ static int vdbeSorterFlushPMA(VdbeSorter *pSorter){ rc = vdbeSorterListToPMA(&pSorter->aTask[nWorker], &pSorter->list); }else{ /* Launch a background thread for this operation */ - u8 *aMem = pTask->list.aMemory; - void *pCtx = (void*)pTask; + u8 *aMem; + void *pCtx; + assert( pTask!=0 ); assert( pTask->pThread==0 && pTask->bDone==0 ); assert( pTask->list.pList==0 ); assert( pTask->list.aMemory==0 || pSorter->list.aMemory!=0 ); + aMem = pTask->list.aMemory; + pCtx = (void*)pTask; pSorter->iPrev = (u8)(pTask - pSorter->aTask); pTask->list = pSorter->list; pSorter->list.pList = 0; @@ -91582,7 +103071,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite( assert( pCsr->eCurType==CURTYPE_SORTER ); pSorter = pCsr->uc.pSorter; - getVarint32((const u8*)&pVal->z[1], t); + getVarint32NR((const u8*)&pVal->z[1], t); if( t>0 && t<10 && t!=7 ){ pSorter->typeMask &= SORTER_TYPE_INTEGER; }else if( t>10 && (t & 0x01) ){ @@ -91599,14 +103088,14 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite( ** If using the single large allocation mode (pSorter->aMemory!=0), then ** flush the contents of memory to a new PMA if (a) at least one value is ** already in memory and (b) the new value will not fit in memory. - ** + ** ** Or, if using separate allocations for each record, flush the contents ** of memory to a PMA if either of the following are true: ** - ** * The total memory allocated for the in-memory list is greater + ** * The total memory allocated for the in-memory list is greater ** than (page-size * cache-size), or ** - ** * The total memory allocated for the in-memory list is greater + ** * The total memory allocated for the in-memory list is greater ** than (page-size * 10) and sqlite3HeapNearlyFull() returns true. */ nReq = pVal->n + sizeof(SorterRecord); @@ -91638,15 +103127,19 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite( if( nMin>pSorter->nMemory ){ u8 *aNew; - int iListOff = (u8*)pSorter->list.pList - pSorter->list.aMemory; - int nNew = pSorter->nMemory * 2; + sqlite3_int64 nNew = 2 * (sqlite3_int64)pSorter->nMemory; + int iListOff = -1; + if( pSorter->list.pList ){ + iListOff = (u8*)pSorter->list.pList - pSorter->list.aMemory; + } while( nNew < nMin ) nNew = nNew*2; if( nNew > pSorter->mxPmaSize ) nNew = pSorter->mxPmaSize; if( nNew < nMin ) nNew = nMin; - aNew = sqlite3Realloc(pSorter->list.aMemory, nNew); if( !aNew ) return SQLITE_NOMEM_BKPT; - pSorter->list.pList = (SorterRecord*)&aNew[iListOff]; + if( iListOff>=0 ){ + pSorter->list.pList = (SorterRecord*)&aNew[iListOff]; + } pSorter->list.aMemory = aNew; pSorter->nMemory = nNew; } @@ -91741,11 +103234,11 @@ static int vdbeIncrBgPopulate(IncrMerger *pIncr){ ** aFile[0] such that the PmaReader should start rereading it from the ** beginning. ** -** For single-threaded objects, this is accomplished by literally reading -** keys from pIncr->pMerger and repopulating aFile[0]. +** For single-threaded objects, this is accomplished by literally reading +** keys from pIncr->pMerger and repopulating aFile[0]. ** -** For multi-threaded objects, all that is required is to wait until the -** background thread is finished (if it is not already) and then swap +** For multi-threaded objects, all that is required is to wait until the +** background thread is finished (if it is not already) and then swap ** aFile[0] and aFile[1] in place. If the contents of pMerger have not ** been exhausted, this function also launches a new background thread ** to populate the new aFile[1]. @@ -91808,6 +103301,7 @@ static int vdbeIncrMergerNew( vdbeMergeEngineFree(pMerger); rc = SQLITE_NOMEM_BKPT; } + assert( *ppOut!=0 || rc!=SQLITE_OK ); return rc; } @@ -91885,7 +103379,7 @@ static void vdbeMergeEngineCompare( #define INCRINIT_TASK 1 #define INCRINIT_ROOT 2 -/* +/* ** Forward reference required as the vdbeIncrMergeInit() and ** vdbePmaReaderIncrInit() routines are called mutually recursively when ** building a merge tree. @@ -91894,7 +103388,7 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode); /* ** Initialize the MergeEngine object passed as the second argument. Once this -** function returns, the first key of merged data may be read from the +** function returns, the first key of merged data may be read from the ** MergeEngine object in the usual fashion. ** ** If argument eMode is INCRINIT_ROOT, then it is assumed that any IncrMerge @@ -91904,8 +103398,8 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode); ** required is to call vdbePmaReaderNext() on each PmaReader to point it at ** its first key. ** -** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use -** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data +** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use +** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data ** to pMerger. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. @@ -91917,7 +103411,11 @@ static int vdbeMergeEngineInit( ){ int rc = SQLITE_OK; /* Return code */ int i; /* For looping over PmaReader objects */ - int nTree = pMerger->nTree; + int nTree; /* Number of subtrees to merge */ + + /* Failure to allocate the merge would have been detected prior to + ** invoking this routine */ + assert( pMerger!=0 ); /* eMode is always INCRINIT_NORMAL in single-threaded mode */ assert( SQLITE_MAX_WORKER_THREADS>0 || eMode==INCRINIT_NORMAL ); @@ -91926,6 +103424,7 @@ static int vdbeMergeEngineInit( assert( pMerger->pTask==0 ); pMerger->pTask = pTask; + nTree = pMerger->nTree; for(i=0; i0 && eMode==INCRINIT_ROOT ){ /* PmaReaders should be normally initialized in order, as if they are @@ -91955,19 +103454,19 @@ static int vdbeMergeEngineInit( ** object at (pReadr->pIncr). ** ** If argument eMode is set to INCRINIT_NORMAL, then all PmaReaders -** in the sub-tree headed by pReadr are also initialized. Data is then -** loaded into the buffers belonging to pReadr and it is set to point to +** in the sub-tree headed by pReadr are also initialized. Data is then +** loaded into the buffers belonging to pReadr and it is set to point to ** the first key in its range. ** ** If argument eMode is set to INCRINIT_TASK, then pReadr is guaranteed ** to be a multi-threaded PmaReader and this function is being called in a -** background thread. In this case all PmaReaders in the sub-tree are +** background thread. In this case all PmaReaders in the sub-tree are ** initialized as for INCRINIT_NORMAL and the aFile[1] buffer belonging to ** pReadr is populated. However, pReadr itself is not set up to point ** to its first key. A call to vdbePmaReaderNext() is still required to do -** that. +** that. ** -** The reason this function does not call vdbePmaReaderNext() immediately +** The reason this function does not call vdbePmaReaderNext() immediately ** in the INCRINIT_TASK case is that vdbePmaReaderNext() assumes that it has ** to block on thread (pTask->thread) before accessing aFile[1]. But, since ** this entire function is being run by thread (pTask->thread), that will @@ -91992,7 +103491,7 @@ static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){ rc = vdbeMergeEngineInit(pTask, pIncr->pMerger, eMode); - /* Set up the required files for pIncr. A multi-theaded IncrMerge object + /* Set up the required files for pIncr. A multi-threaded IncrMerge object ** requires two temp files to itself, whereas a single-threaded object ** only requires a region of pTask->file2. */ if( rc==SQLITE_OK ){ @@ -92023,12 +103522,12 @@ static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){ if( rc==SQLITE_OK && pIncr->bUseThread ){ /* Use the current thread to populate aFile[1], even though this ** PmaReader is multi-threaded. If this is an INCRINIT_TASK object, - ** then this function is already running in background thread - ** pIncr->pTask->thread. + ** then this function is already running in background thread + ** pIncr->pTask->thread. ** - ** If this is the INCRINIT_ROOT object, then it is running in the + ** If this is the INCRINIT_ROOT object, then it is running in the ** main VDBE thread. But that is Ok, as that thread cannot return - ** control to the VDBE or proceed with anything useful until the + ** control to the VDBE or proceed with anything useful until the ** first results are ready from this merger object anyway. */ assert( eMode==INCRINIT_ROOT || eMode==INCRINIT_TASK ); @@ -92045,7 +103544,7 @@ static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){ #if SQLITE_MAX_WORKER_THREADS>0 /* -** The main routine for vdbePmaReaderIncrMergeInit() operations run in +** The main routine for vdbePmaReaderIncrMergeInit() operations run in ** background threads. */ static void *vdbePmaReaderBgIncrInit(void *pCtx){ @@ -92063,8 +103562,8 @@ static void *vdbePmaReaderBgIncrInit(void *pCtx){ ** (if pReadr->pIncr==0), then this function is a no-op. Otherwise, it invokes ** the vdbePmaReaderIncrMergeInit() function with the parameters passed to ** this routine to initialize the incremental merge. -** -** If the IncrMerger object is multi-threaded (IncrMerger.bUseThread==1), +** +** If the IncrMerger object is multi-threaded (IncrMerger.bUseThread==1), ** then a background thread is launched to call vdbePmaReaderIncrMergeInit(). ** Or, if the IncrMerger is single threaded, the same function is called ** using the current thread. @@ -92094,7 +103593,7 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode){ ** to NULL and return an SQLite error code. ** ** When this function is called, *piOffset is set to the offset of the -** first PMA to read from pTask->file. Assuming no error occurs, it is +** first PMA to read from pTask->file. Assuming no error occurs, it is ** set to the offset immediately following the last byte of the last ** PMA before returning. If an error does occur, then the final value of ** *piOffset is undefined. @@ -92204,12 +103703,12 @@ static int vdbeSorterAddToTree( /* ** This function is called as part of a SorterRewind() operation on a sorter ** that has already written two or more level-0 PMAs to one or more temp -** files. It builds a tree of MergeEngine/IncrMerger/PmaReader objects that +** files. It builds a tree of MergeEngine/IncrMerger/PmaReader objects that ** can be used to incrementally merge all PMAs on disk. ** ** If successful, SQLITE_OK is returned and *ppOut set to point to the ** MergeEngine object at the root of the tree before returning. Or, if an -** error occurs, an SQLite error code is returned and the final value +** error occurs, an SQLite error code is returned and the final value ** of *ppOut is undefined. */ static int vdbeSorterMergeTreeBuild( @@ -92221,8 +103720,8 @@ static int vdbeSorterMergeTreeBuild( int iTask; #if SQLITE_MAX_WORKER_THREADS>0 - /* If the sorter uses more than one task, then create the top-level - ** MergeEngine here. This MergeEngine will read data from exactly + /* If the sorter uses more than one task, then create the top-level + ** MergeEngine here. This MergeEngine will read data from exactly ** one PmaReader per sub-task. */ assert( pSorter->bUseThreads || pSorter->nTask==1 ); if( pSorter->nTask>1 ){ @@ -92331,7 +103830,7 @@ static int vdbeSorterSetupMerge(VdbeSorter *pSorter){ } for(iTask=0; rc==SQLITE_OK && iTasknTask; iTask++){ /* Check that: - ** + ** ** a) The incremental merge object is configured to use the ** right task, and ** b) If it is using task (nTask-1), it is configured to run @@ -92394,7 +103893,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *pCsr, int *pbEof){ return rc; } - /* Write the current in-memory list to a PMA. When the VdbeSorterWrite() + /* Write the current in-memory list to a PMA. When the VdbeSorterWrite() ** function flushes the contents of memory to disk, it immediately always ** creates a new list consisting of a single key immediately afterwards. ** So the list is never empty at this point. */ @@ -92406,7 +103905,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *pCsr, int *pbEof){ vdbeSorterRewindDebug("rewind"); - /* Assuming no errors have occurred, set up a merger structure to + /* Assuming no errors have occurred, set up a merger structure to ** incrementally read and merge all remaining PMAs. */ assert( pSorter->pReader==0 ); if( rc==SQLITE_OK ){ @@ -92460,7 +103959,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *db, const VdbeCursor *pCsr){ } /* -** Return a pointer to a buffer owned by the sorter that contains the +** Return a pointer to a buffer owned by the sorter that contains the ** current key. */ static void *vdbeSorterRowkey( @@ -92560,6 +104059,454 @@ SQLITE_PRIVATE int sqlite3VdbeSorterCompare( } /************** End of vdbesort.c ********************************************/ +/************** Begin file vdbevtab.c ****************************************/ +/* +** 2020-03-23 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file implements virtual-tables for examining the bytecode content +** of a prepared statement. +*/ +/* #include "sqliteInt.h" */ +#if defined(SQLITE_ENABLE_BYTECODE_VTAB) && !defined(SQLITE_OMIT_VIRTUALTABLE) +/* #include "vdbeInt.h" */ + +/* An instance of the bytecode() table-valued function. +*/ +typedef struct bytecodevtab bytecodevtab; +struct bytecodevtab { + sqlite3_vtab base; /* Base class - must be first */ + sqlite3 *db; /* Database connection */ + int bTablesUsed; /* 2 for tables_used(). 0 for bytecode(). */ +}; + +/* A cursor for scanning through the bytecode +*/ +typedef struct bytecodevtab_cursor bytecodevtab_cursor; +struct bytecodevtab_cursor { + sqlite3_vtab_cursor base; /* Base class - must be first */ + sqlite3_stmt *pStmt; /* The statement whose bytecode is displayed */ + int iRowid; /* The rowid of the output table */ + int iAddr; /* Address */ + int needFinalize; /* Cursors owns pStmt and must finalize it */ + int showSubprograms; /* Provide a listing of subprograms */ + Op *aOp; /* Operand array */ + char *zP4; /* Rendered P4 value */ + const char *zType; /* tables_used.type */ + const char *zSchema; /* tables_used.schema */ + const char *zName; /* tables_used.name */ + Mem sub; /* Subprograms */ +}; + +/* +** Create a new bytecode() table-valued function. +*/ +static int bytecodevtabConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + bytecodevtab *pNew; + int rc; + int isTabUsed = pAux!=0; + const char *azSchema[2] = { + /* bytecode() schema */ + "CREATE TABLE x(" + "addr INT," + "opcode TEXT," + "p1 INT," + "p2 INT," + "p3 INT," + "p4 TEXT," + "p5 INT," + "comment TEXT," + "subprog TEXT," + "nexec INT," + "ncycle INT," + "stmt HIDDEN" + ");", + + /* Tables_used() schema */ + "CREATE TABLE x(" + "type TEXT," + "schema TEXT," + "name TEXT," + "wr INT," + "subprog TEXT," + "stmt HIDDEN" + ");" + }; + + (void)argc; + (void)argv; + (void)pzErr; + rc = sqlite3_declare_vtab(db, azSchema[isTabUsed]); + if( rc==SQLITE_OK ){ + pNew = sqlite3_malloc( sizeof(*pNew) ); + *ppVtab = (sqlite3_vtab*)pNew; + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(*pNew)); + pNew->db = db; + pNew->bTablesUsed = isTabUsed*2; + } + return rc; +} + +/* +** This method is the destructor for bytecodevtab objects. +*/ +static int bytecodevtabDisconnect(sqlite3_vtab *pVtab){ + bytecodevtab *p = (bytecodevtab*)pVtab; + sqlite3_free(p); + return SQLITE_OK; +} + +/* +** Constructor for a new bytecodevtab_cursor object. +*/ +static int bytecodevtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + bytecodevtab *pVTab = (bytecodevtab*)p; + bytecodevtab_cursor *pCur; + pCur = sqlite3_malloc( sizeof(*pCur) ); + if( pCur==0 ) return SQLITE_NOMEM; + memset(pCur, 0, sizeof(*pCur)); + sqlite3VdbeMemInit(&pCur->sub, pVTab->db, 1); + *ppCursor = &pCur->base; + return SQLITE_OK; +} + +/* +** Clear all internal content from a bytecodevtab cursor. +*/ +static void bytecodevtabCursorClear(bytecodevtab_cursor *pCur){ + sqlite3_free(pCur->zP4); + pCur->zP4 = 0; + sqlite3VdbeMemRelease(&pCur->sub); + sqlite3VdbeMemSetNull(&pCur->sub); + if( pCur->needFinalize ){ + sqlite3_finalize(pCur->pStmt); + } + pCur->pStmt = 0; + pCur->needFinalize = 0; + pCur->zType = 0; + pCur->zSchema = 0; + pCur->zName = 0; +} + +/* +** Destructor for a bytecodevtab_cursor. +*/ +static int bytecodevtabClose(sqlite3_vtab_cursor *cur){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur; + bytecodevtabCursorClear(pCur); + sqlite3_free(pCur); + return SQLITE_OK; +} + + +/* +** Advance a bytecodevtab_cursor to its next row of output. +*/ +static int bytecodevtabNext(sqlite3_vtab_cursor *cur){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur; + bytecodevtab *pTab = (bytecodevtab*)cur->pVtab; + int rc; + if( pCur->zP4 ){ + sqlite3_free(pCur->zP4); + pCur->zP4 = 0; + } + if( pCur->zName ){ + pCur->zName = 0; + pCur->zType = 0; + pCur->zSchema = 0; + } + rc = sqlite3VdbeNextOpcode( + (Vdbe*)pCur->pStmt, + pCur->showSubprograms ? &pCur->sub : 0, + pTab->bTablesUsed, + &pCur->iRowid, + &pCur->iAddr, + &pCur->aOp); + if( rc!=SQLITE_OK ){ + sqlite3VdbeMemSetNull(&pCur->sub); + pCur->aOp = 0; + } + return SQLITE_OK; +} + +/* +** Return TRUE if the cursor has been moved off of the last +** row of output. +*/ +static int bytecodevtabEof(sqlite3_vtab_cursor *cur){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur; + return pCur->aOp==0; +} + +/* +** Return values of columns for the row at which the bytecodevtab_cursor +** is currently pointing. +*/ +static int bytecodevtabColumn( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur; + bytecodevtab *pVTab = (bytecodevtab*)cur->pVtab; + Op *pOp = pCur->aOp + pCur->iAddr; + if( pVTab->bTablesUsed ){ + if( i==4 ){ + i = 8; + }else{ + if( i<=2 && pCur->zType==0 ){ + Schema *pSchema; + HashElem *k; + int iDb = pOp->p3; + Pgno iRoot = (Pgno)pOp->p2; + sqlite3 *db = pVTab->db; + pSchema = db->aDb[iDb].pSchema; + pCur->zSchema = db->aDb[iDb].zDbSName; + for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){ + Table *pTab = (Table*)sqliteHashData(k); + if( !IsVirtual(pTab) && pTab->tnum==iRoot ){ + pCur->zName = pTab->zName; + pCur->zType = "table"; + break; + } + } + if( pCur->zName==0 ){ + for(k=sqliteHashFirst(&pSchema->idxHash); k; k=sqliteHashNext(k)){ + Index *pIdx = (Index*)sqliteHashData(k); + if( pIdx->tnum==iRoot ){ + pCur->zName = pIdx->zName; + pCur->zType = "index"; + } + } + } + } + i += 20; + } + } + switch( i ){ + case 0: /* addr */ + sqlite3_result_int(ctx, pCur->iAddr); + break; + case 1: /* opcode */ + sqlite3_result_text(ctx, (char*)sqlite3OpcodeName(pOp->opcode), + -1, SQLITE_STATIC); + break; + case 2: /* p1 */ + sqlite3_result_int(ctx, pOp->p1); + break; + case 3: /* p2 */ + sqlite3_result_int(ctx, pOp->p2); + break; + case 4: /* p3 */ + sqlite3_result_int(ctx, pOp->p3); + break; + case 5: /* p4 */ + case 7: /* comment */ + if( pCur->zP4==0 ){ + pCur->zP4 = sqlite3VdbeDisplayP4(pVTab->db, pOp); + } + if( i==5 ){ + sqlite3_result_text(ctx, pCur->zP4, -1, SQLITE_STATIC); + }else{ +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + char *zCom = sqlite3VdbeDisplayComment(pVTab->db, pOp, pCur->zP4); + sqlite3_result_text(ctx, zCom, -1, sqlite3_free); +#endif + } + break; + case 6: /* p5 */ + sqlite3_result_int(ctx, pOp->p5); + break; + case 8: { /* subprog */ + Op *aOp = pCur->aOp; + assert( aOp[0].opcode==OP_Init ); + assert( aOp[0].p4.z==0 || strncmp(aOp[0].p4.z,"-" "- ",3)==0 ); + if( pCur->iRowid==pCur->iAddr+1 ){ + break; /* Result is NULL for the main program */ + }else if( aOp[0].p4.z!=0 ){ + sqlite3_result_text(ctx, aOp[0].p4.z+3, -1, SQLITE_STATIC); + }else{ + sqlite3_result_text(ctx, "(FK)", 4, SQLITE_STATIC); + } + break; + } + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + case 9: /* nexec */ + sqlite3_result_int(ctx, pOp->nExec); + break; + case 10: /* ncycle */ + sqlite3_result_int(ctx, pOp->nCycle); + break; +#else + case 9: /* nexec */ + case 10: /* ncycle */ + sqlite3_result_int(ctx, 0); + break; +#endif + + case 20: /* tables_used.type */ + sqlite3_result_text(ctx, pCur->zType, -1, SQLITE_STATIC); + break; + case 21: /* tables_used.schema */ + sqlite3_result_text(ctx, pCur->zSchema, -1, SQLITE_STATIC); + break; + case 22: /* tables_used.name */ + sqlite3_result_text(ctx, pCur->zName, -1, SQLITE_STATIC); + break; + case 23: /* tables_used.wr */ + sqlite3_result_int(ctx, pOp->opcode==OP_OpenWrite); + break; + } + return SQLITE_OK; +} + +/* +** Return the rowid for the current row. In this implementation, the +** rowid is the same as the output value. +*/ +static int bytecodevtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur; + *pRowid = pCur->iRowid; + return SQLITE_OK; +} + +/* +** Initialize a cursor. +** +** idxNum==0 means show all subprograms +** idxNum==1 means show only the main bytecode and omit subprograms. +*/ +static int bytecodevtabFilter( + sqlite3_vtab_cursor *pVtabCursor, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + bytecodevtab_cursor *pCur = (bytecodevtab_cursor *)pVtabCursor; + bytecodevtab *pVTab = (bytecodevtab *)pVtabCursor->pVtab; + int rc = SQLITE_OK; + (void)idxStr; + + bytecodevtabCursorClear(pCur); + pCur->iRowid = 0; + pCur->iAddr = 0; + pCur->showSubprograms = idxNum==0; + assert( argc==1 ); + if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){ + const char *zSql = (const char*)sqlite3_value_text(argv[0]); + if( zSql==0 ){ + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(pVTab->db, zSql, -1, &pCur->pStmt, 0); + pCur->needFinalize = 1; + } + }else{ + pCur->pStmt = (sqlite3_stmt*)sqlite3_value_pointer(argv[0],"stmt-pointer"); + } + if( pCur->pStmt==0 ){ + pVTab->base.zErrMsg = sqlite3_mprintf( + "argument to %s() is not a valid SQL statement", + pVTab->bTablesUsed ? "tables_used" : "bytecode" + ); + rc = SQLITE_ERROR; + }else{ + bytecodevtabNext(pVtabCursor); + } + return rc; +} + +/* +** We must have a single stmt=? constraint that will be passed through +** into the xFilter method. If there is no valid stmt=? constraint, +** then return an SQLITE_CONSTRAINT error. +*/ +static int bytecodevtabBestIndex( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; + int rc = SQLITE_CONSTRAINT; + struct sqlite3_index_constraint *p; + bytecodevtab *pVTab = (bytecodevtab*)tab; + int iBaseCol = pVTab->bTablesUsed ? 4 : 10; + pIdxInfo->estimatedCost = (double)100; + pIdxInfo->estimatedRows = 100; + pIdxInfo->idxNum = 0; + for(i=0, p=pIdxInfo->aConstraint; inConstraint; i++, p++){ + if( p->usable==0 ) continue; + if( p->op==SQLITE_INDEX_CONSTRAINT_EQ && p->iColumn==iBaseCol+1 ){ + rc = SQLITE_OK; + pIdxInfo->aConstraintUsage[i].omit = 1; + pIdxInfo->aConstraintUsage[i].argvIndex = 1; + } + if( p->op==SQLITE_INDEX_CONSTRAINT_ISNULL && p->iColumn==iBaseCol ){ + pIdxInfo->aConstraintUsage[i].omit = 1; + pIdxInfo->idxNum = 1; + } + } + return rc; +} + +/* +** This following structure defines all the methods for the +** virtual table. +*/ +static sqlite3_module bytecodevtabModule = { + /* iVersion */ 0, + /* xCreate */ 0, + /* xConnect */ bytecodevtabConnect, + /* xBestIndex */ bytecodevtabBestIndex, + /* xDisconnect */ bytecodevtabDisconnect, + /* xDestroy */ 0, + /* xOpen */ bytecodevtabOpen, + /* xClose */ bytecodevtabClose, + /* xFilter */ bytecodevtabFilter, + /* xNext */ bytecodevtabNext, + /* xEof */ bytecodevtabEof, + /* xColumn */ bytecodevtabColumn, + /* xRowid */ bytecodevtabRowid, + /* xUpdate */ 0, + /* xBegin */ 0, + /* xSync */ 0, + /* xCommit */ 0, + /* xRollback */ 0, + /* xFindMethod */ 0, + /* xRename */ 0, + /* xSavepoint */ 0, + /* xRelease */ 0, + /* xRollbackTo */ 0, + /* xShadowName */ 0 +}; + + +SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){ + int rc; + rc = sqlite3_create_module(db, "bytecode", &bytecodevtabModule, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_module(db, "tables_used", &bytecodevtabModule, &db); + } + return rc; +} +#elif defined(SQLITE_ENABLE_BYTECODE_VTAB) +SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){ return SQLITE_OK; } +#endif /* SQLITE_ENABLE_BYTECODE_VTAB */ + +/************** End of vdbevtab.c ********************************************/ /************** Begin file memjournal.c **************************************/ /* ** 2008 October 7 @@ -92633,7 +104580,6 @@ struct MemJournal { int nChunkSize; /* In-memory chunk-size */ int nSpill; /* Bytes of data before flushing */ - int nSize; /* Bytes of data currently in memory */ FileChunk *pFirst; /* Head of in-memory chunk-list */ FilePoint endpoint; /* Pointer to the end of the file */ FilePoint readpoint; /* Pointer to the end of the last xRead() */ @@ -92659,18 +104605,13 @@ static int memjrnlRead( int iChunkOffset; FileChunk *pChunk; -#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \ - || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) if( (iAmt+iOfst)>p->endpoint.iOffset ){ return SQLITE_IOERR_SHORT_READ; } -#endif - - assert( (iAmt+iOfst)<=p->endpoint.iOffset ); assert( p->readpoint.iOffset==0 || p->readpoint.pChunk!=0 ); if( p->readpoint.iOffset!=iOfst || iOfst==0 ){ sqlite3_int64 iOff = 0; - for(pChunk=p->pFirst; + for(pChunk=p->pFirst; ALWAYS(pChunk) && (iOff+p->nChunkSize)<=iOfst; pChunk=pChunk->pNext ){ @@ -92699,14 +104640,13 @@ static int memjrnlRead( /* ** Free the list of FileChunk structures headed at MemJournal.pFirst. */ -static void memjrnlFreeChunks(MemJournal *p){ +static void memjrnlFreeChunks(FileChunk *pFirst){ FileChunk *pIter; FileChunk *pNext; - for(pIter=p->pFirst; pIter; pIter=pNext){ + for(pIter=pFirst; pIter; pIter=pNext){ pNext = pIter->pNext; sqlite3_free(pIter); - } - p->pFirst = 0; + } } /* @@ -92733,7 +104673,7 @@ static int memjrnlCreateFile(MemJournal *p){ } if( rc==SQLITE_OK ){ /* No error has occurred. Free the in-memory buffers. */ - memjrnlFreeChunks(©); + memjrnlFreeChunks(copy.pFirst); } } if( rc!=SQLITE_OK ){ @@ -92748,6 +104688,9 @@ static int memjrnlCreateFile(MemJournal *p){ } +/* Forward reference */ +static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size); + /* ** Write data to the file. */ @@ -92777,23 +104720,21 @@ static int memjrnlWrite( ** access writes are not required. The only exception to this is when ** the in-memory journal is being used by a connection using the ** atomic-write optimization. In this case the first 28 bytes of the - ** journal file may be written as part of committing the transaction. */ - assert( iOfst==p->endpoint.iOffset || iOfst==0 ); -#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \ - || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) + ** journal file may be written as part of committing the transaction. */ + assert( iOfst<=p->endpoint.iOffset ); + if( iOfst>0 && iOfst!=p->endpoint.iOffset ){ + memjrnlTruncate(pJfd, iOfst); + } if( iOfst==0 && p->pFirst ){ assert( p->nChunkSize>iAmt ); memcpy((u8*)p->pFirst->zChunk, zBuf, iAmt); - }else -#else - assert( iOfst>0 || p->pFirst==0 ); -#endif - { + }else{ while( nWrite>0 ){ FileChunk *pChunk = p->endpoint.pChunk; int iChunkOffset = (int)(p->endpoint.iOffset%p->nChunkSize); int iSpace = MIN(nWrite, p->nChunkSize - iChunkOffset); + assert( pChunk!=0 || iChunkOffset==0 ); if( iChunkOffset==0 ){ /* New chunk is required to extend the file. */ FileChunk *pNew = sqlite3_malloc(fileChunkSize(p->nChunkSize)); @@ -92808,15 +104749,15 @@ static int memjrnlWrite( assert( !p->pFirst ); p->pFirst = pNew; } - p->endpoint.pChunk = pNew; + pChunk = p->endpoint.pChunk = pNew; } - memcpy((u8*)p->endpoint.pChunk->zChunk + iChunkOffset, zWrite, iSpace); + assert( pChunk!=0 ); + memcpy((u8*)pChunk->zChunk + iChunkOffset, zWrite, iSpace); zWrite += iSpace; nWrite -= iSpace; p->endpoint.iOffset += iSpace; } - p->nSize = iAmt + iOfst; } } @@ -92824,19 +104765,29 @@ static int memjrnlWrite( } /* -** Truncate the file. -** -** If the journal file is already on disk, truncate it there. Or, if it -** is still in main memory but is being truncated to zero bytes in size, -** ignore +** Truncate the in-memory file. */ static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ MemJournal *p = (MemJournal *)pJfd; - if( ALWAYS(size==0) ){ - memjrnlFreeChunks(p); - p->nSize = 0; - p->endpoint.pChunk = 0; - p->endpoint.iOffset = 0; + assert( p->endpoint.pChunk==0 || p->endpoint.pChunk->pNext==0 ); + if( sizeendpoint.iOffset ){ + FileChunk *pIter = 0; + if( size==0 ){ + memjrnlFreeChunks(p->pFirst); + p->pFirst = 0; + }else{ + i64 iOff = p->nChunkSize; + for(pIter=p->pFirst; ALWAYS(pIter) && iOffpNext){ + iOff += p->nChunkSize; + } + if( ALWAYS(pIter) ){ + memjrnlFreeChunks(pIter->pNext); + pIter->pNext = 0; + } + } + + p->endpoint.pChunk = pIter; + p->endpoint.iOffset = size; p->readpoint.pChunk = 0; p->readpoint.iOffset = 0; } @@ -92848,15 +104799,15 @@ static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ */ static int memjrnlClose(sqlite3_file *pJfd){ MemJournal *p = (MemJournal *)pJfd; - memjrnlFreeChunks(p); + memjrnlFreeChunks(p->pFirst); return SQLITE_OK; } /* ** Sync the file. ** -** If the real file has been created, call its xSync method. Otherwise, -** syncing an in-memory journal is a no-op. +** If the real file has been created, call its xSync method. Otherwise, +** syncing an in-memory journal is a no-op. */ static int memjrnlSync(sqlite3_file *pJfd, int flags){ UNUSED_PARAMETER2(pJfd, flags); @@ -92897,11 +104848,11 @@ static const struct sqlite3_io_methods MemJournalMethods = { 0 /* xUnfetch */ }; -/* -** Open a journal file. +/* +** Open a journal file. ** -** The behaviour of the journal file depends on the value of parameter -** nSpill. If nSpill is 0, then the journal file is always create and +** The behaviour of the journal file depends on the value of parameter +** nSpill. If nSpill is 0, then the journal file is always create and ** accessed using the underlying VFS. If nSpill is less than zero, then ** all content is always stored in main-memory. Finally, if nSpill is a ** positive value, then the journal file is initially created in-memory @@ -92918,6 +104869,8 @@ SQLITE_PRIVATE int sqlite3JournalOpen( ){ MemJournal *p = (MemJournal*)pJfd; + assert( zName || nSpill<0 || (flags & SQLITE_OPEN_EXCLUSIVE) ); + /* Zero the file-handle object. If nSpill was passed zero, initialize ** it using the sqlite3OsOpen() function of the underlying VFS. In this ** case none of the code in this module is executed as a result of calls @@ -92934,7 +104887,7 @@ SQLITE_PRIVATE int sqlite3JournalOpen( assert( MEMJOURNAL_DFLT_FILECHUNKSIZE==fileChunkSize(p->nChunkSize) ); } - p->pMethod = (const sqlite3_io_methods*)&MemJournalMethods; + pJfd->pMethods = (const sqlite3_io_methods*)&MemJournalMethods; p->nSpill = nSpill; p->flags = flags; p->zJournal = zName; @@ -92952,15 +104905,15 @@ SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *pJfd){ #if defined(SQLITE_ENABLE_ATOMIC_WRITE) \ || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) /* -** If the argument p points to a MemJournal structure that is not an +** If the argument p points to a MemJournal structure that is not an ** in-memory-only journal file (i.e. is one that was opened with a +ve -** nSpill parameter or as SQLITE_OPEN_MAIN_JOURNAL), and the underlying +** nSpill parameter or as SQLITE_OPEN_MAIN_JOURNAL), and the underlying ** file has not yet been created, create it now. */ SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *pJfd){ int rc = SQLITE_OK; MemJournal *p = (MemJournal*)pJfd; - if( p->pMethod==&MemJournalMethods && ( + if( pJfd->pMethods==&MemJournalMethods && ( #ifdef SQLITE_ENABLE_ATOMIC_WRITE p->nSpill>0 #else @@ -92988,7 +104941,7 @@ SQLITE_PRIVATE int sqlite3JournalIsInMemory(sqlite3_file *p){ return p->pMethods==&MemJournalMethods; } -/* +/* ** Return the number of bytes required to store a JournalFile that uses vfs ** pVfs to create the underlying on-disk files. */ @@ -93017,6 +104970,31 @@ SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *pVfs){ /* #include */ +#if !defined(SQLITE_OMIT_WINDOWFUNC) +/* +** Walk all expressions linked into the list of Window objects passed +** as the second argument. +*/ +static int walkWindowList(Walker *pWalker, Window *pList, int bOneOnly){ + Window *pWin; + for(pWin=pList; pWin; pWin=pWin->pNextWin){ + int rc; + rc = sqlite3WalkExprList(pWalker, pWin->pOrderBy); + if( rc ) return WRC_Abort; + rc = sqlite3WalkExprList(pWalker, pWin->pPartition); + if( rc ) return WRC_Abort; + rc = sqlite3WalkExpr(pWalker, pWin->pFilter); + if( rc ) return WRC_Abort; + rc = sqlite3WalkExpr(pWalker, pWin->pStart); + if( rc ) return WRC_Abort; + rc = sqlite3WalkExpr(pWalker, pWin->pEnd); + if( rc ) return WRC_Abort; + if( bOneOnly ) break; + } + return WRC_Continue; +} +#endif + /* ** Walk an expression tree. Invoke the callback once for each node ** of the expression, while descending. (In other words, the callback @@ -93036,7 +105014,7 @@ SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *pVfs){ ** The return value from this routine is WRC_Abort to abandon the tree walk ** and WRC_Continue to continue. */ -static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ +SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3WalkExprNN(Walker *pWalker, Expr *pExpr){ int rc; testcase( ExprHasProperty(pExpr, EP_TokenOnly) ); testcase( ExprHasProperty(pExpr, EP_Reduced) ); @@ -93044,15 +105022,26 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ rc = pWalker->xExprCallback(pWalker, pExpr); if( rc ) return rc & WRC_Abort; if( !ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){ - if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort; - assert( pExpr->x.pList==0 || pExpr->pRight==0 ); + assert( pExpr->x.pList==0 || pExpr->pRight==0 ); + if( pExpr->pLeft && sqlite3WalkExprNN(pWalker, pExpr->pLeft) ){ + return WRC_Abort; + } if( pExpr->pRight ){ + assert( !ExprHasProperty(pExpr, EP_WinFunc) ); pExpr = pExpr->pRight; continue; - }else if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + }else if( ExprUseXSelect(pExpr) ){ + assert( !ExprHasProperty(pExpr, EP_WinFunc) ); if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort; - }else if( pExpr->x.pList ){ - if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort; + }else{ + if( pExpr->x.pList ){ + if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort; + } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + if( walkWindowList(pWalker, pExpr->y.pWin, 1) ) return WRC_Abort; + } +#endif } } break; @@ -93060,7 +105049,7 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ return WRC_Continue; } SQLITE_PRIVATE int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){ - return pExpr ? walkExpr(pWalker,pExpr) : WRC_Continue; + return pExpr ? sqlite3WalkExprNN(pWalker,pExpr) : WRC_Continue; } /* @@ -93078,6 +105067,16 @@ SQLITE_PRIVATE int sqlite3WalkExprList(Walker *pWalker, ExprList *p){ return WRC_Continue; } +/* +** This is a no-op callback for Walker->xSelectCallback2. If this +** callback is set, then the Select->pWinDefn list is traversed. +*/ +SQLITE_PRIVATE void sqlite3WalkWinDefnDummyCallback(Walker *pWalker, Select *p){ + UNUSED_PARAMETER(pWalker); + UNUSED_PARAMETER(p); + /* No-op */ +} + /* ** Walk all expressions associated with SELECT statement p. Do ** not invoke the SELECT callback on p, but do (of course) invoke @@ -93091,6 +105090,22 @@ SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker *pWalker, Select *p){ if( sqlite3WalkExpr(pWalker, p->pHaving) ) return WRC_Abort; if( sqlite3WalkExprList(pWalker, p->pOrderBy) ) return WRC_Abort; if( sqlite3WalkExpr(pWalker, p->pLimit) ) return WRC_Abort; +#if !defined(SQLITE_OMIT_WINDOWFUNC) + if( p->pWinDefn ){ + Parse *pParse; + if( pWalker->xSelectCallback2==sqlite3WalkWinDefnDummyCallback + || ((pParse = pWalker->pParse)!=0 && IN_RENAME_OBJECT) +#ifndef SQLITE_OMIT_CTE + || pWalker->xSelectCallback2==sqlite3SelectPopWith +#endif + ){ + /* The following may return WRC_Abort if there are unresolvable + ** symbols (e.g. a table that does not exist) in a window definition. */ + int rc = walkWindowList(pWalker, p->pWinDefn, 0); + return rc; + } + } +#endif return WRC_Continue; } @@ -93098,33 +105113,34 @@ SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker *pWalker, Select *p){ ** Walk the parse trees associated with all subqueries in the ** FROM clause of SELECT statement p. Do not invoke the select ** callback on p, but do invoke it on each FROM clause subquery -** and on any subqueries further down in the tree. Return +** and on any subqueries further down in the tree. Return ** WRC_Abort or WRC_Continue; */ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){ SrcList *pSrc; int i; - struct SrcList_item *pItem; + SrcItem *pItem; pSrc = p->pSrc; - assert( pSrc!=0 ); - for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){ - if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){ - return WRC_Abort; - } - if( pItem->fg.isTabFunc - && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg) - ){ - return WRC_Abort; + if( ALWAYS(pSrc) ){ + for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){ + if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){ + return WRC_Abort; + } + if( pItem->fg.isTabFunc + && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg) + ){ + return WRC_Abort; + } } } return WRC_Continue; -} +} /* ** Call sqlite3WalkExpr() for every expression in Select statement p. ** Invoke sqlite3WalkSelect() for subqueries in the FROM clause and -** on the compound select chain, p->pPrior. +** on the compound select chain, p->pPrior. ** ** If it is not NULL, the xSelectCallback() callback is invoked before ** the walk of the expressions and FROM clause. The xSelectCallback2() @@ -93158,6 +105174,43 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){ return WRC_Continue; } +/* Increase the walkerDepth when entering a subquery, and +** decrease when leaving the subquery. +*/ +SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker *pWalker, Select *pSelect){ + UNUSED_PARAMETER(pSelect); + pWalker->walkerDepth++; + return WRC_Continue; +} +SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker *pWalker, Select *pSelect){ + UNUSED_PARAMETER(pSelect); + pWalker->walkerDepth--; +} + + +/* +** No-op routine for the parse-tree walker. +** +** When this routine is the Walker.xExprCallback then expression trees +** are walked without any actions being taken at each node. Presumably, +** when this routine is used for Walker.xExprCallback then +** Walker.xSelectCallback is set to do something useful for every +** subquery in the parser tree. +*/ +SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ + UNUSED_PARAMETER2(NotUsed, NotUsed2); + return WRC_Continue; +} + +/* +** No-op routine for the parse-tree walker for SELECT statements. +** subquery in the parser tree. +*/ +SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker *NotUsed, Select *NotUsed2){ + UNUSED_PARAMETER2(NotUsed, NotUsed2); + return WRC_Continue; +} + /************** End of walker.c **********************************************/ /************** Begin file resolve.c *****************************************/ /* @@ -93178,6 +105231,11 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){ */ /* #include "sqliteInt.h" */ +/* +** Magic table number to mean the EXCLUDED table in an UPSERT statement. +*/ +#define EXCLUDED_TABLE_NUMBER 2 + /* ** Walk the expression tree pExpr and increase the aggregate function ** depth (the Expr.op2 field) by N on every TK_AGG_FUNCTION node. @@ -93186,6 +105244,8 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){ ** ** incrAggFunctionDepth(pExpr,n) is the main routine. incrAggDepth(..) ** is a helper function - a callback for the tree walker. +** +** See also the sqlite3WindowExtraAggFuncDepth() routine in window.c */ static int incrAggDepth(Walker *pWalker, Expr *pExpr){ if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.n; @@ -93225,7 +105285,6 @@ static void resolveAlias( ExprList *pEList, /* A result set */ int iCol, /* A column in the result set. 0..pEList->nExpr-1 */ Expr *pExpr, /* Transform this into an alias to the result set */ - const char *zType, /* "GROUP" or "ORDER" or "" */ int nSubquery /* Number of subqueries that the label is moving */ ){ Expr *pOrig; /* The iCol-th column of the result set */ @@ -93237,48 +105296,26 @@ static void resolveAlias( assert( pOrig!=0 ); db = pParse->db; pDup = sqlite3ExprDup(db, pOrig, 0); - if( pDup!=0 ){ - if( zType[0]!='G' ) incrAggFunctionDepth(pDup, nSubquery); + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pDup); + pDup = 0; + }else{ + Expr temp; + incrAggFunctionDepth(pDup, nSubquery); if( pExpr->op==TK_COLLATE ){ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); pDup = sqlite3ExprAddCollateString(pParse, pDup, pExpr->u.zToken); } - ExprSetProperty(pDup, EP_Alias); - - /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This - ** prevents ExprDelete() from deleting the Expr structure itself, - ** allowing it to be repopulated by the memcpy() on the following line. - ** The pExpr->u.zToken might point into memory that will be freed by the - ** sqlite3DbFree(db, pDup) on the last line of this block, so be sure to - ** make a copy of the token before doing the sqlite3DbFree(). - */ - ExprSetProperty(pExpr, EP_Static); - sqlite3ExprDelete(db, pExpr); - memcpy(pExpr, pDup, sizeof(*pExpr)); - if( !ExprHasProperty(pExpr, EP_IntValue) && pExpr->u.zToken!=0 ){ - assert( (pExpr->flags & (EP_Reduced|EP_TokenOnly))==0 ); - pExpr->u.zToken = sqlite3DbStrDup(db, pExpr->u.zToken); - pExpr->flags |= EP_MemToken; + memcpy(&temp, pDup, sizeof(Expr)); + memcpy(pDup, pExpr, sizeof(Expr)); + memcpy(pExpr, &temp, sizeof(Expr)); + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + if( ALWAYS(pExpr->y.pWin!=0) ){ + pExpr->y.pWin->pOwner = pExpr; + } } - sqlite3DbFree(db, pDup); + sqlite3ExprDeferredDelete(pParse, pDup); } - ExprSetProperty(pExpr, EP_Alias); -} - - -/* -** Return TRUE if the name zCol occurs anywhere in the USING clause. -** -** Return FALSE if the USING clause is NULL or if it does not contain -** zCol. -*/ -static int nameInUsingClause(IdList *pUsing, const char *zCol){ - if( pUsing ){ - int k; - for(k=0; knId; k++){ - if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ) return 1; - } - } - return 0; } /* @@ -93288,13 +105325,16 @@ static int nameInUsingClause(IdList *pUsing, const char *zCol){ ** and zCol. If any of zDb, zTab, and zCol are NULL then those fields will ** match anything. */ -SQLITE_PRIVATE int sqlite3MatchSpanName( - const char *zSpan, +SQLITE_PRIVATE int sqlite3MatchEName( + const struct ExprList_item *pItem, const char *zCol, const char *zTab, const char *zDb ){ int n; + const char *zSpan; + if( pItem->fg.eEName!=ENAME_TAB ) return 0; + zSpan = pItem->zEName; for(n=0; ALWAYS(zSpan[n]) && zSpan[n]!='.'; n++){} if( zDb && (sqlite3StrNICmp(zSpan, zDb, n)!=0 || zDb[n]!=0) ){ return 0; @@ -93311,9 +105351,101 @@ SQLITE_PRIVATE int sqlite3MatchSpanName( return 1; } +/* +** Return TRUE if the double-quoted string mis-feature should be supported. +*/ +static int areDoubleQuotedStringsEnabled(sqlite3 *db, NameContext *pTopNC){ + if( db->init.busy ) return 1; /* Always support for legacy schemas */ + if( pTopNC->ncFlags & NC_IsDDL ){ + /* Currently parsing a DDL statement */ + if( sqlite3WritableSchema(db) && (db->flags & SQLITE_DqsDML)!=0 ){ + return 1; + } + return (db->flags & SQLITE_DqsDDL)!=0; + }else{ + /* Currently parsing a DML statement */ + return (db->flags & SQLITE_DqsDML)!=0; + } +} + +/* +** The argument is guaranteed to be a non-NULL Expr node of type TK_COLUMN. +** return the appropriate colUsed mask. +*/ +SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr *pExpr){ + int n; + Table *pExTab; + + n = pExpr->iColumn; + assert( ExprUseYTab(pExpr) ); + pExTab = pExpr->y.pTab; + assert( pExTab!=0 ); + if( (pExTab->tabFlags & TF_HasGenerated)!=0 + && (pExTab->aCol[n].colFlags & COLFLAG_GENERATED)!=0 + ){ + testcase( pExTab->nCol==BMS-1 ); + testcase( pExTab->nCol==BMS ); + return pExTab->nCol>=BMS ? ALLBITS : MASKBIT(pExTab->nCol)-1; + }else{ + testcase( n==BMS-1 ); + testcase( n==BMS ); + if( n>=BMS ) n = BMS-1; + return ((Bitmask)1)<db, TK_COLUMN, 0, 0); + if( pNew ){ + pNew->iTable = pMatch->iCursor; + pNew->iColumn = iColumn; + pNew->y.pTab = pMatch->pTab; + assert( (pMatch->fg.jointype & (JT_LEFT|JT_LTORJ))!=0 ); + ExprSetProperty(pNew, EP_CanBeNull); + *ppList = sqlite3ExprListAppend(pParse, *ppList, pNew); + } +} + +/* +** Return TRUE (non-zero) if zTab is a valid name for the schema table pTab. +*/ +static SQLITE_NOINLINE int isValidSchemaTableName( + const char *zTab, /* Name as it appears in the SQL */ + Table *pTab, /* The schema table we are trying to match */ + Schema *pSchema /* non-NULL if a database qualifier is present */ +){ + const char *zLegacy; + assert( pTab!=0 ); + assert( pTab->tnum==1 ); + if( sqlite3StrNICmp(zTab, "sqlite_", 7)!=0 ) return 0; + zLegacy = pTab->zName; + if( strcmp(zLegacy+7, &LEGACY_TEMP_SCHEMA_TABLE[7])==0 ){ + if( sqlite3StrICmp(zTab+7, &PREFERRED_TEMP_SCHEMA_TABLE[7])==0 ){ + return 1; + } + if( pSchema==0 ) return 0; + if( sqlite3StrICmp(zTab+7, &LEGACY_SCHEMA_TABLE[7])==0 ) return 1; + if( sqlite3StrICmp(zTab+7, &PREFERRED_SCHEMA_TABLE[7])==0 ) return 1; + }else{ + if( sqlite3StrICmp(zTab+7, &PREFERRED_SCHEMA_TABLE[7])==0 ) return 1; + } + return 0; +} + /* ** Given the name of a column of the form X.Y.Z or Y.Z or just Z, look up -** that name in the set of source tables in pSrcList and make the pExpr +** that name in the set of source tables in pSrcList and make the pExpr ** expression node refer back to that source column. The following changes ** are made to pExpr: ** @@ -93321,7 +105453,7 @@ SQLITE_PRIVATE int sqlite3MatchSpanName( ** (even if X is implied). ** pExpr->iTable Set to the cursor number for the table obtained ** from pSrcList. -** pExpr->pTab Points to the Table structure of X.Y (even if +** pExpr->y.pTab Points to the Table structure of X.Y (even if ** X and/or Y are implied.) ** pExpr->iColumn Set to the column number within the table. ** pExpr->op Set to TK_COLUMN. @@ -93351,21 +105483,22 @@ static int lookupName( int cntTab = 0; /* Number of matching table names */ int nSubquery = 0; /* How many levels of subquery */ sqlite3 *db = pParse->db; /* The database connection */ - struct SrcList_item *pItem; /* Use for looping over pSrcList items */ - struct SrcList_item *pMatch = 0; /* The matching pSrcList item */ + SrcItem *pItem; /* Use for looping over pSrcList items */ + SrcItem *pMatch = 0; /* The matching pSrcList item */ NameContext *pTopNC = pNC; /* First namecontext in the list */ Schema *pSchema = 0; /* Schema of the expression */ int eNewExprOp = TK_COLUMN; /* New value for pExpr->op on success */ - Table *pTab = 0; /* Table hold the row */ + Table *pTab = 0; /* Table holding the row */ Column *pCol; /* A column of pTab */ + ExprList *pFJMatch = 0; /* Matches for FULL JOIN .. USING */ assert( pNC ); /* the name context cannot be NULL. */ assert( zCol ); /* The Z in X.Y.Z cannot be NULL */ + assert( zDb==0 || zTab!=0 ); assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) ); /* Initialize the node to no-match */ pExpr->iTable = -1; - pExpr->pTab = 0; ExprSetVVAProperty(pExpr, EP_NoReduce); /* Translate the schema name in zDb into a pointer to the corresponding @@ -93389,6 +105522,12 @@ static int lookupName( break; } } + if( i==db->nDb && sqlite3StrICmp("main", zDb)==0 ){ + /* This branch is taken when the main database has been renamed + ** using SQLITE_DBCONFIG_MAINDBNAME. */ + pSchema = db->aDb[0].pSchema; + zDb = db->aDb[0].zDbSName; + } } } @@ -93400,102 +105539,183 @@ static int lookupName( if( pSrcList ){ for(i=0, pItem=pSrcList->a; inSrc; i++, pItem++){ + u8 hCol; pTab = pItem->pTab; assert( pTab!=0 && pTab->zName!=0 ); - assert( pTab->nCol>0 ); - if( pItem->pSelect && (pItem->pSelect->selFlags & SF_NestedFrom)!=0 ){ + assert( pTab->nCol>0 || pParse->nErr ); + assert( (int)pItem->fg.isNestedFrom == IsNestedFrom(pItem->pSelect) ); + if( pItem->fg.isNestedFrom ){ + /* In this case, pItem is a subquery that has been formed from a + ** parenthesized subset of the FROM clause terms. Example: + ** .... FROM t1 LEFT JOIN (t2 RIGHT JOIN t3 USING(x)) USING(y) ... + ** \_________________________/ + ** This pItem -------------^ + */ int hit = 0; + assert( pItem->pSelect!=0 ); pEList = pItem->pSelect->pEList; + assert( pEList!=0 ); + assert( pEList->nExpr==pTab->nCol ); for(j=0; jnExpr; j++){ - if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){ - cnt++; - cntTab = 2; - pMatch = pItem; - pExpr->iColumn = j; - hit = 1; + if( !sqlite3MatchEName(&pEList->a[j], zCol, zTab, zDb) ){ + continue; } + if( cnt>0 ){ + if( pItem->fg.isUsing==0 + || sqlite3IdListIndex(pItem->u3.pUsing, zCol)<0 + ){ + /* Two or more tables have the same column name which is + ** not joined by USING. This is an error. Signal as much + ** by clearing pFJMatch and letting cnt go above 1. */ + sqlite3ExprListDelete(db, pFJMatch); + pFJMatch = 0; + }else + if( (pItem->fg.jointype & JT_RIGHT)==0 ){ + /* An INNER or LEFT JOIN. Use the left-most table */ + continue; + }else + if( (pItem->fg.jointype & JT_LEFT)==0 ){ + /* A RIGHT JOIN. Use the right-most table */ + cnt = 0; + sqlite3ExprListDelete(db, pFJMatch); + pFJMatch = 0; + }else{ + /* For a FULL JOIN, we must construct a coalesce() func */ + extendFJMatch(pParse, &pFJMatch, pMatch, pExpr->iColumn); + } + } + cnt++; + cntTab = 2; + pMatch = pItem; + pExpr->iColumn = j; + pEList->a[j].fg.bUsed = 1; + hit = 1; + if( pEList->a[j].fg.bUsingTerm ) break; } if( hit || zTab==0 ) continue; } - if( zDb && pTab->pSchema!=pSchema ){ - continue; - } + assert( zDb==0 || zTab!=0 ); if( zTab ){ - const char *zTabName = pItem->zAlias ? pItem->zAlias : pTab->zName; - assert( zTabName!=0 ); - if( sqlite3StrICmp(zTabName, zTab)!=0 ){ - continue; + if( zDb ){ + if( pTab->pSchema!=pSchema ) continue; + if( pSchema==0 && strcmp(zDb,"*")!=0 ) continue; + } + if( pItem->zAlias!=0 ){ + if( sqlite3StrICmp(zTab, pItem->zAlias)!=0 ){ + continue; + } + }else if( sqlite3StrICmp(zTab, pTab->zName)!=0 ){ + if( pTab->tnum!=1 ) continue; + if( !isValidSchemaTableName(zTab, pTab, pSchema) ) continue; + } + assert( ExprUseYTab(pExpr) ); + if( IN_RENAME_OBJECT && pItem->zAlias ){ + sqlite3RenameTokenRemap(pParse, 0, (void*)&pExpr->y.pTab); } } - if( 0==(cntTab++) ){ - pMatch = pItem; - } + hCol = sqlite3StrIHash(zCol); for(j=0, pCol=pTab->aCol; jnCol; j++, pCol++){ - if( sqlite3StrICmp(pCol->zName, zCol)==0 ){ - /* If there has been exactly one prior match and this match - ** is for the right-hand table of a NATURAL JOIN or is in a - ** USING clause, then skip this match. - */ - if( cnt==1 ){ - if( pItem->fg.jointype & JT_NATURAL ) continue; - if( nameInUsingClause(pItem->pUsing, zCol) ) continue; + if( pCol->hName==hCol + && sqlite3StrICmp(pCol->zCnName, zCol)==0 + ){ + if( cnt>0 ){ + if( pItem->fg.isUsing==0 + || sqlite3IdListIndex(pItem->u3.pUsing, zCol)<0 + ){ + /* Two or more tables have the same column name which is + ** not joined by USING. This is an error. Signal as much + ** by clearing pFJMatch and letting cnt go above 1. */ + sqlite3ExprListDelete(db, pFJMatch); + pFJMatch = 0; + }else + if( (pItem->fg.jointype & JT_RIGHT)==0 ){ + /* An INNER or LEFT JOIN. Use the left-most table */ + continue; + }else + if( (pItem->fg.jointype & JT_LEFT)==0 ){ + /* A RIGHT JOIN. Use the right-most table */ + cnt = 0; + sqlite3ExprListDelete(db, pFJMatch); + pFJMatch = 0; + }else{ + /* For a FULL JOIN, we must construct a coalesce() func */ + extendFJMatch(pParse, &pFJMatch, pMatch, pExpr->iColumn); + } } cnt++; pMatch = pItem; /* Substitute the rowid (column -1) for the INTEGER PRIMARY KEY */ pExpr->iColumn = j==pTab->iPKey ? -1 : (i16)j; + if( pItem->fg.isNestedFrom ){ + sqlite3SrcItemColumnUsed(pItem, j); + } break; } } + if( 0==cnt && VisibleRowid(pTab) ){ + cntTab++; + pMatch = pItem; + } } if( pMatch ){ pExpr->iTable = pMatch->iCursor; - pExpr->pTab = pMatch->pTab; - /* RIGHT JOIN not (yet) supported */ - assert( (pMatch->fg.jointype & JT_RIGHT)==0 ); - if( (pMatch->fg.jointype & JT_LEFT)!=0 ){ + assert( ExprUseYTab(pExpr) ); + pExpr->y.pTab = pMatch->pTab; + if( (pMatch->fg.jointype & (JT_LEFT|JT_LTORJ))!=0 ){ ExprSetProperty(pExpr, EP_CanBeNull); } - pSchema = pExpr->pTab->pSchema; + pSchema = pExpr->y.pTab->pSchema; } } /* if( pSrcList ) */ #if !defined(SQLITE_OMIT_TRIGGER) || !defined(SQLITE_OMIT_UPSERT) - /* If we have not already resolved the name, then maybe + /* If we have not already resolved the name, then maybe ** it is a new.* or old.* trigger argument reference. Or - ** maybe it is an excluded.* from an upsert. + ** maybe it is an excluded.* from an upsert. Or maybe it is + ** a reference in the RETURNING clause to a table being modified. */ - if( zDb==0 && zTab!=0 && cntTab==0 ){ + if( cnt==0 && zDb==0 ){ pTab = 0; #ifndef SQLITE_OMIT_TRIGGER if( pParse->pTriggerTab!=0 ){ int op = pParse->eTriggerOp; assert( op==TK_DELETE || op==TK_UPDATE || op==TK_INSERT ); - if( op!=TK_DELETE && sqlite3StrICmp("new",zTab) == 0 ){ + if( pParse->bReturning ){ + if( (pNC->ncFlags & NC_UBaseReg)!=0 + && ALWAYS(zTab==0 + || sqlite3StrICmp(zTab,pParse->pTriggerTab->zName)==0) + ){ + pExpr->iTable = op!=TK_DELETE; + pTab = pParse->pTriggerTab; + } + }else if( op!=TK_DELETE && zTab && sqlite3StrICmp("new",zTab) == 0 ){ pExpr->iTable = 1; pTab = pParse->pTriggerTab; - }else if( op!=TK_INSERT && sqlite3StrICmp("old",zTab)==0 ){ + }else if( op!=TK_INSERT && zTab && sqlite3StrICmp("old",zTab)==0 ){ pExpr->iTable = 0; pTab = pParse->pTriggerTab; } } #endif /* SQLITE_OMIT_TRIGGER */ #ifndef SQLITE_OMIT_UPSERT - if( (pNC->ncFlags & NC_UUpsert)!=0 ){ + if( (pNC->ncFlags & NC_UUpsert)!=0 && zTab!=0 ){ Upsert *pUpsert = pNC->uNC.pUpsert; if( pUpsert && sqlite3StrICmp("excluded",zTab)==0 ){ pTab = pUpsert->pUpsertSrc->a[0].pTab; - pExpr->iTable = 2; + pExpr->iTable = EXCLUDED_TABLE_NUMBER; } } #endif /* SQLITE_OMIT_UPSERT */ - if( pTab ){ + if( pTab ){ int iCol; + u8 hCol = sqlite3StrIHash(zCol); pSchema = pTab->pSchema; cntTab++; for(iCol=0, pCol=pTab->aCol; iColnCol; iCol++, pCol++){ - if( sqlite3StrICmp(pCol->zName, zCol)==0 ){ + if( pCol->hName==hCol + && sqlite3StrICmp(pCol->zCnName, zCol)==0 + ){ if( iCol==pTab->iPKey ){ iCol = -1; } @@ -93508,31 +105728,48 @@ static int lookupName( } if( iColnCol ){ cnt++; + pMatch = 0; #ifndef SQLITE_OMIT_UPSERT - if( pExpr->iTable==2 ){ + if( pExpr->iTable==EXCLUDED_TABLE_NUMBER ){ testcase( iCol==(-1) ); - pExpr->iTable = pNC->uNC.pUpsert->regData + iCol; - eNewExprOp = TK_REGISTER; - ExprSetProperty(pExpr, EP_Alias); + assert( ExprUseYTab(pExpr) ); + if( IN_RENAME_OBJECT ){ + pExpr->iColumn = iCol; + pExpr->y.pTab = pTab; + eNewExprOp = TK_COLUMN; + }else{ + pExpr->iTable = pNC->uNC.pUpsert->regData + + sqlite3TableColumnToStorage(pTab, iCol); + eNewExprOp = TK_REGISTER; + } }else #endif /* SQLITE_OMIT_UPSERT */ { -#ifndef SQLITE_OMIT_TRIGGER - if( iCol<0 ){ - pExpr->affinity = SQLITE_AFF_INTEGER; - }else if( pExpr->iTable==0 ){ - testcase( iCol==31 ); - testcase( iCol==32 ); - pParse->oldmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<y.pTab = pTab; + if( pParse->bReturning ){ + eNewExprOp = TK_REGISTER; + pExpr->op2 = TK_COLUMN; + pExpr->iColumn = iCol; + pExpr->iTable = pNC->uNC.iBaseReg + (pTab->nCol+1)*pExpr->iTable + + sqlite3TableColumnToStorage(pTab, iCol) + 1; }else{ - testcase( iCol==31 ); - testcase( iCol==32 ); - pParse->newmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<pTab = pTab; - pExpr->iColumn = (i16)iCol; - eNewExprOp = TK_TRIGGER; + pExpr->iColumn = (i16)iCol; + eNewExprOp = TK_TRIGGER; +#ifndef SQLITE_OMIT_TRIGGER + if( iCol<0 ){ + pExpr->affExpr = SQLITE_AFF_INTEGER; + }else if( pExpr->iTable==0 ){ + testcase( iCol==31 ); + testcase( iCol==32 ); + pParse->oldmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<newmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<ncFlags & NC_IdxExpr)==0 + && (pNC->ncFlags & (NC_IdxExpr|NC_GenCol))==0 && sqlite3IsRowid(zCol) - && VisibleRowid(pMatch->pTab) + && ALWAYS(VisibleRowid(pMatch->pTab)) ){ cnt = 1; pExpr->iColumn = -1; - pExpr->affinity = SQLITE_AFF_INTEGER; + pExpr->affExpr = SQLITE_AFF_INTEGER; } /* @@ -93572,35 +105809,46 @@ static int lookupName( ** is supported for backwards compatibility only. Hence, we issue a warning ** on sqlite3_log() whenever the capability is used. */ - if( (pNC->ncFlags & NC_UEList)!=0 - && cnt==0 + if( cnt==0 + && (pNC->ncFlags & NC_UEList)!=0 && zTab==0 ){ pEList = pNC->uNC.pEList; assert( pEList!=0 ); for(j=0; jnExpr; j++){ - char *zAs = pEList->a[j].zName; - if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){ + char *zAs = pEList->a[j].zEName; + if( pEList->a[j].fg.eEName==ENAME_NAME + && sqlite3_stricmp(zAs, zCol)==0 + ){ Expr *pOrig; assert( pExpr->pLeft==0 && pExpr->pRight==0 ); - assert( pExpr->x.pList==0 ); - assert( pExpr->x.pSelect==0 ); + assert( ExprUseXList(pExpr)==0 || pExpr->x.pList==0 ); + assert( ExprUseXSelect(pExpr)==0 || pExpr->x.pSelect==0 ); pOrig = pEList->a[j].pExpr; if( (pNC->ncFlags&NC_AllowAgg)==0 && ExprHasProperty(pOrig, EP_Agg) ){ sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs); return WRC_Abort; } + if( ExprHasProperty(pOrig, EP_Win) + && ((pNC->ncFlags&NC_AllowWin)==0 || pNC!=pTopNC ) + ){ + sqlite3ErrorMsg(pParse, "misuse of aliased window function %s",zAs); + return WRC_Abort; + } if( sqlite3ExprVectorSize(pOrig)!=1 ){ sqlite3ErrorMsg(pParse, "row value misused"); return WRC_Abort; } - resolveAlias(pParse, pEList, j, pExpr, "", nSubquery); + resolveAlias(pParse, pEList, j, pExpr, nSubquery); cnt = 1; pMatch = 0; assert( zTab==0 && zDb==0 ); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, 0, (void*)pExpr); + } goto lookupname_end; } - } + } } /* Advance to the next name context. The loop will exit when either @@ -93624,9 +105872,30 @@ static int lookupName( */ if( cnt==0 && zTab==0 ){ assert( pExpr->op==TK_ID ); - if( ExprHasProperty(pExpr,EP_DblQuoted) ){ + if( ExprHasProperty(pExpr,EP_DblQuoted) + && areDoubleQuotedStringsEnabled(db, pTopNC) + ){ + /* If a double-quoted identifier does not match any known column name, + ** then treat it as a string. + ** + ** This hack was added in the early days of SQLite in a misguided attempt + ** to be compatible with MySQL 3.x, which used double-quotes for strings. + ** I now sorely regret putting in this hack. The effect of this hack is + ** that misspelled identifier names are silently converted into strings + ** rather than causing an error, to the frustration of countless + ** programmers. To all those frustrated programmers, my apologies. + ** + ** Someday, I hope to get rid of this hack. Unfortunately there is + ** a huge amount of legacy SQL that uses it. So for now, we just + ** issue a warning. + */ + sqlite3_log(SQLITE_WARNING, + "double-quoted string literal: \"%w\"", zCol); +#ifdef SQLITE_ENABLE_NORMALIZE + sqlite3VdbeAddDblquoteStr(db, pParse->pVdbe, zCol); +#endif pExpr->op = TK_STRING; - pExpr->pTab = 0; + memset(&pExpr->y, 0, sizeof(pExpr->y)); return WRC_Prune; } if( sqlite3ExprIdToTrueFalse(pExpr) ){ @@ -93635,11 +105904,37 @@ static int lookupName( } /* - ** cnt==0 means there was not match. cnt>1 means there were two or - ** more matches. Either way, we have an error. + ** cnt==0 means there was not match. + ** cnt>1 means there were two or more matches. + ** + ** cnt==0 is always an error. cnt>1 is often an error, but might + ** be multiple matches for a NATURAL LEFT JOIN or a LEFT JOIN USING. */ + assert( pFJMatch==0 || cnt>0 ); + assert( !ExprHasProperty(pExpr, EP_xIsSelect|EP_IntValue) ); if( cnt!=1 ){ const char *zErr; + if( pFJMatch ){ + if( pFJMatch->nExpr==cnt-1 ){ + if( ExprHasProperty(pExpr,EP_Leaf) ){ + ExprClearProperty(pExpr,EP_Leaf); + }else{ + sqlite3ExprDelete(db, pExpr->pLeft); + pExpr->pLeft = 0; + sqlite3ExprDelete(db, pExpr->pRight); + pExpr->pRight = 0; + } + extendFJMatch(pParse, &pFJMatch, pMatch, pExpr->iColumn); + pExpr->op = TK_FUNCTION; + pExpr->u.zToken = "coalesce"; + pExpr->x.pList = pFJMatch; + cnt = 1; + goto lookupname_end; + }else{ + sqlite3ExprListDelete(db, pFJMatch); + pFJMatch = 0; + } + } zErr = cnt==0 ? "no such column" : "ambiguous column name"; if( zDb ){ sqlite3ErrorMsg(pParse, "%s: %s.%s.%s", zErr, zDb, zTab, zCol); @@ -93648,40 +105943,50 @@ static int lookupName( }else{ sqlite3ErrorMsg(pParse, "%s: %s", zErr, zCol); } + sqlite3RecordErrorOffsetOfExpr(pParse->db, pExpr); pParse->checkSchema = 1; - pTopNC->nErr++; + pTopNC->nNcErr++; + } + assert( pFJMatch==0 ); + + /* Remove all substructure from pExpr */ + if( !ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){ + sqlite3ExprDelete(db, pExpr->pLeft); + pExpr->pLeft = 0; + sqlite3ExprDelete(db, pExpr->pRight); + pExpr->pRight = 0; + ExprSetProperty(pExpr, EP_Leaf); } /* If a column from a table in pSrcList is referenced, then record ** this fact in the pSrcList.a[].colUsed bitmask. Column 0 causes - ** bit 0 to be set. Column 1 sets bit 1. And so forth. If the - ** column number is greater than the number of bits in the bitmask - ** then set the high-order bit of the bitmask. + ** bit 0 to be set. Column 1 sets bit 1. And so forth. Bit 63 is + ** set if the 63rd or any subsequent column is used. + ** + ** The colUsed mask is an optimization used to help determine if an + ** index is a covering index. The correct answer is still obtained + ** if the mask contains extra set bits. However, it is important to + ** avoid setting bits beyond the maximum column number of the table. + ** (See ticket [b92e5e8ec2cdbaa1]). + ** + ** If a generated column is referenced, set bits for every column + ** of the table. */ if( pExpr->iColumn>=0 && pMatch!=0 ){ - int n = pExpr->iColumn; - testcase( n==BMS-1 ); - if( n>=BMS ){ - n = BMS-1; - } - assert( pMatch->iCursor==pExpr->iTable ); - pMatch->colUsed |= ((Bitmask)1)<colUsed |= sqlite3ExprColUsed(pExpr); } - /* Clean up and return - */ - sqlite3ExprDelete(db, pExpr->pLeft); - pExpr->pLeft = 0; - sqlite3ExprDelete(db, pExpr->pRight); - pExpr->pRight = 0; pExpr->op = eNewExprOp; - ExprSetProperty(pExpr, EP_Leaf); lookupname_end: if( cnt==1 ){ assert( pNC!=0 ); - if( !ExprHasProperty(pExpr, EP_Alias) ){ +#ifndef SQLITE_OMIT_AUTHORIZATION + if( pParse->db->xAuth + && (pExpr->op==TK_COLUMN || pExpr->op==TK_TRIGGER) + ){ sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList); } +#endif /* Increment the nRef value on all name contexts from TopNC up to ** the point where the name matched. */ for(;;){ @@ -93703,16 +106008,26 @@ lookupname_end: SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSrc, int iCol){ Expr *p = sqlite3ExprAlloc(db, TK_COLUMN, 0, 0); if( p ){ - struct SrcList_item *pItem = &pSrc->a[iSrc]; - p->pTab = pItem->pTab; + SrcItem *pItem = &pSrc->a[iSrc]; + Table *pTab; + assert( ExprUseYTab(p) ); + pTab = p->y.pTab = pItem->pTab; p->iTable = pItem->iCursor; - if( p->pTab->iPKey==iCol ){ + if( p->y.pTab->iPKey==iCol ){ p->iColumn = -1; }else{ p->iColumn = (ynVar)iCol; - testcase( iCol==BMS ); - testcase( iCol==BMS-1 ); - pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol); + if( (pTab->tabFlags & TF_HasGenerated)!=0 + && (pTab->aCol[iCol].colFlags & COLFLAG_GENERATED)!=0 + ){ + testcase( pTab->nCol==63 ); + testcase( pTab->nCol==64 ); + pItem->colUsed = pTab->nCol>=64 ? ALLBITS : MASKBIT(pTab->nCol)-1; + }else{ + testcase( iCol==BMS ); + testcase( iCol==BMS-1 ); + pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol); + } } } return p; @@ -93721,23 +106036,41 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr /* ** Report an error that an expression is not valid for some set of ** pNC->ncFlags values determined by validMask. +** +** static void notValid( +** Parse *pParse, // Leave error message here +** NameContext *pNC, // The name context +** const char *zMsg, // Type of error +** int validMask, // Set of contexts for which prohibited +** Expr *pExpr // Invalidate this expression on error +** ){...} +** +** As an optimization, since the conditional is almost always false +** (because errors are rare), the conditional is moved outside of the +** function call using a macro. */ -static void notValid( - Parse *pParse, /* Leave error message here */ - NameContext *pNC, /* The name context */ - const char *zMsg, /* Type of error */ - int validMask /* Set of contexts for which prohibited */ +static void notValidImpl( + Parse *pParse, /* Leave error message here */ + NameContext *pNC, /* The name context */ + const char *zMsg, /* Type of error */ + Expr *pExpr, /* Invalidate this expression on error */ + Expr *pError /* Associate error with this expression */ ){ - assert( (validMask&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr))==0 ); - if( (pNC->ncFlags & validMask)!=0 ){ - const char *zIn = "partial index WHERE clauses"; - if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions"; + const char *zIn = "partial index WHERE clauses"; + if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions"; #ifndef SQLITE_OMIT_CHECK - else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints"; + else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints"; #endif - sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn); - } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + else if( pNC->ncFlags & NC_GenCol ) zIn = "generated columns"; +#endif + sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn); + if( pExpr ) pExpr->op = TK_NULL; + sqlite3RecordErrorOffsetOfExpr(pParse->db, pError); } +#define sqlite3ResolveNotValid(P,N,M,X,E,R) \ + assert( ((X)&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol))==0 ); \ + if( ((N)->ncFlags & (X))!=0 ) notValidImpl(P,N,M,E,R); /* ** Expression p should encode a floating point value between 1.0 and 0.0. @@ -93747,6 +106080,7 @@ static void notValid( static int exprProbability(Expr *p){ double r = -1.0; if( p->op!=TK_FLOAT ) return -1; + assert( !ExprHasProperty(p, EP_IntValue) ); sqlite3AtoF(p->u.zToken, &r, sqlite3Strlen30(p->u.zToken), SQLITE_UTF8); assert( r>=0.0 ); if( r>1.0 ) return -1; @@ -93784,33 +106118,70 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ #endif switch( pExpr->op ){ -#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) /* The special operator TK_ROW means use the rowid for the first ** column in the FROM clause. This is used by the LIMIT and ORDER BY - ** clause processing on UPDATE and DELETE statements. + ** clause processing on UPDATE and DELETE statements, and by + ** UPDATE ... FROM statement processing. */ case TK_ROW: { SrcList *pSrcList = pNC->pSrcList; - struct SrcList_item *pItem; - assert( pSrcList && pSrcList->nSrc==1 ); + SrcItem *pItem; + assert( pSrcList && pSrcList->nSrc>=1 ); pItem = pSrcList->a; - assert( HasRowid(pItem->pTab) && pItem->pTab->pSelect==0 ); pExpr->op = TK_COLUMN; - pExpr->pTab = pItem->pTab; + assert( ExprUseYTab(pExpr) ); + pExpr->y.pTab = pItem->pTab; pExpr->iTable = pItem->iCursor; - pExpr->iColumn = -1; - pExpr->affinity = SQLITE_AFF_INTEGER; + pExpr->iColumn--; + pExpr->affExpr = SQLITE_AFF_INTEGER; break; } -#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) - && !defined(SQLITE_OMIT_SUBQUERY) */ + + /* An optimization: Attempt to convert + ** + ** "expr IS NOT NULL" --> "TRUE" + ** "expr IS NULL" --> "FALSE" + ** + ** if we can prove that "expr" is never NULL. Call this the + ** "NOT NULL strength reduction optimization". + ** + ** If this optimization occurs, also restore the NameContext ref-counts + ** to the state they where in before the "column" LHS expression was + ** resolved. This prevents "column" from being counted as having been + ** referenced, which might prevent a SELECT from being erroneously + ** marked as correlated. + */ + case TK_NOTNULL: + case TK_ISNULL: { + int anRef[8]; + NameContext *p; + int i; + for(i=0, p=pNC; p && ipNext, i++){ + anRef[i] = p->nRef; + } + sqlite3WalkExpr(pWalker, pExpr->pLeft); + if( 0==sqlite3ExprCanBeNull(pExpr->pLeft) && !IN_RENAME_OBJECT ){ + testcase( ExprHasProperty(pExpr, EP_OuterON) ); + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + pExpr->u.iValue = (pExpr->op==TK_NOTNULL); + pExpr->flags |= EP_IntValue; + pExpr->op = TK_INTEGER; + + for(i=0, p=pNC; p && ipNext, i++){ + p->nRef = anRef[i]; + } + sqlite3ExprDelete(pParse->db, pExpr->pLeft); + pExpr->pLeft = 0; + } + return WRC_Prune; + } /* A column name: ID ** Or table name and column name: ID.ID ** Or a database, table and column: ID.ID.ID ** ** The TK_ID and TK_OUT cases are combined so that there will only - ** be one call to lookupName(). Then the compiler will in-line + ** be one call to lookupName(). Then the compiler will in-line ** lookupName() for a size reduction and performance increase. */ case TK_ID: @@ -93823,19 +106194,31 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ if( pExpr->op==TK_ID ){ zDb = 0; zTable = 0; + assert( !ExprHasProperty(pExpr, EP_IntValue) ); zColumn = pExpr->u.zToken; }else{ - notValid(pParse, pNC, "the \".\" operator", NC_IdxExpr); + Expr *pLeft = pExpr->pLeft; + testcase( pNC->ncFlags & NC_IdxExpr ); + testcase( pNC->ncFlags & NC_GenCol ); + sqlite3ResolveNotValid(pParse, pNC, "the \".\" operator", + NC_IdxExpr|NC_GenCol, 0, pExpr); pRight = pExpr->pRight; if( pRight->op==TK_ID ){ zDb = 0; - zTable = pExpr->pLeft->u.zToken; - zColumn = pRight->u.zToken; }else{ assert( pRight->op==TK_DOT ); - zDb = pExpr->pLeft->u.zToken; - zTable = pRight->pLeft->u.zToken; - zColumn = pRight->pRight->u.zToken; + assert( !ExprHasProperty(pRight, EP_IntValue) ); + zDb = pLeft->u.zToken; + pLeft = pRight->pLeft; + pRight = pRight->pRight; + } + assert( ExprUseUToken(pLeft) && ExprUseUToken(pRight) ); + zTable = pLeft->u.zToken; + zColumn = pRight->u.zToken; + assert( ExprUseYTab(pExpr) ); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, (void*)pExpr, (void*)pRight); + sqlite3RenameTokenRemap(pParse, (void*)&pExpr->y.pTab, (void*)pLeft); } } return lookupName(pParse, zDb, zTable, zColumn, pNC, pExpr); @@ -93849,14 +106232,15 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ int no_such_func = 0; /* True if no such function exists */ int wrong_num_args = 0; /* True if wrong number of arguments */ int is_agg = 0; /* True if is an aggregate function */ - int nId; /* Number of characters in function name */ const char *zId; /* The function name. */ FuncDef *pDef; /* Information about the function */ u8 enc = ENC(pParse->db); /* The database encoding */ - - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); + int savedAllowFlags = (pNC->ncFlags & (NC_AllowAgg | NC_AllowWin)); +#ifndef SQLITE_OMIT_WINDOWFUNC + Window *pWin = (IsWindowFunc(pExpr) ? pExpr->y.pWin : 0); +#endif + assert( !ExprHasProperty(pExpr, EP_xIsSelect|EP_IntValue) ); zId = pExpr->u.zToken; - nId = sqlite3Strlen30(zId); pDef = sqlite3FindFunction(pParse->db, zId, n, enc, 0); if( pDef==0 ){ pDef = sqlite3FindFunction(pParse->db, zId, -2, enc, 0); @@ -93868,14 +106252,14 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ }else{ is_agg = pDef->xFinalize!=0; if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){ - ExprSetProperty(pExpr, EP_Unlikely|EP_Skip); + ExprSetProperty(pExpr, EP_Unlikely); if( n==2 ){ pExpr->iTable = exprProbability(pList->a[1].pExpr); if( pExpr->iTable<0 ){ sqlite3ErrorMsg(pParse, - "second argument to likelihood() must be a " - "constant between 0.0 and 1.0"); - pNC->nErr++; + "second argument to %#T() must be a " + "constant between 0.0 and 1.0", pExpr); + pNC->nNcErr++; } }else{ /* EVIDENCE-OF: R-61304-29449 The unlikely(X) function is @@ -93888,16 +106272,16 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ ** to likelihood(X,0.9375). */ /* TUNING: unlikely() probability is 0.0625. likely() is 0.9375 */ pExpr->iTable = pDef->zName[0]=='u' ? 8388608 : 125829120; - } + } } #ifndef SQLITE_OMIT_AUTHORIZATION { int auth = sqlite3AuthCheck(pParse, SQLITE_FUNCTION, 0,pDef->zName,0); if( auth!=SQLITE_OK ){ if( auth==SQLITE_DENY ){ - sqlite3ErrorMsg(pParse, "not authorized to use function: %s", - pDef->zName); - pNC->nErr++; + sqlite3ErrorMsg(pParse, "not authorized to use function: %#T", + pExpr); + pNC->nNcErr++; } pExpr->op = TK_NULL; return WRC_Prune; @@ -93907,54 +106291,160 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG) ){ /* For the purposes of the EP_ConstFunc flag, date and time ** functions and other functions that change slowly are considered - ** constant because they are constant for the duration of one query */ + ** constant because they are constant for the duration of one query. + ** This allows them to be factored out of inner loops. */ ExprSetProperty(pExpr,EP_ConstFunc); } if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){ - /* Date/time functions that use 'now', and other functions like + /* Clearly non-deterministic functions like random(), but also + ** date/time functions that use 'now', and other functions like ** sqlite_version() that might change over time cannot be used - ** in an index. */ - notValid(pParse, pNC, "non-deterministic functions", - NC_IdxExpr|NC_PartIdx); + ** in an index or generated column. Curiously, they can be used + ** in a CHECK constraint. SQLServer, MySQL, and PostgreSQL all + ** all this. */ + sqlite3ResolveNotValid(pParse, pNC, "non-deterministic functions", + NC_IdxExpr|NC_PartIdx|NC_GenCol, 0, pExpr); + }else{ + assert( (NC_SelfRef & 0xff)==NC_SelfRef ); /* Must fit in 8 bits */ + pExpr->op2 = pNC->ncFlags & NC_SelfRef; + if( pNC->ncFlags & NC_FromDDL ) ExprSetProperty(pExpr, EP_FromDDL); + } + if( (pDef->funcFlags & SQLITE_FUNC_INTERNAL)!=0 + && pParse->nested==0 + && (pParse->db->mDbFlags & DBFLAG_InternalFunc)==0 + ){ + /* Internal-use-only functions are disallowed unless the + ** SQL is being compiled using sqlite3NestedParse() or + ** the SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control has be + ** used to activate internal functions for testing purposes */ + no_such_func = 1; + pDef = 0; + }else + if( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0 + && !IN_RENAME_OBJECT + ){ + sqlite3ExprFunctionUsable(pParse, pExpr, pDef); } } - if( is_agg && (pNC->ncFlags & NC_AllowAgg)==0 ){ - sqlite3ErrorMsg(pParse, "misuse of aggregate function %.*s()", nId,zId); - pNC->nErr++; - is_agg = 0; - }else if( no_such_func && pParse->db->init.busy==0 -#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION - && pParse->explain==0 + + if( 0==IN_RENAME_OBJECT ){ +#ifndef SQLITE_OMIT_WINDOWFUNC + assert( is_agg==0 || (pDef->funcFlags & SQLITE_FUNC_MINMAX) + || (pDef->xValue==0 && pDef->xInverse==0) + || (pDef->xValue && pDef->xInverse && pDef->xSFunc && pDef->xFinalize) + ); + if( pDef && pDef->xValue==0 && pWin ){ + sqlite3ErrorMsg(pParse, + "%#T() may not be used as a window function", pExpr + ); + pNC->nNcErr++; + }else if( + (is_agg && (pNC->ncFlags & NC_AllowAgg)==0) + || (is_agg && (pDef->funcFlags&SQLITE_FUNC_WINDOW) && !pWin) + || (is_agg && pWin && (pNC->ncFlags & NC_AllowWin)==0) + ){ + const char *zType; + if( (pDef->funcFlags & SQLITE_FUNC_WINDOW) || pWin ){ + zType = "window"; + }else{ + zType = "aggregate"; + } + sqlite3ErrorMsg(pParse, "misuse of %s function %#T()",zType,pExpr); + pNC->nNcErr++; + is_agg = 0; + } +#else + if( (is_agg && (pNC->ncFlags & NC_AllowAgg)==0) ){ + sqlite3ErrorMsg(pParse,"misuse of aggregate function %#T()",pExpr); + pNC->nNcErr++; + is_agg = 0; + } #endif - ){ - sqlite3ErrorMsg(pParse, "no such function: %.*s", nId, zId); - pNC->nErr++; - }else if( wrong_num_args ){ - sqlite3ErrorMsg(pParse,"wrong number of arguments to function %.*s()", - nId, zId); - pNC->nErr++; + else if( no_such_func && pParse->db->init.busy==0 +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + && pParse->explain==0 +#endif + ){ + sqlite3ErrorMsg(pParse, "no such function: %#T", pExpr); + pNC->nNcErr++; + }else if( wrong_num_args ){ + sqlite3ErrorMsg(pParse,"wrong number of arguments to function %#T()", + pExpr); + pNC->nNcErr++; + } +#ifndef SQLITE_OMIT_WINDOWFUNC + else if( is_agg==0 && ExprHasProperty(pExpr, EP_WinFunc) ){ + sqlite3ErrorMsg(pParse, + "FILTER may not be used with non-aggregate %#T()", + pExpr + ); + pNC->nNcErr++; + } +#endif + if( is_agg ){ + /* Window functions may not be arguments of aggregate functions. + ** Or arguments of other window functions. But aggregate functions + ** may be arguments for window functions. */ +#ifndef SQLITE_OMIT_WINDOWFUNC + pNC->ncFlags &= ~(NC_AllowWin | (!pWin ? NC_AllowAgg : 0)); +#else + pNC->ncFlags &= ~NC_AllowAgg; +#endif + } } - if( is_agg ) pNC->ncFlags &= ~NC_AllowAgg; +#ifndef SQLITE_OMIT_WINDOWFUNC + else if( ExprHasProperty(pExpr, EP_WinFunc) ){ + is_agg = 1; + } +#endif sqlite3WalkExprList(pWalker, pList); if( is_agg ){ - NameContext *pNC2 = pNC; - pExpr->op = TK_AGG_FUNCTION; - pExpr->op2 = 0; - while( pNC2 && !sqlite3FunctionUsesThisSrc(pExpr, pNC2->pSrcList) ){ - pExpr->op2++; - pNC2 = pNC2->pNext; +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pWin ){ + Select *pSel = pNC->pWinSelect; + assert( pWin==0 || (ExprUseYWin(pExpr) && pWin==pExpr->y.pWin) ); + if( IN_RENAME_OBJECT==0 ){ + sqlite3WindowUpdate(pParse, pSel ? pSel->pWinDefn : 0, pWin, pDef); + if( pParse->db->mallocFailed ) break; + } + sqlite3WalkExprList(pWalker, pWin->pPartition); + sqlite3WalkExprList(pWalker, pWin->pOrderBy); + sqlite3WalkExpr(pWalker, pWin->pFilter); + sqlite3WindowLink(pSel, pWin); + pNC->ncFlags |= NC_HasWin; + }else +#endif /* SQLITE_OMIT_WINDOWFUNC */ + { + NameContext *pNC2; /* For looping up thru outer contexts */ + pExpr->op = TK_AGG_FUNCTION; + pExpr->op2 = 0; +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + sqlite3WalkExpr(pWalker, pExpr->y.pWin->pFilter); + } +#endif + pNC2 = pNC; + while( pNC2 + && sqlite3ReferencesSrcList(pParse, pExpr, pNC2->pSrcList)==0 + ){ + pExpr->op2++; + pNC2 = pNC2->pNext; + } + assert( pDef!=0 || IN_RENAME_OBJECT ); + if( pNC2 && pDef ){ + assert( SQLITE_FUNC_MINMAX==NC_MinMaxAgg ); + assert( SQLITE_FUNC_ANYORDER==NC_OrderAgg ); + testcase( (pDef->funcFlags & SQLITE_FUNC_MINMAX)!=0 ); + testcase( (pDef->funcFlags & SQLITE_FUNC_ANYORDER)!=0 ); + pNC2->ncFlags |= NC_HasAgg + | ((pDef->funcFlags^SQLITE_FUNC_ANYORDER) + & (SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER)); + } } - assert( pDef!=0 ); - if( pNC2 ){ - assert( SQLITE_FUNC_MINMAX==NC_MinMaxAgg ); - testcase( (pDef->funcFlags & SQLITE_FUNC_MINMAX)!=0 ); - pNC2->ncFlags |= NC_HasAgg | (pDef->funcFlags & SQLITE_FUNC_MINMAX); - - } - pNC->ncFlags |= NC_AllowAgg; + pNC->ncFlags |= savedAllowFlags; } /* FIX ME: Compute pExpr->affinity based on the expected return - ** type of the function + ** type of the function */ return WRC_Prune; } @@ -93964,29 +106454,41 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ #endif case TK_IN: { testcase( pExpr->op==TK_IN ); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ int nRef = pNC->nRef; - notValid(pParse, pNC, "subqueries", NC_IsCheck|NC_PartIdx|NC_IdxExpr); - sqlite3WalkSelect(pWalker, pExpr->x.pSelect); + testcase( pNC->ncFlags & NC_IsCheck ); + testcase( pNC->ncFlags & NC_PartIdx ); + testcase( pNC->ncFlags & NC_IdxExpr ); + testcase( pNC->ncFlags & NC_GenCol ); + if( pNC->ncFlags & NC_SelfRef ){ + notValidImpl(pParse, pNC, "subqueries", pExpr, pExpr); + }else{ + sqlite3WalkSelect(pWalker, pExpr->x.pSelect); + } assert( pNC->nRef>=nRef ); if( nRef!=pNC->nRef ){ ExprSetProperty(pExpr, EP_VarSelect); - pNC->ncFlags |= NC_VarSelect; } + pNC->ncFlags |= NC_Subquery; } break; } case TK_VARIABLE: { - notValid(pParse, pNC, "parameters", NC_IsCheck|NC_PartIdx|NC_IdxExpr); + testcase( pNC->ncFlags & NC_IsCheck ); + testcase( pNC->ncFlags & NC_PartIdx ); + testcase( pNC->ncFlags & NC_IdxExpr ); + testcase( pNC->ncFlags & NC_GenCol ); + sqlite3ResolveNotValid(pParse, pNC, "parameters", + NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol, pExpr, pExpr); break; } case TK_IS: case TK_ISNOT: { - Expr *pRight; + Expr *pRight = sqlite3ExprSkipCollateAndLikely(pExpr->pRight); assert( !ExprHasProperty(pExpr, EP_Reduced) ); /* Handle special cases of "x IS TRUE", "x IS FALSE", "x IS NOT TRUE", ** and "x IS NOT FALSE". */ - if( (pRight = pExpr->pRight)->op==TK_ID ){ + if( ALWAYS(pRight) && (pRight->op==TK_ID || pRight->op==TK_TRUEFALSE) ){ int rc = resolveExprStep(pWalker, pRight); if( rc==WRC_Abort ) return WRC_Abort; if( pRight->op==TK_TRUEFALSE ){ @@ -93995,7 +106497,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ return WRC_Continue; } } - /* Fall thru */ + /* no break */ deliberate_fall_through } case TK_BETWEEN: case TK_EQ: @@ -94009,6 +106511,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ assert( pExpr->pLeft!=0 ); nLeft = sqlite3ExprVectorSize(pExpr->pLeft); if( pExpr->op==TK_BETWEEN ){ + assert( ExprUseXList(pExpr) ); nRight = sqlite3ExprVectorSize(pExpr->x.pList->a[0].pExpr); if( nRight==nLeft ){ nRight = sqlite3ExprVectorSize(pExpr->x.pList->a[1].pExpr); @@ -94028,11 +106531,13 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ testcase( pExpr->op==TK_ISNOT ); testcase( pExpr->op==TK_BETWEEN ); sqlite3ErrorMsg(pParse, "row value misused"); + sqlite3RecordErrorOffsetOfExpr(pParse->db, pExpr); } - break; + break; } } - return (pParse->nErr || pParse->db->mallocFailed) ? WRC_Abort : WRC_Continue; + assert( pParse->db->mallocFailed==0 || pParse->nErr!=0 ); + return pParse->nErr ? WRC_Abort : WRC_Continue; } /* @@ -94057,10 +106562,13 @@ static int resolveAsName( UNUSED_PARAMETER(pParse); if( pE->op==TK_ID ){ - char *zCol = pE->u.zToken; + const char *zCol; + assert( !ExprHasProperty(pE, EP_IntValue) ); + zCol = pE->u.zToken; for(i=0; inExpr; i++){ - char *zAs = pEList->a[i].zName; - if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){ + if( pEList->a[i].fg.eEName==ENAME_NAME + && sqlite3_stricmp(pEList->a[i].zEName, zCol)==0 + ){ return i+1; } } @@ -94107,8 +106615,8 @@ static int resolveOrderByTermToExprList( nc.pParse = pParse; nc.pSrcList = pSelect->pSrc; nc.uNC.pEList = pEList; - nc.ncFlags = NC_AllowAgg|NC_UEList; - nc.nErr = 0; + nc.ncFlags = NC_AllowAgg|NC_UEList|NC_NoSelect; + nc.nNcErr = 0; db = pParse->db; savedSuppErr = db->suppressErr; db->suppressErr = 1; @@ -94137,11 +106645,13 @@ static void resolveOutOfRangeError( Parse *pParse, /* The error context into which to write the error */ const char *zType, /* "ORDER" or "GROUP" */ int i, /* The index (1-based) of the term out of range */ - int mx /* Largest permissible value of i */ + int mx, /* Largest permissible value of i */ + Expr *pError /* Associate the error with the expression */ ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "%r %s BY term out of range - should be " "between 1 and %d", i, zType, mx); + sqlite3RecordErrorOffsetOfExpr(pParse->db, pError); } /* @@ -94177,7 +106687,7 @@ static int resolveCompoundOrderBy( return 1; } for(i=0; inExpr; i++){ - pOrderBy->a[i].done = 0; + pOrderBy->a[i].fg.done = 0; } pSelect->pNext = 0; while( pSelect->pPrior ){ @@ -94192,43 +106702,60 @@ static int resolveCompoundOrderBy( for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ int iCol = -1; Expr *pE, *pDup; - if( pItem->done ) continue; - pE = sqlite3ExprSkipCollate(pItem->pExpr); + if( pItem->fg.done ) continue; + pE = sqlite3ExprSkipCollateAndLikely(pItem->pExpr); + if( NEVER(pE==0) ) continue; if( sqlite3ExprIsInteger(pE, &iCol) ){ if( iCol<=0 || iCol>pEList->nExpr ){ - resolveOutOfRangeError(pParse, "ORDER", i+1, pEList->nExpr); + resolveOutOfRangeError(pParse, "ORDER", i+1, pEList->nExpr, pE); return 1; } }else{ iCol = resolveAsName(pParse, pEList, pE); if( iCol==0 ){ + /* Now test if expression pE matches one of the values returned + ** by pSelect. In the usual case this is done by duplicating the + ** expression, resolving any symbols in it, and then comparing + ** it against each expression returned by the SELECT statement. + ** Once the comparisons are finished, the duplicate expression + ** is deleted. + ** + ** If this is running as part of an ALTER TABLE operation and + ** the symbols resolve successfully, also resolve the symbols in the + ** actual expression. This allows the code in alter.c to modify + ** column references within the ORDER BY expression as required. */ pDup = sqlite3ExprDup(db, pE, 0); if( !db->mallocFailed ){ assert(pDup); iCol = resolveOrderByTermToExprList(pParse, pSelect, pDup); + if( IN_RENAME_OBJECT && iCol>0 ){ + resolveOrderByTermToExprList(pParse, pSelect, pE); + } } sqlite3ExprDelete(db, pDup); } } if( iCol>0 ){ /* Convert the ORDER BY term into an integer column number iCol, - ** taking care to preserve the COLLATE clause if it exists */ - Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0); - if( pNew==0 ) return 1; - pNew->flags |= EP_IntValue; - pNew->u.iValue = iCol; - if( pItem->pExpr==pE ){ - pItem->pExpr = pNew; - }else{ - Expr *pParent = pItem->pExpr; - assert( pParent->op==TK_COLLATE ); - while( pParent->pLeft->op==TK_COLLATE ) pParent = pParent->pLeft; - assert( pParent->pLeft==pE ); - pParent->pLeft = pNew; + ** taking care to preserve the COLLATE clause if it exists. */ + if( !IN_RENAME_OBJECT ){ + Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0); + if( pNew==0 ) return 1; + pNew->flags |= EP_IntValue; + pNew->u.iValue = iCol; + if( pItem->pExpr==pE ){ + pItem->pExpr = pNew; + }else{ + Expr *pParent = pItem->pExpr; + assert( pParent->op==TK_COLLATE ); + while( pParent->pLeft->op==TK_COLLATE ) pParent = pParent->pLeft; + assert( pParent->pLeft==pE ); + pParent->pLeft = pNew; + } + sqlite3ExprDelete(db, pE); + pItem->u.x.iOrderByCol = (u16)iCol; } - sqlite3ExprDelete(db, pE); - pItem->u.x.iOrderByCol = (u16)iCol; - pItem->done = 1; + pItem->fg.done = 1; }else{ moreToDo = 1; } @@ -94236,7 +106763,7 @@ static int resolveCompoundOrderBy( pSelect = pSelect->pNext; } for(i=0; inExpr; i++){ - if( pOrderBy->a[i].done==0 ){ + if( pOrderBy->a[i].fg.done==0 ){ sqlite3ErrorMsg(pParse, "%r ORDER BY term does not match any " "column in the result set", i+1); return 1; @@ -94266,7 +106793,7 @@ SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy( ExprList *pEList; struct ExprList_item *pItem; - if( pOrderBy==0 || pParse->db->mallocFailed ) return 0; + if( pOrderBy==0 || pParse->db->mallocFailed || IN_RENAME_OBJECT ) return 0; if( pOrderBy->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ sqlite3ErrorMsg(pParse, "too many terms in %s BY clause", zType); return 1; @@ -94276,16 +106803,45 @@ SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy( for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ if( pItem->u.x.iOrderByCol ){ if( pItem->u.x.iOrderByCol>pEList->nExpr ){ - resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr); + resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr, 0); return 1; } - resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr, - zType,0); + resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr,0); } } return 0; } +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** Walker callback for windowRemoveExprFromSelect(). +*/ +static int resolveRemoveWindowsCb(Walker *pWalker, Expr *pExpr){ + UNUSED_PARAMETER(pWalker); + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + Window *pWin = pExpr->y.pWin; + sqlite3WindowUnlinkFromSelect(pWin); + } + return WRC_Continue; +} + +/* +** Remove any Window objects owned by the expression pExpr from the +** Select.pWin list of Select object pSelect. +*/ +static void windowRemoveExprFromSelect(Select *pSelect, Expr *pExpr){ + if( pSelect->pWin ){ + Walker sWalker; + memset(&sWalker, 0, sizeof(Walker)); + sWalker.xExprCallback = resolveRemoveWindowsCb; + sWalker.u.pSelect = pSelect; + sqlite3WalkExpr(&sWalker, pExpr); + } +} +#else +# define windowRemoveExprFromSelect(a, b) +#endif /* SQLITE_OMIT_WINDOWFUNC */ + /* ** pOrderBy is an ORDER BY or GROUP BY clause in SELECT statement pSelect. ** The Name context of the SELECT statement is pNC. zType is either @@ -94316,12 +106872,13 @@ static int resolveOrderGroupBy( Parse *pParse; /* Parsing context */ int nResult; /* Number of terms in the result set */ - if( pOrderBy==0 ) return 0; + assert( pOrderBy!=0 ); nResult = pSelect->pEList->nExpr; pParse = pNC->pParse; for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ Expr *pE = pItem->pExpr; - Expr *pE2 = sqlite3ExprSkipCollate(pE); + Expr *pE2 = sqlite3ExprSkipCollateAndLikely(pE); + if( NEVER(pE2==0) ) continue; if( zType[0]!='G' ){ iCol = resolveAsName(pParse, pSelect->pEList, pE2); if( iCol>0 ){ @@ -94338,7 +106895,7 @@ static int resolveOrderGroupBy( ** number so that sqlite3ResolveOrderGroupBy() will convert the ** order-by term to a copy of the result-set expression */ if( iCol<1 || iCol>0xffff ){ - resolveOutOfRangeError(pParse, zType, i+1, nResult); + resolveOutOfRangeError(pParse, zType, i+1, nResult, pE2); return 1; } pItem->u.x.iOrderByCol = (u16)iCol; @@ -94352,6 +106909,10 @@ static int resolveOrderGroupBy( } for(j=0; jpEList->nExpr; j++){ if( sqlite3ExprCompare(0, pE, pSelect->pEList->a[j].pExpr, -1)==0 ){ + /* Since this expression is being changed into a reference + ** to an identical expression in the result set, remove all Window + ** objects belonging to the expression from the Select.pWin list. */ + windowRemoveExprFromSelect(pSelect, pE); pItem->u.x.iOrderByCol = j+1; } } @@ -94372,7 +106933,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ExprList *pGroupBy; /* The GROUP BY clause */ Select *pLeftmost; /* Left-most of SELECT of a compound */ sqlite3 *db; /* Database connection */ - + assert( p!=0 ); if( p->selFlags & SF_Resolved ){ @@ -94392,7 +106953,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ */ if( (p->selFlags & SF_Expanded)==0 ){ sqlite3SelectPrep(pParse, p, pOuterNC); - return (pParse->nErr || db->mallocFailed) ? WRC_Abort : WRC_Prune; + return pParse->nErr ? WRC_Abort : WRC_Prune; } isCompound = p->pPrior!=0; @@ -94401,13 +106962,16 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ while( p ){ assert( (p->selFlags & SF_Expanded)!=0 ); assert( (p->selFlags & SF_Resolved)==0 ); + assert( db->suppressErr==0 ); /* SF_Resolved not set if errors suppressed */ p->selFlags |= SF_Resolved; + /* Resolve the expressions in the LIMIT and OFFSET clauses. These ** are not allowed to refer to any names, so pass an empty NameContext. */ memset(&sNC, 0, sizeof(sNC)); sNC.pParse = pParse; + sNC.pWinSelect = p; if( sqlite3ResolveExprNames(&sNC, p->pLimit) ){ return WRC_Abort; } @@ -94425,63 +106989,58 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ pSub->pOrderBy = p->pOrderBy; p->pOrderBy = 0; } - - /* Recursively resolve names in all subqueries + + /* Recursively resolve names in all subqueries in the FROM clause */ for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - if( pItem->pSelect ){ - NameContext *pNC; /* Used to iterate name contexts */ - int nRef = 0; /* Refcount for pOuterNC and outer contexts */ + SrcItem *pItem = &p->pSrc->a[i]; + if( pItem->pSelect && (pItem->pSelect->selFlags & SF_Resolved)==0 ){ + int nRef = pOuterNC ? pOuterNC->nRef : 0; const char *zSavedContext = pParse->zAuthContext; - /* Count the total number of references to pOuterNC and all of its - ** parent contexts. After resolving references to expressions in - ** pItem->pSelect, check if this value has changed. If so, then - ** SELECT statement pItem->pSelect must be correlated. Set the - ** pItem->fg.isCorrelated flag if this is the case. */ - for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef; - if( pItem->zName ) pParse->zAuthContext = pItem->zName; sqlite3ResolveSelectNames(pParse, pItem->pSelect, pOuterNC); pParse->zAuthContext = zSavedContext; - if( pParse->nErr || db->mallocFailed ) return WRC_Abort; + if( pParse->nErr ) return WRC_Abort; + assert( db->mallocFailed==0 ); - for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef; - assert( pItem->fg.isCorrelated==0 && nRef<=0 ); - pItem->fg.isCorrelated = (nRef!=0); + /* If the number of references to the outer context changed when + ** expressions in the sub-select were resolved, the sub-select + ** is correlated. It is not required to check the refcount on any + ** but the innermost outer context object, as lookupName() increments + ** the refcount on all contexts between the current one and the + ** context containing the column when it resolves a name. */ + if( pOuterNC ){ + assert( pItem->fg.isCorrelated==0 && pOuterNC->nRef>=nRef ); + pItem->fg.isCorrelated = (pOuterNC->nRef>nRef); + } } } - + /* Set up the local name-context to pass to sqlite3ResolveExprNames() to ** resolve the result-set expression list. */ - sNC.ncFlags = NC_AllowAgg; + sNC.ncFlags = NC_AllowAgg|NC_AllowWin; sNC.pSrcList = p->pSrc; sNC.pNext = pOuterNC; - + /* Resolve names in the result set. */ if( sqlite3ResolveExprListNames(&sNC, p->pEList) ) return WRC_Abort; - - /* If there are no aggregate functions in the result-set, and no GROUP BY + sNC.ncFlags &= ~NC_AllowWin; + + /* If there are no aggregate functions in the result-set, and no GROUP BY ** expression, do not allow aggregates in any of the other expressions. */ assert( (p->selFlags & SF_Aggregate)==0 ); pGroupBy = p->pGroupBy; if( pGroupBy || (sNC.ncFlags & NC_HasAgg)!=0 ){ assert( NC_MinMaxAgg==SF_MinMaxAgg ); - p->selFlags |= SF_Aggregate | (sNC.ncFlags&NC_MinMaxAgg); + assert( NC_OrderAgg==SF_OrderByReqd ); + p->selFlags |= SF_Aggregate | (sNC.ncFlags&(NC_MinMaxAgg|NC_OrderAgg)); }else{ sNC.ncFlags &= ~NC_AllowAgg; } - - /* If a HAVING clause is present, then there must be a GROUP BY clause. - */ - if( p->pHaving && !pGroupBy ){ - sqlite3ErrorMsg(pParse, "a GROUP BY clause is required before HAVING"); - return WRC_Abort; - } - + /* Add the output column list to the name-context before parsing the ** other expressions in the SELECT statement. This is so that ** expressions in the WHERE clause (etc.) can refer to expressions by @@ -94490,29 +107049,48 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** Minor point: If this is the case, then the expression will be ** re-evaluated for each reference to it. */ - assert( (sNC.ncFlags & (NC_UAggInfo|NC_UUpsert))==0 ); + assert( (sNC.ncFlags & (NC_UAggInfo|NC_UUpsert|NC_UBaseReg))==0 ); sNC.uNC.pEList = p->pEList; sNC.ncFlags |= NC_UEList; - if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort; + if( p->pHaving ){ + if( (p->selFlags & SF_Aggregate)==0 ){ + sqlite3ErrorMsg(pParse, "HAVING clause on a non-aggregate query"); + return WRC_Abort; + } + if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort; + } if( sqlite3ResolveExprNames(&sNC, p->pWhere) ) return WRC_Abort; /* Resolve names in table-valued-function arguments */ for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; + SrcItem *pItem = &p->pSrc->a[i]; if( pItem->fg.isTabFunc - && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg) + && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg) ){ return WRC_Abort; } } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( IN_RENAME_OBJECT ){ + Window *pWin; + for(pWin=p->pWinDefn; pWin; pWin=pWin->pNextWin){ + if( sqlite3ResolveExprListNames(&sNC, pWin->pOrderBy) + || sqlite3ResolveExprListNames(&sNC, pWin->pPartition) + ){ + return WRC_Abort; + } + } + } +#endif + /* The ORDER BY and GROUP BY clauses may not refer to terms in - ** outer queries + ** outer queries */ sNC.pNext = 0; - sNC.ncFlags |= NC_AllowAgg; + sNC.ncFlags |= NC_AllowAgg|NC_AllowWin; - /* If this is a converted compound query, move the ORDER BY clause from + /* If this is a converted compound query, move the ORDER BY clause from ** the sub-query back to the parent query. At this point each term ** within the ORDER BY clause has been transformed to an integer value. ** These integers will be replaced by copies of the corresponding result @@ -94533,7 +107111,8 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** is not detected until much later, and so we need to go ahead and ** resolve those symbols on the incorrect ORDER BY for consistency. */ - if( isCompound<=nCompound /* Defer right-most ORDER BY of a compound */ + if( p->pOrderBy!=0 + && isCompound<=nCompound /* Defer right-most ORDER BY of a compound */ && resolveOrderGroupBy(&sNC, p, p->pOrderBy, "ORDER") ){ return WRC_Abort; @@ -94541,13 +107120,14 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ if( db->mallocFailed ){ return WRC_Abort; } - - /* Resolve the GROUP BY clause. At the same time, make sure + sNC.ncFlags &= ~NC_AllowWin; + + /* Resolve the GROUP BY clause. At the same time, make sure ** the GROUP BY clause does not contain aggregate functions. */ if( pGroupBy ){ struct ExprList_item *pItem; - + if( resolveOrderGroupBy(&sNC, p, pGroupBy, "GROUP") || db->mallocFailed ){ return WRC_Abort; } @@ -94589,7 +107169,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** checking on function usage and set a flag if any aggregate functions ** are seen. ** -** To resolve table columns references we look for nodes (or subtrees) of the +** To resolve table columns references we look for nodes (or subtrees) of the ** form X.Y.Z or Y.Z or just Z where ** ** X: The name of a database. Ex: "main" or "temp" or @@ -94621,7 +107201,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** ** SELECT a+b AS x, c+d AS y FROM t1 ORDER BY a+b; ** -** Function calls are checked to make sure that the function is +** Function calls are checked to make sure that the function is ** defined and that the correct number of arguments are specified. ** If the function is an aggregate function, then the NC_HasAgg flag is ** set and the opcode is changed from TK_FUNCTION to TK_AGG_FUNCTION. @@ -94631,19 +107211,19 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** An error message is left in pParse if anything is amiss. The number ** if errors is returned. */ -SQLITE_PRIVATE int sqlite3ResolveExprNames( +SQLITE_PRIVATE int sqlite3ResolveExprNames( NameContext *pNC, /* Namespace to resolve expressions in. */ Expr *pExpr /* The expression to be analyzed. */ ){ - u16 savedHasAgg; + int savedHasAgg; Walker w; if( pExpr==0 ) return SQLITE_OK; - savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg); - pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg); + savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); + pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); w.pParse = pNC->pParse; w.xExprCallback = resolveExprStep; - w.xSelectCallback = resolveSelectStep; + w.xSelectCallback = (pNC->ncFlags & NC_NoSelect) ? 0 : resolveSelectStep; w.xSelectCallback2 = 0; w.u.pNC = pNC; #if SQLITE_MAX_EXPR_DEPTH>0 @@ -94652,15 +107232,18 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames( return SQLITE_ERROR; } #endif - sqlite3WalkExpr(&w, pExpr); + assert( pExpr!=0 ); + sqlite3WalkExprNN(&w, pExpr); #if SQLITE_MAX_EXPR_DEPTH>0 w.pParse->nHeight -= pExpr->nHeight; #endif - if( pNC->ncFlags & NC_HasAgg ){ - ExprSetProperty(pExpr, EP_Agg); - } + assert( EP_Agg==NC_HasAgg ); + assert( EP_Win==NC_HasWin ); + testcase( pNC->ncFlags & NC_HasAgg ); + testcase( pNC->ncFlags & NC_HasWin ); + ExprSetProperty(pExpr, pNC->ncFlags & (NC_HasAgg|NC_HasWin) ); pNC->ncFlags |= savedHasAgg; - return pNC->nErr>0 || w.pParse->nErr>0; + return pNC->nNcErr>0 || w.pParse->nErr>0; } /* @@ -94668,22 +107251,53 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames( ** just like sqlite3ResolveExprNames() except that it works for an expression ** list rather than a single expression. */ -SQLITE_PRIVATE int sqlite3ResolveExprListNames( +SQLITE_PRIVATE int sqlite3ResolveExprListNames( NameContext *pNC, /* Namespace to resolve expressions in. */ ExprList *pList /* The expression list to be analyzed. */ ){ int i; - if( pList ){ - for(i=0; inExpr; i++){ - if( sqlite3ResolveExprNames(pNC, pList->a[i].pExpr) ) return WRC_Abort; + int savedHasAgg = 0; + Walker w; + if( pList==0 ) return WRC_Continue; + w.pParse = pNC->pParse; + w.xExprCallback = resolveExprStep; + w.xSelectCallback = resolveSelectStep; + w.xSelectCallback2 = 0; + w.u.pNC = pNC; + savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); + pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); + for(i=0; inExpr; i++){ + Expr *pExpr = pList->a[i].pExpr; + if( pExpr==0 ) continue; +#if SQLITE_MAX_EXPR_DEPTH>0 + w.pParse->nHeight += pExpr->nHeight; + if( sqlite3ExprCheckHeight(w.pParse, w.pParse->nHeight) ){ + return WRC_Abort; } +#endif + sqlite3WalkExprNN(&w, pExpr); +#if SQLITE_MAX_EXPR_DEPTH>0 + w.pParse->nHeight -= pExpr->nHeight; +#endif + assert( EP_Agg==NC_HasAgg ); + assert( EP_Win==NC_HasWin ); + testcase( pNC->ncFlags & NC_HasAgg ); + testcase( pNC->ncFlags & NC_HasWin ); + if( pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg) ){ + ExprSetProperty(pExpr, pNC->ncFlags & (NC_HasAgg|NC_HasWin) ); + savedHasAgg |= pNC->ncFlags & + (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); + pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg); + } + if( w.pParse->nErr>0 ) return WRC_Abort; } + pNC->ncFlags |= savedHasAgg; return WRC_Continue; } /* ** Resolve all names in all expressions of a SELECT and in all -** decendents of the SELECT, including compounds off of p->pPrior, +** descendants of the SELECT, including compounds off of p->pPrior, ** subqueries in expressions, and subqueries used as FROM clause ** terms. ** @@ -94710,38 +107324,56 @@ SQLITE_PRIVATE void sqlite3ResolveSelectNames( } /* -** Resolve names in expressions that can only reference a single table: +** Resolve names in expressions that can only reference a single table +** or which cannot reference any tables at all. Examples: ** -** * CHECK constraints -** * WHERE clauses on partial indices +** "type" flag +** ------------ +** (1) CHECK constraints NC_IsCheck +** (2) WHERE clauses on partial indices NC_PartIdx +** (3) Expressions in indexes on expressions NC_IdxExpr +** (4) Expression arguments to VACUUM INTO. 0 +** (5) GENERATED ALWAYS as expressions NC_GenCol ** -** The Expr.iTable value for Expr.op==TK_COLUMN nodes of the expression -** is set to -1 and the Expr.iColumn value is set to the column number. +** In all cases except (4), the Expr.iTable value for Expr.op==TK_COLUMN +** nodes of the expression is set to -1 and the Expr.iColumn value is +** set to the column number. In case (4), TK_COLUMN nodes cause an error. ** ** Any errors cause an error message to be set in pParse. */ -SQLITE_PRIVATE void sqlite3ResolveSelfReference( - Parse *pParse, /* Parsing context */ - Table *pTab, /* The table being referenced */ - int type, /* NC_IsCheck or NC_PartIdx or NC_IdxExpr */ - Expr *pExpr, /* Expression to resolve. May be NULL. */ - ExprList *pList /* Expression list to resolve. May be NULL. */ +SQLITE_PRIVATE int sqlite3ResolveSelfReference( + Parse *pParse, /* Parsing context */ + Table *pTab, /* The table being referenced, or NULL */ + int type, /* NC_IsCheck, NC_PartIdx, NC_IdxExpr, NC_GenCol, or 0 */ + Expr *pExpr, /* Expression to resolve. May be NULL. */ + ExprList *pList /* Expression list to resolve. May be NULL. */ ){ SrcList sSrc; /* Fake SrcList for pParse->pNewTable */ NameContext sNC; /* Name context for pParse->pNewTable */ + int rc; - assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr ); + assert( type==0 || pTab!=0 ); + assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr + || type==NC_GenCol || pTab==0 ); memset(&sNC, 0, sizeof(sNC)); memset(&sSrc, 0, sizeof(sSrc)); - sSrc.nSrc = 1; - sSrc.a[0].zName = pTab->zName; - sSrc.a[0].pTab = pTab; - sSrc.a[0].iCursor = -1; + if( pTab ){ + sSrc.nSrc = 1; + sSrc.a[0].zName = pTab->zName; + sSrc.a[0].pTab = pTab; + sSrc.a[0].iCursor = -1; + if( pTab->pSchema!=pParse->db->aDb[1].pSchema ){ + /* Cause EP_FromDDL to be set on TK_FUNCTION nodes of non-TEMP + ** schema elements */ + type |= NC_FromDDL; + } + } sNC.pParse = pParse; sNC.pSrcList = &sSrc; - sNC.ncFlags = type; - if( sqlite3ResolveExprNames(&sNC, pExpr) ) return; - if( pList ) sqlite3ResolveExprListNames(&sNC, pList); + sNC.ncFlags = type | NC_IsDDL; + if( (rc = sqlite3ResolveExprNames(&sNC, pExpr))!=SQLITE_OK ) return rc; + if( pList ) rc = sqlite3ResolveExprListNames(&sNC, pList); + return rc; } /************** End of resolve.c *********************************************/ @@ -94769,16 +107401,16 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piToFree); /* ** Return the affinity character for a single column of a table. */ -SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){ - assert( iColnCol ); - return iCol>=0 ? pTab->aCol[iCol].affinity : SQLITE_AFF_INTEGER; +SQLITE_PRIVATE char sqlite3TableColumnAffinity(const Table *pTab, int iCol){ + if( iCol<0 || NEVER(iCol>=pTab->nCol) ) return SQLITE_AFF_INTEGER; + return pTab->aCol[iCol].affinity; } /* ** Return the 'affinity' of the expression pExpr if any. ** ** If pExpr is a column, a reference to a column via an 'AS' alias, -** or a sub-select with a column as the return value, then the +** or a sub-select with a column as the return value, then the ** affinity of that column is returned. Otherwise, 0x00 is returned, ** indicating no affinity for the expression. ** @@ -94790,32 +107422,122 @@ SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){ ** SELECT a AS b FROM t1 WHERE b; ** SELECT * FROM t1 WHERE (select a from t1); */ -SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){ +SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr){ int op; - pExpr = sqlite3ExprSkipCollate(pExpr); - if( pExpr->flags & EP_Generic ) return 0; op = pExpr->op; - if( op==TK_SELECT ){ - assert( pExpr->flags&EP_xIsSelect ); - return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr); - } - if( op==TK_REGISTER ) op = pExpr->op2; + while( 1 /* exit-by-break */ ){ + if( op==TK_COLUMN || (op==TK_AGG_COLUMN && pExpr->y.pTab!=0) ){ + assert( ExprUseYTab(pExpr) ); + assert( pExpr->y.pTab!=0 ); + return sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn); + } + if( op==TK_SELECT ){ + assert( ExprUseXSelect(pExpr) ); + assert( pExpr->x.pSelect!=0 ); + assert( pExpr->x.pSelect->pEList!=0 ); + assert( pExpr->x.pSelect->pEList->a[0].pExpr!=0 ); + return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr); + } #ifndef SQLITE_OMIT_CAST - if( op==TK_CAST ){ - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - return sqlite3AffinityType(pExpr->u.zToken, 0); - } + if( op==TK_CAST ){ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + return sqlite3AffinityType(pExpr->u.zToken, 0); + } #endif - if( (op==TK_AGG_COLUMN || op==TK_COLUMN) && pExpr->pTab ){ - return sqlite3TableColumnAffinity(pExpr->pTab, pExpr->iColumn); + if( op==TK_SELECT_COLUMN ){ + assert( pExpr->pLeft!=0 && ExprUseXSelect(pExpr->pLeft) ); + assert( pExpr->iColumn < pExpr->iTable ); + assert( pExpr->iColumn >= 0 ); + assert( pExpr->iTable==pExpr->pLeft->x.pSelect->pEList->nExpr ); + return sqlite3ExprAffinity( + pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr + ); + } + if( op==TK_VECTOR ){ + assert( ExprUseXList(pExpr) ); + return sqlite3ExprAffinity(pExpr->x.pList->a[0].pExpr); + } + if( ExprHasProperty(pExpr, EP_Skip|EP_IfNullRow) ){ + assert( pExpr->op==TK_COLLATE + || pExpr->op==TK_IF_NULL_ROW + || (pExpr->op==TK_REGISTER && pExpr->op2==TK_IF_NULL_ROW) ); + pExpr = pExpr->pLeft; + op = pExpr->op; + continue; + } + if( op!=TK_REGISTER || (op = pExpr->op2)==TK_REGISTER ) break; } - if( op==TK_SELECT_COLUMN ){ - assert( pExpr->pLeft->flags&EP_xIsSelect ); - return sqlite3ExprAffinity( - pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr - ); - } - return pExpr->affinity; + return pExpr->affExpr; +} + +/* +** Make a guess at all the possible datatypes of the result that could +** be returned by an expression. Return a bitmask indicating the answer: +** +** 0x01 Numeric +** 0x02 Text +** 0x04 Blob +** +** If the expression must return NULL, then 0x00 is returned. +*/ +SQLITE_PRIVATE int sqlite3ExprDataType(const Expr *pExpr){ + while( pExpr ){ + switch( pExpr->op ){ + case TK_COLLATE: + case TK_IF_NULL_ROW: + case TK_UPLUS: { + pExpr = pExpr->pLeft; + break; + } + case TK_NULL: { + pExpr = 0; + break; + } + case TK_STRING: { + return 0x02; + } + case TK_BLOB: { + return 0x04; + } + case TK_CONCAT: { + return 0x06; + } + case TK_VARIABLE: + case TK_AGG_FUNCTION: + case TK_FUNCTION: { + return 0x07; + } + case TK_COLUMN: + case TK_AGG_COLUMN: + case TK_SELECT: + case TK_CAST: + case TK_SELECT_COLUMN: + case TK_VECTOR: { + int aff = sqlite3ExprAffinity(pExpr); + if( aff>=SQLITE_AFF_NUMERIC ) return 0x05; + if( aff==SQLITE_AFF_TEXT ) return 0x06; + return 0x07; + } + case TK_CASE: { + int res = 0; + int ii; + ExprList *pList = pExpr->x.pList; + assert( ExprUseXList(pExpr) && pList!=0 ); + assert( pList->nExpr > 0); + for(ii=1; iinExpr; ii+=2){ + res |= sqlite3ExprDataType(pList->a[ii].pExpr); + } + if( pList->nExpr % 2 ){ + res |= sqlite3ExprDataType(pList->a[pList->nExpr-1].pExpr); + } + return res; + } + default: { + return 0x01; + } + } /* End of switch(op) */ + } /* End of while(pExpr) */ + return 0x00; } /* @@ -94827,7 +107549,7 @@ SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){ ** and the pExpr parameter is returned unchanged. */ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken( - Parse *pParse, /* Parsing context */ + const Parse *pParse, /* Parsing context */ Expr *pExpr, /* Add the "COLLATE" clause to this expression */ const Token *pCollName, /* Name of collating sequence */ int dequote /* True to dequote pCollName */ @@ -94842,7 +107564,11 @@ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken( } return pExpr; } -SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, const char *zC){ +SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString( + const Parse *pParse, /* Parsing context */ + Expr *pExpr, /* Add the "COLLATE" clause to this expression */ + const char *zC /* The collating sequence name */ +){ Token s; assert( zC!=0 ); sqlite3TokenInit(&s, (char*)zC); @@ -94850,13 +107576,25 @@ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, con } /* -** Skip over any TK_COLLATE operators and any unlikely() -** or likelihood() function at the root of an expression. +** Skip over any TK_COLLATE operators. */ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){ while( pExpr && ExprHasProperty(pExpr, EP_Skip) ){ + assert( pExpr->op==TK_COLLATE ); + pExpr = pExpr->pLeft; + } + return pExpr; +} + +/* +** Skip over any TK_COLLATE operators and/or any unlikely() +** or likelihood() or likely() functions at the root of an +** expression. +*/ +SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){ + while( pExpr && ExprHasProperty(pExpr, EP_Skip|EP_Unlikely) ){ if( ExprHasProperty(pExpr, EP_Unlikely) ){ - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); + assert( ExprUseXList(pExpr) ); assert( pExpr->x.pList->nExpr>0 ); assert( pExpr->op==TK_FUNCTION ); pExpr = pExpr->x.pList->a[0].pExpr; @@ -94864,7 +107602,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){ assert( pExpr->op==TK_COLLATE ); pExpr = pExpr->pLeft; } - } + } return pExpr; } @@ -94882,32 +107620,37 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){ ** COLLATE operators take first precedence. Left operands take ** precedence over right operands. */ -SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ +SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr){ sqlite3 *db = pParse->db; CollSeq *pColl = 0; - Expr *p = pExpr; + const Expr *p = pExpr; while( p ){ int op = p->op; - if( p->flags & EP_Generic ) break; + if( op==TK_REGISTER ) op = p->op2; + if( (op==TK_AGG_COLUMN && p->y.pTab!=0) + || op==TK_COLUMN || op==TK_TRIGGER + ){ + int j; + assert( ExprUseYTab(p) ); + assert( p->y.pTab!=0 ); + if( (j = p->iColumn)>=0 ){ + const char *zColl = sqlite3ColumnColl(&p->y.pTab->aCol[j]); + pColl = sqlite3FindCollSeq(db, ENC(db), zColl, 0); + } + break; + } if( op==TK_CAST || op==TK_UPLUS ){ p = p->pLeft; continue; } - if( op==TK_COLLATE || (op==TK_REGISTER && p->op2==TK_COLLATE) ){ - pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken); - break; + if( op==TK_VECTOR ){ + assert( ExprUseXList(p) ); + p = p->x.pList->a[0].pExpr; + continue; } - if( (op==TK_AGG_COLUMN || op==TK_COLUMN - || op==TK_REGISTER || op==TK_TRIGGER) - && p->pTab!=0 - ){ - /* op==TK_REGISTER && p->pTab!=0 happens when pExpr was originally - ** a TK_COLUMN but was previously evaluated and cached in a register */ - int j = p->iColumn; - if( j>=0 ){ - const char *zColl = p->pTab->aCol[j].zColl; - pColl = sqlite3FindCollSeq(db, ENC(db), zColl, 0); - } + if( op==TK_COLLATE ){ + assert( !ExprHasProperty(p, EP_IntValue) ); + pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken); break; } if( p->flags & EP_Collate ){ @@ -94916,13 +107659,10 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ }else{ Expr *pNext = p->pRight; /* The Expr.x union is never used at the same time as Expr.pRight */ - assert( p->x.pList==0 || p->pRight==0 ); - /* p->flags holds EP_Collate and p->pLeft->flags does not. And - ** p->x.pSelect cannot. So if p->x.pLeft exists, it must hold at - ** least one EP_Collate. Thus the following two ALWAYS. */ - if( p->x.pList!=0 && ALWAYS(!ExprHasProperty(p, EP_xIsSelect)) ){ + assert( !ExprUseXList(p) || p->x.pList==0 || p->pRight==0 ); + if( ExprUseXList(p) && p->x.pList!=0 && !db->mallocFailed ){ int i; - for(i=0; ALWAYS(ix.pList->nExpr); i++){ + for(i=0; ix.pList->nExpr; i++){ if( ExprHasProperty(p->x.pList->a[i].pExpr, EP_Collate) ){ pNext = p->x.pList->a[i].pExpr; break; @@ -94935,7 +107675,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ break; } } - if( sqlite3CheckCollSeq(pParse, pColl) ){ + if( sqlite3CheckCollSeq(pParse, pColl) ){ pColl = 0; } return pColl; @@ -94944,14 +107684,14 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ /* ** Return the collation sequence for the expression pExpr. If ** there is no defined collating sequence, return a pointer to the -** defautl collation sequence. +** default collation sequence. ** ** See also: sqlite3ExprCollSeq() ** ** The sqlite3ExprCollSeq() routine works the same except that it ** returns NULL if there is no defined collation. */ -SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){ +SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr){ CollSeq *p = sqlite3ExprCollSeq(pParse, pExpr); if( p==0 ) p = pParse->db->pDfltColl; assert( p!=0 ); @@ -94961,7 +107701,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){ /* ** Return TRUE if the two expressions have equivalent collating sequences. */ -SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){ +SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, const Expr *pE1, const Expr *pE2){ CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pE1); CollSeq *pColl2 = sqlite3ExprNNCollSeq(pParse, pE2); return sqlite3StrICmp(pColl1->zName, pColl2->zName)==0; @@ -94972,9 +107712,9 @@ SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){ ** type affinity of the other operand. This routine returns the ** type affinity that should be used for the comparison operator. */ -SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){ +SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2){ char aff1 = sqlite3ExprAffinity(pExpr); - if( aff1 && aff2 ){ + if( aff1>SQLITE_AFF_NONE && aff2>SQLITE_AFF_NONE ){ /* Both sides of the comparison are columns. If one has numeric ** affinity, use that. Otherwise use no affinity. */ @@ -94983,15 +107723,10 @@ SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){ }else{ return SQLITE_AFF_BLOB; } - }else if( !aff1 && !aff2 ){ - /* Neither side of the comparison is a column. Compare the - ** results directly. - */ - return SQLITE_AFF_BLOB; }else{ /* One side is a column, the other is not. Use the columns affinity. */ - assert( aff1==0 || aff2==0 ); - return (aff1 + aff2); + assert( aff1<=SQLITE_AFF_NONE || aff2<=SQLITE_AFF_NONE ); + return (aff1<=SQLITE_AFF_NONE ? aff2 : aff1) | SQLITE_AFF_NONE; } } @@ -94999,7 +107734,7 @@ SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){ ** pExpr is a comparison operator. Return the type affinity that should ** be applied to both operands prior to doing the comparison. */ -static char comparisonAffinity(Expr *pExpr){ +static char comparisonAffinity(const Expr *pExpr){ char aff; assert( pExpr->op==TK_EQ || pExpr->op==TK_IN || pExpr->op==TK_LT || pExpr->op==TK_GT || pExpr->op==TK_GE || pExpr->op==TK_LE || @@ -95008,7 +107743,7 @@ static char comparisonAffinity(Expr *pExpr){ aff = sqlite3ExprAffinity(pExpr->pLeft); if( pExpr->pRight ){ aff = sqlite3CompareAffinity(pExpr->pRight, aff); - }else if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + }else if( ExprUseXSelect(pExpr) ){ aff = sqlite3CompareAffinity(pExpr->x.pSelect->pEList->a[0].pExpr, aff); }else if( aff==0 ){ aff = SQLITE_AFF_BLOB; @@ -95022,23 +107757,26 @@ static char comparisonAffinity(Expr *pExpr){ ** if the index with affinity idx_affinity may be used to implement ** the comparison in pExpr. */ -SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){ +SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity){ char aff = comparisonAffinity(pExpr); - switch( aff ){ - case SQLITE_AFF_BLOB: - return 1; - case SQLITE_AFF_TEXT: - return idx_affinity==SQLITE_AFF_TEXT; - default: - return sqlite3IsNumericAffinity(idx_affinity); + if( affpRight, p->pLeft); + }else{ + return sqlite3BinaryCompareCollSeq(pParse, p->pLeft, p->pRight); + } +} + /* ** Generate code for a comparison operator. */ @@ -95086,13 +107840,19 @@ static int codeCompare( int opcode, /* The comparison opcode */ int in1, int in2, /* Register holding operands */ int dest, /* Jump here if true. */ - int jumpIfNull /* If true, jump if either operand is NULL */ + int jumpIfNull, /* If true, jump if either operand is NULL */ + int isCommuted /* The comparison has been commuted */ ){ int p5; int addr; CollSeq *p4; - p4 = sqlite3BinaryCompareCollSeq(pParse, pLeft, pRight); + if( pParse->nErr ) return 0; + if( isCommuted ){ + p4 = sqlite3BinaryCompareCollSeq(pParse, pRight, pLeft); + }else{ + p4 = sqlite3BinaryCompareCollSeq(pParse, pLeft, pRight); + } p5 = binaryCompareP5(pLeft, pRight, jumpIfNull); addr = sqlite3VdbeAddOp4(pParse->pVdbe, opcode, in2, dest, in1, (void*)p4, P4_COLLSEQ); @@ -95109,22 +107869,24 @@ static int codeCompare( ** But a TK_SELECT might be either a vector or a scalar. It is only ** considered a vector if it has two or more result columns. */ -SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr){ +SQLITE_PRIVATE int sqlite3ExprIsVector(const Expr *pExpr){ return sqlite3ExprVectorSize(pExpr)>1; } /* -** If the expression passed as the only argument is of type TK_VECTOR +** If the expression passed as the only argument is of type TK_VECTOR ** return the number of expressions in the vector. Or, if the expression ** is a sub-select, return the number of columns in the sub-select. For ** any other type of expression, return 1. */ -SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr){ +SQLITE_PRIVATE int sqlite3ExprVectorSize(const Expr *pExpr){ u8 op = pExpr->op; if( op==TK_REGISTER ) op = pExpr->op2; if( op==TK_VECTOR ){ + assert( ExprUseXList(pExpr) ); return pExpr->x.pList->nExpr; }else if( op==TK_SELECT ){ + assert( ExprUseXSelect(pExpr) ); return pExpr->x.pSelect->pEList->nExpr; }else{ return 1; @@ -95147,12 +107909,14 @@ SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr){ ** been positioned. */ SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr *pVector, int i){ - assert( iop==TK_ERROR ); if( sqlite3ExprIsVector(pVector) ){ assert( pVector->op2==0 || pVector->op==TK_REGISTER ); if( pVector->op==TK_SELECT || pVector->op2==TK_SELECT ){ + assert( ExprUseXSelect(pVector) ); return pVector->x.pSelect->pEList->a[i].pExpr; }else{ + assert( ExprUseXList(pVector) ); return pVector->x.pList->a[i].pExpr; } } @@ -95164,7 +107928,7 @@ SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr *pVector, int i){ ** sqlite3ExprCode() will generate all necessary code to compute ** the iField-th column of the vector expression pVector. ** -** It is ok for pVector to be a scalar (as long as iField==0). +** It is ok for pVector to be a scalar (as long as iField==0). ** In that case, this routine works like sqlite3ExprDup(). ** ** The caller owns the returned Expr object and is responsible for @@ -95183,11 +107947,12 @@ SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr *pVector, int i){ SQLITE_PRIVATE Expr *sqlite3ExprForVectorField( Parse *pParse, /* Parsing context */ Expr *pVector, /* The vector. List of expressions or a sub-SELECT */ - int iField /* Which column of the vector to return */ + int iField, /* Which column of the vector to return */ + int nField /* Total number of columns in the vector */ ){ Expr *pRet; if( pVector->op==TK_SELECT ){ - assert( pVector->flags & EP_xIsSelect ); + assert( ExprUseXSelect(pVector) ); /* The TK_SELECT_COLUMN Expr node: ** ** pLeft: pVector containing TK_SELECT. Not deleted. @@ -95206,12 +107971,22 @@ SQLITE_PRIVATE Expr *sqlite3ExprForVectorField( */ pRet = sqlite3PExpr(pParse, TK_SELECT_COLUMN, 0, 0); if( pRet ){ + pRet->iTable = nField; pRet->iColumn = iField; pRet->pLeft = pVector; } - assert( pRet==0 || pRet->iTable==0 ); }else{ - if( pVector->op==TK_VECTOR ) pVector = pVector->x.pList->a[iField].pExpr; + if( pVector->op==TK_VECTOR ){ + Expr **ppVector; + assert( ExprUseXList(pVector) ); + ppVector = &pVector->x.pList->a[iField].pExpr; + pVector = *ppVector; + if( IN_RENAME_OBJECT ){ + /* This must be a vector UPDATE inside a trigger */ + *ppVector = 0; + return pVector; + } + } pRet = sqlite3ExprDup(pParse->db, pVector, 0); } return pRet; @@ -95219,7 +107994,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprForVectorField( /* ** If expression pExpr is of type TK_SELECT, generate code to evaluate -** it. Return the register in which the result is stored (or, if the +** it. Return the register in which the result is stored (or, if the ** sub-select returns more than one column, the first in an array ** of registers in which the result is stored). ** @@ -95229,7 +108004,7 @@ static int exprCodeSubselect(Parse *pParse, Expr *pExpr){ int reg = 0; #ifndef SQLITE_OMIT_SUBQUERY if( pExpr->op==TK_SELECT ){ - reg = sqlite3CodeSubselect(pParse, pExpr, 0, 0); + reg = sqlite3CodeSubselect(pParse, pExpr); } #endif return reg; @@ -95241,10 +108016,10 @@ static int exprCodeSubselect(Parse *pParse, Expr *pExpr){ ** the register number of a register that contains the value of ** element iField of the vector. ** -** If pVector is a TK_SELECT expression, then code for it must have +** If pVector is a TK_SELECT expression, then code for it must have ** already been generated using the exprCodeSubselect() routine. In this ** case parameter regSelect should be the first in an array of registers -** containing the results of the sub-select. +** containing the results of the sub-select. ** ** If pVector is of type TK_VECTOR, then code for the requested field ** is generated. In this case (*pRegFree) may be set to the number of @@ -95262,17 +108037,22 @@ static int exprVectorRegister( int *pRegFree /* OUT: Temp register to free */ ){ u8 op = pVector->op; - assert( op==TK_VECTOR || op==TK_REGISTER || op==TK_SELECT ); + assert( op==TK_VECTOR || op==TK_REGISTER || op==TK_SELECT || op==TK_ERROR ); if( op==TK_REGISTER ){ *ppExpr = sqlite3VectorFieldSubexpr(pVector, iField); return pVector->iTable+iField; } if( op==TK_SELECT ){ + assert( ExprUseXSelect(pVector) ); *ppExpr = pVector->x.pSelect->pEList->a[iField].pExpr; return regSelect+iField; } - *ppExpr = pVector->x.pList->a[iField].pExpr; - return sqlite3ExprCodeTemp(pParse, *ppExpr, pRegFree); + if( op==TK_VECTOR ){ + assert( ExprUseXList(pVector) ); + *ppExpr = pVector->x.pList->a[iField].pExpr; + return sqlite3ExprCodeTemp(pParse, *ppExpr, pRegFree); + } + return 0; } /* @@ -95301,38 +108081,44 @@ static void codeVectorCompare( int regLeft = 0; int regRight = 0; u8 opx = op; - int addrDone = sqlite3VdbeMakeLabel(v); + int addrCmp = 0; + int addrDone = sqlite3VdbeMakeLabel(pParse); + int isCommuted = ExprHasProperty(pExpr,EP_Commuted); + assert( !ExprHasVVAProperty(pExpr,EP_Immutable) ); + if( pParse->nErr ) return; if( nLeft!=sqlite3ExprVectorSize(pRight) ){ sqlite3ErrorMsg(pParse, "row value misused"); return; } - assert( pExpr->op==TK_EQ || pExpr->op==TK_NE - || pExpr->op==TK_IS || pExpr->op==TK_ISNOT - || pExpr->op==TK_LT || pExpr->op==TK_GT - || pExpr->op==TK_LE || pExpr->op==TK_GE + assert( pExpr->op==TK_EQ || pExpr->op==TK_NE + || pExpr->op==TK_IS || pExpr->op==TK_ISNOT + || pExpr->op==TK_LT || pExpr->op==TK_GT + || pExpr->op==TK_LE || pExpr->op==TK_GE ); assert( pExpr->op==op || (pExpr->op==TK_IS && op==TK_EQ) || (pExpr->op==TK_ISNOT && op==TK_NE) ); assert( p5==0 || pExpr->op!=op ); assert( p5==SQLITE_NULLEQ || pExpr->op==op ); - p5 |= SQLITE_STOREP2; - if( opx==TK_LE ) opx = TK_LT; - if( opx==TK_GE ) opx = TK_GT; + if( op==TK_LE ) opx = TK_LT; + if( op==TK_GE ) opx = TK_GT; + if( op==TK_NE ) opx = TK_EQ; regLeft = exprCodeSubselect(pParse, pLeft); regRight = exprCodeSubselect(pParse, pRight); + sqlite3VdbeAddOp2(v, OP_Integer, 1, dest); for(i=0; 1 /*Loop exits by "break"*/; i++){ int regFree1 = 0, regFree2 = 0; - Expr *pL, *pR; + Expr *pL = 0, *pR = 0; int r1, r2; assert( i>=0 && i0 ) sqlite3ExprCachePush(pParse); + if( addrCmp ) sqlite3VdbeJumpHere(v, addrCmp); r1 = exprVectorRegister(pParse, pLeft, i, regLeft, &pL, ®Free1); r2 = exprVectorRegister(pParse, pRight, i, regRight, &pR, ®Free2); - codeCompare(pParse, pL, pR, opx, r1, r2, dest, p5); + addrCmp = sqlite3VdbeCurrentAddr(v); + codeCompare(pParse, pL, pR, opx, r1, r2, addrDone, p5, isCommuted); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); @@ -95341,27 +108127,32 @@ static void codeVectorCompare( testcase(op==OP_Ne); VdbeCoverageIf(v,op==OP_Ne); sqlite3ReleaseTempReg(pParse, regFree1); sqlite3ReleaseTempReg(pParse, regFree2); - if( i>0 ) sqlite3ExprCachePop(pParse); + if( (opx==TK_LT || opx==TK_GT) && i0 @@ -95374,7 +108165,7 @@ SQLITE_PRIVATE int sqlite3ExprCheckHeight(Parse *pParse, int nHeight){ int rc = SQLITE_OK; int mxHeight = pParse->db->aLimit[SQLITE_LIMIT_EXPR_DEPTH]; if( nHeight>mxHeight ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "Expression tree is too large (maximum depth %d)", mxHeight ); rc = SQLITE_ERROR; @@ -95391,14 +108182,14 @@ SQLITE_PRIVATE int sqlite3ExprCheckHeight(Parse *pParse, int nHeight){ ** to by pnHeight, the second parameter, then set *pnHeight to that ** value. */ -static void heightOfExpr(Expr *p, int *pnHeight){ +static void heightOfExpr(const Expr *p, int *pnHeight){ if( p ){ if( p->nHeight>*pnHeight ){ *pnHeight = p->nHeight; } } } -static void heightOfExprList(ExprList *p, int *pnHeight){ +static void heightOfExprList(const ExprList *p, int *pnHeight){ if( p ){ int i; for(i=0; inExpr; i++){ @@ -95406,8 +108197,8 @@ static void heightOfExprList(ExprList *p, int *pnHeight){ } } } -static void heightOfSelect(Select *pSelect, int *pnHeight){ - Select *p; +static void heightOfSelect(const Select *pSelect, int *pnHeight){ + const Select *p; for(p=pSelect; p; p=p->pPrior){ heightOfExpr(p->pWhere, pnHeight); heightOfExpr(p->pHaving, pnHeight); @@ -95419,20 +108210,21 @@ static void heightOfSelect(Select *pSelect, int *pnHeight){ } /* -** Set the Expr.nHeight variable in the structure passed as an -** argument. An expression with no children, Expr.pList or +** Set the Expr.nHeight variable in the structure passed as an +** argument. An expression with no children, Expr.pList or ** Expr.pSelect member has a height of 1. Any other expression -** has a height equal to the maximum height of any other +** has a height equal to the maximum height of any other ** referenced Expr plus one. ** ** Also propagate EP_Propagate flags up from Expr.x.pList to Expr.flags, ** if appropriate. */ static void exprSetHeight(Expr *p){ - int nHeight = 0; - heightOfExpr(p->pLeft, &nHeight); - heightOfExpr(p->pRight, &nHeight); - if( ExprHasProperty(p, EP_xIsSelect) ){ + int nHeight = p->pLeft ? p->pLeft->nHeight : 0; + if( NEVER(p->pRight) && p->pRight->nHeight>nHeight ){ + nHeight = p->pRight->nHeight; + } + if( ExprUseXSelect(p) ){ heightOfSelect(p->x.pSelect, &nHeight); }else if( p->x.pList ){ heightOfExprList(p->x.pList, &nHeight); @@ -95447,7 +108239,7 @@ static void exprSetHeight(Expr *p){ ** leave an error in pParse. ** ** Also propagate all EP_Propagate flags from the Expr.x.pList into -** Expr.flags. +** Expr.flags. */ SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){ if( pParse->nErr ) return; @@ -95459,7 +108251,7 @@ SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){ ** Return the maximum height of any expression tree referenced ** by the select statement passed as an argument. */ -SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){ +SQLITE_PRIVATE int sqlite3SelectExprHeight(const Select *p){ int nHeight = 0; heightOfSelect(p, &nHeight); return nHeight; @@ -95467,16 +108259,26 @@ SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){ #else /* ABOVE: Height enforcement enabled. BELOW: Height enforcement off */ /* ** Propagate all EP_Propagate flags from the Expr.x.pList into -** Expr.flags. +** Expr.flags. */ SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){ - if( p && p->x.pList && !ExprHasProperty(p, EP_xIsSelect) ){ + if( pParse->nErr ) return; + if( p && ExprUseXList(p) && p->x.pList ){ p->flags |= EP_Propagate & sqlite3ExprListFlags(p->x.pList); } } #define exprSetHeight(y) #endif /* SQLITE_MAX_EXPR_DEPTH>0 */ +/* +** Set the error offset for an Expr node, if possible. +*/ +SQLITE_PRIVATE void sqlite3ExprSetErrorOffset(Expr *pExpr, int iOfst){ + if( pExpr==0 ) return; + if( NEVER(ExprUseWJoin(pExpr)) ) return; + pExpr->w.iOfst = iOfst; +} + /* ** This routine is the core allocator for Expr nodes. ** @@ -95522,7 +108324,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( pNew->iAgg = -1; if( pToken ){ if( nExtra==0 ){ - pNew->flags |= EP_IntValue|EP_Leaf; + pNew->flags |= EP_IntValue|EP_Leaf|(iValue?EP_IsTrue:EP_IsFalse); pNew->u.iValue = iValue; }else{ pNew->u.zToken = (char*)&pNew[1]; @@ -95530,14 +108332,13 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n); pNew->u.zToken[pToken->n] = 0; if( dequote && sqlite3Isquote(pNew->u.zToken[0]) ){ - if( pNew->u.zToken[0]=='"' ) pNew->flags |= EP_DblQuoted; - sqlite3Dequote(pNew->u.zToken); + sqlite3DequoteExpr(pNew); } } } #if SQLITE_MAX_EXPR_DEPTH>0 pNew->nHeight = 1; -#endif +#endif } return pNew; } @@ -95574,15 +108375,26 @@ SQLITE_PRIVATE void sqlite3ExprAttachSubtrees( sqlite3ExprDelete(db, pLeft); sqlite3ExprDelete(db, pRight); }else{ + assert( ExprUseXList(pRoot) ); + assert( pRoot->x.pSelect==0 ); if( pRight ){ pRoot->pRight = pRight; pRoot->flags |= EP_Propagate & pRight->flags; +#if SQLITE_MAX_EXPR_DEPTH>0 + pRoot->nHeight = pRight->nHeight+1; + }else{ + pRoot->nHeight = 1; +#endif } if( pLeft ){ pRoot->pLeft = pLeft; pRoot->flags |= EP_Propagate & pLeft->flags; +#if SQLITE_MAX_EXPR_DEPTH>0 + if( pLeft->nHeight>=pRoot->nHeight ){ + pRoot->nHeight = pLeft->nHeight+1; + } +#endif } - exprSetHeight(pRoot); } } @@ -95600,20 +108412,16 @@ SQLITE_PRIVATE Expr *sqlite3PExpr( Expr *pRight /* Right operand */ ){ Expr *p; - if( op==TK_AND && pParse->nErr==0 ){ - /* Take advantage of short-circuit false optimization for AND */ - p = sqlite3ExprAnd(pParse->db, pLeft, pRight); - }else{ - p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)); - if( p ){ - memset(p, 0, sizeof(Expr)); - p->op = op & TKFLG_MASK; - p->iAgg = -1; - } + p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)); + if( p ){ + memset(p, 0, sizeof(Expr)); + p->op = op & 0xff; + p->iAgg = -1; sqlite3ExprAttachSubtrees(pParse->db, p, pLeft, pRight); - } - if( p ) { sqlite3ExprCheckHeight(pParse, p->nHeight); + }else{ + sqlite3ExprDelete(pParse->db, pLeft); + sqlite3ExprDelete(pParse->db, pRight); } return p; } @@ -95633,55 +108441,89 @@ SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse *pParse, Expr *pExpr, Select *pS } } - /* -** If the expression is always either TRUE or FALSE (respectively), -** then return 1. If one cannot determine the truth value of the -** expression at compile-time return 0. +** Expression list pEList is a list of vector values. This function +** converts the contents of pEList to a VALUES(...) Select statement +** returning 1 row for each element of the list. For example, the +** expression list: ** -** This is an optimization. If is OK to return 0 here even if -** the expression really is always false or false (a false negative). -** But it is a bug to return 1 if the expression might have different -** boolean values in different circumstances (a false positive.) +** ( (1,2), (3,4) (5,6) ) ** -** Note that if the expression is part of conditional for a -** LEFT JOIN, then we cannot determine at compile-time whether or not -** is it true or false, so always return 0. +** is translated to the equivalent of: +** +** VALUES(1,2), (3,4), (5,6) +** +** Each of the vector values in pEList must contain exactly nElem terms. +** If a list element that is not a vector or does not contain nElem terms, +** an error message is left in pParse. +** +** This is used as part of processing IN(...) expressions with a list +** of vectors on the RHS. e.g. "... IN ((1,2), (3,4), (5,6))". */ -static int exprAlwaysTrue(Expr *p){ - int v = 0; - if( ExprHasProperty(p, EP_FromJoin) ) return 0; - if( !sqlite3ExprIsInteger(p, &v) ) return 0; - return v!=0; -} -static int exprAlwaysFalse(Expr *p){ - int v = 0; - if( ExprHasProperty(p, EP_FromJoin) ) return 0; - if( !sqlite3ExprIsInteger(p, &v) ) return 0; - return v==0; +SQLITE_PRIVATE Select *sqlite3ExprListToValues(Parse *pParse, int nElem, ExprList *pEList){ + int ii; + Select *pRet = 0; + assert( nElem>1 ); + for(ii=0; iinExpr; ii++){ + Select *pSel; + Expr *pExpr = pEList->a[ii].pExpr; + int nExprElem; + if( pExpr->op==TK_VECTOR ){ + assert( ExprUseXList(pExpr) ); + nExprElem = pExpr->x.pList->nExpr; + }else{ + nExprElem = 1; + } + if( nExprElem!=nElem ){ + sqlite3ErrorMsg(pParse, "IN(...) element has %d term%s - expected %d", + nExprElem, nExprElem>1?"s":"", nElem + ); + break; + } + assert( ExprUseXList(pExpr) ); + pSel = sqlite3SelectNew(pParse, pExpr->x.pList, 0, 0, 0, 0, 0, SF_Values,0); + pExpr->x.pList = 0; + if( pSel ){ + if( pRet ){ + pSel->op = TK_ALL; + pSel->pPrior = pRet; + } + pRet = pSel; + } + } + + if( pRet && pRet->pPrior ){ + pRet->selFlags |= SF_MultiValue; + } + sqlite3ExprListDelete(pParse->db, pEList); + return pRet; } /* ** Join two expressions using an AND operator. If either expression is ** NULL, then just return the other expression. ** -** If one side or the other of the AND is known to be false, then instead -** of returning an AND expression, just return a constant expression with -** a value of false. +** If one side or the other of the AND is known to be false, and neither side +** is part of an ON clause, then instead of returning an AND expression, +** just return a constant expression with a value of false. */ -SQLITE_PRIVATE Expr *sqlite3ExprAnd(sqlite3 *db, Expr *pLeft, Expr *pRight){ - if( pLeft==0 ){ +SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse *pParse, Expr *pLeft, Expr *pRight){ + sqlite3 *db = pParse->db; + if( pLeft==0 ){ return pRight; }else if( pRight==0 ){ return pLeft; - }else if( exprAlwaysFalse(pLeft) || exprAlwaysFalse(pRight) ){ - sqlite3ExprDelete(db, pLeft); - sqlite3ExprDelete(db, pRight); - return sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[0], 0); }else{ - Expr *pNew = sqlite3ExprAlloc(db, TK_AND, 0, 0); - sqlite3ExprAttachSubtrees(db, pNew, pLeft, pRight); - return pNew; + u32 f = pLeft->flags | pRight->flags; + if( (f&(EP_OuterON|EP_InnerON|EP_IsFalse))==EP_IsFalse + && !IN_RENAME_OBJECT + ){ + sqlite3ExprDeferredDelete(pParse, pLeft); + sqlite3ExprDeferredDelete(pParse, pRight); + return sqlite3Expr(db, TK_INTEGER, "0"); + }else{ + return sqlite3PExpr(pParse, TK_AND, pLeft, pRight); + } } } @@ -95689,7 +108531,12 @@ SQLITE_PRIVATE Expr *sqlite3ExprAnd(sqlite3 *db, Expr *pLeft, Expr *pRight){ ** Construct a new expression node for a function with multiple ** arguments. */ -SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token *pToken){ +SQLITE_PRIVATE Expr *sqlite3ExprFunction( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* Argument list */ + const Token *pToken, /* Name of the function */ + int eDistinct /* SF_Distinct or SF_ALL or 0 */ +){ Expr *pNew; sqlite3 *db = pParse->db; assert( pToken ); @@ -95698,16 +108545,59 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token * sqlite3ExprListDelete(db, pList); /* Avoid memory leak when malloc fails */ return 0; } + assert( !ExprHasProperty(pNew, EP_InnerON|EP_OuterON) ); + pNew->w.iOfst = (int)(pToken->z - pParse->zTail); + if( pList + && pList->nExpr > pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] + && !pParse->nested + ){ + sqlite3ErrorMsg(pParse, "too many arguments on function %T", pToken); + } pNew->x.pList = pList; ExprSetProperty(pNew, EP_HasFunc); - assert( !ExprHasProperty(pNew, EP_xIsSelect) ); + assert( ExprUseXList(pNew) ); sqlite3ExprSetHeightAndFlags(pParse, pNew); + if( eDistinct==SF_Distinct ) ExprSetProperty(pNew, EP_Distinct); return pNew; } +/* +** Check to see if a function is usable according to current access +** rules: +** +** SQLITE_FUNC_DIRECT - Only usable from top-level SQL +** +** SQLITE_FUNC_UNSAFE - Usable if TRUSTED_SCHEMA or from +** top-level SQL +** +** If the function is not usable, create an error. +*/ +SQLITE_PRIVATE void sqlite3ExprFunctionUsable( + Parse *pParse, /* Parsing and code generating context */ + const Expr *pExpr, /* The function invocation */ + const FuncDef *pDef /* The function being invoked */ +){ + assert( !IN_RENAME_OBJECT ); + assert( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0 ); + if( ExprHasProperty(pExpr, EP_FromDDL) ){ + if( (pDef->funcFlags & SQLITE_FUNC_DIRECT)!=0 + || (pParse->db->flags & SQLITE_TrustedSchema)==0 + ){ + /* Functions prohibited in triggers and views if: + ** (1) tagged with SQLITE_DIRECTONLY + ** (2) not tagged with SQLITE_INNOCUOUS (which means it + ** is tagged with SQLITE_FUNC_UNSAFE) and + ** SQLITE_DBCONFIG_TRUSTED_SCHEMA is off (meaning + ** that the schema is possibly tainted). + */ + sqlite3ErrorMsg(pParse, "unsafe use of %#T()", pExpr); + } + } +} + /* ** Assign a variable number to an expression that encodes a wildcard -** in the original SQL statement. +** in the original SQL statement. ** ** Wildcards consisting of a single "?" are assigned the next sequential ** variable number. @@ -95756,6 +108646,7 @@ SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr, u32 n if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d", db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]); + sqlite3RecordErrorOffsetOfExpr(pParse->db, pExpr); return; } x = (ynVar)i; @@ -95783,6 +108674,7 @@ SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr, u32 n pExpr->iColumn = x; if( x>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ sqlite3ErrorMsg(pParse, "too many SQL variables"); + sqlite3RecordErrorOffsetOfExpr(pParse->db, pExpr); } } @@ -95791,30 +108683,40 @@ SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr, u32 n */ static SQLITE_NOINLINE void sqlite3ExprDeleteNN(sqlite3 *db, Expr *p){ assert( p!=0 ); - /* Sanity check: Assert that the IntValue is non-negative if it exists */ - assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 ); + assert( db!=0 ); + assert( !ExprUseUValue(p) || p->u.iValue>=0 ); + assert( !ExprUseYWin(p) || !ExprUseYSub(p) ); + assert( !ExprUseYWin(p) || p->y.pWin!=0 || db->mallocFailed ); + assert( p->op!=TK_FUNCTION || !ExprUseYSub(p) ); #ifdef SQLITE_DEBUG if( ExprHasProperty(p, EP_Leaf) && !ExprHasProperty(p, EP_TokenOnly) ){ assert( p->pLeft==0 ); assert( p->pRight==0 ); - assert( p->x.pSelect==0 ); + assert( !ExprUseXSelect(p) || p->x.pSelect==0 ); + assert( !ExprUseXList(p) || p->x.pList==0 ); } #endif if( !ExprHasProperty(p, (EP_TokenOnly|EP_Leaf)) ){ /* The Expr.x union is never used at the same time as Expr.pRight */ - assert( p->x.pList==0 || p->pRight==0 ); + assert( (ExprUseXList(p) && p->x.pList==0) || p->pRight==0 ); if( p->pLeft && p->op!=TK_SELECT_COLUMN ) sqlite3ExprDeleteNN(db, p->pLeft); if( p->pRight ){ + assert( !ExprHasProperty(p, EP_WinFunc) ); sqlite3ExprDeleteNN(db, p->pRight); - }else if( ExprHasProperty(p, EP_xIsSelect) ){ + }else if( ExprUseXSelect(p) ){ + assert( !ExprHasProperty(p, EP_WinFunc) ); sqlite3SelectDelete(db, p->x.pSelect); }else{ sqlite3ExprListDelete(db, p->x.pList); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(p, EP_WinFunc) ){ + sqlite3WindowDelete(db, p->y.pWin); + } +#endif } } - if( ExprHasProperty(p, EP_MemToken) ) sqlite3DbFree(db, p->u.zToken); if( !ExprHasProperty(p, EP_Static) ){ - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } } SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){ @@ -95822,11 +108724,52 @@ SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){ } /* -** Return the number of bytes allocated for the expression structure +** Clear both elements of an OnOrUsing object +*/ +SQLITE_PRIVATE void sqlite3ClearOnOrUsing(sqlite3 *db, OnOrUsing *p){ + if( p==0 ){ + /* Nothing to clear */ + }else if( p->pOn ){ + sqlite3ExprDeleteNN(db, p->pOn); + }else if( p->pUsing ){ + sqlite3IdListDelete(db, p->pUsing); + } +} + +/* +** Arrange to cause pExpr to be deleted when the pParse is deleted. +** This is similar to sqlite3ExprDelete() except that the delete is +** deferred until the pParse is deleted. +** +** The pExpr might be deleted immediately on an OOM error. +** +** The deferred delete is (currently) implemented by adding the +** pExpr to the pParse->pConstExpr list with a register number of 0. +*/ +SQLITE_PRIVATE void sqlite3ExprDeferredDelete(Parse *pParse, Expr *pExpr){ + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3ExprDelete, + pExpr); +} + +/* Invoke sqlite3RenameExprUnmap() and sqlite3ExprDelete() on the +** expression. +*/ +SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse *pParse, Expr *p){ + if( p ){ + if( IN_RENAME_OBJECT ){ + sqlite3RenameExprUnmap(pParse, p); + } + sqlite3ExprDeleteNN(pParse->db, p); + } +} + +/* +** Return the number of bytes allocated for the expression structure ** passed as the first argument. This is always one of EXPR_FULLSIZE, ** EXPR_REDUCEDSIZE or EXPR_TOKENONLYSIZE. */ -static int exprStructSize(Expr *p){ +static int exprStructSize(const Expr *p){ if( ExprHasProperty(p, EP_TokenOnly) ) return EXPR_TOKENONLYSIZE; if( ExprHasProperty(p, EP_Reduced) ) return EXPR_REDUCEDSIZE; return EXPR_FULLSIZE; @@ -95837,14 +108780,14 @@ static int exprStructSize(Expr *p){ ** to store a copy of an expression or expression tree. They differ in ** how much of the tree is measured. ** -** dupedExprStructSize() Size of only the Expr structure +** dupedExprStructSize() Size of only the Expr structure ** dupedExprNodeSize() Size of Expr + space for token ** dupedExprSize() Expr + token + subtree components ** *************************************************************************** ** -** The dupedExprStructSize() function returns two values OR-ed together: -** (1) the space required for a copy of the Expr structure only and +** The dupedExprStructSize() function returns two values OR-ed together: +** (1) the space required for a copy of the Expr structure only and ** (2) the EP_xxx flags that indicate what the structure size should be. ** The return values is always one of: ** @@ -95859,25 +108802,28 @@ static int exprStructSize(Expr *p){ ** Note that with flags==EXPRDUP_REDUCE, this routines works on full-size ** (unreduced) Expr objects as they or originally constructed by the parser. ** During expression analysis, extra information is computed and moved into -** later parts of teh Expr object and that extra information might get chopped +** later parts of the Expr object and that extra information might get chopped ** off if the expression is reduced. Note also that it does not work to ** make an EXPRDUP_REDUCE copy of a reduced expression. It is only legal ** to reduce a pristine expression tree from the parser. The implementation ** of dupedExprStructSize() contain multiple assert() statements that attempt ** to enforce this constraint. */ -static int dupedExprStructSize(Expr *p, int flags){ +static int dupedExprStructSize(const Expr *p, int flags){ int nSize; assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */ assert( EXPR_FULLSIZE<=0xfff ); assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 ); - if( 0==flags || p->op==TK_SELECT_COLUMN ){ + if( 0==flags || p->op==TK_SELECT_COLUMN +#ifndef SQLITE_OMIT_WINDOWFUNC + || ExprHasProperty(p, EP_WinFunc) +#endif + ){ nSize = EXPR_FULLSIZE; }else{ assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) ); - assert( !ExprHasProperty(p, EP_FromJoin) ); - assert( !ExprHasProperty(p, EP_MemToken) ); - assert( !ExprHasProperty(p, EP_NoReduce) ); + assert( !ExprHasProperty(p, EP_OuterON) ); + assert( !ExprHasVVAProperty(p, EP_NoReduce) ); if( p->pLeft || p->x.pList ){ nSize = EXPR_REDUCEDSIZE | EP_Reduced; }else{ @@ -95889,32 +108835,32 @@ static int dupedExprStructSize(Expr *p, int flags){ } /* -** This function returns the space in bytes required to store the copy +** This function returns the space in bytes required to store the copy ** of the Expr structure and a copy of the Expr.u.zToken string (if that ** string is defined.) */ -static int dupedExprNodeSize(Expr *p, int flags){ +static int dupedExprNodeSize(const Expr *p, int flags){ int nByte = dupedExprStructSize(p, flags) & 0xfff; if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ - nByte += sqlite3Strlen30(p->u.zToken)+1; + nByte += sqlite3Strlen30NN(p->u.zToken)+1; } return ROUND8(nByte); } /* -** Return the number of bytes required to create a duplicate of the +** Return the number of bytes required to create a duplicate of the ** expression passed as the first argument. The second argument is a ** mask containing EXPRDUP_XXX flags. ** ** The value returned includes space to create a copy of the Expr struct ** itself and the buffer referred to by Expr.u.zToken, if any. ** -** If the EXPRDUP_REDUCE flag is set, then the return value includes -** space to duplicate all Expr nodes in the tree formed by Expr.pLeft -** and Expr.pRight variables (but not for any structures pointed to or +** If the EXPRDUP_REDUCE flag is set, then the return value includes +** space to duplicate all Expr nodes in the tree formed by Expr.pLeft +** and Expr.pRight variables (but not for any structures pointed to or ** descended from the Expr.x.pList or Expr.x.pSelect variables). */ -static int dupedExprSize(Expr *p, int flags){ +static int dupedExprSize(const Expr *p, int flags){ int nByte = 0; if( p ){ nByte = dupedExprNodeSize(p, flags); @@ -95926,14 +108872,14 @@ static int dupedExprSize(Expr *p, int flags){ } /* -** This function is similar to sqlite3ExprDup(), except that if pzBuffer -** is not NULL then *pzBuffer is assumed to point to a buffer large enough +** This function is similar to sqlite3ExprDup(), except that if pzBuffer +** is not NULL then *pzBuffer is assumed to point to a buffer large enough ** to store the copy of expression p, the copies of p->u.zToken ** (if applicable), and the copies of the p->pLeft and p->pRight expressions, ** if any. Before returning, *pzBuffer is set to the first byte past the ** portion of the buffer copied into by this function. */ -static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ +static Expr *exprDup(sqlite3 *db, const Expr *p, int dupFlags, u8 **pzBuffer){ Expr *pNew; /* Value to return */ u8 *zAlloc; /* Memory space from which to build Expr object */ u32 staticFlag; /* EP_Static if space not obtained from malloc */ @@ -95947,6 +108893,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ if( pzBuffer ){ zAlloc = *pzBuffer; staticFlag = EP_Static; + assert( zAlloc!=0 ); }else{ zAlloc = sqlite3DbMallocRawNN(db, dupedExprSize(p, dupFlags)); staticFlag = 0; @@ -95973,15 +108920,19 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ }else{ u32 nSize = (u32)exprStructSize(p); memcpy(zAlloc, p, nSize); - if( nSizeflags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken); + pNew->flags &= ~(EP_Reduced|EP_TokenOnly|EP_Static); pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly); pNew->flags |= staticFlag; + ExprClearVVAProperties(pNew); + if( dupFlags ){ + ExprSetVVAProperty(pNew, EP_Immutable); + } /* Copy the p->u.zToken string, if any. */ if( nToken ){ @@ -95991,7 +108942,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ if( 0==((p->flags|pNew->flags) & (EP_TokenOnly|EP_Leaf)) ){ /* Fill in the pNew->x.pSelect or pNew->x.pList member. */ - if( ExprHasProperty(p, EP_xIsSelect) ){ + if( ExprUseXSelect(p) ){ pNew->x.pSelect = sqlite3SelectDup(db, p->x.pSelect, dupFlags); }else{ pNew->x.pList = sqlite3ExprListDup(db, p->x.pList, dupFlags); @@ -95999,7 +108950,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ } /* Fill in pNew->pLeft and pNew->pRight. */ - if( ExprHasProperty(pNew, EP_Reduced|EP_TokenOnly) ){ + if( ExprHasProperty(pNew, EP_Reduced|EP_TokenOnly|EP_WinFunc) ){ zAlloc += dupedExprNodeSize(p, dupFlags); if( !ExprHasProperty(pNew, EP_TokenOnly|EP_Leaf) ){ pNew->pLeft = p->pLeft ? @@ -96007,6 +108958,12 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ pNew->pRight = p->pRight ? exprDup(db, p->pRight, EXPRDUP_REDUCE, &zAlloc) : 0; } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(p, EP_WinFunc) ){ + pNew->y.pWin = sqlite3WindowDup(db, pNew, p->y.pWin); + assert( ExprHasProperty(pNew, EP_WinFunc) ); + } +#endif /* SQLITE_OMIT_WINDOWFUNC */ if( pzBuffer ){ *pzBuffer = zAlloc; } @@ -96014,8 +108971,8 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){ if( pNew->op==TK_SELECT_COLUMN ){ pNew->pLeft = p->pLeft; - assert( p->iColumn==0 || p->pRight==0 ); - assert( p->pRight==0 || p->pRight==p->pLeft ); + assert( p->pRight==0 || p->pRight==p->pLeft + || ExprHasProperty(p->pLeft, EP_Subquery) ); }else{ pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); } @@ -96027,15 +108984,15 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ } /* -** Create and return a deep copy of the object passed as the second +** Create and return a deep copy of the object passed as the second ** argument. If an OOM condition is encountered, NULL is returned ** and the db->mallocFailed flag set. */ #ifndef SQLITE_OMIT_CTE -static With *withDup(sqlite3 *db, With *p){ +SQLITE_PRIVATE With *sqlite3WithDup(sqlite3 *db, With *p){ With *pRet = 0; if( p ){ - int nByte = sizeof(*p) + sizeof(p->a[0]) * (p->nCte-1); + sqlite3_int64 nByte = sizeof(*p) + sizeof(p->a[0]) * (p->nCte-1); pRet = sqlite3DbMallocZero(db, nByte); if( pRet ){ int i; @@ -96044,15 +109001,49 @@ static With *withDup(sqlite3 *db, With *p){ pRet->a[i].pSelect = sqlite3SelectDup(db, p->a[i].pSelect, 0); pRet->a[i].pCols = sqlite3ExprListDup(db, p->a[i].pCols, 0); pRet->a[i].zName = sqlite3DbStrDup(db, p->a[i].zName); + pRet->a[i].eM10d = p->a[i].eM10d; } } } return pRet; } #else -# define withDup(x,y) 0 +# define sqlite3WithDup(x,y) 0 #endif +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** The gatherSelectWindows() procedure and its helper routine +** gatherSelectWindowsCallback() are used to scan all the expressions +** an a newly duplicated SELECT statement and gather all of the Window +** objects found there, assembling them onto the linked list at Select->pWin. +*/ +static int gatherSelectWindowsCallback(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_FUNCTION && ExprHasProperty(pExpr, EP_WinFunc) ){ + Select *pSelect = pWalker->u.pSelect; + Window *pWin = pExpr->y.pWin; + assert( pWin ); + assert( IsWindowFunc(pExpr) ); + assert( pWin->ppThis==0 ); + sqlite3WindowLink(pSelect, pWin); + } + return WRC_Continue; +} +static int gatherSelectWindowsSelectCallback(Walker *pWalker, Select *p){ + return p==pWalker->u.pSelect ? WRC_Continue : WRC_Prune; +} +static void gatherSelectWindows(Select *p){ + Walker w; + w.xExprCallback = gatherSelectWindowsCallback; + w.xSelectCallback = gatherSelectWindowsSelectCallback; + w.xSelectCallback2 = 0; + w.pParse = 0; + w.u.pSelect = p; + sqlite3WalkSelect(&w, p); +} +#endif + + /* ** The following group of routines make deep copies of expressions, ** expression lists, ID lists, and select statements. The copies can @@ -96060,7 +109051,7 @@ static With *withDup(sqlite3 *db, With *p){ ** without effecting the originals. ** ** The expression list, ID, and source lists return by sqlite3ExprListDup(), -** sqlite3IdListDup(), and sqlite3SrcListDup() can not be further expanded +** sqlite3IdListDup(), and sqlite3SrcListDup() can not be further expanded ** by subsequent calls to sqlite*ListAppend() routines. ** ** Any tables that the SrcList might point to are not duplicated. @@ -96070,48 +109061,49 @@ static With *withDup(sqlite3 *db, With *p){ ** truncated version of the usual Expr structure that will be stored as ** part of the in-memory representation of the database schema. */ -SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3 *db, Expr *p, int flags){ +SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3 *db, const Expr *p, int flags){ assert( flags==0 || flags==EXPRDUP_REDUCE ); return p ? exprDup(db, p, flags, 0) : 0; } -SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){ +SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, const ExprList *p, int flags){ ExprList *pNew; - struct ExprList_item *pItem, *pOldItem; + struct ExprList_item *pItem; + const struct ExprList_item *pOldItem; int i; - Expr *pPriorSelectCol = 0; + Expr *pPriorSelectColOld = 0; + Expr *pPriorSelectColNew = 0; assert( db!=0 ); if( p==0 ) return 0; pNew = sqlite3DbMallocRawNN(db, sqlite3DbMallocSize(db, p)); if( pNew==0 ) return 0; pNew->nExpr = p->nExpr; + pNew->nAlloc = p->nAlloc; pItem = pNew->a; pOldItem = p->a; for(i=0; inExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; Expr *pNewExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); - if( pOldExpr + if( pOldExpr && pOldExpr->op==TK_SELECT_COLUMN - && (pNewExpr = pItem->pExpr)!=0 + && (pNewExpr = pItem->pExpr)!=0 ){ - assert( pNewExpr->iColumn==0 || i>0 ); - if( pNewExpr->iColumn==0 ){ - assert( pOldExpr->pLeft==pOldExpr->pRight ); - pPriorSelectCol = pNewExpr->pLeft = pNewExpr->pRight; + if( pNewExpr->pRight ){ + pPriorSelectColOld = pOldExpr->pRight; + pPriorSelectColNew = pNewExpr->pRight; + pNewExpr->pLeft = pNewExpr->pRight; }else{ - assert( i>0 ); - assert( pItem[-1].pExpr!=0 ); - assert( pNewExpr->iColumn==pItem[-1].pExpr->iColumn+1 ); - assert( pPriorSelectCol==pItem[-1].pExpr->pLeft ); - pNewExpr->pLeft = pPriorSelectCol; + if( pOldExpr->pLeft!=pPriorSelectColOld ){ + pPriorSelectColOld = pOldExpr->pLeft; + pPriorSelectColNew = sqlite3ExprDup(db, pPriorSelectColOld, flags); + pNewExpr->pRight = pPriorSelectColNew; + } + pNewExpr->pLeft = pPriorSelectColNew; } } - pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); - pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); - pItem->sortOrder = pOldItem->sortOrder; - pItem->done = 0; - pItem->bSpanIsTab = pOldItem->bSpanIsTab; - pItem->bSorterRef = pOldItem->bSorterRef; + pItem->zEName = sqlite3DbStrDup(db, pOldItem->zEName); + pItem->fg = pOldItem->fg; + pItem->fg.done = 0; pItem->u = pOldItem->u; } return pNew; @@ -96119,13 +109111,13 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags) /* ** If cursors, triggers, views and subqueries are all omitted from -** the build, then none of the following routines, except for +** the build, then none of the following routines, except for ** sqlite3SelectDup(), can be called. sqlite3SelectDup() is sometimes ** called with a NULL argument. */ #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) \ || !defined(SQLITE_OMIT_SUBQUERY) -SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ +SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, const SrcList *p, int flags){ SrcList *pNew; int i; int nByte; @@ -96136,8 +109128,8 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ if( pNew==0 ) return 0; pNew->nSrc = pNew->nAlloc = p->nSrc; for(i=0; inSrc; i++){ - struct SrcList_item *pNewItem = &pNew->a[i]; - struct SrcList_item *pOldItem = &p->a[i]; + SrcItem *pNewItem = &pNew->a[i]; + const SrcItem *pOldItem = &p->a[i]; Table *pTab; pNewItem->pSchema = pOldItem->pSchema; pNewItem->zDatabase = sqlite3DbStrDup(db, pOldItem->zDatabase); @@ -96150,9 +109142,12 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ if( pNewItem->fg.isIndexedBy ){ pNewItem->u1.zIndexedBy = sqlite3DbStrDup(db, pOldItem->u1.zIndexedBy); } - pNewItem->pIBIndex = pOldItem->pIBIndex; + pNewItem->u2 = pOldItem->u2; + if( pNewItem->fg.isCte ){ + pNewItem->u2.pCteUse->nUse++; + } if( pNewItem->fg.isTabFunc ){ - pNewItem->u1.pFuncArg = + pNewItem->u1.pFuncArg = sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags); } pTab = pNewItem->pTab = pOldItem->pTab; @@ -96160,41 +109155,39 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ pTab->nTabRef++; } pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags); - pNewItem->pOn = sqlite3ExprDup(db, pOldItem->pOn, flags); - pNewItem->pUsing = sqlite3IdListDup(db, pOldItem->pUsing); + if( pOldItem->fg.isUsing ){ + assert( pNewItem->fg.isUsing ); + pNewItem->u3.pUsing = sqlite3IdListDup(db, pOldItem->u3.pUsing); + }else{ + pNewItem->u3.pOn = sqlite3ExprDup(db, pOldItem->u3.pOn, flags); + } pNewItem->colUsed = pOldItem->colUsed; } return pNew; } -SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3 *db, IdList *p){ +SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3 *db, const IdList *p){ IdList *pNew; int i; assert( db!=0 ); if( p==0 ) return 0; - pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew) ); + assert( p->eU4!=EU4_EXPR ); + pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew)+(p->nId-1)*sizeof(p->a[0]) ); if( pNew==0 ) return 0; pNew->nId = p->nId; - pNew->a = sqlite3DbMallocRawNN(db, p->nId*sizeof(p->a[0]) ); - if( pNew->a==0 ){ - sqlite3DbFreeNN(db, pNew); - return 0; - } - /* Note that because the size of the allocation for p->a[] is not - ** necessarily a power of two, sqlite3IdListAppend() may not be called - ** on the duplicate created by this function. */ + pNew->eU4 = p->eU4; for(i=0; inId; i++){ struct IdList_item *pNewItem = &pNew->a[i]; - struct IdList_item *pOldItem = &p->a[i]; + const struct IdList_item *pOldItem = &p->a[i]; pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); - pNewItem->idx = pOldItem->idx; + pNewItem->u4 = pOldItem->u4; } return pNew; } -SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *pDup, int flags){ +SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, const Select *pDup, int flags){ Select *pRet = 0; Select *pNext = 0; Select **pp = &pRet; - Select *p; + const Select *p; assert( db!=0 ); for(p=pDup; p; p=p->pPrior){ @@ -96216,8 +109209,21 @@ SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *pDup, int flags){ pNew->addrOpenEphm[0] = -1; pNew->addrOpenEphm[1] = -1; pNew->nSelectRow = p->nSelectRow; - pNew->pWith = withDup(db, p->pWith); - sqlite3SelectSetName(pNew, p->zSelName); + pNew->pWith = sqlite3WithDup(db, p->pWith); +#ifndef SQLITE_OMIT_WINDOWFUNC + pNew->pWin = 0; + pNew->pWinDefn = sqlite3WindowListDup(db, p->pWinDefn); + if( p->pWin && db->mallocFailed==0 ) gatherSelectWindows(pNew); +#endif + pNew->selId = p->selId; + if( db->mallocFailed ){ + /* Any prior OOM might have left the Select object incomplete. + ** Delete the whole thing rather than allow an incomplete Select + ** to be used by the code generator. */ + pNew->pNext = 0; + sqlite3SelectDelete(db, pNew); + break; + } *pp = pNew; pp = &pNew->pPrior; pNext = pNew; @@ -96226,7 +109232,7 @@ SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *pDup, int flags){ return pRet; } #else -SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ +SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, const Select *p, int flags){ assert( p==0 ); return 0; } @@ -96248,41 +109254,64 @@ SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ ** NULL is returned. If non-NULL is returned, then it is guaranteed ** that the new entry was successfully appended. */ +static const struct ExprList_item zeroItem = {0}; +SQLITE_PRIVATE SQLITE_NOINLINE ExprList *sqlite3ExprListAppendNew( + sqlite3 *db, /* Database handle. Used for memory allocation */ + Expr *pExpr /* Expression to be appended. Might be NULL */ +){ + struct ExprList_item *pItem; + ExprList *pList; + + pList = sqlite3DbMallocRawNN(db, sizeof(ExprList)+sizeof(pList->a[0])*4 ); + if( pList==0 ){ + sqlite3ExprDelete(db, pExpr); + return 0; + } + pList->nAlloc = 4; + pList->nExpr = 1; + pItem = &pList->a[0]; + *pItem = zeroItem; + pItem->pExpr = pExpr; + return pList; +} +SQLITE_PRIVATE SQLITE_NOINLINE ExprList *sqlite3ExprListAppendGrow( + sqlite3 *db, /* Database handle. Used for memory allocation */ + ExprList *pList, /* List to which to append. Might be NULL */ + Expr *pExpr /* Expression to be appended. Might be NULL */ +){ + struct ExprList_item *pItem; + ExprList *pNew; + pList->nAlloc *= 2; + pNew = sqlite3DbRealloc(db, pList, + sizeof(*pList)+(pList->nAlloc-1)*sizeof(pList->a[0])); + if( pNew==0 ){ + sqlite3ExprListDelete(db, pList); + sqlite3ExprDelete(db, pExpr); + return 0; + }else{ + pList = pNew; + } + pItem = &pList->a[pList->nExpr++]; + *pItem = zeroItem; + pItem->pExpr = pExpr; + return pList; +} SQLITE_PRIVATE ExprList *sqlite3ExprListAppend( Parse *pParse, /* Parsing context */ ExprList *pList, /* List to which to append. Might be NULL */ Expr *pExpr /* Expression to be appended. Might be NULL */ ){ struct ExprList_item *pItem; - sqlite3 *db = pParse->db; - assert( db!=0 ); if( pList==0 ){ - pList = sqlite3DbMallocRawNN(db, sizeof(ExprList) ); - if( pList==0 ){ - goto no_mem; - } - pList->nExpr = 0; - }else if( (pList->nExpr & (pList->nExpr-1))==0 ){ - ExprList *pNew; - pNew = sqlite3DbRealloc(db, pList, - sizeof(*pList)+(2*pList->nExpr - 1)*sizeof(pList->a[0])); - if( pNew==0 ){ - goto no_mem; - } - pList = pNew; + return sqlite3ExprListAppendNew(pParse->db,pExpr); + } + if( pList->nAllocnExpr+1 ){ + return sqlite3ExprListAppendGrow(pParse->db,pList,pExpr); } pItem = &pList->a[pList->nExpr++]; - assert( offsetof(struct ExprList_item,zName)==sizeof(pItem->pExpr) ); - assert( offsetof(struct ExprList_item,pExpr)==0 ); - memset(&pItem->zName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zName)); + *pItem = zeroItem; pItem->pExpr = pExpr; return pList; - -no_mem: - /* Avoid leaking memory if malloc has failed. */ - sqlite3ExprDelete(db, pExpr); - sqlite3ExprListDelete(db, pList); - return 0; } /* @@ -96311,8 +109340,8 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector( if( NEVER(pColumns==0) ) goto vector_append_error; if( pExpr==0 ) goto vector_append_error; - /* If the RHS is a vector, then we can immediately check to see that - ** the size of the RHS and LHS match. But if the RHS is a SELECT, + /* If the RHS is a vector, then we can immediately check to see that + ** the size of the RHS and LHS match. But if the RHS is a SELECT, ** wildcards ("*") in the result set of the SELECT must be expanded before ** we can do the size check, so defer the size check until code generation. */ @@ -96323,11 +109352,13 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector( } for(i=0; inId; i++){ - Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i); + Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i, pColumns->nId); + assert( pSubExpr!=0 || db->mallocFailed ); + if( pSubExpr==0 ) continue; pList = sqlite3ExprListAppend(pParse, pList, pSubExpr); if( pList ){ assert( pList->nExpr==iFirst+i+1 ); - pList->a[pList->nExpr-1].zName = pColumns->a[i].zName; + pList->a[pList->nExpr-1].zEName = pColumns->a[i].zName; pColumns->a[i].zName = 0; } } @@ -96336,7 +109367,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector( Expr *pFirst = pList->a[iFirst].pExpr; assert( pFirst!=0 ); assert( pFirst->op==TK_SELECT_COLUMN ); - + /* Store the SELECT statement in pRight so it will be deleted when ** sqlite3ExprListDelete() is called */ pFirst->pRight = pExpr; @@ -96348,7 +109379,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector( } vector_append_error: - sqlite3ExprDelete(db, pExpr); + sqlite3ExprUnmapAndDelete(pParse, pExpr); sqlite3IdListDelete(db, pColumns); return pList; } @@ -96356,19 +109387,38 @@ vector_append_error: /* ** Set the sort order for the last element on the given ExprList. */ -SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder){ +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder, int eNulls){ + struct ExprList_item *pItem; if( p==0 ) return; - assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC>=0 && SQLITE_SO_DESC>0 ); assert( p->nExpr>0 ); - if( iSortOrder<0 ){ - assert( p->a[p->nExpr-1].sortOrder==SQLITE_SO_ASC ); - return; + + assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC==0 && SQLITE_SO_DESC>0 ); + assert( iSortOrder==SQLITE_SO_UNDEFINED + || iSortOrder==SQLITE_SO_ASC + || iSortOrder==SQLITE_SO_DESC + ); + assert( eNulls==SQLITE_SO_UNDEFINED + || eNulls==SQLITE_SO_ASC + || eNulls==SQLITE_SO_DESC + ); + + pItem = &p->a[p->nExpr-1]; + assert( pItem->fg.bNulls==0 ); + if( iSortOrder==SQLITE_SO_UNDEFINED ){ + iSortOrder = SQLITE_SO_ASC; + } + pItem->fg.sortFlags = (u8)iSortOrder; + + if( eNulls!=SQLITE_SO_UNDEFINED ){ + pItem->fg.bNulls = 1; + if( iSortOrder!=eNulls ){ + pItem->fg.sortFlags |= KEYINFO_ORDER_BIGNULL; + } } - p->a[p->nExpr-1].sortOrder = (u8)iSortOrder; } /* -** Set the ExprList.a[].zName element of the most recently added item +** Set the ExprList.a[].zEName element of the most recently added item ** on the expression list. ** ** pList might be NULL following an OOM error. But pName should never be @@ -96378,17 +109428,27 @@ SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder){ SQLITE_PRIVATE void sqlite3ExprListSetName( Parse *pParse, /* Parsing context */ ExprList *pList, /* List to which to add the span. */ - Token *pName, /* Name to be added */ + const Token *pName, /* Name to be added */ int dequote /* True to cause the name to be dequoted */ ){ assert( pList!=0 || pParse->db->mallocFailed!=0 ); + assert( pParse->eParseMode!=PARSE_MODE_UNMAP || dequote==0 ); if( pList ){ struct ExprList_item *pItem; assert( pList->nExpr>0 ); pItem = &pList->a[pList->nExpr-1]; - assert( pItem->zName==0 ); - pItem->zName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n); - if( dequote ) sqlite3Dequote(pItem->zName); + assert( pItem->zEName==0 ); + assert( pItem->fg.eEName==ENAME_NAME ); + pItem->zEName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n); + if( dequote ){ + /* If dequote==0, then pName->z does not point to part of a DDL + ** statement handled by the parser. And so no token need be added + ** to the token-map. */ + sqlite3Dequote(pItem->zEName); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenMap(pParse, (const void*)pItem->zEName, pName); + } + } } } @@ -96411,8 +109471,10 @@ SQLITE_PRIVATE void sqlite3ExprListSetSpan( if( pList ){ struct ExprList_item *pItem = &pList->a[pList->nExpr-1]; assert( pList->nExpr>0 ); - sqlite3DbFree(db, pItem->zSpan); - pItem->zSpan = sqlite3DbSpanDup(db, zStart, zEnd); + if( pItem->zEName==0 ){ + pItem->zEName = sqlite3DbSpanDup(db, zStart, zEnd); + pItem->fg.eEName = ENAME_SPAN; + } } } @@ -96440,13 +109502,13 @@ static SQLITE_NOINLINE void exprListDeleteNN(sqlite3 *db, ExprList *pList){ int i = pList->nExpr; struct ExprList_item *pItem = pList->a; assert( pList->nExpr>0 ); + assert( db!=0 ); do{ sqlite3ExprDelete(db, pItem->pExpr); - sqlite3DbFree(db, pItem->zName); - sqlite3DbFree(db, pItem->zSpan); + if( pItem->zEName ) sqlite3DbNNFreeNN(db, pItem->zEName); pItem++; }while( --i>0 ); - sqlite3DbFreeNN(db, pList); + sqlite3DbNNFreeNN(db, pList); } SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){ if( pList ) exprListDeleteNN(db, pList); @@ -96481,17 +109543,34 @@ SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){ return WRC_Abort; } +/* +** Check the input string to see if it is "true" or "false" (in any case). +** +** If the string is.... Return +** "true" EP_IsTrue +** "false" EP_IsFalse +** anything else 0 +*/ +SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char *zIn){ + if( sqlite3StrICmp(zIn, "true")==0 ) return EP_IsTrue; + if( sqlite3StrICmp(zIn, "false")==0 ) return EP_IsFalse; + return 0; +} + + /* ** If the input expression is an ID with the name "true" or "false" ** then convert it into an TK_TRUEFALSE term. Return non-zero if ** the conversion happened, and zero if the expression is unaltered. */ SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr *pExpr){ + u32 v; assert( pExpr->op==TK_ID || pExpr->op==TK_STRING ); - if( sqlite3StrICmp(pExpr->u.zToken, "true")==0 - || sqlite3StrICmp(pExpr->u.zToken, "false")==0 + if( !ExprHasProperty(pExpr, EP_Quoted|EP_IntValue) + && (v = sqlite3IsTrueOrFalse(pExpr->u.zToken))!=0 ){ pExpr->op = TK_TRUEFALSE; + ExprSetProperty(pExpr, v); return 1; } return 0; @@ -96502,12 +109581,41 @@ SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr *pExpr){ ** and 0 if it is FALSE. */ SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr *pExpr){ + pExpr = sqlite3ExprSkipCollateAndLikely((Expr*)pExpr); assert( pExpr->op==TK_TRUEFALSE ); + assert( !ExprHasProperty(pExpr, EP_IntValue) ); assert( sqlite3StrICmp(pExpr->u.zToken,"true")==0 || sqlite3StrICmp(pExpr->u.zToken,"false")==0 ); return pExpr->u.zToken[4]==0; } +/* +** If pExpr is an AND or OR expression, try to simplify it by eliminating +** terms that are always true or false. Return the simplified expression. +** Or return the original expression if no simplification is possible. +** +** Examples: +** +** (x<10) AND true => (x<10) +** (x<10) AND false => false +** (x<10) AND (y=22 OR false) => (x<10) AND (y=22) +** (x<10) AND (y=22 OR true) => (x<10) +** (y=22) OR true => true +*/ +SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr *pExpr){ + assert( pExpr!=0 ); + if( pExpr->op==TK_AND || pExpr->op==TK_OR ){ + Expr *pRight = sqlite3ExprSimplifiedAndOr(pExpr->pRight); + Expr *pLeft = sqlite3ExprSimplifiedAndOr(pExpr->pLeft); + if( ExprAlwaysTrue(pLeft) || ExprAlwaysFalse(pRight) ){ + pExpr = pExpr->op==TK_AND ? pRight : pLeft; + }else if( ExprAlwaysTrue(pRight) || ExprAlwaysFalse(pLeft) ){ + pExpr = pExpr->op==TK_AND ? pLeft : pRight; + } + } + return pExpr; +} + /* ** These routines are Walker callbacks used to check expressions to @@ -96525,11 +109633,12 @@ SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr *pExpr){ ** In all cases, the callbacks set Walker.eCode=0 and abort if the expression ** is found to not be a constant. ** -** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions -** in a CREATE TABLE statement. The Walker.eCode value is 5 when parsing -** an existing schema and 4 when processing a new statement. A bound -** parameter raises an error for new statements, but is silently converted -** to NULL for existing schemas. This allows sqlite_master tables that +** The sqlite3ExprIsConstantOrFunction() is used for evaluating DEFAULT +** expressions in a CREATE TABLE statement. The Walker.eCode value is 5 +** when parsing an existing schema out of the sqlite_schema table and 4 +** when processing a new CREATE TABLE statement. A bound parameter raises +** an error for new statements, but is silently converted +** to NULL for existing schemas. This allows sqlite_schema tables that ** contain a bound parameter because they were generated by older versions ** of SQLite to be parsed by newer versions of SQLite without raising a ** malformed schema error. @@ -96537,9 +109646,9 @@ SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr *pExpr){ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ /* If pWalker->eCode is 2 then any term of the expression that comes from - ** the ON or USING clauses of a left join disqualifies the expression + ** the ON or USING clauses of an outer join disqualifies the expression ** from being considered constant. */ - if( pWalker->eCode==2 && ExprHasProperty(pExpr, EP_FromJoin) ){ + if( pWalker->eCode==2 && ExprHasProperty(pExpr, EP_OuterON) ){ pWalker->eCode = 0; return WRC_Abort; } @@ -96549,7 +109658,10 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ ** and either pWalker->eCode==4 or 5 or the function has the ** SQLITE_FUNC_CONST flag. */ case TK_FUNCTION: - if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){ + if( (pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc)) + && !ExprHasProperty(pExpr, EP_WinFunc) + ){ + if( pWalker->eCode==5 ) ExprSetProperty(pExpr, EP_FromDDL); return WRC_Continue; }else{ pWalker->eCode = 0; @@ -96561,7 +109673,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ if( sqlite3ExprIdToTrueFalse(pExpr) ){ return WRC_Prune; } - /* Fall thru */ + /* no break */ deliberate_fall_through case TK_COLUMN: case TK_AGG_FUNCTION: case TK_AGG_COLUMN: @@ -96569,21 +109681,26 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ testcase( pExpr->op==TK_COLUMN ); testcase( pExpr->op==TK_AGG_FUNCTION ); testcase( pExpr->op==TK_AGG_COLUMN ); + if( ExprHasProperty(pExpr, EP_FixedCol) && pWalker->eCode!=2 ){ + return WRC_Continue; + } if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){ return WRC_Continue; } - /* Fall through */ + /* no break */ deliberate_fall_through case TK_IF_NULL_ROW: case TK_REGISTER: + case TK_DOT: testcase( pExpr->op==TK_REGISTER ); testcase( pExpr->op==TK_IF_NULL_ROW ); + testcase( pExpr->op==TK_DOT ); pWalker->eCode = 0; return WRC_Abort; case TK_VARIABLE: if( pWalker->eCode==5 ){ /* Silently convert bound parameters that appear inside of CREATE ** statements into a NULL when parsing the CREATE statement text out - ** of the sqlite_master table */ + ** of the sqlite_schema table */ pExpr->op = TK_NULL; }else if( pWalker->eCode==4 ){ /* A bound parameter in a CREATE statement that originates from @@ -96591,7 +109708,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ pWalker->eCode = 0; return WRC_Abort; } - /* Fall through */ + /* no break */ deliberate_fall_through default: testcase( pExpr->op==TK_SELECT ); /* sqlite3SelectWalkFail() disallows */ testcase( pExpr->op==TK_EXISTS ); /* sqlite3SelectWalkFail() disallows */ @@ -96624,10 +109741,17 @@ SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr *p){ } /* -** Walk an expression tree. Return non-zero if the expression is constant -** that does no originate from the ON or USING clauses of a join. -** Return 0 if it involves variables or function calls or terms from -** an ON or USING clause. +** Walk an expression tree. Return non-zero if +** +** (1) the expression is constant, and +** (2) the expression does originate in the ON or USING clause +** of a LEFT JOIN, and +** (3) the expression does not contain any EP_FixedCol TK_COLUMN +** operands created by the constant propagation optimization. +** +** When this routine returns true, it indicates that the expression +** can be added to the pParse->pConstExpr list and evaluated once when +** the prepared statement starts up. See sqlite3ExprCodeRunJustOnce(). */ SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){ return exprIsConst(p, 2, 0); @@ -96643,6 +109767,78 @@ SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr *p, int iCur){ return exprIsConst(p, 3, iCur); } +/* +** Check pExpr to see if it is an constraint on the single data source +** pSrc = &pSrcList->a[iSrc]. In other words, check to see if pExpr +** constrains pSrc but does not depend on any other tables or data +** sources anywhere else in the query. Return true (non-zero) if pExpr +** is a constraint on pSrc only. +** +** This is an optimization. False negatives will perhaps cause slower +** queries, but false positives will yield incorrect answers. So when in +** doubt, return 0. +** +** To be an single-source constraint, the following must be true: +** +** (1) pExpr cannot refer to any table other than pSrc->iCursor. +** +** (2) pExpr cannot use subqueries or non-deterministic functions. +** +** (3) pSrc cannot be part of the left operand for a RIGHT JOIN. +** (Is there some way to relax this constraint?) +** +** (4) If pSrc is the right operand of a LEFT JOIN, then... +** (4a) pExpr must come from an ON clause.. +** (4b) and specifically the ON clause associated with the LEFT JOIN. +** +** (5) If pSrc is not the right operand of a LEFT JOIN or the left +** operand of a RIGHT JOIN, then pExpr must be from the WHERE +** clause, not an ON clause. +** +** (6) Either: +** +** (6a) pExpr does not originate in an ON or USING clause, or +** +** (6b) The ON or USING clause from which pExpr is derived is +** not to the left of a RIGHT JOIN (or FULL JOIN). +** +** Without this restriction, accepting pExpr as a single-table +** constraint might move the the ON/USING filter expression +** from the left side of a RIGHT JOIN over to the right side, +** which leads to incorrect answers. See also restriction (9) +** on push-down. +*/ +SQLITE_PRIVATE int sqlite3ExprIsSingleTableConstraint( + Expr *pExpr, /* The constraint */ + const SrcList *pSrcList, /* Complete FROM clause */ + int iSrc /* Which element of pSrcList to use */ +){ + const SrcItem *pSrc = &pSrcList->a[iSrc]; + if( pSrc->fg.jointype & JT_LTORJ ){ + return 0; /* rule (3) */ + } + if( pSrc->fg.jointype & JT_LEFT ){ + if( !ExprHasProperty(pExpr, EP_OuterON) ) return 0; /* rule (4a) */ + if( pExpr->w.iJoin!=pSrc->iCursor ) return 0; /* rule (4b) */ + }else{ + if( ExprHasProperty(pExpr, EP_OuterON) ) return 0; /* rule (5) */ + } + if( ExprHasProperty(pExpr, EP_OuterON|EP_InnerON) /* (6a) */ + && (pSrcList->a[0].fg.jointype & JT_LTORJ)!=0 /* Fast pre-test of (6b) */ + ){ + int jj; + for(jj=0; jjw.iJoin==pSrcList->a[jj].iCursor ){ + if( (pSrcList->a[jj].fg.jointype & JT_LTORJ)!=0 ){ + return 0; /* restriction (6) */ + } + break; + } + } + } + return sqlite3ExprIsTableConstant(pExpr, pSrc->iCursor); /* rules (1), (2) */ +} + /* ** sqlite3WalkExpr() callback used by sqlite3ExprIsConstantOrGroupBy(). @@ -96657,14 +109853,14 @@ static int exprNodeIsConstantOrGroupBy(Walker *pWalker, Expr *pExpr){ Expr *p = pGroupBy->a[i].pExpr; if( sqlite3ExprCompare(0, pExpr, p, -1)<2 ){ CollSeq *pColl = sqlite3ExprNNCollSeq(pWalker->pParse, p); - if( sqlite3_stricmp("BINARY", pColl->zName)==0 ){ + if( sqlite3IsBinary(pColl) ){ return WRC_Prune; } } } /* Check if pExpr is a sub-select. If so, consider it variable. */ - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ pWalker->eCode = 0; return WRC_Abort; } @@ -96674,7 +109870,7 @@ static int exprNodeIsConstantOrGroupBy(Walker *pWalker, Expr *pExpr){ /* ** Walk the expression tree passed as the first argument. Return non-zero -** if the expression consists entirely of constants or copies of terms +** if the expression consists entirely of constants or copies of terms ** in pGroupBy that sort with the BINARY collation sequence. ** ** This routine is used to determine if a term of the HAVING clause can @@ -96703,9 +109899,21 @@ SQLITE_PRIVATE int sqlite3ExprIsConstantOrGroupBy(Parse *pParse, Expr *p, ExprLi } /* -** Walk an expression tree. Return non-zero if the expression is constant -** or a function call with constant arguments. Return and 0 if there -** are any variables. +** Walk an expression tree for the DEFAULT field of a column definition +** in a CREATE TABLE statement. Return non-zero if the expression is +** acceptable for use as a DEFAULT. That is to say, return non-zero if +** the expression is constant or a function call with constant arguments. +** Return and 0 if there are any variables. +** +** isInit is true when parsing from sqlite_schema. isInit is false when +** processing a new CREATE TABLE statement. When isInit is true, parameters +** (such as ? or $abc) in the expression are converted into NULL. When +** isInit is false, parameters raise an error. Parameters should not be +** allowed in a CREATE TABLE statement, but some legacy versions of SQLite +** allowed it, so we need to support it when reading sqlite_schema for +** backwards compatibility. +** +** If isInit is true, set EP_FromDDL on every TK_FUNCTION node. ** ** For the purposes of this function, a double-quoted string (ex: "abc") ** is considered a variable but a single-quoted string (ex: 'abc') is @@ -96740,9 +109948,9 @@ SQLITE_PRIVATE int sqlite3ExprContainsSubquery(Expr *p){ ** in *pValue. If the expression is not an integer or if it is too big ** to fit in a signed 32-bit integer, return 0 and leave *pValue unchanged. */ -SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){ +SQLITE_PRIVATE int sqlite3ExprIsInteger(const Expr *p, int *pValue){ int rc = 0; - if( p==0 ) return 0; /* Can only happen following on OOM */ + if( NEVER(p==0) ) return 0; /* Used to only happen following on OOM */ /* If an expression is an integer literal that fits in a signed 32-bit ** integer, then the EP_IntValue flag will have already been set */ @@ -96759,9 +109967,9 @@ SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){ break; } case TK_UMINUS: { - int v; + int v = 0; if( sqlite3ExprIsInteger(p->pLeft, &v) ){ - assert( v!=(-2147483647-1) ); + assert( ((unsigned int)v)!=0x80000000 ); *pValue = -v; rc = 1; } @@ -96776,7 +109984,7 @@ SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){ ** Return FALSE if there is no chance that the expression can be NULL. ** ** If the expression might be NULL or if the expression is too complex -** to tell return TRUE. +** to tell return TRUE. ** ** This routine is used as an optimization, to skip OP_IsNull opcodes ** when we know that a value cannot be NULL. Hence, a false positive @@ -96788,7 +109996,11 @@ SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){ */ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){ u8 op; - while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; } + assert( p!=0 ); + while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ + p = p->pLeft; + assert( p!=0 ); + } op = p->op; if( op==TK_REGISTER ) op = p->op2; switch( op ){ @@ -96798,9 +110010,12 @@ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){ case TK_BLOB: return 0; case TK_COLUMN: + assert( ExprUseYTab(p) ); return ExprHasProperty(p, EP_CanBeNull) || - p->pTab==0 || /* Reference to column of index on expression */ - (p->iColumn>=0 && p->pTab->aCol[p->iColumn].notNull==0); + p->y.pTab==0 || /* Reference to column of index on expression */ + (p->iColumn>=0 + && p->y.pTab->aCol!=0 /* Possible due to prior error */ + && p->y.pTab->aCol[p->iColumn].notNull==0); default: return 1; } @@ -96818,27 +110033,30 @@ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){ */ SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr *p, char aff){ u8 op; + int unaryMinus = 0; if( aff==SQLITE_AFF_BLOB ) return 1; - while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; } + while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ + if( p->op==TK_UMINUS ) unaryMinus = 1; + p = p->pLeft; + } op = p->op; if( op==TK_REGISTER ) op = p->op2; switch( op ){ case TK_INTEGER: { - return aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC; + return aff>=SQLITE_AFF_NUMERIC; } case TK_FLOAT: { - return aff==SQLITE_AFF_REAL || aff==SQLITE_AFF_NUMERIC; + return aff>=SQLITE_AFF_NUMERIC; } case TK_STRING: { - return aff==SQLITE_AFF_TEXT; + return !unaryMinus && aff==SQLITE_AFF_TEXT; } case TK_BLOB: { - return 1; + return !unaryMinus; } case TK_COLUMN: { assert( p->iTable>=0 ); /* p cannot be part of a CHECK constraint */ - return p->iColumn<0 - && (aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC); + return aff>=SQLITE_AFF_NUMERIC && p->iColumn<0; } default: { return 0; @@ -96857,20 +110075,20 @@ SQLITE_PRIVATE int sqlite3IsRowid(const char *z){ } /* -** pX is the RHS of an IN operator. If pX is a SELECT statement +** pX is the RHS of an IN operator. If pX is a SELECT statement ** that can be simplified to a direct table access, then return ** a pointer to the SELECT statement. If pX is not a SELECT statement, -** or if the SELECT statement needs to be manifested into a transient +** or if the SELECT statement needs to be materialized into a transient ** table, then return NULL. */ #ifndef SQLITE_OMIT_SUBQUERY -static Select *isCandidateForInOpt(Expr *pX){ +static Select *isCandidateForInOpt(const Expr *pX){ Select *p; SrcList *pSrc; ExprList *pEList; Table *pTab; int i; - if( !ExprHasProperty(pX, EP_xIsSelect) ) return 0; /* Not a subquery */ + if( !ExprUseXSelect(pX) ) return 0; /* Not a subquery */ if( ExprHasProperty(pX, EP_VarSelect) ) return 0; /* Correlated subq */ p = pX->x.pSelect; if( p->pPrior ) return 0; /* Not a compound SELECT */ @@ -96888,7 +110106,7 @@ static Select *isCandidateForInOpt(Expr *pX){ if( pSrc->a[0].pSelect ) return 0; /* FROM is not a subquery or view */ pTab = pSrc->a[0].pTab; assert( pTab!=0 ); - assert( pTab->pSelect==0 ); /* FROM clause is not a view */ + assert( !IsView(pTab) ); /* FROM clause is not a view */ if( IsVirtual(pTab) ) return 0; /* FROM clause not a virtual table */ pEList = p->pEList; assert( pEList!=0 ); @@ -96923,7 +110141,7 @@ static void sqlite3SetHasNullFlag(Vdbe *v, int iCur, int regHasNull){ #ifndef SQLITE_OMIT_SUBQUERY /* -** The argument is an IN operator with a list (not a subquery) on the +** The argument is an IN operator with a list (not a subquery) on the ** right-hand side. Return TRUE if that list is constant. */ static int sqlite3InRhsIsConstant(Expr *pIn){ @@ -96948,7 +110166,7 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** all members of the RHS set, skipping duplicates. ** ** A cursor is opened on the b-tree object that is the RHS of the IN operator -** and pX->iTable is set to the index of that cursor. +** and the *piTab parameter is set to the index of that cursor. ** ** The returned value of this function indicates the b-tree type, as follows: ** @@ -96956,7 +110174,7 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** IN_INDEX_INDEX_ASC - The cursor was opened on an ascending index. ** IN_INDEX_INDEX_DESC - The cursor was opened on a descending index. ** IN_INDEX_EPH - The cursor was opened on a specially created and -** populated epheremal table. +** populated ephemeral table. ** IN_INDEX_NOOP - No cursor was allocated. The IN operator must be ** implemented as a sequence of comparisons. ** @@ -96968,7 +110186,10 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** If the RHS of the IN operator is a list or a more complex subquery, then ** an ephemeral table might need to be generated from the RHS and then ** pX->iTable made to point to the ephemeral table instead of an -** existing table. +** existing table. In this case, the creation and initialization of the +** ephemeral table might be put inside of a subroutine, the EP_Subrtn flag +** will be set on pX and the pX->y.sub fields will be set to show where +** the subroutine is coded. ** ** The inFlags parameter must contain, at a minimum, one of the bits ** IN_INDEX_MEMBERSHIP or IN_INDEX_LOOP but not both. If inFlags contains @@ -96978,13 +110199,13 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** ** When IN_INDEX_LOOP is used (and the b-tree will be used to iterate ** through the set members) then the b-tree must not contain duplicates. -** An epheremal table will be created unless the selected columns are guaranteed +** An ephemeral table will be created unless the selected columns are guaranteed ** to be unique - either because it is an INTEGER PRIMARY KEY or due to ** a UNIQUE constraint or index. ** -** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used -** for fast set membership tests) then an epheremal table must -** be used unless is a single INTEGER PRIMARY KEY column or an +** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used +** for fast set membership tests) then an ephemeral table must +** be used unless is a single INTEGER PRIMARY KEY column or an ** index can be found with the specified as its left-most. ** ** If the IN_INDEX_NOOP_OK and IN_INDEX_MEMBERSHIP are both set and @@ -96996,7 +110217,7 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** ** When the b-tree is being used for membership tests, the calling function ** might need to know whether or not the RHS side of the IN operator -** contains a NULL. If prRhsHasNull is not a NULL pointer and +** contains a NULL. If prRhsHasNull is not a NULL pointer and ** if there is any chance that the (...) might contain a NULL value at ** runtime, then a register is allocated and the register number written ** to *prRhsHasNull. If there is no chance that the (...) contains a @@ -97021,26 +110242,28 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ #ifndef SQLITE_OMIT_SUBQUERY SQLITE_PRIVATE int sqlite3FindInIndex( Parse *pParse, /* Parsing context */ - Expr *pX, /* The right-hand side (RHS) of the IN operator */ + Expr *pX, /* The IN expression */ u32 inFlags, /* IN_INDEX_LOOP, _MEMBERSHIP, and/or _NOOP_OK */ int *prRhsHasNull, /* Register holding NULL status. See notes */ - int *aiMap /* Mapping from Index fields to RHS fields */ + int *aiMap, /* Mapping from Index fields to RHS fields */ + int *piTab /* OUT: index to use */ ){ Select *p; /* SELECT to the right of IN operator */ int eType = 0; /* Type of RHS table. IN_INDEX_* */ - int iTab = pParse->nTab++; /* Cursor of the RHS table */ + int iTab; /* Cursor of the RHS table */ int mustBeUnique; /* True if RHS must be unique */ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */ assert( pX->op==TK_IN ); mustBeUnique = (inFlags & IN_INDEX_LOOP)!=0; + iTab = pParse->nTab++; - /* If the RHS of this IN(...) operator is a SELECT, and if it matters + /* If the RHS of this IN(...) operator is a SELECT, and if it matters ** whether or not the SELECT result contains NULL values, check whether - ** or not NULL is actually possible (it may not be, for example, due + ** or not NULL is actually possible (it may not be, for example, due ** to NOT NULL constraints in the schema). If no NULL values are possible, ** set prRhsHasNull to 0 before continuing. */ - if( prRhsHasNull && (pX->flags & EP_xIsSelect) ){ + if( prRhsHasNull && ExprUseXSelect(pX) ){ int i; ExprList *pEList = pX->x.pSelect->pEList; for(i=0; inExpr; i++){ @@ -97052,12 +110275,12 @@ SQLITE_PRIVATE int sqlite3FindInIndex( } /* Check to see if an existing table or index can be used to - ** satisfy the query. This is preferable to generating a new + ** satisfy the query. This is preferable to generating a new ** ephemeral table. */ if( pParse->nErr==0 && (p = isCandidateForInOpt(pX))!=0 ){ sqlite3 *db = pParse->db; /* Database connection */ Table *pTab; /* Table . */ - i16 iDb; /* Database idx for pTab */ + int iDb; /* Database idx for pTab */ ExprList *pEList = p->pEList; int nExpr = pEList->nExpr; @@ -97068,6 +110291,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex( /* Code an OP_Transaction and OP_TableLock for
                . */ iDb = sqlite3SchemaToIndex(db, pTab->pSchema); + assert( iDb>=0 && iDbtnum, 0, pTab->zName); @@ -97079,14 +110303,15 @@ SQLITE_PRIVATE int sqlite3FindInIndex( sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead); eType = IN_INDEX_ROWID; - + ExplainQueryPlan((pParse, 0, + "USING ROWID SEARCH ON TABLE %s FOR IN-OPERATOR",pTab->zName)); sqlite3VdbeJumpHere(v, iAddr); }else{ Index *pIdx; /* Iterator variable */ int affinity_ok = 1; int i; - /* Check that the affinity that will be used to perform each + /* Check that the affinity that will be used to perform each ** comparison is the same as the affinity of each column in table ** on the RHS of the IN operator. If it not, it is not possible to ** use any index of the RHS table. */ @@ -97118,6 +110343,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex( Bitmask colUsed; /* Columns of the index used */ Bitmask mCol; /* Mask for the current column */ if( pIdx->nColumnpPartIdxWhere!=0 ) continue; /* Maximum nColumn is BMS-2, not BMS-1, so that we can compute ** BITMASK(nExpr) without overflowing */ testcase( pIdx->nColumn==BMS-2 ); @@ -97130,15 +110356,14 @@ SQLITE_PRIVATE int sqlite3FindInIndex( continue; /* This index is not unique over the IN RHS columns */ } } - + colUsed = 0; /* Columns of index used so far */ for(i=0; ipLeft, i); Expr *pRhs = pEList->a[i].pExpr; CollSeq *pReq = sqlite3BinaryCompareCollSeq(pParse, pLhs, pRhs); int j; - - assert( pReq!=0 || pRhs->iColumn==XN_ROWID || pParse->nErr ); + for(j=0; jaiColumn[j]!=pRhs->iColumn ) continue; assert( pIdx->azColl[j] ); @@ -97153,7 +110378,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex( colUsed |= mCol; if( aiMap ) aiMap[i] = j; } - + assert( i==nExpr || colUsed!=(MASKBIT(nExpr)-1) ); if( colUsed==(MASKBIT(nExpr)-1) ){ /* If we reach this point, that means the index pIdx is usable */ @@ -97165,11 +110390,11 @@ SQLITE_PRIVATE int sqlite3FindInIndex( VdbeComment((v, "%s", pIdx->zName)); assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 ); eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0]; - + if( prRhsHasNull ){ #ifdef SQLITE_ENABLE_COLUMN_USED_MASK i64 mask = (1<nMem; @@ -97193,9 +110418,11 @@ SQLITE_PRIVATE int sqlite3FindInIndex( */ if( eType==0 && (inFlags & IN_INDEX_NOOP_OK) - && !ExprHasProperty(pX, EP_xIsSelect) + && ExprUseXList(pX) && (!sqlite3InRhsIsConstant(pX) || pX->x.pList->nExpr<=2) ){ + pParse->nTab--; /* Back out the allocation of the unused cursor */ + iTab = -1; /* Cursor is not allocated */ eType = IN_INDEX_NOOP; } @@ -97208,16 +110435,15 @@ SQLITE_PRIVATE int sqlite3FindInIndex( eType = IN_INDEX_EPH; if( inFlags & IN_INDEX_LOOP ){ pParse->nQueryLoop = 0; - if( pX->pLeft->iColumn<0 && !ExprHasProperty(pX, EP_xIsSelect) ){ - eType = IN_INDEX_ROWID; - } }else if( prRhsHasNull ){ *prRhsHasNull = rMayHaveNull = ++pParse->nMem; } - sqlite3CodeSubselect(pParse, pX, rMayHaveNull, eType==IN_INDEX_ROWID); + assert( pX->op==TK_IN ); + sqlite3CodeRhsOfIN(pParse, pX, iTab); + if( rMayHaveNull ){ + sqlite3SetHasNullFlag(v, iTab, rMayHaveNull); + } pParse->nQueryLoop = savedNQueryLoop; - }else{ - pX->iTable = iTab; } if( aiMap && eType!=IN_INDEX_INDEX_ASC && eType!=IN_INDEX_INDEX_DESC ){ @@ -97225,23 +110451,24 @@ SQLITE_PRIVATE int sqlite3FindInIndex( n = sqlite3ExprVectorSize(pX->pLeft); for(i=0; ipLeft; int nVal = sqlite3ExprVectorSize(pLeft); - Select *pSelect = (pExpr->flags & EP_xIsSelect) ? pExpr->x.pSelect : 0; + Select *pSelect = ExprUseXSelect(pExpr) ? pExpr->x.pSelect : 0; char *zRet; assert( pExpr->op==TK_IN ); @@ -97265,20 +110492,22 @@ static char *exprINAffinity(Parse *pParse, Expr *pExpr){ #ifndef SQLITE_OMIT_SUBQUERY /* -** Load the Parse object passed as the first argument with an error +** Load the Parse object passed as the first argument with an error ** message of the form: ** ** "sub-select returns N columns - expected M" -*/ +*/ SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpect){ - const char *zFmt = "sub-select returns %d columns - expected %d"; - sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect); + if( pParse->nErr==0 ){ + const char *zFmt = "sub-select returns %d columns - expected %d"; + sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect); + } } #endif /* ** Expression pExpr is a vector that has been used in a context where -** it is not permitted. If pExpr is a sub-select vector, this routine +** it is not permitted. If pExpr is a sub-select vector, this routine ** loads the Parse object with a message of the form: ** ** "sub-select returns N columns - expected 1" @@ -97286,10 +110515,10 @@ SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpec ** Or, if it is a regular scalar vector: ** ** "row value misused" -*/ +*/ SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse *pParse, Expr *pExpr){ #ifndef SQLITE_OMIT_SUBQUERY - if( pExpr->flags & EP_xIsSelect ){ + if( ExprUseXSelect(pExpr) ){ sqlite3SubselectError(pParse, pExpr->x.pSelect->pEList->nExpr, 1); }else #endif @@ -97298,49 +110527,268 @@ SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse *pParse, Expr *pExpr){ } } +#ifndef SQLITE_OMIT_SUBQUERY /* -** Generate code for scalar subqueries used as a subquery expression, EXISTS, -** or IN operators. Examples: +** Generate code that will construct an ephemeral table containing all terms +** in the RHS of an IN operator. The IN operator can be in either of two +** forms: ** -** (SELECT a FROM b) -- subquery -** EXISTS (SELECT a FROM b) -- EXISTS subquery ** x IN (4,5,11) -- IN operator with list on right-hand side ** x IN (SELECT a FROM b) -- IN operator with subquery on the right ** -** The pExpr parameter describes the expression that contains the IN -** operator or subquery. +** The pExpr parameter is the IN operator. The cursor number for the +** constructed ephemeral table is returned. The first time the ephemeral +** table is computed, the cursor number is also stored in pExpr->iTable, +** however the cursor number returned might not be the same, as it might +** have been duplicated using OP_OpenDup. ** -** If parameter isRowid is non-zero, then expression pExpr is guaranteed -** to be of the form " IN (?, ?, ?)", where is a reference -** to some integer key column of a table B-Tree. In this case, use an -** intkey B-Tree to store the set of IN(...) values instead of the usual -** (slower) variable length keys B-Tree. +** If the LHS expression ("x" in the examples) is a column value, or +** the SELECT statement returns a column value, then the affinity of that +** column is used to build the index keys. If both 'x' and the +** SELECT... statement are columns, then numeric affinity is used +** if either column has NUMERIC or INTEGER affinity. If neither +** 'x' nor the SELECT... statement are columns, then numeric affinity +** is used. +*/ +SQLITE_PRIVATE void sqlite3CodeRhsOfIN( + Parse *pParse, /* Parsing context */ + Expr *pExpr, /* The IN operator */ + int iTab /* Use this cursor number */ +){ + int addrOnce = 0; /* Address of the OP_Once instruction at top */ + int addr; /* Address of OP_OpenEphemeral instruction */ + Expr *pLeft; /* the LHS of the IN operator */ + KeyInfo *pKeyInfo = 0; /* Key information */ + int nVal; /* Size of vector pLeft */ + Vdbe *v; /* The prepared statement under construction */ + + v = pParse->pVdbe; + assert( v!=0 ); + + /* The evaluation of the IN must be repeated every time it + ** is encountered if any of the following is true: + ** + ** * The right-hand side is a correlated subquery + ** * The right-hand side is an expression list containing variables + ** * We are inside a trigger + ** + ** If all of the above are false, then we can compute the RHS just once + ** and reuse it many names. + */ + if( !ExprHasProperty(pExpr, EP_VarSelect) && pParse->iSelfTab==0 ){ + /* Reuse of the RHS is allowed */ + /* If this routine has already been coded, but the previous code + ** might not have been invoked yet, so invoke it now as a subroutine. + */ + if( ExprHasProperty(pExpr, EP_Subrtn) ){ + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + if( ExprUseXSelect(pExpr) ){ + ExplainQueryPlan((pParse, 0, "REUSE LIST SUBQUERY %d", + pExpr->x.pSelect->selId)); + } + assert( ExprUseYSub(pExpr) ); + sqlite3VdbeAddOp2(v, OP_Gosub, pExpr->y.sub.regReturn, + pExpr->y.sub.iAddr); + assert( iTab!=pExpr->iTable ); + sqlite3VdbeAddOp2(v, OP_OpenDup, iTab, pExpr->iTable); + sqlite3VdbeJumpHere(v, addrOnce); + return; + } + + /* Begin coding the subroutine */ + assert( !ExprUseYWin(pExpr) ); + ExprSetProperty(pExpr, EP_Subrtn); + assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) ); + pExpr->y.sub.regReturn = ++pParse->nMem; + pExpr->y.sub.iAddr = + sqlite3VdbeAddOp2(v, OP_BeginSubrtn, 0, pExpr->y.sub.regReturn) + 1; + + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + } + + /* Check to see if this is a vector IN operator */ + pLeft = pExpr->pLeft; + nVal = sqlite3ExprVectorSize(pLeft); + + /* Construct the ephemeral table that will contain the content of + ** RHS of the IN operator. + */ + pExpr->iTable = iTab; + addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pExpr->iTable, nVal); +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + if( ExprUseXSelect(pExpr) ){ + VdbeComment((v, "Result of SELECT %u", pExpr->x.pSelect->selId)); + }else{ + VdbeComment((v, "RHS of IN operator")); + } +#endif + pKeyInfo = sqlite3KeyInfoAlloc(pParse->db, nVal, 1); + + if( ExprUseXSelect(pExpr) ){ + /* Case 1: expr IN (SELECT ...) + ** + ** Generate code to write the results of the select into the temporary + ** table allocated and opened above. + */ + Select *pSelect = pExpr->x.pSelect; + ExprList *pEList = pSelect->pEList; + + ExplainQueryPlan((pParse, 1, "%sLIST SUBQUERY %d", + addrOnce?"":"CORRELATED ", pSelect->selId + )); + /* If the LHS and RHS of the IN operator do not match, that + ** error will have been caught long before we reach this point. */ + if( ALWAYS(pEList->nExpr==nVal) ){ + Select *pCopy; + SelectDest dest; + int i; + int rc; + sqlite3SelectDestInit(&dest, SRT_Set, iTab); + dest.zAffSdst = exprINAffinity(pParse, pExpr); + pSelect->iLimit = 0; + testcase( pSelect->selFlags & SF_Distinct ); + testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */ + pCopy = sqlite3SelectDup(pParse->db, pSelect, 0); + rc = pParse->db->mallocFailed ? 1 :sqlite3Select(pParse, pCopy, &dest); + sqlite3SelectDelete(pParse->db, pCopy); + sqlite3DbFree(pParse->db, dest.zAffSdst); + if( rc ){ + sqlite3KeyInfoUnref(pKeyInfo); + return; + } + assert( pKeyInfo!=0 ); /* OOM will cause exit after sqlite3Select() */ + assert( pEList!=0 ); + assert( pEList->nExpr>0 ); + assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); + for(i=0; iaColl[i] = sqlite3BinaryCompareCollSeq( + pParse, p, pEList->a[i].pExpr + ); + } + } + }else if( ALWAYS(pExpr->x.pList!=0) ){ + /* Case 2: expr IN (exprlist) + ** + ** For each expression, build an index key from the evaluation and + ** store it in the temporary table. If is a column, then use + ** that columns affinity when building index keys. If is not + ** a column, use numeric affinity. + */ + char affinity; /* Affinity of the LHS of the IN */ + int i; + ExprList *pList = pExpr->x.pList; + struct ExprList_item *pItem; + int r1, r2; + affinity = sqlite3ExprAffinity(pLeft); + if( affinity<=SQLITE_AFF_NONE ){ + affinity = SQLITE_AFF_BLOB; + }else if( affinity==SQLITE_AFF_REAL ){ + affinity = SQLITE_AFF_NUMERIC; + } + if( pKeyInfo ){ + assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); + pKeyInfo->aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft); + } + + /* Loop through each expression in . */ + r1 = sqlite3GetTempReg(pParse); + r2 = sqlite3GetTempReg(pParse); + for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){ + Expr *pE2 = pItem->pExpr; + + /* If the expression is not constant then we will need to + ** disable the test that was generated above that makes sure + ** this code only executes once. Because for a non-constant + ** expression we need to rerun this code each time. + */ + if( addrOnce && !sqlite3ExprIsConstant(pE2) ){ + sqlite3VdbeChangeToNoop(v, addrOnce-1); + sqlite3VdbeChangeToNoop(v, addrOnce); + ExprClearProperty(pExpr, EP_Subrtn); + addrOnce = 0; + } + + /* Evaluate the expression and insert it into the temp table */ + sqlite3ExprCode(pParse, pE2, r1); + sqlite3VdbeAddOp4(v, OP_MakeRecord, r1, 1, r2, &affinity, 1); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r2, r1, 1); + } + sqlite3ReleaseTempReg(pParse, r1); + sqlite3ReleaseTempReg(pParse, r2); + } + if( pKeyInfo ){ + sqlite3VdbeChangeP4(v, addr, (void *)pKeyInfo, P4_KEYINFO); + } + if( addrOnce ){ + sqlite3VdbeAddOp1(v, OP_NullRow, iTab); + sqlite3VdbeJumpHere(v, addrOnce); + /* Subroutine return */ + assert( ExprUseYSub(pExpr) ); + assert( sqlite3VdbeGetOp(v,pExpr->y.sub.iAddr-1)->opcode==OP_BeginSubrtn + || pParse->nErr ); + sqlite3VdbeAddOp3(v, OP_Return, pExpr->y.sub.regReturn, + pExpr->y.sub.iAddr, 1); + VdbeCoverage(v); + sqlite3ClearTempRegCache(pParse); + } +} +#endif /* SQLITE_OMIT_SUBQUERY */ + +/* +** Generate code for scalar subqueries used as a subquery expression +** or EXISTS operator: ** -** If rMayHaveNull is non-zero, that means that the operation is an IN -** (not a SELECT or EXISTS) and that the RHS might contains NULLs. -** All this routine does is initialize the register given by rMayHaveNull -** to NULL. Calling routines will take care of changing this register -** value to non-NULL if the RHS is NULL-free. +** (SELECT a FROM b) -- subquery +** EXISTS (SELECT a FROM b) -- EXISTS subquery ** -** For a SELECT or EXISTS operator, return the register that holds the -** result. For a multi-column SELECT, the result is stored in a contiguous -** array of registers and the return value is the register of the left-most -** result column. Return 0 for IN operators or if an error occurs. +** The pExpr parameter is the SELECT or EXISTS operator to be coded. +** +** Return the register that holds the result. For a multi-column SELECT, +** the result is stored in a contiguous array of registers and the +** return value is the register of the left-most result column. +** Return 0 if an error occurs. */ #ifndef SQLITE_OMIT_SUBQUERY -SQLITE_PRIVATE int sqlite3CodeSubselect( - Parse *pParse, /* Parsing context */ - Expr *pExpr, /* The IN, SELECT, or EXISTS operator */ - int rHasNullFlag, /* Register that records whether NULLs exist in RHS */ - int isRowid /* If true, LHS of IN operator is a rowid */ -){ - int jmpIfDynamic = -1; /* One-time test address */ - int rReg = 0; /* Register storing resulting */ - Vdbe *v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return 0; - sqlite3ExprCachePush(pParse); +SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *pParse, Expr *pExpr){ + int addrOnce = 0; /* Address of OP_Once at top of subroutine */ + int rReg = 0; /* Register storing resulting */ + Select *pSel; /* SELECT statement to encode */ + SelectDest dest; /* How to deal with SELECT result */ + int nReg; /* Registers to allocate */ + Expr *pLimit; /* New limit expression */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrExplain; /* Address of OP_Explain instruction */ +#endif - /* The evaluation of the IN/EXISTS/SELECT must be repeated every time it + Vdbe *v = pParse->pVdbe; + assert( v!=0 ); + if( pParse->nErr ) return 0; + testcase( pExpr->op==TK_EXISTS ); + testcase( pExpr->op==TK_SELECT ); + assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT ); + assert( ExprUseXSelect(pExpr) ); + pSel = pExpr->x.pSelect; + + /* If this routine has already been coded, then invoke it as a + ** subroutine. */ + if( ExprHasProperty(pExpr, EP_Subrtn) ){ + ExplainQueryPlan((pParse, 0, "REUSE SUBQUERY %d", pSel->selId)); + assert( ExprUseYSub(pExpr) ); + sqlite3VdbeAddOp2(v, OP_Gosub, pExpr->y.sub.regReturn, + pExpr->y.sub.iAddr); + return pExpr->iTable; + } + + /* Begin coding the subroutine */ + assert( !ExprUseYWin(pExpr) ); + assert( !ExprHasProperty(pExpr, EP_Reduced|EP_TokenOnly) ); + ExprSetProperty(pExpr, EP_Subrtn); + pExpr->y.sub.regReturn = ++pParse->nMem; + pExpr->y.sub.iAddr = + sqlite3VdbeAddOp2(v, OP_BeginSubrtn, 0, pExpr->y.sub.regReturn) + 1; + + /* The evaluation of the EXISTS/SELECT must be repeated every time it ** is encountered if any of the following is true: ** ** * The right-hand side is a correlated subquery @@ -97351,226 +110799,88 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** save the results, and reuse the same result on subsequent invocations. */ if( !ExprHasProperty(pExpr, EP_VarSelect) ){ - jmpIfDynamic = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); } - switch( pExpr->op ){ - case TK_IN: { - int addr; /* Address of OP_OpenEphemeral instruction */ - Expr *pLeft = pExpr->pLeft; /* the LHS of the IN operator */ - KeyInfo *pKeyInfo = 0; /* Key information */ - int nVal; /* Size of vector pLeft */ - - nVal = sqlite3ExprVectorSize(pLeft); - assert( !isRowid || nVal==1 ); - - /* Whether this is an 'x IN(SELECT...)' or an 'x IN()' - ** expression it is handled the same way. An ephemeral table is - ** filled with index keys representing the results from the - ** SELECT or the . - ** - ** If the 'x' expression is a column value, or the SELECT... - ** statement returns a column value, then the affinity of that - ** column is used to build the index keys. If both 'x' and the - ** SELECT... statement are columns, then numeric affinity is used - ** if either column has NUMERIC or INTEGER affinity. If neither - ** 'x' nor the SELECT... statement are columns, then numeric affinity - ** is used. - */ - pExpr->iTable = pParse->nTab++; - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, - pExpr->iTable, (isRowid?0:nVal)); - pKeyInfo = isRowid ? 0 : sqlite3KeyInfoAlloc(pParse->db, nVal, 1); - - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - /* Case 1: expr IN (SELECT ...) - ** - ** Generate code to write the results of the select into the temporary - ** table allocated and opened above. - */ - Select *pSelect = pExpr->x.pSelect; - ExprList *pEList = pSelect->pEList; - - ExplainQueryPlan((pParse, 1, "%sLIST SUBQUERY", - jmpIfDynamic>=0?"":"CORRELATED " - )); - assert( !isRowid ); - /* If the LHS and RHS of the IN operator do not match, that - ** error will have been caught long before we reach this point. */ - if( ALWAYS(pEList->nExpr==nVal) ){ - SelectDest dest; - int i; - sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable); - dest.zAffSdst = exprINAffinity(pParse, pExpr); - pSelect->iLimit = 0; - testcase( pSelect->selFlags & SF_Distinct ); - testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */ - if( sqlite3Select(pParse, pSelect, &dest) ){ - sqlite3DbFree(pParse->db, dest.zAffSdst); - sqlite3KeyInfoUnref(pKeyInfo); - return 0; - } - sqlite3DbFree(pParse->db, dest.zAffSdst); - assert( pKeyInfo!=0 ); /* OOM will cause exit after sqlite3Select() */ - assert( pEList!=0 ); - assert( pEList->nExpr>0 ); - assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); - for(i=0; iaColl[i] = sqlite3BinaryCompareCollSeq( - pParse, p, pEList->a[i].pExpr - ); - } - } - }else if( ALWAYS(pExpr->x.pList!=0) ){ - /* Case 2: expr IN (exprlist) - ** - ** For each expression, build an index key from the evaluation and - ** store it in the temporary table. If is a column, then use - ** that columns affinity when building index keys. If is not - ** a column, use numeric affinity. - */ - char affinity; /* Affinity of the LHS of the IN */ - int i; - ExprList *pList = pExpr->x.pList; - struct ExprList_item *pItem; - int r1, r2, r3; - affinity = sqlite3ExprAffinity(pLeft); - if( !affinity ){ - affinity = SQLITE_AFF_BLOB; - } - if( pKeyInfo ){ - assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); - pKeyInfo->aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft); - } - - /* Loop through each expression in . */ - r1 = sqlite3GetTempReg(pParse); - r2 = sqlite3GetTempReg(pParse); - if( isRowid ) sqlite3VdbeAddOp4(v, OP_Blob, 0, r2, 0, "", P4_STATIC); - for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){ - Expr *pE2 = pItem->pExpr; - int iValToIns; - - /* If the expression is not constant then we will need to - ** disable the test that was generated above that makes sure - ** this code only executes once. Because for a non-constant - ** expression we need to rerun this code each time. - */ - if( jmpIfDynamic>=0 && !sqlite3ExprIsConstant(pE2) ){ - sqlite3VdbeChangeToNoop(v, jmpIfDynamic); - jmpIfDynamic = -1; - } - - /* Evaluate the expression and insert it into the temp table */ - if( isRowid && sqlite3ExprIsInteger(pE2, &iValToIns) ){ - sqlite3VdbeAddOp3(v, OP_InsertInt, pExpr->iTable, r2, iValToIns); - }else{ - r3 = sqlite3ExprCodeTarget(pParse, pE2, r1); - if( isRowid ){ - sqlite3VdbeAddOp2(v, OP_MustBeInt, r3, - sqlite3VdbeCurrentAddr(v)+2); - VdbeCoverage(v); - sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3); - }else{ - sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1); - sqlite3ExprCacheAffinityChange(pParse, r3, 1); - sqlite3VdbeAddOp4Int(v, OP_IdxInsert, pExpr->iTable, r2, r3, 1); - } - } - } - sqlite3ReleaseTempReg(pParse, r1); - sqlite3ReleaseTempReg(pParse, r2); - } - if( pKeyInfo ){ - sqlite3VdbeChangeP4(v, addr, (void *)pKeyInfo, P4_KEYINFO); - } - break; - } - - case TK_EXISTS: - case TK_SELECT: - default: { - /* Case 3: (SELECT ... FROM ...) - ** or: EXISTS(SELECT ... FROM ...) - ** - ** For a SELECT, generate code to put the values for all columns of - ** the first row into an array of registers and return the index of - ** the first register. - ** - ** If this is an EXISTS, write an integer 0 (not exists) or 1 (exists) - ** into a register and return that register number. - ** - ** In both cases, the query is augmented with "LIMIT 1". Any - ** preexisting limit is discarded in place of the new LIMIT 1. - */ - Select *pSel; /* SELECT statement to encode */ - SelectDest dest; /* How to deal with SELECT result */ - int nReg; /* Registers to allocate */ - Expr *pLimit; /* New limit expression */ - - testcase( pExpr->op==TK_EXISTS ); - testcase( pExpr->op==TK_SELECT ); - assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT ); - assert( ExprHasProperty(pExpr, EP_xIsSelect) ); - - pSel = pExpr->x.pSelect; - ExplainQueryPlan((pParse, 1, "%sSCALAR SUBQUERY", - jmpIfDynamic>=0?"":"CORRELATED ")); - nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1; - sqlite3SelectDestInit(&dest, 0, pParse->nMem+1); - pParse->nMem += nReg; - if( pExpr->op==TK_SELECT ){ - dest.eDest = SRT_Mem; - dest.iSdst = dest.iSDParm; - dest.nSdst = nReg; - sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1); - VdbeComment((v, "Init subquery result")); - }else{ - dest.eDest = SRT_Exists; - sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iSDParm); - VdbeComment((v, "Init EXISTS result")); - } - pLimit = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[1], 0); - if( pSel->pLimit ){ - sqlite3ExprDelete(pParse->db, pSel->pLimit->pLeft); - pSel->pLimit->pLeft = pLimit; - }else{ - pSel->pLimit = sqlite3PExpr(pParse, TK_LIMIT, pLimit, 0); - } - pSel->iLimit = 0; - if( sqlite3Select(pParse, pSel, &dest) ){ - return 0; - } - rReg = dest.iSDParm; - ExprSetVVAProperty(pExpr, EP_NoReduce); - break; + /* For a SELECT, generate code to put the values for all columns of + ** the first row into an array of registers and return the index of + ** the first register. + ** + ** If this is an EXISTS, write an integer 0 (not exists) or 1 (exists) + ** into a register and return that register number. + ** + ** In both cases, the query is augmented with "LIMIT 1". Any + ** preexisting limit is discarded in place of the new LIMIT 1. + */ + ExplainQueryPlan2(addrExplain, (pParse, 1, "%sSCALAR SUBQUERY %d", + addrOnce?"":"CORRELATED ", pSel->selId)); + sqlite3VdbeScanStatusCounters(v, addrExplain, addrExplain, -1); + nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1; + sqlite3SelectDestInit(&dest, 0, pParse->nMem+1); + pParse->nMem += nReg; + if( pExpr->op==TK_SELECT ){ + dest.eDest = SRT_Mem; + dest.iSdst = dest.iSDParm; + dest.nSdst = nReg; + sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1); + VdbeComment((v, "Init subquery result")); + }else{ + dest.eDest = SRT_Exists; + sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iSDParm); + VdbeComment((v, "Init EXISTS result")); + } + if( pSel->pLimit ){ + /* The subquery already has a limit. If the pre-existing limit is X + ** then make the new limit X<>0 so that the new limit is either 1 or 0 */ + sqlite3 *db = pParse->db; + pLimit = sqlite3Expr(db, TK_INTEGER, "0"); + if( pLimit ){ + pLimit->affExpr = SQLITE_AFF_NUMERIC; + pLimit = sqlite3PExpr(pParse, TK_NE, + sqlite3ExprDup(db, pSel->pLimit->pLeft, 0), pLimit); } + sqlite3ExprDeferredDelete(pParse, pSel->pLimit->pLeft); + pSel->pLimit->pLeft = pLimit; + }else{ + /* If there is no pre-existing limit add a limit of 1 */ + pLimit = sqlite3Expr(pParse->db, TK_INTEGER, "1"); + pSel->pLimit = sqlite3PExpr(pParse, TK_LIMIT, pLimit, 0); } - - if( rHasNullFlag ){ - sqlite3SetHasNullFlag(v, pExpr->iTable, rHasNullFlag); + pSel->iLimit = 0; + if( sqlite3Select(pParse, pSel, &dest) ){ + pExpr->op2 = pExpr->op; + pExpr->op = TK_ERROR; + return 0; } - - if( jmpIfDynamic>=0 ){ - sqlite3VdbeJumpHere(v, jmpIfDynamic); + pExpr->iTable = rReg = dest.iSDParm; + ExprSetVVAProperty(pExpr, EP_NoReduce); + if( addrOnce ){ + sqlite3VdbeJumpHere(v, addrOnce); } - sqlite3ExprCachePop(pParse); + sqlite3VdbeScanStatusRange(v, addrExplain, addrExplain, -1); + /* Subroutine return */ + assert( ExprUseYSub(pExpr) ); + assert( sqlite3VdbeGetOp(v,pExpr->y.sub.iAddr-1)->opcode==OP_BeginSubrtn + || pParse->nErr ); + sqlite3VdbeAddOp3(v, OP_Return, pExpr->y.sub.regReturn, + pExpr->y.sub.iAddr, 1); + VdbeCoverage(v); + sqlite3ClearTempRegCache(pParse); return rReg; } #endif /* SQLITE_OMIT_SUBQUERY */ #ifndef SQLITE_OMIT_SUBQUERY /* -** Expr pIn is an IN(...) expression. This function checks that the -** sub-select on the RHS of the IN() operator has the same number of -** columns as the vector on the LHS. Or, if the RHS of the IN() is not +** Expr pIn is an IN(...) expression. This function checks that the +** sub-select on the RHS of the IN() operator has the same number of +** columns as the vector on the LHS. Or, if the RHS of the IN() is not ** a sub-query, that the LHS is a vector of size 1. */ SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse *pParse, Expr *pIn){ int nVector = sqlite3ExprVectorSize(pIn->pLeft); - if( (pIn->flags & EP_xIsSelect) ){ + if( ExprUseXSelect(pIn) && !pParse->db->mallocFailed ){ if( nVector!=pIn->x.pSelect->pEList->nExpr ){ sqlite3SubselectError(pParse, pIn->x.pSelect->pEList->nExpr, nVector); return 1; @@ -97590,18 +110900,18 @@ SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse *pParse, Expr *pIn){ ** x IN (SELECT ...) ** x IN (value, value, ...) ** -** The left-hand side (LHS) is a scalar or vector expression. The +** The left-hand side (LHS) is a scalar or vector expression. The ** right-hand side (RHS) is an array of zero or more scalar values, or a ** subquery. If the RHS is a subquery, the number of result columns must ** match the number of columns in the vector on the LHS. If the RHS is -** a list of values, the LHS must be a scalar. +** a list of values, the LHS must be a scalar. ** ** The IN operator is true if the LHS value is contained within the RHS. -** The result is false if the LHS is definitely not in the RHS. The -** result is NULL if the presence of the LHS in the RHS cannot be +** The result is false if the LHS is definitely not in the RHS. The +** result is NULL if the presence of the LHS in the RHS cannot be ** determined due to NULLs. ** -** This routine generates code that jumps to destIfFalse if the LHS is not +** This routine generates code that jumps to destIfFalse if the LHS is not ** contained within the RHS. If due to NULLs we cannot determine if the LHS ** is contained in the RHS then jump to destIfNull. If the LHS is contained ** within the RHS then fall through. @@ -97630,8 +110940,11 @@ static void sqlite3ExprCodeIN( int destStep6 = 0; /* Start of code for Step 6 */ int addrTruthOp; /* Address of opcode that determines the IN is true */ int destNotNull; /* Jump here if a comparison is not true in step 6 */ - int addrTop; /* Top of the step-6 loop */ + int addrTop; /* Top of the step-6 loop */ + int iTab = 0; /* Index to use */ + u8 okConstFactor = pParse->okConstFactor; + assert( !ExprHasVVAProperty(pExpr,EP_Immutable) ); pLeft = pExpr->pLeft; if( sqlite3ExprCheckIN(pParse, pExpr) ) return; zAff = exprINAffinity(pParse, pExpr); @@ -97642,7 +110955,7 @@ static void sqlite3ExprCodeIN( if( pParse->db->mallocFailed ) goto sqlite3ExprCodeIN_oom_error; /* Attempt to compute the RHS. After this step, if anything other than - ** IN_INDEX_NOOP is returned, the table opened ith cursor pExpr->iTable + ** IN_INDEX_NOOP is returned, the table opened with cursor iTab ** contains the values that make up the RHS. If IN_INDEX_NOOP is returned, ** the RHS has not yet been coded. */ v = pParse->pVdbe; @@ -97650,10 +110963,11 @@ static void sqlite3ExprCodeIN( VdbeNoopComment((v, "begin IN expr")); eType = sqlite3FindInIndex(pParse, pExpr, IN_INDEX_MEMBERSHIP | IN_INDEX_NOOP_OK, - destIfFalse==destIfNull ? 0 : &rRhsHasNull, aiMap); + destIfFalse==destIfNull ? 0 : &rRhsHasNull, + aiMap, &iTab); assert( pParse->nErr || nVector==1 || eType==IN_INDEX_EPH - || eType==IN_INDEX_INDEX_ASC || eType==IN_INDEX_INDEX_DESC + || eType==IN_INDEX_INDEX_ASC || eType==IN_INDEX_INDEX_DESC ); #ifdef SQLITE_DEBUG /* Confirm that aiMap[] contains nVector integer values between 0 and @@ -97665,17 +110979,22 @@ static void sqlite3ExprCodeIN( } #endif - /* Code the LHS, the from " IN (...)". If the LHS is a - ** vector, then it is stored in an array of nVector registers starting + /* Code the LHS, the from " IN (...)". If the LHS is a + ** vector, then it is stored in an array of nVector registers starting ** at r1. ** ** sqlite3FindInIndex() might have reordered the fields of the LHS vector ** so that the fields are in the same order as an existing index. The ** aiMap[] array contains a mapping from the original LHS field order to ** the field order that matches the RHS index. - */ - sqlite3ExprCachePush(pParse); + ** + ** Avoid factoring the LHS of the IN(...) expression out of the loop, + ** even if it is constant, as OP_Affinity may be used on the register + ** by code generated below. */ + assert( pParse->okConstFactor==okConstFactor ); + pParse->okConstFactor = 0; rLhsOrig = exprCodeVector(pParse, pLeft, &iDummy); + pParse->okConstFactor = okConstFactor; for(i=0; ix.pList; - CollSeq *pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft); - int labelOk = sqlite3VdbeMakeLabel(v); + ExprList *pList; + CollSeq *pColl; + int labelOk = sqlite3VdbeMakeLabel(pParse); int r2, regToFree; int regCkNull = 0; int ii; - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); + assert( ExprUseXList(pExpr) ); + pList = pExpr->x.pList; + pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft); if( destIfNull!=destIfFalse ){ regCkNull = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp3(v, OP_BitAnd, rLhs, rLhs, regCkNull); @@ -97711,19 +111032,25 @@ static void sqlite3ExprCodeIN( if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){ sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull); } + sqlite3ReleaseTempReg(pParse, regToFree); if( iinExpr-1 || destIfNull!=destIfFalse ){ - sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2, + int op = rLhs!=r2 ? OP_Eq : OP_NotNull; + sqlite3VdbeAddOp4(v, op, rLhs, labelOk, r2, (void*)pColl, P4_COLLSEQ); - VdbeCoverageIf(v, iinExpr-1); - VdbeCoverageIf(v, ii==pList->nExpr-1); + VdbeCoverageIf(v, iinExpr-1 && op==OP_Eq); + VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_Eq); + VdbeCoverageIf(v, iinExpr-1 && op==OP_NotNull); + VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_NotNull); sqlite3VdbeChangeP5(v, zAff[0]); }else{ + int op = rLhs!=r2 ? OP_Ne : OP_IsNull; assert( destIfNull==destIfFalse ); - sqlite3VdbeAddOp4(v, OP_Ne, rLhs, destIfFalse, r2, - (void*)pColl, P4_COLLSEQ); VdbeCoverage(v); + sqlite3VdbeAddOp4(v, op, rLhs, destIfFalse, r2, + (void*)pColl, P4_COLLSEQ); + VdbeCoverageIf(v, op==OP_Ne); + VdbeCoverageIf(v, op==OP_IsNull); sqlite3VdbeChangeP5(v, zAff[0] | SQLITE_JUMPIFNULL); } - sqlite3ReleaseTempReg(pParse, regToFree); } if( regCkNull ){ sqlite3VdbeAddOp2(v, OP_IsNull, regCkNull, destIfNull); VdbeCoverage(v); @@ -97741,10 +111068,11 @@ static void sqlite3ExprCodeIN( if( destIfNull==destIfFalse ){ destStep2 = destIfFalse; }else{ - destStep2 = destStep6 = sqlite3VdbeMakeLabel(v); + destStep2 = destStep6 = sqlite3VdbeMakeLabel(pParse); } for(i=0; ipLeft, i); + if( pParse->nErr ) goto sqlite3ExprCodeIN_oom_error; if( sqlite3ExprCanBeNull(p) ){ sqlite3VdbeAddOp2(v, OP_IsNull, rLhs+i, destStep2); VdbeCoverage(v); @@ -97759,19 +111087,19 @@ static void sqlite3ExprCodeIN( /* In this case, the RHS is the ROWID of table b-tree and so we also ** know that the RHS is non-NULL. Hence, we combine steps 3 and 4 ** into a single opcode. */ - sqlite3VdbeAddOp3(v, OP_SeekRowid, pExpr->iTable, destIfFalse, rLhs); + sqlite3VdbeAddOp3(v, OP_SeekRowid, iTab, destIfFalse, rLhs); VdbeCoverage(v); addrTruthOp = sqlite3VdbeAddOp0(v, OP_Goto); /* Return True */ }else{ sqlite3VdbeAddOp4(v, OP_Affinity, rLhs, nVector, 0, zAff, nVector); if( destIfFalse==destIfNull ){ /* Combine Step 3 and Step 5 into a single opcode */ - sqlite3VdbeAddOp4Int(v, OP_NotFound, pExpr->iTable, destIfFalse, + sqlite3VdbeAddOp4Int(v, OP_NotFound, iTab, destIfFalse, rLhs, nVector); VdbeCoverage(v); goto sqlite3ExprCodeIN_finished; } /* Ordinary Step 3, for the case where FALSE and NULL are distinct */ - addrTruthOp = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, + addrTruthOp = sqlite3VdbeAddOp4Int(v, OP_Found, iTab, 0, rLhs, nVector); VdbeCoverage(v); } @@ -97784,7 +111112,7 @@ static void sqlite3ExprCodeIN( } /* Step 5. If we do not care about the difference between NULL and - ** FALSE, then just return false. + ** FALSE, then just return false. */ if( destIfFalse==destIfNull ) sqlite3VdbeGoto(v, destIfFalse); @@ -97796,10 +111124,10 @@ static void sqlite3ExprCodeIN( ** of the RHS. */ if( destStep6 ) sqlite3VdbeResolveLabel(v, destStep6); - addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, pExpr->iTable, destIfFalse); + addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, destIfFalse); VdbeCoverage(v); if( nVector>1 ){ - destNotNull = sqlite3VdbeMakeLabel(v); + destNotNull = sqlite3VdbeMakeLabel(pParse); }else{ /* For nVector==1, combine steps 6 and 7 by immediately returning ** FALSE if the first comparison is not NULL */ @@ -97811,7 +111139,7 @@ static void sqlite3ExprCodeIN( int r3 = sqlite3GetTempReg(pParse); p = sqlite3VectorFieldSubexpr(pLeft, i); pColl = sqlite3ExprCollSeq(pParse, p); - sqlite3VdbeAddOp3(v, OP_Column, pExpr->iTable, i, r3); + sqlite3VdbeAddOp3(v, OP_Column, iTab, i, r3); sqlite3VdbeAddOp4(v, OP_Ne, rLhs+i, destNotNull, r3, (void*)pColl, P4_COLLSEQ); VdbeCoverage(v); @@ -97820,7 +111148,7 @@ static void sqlite3ExprCodeIN( sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfNull); if( nVector>1 ){ sqlite3VdbeResolveLabel(v, destNotNull); - sqlite3VdbeAddOp2(v, OP_Next, pExpr->iTable, addrTop+1); + sqlite3VdbeAddOp2(v, OP_Next, iTab, addrTop+1); VdbeCoverage(v); /* Step 7: If we reach this point, we know that the result must @@ -97833,7 +111161,6 @@ static void sqlite3ExprCodeIN( sqlite3ExprCodeIN_finished: if( rLhs!=rLhsOrig ) sqlite3ReleaseTempReg(pParse, rLhs); - sqlite3ExprCachePop(pParse); VdbeComment((v, "end IN expr")); sqlite3ExprCodeIN_oom_error: sqlite3DbFree(pParse->db, aiMap); @@ -97846,7 +111173,7 @@ sqlite3ExprCodeIN_oom_error: ** Generate an instruction that will put the floating point ** value described by z[0..n-1] into register iMem. ** -** The z[] string will probably not be zero-terminated. But the +** The z[] string will probably not be zero-terminated. But the ** z[n] character is guaranteed to be something that does not look ** like the continuation of the number. */ @@ -97883,11 +111210,12 @@ static void codeInteger(Parse *pParse, Expr *pExpr, int negFlag, int iMem){ c = sqlite3DecOrHexToI64(z, &value); if( (c==3 && !negFlag) || (c==2) || (negFlag && value==SMALLEST_INT64)){ #ifdef SQLITE_OMIT_FLOATING_POINT - sqlite3ErrorMsg(pParse, "oversized integer: %s%s", negFlag ? "-" : "", z); + sqlite3ErrorMsg(pParse, "oversized integer: %s%#T", negFlag?"-":"",pExpr); #else #ifndef SQLITE_OMIT_HEX_INTEGER if( sqlite3_strnicmp(z,"0x",2)==0 ){ - sqlite3ErrorMsg(pParse, "hex literal too big: %s%s", negFlag?"-":"",z); + sqlite3ErrorMsg(pParse, "hex literal too big: %s%#T", + negFlag?"-":"",pExpr); }else #endif { @@ -97901,145 +111229,6 @@ static void codeInteger(Parse *pParse, Expr *pExpr, int negFlag, int iMem){ } } -/* -** Erase column-cache entry number i -*/ -static void cacheEntryClear(Parse *pParse, int i){ - if( pParse->aColCache[i].tempReg ){ - if( pParse->nTempRegaTempReg) ){ - pParse->aTempReg[pParse->nTempReg++] = pParse->aColCache[i].iReg; - } - } - pParse->nColCache--; - if( inColCache ){ - pParse->aColCache[i] = pParse->aColCache[pParse->nColCache]; - } -} - - -/* -** Record in the column cache that a particular column from a -** particular table is stored in a particular register. -*/ -SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse *pParse, int iTab, int iCol, int iReg){ - int i; - int minLru; - int idxLru; - struct yColCache *p; - - /* Unless an error has occurred, register numbers are always positive. */ - assert( iReg>0 || pParse->nErr || pParse->db->mallocFailed ); - assert( iCol>=-1 && iCol<32768 ); /* Finite column numbers */ - - /* The SQLITE_ColumnCache flag disables the column cache. This is used - ** for testing only - to verify that SQLite always gets the same answer - ** with and without the column cache. - */ - if( OptimizationDisabled(pParse->db, SQLITE_ColumnCache) ) return; - - /* First replace any existing entry. - ** - ** Actually, the way the column cache is currently used, we are guaranteed - ** that the object will never already be in cache. Verify this guarantee. - */ -#ifndef NDEBUG - for(i=0, p=pParse->aColCache; inColCache; i++, p++){ - assert( p->iTable!=iTab || p->iColumn!=iCol ); - } -#endif - - /* If the cache is already full, delete the least recently used entry */ - if( pParse->nColCache>=SQLITE_N_COLCACHE ){ - minLru = 0x7fffffff; - idxLru = -1; - for(i=0, p=pParse->aColCache; ilrulru; - } - } - p = &pParse->aColCache[idxLru]; - }else{ - p = &pParse->aColCache[pParse->nColCache++]; - } - - /* Add the new entry to the end of the cache */ - p->iLevel = pParse->iCacheLevel; - p->iTable = iTab; - p->iColumn = iCol; - p->iReg = iReg; - p->tempReg = 0; - p->lru = pParse->iCacheCnt++; -} - -/* -** Indicate that registers between iReg..iReg+nReg-1 are being overwritten. -** Purge the range of registers from the column cache. -*/ -SQLITE_PRIVATE void sqlite3ExprCacheRemove(Parse *pParse, int iReg, int nReg){ - int i = 0; - while( inColCache ){ - struct yColCache *p = &pParse->aColCache[i]; - if( p->iReg >= iReg && p->iReg < iReg+nReg ){ - cacheEntryClear(pParse, i); - }else{ - i++; - } - } -} - -/* -** Remember the current column cache context. Any new entries added -** added to the column cache after this call are removed when the -** corresponding pop occurs. -*/ -SQLITE_PRIVATE void sqlite3ExprCachePush(Parse *pParse){ - pParse->iCacheLevel++; -#ifdef SQLITE_DEBUG - if( pParse->db->flags & SQLITE_VdbeAddopTrace ){ - printf("PUSH to %d\n", pParse->iCacheLevel); - } -#endif -} - -/* -** Remove from the column cache any entries that were added since the -** the previous sqlite3ExprCachePush operation. In other words, restore -** the cache to the state it was in prior the most recent Push. -*/ -SQLITE_PRIVATE void sqlite3ExprCachePop(Parse *pParse){ - int i = 0; - assert( pParse->iCacheLevel>=1 ); - pParse->iCacheLevel--; -#ifdef SQLITE_DEBUG - if( pParse->db->flags & SQLITE_VdbeAddopTrace ){ - printf("POP to %d\n", pParse->iCacheLevel); - } -#endif - while( inColCache ){ - if( pParse->aColCache[i].iLevel>pParse->iCacheLevel ){ - cacheEntryClear(pParse, i); - }else{ - i++; - } - } -} - -/* -** When a cached column is reused, make sure that its register is -** no longer available as a temp register. ticket #3879: that same -** register might be in the cache in multiple places, so be sure to -** get them all. -*/ -static void sqlite3ExprCachePinRegister(Parse *pParse, int iReg){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; inColCache; i++, p++){ - if( p->iReg==iReg ){ - p->tempReg = 0; - } - } -} /* Generate code that will load into register regOut a value that is ** appropriate for the iIdxCol-th column of index pIdx. @@ -98064,43 +111253,92 @@ SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn( } } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +/* +** Generate code that will compute the value of generated column pCol +** and store the result in register regOut +*/ +SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn( + Parse *pParse, /* Parsing context */ + Table *pTab, /* Table containing the generated column */ + Column *pCol, /* The generated column */ + int regOut /* Put the result in this register */ +){ + int iAddr; + Vdbe *v = pParse->pVdbe; + int nErr = pParse->nErr; + assert( v!=0 ); + assert( pParse->iSelfTab!=0 ); + if( pParse->iSelfTab>0 ){ + iAddr = sqlite3VdbeAddOp3(v, OP_IfNullRow, pParse->iSelfTab-1, 0, regOut); + }else{ + iAddr = 0; + } + sqlite3ExprCodeCopy(pParse, sqlite3ColumnExpr(pTab,pCol), regOut); + if( pCol->affinity>=SQLITE_AFF_TEXT ){ + sqlite3VdbeAddOp4(v, OP_Affinity, regOut, 1, 0, &pCol->affinity, 1); + } + if( iAddr ) sqlite3VdbeJumpHere(v, iAddr); + if( pParse->nErr>nErr ) pParse->db->errByteOffset = -1; +} +#endif /* SQLITE_OMIT_GENERATED_COLUMNS */ + /* ** Generate code to extract the value of the iCol-th column of a table. */ SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable( - Vdbe *v, /* The VDBE under construction */ + Vdbe *v, /* Parsing context */ Table *pTab, /* The table containing the value */ int iTabCur, /* The table cursor. Or the PK cursor for WITHOUT ROWID */ int iCol, /* Index of the column to extract */ int regOut /* Extract the value into this register */ ){ - if( pTab==0 ){ - sqlite3VdbeAddOp3(v, OP_Column, iTabCur, iCol, regOut); - return; - } + Column *pCol; + assert( v!=0 ); + assert( pTab!=0 ); + assert( iCol!=XN_EXPR ); if( iCol<0 || iCol==pTab->iPKey ){ sqlite3VdbeAddOp2(v, OP_Rowid, iTabCur, regOut); + VdbeComment((v, "%s.rowid", pTab->zName)); }else{ - int op = IsVirtual(pTab) ? OP_VColumn : OP_Column; - int x = iCol; - if( !HasRowid(pTab) && !IsVirtual(pTab) ){ - x = sqlite3ColumnOfIndex(sqlite3PrimaryKeyIndex(pTab), iCol); + int op; + int x; + if( IsVirtual(pTab) ){ + op = OP_VColumn; + x = iCol; +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + }else if( (pCol = &pTab->aCol[iCol])->colFlags & COLFLAG_VIRTUAL ){ + Parse *pParse = sqlite3VdbeParser(v); + if( pCol->colFlags & COLFLAG_BUSY ){ + sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"", + pCol->zCnName); + }else{ + int savedSelfTab = pParse->iSelfTab; + pCol->colFlags |= COLFLAG_BUSY; + pParse->iSelfTab = iTabCur+1; + sqlite3ExprCodeGeneratedColumn(pParse, pTab, pCol, regOut); + pParse->iSelfTab = savedSelfTab; + pCol->colFlags &= ~COLFLAG_BUSY; + } + return; +#endif + }else if( !HasRowid(pTab) ){ + testcase( iCol!=sqlite3TableColumnToStorage(pTab, iCol) ); + x = sqlite3TableColumnToIndex(sqlite3PrimaryKeyIndex(pTab), iCol); + op = OP_Column; + }else{ + x = sqlite3TableColumnToStorage(pTab,iCol); + testcase( x!=iCol ); + op = OP_Column; } sqlite3VdbeAddOp3(v, op, iTabCur, x, regOut); - } - if( iCol>=0 ){ sqlite3ColumnDefault(v, pTab, iCol, regOut); } } /* ** Generate code that will extract the iColumn-th column from -** table pTab and store the column value in a register. -** -** An effort is made to store the column value in register iReg. This -** is not garanteeed for GetColumn() - the result can be stored in -** any register. But the result is guaranteed to land in register iReg -** for GetColumnToReg(). +** table pTab and store the column value in register iReg. ** ** There must be an open cursor to pTab in iTable when this routine ** is called. If iColumn<0 then code is generated that extracts the rowid. @@ -98113,103 +111351,34 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn( int iReg, /* Store results here */ u8 p5 /* P5 value for OP_Column + FLAGS */ ){ - Vdbe *v = pParse->pVdbe; - int i; - struct yColCache *p; - - for(i=0, p=pParse->aColCache; inColCache; i++, p++){ - if( p->iTable==iTable && p->iColumn==iColumn ){ - p->lru = pParse->iCacheCnt++; - sqlite3ExprCachePinRegister(pParse, p->iReg); - return p->iReg; - } - } - assert( v!=0 ); - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTable, iColumn, iReg); + assert( pParse->pVdbe!=0 ); + assert( (p5 & (OPFLAG_NOCHNG|OPFLAG_TYPEOFARG|OPFLAG_LENGTHARG))==p5 ); + assert( IsVirtual(pTab) || (p5 & OPFLAG_NOCHNG)==0 ); + sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pTab, iTable, iColumn, iReg); if( p5 ){ - sqlite3VdbeChangeP5(v, p5); - }else{ - sqlite3ExprCacheStore(pParse, iTable, iColumn, iReg); + VdbeOp *pOp = sqlite3VdbeGetLastOp(pParse->pVdbe); + if( pOp->opcode==OP_Column ) pOp->p5 = p5; + if( pOp->opcode==OP_VColumn ) pOp->p5 = (p5 & OPFLAG_NOCHNG); } return iReg; } -SQLITE_PRIVATE void sqlite3ExprCodeGetColumnToReg( - Parse *pParse, /* Parsing and code generating context */ - Table *pTab, /* Description of the table we are reading from */ - int iColumn, /* Index of the table column */ - int iTable, /* The cursor pointing to the table */ - int iReg /* Store results here */ -){ - int r1 = sqlite3ExprCodeGetColumn(pParse, pTab, iColumn, iTable, iReg, 0); - if( r1!=iReg ) sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, r1, iReg); -} - - -/* -** Clear all column cache entries. -*/ -SQLITE_PRIVATE void sqlite3ExprCacheClear(Parse *pParse){ - int i; - -#ifdef SQLITE_DEBUG - if( pParse->db->flags & SQLITE_VdbeAddopTrace ){ - printf("CLEAR\n"); - } -#endif - for(i=0; inColCache; i++){ - if( pParse->aColCache[i].tempReg - && pParse->nTempRegaTempReg) - ){ - pParse->aTempReg[pParse->nTempReg++] = pParse->aColCache[i].iReg; - } - } - pParse->nColCache = 0; -} - -/* -** Record the fact that an affinity change has occurred on iCount -** registers starting with iStart. -*/ -SQLITE_PRIVATE void sqlite3ExprCacheAffinityChange(Parse *pParse, int iStart, int iCount){ - sqlite3ExprCacheRemove(pParse, iStart, iCount); -} /* ** Generate code to move content from registers iFrom...iFrom+nReg-1 -** over to iTo..iTo+nReg-1. Keep the column cache up-to-date. +** over to iTo..iTo+nReg-1. */ SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){ - assert( iFrom>=iTo+nReg || iFrom+nReg<=iTo ); sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg); - sqlite3ExprCacheRemove(pParse, iFrom, nReg); } -#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) -/* -** Return true if any register in the range iFrom..iTo (inclusive) -** is used as part of the column cache. -** -** This routine is used within assert() and testcase() macros only -** and does not appear in a normal build. -*/ -static int usedAsColumnCache(Parse *pParse, int iFrom, int iTo){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; inColCache; i++, p++){ - int r = p->iReg; - if( r>=iFrom && r<=iTo ) return 1; /*NO_TEST*/ - } - return 0; -} -#endif /* SQLITE_DEBUG || SQLITE_COVERAGE_TEST */ - - /* ** Convert a scalar expression node to a TK_REGISTER referencing ** register iReg. The caller must ensure that iReg already contains ** the correct value for the expression. */ -static void exprToRegister(Expr *p, int iReg){ +static void exprToRegister(Expr *pExpr, int iReg){ + Expr *p = sqlite3ExprSkipCollateAndLikely(pExpr); + if( NEVER(p==0) ) return; p->op2 = p->op; p->op = TK_REGISTER; p->iTable = iReg; @@ -98218,7 +111387,7 @@ static void exprToRegister(Expr *p, int iReg){ /* ** Evaluate an expression (either a vector or a scalar expression) and store -** the result in continguous temporary registers. Return the index of +** the result in contiguous temporary registers. Return the index of ** the first register used to store the result. ** ** If the returned result register is a temporary scalar, then also write @@ -98237,12 +111406,13 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){ #if SQLITE_OMIT_SUBQUERY iResult = 0; #else - iResult = sqlite3CodeSubselect(pParse, p, 0, 0); + iResult = sqlite3CodeSubselect(pParse, p); #endif }else{ int i; iResult = pParse->nMem+1; pParse->nMem += nResult; + assert( ExprUseXList(p) ); for(i=0; ix.pList->a[i].pExpr, i+iResult); } @@ -98251,6 +111421,195 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){ return iResult; } +/* +** If the last opcode is a OP_Copy, then set the do-not-merge flag (p5) +** so that a subsequent copy will not be merged into this one. +*/ +static void setDoNotMergeFlagOnCopy(Vdbe *v){ + if( sqlite3VdbeGetLastOp(v)->opcode==OP_Copy ){ + sqlite3VdbeChangeP5(v, 1); /* Tag trailing OP_Copy as not mergeable */ + } +} + +/* +** Generate code to implement special SQL functions that are implemented +** in-line rather than by using the usual callbacks. +*/ +static int exprCodeInlineFunction( + Parse *pParse, /* Parsing context */ + ExprList *pFarg, /* List of function arguments */ + int iFuncId, /* Function ID. One of the INTFUNC_... values */ + int target /* Store function result in this register */ +){ + int nFarg; + Vdbe *v = pParse->pVdbe; + assert( v!=0 ); + assert( pFarg!=0 ); + nFarg = pFarg->nExpr; + assert( nFarg>0 ); /* All in-line functions have at least one argument */ + switch( iFuncId ){ + case INLINEFUNC_coalesce: { + /* Attempt a direct implementation of the built-in COALESCE() and + ** IFNULL() functions. This avoids unnecessary evaluation of + ** arguments past the first non-NULL argument. + */ + int endCoalesce = sqlite3VdbeMakeLabel(pParse); + int i; + assert( nFarg>=2 ); + sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target); + for(i=1; ia[i].pExpr, target); + } + setDoNotMergeFlagOnCopy(v); + sqlite3VdbeResolveLabel(v, endCoalesce); + break; + } + case INLINEFUNC_iif: { + Expr caseExpr; + memset(&caseExpr, 0, sizeof(caseExpr)); + caseExpr.op = TK_CASE; + caseExpr.x.pList = pFarg; + return sqlite3ExprCodeTarget(pParse, &caseExpr, target); + } +#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC + case INLINEFUNC_sqlite_offset: { + Expr *pArg = pFarg->a[0].pExpr; + if( pArg->op==TK_COLUMN && pArg->iTable>=0 ){ + sqlite3VdbeAddOp3(v, OP_Offset, pArg->iTable, pArg->iColumn, target); + }else{ + sqlite3VdbeAddOp2(v, OP_Null, 0, target); + } + break; + } +#endif + default: { + /* The UNLIKELY() function is a no-op. The result is the value + ** of the first argument. + */ + assert( nFarg==1 || nFarg==2 ); + target = sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target); + break; + } + + /*********************************************************************** + ** Test-only SQL functions that are only usable if enabled + ** via SQLITE_TESTCTRL_INTERNAL_FUNCTIONS + */ +#if !defined(SQLITE_UNTESTABLE) + case INLINEFUNC_expr_compare: { + /* Compare two expressions using sqlite3ExprCompare() */ + assert( nFarg==2 ); + sqlite3VdbeAddOp2(v, OP_Integer, + sqlite3ExprCompare(0,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1), + target); + break; + } + + case INLINEFUNC_expr_implies_expr: { + /* Compare two expressions using sqlite3ExprImpliesExpr() */ + assert( nFarg==2 ); + sqlite3VdbeAddOp2(v, OP_Integer, + sqlite3ExprImpliesExpr(pParse,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1), + target); + break; + } + + case INLINEFUNC_implies_nonnull_row: { + /* Result of sqlite3ExprImpliesNonNullRow() */ + Expr *pA1; + assert( nFarg==2 ); + pA1 = pFarg->a[1].pExpr; + if( pA1->op==TK_COLUMN ){ + sqlite3VdbeAddOp2(v, OP_Integer, + sqlite3ExprImpliesNonNullRow(pFarg->a[0].pExpr,pA1->iTable,1), + target); + }else{ + sqlite3VdbeAddOp2(v, OP_Null, 0, target); + } + break; + } + + case INLINEFUNC_affinity: { + /* The AFFINITY() function evaluates to a string that describes + ** the type affinity of the argument. This is used for testing of + ** the SQLite type logic. + */ + const char *azAff[] = { "blob", "text", "numeric", "integer", + "real", "flexnum" }; + char aff; + assert( nFarg==1 ); + aff = sqlite3ExprAffinity(pFarg->a[0].pExpr); + assert( aff<=SQLITE_AFF_NONE + || (aff>=SQLITE_AFF_BLOB && aff<=SQLITE_AFF_FLEXNUM) ); + sqlite3VdbeLoadString(v, target, + (aff<=SQLITE_AFF_NONE) ? "none" : azAff[aff-SQLITE_AFF_BLOB]); + break; + } +#endif /* !defined(SQLITE_UNTESTABLE) */ + } + return target; +} + +/* +** Check to see if pExpr is one of the indexed expressions on pParse->pIdxEpr. +** If it is, then resolve the expression by reading from the index and +** return the register into which the value has been read. If pExpr is +** not an indexed expression, then return negative. +*/ +static SQLITE_NOINLINE int sqlite3IndexedExprLookup( + Parse *pParse, /* The parsing context */ + Expr *pExpr, /* The expression to potentially bypass */ + int target /* Where to store the result of the expression */ +){ + IndexedExpr *p; + Vdbe *v; + for(p=pParse->pIdxEpr; p; p=p->pIENext){ + u8 exprAff; + int iDataCur = p->iDataCur; + if( iDataCur<0 ) continue; + if( pParse->iSelfTab ){ + if( p->iDataCur!=pParse->iSelfTab-1 ) continue; + iDataCur = -1; + } + if( sqlite3ExprCompare(0, pExpr, p->pExpr, iDataCur)!=0 ) continue; + assert( p->aff>=SQLITE_AFF_BLOB && p->aff<=SQLITE_AFF_NUMERIC ); + exprAff = sqlite3ExprAffinity(pExpr); + if( (exprAff<=SQLITE_AFF_BLOB && p->aff!=SQLITE_AFF_BLOB) + || (exprAff==SQLITE_AFF_TEXT && p->aff!=SQLITE_AFF_TEXT) + || (exprAff>=SQLITE_AFF_NUMERIC && p->aff!=SQLITE_AFF_NUMERIC) + ){ + /* Affinity mismatch on a generated column */ + continue; + } + + v = pParse->pVdbe; + assert( v!=0 ); + if( p->bMaybeNullRow ){ + /* If the index is on a NULL row due to an outer join, then we + ** cannot extract the value from the index. The value must be + ** computed using the original expression. */ + int addr = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp3(v, OP_IfNullRow, p->iIdxCur, addr+3, target); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Column, p->iIdxCur, p->iIdxCol, target); + VdbeComment((v, "%s expr-column %d", p->zIdxName, p->iIdxCol)); + sqlite3VdbeGoto(v, 0); + p = pParse->pIdxEpr; + pParse->pIdxEpr = 0; + sqlite3ExprCode(pParse, pExpr, target); + pParse->pIdxEpr = p; + sqlite3VdbeJumpHere(v, addr+2); + }else{ + sqlite3VdbeAddOp3(v, OP_Column, p->iIdxCur, p->iIdxCol, target); + VdbeComment((v, "%s expr-column %d", p->zIdxName, p->iIdxCol)); + } + return target; + } + return -1; /* Not found */ +} + /* ** Generate code into the current Vdbe to evaluate the given @@ -98274,46 +111633,147 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) int p5 = 0; assert( target>0 && target<=pParse->nMem ); - if( v==0 ){ - assert( pParse->db->mallocFailed ); - return 0; - } + assert( v!=0 ); expr_code_doover: if( pExpr==0 ){ op = TK_NULL; + }else if( pParse->pIdxEpr!=0 + && !ExprHasProperty(pExpr, EP_Leaf) + && (r1 = sqlite3IndexedExprLookup(pParse, pExpr, target))>=0 + ){ + return r1; }else{ + assert( !ExprHasVVAProperty(pExpr,EP_Immutable) ); op = pExpr->op; } switch( op ){ case TK_AGG_COLUMN: { AggInfo *pAggInfo = pExpr->pAggInfo; - struct AggInfo_col *pCol = &pAggInfo->aCol[pExpr->iAgg]; + struct AggInfo_col *pCol; + assert( pAggInfo!=0 ); + assert( pExpr->iAgg>=0 ); + if( pExpr->iAgg>=pAggInfo->nColumn ){ + /* Happens when the left table of a RIGHT JOIN is null and + ** is using an expression index */ + sqlite3VdbeAddOp2(v, OP_Null, 0, target); +#ifdef SQLITE_VDBE_COVERAGE + /* Verify that the OP_Null above is exercised by tests + ** tag-20230325-2 */ + sqlite3VdbeAddOp2(v, OP_NotNull, target, 1); + VdbeCoverageNeverTaken(v); +#endif + break; + } + pCol = &pAggInfo->aCol[pExpr->iAgg]; if( !pAggInfo->directMode ){ - assert( pCol->iMem>0 ); - return pCol->iMem; + return AggInfoColumnReg(pAggInfo, pExpr->iAgg); }else if( pAggInfo->useSortingIdx ){ + Table *pTab = pCol->pTab; sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab, pCol->iSorterColumn, target); + if( pTab==0 ){ + /* No comment added */ + }else if( pCol->iColumn<0 ){ + VdbeComment((v,"%s.rowid",pTab->zName)); + }else{ + VdbeComment((v,"%s.%s", + pTab->zName, pTab->aCol[pCol->iColumn].zCnName)); + if( pTab->aCol[pCol->iColumn].affinity==SQLITE_AFF_REAL ){ + sqlite3VdbeAddOp1(v, OP_RealAffinity, target); + } + } + return target; + }else if( pExpr->y.pTab==0 ){ + /* This case happens when the argument to an aggregate function + ** is rewritten by aggregateConvertIndexedExprRefToColumn() */ + sqlite3VdbeAddOp3(v, OP_Column, pExpr->iTable, pExpr->iColumn, target); return target; } /* Otherwise, fall thru into the TK_COLUMN case */ + /* no break */ deliberate_fall_through } case TK_COLUMN: { int iTab = pExpr->iTable; + int iReg; + if( ExprHasProperty(pExpr, EP_FixedCol) ){ + /* This COLUMN expression is really a constant due to WHERE clause + ** constraints, and that constant is coded by the pExpr->pLeft + ** expression. However, make sure the constant has the correct + ** datatype by applying the Affinity of the table column to the + ** constant. + */ + int aff; + iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target); + assert( ExprUseYTab(pExpr) ); + assert( pExpr->y.pTab!=0 ); + aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn); + if( aff>SQLITE_AFF_BLOB ){ + static const char zAff[] = "B\000C\000D\000E\000F"; + assert( SQLITE_AFF_BLOB=='A' ); + assert( SQLITE_AFF_TEXT=='B' ); + sqlite3VdbeAddOp4(v, OP_Affinity, iReg, 1, 0, + &zAff[(aff-'B')*2], P4_STATIC); + } + return iReg; + } if( iTab<0 ){ if( pParse->iSelfTab<0 ){ - /* Generating CHECK constraints or inserting into partial index */ - return pExpr->iColumn - pParse->iSelfTab; + /* Other columns in the same row for CHECK constraints or + ** generated columns or for inserting into partial index. + ** The row is unpacked into registers beginning at + ** 0-(pParse->iSelfTab). The rowid (if any) is in a register + ** immediately prior to the first column. + */ + Column *pCol; + Table *pTab; + int iSrc; + int iCol = pExpr->iColumn; + assert( ExprUseYTab(pExpr) ); + pTab = pExpr->y.pTab; + assert( pTab!=0 ); + assert( iCol>=XN_ROWID ); + assert( iColnCol ); + if( iCol<0 ){ + return -1-pParse->iSelfTab; + } + pCol = pTab->aCol + iCol; + testcase( iCol!=sqlite3TableColumnToStorage(pTab,iCol) ); + iSrc = sqlite3TableColumnToStorage(pTab, iCol) - pParse->iSelfTab; +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( pCol->colFlags & COLFLAG_GENERATED ){ + if( pCol->colFlags & COLFLAG_BUSY ){ + sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"", + pCol->zCnName); + return 0; + } + pCol->colFlags |= COLFLAG_BUSY; + if( pCol->colFlags & COLFLAG_NOTAVAIL ){ + sqlite3ExprCodeGeneratedColumn(pParse, pTab, pCol, iSrc); + } + pCol->colFlags &= ~(COLFLAG_BUSY|COLFLAG_NOTAVAIL); + return iSrc; + }else +#endif /* SQLITE_OMIT_GENERATED_COLUMNS */ + if( pCol->affinity==SQLITE_AFF_REAL ){ + sqlite3VdbeAddOp2(v, OP_SCopy, iSrc, target); + sqlite3VdbeAddOp1(v, OP_RealAffinity, target); + return target; + }else{ + return iSrc; + } }else{ /* Coding an expression that is part of an index where column names ** in the index refer to the table to which the index belongs */ iTab = pParse->iSelfTab - 1; } } - return sqlite3ExprCodeGetColumn(pParse, pExpr->pTab, + assert( ExprUseYTab(pExpr) ); + assert( pExpr->y.pTab!=0 ); + iReg = sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab, pExpr->iColumn, iTab, target, pExpr->op2); + return iReg; } case TK_INTEGER: { codeInteger(pParse, pExpr, 0, target); @@ -98335,7 +111795,12 @@ expr_code_doover: sqlite3VdbeLoadString(v, target, pExpr->u.zToken); return target; } - case TK_NULL: { + default: { + /* Make NULL the default case so that if a bug causes an illegal + ** Expr node to be passed into this function, it will be handled + ** sanely and not crash. But keep the assert() to bring the problem + ** to the attention of the developers. */ + assert( op==TK_NULL || op==TK_ERROR || pParse->db->mallocFailed ); sqlite3VdbeAddOp2(v, OP_Null, 0, target); return target; } @@ -98362,7 +111827,7 @@ expr_code_doover: sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target); if( pExpr->u.zToken[1]!=0 ){ const char *z = sqlite3VListNumToName(pParse->pVList, pExpr->iColumn); - assert( pExpr->u.zToken[0]=='?' || strcmp(pExpr->u.zToken, z)==0 ); + assert( pExpr->u.zToken[0]=='?' || (z && !strcmp(pExpr->u.zToken, z)) ); pParse->pVList[0] = 0; /* Indicate VList may no longer be enlarged */ sqlite3VdbeAppendP4(v, (char*)z, P4_STATIC); } @@ -98374,15 +111839,11 @@ expr_code_doover: #ifndef SQLITE_OMIT_CAST case TK_CAST: { /* Expressions of the form: CAST(pLeft AS token) */ - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - if( inReg!=target ){ - sqlite3VdbeAddOp2(v, OP_SCopy, inReg, target); - inReg = target; - } + sqlite3ExprCode(pParse, pExpr->pLeft, target); + assert( inReg==target ); + assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3VdbeAddOp2(v, OP_Cast, target, sqlite3AffinityType(pExpr->u.zToken, 0)); - testcase( usedAsColumnCache(pParse, inReg, inReg) ); - sqlite3ExprCacheAffinityChange(pParse, inReg, 1); return inReg; } #endif /* SQLITE_OMIT_CAST */ @@ -98403,14 +111864,21 @@ expr_code_doover: }else{ r1 = sqlite3ExprCodeTemp(pParse, pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - codeCompare(pParse, pLeft, pExpr->pRight, op, - r1, r2, inReg, SQLITE_STOREP2 | p5); + sqlite3VdbeAddOp2(v, OP_Integer, 1, inReg); + codeCompare(pParse, pLeft, pExpr->pRight, op, r1, r2, + sqlite3VdbeCurrentAddr(v)+2, p5, + ExprHasProperty(pExpr,EP_Commuted)); assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); assert(TK_GE==OP_Ge); testcase(op==OP_Ge); VdbeCoverageIf(v,op==OP_Ge); assert(TK_EQ==OP_Eq); testcase(op==OP_Eq); VdbeCoverageIf(v,op==OP_Eq); assert(TK_NE==OP_Ne); testcase(op==OP_Ne); VdbeCoverageIf(v,op==OP_Ne); + if( p5==SQLITE_NULLEQ ){ + sqlite3VdbeAddOp2(v, OP_Integer, 0, inReg); + }else{ + sqlite3VdbeAddOp3(v, OP_ZeroOrNull, r1, inReg, r2); + } testcase( regFree1==0 ); testcase( regFree2==0 ); } @@ -98426,7 +111894,7 @@ expr_code_doover: case TK_BITOR: case TK_SLASH: case TK_LSHIFT: - case TK_RSHIFT: + case TK_RSHIFT: case TK_CONCAT: { assert( TK_AND==OP_And ); testcase( op==TK_AND ); assert( TK_OR==OP_Or ); testcase( op==TK_OR ); @@ -98462,6 +111930,7 @@ expr_code_doover: tempX.op = TK_INTEGER; tempX.flags = EP_IntValue|EP_TokenOnly; tempX.u.iValue = 0; + ExprClearVVAProperties(&tempX); r1 = sqlite3ExprCodeTemp(pParse, &tempX, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free2); sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target); @@ -98507,11 +111976,14 @@ expr_code_doover: } case TK_AGG_FUNCTION: { AggInfo *pInfo = pExpr->pAggInfo; - if( pInfo==0 ){ + if( pInfo==0 + || NEVER(pExpr->iAgg<0) + || NEVER(pExpr->iAgg>=pInfo->nFunc) + ){ assert( !ExprHasProperty(pExpr, EP_IntValue) ); - sqlite3ErrorMsg(pParse, "misuse of aggregate: %s()", pExpr->u.zToken); + sqlite3ErrorMsg(pParse, "misuse of aggregate: %#T()", pExpr); }else{ - return pInfo->aFunc[pExpr->iAgg].iMem; + return AggInfoFuncReg(pInfo, pExpr->iAgg); } break; } @@ -98526,17 +111998,20 @@ expr_code_doover: u8 enc = ENC(db); /* The text encoding used by this database */ CollSeq *pColl = 0; /* A collating sequence */ +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + return pExpr->y.pWin->regResult; + } +#endif + if( ConstFactorOk(pParse) && sqlite3ExprIsConstantNotJoin(pExpr) ){ - /* SQL functions can be expensive. So try to move constant functions - ** out of the inner loop, even if that means an extra OP_Copy. */ - return sqlite3ExprCodeAtInit(pParse, pExpr, -1); - } - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - if( ExprHasProperty(pExpr, EP_TokenOnly) ){ - pFarg = 0; - }else{ - pFarg = pExpr->x.pList; + /* SQL functions can be expensive. So try to avoid running them + ** multiple times if we know they always give the same result */ + return sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1); } + assert( !ExprHasProperty(pExpr, EP_TokenOnly) ); + assert( ExprUseXList(pExpr) ); + pFarg = pExpr->x.pList; nFarg = pFarg ? pFarg->nExpr : 0; assert( !ExprHasProperty(pExpr, EP_IntValue) ); zId = pExpr->u.zToken; @@ -98547,54 +112022,18 @@ expr_code_doover: } #endif if( pDef==0 || pDef->xFinalize!=0 ){ - sqlite3ErrorMsg(pParse, "unknown function: %s()", zId); + sqlite3ErrorMsg(pParse, "unknown function: %#T()", pExpr); break; } - - /* Attempt a direct implementation of the built-in COALESCE() and - ** IFNULL() functions. This avoids unnecessary evaluation of - ** arguments past the first non-NULL argument. - */ - if( pDef->funcFlags & SQLITE_FUNC_COALESCE ){ - int endCoalesce = sqlite3VdbeMakeLabel(v); - assert( nFarg>=2 ); - sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target); - for(i=1; ia[i].pExpr, target); - sqlite3ExprCachePop(pParse); - } - sqlite3VdbeResolveLabel(v, endCoalesce); - break; + if( (pDef->funcFlags & SQLITE_FUNC_INLINE)!=0 && ALWAYS(pFarg!=0) ){ + assert( (pDef->funcFlags & SQLITE_FUNC_UNSAFE)==0 ); + assert( (pDef->funcFlags & SQLITE_FUNC_DIRECT)==0 ); + return exprCodeInlineFunction(pParse, pFarg, + SQLITE_PTR_TO_INT(pDef->pUserData), target); + }else if( pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE) ){ + sqlite3ExprFunctionUsable(pParse, pExpr, pDef); } - /* The UNLIKELY() function is a no-op. The result is the value - ** of the first argument. - */ - if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){ - assert( nFarg>=1 ); - return sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target); - } - -#ifdef SQLITE_DEBUG - /* The AFFINITY() function evaluates to a string that describes - ** the type affinity of the argument. This is used for testing of - ** the SQLite type logic. - */ - if( pDef->funcFlags & SQLITE_FUNC_AFFINITY ){ - const char *azAff[] = { "blob", "text", "numeric", "integer", "real" }; - char aff; - assert( nFarg==1 ); - aff = sqlite3ExprAffinity(pFarg->a[0].pExpr); - sqlite3VdbeLoadString(v, target, - aff ? azAff[aff-SQLITE_AFF_BLOB] : "none"); - return target; - } -#endif - for(i=0; ia[i].pExpr) ){ testcase( i==31 ); @@ -98612,10 +112051,10 @@ expr_code_doover: r1 = sqlite3GetTempRange(pParse, nFarg); } - /* For length() and typeof() functions with a column argument, + /* For length() and typeof() and octet_length() functions, ** set the P5 parameter to the OP_Column opcode to OPFLAG_LENGTHARG - ** or OPFLAG_TYPEOFARG respectively, to avoid unnecessary data - ** loading. + ** or OPFLAG_TYPEOFARG or OPFLAG_BYTELENARG respectively, to avoid + ** unnecessary data loading. */ if( (pDef->funcFlags & (SQLITE_FUNC_LENGTH|SQLITE_FUNC_TYPEOF))!=0 ){ u8 exprOp; @@ -98625,16 +112064,16 @@ expr_code_doover: if( exprOp==TK_COLUMN || exprOp==TK_AGG_COLUMN ){ assert( SQLITE_FUNC_LENGTH==OPFLAG_LENGTHARG ); assert( SQLITE_FUNC_TYPEOF==OPFLAG_TYPEOFARG ); - testcase( pDef->funcFlags & OPFLAG_LENGTHARG ); - pFarg->a[0].pExpr->op2 = - pDef->funcFlags & (OPFLAG_LENGTHARG|OPFLAG_TYPEOFARG); + assert( SQLITE_FUNC_BYTELEN==OPFLAG_BYTELENARG ); + assert( (OPFLAG_LENGTHARG|OPFLAG_TYPEOFARG)==OPFLAG_BYTELENARG ); + testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_LENGTHARG ); + testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_TYPEOFARG ); + testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_BYTELENARG); + pFarg->a[0].pExpr->op2 = pDef->funcFlags & OPFLAG_BYTELENARG; } } - sqlite3ExprCachePush(pParse); /* Ticket 2ea2425d34be */ - sqlite3ExprCodeExprList(pParse, pFarg, r1, 0, - SQLITE_ECEL_DUP|SQLITE_ECEL_FACTOR); - sqlite3ExprCachePop(pParse); /* Ticket 2ea2425d34be */ + sqlite3ExprCodeExprList(pParse, pFarg, r1, 0, SQLITE_ECEL_FACTOR); }else{ r1 = 0; } @@ -98647,37 +112086,28 @@ expr_code_doover: ** see if it is a column in a virtual table. This is done because ** the left operand of infix functions (the operand we want to ** control overloading) ends up as the second argument to the - ** function. The expression "A glob B" is equivalent to + ** function. The expression "A glob B" is equivalent to ** "glob(B,A). We want to use the A in "A glob B" to test ** for function overloading. But we use the B term in "glob(B,A)". */ - if( nFarg>=2 && (pExpr->flags & EP_InfixFunc) ){ + if( nFarg>=2 && ExprHasProperty(pExpr, EP_InfixFunc) ){ pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[1].pExpr); }else if( nFarg>0 ){ pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[0].pExpr); } #endif if( pDef->funcFlags & SQLITE_FUNC_NEEDCOLL ){ - if( !pColl ) pColl = db->pDfltColl; + if( !pColl ) pColl = db->pDfltColl; sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ); } -#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC - if( pDef->funcFlags & SQLITE_FUNC_OFFSET ){ - Expr *pArg = pFarg->a[0].pExpr; - if( pArg->op==TK_COLUMN ){ - sqlite3VdbeAddOp3(v, OP_Offset, pArg->iTable, pArg->iColumn, target); + sqlite3VdbeAddFunctionCall(pParse, constMask, r1, target, nFarg, + pDef, pExpr->op2); + if( nFarg ){ + if( constMask==0 ){ + sqlite3ReleaseTempRange(pParse, r1, nFarg); }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, target); + sqlite3VdbeReleaseRegisters(pParse, r1, nFarg, constMask, 1); } - }else -#endif - { - sqlite3VdbeAddOp4(v, pParse->iSelfTab ? OP_PureFunc0 : OP_Function0, - constMask, r1, target, (char*)pDef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, (u8)nFarg); - } - if( nFarg && constMask==0 ){ - sqlite3ReleaseTempRange(pParse, r1, nFarg); } return target; } @@ -98687,30 +112117,36 @@ expr_code_doover: int nCol; testcase( op==TK_EXISTS ); testcase( op==TK_SELECT ); - if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){ + if( pParse->db->mallocFailed ){ + return 0; + }else if( op==TK_SELECT + && ALWAYS( ExprUseXSelect(pExpr) ) + && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 + ){ sqlite3SubselectError(pParse, nCol, 1); }else{ - return sqlite3CodeSubselect(pParse, pExpr, 0, 0); + return sqlite3CodeSubselect(pParse, pExpr); } break; } case TK_SELECT_COLUMN: { int n; - if( pExpr->pLeft->iTable==0 ){ - pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft, 0, 0); + Expr *pLeft = pExpr->pLeft; + if( pLeft->iTable==0 || pParse->withinRJSubrtn > pLeft->op2 ){ + pLeft->iTable = sqlite3CodeSubselect(pParse, pLeft); + pLeft->op2 = pParse->withinRJSubrtn; } - assert( pExpr->iTable==0 || pExpr->pLeft->op==TK_SELECT ); - if( pExpr->iTable - && pExpr->iTable!=(n = sqlite3ExprVectorSize(pExpr->pLeft)) - ){ + assert( pLeft->op==TK_SELECT || pLeft->op==TK_ERROR ); + n = sqlite3ExprVectorSize(pLeft); + if( pExpr->iTable!=n ){ sqlite3ErrorMsg(pParse, "%d columns assigned %d values", pExpr->iTable, n); } - return pExpr->pLeft->iTable + pExpr->iColumn; + return pLeft->iTable + pExpr->iColumn; } case TK_IN: { - int destIfFalse = sqlite3VdbeMakeLabel(v); - int destIfNull = sqlite3VdbeMakeLabel(v); + int destIfFalse = sqlite3VdbeMakeLabel(pParse); + int destIfNull = sqlite3VdbeMakeLabel(pParse); sqlite3VdbeAddOp2(v, OP_Null, 0, target); sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); sqlite3VdbeAddOp2(v, OP_Integer, 1, target); @@ -98737,8 +112173,23 @@ expr_code_doover: exprCodeBetween(pParse, pExpr, target, 0, 0); return target; } + case TK_COLLATE: { + if( !ExprHasProperty(pExpr, EP_Collate) ){ + /* A TK_COLLATE Expr node without the EP_Collate tag is a so-called + ** "SOFT-COLLATE" that is added to constraints that are pushed down + ** from outer queries into sub-queries by the push-down optimization. + ** Clear subtypes as subtypes may not cross a subquery boundary. + */ + assert( pExpr->pLeft ); + sqlite3ExprCode(pParse, pExpr->pLeft, target); + sqlite3VdbeAddOp1(v, OP_ClrSubtype, target); + return target; + }else{ + pExpr = pExpr->pLeft; + goto expr_code_doover; /* 2018-04-28: Prevent deep recursion. */ + } + } case TK_SPAN: - case TK_COLLATE: case TK_UPLUS: { pExpr = pExpr->pLeft; goto expr_code_doover; /* 2018-04-28: Prevent deep recursion. OSSFuzz. */ @@ -98754,7 +112205,7 @@ expr_code_doover: ** ** The expression is implemented using an OP_Param opcode. The p1 ** parameter is set to 0 for an old.rowid reference, or to (i+1) - ** to reference another column of the old.* pseudo-table, where + ** to reference another column of the old.* pseudo-table, where ** i is the index of the column. For a new.rowid reference, p1 is ** set to (n+1), where n is the number of columns in each pseudo-table. ** For a reference to any other column in the new.* pseudo-table, p1 @@ -98768,20 +112219,27 @@ expr_code_doover: ** ** p1==0 -> old.rowid p1==3 -> new.rowid ** p1==1 -> old.a p1==4 -> new.a - ** p1==2 -> old.b p1==5 -> new.b + ** p1==2 -> old.b p1==5 -> new.b */ - Table *pTab = pExpr->pTab; - int p1 = pExpr->iTable * (pTab->nCol+1) + 1 + pExpr->iColumn; + Table *pTab; + int iCol; + int p1; + + assert( ExprUseYTab(pExpr) ); + pTab = pExpr->y.pTab; + iCol = pExpr->iColumn; + p1 = pExpr->iTable * (pTab->nCol+1) + 1 + + sqlite3TableColumnToStorage(pTab, iCol); assert( pExpr->iTable==0 || pExpr->iTable==1 ); - assert( pExpr->iColumn>=-1 && pExpr->iColumnnCol ); - assert( pTab->iPKey<0 || pExpr->iColumn!=pTab->iPKey ); + assert( iCol>=-1 && iColnCol ); + assert( pTab->iPKey<0 || iCol!=pTab->iPKey ); assert( p1>=0 && p1<(pTab->nCol*2+2) ); sqlite3VdbeAddOp2(v, OP_Param, p1, target); VdbeComment((v, "r[%d]=%s.%s", target, (pExpr->iTable ? "new" : "old"), - (pExpr->iColumn<0 ? "rowid" : pExpr->pTab->aCol[pExpr->iColumn].zName) + (pExpr->iColumn<0 ? "rowid" : pExpr->y.pTab->aCol[iCol].zCnName) )); #ifndef SQLITE_OMIT_FLOATING_POINT @@ -98790,9 +112248,7 @@ expr_code_doover: ** ** EVIDENCE-OF: R-60985-57662 SQLite will convert the value back to ** floating point when extracting it from the record. */ - if( pExpr->iColumn>=0 - && pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL - ){ + if( iCol>=0 && pTab->aCol[iCol].affinity==SQLITE_AFF_REAL ){ sqlite3VdbeAddOp1(v, OP_RealAffinity, target); } #endif @@ -98804,14 +112260,43 @@ expr_code_doover: break; } + /* TK_IF_NULL_ROW Expr nodes are inserted ahead of expressions + ** that derive from the right-hand table of a LEFT JOIN. The + ** Expr.iTable value is the table number for the right-hand table. + ** The expression is only evaluated if that table is not currently + ** on a LEFT JOIN NULL row. + */ case TK_IF_NULL_ROW: { int addrINR; - addrINR = sqlite3VdbeAddOp1(v, OP_IfNullRow, pExpr->iTable); - sqlite3ExprCachePush(pParse); - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - sqlite3ExprCachePop(pParse); + u8 okConstFactor = pParse->okConstFactor; + AggInfo *pAggInfo = pExpr->pAggInfo; + if( pAggInfo ){ + assert( pExpr->iAgg>=0 && pExpr->iAggnColumn ); + if( !pAggInfo->directMode ){ + inReg = AggInfoColumnReg(pAggInfo, pExpr->iAgg); + break; + } + if( pExpr->pAggInfo->useSortingIdx ){ + sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab, + pAggInfo->aCol[pExpr->iAgg].iSorterColumn, + target); + inReg = target; + break; + } + } + addrINR = sqlite3VdbeAddOp3(v, OP_IfNullRow, pExpr->iTable, 0, target); + /* The OP_IfNullRow opcode above can overwrite the result register with + ** NULL. So we have to ensure that the result register is not a value + ** that is suppose to be a constant. Two defenses are needed: + ** (1) Temporarily disable factoring of constant expressions + ** (2) Make sure the computed value really is stored in register + ** "target" and not someplace else. + */ + pParse->okConstFactor = 0; /* note (1) above */ + sqlite3ExprCode(pParse, pExpr->pLeft, target); + assert( target==inReg ); + pParse->okConstFactor = okConstFactor; sqlite3VdbeJumpHere(v, addrINR); - sqlite3VdbeChangeP3(v, addrINR, inReg); break; } @@ -98836,7 +112321,7 @@ expr_code_doover: ** or if there is no matching Ei, the ELSE term Y, or if there is ** no ELSE term, NULL. */ - default: assert( op==TK_CASE ); { + case TK_CASE: { int endLabel; /* GOTO label for end of CASE stmt */ int nextCase; /* GOTO label for next WHEN clause */ int nExpr; /* 2x number of WHEN terms */ @@ -98846,22 +112331,27 @@ expr_code_doover: Expr opCompare; /* The X==Ei expression */ Expr *pX; /* The X expression */ Expr *pTest = 0; /* X==Ei (form A) or just Ei (form B) */ - VVA_ONLY( int iCacheLevel = pParse->iCacheLevel; ) + Expr *pDel = 0; + sqlite3 *db = pParse->db; - assert( !ExprHasProperty(pExpr, EP_xIsSelect) && pExpr->x.pList ); + assert( ExprUseXList(pExpr) && pExpr->x.pList!=0 ); assert(pExpr->x.pList->nExpr > 0); pEList = pExpr->x.pList; aListelem = pEList->a; nExpr = pEList->nExpr; - endLabel = sqlite3VdbeMakeLabel(v); + endLabel = sqlite3VdbeMakeLabel(pParse); if( (pX = pExpr->pLeft)!=0 ){ - tempX = *pX; + pDel = sqlite3ExprDup(db, pX, 0); + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pDel); + break; + } testcase( pX->op==TK_COLUMN ); - exprToRegister(&tempX, exprCodeVector(pParse, &tempX, ®Free1)); + exprToRegister(pDel, exprCodeVector(pParse, pDel, ®Free1)); testcase( regFree1==0 ); memset(&opCompare, 0, sizeof(opCompare)); opCompare.op = TK_EQ; - opCompare.pLeft = &tempX; + opCompare.pLeft = pDel; pTest = &opCompare; /* Ticket b351d95f9cd5ef17e9d9dbae18f5ca8611190001: ** The value in regFree1 might get SCopy-ed into the file result. @@ -98870,57 +112360,54 @@ expr_code_doover: regFree1 = 0; } for(i=0; iop==TK_COLUMN ); sqlite3ExprIfFalse(pParse, pTest, nextCase, SQLITE_JUMPIFNULL); testcase( aListelem[i+1].pExpr->op==TK_COLUMN ); sqlite3ExprCode(pParse, aListelem[i+1].pExpr, target); sqlite3VdbeGoto(v, endLabel); - sqlite3ExprCachePop(pParse); sqlite3VdbeResolveLabel(v, nextCase); } if( (nExpr&1)!=0 ){ - sqlite3ExprCachePush(pParse); sqlite3ExprCode(pParse, pEList->a[nExpr-1].pExpr, target); - sqlite3ExprCachePop(pParse); }else{ sqlite3VdbeAddOp2(v, OP_Null, 0, target); } - assert( pParse->db->mallocFailed || pParse->nErr>0 - || pParse->iCacheLevel==iCacheLevel ); + sqlite3ExprDelete(db, pDel); + setDoNotMergeFlagOnCopy(v); sqlite3VdbeResolveLabel(v, endLabel); break; } #ifndef SQLITE_OMIT_TRIGGER case TK_RAISE: { - assert( pExpr->affinity==OE_Rollback - || pExpr->affinity==OE_Abort - || pExpr->affinity==OE_Fail - || pExpr->affinity==OE_Ignore + assert( pExpr->affExpr==OE_Rollback + || pExpr->affExpr==OE_Abort + || pExpr->affExpr==OE_Fail + || pExpr->affExpr==OE_Ignore ); - if( !pParse->pTriggerTab ){ + if( !pParse->pTriggerTab && !pParse->nested ){ sqlite3ErrorMsg(pParse, "RAISE() may only be used within a trigger-program"); return 0; } - if( pExpr->affinity==OE_Abort ){ + if( pExpr->affExpr==OE_Abort ){ sqlite3MayAbort(pParse); } assert( !ExprHasProperty(pExpr, EP_IntValue) ); - if( pExpr->affinity==OE_Ignore ){ + if( pExpr->affExpr==OE_Ignore ){ sqlite3VdbeAddOp4( v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0); VdbeCoverage(v); }else{ - sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_TRIGGER, - pExpr->affinity, pExpr->u.zToken, 0, 0); + sqlite3HaltConstraint(pParse, + pParse->pTriggerTab ? SQLITE_CONSTRAINT_TRIGGER : SQLITE_ERROR, + pExpr->affExpr, pExpr->u.zToken, 0, 0); } break; @@ -98933,15 +112420,23 @@ expr_code_doover: } /* -** Factor out the code of the given expression to initialization time. +** Generate code that will evaluate expression pExpr just one time +** per prepared statement execution. +** +** If the expression uses functions (that might throw an exception) then +** guard them with an OP_Once opcode to ensure that the code is only executed +** once. If no functions are involved, then factor the code out and put it at +** the end of the prepared statement in the initialization section. ** ** If regDest>=0 then the result is always stored in that register and the -** result is not reusable. If regDest<0 then this routine is free to -** store the value whereever it wants. The register where the expression -** is stored is returned. When regDest<0, two identical expressions will -** code to the same register. +** result is not reusable. If regDest<0 then this routine is free to +** store the value wherever it wants. The register where the expression +** is stored is returned. When regDest<0, two identical expressions might +** code to the same register, if they do not contain function calls and hence +** are factored out into the initialization section at the end of the +** prepared statement. */ -SQLITE_PRIVATE int sqlite3ExprCodeAtInit( +SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce( Parse *pParse, /* Parsing context */ Expr *pExpr, /* The expression to code when the VDBE initializes */ int regDest /* Store the value in this register */ @@ -98953,20 +112448,37 @@ SQLITE_PRIVATE int sqlite3ExprCodeAtInit( struct ExprList_item *pItem; int i; for(pItem=p->a, i=p->nExpr; i>0; pItem++, i--){ - if( pItem->reusable && sqlite3ExprCompare(0,pItem->pExpr,pExpr,-1)==0 ){ + if( pItem->fg.reusable + && sqlite3ExprCompare(0,pItem->pExpr,pExpr,-1)==0 + ){ return pItem->u.iConstExprReg; } } } pExpr = sqlite3ExprDup(pParse->db, pExpr, 0); - p = sqlite3ExprListAppend(pParse, p, pExpr); - if( p ){ - struct ExprList_item *pItem = &p->a[p->nExpr-1]; - pItem->reusable = regDest<0; - if( regDest<0 ) regDest = ++pParse->nMem; - pItem->u.iConstExprReg = regDest; + if( pExpr!=0 && ExprHasProperty(pExpr, EP_HasFunc) ){ + Vdbe *v = pParse->pVdbe; + int addr; + assert( v ); + addr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + pParse->okConstFactor = 0; + if( !pParse->db->mallocFailed ){ + if( regDest<0 ) regDest = ++pParse->nMem; + sqlite3ExprCode(pParse, pExpr, regDest); + } + pParse->okConstFactor = 1; + sqlite3ExprDelete(pParse->db, pExpr); + sqlite3VdbeJumpHere(v, addr); + }else{ + p = sqlite3ExprListAppend(pParse, p, pExpr); + if( p ){ + struct ExprList_item *pItem = &p->a[p->nExpr-1]; + pItem->fg.reusable = regDest<0; + if( regDest<0 ) regDest = ++pParse->nMem; + pItem->u.iConstExprReg = regDest; + } + pParse->pConstExpr = p; } - pParse->pConstExpr = p; return regDest; } @@ -98985,13 +112497,14 @@ SQLITE_PRIVATE int sqlite3ExprCodeAtInit( */ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){ int r2; - pExpr = sqlite3ExprSkipCollate(pExpr); + pExpr = sqlite3ExprSkipCollateAndLikely(pExpr); if( ConstFactorOk(pParse) + && ALWAYS(pExpr!=0) && pExpr->op!=TK_REGISTER && sqlite3ExprIsConstantNotJoin(pExpr) ){ *pReg = 0; - r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1); + r2 = sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1); }else{ int r1 = sqlite3GetTempReg(pParse); r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1); @@ -99013,15 +112526,21 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){ SQLITE_PRIVATE void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ int inReg; + assert( pExpr==0 || !ExprHasVVAProperty(pExpr,EP_Immutable) ); assert( target>0 && target<=pParse->nMem ); - if( pExpr && pExpr->op==TK_REGISTER ){ - sqlite3VdbeAddOp2(pParse->pVdbe, OP_Copy, pExpr->iTable, target); - }else{ - inReg = sqlite3ExprCodeTarget(pParse, pExpr, target); - assert( pParse->pVdbe!=0 || pParse->db->mallocFailed ); - if( inReg!=target && pParse->pVdbe ){ - sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target); + assert( pParse->pVdbe!=0 || pParse->db->mallocFailed ); + if( pParse->pVdbe==0 ) return; + inReg = sqlite3ExprCodeTarget(pParse, pExpr, target); + if( inReg!=target ){ + u8 op; + if( ALWAYS(pExpr) + && (ExprHasProperty(pExpr,EP_Subquery) || pExpr->op==TK_REGISTER) + ){ + op = OP_Copy; + }else{ + op = OP_SCopy; } + sqlite3VdbeAddOp2(pParse->pVdbe, op, inReg, target); } } @@ -99044,37 +112563,13 @@ SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse *pParse, Expr *pExpr, int target){ ** might choose to code the expression at initialization time. */ SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse *pParse, Expr *pExpr, int target){ - if( pParse->okConstFactor && sqlite3ExprIsConstant(pExpr) ){ - sqlite3ExprCodeAtInit(pParse, pExpr, target); + if( pParse->okConstFactor && sqlite3ExprIsConstantNotJoin(pExpr) ){ + sqlite3ExprCodeRunJustOnce(pParse, pExpr, target); }else{ - sqlite3ExprCode(pParse, pExpr, target); + sqlite3ExprCodeCopy(pParse, pExpr, target); } } -/* -** Generate code that evaluates the given expression and puts the result -** in register target. -** -** Also make a copy of the expression results into another "cache" register -** and modify the expression so that the next time it is evaluated, -** the result is a copy of the cache register. -** -** This routine is used for expressions that are used multiple -** times. They are evaluated once and the results of the expression -** are reused. -*/ -SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){ - Vdbe *v = pParse->pVdbe; - int iMem; - - assert( target>0 ); - assert( pExpr->op!=TK_REGISTER ); - sqlite3ExprCode(pParse, pExpr, target); - iMem = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Copy, target, iMem); - exprToRegister(pExpr, iMem); -} - /* ** Generate code that pushes the value of every element of the given ** expression list into a sequence of registers beginning at target. @@ -99114,7 +112609,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList( for(pItem=pList->a, i=0; ipExpr; #ifdef SQLITE_ENABLE_SORTER_REFERENCES - if( pItem->bSorterRef ){ + if( pItem->fg.bSorterRef ){ i--; n--; }else @@ -99126,16 +112621,19 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList( }else{ sqlite3VdbeAddOp2(v, copyOp, j+srcReg-1, target+i); } - }else if( (flags & SQLITE_ECEL_FACTOR)!=0 && sqlite3ExprIsConstant(pExpr) ){ - sqlite3ExprCodeAtInit(pParse, pExpr, target+i); + }else if( (flags & SQLITE_ECEL_FACTOR)!=0 + && sqlite3ExprIsConstantNotJoin(pExpr) + ){ + sqlite3ExprCodeRunJustOnce(pParse, pExpr, target+i); }else{ int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i); if( inReg!=target+i ){ VdbeOp *pOp; if( copyOp==OP_Copy - && (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy + && (pOp=sqlite3VdbeGetLastOp(v))->opcode==OP_Copy && pOp->p1+pOp->p3+1==inReg && pOp->p2+pOp->p3+1==target+i + && pOp->p5==0 /* The do-not-merge flag must be clear */ ){ pOp->p3++; }else{ @@ -99152,7 +112650,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList( ** ** x BETWEEN y AND z ** -** The above is equivalent to +** The above is equivalent to ** ** x>=y AND x<=z ** @@ -99174,41 +112672,44 @@ static void exprCodeBetween( void (*xJump)(Parse*,Expr*,int,int), /* Action to take */ int jumpIfNull /* Take the jump if the BETWEEN is NULL */ ){ - Expr exprAnd; /* The AND operator in x>=y AND x<=z */ + Expr exprAnd; /* The AND operator in x>=y AND x<=z */ Expr compLeft; /* The x>=y term */ Expr compRight; /* The x<=z term */ - Expr exprX; /* The x subexpression */ int regFree1 = 0; /* Temporary use register */ - + Expr *pDel = 0; + sqlite3 *db = pParse->db; memset(&compLeft, 0, sizeof(Expr)); memset(&compRight, 0, sizeof(Expr)); memset(&exprAnd, 0, sizeof(Expr)); - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - exprX = *pExpr->pLeft; - exprAnd.op = TK_AND; - exprAnd.pLeft = &compLeft; - exprAnd.pRight = &compRight; - compLeft.op = TK_GE; - compLeft.pLeft = &exprX; - compLeft.pRight = pExpr->x.pList->a[0].pExpr; - compRight.op = TK_LE; - compRight.pLeft = &exprX; - compRight.pRight = pExpr->x.pList->a[1].pExpr; - exprToRegister(&exprX, exprCodeVector(pParse, &exprX, ®Free1)); - if( xJump ){ - xJump(pParse, &exprAnd, dest, jumpIfNull); - }else{ - /* Mark the expression is being from the ON or USING clause of a join - ** so that the sqlite3ExprCodeTarget() routine will not attempt to move - ** it into the Parse.pConstExpr list. We should use a new bit for this, - ** for clarity, but we are out of bits in the Expr.flags field so we - ** have to reuse the EP_FromJoin bit. Bummer. */ - exprX.flags |= EP_FromJoin; - sqlite3ExprCodeTarget(pParse, &exprAnd, dest); + assert( ExprUseXList(pExpr) ); + pDel = sqlite3ExprDup(db, pExpr->pLeft, 0); + if( db->mallocFailed==0 ){ + exprAnd.op = TK_AND; + exprAnd.pLeft = &compLeft; + exprAnd.pRight = &compRight; + compLeft.op = TK_GE; + compLeft.pLeft = pDel; + compLeft.pRight = pExpr->x.pList->a[0].pExpr; + compRight.op = TK_LE; + compRight.pLeft = pDel; + compRight.pRight = pExpr->x.pList->a[1].pExpr; + exprToRegister(pDel, exprCodeVector(pParse, pDel, ®Free1)); + if( xJump ){ + xJump(pParse, &exprAnd, dest, jumpIfNull); + }else{ + /* Mark the expression is being from the ON or USING clause of a join + ** so that the sqlite3ExprCodeTarget() routine will not attempt to move + ** it into the Parse.pConstExpr list. We should use a new bit for this, + ** for clarity, but we are out of bits in the Expr.flags field so we + ** have to reuse the EP_OuterON bit. Bummer. */ + pDel->flags |= EP_OuterON; + sqlite3ExprCodeTarget(pParse, &exprAnd, dest); + } + sqlite3ReleaseTempReg(pParse, regFree1); } - sqlite3ReleaseTempReg(pParse, regFree1); + sqlite3ExprDelete(db, pDel); /* Ensure adequate test coverage */ testcase( xJump==sqlite3ExprIfTrue && jumpIfNull==0 && regFree1==0 ); @@ -99246,24 +112747,26 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 ); if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */ if( NEVER(pExpr==0) ) return; /* No way this can happen */ + assert( !ExprHasVVAProperty(pExpr, EP_Immutable) ); op = pExpr->op; switch( op ){ - case TK_AND: { - int d2 = sqlite3VdbeMakeLabel(v); - testcase( jumpIfNull==0 ); - sqlite3ExprIfFalse(pParse, pExpr->pLeft, d2,jumpIfNull^SQLITE_JUMPIFNULL); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse); - break; - } + case TK_AND: case TK_OR: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3ExprCachePop(pParse); + Expr *pAlt = sqlite3ExprSimplifiedAndOr(pExpr); + if( pAlt!=pExpr ){ + sqlite3ExprIfTrue(pParse, pAlt, dest, jumpIfNull); + }else if( op==TK_AND ){ + int d2 = sqlite3VdbeMakeLabel(pParse); + testcase( jumpIfNull==0 ); + sqlite3ExprIfFalse(pParse, pExpr->pLeft, d2, + jumpIfNull^SQLITE_JUMPIFNULL); + sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); + sqlite3VdbeResolveLabel(v, d2); + }else{ + testcase( jumpIfNull==0 ); + sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); + sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); + } break; } case TK_NOT: { @@ -99294,7 +112797,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int testcase( op==TK_ISNOT ); op = (op==TK_IS) ? TK_EQ : TK_NE; jumpIfNull = SQLITE_NULLEQ; - /* Fall thru */ + /* no break */ deliberate_fall_through case TK_LT: case TK_LE: case TK_GT: @@ -99306,7 +112809,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, jumpIfNull); + r1, r2, dest, jumpIfNull, ExprHasProperty(pExpr,EP_Commuted)); assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); @@ -99326,6 +112829,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int assert( TK_ISNULL==OP_IsNull ); testcase( op==TK_ISNULL ); assert( TK_NOTNULL==OP_NotNull ); testcase( op==TK_NOTNULL ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); + sqlite3VdbeTypeofColumn(v, r1); sqlite3VdbeAddOp2(v, op, r1, dest); VdbeCoverageIf(v, op==TK_ISNULL); VdbeCoverageIf(v, op==TK_NOTNULL); @@ -99339,7 +112843,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int } #ifndef SQLITE_OMIT_SUBQUERY case TK_IN: { - int destIfFalse = sqlite3VdbeMakeLabel(v); + int destIfFalse = sqlite3VdbeMakeLabel(pParse); int destIfNull = jumpIfNull ? dest : destIfFalse; sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); sqlite3VdbeGoto(v, dest); @@ -99349,9 +112853,9 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int #endif default: { default_expr: - if( exprAlwaysTrue(pExpr) ){ + if( ExprAlwaysTrue(pExpr) ){ sqlite3VdbeGoto(v, dest); - }else if( exprAlwaysFalse(pExpr) ){ + }else if( ExprAlwaysFalse(pExpr) ){ /* No-op */ }else{ r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); @@ -99364,7 +112868,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int } } sqlite3ReleaseTempReg(pParse, regFree1); - sqlite3ReleaseTempReg(pParse, regFree2); + sqlite3ReleaseTempReg(pParse, regFree2); } /* @@ -99386,6 +112890,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 ); if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */ if( pExpr==0 ) return; + assert( !ExprHasVVAProperty(pExpr,EP_Immutable) ); /* The value of pExpr->op and op are related as follows: ** @@ -99419,22 +112924,23 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int assert( pExpr->op!=TK_GE || op==OP_Lt ); switch( pExpr->op ){ - case TK_AND: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3ExprCachePop(pParse); - break; - } + case TK_AND: case TK_OR: { - int d2 = sqlite3VdbeMakeLabel(v); - testcase( jumpIfNull==0 ); - sqlite3ExprIfTrue(pParse, pExpr->pLeft, d2, jumpIfNull^SQLITE_JUMPIFNULL); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse); + Expr *pAlt = sqlite3ExprSimplifiedAndOr(pExpr); + if( pAlt!=pExpr ){ + sqlite3ExprIfFalse(pParse, pAlt, dest, jumpIfNull); + }else if( pExpr->op==TK_AND ){ + testcase( jumpIfNull==0 ); + sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); + sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); + }else{ + int d2 = sqlite3VdbeMakeLabel(pParse); + testcase( jumpIfNull==0 ); + sqlite3ExprIfTrue(pParse, pExpr->pLeft, d2, + jumpIfNull^SQLITE_JUMPIFNULL); + sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); + sqlite3VdbeResolveLabel(v, d2); + } break; } case TK_NOT: { @@ -99468,7 +112974,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int testcase( pExpr->op==TK_ISNOT ); op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ; jumpIfNull = SQLITE_NULLEQ; - /* Fall thru */ + /* no break */ deliberate_fall_through case TK_LT: case TK_LE: case TK_GT: @@ -99480,7 +112986,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, jumpIfNull); + r1, r2, dest, jumpIfNull,ExprHasProperty(pExpr,EP_Commuted)); assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); @@ -99498,6 +113004,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int case TK_ISNULL: case TK_NOTNULL: { r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); + sqlite3VdbeTypeofColumn(v, r1); sqlite3VdbeAddOp2(v, op, r1, dest); testcase( op==TK_ISNULL ); VdbeCoverageIf(v, op==TK_ISNULL); testcase( op==TK_NOTNULL ); VdbeCoverageIf(v, op==TK_NOTNULL); @@ -99514,7 +113021,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int if( jumpIfNull ){ sqlite3ExprCodeIN(pParse, pExpr, dest, dest); }else{ - int destIfNull = sqlite3VdbeMakeLabel(v); + int destIfNull = sqlite3VdbeMakeLabel(pParse); sqlite3ExprCodeIN(pParse, pExpr, dest, destIfNull); sqlite3VdbeResolveLabel(v, destIfNull); } @@ -99522,10 +113029,10 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int } #endif default: { - default_expr: - if( exprAlwaysFalse(pExpr) ){ + default_expr: + if( ExprAlwaysFalse(pExpr) ){ sqlite3VdbeGoto(v, dest); - }else if( exprAlwaysTrue(pExpr) ){ + }else if( ExprAlwaysTrue(pExpr) ){ /* no-op */ }else{ r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); @@ -99568,11 +113075,15 @@ SQLITE_PRIVATE void sqlite3ExprIfFalseDup(Parse *pParse, Expr *pExpr, int dest,i ** Otherwise, if the values are not the same or if pExpr is not a simple ** SQL value, zero is returned. */ -static int exprCompareVariable(Parse *pParse, Expr *pVar, Expr *pExpr){ +static int exprCompareVariable( + const Parse *pParse, + const Expr *pVar, + const Expr *pExpr +){ int res = 0; int iVar; sqlite3_value *pL, *pR = 0; - + sqlite3ValueFromExpr(pParse->db, pExpr, SQLITE_UTF8, SQLITE_AFF_BLOB, &pR); if( pR ){ iVar = pVar->iColumn; @@ -99614,13 +113125,18 @@ static int exprCompareVariable(Parse *pParse, Expr *pVar, Expr *pExpr){ ** an incorrect 0 or 1 could lead to a malfunction. ** ** If pParse is not NULL then TK_VARIABLE terms in pA with bindings in -** pParse->pReprepare can be matched against literals in pB. The +** pParse->pReprepare can be matched against literals in pB. The ** pParse->pVdbe->expmask bitmask is updated for each variable referenced. -** If pParse is NULL (the normal case) then any TK_VARIABLE term in +** If pParse is NULL (the normal case) then any TK_VARIABLE term in ** Argument pParse should normally be NULL. If it is not NULL and pA or ** pB causes a return value of 2. */ -SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTab){ +SQLITE_PRIVATE int sqlite3ExprCompare( + const Parse *pParse, + const Expr *pA, + const Expr *pB, + int iTab +){ u32 combinedFlags; if( pA==0 || pB==0 ){ return pB==pA ? 0 : 2; @@ -99635,43 +113151,76 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa } return 2; } - if( pA->op!=pB->op ){ + if( pA->op!=pB->op || pA->op==TK_RAISE ){ if( pA->op==TK_COLLATE && sqlite3ExprCompare(pParse, pA->pLeft,pB,iTab)<2 ){ return 1; } if( pB->op==TK_COLLATE && sqlite3ExprCompare(pParse, pA,pB->pLeft,iTab)<2 ){ return 1; } - return 2; - } - if( pA->op!=TK_COLUMN && pA->op!=TK_AGG_COLUMN && pA->u.zToken ){ - if( pA->op==TK_FUNCTION ){ - if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; - }else if( pA->op==TK_COLLATE ){ - if( sqlite3_stricmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; - }else if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ + if( pA->op==TK_AGG_COLUMN && pB->op==TK_COLUMN + && pB->iTable<0 && pA->iTable==iTab + ){ + /* fall through */ + }else{ return 2; } } - if( (pA->flags & EP_Distinct)!=(pB->flags & EP_Distinct) ) return 2; + assert( !ExprHasProperty(pA, EP_IntValue) ); + assert( !ExprHasProperty(pB, EP_IntValue) ); + if( pA->u.zToken ){ + if( pA->op==TK_FUNCTION || pA->op==TK_AGG_FUNCTION ){ + if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; +#ifndef SQLITE_OMIT_WINDOWFUNC + assert( pA->op==pB->op ); + if( ExprHasProperty(pA,EP_WinFunc)!=ExprHasProperty(pB,EP_WinFunc) ){ + return 2; + } + if( ExprHasProperty(pA,EP_WinFunc) ){ + if( sqlite3WindowCompare(pParse, pA->y.pWin, pB->y.pWin, 1)!=0 ){ + return 2; + } + } +#endif + }else if( pA->op==TK_NULL ){ + return 0; + }else if( pA->op==TK_COLLATE ){ + if( sqlite3_stricmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; + }else + if( pB->u.zToken!=0 + && pA->op!=TK_COLUMN + && pA->op!=TK_AGG_COLUMN + && strcmp(pA->u.zToken,pB->u.zToken)!=0 + ){ + return 2; + } + } + if( (pA->flags & (EP_Distinct|EP_Commuted)) + != (pB->flags & (EP_Distinct|EP_Commuted)) ) return 2; if( ALWAYS((combinedFlags & EP_TokenOnly)==0) ){ if( combinedFlags & EP_xIsSelect ) return 2; - if( sqlite3ExprCompare(pParse, pA->pLeft, pB->pLeft, iTab) ) return 2; + if( (combinedFlags & EP_FixedCol)==0 + && sqlite3ExprCompare(pParse, pA->pLeft, pB->pLeft, iTab) ) return 2; if( sqlite3ExprCompare(pParse, pA->pRight, pB->pRight, iTab) ) return 2; if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2; - assert( (combinedFlags & EP_Reduced)==0 ); - if( pA->op!=TK_STRING && pA->op!=TK_TRUEFALSE ){ + if( pA->op!=TK_STRING + && pA->op!=TK_TRUEFALSE + && ALWAYS((combinedFlags & EP_Reduced)==0) + ){ if( pA->iColumn!=pB->iColumn ) return 2; - if( pA->iTable!=pB->iTable - && (pA->iTable!=iTab || NEVER(pB->iTable>=0)) ) return 2; + if( pA->op2!=pB->op2 && pA->op==TK_TRUTH ) return 2; + if( pA->op!=TK_IN && pA->iTable!=pB->iTable && pA->iTable!=iTab ){ + return 2; + } } } return 0; } /* -** Compare two ExprList objects. Return 0 if they are identical and -** non-zero if they differ in any way. +** Compare two ExprList objects. Return 0 if they are identical, 1 +** if they are certainly different, or 2 if it is not possible to +** determine if they are identical or not. ** ** If any subelement of pB has Expr.iTable==(-1) then it is allowed ** to compare equal to an equivalent element in pA with Expr.iTable==iTab. @@ -99684,16 +113233,17 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa ** Two NULL pointers are considered to be the same. But a NULL pointer ** always differs from a non-NULL pointer. */ -SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList *pA, ExprList *pB, int iTab){ +SQLITE_PRIVATE int sqlite3ExprListCompare(const ExprList *pA, const ExprList *pB, int iTab){ int i; if( pA==0 && pB==0 ) return 0; if( pA==0 || pB==0 ) return 1; if( pA->nExpr!=pB->nExpr ) return 1; for(i=0; inExpr; i++){ + int res; Expr *pExprA = pA->a[i].pExpr; Expr *pExprB = pB->a[i].pExpr; - if( pA->a[i].sortOrder!=pB->a[i].sortOrder ) return 1; - if( sqlite3ExprCompare(0, pExprA, pExprB, iTab) ) return 1; + if( pA->a[i].fg.sortFlags!=pB->a[i].fg.sortFlags ) return 1; + if( (res = sqlite3ExprCompare(0, pExprA, pExprB, iTab)) ) return res; } return 0; } @@ -99702,13 +113252,91 @@ SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList *pA, ExprList *pB, int iTab){ ** Like sqlite3ExprCompare() except COLLATE operators at the top-level ** are ignored. */ -SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr *pA, Expr *pB, int iTab){ +SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr *pA,Expr *pB, int iTab){ return sqlite3ExprCompare(0, - sqlite3ExprSkipCollate(pA), - sqlite3ExprSkipCollate(pB), + sqlite3ExprSkipCollateAndLikely(pA), + sqlite3ExprSkipCollateAndLikely(pB), iTab); } +/* +** Return non-zero if Expr p can only be true if pNN is not NULL. +** +** Or if seenNot is true, return non-zero if Expr p can only be +** non-NULL if pNN is not NULL +*/ +static int exprImpliesNotNull( + const Parse *pParse,/* Parsing context */ + const Expr *p, /* The expression to be checked */ + const Expr *pNN, /* The expression that is NOT NULL */ + int iTab, /* Table being evaluated */ + int seenNot /* Return true only if p can be any non-NULL value */ +){ + assert( p ); + assert( pNN ); + if( sqlite3ExprCompare(pParse, p, pNN, iTab)==0 ){ + return pNN->op!=TK_NULL; + } + switch( p->op ){ + case TK_IN: { + if( seenNot && ExprHasProperty(p, EP_xIsSelect) ) return 0; + assert( ExprUseXSelect(p) || (p->x.pList!=0 && p->x.pList->nExpr>0) ); + return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, 1); + } + case TK_BETWEEN: { + ExprList *pList; + assert( ExprUseXList(p) ); + pList = p->x.pList; + assert( pList!=0 ); + assert( pList->nExpr==2 ); + if( seenNot ) return 0; + if( exprImpliesNotNull(pParse, pList->a[0].pExpr, pNN, iTab, 1) + || exprImpliesNotNull(pParse, pList->a[1].pExpr, pNN, iTab, 1) + ){ + return 1; + } + return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, 1); + } + case TK_EQ: + case TK_NE: + case TK_LT: + case TK_LE: + case TK_GT: + case TK_GE: + case TK_PLUS: + case TK_MINUS: + case TK_BITOR: + case TK_LSHIFT: + case TK_RSHIFT: + case TK_CONCAT: + seenNot = 1; + /* no break */ deliberate_fall_through + case TK_STAR: + case TK_REM: + case TK_BITAND: + case TK_SLASH: { + if( exprImpliesNotNull(pParse, p->pRight, pNN, iTab, seenNot) ) return 1; + /* no break */ deliberate_fall_through + } + case TK_SPAN: + case TK_COLLATE: + case TK_UPLUS: + case TK_UMINUS: { + return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, seenNot); + } + case TK_TRUTH: { + if( seenNot ) return 0; + if( p->op2!=TK_IS ) return 0; + return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, 1); + } + case TK_BITNOT: + case TK_NOT: { + return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, 1); + } + } + return 0; +} + /* ** Return true if we can prove the pE2 will always be true if pE1 is ** true. Return false if we cannot complete the proof or if pE2 might @@ -99720,21 +113348,26 @@ SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr *pA, Expr *pB, int iTab){ ** pE1: x!=123 pE2: x IS NOT NULL Result: true ** pE1: x!=?1 pE2: x IS NOT NULL Result: true ** pE1: x IS NULL pE2: x IS NOT NULL Result: false -** pE1: x IS ?2 pE2: x IS NOT NULL Reuslt: false +** pE1: x IS ?2 pE2: x IS NOT NULL Result: false ** ** When comparing TK_COLUMN nodes between pE1 and pE2, if pE2 has ** Expr.iTable<0 then assume a table number given by iTab. ** -** If pParse is not NULL, then the values of bound variables in pE1 are +** If pParse is not NULL, then the values of bound variables in pE1 are ** compared against literal values in pE2 and pParse->pVdbe->expmask is -** modified to record which bound variables are referenced. If pParse +** modified to record which bound variables are referenced. If pParse ** is NULL, then false will be returned if pE1 contains any bound variables. ** ** When in doubt, return false. Returning true might give a performance ** improvement. Returning false might cause a performance reduction, but ** it will always give the correct answer and is hence always safe. */ -SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse *pParse, Expr *pE1, Expr *pE2, int iTab){ +SQLITE_PRIVATE int sqlite3ExprImpliesExpr( + const Parse *pParse, + const Expr *pE1, + const Expr *pE2, + int iTab +){ if( sqlite3ExprCompare(pParse, pE1, pE2, iTab)==0 ){ return 1; } @@ -99744,48 +113377,72 @@ SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse *pParse, Expr *pE1, Expr *pE2, i ){ return 1; } - if( pE2->op==TK_NOTNULL && pE1->op!=TK_ISNULL && pE1->op!=TK_IS ){ - Expr *pX = sqlite3ExprSkipCollate(pE1->pLeft); - testcase( pX!=pE1->pLeft ); - if( sqlite3ExprCompare(pParse, pX, pE2->pLeft, iTab)==0 ) return 1; + if( pE2->op==TK_NOTNULL + && exprImpliesNotNull(pParse, pE1, pE2->pLeft, iTab, 0) + ){ + return 1; } return 0; } +/* This is a helper function to impliesNotNullRow(). In this routine, +** set pWalker->eCode to one only if *both* of the input expressions +** separately have the implies-not-null-row property. +*/ +static void bothImplyNotNullRow(Walker *pWalker, Expr *pE1, Expr *pE2){ + if( pWalker->eCode==0 ){ + sqlite3WalkExpr(pWalker, pE1); + if( pWalker->eCode ){ + pWalker->eCode = 0; + sqlite3WalkExpr(pWalker, pE2); + } + } +} + /* -** This is the Expr node callback for sqlite3ExprImpliesNotNullRow(). +** This is the Expr node callback for sqlite3ExprImpliesNonNullRow(). ** If the expression node requires that the table at pWalker->iCur -** have a non-NULL column, then set pWalker->eCode to 1 and abort. +** have one or more non-NULL column, then set pWalker->eCode to 1 and abort. +** +** pWalker->mWFlags is non-zero if this inquiry is being undertaking on +** behalf of a RIGHT JOIN (or FULL JOIN). That makes a difference when +** evaluating terms in the ON clause of an inner join. +** +** This routine controls an optimization. False positives (setting +** pWalker->eCode to 1 when it should not be) are deadly, but false-negatives +** (never setting pWalker->eCode) is a harmless missed optimization. */ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){ - /* This routine is only called for WHERE clause expressions and so it - ** cannot have any TK_AGG_COLUMN entries because those are only found - ** in HAVING clauses. We can get a TK_AGG_FUNCTION in a WHERE clause, - ** but that is an illegal construct and the query will be rejected at - ** a later stage of processing, so the TK_AGG_FUNCTION case does not - ** need to be considered here. */ - assert( pExpr->op!=TK_AGG_COLUMN ); + testcase( pExpr->op==TK_AGG_COLUMN ); testcase( pExpr->op==TK_AGG_FUNCTION ); - - if( ExprHasProperty(pExpr, EP_FromJoin) ) return WRC_Prune; + if( ExprHasProperty(pExpr, EP_OuterON) ) return WRC_Prune; + if( ExprHasProperty(pExpr, EP_InnerON) && pWalker->mWFlags ){ + /* If iCur is used in an inner-join ON clause to the left of a + ** RIGHT JOIN, that does *not* mean that the table must be non-null. + ** But it is difficult to check for that condition precisely. + ** To keep things simple, any use of iCur from any inner-join is + ** ignored while attempting to simplify a RIGHT JOIN. */ + return WRC_Prune; + } switch( pExpr->op ){ case TK_ISNOT: - case TK_NOT: case TK_ISNULL: + case TK_NOTNULL: case TK_IS: - case TK_OR: - case TK_CASE: - case TK_IN: + case TK_VECTOR: case TK_FUNCTION: + case TK_TRUTH: + case TK_CASE: testcase( pExpr->op==TK_ISNOT ); - testcase( pExpr->op==TK_NOT ); testcase( pExpr->op==TK_ISNULL ); + testcase( pExpr->op==TK_NOTNULL ); testcase( pExpr->op==TK_IS ); - testcase( pExpr->op==TK_OR ); - testcase( pExpr->op==TK_CASE ); - testcase( pExpr->op==TK_IN ); + testcase( pExpr->op==TK_VECTOR ); testcase( pExpr->op==TK_FUNCTION ); + testcase( pExpr->op==TK_TRUTH ); + testcase( pExpr->op==TK_CASE ); return WRC_Prune; + case TK_COLUMN: if( pWalker->u.iCur==pExpr->iTable ){ pWalker->eCode = 1; @@ -99793,6 +113450,40 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){ } return WRC_Prune; + case TK_OR: + case TK_AND: + /* Both sides of an AND or OR must separately imply non-null-row. + ** Consider these cases: + ** 1. NOT (x AND y) + ** 2. x OR y + ** If only one of x or y is non-null-row, then the overall expression + ** can be true if the other arm is false (case 1) or true (case 2). + */ + testcase( pExpr->op==TK_OR ); + testcase( pExpr->op==TK_AND ); + bothImplyNotNullRow(pWalker, pExpr->pLeft, pExpr->pRight); + return WRC_Prune; + + case TK_IN: + /* Beware of "x NOT IN ()" and "x NOT IN (SELECT 1 WHERE false)", + ** both of which can be true. But apart from these cases, if + ** the left-hand side of the IN is NULL then the IN itself will be + ** NULL. */ + if( ExprUseXList(pExpr) && ALWAYS(pExpr->x.pList->nExpr>0) ){ + sqlite3WalkExpr(pWalker, pExpr->pLeft); + } + return WRC_Prune; + + case TK_BETWEEN: + /* In "x NOT BETWEEN y AND z" either x must be non-null-row or else + ** both y and z must be non-null row */ + assert( ExprUseXList(pExpr) ); + assert( pExpr->x.pList->nExpr==2 ); + sqlite3WalkExpr(pWalker, pExpr->pLeft); + bothImplyNotNullRow(pWalker, pExpr->x.pList->a[0].pExpr, + pExpr->x.pList->a[1].pExpr); + return WRC_Prune; + /* Virtual tables are allowed to use constraints like x=NULL. So ** a term of the form x=y does not prove that y is not null if x ** is the column of a virtual table */ @@ -99801,18 +113492,30 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){ case TK_LT: case TK_LE: case TK_GT: - case TK_GE: + case TK_GE: { + Expr *pLeft = pExpr->pLeft; + Expr *pRight = pExpr->pRight; testcase( pExpr->op==TK_EQ ); testcase( pExpr->op==TK_NE ); testcase( pExpr->op==TK_LT ); testcase( pExpr->op==TK_LE ); testcase( pExpr->op==TK_GT ); testcase( pExpr->op==TK_GE ); - if( (pExpr->pLeft->op==TK_COLUMN && IsVirtual(pExpr->pLeft->pTab)) - || (pExpr->pRight->op==TK_COLUMN && IsVirtual(pExpr->pRight->pTab)) + /* The y.pTab=0 assignment in wherecode.c always happens after the + ** impliesNotNullRow() test */ + assert( pLeft->op!=TK_COLUMN || ExprUseYTab(pLeft) ); + assert( pRight->op!=TK_COLUMN || ExprUseYTab(pRight) ); + if( (pLeft->op==TK_COLUMN + && ALWAYS(pLeft->y.pTab!=0) + && IsVirtual(pLeft->y.pTab)) + || (pRight->op==TK_COLUMN + && ALWAYS(pRight->y.pTab!=0) + && IsVirtual(pRight->y.pTab)) ){ - return WRC_Prune; + return WRC_Prune; } + /* no break */ deliberate_fall_through + } default: return WRC_Continue; } @@ -99831,8 +113534,8 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){ ** False positives are not allowed, however. A false positive may result ** in an incorrect answer. ** -** Terms of p that are marked with EP_FromJoin (and hence that come from -** the ON or USING clauses of LEFT JOINS) are excluded from the analysis. +** Terms of p that are marked with EP_OuterON (and hence that come from +** the ON or USING clauses of OUTER JOINS) are excluded from the analysis. ** ** This routine is used to check if a LEFT JOIN can be converted into ** an ordinary JOIN. The p argument is the WHERE clause. If the WHERE @@ -99840,12 +113543,23 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){ ** be non-NULL, then the LEFT JOIN can be safely converted into an ** ordinary join. */ -SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr *p, int iTab){ +SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr *p, int iTab, int isRJ){ Walker w; + p = sqlite3ExprSkipCollateAndLikely(p); + if( p==0 ) return 0; + if( p->op==TK_NOTNULL ){ + p = p->pLeft; + }else{ + while( p->op==TK_AND ){ + if( sqlite3ExprImpliesNonNullRow(p->pLeft, iTab, isRJ) ) return 1; + p = p->pRight; + } + } w.xExprCallback = impliesNotNullRow; w.xSelectCallback = 0; w.xSelectCallback2 = 0; w.eCode = 0; + w.mWFlags = isRJ!=0; w.u.iCur = iTab; sqlite3WalkExpr(&w, p); return w.eCode; @@ -99864,14 +113578,14 @@ struct IdxCover { }; /* -** Check to see if there are references to columns in table +** Check to see if there are references to columns in table ** pWalker->u.pIdxCover->iCur can be satisfied using the index ** pWalker->u.pIdxCover->pIdx. */ static int exprIdxCover(Walker *pWalker, Expr *pExpr){ if( pExpr->op==TK_COLUMN && pExpr->iTable==pWalker->u.pIdxCover->iCur - && sqlite3ColumnOfIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0 + && sqlite3TableColumnToIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0 ){ pWalker->eCode = 1; return WRC_Abort; @@ -99906,62 +113620,183 @@ SQLITE_PRIVATE int sqlite3ExprCoveredByIndex( } -/* -** An instance of the following structure is used by the tree walker -** to count references to table columns in the arguments of an -** aggregate function, in order to implement the -** sqlite3FunctionThisSrc() routine. +/* Structure used to pass information throughout the Walker in order to +** implement sqlite3ReferencesSrcList(). */ -struct SrcCount { - SrcList *pSrc; /* One particular FROM clause in a nested query */ - int nThis; /* Number of references to columns in pSrcList */ - int nOther; /* Number of references to columns in other FROM clauses */ +struct RefSrcList { + sqlite3 *db; /* Database connection used for sqlite3DbRealloc() */ + SrcList *pRef; /* Looking for references to these tables */ + i64 nExclude; /* Number of tables to exclude from the search */ + int *aiExclude; /* Cursor IDs for tables to exclude from the search */ }; /* -** Count the number of references to columns. +** Walker SELECT callbacks for sqlite3ReferencesSrcList(). +** +** When entering a new subquery on the pExpr argument, add all FROM clause +** entries for that subquery to the exclude list. +** +** When leaving the subquery, remove those entries from the exclude list. */ -static int exprSrcCount(Walker *pWalker, Expr *pExpr){ - /* The NEVER() on the second term is because sqlite3FunctionUsesThisSrc() - ** is always called before sqlite3ExprAnalyzeAggregates() and so the - ** TK_COLUMNs have not yet been converted into TK_AGG_COLUMN. If - ** sqlite3FunctionUsesThisSrc() is used differently in the future, the - ** NEVER() will need to be removed. */ - if( pExpr->op==TK_COLUMN || NEVER(pExpr->op==TK_AGG_COLUMN) ){ +static int selectRefEnter(Walker *pWalker, Select *pSelect){ + struct RefSrcList *p = pWalker->u.pRefSrcList; + SrcList *pSrc = pSelect->pSrc; + i64 i, j; + int *piNew; + if( pSrc->nSrc==0 ) return WRC_Continue; + j = p->nExclude; + p->nExclude += pSrc->nSrc; + piNew = sqlite3DbRealloc(p->db, p->aiExclude, p->nExclude*sizeof(int)); + if( piNew==0 ){ + p->nExclude = 0; + return WRC_Abort; + }else{ + p->aiExclude = piNew; + } + for(i=0; inSrc; i++, j++){ + p->aiExclude[j] = pSrc->a[i].iCursor; + } + return WRC_Continue; +} +static void selectRefLeave(Walker *pWalker, Select *pSelect){ + struct RefSrcList *p = pWalker->u.pRefSrcList; + SrcList *pSrc = pSelect->pSrc; + if( p->nExclude ){ + assert( p->nExclude>=pSrc->nSrc ); + p->nExclude -= pSrc->nSrc; + } +} + +/* This is the Walker EXPR callback for sqlite3ReferencesSrcList(). +** +** Set the 0x01 bit of pWalker->eCode if there is a reference to any +** of the tables shown in RefSrcList.pRef. +** +** Set the 0x02 bit of pWalker->eCode if there is a reference to a +** table is in neither RefSrcList.pRef nor RefSrcList.aiExclude. +*/ +static int exprRefToSrcList(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_COLUMN + || pExpr->op==TK_AGG_COLUMN + ){ int i; - struct SrcCount *p = pWalker->u.pSrcCount; - SrcList *pSrc = p->pSrc; + struct RefSrcList *p = pWalker->u.pRefSrcList; + SrcList *pSrc = p->pRef; int nSrc = pSrc ? pSrc->nSrc : 0; for(i=0; iiTable==pSrc->a[i].iCursor ) break; + if( pExpr->iTable==pSrc->a[i].iCursor ){ + pWalker->eCode |= 1; + return WRC_Continue; + } } - if( inThis++; - }else{ - p->nOther++; + for(i=0; inExclude && p->aiExclude[i]!=pExpr->iTable; i++){} + if( i>=p->nExclude ){ + pWalker->eCode |= 2; } } return WRC_Continue; } /* -** Determine if any of the arguments to the pExpr Function reference -** pSrcList. Return true if they do. Also return true if the function -** has no arguments or has only constant arguments. Return false if pExpr -** references columns but not columns of tables found in pSrcList. +** Check to see if pExpr references any tables in pSrcList. +** Possible return values: +** +** 1 pExpr does references a table in pSrcList. +** +** 0 pExpr references some table that is not defined in either +** pSrcList or in subqueries of pExpr itself. +** +** -1 pExpr only references no tables at all, or it only +** references tables defined in subqueries of pExpr itself. +** +** As currently used, pExpr is always an aggregate function call. That +** fact is exploited for efficiency. */ -SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr *pExpr, SrcList *pSrcList){ +SQLITE_PRIVATE int sqlite3ReferencesSrcList(Parse *pParse, Expr *pExpr, SrcList *pSrcList){ Walker w; - struct SrcCount cnt; + struct RefSrcList x; + assert( pParse->db!=0 ); + memset(&w, 0, sizeof(w)); + memset(&x, 0, sizeof(x)); + w.xExprCallback = exprRefToSrcList; + w.xSelectCallback = selectRefEnter; + w.xSelectCallback2 = selectRefLeave; + w.u.pRefSrcList = &x; + x.db = pParse->db; + x.pRef = pSrcList; assert( pExpr->op==TK_AGG_FUNCTION ); - w.xExprCallback = exprSrcCount; - w.xSelectCallback = 0; - w.u.pSrcCount = &cnt; - cnt.pSrc = pSrcList; - cnt.nThis = 0; - cnt.nOther = 0; + assert( ExprUseXList(pExpr) ); sqlite3WalkExprList(&w, pExpr->x.pList); - return cnt.nThis>0 || cnt.nOther==0; +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + sqlite3WalkExpr(&w, pExpr->y.pWin->pFilter); + } +#endif + if( x.aiExclude ) sqlite3DbNNFreeNN(pParse->db, x.aiExclude); + if( w.eCode & 0x01 ){ + return 1; + }else if( w.eCode ){ + return 0; + }else{ + return -1; + } +} + +/* +** This is a Walker expression node callback. +** +** For Expr nodes that contain pAggInfo pointers, make sure the AggInfo +** object that is referenced does not refer directly to the Expr. If +** it does, make a copy. This is done because the pExpr argument is +** subject to change. +** +** The copy is scheduled for deletion using the sqlite3ExprDeferredDelete() +** which builds on the sqlite3ParserAddCleanup() mechanism. +*/ +static int agginfoPersistExprCb(Walker *pWalker, Expr *pExpr){ + if( ALWAYS(!ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced)) + && pExpr->pAggInfo!=0 + ){ + AggInfo *pAggInfo = pExpr->pAggInfo; + int iAgg = pExpr->iAgg; + Parse *pParse = pWalker->pParse; + sqlite3 *db = pParse->db; + assert( iAgg>=0 ); + if( pExpr->op!=TK_AGG_FUNCTION ){ + if( iAggnColumn + && pAggInfo->aCol[iAgg].pCExpr==pExpr + ){ + pExpr = sqlite3ExprDup(db, pExpr, 0); + if( pExpr ){ + pAggInfo->aCol[iAgg].pCExpr = pExpr; + sqlite3ExprDeferredDelete(pParse, pExpr); + } + } + }else{ + assert( pExpr->op==TK_AGG_FUNCTION ); + if( ALWAYS(iAggnFunc) + && pAggInfo->aFunc[iAgg].pFExpr==pExpr + ){ + pExpr = sqlite3ExprDup(db, pExpr, 0); + if( pExpr ){ + pAggInfo->aFunc[iAgg].pFExpr = pExpr; + sqlite3ExprDeferredDelete(pParse, pExpr); + } + } + } + } + return WRC_Continue; +} + +/* +** Initialize a Walker object so that will persist AggInfo entries referenced +** by the tree that is walked. +*/ +SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker *pWalker, Parse *pParse){ + memset(pWalker, 0, sizeof(*pWalker)); + pWalker->pParse = pParse; + pWalker->xExprCallback = agginfoPersistExprCb; + pWalker->xSelectCallback = sqlite3SelectWalkNoop; } /* @@ -99978,7 +113813,7 @@ static int addAggInfoColumn(sqlite3 *db, AggInfo *pInfo){ &i ); return i; -} +} /* ** Add a new element to the pAggInfo->aFunc[] array. Return the index of @@ -99987,14 +113822,82 @@ static int addAggInfoColumn(sqlite3 *db, AggInfo *pInfo){ static int addAggInfoFunc(sqlite3 *db, AggInfo *pInfo){ int i; pInfo->aFunc = sqlite3ArrayAllocate( - db, + db, pInfo->aFunc, sizeof(pInfo->aFunc[0]), &pInfo->nFunc, &i ); return i; -} +} + +/* +** Search the AggInfo object for an aCol[] entry that has iTable and iColumn. +** Return the index in aCol[] of the entry that describes that column. +** +** If no prior entry is found, create a new one and return -1. The +** new column will have an index of pAggInfo->nColumn-1. +*/ +static void findOrCreateAggInfoColumn( + Parse *pParse, /* Parsing context */ + AggInfo *pAggInfo, /* The AggInfo object to search and/or modify */ + Expr *pExpr /* Expr describing the column to find or insert */ +){ + struct AggInfo_col *pCol; + int k; + + assert( pAggInfo->iFirstReg==0 ); + pCol = pAggInfo->aCol; + for(k=0; knColumn; k++, pCol++){ + if( pCol->pCExpr==pExpr ) return; + if( pCol->iTable==pExpr->iTable + && pCol->iColumn==pExpr->iColumn + && pExpr->op!=TK_IF_NULL_ROW + ){ + goto fix_up_expr; + } + } + k = addAggInfoColumn(pParse->db, pAggInfo); + if( k<0 ){ + /* OOM on resize */ + assert( pParse->db->mallocFailed ); + return; + } + pCol = &pAggInfo->aCol[k]; + assert( ExprUseYTab(pExpr) ); + pCol->pTab = pExpr->y.pTab; + pCol->iTable = pExpr->iTable; + pCol->iColumn = pExpr->iColumn; + pCol->iSorterColumn = -1; + pCol->pCExpr = pExpr; + if( pAggInfo->pGroupBy && pExpr->op!=TK_IF_NULL_ROW ){ + int j, n; + ExprList *pGB = pAggInfo->pGroupBy; + struct ExprList_item *pTerm = pGB->a; + n = pGB->nExpr; + for(j=0; jpExpr; + if( pE->op==TK_COLUMN + && pE->iTable==pExpr->iTable + && pE->iColumn==pExpr->iColumn + ){ + pCol->iSorterColumn = j; + break; + } + } + } + if( pCol->iSorterColumn<0 ){ + pCol->iSorterColumn = pAggInfo->nSortingColumn++; + } +fix_up_expr: + ExprSetVVAProperty(pExpr, EP_NoReduce); + assert( pExpr->pAggInfo==0 || pExpr->pAggInfo==pAggInfo ); + pExpr->pAggInfo = pAggInfo; + if( pExpr->op==TK_COLUMN ){ + pExpr->op = TK_AGG_COLUMN; + } + pExpr->iAgg = (i16)k; +} /* ** This is the xExprCallback for a tree walker. It is used to @@ -100009,86 +113912,76 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){ AggInfo *pAggInfo = pNC->uNC.pAggInfo; assert( pNC->ncFlags & NC_UAggInfo ); + assert( pAggInfo->iFirstReg==0 ); switch( pExpr->op ){ + default: { + IndexedExpr *pIEpr; + Expr tmp; + assert( pParse->iSelfTab==0 ); + if( (pNC->ncFlags & NC_InAggFunc)==0 ) break; + if( pParse->pIdxEpr==0 ) break; + for(pIEpr=pParse->pIdxEpr; pIEpr; pIEpr=pIEpr->pIENext){ + int iDataCur = pIEpr->iDataCur; + if( iDataCur<0 ) continue; + if( sqlite3ExprCompare(0, pExpr, pIEpr->pExpr, iDataCur)==0 ) break; + } + if( pIEpr==0 ) break; + if( NEVER(!ExprUseYTab(pExpr)) ) break; + for(i=0; inSrc; i++){ + if( pSrcList->a[0].iCursor==pIEpr->iDataCur ) break; + } + if( i>=pSrcList->nSrc ) break; + if( NEVER(pExpr->pAggInfo!=0) ) break; /* Resolved by outer context */ + if( pParse->nErr ){ return WRC_Abort; } + + /* If we reach this point, it means that expression pExpr can be + ** translated into a reference to an index column as described by + ** pIEpr. + */ + memset(&tmp, 0, sizeof(tmp)); + tmp.op = TK_AGG_COLUMN; + tmp.iTable = pIEpr->iIdxCur; + tmp.iColumn = pIEpr->iIdxCol; + findOrCreateAggInfoColumn(pParse, pAggInfo, &tmp); + if( pParse->nErr ){ return WRC_Abort; } + assert( pAggInfo->aCol!=0 ); + assert( tmp.iAggnColumn ); + pAggInfo->aCol[tmp.iAgg].pCExpr = pExpr; + pExpr->pAggInfo = pAggInfo; + pExpr->iAgg = tmp.iAgg; + return WRC_Prune; + } + case TK_IF_NULL_ROW: case TK_AGG_COLUMN: case TK_COLUMN: { testcase( pExpr->op==TK_AGG_COLUMN ); testcase( pExpr->op==TK_COLUMN ); + testcase( pExpr->op==TK_IF_NULL_ROW ); /* Check to see if the column is in one of the tables in the FROM ** clause of the aggregate query */ if( ALWAYS(pSrcList!=0) ){ - struct SrcList_item *pItem = pSrcList->a; + SrcItem *pItem = pSrcList->a; for(i=0; inSrc; i++, pItem++){ - struct AggInfo_col *pCol; assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) ); if( pExpr->iTable==pItem->iCursor ){ - /* If we reach this point, it means that pExpr refers to a table - ** that is in the FROM clause of the aggregate query. - ** - ** Make an entry for the column in pAggInfo->aCol[] if there - ** is not an entry there already. - */ - int k; - pCol = pAggInfo->aCol; - for(k=0; knColumn; k++, pCol++){ - if( pCol->iTable==pExpr->iTable && - pCol->iColumn==pExpr->iColumn ){ - break; - } - } - if( (k>=pAggInfo->nColumn) - && (k = addAggInfoColumn(pParse->db, pAggInfo))>=0 - ){ - pCol = &pAggInfo->aCol[k]; - pCol->pTab = pExpr->pTab; - pCol->iTable = pExpr->iTable; - pCol->iColumn = pExpr->iColumn; - pCol->iMem = ++pParse->nMem; - pCol->iSorterColumn = -1; - pCol->pExpr = pExpr; - if( pAggInfo->pGroupBy ){ - int j, n; - ExprList *pGB = pAggInfo->pGroupBy; - struct ExprList_item *pTerm = pGB->a; - n = pGB->nExpr; - for(j=0; jpExpr; - if( pE->op==TK_COLUMN && pE->iTable==pExpr->iTable && - pE->iColumn==pExpr->iColumn ){ - pCol->iSorterColumn = j; - break; - } - } - } - if( pCol->iSorterColumn<0 ){ - pCol->iSorterColumn = pAggInfo->nSortingColumn++; - } - } - /* There is now an entry for pExpr in pAggInfo->aCol[] (either - ** because it was there before or because we just created it). - ** Convert the pExpr to be a TK_AGG_COLUMN referring to that - ** pAggInfo->aCol[] entry. - */ - ExprSetVVAProperty(pExpr, EP_NoReduce); - pExpr->pAggInfo = pAggInfo; - pExpr->op = TK_AGG_COLUMN; - pExpr->iAgg = (i16)k; + findOrCreateAggInfoColumn(pParse, pAggInfo, pExpr); break; } /* endif pExpr->iTable==pItem->iCursor */ } /* end loop over pSrcList */ } - return WRC_Prune; + return WRC_Continue; } case TK_AGG_FUNCTION: { if( (pNC->ncFlags & NC_InAggFunc)==0 && pWalker->walkerDepth==pExpr->op2 ){ - /* Check to see if pExpr is a duplicate of another aggregate + /* Check to see if pExpr is a duplicate of another aggregate ** function that is already in the pAggInfo structure */ struct AggInfo_func *pItem = pAggInfo->aFunc; for(i=0; inFunc; i++, pItem++){ - if( sqlite3ExprCompare(0, pItem->pExpr, pExpr, -1)==0 ){ + if( pItem->pFExpr==pExpr ) break; + if( sqlite3ExprCompare(0, pItem->pFExpr, pExpr, -1)==0 ){ break; } } @@ -100100,11 +113993,10 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){ if( i>=0 ){ assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); pItem = &pAggInfo->aFunc[i]; - pItem->pExpr = pExpr; - pItem->iMem = ++pParse->nMem; - assert( !ExprHasProperty(pExpr, EP_IntValue) ); + pItem->pFExpr = pExpr; + assert( ExprUseUToken(pExpr) ); pItem->pFunc = sqlite3FindFunction(pParse->db, - pExpr->u.zToken, + pExpr->u.zToken, pExpr->x.pList ? pExpr->x.pList->nExpr : 0, enc, 0); if( pExpr->flags & EP_Distinct ){ pItem->iDistinct = pParse->nTab++; @@ -100127,15 +114019,6 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){ } return WRC_Continue; } -static int analyzeAggregatesInSelect(Walker *pWalker, Select *pSelect){ - UNUSED_PARAMETER(pSelect); - pWalker->walkerDepth++; - return WRC_Continue; -} -static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){ - UNUSED_PARAMETER(pSelect); - pWalker->walkerDepth--; -} /* ** Analyze the pExpr expression looking for aggregate functions and @@ -100149,10 +114032,11 @@ static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){ SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext *pNC, Expr *pExpr){ Walker w; w.xExprCallback = analyzeAggregate; - w.xSelectCallback = analyzeAggregatesInSelect; - w.xSelectCallback2 = analyzeAggregatesInSelectEnd; + w.xSelectCallback = sqlite3WalkerDepthIncrease; + w.xSelectCallback2 = sqlite3WalkerDepthDecrease; w.walkerDepth = 0; w.u.pNC = pNC; + w.pParse = 0; assert( pNC->pSrcList!=0 ); sqlite3WalkExpr(&w, pExpr); } @@ -100186,22 +114070,13 @@ SQLITE_PRIVATE int sqlite3GetTempReg(Parse *pParse){ /* ** Deallocate a register, making available for reuse for some other ** purpose. -** -** If a register is currently being used by the column cache, then -** the deallocation is deferred until the column cache line that uses -** the register becomes stale. */ SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ - if( iReg && pParse->nTempRegaTempReg) ){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; inColCache; i++, p++){ - if( p->iReg==iReg ){ - p->tempReg = 1; - return; - } + if( iReg ){ + sqlite3VdbeReleaseRegisters(pParse, iReg, 1, 0, 0); + if( pParse->nTempRegaTempReg) ){ + pParse->aTempReg[pParse->nTempReg++] = iReg; } - pParse->aTempReg[pParse->nTempReg++] = iReg; } } @@ -100214,7 +114089,6 @@ SQLITE_PRIVATE int sqlite3GetTempRange(Parse *pParse, int nReg){ i = pParse->iRangeReg; n = pParse->nRangeReg; if( nReg<=n ){ - assert( !usedAsColumnCache(pParse, i, i+n-1) ); pParse->iRangeReg += nReg; pParse->nRangeReg -= nReg; }else{ @@ -100228,7 +114102,7 @@ SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse *pParse, int iReg, int nReg){ sqlite3ReleaseTempReg(pParse, iReg); return; } - sqlite3ExprCacheRemove(pParse, iReg, nReg); + sqlite3VdbeReleaseRegisters(pParse, iReg, nReg, 0, 0); if( nReg>pParse->nRangeReg ){ pParse->nRangeReg = nReg; pParse->iRangeReg = iReg; @@ -100237,12 +114111,48 @@ SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse *pParse, int iReg, int nReg){ /* ** Mark all temporary registers as being unavailable for reuse. +** +** Always invoke this procedure after coding a subroutine or co-routine +** that might be invoked from other parts of the code, to ensure that +** the sub/co-routine does not use registers in common with the code that +** invokes the sub/co-routine. */ SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){ pParse->nTempReg = 0; pParse->nRangeReg = 0; } +/* +** Make sure sufficient registers have been allocated so that +** iReg is a valid register number. +*/ +SQLITE_PRIVATE void sqlite3TouchRegister(Parse *pParse, int iReg){ + if( pParse->nMemnMem = iReg; +} + +#if defined(SQLITE_ENABLE_STAT4) || defined(SQLITE_DEBUG) +/* +** Return the latest reusable register in the set of all registers. +** The value returned is no less than iMin. If any register iMin or +** greater is in permanent use, then return one more than that last +** permanent register. +*/ +SQLITE_PRIVATE int sqlite3FirstAvailableRegister(Parse *pParse, int iMin){ + const ExprList *pList = pParse->pConstExpr; + if( pList ){ + int i; + for(i=0; inExpr; i++){ + if( pList->a[i].u.iConstExprReg>=iMin ){ + iMin = pList->a[i].u.iConstExprReg + 1; + } + } + } + pParse->nTempReg = 0; + pParse->nRangeReg = 0; + return iMin; +} +#endif /* SQLITE_ENABLE_STAT4 || SQLITE_DEBUG */ + /* ** Validate that no temporary register falls within the range of ** iFirst..iLast, inclusive. This routine is only call from within assert() @@ -100262,6 +114172,14 @@ SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse *pParse, int iFirst, int iLast){ return 0; } } + if( pParse->pConstExpr ){ + ExprList *pList = pParse->pConstExpr; + for(i=0; inExpr; i++){ + int iReg = pList->a[i].u.iConstExprReg; + if( iReg==0 ) continue; + if( iReg>=iFirst && iReg<=iLast ) return 0; + } + } return 1; } #endif /* SQLITE_DEBUG */ @@ -100290,352 +114208,6 @@ SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse *pParse, int iFirst, int iLast){ */ #ifndef SQLITE_OMIT_ALTERTABLE - -/* -** This function is used by SQL generated to implement the -** ALTER TABLE command. The first argument is the text of a CREATE TABLE or -** CREATE INDEX command. The second is a table name. The table name in -** the CREATE TABLE or CREATE INDEX statement is replaced with the third -** argument and the result returned. Examples: -** -** sqlite_rename_table('CREATE TABLE abc(a, b, c)', 'def') -** -> 'CREATE TABLE def(a, b, c)' -** -** sqlite_rename_table('CREATE INDEX i ON abc(a)', 'def') -** -> 'CREATE INDEX i ON def(a, b, c)' -*/ -static void renameTableFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - unsigned char const *zSql = sqlite3_value_text(argv[0]); - unsigned char const *zTableName = sqlite3_value_text(argv[1]); - - int token; - Token tname; - unsigned char const *zCsr = zSql; - int len = 0; - char *zRet; - - sqlite3 *db = sqlite3_context_db_handle(context); - - UNUSED_PARAMETER(NotUsed); - - /* The principle used to locate the table name in the CREATE TABLE - ** statement is that the table name is the first non-space token that - ** is immediately followed by a TK_LP or TK_USING token. - */ - if( zSql ){ - do { - if( !*zCsr ){ - /* Ran out of input before finding an opening bracket. Return NULL. */ - return; - } - - /* Store the token that zCsr points to in tname. */ - tname.z = (char*)zCsr; - tname.n = len; - - /* Advance zCsr to the next token. Store that token type in 'token', - ** and its length in 'len' (to be used next iteration of this loop). - */ - do { - zCsr += len; - len = sqlite3GetToken(zCsr, &token); - } while( token==TK_SPACE ); - assert( len>0 ); - } while( token!=TK_LP && token!=TK_USING ); - - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", (int)(((u8*)tname.z) - zSql), - zSql, zTableName, tname.z+tname.n); - sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); - } -} - -/* -** This C function implements an SQL user function that is used by SQL code -** generated by the ALTER TABLE ... RENAME command to modify the definition -** of any foreign key constraints that use the table being renamed as the -** parent table. It is passed three arguments: -** -** 1) The complete text of the CREATE TABLE statement being modified, -** 2) The old name of the table being renamed, and -** 3) The new name of the table being renamed. -** -** It returns the new CREATE TABLE statement. For example: -** -** sqlite_rename_parent('CREATE TABLE t1(a REFERENCES t2)', 't2', 't3') -** -> 'CREATE TABLE t1(a REFERENCES t3)' -*/ -#ifndef SQLITE_OMIT_FOREIGN_KEY -static void renameParentFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - sqlite3 *db = sqlite3_context_db_handle(context); - char *zOutput = 0; - char *zResult; - unsigned char const *zInput = sqlite3_value_text(argv[0]); - unsigned char const *zOld = sqlite3_value_text(argv[1]); - unsigned char const *zNew = sqlite3_value_text(argv[2]); - - unsigned const char *z; /* Pointer to token */ - int n; /* Length of token z */ - int token; /* Type of token */ - - UNUSED_PARAMETER(NotUsed); - if( zInput==0 || zOld==0 ) return; - for(z=zInput; *z; z=z+n){ - n = sqlite3GetToken(z, &token); - if( token==TK_REFERENCES ){ - char *zParent; - do { - z += n; - n = sqlite3GetToken(z, &token); - }while( token==TK_SPACE ); - - if( token==TK_ILLEGAL ) break; - zParent = sqlite3DbStrNDup(db, (const char *)z, n); - if( zParent==0 ) break; - sqlite3Dequote(zParent); - if( 0==sqlite3StrICmp((const char *)zOld, zParent) ){ - char *zOut = sqlite3MPrintf(db, "%s%.*s\"%w\"", - (zOutput?zOutput:""), (int)(z-zInput), zInput, (const char *)zNew - ); - sqlite3DbFree(db, zOutput); - zOutput = zOut; - zInput = &z[n]; - } - sqlite3DbFree(db, zParent); - } - } - - zResult = sqlite3MPrintf(db, "%s%s", (zOutput?zOutput:""), zInput), - sqlite3_result_text(context, zResult, -1, SQLITE_DYNAMIC); - sqlite3DbFree(db, zOutput); -} -#endif - -#ifndef SQLITE_OMIT_TRIGGER -/* This function is used by SQL generated to implement the -** ALTER TABLE command. The first argument is the text of a CREATE TRIGGER -** statement. The second is a table name. The table name in the CREATE -** TRIGGER statement is replaced with the third argument and the result -** returned. This is analagous to renameTableFunc() above, except for CREATE -** TRIGGER, not CREATE INDEX and CREATE TABLE. -*/ -static void renameTriggerFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - unsigned char const *zSql = sqlite3_value_text(argv[0]); - unsigned char const *zTableName = sqlite3_value_text(argv[1]); - - int token; - Token tname; - int dist = 3; - unsigned char const *zCsr = zSql; - int len = 0; - char *zRet; - sqlite3 *db = sqlite3_context_db_handle(context); - - UNUSED_PARAMETER(NotUsed); - - /* The principle used to locate the table name in the CREATE TRIGGER - ** statement is that the table name is the first token that is immediately - ** preceded by either TK_ON or TK_DOT and immediately followed by one - ** of TK_WHEN, TK_BEGIN or TK_FOR. - */ - if( zSql ){ - do { - - if( !*zCsr ){ - /* Ran out of input before finding the table name. Return NULL. */ - return; - } - - /* Store the token that zCsr points to in tname. */ - tname.z = (char*)zCsr; - tname.n = len; - - /* Advance zCsr to the next token. Store that token type in 'token', - ** and its length in 'len' (to be used next iteration of this loop). - */ - do { - zCsr += len; - len = sqlite3GetToken(zCsr, &token); - }while( token==TK_SPACE ); - assert( len>0 ); - - /* Variable 'dist' stores the number of tokens read since the most - ** recent TK_DOT or TK_ON. This means that when a WHEN, FOR or BEGIN - ** token is read and 'dist' equals 2, the condition stated above - ** to be met. - ** - ** Note that ON cannot be a database, table or column name, so - ** there is no need to worry about syntax like - ** "CREATE TRIGGER ... ON ON.ON BEGIN ..." etc. - */ - dist++; - if( token==TK_DOT || token==TK_ON ){ - dist = 0; - } - } while( dist!=2 || (token!=TK_WHEN && token!=TK_FOR && token!=TK_BEGIN) ); - - /* Variable tname now contains the token that is the old table-name - ** in the CREATE TRIGGER statement. - */ - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", (int)(((u8*)tname.z) - zSql), - zSql, zTableName, tname.z+tname.n); - sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); - } -} -#endif /* !SQLITE_OMIT_TRIGGER */ - -/* -** Register built-in functions used to help implement ALTER TABLE -*/ -SQLITE_PRIVATE void sqlite3AlterFunctions(void){ - static FuncDef aAlterTableFuncs[] = { - FUNCTION(sqlite_rename_table, 2, 0, 0, renameTableFunc), -#ifndef SQLITE_OMIT_TRIGGER - FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc), -#endif -#ifndef SQLITE_OMIT_FOREIGN_KEY - FUNCTION(sqlite_rename_parent, 3, 0, 0, renameParentFunc), -#endif - }; - sqlite3InsertBuiltinFuncs(aAlterTableFuncs, ArraySize(aAlterTableFuncs)); -} - -/* -** This function is used to create the text of expressions of the form: -** -** name= OR name= OR ... -** -** If argument zWhere is NULL, then a pointer string containing the text -** "name=" is returned, where is the quoted version -** of the string passed as argument zConstant. The returned buffer is -** allocated using sqlite3DbMalloc(). It is the responsibility of the -** caller to ensure that it is eventually freed. -** -** If argument zWhere is not NULL, then the string returned is -** " OR name=", where is the contents of zWhere. -** In this case zWhere is passed to sqlite3DbFree() before returning. -** -*/ -static char *whereOrName(sqlite3 *db, char *zWhere, char *zConstant){ - char *zNew; - if( !zWhere ){ - zNew = sqlite3MPrintf(db, "name=%Q", zConstant); - }else{ - zNew = sqlite3MPrintf(db, "%s OR name=%Q", zWhere, zConstant); - sqlite3DbFree(db, zWhere); - } - return zNew; -} - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) -/* -** Generate the text of a WHERE expression which can be used to select all -** tables that have foreign key constraints that refer to table pTab (i.e. -** constraints for which pTab is the parent table) from the sqlite_master -** table. -*/ -static char *whereForeignKeys(Parse *pParse, Table *pTab){ - FKey *p; - char *zWhere = 0; - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - zWhere = whereOrName(pParse->db, zWhere, p->pFrom->zName); - } - return zWhere; -} -#endif - -/* -** Generate the text of a WHERE expression which can be used to select all -** temporary triggers on table pTab from the sqlite_temp_master table. If -** table pTab has no temporary triggers, or is itself stored in the -** temporary database, NULL is returned. -*/ -static char *whereTempTriggers(Parse *pParse, Table *pTab){ - Trigger *pTrig; - char *zWhere = 0; - const Schema *pTempSchema = pParse->db->aDb[1].pSchema; /* Temp db schema */ - - /* If the table is not located in the temp-db (in which case NULL is - ** returned, loop through the tables list of triggers. For each trigger - ** that is not part of the temp-db schema, add a clause to the WHERE - ** expression being built up in zWhere. - */ - if( pTab->pSchema!=pTempSchema ){ - sqlite3 *db = pParse->db; - for(pTrig=sqlite3TriggerList(pParse, pTab); pTrig; pTrig=pTrig->pNext){ - if( pTrig->pSchema==pTempSchema ){ - zWhere = whereOrName(db, zWhere, pTrig->zName); - } - } - } - if( zWhere ){ - char *zNew = sqlite3MPrintf(pParse->db, "type='trigger' AND (%s)", zWhere); - sqlite3DbFree(pParse->db, zWhere); - zWhere = zNew; - } - return zWhere; -} - -/* -** Generate code to drop and reload the internal representation of table -** pTab from the database, including triggers and temporary triggers. -** Argument zName is the name of the table in the database schema at -** the time the generated code is executed. This can be different from -** pTab->zName if this function is being called to code part of an -** "ALTER TABLE RENAME TO" statement. -*/ -static void reloadTableSchema(Parse *pParse, Table *pTab, const char *zName){ - Vdbe *v; - char *zWhere; - int iDb; /* Index of database containing pTab */ -#ifndef SQLITE_OMIT_TRIGGER - Trigger *pTrig; -#endif - - v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return; - assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); - iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - assert( iDb>=0 ); - -#ifndef SQLITE_OMIT_TRIGGER - /* Drop any table triggers from the internal schema. */ - for(pTrig=sqlite3TriggerList(pParse, pTab); pTrig; pTrig=pTrig->pNext){ - int iTrigDb = sqlite3SchemaToIndex(pParse->db, pTrig->pSchema); - assert( iTrigDb==iDb || iTrigDb==1 ); - sqlite3VdbeAddOp4(v, OP_DropTrigger, iTrigDb, 0, 0, pTrig->zName, 0); - } -#endif - - /* Drop the table and index from the internal schema. */ - sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0); - - /* Reload the table, index and permanent trigger schemas. */ - zWhere = sqlite3MPrintf(pParse->db, "tbl_name=%Q", zName); - if( !zWhere ) return; - sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere); - -#ifndef SQLITE_OMIT_TRIGGER - /* Now, if the table is not stored in the temp database, reload any temp - ** triggers. Don't use IN(...) in case SQLITE_OMIT_SUBQUERY is defined. - */ - if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){ - sqlite3VdbeAddParseSchemaOp(v, 1, zWhere); - } -#endif -} - /* ** Parameter zName is the name of a table that is about to be altered ** (either with ALTER TABLE ... RENAME TO or ALTER TABLE ... ADD COLUMN). @@ -100644,17 +114216,98 @@ static void reloadTableSchema(Parse *pParse, Table *pTab, const char *zName){ ** ** Or, if zName is not a system table, zero is returned. */ -static int isSystemTable(Parse *pParse, const char *zName){ - if( 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){ - sqlite3ErrorMsg(pParse, "table %s may not be altered", zName); +static int isAlterableTable(Parse *pParse, Table *pTab){ + if( 0==sqlite3StrNICmp(pTab->zName, "sqlite_", 7) +#ifndef SQLITE_OMIT_VIRTUALTABLE + || (pTab->tabFlags & TF_Eponymous)!=0 + || ( (pTab->tabFlags & TF_Shadow)!=0 + && sqlite3ReadOnlyShadowTables(pParse->db) + ) +#endif + ){ + sqlite3ErrorMsg(pParse, "table %s may not be altered", pTab->zName); return 1; } return 0; } /* -** Generate code to implement the "ALTER TABLE xxx RENAME TO yyy" -** command. +** Generate code to verify that the schemas of database zDb and, if +** bTemp is not true, database "temp", can still be parsed. This is +** called at the end of the generation of an ALTER TABLE ... RENAME ... +** statement to ensure that the operation has not rendered any schema +** objects unusable. +*/ +static void renameTestSchema( + Parse *pParse, /* Parse context */ + const char *zDb, /* Name of db to verify schema of */ + int bTemp, /* True if this is the temp db */ + const char *zWhen, /* "when" part of error message */ + int bNoDQS /* Do not allow DQS in the schema */ +){ + pParse->colNamesSet = 1; + sqlite3NestedParse(pParse, + "SELECT 1 " + "FROM \"%w\"." LEGACY_SCHEMA_TABLE " " + "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'" + " AND sql NOT LIKE 'create virtual%%'" + " AND sqlite_rename_test(%Q, sql, type, name, %d, %Q, %d)=NULL ", + zDb, + zDb, bTemp, zWhen, bNoDQS + ); + + if( bTemp==0 ){ + sqlite3NestedParse(pParse, + "SELECT 1 " + "FROM temp." LEGACY_SCHEMA_TABLE " " + "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'" + " AND sql NOT LIKE 'create virtual%%'" + " AND sqlite_rename_test(%Q, sql, type, name, 1, %Q, %d)=NULL ", + zDb, zWhen, bNoDQS + ); + } +} + +/* +** Generate VM code to replace any double-quoted strings (but not double-quoted +** identifiers) within the "sql" column of the sqlite_schema table in +** database zDb with their single-quoted equivalents. If argument bTemp is +** not true, similarly update all SQL statements in the sqlite_schema table +** of the temp db. +*/ +static void renameFixQuotes(Parse *pParse, const char *zDb, int bTemp){ + sqlite3NestedParse(pParse, + "UPDATE \"%w\"." LEGACY_SCHEMA_TABLE + " SET sql = sqlite_rename_quotefix(%Q, sql)" + "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'" + " AND sql NOT LIKE 'create virtual%%'" , zDb, zDb + ); + if( bTemp==0 ){ + sqlite3NestedParse(pParse, + "UPDATE temp." LEGACY_SCHEMA_TABLE + " SET sql = sqlite_rename_quotefix('temp', sql)" + "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'" + " AND sql NOT LIKE 'create virtual%%'" + ); + } +} + +/* +** Generate code to reload the schema for database iDb. And, if iDb!=1, for +** the temp database as well. +*/ +static void renameReloadSchema(Parse *pParse, int iDb, u16 p5){ + Vdbe *v = pParse->pVdbe; + if( v ){ + sqlite3ChangeCookie(pParse, iDb); + sqlite3VdbeAddParseSchemaOp(pParse->pVdbe, iDb, 0, p5); + if( iDb!=1 ) sqlite3VdbeAddParseSchemaOp(pParse->pVdbe, 1, 0, p5); + } +} + +/* +** Generate code to implement the "ALTER TABLE xxx RENAME TO yyy" +** command. */ SQLITE_PRIVATE void sqlite3AlterRenameTable( Parse *pParse, /* Parser context. */ @@ -100664,18 +114317,13 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( int iDb; /* Database that contains the table */ char *zDb; /* Name of database iDb */ Table *pTab; /* Table being renamed */ - char *zName = 0; /* NULL-terminated version of pName */ + char *zName = 0; /* NULL-terminated version of pName */ sqlite3 *db = pParse->db; /* Database connection */ int nTabName; /* Number of UTF-8 characters in zTabName */ const char *zTabName; /* Original name of the table */ Vdbe *v; -#ifndef SQLITE_OMIT_TRIGGER - char *zWhere = 0; /* Where clause to locate temp triggers */ -#endif VTable *pVTab = 0; /* Non-zero if this is a v-tab with an xRename() */ - u32 savedDbFlags; /* Saved value of db->mDbFlags */ - savedDbFlags = db->mDbFlags; if( NEVER(db->mallocFailed) ) goto exit_rename_table; assert( pSrc->nSrc==1 ); assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); @@ -100684,7 +114332,6 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( if( !pTab ) goto exit_rename_table; iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); zDb = db->aDb[iDb].zDbSName; - db->mDbFlags |= DBFLAG_PreferBuiltin; /* Get a NULL terminated version of the new table name. */ zName = sqlite3NameFromToken(db, pName); @@ -100693,8 +114340,11 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( /* Check that a table or index named 'zName' does not already exist ** in database iDb. If so, this is an error. */ - if( sqlite3FindTable(db, zName, zDb) || sqlite3FindIndex(db, zName, zDb) ){ - sqlite3ErrorMsg(pParse, + if( sqlite3FindTable(db, zName, zDb) + || sqlite3FindIndex(db, zName, zDb) + || sqlite3IsShadowTableOf(db, pTab, zName) + ){ + sqlite3ErrorMsg(pParse, "there is already another table or index with this name: %s", zName); goto exit_rename_table; } @@ -100702,15 +114352,15 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( /* Make sure it is not a system table being altered, or a reserved name ** that the table is being renamed to. */ - if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){ + if( SQLITE_OK!=isAlterableTable(pParse, pTab) ){ goto exit_rename_table; } - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto - exit_rename_table; + if( SQLITE_OK!=sqlite3CheckObjectName(pParse,zName,"table",zName) ){ + goto exit_rename_table; } #ifndef SQLITE_OMIT_VIEW - if( pTab->pSelect ){ + if( IsView(pTab) ){ sqlite3ErrorMsg(pParse, "view %s may not be altered", pTab->zName); goto exit_rename_table; } @@ -100735,17 +114385,73 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( } #endif - /* Begin a transaction for database iDb. - ** Then modify the schema cookie (since the ALTER TABLE modifies the - ** schema). Open a statement transaction if the table is a virtual - ** table. - */ + /* Begin a transaction for database iDb. Then modify the schema cookie + ** (since the ALTER TABLE modifies the schema). Call sqlite3MayAbort(), + ** as the scalar functions (e.g. sqlite_rename_table()) invoked by the + ** nested SQL may raise an exception. */ v = sqlite3GetVdbe(pParse); if( v==0 ){ goto exit_rename_table; } - sqlite3BeginWriteOperation(pParse, pVTab!=0, iDb); - sqlite3ChangeCookie(pParse, iDb); + sqlite3MayAbort(pParse); + + /* figure out how many UTF-8 characters are in zName */ + zTabName = pTab->zName; + nTabName = sqlite3Utf8CharLen(zTabName, -1); + + /* Rewrite all CREATE TABLE, INDEX, TRIGGER or VIEW statements in + ** the schema to use the new table name. */ + sqlite3NestedParse(pParse, + "UPDATE \"%w\"." LEGACY_SCHEMA_TABLE " SET " + "sql = sqlite_rename_table(%Q, type, name, sql, %Q, %Q, %d) " + "WHERE (type!='index' OR tbl_name=%Q COLLATE nocase)" + "AND name NOT LIKE 'sqliteX_%%' ESCAPE 'X'" + , zDb, zDb, zTabName, zName, (iDb==1), zTabName + ); + + /* Update the tbl_name and name columns of the sqlite_schema table + ** as required. */ + sqlite3NestedParse(pParse, + "UPDATE %Q." LEGACY_SCHEMA_TABLE " SET " + "tbl_name = %Q, " + "name = CASE " + "WHEN type='table' THEN %Q " + "WHEN name LIKE 'sqliteX_autoindex%%' ESCAPE 'X' " + " AND type='index' THEN " + "'sqlite_autoindex_' || %Q || substr(name,%d+18) " + "ELSE name END " + "WHERE tbl_name=%Q COLLATE nocase AND " + "(type='table' OR type='index' OR type='trigger');", + zDb, + zName, zName, zName, + nTabName, zTabName + ); + +#ifndef SQLITE_OMIT_AUTOINCREMENT + /* If the sqlite_sequence table exists in this database, then update + ** it with the new table name. + */ + if( sqlite3FindTable(db, "sqlite_sequence", zDb) ){ + sqlite3NestedParse(pParse, + "UPDATE \"%w\".sqlite_sequence set name = %Q WHERE name = %Q", + zDb, zName, pTab->zName); + } +#endif + + /* If the table being renamed is not itself part of the temp database, + ** edit view and trigger definitions within the temp database + ** as required. */ + if( iDb!=1 ){ + sqlite3NestedParse(pParse, + "UPDATE sqlite_temp_schema SET " + "sql = sqlite_rename_table(%Q, type, name, sql, %Q, %Q, 1), " + "tbl_name = " + "CASE WHEN tbl_name=%Q COLLATE nocase AND " + " sqlite_rename_test(%Q, sql, type, name, 1, 'after rename', 0) " + "THEN %Q ELSE tbl_name END " + "WHERE type IN ('view', 'trigger')" + , zDb, zTabName, zName, zTabName, zDb, zName); + } /* If this is a virtual table, invoke the xRename() function if ** one is defined. The xRename() callback will modify the names @@ -100757,99 +114463,31 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( int i = ++pParse->nMem; sqlite3VdbeLoadString(v, i, zName); sqlite3VdbeAddOp4(v, OP_VRename, i, 0, 0,(const char*)pVTab, P4_VTAB); - sqlite3MayAbort(pParse); } #endif - /* figure out how many UTF-8 characters are in zName */ - zTabName = pTab->zName; - nTabName = sqlite3Utf8CharLen(zTabName, -1); - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - if( db->flags&SQLITE_ForeignKeys ){ - /* If foreign-key support is enabled, rewrite the CREATE TABLE - ** statements corresponding to all child tables of foreign key constraints - ** for which the renamed table is the parent table. */ - if( (zWhere=whereForeignKeys(pParse, pTab))!=0 ){ - sqlite3NestedParse(pParse, - "UPDATE \"%w\".%s SET " - "sql = sqlite_rename_parent(sql, %Q, %Q) " - "WHERE %s;", zDb, MASTER_NAME, zTabName, zName, zWhere); - sqlite3DbFree(db, zWhere); - } - } -#endif - - /* Modify the sqlite_master table to use the new table name. */ - sqlite3NestedParse(pParse, - "UPDATE %Q.%s SET " -#ifdef SQLITE_OMIT_TRIGGER - "sql = sqlite_rename_table(sql, %Q), " -#else - "sql = CASE " - "WHEN type = 'trigger' THEN sqlite_rename_trigger(sql, %Q)" - "ELSE sqlite_rename_table(sql, %Q) END, " -#endif - "tbl_name = %Q, " - "name = CASE " - "WHEN type='table' THEN %Q " - "WHEN name LIKE 'sqlite_autoindex%%' AND type='index' THEN " - "'sqlite_autoindex_' || %Q || substr(name,%d+18) " - "ELSE name END " - "WHERE tbl_name=%Q COLLATE nocase AND " - "(type='table' OR type='index' OR type='trigger');", - zDb, MASTER_NAME, zName, zName, zName, -#ifndef SQLITE_OMIT_TRIGGER - zName, -#endif - zName, nTabName, zTabName - ); - -#ifndef SQLITE_OMIT_AUTOINCREMENT - /* If the sqlite_sequence table exists in this database, then update - ** it with the new table name. - */ - if( sqlite3FindTable(db, "sqlite_sequence", zDb) ){ - sqlite3NestedParse(pParse, - "UPDATE \"%w\".sqlite_sequence set name = %Q WHERE name = %Q", - zDb, zName, pTab->zName); - } -#endif - -#ifndef SQLITE_OMIT_TRIGGER - /* If there are TEMP triggers on this table, modify the sqlite_temp_master - ** table. Don't do this if the table being ALTERed is itself located in - ** the temp database. - */ - if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){ - sqlite3NestedParse(pParse, - "UPDATE sqlite_temp_master SET " - "sql = sqlite_rename_trigger(sql, %Q), " - "tbl_name = %Q " - "WHERE %s;", zName, zName, zWhere); - sqlite3DbFree(db, zWhere); - } -#endif - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - if( db->flags&SQLITE_ForeignKeys ){ - FKey *p; - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - Table *pFrom = p->pFrom; - if( pFrom!=pTab ){ - reloadTableSchema(pParse, p->pFrom, pFrom->zName); - } - } - } -#endif - - /* Drop and reload the internal table schema. */ - reloadTableSchema(pParse, pTab, zName); + renameReloadSchema(pParse, iDb, INITFLAG_AlterRename); + renameTestSchema(pParse, zDb, iDb==1, "after rename", 0); exit_rename_table: sqlite3SrcListDelete(db, pSrc); sqlite3DbFree(db, zName); - db->mDbFlags = savedDbFlags; +} + +/* +** Write code that will raise an error if the table described by +** zDb and zTab is not empty. +*/ +static void sqlite3ErrorIfNotEmpty( + Parse *pParse, /* Parsing context */ + const char *zDb, /* Schema holding the table */ + const char *zTab, /* Table to check for empty */ + const char *zErr /* Error message text */ +){ + sqlite3NestedParse(pParse, + "SELECT raise(ABORT,%Q) FROM \"%w\".\"%w\"", + zErr, zDb, zTab + ); } /* @@ -100870,12 +114508,13 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ Column *pCol; /* The new column */ Expr *pDflt; /* Default value for the new column */ sqlite3 *db; /* The database connection; */ - Vdbe *v = pParse->pVdbe; /* The prepared statement under construction */ + Vdbe *v; /* The prepared statement under construction */ int r1; /* Temporary registers */ db = pParse->db; - if( pParse->nErr || db->mallocFailed ) return; - assert( v!=0 ); + assert( db->pParse==pParse ); + if( pParse->nErr ) return; + assert( db->mallocFailed==0 ); pNew = pParse->pNewTable; assert( pNew ); @@ -100884,7 +114523,7 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ zDb = db->aDb[iDb].zDbSName; zTab = &pNew->zName[16]; /* Skip the "sqlite_altertab_" prefix on the name */ pCol = &pNew->aCol[pNew->nCol-1]; - pDflt = pCol->pDflt; + pDflt = sqlite3ColumnExpr(pNew, pCol); pTab = sqlite3FindTable(db, zTab, zDb); assert( pTab ); @@ -100895,14 +114534,6 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ } #endif - /* If the default value for the new column was specified with a - ** literal NULL, then set pDflt to 0. This simplifies checking - ** for an SQL NULL default below. - */ - assert( pDflt==0 || pDflt->op==TK_SPAN ); - if( pDflt && pDflt->pLeft->op==TK_NULL ){ - pDflt = 0; - } /* Check that the new column is not specified as PRIMARY KEY or UNIQUE. ** If there is a NOT NULL constraint, then the default value for the @@ -100913,86 +114544,120 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ return; } if( pNew->pIndex ){ - sqlite3ErrorMsg(pParse, "Cannot add a UNIQUE column"); + sqlite3ErrorMsg(pParse, + "Cannot add a UNIQUE column"); return; } - if( (db->flags&SQLITE_ForeignKeys) && pNew->pFKey && pDflt ){ - sqlite3ErrorMsg(pParse, - "Cannot add a REFERENCES column with non-NULL default value"); - return; - } - if( pCol->notNull && !pDflt ){ - sqlite3ErrorMsg(pParse, - "Cannot add a NOT NULL column with default value NULL"); - return; + if( (pCol->colFlags & COLFLAG_GENERATED)==0 ){ + /* If the default value for the new column was specified with a + ** literal NULL, then set pDflt to 0. This simplifies checking + ** for an SQL NULL default below. + */ + assert( pDflt==0 || pDflt->op==TK_SPAN ); + if( pDflt && pDflt->pLeft->op==TK_NULL ){ + pDflt = 0; + } + assert( IsOrdinaryTable(pNew) ); + if( (db->flags&SQLITE_ForeignKeys) && pNew->u.tab.pFKey && pDflt ){ + sqlite3ErrorIfNotEmpty(pParse, zDb, zTab, + "Cannot add a REFERENCES column with non-NULL default value"); + } + if( pCol->notNull && !pDflt ){ + sqlite3ErrorIfNotEmpty(pParse, zDb, zTab, + "Cannot add a NOT NULL column with default value NULL"); + } + + + /* Ensure the default expression is something that sqlite3ValueFromExpr() + ** can handle (i.e. not CURRENT_TIME etc.) + */ + if( pDflt ){ + sqlite3_value *pVal = 0; + int rc; + rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal); + assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); + if( rc!=SQLITE_OK ){ + assert( db->mallocFailed == 1 ); + return; + } + if( !pVal ){ + sqlite3ErrorIfNotEmpty(pParse, zDb, zTab, + "Cannot add a column with non-constant default"); + } + sqlite3ValueFree(pVal); + } + }else if( pCol->colFlags & COLFLAG_STORED ){ + sqlite3ErrorIfNotEmpty(pParse, zDb, zTab, "cannot add a STORED column"); } - /* Ensure the default expression is something that sqlite3ValueFromExpr() - ** can handle (i.e. not CURRENT_TIME etc.) - */ - if( pDflt ){ - sqlite3_value *pVal = 0; - int rc; - rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal); - assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); - if( rc!=SQLITE_OK ){ - assert( db->mallocFailed == 1 ); - return; - } - if( !pVal ){ - sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default"); - return; - } - sqlite3ValueFree(pVal); - } /* Modify the CREATE TABLE statement. */ zCol = sqlite3DbStrNDup(db, (char*)pColDef->z, pColDef->n); if( zCol ){ char *zEnd = &zCol[pColDef->n-1]; - u32 savedDbFlags = db->mDbFlags; while( zEnd>zCol && (*zEnd==';' || sqlite3Isspace(*zEnd)) ){ *zEnd-- = '\0'; } - db->mDbFlags |= DBFLAG_PreferBuiltin; - sqlite3NestedParse(pParse, - "UPDATE \"%w\".%s SET " - "sql = substr(sql,1,%d) || ', ' || %Q || substr(sql,%d) " - "WHERE type = 'table' AND name = %Q", - zDb, MASTER_NAME, pNew->addColOffset, zCol, pNew->addColOffset+1, + /* substr() operations on characters, but addColOffset is in bytes. So we + ** have to use printf() to translate between these units: */ + assert( IsOrdinaryTable(pTab) ); + assert( IsOrdinaryTable(pNew) ); + sqlite3NestedParse(pParse, + "UPDATE \"%w\"." LEGACY_SCHEMA_TABLE " SET " + "sql = printf('%%.%ds, ',sql) || %Q" + " || substr(sql,1+length(printf('%%.%ds',sql))) " + "WHERE type = 'table' AND name = %Q", + zDb, pNew->u.tab.addColOffset, zCol, pNew->u.tab.addColOffset, zTab ); sqlite3DbFree(db, zCol); - db->mDbFlags = savedDbFlags; } - /* Make sure the schema version is at least 3. But do not upgrade - ** from less than 3 to 4, as that will corrupt any preexisting DESC - ** index. - */ - r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); - sqlite3VdbeUsesBtree(v, iDb); - sqlite3VdbeAddOp2(v, OP_AddImm, r1, -2); - sqlite3VdbeAddOp2(v, OP_IfPos, r1, sqlite3VdbeCurrentAddr(v)+2); - VdbeCoverage(v); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, 3); - sqlite3ReleaseTempReg(pParse, r1); + v = sqlite3GetVdbe(pParse); + if( v ){ + /* Make sure the schema version is at least 3. But do not upgrade + ** from less than 3 to 4, as that will corrupt any preexisting DESC + ** index. + */ + r1 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); + sqlite3VdbeUsesBtree(v, iDb); + sqlite3VdbeAddOp2(v, OP_AddImm, r1, -2); + sqlite3VdbeAddOp2(v, OP_IfPos, r1, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, 3); + sqlite3ReleaseTempReg(pParse, r1); - /* Reload the schema of the modified table. */ - reloadTableSchema(pParse, pTab, pTab->zName); + /* Reload the table definition */ + renameReloadSchema(pParse, iDb, INITFLAG_AlterAdd); + + /* Verify that constraints are still satisfied */ + if( pNew->pCheck!=0 + || (pCol->notNull && (pCol->colFlags & COLFLAG_GENERATED)!=0) + ){ + sqlite3NestedParse(pParse, + "SELECT CASE WHEN quick_check GLOB 'CHECK*'" + " THEN raise(ABORT,'CHECK constraint failed')" + " ELSE raise(ABORT,'NOT NULL constraint failed')" + " END" + " FROM pragma_quick_check(%Q,%Q)" + " WHERE quick_check GLOB 'CHECK*' OR quick_check GLOB 'NULL*'", + zTab, zDb + ); + } + } } /* ** This function is called by the parser after the table-name in -** an "ALTER TABLE ADD" statement is parsed. Argument +** an "ALTER TABLE ADD" statement is parsed. Argument ** pSrc is the full-name of the table being altered. ** ** This routine makes a (partial) copy of the Table structure ** for the table being altered and sets Parse.pNewTable to point ** to it. Routines called by the parser as the column definition -** is parsed (i.e. sqlite3AddColumn()) add the new Column data to -** the copy. The copy of the Table structure is deleted by tokenize.c +** is parsed (i.e. sqlite3AddColumn()) add the new Column data to +** the copy. The copy of the Table structure is deleted by tokenize.c ** after parsing is finished. ** ** Routine sqlite3AlterFinishAddColumn() will be called to complete @@ -101001,7 +114666,6 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ Table *pNew; Table *pTab; - Vdbe *v; int iDb; int i; int nAlloc; @@ -101022,15 +114686,17 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ #endif /* Make sure this is not an attempt to ALTER a view. */ - if( pTab->pSelect ){ + if( IsView(pTab) ){ sqlite3ErrorMsg(pParse, "Cannot add a column to a view"); goto exit_begin_add_column; } - if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){ + if( SQLITE_OK!=isAlterableTable(pParse, pTab) ){ goto exit_begin_add_column; } - assert( pTab->addColOffset>0 ); + sqlite3MayAbort(pParse); + assert( IsOrdinaryTable(pTab) ); + assert( pTab->u.tab.addColOffset>0 ); iDb = sqlite3SchemaToIndex(db, pTab->pSchema); /* Put a copy of the Table struct in Parse.pNewTable for the @@ -101057,24 +114723,1769 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ memcpy(pNew->aCol, pTab->aCol, sizeof(Column)*pNew->nCol); for(i=0; inCol; i++){ Column *pCol = &pNew->aCol[i]; - pCol->zName = sqlite3DbStrDup(db, pCol->zName); - pCol->zColl = 0; - pCol->pDflt = 0; + pCol->zCnName = sqlite3DbStrDup(db, pCol->zCnName); + pCol->hName = sqlite3StrIHash(pCol->zCnName); } + assert( IsOrdinaryTable(pNew) ); + pNew->u.tab.pDfltList = sqlite3ExprListDup(db, pTab->u.tab.pDfltList, 0); pNew->pSchema = db->aDb[iDb].pSchema; - pNew->addColOffset = pTab->addColOffset; - pNew->nTabRef = 1; - - /* Begin a transaction and increment the schema cookie. */ - sqlite3BeginWriteOperation(pParse, 0, iDb); - v = sqlite3GetVdbe(pParse); - if( !v ) goto exit_begin_add_column; - sqlite3ChangeCookie(pParse, iDb); + pNew->u.tab.addColOffset = pTab->u.tab.addColOffset; + assert( pNew->nTabRef==1 ); exit_begin_add_column: sqlite3SrcListDelete(db, pSrc); return; } + +/* +** Parameter pTab is the subject of an ALTER TABLE ... RENAME COLUMN +** command. This function checks if the table is a view or virtual +** table (columns of views or virtual tables may not be renamed). If so, +** it loads an error message into pParse and returns non-zero. +** +** Or, if pTab is not a view or virtual table, zero is returned. +*/ +#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) +static int isRealTable(Parse *pParse, Table *pTab, int bDrop){ + const char *zType = 0; +#ifndef SQLITE_OMIT_VIEW + if( IsView(pTab) ){ + zType = "view"; + } +#endif +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( IsVirtual(pTab) ){ + zType = "virtual table"; + } +#endif + if( zType ){ + sqlite3ErrorMsg(pParse, "cannot %s %s \"%s\"", + (bDrop ? "drop column from" : "rename columns of"), + zType, pTab->zName + ); + return 1; + } + return 0; +} +#else /* !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) */ +# define isRealTable(x,y,z) (0) +#endif + +/* +** Handles the following parser reduction: +** +** cmd ::= ALTER TABLE pSrc RENAME COLUMN pOld TO pNew +*/ +SQLITE_PRIVATE void sqlite3AlterRenameColumn( + Parse *pParse, /* Parsing context */ + SrcList *pSrc, /* Table being altered. pSrc->nSrc==1 */ + Token *pOld, /* Name of column being changed */ + Token *pNew /* New column name */ +){ + sqlite3 *db = pParse->db; /* Database connection */ + Table *pTab; /* Table being updated */ + int iCol; /* Index of column being renamed */ + char *zOld = 0; /* Old column name */ + char *zNew = 0; /* New column name */ + const char *zDb; /* Name of schema containing the table */ + int iSchema; /* Index of the schema */ + int bQuote; /* True to quote the new name */ + + /* Locate the table to be altered */ + pTab = sqlite3LocateTableItem(pParse, 0, &pSrc->a[0]); + if( !pTab ) goto exit_rename_column; + + /* Cannot alter a system table */ + if( SQLITE_OK!=isAlterableTable(pParse, pTab) ) goto exit_rename_column; + if( SQLITE_OK!=isRealTable(pParse, pTab, 0) ) goto exit_rename_column; + + /* Which schema holds the table to be altered */ + iSchema = sqlite3SchemaToIndex(db, pTab->pSchema); + assert( iSchema>=0 ); + zDb = db->aDb[iSchema].zDbSName; + +#ifndef SQLITE_OMIT_AUTHORIZATION + /* Invoke the authorization callback. */ + if( sqlite3AuthCheck(pParse, SQLITE_ALTER_TABLE, zDb, pTab->zName, 0) ){ + goto exit_rename_column; + } +#endif + + /* Make sure the old name really is a column name in the table to be + ** altered. Set iCol to be the index of the column being renamed */ + zOld = sqlite3NameFromToken(db, pOld); + if( !zOld ) goto exit_rename_column; + for(iCol=0; iColnCol; iCol++){ + if( 0==sqlite3StrICmp(pTab->aCol[iCol].zCnName, zOld) ) break; + } + if( iCol==pTab->nCol ){ + sqlite3ErrorMsg(pParse, "no such column: \"%T\"", pOld); + goto exit_rename_column; + } + + /* Ensure the schema contains no double-quoted strings */ + renameTestSchema(pParse, zDb, iSchema==1, "", 0); + renameFixQuotes(pParse, zDb, iSchema==1); + + /* Do the rename operation using a recursive UPDATE statement that + ** uses the sqlite_rename_column() SQL function to compute the new + ** CREATE statement text for the sqlite_schema table. + */ + sqlite3MayAbort(pParse); + zNew = sqlite3NameFromToken(db, pNew); + if( !zNew ) goto exit_rename_column; + assert( pNew->n>0 ); + bQuote = sqlite3Isquote(pNew->z[0]); + sqlite3NestedParse(pParse, + "UPDATE \"%w\"." LEGACY_SCHEMA_TABLE " SET " + "sql = sqlite_rename_column(sql, type, name, %Q, %Q, %d, %Q, %d, %d) " + "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X' " + " AND (type != 'index' OR tbl_name = %Q)", + zDb, + zDb, pTab->zName, iCol, zNew, bQuote, iSchema==1, + pTab->zName + ); + + sqlite3NestedParse(pParse, + "UPDATE temp." LEGACY_SCHEMA_TABLE " SET " + "sql = sqlite_rename_column(sql, type, name, %Q, %Q, %d, %Q, %d, 1) " + "WHERE type IN ('trigger', 'view')", + zDb, pTab->zName, iCol, zNew, bQuote + ); + + /* Drop and reload the database schema. */ + renameReloadSchema(pParse, iSchema, INITFLAG_AlterRename); + renameTestSchema(pParse, zDb, iSchema==1, "after rename", 1); + + exit_rename_column: + sqlite3SrcListDelete(db, pSrc); + sqlite3DbFree(db, zOld); + sqlite3DbFree(db, zNew); + return; +} + +/* +** Each RenameToken object maps an element of the parse tree into +** the token that generated that element. The parse tree element +** might be one of: +** +** * A pointer to an Expr that represents an ID +** * The name of a table column in Column.zName +** +** A list of RenameToken objects can be constructed during parsing. +** Each new object is created by sqlite3RenameTokenMap(). +** As the parse tree is transformed, the sqlite3RenameTokenRemap() +** routine is used to keep the mapping current. +** +** After the parse finishes, renameTokenFind() routine can be used +** to look up the actual token value that created some element in +** the parse tree. +*/ +struct RenameToken { + const void *p; /* Parse tree element created by token t */ + Token t; /* The token that created parse tree element p */ + RenameToken *pNext; /* Next is a list of all RenameToken objects */ +}; + +/* +** The context of an ALTER TABLE RENAME COLUMN operation that gets passed +** down into the Walker. +*/ +typedef struct RenameCtx RenameCtx; +struct RenameCtx { + RenameToken *pList; /* List of tokens to overwrite */ + int nList; /* Number of tokens in pList */ + int iCol; /* Index of column being renamed */ + Table *pTab; /* Table being ALTERed */ + const char *zOld; /* Old column name */ +}; + +#ifdef SQLITE_DEBUG +/* +** This function is only for debugging. It performs two tasks: +** +** 1. Checks that pointer pPtr does not already appear in the +** rename-token list. +** +** 2. Dereferences each pointer in the rename-token list. +** +** The second is most effective when debugging under valgrind or +** address-sanitizer or similar. If any of these pointers no longer +** point to valid objects, an exception is raised by the memory-checking +** tool. +** +** The point of this is to prevent comparisons of invalid pointer values. +** Even though this always seems to work, it is undefined according to the +** C standard. Example of undefined comparison: +** +** sqlite3_free(x); +** if( x==y ) ... +** +** Technically, as x no longer points into a valid object or to the byte +** following a valid object, it may not be used in comparison operations. +*/ +static void renameTokenCheckAll(Parse *pParse, const void *pPtr){ + assert( pParse==pParse->db->pParse ); + assert( pParse->db->mallocFailed==0 || pParse->nErr!=0 ); + if( pParse->nErr==0 ){ + const RenameToken *p; + u32 i = 1; + for(p=pParse->pRename; p; p=p->pNext){ + if( p->p ){ + assert( p->p!=pPtr ); + i += *(u8*)(p->p) | 1; + } + } + assert( i>0 ); + } +} +#else +# define renameTokenCheckAll(x,y) +#endif + +/* +** Remember that the parser tree element pPtr was created using +** the token pToken. +** +** In other words, construct a new RenameToken object and add it +** to the list of RenameToken objects currently being built up +** in pParse->pRename. +** +** The pPtr argument is returned so that this routine can be used +** with tail recursion in tokenExpr() routine, for a small performance +** improvement. +*/ +SQLITE_PRIVATE const void *sqlite3RenameTokenMap( + Parse *pParse, + const void *pPtr, + const Token *pToken +){ + RenameToken *pNew; + assert( pPtr || pParse->db->mallocFailed ); + renameTokenCheckAll(pParse, pPtr); + if( ALWAYS(pParse->eParseMode!=PARSE_MODE_UNMAP) ){ + pNew = sqlite3DbMallocZero(pParse->db, sizeof(RenameToken)); + if( pNew ){ + pNew->p = pPtr; + pNew->t = *pToken; + pNew->pNext = pParse->pRename; + pParse->pRename = pNew; + } + } + + return pPtr; +} + +/* +** It is assumed that there is already a RenameToken object associated +** with parse tree element pFrom. This function remaps the associated token +** to parse tree element pTo. +*/ +SQLITE_PRIVATE void sqlite3RenameTokenRemap(Parse *pParse, const void *pTo, const void *pFrom){ + RenameToken *p; + renameTokenCheckAll(pParse, pTo); + for(p=pParse->pRename; p; p=p->pNext){ + if( p->p==pFrom ){ + p->p = pTo; + break; + } + } +} + +/* +** Walker callback used by sqlite3RenameExprUnmap(). +*/ +static int renameUnmapExprCb(Walker *pWalker, Expr *pExpr){ + Parse *pParse = pWalker->pParse; + sqlite3RenameTokenRemap(pParse, 0, (const void*)pExpr); + if( ExprUseYTab(pExpr) ){ + sqlite3RenameTokenRemap(pParse, 0, (const void*)&pExpr->y.pTab); + } + return WRC_Continue; +} + +/* +** Iterate through the Select objects that are part of WITH clauses attached +** to select statement pSelect. +*/ +static void renameWalkWith(Walker *pWalker, Select *pSelect){ + With *pWith = pSelect->pWith; + if( pWith ){ + Parse *pParse = pWalker->pParse; + int i; + With *pCopy = 0; + assert( pWith->nCte>0 ); + if( (pWith->a[0].pSelect->selFlags & SF_Expanded)==0 ){ + /* Push a copy of the With object onto the with-stack. We use a copy + ** here as the original will be expanded and resolved (flags SF_Expanded + ** and SF_Resolved) below. And the parser code that uses the with-stack + ** fails if the Select objects on it have already been expanded and + ** resolved. */ + pCopy = sqlite3WithDup(pParse->db, pWith); + pCopy = sqlite3WithPush(pParse, pCopy, 1); + } + for(i=0; inCte; i++){ + Select *p = pWith->a[i].pSelect; + NameContext sNC; + memset(&sNC, 0, sizeof(sNC)); + sNC.pParse = pParse; + if( pCopy ) sqlite3SelectPrep(sNC.pParse, p, &sNC); + if( sNC.pParse->db->mallocFailed ) return; + sqlite3WalkSelect(pWalker, p); + sqlite3RenameExprlistUnmap(pParse, pWith->a[i].pCols); + } + if( pCopy && pParse->pWith==pCopy ){ + pParse->pWith = pCopy->pOuter; + } + } +} + +/* +** Unmap all tokens in the IdList object passed as the second argument. +*/ +static void unmapColumnIdlistNames( + Parse *pParse, + const IdList *pIdList +){ + int ii; + assert( pIdList!=0 ); + for(ii=0; iinId; ii++){ + sqlite3RenameTokenRemap(pParse, 0, (const void*)pIdList->a[ii].zName); + } +} + +/* +** Walker callback used by sqlite3RenameExprUnmap(). +*/ +static int renameUnmapSelectCb(Walker *pWalker, Select *p){ + Parse *pParse = pWalker->pParse; + int i; + if( pParse->nErr ) return WRC_Abort; + testcase( p->selFlags & SF_View ); + testcase( p->selFlags & SF_CopyCte ); + if( p->selFlags & (SF_View|SF_CopyCte) ){ + return WRC_Prune; + } + if( ALWAYS(p->pEList) ){ + ExprList *pList = p->pEList; + for(i=0; inExpr; i++){ + if( pList->a[i].zEName && pList->a[i].fg.eEName==ENAME_NAME ){ + sqlite3RenameTokenRemap(pParse, 0, (void*)pList->a[i].zEName); + } + } + } + if( ALWAYS(p->pSrc) ){ /* Every Select as a SrcList, even if it is empty */ + SrcList *pSrc = p->pSrc; + for(i=0; inSrc; i++){ + sqlite3RenameTokenRemap(pParse, 0, (void*)pSrc->a[i].zName); + if( pSrc->a[i].fg.isUsing==0 ){ + sqlite3WalkExpr(pWalker, pSrc->a[i].u3.pOn); + }else{ + unmapColumnIdlistNames(pParse, pSrc->a[i].u3.pUsing); + } + } + } + + renameWalkWith(pWalker, p); + return WRC_Continue; +} + +/* +** Remove all nodes that are part of expression pExpr from the rename list. +*/ +SQLITE_PRIVATE void sqlite3RenameExprUnmap(Parse *pParse, Expr *pExpr){ + u8 eMode = pParse->eParseMode; + Walker sWalker; + memset(&sWalker, 0, sizeof(Walker)); + sWalker.pParse = pParse; + sWalker.xExprCallback = renameUnmapExprCb; + sWalker.xSelectCallback = renameUnmapSelectCb; + pParse->eParseMode = PARSE_MODE_UNMAP; + sqlite3WalkExpr(&sWalker, pExpr); + pParse->eParseMode = eMode; +} + +/* +** Remove all nodes that are part of expression-list pEList from the +** rename list. +*/ +SQLITE_PRIVATE void sqlite3RenameExprlistUnmap(Parse *pParse, ExprList *pEList){ + if( pEList ){ + int i; + Walker sWalker; + memset(&sWalker, 0, sizeof(Walker)); + sWalker.pParse = pParse; + sWalker.xExprCallback = renameUnmapExprCb; + sqlite3WalkExprList(&sWalker, pEList); + for(i=0; inExpr; i++){ + if( ALWAYS(pEList->a[i].fg.eEName==ENAME_NAME) ){ + sqlite3RenameTokenRemap(pParse, 0, (void*)pEList->a[i].zEName); + } + } + } +} + +/* +** Free the list of RenameToken objects given in the second argument +*/ +static void renameTokenFree(sqlite3 *db, RenameToken *pToken){ + RenameToken *pNext; + RenameToken *p; + for(p=pToken; p; p=pNext){ + pNext = p->pNext; + sqlite3DbFree(db, p); + } +} + +/* +** Search the Parse object passed as the first argument for a RenameToken +** object associated with parse tree element pPtr. If found, return a pointer +** to it. Otherwise, return NULL. +** +** If the second argument passed to this function is not NULL and a matching +** RenameToken object is found, remove it from the Parse object and add it to +** the list maintained by the RenameCtx object. +*/ +static RenameToken *renameTokenFind( + Parse *pParse, + struct RenameCtx *pCtx, + const void *pPtr +){ + RenameToken **pp; + if( NEVER(pPtr==0) ){ + return 0; + } + for(pp=&pParse->pRename; (*pp); pp=&(*pp)->pNext){ + if( (*pp)->p==pPtr ){ + RenameToken *pToken = *pp; + if( pCtx ){ + *pp = pToken->pNext; + pToken->pNext = pCtx->pList; + pCtx->pList = pToken; + pCtx->nList++; + } + return pToken; + } + } + return 0; +} + +/* +** This is a Walker select callback. It does nothing. It is only required +** because without a dummy callback, sqlite3WalkExpr() and similar do not +** descend into sub-select statements. +*/ +static int renameColumnSelectCb(Walker *pWalker, Select *p){ + if( p->selFlags & (SF_View|SF_CopyCte) ){ + testcase( p->selFlags & SF_View ); + testcase( p->selFlags & SF_CopyCte ); + return WRC_Prune; + } + renameWalkWith(pWalker, p); + return WRC_Continue; +} + +/* +** This is a Walker expression callback. +** +** For every TK_COLUMN node in the expression tree, search to see +** if the column being references is the column being renamed by an +** ALTER TABLE statement. If it is, then attach its associated +** RenameToken object to the list of RenameToken objects being +** constructed in RenameCtx object at pWalker->u.pRename. +*/ +static int renameColumnExprCb(Walker *pWalker, Expr *pExpr){ + RenameCtx *p = pWalker->u.pRename; + if( pExpr->op==TK_TRIGGER + && pExpr->iColumn==p->iCol + && pWalker->pParse->pTriggerTab==p->pTab + ){ + renameTokenFind(pWalker->pParse, p, (void*)pExpr); + }else if( pExpr->op==TK_COLUMN + && pExpr->iColumn==p->iCol + && ALWAYS(ExprUseYTab(pExpr)) + && p->pTab==pExpr->y.pTab + ){ + renameTokenFind(pWalker->pParse, p, (void*)pExpr); + } + return WRC_Continue; +} + +/* +** The RenameCtx contains a list of tokens that reference a column that +** is being renamed by an ALTER TABLE statement. Return the "last" +** RenameToken in the RenameCtx and remove that RenameToken from the +** RenameContext. "Last" means the last RenameToken encountered when +** the input SQL is parsed from left to right. Repeated calls to this routine +** return all column name tokens in the order that they are encountered +** in the SQL statement. +*/ +static RenameToken *renameColumnTokenNext(RenameCtx *pCtx){ + RenameToken *pBest = pCtx->pList; + RenameToken *pToken; + RenameToken **pp; + + for(pToken=pBest->pNext; pToken; pToken=pToken->pNext){ + if( pToken->t.z>pBest->t.z ) pBest = pToken; + } + for(pp=&pCtx->pList; *pp!=pBest; pp=&(*pp)->pNext); + *pp = pBest->pNext; + + return pBest; +} + +/* +** An error occurred while parsing or otherwise processing a database +** object (either pParse->pNewTable, pNewIndex or pNewTrigger) as part of an +** ALTER TABLE RENAME COLUMN program. The error message emitted by the +** sub-routine is currently stored in pParse->zErrMsg. This function +** adds context to the error message and then stores it in pCtx. +*/ +static void renameColumnParseError( + sqlite3_context *pCtx, + const char *zWhen, + sqlite3_value *pType, + sqlite3_value *pObject, + Parse *pParse +){ + const char *zT = (const char*)sqlite3_value_text(pType); + const char *zN = (const char*)sqlite3_value_text(pObject); + char *zErr; + + zErr = sqlite3MPrintf(pParse->db, "error in %s %s%s%s: %s", + zT, zN, (zWhen[0] ? " " : ""), zWhen, + pParse->zErrMsg + ); + sqlite3_result_error(pCtx, zErr, -1); + sqlite3DbFree(pParse->db, zErr); +} + +/* +** For each name in the the expression-list pEList (i.e. each +** pEList->a[i].zName) that matches the string in zOld, extract the +** corresponding rename-token from Parse object pParse and add it +** to the RenameCtx pCtx. +*/ +static void renameColumnElistNames( + Parse *pParse, + RenameCtx *pCtx, + const ExprList *pEList, + const char *zOld +){ + if( pEList ){ + int i; + for(i=0; inExpr; i++){ + const char *zName = pEList->a[i].zEName; + if( ALWAYS(pEList->a[i].fg.eEName==ENAME_NAME) + && ALWAYS(zName!=0) + && 0==sqlite3_stricmp(zName, zOld) + ){ + renameTokenFind(pParse, pCtx, (const void*)zName); + } + } + } +} + +/* +** For each name in the the id-list pIdList (i.e. each pIdList->a[i].zName) +** that matches the string in zOld, extract the corresponding rename-token +** from Parse object pParse and add it to the RenameCtx pCtx. +*/ +static void renameColumnIdlistNames( + Parse *pParse, + RenameCtx *pCtx, + const IdList *pIdList, + const char *zOld +){ + if( pIdList ){ + int i; + for(i=0; inId; i++){ + const char *zName = pIdList->a[i].zName; + if( 0==sqlite3_stricmp(zName, zOld) ){ + renameTokenFind(pParse, pCtx, (const void*)zName); + } + } + } +} + + +/* +** Parse the SQL statement zSql using Parse object (*p). The Parse object +** is initialized by this function before it is used. +*/ +static int renameParseSql( + Parse *p, /* Memory to use for Parse object */ + const char *zDb, /* Name of schema SQL belongs to */ + sqlite3 *db, /* Database handle */ + const char *zSql, /* SQL to parse */ + int bTemp /* True if SQL is from temp schema */ +){ + int rc; + + sqlite3ParseObjectInit(p, db); + if( zSql==0 ){ + return SQLITE_NOMEM; + } + if( sqlite3StrNICmp(zSql,"CREATE ",7)!=0 ){ + return SQLITE_CORRUPT_BKPT; + } + db->init.iDb = bTemp ? 1 : sqlite3FindDbName(db, zDb); + p->eParseMode = PARSE_MODE_RENAME; + p->db = db; + p->nQueryLoop = 1; + rc = sqlite3RunParser(p, zSql); + if( db->mallocFailed ) rc = SQLITE_NOMEM; + if( rc==SQLITE_OK + && NEVER(p->pNewTable==0 && p->pNewIndex==0 && p->pNewTrigger==0) + ){ + rc = SQLITE_CORRUPT_BKPT; + } + +#ifdef SQLITE_DEBUG + /* Ensure that all mappings in the Parse.pRename list really do map to + ** a part of the input string. */ + if( rc==SQLITE_OK ){ + int nSql = sqlite3Strlen30(zSql); + RenameToken *pToken; + for(pToken=p->pRename; pToken; pToken=pToken->pNext){ + assert( pToken->t.z>=zSql && &pToken->t.z[pToken->t.n]<=&zSql[nSql] ); + } + } +#endif + + db->init.iDb = 0; + return rc; +} + +/* +** This function edits SQL statement zSql, replacing each token identified +** by the linked list pRename with the text of zNew. If argument bQuote is +** true, then zNew is always quoted first. If no error occurs, the result +** is loaded into context object pCtx as the result. +** +** Or, if an error occurs (i.e. an OOM condition), an error is left in +** pCtx and an SQLite error code returned. +*/ +static int renameEditSql( + sqlite3_context *pCtx, /* Return result here */ + RenameCtx *pRename, /* Rename context */ + const char *zSql, /* SQL statement to edit */ + const char *zNew, /* New token text */ + int bQuote /* True to always quote token */ +){ + i64 nNew = sqlite3Strlen30(zNew); + i64 nSql = sqlite3Strlen30(zSql); + sqlite3 *db = sqlite3_context_db_handle(pCtx); + int rc = SQLITE_OK; + char *zQuot = 0; + char *zOut; + i64 nQuot = 0; + char *zBuf1 = 0; + char *zBuf2 = 0; + + if( zNew ){ + /* Set zQuot to point to a buffer containing a quoted copy of the + ** identifier zNew. If the corresponding identifier in the original + ** ALTER TABLE statement was quoted (bQuote==1), then set zNew to + ** point to zQuot so that all substitutions are made using the + ** quoted version of the new column name. */ + zQuot = sqlite3MPrintf(db, "\"%w\" ", zNew); + if( zQuot==0 ){ + return SQLITE_NOMEM; + }else{ + nQuot = sqlite3Strlen30(zQuot)-1; + } + + assert( nQuot>=nNew ); + zOut = sqlite3DbMallocZero(db, nSql + pRename->nList*nQuot + 1); + }else{ + zOut = (char*)sqlite3DbMallocZero(db, (nSql*2+1) * 3); + if( zOut ){ + zBuf1 = &zOut[nSql*2+1]; + zBuf2 = &zOut[nSql*4+2]; + } + } + + /* At this point pRename->pList contains a list of RenameToken objects + ** corresponding to all tokens in the input SQL that must be replaced + ** with the new column name, or with single-quoted versions of themselves. + ** All that remains is to construct and return the edited SQL string. */ + if( zOut ){ + int nOut = nSql; + memcpy(zOut, zSql, nSql); + while( pRename->pList ){ + int iOff; /* Offset of token to replace in zOut */ + u32 nReplace; + const char *zReplace; + RenameToken *pBest = renameColumnTokenNext(pRename); + + if( zNew ){ + if( bQuote==0 && sqlite3IsIdChar(*pBest->t.z) ){ + nReplace = nNew; + zReplace = zNew; + }else{ + nReplace = nQuot; + zReplace = zQuot; + if( pBest->t.z[pBest->t.n]=='"' ) nReplace++; + } + }else{ + /* Dequote the double-quoted token. Then requote it again, this time + ** using single quotes. If the character immediately following the + ** original token within the input SQL was a single quote ('), then + ** add another space after the new, single-quoted version of the + ** token. This is so that (SELECT "string"'alias') maps to + ** (SELECT 'string' 'alias'), and not (SELECT 'string''alias'). */ + memcpy(zBuf1, pBest->t.z, pBest->t.n); + zBuf1[pBest->t.n] = 0; + sqlite3Dequote(zBuf1); + sqlite3_snprintf(nSql*2, zBuf2, "%Q%s", zBuf1, + pBest->t.z[pBest->t.n]=='\'' ? " " : "" + ); + zReplace = zBuf2; + nReplace = sqlite3Strlen30(zReplace); + } + + iOff = pBest->t.z - zSql; + if( pBest->t.n!=nReplace ){ + memmove(&zOut[iOff + nReplace], &zOut[iOff + pBest->t.n], + nOut - (iOff + pBest->t.n) + ); + nOut += nReplace - pBest->t.n; + zOut[nOut] = '\0'; + } + memcpy(&zOut[iOff], zReplace, nReplace); + sqlite3DbFree(db, pBest); + } + + sqlite3_result_text(pCtx, zOut, -1, SQLITE_TRANSIENT); + sqlite3DbFree(db, zOut); + }else{ + rc = SQLITE_NOMEM; + } + + sqlite3_free(zQuot); + return rc; +} + +/* +** Set all pEList->a[].fg.eEName fields in the expression-list to val. +*/ +static void renameSetENames(ExprList *pEList, int val){ + if( pEList ){ + int i; + for(i=0; inExpr; i++){ + assert( val==ENAME_NAME || pEList->a[i].fg.eEName==ENAME_NAME ); + pEList->a[i].fg.eEName = val; + } + } +} + +/* +** Resolve all symbols in the trigger at pParse->pNewTrigger, assuming +** it was read from the schema of database zDb. Return SQLITE_OK if +** successful. Otherwise, return an SQLite error code and leave an error +** message in the Parse object. +*/ +static int renameResolveTrigger(Parse *pParse){ + sqlite3 *db = pParse->db; + Trigger *pNew = pParse->pNewTrigger; + TriggerStep *pStep; + NameContext sNC; + int rc = SQLITE_OK; + + memset(&sNC, 0, sizeof(sNC)); + sNC.pParse = pParse; + assert( pNew->pTabSchema ); + pParse->pTriggerTab = sqlite3FindTable(db, pNew->table, + db->aDb[sqlite3SchemaToIndex(db, pNew->pTabSchema)].zDbSName + ); + pParse->eTriggerOp = pNew->op; + /* ALWAYS() because if the table of the trigger does not exist, the + ** error would have been hit before this point */ + if( ALWAYS(pParse->pTriggerTab) ){ + rc = sqlite3ViewGetColumnNames(pParse, pParse->pTriggerTab); + } + + /* Resolve symbols in WHEN clause */ + if( rc==SQLITE_OK && pNew->pWhen ){ + rc = sqlite3ResolveExprNames(&sNC, pNew->pWhen); + } + + for(pStep=pNew->step_list; rc==SQLITE_OK && pStep; pStep=pStep->pNext){ + if( pStep->pSelect ){ + sqlite3SelectPrep(pParse, pStep->pSelect, &sNC); + if( pParse->nErr ) rc = pParse->rc; + } + if( rc==SQLITE_OK && pStep->zTarget ){ + SrcList *pSrc = sqlite3TriggerStepSrc(pParse, pStep); + if( pSrc ){ + Select *pSel = sqlite3SelectNew( + pParse, pStep->pExprList, pSrc, 0, 0, 0, 0, 0, 0 + ); + if( pSel==0 ){ + pStep->pExprList = 0; + pSrc = 0; + rc = SQLITE_NOMEM; + }else{ + /* pStep->pExprList contains an expression-list used for an UPDATE + ** statement. So the a[].zEName values are the RHS of the + ** "= " clauses of the UPDATE statement. So, before + ** running SelectPrep(), change all the eEName values in + ** pStep->pExprList to ENAME_SPAN (from their current value of + ** ENAME_NAME). This is to prevent any ids in ON() clauses that are + ** part of pSrc from being incorrectly resolved against the + ** a[].zEName values as if they were column aliases. */ + renameSetENames(pStep->pExprList, ENAME_SPAN); + sqlite3SelectPrep(pParse, pSel, 0); + renameSetENames(pStep->pExprList, ENAME_NAME); + rc = pParse->nErr ? SQLITE_ERROR : SQLITE_OK; + assert( pStep->pExprList==0 || pStep->pExprList==pSel->pEList ); + assert( pSrc==pSel->pSrc ); + if( pStep->pExprList ) pSel->pEList = 0; + pSel->pSrc = 0; + sqlite3SelectDelete(db, pSel); + } + if( pStep->pFrom ){ + int i; + for(i=0; ipFrom->nSrc && rc==SQLITE_OK; i++){ + SrcItem *p = &pStep->pFrom->a[i]; + if( p->pSelect ){ + sqlite3SelectPrep(pParse, p->pSelect, 0); + } + } + } + + if( db->mallocFailed ){ + rc = SQLITE_NOMEM; + } + sNC.pSrcList = pSrc; + if( rc==SQLITE_OK && pStep->pWhere ){ + rc = sqlite3ResolveExprNames(&sNC, pStep->pWhere); + } + if( rc==SQLITE_OK ){ + rc = sqlite3ResolveExprListNames(&sNC, pStep->pExprList); + } + assert( !pStep->pUpsert || (!pStep->pWhere && !pStep->pExprList) ); + if( pStep->pUpsert && rc==SQLITE_OK ){ + Upsert *pUpsert = pStep->pUpsert; + pUpsert->pUpsertSrc = pSrc; + sNC.uNC.pUpsert = pUpsert; + sNC.ncFlags = NC_UUpsert; + rc = sqlite3ResolveExprListNames(&sNC, pUpsert->pUpsertTarget); + if( rc==SQLITE_OK ){ + ExprList *pUpsertSet = pUpsert->pUpsertSet; + rc = sqlite3ResolveExprListNames(&sNC, pUpsertSet); + } + if( rc==SQLITE_OK ){ + rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertWhere); + } + if( rc==SQLITE_OK ){ + rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertTargetWhere); + } + sNC.ncFlags = 0; + } + sNC.pSrcList = 0; + sqlite3SrcListDelete(db, pSrc); + }else{ + rc = SQLITE_NOMEM; + } + } + } + return rc; +} + +/* +** Invoke sqlite3WalkExpr() or sqlite3WalkSelect() on all Select or Expr +** objects that are part of the trigger passed as the second argument. +*/ +static void renameWalkTrigger(Walker *pWalker, Trigger *pTrigger){ + TriggerStep *pStep; + + /* Find tokens to edit in WHEN clause */ + sqlite3WalkExpr(pWalker, pTrigger->pWhen); + + /* Find tokens to edit in trigger steps */ + for(pStep=pTrigger->step_list; pStep; pStep=pStep->pNext){ + sqlite3WalkSelect(pWalker, pStep->pSelect); + sqlite3WalkExpr(pWalker, pStep->pWhere); + sqlite3WalkExprList(pWalker, pStep->pExprList); + if( pStep->pUpsert ){ + Upsert *pUpsert = pStep->pUpsert; + sqlite3WalkExprList(pWalker, pUpsert->pUpsertTarget); + sqlite3WalkExprList(pWalker, pUpsert->pUpsertSet); + sqlite3WalkExpr(pWalker, pUpsert->pUpsertWhere); + sqlite3WalkExpr(pWalker, pUpsert->pUpsertTargetWhere); + } + if( pStep->pFrom ){ + int i; + for(i=0; ipFrom->nSrc; i++){ + sqlite3WalkSelect(pWalker, pStep->pFrom->a[i].pSelect); + } + } + } +} + +/* +** Free the contents of Parse object (*pParse). Do not free the memory +** occupied by the Parse object itself. +*/ +static void renameParseCleanup(Parse *pParse){ + sqlite3 *db = pParse->db; + Index *pIdx; + if( pParse->pVdbe ){ + sqlite3VdbeFinalize(pParse->pVdbe); + } + sqlite3DeleteTable(db, pParse->pNewTable); + while( (pIdx = pParse->pNewIndex)!=0 ){ + pParse->pNewIndex = pIdx->pNext; + sqlite3FreeIndex(db, pIdx); + } + sqlite3DeleteTrigger(db, pParse->pNewTrigger); + sqlite3DbFree(db, pParse->zErrMsg); + renameTokenFree(db, pParse->pRename); + sqlite3ParseObjectReset(pParse); +} + +/* +** SQL function: +** +** sqlite_rename_column(SQL,TYPE,OBJ,DB,TABLE,COL,NEWNAME,QUOTE,TEMP) +** +** 0. zSql: SQL statement to rewrite +** 1. type: Type of object ("table", "view" etc.) +** 2. object: Name of object +** 3. Database: Database name (e.g. "main") +** 4. Table: Table name +** 5. iCol: Index of column to rename +** 6. zNew: New column name +** 7. bQuote: Non-zero if the new column name should be quoted. +** 8. bTemp: True if zSql comes from temp schema +** +** Do a column rename operation on the CREATE statement given in zSql. +** The iCol-th column (left-most is 0) of table zTable is renamed from zCol +** into zNew. The name should be quoted if bQuote is true. +** +** This function is used internally by the ALTER TABLE RENAME COLUMN command. +** It is only accessible to SQL created using sqlite3NestedParse(). It is +** not reachable from ordinary SQL passed into sqlite3_prepare() unless the +** SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test setting is enabled. +*/ +static void renameColumnFunc( + sqlite3_context *context, + int NotUsed, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + RenameCtx sCtx; + const char *zSql = (const char*)sqlite3_value_text(argv[0]); + const char *zDb = (const char*)sqlite3_value_text(argv[3]); + const char *zTable = (const char*)sqlite3_value_text(argv[4]); + int iCol = sqlite3_value_int(argv[5]); + const char *zNew = (const char*)sqlite3_value_text(argv[6]); + int bQuote = sqlite3_value_int(argv[7]); + int bTemp = sqlite3_value_int(argv[8]); + const char *zOld; + int rc; + Parse sParse; + Walker sWalker; + Index *pIdx; + int i; + Table *pTab; +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth = db->xAuth; +#endif + + UNUSED_PARAMETER(NotUsed); + if( zSql==0 ) return; + if( zTable==0 ) return; + if( zNew==0 ) return; + if( iCol<0 ) return; + sqlite3BtreeEnterAll(db); + pTab = sqlite3FindTable(db, zTable, zDb); + if( pTab==0 || iCol>=pTab->nCol ){ + sqlite3BtreeLeaveAll(db); + return; + } + zOld = pTab->aCol[iCol].zCnName; + memset(&sCtx, 0, sizeof(sCtx)); + sCtx.iCol = ((iCol==pTab->iPKey) ? -1 : iCol); + +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = 0; +#endif + rc = renameParseSql(&sParse, zDb, db, zSql, bTemp); + + /* Find tokens that need to be replaced. */ + memset(&sWalker, 0, sizeof(Walker)); + sWalker.pParse = &sParse; + sWalker.xExprCallback = renameColumnExprCb; + sWalker.xSelectCallback = renameColumnSelectCb; + sWalker.u.pRename = &sCtx; + + sCtx.pTab = pTab; + if( rc!=SQLITE_OK ) goto renameColumnFunc_done; + if( sParse.pNewTable ){ + if( IsView(sParse.pNewTable) ){ + Select *pSelect = sParse.pNewTable->u.view.pSelect; + pSelect->selFlags &= ~SF_View; + sParse.rc = SQLITE_OK; + sqlite3SelectPrep(&sParse, pSelect, 0); + rc = (db->mallocFailed ? SQLITE_NOMEM : sParse.rc); + if( rc==SQLITE_OK ){ + sqlite3WalkSelect(&sWalker, pSelect); + } + if( rc!=SQLITE_OK ) goto renameColumnFunc_done; + }else if( IsOrdinaryTable(sParse.pNewTable) ){ + /* A regular table */ + int bFKOnly = sqlite3_stricmp(zTable, sParse.pNewTable->zName); + FKey *pFKey; + sCtx.pTab = sParse.pNewTable; + if( bFKOnly==0 ){ + if( iColnCol ){ + renameTokenFind( + &sParse, &sCtx, (void*)sParse.pNewTable->aCol[iCol].zCnName + ); + } + if( sCtx.iCol<0 ){ + renameTokenFind(&sParse, &sCtx, (void*)&sParse.pNewTable->iPKey); + } + sqlite3WalkExprList(&sWalker, sParse.pNewTable->pCheck); + for(pIdx=sParse.pNewTable->pIndex; pIdx; pIdx=pIdx->pNext){ + sqlite3WalkExprList(&sWalker, pIdx->aColExpr); + } + for(pIdx=sParse.pNewIndex; pIdx; pIdx=pIdx->pNext){ + sqlite3WalkExprList(&sWalker, pIdx->aColExpr); + } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + for(i=0; inCol; i++){ + Expr *pExpr = sqlite3ColumnExpr(sParse.pNewTable, + &sParse.pNewTable->aCol[i]); + sqlite3WalkExpr(&sWalker, pExpr); + } +#endif + } + + assert( IsOrdinaryTable(sParse.pNewTable) ); + for(pFKey=sParse.pNewTable->u.tab.pFKey; pFKey; pFKey=pFKey->pNextFrom){ + for(i=0; inCol; i++){ + if( bFKOnly==0 && pFKey->aCol[i].iFrom==iCol ){ + renameTokenFind(&sParse, &sCtx, (void*)&pFKey->aCol[i]); + } + if( 0==sqlite3_stricmp(pFKey->zTo, zTable) + && 0==sqlite3_stricmp(pFKey->aCol[i].zCol, zOld) + ){ + renameTokenFind(&sParse, &sCtx, (void*)pFKey->aCol[i].zCol); + } + } + } + } + }else if( sParse.pNewIndex ){ + sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr); + sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere); + }else{ + /* A trigger */ + TriggerStep *pStep; + rc = renameResolveTrigger(&sParse); + if( rc!=SQLITE_OK ) goto renameColumnFunc_done; + + for(pStep=sParse.pNewTrigger->step_list; pStep; pStep=pStep->pNext){ + if( pStep->zTarget ){ + Table *pTarget = sqlite3LocateTable(&sParse, 0, pStep->zTarget, zDb); + if( pTarget==pTab ){ + if( pStep->pUpsert ){ + ExprList *pUpsertSet = pStep->pUpsert->pUpsertSet; + renameColumnElistNames(&sParse, &sCtx, pUpsertSet, zOld); + } + renameColumnIdlistNames(&sParse, &sCtx, pStep->pIdList, zOld); + renameColumnElistNames(&sParse, &sCtx, pStep->pExprList, zOld); + } + } + } + + + /* Find tokens to edit in UPDATE OF clause */ + if( sParse.pTriggerTab==pTab ){ + renameColumnIdlistNames(&sParse, &sCtx,sParse.pNewTrigger->pColumns,zOld); + } + + /* Find tokens to edit in various expressions and selects */ + renameWalkTrigger(&sWalker, sParse.pNewTrigger); + } + + assert( rc==SQLITE_OK ); + rc = renameEditSql(context, &sCtx, zSql, zNew, bQuote); + +renameColumnFunc_done: + if( rc!=SQLITE_OK ){ + if( rc==SQLITE_ERROR && sqlite3WritableSchema(db) ){ + sqlite3_result_value(context, argv[0]); + }else if( sParse.zErrMsg ){ + renameColumnParseError(context, "", argv[1], argv[2], &sParse); + }else{ + sqlite3_result_error_code(context, rc); + } + } + + renameParseCleanup(&sParse); + renameTokenFree(db, sCtx.pList); +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = xAuth; +#endif + sqlite3BtreeLeaveAll(db); +} + +/* +** Walker expression callback used by "RENAME TABLE". +*/ +static int renameTableExprCb(Walker *pWalker, Expr *pExpr){ + RenameCtx *p = pWalker->u.pRename; + if( pExpr->op==TK_COLUMN + && ALWAYS(ExprUseYTab(pExpr)) + && p->pTab==pExpr->y.pTab + ){ + renameTokenFind(pWalker->pParse, p, (void*)&pExpr->y.pTab); + } + return WRC_Continue; +} + +/* +** Walker select callback used by "RENAME TABLE". +*/ +static int renameTableSelectCb(Walker *pWalker, Select *pSelect){ + int i; + RenameCtx *p = pWalker->u.pRename; + SrcList *pSrc = pSelect->pSrc; + if( pSelect->selFlags & (SF_View|SF_CopyCte) ){ + testcase( pSelect->selFlags & SF_View ); + testcase( pSelect->selFlags & SF_CopyCte ); + return WRC_Prune; + } + if( NEVER(pSrc==0) ){ + assert( pWalker->pParse->db->mallocFailed ); + return WRC_Abort; + } + for(i=0; inSrc; i++){ + SrcItem *pItem = &pSrc->a[i]; + if( pItem->pTab==p->pTab ){ + renameTokenFind(pWalker->pParse, p, pItem->zName); + } + } + renameWalkWith(pWalker, pSelect); + + return WRC_Continue; +} + + +/* +** This C function implements an SQL user function that is used by SQL code +** generated by the ALTER TABLE ... RENAME command to modify the definition +** of any foreign key constraints that use the table being renamed as the +** parent table. It is passed three arguments: +** +** 0: The database containing the table being renamed. +** 1. type: Type of object ("table", "view" etc.) +** 2. object: Name of object +** 3: The complete text of the schema statement being modified, +** 4: The old name of the table being renamed, and +** 5: The new name of the table being renamed. +** 6: True if the schema statement comes from the temp db. +** +** It returns the new schema statement. For example: +** +** sqlite_rename_table('main', 'CREATE TABLE t1(a REFERENCES t2)','t2','t3',0) +** -> 'CREATE TABLE t1(a REFERENCES t3)' +*/ +static void renameTableFunc( + sqlite3_context *context, + int NotUsed, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + const char *zDb = (const char*)sqlite3_value_text(argv[0]); + const char *zInput = (const char*)sqlite3_value_text(argv[3]); + const char *zOld = (const char*)sqlite3_value_text(argv[4]); + const char *zNew = (const char*)sqlite3_value_text(argv[5]); + int bTemp = sqlite3_value_int(argv[6]); + UNUSED_PARAMETER(NotUsed); + + if( zInput && zOld && zNew ){ + Parse sParse; + int rc; + int bQuote = 1; + RenameCtx sCtx; + Walker sWalker; + +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth = db->xAuth; + db->xAuth = 0; +#endif + + sqlite3BtreeEnterAll(db); + + memset(&sCtx, 0, sizeof(RenameCtx)); + sCtx.pTab = sqlite3FindTable(db, zOld, zDb); + memset(&sWalker, 0, sizeof(Walker)); + sWalker.pParse = &sParse; + sWalker.xExprCallback = renameTableExprCb; + sWalker.xSelectCallback = renameTableSelectCb; + sWalker.u.pRename = &sCtx; + + rc = renameParseSql(&sParse, zDb, db, zInput, bTemp); + + if( rc==SQLITE_OK ){ + int isLegacy = (db->flags & SQLITE_LegacyAlter); + if( sParse.pNewTable ){ + Table *pTab = sParse.pNewTable; + + if( IsView(pTab) ){ + if( isLegacy==0 ){ + Select *pSelect = pTab->u.view.pSelect; + NameContext sNC; + memset(&sNC, 0, sizeof(sNC)); + sNC.pParse = &sParse; + + assert( pSelect->selFlags & SF_View ); + pSelect->selFlags &= ~SF_View; + sqlite3SelectPrep(&sParse, pTab->u.view.pSelect, &sNC); + if( sParse.nErr ){ + rc = sParse.rc; + }else{ + sqlite3WalkSelect(&sWalker, pTab->u.view.pSelect); + } + } + }else{ + /* Modify any FK definitions to point to the new table. */ +#ifndef SQLITE_OMIT_FOREIGN_KEY + if( (isLegacy==0 || (db->flags & SQLITE_ForeignKeys)) + && !IsVirtual(pTab) + ){ + FKey *pFKey; + assert( IsOrdinaryTable(pTab) ); + for(pFKey=pTab->u.tab.pFKey; pFKey; pFKey=pFKey->pNextFrom){ + if( sqlite3_stricmp(pFKey->zTo, zOld)==0 ){ + renameTokenFind(&sParse, &sCtx, (void*)pFKey->zTo); + } + } + } +#endif + + /* If this is the table being altered, fix any table refs in CHECK + ** expressions. Also update the name that appears right after the + ** "CREATE [VIRTUAL] TABLE" bit. */ + if( sqlite3_stricmp(zOld, pTab->zName)==0 ){ + sCtx.pTab = pTab; + if( isLegacy==0 ){ + sqlite3WalkExprList(&sWalker, pTab->pCheck); + } + renameTokenFind(&sParse, &sCtx, pTab->zName); + } + } + } + + else if( sParse.pNewIndex ){ + renameTokenFind(&sParse, &sCtx, sParse.pNewIndex->zName); + if( isLegacy==0 ){ + sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere); + } + } + +#ifndef SQLITE_OMIT_TRIGGER + else{ + Trigger *pTrigger = sParse.pNewTrigger; + TriggerStep *pStep; + if( 0==sqlite3_stricmp(sParse.pNewTrigger->table, zOld) + && sCtx.pTab->pSchema==pTrigger->pTabSchema + ){ + renameTokenFind(&sParse, &sCtx, sParse.pNewTrigger->table); + } + + if( isLegacy==0 ){ + rc = renameResolveTrigger(&sParse); + if( rc==SQLITE_OK ){ + renameWalkTrigger(&sWalker, pTrigger); + for(pStep=pTrigger->step_list; pStep; pStep=pStep->pNext){ + if( pStep->zTarget && 0==sqlite3_stricmp(pStep->zTarget, zOld) ){ + renameTokenFind(&sParse, &sCtx, pStep->zTarget); + } + if( pStep->pFrom ){ + int i; + for(i=0; ipFrom->nSrc; i++){ + SrcItem *pItem = &pStep->pFrom->a[i]; + if( 0==sqlite3_stricmp(pItem->zName, zOld) ){ + renameTokenFind(&sParse, &sCtx, pItem->zName); + } + } + } + } + } + } + } +#endif + } + + if( rc==SQLITE_OK ){ + rc = renameEditSql(context, &sCtx, zInput, zNew, bQuote); + } + if( rc!=SQLITE_OK ){ + if( rc==SQLITE_ERROR && sqlite3WritableSchema(db) ){ + sqlite3_result_value(context, argv[3]); + }else if( sParse.zErrMsg ){ + renameColumnParseError(context, "", argv[1], argv[2], &sParse); + }else{ + sqlite3_result_error_code(context, rc); + } + } + + renameParseCleanup(&sParse); + renameTokenFree(db, sCtx.pList); + sqlite3BtreeLeaveAll(db); +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = xAuth; +#endif + } + + return; +} + +static int renameQuotefixExprCb(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_STRING && (pExpr->flags & EP_DblQuoted) ){ + renameTokenFind(pWalker->pParse, pWalker->u.pRename, (const void*)pExpr); + } + return WRC_Continue; +} + +/* SQL function: sqlite_rename_quotefix(DB,SQL) +** +** Rewrite the DDL statement "SQL" so that any string literals that use +** double-quotes use single quotes instead. +** +** Two arguments must be passed: +** +** 0: Database name ("main", "temp" etc.). +** 1: SQL statement to edit. +** +** The returned value is the modified SQL statement. For example, given +** the database schema: +** +** CREATE TABLE t1(a, b, c); +** +** SELECT sqlite_rename_quotefix('main', +** 'CREATE VIEW v1 AS SELECT "a", "string" FROM t1' +** ); +** +** returns the string: +** +** CREATE VIEW v1 AS SELECT "a", 'string' FROM t1 +** +** If there is a error in the input SQL, then raise an error, except +** if PRAGMA writable_schema=ON, then just return the input string +** unmodified following an error. +*/ +static void renameQuotefixFunc( + sqlite3_context *context, + int NotUsed, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + char const *zDb = (const char*)sqlite3_value_text(argv[0]); + char const *zInput = (const char*)sqlite3_value_text(argv[1]); + +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth = db->xAuth; + db->xAuth = 0; +#endif + + sqlite3BtreeEnterAll(db); + + UNUSED_PARAMETER(NotUsed); + if( zDb && zInput ){ + int rc; + Parse sParse; + rc = renameParseSql(&sParse, zDb, db, zInput, 0); + + if( rc==SQLITE_OK ){ + RenameCtx sCtx; + Walker sWalker; + + /* Walker to find tokens that need to be replaced. */ + memset(&sCtx, 0, sizeof(RenameCtx)); + memset(&sWalker, 0, sizeof(Walker)); + sWalker.pParse = &sParse; + sWalker.xExprCallback = renameQuotefixExprCb; + sWalker.xSelectCallback = renameColumnSelectCb; + sWalker.u.pRename = &sCtx; + + if( sParse.pNewTable ){ + if( IsView(sParse.pNewTable) ){ + Select *pSelect = sParse.pNewTable->u.view.pSelect; + pSelect->selFlags &= ~SF_View; + sParse.rc = SQLITE_OK; + sqlite3SelectPrep(&sParse, pSelect, 0); + rc = (db->mallocFailed ? SQLITE_NOMEM : sParse.rc); + if( rc==SQLITE_OK ){ + sqlite3WalkSelect(&sWalker, pSelect); + } + }else{ + int i; + sqlite3WalkExprList(&sWalker, sParse.pNewTable->pCheck); +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + for(i=0; inCol; i++){ + sqlite3WalkExpr(&sWalker, + sqlite3ColumnExpr(sParse.pNewTable, + &sParse.pNewTable->aCol[i])); + } +#endif /* SQLITE_OMIT_GENERATED_COLUMNS */ + } + }else if( sParse.pNewIndex ){ + sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr); + sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere); + }else{ +#ifndef SQLITE_OMIT_TRIGGER + rc = renameResolveTrigger(&sParse); + if( rc==SQLITE_OK ){ + renameWalkTrigger(&sWalker, sParse.pNewTrigger); + } +#endif /* SQLITE_OMIT_TRIGGER */ + } + + if( rc==SQLITE_OK ){ + rc = renameEditSql(context, &sCtx, zInput, 0, 0); + } + renameTokenFree(db, sCtx.pList); + } + if( rc!=SQLITE_OK ){ + if( sqlite3WritableSchema(db) && rc==SQLITE_ERROR ){ + sqlite3_result_value(context, argv[1]); + }else{ + sqlite3_result_error_code(context, rc); + } + } + renameParseCleanup(&sParse); + } + +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = xAuth; +#endif + + sqlite3BtreeLeaveAll(db); +} + +/* Function: sqlite_rename_test(DB,SQL,TYPE,NAME,ISTEMP,WHEN,DQS) +** +** An SQL user function that checks that there are no parse or symbol +** resolution problems in a CREATE TRIGGER|TABLE|VIEW|INDEX statement. +** After an ALTER TABLE .. RENAME operation is performed and the schema +** reloaded, this function is called on each SQL statement in the schema +** to ensure that it is still usable. +** +** 0: Database name ("main", "temp" etc.). +** 1: SQL statement. +** 2: Object type ("view", "table", "trigger" or "index"). +** 3: Object name. +** 4: True if object is from temp schema. +** 5: "when" part of error message. +** 6: True to disable the DQS quirk when parsing SQL. +** +** The return value is computed as follows: +** +** A. If an error is seen and not in PRAGMA writable_schema=ON mode, +** then raise the error. +** B. Else if a trigger is created and the the table that the trigger is +** attached to is in database zDb, then return 1. +** C. Otherwise return NULL. +*/ +static void renameTableTest( + sqlite3_context *context, + int NotUsed, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + char const *zDb = (const char*)sqlite3_value_text(argv[0]); + char const *zInput = (const char*)sqlite3_value_text(argv[1]); + int bTemp = sqlite3_value_int(argv[4]); + int isLegacy = (db->flags & SQLITE_LegacyAlter); + char const *zWhen = (const char*)sqlite3_value_text(argv[5]); + int bNoDQS = sqlite3_value_int(argv[6]); + +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth = db->xAuth; + db->xAuth = 0; +#endif + + UNUSED_PARAMETER(NotUsed); + + if( zDb && zInput ){ + int rc; + Parse sParse; + int flags = db->flags; + if( bNoDQS ) db->flags &= ~(SQLITE_DqsDML|SQLITE_DqsDDL); + rc = renameParseSql(&sParse, zDb, db, zInput, bTemp); + db->flags |= (flags & (SQLITE_DqsDML|SQLITE_DqsDDL)); + if( rc==SQLITE_OK ){ + if( isLegacy==0 && sParse.pNewTable && IsView(sParse.pNewTable) ){ + NameContext sNC; + memset(&sNC, 0, sizeof(sNC)); + sNC.pParse = &sParse; + sqlite3SelectPrep(&sParse, sParse.pNewTable->u.view.pSelect, &sNC); + if( sParse.nErr ) rc = sParse.rc; + } + + else if( sParse.pNewTrigger ){ + if( isLegacy==0 ){ + rc = renameResolveTrigger(&sParse); + } + if( rc==SQLITE_OK ){ + int i1 = sqlite3SchemaToIndex(db, sParse.pNewTrigger->pTabSchema); + int i2 = sqlite3FindDbName(db, zDb); + if( i1==i2 ){ + /* Handle output case B */ + sqlite3_result_int(context, 1); + } + } + } + } + + if( rc!=SQLITE_OK && zWhen && !sqlite3WritableSchema(db) ){ + /* Output case A */ + renameColumnParseError(context, zWhen, argv[2], argv[3],&sParse); + } + renameParseCleanup(&sParse); + } + +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = xAuth; +#endif +} + +/* +** The implementation of internal UDF sqlite_drop_column(). +** +** Arguments: +** +** argv[0]: An integer - the index of the schema containing the table +** argv[1]: CREATE TABLE statement to modify. +** argv[2]: An integer - the index of the column to remove. +** +** The value returned is a string containing the CREATE TABLE statement +** with column argv[2] removed. +*/ +static void dropColumnFunc( + sqlite3_context *context, + int NotUsed, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + int iSchema = sqlite3_value_int(argv[0]); + const char *zSql = (const char*)sqlite3_value_text(argv[1]); + int iCol = sqlite3_value_int(argv[2]); + const char *zDb = db->aDb[iSchema].zDbSName; + int rc; + Parse sParse; + RenameToken *pCol; + Table *pTab; + const char *zEnd; + char *zNew = 0; + +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth = db->xAuth; + db->xAuth = 0; +#endif + + UNUSED_PARAMETER(NotUsed); + rc = renameParseSql(&sParse, zDb, db, zSql, iSchema==1); + if( rc!=SQLITE_OK ) goto drop_column_done; + pTab = sParse.pNewTable; + if( pTab==0 || pTab->nCol==1 || iCol>=pTab->nCol ){ + /* This can happen if the sqlite_schema table is corrupt */ + rc = SQLITE_CORRUPT_BKPT; + goto drop_column_done; + } + + pCol = renameTokenFind(&sParse, 0, (void*)pTab->aCol[iCol].zCnName); + if( iColnCol-1 ){ + RenameToken *pEnd; + pEnd = renameTokenFind(&sParse, 0, (void*)pTab->aCol[iCol+1].zCnName); + zEnd = (const char*)pEnd->t.z; + }else{ + assert( IsOrdinaryTable(pTab) ); + zEnd = (const char*)&zSql[pTab->u.tab.addColOffset]; + while( ALWAYS(pCol->t.z[0]!=0) && pCol->t.z[0]!=',' ) pCol->t.z--; + } + + zNew = sqlite3MPrintf(db, "%.*s%s", pCol->t.z-zSql, zSql, zEnd); + sqlite3_result_text(context, zNew, -1, SQLITE_TRANSIENT); + sqlite3_free(zNew); + +drop_column_done: + renameParseCleanup(&sParse); +#ifndef SQLITE_OMIT_AUTHORIZATION + db->xAuth = xAuth; +#endif + if( rc!=SQLITE_OK ){ + sqlite3_result_error_code(context, rc); + } +} + +/* +** This function is called by the parser upon parsing an +** +** ALTER TABLE pSrc DROP COLUMN pName +** +** statement. Argument pSrc contains the possibly qualified name of the +** table being edited, and token pName the name of the column to drop. +*/ +SQLITE_PRIVATE void sqlite3AlterDropColumn(Parse *pParse, SrcList *pSrc, const Token *pName){ + sqlite3 *db = pParse->db; /* Database handle */ + Table *pTab; /* Table to modify */ + int iDb; /* Index of db containing pTab in aDb[] */ + const char *zDb; /* Database containing pTab ("main" etc.) */ + char *zCol = 0; /* Name of column to drop */ + int iCol; /* Index of column zCol in pTab->aCol[] */ + + /* Look up the table being altered. */ + assert( pParse->pNewTable==0 ); + assert( sqlite3BtreeHoldsAllMutexes(db) ); + if( NEVER(db->mallocFailed) ) goto exit_drop_column; + pTab = sqlite3LocateTableItem(pParse, 0, &pSrc->a[0]); + if( !pTab ) goto exit_drop_column; + + /* Make sure this is not an attempt to ALTER a view, virtual table or + ** system table. */ + if( SQLITE_OK!=isAlterableTable(pParse, pTab) ) goto exit_drop_column; + if( SQLITE_OK!=isRealTable(pParse, pTab, 1) ) goto exit_drop_column; + + /* Find the index of the column being dropped. */ + zCol = sqlite3NameFromToken(db, pName); + if( zCol==0 ){ + assert( db->mallocFailed ); + goto exit_drop_column; + } + iCol = sqlite3ColumnIndex(pTab, zCol); + if( iCol<0 ){ + sqlite3ErrorMsg(pParse, "no such column: \"%T\"", pName); + goto exit_drop_column; + } + + /* Do not allow the user to drop a PRIMARY KEY column or a column + ** constrained by a UNIQUE constraint. */ + if( pTab->aCol[iCol].colFlags & (COLFLAG_PRIMKEY|COLFLAG_UNIQUE) ){ + sqlite3ErrorMsg(pParse, "cannot drop %s column: \"%s\"", + (pTab->aCol[iCol].colFlags&COLFLAG_PRIMKEY) ? "PRIMARY KEY" : "UNIQUE", + zCol + ); + goto exit_drop_column; + } + + /* Do not allow the number of columns to go to zero */ + if( pTab->nCol<=1 ){ + sqlite3ErrorMsg(pParse, "cannot drop column \"%s\": no other columns exist",zCol); + goto exit_drop_column; + } + + /* Edit the sqlite_schema table */ + iDb = sqlite3SchemaToIndex(db, pTab->pSchema); + assert( iDb>=0 ); + zDb = db->aDb[iDb].zDbSName; +#ifndef SQLITE_OMIT_AUTHORIZATION + /* Invoke the authorization callback. */ + if( sqlite3AuthCheck(pParse, SQLITE_ALTER_TABLE, zDb, pTab->zName, zCol) ){ + goto exit_drop_column; + } +#endif + renameTestSchema(pParse, zDb, iDb==1, "", 0); + renameFixQuotes(pParse, zDb, iDb==1); + sqlite3NestedParse(pParse, + "UPDATE \"%w\"." LEGACY_SCHEMA_TABLE " SET " + "sql = sqlite_drop_column(%d, sql, %d) " + "WHERE (type=='table' AND tbl_name=%Q COLLATE nocase)" + , zDb, iDb, iCol, pTab->zName + ); + + /* Drop and reload the database schema. */ + renameReloadSchema(pParse, iDb, INITFLAG_AlterDrop); + renameTestSchema(pParse, zDb, iDb==1, "after drop column", 1); + + /* Edit rows of table on disk */ + if( pParse->nErr==0 && (pTab->aCol[iCol].colFlags & COLFLAG_VIRTUAL)==0 ){ + int i; + int addr; + int reg; + int regRec; + Index *pPk = 0; + int nField = 0; /* Number of non-virtual columns after drop */ + int iCur; + Vdbe *v = sqlite3GetVdbe(pParse); + iCur = pParse->nTab++; + sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenWrite); + addr = sqlite3VdbeAddOp1(v, OP_Rewind, iCur); VdbeCoverage(v); + reg = ++pParse->nMem; + if( HasRowid(pTab) ){ + sqlite3VdbeAddOp2(v, OP_Rowid, iCur, reg); + pParse->nMem += pTab->nCol; + }else{ + pPk = sqlite3PrimaryKeyIndex(pTab); + pParse->nMem += pPk->nColumn; + for(i=0; inKeyCol; i++){ + sqlite3VdbeAddOp3(v, OP_Column, iCur, i, reg+i+1); + } + nField = pPk->nKeyCol; + } + regRec = ++pParse->nMem; + for(i=0; inCol; i++){ + if( i!=iCol && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ){ + int regOut; + if( pPk ){ + int iPos = sqlite3TableColumnToIndex(pPk, i); + int iColPos = sqlite3TableColumnToIndex(pPk, iCol); + if( iPosnKeyCol ) continue; + regOut = reg+1+iPos-(iPos>iColPos); + }else{ + regOut = reg+1+nField; + } + if( i==pTab->iPKey ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, regOut); + }else{ + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, i, regOut); + } + nField++; + } + } + if( nField==0 ){ + /* dbsqlfuzz 5f09e7bcc78b4954d06bf9f2400d7715f48d1fef */ + pParse->nMem++; + sqlite3VdbeAddOp2(v, OP_Null, 0, reg+1); + nField = 1; + } + sqlite3VdbeAddOp3(v, OP_MakeRecord, reg+1, nField, regRec); + if( pPk ){ + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iCur, regRec, reg+1, pPk->nKeyCol); + }else{ + sqlite3VdbeAddOp3(v, OP_Insert, iCur, regRec, reg); + } + sqlite3VdbeChangeP5(v, OPFLAG_SAVEPOSITION); + + sqlite3VdbeAddOp2(v, OP_Next, iCur, addr+1); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addr); + } + +exit_drop_column: + sqlite3DbFree(db, zCol); + sqlite3SrcListDelete(db, pSrc); +} + +/* +** Register built-in functions used to help implement ALTER TABLE +*/ +SQLITE_PRIVATE void sqlite3AlterFunctions(void){ + static FuncDef aAlterTableFuncs[] = { + INTERNAL_FUNCTION(sqlite_rename_column, 9, renameColumnFunc), + INTERNAL_FUNCTION(sqlite_rename_table, 7, renameTableFunc), + INTERNAL_FUNCTION(sqlite_rename_test, 7, renameTableTest), + INTERNAL_FUNCTION(sqlite_drop_column, 3, dropColumnFunc), + INTERNAL_FUNCTION(sqlite_rename_quotefix,2, renameQuotefixFunc), + }; + sqlite3InsertBuiltinFuncs(aAlterTableFuncs, ArraySize(aAlterTableFuncs)); +} #endif /* SQLITE_ALTER_TABLE */ /************** End of alter.c ***********************************************/ @@ -101108,13 +116519,13 @@ exit_begin_add_column: ** is between 3.6.18 and 3.7.8, inclusive, and unless SQLite is compiled ** with SQLITE_ENABLE_STAT2. The sqlite_stat2 table is deprecated. ** The sqlite_stat2 table is superseded by sqlite_stat3, which is only -** created and used by SQLite versions 3.7.9 and later and with +** created and used by SQLite versions 3.7.9 through 3.29.0 when ** SQLITE_ENABLE_STAT3 defined. The functionality of sqlite_stat3 -** is a superset of sqlite_stat2. The sqlite_stat4 is an enhanced -** version of sqlite_stat3 and is only available when compiled with -** SQLITE_ENABLE_STAT4 and in SQLite versions 3.8.1 and later. It is -** not possible to enable both STAT3 and STAT4 at the same time. If they -** are both enabled, then STAT4 takes precedence. +** is a superset of sqlite_stat2 and is also now deprecated. The +** sqlite_stat4 is an enhanced version of sqlite_stat3 and is only +** available when compiled with SQLITE_ENABLE_STAT4 and in SQLite +** versions 3.8.1 and later. STAT4 is the only variant that is still +** supported. ** ** For most applications, sqlite_stat1 provides all the statistics required ** for the query planner to make good choices. @@ -101130,7 +116541,7 @@ exit_begin_add_column: ** integer is the average number of rows in the index that have the same ** value in the first column of the index. The third integer is the average ** number of rows in the index that have the same value for the first two -** columns. The N-th integer (for N>1) is the average number of rows in +** columns. The N-th integer (for N>1) is the average number of rows in ** the index which have the same value for the first N-1 columns. For ** a K-column index, there will be K+1 integers in the stat column. If ** the index is unique, then the last integer will be 1. @@ -101140,7 +116551,7 @@ exit_begin_add_column: ** must be separated from the last integer by a single space. If the ** "unordered" keyword is present, then the query planner assumes that ** the index is unordered and will not use the index for a range query. -** +** ** If the sqlite_stat1.idx column is NULL, then the sqlite_stat1.stat ** column contains a single integer which is the (estimated) number of ** rows in the table identified by sqlite_stat1.tbl. @@ -101198,9 +116609,9 @@ exit_begin_add_column: ** number of entries that are strictly less than the sample. The first ** integer in nLt contains the number of entries in the index where the ** left-most column is less than the left-most column of the sample. -** The K-th integer in the nLt entry is the number of index entries +** The K-th integer in the nLt entry is the number of index entries ** where the first K columns are less than the first K columns of the -** sample. The nDLt column is like nLt except that it contains the +** sample. The nDLt column is like nLt except that it contains the ** number of distinct entries in the index that are less than the ** sample. ** @@ -101225,17 +116636,11 @@ exit_begin_add_column: #if defined(SQLITE_ENABLE_STAT4) # define IsStat4 1 -# define IsStat3 0 -#elif defined(SQLITE_ENABLE_STAT3) -# define IsStat4 0 -# define IsStat3 1 #else # define IsStat4 0 -# define IsStat3 0 # undef SQLITE_STAT4_SAMPLES # define SQLITE_STAT4_SAMPLES 1 #endif -#define IsStat34 (IsStat3+IsStat4) /* 1 for STAT3 or STAT4. 0 otherwise */ /* ** This routine generates code that opens the sqlite_statN tables. @@ -101264,21 +116669,22 @@ static void openStatTable( { "sqlite_stat1", "tbl,idx,stat" }, #if defined(SQLITE_ENABLE_STAT4) { "sqlite_stat4", "tbl,idx,neq,nlt,ndlt,sample" }, - { "sqlite_stat3", 0 }, -#elif defined(SQLITE_ENABLE_STAT3) - { "sqlite_stat3", "tbl,idx,neq,nlt,ndlt,sample" }, - { "sqlite_stat4", 0 }, #else - { "sqlite_stat3", 0 }, { "sqlite_stat4", 0 }, #endif + { "sqlite_stat3", 0 }, }; int i; sqlite3 *db = pParse->db; Db *pDb; Vdbe *v = sqlite3GetVdbe(pParse); - int aRoot[ArraySize(aTable)]; + u32 aRoot[ArraySize(aTable)]; u8 aCreateTbl[ArraySize(aTable)]; +#ifdef SQLITE_ENABLE_STAT4 + const int nToOpen = OptimizationEnabled(db,SQLITE_Stat4) ? 2 : 1; +#else + const int nToOpen = 1; +#endif if( v==0 ) return; assert( sqlite3BtreeHoldsAllMutexes(db) ); @@ -101291,24 +116697,24 @@ static void openStatTable( for(i=0; izDbSName))==0 ){ - if( aTable[i].zCols ){ - /* The sqlite_statN table does not exist. Create it. Note that a - ** side-effect of the CREATE TABLE statement is to leave the rootpage - ** of the new table in register pParse->regRoot. This is important + if( iregRoot. This is important ** because the OpenWrite opcode below will be needing it. */ sqlite3NestedParse(pParse, "CREATE TABLE %Q.%s(%s)", pDb->zDbSName, zTab, aTable[i].zCols ); - aRoot[i] = pParse->regRoot; + aRoot[i] = (u32)pParse->regRoot; aCreateTbl[i] = OPFLAG_P2ISREG; } }else{ - /* The table already exists. If zWhere is not NULL, delete all entries + /* The table already exists. If zWhere is not NULL, delete all entries ** associated with the table zWhere. If zWhere is NULL, delete the ** entire contents of the table. */ aRoot[i] = pStat->tnum; - aCreateTbl[i] = 0; sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab); if( zWhere ){ sqlite3NestedParse(pParse, @@ -101321,15 +116727,15 @@ static void openStatTable( #endif }else{ /* The sqlite_stat[134] table already exists. Delete all rows. */ - sqlite3VdbeAddOp2(v, OP_Clear, aRoot[i], iDb); + sqlite3VdbeAddOp2(v, OP_Clear, (int)aRoot[i], iDb); } } } /* Open the sqlite_stat[134] tables for writing. */ - for(i=0; aTable[i].zCols; i++){ + for(i=0; inRowid ){ sqlite3DbFree(db, p->u.aRowid); @@ -101395,8 +116806,8 @@ static void sampleClear(sqlite3 *db, Stat4Sample *p){ /* Initialize the BLOB value of a ROWID */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){ +#ifdef SQLITE_ENABLE_STAT4 +static void sampleSetRowid(sqlite3 *db, StatSample *p, int n, const u8 *pData){ assert( db!=0 ); if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid); p->u.aRowid = sqlite3DbMallocRawNN(db, n); @@ -101411,8 +116822,8 @@ static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){ /* Initialize the INTEGER value of a ROWID. */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){ +#ifdef SQLITE_ENABLE_STAT4 +static void sampleSetRowidInt64(sqlite3 *db, StatSample *p, i64 iRowid){ assert( db!=0 ); if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid); p->nRowid = 0; @@ -101424,8 +116835,8 @@ static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){ /* ** Copy the contents of object (*pFrom) into (*pTo). */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){ +#ifdef SQLITE_ENABLE_STAT4 +static void sampleCopy(StatAccum *p, StatSample *pTo, StatSample *pFrom){ pTo->isPSample = pFrom->isPSample; pTo->iCol = pFrom->iCol; pTo->iHash = pFrom->iHash; @@ -101441,40 +116852,41 @@ static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){ #endif /* -** Reclaim all memory of a Stat4Accum structure. +** Reclaim all memory of a StatAccum structure. */ -static void stat4Destructor(void *pOld){ - Stat4Accum *p = (Stat4Accum*)pOld; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - int i; - for(i=0; inCol; i++) sampleClear(p->db, p->aBest+i); - for(i=0; imxSample; i++) sampleClear(p->db, p->a+i); - sampleClear(p->db, &p->current); +static void statAccumDestructor(void *pOld){ + StatAccum *p = (StatAccum*)pOld; +#ifdef SQLITE_ENABLE_STAT4 + if( p->mxSample ){ + int i; + for(i=0; inCol; i++) sampleClear(p->db, p->aBest+i); + for(i=0; imxSample; i++) sampleClear(p->db, p->a+i); + sampleClear(p->db, &p->current); + } #endif sqlite3DbFree(p->db, p); } /* -** Implementation of the stat_init(N,K,C) SQL function. The three parameters +** Implementation of the stat_init(N,K,C,L) SQL function. The four parameters ** are: ** N: The number of columns in the index including the rowid/pk (note 1) ** K: The number of columns in the index excluding the rowid/pk. -** C: The number of rows in the index (note 2) +** C: Estimated number of rows in the index +** L: A limit on the number of rows to scan, or 0 for no-limit ** ** Note 1: In the special case of the covering index that implements a ** WITHOUT ROWID table, N is the number of PRIMARY KEY columns, not the ** total number of columns in the table. ** -** Note 2: C is only used for STAT3 and STAT4. -** ** For indexes on ordinary rowid tables, N==K+1. But for indexes on ** WITHOUT ROWID tables, N=K+P where P is the number of columns in the ** PRIMARY KEY of the table. The covering index that implements the ** original WITHOUT ROWID table as N==K as a special case. ** -** This routine allocates the Stat4Accum object in heap memory. The return -** value is a pointer to the Stat4Accum object. The datatype of the -** return value is BLOB, but it is really just a pointer to the Stat4Accum +** This routine allocates the StatAccum object in heap memory. The return +** value is a pointer to the StatAccum object. The datatype of the +** return value is BLOB, but it is really just a pointer to the StatAccum ** object. */ static void statInit( @@ -101482,14 +116894,15 @@ static void statInit( int argc, sqlite3_value **argv ){ - Stat4Accum *p; + StatAccum *p; int nCol; /* Number of columns in index being sampled */ int nKeyCol; /* Number of key columns */ int nColUp; /* nCol rounded up for alignment */ int n; /* Bytes of space to allocate */ - sqlite3 *db; /* Database connection */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - int mxSample = SQLITE_STAT4_SAMPLES; + sqlite3 *db = sqlite3_context_db_handle(context); /* Database connection */ +#ifdef SQLITE_ENABLE_STAT4 + /* Maximum number of samples. 0 if STAT4 data is not collected */ + int mxSample = OptimizationEnabled(db,SQLITE_Stat4) ?SQLITE_STAT4_SAMPLES :0; #endif /* Decode the three function arguments */ @@ -101501,17 +116914,17 @@ static void statInit( assert( nKeyCol<=nCol ); assert( nKeyCol>0 ); - /* Allocate the space required for the Stat4Accum object */ - n = sizeof(*p) - + sizeof(tRowcnt)*nColUp /* Stat4Accum.anEq */ - + sizeof(tRowcnt)*nColUp /* Stat4Accum.anDLt */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - + sizeof(tRowcnt)*nColUp /* Stat4Accum.anLt */ - + sizeof(Stat4Sample)*(nCol+mxSample) /* Stat4Accum.aBest[], a[] */ - + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample) + /* Allocate the space required for the StatAccum object */ + n = sizeof(*p) + + sizeof(tRowcnt)*nColUp /* StatAccum.anEq */ + + sizeof(tRowcnt)*nColUp; /* StatAccum.anDLt */ +#ifdef SQLITE_ENABLE_STAT4 + if( mxSample ){ + n += sizeof(tRowcnt)*nColUp /* StatAccum.anLt */ + + sizeof(StatSample)*(nCol+mxSample) /* StatAccum.aBest[], a[] */ + + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample); + } #endif - ; - db = sqlite3_context_db_handle(context); p = sqlite3DbMallocZero(db, n); if( p==0 ){ sqlite3_result_error_nomem(context); @@ -101519,25 +116932,28 @@ static void statInit( } p->db = db; + p->nEst = sqlite3_value_int64(argv[2]); p->nRow = 0; + p->nLimit = sqlite3_value_int64(argv[3]); p->nCol = nCol; p->nKeyCol = nKeyCol; + p->nSkipAhead = 0; p->current.anDLt = (tRowcnt*)&p[1]; p->current.anEq = &p->current.anDLt[nColUp]; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - { +#ifdef SQLITE_ENABLE_STAT4 + p->mxSample = p->nLimit==0 ? mxSample : 0; + if( mxSample ){ u8 *pSpace; /* Allocated space not yet assigned */ int i; /* Used to iterate through p->aSample[] */ p->iGet = -1; - p->mxSample = mxSample; - p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[2])/(mxSample/3+1) + 1); + p->nPSample = (tRowcnt)(p->nEst/(mxSample/3+1) + 1); p->current.anLt = &p->current.anEq[nColUp]; p->iPrn = 0x689e962d*(u32)nCol ^ 0xd0944565*(u32)sqlite3_value_int(argv[2]); - - /* Set up the Stat4Accum.a[] and aBest[] arrays */ - p->a = (struct Stat4Sample*)&p->current.anLt[nColUp]; + + /* Set up the StatAccum.a[] and aBest[] arrays */ + p->a = (struct StatSample*)&p->current.anLt[nColUp]; p->aBest = &p->a[mxSample]; pSpace = (u8*)(&p->a[mxSample+nCol]); for(i=0; i<(mxSample+nCol); i++){ @@ -101546,7 +116962,7 @@ static void statInit( p->a[i].anDLt = (tRowcnt *)pSpace; pSpace += (sizeof(tRowcnt) * nColUp); } assert( (pSpace - (u8*)p)==n ); - + for(i=0; iaBest[i].iCol = i; } @@ -101557,35 +116973,36 @@ static void statInit( ** only the pointer (the 2nd parameter) matters. The size of the object ** (given by the 3rd parameter) is never used and can be any positive ** value. */ - sqlite3_result_blob(context, p, sizeof(*p), stat4Destructor); + sqlite3_result_blob(context, p, sizeof(*p), statAccumDestructor); } static const FuncDef statInitFuncdef = { - 2+IsStat34, /* nArg */ + 4, /* nArg */ SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ statInit, /* xSFunc */ 0, /* xFinalize */ + 0, 0, /* xValue, xInverse */ "stat_init", /* zName */ {0} }; #ifdef SQLITE_ENABLE_STAT4 /* -** pNew and pOld are both candidate non-periodic samples selected for -** the same column (pNew->iCol==pOld->iCol). Ignoring this column and +** pNew and pOld are both candidate non-periodic samples selected for +** the same column (pNew->iCol==pOld->iCol). Ignoring this column and ** considering only any trailing columns and the sample hash value, this ** function returns true if sample pNew is to be preferred over pOld. ** In other words, if we assume that the cardinalities of the selected ** column for pNew and pOld are equal, is pNew to be preferred over pOld. ** ** This function assumes that for each argument sample, the contents of -** the anEq[] array from pSample->anEq[pSample->iCol+1] onwards are valid. +** the anEq[] array from pSample->anEq[pSample->iCol+1] onwards are valid. */ static int sampleIsBetterPost( - Stat4Accum *pAccum, - Stat4Sample *pNew, - Stat4Sample *pOld + StatAccum *pAccum, + StatSample *pNew, + StatSample *pOld ){ int nCol = pAccum->nCol; int i; @@ -101599,17 +117016,17 @@ static int sampleIsBetterPost( } #endif -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Return true if pNew is to be preferred over pOld. ** ** This function assumes that for each argument sample, the contents of -** the anEq[] array from pSample->anEq[pSample->iCol] onwards are valid. +** the anEq[] array from pSample->anEq[pSample->iCol] onwards are valid. */ static int sampleIsBetter( - Stat4Accum *pAccum, - Stat4Sample *pNew, - Stat4Sample *pOld + StatAccum *pAccum, + StatSample *pNew, + StatSample *pOld ){ tRowcnt nEqNew = pNew->anEq[pNew->iCol]; tRowcnt nEqOld = pOld->anEq[pOld->iCol]; @@ -101618,46 +117035,41 @@ static int sampleIsBetter( assert( IsStat4 || (pNew->iCol==0 && pOld->iCol==0) ); if( (nEqNew>nEqOld) ) return 1; -#ifdef SQLITE_ENABLE_STAT4 if( nEqNew==nEqOld ){ if( pNew->iColiCol ) return 1; return (pNew->iCol==pOld->iCol && sampleIsBetterPost(pAccum, pNew, pOld)); } return 0; -#else - return (nEqNew==nEqOld && pNew->iHash>pOld->iHash); -#endif } /* ** Copy the contents of sample *pNew into the p->a[] array. If necessary, ** remove the least desirable sample from p->a[] to make room. */ -static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){ - Stat4Sample *pSample = 0; +static void sampleInsert(StatAccum *p, StatSample *pNew, int nEqZero){ + StatSample *pSample = 0; int i; assert( IsStat4 || nEqZero==0 ); -#ifdef SQLITE_ENABLE_STAT4 - /* Stat4Accum.nMaxEqZero is set to the maximum number of leading 0 - ** values in the anEq[] array of any sample in Stat4Accum.a[]. In + /* StatAccum.nMaxEqZero is set to the maximum number of leading 0 + ** values in the anEq[] array of any sample in StatAccum.a[]. In ** other words, if nMaxEqZero is n, then it is guaranteed that there - ** are no samples with Stat4Sample.anEq[m]==0 for (m>=n). */ + ** are no samples with StatSample.anEq[m]==0 for (m>=n). */ if( nEqZero>p->nMaxEqZero ){ p->nMaxEqZero = nEqZero; } if( pNew->isPSample==0 ){ - Stat4Sample *pUpgrade = 0; + StatSample *pUpgrade = 0; assert( pNew->anEq[pNew->iCol]>0 ); - /* This sample is being added because the prefix that ends in column + /* This sample is being added because the prefix that ends in column ** iCol occurs many times in the table. However, if we have already ** added a sample that shares this prefix, there is no need to add ** this one. Instead, upgrade the priority of the highest priority ** existing sample that shares this prefix. */ for(i=p->nSample-1; i>=0; i--){ - Stat4Sample *pOld = &p->a[i]; + StatSample *pOld = &p->a[i]; if( pOld->anEq[pNew->iCol]==0 ){ if( pOld->isPSample ) return; assert( pOld->iCol>pNew->iCol ); @@ -101673,11 +117085,10 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){ goto find_new_min; } } -#endif /* If necessary, remove sample iMin to make room for the new sample. */ if( p->nSample>=p->mxSample ){ - Stat4Sample *pMin = &p->a[p->iMin]; + StatSample *pMin = &p->a[p->iMin]; tRowcnt *anEq = pMin->anEq; tRowcnt *anLt = pMin->anLt; tRowcnt *anDLt = pMin->anDLt; @@ -101694,10 +117105,8 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){ /* The "rows less-than" for the rowid column must be greater than that ** for the last sample in the p->a[] array. Otherwise, the samples would ** be out of order. */ -#ifdef SQLITE_ENABLE_STAT4 - assert( p->nSample==0 + assert( p->nSample==0 || pNew->anLt[p->nCol-1] > p->a[p->nSample-1].anLt[p->nCol-1] ); -#endif /* Insert the new sample */ pSample = &p->a[p->nSample]; @@ -101707,9 +117116,7 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){ /* Zero the first nEqZero entries in the anEq[] array. */ memset(pSample->anEq, 0, sizeof(tRowcnt)*nEqZero); -#ifdef SQLITE_ENABLE_STAT4 - find_new_min: -#endif +find_new_min: if( p->nSample>=p->mxSample ){ int iMin = -1; for(i=0; imxSample; i++){ @@ -101722,22 +117129,22 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){ p->iMin = iMin; } } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ +#ifdef SQLITE_ENABLE_STAT4 /* ** Field iChng of the index being scanned has changed. So at this point ** p->current contains a sample that reflects the previous row of the ** index. The value of anEq[iChng] and subsequent anEq[] elements are ** correct at this point. */ -static void samplePushPrevious(Stat4Accum *p, int iChng){ -#ifdef SQLITE_ENABLE_STAT4 +static void samplePushPrevious(StatAccum *p, int iChng){ int i; /* Check if any samples from the aBest[] array should be pushed ** into IndexSample.a[] at this point. */ for(i=(p->nCol-2); i>=iChng; i--){ - Stat4Sample *pBest = &p->aBest[i]; + StatSample *pBest = &p->aBest[i]; pBest->anEq[i] = p->current.anEq[i]; if( p->nSamplemxSample || sampleIsBetter(p, pBest, &p->a[p->iMin]) ){ sampleInsert(p, pBest, i); @@ -101761,50 +117168,27 @@ static void samplePushPrevious(Stat4Accum *p, int iChng){ } p->nMaxEqZero = iChng; } -#endif - -#if defined(SQLITE_ENABLE_STAT3) && !defined(SQLITE_ENABLE_STAT4) - if( iChng==0 ){ - tRowcnt nLt = p->current.anLt[0]; - tRowcnt nEq = p->current.anEq[0]; - - /* Check if this is to be a periodic sample. If so, add it. */ - if( (nLt/p->nPSample)!=(nLt+nEq)/p->nPSample ){ - p->current.isPSample = 1; - sampleInsert(p, &p->current, 0); - p->current.isPSample = 0; - }else - - /* Or if it is a non-periodic sample. Add it in this case too. */ - if( p->nSamplemxSample - || sampleIsBetter(p, &p->current, &p->a[p->iMin]) - ){ - sampleInsert(p, &p->current, 0); - } - } -#endif - -#ifndef SQLITE_ENABLE_STAT3_OR_STAT4 - UNUSED_PARAMETER( p ); - UNUSED_PARAMETER( iChng ); -#endif } +#endif /* SQLITE_ENABLE_STAT4 */ /* ** Implementation of the stat_push SQL function: stat_push(P,C,R) ** Arguments: ** -** P Pointer to the Stat4Accum object created by stat_init() +** P Pointer to the StatAccum object created by stat_init() ** C Index of left-most column to differ from previous row ** R Rowid for the current row. Might be a key record for ** WITHOUT ROWID tables. ** -** This SQL function always returns NULL. It's purpose it to accumulate -** statistical data and/or samples in the Stat4Accum object about the -** index being analyzed. The stat_get() SQL function will later be used to -** extract relevant information for constructing the sqlite_statN tables. +** The purpose of this routine is to collect statistical data and/or +** samples from the index being analyzed into the StatAccum object. +** The stat_get() SQL function will be used afterwards to +** retrieve the information gathered. ** -** The R parameter is only used for STAT3 and STAT4 +** This SQL function usually returns NULL, but might return an integer +** if it wants the byte-code to do special processing. +** +** The R parameter is only used for STAT4 */ static void statPush( sqlite3_context *context, @@ -101814,7 +117198,7 @@ static void statPush( int i; /* The three function arguments */ - Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]); + StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]); int iChng = sqlite3_value_int(argv[1]); UNUSED_PARAMETER( argc ); @@ -101827,7 +117211,9 @@ static void statPush( for(i=0; inCol; i++) p->current.anEq[i] = 1; }else{ /* Second and subsequent calls get processed here */ - samplePushPrevious(p, iChng); +#ifdef SQLITE_ENABLE_STAT4 + if( p->mxSample ) samplePushPrevious(p, iChng); +#endif /* Update anDLt[], anLt[] and anEq[] to reflect the values that apply ** to the current row of the index. */ @@ -101836,27 +117222,26 @@ static void statPush( } for(i=iChng; inCol; i++){ p->current.anDLt[i]++; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - p->current.anLt[i] += p->current.anEq[i]; +#ifdef SQLITE_ENABLE_STAT4 + if( p->mxSample ) p->current.anLt[i] += p->current.anEq[i]; #endif p->current.anEq[i] = 1; } } + p->nRow++; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - if( sqlite3_value_type(argv[2])==SQLITE_INTEGER ){ - sampleSetRowidInt64(p->db, &p->current, sqlite3_value_int64(argv[2])); - }else{ - sampleSetRowid(p->db, &p->current, sqlite3_value_bytes(argv[2]), - sqlite3_value_blob(argv[2])); - } - p->current.iHash = p->iPrn = p->iPrn*1103515245 + 12345; -#endif - #ifdef SQLITE_ENABLE_STAT4 - { - tRowcnt nLt = p->current.anLt[p->nCol-1]; + if( p->mxSample ){ + tRowcnt nLt; + if( sqlite3_value_type(argv[2])==SQLITE_INTEGER ){ + sampleSetRowidInt64(p->db, &p->current, sqlite3_value_int64(argv[2])); + }else{ + sampleSetRowid(p->db, &p->current, sqlite3_value_bytes(argv[2]), + sqlite3_value_blob(argv[2])); + } + p->current.iHash = p->iPrn = p->iPrn*1103515245 + 12345; + nLt = p->current.anLt[p->nCol-1]; /* Check if this is to be a periodic sample. If so, add it. */ if( (nLt/p->nPSample)!=(nLt+1)/p->nPSample ){ p->current.isPSample = 1; @@ -101872,16 +117257,22 @@ static void statPush( sampleCopy(p, &p->aBest[i], &p->current); } } - } + }else #endif + if( p->nLimit && p->nRow>(tRowcnt)p->nLimit*(p->nSkipAhead+1) ){ + p->nSkipAhead++; + sqlite3_result_int(context, p->current.anDLt[0]>0); + } } + static const FuncDef statPushFuncdef = { - 2+IsStat34, /* nArg */ + 2+IsStat4, /* nArg */ SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ statPush, /* xSFunc */ 0, /* xFinalize */ + 0, 0, /* xValue, xInverse */ "stat_push", /* zName */ {0} }; @@ -101895,18 +117286,18 @@ static const FuncDef statPushFuncdef = { /* ** Implementation of the stat_get(P,J) SQL function. This routine is ** used to query statistical information that has been gathered into -** the Stat4Accum object by prior calls to stat_push(). The P parameter -** has type BLOB but it is really just a pointer to the Stat4Accum object. +** the StatAccum object by prior calls to stat_push(). The P parameter +** has type BLOB but it is really just a pointer to the StatAccum object. ** The content to returned is determined by the parameter J ** which is one of the STAT_GET_xxxx values defined above. ** ** The stat_get(P,J) function is not available to generic SQL. It is ** inserted as part of a manually constructed bytecode program. (See ** the callStatGet() routine below.) It is guaranteed that the P -** parameter will always be a poiner to a Stat4Accum object, never a +** parameter will always be a pointer to a StatAccum object, never a ** NULL. ** -** If neither STAT3 nor STAT4 are enabled, then J is always +** If STAT4 is not enabled, then J is always ** STAT_GET_STAT1 and is hence omitted and this routine becomes ** a one-parameter function, stat_get(P), that always returns the ** stat1 table entry information. @@ -101916,15 +117307,16 @@ static void statGet( int argc, sqlite3_value **argv ){ - Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]); -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - /* STAT3 and STAT4 have a parameter on this routine. */ + StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]); +#ifdef SQLITE_ENABLE_STAT4 + /* STAT4 has a parameter on this routine. */ int eCall = sqlite3_value_int(argv[1]); assert( argc==2 ); - assert( eCall==STAT_GET_STAT1 || eCall==STAT_GET_NEQ + assert( eCall==STAT_GET_STAT1 || eCall==STAT_GET_NEQ || eCall==STAT_GET_ROWID || eCall==STAT_GET_NLT - || eCall==STAT_GET_NDLT + || eCall==STAT_GET_NDLT ); + assert( eCall==STAT_GET_STAT1 || p->mxSample ); if( eCall==STAT_GET_STAT1 ) #else assert( argc==1 ); @@ -101933,54 +117325,52 @@ static void statGet( /* Return the value to store in the "stat" column of the sqlite_stat1 ** table for this index. ** - ** The value is a string composed of a list of integers describing - ** the index. The first integer in the list is the total number of - ** entries in the index. There is one additional integer in the list + ** The value is a string composed of a list of integers describing + ** the index. The first integer in the list is the total number of + ** entries in the index. There is one additional integer in the list ** for each indexed column. This additional integer is an estimate of - ** the number of rows matched by a stabbing query on the index using + ** the number of rows matched by a equality query on the index using ** a key with the corresponding number of fields. In other words, - ** if the index is on columns (a,b) and the sqlite_stat1 value is + ** if the index is on columns (a,b) and the sqlite_stat1 value is ** "100 10 2", then SQLite estimates that: ** ** * the index contains 100 rows, ** * "WHERE a=?" matches 10 rows, and ** * "WHERE a=? AND b=?" matches 2 rows. ** - ** If D is the count of distinct values and K is the total number of - ** rows, then each estimate is computed as: + ** If D is the count of distinct values and K is the total number of + ** rows, then each estimate is usually computed as: ** ** I = (K+D-1)/D + ** + ** In other words, I is K/D rounded up to the next whole integer. + ** However, if I is between 1.0 and 1.1 (in other words if I is + ** close to 1.0 but just a little larger) then do not round up but + ** instead keep the I value at 1.0. */ - char *z; - int i; + sqlite3_str sStat; /* Text of the constructed "stat" line */ + int i; /* Loop counter */ - char *zRet = sqlite3MallocZero( (p->nKeyCol+1)*25 ); - if( zRet==0 ){ - sqlite3_result_error_nomem(context); - return; - } - - sqlite3_snprintf(24, zRet, "%llu", (u64)p->nRow); - z = zRet + sqlite3Strlen30(zRet); + sqlite3StrAccumInit(&sStat, 0, 0, 0, (p->nKeyCol+1)*100); + sqlite3_str_appendf(&sStat, "%llu", + p->nSkipAhead ? (u64)p->nEst : (u64)p->nRow); for(i=0; inKeyCol; i++){ u64 nDistinct = p->current.anDLt[i] + 1; u64 iVal = (p->nRow + nDistinct - 1) / nDistinct; - sqlite3_snprintf(24, z, " %llu", iVal); - z += sqlite3Strlen30(z); + if( iVal==2 && p->nRow*10 <= nDistinct*11 ) iVal = 1; + sqlite3_str_appendf(&sStat, " %llu", iVal); assert( p->current.anEq[i] ); } - assert( z[0]=='\0' && z>zRet ); - - sqlite3_result_text(context, zRet, -1, sqlite3_free); + sqlite3ResultStrAccum(context, &sStat); } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 else if( eCall==STAT_GET_ROWID ){ if( p->iGet<0 ){ samplePushPrevious(p, 0); p->iGet = 0; } if( p->iGetnSample ){ - Stat4Sample *pS = p->a + p->iGet; + StatSample *pS = p->a + p->iGet; if( pS->nRowid==0 ){ sqlite3_result_int64(context, pS->u.iRowid); }else{ @@ -101990,67 +117380,81 @@ static void statGet( } }else{ tRowcnt *aCnt = 0; + sqlite3_str sStat; + int i; assert( p->iGetnSample ); switch( eCall ){ case STAT_GET_NEQ: aCnt = p->a[p->iGet].anEq; break; case STAT_GET_NLT: aCnt = p->a[p->iGet].anLt; break; default: { - aCnt = p->a[p->iGet].anDLt; + aCnt = p->a[p->iGet].anDLt; p->iGet++; break; } } - - if( IsStat3 ){ - sqlite3_result_int64(context, (i64)aCnt[0]); - }else{ - char *zRet = sqlite3MallocZero(p->nCol * 25); - if( zRet==0 ){ - sqlite3_result_error_nomem(context); - }else{ - int i; - char *z = zRet; - for(i=0; inCol; i++){ - sqlite3_snprintf(24, z, "%llu ", (u64)aCnt[i]); - z += sqlite3Strlen30(z); - } - assert( z[0]=='\0' && z>zRet ); - z[-1] = '\0'; - sqlite3_result_text(context, zRet, -1, sqlite3_free); - } + sqlite3StrAccumInit(&sStat, 0, 0, 0, p->nCol*100); + for(i=0; inCol; i++){ + sqlite3_str_appendf(&sStat, "%llu ", (u64)aCnt[i]); } + if( sStat.nChar ) sStat.nChar--; + sqlite3ResultStrAccum(context, &sStat); } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ #ifndef SQLITE_DEBUG UNUSED_PARAMETER( argc ); #endif } static const FuncDef statGetFuncdef = { - 1+IsStat34, /* nArg */ + 1+IsStat4, /* nArg */ SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ statGet, /* xSFunc */ 0, /* xFinalize */ + 0, 0, /* xValue, xInverse */ "stat_get", /* zName */ {0} }; -static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){ - assert( regOut!=regStat4 && regOut!=regStat4+1 ); -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - sqlite3VdbeAddOp2(v, OP_Integer, iParam, regStat4+1); +static void callStatGet(Parse *pParse, int regStat, int iParam, int regOut){ +#ifdef SQLITE_ENABLE_STAT4 + sqlite3VdbeAddOp2(pParse->pVdbe, OP_Integer, iParam, regStat+1); #elif SQLITE_DEBUG assert( iParam==STAT_GET_STAT1 ); #else UNUSED_PARAMETER( iParam ); #endif - sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4, regOut, - (char*)&statGetFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 1 + IsStat34); + assert( regOut!=regStat && regOut!=regStat+1 ); + sqlite3VdbeAddFunctionCall(pParse, 0, regStat, regOut, 1+IsStat4, + &statGetFuncdef, 0); } +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS +/* Add a comment to the most recent VDBE opcode that is the name +** of the k-th column of the pIdx index. +*/ +static void analyzeVdbeCommentIndexWithColumnName( + Vdbe *v, /* Prepared statement under construction */ + Index *pIdx, /* Index whose column is being loaded */ + int k /* Which column index */ +){ + int i; /* Index of column in the table */ + assert( k>=0 && knColumn ); + i = pIdx->aiColumn[k]; + if( NEVER(i==XN_ROWID) ){ + VdbeComment((v,"%s.rowid",pIdx->zName)); + }else if( i==XN_EXPR ){ + assert( pIdx->bHasExpr ); + VdbeComment((v,"%s.expr(%d)",pIdx->zName, k)); + }else{ + VdbeComment((v,"%s.%s", pIdx->zName, pIdx->pTable->aCol[i].zCnName)); + } +} +#else +# define analyzeVdbeCommentIndexWithColumnName(a,b,c) +#endif /* SQLITE_DEBUG */ + /* ** Generate code to do an analysis of all indices associated with ** a single table. @@ -102073,26 +117477,29 @@ static void analyzeOneTable( int iDb; /* Index of database containing pTab */ u8 needTableCnt = 1; /* True to count the table */ int regNewRowid = iMem++; /* Rowid for the inserted record */ - int regStat4 = iMem++; /* Register to hold Stat4Accum object */ + int regStat = iMem++; /* Register to hold StatAccum object */ int regChng = iMem++; /* Index of changed index field */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 int regRowid = iMem++; /* Rowid argument passed to stat_push() */ -#endif int regTemp = iMem++; /* Temporary use register */ + int regTemp2 = iMem++; /* Second temporary use register */ int regTabname = iMem++; /* Register containing table name */ int regIdxname = iMem++; /* Register containing index name */ int regStat1 = iMem++; /* Value for the stat column of sqlite_stat1 */ int regPrev = iMem; /* MUST BE LAST (see below) */ +#ifdef SQLITE_ENABLE_STAT4 + int doOnce = 1; /* Flag for a one-time computation */ +#endif #ifdef SQLITE_ENABLE_PREUPDATE_HOOK - Table *pStat1 = 0; + Table *pStat1 = 0; #endif - pParse->nMem = MAX(pParse->nMem, iMem); + sqlite3TouchRegister(pParse, iMem); + assert( sqlite3NoTempsInRange(pParse, regNewRowid, iMem) ); v = sqlite3GetVdbe(pParse); if( v==0 || NEVER(pTab==0) ){ return; } - if( pTab->tnum==0 ){ + if( !IsOrdinaryTable(pTab) ){ /* Do not gather statistics on views or virtual tables */ return; } @@ -102119,11 +117526,11 @@ static void analyzeOneTable( memcpy(pStat1->zName, "sqlite_stat1", 13); pStat1->nCol = 3; pStat1->iPKey = -1; - sqlite3VdbeAddOp4(pParse->pVdbe, OP_Noop, 0, 0, 0,(char*)pStat1,P4_DYNBLOB); + sqlite3VdbeAddOp4(pParse->pVdbe, OP_Noop, 0, 0, 0,(char*)pStat1,P4_DYNAMIC); } #endif - /* Establish a read-lock on the table at the shared-cache level. + /* Establish a read-lock on the table at the shared-cache level. ** Open a read-only cursor on the table. Also allocate a cursor number ** to use for scanning indexes (iIdxCur). No index cursor is opened at ** this time though. */ @@ -102189,11 +117596,11 @@ static void analyzeOneTable( ** end_of_scan: */ - /* Make sure there are enough memory cells allocated to accommodate + /* Make sure there are enough memory cells allocated to accommodate ** the regPrev array and a trailing rowid (the rowid slot is required - ** when building a record to insert into the sample column of + ** when building a record to insert into the sample column of ** the sqlite_stat4 table. */ - pParse->nMem = MAX(pParse->nMem, regPrev+nColTest); + sqlite3TouchRegister(pParse, regPrev+nColTest); /* Open a read-only cursor on the index being analyzed. */ assert( iDb==sqlite3SchemaToIndex(db, pIdx->pSchema) ); @@ -102202,23 +117609,31 @@ static void analyzeOneTable( VdbeComment((v, "%s", pIdx->zName)); /* Invoke the stat_init() function. The arguments are: - ** + ** ** (1) the number of columns in the index including the rowid ** (or for a WITHOUT ROWID table, the number of PK columns), ** (2) the number of columns in the key without the rowid/pk - ** (3) the number of rows in the index, - ** - ** - ** The third argument is only used for STAT3 and STAT4 + ** (3) estimated number of rows in the index, */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat4+3); + sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat+1); + assert( regRowid==regStat+2 ); + sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regRowid); +#ifdef SQLITE_ENABLE_STAT4 + if( OptimizationEnabled(db, SQLITE_Stat4) ){ + sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regTemp); + addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur); + VdbeCoverage(v); + }else #endif - sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat4+1); - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regStat4+2); - sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4+1, regStat4, - (char*)&statInitFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 2+IsStat34); + { + addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Count, iIdxCur, regTemp, 1); + } + assert( regTemp2==regStat+4 ); + sqlite3VdbeAddOp2(v, OP_Integer, db->nAnalysisLimit, regTemp2); + sqlite3VdbeAddFunctionCall(pParse, 0, regStat+1, regStat, 4, + &statInitFuncdef, 0); /* Implementation of the following: ** @@ -102228,13 +117643,11 @@ static void analyzeOneTable( ** goto next_push_0; ** */ - addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur); - VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Integer, 0, regChng); addrNextRow = sqlite3VdbeCurrentAddr(v); if( nColTest>0 ){ - int endDistinctTest = sqlite3VdbeMakeLabel(v); + int endDistinctTest = sqlite3VdbeMakeLabel(pParse); int *aGotoChng; /* Array of jump instruction addresses */ aGotoChng = sqlite3DbMallocRawNN(db, sizeof(int)*nColTest); if( aGotoChng==0 ) continue; @@ -102253,7 +117666,7 @@ static void analyzeOneTable( addrNextRow = sqlite3VdbeCurrentAddr(v); if( nColTest==1 && pIdx->nKeyCol==1 && IsUniqueIndex(pIdx) ){ /* For a single-column UNIQUE index, once we have found a non-NULL - ** row, we know that all the rest will be distinct, so skip + ** row, we know that all the rest will be distinct, so skip ** subsequent distinctness tests. */ sqlite3VdbeAddOp2(v, OP_NotNull, regPrev, endDistinctTest); VdbeCoverage(v); @@ -102262,15 +117675,16 @@ static void analyzeOneTable( char *pColl = (char*)sqlite3LocateCollSeq(pParse, pIdx->azColl[i]); sqlite3VdbeAddOp2(v, OP_Integer, i, regChng); sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regTemp); - aGotoChng[i] = + analyzeVdbeCommentIndexWithColumnName(v,pIdx,i); + aGotoChng[i] = sqlite3VdbeAddOp4(v, OP_Ne, regTemp, 0, regPrev+i, pColl, P4_COLLSEQ); sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); VdbeCoverage(v); } sqlite3VdbeAddOp2(v, OP_Integer, nColTest, regChng); sqlite3VdbeGoto(v, endDistinctTest); - - + + /* ** chng_addr_0: ** regPrev(0) = idx(0) @@ -102282,44 +117696,60 @@ static void analyzeOneTable( for(i=0; ipTable); - int j, k, regKey; - regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol); - for(j=0; jnKeyCol; j++){ - k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); - assert( k>=0 && knColumn ); - sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j); - VdbeComment((v, "%s", pTab->aCol[pPk->aiColumn[j]].zName)); +#ifdef SQLITE_ENABLE_STAT4 + if( OptimizationEnabled(db, SQLITE_Stat4) ){ + assert( regRowid==(regStat+2) ); + if( HasRowid(pTab) ){ + sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, regRowid); + }else{ + Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable); + int j, k, regKey; + regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol); + for(j=0; jnKeyCol; j++){ + k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[j]); + assert( k>=0 && knColumn ); + sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j); + analyzeVdbeCommentIndexWithColumnName(v,pIdx,k); + } + sqlite3VdbeAddOp3(v, OP_MakeRecord, regKey, pPk->nKeyCol, regRowid); + sqlite3ReleaseTempRange(pParse, regKey, pPk->nKeyCol); } - sqlite3VdbeAddOp3(v, OP_MakeRecord, regKey, pPk->nKeyCol, regRowid); - sqlite3ReleaseTempRange(pParse, regKey, pPk->nKeyCol); } #endif - assert( regChng==(regStat4+1) ); - sqlite3VdbeAddOp4(v, OP_Function0, 1, regStat4, regTemp, - (char*)&statPushFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 2+IsStat34); - sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v); + assert( regChng==(regStat+1) ); + { + sqlite3VdbeAddFunctionCall(pParse, 1, regStat, regTemp, 2+IsStat4, + &statPushFuncdef, 0); + if( db->nAnalysisLimit ){ + int j1, j2, j3; + j1 = sqlite3VdbeAddOp1(v, OP_IsNull, regTemp); VdbeCoverage(v); + j2 = sqlite3VdbeAddOp1(v, OP_If, regTemp); VdbeCoverage(v); + j3 = sqlite3VdbeAddOp4Int(v, OP_SeekGT, iIdxCur, 0, regPrev, 1); + VdbeCoverage(v); + sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, j2); + sqlite3VdbeJumpHere(v, j3); + }else{ + sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v); + } + } /* Add the entry to the stat1 table. */ - callStatGet(v, regStat4, STAT_GET_STAT1, regStat1); + callStatGet(pParse, regStat, STAT_GET_STAT1, regStat1); assert( "BBB"[0]==SQLITE_AFF_TEXT ); sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0); sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid); @@ -102329,9 +117759,9 @@ static void analyzeOneTable( #endif sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - /* Add the entries to the stat3 or stat4 table. */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - { + /* Add the entries to the stat4 table. */ +#ifdef SQLITE_ENABLE_STAT4 + if( OptimizationEnabled(db, SQLITE_Stat4) && db->nAnalysisLimit==0 ){ int regEq = regStat1; int regLt = regStat1+1; int regDLt = regStat1+2; @@ -102342,35 +117772,56 @@ static void analyzeOneTable( int addrIsNull; u8 seekOp = HasRowid(pTab) ? OP_NotExists : OP_NotFound; - pParse->nMem = MAX(pParse->nMem, regCol+nCol); + if( doOnce ){ + int mxCol = nCol; + Index *pX; + + /* Compute the maximum number of columns in any index */ + for(pX=pTab->pIndex; pX; pX=pX->pNext){ + int nColX; /* Number of columns in pX */ + if( !HasRowid(pTab) && IsPrimaryKeyIndex(pX) ){ + nColX = pX->nKeyCol; + }else{ + nColX = pX->nColumn; + } + if( nColX>mxCol ) mxCol = nColX; + } + + /* Allocate space to compute results for the largest index */ + sqlite3TouchRegister(pParse, regCol+mxCol); + doOnce = 0; +#ifdef SQLITE_DEBUG + /* Verify that the call to sqlite3ClearTempRegCache() below + ** really is needed. + ** https://sqlite.org/forum/forumpost/83cb4a95a0 (2023-03-25) + */ + testcase( !sqlite3NoTempsInRange(pParse, regEq, regCol+mxCol) ); +#endif + sqlite3ClearTempRegCache(pParse); /* tag-20230325-1 */ + assert( sqlite3NoTempsInRange(pParse, regEq, regCol+mxCol) ); + } + assert( sqlite3NoTempsInRange(pParse, regEq, regCol+nCol) ); addrNext = sqlite3VdbeCurrentAddr(v); - callStatGet(v, regStat4, STAT_GET_ROWID, regSampleRowid); + callStatGet(pParse, regStat, STAT_GET_ROWID, regSampleRowid); addrIsNull = sqlite3VdbeAddOp1(v, OP_IsNull, regSampleRowid); VdbeCoverage(v); - callStatGet(v, regStat4, STAT_GET_NEQ, regEq); - callStatGet(v, regStat4, STAT_GET_NLT, regLt); - callStatGet(v, regStat4, STAT_GET_NDLT, regDLt); + callStatGet(pParse, regStat, STAT_GET_NEQ, regEq); + callStatGet(pParse, regStat, STAT_GET_NLT, regLt); + callStatGet(pParse, regStat, STAT_GET_NDLT, regDLt); sqlite3VdbeAddOp4Int(v, seekOp, iTabCur, addrNext, regSampleRowid, 0); - /* We know that the regSampleRowid row exists because it was read by - ** the previous loop. Thus the not-found jump of seekOp will never - ** be taken */ - VdbeCoverageNeverTaken(v); -#ifdef SQLITE_ENABLE_STAT3 - sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, 0, regSample); -#else + VdbeCoverage(v); for(i=0; itblHash); k; k=sqliteHashNext(k)){ Table *pTab = (Table*)sqliteHashData(k); analyzeOneTable(pParse, pTab, 0, iStatCur, iMem, iTab); +#ifdef SQLITE_ENABLE_STAT4 + iMem = sqlite3FirstAvailableRegister(pParse, iMem); +#else + assert( iMem==sqlite3FirstAvailableRegister(pParse,iMem) ); +#endif } loadAnalysis(pParse, iDb); } @@ -102545,7 +118001,7 @@ static void decodeIntArray( int i; tRowcnt v; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 if( z==0 ) z = ""; #else assert( z!=0 ); @@ -102556,7 +118012,7 @@ static void decodeIntArray( v = v*10 + c - '0'; z++; } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 if( aOut ) aOut[i] = v; if( aLog ) aLog[i] = sqlite3LogEst(v); #else @@ -102567,7 +118023,7 @@ static void decodeIntArray( #endif if( *z==' ' ) z++; } -#ifndef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifndef SQLITE_ENABLE_STAT4 assert( pIndex!=0 ); { #else if( pIndex ){ @@ -102578,7 +118034,9 @@ static void decodeIntArray( if( sqlite3_strglob("unordered*", z)==0 ){ pIndex->bUnordered = 1; }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){ - pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3)); + int sz = sqlite3Atoi(z+3); + if( sz<2 ) sz = 2; + pIndex->szIdxRow = sqlite3LogEst(sz); }else if( sqlite3_strglob("noskipscan*", z)==0 ){ pIndex->noSkipScan = 1; } @@ -102595,7 +118053,7 @@ static void decodeIntArray( /* ** This callback is invoked once for each index when reading the -** sqlite_stat1 table. +** sqlite_stat1 table. ** ** argv[0] = name of the table ** argv[1] = name of the index (might be NULL) @@ -102632,8 +118090,8 @@ static int analysisLoader(void *pData, int argc, char **argv, char **NotUsed){ if( pIndex ){ tRowcnt *aiRowEst = 0; int nCol = pIndex->nKeyCol+1; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - /* Index.aiRowEst may already be set here if there are duplicate +#ifdef SQLITE_ENABLE_STAT4 + /* Index.aiRowEst may already be set here if there are duplicate ** sqlite_stat1 entries for this index. In that case just clobber ** the old data with the new instead of allocating a new array. */ if( pIndex->aiRowEst==0 ){ @@ -102668,7 +118126,9 @@ static int analysisLoader(void *pData, int argc, char **argv, char **NotUsed){ ** and its contents. */ SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + assert( db!=0 ); + assert( pIdx!=0 ); +#ifdef SQLITE_ENABLE_STAT4 if( pIdx->aSample ){ int j; for(j=0; jnSample; j++){ @@ -102677,20 +118137,20 @@ SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){ } sqlite3DbFree(db, pIdx->aSample); } - if( db && db->pnBytesFreed==0 ){ + if( db->pnBytesFreed==0 ){ pIdx->nSample = 0; pIdx->aSample = 0; } #else UNUSED_PARAMETER(db); UNUSED_PARAMETER(pIdx); -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Populate the pIdx->aAvgEq[] array based on the samples currently -** stored in pIdx->aSample[]. +** stored in pIdx->aSample[]. */ static void initAvgEq(Index *pIdx){ if( pIdx ){ @@ -102726,12 +118186,12 @@ static void initAvgEq(Index *pIdx){ pIdx->nRowEst0 = nRow; /* Set nSum to the number of distinct (iCol+1) field prefixes that - ** occur in the stat4 table for this index. Set sumEq to the sum of - ** the nEq values for column iCol for the same set (adding the value + ** occur in the stat4 table for this index. Set sumEq to the sum of + ** the nEq values for column iCol for the same set (adding the value ** only once where there exist duplicate prefixes). */ for(i=0; inSample-1) - || aSample[i].anDLt[iCol]!=aSample[i+1].anDLt[iCol] + || aSample[i].anDLt[iCol]!=aSample[i+1].anDLt[iCol] ){ sumEq += aSample[i].anEq[iCol]; nSum100 += 100; @@ -102765,12 +118225,11 @@ static Index *findIndexOrPrimaryKey( } /* -** Load the content from either the sqlite_stat4 or sqlite_stat3 table +** Load the content from either the sqlite_stat4 ** into the relevant Index.aSample[] arrays. ** ** Arguments zSql1 and zSql2 must point to SQL statements that return -** data equivalent to the following (statements are different for stat3, -** see the caller of this function for details): +** data equivalent to the following: ** ** zSql1: SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx ** zSql2: SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat4 @@ -102779,7 +118238,6 @@ static Index *findIndexOrPrimaryKey( */ static int loadStatTbl( sqlite3 *db, /* Database handle */ - int bStat3, /* Assume single column records only */ const char *zSql1, /* SQL statement 1 (see above) */ const char *zSql2, /* SQL statement 2 (see above) */ const char *zDb /* Database name (e.g. "main") */ @@ -102813,19 +118271,20 @@ static int loadStatTbl( if( zIndex==0 ) continue; nSample = sqlite3_column_int(pStmt, 1); pIdx = findIndexOrPrimaryKey(db, zIndex, zDb); - assert( pIdx==0 || bStat3 || pIdx->nSample==0 ); - /* Index.nSample is non-zero at this point if data has already been - ** loaded from the stat4 table. In this case ignore stat3 data. */ - if( pIdx==0 || pIdx->nSample ) continue; - if( bStat3==0 ){ - assert( !HasRowid(pIdx->pTable) || pIdx->nColumn==pIdx->nKeyCol+1 ); - if( !HasRowid(pIdx->pTable) && IsPrimaryKeyIndex(pIdx) ){ - nIdxCol = pIdx->nKeyCol; - }else{ - nIdxCol = pIdx->nColumn; - } + assert( pIdx==0 || pIdx->nSample==0 ); + if( pIdx==0 ) continue; + if( pIdx->aSample!=0 ){ + /* The same index appears in sqlite_stat4 under multiple names */ + continue; + } + assert( !HasRowid(pIdx->pTable) || pIdx->nColumn==pIdx->nKeyCol+1 ); + if( !HasRowid(pIdx->pTable) && IsPrimaryKeyIndex(pIdx) ){ + nIdxCol = pIdx->nKeyCol; + }else{ + nIdxCol = pIdx->nColumn; } pIdx->nSampleCol = nIdxCol; + pIdx->mxSample = nSample; nByte = sizeof(IndexSample) * nSample; nByte += sizeof(tRowcnt) * nIdxCol * 3 * nSample; nByte += nIdxCol * sizeof(tRowcnt); /* Space for Index.aAvgEq[] */ @@ -102837,6 +118296,7 @@ static int loadStatTbl( } pSpace = (tRowcnt*)&pIdx->aSample[nSample]; pIdx->aAvgEq = pSpace; pSpace += nIdxCol; + pIdx->pTable->tabFlags |= TF_HasStat4; for(i=0; iaSample[i].anEq = pSpace; pSpace += nIdxCol; pIdx->aSample[i].anLt = pSpace; pSpace += nIdxCol; @@ -102864,10 +118324,14 @@ static int loadStatTbl( if( zIndex==0 ) continue; pIdx = findIndexOrPrimaryKey(db, zIndex, zDb); if( pIdx==0 ) continue; - /* This next condition is true if data has already been loaded from - ** the sqlite_stat4 table. In this case ignore stat3 data. */ + if( pIdx->nSample>=pIdx->mxSample ){ + /* Too many slots used because the same index appears in + ** sqlite_stat4 using multiple names */ + continue; + } + /* This next condition is true if data has already been loaded from + ** the sqlite_stat4 table. */ nCol = pIdx->nSampleCol; - if( bStat3 && nCol>1 ) continue; if( pIdx!=pPrevIdx ){ initAvgEq(pPrevIdx); pPrevIdx = pIdx; @@ -102877,14 +118341,15 @@ static int loadStatTbl( decodeIntArray((char*)sqlite3_column_text(pStmt,2),nCol,pSample->anLt,0,0); decodeIntArray((char*)sqlite3_column_text(pStmt,3),nCol,pSample->anDLt,0,0); - /* Take a copy of the sample. Add two 0x00 bytes the end of the buffer. + /* Take a copy of the sample. Add 8 extra 0x00 bytes the end of the buffer. ** This is in case the sample record is corrupted. In that case, the ** sqlite3VdbeRecordCompare() may read up to two varints past the ** end of the allocated buffer before it realizes it is dealing with - ** a corrupt record. Adding the two 0x00 bytes prevents this from causing + ** a corrupt record. Or it might try to read a large integer from the + ** buffer. In any case, eight 0x00 bytes prevents this from causing ** a buffer overread. */ pSample->n = sqlite3_column_bytes(pStmt, 4); - pSample->p = sqlite3DbMallocZero(db, pSample->n + 2); + pSample->p = sqlite3DbMallocZero(db, pSample->n + 8); if( pSample->p==0 ){ sqlite3_finalize(pStmt); return SQLITE_NOMEM_BKPT; @@ -102900,45 +118365,40 @@ static int loadStatTbl( } /* -** Load content from the sqlite_stat4 and sqlite_stat3 tables into +** Load content from the sqlite_stat4 table into ** the Index.aSample[] arrays of all indices. */ static int loadStat4(sqlite3 *db, const char *zDb){ int rc = SQLITE_OK; /* Result codes from subroutines */ + const Table *pStat4; assert( db->lookaside.bDisable ); - if( sqlite3FindTable(db, "sqlite_stat4", zDb) ){ - rc = loadStatTbl(db, 0, - "SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx", + if( OptimizationEnabled(db, SQLITE_Stat4) + && (pStat4 = sqlite3FindTable(db, "sqlite_stat4", zDb))!=0 + && IsOrdinaryTable(pStat4) + ){ + rc = loadStatTbl(db, + "SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx COLLATE nocase", "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat4", zDb ); } - - if( rc==SQLITE_OK && sqlite3FindTable(db, "sqlite_stat3", zDb) ){ - rc = loadStatTbl(db, 1, - "SELECT idx,count(*) FROM %Q.sqlite_stat3 GROUP BY idx", - "SELECT idx,neq,nlt,ndlt,sqlite_record(sample) FROM %Q.sqlite_stat3", - zDb - ); - } - return rc; } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ /* -** Load the content of the sqlite_stat1 and sqlite_stat3/4 tables. The +** Load the content of the sqlite_stat1 and sqlite_stat4 tables. The ** contents of sqlite_stat1 are used to populate the Index.aiRowEst[] -** arrays. The contents of sqlite_stat3/4 are used to populate the +** arrays. The contents of sqlite_stat4 are used to populate the ** Index.aSample[] arrays. ** ** If the sqlite_stat1 table is not present in the database, SQLITE_ERROR -** is returned. In this case, even if SQLITE_ENABLE_STAT3/4 was defined -** during compilation and the sqlite_stat3/4 table is present, no data is +** is returned. In this case, even if SQLITE_ENABLE_STAT4 was defined +** during compilation and the sqlite_stat4 table is present, no data is ** read from it. ** -** If SQLITE_ENABLE_STAT3/4 was defined during compilation and the +** If SQLITE_ENABLE_STAT4 was defined during compilation and the ** sqlite_stat4 table is not present in the database, SQLITE_ERROR is ** returned. However, in this case, data is read from the sqlite_stat1 ** table (if it is present) before returning. @@ -102953,6 +118413,7 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ char *zSql; int rc = SQLITE_OK; Schema *pSchema = db->aDb[iDb].pSchema; + const Table *pStat1; assert( iDb>=0 && iDbnDb ); assert( db->aDb[iDb].pBt!=0 ); @@ -102966,7 +118427,7 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){ Index *pIdx = sqliteHashData(i); pIdx->hasStat1 = 0; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 sqlite3DeleteIndexSamples(db, pIdx); pIdx->aSample = 0; #endif @@ -102975,8 +118436,10 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ /* Load new statistics out of the sqlite_stat1 table */ sInfo.db = db; sInfo.zDatabase = db->aDb[iDb].zDbSName; - if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)!=0 ){ - zSql = sqlite3MPrintf(db, + if( (pStat1 = sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)) + && IsOrdinaryTable(pStat1) + ){ + zSql = sqlite3MPrintf(db, "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase); if( zSql==0 ){ rc = SQLITE_NOMEM_BKPT; @@ -102994,11 +118457,11 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ } /* Load the statistics from the sqlite_stat4 table. */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - if( rc==SQLITE_OK && OptimizationEnabled(db, SQLITE_Stat34) ){ - db->lookaside.bDisable++; +#ifdef SQLITE_ENABLE_STAT4 + if( rc==SQLITE_OK ){ + DisableLookaside; rc = loadStat4(db, sInfo.zDatabase); - db->lookaside.bDisable--; + EnableLookaside; } for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){ Index *pIdx = sqliteHashData(i); @@ -103065,6 +118528,17 @@ static int resolveAttachExpr(NameContext *pName, Expr *pExpr) return rc; } +/* +** Return true if zName points to a name that may be used to refer to +** database iDb attached to handle db. +*/ +SQLITE_PRIVATE int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName){ + return ( + sqlite3StrICmp(db->aDb[iDb].zDbSName, zName)==0 + || (iDb==0 && sqlite3StrICmp("main", zName)==0) + ); +} + /* ** An SQL user-function registered to do the work of an ATTACH statement. The ** three arguments to the function come directly from an attach statement: @@ -103094,7 +118568,7 @@ static void attachFunc( char *zErr = 0; unsigned int flags; Db *aNew; /* New array of Db pointers */ - Db *pNew; /* Db object for the newly attached database */ + Db *pNew = 0; /* Db object for the newly attached database */ char *zErrDyn = 0; sqlite3_vfs *pVfs; @@ -103104,7 +118578,7 @@ static void attachFunc( if( zFile==0 ) zFile = ""; if( zName==0 ) zName = ""; -#ifdef SQLITE_ENABLE_DESERIALIZE +#ifndef SQLITE_OMIT_DESERIALIZE # define REOPEN_AS_MEMDB(db) (db->init.reopenMemdb) #else # define REOPEN_AS_MEMDB(db) (0) @@ -103114,13 +118588,26 @@ static void attachFunc( /* This is not a real ATTACH. Instead, this routine is being called ** from sqlite3_deserialize() to close database db->init.iDb and ** reopen it as a MemDB */ + Btree *pNewBt = 0; pVfs = sqlite3_vfs_find("memdb"); if( pVfs==0 ) return; - pNew = &db->aDb[db->init.iDb]; - if( pNew->pBt ) sqlite3BtreeClose(pNew->pBt); - pNew->pBt = 0; - pNew->pSchema = 0; - rc = sqlite3BtreeOpen(pVfs, "x", db, &pNew->pBt, 0, SQLITE_OPEN_MAIN_DB); + rc = sqlite3BtreeOpen(pVfs, "x\0", db, &pNewBt, 0, SQLITE_OPEN_MAIN_DB); + if( rc==SQLITE_OK ){ + Schema *pNewSchema = sqlite3SchemaGet(db, pNewBt); + if( pNewSchema ){ + /* Both the Btree and the new Schema were allocated successfully. + ** Close the old db and update the aDb[] slot with the new memdb + ** values. */ + pNew = &db->aDb[db->init.iDb]; + if( ALWAYS(pNew->pBt) ) sqlite3BtreeClose(pNew->pBt); + pNew->pBt = pNewBt; + pNew->pSchema = pNewSchema; + }else{ + sqlite3BtreeClose(pNewBt); + rc = SQLITE_NOMEM; + } + } + if( rc ) goto attach_error; }else{ /* This is a real ATTACH ** @@ -103131,20 +118618,19 @@ static void attachFunc( ** * Specified database name already being used. */ if( db->nDb>=db->aLimit[SQLITE_LIMIT_ATTACHED]+2 ){ - zErrDyn = sqlite3MPrintf(db, "too many attached databases - max %d", + zErrDyn = sqlite3MPrintf(db, "too many attached databases - max %d", db->aLimit[SQLITE_LIMIT_ATTACHED] ); goto attach_error; } for(i=0; inDb; i++){ - char *z = db->aDb[i].zDbSName; - assert( z && zName ); - if( sqlite3StrICmp(z, zName)==0 ){ + assert( zName ); + if( sqlite3DbIsNamed(db, i, zName) ){ zErrDyn = sqlite3MPrintf(db, "database %s is already in use", zName); goto attach_error; } } - + /* Allocate the new entry in the db->aDb[] array and initialize the schema ** hash tables. */ @@ -103159,7 +118645,7 @@ static void attachFunc( db->aDb = aNew; pNew = &db->aDb[db->nDb]; memset(pNew, 0, sizeof(*pNew)); - + /* Open the database file. If the btree is successfully opened, use ** it to obtain the database schema. At this point the schema may ** or may not be initialized. @@ -103175,8 +118661,8 @@ static void attachFunc( assert( pVfs ); flags |= SQLITE_OPEN_MAIN_DB; rc = sqlite3BtreeOpen(pVfs, zPath, db, &pNew->pBt, 0, flags); - sqlite3_free( zPath ); db->nDb++; + pNew->zDbSName = sqlite3DbStrDup(db, zName); } db->noSharedCache = 0; if( rc==SQLITE_CONSTRAINT ){ @@ -103188,7 +118674,7 @@ static void attachFunc( if( !pNew->pSchema ){ rc = SQLITE_NOMEM_BKPT; }else if( pNew->pSchema->file_format && pNew->pSchema->enc!=ENC(db) ){ - zErrDyn = sqlite3MPrintf(db, + zErrDyn = sqlite3MPrintf(db, "attached databases must use the same text encoding as main database"); rc = SQLITE_ERROR; } @@ -103204,46 +118690,13 @@ static void attachFunc( sqlite3BtreeLeave(pNew->pBt); } pNew->safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1; - if( !REOPEN_AS_MEMDB(db) ) pNew->zDbSName = sqlite3DbStrDup(db, zName); if( rc==SQLITE_OK && pNew->zDbSName==0 ){ rc = SQLITE_NOMEM_BKPT; } - - -#ifdef SQLITE_HAS_CODEC - if( rc==SQLITE_OK ){ - extern int sqlite3CodecAttach(sqlite3*, int, const void*, int); - extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*); - int nKey; - char *zKey; - int t = sqlite3_value_type(argv[2]); - switch( t ){ - case SQLITE_INTEGER: - case SQLITE_FLOAT: - zErrDyn = sqlite3DbStrDup(db, "Invalid key value"); - rc = SQLITE_ERROR; - break; - - case SQLITE_TEXT: - case SQLITE_BLOB: - nKey = sqlite3_value_bytes(argv[2]); - zKey = (char *)sqlite3_value_blob(argv[2]); - rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); - break; - - case SQLITE_NULL: - /* No key specified. Use the key from the main database */ - sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey); - if( nKey || sqlite3BtreeGetOptimalReserve(db->aDb[0].pBt)>0 ){ - rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); - } - break; - } - } -#endif + sqlite3_free_filename( zPath ); /* If the file was opened successfully, read the schema for the new database. - ** If this fails, or if opening the file failed, then close the file and + ** If this fails, or if opening the file failed, then close the file and ** remove the entry from the db->aDb[] array. i.e. put everything back the ** way we found it. */ @@ -103251,12 +118704,14 @@ static void attachFunc( sqlite3BtreeEnterAll(db); db->init.iDb = 0; db->mDbFlags &= ~(DBFLAG_SchemaKnownOk); - rc = sqlite3Init(db, &zErrDyn); + if( !REOPEN_AS_MEMDB(db) ){ + rc = sqlite3Init(db, &zErrDyn); + } sqlite3BtreeLeaveAll(db); assert( zErrDyn==0 || rc!=SQLITE_OK ); } #ifdef SQLITE_USER_AUTHENTICATION - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK && !REOPEN_AS_MEMDB(db) ){ u8 newAuth = 0; rc = sqlite3UserAuthCheckLogin(db, zName, &newAuth); if( newAuthauth.authLevel ){ @@ -103265,7 +118720,7 @@ static void attachFunc( } #endif if( rc ){ - if( !REOPEN_AS_MEMDB(db) ){ + if( ALWAYS(!REOPEN_AS_MEMDB(db)) ){ int iDb = db->nDb - 1; assert( iDb>=2 ); if( db->aDb[iDb].pBt ){ @@ -103285,7 +118740,7 @@ static void attachFunc( } goto attach_error; } - + return; attach_error: @@ -103314,6 +118769,7 @@ static void detachFunc( sqlite3 *db = sqlite3_context_db_handle(context); int i; Db *pDb = 0; + HashElem *pEntry; char zErr[128]; UNUSED_PARAMETER(NotUsed); @@ -103322,7 +118778,7 @@ static void detachFunc( for(i=0; inDb; i++){ pDb = &db->aDb[i]; if( pDb->pBt==0 ) continue; - if( sqlite3StrICmp(pDb->zDbSName, zName)==0 ) break; + if( sqlite3DbIsNamed(db, i, zName) ) break; } if( i>=db->nDb ){ @@ -103333,11 +118789,25 @@ static void detachFunc( sqlite3_snprintf(sizeof(zErr),zErr, "cannot detach database %s", zName); goto detach_error; } - if( sqlite3BtreeIsInReadTrans(pDb->pBt) || sqlite3BtreeIsInBackup(pDb->pBt) ){ + if( sqlite3BtreeTxnState(pDb->pBt)!=SQLITE_TXN_NONE + || sqlite3BtreeIsInBackup(pDb->pBt) + ){ sqlite3_snprintf(sizeof(zErr),zErr, "database %s is locked", zName); goto detach_error; } + /* If any TEMP triggers reference the schema being detached, move those + ** triggers to reference the TEMP schema itself. */ + assert( db->aDb[1].pSchema ); + pEntry = sqliteHashFirst(&db->aDb[1].pSchema->trigHash); + while( pEntry ){ + Trigger *pTrig = (Trigger*)sqliteHashData(pEntry); + if( pTrig->pTabSchema==pDb->pSchema ){ + pTrig->pTabSchema = pTrig->pSchema; + } + pEntry = sqliteHashNext(pEntry); + } + sqlite3BtreeClose(pDb->pBt); pDb->pBt = 0; pDb->pSchema = 0; @@ -103367,22 +118837,25 @@ static void codeAttach( sqlite3* db = pParse->db; int regArgs; + if( SQLITE_OK!=sqlite3ReadSchema(pParse) ) goto attach_end; + if( pParse->nErr ) goto attach_end; memset(&sName, 0, sizeof(NameContext)); sName.pParse = pParse; - if( - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pFilename)) || - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pDbname)) || - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pKey)) + if( + SQLITE_OK!=resolveAttachExpr(&sName, pFilename) || + SQLITE_OK!=resolveAttachExpr(&sName, pDbname) || + SQLITE_OK!=resolveAttachExpr(&sName, pKey) ){ goto attach_end; } #ifndef SQLITE_OMIT_AUTHORIZATION - if( pAuthArg ){ + if( ALWAYS(pAuthArg) ){ char *zAuthArg; if( pAuthArg->op==TK_STRING ){ + assert( !ExprHasProperty(pAuthArg, EP_IntValue) ); zAuthArg = pAuthArg->u.zToken; }else{ zAuthArg = 0; @@ -103403,18 +118876,15 @@ static void codeAttach( assert( v || db->mallocFailed ); if( v ){ - sqlite3VdbeAddOp4(v, OP_Function0, 0, regArgs+3-pFunc->nArg, regArgs+3, - (char *)pFunc, P4_FUNCDEF); - assert( pFunc->nArg==-1 || (pFunc->nArg&0xff)==pFunc->nArg ); - sqlite3VdbeChangeP5(v, (u8)(pFunc->nArg)); - + sqlite3VdbeAddFunctionCall(pParse, 0, regArgs+3-pFunc->nArg, regArgs+3, + pFunc->nArg, pFunc, 0); /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this ** statement only). For DETACH, set it to false (expire all existing ** statements). */ sqlite3VdbeAddOp1(v, OP_Expire, (type==SQLITE_ATTACH)); } - + attach_end: sqlite3ExprDelete(db, pFilename); sqlite3ExprDelete(db, pDbname); @@ -103434,6 +118904,7 @@ SQLITE_PRIVATE void sqlite3Detach(Parse *pParse, Expr *pDbname){ 0, /* pNext */ detachFunc, /* xSFunc */ 0, /* xFinalize */ + 0, 0, /* xValue, xInverse */ "sqlite_detach", /* zName */ {0} }; @@ -103453,6 +118924,7 @@ SQLITE_PRIVATE void sqlite3Attach(Parse *pParse, Expr *p, Expr *pDbname, Expr *p 0, /* pNext */ attachFunc, /* xSFunc */ 0, /* xFinalize */ + 0, 0, /* xValue, xInverse */ "sqlite_attach", /* zName */ {0} }; @@ -103460,6 +118932,69 @@ SQLITE_PRIVATE void sqlite3Attach(Parse *pParse, Expr *p, Expr *pDbname, Expr *p } #endif /* SQLITE_OMIT_ATTACH */ +/* +** Expression callback used by sqlite3FixAAAA() routines. +*/ +static int fixExprCb(Walker *p, Expr *pExpr){ + DbFixer *pFix = p->u.pFix; + if( !pFix->bTemp ) ExprSetProperty(pExpr, EP_FromDDL); + if( pExpr->op==TK_VARIABLE ){ + if( pFix->pParse->db->init.busy ){ + pExpr->op = TK_NULL; + }else{ + sqlite3ErrorMsg(pFix->pParse, "%s cannot use variables", pFix->zType); + return WRC_Abort; + } + } + return WRC_Continue; +} + +/* +** Select callback used by sqlite3FixAAAA() routines. +*/ +static int fixSelectCb(Walker *p, Select *pSelect){ + DbFixer *pFix = p->u.pFix; + int i; + SrcItem *pItem; + sqlite3 *db = pFix->pParse->db; + int iDb = sqlite3FindDbName(db, pFix->zDb); + SrcList *pList = pSelect->pSrc; + + if( NEVER(pList==0) ) return WRC_Continue; + for(i=0, pItem=pList->a; inSrc; i++, pItem++){ + if( pFix->bTemp==0 ){ + if( pItem->zDatabase ){ + if( iDb!=sqlite3FindDbName(db, pItem->zDatabase) ){ + sqlite3ErrorMsg(pFix->pParse, + "%s %T cannot reference objects in database %s", + pFix->zType, pFix->pName, pItem->zDatabase); + return WRC_Abort; + } + sqlite3DbFree(db, pItem->zDatabase); + pItem->zDatabase = 0; + pItem->fg.notCte = 1; + } + pItem->pSchema = pFix->pSchema; + pItem->fg.fromDDL = 1; + } +#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) + if( pList->a[i].fg.isUsing==0 + && sqlite3WalkExpr(&pFix->w, pList->a[i].u3.pOn) + ){ + return WRC_Abort; + } +#endif + } + if( pSelect->pWith ){ + for(i=0; ipWith->nCte; i++){ + if( sqlite3WalkSelect(p, pSelect->pWith->a[i].pSelect) ){ + return WRC_Abort; + } + } + } + return WRC_Continue; +} + /* ** Initialize a DbFixer structure. This routine must be called prior ** to passing the structure to one of the sqliteFixAAAA() routines below. @@ -103471,16 +119006,21 @@ SQLITE_PRIVATE void sqlite3FixInit( const char *zType, /* "view", "trigger", or "index" */ const Token *pName /* Name of the view, trigger, or index */ ){ - sqlite3 *db; - - db = pParse->db; + sqlite3 *db = pParse->db; assert( db->nDb>iDb ); pFix->pParse = pParse; pFix->zDb = db->aDb[iDb].zDbSName; pFix->pSchema = db->aDb[iDb].pSchema; pFix->zType = zType; pFix->pName = pName; - pFix->bVarOnly = (iDb==1); + pFix->bTemp = (iDb==1); + pFix->w.pParse = pParse; + pFix->w.xExprCallback = fixExprCb; + pFix->w.xSelectCallback = fixSelectCb; + pFix->w.xSelectCallback2 = sqlite3WalkWinDefnDummyCallback; + pFix->w.walkerDepth = 0; + pFix->w.eCode = 0; + pFix->w.u.pFix = pFix; } /* @@ -103501,112 +119041,27 @@ SQLITE_PRIVATE int sqlite3FixSrcList( DbFixer *pFix, /* Context of the fixation */ SrcList *pList /* The Source list to check and modify */ ){ - int i; - const char *zDb; - struct SrcList_item *pItem; - - if( NEVER(pList==0) ) return 0; - zDb = pFix->zDb; - for(i=0, pItem=pList->a; inSrc; i++, pItem++){ - if( pFix->bVarOnly==0 ){ - if( pItem->zDatabase && sqlite3StrICmp(pItem->zDatabase, zDb) ){ - sqlite3ErrorMsg(pFix->pParse, - "%s %T cannot reference objects in database %s", - pFix->zType, pFix->pName, pItem->zDatabase); - return 1; - } - sqlite3DbFree(pFix->pParse->db, pItem->zDatabase); - pItem->zDatabase = 0; - pItem->pSchema = pFix->pSchema; - } -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) - if( sqlite3FixSelect(pFix, pItem->pSelect) ) return 1; - if( sqlite3FixExpr(pFix, pItem->pOn) ) return 1; -#endif - if( pItem->fg.isTabFunc && sqlite3FixExprList(pFix, pItem->u1.pFuncArg) ){ - return 1; - } + int res = 0; + if( pList ){ + Select s; + memset(&s, 0, sizeof(s)); + s.pSrc = pList; + res = sqlite3WalkSelect(&pFix->w, &s); } - return 0; + return res; } #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) SQLITE_PRIVATE int sqlite3FixSelect( DbFixer *pFix, /* Context of the fixation */ Select *pSelect /* The SELECT statement to be fixed to one database */ ){ - while( pSelect ){ - if( sqlite3FixExprList(pFix, pSelect->pEList) ){ - return 1; - } - if( sqlite3FixSrcList(pFix, pSelect->pSrc) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pSelect->pWhere) ){ - return 1; - } - if( sqlite3FixExprList(pFix, pSelect->pGroupBy) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pSelect->pHaving) ){ - return 1; - } - if( sqlite3FixExprList(pFix, pSelect->pOrderBy) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pSelect->pLimit) ){ - return 1; - } - if( pSelect->pWith ){ - int i; - for(i=0; ipWith->nCte; i++){ - if( sqlite3FixSelect(pFix, pSelect->pWith->a[i].pSelect) ){ - return 1; - } - } - } - pSelect = pSelect->pPrior; - } - return 0; + return sqlite3WalkSelect(&pFix->w, pSelect); } SQLITE_PRIVATE int sqlite3FixExpr( DbFixer *pFix, /* Context of the fixation */ Expr *pExpr /* The expression to be fixed to one database */ ){ - while( pExpr ){ - if( pExpr->op==TK_VARIABLE ){ - if( pFix->pParse->db->init.busy ){ - pExpr->op = TK_NULL; - }else{ - sqlite3ErrorMsg(pFix->pParse, "%s cannot use variables", pFix->zType); - return 1; - } - } - if( ExprHasProperty(pExpr, EP_TokenOnly|EP_Leaf) ) break; - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - if( sqlite3FixSelect(pFix, pExpr->x.pSelect) ) return 1; - }else{ - if( sqlite3FixExprList(pFix, pExpr->x.pList) ) return 1; - } - if( sqlite3FixExpr(pFix, pExpr->pRight) ){ - return 1; - } - pExpr = pExpr->pLeft; - } - return 0; -} -SQLITE_PRIVATE int sqlite3FixExprList( - DbFixer *pFix, /* Context of the fixation */ - ExprList *pList /* The expression to be fixed to one database */ -){ - int i; - struct ExprList_item *pItem; - if( pList==0 ) return 0; - for(i=0, pItem=pList->a; inExpr; i++, pItem++){ - if( sqlite3FixExpr(pFix, pItem->pExpr) ){ - return 1; - } - } - return 0; + return sqlite3WalkExpr(&pFix->w, pExpr); } #endif @@ -103616,29 +119071,30 @@ SQLITE_PRIVATE int sqlite3FixTriggerStep( TriggerStep *pStep /* The trigger step be fixed to one database */ ){ while( pStep ){ - if( sqlite3FixSelect(pFix, pStep->pSelect) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pStep->pWhere) ){ - return 1; - } - if( sqlite3FixExprList(pFix, pStep->pExprList) ){ + if( sqlite3WalkSelect(&pFix->w, pStep->pSelect) + || sqlite3WalkExpr(&pFix->w, pStep->pWhere) + || sqlite3WalkExprList(&pFix->w, pStep->pExprList) + || sqlite3FixSrcList(pFix, pStep->pFrom) + ){ return 1; } #ifndef SQLITE_OMIT_UPSERT - if( pStep->pUpsert ){ - Upsert *pUp = pStep->pUpsert; - if( sqlite3FixExprList(pFix, pUp->pUpsertTarget) - || sqlite3FixExpr(pFix, pUp->pUpsertTargetWhere) - || sqlite3FixExprList(pFix, pUp->pUpsertSet) - || sqlite3FixExpr(pFix, pUp->pUpsertWhere) - ){ - return 1; + { + Upsert *pUp; + for(pUp=pStep->pUpsert; pUp; pUp=pUp->pNextUpsert){ + if( sqlite3WalkExprList(&pFix->w, pUp->pUpsertTarget) + || sqlite3WalkExpr(&pFix->w, pUp->pUpsertTargetWhere) + || sqlite3WalkExprList(&pFix->w, pUp->pUpsertSet) + || sqlite3WalkExpr(&pFix->w, pUp->pUpsertWhere) + ){ + return 1; + } } } #endif pStep = pStep->pNext; } + return 0; } #endif @@ -103725,7 +119181,7 @@ SQLITE_API int sqlite3_set_authorizer( sqlite3_mutex_enter(db->mutex); db->xAuth = (sqlite3_xauth)xAuth; db->pAuthArg = pArg; - sqlite3ExpirePreparedStatements(db); + if( db->xAuth ) sqlite3ExpirePreparedStatements(db, 1); sqlite3_mutex_leave(db->mutex); return SQLITE_OK; } @@ -103777,10 +119233,10 @@ SQLITE_PRIVATE int sqlite3AuthReadCol( /* ** The pExpr should be a TK_COLUMN expression. The table referred to -** is in pTabList or else it is the NEW or OLD table of a trigger. +** is in pTabList or else it is the NEW or OLD table of a trigger. ** Check to see if it is OK to read this particular column. ** -** If the auth function returns SQLITE_IGNORE, change the TK_COLUMN +** If the auth function returns SQLITE_IGNORE, change the TK_COLUMN ** instruction into a TK_NULL. If the auth function returns SQLITE_DENY, ** then generate an error. */ @@ -103790,7 +119246,6 @@ SQLITE_PRIVATE void sqlite3AuthRead( Schema *pSchema, /* The schema of the expression */ SrcList *pTabList /* All table that pExpr might refer to */ ){ - sqlite3 *db = pParse->db; Table *pTab = 0; /* The table being read */ const char *zCol; /* Name of the column of the table */ int iSrc; /* Index in pTabList->a[] of table being read */ @@ -103798,7 +119253,8 @@ SQLITE_PRIVATE void sqlite3AuthRead( int iCol; /* Index of column in table */ assert( pExpr->op==TK_COLUMN || pExpr->op==TK_TRIGGER ); - if( db->xAuth==0 ) return; + assert( !IN_RENAME_OBJECT ); + assert( pParse->db->xAuth!=0 ); iDb = sqlite3SchemaToIndex(pParse->db, pSchema); if( iDb<0 ){ /* An attempt to read a column out of a subquery or other @@ -103810,7 +119266,7 @@ SQLITE_PRIVATE void sqlite3AuthRead( pTab = pParse->pTriggerTab; }else{ assert( pTabList ); - for(iSrc=0; ALWAYS(iSrcnSrc); iSrc++){ + for(iSrc=0; iSrcnSrc; iSrc++){ if( pExpr->iTable==pTabList->a[iSrc].iCursor ){ pTab = pTabList->a[iSrc].pTab; break; @@ -103818,18 +119274,18 @@ SQLITE_PRIVATE void sqlite3AuthRead( } } iCol = pExpr->iColumn; - if( NEVER(pTab==0) ) return; + if( pTab==0 ) return; if( iCol>=0 ){ assert( iColnCol ); - zCol = pTab->aCol[iCol].zName; + zCol = pTab->aCol[iCol].zCnName; }else if( pTab->iPKey>=0 ){ assert( pTab->iPKeynCol ); - zCol = pTab->aCol[pTab->iPKey].zName; + zCol = pTab->aCol[pTab->iPKey].zCnName; }else{ zCol = "ROWID"; } - assert( iDb>=0 && iDbnDb ); + assert( iDb>=0 && iDbdb->nDb ); if( SQLITE_IGNORE==sqlite3AuthReadCol(pParse, pTab->zName, zCol, iDb) ){ pExpr->op = TK_NULL; } @@ -103851,14 +119307,11 @@ SQLITE_PRIVATE int sqlite3AuthCheck( sqlite3 *db = pParse->db; int rc; - /* Don't do any authorization checks if the database is initialising + /* Don't do any authorization checks if the database is initializing ** or if the parser is being invoked from within sqlite3_declare_vtab. */ - if( db->init.busy || IN_DECLARE_VTAB ){ - return SQLITE_OK; - } - - if( db->xAuth==0 ){ + assert( !IN_RENAME_OBJECT || db->xAuth==0 ); + if( db->xAuth==0 || db->init.busy || IN_SPECIAL_PARSE ){ return SQLITE_OK; } @@ -103895,7 +119348,7 @@ SQLITE_PRIVATE int sqlite3AuthCheck( */ SQLITE_PRIVATE void sqlite3AuthContextPush( Parse *pParse, - AuthContext *pContext, + AuthContext *pContext, const char *zContext ){ assert( pParse ); @@ -103952,13 +119405,13 @@ SQLITE_PRIVATE void sqlite3AuthContextPop(AuthContext *pContext){ */ struct TableLock { int iDb; /* The database containing the table to be locked */ - int iTab; /* The root page of the table to be locked */ + Pgno iTab; /* The root page of the table to be locked */ u8 isWriteLock; /* True for write lock. False for a read lock */ const char *zLockName; /* Name of the table */ }; /* -** Record the fact that we want to lock a table at run-time. +** Record the fact that we want to lock a table at run-time. ** ** The table to be locked has root page iTab and is found in database iDb. ** A read or a write lock can be taken depending on isWritelock. @@ -103967,21 +119420,20 @@ struct TableLock { ** code to make the lock occur is generated by a later call to ** codeTableLocks() which occurs during sqlite3FinishCoding(). */ -SQLITE_PRIVATE void sqlite3TableLock( +static SQLITE_NOINLINE void lockTable( Parse *pParse, /* Parsing context */ int iDb, /* Index of the database containing the table to lock */ - int iTab, /* Root page number of the table to be locked */ + Pgno iTab, /* Root page number of the table to be locked */ u8 isWriteLock, /* True for a write lock */ const char *zName /* Name of the table to be locked */ ){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); + Parse *pToplevel; int i; int nBytes; TableLock *p; assert( iDb>=0 ); - if( iDb==1 ) return; - if( !sqlite3BtreeSharable(pParse->db->aDb[iDb].pBt) ) return; + pToplevel = sqlite3ParseToplevel(pParse); for(i=0; inTableLock; i++){ p = &pToplevel->aTableLock[i]; if( p->iDb==iDb && p->iTab==iTab ){ @@ -104004,6 +119456,17 @@ SQLITE_PRIVATE void sqlite3TableLock( sqlite3OomFault(pToplevel->db); } } +SQLITE_PRIVATE void sqlite3TableLock( + Parse *pParse, /* Parsing context */ + int iDb, /* Index of the database containing the table to lock */ + Pgno iTab, /* Root page number of the table to be locked */ + u8 isWriteLock, /* True for a write lock */ + const char *zName /* Name of the table to be locked */ +){ + if( iDb==1 ) return; + if( !sqlite3BtreeSharable(pParse->db->aDb[iDb].pBt) ) return; + lockTable(pParse, iDb, iTab, isWriteLock, zName); +} /* ** Code an OP_TableLock instruction for each table locked by the @@ -104011,10 +119474,8 @@ SQLITE_PRIVATE void sqlite3TableLock( */ static void codeTableLocks(Parse *pParse){ int i; - Vdbe *pVdbe; - - pVdbe = sqlite3GetVdbe(pParse); - assert( pVdbe!=0 ); /* sqlite3GetVdbe cannot fail: VDBE already allocated */ + Vdbe *pVdbe = pParse->pVdbe; + assert( pVdbe!=0 ); for(i=0; inTableLock; i++){ TableLock *p = &pParse->aTableLock[i]; @@ -104053,22 +119514,53 @@ SQLITE_PRIVATE int sqlite3DbMaskAllZero(yDbMask m){ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){ sqlite3 *db; Vdbe *v; + int iDb, i; assert( pParse->pToplevel==0 ); db = pParse->db; + assert( db->pParse==pParse ); if( pParse->nested ) return; - if( db->mallocFailed || pParse->nErr ){ - if( pParse->rc==SQLITE_OK ) pParse->rc = SQLITE_ERROR; + if( pParse->nErr ){ + if( db->mallocFailed ) pParse->rc = SQLITE_NOMEM; return; } + assert( db->mallocFailed==0 ); /* Begin by generating some termination code at the end of the ** vdbe program */ - v = sqlite3GetVdbe(pParse); - assert( !pParse->isMultiWrite + v = pParse->pVdbe; + if( v==0 ){ + if( db->init.busy ){ + pParse->rc = SQLITE_DONE; + return; + } + v = sqlite3GetVdbe(pParse); + if( v==0 ) pParse->rc = SQLITE_ERROR; + } + assert( !pParse->isMultiWrite || sqlite3VdbeAssertMayAbort(v, pParse->mayAbort)); if( v ){ + if( pParse->bReturning ){ + Returning *pReturning = pParse->u1.pReturning; + int addrRewind; + int reg; + + if( pReturning->nRetCol ){ + sqlite3VdbeAddOp0(v, OP_FkCheck); + addrRewind = + sqlite3VdbeAddOp1(v, OP_Rewind, pReturning->iRetCur); + VdbeCoverage(v); + reg = pReturning->iRetReg; + for(i=0; inRetCol; i++){ + sqlite3VdbeAddOp3(v, OP_Column, pReturning->iRetCur, i, reg+i); + } + sqlite3VdbeAddOp2(v, OP_ResultRow, reg, i); + sqlite3VdbeAddOp2(v, OP_Next, pReturning->iRetCur, addrRewind+1); + VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addrRewind); + } + } sqlite3VdbeAddOp0(v, OP_Halt); #if SQLITE_USER_AUTHENTICATION @@ -104088,68 +119580,81 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){ ** transaction on each used database and to verify the schema cookie ** on each used database. */ - if( db->mallocFailed==0 - && (DbMaskNonZero(pParse->cookieMask) || pParse->pConstExpr) - ){ - int iDb, i; - assert( sqlite3VdbeGetOp(v, 0)->opcode==OP_Init ); - sqlite3VdbeJumpHere(v, 0); - for(iDb=0; iDbnDb; iDb++){ - Schema *pSchema; - if( DbMaskTest(pParse->cookieMask, iDb)==0 ) continue; - sqlite3VdbeUsesBtree(v, iDb); - pSchema = db->aDb[iDb].pSchema; - sqlite3VdbeAddOp4Int(v, - OP_Transaction, /* Opcode */ - iDb, /* P1 */ - DbMaskTest(pParse->writeMask,iDb), /* P2 */ - pSchema->schema_cookie, /* P3 */ - pSchema->iGeneration /* P4 */ - ); - if( db->init.busy==0 ) sqlite3VdbeChangeP5(v, 1); - VdbeComment((v, - "usesStmtJournal=%d", pParse->mayAbort && pParse->isMultiWrite)); - } + assert( pParse->nErr>0 || sqlite3VdbeGetOp(v, 0)->opcode==OP_Init ); + sqlite3VdbeJumpHere(v, 0); + assert( db->nDb>0 ); + iDb = 0; + do{ + Schema *pSchema; + if( DbMaskTest(pParse->cookieMask, iDb)==0 ) continue; + sqlite3VdbeUsesBtree(v, iDb); + pSchema = db->aDb[iDb].pSchema; + sqlite3VdbeAddOp4Int(v, + OP_Transaction, /* Opcode */ + iDb, /* P1 */ + DbMaskTest(pParse->writeMask,iDb), /* P2 */ + pSchema->schema_cookie, /* P3 */ + pSchema->iGeneration /* P4 */ + ); + if( db->init.busy==0 ) sqlite3VdbeChangeP5(v, 1); + VdbeComment((v, + "usesStmtJournal=%d", pParse->mayAbort && pParse->isMultiWrite)); + }while( ++iDbnDb ); #ifndef SQLITE_OMIT_VIRTUALTABLE - for(i=0; inVtabLock; i++){ - char *vtab = (char *)sqlite3GetVTable(db, pParse->apVtabLock[i]); - sqlite3VdbeAddOp4(v, OP_VBegin, 0, 0, 0, vtab, P4_VTAB); - } - pParse->nVtabLock = 0; + for(i=0; inVtabLock; i++){ + char *vtab = (char *)sqlite3GetVTable(db, pParse->apVtabLock[i]); + sqlite3VdbeAddOp4(v, OP_VBegin, 0, 0, 0, vtab, P4_VTAB); + } + pParse->nVtabLock = 0; #endif - /* Once all the cookies have been verified and transactions opened, - ** obtain the required table-locks. This is a no-op unless the - ** shared-cache feature is enabled. - */ - codeTableLocks(pParse); +#ifndef SQLITE_OMIT_SHARED_CACHE + /* Once all the cookies have been verified and transactions opened, + ** obtain the required table-locks. This is a no-op unless the + ** shared-cache feature is enabled. + */ + if( pParse->nTableLock ) codeTableLocks(pParse); +#endif - /* Initialize any AUTOINCREMENT data structures required. - */ - sqlite3AutoincrementBegin(pParse); + /* Initialize any AUTOINCREMENT data structures required. + */ + if( pParse->pAinc ) sqlite3AutoincrementBegin(pParse); - /* Code constant expressions that where factored out of inner loops */ - if( pParse->pConstExpr ){ - ExprList *pEL = pParse->pConstExpr; - pParse->okConstFactor = 0; - for(i=0; inExpr; i++){ - sqlite3ExprCode(pParse, pEL->a[i].pExpr, pEL->a[i].u.iConstExprReg); - } + /* Code constant expressions that where factored out of inner loops. + ** + ** The pConstExpr list might also contain expressions that we simply + ** want to keep around until the Parse object is deleted. Such + ** expressions have iConstExprReg==0. Do not generate code for + ** those expressions, of course. + */ + if( pParse->pConstExpr ){ + ExprList *pEL = pParse->pConstExpr; + pParse->okConstFactor = 0; + for(i=0; inExpr; i++){ + int iReg = pEL->a[i].u.iConstExprReg; + sqlite3ExprCode(pParse, pEL->a[i].pExpr, iReg); } - - /* Finally, jump back to the beginning of the executable code. */ - sqlite3VdbeGoto(v, 1); } - } + if( pParse->bReturning ){ + Returning *pRet = pParse->u1.pReturning; + if( pRet->nRetCol ){ + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pRet->iRetCur, pRet->nRetCol); + } + } + + /* Finally, jump back to the beginning of the executable code. */ + sqlite3VdbeGoto(v, 1); + } /* Get the VDBE program ready for execution */ - if( v && pParse->nErr==0 && !db->mallocFailed ){ - assert( pParse->iCacheLevel==0 ); /* Disables and re-enables match */ + assert( v!=0 || pParse->nErr ); + assert( db->mallocFailed==0 || pParse->nErr ); + if( pParse->nErr==0 ){ /* A minimum of one cursor is required if autoincrement is used * See ticket [a696379c1f08866] */ - if( pParse->pAinc!=0 && pParse->nTab==0 ) pParse->nTab = 1; + assert( pParse->pAinc==0 || pParse->nTab>0 ); sqlite3VdbeMakeReady(v, pParse); pParse->rc = SQLITE_DONE; }else{ @@ -104160,35 +119665,43 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){ /* ** Run the parser and code generator recursively in order to generate ** code for the SQL statement given onto the end of the pParse context -** currently under construction. When the parser is run recursively -** this way, the final OP_Halt is not appended and other initialization -** and finalization steps are omitted because those are handling by the -** outermost parser. +** currently under construction. Notes: ** -** Not everything is nestable. This facility is designed to permit -** INSERT, UPDATE, and DELETE operations against SQLITE_MASTER. Use -** care if you decide to try to use this routine for some other purposes. +** * The final OP_Halt is not appended and other initialization +** and finalization steps are omitted because those are handling by the +** outermost parser. +** +** * Built-in SQL functions always take precedence over application-defined +** SQL functions. In other words, it is not possible to override a +** built-in function. */ SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ va_list ap; char *zSql; - char *zErrMsg = 0; sqlite3 *db = pParse->db; + u32 savedDbFlags = db->mDbFlags; char saveBuf[PARSE_TAIL_SZ]; if( pParse->nErr ) return; + if( pParse->eParseMode ) return; assert( pParse->nested<10 ); /* Nesting should only be of limited depth */ va_start(ap, zFormat); zSql = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); if( zSql==0 ){ - return; /* A malloc must have failed */ + /* This can result either from an OOM or because the formatted string + ** exceeds SQLITE_LIMIT_LENGTH. In the latter case, we need to set + ** an error */ + if( !db->mallocFailed ) pParse->rc = SQLITE_TOOBIG; + pParse->nErr++; + return; } pParse->nested++; memcpy(saveBuf, PARSE_TAIL(pParse), PARSE_TAIL_SZ); memset(PARSE_TAIL(pParse), 0, PARSE_TAIL_SZ); - sqlite3RunParser(pParse, zSql, &zErrMsg); - sqlite3DbFree(db, zErrMsg); + db->mDbFlags |= DBFLAG_PreferBuiltin; + sqlite3RunParser(pParse, zSql); + db->mDbFlags = savedDbFlags; sqlite3DbFree(db, zSql); memcpy(PARSE_TAIL(pParse), saveBuf, PARSE_TAIL_SZ); pParse->nested--; @@ -104229,22 +119742,59 @@ SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3 *db, const char *zName, const cha return 0; } #endif - while(1){ - for(i=OMIT_TEMPDB; inDb; i++){ - int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - if( zDatabase==0 || sqlite3StrICmp(zDatabase, db->aDb[j].zDbSName)==0 ){ - assert( sqlite3SchemaMutexHeld(db, j, 0) ); - p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName); - if( p ) return p; + if( zDatabase ){ + for(i=0; inDb; i++){ + if( sqlite3StrICmp(zDatabase, db->aDb[i].zDbSName)==0 ) break; + } + if( i>=db->nDb ){ + /* No match against the official names. But always match "main" + ** to schema 0 as a legacy fallback. */ + if( sqlite3StrICmp(zDatabase,"main")==0 ){ + i = 0; + }else{ + return 0; + } + } + p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash, zName); + if( p==0 && sqlite3StrNICmp(zName, "sqlite_", 7)==0 ){ + if( i==1 ){ + if( sqlite3StrICmp(zName+7, &PREFERRED_TEMP_SCHEMA_TABLE[7])==0 + || sqlite3StrICmp(zName+7, &PREFERRED_SCHEMA_TABLE[7])==0 + || sqlite3StrICmp(zName+7, &LEGACY_SCHEMA_TABLE[7])==0 + ){ + p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash, + LEGACY_TEMP_SCHEMA_TABLE); + } + }else{ + if( sqlite3StrICmp(zName+7, &PREFERRED_SCHEMA_TABLE[7])==0 ){ + p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash, + LEGACY_SCHEMA_TABLE); + } + } + } + }else{ + /* Match against TEMP first */ + p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash, zName); + if( p ) return p; + /* The main database is second */ + p = sqlite3HashFind(&db->aDb[0].pSchema->tblHash, zName); + if( p ) return p; + /* Attached databases are in order of attachment */ + for(i=2; inDb; i++){ + assert( sqlite3SchemaMutexHeld(db, i, 0) ); + p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash, zName); + if( p ) break; + } + if( p==0 && sqlite3StrNICmp(zName, "sqlite_", 7)==0 ){ + if( sqlite3StrICmp(zName+7, &PREFERRED_SCHEMA_TABLE[7])==0 ){ + p = sqlite3HashFind(&db->aDb[0].pSchema->tblHash, LEGACY_SCHEMA_TABLE); + }else if( sqlite3StrICmp(zName+7, &PREFERRED_TEMP_SCHEMA_TABLE[7])==0 ){ + p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash, + LEGACY_TEMP_SCHEMA_TABLE); } } - /* Not found. If the name we were looking for was temp.sqlite_master - ** then change the name to sqlite_temp_master and try again. */ - if( sqlite3StrICmp(zName, MASTER_NAME)!=0 ) break; - if( sqlite3_stricmp(zDatabase, db->aDb[1].zDbSName)!=0 ) break; - zName = TEMP_MASTER_NAME; } - return 0; + return p; } /* @@ -104268,7 +119818,7 @@ SQLITE_PRIVATE Table *sqlite3LocateTable( /* Read the database schema. If an error occurs, leave an error message ** and code in pParse and return NULL. */ - if( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 + if( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 && SQLITE_OK!=sqlite3ReadSchema(pParse) ){ return 0; @@ -104276,29 +119826,36 @@ SQLITE_PRIVATE Table *sqlite3LocateTable( p = sqlite3FindTable(db, zName, zDbase); if( p==0 ){ - const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table"; #ifndef SQLITE_OMIT_VIRTUALTABLE - if( sqlite3FindDbName(db, zDbase)<1 ){ - /* If zName is the not the name of a table in the schema created using - ** CREATE, then check to see if it is the name of an virtual table that - ** can be an eponymous virtual table. */ + /* If zName is the not the name of a table in the schema created using + ** CREATE, then check to see if it is the name of an virtual table that + ** can be an eponymous virtual table. */ + if( (pParse->prepFlags & SQLITE_PREPARE_NO_VTAB)==0 && db->init.busy==0 ){ Module *pMod = (Module*)sqlite3HashFind(&db->aModule, zName); if( pMod==0 && sqlite3_strnicmp(zName, "pragma_", 7)==0 ){ pMod = sqlite3PragmaVtabRegister(db, zName); } if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){ + testcase( pMod->pEpoTab==0 ); return pMod->pEpoTab; } } #endif - if( (flags & LOCATE_NOERR)==0 ){ - if( zDbase ){ - sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName); - }else{ - sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName); - } - pParse->checkSchema = 1; + if( flags & LOCATE_NOERR ) return 0; + pParse->checkSchema = 1; + }else if( IsVirtual(p) && (pParse->prepFlags & SQLITE_PREPARE_NO_VTAB)!=0 ){ + p = 0; + } + + if( p==0 ){ + const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table"; + if( zDbase ){ + sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName); + }else{ + sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName); } + }else{ + assert( HasRowid(p) || p->iPKey<0 ); } return p; @@ -104314,9 +119871,9 @@ SQLITE_PRIVATE Table *sqlite3LocateTable( ** sqlite3FixSrcList() for details. */ SQLITE_PRIVATE Table *sqlite3LocateTableItem( - Parse *pParse, + Parse *pParse, u32 flags, - struct SrcList_item *p + SrcItem *p ){ const char *zDb; assert( p->pSchema==0 || p->zDatabase==0 ); @@ -104330,7 +119887,23 @@ SQLITE_PRIVATE Table *sqlite3LocateTableItem( } /* -** Locate the in-memory structure that describes +** Return the preferred table name for system tables. Translate legacy +** names into the new preferred names, as appropriate. +*/ +SQLITE_PRIVATE const char *sqlite3PreferredTableName(const char *zName){ + if( sqlite3StrNICmp(zName, "sqlite_", 7)==0 ){ + if( sqlite3StrICmp(zName+7, &LEGACY_SCHEMA_TABLE[7])==0 ){ + return PREFERRED_SCHEMA_TABLE; + } + if( sqlite3StrICmp(zName+7, &LEGACY_TEMP_SCHEMA_TABLE[7])==0 ){ + return PREFERRED_TEMP_SCHEMA_TABLE; + } + } + return zName; +} + +/* +** Locate the in-memory structure that describes ** a particular index given the name of that index ** and the name of the database that contains the index. ** Return NULL if not found. @@ -104350,7 +119923,7 @@ SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3 *db, const char *zName, const cha int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ Schema *pSchema = db->aDb[j].pSchema; assert( pSchema ); - if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zDbSName) ) continue; + if( zDb && sqlite3DbIsNamed(db, j, zDb)==0 ) continue; assert( sqlite3SchemaMutexHeld(db, j, 0) ); p = sqlite3HashFind(&pSchema->idxHash, zName); if( p ) break; @@ -104361,7 +119934,7 @@ SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3 *db, const char *zName, const cha /* ** Reclaim the memory used by an index */ -static void freeIndex(sqlite3 *db, Index *p){ +SQLITE_PRIVATE void sqlite3FreeIndex(sqlite3 *db, Index *p){ #ifndef SQLITE_OMIT_ANALYZE sqlite3DeleteIndexSamples(db, p); #endif @@ -104369,7 +119942,7 @@ static void freeIndex(sqlite3 *db, Index *p){ sqlite3ExprListDelete(db, p->aColExpr); sqlite3DbFree(db, p->zColAff); if( p->isResized ) sqlite3DbFree(db, (void *)p->azColl); -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 sqlite3_free(p->aiRowEst); #endif sqlite3DbFree(db, p); @@ -104401,7 +119974,7 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3 *db, int iDb, const char p->pNext = pIndex->pNext; } } - freeIndex(db, pIndex); + sqlite3FreeIndex(db, pIndex); } db->mDbFlags |= DBFLAG_SchemaChange; } @@ -104468,17 +120041,22 @@ SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3 *db, int iDb){ SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3 *db){ int i; sqlite3BtreeEnterAll(db); - assert( db->nSchemaLock==0 ); for(i=0; inDb; i++){ Db *pDb = &db->aDb[i]; if( pDb->pSchema ){ - sqlite3SchemaClear(pDb->pSchema); + if( db->nSchemaLock==0 ){ + sqlite3SchemaClear(pDb->pSchema); + }else{ + DbSetProperty(db, i, DB_ResetWanted); + } } } db->mDbFlags &= ~(DBFLAG_SchemaChange|DBFLAG_SchemaKnownOk); sqlite3VtabUnlockList(db); sqlite3BtreeLeaveAll(db); - sqlite3CollapseDatabaseArray(db); + if( db->nSchemaLock==0 ){ + sqlite3CollapseDatabaseArray(db); + } } /* @@ -104488,6 +120066,84 @@ SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3 *db){ db->mDbFlags &= ~DBFLAG_SchemaChange; } +/* +** Set the expression associated with a column. This is usually +** the DEFAULT value, but might also be the expression that computes +** the value for a generated column. +*/ +SQLITE_PRIVATE void sqlite3ColumnSetExpr( + Parse *pParse, /* Parsing context */ + Table *pTab, /* The table containing the column */ + Column *pCol, /* The column to receive the new DEFAULT expression */ + Expr *pExpr /* The new default expression */ +){ + ExprList *pList; + assert( IsOrdinaryTable(pTab) ); + pList = pTab->u.tab.pDfltList; + if( pCol->iDflt==0 + || NEVER(pList==0) + || NEVER(pList->nExpriDflt) + ){ + pCol->iDflt = pList==0 ? 1 : pList->nExpr+1; + pTab->u.tab.pDfltList = sqlite3ExprListAppend(pParse, pList, pExpr); + }else{ + sqlite3ExprDelete(pParse->db, pList->a[pCol->iDflt-1].pExpr); + pList->a[pCol->iDflt-1].pExpr = pExpr; + } +} + +/* +** Return the expression associated with a column. The expression might be +** the DEFAULT clause or the AS clause of a generated column. +** Return NULL if the column has no associated expression. +*/ +SQLITE_PRIVATE Expr *sqlite3ColumnExpr(Table *pTab, Column *pCol){ + if( pCol->iDflt==0 ) return 0; + if( NEVER(!IsOrdinaryTable(pTab)) ) return 0; + if( NEVER(pTab->u.tab.pDfltList==0) ) return 0; + if( NEVER(pTab->u.tab.pDfltList->nExpriDflt) ) return 0; + return pTab->u.tab.pDfltList->a[pCol->iDflt-1].pExpr; +} + +/* +** Set the collating sequence name for a column. +*/ +SQLITE_PRIVATE void sqlite3ColumnSetColl( + sqlite3 *db, + Column *pCol, + const char *zColl +){ + i64 nColl; + i64 n; + char *zNew; + assert( zColl!=0 ); + n = sqlite3Strlen30(pCol->zCnName) + 1; + if( pCol->colFlags & COLFLAG_HASTYPE ){ + n += sqlite3Strlen30(pCol->zCnName+n) + 1; + } + nColl = sqlite3Strlen30(zColl) + 1; + zNew = sqlite3DbRealloc(db, pCol->zCnName, nColl+n); + if( zNew ){ + pCol->zCnName = zNew; + memcpy(pCol->zCnName + n, zColl, nColl); + pCol->colFlags |= COLFLAG_HASCOLL; + } +} + +/* +** Return the collating sequence name for a column +*/ +SQLITE_PRIVATE const char *sqlite3ColumnColl(Column *pCol){ + const char *z; + if( (pCol->colFlags & COLFLAG_HASCOLL)==0 ) return 0; + z = pCol->zCnName; + while( *z ){ z++; } + if( pCol->colFlags & COLFLAG_HASTYPE ){ + do{ z++; }while( *z ); + } + return z+1; +} + /* ** Delete memory allocated for the column names of a table or view (the ** Table.aCol[] array). @@ -104496,13 +120152,23 @@ SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3 *db, Table *pTable){ int i; Column *pCol; assert( pTable!=0 ); + assert( db!=0 ); if( (pCol = pTable->aCol)!=0 ){ for(i=0; inCol; i++, pCol++){ - sqlite3DbFree(db, pCol->zName); - sqlite3ExprDelete(db, pCol->pDflt); - sqlite3DbFree(db, pCol->zColl); + assert( pCol->zCnName==0 || pCol->hName==sqlite3StrIHash(pCol->zCnName) ); + sqlite3DbFree(db, pCol->zCnName); + } + sqlite3DbNNFreeNN(db, pTable->aCol); + if( IsOrdinaryTable(pTable) ){ + sqlite3ExprListDelete(db, pTable->u.tab.pDfltList); + } + if( db->pnBytesFreed==0 ){ + pTable->aCol = 0; + pTable->nCol = 0; + if( IsOrdinaryTable(pTable) ){ + pTable->u.tab.pDfltList = 0; + } } - sqlite3DbFree(db, pTable->aCol); } } @@ -104512,10 +120178,10 @@ SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3 *db, Table *pTable){ ** ** This routine just deletes the data structure. It does not unlink ** the table data structure from the hash table. But it does destroy -** memory structures of the indices and foreign keys associated with +** memory structures of the indices and foreign keys associated with ** the table. ** -** The db parameter is optional. It is needed if the Table object +** The db parameter is optional. It is needed if the Table object ** contains lookaside memory. (Table objects in the schema do not use ** lookaside memory, but some ephemeral Table objects do.) Or the ** db parameter can be used with db->pnBytesFreed to measure the memory @@ -104526,10 +120192,15 @@ static void SQLITE_NOINLINE deleteTable(sqlite3 *db, Table *pTable){ #ifdef SQLITE_DEBUG /* Record the number of outstanding lookaside allocations in schema Tables - ** prior to doing any free() operations. Since schema Tables do not use - ** lookaside, this number should not change. */ + ** prior to doing any free() operations. Since schema Tables do not use + ** lookaside, this number should not change. + ** + ** If malloc has already failed, it may be that it failed while allocating + ** a Table object that was going to be marked ephemeral. So do not check + ** that no lookaside memory is used in this case either. */ int nLookaside = 0; - if( db && (pTable->tabFlags & TF_Ephemeral)==0 ){ + assert( db!=0 ); + if( !db->mallocFailed && (pTable->tabFlags & TF_Ephemeral)==0 ){ nLookaside = sqlite3LookasideUsed(db, 0); } #endif @@ -104539,30 +120210,36 @@ static void SQLITE_NOINLINE deleteTable(sqlite3 *db, Table *pTable){ pNext = pIndex->pNext; assert( pIndex->pSchema==pTable->pSchema || (IsVirtual(pTable) && pIndex->idxType!=SQLITE_IDXTYPE_APPDEF) ); - if( (db==0 || db->pnBytesFreed==0) && !IsVirtual(pTable) ){ - char *zName = pIndex->zName; + if( db->pnBytesFreed==0 && !IsVirtual(pTable) ){ + char *zName = pIndex->zName; TESTONLY ( Index *pOld = ) sqlite3HashInsert( &pIndex->pSchema->idxHash, zName, 0 ); assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); assert( pOld==pIndex || pOld==0 ); } - freeIndex(db, pIndex); + sqlite3FreeIndex(db, pIndex); } - /* Delete any foreign keys attached to this table. */ - sqlite3FkDelete(db, pTable); + if( IsOrdinaryTable(pTable) ){ + sqlite3FkDelete(db, pTable); + } +#ifndef SQLITE_OMIT_VIRTUALTABLE + else if( IsVirtual(pTable) ){ + sqlite3VtabClear(db, pTable); + } +#endif + else{ + assert( IsView(pTable) ); + sqlite3SelectDelete(db, pTable->u.view.pSelect); + } /* Delete the Table structure itself. */ sqlite3DeleteColumnNames(db, pTable); sqlite3DbFree(db, pTable->zName); sqlite3DbFree(db, pTable->zColAff); - sqlite3SelectDelete(db, pTable->pSelect); sqlite3ExprListDelete(db, pTable->pCheck); -#ifndef SQLITE_OMIT_VIRTUALTABLE - sqlite3VtabClear(db, pTable); -#endif sqlite3DbFree(db, pTable); /* Verify that no lookaside memory was used by schema tables */ @@ -104570,8 +120247,9 @@ static void SQLITE_NOINLINE deleteTable(sqlite3 *db, Table *pTable){ } SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ /* Do not delete the table until the reference count reaches zero. */ + assert( db!=0 ); if( !pTable ) return; - if( ((!db || db->pnBytesFreed==0) && (--pTable->nTabRef)>0) ) return; + if( db->pnBytesFreed==0 && (--pTable->nTabRef)>0 ) return; deleteTable(db, pTable); } @@ -104608,10 +120286,10 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char ** are not \000 terminated and are not persistent. The returned string ** is \000 terminated and is persistent. */ -SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3 *db, Token *pName){ +SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3 *db, const Token *pName){ char *zName; if( pName ){ - zName = sqlite3DbStrNDup(db, (char*)pName->z, pName->n); + zName = sqlite3DbStrNDup(db, (const char*)pName->z, pName->n); sqlite3Dequote(zName); }else{ zName = 0; @@ -104620,13 +120298,13 @@ SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3 *db, Token *pName){ } /* -** Open the sqlite_master table stored in database number iDb for +** Open the sqlite_schema table stored in database number iDb for ** writing. The table is opened using cursor 0. */ -SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *p, int iDb){ +SQLITE_PRIVATE void sqlite3OpenSchemaTable(Parse *p, int iDb){ Vdbe *v = sqlite3GetVdbe(p); - sqlite3TableLock(p, iDb, MASTER_ROOT, 1, MASTER_NAME); - sqlite3VdbeAddOp4Int(v, OP_OpenWrite, 0, MASTER_ROOT, iDb, 5); + sqlite3TableLock(p, iDb, SCHEMA_ROOT, 1, LEGACY_SCHEMA_TABLE); + sqlite3VdbeAddOp4Int(v, OP_OpenWrite, 0, SCHEMA_ROOT, iDb, 5); if( p->nTab==0 ){ p->nTab = 1; } @@ -104655,7 +120333,7 @@ SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *db, const char *zName){ /* ** The token *pName contains the name of a database (either "main" or ** "temp" or the name of an attached db). This routine returns the -** index of the named database in db->aDb[], or -1 if the named db +** index of the named database in db->aDb[], or -1 if the named db ** does not exist. */ SQLITE_PRIVATE int sqlite3FindDb(sqlite3 *db, Token *pName){ @@ -104671,7 +120349,7 @@ SQLITE_PRIVATE int sqlite3FindDb(sqlite3 *db, Token *pName){ ** pName1 and pName2. If the table name was fully qualified, for example: ** ** CREATE TABLE xxx.yyy (...); -** +** ** Then pName1 is set to "xxx" and pName2 "yyy". On the other hand if ** the table name is not fully qualified, i.e.: ** @@ -104705,7 +120383,7 @@ SQLITE_PRIVATE int sqlite3TwoPartName( return -1; } }else{ - assert( db->init.iDb==0 || db->init.busy + assert( db->init.iDb==0 || db->init.busy || IN_SPECIAL_PARSE || (db->mDbFlags & DBFLAG_Vacuum)!=0); iDb = db->init.iDb; *pUnqual = pName1; @@ -104713,19 +120391,62 @@ SQLITE_PRIVATE int sqlite3TwoPartName( return iDb; } +/* +** True if PRAGMA writable_schema is ON +*/ +SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3 *db){ + testcase( (db->flags&(SQLITE_WriteSchema|SQLITE_Defensive))==0 ); + testcase( (db->flags&(SQLITE_WriteSchema|SQLITE_Defensive))== + SQLITE_WriteSchema ); + testcase( (db->flags&(SQLITE_WriteSchema|SQLITE_Defensive))== + SQLITE_Defensive ); + testcase( (db->flags&(SQLITE_WriteSchema|SQLITE_Defensive))== + (SQLITE_WriteSchema|SQLITE_Defensive) ); + return (db->flags&(SQLITE_WriteSchema|SQLITE_Defensive))==SQLITE_WriteSchema; +} + /* ** This routine is used to check if the UTF-8 string zName is a legal ** unqualified name for a new schema object (table, index, view or ** trigger). All names are legal except those that begin with the string ** "sqlite_" (in upper, lower or mixed case). This portion of the namespace ** is reserved for internal use. +** +** When parsing the sqlite_schema table, this routine also checks to +** make sure the "type", "name", and "tbl_name" columns are consistent +** with the SQL. */ -SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *pParse, const char *zName){ - if( !pParse->db->init.busy && pParse->nested==0 - && (pParse->db->flags & SQLITE_WriteSchema)==0 - && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){ - sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s", zName); - return SQLITE_ERROR; +SQLITE_PRIVATE int sqlite3CheckObjectName( + Parse *pParse, /* Parsing context */ + const char *zName, /* Name of the object to check */ + const char *zType, /* Type of this object */ + const char *zTblName /* Parent table name for triggers and indexes */ +){ + sqlite3 *db = pParse->db; + if( sqlite3WritableSchema(db) + || db->init.imposterTable + || !sqlite3Config.bExtraSchemaChecks + ){ + /* Skip these error checks for writable_schema=ON */ + return SQLITE_OK; + } + if( db->init.busy ){ + if( sqlite3_stricmp(zType, db->init.azInit[0]) + || sqlite3_stricmp(zName, db->init.azInit[1]) + || sqlite3_stricmp(zTblName, db->init.azInit[2]) + ){ + sqlite3ErrorMsg(pParse, ""); /* corruptSchema() will supply the error */ + return SQLITE_ERROR; + } + }else{ + if( (pParse->nested==0 && 0==sqlite3StrNICmp(zName, "sqlite_", 7)) + || (sqlite3ReadOnlyShadowTables(db) && sqlite3ShadowTableName(db, zName)) + ){ + sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s", + zName); + return SQLITE_ERROR; + } + } return SQLITE_OK; } @@ -104740,10 +120461,12 @@ SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table *pTab){ } /* -** Return the column of index pIdx that corresponds to table -** column iCol. Return -1 if not found. +** Convert an table column number into a index column number. That is, +** for the column iCol in the table (as defined by the CREATE TABLE statement) +** find the (first) offset of that column in index pIdx. Or return -1 +** if column iCol is not used in index pIdx. */ -SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index *pIdx, i16 iCol){ +SQLITE_PRIVATE i16 sqlite3TableColumnToIndex(Index *pIdx, i16 iCol){ int i; for(i=0; inColumn; i++){ if( iCol==pIdx->aiColumn[i] ) return i; @@ -104751,6 +120474,101 @@ SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index *pIdx, i16 iCol){ return -1; } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +/* Convert a storage column number into a table column number. +** +** The storage column number (0,1,2,....) is the index of the value +** as it appears in the record on disk. The true column number +** is the index (0,1,2,...) of the column in the CREATE TABLE statement. +** +** The storage column number is less than the table column number if +** and only there are VIRTUAL columns to the left. +** +** If SQLITE_OMIT_GENERATED_COLUMNS, this routine is a no-op macro. +*/ +SQLITE_PRIVATE i16 sqlite3StorageColumnToTable(Table *pTab, i16 iCol){ + if( pTab->tabFlags & TF_HasVirtual ){ + int i; + for(i=0; i<=iCol; i++){ + if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) iCol++; + } + } + return iCol; +} +#endif + +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +/* Convert a table column number into a storage column number. +** +** The storage column number (0,1,2,....) is the index of the value +** as it appears in the record on disk. Or, if the input column is +** the N-th virtual column (zero-based) then the storage number is +** the number of non-virtual columns in the table plus N. +** +** The true column number is the index (0,1,2,...) of the column in +** the CREATE TABLE statement. +** +** If the input column is a VIRTUAL column, then it should not appear +** in storage. But the value sometimes is cached in registers that +** follow the range of registers used to construct storage. This +** avoids computing the same VIRTUAL column multiple times, and provides +** values for use by OP_Param opcodes in triggers. Hence, if the +** input column is a VIRTUAL table, put it after all the other columns. +** +** In the following, N means "normal column", S means STORED, and +** V means VIRTUAL. Suppose the CREATE TABLE has columns like this: +** +** CREATE TABLE ex(N,S,V,N,S,V,N,S,V); +** -- 0 1 2 3 4 5 6 7 8 +** +** Then the mapping from this function is as follows: +** +** INPUTS: 0 1 2 3 4 5 6 7 8 +** OUTPUTS: 0 1 6 2 3 7 4 5 8 +** +** So, in other words, this routine shifts all the virtual columns to +** the end. +** +** If SQLITE_OMIT_GENERATED_COLUMNS then there are no virtual columns and +** this routine is a no-op macro. If the pTab does not have any virtual +** columns, then this routine is no-op that always return iCol. If iCol +** is negative (indicating the ROWID column) then this routine return iCol. +*/ +SQLITE_PRIVATE i16 sqlite3TableColumnToStorage(Table *pTab, i16 iCol){ + int i; + i16 n; + assert( iColnCol ); + if( (pTab->tabFlags & TF_HasVirtual)==0 || iCol<0 ) return iCol; + for(i=0, n=0; iaCol[i].colFlags & COLFLAG_VIRTUAL)==0 ) n++; + } + if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ){ + /* iCol is a virtual column itself */ + return pTab->nNVCol + i - n; + }else{ + /* iCol is a normal or stored column */ + return n; + } +} +#endif + +/* +** Insert a single OP_JournalMode query opcode in order to force the +** prepared statement to return false for sqlite3_stmt_readonly(). This +** is used by CREATE TABLE IF NOT EXISTS and similar if the table already +** exists, so that the prepared statement for CREATE TABLE IF NOT EXISTS +** will return false for sqlite3_stmt_readonly() even if that statement +** is a read-only no-op. +*/ +static void sqlite3ForceNotReadOnly(Parse *pParse){ + int iReg = ++pParse->nMem; + Vdbe *v = sqlite3GetVdbe(pParse); + if( v ){ + sqlite3VdbeAddOp3(v, OP_JournalMode, 0, iReg, PAGER_JOURNALMODE_QUERY); + sqlite3VdbeUsesBtree(v, 0); + } +} + /* ** Begin constructing a new table representation in memory. This is ** the first of several action routines that get called in response @@ -104784,7 +120602,7 @@ SQLITE_PRIVATE void sqlite3StartTable( Token *pName; /* Unqualified name of the table to create */ if( db->init.busy && db->init.newTnum==1 ){ - /* Special case: Parsing the sqlite_master or sqlite_temp_master schema */ + /* Special case: Parsing the sqlite_schema or sqlite_temp_schema schema */ iDb = db->init.iDb; zName = sqlite3DbStrDup(db, SCHEMA_TABLE(iDb)); pName = pName1; @@ -104793,17 +120611,20 @@ SQLITE_PRIVATE void sqlite3StartTable( iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName); if( iDb<0 ) return; if( !OMIT_TEMPDB && isTemp && pName2->n>0 && iDb!=1 ){ - /* If creating a temp table, the name may not be qualified. Unless + /* If creating a temp table, the name may not be qualified. Unless ** the database name is "temp" anyway. */ sqlite3ErrorMsg(pParse, "temporary table name must be unqualified"); return; } if( !OMIT_TEMPDB && isTemp ) iDb = 1; zName = sqlite3NameFromToken(db, pName); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenMap(pParse, (void*)zName, pName); + } } pParse->sNameToken = *pName; if( zName==0 ) return; - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ + if( sqlite3CheckObjectName(pParse, zName, isView?"view":"table", zName) ){ goto begin_table_error; } if( db->init.iDb==1 ) isTemp = 1; @@ -104835,7 +120656,7 @@ SQLITE_PRIVATE void sqlite3StartTable( ** and types will be used, so there is no need to test for namespace ** collisions. */ - if( !IN_DECLARE_VTAB ){ + if( !IN_SPECIAL_PARSE ){ char *zDb = db->aDb[iDb].zDbSName; if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ goto begin_table_error; @@ -104843,10 +120664,12 @@ SQLITE_PRIVATE void sqlite3StartTable( pTable = sqlite3FindTable(db, zName, zDb); if( pTable ){ if( !noErr ){ - sqlite3ErrorMsg(pParse, "table %T already exists", pName); + sqlite3ErrorMsg(pParse, "%s %T already exists", + (IsView(pTable)? "view" : "table"), pName); }else{ assert( !db->init.busy || CORRUPT_DB ); sqlite3CodeVerifySchema(pParse, iDb); + sqlite3ForceNotReadOnly(pParse); } goto begin_table_error; } @@ -104875,22 +120698,11 @@ SQLITE_PRIVATE void sqlite3StartTable( assert( pParse->pNewTable==0 ); pParse->pNewTable = pTable; - /* If this is the magic sqlite_sequence table used by autoincrement, - ** then record a pointer to this table in the main database structure - ** so that INSERT can find the table easily. - */ -#ifndef SQLITE_OMIT_AUTOINCREMENT - if( !pParse->nested && strcmp(zName, "sqlite_sequence")==0 ){ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pTable->pSchema->pSeqTab = pTable; - } -#endif - /* Begin generating the code that will insert the table record into - ** the SQLITE_MASTER table. Note in particular that we must go ahead + ** the schema table. Note in particular that we must go ahead ** and allocate the record number for the table entry now. Before any ** PRIMARY KEY or UNIQUE keywords are parsed. Those keywords will cause - ** indices to be created and the table record must come before the + ** indices to be created and the table record must come before the ** indices. Hence, the record number for the table must be allocated ** now. */ @@ -104908,7 +120720,7 @@ SQLITE_PRIVATE void sqlite3StartTable( } #endif - /* If the file format and encoding in the database have not been set, + /* If the file format and encoding in the database have not been set, ** set them now. */ reg1 = pParse->regRowid = ++pParse->nMem; @@ -104923,7 +120735,7 @@ SQLITE_PRIVATE void sqlite3StartTable( sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_TEXT_ENCODING, ENC(db)); sqlite3VdbeJumpHere(v, addr1); - /* This just creates a place-holder record in the sqlite_master table. + /* This just creates a place-holder record in the sqlite_schema table. ** The record created does not contain anything yet. It will be replaced ** by the real entry in code generated at sqlite3EndTable(). ** @@ -104938,10 +120750,11 @@ SQLITE_PRIVATE void sqlite3StartTable( }else #endif { - pParse->addrCrTab = + assert( !pParse->bReturning ); + pParse->u1.addrCrTab = sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, reg2, BTREE_INTKEY); } - sqlite3OpenMasterTable(pParse, iDb); + sqlite3OpenSchemaTable(pParse, iDb); sqlite3VdbeAddOp2(v, OP_NewRowid, 0, reg1); sqlite3VdbeAddOp4(v, OP_Blob, 6, reg3, 0, nullRow, P4_STATIC); sqlite3VdbeAddOp3(v, OP_Insert, 0, reg3, reg1); @@ -104954,6 +120767,7 @@ SQLITE_PRIVATE void sqlite3StartTable( /* If an error occurs, we jump here */ begin_table_error: + pParse->checkSchema = 1; sqlite3DbFree(db, zName); return; } @@ -104963,14 +120777,89 @@ begin_table_error: */ #if SQLITE_ENABLE_HIDDEN_COLUMNS SQLITE_PRIVATE void sqlite3ColumnPropertiesFromName(Table *pTab, Column *pCol){ - if( sqlite3_strnicmp(pCol->zName, "__hidden__", 10)==0 ){ + if( sqlite3_strnicmp(pCol->zCnName, "__hidden__", 10)==0 ){ pCol->colFlags |= COLFLAG_HIDDEN; + if( pTab ) pTab->tabFlags |= TF_HasHidden; }else if( pTab && pCol!=pTab->aCol && (pCol[-1].colFlags & COLFLAG_HIDDEN) ){ pTab->tabFlags |= TF_OOOHidden; } } #endif +/* +** Name of the special TEMP trigger used to implement RETURNING. The +** name begins with "sqlite_" so that it is guaranteed not to collide +** with any application-generated triggers. +*/ +#define RETURNING_TRIGGER_NAME "sqlite_returning" + +/* +** Clean up the data structures associated with the RETURNING clause. +*/ +static void sqlite3DeleteReturning(sqlite3 *db, Returning *pRet){ + Hash *pHash; + pHash = &(db->aDb[1].pSchema->trigHash); + sqlite3HashInsert(pHash, RETURNING_TRIGGER_NAME, 0); + sqlite3ExprListDelete(db, pRet->pReturnEL); + sqlite3DbFree(db, pRet); +} + +/* +** Add the RETURNING clause to the parse currently underway. +** +** This routine creates a special TEMP trigger that will fire for each row +** of the DML statement. That TEMP trigger contains a single SELECT +** statement with a result set that is the argument of the RETURNING clause. +** The trigger has the Trigger.bReturning flag and an opcode of +** TK_RETURNING instead of TK_SELECT, so that the trigger code generator +** knows to handle it specially. The TEMP trigger is automatically +** removed at the end of the parse. +** +** When this routine is called, we do not yet know if the RETURNING clause +** is attached to a DELETE, INSERT, or UPDATE, so construct it as a +** RETURNING trigger instead. It will then be converted into the appropriate +** type on the first call to sqlite3TriggersExist(). +*/ +SQLITE_PRIVATE void sqlite3AddReturning(Parse *pParse, ExprList *pList){ + Returning *pRet; + Hash *pHash; + sqlite3 *db = pParse->db; + if( pParse->pNewTrigger ){ + sqlite3ErrorMsg(pParse, "cannot use RETURNING in a trigger"); + }else{ + assert( pParse->bReturning==0 || pParse->ifNotExists ); + } + pParse->bReturning = 1; + pRet = sqlite3DbMallocZero(db, sizeof(*pRet)); + if( pRet==0 ){ + sqlite3ExprListDelete(db, pList); + return; + } + pParse->u1.pReturning = pRet; + pRet->pParse = pParse; + pRet->pReturnEL = pList; + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3DeleteReturning, pRet); + testcase( pParse->earlyCleanup ); + if( db->mallocFailed ) return; + pRet->retTrig.zName = RETURNING_TRIGGER_NAME; + pRet->retTrig.op = TK_RETURNING; + pRet->retTrig.tr_tm = TRIGGER_AFTER; + pRet->retTrig.bReturning = 1; + pRet->retTrig.pSchema = db->aDb[1].pSchema; + pRet->retTrig.pTabSchema = db->aDb[1].pSchema; + pRet->retTrig.step_list = &pRet->retTStep; + pRet->retTStep.op = TK_RETURNING; + pRet->retTStep.pTrig = &pRet->retTrig; + pRet->retTStep.pExprList = pList; + pHash = &(db->aDb[1].pSchema->trigHash); + assert( sqlite3HashFind(pHash, RETURNING_TRIGGER_NAME)==0 + || pParse->nErr || pParse->ifNotExists ); + if( sqlite3HashInsert(pHash, RETURNING_TRIGGER_NAME, &pRet->retTrig) + ==&pRet->retTrig ){ + sqlite3OomFault(db); + } +} /* ** Add a new column to the table currently being constructed. @@ -104980,63 +120869,110 @@ SQLITE_PRIVATE void sqlite3ColumnPropertiesFromName(Table *pTab, Column *pCol){ ** first to get things going. Then this routine is called for each ** column. */ -SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName, Token *pType){ +SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token sName, Token sType){ Table *p; int i; char *z; char *zType; Column *pCol; sqlite3 *db = pParse->db; + u8 hName; + Column *aNew; + u8 eType = COLTYPE_CUSTOM; + u8 szEst = 1; + char affinity = SQLITE_AFF_BLOB; + if( (p = pParse->pNewTable)==0 ) return; if( p->nCol+1>db->aLimit[SQLITE_LIMIT_COLUMN] ){ sqlite3ErrorMsg(pParse, "too many columns on %s", p->zName); return; } - z = sqlite3DbMallocRaw(db, pName->n + pType->n + 2); + if( !IN_RENAME_OBJECT ) sqlite3DequoteToken(&sName); + + /* Because keywords GENERATE ALWAYS can be converted into identifiers + ** by the parser, we can sometimes end up with a typename that ends + ** with "generated always". Check for this case and omit the surplus + ** text. */ + if( sType.n>=16 + && sqlite3_strnicmp(sType.z+(sType.n-6),"always",6)==0 + ){ + sType.n -= 6; + while( ALWAYS(sType.n>0) && sqlite3Isspace(sType.z[sType.n-1]) ) sType.n--; + if( sType.n>=9 + && sqlite3_strnicmp(sType.z+(sType.n-9),"generated",9)==0 + ){ + sType.n -= 9; + while( sType.n>0 && sqlite3Isspace(sType.z[sType.n-1]) ) sType.n--; + } + } + + /* Check for standard typenames. For standard typenames we will + ** set the Column.eType field rather than storing the typename after + ** the column name, in order to save space. */ + if( sType.n>=3 ){ + sqlite3DequoteToken(&sType); + for(i=0; i0) ); if( z==0 ) return; - memcpy(z, pName->z, pName->n); - z[pName->n] = 0; + if( IN_RENAME_OBJECT ) sqlite3RenameTokenMap(pParse, (void*)z, &sName); + memcpy(z, sName.z, sName.n); + z[sName.n] = 0; sqlite3Dequote(z); + hName = sqlite3StrIHash(z); for(i=0; inCol; i++){ - if( sqlite3_stricmp(z, p->aCol[i].zName)==0 ){ + if( p->aCol[i].hName==hName && sqlite3StrICmp(z, p->aCol[i].zCnName)==0 ){ sqlite3ErrorMsg(pParse, "duplicate column name: %s", z); sqlite3DbFree(db, z); return; } } - if( (p->nCol & 0x7)==0 ){ - Column *aNew; - aNew = sqlite3DbRealloc(db,p->aCol,(p->nCol+8)*sizeof(p->aCol[0])); - if( aNew==0 ){ - sqlite3DbFree(db, z); - return; - } - p->aCol = aNew; + aNew = sqlite3DbRealloc(db,p->aCol,((i64)p->nCol+1)*sizeof(p->aCol[0])); + if( aNew==0 ){ + sqlite3DbFree(db, z); + return; } + p->aCol = aNew; pCol = &p->aCol[p->nCol]; memset(pCol, 0, sizeof(p->aCol[0])); - pCol->zName = z; + pCol->zCnName = z; + pCol->hName = hName; sqlite3ColumnPropertiesFromName(p, pCol); - - if( pType->n==0 ){ + + if( sType.n==0 ){ /* If there is no type specified, columns have the default affinity ** 'BLOB' with a default size of 4 bytes. */ - pCol->affinity = SQLITE_AFF_BLOB; - pCol->szEst = 1; + pCol->affinity = affinity; + pCol->eCType = eType; + pCol->szEst = szEst; #ifdef SQLITE_ENABLE_SORTER_REFERENCES - if( 4>=sqlite3GlobalConfig.szSorterRef ){ - pCol->colFlags |= COLFLAG_SORTERREF; + if( affinity==SQLITE_AFF_BLOB ){ + if( 4>=sqlite3GlobalConfig.szSorterRef ){ + pCol->colFlags |= COLFLAG_SORTERREF; + } } #endif }else{ zType = z + sqlite3Strlen30(z) + 1; - memcpy(zType, pType->z, pType->n); - zType[pType->n] = 0; + memcpy(zType, sType.z, sType.n); + zType[sType.n] = 0; sqlite3Dequote(zType); pCol->affinity = sqlite3AffinityType(zType, pCol); pCol->colFlags |= COLFLAG_HASTYPE; } p->nCol++; + p->nNVCol++; pParse->constraintName.n = 0; } @@ -105072,11 +121008,11 @@ SQLITE_PRIVATE void sqlite3AddNotNull(Parse *pParse, int onError){ ** Scan the column type name zType (length nType) and return the ** associated affinity type. ** -** This routine does a case-independent search of zType for the +** This routine does a case-independent search of zType for the ** substrings in the following table. If one of the substrings is ** found, the corresponding affinity is returned. If zType contains -** more than one of the substrings, entries toward the top of -** the table take priority. For example, if zType is 'BLOBINT', +** more than one of the substrings, entries toward the top of +** the table take priority. For example, if zType is 'BLOBINT', ** SQLITE_AFF_INTEGER is returned. ** ** Substring | Affinity @@ -105174,38 +121110,48 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue( Parse *pParse, /* Parsing context */ Expr *pExpr, /* The parsed expression of the default value */ const char *zStart, /* Start of the default value text */ - const char *zEnd /* First character past end of defaut value text */ + const char *zEnd /* First character past end of default value text */ ){ Table *p; Column *pCol; sqlite3 *db = pParse->db; p = pParse->pNewTable; if( p!=0 ){ + int isInit = db->init.busy && db->init.iDb!=1; pCol = &(p->aCol[p->nCol-1]); - if( !sqlite3ExprIsConstantOrFunction(pExpr, db->init.busy) ){ + if( !sqlite3ExprIsConstantOrFunction(pExpr, isInit) ){ sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant", - pCol->zName); + pCol->zCnName); +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + }else if( pCol->colFlags & COLFLAG_GENERATED ){ + testcase( pCol->colFlags & COLFLAG_VIRTUAL ); + testcase( pCol->colFlags & COLFLAG_STORED ); + sqlite3ErrorMsg(pParse, "cannot use DEFAULT on a generated column"); +#endif }else{ /* A copy of pExpr is used instead of the original, as pExpr contains ** tokens that point to volatile memory. */ - Expr x; - sqlite3ExprDelete(db, pCol->pDflt); + Expr x, *pDfltExpr; memset(&x, 0, sizeof(x)); x.op = TK_SPAN; x.u.zToken = sqlite3DbSpanDup(db, zStart, zEnd); x.pLeft = pExpr; x.flags = EP_Skip; - pCol->pDflt = sqlite3ExprDup(db, &x, EXPRDUP_REDUCE); + pDfltExpr = sqlite3ExprDup(db, &x, EXPRDUP_REDUCE); sqlite3DbFree(db, x.u.zToken); + sqlite3ColumnSetExpr(pParse, p, pCol, pDfltExpr); } } + if( IN_RENAME_OBJECT ){ + sqlite3RenameExprUnmap(pParse, pExpr); + } sqlite3ExprDelete(db, pExpr); } /* ** Backwards Compatibility Hack: -** +** ** Historical versions of SQLite accepted strings as column names in ** indexes and PRIMARY KEY constraints and in UNIQUE constraints. Example: ** @@ -105216,7 +121162,7 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue( ** accept it. This routine does the necessary conversion. It converts ** the expression given in its argument from a TK_STRING into a TK_ID ** if the expression is just a TK_STRING with an optional COLLATE clause. -** If the epxression is anything other than TK_STRING, the expression is +** If the expression is anything other than TK_STRING, the expression is ** unchanged. */ static void sqlite3StringToId(Expr *p){ @@ -105228,7 +121174,22 @@ static void sqlite3StringToId(Expr *p){ } /* -** Designate the PRIMARY KEY for the table. pList is a list of names +** Tag the given column as being part of the PRIMARY KEY +*/ +static void makeColumnPartOfPrimaryKey(Parse *pParse, Column *pCol){ + pCol->colFlags |= COLFLAG_PRIMKEY; +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( pCol->colFlags & COLFLAG_GENERATED ){ + testcase( pCol->colFlags & COLFLAG_VIRTUAL ); + testcase( pCol->colFlags & COLFLAG_STORED ); + sqlite3ErrorMsg(pParse, + "generated columns cannot be part of the PRIMARY KEY"); + } +#endif +} + +/* +** Designate the PRIMARY KEY for the table. pList is a list of names ** of columns that form the primary key. If pList is NULL, then the ** most recently added column of the table is the primary key. ** @@ -105258,7 +121219,7 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( int nTerm; if( pTab==0 ) goto primary_key_exit; if( pTab->tabFlags & TF_HasPrimaryKey ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "table \"%s\" has more than one primary key", pTab->zName); goto primary_key_exit; } @@ -105266,7 +121227,7 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( if( pList==0 ){ iCol = pTab->nCol - 1; pCol = &pTab->aCol[iCol]; - pCol->colFlags |= COLFLAG_PRIMKEY; + makeColumnPartOfPrimaryKey(pParse, pCol); nTerm = 1; }else{ nTerm = pList->nExpr; @@ -105275,11 +121236,13 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( assert( pCExpr!=0 ); sqlite3StringToId(pCExpr); if( pCExpr->op==TK_ID ){ - const char *zCName = pCExpr->u.zToken; + const char *zCName; + assert( !ExprHasProperty(pCExpr, EP_IntValue) ); + zCName = pCExpr->u.zToken; for(iCol=0; iColnCol; iCol++){ - if( sqlite3StrICmp(zCName, pTab->aCol[iCol].zName)==0 ){ + if( sqlite3StrICmp(zCName, pTab->aCol[iCol].zCnName)==0 ){ pCol = &pTab->aCol[iCol]; - pCol->colFlags |= COLFLAG_PRIMKEY; + makeColumnPartOfPrimaryKey(pParse, pCol); break; } } @@ -105288,14 +121251,19 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( } if( nTerm==1 && pCol - && sqlite3StrICmp(sqlite3ColumnType(pCol,""), "INTEGER")==0 + && pCol->eCType==COLTYPE_INTEGER && sortOrder!=SQLITE_SO_DESC ){ + if( IN_RENAME_OBJECT && pList ){ + Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[0].pExpr); + sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pCExpr); + } pTab->iPKey = iCol; pTab->keyConf = (u8)onError; assert( autoInc==0 || autoInc==1 ); pTab->tabFlags |= autoInc*TF_Autoincrement; - if( pList ) pParse->iPkSortOrder = pList->a[0].sortOrder; + if( pList ) pParse->iPkSortOrder = pList->a[0].fg.sortFlags; + (void)sqlite3HasExplicitNulls(pParse, pList); }else if( autoInc ){ #ifndef SQLITE_OMIT_AUTOINCREMENT sqlite3ErrorMsg(pParse, "AUTOINCREMENT is only allowed on an " @@ -105316,8 +121284,10 @@ primary_key_exit: ** Add a new CHECK constraint to the table currently under construction. */ SQLITE_PRIVATE void sqlite3AddCheckConstraint( - Parse *pParse, /* Parsing context */ - Expr *pCheckExpr /* The check expression */ + Parse *pParse, /* Parsing context */ + Expr *pCheckExpr, /* The check expression */ + const char *zStart, /* Opening "(" */ + const char *zEnd /* Closing ")" */ ){ #ifndef SQLITE_OMIT_CHECK Table *pTab = pParse->pNewTable; @@ -105328,6 +121298,13 @@ SQLITE_PRIVATE void sqlite3AddCheckConstraint( pTab->pCheck = sqlite3ExprListAppend(pParse, pTab->pCheck, pCheckExpr); if( pParse->constraintName.n ){ sqlite3ExprListSetName(pParse, pTab->pCheck, &pParse->constraintName, 1); + }else{ + Token t; + for(zStart++; sqlite3Isspace(zStart[0]); zStart++){} + while( sqlite3Isspace(zEnd[-1]) ){ zEnd--; } + t.z = zStart; + t.n = (int)(zEnd - t.z); + sqlite3ExprListSetName(pParse, pTab->pCheck, &t, 1); } }else #endif @@ -105346,7 +121323,7 @@ SQLITE_PRIVATE void sqlite3AddCollateType(Parse *pParse, Token *pToken){ char *zColl; /* Dequoted name of collation sequence */ sqlite3 *db; - if( (p = pParse->pNewTable)==0 ) return; + if( (p = pParse->pNewTable)==0 || IN_RENAME_OBJECT ) return; i = p->nCol-1; db = pParse->db; zColl = sqlite3NameFromToken(db, pToken); @@ -105354,9 +121331,8 @@ SQLITE_PRIVATE void sqlite3AddCollateType(Parse *pParse, Token *pToken){ if( sqlite3LocateCollSeq(pParse, zColl) ){ Index *pIdx; - sqlite3DbFree(db, p->aCol[i].zColl); - p->aCol[i].zColl = zColl; - + sqlite3ColumnSetColl(db, &p->aCol[i], zColl); + /* If the column is declared as " PRIMARY KEY COLLATE ", ** then an index may have been created on this column before the ** collation type was added. Correct this if it is the case. @@ -105364,49 +121340,73 @@ SQLITE_PRIVATE void sqlite3AddCollateType(Parse *pParse, Token *pToken){ for(pIdx=p->pIndex; pIdx; pIdx=pIdx->pNext){ assert( pIdx->nKeyCol==1 ); if( pIdx->aiColumn[0]==i ){ - pIdx->azColl[0] = p->aCol[i].zColl; + pIdx->azColl[0] = sqlite3ColumnColl(&p->aCol[i]); } } - }else{ - sqlite3DbFree(db, zColl); } + sqlite3DbFree(db, zColl); } -/* -** This function returns the collation sequence for database native text -** encoding identified by the string zName, length nName. -** -** If the requested collation sequence is not available, or not available -** in the database native encoding, the collation factory is invoked to -** request it. If the collation factory does not supply such a sequence, -** and the sequence is available in another text encoding, then that is -** returned instead. -** -** If no versions of the requested collations sequence are available, or -** another error occurs, NULL is returned and an error message written into -** pParse. -** -** This routine is a wrapper around sqlite3FindCollSeq(). This routine -** invokes the collation factory if the named collation cannot be found -** and generates an error message. -** -** See also: sqlite3FindCollSeq(), sqlite3GetCollSeq() +/* Change the most recently parsed column to be a GENERATED ALWAYS AS +** column. */ -SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){ - sqlite3 *db = pParse->db; - u8 enc = ENC(db); - u8 initbusy = db->init.busy; - CollSeq *pColl; - - pColl = sqlite3FindCollSeq(db, enc, zName, initbusy); - if( !initbusy && (!pColl || !pColl->xCmp) ){ - pColl = sqlite3GetCollSeq(pParse, enc, pColl, zName); +SQLITE_PRIVATE void sqlite3AddGenerated(Parse *pParse, Expr *pExpr, Token *pType){ +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + u8 eType = COLFLAG_VIRTUAL; + Table *pTab = pParse->pNewTable; + Column *pCol; + if( pTab==0 ){ + /* generated column in an CREATE TABLE IF NOT EXISTS that already exists */ + goto generated_done; } + pCol = &(pTab->aCol[pTab->nCol-1]); + if( IN_DECLARE_VTAB ){ + sqlite3ErrorMsg(pParse, "virtual tables cannot use computed columns"); + goto generated_done; + } + if( pCol->iDflt>0 ) goto generated_error; + if( pType ){ + if( pType->n==7 && sqlite3StrNICmp("virtual",pType->z,7)==0 ){ + /* no-op */ + }else if( pType->n==6 && sqlite3StrNICmp("stored",pType->z,6)==0 ){ + eType = COLFLAG_STORED; + }else{ + goto generated_error; + } + } + if( eType==COLFLAG_VIRTUAL ) pTab->nNVCol--; + pCol->colFlags |= eType; + assert( TF_HasVirtual==COLFLAG_VIRTUAL ); + assert( TF_HasStored==COLFLAG_STORED ); + pTab->tabFlags |= eType; + if( pCol->colFlags & COLFLAG_PRIMKEY ){ + makeColumnPartOfPrimaryKey(pParse, pCol); /* For the error message */ + } + if( ALWAYS(pExpr) && pExpr->op==TK_ID ){ + /* The value of a generated column needs to be a real expression, not + ** just a reference to another column, in order for covering index + ** optimizations to work correctly. So if the value is not an expression, + ** turn it into one by adding a unary "+" operator. */ + pExpr = sqlite3PExpr(pParse, TK_UPLUS, pExpr, 0); + } + if( pExpr && pExpr->op!=TK_RAISE ) pExpr->affExpr = pCol->affinity; + sqlite3ColumnSetExpr(pParse, pTab, pCol, pExpr); + pExpr = 0; + goto generated_done; - return pColl; +generated_error: + sqlite3ErrorMsg(pParse, "error in generated column \"%s\"", + pCol->zCnName); +generated_done: + sqlite3ExprDelete(pParse->db, pExpr); +#else + /* Throw and error for the GENERATED ALWAYS AS clause if the + ** SQLITE_OMIT_GENERATED_COLUMNS compile-time option is used. */ + sqlite3ErrorMsg(pParse, "generated columns not supported"); + sqlite3ExprDelete(pParse->db, pExpr); +#endif } - /* ** Generate code that will increment the schema cookie. ** @@ -105430,7 +121430,7 @@ SQLITE_PRIVATE void sqlite3ChangeCookie(Parse *pParse, int iDb){ sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, (int)(1+(unsigned)db->aDb[iDb].pSchema->schema_cookie)); } @@ -105451,14 +121451,14 @@ static int identLength(const char *z){ } /* -** The first parameter is a pointer to an output buffer. The second +** The first parameter is a pointer to an output buffer. The second ** parameter is a pointer to an integer that contains the offset at ** which to write into the output buffer. This function copies the ** nul-terminated string pointed to by the third parameter, zSignedIdent, ** to the specified offset in the buffer and updates *pIdx to refer ** to the first byte after the last byte written before returning. -** -** If the string zSignedIdent consists entirely of alpha-numeric +** +** If the string zSignedIdent consists entirely of alphanumeric ** characters, does not begin with a digit and is not an SQL keyword, ** then it is copied to the output buffer exactly as it is. Otherwise, ** it is quoted using double-quotes. @@ -105498,10 +121498,10 @@ static char *createTableStmt(sqlite3 *db, Table *p){ Column *pCol; n = 0; for(pCol = p->aCol, i=0; inCol; i++, pCol++){ - n += identLength(pCol->zName) + 5; + n += identLength(pCol->zCnName) + 5; } n += identLength(p->zName); - if( n<50 ){ + if( n<50 ){ zSep = ""; zSep2 = ","; zEnd = ")"; @@ -105526,7 +121526,8 @@ static char *createTableStmt(sqlite3 *db, Table *p){ /* SQLITE_AFF_TEXT */ " TEXT", /* SQLITE_AFF_NUMERIC */ " NUM", /* SQLITE_AFF_INTEGER */ " INT", - /* SQLITE_AFF_REAL */ " REAL" + /* SQLITE_AFF_REAL */ " REAL", + /* SQLITE_AFF_FLEXNUM */ " NUM", }; int len; const char *zType; @@ -105534,7 +121535,7 @@ static char *createTableStmt(sqlite3 *db, Table *p){ sqlite3_snprintf(n-k, &zStmt[k], zSep); k += sqlite3Strlen30(&zStmt[k]); zSep = zSep2; - identPut(zStmt, &k, pCol->zName); + identPut(zStmt, &k, pCol->zCnName); assert( pCol->affinity-SQLITE_AFF_BLOB >= 0 ); assert( pCol->affinity-SQLITE_AFF_BLOB < ArraySize(azType) ); testcase( pCol->affinity==SQLITE_AFF_BLOB ); @@ -105542,10 +121543,12 @@ static char *createTableStmt(sqlite3 *db, Table *p){ testcase( pCol->affinity==SQLITE_AFF_NUMERIC ); testcase( pCol->affinity==SQLITE_AFF_INTEGER ); testcase( pCol->affinity==SQLITE_AFF_REAL ); - + testcase( pCol->affinity==SQLITE_AFF_FLEXNUM ); + zType = azType[pCol->affinity - SQLITE_AFF_BLOB]; len = sqlite3Strlen30(zType); - assert( pCol->affinity==SQLITE_AFF_BLOB + assert( pCol->affinity==SQLITE_AFF_BLOB + || pCol->affinity==SQLITE_AFF_FLEXNUM || pCol->affinity==sqlite3AffinityType(zType, 0) ); memcpy(&zStmt[k], zType, len); k += len; @@ -105564,12 +121567,15 @@ static int resizeIndexObject(sqlite3 *db, Index *pIdx, int N){ int nByte; if( pIdx->nColumn>=N ) return SQLITE_OK; assert( pIdx->isResized==0 ); - nByte = (sizeof(char*) + sizeof(i16) + 1)*N; + nByte = (sizeof(char*) + sizeof(LogEst) + sizeof(i16) + 1)*N; zExtra = sqlite3DbMallocZero(db, nByte); if( zExtra==0 ) return SQLITE_NOMEM_BKPT; memcpy(zExtra, pIdx->azColl, sizeof(char*)*pIdx->nColumn); pIdx->azColl = (const char**)zExtra; zExtra += sizeof(char*)*N; + memcpy(zExtra, pIdx->aiRowLogEst, sizeof(LogEst)*(pIdx->nKeyCol+1)); + pIdx->aiRowLogEst = (LogEst*)zExtra; + zExtra += sizeof(LogEst)*N; memcpy(zExtra, pIdx->aiColumn, sizeof(i16)*pIdx->nColumn); pIdx->aiColumn = (i16*)zExtra; zExtra += sizeof(i16)*N; @@ -105604,18 +121610,93 @@ static void estimateIndexWidth(Index *pIdx){ for(i=0; inColumn; i++){ i16 x = pIdx->aiColumn[i]; assert( xpTable->nCol ); - wIndex += x<0 ? 1 : aCol[pIdx->aiColumn[i]].szEst; + wIndex += x<0 ? 1 : aCol[x].szEst; } pIdx->szIdxRow = sqlite3LogEst(wIndex*4); } -/* Return true if value x is found any of the first nCol entries of aiCol[] +/* Return true if column number x is any of the first nCol entries of aiCol[]. +** This is used to determine if the column number x appears in any of the +** first nCol entries of an index. */ static int hasColumn(const i16 *aiCol, int nCol, int x){ - while( nCol-- > 0 ) if( x==*(aiCol++) ) return 1; + while( nCol-- > 0 ){ + if( x==*(aiCol++) ){ + return 1; + } + } return 0; } +/* +** Return true if any of the first nKey entries of index pIdx exactly +** match the iCol-th entry of pPk. pPk is always a WITHOUT ROWID +** PRIMARY KEY index. pIdx is an index on the same table. pIdx may +** or may not be the same index as pPk. +** +** The first nKey entries of pIdx are guaranteed to be ordinary columns, +** not a rowid or expression. +** +** This routine differs from hasColumn() in that both the column and the +** collating sequence must match for this routine, but for hasColumn() only +** the column name must match. +*/ +static int isDupColumn(Index *pIdx, int nKey, Index *pPk, int iCol){ + int i, j; + assert( nKey<=pIdx->nColumn ); + assert( iColnColumn,pPk->nKeyCol) ); + assert( pPk->idxType==SQLITE_IDXTYPE_PRIMARYKEY ); + assert( pPk->pTable->tabFlags & TF_WithoutRowid ); + assert( pPk->pTable==pIdx->pTable ); + testcase( pPk==pIdx ); + j = pPk->aiColumn[iCol]; + assert( j!=XN_ROWID && j!=XN_EXPR ); + for(i=0; iaiColumn[i]>=0 || j>=0 ); + if( pIdx->aiColumn[i]==j + && sqlite3StrICmp(pIdx->azColl[i], pPk->azColl[iCol])==0 + ){ + return 1; + } + } + return 0; +} + +/* Recompute the colNotIdxed field of the Index. +** +** colNotIdxed is a bitmask that has a 0 bit representing each indexed +** columns that are within the first 63 columns of the table and a 1 for +** all other bits (all columns that are not in the index). The +** high-order bit of colNotIdxed is always 1. All unindexed columns +** of the table have a 1. +** +** 2019-10-24: For the purpose of this computation, virtual columns are +** not considered to be covered by the index, even if they are in the +** index, because we do not trust the logic in whereIndexExprTrans() to be +** able to find all instances of a reference to the indexed table column +** and convert them into references to the index. Hence we always want +** the actual table at hand in order to recompute the virtual column, if +** necessary. +** +** The colNotIdxed mask is AND-ed with the SrcList.a[].colUsed mask +** to determine if the index is covering index. +*/ +static void recomputeColumnsNotIndexed(Index *pIdx){ + Bitmask m = 0; + int j; + Table *pTab = pIdx->pTable; + for(j=pIdx->nColumn-1; j>=0; j--){ + int x = pIdx->aiColumn[j]; + if( x>=0 && (pTab->aCol[x].colFlags & COLFLAG_VIRTUAL)==0 ){ + testcase( x==BMS-1 ); + testcase( x==BMS-2 ); + if( xcolNotIdxed = ~m; + assert( (pIdx->colNotIdxed>>63)==1 ); /* See note-20221022-a */ +} + /* ** This routine runs at the end of parsing a CREATE TABLE statement that ** has a WITHOUT ROWID clause. The job of this routine is to convert both @@ -105624,11 +121705,11 @@ static int hasColumn(const i16 *aiCol, int nCol, int x){ ** Changes include: ** ** (1) Set all columns of the PRIMARY KEY schema object to be NOT NULL. -** (2) Convert P3 parameter of the OP_CreateBtree from BTREE_INTKEY +** (2) Convert P3 parameter of the OP_CreateBtree from BTREE_INTKEY ** into BTREE_BLOBKEY. -** (3) Bypass the creation of the sqlite_master table entry +** (3) Bypass the creation of the sqlite_schema table entry ** for the PRIMARY KEY as the primary key index is now -** identified by the sqlite_master table entry of the table itself. +** identified by the sqlite_schema table entry of the table itself. ** (4) Set the Index.tnum of the PRIMARY KEY Index object in the ** schema to the rootpage from the main table. ** (5) Add all table columns to the PRIMARY KEY Index object @@ -105644,6 +121725,7 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ Index *pIdx; Index *pPk; int nPk; + int nExtra; int i, j; sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; @@ -105652,43 +121734,55 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ */ if( !db->init.imposterTable ){ for(i=0; inCol; i++){ - if( (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0 ){ + if( (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0 + && (pTab->aCol[i].notNull==OE_None) + ){ pTab->aCol[i].notNull = OE_Abort; } } + pTab->tabFlags |= TF_HasNotNull; } - /* The remaining transformations only apply to b-tree tables, not to - ** virtual tables */ - if( IN_DECLARE_VTAB ) return; - /* Convert the P3 operand of the OP_CreateBtree opcode from BTREE_INTKEY ** into BTREE_BLOBKEY. */ - if( pParse->addrCrTab ){ + assert( !pParse->bReturning ); + if( pParse->u1.addrCrTab ){ assert( v ); - sqlite3VdbeChangeP3(v, pParse->addrCrTab, BTREE_BLOBKEY); + sqlite3VdbeChangeP3(v, pParse->u1.addrCrTab, BTREE_BLOBKEY); } /* Locate the PRIMARY KEY index. Or, if this table was originally - ** an INTEGER PRIMARY KEY table, create a new PRIMARY KEY index. + ** an INTEGER PRIMARY KEY table, create a new PRIMARY KEY index. */ if( pTab->iPKey>=0 ){ ExprList *pList; Token ipkToken; - sqlite3TokenInit(&ipkToken, pTab->aCol[pTab->iPKey].zName); - pList = sqlite3ExprListAppend(pParse, 0, + sqlite3TokenInit(&ipkToken, pTab->aCol[pTab->iPKey].zCnName); + pList = sqlite3ExprListAppend(pParse, 0, sqlite3ExprAlloc(db, TK_ID, &ipkToken, 0)); - if( pList==0 ) return; - pList->a[0].sortOrder = pParse->iPkSortOrder; + if( pList==0 ){ + pTab->tabFlags &= ~TF_WithoutRowid; + return; + } + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, pList->a[0].pExpr, &pTab->iPKey); + } + pList->a[0].fg.sortFlags = pParse->iPkSortOrder; assert( pParse->pNewTable==pTab ); + pTab->iPKey = -1; sqlite3CreateIndex(pParse, 0, 0, 0, pList, pTab->keyConf, 0, 0, 0, 0, SQLITE_IDXTYPE_PRIMARYKEY); - if( db->mallocFailed ) return; + if( pParse->nErr ){ + pTab->tabFlags &= ~TF_WithoutRowid; + return; + } + assert( db->mallocFailed==0 ); pPk = sqlite3PrimaryKeyIndex(pTab); - pTab->iPKey = -1; + assert( pPk->nKeyCol==1 ); }else{ pPk = sqlite3PrimaryKeyIndex(pTab); + assert( pPk!=0 ); /* ** Remove all redundant columns from the PRIMARY KEY. For example, change @@ -105696,9 +121790,12 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ ** code assumes the PRIMARY KEY contains no repeated columns. */ for(i=j=1; inKeyCol; i++){ - if( hasColumn(pPk->aiColumn, j, pPk->aiColumn[i]) ){ + if( isDupColumn(pPk, j, pPk, i) ){ pPk->nColumn--; }else{ + testcase( hasColumn(pPk->aiColumn, j, pPk->aiColumn[i]) ); + pPk->azColl[j] = pPk->azColl[i]; + pPk->aSortOrder[j] = pPk->aSortOrder[i]; pPk->aiColumn[j++] = pPk->aiColumn[i]; } } @@ -105707,15 +121804,15 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ assert( pPk!=0 ); pPk->isCovering = 1; if( !db->init.imposterTable ) pPk->uniqNotNull = 1; - nPk = pPk->nKeyCol; + nPk = pPk->nColumn = pPk->nKeyCol; - /* Bypass the creation of the PRIMARY KEY btree and the sqlite_master + /* Bypass the creation of the PRIMARY KEY btree and the sqlite_schema ** table entry. This is only required if currently generating VDBE ** code for a CREATE TABLE (not when parsing one as part of reading ** a database schema). */ if( v && pPk->tnum>0 ){ assert( db->init.busy==0 ); - sqlite3VdbeChangeOpcode(v, pPk->tnum, OP_Goto); + sqlite3VdbeChangeOpcode(v, (int)pPk->tnum, OP_Goto); } /* The root page of the PRIMARY KEY is the table root page */ @@ -105728,7 +121825,10 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ int n; if( IsPrimaryKeyIndex(pIdx) ) continue; for(i=n=0; iaiColumn, pIdx->nKeyCol, pPk->aiColumn[i]) ) n++; + if( !isDupColumn(pIdx, pIdx->nKeyCol, pPk, i) ){ + testcase( hasColumn(pIdx->aiColumn, pIdx->nKeyCol, pPk->aiColumn[i]) ); + n++; + } } if( n==0 ){ /* This index is a superset of the primary key */ @@ -105737,9 +121837,14 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ } if( resizeIndexObject(db, pIdx, pIdx->nKeyCol+n) ) return; for(i=0, j=pIdx->nKeyCol; iaiColumn, pIdx->nKeyCol, pPk->aiColumn[i]) ){ + if( !isDupColumn(pIdx, pIdx->nKeyCol, pPk, i) ){ + testcase( hasColumn(pIdx->aiColumn, pIdx->nKeyCol, pPk->aiColumn[i]) ); pIdx->aiColumn[j] = pPk->aiColumn[i]; pIdx->azColl[j] = pPk->azColl[i]; + if( pPk->aSortOrder[i] ){ + /* See ticket https://www.sqlite.org/src/info/bba7b69f9849b5bf */ + pIdx->bAscKeyBug = 1; + } j++; } } @@ -105749,22 +121854,133 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ /* Add all table columns to the PRIMARY KEY index */ - if( nPknCol ){ - if( resizeIndexObject(db, pPk, pTab->nCol) ) return; - for(i=0, j=nPk; inCol; i++){ - if( !hasColumn(pPk->aiColumn, j, i) ){ - assert( jnColumn ); - pPk->aiColumn[j] = i; - pPk->azColl[j] = sqlite3StrBINARY; - j++; - } + nExtra = 0; + for(i=0; inCol; i++){ + if( !hasColumn(pPk->aiColumn, nPk, i) + && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ) nExtra++; + } + if( resizeIndexObject(db, pPk, nPk+nExtra) ) return; + for(i=0, j=nPk; inCol; i++){ + if( !hasColumn(pPk->aiColumn, j, i) + && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 + ){ + assert( jnColumn ); + pPk->aiColumn[j] = i; + pPk->azColl[j] = sqlite3StrBINARY; + j++; + } + } + assert( pPk->nColumn==j ); + assert( pTab->nNVCol<=j ); + recomputeColumnsNotIndexed(pPk); +} + + +#ifndef SQLITE_OMIT_VIRTUALTABLE +/* +** Return true if pTab is a virtual table and zName is a shadow table name +** for that virtual table. +*/ +SQLITE_PRIVATE int sqlite3IsShadowTableOf(sqlite3 *db, Table *pTab, const char *zName){ + int nName; /* Length of zName */ + Module *pMod; /* Module for the virtual table */ + + if( !IsVirtual(pTab) ) return 0; + nName = sqlite3Strlen30(pTab->zName); + if( sqlite3_strnicmp(zName, pTab->zName, nName)!=0 ) return 0; + if( zName[nName]!='_' ) return 0; + pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->u.vtab.azArg[0]); + if( pMod==0 ) return 0; + if( pMod->pModule->iVersion<3 ) return 0; + if( pMod->pModule->xShadowName==0 ) return 0; + return pMod->pModule->xShadowName(zName+nName+1); +} +#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */ + +#ifndef SQLITE_OMIT_VIRTUALTABLE +/* +** Table pTab is a virtual table. If it the virtual table implementation +** exists and has an xShadowName method, then loop over all other ordinary +** tables within the same schema looking for shadow tables of pTab, and mark +** any shadow tables seen using the TF_Shadow flag. +*/ +SQLITE_PRIVATE void sqlite3MarkAllShadowTablesOf(sqlite3 *db, Table *pTab){ + int nName; /* Length of pTab->zName */ + Module *pMod; /* Module for the virtual table */ + HashElem *k; /* For looping through the symbol table */ + + assert( IsVirtual(pTab) ); + pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->u.vtab.azArg[0]); + if( pMod==0 ) return; + if( NEVER(pMod->pModule==0) ) return; + if( pMod->pModule->iVersion<3 ) return; + if( pMod->pModule->xShadowName==0 ) return; + assert( pTab->zName!=0 ); + nName = sqlite3Strlen30(pTab->zName); + for(k=sqliteHashFirst(&pTab->pSchema->tblHash); k; k=sqliteHashNext(k)){ + Table *pOther = sqliteHashData(k); + assert( pOther->zName!=0 ); + if( !IsOrdinaryTable(pOther) ) continue; + if( pOther->tabFlags & TF_Shadow ) continue; + if( sqlite3StrNICmp(pOther->zName, pTab->zName, nName)==0 + && pOther->zName[nName]=='_' + && pMod->pModule->xShadowName(pOther->zName+nName+1) + ){ + pOther->tabFlags |= TF_Shadow; } - assert( pPk->nColumn==j ); - assert( pTab->nCol==j ); - }else{ - pPk->nColumn = pTab->nCol; } } +#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */ + +#ifndef SQLITE_OMIT_VIRTUALTABLE +/* +** Return true if zName is a shadow table name in the current database +** connection. +** +** zName is temporarily modified while this routine is running, but is +** restored to its original value prior to this routine returning. +*/ +SQLITE_PRIVATE int sqlite3ShadowTableName(sqlite3 *db, const char *zName){ + char *zTail; /* Pointer to the last "_" in zName */ + Table *pTab; /* Table that zName is a shadow of */ + zTail = strrchr(zName, '_'); + if( zTail==0 ) return 0; + *zTail = 0; + pTab = sqlite3FindTable(db, zName, 0); + *zTail = '_'; + if( pTab==0 ) return 0; + if( !IsVirtual(pTab) ) return 0; + return sqlite3IsShadowTableOf(db, pTab, zName); +} +#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */ + + +#ifdef SQLITE_DEBUG +/* +** Mark all nodes of an expression as EP_Immutable, indicating that +** they should not be changed. Expressions attached to a table or +** index definition are tagged this way to help ensure that we do +** not pass them into code generator routines by mistake. +*/ +static int markImmutableExprStep(Walker *pWalker, Expr *pExpr){ + (void)pWalker; + ExprSetVVAProperty(pExpr, EP_Immutable); + return WRC_Continue; +} +static void markExprListImmutable(ExprList *pList){ + if( pList ){ + Walker w; + memset(&w, 0, sizeof(w)); + w.xExprCallback = markImmutableExprStep; + w.xSelectCallback = sqlite3SelectWalkNoop; + w.xSelectCallback2 = 0; + sqlite3WalkExprList(&w, pList); + } +} +#else +#define markExprListImmutable(X) /* no-op */ +#endif /* SQLITE_DEBUG */ + /* ** This routine is called to report the final ")" that terminates @@ -105774,15 +121990,15 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ ** is added to the internal hash tables, assuming no errors have ** occurred. ** -** An entry for the table is made in the master table on disk, unless +** An entry for the table is made in the schema table on disk, unless ** this is a temporary table or db->init.busy==1. When db->init.busy==1 -** it means we are reading the sqlite_master table because we just -** connected to the database or because the sqlite_master table has +** it means we are reading the sqlite_schema table because we just +** connected to the database or because the sqlite_schema table has ** recently changed, so the entry for this table already exists in -** the sqlite_master table. We do not want to create it again. +** the sqlite_schema table. We do not want to create it again. ** ** If the pSelect argument is not NULL, it means that this routine -** was called to create a table generated from a +** was called to create a table generated from a ** "CREATE TABLE ... AS SELECT ..." statement. The column names of ** the new table will match the result set of the SELECT. */ @@ -105790,7 +122006,7 @@ SQLITE_PRIVATE void sqlite3EndTable( Parse *pParse, /* Parse context */ Token *pCons, /* The ',' token after the last column defn. */ Token *pEnd, /* The ')' before options in the CREATE TABLE */ - u8 tabOpts, /* Extra table options. Usually 0. */ + u32 tabOpts, /* Extra table options. Usually 0. */ Select *pSelect /* Select from a "CREATE ... AS SELECT" */ ){ Table *p; /* The new table */ @@ -105801,21 +122017,24 @@ SQLITE_PRIVATE void sqlite3EndTable( if( pEnd==0 && pSelect==0 ){ return; } - assert( !db->mallocFailed ); p = pParse->pNewTable; if( p==0 ) return; + if( pSelect==0 && sqlite3ShadowTableName(db, p->zName) ){ + p->tabFlags |= TF_Shadow; + } + /* If the db->init.busy is 1 it means we are reading the SQL off the - ** "sqlite_master" or "sqlite_temp_master" table on the disk. + ** "sqlite_schema" or "sqlite_temp_schema" table on the disk. ** So do not write to the disk again. Extract the root page number ** for the table from the db->init.newTnum field. (The page number ** should have been put there by the sqliteOpenCb routine.) ** - ** If the root page number is 1, that means this is the sqlite_master + ** If the root page number is 1, that means this is the sqlite_schema ** table itself. So mark it read-only. */ if( db->init.busy ){ - if( pSelect ){ + if( pSelect || (!IsOrdinaryTable(p) && db->init.newTnum) ){ sqlite3ErrorMsg(pParse, ""); return; } @@ -105823,6 +122042,49 @@ SQLITE_PRIVATE void sqlite3EndTable( if( p->tnum==1 ) p->tabFlags |= TF_Readonly; } + /* Special processing for tables that include the STRICT keyword: + ** + ** * Do not allow custom column datatypes. Every column must have + ** a datatype that is one of INT, INTEGER, REAL, TEXT, or BLOB. + ** + ** * If a PRIMARY KEY is defined, other than the INTEGER PRIMARY KEY, + ** then all columns of the PRIMARY KEY must have a NOT NULL + ** constraint. + */ + if( tabOpts & TF_Strict ){ + int ii; + p->tabFlags |= TF_Strict; + for(ii=0; iinCol; ii++){ + Column *pCol = &p->aCol[ii]; + if( pCol->eCType==COLTYPE_CUSTOM ){ + if( pCol->colFlags & COLFLAG_HASTYPE ){ + sqlite3ErrorMsg(pParse, + "unknown datatype for %s.%s: \"%s\"", + p->zName, pCol->zCnName, sqlite3ColumnType(pCol, "") + ); + }else{ + sqlite3ErrorMsg(pParse, "missing datatype for %s.%s", + p->zName, pCol->zCnName); + } + return; + }else if( pCol->eCType==COLTYPE_ANY ){ + pCol->affinity = SQLITE_AFF_BLOB; + } + if( (pCol->colFlags & COLFLAG_PRIMKEY)!=0 + && p->iPKey!=ii + && pCol->notNull == OE_None + ){ + pCol->notNull = OE_Abort; + p->tabFlags |= TF_HasNotNull; + } + } + } + + assert( (p->tabFlags & TF_HasPrimaryKey)==0 + || p->iPKey>=0 || sqlite3PrimaryKeyIndex(p)!=0 ); + assert( (p->tabFlags & TF_HasPrimaryKey)!=0 + || (p->iPKey<0 && sqlite3PrimaryKeyIndex(p)==0) ); + /* Special processing for WITHOUT ROWID Tables */ if( tabOpts & TF_WithoutRowid ){ if( (p->tabFlags & TF_Autoincrement) ){ @@ -105832,12 +122094,11 @@ SQLITE_PRIVATE void sqlite3EndTable( } if( (p->tabFlags & TF_HasPrimaryKey)==0 ){ sqlite3ErrorMsg(pParse, "PRIMARY KEY missing on table %s", p->zName); - }else{ - p->tabFlags |= TF_WithoutRowid | TF_NoVisibleRowid; - convertToWithoutRowidTable(pParse, p); + return; } + p->tabFlags |= TF_WithoutRowid | TF_NoVisibleRowid; + convertToWithoutRowidTable(pParse, p); } - iDb = sqlite3SchemaToIndex(db, p->pSchema); #ifndef SQLITE_OMIT_CHECK @@ -105845,8 +122106,47 @@ SQLITE_PRIVATE void sqlite3EndTable( */ if( p->pCheck ){ sqlite3ResolveSelfReference(pParse, p, NC_IsCheck, 0, p->pCheck); + if( pParse->nErr ){ + /* If errors are seen, delete the CHECK constraints now, else they might + ** actually be used if PRAGMA writable_schema=ON is set. */ + sqlite3ExprListDelete(db, p->pCheck); + p->pCheck = 0; + }else{ + markExprListImmutable(p->pCheck); + } } #endif /* !defined(SQLITE_OMIT_CHECK) */ +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( p->tabFlags & TF_HasGenerated ){ + int ii, nNG = 0; + testcase( p->tabFlags & TF_HasVirtual ); + testcase( p->tabFlags & TF_HasStored ); + for(ii=0; iinCol; ii++){ + u32 colFlags = p->aCol[ii].colFlags; + if( (colFlags & COLFLAG_GENERATED)!=0 ){ + Expr *pX = sqlite3ColumnExpr(p, &p->aCol[ii]); + testcase( colFlags & COLFLAG_VIRTUAL ); + testcase( colFlags & COLFLAG_STORED ); + if( sqlite3ResolveSelfReference(pParse, p, NC_GenCol, pX, 0) ){ + /* If there are errors in resolving the expression, change the + ** expression to a NULL. This prevents code generators that operate + ** on the expression from inserting extra parts into the expression + ** tree that have been allocated from lookaside memory, which is + ** illegal in a schema and will lead to errors or heap corruption + ** when the database connection closes. */ + sqlite3ColumnSetExpr(pParse, p, &p->aCol[ii], + sqlite3ExprAlloc(db, TK_NULL, 0, 0)); + } + }else{ + nNG++; + } + } + if( nNG==0 ){ + sqlite3ErrorMsg(pParse, "must have at least one non-generated column"); + return; + } + } +#endif /* Estimate the average row size for the table and for all implied indices */ estimateTableWidth(p); @@ -105855,7 +122155,7 @@ SQLITE_PRIVATE void sqlite3EndTable( } /* If not initializing, then create a record for the new table - ** in the SQLITE_MASTER table of the database. + ** in the schema table of the database. ** ** If this is a TEMPORARY table, write the entry into the auxiliary ** file instead of into the main database file. @@ -105872,10 +122172,10 @@ SQLITE_PRIVATE void sqlite3EndTable( sqlite3VdbeAddOp1(v, OP_Close, 0); - /* + /* ** Initialize zType for the new view or table. */ - if( p->pSelect==0 ){ + if( IsOrdinaryTable(p) ){ /* A regular table */ zType = "table"; zType2 = "TABLE"; @@ -105909,6 +122209,11 @@ SQLITE_PRIVATE void sqlite3EndTable( int addrInsLoop; /* Top of the loop for inserting rows */ Table *pSelTab; /* A table that describes the SELECT results */ + if( IN_SPECIAL_PARSE ){ + pParse->rc = SQLITE_ERROR; + pParse->nErr++; + return; + } regYield = ++pParse->nMem; regRec = ++pParse->nMem; regRowid = ++pParse->nMem; @@ -105920,10 +122225,10 @@ SQLITE_PRIVATE void sqlite3EndTable( addrTop = sqlite3VdbeCurrentAddr(v) + 1; sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop); if( pParse->nErr ) return; - pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect); + pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect, SQLITE_AFF_BLOB); if( pSelTab==0 ) return; assert( p->aCol==0 ); - p->nCol = pSelTab->nCol; + p->nCol = p->nNVCol = pSelTab->nCol; p->aCol = pSelTab->aCol; pSelTab->nCol = 0; pSelTab->aCol = 0; @@ -105951,20 +122256,20 @@ SQLITE_PRIVATE void sqlite3EndTable( Token *pEnd2 = tabOpts ? &pParse->sLastToken : pEnd; n = (int)(pEnd2->z - pParse->sNameToken.z); if( pEnd2->z[0]!=';' ) n += pEnd2->n; - zStmt = sqlite3MPrintf(db, + zStmt = sqlite3MPrintf(db, "CREATE %s %.*s", zType2, n, pParse->sNameToken.z ); } - /* A slot for the record has already been allocated in the - ** SQLITE_MASTER table. We just need to update that slot with all + /* A slot for the record has already been allocated in the + ** schema table. We just need to update that slot with all ** the information we've collected. */ sqlite3NestedParse(pParse, - "UPDATE %Q.%s " - "SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q " - "WHERE rowid=#%d", - db->aDb[iDb].zDbSName, MASTER_NAME, + "UPDATE %Q." LEGACY_SCHEMA_TABLE + " SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q" + " WHERE rowid=#%d", + db->aDb[iDb].zDbSName, zType, p->zName, p->zName, @@ -105979,7 +122284,7 @@ SQLITE_PRIVATE void sqlite3EndTable( /* Check to see if we need to create an sqlite_sequence table for ** keeping track of autoincrement keys. */ - if( (p->tabFlags & TF_Autoincrement)!=0 ){ + if( (p->tabFlags & TF_Autoincrement)!=0 && !IN_SPECIAL_PARSE ){ Db *pDb = &db->aDb[iDb]; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( pDb->pSchema->pSeqTab==0 ){ @@ -105993,16 +122298,16 @@ SQLITE_PRIVATE void sqlite3EndTable( /* Reparse everything to update our internal data structures */ sqlite3VdbeAddParseSchemaOp(v, iDb, - sqlite3MPrintf(db, "tbl_name='%q' AND type!='trigger'", p->zName)); + sqlite3MPrintf(db, "tbl_name='%q' AND type!='trigger'", p->zName),0); } - /* Add the table to the in-memory representation of the database. */ if( db->init.busy ){ Table *pOld; Schema *pSchema = p->pSchema; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); + assert( HasRowid(p) || p->iPKey<0 ); pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName, p); if( pOld ){ assert( p==pOld ); /* Malloc must have failed inside HashInsert() */ @@ -106012,19 +122317,27 @@ SQLITE_PRIVATE void sqlite3EndTable( pParse->pNewTable = 0; db->mDbFlags |= DBFLAG_SchemaChange; -#ifndef SQLITE_OMIT_ALTERTABLE - if( !p->pSelect ){ - const char *zName = (const char *)pParse->sNameToken.z; - int nName; - assert( !pSelect && pCons && pEnd ); - if( pCons->z==0 ){ - pCons = pEnd; - } - nName = (int)((const char *)pCons->z - zName); - p->addColOffset = 13 + sqlite3Utf8CharLen(zName, nName); + /* If this is the magic sqlite_sequence table used by autoincrement, + ** then record a pointer to this table in the main database structure + ** so that INSERT can find the table easily. */ + assert( !pParse->nested ); +#ifndef SQLITE_OMIT_AUTOINCREMENT + if( strcmp(p->zName, "sqlite_sequence")==0 ){ + assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); + p->pSchema->pSeqTab = p; } #endif } + +#ifndef SQLITE_OMIT_ALTERTABLE + if( !pSelect && IsOrdinaryTable(p) ){ + assert( pCons && pEnd ); + if( pCons->z==0 ){ + pCons = pEnd; + } + p->u.tab.addColOffset = 13 + (int)(pCons->z - pParse->sNameToken.z); + } +#endif } #ifndef SQLITE_OMIT_VIEW @@ -106057,6 +122370,16 @@ SQLITE_PRIVATE void sqlite3CreateView( sqlite3StartTable(pParse, pName1, pName2, isTemp, 1, 0, noErr); p = pParse->pNewTable; if( p==0 || pParse->nErr ) goto create_view_fail; + + /* Legacy versions of SQLite allowed the use of the magic "rowid" column + ** on a view, even though views do not have rowids. The following flag + ** setting fixes this problem. But the fix can be disabled by compiling + ** with -DSQLITE_ALLOW_ROWID_IN_VIEW in case there are legacy apps that + ** depend upon the old buggy behavior. */ +#ifndef SQLITE_ALLOW_ROWID_IN_VIEW + p->tabFlags |= TF_NoVisibleRowid; +#endif + sqlite3TwoPartName(pParse, pName1, pName2, &pName); iDb = sqlite3SchemaToIndex(db, p->pSchema); sqlite3FixInit(&sFix, pParse, iDb, "view", pName); @@ -106067,8 +122390,15 @@ SQLITE_PRIVATE void sqlite3CreateView( ** allocated rather than point to the input string - which means that ** they will persist after the current sqlite3_exec() call returns. */ - p->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); + pSelect->selFlags |= SF_View; + if( IN_RENAME_OBJECT ){ + p->u.view.pSelect = pSelect; + pSelect = 0; + }else{ + p->u.view.pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); + } p->pCheck = sqlite3ExprListDup(db, pCNames, EXPRDUP_REDUCE); + p->eTabType = TABTYP_VIEW; if( db->mallocFailed ) goto create_view_fail; /* Locate the end of the CREATE VIEW statement. Make sEnd point to @@ -106087,11 +122417,14 @@ SQLITE_PRIVATE void sqlite3CreateView( sEnd.z = &z[n-1]; sEnd.n = 1; - /* Use sqlite3EndTable() to add the view to the SQLITE_MASTER table */ + /* Use sqlite3EndTable() to add the view to the schema table */ sqlite3EndTable(pParse, 0, &sEnd, 0, 0); create_view_fail: sqlite3SelectDelete(db, pSelect); + if( IN_RENAME_OBJECT ){ + sqlite3RenameExprlistUnmap(pParse, pCNames); + } sqlite3ExprListDelete(db, pCNames); return; } @@ -106103,11 +122436,10 @@ create_view_fail: ** the columns of the view in the pTable structure. Return the number ** of errors. If an error is seen leave an error message in pParse->zErrMsg. */ -SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ +static SQLITE_NOINLINE int viewGetColumnNames(Parse *pParse, Table *pTable){ Table *pSelTab; /* A fake table from which we get the result set */ Select *pSel; /* Copy of the SELECT that implements the view */ int nErr = 0; /* Number of errors encountered */ - int n; /* Temporarily holds the number of cursors assigned */ sqlite3 *db = pParse->db; /* Database connection for malloc errors */ #ifndef SQLITE_OMIT_VIRTUALTABLE int rc; @@ -106119,20 +122451,20 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ assert( pTable ); #ifndef SQLITE_OMIT_VIRTUALTABLE - db->nSchemaLock++; - rc = sqlite3VtabCallConnect(pParse, pTable); - db->nSchemaLock--; - if( rc ){ - return 1; + if( IsVirtual(pTable) ){ + db->nSchemaLock++; + rc = sqlite3VtabCallConnect(pParse, pTable); + db->nSchemaLock--; + return rc; } - if( IsVirtual(pTable) ) return 0; #endif #ifndef SQLITE_OMIT_VIEW /* A positive nCol means the columns names for this view are - ** already known. + ** already known. This routine is not called unless either the + ** table is virtual or nCol is zero. */ - if( pTable->nCol>0 ) return 0; + assert( pTable->nCol<=0 ); /* A negative nCol is a special marker meaning that we are currently ** trying to compute the column names. If we enter this routine with @@ -106144,7 +122476,7 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ ** Actually, the error above is now caught prior to reaching this point. ** But the following test is still important as it does come up ** in the following: - ** + ** ** CREATE TABLE main.ex1(a); ** CREATE TEMP VIEW ex1 AS SELECT a FROM ex1; ** SELECT * FROM temp.ex1; @@ -106162,60 +122494,75 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ ** to be permanent. So the computation is done on a copy of the SELECT ** statement that defines the view. */ - assert( pTable->pSelect ); - pSel = sqlite3SelectDup(db, pTable->pSelect, 0); + assert( IsView(pTable) ); + pSel = sqlite3SelectDup(db, pTable->u.view.pSelect, 0); if( pSel ){ - n = pParse->nTab; + u8 eParseMode = pParse->eParseMode; + int nTab = pParse->nTab; + int nSelect = pParse->nSelect; + pParse->eParseMode = PARSE_MODE_NORMAL; sqlite3SrcListAssignCursors(pParse, pSel->pSrc); pTable->nCol = -1; - db->lookaside.bDisable++; + DisableLookaside; #ifndef SQLITE_OMIT_AUTHORIZATION xAuth = db->xAuth; db->xAuth = 0; - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); + pSelTab = sqlite3ResultSetOfSelect(pParse, pSel, SQLITE_AFF_NONE); db->xAuth = xAuth; #else - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); + pSelTab = sqlite3ResultSetOfSelect(pParse, pSel, SQLITE_AFF_NONE); #endif - pParse->nTab = n; - if( pTable->pCheck ){ + pParse->nTab = nTab; + pParse->nSelect = nSelect; + if( pSelTab==0 ){ + pTable->nCol = 0; + nErr++; + }else if( pTable->pCheck ){ /* CREATE VIEW name(arglist) AS ... ** The names of the columns in the table are taken from ** arglist which is stored in pTable->pCheck. The pCheck field ** normally holds CHECK constraints on an ordinary table, but for ** a VIEW it holds the list of column names. */ - sqlite3ColumnsFromExprList(pParse, pTable->pCheck, + sqlite3ColumnsFromExprList(pParse, pTable->pCheck, &pTable->nCol, &pTable->aCol); - if( db->mallocFailed==0 - && pParse->nErr==0 + if( pParse->nErr==0 && pTable->nCol==pSel->pEList->nExpr ){ - sqlite3SelectAddColumnTypeAndCollation(pParse, pTable, pSel); + assert( db->mallocFailed==0 ); + sqlite3SubqueryColumnTypes(pParse, pTable, pSel, SQLITE_AFF_NONE); } - }else if( pSelTab ){ + }else{ /* CREATE VIEW name AS... without an argument list. Construct ** the column names from the SELECT statement that defines the view. */ assert( pTable->aCol==0 ); pTable->nCol = pSelTab->nCol; pTable->aCol = pSelTab->aCol; + pTable->tabFlags |= (pSelTab->tabFlags & COLFLAG_NOINSERT); pSelTab->nCol = 0; pSelTab->aCol = 0; assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) ); - }else{ - pTable->nCol = 0; - nErr++; } + pTable->nNVCol = pTable->nCol; sqlite3DeleteTable(db, pSelTab); sqlite3SelectDelete(db, pSel); - db->lookaside.bDisable--; + EnableLookaside; + pParse->eParseMode = eParseMode; } else { nErr++; } pTable->pSchema->schemaFlags |= DB_UnresetViews; + if( db->mallocFailed ){ + sqlite3DeleteColumnNames(db, pTable); + } #endif /* SQLITE_OMIT_VIEW */ - return nErr; + return nErr; +} +SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ + assert( pTable!=0 ); + if( !IsVirtual(pTable) && pTable->nCol>0 ) return 0; + return viewGetColumnNames(pParse, pTable); } #endif /* !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) */ @@ -106229,10 +122576,8 @@ static void sqliteViewResetAll(sqlite3 *db, int idx){ if( !DbHasProperty(db, idx, DB_UnresetViews) ) return; for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); - if( pTab->pSelect ){ + if( IsView(pTab) ){ sqlite3DeleteColumnNames(db, pTab); - pTab->aCol = 0; - pTab->nCol = 0; } } DbClearProperty(db, idx, DB_UnresetViews); @@ -106251,7 +122596,7 @@ static void sqliteViewResetAll(sqlite3 *db, int idx){ ** on tables and/or indices that are the process of being deleted. ** If you are unlucky, one of those deleted indices or tables might ** have the same rootpage number as the real table or index that is -** being moved. So we cannot stop searching after the first match +** being moved. So we cannot stop searching after the first match ** because the first match might be for one of the deleted indices ** or tables and not the table/index that is actually being moved. ** We must continue looping until all tables and indices with @@ -106259,7 +122604,7 @@ static void sqliteViewResetAll(sqlite3 *db, int idx){ ** in order to be certain that we got the right one. */ #ifndef SQLITE_OMIT_AUTOVACUUM -SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iTo){ +SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, Pgno iFrom, Pgno iTo){ HashElem *pElem; Hash *pHash; Db *pDb; @@ -106285,43 +122630,44 @@ SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iT /* ** Write code to erase the table with root-page iTable from database iDb. -** Also write code to modify the sqlite_master table and internal schema +** Also write code to modify the sqlite_schema table and internal schema ** if a root-page of another table is moved by the btree-layer whilst ** erasing iTable (this can happen with an auto-vacuum database). -*/ +*/ static void destroyRootPage(Parse *pParse, int iTable, int iDb){ Vdbe *v = sqlite3GetVdbe(pParse); int r1 = sqlite3GetTempReg(pParse); - assert( iTable>1 ); + if( iTable<2 ) sqlite3ErrorMsg(pParse, "corrupt schema"); sqlite3VdbeAddOp3(v, OP_Destroy, iTable, r1, iDb); sqlite3MayAbort(pParse); #ifndef SQLITE_OMIT_AUTOVACUUM /* OP_Destroy stores an in integer r1. If this integer ** is non-zero, then it is the root page number of a table moved to - ** location iTable. The following code modifies the sqlite_master table to + ** location iTable. The following code modifies the sqlite_schema table to ** reflect this. ** ** The "#NNN" in the SQL is a special constant that means whatever value ** is in register NNN. See grammar rules associated with the TK_REGISTER ** token for additional information. */ - sqlite3NestedParse(pParse, - "UPDATE %Q.%s SET rootpage=%d WHERE #%d AND rootpage=#%d", - pParse->db->aDb[iDb].zDbSName, MASTER_NAME, iTable, r1, r1); + sqlite3NestedParse(pParse, + "UPDATE %Q." LEGACY_SCHEMA_TABLE + " SET rootpage=%d WHERE #%d AND rootpage=#%d", + pParse->db->aDb[iDb].zDbSName, iTable, r1, r1); #endif sqlite3ReleaseTempReg(pParse, r1); } /* ** Write VDBE code to erase table pTab and all associated indices on disk. -** Code to update the sqlite_master tables and internal schema definitions +** Code to update the sqlite_schema tables and internal schema definitions ** in case a root-page belonging to another table is moved by the btree layer ** is also added (this can happen with an auto-vacuum database). */ static void destroyTable(Parse *pParse, Table *pTab){ /* If the database may be auto-vacuum capable (if SQLITE_OMIT_AUTOVACUUM ** is not defined), then it is important to call OP_Destroy on the - ** table and index root-pages in order, starting with the numerically + ** table and index root-pages in order, starting with the numerically ** largest root-page number. This guarantees that none of the root-pages ** to be destroyed is relocated by an earlier OP_Destroy. i.e. if the ** following were coded: @@ -106331,22 +122677,22 @@ static void destroyTable(Parse *pParse, Table *pTab){ ** OP_Destroy 5 0 ** ** and root page 5 happened to be the largest root-page number in the - ** database, then root page 5 would be moved to page 4 by the + ** database, then root page 5 would be moved to page 4 by the ** "OP_Destroy 4 0" opcode. The subsequent "OP_Destroy 5 0" would hit ** a free-list page. */ - int iTab = pTab->tnum; - int iDestroyed = 0; + Pgno iTab = pTab->tnum; + Pgno iDestroyed = 0; while( 1 ){ Index *pIdx; - int iLargest = 0; + Pgno iLargest = 0; if( iDestroyed==0 || iTabpIndex; pIdx; pIdx=pIdx->pNext){ - int iIdx = pIdx->tnum; + Pgno iIdx = pIdx->tnum; assert( pIdx->pSchema==pTab->pSchema ); if( (iDestroyed==0 || (iIdxiLargest ){ iLargest = iIdx; @@ -106407,12 +122753,12 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in #endif /* Drop all triggers associated with the table being dropped. Code - ** is generated to remove entries from sqlite_master and/or - ** sqlite_temp_master if required. + ** is generated to remove entries from sqlite_schema and/or + ** sqlite_temp_schema if required. */ pTrigger = sqlite3TriggerList(pParse, pTab); while( pTrigger ){ - assert( pTrigger->pSchema==pTab->pSchema || + assert( pTrigger->pSchema==pTab->pSchema || pTrigger->pSchema==db->aDb[1].pSchema ); sqlite3DropTriggerPtr(pParse, pTrigger); pTrigger = pTrigger->pNext; @@ -106432,16 +122778,17 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in } #endif - /* Drop all SQLITE_MASTER table and index entries that refer to the - ** table. The program name loops through the master table and deletes + /* Drop all entries in the schema table that refer to the + ** table. The program name loops through the schema table and deletes ** every row that refers to a table of the same name as the one being ** dropped. Triggers are handled separately because a trigger can be ** created in the temp database that refers to a table in another ** database. */ - sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'", - pDb->zDbSName, MASTER_NAME, pTab->zName); + sqlite3NestedParse(pParse, + "DELETE FROM %Q." LEGACY_SCHEMA_TABLE + " WHERE tbl_name=%Q and type!='trigger'", + pDb->zDbSName, pTab->zName); if( !isView && !IsVirtual(pTab) ){ destroyTable(pParse, pTab); } @@ -106451,12 +122798,48 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in */ if( IsVirtual(pTab) ){ sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0); + sqlite3MayAbort(pParse); } sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0); sqlite3ChangeCookie(pParse, iDb); sqliteViewResetAll(db, iDb); } +/* +** Return TRUE if shadow tables should be read-only in the current +** context. +*/ +SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db){ +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( (db->flags & SQLITE_Defensive)!=0 + && db->pVtabCtx==0 + && db->nVdbeExec==0 + && !sqlite3VtabInSync(db) + ){ + return 1; + } +#endif + return 0; +} + +/* +** Return true if it is not allowed to drop the given table +*/ +static int tableMayNotBeDropped(sqlite3 *db, Table *pTab){ + if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){ + if( sqlite3StrNICmp(pTab->zName+7, "stat", 4)==0 ) return 0; + if( sqlite3StrNICmp(pTab->zName+7, "parameters", 10)==0 ) return 0; + return 1; + } + if( (pTab->tabFlags & TF_Shadow)!=0 && sqlite3ReadOnlyShadowTables(db) ){ + return 1; + } + if( pTab->tabFlags & TF_Eponymous ){ + return 1; + } + return 0; +} + /* ** This routine is called to do the work of a DROP TABLE statement. ** pName is the name of the table to be dropped. @@ -106479,7 +122862,10 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, if( noErr ) db->suppressErr--; if( pTab==0 ){ - if( noErr ) sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase); + if( noErr ){ + sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase); + sqlite3ForceNotReadOnly(pParse); + } goto exit_drop_table; } iDb = sqlite3SchemaToIndex(db, pTab->pSchema); @@ -106526,8 +122912,7 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, } } #endif - if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 - && sqlite3StrNICmp(pTab->zName, "sqlite_stat", 11)!=0 ){ + if( tableMayNotBeDropped(db, pTab) ){ sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName); goto exit_drop_table; } @@ -106536,24 +122921,26 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, /* Ensure DROP TABLE is not used on a view, and DROP VIEW is not used ** on a table. */ - if( isView && pTab->pSelect==0 ){ + if( isView && !IsView(pTab) ){ sqlite3ErrorMsg(pParse, "use DROP TABLE to delete table %s", pTab->zName); goto exit_drop_table; } - if( !isView && pTab->pSelect ){ + if( !isView && IsView(pTab) ){ sqlite3ErrorMsg(pParse, "use DROP VIEW to delete view %s", pTab->zName); goto exit_drop_table; } #endif - /* Generate code to remove the table from the master table + /* Generate code to remove the table from the schema table ** on disk. */ v = sqlite3GetVdbe(pParse); if( v ){ sqlite3BeginWriteOperation(pParse, 1, iDb); - sqlite3ClearStatTables(pParse, iDb, "tbl", pTab->zName); - sqlite3FkDropTable(pParse, pName, pTab); + if( !isView ){ + sqlite3ClearStatTables(pParse, iDb, "tbl", pTab->zName); + sqlite3FkDropTable(pParse, pName, pTab); + } sqlite3CodeDropTable(pParse, pTab, iDb, isView); } @@ -106589,7 +122976,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( FKey *pFKey = 0; FKey *pNextTo; Table *p = pParse->pNewTable; - int nByte; + i64 nByte; int i; int nCol; char *z; @@ -106602,7 +122989,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( if( pToCol && pToCol->nExpr!=1 ){ sqlite3ErrorMsg(pParse, "foreign key on %s" " should reference only one column of table %T", - p->aCol[iCol].zName, pTo); + p->aCol[iCol].zCnName, pTo); goto fk_end; } nCol = 1; @@ -106617,7 +123004,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( nByte = sizeof(*pFKey) + (nCol-1)*sizeof(pFKey->aCol[0]) + pTo->n + 1; if( pToCol ){ for(i=0; inExpr; i++){ - nByte += sqlite3Strlen30(pToCol->a[i].zName) + 1; + nByte += sqlite3Strlen30(pToCol->a[i].zEName) + 1; } } pFKey = sqlite3DbMallocZero(db, nByte ); @@ -106625,9 +123012,13 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( goto fk_end; } pFKey->pFrom = p; - pFKey->pNextFrom = p->pFKey; + assert( IsOrdinaryTable(p) ); + pFKey->pNextFrom = p->u.tab.pFKey; z = (char*)&pFKey->aCol[nCol]; pFKey->zTo = z; + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenMap(pParse, (void*)z, pTo); + } memcpy(z, pTo->z, pTo->n); z[pTo->n] = 0; sqlite3Dequote(z); @@ -106639,24 +123030,30 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( for(i=0; inCol; j++){ - if( sqlite3StrICmp(p->aCol[j].zName, pFromCol->a[i].zName)==0 ){ + if( sqlite3StrICmp(p->aCol[j].zCnName, pFromCol->a[i].zEName)==0 ){ pFKey->aCol[i].iFrom = j; break; } } if( j>=p->nCol ){ - sqlite3ErrorMsg(pParse, - "unknown column \"%s\" in foreign key definition", - pFromCol->a[i].zName); + sqlite3ErrorMsg(pParse, + "unknown column \"%s\" in foreign key definition", + pFromCol->a[i].zEName); goto fk_end; } + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, &pFKey->aCol[i], pFromCol->a[i].zEName); + } } } if( pToCol ){ for(i=0; ia[i].zName); + int n = sqlite3Strlen30(pToCol->a[i].zEName); pFKey->aCol[i].zCol = z; - memcpy(z, pToCol->a[i].zName, n); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, z, pToCol->a[i].zEName); + } + memcpy(z, pToCol->a[i].zEName, n); z[n] = 0; z += n+1; } @@ -106666,7 +123063,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( pFKey->aAction[1] = (u8)((flags >> 8 ) & 0xff); /* ON UPDATE action */ assert( sqlite3SchemaMutexHeld(db, 0, p->pSchema) ); - pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash, + pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash, pFKey->zTo, (void *)pFKey ); if( pNextTo==pFKey ){ @@ -106681,7 +123078,8 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( /* Link the foreign key to the table as the last step. */ - p->pFKey = pFKey; + assert( IsOrdinaryTable(p) ); + p->u.tab.pFKey = pFKey; pFKey = 0; fk_end: @@ -106702,7 +123100,9 @@ SQLITE_PRIVATE void sqlite3DeferForeignKey(Parse *pParse, int isDeferred){ #ifndef SQLITE_OMIT_FOREIGN_KEY Table *pTab; FKey *pFKey; - if( (pTab = pParse->pNewTable)==0 || (pFKey = pTab->pFKey)==0 ) return; + if( (pTab = pParse->pNewTable)==0 ) return; + if( NEVER(!IsOrdinaryTable(pTab)) ) return; + if( (pFKey = pTab->u.tab.pFKey)==0 ) return; assert( isDeferred==0 || isDeferred==1 ); /* EV: R-30323-21917 */ pFKey->isDeferred = (u8)isDeferred; #endif @@ -106726,7 +123126,7 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ int iSorter; /* Cursor opened by OpenSorter (if in use) */ int addr1; /* Address of top of loop */ int addr2; /* Address to jump to for next iteration */ - int tnum; /* Root page of index */ + Pgno tnum; /* Root page of index */ int iPartIdxLabel; /* Jump to this label to skip a row */ Vdbe *v; /* Generate code into this virtual machine */ KeyInfo *pKey; /* KeyInfo for index */ @@ -106747,12 +123147,12 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ v = sqlite3GetVdbe(pParse); if( v==0 ) return; if( memRootPage>=0 ){ - tnum = memRootPage; + tnum = (Pgno)memRootPage; }else{ tnum = pIndex->tnum; } pKey = sqlite3KeyInfoOfIndex(pParse, pIndex); - assert( pKey!=0 || db->mallocFailed || pParse->nErr ); + assert( pKey!=0 || pParse->nErr ); /* Open the sorter cursor if we are to use one. */ iSorter = pParse->nTab++; @@ -106772,7 +123172,7 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addr1); if( memRootPage<0 ) sqlite3VdbeAddOp2(v, OP_Clear, tnum, iDb); - sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, tnum, iDb, + sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, (int)tnum, iDb, (char *)pKey, P4_KEYINFO); sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR|((memRootPage>=0)?OPFLAG_P2ISREG:0)); @@ -106786,10 +123186,27 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ sqlite3UniqueConstraint(pParse, OE_Abort, pIndex); sqlite3VdbeJumpHere(v, j2); }else{ + /* Most CREATE INDEX and REINDEX statements that are not UNIQUE can not + ** abort. The exception is if one of the indexed expressions contains a + ** user function that throws an exception when it is evaluated. But the + ** overhead of adding a statement journal to a CREATE INDEX statement is + ** very small (since most of the pages written do not contain content that + ** needs to be restored if the statement aborts), so we call + ** sqlite3MayAbort() for all CREATE INDEX statements. */ + sqlite3MayAbort(pParse); addr2 = sqlite3VdbeCurrentAddr(v); } sqlite3VdbeAddOp3(v, OP_SorterData, iSorter, regRecord, iIdx); - sqlite3VdbeAddOp1(v, OP_SeekEnd, iIdx); + if( !pIndex->bAscKeyBug ){ + /* This OP_SeekEnd opcode makes index insert for a REINDEX go much + ** faster by avoiding unnecessary seeks. But the optimization does + ** not work for UNIQUE constraint indexes on WITHOUT ROWID tables + ** with DESC primary keys, since those indexes have there keys in + ** a different order from the main table. + ** See ticket: https://www.sqlite.org/src/info/bba7b69f9849b5bf + */ + sqlite3VdbeAddOp1(v, OP_SeekEnd, iIdx); + } sqlite3VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); sqlite3ReleaseTempReg(pParse, regRecord); @@ -106837,8 +123254,29 @@ SQLITE_PRIVATE Index *sqlite3AllocateIndexObject( } /* -** Create a new index for an SQL table. pName1.pName2 is the name of the index -** and pTblList is the name of the table that is to be indexed. Both will +** If expression list pList contains an expression that was parsed with +** an explicit "NULLS FIRST" or "NULLS LAST" clause, leave an error in +** pParse and return non-zero. Otherwise, return zero. +*/ +SQLITE_PRIVATE int sqlite3HasExplicitNulls(Parse *pParse, ExprList *pList){ + if( pList ){ + int i; + for(i=0; inExpr; i++){ + if( pList->a[i].fg.bNulls ){ + u8 sf = pList->a[i].fg.sortFlags; + sqlite3ErrorMsg(pParse, "unsupported use of NULLS %s", + (sf==0 || sf==3) ? "FIRST" : "LAST" + ); + return 1; + } + } + } + return 0; +} + +/* +** Create a new index for an SQL table. pName1.pName2 is the name of the index +** and pTblList is the name of the table that is to be indexed. Both will ** be NULL for a primary key or an index that is created to satisfy a ** UNIQUE constraint. If pTable and pIndex are NULL, use pParse->pNewTable ** as the table to be indexed. pParse->pNewTable is a table that is @@ -106846,7 +123284,7 @@ SQLITE_PRIVATE Index *sqlite3AllocateIndexObject( ** ** pList is a list of columns to be indexed. pList will be NULL if this ** is a primary key or unique-constraint on the most recent column added -** to the table currently under construction. +** to the table currently under construction. */ SQLITE_PRIVATE void sqlite3CreateIndex( Parse *pParse, /* All information about this parse */ @@ -106878,22 +123316,27 @@ SQLITE_PRIVATE void sqlite3CreateIndex( char *zExtra = 0; /* Extra space after the Index object */ Index *pPk = 0; /* PRIMARY KEY index for WITHOUT ROWID tables */ - if( db->mallocFailed || pParse->nErr>0 ){ + assert( db->pParse==pParse ); + if( pParse->nErr ){ goto exit_create_index; } + assert( db->mallocFailed==0 ); if( IN_DECLARE_VTAB && idxType!=SQLITE_IDXTYPE_PRIMARYKEY ){ goto exit_create_index; } if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ goto exit_create_index; } + if( sqlite3HasExplicitNulls(pParse, pList) ){ + goto exit_create_index; + } /* ** Find the table that is to be indexed. Return early if not found. */ if( pTblName!=0 ){ - /* Use the two-part index name to determine the database + /* Use the two-part index name to determine the database ** to search for the table. 'Fix' the table name to this db ** before looking up the table. */ @@ -106905,7 +123348,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex( #ifndef SQLITE_OMIT_TEMPDB /* If the index name was unqualified, check if the table ** is a temp table. If so, set the database to 1. Do not do this - ** if initialising a database schema. + ** if initializing a database schema. */ if( !db->init.busy ){ pTab = sqlite3SrcListLookup(pParse, pTblName); @@ -106925,7 +123368,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex( assert( db->mallocFailed==0 || pTab==0 ); if( pTab==0 ) goto exit_create_index; if( iDb==1 && db->aDb[iDb].pSchema!=pTab->pSchema ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "cannot create a TEMP index on non-TEMP table \"%s\"", pTab->zName); goto exit_create_index; @@ -106941,22 +123384,18 @@ SQLITE_PRIVATE void sqlite3CreateIndex( pDb = &db->aDb[iDb]; assert( pTab!=0 ); - assert( pParse->nErr==0 ); - if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 + if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 && db->init.busy==0 + && pTblName!=0 #if SQLITE_USER_AUTHENTICATION && sqlite3UserAuthTable(pTab->zName)==0 #endif -#ifdef SQLITE_ALLOW_SQLITE_MASTER_INDEX - && sqlite3StrICmp(&pTab->zName[7],"master")!=0 -#endif - && sqlite3StrNICmp(&pTab->zName[7],"altertab_",9)!=0 - ){ + ){ sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName); goto exit_create_index; } #ifndef SQLITE_OMIT_VIEW - if( pTab->pSelect ){ + if( IsView(pTab) ){ sqlite3ErrorMsg(pParse, "views may not be indexed"); goto exit_create_index; } @@ -106970,10 +123409,10 @@ SQLITE_PRIVATE void sqlite3CreateIndex( /* ** Find the name of the index. Make sure there is not already another - ** index or table with the same name. + ** index or table with the same name. ** ** Exception: If we are reading the names of permanent indices from the - ** sqlite_master table (because some other process changed the schema) and + ** sqlite_schema table (because some other process changed the schema) and ** one of the index names collides with the name of a temporary table or ** index, then we will continue to process this index. ** @@ -106985,24 +123424,27 @@ SQLITE_PRIVATE void sqlite3CreateIndex( zName = sqlite3NameFromToken(db, pName); if( zName==0 ) goto exit_create_index; assert( pName->z!=0 ); - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ + if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName,"index",pTab->zName) ){ goto exit_create_index; } - if( !db->init.busy ){ - if( sqlite3FindTable(db, zName, 0)!=0 ){ - sqlite3ErrorMsg(pParse, "there is already a table named %s", zName); + if( !IN_RENAME_OBJECT ){ + if( !db->init.busy ){ + if( sqlite3FindTable(db, zName, pDb->zDbSName)!=0 ){ + sqlite3ErrorMsg(pParse, "there is already a table named %s", zName); + goto exit_create_index; + } + } + if( sqlite3FindIndex(db, zName, pDb->zDbSName)!=0 ){ + if( !ifNotExist ){ + sqlite3ErrorMsg(pParse, "index %s already exists", zName); + }else{ + assert( !db->init.busy ); + sqlite3CodeVerifySchema(pParse, iDb); + sqlite3ForceNotReadOnly(pParse); + } goto exit_create_index; } } - if( sqlite3FindIndex(db, zName, pDb->zDbSName)!=0 ){ - if( !ifNotExist ){ - sqlite3ErrorMsg(pParse, "index %s already exists", zName); - }else{ - assert( !db->init.busy ); - sqlite3CodeVerifySchema(pParse, iDb); - } - goto exit_create_index; - } }else{ int n; Index *pLoop; @@ -107017,13 +123459,13 @@ SQLITE_PRIVATE void sqlite3CreateIndex( ** The following statement converts "sqlite3_autoindex..." into ** "sqlite3_butoindex..." in order to make the names distinct. ** The "vtab_err.test" test demonstrates the need of this statement. */ - if( IN_DECLARE_VTAB ) zName[7]++; + if( IN_SPECIAL_PARSE ) zName[7]++; } /* Check for authorization to create an index. */ #ifndef SQLITE_OMIT_AUTHORIZATION - { + if( !IN_RENAME_OBJECT ){ const char *zDb = pDb->zDbSName; if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iDb), 0, zDb) ){ goto exit_create_index; @@ -107044,14 +123486,15 @@ SQLITE_PRIVATE void sqlite3CreateIndex( Token prevCol; Column *pCol = &pTab->aCol[pTab->nCol-1]; pCol->colFlags |= COLFLAG_UNIQUE; - sqlite3TokenInit(&prevCol, pCol->zName); + sqlite3TokenInit(&prevCol, pCol->zCnName); pList = sqlite3ExprListAppend(pParse, 0, sqlite3ExprAlloc(db, TK_ID, &prevCol, 0)); if( pList==0 ) goto exit_create_index; assert( pList->nExpr==1 ); - sqlite3ExprListSetSortOrder(pList, sortOrder); + sqlite3ExprListSetSortOrder(pList, sortOrder, SQLITE_SO_UNDEFINED); }else{ sqlite3ExprListCheckLength(pParse, pList, "index"); + if( pParse->nErr ) goto exit_create_index; } /* Figure out how many bytes of space are required to store explicitly @@ -107061,15 +123504,17 @@ SQLITE_PRIVATE void sqlite3CreateIndex( Expr *pExpr = pList->a[i].pExpr; assert( pExpr!=0 ); if( pExpr->op==TK_COLLATE ){ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); nExtra += (1 + sqlite3Strlen30(pExpr->u.zToken)); } } - /* - ** Allocate the index structure. + /* + ** Allocate the index structure. */ nName = sqlite3Strlen30(zName); nExtraCol = pPk ? pPk->nKeyCol : 1; + assert( pList->nExpr + nExtraCol <= 32767 /* Fits in i16 */ ); pIndex = sqlite3AllocateIndexObject(db, pList->nExpr + nExtraCol, nName + nExtra + 1, &zExtra); if( db->mallocFailed ){ @@ -107110,7 +123555,12 @@ SQLITE_PRIVATE void sqlite3CreateIndex( ** TODO: Issue a warning if the table primary key is used as part of the ** index key. */ - for(i=0, pListItem=pList->a; inExpr; i++, pListItem++){ + pListItem = pList->a; + if( IN_RENAME_OBJECT ){ + pIndex->aColExpr = pList; + pList = 0; + } + for(i=0; inKeyCol; i++, pListItem++){ Expr *pCExpr; /* The i-th index expression */ int requestedSortOrder; /* ASC or DESC on the i-th expression */ const char *zColl; /* Collation sequence name */ @@ -107126,29 +123576,33 @@ SQLITE_PRIVATE void sqlite3CreateIndex( goto exit_create_index; } if( pIndex->aColExpr==0 ){ - ExprList *pCopy = sqlite3ExprListDup(db, pList, 0); - pIndex->aColExpr = pCopy; - if( !db->mallocFailed ){ - assert( pCopy!=0 ); - pListItem = &pCopy->a[i]; - } + pIndex->aColExpr = pList; + pList = 0; } j = XN_EXPR; pIndex->aiColumn[i] = XN_EXPR; pIndex->uniqNotNull = 0; + pIndex->bHasExpr = 1; }else{ j = pCExpr->iColumn; assert( j<=0x7fff ); if( j<0 ){ j = pTab->iPKey; - }else if( pTab->aCol[j].notNull==0 ){ - pIndex->uniqNotNull = 0; + }else{ + if( pTab->aCol[j].notNull==0 ){ + pIndex->uniqNotNull = 0; + } + if( pTab->aCol[j].colFlags & COLFLAG_VIRTUAL ){ + pIndex->bHasVCol = 1; + pIndex->bHasExpr = 1; + } } pIndex->aiColumn[i] = (i16)j; } zColl = 0; if( pListItem->pExpr->op==TK_COLLATE ){ int nColl; + assert( !ExprHasProperty(pListItem->pExpr, EP_IntValue) ); zColl = pListItem->pExpr->u.zToken; nColl = sqlite3Strlen30(zColl) + 1; assert( nExtra>=nColl ); @@ -107157,14 +123611,14 @@ SQLITE_PRIVATE void sqlite3CreateIndex( zExtra += nColl; nExtra -= nColl; }else if( j>=0 ){ - zColl = pTab->aCol[j].zColl; + zColl = sqlite3ColumnColl(&pTab->aCol[j]); } if( !zColl ) zColl = sqlite3StrBINARY; if( !db->init.busy && !sqlite3LocateCollSeq(pParse, zColl) ){ goto exit_create_index; } pIndex->azColl[i] = zColl; - requestedSortOrder = pListItem->sortOrder & sortOrderMask; + requestedSortOrder = pListItem->fg.sortFlags & sortOrderMask; pIndex->aSortOrder[i] = (u8)requestedSortOrder; } @@ -107176,9 +123630,10 @@ SQLITE_PRIVATE void sqlite3CreateIndex( for(j=0; jnKeyCol; j++){ int x = pPk->aiColumn[j]; assert( x>=0 ); - if( hasColumn(pIndex->aiColumn, pIndex->nKeyCol, x) ){ - pIndex->nColumn--; + if( isDupColumn(pIndex, pIndex->nKeyCol, pPk, j) ){ + pIndex->nColumn--; }else{ + testcase( hasColumn(pIndex->aiColumn,pIndex->nKeyCol,x) ); pIndex->aiColumn[i] = x; pIndex->azColl[i] = pPk->azColl[j]; pIndex->aSortOrder[i] = pPk->aSortOrder[j]; @@ -107195,13 +123650,14 @@ SQLITE_PRIVATE void sqlite3CreateIndex( /* If this index contains every column of its table, then mark ** it as a covering index */ - assert( HasRowid(pTab) - || pTab->iPKey<0 || sqlite3ColumnOfIndex(pIndex, pTab->iPKey)>=0 ); + assert( HasRowid(pTab) + || pTab->iPKey<0 || sqlite3TableColumnToIndex(pIndex, pTab->iPKey)>=0 ); + recomputeColumnsNotIndexed(pIndex); if( pTblName!=0 && pIndex->nColumn>=pTab->nCol ){ pIndex->isCovering = 1; for(j=0; jnCol; j++){ if( j==pTab->iPKey ) continue; - if( sqlite3ColumnOfIndex(pIndex,j)>=0 ) continue; + if( sqlite3TableColumnToIndex(pIndex,j)>=0 ) continue; pIndex->isCovering = 0; break; } @@ -107250,13 +123706,13 @@ SQLITE_PRIVATE void sqlite3CreateIndex( if( pIdx->onError!=pIndex->onError ){ /* This constraint creates the same index as a previous ** constraint specified somewhere in the CREATE TABLE statement. - ** However the ON CONFLICT clauses are different. If both this + ** However the ON CONFLICT clauses are different. If both this ** constraint and the previous equivalent constraint have explicit ** ON CONFLICT clauses this is an error. Otherwise, use the ** explicitly specified behavior for the index. */ if( !(pIdx->onError==OE_Default || pIndex->onError==OE_Default) ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "conflicting ON CONFLICT clauses specified", 0); } if( pIdx->onError==OE_Default ){ @@ -107264,130 +123720,161 @@ SQLITE_PRIVATE void sqlite3CreateIndex( } } if( idxType==SQLITE_IDXTYPE_PRIMARYKEY ) pIdx->idxType = idxType; + if( IN_RENAME_OBJECT ){ + pIndex->pNext = pParse->pNewIndex; + pParse->pNewIndex = pIndex; + pIndex = 0; + } goto exit_create_index; } } } - /* Link the new Index structure to its table and to the other - ** in-memory database structures. - */ - assert( pParse->nErr==0 ); - if( db->init.busy ){ - Index *p; - assert( !IN_DECLARE_VTAB ); - assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); - p = sqlite3HashInsert(&pIndex->pSchema->idxHash, - pIndex->zName, pIndex); - if( p ){ - assert( p==pIndex ); /* Malloc must have failed */ - sqlite3OomFault(db); - goto exit_create_index; - } - db->mDbFlags |= DBFLAG_SchemaChange; - if( pTblName!=0 ){ - pIndex->tnum = db->init.newTnum; - } - } + if( !IN_RENAME_OBJECT ){ - /* If this is the initial CREATE INDEX statement (or CREATE TABLE if the - ** index is an implied index for a UNIQUE or PRIMARY KEY constraint) then - ** emit code to allocate the index rootpage on disk and make an entry for - ** the index in the sqlite_master table and populate the index with - ** content. But, do not do this if we are simply reading the sqlite_master - ** table to parse the schema, or if this index is the PRIMARY KEY index - ** of a WITHOUT ROWID table. - ** - ** If pTblName==0 it means this index is generated as an implied PRIMARY KEY - ** or UNIQUE index in a CREATE TABLE statement. Since the table - ** has just been created, it contains no data and the index initialization - ** step can be skipped. - */ - else if( HasRowid(pTab) || pTblName!=0 ){ - Vdbe *v; - char *zStmt; - int iMem = ++pParse->nMem; - - v = sqlite3GetVdbe(pParse); - if( v==0 ) goto exit_create_index; - - sqlite3BeginWriteOperation(pParse, 1, iDb); - - /* Create the rootpage for the index using CreateIndex. But before - ** doing so, code a Noop instruction and store its address in - ** Index.tnum. This is required in case this index is actually a - ** PRIMARY KEY and the table is actually a WITHOUT ROWID table. In - ** that case the convertToWithoutRowidTable() routine will replace - ** the Noop with a Goto to jump over the VDBE code generated below. */ - pIndex->tnum = sqlite3VdbeAddOp0(v, OP_Noop); - sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, iMem, BTREE_BLOBKEY); - - /* Gather the complete text of the CREATE INDEX statement into - ** the zStmt variable + /* Link the new Index structure to its table and to the other + ** in-memory database structures. */ - if( pStart ){ - int n = (int)(pParse->sLastToken.z - pName->z) + pParse->sLastToken.n; - if( pName->z[n-1]==';' ) n--; - /* A named index with an explicit CREATE INDEX statement */ - zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s", - onError==OE_None ? "" : " UNIQUE", n, pName->z); - }else{ - /* An automatic index created by a PRIMARY KEY or UNIQUE constraint */ - /* zStmt = sqlite3MPrintf(""); */ - zStmt = 0; - } - - /* Add an entry in sqlite_master for this index - */ - sqlite3NestedParse(pParse, - "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);", - db->aDb[iDb].zDbSName, MASTER_NAME, - pIndex->zName, - pTab->zName, - iMem, - zStmt - ); - sqlite3DbFree(db, zStmt); - - /* Fill the index with data and reparse the schema. Code an OP_Expire - ** to invalidate all pre-compiled statements. - */ - if( pTblName ){ - sqlite3RefillIndex(pParse, pIndex, iMem); - sqlite3ChangeCookie(pParse, iDb); - sqlite3VdbeAddParseSchemaOp(v, iDb, - sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName)); - sqlite3VdbeAddOp0(v, OP_Expire); - } - - sqlite3VdbeJumpHere(v, pIndex->tnum); - } - - /* When adding an index to the list of indices for a table, make - ** sure all indices labeled OE_Replace come after all those labeled - ** OE_Ignore. This is necessary for the correct constraint check - ** processing (in sqlite3GenerateConstraintChecks()) as part of - ** UPDATE and INSERT statements. - */ - if( db->init.busy || pTblName==0 ){ - if( onError!=OE_Replace || pTab->pIndex==0 - || pTab->pIndex->onError==OE_Replace){ - pIndex->pNext = pTab->pIndex; - pTab->pIndex = pIndex; - }else{ - Index *pOther = pTab->pIndex; - while( pOther->pNext && pOther->pNext->onError!=OE_Replace ){ - pOther = pOther->pNext; + assert( pParse->nErr==0 ); + if( db->init.busy ){ + Index *p; + assert( !IN_SPECIAL_PARSE ); + assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); + if( pTblName!=0 ){ + pIndex->tnum = db->init.newTnum; + if( sqlite3IndexHasDuplicateRootPage(pIndex) ){ + sqlite3ErrorMsg(pParse, "invalid rootpage"); + pParse->rc = SQLITE_CORRUPT_BKPT; + goto exit_create_index; + } } - pIndex->pNext = pOther->pNext; - pOther->pNext = pIndex; + p = sqlite3HashInsert(&pIndex->pSchema->idxHash, + pIndex->zName, pIndex); + if( p ){ + assert( p==pIndex ); /* Malloc must have failed */ + sqlite3OomFault(db); + goto exit_create_index; + } + db->mDbFlags |= DBFLAG_SchemaChange; } + + /* If this is the initial CREATE INDEX statement (or CREATE TABLE if the + ** index is an implied index for a UNIQUE or PRIMARY KEY constraint) then + ** emit code to allocate the index rootpage on disk and make an entry for + ** the index in the sqlite_schema table and populate the index with + ** content. But, do not do this if we are simply reading the sqlite_schema + ** table to parse the schema, or if this index is the PRIMARY KEY index + ** of a WITHOUT ROWID table. + ** + ** If pTblName==0 it means this index is generated as an implied PRIMARY KEY + ** or UNIQUE index in a CREATE TABLE statement. Since the table + ** has just been created, it contains no data and the index initialization + ** step can be skipped. + */ + else if( HasRowid(pTab) || pTblName!=0 ){ + Vdbe *v; + char *zStmt; + int iMem = ++pParse->nMem; + + v = sqlite3GetVdbe(pParse); + if( v==0 ) goto exit_create_index; + + sqlite3BeginWriteOperation(pParse, 1, iDb); + + /* Create the rootpage for the index using CreateIndex. But before + ** doing so, code a Noop instruction and store its address in + ** Index.tnum. This is required in case this index is actually a + ** PRIMARY KEY and the table is actually a WITHOUT ROWID table. In + ** that case the convertToWithoutRowidTable() routine will replace + ** the Noop with a Goto to jump over the VDBE code generated below. */ + pIndex->tnum = (Pgno)sqlite3VdbeAddOp0(v, OP_Noop); + sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, iMem, BTREE_BLOBKEY); + + /* Gather the complete text of the CREATE INDEX statement into + ** the zStmt variable + */ + assert( pName!=0 || pStart==0 ); + if( pStart ){ + int n = (int)(pParse->sLastToken.z - pName->z) + pParse->sLastToken.n; + if( pName->z[n-1]==';' ) n--; + /* A named index with an explicit CREATE INDEX statement */ + zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s", + onError==OE_None ? "" : " UNIQUE", n, pName->z); + }else{ + /* An automatic index created by a PRIMARY KEY or UNIQUE constraint */ + /* zStmt = sqlite3MPrintf(""); */ + zStmt = 0; + } + + /* Add an entry in sqlite_schema for this index + */ + sqlite3NestedParse(pParse, + "INSERT INTO %Q." LEGACY_SCHEMA_TABLE " VALUES('index',%Q,%Q,#%d,%Q);", + db->aDb[iDb].zDbSName, + pIndex->zName, + pTab->zName, + iMem, + zStmt + ); + sqlite3DbFree(db, zStmt); + + /* Fill the index with data and reparse the schema. Code an OP_Expire + ** to invalidate all pre-compiled statements. + */ + if( pTblName ){ + sqlite3RefillIndex(pParse, pIndex, iMem); + sqlite3ChangeCookie(pParse, iDb); + sqlite3VdbeAddParseSchemaOp(v, iDb, + sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName), 0); + sqlite3VdbeAddOp2(v, OP_Expire, 0, 1); + } + + sqlite3VdbeJumpHere(v, (int)pIndex->tnum); + } + } + if( db->init.busy || pTblName==0 ){ + pIndex->pNext = pTab->pIndex; + pTab->pIndex = pIndex; + pIndex = 0; + } + else if( IN_RENAME_OBJECT ){ + assert( pParse->pNewIndex==0 ); + pParse->pNewIndex = pIndex; pIndex = 0; } /* Clean up before exiting */ exit_create_index: - if( pIndex ) freeIndex(db, pIndex); + if( pIndex ) sqlite3FreeIndex(db, pIndex); + if( pTab ){ + /* Ensure all REPLACE indexes on pTab are at the end of the pIndex list. + ** The list was already ordered when this routine was entered, so at this + ** point at most a single index (the newly added index) will be out of + ** order. So we have to reorder at most one index. */ + Index **ppFrom; + Index *pThis; + for(ppFrom=&pTab->pIndex; (pThis = *ppFrom)!=0; ppFrom=&pThis->pNext){ + Index *pNext; + if( pThis->onError!=OE_Replace ) continue; + while( (pNext = pThis->pNext)!=0 && pNext->onError!=OE_Replace ){ + *ppFrom = pNext; + pThis->pNext = pNext->pNext; + pNext->pNext = pThis; + ppFrom = &pNext->pNext; + } + break; + } +#ifdef SQLITE_DEBUG + /* Verify that all REPLACE indexes really are now at the end + ** of the index list. In other words, no other index type ever + ** comes after a REPLACE index on the list. */ + for(pThis = pTab->pIndex; pThis; pThis=pThis->pNext){ + assert( pThis->onError!=OE_Replace + || pThis->pNext==0 + || pThis->pNext->onError==OE_Replace ); + } +#endif + } sqlite3ExprDelete(db, pPIWhere); sqlite3ExprListDelete(db, pList); sqlite3SrcListDelete(db, pTblName); @@ -107413,21 +123900,33 @@ exit_create_index: ** are based on typical values found in actual indices. */ SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){ - /* 10, 9, 8, 7, 6 */ - LogEst aVal[] = { 33, 32, 30, 28, 26 }; + /* 10, 9, 8, 7, 6 */ + static const LogEst aVal[] = { 33, 32, 30, 28, 26 }; LogEst *a = pIdx->aiRowLogEst; + LogEst x; int nCopy = MIN(ArraySize(aVal), pIdx->nKeyCol); int i; /* Indexes with default row estimates should not have stat1 data */ assert( !pIdx->hasStat1 ); - /* Set the first entry (number of rows in the index) to the estimated + /* Set the first entry (number of rows in the index) to the estimated ** number of rows in the table, or half the number of rows in the table - ** for a partial index. But do not let the estimate drop below 10. */ - a[0] = pIdx->pTable->nRowLogEst; - if( pIdx->pPartIdxWhere!=0 ) a[0] -= 10; assert( 10==sqlite3LogEst(2) ); - if( a[0]<33 ) a[0] = 33; assert( 33==sqlite3LogEst(10) ); + ** for a partial index. + ** + ** 2020-05-27: If some of the stat data is coming from the sqlite_stat1 + ** table but other parts we are having to guess at, then do not let the + ** estimated number of rows in the table be less than 1000 (LogEst 99). + ** Failure to do this can cause the indexes for which we do not have + ** stat1 data to be ignored by the query planner. + */ + x = pIdx->pTable->nRowLogEst; + assert( 99==sqlite3LogEst(1000) ); + if( x<99 ){ + pIdx->pTable->nRowLogEst = x = 99; + } + if( pIdx->pPartIdxWhere!=0 ){ x -= 10; assert( 10==sqlite3LogEst(2) ); } + a[0] = x; /* Estimate that a[1] is 10, a[2] is 9, a[3] is 8, a[4] is 7, a[5] is ** 6 and each subsequent value (if any) is 5. */ @@ -107450,10 +123949,10 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists sqlite3 *db = pParse->db; int iDb; - assert( pParse->nErr==0 ); /* Never called with prior errors */ if( db->mallocFailed ){ goto exit_drop_index; } + assert( pParse->nErr==0 ); /* Never called with prior non-OOM errors */ assert( pName->nSrc==1 ); if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ goto exit_drop_index; @@ -107461,9 +123960,10 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists pIndex = sqlite3FindIndex(db, pName->a[0].zName, pName->a[0].zDatabase); if( pIndex==0 ){ if( !ifExists ){ - sqlite3ErrorMsg(pParse, "no such index: %S", pName, 0); + sqlite3ErrorMsg(pParse, "no such index: %S", pName->a); }else{ sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase); + sqlite3ForceNotReadOnly(pParse); } pParse->checkSchema = 1; goto exit_drop_index; @@ -107483,20 +123983,20 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){ goto exit_drop_index; } - if( !OMIT_TEMPDB && iDb ) code = SQLITE_DROP_TEMP_INDEX; + if( !OMIT_TEMPDB && iDb==1 ) code = SQLITE_DROP_TEMP_INDEX; if( sqlite3AuthCheck(pParse, code, pIndex->zName, pTab->zName, zDb) ){ goto exit_drop_index; } } #endif - /* Generate code to remove the index and from the master table */ + /* Generate code to remove the index and from the schema table */ v = sqlite3GetVdbe(pParse); if( v ){ sqlite3BeginWriteOperation(pParse, 1, iDb); sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE name=%Q AND type='index'", - db->aDb[iDb].zDbSName, MASTER_NAME, pIndex->zName + "DELETE FROM %Q." LEGACY_SCHEMA_TABLE " WHERE name=%Q AND type='index'", + db->aDb[iDb].zDbSName, pIndex->zName ); sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName); sqlite3ChangeCookie(pParse, iDb); @@ -107533,9 +124033,9 @@ SQLITE_PRIVATE void *sqlite3ArrayAllocate( int *pIdx /* Write the index of a new slot here */ ){ char *z; - int n = *pnEntry; + sqlite3_int64 n = *pIdx = *pnEntry; if( (n & (n-1))==0 ){ - int sz = (n==0) ? 1 : 2*n; + sqlite3_int64 sz = (n==0) ? 1 : 2*n; void *pNew = sqlite3DbRealloc(db, pArray, sz*szEntry); if( pNew==0 ){ *pIdx = -1; @@ -107545,7 +124045,6 @@ SQLITE_PRIVATE void *sqlite3ArrayAllocate( } z = (char*)pArray; memset(&z[n * szEntry], 0, szEntry); - *pIdx = n; ++*pnEntry; return pArray; } @@ -107556,24 +124055,27 @@ SQLITE_PRIVATE void *sqlite3ArrayAllocate( ** ** A new IdList is returned, or NULL if malloc() fails. */ -SQLITE_PRIVATE IdList *sqlite3IdListAppend(sqlite3 *db, IdList *pList, Token *pToken){ +SQLITE_PRIVATE IdList *sqlite3IdListAppend(Parse *pParse, IdList *pList, Token *pToken){ + sqlite3 *db = pParse->db; int i; if( pList==0 ){ pList = sqlite3DbMallocZero(db, sizeof(IdList) ); if( pList==0 ) return 0; + }else{ + IdList *pNew; + pNew = sqlite3DbRealloc(db, pList, + sizeof(IdList) + pList->nId*sizeof(pList->a)); + if( pNew==0 ){ + sqlite3IdListDelete(db, pList); + return 0; + } + pList = pNew; } - pList->a = sqlite3ArrayAllocate( - db, - pList->a, - sizeof(pList->a[0]), - &pList->nId, - &i - ); - if( i<0 ){ - sqlite3IdListDelete(db, pList); - return 0; - } + i = pList->nId++; pList->a[i].zName = sqlite3NameFromToken(db, pToken); + if( IN_RENAME_OBJECT && pList->a[i].zName ){ + sqlite3RenameTokenMap(pParse, (void*)pList->a[i].zName, pToken); + } return pList; } @@ -107582,12 +124084,13 @@ SQLITE_PRIVATE IdList *sqlite3IdListAppend(sqlite3 *db, IdList *pList, Token *pT */ SQLITE_PRIVATE void sqlite3IdListDelete(sqlite3 *db, IdList *pList){ int i; + assert( db!=0 ); if( pList==0 ) return; + assert( pList->eU4!=EU4_EXPR ); /* EU4_EXPR mode is not currently used */ for(i=0; inId; i++){ sqlite3DbFree(db, pList->a[i].zName); } - sqlite3DbFree(db, pList->a); - sqlite3DbFreeNN(db, pList); + sqlite3DbNNFreeNN(db, pList); } /* @@ -107596,13 +124099,25 @@ SQLITE_PRIVATE void sqlite3IdListDelete(sqlite3 *db, IdList *pList){ */ SQLITE_PRIVATE int sqlite3IdListIndex(IdList *pList, const char *zName){ int i; - if( pList==0 ) return -1; + assert( pList!=0 ); for(i=0; inId; i++){ if( sqlite3StrICmp(pList->a[i].zName, zName)==0 ) return i; } return -1; } +/* +** Maximum size of a SrcList object. +** The SrcList object is used to represent the FROM clause of a +** SELECT statement, and the query planner cannot deal with more +** than 64 tables in a join. So any value larger than 64 here +** is sufficient for most uses. Smaller values, like say 10, are +** appropriate for small and memory-limited applications. +*/ +#ifndef SQLITE_MAX_SRCLIST +# define SQLITE_MAX_SRCLIST 200 +#endif + /* ** Expand the space allocated for the given SrcList object by ** creating nExtra new slots beginning at iStart. iStart is zero based. @@ -107619,11 +124134,12 @@ SQLITE_PRIVATE int sqlite3IdListIndex(IdList *pList, const char *zName){ ** the iStart value would be 0. The result then would ** be: nil, nil, nil, A, B. ** -** If a memory allocation fails the SrcList is unchanged. The -** db->mallocFailed flag will be set to true. +** If a memory allocation fails or the SrcList becomes too large, leave +** the original SrcList unchanged, return NULL, and leave an error message +** in pParse. */ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( - sqlite3 *db, /* Database connection to notify of OOM errors */ + Parse *pParse, /* Parsing context into which errors are reported */ SrcList *pSrc, /* The SrcList to be enlarged */ int nExtra, /* Number of new slots to add to pSrc->a[] */ int iStart /* Index in pSrc->a[] of first new slot */ @@ -107639,17 +124155,23 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( /* Allocate additional space if needed */ if( (u32)pSrc->nSrc+nExtra>pSrc->nAlloc ){ SrcList *pNew; - int nAlloc = pSrc->nSrc*2+nExtra; - int nGot; + sqlite3_int64 nAlloc = 2*(sqlite3_int64)pSrc->nSrc+nExtra; + sqlite3 *db = pParse->db; + + if( pSrc->nSrc+nExtra>=SQLITE_MAX_SRCLIST ){ + sqlite3ErrorMsg(pParse, "too many FROM clause terms, max: %d", + SQLITE_MAX_SRCLIST); + return 0; + } + if( nAlloc>SQLITE_MAX_SRCLIST ) nAlloc = SQLITE_MAX_SRCLIST; pNew = sqlite3DbRealloc(db, pSrc, sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) ); if( pNew==0 ){ assert( db->mallocFailed ); - return pSrc; + return 0; } pSrc = pNew; - nGot = (sqlite3DbMallocSize(db, pNew) - sizeof(*pSrc))/sizeof(pSrc->a[0])+1; - pSrc->nAlloc = nGot; + pSrc->nAlloc = nAlloc; } /* Move existing slots that come after the newly inserted slots @@ -107674,7 +124196,8 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( ** Append a new table name to the given SrcList. Create a new SrcList if ** need be. A new entry is created in the SrcList even if pTable is NULL. ** -** A SrcList is returned, or NULL if there is an OOM error. The returned +** A SrcList is returned, or NULL if there is an OOM error or if the +** SrcList grows to large. The returned ** SrcList might be the same as the SrcList that was input or it might be ** a new one. If an OOM error does occurs, then the prior value of pList ** that is input to this routine is automatically freed. @@ -107683,7 +124206,7 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( ** database name prefix. Like this: "database.table". The pDatabase ** points to the table name and the pTable points to the database name. ** The SrcList.a[].zName field is filled with the table name which might -** come from pTable (if pDatabase is NULL) or from pDatabase. +** come from pTable (if pDatabase is NULL) or from pDatabase. ** SrcList.a[].zDatabase is filled with the database name from pTable, ** or with NULL if no database is specified. ** @@ -107705,27 +124228,32 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( ** before being added to the SrcList. */ SQLITE_PRIVATE SrcList *sqlite3SrcListAppend( - sqlite3 *db, /* Connection to notify of malloc failures */ + Parse *pParse, /* Parsing context, in which errors are reported */ SrcList *pList, /* Append to this SrcList. NULL creates a new SrcList */ Token *pTable, /* Table to append */ Token *pDatabase /* Database of the table */ ){ - struct SrcList_item *pItem; + SrcItem *pItem; + sqlite3 *db; assert( pDatabase==0 || pTable!=0 ); /* Cannot have C without B */ - assert( db!=0 ); + assert( pParse!=0 ); + assert( pParse->db!=0 ); + db = pParse->db; if( pList==0 ){ - pList = sqlite3DbMallocRawNN(db, sizeof(SrcList) ); + pList = sqlite3DbMallocRawNN(pParse->db, sizeof(SrcList) ); if( pList==0 ) return 0; pList->nAlloc = 1; pList->nSrc = 1; memset(&pList->a[0], 0, sizeof(pList->a[0])); pList->a[0].iCursor = -1; }else{ - pList = sqlite3SrcListEnlarge(db, pList, 1, pList->nSrc); - } - if( db->mallocFailed ){ - sqlite3SrcListDelete(db, pList); - return 0; + SrcList *pNew = sqlite3SrcListEnlarge(pParse, pList, 1, pList->nSrc); + if( pNew==0 ){ + sqlite3SrcListDelete(db, pList); + return 0; + }else{ + pList = pNew; + } } pItem = &pList->a[pList->nSrc-1]; if( pDatabase && pDatabase->z==0 ){ @@ -107746,11 +124274,11 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListAppend( */ SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse *pParse, SrcList *pList){ int i; - struct SrcList_item *pItem; - assert(pList || pParse->db->mallocFailed ); - if( pList ){ + SrcItem *pItem; + assert( pList || pParse->db->mallocFailed ); + if( ALWAYS(pList) ){ for(i=0, pItem=pList->a; inSrc; i++, pItem++){ - if( pItem->iCursor>=0 ) break; + if( pItem->iCursor>=0 ) continue; pItem->iCursor = pParse->nTab++; if( pItem->pSelect ){ sqlite3SrcListAssignCursors(pParse, pItem->pSelect->pSrc); @@ -107764,20 +124292,24 @@ SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse *pParse, SrcList *pList){ */ SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3 *db, SrcList *pList){ int i; - struct SrcList_item *pItem; + SrcItem *pItem; + assert( db!=0 ); if( pList==0 ) return; for(pItem=pList->a, i=0; inSrc; i++, pItem++){ - sqlite3DbFree(db, pItem->zDatabase); - sqlite3DbFree(db, pItem->zName); - sqlite3DbFree(db, pItem->zAlias); + if( pItem->zDatabase ) sqlite3DbNNFreeNN(db, pItem->zDatabase); + if( pItem->zName ) sqlite3DbNNFreeNN(db, pItem->zName); + if( pItem->zAlias ) sqlite3DbNNFreeNN(db, pItem->zAlias); if( pItem->fg.isIndexedBy ) sqlite3DbFree(db, pItem->u1.zIndexedBy); if( pItem->fg.isTabFunc ) sqlite3ExprListDelete(db, pItem->u1.pFuncArg); sqlite3DeleteTable(db, pItem->pTab); - sqlite3SelectDelete(db, pItem->pSelect); - sqlite3ExprDelete(db, pItem->pOn); - sqlite3IdListDelete(db, pItem->pUsing); + if( pItem->pSelect ) sqlite3SelectDelete(db, pItem->pSelect); + if( pItem->fg.isUsing ){ + sqlite3IdListDelete(db, pItem->u3.pUsing); + }else if( pItem->u3.pOn ){ + sqlite3ExprDelete(db, pItem->u3.pOn); + } } - sqlite3DbFreeNN(db, pList); + sqlite3DbNNFreeNN(db, pList); } /* @@ -107803,71 +124335,110 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm( Token *pDatabase, /* Name of the database containing pTable */ Token *pAlias, /* The right-hand side of the AS subexpression */ Select *pSubquery, /* A subquery used in place of a table name */ - Expr *pOn, /* The ON clause of a join */ - IdList *pUsing /* The USING clause of a join */ + OnOrUsing *pOnUsing /* Either the ON clause or the USING clause */ ){ - struct SrcList_item *pItem; + SrcItem *pItem; sqlite3 *db = pParse->db; - if( !p && (pOn || pUsing) ){ - sqlite3ErrorMsg(pParse, "a JOIN clause is required before %s", - (pOn ? "ON" : "USING") + if( !p && pOnUsing!=0 && (pOnUsing->pOn || pOnUsing->pUsing) ){ + sqlite3ErrorMsg(pParse, "a JOIN clause is required before %s", + (pOnUsing->pOn ? "ON" : "USING") ); goto append_from_error; } - p = sqlite3SrcListAppend(db, p, pTable, pDatabase); + p = sqlite3SrcListAppend(pParse, p, pTable, pDatabase); if( p==0 ){ goto append_from_error; } assert( p->nSrc>0 ); pItem = &p->a[p->nSrc-1]; + assert( (pTable==0)==(pDatabase==0) ); + assert( pItem->zName==0 || pDatabase!=0 ); + if( IN_RENAME_OBJECT && pItem->zName ){ + Token *pToken = (ALWAYS(pDatabase) && pDatabase->z) ? pDatabase : pTable; + sqlite3RenameTokenMap(pParse, pItem->zName, pToken); + } assert( pAlias!=0 ); if( pAlias->n ){ pItem->zAlias = sqlite3NameFromToken(db, pAlias); } - pItem->pSelect = pSubquery; - pItem->pOn = pOn; - pItem->pUsing = pUsing; + if( pSubquery ){ + pItem->pSelect = pSubquery; + if( pSubquery->selFlags & SF_NestedFrom ){ + pItem->fg.isNestedFrom = 1; + } + } + assert( pOnUsing==0 || pOnUsing->pOn==0 || pOnUsing->pUsing==0 ); + assert( pItem->fg.isUsing==0 ); + if( pOnUsing==0 ){ + pItem->u3.pOn = 0; + }else if( pOnUsing->pUsing ){ + pItem->fg.isUsing = 1; + pItem->u3.pUsing = pOnUsing->pUsing; + }else{ + pItem->u3.pOn = pOnUsing->pOn; + } return p; - append_from_error: +append_from_error: assert( p==0 ); - sqlite3ExprDelete(db, pOn); - sqlite3IdListDelete(db, pUsing); + sqlite3ClearOnOrUsing(db, pOnUsing); sqlite3SelectDelete(db, pSubquery); return 0; } /* -** Add an INDEXED BY or NOT INDEXED clause to the most recently added +** Add an INDEXED BY or NOT INDEXED clause to the most recently added ** element of the source-list passed as the second argument. */ SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pIndexedBy){ assert( pIndexedBy!=0 ); if( p && pIndexedBy->n>0 ){ - struct SrcList_item *pItem; + SrcItem *pItem; assert( p->nSrc>0 ); pItem = &p->a[p->nSrc-1]; assert( pItem->fg.notIndexed==0 ); assert( pItem->fg.isIndexedBy==0 ); assert( pItem->fg.isTabFunc==0 ); if( pIndexedBy->n==1 && !pIndexedBy->z ){ - /* A "NOT INDEXED" clause was supplied. See parse.y + /* A "NOT INDEXED" clause was supplied. See parse.y ** construct "indexed_opt" for details. */ pItem->fg.notIndexed = 1; }else{ pItem->u1.zIndexedBy = sqlite3NameFromToken(pParse->db, pIndexedBy); pItem->fg.isIndexedBy = 1; + assert( pItem->fg.isCte==0 ); /* No collision on union u2 */ } } } +/* +** Append the contents of SrcList p2 to SrcList p1 and return the resulting +** SrcList. Or, if an error occurs, return NULL. In all cases, p1 and p2 +** are deleted by this function. +*/ +SQLITE_PRIVATE SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2){ + assert( p1 && p1->nSrc==1 ); + if( p2 ){ + SrcList *pNew = sqlite3SrcListEnlarge(pParse, p1, p2->nSrc, 1); + if( pNew==0 ){ + sqlite3SrcListDelete(pParse->db, p2); + }else{ + p1 = pNew; + memcpy(&p1->a[1], p2->a, p2->nSrc*sizeof(SrcItem)); + sqlite3DbFree(pParse->db, p2); + p1->a[0].fg.jointype |= (JT_LTORJ & p1->a[1].fg.jointype); + } + } + return p1; +} + /* ** Add the list of function arguments to the SrcList entry for a ** table-valued-function. */ SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse *pParse, SrcList *p, ExprList *pList){ if( p ){ - struct SrcList_item *pItem = &p->a[p->nSrc-1]; + SrcItem *pItem = &p->a[p->nSrc-1]; assert( pItem->fg.notIndexed==0 ); assert( pItem->fg.isIndexedBy==0 ); assert( pItem->fg.isTabFunc==0 ); @@ -107892,14 +124463,34 @@ SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse *pParse, SrcList *p, ExprList * ** The operator is "natural cross join". The A and B operands are stored ** in p->a[0] and p->a[1], respectively. The parser initially stores the ** operator with A. This routine shifts that operator over to B. +** +** Additional changes: +** +** * All tables to the left of the right-most RIGHT JOIN are tagged with +** JT_LTORJ (mnemonic: Left Table Of Right Join) so that the +** code generator can easily tell that the table is part of +** the left operand of at least one RIGHT JOIN. */ -SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList *p){ - if( p ){ - int i; - for(i=p->nSrc-1; i>0; i--){ - p->a[i].fg.jointype = p->a[i-1].fg.jointype; - } +SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(Parse *pParse, SrcList *p){ + (void)pParse; + if( p && p->nSrc>1 ){ + int i = p->nSrc-1; + u8 allFlags = 0; + do{ + allFlags |= p->a[i].fg.jointype = p->a[i-1].fg.jointype; + }while( (--i)>0 ); p->a[0].fg.jointype = 0; + + /* All terms to the left of a RIGHT JOIN should be tagged with the + ** JT_LTORJ flags */ + if( allFlags & JT_RIGHT ){ + for(i=p->nSrc-1; ALWAYS(i>0) && (p->a[i].fg.jointype&JT_RIGHT)==0; i--){} + i--; + assert( i>=0 ); + do{ + p->a[i].fg.jointype |= JT_LTORJ; + }while( (--i)>=0 ); + } } } @@ -107921,7 +124512,16 @@ SQLITE_PRIVATE void sqlite3BeginTransaction(Parse *pParse, int type){ if( !v ) return; if( type!=TK_DEFERRED ){ for(i=0; inDb; i++){ - sqlite3VdbeAddOp2(v, OP_Transaction, i, (type==TK_EXCLUSIVE)+1); + int eTxnType; + Btree *pBt = db->aDb[i].pBt; + if( pBt && sqlite3BtreeIsReadonly(pBt) ){ + eTxnType = 0; /* Read txn */ + }else if( type==TK_EXCLUSIVE ){ + eTxnType = 2; /* Exclusive txn */ + }else{ + eTxnType = 1; /* Write txn */ + } + sqlite3VdbeAddOp2(v, OP_Transaction, i, eTxnType); sqlite3VdbeUsesBtree(v, i); } } @@ -107941,7 +124541,7 @@ SQLITE_PRIVATE void sqlite3EndTransaction(Parse *pParse, int eType){ assert( pParse->db!=0 ); assert( eType==TK_COMMIT || eType==TK_END || eType==TK_ROLLBACK ); isRollback = eType==TK_ROLLBACK; - if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, + if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, isRollback ? "ROLLBACK" : "COMMIT", 0, 0) ){ return; } @@ -107953,7 +124553,7 @@ SQLITE_PRIVATE void sqlite3EndTransaction(Parse *pParse, int eType){ /* ** This function is called by the parser when it parses a command to create, -** release or rollback an SQL savepoint. +** release or rollback an SQL savepoint. */ SQLITE_PRIVATE void sqlite3Savepoint(Parse *pParse, int op, Token *pName){ char *zName = sqlite3NameFromToken(pParse->db, pName); @@ -107980,7 +124580,7 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){ if( db->aDb[1].pBt==0 && !pParse->explain ){ int rc; Btree *pBt; - static const int flags = + static const int flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE | @@ -107996,7 +124596,7 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){ } db->aDb[1].pBt = pBt; assert( db->aDb[1].pSchema ); - if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){ + if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, 0, 0) ){ sqlite3OomFault(db); return 1; } @@ -108010,13 +124610,11 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){ ** will occur at the end of the top-level VDBE and will be generated ** later, by sqlite3FinishCoding(). */ -SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse *pParse, int iDb){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - - assert( iDb>=0 && iDbdb->nDb ); - assert( pParse->db->aDb[iDb].pBt!=0 || iDb==1 ); - assert( iDbdb, iDb, 0) ); +static void sqlite3CodeVerifySchemaAtToplevel(Parse *pToplevel, int iDb){ + assert( iDb>=0 && iDbdb->nDb ); + assert( pToplevel->db->aDb[iDb].pBt!=0 || iDb==1 ); + assert( iDbdb, iDb, 0) ); if( DbMaskTest(pToplevel->cookieMask, iDb)==0 ){ DbMaskSet(pToplevel->cookieMask, iDb); if( !OMIT_TEMPDB && iDb==1 ){ @@ -108024,9 +124622,13 @@ SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse *pParse, int iDb){ } } } +SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse *pParse, int iDb){ + sqlite3CodeVerifySchemaAtToplevel(sqlite3ParseToplevel(pParse), iDb); +} + /* -** If argument zDb is NULL, then call sqlite3CodeVerifySchema() for each +** If argument zDb is NULL, then call sqlite3CodeVerifySchema() for each ** attached database. Otherwise, invoke it for the database named zDb only. */ SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb){ @@ -108055,7 +124657,7 @@ SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb) */ SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse *pParse, int setStatement, int iDb){ Parse *pToplevel = sqlite3ParseToplevel(pParse); - sqlite3CodeVerifySchema(pParse, iDb); + sqlite3CodeVerifySchemaAtToplevel(pToplevel, iDb); DbMaskSet(pToplevel->writeMask, iDb); pToplevel->isMultiWrite |= setStatement; } @@ -108072,9 +124674,9 @@ SQLITE_PRIVATE void sqlite3MultiWrite(Parse *pParse){ pToplevel->isMultiWrite = 1; } -/* +/* ** The code generator calls this routine if is discovers that it is -** possible to abort a statement prior to completion. In order to +** possible to abort a statement prior to completion. In order to ** perform this abort without corrupting the database, we need to make ** sure that the statement is protected by a statement transaction. ** @@ -108083,7 +124685,7 @@ SQLITE_PRIVATE void sqlite3MultiWrite(Parse *pParse){ ** such that the abort must occur after the multiwrite. This makes ** some statements involving the REPLACE conflict resolution algorithm ** go a little faster. But taking advantage of this time dependency -** makes it more difficult to prove that the code is correct (in +** makes it more difficult to prove that the code is correct (in ** particular, it prevents us from writing an effective ** implementation of sqlite3AssertMayAbort()) and so we have chosen ** to take the safe route and skip the optimization. @@ -108106,8 +124708,10 @@ SQLITE_PRIVATE void sqlite3HaltConstraint( i8 p4type, /* P4_STATIC or P4_TRANSIENT */ u8 p5Errmsg /* P5_ErrMsg type */ ){ - Vdbe *v = sqlite3GetVdbe(pParse); - assert( (errCode&0xff)==SQLITE_CONSTRAINT ); + Vdbe *v; + assert( pParse->pVdbe!=0 ); + v = sqlite3GetVdbe(pParse); + assert( (errCode&0xff)==SQLITE_CONSTRAINT || pParse->nested ); if( onError==OE_Abort ){ sqlite3MayAbort(pParse); } @@ -108128,14 +124732,15 @@ SQLITE_PRIVATE void sqlite3UniqueConstraint( StrAccum errMsg; Table *pTab = pIdx->pTable; - sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, 200); + sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, + pParse->db->aLimit[SQLITE_LIMIT_LENGTH]); if( pIdx->aColExpr ){ sqlite3_str_appendf(&errMsg, "index '%q'", pIdx->zName); }else{ for(j=0; jnKeyCol; j++){ char *zCol; assert( pIdx->aiColumn[j]>=0 ); - zCol = pTab->aCol[pIdx->aiColumn[j]].zName; + zCol = pTab->aCol[pIdx->aiColumn[j]].zCnName; if( j ) sqlite3_str_append(&errMsg, ", ", 2); sqlite3_str_appendall(&errMsg, pTab->zName); sqlite3_str_append(&errMsg, ".", 1); @@ -108143,8 +124748,8 @@ SQLITE_PRIVATE void sqlite3UniqueConstraint( } } zErr = sqlite3StrAccumFinish(&errMsg); - sqlite3HaltConstraint(pParse, - IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY + sqlite3HaltConstraint(pParse, + IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY : SQLITE_CONSTRAINT_UNIQUE, onError, zErr, P4_DYNAMIC, P5_ConstraintUnique); } @@ -108156,13 +124761,13 @@ SQLITE_PRIVATE void sqlite3UniqueConstraint( SQLITE_PRIVATE void sqlite3RowidConstraint( Parse *pParse, /* Parsing context */ int onError, /* Conflict resolution algorithm */ - Table *pTab /* The table with the non-unique rowid */ + Table *pTab /* The table with the non-unique rowid */ ){ char *zMsg; int rc; if( pTab->iPKey>=0 ){ zMsg = sqlite3MPrintf(pParse->db, "%s.%s", pTab->zName, - pTab->aCol[pTab->iPKey].zName); + pTab->aCol[pTab->iPKey].zCnName); rc = SQLITE_CONSTRAINT_PRIMARYKEY; }else{ zMsg = sqlite3MPrintf(pParse->db, "%s.rowid", pTab->zName); @@ -108197,13 +124802,15 @@ static int collationMatch(const char *zColl, Index *pIndex){ */ #ifndef SQLITE_OMIT_REINDEX static void reindexTable(Parse *pParse, Table *pTab, char const *zColl){ - Index *pIndex; /* An index associated with pTab */ + if( !IsVirtual(pTab) ){ + Index *pIndex; /* An index associated with pTab */ - for(pIndex=pTab->pIndex; pIndex; pIndex=pIndex->pNext){ - if( zColl==0 || collationMatch(zColl, pIndex) ){ - int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3RefillIndex(pParse, pIndex, -1); + for(pIndex=pTab->pIndex; pIndex; pIndex=pIndex->pNext){ + if( zColl==0 || collationMatch(zColl, pIndex) ){ + int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); + sqlite3BeginWriteOperation(pParse, 0, iDb); + sqlite3RefillIndex(pParse, pIndex, -1); + } } } } @@ -108324,7 +124931,8 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse *pParse, Index *pIdx){ const char *zColl = pIdx->azColl[i]; pKey->aColl[i] = zColl==sqlite3StrBINARY ? 0 : sqlite3LocateCollSeq(pParse, zColl); - pKey->aSortOrder[i] = pIdx->aSortOrder[i]; + pKey->aSortFlags[i] = pIdx->aSortOrder[i]; + assert( 0==(pKey->aSortFlags[i] & KEYINFO_ORDER_BIGNULL) ); } if( pParse->nErr ){ assert( pParse->rc==SQLITE_ERROR_MISSING_COLLSEQ ); @@ -108347,24 +124955,76 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse *pParse, Index *pIdx){ } #ifndef SQLITE_OMIT_CTE -/* -** This routine is invoked once per CTE by the parser while parsing a -** WITH clause. +/* +** Create a new CTE object +*/ +SQLITE_PRIVATE Cte *sqlite3CteNew( + Parse *pParse, /* Parsing context */ + Token *pName, /* Name of the common-table */ + ExprList *pArglist, /* Optional column name list for the table */ + Select *pQuery, /* Query used to initialize the table */ + u8 eM10d /* The MATERIALIZED flag */ +){ + Cte *pNew; + sqlite3 *db = pParse->db; + + pNew = sqlite3DbMallocZero(db, sizeof(*pNew)); + assert( pNew!=0 || db->mallocFailed ); + + if( db->mallocFailed ){ + sqlite3ExprListDelete(db, pArglist); + sqlite3SelectDelete(db, pQuery); + }else{ + pNew->pSelect = pQuery; + pNew->pCols = pArglist; + pNew->zName = sqlite3NameFromToken(pParse->db, pName); + pNew->eM10d = eM10d; + } + return pNew; +} + +/* +** Clear information from a Cte object, but do not deallocate storage +** for the object itself. +*/ +static void cteClear(sqlite3 *db, Cte *pCte){ + assert( pCte!=0 ); + sqlite3ExprListDelete(db, pCte->pCols); + sqlite3SelectDelete(db, pCte->pSelect); + sqlite3DbFree(db, pCte->zName); +} + +/* +** Free the contents of the CTE object passed as the second argument. +*/ +SQLITE_PRIVATE void sqlite3CteDelete(sqlite3 *db, Cte *pCte){ + assert( pCte!=0 ); + cteClear(db, pCte); + sqlite3DbFree(db, pCte); +} + +/* +** This routine is invoked once per CTE by the parser while parsing a +** WITH clause. The CTE described by the third argument is added to +** the WITH clause of the second argument. If the second argument is +** NULL, then a new WITH argument is created. */ SQLITE_PRIVATE With *sqlite3WithAdd( Parse *pParse, /* Parsing context */ With *pWith, /* Existing WITH clause, or NULL */ - Token *pName, /* Name of the common-table */ - ExprList *pArglist, /* Optional column name list for the table */ - Select *pQuery /* Query used to initialize the table */ + Cte *pCte /* CTE to add to the WITH clause */ ){ sqlite3 *db = pParse->db; With *pNew; char *zName; + if( pCte==0 ){ + return pWith; + } + /* Check that the CTE name is unique within this WITH clause. If ** not, store an error in the Parse structure. */ - zName = sqlite3NameFromToken(pParse->db, pName); + zName = pCte->zName; if( zName && pWith ){ int i; for(i=0; inCte; i++){ @@ -108375,7 +125035,7 @@ SQLITE_PRIVATE With *sqlite3WithAdd( } if( pWith ){ - int nByte = sizeof(*pWith) + (sizeof(pWith->a[1]) * pWith->nCte); + sqlite3_int64 nByte = sizeof(*pWith) + (sizeof(pWith->a[1]) * pWith->nCte); pNew = sqlite3DbRealloc(db, pWith, nByte); }else{ pNew = sqlite3DbMallocZero(db, sizeof(*pWith)); @@ -108383,16 +125043,11 @@ SQLITE_PRIVATE With *sqlite3WithAdd( assert( (pNew!=0 && zName!=0) || db->mallocFailed ); if( db->mallocFailed ){ - sqlite3ExprListDelete(db, pArglist); - sqlite3SelectDelete(db, pQuery); - sqlite3DbFree(db, zName); + sqlite3CteDelete(db, pCte); pNew = pWith; }else{ - pNew->a[pNew->nCte].pSelect = pQuery; - pNew->a[pNew->nCte].pCols = pArglist; - pNew->a[pNew->nCte].zName = zName; - pNew->a[pNew->nCte].zCteErr = 0; - pNew->nCte++; + pNew->a[pNew->nCte++] = *pCte; + sqlite3DbFree(db, pCte); } return pNew; @@ -108405,10 +125060,7 @@ SQLITE_PRIVATE void sqlite3WithDelete(sqlite3 *db, With *pWith){ if( pWith ){ int i; for(i=0; inCte; i++){ - struct Cte *pCte = &pWith->a[i]; - sqlite3ExprListDelete(db, pCte->pCols); - sqlite3SelectDelete(db, pCte->pSelect); - sqlite3DbFree(db, pCte->zName); + cteClear(db, &pWith->a[i]); } sqlite3DbFree(db, pWith); } @@ -108418,7 +125070,7 @@ SQLITE_PRIVATE void sqlite3WithDelete(sqlite3 *db, With *pWith){ /************** End of build.c ***********************************************/ /************** Begin file callback.c ****************************************/ /* -** 2005 May 23 +** 2005 May 23 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -108484,51 +125136,6 @@ static int synthCollSeq(sqlite3 *db, CollSeq *pColl){ return SQLITE_ERROR; } -/* -** This function is responsible for invoking the collation factory callback -** or substituting a collation sequence of a different encoding when the -** requested collation sequence is not available in the desired encoding. -** -** If it is not NULL, then pColl must point to the database native encoding -** collation sequence with name zName, length nName. -** -** The return value is either the collation sequence to be used in database -** db for collation type name zName, length nName, or NULL, if no collation -** sequence can be found. If no collation is found, leave an error message. -** -** See also: sqlite3LocateCollSeq(), sqlite3FindCollSeq() -*/ -SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq( - Parse *pParse, /* Parsing context */ - u8 enc, /* The desired encoding for the collating sequence */ - CollSeq *pColl, /* Collating sequence with native encoding, or NULL */ - const char *zName /* Collating sequence name */ -){ - CollSeq *p; - sqlite3 *db = pParse->db; - - p = pColl; - if( !p ){ - p = sqlite3FindCollSeq(db, enc, zName, 0); - } - if( !p || !p->xCmp ){ - /* No collation sequence of this type for this encoding is registered. - ** Call the collation factory to see if it can supply us with one. - */ - callCollNeeded(db, enc, zName); - p = sqlite3FindCollSeq(db, enc, zName, 0); - } - if( p && !p->xCmp && synthCollSeq(db, p) ){ - p = 0; - } - assert( !p || p->xCmp ); - if( p==0 ){ - sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName); - pParse->rc = SQLITE_ERROR_MISSING_COLLSEQ; - } - return p; -} - /* ** This routine is called on a collation sequence before it is used to ** check that it is defined. An undefined collation sequence exists when @@ -108536,7 +125143,7 @@ SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq( ** that have not been defined by sqlite3_create_collation() etc. ** ** If required, this routine calls the 'collation needed' callback to -** request a definition of the collating sequence. If this doesn't work, +** request a definition of the collating sequence. If this doesn't work, ** an equivalent collating sequence that uses a text encoding different ** from the main database is substituted, if one is available. */ @@ -108590,7 +125197,7 @@ static CollSeq *findCollSeqEntry( memcpy(pColl[0].zName, zName, nName); pDel = sqlite3HashInsert(&db->aCollSeq, pColl[0].zName, pColl); - /* If a malloc() failure occurred in sqlite3HashInsert(), it will + /* If a malloc() failure occurred in sqlite3HashInsert(), it will ** return the pColl pointer to be deleted (because it wasn't added ** to the hash table). */ @@ -108621,20 +125228,113 @@ static CollSeq *findCollSeqEntry( ** See also: sqlite3LocateCollSeq(), sqlite3GetCollSeq() */ SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq( - sqlite3 *db, - u8 enc, - const char *zName, - int create + sqlite3 *db, /* Database connection to search */ + u8 enc, /* Desired text encoding */ + const char *zName, /* Name of the collating sequence. Might be NULL */ + int create /* True to create CollSeq if doesn't already exist */ ){ CollSeq *pColl; + assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); + assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE ); if( zName ){ pColl = findCollSeqEntry(db, zName, create); + if( pColl ) pColl += enc-1; }else{ pColl = db->pDfltColl; } - assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); - assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE ); - if( pColl ) pColl += enc-1; + return pColl; +} + +/* +** Change the text encoding for a database connection. This means that +** the pDfltColl must change as well. +*/ +SQLITE_PRIVATE void sqlite3SetTextEncoding(sqlite3 *db, u8 enc){ + assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE ); + db->enc = enc; + /* EVIDENCE-OF: R-08308-17224 The default collating function for all + ** strings is BINARY. + */ + db->pDfltColl = sqlite3FindCollSeq(db, enc, sqlite3StrBINARY, 0); + sqlite3ExpirePreparedStatements(db, 1); +} + +/* +** This function is responsible for invoking the collation factory callback +** or substituting a collation sequence of a different encoding when the +** requested collation sequence is not available in the desired encoding. +** +** If it is not NULL, then pColl must point to the database native encoding +** collation sequence with name zName, length nName. +** +** The return value is either the collation sequence to be used in database +** db for collation type name zName, length nName, or NULL, if no collation +** sequence can be found. If no collation is found, leave an error message. +** +** See also: sqlite3LocateCollSeq(), sqlite3FindCollSeq() +*/ +SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq( + Parse *pParse, /* Parsing context */ + u8 enc, /* The desired encoding for the collating sequence */ + CollSeq *pColl, /* Collating sequence with native encoding, or NULL */ + const char *zName /* Collating sequence name */ +){ + CollSeq *p; + sqlite3 *db = pParse->db; + + p = pColl; + if( !p ){ + p = sqlite3FindCollSeq(db, enc, zName, 0); + } + if( !p || !p->xCmp ){ + /* No collation sequence of this type for this encoding is registered. + ** Call the collation factory to see if it can supply us with one. + */ + callCollNeeded(db, enc, zName); + p = sqlite3FindCollSeq(db, enc, zName, 0); + } + if( p && !p->xCmp && synthCollSeq(db, p) ){ + p = 0; + } + assert( !p || p->xCmp ); + if( p==0 ){ + sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName); + pParse->rc = SQLITE_ERROR_MISSING_COLLSEQ; + } + return p; +} + +/* +** This function returns the collation sequence for database native text +** encoding identified by the string zName. +** +** If the requested collation sequence is not available, or not available +** in the database native encoding, the collation factory is invoked to +** request it. If the collation factory does not supply such a sequence, +** and the sequence is available in another text encoding, then that is +** returned instead. +** +** If no versions of the requested collations sequence are available, or +** another error occurs, NULL is returned and an error message written into +** pParse. +** +** This routine is a wrapper around sqlite3FindCollSeq(). This routine +** invokes the collation factory if the named collation cannot be found +** and generates an error message. +** +** See also: sqlite3FindCollSeq(), sqlite3GetCollSeq() +*/ +SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){ + sqlite3 *db = pParse->db; + u8 enc = ENC(db); + u8 initbusy = db->init.busy; + CollSeq *pColl; + + pColl = sqlite3FindCollSeq(db, enc, zName, initbusy); + if( !initbusy && (!pColl || !pColl->xCmp) ){ + pColl = sqlite3GetCollSeq(pParse, enc, pColl, zName); + } + return pColl; } @@ -108648,7 +125348,7 @@ SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq( ** is also -1. In other words, we are searching for a function that ** takes a variable number of arguments. ** -** If nArg is -2 that means that we are searching for any function +** If nArg is -2 that means that we are searching for any function ** regardless of the number of arguments it uses, so return a positive ** match score for any ** @@ -108673,12 +125373,13 @@ static int matchQuality( u8 enc /* Desired text encoding */ ){ int match; - - /* nArg of -2 is a special case */ - if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH; + assert( p->nArg>=-1 ); /* Wrong number of arguments means "no match" */ - if( p->nArg!=nArg && p->nArg>=0 ) return 0; + if( p->nArg!=nArg ){ + if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH; + if( p->nArg>=0 ) return 0; + } /* Give a better score to a function with a specific number of arguments ** than to function that accepts any number of arguments. */ @@ -108702,12 +125403,13 @@ static int matchQuality( ** Search a FuncDefHash for a function with the given name. Return ** a pointer to the matching FuncDef if found, or 0 if there is no match. */ -static FuncDef *functionSearch( +SQLITE_PRIVATE FuncDef *sqlite3FunctionSearch( int h, /* Hash of the name */ const char *zFunc /* Name of function */ ){ FuncDef *p; for(p=sqlite3BuiltinFunctions.a[h]; p; p=p->u.pHash){ + assert( p->funcFlags & SQLITE_FUNC_BUILTIN ); if( sqlite3StrICmp(p->zName, zFunc)==0 ){ return p; } @@ -108727,9 +125429,9 @@ SQLITE_PRIVATE void sqlite3InsertBuiltinFuncs( FuncDef *pOther; const char *zName = aDef[i].zName; int nName = sqlite3Strlen30(zName); - int h = (zName[0] + nName) % SQLITE_FUNC_HASH_SZ; - assert( zName[0]>='a' && zName[0]<='z' ); - pOther = functionSearch(h, zName); + int h = SQLITE_FUNC_HASH(zName[0], nName); + assert( aDef[i].funcFlags & SQLITE_FUNC_BUILTIN ); + pOther = sqlite3FunctionSearch(h, zName); if( pOther ){ assert( pOther!=&aDef[i] && pOther->pNext!=&aDef[i] ); aDef[i].pNext = pOther->pNext; @@ -108741,8 +125443,8 @@ SQLITE_PRIVATE void sqlite3InsertBuiltinFuncs( } } } - - + + /* ** Locate a user function given a name, a number of arguments and a flag @@ -108803,11 +125505,11 @@ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( ** have fields overwritten with new information appropriate for the ** new function. But the FuncDefs for built-in functions are read-only. ** So we must not search for built-ins when creating a new function. - */ + */ if( !createFlag && (pBest==0 || (db->mDbFlags & DBFLAG_PreferBuiltin)!=0) ){ bestScore = 0; - h = (sqlite3UpperToLower[(u8)zName[0]] + nName) % SQLITE_FUNC_HASH_SZ; - p = functionSearch(h, zName); + h = SQLITE_FUNC_HASH(sqlite3UpperToLower[(u8)zName[0]], nName); + p = sqlite3FunctionSearch(h, zName); while( p ){ int score = matchQuality(p, nArg, enc); if( score>bestScore ){ @@ -108822,7 +125524,7 @@ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( ** exact match for the name, number of arguments and encoding, then add a ** new entry to the hash table and return it. */ - if( createFlag && bestScoretblHash; temp2 = pSchema->trigHash; sqlite3HashInit(&pSchema->trigHash); sqlite3HashClear(&pSchema->idxHash); for(pElem=sqliteHashFirst(&temp2); pElem; pElem=sqliteHashNext(pElem)){ - sqlite3DeleteTrigger(0, (Trigger*)sqliteHashData(pElem)); + sqlite3DeleteTrigger(&xdb, (Trigger*)sqliteHashData(pElem)); } sqlite3HashClear(&temp2); sqlite3HashInit(&pSchema->tblHash); for(pElem=sqliteHashFirst(&temp1); pElem; pElem=sqliteHashNext(pElem)){ Table *pTab = sqliteHashData(pElem); - sqlite3DeleteTable(0, pTab); + sqlite3DeleteTable(&xdb, pTab); } sqlite3HashClear(&temp1); sqlite3HashClear(&pSchema->fkeyHash); @@ -108929,7 +125633,7 @@ SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){ ** (as in the FROM clause of a SELECT statement) in this case it contains ** the name of a single table, as one might find in an INSERT, DELETE, ** or UPDATE statement. Look up that table in the symbol table and -** return a pointer. Set an error message and return NULL if the table +** return a pointer. Set an error message and return NULL if the table ** name is not found or if any other error occurs. ** ** The following fields are initialized appropriate in pSrc: @@ -108939,49 +125643,101 @@ SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){ ** */ SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){ - struct SrcList_item *pItem = pSrc->a; + SrcItem *pItem = pSrc->a; Table *pTab; - assert( pItem && pSrc->nSrc==1 ); + assert( pItem && pSrc->nSrc>=1 ); pTab = sqlite3LocateTableItem(pParse, 0, pItem); - sqlite3DeleteTable(pParse->db, pItem->pTab); + if( pItem->pTab ) sqlite3DeleteTable(pParse->db, pItem->pTab); pItem->pTab = pTab; + pItem->fg.notCte = 1; if( pTab ){ pTab->nTabRef++; - } - if( sqlite3IndexedByLookup(pParse, pItem) ){ - pTab = 0; + if( pItem->fg.isIndexedBy && sqlite3IndexedByLookup(pParse, pItem) ){ + pTab = 0; + } } return pTab; } -/* -** Check to make sure the given table is writable. If it is not -** writable, generate an error message and return 1. If it is -** writable return 0; +/* Generate byte-code that will report the number of rows modified +** by a DELETE, INSERT, or UPDATE statement. */ -SQLITE_PRIVATE int sqlite3IsReadOnly(Parse *pParse, Table *pTab, int viewOk){ - /* A table is not writable under the following circumstances: - ** - ** 1) It is a virtual table and no implementation of the xUpdate method - ** has been provided, or - ** 2) It is a system table (i.e. sqlite_master), this call is not - ** part of a nested parse and writable_schema pragma has not - ** been specified. - ** - ** In either case leave an error message in pParse and return non-zero. - */ - if( ( IsVirtual(pTab) - && sqlite3GetVTable(pParse->db, pTab)->pMod->pModule->xUpdate==0 ) - || ( (pTab->tabFlags & TF_Readonly)!=0 - && (pParse->db->flags & SQLITE_WriteSchema)==0 - && pParse->nested==0 ) - ){ - sqlite3ErrorMsg(pParse, "table %s may not be modified", pTab->zName); +SQLITE_PRIVATE void sqlite3CodeChangeCount(Vdbe *v, int regCounter, const char *zColName){ + sqlite3VdbeAddOp0(v, OP_FkCheck); + sqlite3VdbeAddOp2(v, OP_ResultRow, regCounter, 1); + sqlite3VdbeSetNumCols(v, 1); + sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zColName, SQLITE_STATIC); +} + +/* Return true if table pTab is read-only. +** +** A table is read-only if any of the following are true: +** +** 1) It is a virtual table and no implementation of the xUpdate method +** has been provided +** +** 2) A trigger is currently being coded and the table is a virtual table +** that is SQLITE_VTAB_DIRECTONLY or if PRAGMA trusted_schema=OFF and +** the table is not SQLITE_VTAB_INNOCUOUS. +** +** 3) It is a system table (i.e. sqlite_schema), this call is not +** part of a nested parse and writable_schema pragma has not +** been specified +** +** 4) The table is a shadow table, the database connection is in +** defensive mode, and the current sqlite3_prepare() +** is for a top-level SQL statement. +*/ +static int vtabIsReadOnly(Parse *pParse, Table *pTab){ + if( sqlite3GetVTable(pParse->db, pTab)->pMod->pModule->xUpdate==0 ){ return 1; } + /* Within triggers: + ** * Do not allow DELETE, INSERT, or UPDATE of SQLITE_VTAB_DIRECTONLY + ** virtual tables + ** * Only allow DELETE, INSERT, or UPDATE of non-SQLITE_VTAB_INNOCUOUS + ** virtual tables if PRAGMA trusted_schema=ON. + */ + if( pParse->pToplevel!=0 + && pTab->u.vtab.p->eVtabRisk > + ((pParse->db->flags & SQLITE_TrustedSchema)!=0) + ){ + sqlite3ErrorMsg(pParse, "unsafe use of virtual table \"%s\"", + pTab->zName); + } + return 0; +} +static int tabIsReadOnly(Parse *pParse, Table *pTab){ + sqlite3 *db; + if( IsVirtual(pTab) ){ + return vtabIsReadOnly(pParse, pTab); + } + if( (pTab->tabFlags & (TF_Readonly|TF_Shadow))==0 ) return 0; + db = pParse->db; + if( (pTab->tabFlags & TF_Readonly)!=0 ){ + return sqlite3WritableSchema(db)==0 && pParse->nested==0; + } + assert( pTab->tabFlags & TF_Shadow ); + return sqlite3ReadOnlyShadowTables(db); +} + +/* +** Check to make sure the given table is writable. +** +** If pTab is not writable -> generate an error message and return 1. +** If pTab is writable but other errors have occurred -> return 1. +** If pTab is writable and no prior errors -> return 0; +*/ +SQLITE_PRIVATE int sqlite3IsReadOnly(Parse *pParse, Table *pTab, Trigger *pTrigger){ + if( tabIsReadOnly(pParse, pTab) ){ + sqlite3ErrorMsg(pParse, "table %s may not be modified", pTab->zName); + return 1; + } #ifndef SQLITE_OMIT_VIEW - if( !viewOk && pTab->pSelect ){ + if( IsView(pTab) + && (pTrigger==0 || (pTrigger->bReturning && pTrigger->pNext==0)) + ){ sqlite3ErrorMsg(pParse,"cannot modify %s because it is a view",pTab->zName); return 1; } @@ -109010,15 +125766,15 @@ SQLITE_PRIVATE void sqlite3MaterializeView( sqlite3 *db = pParse->db; int iDb = sqlite3SchemaToIndex(db, pView->pSchema); pWhere = sqlite3ExprDup(db, pWhere, 0); - pFrom = sqlite3SrcListAppend(db, 0, 0, 0); + pFrom = sqlite3SrcListAppend(pParse, 0, 0, 0); if( pFrom ){ assert( pFrom->nSrc==1 ); pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName); pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName); - assert( pFrom->a[0].pOn==0 ); - assert( pFrom->a[0].pUsing==0 ); + assert( pFrom->a[0].fg.isUsing==0 ); + assert( pFrom->a[0].u3.pOn==0 ); } - pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, pOrderBy, + pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, pOrderBy, SF_IncludeHidden, pLimit); sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur); sqlite3Select(pParse, pSel, &dest); @@ -109046,7 +125802,7 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( sqlite3 *db = pParse->db; Expr *pLhs = NULL; /* LHS of IN(SELECT...) operator */ Expr *pInClause = NULL; /* WHERE rowid IN ( select ) */ - ExprList *pEList = NULL; /* Expression list contaning only pSelectRowid */ + ExprList *pEList = NULL; /* Expression list containing only pSelectRowid*/ SrcList *pSelectSrc = NULL; /* SELECT rowid FROM x ... (dup of pSrc) */ Select *pSelect = NULL; /* Complete SELECT tree */ Table *pTab; @@ -109067,11 +125823,11 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( return pWhere; } - /* Generate a select expression tree to enforce the limit/offset + /* Generate a select expression tree to enforce the limit/offset ** term for the DELETE or UPDATE statement. For example: ** DELETE FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1 ** becomes: - ** DELETE FROM table_a WHERE rowid IN ( + ** DELETE FROM table_a WHERE rowid IN ( ** SELECT rowid FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1 ** ); */ @@ -109084,14 +125840,20 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( ); }else{ Index *pPk = sqlite3PrimaryKeyIndex(pTab); + assert( pPk!=0 ); + assert( pPk->nKeyCol>=1 ); if( pPk->nKeyCol==1 ){ - const char *zName = pTab->aCol[pPk->aiColumn[0]].zName; + const char *zName; + assert( pPk->aiColumn[0]>=0 && pPk->aiColumn[0]nCol ); + zName = pTab->aCol[pPk->aiColumn[0]].zCnName; pLhs = sqlite3Expr(db, TK_ID, zName); pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ID, zName)); }else{ int i; for(i=0; inKeyCol; i++){ - Expr *p = sqlite3Expr(db, TK_ID, pTab->aCol[pPk->aiColumn[i]].zName); + Expr *p; + assert( pPk->aiColumn[i]>=0 && pPk->aiColumn[i]nCol ); + p = sqlite3Expr(db, TK_ID, pTab->aCol[pPk->aiColumn[i]].zCnName); pEList = sqlite3ExprListAppend(pParse, pEList, p); } pLhs = sqlite3PExpr(pParse, TK_VECTOR, 0, 0); @@ -109104,16 +125866,23 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree ** and the SELECT subtree. */ pSrc->a[0].pTab = 0; - pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0); + pSelectSrc = sqlite3SrcListDup(db, pSrc, 0); pSrc->a[0].pTab = pTab; - pSrc->a[0].pIBIndex = 0; + if( pSrc->a[0].fg.isIndexedBy ){ + assert( pSrc->a[0].fg.isCte==0 ); + pSrc->a[0].u2.pIBIndex = 0; + pSrc->a[0].fg.isIndexedBy = 0; + sqlite3DbFree(db, pSrc->a[0].u1.zIndexedBy); + }else if( pSrc->a[0].fg.isCte ){ + pSrc->a[0].u2.pCteUse->nUse++; + } /* generate the SELECT expression tree. */ - pSelect = sqlite3SelectNew(pParse, pEList, pSelectSrc, pWhere, 0 ,0, + pSelect = sqlite3SelectNew(pParse, pEList, pSelectSrc, pWhere, 0 ,0, pOrderBy,0,pLimit ); - /* now generate the new WHERE rowid IN clause for the DELETE/UDPATE */ + /* now generate the new WHERE rowid IN clause for the DELETE/UPDATE */ pInClause = sqlite3PExpr(pParse, TK_IN, pLhs, 0); sqlite3PExprAddSelect(pParse, pInClause, pSelect); return pInClause; @@ -109165,7 +125934,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( int addrEphOpen = 0; /* Instruction to open the Ephemeral table */ int bComplex; /* True if there are triggers or FKs or ** subqueries in the WHERE clause */ - + #ifndef SQLITE_OMIT_TRIGGER int isView; /* True if attempting to delete from a view */ Trigger *pTrigger; /* List of table triggers, if required */ @@ -109173,12 +125942,13 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( memset(&sContext, 0, sizeof(sContext)); db = pParse->db; - if( pParse->nErr || db->mallocFailed ){ + assert( db->pParse==pParse ); + if( pParse->nErr ){ goto delete_from_cleanup; } + assert( db->mallocFailed==0 ); assert( pTabList->nSrc==1 ); - /* Locate the table which we want to delete. This table has to be ** put in an SrcList structure because some of the subroutines we ** will be calling are designed to work with multiple tables and expect @@ -109192,7 +125962,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( */ #ifndef SQLITE_OMIT_TRIGGER pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - isView = pTab->pSelect!=0; + isView = IsView(pTab); #else # define pTrigger 0 # define isView 0 @@ -109203,6 +125973,14 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( # define isView 0 #endif +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x10000 ){ + sqlite3TreeViewLine(0, "In sqlite3Delete() at %s:%d", __FILE__, __LINE__); + sqlite3TreeViewDelete(pParse->pWith, pTabList, pWhere, + pOrderBy, pLimit, pTrigger); + } +#endif + #ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT if( !isView ){ pWhere = sqlite3LimitWhere( @@ -109219,12 +125997,12 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( goto delete_from_cleanup; } - if( sqlite3IsReadOnly(pParse, pTab, (pTrigger?1:0)) ){ + if( sqlite3IsReadOnly(pParse, pTab, pTrigger) ){ goto delete_from_cleanup; } iDb = sqlite3SchemaToIndex(db, pTab->pSchema); assert( iDbnDb ); - rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, + rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, db->aDb[iDb].zDbSName); assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE ); if( rcauth==SQLITE_DENY ){ @@ -109260,7 +126038,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( */ #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) if( isView ){ - sqlite3MaterializeView(pParse, pTab, + sqlite3MaterializeView(pParse, pTab, pWhere, pOrderBy, pLimit, iTabCur ); iDataCur = iIdxCur = iTabCur; @@ -109284,6 +126062,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( if( (db->flags & SQLITE_CountRows)!=0 && !pParse->nested && !pParse->pTriggerTab + && !pParse->bReturning ){ memCnt = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Integer, 0, memCnt); @@ -109292,7 +126071,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( #ifndef SQLITE_OMIT_TRUNCATE_OPTIMIZATION /* Special case: A DELETE without a WHERE clause deletes everything. ** It is easier just to erase the whole table. Prior to version 3.6.5, - ** this optimization caused the row change count (the value returned by + ** this optimization caused the row change count (the value returned by ** API function sqlite3_count_changes) to be set incorrectly. ** ** The "rcauth==SQLITE_OK" terms is the @@ -109317,18 +126096,22 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( } for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ assert( pIdx->pSchema==pTab->pSchema ); - sqlite3VdbeAddOp2(v, OP_Clear, pIdx->tnum, iDb); + if( IsPrimaryKeyIndex(pIdx) && !HasRowid(pTab) ){ + sqlite3VdbeAddOp3(v, OP_Clear, pIdx->tnum, iDb, memCnt ? memCnt : -1); + }else{ + sqlite3VdbeAddOp2(v, OP_Clear, pIdx->tnum, iDb); + } } }else #endif /* SQLITE_OMIT_TRUNCATE_OPTIMIZATION */ { - u16 wcf = WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK|WHERE_SEEK_TABLE; - if( sNC.ncFlags & NC_VarSelect ) bComplex = 1; + u16 wcf = WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK; + if( sNC.ncFlags & NC_Subquery ) bComplex = 1; wcf |= (bComplex ? 0 : WHERE_ONEPASS_MULTIROW); if( HasRowid(pTab) ){ /* For a rowid table, initialize the RowSet to an empty set */ pPk = 0; - nPk = 1; + assert( nPk==1 ); iRowSet = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Null, 0, iRowSet); }else{ @@ -109343,7 +126126,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( addrEphOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEphCur, nPk); sqlite3VdbeSetP4KeyInfo(pParse, pPk); } - + /* Construct a query to find the rowid or primary key for every row ** to be deleted, based on the WHERE clause. Set variable eOnePass ** to indicate the strategy used to implement this delete: @@ -109352,18 +126135,22 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( ** ONEPASS_SINGLE: One-pass approach - at most one row deleted. ** ONEPASS_MULTI: One-pass approach - any number of rows may be deleted. */ - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, wcf, iTabCur+1); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0,0,wcf,iTabCur+1); if( pWInfo==0 ) goto delete_from_cleanup; eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); assert( IsVirtual(pTab)==0 || eOnePass!=ONEPASS_MULTI ); - assert( IsVirtual(pTab) || bComplex || eOnePass!=ONEPASS_OFF ); + assert( IsVirtual(pTab) || bComplex || eOnePass!=ONEPASS_OFF + || OptimizationDisabled(db, SQLITE_OnePass) ); if( eOnePass!=ONEPASS_SINGLE ) sqlite3MultiWrite(pParse); - + if( sqlite3WhereUsesDeferredSeek(pWInfo) ){ + sqlite3VdbeAddOp1(v, OP_FinishSeek, iTabCur); + } + /* Keep track of the number of rows to be deleted */ if( memCnt ){ sqlite3VdbeAddOp2(v, OP_AddImm, memCnt, 1); } - + /* Extract the rowid or primary key for the current row */ if( pPk ){ for(i=0; inMem + 1; - iKey = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iTabCur, iKey, 0); - if( iKey>pParse->nMem ) pParse->nMem = iKey; + iKey = ++pParse->nMem; + sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, -1, iKey); } - + if( eOnePass!=ONEPASS_OFF ){ /* For ONEPASS, no need to store the rowid/primary-key. There is only ** one, so just keep it in its register(s) and fall through to the @@ -109393,6 +126179,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iTabCur] = 0; if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iTabCur] = 0; if( addrEphOpen ) sqlite3VdbeChangeToNoop(v, addrEphOpen); + addrBypass = sqlite3VdbeMakeLabel(pParse); }else{ if( pPk ){ /* Add the PK key for this row to the temporary table */ @@ -109406,19 +126193,12 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( nKey = 1; /* OP_DeferredSeek always uses a single rowid */ sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, iKey); } - } - - /* If this DELETE cannot use the ONEPASS strategy, this is the - ** end of the WHERE loop */ - if( eOnePass!=ONEPASS_OFF ){ - addrBypass = sqlite3VdbeMakeLabel(v); - }else{ sqlite3WhereEnd(pWInfo); } - - /* Unless this is a view, open cursors for the table we are + + /* Unless this is a view, open cursors for the table we are ** deleting from and all its indices. If this is a view, then the - ** only effect this statement has is to fire the INSTEAD OF + ** only effect this statement has is to fire the INSTEAD OF ** triggers. */ if( !isView ){ @@ -109431,16 +126211,18 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( iTabCur, aToOpen, &iDataCur, &iIdxCur); assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur ); assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 ); - if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce); + if( eOnePass==ONEPASS_MULTI ){ + sqlite3VdbeJumpHereOrPopInst(v, iAddrOnce); + } } - + /* Set up a loop over the rowids/primary-keys that were found in the ** where-clause loop above. */ if( eOnePass!=ONEPASS_OFF ){ assert( nKey==nPk ); /* OP_Found will use an unpacked key */ if( !IsVirtual(pTab) && aToOpen[iDataCur-iTabCur] ){ - assert( pPk!=0 || pTab->pSelect!=0 ); + assert( pPk!=0 || IsView(pTab) ); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, addrBypass, iKey, nKey); VdbeCoverage(v); } @@ -109456,8 +126238,8 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( addrLoop = sqlite3VdbeAddOp3(v, OP_RowSetRead, iRowSet, 0, iKey); VdbeCoverage(v); assert( nKey==1 ); - } - + } + /* Delete the row */ #ifndef SQLITE_OMIT_VIRTUALTABLE if( IsVirtual(pTab) ){ @@ -109480,7 +126262,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, iKey, nKey, count, OE_Default, eOnePass, aiCurOnePass[1]); } - + /* End of the loop over all rowids/primary-keys. */ if( eOnePass!=ONEPASS_OFF ){ sqlite3VdbeResolveLabel(v, addrBypass); @@ -109491,7 +126273,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( }else{ sqlite3VdbeGoto(v, addrLoop); sqlite3VdbeJumpHere(v, addrLoop); - } + } } /* End non-truncate path */ /* Update the sqlite_sequence table by storing the content of the @@ -109502,25 +126284,23 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( sqlite3AutoincrementEnd(pParse); } - /* Return the number of rows that were deleted. If this routine is + /* Return the number of rows that were deleted. If this routine is ** generating code because of a call to sqlite3NestedParse(), do not ** invoke the callback function. */ if( memCnt ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, memCnt, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", SQLITE_STATIC); + sqlite3CodeChangeCount(v, memCnt, "rows deleted"); } delete_from_cleanup: sqlite3AuthContextPop(&sContext); sqlite3SrcListDelete(db, pTabList); sqlite3ExprDelete(db, pWhere); -#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) +#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) sqlite3ExprListDelete(db, pOrderBy); sqlite3ExprDelete(db, pLimit); #endif - sqlite3DbFree(db, aToOpen); + if( aToOpen ) sqlite3DbNNFreeNN(db, aToOpen); return; } /* Make sure "isView" and other macros defined above are undefined. Otherwise @@ -109561,7 +126341,7 @@ delete_from_cleanup: ** and nPk before reading from it. ** ** If eMode is ONEPASS_MULTI, then this call is being made as part -** of a ONEPASS delete that affects multiple rows. In this case, if +** of a ONEPASS delete that affects multiple rows. In this case, if ** iIdxNoSeek is a valid cursor number (>=0) and is not the same as ** iDataCur, then its position should be preserved following the delete ** operation. Or, if iIdxNoSeek is not a valid cursor number, the @@ -109597,17 +126377,17 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( VdbeModuleComment((v, "BEGIN: GenRowDel(%d,%d,%d,%d)", iDataCur, iIdxCur, iPk, (int)nPk)); - /* Seek cursor iCur to the row to delete. If this row no longer exists + /* Seek cursor iCur to the row to delete. If this row no longer exists ** (this can happen if a trigger program has already deleted it), do ** not attempt to delete it or fire any DELETE triggers. */ - iLabel = sqlite3VdbeMakeLabel(v); + iLabel = sqlite3VdbeMakeLabel(pParse); opSeek = HasRowid(pTab) ? OP_NotExists : OP_NotFound; if( eMode==ONEPASS_OFF ){ sqlite3VdbeAddOp4Int(v, opSeek, iDataCur, iLabel, iPk, nPk); VdbeCoverageIf(v, opSeek==OP_NotExists); VdbeCoverageIf(v, opSeek==OP_NotFound); } - + /* If there are any triggers to fire, allocate a range of registers to ** use for the old.* references in the triggers. */ if( sqlite3FkRequired(pParse, pTab, 0, 0) || pTrigger ){ @@ -109624,24 +126404,25 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( iOld = pParse->nMem+1; pParse->nMem += (1 + pTab->nCol); - /* Populate the OLD.* pseudo-table register array. These values will be + /* Populate the OLD.* pseudo-table register array. These values will be ** used by any BEFORE and AFTER triggers that exist. */ sqlite3VdbeAddOp2(v, OP_Copy, iPk, iOld); for(iCol=0; iColnCol; iCol++){ testcase( mask!=0xffffffff && iCol==31 ); testcase( mask!=0xffffffff && iCol==32 ); if( mask==0xffffffff || (iCol<=31 && (mask & MASKBIT32(iCol))!=0) ){ - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+iCol+1); + int kk = sqlite3TableColumnToStorage(pTab, iCol); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+kk+1); } } /* Invoke BEFORE DELETE trigger programs. */ addrStart = sqlite3VdbeCurrentAddr(v); - sqlite3CodeRowTrigger(pParse, pTrigger, + sqlite3CodeRowTrigger(pParse, pTrigger, TK_DELETE, 0, TRIGGER_BEFORE, pTab, iOld, onconf, iLabel ); - /* If any BEFORE triggers were coded, then seek the cursor to the + /* If any BEFORE triggers were coded, then seek the cursor to the ** row to be deleted again. It may be that the BEFORE triggers moved ** the cursor or already deleted the row that the cursor was ** pointing to. @@ -109658,22 +126439,22 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( } /* Do FK processing. This call checks that any FK constraints that - ** refer to this table (i.e. constraints attached to other tables) + ** refer to this table (i.e. constraints attached to other tables) ** are not violated by deleting this row. */ sqlite3FkCheck(pParse, pTab, iOld, 0, 0, 0); } /* Delete the index and table entries. Skip this step if pTab is really ** a view (in which case the only effect of the DELETE statement is to - ** fire the INSTEAD OF triggers). + ** fire the INSTEAD OF triggers). ** ** If variable 'count' is non-zero, then this OP_Delete instruction should ** invoke the update-hook. The pre-update-hook, on the other hand should ** be invoked unless table pTab is a system table. The difference is that - ** the update-hook is not invoked for rows removed by REPLACE, but the + ** the update-hook is not invoked for rows removed by REPLACE, but the ** pre-update-hook is. - */ - if( pTab->pSelect==0 ){ + */ + if( !IsView(pTab) ){ u8 p5 = 0; sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,iIdxNoSeek); sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, (count?OPFLAG_NCHANGE:0)); @@ -109692,16 +126473,18 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to ** handle rows (possibly in other tables) that refer via a foreign key - ** to the row just deleted. */ + ** to the row just deleted. */ sqlite3FkActions(pParse, pTab, 0, iOld, 0, 0); /* Invoke AFTER DELETE trigger programs. */ - sqlite3CodeRowTrigger(pParse, pTrigger, - TK_DELETE, 0, TRIGGER_AFTER, pTab, iOld, onconf, iLabel - ); + if( pTrigger ){ + sqlite3CodeRowTrigger(pParse, pTrigger, + TK_DELETE, 0, TRIGGER_AFTER, pTab, iOld, onconf, iLabel + ); + } /* Jump here if the row had already been deleted before any BEFORE - ** trigger programs were invoked. Or if a trigger program throws a + ** trigger programs were invoked. Or if a trigger program throws a ** RAISE(IGNORE) exception. */ sqlite3VdbeResolveLabel(v, iLabel); VdbeModuleComment((v, "END: GenRowDel()")); @@ -109753,6 +126536,7 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete( &iPartIdxLabel, pPrior, r1); sqlite3VdbeAddOp3(v, OP_IdxDelete, iIdxCur+i, r1, pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn); + sqlite3VdbeChangeP5(v, 1); /* Cause IdxDelete to error if no entry found */ sqlite3ResolvePartIdxLabel(pParse, iPartIdxLabel); pPrior = pIdx; } @@ -109785,7 +126569,7 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete( ** its key into the same sequence of registers and if pPrior and pIdx share ** a column in common, then the register corresponding to that column already ** holds the correct value and the loading of that register is skipped. -** This optimization is helpful when doing a DELETE or an INTEGRITY_CHECK +** This optimization is helpful when doing a DELETE or an INTEGRITY_CHECK ** on a table with multiple indices, and especially with the ROWID or ** PRIMARY KEY columns of the index. */ @@ -109806,12 +126590,13 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( if( piPartIdxLabel ){ if( pIdx->pPartIdxWhere ){ - *piPartIdxLabel = sqlite3VdbeMakeLabel(v); + *piPartIdxLabel = sqlite3VdbeMakeLabel(pParse); pParse->iSelfTab = iDataCur + 1; - sqlite3ExprCachePush(pParse); - sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, + sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, SQLITE_JUMPIFNULL); pParse->iSelfTab = 0; + pPrior = 0; /* Ticket a9efb42811fa41ee 2019-11-02; + ** pPartIdxWhere may have corrupted regPrior registers */ }else{ *piPartIdxLabel = 0; } @@ -109828,20 +126613,18 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( continue; } sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iDataCur, j, regBase+j); - /* If the column affinity is REAL but the number is an integer, then it - ** might be stored in the table as an integer (using a compact - ** representation) then converted to REAL by an OP_RealAffinity opcode. - ** But we are getting ready to store this value back into an index, where - ** it should be converted by to INTEGER again. So omit the OP_RealAffinity - ** opcode if it is present */ - sqlite3VdbeDeletePriorOpcode(v, OP_RealAffinity); + if( pIdx->aiColumn[j]>=0 ){ + /* If the column affinity is REAL but the number is an integer, then it + ** might be stored in the table as an integer (using a compact + ** representation) then converted to REAL by an OP_RealAffinity opcode. + ** But we are getting ready to store this value back into an index, where + ** it should be converted by to INTEGER again. So omit the + ** OP_RealAffinity opcode if it is present */ + sqlite3VdbeDeletePriorOpcode(v, OP_RealAffinity); + } } if( regOut ){ sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regOut); - if( pIdx->pTable->pSelect ){ - const char *zAff = sqlite3IndexAffinityStr(pParse->db, pIdx); - sqlite3VdbeChangeP4(v, -1, zAff, P4_TRANSIENT); - } } sqlite3ReleaseTempRange(pParse, regBase, nCol); return regBase; @@ -109855,7 +126638,6 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse *pParse, int iLabel){ if( iLabel ){ sqlite3VdbeResolveLabel(pParse->pVdbe, iLabel); - sqlite3ExprCachePop(pParse); } } @@ -109879,6 +126661,9 @@ SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse *pParse, int iLabel){ /* #include "sqliteInt.h" */ /* #include */ /* #include */ +#ifndef SQLITE_OMIT_FLOATING_POINT +/* #include */ +#endif /* #include "vdbeInt.h" */ /* @@ -109957,6 +126742,18 @@ static void typeofFunc( sqlite3_result_text(context, azType[i], -1, SQLITE_STATIC); } +/* subtype(X) +** +** Return the subtype of X +*/ +static void subtypeFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + UNUSED_PARAMETER(argc); + sqlite3_result_int(context, sqlite3_value_subtype(argv[0])); +} /* ** Implementation of the length() function @@ -109997,11 +126794,47 @@ static void lengthFunc( } } +/* +** Implementation of the octet_length() function +*/ +static void bytelengthFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + assert( argc==1 ); + UNUSED_PARAMETER(argc); + switch( sqlite3_value_type(argv[0]) ){ + case SQLITE_BLOB: { + sqlite3_result_int(context, sqlite3_value_bytes(argv[0])); + break; + } + case SQLITE_INTEGER: + case SQLITE_FLOAT: { + i64 m = sqlite3_context_db_handle(context)->enc<=SQLITE_UTF8 ? 1 : 2; + sqlite3_result_int64(context, sqlite3_value_bytes(argv[0])*m); + break; + } + case SQLITE_TEXT: { + if( sqlite3_value_encoding(argv[0])<=SQLITE_UTF8 ){ + sqlite3_result_int(context, sqlite3_value_bytes(argv[0])); + }else{ + sqlite3_result_int(context, sqlite3_value_bytes16(argv[0])); + } + break; + } + default: { + sqlite3_result_null(context); + break; + } + } +} + /* ** Implementation of the abs() function. ** ** IMP: R-23979-26855 The abs(X) function returns the absolute value of -** the numeric argument X. +** the numeric argument X. */ static void absFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ assert( argc==1 ); @@ -110018,7 +126851,7 @@ static void absFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ return; } iVal = -iVal; - } + } sqlite3_result_int64(context, iVal); break; } @@ -110064,6 +126897,9 @@ static void instrFunc( int typeHaystack, typeNeedle; int N = 1; int isText; + unsigned char firstChar; + sqlite3_value *pC1 = 0; + sqlite3_value *pC2 = 0; UNUSED_PARAMETER(argc); typeHaystack = sqlite3_value_type(argv[0]); @@ -110076,13 +126912,26 @@ static void instrFunc( zHaystack = sqlite3_value_blob(argv[0]); zNeedle = sqlite3_value_blob(argv[1]); isText = 0; - }else{ + }else if( typeHaystack!=SQLITE_BLOB && typeNeedle!=SQLITE_BLOB ){ zHaystack = sqlite3_value_text(argv[0]); zNeedle = sqlite3_value_text(argv[1]); isText = 1; + }else{ + pC1 = sqlite3_value_dup(argv[0]); + zHaystack = sqlite3_value_text(pC1); + if( zHaystack==0 ) goto endInstrOOM; + nHaystack = sqlite3_value_bytes(pC1); + pC2 = sqlite3_value_dup(argv[1]); + zNeedle = sqlite3_value_text(pC2); + if( zNeedle==0 ) goto endInstrOOM; + nNeedle = sqlite3_value_bytes(pC2); + isText = 1; } - if( zNeedle==0 || (nHaystack && zHaystack==0) ) return; - while( nNeedle<=nHaystack && memcmp(zHaystack, zNeedle, nNeedle)!=0 ){ + if( zNeedle==0 || (nHaystack && zHaystack==0) ) goto endInstrOOM; + firstChar = zNeedle[0]; + while( nNeedle<=nHaystack + && (zHaystack[0]!=firstChar || memcmp(zHaystack, zNeedle, nNeedle)!=0) + ){ N++; do{ nHaystack--; @@ -110092,10 +126941,17 @@ static void instrFunc( if( nNeedle>nHaystack ) N = 0; } sqlite3_result_int(context, N); +endInstr: + sqlite3_value_free(pC1); + sqlite3_value_free(pC2); + return; +endInstrOOM: + sqlite3_result_error_nomem(context); + goto endInstr; } /* -** Implementation of the printf() function. +** Implementation of the printf() (a.k.a. format()) SQL function. */ static void printfFunc( sqlite3_context *context, @@ -110245,12 +127101,12 @@ static void roundFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ ** handle the rounding directly, ** otherwise use printf. */ - if( n==0 && r>=0 && r+4503599627370496.0 ){ + /* The value has no fractional part so there is nothing to round */ + }else if( n==0 ){ + r = (double)((sqlite_int64)(r+(r<0?-0.5:+0.5))); }else{ - zBuf = sqlite3_mprintf("%.*f",n,r); + zBuf = sqlite3_mprintf("%!.*f",n,r); if( zBuf==0 ){ sqlite3_result_error_nomem(context); return; @@ -110340,7 +127196,7 @@ static void lowerFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ #define noopFunc versionFunc /* Substitute function - never called */ /* -** Implementation of random(). Return a random integer. +** Implementation of random(). Return a random integer. */ static void randomFunc( sqlite3_context *context, @@ -110351,11 +127207,11 @@ static void randomFunc( UNUSED_PARAMETER2(NotUsed, NotUsed2); sqlite3_randomness(sizeof(r), &r); if( r<0 ){ - /* We need to prevent a random number of 0x8000000000000000 + /* We need to prevent a random number of 0x8000000000000000 ** (or -9223372036854775808) since when you do abs() of that ** number of you get the same value back again. To do this ** in a way that is testable, mask the sign bit off of negative - ** values, resulting in a positive value. Then take the + ** values, resulting in a positive value. Then take the ** 2s complement of that positive value. The end result can ** therefore be no less than -9223372036854775807. */ @@ -110373,11 +127229,11 @@ static void randomBlob( int argc, sqlite3_value **argv ){ - int n; + sqlite3_int64 n; unsigned char *p; assert( argc==1 ); UNUSED_PARAMETER(argc); - n = sqlite3_value_int(argv[0]); + n = sqlite3_value_int64(argv[0]); if( n<1 ){ n = 1; } @@ -110393,8 +127249,8 @@ static void randomBlob( ** value is the same as the sqlite3_last_insert_rowid() API function. */ static void last_insert_rowid( - sqlite3_context *context, - int NotUsed, + sqlite3_context *context, + int NotUsed, sqlite3_value **NotUsed2 ){ sqlite3 *db = sqlite3_context_db_handle(context); @@ -110408,9 +127264,9 @@ static void last_insert_rowid( /* ** Implementation of the changes() SQL function. ** -** IMP: R-62073-11209 The changes() SQL function is a wrapper -** around the sqlite3_changes() C/C++ function and hence follows the same -** rules for counting changes. +** IMP: R-32760-32347 The changes() SQL function is a wrapper +** around the sqlite3_changes64() C/C++ function and hence follows the +** same rules for counting changes. */ static void changes( sqlite3_context *context, @@ -110419,12 +127275,12 @@ static void changes( ){ sqlite3 *db = sqlite3_context_db_handle(context); UNUSED_PARAMETER2(NotUsed, NotUsed2); - sqlite3_result_int(context, sqlite3_changes(db)); + sqlite3_result_int64(context, sqlite3_changes64(db)); } /* ** Implementation of the total_changes() SQL function. The return value is -** the same as the sqlite3_total_changes() API function. +** the same as the sqlite3_total_changes64() API function. */ static void total_changes( sqlite3_context *context, @@ -110433,9 +127289,9 @@ static void total_changes( ){ sqlite3 *db = sqlite3_context_db_handle(context); UNUSED_PARAMETER2(NotUsed, NotUsed2); - /* IMP: R-52756-41993 This function is a wrapper around the - ** sqlite3_total_changes() C/C++ interface. */ - sqlite3_result_int(context, sqlite3_total_changes(db)); + /* IMP: R-11217-42568 This function is a wrapper around the + ** sqlite3_total_changes64() C/C++ interface. */ + sqlite3_result_int64(context, sqlite3_total_changes64(db)); } /* @@ -110450,7 +127306,7 @@ struct compareInfo { /* ** For LIKE and GLOB matching on EBCDIC machines, assume that every -** character is exactly one byte in size. Also, provde the Utf8Read() +** character is exactly one byte in size. Also, provide the Utf8Read() ** macro for fast reading of the next character in the common case where ** the next character is ASCII. */ @@ -110502,7 +127358,7 @@ static const struct compareInfo likeInfoAlt = { '%', '_', 0, 0 }; ** it the last character in the list. ** ** Like matching rules: -** +** ** '%' Matches any sequence of zero or more characters ** *** '_' Matches any one character @@ -110525,13 +127381,14 @@ static int patternCompare( u32 matchAll = pInfo->matchAll; /* "*" or "%" */ u8 noCase = pInfo->noCase; /* True if uppercase==lowercase */ const u8 *zEscaped = 0; /* One past the last escaped input char */ - + while( (c = Utf8Read(zPattern))!=0 ){ if( c==matchAll ){ /* Match "*" */ /* Skip over multiple "*" characters in the pattern. If there ** are also "?" characters, skip those as well, but consume a ** single character of the input string for each "?" skipped */ - while( (c=Utf8Read(zPattern)) == matchAll || c == matchOne ){ + while( (c=Utf8Read(zPattern)) == matchAll + || (c == matchOne && matchOne!=0) ){ if( c==matchOne && sqlite3Utf8Read(&zString)==0 ){ return SQLITE_NOWILDCARDMATCH; } @@ -110564,7 +127421,7 @@ static int patternCompare( ** c but in the other case and search the input string for either ** c or cx. */ - if( c<=0x80 ){ + if( c<0x80 ){ char zStop[3]; int bMatch; if( noCase ){ @@ -110647,7 +127504,13 @@ static int patternCompare( ** non-zero if there is no match. */ SQLITE_API int sqlite3_strglob(const char *zGlobPattern, const char *zString){ - return patternCompare((u8*)zGlobPattern, (u8*)zString, &globInfo, '['); + if( zString==0 ){ + return zGlobPattern!=0; + }else if( zGlobPattern==0 ){ + return 1; + }else { + return patternCompare((u8*)zGlobPattern, (u8*)zString, &globInfo, '['); + } } /* @@ -110655,7 +127518,13 @@ SQLITE_API int sqlite3_strglob(const char *zGlobPattern, const char *zString){ ** a miss - like strcmp(). */ SQLITE_API int sqlite3_strlike(const char *zPattern, const char *zStr, unsigned int esc){ - return patternCompare((u8*)zPattern, (u8*)zStr, &likeInfoNorm, esc); + if( zStr==0 ){ + return zPattern!=0; + }else if( zPattern==0 ){ + return 1; + }else{ + return patternCompare((u8*)zPattern, (u8*)zStr, &likeInfoNorm, esc); + } } /* @@ -110670,7 +127539,7 @@ SQLITE_API int sqlite3_like_count = 0; /* ** Implementation of the like() SQL function. This function implements -** the build-in LIKE operator. The first argument to the function is the +** the built-in LIKE operator. The first argument to the function is the ** pattern and the second argument is the string. So, the SQL statements: ** ** A LIKE B @@ -110681,8 +127550,8 @@ SQLITE_API int sqlite3_like_count = 0; ** the GLOB operator. */ static void likeFunc( - sqlite3_context *context, - int argc, + sqlite3_context *context, + int argc, sqlite3_value **argv ){ const unsigned char *zA, *zB; @@ -110690,6 +127559,7 @@ static void likeFunc( int nPat; sqlite3 *db = sqlite3_context_db_handle(context); struct compareInfo *pInfo = sqlite3_user_data(context); + struct compareInfo backupInfo; #ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS if( sqlite3_value_type(argv[0])==SQLITE_BLOB @@ -110702,8 +127572,6 @@ static void likeFunc( return; } #endif - zB = sqlite3_value_text(argv[0]); - zA = sqlite3_value_text(argv[1]); /* Limit the length of the LIKE or GLOB pattern to avoid problems ** of deep recursion and N*N behavior in patternCompare(). @@ -110715,8 +127583,6 @@ static void likeFunc( sqlite3_result_error(context, "LIKE or GLOB pattern too complex", -1); return; } - assert( zB==sqlite3_value_text(argv[0]) ); /* Encoding did not change */ - if( argc==3 ){ /* The escape character string must consist of a single UTF-8 character. ** Otherwise, return an error. @@ -110724,14 +127590,22 @@ static void likeFunc( const unsigned char *zEsc = sqlite3_value_text(argv[2]); if( zEsc==0 ) return; if( sqlite3Utf8CharLen((char*)zEsc, -1)!=1 ){ - sqlite3_result_error(context, + sqlite3_result_error(context, "ESCAPE expression must be a single character", -1); return; } escape = sqlite3Utf8Read(&zEsc); + if( escape==pInfo->matchAll || escape==pInfo->matchOne ){ + memcpy(&backupInfo, pInfo, sizeof(backupInfo)); + pInfo = &backupInfo; + if( escape==pInfo->matchAll ) pInfo->matchAll = 0; + if( escape==pInfo->matchOne ) pInfo->matchOne = 0; + } }else{ escape = pInfo->matchSet; } + zB = sqlite3_value_text(argv[0]); + zA = sqlite3_value_text(argv[1]); if( zA && zB ){ #ifdef SQLITE_TEST sqlite3_like_count++; @@ -110829,8 +127703,8 @@ static void compileoptionusedFunc( #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ /* -** Implementation of the sqlite_compileoption_get() function. -** The result is a string that identifies the compiler options +** Implementation of the sqlite_compileoption_get() function. +** The result is a string that identifies the compiler options ** used to build SQLite. */ #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS @@ -110854,43 +127728,46 @@ static void compileoptiongetFunc( ** digits. */ static const char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', - '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; /* -** Implementation of the QUOTE() function. This function takes a single -** argument. If the argument is numeric, the return value is the same as -** the argument. If the argument is NULL, the return value is the string -** "NULL". Otherwise, the argument is enclosed in single quotes with -** single-quote escapes. +** Append to pStr text that is the SQL literal representation of the +** value contained in pValue. */ -static void quoteFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ - assert( argc==1 ); - UNUSED_PARAMETER(argc); - switch( sqlite3_value_type(argv[0]) ){ +SQLITE_PRIVATE void sqlite3QuoteValue(StrAccum *pStr, sqlite3_value *pValue){ + /* As currently implemented, the string must be initially empty. + ** we might relax this requirement in the future, but that will + ** require enhancements to the implementation. */ + assert( pStr!=0 && pStr->nChar==0 ); + + switch( sqlite3_value_type(pValue) ){ case SQLITE_FLOAT: { double r1, r2; - char zBuf[50]; - r1 = sqlite3_value_double(argv[0]); - sqlite3_snprintf(sizeof(zBuf), zBuf, "%!.15g", r1); - sqlite3AtoF(zBuf, &r2, 20, SQLITE_UTF8); - if( r1!=r2 ){ - sqlite3_snprintf(sizeof(zBuf), zBuf, "%!.20e", r1); + const char *zVal; + r1 = sqlite3_value_double(pValue); + sqlite3_str_appendf(pStr, "%!.15g", r1); + zVal = sqlite3_str_value(pStr); + if( zVal ){ + sqlite3AtoF(zVal, &r2, pStr->nChar, SQLITE_UTF8); + if( r1!=r2 ){ + sqlite3_str_reset(pStr); + sqlite3_str_appendf(pStr, "%!.20e", r1); + } } - sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); break; } case SQLITE_INTEGER: { - sqlite3_result_value(context, argv[0]); + sqlite3_str_appendf(pStr, "%lld", sqlite3_value_int64(pValue)); break; } case SQLITE_BLOB: { - char *zText = 0; - char const *zBlob = sqlite3_value_blob(argv[0]); - int nBlob = sqlite3_value_bytes(argv[0]); - assert( zBlob==sqlite3_value_blob(argv[0]) ); /* No encoding change */ - zText = (char *)contextMalloc(context, (2*(i64)nBlob)+4); - if( zText ){ + char const *zBlob = sqlite3_value_blob(pValue); + i64 nBlob = sqlite3_value_bytes(pValue); + assert( zBlob==sqlite3_value_blob(pValue) ); /* No encoding change */ + sqlite3StrAccumEnlarge(pStr, nBlob*2 + 4); + if( pStr->accError==0 ){ + char *zText = pStr->zText; int i; for(i=0; i>4)&0x0F]; @@ -110900,45 +127777,51 @@ static void quoteFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ zText[(nBlob*2)+3] = '\0'; zText[0] = 'X'; zText[1] = '\''; - sqlite3_result_text(context, zText, -1, SQLITE_TRANSIENT); - sqlite3_free(zText); + pStr->nChar = nBlob*2 + 3; } break; } case SQLITE_TEXT: { - int i,j; - u64 n; - const unsigned char *zArg = sqlite3_value_text(argv[0]); - char *z; - - if( zArg==0 ) return; - for(i=0, n=0; zArg[i]; i++){ if( zArg[i]=='\'' ) n++; } - z = contextMalloc(context, ((i64)i)+((i64)n)+3); - if( z ){ - z[0] = '\''; - for(i=0, j=1; zArg[i]; i++){ - z[j++] = zArg[i]; - if( zArg[i]=='\'' ){ - z[j++] = '\''; - } - } - z[j++] = '\''; - z[j] = 0; - sqlite3_result_text(context, z, j, sqlite3_free); - } + const unsigned char *zArg = sqlite3_value_text(pValue); + sqlite3_str_appendf(pStr, "%Q", zArg); break; } default: { - assert( sqlite3_value_type(argv[0])==SQLITE_NULL ); - sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC); + assert( sqlite3_value_type(pValue)==SQLITE_NULL ); + sqlite3_str_append(pStr, "NULL", 4); break; } } } +/* +** Implementation of the QUOTE() function. +** +** The quote(X) function returns the text of an SQL literal which is the +** value of its argument suitable for inclusion into an SQL statement. +** Strings are surrounded by single-quotes with escapes on interior quotes +** as needed. BLOBs are encoded as hexadecimal literals. Strings with +** embedded NUL characters cannot be represented as string literals in SQL +** and hence the returned string literal is truncated prior to the first NUL. +*/ +static void quoteFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ + sqlite3_str str; + sqlite3 *db = sqlite3_context_db_handle(context); + assert( argc==1 ); + UNUSED_PARAMETER(argc); + sqlite3StrAccumInit(&str, db, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]); + sqlite3QuoteValue(&str,argv[0]); + sqlite3_result_text(context, sqlite3StrAccumFinish(&str), str.nChar, + SQLITE_DYNAMIC); + if( str.accError!=SQLITE_OK ){ + sqlite3_result_null(context); + sqlite3_result_error_code(context, str.accError); + } +} + /* ** The unicode() function. Return the integer unicode code-point value -** for the first character of the input string. +** for the first character of the input string. */ static void unicodeFunc( sqlite3_context *context, @@ -110989,6 +127872,7 @@ static void charFunc( *zOut++ = 0x80 + (u8)(c & 0x3F); } \ } + *zOut = 0; sqlite3_result_text64(context, (char*)z, zOut-z, sqlite3_free, SQLITE_UTF8); } @@ -111021,6 +127905,96 @@ static void hexFunc( } } +/* +** Buffer zStr contains nStr bytes of utf-8 encoded text. Return 1 if zStr +** contains character ch, or 0 if it does not. +*/ +static int strContainsChar(const u8 *zStr, int nStr, u32 ch){ + const u8 *zEnd = &zStr[nStr]; + const u8 *z = zStr; + while( z0 ){ - azChar = contextMalloc(context, ((i64)nChar)*(sizeof(char*)+1)); + azChar = contextMalloc(context, + ((i64)nChar)*(sizeof(char*)+sizeof(unsigned))); if( azChar==0 ){ return; } - aLen = (unsigned char*)&azChar[nChar]; + aLen = (unsigned*)&azChar[nChar]; for(z=zCharSet, nChar=0; *z; nChar++){ azChar[nChar] = (unsigned char *)z; SQLITE_SKIP_UTF8(z); - aLen[nChar] = (u8)(z - azChar[nChar]); + aLen[nChar] = (unsigned)(z - azChar[nChar]); } } } @@ -111192,7 +128167,7 @@ static void trimFunc( flags = SQLITE_PTR_TO_INT(sqlite3_user_data(context)); if( flags & 1 ){ while( nIn>0 ){ - int len = 0; + unsigned int len = 0; for(i=0; i0 ){ - int len = 0; + unsigned int len = 0; for(i=0; irSum; + volatile double t = s + r; + if( fabs(s) > fabs(r) ){ + pSum->rErr += (s - t) + r; + }else{ + pSum->rErr += (r - t) + s; + } + pSum->rSum = t; +} + +/* +** Add a (possibly large) integer to the running sum. +*/ +static void kahanBabuskaNeumaierStepInt64(volatile SumCtx *pSum, i64 iVal){ + if( iVal<=-4503599627370496LL || iVal>=+4503599627370496LL ){ + i64 iBig, iSm; + iSm = iVal % 16384; + iBig = iVal - iSm; + kahanBabuskaNeumaierStep(pSum, iBig); + kahanBabuskaNeumaierStep(pSum, iSm); + }else{ + kahanBabuskaNeumaierStep(pSum, (double)iVal); + } +} + +/* +** Initialize the Kahan-Babaska-Neumaier sum from a 64-bit integer +*/ +static void kahanBabuskaNeumaierInit( + volatile SumCtx *p, + i64 iVal +){ + if( iVal<=-4503599627370496LL || iVal>=+4503599627370496LL ){ + i64 iSm = iVal % 16384; + p->rSum = (double)(iVal - iSm); + p->rErr = (double)iSm; + }else{ + p->rSum = (double)iVal; + p->rErr = 0.0; + } +} + /* ** Routines used to compute the sum, average, and total. ** @@ -111364,26 +128397,73 @@ static void sumStep(sqlite3_context *context, int argc, sqlite3_value **argv){ type = sqlite3_value_numeric_type(argv[0]); if( p && type!=SQLITE_NULL ){ p->cnt++; - if( type==SQLITE_INTEGER ){ - i64 v = sqlite3_value_int64(argv[0]); - p->rSum += v; - if( (p->approx|p->overflow)==0 && sqlite3AddInt64(&p->iSum, v) ){ - p->overflow = 1; + if( p->approx==0 ){ + if( type!=SQLITE_INTEGER ){ + kahanBabuskaNeumaierInit(p, p->iSum); + p->approx = 1; + kahanBabuskaNeumaierStep(p, sqlite3_value_double(argv[0])); + }else{ + i64 x = p->iSum; + if( sqlite3AddInt64(&x, sqlite3_value_int64(argv[0]))==0 ){ + p->iSum = x; + }else{ + p->ovrfl = 1; + kahanBabuskaNeumaierInit(p, p->iSum); + p->approx = 1; + kahanBabuskaNeumaierStepInt64(p, sqlite3_value_int64(argv[0])); + } } }else{ - p->rSum += sqlite3_value_double(argv[0]); - p->approx = 1; + if( type==SQLITE_INTEGER ){ + kahanBabuskaNeumaierStepInt64(p, sqlite3_value_int64(argv[0])); + }else{ + p->ovrfl = 0; + kahanBabuskaNeumaierStep(p, sqlite3_value_double(argv[0])); + } } } } +#ifndef SQLITE_OMIT_WINDOWFUNC +static void sumInverse(sqlite3_context *context, int argc, sqlite3_value**argv){ + SumCtx *p; + int type; + assert( argc==1 ); + UNUSED_PARAMETER(argc); + p = sqlite3_aggregate_context(context, sizeof(*p)); + type = sqlite3_value_numeric_type(argv[0]); + /* p is always non-NULL because sumStep() will have been called first + ** to initialize it */ + if( ALWAYS(p) && type!=SQLITE_NULL ){ + assert( p->cnt>0 ); + p->cnt--; + if( !p->approx ){ + p->iSum -= sqlite3_value_int64(argv[0]); + }else if( type==SQLITE_INTEGER ){ + i64 iVal = sqlite3_value_int64(argv[0]); + if( iVal!=SMALLEST_INT64 ){ + kahanBabuskaNeumaierStepInt64(p, -iVal); + }else{ + kahanBabuskaNeumaierStepInt64(p, LARGEST_INT64); + kahanBabuskaNeumaierStepInt64(p, 1); + } + }else{ + kahanBabuskaNeumaierStep(p, -sqlite3_value_double(argv[0])); + } + } +} +#else +# define sumInverse 0 +#endif /* SQLITE_OMIT_WINDOWFUNC */ static void sumFinalize(sqlite3_context *context){ SumCtx *p; p = sqlite3_aggregate_context(context, 0); if( p && p->cnt>0 ){ - if( p->overflow ){ - sqlite3_result_error(context,"integer overflow",-1); - }else if( p->approx ){ - sqlite3_result_double(context, p->rSum); + if( p->approx ){ + if( p->ovrfl ){ + sqlite3_result_error(context,"integer overflow",-1); + }else{ + sqlite3_result_double(context, p->rSum+p->rErr); + } }else{ sqlite3_result_int64(context, p->iSum); } @@ -111393,14 +128473,27 @@ static void avgFinalize(sqlite3_context *context){ SumCtx *p; p = sqlite3_aggregate_context(context, 0); if( p && p->cnt>0 ){ - sqlite3_result_double(context, p->rSum/(double)p->cnt); + double r; + if( p->approx ){ + r = p->rSum+p->rErr; + }else{ + r = (double)(p->iSum); + } + sqlite3_result_double(context, r/(double)p->cnt); } } static void totalFinalize(sqlite3_context *context){ SumCtx *p; + double r = 0.0; p = sqlite3_aggregate_context(context, 0); - /* (double)0 In case of SQLITE_OMIT_FLOATING_POINT... */ - sqlite3_result_double(context, p ? p->rSum : (double)0); + if( p ){ + if( p->approx ){ + r = p->rSum+p->rErr; + }else{ + r = (double)(p->iSum); + } + } + sqlite3_result_double(context, r); } /* @@ -111410,6 +128503,9 @@ static void totalFinalize(sqlite3_context *context){ typedef struct CountCtx CountCtx; struct CountCtx { i64 n; +#ifdef SQLITE_DEBUG + int bInverse; /* True if xInverse() ever called */ +#endif }; /* @@ -111424,25 +128520,40 @@ static void countStep(sqlite3_context *context, int argc, sqlite3_value **argv){ #ifndef SQLITE_OMIT_DEPRECATED /* The sqlite3_aggregate_count() function is deprecated. But just to make - ** sure it still operates correctly, verify that its count agrees with our + ** sure it still operates correctly, verify that its count agrees with our ** internal count when using count(*) and when the total count can be ** expressed as a 32-bit integer. */ - assert( argc==1 || p==0 || p->n>0x7fffffff + assert( argc==1 || p==0 || p->n>0x7fffffff || p->bInverse || p->n==sqlite3_aggregate_count(context) ); #endif -} +} static void countFinalize(sqlite3_context *context){ CountCtx *p; p = sqlite3_aggregate_context(context, 0); sqlite3_result_int64(context, p ? p->n : 0); } +#ifndef SQLITE_OMIT_WINDOWFUNC +static void countInverse(sqlite3_context *ctx, int argc, sqlite3_value **argv){ + CountCtx *p; + p = sqlite3_aggregate_context(ctx, sizeof(*p)); + /* p is always non-NULL since countStep() will have been called first */ + if( (argc==0 || SQLITE_NULL!=sqlite3_value_type(argv[0])) && ALWAYS(p) ){ + p->n--; +#ifdef SQLITE_DEBUG + p->bInverse = 1; +#endif + } +} +#else +# define countInverse 0 +#endif /* SQLITE_OMIT_WINDOWFUNC */ /* ** Routines to implement min() and max() aggregate functions. */ static void minmaxStep( - sqlite3_context *context, - int NotUsed, + sqlite3_context *context, + int NotUsed, sqlite3_value **argv ){ Mem *pArg = (Mem *)argv[0]; @@ -111452,7 +128563,7 @@ static void minmaxStep( pBest = (Mem *)sqlite3_aggregate_context(context, sizeof(*pBest)); if( !pBest ) return; - if( sqlite3_value_type(argv[0])==SQLITE_NULL ){ + if( sqlite3_value_type(pArg)==SQLITE_NULL ){ if( pBest->flags ) sqlite3SkipAccumulatorLoad(context); }else if( pBest->flags ){ int max; @@ -111478,66 +128589,196 @@ static void minmaxStep( sqlite3VdbeMemCopy(pBest, pArg); } } -static void minMaxFinalize(sqlite3_context *context){ +static void minMaxValueFinalize(sqlite3_context *context, int bValue){ sqlite3_value *pRes; pRes = (sqlite3_value *)sqlite3_aggregate_context(context, 0); if( pRes ){ if( pRes->flags ){ sqlite3_result_value(context, pRes); } - sqlite3VdbeMemRelease(pRes); + if( bValue==0 ) sqlite3VdbeMemRelease(pRes); } } +#ifndef SQLITE_OMIT_WINDOWFUNC +static void minMaxValue(sqlite3_context *context){ + minMaxValueFinalize(context, 1); +} +#else +# define minMaxValue 0 +#endif /* SQLITE_OMIT_WINDOWFUNC */ +static void minMaxFinalize(sqlite3_context *context){ + minMaxValueFinalize(context, 0); +} /* ** group_concat(EXPR, ?SEPARATOR?) +** +** The SEPARATOR goes before the EXPR string. This is tragic. The +** groupConcatInverse() implementation would have been easier if the +** SEPARATOR were appended after EXPR. And the order is undocumented, +** so we could change it, in theory. But the old behavior has been +** around for so long that we dare not, for fear of breaking something. */ +typedef struct { + StrAccum str; /* The accumulated concatenation */ +#ifndef SQLITE_OMIT_WINDOWFUNC + int nAccum; /* Number of strings presently concatenated */ + int nFirstSepLength; /* Used to detect separator length change */ + /* If pnSepLengths!=0, refs an array of inter-string separator lengths, + ** stored as actually incorporated into presently accumulated result. + ** (Hence, its slots in use number nAccum-1 between method calls.) + ** If pnSepLengths==0, nFirstSepLength is the length used throughout. + */ + int *pnSepLengths; +#endif +} GroupConcatCtx; + static void groupConcatStep( sqlite3_context *context, int argc, sqlite3_value **argv ){ const char *zVal; - StrAccum *pAccum; + GroupConcatCtx *pGCC; const char *zSep; int nVal, nSep; assert( argc==1 || argc==2 ); if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; - pAccum = (StrAccum*)sqlite3_aggregate_context(context, sizeof(*pAccum)); - - if( pAccum ){ + pGCC = (GroupConcatCtx*)sqlite3_aggregate_context(context, sizeof(*pGCC)); + if( pGCC ){ sqlite3 *db = sqlite3_context_db_handle(context); - int firstTerm = pAccum->mxAlloc==0; - pAccum->mxAlloc = db->aLimit[SQLITE_LIMIT_LENGTH]; - if( !firstTerm ){ - if( argc==2 ){ - zSep = (char*)sqlite3_value_text(argv[1]); - nSep = sqlite3_value_bytes(argv[1]); - }else{ - zSep = ","; - nSep = 1; + int firstTerm = pGCC->str.mxAlloc==0; + pGCC->str.mxAlloc = db->aLimit[SQLITE_LIMIT_LENGTH]; + if( argc==1 ){ + if( !firstTerm ){ + sqlite3_str_appendchar(&pGCC->str, 1, ','); } - if( zSep ) sqlite3_str_append(pAccum, zSep, nSep); +#ifndef SQLITE_OMIT_WINDOWFUNC + else{ + pGCC->nFirstSepLength = 1; + } +#endif + }else if( !firstTerm ){ + zSep = (char*)sqlite3_value_text(argv[1]); + nSep = sqlite3_value_bytes(argv[1]); + if( zSep ){ + sqlite3_str_append(&pGCC->str, zSep, nSep); + } +#ifndef SQLITE_OMIT_WINDOWFUNC + else{ + nSep = 0; + } + if( nSep != pGCC->nFirstSepLength || pGCC->pnSepLengths != 0 ){ + int *pnsl = pGCC->pnSepLengths; + if( pnsl == 0 ){ + /* First separator length variation seen, start tracking them. */ + pnsl = (int*)sqlite3_malloc64((pGCC->nAccum+1) * sizeof(int)); + if( pnsl!=0 ){ + int i = 0, nA = pGCC->nAccum-1; + while( inFirstSepLength; + } + }else{ + pnsl = (int*)sqlite3_realloc64(pnsl, pGCC->nAccum * sizeof(int)); + } + if( pnsl!=0 ){ + if( ALWAYS(pGCC->nAccum>0) ){ + pnsl[pGCC->nAccum-1] = nSep; + } + pGCC->pnSepLengths = pnsl; + }else{ + sqlite3StrAccumSetError(&pGCC->str, SQLITE_NOMEM); + } + } +#endif } +#ifndef SQLITE_OMIT_WINDOWFUNC + else{ + pGCC->nFirstSepLength = sqlite3_value_bytes(argv[1]); + } + pGCC->nAccum += 1; +#endif zVal = (char*)sqlite3_value_text(argv[0]); nVal = sqlite3_value_bytes(argv[0]); - if( zVal ) sqlite3_str_append(pAccum, zVal, nVal); + if( zVal ) sqlite3_str_append(&pGCC->str, zVal, nVal); } } + +#ifndef SQLITE_OMIT_WINDOWFUNC +static void groupConcatInverse( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GroupConcatCtx *pGCC; + assert( argc==1 || argc==2 ); + (void)argc; /* Suppress unused parameter warning */ + if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; + pGCC = (GroupConcatCtx*)sqlite3_aggregate_context(context, sizeof(*pGCC)); + /* pGCC is always non-NULL since groupConcatStep() will have always + ** run first to initialize it */ + if( ALWAYS(pGCC) ){ + int nVS; + /* Must call sqlite3_value_text() to convert the argument into text prior + ** to invoking sqlite3_value_bytes(), in case the text encoding is UTF16 */ + (void)sqlite3_value_text(argv[0]); + nVS = sqlite3_value_bytes(argv[0]); + pGCC->nAccum -= 1; + if( pGCC->pnSepLengths!=0 ){ + assert(pGCC->nAccum >= 0); + if( pGCC->nAccum>0 ){ + nVS += *pGCC->pnSepLengths; + memmove(pGCC->pnSepLengths, pGCC->pnSepLengths+1, + (pGCC->nAccum-1)*sizeof(int)); + } + }else{ + /* If removing single accumulated string, harmlessly over-do. */ + nVS += pGCC->nFirstSepLength; + } + if( nVS>=(int)pGCC->str.nChar ){ + pGCC->str.nChar = 0; + }else{ + pGCC->str.nChar -= nVS; + memmove(pGCC->str.zText, &pGCC->str.zText[nVS], pGCC->str.nChar); + } + if( pGCC->str.nChar==0 ){ + pGCC->str.mxAlloc = 0; + sqlite3_free(pGCC->pnSepLengths); + pGCC->pnSepLengths = 0; + } + } +} +#else +# define groupConcatInverse 0 +#endif /* SQLITE_OMIT_WINDOWFUNC */ static void groupConcatFinalize(sqlite3_context *context){ - StrAccum *pAccum; - pAccum = sqlite3_aggregate_context(context, 0); - if( pAccum ){ + GroupConcatCtx *pGCC + = (GroupConcatCtx*)sqlite3_aggregate_context(context, 0); + if( pGCC ){ + sqlite3ResultStrAccum(context, &pGCC->str); +#ifndef SQLITE_OMIT_WINDOWFUNC + sqlite3_free(pGCC->pnSepLengths); +#endif + } +} +#ifndef SQLITE_OMIT_WINDOWFUNC +static void groupConcatValue(sqlite3_context *context){ + GroupConcatCtx *pGCC + = (GroupConcatCtx*)sqlite3_aggregate_context(context, 0); + if( pGCC ){ + StrAccum *pAccum = &pGCC->str; if( pAccum->accError==SQLITE_TOOBIG ){ sqlite3_result_error_toobig(context); }else if( pAccum->accError==SQLITE_NOMEM ){ sqlite3_result_error_nomem(context); - }else{ - sqlite3_result_text(context, sqlite3StrAccumFinish(pAccum), -1, - sqlite3_free); + }else{ + const char *zText = sqlite3_str_value(pAccum); + sqlite3_result_text(context, zText, pAccum->nChar, SQLITE_TRANSIENT); } } } +#else +# define groupConcatValue 0 +#endif /* SQLITE_OMIT_WINDOWFUNC */ /* ** This routine does per-connection function registration. Most @@ -111553,42 +128794,36 @@ SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3 *db){ } /* -** Set the LIKEOPT flag on the 2-argument function with the given name. -*/ -static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){ - FuncDef *pDef; - pDef = sqlite3FindFunction(db, zName, 2, SQLITE_UTF8, 0); - if( ALWAYS(pDef) ){ - pDef->funcFlags |= flagVal; - } -} - -/* -** Register the built-in LIKE and GLOB functions. The caseSensitive +** Re-register the built-in LIKE functions. The caseSensitive ** parameter determines whether or not the LIKE operator is case -** sensitive. GLOB is always case sensitive. +** sensitive. */ SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3 *db, int caseSensitive){ + FuncDef *pDef; struct compareInfo *pInfo; + int flags; + int nArg; if( caseSensitive ){ pInfo = (struct compareInfo*)&likeInfoAlt; + flags = SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE; }else{ pInfo = (struct compareInfo*)&likeInfoNorm; + flags = SQLITE_FUNC_LIKE; + } + for(nArg=2; nArg<=3; nArg++){ + sqlite3CreateFunc(db, "like", nArg, SQLITE_UTF8, pInfo, likeFunc, + 0, 0, 0, 0, 0); + pDef = sqlite3FindFunction(db, "like", nArg, SQLITE_UTF8, 0); + pDef->funcFlags |= flags; + pDef->funcFlags &= ~SQLITE_FUNC_UNSAFE; } - sqlite3CreateFunc(db, "like", 2, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0); - sqlite3CreateFunc(db, "like", 3, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0); - sqlite3CreateFunc(db, "glob", 2, SQLITE_UTF8, - (struct compareInfo*)&globInfo, likeFunc, 0, 0, 0); - setLikeOptFlag(db, "glob", SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE); - setLikeOptFlag(db, "like", - caseSensitive ? (SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE) : SQLITE_FUNC_LIKE); } /* ** pExpr points to an expression which implements a function. If ** it is appropriate to apply the LIKE optimization to that function ** then set aWc[0] through aWc[2] to the wildcard characters and the -** escape character and then return TRUE. If the function is not a +** escape character and then return TRUE. If the function is not a ** LIKE-style function then return FALSE. ** ** The expression "a LIKE b ESCAPE c" is only considered a valid LIKE @@ -111604,25 +128839,21 @@ SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3 *db, int caseSensitive) SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){ FuncDef *pDef; int nExpr; - if( pExpr->op!=TK_FUNCTION || !pExpr->x.pList ){ + assert( pExpr!=0 ); + assert( pExpr->op==TK_FUNCTION ); + assert( ExprUseXList(pExpr) ); + if( !pExpr->x.pList ){ return 0; } - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); nExpr = pExpr->x.pList->nExpr; + assert( !ExprHasProperty(pExpr, EP_IntValue) ); pDef = sqlite3FindFunction(db, pExpr->u.zToken, nExpr, SQLITE_UTF8, 0); +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + if( pDef==0 ) return 0; +#endif if( NEVER(pDef==0) || (pDef->funcFlags & SQLITE_FUNC_LIKE)==0 ){ return 0; } - if( nExpr<3 ){ - aWc[3] = 0; - }else{ - Expr *pEscape = pExpr->x.pList->a[2].pExpr; - char *zEscape; - if( pEscape->op!=TK_STRING ) return 0; - zEscape = pEscape->u.zToken; - if( zEscape[0]==0 || zEscape[1]!=0 ) return 0; - aWc[3] = zEscape[0]; - } /* The memcpy() statement assumes that the wildcard characters are ** the first three statements in the compareInfo structure. The @@ -111632,10 +128863,262 @@ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocas assert( (char*)&likeInfoAlt == (char*)&likeInfoAlt.matchAll ); assert( &((char*)&likeInfoAlt)[1] == (char*)&likeInfoAlt.matchOne ); assert( &((char*)&likeInfoAlt)[2] == (char*)&likeInfoAlt.matchSet ); + + if( nExpr<3 ){ + aWc[3] = 0; + }else{ + Expr *pEscape = pExpr->x.pList->a[2].pExpr; + char *zEscape; + if( pEscape->op!=TK_STRING ) return 0; + assert( !ExprHasProperty(pEscape, EP_IntValue) ); + zEscape = pEscape->u.zToken; + if( zEscape[0]==0 || zEscape[1]!=0 ) return 0; + if( zEscape[0]==aWc[0] ) return 0; + if( zEscape[0]==aWc[1] ) return 0; + aWc[3] = zEscape[0]; + } + *pIsNocase = (pDef->funcFlags & SQLITE_FUNC_CASE)==0; return 1; } +/* Mathematical Constants */ +#ifndef M_PI +# define M_PI 3.141592653589793238462643383279502884 +#endif +#ifndef M_LN10 +# define M_LN10 2.302585092994045684017991454684364208 +#endif +#ifndef M_LN2 +# define M_LN2 0.693147180559945309417232121458176568 +#endif + + +/* Extra math functions that require linking with -lm +*/ +#ifdef SQLITE_ENABLE_MATH_FUNCTIONS +/* +** Implementation SQL functions: +** +** ceil(X) +** ceiling(X) +** floor(X) +** +** The sqlite3_user_data() pointer is a pointer to the libm implementation +** of the underlying C function. +*/ +static void ceilingFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + assert( argc==1 ); + switch( sqlite3_value_numeric_type(argv[0]) ){ + case SQLITE_INTEGER: { + sqlite3_result_int64(context, sqlite3_value_int64(argv[0])); + break; + } + case SQLITE_FLOAT: { + double (*x)(double) = (double(*)(double))sqlite3_user_data(context); + sqlite3_result_double(context, x(sqlite3_value_double(argv[0]))); + break; + } + default: { + break; + } + } +} + +/* +** On some systems, ceil() and floor() are intrinsic function. You are +** unable to take a pointer to these functions. Hence, we here wrap them +** in our own actual functions. +*/ +static double xCeil(double x){ return ceil(x); } +static double xFloor(double x){ return floor(x); } + +/* +** Some systems do not have log2() and log10() in their standard math +** libraries. +*/ +#if defined(HAVE_LOG10) && HAVE_LOG10==0 +# define log10(X) (0.4342944819032517867*log(X)) +#endif +#if defined(HAVE_LOG2) && HAVE_LOG2==0 +# define log2(X) (1.442695040888963456*log(X)) +#endif + + +/* +** Implementation of SQL functions: +** +** ln(X) - natural logarithm +** log(X) - log X base 10 +** log10(X) - log X base 10 +** log(B,X) - log X base B +*/ +static void logFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + double x, b, ans; + assert( argc==1 || argc==2 ); + switch( sqlite3_value_numeric_type(argv[0]) ){ + case SQLITE_INTEGER: + case SQLITE_FLOAT: + x = sqlite3_value_double(argv[0]); + if( x<=0.0 ) return; + break; + default: + return; + } + if( argc==2 ){ + switch( sqlite3_value_numeric_type(argv[0]) ){ + case SQLITE_INTEGER: + case SQLITE_FLOAT: + b = log(x); + if( b<=0.0 ) return; + x = sqlite3_value_double(argv[1]); + if( x<=0.0 ) return; + break; + default: + return; + } + ans = log(x)/b; + }else{ + switch( SQLITE_PTR_TO_INT(sqlite3_user_data(context)) ){ + case 1: + ans = log10(x); + break; + case 2: + ans = log2(x); + break; + default: + ans = log(x); + break; + } + } + sqlite3_result_double(context, ans); +} + +/* +** Functions to converts degrees to radians and radians to degrees. +*/ +static double degToRad(double x){ return x*(M_PI/180.0); } +static double radToDeg(double x){ return x*(180.0/M_PI); } + +/* +** Implementation of 1-argument SQL math functions: +** +** exp(X) - Compute e to the X-th power +*/ +static void math1Func( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + int type0; + double v0, ans; + double (*x)(double); + assert( argc==1 ); + type0 = sqlite3_value_numeric_type(argv[0]); + if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return; + v0 = sqlite3_value_double(argv[0]); + x = (double(*)(double))sqlite3_user_data(context); + ans = x(v0); + sqlite3_result_double(context, ans); +} + +/* +** Implementation of 2-argument SQL math functions: +** +** power(X,Y) - Compute X to the Y-th power +*/ +static void math2Func( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + int type0, type1; + double v0, v1, ans; + double (*x)(double,double); + assert( argc==2 ); + type0 = sqlite3_value_numeric_type(argv[0]); + if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return; + type1 = sqlite3_value_numeric_type(argv[1]); + if( type1!=SQLITE_INTEGER && type1!=SQLITE_FLOAT ) return; + v0 = sqlite3_value_double(argv[0]); + v1 = sqlite3_value_double(argv[1]); + x = (double(*)(double,double))sqlite3_user_data(context); + ans = x(v0, v1); + sqlite3_result_double(context, ans); +} + +/* +** Implementation of 0-argument pi() function. +*/ +static void piFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + assert( argc==0 ); + (void)argv; + sqlite3_result_double(context, M_PI); +} + +#endif /* SQLITE_ENABLE_MATH_FUNCTIONS */ + +/* +** Implementation of sign(X) function. +*/ +static void signFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + int type0; + double x; + UNUSED_PARAMETER(argc); + assert( argc==1 ); + type0 = sqlite3_value_numeric_type(argv[0]); + if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return; + x = sqlite3_value_double(argv[0]); + sqlite3_result_int(context, x<0.0 ? -1 : x>0.0 ? +1 : 0); +} + +#ifdef SQLITE_DEBUG +/* +** Implementation of fpdecode(x,y,z) function. +** +** x is a real number that is to be decoded. y is the precision. +** z is the maximum real precision. +*/ +static void fpdecodeFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + FpDecode s; + double x; + int y, z; + char zBuf[100]; + UNUSED_PARAMETER(argc); + assert( argc==3 ); + x = sqlite3_value_double(argv[0]); + y = sqlite3_value_int(argv[1]); + z = sqlite3_value_int(argv[2]); + sqlite3FpDecode(&s, x, y, z); + if( s.isSpecial==2 ){ + sqlite3_snprintf(sizeof(zBuf), zBuf, "NaN"); + }else{ + sqlite3_snprintf(sizeof(zBuf), zBuf, "%c%.*s/%d", s.sign, s.n, s.z, s.iDP); + } + sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); +} +#endif /* SQLITE_DEBUG */ + /* ** All of the FuncDef structures in the aBuiltinFunc[] array above ** to the global function hash table. This occurs at start-time (as @@ -111655,12 +129138,20 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** For peak efficiency, put the most frequently used function last. */ static FuncDef aBuiltinFunc[] = { +/***** Functions only available with SQLITE_TESTCTRL_INTERNAL_FUNCTIONS *****/ +#if !defined(SQLITE_UNTESTABLE) + TEST_FUNC(implies_nonnull_row, 2, INLINEFUNC_implies_nonnull_row, 0), + TEST_FUNC(expr_compare, 2, INLINEFUNC_expr_compare, 0), + TEST_FUNC(expr_implies_expr, 2, INLINEFUNC_expr_implies_expr, 0), + TEST_FUNC(affinity, 1, INLINEFUNC_affinity, 0), +#endif /* !defined(SQLITE_UNTESTABLE) */ +/***** Regular functions *****/ #ifdef SQLITE_SOUNDEX FUNCTION(soundex, 1, 0, 0, soundexFunc ), #endif #ifndef SQLITE_OMIT_LOAD_EXTENSION - VFUNCTION(load_extension, 1, 0, 0, loadExt ), - VFUNCTION(load_extension, 2, 0, 0, loadExt ), + SFUNCTION(load_extension, 1, 0, 0, loadExt ), + SFUNCTION(load_extension, 2, 0, 0, loadExt ), #endif #if SQLITE_USER_AUTHENTICATION FUNCTION(sqlite_crypt, 2, 0, 0, sqlite3CryptFunc ), @@ -111669,15 +129160,11 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ DFUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), DFUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - FUNCTION2(unlikely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), - FUNCTION2(likelihood, 2, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), - FUNCTION2(likely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), -#ifdef SQLITE_DEBUG - FUNCTION2(affinity, 1, 0, 0, noopFunc, SQLITE_FUNC_AFFINITY), -#endif + INLINE_FUNC(unlikely, 1, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY), + INLINE_FUNC(likelihood, 2, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY), + INLINE_FUNC(likely, 1, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY), #ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC - FUNCTION2(sqlite_offset, 1, 0, 0, noopFunc, SQLITE_FUNC_OFFSET| - SQLITE_FUNC_TYPEOF), + INLINE_FUNC(sqlite_offset, 1, INLINEFUNC_sqlite_offset, 0 ), #endif FUNCTION(ltrim, 1, 1, 0, trimFunc ), FUNCTION(ltrim, 2, 1, 0, trimFunc ), @@ -111687,19 +129174,25 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ FUNCTION(trim, 2, 3, 0, trimFunc ), FUNCTION(min, -1, 0, 1, minmaxFunc ), FUNCTION(min, 0, 0, 1, 0 ), - AGGREGATE2(min, 1, 0, 1, minmaxStep, minMaxFinalize, - SQLITE_FUNC_MINMAX ), + WAGGREGATE(min, 1, 0, 1, minmaxStep, minMaxFinalize, minMaxValue, 0, + SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ), FUNCTION(max, -1, 1, 1, minmaxFunc ), FUNCTION(max, 0, 1, 1, 0 ), - AGGREGATE2(max, 1, 1, 1, minmaxStep, minMaxFinalize, - SQLITE_FUNC_MINMAX ), + WAGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize, minMaxValue, 0, + SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ), FUNCTION2(typeof, 1, 0, 0, typeofFunc, SQLITE_FUNC_TYPEOF), + FUNCTION2(subtype, 1, 0, 0, subtypeFunc, SQLITE_FUNC_TYPEOF), FUNCTION2(length, 1, 0, 0, lengthFunc, SQLITE_FUNC_LENGTH), + FUNCTION2(octet_length, 1, 0, 0, bytelengthFunc,SQLITE_FUNC_BYTELEN), FUNCTION(instr, 2, 0, 0, instrFunc ), FUNCTION(printf, -1, 0, 0, printfFunc ), + FUNCTION(format, -1, 0, 0, printfFunc ), FUNCTION(unicode, 1, 0, 0, unicodeFunc ), FUNCTION(char, -1, 0, 0, charFunc ), FUNCTION(abs, 1, 0, 0, absFunc ), +#ifdef SQLITE_DEBUG + FUNCTION(fpdecode, 3, 0, 0, fpdecodeFunc ), +#endif #ifndef SQLITE_OMIT_FLOATING_POINT FUNCTION(round, 1, 0, 0, roundFunc ), FUNCTION(round, 2, 0, 0, roundFunc ), @@ -111707,7 +129200,9 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ FUNCTION(upper, 1, 0, 0, upperFunc ), FUNCTION(lower, 1, 0, 0, lowerFunc ), FUNCTION(hex, 1, 0, 0, hexFunc ), - FUNCTION2(ifnull, 2, 0, 0, noopFunc, SQLITE_FUNC_COALESCE), + FUNCTION(unhex, 1, 0, 0, unhexFunc ), + FUNCTION(unhex, 2, 0, 0, unhexFunc ), + INLINE_FUNC(ifnull, 2, INLINEFUNC_coalesce, 0 ), VFUNCTION(random, 0, 0, 0, randomFunc ), VFUNCTION(randomblob, 1, 0, 0, randomBlob ), FUNCTION(nullif, 2, 0, 1, nullifFunc ), @@ -111722,15 +129217,21 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ), FUNCTION(substr, 2, 0, 0, substrFunc ), FUNCTION(substr, 3, 0, 0, substrFunc ), - AGGREGATE(sum, 1, 0, 0, sumStep, sumFinalize ), - AGGREGATE(total, 1, 0, 0, sumStep, totalFinalize ), - AGGREGATE(avg, 1, 0, 0, sumStep, avgFinalize ), - AGGREGATE2(count, 0, 0, 0, countStep, countFinalize, - SQLITE_FUNC_COUNT ), - AGGREGATE(count, 1, 0, 0, countStep, countFinalize ), - AGGREGATE(group_concat, 1, 0, 0, groupConcatStep, groupConcatFinalize), - AGGREGATE(group_concat, 2, 0, 0, groupConcatStep, groupConcatFinalize), - + FUNCTION(substring, 2, 0, 0, substrFunc ), + FUNCTION(substring, 3, 0, 0, substrFunc ), + WAGGREGATE(sum, 1,0,0, sumStep, sumFinalize, sumFinalize, sumInverse, 0), + WAGGREGATE(total, 1,0,0, sumStep,totalFinalize,totalFinalize,sumInverse, 0), + WAGGREGATE(avg, 1,0,0, sumStep, avgFinalize, avgFinalize, sumInverse, 0), + WAGGREGATE(count, 0,0,0, countStep, + countFinalize, countFinalize, countInverse, + SQLITE_FUNC_COUNT|SQLITE_FUNC_ANYORDER ), + WAGGREGATE(count, 1,0,0, countStep, + countFinalize, countFinalize, countInverse, SQLITE_FUNC_ANYORDER ), + WAGGREGATE(group_concat, 1, 0, 0, groupConcatStep, + groupConcatFinalize, groupConcatValue, groupConcatInverse, 0), + WAGGREGATE(group_concat, 2, 0, 0, groupConcatStep, + groupConcatFinalize, groupConcatValue, groupConcatInverse, 0), + LIKEFUNC(glob, 2, &globInfo, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), #ifdef SQLITE_CASE_SENSITIVE_LIKE LIKEFUNC(like, 2, &likeInfoAlt, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), @@ -111744,15 +129245,52 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ #endif FUNCTION(coalesce, 1, 0, 0, 0 ), FUNCTION(coalesce, 0, 0, 0, 0 ), - FUNCTION2(coalesce, -1, 0, 0, noopFunc, SQLITE_FUNC_COALESCE), +#ifdef SQLITE_ENABLE_MATH_FUNCTIONS + MFUNCTION(ceil, 1, xCeil, ceilingFunc ), + MFUNCTION(ceiling, 1, xCeil, ceilingFunc ), + MFUNCTION(floor, 1, xFloor, ceilingFunc ), +#if SQLITE_HAVE_C99_MATH_FUNCS + MFUNCTION(trunc, 1, trunc, ceilingFunc ), +#endif + FUNCTION(ln, 1, 0, 0, logFunc ), + FUNCTION(log, 1, 1, 0, logFunc ), + FUNCTION(log10, 1, 1, 0, logFunc ), + FUNCTION(log2, 1, 2, 0, logFunc ), + FUNCTION(log, 2, 0, 0, logFunc ), + MFUNCTION(exp, 1, exp, math1Func ), + MFUNCTION(pow, 2, pow, math2Func ), + MFUNCTION(power, 2, pow, math2Func ), + MFUNCTION(mod, 2, fmod, math2Func ), + MFUNCTION(acos, 1, acos, math1Func ), + MFUNCTION(asin, 1, asin, math1Func ), + MFUNCTION(atan, 1, atan, math1Func ), + MFUNCTION(atan2, 2, atan2, math2Func ), + MFUNCTION(cos, 1, cos, math1Func ), + MFUNCTION(sin, 1, sin, math1Func ), + MFUNCTION(tan, 1, tan, math1Func ), + MFUNCTION(cosh, 1, cosh, math1Func ), + MFUNCTION(sinh, 1, sinh, math1Func ), + MFUNCTION(tanh, 1, tanh, math1Func ), +#if SQLITE_HAVE_C99_MATH_FUNCS + MFUNCTION(acosh, 1, acosh, math1Func ), + MFUNCTION(asinh, 1, asinh, math1Func ), + MFUNCTION(atanh, 1, atanh, math1Func ), +#endif + MFUNCTION(sqrt, 1, sqrt, math1Func ), + MFUNCTION(radians, 1, degToRad, math1Func ), + MFUNCTION(degrees, 1, radToDeg, math1Func ), + FUNCTION(pi, 0, 0, 0, piFunc ), +#endif /* SQLITE_ENABLE_MATH_FUNCTIONS */ + FUNCTION(sign, 1, 0, 0, signFunc ), + INLINE_FUNC(coalesce, -1, INLINEFUNC_coalesce, 0 ), + INLINE_FUNC(iif, 3, INLINEFUNC_iif, 0 ), }; #ifndef SQLITE_OMIT_ALTERTABLE sqlite3AlterFunctions(); #endif -#if defined(SQLITE_ENABLE_STAT3) || defined(SQLITE_ENABLE_STAT4) - sqlite3AnalyzeFunctions(); -#endif + sqlite3WindowFunctions(); sqlite3RegisterDateTimeFunctions(); + sqlite3RegisterJsonFunctions(); sqlite3InsertBuiltinFuncs(aBuiltinFunc, ArraySize(aBuiltinFunc)); #if 0 /* Enable to print out how the built-in functions are hashed */ @@ -111764,6 +129302,7 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ for(p=sqlite3BuiltinFunctions.a[i]; p; p=p->u.pHash){ int n = sqlite3Strlen30(p->zName); int h = p->zName[0] + n; + assert( p->funcFlags & SQLITE_FUNC_BUILTIN ); printf(" %s(%d)", p->zName, h); } printf("\n"); @@ -111799,25 +129338,25 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** Foreign keys in SQLite come in two flavours: deferred and immediate. ** If an immediate foreign key constraint is violated, ** SQLITE_CONSTRAINT_FOREIGNKEY is returned and the current -** statement transaction rolled back. If a -** deferred foreign key constraint is violated, no action is taken -** immediately. However if the application attempts to commit the +** statement transaction rolled back. If a +** deferred foreign key constraint is violated, no action is taken +** immediately. However if the application attempts to commit the ** transaction before fixing the constraint violation, the attempt fails. ** ** Deferred constraints are implemented using a simple counter associated -** with the database handle. The counter is set to zero each time a -** database transaction is opened. Each time a statement is executed +** with the database handle. The counter is set to zero each time a +** database transaction is opened. Each time a statement is executed ** that causes a foreign key violation, the counter is incremented. Each ** time a statement is executed that removes an existing violation from ** the database, the counter is decremented. When the transaction is ** committed, the commit fails if the current value of the counter is ** greater than zero. This scheme has two big drawbacks: ** -** * When a commit fails due to a deferred foreign key constraint, +** * When a commit fails due to a deferred foreign key constraint, ** there is no way to tell which foreign constraint is not satisfied, ** or which row it is not satisfied for. ** -** * If the database contains foreign key violations when the +** * If the database contains foreign key violations when the ** transaction is opened, this may cause the mechanism to malfunction. ** ** Despite these problems, this approach is adopted as it seems simpler @@ -111829,26 +129368,26 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** the parent table for a match. If none is found increment the ** constraint counter. ** -** I.2) For each FK for which the table is the parent table, +** I.2) For each FK for which the table is the parent table, ** search the child table for rows that correspond to the new ** row in the parent table. Decrement the counter for each row ** found (as the constraint is now satisfied). ** ** DELETE operations: ** -** D.1) For each FK for which the table is the child table, -** search the parent table for a row that corresponds to the -** deleted row in the child table. If such a row is not found, +** D.1) For each FK for which the table is the child table, +** search the parent table for a row that corresponds to the +** deleted row in the child table. If such a row is not found, ** decrement the counter. ** -** D.2) For each FK for which the table is the parent table, search -** the child table for rows that correspond to the deleted row +** D.2) For each FK for which the table is the parent table, search +** the child table for rows that correspond to the deleted row ** in the parent table. For each found increment the counter. ** ** UPDATE operations: ** ** An UPDATE command requires that all 4 steps above are taken, but only -** for FK constraints for which the affected columns are actually +** for FK constraints for which the affected columns are actually ** modified (values must be compared at runtime). ** ** Note that I.1 and D.1 are very similar operations, as are I.2 and D.2. @@ -111857,10 +129396,10 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** For the purposes of immediate FK constraints, the OR REPLACE conflict ** resolution is considered to delete rows before the new row is inserted. ** If a delete caused by OR REPLACE violates an FK constraint, an exception -** is thrown, even if the FK constraint would be satisfied after the new +** is thrown, even if the FK constraint would be satisfied after the new ** row is inserted. ** -** Immediate constraints are usually handled similarly. The only difference +** Immediate constraints are usually handled similarly. The only difference ** is that the counter used is stored as part of each individual statement ** object (struct Vdbe). If, after the statement has run, its immediate ** constraint counter is greater than zero, @@ -111871,7 +129410,7 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** INSERT violates a foreign key constraint. This is necessary as such ** an INSERT does not open a statement transaction. ** -** TODO: How should dropping a table be handled? How should renaming a +** TODO: How should dropping a table be handled? How should renaming a ** table be handled? ** ** @@ -111882,7 +129421,7 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** for those two operations needs to know whether or not the operation ** requires any FK processing and, if so, which columns of the original ** row are required by the FK processing VDBE code (i.e. if FKs were -** implemented using triggers, which of the old.* columns would be +** implemented using triggers, which of the old.* columns would be ** accessed). No information is required by the code-generator before ** coding an INSERT operation. The functions used by the UPDATE/DELETE ** generation code to query for this information are: @@ -111919,13 +129458,13 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ /* ** A foreign key constraint requires that the key columns in the parent ** table are collectively subject to a UNIQUE or PRIMARY KEY constraint. -** Given that pParent is the parent table for foreign key constraint pFKey, -** search the schema for a unique index on the parent key columns. +** Given that pParent is the parent table for foreign key constraint pFKey, +** search the schema for a unique index on the parent key columns. +** +** If successful, zero is returned. If the parent key is an INTEGER PRIMARY +** KEY column, then output variable *ppIdx is set to NULL. Otherwise, *ppIdx +** is set to point to the unique index. ** -** If successful, zero is returned. If the parent key is an INTEGER PRIMARY -** KEY column, then output variable *ppIdx is set to NULL. Otherwise, *ppIdx -** is set to point to the unique index. -** ** If the parent key consists of a single column (the foreign key constraint ** is not a composite foreign key), output variable *paiCol is set to NULL. ** Otherwise, it is set to point to an allocated array of size N, where @@ -111948,8 +129487,8 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ ** PRIMARY KEY, or ** ** 4) No parent key columns were provided explicitly as part of the -** foreign key definition, and the PRIMARY KEY of the parent table -** consists of a different number of columns to the child key in +** foreign key definition, and the PRIMARY KEY of the parent table +** consists of a different number of columns to the child key in ** the child table. ** ** then non-zero is returned, and a "foreign key mismatch" error loaded @@ -111973,9 +129512,9 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( assert( !paiCol || *paiCol==0 ); assert( pParse ); - /* If this is a non-composite (single column) foreign key, check if it - ** maps to the INTEGER PRIMARY KEY of table pParent. If so, leave *ppIdx - ** and *paiCol set to zero and return early. + /* If this is a non-composite (single column) foreign key, check if it + ** maps to the INTEGER PRIMARY KEY of table pParent. If so, leave *ppIdx + ** and *paiCol set to zero and return early. ** ** Otherwise, for a composite foreign key (more than one column), allocate ** space for the aiCol array (returned via output parameter *paiCol). @@ -111984,14 +129523,16 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( if( nCol==1 ){ /* The FK maps to the IPK if any of the following are true: ** - ** 1) There is an INTEGER PRIMARY KEY column and the FK is implicitly + ** 1) There is an INTEGER PRIMARY KEY column and the FK is implicitly ** mapped to the primary key of table pParent, or ** 2) The FK is explicitly mapped to a column declared as INTEGER ** PRIMARY KEY. */ if( pParent->iPKey>=0 ){ if( !zKey ) return 0; - if( !sqlite3StrICmp(pParent->aCol[pParent->iPKey].zName, zKey) ) return 0; + if( !sqlite3StrICmp(pParent->aCol[pParent->iPKey].zCnName, zKey) ){ + return 0; + } } }else if( paiCol ){ assert( nCol>1 ); @@ -112001,14 +129542,14 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( } for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) && pIdx->pPartIdxWhere==0 ){ + if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) && pIdx->pPartIdxWhere==0 ){ /* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number ** of columns. If each indexed column corresponds to a foreign key ** column of pFKey, then this index is a winner. */ if( zKey==0 ){ - /* If zKey is NULL, then this foreign key is implicitly mapped to - ** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be + /* If zKey is NULL, then this foreign key is implicitly mapped to + ** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be ** identified by the test. */ if( IsPrimaryKeyIndex(pIdx) ){ if( aiCol ){ @@ -112033,11 +129574,11 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( /* If the index uses a collation sequence that is different from ** the default collation sequence for the column, this index is ** unusable. Bail out early in this case. */ - zDfltColl = pParent->aCol[iCol].zColl; + zDfltColl = sqlite3ColumnColl(&pParent->aCol[iCol]); if( !zDfltColl ) zDfltColl = sqlite3StrBINARY; if( sqlite3StrICmp(pIdx->azColl[i], zDfltColl) ) break; - zIdxCol = pParent->aCol[iCol].zName; + zIdxCol = pParent->aCol[iCol].zCnName; for(j=0; jaCol[j].zCol, zIdxCol)==0 ){ if( aiCol ) aiCol[i] = pFKey->aCol[j].iFrom; @@ -112066,15 +129607,15 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( } /* -** This function is called when a row is inserted into or deleted from the -** child table of foreign key constraint pFKey. If an SQL UPDATE is executed +** This function is called when a row is inserted into or deleted from the +** child table of foreign key constraint pFKey. If an SQL UPDATE is executed ** on the child table of pFKey, this function is invoked twice for each row ** affected - once to "delete" the old row, and then again to "insert" the ** new row. ** ** Each time it is called, this function generates VDBE code to locate the -** row in the parent table that corresponds to the row being inserted into -** or deleted from the child table. If the parent row can be found, no +** row in the parent table that corresponds to the row being inserted into +** or deleted from the child table. If the parent row can be found, no ** special action is taken. Otherwise, if the parent row can *not* be ** found in the parent table: ** @@ -112088,7 +129629,7 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( ** ** DELETE deferred Decrement the "deferred constraint counter". ** -** These operations are identified in the comment at the top of this file +** These operations are identified in the comment at the top of this file ** (fkey.c) as "I.1" and "D.1". */ static void fkLookupParent( @@ -112105,27 +129646,27 @@ static void fkLookupParent( int i; /* Iterator variable */ Vdbe *v = sqlite3GetVdbe(pParse); /* Vdbe to add code to */ int iCur = pParse->nTab - 1; /* Cursor number to use */ - int iOk = sqlite3VdbeMakeLabel(v); /* jump here if parent key found */ + int iOk = sqlite3VdbeMakeLabel(pParse); /* jump here if parent key found */ sqlite3VdbeVerifyAbortable(v, (!pFKey->isDeferred && !(pParse->db->flags & SQLITE_DeferFKs) - && !pParse->pToplevel + && !pParse->pToplevel && !pParse->isMultiWrite) ? OE_Abort : OE_Ignore); /* If nIncr is less than zero, then check at runtime if there are any ** outstanding constraints to resolve. If there are not, there is no need ** to check if deleting this row resolves any outstanding violations. ** - ** Check if any of the key columns in the child table row are NULL. If - ** any are, then the constraint is considered satisfied. No need to + ** Check if any of the key columns in the child table row are NULL. If + ** any are, then the constraint is considered satisfied. No need to ** search for a matching row in the parent table. */ if( nIncr<0 ){ sqlite3VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, iOk); VdbeCoverage(v); } for(i=0; inCol; i++){ - int iReg = aiCol[i] + regData + 1; + int iReg = sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[i]) + regData + 1; sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iOk); VdbeCoverage(v); } @@ -112135,16 +129676,17 @@ static void fkLookupParent( ** column of the parent table (table pTab). */ int iMustBeInt; /* Address of MustBeInt instruction */ int regTemp = sqlite3GetTempReg(pParse); - - /* Invoke MustBeInt to coerce the child key value to an integer (i.e. + + /* Invoke MustBeInt to coerce the child key value to an integer (i.e. ** apply the affinity of the parent key). If this fails, then there ** is no matching parent key. Before using MustBeInt, make a copy of ** the value. Otherwise, the value inserted into the child key column ** will have INTEGER affinity applied to it, which may not be correct. */ - sqlite3VdbeAddOp2(v, OP_SCopy, aiCol[0]+1+regData, regTemp); + sqlite3VdbeAddOp2(v, OP_SCopy, + sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[0])+1+regData, regTemp); iMustBeInt = sqlite3VdbeAddOp2(v, OP_MustBeInt, regTemp, 0); VdbeCoverage(v); - + /* If the parent table is the same as the child table, and we are about ** to increment the constraint-counter (i.e. this is an INSERT operation), ** then check if the row being inserted matches itself. If so, do not @@ -112153,7 +129695,7 @@ static void fkLookupParent( sqlite3VdbeAddOp3(v, OP_Eq, regData, iOk, regTemp); VdbeCoverage(v); sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); } - + sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead); sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp); VdbeCoverage(v); sqlite3VdbeGoto(v, iOk); @@ -112163,20 +129705,21 @@ static void fkLookupParent( }else{ int nCol = pFKey->nCol; int regTemp = sqlite3GetTempRange(pParse, nCol); - int regRec = sqlite3GetTempReg(pParse); - + sqlite3VdbeAddOp3(v, OP_OpenRead, iCur, pIdx->tnum, iDb); sqlite3VdbeSetP4KeyInfo(pParse, pIdx); for(i=0; ipFrom, aiCol[i])+1+regData, + regTemp+i); } - + /* If the parent table is the same as the child table, and we are about ** to increment the constraint-counter (i.e. this is an INSERT operation), ** then check if the row being inserted matches itself. If so, do not - ** increment the constraint-counter. + ** increment the constraint-counter. ** - ** If any of the parent-key values are NULL, then the row cannot match + ** If any of the parent-key values are NULL, then the row cannot match ** itself. So set JUMPIFNULL to make sure we do the OP_Found if any ** of the parent-key values are NULL (at this point it is known that ** none of the child key values are). @@ -112184,8 +129727,11 @@ static void fkLookupParent( if( pTab==pFKey->pFrom && nIncr==1 ){ int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1; for(i=0; iaiColumn[i]+1+regData; + int iChild = sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[i]) + +1+regData; + int iParent = 1+regData; + iParent += sqlite3TableColumnToStorage(pIdx->pTable, + pIdx->aiColumn[i]); assert( pIdx->aiColumn[i]>=0 ); assert( aiCol[i]!=pTab->iPKey ); if( pIdx->aiColumn[i]==pTab->iPKey ){ @@ -112197,19 +129743,18 @@ static void fkLookupParent( } sqlite3VdbeGoto(v, iOk); } - - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTemp, nCol, regRec, + + sqlite3VdbeAddOp4(v, OP_Affinity, regTemp, nCol, 0, sqlite3IndexAffinityStr(pParse->db,pIdx), nCol); - sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0); VdbeCoverage(v); - - sqlite3ReleaseTempReg(pParse, regRec); + sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regTemp, nCol); + VdbeCoverage(v); sqlite3ReleaseTempRange(pParse, regTemp, nCol); } } if( !pFKey->isDeferred && !(pParse->db->flags & SQLITE_DeferFKs) - && !pParse->pToplevel - && !pParse->isMultiWrite + && !pParse->pToplevel + && !pParse->isMultiWrite ){ /* Special case: If this is an INSERT statement that will insert exactly ** one row into the table, raise a constraint immediately instead of @@ -112253,14 +129798,14 @@ static Expr *exprTableRegister( if( pExpr ){ if( iCol>=0 && iCol!=pTab->iPKey ){ pCol = &pTab->aCol[iCol]; - pExpr->iTable = regBase + iCol + 1; - pExpr->affinity = pCol->affinity; - zColl = pCol->zColl; + pExpr->iTable = regBase + sqlite3TableColumnToStorage(pTab,iCol) + 1; + pExpr->affExpr = pCol->affinity; + zColl = sqlite3ColumnColl(pCol); if( zColl==0 ) zColl = db->pDfltColl->zName; pExpr = sqlite3ExprAddCollateString(pParse, pExpr, zColl); }else{ pExpr->iTable = regBase; - pExpr->affinity = SQLITE_AFF_INTEGER; + pExpr->affExpr = SQLITE_AFF_INTEGER; } } return pExpr; @@ -112278,7 +129823,8 @@ static Expr *exprTableColumn( ){ Expr *pExpr = sqlite3Expr(db, TK_COLUMN, 0); if( pExpr ){ - pExpr->pTab = pTab; + assert( ExprUseYTab(pExpr) ); + pExpr->y.pTab = pTab; pExpr->iTable = iCursor; pExpr->iColumn = iCol; } @@ -112287,7 +129833,7 @@ static Expr *exprTableColumn( /* ** This function is called to generate code executed when a row is deleted -** from the parent table of foreign key constraint pFKey and, if pFKey is +** from the parent table of foreign key constraint pFKey and, if pFKey is ** deferred, when a row is inserted into the same table. When generating ** code for an SQL UPDATE operation, this function may be called twice - ** once to "delete" the old row and once to "insert" the new row. @@ -112303,18 +129849,14 @@ static Expr *exprTableColumn( ** Operation | FK type | Action taken ** -------------------------------------------------------------------------- ** DELETE immediate Increment the "immediate constraint counter". -** Or, if the ON (UPDATE|DELETE) action is RESTRICT, -** throw a "FOREIGN KEY constraint failed" exception. ** ** INSERT immediate Decrement the "immediate constraint counter". ** ** DELETE deferred Increment the "deferred constraint counter". -** Or, if the ON (UPDATE|DELETE) action is RESTRICT, -** throw a "FOREIGN KEY constraint failed" exception. ** ** INSERT deferred Decrement the "deferred constraint counter". ** -** These operations are identified in the comment at the top of this file +** These operations are identified in the comment at the top of this file ** (fkey.c) as "I.2" and "D.2". */ static void fkScanChildren( @@ -112357,17 +129899,17 @@ static void fkScanChildren( Expr *pLeft; /* Value from parent table row */ Expr *pRight; /* Column ref to child table */ Expr *pEq; /* Expression (pLeft = pRight) */ - i16 iCol; /* Index of column in child table */ + i16 iCol; /* Index of column in child table */ const char *zCol; /* Name of column in child table */ iCol = pIdx ? pIdx->aiColumn[i] : -1; pLeft = exprTableRegister(pParse, pTab, regData, iCol); iCol = aiCol ? aiCol[i] : pFKey->aCol[0].iFrom; assert( iCol>=0 ); - zCol = pFKey->pFrom->aCol[iCol].zName; + zCol = pFKey->pFrom->aCol[iCol].zCnName; pRight = sqlite3Expr(db, TK_ID, zCol); pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight); - pWhere = sqlite3ExprAnd(db, pWhere, pEq); + pWhere = sqlite3ExprAnd(pParse, pWhere, pEq); } /* If the child table is the same as the parent table, then add terms @@ -112378,8 +129920,11 @@ static void fkScanChildren( ** NOT( $current_a==a AND $current_b==b AND ... ) ** ** The first form is used for rowid tables. The second form is used - ** for WITHOUT ROWID tables. In the second form, the primary key is - ** (a,b,...) + ** for WITHOUT ROWID tables. In the second form, the *parent* key is + ** (a,b,...). Either the parent or primary key could be used to + ** uniquely identify the current row, but the parent key is more convenient + ** as the required values have already been loaded into registers + ** by the caller. */ if( pTab==pFKey->pFrom && nIncr>0 ){ Expr *pNe; /* Expression (pLeft != pRight) */ @@ -112391,19 +129936,18 @@ static void fkScanChildren( pNe = sqlite3PExpr(pParse, TK_NE, pLeft, pRight); }else{ Expr *pEq, *pAll = 0; - Index *pPk = sqlite3PrimaryKeyIndex(pTab); assert( pIdx!=0 ); - for(i=0; inKeyCol; i++){ + for(i=0; inKeyCol; i++){ i16 iCol = pIdx->aiColumn[i]; assert( iCol>=0 ); pLeft = exprTableRegister(pParse, pTab, regData, iCol); - pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, iCol); - pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight); - pAll = sqlite3ExprAnd(db, pAll, pEq); + pRight = sqlite3Expr(db, TK_ID, pTab->aCol[iCol].zCnName); + pEq = sqlite3PExpr(pParse, TK_IS, pLeft, pRight); + pAll = sqlite3ExprAnd(pParse, pAll, pEq); } pNe = sqlite3PExpr(pParse, TK_NOT, pAll, 0); } - pWhere = sqlite3ExprAnd(db, pWhere, pNe); + pWhere = sqlite3ExprAnd(pParse, pWhere, pNe); } /* Resolve the references in the WHERE clause. */ @@ -112416,7 +129960,7 @@ static void fkScanChildren( ** clause. For each row found, increment either the deferred or immediate ** foreign key constraint counter. */ if( pParse->nErr==0 ){ - pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0); + pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0, 0); sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr); if( pWInfo ){ sqlite3WhereEnd(pWInfo); @@ -112426,7 +129970,7 @@ static void fkScanChildren( /* Clean up the WHERE clause constructed above. */ sqlite3ExprDelete(db, pWhere); if( iFkIfZero ){ - sqlite3VdbeJumpHere(v, iFkIfZero); + sqlite3VdbeJumpHereOrPopInst(v, iFkIfZero); } } @@ -112449,7 +129993,7 @@ SQLITE_PRIVATE FKey *sqlite3FkReferences(Table *pTab){ } /* -** The second argument is a Trigger structure allocated by the +** The second argument is a Trigger structure allocated by the ** fkActionTrigger() routine. This function deletes the Trigger structure ** and all of its sub-components. ** @@ -112467,6 +130011,25 @@ static void fkTriggerDelete(sqlite3 *dbMem, Trigger *p){ } } +/* +** Clear the apTrigger[] cache of CASCADE triggers for all foreign keys +** in a particular database. This needs to happen when the schema +** changes. +*/ +SQLITE_PRIVATE void sqlite3FkClearTriggerCache(sqlite3 *db, int iDb){ + HashElem *k; + Hash *pHash = &db->aDb[iDb].pSchema->tblHash; + for(k=sqliteHashFirst(pHash); k; k=sqliteHashNext(k)){ + Table *pTab = sqliteHashData(k); + FKey *pFKey; + if( !IsOrdinaryTable(pTab) ) continue; + for(pFKey=pTab->u.tab.pFKey; pFKey; pFKey=pFKey->pNextFrom){ + fkTriggerDelete(db, pFKey->apTrigger[0]); pFKey->apTrigger[0] = 0; + fkTriggerDelete(db, pFKey->apTrigger[1]); pFKey->apTrigger[1] = 0; + } + } +} + /* ** This function is called to generate code that runs when table pTab is ** being dropped from the database. The SrcList passed as the second argument @@ -112477,7 +130040,7 @@ static void fkTriggerDelete(sqlite3 *dbMem, Trigger *p){ ** ** (a) The table is the parent table of a FK constraint, or ** (b) The table is the child table of a deferred FK constraint and it is -** determined at runtime that there are outstanding deferred FK +** determined at runtime that there are outstanding deferred FK ** constraint violations in the database, ** ** then the equivalent of "DELETE FROM " is executed before dropping @@ -112486,23 +130049,24 @@ static void fkTriggerDelete(sqlite3 *dbMem, Trigger *p){ */ SQLITE_PRIVATE void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTab){ sqlite3 *db = pParse->db; - if( (db->flags&SQLITE_ForeignKeys) && !IsVirtual(pTab) && !pTab->pSelect ){ + if( (db->flags&SQLITE_ForeignKeys) && IsOrdinaryTable(pTab) ){ int iSkip = 0; Vdbe *v = sqlite3GetVdbe(pParse); assert( v ); /* VDBE has already been allocated */ + assert( IsOrdinaryTable(pTab) ); if( sqlite3FkReferences(pTab)==0 ){ /* Search for a deferred foreign key constraint for which this table - ** is the child table. If one cannot be found, return without + ** is the child table. If one cannot be found, return without ** generating any VDBE code. If one can be found, then jump over ** the entire DELETE if there are no outstanding deferred constraints ** when this statement is run. */ FKey *p; - for(p=pTab->pFKey; p; p=p->pNextFrom){ + for(p=pTab->u.tab.pFKey; p; p=p->pNextFrom){ if( p->isDeferred || (db->flags & SQLITE_DeferFKs) ) break; } if( !p ) return; - iSkip = sqlite3VdbeMakeLabel(v); + iSkip = sqlite3VdbeMakeLabel(pParse); sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); VdbeCoverage(v); } @@ -112510,10 +130074,10 @@ SQLITE_PRIVATE void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTa sqlite3DeleteFrom(pParse, sqlite3SrcListDup(db, pName, 0), 0, 0, 0); pParse->disableTriggers = 0; - /* If the DELETE has generated immediate foreign key constraint + /* If the DELETE has generated immediate foreign key constraint ** violations, halt the VDBE and return an error at this point, before ** any modifications to the schema are made. This is because statement - ** transactions are not able to rollback schema changes. + ** transactions are not able to rollback schema changes. ** ** If the SQLITE_DeferFKs flag is set, then this is not required, as ** the statement transaction will not be rolled back even if FK @@ -112537,7 +130101,7 @@ SQLITE_PRIVATE void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTa /* ** The second argument points to an FKey object representing a foreign key ** for which pTab is the child table. An UPDATE statement against pTab -** is currently being processed. For each column of the table that is +** is currently being processed. For each column of the table that is ** actually updated, the corresponding element in the aChange[] array ** is zero or greater (if a column is unmodified the corresponding element ** is set to -1). If the rowid column is modified by the UPDATE statement @@ -112564,7 +130128,7 @@ static int fkChildIsModified( /* ** The second argument points to an FKey object representing a foreign key ** for which pTab is the parent table. An UPDATE statement against pTab -** is currently being processed. For each column of the table that is +** is currently being processed. For each column of the table that is ** actually updated, the corresponding element in the aChange[] array ** is zero or greater (if a column is unmodified the corresponding element ** is set to -1). If the rowid column is modified by the UPDATE statement @@ -112574,9 +130138,9 @@ static int fkChildIsModified( ** parent key for FK constraint *p are modified. */ static int fkParentIsModified( - Table *pTab, - FKey *p, - int *aChange, + Table *pTab, + FKey *p, + int *aChange, int bChngRowid ){ int i; @@ -112587,7 +130151,7 @@ static int fkParentIsModified( if( aChange[iKey]>=0 || (iKey==pTab->iPKey && bChngRowid) ){ Column *pCol = &pTab->aCol[iKey]; if( zKey ){ - if( 0==sqlite3StrICmp(pCol->zName, zKey) ) return 1; + if( 0==sqlite3StrICmp(pCol->zCnName, zKey) ) return 1; }else if( pCol->colFlags & COLFLAG_PRIMKEY ){ return 1; } @@ -112617,7 +130181,7 @@ static int isSetNullAction(Parse *pParse, FKey *pFKey){ /* ** This function is called when inserting, deleting or updating a row of -** table pTab to generate VDBE code to perform foreign key constraint +** table pTab to generate VDBE code to perform foreign key constraint ** processing for the operation. ** ** For a DELETE operation, parameter regOld is passed the index of the @@ -112633,11 +130197,11 @@ static int isSetNullAction(Parse *pParse, FKey *pFKey){ ** For an UPDATE operation, this function is called twice. Once before ** the original record is deleted from the table using the calling convention ** described for DELETE. Then again after the original record is deleted -** but before the new record is inserted using the INSERT convention. +** but before the new record is inserted using the INSERT convention. */ SQLITE_PRIVATE void sqlite3FkCheck( Parse *pParse, /* Parse context */ - Table *pTab, /* Row is being deleted from this table */ + Table *pTab, /* Row is being deleted from this table */ int regOld, /* Previous row data is stored here */ int regNew, /* New row data is stored here */ int *aChange, /* Array indicating UPDATEd columns (or 0) */ @@ -112654,13 +130218,14 @@ SQLITE_PRIVATE void sqlite3FkCheck( /* If foreign-keys are disabled, this function is a no-op. */ if( (db->flags&SQLITE_ForeignKeys)==0 ) return; + if( !IsOrdinaryTable(pTab) ) return; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); zDb = db->aDb[iDb].zDbSName; /* Loop through all the foreign key constraints for which pTab is the ** child table (the table that the foreign key definition is part of). */ - for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){ + for(pFKey=pTab->u.tab.pFKey; pFKey; pFKey=pFKey->pNextFrom){ Table *pTo; /* Parent table of foreign key pFKey */ Index *pIdx = 0; /* Index on key columns in pTo */ int *aiFree = 0; @@ -112669,16 +130234,16 @@ SQLITE_PRIVATE void sqlite3FkCheck( int i; int bIgnore = 0; - if( aChange + if( aChange && sqlite3_stricmp(pTab->zName, pFKey->zTo)!=0 - && fkChildIsModified(pTab, pFKey, aChange, bChngRowid)==0 + && fkChildIsModified(pTab, pFKey, aChange, bChngRowid)==0 ){ continue; } - /* Find the parent table of this foreign key. Also find a unique index - ** on the parent key columns in the parent table. If either of these - ** schema items cannot be located, set an error in pParse and return + /* Find the parent table of this foreign key. Also find a unique index + ** on the parent key columns in the parent table. If either of these + ** schema items cannot be located, set an error in pParse and return ** early. */ if( pParse->disableTriggers ){ pTo = sqlite3FindTable(db, pFKey->zTo, zDb); @@ -112699,7 +130264,9 @@ SQLITE_PRIVATE void sqlite3FkCheck( Vdbe *v = sqlite3GetVdbe(pParse); int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1; for(i=0; inCol; i++){ - int iReg = pFKey->aCol[i].iFrom + regOld + 1; + int iFromCol, iReg; + iFromCol = pFKey->aCol[i].iFrom; + iReg = sqlite3TableColumnToStorage(pFKey->pFrom,iFromCol) + regOld+1; sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump); VdbeCoverage(v); } sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1); @@ -112720,36 +130287,36 @@ SQLITE_PRIVATE void sqlite3FkCheck( } assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); #ifndef SQLITE_OMIT_AUTHORIZATION - /* Request permission to read the parent key columns. If the + /* Request permission to read the parent key columns. If the ** authorization callback returns SQLITE_IGNORE, behave as if any ** values read from the parent table are NULL. */ if( db->xAuth ){ int rcauth; - char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zName; + char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zCnName; rcauth = sqlite3AuthReadCol(pParse, pTo->zName, zCol, iDb); bIgnore = (rcauth==SQLITE_IGNORE); } #endif } - /* Take a shared-cache advisory read-lock on the parent table. Allocate - ** a cursor to use to search the unique index on the parent key columns + /* Take a shared-cache advisory read-lock on the parent table. Allocate + ** a cursor to use to search the unique index on the parent key columns ** in the parent table. */ sqlite3TableLock(pParse, iDb, pTo->tnum, 0, pTo->zName); pParse->nTab++; if( regOld!=0 ){ /* A row is being removed from the child table. Search for the parent. - ** If the parent does not exist, removing the child row resolves an + ** If the parent does not exist, removing the child row resolves an ** outstanding foreign key constraint violation. */ fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1, bIgnore); } if( regNew!=0 && !isSetNullAction(pParse, pFKey) ){ /* A row is being added to the child table. If a parent row cannot - ** be found, adding the child row has violated the FK constraint. + ** be found, adding the child row has violated the FK constraint. ** ** If this operation is being performed as part of a trigger program - ** that is actually a "SET NULL" action belonging to this very + ** that is actually a "SET NULL" action belonging to this very ** foreign key, then omit this scan altogether. As all child key ** values are guaranteed to be NULL, it is not possible for adding ** this row to cause an FK violation. */ @@ -112770,8 +130337,8 @@ SQLITE_PRIVATE void sqlite3FkCheck( continue; } - if( !pFKey->isDeferred && !(db->flags & SQLITE_DeferFKs) - && !pParse->pToplevel && !pParse->isMultiWrite + if( !pFKey->isDeferred && !(db->flags & SQLITE_DeferFKs) + && !pParse->pToplevel && !pParse->isMultiWrite ){ assert( regOld==0 && regNew!=0 ); /* Inserting a single row into a parent table cannot cause (or fix) @@ -112787,14 +130354,14 @@ SQLITE_PRIVATE void sqlite3FkCheck( /* Create a SrcList structure containing the child table. We need the ** child table as a SrcList for sqlite3WhereBegin() */ - pSrc = sqlite3SrcListAppend(db, 0, 0, 0); + pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0); if( pSrc ){ - struct SrcList_item *pItem = pSrc->a; + SrcItem *pItem = pSrc->a; pItem->pTab = pFKey->pFrom; pItem->zName = pFKey->pFrom->zName; pItem->pTab->nTabRef++; pItem->iCursor = pParse->nTab++; - + if( regNew!=0 ){ fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regNew, -1); } @@ -112813,10 +130380,10 @@ SQLITE_PRIVATE void sqlite3FkCheck( ** ** Note 2: At first glance it may seem like SQLite could simply omit ** all OP_FkCounter related scans when either CASCADE or SET NULL - ** applies. The trouble starts if the CASCADE or SET NULL action - ** trigger causes other triggers or action rules attached to the + ** applies. The trouble starts if the CASCADE or SET NULL action + ** trigger causes other triggers or action rules attached to the ** child table to fire. In these cases the fk constraint counters - ** might be set incorrectly if any OP_FkCounter related scans are + ** might be set incorrectly if any OP_FkCounter related scans are ** omitted. */ if( !pFKey->isDeferred && eAction!=OE_Cascade && eAction!=OE_SetNull ){ sqlite3MayAbort(pParse); @@ -112832,7 +130399,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( #define COLUMN_MASK(x) (((x)>31) ? 0xffffffff : ((u32)1<<(x))) /* -** This function is called before generating code to update or delete a +** This function is called before generating code to update or delete a ** row contained in table pTab. */ SQLITE_PRIVATE u32 sqlite3FkOldmask( @@ -112840,10 +130407,10 @@ SQLITE_PRIVATE u32 sqlite3FkOldmask( Table *pTab /* Table being modified */ ){ u32 mask = 0; - if( pParse->db->flags&SQLITE_ForeignKeys ){ + if( pParse->db->flags&SQLITE_ForeignKeys && IsOrdinaryTable(pTab) ){ FKey *p; int i; - for(p=pTab->pFKey; p; p=p->pNextFrom){ + for(p=pTab->u.tab.pFKey; p; p=p->pNextFrom){ for(i=0; inCol; i++) mask |= COLUMN_MASK(p->aCol[i].iFrom); } for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ @@ -112862,22 +130429,24 @@ SQLITE_PRIVATE u32 sqlite3FkOldmask( /* -** This function is called before generating code to update or delete a +** This function is called before generating code to update or delete a ** row contained in table pTab. If the operation is a DELETE, then ** parameter aChange is passed a NULL value. For an UPDATE, aChange points ** to an array of size N, where N is the number of columns in table pTab. -** If the i'th column is not modified by the UPDATE, then the corresponding +** If the i'th column is not modified by the UPDATE, then the corresponding ** entry in the aChange[] array is set to -1. If the column is modified, ** the value is 0 or greater. Parameter chngRowid is set to true if the ** UPDATE statement modifies the rowid fields of the table. ** ** If any foreign key processing will be required, this function returns -** non-zero. If there is no foreign key related processing, this function +** non-zero. If there is no foreign key related processing, this function ** returns zero. ** ** For an UPDATE, this function returns 2 if: ** -** * There are any FKs for which pTab is the child and the parent table, or +** * There are any FKs for which pTab is the child and the parent table +** and any FK processing at all is required (even of a different FK), or +** ** * the UPDATE modifies one or more parent keys for which the action is ** not "NO ACTION" (i.e. is CASCADE, SET DEFAULT or SET NULL). ** @@ -112889,23 +130458,24 @@ SQLITE_PRIVATE int sqlite3FkRequired( int *aChange, /* Non-NULL for UPDATE operations */ int chngRowid /* True for UPDATE that affects rowid */ ){ - int eRet = 0; - if( pParse->db->flags&SQLITE_ForeignKeys ){ + int eRet = 1; /* Value to return if bHaveFK is true */ + int bHaveFK = 0; /* If FK processing is required */ + if( pParse->db->flags&SQLITE_ForeignKeys && IsOrdinaryTable(pTab) ){ if( !aChange ){ - /* A DELETE operation. Foreign key processing is required if the - ** table in question is either the child or parent table for any + /* A DELETE operation. Foreign key processing is required if the + ** table in question is either the child or parent table for any ** foreign key constraint. */ - eRet = (sqlite3FkReferences(pTab) || pTab->pFKey); + bHaveFK = (sqlite3FkReferences(pTab) || pTab->u.tab.pFKey); }else{ /* This is an UPDATE. Foreign key processing is only required if the ** operation modifies one or more child or parent key columns. */ FKey *p; /* Check if any child key columns are being modified. */ - for(p=pTab->pFKey; p; p=p->pNextFrom){ - if( 0==sqlite3_stricmp(pTab->zName, p->zTo) ) return 2; + for(p=pTab->u.tab.pFKey; p; p=p->pNextFrom){ if( fkChildIsModified(pTab, p, aChange, chngRowid) ){ - eRet = 1; + if( 0==sqlite3_stricmp(pTab->zName, p->zTo) ) eRet = 2; + bHaveFK = 1; } } @@ -112913,16 +130483,16 @@ SQLITE_PRIVATE int sqlite3FkRequired( for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ if( fkParentIsModified(pTab, p, aChange, chngRowid) ){ if( p->aAction[1]!=OE_None ) return 2; - eRet = 1; + bHaveFK = 1; } } } } - return eRet; + return bHaveFK ? eRet : 0; } /* -** This function is called when an UPDATE or DELETE operation is being +** This function is called when an UPDATE or DELETE operation is being ** compiled on table pTab, which is the parent table of foreign-key pFKey. ** If the current operation is an UPDATE, then the pChanges parameter is ** passed a pointer to the list of columns being modified. If it is a @@ -112930,11 +130500,11 @@ SQLITE_PRIVATE int sqlite3FkRequired( ** ** It returns a pointer to a Trigger structure containing a trigger ** equivalent to the ON UPDATE or ON DELETE action specified by pFKey. -** If the action is "NO ACTION" or "RESTRICT", then a NULL pointer is -** returned (these actions require no special handling by the triggers -** sub-system, code for them is created by fkScanChildren()). +** If the action is "NO ACTION" then a NULL pointer is returned (these actions +** require no special handling by the triggers sub-system, code for them is +** created by fkScanChildren()). ** -** For example, if pFKey is the foreign key and pTab is table "p" in +** For example, if pFKey is the foreign key and pTab is table "p" in ** the following schema: ** ** CREATE TABLE p(pk PRIMARY KEY); @@ -112947,7 +130517,7 @@ SQLITE_PRIVATE int sqlite3FkRequired( ** END; ** ** The returned pointer is cached as part of the foreign key object. It -** is eventually freed along with the rest of the foreign key object by +** is eventually freed along with the rest of the foreign key object by ** sqlite3FkDelete(). */ static Trigger *fkActionTrigger( @@ -112995,20 +130565,20 @@ static Trigger *fkActionTrigger( assert( pIdx!=0 || (pTab->iPKey>=0 && pTab->iPKeynCol) ); assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); sqlite3TokenInit(&tToCol, - pTab->aCol[pIdx ? pIdx->aiColumn[i] : pTab->iPKey].zName); - sqlite3TokenInit(&tFromCol, pFKey->pFrom->aCol[iFromCol].zName); + pTab->aCol[pIdx ? pIdx->aiColumn[i] : pTab->iPKey].zCnName); + sqlite3TokenInit(&tFromCol, pFKey->pFrom->aCol[iFromCol].zCnName); /* Create the expression "OLD.zToCol = zFromCol". It is important ** that the "OLD.zToCol" term is on the LHS of the = operator, so ** that the affinity and collation sequence associated with the ** parent table are used for the comparison. */ pEq = sqlite3PExpr(pParse, TK_EQ, - sqlite3PExpr(pParse, TK_DOT, + sqlite3PExpr(pParse, TK_DOT, sqlite3ExprAlloc(db, TK_ID, &tOld, 0), sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)), sqlite3ExprAlloc(db, TK_ID, &tFromCol, 0) ); - pWhere = sqlite3ExprAnd(db, pWhere, pEq); + pWhere = sqlite3ExprAnd(pParse, pWhere, pEq); /* For ON UPDATE, construct the next term of the WHEN clause. ** The final WHEN clause will be like this: @@ -113017,24 +130587,32 @@ static Trigger *fkActionTrigger( */ if( pChanges ){ pEq = sqlite3PExpr(pParse, TK_IS, - sqlite3PExpr(pParse, TK_DOT, + sqlite3PExpr(pParse, TK_DOT, sqlite3ExprAlloc(db, TK_ID, &tOld, 0), sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)), - sqlite3PExpr(pParse, TK_DOT, + sqlite3PExpr(pParse, TK_DOT, sqlite3ExprAlloc(db, TK_ID, &tNew, 0), sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)) ); - pWhen = sqlite3ExprAnd(db, pWhen, pEq); + pWhen = sqlite3ExprAnd(pParse, pWhen, pEq); } - + if( action!=OE_Restrict && (action!=OE_Cascade || pChanges) ){ Expr *pNew; if( action==OE_Cascade ){ - pNew = sqlite3PExpr(pParse, TK_DOT, + pNew = sqlite3PExpr(pParse, TK_DOT, sqlite3ExprAlloc(db, TK_ID, &tNew, 0), sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)); }else if( action==OE_SetDflt ){ - Expr *pDflt = pFKey->pFrom->aCol[iFromCol].pDflt; + Column *pCol = pFKey->pFrom->aCol + iFromCol; + Expr *pDflt; + if( pCol->colFlags & COLFLAG_GENERATED ){ + testcase( pCol->colFlags & COLFLAG_VIRTUAL ); + testcase( pCol->colFlags & COLFLAG_STORED ); + pDflt = 0; + }else{ + pDflt = sqlite3ColumnExpr(pFKey->pFrom, pCol); + } if( pDflt ){ pNew = sqlite3ExprDup(db, pDflt, 0); }else{ @@ -113053,18 +130631,23 @@ static Trigger *fkActionTrigger( nFrom = sqlite3Strlen30(zFrom); if( action==OE_Restrict ){ - Token tFrom; - Expr *pRaise; + int iDb = sqlite3SchemaToIndex(db, pTab->pSchema); + SrcList *pSrc; + Expr *pRaise; - tFrom.z = zFrom; - tFrom.n = nFrom; pRaise = sqlite3Expr(db, TK_RAISE, "FOREIGN KEY constraint failed"); if( pRaise ){ - pRaise->affinity = OE_Abort; + pRaise->affExpr = OE_Abort; } - pSelect = sqlite3SelectNew(pParse, + pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0); + if( pSrc ){ + assert( pSrc->nSrc==1 ); + pSrc->a[0].zName = sqlite3DbStrDup(db, zFrom); + pSrc->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName); + } + pSelect = sqlite3SelectNew(pParse, sqlite3ExprListAppend(pParse, 0, pRaise), - sqlite3SrcListAppend(db, 0, &tFrom, 0), + pSrc, pWhere, 0, 0, 0, 0, 0 ); @@ -113072,9 +130655,9 @@ static Trigger *fkActionTrigger( } /* Disable lookaside memory allocation */ - db->lookaside.bDisable++; + DisableLookaside; - pTrigger = (Trigger *)sqlite3DbMallocZero(db, + pTrigger = (Trigger *)sqlite3DbMallocZero(db, sizeof(Trigger) + /* struct Trigger */ sizeof(TriggerStep) + /* Single step in trigger program */ nFrom + 1 /* Space for pStep->zTarget */ @@ -113083,7 +130666,7 @@ static Trigger *fkActionTrigger( pStep = pTrigger->step_list = (TriggerStep *)&pTrigger[1]; pStep->zTarget = (char *)&pStep[1]; memcpy((char *)pStep->zTarget, zFrom, nFrom); - + pStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); pStep->pExprList = sqlite3ExprListDup(db, pList, EXPRDUP_REDUCE); pStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); @@ -113094,7 +130677,7 @@ static Trigger *fkActionTrigger( } /* Re-enable the lookaside buffer, if it was disabled earlier. */ - db->lookaside.bDisable--; + EnableLookaside; sqlite3ExprDelete(db, pWhere); sqlite3ExprDelete(db, pWhen); @@ -113105,16 +130688,18 @@ static Trigger *fkActionTrigger( return 0; } assert( pStep!=0 ); + assert( pTrigger!=0 ); switch( action ){ case OE_Restrict: - pStep->op = TK_SELECT; + pStep->op = TK_SELECT; break; - case OE_Cascade: - if( !pChanges ){ - pStep->op = TK_DELETE; - break; + case OE_Cascade: + if( !pChanges ){ + pStep->op = TK_DELETE; + break; } + /* no break */ deliberate_fall_through default: pStep->op = TK_UPDATE; } @@ -113140,9 +130725,9 @@ SQLITE_PRIVATE void sqlite3FkActions( int *aChange, /* Array indicating UPDATEd columns (or 0) */ int bChngRowid /* True if rowid is UPDATEd */ ){ - /* If foreign-key support is enabled, iterate through all FKs that - ** refer to table pTab. If there is an action associated with the FK - ** for this operation (either update or delete), invoke the associated + /* If foreign-key support is enabled, iterate through all FKs that + ** refer to table pTab. If there is an action associated with the FK + ** for this operation (either update or delete), invoke the associated ** trigger sub-program. */ if( pParse->db->flags&SQLITE_ForeignKeys ){ FKey *pFKey; /* Iterator variable */ @@ -113168,18 +130753,18 @@ SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *db, Table *pTab){ FKey *pFKey; /* Iterator variable */ FKey *pNext; /* Copy of pFKey->pNextFrom */ - assert( db==0 || IsVirtual(pTab) - || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) ); - for(pFKey=pTab->pFKey; pFKey; pFKey=pNext){ + assert( IsOrdinaryTable(pTab) ); + assert( db!=0 ); + for(pFKey=pTab->u.tab.pFKey; pFKey; pFKey=pNext){ + assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) ); /* Remove the FK from the fkeyHash hash table. */ - if( !db || db->pnBytesFreed==0 ){ + if( db->pnBytesFreed==0 ){ if( pFKey->pPrevTo ){ pFKey->pPrevTo->pNextTo = pFKey->pNextTo; }else{ - void *p = (void *)pFKey->pNextTo; - const char *z = (p ? pFKey->pNextTo->zTo : pFKey->zTo); - sqlite3HashInsert(&pTab->pSchema->fkeyHash, z, p); + const char *z = (pFKey->pNextTo ? pFKey->pNextTo->zTo : pFKey->zTo); + sqlite3HashInsert(&pTab->pSchema->fkeyHash, z, pFKey->pNextTo); } if( pFKey->pNextTo ){ pFKey->pNextTo->pPrevTo = pFKey->pPrevTo; @@ -113222,7 +130807,7 @@ SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *db, Table *pTab){ /* #include "sqliteInt.h" */ /* -** Generate code that will +** Generate code that will ** ** (1) acquire a lock for table pTab then ** (2) open pTab as cursor iCur. @@ -113239,17 +130824,20 @@ SQLITE_PRIVATE void sqlite3OpenTable( ){ Vdbe *v; assert( !IsVirtual(pTab) ); - v = sqlite3GetVdbe(pParse); + assert( pParse->pVdbe!=0 ); + v = pParse->pVdbe; assert( opcode==OP_OpenWrite || opcode==OP_OpenRead ); - sqlite3TableLock(pParse, iDb, pTab->tnum, - (opcode==OP_OpenWrite)?1:0, pTab->zName); + if( !pParse->db->noSharedCache ){ + sqlite3TableLock(pParse, iDb, pTab->tnum, + (opcode==OP_OpenWrite)?1:0, pTab->zName); + } if( HasRowid(pTab) ){ - sqlite3VdbeAddOp4Int(v, opcode, iCur, pTab->tnum, iDb, pTab->nCol); + sqlite3VdbeAddOp4Int(v, opcode, iCur, pTab->tnum, iDb, pTab->nNVCol); VdbeComment((v, "%s", pTab->zName)); }else{ Index *pPk = sqlite3PrimaryKeyIndex(pTab); assert( pPk!=0 ); - assert( pPk->tnum==pTab->tnum ); + assert( pPk->tnum==pTab->tnum || CORRUPT_DB ); sqlite3VdbeAddOp3(v, opcode, iCur, pPk->tnum, iDb); sqlite3VdbeSetP4KeyInfo(pParse, pPk); VdbeComment((v, "%s", pTab->zName)); @@ -113258,7 +130846,7 @@ SQLITE_PRIVATE void sqlite3OpenTable( /* ** Return a pointer to the column affinity string associated with index -** pIdx. A column affinity string has one character for each column in +** pIdx. A column affinity string has one character for each column in ** the table, according to the affinity of the column: ** ** Character Column affinity @@ -113276,88 +130864,149 @@ SQLITE_PRIVATE void sqlite3OpenTable( ** is managed along with the rest of the Index structure. It will be ** released when sqlite3DeleteIndex() is called. */ -SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){ +static SQLITE_NOINLINE const char *computeIndexAffStr(sqlite3 *db, Index *pIdx){ + /* The first time a column affinity string for a particular index is + ** required, it is allocated and populated here. It is then stored as + ** a member of the Index structure for subsequent use. + ** + ** The column affinity string will eventually be deleted by + ** sqliteDeleteIndex() when the Index structure itself is cleaned + ** up. + */ + int n; + Table *pTab = pIdx->pTable; + pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+1); if( !pIdx->zColAff ){ - /* The first time a column affinity string for a particular index is - ** required, it is allocated and populated here. It is then stored as - ** a member of the Index structure for subsequent use. - ** - ** The column affinity string will eventually be deleted by - ** sqliteDeleteIndex() when the Index structure itself is cleaned - ** up. - */ - int n; - Table *pTab = pIdx->pTable; - pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+1); - if( !pIdx->zColAff ){ - sqlite3OomFault(db); - return 0; - } - for(n=0; nnColumn; n++){ - i16 x = pIdx->aiColumn[n]; - if( x>=0 ){ - pIdx->zColAff[n] = pTab->aCol[x].affinity; - }else if( x==XN_ROWID ){ - pIdx->zColAff[n] = SQLITE_AFF_INTEGER; - }else{ - char aff; - assert( x==XN_EXPR ); - assert( pIdx->aColExpr!=0 ); - aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr); - if( aff==0 ) aff = SQLITE_AFF_BLOB; - pIdx->zColAff[n] = aff; - } - } - pIdx->zColAff[n] = 0; + sqlite3OomFault(db); + return 0; } - + for(n=0; nnColumn; n++){ + i16 x = pIdx->aiColumn[n]; + char aff; + if( x>=0 ){ + aff = pTab->aCol[x].affinity; + }else if( x==XN_ROWID ){ + aff = SQLITE_AFF_INTEGER; + }else{ + assert( x==XN_EXPR ); + assert( pIdx->bHasExpr ); + assert( pIdx->aColExpr!=0 ); + aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr); + } + if( affSQLITE_AFF_NUMERIC) aff = SQLITE_AFF_NUMERIC; + pIdx->zColAff[n] = aff; + } + pIdx->zColAff[n] = 0; + return pIdx->zColAff; +} +SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){ + if( !pIdx->zColAff ) return computeIndexAffStr(db, pIdx); return pIdx->zColAff; } + /* +** Compute an affinity string for a table. Space is obtained +** from sqlite3DbMalloc(). The caller is responsible for freeing +** the space when done. +*/ +SQLITE_PRIVATE char *sqlite3TableAffinityStr(sqlite3 *db, const Table *pTab){ + char *zColAff; + zColAff = (char *)sqlite3DbMallocRaw(db, pTab->nCol+1); + if( zColAff ){ + int i, j; + for(i=j=0; inCol; i++){ + if( (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ){ + zColAff[j++] = pTab->aCol[i].affinity; + } + } + do{ + zColAff[j--] = 0; + }while( j>=0 && zColAff[j]<=SQLITE_AFF_BLOB ); + } + return zColAff; +} + +/* +** Make changes to the evolving bytecode to do affinity transformations +** of values that are about to be gathered into a row for table pTab. +** +** For ordinary (legacy, non-strict) tables: +** ----------------------------------------- +** ** Compute the affinity string for table pTab, if it has not already been ** computed. As an optimization, omit trailing SQLITE_AFF_BLOB affinities. ** -** If the affinity exists (if it is no entirely SQLITE_AFF_BLOB values) and -** if iReg>0 then code an OP_Affinity opcode that will set the affinities -** for register iReg and following. Or if affinities exists and iReg==0, +** If the affinity string is empty (because it was all SQLITE_AFF_BLOB entries +** which were then optimized out) then this routine becomes a no-op. +** +** Otherwise if iReg>0 then code an OP_Affinity opcode that will set the +** affinities for register iReg and following. Or if iReg==0, ** then just set the P4 operand of the previous opcode (which should be ** an OP_MakeRecord) to the affinity string. ** ** A column affinity string has one character per column: ** -** Character Column affinity -** ------------------------------ -** 'A' BLOB -** 'B' TEXT -** 'C' NUMERIC -** 'D' INTEGER -** 'E' REAL +** Character Column affinity +** --------- --------------- +** 'A' BLOB +** 'B' TEXT +** 'C' NUMERIC +** 'D' INTEGER +** 'E' REAL +** +** For STRICT tables: +** ------------------ +** +** Generate an appropriate OP_TypeCheck opcode that will verify the +** datatypes against the column definitions in pTab. If iReg==0, that +** means an OP_MakeRecord opcode has already been generated and should be +** the last opcode generated. The new OP_TypeCheck needs to be inserted +** before the OP_MakeRecord. The new OP_TypeCheck should use the same +** register set as the OP_MakeRecord. If iReg>0 then register iReg is +** the first of a series of registers that will form the new record. +** Apply the type checking to that array of registers. */ SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe *v, Table *pTab, int iReg){ int i; - char *zColAff = pTab->zColAff; + char *zColAff; + if( pTab->tabFlags & TF_Strict ){ + if( iReg==0 ){ + /* Move the previous opcode (which should be OP_MakeRecord) forward + ** by one slot and insert a new OP_TypeCheck where the current + ** OP_MakeRecord is found */ + VdbeOp *pPrev; + sqlite3VdbeAppendP4(v, pTab, P4_TABLE); + pPrev = sqlite3VdbeGetLastOp(v); + assert( pPrev!=0 ); + assert( pPrev->opcode==OP_MakeRecord || sqlite3VdbeDb(v)->mallocFailed ); + pPrev->opcode = OP_TypeCheck; + sqlite3VdbeAddOp3(v, OP_MakeRecord, pPrev->p1, pPrev->p2, pPrev->p3); + }else{ + /* Insert an isolated OP_Typecheck */ + sqlite3VdbeAddOp2(v, OP_TypeCheck, iReg, pTab->nNVCol); + sqlite3VdbeAppendP4(v, pTab, P4_TABLE); + } + return; + } + zColAff = pTab->zColAff; if( zColAff==0 ){ - sqlite3 *db = sqlite3VdbeDb(v); - zColAff = (char *)sqlite3DbMallocRaw(0, pTab->nCol+1); + zColAff = sqlite3TableAffinityStr(0, pTab); if( !zColAff ){ - sqlite3OomFault(db); + sqlite3OomFault(sqlite3VdbeDb(v)); return; } - - for(i=0; inCol; i++){ - zColAff[i] = pTab->aCol[i].affinity; - } - do{ - zColAff[i--] = 0; - }while( i>=0 && zColAff[i]==SQLITE_AFF_BLOB ); pTab->zColAff = zColAff; } - i = sqlite3Strlen30(zColAff); + assert( zColAff!=0 ); + i = sqlite3Strlen30NN(zColAff); if( i ){ if( iReg ){ sqlite3VdbeAddOp4(v, OP_Affinity, iReg, i, 0, zColAff, i); }else{ + assert( sqlite3VdbeGetLastOp(v)->opcode==OP_MakeRecord + || sqlite3VdbeDb(v)->mallocFailed ); sqlite3VdbeChangeP4(v, -1, zColAff, i); } } @@ -113365,9 +131014,9 @@ SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe *v, Table *pTab, int iReg){ /* ** Return non-zero if the table pTab in database iDb or any of its indices -** have been opened at any point in the VDBE program. This is used to see if -** a statement of the form "INSERT INTO SELECT ..." can -** run without using a temporary table for the results of the SELECT. +** have been opened at any point in the VDBE program. This is used to see if +** a statement of the form "INSERT INTO SELECT ..." can +** run without using a temporary table for the results of the SELECT. */ static int readsTable(Parse *p, int iDb, Table *pTab){ Vdbe *v = sqlite3GetVdbe(p); @@ -113382,7 +131031,7 @@ static int readsTable(Parse *p, int iDb, Table *pTab){ assert( pOp!=0 ); if( pOp->opcode==OP_OpenRead && pOp->p3==iDb ){ Index *pIndex; - int tnum = pOp->p2; + Pgno tnum = pOp->p2; if( tnum==pTab->tnum ){ return 1; } @@ -113403,6 +131052,125 @@ static int readsTable(Parse *p, int iDb, Table *pTab){ return 0; } +/* This walker callback will compute the union of colFlags flags for all +** referenced columns in a CHECK constraint or generated column expression. +*/ +static int exprColumnFlagUnion(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_COLUMN && pExpr->iColumn>=0 ){ + assert( pExpr->iColumn < pWalker->u.pTab->nCol ); + pWalker->eCode |= pWalker->u.pTab->aCol[pExpr->iColumn].colFlags; + } + return WRC_Continue; +} + +#ifndef SQLITE_OMIT_GENERATED_COLUMNS +/* +** All regular columns for table pTab have been puts into registers +** starting with iRegStore. The registers that correspond to STORED +** or VIRTUAL columns have not yet been initialized. This routine goes +** back and computes the values for those columns based on the previously +** computed normal columns. +*/ +SQLITE_PRIVATE void sqlite3ComputeGeneratedColumns( + Parse *pParse, /* Parsing context */ + int iRegStore, /* Register holding the first column */ + Table *pTab /* The table */ +){ + int i; + Walker w; + Column *pRedo; + int eProgress; + VdbeOp *pOp; + + assert( pTab->tabFlags & TF_HasGenerated ); + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + + /* Before computing generated columns, first go through and make sure + ** that appropriate affinity has been applied to the regular columns + */ + sqlite3TableAffinity(pParse->pVdbe, pTab, iRegStore); + if( (pTab->tabFlags & TF_HasStored)!=0 ){ + pOp = sqlite3VdbeGetLastOp(pParse->pVdbe); + if( pOp->opcode==OP_Affinity ){ + /* Change the OP_Affinity argument to '@' (NONE) for all stored + ** columns. '@' is the no-op affinity and those columns have not + ** yet been computed. */ + int ii, jj; + char *zP4 = pOp->p4.z; + assert( zP4!=0 ); + assert( pOp->p4type==P4_DYNAMIC ); + for(ii=jj=0; zP4[jj]; ii++){ + if( pTab->aCol[ii].colFlags & COLFLAG_VIRTUAL ){ + continue; + } + if( pTab->aCol[ii].colFlags & COLFLAG_STORED ){ + zP4[jj] = SQLITE_AFF_NONE; + } + jj++; + } + }else if( pOp->opcode==OP_TypeCheck ){ + /* If an OP_TypeCheck was generated because the table is STRICT, + ** then set the P3 operand to indicate that generated columns should + ** not be checked */ + pOp->p3 = 1; + } + } + + /* Because there can be multiple generated columns that refer to one another, + ** this is a two-pass algorithm. On the first pass, mark all generated + ** columns as "not available". + */ + for(i=0; inCol; i++){ + if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){ + testcase( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ); + testcase( pTab->aCol[i].colFlags & COLFLAG_STORED ); + pTab->aCol[i].colFlags |= COLFLAG_NOTAVAIL; + } + } + + w.u.pTab = pTab; + w.xExprCallback = exprColumnFlagUnion; + w.xSelectCallback = 0; + w.xSelectCallback2 = 0; + + /* On the second pass, compute the value of each NOT-AVAILABLE column. + ** Companion code in the TK_COLUMN case of sqlite3ExprCodeTarget() will + ** compute dependencies and mark remove the COLSPAN_NOTAVAIL mark, as + ** they are needed. + */ + pParse->iSelfTab = -iRegStore; + do{ + eProgress = 0; + pRedo = 0; + for(i=0; inCol; i++){ + Column *pCol = pTab->aCol + i; + if( (pCol->colFlags & COLFLAG_NOTAVAIL)!=0 ){ + int x; + pCol->colFlags |= COLFLAG_BUSY; + w.eCode = 0; + sqlite3WalkExpr(&w, sqlite3ColumnExpr(pTab, pCol)); + pCol->colFlags &= ~COLFLAG_BUSY; + if( w.eCode & COLFLAG_NOTAVAIL ){ + pRedo = pCol; + continue; + } + eProgress = 1; + assert( pCol->colFlags & COLFLAG_GENERATED ); + x = sqlite3TableColumnToStorage(pTab, i) + iRegStore; + sqlite3ExprCodeGeneratedColumn(pParse, pTab, pCol, x); + pCol->colFlags &= ~COLFLAG_NOTAVAIL; + } + } + }while( pRedo && eProgress ); + if( pRedo ){ + sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"", pRedo->zCnName); + } + pParse->iSelfTab = 0; +} +#endif /* SQLITE_OMIT_GENERATED_COLUMNS */ + + #ifndef SQLITE_OMIT_AUTOINCREMENT /* ** Locate or create an AutoincInfo structure associated with table pTab @@ -113446,7 +131214,7 @@ static int autoIncBegin( ** Ticket d8dc2b3a58cd5dc2918a1d4acb 2018-05-23 */ if( pSeqTab==0 || !HasRowid(pSeqTab) - || IsVirtual(pSeqTab) + || NEVER(IsVirtual(pSeqTab)) || pSeqTab->nCol!=2 ){ pParse->nErr++; @@ -113458,7 +131226,9 @@ static int autoIncBegin( while( pInfo && pInfo->pTab!=pTab ){ pInfo = pInfo->pNext; } if( pInfo==0 ){ pInfo = sqlite3DbMallocRawNN(pParse->db, sizeof(*pInfo)); - if( pInfo==0 ) return 0; + sqlite3ParserAddCleanup(pToplevel, sqlite3DbFree, pInfo); + testcase( pParse->earlyCleanup ); + if( pParse->db->mallocFailed ) return 0; pInfo->pNext = pToplevel->pAinc; pToplevel->pAinc = pInfo; pInfo->pTab = pTab; @@ -113474,7 +131244,7 @@ static int autoIncBegin( /* ** This routine generates code that will initialize all of the -** register used by the autoincrement tracker. +** register used by the autoincrement tracker. */ SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse){ AutoincInfo *p; /* Information about an AUTOINCREMENT */ @@ -113503,7 +131273,7 @@ SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse){ /* 8 */ {OP_Goto, 0, 11, 0}, /* 9 */ {OP_Next, 0, 2, 0}, /* 10 */ {OP_Integer, 0, 0, 0}, - /* 11 */ {OP_Close, 0, 0, 0} + /* 11 */ {OP_Close, 0, 0, 0} }; VdbeOp *aOp; pDb = &db->aDb[p->iDb]; @@ -113525,6 +131295,7 @@ SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse){ aOp[7].p2 = memId+2; aOp[7].p1 = memId; aOp[10].p2 = memId; + if( pParse->nTab==0 ) pParse->nTab = 1; } } @@ -113709,7 +131480,7 @@ SQLITE_PRIVATE void sqlite3Insert( Parse *pParse, /* Parser context */ SrcList *pTabList, /* Name of table into which we are inserting */ Select *pSelect, /* A SELECT statement to use as the data source */ - IdList *pColumn, /* Column names corresponding to IDLIST. */ + IdList *pColumn, /* Column names corresponding to IDLIST, or NULL. */ int onError, /* How to handle constraint errors */ Upsert *pUpsert /* ON CONFLICT clauses for upsert, or NULL */ ){ @@ -113734,6 +131505,7 @@ SQLITE_PRIVATE void sqlite3Insert( u8 withoutRowid; /* 0 for normal table. 1 for WITHOUT ROWID table */ u8 bIdListInOrder; /* True if IDLIST is in table order */ ExprList *pList = 0; /* List of VALUES() to be inserted */ + int iRegStore; /* Register in which to store next column */ /* Register allocations */ int regFromSelect = 0;/* Base register for data coming from SELECT */ @@ -113751,9 +131523,11 @@ SQLITE_PRIVATE void sqlite3Insert( #endif db = pParse->db; - if( pParse->nErr || db->mallocFailed ){ + assert( db->pParse==pParse ); + if( pParse->nErr ){ goto insert_cleanup; } + assert( db->mallocFailed==0 ); dest.iSDParm = 0; /* Suppress a harmless compiler warning */ /* If the Select object is really just a simple VALUES() list with a @@ -113787,7 +131561,7 @@ SQLITE_PRIVATE void sqlite3Insert( */ #ifndef SQLITE_OMIT_TRIGGER pTrigger = sqlite3TriggersExist(pParse, pTab, TK_INSERT, 0, &tmask); - isView = pTab->pSelect!=0; + isView = IsView(pTab); #else # define pTrigger 0 # define tmask 0 @@ -113799,6 +131573,14 @@ SQLITE_PRIVATE void sqlite3Insert( #endif assert( (pTrigger && tmask) || (pTrigger==0 && tmask==0) ); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x10000 ){ + sqlite3TreeViewLine(0, "In sqlite3Insert() at %s:%d", __FILE__, __LINE__); + sqlite3TreeViewInsert(pParse->pWith, pTabList, pColumn, pSelect, pList, + onError, pUpsert, pTrigger); + } +#endif + /* If pTab is really a view, make sure it has been initialized. ** ViewGetColumnNames() is a no-op if pTab is not a view. */ @@ -113808,7 +131590,7 @@ SQLITE_PRIVATE void sqlite3Insert( /* Cannot insert into a read-only table. */ - if( sqlite3IsReadOnly(pParse, pTab, tmask) ){ + if( sqlite3IsReadOnly(pParse, pTab, pTrigger) ){ goto insert_cleanup; } @@ -113829,7 +131611,11 @@ SQLITE_PRIVATE void sqlite3Insert( ** ** This is the 2nd template. */ - if( pColumn==0 && xferOptimization(pParse, pTab, pSelect, onError, iDb) ){ + if( pColumn==0 + && pSelect!=0 + && pTrigger==0 + && xferOptimization(pParse, pTab, pSelect, onError, iDb) + ){ assert( !pTrigger ); assert( pList==0 ); goto insert_end; @@ -113841,8 +131627,8 @@ SQLITE_PRIVATE void sqlite3Insert( */ regAutoinc = autoIncBegin(pParse, iDb, pTab); - /* Allocate registers for holding the rowid of the new row, - ** the content of the new row, and the assembled row record. + /* Allocate a block registers to hold the rowid and the values + ** for all columns of the new row. */ regRowid = regIns = pParse->nMem+1; pParse->nMem += pTab->nCol + 1; @@ -113853,7 +131639,7 @@ SQLITE_PRIVATE void sqlite3Insert( regData = regRowid+1; /* If the INSERT statement included an IDLIST term, then make sure - ** all elements of the IDLIST really are columns of the table and + ** all elements of the IDLIST really are columns of the table and ** remember the column indices. ** ** If the table has an INTEGER PRIMARY KEY column and that column @@ -113861,21 +131647,39 @@ SQLITE_PRIVATE void sqlite3Insert( ** the index into IDLIST of the primary key column. ipkColumn is ** the index of the primary key as it appears in IDLIST, not as ** is appears in the original table. (The index of the INTEGER - ** PRIMARY KEY in the original table is pTab->iPKey.) + ** PRIMARY KEY in the original table is pTab->iPKey.) After this + ** loop, if ipkColumn==(-1), that means that integer primary key + ** is unspecified, and hence the table is either WITHOUT ROWID or + ** it will automatically generated an integer primary key. + ** + ** bIdListInOrder is true if the columns in IDLIST are in storage + ** order. This enables an optimization that avoids shuffling the + ** columns into storage order. False negatives are harmless, + ** but false positives will cause database corruption. */ - bIdListInOrder = (pTab->tabFlags & TF_OOOHidden)==0; + bIdListInOrder = (pTab->tabFlags & (TF_OOOHidden|TF_HasStored))==0; if( pColumn ){ + assert( pColumn->eU4!=EU4_EXPR ); + pColumn->eU4 = EU4_IDX; for(i=0; inId; i++){ - pColumn->a[i].idx = -1; + pColumn->a[i].u4.idx = -1; } for(i=0; inId; i++){ for(j=0; jnCol; j++){ - if( sqlite3StrICmp(pColumn->a[i].zName, pTab->aCol[j].zName)==0 ){ - pColumn->a[i].idx = j; + if( sqlite3StrICmp(pColumn->a[i].zName, pTab->aCol[j].zCnName)==0 ){ + pColumn->a[i].u4.idx = j; if( i!=j ) bIdListInOrder = 0; if( j==pTab->iPKey ){ ipkColumn = i; assert( !withoutRowid ); } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( pTab->aCol[j].colFlags & (COLFLAG_STORED|COLFLAG_VIRTUAL) ){ + sqlite3ErrorMsg(pParse, + "cannot INSERT into generated column \"%s\"", + pTab->aCol[j].zCnName); + goto insert_cleanup; + } +#endif break; } } @@ -113885,7 +131689,7 @@ SQLITE_PRIVATE void sqlite3Insert( bIdListInOrder = 0; }else{ sqlite3ErrorMsg(pParse, "table %S has no column named %s", - pTabList, 0, pColumn->a[i].zName); + pTabList->a, pColumn->a[i].zName); pParse->checkSchema = 1; goto insert_cleanup; } @@ -113913,7 +131717,9 @@ SQLITE_PRIVATE void sqlite3Insert( dest.nSdst = pTab->nCol; rc = sqlite3Select(pParse, pSelect, &dest); regFromSelect = dest.iSdst; - if( rc || db->mallocFailed || pParse->nErr ) goto insert_cleanup; + assert( db->pParse==pParse ); + if( rc || pParse->nErr ) goto insert_cleanup; + assert( db->mallocFailed==0 ); sqlite3VdbeEndCoroutine(v, regYield); sqlite3VdbeJumpHere(v, addrTop - 1); /* label B: */ assert( pSelect->pEList ); @@ -113925,7 +131731,7 @@ SQLITE_PRIVATE void sqlite3Insert( ** the destination table (template 3). ** ** A temp table must be used if the table being updated is also one - ** of the tables being read by the SELECT statement. Also use a + ** of the tables being read by the SELECT statement. Also use a ** temp table in the case of row triggers. */ if( pTrigger || readsTable(pParse, iDb, pTab) ){ @@ -113961,7 +131767,7 @@ SQLITE_PRIVATE void sqlite3Insert( sqlite3ReleaseTempReg(pParse, regTempRowid); } }else{ - /* This is the case if the data for the INSERT is coming from a + /* This is the case if the data for the INSERT is coming from a ** single-row VALUES clause */ NameContext sNC; @@ -113980,35 +131786,54 @@ SQLITE_PRIVATE void sqlite3Insert( } /* If there is no IDLIST term but the table has an integer primary - ** key, the set the ipkColumn variable to the integer primary key + ** key, the set the ipkColumn variable to the integer primary key ** column index in the original table definition. */ if( pColumn==0 && nColumn>0 ){ ipkColumn = pTab->iPKey; - } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( ipkColumn>=0 && (pTab->tabFlags & TF_HasGenerated)!=0 ){ + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + for(i=ipkColumn-1; i>=0; i--){ + if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){ + testcase( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ); + testcase( pTab->aCol[i].colFlags & COLFLAG_STORED ); + ipkColumn--; + } + } + } +#endif - /* Make sure the number of columns in the source data matches the number - ** of columns to be inserted into the table. - */ - for(i=0; inCol; i++){ - nHidden += (IsHiddenColumn(&pTab->aCol[i]) ? 1 : 0); - } - if( pColumn==0 && nColumn && nColumn!=(pTab->nCol-nHidden) ){ - sqlite3ErrorMsg(pParse, - "table %S has %d columns but %d values were supplied", - pTabList, 0, pTab->nCol-nHidden, nColumn); - goto insert_cleanup; + /* Make sure the number of columns in the source data matches the number + ** of columns to be inserted into the table. + */ + assert( TF_HasHidden==COLFLAG_HIDDEN ); + assert( TF_HasGenerated==COLFLAG_GENERATED ); + assert( COLFLAG_NOINSERT==(COLFLAG_GENERATED|COLFLAG_HIDDEN) ); + if( (pTab->tabFlags & (TF_HasGenerated|TF_HasHidden))!=0 ){ + for(i=0; inCol; i++){ + if( pTab->aCol[i].colFlags & COLFLAG_NOINSERT ) nHidden++; + } + } + if( nColumn!=(pTab->nCol-nHidden) ){ + sqlite3ErrorMsg(pParse, + "table %S has %d columns but %d values were supplied", + pTabList->a, pTab->nCol-nHidden, nColumn); + goto insert_cleanup; + } } if( pColumn!=0 && nColumn!=pColumn->nId ){ sqlite3ErrorMsg(pParse, "%d values for %d columns", nColumn, pColumn->nId); goto insert_cleanup; } - + /* Initialize the count of rows to be inserted */ if( (db->flags & SQLITE_CountRows)!=0 && !pParse->nested && !pParse->pTriggerTab + && !pParse->bReturning ){ regRowCount = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount); @@ -114019,7 +131844,7 @@ SQLITE_PRIVATE void sqlite3Insert( int nIdx; nIdx = sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, -1, 0, &iDataCur, &iIdxCur); - aRegIdx = sqlite3DbMallocRawNN(db, sizeof(int)*(nIdx+1)); + aRegIdx = sqlite3DbMallocRawNN(db, sizeof(int)*(nIdx+2)); if( aRegIdx==0 ){ goto insert_cleanup; } @@ -114028,17 +131853,37 @@ SQLITE_PRIVATE void sqlite3Insert( aRegIdx[i] = ++pParse->nMem; pParse->nMem += pIdx->nColumn; } + aRegIdx[i] = ++pParse->nMem; /* Register to store the table record */ } #ifndef SQLITE_OMIT_UPSERT if( pUpsert ){ - pTabList->a[0].iCursor = iDataCur; - pUpsert->pUpsertSrc = pTabList; - pUpsert->regData = regData; - pUpsert->iDataCur = iDataCur; - pUpsert->iIdxCur = iIdxCur; - if( pUpsert->pUpsertTarget ){ - sqlite3UpsertAnalyzeTarget(pParse, pTabList, pUpsert); + Upsert *pNx; + if( IsVirtual(pTab) ){ + sqlite3ErrorMsg(pParse, "UPSERT not implemented for virtual table \"%s\"", + pTab->zName); + goto insert_cleanup; } + if( IsView(pTab) ){ + sqlite3ErrorMsg(pParse, "cannot UPSERT a view"); + goto insert_cleanup; + } + if( sqlite3HasExplicitNulls(pParse, pUpsert->pUpsertTarget) ){ + goto insert_cleanup; + } + pTabList->a[0].iCursor = iDataCur; + pNx = pUpsert; + do{ + pNx->pUpsertSrc = pTabList; + pNx->regData = regData; + pNx->iDataCur = iDataCur; + pNx->iIdxCur = iIdxCur; + if( pNx->pUpsertTarget ){ + if( sqlite3UpsertAnalyzeTarget(pParse, pTabList, pNx) ){ + goto insert_cleanup; + } + } + pNx = pNx->pNextUpsert; + }while( pNx!=0 ); } #endif @@ -114065,13 +131910,106 @@ SQLITE_PRIVATE void sqlite3Insert( ** goto C ** D: ... */ + sqlite3VdbeReleaseRegisters(pParse, regData, pTab->nCol, 0, 0); addrInsTop = addrCont = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); VdbeCoverage(v); + if( ipkColumn>=0 ){ + /* tag-20191021-001: If the INTEGER PRIMARY KEY is being generated by the + ** SELECT, go ahead and copy the value into the rowid slot now, so that + ** the value does not get overwritten by a NULL at tag-20191021-002. */ + sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid); + } } + /* Compute data for ordinary columns of the new entry. Values + ** are written in storage order into registers starting with regData. + ** Only ordinary columns are computed in this loop. The rowid + ** (if there is one) is computed later and generated columns are + ** computed after the rowid since they might depend on the value + ** of the rowid. + */ + nHidden = 0; + iRegStore = regData; assert( regData==regRowid+1 ); + for(i=0; inCol; i++, iRegStore++){ + int k; + u32 colFlags; + assert( i>=nHidden ); + if( i==pTab->iPKey ){ + /* tag-20191021-002: References to the INTEGER PRIMARY KEY are filled + ** using the rowid. So put a NULL in the IPK slot of the record to avoid + ** using excess space. The file format definition requires this extra + ** NULL - we cannot optimize further by skipping the column completely */ + sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore); + continue; + } + if( ((colFlags = pTab->aCol[i].colFlags) & COLFLAG_NOINSERT)!=0 ){ + nHidden++; + if( (colFlags & COLFLAG_VIRTUAL)!=0 ){ + /* Virtual columns do not participate in OP_MakeRecord. So back up + ** iRegStore by one slot to compensate for the iRegStore++ in the + ** outer for() loop */ + iRegStore--; + continue; + }else if( (colFlags & COLFLAG_STORED)!=0 ){ + /* Stored columns are computed later. But if there are BEFORE + ** triggers, the slots used for stored columns will be OP_Copy-ed + ** to a second block of registers, so the register needs to be + ** initialized to NULL to avoid an uninitialized register read */ + if( tmask & TRIGGER_BEFORE ){ + sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore); + } + continue; + }else if( pColumn==0 ){ + /* Hidden columns that are not explicitly named in the INSERT + ** get there default value */ + sqlite3ExprCodeFactorable(pParse, + sqlite3ColumnExpr(pTab, &pTab->aCol[i]), + iRegStore); + continue; + } + } + if( pColumn ){ + assert( pColumn->eU4==EU4_IDX ); + for(j=0; jnId && pColumn->a[j].u4.idx!=i; j++){} + if( j>=pColumn->nId ){ + /* A column not named in the insert column list gets its + ** default value */ + sqlite3ExprCodeFactorable(pParse, + sqlite3ColumnExpr(pTab, &pTab->aCol[i]), + iRegStore); + continue; + } + k = j; + }else if( nColumn==0 ){ + /* This is INSERT INTO ... DEFAULT VALUES. Load the default value. */ + sqlite3ExprCodeFactorable(pParse, + sqlite3ColumnExpr(pTab, &pTab->aCol[i]), + iRegStore); + continue; + }else{ + k = i - nHidden; + } + + if( useTempTable ){ + sqlite3VdbeAddOp3(v, OP_Column, srcTab, k, iRegStore); + }else if( pSelect ){ + if( regFromSelect!=regData ){ + sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+k, iRegStore); + } + }else{ + Expr *pX = pList->a[k].pExpr; + int y = sqlite3ExprCodeTarget(pParse, pX, iRegStore); + if( y!=iRegStore ){ + sqlite3VdbeAddOp2(v, + ExprHasProperty(pX, EP_Subquery) ? OP_Copy : OP_SCopy, y, iRegStore); + } + } + } + + /* Run the BEFORE and INSTEAD OF triggers, if there are any */ - endOfLoop = sqlite3VdbeMakeLabel(v); + endOfLoop = sqlite3VdbeMakeLabel(pParse); if( tmask & TRIGGER_BEFORE ){ int regCols = sqlite3GetTempRange(pParse, pTab->nCol+1); @@ -114098,30 +132036,21 @@ SQLITE_PRIVATE void sqlite3Insert( sqlite3VdbeAddOp1(v, OP_MustBeInt, regCols); VdbeCoverage(v); } - /* Cannot have triggers on a virtual table. If it were possible, - ** this block would have to account for hidden column. - */ - assert( !IsVirtual(pTab) ); + /* Copy the new data already generated. */ + assert( pTab->nNVCol>0 || pParse->nErr>0 ); + sqlite3VdbeAddOp3(v, OP_Copy, regRowid+1, regCols+1, pTab->nNVCol-1); - /* Create the new column data - */ - for(i=j=0; inCol; i++){ - if( pColumn ){ - for(j=0; jnId; j++){ - if( pColumn->a[j].idx==i ) break; - } - } - if( (!useTempTable && !pList) || (pColumn && j>=pColumn->nId) - || (pColumn==0 && IsOrdinaryHiddenColumn(&pTab->aCol[i])) ){ - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regCols+i+1); - }else if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, regCols+i+1); - }else{ - assert( pSelect==0 ); /* Otherwise useTempTable is true */ - sqlite3ExprCodeAndCache(pParse, pList->a[j].pExpr, regCols+i+1); - } - if( pColumn==0 && !IsOrdinaryHiddenColumn(&pTab->aCol[i]) ) j++; +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + /* Compute the new value for generated columns after all other + ** columns have already been computed. This must be done after + ** computing the ROWID in case one of the generated columns + ** refers to the ROWID. */ + if( pTab->tabFlags & TF_HasGenerated ){ + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + sqlite3ComputeGeneratedColumns(pParse, regCols+1, pTab); } +#endif /* If this is an INSERT on a view with an INSTEAD OF INSERT trigger, ** do not attempt any conversions before assembling the record. @@ -114133,36 +132062,30 @@ SQLITE_PRIVATE void sqlite3Insert( } /* Fire BEFORE or INSTEAD OF triggers */ - sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_BEFORE, + sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_BEFORE, pTab, regCols-pTab->nCol-1, onError, endOfLoop); sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol+1); } - /* Compute the content of the next row to insert into a range of - ** registers beginning at regIns. - */ if( !isView ){ if( IsVirtual(pTab) ){ /* The row that the VUpdate opcode will delete: none */ sqlite3VdbeAddOp2(v, OP_Null, 0, regIns); } if( ipkColumn>=0 ){ + /* Compute the new rowid */ if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regRowid); }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid); + /* Rowid already initialized at tag-20191021-001 */ }else{ - VdbeOp *pOp; - sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regRowid); - pOp = sqlite3VdbeGetOp(v, -1); - assert( pOp!=0 ); - if( pOp->opcode==OP_Null && !IsVirtual(pTab) ){ + Expr *pIpk = pList->a[ipkColumn].pExpr; + if( pIpk->op==TK_NULL && !IsVirtual(pTab) ){ + sqlite3VdbeAddOp3(v, OP_NewRowid, iDataCur, regRowid, regAutoinc); appendFlag = 1; - pOp->opcode = OP_NewRowid; - pOp->p1 = iDataCur; - pOp->p2 = regRowid; - pOp->p3 = regAutoinc; + }else{ + sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regRowid); } } /* If the PRIMARY KEY expression is NULL, then use OP_NewRowid @@ -114188,45 +132111,15 @@ SQLITE_PRIVATE void sqlite3Insert( } autoIncStep(pParse, regAutoinc, regRowid); - /* Compute data for all columns of the new entry, beginning - ** with the first column. - */ - nHidden = 0; - for(i=0; inCol; i++){ - int iRegStore = regRowid+1+i; - if( i==pTab->iPKey ){ - /* The value of the INTEGER PRIMARY KEY column is always a NULL. - ** Whenever this column is read, the rowid will be substituted - ** in its place. Hence, fill this column with a NULL to avoid - ** taking up data space with information that will never be used. - ** As there may be shallow copies of this value, make it a soft-NULL */ - sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore); - continue; - } - if( pColumn==0 ){ - if( IsHiddenColumn(&pTab->aCol[i]) ){ - j = -1; - nHidden++; - }else{ - j = i - nHidden; - } - }else{ - for(j=0; jnId; j++){ - if( pColumn->a[j].idx==i ) break; - } - } - if( j<0 || nColumn==0 || (pColumn && j>=pColumn->nId) ){ - sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore); - }else if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, iRegStore); - }else if( pSelect ){ - if( regFromSelect!=regData ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+j, iRegStore); - } - }else{ - sqlite3ExprCode(pParse, pList->a[j].pExpr, iRegStore); - } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + /* Compute the new value for generated columns after all other + ** columns have already been computed. This must be done after + ** computing the ROWID in case one of the generated columns + ** is derived from the INTEGER PRIMARY KEY. */ + if( pTab->tabFlags & TF_HasGenerated ){ + sqlite3ComputeGeneratedColumns(pParse, regRowid+1, pTab); } +#endif /* Generate code to check constraints and generate index keys and ** do the insertion. @@ -114241,28 +132134,35 @@ SQLITE_PRIVATE void sqlite3Insert( }else #endif { - int isReplace; /* Set to true if constraints may cause a replace */ + int isReplace = 0;/* Set to true if constraints may cause a replace */ int bUseSeek; /* True to use OPFLAG_SEEKRESULT */ sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur, regIns, 0, ipkColumn>=0, onError, endOfLoop, &isReplace, 0, pUpsert ); - sqlite3FkCheck(pParse, pTab, 0, regIns, 0, 0); + if( db->flags & SQLITE_ForeignKeys ){ + sqlite3FkCheck(pParse, pTab, 0, regIns, 0, 0); + } /* Set the OPFLAG_USESEEKRESULT flag if either (a) there are no REPLACE ** constraints or (b) there are no triggers and this table is not a ** parent table in a foreign key constraint. It is safe to set the ** flag in the second case as if any REPLACE constraint is hit, an - ** OP_Delete or OP_IdxDelete instruction will be executed on each + ** OP_Delete or OP_IdxDelete instruction will be executed on each ** cursor that is disturbed. And these instructions both clear the ** VdbeCursor.seekResult variable, disabling the OPFLAG_USESEEKRESULT ** functionality. */ - bUseSeek = (isReplace==0 || (pTrigger==0 && - ((db->flags & SQLITE_ForeignKeys)==0 || sqlite3FkReferences(pTab)==0) - )); + bUseSeek = (isReplace==0 || !sqlite3VdbeHasSubProgram(v)); sqlite3CompleteInsertion(pParse, pTab, iDataCur, iIdxCur, regIns, aRegIdx, 0, appendFlag, bUseSeek ); } +#ifdef SQLITE_ALLOW_ROWID_IN_VIEW + }else if( pParse->bReturning ){ + /* If there is a RETURNING clause, populate the rowid register with + ** constant value -1, in case one or more of the returned expressions + ** refer to the "rowid" of the view. */ + sqlite3VdbeAddOp2(v, OP_Integer, -1, regRowid); +#endif } /* Update the count of rows that are inserted @@ -114273,7 +132173,7 @@ SQLITE_PRIVATE void sqlite3Insert( if( pTrigger ){ /* Code AFTER triggers */ - sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_AFTER, + sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_AFTER, pTab, regData-2-pTab->nCol, onError, endOfLoop); } @@ -114287,10 +132187,21 @@ SQLITE_PRIVATE void sqlite3Insert( sqlite3VdbeAddOp1(v, OP_Close, srcTab); }else if( pSelect ){ sqlite3VdbeGoto(v, addrCont); +#ifdef SQLITE_DEBUG + /* If we are jumping back to an OP_Yield that is preceded by an + ** OP_ReleaseReg, set the p5 flag on the OP_Goto so that the + ** OP_ReleaseReg will be included in the loop. */ + if( sqlite3VdbeGetOp(v, addrCont-1)->opcode==OP_ReleaseReg ){ + assert( sqlite3VdbeGetOp(v, addrCont)->opcode==OP_Yield ); + sqlite3VdbeChangeP5(v, 1); + } +#endif sqlite3VdbeJumpHere(v, addrInsTop); } +#ifndef SQLITE_OMIT_XFER_OPT insert_end: +#endif /* SQLITE_OMIT_XFER_OPT */ /* Update the sqlite_sequence table by storing the content of the ** maximum rowid counter values recorded while inserting into ** autoincrement tables. @@ -114300,14 +132211,12 @@ insert_end: } /* - ** Return the number of rows inserted. If this routine is + ** Return the number of rows inserted. If this routine is ** generating code because of a call to sqlite3NestedParse(), do not ** invoke the callback function. */ if( regRowCount ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, regRowCount, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows inserted", SQLITE_STATIC); + sqlite3CodeChangeCount(v, regRowCount, "rows inserted"); } insert_cleanup: @@ -114316,7 +132225,7 @@ insert_cleanup: sqlite3UpsertDelete(db, pUpsert); sqlite3SelectDelete(db, pSelect); sqlite3IdListDelete(db, pColumn); - sqlite3DbFree(db, aRegIdx); + if( aRegIdx ) sqlite3DbNNFreeNN(db, aRegIdx); } /* Make sure "isView" and other macros defined above are undefined. Otherwise @@ -114333,15 +132242,16 @@ insert_cleanup: #endif /* -** Meanings of bits in of pWalker->eCode for checkConstraintUnchanged() +** Meanings of bits in of pWalker->eCode for +** sqlite3ExprReferencesUpdatedColumn() */ #define CKCNSTRNT_COLUMN 0x01 /* CHECK constraint uses a changing column */ #define CKCNSTRNT_ROWID 0x02 /* CHECK constraint references the ROWID */ -/* This is the Walker callback from checkConstraintUnchanged(). Set -** bit 0x01 of pWalker->eCode if -** pWalker->eCode to 0 if this expression node references any of the -** columns that are being modifed by an UPDATE statement. +/* This is the Walker callback from sqlite3ExprReferencesUpdatedColumn(). +* Set bit 0x01 of pWalker->eCode if pWalker->eCode to 0 and if this +** expression node references any of the +** columns that are being modified by an UPDATE statement. */ static int checkConstraintExprNode(Walker *pWalker, Expr *pExpr){ if( pExpr->op==TK_COLUMN ){ @@ -114362,12 +132272,21 @@ static int checkConstraintExprNode(Walker *pWalker, Expr *pExpr){ ** only columns that are modified by the UPDATE are those for which ** aiChng[i]>=0, and also the ROWID is modified if chngRowid is true. ** -** Return true if CHECK constraint pExpr does not use any of the +** Return true if CHECK constraint pExpr uses any of the ** changing columns (or the rowid if it is changing). In other words, -** return true if this CHECK constraint can be skipped when validating +** return true if this CHECK constraint must be validated for ** the new row in the UPDATE statement. +** +** 2018-09-15: pExpr might also be an expression for an index-on-expressions. +** The operation of this routine is the same - return true if an only if +** the expression uses one or more of columns identified by the second and +** third arguments. */ -static int checkConstraintUnchanged(Expr *pExpr, int *aiChng, int chngRowid){ +SQLITE_PRIVATE int sqlite3ExprReferencesUpdatedColumn( + Expr *pExpr, /* The expression to be checked */ + int *aiChng, /* aiChng[x]>=0 if column x changed by the UPDATE */ + int chngRowid /* True if UPDATE changes the rowid */ +){ Walker w; memset(&w, 0, sizeof(w)); w.eCode = 0; @@ -114382,44 +132301,70 @@ static int checkConstraintUnchanged(Expr *pExpr, int *aiChng, int chngRowid){ testcase( w.eCode==CKCNSTRNT_COLUMN ); testcase( w.eCode==CKCNSTRNT_ROWID ); testcase( w.eCode==(CKCNSTRNT_ROWID|CKCNSTRNT_COLUMN) ); - return !w.eCode; + return w.eCode!=0; } /* -** An instance of the ConstraintAddr object remembers the byte-code addresses -** for sections of the constraint checks that deal with uniqueness constraints -** on the rowid and on the upsert constraint. +** The sqlite3GenerateConstraintChecks() routine usually wants to visit +** the indexes of a table in the order provided in the Table->pIndex list. +** However, sometimes (rarely - when there is an upsert) it wants to visit +** the indexes in a different order. The following data structures accomplish +** this. ** -** This information is passed into checkReorderConstraintChecks() to insert -** some OP_Goto operations so that the rowid and upsert constraints occur -** in the correct order relative to other constraints. +** The IndexIterator object is used to walk through all of the indexes +** of a table in either Index.pNext order, or in some other order established +** by an array of IndexListTerm objects. */ -typedef struct ConstraintAddr ConstraintAddr; -struct ConstraintAddr { - int ipkTop; /* Subroutine for rowid constraint check */ - int upsertTop; /* Label for upsert constraint check subroutine */ - int upsertTop2; /* Copy of upsertTop not cleared by the call */ - int upsertBtm; /* upsert constraint returns to this label */ - int ipkBtm; /* Return opcode rowid constraint check */ +typedef struct IndexListTerm IndexListTerm; +typedef struct IndexIterator IndexIterator; +struct IndexIterator { + int eType; /* 0 for Index.pNext list. 1 for an array of IndexListTerm */ + int i; /* Index of the current item from the list */ + union { + struct { /* Use this object for eType==0: A Index.pNext list */ + Index *pIdx; /* The current Index */ + } lx; + struct { /* Use this object for eType==1; Array of IndexListTerm */ + int nIdx; /* Size of the array */ + IndexListTerm *aIdx; /* Array of IndexListTerms */ + } ax; + } u; }; -/* -** Generate any OP_Goto operations needed to cause constraints to be -** run that haven't already been run. +/* When IndexIterator.eType==1, then each index is an array of instances +** of the following object */ -static void reorderConstraintChecks(Vdbe *v, ConstraintAddr *p){ - if( p->upsertTop ){ - testcase( sqlite3VdbeLabelHasBeenResolved(v, p->upsertTop) ); - sqlite3VdbeGoto(v, p->upsertTop); - VdbeComment((v, "call upsert subroutine")); - sqlite3VdbeResolveLabel(v, p->upsertBtm); - p->upsertTop = 0; +struct IndexListTerm { + Index *p; /* The index */ + int ix; /* Which entry in the original Table.pIndex list is this index*/ +}; + +/* Return the first index on the list */ +static Index *indexIteratorFirst(IndexIterator *pIter, int *pIx){ + assert( pIter->i==0 ); + if( pIter->eType ){ + *pIx = pIter->u.ax.aIdx[0].ix; + return pIter->u.ax.aIdx[0].p; + }else{ + *pIx = 0; + return pIter->u.lx.pIdx; } - if( p->ipkTop ){ - sqlite3VdbeGoto(v, p->ipkTop); - VdbeComment((v, "call rowid unique-check subroutine")); - sqlite3VdbeJumpHere(v, p->ipkBtm); - p->ipkTop = 0; +} + +/* Return the next index from the list. Return NULL when out of indexes */ +static Index *indexIteratorNext(IndexIterator *pIter, int *pIx){ + if( pIter->eType ){ + int i = ++pIter->i; + if( i>=pIter->u.ax.nIdx ){ + *pIx = i; + return 0; + } + *pIx = pIter->u.ax.aIdx[i].ix; + return pIter->u.ax.aIdx[i].p; + }else{ + ++(*pIx); + pIter->u.lx.pIdx = pIter->u.lx.pIdx->pNext; + return pIter->u.lx.pIdx; } } @@ -114458,6 +132403,14 @@ static void reorderConstraintChecks(Vdbe *v, ConstraintAddr *p){ ** the same as the order of indices on the linked list of indices ** at pTab->pIndex. ** +** (2019-05-07) The generated code also creates a new record for the +** main table, if pTab is a rowid table, and stores that record in the +** register identified by aRegIdx[nIdx] - in other words in the first +** entry of aRegIdx[] past the last index. It is important that the +** record be generated during constraint checks to avoid affinity changes +** to the register content that occur after constraint checks but before +** the new record is inserted. +** ** The caller must have already opened writeable cursors on the main ** table and all applicable indices (that is to say, all indices for which ** aRegIdx[] is not zero). iDataCur is the cursor for the main table when @@ -114521,33 +132474,41 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( int *aiChng, /* column i is unchanged if aiChng[i]<0 */ Upsert *pUpsert /* ON CONFLICT clauses, if any. NULL otherwise */ ){ - Vdbe *v; /* VDBE under constrution */ + Vdbe *v; /* VDBE under construction */ Index *pIdx; /* Pointer to one of the indices */ - Index *pPk = 0; /* The PRIMARY KEY index */ + Index *pPk = 0; /* The PRIMARY KEY index for WITHOUT ROWID tables */ sqlite3 *db; /* Database connection */ int i; /* loop counter */ int ix; /* Index loop counter */ int nCol; /* Number of columns */ int onError; /* Conflict resolution strategy */ - int addr1; /* Address of jump instruction */ int seenReplace = 0; /* True if REPLACE is used to resolve INT PK conflict */ int nPkField; /* Number of fields in PRIMARY KEY. 1 for ROWID tables */ - ConstraintAddr sAddr;/* Address information for constraint reordering */ - Index *pUpIdx = 0; /* Index to which to apply the upsert */ - u8 isUpdate; /* True if this is an UPDATE operation */ + Upsert *pUpsertClause = 0; /* The specific ON CONFLICT clause for pIdx */ + u8 isUpdate; /* True if this is an UPDATE operation */ u8 bAffinityDone = 0; /* True if the OP_Affinity operation has been run */ - int upsertBypass = 0; /* Address of Goto to bypass upsert subroutine */ + int upsertIpkReturn = 0; /* Address of Goto at end of IPK uniqueness check */ + int upsertIpkDelay = 0; /* Address of Goto to bypass initial IPK check */ + int ipkTop = 0; /* Top of the IPK uniqueness check */ + int ipkBottom = 0; /* OP_Goto at the end of the IPK uniqueness check */ + /* Variables associated with retesting uniqueness constraints after + ** replace triggers fire have run */ + int regTrigCnt; /* Register used to count replace trigger invocations */ + int addrRecheck = 0; /* Jump here to recheck all uniqueness constraints */ + int lblRecheckOk = 0; /* Each recheck jumps to this label if it passes */ + Trigger *pTrigger; /* List of DELETE triggers on the table pTab */ + int nReplaceTrig = 0; /* Number of replace triggers coded */ + IndexIterator sIdxIter; /* Index iterator */ isUpdate = regOldData!=0; db = pParse->db; - v = sqlite3GetVdbe(pParse); + v = pParse->pVdbe; assert( v!=0 ); - assert( pTab->pSelect==0 ); /* This table is not a VIEW */ + assert( !IsView(pTab) ); /* This table is not a VIEW */ nCol = pTab->nCol; - memset(&sAddr, 0, sizeof(sAddr)); - + /* pPk is the PRIMARY KEY index for WITHOUT ROWID tables and NULL for - ** normal rowid tables. nPkField is the number of key fields in the + ** normal rowid tables. nPkField is the number of key fields in the ** pPk index or 1 for a rowid table. In other words, nPkField is the ** number of fields in the true primary key of the table. */ if( HasRowid(pTab) ){ @@ -114564,56 +132525,105 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( /* Test all NOT NULL constraints. */ - for(i=0; iiPKey ){ - continue; /* ROWID is never NULL */ - } - if( aiChng && aiChng[i]<0 ){ - /* Don't bother checking for NOT NULL on columns that do not change */ - continue; - } - onError = pTab->aCol[i].notNull; - if( onError==OE_None ) continue; /* This column is allowed to be NULL */ - if( overrideError!=OE_Default ){ - onError = overrideError; - }else if( onError==OE_Default ){ - onError = OE_Abort; - } - if( onError==OE_Replace && pTab->aCol[i].pDflt==0 ){ - onError = OE_Abort; - } - assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail - || onError==OE_Ignore || onError==OE_Replace ); - switch( onError ){ - case OE_Abort: - sqlite3MayAbort(pParse); - /* Fall through */ - case OE_Rollback: - case OE_Fail: { - char *zMsg = sqlite3MPrintf(db, "%s.%s", pTab->zName, - pTab->aCol[i].zName); - sqlite3VdbeAddOp3(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL, onError, - regNewData+1+i); - sqlite3VdbeAppendP4(v, zMsg, P4_DYNAMIC); - sqlite3VdbeChangeP5(v, P5_ConstraintNotNull); - VdbeCoverage(v); + if( pTab->tabFlags & TF_HasNotNull ){ + int b2ndPass = 0; /* True if currently running 2nd pass */ + int nSeenReplace = 0; /* Number of ON CONFLICT REPLACE operations */ + int nGenerated = 0; /* Number of generated columns with NOT NULL */ + while(1){ /* Make 2 passes over columns. Exit loop via "break" */ + for(i=0; iaCol[i]; /* The column to check for NOT NULL */ + int isGenerated; /* non-zero if column is generated */ + onError = pCol->notNull; + if( onError==OE_None ) continue; /* No NOT NULL on this column */ + if( i==pTab->iPKey ){ + continue; /* ROWID is never NULL */ + } + isGenerated = pCol->colFlags & COLFLAG_GENERATED; + if( isGenerated && !b2ndPass ){ + nGenerated++; + continue; /* Generated columns processed on 2nd pass */ + } + if( aiChng && aiChng[i]<0 && !isGenerated ){ + /* Do not check NOT NULL on columns that do not change */ + continue; + } + if( overrideError!=OE_Default ){ + onError = overrideError; + }else if( onError==OE_Default ){ + onError = OE_Abort; + } + if( onError==OE_Replace ){ + if( b2ndPass /* REPLACE becomes ABORT on the 2nd pass */ + || pCol->iDflt==0 /* REPLACE is ABORT if no DEFAULT value */ + ){ + testcase( pCol->colFlags & COLFLAG_VIRTUAL ); + testcase( pCol->colFlags & COLFLAG_STORED ); + testcase( pCol->colFlags & COLFLAG_GENERATED ); + onError = OE_Abort; + }else{ + assert( !isGenerated ); + } + }else if( b2ndPass && !isGenerated ){ + continue; + } + assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail + || onError==OE_Ignore || onError==OE_Replace ); + testcase( i!=sqlite3TableColumnToStorage(pTab, i) ); + iReg = sqlite3TableColumnToStorage(pTab, i) + regNewData + 1; + switch( onError ){ + case OE_Replace: { + int addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, iReg); + VdbeCoverage(v); + assert( (pCol->colFlags & COLFLAG_GENERATED)==0 ); + nSeenReplace++; + sqlite3ExprCodeCopy(pParse, + sqlite3ColumnExpr(pTab, pCol), iReg); + sqlite3VdbeJumpHere(v, addr1); + break; + } + case OE_Abort: + sqlite3MayAbort(pParse); + /* no break */ deliberate_fall_through + case OE_Rollback: + case OE_Fail: { + char *zMsg = sqlite3MPrintf(db, "%s.%s", pTab->zName, + pCol->zCnName); + testcase( zMsg==0 && db->mallocFailed==0 ); + sqlite3VdbeAddOp3(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL, + onError, iReg); + sqlite3VdbeAppendP4(v, zMsg, P4_DYNAMIC); + sqlite3VdbeChangeP5(v, P5_ConstraintNotNull); + VdbeCoverage(v); + break; + } + default: { + assert( onError==OE_Ignore ); + sqlite3VdbeAddOp2(v, OP_IsNull, iReg, ignoreDest); + VdbeCoverage(v); + break; + } + } /* end switch(onError) */ + } /* end loop i over columns */ + if( nGenerated==0 && nSeenReplace==0 ){ + /* If there are no generated columns with NOT NULL constraints + ** and no NOT NULL ON CONFLICT REPLACE constraints, then a single + ** pass is sufficient */ break; } - case OE_Ignore: { - sqlite3VdbeAddOp2(v, OP_IsNull, regNewData+1+i, ignoreDest); - VdbeCoverage(v); - break; + if( b2ndPass ) break; /* Never need more than 2 passes */ + b2ndPass = 1; +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( nSeenReplace>0 && (pTab->tabFlags & TF_HasGenerated)!=0 ){ + /* If any NOT NULL ON CONFLICT REPLACE constraints fired on the + ** first pass, recomputed values for all generated columns, as + ** those values might depend on columns affected by the REPLACE. + */ + sqlite3ComputeGeneratedColumns(pParse, regNewData+1, pTab); } - default: { - assert( onError==OE_Replace ); - addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regNewData+1+i); - VdbeCoverage(v); - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regNewData+1+i); - sqlite3VdbeJumpHere(v, addr1); - break; - } - } - } +#endif + } /* end of 2-pass loop */ + } /* end if( has-not-null-constraints ) */ /* Test all CHECK constraints */ @@ -114624,17 +132634,32 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( onError = overrideError!=OE_Default ? overrideError : OE_Abort; for(i=0; inExpr; i++){ int allOk; + Expr *pCopy; Expr *pExpr = pCheck->a[i].pExpr; - if( aiChng && checkConstraintUnchanged(pExpr, aiChng, pkChng) ) continue; - allOk = sqlite3VdbeMakeLabel(v); + if( aiChng + && !sqlite3ExprReferencesUpdatedColumn(pExpr, aiChng, pkChng) + ){ + /* The check constraints do not reference any of the columns being + ** updated so there is no point it verifying the check constraint */ + continue; + } + if( bAffinityDone==0 ){ + sqlite3TableAffinity(v, pTab, regNewData+1); + bAffinityDone = 1; + } + allOk = sqlite3VdbeMakeLabel(pParse); sqlite3VdbeVerifyAbortable(v, onError); - sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL); + pCopy = sqlite3ExprDup(db, pExpr, 0); + if( !db->mallocFailed ){ + sqlite3ExprIfTrue(pParse, pCopy, allOk, SQLITE_JUMPIFNULL); + } + sqlite3ExprDelete(db, pCopy); if( onError==OE_Ignore ){ sqlite3VdbeGoto(v, ignoreDest); }else{ - char *zName = pCheck->a[i].zName; - if( zName==0 ) zName = pTab->zName; - if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-15569-63625 */ + char *zName = pCheck->a[i].zEName; + assert( zName!=0 || pParse->db->mallocFailed ); + if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-26383-51744 */ sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_CHECK, onError, zName, P4_TRANSIENT, P5_ConstraintCheck); @@ -114648,8 +132673,8 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( /* UNIQUE and PRIMARY KEY constraints should be handled in the following ** order: ** - ** (1) OE_Abort, OE_Fail, OE_Rollback, OE_Ignore - ** (2) OE_Update + ** (1) OE_Update + ** (2) OE_Abort, OE_Fail, OE_Rollback, OE_Ignore ** (3) OE_Replace ** ** OE_Fail and OE_Ignore must happen before any changes are made. @@ -114658,6 +132683,11 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** could happen in any order, but they are grouped up front for ** convenience. ** + ** 2018-08-14: Ticket https://www.sqlite.org/src/info/908f001483982c43 + ** The order of constraints used to have OE_Update as (2) and OE_Abort + ** and so forth as (1). But apparently PostgreSQL checks the OE_Update + ** constraint before any others, so it had to be moved. + ** ** Constraint checking code is generated in this order: ** (A) The rowid constraint ** (B) Unique index constraints that do not have OE_Replace as their @@ -114668,20 +132698,107 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** list of indexes attached to a table puts all OE_Replace indexes last ** in the list. See sqlite3CreateIndex() for where that happens. */ - + sIdxIter.eType = 0; + sIdxIter.i = 0; + sIdxIter.u.ax.aIdx = 0; /* Silence harmless compiler warning */ + sIdxIter.u.lx.pIdx = pTab->pIndex; if( pUpsert ){ if( pUpsert->pUpsertTarget==0 ){ - /* An ON CONFLICT DO NOTHING clause, without a constraint-target. - ** Make all unique constraint resolution be OE_Ignore */ - assert( pUpsert->pUpsertSet==0 ); - overrideError = OE_Ignore; - pUpsert = 0; - }else if( (pUpIdx = pUpsert->pUpsertIdx)!=0 ){ - /* If the constraint-target is on some column other than - ** then ROWID, then we might need to move the UPSERT around - ** so that it occurs in the correct order. */ - sAddr.upsertTop = sAddr.upsertTop2 = sqlite3VdbeMakeLabel(v); - sAddr.upsertBtm = sqlite3VdbeMakeLabel(v); + /* There is just on ON CONFLICT clause and it has no constraint-target */ + assert( pUpsert->pNextUpsert==0 ); + if( pUpsert->isDoUpdate==0 ){ + /* A single ON CONFLICT DO NOTHING clause, without a constraint-target. + ** Make all unique constraint resolution be OE_Ignore */ + overrideError = OE_Ignore; + pUpsert = 0; + }else{ + /* A single ON CONFLICT DO UPDATE. Make all resolutions OE_Update */ + overrideError = OE_Update; + } + }else if( pTab->pIndex!=0 ){ + /* Otherwise, we'll need to run the IndexListTerm array version of the + ** iterator to ensure that all of the ON CONFLICT conditions are + ** checked first and in order. */ + int nIdx, jj; + u64 nByte; + Upsert *pTerm; + u8 *bUsed; + for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){ + assert( aRegIdx[nIdx]>0 ); + } + sIdxIter.eType = 1; + sIdxIter.u.ax.nIdx = nIdx; + nByte = (sizeof(IndexListTerm)+1)*nIdx + nIdx; + sIdxIter.u.ax.aIdx = sqlite3DbMallocZero(db, nByte); + if( sIdxIter.u.ax.aIdx==0 ) return; /* OOM */ + bUsed = (u8*)&sIdxIter.u.ax.aIdx[nIdx]; + pUpsert->pToFree = sIdxIter.u.ax.aIdx; + for(i=0, pTerm=pUpsert; pTerm; pTerm=pTerm->pNextUpsert){ + if( pTerm->pUpsertTarget==0 ) break; + if( pTerm->pUpsertIdx==0 ) continue; /* Skip ON CONFLICT for the IPK */ + jj = 0; + pIdx = pTab->pIndex; + while( ALWAYS(pIdx!=0) && pIdx!=pTerm->pUpsertIdx ){ + pIdx = pIdx->pNext; + jj++; + } + if( bUsed[jj] ) continue; /* Duplicate ON CONFLICT clause ignored */ + bUsed[jj] = 1; + sIdxIter.u.ax.aIdx[i].p = pIdx; + sIdxIter.u.ax.aIdx[i].ix = jj; + i++; + } + for(jj=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, jj++){ + if( bUsed[jj] ) continue; + sIdxIter.u.ax.aIdx[i].p = pIdx; + sIdxIter.u.ax.aIdx[i].ix = jj; + i++; + } + assert( i==nIdx ); + } + } + + /* Determine if it is possible that triggers (either explicitly coded + ** triggers or FK resolution actions) might run as a result of deletes + ** that happen when OE_Replace conflict resolution occurs. (Call these + ** "replace triggers".) If any replace triggers run, we will need to + ** recheck all of the uniqueness constraints after they have all run. + ** But on the recheck, the resolution is OE_Abort instead of OE_Replace. + ** + ** If replace triggers are a possibility, then + ** + ** (1) Allocate register regTrigCnt and initialize it to zero. + ** That register will count the number of replace triggers that + ** fire. Constraint recheck only occurs if the number is positive. + ** (2) Initialize pTrigger to the list of all DELETE triggers on pTab. + ** (3) Initialize addrRecheck and lblRecheckOk + ** + ** The uniqueness rechecking code will create a series of tests to run + ** in a second pass. The addrRecheck and lblRecheckOk variables are + ** used to link together these tests which are separated from each other + ** in the generate bytecode. + */ + if( (db->flags & (SQLITE_RecTriggers|SQLITE_ForeignKeys))==0 ){ + /* There are not DELETE triggers nor FK constraints. No constraint + ** rechecks are needed. */ + pTrigger = 0; + regTrigCnt = 0; + }else{ + if( db->flags&SQLITE_RecTriggers ){ + pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); + regTrigCnt = pTrigger!=0 || sqlite3FkRequired(pParse, pTab, 0, 0); + }else{ + pTrigger = 0; + regTrigCnt = sqlite3FkRequired(pParse, pTab, 0, 0); + } + if( regTrigCnt ){ + /* Replace triggers might exist. Allocate the counter and + ** initialize it to zero. */ + regTrigCnt = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 0, regTrigCnt); + VdbeComment((v, "trigger count")); + lblRecheckOk = sqlite3VdbeMakeLabel(pParse); + addrRecheck = lblRecheckOk; } } @@ -114689,7 +132806,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** exist in the table. */ if( pkChng && pPk==0 ){ - int addrRowidOk = sqlite3VdbeMakeLabel(v); + int addrRowidOk = sqlite3VdbeMakeLabel(pParse); /* Figure out what action to take in case of a rowid collision */ onError = pTab->keyConf; @@ -114700,11 +132817,20 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( } /* figure out whether or not upsert applies in this case */ - if( pUpsert && pUpsert->pUpsertIdx==0 ){ - if( pUpsert->pUpsertSet==0 ){ - onError = OE_Ignore; /* DO NOTHING is the same as INSERT OR IGNORE */ - }else{ - onError = OE_Update; /* DO UPDATE */ + if( pUpsert ){ + pUpsertClause = sqlite3UpsertOfIndex(pUpsert,0); + if( pUpsertClause!=0 ){ + if( pUpsertClause->isDoUpdate==0 ){ + onError = OE_Ignore; /* DO NOTHING is the same as INSERT OR IGNORE */ + }else{ + onError = OE_Update; /* DO UPDATE */ + } + } + if( pUpsertClause!=pUpsert ){ + /* The first ON CONFLICT clause has a conflict target other than + ** the IPK. We have to jump ahead to that first ON CONFLICT clause + ** and then come back here and deal with the IPK afterwards */ + upsertIpkDelay = sqlite3VdbeAddOp0(v, OP_Goto); } } @@ -114713,16 +132839,13 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** to defer the running of the rowid conflict checking until after ** the UNIQUE constraints have run. */ - assert( OE_Update>OE_Replace ); - assert( OE_Ignore=OE_Replace - && (pUpsert || onError!=overrideError) - && pTab->pIndex + if( onError==OE_Replace /* IPK rule is REPLACE */ + && onError!=overrideError /* Rules for other constraints are different */ + && pTab->pIndex /* There exist other constraints */ + && !upsertIpkDelay /* IPK check already deferred by UPSERT */ ){ - sAddr.ipkTop = sqlite3VdbeAddOp0(v, OP_Goto)+1; + ipkTop = sqlite3VdbeAddOp0(v, OP_Goto)+1; + VdbeComment((v, "defer IPK REPLACE until last")); } if( isUpdate ){ @@ -114744,7 +132867,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( switch( onError ){ default: { onError = OE_Abort; - /* Fall thru into the next case */ + /* no break */ deliberate_fall_through } case OE_Rollback: case OE_Abort: @@ -114762,10 +132885,10 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** the triggers and remove both the table and index b-tree entries. ** ** Otherwise, if there are no triggers or the recursive-triggers - ** flag is not set, but the table has one or more indexes, call - ** GenerateRowIndexDelete(). This removes the index b-tree entries - ** only. The table b-tree entry will be replaced by the new entry - ** when it is inserted. + ** flag is not set, but the table has one or more indexes, call + ** GenerateRowIndexDelete(). This removes the index b-tree entries + ** only. The table b-tree entry will be replaced by the new entry + ** when it is inserted. ** ** If either GenerateRowDelete() or GenerateRowIndexDelete() is called, ** also invoke MultiWrite() to indicate that this VDBE may require @@ -114778,14 +132901,12 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** to run without a statement journal if there are no indexes on the ** table. */ - Trigger *pTrigger = 0; - if( db->flags&SQLITE_RecTriggers ){ - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - } - if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){ + if( regTrigCnt ){ sqlite3MultiWrite(pParse); sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, regNewData, 1, 0, OE_Replace, 1, -1); + sqlite3VdbeAddOp2(v, OP_AddImm, regTrigCnt, 1); /* incr trigger cnt */ + nReplaceTrig++; }else{ #ifdef SQLITE_ENABLE_PREUPDATE_HOOK assert( HasRowid(pTab) ); @@ -114807,7 +132928,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( #ifndef SQLITE_OMIT_UPSERT case OE_Update: { sqlite3UpsertDoUpdate(pParse, pUpsert, pTab, 0, iDataCur); - /* Fall through */ + /* no break */ deliberate_fall_through } #endif case OE_Ignore: { @@ -114817,9 +132938,11 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( } } sqlite3VdbeResolveLabel(v, addrRowidOk); - if( sAddr.ipkTop ){ - sAddr.ipkBtm = sqlite3VdbeAddOp0(v, OP_Goto); - sqlite3VdbeJumpHere(v, sAddr.ipkTop-1); + if( pUpsert && pUpsertClause!=pUpsert ){ + upsertIpkReturn = sqlite3VdbeAddOp0(v, OP_Goto); + }else if( ipkTop ){ + ipkBottom = sqlite3VdbeAddOp0(v, OP_Goto); + sqlite3VdbeJumpHere(v, ipkTop-1); } } @@ -114830,26 +132953,29 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** This loop also handles the case of the PRIMARY KEY index for a ** WITHOUT ROWID table. */ - for(ix=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, ix++){ - int regIdx; /* Range of registers hold conent for pIdx */ + for(pIdx = indexIteratorFirst(&sIdxIter, &ix); + pIdx; + pIdx = indexIteratorNext(&sIdxIter, &ix) + ){ + int regIdx; /* Range of registers holding content for pIdx */ int regR; /* Range of registers holding conflicting PK */ int iThisCur; /* Cursor for this UNIQUE index */ int addrUniqueOk; /* Jump here if the UNIQUE constraint is satisfied */ + int addrConflictCk; /* First opcode in the conflict check logic */ if( aRegIdx[ix]==0 ) continue; /* Skip indices that do not change */ - if( pUpIdx==pIdx ){ - addrUniqueOk = sAddr.upsertBtm; - upsertBypass = sqlite3VdbeGoto(v, 0); - VdbeComment((v, "Skip upsert subroutine")); - sqlite3VdbeResolveLabel(v, sAddr.upsertTop2); - }else{ - addrUniqueOk = sqlite3VdbeMakeLabel(v); + if( pUpsert ){ + pUpsertClause = sqlite3UpsertOfIndex(pUpsert, pIdx); + if( upsertIpkDelay && pUpsertClause==pUpsert ){ + sqlite3VdbeJumpHere(v, upsertIpkDelay); + } } - VdbeNoopComment((v, "uniqueness check for %s", pIdx->zName)); + addrUniqueOk = sqlite3VdbeMakeLabel(pParse); if( bAffinityDone==0 ){ sqlite3TableAffinity(v, pTab, regNewData+1); bAffinityDone = 1; } + VdbeNoopComment((v, "prep index %s", pIdx->zName)); iThisCur = iIdxCur+ix; @@ -114874,23 +133000,27 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[i].pExpr, regIdx+i); pParse->iSelfTab = 0; VdbeComment((v, "%s column %d", pIdx->zName, i)); + }else if( iField==XN_ROWID || iField==pTab->iPKey ){ + x = regNewData; + sqlite3VdbeAddOp2(v, OP_IntCopy, x, regIdx+i); + VdbeComment((v, "rowid")); }else{ - if( iField==XN_ROWID || iField==pTab->iPKey ){ - x = regNewData; - }else{ - x = iField + regNewData + 1; - } - sqlite3VdbeAddOp2(v, iField<0 ? OP_IntCopy : OP_SCopy, x, regIdx+i); - VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName)); + testcase( sqlite3TableColumnToStorage(pTab, iField)!=iField ); + x = sqlite3TableColumnToStorage(pTab, iField) + regNewData + 1; + sqlite3VdbeAddOp2(v, OP_SCopy, x, regIdx+i); + VdbeComment((v, "%s", pTab->aCol[iField].zCnName)); } } sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn, aRegIdx[ix]); VdbeComment((v, "for %s", pIdx->zName)); #ifdef SQLITE_ENABLE_NULL_TRIM - if( pIdx->idxType==2 ) sqlite3SetMakeRecordP5(v, pIdx->pTable); + if( pIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){ + sqlite3SetMakeRecordP5(v, pIdx->pTable); + } #endif + sqlite3VdbeReleaseRegisters(pParse, regIdx, pIdx->nColumn, 0, 0); - /* In an UPDATE operation, if this index is the PRIMARY KEY index + /* In an UPDATE operation, if this index is the PRIMARY KEY index ** of a WITHOUT ROWID table and there has been no change the ** primary key, then no collision is possible. The collision detection ** logic below can all be skipped. */ @@ -114901,7 +133031,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( /* Find out what action to take in case there is a uniqueness conflict */ onError = pIdx->onError; - if( onError==OE_None ){ + if( onError==OE_None ){ sqlite3VdbeResolveLabel(v, addrUniqueOk); continue; /* pIdx is not a UNIQUE index */ } @@ -114912,50 +133042,47 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( } /* Figure out if the upsert clause applies to this index */ - if( pUpIdx==pIdx ){ - if( pUpsert->pUpsertSet==0 ){ + if( pUpsertClause ){ + if( pUpsertClause->isDoUpdate==0 ){ onError = OE_Ignore; /* DO NOTHING is the same as INSERT OR IGNORE */ }else{ onError = OE_Update; /* DO UPDATE */ } } - /* Invoke subroutines to handle IPK replace and upsert prior to running - ** the first REPLACE constraint check. */ - if( onError==OE_Replace ){ - testcase( sAddr.ipkTop ); - testcase( sAddr.upsertTop - && sqlite3VdbeLabelHasBeenResolved(v,sAddr.upsertTop) ); - reorderConstraintChecks(v, &sAddr); - } - /* Collision detection may be omitted if all of the following are true: ** (1) The conflict resolution algorithm is REPLACE ** (2) The table is a WITHOUT ROWID table ** (3) There are no secondary indexes on the table ** (4) No delete triggers need to be fired if there is a conflict ** (5) No FK constraint counters need to be updated if a conflict occurs. - */ + ** + ** This is not possible for ENABLE_PREUPDATE_HOOK builds, as the row + ** must be explicitly deleted in order to ensure any pre-update hook + ** is invoked. */ + assert( IsOrdinaryTable(pTab) ); +#ifndef SQLITE_ENABLE_PREUPDATE_HOOK if( (ix==0 && pIdx->pNext==0) /* Condition 3 */ && pPk==pIdx /* Condition 2 */ && onError==OE_Replace /* Condition 1 */ && ( 0==(db->flags&SQLITE_RecTriggers) || /* Condition 4 */ 0==sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0)) && ( 0==(db->flags&SQLITE_ForeignKeys) || /* Condition 5 */ - (0==pTab->pFKey && 0==sqlite3FkReferences(pTab))) + (0==pTab->u.tab.pFKey && 0==sqlite3FkReferences(pTab))) ){ sqlite3VdbeResolveLabel(v, addrUniqueOk); continue; } +#endif /* ifndef SQLITE_ENABLE_PREUPDATE_HOOK */ /* Check to see if the new index entry will be unique */ - sqlite3ExprCachePush(pParse); sqlite3VdbeVerifyAbortable(v, onError); - sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk, - regIdx, pIdx->nKeyCol); VdbeCoverage(v); + addrConflictCk = + sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk, + regIdx, pIdx->nKeyCol); VdbeCoverage(v); /* Generate code to handle collisions */ - regR = (pIdx==pPk) ? regIdx : sqlite3GetTempRange(pParse, nPkField); + regR = pIdx==pPk ? regIdx : sqlite3GetTempRange(pParse, nPkField); if( isUpdate || onError==OE_Replace ){ if( HasRowid(pTab) ){ sqlite3VdbeAddOp2(v, OP_IdxRowid, iThisCur, regR); @@ -114973,16 +133100,16 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( if( pIdx!=pPk ){ for(i=0; inKeyCol; i++){ assert( pPk->aiColumn[i]>=0 ); - x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]); + x = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[i]); sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i); VdbeComment((v, "%s.%s", pTab->zName, - pTab->aCol[pPk->aiColumn[i]].zName)); + pTab->aCol[pPk->aiColumn[i]].zCnName)); } } if( isUpdate ){ - /* If currently processing the PRIMARY KEY of a WITHOUT ROWID + /* If currently processing the PRIMARY KEY of a WITHOUT ROWID ** table, only conflict if the new PRIMARY KEY values are actually - ** different from the old. + ** different from the old. See TH3 withoutrowid04.test. ** ** For a UNIQUE index, only conflict if the PRIMARY KEY values ** of the matched index row are different from the original PRIMARY @@ -114990,7 +133117,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( int addrJump = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol; int op = OP_Ne; int regCmp = (IsPrimaryKeyIndex(pIdx) ? regIdx : regR); - + for(i=0; inKeyCol; i++){ char *p4 = (char*)sqlite3LocateCollSeq(pParse, pPk->azColl[i]); x = pPk->aiColumn[i]; @@ -114999,7 +133126,8 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( addrJump = addrUniqueOk; op = OP_Eq; } - sqlite3VdbeAddOp4(v, op, + x = sqlite3TableColumnToStorage(pTab, x); + sqlite3VdbeAddOp4(v, op, regOldData+1+x, addrJump, regCmp+i, p4, P4_COLLSEQ ); sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); @@ -115026,7 +133154,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( #ifndef SQLITE_OMIT_UPSERT case OE_Update: { sqlite3UpsertDoUpdate(pParse, pUpsert, pTab, pIdx, iIdxCur+ix); - /* Fall through */ + /* no break */ deliberate_fall_through } #endif case OE_Ignore: { @@ -115035,35 +133163,128 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( break; } default: { - Trigger *pTrigger = 0; + int nConflictCk; /* Number of opcodes in conflict check logic */ + assert( onError==OE_Replace ); - if( db->flags&SQLITE_RecTriggers ){ - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - } - if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){ + nConflictCk = sqlite3VdbeCurrentAddr(v) - addrConflictCk; + assert( nConflictCk>0 || db->mallocFailed ); + testcase( nConflictCk<=0 ); + testcase( nConflictCk>1 ); + if( regTrigCnt ){ sqlite3MultiWrite(pParse); + nReplaceTrig++; + } + if( pTrigger && isUpdate ){ + sqlite3VdbeAddOp1(v, OP_CursorLock, iDataCur); } sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, regR, nPkField, 0, OE_Replace, (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur); + if( pTrigger && isUpdate ){ + sqlite3VdbeAddOp1(v, OP_CursorUnlock, iDataCur); + } + if( regTrigCnt ){ + int addrBypass; /* Jump destination to bypass recheck logic */ + + sqlite3VdbeAddOp2(v, OP_AddImm, regTrigCnt, 1); /* incr trigger cnt */ + addrBypass = sqlite3VdbeAddOp0(v, OP_Goto); /* Bypass recheck */ + VdbeComment((v, "bypass recheck")); + + /* Here we insert code that will be invoked after all constraint + ** checks have run, if and only if one or more replace triggers + ** fired. */ + sqlite3VdbeResolveLabel(v, lblRecheckOk); + lblRecheckOk = sqlite3VdbeMakeLabel(pParse); + if( pIdx->pPartIdxWhere ){ + /* Bypass the recheck if this partial index is not defined + ** for the current row */ + sqlite3VdbeAddOp2(v, OP_IsNull, regIdx-1, lblRecheckOk); + VdbeCoverage(v); + } + /* Copy the constraint check code from above, except change + ** the constraint-ok jump destination to be the address of + ** the next retest block */ + while( nConflictCk>0 ){ + VdbeOp x; /* Conflict check opcode to copy */ + /* The sqlite3VdbeAddOp4() call might reallocate the opcode array. + ** Hence, make a complete copy of the opcode, rather than using + ** a pointer to the opcode. */ + x = *sqlite3VdbeGetOp(v, addrConflictCk); + if( x.opcode!=OP_IdxRowid ){ + int p2; /* New P2 value for copied conflict check opcode */ + const char *zP4; + if( sqlite3OpcodeProperty[x.opcode]&OPFLG_JUMP ){ + p2 = lblRecheckOk; + }else{ + p2 = x.p2; + } + zP4 = x.p4type==P4_INT32 ? SQLITE_INT_TO_PTR(x.p4.i) : x.p4.z; + sqlite3VdbeAddOp4(v, x.opcode, x.p1, p2, x.p3, zP4, x.p4type); + sqlite3VdbeChangeP5(v, x.p5); + VdbeCoverageIf(v, p2!=x.p2); + } + nConflictCk--; + addrConflictCk++; + } + /* If the retest fails, issue an abort */ + sqlite3UniqueConstraint(pParse, OE_Abort, pIdx); + + sqlite3VdbeJumpHere(v, addrBypass); /* Terminate the recheck bypass */ + } seenReplace = 1; break; } } - if( pUpIdx==pIdx ){ - sqlite3VdbeJumpHere(v, upsertBypass); - }else{ - sqlite3VdbeResolveLabel(v, addrUniqueOk); - } - sqlite3ExprCachePop(pParse); + sqlite3VdbeResolveLabel(v, addrUniqueOk); if( regR!=regIdx ) sqlite3ReleaseTempRange(pParse, regR, nPkField); - + if( pUpsertClause + && upsertIpkReturn + && sqlite3UpsertNextIsIPK(pUpsertClause) + ){ + sqlite3VdbeGoto(v, upsertIpkDelay+1); + sqlite3VdbeJumpHere(v, upsertIpkReturn); + upsertIpkReturn = 0; + } } - testcase( sAddr.ipkTop!=0 ); - testcase( sAddr.upsertTop - && sqlite3VdbeLabelHasBeenResolved(v,sAddr.upsertTop) ); - reorderConstraintChecks(v, &sAddr); - + + /* If the IPK constraint is a REPLACE, run it last */ + if( ipkTop ){ + sqlite3VdbeGoto(v, ipkTop); + VdbeComment((v, "Do IPK REPLACE")); + assert( ipkBottom>0 ); + sqlite3VdbeJumpHere(v, ipkBottom); + } + + /* Recheck all uniqueness constraints after replace triggers have run */ + testcase( regTrigCnt!=0 && nReplaceTrig==0 ); + assert( regTrigCnt!=0 || nReplaceTrig==0 ); + if( nReplaceTrig ){ + sqlite3VdbeAddOp2(v, OP_IfNot, regTrigCnt, lblRecheckOk);VdbeCoverage(v); + if( !pPk ){ + if( isUpdate ){ + sqlite3VdbeAddOp3(v, OP_Eq, regNewData, addrRecheck, regOldData); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); + VdbeCoverage(v); + } + sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, addrRecheck, regNewData); + VdbeCoverage(v); + sqlite3RowidConstraint(pParse, OE_Abort, pTab); + }else{ + sqlite3VdbeGoto(v, addrRecheck); + } + sqlite3VdbeResolveLabel(v, lblRecheckOk); + } + + /* Generate the table record */ + if( HasRowid(pTab) ){ + int regRec = aRegIdx[ix]; + sqlite3VdbeAddOp3(v, OP_MakeRecord, regNewData+1, pTab->nNVCol, regRec); + sqlite3SetMakeRecordP5(v, pTab); + if( !bAffinityDone ){ + sqlite3TableAffinity(v, pTab, 0); + } + } + *pbMayReplace = seenReplace; VdbeModuleComment((v, "END: GenCnstCks(%d)", seenReplace)); } @@ -115083,13 +133304,39 @@ SQLITE_PRIVATE void sqlite3SetMakeRecordP5(Vdbe *v, Table *pTab){ if( pTab->pSchema->file_format<2 ) return; for(i=pTab->nCol-1; i>0; i--){ - if( pTab->aCol[i].pDflt!=0 ) break; + if( pTab->aCol[i].iDflt!=0 ) break; if( pTab->aCol[i].colFlags & COLFLAG_PRIMKEY ) break; } sqlite3VdbeChangeP5(v, i+1); } #endif +/* +** Table pTab is a WITHOUT ROWID table that is being written to. The cursor +** number is iCur, and register regData contains the new record for the +** PK index. This function adds code to invoke the pre-update hook, +** if one is registered. +*/ +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +static void codeWithoutRowidPreupdate( + Parse *pParse, /* Parse context */ + Table *pTab, /* Table being updated */ + int iCur, /* Cursor number for table */ + int regData /* Data containing new record */ +){ + Vdbe *v = pParse->pVdbe; + int r = sqlite3GetTempReg(pParse); + assert( !HasRowid(pTab) ); + assert( 0==(pParse->db->mDbFlags & DBFLAG_Vacuum) || CORRUPT_DB ); + sqlite3VdbeAddOp2(v, OP_Integer, 0, r); + sqlite3VdbeAddOp4(v, OP_Insert, iCur, regData, r, (char*)pTab, P4_TABLE); + sqlite3VdbeChangeP5(v, OPFLAG_ISNOOP); + sqlite3ReleaseTempReg(pParse, r); +} +#else +# define codeWithoutRowidPreupdate(a,b,c,d) +#endif + /* ** This routine generates code to finish the INSERT or UPDATE operation ** that was started by a prior call to sqlite3GenerateConstraintChecks. @@ -115113,39 +133360,33 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( Vdbe *v; /* Prepared statements under construction */ Index *pIdx; /* An index being inserted or updated */ u8 pik_flags; /* flag values passed to the btree insert */ - int regData; /* Content registers (after the rowid) */ - int regRec; /* Register holding assembled record for the table */ int i; /* Loop counter */ - u8 bAffinityDone = 0; /* True if OP_Affinity has been run already */ assert( update_flags==0 || update_flags==OPFLAG_ISUPDATE || update_flags==(OPFLAG_ISUPDATE|OPFLAG_SAVEPOSITION) ); - v = sqlite3GetVdbe(pParse); + v = pParse->pVdbe; assert( v!=0 ); - assert( pTab->pSelect==0 ); /* This table is not a VIEW */ + assert( !IsView(pTab) ); /* This table is not a VIEW */ for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ + /* All REPLACE indexes are at the end of the list */ + assert( pIdx->onError!=OE_Replace + || pIdx->pNext==0 + || pIdx->pNext->onError==OE_Replace ); if( aRegIdx[i]==0 ) continue; - bAffinityDone = 1; if( pIdx->pPartIdxWhere ){ sqlite3VdbeAddOp2(v, OP_IsNull, aRegIdx[i], sqlite3VdbeCurrentAddr(v)+2); VdbeCoverage(v); } pik_flags = (useSeekResult ? OPFLAG_USESEEKRESULT : 0); if( IsPrimaryKeyIndex(pIdx) && !HasRowid(pTab) ){ - assert( pParse->nested==0 ); pik_flags |= OPFLAG_NCHANGE; pik_flags |= (update_flags & OPFLAG_SAVEPOSITION); -#ifdef SQLITE_ENABLE_PREUPDATE_HOOK if( update_flags==0 ){ - sqlite3VdbeAddOp4(v, OP_InsertInt, - iIdxCur+i, aRegIdx[i], 0, (char*)pTab, P4_TABLE - ); - sqlite3VdbeChangeP5(v, OPFLAG_ISNOOP); + codeWithoutRowidPreupdate(pParse, pTab, iIdxCur+i, aRegIdx[i]); } -#endif } sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iIdxCur+i, aRegIdx[i], aRegIdx[i]+1, @@ -115153,14 +133394,6 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( sqlite3VdbeChangeP5(v, pik_flags); } if( !HasRowid(pTab) ) return; - regData = regNewData + 1; - regRec = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regData, pTab->nCol, regRec); - sqlite3SetMakeRecordP5(v, pTab); - if( !bAffinityDone ){ - sqlite3TableAffinity(v, pTab, 0); - sqlite3ExprCacheAffinityChange(pParse, regData, pTab->nCol); - } if( pParse->nested ){ pik_flags = 0; }else{ @@ -115173,7 +133406,7 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( if( useSeekResult ){ pik_flags |= OPFLAG_USESEEKRESULT; } - sqlite3VdbeAddOp3(v, OP_Insert, iDataCur, regRec, regNewData); + sqlite3VdbeAddOp3(v, OP_Insert, iDataCur, aRegIdx[i], regNewData); if( !pParse->nested ){ sqlite3VdbeAppendP4(v, pTab, P4_TABLE); } @@ -115219,29 +133452,32 @@ SQLITE_PRIVATE int sqlite3OpenTableAndIndices( assert( op==OP_OpenRead || op==OP_OpenWrite ); assert( op==OP_OpenWrite || p5==0 ); + assert( piDataCur!=0 ); + assert( piIdxCur!=0 ); if( IsVirtual(pTab) ){ /* This routine is a no-op for virtual tables. Leave the output - ** variables *piDataCur and *piIdxCur uninitialized so that valgrind - ** can detect if they are used by mistake in the caller. */ + ** variables *piDataCur and *piIdxCur set to illegal cursor numbers + ** for improved error detection. */ + *piDataCur = *piIdxCur = -999; return 0; } iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - v = sqlite3GetVdbe(pParse); + v = pParse->pVdbe; assert( v!=0 ); if( iBase<0 ) iBase = pParse->nTab; iDataCur = iBase++; - if( piDataCur ) *piDataCur = iDataCur; + *piDataCur = iDataCur; if( HasRowid(pTab) && (aToOpen==0 || aToOpen[0]) ){ sqlite3OpenTable(pParse, iDataCur, iDb, pTab, op); - }else{ + }else if( pParse->db->noSharedCache==0 ){ sqlite3TableLock(pParse, iDb, pTab->tnum, op==OP_OpenWrite, pTab->zName); } - if( piIdxCur ) *piIdxCur = iBase; + *piIdxCur = iBase; for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ int iIdxCur = iBase++; assert( pIdx->pSchema==pTab->pSchema ); if( IsPrimaryKeyIndex(pIdx) && !HasRowid(pTab) ){ - if( piDataCur ) *piDataCur = iIdxCur; + *piDataCur = iIdxCur; p5 = 0; } if( aToOpen==0 || aToOpen[i+1] ){ @@ -115283,7 +133519,7 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){ int i; assert( pDest && pSrc ); assert( pDest->pTable!=pSrc->pTable ); - if( pDest->nKeyCol!=pSrc->nKeyCol ){ + if( pDest->nKeyCol!=pSrc->nKeyCol || pDest->nColumn!=pSrc->nColumn ){ return 0; /* Different number of columns */ } if( pDest->onError!=pSrc->onError ){ @@ -115320,7 +133556,7 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){ ** ** INSERT INTO tab1 SELECT * FROM tab2; ** -** The xfer optimization transfers raw records from tab2 over to tab1. +** The xfer optimization transfers raw records from tab2 over to tab1. ** Columns are not decoded and reassembled, which greatly improves ** performance. Raw index records are transferred in the same way. ** @@ -115351,7 +133587,7 @@ static int xferOptimization( ExprList *pEList; /* The result set of the SELECT */ Table *pSrc; /* The table in the FROM clause of SELECT */ Index *pSrcIdx, *pDestIdx; /* Source and destination indices */ - struct SrcList_item *pItem; /* An element of pSelect->pSrc */ + SrcItem *pItem; /* An element of pSelect->pSrc */ int i; /* Loop counter */ int iDbSrc; /* The database of pSrc */ int iSrc, iDest; /* Cursors from source and destination */ @@ -115363,18 +133599,13 @@ static int xferOptimization( int destHasUniqueIdx = 0; /* True if pDest has a UNIQUE index */ int regData, regRowid; /* Registers holding data and rowid */ - if( pSelect==0 ){ - return 0; /* Must be of the form INSERT INTO ... SELECT ... */ - } + assert( pSelect!=0 ); if( pParse->pWith || pSelect->pWith ){ /* Do not attempt to process this query if there are an WITH clauses ** attached to it. Proceeding may generate a false "no such table: xxx" ** error if pSelect reads from a CTE named "xxx". */ return 0; } - if( sqlite3TriggerList(pParse, pDest) ){ - return 0; /* tab1 must not have triggers */ - } #ifndef SQLITE_OMIT_VIRTUALTABLE if( IsVirtual(pDest) ){ return 0; /* tab1 must not be a virtual table */ @@ -115430,19 +133661,15 @@ static int xferOptimization( if( pSrc==0 ){ return 0; /* FROM clause does not contain a real table */ } - if( pSrc==pDest ){ + if( pSrc->tnum==pDest->tnum && pSrc->pSchema==pDest->pSchema ){ + testcase( pSrc!=pDest ); /* Possible due to bad sqlite_schema.rootpage */ return 0; /* tab1 and tab2 may not be the same table */ } if( HasRowid(pDest)!=HasRowid(pSrc) ){ return 0; /* source and destination must both be WITHOUT ROWID or not */ } -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pSrc) ){ - return 0; /* tab2 must not be a virtual table */ - } -#endif - if( pSrc->pSelect ){ - return 0; /* tab2 may not be a view */ + if( !IsOrdinaryTable(pSrc) ){ + return 0; /* tab2 may not be a view or virtual table */ } if( pDest->nCol!=pSrc->nCol ){ return 0; /* Number of columns must be the same in tab1 and tab2 */ @@ -115450,32 +133677,75 @@ static int xferOptimization( if( pDest->iPKey!=pSrc->iPKey ){ return 0; /* Both tables must have the same INTEGER PRIMARY KEY */ } + if( (pDest->tabFlags & TF_Strict)!=0 && (pSrc->tabFlags & TF_Strict)==0 ){ + return 0; /* Cannot feed from a non-strict into a strict table */ + } for(i=0; inCol; i++){ Column *pDestCol = &pDest->aCol[i]; Column *pSrcCol = &pSrc->aCol[i]; #ifdef SQLITE_ENABLE_HIDDEN_COLUMNS - if( (db->mDbFlags & DBFLAG_Vacuum)==0 - && (pDestCol->colFlags | pSrcCol->colFlags) & COLFLAG_HIDDEN + if( (db->mDbFlags & DBFLAG_Vacuum)==0 + && (pDestCol->colFlags | pSrcCol->colFlags) & COLFLAG_HIDDEN ){ return 0; /* Neither table may have __hidden__ columns */ } +#endif +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + /* Even if tables t1 and t2 have identical schemas, if they contain + ** generated columns, then this statement is semantically incorrect: + ** + ** INSERT INTO t2 SELECT * FROM t1; + ** + ** The reason is that generated column values are returned by the + ** the SELECT statement on the right but the INSERT statement on the + ** left wants them to be omitted. + ** + ** Nevertheless, this is a useful notational shorthand to tell SQLite + ** to do a bulk transfer all of the content from t1 over to t2. + ** + ** We could, in theory, disable this (except for internal use by the + ** VACUUM command where it is actually needed). But why do that? It + ** seems harmless enough, and provides a useful service. + */ + if( (pDestCol->colFlags & COLFLAG_GENERATED) != + (pSrcCol->colFlags & COLFLAG_GENERATED) ){ + return 0; /* Both columns have the same generated-column type */ + } + /* But the transfer is only allowed if both the source and destination + ** tables have the exact same expressions for generated columns. + ** This requirement could be relaxed for VIRTUAL columns, I suppose. + */ + if( (pDestCol->colFlags & COLFLAG_GENERATED)!=0 ){ + if( sqlite3ExprCompare(0, + sqlite3ColumnExpr(pSrc, pSrcCol), + sqlite3ColumnExpr(pDest, pDestCol), -1)!=0 ){ + testcase( pDestCol->colFlags & COLFLAG_VIRTUAL ); + testcase( pDestCol->colFlags & COLFLAG_STORED ); + return 0; /* Different generator expressions */ + } + } #endif if( pDestCol->affinity!=pSrcCol->affinity ){ return 0; /* Affinity must be the same on all columns */ } - if( sqlite3_stricmp(pDestCol->zColl, pSrcCol->zColl)!=0 ){ + if( sqlite3_stricmp(sqlite3ColumnColl(pDestCol), + sqlite3ColumnColl(pSrcCol))!=0 ){ return 0; /* Collating sequence must be the same on all columns */ } if( pDestCol->notNull && !pSrcCol->notNull ){ return 0; /* tab2 must be NOT NULL if tab1 is */ } /* Default values for second and subsequent columns need to match. */ - if( i>0 ){ - assert( pDestCol->pDflt==0 || pDestCol->pDflt->op==TK_SPAN ); - assert( pSrcCol->pDflt==0 || pSrcCol->pDflt->op==TK_SPAN ); - if( (pDestCol->pDflt==0)!=(pSrcCol->pDflt==0) - || (pDestCol->pDflt && strcmp(pDestCol->pDflt->u.zToken, - pSrcCol->pDflt->u.zToken)!=0) + if( (pDestCol->colFlags & COLFLAG_GENERATED)==0 && i>0 ){ + Expr *pDestExpr = sqlite3ColumnExpr(pDest, pDestCol); + Expr *pSrcExpr = sqlite3ColumnExpr(pSrc, pSrcCol); + assert( pDestExpr==0 || pDestExpr->op==TK_SPAN ); + assert( pDestExpr==0 || !ExprHasProperty(pDestExpr, EP_IntValue) ); + assert( pSrcExpr==0 || pSrcExpr->op==TK_SPAN ); + assert( pSrcExpr==0 || !ExprHasProperty(pSrcExpr, EP_IntValue) ); + if( (pDestExpr==0)!=(pSrcExpr==0) + || (pDestExpr!=0 && strcmp(pDestExpr->u.zToken, + pSrcExpr->u.zToken)!=0) ){ return 0; /* Default values must be the same for all columns */ } @@ -115491,6 +133761,13 @@ static int xferOptimization( if( pSrcIdx==0 ){ return 0; /* pDestIdx has no corresponding index in pSrc */ } + if( pSrcIdx->tnum==pDestIdx->tnum && pSrc->pSchema==pDest->pSchema + && sqlite3FaultSim(411)==SQLITE_OK ){ + /* The sqlite3FaultSim() call allows this corruption test to be + ** bypassed during testing, in order to exercise other corruption tests + ** further downstream. */ + return 0; /* Corrupt schema - two indexes on the same btree */ + } } #ifndef SQLITE_OMIT_CHECK if( pDest->pCheck && sqlite3ExprListCompare(pSrc->pCheck,pDest->pCheck,-1) ){ @@ -115498,14 +133775,15 @@ static int xferOptimization( } #endif #ifndef SQLITE_OMIT_FOREIGN_KEY - /* Disallow the transfer optimization if the destination table constains + /* Disallow the transfer optimization if the destination table contains ** any foreign key constraints. This is more restrictive than necessary. - ** But the main beneficiary of the transfer optimization is the VACUUM + ** But the main beneficiary of the transfer optimization is the VACUUM ** command, and the VACUUM command disables foreign key constraints. So ** the extra complication to make this rule less restrictive is probably ** not worth the effort. Ticket [6284df89debdfa61db8073e062908af0c9b6118e] */ - if( (db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){ + assert( IsOrdinaryTable(pDest) ); + if( (db->flags & SQLITE_ForeignKeys)!=0 && pDest->u.tab.pFKey!=0 ){ return 0; } #endif @@ -115527,6 +133805,7 @@ static int xferOptimization( iDest = pParse->nTab++; regAutoinc = autoIncBegin(pParse, iDbDest, pDest); regData = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp2(v, OP_Null, 0, regData); regRowid = sqlite3GetTempReg(pParse); sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite); assert( HasRowid(pDest) || destHasUniqueIdx ); @@ -115547,7 +133826,7 @@ static int xferOptimization( ** (If the destination is not initially empty, the rowid fields ** of index entries might need to change.) ** - ** (2) The destination has a unique index. (The xfer optimization + ** (2) The destination has a unique index. (The xfer optimization ** is unable to test uniqueness.) ** ** (3) onError is something other than OE_Abort and OE_Rollback. @@ -115562,29 +133841,42 @@ static int xferOptimization( emptySrcTest = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v); if( pDest->iPKey>=0 ){ addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); - sqlite3VdbeVerifyAbortable(v, onError); - addr2 = sqlite3VdbeAddOp3(v, OP_NotExists, iDest, 0, regRowid); - VdbeCoverage(v); - sqlite3RowidConstraint(pParse, onError, pDest); - sqlite3VdbeJumpHere(v, addr2); + if( (db->mDbFlags & DBFLAG_Vacuum)==0 ){ + sqlite3VdbeVerifyAbortable(v, onError); + addr2 = sqlite3VdbeAddOp3(v, OP_NotExists, iDest, 0, regRowid); + VdbeCoverage(v); + sqlite3RowidConstraint(pParse, onError, pDest); + sqlite3VdbeJumpHere(v, addr2); + } autoIncStep(pParse, regAutoinc, regRowid); - }else if( pDest->pIndex==0 ){ + }else if( pDest->pIndex==0 && !(db->mDbFlags & DBFLAG_VacuumInto) ){ addr1 = sqlite3VdbeAddOp2(v, OP_NewRowid, iDest, regRowid); }else{ addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); assert( (pDest->tabFlags & TF_Autoincrement)==0 ); } - sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); + if( db->mDbFlags & DBFLAG_Vacuum ){ sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest); - insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID| - OPFLAG_APPEND|OPFLAG_USESEEKRESULT; + insFlags = OPFLAG_APPEND|OPFLAG_USESEEKRESULT|OPFLAG_PREFORMAT; }else{ - insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND; + insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND|OPFLAG_PREFORMAT; + } +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + if( (db->mDbFlags & DBFLAG_Vacuum)==0 ){ + sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); + insFlags &= ~OPFLAG_PREFORMAT; + }else +#endif + { + sqlite3VdbeAddOp3(v, OP_RowCell, iDest, iSrc, regRowid); + } + sqlite3VdbeAddOp3(v, OP_Insert, iDest, regData, regRowid); + if( (db->mDbFlags & DBFLAG_Vacuum)==0 ){ + sqlite3VdbeChangeP4(v, -1, (char*)pDest, P4_TABLE); } - sqlite3VdbeAddOp4(v, OP_Insert, iDest, regData, regRowid, - (char*)pDest, P4_TABLE); sqlite3VdbeChangeP5(v, insFlags); + sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Close, iSrc, 0); sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); @@ -115606,19 +133898,18 @@ static int xferOptimization( sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR); VdbeComment((v, "%s", pDestIdx->zName)); addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v); - sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); if( db->mDbFlags & DBFLAG_Vacuum ){ /* This INSERT command is part of a VACUUM operation, which guarantees ** that the destination table is empty. If all indexed columns use ** collation sequence BINARY, then it can also be assumed that the - ** index will be populated by inserting keys in strictly sorted + ** index will be populated by inserting keys in strictly sorted ** order. In this case, instead of seeking within the b-tree as part ** of every OP_IdxInsert opcode, an OP_SeekEnd is added before the - ** OP_IdxInsert to seek to the point within the b-tree where each key + ** OP_IdxInsert to seek to the point within the b-tree where each key ** should be inserted. This is faster. ** ** If any of the indexed columns use a collation sequence other than - ** BINARY, this optimization is disabled. This is because the user + ** BINARY, this optimization is disabled. This is because the user ** might change the definition of a collation sequence and then run ** a VACUUM command. In that case keys may not be written in strictly ** sorted order. */ @@ -115627,13 +133918,22 @@ static int xferOptimization( if( sqlite3_stricmp(sqlite3StrBINARY, zColl) ) break; } if( i==pSrcIdx->nColumn ){ - idxInsFlags = OPFLAG_USESEEKRESULT; + idxInsFlags = OPFLAG_USESEEKRESULT|OPFLAG_PREFORMAT; sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest); + sqlite3VdbeAddOp2(v, OP_RowCell, iDest, iSrc); } - } - if( !HasRowid(pSrc) && pDestIdx->idxType==2 ){ + }else if( !HasRowid(pSrc) && pDestIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){ idxInsFlags |= OPFLAG_NCHANGE; } + if( idxInsFlags!=(OPFLAG_USESEEKRESULT|OPFLAG_PREFORMAT) ){ + sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); + if( (db->mDbFlags & DBFLAG_Vacuum)==0 + && !HasRowid(pDest) + && IsPrimaryKeyIndex(pDestIdx) + ){ + codeWithoutRowidPreupdate(pParse, pDest, iDest, regData); + } + } sqlite3VdbeAddOp2(v, OP_IdxInsert, iDest, regData); sqlite3VdbeChangeP5(v, idxInsFlags|OPFLAG_APPEND); sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); VdbeCoverage(v); @@ -115706,7 +134006,7 @@ SQLITE_API int sqlite3_exec( sqlite3_mutex_enter(db->mutex); sqlite3Error(db, SQLITE_OK); while( rc==SQLITE_OK && zSql[0] ){ - int nCol; + int nCol = 0; char **azVals = 0; pStmt = 0; @@ -115720,19 +134020,18 @@ SQLITE_API int sqlite3_exec( zSql = zLeftover; continue; } - callbackIsInit = 0; - nCol = sqlite3_column_count(pStmt); while( 1 ){ int i; rc = sqlite3_step(pStmt); /* Invoke the callback function if required */ - if( xCallback && (SQLITE_ROW==rc || + if( xCallback && (SQLITE_ROW==rc || (SQLITE_DONE==rc && !callbackIsInit && db->flags&SQLITE_NullCallback)) ){ if( !callbackIsInit ){ + nCol = sqlite3_column_count(pStmt); azCols = sqlite3DbMallocRaw(db, (2*nCol+1)*sizeof(const char*)); if( azCols==0 ){ goto exec_out; @@ -115837,7 +134136,7 @@ exec_out: ** This header file defines the SQLite interface for use by ** shared libraries that want to be imported as extensions into ** an SQLite instance. Shared libraries that intend to be loaded -** as extensions by SQLite should #include this file instead of +** as extensions by SQLite should #include this file instead of ** sqlite3.h. */ #ifndef SQLITE3EXT_H @@ -116135,6 +134434,59 @@ struct sqlite3_api_routines { int (*str_errcode)(sqlite3_str*); int (*str_length)(sqlite3_str*); char *(*str_value)(sqlite3_str*); + /* Version 3.25.0 and later */ + int (*create_window_function)(sqlite3*,const char*,int,int,void*, + void (*xStep)(sqlite3_context*,int,sqlite3_value**), + void (*xFinal)(sqlite3_context*), + void (*xValue)(sqlite3_context*), + void (*xInv)(sqlite3_context*,int,sqlite3_value**), + void(*xDestroy)(void*)); + /* Version 3.26.0 and later */ + const char *(*normalized_sql)(sqlite3_stmt*); + /* Version 3.28.0 and later */ + int (*stmt_isexplain)(sqlite3_stmt*); + int (*value_frombind)(sqlite3_value*); + /* Version 3.30.0 and later */ + int (*drop_modules)(sqlite3*,const char**); + /* Version 3.31.0 and later */ + sqlite3_int64 (*hard_heap_limit64)(sqlite3_int64); + const char *(*uri_key)(const char*,int); + const char *(*filename_database)(const char*); + const char *(*filename_journal)(const char*); + const char *(*filename_wal)(const char*); + /* Version 3.32.0 and later */ + const char *(*create_filename)(const char*,const char*,const char*, + int,const char**); + void (*free_filename)(const char*); + sqlite3_file *(*database_file_object)(const char*); + /* Version 3.34.0 and later */ + int (*txn_state)(sqlite3*,const char*); + /* Version 3.36.1 and later */ + sqlite3_int64 (*changes64)(sqlite3*); + sqlite3_int64 (*total_changes64)(sqlite3*); + /* Version 3.37.0 and later */ + int (*autovacuum_pages)(sqlite3*, + unsigned int(*)(void*,const char*,unsigned int,unsigned int,unsigned int), + void*, void(*)(void*)); + /* Version 3.38.0 and later */ + int (*error_offset)(sqlite3*); + int (*vtab_rhs_value)(sqlite3_index_info*,int,sqlite3_value**); + int (*vtab_distinct)(sqlite3_index_info*); + int (*vtab_in)(sqlite3_index_info*,int,int); + int (*vtab_in_first)(sqlite3_value*,sqlite3_value**); + int (*vtab_in_next)(sqlite3_value*,sqlite3_value**); + /* Version 3.39.0 and later */ + int (*deserialize)(sqlite3*,const char*,unsigned char*, + sqlite3_int64,sqlite3_int64,unsigned); + unsigned char *(*serialize)(sqlite3*,const char *,sqlite3_int64*, + unsigned int); + const char *(*db_name)(sqlite3*,int); + /* Version 3.40.0 and later */ + int (*value_encoding)(sqlite3_value*); + /* Version 3.41.0 and later */ + int (*is_interrupted)(sqlite3*); + /* Version 3.43.0 and later */ + int (*stmt_explain)(sqlite3_stmt*,int); }; /* @@ -116420,17 +134772,62 @@ typedef int (*sqlite3_loadext_entry)( #define sqlite3_str_errcode sqlite3_api->str_errcode #define sqlite3_str_length sqlite3_api->str_length #define sqlite3_str_value sqlite3_api->str_value +/* Version 3.25.0 and later */ +#define sqlite3_create_window_function sqlite3_api->create_window_function +/* Version 3.26.0 and later */ +#define sqlite3_normalized_sql sqlite3_api->normalized_sql +/* Version 3.28.0 and later */ +#define sqlite3_stmt_isexplain sqlite3_api->stmt_isexplain +#define sqlite3_value_frombind sqlite3_api->value_frombind +/* Version 3.30.0 and later */ +#define sqlite3_drop_modules sqlite3_api->drop_modules +/* Version 3.31.0 and later */ +#define sqlite3_hard_heap_limit64 sqlite3_api->hard_heap_limit64 +#define sqlite3_uri_key sqlite3_api->uri_key +#define sqlite3_filename_database sqlite3_api->filename_database +#define sqlite3_filename_journal sqlite3_api->filename_journal +#define sqlite3_filename_wal sqlite3_api->filename_wal +/* Version 3.32.0 and later */ +#define sqlite3_create_filename sqlite3_api->create_filename +#define sqlite3_free_filename sqlite3_api->free_filename +#define sqlite3_database_file_object sqlite3_api->database_file_object +/* Version 3.34.0 and later */ +#define sqlite3_txn_state sqlite3_api->txn_state +/* Version 3.36.1 and later */ +#define sqlite3_changes64 sqlite3_api->changes64 +#define sqlite3_total_changes64 sqlite3_api->total_changes64 +/* Version 3.37.0 and later */ +#define sqlite3_autovacuum_pages sqlite3_api->autovacuum_pages +/* Version 3.38.0 and later */ +#define sqlite3_error_offset sqlite3_api->error_offset +#define sqlite3_vtab_rhs_value sqlite3_api->vtab_rhs_value +#define sqlite3_vtab_distinct sqlite3_api->vtab_distinct +#define sqlite3_vtab_in sqlite3_api->vtab_in +#define sqlite3_vtab_in_first sqlite3_api->vtab_in_first +#define sqlite3_vtab_in_next sqlite3_api->vtab_in_next +/* Version 3.39.0 and later */ +#ifndef SQLITE_OMIT_DESERIALIZE +#define sqlite3_deserialize sqlite3_api->deserialize +#define sqlite3_serialize sqlite3_api->serialize +#endif +#define sqlite3_db_name sqlite3_api->db_name +/* Version 3.40.0 and later */ +#define sqlite3_value_encoding sqlite3_api->value_encoding +/* Version 3.41.0 and later */ +#define sqlite3_is_interrupted sqlite3_api->is_interrupted +/* Version 3.43.0 and later */ +#define sqlite3_stmt_explain sqlite3_api->stmt_explain #endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */ #if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) - /* This case when the file really is being compiled as a loadable + /* This case when the file really is being compiled as a loadable ** extension */ # define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0; # define SQLITE_EXTENSION_INIT2(v) sqlite3_api=v; # define SQLITE_EXTENSION_INIT3 \ extern const sqlite3_api_routines *sqlite3_api; #else - /* This case when the file is being statically linked into the + /* This case when the file is being statically linked into the ** application */ # define SQLITE_EXTENSION_INIT1 /*no-op*/ # define SQLITE_EXTENSION_INIT2(v) (void)v; /* unused parameter */ @@ -116508,6 +134905,7 @@ typedef int (*sqlite3_loadext_entry)( # define sqlite3_declare_vtab 0 # define sqlite3_vtab_config 0 # define sqlite3_vtab_on_conflict 0 +# define sqlite3_vtab_collation 0 #endif #ifdef SQLITE_OMIT_SHARED_CACHE @@ -116721,8 +135119,8 @@ static const sqlite3_api_routines sqlite3Apis = { sqlite3_memory_highwater, sqlite3_memory_used, #ifdef SQLITE_MUTEX_OMIT - 0, - 0, + 0, + 0, 0, 0, 0, @@ -116873,9 +135271,81 @@ static const sqlite3_api_routines sqlite3Apis = { sqlite3_str_reset, sqlite3_str_errcode, sqlite3_str_length, - sqlite3_str_value + sqlite3_str_value, + /* Version 3.25.0 and later */ + sqlite3_create_window_function, + /* Version 3.26.0 and later */ +#ifdef SQLITE_ENABLE_NORMALIZE + sqlite3_normalized_sql, +#else + 0, +#endif + /* Version 3.28.0 and later */ + sqlite3_stmt_isexplain, + sqlite3_value_frombind, + /* Version 3.30.0 and later */ +#ifndef SQLITE_OMIT_VIRTUALTABLE + sqlite3_drop_modules, +#else + 0, +#endif + /* Version 3.31.0 and later */ + sqlite3_hard_heap_limit64, + sqlite3_uri_key, + sqlite3_filename_database, + sqlite3_filename_journal, + sqlite3_filename_wal, + /* Version 3.32.0 and later */ + sqlite3_create_filename, + sqlite3_free_filename, + sqlite3_database_file_object, + /* Version 3.34.0 and later */ + sqlite3_txn_state, + /* Version 3.36.1 and later */ + sqlite3_changes64, + sqlite3_total_changes64, + /* Version 3.37.0 and later */ + sqlite3_autovacuum_pages, + /* Version 3.38.0 and later */ + sqlite3_error_offset, +#ifndef SQLITE_OMIT_VIRTUALTABLE + sqlite3_vtab_rhs_value, + sqlite3_vtab_distinct, + sqlite3_vtab_in, + sqlite3_vtab_in_first, + sqlite3_vtab_in_next, +#else + 0, + 0, + 0, + 0, + 0, +#endif + /* Version 3.39.0 and later */ +#ifndef SQLITE_OMIT_DESERIALIZE + sqlite3_deserialize, + sqlite3_serialize, +#else + 0, + 0, +#endif + sqlite3_db_name, + /* Version 3.40.0 and later */ + sqlite3_value_encoding, + /* Version 3.41.0 and later */ + sqlite3_is_interrupted, + /* Version 3.43.0 and later */ + sqlite3_stmt_explain }; +/* True if x is the directory separator character +*/ +#if SQLITE_OS_WIN +# define DirSep(X) ((X)=='/'||(X)=='\\') +#else +# define DirSep(X) ((X)=='/') +#endif + /* ** Attempt to load an SQLite extension library contained in the file ** zFile. The entry point is zProc. zProc may be 0 in which case a @@ -116884,7 +135354,7 @@ static const sqlite3_api_routines sqlite3Apis = { ** ** Return SQLITE_OK on success and SQLITE_ERROR if something goes wrong. ** -** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with +** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with ** error message text. The calling function should free this memory ** by calling sqlite3DbFree(db, ). */ @@ -116901,14 +135371,14 @@ static int sqlite3LoadExtension( const char *zEntry; char *zAltEntry = 0; void **aHandle; - u64 nMsg = 300 + sqlite3Strlen30(zFile); + u64 nMsg = strlen(zFile); int ii; int rc; /* Shared library endings to try if zFile cannot be loaded as written */ static const char *azEndings[] = { #if SQLITE_OS_WIN - "dll" + "dll" #elif defined(__APPLE__) "dylib" #else @@ -116935,34 +135405,40 @@ static int sqlite3LoadExtension( zEntry = zProc ? zProc : "sqlite3_extension_init"; + /* tag-20210611-1. Some dlopen() implementations will segfault if given + ** an oversize filename. Most filesystems have a pathname limit of 4K, + ** so limit the extension filename length to about twice that. + ** https://sqlite.org/forum/forumpost/08a0d6d9bf + ** + ** Later (2023-03-25): Save an extra 6 bytes for the filename suffix. + ** See https://sqlite.org/forum/forumpost/24083b579d. + */ + if( nMsg>SQLITE_MAX_PATHLEN ) goto extension_not_found; + + /* Do not allow sqlite3_load_extension() to link to a copy of the + ** running application, by passing in an empty filename. */ + if( nMsg==0 ) goto extension_not_found; + handle = sqlite3OsDlOpen(pVfs, zFile); #if SQLITE_OS_UNIX || SQLITE_OS_WIN for(ii=0; ii sqlite3_example_init @@ -116977,7 +135453,7 @@ static int sqlite3LoadExtension( return SQLITE_NOMEM_BKPT; } memcpy(zAltEntry, "sqlite3_", 8); - for(iFile=ncFile-1; iFile>=0 && zFile[iFile]!='/'; iFile--){} + for(iFile=ncFile-1; iFile>=0 && !DirSep(zFile[iFile]); iFile--){} iFile++; if( sqlite3_strnicmp(zFile+iFile, "lib", 3)==0 ) iFile += 3; for(iEntry=8; (c = zFile[iFile])!=0 && c!='.'; iFile++){ @@ -116991,10 +135467,11 @@ static int sqlite3LoadExtension( } if( xInit==0 ){ if( pzErrMsg ){ - nMsg += sqlite3Strlen30(zEntry); + nMsg += strlen(zEntry) + 300; *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg); if( zErrmsg ){ - sqlite3_snprintf(nMsg, zErrmsg, + assert( nMsg<0x7fffffff ); /* zErrmsg would be NULL if not so */ + sqlite3_snprintf((int)nMsg, zErrmsg, "no entry point [%s] in shared library [%s]", zEntry, zFile); sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); } @@ -117028,6 +135505,19 @@ static int sqlite3LoadExtension( db->aExtension[db->nExtension++] = handle; return SQLITE_OK; + +extension_not_found: + if( pzErrMsg ){ + nMsg += 300; + *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg); + if( zErrmsg ){ + assert( nMsg<0x7fffffff ); /* zErrmsg would be NULL if not so */ + sqlite3_snprintf((int)nMsg, zErrmsg, + "unable to open shared library [%.*s]", SQLITE_MAX_PATHLEN, zFile); + sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); + } + } + return SQLITE_ERROR; } SQLITE_API int sqlite3_load_extension( sqlite3 *db, /* Load the extension into this database connection */ @@ -117065,7 +135555,7 @@ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ if( onoff ){ db->flags |= SQLITE_LoadExtension|SQLITE_LoadExtFunc; }else{ - db->flags &= ~(SQLITE_LoadExtension|SQLITE_LoadExtFunc); + db->flags &= ~(u64)(SQLITE_LoadExtension|SQLITE_LoadExtFunc); } sqlite3_mutex_leave(db->mutex); return SQLITE_OK; @@ -117077,12 +135567,12 @@ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ ** The following object holds the list of automatically loaded ** extensions. ** -** This list is shared across threads. The SQLITE_MUTEX_STATIC_MASTER +** This list is shared across threads. The SQLITE_MUTEX_STATIC_MAIN ** mutex must be held while accessing this list. */ typedef struct sqlite3AutoExtList sqlite3AutoExtList; static SQLITE_WSD struct sqlite3AutoExtList { - u32 nExt; /* Number of entries in aExt[] */ + u32 nExt; /* Number of entries in aExt[] */ void (**aExt)(void); /* Pointers to the extension init functions */ } sqlite3Autoext = { 0, 0 }; @@ -117119,7 +135609,7 @@ SQLITE_API int sqlite3_auto_extension( { u32 i; #if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif wsdAutoextInit; sqlite3_mutex_enter(mutex); @@ -117157,7 +135647,7 @@ SQLITE_API int sqlite3_cancel_auto_extension( void (*xInit)(void) ){ #if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif int i; int n = 0; @@ -117184,7 +135674,7 @@ SQLITE_API void sqlite3_reset_auto_extension(void){ #endif { #if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif wsdAutoextInit; sqlite3_mutex_enter(mutex); @@ -117214,7 +135704,7 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ for(i=0; go; i++){ char *zErrmsg; #if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); #endif #ifdef SQLITE_OMIT_LOAD_EXTENSION const sqlite3_api_routines *pThunk = 0; @@ -117269,7 +135759,7 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ ** that includes the PragType_XXXX macro definitions and the aPragmaName[] ** object. This ensures that the aPragmaName[] table is arranged in ** lexicographical order to facility a binary search of the pragma name. -** Do not edit pragma.h directly. Edit and rerun the script in at +** Do not edit pragma.h directly. Edit and rerun the script in at ** ../tool/mkpragmatab.tcl. */ /************** Include pragma.h in the middle of pragma.c *******************/ /************** Begin file pragma.h ******************************************/ @@ -117280,53 +135770,52 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ */ /* The various pragma types */ -#define PragTyp_HEADER_VALUE 0 -#define PragTyp_AUTO_VACUUM 1 -#define PragTyp_FLAG 2 -#define PragTyp_BUSY_TIMEOUT 3 -#define PragTyp_CACHE_SIZE 4 -#define PragTyp_CACHE_SPILL 5 -#define PragTyp_CASE_SENSITIVE_LIKE 6 -#define PragTyp_COLLATION_LIST 7 -#define PragTyp_COMPILE_OPTIONS 8 -#define PragTyp_DATA_STORE_DIRECTORY 9 -#define PragTyp_DATABASE_LIST 10 -#define PragTyp_DEFAULT_CACHE_SIZE 11 -#define PragTyp_ENCODING 12 -#define PragTyp_FOREIGN_KEY_CHECK 13 -#define PragTyp_FOREIGN_KEY_LIST 14 -#define PragTyp_FUNCTION_LIST 15 -#define PragTyp_INCREMENTAL_VACUUM 16 -#define PragTyp_INDEX_INFO 17 -#define PragTyp_INDEX_LIST 18 -#define PragTyp_INTEGRITY_CHECK 19 -#define PragTyp_JOURNAL_MODE 20 -#define PragTyp_JOURNAL_SIZE_LIMIT 21 -#define PragTyp_LOCK_PROXY_FILE 22 -#define PragTyp_LOCKING_MODE 23 -#define PragTyp_PAGE_COUNT 24 -#define PragTyp_MMAP_SIZE 25 -#define PragTyp_MODULE_LIST 26 -#define PragTyp_OPTIMIZE 27 -#define PragTyp_PAGE_SIZE 28 -#define PragTyp_PRAGMA_LIST 29 -#define PragTyp_SECURE_DELETE 30 -#define PragTyp_SHRINK_MEMORY 31 -#define PragTyp_SOFT_HEAP_LIMIT 32 -#define PragTyp_SYNCHRONOUS 33 -#define PragTyp_TABLE_INFO 34 -#define PragTyp_TEMP_STORE 35 -#define PragTyp_TEMP_STORE_DIRECTORY 36 -#define PragTyp_THREADS 37 -#define PragTyp_WAL_AUTOCHECKPOINT 38 -#define PragTyp_WAL_CHECKPOINT 39 -#define PragTyp_ACTIVATE_EXTENSIONS 40 -#define PragTyp_HEXKEY 41 -#define PragTyp_KEY 42 -#define PragTyp_REKEY 43 +#define PragTyp_ACTIVATE_EXTENSIONS 0 +#define PragTyp_ANALYSIS_LIMIT 1 +#define PragTyp_HEADER_VALUE 2 +#define PragTyp_AUTO_VACUUM 3 +#define PragTyp_FLAG 4 +#define PragTyp_BUSY_TIMEOUT 5 +#define PragTyp_CACHE_SIZE 6 +#define PragTyp_CACHE_SPILL 7 +#define PragTyp_CASE_SENSITIVE_LIKE 8 +#define PragTyp_COLLATION_LIST 9 +#define PragTyp_COMPILE_OPTIONS 10 +#define PragTyp_DATA_STORE_DIRECTORY 11 +#define PragTyp_DATABASE_LIST 12 +#define PragTyp_DEFAULT_CACHE_SIZE 13 +#define PragTyp_ENCODING 14 +#define PragTyp_FOREIGN_KEY_CHECK 15 +#define PragTyp_FOREIGN_KEY_LIST 16 +#define PragTyp_FUNCTION_LIST 17 +#define PragTyp_HARD_HEAP_LIMIT 18 +#define PragTyp_INCREMENTAL_VACUUM 19 +#define PragTyp_INDEX_INFO 20 +#define PragTyp_INDEX_LIST 21 +#define PragTyp_INTEGRITY_CHECK 22 +#define PragTyp_JOURNAL_MODE 23 +#define PragTyp_JOURNAL_SIZE_LIMIT 24 +#define PragTyp_LOCK_PROXY_FILE 25 +#define PragTyp_LOCKING_MODE 26 +#define PragTyp_PAGE_COUNT 27 +#define PragTyp_MMAP_SIZE 28 +#define PragTyp_MODULE_LIST 29 +#define PragTyp_OPTIMIZE 30 +#define PragTyp_PAGE_SIZE 31 +#define PragTyp_PRAGMA_LIST 32 +#define PragTyp_SECURE_DELETE 33 +#define PragTyp_SHRINK_MEMORY 34 +#define PragTyp_SOFT_HEAP_LIMIT 35 +#define PragTyp_SYNCHRONOUS 36 +#define PragTyp_TABLE_INFO 37 +#define PragTyp_TABLE_LIST 38 +#define PragTyp_TEMP_STORE 39 +#define PragTyp_TEMP_STORE_DIRECTORY 40 +#define PragTyp_THREADS 41 +#define PragTyp_WAL_AUTOCHECKPOINT 42 +#define PragTyp_WAL_CHECKPOINT 43 #define PragTyp_LOCK_STATUS 44 -#define PragTyp_PARSER_TRACE 45 -#define PragTyp_STATS 46 +#define PragTyp_STATS 45 /* Property flags associated with various pragma. */ #define PragFlg_NeedSchema 0x01 /* Force schema load before running */ @@ -117343,58 +135832,67 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ ** result column is different from the name of the pragma */ static const char *const pragCName[] = { - /* 0 */ "cache_size", /* Used by: default_cache_size */ - /* 1 */ "cid", /* Used by: table_info */ - /* 2 */ "name", - /* 3 */ "type", - /* 4 */ "notnull", - /* 5 */ "dflt_value", - /* 6 */ "pk", - /* 7 */ "tbl", /* Used by: stats */ - /* 8 */ "idx", - /* 9 */ "wdth", - /* 10 */ "hght", - /* 11 */ "flgs", - /* 12 */ "seqno", /* Used by: index_info */ - /* 13 */ "cid", - /* 14 */ "name", - /* 15 */ "seqno", /* Used by: index_xinfo */ - /* 16 */ "cid", - /* 17 */ "name", - /* 18 */ "desc", - /* 19 */ "coll", - /* 20 */ "key", - /* 21 */ "seq", /* Used by: index_list */ - /* 22 */ "name", - /* 23 */ "unique", - /* 24 */ "origin", - /* 25 */ "partial", - /* 26 */ "seq", /* Used by: database_list */ - /* 27 */ "name", - /* 28 */ "file", - /* 29 */ "name", /* Used by: function_list */ - /* 30 */ "builtin", - /* 31 */ "name", /* Used by: module_list pragma_list */ - /* 32 */ "seq", /* Used by: collation_list */ - /* 33 */ "name", - /* 34 */ "id", /* Used by: foreign_key_list */ - /* 35 */ "seq", - /* 36 */ "table", - /* 37 */ "from", - /* 38 */ "to", - /* 39 */ "on_update", - /* 40 */ "on_delete", - /* 41 */ "match", - /* 42 */ "table", /* Used by: foreign_key_check */ - /* 43 */ "rowid", - /* 44 */ "parent", - /* 45 */ "fkid", - /* 46 */ "busy", /* Used by: wal_checkpoint */ - /* 47 */ "log", - /* 48 */ "checkpointed", - /* 49 */ "timeout", /* Used by: busy_timeout */ - /* 50 */ "database", /* Used by: lock_status */ - /* 51 */ "status", + /* 0 */ "id", /* Used by: foreign_key_list */ + /* 1 */ "seq", + /* 2 */ "table", + /* 3 */ "from", + /* 4 */ "to", + /* 5 */ "on_update", + /* 6 */ "on_delete", + /* 7 */ "match", + /* 8 */ "cid", /* Used by: table_xinfo */ + /* 9 */ "name", + /* 10 */ "type", + /* 11 */ "notnull", + /* 12 */ "dflt_value", + /* 13 */ "pk", + /* 14 */ "hidden", + /* table_info reuses 8 */ + /* 15 */ "schema", /* Used by: table_list */ + /* 16 */ "name", + /* 17 */ "type", + /* 18 */ "ncol", + /* 19 */ "wr", + /* 20 */ "strict", + /* 21 */ "seqno", /* Used by: index_xinfo */ + /* 22 */ "cid", + /* 23 */ "name", + /* 24 */ "desc", + /* 25 */ "coll", + /* 26 */ "key", + /* 27 */ "name", /* Used by: function_list */ + /* 28 */ "builtin", + /* 29 */ "type", + /* 30 */ "enc", + /* 31 */ "narg", + /* 32 */ "flags", + /* 33 */ "tbl", /* Used by: stats */ + /* 34 */ "idx", + /* 35 */ "wdth", + /* 36 */ "hght", + /* 37 */ "flgs", + /* 38 */ "seq", /* Used by: index_list */ + /* 39 */ "name", + /* 40 */ "unique", + /* 41 */ "origin", + /* 42 */ "partial", + /* 43 */ "table", /* Used by: foreign_key_check */ + /* 44 */ "rowid", + /* 45 */ "parent", + /* 46 */ "fkid", + /* index_info reuses 21 */ + /* 47 */ "seq", /* Used by: database_list */ + /* 48 */ "name", + /* 49 */ "file", + /* 50 */ "busy", /* Used by: wal_checkpoint */ + /* 51 */ "log", + /* 52 */ "checkpointed", + /* collation_list reuses 38 */ + /* 53 */ "database", /* Used by: lock_status */ + /* 54 */ "status", + /* 55 */ "cache_size", /* Used by: default_cache_size */ + /* module_list pragma_list reuses 9 */ + /* 56 */ "timeout", /* Used by: busy_timeout */ }; /* Definitions of all built-in pragmas */ @@ -117404,16 +135902,21 @@ typedef struct PragmaName { u8 mPragFlg; /* Zero or more PragFlg_XXX values */ u8 iPragCName; /* Start of column names in pragCName[] */ u8 nPragCName; /* Num of col names. 0 means use pragma name */ - u32 iArg; /* Extra argument */ + u64 iArg; /* Extra argument */ } PragmaName; static const PragmaName aPragmaName[] = { -#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD) +#if defined(SQLITE_ENABLE_CEROD) {/* zName: */ "activate_extensions", /* ePragTyp: */ PragTyp_ACTIVATE_EXTENSIONS, /* ePragFlg: */ 0, /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif + {/* zName: */ "analysis_limit", + /* ePragTyp: */ PragTyp_ANALYSIS_LIMIT, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) {/* zName: */ "application_id", /* ePragTyp: */ PragTyp_HEADER_VALUE, @@ -117440,7 +135943,7 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "busy_timeout", /* ePragTyp: */ PragTyp_BUSY_TIMEOUT, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 49, 1, + /* ColNames: */ 56, 1, /* iArg: */ 0 }, #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) {/* zName: */ "cache_size", @@ -117456,11 +135959,13 @@ static const PragmaName aPragmaName[] = { /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif +#if !defined(SQLITE_OMIT_CASE_SENSITIVE_LIKE_PRAGMA) {/* zName: */ "case_sensitive_like", /* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE, /* ePragFlg: */ PragFlg_NoColumns, /* ColNames: */ 0, 0, /* iArg: */ 0 }, +#endif {/* zName: */ "cell_size_check", /* ePragTyp: */ PragTyp_FLAG, /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, @@ -117477,7 +135982,7 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "collation_list", /* ePragTyp: */ PragTyp_COLLATION_LIST, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 32, 2, + /* ColNames: */ 38, 2, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_COMPILEOPTION_DIAGS) @@ -117511,15 +136016,15 @@ static const PragmaName aPragmaName[] = { #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) {/* zName: */ "database_list", /* ePragTyp: */ PragTyp_DATABASE_LIST, - /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0, - /* ColNames: */ 26, 3, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 47, 3, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED) {/* zName: */ "default_cache_size", /* ePragTyp: */ PragTyp_DEFAULT_CACHE_SIZE, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, - /* ColNames: */ 0, 1, + /* ColNames: */ 55, 1, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) @@ -117548,15 +136053,15 @@ static const PragmaName aPragmaName[] = { #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) {/* zName: */ "foreign_key_check", /* ePragTyp: */ PragTyp_FOREIGN_KEY_CHECK, - /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0, - /* ColNames: */ 42, 4, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 43, 4, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FOREIGN_KEY) {/* zName: */ "foreign_key_list", /* ePragTyp: */ PragTyp_FOREIGN_KEY_LIST, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, - /* ColNames: */ 34, 8, + /* ColNames: */ 0, 8, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) @@ -117588,26 +136093,19 @@ static const PragmaName aPragmaName[] = { /* iArg: */ SQLITE_FullFSync }, #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) -#if defined(SQLITE_INTROSPECTION_PRAGMAS) +#if !defined(SQLITE_OMIT_INTROSPECTION_PRAGMAS) {/* zName: */ "function_list", /* ePragTyp: */ PragTyp_FUNCTION_LIST, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 29, 2, + /* ColNames: */ 27, 6, /* iArg: */ 0 }, #endif #endif -#if defined(SQLITE_HAS_CODEC) - {/* zName: */ "hexkey", - /* ePragTyp: */ PragTyp_HEXKEY, - /* ePragFlg: */ 0, + {/* zName: */ "hard_heap_limit", + /* ePragTyp: */ PragTyp_HARD_HEAP_LIMIT, + /* ePragFlg: */ PragFlg_Result0, /* ColNames: */ 0, 0, /* iArg: */ 0 }, - {/* zName: */ "hexrekey", - /* ePragTyp: */ PragTyp_HEXKEY, - /* ePragFlg: */ 0, - /* ColNames: */ 0, 0, - /* iArg: */ 0 }, -#endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if !defined(SQLITE_OMIT_CHECK) {/* zName: */ "ignore_check_constraints", @@ -117628,23 +136126,23 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "index_info", /* ePragTyp: */ PragTyp_INDEX_INFO, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, - /* ColNames: */ 12, 3, + /* ColNames: */ 21, 3, /* iArg: */ 0 }, {/* zName: */ "index_list", /* ePragTyp: */ PragTyp_INDEX_LIST, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, - /* ColNames: */ 21, 5, + /* ColNames: */ 38, 5, /* iArg: */ 0 }, {/* zName: */ "index_xinfo", /* ePragTyp: */ PragTyp_INDEX_INFO, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, - /* ColNames: */ 15, 6, + /* ColNames: */ 21, 6, /* iArg: */ 1 }, #endif #if !defined(SQLITE_OMIT_INTEGRITY_CHECK) {/* zName: */ "integrity_check", /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, - /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt, /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif @@ -117660,19 +136158,12 @@ static const PragmaName aPragmaName[] = { /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif -#if defined(SQLITE_HAS_CODEC) - {/* zName: */ "key", - /* ePragTyp: */ PragTyp_KEY, - /* ePragFlg: */ 0, - /* ColNames: */ 0, 0, - /* iArg: */ 0 }, -#endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - {/* zName: */ "legacy_file_format", + {/* zName: */ "legacy_alter_table", /* ePragTyp: */ PragTyp_FLAG, /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, /* ColNames: */ 0, 0, - /* iArg: */ SQLITE_LegacyFileFmt }, + /* iArg: */ SQLITE_LegacyAlter }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_ENABLE_LOCKING_STYLE {/* zName: */ "lock_proxy_file", @@ -117685,7 +136176,7 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "lock_status", /* ePragTyp: */ PragTyp_LOCK_STATUS, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 50, 2, + /* ColNames: */ 53, 2, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) @@ -117707,11 +136198,11 @@ static const PragmaName aPragmaName[] = { #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) #if !defined(SQLITE_OMIT_VIRTUALTABLE) -#if defined(SQLITE_INTROSPECTION_PRAGMAS) +#if !defined(SQLITE_OMIT_INTROSPECTION_PRAGMAS) {/* zName: */ "module_list", /* ePragTyp: */ PragTyp_MODULE_LIST, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 31, 1, + /* ColNames: */ 9, 1, /* iArg: */ 0 }, #endif #endif @@ -117733,18 +136224,20 @@ static const PragmaName aPragmaName[] = { /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif -#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_PARSER_TRACE) +#if !defined(SQLITE_OMIT_FLAG_PRAGMAS) +#if defined(SQLITE_DEBUG) {/* zName: */ "parser_trace", - /* ePragTyp: */ PragTyp_PARSER_TRACE, - /* ePragFlg: */ 0, + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, /* ColNames: */ 0, 0, - /* iArg: */ 0 }, + /* iArg: */ SQLITE_ParserTrace }, #endif -#if defined(SQLITE_INTROSPECTION_PRAGMAS) +#endif +#if !defined(SQLITE_OMIT_INTROSPECTION_PRAGMAS) {/* zName: */ "pragma_list", /* ePragTyp: */ PragTyp_PRAGMA_LIST, /* ePragFlg: */ PragFlg_Result0, - /* ColNames: */ 31, 1, + /* ColNames: */ 9, 1, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) @@ -117757,7 +136250,7 @@ static const PragmaName aPragmaName[] = { #if !defined(SQLITE_OMIT_INTEGRITY_CHECK) {/* zName: */ "quick_check", /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, - /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt, /* ColNames: */ 0, 0, /* iArg: */ 0 }, #endif @@ -117772,15 +136265,6 @@ static const PragmaName aPragmaName[] = { /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, /* ColNames: */ 0, 0, /* iArg: */ SQLITE_RecTriggers }, -#endif -#if defined(SQLITE_HAS_CODEC) - {/* zName: */ "rekey", - /* ePragTyp: */ PragTyp_REKEY, - /* ePragFlg: */ 0, - /* ColNames: */ 0, 0, - /* iArg: */ 0 }, -#endif -#if !defined(SQLITE_OMIT_FLAG_PRAGMAS) {/* zName: */ "reverse_unordered_selects", /* ePragTyp: */ PragTyp_FLAG, /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, @@ -117831,7 +136315,7 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "stats", /* ePragTyp: */ PragTyp_STATS, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq, - /* ColNames: */ 7, 5, + /* ColNames: */ 33, 5, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) @@ -117845,8 +136329,18 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "table_info", /* ePragTyp: */ PragTyp_TABLE_INFO, /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, - /* ColNames: */ 1, 6, + /* ColNames: */ 8, 6, /* iArg: */ 0 }, + {/* zName: */ "table_list", + /* ePragTyp: */ PragTyp_TABLE_LIST, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1, + /* ColNames: */ 15, 6, + /* iArg: */ 0 }, + {/* zName: */ "table_xinfo", + /* ePragTyp: */ PragTyp_TABLE_INFO, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 8, 7, + /* iArg: */ 1 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) {/* zName: */ "temp_store", @@ -117865,6 +136359,13 @@ static const PragmaName aPragmaName[] = { /* ePragFlg: */ PragFlg_Result0, /* ColNames: */ 0, 0, /* iArg: */ 0 }, +#if !defined(SQLITE_OMIT_FLAG_PRAGMAS) + {/* zName: */ "trusted_schema", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_TrustedSchema }, +#endif #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) {/* zName: */ "user_version", /* ePragTyp: */ PragTyp_HEADER_VALUE, @@ -117910,7 +136411,7 @@ static const PragmaName aPragmaName[] = { {/* zName: */ "wal_checkpoint", /* ePragTyp: */ PragTyp_WAL_CHECKPOINT, /* ePragFlg: */ PragFlg_NeedSchema, - /* ColNames: */ 46, 3, + /* ColNames: */ 50, 3, /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) @@ -117918,17 +136419,17 @@ static const PragmaName aPragmaName[] = { /* ePragTyp: */ PragTyp_FLAG, /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, /* ColNames: */ 0, 0, - /* iArg: */ SQLITE_WriteSchema }, + /* iArg: */ SQLITE_WriteSchema|SQLITE_NoSchemaError }, #endif }; -/* Number of pragmas: 60 on by default, 77 total. */ +/* Number of pragmas: 68 on by default, 78 total. */ /************** End of pragma.h **********************************************/ /************** Continuing where we left off in pragma.c *********************/ /* ** Interpret the given string as a safety level. Return 0 for OFF, -** 1 for ON or NORMAL, 2 for FULL, and 3 for EXTRA. Return 1 for an empty or +** 1 for ON or NORMAL, 2 for FULL, and 3 for EXTRA. Return 1 for an empty or ** unrecognized string argument. The FULL and EXTRA option is disallowed ** if the omitFull parameter it 1. ** @@ -117987,7 +136488,7 @@ static int getLockingMode(const char *z){ /* ** Interpret the given string as an auto-vacuum mode value. ** -** The following strings, "none", "full" and "incremental" are +** The following strings, "none", "full" and "incremental" are ** acceptable, as are their numeric equivalents: 0, 1 and 2 respectively. */ static int getAutoVacuum(const char *z){ @@ -118027,7 +136528,9 @@ static int getTempStore(const char *z){ static int invalidateTempStorage(Parse *pParse){ sqlite3 *db = pParse->db; if( db->aDb[1].pBt!=0 ){ - if( !db->autoCommit || sqlite3BtreeIsInReadTrans(db->aDb[1].pBt) ){ + if( !db->autoCommit + || sqlite3BtreeTxnState(db->aDb[1].pBt)!=SQLITE_TXN_NONE + ){ sqlite3ErrorMsg(pParse, "temporary storage cannot be changed " "from within a transaction"); return SQLITE_ERROR; @@ -118139,7 +136642,7 @@ static const char *actionName(u8 action){ case OE_SetDflt: zName = "SET DEFAULT"; break; case OE_Cascade: zName = "CASCADE"; break; case OE_Restrict: zName = "RESTRICT"; break; - default: zName = "NO ACTION"; + default: zName = "NO ACTION"; assert( action==OE_None ); break; } return zName; @@ -118191,6 +136694,56 @@ static const PragmaName *pragmaLocate(const char *zName){ return lwr>upr ? 0 : &aPragmaName[mid]; } +/* +** Create zero or more entries in the output for the SQL functions +** defined by FuncDef p. +*/ +static void pragmaFunclistLine( + Vdbe *v, /* The prepared statement being created */ + FuncDef *p, /* A particular function definition */ + int isBuiltin, /* True if this is a built-in function */ + int showInternFuncs /* True if showing internal functions */ +){ + u32 mask = + SQLITE_DETERMINISTIC | + SQLITE_DIRECTONLY | + SQLITE_SUBTYPE | + SQLITE_INNOCUOUS | + SQLITE_FUNC_INTERNAL + ; + if( showInternFuncs ) mask = 0xffffffff; + for(; p; p=p->pNext){ + const char *zType; + static const char *azEnc[] = { 0, "utf8", "utf16le", "utf16be" }; + + assert( SQLITE_FUNC_ENCMASK==0x3 ); + assert( strcmp(azEnc[SQLITE_UTF8],"utf8")==0 ); + assert( strcmp(azEnc[SQLITE_UTF16LE],"utf16le")==0 ); + assert( strcmp(azEnc[SQLITE_UTF16BE],"utf16be")==0 ); + + if( p->xSFunc==0 ) continue; + if( (p->funcFlags & SQLITE_FUNC_INTERNAL)!=0 + && showInternFuncs==0 + ){ + continue; + } + if( p->xValue!=0 ){ + zType = "w"; + }else if( p->xFinalize!=0 ){ + zType = "a"; + }else{ + zType = "s"; + } + sqlite3VdbeMultiLoad(v, 1, "sissii", + p->zName, isBuiltin, + zType, azEnc[p->funcFlags&SQLITE_FUNC_ENCMASK], + p->nArg, + (p->funcFlags & mask) ^ SQLITE_INNOCUOUS + ); + } +} + + /* ** Helper subroutine for PRAGMA integrity_check: ** @@ -118208,7 +136761,7 @@ static int integrityCheckResultRow(Vdbe *v){ } /* -** Process a pragma statement. +** Process a pragma statement. ** ** Pragmas are of this form: ** @@ -118223,7 +136776,7 @@ static int integrityCheckResultRow(Vdbe *v){ ** id and pId2 is any empty string. */ SQLITE_PRIVATE void sqlite3Pragma( - Parse *pParse, + Parse *pParse, Token *pId1, /* First part of [schema.]id field */ Token *pId2, /* Second part of [schema.]id field, or NULL */ Token *pValue, /* Token for , or NULL */ @@ -118251,8 +136804,8 @@ SQLITE_PRIVATE void sqlite3Pragma( if( iDb<0 ) return; pDb = &db->aDb[iDb]; - /* If the temp database has been explicitly named as part of the - ** pragma, make sure it is open. + /* If the temp database has been explicitly named as part of the + ** pragma, make sure it is open. */ if( iDb==1 && sqlite3OpenTempDatabase(pParse) ){ return; @@ -118312,7 +136865,11 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Locate the pragma in the lookup table */ pPragma = pragmaLocate(zLeft); - if( pPragma==0 ) goto pragma_out; + if( pPragma==0 ){ + /* IMP: R-43042-22504 No error messages are generated if an + ** unknown pragma is issued. */ + goto pragma_out; + } /* Make sure the database schema is loaded if the pragma requires that */ if( (pPragma->mPragFlg & PragFlg_NeedSchema)!=0 ){ @@ -118320,7 +136877,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } /* Register the result column names for pragmas that return results */ - if( (pPragma->mPragFlg & PragFlg_NoColumns)==0 + if( (pPragma->mPragFlg & PragFlg_NoColumns)==0 && ((pPragma->mPragFlg & PragFlg_NoColumns1)==0 || zRight==0) ){ setPragmaResultColumnNames(v, pPragma); @@ -118328,7 +136885,7 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Jump to the appropriate pragma handler */ switch( pPragma->ePragTyp ){ - + #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED) /* ** PRAGMA [schema.]default_cache_size @@ -118402,7 +136959,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** buffer that the pager module resizes using sqlite3_realloc(). */ db->nextPagesize = sqlite3Atoi(zRight); - if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){ + if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,0,0) ){ sqlite3OomFault(db); } } @@ -118444,7 +137001,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** PRAGMA [schema.]max_page_count=N ** ** The first form reports the current setting for the - ** maximum number of pages in the database file. The + ** maximum number of pages in the database file. The ** second form attempts to change this setting. Both ** forms return the current setting. ** @@ -118458,13 +137015,19 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_PAGE_COUNT: { int iReg; + i64 x = 0; sqlite3CodeVerifySchema(pParse, iDb); iReg = ++pParse->nMem; if( sqlite3Tolower(zLeft[0])=='p' ){ sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg); }else{ - sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, - sqlite3AbsInt32(sqlite3Atoi(zRight))); + if( zRight && sqlite3DecOrHexToI64(zRight,&x)==0 ){ + if( x<0 ) x = 0; + else if( x>0xfffffffe ) x = 0xfffffffe; + }else{ + x = 0; + } + sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, (int)x); } sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1); break; @@ -118540,6 +137103,11 @@ SQLITE_PRIVATE void sqlite3Pragma( ** then do a query */ eMode = PAGER_JOURNALMODE_QUERY; } + if( eMode==PAGER_JOURNALMODE_OFF && (db->flags & SQLITE_Defensive)!=0 ){ + /* Do not allow journal-mode "OFF" in defensive since the database + ** can become corrupted using ordinary SQL when the journal is off */ + eMode = PAGER_JOURNALMODE_QUERY; + } } if( eMode==PAGER_JOURNALMODE_QUERY && pId2->n==0 ){ /* Convert "PRAGMA journal_mode" into "PRAGMA main.journal_mode" */ @@ -118600,7 +137168,7 @@ SQLITE_PRIVATE void sqlite3Pragma( */ rc = sqlite3BtreeSetAutoVacuum(pBt, eAuto); if( rc==SQLITE_OK && (eAuto==1 || eAuto==2) ){ - /* When setting the auto_vacuum mode to either "full" or + /* When setting the auto_vacuum mode to either "full" or ** "incremental", write the value of meta[6] in the database ** file. Before writing to meta[6], check that meta[3] indicates ** that this really is an auto-vacuum capable database. @@ -118637,7 +137205,7 @@ SQLITE_PRIVATE void sqlite3Pragma( */ #ifndef SQLITE_OMIT_AUTOVACUUM case PragTyp_INCREMENTAL_VACUUM: { - int iLimit, addr; + int iLimit = 0, addr; if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){ iLimit = 0x7fffffff; } @@ -118683,7 +137251,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** ** The first form reports the current local setting for the ** page cache spill size. The second form turns cache spill on - ** or off. When turnning cache spill on, the size is set to the + ** or off. When turning cache spill on, the size is set to the ** current cache_size. The third form sets a spill size that ** may be different form the cache size. ** If N is positive then that is the @@ -118702,7 +137270,7 @@ SQLITE_PRIVATE void sqlite3Pragma( assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( !zRight ){ returnSingleInt(v, - (db->flags & SQLITE_CacheSpill)==0 ? 0 : + (db->flags & SQLITE_CacheSpill)==0 ? 0 : sqlite3BtreeSetSpillSize(pDb->pBt,0)); }else{ int size = 1; @@ -118712,7 +137280,7 @@ SQLITE_PRIVATE void sqlite3Pragma( if( sqlite3GetBoolean(zRight, size!=0) ){ db->flags |= SQLITE_CacheSpill; }else{ - db->flags &= ~SQLITE_CacheSpill; + db->flags &= ~(u64)SQLITE_CacheSpill; } setAllPagerFlags(db); } @@ -118794,6 +137362,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** */ case PragTyp_TEMP_STORE_DIRECTORY: { + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); if( !zRight ){ returnSingleText(v, sqlite3_temp_directory); }else{ @@ -118803,6 +137372,7 @@ SQLITE_PRIVATE void sqlite3Pragma( rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res); if( rc!=SQLITE_OK || res==0 ){ sqlite3ErrorMsg(pParse, "not a writable directory"); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); goto pragma_out; } } @@ -118820,6 +137390,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } #endif /* SQLITE_OMIT_WSD */ } + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); break; } @@ -118838,6 +137409,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** */ case PragTyp_DATA_STORE_DIRECTORY: { + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); if( !zRight ){ returnSingleText(v, sqlite3_data_directory); }else{ @@ -118847,6 +137419,7 @@ SQLITE_PRIVATE void sqlite3Pragma( rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res); if( rc!=SQLITE_OK || res==0 ){ sqlite3ErrorMsg(pParse, "not a writable directory"); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); goto pragma_out; } } @@ -118858,6 +137431,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } #endif /* SQLITE_OMIT_WSD */ } + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_TEMPDIR)); break; } #endif @@ -118876,7 +137450,7 @@ SQLITE_PRIVATE void sqlite3Pragma( Pager *pPager = sqlite3BtreePager(pDb->pBt); char *proxy_file_path = NULL; sqlite3_file *pFile = sqlite3PagerFile(pPager); - sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE, + sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE, &proxy_file_path); returnSingleText(v, proxy_file_path); }else{ @@ -118884,10 +137458,10 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3_file *pFile = sqlite3PagerFile(pPager); int res; if( zRight[0] ){ - res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, + res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, zRight); } else { - res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, + res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, NULL); } if( res!=SQLITE_OK ){ @@ -118897,8 +137471,8 @@ SQLITE_PRIVATE void sqlite3Pragma( } break; } -#endif /* SQLITE_ENABLE_LOCKING_STYLE */ - +#endif /* SQLITE_ENABLE_LOCKING_STYLE */ + /* ** PRAGMA [schema.]synchronous ** PRAGMA [schema.]synchronous=OFF|ON|NORMAL|FULL|EXTRA @@ -118913,7 +137487,7 @@ SQLITE_PRIVATE void sqlite3Pragma( returnSingleInt(v, pDb->safety_level-1); }else{ if( !db->autoCommit ){ - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "Safety level may not be changed inside a transaction"); }else if( iDb!=1 ){ int iLevel = (getSafetyLevel(zRight,0,1)+1) & PAGER_SYNCHRONOUS_MASK; @@ -118933,7 +137507,7 @@ SQLITE_PRIVATE void sqlite3Pragma( setPragmaResultColumnNames(v, pPragma); returnSingleInt(v, (db->flags & pPragma->iArg)!=0 ); }else{ - int mask = pPragma->iArg; /* Mask of bits to set or clear. */ + u64 mask = pPragma->iArg; /* Mask of bits to set or clear. */ if( db->autoCommit==0 ){ /* Foreign key support may not be enabled or disabled while not ** in auto-commit mode. */ @@ -118951,9 +137525,17 @@ SQLITE_PRIVATE void sqlite3Pragma( }else{ db->flags &= ~mask; if( mask==SQLITE_DeferFKs ) db->nDeferredImmCons = 0; + if( (mask & SQLITE_WriteSchema)!=0 + && sqlite3_stricmp(zRight, "reset")==0 + ){ + /* IMP: R-60817-01178 If the argument is "RESET" then schema + ** writing is disabled (as with "PRAGMA writable_schema=OFF") and, + ** in addition, the schema is reloaded. */ + sqlite3ResetAllSchemasOfConnection(db); + } } - /* Many of the flag-pragmas modify the code generated by the SQL + /* Many of the flag-pragmas modify the code generated by the SQL ** compiler (eg. count_changes). So add an opcode to expire all ** compiled SQL statements after modifying a pragma value. */ @@ -118980,19 +137562,30 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_TABLE_INFO: if( zRight ){ Table *pTab; + sqlite3CodeVerifyNamedSchema(pParse, zDb); pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb); if( pTab ){ int i, k; int nHidden = 0; Column *pCol; Index *pPk = sqlite3PrimaryKeyIndex(pTab); - pParse->nMem = 6; - sqlite3CodeVerifySchema(pParse, iDb); + pParse->nMem = 7; sqlite3ViewGetColumnNames(pParse, pTab); for(i=0, pCol=pTab->aCol; inCol; i++, pCol++){ - if( IsHiddenColumn(pCol) ){ - nHidden++; - continue; + int isHidden = 0; + const Expr *pColExpr; + if( pCol->colFlags & COLFLAG_NOINSERT ){ + if( pPragma->iArg==0 ){ + nHidden++; + continue; + } + if( pCol->colFlags & COLFLAG_VIRTUAL ){ + isHidden = 2; /* GENERATED ALWAYS AS ... VIRTUAL */ + }else if( pCol->colFlags & COLFLAG_STORED ){ + isHidden = 3; /* GENERATED ALWAYS AS ... STORED */ + }else{ assert( pCol->colFlags & COLFLAG_HIDDEN ); + isHidden = 1; /* HIDDEN */ + } } if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){ k = 0; @@ -119001,14 +137594,97 @@ SQLITE_PRIVATE void sqlite3Pragma( }else{ for(k=1; k<=pTab->nCol && pPk->aiColumn[k-1]!=i; k++){} } - assert( pCol->pDflt==0 || pCol->pDflt->op==TK_SPAN ); - sqlite3VdbeMultiLoad(v, 1, "issisi", + pColExpr = sqlite3ColumnExpr(pTab,pCol); + assert( pColExpr==0 || pColExpr->op==TK_SPAN || isHidden>=2 ); + assert( pColExpr==0 || !ExprHasProperty(pColExpr, EP_IntValue) + || isHidden>=2 ); + sqlite3VdbeMultiLoad(v, 1, pPragma->iArg ? "issisii" : "issisi", i-nHidden, - pCol->zName, + pCol->zCnName, sqlite3ColumnType(pCol,""), pCol->notNull ? 1 : 0, - pCol->pDflt ? pCol->pDflt->u.zToken : 0, - k); + (isHidden>=2 || pColExpr==0) ? 0 : pColExpr->u.zToken, + k, + isHidden); + } + } + } + break; + + /* + ** PRAGMA table_list + ** + ** Return a single row for each table, virtual table, or view in the + ** entire schema. + ** + ** schema: Name of attached database hold this table + ** name: Name of the table itself + ** type: "table", "view", "virtual", "shadow" + ** ncol: Number of columns + ** wr: True for a WITHOUT ROWID table + ** strict: True for a STRICT table + */ + case PragTyp_TABLE_LIST: { + int ii; + pParse->nMem = 6; + sqlite3CodeVerifyNamedSchema(pParse, zDb); + for(ii=0; iinDb; ii++){ + HashElem *k; + Hash *pHash; + int initNCol; + if( zDb && sqlite3_stricmp(zDb, db->aDb[ii].zDbSName)!=0 ) continue; + + /* Ensure that the Table.nCol field is initialized for all views + ** and virtual tables. Each time we initialize a Table.nCol value + ** for a table, that can potentially disrupt the hash table, so restart + ** the initialization scan. + */ + pHash = &db->aDb[ii].pSchema->tblHash; + initNCol = sqliteHashCount(pHash); + while( initNCol-- ){ + for(k=sqliteHashFirst(pHash); 1; k=sqliteHashNext(k) ){ + Table *pTab; + if( k==0 ){ initNCol = 0; break; } + pTab = sqliteHashData(k); + if( pTab->nCol==0 ){ + char *zSql = sqlite3MPrintf(db, "SELECT*FROM\"%w\"", pTab->zName); + if( zSql ){ + sqlite3_stmt *pDummy = 0; + (void)sqlite3_prepare(db, zSql, -1, &pDummy, 0); + (void)sqlite3_finalize(pDummy); + sqlite3DbFree(db, zSql); + } + if( db->mallocFailed ){ + sqlite3ErrorMsg(db->pParse, "out of memory"); + db->pParse->rc = SQLITE_NOMEM_BKPT; + } + pHash = &db->aDb[ii].pSchema->tblHash; + break; + } + } + } + + for(k=sqliteHashFirst(pHash); k; k=sqliteHashNext(k) ){ + Table *pTab = sqliteHashData(k); + const char *zType; + if( zRight && sqlite3_stricmp(zRight, pTab->zName)!=0 ) continue; + if( IsView(pTab) ){ + zType = "view"; + }else if( IsVirtual(pTab) ){ + zType = "virtual"; + }else if( pTab->tabFlags & TF_Shadow ){ + zType = "shadow"; + }else{ + zType = "table"; + } + sqlite3VdbeMultiLoad(v, 1, "sssiii", + db->aDb[ii].zDbSName, + sqlite3PreferredTableName(pTab->zName), + zType, + pTab->nCol, + (pTab->tabFlags & TF_WithoutRowid)!=0, + (pTab->tabFlags & TF_Strict)!=0 + ); } } } @@ -119023,7 +137699,7 @@ SQLITE_PRIVATE void sqlite3Pragma( for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); sqlite3VdbeMultiLoad(v, 1, "ssiii", - pTab->zName, + sqlite3PreferredTableName(pTab->zName), 0, pTab->szTabRow, pTab->nRowLogEst, @@ -119045,7 +137721,17 @@ SQLITE_PRIVATE void sqlite3Pragma( Index *pIdx; Table *pTab; pIdx = sqlite3FindIndex(db, zRight, zDb); + if( pIdx==0 ){ + /* If there is no index named zRight, check to see if there is a + ** WITHOUT ROWID table named zRight, and if there is, show the + ** structure of the PRIMARY KEY index for that table. */ + pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb); + if( pTab && !HasRowid(pTab) ){ + pIdx = sqlite3PrimaryKeyIndex(pTab); + } + } if( pIdx ){ + int iIdxDb = sqlite3SchemaToIndex(db, pIdx->pSchema); int i; int mx; if( pPragma->iArg ){ @@ -119058,12 +137744,12 @@ SQLITE_PRIVATE void sqlite3Pragma( pParse->nMem = 3; } pTab = pIdx->pTable; - sqlite3CodeVerifySchema(pParse, iDb); + sqlite3CodeVerifySchema(pParse, iIdxDb); assert( pParse->nMem<=pPragma->nPragCName ); for(i=0; iaiColumn[i]; sqlite3VdbeMultiLoad(v, 1, "iisX", i, cnum, - cnum<0 ? 0 : pTab->aCol[cnum].zName); + cnum<0 ? 0 : pTab->aCol[cnum].zCnName); if( pPragma->iArg ){ sqlite3VdbeMultiLoad(v, 4, "isiX", pIdx->aSortOrder[i], @@ -119082,8 +137768,9 @@ SQLITE_PRIVATE void sqlite3Pragma( int i; pTab = sqlite3FindTable(db, zRight, zDb); if( pTab ){ + int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema); pParse->nMem = 5; - sqlite3CodeVerifySchema(pParse, iDb); + sqlite3CodeVerifySchema(pParse, iTabDb); for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){ const char *azOrigin[] = { "c", "u", "pk" }; sqlite3VdbeMultiLoad(v, 1, "isisi", @@ -119122,20 +137809,23 @@ SQLITE_PRIVATE void sqlite3Pragma( } break; -#ifdef SQLITE_INTROSPECTION_PRAGMAS +#ifndef SQLITE_OMIT_INTROSPECTION_PRAGMAS case PragTyp_FUNCTION_LIST: { int i; HashElem *j; FuncDef *p; - pParse->nMem = 2; + int showInternFunc = (db->mDbFlags & DBFLAG_InternalFunc)!=0; + pParse->nMem = 6; for(i=0; iu.pHash ){ - sqlite3VdbeMultiLoad(v, 1, "si", p->zName, 1); + assert( p->funcFlags & SQLITE_FUNC_BUILTIN ); + pragmaFunclistLine(v, p, 1, showInternFunc); } } for(j=sqliteHashFirst(&db->aFunc); j; j=sqliteHashNext(j)){ p = (FuncDef*)sqliteHashData(j); - sqlite3VdbeMultiLoad(v, 1, "si", p->zName, 0); + assert( (p->funcFlags & SQLITE_FUNC_BUILTIN)==0 ); + pragmaFunclistLine(v, p, 0, showInternFunc); } } break; @@ -119168,12 +137858,13 @@ SQLITE_PRIVATE void sqlite3Pragma( FKey *pFK; Table *pTab; pTab = sqlite3FindTable(db, zRight, zDb); - if( pTab ){ - pFK = pTab->pFKey; + if( pTab && IsOrdinaryTable(pTab) ){ + pFK = pTab->u.tab.pFKey; if( pFK ){ - int i = 0; + int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema); + int i = 0; pParse->nMem = 8; - sqlite3CodeVerifySchema(pParse, iDb); + sqlite3CodeVerifySchema(pParse, iTabDb); while(pFK){ int j; for(j=0; jnCol; j++){ @@ -119181,7 +137872,7 @@ SQLITE_PRIVATE void sqlite3Pragma( i, j, pFK->zTo, - pTab->aCol[pFK->aCol[j].iFrom].zName, + pTab->aCol[pFK->aCol[j].iFrom].zCnName, pFK->aCol[j].zCol, actionName(pFK->aAction[1]), /* ON UPDATE */ actionName(pFK->aAction[0]), /* ON DELETE */ @@ -119208,7 +137899,6 @@ SQLITE_PRIVATE void sqlite3Pragma( HashElem *k; /* Loop counter: Next table in schema */ int x; /* result variable */ int regResult; /* 3 registers to hold a result row */ - int regKey; /* Register to hold key for checking the FK */ int regRow; /* Registers to hold a row from pTab */ int addrTop; /* Top of a loop checking foreign keys */ int addrOk; /* Jump here if the key is OK */ @@ -119216,9 +137906,7 @@ SQLITE_PRIVATE void sqlite3Pragma( regResult = pParse->nMem+1; pParse->nMem += 4; - regKey = ++pParse->nMem; regRow = ++pParse->nMem; - sqlite3CodeVerifySchema(pParse, iDb); k = sqliteHashFirst(&db->aDb[iDb].pSchema->tblHash); while( k ){ if( zRight ){ @@ -119228,12 +137916,16 @@ SQLITE_PRIVATE void sqlite3Pragma( pTab = (Table*)sqliteHashData(k); k = sqliteHashNext(k); } - if( pTab==0 || pTab->pFKey==0 ) continue; + if( pTab==0 || !IsOrdinaryTable(pTab) || pTab->u.tab.pFKey==0 ) continue; + iDb = sqlite3SchemaToIndex(db, pTab->pSchema); + zDb = db->aDb[iDb].zDbSName; + sqlite3CodeVerifySchema(pParse, iDb); sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); - if( pTab->nCol+regRow>pParse->nMem ) pParse->nMem = pTab->nCol + regRow; + sqlite3TouchRegister(pParse, pTab->nCol+regRow); sqlite3OpenTable(pParse, 0, iDb, pTab, OP_OpenRead); sqlite3VdbeLoadString(v, regResult, pTab->zName); - for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){ + assert( IsOrdinaryTable(pTab) ); + for(i=1, pFK=pTab->u.tab.pFKey; pFK; i++, pFK=pFK->pNextFrom){ pParent = sqlite3FindTable(db, pFK->zTo, zDb); if( pParent==0 ) continue; pIdx = 0; @@ -119255,20 +137947,22 @@ SQLITE_PRIVATE void sqlite3Pragma( if( pFK ) break; if( pParse->nTabnTab = i; addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, 0); VdbeCoverage(v); - for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){ + assert( IsOrdinaryTable(pTab) ); + for(i=1, pFK=pTab->u.tab.pFKey; pFK; i++, pFK=pFK->pNextFrom){ pParent = sqlite3FindTable(db, pFK->zTo, zDb); pIdx = 0; aiCols = 0; if( pParent ){ x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, &aiCols); - assert( x==0 ); + assert( x==0 || db->mallocFailed ); } - addrOk = sqlite3VdbeMakeLabel(v); + addrOk = sqlite3VdbeMakeLabel(pParse); /* Generate code to read the child key values into registers - ** regRow..regRow+n. If any of the child key values are NULL, this - ** row cannot cause an FK violation. Jump directly to addrOk in + ** regRow..regRow+n. If any of the child key values are NULL, this + ** row cannot cause an FK violation. Jump directly to addrOk in ** this case. */ + sqlite3TouchRegister(pParse, regRow + pFK->nCol); for(j=0; jnCol; j++){ int iCol = aiCols ? aiCols[j] : pFK->aCol[j].iFrom; sqlite3ExprCodeGetColumnOfTable(v, pTab, 0, iCol, regRow+j); @@ -119278,15 +137972,15 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Generate code to query the parent index for a matching parent ** key. If a match is found, jump to addrOk. */ if( pIdx ){ - sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey, + sqlite3VdbeAddOp4(v, OP_Affinity, regRow, pFK->nCol, 0, sqlite3IndexAffinityStr(db,pIdx), pFK->nCol); - sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0); + sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regRow, pFK->nCol); VdbeCoverage(v); }else if( pParent ){ int jmp = sqlite3VdbeCurrentAddr(v)+2; sqlite3VdbeAddOp3(v, OP_SeekRowid, i, jmp, regRow); VdbeCoverage(v); sqlite3VdbeGoto(v, addrOk); - assert( pFK->nCol==1 ); + assert( pFK->nCol==1 || db->mallocFailed ); } /* Generate code to report an FK violation to the caller. */ @@ -119308,19 +138002,7 @@ SQLITE_PRIVATE void sqlite3Pragma( #endif /* !defined(SQLITE_OMIT_TRIGGER) */ #endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */ -#ifndef NDEBUG - case PragTyp_PARSER_TRACE: { - if( zRight ){ - if( sqlite3GetBoolean(zRight, 0) ){ - sqlite3ParserTrace(stdout, "parser: "); - }else{ - sqlite3ParserTrace(0, 0); - } - } - } - break; -#endif - +#ifndef SQLITE_OMIT_CASE_SENSITIVE_LIKE_PRAGMA /* Reinstall the LIKE and GLOB functions. The variant of LIKE ** used will be case sensitive or not depending on the RHS. */ @@ -119330,6 +138012,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } } break; +#endif /* SQLITE_OMIT_CASE_SENSITIVE_LIKE_PRAGMA */ #ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX # define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100 @@ -119343,13 +138026,26 @@ SQLITE_PRIVATE void sqlite3Pragma( ** ** Verify the integrity of the database. ** - ** The "quick_check" is reduced version of + ** The "quick_check" is reduced version of ** integrity_check designed to detect most database corruption ** without the overhead of cross-checking indexes. Quick_check - ** is linear time wherease integrity_check is O(NlogN). + ** is linear time whereas integrity_check is O(NlogN). + ** + ** The maximum number of errors is 100 by default. A different default + ** can be specified using a numeric parameter N. + ** + ** Or, the parameter N can be the name of a table. In that case, only + ** the one table named is verified. The freelist is only verified if + ** the named table is "sqlite_schema" (or one of its aliases). + ** + ** All schemas are checked by default. To check just a single + ** schema, use the form: + ** + ** PRAGMA schema.integrity_check; */ case PragTyp_INTEGRITY_CHECK: { int i, j, addr, mxErr; + Table *pObjTab = 0; /* Check only this one table, if not NULL */ int isQuick = (sqlite3Tolower(zLeft[0])=='q'); @@ -119372,9 +138068,13 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Set the maximum error count */ mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; if( zRight ){ - sqlite3GetInt32(zRight, &mxErr); - if( mxErr<=0 ){ - mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; + if( sqlite3GetInt32(zRight, &mxErr) ){ + if( mxErr<=0 ){ + mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; + } + }else{ + pObjTab = sqlite3LocateTable(pParse, 0, zRight, + iDb>=0 ? db->aDb[iDb].zDbSName : 0); } } sqlite3VdbeAddOp2(v, OP_Integer, mxErr-1, 1); /* reg[1] holds errors left */ @@ -119391,6 +138091,7 @@ SQLITE_PRIVATE void sqlite3Pragma( if( iDb>=0 && i!=iDb ) continue; sqlite3CodeVerifySchema(pParse, i); + pParse->okConstFactor = 0; /* tag-20230327-1 */ /* Do an integrity check of the B-Tree ** @@ -119403,15 +138104,21 @@ SQLITE_PRIVATE void sqlite3Pragma( Table *pTab = sqliteHashData(x); /* Current table */ Index *pIdx; /* An index on pTab */ int nIdx; /* Number of indexes on pTab */ + if( pObjTab && pObjTab!=pTab ) continue; if( HasRowid(pTab) ) cnt++; for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){ cnt++; } if( nIdx>mxIdx ) mxIdx = nIdx; } + if( cnt==0 ) continue; + if( pObjTab ) cnt++; aRoot = sqlite3DbMallocRawNN(db, sizeof(int)*(cnt+1)); if( aRoot==0 ) break; - for(cnt=0, x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ + cnt = 0; + if( pObjTab ) aRoot[++cnt] = 0; + for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ Table *pTab = sqliteHashData(x); Index *pIdx; + if( pObjTab && pObjTab!=pTab ) continue; if( HasRowid(pTab) ) aRoot[++cnt] = pTab->tnum; for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ aRoot[++cnt] = pIdx->tnum; @@ -119420,7 +138127,7 @@ SQLITE_PRIVATE void sqlite3Pragma( aRoot[0] = cnt; /* Make sure sufficient number of registers have been allocated */ - pParse->nMem = MAX( pParse->nMem, 8+mxIdx ); + sqlite3TouchRegister(pParse, 8+mxIdx); sqlite3ClearTempRegCache(pParse); /* Do the b-tree integrity checks */ @@ -119439,18 +138146,28 @@ SQLITE_PRIVATE void sqlite3Pragma( for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ Table *pTab = sqliteHashData(x); Index *pIdx, *pPk; - Index *pPrior = 0; + Index *pPrior = 0; /* Previous index */ int loopTop; int iDataCur, iIdxCur; int r1 = -1; + int bStrict; /* True for a STRICT table */ + int r2; /* Previous key for WITHOUT ROWID tables */ + int mxCol; /* Maximum non-virtual column number */ - if( pTab->tnum<1 ) continue; /* Skip VIEWs or VIRTUAL TABLEs */ - pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab); - sqlite3ExprCacheClear(pParse); + if( !IsOrdinaryTable(pTab) ) continue; + if( pObjTab && pObjTab!=pTab ) continue; + if( isQuick || HasRowid(pTab) ){ + pPk = 0; + r2 = 0; + }else{ + pPk = sqlite3PrimaryKeyIndex(pTab); + r2 = sqlite3GetTempRange(pParse, pPk->nKeyCol); + sqlite3VdbeAddOp3(v, OP_Null, 1, r2, r2+pPk->nKeyCol-1); + } sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead, 0, 1, 0, &iDataCur, &iIdxCur); /* reg[7] counts the number of entries in the table. - ** reg[8+i] counts the number of entries in the i-th index + ** reg[8+i] counts the number of entries in the i-th index */ sqlite3VdbeAddOp2(v, OP_Integer, 0, 7); for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ @@ -119460,35 +138177,194 @@ SQLITE_PRIVATE void sqlite3Pragma( assert( sqlite3NoTempsInRange(pParse,1,7+j) ); sqlite3VdbeAddOp2(v, OP_Rewind, iDataCur, 0); VdbeCoverage(v); loopTop = sqlite3VdbeAddOp2(v, OP_AddImm, 7, 1); - /* Verify that all NOT NULL columns really are NOT NULL */ + + /* Fetch the right-most column from the table. This will cause + ** the entire record header to be parsed and sanity checked. It + ** will also prepopulate the cursor column cache that is used + ** by the OP_IsType code, so it is a required step. + */ + assert( !IsVirtual(pTab) ); + if( HasRowid(pTab) ){ + mxCol = -1; + for(j=0; jnCol; j++){ + if( (pTab->aCol[j].colFlags & COLFLAG_VIRTUAL)==0 ) mxCol++; + } + if( mxCol==pTab->iPKey ) mxCol--; + }else{ + /* COLFLAG_VIRTUAL columns are not included in the WITHOUT ROWID + ** PK index column-count, so there is no need to account for them + ** in this case. */ + mxCol = sqlite3PrimaryKeyIndex(pTab)->nColumn-1; + } + if( mxCol>=0 ){ + sqlite3VdbeAddOp3(v, OP_Column, iDataCur, mxCol, 3); + sqlite3VdbeTypeofColumn(v, 3); + } + + if( !isQuick ){ + if( pPk ){ + /* Verify WITHOUT ROWID keys are in ascending order */ + int a1; + char *zErr; + a1 = sqlite3VdbeAddOp4Int(v, OP_IdxGT, iDataCur, 0,r2,pPk->nKeyCol); + VdbeCoverage(v); + sqlite3VdbeAddOp1(v, OP_IsNull, r2); VdbeCoverage(v); + zErr = sqlite3MPrintf(db, + "row not in PRIMARY KEY order for %s", + pTab->zName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + integrityCheckResultRow(v); + sqlite3VdbeJumpHere(v, a1); + sqlite3VdbeJumpHere(v, a1+1); + for(j=0; jnKeyCol; j++){ + sqlite3ExprCodeLoadIndexColumn(pParse, pPk, iDataCur, j, r2+j); + } + } + } + /* Verify datatypes for all columns: + ** + ** (1) NOT NULL columns may not contain a NULL + ** (2) Datatype must be exact for non-ANY columns in STRICT tables + ** (3) Datatype for TEXT columns in non-STRICT tables must be + ** NULL, TEXT, or BLOB. + ** (4) Datatype for numeric columns in non-STRICT tables must not + ** be a TEXT value that can be losslessly converted to numeric. + */ + bStrict = (pTab->tabFlags & TF_Strict)!=0; for(j=0; jnCol; j++){ char *zErr; - int jmp2; + Column *pCol = pTab->aCol + j; /* The column to be checked */ + int labelError; /* Jump here to report an error */ + int labelOk; /* Jump here if all looks ok */ + int p1, p3, p4; /* Operands to the OP_IsType opcode */ + int doTypeCheck; /* Check datatypes (besides NOT NULL) */ + if( j==pTab->iPKey ) continue; - if( pTab->aCol[j].notNull==0 ) continue; - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3); - sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); - jmp2 = sqlite3VdbeAddOp1(v, OP_NotNull, 3); VdbeCoverage(v); - zErr = sqlite3MPrintf(db, "NULL value in %s.%s", pTab->zName, - pTab->aCol[j].zName); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + if( bStrict ){ + doTypeCheck = pCol->eCType>COLTYPE_ANY; + }else{ + doTypeCheck = pCol->affinity>SQLITE_AFF_BLOB; + } + if( pCol->notNull==0 && !doTypeCheck ) continue; + + /* Compute the operands that will be needed for OP_IsType */ + p4 = SQLITE_NULL; + if( pCol->colFlags & COLFLAG_VIRTUAL ){ + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3); + p1 = -1; + p3 = 3; + }else{ + if( pCol->iDflt ){ + sqlite3_value *pDfltValue = 0; + sqlite3ValueFromExpr(db, sqlite3ColumnExpr(pTab,pCol), ENC(db), + pCol->affinity, &pDfltValue); + if( pDfltValue ){ + p4 = sqlite3_value_type(pDfltValue); + sqlite3ValueFree(pDfltValue); + } + } + p1 = iDataCur; + if( !HasRowid(pTab) ){ + testcase( j!=sqlite3TableColumnToStorage(pTab, j) ); + p3 = sqlite3TableColumnToIndex(sqlite3PrimaryKeyIndex(pTab), j); + }else{ + p3 = sqlite3TableColumnToStorage(pTab,j); + testcase( p3!=j); + } + } + + labelError = sqlite3VdbeMakeLabel(pParse); + labelOk = sqlite3VdbeMakeLabel(pParse); + if( pCol->notNull ){ + /* (1) NOT NULL columns may not contain a NULL */ + int jmp3; + int jmp2 = sqlite3VdbeAddOp4Int(v, OP_IsType, p1, labelOk, p3, p4); + VdbeCoverage(v); + if( p1<0 ){ + sqlite3VdbeChangeP5(v, 0x0f); /* INT, REAL, TEXT, or BLOB */ + jmp3 = jmp2; + }else{ + sqlite3VdbeChangeP5(v, 0x0d); /* INT, TEXT, or BLOB */ + /* OP_IsType does not detect NaN values in the database file + ** which should be treated as a NULL. So if the header type + ** is REAL, we have to load the actual data using OP_Column + ** to reliably determine if the value is a NULL. */ + sqlite3VdbeAddOp3(v, OP_Column, p1, p3, 3); + jmp3 = sqlite3VdbeAddOp2(v, OP_NotNull, 3, labelOk); + VdbeCoverage(v); + } + zErr = sqlite3MPrintf(db, "NULL value in %s.%s", pTab->zName, + pCol->zCnName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + if( doTypeCheck ){ + sqlite3VdbeGoto(v, labelError); + sqlite3VdbeJumpHere(v, jmp2); + sqlite3VdbeJumpHere(v, jmp3); + }else{ + /* VDBE byte code will fall thru */ + } + } + if( bStrict && doTypeCheck ){ + /* (2) Datatype must be exact for non-ANY columns in STRICT tables*/ + static unsigned char aStdTypeMask[] = { + 0x1f, /* ANY */ + 0x18, /* BLOB */ + 0x11, /* INT */ + 0x11, /* INTEGER */ + 0x13, /* REAL */ + 0x14 /* TEXT */ + }; + sqlite3VdbeAddOp4Int(v, OP_IsType, p1, labelOk, p3, p4); + assert( pCol->eCType>=1 && pCol->eCType<=sizeof(aStdTypeMask) ); + sqlite3VdbeChangeP5(v, aStdTypeMask[pCol->eCType-1]); + VdbeCoverage(v); + zErr = sqlite3MPrintf(db, "non-%s value in %s.%s", + sqlite3StdType[pCol->eCType-1], + pTab->zName, pTab->aCol[j].zCnName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + }else if( !bStrict && pCol->affinity==SQLITE_AFF_TEXT ){ + /* (3) Datatype for TEXT columns in non-STRICT tables must be + ** NULL, TEXT, or BLOB. */ + sqlite3VdbeAddOp4Int(v, OP_IsType, p1, labelOk, p3, p4); + sqlite3VdbeChangeP5(v, 0x1c); /* NULL, TEXT, or BLOB */ + VdbeCoverage(v); + zErr = sqlite3MPrintf(db, "NUMERIC value in %s.%s", + pTab->zName, pTab->aCol[j].zCnName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + }else if( !bStrict && pCol->affinity>=SQLITE_AFF_NUMERIC ){ + /* (4) Datatype for numeric columns in non-STRICT tables must not + ** be a TEXT value that can be converted to numeric. */ + sqlite3VdbeAddOp4Int(v, OP_IsType, p1, labelOk, p3, p4); + sqlite3VdbeChangeP5(v, 0x1b); /* NULL, INT, FLOAT, or BLOB */ + VdbeCoverage(v); + if( p1>=0 ){ + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3); + } + sqlite3VdbeAddOp4(v, OP_Affinity, 3, 1, 0, "C", P4_STATIC); + sqlite3VdbeAddOp4Int(v, OP_IsType, -1, labelOk, 3, p4); + sqlite3VdbeChangeP5(v, 0x1c); /* NULL, TEXT, or BLOB */ + VdbeCoverage(v); + zErr = sqlite3MPrintf(db, "TEXT value in %s.%s", + pTab->zName, pTab->aCol[j].zCnName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + } + sqlite3VdbeResolveLabel(v, labelError); integrityCheckResultRow(v); - sqlite3VdbeJumpHere(v, jmp2); + sqlite3VdbeResolveLabel(v, labelOk); } /* Verify CHECK constraints */ if( pTab->pCheck && (db->flags & SQLITE_IgnoreChecks)==0 ){ ExprList *pCheck = sqlite3ExprListDup(db, pTab->pCheck, 0); if( db->mallocFailed==0 ){ - int addrCkFault = sqlite3VdbeMakeLabel(v); - int addrCkOk = sqlite3VdbeMakeLabel(v); + int addrCkFault = sqlite3VdbeMakeLabel(pParse); + int addrCkOk = sqlite3VdbeMakeLabel(pParse); char *zErr; int k; pParse->iSelfTab = iDataCur + 1; - sqlite3ExprCachePush(pParse); for(k=pCheck->nExpr-1; k>0; k--){ sqlite3ExprIfFalse(pParse, pCheck->a[k].pExpr, addrCkFault, 0); } - sqlite3ExprIfTrue(pParse, pCheck->a[0].pExpr, addrCkOk, + sqlite3ExprIfTrue(pParse, pCheck->a[0].pExpr, addrCkOk, SQLITE_JUMPIFNULL); sqlite3VdbeResolveLabel(v, addrCkFault); pParse->iSelfTab = 0; @@ -119497,18 +138373,15 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); integrityCheckResultRow(v); sqlite3VdbeResolveLabel(v, addrCkOk); - sqlite3ExprCachePop(pParse); } sqlite3ExprListDelete(db, pCheck); } if( !isQuick ){ /* Omit the remaining tests for quick_check */ - /* Sanity check on record header decoding */ - sqlite3VdbeAddOp3(v, OP_Column, iDataCur, pTab->nCol-1, 3); - sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); /* Validate index entries for the current row */ for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ - int jmp2, jmp3, jmp4, jmp5; - int ckUniq = sqlite3VdbeMakeLabel(v); + int jmp2, jmp3, jmp4, jmp5, label6; + int kk; + int ckUniq = sqlite3VdbeMakeLabel(pParse); if( pPk==pIdx ) continue; r1 = sqlite3GenerateIndexKey(pParse, pIdx, iDataCur, 0, 0, &jmp3, pPrior, r1); @@ -119525,13 +138398,49 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3); jmp4 = integrityCheckResultRow(v); sqlite3VdbeJumpHere(v, jmp2); + + /* The OP_IdxRowid opcode is an optimized version of OP_Column + ** that extracts the rowid off the end of the index record. + ** But it only works correctly if index record does not have + ** any extra bytes at the end. Verify that this is the case. */ + if( HasRowid(pTab) ){ + int jmp7; + sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur+j, 3); + jmp7 = sqlite3VdbeAddOp3(v, OP_Eq, 3, 0, r1+pIdx->nColumn-1); + VdbeCoverageNeverNull(v); + sqlite3VdbeLoadString(v, 3, + "rowid not at end-of-record for row "); + sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3); + sqlite3VdbeLoadString(v, 4, " of index "); + sqlite3VdbeGoto(v, jmp5-1); + sqlite3VdbeJumpHere(v, jmp7); + } + + /* Any indexed columns with non-BINARY collations must still hold + ** the exact same text value as the table. */ + label6 = 0; + for(kk=0; kknKeyCol; kk++){ + if( pIdx->azColl[kk]==sqlite3StrBINARY ) continue; + if( label6==0 ) label6 = sqlite3VdbeMakeLabel(pParse); + sqlite3VdbeAddOp3(v, OP_Column, iIdxCur+j, kk, 3); + sqlite3VdbeAddOp3(v, OP_Ne, 3, label6, r1+kk); VdbeCoverage(v); + } + if( label6 ){ + int jmp6 = sqlite3VdbeAddOp0(v, OP_Goto); + sqlite3VdbeResolveLabel(v, label6); + sqlite3VdbeLoadString(v, 3, "row "); + sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3); + sqlite3VdbeLoadString(v, 4, " values differ from index "); + sqlite3VdbeGoto(v, jmp5-1); + sqlite3VdbeJumpHere(v, jmp6); + } + /* For UNIQUE indexes, verify that only one entry exists with the ** current key. The entry is unique if (1) any column is NULL ** or (2) the next entry has a different key */ if( IsUniqueIndex(pIdx) ){ - int uniqOk = sqlite3VdbeMakeLabel(v); + int uniqOk = sqlite3VdbeMakeLabel(pParse); int jmp6; - int kk; for(kk=0; kknKeyCol; kk++){ int iCol = pIdx->aiColumn[kk]; assert( iCol!=XN_ROWID && iColnCol ); @@ -119554,7 +138463,6 @@ SQLITE_PRIVATE void sqlite3Pragma( } sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); VdbeCoverage(v); sqlite3VdbeJumpHere(v, loopTop-1); -#ifndef SQLITE_OMIT_BTREECOUNT if( !isQuick ){ sqlite3VdbeLoadString(v, 2, "wrong # of entries in index "); for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ @@ -119567,9 +138475,11 @@ SQLITE_PRIVATE void sqlite3Pragma( integrityCheckResultRow(v); sqlite3VdbeJumpHere(v, addr); } + if( pPk ){ + sqlite3ReleaseTempRange(pParse, r2, pPk->nKeyCol); + } } -#endif /* SQLITE_OMIT_BTREECOUNT */ - } + } } { static const int iLn = VDBE_OFFSET_LINENO(2); @@ -119611,7 +138521,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** encoding that will be used for the main database file if a new file ** is created. If an existing main database file is opened, then the ** default text encoding for the existing database is used. - ** + ** ** In all cases new databases created using the ATTACH command are ** created to use the same default text encoding as the main database. If ** the main database has not been initialized and/or created when ATTACH @@ -119649,14 +138559,12 @@ SQLITE_PRIVATE void sqlite3Pragma( ** will be overwritten when the schema is next loaded. If it does not ** already exists, it will be created to use the new encoding value. */ - if( - !(DbHasProperty(db, 0, DB_SchemaLoaded)) || - DbHasProperty(db, 0, DB_Empty) - ){ + if( (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){ for(pEnc=&encnames[0]; pEnc->zName; pEnc++){ if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){ - SCHEMA_ENC(db) = ENC(db) = - pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE; + u8 enc = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE; + SCHEMA_ENC(db) = enc; + sqlite3SetTextEncoding(db, enc); break; } } @@ -119719,6 +138627,12 @@ SQLITE_PRIVATE void sqlite3Pragma( aOp[1].p1 = iDb; aOp[1].p2 = iCookie; aOp[1].p3 = sqlite3Atoi(zRight); + aOp[1].p5 = 1; + if( iCookie==BTREE_SCHEMA_VERSION && (db->flags & SQLITE_Defensive)!=0 ){ + /* Do not allow the use of PRAGMA schema_version=VALUE in defensive + ** mode. Change the OP_SetCookie opcode into a no-op. */ + aOp[1].opcode = OP_Noop; + } }else{ /* Read the specified cookie value */ static const VdbeOpList readCookie[] = { @@ -119766,7 +138680,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** Checkpoint the database. */ case PragTyp_WAL_CHECKPOINT: { - int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED); + int iBt = (pId2->z?iDb:SQLITE_MAX_DB); int eMode = SQLITE_CHECKPOINT_PASSIVE; if( zRight ){ if( sqlite3StrICmp(zRight, "full")==0 ){ @@ -119795,8 +138709,8 @@ SQLITE_PRIVATE void sqlite3Pragma( if( zRight ){ sqlite3_wal_autocheckpoint(db, sqlite3Atoi(zRight)); } - returnSingleInt(v, - db->xWalCallback==sqlite3WalDefaultHook ? + returnSingleInt(v, + db->xWalCallback==sqlite3WalDefaultHook ? SQLITE_PTR_TO_INT(db->pWalArg) : 0); } break; @@ -119836,7 +138750,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** 0x0002 Run ANALYZE on tables that might benefit. On by default. ** See below for additional information. ** - ** 0x0004 (Not yet implemented) Record usage and performance + ** 0x0004 (Not yet implemented) Record usage and performance ** information from the current session in the ** database file so that it will be available to "optimize" ** pragmas run by future database connections. @@ -119847,7 +138761,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** The default MASK is and always shall be 0xfffe. 0xfffe means perform all ** of the optimizations listed above except Debug Mode, including new ** optimizations that have not yet been invented. If new optimizations are - ** ever added that should be off by default, those off-by-default + ** ever added that should be off by default, those off-by-default ** optimizations will have bitmasks of 0x10000 or larger. ** ** DETERMINATION OF WHEN TO RUN ANALYZE @@ -119875,7 +138789,7 @@ SQLITE_PRIVATE void sqlite3Pragma( Schema *pSchema; /* The current schema */ Table *pTab; /* A table in the schema */ Index *pIdx; /* An index of the table */ - LogEst szThreshold; /* Size threshold above which reanalysis is needd */ + LogEst szThreshold; /* Size threshold above which reanalysis needed */ char *zSubSql; /* SQL statement for the OP_SqlExec opcode */ u32 opMask; /* Mask of operations to perform */ @@ -119908,7 +138822,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } if( szThreshold ){ sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp3(v, OP_IfSmaller, iTabCur, + sqlite3VdbeAddOp3(v, OP_IfSmaller, iTabCur, sqlite3VdbeCurrentAddr(v)+2+(opMask&1), szThreshold); VdbeCoverage(v); } @@ -119965,6 +138879,27 @@ SQLITE_PRIVATE void sqlite3Pragma( break; } + /* + ** PRAGMA hard_heap_limit + ** PRAGMA hard_heap_limit = N + ** + ** Invoke sqlite3_hard_heap_limit64() to query or set the hard heap + ** limit. The hard heap limit can be activated or lowered by this + ** pragma, but not raised or deactivated. Only the + ** sqlite3_hard_heap_limit64() C-language API can raise or deactivate + ** the hard heap limit. This allows an application to set a heap limit + ** constraint that cannot be relaxed by an untrusted SQL script. + */ + case PragTyp_HARD_HEAP_LIMIT: { + sqlite3_int64 N; + if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){ + sqlite3_int64 iPrior = sqlite3_hard_heap_limit64(-1); + if( N>0 && (iPrior==0 || iPrior>N) ) sqlite3_hard_heap_limit64(N); + } + returnSingleInt(v, sqlite3_hard_heap_limit64(-1)); + break; + } + /* ** PRAGMA threads ** PRAGMA threads = N @@ -119984,6 +138919,25 @@ SQLITE_PRIVATE void sqlite3Pragma( break; } + /* + ** PRAGMA analysis_limit + ** PRAGMA analysis_limit = N + ** + ** Configure the maximum number of rows that ANALYZE will examine + ** in each index that it looks at. Return the new limit. + */ + case PragTyp_ANALYSIS_LIMIT: { + sqlite3_int64 N; + if( zRight + && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK /* IMP: R-40975-20399 */ + && N>=0 + ){ + db->nAnalysisLimit = (int)(N&0x7fffffff); + } + returnSingleInt(v, db->nAnalysisLimit); /* IMP: R-57594-65522 */ + break; + } + #if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) /* ** Report the current state of file logs for all databases @@ -120002,7 +138956,7 @@ SQLITE_PRIVATE void sqlite3Pragma( pBt = db->aDb[i].pBt; if( pBt==0 || sqlite3BtreePager(pBt)==0 ){ zState = "closed"; - }else if( sqlite3_file_control(db, i ? db->aDb[i].zDbSName : 0, + }else if( sqlite3_file_control(db, i ? db->aDb[i].zDbSName : 0, SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){ zState = azLockName[j]; } @@ -120012,45 +138966,11 @@ SQLITE_PRIVATE void sqlite3Pragma( } #endif -#ifdef SQLITE_HAS_CODEC - case PragTyp_KEY: { - if( zRight ) sqlite3_key_v2(db, zDb, zRight, sqlite3Strlen30(zRight)); - break; - } - case PragTyp_REKEY: { - if( zRight ) sqlite3_rekey_v2(db, zDb, zRight, sqlite3Strlen30(zRight)); - break; - } - case PragTyp_HEXKEY: { - if( zRight ){ - u8 iByte; - int i; - char zKey[40]; - for(i=0, iByte=0; imPragFlg & PragFlg_NoColumns1) && zRight ){ sqlite3VdbeVerifyNoResultRow(v); @@ -120091,7 +139011,7 @@ struct PragmaVtabCursor { char *azArg[2]; /* Value of the argument and schema */ }; -/* +/* ** Pragma virtual table module xConnect method. */ static int pragmaVtabConnect( @@ -120119,7 +139039,6 @@ static int pragmaVtabConnect( } if( i==0 ){ sqlite3_str_appendf(&acc, "(\"%s\"", pPragma->zName); - cSep = ','; i++; } j = 0; @@ -120154,7 +139073,7 @@ static int pragmaVtabConnect( return rc; } -/* +/* ** Pragma virtual table module xDisconnect method. */ static int pragmaVtabDisconnect(sqlite3_vtab *pVtab){ @@ -120252,11 +139171,11 @@ static int pragmaVtabNext(sqlite3_vtab_cursor *pVtabCursor){ return rc; } -/* +/* ** Pragma virtual table module xFilter method. */ static int pragmaVtabFilter( - sqlite3_vtab_cursor *pVtabCursor, + sqlite3_vtab_cursor *pVtabCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv ){ @@ -120311,11 +139230,11 @@ static int pragmaVtabEof(sqlite3_vtab_cursor *pVtabCursor){ } /* The xColumn method simply returns the corresponding column from -** the PRAGMA. +** the PRAGMA. */ static int pragmaVtabColumn( - sqlite3_vtab_cursor *pVtabCursor, - sqlite3_context *ctx, + sqlite3_vtab_cursor *pVtabCursor, + sqlite3_context *ctx, int i ){ PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; @@ -120328,7 +139247,7 @@ static int pragmaVtabColumn( return SQLITE_OK; } -/* +/* ** Pragma virtual table module xRowid method. */ static int pragmaVtabRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *p){ @@ -120361,7 +139280,8 @@ static const sqlite3_module pragmaVtabModule = { 0, /* xRename - rename the table */ 0, /* xSavepoint */ 0, /* xRelease */ - 0 /* xRollbackTo */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ }; /* @@ -120408,21 +139328,63 @@ SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3 *db, const char *zName) */ static void corruptSchema( InitData *pData, /* Initialization context */ - const char *zObj, /* Object being parsed at the point of error */ + char **azObj, /* Type and name of object being parsed */ const char *zExtra /* Error information */ ){ sqlite3 *db = pData->db; - if( !db->mallocFailed && (db->flags & SQLITE_WriteSchema)==0 ){ + if( db->mallocFailed ){ + pData->rc = SQLITE_NOMEM_BKPT; + }else if( pData->pzErrMsg[0]!=0 ){ + /* A error message has already been generated. Do not overwrite it */ + }else if( pData->mInitFlags & (INITFLAG_AlterMask) ){ + static const char *azAlterType[] = { + "rename", + "drop column", + "add column" + }; + *pData->pzErrMsg = sqlite3MPrintf(db, + "error in %s %s after %s: %s", azObj[0], azObj[1], + azAlterType[(pData->mInitFlags&INITFLAG_AlterMask)-1], + zExtra + ); + pData->rc = SQLITE_ERROR; + }else if( db->flags & SQLITE_WriteSchema ){ + pData->rc = SQLITE_CORRUPT_BKPT; + }else{ char *z; - if( zObj==0 ) zObj = "?"; + const char *zObj = azObj[1] ? azObj[1] : "?"; z = sqlite3MPrintf(db, "malformed database schema (%s)", zObj); if( zExtra && zExtra[0] ) z = sqlite3MPrintf(db, "%z - %s", z, zExtra); - sqlite3DbFree(db, *pData->pzErrMsg); *pData->pzErrMsg = z; + pData->rc = SQLITE_CORRUPT_BKPT; } - pData->rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_CORRUPT_BKPT; } +/* +** Check to see if any sibling index (another index on the same table) +** of pIndex has the same root page number, and if it does, return true. +** This would indicate a corrupt schema. +*/ +SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index *pIndex){ + Index *p; + for(p=pIndex->pTable->pIndex; p; p=p->pNext){ + if( p->tnum==pIndex->tnum && p!=pIndex ) return 1; + } + return 0; +} + +/* forward declaration */ +static int sqlite3Prepare( + sqlite3 *db, /* Database handle. */ + const char *zSql, /* UTF-8 encoded SQL statement. */ + int nBytes, /* Length of zSql in bytes. */ + u32 prepFlags, /* Zero or more SQLITE_PREPARE_* flags */ + Vdbe *pReprepare, /* VM being reprepared */ + sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ + const char **pzTail /* OUT: End of parsed string */ +); + + /* ** This is the callback routine for the code that initializes the ** database. See sqlite3Init() below for additional information. @@ -120430,9 +139392,11 @@ static void corruptSchema( ** ** Each callback contains the following information: ** -** argv[0] = name of thing being created -** argv[1] = root page number for table or index. 0 for trigger or view. -** argv[2] = SQL text for the CREATE statement. +** argv[0] = type of object: "table", "index", "trigger", or "view". +** argv[1] = name of thing being created +** argv[2] = associated table if an index or trigger +** argv[3] = root page number for table or index. 0 for trigger or view. +** argv[4] = SQL text for the CREATE statement. ** */ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char **NotUsed){ @@ -120440,24 +139404,32 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char sqlite3 *db = pData->db; int iDb = pData->iDb; - assert( argc==3 ); + assert( argc==5 ); UNUSED_PARAMETER2(NotUsed, argc); assert( sqlite3_mutex_held(db->mutex) ); - DbClearProperty(db, iDb, DB_Empty); + db->mDbFlags |= DBFLAG_EncodingFixed; + if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */ + pData->nInitRow++; if( db->mallocFailed ){ - corruptSchema(pData, argv[0], 0); + corruptSchema(pData, argv, 0); return 1; } assert( iDb>=0 && iDbnDb ); - if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */ - if( argv[1]==0 ){ - corruptSchema(pData, argv[0], 0); - }else if( sqlite3_strnicmp(argv[2],"create ",7)==0 ){ + if( argv[3]==0 ){ + corruptSchema(pData, argv, 0); + }else if( argv[4] + && 'c'==sqlite3UpperToLower[(unsigned char)argv[4][0]] + && 'r'==sqlite3UpperToLower[(unsigned char)argv[4][1]] ){ /* Call the parser to process a CREATE TABLE, INDEX or VIEW. ** But because db->init.busy is set to 1, no VDBE code is generated ** or executed. All the parser does is build the internal data ** structures that describe the table, index, or view. + ** + ** No other valid SQL statement, other than the variable CREATE statements, + ** can begin with the letters "C" and "R". Thus, it is not possible run + ** any other kind of statement while parsing the schema, even a corrupt + ** schema. */ int rc; u8 saved_iDb = db->init.iDb; @@ -120466,28 +139438,37 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char assert( db->init.busy ); db->init.iDb = iDb; - db->init.newTnum = sqlite3Atoi(argv[1]); + if( sqlite3GetUInt32(argv[3], &db->init.newTnum)==0 + || (db->init.newTnum>pData->mxPage && pData->mxPage>0) + ){ + if( sqlite3Config.bExtraSchemaChecks ){ + corruptSchema(pData, argv, "invalid rootpage"); + } + } db->init.orphanTrigger = 0; - TESTONLY(rcp = ) sqlite3_prepare(db, argv[2], -1, &pStmt, 0); + db->init.azInit = (const char**)argv; + pStmt = 0; + TESTONLY(rcp = ) sqlite3Prepare(db, argv[4], -1, 0, 0, &pStmt, 0); rc = db->errCode; assert( (rc&0xFF)==(rcp&0xFF) ); db->init.iDb = saved_iDb; - assert( saved_iDb==0 || (db->mDbFlags & DBFLAG_Vacuum)!=0 ); + /* assert( saved_iDb==0 || (db->mDbFlags & DBFLAG_Vacuum)!=0 ); */ if( SQLITE_OK!=rc ){ if( db->init.orphanTrigger ){ assert( iDb==1 ); }else{ - pData->rc = rc; + if( rc > pData->rc ) pData->rc = rc; if( rc==SQLITE_NOMEM ){ sqlite3OomFault(db); }else if( rc!=SQLITE_INTERRUPT && (rc&0xFF)!=SQLITE_LOCKED ){ - corruptSchema(pData, argv[0], sqlite3_errmsg(db)); + corruptSchema(pData, argv, sqlite3_errmsg(db)); } } } + db->init.azInit = sqlite3StdType; /* Any array of string ptrs will do */ sqlite3_finalize(pStmt); - }else if( argv[0]==0 || (argv[2]!=0 && argv[2][0]!=0) ){ - corruptSchema(pData, argv[0], 0); + }else if( argv[1]==0 || (argv[4]!=0 && argv[4][0]!=0) ){ + corruptSchema(pData, argv, 0); }else{ /* If the SQL column is blank it means this is an index that ** was created to be the PRIMARY KEY or to fulfill a UNIQUE @@ -120496,16 +139477,18 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char ** to do here is record the root page number for that index. */ Index *pIndex; - pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName); + pIndex = sqlite3FindIndex(db, argv[1], db->aDb[iDb].zDbSName); if( pIndex==0 ){ - /* This can occur if there exists an index on a TEMP table which - ** has the same name as another index on a permanent index. Since - ** the permanent table is hidden by the TEMP table, we can also - ** safely ignore the index on the permanent table. - */ - /* Do Nothing */; - }else if( sqlite3GetInt32(argv[1], &pIndex->tnum)==0 ){ - corruptSchema(pData, argv[0], "invalid rootpage"); + corruptSchema(pData, argv, "orphan index"); + }else + if( sqlite3GetUInt32(argv[3],&pIndex->tnum)==0 + || pIndex->tnum<2 + || pIndex->tnum>pData->mxPage + || sqlite3IndexHasDuplicateRootPage(pIndex) + ){ + if( sqlite3Config.bExtraSchemaChecks ){ + corruptSchema(pData, argv, "invalid rootpage"); + } } } return 0; @@ -120519,18 +139502,19 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char ** auxiliary databases. Return one of the SQLITE_ error codes to ** indicate success or failure. */ -static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ +SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFlags){ int rc; int i; #ifndef SQLITE_OMIT_DEPRECATED int size; #endif Db *pDb; - char const *azArg[4]; + char const *azArg[6]; int meta[5]; InitData initData; - const char *zMasterName; + const char *zSchemaTabName; int openedTransaction = 0; + int mask = ((db->mDbFlags & DBFLAG_EncodingFixed) | ~DBFLAG_EncodingFixed); assert( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 ); assert( iDb>=0 && iDbnDb ); @@ -120540,21 +139524,27 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ db->init.busy = 1; - /* Construct the in-memory representation schema tables (sqlite_master or - ** sqlite_temp_master) by invoking the parser directly. The appropriate + /* Construct the in-memory representation schema tables (sqlite_schema or + ** sqlite_temp_schema) by invoking the parser directly. The appropriate ** table name will be inserted automatically by the parser so we can just ** use the abbreviation "x" here. The parser will also automatically tag ** the schema table as read-only. */ - azArg[0] = zMasterName = SCHEMA_TABLE(iDb); - azArg[1] = "1"; - azArg[2] = "CREATE TABLE x(type text,name text,tbl_name text," + azArg[0] = "table"; + azArg[1] = zSchemaTabName = SCHEMA_TABLE(iDb); + azArg[2] = azArg[1]; + azArg[3] = "1"; + azArg[4] = "CREATE TABLE x(type text,name text,tbl_name text," "rootpage int,sql text)"; - azArg[3] = 0; + azArg[5] = 0; initData.db = db; initData.iDb = iDb; initData.rc = SQLITE_OK; initData.pzErrMsg = pzErrMsg; - sqlite3InitCallback(&initData, 3, (char **)azArg, 0); + initData.mInitFlags = mFlags; + initData.nInitRow = 0; + initData.mxPage = 0; + sqlite3InitCallback(&initData, 5, (char **)azArg, 0); + db->mDbFlags &= mask; if( initData.rc ){ rc = initData.rc; goto error_out; @@ -120571,11 +139561,11 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ } /* If there is not already a read-only (or read-write) transaction opened - ** on the b-tree database, open one now. If a transaction is opened, it + ** on the b-tree database, open one now. If a transaction is opened, it ** will be closed before this function returns. */ sqlite3BtreeEnter(pDb->pBt); - if( !sqlite3BtreeIsInReadTrans(pDb->pBt) ){ - rc = sqlite3BtreeBeginTrans(pDb->pBt, 0); + if( sqlite3BtreeTxnState(pDb->pBt)==SQLITE_TXN_NONE ){ + rc = sqlite3BtreeBeginTrans(pDb->pBt, 0, 0); if( rc!=SQLITE_OK ){ sqlite3SetString(pzErrMsg, db, sqlite3ErrStr(rc)); goto initone_error_out; @@ -120614,27 +139604,32 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ ** as sqlite3.enc. */ if( meta[BTREE_TEXT_ENCODING-1] ){ /* text encoding */ - if( iDb==0 ){ -#ifndef SQLITE_OMIT_UTF16 + if( iDb==0 && (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){ u8 encoding; +#ifndef SQLITE_OMIT_UTF16 /* If opening the main database, set ENC(db). */ encoding = (u8)meta[BTREE_TEXT_ENCODING-1] & 3; if( encoding==0 ) encoding = SQLITE_UTF8; - ENC(db) = encoding; #else - ENC(db) = SQLITE_UTF8; + encoding = SQLITE_UTF8; #endif + if( db->nVdbeActive>0 && encoding!=ENC(db) + && (db->mDbFlags & DBFLAG_Vacuum)==0 + ){ + rc = SQLITE_LOCKED; + goto initone_error_out; + }else{ + sqlite3SetTextEncoding(db, encoding); + } }else{ /* If opening an attached database, the encoding much match ENC(db) */ - if( meta[BTREE_TEXT_ENCODING-1]!=ENC(db) ){ + if( (meta[BTREE_TEXT_ENCODING-1] & 3)!=ENC(db) ){ sqlite3SetString(pzErrMsg, db, "attached databases must use the same" " text encoding as main database"); rc = SQLITE_ERROR; goto initone_error_out; } } - }else{ - DbSetProperty(db, iDb, DB_Empty); } pDb->pSchema->enc = ENC(db); @@ -120671,17 +139666,18 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ ** indices that the user might have created. */ if( iDb==0 && meta[BTREE_FILE_FORMAT-1]>=4 ){ - db->flags &= ~SQLITE_LegacyFileFmt; + db->flags &= ~(u64)SQLITE_LegacyFileFmt; } /* Read the schema information out of the schema tables */ assert( db->init.busy ); + initData.mxPage = sqlite3BtreeLastPage(pDb->pBt); { char *zSql; - zSql = sqlite3MPrintf(db, - "SELECT name, rootpage, sql FROM \"%w\".%s ORDER BY rowid", - db->aDb[iDb].zDbSName, zMasterName); + zSql = sqlite3MPrintf(db, + "SELECT*FROM\"%w\".%s ORDER BY rowid", + db->aDb[iDb].zDbSName, zSchemaTabName); #ifndef SQLITE_OMIT_AUTHORIZATION { sqlite3_xauth xAuth; @@ -120701,18 +139697,22 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ } #endif } + assert( pDb == &(db->aDb[iDb]) ); if( db->mallocFailed ){ rc = SQLITE_NOMEM_BKPT; sqlite3ResetAllSchemasOfConnection(db); - } - if( rc==SQLITE_OK || (db->flags&SQLITE_WriteSchema)){ - /* Black magic: If the SQLITE_WriteSchema flag is set, then consider - ** the schema loaded, even if errors occurred. In this situation the - ** current sqlite3_prepare() operation will fail, but the following one - ** will attempt to compile the supplied statement against whatever subset - ** of the schema was loaded before the error occurred. The primary - ** purpose of this is to allow access to the sqlite_master table - ** even when its contents have been corrupted. + pDb = &db->aDb[iDb]; + }else + if( rc==SQLITE_OK || ((db->flags&SQLITE_NoSchemaError) && rc!=SQLITE_NOMEM)){ + /* Hack: If the SQLITE_NoSchemaError flag is set, then consider + ** the schema loaded, even if errors (other than OOM) occurred. In + ** this situation the current sqlite3_prepare() operation will fail, + ** but the following one will attempt to compile the supplied statement + ** against whatever subset of the schema was loaded before the error + ** occurred. + ** + ** The primary purpose of this is to allow access to the sqlite_schema + ** table even when its contents have been corrupted. */ DbSetProperty(db, iDb, DB_SchemaLoaded); rc = SQLITE_OK; @@ -120746,13 +139746,12 @@ error_out: ** error occurs, write an error message into *pzErrMsg. ** ** After a database is initialized, the DB_SchemaLoaded bit is set -** bit is set in the flags field of the Db structure. If the database -** file was of zero-length, then the DB_Empty flag is also set. +** bit is set in the flags field of the Db structure. */ SQLITE_PRIVATE int sqlite3Init(sqlite3 *db, char **pzErrMsg){ int i, rc; int commit_internal = !(db->mDbFlags&DBFLAG_SchemaChange); - + assert( sqlite3_mutex_held(db->mutex) ); assert( sqlite3BtreeHoldsMutex(db->aDb[0].pBt) ); assert( db->init.busy==0 ); @@ -120760,14 +139759,14 @@ SQLITE_PRIVATE int sqlite3Init(sqlite3 *db, char **pzErrMsg){ assert( db->nDb>0 ); /* Do the main schema first */ if( !DbHasProperty(db, 0, DB_SchemaLoaded) ){ - rc = sqlite3InitOne(db, 0, pzErrMsg); + rc = sqlite3InitOne(db, 0, pzErrMsg, 0); if( rc ) return rc; } /* All other schemas after the main schema. The "temp" schema must be last */ for(i=db->nDb-1; i>0; i--){ assert( i==1 || sqlite3BtreeHoldsMutex(db->aDb[i].pBt) ); if( !DbHasProperty(db, i, DB_SchemaLoaded) ){ - rc = sqlite3InitOne(db, i, pzErrMsg); + rc = sqlite3InitOne(db, i, pzErrMsg, 0); if( rc ) return rc; } } @@ -120817,25 +139816,26 @@ static void schemaIsValid(Parse *pParse){ if( pBt==0 ) continue; /* If there is not already a read-only (or read-write) transaction opened - ** on the b-tree database, open one now. If a transaction is opened, it + ** on the b-tree database, open one now. If a transaction is opened, it ** will be closed immediately after reading the meta-value. */ - if( !sqlite3BtreeIsInReadTrans(pBt) ){ - rc = sqlite3BtreeBeginTrans(pBt, 0); + if( sqlite3BtreeTxnState(pBt)==SQLITE_TXN_NONE ){ + rc = sqlite3BtreeBeginTrans(pBt, 0, 0); if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ sqlite3OomFault(db); + pParse->rc = SQLITE_NOMEM; } if( rc!=SQLITE_OK ) return; openedTransaction = 1; } - /* Read the schema cookie from the database. If it does not match the + /* Read the schema cookie from the database. If it does not match the ** value stored as part of the in-memory schema representation, ** set Parse.rc to SQLITE_SCHEMA. */ sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&cookie); assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( cookie!=db->aDb[iDb].pSchema->schema_cookie ){ + if( DbHasProperty(db, iDb, DB_SchemaLoaded) ) pParse->rc = SQLITE_SCHEMA; sqlite3ResetOneSchema(db, iDb); - pParse->rc = SQLITE_SCHEMA; } /* Close the transaction, if one was opened. */ @@ -120853,17 +139853,18 @@ static void schemaIsValid(Parse *pParse){ ** attached database is returned. */ SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){ - int i = -1000000; + int i = -32768; - /* If pSchema is NULL, then return -1000000. This happens when code in + /* If pSchema is NULL, then return -32768. This happens when code in ** expr.c is trying to resolve a reference to a transient table (i.e. one - ** created by a sub-select). In this case the return value of this + ** created by a sub-select). In this case the return value of this ** function should never be used. ** - ** We return -1000000 instead of the more usual -1 simply because using - ** -1000000 as the incorrect index into db->aDb[] is much + ** We return -32768 instead of the more usual -1 simply because using + ** -32768 as the incorrect index into db->aDb[] is much ** more likely to cause a segfault than -1 (of course there are assert() - ** statements too, but it never hurts to play the odds). + ** statements too, but it never hurts to play the odds) and + ** -32768 will still fit into a 16-bit signed integer. */ assert( sqlite3_mutex_held(db->mutex) ); if( pSchema ){ @@ -120881,17 +139882,109 @@ SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){ /* ** Free all memory allocations in the pParse object */ -SQLITE_PRIVATE void sqlite3ParserReset(Parse *pParse){ +SQLITE_PRIVATE void sqlite3ParseObjectReset(Parse *pParse){ sqlite3 *db = pParse->db; - sqlite3DbFree(db, pParse->aLabel); - sqlite3ExprListDelete(db, pParse->pConstExpr); - if( db ){ - assert( db->lookaside.bDisable >= pParse->disableLookaside ); - db->lookaside.bDisable -= pParse->disableLookaside; + assert( db!=0 ); + assert( db->pParse==pParse ); + assert( pParse->nested==0 ); +#ifndef SQLITE_OMIT_SHARED_CACHE + if( pParse->aTableLock ) sqlite3DbNNFreeNN(db, pParse->aTableLock); +#endif + while( pParse->pCleanup ){ + ParseCleanup *pCleanup = pParse->pCleanup; + pParse->pCleanup = pCleanup->pNext; + pCleanup->xCleanup(db, pCleanup->pPtr); + sqlite3DbNNFreeNN(db, pCleanup); } + if( pParse->aLabel ) sqlite3DbNNFreeNN(db, pParse->aLabel); + if( pParse->pConstExpr ){ + sqlite3ExprListDelete(db, pParse->pConstExpr); + } + assert( db->lookaside.bDisable >= pParse->disableLookaside ); + db->lookaside.bDisable -= pParse->disableLookaside; + db->lookaside.sz = db->lookaside.bDisable ? 0 : db->lookaside.szTrue; + assert( pParse->db->pParse==pParse ); + db->pParse = pParse->pOuterParse; + pParse->db = 0; pParse->disableLookaside = 0; } +/* +** Add a new cleanup operation to a Parser. The cleanup should happen when +** the parser object is destroyed. But, beware: the cleanup might happen +** immediately. +** +** Use this mechanism for uncommon cleanups. There is a higher setup +** cost for this mechanism (an extra malloc), so it should not be used +** for common cleanups that happen on most calls. But for less +** common cleanups, we save a single NULL-pointer comparison in +** sqlite3ParseObjectReset(), which reduces the total CPU cycle count. +** +** If a memory allocation error occurs, then the cleanup happens immediately. +** When either SQLITE_DEBUG or SQLITE_COVERAGE_TEST are defined, the +** pParse->earlyCleanup flag is set in that case. Calling code show verify +** that test cases exist for which this happens, to guard against possible +** use-after-free errors following an OOM. The preferred way to do this is +** to immediately follow the call to this routine with: +** +** testcase( pParse->earlyCleanup ); +** +** This routine returns a copy of its pPtr input (the third parameter) +** except if an early cleanup occurs, in which case it returns NULL. So +** another way to check for early cleanup is to check the return value. +** Or, stop using the pPtr parameter with this call and use only its +** return value thereafter. Something like this: +** +** pObj = sqlite3ParserAddCleanup(pParse, destructor, pObj); +*/ +SQLITE_PRIVATE void *sqlite3ParserAddCleanup( + Parse *pParse, /* Destroy when this Parser finishes */ + void (*xCleanup)(sqlite3*,void*), /* The cleanup routine */ + void *pPtr /* Pointer to object to be cleaned up */ +){ + ParseCleanup *pCleanup = sqlite3DbMallocRaw(pParse->db, sizeof(*pCleanup)); + if( pCleanup ){ + pCleanup->pNext = pParse->pCleanup; + pParse->pCleanup = pCleanup; + pCleanup->pPtr = pPtr; + pCleanup->xCleanup = xCleanup; + }else{ + xCleanup(pParse->db, pPtr); + pPtr = 0; +#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) + pParse->earlyCleanup = 1; +#endif + } + return pPtr; +} + +/* +** Turn bulk memory into a valid Parse object and link that Parse object +** into database connection db. +** +** Call sqlite3ParseObjectReset() to undo this operation. +** +** Caution: Do not confuse this routine with sqlite3ParseObjectInit() which +** is generated by Lemon. +*/ +SQLITE_PRIVATE void sqlite3ParseObjectInit(Parse *pParse, sqlite3 *db){ + memset(PARSE_HDR(pParse), 0, PARSE_HDR_SZ); + memset(PARSE_TAIL(pParse), 0, PARSE_TAIL_SZ); + assert( db->pParse!=pParse ); + pParse->pOuterParse = db->pParse; + db->pParse = pParse; + pParse->db = db; + if( db->mallocFailed ) sqlite3ErrorMsg(pParse, "out of memory"); +} + +/* +** Maximum number of times that we will try again to prepare a statement +** that returns SQLITE_ERROR_RETRY. +*/ +#ifndef SQLITE_MAX_PREPARE_RETRY +# define SQLITE_MAX_PREPARE_RETRY 25 +#endif + /* ** Compile the UTF-8 encoded SQL statement zSql into a statement handle. */ @@ -120904,16 +139997,28 @@ static int sqlite3Prepare( sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ const char **pzTail /* OUT: End of parsed string */ ){ - char *zErrMsg = 0; /* Error message */ int rc = SQLITE_OK; /* Result code */ int i; /* Loop counter */ Parse sParse; /* Parsing context */ - memset(&sParse, 0, PARSE_HDR_SZ); + /* sqlite3ParseObjectInit(&sParse, db); // inlined for performance */ + memset(PARSE_HDR(&sParse), 0, PARSE_HDR_SZ); memset(PARSE_TAIL(&sParse), 0, PARSE_TAIL_SZ); - sParse.pReprepare = pReprepare; + sParse.pOuterParse = db->pParse; + db->pParse = &sParse; + sParse.db = db; + if( pReprepare ){ + sParse.pReprepare = pReprepare; + sParse.explain = sqlite3_stmt_isexplain((sqlite3_stmt*)pReprepare); + }else{ + assert( sParse.pReprepare==0 ); + } assert( ppStmt && *ppStmt==0 ); - /* assert( !db->mallocFailed ); // not true with SQLITE_USE_ALLOCA */ + if( db->mallocFailed ){ + sqlite3ErrorMsg(&sParse, "out of memory"); + db->errCode = rc = SQLITE_NOMEM; + goto end_prepare; + } assert( sqlite3_mutex_held(db->mutex) ); /* For a long-term use prepared statement avoid the use of @@ -120921,8 +140026,9 @@ static int sqlite3Prepare( */ if( prepFlags & SQLITE_PREPARE_PERSISTENT ){ sParse.disableLookaside++; - db->lookaside.bDisable++; + DisableLookaside; } + sParse.prepFlags = prepFlags & 0xff; /* Check to verify that it is possible to get a read lock on all ** database schemas. The inability to get a read lock indicates that @@ -120939,31 +140045,34 @@ static int sqlite3Prepare( ** This thread is currently holding mutexes on all Btrees (because ** of the sqlite3BtreeEnterAll() in sqlite3LockAndPrepare()) so it ** is not possible for another thread to start a new schema change - ** while this routine is running. Hence, we do not need to hold - ** locks on the schema, we just need to make sure nobody else is + ** while this routine is running. Hence, we do not need to hold + ** locks on the schema, we just need to make sure nobody else is ** holding them. ** ** Note that setting READ_UNCOMMITTED overrides most lock detection, ** but it does *not* override schema lock detection, so this all still ** works even if READ_UNCOMMITTED is set. */ - for(i=0; inDb; i++) { - Btree *pBt = db->aDb[i].pBt; - if( pBt ){ - assert( sqlite3BtreeHoldsMutex(pBt) ); - rc = sqlite3BtreeSchemaLocked(pBt); - if( rc ){ - const char *zDb = db->aDb[i].zDbSName; - sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb); - testcase( db->flags & SQLITE_ReadUncommit ); - goto end_prepare; + if( !db->noSharedCache ){ + for(i=0; inDb; i++) { + Btree *pBt = db->aDb[i].pBt; + if( pBt ){ + assert( sqlite3BtreeHoldsMutex(pBt) ); + rc = sqlite3BtreeSchemaLocked(pBt); + if( rc ){ + const char *zDb = db->aDb[i].zDbSName; + sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb); + testcase( db->flags & SQLITE_ReadUncommit ); + goto end_prepare; + } } } } - sqlite3VtabUnlockList(db); +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( db->pDisconnect ) sqlite3VtabUnlockList(db); +#endif - sParse.db = db; if( nBytes>=0 && (nBytes==0 || zSql[nBytes-1]!=0) ){ char *zSqlCopy; int mxLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH]; @@ -120976,68 +140085,50 @@ static int sqlite3Prepare( } zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes); if( zSqlCopy ){ - sqlite3RunParser(&sParse, zSqlCopy, &zErrMsg); + sqlite3RunParser(&sParse, zSqlCopy); sParse.zTail = &zSql[sParse.zTail-zSqlCopy]; sqlite3DbFree(db, zSqlCopy); }else{ sParse.zTail = &zSql[nBytes]; } }else{ - sqlite3RunParser(&sParse, zSql, &zErrMsg); + sqlite3RunParser(&sParse, zSql); } assert( 0==sParse.nQueryLoop ); - if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK; - if( sParse.checkSchema ){ - schemaIsValid(&sParse); - } - if( db->mallocFailed ){ - sParse.rc = SQLITE_NOMEM_BKPT; - } if( pzTail ){ *pzTail = sParse.zTail; } - rc = sParse.rc; - -#ifndef SQLITE_OMIT_EXPLAIN - if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){ - static const char * const azColName[] = { - "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment", - "id", "parent", "notused", "detail" - }; - int iFirst, mx; - if( sParse.explain==2 ){ - sqlite3VdbeSetNumCols(sParse.pVdbe, 4); - iFirst = 8; - mx = 12; - }else{ - sqlite3VdbeSetNumCols(sParse.pVdbe, 8); - iFirst = 0; - mx = 8; - } - for(i=iFirst; iinit.busy==0 ){ sqlite3VdbeSetSql(sParse.pVdbe, zSql, (int)(sParse.zTail-zSql), prepFlags); } - if( sParse.pVdbe && (rc!=SQLITE_OK || db->mallocFailed) ){ - sqlite3VdbeFinalize(sParse.pVdbe); - assert(!(*ppStmt)); + if( db->mallocFailed ){ + sParse.rc = SQLITE_NOMEM_BKPT; + sParse.checkSchema = 0; + } + if( sParse.rc!=SQLITE_OK && sParse.rc!=SQLITE_DONE ){ + if( sParse.checkSchema && db->init.busy==0 ){ + schemaIsValid(&sParse); + } + if( sParse.pVdbe ){ + sqlite3VdbeFinalize(sParse.pVdbe); + } + assert( 0==(*ppStmt) ); + rc = sParse.rc; + if( sParse.zErrMsg ){ + sqlite3ErrorWithMsg(db, rc, "%s", sParse.zErrMsg); + sqlite3DbFree(db, sParse.zErrMsg); + }else{ + sqlite3Error(db, rc); + } }else{ + assert( sParse.zErrMsg==0 ); *ppStmt = (sqlite3_stmt*)sParse.pVdbe; + rc = SQLITE_OK; + sqlite3ErrorClear(db); } - if( zErrMsg ){ - sqlite3ErrorWithMsg(db, rc, "%s", zErrMsg); - sqlite3DbFree(db, zErrMsg); - }else{ - sqlite3Error(db, rc); - } /* Delete any TriggerPrg structures allocated while parsing this statement. */ while( sParse.pTriggerPrg ){ @@ -121048,7 +140139,7 @@ static int sqlite3Prepare( end_prepare: - sqlite3ParserReset(&sParse); + sqlite3ParseObjectReset(&sParse); return rc; } static int sqlite3LockAndPrepare( @@ -121078,21 +140169,24 @@ static int sqlite3LockAndPrepare( ** reset is considered a permanent error. */ rc = sqlite3Prepare(db, zSql, nBytes, prepFlags, pOld, ppStmt, pzTail); assert( rc==SQLITE_OK || *ppStmt==0 ); - }while( rc==SQLITE_ERROR_RETRY + if( rc==SQLITE_OK || db->mallocFailed ) break; + }while( (rc==SQLITE_ERROR_RETRY && (cnt++)errMask)==rc ); + db->busyHandler.nBusy = 0; sqlite3_mutex_leave(db->mutex); return rc; } + /* ** Rerun the compilation of a statement after a schema change. ** ** If the statement is successfully recompiled, return SQLITE_OK. Otherwise, ** if the statement cannot be recompiled because another connection has -** locked the sqlite3_master table, return SQLITE_LOCKED. If any other error +** locked the sqlite3_schema table, return SQLITE_LOCKED. If any other error ** occurs, return SQLITE_SCHEMA. */ SQLITE_PRIVATE int sqlite3Reprepare(Vdbe *p){ @@ -121193,7 +140287,7 @@ SQLITE_API int sqlite3_prepare_v3( ** Compile the UTF-16 encoded SQL statement zSql into a statement handle. */ static int sqlite3Prepare16( - sqlite3 *db, /* Database handle. */ + sqlite3 *db, /* Database handle. */ const void *zSql, /* UTF-16 encoded SQL statement. */ int nBytes, /* Length of zSql in bytes. */ u32 prepFlags, /* Zero or more SQLITE_PREPARE_* flags */ @@ -121236,7 +140330,7 @@ static int sqlite3Prepare16( int chars_parsed = sqlite3Utf8CharLen(zSql8, (int)(zTail8-zSql8)); *pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, chars_parsed); } - sqlite3DbFree(db, zSql8); + sqlite3DbFree(db, zSql8); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; @@ -121251,7 +140345,7 @@ static int sqlite3Prepare16( ** occurs. */ SQLITE_API int sqlite3_prepare16( - sqlite3 *db, /* Database handle. */ + sqlite3 *db, /* Database handle. */ const void *zSql, /* UTF-16 encoded SQL statement. */ int nBytes, /* Length of zSql in bytes. */ sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ @@ -121263,7 +140357,7 @@ SQLITE_API int sqlite3_prepare16( return rc; } SQLITE_API int sqlite3_prepare16_v2( - sqlite3 *db, /* Database handle. */ + sqlite3 *db, /* Database handle. */ const void *zSql, /* UTF-16 encoded SQL statement. */ int nBytes, /* Length of zSql in bytes. */ sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ @@ -121275,7 +140369,7 @@ SQLITE_API int sqlite3_prepare16_v2( return rc; } SQLITE_API int sqlite3_prepare16_v3( - sqlite3 *db, /* Database handle. */ + sqlite3 *db, /* Database handle. */ const void *zSql, /* UTF-16 encoded SQL statement. */ int nBytes, /* Length of zSql in bytes. */ unsigned int prepFlags, /* Zero or more SQLITE_PREPARE_* flags */ @@ -121310,20 +140404,6 @@ SQLITE_API int sqlite3_prepare16_v3( */ /* #include "sqliteInt.h" */ -/* -** Trace output macros -*/ -#if SELECTTRACE_ENABLED -/***/ int sqlite3SelectTrace = 0; -# define SELECTTRACE(K,P,S,X) \ - if(sqlite3SelectTrace&(K)) \ - sqlite3DebugPrintf("%s/%d/%p: ",(S)->zSelName,(P)->addrExplain,(S)),\ - sqlite3DebugPrintf X -#else -# define SELECTTRACE(K,P,S,X) -#endif - - /* ** An instance of the following object is used to record information about ** how to process the DISTINCT keyword, to simplify passing that information @@ -121331,7 +140411,7 @@ SQLITE_API int sqlite3_prepare16_v3( */ typedef struct DistinctCtx DistinctCtx; struct DistinctCtx { - u8 isTnct; /* True if the DISTINCT keyword is present */ + u8 isTnct; /* 0: Not distinct. 1: DISTICT 2: DISTINCT and ORDER BY */ u8 eTnctType; /* One of the WHERE_DISTINCT_* operators */ int tabTnct; /* Ephemeral table used for DISTINCT processing */ int addrTnct; /* Address of OP_OpenEphemeral opcode for tabTnct */ @@ -121364,8 +140444,8 @@ struct SortCtx { int labelBkOut; /* Start label for the block-output subroutine */ int addrSortIndex; /* Address of the OP_SorterOpen or OP_OpenEphemeral */ int labelDone; /* Jump here when done, ex: LIMIT reached */ + int labelOBLopt; /* Jump here when sorter is full */ u8 sortFlags; /* Zero or more SORTFLAG_* bits */ - u8 bOrderedInnerLoop; /* ORDER BY correctly sorts the inner loop */ #ifdef SQLITE_ENABLE_SORTER_REFERENCES u8 nDefer; /* Number of valid entries in aDefer[] */ struct DeferredCsr { @@ -121375,14 +140455,22 @@ struct SortCtx { } aDefer[4]; #endif struct RowLoadInfo *pDeferredRowLoad; /* Deferred row loading info or NULL */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrPush; /* First instruction to push data into sorter */ + int addrPushEnd; /* Last instruction that pushes data into sorter */ +#endif }; #define SORTFLAG_UseSorter 0x01 /* Use SorterOpen instead of OpenEphemeral */ /* ** Delete all the content of a Select structure. Deallocate the structure -** itself only if bFree is true. +** itself depending on the value of bFree +** +** If bFree==1, call sqlite3DbFree() on the p object. +** If bFree==0, Leave the first Select object unfreed */ static void clearSelect(sqlite3 *db, Select *p, int bFree){ + assert( db!=0 ); while( p ){ Select *pPrior = p->pPrior; sqlite3ExprListDelete(db, p->pEList); @@ -121393,7 +140481,16 @@ static void clearSelect(sqlite3 *db, Select *p, int bFree){ sqlite3ExprListDelete(db, p->pOrderBy); sqlite3ExprDelete(db, p->pLimit); if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith); - if( bFree ) sqlite3DbFreeNN(db, p); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( OK_IF_ALWAYS_TRUE(p->pWinDefn) ){ + sqlite3WindowListDelete(db, p->pWinDefn); + } + while( p->pWin ){ + assert( p->pWin->ppThis==&p->pWin ); + sqlite3WindowUnlinkFromSelect(p->pWin); + } +#endif + if( bFree ) sqlite3DbNNFreeNN(db, p); p = pPrior; bFree = 1; } @@ -121405,6 +140502,7 @@ static void clearSelect(sqlite3 *db, Select *p, int bFree){ SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest *pDest, int eDest, int iParm){ pDest->eDest = (u8)eDest; pDest->iSDParm = iParm; + pDest->iSDParm2 = 0; pDest->zAffSdst = 0; pDest->iSdst = 0; pDest->nSdst = 0; @@ -121426,9 +140524,9 @@ SQLITE_PRIVATE Select *sqlite3SelectNew( u32 selFlags, /* Flag parameters, such as SF_Distinct */ Expr *pLimit /* LIMIT value. NULL means not used */ ){ - Select *pNew; + Select *pNew, *pAllocated; Select standin; - pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) ); + pAllocated = pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) ); if( pNew==0 ){ assert( pParse->db->mallocFailed ); pNew = &standin; @@ -121442,9 +140540,7 @@ SQLITE_PRIVATE Select *sqlite3SelectNew( pNew->selFlags = selFlags; pNew->iLimit = 0; pNew->iOffset = 0; -#if SELECTTRACE_ENABLED - pNew->zSelName[0] = 0; -#endif + pNew->selId = ++pParse->nSelect; pNew->addrOpenEphm[0] = -1; pNew->addrOpenEphm[1] = -1; pNew->nSelectRow = 0; @@ -121458,27 +140554,19 @@ SQLITE_PRIVATE Select *sqlite3SelectNew( pNew->pNext = 0; pNew->pLimit = pLimit; pNew->pWith = 0; +#ifndef SQLITE_OMIT_WINDOWFUNC + pNew->pWin = 0; + pNew->pWinDefn = 0; +#endif if( pParse->db->mallocFailed ) { clearSelect(pParse->db, pNew, pNew!=&standin); - pNew = 0; + pAllocated = 0; }else{ assert( pNew->pSrc!=0 || pParse->nErr>0 ); } - assert( pNew!=&standin ); - return pNew; + return pAllocated; } -#if SELECTTRACE_ENABLED -/* -** Set the name of a Select object -*/ -SQLITE_PRIVATE void sqlite3SelectSetName(Select *p, const char *zName){ - if( p && zName ){ - sqlite3_snprintf(sizeof(p->zSelName), p->zSelName, "%s", zName); - } -} -#endif - /* ** Delete the given Select structure and all of its substructures. @@ -121511,6 +140599,52 @@ static Select *findRightmost(Select *p){ ** ** If an illegal or unsupported join type is seen, then still return ** a join type, but put an error in the pParse structure. +** +** These are the valid join types: +** +** +** pA pB pC Return Value +** ------- ----- ----- ------------ +** CROSS - - JT_CROSS +** INNER - - JT_INNER +** LEFT - - JT_LEFT|JT_OUTER +** LEFT OUTER - JT_LEFT|JT_OUTER +** RIGHT - - JT_RIGHT|JT_OUTER +** RIGHT OUTER - JT_RIGHT|JT_OUTER +** FULL - - JT_LEFT|JT_RIGHT|JT_OUTER +** FULL OUTER - JT_LEFT|JT_RIGHT|JT_OUTER +** NATURAL INNER - JT_NATURAL|JT_INNER +** NATURAL LEFT - JT_NATURAL|JT_LEFT|JT_OUTER +** NATURAL LEFT OUTER JT_NATURAL|JT_LEFT|JT_OUTER +** NATURAL RIGHT - JT_NATURAL|JT_RIGHT|JT_OUTER +** NATURAL RIGHT OUTER JT_NATURAL|JT_RIGHT|JT_OUTER +** NATURAL FULL - JT_NATURAL|JT_LEFT|JT_RIGHT +** NATURAL FULL OUTER JT_NATRUAL|JT_LEFT|JT_RIGHT +** +** To preserve historical compatibly, SQLite also accepts a variety +** of other non-standard and in many cases nonsensical join types. +** This routine makes as much sense at it can from the nonsense join +** type and returns a result. Examples of accepted nonsense join types +** include but are not limited to: +** +** INNER CROSS JOIN -> same as JOIN +** NATURAL CROSS JOIN -> same as NATURAL JOIN +** OUTER LEFT JOIN -> same as LEFT JOIN +** LEFT NATURAL JOIN -> same as NATURAL LEFT JOIN +** LEFT RIGHT JOIN -> same as FULL JOIN +** RIGHT OUTER FULL JOIN -> same as FULL JOIN +** CROSS CROSS CROSS JOIN -> same as JOIN +** +** The only restrictions on the join type name are: +** +** * "INNER" cannot appear together with "OUTER", "LEFT", "RIGHT", +** or "FULL". +** +** * "CROSS" cannot appear together with "OUTER", "LEFT", "RIGHT, +** or "FULL". +** +** * If "OUTER" is present then there must also be one of +** "LEFT", "RIGHT", or "FULL" */ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *pC){ int jointype = 0; @@ -121523,13 +140657,13 @@ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *p u8 nChar; /* Length of the keyword in characters */ u8 code; /* Join type mask */ } aKeyword[] = { - /* natural */ { 0, 7, JT_NATURAL }, - /* left */ { 6, 4, JT_LEFT|JT_OUTER }, - /* outer */ { 10, 5, JT_OUTER }, - /* right */ { 14, 5, JT_RIGHT|JT_OUTER }, - /* full */ { 19, 4, JT_LEFT|JT_RIGHT|JT_OUTER }, - /* inner */ { 23, 5, JT_INNER }, - /* cross */ { 28, 5, JT_INNER|JT_CROSS }, + /* (0) natural */ { 0, 7, JT_NATURAL }, + /* (1) left */ { 6, 4, JT_LEFT|JT_OUTER }, + /* (2) outer */ { 10, 5, JT_OUTER }, + /* (3) right */ { 14, 5, JT_RIGHT|JT_OUTER }, + /* (4) full */ { 19, 4, JT_LEFT|JT_RIGHT|JT_OUTER }, + /* (5) inner */ { 23, 5, JT_INNER }, + /* (6) cross */ { 28, 5, JT_INNER|JT_CROSS }, }; int i, j; apAll[0] = pA; @@ -121538,7 +140672,7 @@ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *p for(i=0; i<3 && apAll[i]; i++){ p = apAll[i]; for(j=0; jn==aKeyword[j].nChar + if( p->n==aKeyword[j].nChar && sqlite3StrNICmp((char*)p->z, &zKeyText[aKeyword[j].i], p->n)==0 ){ jointype |= aKeyword[j].code; break; @@ -121552,18 +140686,15 @@ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *p } if( (jointype & (JT_INNER|JT_OUTER))==(JT_INNER|JT_OUTER) || - (jointype & JT_ERROR)!=0 + (jointype & JT_ERROR)!=0 || + (jointype & (JT_OUTER|JT_LEFT|JT_RIGHT))==JT_OUTER ){ - const char *zSp = " "; - assert( pB!=0 ); - if( pC==0 ){ zSp++; } - sqlite3ErrorMsg(pParse, "unknown or unsupported join type: " - "%T %T%s%T", pA, pB, zSp, pC); - jointype = JT_INNER; - }else if( (jointype & JT_OUTER)!=0 - && (jointype & (JT_LEFT|JT_RIGHT))!=JT_LEFT ){ - sqlite3ErrorMsg(pParse, - "RIGHT and FULL OUTER JOINs are not currently supported"); + const char *zSp1 = " "; + const char *zSp2 = " "; + if( pB==0 ){ zSp1++; } + if( pC==0 ){ zSp2++; } + sqlite3ErrorMsg(pParse, "unknown join type: " + "%T%s%T%s%T", pA, zSp1, pB, zSp2, pC); jointype = JT_INNER; } return jointype; @@ -121573,17 +140704,36 @@ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *p ** Return the index of a column in a table. Return -1 if the column ** is not contained in the table. */ -static int columnIndex(Table *pTab, const char *zCol){ +SQLITE_PRIVATE int sqlite3ColumnIndex(Table *pTab, const char *zCol){ int i; - for(i=0; inCol; i++){ - if( sqlite3StrICmp(pTab->aCol[i].zName, zCol)==0 ) return i; + u8 h = sqlite3StrIHash(zCol); + Column *pCol; + for(pCol=pTab->aCol, i=0; inCol; pCol++, i++){ + if( pCol->hName==h && sqlite3StrICmp(pCol->zCnName, zCol)==0 ) return i; } return -1; } /* -** Search the first N tables in pSrc, from left to right, looking for a -** table that has a column named zCol. +** Mark a subquery result column as having been used. +*/ +SQLITE_PRIVATE void sqlite3SrcItemColumnUsed(SrcItem *pItem, int iCol){ + assert( pItem!=0 ); + assert( (int)pItem->fg.isNestedFrom == IsNestedFrom(pItem->pSelect) ); + if( pItem->fg.isNestedFrom ){ + ExprList *pResults; + assert( pItem->pSelect!=0 ); + pResults = pItem->pSelect->pEList; + assert( pResults!=0 ); + assert( iCol>=0 && iColnExpr ); + pResults->a[iCol].fg.bUsed = 1; + } +} + +/* +** Search the tables iStart..iEnd (inclusive) in pSrc, looking for a +** table that has a column named zCol. The search is left-to-right. +** The first match found is returned. ** ** When found, set *piTab and *piCol to the table index and column index ** of the matching column and return TRUE. @@ -121592,19 +140742,27 @@ static int columnIndex(Table *pTab, const char *zCol){ */ static int tableAndColumnIndex( SrcList *pSrc, /* Array of tables to search */ - int N, /* Number of tables in pSrc->a[] to search */ + int iStart, /* First member of pSrc->a[] to check */ + int iEnd, /* Last member of pSrc->a[] to check */ const char *zCol, /* Name of the column we are looking for */ int *piTab, /* Write index of pSrc->a[] here */ - int *piCol /* Write index of pSrc->a[*piTab].pTab->aCol[] here */ + int *piCol, /* Write index of pSrc->a[*piTab].pTab->aCol[] here */ + int bIgnoreHidden /* Ignore hidden columns */ ){ int i; /* For looping over tables in pSrc */ int iCol; /* Index of column matching zCol */ + assert( iEndnSrc ); + assert( iStart>=0 ); assert( (piTab==0)==(piCol==0) ); /* Both or neither are NULL */ - for(i=0; ia[i].pTab, zCol); - if( iCol>=0 ){ + + for(i=iStart; i<=iEnd; i++){ + iCol = sqlite3ColumnIndex(pSrc->a[i].pTab, zCol); + if( iCol>=0 + && (bIgnoreHidden==0 || IsHiddenColumn(&pSrc->a[i].pTab->aCol[iCol])==0) + ){ if( piTab ){ + sqlite3SrcItemColumnUsed(&pSrc->a[i], iCol); *piTab = i; *piCol = iCol; } @@ -121615,63 +140773,19 @@ static int tableAndColumnIndex( } /* -** This function is used to add terms implied by JOIN syntax to the -** WHERE clause expression of a SELECT statement. The new term, which -** is ANDed with the existing WHERE clause, is of the form: -** -** (tab1.col1 = tab2.col2) -** -** where tab1 is the iSrc'th table in SrcList pSrc and tab2 is the -** (iSrc+1)'th. Column col1 is column iColLeft of tab1, and col2 is -** column iColRight of tab2. -*/ -static void addWhereTerm( - Parse *pParse, /* Parsing context */ - SrcList *pSrc, /* List of tables in FROM clause */ - int iLeft, /* Index of first table to join in pSrc */ - int iColLeft, /* Index of column in first table */ - int iRight, /* Index of second table in pSrc */ - int iColRight, /* Index of column in second table */ - int isOuterJoin, /* True if this is an OUTER join */ - Expr **ppWhere /* IN/OUT: The WHERE clause to add to */ -){ - sqlite3 *db = pParse->db; - Expr *pE1; - Expr *pE2; - Expr *pEq; - - assert( iLeftnSrc>iRight ); - assert( pSrc->a[iLeft].pTab ); - assert( pSrc->a[iRight].pTab ); - - pE1 = sqlite3CreateColumnExpr(db, pSrc, iLeft, iColLeft); - pE2 = sqlite3CreateColumnExpr(db, pSrc, iRight, iColRight); - - pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2); - if( pEq && isOuterJoin ){ - ExprSetProperty(pEq, EP_FromJoin); - assert( !ExprHasProperty(pEq, EP_TokenOnly|EP_Reduced) ); - ExprSetVVAProperty(pEq, EP_NoReduce); - pEq->iRightJoinTable = (i16)pE2->iTable; - } - *ppWhere = sqlite3ExprAnd(db, *ppWhere, pEq); -} - -/* -** Set the EP_FromJoin property on all terms of the given expression. -** And set the Expr.iRightJoinTable to iTable for every term in the +** Set the EP_OuterON property on all terms of the given expression. +** And set the Expr.w.iJoin to iTable for every term in the ** expression. ** -** The EP_FromJoin property is used on terms of an expression to tell -** the LEFT OUTER JOIN processing logic that this term is part of the +** The EP_OuterON property is used on terms of an expression to tell +** the OUTER JOIN processing logic that this term is part of the ** join restriction specified in the ON or USING clause and not a part ** of the more general WHERE clause. These terms are moved over to the ** WHERE clause during join processing but we need to remember that they ** originated in the ON or USING clause. ** -** The Expr.iRightJoinTable tells the WHERE clause processing that the -** expression depends on table iRightJoinTable even if that table is not +** The Expr.w.iJoin tells the WHERE clause processing that the +** expression depends on table w.iJoin even if that table is not ** explicitly mentioned in the expression. That information is needed ** for cases like this: ** @@ -121684,155 +140798,226 @@ static void addWhereTerm( ** after the t1 loop and rows with t1.x!=5 will never appear in ** the output, which is incorrect. */ -static void setJoinExpr(Expr *p, int iTable){ +SQLITE_PRIVATE void sqlite3SetJoinExpr(Expr *p, int iTable, u32 joinFlag){ + assert( joinFlag==EP_OuterON || joinFlag==EP_InnerON ); while( p ){ - ExprSetProperty(p, EP_FromJoin); + ExprSetProperty(p, joinFlag); assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) ); ExprSetVVAProperty(p, EP_NoReduce); - p->iRightJoinTable = (i16)iTable; - if( p->op==TK_FUNCTION && p->x.pList ){ - int i; - for(i=0; ix.pList->nExpr; i++){ - setJoinExpr(p->x.pList->a[i].pExpr, iTable); + p->w.iJoin = iTable; + if( p->op==TK_FUNCTION ){ + assert( ExprUseXList(p) ); + if( p->x.pList ){ + int i; + for(i=0; ix.pList->nExpr; i++){ + sqlite3SetJoinExpr(p->x.pList->a[i].pExpr, iTable, joinFlag); + } } } - setJoinExpr(p->pLeft, iTable); + sqlite3SetJoinExpr(p->pLeft, iTable, joinFlag); p = p->pRight; - } + } } -/* Undo the work of setJoinExpr(). In the expression tree p, convert every -** term that is marked with EP_FromJoin and iRightJoinTable==iTable into -** an ordinary term that omits the EP_FromJoin mark. +/* Undo the work of sqlite3SetJoinExpr(). This is used when a LEFT JOIN +** is simplified into an ordinary JOIN, and when an ON expression is +** "pushed down" into the WHERE clause of a subquery. ** -** This happens when a LEFT JOIN is simplified into an ordinary JOIN. +** Convert every term that is marked with EP_OuterON and w.iJoin==iTable into +** an ordinary term that omits the EP_OuterON mark. Or if iTable<0, then +** just clear every EP_OuterON and EP_InnerON mark from the expression tree. +** +** If nullable is true, that means that Expr p might evaluate to NULL even +** if it is a reference to a NOT NULL column. This can happen, for example, +** if the table that p references is on the left side of a RIGHT JOIN. +** If nullable is true, then take care to not remove the EP_CanBeNull bit. +** See forum thread https://sqlite.org/forum/forumpost/b40696f50145d21c */ -static void unsetJoinExpr(Expr *p, int iTable){ +static void unsetJoinExpr(Expr *p, int iTable, int nullable){ while( p ){ - if( ExprHasProperty(p, EP_FromJoin) - && (iTable<0 || p->iRightJoinTable==iTable) ){ - ExprClearProperty(p, EP_FromJoin); + if( iTable<0 || (ExprHasProperty(p, EP_OuterON) && p->w.iJoin==iTable) ){ + ExprClearProperty(p, EP_OuterON|EP_InnerON); + if( iTable>=0 ) ExprSetProperty(p, EP_InnerON); } - if( p->op==TK_FUNCTION && p->x.pList ){ - int i; - for(i=0; ix.pList->nExpr; i++){ - unsetJoinExpr(p->x.pList->a[i].pExpr, iTable); + if( p->op==TK_COLUMN && p->iTable==iTable && !nullable ){ + ExprClearProperty(p, EP_CanBeNull); + } + if( p->op==TK_FUNCTION ){ + assert( ExprUseXList(p) ); + if( p->x.pList ){ + int i; + for(i=0; ix.pList->nExpr; i++){ + unsetJoinExpr(p->x.pList->a[i].pExpr, iTable, nullable); + } } } - unsetJoinExpr(p->pLeft, iTable); + unsetJoinExpr(p->pLeft, iTable, nullable); p = p->pRight; - } + } } /* ** This routine processes the join information for a SELECT statement. -** ON and USING clauses are converted into extra terms of the WHERE clause. -** NATURAL joins also create extra WHERE clause terms. +** +** * A NATURAL join is converted into a USING join. After that, we +** do not need to be concerned with NATURAL joins and we only have +** think about USING joins. +** +** * ON and USING clauses result in extra terms being added to the +** WHERE clause to enforce the specified constraints. The extra +** WHERE clause terms will be tagged with EP_OuterON or +** EP_InnerON so that we know that they originated in ON/USING. ** ** The terms of a FROM clause are contained in the Select.pSrc structure. ** The left most table is the first entry in Select.pSrc. The right-most ** table is the last entry. The join operator is held in the entry to -** the left. Thus entry 0 contains the join operator for the join between +** the right. Thus entry 1 contains the join operator for the join between ** entries 0 and 1. Any ON or USING clauses associated with the join are -** also attached to the left entry. +** also attached to the right entry. ** ** This routine returns the number of errors encountered. */ -static int sqliteProcessJoin(Parse *pParse, Select *p){ +static int sqlite3ProcessJoin(Parse *pParse, Select *p){ SrcList *pSrc; /* All tables in the FROM clause */ int i, j; /* Loop counters */ - struct SrcList_item *pLeft; /* Left table being joined */ - struct SrcList_item *pRight; /* Right table being joined */ + SrcItem *pLeft; /* Left table being joined */ + SrcItem *pRight; /* Right table being joined */ pSrc = p->pSrc; pLeft = &pSrc->a[0]; pRight = &pLeft[1]; for(i=0; inSrc-1; i++, pRight++, pLeft++){ Table *pRightTab = pRight->pTab; - int isOuter; + u32 joinType; if( NEVER(pLeft->pTab==0 || pRightTab==0) ) continue; - isOuter = (pRight->fg.jointype & JT_OUTER)!=0; + joinType = (pRight->fg.jointype & JT_OUTER)!=0 ? EP_OuterON : EP_InnerON; - /* When the NATURAL keyword is present, add WHERE clause terms for - ** every column that the two tables have in common. + /* If this is a NATURAL join, synthesize an appropriate USING clause + ** to specify which columns should be joined. */ if( pRight->fg.jointype & JT_NATURAL ){ - if( pRight->pOn || pRight->pUsing ){ + IdList *pUsing = 0; + if( pRight->fg.isUsing || pRight->u3.pOn ){ sqlite3ErrorMsg(pParse, "a NATURAL join may not have " "an ON or USING clause", 0); return 1; } for(j=0; jnCol; j++){ char *zName; /* Name of column in the right table */ - int iLeft; /* Matching left table */ - int iLeftCol; /* Matching column in the left table */ - zName = pRightTab->aCol[j].zName; - if( tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol) ){ - addWhereTerm(pParse, pSrc, iLeft, iLeftCol, i+1, j, - isOuter, &p->pWhere); + if( IsHiddenColumn(&pRightTab->aCol[j]) ) continue; + zName = pRightTab->aCol[j].zCnName; + if( tableAndColumnIndex(pSrc, 0, i, zName, 0, 0, 1) ){ + pUsing = sqlite3IdListAppend(pParse, pUsing, 0); + if( pUsing ){ + assert( pUsing->nId>0 ); + assert( pUsing->a[pUsing->nId-1].zName==0 ); + pUsing->a[pUsing->nId-1].zName = sqlite3DbStrDup(pParse->db, zName); + } } } - } - - /* Disallow both ON and USING clauses in the same join - */ - if( pRight->pOn && pRight->pUsing ){ - sqlite3ErrorMsg(pParse, "cannot have both ON and USING " - "clauses in the same join"); - return 1; - } - - /* Add the ON clause to the end of the WHERE clause, connected by - ** an AND operator. - */ - if( pRight->pOn ){ - if( isOuter ) setJoinExpr(pRight->pOn, pRight->iCursor); - p->pWhere = sqlite3ExprAnd(pParse->db, p->pWhere, pRight->pOn); - pRight->pOn = 0; + if( pUsing ){ + pRight->fg.isUsing = 1; + pRight->fg.isSynthUsing = 1; + pRight->u3.pUsing = pUsing; + } + if( pParse->nErr ) return 1; } /* Create extra terms on the WHERE clause for each column named - ** in the USING clause. Example: If the two tables to be joined are + ** in the USING clause. Example: If the two tables to be joined are ** A and B and the USING clause names X, Y, and Z, then add this ** to the WHERE clause: A.X=B.X AND A.Y=B.Y AND A.Z=B.Z ** Report an error if any column mentioned in the USING clause is ** not contained in both tables to be joined. */ - if( pRight->pUsing ){ - IdList *pList = pRight->pUsing; + if( pRight->fg.isUsing ){ + IdList *pList = pRight->u3.pUsing; + sqlite3 *db = pParse->db; + assert( pList!=0 ); for(j=0; jnId; j++){ char *zName; /* Name of the term in the USING clause */ int iLeft; /* Table on the left with matching column name */ int iLeftCol; /* Column number of matching column on the left */ int iRightCol; /* Column number of matching column on the right */ + Expr *pE1; /* Reference to the column on the LEFT of the join */ + Expr *pE2; /* Reference to the column on the RIGHT of the join */ + Expr *pEq; /* Equality constraint. pE1 == pE2 */ zName = pList->a[j].zName; - iRightCol = columnIndex(pRightTab, zName); + iRightCol = sqlite3ColumnIndex(pRightTab, zName); if( iRightCol<0 - || !tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol) + || tableAndColumnIndex(pSrc, 0, i, zName, &iLeft, &iLeftCol, + pRight->fg.isSynthUsing)==0 ){ sqlite3ErrorMsg(pParse, "cannot join using column %s - column " "not present in both tables", zName); return 1; } - addWhereTerm(pParse, pSrc, iLeft, iLeftCol, i+1, iRightCol, - isOuter, &p->pWhere); + pE1 = sqlite3CreateColumnExpr(db, pSrc, iLeft, iLeftCol); + sqlite3SrcItemColumnUsed(&pSrc->a[iLeft], iLeftCol); + if( (pSrc->a[0].fg.jointype & JT_LTORJ)!=0 ){ + /* This branch runs if the query contains one or more RIGHT or FULL + ** JOINs. If only a single table on the left side of this join + ** contains the zName column, then this branch is a no-op. + ** But if there are two or more tables on the left side + ** of the join, construct a coalesce() function that gathers all + ** such tables. Raise an error if more than one of those references + ** to zName is not also within a prior USING clause. + ** + ** We really ought to raise an error if there are two or more + ** non-USING references to zName on the left of an INNER or LEFT + ** JOIN. But older versions of SQLite do not do that, so we avoid + ** adding a new error so as to not break legacy applications. + */ + ExprList *pFuncArgs = 0; /* Arguments to the coalesce() */ + static const Token tkCoalesce = { "coalesce", 8 }; + while( tableAndColumnIndex(pSrc, iLeft+1, i, zName, &iLeft, &iLeftCol, + pRight->fg.isSynthUsing)!=0 ){ + if( pSrc->a[iLeft].fg.isUsing==0 + || sqlite3IdListIndex(pSrc->a[iLeft].u3.pUsing, zName)<0 + ){ + sqlite3ErrorMsg(pParse, "ambiguous reference to %s in USING()", + zName); + break; + } + pFuncArgs = sqlite3ExprListAppend(pParse, pFuncArgs, pE1); + pE1 = sqlite3CreateColumnExpr(db, pSrc, iLeft, iLeftCol); + sqlite3SrcItemColumnUsed(&pSrc->a[iLeft], iLeftCol); + } + if( pFuncArgs ){ + pFuncArgs = sqlite3ExprListAppend(pParse, pFuncArgs, pE1); + pE1 = sqlite3ExprFunction(pParse, pFuncArgs, &tkCoalesce, 0); + } + } + pE2 = sqlite3CreateColumnExpr(db, pSrc, i+1, iRightCol); + sqlite3SrcItemColumnUsed(pRight, iRightCol); + pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2); + assert( pE2!=0 || pEq==0 ); + if( pEq ){ + ExprSetProperty(pEq, joinType); + assert( !ExprHasProperty(pEq, EP_TokenOnly|EP_Reduced) ); + ExprSetVVAProperty(pEq, EP_NoReduce); + pEq->w.iJoin = pE2->iTable; + } + p->pWhere = sqlite3ExprAnd(pParse, p->pWhere, pEq); } } + + /* Add the ON clause to the end of the WHERE clause, connected by + ** an AND operator. + */ + else if( pRight->u3.pOn ){ + sqlite3SetJoinExpr(pRight->u3.pOn, pRight->iCursor, joinType); + p->pWhere = sqlite3ExprAnd(pParse, p->pWhere, pRight->u3.pOn); + pRight->u3.pOn = 0; + pRight->fg.isOn = 1; + } } return 0; } -/* Forward reference */ -static KeyInfo *keyInfoFromExprList( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* Form the KeyInfo object from this ExprList */ - int iStart, /* Begin with this column of pList */ - int nExtra /* Add this many extra columns to the end */ -); - /* ** An instance of this object holds information (beyond pParse and pSelect) ** needed to load the next result row that is to be added to the sorter. @@ -121922,14 +141107,18 @@ static void pushOntoSorter( ** (2) All output columns are included in the sort record. In that ** case regData==regOrigData. ** (3) Some output columns are omitted from the sort record due to - ** the SQLITE_ENABLE_SORTER_REFERENCE optimization, or due to the - ** SQLITE_ECEL_OMITREF optimization, or due to the - ** SortCtx.pDeferredRowLoad optimiation. In any of these cases + ** the SQLITE_ENABLE_SORTER_REFERENCES optimization, or due to the + ** SQLITE_ECEL_OMITREF optimization, or due to the + ** SortCtx.pDeferredRowLoad optimization. In any of these cases ** regOrigData is 0 to prevent this routine from trying to copy ** values that might not yet exist. */ assert( nData==1 || regData==regOrigData || regOrigData==0 ); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + pSort->addrPush = sqlite3VdbeCurrentAddr(v); +#endif + if( nPrefixReg ){ assert( nPrefixReg==nExpr+bSeq ); regBase = regData - nPrefixReg; @@ -121939,7 +141128,7 @@ static void pushOntoSorter( } assert( pSelect->iOffset==0 || pSelect->iLimit!=0 ); iLimit = pSelect->iOffset ? pSelect->iOffset+1 : pSelect->iLimit; - pSort->labelDone = sqlite3VdbeMakeLabel(v); + pSort->labelDone = sqlite3VdbeMakeLabel(pParse); sqlite3ExprCodeExprList(pParse, pSort->pOrderBy, regBase, regOrigData, SQLITE_ECEL_DUP | (regOrigData? SQLITE_ECEL_REF : 0)); if( bSeq ){ @@ -121961,7 +141150,7 @@ static void pushOntoSorter( pParse->nMem += pSort->nOBSat; nKey = nExpr - pSort->nOBSat + bSeq; if( bSeq ){ - addrFirst = sqlite3VdbeAddOp1(v, OP_IfNot, regBase+nExpr); + addrFirst = sqlite3VdbeAddOp1(v, OP_IfNot, regBase+nExpr); }else{ addrFirst = sqlite3VdbeAddOp1(v, OP_SequenceTest, pSort->iECursor); } @@ -121971,14 +141160,15 @@ static void pushOntoSorter( if( pParse->db->mallocFailed ) return; pOp->p2 = nKey + nData; pKI = pOp->p4.pKeyInfo; - memset(pKI->aSortOrder, 0, pKI->nKeyField); /* Makes OP_Jump testable */ + memset(pKI->aSortFlags, 0, pKI->nKeyField); /* Makes OP_Jump testable */ sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO); testcase( pKI->nAllField > pKI->nKeyField+2 ); - pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat, + pOp->p4.pKeyInfo = sqlite3KeyInfoFromExprList(pParse,pSort->pOrderBy,nOBSat, pKI->nAllField-pKI->nKeyField-1); + pOp = 0; /* Ensure pOp not used after sqlite3VdbeAddOp3() */ addrJmp = sqlite3VdbeCurrentAddr(v); sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v); - pSort->labelBkOut = sqlite3VdbeMakeLabel(v); + pSort->labelBkOut = sqlite3VdbeMakeLabel(pParse); pSort->regReturn = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut); sqlite3VdbeAddOp1(v, OP_ResetSorter, pSort->iECursor); @@ -121994,17 +141184,17 @@ static void pushOntoSorter( /* At this point the values for the new sorter entry are stored ** in an array of registers. They need to be composed into a record ** and inserted into the sorter if either (a) there are currently - ** less than LIMIT+OFFSET items or (b) the new record is smaller than + ** less than LIMIT+OFFSET items or (b) the new record is smaller than ** the largest record currently in the sorter. If (b) is true and there ** are already LIMIT+OFFSET items in the sorter, delete the largest - ** entry before inserting the new one. This way there are never more + ** entry before inserting the new one. This way there are never more ** than LIMIT+OFFSET items in the sorter. ** ** If the new record does not need to be inserted into the sorter, - ** jump to the next iteration of the loop. Or, if the - ** pSort->bOrderedInnerLoop flag is set to indicate that the inner - ** loop delivers items in sorted order, jump to the next iteration - ** of the outer loop. + ** jump to the next iteration of the loop. If the pSort->labelOBLopt + ** value is not zero, then it is a label of where to jump. Otherwise, + ** just bypass the row insert logic. See the header comment on the + ** sqlite3WhereOrderByLimitOptLabel() function for additional info. */ int iCsr = pSort->iECursor; sqlite3VdbeAddOp2(v, OP_IfNotZero, iLimit, sqlite3VdbeCurrentAddr(v)+4); @@ -122026,10 +141216,12 @@ static void pushOntoSorter( sqlite3VdbeAddOp4Int(v, op, pSort->iECursor, regRecord, regBase+nOBSat, nBase-nOBSat); if( iSkip ){ - assert( pSort->bOrderedInnerLoop==0 || pSort->bOrderedInnerLoop==1 ); sqlite3VdbeChangeP2(v, iSkip, - sqlite3VdbeCurrentAddr(v) + pSort->bOrderedInnerLoop); + pSort->labelOBLopt ? pSort->labelOBLopt : sqlite3VdbeCurrentAddr(v)); } +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + pSort->addrPushEnd = sqlite3VdbeCurrentAddr(v)-1; +#endif } /* @@ -122047,38 +141239,164 @@ static void codeOffset( } /* -** Add code that will check to make sure the N registers starting at iMem -** form a distinct entry. iTab is a sorting index that holds previously -** seen combinations of the N values. A new entry is made in iTab -** if the current N values are new. +** Add code that will check to make sure the array of registers starting at +** iMem form a distinct entry. This is used by both "SELECT DISTINCT ..." and +** distinct aggregates ("SELECT count(DISTINCT ) ..."). Three strategies +** are available. Which is used depends on the value of parameter eTnctType, +** as follows: ** -** A jump to addrRepeat is made and the N+1 values are popped from the -** stack if the top N elements are not distinct. +** WHERE_DISTINCT_UNORDERED/WHERE_DISTINCT_NOOP: +** Build an ephemeral table that contains all entries seen before and +** skip entries which have been seen before. +** +** Parameter iTab is the cursor number of an ephemeral table that must +** be opened before the VM code generated by this routine is executed. +** The ephemeral cursor table is queried for a record identical to the +** record formed by the current array of registers. If one is found, +** jump to VM address addrRepeat. Otherwise, insert a new record into +** the ephemeral cursor and proceed. +** +** The returned value in this case is a copy of parameter iTab. +** +** WHERE_DISTINCT_ORDERED: +** In this case rows are being delivered sorted order. The ephemeral +** table is not required. Instead, the current set of values +** is compared against previous row. If they match, the new row +** is not distinct and control jumps to VM address addrRepeat. Otherwise, +** the VM program proceeds with processing the new row. +** +** The returned value in this case is the register number of the first +** in an array of registers used to store the previous result row so that +** it can be compared to the next. The caller must ensure that this +** register is initialized to NULL. (The fixDistinctOpenEph() routine +** will take care of this initialization.) +** +** WHERE_DISTINCT_UNIQUE: +** In this case it has already been determined that the rows are distinct. +** No special action is required. The return value is zero. +** +** Parameter pEList is the list of expressions used to generated the +** contents of each row. It is used by this routine to determine (a) +** how many elements there are in the array of registers and (b) the +** collation sequences that should be used for the comparisons if +** eTnctType is WHERE_DISTINCT_ORDERED. */ -static void codeDistinct( +static int codeDistinct( Parse *pParse, /* Parsing and code generating context */ + int eTnctType, /* WHERE_DISTINCT_* value */ int iTab, /* A sorting index used to test for distinctness */ int addrRepeat, /* Jump to here if not distinct */ - int N, /* Number of elements */ - int iMem /* First element */ + ExprList *pEList, /* Expression for each element */ + int regElem /* First element */ ){ - Vdbe *v; - int r1; + int iRet = 0; + int nResultCol = pEList->nExpr; + Vdbe *v = pParse->pVdbe; - v = pParse->pVdbe; - r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, iMem, N); VdbeCoverage(v); - sqlite3VdbeAddOp3(v, OP_MakeRecord, iMem, N, r1); - sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r1, iMem, N); - sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); - sqlite3ReleaseTempReg(pParse, r1); + switch( eTnctType ){ + case WHERE_DISTINCT_ORDERED: { + int i; + int iJump; /* Jump destination */ + int regPrev; /* Previous row content */ + + /* Allocate space for the previous row */ + iRet = regPrev = pParse->nMem+1; + pParse->nMem += nResultCol; + + iJump = sqlite3VdbeCurrentAddr(v) + nResultCol; + for(i=0; ia[i].pExpr); + if( idb->mallocFailed ); + sqlite3VdbeAddOp3(v, OP_Copy, regElem, regPrev, nResultCol-1); + break; + } + + case WHERE_DISTINCT_UNIQUE: { + /* nothing to do */ + break; + } + + default: { + int r1 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, regElem, nResultCol); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regElem, nResultCol, r1); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r1, regElem, nResultCol); + sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); + sqlite3ReleaseTempReg(pParse, r1); + iRet = iTab; + break; + } + } + + return iRet; +} + +/* +** This routine runs after codeDistinct(). It makes necessary +** adjustments to the OP_OpenEphemeral opcode that the codeDistinct() +** routine made use of. This processing must be done separately since +** sometimes codeDistinct is called before the OP_OpenEphemeral is actually +** laid down. +** +** WHERE_DISTINCT_NOOP: +** WHERE_DISTINCT_UNORDERED: +** +** No adjustments necessary. This function is a no-op. +** +** WHERE_DISTINCT_UNIQUE: +** +** The ephemeral table is not needed. So change the +** OP_OpenEphemeral opcode into an OP_Noop. +** +** WHERE_DISTINCT_ORDERED: +** +** The ephemeral table is not needed. But we do need register +** iVal to be initialized to NULL. So change the OP_OpenEphemeral +** into an OP_Null on the iVal register. +*/ +static void fixDistinctOpenEph( + Parse *pParse, /* Parsing and code generating context */ + int eTnctType, /* WHERE_DISTINCT_* value */ + int iVal, /* Value returned by codeDistinct() */ + int iOpenEphAddr /* Address of OP_OpenEphemeral instruction for iTab */ +){ + if( pParse->nErr==0 + && (eTnctType==WHERE_DISTINCT_UNIQUE || eTnctType==WHERE_DISTINCT_ORDERED) + ){ + Vdbe *v = pParse->pVdbe; + sqlite3VdbeChangeToNoop(v, iOpenEphAddr); + if( sqlite3VdbeGetOp(v, iOpenEphAddr+1)->opcode==OP_Explain ){ + sqlite3VdbeChangeToNoop(v, iOpenEphAddr+1); + } + if( eTnctType==WHERE_DISTINCT_ORDERED ){ + /* Change the OP_OpenEphemeral to an OP_Null that sets the MEM_Cleared + ** bit on the first register of the previous value. This will cause the + ** OP_Ne added in codeDistinct() to always fail on the first iteration of + ** the loop even if the first row is all NULLs. */ + VdbeOp *pOp = sqlite3VdbeGetOp(v, iOpenEphAddr); + pOp->opcode = OP_Null; + pOp->p1 = 1; + pOp->p2 = iVal; + } + } } #ifdef SQLITE_ENABLE_SORTER_REFERENCES /* ** This function is called as part of inner-loop generation for a SELECT -** statement with an ORDER BY that is not optimized by an index. It -** determines the expressions, if any, that the sorter-reference +** statement with an ORDER BY that is not optimized by an index. It +** determines the expressions, if any, that the sorter-reference ** optimization should be used for. The sorter-reference optimization ** is used for SELECT queries like: ** @@ -122088,11 +141406,11 @@ static void codeDistinct( ** storing values read from that column in the sorter records, the PK of ** the row from table t1 is stored instead. Then, as records are extracted from ** the sorter to return to the user, the required value of bigblob is -** retrieved directly from table t1. If the values are very large, this +** retrieved directly from table t1. If the values are very large, this ** can be more efficient than storing them directly in the sorter records. ** -** The ExprList_item.bSorterRef flag is set for each expression in pEList -** for which the sorter-reference optimization should be enabled. +** The ExprList_item.fg.bSorterRef flag is set for each expression in pEList +** for which the sorter-reference optimization should be enabled. ** Additionally, the pSort->aDefer[] array is populated with entries ** for all cursors required to evaluate all selected expressions. Finally. ** output variable (*ppExtra) is set to an expression list containing @@ -122112,9 +141430,13 @@ static void selectExprDefer( struct ExprList_item *pItem = &pEList->a[i]; if( pItem->u.x.iOrderByCol==0 ){ Expr *pExpr = pItem->pExpr; - Table *pTab = pExpr->pTab; - if( pExpr->op==TK_COLUMN && pExpr->iColumn>=0 && pTab && !IsVirtual(pTab) - && (pTab->aCol[pExpr->iColumn].colFlags & COLFLAG_SORTERREF) + Table *pTab; + if( pExpr->op==TK_COLUMN + && pExpr->iColumn>=0 + && ALWAYS( ExprUseYTab(pExpr) ) + && (pTab = pExpr->y.pTab)!=0 + && IsOrdinaryTable(pTab) + && (pTab->aCol[pExpr->iColumn].colFlags & COLFLAG_SORTERREF)!=0 ){ int j; for(j=0; jiTable = pExpr->iTable; - pNew->pTab = pExpr->pTab; + assert( ExprUseYTab(pNew) ); + pNew->y.pTab = pExpr->y.pTab; pNew->iColumn = pPk ? pPk->aiColumn[k] : -1; pExtra = sqlite3ExprListAppend(pParse, pExtra, pNew); } } - pSort->aDefer[nDefer].pTab = pExpr->pTab; + pSort->aDefer[nDefer].pTab = pExpr->y.pTab; pSort->aDefer[nDefer].iCsr = pExpr->iTable; pSort->aDefer[nDefer].nKey = nKey; nDefer++; } } - pItem->bSorterRef = 1; + pItem->fg.bSorterRef = 1; } } } @@ -122161,7 +141484,7 @@ static void selectExprDefer( ** ** If srcTab is negative, then the p->pEList expressions ** are evaluated in order to get the data for this row. If srcTab is -** zero or more, then data is pulled from srcTab and p->pEList is used only +** zero or more, then data is pulled from srcTab and p->pEList is used only ** to get the number of columns and the collation sequence for each column. */ static void selectInnerLoop( @@ -122225,7 +141548,7 @@ static void selectInnerLoop( if( srcTab>=0 ){ for(i=0; ipEList->a[i].zName)); + VdbeComment((v, "%s", p->pEList->a[i].zEName)); } }else if( eDest!=SRT_Exists ){ #ifdef SQLITE_ENABLE_SORTER_REFERENCES @@ -122243,8 +141566,8 @@ static void selectInnerLoop( } if( pSort && hasDistinct==0 && eDest!=SRT_EphemTab && eDest!=SRT_Table ){ /* For each expression in p->pEList that is a copy of an expression in - ** the ORDER BY clause (pSort->pOrderBy), set the associated - ** iOrderByCol value to one more than the index of the ORDER BY + ** the ORDER BY clause (pSort->pOrderBy), set the associated + ** iOrderByCol value to one more than the index of the ORDER BY ** expression within the sort-key that pushOntoSorter() will generate. ** This allows the p->pEList field to be omitted from the sorted record, ** saving space and CPU cycles. */ @@ -122260,7 +141583,7 @@ static void selectInnerLoop( selectExprDefer(pParse, pSort, p->pEList, &pExtra); if( pExtra && pParse->db->mallocFailed==0 ){ /* If there are any extra PK columns to add to the sorter records, - ** allocate extra memory cells and adjust the OpenEphemeral + ** allocate extra memory cells and adjust the OpenEphemeral ** instruction to account for the larger records. This is only ** required if there are one or more WITHOUT ROWID tables with ** composite primary keys in the SortCtx.aDefer[] array. */ @@ -122277,7 +141600,7 @@ static void selectInnerLoop( for(i=0; inExpr; i++){ if( pEList->a[i].u.x.iOrderByCol>0 #ifdef SQLITE_ENABLE_SORTER_REFERENCES - || pEList->a[i].bSorterRef + || pEList->a[i].fg.bSorterRef #endif ){ nResultCol--; @@ -122290,8 +141613,9 @@ static void selectInnerLoop( testcase( eDest==SRT_Mem ); testcase( eDest==SRT_Coroutine ); testcase( eDest==SRT_Output ); - assert( eDest==SRT_Set || eDest==SRT_Mem - || eDest==SRT_Coroutine || eDest==SRT_Output ); + assert( eDest==SRT_Set || eDest==SRT_Mem + || eDest==SRT_Coroutine || eDest==SRT_Output + || eDest==SRT_Upfrom ); } sRowLoadInfo.regResult = regResult; sRowLoadInfo.ecelFlags = ecelFlags; @@ -122301,7 +141625,7 @@ static void selectInnerLoop( if( pExtra ) nResultCol += pExtra->nExpr; #endif if( p->iLimit - && (ecelFlags & SQLITE_ECEL_OMITREF)!=0 + && (ecelFlags & SQLITE_ECEL_OMITREF)!=0 && nPrefixReg>0 ){ assert( pSort!=0 ); @@ -122318,58 +141642,11 @@ static void selectInnerLoop( ** part of the result. */ if( hasDistinct ){ - switch( pDistinct->eTnctType ){ - case WHERE_DISTINCT_ORDERED: { - VdbeOp *pOp; /* No longer required OpenEphemeral instr. */ - int iJump; /* Jump destination */ - int regPrev; /* Previous row content */ - - /* Allocate space for the previous row */ - regPrev = pParse->nMem+1; - pParse->nMem += nResultCol; - - /* Change the OP_OpenEphemeral coded earlier to an OP_Null - ** sets the MEM_Cleared bit on the first register of the - ** previous value. This will cause the OP_Ne below to always - ** fail on the first iteration of the loop even if the first - ** row is all NULLs. - */ - sqlite3VdbeChangeToNoop(v, pDistinct->addrTnct); - pOp = sqlite3VdbeGetOp(v, pDistinct->addrTnct); - pOp->opcode = OP_Null; - pOp->p1 = 1; - pOp->p2 = regPrev; - - iJump = sqlite3VdbeCurrentAddr(v) + nResultCol; - for(i=0; ipEList->a[i].pExpr); - if( idb->mallocFailed ); - sqlite3VdbeAddOp3(v, OP_Copy, regResult, regPrev, nResultCol-1); - break; - } - - case WHERE_DISTINCT_UNIQUE: { - sqlite3VdbeChangeToNoop(v, pDistinct->addrTnct); - break; - } - - default: { - assert( pDistinct->eTnctType==WHERE_DISTINCT_UNORDERED ); - codeDistinct(pParse, pDistinct->tabTnct, iContinue, nResultCol, - regResult); - break; - } - } + int eType = pDistinct->eTnctType; + int iTab = pDistinct->tabTnct; + assert( nResultCol==p->pEList->nExpr ); + iTab = codeDistinct(pParse, eType, iTab, iContinue, p->pEList, regResult); + fixDistinctOpenEph(pParse, eType, iTab, pDistinct->addrTnct); if( pSort==0 ){ codeOffset(v, p->iOffset, iContinue); } @@ -122411,6 +141688,16 @@ static void selectInnerLoop( testcase( eDest==SRT_Fifo ); testcase( eDest==SRT_DistFifo ); sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r1+nPrefixReg); +#if !defined(SQLITE_ENABLE_NULL_TRIM) && defined(SQLITE_DEBUG) + /* A destination of SRT_Table and a non-zero iSDParm2 parameter means + ** that this is an "UPDATE ... FROM" on a virtual table or view. In this + ** case set the p5 parameter of the OP_MakeRecord to OPFLAG_NOCHNG_MAGIC. + ** This does not affect operation in any way - it just allows MakeRecord + ** to process OPFLAG_NOCHANGE values without an assert() failing. */ + if( eDest==SRT_Table && pDest->iSDParm2 ){ + sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC); + } +#endif #ifndef SQLITE_OMIT_CTE if( eDest==SRT_DistFifo ){ /* If the destination is DistFifo, then cursor (iParm+1) is open @@ -122439,6 +141726,30 @@ static void selectInnerLoop( break; } + case SRT_Upfrom: { + if( pSort ){ + pushOntoSorter( + pParse, pSort, p, regResult, regOrig, nResultCol, nPrefixReg); + }else{ + int i2 = pDest->iSDParm2; + int r1 = sqlite3GetTempReg(pParse); + + /* If the UPDATE FROM join is an aggregate that matches no rows, it + ** might still be trying to return one row, because that is what + ** aggregates do. Don't record that empty row in the output table. */ + sqlite3VdbeAddOp2(v, OP_IsNull, regResult, iBreak); VdbeCoverage(v); + + sqlite3VdbeAddOp3(v, OP_MakeRecord, + regResult+(i2<0), nResultCol-(i2<0), r1); + if( i2<0 ){ + sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, regResult); + }else{ + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regResult, i2); + } + } + break; + } + #ifndef SQLITE_OMIT_SUBQUERY /* If we are creating a set for an "expr IN (SELECT ...)" construct, ** then there should be a single item on the stack. Write this @@ -122455,15 +141766,15 @@ static void selectInnerLoop( }else{ int r1 = sqlite3GetTempReg(pParse); assert( sqlite3Strlen30(pDest->zAffSdst)==nResultCol ); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult, nResultCol, + sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult, nResultCol, r1, pDest->zAffSdst, nResultCol); - sqlite3ExprCacheAffinityChange(pParse, regResult, nResultCol); sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regResult, nResultCol); sqlite3ReleaseTempReg(pParse, r1); } break; } + /* If any row exist in the result set, record that fact and abort. */ case SRT_Exists: { @@ -122473,7 +141784,7 @@ static void selectInnerLoop( } /* If this is a scalar select that is part of an expression, then - ** store the results in the appropriate memory cell or array of + ** store the results in the appropriate memory cell or array of ** memory cells and break out of the scan loop. */ case SRT_Mem: { @@ -122501,7 +141812,6 @@ static void selectInnerLoop( sqlite3VdbeAddOp1(v, OP_Yield, pDest->iSDParm); }else{ sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, nResultCol); - sqlite3ExprCacheAffinityChange(pParse, regResult, nResultCol); } break; } @@ -122529,7 +141839,7 @@ static void selectInnerLoop( /* If the destination is DistQueue, then cursor (iParm+1) is open ** on a second ephemeral index that holds all values every previously ** added to the queue. */ - addrTest = sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, 0, + addrTest = sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, 0, regResult, nResultCol); VdbeCoverage(v); } @@ -122585,7 +141895,7 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){ int nExtra = (N+X)*(sizeof(CollSeq*)+1) - sizeof(CollSeq*); KeyInfo *p = sqlite3DbMallocRawNN(db, sizeof(KeyInfo) + nExtra); if( p ){ - p->aSortOrder = (u8*)&p->aColl[N+X]; + p->aSortFlags = (u8*)&p->aColl[N+X]; p->nKeyField = (u16)N; p->nAllField = (u16)(N+X); p->enc = ENC(db); @@ -122593,7 +141903,7 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){ p->nRef = 1; memset(&p[1], 0, nExtra); }else{ - sqlite3OomFault(db); + return (KeyInfo*)sqlite3OomFault(db); } return p; } @@ -122603,9 +141913,10 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){ */ SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo *p){ if( p ){ + assert( p->db!=0 ); assert( p->nRef>0 ); p->nRef--; - if( p->nRef==0 ) sqlite3DbFreeNN(p->db, p); + if( p->nRef==0 ) sqlite3DbNNFreeNN(p->db, p); } } @@ -122644,7 +141955,7 @@ SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo *p){ return p->nRef==1; } ** function is responsible for seeing that this structure is eventually ** freed. */ -static KeyInfo *keyInfoFromExprList( +SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoFromExprList( Parse *pParse, /* Parsing context */ ExprList *pList, /* Form the KeyInfo object from this ExprList */ int iStart, /* Begin with this column of pList */ @@ -122662,7 +141973,7 @@ static KeyInfo *keyInfoFromExprList( assert( sqlite3KeyInfoIsWriteable(pInfo) ); for(i=iStart, pItem=pList->a+iStart; iaColl[i-iStart] = sqlite3ExprNNCollSeq(pParse, pItem->pExpr); - pInfo->aSortOrder[i-iStart] = pItem->sortOrder; + pInfo->aSortFlags[i-iStart] = pItem->fg.sortFlags; } } return pInfo; @@ -122671,7 +141982,7 @@ static KeyInfo *keyInfoFromExprList( /* ** Name of the connection operator, used for error messages. */ -static const char *selectOpName(int id){ +SQLITE_PRIVATE const char *sqlite3SelectOpName(int id){ char *z; switch( id ){ case TK_ALL: z = "UNION ALL"; break; @@ -122728,7 +142039,7 @@ static void generateSortTail( ){ Vdbe *v = pParse->pVdbe; /* The prepared statement */ int addrBreak = pSort->labelDone; /* Jump here to exit loop */ - int addrContinue = sqlite3VdbeMakeLabel(v); /* Jump here for next cycle */ + int addrContinue = sqlite3VdbeMakeLabel(pParse);/* Jump here for next cycle */ int addr; /* Top of output loop. Jump for Next. */ int addrOnce = 0; int iTab; @@ -122744,6 +142055,16 @@ static void generateSortTail( int bSeq; /* True if sorter record includes seq. no. */ int nRefKey = 0; struct ExprList_item *aOutEx = p->pEList->a; +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrExplain; /* Address of OP_Explain instruction */ +#endif + + ExplainQueryPlan2(addrExplain, (pParse, 0, + "USE TEMP B-TREE FOR %sORDER BY", pSort->nOBSat>0?"RIGHT PART OF ":"") + ); + sqlite3VdbeScanStatusRange(v, addrExplain,pSort->addrPush,pSort->addrPushEnd); + sqlite3VdbeScanStatusCounters(v, addrExplain, addrExplain, pSort->addrPush); + assert( addrBreak<0 ); if( pSort->labelBkOut ){ @@ -122764,11 +142085,19 @@ static void generateSortTail( iTab = pSort->iECursor; if( eDest==SRT_Output || eDest==SRT_Coroutine || eDest==SRT_Mem ){ + if( eDest==SRT_Mem && p->iOffset ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, pDest->iSdst); + } regRowid = 0; regRow = pDest->iSdst; }else{ regRowid = sqlite3GetTempReg(pParse); - regRow = sqlite3GetTempRange(pParse, nColumn); + if( eDest==SRT_EphemTab || eDest==SRT_Table ){ + regRow = sqlite3GetTempReg(pParse); + nColumn = 0; + }else{ + regRow = sqlite3GetTempRange(pParse, nColumn); + } } nKey = pOrderBy->nExpr - pSort->nOBSat; if( pSort->sortFlags & SORTFLAG_UseSorter ){ @@ -122777,12 +142106,12 @@ static void generateSortTail( if( pSort->labelBkOut ){ addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); } - sqlite3VdbeAddOp3(v, OP_OpenPseudo, iSortTab, regSortOut, + sqlite3VdbeAddOp3(v, OP_OpenPseudo, iSortTab, regSortOut, nKey+1+nColumn+nRefKey); if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce); addr = 1 + sqlite3VdbeAddOp2(v, OP_SorterSort, iTab, addrBreak); VdbeCoverage(v); - codeOffset(v, p->iOffset, addrContinue); + assert( p->iLimit==0 && p->iOffset==0 ); sqlite3VdbeAddOp3(v, OP_SorterData, iTab, regSortOut, iSortTab); bSeq = 0; }else{ @@ -122790,10 +142119,13 @@ static void generateSortTail( codeOffset(v, p->iOffset, addrContinue); iSortTab = iTab; bSeq = 1; + if( p->iOffset>0 ){ + sqlite3VdbeAddOp2(v, OP_AddImm, p->iLimit, -1); + } } for(i=0, iCol=nKey+bSeq-1; i=0; i--){ #ifdef SQLITE_ENABLE_SORTER_REFERENCES - if( aOutEx[i].bSorterRef ){ + if( aOutEx[i].fg.bSorterRef ){ sqlite3ExprCode(pParse, aOutEx[i].pExpr, regRow+i); }else #endif @@ -122842,12 +142174,14 @@ static void generateSortTail( iRead = iCol--; } sqlite3VdbeAddOp3(v, OP_Column, iSortTab, iRead, regRow+i); - VdbeComment((v, "%s", aOutEx[i].zName?aOutEx[i].zName : aOutEx[i].zSpan)); + VdbeComment((v, "%s", aOutEx[i].zEName)); } } + sqlite3VdbeScanStatusRange(v, addrExplain, addrExplain, -1); switch( eDest ){ case SRT_Table: case SRT_EphemTab: { + sqlite3VdbeAddOp3(v, OP_Column, iSortTab, nKey+bSeq, regRow); sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, regRowid); sqlite3VdbeAddOp3(v, OP_Insert, iParm, regRow, regRowid); sqlite3VdbeChangeP5(v, OPFLAG_APPEND); @@ -122858,7 +142192,6 @@ static void generateSortTail( assert( nColumn==sqlite3Strlen30(pDest->zAffSdst) ); sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, nColumn, regRowid, pDest->zAffSdst, nColumn); - sqlite3ExprCacheAffinityChange(pParse, regRow, nColumn); sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, regRowid, regRow, nColumn); break; } @@ -122867,13 +142200,23 @@ static void generateSortTail( break; } #endif + case SRT_Upfrom: { + int i2 = pDest->iSDParm2; + int r1 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_MakeRecord,regRow+(i2<0),nColumn-(i2<0),r1); + if( i2<0 ){ + sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, regRow); + }else{ + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regRow, i2); + } + break; + } default: { - assert( eDest==SRT_Output || eDest==SRT_Coroutine ); + assert( eDest==SRT_Output || eDest==SRT_Coroutine ); testcase( eDest==SRT_Output ); testcase( eDest==SRT_Coroutine ); if( eDest==SRT_Output ){ sqlite3VdbeAddOp2(v, OP_ResultRow, pDest->iSdst, nColumn); - sqlite3ExprCacheAffinityChange(pParse, pDest->iSdst, nColumn); }else{ sqlite3VdbeAddOp1(v, OP_Yield, pDest->iSDParm); } @@ -122896,6 +142239,7 @@ static void generateSortTail( }else{ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr); VdbeCoverage(v); } + sqlite3VdbeScanStatusRange(v, addrExplain, sqlite3VdbeCurrentAddr(v)-1, -1); if( pSort->regReturn ) sqlite3VdbeAddOp1(v, OP_Return, pSort->regReturn); sqlite3VdbeResolveLabel(v, addrBreak); } @@ -122904,21 +142248,18 @@ static void generateSortTail( ** Return a pointer to a string containing the 'declaration type' of the ** expression pExpr. The string may be treated as static by the caller. ** -** Also try to estimate the size of the returned value and return that -** result in *pEstWidth. -** ** The declaration type is the exact datatype definition extracted from the ** original CREATE TABLE statement if the expression is a column. The ** declaration type for a ROWID field is INTEGER. Exactly when an expression ** is considered a column can be complex in the presence of subqueries. The -** result-set expression in all of the following SELECT statements is +** result-set expression in all of the following SELECT statements is ** considered a column by this function. ** ** SELECT col FROM tbl; ** SELECT (SELECT col FROM tbl; ** SELECT (SELECT col FROM tbl); ** SELECT abc FROM (SELECT col AS abc FROM tbl); -** +** ** The declaration type for any expression other than a column is NULL. ** ** This routine has either 3 or 6 parameters depending on whether or not @@ -122930,7 +142271,7 @@ static void generateSortTail( # define columnType(A,B,C,D,E) columnTypeImpl(A,B) #endif static const char *columnTypeImpl( - NameContext *pNC, + NameContext *pNC, #ifndef SQLITE_ENABLE_COLUMN_METADATA Expr *pExpr #else @@ -122950,8 +142291,6 @@ static const char *columnTypeImpl( assert( pExpr!=0 ); assert( pNC->pSrcList!=0 ); - assert( pExpr->op!=TK_AGG_COLUMN ); /* This routine runes before aggregates - ** are processed */ switch( pExpr->op ){ case TK_COLUMN: { /* The expression is a column. Locate the table the column is being @@ -122975,33 +142314,39 @@ static const char *columnTypeImpl( if( pTab==0 ){ /* At one time, code such as "SELECT new.x" within a trigger would ** cause this condition to run. Since then, we have restructured how - ** trigger code is generated and so this condition is no longer + ** trigger code is generated and so this condition is no longer ** possible. However, it can still be true for statements like ** the following: ** ** CREATE TABLE t1(col INTEGER); ** SELECT (SELECT t1.col) FROM FROM t1; ** - ** when columnType() is called on the expression "t1.col" in the + ** when columnType() is called on the expression "t1.col" in the ** sub-select. In this case, set the column type to NULL, even ** though it should really be "INTEGER". ** ** This is not a problem, as the column type of "t1.col" is never - ** used. When columnType() is called on the expression + ** used. When columnType() is called on the expression ** "(SELECT t1.col)", the correct type is returned (see the TK_SELECT ** branch below. */ break; } - assert( pTab && pExpr->pTab==pTab ); + assert( pTab && ExprUseYTab(pExpr) && pExpr->y.pTab==pTab ); if( pS ){ /* The "table" is actually a sub-select or a view in the FROM clause ** of the SELECT statement. Return the declaration type and origin ** data for the result-set column of the sub-select. */ - if( iCol>=0 && iColpEList->nExpr ){ + if( iColpEList->nExpr +#ifdef SQLITE_ALLOW_ROWID_IN_VIEW + && iCol>=0 +#else + && ALWAYS(iCol>=0) +#endif + ){ /* If iCol is less than zero, then the expression requests the - ** rowid of the sub-select or view. This expression is legal (see + ** rowid of the sub-select or view. This expression is legal (see ** test case misc2.2.2) - it always evaluates to NULL. */ NameContext sNC; @@ -123009,7 +142354,7 @@ static const char *columnTypeImpl( sNC.pSrcList = pS->pSrc; sNC.pNext = pNC; sNC.pParse = pNC->pParse; - zType = columnType(&sNC, p,&zOrigDb,&zOrigTab,&zOrigCol); + zType = columnType(&sNC, p,&zOrigDb,&zOrigTab,&zOrigCol); } }else{ /* A real table or a CTE table */ @@ -123021,7 +142366,7 @@ static const char *columnTypeImpl( zType = "INTEGER"; zOrigCol = "rowid"; }else{ - zOrigCol = pTab->aCol[iCol].zName; + zOrigCol = pTab->aCol[iCol].zCnName; zType = sqlite3ColumnType(&pTab->aCol[iCol],0); } zOrigTab = pTab->zName; @@ -123047,19 +142392,21 @@ static const char *columnTypeImpl( ** statement. */ NameContext sNC; - Select *pS = pExpr->x.pSelect; - Expr *p = pS->pEList->a[0].pExpr; - assert( ExprHasProperty(pExpr, EP_xIsSelect) ); + Select *pS; + Expr *p; + assert( ExprUseXSelect(pExpr) ); + pS = pExpr->x.pSelect; + p = pS->pEList->a[0].pExpr; sNC.pSrcList = pS->pSrc; sNC.pNext = pNC; sNC.pParse = pNC->pParse; - zType = columnType(&sNC, p, &zOrigDb, &zOrigTab, &zOrigCol); + zType = columnType(&sNC, p, &zOrigDb, &zOrigTab, &zOrigCol); break; } #endif } -#ifdef SQLITE_ENABLE_COLUMN_METADATA +#ifdef SQLITE_ENABLE_COLUMN_METADATA if( pzOrigDb ){ assert( pzOrigTab && pzOrigCol ); *pzOrigDb = zOrigDb; @@ -123095,7 +142442,7 @@ static void generateColumnTypes( const char *zOrigCol = 0; zType = columnType(&sNC, p, &zOrigDb, &zOrigTab, &zOrigCol); - /* The vdbe must make its own copy of the column-type and other + /* The vdbe must make its own copy of the column-type and other ** column specific strings, in case the schema is reset before this ** virtual machine is deleted. */ @@ -123141,7 +142488,7 @@ static void generateColumnTypes( ** then the result column name with the table name ** prefix, ex: TABLE.COLUMN. Otherwise use zSpan. */ -static void generateColumnNames( +SQLITE_PRIVATE void sqlite3GenerateColumnNames( Parse *pParse, /* Parser context */ Select *pSelect /* Generate column names for this SELECT statement */ ){ @@ -123154,17 +142501,10 @@ static void generateColumnNames( int fullName; /* TABLE.COLUMN if no AS clause and is a direct table ref */ int srcName; /* COLUMN or TABLE.COLUMN if no AS clause and is direct */ -#ifndef SQLITE_OMIT_EXPLAIN - /* If this is an EXPLAIN, skip this step */ - if( pParse->explain ){ - return; - } -#endif - if( pParse->colNamesSet ) return; /* Column names are determined by the left-most term of a compound select */ while( pSelect->pPrior ) pSelect = pSelect->pPrior; - SELECTTRACE(1,pParse,pSelect,("generating column names\n")); + TREETRACE(0x80,pParse,pSelect,("generating column names\n")); pTabList = pSelect->pSrc; pEList = pSelect->pEList; assert( v!=0 ); @@ -123178,22 +142518,23 @@ static void generateColumnNames( assert( p!=0 ); assert( p->op!=TK_AGG_COLUMN ); /* Agg processing has not run yet */ - assert( p->op!=TK_COLUMN || p->pTab!=0 ); /* Covering idx not yet coded */ - if( pEList->a[i].zName ){ + assert( p->op!=TK_COLUMN + || (ExprUseYTab(p) && p->y.pTab!=0) ); /* Covering idx not yet coded */ + if( pEList->a[i].zEName && pEList->a[i].fg.eEName==ENAME_NAME ){ /* An AS clause always takes first priority */ - char *zName = pEList->a[i].zName; + char *zName = pEList->a[i].zEName; sqlite3VdbeSetColName(v, i, COLNAME_NAME, zName, SQLITE_TRANSIENT); }else if( srcName && p->op==TK_COLUMN ){ char *zCol; int iCol = p->iColumn; - pTab = p->pTab; + pTab = p->y.pTab; assert( pTab!=0 ); if( iCol<0 ) iCol = pTab->iPKey; assert( iCol==-1 || (iCol>=0 && iColnCol) ); if( iCol<0 ){ zCol = "rowid"; }else{ - zCol = pTab->aCol[iCol].zName; + zCol = pTab->aCol[iCol].zCnName; } if( fullName ){ char *zName = 0; @@ -123203,7 +142544,7 @@ static void generateColumnNames( sqlite3VdbeSetColName(v, i, COLNAME_NAME, zCol, SQLITE_TRANSIENT); } }else{ - const char *z = pEList->a[i].zSpan; + const char *z = pEList->a[i].zEName; z = z==0 ? sqlite3MPrintf(db, "column%d", i+1) : sqlite3DbStrDup(db, z); sqlite3VdbeSetColName(v, i, COLNAME_NAME, z, SQLITE_DYNAMIC); } @@ -123231,7 +142572,7 @@ static void generateColumnNames( ** and will break if those assumptions changes. Hence, use extreme caution ** when modifying this routine to avoid breaking legacy. ** -** See Also: generateColumnNames() +** See Also: sqlite3GenerateColumnNames() */ SQLITE_PRIVATE int sqlite3ColumnsFromExprList( Parse *pParse, /* Parsing context */ @@ -123247,13 +142588,14 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList( char *zName; /* Column name */ int nName; /* Size of name in zName[] */ Hash ht; /* Hash table of column names */ + Table *pTab; sqlite3HashInit(&ht); if( pEList ){ nCol = pEList->nExpr; aCol = sqlite3DbMallocZero(db, sizeof(aCol[0])*nCol); testcase( aCol==0 ); - if( nCol>32767 ) nCol = 32767; + if( NEVER(nCol>32767) ) nCol = 32767; }else{ nCol = 0; aCol = 0; @@ -123262,34 +142604,37 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList( *pnCol = nCol; *paCol = aCol; - for(i=0, pCol=aCol; imallocFailed; i++, pCol++){ + for(i=0, pCol=aCol; inErr; i++, pCol++){ + struct ExprList_item *pX = &pEList->a[i]; + struct ExprList_item *pCollide; /* Get an appropriate name for the column */ - if( (zName = pEList->a[i].zName)!=0 ){ + if( (zName = pX->zEName)!=0 && pX->fg.eEName==ENAME_NAME ){ /* If the column contains an "AS " phrase, use as the name */ }else{ - Expr *pColExpr = sqlite3ExprSkipCollate(pEList->a[i].pExpr); - while( pColExpr->op==TK_DOT ){ + Expr *pColExpr = sqlite3ExprSkipCollateAndLikely(pX->pExpr); + while( ALWAYS(pColExpr!=0) && pColExpr->op==TK_DOT ){ pColExpr = pColExpr->pRight; assert( pColExpr!=0 ); } - assert( pColExpr->op!=TK_AGG_COLUMN ); - if( pColExpr->op==TK_COLUMN ){ + if( pColExpr->op==TK_COLUMN + && ALWAYS( ExprUseYTab(pColExpr) ) + && ALWAYS( pColExpr->y.pTab!=0 ) + ){ /* For columns use the column name name */ int iCol = pColExpr->iColumn; - Table *pTab = pColExpr->pTab; - assert( pTab!=0 ); + pTab = pColExpr->y.pTab; if( iCol<0 ) iCol = pTab->iPKey; - zName = iCol>=0 ? pTab->aCol[iCol].zName : "rowid"; + zName = iCol>=0 ? pTab->aCol[iCol].zCnName : "rowid"; }else if( pColExpr->op==TK_ID ){ assert( !ExprHasProperty(pColExpr, EP_IntValue) ); zName = pColExpr->u.zToken; }else{ /* Use the original text of the column expression as its name */ - zName = pEList->a[i].zSpan; + assert( zName==pX->zEName ); /* pointer comparison intended */ } } - if( zName ){ + if( zName && !sqlite3IsTrueOrFalse(zName) ){ zName = sqlite3DbStrDup(db, zName); }else{ zName = sqlite3MPrintf(db,"column%d",i+1); @@ -123299,85 +142644,134 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList( ** append an integer to the name so that it becomes unique. */ cnt = 0; - while( zName && sqlite3HashFind(&ht, zName)!=0 ){ + while( zName && (pCollide = sqlite3HashFind(&ht, zName))!=0 ){ + if( pCollide->fg.bUsingTerm ){ + pCol->colFlags |= COLFLAG_NOEXPAND; + } nName = sqlite3Strlen30(zName); if( nName>0 ){ for(j=nName-1; j>0 && sqlite3Isdigit(zName[j]); j--){} if( zName[j]==':' ) nName = j; } zName = sqlite3MPrintf(db, "%.*z:%u", nName, zName, ++cnt); - if( cnt>3 ) sqlite3_randomness(sizeof(cnt), &cnt); + sqlite3ProgressCheck(pParse); + if( cnt>3 ){ + sqlite3_randomness(sizeof(cnt), &cnt); + } + } + pCol->zCnName = zName; + pCol->hName = sqlite3StrIHash(zName); + if( pX->fg.bNoExpand ){ + pCol->colFlags |= COLFLAG_NOEXPAND; } - pCol->zName = zName; sqlite3ColumnPropertiesFromName(0, pCol); - if( zName && sqlite3HashInsert(&ht, zName, pCol)==pCol ){ + if( zName && sqlite3HashInsert(&ht, zName, pX)==pX ){ sqlite3OomFault(db); } } sqlite3HashClear(&ht); - if( db->mallocFailed ){ + if( pParse->nErr ){ for(j=0; jrc; } return SQLITE_OK; } /* -** Add type and collation information to a column list based on -** a SELECT statement. -** -** The column list presumably came from selectColumnNamesFromExprList(). -** The column list has only names, not types or collations. This -** routine goes through and adds the types and collations. +** pTab is a transient Table object that represents a subquery of some +** kind (maybe a parenthesized subquery in the FROM clause of a larger +** query, or a VIEW, or a CTE). This routine computes type information +** for that Table object based on the Select object that implements the +** subquery. For the purposes of this routine, "type information" means: ** -** This routine requires that all identifiers in the SELECT -** statement be resolved. +** * The datatype name, as it might appear in a CREATE TABLE statement +** * Which collating sequence to use for the column +** * The affinity of the column */ -SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation( - Parse *pParse, /* Parsing contexts */ - Table *pTab, /* Add column type information to this table */ - Select *pSelect /* SELECT used to determine types and collations */ +SQLITE_PRIVATE void sqlite3SubqueryColumnTypes( + Parse *pParse, /* Parsing contexts */ + Table *pTab, /* Add column type information to this table */ + Select *pSelect, /* SELECT used to determine types and collations */ + char aff /* Default affinity. */ ){ sqlite3 *db = pParse->db; - NameContext sNC; Column *pCol; CollSeq *pColl; - int i; + int i,j; Expr *p; struct ExprList_item *a; + NameContext sNC; assert( pSelect!=0 ); assert( (pSelect->selFlags & SF_Resolved)!=0 ); - assert( pTab->nCol==pSelect->pEList->nExpr || db->mallocFailed ); - if( db->mallocFailed ) return; + assert( pTab->nCol==pSelect->pEList->nExpr || pParse->nErr>0 ); + assert( aff==SQLITE_AFF_NONE || aff==SQLITE_AFF_BLOB ); + if( db->mallocFailed || IN_RENAME_OBJECT ) return; + while( pSelect->pPrior ) pSelect = pSelect->pPrior; + a = pSelect->pEList->a; memset(&sNC, 0, sizeof(sNC)); sNC.pSrcList = pSelect->pSrc; - a = pSelect->pEList->a; for(i=0, pCol=pTab->aCol; inCol; i++, pCol++){ const char *zType; - int n, m; + i64 n; + pTab->tabFlags |= (pCol->colFlags & COLFLAG_NOINSERT); p = a[i].pExpr; - zType = columnType(&sNC, p, 0, 0, 0); /* pCol->szEst = ... // Column size est for SELECT tables never used */ pCol->affinity = sqlite3ExprAffinity(p); + if( pCol->affinity<=SQLITE_AFF_NONE ){ + pCol->affinity = aff; + } + if( pCol->affinity>=SQLITE_AFF_TEXT && pSelect->pNext ){ + int m = 0; + Select *pS2; + for(m=0, pS2=pSelect->pNext; pS2; pS2=pS2->pNext){ + m |= sqlite3ExprDataType(pS2->pEList->a[i].pExpr); + } + if( pCol->affinity==SQLITE_AFF_TEXT && (m&0x01)!=0 ){ + pCol->affinity = SQLITE_AFF_BLOB; + }else + if( pCol->affinity>=SQLITE_AFF_NUMERIC && (m&0x02)!=0 ){ + pCol->affinity = SQLITE_AFF_BLOB; + } + if( pCol->affinity>=SQLITE_AFF_NUMERIC && p->op==TK_CAST ){ + pCol->affinity = SQLITE_AFF_FLEXNUM; + } + } + zType = columnType(&sNC, p, 0, 0, 0); + if( zType==0 || pCol->affinity!=sqlite3AffinityType(zType, 0) ){ + if( pCol->affinity==SQLITE_AFF_NUMERIC + || pCol->affinity==SQLITE_AFF_FLEXNUM + ){ + zType = "NUM"; + }else{ + zType = 0; + for(j=1; jaffinity ){ + zType = sqlite3StdType[j]; + break; + } + } + } + } if( zType ){ - m = sqlite3Strlen30(zType); - n = sqlite3Strlen30(pCol->zName); - pCol->zName = sqlite3DbReallocOrFree(db, pCol->zName, n+m+2); - if( pCol->zName ){ - memcpy(&pCol->zName[n+1], zType, m+1); + i64 m = sqlite3Strlen30(zType); + n = sqlite3Strlen30(pCol->zCnName); + pCol->zCnName = sqlite3DbReallocOrFree(db, pCol->zCnName, n+m+2); + pCol->colFlags &= ~(COLFLAG_HASTYPE|COLFLAG_HASCOLL); + if( pCol->zCnName ){ + memcpy(&pCol->zCnName[n+1], zType, m+1); pCol->colFlags |= COLFLAG_HASTYPE; } } - if( pCol->affinity==0 ) pCol->affinity = SQLITE_AFF_BLOB; pColl = sqlite3ExprCollSeq(pParse, p); - if( pColl && pCol->zColl==0 ){ - pCol->zColl = sqlite3DbStrDup(db, pColl->zName); + if( pColl ){ + assert( pTab->pIndex==0 ); + sqlite3ColumnSetColl(db, pCol, pColl->zName); } } pTab->szTabRow = 1; /* Any non-zero value works */ @@ -123387,30 +142781,27 @@ SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation( ** Given a SELECT statement, generate a Table structure that describes ** the result set of that SELECT. */ -SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){ +SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect, char aff){ Table *pTab; sqlite3 *db = pParse->db; - int savedFlags; + u64 savedFlags; savedFlags = db->flags; - db->flags &= ~SQLITE_FullColNames; + db->flags &= ~(u64)SQLITE_FullColNames; db->flags |= SQLITE_ShortColNames; sqlite3SelectPrep(pParse, pSelect, 0); + db->flags = savedFlags; if( pParse->nErr ) return 0; while( pSelect->pPrior ) pSelect = pSelect->pPrior; - db->flags = savedFlags; pTab = sqlite3DbMallocZero(db, sizeof(Table) ); if( pTab==0 ){ return 0; } - /* The sqlite3ResultSetOfSelect() is only used n contexts where lookaside - ** is disabled */ - assert( db->lookaside.bDisable ); pTab->nTabRef = 1; pTab->zName = 0; pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); sqlite3ColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); - sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSelect); + sqlite3SubqueryColumnTypes(pParse, pTab, pSelect, aff); pTab->iPKey = -1; if( db->mallocFailed ){ sqlite3DeleteTable(db, pTab); @@ -123440,9 +142831,9 @@ SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse *pParse){ ** Compute the iLimit and iOffset fields of the SELECT based on the ** pLimit expressions. pLimit->pLeft and pLimit->pRight hold the expressions ** that appear in the original SQL statement after the LIMIT and OFFSET -** keywords. Or NULL if those keywords are omitted. iLimit and iOffset -** are the integer memory register numbers for counters used to compute -** the limit and offset. If there is no limit and/or offset, then +** keywords. Or NULL if those keywords are omitted. iLimit and iOffset +** are the integer memory register numbers for counters used to compute +** the limit and offset. If there is no limit and/or offset, then ** iLimit and iOffset are negative. ** ** This routine changes the values of iLimit and iOffset only if @@ -123468,13 +142859,12 @@ static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){ if( p->iLimit ) return; - /* + /* ** "LIMIT -1" always shows all rows. There is some ** controversy about what the correct behavior should be. ** The current implementation interprets "LIMIT 0" to mean ** no rows. */ - sqlite3ExprCacheClear(pParse); if( pLimit ){ assert( pLimit->op==TK_LIMIT ); assert( pLimit->pLeft!=0 ); @@ -123545,7 +142935,7 @@ static CollSeq *multiSelectCollSeq(Parse *pParse, Select *p, int iCol){ */ static KeyInfo *multiSelectOrderByKeyInfo(Parse *pParse, Select *p, int nExtra){ ExprList *pOrderBy = p->pOrderBy; - int nOrderBy = p->pOrderBy->nExpr; + int nOrderBy = ALWAYS(pOrderBy!=0) ? pOrderBy->nExpr : 0; sqlite3 *db = pParse->db; KeyInfo *pRet = sqlite3KeyInfoAlloc(db, nOrderBy+nExtra, 1); if( pRet ){ @@ -123565,7 +142955,7 @@ static KeyInfo *multiSelectOrderByKeyInfo(Parse *pParse, Select *p, int nExtra){ } assert( sqlite3KeyInfoIsWriteable(pRet) ); pRet->aColl[i] = pColl; - pRet->aSortOrder[i] = pOrderBy->a[i].sortOrder; + pRet->aSortFlags[i] = pOrderBy->a[i].fg.sortFlags; } } @@ -123597,7 +142987,7 @@ static KeyInfo *multiSelectOrderByKeyInfo(Parse *pParse, Select *p, int nExtra){ ** inserted into the Queue table. The iDistinct table keeps a copy of all rows ** that have ever been inserted into Queue and causes duplicates to be ** discarded. If the operator is UNION ALL, then duplicates are allowed. -** +** ** If the query has an ORDER BY, then entries in the Queue table are kept in ** ORDER BY order and the first entry is extracted for each cycle. Without ** an ORDER BY, the Queue table is just a FIFO. @@ -123617,7 +143007,8 @@ static void generateWithRecursiveQuery( SrcList *pSrc = p->pSrc; /* The FROM clause of the recursive query */ int nCol = p->pEList->nExpr; /* Number of columns in the recursive table */ Vdbe *v = pParse->pVdbe; /* The prepared statement under construction */ - Select *pSetup = p->pPrior; /* The setup query */ + Select *pSetup; /* The setup query */ + Select *pFirstRec; /* Left-most recursive term */ int addrTop; /* Top of the loop */ int addrCont, addrBreak; /* CONTINUE and BREAK addresses */ int iCurrent = 0; /* The Current table */ @@ -123625,18 +143016,25 @@ static void generateWithRecursiveQuery( int iQueue; /* The Queue table */ int iDistinct = 0; /* To ensure unique results if UNION */ int eDest = SRT_Fifo; /* How to write to Queue */ - SelectDest destQueue; /* SelectDest targetting the Queue table */ + SelectDest destQueue; /* SelectDest targeting the Queue table */ int i; /* Loop counter */ int rc; /* Result code */ ExprList *pOrderBy; /* The ORDER BY clause */ Expr *pLimit; /* Saved LIMIT and OFFSET */ int regLimit, regOffset; /* Registers used by LIMIT and OFFSET */ +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWin ){ + sqlite3ErrorMsg(pParse, "cannot use window functions in recursive queries"); + return; + } +#endif + /* Obtain authorization to do a recursive query */ if( sqlite3AuthCheck(pParse, SQLITE_RECURSIVE, 0, 0, 0) ) return; /* Process the LIMIT and OFFSET clauses, if they exist */ - addrBreak = sqlite3VdbeMakeLabel(v); + addrBreak = sqlite3VdbeMakeLabel(pParse); p->nSelectRow = 320; /* 4 billion rows */ computeLimitRegisters(pParse, p, addrBreak); pLimit = p->pLimit; @@ -123686,7 +143084,24 @@ static void generateWithRecursiveQuery( /* Detach the ORDER BY clause from the compound SELECT */ p->pOrderBy = 0; + /* Figure out how many elements of the compound SELECT are part of the + ** recursive query. Make sure no recursive elements use aggregate + ** functions. Mark the recursive elements as UNION ALL even if they + ** are really UNION because the distinctness will be enforced by the + ** iDistinct table. pFirstRec is left pointing to the left-most + ** recursive term of the CTE. + */ + for(pFirstRec=p; ALWAYS(pFirstRec!=0); pFirstRec=pFirstRec->pPrior){ + if( pFirstRec->selFlags & SF_Aggregate ){ + sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported"); + goto end_of_recursive_query; + } + pFirstRec->op = TK_ALL; + if( (pFirstRec->pPrior->selFlags & SF_Recursive)==0 ) break; + } + /* Store the results of the setup-query in Queue. */ + pSetup = pFirstRec->pPrior; pSetup->pNext = 0; ExplainQueryPlan((pParse, 1, "SETUP")); rc = sqlite3Select(pParse, pSetup, &destQueue); @@ -123706,7 +143121,7 @@ static void generateWithRecursiveQuery( sqlite3VdbeAddOp1(v, OP_Delete, iQueue); /* Output the single row in Current */ - addrCont = sqlite3VdbeMakeLabel(v); + addrCont = sqlite3VdbeMakeLabel(pParse); codeOffset(v, regOffset, addrCont); selectInnerLoop(pParse, p, iCurrent, 0, 0, pDest, addrCont, addrBreak); @@ -123719,15 +143134,11 @@ static void generateWithRecursiveQuery( /* Execute the recursive SELECT taking the single row in Current as ** the value for the recursive-table. Store the results in the Queue. */ - if( p->selFlags & SF_Aggregate ){ - sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported"); - }else{ - p->pPrior = 0; - ExplainQueryPlan((pParse, 1, "RECURSIVE STEP")); - sqlite3Select(pParse, p, &destQueue); - assert( p->pPrior==0 ); - p->pPrior = pSetup; - } + pFirstRec->pPrior = 0; + ExplainQueryPlan((pParse, 1, "RECURSIVE STEP")); + sqlite3Select(pParse, p, &destQueue); + assert( pFirstRec->pPrior==0 ); + pFirstRec->pPrior = pSetup; /* Keep running the loop until the Queue is empty */ sqlite3VdbeGoto(v, addrTop); @@ -123762,7 +143173,7 @@ static int multiSelectOrderBy( ** The "LIMIT of exactly 1" case of condition (1) comes about when a VALUES ** clause occurs within scalar expression (ex: "SELECT (VALUES(1),(2),(3))"). ** The sqlite3CodeSubselect will have added the LIMIT 1 clause in tht case. -** Since the limit is exactly 1, we only need to evalutes the left-most VALUES. +** Since the limit is exactly 1, we only need to evaluate the left-most VALUES. */ static int multiSelectValues( Parse *pParse, /* Parsing context */ @@ -123777,6 +143188,9 @@ static int multiSelectValues( assert( p->selFlags & SF_Values ); assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) ); assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr ); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWin ) return -1; +#endif if( p->pPrior==0 ) break; assert( p->pPrior->pNext==p ); p = p->pPrior; @@ -123793,6 +143207,16 @@ static int multiSelectValues( return rc; } +/* +** Return true if the SELECT statement which is known to be the recursive +** part of a recursive CTE still has its anchor terms attached. If the +** anchor terms have already been removed, then return false. +*/ +static int hasAnchor(Select *p){ + while( p && (p->selFlags & SF_Recursive)!=0 ){ p = p->pPrior; } + return p!=0; +} + /* ** This routine is called to process a compound query form from ** two or more separate queries using UNION, UNION ALL, EXCEPT, or @@ -123800,7 +143224,7 @@ static int multiSelectValues( ** ** "p" points to the right-most of the two queries. the query on the ** left is p->pPrior. The left query could also be a compound query -** in which case this routine will be called recursively. +** in which case this routine will be called recursively. ** ** The results of the total query are to be written into a destination ** of type eDest with parameter iParm. @@ -123841,15 +143265,12 @@ static int multiSelect( */ assert( p && p->pPrior ); /* Calling function guarantees this much */ assert( (p->selFlags & SF_Recursive)==0 || p->op==TK_ALL || p->op==TK_UNION ); + assert( p->selFlags & SF_Compound ); db = pParse->db; pPrior = p->pPrior; dest = *pDest; - if( pPrior->pOrderBy || pPrior->pLimit ){ - sqlite3ErrorMsg(pParse,"%s clause should come after %s not before", - pPrior->pOrderBy!=0 ? "ORDER BY" : "LIMIT", selectOpName(p->op)); - rc = 1; - goto multi_select_end; - } + assert( pPrior->pOrderBy==0 ); + assert( pPrior->pLimit==0 ); v = sqlite3GetVdbe(pParse); assert( v!=0 ); /* The VDBE already created by calling function */ @@ -123866,7 +143287,8 @@ static int multiSelect( */ if( p->selFlags & SF_MultiValue ){ rc = multiSelectValues(pParse, p, &dest); - goto multi_select_end; + if( rc>=0 ) goto multi_select_end; + rc = SQLITE_OK; } /* Make sure all SELECTs in the statement have the same number of elements @@ -123876,7 +143298,7 @@ static int multiSelect( assert( p->pEList->nExpr==pPrior->pEList->nExpr ); #ifndef SQLITE_OMIT_CTE - if( p->selFlags & SF_Recursive ){ + if( (p->selFlags & SF_Recursive)!=0 && hasAnchor(p) ){ generateWithRecursiveQuery(pParse, p, &dest); }else #endif @@ -123899,13 +143321,14 @@ static int multiSelect( switch( p->op ){ case TK_ALL: { int addr = 0; - int nLimit; + int nLimit = 0; /* Initialize to suppress harmless compiler warning */ assert( !pPrior->pLimit ); pPrior->iLimit = p->iLimit; pPrior->iOffset = p->iOffset; pPrior->pLimit = p->pLimit; + TREETRACE(0x200, pParse, p, ("multiSelect UNION ALL left...\n")); rc = sqlite3Select(pParse, pPrior, &dest); - p->pLimit = 0; + pPrior->pLimit = 0; if( rc ){ goto multi_select_end; } @@ -123921,14 +143344,15 @@ static int multiSelect( } } ExplainQueryPlan((pParse, 1, "UNION ALL")); + TREETRACE(0x200, pParse, p, ("multiSelect UNION ALL right...\n")); rc = sqlite3Select(pParse, p, &dest); testcase( rc!=SQLITE_OK ); pDelete = p->pPrior; p->pPrior = pPrior; p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow); - if( pPrior->pLimit - && sqlite3ExprIsInteger(pPrior->pLimit->pLeft, &nLimit) - && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) + if( p->pLimit + && sqlite3ExprIsInteger(p->pLimit->pLeft, &nLimit) + && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) ){ p->nSelectRow = sqlite3LogEst((u64)nLimit); } @@ -123945,7 +143369,7 @@ static int multiSelect( Expr *pLimit; /* Saved values of p->nLimit */ int addr; SelectDest uniondest; - + testcase( p->op==TK_EXCEPT ); testcase( p->op==TK_UNION ); priorOp = SRT_Union; @@ -123967,16 +143391,18 @@ static int multiSelect( findRightmost(p)->selFlags |= SF_UsesEphemeral; assert( p->pEList ); } - + + /* Code the SELECT statements to our left */ assert( !pPrior->pOrderBy ); sqlite3SelectDestInit(&uniondest, priorOp, unionTab); + TREETRACE(0x200, pParse, p, ("multiSelect EXCEPT/UNION left...\n")); rc = sqlite3Select(pParse, pPrior, &uniondest); if( rc ){ goto multi_select_end; } - + /* Code the current SELECT statement */ if( p->op==TK_EXCEPT ){ @@ -123990,12 +143416,11 @@ static int multiSelect( p->pLimit = 0; uniondest.eDest = op; ExplainQueryPlan((pParse, 1, "%s USING TEMP B-TREE", - selectOpName(p->op))); + sqlite3SelectOpName(p->op))); + TREETRACE(0x200, pParse, p, ("multiSelect EXCEPT/UNION right...\n")); rc = sqlite3Select(pParse, p, &uniondest); testcase( rc!=SQLITE_OK ); - /* Query flattening in sqlite3Select() might refill p->pOrderBy. - ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */ - sqlite3ExprListDelete(db, p->pOrderBy); + assert( p->pOrderBy==0 ); pDelete = p->pPrior; p->pPrior = pPrior; p->pOrderBy = 0; @@ -124006,16 +143431,16 @@ static int multiSelect( p->pLimit = pLimit; p->iLimit = 0; p->iOffset = 0; - + /* Convert the data in the temporary table into whatever form ** it is that we currently need. */ assert( unionTab==dest.iSDParm || dest.eDest!=priorOp ); - if( dest.eDest!=priorOp ){ + assert( p->pEList || db->mallocFailed ); + if( dest.eDest!=priorOp && db->mallocFailed==0 ){ int iCont, iBreak, iStart; - assert( p->pEList ); - iBreak = sqlite3VdbeMakeLabel(v); - iCont = sqlite3VdbeMakeLabel(v); + iBreak = sqlite3VdbeMakeLabel(pParse); + iCont = sqlite3VdbeMakeLabel(pParse); computeLimitRegisters(pParse, p, iBreak); sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); VdbeCoverage(v); iStart = sqlite3VdbeCurrentAddr(v); @@ -124035,7 +143460,7 @@ static int multiSelect( int addr; SelectDest intersectdest; int r1; - + /* INTERSECT is different from the others since it requires ** two temporary tables. Hence it has its own case. Begin ** by allocating the tables we will need. @@ -124043,21 +143468,22 @@ static int multiSelect( tab1 = pParse->nTab++; tab2 = pParse->nTab++; assert( p->pOrderBy==0 ); - + addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab1, 0); assert( p->addrOpenEphm[0] == -1 ); p->addrOpenEphm[0] = addr; findRightmost(p)->selFlags |= SF_UsesEphemeral; assert( p->pEList ); - + /* Code the SELECTs to our left into temporary table "tab1". */ sqlite3SelectDestInit(&intersectdest, SRT_Union, tab1); + TREETRACE(0x400, pParse, p, ("multiSelect INTERSECT left...\n")); rc = sqlite3Select(pParse, pPrior, &intersectdest); if( rc ){ goto multi_select_end; } - + /* Code the current SELECT into temporary table "tab2" */ addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0); @@ -124068,7 +143494,8 @@ static int multiSelect( p->pLimit = 0; intersectdest.iSDParm = tab2; ExplainQueryPlan((pParse, 1, "%s USING TEMP B-TREE", - selectOpName(p->op))); + sqlite3SelectOpName(p->op))); + TREETRACE(0x400, pParse, p, ("multiSelect INTERSECT right...\n")); rc = sqlite3Select(pParse, p, &intersectdest); testcase( rc!=SQLITE_OK ); pDelete = p->pPrior; @@ -124078,13 +143505,14 @@ static int multiSelect( } sqlite3ExprDelete(db, p->pLimit); p->pLimit = pLimit; - + /* Generate code to take the intersection of the two temporary ** tables. */ + if( rc ) break; assert( p->pEList ); - iBreak = sqlite3VdbeMakeLabel(v); - iCont = sqlite3VdbeMakeLabel(v); + iBreak = sqlite3VdbeMakeLabel(pParse); + iCont = sqlite3VdbeMakeLabel(pParse); computeLimitRegisters(pParse, p, iBreak); sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); VdbeCoverage(v); r1 = sqlite3GetTempReg(pParse); @@ -124102,15 +143530,16 @@ static int multiSelect( break; } } - + #ifndef SQLITE_OMIT_EXPLAIN if( p->pNext==0 ){ ExplainQueryPlanPop(pParse); } #endif } - - /* Compute collating sequences used by + if( pParse->nErr ) goto multi_select_end; + + /* Compute collating sequences used by ** temporary tables needed to implement the compound select. ** Attach the KeyInfo structure to all temporary tables. ** @@ -124127,6 +143556,7 @@ static int multiSelect( int nCol; /* Number of columns in result set */ assert( p->pNext==0 ); + assert( p->pEList!=0 ); nCol = p->pEList->nExpr; pKeyInfo = sqlite3KeyInfoAlloc(db, nCol, 1); if( !pKeyInfo ){ @@ -124161,7 +143591,11 @@ static int multiSelect( multi_select_end: pDest->iSdst = dest.iSdst; pDest->nSdst = dest.nSdst; - sqlite3SelectDelete(db, pDelete); + if( pDelete ){ + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3SelectDelete, + pDelete); + } return rc; } #endif /* SQLITE_OMIT_COMPOUND_SELECT */ @@ -124175,13 +143609,14 @@ SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p){ sqlite3ErrorMsg(pParse, "all VALUES must have the same number of terms"); }else{ sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s" - " do not have the same number of result columns", selectOpName(p->op)); + " do not have the same number of result columns", + sqlite3SelectOpName(p->op)); } } /* ** Code an output subroutine for a coroutine implementation of a -** SELECT statment. +** SELECT statement. ** ** The data to be output is contained in pIn->iSdst. There are ** pIn->nSdst columns to be output. pDest is where the output should @@ -124214,9 +143649,9 @@ static int generateOutputSubroutine( int addr; addr = sqlite3VdbeCurrentAddr(v); - iContinue = sqlite3VdbeMakeLabel(v); + iContinue = sqlite3VdbeMakeLabel(pParse); - /* Suppress duplicates for UNION, EXCEPT, and INTERSECT + /* Suppress duplicates for UNION, EXCEPT, and INTERSECT */ if( regPrev ){ int addr1, addr2; @@ -124258,9 +143693,8 @@ static int generateOutputSubroutine( int r1; testcase( pIn->nSdst>1 ); r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4(v, OP_MakeRecord, pIn->iSdst, pIn->nSdst, + sqlite3VdbeAddOp4(v, OP_MakeRecord, pIn->iSdst, pIn->nSdst, r1, pDest->zAffSdst, pIn->nSdst); - sqlite3ExprCacheAffinityChange(pParse, pIn->iSdst, pIn->nSdst); sqlite3VdbeAddOp4Int(v, OP_IdxInsert, pDest->iSDParm, r1, pIn->iSdst, pIn->nSdst); sqlite3ReleaseTempReg(pParse, r1); @@ -124269,11 +143703,12 @@ static int generateOutputSubroutine( /* If this is a scalar select that is part of an expression, then ** store the results in the appropriate memory cell and break out - ** of the scan loop. + ** of the scan loop. Note that the select might return multiple columns + ** if it is the RHS of a row-value IN operator. */ case SRT_Mem: { - assert( pIn->nSdst==1 || pParse->nErr>0 ); testcase( pIn->nSdst!=1 ); - sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSDParm, 1); + testcase( pIn->nSdst>1 ); + sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSDParm, pIn->nSdst); /* The LIMIT clause will jump out of the loop for us */ break; } @@ -124296,14 +143731,13 @@ static int generateOutputSubroutine( ** SRT_Output. This routine is never called with any other ** destination other than the ones handled above or SRT_Output. ** - ** For SRT_Output, results are stored in a sequence of registers. + ** For SRT_Output, results are stored in a sequence of registers. ** Then the OP_ResultRow opcode is used to cause sqlite3_step() to ** return the next row of result. */ default: { assert( pDest->eDest==SRT_Output ); sqlite3VdbeAddOp2(v, OP_ResultRow, pIn->iSdst, pIn->nSdst); - sqlite3ExprCacheAffinityChange(pParse, pIn->iSdst, pIn->nSdst); break; } } @@ -124354,7 +143788,7 @@ static int generateOutputSubroutine( ** ** EofB: Called when data is exhausted from selectB. ** -** The implementation of the latter five subroutines depend on which +** The implementation of the latter five subroutines depend on which ** is used: ** ** @@ -124404,7 +143838,7 @@ static int generateOutputSubroutine( ** ** We call AltB, AeqB, AgtB, EofA, and EofB "subroutines" but they are not ** actually called using Gosub and they do not Return. EofA and EofB loop -** until all data is exhausted then jump to the "end" labe. AltB, AeqB, +** until all data is exhausted then jump to the "end" label. AltB, AeqB, ** and AgtB jump to either L2 or to one of EofA or EofB. */ #ifndef SQLITE_OMIT_COMPOUND_SELECT @@ -124415,6 +143849,8 @@ static int multiSelectOrderBy( ){ int i, j; /* Loop counters */ Select *pPrior; /* Another SELECT immediately to our left */ + Select *pSplit; /* Left-most SELECT in the right-hand group */ + int nSelect; /* Number of SELECT statements in the compound */ Vdbe *v; /* Generate code to this VDBE */ SelectDest destA; /* Destination for coroutine A */ SelectDest destB; /* Destination for coroutine B */ @@ -124439,29 +143875,28 @@ static int multiSelectOrderBy( int savedOffset; /* Saved value of p->iOffset */ int labelCmpr; /* Label for the start of the merge algorithm */ int labelEnd; /* Label for the end of the overall SELECT stmt */ - int addr1; /* Jump instructions that get retargetted */ + int addr1; /* Jump instructions that get retargeted */ int op; /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */ KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */ KeyInfo *pKeyMerge; /* Comparison information for merging rows */ sqlite3 *db; /* Database connection */ ExprList *pOrderBy; /* The ORDER BY clause */ int nOrderBy; /* Number of terms in the ORDER BY clause */ - int *aPermute; /* Mapping from ORDER BY terms to result set columns */ + u32 *aPermute; /* Mapping from ORDER BY terms to result set columns */ assert( p->pOrderBy!=0 ); assert( pKeyDup==0 ); /* "Managed" code needs this. Ticket #3382. */ db = pParse->db; v = pParse->pVdbe; assert( v!=0 ); /* Already thrown the error if VDBE alloc failed */ - labelEnd = sqlite3VdbeMakeLabel(v); - labelCmpr = sqlite3VdbeMakeLabel(v); + labelEnd = sqlite3VdbeMakeLabel(pParse); + labelCmpr = sqlite3VdbeMakeLabel(pParse); /* Patch up the ORDER BY clause */ - op = p->op; - pPrior = p->pPrior; - assert( pPrior->pOrderBy==0 ); + op = p->op; + assert( p->pPrior->pOrderBy==0 ); pOrderBy = p->pOrderBy; assert( pOrderBy ); nOrderBy = pOrderBy->nExpr; @@ -124474,6 +143909,7 @@ static int multiSelectOrderBy( for(i=1; db->mallocFailed==0 && i<=p->pEList->nExpr; i++){ struct ExprList_item *pItem; for(j=0, pItem=pOrderBy->a; ju.x.iOrderByCol>0 ); if( pItem->u.x.iOrderByCol==i ) break; } @@ -124495,11 +143931,12 @@ static int multiSelectOrderBy( ** to the right and the left are evaluated, they use the correct ** collation. */ - aPermute = sqlite3DbMallocRawNN(db, sizeof(int)*(nOrderBy + 1)); + aPermute = sqlite3DbMallocRawNN(db, sizeof(u32)*(nOrderBy + 1)); if( aPermute ){ struct ExprList_item *pItem; aPermute[0] = nOrderBy; for(i=1, pItem=pOrderBy->a; i<=nOrderBy; i++, pItem++){ + assert( pItem!=0 ); assert( pItem->u.x.iOrderByCol>0 ); assert( pItem->u.x.iOrderByCol<=p->pEList->nExpr ); aPermute[i] = pItem->u.x.iOrderByCol - 1; @@ -124509,11 +143946,6 @@ static int multiSelectOrderBy( pKeyMerge = 0; } - /* Reattach the ORDER BY clause to the query. - */ - p->pOrderBy = pOrderBy; - pPrior->pOrderBy = sqlite3ExprListDup(pParse->db, pOrderBy, 0); - /* Allocate a range of temporary registers and the KeyInfo needed ** for the logic that removes duplicate result rows when the ** operator is UNION, EXCEPT, or INTERSECT (but not UNION ALL). @@ -124531,19 +143963,37 @@ static int multiSelectOrderBy( assert( sqlite3KeyInfoIsWriteable(pKeyDup) ); for(i=0; iaColl[i] = multiSelectCollSeq(pParse, p, i); - pKeyDup->aSortOrder[i] = 0; + pKeyDup->aSortFlags[i] = 0; } } } - + /* Separate the left and the right query from one another */ - p->pPrior = 0; - pPrior->pNext = 0; - sqlite3ResolveOrderGroupBy(pParse, p, p->pOrderBy, "ORDER"); - if( pPrior->pPrior==0 ){ - sqlite3ResolveOrderGroupBy(pParse, pPrior, pPrior->pOrderBy, "ORDER"); + nSelect = 1; + if( (op==TK_ALL || op==TK_UNION) + && OptimizationEnabled(db, SQLITE_BalancedMerge) + ){ + for(pSplit=p; pSplit->pPrior!=0 && pSplit->op==op; pSplit=pSplit->pPrior){ + nSelect++; + assert( pSplit->pPrior->pNext==pSplit ); + } } + if( nSelect<=3 ){ + pSplit = p; + }else{ + pSplit = p; + for(i=2; ipPrior; } + } + pPrior = pSplit->pPrior; + assert( pPrior!=0 ); + pSplit->pPrior = 0; + pPrior->pNext = 0; + assert( p->pOrderBy == pOrderBy ); + assert( pOrderBy!=0 || db->mallocFailed ); + pPrior->pOrderBy = sqlite3ExprListDup(pParse->db, pOrderBy, 0); + sqlite3ResolveOrderGroupBy(pParse, p, p->pOrderBy, "ORDER"); + sqlite3ResolveOrderGroupBy(pParse, pPrior, pPrior->pOrderBy, "ORDER"); /* Compute the limit registers */ computeLimitRegisters(pParse, p, labelEnd); @@ -124566,7 +144016,7 @@ static int multiSelectOrderBy( sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA); sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB); - ExplainQueryPlan((pParse, 1, "MERGE (%s)", selectOpName(p->op))); + ExplainQueryPlan((pParse, 1, "MERGE (%s)", sqlite3SelectOpName(p->op))); /* Generate a coroutine to evaluate the SELECT statement to the ** left of the compound operator - the "A" select. @@ -124580,7 +144030,7 @@ static int multiSelectOrderBy( sqlite3VdbeEndCoroutine(v, regAddrA); sqlite3VdbeJumpHere(v, addr1); - /* Generate a coroutine to evaluate the SELECT statement on + /* Generate a coroutine to evaluate the SELECT statement on ** the right - the "B" select */ addrSelectB = sqlite3VdbeCurrentAddr(v) + 1; @@ -124589,7 +144039,7 @@ static int multiSelectOrderBy( savedLimit = p->iLimit; savedOffset = p->iOffset; p->iLimit = regLimitB; - p->iOffset = 0; + p->iOffset = 0; ExplainQueryPlan((pParse, 1, "RIGHT")); sqlite3Select(pParse, p, &destB); p->iLimit = savedLimit; @@ -124603,7 +144053,7 @@ static int multiSelectOrderBy( addrOutA = generateOutputSubroutine(pParse, p, &destA, pDest, regOutA, regPrev, pKeyDup, labelEnd); - + /* Generate a subroutine that outputs the current row of the B ** select as the next output row of the compound select. */ @@ -124620,7 +144070,7 @@ static int multiSelectOrderBy( */ if( op==TK_EXCEPT || op==TK_INTERSECT ){ addrEofA_noB = addrEofA = labelEnd; - }else{ + }else{ VdbeNoopComment((v, "eof-A subroutine")); addrEofA = sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); addrEofA_noB = sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, labelEnd); @@ -124635,7 +144085,7 @@ static int multiSelectOrderBy( if( op==TK_INTERSECT ){ addrEofB = addrEofA; if( p->nSelectRow > pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow; - }else{ + }else{ VdbeNoopComment((v, "eof-B subroutine")); addrEofB = sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, labelEnd); VdbeCoverage(v); @@ -124692,13 +144142,16 @@ static int multiSelectOrderBy( */ sqlite3VdbeResolveLabel(v, labelEnd); - /* Reassembly the compound query so that it will be freed correctly - ** by the calling function */ - if( p->pPrior ){ - sqlite3SelectDelete(db, p->pPrior); + /* Make arrangements to free the 2nd and subsequent arms of the compound + ** after the parse has finished */ + if( pSplit->pPrior ){ + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3SelectDelete, pSplit->pPrior); } - p->pPrior = pPrior; - pPrior->pNext = p; + pSplit->pPrior = pPrior; + pPrior->pNext = pSplit; + sqlite3ExprListDelete(db, pPrior->pOrderBy); + pPrior->pOrderBy = 0; /*** TBD: Insert subroutine calls to close cursors on incomplete **** subqueries ****/ @@ -124714,13 +144167,42 @@ static int multiSelectOrderBy( ** ** All references to columns in table iTable are to be replaced by corresponding ** expressions in pEList. +** +** ## About "isOuterJoin": +** +** The isOuterJoin column indicates that the replacement will occur into a +** position in the parent that NULL-able due to an OUTER JOIN. Either the +** target slot in the parent is the right operand of a LEFT JOIN, or one of +** the left operands of a RIGHT JOIN. In either case, we need to potentially +** bypass the substituted expression with OP_IfNullRow. +** +** Suppose the original expression is an integer constant. Even though the table +** has the nullRow flag set, because the expression is an integer constant, +** it will not be NULLed out. So instead, we insert an OP_IfNullRow opcode +** that checks to see if the nullRow flag is set on the table. If the nullRow +** flag is set, then the value in the register is set to NULL and the original +** expression is bypassed. If the nullRow flag is not set, then the original +** expression runs to populate the register. +** +** Example where this is needed: +** +** CREATE TABLE t1(a INTEGER PRIMARY KEY, b INT); +** CREATE TABLE t2(x INT UNIQUE); +** +** SELECT a,b,m,x FROM t1 LEFT JOIN (SELECT 59 AS m,x FROM t2) ON b=x; +** +** When the subquery on the right side of the LEFT JOIN is flattened, we +** have to add OP_IfNullRow in front of the OP_Integer that implements the +** "m" value of the subquery so that a NULL will be loaded instead of 59 +** when processing a non-matched row of the left. */ typedef struct SubstContext { Parse *pParse; /* The parsing context */ int iTable; /* Replace references to this table */ int iNewTable; /* New table number */ - int isLeftJoin; /* Add TK_IF_NULL_ROW opcodes on each replacement */ + int isOuterJoin; /* Add TK_IF_NULL_ROW opcodes on each replacement */ ExprList *pEList; /* Replacement expressions */ + ExprList *pCList; /* Collation sequences for replacement expr */ } SubstContext; /* Forward Declarations */ @@ -124730,13 +144212,13 @@ static void substSelect(SubstContext*, Select*, int); /* ** Scan through the expression pExpr. Replace every reference to ** a column in table number iTable with a copy of the iColumn-th -** entry in pEList. (But leave references to the ROWID column +** entry in pEList. (But leave references to the ROWID column ** unchanged.) ** ** This routine is part of the flattening procedure. A subquery ** whose result set is defined by pEList appears as entry in the ** FROM clause of a SELECT such that the VDBE cursor assigned to that -** FORM clause entry is iTable. This routine makes the necessary +** FORM clause entry is iTable. This routine makes the necessary ** changes to pExpr so that it refers directly to the source table ** of the subquery rather the result set of the subquery. */ @@ -124745,41 +144227,81 @@ static Expr *substExpr( Expr *pExpr /* Expr in which substitution occurs */ ){ if( pExpr==0 ) return 0; - if( ExprHasProperty(pExpr, EP_FromJoin) - && pExpr->iRightJoinTable==pSubst->iTable + if( ExprHasProperty(pExpr, EP_OuterON|EP_InnerON) + && pExpr->w.iJoin==pSubst->iTable ){ - pExpr->iRightJoinTable = pSubst->iNewTable; + testcase( ExprHasProperty(pExpr, EP_InnerON) ); + pExpr->w.iJoin = pSubst->iNewTable; } - if( pExpr->op==TK_COLUMN && pExpr->iTable==pSubst->iTable ){ + if( pExpr->op==TK_COLUMN + && pExpr->iTable==pSubst->iTable + && !ExprHasProperty(pExpr, EP_FixedCol) + ){ +#ifdef SQLITE_ALLOW_ROWID_IN_VIEW if( pExpr->iColumn<0 ){ pExpr->op = TK_NULL; - }else{ + }else +#endif + { Expr *pNew; - Expr *pCopy = pSubst->pEList->a[pExpr->iColumn].pExpr; + int iColumn; + Expr *pCopy; Expr ifNullRow; - assert( pSubst->pEList!=0 && pExpr->iColumnpEList->nExpr ); - assert( pExpr->pLeft==0 && pExpr->pRight==0 ); + iColumn = pExpr->iColumn; + assert( iColumn>=0 ); + assert( pSubst->pEList!=0 && iColumnpEList->nExpr ); + assert( pExpr->pRight==0 ); + pCopy = pSubst->pEList->a[iColumn].pExpr; if( sqlite3ExprIsVector(pCopy) ){ sqlite3VectorErrorMsg(pSubst->pParse, pCopy); }else{ sqlite3 *db = pSubst->pParse->db; - if( pSubst->isLeftJoin && pCopy->op!=TK_COLUMN ){ + if( pSubst->isOuterJoin + && (pCopy->op!=TK_COLUMN || pCopy->iTable!=pSubst->iNewTable) + ){ memset(&ifNullRow, 0, sizeof(ifNullRow)); ifNullRow.op = TK_IF_NULL_ROW; ifNullRow.pLeft = pCopy; ifNullRow.iTable = pSubst->iNewTable; + ifNullRow.iColumn = -99; + ifNullRow.flags = EP_IfNullRow; pCopy = &ifNullRow; } + testcase( ExprHasProperty(pCopy, EP_Subquery) ); pNew = sqlite3ExprDup(db, pCopy, 0); - if( pNew && pSubst->isLeftJoin ){ + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pNew); + return pExpr; + } + if( pSubst->isOuterJoin ){ ExprSetProperty(pNew, EP_CanBeNull); } - if( pNew && ExprHasProperty(pExpr,EP_FromJoin) ){ - pNew->iRightJoinTable = pExpr->iRightJoinTable; - ExprSetProperty(pNew, EP_FromJoin); + if( ExprHasProperty(pExpr,EP_OuterON|EP_InnerON) ){ + sqlite3SetJoinExpr(pNew, pExpr->w.iJoin, + pExpr->flags & (EP_OuterON|EP_InnerON)); } sqlite3ExprDelete(db, pExpr); pExpr = pNew; + if( pExpr->op==TK_TRUEFALSE ){ + pExpr->u.iValue = sqlite3ExprTruthValue(pExpr); + pExpr->op = TK_INTEGER; + ExprSetProperty(pExpr, EP_IntValue); + } + + /* Ensure that the expression now has an implicit collation sequence, + ** just as it did when it was a column of a view or sub-query. */ + { + CollSeq *pNat = sqlite3ExprCollSeq(pSubst->pParse, pExpr); + CollSeq *pColl = sqlite3ExprCollSeq(pSubst->pParse, + pSubst->pCList->a[iColumn].pExpr + ); + if( pNat!=pColl || (pExpr->op!=TK_COLUMN && pExpr->op!=TK_COLLATE) ){ + pExpr = sqlite3ExprAddCollateString(pSubst->pParse, pExpr, + (pColl ? pColl->zName : "BINARY") + ); + } + } + ExprClearProperty(pExpr, EP_Collate); } } }else{ @@ -124788,11 +144310,19 @@ static Expr *substExpr( } pExpr->pLeft = substExpr(pSubst, pExpr->pLeft); pExpr->pRight = substExpr(pSubst, pExpr->pRight); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ substSelect(pSubst, pExpr->x.pSelect, 1); }else{ substExprList(pSubst, pExpr->x.pList); } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + Window *pWin = pExpr->y.pWin; + pWin->pFilter = substExpr(pSubst, pWin->pFilter); + substExprList(pSubst, pWin->pPartition); + substExprList(pSubst, pWin->pOrderBy); + } +#endif } return pExpr; } @@ -124812,7 +144342,7 @@ static void substSelect( int doPrior /* Do substitutes on p->pPrior too */ ){ SrcList *pSrc; - struct SrcList_item *pItem; + SrcItem *pItem; int i; if( !p ) return; do{ @@ -124833,6 +144363,175 @@ static void substSelect( } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ +#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) +/* +** pSelect is a SELECT statement and pSrcItem is one item in the FROM +** clause of that SELECT. +** +** This routine scans the entire SELECT statement and recomputes the +** pSrcItem->colUsed mask. +*/ +static int recomputeColumnsUsedExpr(Walker *pWalker, Expr *pExpr){ + SrcItem *pItem; + if( pExpr->op!=TK_COLUMN ) return WRC_Continue; + pItem = pWalker->u.pSrcItem; + if( pItem->iCursor!=pExpr->iTable ) return WRC_Continue; + if( pExpr->iColumn<0 ) return WRC_Continue; + pItem->colUsed |= sqlite3ExprColUsed(pExpr); + return WRC_Continue; +} +static void recomputeColumnsUsed( + Select *pSelect, /* The complete SELECT statement */ + SrcItem *pSrcItem /* Which FROM clause item to recompute */ +){ + Walker w; + if( NEVER(pSrcItem->pTab==0) ) return; + memset(&w, 0, sizeof(w)); + w.xExprCallback = recomputeColumnsUsedExpr; + w.xSelectCallback = sqlite3SelectWalkNoop; + w.u.pSrcItem = pSrcItem; + pSrcItem->colUsed = 0; + sqlite3WalkSelect(&w, pSelect); +} +#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ + +#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) +/* +** Assign new cursor numbers to each of the items in pSrc. For each +** new cursor number assigned, set an entry in the aCsrMap[] array +** to map the old cursor number to the new: +** +** aCsrMap[iOld+1] = iNew; +** +** The array is guaranteed by the caller to be large enough for all +** existing cursor numbers in pSrc. aCsrMap[0] is the array size. +** +** If pSrc contains any sub-selects, call this routine recursively +** on the FROM clause of each such sub-select, with iExcept set to -1. +*/ +static void srclistRenumberCursors( + Parse *pParse, /* Parse context */ + int *aCsrMap, /* Array to store cursor mappings in */ + SrcList *pSrc, /* FROM clause to renumber */ + int iExcept /* FROM clause item to skip */ +){ + int i; + SrcItem *pItem; + for(i=0, pItem=pSrc->a; inSrc; i++, pItem++){ + if( i!=iExcept ){ + Select *p; + assert( pItem->iCursor < aCsrMap[0] ); + if( !pItem->fg.isRecursive || aCsrMap[pItem->iCursor+1]==0 ){ + aCsrMap[pItem->iCursor+1] = pParse->nTab++; + } + pItem->iCursor = aCsrMap[pItem->iCursor+1]; + for(p=pItem->pSelect; p; p=p->pPrior){ + srclistRenumberCursors(pParse, aCsrMap, p->pSrc, -1); + } + } + } +} + +/* +** *piCursor is a cursor number. Change it if it needs to be mapped. +*/ +static void renumberCursorDoMapping(Walker *pWalker, int *piCursor){ + int *aCsrMap = pWalker->u.aiCol; + int iCsr = *piCursor; + if( iCsr < aCsrMap[0] && aCsrMap[iCsr+1]>0 ){ + *piCursor = aCsrMap[iCsr+1]; + } +} + +/* +** Expression walker callback used by renumberCursors() to update +** Expr objects to match newly assigned cursor numbers. +*/ +static int renumberCursorsCb(Walker *pWalker, Expr *pExpr){ + int op = pExpr->op; + if( op==TK_COLUMN || op==TK_IF_NULL_ROW ){ + renumberCursorDoMapping(pWalker, &pExpr->iTable); + } + if( ExprHasProperty(pExpr, EP_OuterON) ){ + renumberCursorDoMapping(pWalker, &pExpr->w.iJoin); + } + return WRC_Continue; +} + +/* +** Assign a new cursor number to each cursor in the FROM clause (Select.pSrc) +** of the SELECT statement passed as the second argument, and to each +** cursor in the FROM clause of any FROM clause sub-selects, recursively. +** Except, do not assign a new cursor number to the iExcept'th element in +** the FROM clause of (*p). Update all expressions and other references +** to refer to the new cursor numbers. +** +** Argument aCsrMap is an array that may be used for temporary working +** space. Two guarantees are made by the caller: +** +** * the array is larger than the largest cursor number used within the +** select statement passed as an argument, and +** +** * the array entries for all cursor numbers that do *not* appear in +** FROM clauses of the select statement as described above are +** initialized to zero. +*/ +static void renumberCursors( + Parse *pParse, /* Parse context */ + Select *p, /* Select to renumber cursors within */ + int iExcept, /* FROM clause item to skip */ + int *aCsrMap /* Working space */ +){ + Walker w; + srclistRenumberCursors(pParse, aCsrMap, p->pSrc, iExcept); + memset(&w, 0, sizeof(w)); + w.u.aiCol = aCsrMap; + w.xExprCallback = renumberCursorsCb; + w.xSelectCallback = sqlite3SelectWalkNoop; + sqlite3WalkSelect(&w, p); +} +#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ + +/* +** If pSel is not part of a compound SELECT, return a pointer to its +** expression list. Otherwise, return a pointer to the expression list +** of the leftmost SELECT in the compound. +*/ +static ExprList *findLeftmostExprlist(Select *pSel){ + while( pSel->pPrior ){ + pSel = pSel->pPrior; + } + return pSel->pEList; +} + +/* +** Return true if any of the result-set columns in the compound query +** have incompatible affinities on one or more arms of the compound. +*/ +static int compoundHasDifferentAffinities(Select *p){ + int ii; + ExprList *pList; + assert( p!=0 ); + assert( p->pEList!=0 ); + assert( p->pPrior!=0 ); + pList = p->pEList; + for(ii=0; iinExpr; ii++){ + char aff; + Select *pSub1; + assert( pList->a[ii].pExpr!=0 ); + aff = sqlite3ExprAffinity(pList->a[ii].pExpr); + for(pSub1=p->pPrior; pSub1; pSub1=pSub1->pPrior){ + assert( pSub1->pEList!=0 ); + assert( pSub1->pEList->nExpr>ii ); + assert( pSub1->pEList->a[ii].pExpr!=0 ); + if( sqlite3ExprAffinity(pSub1->pEList->a[ii].pExpr)!=aff ){ + return 1; + } + } + } + return 0; +} + #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) /* ** This routine attempts to flatten subqueries as a performance optimization. @@ -124856,7 +144555,7 @@ static void substSelect( ** SELECT x+y AS a FROM t1 WHERE z<100 AND a>5 ** ** The code generated for this simplification gives the same result -** but only has to scan the data once. And because indices might +** but only has to scan the data once. And because indices might ** exist on the table t1, a complete scan of the data might be ** avoided. ** @@ -124877,12 +144576,15 @@ static void substSelect( ** (3a) the subquery may not be a join and ** (3b) the FROM clause of the subquery may not contain a virtual ** table and -** (3c) the outer query may not be an aggregate. +** (**) Was: "The outer query may not have a GROUP BY." This case +** is now managed correctly +** (3d) the outer query may not be DISTINCT. +** See also (26) for restrictions on RIGHT JOIN. ** ** (4) The subquery can not be DISTINCT. ** ** (**) At one point restrictions (4) and (5) defined a subset of DISTINCT -** sub-queries that were excluded from this optimization. Restriction +** sub-queries that were excluded from this optimization. Restriction ** (4) has since been expanded to exclude all DISTINCT subqueries. ** ** (**) We no longer attempt to flatten aggregate subqueries. Was: @@ -124898,8 +144600,8 @@ static void substSelect( ** (9) If the subquery uses LIMIT then the outer query may not be aggregate. ** ** (**) Restriction (10) was removed from the code on 2005-02-05 but we -** accidently carried the comment forward until 2014-09-15. Original -** constraint: "If the subquery is aggregate then the outer query +** accidentally carried the comment forward until 2014-09-15. Original +** constraint: "If the subquery is aggregate then the outer query ** may not use LIMIT." ** ** (11) The subquery and the outer query may not both have ORDER BY clauses. @@ -124917,7 +144619,7 @@ static void substSelect( ** ** (16) If the outer query is aggregate, then the subquery may not ** use ORDER BY. (Ticket #2942) This used to not matter -** until we introduced the group_concat() function. +** until we introduced the group_concat() function. ** ** (17) If the subquery is a compound select, then ** (17a) all compound operators must be a UNION ALL, and @@ -124926,8 +144628,14 @@ static void substSelect( ** (17c) every term within the subquery compound must have a FROM clause ** (17d) the outer query may not be ** (17d1) aggregate, or -** (17d2) DISTINCT, or -** (17d3) a join. +** (17d2) DISTINCT +** (17e) the subquery may not contain window functions, and +** (17f) the subquery must not be the RHS of a LEFT JOIN. +** (17g) either the subquery is the first element of the outer +** query or there are no RIGHT or FULL JOINs in any arm +** of the subquery. (This is a duplicate of condition (27b).) +** (17h) The corresponding result set expressions in all arms of the +** compound must have the same affinity. ** ** The parent and sub-query may contain WHERE clauses. Subject to ** rules (11), (13) and (14), they may also contain ORDER BY, @@ -124943,8 +144651,8 @@ static void substSelect( ** syntax error and return a detailed message. ** ** (18) If the sub-query is a compound select, then all terms of the -** ORDER BY clause of the parent must be simple references to -** columns of the sub-query. +** ORDER BY clause of the parent must be copies of a term returned +** by the parent query. ** ** (19) If the subquery uses LIMIT then the outer query may not ** have a WHERE clause. @@ -124960,18 +144668,33 @@ static void substSelect( ** ** (22) The subquery may not be a recursive CTE. ** -** (**) Subsumed into restriction (17d3). Was: If the outer query is -** a recursive CTE, then the sub-query may not be a compound query. -** This restriction is because transforming the +** (23) If the outer query is a recursive CTE, then the sub-query may not be +** a compound query. This restriction is because transforming the ** parent to a compound query confuses the code that handles ** recursive queries in multiSelect(). ** ** (**) We no longer attempt to flatten aggregate subqueries. Was: -** The subquery may not be an aggregate that uses the built-in min() or +** The subquery may not be an aggregate that uses the built-in min() or ** or max() functions. (Without this restriction, a query like: ** "SELECT x FROM (SELECT max(y), x FROM t1)" would not necessarily ** return the value X for which Y was maximal.) ** +** (25) If either the subquery or the parent query contains a window +** function in the select list or ORDER BY clause, flattening +** is not attempted. +** +** (26) The subquery may not be the right operand of a RIGHT JOIN. +** See also (3) for restrictions on LEFT JOIN. +** +** (27) The subquery may not contain a FULL or RIGHT JOIN unless it +** is the first element of the parent query. Two subcases: +** (27a) the subquery is not a compound query. +** (27b) the subquery is a compound query and the RIGHT JOIN occurs +** in any arm of the compound query. (See also (17g).) +** +** (28) The subquery is not a MATERIALIZED CTE. (This is handled +** in the caller before ever reaching this routine.) +** ** ** In this routine, the "p" parameter is a pointer to the outer query. ** The subquery is p->pSrc->a[iFrom]. isAgg is true if the outer query @@ -124997,11 +144720,13 @@ static int flattenSubquery( SrcList *pSubSrc; /* The FROM clause of the subquery */ int iParent; /* VDBE cursor number of the pSub result set temp table */ int iNewParent = -1;/* Replacement table for iParent */ - int isLeftJoin = 0; /* True if pSub is the right side of a LEFT JOIN */ + int isOuterJoin = 0; /* True if pSub is the right side of a LEFT JOIN */ int i; /* Loop counter */ Expr *pWhere; /* The WHERE clause */ - struct SrcList_item *pSubitem; /* The subquery */ + SrcItem *pSubitem; /* The subquery */ sqlite3 *db = pParse->db; + Walker w; /* Walker to persist agginfo data */ + int *aCsrMap = 0; /* Check to see if flattening is permitted. Return 0 if not. */ @@ -125015,6 +144740,10 @@ static int flattenSubquery( pSub = pSubitem->pSelect; assert( pSub!=0 ); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( p->pWin || pSub->pWin ) return 0; /* Restriction (25) */ +#endif + pSubSrc = pSub->pSrc; assert( pSubSrc ); /* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants, @@ -125057,29 +144786,26 @@ static int flattenSubquery( ** ** which is not at all the same thing. ** - ** If the subquery is the right operand of a LEFT JOIN, then the outer - ** query cannot be an aggregate. (3c) This is an artifact of the way - ** aggregates are processed - there is no mechanism to determine if - ** the LEFT JOIN table should be all-NULL. - ** ** See also tickets #306, #350, and #3300. */ - if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){ - isLeftJoin = 1; - if( pSubSrc->nSrc>1 || isAgg || IsVirtual(pSubSrc->a[0].pTab) ){ - /* (3a) (3c) (3b) */ + if( (pSubitem->fg.jointype & (JT_OUTER|JT_LTORJ))!=0 ){ + if( pSubSrc->nSrc>1 /* (3a) */ + || IsVirtual(pSubSrc->a[0].pTab) /* (3b) */ + || (p->selFlags & SF_Distinct)!=0 /* (3d) */ + || (pSubitem->fg.jointype & JT_RIGHT)!=0 /* (26) */ + ){ return 0; } + isOuterJoin = 1; } -#ifdef SQLITE_EXTRA_IFNULLROW - else if( iFrom>0 && !isAgg ){ - /* Setting isLeftJoin to -1 causes OP_IfNullRow opcodes to be generated for - ** every reference to any result column from subquery in a join, even - ** though they are not necessary. This will stress-test the OP_IfNullRow - ** opcode. */ - isLeftJoin = -1; + + assert( pSubSrc->nSrc>0 ); /* True by restriction (7) */ + if( iFrom>0 && (pSubSrc->a[0].fg.jointype & JT_LTORJ)!=0 ){ + return 0; /* Restriction (27a) */ } -#endif + + /* Condition (28) is blocked by the caller */ + assert( !pSubitem->fg.isCte || pSubitem->u2.pCteUse->eM10d!=M10d_Yes ); /* Restriction (17): If the sub-query is a compound SELECT, then it must ** use only the UNION ALL operator. And none of the simple select queries @@ -125087,46 +144813,61 @@ static int flattenSubquery( ** queries. */ if( pSub->pPrior ){ + int ii; if( pSub->pOrderBy ){ return 0; /* Restriction (20) */ } - if( isAgg || (p->selFlags & SF_Distinct)!=0 || pSrc->nSrc!=1 ){ - return 0; /* (17d1), (17d2), or (17d3) */ + if( isAgg || (p->selFlags & SF_Distinct)!=0 || isOuterJoin>0 ){ + return 0; /* (17d1), (17d2), or (17f) */ } for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){ testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ); testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate ); assert( pSub->pSrc!=0 ); + assert( (pSub->selFlags & SF_Recursive)==0 ); assert( pSub->pEList->nExpr==pSub1->pEList->nExpr ); if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0 /* (17b) */ || (pSub1->pPrior && pSub1->op!=TK_ALL) /* (17a) */ || pSub1->pSrc->nSrc<1 /* (17c) */ +#ifndef SQLITE_OMIT_WINDOWFUNC + || pSub1->pWin /* (17e) */ +#endif ){ return 0; } + if( iFrom>0 && (pSub1->pSrc->a[0].fg.jointype & JT_LTORJ)!=0 ){ + /* Without this restriction, the JT_LTORJ flag would end up being + ** omitted on left-hand tables of the right join that is being + ** flattened. */ + return 0; /* Restrictions (17g), (27b) */ + } testcase( pSub1->pSrc->nSrc>1 ); } /* Restriction (18). */ if( p->pOrderBy ){ - int ii; for(ii=0; iipOrderBy->nExpr; ii++){ if( p->pOrderBy->a[ii].u.x.iOrderByCol==0 ) return 0; } } + + /* Restriction (23) */ + if( (p->selFlags & SF_Recursive) ) return 0; + + /* Restriction (17h) */ + if( compoundHasDifferentAffinities(pSub) ) return 0; + + if( pSrc->nSrc>1 ){ + if( pParse->nSelect>500 ) return 0; + if( OptimizationDisabled(db, SQLITE_FlttnUnionAll) ) return 0; + aCsrMap = sqlite3DbMallocZero(db, ((i64)pParse->nTab+1)*sizeof(int)); + if( aCsrMap ) aCsrMap[0] = pParse->nTab; + } } - /* Ex-restriction (23): - ** The only way that the recursive part of a CTE can contain a compound - ** subquery is for the subquery to be one term of a join. But if the - ** subquery is a join, then the flattening has already been stopped by - ** restriction (17d3) - */ - assert( (p->selFlags & SF_Recursive)==0 || pSub->pPrior==0 ); - /***** If we reach this point, flattening is permitted. *****/ - SELECTTRACE(1,pParse,p,("flatten %s.%p from term %d\n", - pSub->zSelName, pSub, iFrom)); + TREETRACE(0x4,pParse,p,("flatten %u.%p from term %d\n", + pSub->selId, pSub, iFrom)); /* Authorize the subquery */ pParse->zAuthContext = pSubitem->zName; @@ -125134,14 +144875,25 @@ static int flattenSubquery( testcase( i==SQLITE_DENY ); pParse->zAuthContext = zSavedAuthContext; + /* Delete the transient structures associated with the subquery */ + pSub1 = pSubitem->pSelect; + sqlite3DbFree(db, pSubitem->zDatabase); + sqlite3DbFree(db, pSubitem->zName); + sqlite3DbFree(db, pSubitem->zAlias); + pSubitem->zDatabase = 0; + pSubitem->zName = 0; + pSubitem->zAlias = 0; + pSubitem->pSelect = 0; + assert( pSubitem->fg.isUsing!=0 || pSubitem->u3.pOn==0 ); + /* If the sub-query is a compound SELECT statement, then (by restrictions - ** 17 and 18 above) it must be a UNION ALL and the parent query must + ** 17 and 18 above) it must be a UNION ALL and the parent query must ** be of the form: ** - ** SELECT FROM () + ** SELECT FROM () ** ** followed by any ORDER BY, LIMIT and/or OFFSET clauses. This block - ** creates N-1 copies of the parent query without any ORDER BY, LIMIT or + ** creates N-1 copies of the parent query without any ORDER BY, LIMIT or ** OFFSET clauses and joins them to the left-hand-side of the original ** using UNION ALL operators. In this case N is the number of simple ** select statements in the compound sub-query. @@ -125172,44 +144924,37 @@ static int flattenSubquery( ExprList *pOrderBy = p->pOrderBy; Expr *pLimit = p->pLimit; Select *pPrior = p->pPrior; + Table *pItemTab = pSubitem->pTab; + pSubitem->pTab = 0; p->pOrderBy = 0; - p->pSrc = 0; p->pPrior = 0; p->pLimit = 0; pNew = sqlite3SelectDup(db, p, 0); - sqlite3SelectSetName(pNew, pSub->zSelName); p->pLimit = pLimit; p->pOrderBy = pOrderBy; - p->pSrc = pSrc; p->op = TK_ALL; + pSubitem->pTab = pItemTab; if( pNew==0 ){ p->pPrior = pPrior; }else{ + pNew->selId = ++pParse->nSelect; + if( aCsrMap && ALWAYS(db->mallocFailed==0) ){ + renumberCursors(pParse, pNew, iFrom, aCsrMap); + } pNew->pPrior = pPrior; if( pPrior ) pPrior->pNext = pNew; pNew->pNext = p; p->pPrior = pNew; - SELECTTRACE(2,pParse,p,("compound-subquery flattener" - " creates %s.%p as peer\n",pNew->zSelName, pNew)); + TREETRACE(0x4,pParse,p,("compound-subquery flattener" + " creates %u as peer\n",pNew->selId)); } - if( db->mallocFailed ) return 1; + assert( pSubitem->pSelect==0 ); + } + sqlite3DbFree(db, aCsrMap); + if( db->mallocFailed ){ + pSubitem->pSelect = pSub1; + return 1; } - - /* Begin flattening the iFrom-th entry of the FROM clause - ** in the outer query. - */ - pSub = pSub1 = pSubitem->pSelect; - - /* Delete the transient table structure associated with the - ** subquery - */ - sqlite3DbFree(db, pSubitem->zDatabase); - sqlite3DbFree(db, pSubitem->zName); - sqlite3DbFree(db, pSubitem->zAlias); - pSubitem->zDatabase = 0; - pSubitem->zName = 0; - pSubitem->zAlias = 0; - pSubitem->pSelect = 0; /* Defer deleting the Table object associated with the ** subquery until code generation is @@ -125222,8 +144967,10 @@ static int flattenSubquery( Table *pTabToDel = pSubitem->pTab; if( pTabToDel->nTabRef==1 ){ Parse *pToplevel = sqlite3ParseToplevel(pParse); - pTabToDel->pNextZombie = pToplevel->pZombieTab; - pToplevel->pZombieTab = pTabToDel; + sqlite3ParserAddCleanup(pToplevel, + (void(*)(sqlite3*,void*))sqlite3DeleteTable, + pTabToDel); + testcase( pToplevel->earlyCleanup ); }else{ pTabToDel->nTabRef--; } @@ -125243,23 +144990,18 @@ static int flattenSubquery( ** those references with expressions that resolve to the subquery FROM ** elements we are now copying in. */ + pSub = pSub1; for(pParent=p; pParent; pParent=pParent->pPrior, pSub=pSub->pPrior){ int nSubSrc; u8 jointype = 0; + u8 ltorj = pSrc->a[iFrom].fg.jointype & JT_LTORJ; + assert( pSub!=0 ); pSubSrc = pSub->pSrc; /* FROM clause of subquery */ nSubSrc = pSubSrc->nSrc; /* Number of terms in subquery FROM clause */ pSrc = pParent->pSrc; /* FROM clause of the outer query */ - if( pSrc ){ - assert( pParent==p ); /* First time through the loop */ - jointype = pSubitem->fg.jointype; - }else{ - assert( pParent!=p ); /* 2nd and subsequent times through the loop */ - pSrc = pParent->pSrc = sqlite3SrcListAppend(db, 0, 0, 0); - if( pSrc==0 ){ - assert( db->mallocFailed ); - break; - } + if( pParent==p ){ + jointype = pSubitem->fg.jointype; /* First time through the loop */ } /* The subquery uses a single slot of the FROM clause of the outer @@ -125278,27 +145020,29 @@ static int flattenSubquery( ** for the two elements in the FROM clause of the subquery. */ if( nSubSrc>1 ){ - pParent->pSrc = pSrc = sqlite3SrcListEnlarge(db, pSrc, nSubSrc-1,iFrom+1); - if( db->mallocFailed ){ - break; - } + pSrc = sqlite3SrcListEnlarge(pParse, pSrc, nSubSrc-1,iFrom+1); + if( pSrc==0 ) break; + pParent->pSrc = pSrc; } /* Transfer the FROM clause terms from the subquery into the ** outer query. */ for(i=0; ia[i+iFrom].pUsing); - assert( pSrc->a[i+iFrom].fg.isTabFunc==0 ); - pSrc->a[i+iFrom] = pSubSrc->a[i]; + SrcItem *pItem = &pSrc->a[i+iFrom]; + if( pItem->fg.isUsing ) sqlite3IdListDelete(db, pItem->u3.pUsing); + assert( pItem->fg.isTabFunc==0 ); + *pItem = pSubSrc->a[i]; + pItem->fg.jointype |= ltorj; iNewParent = pSubSrc->a[i].iCursor; memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i])); } - pSrc->a[iFrom].fg.jointype = jointype; - - /* Now begin substituting subquery result set expressions for + pSrc->a[iFrom].fg.jointype &= JT_LTORJ; + pSrc->a[iFrom].fg.jointype |= jointype | ltorj; + + /* Now begin substituting subquery result set expressions for ** references to the iParent in the outer query. - ** + ** ** Example: ** ** SELECT a+5, b*10 FROM (SELECT x*3 AS a, y+10 AS b FROM t1) WHERE a>b; @@ -125308,12 +145052,12 @@ static int flattenSubquery( ** We look at every expression in the outer query and every place we see ** "a" we substitute "x*3" and every place we see "b" we substitute "y+10". */ - if( pSub->pOrderBy ){ + if( pSub->pOrderBy && (pParent->selFlags & SF_NoopOrderBy)==0 ){ /* At this point, any non-zero iOrderByCol values indicate that the ** ORDER BY column expression is identical to the iOrderByCol'th ** expression returned by SELECT statement pSub. Since these values ** do not necessarily correspond to columns in SELECT statement pParent, - ** zero them before transfering the ORDER BY clause. + ** zero them before transferring the ORDER BY clause. ** ** Not doing this may cause an error if a subsequent call to this ** function attempts to flatten a compound sub-query into pParent @@ -125327,26 +145071,34 @@ static int flattenSubquery( pParent->pOrderBy = pOrderBy; pSub->pOrderBy = 0; } - pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); - if( isLeftJoin>0 ){ - setJoinExpr(pWhere, iNewParent); + pWhere = pSub->pWhere; + pSub->pWhere = 0; + if( isOuterJoin>0 ){ + sqlite3SetJoinExpr(pWhere, iNewParent, EP_OuterON); + } + if( pWhere ){ + if( pParent->pWhere ){ + pParent->pWhere = sqlite3PExpr(pParse, TK_AND, pWhere, pParent->pWhere); + }else{ + pParent->pWhere = pWhere; + } } - pParent->pWhere = sqlite3ExprAnd(db, pWhere, pParent->pWhere); if( db->mallocFailed==0 ){ SubstContext x; x.pParse = pParse; x.iTable = iParent; x.iNewTable = iNewParent; - x.isLeftJoin = isLeftJoin; + x.isOuterJoin = isOuterJoin; x.pEList = pSub->pEList; + x.pCList = findLeftmostExprlist(pSub); substSelect(&x, pParent, 0); } - - /* The flattened query is distinct if either the inner or the - ** outer query is distinct. - */ - pParent->selFlags |= pSub->selFlags & SF_Distinct; - + + /* The flattened query is a compound if either the inner or the + ** outer query is a compound. */ + pParent->selFlags |= pSub->selFlags & SF_Compound; + assert( (pSub->selFlags & SF_Distinct)==0 ); /* restriction (17b) */ + /* ** SELECT ... FROM (SELECT ... LIMIT a OFFSET b) LIMIT x OFFSET y; ** @@ -125357,16 +145109,23 @@ static int flattenSubquery( pParent->pLimit = pSub->pLimit; pSub->pLimit = 0; } + + /* Recompute the SrcItem.colUsed masks for the flattened + ** tables. */ + for(i=0; ia[i+iFrom]); + } } - /* Finially, delete what is left of the subquery and return - ** success. + /* Finally, delete what is left of the subquery and return success. */ + sqlite3AggInfoPersistWalkerInit(&w, pParse); + sqlite3WalkSelect(&w,pSub1); sqlite3SelectDelete(db, pSub1); -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x100 ){ - SELECTTRACE(0x100,pParse,p,("After flattening:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x4 ){ + TREETRACE(0x4,pParse,p,("After flattening:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif @@ -125375,7 +145134,304 @@ static int flattenSubquery( } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ +/* +** A structure to keep track of all of the column values that are fixed to +** a known value due to WHERE clause constraints of the form COLUMN=VALUE. +*/ +typedef struct WhereConst WhereConst; +struct WhereConst { + Parse *pParse; /* Parsing context */ + u8 *pOomFault; /* Pointer to pParse->db->mallocFailed */ + int nConst; /* Number for COLUMN=CONSTANT terms */ + int nChng; /* Number of times a constant is propagated */ + int bHasAffBlob; /* At least one column in apExpr[] as affinity BLOB */ + u32 mExcludeOn; /* Which ON expressions to exclude from considertion. + ** Either EP_OuterON or EP_InnerON|EP_OuterON */ + Expr **apExpr; /* [i*2] is COLUMN and [i*2+1] is VALUE */ +}; +/* +** Add a new entry to the pConst object. Except, do not add duplicate +** pColumn entries. Also, do not add if doing so would not be appropriate. +** +** The caller guarantees the pColumn is a column and pValue is a constant. +** This routine has to do some additional checks before completing the +** insert. +*/ +static void constInsert( + WhereConst *pConst, /* The WhereConst into which we are inserting */ + Expr *pColumn, /* The COLUMN part of the constraint */ + Expr *pValue, /* The VALUE part of the constraint */ + Expr *pExpr /* Overall expression: COLUMN=VALUE or VALUE=COLUMN */ +){ + int i; + assert( pColumn->op==TK_COLUMN ); + assert( sqlite3ExprIsConstant(pValue) ); + + if( ExprHasProperty(pColumn, EP_FixedCol) ) return; + if( sqlite3ExprAffinity(pValue)!=0 ) return; + if( !sqlite3IsBinary(sqlite3ExprCompareCollSeq(pConst->pParse,pExpr)) ){ + return; + } + + /* 2018-10-25 ticket [cf5ed20f] + ** Make sure the same pColumn is not inserted more than once */ + for(i=0; inConst; i++){ + const Expr *pE2 = pConst->apExpr[i*2]; + assert( pE2->op==TK_COLUMN ); + if( pE2->iTable==pColumn->iTable + && pE2->iColumn==pColumn->iColumn + ){ + return; /* Already present. Return without doing anything. */ + } + } + if( sqlite3ExprAffinity(pColumn)==SQLITE_AFF_BLOB ){ + pConst->bHasAffBlob = 1; + } + + pConst->nConst++; + pConst->apExpr = sqlite3DbReallocOrFree(pConst->pParse->db, pConst->apExpr, + pConst->nConst*2*sizeof(Expr*)); + if( pConst->apExpr==0 ){ + pConst->nConst = 0; + }else{ + pConst->apExpr[pConst->nConst*2-2] = pColumn; + pConst->apExpr[pConst->nConst*2-1] = pValue; + } +} + +/* +** Find all terms of COLUMN=VALUE or VALUE=COLUMN in pExpr where VALUE +** is a constant expression and where the term must be true because it +** is part of the AND-connected terms of the expression. For each term +** found, add it to the pConst structure. +*/ +static void findConstInWhere(WhereConst *pConst, Expr *pExpr){ + Expr *pRight, *pLeft; + if( NEVER(pExpr==0) ) return; + if( ExprHasProperty(pExpr, pConst->mExcludeOn) ){ + testcase( ExprHasProperty(pExpr, EP_OuterON) ); + testcase( ExprHasProperty(pExpr, EP_InnerON) ); + return; + } + if( pExpr->op==TK_AND ){ + findConstInWhere(pConst, pExpr->pRight); + findConstInWhere(pConst, pExpr->pLeft); + return; + } + if( pExpr->op!=TK_EQ ) return; + pRight = pExpr->pRight; + pLeft = pExpr->pLeft; + assert( pRight!=0 ); + assert( pLeft!=0 ); + if( pRight->op==TK_COLUMN && sqlite3ExprIsConstant(pLeft) ){ + constInsert(pConst,pRight,pLeft,pExpr); + } + if( pLeft->op==TK_COLUMN && sqlite3ExprIsConstant(pRight) ){ + constInsert(pConst,pLeft,pRight,pExpr); + } +} + +/* +** This is a helper function for Walker callback propagateConstantExprRewrite(). +** +** Argument pExpr is a candidate expression to be replaced by a value. If +** pExpr is equivalent to one of the columns named in pWalker->u.pConst, +** then overwrite it with the corresponding value. Except, do not do so +** if argument bIgnoreAffBlob is non-zero and the affinity of pExpr +** is SQLITE_AFF_BLOB. +*/ +static int propagateConstantExprRewriteOne( + WhereConst *pConst, + Expr *pExpr, + int bIgnoreAffBlob +){ + int i; + if( pConst->pOomFault[0] ) return WRC_Prune; + if( pExpr->op!=TK_COLUMN ) return WRC_Continue; + if( ExprHasProperty(pExpr, EP_FixedCol|pConst->mExcludeOn) ){ + testcase( ExprHasProperty(pExpr, EP_FixedCol) ); + testcase( ExprHasProperty(pExpr, EP_OuterON) ); + testcase( ExprHasProperty(pExpr, EP_InnerON) ); + return WRC_Continue; + } + for(i=0; inConst; i++){ + Expr *pColumn = pConst->apExpr[i*2]; + if( pColumn==pExpr ) continue; + if( pColumn->iTable!=pExpr->iTable ) continue; + if( pColumn->iColumn!=pExpr->iColumn ) continue; + if( bIgnoreAffBlob && sqlite3ExprAffinity(pColumn)==SQLITE_AFF_BLOB ){ + break; + } + /* A match is found. Add the EP_FixedCol property */ + pConst->nChng++; + ExprClearProperty(pExpr, EP_Leaf); + ExprSetProperty(pExpr, EP_FixedCol); + assert( pExpr->pLeft==0 ); + pExpr->pLeft = sqlite3ExprDup(pConst->pParse->db, pConst->apExpr[i*2+1], 0); + if( pConst->pParse->db->mallocFailed ) return WRC_Prune; + break; + } + return WRC_Prune; +} + +/* +** This is a Walker expression callback. pExpr is a node from the WHERE +** clause of a SELECT statement. This function examines pExpr to see if +** any substitutions based on the contents of pWalker->u.pConst should +** be made to pExpr or its immediate children. +** +** A substitution is made if: +** +** + pExpr is a column with an affinity other than BLOB that matches +** one of the columns in pWalker->u.pConst, or +** +** + pExpr is a binary comparison operator (=, <=, >=, <, >) that +** uses an affinity other than TEXT and one of its immediate +** children is a column that matches one of the columns in +** pWalker->u.pConst. +*/ +static int propagateConstantExprRewrite(Walker *pWalker, Expr *pExpr){ + WhereConst *pConst = pWalker->u.pConst; + assert( TK_GT==TK_EQ+1 ); + assert( TK_LE==TK_EQ+2 ); + assert( TK_LT==TK_EQ+3 ); + assert( TK_GE==TK_EQ+4 ); + if( pConst->bHasAffBlob ){ + if( (pExpr->op>=TK_EQ && pExpr->op<=TK_GE) + || pExpr->op==TK_IS + ){ + propagateConstantExprRewriteOne(pConst, pExpr->pLeft, 0); + if( pConst->pOomFault[0] ) return WRC_Prune; + if( sqlite3ExprAffinity(pExpr->pLeft)!=SQLITE_AFF_TEXT ){ + propagateConstantExprRewriteOne(pConst, pExpr->pRight, 0); + } + } + } + return propagateConstantExprRewriteOne(pConst, pExpr, pConst->bHasAffBlob); +} + +/* +** The WHERE-clause constant propagation optimization. +** +** If the WHERE clause contains terms of the form COLUMN=CONSTANT or +** CONSTANT=COLUMN that are top-level AND-connected terms that are not +** part of a ON clause from a LEFT JOIN, then throughout the query +** replace all other occurrences of COLUMN with CONSTANT. +** +** For example, the query: +** +** SELECT * FROM t1, t2, t3 WHERE t1.a=39 AND t2.b=t1.a AND t3.c=t2.b +** +** Is transformed into +** +** SELECT * FROM t1, t2, t3 WHERE t1.a=39 AND t2.b=39 AND t3.c=39 +** +** Return true if any transformations where made and false if not. +** +** Implementation note: Constant propagation is tricky due to affinity +** and collating sequence interactions. Consider this example: +** +** CREATE TABLE t1(a INT,b TEXT); +** INSERT INTO t1 VALUES(123,'0123'); +** SELECT * FROM t1 WHERE a=123 AND b=a; +** SELECT * FROM t1 WHERE a=123 AND b=123; +** +** The two SELECT statements above should return different answers. b=a +** is always true because the comparison uses numeric affinity, but b=123 +** is false because it uses text affinity and '0123' is not the same as '123'. +** To work around this, the expression tree is not actually changed from +** "b=a" to "b=123" but rather the "a" in "b=a" is tagged with EP_FixedCol +** and the "123" value is hung off of the pLeft pointer. Code generator +** routines know to generate the constant "123" instead of looking up the +** column value. Also, to avoid collation problems, this optimization is +** only attempted if the "a=123" term uses the default BINARY collation. +** +** 2021-05-25 forum post 6a06202608: Another troublesome case is... +** +** CREATE TABLE t1(x); +** INSERT INTO t1 VALUES(10.0); +** SELECT 1 FROM t1 WHERE x=10 AND x LIKE 10; +** +** The query should return no rows, because the t1.x value is '10.0' not '10' +** and '10.0' is not LIKE '10'. But if we are not careful, the first WHERE +** term "x=10" will cause the second WHERE term to become "10 LIKE 10", +** resulting in a false positive. To avoid this, constant propagation for +** columns with BLOB affinity is only allowed if the constant is used with +** operators ==, <=, <, >=, >, or IS in a way that will cause the correct +** type conversions to occur. See logic associated with the bHasAffBlob flag +** for details. +*/ +static int propagateConstants( + Parse *pParse, /* The parsing context */ + Select *p /* The query in which to propagate constants */ +){ + WhereConst x; + Walker w; + int nChng = 0; + x.pParse = pParse; + x.pOomFault = &pParse->db->mallocFailed; + do{ + x.nConst = 0; + x.nChng = 0; + x.apExpr = 0; + x.bHasAffBlob = 0; + if( ALWAYS(p->pSrc!=0) + && p->pSrc->nSrc>0 + && (p->pSrc->a[0].fg.jointype & JT_LTORJ)!=0 + ){ + /* Do not propagate constants on any ON clause if there is a + ** RIGHT JOIN anywhere in the query */ + x.mExcludeOn = EP_InnerON | EP_OuterON; + }else{ + /* Do not propagate constants through the ON clause of a LEFT JOIN */ + x.mExcludeOn = EP_OuterON; + } + findConstInWhere(&x, p->pWhere); + if( x.nConst ){ + memset(&w, 0, sizeof(w)); + w.pParse = pParse; + w.xExprCallback = propagateConstantExprRewrite; + w.xSelectCallback = sqlite3SelectWalkNoop; + w.xSelectCallback2 = 0; + w.walkerDepth = 0; + w.u.pConst = &x; + sqlite3WalkExpr(&w, p->pWhere); + sqlite3DbFree(x.pParse->db, x.apExpr); + nChng += x.nChng; + } + }while( x.nChng ); + return nChng; +} + +#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) +# if !defined(SQLITE_OMIT_WINDOWFUNC) +/* +** This function is called to determine whether or not it is safe to +** push WHERE clause expression pExpr down to FROM clause sub-query +** pSubq, which contains at least one window function. Return 1 +** if it is safe and the expression should be pushed down, or 0 +** otherwise. +** +** It is only safe to push the expression down if it consists only +** of constants and copies of expressions that appear in the PARTITION +** BY clause of all window function used by the sub-query. It is safe +** to filter out entire partitions, but not rows within partitions, as +** this may change the results of the window functions. +** +** At the time this function is called it is guaranteed that +** +** * the sub-query uses only one distinct window frame, and +** * that the window frame has a PARTITION BY clause. +*/ +static int pushDownWindowCheck(Parse *pParse, Select *pSubq, Expr *pExpr){ + assert( pSubq->pWin->pPartition ); + assert( (pSubq->selFlags & SF_MultiPart)==0 ); + assert( pSubq->pPrior==0 ); + return sqlite3ExprIsConstantOrGroupBy(pParse, pExpr, pSubq->pWin->pPartition); +} +# endif /* SQLITE_OMIT_WINDOWFUNC */ +#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) /* @@ -125405,7 +145461,7 @@ static int flattenSubquery( ** (2) The inner query is the recursive part of a common table expression. ** ** (3) The inner query has a LIMIT clause (since the changes to the WHERE -** close would change the meaning of the LIMIT). +** clause would change the meaning of the LIMIT). ** ** (4) The inner query is the right operand of a LEFT JOIN and the ** expression to be pushed down does not come from the ON clause @@ -125424,6 +145480,48 @@ static int flattenSubquery( ** But if the (b2=2) term were to be pushed down into the bb subquery, ** then the (1,1,NULL) row would be suppressed. ** +** (6) Window functions make things tricky as changes to the WHERE clause +** of the inner query could change the window over which window +** functions are calculated. Therefore, do not attempt the optimization +** if: +** +** (6a) The inner query uses multiple incompatible window partitions. +** +** (6b) The inner query is a compound and uses window-functions. +** +** (6c) The WHERE clause does not consist entirely of constants and +** copies of expressions found in the PARTITION BY clause of +** all window-functions used by the sub-query. It is safe to +** filter out entire partitions, as this does not change the +** window over which any window-function is calculated. +** +** (7) The inner query is a Common Table Expression (CTE) that should +** be materialized. (This restriction is implemented in the calling +** routine.) +** +** (8) If the subquery is a compound that uses UNION, INTERSECT, +** or EXCEPT, then all of the result set columns for all arms of +** the compound must use the BINARY collating sequence. +** +** (9) All three of the following are true: +** +** (9a) The WHERE clause expression originates in the ON or USING clause +** of a join (either an INNER or an OUTER join), and +** +** (9b) The subquery is to the right of the ON/USING clause +** +** (9c) There is a RIGHT JOIN (or FULL JOIN) in between the ON/USING +** clause and the subquery. +** +** Without this restriction, the push-down optimization might move +** the ON/USING filter expression from the left side of a RIGHT JOIN +** over to the right side, which leads to incorrect answers. See +** also restriction (6) in sqlite3ExprIsSingleTableConstraint(). +** +** (10) The inner query is not the right-hand table of a RIGHT JOIN. +** +** (11) The subquery is not a VALUES clause +** ** Return 0 if no changes are made and non-zero if one or more WHERE clause ** terms are duplicated into the subquery. */ @@ -125431,13 +145529,56 @@ static int pushDownWhereTerms( Parse *pParse, /* Parse context (for malloc() and error reporting) */ Select *pSubq, /* The subquery whose WHERE clause is to be augmented */ Expr *pWhere, /* The WHERE clause of the outer query */ - int iCursor, /* Cursor number of the subquery */ - int isLeftJoin /* True if pSubq is the right term of a LEFT JOIN */ + SrcList *pSrcList, /* The complete from clause of the outer query */ + int iSrc /* Which FROM clause term to try to push into */ ){ Expr *pNew; + SrcItem *pSrc; /* The subquery FROM term into which WHERE is pushed */ int nChng = 0; + pSrc = &pSrcList->a[iSrc]; if( pWhere==0 ) return 0; - if( pSubq->selFlags & SF_Recursive ) return 0; /* restriction (2) */ + if( pSubq->selFlags & (SF_Recursive|SF_MultiPart) ){ + return 0; /* restrictions (2) and (11) */ + } + if( pSrc->fg.jointype & (JT_LTORJ|JT_RIGHT) ){ + return 0; /* restrictions (10) */ + } + + if( pSubq->pPrior ){ + Select *pSel; + int notUnionAll = 0; + for(pSel=pSubq; pSel; pSel=pSel->pPrior){ + u8 op = pSel->op; + assert( op==TK_ALL || op==TK_SELECT + || op==TK_UNION || op==TK_INTERSECT || op==TK_EXCEPT ); + if( op!=TK_ALL && op!=TK_SELECT ){ + notUnionAll = 1; + } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pSel->pWin ) return 0; /* restriction (6b) */ +#endif + } + if( notUnionAll ){ + /* If any of the compound arms are connected using UNION, INTERSECT, + ** or EXCEPT, then we must ensure that none of the columns use a + ** non-BINARY collating sequence. */ + for(pSel=pSubq; pSel; pSel=pSel->pPrior){ + int ii; + const ExprList *pList = pSel->pEList; + assert( pList!=0 ); + for(ii=0; iinExpr; ii++){ + CollSeq *pColl = sqlite3ExprCollSeq(pParse, pList->a[ii].pExpr); + if( !sqlite3IsBinary(pColl) ){ + return 0; /* Restriction (8) */ + } + } + } + } + }else{ +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pSubq->pWin && pSubq->pWin->pPartition==0 ) return 0; +#endif + } #ifdef SQLITE_DEBUG /* Only the first term of a compound can have a WITH clause. But make @@ -125445,7 +145586,7 @@ static int pushDownWhereTerms( ** in the future. */ { - Select *pX; + Select *pX; for(pX=pSubq; pX; pX=pX->pPrior){ assert( (pX->selFlags & (SF_Recursive))==0 ); } @@ -125456,35 +145597,67 @@ static int pushDownWhereTerms( return 0; /* restriction (3) */ } while( pWhere->op==TK_AND ){ - nChng += pushDownWhereTerms(pParse, pSubq, pWhere->pRight, - iCursor, isLeftJoin); + nChng += pushDownWhereTerms(pParse, pSubq, pWhere->pRight, pSrcList, iSrc); pWhere = pWhere->pLeft; } + +#if 0 /* These checks now done by sqlite3ExprIsSingleTableConstraint() */ + if( ExprHasProperty(pWhere, EP_OuterON|EP_InnerON) /* (9a) */ + && (pSrcList->a[0].fg.jointype & JT_LTORJ)!=0 /* Fast pre-test of (9c) */ + ){ + int jj; + for(jj=0; jjw.iJoin==pSrcList->a[jj].iCursor ){ + /* If we reach this point, both (9a) and (9b) are satisfied. + ** The following loop checks (9c): + */ + for(jj++; jja[jj].fg.jointype & JT_RIGHT)!=0 ){ + return 0; /* restriction (9) */ + } + } + } + } + } if( isLeftJoin - && (ExprHasProperty(pWhere,EP_FromJoin)==0 - || pWhere->iRightJoinTable!=iCursor) + && (ExprHasProperty(pWhere,EP_OuterON)==0 + || pWhere->w.iJoin!=iCursor) ){ return 0; /* restriction (4) */ } - if( ExprHasProperty(pWhere,EP_FromJoin) && pWhere->iRightJoinTable!=iCursor ){ + if( ExprHasProperty(pWhere,EP_OuterON) + && pWhere->w.iJoin!=iCursor + ){ return 0; /* restriction (5) */ } - if( sqlite3ExprIsTableConstant(pWhere, iCursor) ){ +#endif + + if( sqlite3ExprIsSingleTableConstraint(pWhere, pSrcList, iSrc) ){ nChng++; + pSubq->selFlags |= SF_PushDown; while( pSubq ){ SubstContext x; pNew = sqlite3ExprDup(pParse->db, pWhere, 0); - unsetJoinExpr(pNew, -1); + unsetJoinExpr(pNew, -1, 1); x.pParse = pParse; - x.iTable = iCursor; - x.iNewTable = iCursor; - x.isLeftJoin = 0; + x.iTable = pSrc->iCursor; + x.iNewTable = pSrc->iCursor; + x.isOuterJoin = 0; x.pEList = pSubq->pEList; + x.pCList = findLeftmostExprlist(pSubq); pNew = substExpr(&x, pNew); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pSubq->pWin && 0==pushDownWindowCheck(pParse, pSubq, pNew) ){ + /* Restriction 6c has prevented push-down in this case */ + sqlite3ExprDelete(pParse->db, pNew); + nChng--; + break; + } +#endif if( pSubq->selFlags & SF_Aggregate ){ - pSubq->pHaving = sqlite3ExprAnd(pParse->db, pSubq->pHaving, pNew); + pSubq->pHaving = sqlite3ExprAnd(pParse, pSubq->pHaving, pNew); }else{ - pSubq->pWhere = sqlite3ExprAnd(pParse->db, pSubq->pWhere, pNew); + pSubq->pWhere = sqlite3ExprAnd(pParse, pSubq->pWhere, pNew); } pSubq = pSubq->pPrior; } @@ -125493,9 +145666,81 @@ static int pushDownWhereTerms( } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ +/* +** Check to see if a subquery contains result-set columns that are +** never used. If it does, change the value of those result-set columns +** to NULL so that they do not cause unnecessary work to compute. +** +** Return the number of column that were changed to NULL. +*/ +static int disableUnusedSubqueryResultColumns(SrcItem *pItem){ + int nCol; + Select *pSub; /* The subquery to be simplified */ + Select *pX; /* For looping over compound elements of pSub */ + Table *pTab; /* The table that describes the subquery */ + int j; /* Column number */ + int nChng = 0; /* Number of columns converted to NULL */ + Bitmask colUsed; /* Columns that may not be NULLed out */ + + assert( pItem!=0 ); + if( pItem->fg.isCorrelated || pItem->fg.isCte ){ + return 0; + } + assert( pItem->pTab!=0 ); + pTab = pItem->pTab; + assert( pItem->pSelect!=0 ); + pSub = pItem->pSelect; + assert( pSub->pEList->nExpr==pTab->nCol ); + if( (pSub->selFlags & (SF_Distinct|SF_Aggregate))!=0 ){ + testcase( pSub->selFlags & SF_Distinct ); + testcase( pSub->selFlags & SF_Aggregate ); + return 0; + } + for(pX=pSub; pX; pX=pX->pPrior){ + if( pX->pPrior && pX->op!=TK_ALL ){ + /* This optimization does not work for compound subqueries that + ** use UNION, INTERSECT, or EXCEPT. Only UNION ALL is allowed. */ + return 0; + } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pX->pWin ){ + /* This optimization does not work for subqueries that use window + ** functions. */ + return 0; + } +#endif + } + colUsed = pItem->colUsed; + if( pSub->pOrderBy ){ + ExprList *pList = pSub->pOrderBy; + for(j=0; jnExpr; j++){ + u16 iCol = pList->a[j].u.x.iOrderByCol; + if( iCol>0 ){ + iCol--; + colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol); + } + } + } + nCol = pTab->nCol; + for(j=0; jpPrior) { + Expr *pY = pX->pEList->a[j].pExpr; + if( pY->op==TK_NULL ) continue; + pY->op = TK_NULL; + ExprClearProperty(pY, EP_Skip|EP_Unlikely); + pX->selFlags |= SF_PushDown; + nChng++; + } + } + return nChng; +} + + /* ** The pFunc is the only aggregate function in the query. Check to see -** if the query is a candidate for the min/max optimization. +** if the query is a candidate for the min/max optimization. ** ** If the query is a candidate for the min/max optimization, then set ** *ppMinMax to be an ORDER BY clause to be used for the optimization @@ -125511,40 +145756,58 @@ static int pushDownWhereTerms( */ static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){ int eRet = WHERE_ORDERBY_NORMAL; /* Return value */ - ExprList *pEList = pFunc->x.pList; /* Arguments to agg function */ + ExprList *pEList; /* Arguments to agg function */ const char *zFunc; /* Name of aggregate function pFunc */ ExprList *pOrderBy; - u8 sortOrder; + u8 sortFlags = 0; assert( *ppMinMax==0 ); assert( pFunc->op==TK_AGG_FUNCTION ); - if( pEList==0 || pEList->nExpr!=1 ) return eRet; + assert( !IsWindowFunc(pFunc) ); + assert( ExprUseXList(pFunc) ); + pEList = pFunc->x.pList; + if( pEList==0 + || pEList->nExpr!=1 + || ExprHasProperty(pFunc, EP_WinFunc) + || OptimizationDisabled(db, SQLITE_MinMaxOpt) + ){ + return eRet; + } + assert( !ExprHasProperty(pFunc, EP_IntValue) ); zFunc = pFunc->u.zToken; if( sqlite3StrICmp(zFunc, "min")==0 ){ eRet = WHERE_ORDERBY_MIN; - sortOrder = SQLITE_SO_ASC; + if( sqlite3ExprCanBeNull(pEList->a[0].pExpr) ){ + sortFlags = KEYINFO_ORDER_BIGNULL; + } }else if( sqlite3StrICmp(zFunc, "max")==0 ){ eRet = WHERE_ORDERBY_MAX; - sortOrder = SQLITE_SO_DESC; + sortFlags = KEYINFO_ORDER_DESC; }else{ return eRet; } *ppMinMax = pOrderBy = sqlite3ExprListDup(db, pEList, 0); assert( pOrderBy!=0 || db->mallocFailed ); - if( pOrderBy ) pOrderBy->a[0].sortOrder = sortOrder; + if( pOrderBy ) pOrderBy->a[0].fg.sortFlags = sortFlags; return eRet; } /* ** The select statement passed as the first argument is an aggregate query. -** The second argument is the associated aggregate-info object. This +** The second argument is the associated aggregate-info object. This ** function tests if the SELECT is of the form: ** ** SELECT count(*) FROM ** ** where table is a database table, not a sub-select or view. If the query ** does match this pattern, then a pointer to the Table object representing -** is returned. Otherwise, 0 is returned. +** is returned. Otherwise, NULL is returned. +** +** This routine checks to see if it is safe to use the count optimization. +** A correct answer is still obtained (though perhaps more slowly) if +** this routine returns NULL when it could have returned a table pointer. +** But returning the pointer when NULL should have been returned can +** result in incorrect answers and/or crashes. So, when in doubt, return NULL. */ static Table *isSimpleCount(Select *p, AggInfo *pAggInfo){ Table *pTab; @@ -125552,20 +145815,28 @@ static Table *isSimpleCount(Select *p, AggInfo *pAggInfo){ assert( !p->pGroupBy ); - if( p->pWhere || p->pEList->nExpr!=1 - || p->pSrc->nSrc!=1 || p->pSrc->a[0].pSelect + if( p->pWhere + || p->pEList->nExpr!=1 + || p->pSrc->nSrc!=1 + || p->pSrc->a[0].pSelect + || pAggInfo->nFunc!=1 + || p->pHaving ){ return 0; } pTab = p->pSrc->a[0].pTab; + assert( pTab!=0 ); + assert( !IsView(pTab) ); + if( !IsOrdinaryTable(pTab) ) return 0; pExpr = p->pEList->a[0].pExpr; - assert( pTab && !pTab->pSelect && pExpr ); - - if( IsVirtual(pTab) ) return 0; + assert( pExpr!=0 ); if( pExpr->op!=TK_AGG_FUNCTION ) return 0; - if( NEVER(pAggInfo->nFunc==0) ) return 0; + if( pExpr->pAggInfo!=pAggInfo ) return 0; if( (pAggInfo->aFunc[0].pFunc->funcFlags&SQLITE_FUNC_COUNT)==0 ) return 0; - if( pExpr->flags&EP_Distinct ) return 0; + assert( pAggInfo->aFunc[0].pFExpr==pExpr ); + testcase( ExprHasProperty(pExpr, EP_Distinct) ); + testcase( ExprHasProperty(pExpr, EP_WinFunc) ); + if( ExprHasProperty(pExpr, EP_Distinct|EP_WinFunc) ) return 0; return pTab; } @@ -125573,30 +145844,33 @@ static Table *isSimpleCount(Select *p, AggInfo *pAggInfo){ /* ** If the source-list item passed as an argument was augmented with an ** INDEXED BY clause, then try to locate the specified index. If there -** was such a clause and the named index cannot be found, return -** SQLITE_ERROR and leave an error in pParse. Otherwise, populate +** was such a clause and the named index cannot be found, return +** SQLITE_ERROR and leave an error in pParse. Otherwise, populate ** pFrom->pIndex and return SQLITE_OK. */ -SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){ - if( pFrom->pTab && pFrom->fg.isIndexedBy ){ - Table *pTab = pFrom->pTab; - char *zIndexedBy = pFrom->u1.zIndexedBy; - Index *pIdx; - for(pIdx=pTab->pIndex; - pIdx && sqlite3StrICmp(pIdx->zName, zIndexedBy); - pIdx=pIdx->pNext - ); - if( !pIdx ){ - sqlite3ErrorMsg(pParse, "no such index: %s", zIndexedBy, 0); - pParse->checkSchema = 1; - return SQLITE_ERROR; - } - pFrom->pIBIndex = pIdx; +SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *pParse, SrcItem *pFrom){ + Table *pTab = pFrom->pTab; + char *zIndexedBy = pFrom->u1.zIndexedBy; + Index *pIdx; + assert( pTab!=0 ); + assert( pFrom->fg.isIndexedBy!=0 ); + + for(pIdx=pTab->pIndex; + pIdx && sqlite3StrICmp(pIdx->zName, zIndexedBy); + pIdx=pIdx->pNext + ); + if( !pIdx ){ + sqlite3ErrorMsg(pParse, "no such index: %s", zIndexedBy, 0); + pParse->checkSchema = 1; + return SQLITE_ERROR; } + assert( pFrom->fg.isCte==0 ); + pFrom->u2.pIBIndex = pIdx; return SQLITE_OK; } + /* -** Detect compound SELECT statements that use an ORDER BY clause with +** Detect compound SELECT statements that use an ORDER BY clause with ** an alternative collating sequence. ** ** SELECT ... FROM t1 EXCEPT SELECT ... FROM t2 ORDER BY .. COLLATE ... @@ -125631,6 +145905,14 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ for(pX=p; pX && (pX->op==TK_ALL || pX->op==TK_SELECT); pX=pX->pPrior){} if( pX==0 ) return WRC_Continue; a = p->pOrderBy->a; +#ifndef SQLITE_OMIT_WINDOWFUNC + /* If iOrderByCol is already non-zero, then it has already been matched + ** to a result column of the SELECT statement. This occurs when the + ** SELECT is rewritten for window-functions processing and then passed + ** to sqlite3SelectPrep() and similar a second time. The rewriting done + ** by this function is not required in this case. */ + if( a[0].u.x.iOrderByCol ) return WRC_Continue; +#endif for(i=p->pOrderBy->nExpr-1; i>=0; i--){ if( a[i].pExpr->flags & EP_Collate ) break; } @@ -125643,7 +145925,7 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ pNew = sqlite3DbMallocZero(db, sizeof(*pNew) ); if( pNew==0 ) return WRC_Abort; memset(&dummy, 0, sizeof(dummy)); - pNewSrc = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&dummy,pNew,0,0); + pNewSrc = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&dummy,pNew,0); if( pNewSrc==0 ) return WRC_Abort; *pNew = *p; p->pSrc = pNewSrc; @@ -125656,6 +145938,9 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ p->pPrior = 0; p->pNext = 0; p->pWith = 0; +#ifndef SQLITE_OMIT_WINDOWFUNC + p->pWinDefn = 0; +#endif p->selFlags &= ~SF_Compound; assert( (p->selFlags & SF_Converted)==0 ); p->selFlags |= SF_Converted; @@ -125670,7 +145955,7 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ ** arguments. If it does, leave an error message in pParse and return ** non-zero, since pFrom is not allowed to be a table-valued function. */ -static int cannotBeFunction(Parse *pParse, struct SrcList_item *pFrom){ +static int cannotBeFunction(Parse *pParse, SrcItem *pFrom){ if( pFrom->fg.isTabFunc ){ sqlite3ErrorMsg(pParse, "'%s' is not a function", pFrom->zName); return 1; @@ -125680,9 +145965,9 @@ static int cannotBeFunction(Parse *pParse, struct SrcList_item *pFrom){ #ifndef SQLITE_OMIT_CTE /* -** Argument pWith (which may be NULL) points to a linked list of nested -** WITH contexts, from inner to outermost. If the table identified by -** FROM clause element pItem is really a common-table-expression (CTE) +** Argument pWith (which may be NULL) points to a linked list of nested +** WITH contexts, from inner to outermost. If the table identified by +** FROM clause element pItem is really a common-table-expression (CTE) ** then return a pointer to the CTE definition for that table. Otherwise ** return NULL. ** @@ -125691,21 +145976,22 @@ static int cannotBeFunction(Parse *pParse, struct SrcList_item *pFrom){ */ static struct Cte *searchWith( With *pWith, /* Current innermost WITH clause */ - struct SrcList_item *pItem, /* FROM clause element to resolve */ + SrcItem *pItem, /* FROM clause element to resolve */ With **ppContext /* OUT: WITH clause return value belongs to */ ){ - const char *zName; - if( pItem->zDatabase==0 && (zName = pItem->zName)!=0 ){ - With *p; - for(p=pWith; p; p=p->pOuter){ - int i; - for(i=0; inCte; i++){ - if( sqlite3StrICmp(zName, p->a[i].zName)==0 ){ - *ppContext = p; - return &p->a[i]; - } + const char *zName = pItem->zName; + With *p; + assert( pItem->zDatabase==0 ); + assert( zName!=0 ); + for(p=pWith; p; p=p->pOuter){ + int i; + for(i=0; inCte; i++){ + if( sqlite3StrICmp(zName, p->a[i].zName)==0 ){ + *ppContext = p; + return &p->a[i]; } } + if( p->bView ) break; } return 0; } @@ -125715,55 +146001,92 @@ static struct Cte *searchWith( ** ** This routine pushes the WITH clause passed as the second argument ** onto the top of the stack. If argument bFree is true, then this -** WITH clause will never be popped from the stack. In this case it -** should be freed along with the Parse object. In other cases, when -** bFree==0, the With object will be freed along with the SELECT +** WITH clause will never be popped from the stack but should instead +** be freed along with the Parse object. In other cases, when +** bFree==0, the With object will be freed along with the SELECT ** statement with which it is associated. +** +** This routine returns a copy of pWith. Or, if bFree is true and +** the pWith object is destroyed immediately due to an OOM condition, +** then this routine return NULL. +** +** If bFree is true, do not continue to use the pWith pointer after +** calling this routine, Instead, use only the return value. */ -SQLITE_PRIVATE void sqlite3WithPush(Parse *pParse, With *pWith, u8 bFree){ - assert( bFree==0 || (pParse->pWith==0 && pParse->pWithToFree==0) ); +SQLITE_PRIVATE With *sqlite3WithPush(Parse *pParse, With *pWith, u8 bFree){ if( pWith ){ - assert( pParse->pWith!=pWith ); - pWith->pOuter = pParse->pWith; - pParse->pWith = pWith; - if( bFree ) pParse->pWithToFree = pWith; + if( bFree ){ + pWith = (With*)sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3WithDelete, + pWith); + if( pWith==0 ) return 0; + } + if( pParse->nErr==0 ){ + assert( pParse->pWith!=pWith ); + pWith->pOuter = pParse->pWith; + pParse->pWith = pWith; + } } + return pWith; } /* -** This function checks if argument pFrom refers to a CTE declared by -** a WITH clause on the stack currently maintained by the parser. And, -** if currently processing a CTE expression, if it is a recursive -** reference to the current CTE. +** This function checks if argument pFrom refers to a CTE declared by +** a WITH clause on the stack currently maintained by the parser (on the +** pParse->pWith linked list). And if currently processing a CTE +** CTE expression, through routine checks to see if the reference is +** a recursive reference to the CTE. ** -** If pFrom falls into either of the two categories above, pFrom->pTab -** and other fields are populated accordingly. The caller should check -** (pFrom->pTab!=0) to determine whether or not a successful match -** was found. +** If pFrom matches a CTE according to either of these two above, pFrom->pTab +** and other fields are populated accordingly. ** -** Whether or not a match is found, SQLITE_OK is returned if no error -** occurs. If an error does occur, an error message is stored in the -** parser and some error code other than SQLITE_OK returned. +** Return 0 if no match is found. +** Return 1 if a match is found. +** Return 2 if an error condition is detected. */ -static int withExpand( - Walker *pWalker, - struct SrcList_item *pFrom +static int resolveFromTermToCte( + Parse *pParse, /* The parsing context */ + Walker *pWalker, /* Current tree walker */ + SrcItem *pFrom /* The FROM clause term to check */ ){ - Parse *pParse = pWalker->pParse; - sqlite3 *db = pParse->db; - struct Cte *pCte; /* Matched CTE (or NULL if no match) */ - With *pWith; /* WITH clause that pCte belongs to */ + Cte *pCte; /* Matched CTE (or NULL if no match) */ + With *pWith; /* The matching WITH */ assert( pFrom->pTab==0 ); - + if( pParse->pWith==0 ){ + /* There are no WITH clauses in the stack. No match is possible */ + return 0; + } + if( pParse->nErr ){ + /* Prior errors might have left pParse->pWith in a goofy state, so + ** go no further. */ + return 0; + } + if( pFrom->zDatabase!=0 ){ + /* The FROM term contains a schema qualifier (ex: main.t1) and so + ** it cannot possibly be a CTE reference. */ + return 0; + } + if( pFrom->fg.notCte ){ + /* The FROM term is specifically excluded from matching a CTE. + ** (1) It is part of a trigger that used to have zDatabase but had + ** zDatabase removed by sqlite3FixTriggerStep(). + ** (2) This is the first term in the FROM clause of an UPDATE. + */ + return 0; + } pCte = searchWith(pParse->pWith, pFrom, &pWith); if( pCte ){ + sqlite3 *db = pParse->db; Table *pTab; ExprList *pEList; Select *pSel; Select *pLeft; /* Left-most SELECT statement */ + Select *pRecTerm; /* Left-most recursive term */ int bMayRecursive; /* True if compound joined by UNION [ALL] */ With *pSavedWith; /* Initial value of pParse->pWith */ + int iRecTab = -1; /* Cursor for recursive table */ + CteUse *pCteUse; /* If pCte->zCteErr is non-NULL at this point, then this is an illegal ** recursive reference to CTE pCte. Leave an error in pParse and return @@ -125771,63 +146094,95 @@ static int withExpand( ** In this case, proceed. */ if( pCte->zCteErr ){ sqlite3ErrorMsg(pParse, pCte->zCteErr, pCte->zName); - return SQLITE_ERROR; + return 2; } - if( cannotBeFunction(pParse, pFrom) ) return SQLITE_ERROR; + if( cannotBeFunction(pParse, pFrom) ) return 2; assert( pFrom->pTab==0 ); - pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table)); - if( pTab==0 ) return WRC_Abort; + pTab = sqlite3DbMallocZero(db, sizeof(Table)); + if( pTab==0 ) return 2; + pCteUse = pCte->pUse; + if( pCteUse==0 ){ + pCte->pUse = pCteUse = sqlite3DbMallocZero(db, sizeof(pCteUse[0])); + if( pCteUse==0 + || sqlite3ParserAddCleanup(pParse,sqlite3DbFree,pCteUse)==0 + ){ + sqlite3DbFree(db, pTab); + return 2; + } + pCteUse->eM10d = pCte->eM10d; + } + pFrom->pTab = pTab; pTab->nTabRef = 1; pTab->zName = sqlite3DbStrDup(db, pCte->zName); pTab->iPKey = -1; pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); pTab->tabFlags |= TF_Ephemeral | TF_NoVisibleRowid; pFrom->pSelect = sqlite3SelectDup(db, pCte->pSelect, 0); - if( db->mallocFailed ) return SQLITE_NOMEM_BKPT; + if( db->mallocFailed ) return 2; + pFrom->pSelect->selFlags |= SF_CopyCte; assert( pFrom->pSelect ); + if( pFrom->fg.isIndexedBy ){ + sqlite3ErrorMsg(pParse, "no such index: \"%s\"", pFrom->u1.zIndexedBy); + return 2; + } + pFrom->fg.isCte = 1; + pFrom->u2.pCteUse = pCteUse; + pCteUse->nUse++; /* Check if this is a recursive CTE. */ - pSel = pFrom->pSelect; + pRecTerm = pSel = pFrom->pSelect; bMayRecursive = ( pSel->op==TK_ALL || pSel->op==TK_UNION ); - if( bMayRecursive ){ + while( bMayRecursive && pRecTerm->op==pSel->op ){ int i; - SrcList *pSrc = pFrom->pSelect->pSrc; + SrcList *pSrc = pRecTerm->pSrc; + assert( pRecTerm->pPrior!=0 ); for(i=0; inSrc; i++){ - struct SrcList_item *pItem = &pSrc->a[i]; - if( pItem->zDatabase==0 - && pItem->zName!=0 + SrcItem *pItem = &pSrc->a[i]; + if( pItem->zDatabase==0 + && pItem->zName!=0 && 0==sqlite3StrICmp(pItem->zName, pCte->zName) - ){ + ){ pItem->pTab = pTab; - pItem->fg.isRecursive = 1; pTab->nTabRef++; - pSel->selFlags |= SF_Recursive; + pItem->fg.isRecursive = 1; + if( pRecTerm->selFlags & SF_Recursive ){ + sqlite3ErrorMsg(pParse, + "multiple references to recursive table: %s", pCte->zName + ); + return 2; + } + pRecTerm->selFlags |= SF_Recursive; + if( iRecTab<0 ) iRecTab = pParse->nTab++; + pItem->iCursor = iRecTab; } } + if( (pRecTerm->selFlags & SF_Recursive)==0 ) break; + pRecTerm = pRecTerm->pPrior; } - /* Only one recursive reference is permitted. */ - if( pTab->nTabRef>2 ){ - sqlite3ErrorMsg( - pParse, "multiple references to recursive table: %s", pCte->zName - ); - return SQLITE_ERROR; - } - assert( pTab->nTabRef==1 || - ((pSel->selFlags&SF_Recursive) && pTab->nTabRef==2 )); - pCte->zCteErr = "circular reference: %s"; pSavedWith = pParse->pWith; pParse->pWith = pWith; - if( bMayRecursive ){ - Select *pPrior = pSel->pPrior; - assert( pPrior->pWith==0 ); - pPrior->pWith = pSel->pWith; - sqlite3WalkSelect(pWalker, pPrior); - pPrior->pWith = 0; + if( pSel->selFlags & SF_Recursive ){ + int rc; + assert( pRecTerm!=0 ); + assert( (pRecTerm->selFlags & SF_Recursive)==0 ); + assert( pRecTerm->pNext!=0 ); + assert( (pRecTerm->pNext->selFlags & SF_Recursive)!=0 ); + assert( pRecTerm->pWith==0 ); + pRecTerm->pWith = pSel->pWith; + rc = sqlite3WalkSelect(pWalker, pRecTerm); + pRecTerm->pWith = 0; + if( rc ){ + pParse->pWith = pSavedWith; + return 2; + } }else{ - sqlite3WalkSelect(pWalker, pSel); + if( sqlite3WalkSelect(pWalker, pSel) ){ + pParse->pWith = pSavedWith; + return 2; + } } pParse->pWith = pWith; @@ -125839,7 +146194,7 @@ static int withExpand( pCte->zName, pEList->nExpr, pCte->pCols->nExpr ); pParse->pWith = pSavedWith; - return SQLITE_ERROR; + return 2; } pEList = pCte->pCols; } @@ -125855,35 +146210,92 @@ static int withExpand( } pCte->zCteErr = 0; pParse->pWith = pSavedWith; + return 1; /* Success */ } - - return SQLITE_OK; + return 0; /* No match */ } #endif #ifndef SQLITE_OMIT_CTE /* -** If the SELECT passed as the second argument has an associated WITH +** If the SELECT passed as the second argument has an associated WITH ** clause, pop it from the stack stored as part of the Parse object. ** ** This function is used as the xSelectCallback2() callback by ** sqlite3SelectExpand() when walking a SELECT tree to resolve table -** names and other FROM clause elements. +** names and other FROM clause elements. */ -static void selectPopWith(Walker *pWalker, Select *p){ +SQLITE_PRIVATE void sqlite3SelectPopWith(Walker *pWalker, Select *p){ Parse *pParse = pWalker->pParse; if( OK_IF_ALWAYS_TRUE(pParse->pWith) && p->pPrior==0 ){ With *pWith = findRightmost(p)->pWith; if( pWith!=0 ){ - assert( pParse->pWith==pWith ); + assert( pParse->pWith==pWith || pParse->nErr ); pParse->pWith = pWith->pOuter; } } } -#else -#define selectPopWith 0 #endif +/* +** The SrcItem structure passed as the second argument represents a +** sub-query in the FROM clause of a SELECT statement. This function +** allocates and populates the SrcItem.pTab object. If successful, +** SQLITE_OK is returned. Otherwise, if an OOM error is encountered, +** SQLITE_NOMEM. +*/ +SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse *pParse, SrcItem *pFrom){ + Select *pSel = pFrom->pSelect; + Table *pTab; + + assert( pSel ); + pFrom->pTab = pTab = sqlite3DbMallocZero(pParse->db, sizeof(Table)); + if( pTab==0 ) return SQLITE_NOMEM; + pTab->nTabRef = 1; + if( pFrom->zAlias ){ + pTab->zName = sqlite3DbStrDup(pParse->db, pFrom->zAlias); + }else{ + pTab->zName = sqlite3MPrintf(pParse->db, "%!S", pFrom); + } + while( pSel->pPrior ){ pSel = pSel->pPrior; } + sqlite3ColumnsFromExprList(pParse, pSel->pEList,&pTab->nCol,&pTab->aCol); + pTab->iPKey = -1; + pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); +#ifndef SQLITE_ALLOW_ROWID_IN_VIEW + /* The usual case - do not allow ROWID on a subquery */ + pTab->tabFlags |= TF_Ephemeral | TF_NoVisibleRowid; +#else + pTab->tabFlags |= TF_Ephemeral; /* Legacy compatibility mode */ +#endif + return pParse->nErr ? SQLITE_ERROR : SQLITE_OK; +} + + +/* +** Check the N SrcItem objects to the right of pBase. (N might be zero!) +** If any of those SrcItem objects have a USING clause containing zName +** then return true. +** +** If N is zero, or none of the N SrcItem objects to the right of pBase +** contains a USING clause, or if none of the USING clauses contain zName, +** then return false. +*/ +static int inAnyUsingClause( + const char *zName, /* Name we are looking for */ + SrcItem *pBase, /* The base SrcItem. Looking at pBase[1] and following */ + int N /* How many SrcItems to check */ +){ + while( N>0 ){ + N--; + pBase++; + if( pBase->fg.isUsing==0 ) continue; + if( NEVER(pBase->u3.pUsing==0) ) continue; + if( sqlite3IdListIndex(pBase->u3.pUsing, zName)>=0 ) return 1; + } + return 0; +} + + /* ** This routine is a Walker callback for "expanding" a SELECT statement. ** "Expanding" means to do the following: @@ -125891,7 +146303,7 @@ static void selectPopWith(Walker *pWalker, Select *p){ ** (1) Make sure VDBE cursor numbers have been assigned to every ** element of the FROM clause. ** -** (2) Fill in the pTabList->a[].pTab fields in the SrcList that +** (2) Fill in the pTabList->a[].pTab fields in the SrcList that ** defines FROM clause. When views appear in the FROM clause, ** fill pTabList->a[].pSelect with a copy of the SELECT statement ** that implements the view. A copy is made of the view's SELECT @@ -125910,10 +146322,10 @@ static void selectPopWith(Walker *pWalker, Select *p){ */ static int selectExpander(Walker *pWalker, Select *p){ Parse *pParse = pWalker->pParse; - int i, j, k; + int i, j, k, rc; SrcList *pTabList; ExprList *pEList; - struct SrcList_item *pFrom; + SrcItem *pFrom; sqlite3 *db = pParse->db; Expr *pE, *pRight, *pExpr; u16 selFlags = p->selFlags; @@ -125927,8 +146339,21 @@ static int selectExpander(Walker *pWalker, Select *p){ if( (selFlags & SF_Expanded)!=0 ){ return WRC_Prune; } + if( pWalker->eCode ){ + /* Renumber selId because it has been copied from a view */ + p->selId = ++pParse->nSelect; + } pTabList = p->pSrc; pEList = p->pEList; + if( pParse->pWith && (p->selFlags & SF_View) ){ + if( p->pWith==0 ){ + p->pWith = (With*)sqlite3DbMallocZero(db, sizeof(With)); + if( p->pWith==0 ){ + return WRC_Abort; + } + } + p->pWith->bView = 1; + } sqlite3WithPush(pParse, p->pWith, 0); /* Make sure cursor numbers have been assigned to all entries in @@ -125943,12 +146368,8 @@ static int selectExpander(Walker *pWalker, Select *p){ for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ Table *pTab; assert( pFrom->fg.isRecursive==0 || pFrom->pTab!=0 ); - if( pFrom->fg.isRecursive ) continue; - assert( pFrom->pTab==0 ); -#ifndef SQLITE_OMIT_CTE - if( withExpand(pWalker, pFrom) ) return WRC_Abort; - if( pFrom->pTab ) {} else -#endif + if( pFrom->pTab ) continue; + assert( pFrom->fg.isRecursive==0 ); if( pFrom->zName==0 ){ #ifndef SQLITE_OMIT_SUBQUERY Select *pSel = pFrom->pSelect; @@ -125956,19 +146377,13 @@ static int selectExpander(Walker *pWalker, Select *p){ assert( pSel!=0 ); assert( pFrom->pTab==0 ); if( sqlite3WalkSelect(pWalker, pSel) ) return WRC_Abort; - pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table)); - if( pTab==0 ) return WRC_Abort; - pTab->nTabRef = 1; - if( pFrom->zAlias ){ - pTab->zName = sqlite3DbStrDup(db, pFrom->zAlias); - }else{ - pTab->zName = sqlite3MPrintf(db, "subquery_%p", (void*)pTab); - } - while( pSel->pPrior ){ pSel = pSel->pPrior; } - sqlite3ColumnsFromExprList(pParse, pSel->pEList,&pTab->nCol,&pTab->aCol); - pTab->iPKey = -1; - pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); - pTab->tabFlags |= TF_Ephemeral; + if( sqlite3ExpandSubquery(pParse, pFrom) ) return WRC_Abort; +#endif +#ifndef SQLITE_OMIT_CTE + }else if( (rc = resolveFromTermToCte(pParse, pWalker, pFrom))!=0 ){ + if( rc>1 ) return WRC_Abort; + pTab = pFrom->pTab; + assert( pTab!=0 ); #endif }else{ /* An ordinary table or view name in the FROM clause */ @@ -125985,30 +146400,52 @@ static int selectExpander(Walker *pWalker, Select *p){ if( !IsVirtual(pTab) && cannotBeFunction(pParse, pFrom) ){ return WRC_Abort; } -#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE) - if( IsVirtual(pTab) || pTab->pSelect ){ +#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) + if( !IsOrdinaryTable(pTab) ){ i16 nCol; + u8 eCodeOrig = pWalker->eCode; if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort; assert( pFrom->pSelect==0 ); - pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0); - sqlite3SelectSetName(pFrom->pSelect, pTab->zName); + if( IsView(pTab) ){ + if( (db->flags & SQLITE_EnableView)==0 + && pTab->pSchema!=db->aDb[1].pSchema + ){ + sqlite3ErrorMsg(pParse, "access to view \"%s\" prohibited", + pTab->zName); + } + pFrom->pSelect = sqlite3SelectDup(db, pTab->u.view.pSelect, 0); + } +#ifndef SQLITE_OMIT_VIRTUALTABLE + else if( ALWAYS(IsVirtual(pTab)) + && pFrom->fg.fromDDL + && ALWAYS(pTab->u.vtab.p!=0) + && pTab->u.vtab.p->eVtabRisk > ((db->flags & SQLITE_TrustedSchema)!=0) + ){ + sqlite3ErrorMsg(pParse, "unsafe use of virtual table \"%s\"", + pTab->zName); + } + assert( SQLITE_VTABRISK_Normal==1 && SQLITE_VTABRISK_High==2 ); +#endif nCol = pTab->nCol; pTab->nCol = -1; + pWalker->eCode = 1; /* Turn on Select.selId renumbering */ sqlite3WalkSelect(pWalker, pFrom->pSelect); + pWalker->eCode = eCodeOrig; pTab->nCol = nCol; } #endif } /* Locate the index named by the INDEXED BY clause, if any. */ - if( sqlite3IndexedByLookup(pParse, pFrom) ){ + if( pFrom->fg.isIndexedBy && sqlite3IndexedByLookup(pParse, pFrom) ){ return WRC_Abort; } } /* Process NATURAL keywords, and ON and USING clauses of joins. */ - if( db->mallocFailed || sqliteProcessJoin(pParse, p) ){ + assert( db->mallocFailed==0 || pParse->nErr!=0 ); + if( pParse->nErr || sqlite3ProcessJoin(pParse, p) ){ return WRC_Abort; } @@ -126055,10 +146492,9 @@ static int selectExpander(Walker *pWalker, Select *p){ */ pNew = sqlite3ExprListAppend(pParse, pNew, a[k].pExpr); if( pNew ){ - pNew->a[pNew->nExpr-1].zName = a[k].zName; - pNew->a[pNew->nExpr-1].zSpan = a[k].zSpan; - a[k].zName = 0; - a[k].zSpan = 0; + pNew->a[pNew->nExpr-1].zEName = a[k].zEName; + pNew->a[pNew->nExpr-1].fg.eEName = a[k].fg.eEName; + a[k].zEName = 0; } a[k].pExpr = 0; }else{ @@ -126066,38 +146502,73 @@ static int selectExpander(Walker *pWalker, Select *p){ ** expanded. */ int tableSeen = 0; /* Set to 1 when TABLE matches */ char *zTName = 0; /* text of name of TABLE */ + int iErrOfst; if( pE->op==TK_DOT ){ assert( pE->pLeft!=0 ); assert( !ExprHasProperty(pE->pLeft, EP_IntValue) ); zTName = pE->pLeft->u.zToken; + assert( ExprUseWOfst(pE->pLeft) ); + iErrOfst = pE->pRight->w.iOfst; + }else{ + assert( ExprUseWOfst(pE) ); + iErrOfst = pE->w.iOfst; } for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ - Table *pTab = pFrom->pTab; - Select *pSub = pFrom->pSelect; - char *zTabName = pFrom->zAlias; - const char *zSchemaName = 0; - int iDb; - if( zTabName==0 ){ + Table *pTab = pFrom->pTab; /* Table for this data source */ + ExprList *pNestedFrom; /* Result-set of a nested FROM clause */ + char *zTabName; /* AS name for this data source */ + const char *zSchemaName = 0; /* Schema name for this data source */ + int iDb; /* Schema index for this data src */ + IdList *pUsing; /* USING clause for pFrom[1] */ + + if( (zTabName = pFrom->zAlias)==0 ){ zTabName = pTab->zName; } if( db->mallocFailed ) break; - if( pSub==0 || (pSub->selFlags & SF_NestedFrom)==0 ){ - pSub = 0; + assert( (int)pFrom->fg.isNestedFrom == IsNestedFrom(pFrom->pSelect) ); + if( pFrom->fg.isNestedFrom ){ + assert( pFrom->pSelect!=0 ); + pNestedFrom = pFrom->pSelect->pEList; + assert( pNestedFrom!=0 ); + assert( pNestedFrom->nExpr==pTab->nCol ); + }else{ if( zTName && sqlite3StrICmp(zTName, zTabName)!=0 ){ continue; } + pNestedFrom = 0; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); zSchemaName = iDb>=0 ? db->aDb[iDb].zDbSName : "*"; } + if( i+1nSrc + && pFrom[1].fg.isUsing + && (selFlags & SF_NestedFrom)!=0 + ){ + int ii; + pUsing = pFrom[1].u3.pUsing; + for(ii=0; iinId; ii++){ + const char *zUName = pUsing->a[ii].zName; + pRight = sqlite3Expr(db, TK_ID, zUName); + sqlite3ExprSetErrorOffset(pRight, iErrOfst); + pNew = sqlite3ExprListAppend(pParse, pNew, pRight); + if( pNew ){ + struct ExprList_item *pX = &pNew->a[pNew->nExpr-1]; + assert( pX->zEName==0 ); + pX->zEName = sqlite3MPrintf(db,"..%s", zUName); + pX->fg.eEName = ENAME_TAB; + pX->fg.bUsingTerm = 1; + } + } + }else{ + pUsing = 0; + } for(j=0; jnCol; j++){ - char *zName = pTab->aCol[j].zName; - char *zColname; /* The computed column name */ - char *zToFree; /* Malloced string that needs to be freed */ - Token sColname; /* Computed column name as a token */ + char *zName = pTab->aCol[j].zCnName; + struct ExprList_item *pX; /* Newly added ExprList term */ assert( zName ); - if( zTName && pSub - && sqlite3MatchSpanName(pSub->pEList->a[j].zSpan, 0, zTName, 0)==0 + if( zTName + && pNestedFrom + && sqlite3MatchEName(&pNestedFrom->a[j], 0, zTName, 0)==0 ){ continue; } @@ -126107,60 +146578,80 @@ static int selectExpander(Walker *pWalker, Select *p){ ** bit set. */ if( (p->selFlags & SF_IncludeHidden)==0 - && IsHiddenColumn(&pTab->aCol[j]) + && IsHiddenColumn(&pTab->aCol[j]) + ){ + continue; + } + if( (pTab->aCol[j].colFlags & COLFLAG_NOEXPAND)!=0 + && zTName==0 + && (selFlags & (SF_NestedFrom))==0 ){ continue; } tableSeen = 1; - if( i>0 && zTName==0 ){ - if( (pFrom->fg.jointype & JT_NATURAL)!=0 - && tableAndColumnIndex(pTabList, i, zName, 0, 0) + if( i>0 && zTName==0 && (selFlags & SF_NestedFrom)==0 ){ + if( pFrom->fg.isUsing + && sqlite3IdListIndex(pFrom->u3.pUsing, zName)>=0 ){ - /* In a NATURAL join, omit the join columns from the - ** table to the right of the join */ - continue; - } - if( sqlite3IdListIndex(pFrom->pUsing, zName)>=0 ){ /* In a join with a USING clause, omit columns in the ** using clause from the table on the right. */ continue; } } pRight = sqlite3Expr(db, TK_ID, zName); - zColname = zName; - zToFree = 0; - if( longNames || pTabList->nSrc>1 ){ + if( (pTabList->nSrc>1 + && ( (pFrom->fg.jointype & JT_LTORJ)==0 + || (selFlags & SF_NestedFrom)!=0 + || !inAnyUsingClause(zName,pFrom,pTabList->nSrc-i-1) + ) + ) + || IN_RENAME_OBJECT + ){ Expr *pLeft; pLeft = sqlite3Expr(db, TK_ID, zTabName); pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight); + if( IN_RENAME_OBJECT && pE->pLeft ){ + sqlite3RenameTokenRemap(pParse, pLeft, pE->pLeft); + } if( zSchemaName ){ pLeft = sqlite3Expr(db, TK_ID, zSchemaName); pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pExpr); } - if( longNames ){ - zColname = sqlite3MPrintf(db, "%s.%s", zTabName, zName); - zToFree = zColname; - } }else{ pExpr = pRight; } + sqlite3ExprSetErrorOffset(pExpr, iErrOfst); pNew = sqlite3ExprListAppend(pParse, pNew, pExpr); - sqlite3TokenInit(&sColname, zColname); - sqlite3ExprListSetName(pParse, pNew, &sColname, 0); - if( pNew && (p->selFlags & SF_NestedFrom)!=0 ){ - struct ExprList_item *pX = &pNew->a[pNew->nExpr-1]; - if( pSub ){ - pX->zSpan = sqlite3DbStrDup(db, pSub->pEList->a[j].zSpan); - testcase( pX->zSpan==0 ); - }else{ - pX->zSpan = sqlite3MPrintf(db, "%s.%s.%s", - zSchemaName, zTabName, zColname); - testcase( pX->zSpan==0 ); - } - pX->bSpanIsTab = 1; + if( pNew==0 ){ + break; /* OOM */ + } + pX = &pNew->a[pNew->nExpr-1]; + assert( pX->zEName==0 ); + if( (selFlags & SF_NestedFrom)!=0 && !IN_RENAME_OBJECT ){ + if( pNestedFrom ){ + pX->zEName = sqlite3DbStrDup(db, pNestedFrom->a[j].zEName); + testcase( pX->zEName==0 ); + }else{ + pX->zEName = sqlite3MPrintf(db, "%s.%s.%s", + zSchemaName, zTabName, zName); + testcase( pX->zEName==0 ); + } + pX->fg.eEName = ENAME_TAB; + if( (pFrom->fg.isUsing + && sqlite3IdListIndex(pFrom->u3.pUsing, zName)>=0) + || (pUsing && sqlite3IdListIndex(pUsing, zName)>=0) + || (pTab->aCol[j].colFlags & COLFLAG_NOEXPAND)!=0 + ){ + pX->fg.bNoExpand = 1; + } + }else if( longNames ){ + pX->zEName = sqlite3MPrintf(db, "%s.%s", zTabName, zName); + pX->fg.eEName = ENAME_NAME; + }else{ + pX->zEName = sqlite3DbStrDup(db, zName); + pX->fg.eEName = ENAME_NAME; } - sqlite3DbFree(db, zToFree); } } if( !tableSeen ){ @@ -126184,29 +146675,12 @@ static int selectExpander(Walker *pWalker, Select *p){ p->selFlags |= SF_ComplexResult; } } - return WRC_Continue; -} - -/* -** No-op routine for the parse-tree walker. -** -** When this routine is the Walker.xExprCallback then expression trees -** are walked without any actions being taken at each node. Presumably, -** when this routine is used for Walker.xExprCallback then -** Walker.xSelectCallback is set to do something useful for every -** subquery in the parser tree. -*/ -SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - return WRC_Continue; -} - -/* -** No-op routine for the parse-tree walker for SELECT statements. -** subquery in the parser tree. -*/ -SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker *NotUsed, Select *NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x8 ){ + TREETRACE(0x8,pParse,p,("After result-set wildcard expansion:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif return WRC_Continue; } @@ -126243,7 +146717,8 @@ static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ sqlite3WalkSelect(&w, pSelect); } w.xSelectCallback = selectExpander; - w.xSelectCallback2 = selectPopWith; + w.xSelectCallback2 = sqlite3SelectPopWith; + w.eCode = 0; sqlite3WalkSelect(&w, pSelect); } @@ -126253,23 +146728,23 @@ static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ ** This is a Walker.xSelectCallback callback for the sqlite3SelectTypeInfo() ** interface. ** -** For each FROM-clause subquery, add Column.zType and Column.zColl -** information to the Table structure that represents the result set -** of that subquery. +** For each FROM-clause subquery, add Column.zType, Column.zColl, and +** Column.affinity information to the Table structure that represents +** the result set of that subquery. ** ** The Table structure that represents the result set was constructed -** by selectExpander() but the type and collation information was omitted -** at that point because identifiers had not yet been resolved. This -** routine is called after identifier resolution. +** by selectExpander() but the type and collation and affinity information +** was omitted at that point because identifiers had not yet been resolved. +** This routine is called after identifier resolution. */ static void selectAddSubqueryTypeInfo(Walker *pWalker, Select *p){ Parse *pParse; int i; SrcList *pTabList; - struct SrcList_item *pFrom; + SrcItem *pFrom; assert( p->selFlags & SF_Resolved ); - assert( (p->selFlags & SF_HasTypeInfo)==0 ); + if( p->selFlags & SF_HasTypeInfo ) return; p->selFlags |= SF_HasTypeInfo; pParse = pWalker->pParse; pTabList = p->pSrc; @@ -126280,8 +146755,7 @@ static void selectAddSubqueryTypeInfo(Walker *pWalker, Select *p){ /* A sub-query in the FROM clause of a SELECT */ Select *pSel = pFrom->pSelect; if( pSel ){ - while( pSel->pPrior ) pSel = pSel->pPrior; - sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSel); + sqlite3SubqueryColumnTypes(pParse, pTab, pSel, SQLITE_AFF_NONE); } } } @@ -126326,15 +146800,188 @@ SQLITE_PRIVATE void sqlite3SelectPrep( NameContext *pOuterNC /* Name context for container */ ){ assert( p!=0 || pParse->db->mallocFailed ); + assert( pParse->db->pParse==pParse ); if( pParse->db->mallocFailed ) return; if( p->selFlags & SF_HasTypeInfo ) return; sqlite3SelectExpand(pParse, p); - if( pParse->nErr || pParse->db->mallocFailed ) return; + if( pParse->nErr ) return; sqlite3ResolveSelectNames(pParse, p, pOuterNC); - if( pParse->nErr || pParse->db->mallocFailed ) return; + if( pParse->nErr ) return; sqlite3SelectAddTypeInfo(pParse, p); } +#if TREETRACE_ENABLED +/* +** Display all information about an AggInfo object +*/ +static void printAggInfo(AggInfo *pAggInfo){ + int ii; + for(ii=0; iinColumn; ii++){ + struct AggInfo_col *pCol = &pAggInfo->aCol[ii]; + sqlite3DebugPrintf( + "agg-column[%d] pTab=%s iTable=%d iColumn=%d iMem=%d" + " iSorterColumn=%d %s\n", + ii, pCol->pTab ? pCol->pTab->zName : "NULL", + pCol->iTable, pCol->iColumn, pAggInfo->iFirstReg+ii, + pCol->iSorterColumn, + ii>=pAggInfo->nAccumulator ? "" : " Accumulator"); + sqlite3TreeViewExpr(0, pAggInfo->aCol[ii].pCExpr, 0); + } + for(ii=0; iinFunc; ii++){ + sqlite3DebugPrintf("agg-func[%d]: iMem=%d\n", + ii, pAggInfo->iFirstReg+pAggInfo->nColumn+ii); + sqlite3TreeViewExpr(0, pAggInfo->aFunc[ii].pFExpr, 0); + } +} +#endif /* TREETRACE_ENABLED */ + +/* +** Analyze the arguments to aggregate functions. Create new pAggInfo->aCol[] +** entries for columns that are arguments to aggregate functions but which +** are not otherwise used. +** +** The aCol[] entries in AggInfo prior to nAccumulator are columns that +** are referenced outside of aggregate functions. These might be columns +** that are part of the GROUP by clause, for example. Other database engines +** would throw an error if there is a column reference that is not in the +** GROUP BY clause and that is not part of an aggregate function argument. +** But SQLite allows this. +** +** The aCol[] entries beginning with the aCol[nAccumulator] and following +** are column references that are used exclusively as arguments to +** aggregate functions. This routine is responsible for computing +** (or recomputing) those aCol[] entries. +*/ +static void analyzeAggFuncArgs( + AggInfo *pAggInfo, + NameContext *pNC +){ + int i; + assert( pAggInfo!=0 ); + assert( pAggInfo->iFirstReg==0 ); + pNC->ncFlags |= NC_InAggFunc; + for(i=0; inFunc; i++){ + Expr *pExpr = pAggInfo->aFunc[i].pFExpr; + assert( ExprUseXList(pExpr) ); + sqlite3ExprAnalyzeAggList(pNC, pExpr->x.pList); +#ifndef SQLITE_OMIT_WINDOWFUNC + assert( !IsWindowFunc(pExpr) ); + if( ExprHasProperty(pExpr, EP_WinFunc) ){ + sqlite3ExprAnalyzeAggregates(pNC, pExpr->y.pWin->pFilter); + } +#endif + } + pNC->ncFlags &= ~NC_InAggFunc; +} + +/* +** An index on expressions is being used in the inner loop of an +** aggregate query with a GROUP BY clause. This routine attempts +** to adjust the AggInfo object to take advantage of index and to +** perhaps use the index as a covering index. +** +*/ +static void optimizeAggregateUseOfIndexedExpr( + Parse *pParse, /* Parsing context */ + Select *pSelect, /* The SELECT statement being processed */ + AggInfo *pAggInfo, /* The aggregate info */ + NameContext *pNC /* Name context used to resolve agg-func args */ +){ + assert( pAggInfo->iFirstReg==0 ); + assert( pSelect!=0 ); + assert( pSelect->pGroupBy!=0 ); + pAggInfo->nColumn = pAggInfo->nAccumulator; + if( ALWAYS(pAggInfo->nSortingColumn>0) ){ + int mx = pSelect->pGroupBy->nExpr - 1; + int j, k; + for(j=0; jnColumn; j++){ + k = pAggInfo->aCol[j].iSorterColumn; + if( k>mx ) mx = k; + } + pAggInfo->nSortingColumn = mx+1; + } + analyzeAggFuncArgs(pAggInfo, pNC); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x20 ){ + IndexedExpr *pIEpr; + TREETRACE(0x20, pParse, pSelect, + ("AggInfo (possibly) adjusted for Indexed Exprs\n")); + sqlite3TreeViewSelect(0, pSelect, 0); + for(pIEpr=pParse->pIdxEpr; pIEpr; pIEpr=pIEpr->pIENext){ + printf("data-cursor=%d index={%d,%d}\n", + pIEpr->iDataCur, pIEpr->iIdxCur, pIEpr->iIdxCol); + sqlite3TreeViewExpr(0, pIEpr->pExpr, 0); + } + printAggInfo(pAggInfo); + } +#else + UNUSED_PARAMETER(pSelect); + UNUSED_PARAMETER(pParse); +#endif +} + +/* +** Walker callback for aggregateConvertIndexedExprRefToColumn(). +*/ +static int aggregateIdxEprRefToColCallback(Walker *pWalker, Expr *pExpr){ + AggInfo *pAggInfo; + struct AggInfo_col *pCol; + UNUSED_PARAMETER(pWalker); + if( pExpr->pAggInfo==0 ) return WRC_Continue; + if( pExpr->op==TK_AGG_COLUMN ) return WRC_Continue; + if( pExpr->op==TK_AGG_FUNCTION ) return WRC_Continue; + if( pExpr->op==TK_IF_NULL_ROW ) return WRC_Continue; + pAggInfo = pExpr->pAggInfo; + if( NEVER(pExpr->iAgg>=pAggInfo->nColumn) ) return WRC_Continue; + assert( pExpr->iAgg>=0 ); + pCol = &pAggInfo->aCol[pExpr->iAgg]; + pExpr->op = TK_AGG_COLUMN; + pExpr->iTable = pCol->iTable; + pExpr->iColumn = pCol->iColumn; + ExprClearProperty(pExpr, EP_Skip|EP_Collate|EP_Unlikely); + return WRC_Prune; +} + +/* +** Convert every pAggInfo->aFunc[].pExpr such that any node within +** those expressions that has pAppInfo set is changed into a TK_AGG_COLUMN +** opcode. +*/ +static void aggregateConvertIndexedExprRefToColumn(AggInfo *pAggInfo){ + int i; + Walker w; + memset(&w, 0, sizeof(w)); + w.xExprCallback = aggregateIdxEprRefToColCallback; + for(i=0; inFunc; i++){ + sqlite3WalkExpr(&w, pAggInfo->aFunc[i].pFExpr); + } +} + + +/* +** Allocate a block of registers so that there is one register for each +** pAggInfo->aCol[] and pAggInfo->aFunc[] entry in pAggInfo. The first +** register in this block is stored in pAggInfo->iFirstReg. +** +** This routine may only be called once for each AggInfo object. Prior +** to calling this routine: +** +** * The aCol[] and aFunc[] arrays may be modified +** * The AggInfoColumnReg() and AggInfoFuncReg() macros may not be used +** +** After calling this routine: +** +** * The aCol[] and aFunc[] arrays are fixed +** * The AggInfoColumnReg() and AggInfoFuncReg() macros may be used +** +*/ +static void assignAggregateRegisters(Parse *pParse, AggInfo *pAggInfo){ + assert( pAggInfo!=0 ); + assert( pAggInfo->iFirstReg==0 ); + pAggInfo->iFirstReg = pParse->nMem + 1; + pParse->nMem += pAggInfo->nColumn + pAggInfo->nFunc; +} + /* ** Reset the aggregate accumulator. ** @@ -126348,33 +146995,27 @@ static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){ int i; struct AggInfo_func *pFunc; int nReg = pAggInfo->nFunc + pAggInfo->nColumn; + assert( pAggInfo->iFirstReg>0 ); + assert( pParse->db->pParse==pParse ); + assert( pParse->db->mallocFailed==0 || pParse->nErr!=0 ); if( nReg==0 ) return; -#ifdef SQLITE_DEBUG - /* Verify that all AggInfo registers are within the range specified by - ** AggInfo.mnReg..AggInfo.mxReg */ - assert( nReg==pAggInfo->mxReg-pAggInfo->mnReg+1 ); - for(i=0; inColumn; i++){ - assert( pAggInfo->aCol[i].iMem>=pAggInfo->mnReg - && pAggInfo->aCol[i].iMem<=pAggInfo->mxReg ); - } - for(i=0; inFunc; i++){ - assert( pAggInfo->aFunc[i].iMem>=pAggInfo->mnReg - && pAggInfo->aFunc[i].iMem<=pAggInfo->mxReg ); - } -#endif - sqlite3VdbeAddOp3(v, OP_Null, 0, pAggInfo->mnReg, pAggInfo->mxReg); + if( pParse->nErr ) return; + sqlite3VdbeAddOp3(v, OP_Null, 0, pAggInfo->iFirstReg, + pAggInfo->iFirstReg+nReg-1); for(pFunc=pAggInfo->aFunc, i=0; inFunc; i++, pFunc++){ if( pFunc->iDistinct>=0 ){ - Expr *pE = pFunc->pExpr; - assert( !ExprHasProperty(pE, EP_xIsSelect) ); + Expr *pE = pFunc->pFExpr; + assert( ExprUseXList(pE) ); if( pE->x.pList==0 || pE->x.pList->nExpr!=1 ){ sqlite3ErrorMsg(pParse, "DISTINCT aggregates must have exactly one " "argument"); pFunc->iDistinct = -1; }else{ - KeyInfo *pKeyInfo = keyInfoFromExprList(pParse, pE->x.pList, 0, 0); - sqlite3VdbeAddOp4(v, OP_OpenEphemeral, pFunc->iDistinct, 0, 0, - (char*)pKeyInfo, P4_KEYINFO); + KeyInfo *pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pE->x.pList,0,0); + pFunc->iDistAddr = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, + pFunc->iDistinct, 0, 0, (char*)pKeyInfo, P4_KEYINFO); + ExplainQueryPlan((pParse, 0, "USE TEMP B-TREE FOR %s(DISTINCT)", + pFunc->pFunc->zName)); } } } @@ -126389,18 +147030,31 @@ static void finalizeAggFunctions(Parse *pParse, AggInfo *pAggInfo){ int i; struct AggInfo_func *pF; for(i=0, pF=pAggInfo->aFunc; inFunc; i++, pF++){ - ExprList *pList = pF->pExpr->x.pList; - assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) ); - sqlite3VdbeAddOp2(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0); + ExprList *pList; + assert( ExprUseXList(pF->pFExpr) ); + pList = pF->pFExpr->x.pList; + sqlite3VdbeAddOp2(v, OP_AggFinal, AggInfoFuncReg(pAggInfo,i), + pList ? pList->nExpr : 0); sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF); } } + /* -** Update the accumulator memory cells for an aggregate based on -** the current cursor position. +** Generate code that will update the accumulator memory cells for an +** aggregate based on the current cursor position. +** +** If regAcc is non-zero and there are no min() or max() aggregates +** in pAggInfo, then only populate the pAggInfo->nAccumulator accumulator +** registers if register regAcc contains 0. The caller will take care +** of setting and clearing regAcc. */ -static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ +static void updateAccumulator( + Parse *pParse, + int regAcc, + AggInfo *pAggInfo, + int eDistinctType +){ Vdbe *v = pParse->pVdbe; int i; int regHit = 0; @@ -126408,13 +147062,39 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ struct AggInfo_func *pF; struct AggInfo_col *pC; + assert( pAggInfo->iFirstReg>0 ); + if( pParse->nErr ) return; pAggInfo->directMode = 1; for(i=0, pF=pAggInfo->aFunc; inFunc; i++, pF++){ int nArg; int addrNext = 0; int regAgg; - ExprList *pList = pF->pExpr->x.pList; - assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) ); + ExprList *pList; + assert( ExprUseXList(pF->pFExpr) ); + assert( !IsWindowFunc(pF->pFExpr) ); + pList = pF->pFExpr->x.pList; + if( ExprHasProperty(pF->pFExpr, EP_WinFunc) ){ + Expr *pFilter = pF->pFExpr->y.pWin->pFilter; + if( pAggInfo->nAccumulator + && (pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL) + && regAcc + ){ + /* If regAcc==0, there there exists some min() or max() function + ** without a FILTER clause that will ensure the magnet registers + ** are populated. */ + if( regHit==0 ) regHit = ++pParse->nMem; + /* If this is the first row of the group (regAcc contains 0), clear the + ** "magnet" register regHit so that the accumulator registers + ** are populated if the FILTER clause jumps over the the + ** invocation of min() or max() altogether. Or, if this is not + ** the first row (regAcc contains 1), set the magnet register so that + ** the accumulators are not populated unless the min()/max() is invoked + ** and indicates that they should be. */ + sqlite3VdbeAddOp2(v, OP_Copy, regAcc, regHit); + } + addrNext = sqlite3VdbeMakeLabel(pParse); + sqlite3ExprIfFalse(pParse, pFilter, addrNext, SQLITE_JUMPIFNULL); + } if( pList ){ nArg = pList->nExpr; regAgg = sqlite3GetTempRange(pParse, nArg); @@ -126423,11 +147103,12 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ nArg = 0; regAgg = 0; } - if( pF->iDistinct>=0 ){ - addrNext = sqlite3VdbeMakeLabel(v); - testcase( nArg==0 ); /* Error condition */ - testcase( nArg>1 ); /* Also an error */ - codeDistinct(pParse, pF->iDistinct, addrNext, 1, regAgg); + if( pF->iDistinct>=0 && pList ){ + if( addrNext==0 ){ + addrNext = sqlite3VdbeMakeLabel(pParse); + } + pF->iDistinct = codeDistinct(pParse, eDistinctType, + pF->iDistinct, addrNext, pList, regAgg); } if( pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){ CollSeq *pColl = 0; @@ -126443,38 +147124,27 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ if( regHit==0 && pAggInfo->nAccumulator ) regHit = ++pParse->nMem; sqlite3VdbeAddOp4(v, OP_CollSeq, regHit, 0, 0, (char *)pColl, P4_COLLSEQ); } - sqlite3VdbeAddOp3(v, OP_AggStep0, 0, regAgg, pF->iMem); + sqlite3VdbeAddOp3(v, OP_AggStep, 0, regAgg, AggInfoFuncReg(pAggInfo,i)); sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF); sqlite3VdbeChangeP5(v, (u8)nArg); - sqlite3ExprCacheAffinityChange(pParse, regAgg, nArg); sqlite3ReleaseTempRange(pParse, regAgg, nArg); if( addrNext ){ sqlite3VdbeResolveLabel(v, addrNext); - sqlite3ExprCacheClear(pParse); } } - - /* Before populating the accumulator registers, clear the column cache. - ** Otherwise, if any of the required column values are already present - ** in registers, sqlite3ExprCode() may use OP_SCopy to copy the value - ** to pC->iMem. But by the time the value is used, the original register - ** may have been used, invalidating the underlying buffer holding the - ** text or blob value. See ticket [883034dcb5]. - ** - ** Another solution would be to change the OP_SCopy used to copy cached - ** values to an OP_Copy. - */ + if( regHit==0 && pAggInfo->nAccumulator ){ + regHit = regAcc; + } if( regHit ){ addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); VdbeCoverage(v); } - sqlite3ExprCacheClear(pParse); for(i=0, pC=pAggInfo->aCol; inAccumulator; i++, pC++){ - sqlite3ExprCode(pParse, pC->pExpr, pC->iMem); + sqlite3ExprCode(pParse, pC->pCExpr, AggInfoColumnReg(pAggInfo,i)); } + pAggInfo->directMode = 0; - sqlite3ExprCacheClear(pParse); if( addrHitTest ){ - sqlite3VdbeJumpHere(v, addrHitTest); + sqlite3VdbeJumpHereOrPopInst(v, addrHitTest); } } @@ -126490,7 +147160,7 @@ static void explainSimpleCount( ){ if( pParse->explain==2 ){ int bCover = (pIdx!=0 && (HasRowid(pTab) || !IsPrimaryKeyIndex(pIdx))); - sqlite3VdbeExplain(pParse, 0, "SCAN TABLE %s%s%s", + sqlite3VdbeExplain(pParse, 0, "SCAN %s%s%s", pTab->zName, bCover ? " USING COVERING INDEX " : "", bCover ? pIdx->zName : "" @@ -126504,10 +147174,10 @@ static void explainSimpleCount( /* ** sqlite3WalkExpr() callback used by havingToWhere(). ** -** If the node passed to the callback is a TK_AND node, return +** If the node passed to the callback is a TK_AND node, return ** WRC_Continue to tell sqlite3WalkExpr() to iterate through child nodes. ** -** Otherwise, return WRC_Prune. In this case, also check if the +** Otherwise, return WRC_Prune. In this case, also check if the ** sub-expression matches the criteria for being moved to the WHERE ** clause. If so, add it to the WHERE clause and replace the sub-expression ** within the HAVING expression with a constant "1". @@ -126515,13 +147185,23 @@ static void explainSimpleCount( static int havingToWhereExprCb(Walker *pWalker, Expr *pExpr){ if( pExpr->op!=TK_AND ){ Select *pS = pWalker->u.pSelect; - if( sqlite3ExprIsConstantOrGroupBy(pWalker->pParse, pExpr, pS->pGroupBy) ){ + /* This routine is called before the HAVING clause of the current + ** SELECT is analyzed for aggregates. So if pExpr->pAggInfo is set + ** here, it indicates that the expression is a correlated reference to a + ** column from an outer aggregate query, or an aggregate function that + ** belongs to an outer query. Do not move the expression to the WHERE + ** clause in this obscure case, as doing so may corrupt the outer Select + ** statements AggInfo structure. */ + if( sqlite3ExprIsConstantOrGroupBy(pWalker->pParse, pExpr, pS->pGroupBy) + && ExprAlwaysFalse(pExpr)==0 + && pExpr->pAggInfo==0 + ){ sqlite3 *db = pWalker->pParse->db; - Expr *pNew = sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[1], 0); + Expr *pNew = sqlite3Expr(db, TK_INTEGER, "1"); if( pNew ){ Expr *pWhere = pS->pWhere; SWAP(Expr, *pNew, *pExpr); - pNew = sqlite3ExprAnd(db, pWhere, pNew); + pNew = sqlite3ExprAnd(pWalker->pParse, pWhere, pNew); pS->pWhere = pNew; pWalker->eCode = 1; } @@ -126553,33 +147233,47 @@ static void havingToWhere(Parse *pParse, Select *p){ sWalker.xExprCallback = havingToWhereExprCb; sWalker.u.pSelect = p; sqlite3WalkExpr(&sWalker, p->pHaving); -#if SELECTTRACE_ENABLED - if( sWalker.eCode && (sqlite3SelectTrace & 0x100)!=0 ){ - SELECTTRACE(0x100,pParse,p,("Move HAVING terms into WHERE:\n")); +#if TREETRACE_ENABLED + if( sWalker.eCode && (sqlite3TreeTrace & 0x100)!=0 ){ + TREETRACE(0x100,pParse,p,("Move HAVING terms into WHERE:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif } /* -** Check to see if the pThis entry of pTabList is a self-join of a prior view. -** If it is, then return the SrcList_item for the prior view. If it is not, -** then return 0. +** Check to see if the pThis entry of pTabList is a self-join of another view. +** Search FROM-clause entries in the range of iFirst..iEnd, including iFirst +** but stopping before iEnd. +** +** If pThis is a self-join, then return the SrcItem for the first other +** instance of that view found. If pThis is not a self-join then return 0. */ -static struct SrcList_item *isSelfJoinView( +static SrcItem *isSelfJoinView( SrcList *pTabList, /* Search for self-joins in this FROM clause */ - struct SrcList_item *pThis /* Search for prior reference to this subquery */ + SrcItem *pThis, /* Search for prior reference to this subquery */ + int iFirst, int iEnd /* Range of FROM-clause entries to search. */ ){ - struct SrcList_item *pItem; - for(pItem = pTabList->a; pItempSelect!=0 ); + if( pThis->pSelect->selFlags & SF_PushDown ) return 0; + while( iFirsta[iFirst++]; if( pItem->pSelect==0 ) continue; if( pItem->fg.viaCoroutine ) continue; if( pItem->zName==0 ) continue; - if( sqlite3_stricmp(pItem->zDatabase, pThis->zDatabase)!=0 ) continue; + assert( pItem->pTab!=0 ); + assert( pThis->pTab!=0 ); + if( pItem->pTab->pSchema!=pThis->pTab->pSchema ) continue; if( sqlite3_stricmp(pItem->zName, pThis->zName)!=0 ) continue; - if( sqlite3ExprCompare(0, - pThis->pSelect->pWhere, pItem->pSelect->pWhere, -1) - ){ + pS1 = pItem->pSelect; + if( pItem->pTab->pSchema==0 && pThis->pSelect->selId!=pS1->selId ){ + /* The query flattener left two different CTE tables with identical + ** names in the same FROM clause. */ + continue; + } + if( pItem->pSelect->selFlags & SF_PushDown ){ /* The view was modified by some other optimization such as ** pushDownWhereTerms() */ continue; @@ -126589,7 +147283,15 @@ static struct SrcList_item *isSelfJoinView( return 0; } -#ifdef SQLITE_COUNTOFVIEW_OPTIMIZATION +/* +** Deallocate a single AggInfo object +*/ +static void agginfoFree(sqlite3 *db, AggInfo *p){ + sqlite3DbFree(db, p->aCol); + sqlite3DbFree(db, p->aFunc); + sqlite3DbFreeNN(db, p); +} + /* ** Attempt to transform a query of the form ** @@ -126602,8 +147304,10 @@ static struct SrcList_item *isSelfJoinView( ** The transformation only works if all of the following are true: ** ** * The subquery is a UNION ALL of two or more terms +** * The subquery does not have a LIMIT clause ** * There is no WHERE or GROUP BY or HAVING clauses on the subqueries -** * The outer query is a simple count(*) +** * The outer query is a simple count(*) with no WHERE clause or other +** extraneous syntax. ** ** Return TRUE if the optimization is undertaken. */ @@ -126614,19 +147318,29 @@ static int countOfViewOptimization(Parse *pParse, Select *p){ sqlite3 *db; if( (p->selFlags & SF_Aggregate)==0 ) return 0; /* This is an aggregate */ if( p->pEList->nExpr!=1 ) return 0; /* Single result column */ + if( p->pWhere ) return 0; + if( p->pHaving ) return 0; + if( p->pGroupBy ) return 0; + if( p->pOrderBy ) return 0; pExpr = p->pEList->a[0].pExpr; if( pExpr->op!=TK_AGG_FUNCTION ) return 0; /* Result is an aggregate */ + assert( ExprUseUToken(pExpr) ); if( sqlite3_stricmp(pExpr->u.zToken,"count") ) return 0; /* Is count() */ + assert( ExprUseXList(pExpr) ); if( pExpr->x.pList!=0 ) return 0; /* Must be count(*) */ if( p->pSrc->nSrc!=1 ) return 0; /* One table in FROM */ + if( ExprHasProperty(pExpr, EP_WinFunc) ) return 0;/* Not a window function */ pSub = p->pSrc->a[0].pSelect; if( pSub==0 ) return 0; /* The FROM is a subquery */ - if( pSub->pPrior==0 ) return 0; /* Must be a compound ry */ + if( pSub->pPrior==0 ) return 0; /* Must be a compound */ + if( pSub->selFlags & SF_CopyCte ) return 0; /* Not a CTE */ do{ if( pSub->op!=TK_ALL && pSub->pPrior ) return 0; /* Must be UNION ALL */ if( pSub->pWhere ) return 0; /* No WHERE clause */ + if( pSub->pLimit ) return 0; /* No LIMIT clause */ if( pSub->selFlags & SF_Aggregate ) return 0; /* Not an aggregate */ - pSub = pSub->pPrior; /* Repeat over compound */ + assert( pSub->pHaving==0 ); /* Due to the previous */ + pSub = pSub->pPrior; /* Repeat over compound */ }while( pSub ); /* If we reach this point then it is OK to perform the transformation */ @@ -126661,18 +147375,102 @@ static int countOfViewOptimization(Parse *pParse, Select *p){ p->pEList->a[0].pExpr = pExpr; p->selFlags &= ~SF_Aggregate; -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x400 ){ - SELECTTRACE(0x400,pParse,p,("After count-of-view optimization:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x200 ){ + TREETRACE(0x200,pParse,p,("After count-of-view optimization:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif return 1; } -#endif /* SQLITE_COUNTOFVIEW_OPTIMIZATION */ /* -** Generate code for the SELECT statement given in the p argument. +** If any term of pSrc, or any SF_NestedFrom sub-query, is not the same +** as pSrcItem but has the same alias as p0, then return true. +** Otherwise return false. +*/ +static int sameSrcAlias(SrcItem *p0, SrcList *pSrc){ + int i; + for(i=0; inSrc; i++){ + SrcItem *p1 = &pSrc->a[i]; + if( p1==p0 ) continue; + if( p0->pTab==p1->pTab && 0==sqlite3_stricmp(p0->zAlias, p1->zAlias) ){ + return 1; + } + if( p1->pSelect + && (p1->pSelect->selFlags & SF_NestedFrom)!=0 + && sameSrcAlias(p0, p1->pSelect->pSrc) + ){ + return 1; + } + } + return 0; +} + +/* +** Return TRUE (non-zero) if the i-th entry in the pTabList SrcList can +** be implemented as a co-routine. The i-th entry is guaranteed to be +** a subquery. +** +** The subquery is implemented as a co-routine if all of the following are +** true: +** +** (1) The subquery will likely be implemented in the outer loop of +** the query. This will be the case if any one of the following +** conditions hold: +** (a) The subquery is the only term in the FROM clause +** (b) The subquery is the left-most term and a CROSS JOIN or similar +** requires it to be the outer loop +** (c) All of the following are true: +** (i) The subquery is the left-most subquery in the FROM clause +** (ii) There is nothing that would prevent the subquery from +** being used as the outer loop if the sqlite3WhereBegin() +** routine nominates it to that position. +** (iii) The query is not a UPDATE ... FROM +** (2) The subquery is not a CTE that should be materialized because +** (a) the AS MATERIALIZED keyword is used, or +** (b) the CTE is used multiple times and does not have the +** NOT MATERIALIZED keyword +** (3) The subquery is not part of a left operand for a RIGHT JOIN +** (4) The SQLITE_Coroutine optimization disable flag is not set +** (5) The subquery is not self-joined +*/ +static int fromClauseTermCanBeCoroutine( + Parse *pParse, /* Parsing context */ + SrcList *pTabList, /* FROM clause */ + int i, /* Which term of the FROM clause holds the subquery */ + int selFlags /* Flags on the SELECT statement */ +){ + SrcItem *pItem = &pTabList->a[i]; + if( pItem->fg.isCte ){ + const CteUse *pCteUse = pItem->u2.pCteUse; + if( pCteUse->eM10d==M10d_Yes ) return 0; /* (2a) */ + if( pCteUse->nUse>=2 && pCteUse->eM10d!=M10d_No ) return 0; /* (2b) */ + } + if( pTabList->a[0].fg.jointype & JT_LTORJ ) return 0; /* (3) */ + if( OptimizationDisabled(pParse->db, SQLITE_Coroutines) ) return 0; /* (4) */ + if( isSelfJoinView(pTabList, pItem, i+1, pTabList->nSrc)!=0 ){ + return 0; /* (5) */ + } + if( i==0 ){ + if( pTabList->nSrc==1 ) return 1; /* (1a) */ + if( pTabList->a[1].fg.jointype & JT_CROSS ) return 1; /* (1b) */ + if( selFlags & SF_UpdateFrom ) return 0; /* (1c-iii) */ + return 1; + } + if( selFlags & SF_UpdateFrom ) return 0; /* (1c-iii) */ + while( 1 /*exit-by-break*/ ){ + if( pItem->fg.jointype & (JT_OUTER|JT_CROSS) ) return 0; /* (1c-ii) */ + if( i==0 ) break; + i--; + pItem--; + if( pItem->pSelect!=0 ) return 0; /* (1c-i) */ + } + return 1; +} + +/* +** Generate code for the SELECT statement given in the p argument. ** ** The results are returned according to the SelectDest structure. ** See comments in sqliteInt.h for further information. @@ -126698,26 +147496,31 @@ SQLITE_PRIVATE int sqlite3Select( Expr *pWhere; /* The WHERE clause. May be NULL */ ExprList *pGroupBy; /* The GROUP BY clause. May be NULL */ Expr *pHaving; /* The HAVING clause. May be NULL */ + AggInfo *pAggInfo = 0; /* Aggregate information */ int rc = 1; /* Value to return from this function */ DistinctCtx sDistinct; /* Info on how to code the DISTINCT keyword */ SortCtx sSort; /* Info on how to code the ORDER BY clause */ - AggInfo sAggInfo; /* Information used by aggregate queries */ int iEnd; /* Address of the end of the query */ sqlite3 *db; /* The database connection */ ExprList *pMinMaxOrderBy = 0; /* Added ORDER BY for min/max queries */ u8 minMaxFlag; /* Flag for min/max queries */ db = pParse->db; + assert( pParse==db->pParse ); v = sqlite3GetVdbe(pParse); - if( p==0 || db->mallocFailed || pParse->nErr ){ + if( p==0 || pParse->nErr ){ return 1; } + assert( db->mallocFailed==0 ); if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1; - memset(&sAggInfo, 0, sizeof(sAggInfo)); -#if SELECTTRACE_ENABLED - SELECTTRACE(1,pParse,p, ("begin processing:\n", pParse->addrExplain)); - if( sqlite3SelectTrace & 0x100 ){ - sqlite3TreeViewSelect(0, p, 0); +#if TREETRACE_ENABLED + TREETRACE(0x1,pParse,p, ("begin processing:\n", pParse->addrExplain)); + if( sqlite3TreeTrace & 0x10000 ){ + if( (sqlite3TreeTrace & 0x10001)==0x10000 ){ + sqlite3TreeViewLine(0, "In sqlite3Select() at %s:%d", + __FILE__, __LINE__); + } + sqlite3ShowSelect(p); } #endif @@ -126725,60 +147528,154 @@ SQLITE_PRIVATE int sqlite3Select( assert( p->pOrderBy==0 || pDest->eDest!=SRT_Fifo ); assert( p->pOrderBy==0 || pDest->eDest!=SRT_DistQueue ); assert( p->pOrderBy==0 || pDest->eDest!=SRT_Queue ); - if( IgnorableOrderby(pDest) ){ - assert(pDest->eDest==SRT_Exists || pDest->eDest==SRT_Union || - pDest->eDest==SRT_Except || pDest->eDest==SRT_Discard || - pDest->eDest==SRT_Queue || pDest->eDest==SRT_DistFifo || - pDest->eDest==SRT_DistQueue || pDest->eDest==SRT_Fifo); - /* If ORDER BY makes no difference in the output then neither does - ** DISTINCT so it can be removed too. */ - sqlite3ExprListDelete(db, p->pOrderBy); - p->pOrderBy = 0; + if( IgnorableDistinct(pDest) ){ + assert(pDest->eDest==SRT_Exists || pDest->eDest==SRT_Union || + pDest->eDest==SRT_Except || pDest->eDest==SRT_Discard || + pDest->eDest==SRT_DistQueue || pDest->eDest==SRT_DistFifo ); + /* All of these destinations are also able to ignore the ORDER BY clause */ + if( p->pOrderBy ){ +#if TREETRACE_ENABLED + TREETRACE(0x800,pParse,p, ("dropping superfluous ORDER BY:\n")); + if( sqlite3TreeTrace & 0x800 ){ + sqlite3TreeViewExprList(0, p->pOrderBy, 0, "ORDERBY"); + } +#endif + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3ExprListDelete, + p->pOrderBy); + testcase( pParse->earlyCleanup ); + p->pOrderBy = 0; + } p->selFlags &= ~SF_Distinct; + p->selFlags |= SF_NoopOrderBy; } sqlite3SelectPrep(pParse, p, 0); - memset(&sSort, 0, sizeof(sSort)); - sSort.pOrderBy = p->pOrderBy; - pTabList = p->pSrc; - if( pParse->nErr || db->mallocFailed ){ + if( pParse->nErr ){ goto select_end; } + assert( db->mallocFailed==0 ); assert( p->pEList!=0 ); - isAgg = (p->selFlags & SF_Aggregate)!=0; -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x104 ){ - SELECTTRACE(0x104,pParse,p, ("after name resolution:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x10 ){ + TREETRACE(0x10,pParse,p, ("after name resolution:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif - if( pDest->eDest==SRT_Output ){ - generateColumnNames(pParse, p); + /* If the SF_UFSrcCheck flag is set, then this function is being called + ** as part of populating the temp table for an UPDATE...FROM statement. + ** In this case, it is an error if the target object (pSrc->a[0]) name + ** or alias is duplicated within FROM clause (pSrc->a[1..n]). + ** + ** Postgres disallows this case too. The reason is that some other + ** systems handle this case differently, and not all the same way, + ** which is just confusing. To avoid this, we follow PG's lead and + ** disallow it altogether. */ + if( p->selFlags & SF_UFSrcCheck ){ + SrcItem *p0 = &p->pSrc->a[0]; + if( sameSrcAlias(p0, p->pSrc) ){ + sqlite3ErrorMsg(pParse, + "target object/alias may not appear in FROM clause: %s", + p0->zAlias ? p0->zAlias : p0->pTab->zName + ); + goto select_end; + } + + /* Clear the SF_UFSrcCheck flag. The check has already been performed, + ** and leaving this flag set can cause errors if a compound sub-query + ** in p->pSrc is flattened into this query and this function called + ** again as part of compound SELECT processing. */ + p->selFlags &= ~SF_UFSrcCheck; } - /* Try to various optimizations (flattening subqueries, and strength + if( pDest->eDest==SRT_Output ){ + sqlite3GenerateColumnNames(pParse, p); + } + +#ifndef SQLITE_OMIT_WINDOWFUNC + if( sqlite3WindowRewrite(pParse, p) ){ + assert( pParse->nErr ); + goto select_end; + } +#if TREETRACE_ENABLED + if( p->pWin && (sqlite3TreeTrace & 0x40)!=0 ){ + TREETRACE(0x40,pParse,p, ("after window rewrite:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif +#endif /* SQLITE_OMIT_WINDOWFUNC */ + pTabList = p->pSrc; + isAgg = (p->selFlags & SF_Aggregate)!=0; + memset(&sSort, 0, sizeof(sSort)); + sSort.pOrderBy = p->pOrderBy; + + /* Try to do various optimizations (flattening subqueries, and strength ** reduction of join operators) in the FROM clause up into the main query */ #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) for(i=0; !p->pPrior && inSrc; i++){ - struct SrcList_item *pItem = &pTabList->a[i]; + SrcItem *pItem = &pTabList->a[i]; Select *pSub = pItem->pSelect; Table *pTab = pItem->pTab; - /* Convert LEFT JOIN into JOIN if there are terms of the right table - ** of the LEFT JOIN used in the WHERE clause. + /* The expander should have already created transient Table objects + ** even for FROM clause elements such as subqueries that do not correspond + ** to a real table */ + assert( pTab!=0 ); + + /* Try to simplify joins: + ** + ** LEFT JOIN -> JOIN + ** RIGHT JOIN -> JOIN + ** FULL JOIN -> RIGHT JOIN + ** + ** If terms of the i-th table are used in the WHERE clause in such a + ** way that the i-th table cannot be the NULL row of a join, then + ** perform the appropriate simplification. This is called + ** "OUTER JOIN strength reduction" in the SQLite documentation. */ - if( (pItem->fg.jointype & JT_LEFT)!=0 - && sqlite3ExprImpliesNonNullRow(p->pWhere, pItem->iCursor) + if( (pItem->fg.jointype & (JT_LEFT|JT_LTORJ))!=0 + && sqlite3ExprImpliesNonNullRow(p->pWhere, pItem->iCursor, + pItem->fg.jointype & JT_LTORJ) && OptimizationEnabled(db, SQLITE_SimplifyJoin) ){ - SELECTTRACE(0x100,pParse,p, - ("LEFT-JOIN simplifies to JOIN on term %d\n",i)); - pItem->fg.jointype &= ~(JT_LEFT|JT_OUTER); - unsetJoinExpr(p->pWhere, pItem->iCursor); + if( pItem->fg.jointype & JT_LEFT ){ + if( pItem->fg.jointype & JT_RIGHT ){ + TREETRACE(0x1000,pParse,p, + ("FULL-JOIN simplifies to RIGHT-JOIN on term %d\n",i)); + pItem->fg.jointype &= ~JT_LEFT; + }else{ + TREETRACE(0x1000,pParse,p, + ("LEFT-JOIN simplifies to JOIN on term %d\n",i)); + pItem->fg.jointype &= ~(JT_LEFT|JT_OUTER); + } + } + if( pItem->fg.jointype & JT_LTORJ ){ + for(j=i+1; jnSrc; j++){ + SrcItem *pI2 = &pTabList->a[j]; + if( pI2->fg.jointype & JT_RIGHT ){ + if( pI2->fg.jointype & JT_LEFT ){ + TREETRACE(0x1000,pParse,p, + ("FULL-JOIN simplifies to LEFT-JOIN on term %d\n",j)); + pI2->fg.jointype &= ~JT_RIGHT; + }else{ + TREETRACE(0x1000,pParse,p, + ("RIGHT-JOIN simplifies to JOIN on term %d\n",j)); + pI2->fg.jointype &= ~(JT_RIGHT|JT_OUTER); + } + } + } + for(j=pTabList->nSrc-1; j>=i; j--){ + pTabList->a[j].fg.jointype &= ~JT_LTORJ; + if( pTabList->a[j].fg.jointype & JT_RIGHT ) break; + } + } + assert( pItem->iCursor>=0 ); + unsetJoinExpr(p->pWhere, pItem->iCursor, + pTabList->a[0].fg.jointype & JT_LTORJ); } - /* No futher action if this term of the FROM clause is no a subquery */ + /* No further action if this term of the FROM clause is not a subquery */ if( pSub==0 ) continue; /* Catch mismatch in the declared columns of a view and the number of @@ -126789,6 +147686,14 @@ SQLITE_PRIVATE int sqlite3Select( goto select_end; } + /* Do not attempt the usual optimizations (flattening and ORDER BY + ** elimination) on a MATERIALIZED common table expression because + ** a MATERIALIZED common table expression is an optimization fence. + */ + if( pItem->fg.isCte && pItem->u2.pCteUse->eM10d==M10d_Yes ){ + continue; + } + /* Do not try to flatten an aggregate subquery. ** ** Flattening an aggregate subquery is only possible if the outer query @@ -126799,6 +147704,43 @@ SQLITE_PRIVATE int sqlite3Select( if( (pSub->selFlags & SF_Aggregate)!=0 ) continue; assert( pSub->pGroupBy==0 ); + /* If a FROM-clause subquery has an ORDER BY clause that is not + ** really doing anything, then delete it now so that it does not + ** interfere with query flattening. See the discussion at + ** https://sqlite.org/forum/forumpost/2d76f2bcf65d256a + ** + ** Beware of these cases where the ORDER BY clause may not be safely + ** omitted: + ** + ** (1) There is also a LIMIT clause + ** (2) The subquery was added to help with window-function + ** processing + ** (3) The subquery is in the FROM clause of an UPDATE + ** (4) The outer query uses an aggregate function other than + ** the built-in count(), min(), or max(). + ** (5) The ORDER BY isn't going to accomplish anything because + ** one of: + ** (a) The outer query has a different ORDER BY clause + ** (b) The subquery is part of a join + ** See forum post 062d576715d277c8 + ** + ** Also retain the ORDER BY if the OmitOrderBy optimization is disabled. + */ + if( pSub->pOrderBy!=0 + && (p->pOrderBy!=0 || pTabList->nSrc>1) /* Condition (5) */ + && pSub->pLimit==0 /* Condition (1) */ + && (pSub->selFlags & SF_OrderByReqd)==0 /* Condition (2) */ + && (p->selFlags & SF_OrderByReqd)==0 /* Condition (3) and (4) */ + && OptimizationEnabled(db, SQLITE_OmitOrderBy) + ){ + TREETRACE(0x800,pParse,p, + ("omit superfluous ORDER BY on %r FROM-clause subquery\n",i+1)); + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))sqlite3ExprListDelete, + pSub->pOrderBy); + pSub->pOrderBy = 0; + } + /* If the outer query contains a "complex" result set (that is, ** if the result set of the outer query uses functions or subqueries) ** and if the subquery contains an ORDER BY clause and if @@ -126821,12 +147763,13 @@ SQLITE_PRIVATE int sqlite3Select( && i==0 && (p->selFlags & SF_ComplexResult)!=0 && (pTabList->nSrc==1 - || (pTabList->a[1].fg.jointype&(JT_LEFT|JT_CROSS))!=0) + || (pTabList->a[1].fg.jointype&(JT_OUTER|JT_CROSS))!=0) ){ continue; } if( flattenSubquery(pParse, p, i, isAgg) ){ + if( pParse->nErr ) goto select_end; /* This subquery can be absorbed into its parent. */ i = -1; } @@ -126844,9 +147787,9 @@ SQLITE_PRIVATE int sqlite3Select( */ if( p->pPrior ){ rc = multiSelect(pParse, p, pDest); -#if SELECTTRACE_ENABLED - SELECTTRACE(0x1,pParse,p,("end compound-select processing\n")); - if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){ +#if TREETRACE_ENABLED + TREETRACE(0x400,pParse,p,("end compound-select processing\n")); + if( (sqlite3TreeTrace & 0x400)!=0 && ExplainQueryPlanParent(pParse)==0 ){ sqlite3TreeViewSelect(0, p, 0); } #endif @@ -126855,12 +147798,40 @@ SQLITE_PRIVATE int sqlite3Select( } #endif + /* Do the WHERE-clause constant propagation optimization if this is + ** a join. No need to speed time on this operation for non-join queries + ** as the equivalent optimization will be handled by query planner in + ** sqlite3WhereBegin(). + */ + if( p->pWhere!=0 + && p->pWhere->op==TK_AND + && OptimizationEnabled(db, SQLITE_PropagateConst) + && propagateConstants(pParse, p) + ){ +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x2000 ){ + TREETRACE(0x2000,pParse,p,("After constant propagation:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif + }else{ + TREETRACE(0x2000,pParse,p,("Constant propagation not helpful\n")); + } + + if( OptimizationEnabled(db, SQLITE_QueryFlattener|SQLITE_CountOfView) + && countOfViewOptimization(pParse, p) + ){ + if( db->mallocFailed ) goto select_end; + pTabList = p->pSrc; + } + /* For each term in the FROM clause, do two things: ** (1) Authorized unreferenced tables ** (2) Generate code for all sub-queries */ for(i=0; inSrc; i++){ - struct SrcList_item *pItem = &pTabList->a[i]; + SrcItem *pItem = &pTabList->a[i]; + SrcItem *pPrior; SelectDest dest; Select *pSub; #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) @@ -126883,7 +147854,7 @@ SQLITE_PRIVATE int sqlite3Select( ** assume the column name is non-NULL and segfault. The use of an empty ** string for the fake column name seems safer. */ - if( pItem->colUsed==0 ){ + if( pItem->colUsed==0 && pItem->zName!=0 ){ sqlite3AuthCheck(pParse, SQLITE_READ, pItem->zName, "", pItem->zDatabase); } @@ -126893,22 +147864,8 @@ SQLITE_PRIVATE int sqlite3Select( pSub = pItem->pSelect; if( pSub==0 ) continue; - /* Sometimes the code for a subquery will be generated more than - ** once, if the subquery is part of the WHERE clause in a LEFT JOIN, - ** for example. In that case, do not regenerate the code to manifest - ** a view or the co-routine to implement a view. The first instance - ** is sufficient, though the subroutine to manifest the view does need - ** to be invoked again. */ - if( pItem->addrFillSub ){ - if( pItem->fg.viaCoroutine==0 ){ - /* The subroutine that manifests the view might be a one-time routine, - ** or it might need to be rerun on each iteration because it - ** encodes a correlated subquery. */ - testcase( sqlite3VdbeGetOp(v, pItem->addrFillSub)->opcode==OP_Once ); - sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub); - } - continue; - } + /* The code for a subquery should only be generated once. */ + assert( pItem->addrFillSub==0 ); /* Increment Parse.nHeight by the height of the largest expression ** tree referred to by this, the parent select. The child select @@ -126923,46 +147880,55 @@ SQLITE_PRIVATE int sqlite3Select( ** inside the subquery. This can help the subquery to run more efficiently. */ if( OptimizationEnabled(db, SQLITE_PushDown) - && pushDownWhereTerms(pParse, pSub, p->pWhere, pItem->iCursor, - (pItem->fg.jointype & JT_OUTER)!=0) + && (pItem->fg.isCte==0 + || (pItem->u2.pCteUse->eM10d!=M10d_Yes && pItem->u2.pCteUse->nUse<2)) + && pushDownWhereTerms(pParse, pSub, p->pWhere, pTabList, i) ){ -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x100 ){ - SELECTTRACE(0x100,pParse,p,("After WHERE-clause push-down:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x4000 ){ + TREETRACE(0x4000,pParse,p, + ("After WHERE-clause push-down into subquery %d:\n", pSub->selId)); sqlite3TreeViewSelect(0, p, 0); } #endif + assert( pItem->pSelect && (pItem->pSelect->selFlags & SF_PushDown)!=0 ); }else{ - SELECTTRACE(0x100,pParse,p,("Push-down not possible\n")); + TREETRACE(0x4000,pParse,p,("Push-down not possible\n")); + } + + /* Convert unused result columns of the subquery into simple NULL + ** expressions, to avoid unneeded searching and computation. + */ + if( OptimizationEnabled(db, SQLITE_NullUnusedCols) + && disableUnusedSubqueryResultColumns(pItem) + ){ +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x4000 ){ + TREETRACE(0x4000,pParse,p, + ("Change unused result columns to NULL for subquery %d:\n", + pSub->selId)); + sqlite3TreeViewSelect(0, p, 0); + } +#endif } zSavedAuthContext = pParse->zAuthContext; pParse->zAuthContext = pItem->zName; /* Generate code to implement the subquery - ** - ** The subquery is implemented as a co-routine if the subquery is - ** guaranteed to be the outer loop (so that it does not need to be - ** computed more than once) - ** - ** TODO: Are there other reasons beside (1) to use a co-routine - ** implementation? */ - if( i==0 - && (pTabList->nSrc==1 - || (pTabList->a[1].fg.jointype&(JT_LEFT|JT_CROSS))!=0) /* (1) */ - ){ + if( fromClauseTermCanBeCoroutine(pParse, pTabList, i, p->selFlags) ){ /* Implement a co-routine that will return a single row of the result ** set on each invocation. */ int addrTop = sqlite3VdbeCurrentAddr(v)+1; - + pItem->regReturn = ++pParse->nMem; sqlite3VdbeAddOp3(v, OP_InitCoroutine, pItem->regReturn, 0, addrTop); - VdbeComment((v, "%s", pItem->pTab->zName)); + VdbeComment((v, "%!S", pItem)); pItem->addrFillSub = addrTop; sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn); - ExplainQueryPlan((pParse, 1, "CO-ROUTINE 0x%p", pSub)); + ExplainQueryPlan((pParse, 1, "CO-ROUTINE %!S", pItem)); sqlite3Select(pParse, pSub, &dest); pItem->pTab->nRowLogEst = pSub->nSelectRow; pItem->fg.viaCoroutine = 1; @@ -126970,46 +147936,67 @@ SQLITE_PRIVATE int sqlite3Select( sqlite3VdbeEndCoroutine(v, pItem->regReturn); sqlite3VdbeJumpHere(v, addrTop-1); sqlite3ClearTempRegCache(pParse); + }else if( pItem->fg.isCte && pItem->u2.pCteUse->addrM9e>0 ){ + /* This is a CTE for which materialization code has already been + ** generated. Invoke the subroutine to compute the materialization, + ** the make the pItem->iCursor be a copy of the ephemeral table that + ** holds the result of the materialization. */ + CteUse *pCteUse = pItem->u2.pCteUse; + sqlite3VdbeAddOp2(v, OP_Gosub, pCteUse->regRtn, pCteUse->addrM9e); + if( pItem->iCursor!=pCteUse->iCur ){ + sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pCteUse->iCur); + VdbeComment((v, "%!S", pItem)); + } + pSub->nSelectRow = pCteUse->nRowEst; + }else if( (pPrior = isSelfJoinView(pTabList, pItem, 0, i))!=0 ){ + /* This view has already been materialized by a prior entry in + ** this same FROM clause. Reuse it. */ + if( pPrior->addrFillSub ){ + sqlite3VdbeAddOp2(v, OP_Gosub, pPrior->regReturn, pPrior->addrFillSub); + } + sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor); + pSub->nSelectRow = pPrior->pSelect->nSelectRow; }else{ - /* Generate a subroutine that will fill an ephemeral table with - ** the content of this subquery. pItem->addrFillSub will point - ** to the address of the generated subroutine. pItem->regReturn - ** is a register allocated to hold the subroutine return address - */ + /* Materialize the view. If the view is not correlated, generate a + ** subroutine to do the materialization so that subsequent uses of + ** the same view can reuse the materialization. */ int topAddr; int onceAddr = 0; - int retAddr; - struct SrcList_item *pPrior; +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrExplain; +#endif - assert( pItem->addrFillSub==0 ); pItem->regReturn = ++pParse->nMem; - topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn); + topAddr = sqlite3VdbeAddOp0(v, OP_Goto); pItem->addrFillSub = topAddr+1; + pItem->fg.isMaterialized = 1; if( pItem->fg.isCorrelated==0 ){ /* If the subquery is not correlated and if we are not inside of ** a trigger, then we only need to compute the value of the subquery ** once. */ onceAddr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); - VdbeComment((v, "materialize \"%s\"", pItem->pTab->zName)); + VdbeComment((v, "materialize %!S", pItem)); }else{ - VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName)); - } - pPrior = isSelfJoinView(pTabList, pItem); - if( pPrior ){ - sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor); - assert( pPrior->pSelect!=0 ); - pSub->nSelectRow = pPrior->pSelect->nSelectRow; - }else{ - sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); - ExplainQueryPlan((pParse, 1, "MATERIALIZE 0x%p", pSub)); - sqlite3Select(pParse, pSub, &dest); + VdbeNoopComment((v, "materialize %!S", pItem)); } + sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); + + ExplainQueryPlan2(addrExplain, (pParse, 1, "MATERIALIZE %!S", pItem)); + sqlite3Select(pParse, pSub, &dest); pItem->pTab->nRowLogEst = pSub->nSelectRow; if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr); - retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn); - VdbeComment((v, "end %s", pItem->pTab->zName)); - sqlite3VdbeChangeP1(v, topAddr, retAddr); + sqlite3VdbeAddOp2(v, OP_Return, pItem->regReturn, topAddr+1); + VdbeComment((v, "end %!S", pItem)); + sqlite3VdbeScanStatusRange(v, addrExplain, addrExplain, -1); + sqlite3VdbeJumpHere(v, topAddr); sqlite3ClearTempRegCache(pParse); + if( pItem->fg.isCte && pItem->fg.isCorrelated==0 ){ + CteUse *pCteUse = pItem->u2.pCteUse; + pCteUse->addrM9e = pItem->addrFillSub; + pCteUse->regRtn = pItem->regReturn; + pCteUse->iCur = pItem->iCursor; + pCteUse->nRowEst = pSub->nSelectRow; + } } if( db->mallocFailed ) goto select_end; pParse->nHeight -= sqlite3SelectExprHeight(p); @@ -127025,24 +148012,14 @@ SQLITE_PRIVATE int sqlite3Select( pHaving = p->pHaving; sDistinct.isTnct = (p->selFlags & SF_Distinct)!=0; -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x400 ){ - SELECTTRACE(0x400,pParse,p,("After all FROM-clause analysis:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x8000 ){ + TREETRACE(0x8000,pParse,p,("After all FROM-clause analysis:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif -#ifdef SQLITE_COUNTOFVIEW_OPTIMIZATION - if( OptimizationEnabled(db, SQLITE_QueryFlattener|SQLITE_CountOfView) - && countOfViewOptimization(pParse, p) - ){ - if( db->mallocFailed ) goto select_end; - pEList = p->pEList; - pTabList = p->pSrc; - } -#endif - - /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and + /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and ** if the select-list is the same as the ORDER BY list, then this query ** can be rewritten as a GROUP BY. In other words, this: ** @@ -127052,24 +148029,29 @@ SQLITE_PRIVATE int sqlite3Select( ** ** SELECT xyz FROM ... GROUP BY xyz ORDER BY xyz ** - ** The second form is preferred as a single index (or temp-table) may be - ** used for both the ORDER BY and DISTINCT processing. As originally - ** written the query must use a temp-table for at least one of the ORDER + ** The second form is preferred as a single index (or temp-table) may be + ** used for both the ORDER BY and DISTINCT processing. As originally + ** written the query must use a temp-table for at least one of the ORDER ** BY and DISTINCT, and an index or separate temp-table for the other. */ - if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct + if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct && sqlite3ExprListCompare(sSort.pOrderBy, pEList, -1)==0 +#ifndef SQLITE_OMIT_WINDOWFUNC + && p->pWin==0 +#endif ){ p->selFlags &= ~SF_Distinct; pGroupBy = p->pGroupBy = sqlite3ExprListDup(db, pEList, 0); + p->selFlags |= SF_Aggregate; /* Notice that even thought SF_Distinct has been cleared from p->selFlags, ** the sDistinct.isTnct is still set. Hence, isTnct represents the ** original setting of the SF_Distinct flag, not the current setting */ assert( sDistinct.isTnct ); + sDistinct.isTnct = 2; -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x400 ){ - SELECTTRACE(0x400,pParse,p,("Transform DISTINCT into GROUP BY:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x20000 ){ + TREETRACE(0x20000,pParse,p,("Transform DISTINCT into GROUP BY:\n")); sqlite3TreeViewSelect(0, p, 0); } #endif @@ -127085,7 +148067,8 @@ SQLITE_PRIVATE int sqlite3Select( */ if( sSort.pOrderBy ){ KeyInfo *pKeyInfo; - pKeyInfo = keyInfoFromExprList(pParse, sSort.pOrderBy, 0, pEList->nExpr); + pKeyInfo = sqlite3KeyInfoFromExprList( + pParse, sSort.pOrderBy, 0, pEList->nExpr); sSort.iECursor = pParse->nTab++; sSort.addrSortIndex = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, @@ -127100,15 +148083,27 @@ SQLITE_PRIVATE int sqlite3Select( */ if( pDest->eDest==SRT_EphemTab ){ sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pDest->iSDParm, pEList->nExpr); + if( p->selFlags & SF_NestedFrom ){ + /* Delete or NULL-out result columns that will never be used */ + int ii; + for(ii=pEList->nExpr-1; ii>0 && pEList->a[ii].fg.bUsed==0; ii--){ + sqlite3ExprDelete(db, pEList->a[ii].pExpr); + sqlite3DbFree(db, pEList->a[ii].zEName); + pEList->nExpr--; + } + for(ii=0; iinExpr; ii++){ + if( pEList->a[ii].fg.bUsed==0 ) pEList->a[ii].pExpr->op = TK_NULL; + } + } } /* Set the limiter. */ - iEnd = sqlite3VdbeMakeLabel(v); + iEnd = sqlite3VdbeMakeLabel(pParse); if( (p->selFlags & SF_FixedLimit)==0 ){ p->nSelectRow = 320; /* 4 billion rows */ } - computeLimitRegisters(pParse, p, iEnd); + if( p->pLimit ) computeLimitRegisters(pParse, p, iEnd); if( p->iLimit==0 && sSort.addrSortIndex>=0 ){ sqlite3VdbeChangeOpcode(v, sSort.addrSortIndex, OP_SorterOpen); sSort.sortFlags |= SORTFLAG_UseSorter; @@ -127119,9 +148114,9 @@ SQLITE_PRIVATE int sqlite3Select( if( p->selFlags & SF_Distinct ){ sDistinct.tabTnct = pParse->nTab++; sDistinct.addrTnct = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, - sDistinct.tabTnct, 0, 0, - (char*)keyInfoFromExprList(pParse, p->pEList,0,0), - P4_KEYINFO); + sDistinct.tabTnct, 0, 0, + (char*)sqlite3KeyInfoFromExprList(pParse, p->pEList,0,0), + P4_KEYINFO); sqlite3VdbeChangeP5(v, BTREE_UNORDERED); sDistinct.eTnctType = WHERE_DISTINCT_UNORDERED; }else{ @@ -127130,14 +148125,21 @@ SQLITE_PRIVATE int sqlite3Select( if( !isAgg && pGroupBy==0 ){ /* No aggregate functions and no GROUP BY clause */ - u16 wctrlFlags = (sDistinct.isTnct ? WHERE_WANT_DISTINCT : 0); + u16 wctrlFlags = (sDistinct.isTnct ? WHERE_WANT_DISTINCT : 0) + | (p->selFlags & SF_FixedLimit); +#ifndef SQLITE_OMIT_WINDOWFUNC + Window *pWin = p->pWin; /* Main window object (or NULL) */ + if( pWin ){ + sqlite3WindowCodeInit(pParse, p); + } +#endif assert( WHERE_USE_LIMIT==SF_FixedLimit ); - wctrlFlags |= p->selFlags & SF_FixedLimit; + /* Begin the database scan. */ - SELECTTRACE(1,pParse,p,("WhereBegin\n")); + TREETRACE(0x2,pParse,p,("WhereBegin\n")); pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, sSort.pOrderBy, - p->pEList, wctrlFlags, p->nSelectRow); + p->pEList, p, wctrlFlags, p->nSelectRow); if( pWInfo==0 ) goto select_end; if( sqlite3WhereOutputRowCount(pWInfo) < p->nSelectRow ){ p->nSelectRow = sqlite3WhereOutputRowCount(pWInfo); @@ -127147,13 +148149,14 @@ SQLITE_PRIVATE int sqlite3Select( } if( sSort.pOrderBy ){ sSort.nOBSat = sqlite3WhereIsOrdered(pWInfo); - sSort.bOrderedInnerLoop = sqlite3WhereOrderedInnerLoop(pWInfo); + sSort.labelOBLopt = sqlite3WhereOrderByLimitOptLabel(pWInfo); if( sSort.nOBSat==sSort.pOrderBy->nExpr ){ sSort.pOrderBy = 0; } } + TREETRACE(0x2,pParse,p,("WhereBegin returns\n")); - /* If sorting index that was created by a prior OP_OpenEphemeral + /* If sorting index that was created by a prior OP_OpenEphemeral ** instruction ended up not being needed, then change the OP_OpenEphemeral ** into an OP_Noop. */ @@ -127161,15 +148164,38 @@ SQLITE_PRIVATE int sqlite3Select( sqlite3VdbeChangeToNoop(v, sSort.addrSortIndex); } - /* Use the standard inner loop. */ assert( p->pEList==pEList ); - selectInnerLoop(pParse, p, -1, &sSort, &sDistinct, pDest, - sqlite3WhereContinueLabel(pWInfo), - sqlite3WhereBreakLabel(pWInfo)); +#ifndef SQLITE_OMIT_WINDOWFUNC + if( pWin ){ + int addrGosub = sqlite3VdbeMakeLabel(pParse); + int iCont = sqlite3VdbeMakeLabel(pParse); + int iBreak = sqlite3VdbeMakeLabel(pParse); + int regGosub = ++pParse->nMem; - /* End the database scan loop. - */ - sqlite3WhereEnd(pWInfo); + sqlite3WindowCodeStep(pParse, p, pWInfo, regGosub, addrGosub); + + sqlite3VdbeAddOp2(v, OP_Goto, 0, iBreak); + sqlite3VdbeResolveLabel(v, addrGosub); + VdbeNoopComment((v, "inner-loop subroutine")); + sSort.labelOBLopt = 0; + selectInnerLoop(pParse, p, -1, &sSort, &sDistinct, pDest, iCont, iBreak); + sqlite3VdbeResolveLabel(v, iCont); + sqlite3VdbeAddOp1(v, OP_Return, regGosub); + VdbeComment((v, "end inner-loop subroutine")); + sqlite3VdbeResolveLabel(v, iBreak); + }else +#endif /* SQLITE_OMIT_WINDOWFUNC */ + { + /* Use the standard inner loop. */ + selectInnerLoop(pParse, p, -1, &sSort, &sDistinct, pDest, + sqlite3WhereContinueLabel(pWInfo), + sqlite3WhereBreakLabel(pWInfo)); + + /* End the database scan loop. + */ + TREETRACE(0x2,pParse,p,("WhereEnd\n")); + sqlite3WhereEnd(pWInfo); + } }else{ /* This case when there exist aggregate functions or a GROUP BY clause ** or both */ @@ -127201,38 +148227,63 @@ SQLITE_PRIVATE int sqlite3Select( } assert( 66==sqlite3LogEst(100) ); if( p->nSelectRow>66 ) p->nSelectRow = 66; + + /* If there is both a GROUP BY and an ORDER BY clause and they are + ** identical, then it may be possible to disable the ORDER BY clause + ** on the grounds that the GROUP BY will cause elements to come out + ** in the correct order. It also may not - the GROUP BY might use a + ** database index that causes rows to be grouped together as required + ** but not actually sorted. Either way, record the fact that the + ** ORDER BY and GROUP BY clauses are the same by setting the orderByGrp + ** variable. */ + if( sSort.pOrderBy && pGroupBy->nExpr==sSort.pOrderBy->nExpr ){ + int ii; + /* The GROUP BY processing doesn't care whether rows are delivered in + ** ASC or DESC order - only that each group is returned contiguously. + ** So set the ASC/DESC flags in the GROUP BY to match those in the + ** ORDER BY to maximize the chances of rows being delivered in an + ** order that makes the ORDER BY redundant. */ + for(ii=0; iinExpr; ii++){ + u8 sortFlags; + sortFlags = sSort.pOrderBy->a[ii].fg.sortFlags & KEYINFO_ORDER_DESC; + pGroupBy->a[ii].fg.sortFlags = sortFlags; + } + if( sqlite3ExprListCompare(pGroupBy, sSort.pOrderBy, -1)==0 ){ + orderByGrp = 1; + } + } }else{ assert( 0==sqlite3LogEst(1) ); p->nSelectRow = 0; } - /* If there is both a GROUP BY and an ORDER BY clause and they are - ** identical, then it may be possible to disable the ORDER BY clause - ** on the grounds that the GROUP BY will cause elements to come out - ** in the correct order. It also may not - the GROUP BY might use a - ** database index that causes rows to be grouped together as required - ** but not actually sorted. Either way, record the fact that the - ** ORDER BY and GROUP BY clauses are the same by setting the orderByGrp - ** variable. */ - if( sqlite3ExprListCompare(pGroupBy, sSort.pOrderBy, -1)==0 ){ - orderByGrp = 1; - } - /* Create a label to jump to when we want to abort the query */ - addrEnd = sqlite3VdbeMakeLabel(v); + addrEnd = sqlite3VdbeMakeLabel(pParse); /* Convert TK_COLUMN nodes into TK_AGG_COLUMN and make entries in ** sAggInfo for all TK_AGG_FUNCTION nodes in expressions of the ** SELECT statement. */ + pAggInfo = sqlite3DbMallocZero(db, sizeof(*pAggInfo) ); + if( pAggInfo ){ + sqlite3ParserAddCleanup(pParse, + (void(*)(sqlite3*,void*))agginfoFree, pAggInfo); + testcase( pParse->earlyCleanup ); + } + if( db->mallocFailed ){ + goto select_end; + } + pAggInfo->selId = p->selId; +#ifdef SQLITE_DEBUG + pAggInfo->pSelect = p; +#endif memset(&sNC, 0, sizeof(sNC)); sNC.pParse = pParse; sNC.pSrcList = pTabList; - sNC.uNC.pAggInfo = &sAggInfo; + sNC.uNC.pAggInfo = pAggInfo; VVA_ONLY( sNC.ncFlags = NC_UAggInfo; ) - sAggInfo.mnReg = pParse->nMem+1; - sAggInfo.nSortingColumn = pGroupBy ? pGroupBy->nExpr : 0; - sAggInfo.pGroupBy = pGroupBy; + pAggInfo->nSortingColumn = pGroupBy ? pGroupBy->nExpr : 0; + pAggInfo->pGroupBy = pGroupBy; sqlite3ExprAnalyzeAggList(&sNC, pEList); sqlite3ExprAnalyzeAggList(&sNC, sSort.pOrderBy); if( pHaving ){ @@ -127245,35 +148296,23 @@ SQLITE_PRIVATE int sqlite3Select( } sqlite3ExprAnalyzeAggregates(&sNC, pHaving); } - sAggInfo.nAccumulator = sAggInfo.nColumn; - if( p->pGroupBy==0 && p->pHaving==0 && sAggInfo.nFunc==1 ){ - minMaxFlag = minMaxQuery(db, sAggInfo.aFunc[0].pExpr, &pMinMaxOrderBy); + pAggInfo->nAccumulator = pAggInfo->nColumn; + if( p->pGroupBy==0 && p->pHaving==0 && pAggInfo->nFunc==1 ){ + minMaxFlag = minMaxQuery(db, pAggInfo->aFunc[0].pFExpr, &pMinMaxOrderBy); }else{ minMaxFlag = WHERE_ORDERBY_NORMAL; } - for(i=0; ix.pList); - sNC.ncFlags &= ~NC_InAggFunc; - } - sAggInfo.mxReg = pParse->nMem; + analyzeAggFuncArgs(pAggInfo, &sNC); if( db->mallocFailed ) goto select_end; -#if SELECTTRACE_ENABLED - if( sqlite3SelectTrace & 0x400 ){ - int ii; - SELECTTRACE(0x400,pParse,p,("After aggregate analysis:\n")); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x20 ){ + TREETRACE(0x20,pParse,p,("After aggregate analysis %p:\n", pAggInfo)); sqlite3TreeViewSelect(0, p, 0); - for(ii=0; iinFunc==1 + && pAggInfo->aFunc[0].iDistinct>=0 + && ALWAYS(pAggInfo->aFunc[0].pFExpr!=0) + && ALWAYS(ExprUseXList(pAggInfo->aFunc[0].pFExpr)) + && pAggInfo->aFunc[0].pFExpr->x.pList!=0 + ){ + Expr *pExpr = pAggInfo->aFunc[0].pFExpr->x.pList->a[0].pExpr; + pExpr = sqlite3ExprDup(db, pExpr, 0); + pDistinct = sqlite3ExprListDup(db, pGroupBy, 0); + pDistinct = sqlite3ExprListAppend(pParse, pDistinct, pExpr); + distFlag = pDistinct ? (WHERE_WANT_DISTINCT|WHERE_AGG_DISTINCT) : 0; + } /* If there is a GROUP BY clause we might need a sorting index to ** implement it. Allocate that sorting index now. If it turns out ** that we do not need it after all, the OP_SorterOpen instruction - ** will be converted into a Noop. + ** will be converted into a Noop. */ - sAggInfo.sortingIdx = pParse->nTab++; - pKeyInfo = keyInfoFromExprList(pParse, pGroupBy, 0, sAggInfo.nColumn); - addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen, - sAggInfo.sortingIdx, sAggInfo.nSortingColumn, + pAggInfo->sortingIdx = pParse->nTab++; + pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pGroupBy, + 0, pAggInfo->nColumn); + addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen, + pAggInfo->sortingIdx, pAggInfo->nSortingColumn, 0, (char*)pKeyInfo, P4_KEYINFO); /* Initialize memory locations used by GROUP BY aggregate processing @@ -127308,17 +148364,15 @@ SQLITE_PRIVATE int sqlite3Select( iUseFlag = ++pParse->nMem; iAbortFlag = ++pParse->nMem; regOutputRow = ++pParse->nMem; - addrOutputRow = sqlite3VdbeMakeLabel(v); + addrOutputRow = sqlite3VdbeMakeLabel(pParse); regReset = ++pParse->nMem; - addrReset = sqlite3VdbeMakeLabel(v); + addrReset = sqlite3VdbeMakeLabel(pParse); iAMem = pParse->nMem + 1; pParse->nMem += pGroupBy->nExpr; iBMem = pParse->nMem + 1; pParse->nMem += pGroupBy->nExpr; sqlite3VdbeAddOp2(v, OP_Integer, 0, iAbortFlag); VdbeComment((v, "clear abort flag")); - sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag); - VdbeComment((v, "indicate accumulator empty")); sqlite3VdbeAddOp3(v, OP_Null, 0, iAMem, iAMem+pGroupBy->nExpr-1); /* Begin a loop that will extract all source rows in GROUP BY order. @@ -127327,11 +148381,21 @@ SQLITE_PRIVATE int sqlite3Select( ** in the right order to begin with. */ sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset); - SELECTTRACE(1,pParse,p,("WhereBegin\n")); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pGroupBy, 0, - WHERE_GROUPBY | (orderByGrp ? WHERE_SORTBYGROUP : 0), 0 + TREETRACE(0x2,pParse,p,("WhereBegin\n")); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pGroupBy, pDistinct, + p, (sDistinct.isTnct==2 ? WHERE_DISTINCTBY : WHERE_GROUPBY) + | (orderByGrp ? WHERE_SORTBYGROUP : 0) | distFlag, 0 ); - if( pWInfo==0 ) goto select_end; + if( pWInfo==0 ){ + sqlite3ExprListDelete(db, pDistinct); + goto select_end; + } + if( pParse->pIdxEpr ){ + optimizeAggregateUseOfIndexedExpr(pParse, p, pAggInfo, &sNC); + } + assignAggregateRegisters(pParse, pAggInfo); + eDist = sqlite3WhereIsDistinct(pWInfo); + TREETRACE(0x2,pParse,p,("WhereBegin returns\n")); if( sqlite3WhereIsOrdered(pWInfo)==pGroupBy->nExpr ){ /* The optimizer is able to deliver rows in group by order so ** we do not have to sort. The OP_OpenEphemeral table will be @@ -127349,47 +148413,71 @@ SQLITE_PRIVATE int sqlite3Select( int nCol; int nGroupBy; - explainTempTable(pParse, +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrExp; /* Address of OP_Explain instruction */ +#endif + ExplainQueryPlan2(addrExp, (pParse, 0, "USE TEMP B-TREE FOR %s", (sDistinct.isTnct && (p->selFlags&SF_Distinct)==0) ? - "DISTINCT" : "GROUP BY"); + "DISTINCT" : "GROUP BY" + )); groupBySort = 1; nGroupBy = pGroupBy->nExpr; nCol = nGroupBy; j = nGroupBy; - for(i=0; i=j ){ + for(i=0; inColumn; i++){ + if( pAggInfo->aCol[i].iSorterColumn>=j ){ nCol++; j++; } } regBase = sqlite3GetTempRange(pParse, nCol); - sqlite3ExprCacheClear(pParse); sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0, 0); j = nGroupBy; - for(i=0; idirectMode = 1; + for(i=0; inColumn; i++){ + struct AggInfo_col *pCol = &pAggInfo->aCol[i]; if( pCol->iSorterColumn>=j ){ - int r1 = j + regBase; - sqlite3ExprCodeGetColumnToReg(pParse, - pCol->pTab, pCol->iColumn, pCol->iTable, r1); + sqlite3ExprCode(pParse, pCol->pCExpr, j + regBase); j++; } } + pAggInfo->directMode = 0; regRecord = sqlite3GetTempReg(pParse); + sqlite3VdbeScanStatusCounters(v, addrExp, 0, sqlite3VdbeCurrentAddr(v)); sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord); - sqlite3VdbeAddOp2(v, OP_SorterInsert, sAggInfo.sortingIdx, regRecord); + sqlite3VdbeAddOp2(v, OP_SorterInsert, pAggInfo->sortingIdx, regRecord); + sqlite3VdbeScanStatusRange(v, addrExp, sqlite3VdbeCurrentAddr(v)-2, -1); sqlite3ReleaseTempReg(pParse, regRecord); sqlite3ReleaseTempRange(pParse, regBase, nCol); + TREETRACE(0x2,pParse,p,("WhereEnd\n")); sqlite3WhereEnd(pWInfo); - sAggInfo.sortingIdxPTab = sortPTab = pParse->nTab++; + pAggInfo->sortingIdxPTab = sortPTab = pParse->nTab++; sortOut = sqlite3GetTempReg(pParse); + sqlite3VdbeScanStatusCounters(v, addrExp, sqlite3VdbeCurrentAddr(v), 0); sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol); - sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd); + sqlite3VdbeAddOp2(v, OP_SorterSort, pAggInfo->sortingIdx, addrEnd); VdbeComment((v, "GROUP BY sort")); VdbeCoverage(v); - sAggInfo.useSortingIdx = 1; - sqlite3ExprCacheClear(pParse); + pAggInfo->useSortingIdx = 1; + sqlite3VdbeScanStatusRange(v, addrExp, -1, sortPTab); + sqlite3VdbeScanStatusRange(v, addrExp, -1, pAggInfo->sortingIdx); + } + /* If there are entries in pAgggInfo->aFunc[] that contain subexpressions + ** that are indexed (and that were previously identified and tagged + ** in optimizeAggregateUseOfIndexedExpr()) then those subexpressions + ** must now be converted into a TK_AGG_COLUMN node so that the value + ** is correctly pulled from the index rather than being recomputed. */ + if( pParse->pIdxEpr ){ + aggregateConvertIndexedExprRefToColumn(pAggInfo); +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x20 ){ + TREETRACE(0x20, pParse, p, + ("AggInfo function expressions converted to reference index\n")); + sqlite3TreeViewSelect(0, p, 0); + printAggInfo(pAggInfo); + } +#endif } /* If the index or temporary table used by the GROUP BY sort @@ -127397,9 +148485,9 @@ SQLITE_PRIVATE int sqlite3Select( ** clause, cancel the ephemeral table open coded earlier. ** ** This is an optimization - the correct answer should result regardless. - ** Use the SQLITE_GroupByOrder flag with SQLITE_TESTCTRL_OPTIMIZER to + ** Use the SQLITE_GroupByOrder flag with SQLITE_TESTCTRL_OPTIMIZER to ** disable this optimization for testing purposes. */ - if( orderByGrp && OptimizationEnabled(db, SQLITE_GroupByOrder) + if( orderByGrp && OptimizationEnabled(db, SQLITE_GroupByOrder) && (groupBySort || sqlite3WhereIsSorted(pWInfo)) ){ sSort.pOrderBy = 0; @@ -127412,16 +148500,15 @@ SQLITE_PRIVATE int sqlite3Select( ** from the previous row currently stored in a0, a1, a2... */ addrTopOfLoop = sqlite3VdbeCurrentAddr(v); - sqlite3ExprCacheClear(pParse); if( groupBySort ){ - sqlite3VdbeAddOp3(v, OP_SorterData, sAggInfo.sortingIdx, + sqlite3VdbeAddOp3(v, OP_SorterData, pAggInfo->sortingIdx, sortOut, sortPTab); } for(j=0; jnExpr; j++){ if( groupBySort ){ sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j); }else{ - sAggInfo.directMode = 1; + pAggInfo->directMode = 1; sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j); } } @@ -127451,19 +148538,21 @@ SQLITE_PRIVATE int sqlite3Select( ** the current row */ sqlite3VdbeJumpHere(v, addr1); - updateAccumulator(pParse, &sAggInfo); + updateAccumulator(pParse, iUseFlag, pAggInfo, eDist); sqlite3VdbeAddOp2(v, OP_Integer, 1, iUseFlag); VdbeComment((v, "indicate data in accumulator")); /* End of the loop */ if( groupBySort ){ - sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop); + sqlite3VdbeAddOp2(v, OP_SorterNext, pAggInfo->sortingIdx,addrTopOfLoop); VdbeCoverage(v); }else{ + TREETRACE(0x2,pParse,p,("WhereEnd\n")); sqlite3WhereEnd(pWInfo); sqlite3VdbeChangeToNoop(v, addrSortingIdx); } + sqlite3ExprListDelete(db, pDistinct); /* Output the final row of result */ @@ -127491,7 +148580,7 @@ SQLITE_PRIVATE int sqlite3Select( VdbeCoverage(v); VdbeComment((v, "Groupby result generator entry point")); sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); - finalizeAggFunctions(pParse, &sAggInfo); + finalizeAggFunctions(pParse, pAggInfo); sqlite3ExprIfFalse(pParse, pHaving, addrOutputRow+1, SQLITE_JUMPIFNULL); selectInnerLoop(pParse, p, -1, &sSort, &sDistinct, pDest, @@ -127502,14 +148591,19 @@ SQLITE_PRIVATE int sqlite3Select( /* Generate a subroutine that will reset the group-by accumulator */ sqlite3VdbeResolveLabel(v, addrReset); - resetAccumulator(pParse, &sAggInfo); + resetAccumulator(pParse, pAggInfo); + sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag); + VdbeComment((v, "indicate accumulator empty")); sqlite3VdbeAddOp1(v, OP_Return, regReset); - + + if( distFlag!=0 && eDist!=WHERE_DISTINCT_NOOP ){ + struct AggInfo_func *pF = &pAggInfo->aFunc[0]; + fixDistinctOpenEph(pParse, eDist, pF->iDistinct, pF->iDistAddr); + } } /* endif pGroupBy. Begin aggregate queries without GROUP BY: */ else { -#ifndef SQLITE_OMIT_BTREECOUNT Table *pTab; - if( (pTab = isSimpleCount(p, &sAggInfo))!=0 ){ + if( (pTab = isSimpleCount(p, pAggInfo))!=0 ){ /* If isSimpleCount() returns a pointer to a Table structure, then ** the SQL statement is of the form: ** @@ -127528,7 +148622,7 @@ SQLITE_PRIVATE int sqlite3Select( Index *pIdx; /* Iterator variable */ KeyInfo *pKeyInfo = 0; /* Keyinfo for scanned index */ Index *pBest = 0; /* Best index found so far */ - int iRoot = pTab->tnum; /* Root page of scanned b-tree */ + Pgno iRoot = pTab->tnum; /* Root page of scanned b-tree */ sqlite3CodeVerifySchema(pParse, iDb); sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); @@ -127539,17 +148633,19 @@ SQLITE_PRIVATE int sqlite3Select( ** ** (2013-10-03) Do not count the entries in a partial index. ** - ** In practice the KeyInfo structure will not be used. It is only + ** In practice the KeyInfo structure will not be used. It is only ** passed to keep OP_OpenRead happy. */ if( !HasRowid(pTab) ) pBest = sqlite3PrimaryKeyIndex(pTab); - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->bUnordered==0 - && pIdx->szIdxRowszTabRow - && pIdx->pPartIdxWhere==0 - && (!pBest || pIdx->szIdxRowszIdxRow) - ){ - pBest = pIdx; + if( !p->pSrc->a[0].fg.notIndexed ){ + for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + if( pIdx->bUnordered==0 + && pIdx->szIdxRowszTabRow + && pIdx->pPartIdxWhere==0 + && (!pBest || pIdx->szIdxRowszIdxRow) + ){ + pBest = pIdx; + } } } if( pBest ){ @@ -127558,22 +148654,55 @@ SQLITE_PRIVATE int sqlite3Select( } /* Open a read-only cursor, execute the OP_Count, close the cursor. */ - sqlite3VdbeAddOp4Int(v, OP_OpenRead, iCsr, iRoot, iDb, 1); + sqlite3VdbeAddOp4Int(v, OP_OpenRead, iCsr, (int)iRoot, iDb, 1); if( pKeyInfo ){ sqlite3VdbeChangeP4(v, -1, (char *)pKeyInfo, P4_KEYINFO); } - sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem); + assignAggregateRegisters(pParse, pAggInfo); + sqlite3VdbeAddOp2(v, OP_Count, iCsr, AggInfoFuncReg(pAggInfo,0)); sqlite3VdbeAddOp1(v, OP_Close, iCsr); explainSimpleCount(pParse, pTab, pBest); - }else -#endif /* SQLITE_OMIT_BTREECOUNT */ - { + }else{ + int regAcc = 0; /* "populate accumulators" flag */ + ExprList *pDistinct = 0; + u16 distFlag = 0; + int eDist; + + /* If there are accumulator registers but no min() or max() functions + ** without FILTER clauses, allocate register regAcc. Register regAcc + ** will contain 0 the first time the inner loop runs, and 1 thereafter. + ** The code generated by updateAccumulator() uses this to ensure + ** that the accumulator registers are (a) updated only once if + ** there are no min() or max functions or (b) always updated for the + ** first row visited by the aggregate, so that they are updated at + ** least once even if the FILTER clause means the min() or max() + ** function visits zero rows. */ + if( pAggInfo->nAccumulator ){ + for(i=0; inFunc; i++){ + if( ExprHasProperty(pAggInfo->aFunc[i].pFExpr, EP_WinFunc) ){ + continue; + } + if( pAggInfo->aFunc[i].pFunc->funcFlags&SQLITE_FUNC_NEEDCOLL ){ + break; + } + } + if( i==pAggInfo->nFunc ){ + regAcc = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 0, regAcc); + } + }else if( pAggInfo->nFunc==1 && pAggInfo->aFunc[0].iDistinct>=0 ){ + assert( ExprUseXList(pAggInfo->aFunc[0].pFExpr) ); + pDistinct = pAggInfo->aFunc[0].pFExpr->x.pList; + distFlag = pDistinct ? (WHERE_WANT_DISTINCT|WHERE_AGG_DISTINCT) : 0; + } + assignAggregateRegisters(pParse, pAggInfo); + /* This case runs if the aggregate has no GROUP BY clause. The ** processing is much simpler since there is only a single row ** of output. */ assert( p->pGroupBy==0 ); - resetAccumulator(pParse, &sAggInfo); + resetAccumulator(pParse, pAggInfo); /* If this query is a candidate for the min/max optimization, then ** minMaxFlag will have been previously set to either @@ -127583,29 +148712,38 @@ SQLITE_PRIVATE int sqlite3Select( assert( minMaxFlag==WHERE_ORDERBY_NORMAL || pMinMaxOrderBy!=0 ); assert( pMinMaxOrderBy==0 || pMinMaxOrderBy->nExpr==1 ); - SELECTTRACE(1,pParse,p,("WhereBegin\n")); + TREETRACE(0x2,pParse,p,("WhereBegin\n")); pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pMinMaxOrderBy, - 0, minMaxFlag, 0); + pDistinct, p, minMaxFlag|distFlag, 0); if( pWInfo==0 ){ goto select_end; } - updateAccumulator(pParse, &sAggInfo); - if( sqlite3WhereIsOrdered(pWInfo)>0 ){ - sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo)); - VdbeComment((v, "%s() by index", - (minMaxFlag==WHERE_ORDERBY_MIN?"min":"max"))); + TREETRACE(0x2,pParse,p,("WhereBegin returns\n")); + eDist = sqlite3WhereIsDistinct(pWInfo); + updateAccumulator(pParse, regAcc, pAggInfo, eDist); + if( eDist!=WHERE_DISTINCT_NOOP ){ + struct AggInfo_func *pF = pAggInfo->aFunc; + if( pF ){ + fixDistinctOpenEph(pParse, eDist, pF->iDistinct, pF->iDistAddr); + } } + + if( regAcc ) sqlite3VdbeAddOp2(v, OP_Integer, 1, regAcc); + if( minMaxFlag ){ + sqlite3WhereMinMaxOptEarlyOut(v, pWInfo); + } + TREETRACE(0x2,pParse,p,("WhereEnd\n")); sqlite3WhereEnd(pWInfo); - finalizeAggFunctions(pParse, &sAggInfo); + finalizeAggFunctions(pParse, pAggInfo); } sSort.pOrderBy = 0; sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL); - selectInnerLoop(pParse, p, -1, 0, 0, + selectInnerLoop(pParse, p, -1, 0, 0, pDest, addrEnd, addrEnd); } sqlite3VdbeResolveLabel(v, addrEnd); - + } /* endif aggregate query */ if( sDistinct.eTnctType==WHERE_DISTINCT_UNORDERED ){ @@ -127616,8 +148754,6 @@ SQLITE_PRIVATE int sqlite3Select( ** and send them to the callback one by one. */ if( sSort.pOrderBy ){ - explainTempTable(pParse, - sSort.nOBSat>0 ? "RIGHT PART OF ORDER BY":"ORDER BY"); assert( p->pEList==pEList ); generateSortTail(pParse, p, &sSort, pEList->nExpr, pDest); } @@ -127634,12 +148770,29 @@ SQLITE_PRIVATE int sqlite3Select( ** successful coding of the SELECT. */ select_end: + assert( db->mallocFailed==0 || db->mallocFailed==1 ); + assert( db->mallocFailed==0 || pParse->nErr!=0 ); sqlite3ExprListDelete(db, pMinMaxOrderBy); - sqlite3DbFree(db, sAggInfo.aCol); - sqlite3DbFree(db, sAggInfo.aFunc); -#if SELECTTRACE_ENABLED - SELECTTRACE(0x1,pParse,p,("end processing\n")); - if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){ +#ifdef SQLITE_DEBUG + if( pAggInfo && !db->mallocFailed ){ + for(i=0; inColumn; i++){ + Expr *pExpr = pAggInfo->aCol[i].pCExpr; + if( pExpr==0 ) continue; + assert( pExpr->pAggInfo==pAggInfo ); + assert( pExpr->iAgg==i ); + } + for(i=0; inFunc; i++){ + Expr *pExpr = pAggInfo->aFunc[i].pFExpr; + assert( pExpr!=0 ); + assert( pExpr->pAggInfo==pAggInfo ); + assert( pExpr->iAgg==i ); + } + } +#endif + +#if TREETRACE_ENABLED + TREETRACE(0x1,pParse,p,("end processing\n")); + if( (sqlite3TreeTrace & 0x40000)!=0 && ExplainQueryPlanParent(pParse)==0 ){ sqlite3TreeViewSelect(0, p, 0); } #endif @@ -127707,7 +148860,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){ if( p->nData + need > p->nAlloc ){ char **azNew; p->nAlloc = p->nAlloc*2 + need; - azNew = sqlite3_realloc64( p->azResult, sizeof(char*)*p->nAlloc ); + azNew = sqlite3Realloc( p->azResult, sizeof(char*)*p->nAlloc ); if( azNew==0 ) goto malloc_failed; p->azResult = azNew; } @@ -127760,7 +148913,7 @@ malloc_failed: ** at the conclusion of the call. ** ** The result that is written to ***pazResult is held in memory obtained -** from malloc(). But the caller cannot free this memory directly. +** from malloc(). But the caller cannot free this memory directly. ** Instead, the entire table should be passed to sqlite3_free_table() when ** the calling procedure is finished using it. */ @@ -127816,7 +148969,7 @@ SQLITE_API int sqlite3_get_table( } if( res.nAlloc>res.nData ){ char **azNew; - azNew = sqlite3_realloc64( res.azResult, sizeof(char*)*res.nData ); + azNew = sqlite3Realloc( res.azResult, sizeof(char*)*res.nData ); if( azNew==0 ){ sqlite3_free_table(&res.azResult[1]); db->errCode = SQLITE_NOMEM; @@ -127878,6 +149031,7 @@ SQLITE_PRIVATE void sqlite3DeleteTriggerStep(sqlite3 *db, TriggerStep *pTriggerS sqlite3SelectDelete(db, pTmp->pSelect); sqlite3IdListDelete(db, pTmp->pIdList); sqlite3UpsertDelete(db, pTmp->pUpsert); + sqlite3SrcListDelete(db, pTmp->pFrom); sqlite3DbFree(db, pTmp->zSpan); sqlite3DbFree(db, pTmp); @@ -127885,7 +149039,7 @@ SQLITE_PRIVATE void sqlite3DeleteTriggerStep(sqlite3 *db, TriggerStep *pTriggerS } /* -** Given table pTab, return a list of all the triggers attached to +** Given table pTab, return a list of all the triggers attached to ** the table. The list is connected by Trigger.pNext pointers. ** ** All of the triggers on pTab that are in the same database as pTab @@ -127899,28 +149053,48 @@ SQLITE_PRIVATE void sqlite3DeleteTriggerStep(sqlite3 *db, TriggerStep *pTriggerS ** pTab as well as the triggers lised in pTab->pTrigger. */ SQLITE_PRIVATE Trigger *sqlite3TriggerList(Parse *pParse, Table *pTab){ - Schema * const pTmpSchema = pParse->db->aDb[1].pSchema; - Trigger *pList = 0; /* List of triggers to return */ + Schema *pTmpSchema; /* Schema of the pTab table */ + Trigger *pList; /* List of triggers to return */ + HashElem *p; /* Loop variable for TEMP triggers */ - if( pParse->disableTriggers ){ - return 0; - } - - if( pTmpSchema!=pTab->pSchema ){ - HashElem *p; - assert( sqlite3SchemaMutexHeld(pParse->db, 0, pTmpSchema) ); - for(p=sqliteHashFirst(&pTmpSchema->trigHash); p; p=sqliteHashNext(p)){ - Trigger *pTrig = (Trigger *)sqliteHashData(p); - if( pTrig->pTabSchema==pTab->pSchema - && 0==sqlite3StrICmp(pTrig->table, pTab->zName) - ){ - pTrig->pNext = (pList ? pList : pTab->pTrigger); - pList = pTrig; - } + assert( pParse->disableTriggers==0 ); + pTmpSchema = pParse->db->aDb[1].pSchema; + p = sqliteHashFirst(&pTmpSchema->trigHash); + pList = pTab->pTrigger; + while( p ){ + Trigger *pTrig = (Trigger *)sqliteHashData(p); + if( pTrig->pTabSchema==pTab->pSchema + && pTrig->table + && 0==sqlite3StrICmp(pTrig->table, pTab->zName) + && (pTrig->pTabSchema!=pTmpSchema || pTrig->bReturning) + ){ + pTrig->pNext = pList; + pList = pTrig; + }else if( pTrig->op==TK_RETURNING ){ +#ifndef SQLITE_OMIT_VIRTUALTABLE + assert( pParse->db->pVtabCtx==0 ); +#endif + assert( pParse->bReturning ); + assert( &(pParse->u1.pReturning->retTrig) == pTrig ); + pTrig->table = pTab->zName; + pTrig->pTabSchema = pTab->pSchema; + pTrig->pNext = pList; + pList = pTrig; } + p = sqliteHashNext(p); } - - return (pList ? pList : pTab->pTrigger); +#if 0 + if( pList ){ + Trigger *pX; + printf("Triggers for %s:", pTab->zName); + for(pX=pList; pX; pX=pX->pNext){ + printf(" %s", pX->zName); + } + printf("\n"); + fflush(stdout); + } +#endif + return pList; } /* @@ -127980,7 +149154,7 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( ** ^^^^^^^^ ** ** To maintain backwards compatibility, ignore the database - ** name on pTableName if we are reparsing out of SQLITE_MASTER. + ** name on pTableName if we are reparsing out of the schema table */ if( db->init.busy && iDb!=1 ){ sqlite3DbFree(db, pTableName->a[0].zDatabase); @@ -128008,39 +149182,35 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( pTab = sqlite3SrcListLookup(pParse, pTableName); if( !pTab ){ /* The table does not exist. */ - if( db->init.iDb==1 ){ - /* Ticket #3810. - ** Normally, whenever a table is dropped, all associated triggers are - ** dropped too. But if a TEMP trigger is created on a non-TEMP table - ** and the table is dropped by a different database connection, the - ** trigger is not visible to the database connection that does the - ** drop so the trigger cannot be dropped. This results in an - ** "orphaned trigger" - a trigger whose associated table is missing. - */ - db->init.orphanTrigger = 1; - } - goto trigger_cleanup; + goto trigger_orphan_error; } if( IsVirtual(pTab) ){ sqlite3ErrorMsg(pParse, "cannot create triggers on virtual tables"); - goto trigger_cleanup; + goto trigger_orphan_error; } /* Check that the trigger name is not reserved and that no trigger of the ** specified name exists */ zName = sqlite3NameFromToken(db, pName); - if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ + if( zName==0 ){ + assert( db->mallocFailed ); + goto trigger_cleanup; + } + if( sqlite3CheckObjectName(pParse, zName, "trigger", pTab->zName) ){ goto trigger_cleanup; } assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){ - if( !noErr ){ - sqlite3ErrorMsg(pParse, "trigger %T already exists", pName); - }else{ - assert( !db->init.busy ); - sqlite3CodeVerifySchema(pParse, iDb); + if( !IN_RENAME_OBJECT ){ + if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){ + if( !noErr ){ + sqlite3ErrorMsg(pParse, "trigger %T already exists", pName); + }else{ + assert( !db->init.busy ); + sqlite3CodeVerifySchema(pParse, iDb); + VVA_ONLY( pParse->ifNotExists = 1; ) + } + goto trigger_cleanup; } - goto trigger_cleanup; } /* Do not create a trigger on a system table */ @@ -128052,19 +149222,19 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( /* INSTEAD of triggers are only for views and views only support INSTEAD ** of triggers. */ - if( pTab->pSelect && tr_tm!=TK_INSTEAD ){ - sqlite3ErrorMsg(pParse, "cannot create %s trigger on view: %S", - (tr_tm == TK_BEFORE)?"BEFORE":"AFTER", pTableName, 0); - goto trigger_cleanup; + if( IsView(pTab) && tr_tm!=TK_INSTEAD ){ + sqlite3ErrorMsg(pParse, "cannot create %s trigger on view: %S", + (tr_tm == TK_BEFORE)?"BEFORE":"AFTER", pTableName->a); + goto trigger_orphan_error; } - if( !pTab->pSelect && tr_tm==TK_INSTEAD ){ + if( !IsView(pTab) && tr_tm==TK_INSTEAD ){ sqlite3ErrorMsg(pParse, "cannot create INSTEAD OF" - " trigger on table: %S", pTableName, 0); - goto trigger_cleanup; + " trigger on table: %S", pTableName->a); + goto trigger_orphan_error; } #ifndef SQLITE_OMIT_AUTHORIZATION - { + if( !IN_RENAME_OBJECT ){ int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema); int code = SQLITE_CREATE_TRIGGER; const char *zDb = db->aDb[iTabDb].zDbSName; @@ -128098,8 +149268,15 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( pTrigger->pTabSchema = pTab->pSchema; pTrigger->op = (u8)op; pTrigger->tr_tm = tr_tm==TK_BEFORE ? TRIGGER_BEFORE : TRIGGER_AFTER; - pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE); - pTrigger->pColumns = sqlite3IdListDup(db, pColumns); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, pTrigger->table, pTableName->a[0].zName); + pTrigger->pWhen = pWhen; + pWhen = 0; + }else{ + pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE); + } + pTrigger->pColumns = pColumns; + pColumns = 0; assert( pParse->pNewTrigger==0 ); pParse->pNewTrigger = pTrigger; @@ -128113,6 +149290,23 @@ trigger_cleanup: }else{ assert( pParse->pNewTrigger==pTrigger ); } + return; + +trigger_orphan_error: + if( db->init.iDb==1 ){ + /* Ticket #3810. + ** Normally, whenever a table is dropped, all associated triggers are + ** dropped too. But if a TEMP trigger is created on a non-TEMP table + ** and the table is dropped by a different database connection, the + ** trigger is not visible to the database connection that does the + ** drop so the trigger cannot be dropped. This results in an + ** "orphaned trigger" - a trigger whose associated table is missing. + ** + ** 2020-11-05 see also https://sqlite.org/forum/forumpost/157dc791df + */ + db->init.orphanTrigger = 1; + } + goto trigger_cleanup; } /* @@ -128142,39 +149336,66 @@ SQLITE_PRIVATE void sqlite3FinishTrigger( } sqlite3TokenInit(&nameToken, pTrig->zName); sqlite3FixInit(&sFix, pParse, iDb, "trigger", &nameToken); - if( sqlite3FixTriggerStep(&sFix, pTrig->step_list) - || sqlite3FixExpr(&sFix, pTrig->pWhen) + if( sqlite3FixTriggerStep(&sFix, pTrig->step_list) + || sqlite3FixExpr(&sFix, pTrig->pWhen) ){ goto triggerfinish_cleanup; } +#ifndef SQLITE_OMIT_ALTERTABLE + if( IN_RENAME_OBJECT ){ + assert( !db->init.busy ); + pParse->pNewTrigger = pTrig; + pTrig = 0; + }else +#endif + /* if we are not initializing, - ** build the sqlite_master entry + ** build the sqlite_schema entry */ if( !db->init.busy ){ Vdbe *v; char *z; - /* Make an entry in the sqlite_master table */ + /* If this is a new CREATE TABLE statement, and if shadow tables + ** are read-only, and the trigger makes a change to a shadow table, + ** then raise an error - do not allow the trigger to be created. */ + if( sqlite3ReadOnlyShadowTables(db) ){ + TriggerStep *pStep; + for(pStep=pTrig->step_list; pStep; pStep=pStep->pNext){ + if( pStep->zTarget!=0 + && sqlite3ShadowTableName(db, pStep->zTarget) + ){ + sqlite3ErrorMsg(pParse, + "trigger \"%s\" may not write to shadow table \"%s\"", + pTrig->zName, pStep->zTarget); + goto triggerfinish_cleanup; + } + } + } + + /* Make an entry in the sqlite_schema table */ v = sqlite3GetVdbe(pParse); if( v==0 ) goto triggerfinish_cleanup; sqlite3BeginWriteOperation(pParse, 0, iDb); z = sqlite3DbStrNDup(db, (char*)pAll->z, pAll->n); testcase( z==0 ); sqlite3NestedParse(pParse, - "INSERT INTO %Q.%s VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')", - db->aDb[iDb].zDbSName, MASTER_NAME, zName, + "INSERT INTO %Q." LEGACY_SCHEMA_TABLE + " VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')", + db->aDb[iDb].zDbSName, zName, pTrig->table, z); sqlite3DbFree(db, z); sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddParseSchemaOp(v, iDb, - sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName)); + sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName), 0); } if( db->init.busy ){ Trigger *pLink = pTrig; Hash *pHash = &db->aDb[iDb].pSchema->trigHash; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); + assert( pLink!=0 ); pTrig = sqlite3HashInsert(pHash, zName, pTrig); if( pTrig ){ sqlite3OomFault(db); @@ -128189,7 +149410,7 @@ SQLITE_PRIVATE void sqlite3FinishTrigger( triggerfinish_cleanup: sqlite3DeleteTrigger(db, pTrig); - assert( !pParse->pNewTrigger ); + assert( IN_RENAME_OBJECT || !pParse->pNewTrigger ); sqlite3DeleteTriggerStep(db, pStepList); } @@ -128202,14 +149423,14 @@ static char *triggerSpanDup(sqlite3 *db, const char *zStart, const char *zEnd){ int i; if( z ) for(i=0; z[i]; i++) if( sqlite3Isspace(z[i]) ) z[i] = ' '; return z; -} +} /* ** Turn a SELECT statement (that the pSelect parameter points to) into ** a trigger step. Return a pointer to a TriggerStep structure. ** ** The parser calls this routine when it finds a SELECT statement in -** body of a TRIGGER. +** body of a TRIGGER. */ SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep( sqlite3 *db, /* Database connection */ @@ -128236,14 +149457,16 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep( ** If an OOM error occurs, NULL is returned and db->mallocFailed is set. */ static TriggerStep *triggerStepAllocate( - sqlite3 *db, /* Database connection */ + Parse *pParse, /* Parser context */ u8 op, /* Trigger opcode */ Token *pName, /* The target name */ const char *zStart, /* Start of SQL text */ const char *zEnd /* End of SQL text */ ){ + sqlite3 *db = pParse->db; TriggerStep *pTriggerStep; + if( pParse->nErr ) return 0; pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep) + pName->n + 1); if( pTriggerStep ){ char *z = (char*)&pTriggerStep[1]; @@ -128252,6 +149475,9 @@ static TriggerStep *triggerStepAllocate( pTriggerStep->zTarget = z; pTriggerStep->op = op; pTriggerStep->zSpan = triggerSpanDup(db, zStart, zEnd); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenMap(pParse, pTriggerStep->zTarget, pName); + } } return pTriggerStep; } @@ -128264,7 +149490,7 @@ static TriggerStep *triggerStepAllocate( ** body of a trigger. */ SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep( - sqlite3 *db, /* The database connection */ + Parse *pParse, /* Parser */ Token *pTableName, /* Name of the table into which we insert */ IdList *pColumn, /* List of columns in pTableName to insert into */ Select *pSelect, /* A SELECT statement that supplies values */ @@ -128273,16 +149499,25 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep( const char *zStart, /* Start of SQL text */ const char *zEnd /* End of SQL text */ ){ + sqlite3 *db = pParse->db; TriggerStep *pTriggerStep; assert(pSelect != 0 || db->mallocFailed); - pTriggerStep = triggerStepAllocate(db, TK_INSERT, pTableName, zStart, zEnd); + pTriggerStep = triggerStepAllocate(pParse, TK_INSERT, pTableName,zStart,zEnd); if( pTriggerStep ){ - pTriggerStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); + if( IN_RENAME_OBJECT ){ + pTriggerStep->pSelect = pSelect; + pSelect = 0; + }else{ + pTriggerStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); + } pTriggerStep->pIdList = pColumn; pTriggerStep->pUpsert = pUpsert; pTriggerStep->orconf = orconf; + if( pUpsert ){ + sqlite3HasExplicitNulls(pParse, pUpsert->pUpsertTarget); + } }else{ testcase( pColumn ); sqlite3IdListDelete(db, pColumn); @@ -128300,24 +149535,37 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep( ** sees an UPDATE statement inside the body of a CREATE TRIGGER. */ SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep( - sqlite3 *db, /* The database connection */ + Parse *pParse, /* Parser */ Token *pTableName, /* Name of the table to be updated */ + SrcList *pFrom, /* FROM clause for an UPDATE-FROM, or NULL */ ExprList *pEList, /* The SET clause: list of column and new values */ Expr *pWhere, /* The WHERE clause */ u8 orconf, /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */ const char *zStart, /* Start of SQL text */ const char *zEnd /* End of SQL text */ ){ + sqlite3 *db = pParse->db; TriggerStep *pTriggerStep; - pTriggerStep = triggerStepAllocate(db, TK_UPDATE, pTableName, zStart, zEnd); + pTriggerStep = triggerStepAllocate(pParse, TK_UPDATE, pTableName,zStart,zEnd); if( pTriggerStep ){ - pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE); - pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); + if( IN_RENAME_OBJECT ){ + pTriggerStep->pExprList = pEList; + pTriggerStep->pWhere = pWhere; + pTriggerStep->pFrom = pFrom; + pEList = 0; + pWhere = 0; + pFrom = 0; + }else{ + pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE); + pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); + pTriggerStep->pFrom = sqlite3SrcListDup(db, pFrom, EXPRDUP_REDUCE); + } pTriggerStep->orconf = orconf; } sqlite3ExprListDelete(db, pEList); sqlite3ExprDelete(db, pWhere); + sqlite3SrcListDelete(db, pFrom); return pTriggerStep; } @@ -128327,28 +149575,34 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep( ** sees a DELETE statement inside the body of a CREATE TRIGGER. */ SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep( - sqlite3 *db, /* Database connection */ + Parse *pParse, /* Parser */ Token *pTableName, /* The table from which rows are deleted */ Expr *pWhere, /* The WHERE clause */ const char *zStart, /* Start of SQL text */ const char *zEnd /* End of SQL text */ ){ + sqlite3 *db = pParse->db; TriggerStep *pTriggerStep; - pTriggerStep = triggerStepAllocate(db, TK_DELETE, pTableName, zStart, zEnd); + pTriggerStep = triggerStepAllocate(pParse, TK_DELETE, pTableName,zStart,zEnd); if( pTriggerStep ){ - pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); + if( IN_RENAME_OBJECT ){ + pTriggerStep->pWhere = pWhere; + pWhere = 0; + }else{ + pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); + } pTriggerStep->orconf = OE_Default; } sqlite3ExprDelete(db, pWhere); return pTriggerStep; } -/* +/* ** Recursively delete a Trigger structure */ SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3 *db, Trigger *pTrigger){ - if( pTrigger==0 ) return; + if( pTrigger==0 || pTrigger->bReturning ) return; sqlite3DeleteTriggerStep(db, pTrigger->step_list); sqlite3DbFree(db, pTrigger->zName); sqlite3DbFree(db, pTrigger->table); @@ -128358,7 +149612,7 @@ SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3 *db, Trigger *pTrigger){ } /* -** This function is called to drop a trigger from the database schema. +** This function is called to drop a trigger from the database schema. ** ** This may be called directly from the parser and therefore identifies ** the trigger by name. The sqlite3DropTriggerPtr() routine does the @@ -128383,14 +149637,14 @@ SQLITE_PRIVATE void sqlite3DropTrigger(Parse *pParse, SrcList *pName, int noErr) assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) ); for(i=OMIT_TEMPDB; inDb; i++){ int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - if( zDb && sqlite3StrICmp(db->aDb[j].zDbSName, zDb) ) continue; + if( zDb && sqlite3DbIsNamed(db, j, zDb)==0 ) continue; assert( sqlite3SchemaMutexHeld(db, j, 0) ); pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName); if( pTrigger ) break; } if( !pTrigger ){ if( !noErr ){ - sqlite3ErrorMsg(pParse, "no such trigger: %S", pName, 0); + sqlite3ErrorMsg(pParse, "no such trigger: %S", pName->a); }else{ sqlite3CodeVerifyNamedSchema(pParse, zDb); } @@ -128413,7 +149667,7 @@ static Table *tableOfTrigger(Trigger *pTrigger){ /* -** Drop a trigger given a pointer to that trigger. +** Drop a trigger given a pointer to that trigger. */ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){ Table *pTable; @@ -128424,10 +149678,9 @@ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){ iDb = sqlite3SchemaToIndex(pParse->db, pTrigger->pSchema); assert( iDb>=0 && iDbnDb ); pTable = tableOfTrigger(pTrigger); - assert( pTable ); - assert( pTable->pSchema==pTrigger->pSchema || iDb==1 ); + assert( (pTable && pTable->pSchema==pTrigger->pSchema) || iDb==1 ); #ifndef SQLITE_OMIT_AUTHORIZATION - { + if( pTable ){ int code = SQLITE_DROP_TRIGGER; const char *zDb = db->aDb[iDb].zDbSName; const char *zTab = SCHEMA_TABLE(iDb); @@ -128441,11 +149694,10 @@ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){ /* Generate code to destroy the database record of the trigger. */ - assert( pTable!=0 ); if( (v = sqlite3GetVdbe(pParse))!=0 ){ sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE name=%Q AND type='trigger'", - db->aDb[iDb].zDbSName, MASTER_NAME, pTrigger->zName + "DELETE FROM %Q." LEGACY_SCHEMA_TABLE " WHERE name=%Q AND type='trigger'", + db->aDb[iDb].zDbSName, pTrigger->zName ); sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddOp4(v, OP_DropTrigger, iDb, 0, 0, pTrigger->zName, 0); @@ -128465,9 +149717,15 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const ch if( ALWAYS(pTrigger) ){ if( pTrigger->pSchema==pTrigger->pTabSchema ){ Table *pTab = tableOfTrigger(pTrigger); - Trigger **pp; - for(pp=&pTab->pTrigger; *pp!=pTrigger; pp=&((*pp)->pNext)); - *pp = (*pp)->pNext; + if( pTab ){ + Trigger **pp; + for(pp=&pTab->pTrigger; *pp; pp=&((*pp)->pNext)){ + if( *pp==pTrigger ){ + *pp = (*pp)->pNext; + break; + } + } + } } sqlite3DeleteTrigger(db, pTrigger); db->mDbFlags |= DBFLAG_SchemaChange; @@ -128487,18 +149745,27 @@ static int checkColumnOverlap(IdList *pIdList, ExprList *pEList){ int e; if( pIdList==0 || NEVER(pEList==0) ) return 1; for(e=0; enExpr; e++){ - if( sqlite3IdListIndex(pIdList, pEList->a[e].zName)>=0 ) return 1; + if( sqlite3IdListIndex(pIdList, pEList->a[e].zEName)>=0 ) return 1; } - return 0; + return 0; +} + +/* +** Return true if any TEMP triggers exist +*/ +static int tempTriggersExist(sqlite3 *db){ + if( NEVER(db->aDb[1].pSchema==0) ) return 0; + if( sqliteHashFirst(&db->aDb[1].pSchema->trigHash)==0 ) return 0; + return 1; } /* ** Return a list of all triggers on table pTab if there exists at least -** one trigger that must be fired when an operation of type 'op' is +** one trigger that must be fired when an operation of type 'op' is ** performed on the table, and, if that operation is an UPDATE, if at ** least one of the columns in pChanges is being modified. */ -SQLITE_PRIVATE Trigger *sqlite3TriggersExist( +static SQLITE_NOINLINE Trigger *triggersReallyExist( Parse *pParse, /* Parse context */ Table *pTab, /* The table the contains the triggers */ int op, /* one of TK_DELETE, TK_INSERT, TK_UPDATE */ @@ -128509,20 +149776,74 @@ SQLITE_PRIVATE Trigger *sqlite3TriggersExist( Trigger *pList = 0; Trigger *p; - if( (pParse->db->flags & SQLITE_EnableTrigger)!=0 ){ - pList = sqlite3TriggerList(pParse, pTab); - } - assert( pList==0 || IsVirtual(pTab)==0 ); - for(p=pList; p; p=p->pNext){ - if( p->op==op && checkColumnOverlap(p->pColumns, pChanges) ){ - mask |= p->tr_tm; + pList = sqlite3TriggerList(pParse, pTab); + assert( pList==0 || IsVirtual(pTab)==0 + || (pList->bReturning && pList->pNext==0) ); + if( pList!=0 ){ + p = pList; + if( (pParse->db->flags & SQLITE_EnableTrigger)==0 + && pTab->pTrigger!=0 + ){ + /* The SQLITE_DBCONFIG_ENABLE_TRIGGER setting is off. That means that + ** only TEMP triggers are allowed. Truncate the pList so that it + ** includes only TEMP triggers */ + if( pList==pTab->pTrigger ){ + pList = 0; + goto exit_triggers_exist; + } + while( ALWAYS(p->pNext) && p->pNext!=pTab->pTrigger ) p = p->pNext; + p->pNext = 0; + p = pList; } + do{ + if( p->op==op && checkColumnOverlap(p->pColumns, pChanges) ){ + mask |= p->tr_tm; + }else if( p->op==TK_RETURNING ){ + /* The first time a RETURNING trigger is seen, the "op" value tells + ** us what time of trigger it should be. */ + assert( sqlite3IsToplevel(pParse) ); + p->op = op; + if( IsVirtual(pTab) ){ + if( op!=TK_INSERT ){ + sqlite3ErrorMsg(pParse, + "%s RETURNING is not available on virtual tables", + op==TK_DELETE ? "DELETE" : "UPDATE"); + } + p->tr_tm = TRIGGER_BEFORE; + }else{ + p->tr_tm = TRIGGER_AFTER; + } + mask |= p->tr_tm; + }else if( p->bReturning && p->op==TK_INSERT && op==TK_UPDATE + && sqlite3IsToplevel(pParse) ){ + /* Also fire a RETURNING trigger for an UPSERT */ + mask |= p->tr_tm; + } + p = p->pNext; + }while( p ); } +exit_triggers_exist: if( pMask ){ *pMask = mask; } return (mask ? pList : 0); } +SQLITE_PRIVATE Trigger *sqlite3TriggersExist( + Parse *pParse, /* Parse context */ + Table *pTab, /* The table the contains the triggers */ + int op, /* one of TK_DELETE, TK_INSERT, TK_UPDATE */ + ExprList *pChanges, /* Columns that change in an UPDATE statement */ + int *pMask /* OUT: Mask of TRIGGER_BEFORE|TRIGGER_AFTER */ +){ + assert( pTab!=0 ); + if( (pTab->pTrigger==0 && !tempTriggersExist(pParse->db)) + || pParse->disableTriggers + ){ + if( pMask ) *pMask = 0; + return 0; + } + return triggersReallyExist(pParse,pTab,op,pChanges,pMask); +} /* ** Convert the pStep->zTarget string into a SrcList and return a pointer @@ -128534,37 +149855,188 @@ SQLITE_PRIVATE Trigger *sqlite3TriggersExist( ** trigger is in TEMP in which case it can refer to any other database it ** wants. */ -static SrcList *targetSrcList( +SQLITE_PRIVATE SrcList *sqlite3TriggerStepSrc( Parse *pParse, /* The parsing context */ TriggerStep *pStep /* The trigger containing the target token */ ){ sqlite3 *db = pParse->db; - int iDb; /* Index of the database to use */ - SrcList *pSrc; /* SrcList to be returned */ - - pSrc = sqlite3SrcListAppend(db, 0, 0, 0); + SrcList *pSrc; /* SrcList to be returned */ + char *zName = sqlite3DbStrDup(db, pStep->zTarget); + pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0); + assert( pSrc==0 || pSrc->nSrc==1 ); + assert( zName || pSrc==0 ); if( pSrc ){ - assert( pSrc->nSrc>0 ); - pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget); - iDb = sqlite3SchemaToIndex(db, pStep->pTrig->pSchema); - if( iDb==0 || iDb>=2 ){ - const char *zDb; - assert( iDbnDb ); - zDb = db->aDb[iDb].zDbSName; - pSrc->a[pSrc->nSrc-1].zDatabase = sqlite3DbStrDup(db, zDb); + Schema *pSchema = pStep->pTrig->pSchema; + pSrc->a[0].zName = zName; + if( pSchema!=db->aDb[1].pSchema ){ + pSrc->a[0].pSchema = pSchema; } + if( pStep->pFrom ){ + SrcList *pDup = sqlite3SrcListDup(db, pStep->pFrom, 0); + if( pDup && pDup->nSrc>1 && !IN_RENAME_OBJECT ){ + Select *pSubquery; + Token as; + pSubquery = sqlite3SelectNew(pParse,0,pDup,0,0,0,0,SF_NestedFrom,0); + as.n = 0; + as.z = 0; + pDup = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&as,pSubquery,0); + } + pSrc = sqlite3SrcListAppendList(pParse, pSrc, pDup); + } + }else{ + sqlite3DbFree(db, zName); } return pSrc; } /* -** Generate VDBE code for the statements inside the body of a single +** Return true if the pExpr term from the RETURNING clause argument +** list is of the form "*". Raise an error if the terms if of the +** form "table.*". +*/ +static int isAsteriskTerm( + Parse *pParse, /* Parsing context */ + Expr *pTerm /* A term in the RETURNING clause */ +){ + assert( pTerm!=0 ); + if( pTerm->op==TK_ASTERISK ) return 1; + if( pTerm->op!=TK_DOT ) return 0; + assert( pTerm->pRight!=0 ); + assert( pTerm->pLeft!=0 ); + if( pTerm->pRight->op!=TK_ASTERISK ) return 0; + sqlite3ErrorMsg(pParse, "RETURNING may not use \"TABLE.*\" wildcards"); + return 1; +} + +/* The input list pList is the list of result set terms from a RETURNING +** clause. The table that we are returning from is pTab. +** +** This routine makes a copy of the pList, and at the same time expands +** any "*" wildcards to be the complete set of columns from pTab. +*/ +static ExprList *sqlite3ExpandReturning( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* The arguments to RETURNING */ + Table *pTab /* The table being updated */ +){ + ExprList *pNew = 0; + sqlite3 *db = pParse->db; + int i; + + for(i=0; inExpr; i++){ + Expr *pOldExpr = pList->a[i].pExpr; + if( NEVER(pOldExpr==0) ) continue; + if( isAsteriskTerm(pParse, pOldExpr) ){ + int jj; + for(jj=0; jjnCol; jj++){ + Expr *pNewExpr; + if( IsHiddenColumn(pTab->aCol+jj) ) continue; + pNewExpr = sqlite3Expr(db, TK_ID, pTab->aCol[jj].zCnName); + pNew = sqlite3ExprListAppend(pParse, pNew, pNewExpr); + if( !db->mallocFailed ){ + struct ExprList_item *pItem = &pNew->a[pNew->nExpr-1]; + pItem->zEName = sqlite3DbStrDup(db, pTab->aCol[jj].zCnName); + pItem->fg.eEName = ENAME_NAME; + } + } + }else{ + Expr *pNewExpr = sqlite3ExprDup(db, pOldExpr, 0); + pNew = sqlite3ExprListAppend(pParse, pNew, pNewExpr); + if( !db->mallocFailed && ALWAYS(pList->a[i].zEName!=0) ){ + struct ExprList_item *pItem = &pNew->a[pNew->nExpr-1]; + pItem->zEName = sqlite3DbStrDup(db, pList->a[i].zEName); + pItem->fg.eEName = pList->a[i].fg.eEName; + } + } + } + return pNew; +} + +/* +** Generate code for the RETURNING trigger. Unlike other triggers +** that invoke a subprogram in the bytecode, the code for RETURNING +** is generated in-line. +*/ +static void codeReturningTrigger( + Parse *pParse, /* Parse context */ + Trigger *pTrigger, /* The trigger step that defines the RETURNING */ + Table *pTab, /* The table to code triggers from */ + int regIn /* The first in an array of registers */ +){ + Vdbe *v = pParse->pVdbe; + sqlite3 *db = pParse->db; + ExprList *pNew; + Returning *pReturning; + Select sSelect; + SrcList sFrom; + + assert( v!=0 ); + assert( pParse->bReturning ); + assert( db->pParse==pParse ); + pReturning = pParse->u1.pReturning; + assert( pTrigger == &(pReturning->retTrig) ); + memset(&sSelect, 0, sizeof(sSelect)); + memset(&sFrom, 0, sizeof(sFrom)); + sSelect.pEList = sqlite3ExprListDup(db, pReturning->pReturnEL, 0); + sSelect.pSrc = &sFrom; + sFrom.nSrc = 1; + sFrom.a[0].pTab = pTab; + sFrom.a[0].iCursor = -1; + sqlite3SelectPrep(pParse, &sSelect, 0); + if( pParse->nErr==0 ){ + assert( db->mallocFailed==0 ); + sqlite3GenerateColumnNames(pParse, &sSelect); + } + sqlite3ExprListDelete(db, sSelect.pEList); + pNew = sqlite3ExpandReturning(pParse, pReturning->pReturnEL, pTab); + if( pParse->nErr==0 ){ + NameContext sNC; + memset(&sNC, 0, sizeof(sNC)); + if( pReturning->nRetCol==0 ){ + pReturning->nRetCol = pNew->nExpr; + pReturning->iRetCur = pParse->nTab++; + } + sNC.pParse = pParse; + sNC.uNC.iBaseReg = regIn; + sNC.ncFlags = NC_UBaseReg; + pParse->eTriggerOp = pTrigger->op; + pParse->pTriggerTab = pTab; + if( sqlite3ResolveExprListNames(&sNC, pNew)==SQLITE_OK + && ALWAYS(!db->mallocFailed) + ){ + int i; + int nCol = pNew->nExpr; + int reg = pParse->nMem+1; + pParse->nMem += nCol+2; + pReturning->iRetReg = reg; + for(i=0; ia[i].pExpr; + assert( pCol!=0 ); /* Due to !db->mallocFailed ~9 lines above */ + sqlite3ExprCodeFactorable(pParse, pCol, reg+i); + if( sqlite3ExprAffinity(pCol)==SQLITE_AFF_REAL ){ + sqlite3VdbeAddOp1(v, OP_RealAffinity, reg+i); + } + } + sqlite3VdbeAddOp3(v, OP_MakeRecord, reg, i, reg+i); + sqlite3VdbeAddOp2(v, OP_NewRowid, pReturning->iRetCur, reg+i+1); + sqlite3VdbeAddOp3(v, OP_Insert, pReturning->iRetCur, reg+i, reg+i+1); + } + } + sqlite3ExprListDelete(db, pNew); + pParse->eTriggerOp = 0; + pParse->pTriggerTab = 0; +} + + + +/* +** Generate VDBE code for the statements inside the body of a single ** trigger. */ static int codeTriggerProgram( Parse *pParse, /* The parser context */ TriggerStep *pStepList, /* List of statements inside the trigger body */ - int orconf /* Conflict algorithm. (OE_Abort, etc) */ + int orconf /* Conflict algorithm. (OE_Abort, etc) */ ){ TriggerStep *pStep; Vdbe *v = pParse->pVdbe; @@ -128600,29 +150072,32 @@ static int codeTriggerProgram( switch( pStep->op ){ case TK_UPDATE: { - sqlite3Update(pParse, - targetSrcList(pParse, pStep), - sqlite3ExprListDup(db, pStep->pExprList, 0), - sqlite3ExprDup(db, pStep->pWhere, 0), + sqlite3Update(pParse, + sqlite3TriggerStepSrc(pParse, pStep), + sqlite3ExprListDup(db, pStep->pExprList, 0), + sqlite3ExprDup(db, pStep->pWhere, 0), pParse->eOrconf, 0, 0, 0 ); + sqlite3VdbeAddOp0(v, OP_ResetCount); break; } case TK_INSERT: { - sqlite3Insert(pParse, - targetSrcList(pParse, pStep), - sqlite3SelectDup(db, pStep->pSelect, 0), - sqlite3IdListDup(db, pStep->pIdList), + sqlite3Insert(pParse, + sqlite3TriggerStepSrc(pParse, pStep), + sqlite3SelectDup(db, pStep->pSelect, 0), + sqlite3IdListDup(db, pStep->pIdList), pParse->eOrconf, sqlite3UpsertDup(db, pStep->pUpsert) ); + sqlite3VdbeAddOp0(v, OP_ResetCount); break; } case TK_DELETE: { - sqlite3DeleteFrom(pParse, - targetSrcList(pParse, pStep), + sqlite3DeleteFrom(pParse, + sqlite3TriggerStepSrc(pParse, pStep), sqlite3ExprDup(db, pStep->pWhere, 0), 0, 0 ); + sqlite3VdbeAddOp0(v, OP_ResetCount); break; } default: assert( pStep->op==TK_SELECT ); { @@ -128633,9 +150108,6 @@ static int codeTriggerProgram( sqlite3SelectDelete(db, pSelect); break; } - } - if( pStep->op!=TK_SELECT ){ - sqlite3VdbeAddOp0(v, OP_ResetCount); } } @@ -128678,7 +150150,7 @@ static void transferParseError(Parse *pTo, Parse *pFrom){ } /* -** Create and populate a new TriggerPrg object with a sub-program +** Create and populate a new TriggerPrg object with a sub-program ** implementing trigger pTrigger with ON CONFLICT policy orconf. */ static TriggerPrg *codeRowTrigger( @@ -128694,14 +150166,14 @@ static TriggerPrg *codeRowTrigger( Vdbe *v; /* Temporary VM */ NameContext sNC; /* Name context for sub-vdbe */ SubProgram *pProgram = 0; /* Sub-vdbe for trigger program */ - Parse *pSubParse; /* Parse context for sub-vdbe */ int iEndTrigger = 0; /* Label to jump to if WHEN is false */ + Parse sSubParse; /* Parse context for sub-vdbe */ assert( pTrigger->zName==0 || pTab==tableOfTrigger(pTrigger) ); assert( pTop->pVdbe ); /* Allocate the TriggerPrg and SubProgram objects. To ensure that they - ** are freed if an error occurs, link them into the Parse.pTriggerPrg + ** are freed if an error occurs, link them into the Parse.pTriggerPrg ** list of the top-level Parse object sooner rather than later. */ pPrg = sqlite3DbMallocZero(db, sizeof(TriggerPrg)); if( !pPrg ) return 0; @@ -128715,22 +150187,21 @@ static TriggerPrg *codeRowTrigger( pPrg->aColmask[0] = 0xffffffff; pPrg->aColmask[1] = 0xffffffff; - /* Allocate and populate a new Parse context to use for coding the + /* Allocate and populate a new Parse context to use for coding the ** trigger sub-program. */ - pSubParse = sqlite3StackAllocZero(db, sizeof(Parse)); - if( !pSubParse ) return 0; + sqlite3ParseObjectInit(&sSubParse, db); memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pSubParse; - pSubParse->db = db; - pSubParse->pTriggerTab = pTab; - pSubParse->pToplevel = pTop; - pSubParse->zAuthContext = pTrigger->zName; - pSubParse->eTriggerOp = pTrigger->op; - pSubParse->nQueryLoop = pParse->nQueryLoop; + sNC.pParse = &sSubParse; + sSubParse.pTriggerTab = pTab; + sSubParse.pToplevel = pTop; + sSubParse.zAuthContext = pTrigger->zName; + sSubParse.eTriggerOp = pTrigger->op; + sSubParse.nQueryLoop = pParse->nQueryLoop; + sSubParse.prepFlags = pParse->prepFlags; - v = sqlite3GetVdbe(pSubParse); + v = sqlite3GetVdbe(&sSubParse); if( v ){ - VdbeComment((v, "Start: %s.%s (%s %s%s%s ON %s)", + VdbeComment((v, "Start: %s.%s (%s %s%s%s ON %s)", pTrigger->zName, onErrorText(orconf), (pTrigger->tr_tm==TRIGGER_BEFORE ? "BEFORE" : "AFTER"), (pTrigger->op==TK_UPDATE ? "UPDATE" : ""), @@ -128740,28 +150211,28 @@ static TriggerPrg *codeRowTrigger( )); #ifndef SQLITE_OMIT_TRACE if( pTrigger->zName ){ - sqlite3VdbeChangeP4(v, -1, + sqlite3VdbeChangeP4(v, -1, sqlite3MPrintf(db, "-- TRIGGER %s", pTrigger->zName), P4_DYNAMIC ); } #endif /* If one was specified, code the WHEN clause. If it evaluates to false - ** (or NULL) the sub-vdbe is immediately halted by jumping to the + ** (or NULL) the sub-vdbe is immediately halted by jumping to the ** OP_Halt inserted at the end of the program. */ if( pTrigger->pWhen ){ pWhen = sqlite3ExprDup(db, pTrigger->pWhen, 0); - if( SQLITE_OK==sqlite3ResolveExprNames(&sNC, pWhen) - && db->mallocFailed==0 + if( db->mallocFailed==0 + && SQLITE_OK==sqlite3ResolveExprNames(&sNC, pWhen) ){ - iEndTrigger = sqlite3VdbeMakeLabel(v); - sqlite3ExprIfFalse(pSubParse, pWhen, iEndTrigger, SQLITE_JUMPIFNULL); + iEndTrigger = sqlite3VdbeMakeLabel(&sSubParse); + sqlite3ExprIfFalse(&sSubParse, pWhen, iEndTrigger, SQLITE_JUMPIFNULL); } sqlite3ExprDelete(db, pWhen); } /* Code the trigger program into the sub-vdbe. */ - codeTriggerProgram(pSubParse, pTrigger->step_list, orconf); + codeTriggerProgram(&sSubParse, pTrigger->step_list, orconf); /* Insert an OP_Halt at the end of the sub-program. */ if( iEndTrigger ){ @@ -128769,27 +150240,27 @@ static TriggerPrg *codeRowTrigger( } sqlite3VdbeAddOp0(v, OP_Halt); VdbeComment((v, "End: %s.%s", pTrigger->zName, onErrorText(orconf))); + transferParseError(pParse, &sSubParse); - transferParseError(pParse, pSubParse); - if( db->mallocFailed==0 && pParse->nErr==0 ){ + if( pParse->nErr==0 ){ + assert( db->mallocFailed==0 ); pProgram->aOp = sqlite3VdbeTakeOpArray(v, &pProgram->nOp, &pTop->nMaxArg); } - pProgram->nMem = pSubParse->nMem; - pProgram->nCsr = pSubParse->nTab; + pProgram->nMem = sSubParse.nMem; + pProgram->nCsr = sSubParse.nTab; pProgram->token = (void *)pTrigger; - pPrg->aColmask[0] = pSubParse->oldmask; - pPrg->aColmask[1] = pSubParse->newmask; + pPrg->aColmask[0] = sSubParse.oldmask; + pPrg->aColmask[1] = sSubParse.newmask; sqlite3VdbeDelete(v); + }else{ + transferParseError(pParse, &sSubParse); } - assert( !pSubParse->pAinc && !pSubParse->pZombieTab ); - assert( !pSubParse->pTriggerPrg && !pSubParse->nMaxArg ); - sqlite3ParserReset(pSubParse); - sqlite3StackFree(db, pSubParse); - + assert( !sSubParse.pTriggerPrg && !sSubParse.nMaxArg ); + sqlite3ParseObjectReset(&sSubParse); return pPrg; } - + /* ** Return a pointer to a TriggerPrg object containing the sub-program for ** trigger pTrigger with default ON CONFLICT algorithm orconf. If no such @@ -128811,21 +150282,22 @@ static TriggerPrg *getRowTrigger( ** process of being coded). If this is the case, then an entry with ** a matching TriggerPrg.pTrigger field will be present somewhere ** in the Parse.pTriggerPrg list. Search for such an entry. */ - for(pPrg=pRoot->pTriggerPrg; - pPrg && (pPrg->pTrigger!=pTrigger || pPrg->orconf!=orconf); + for(pPrg=pRoot->pTriggerPrg; + pPrg && (pPrg->pTrigger!=pTrigger || pPrg->orconf!=orconf); pPrg=pPrg->pNext ); /* If an existing TriggerPrg could not be located, create a new one. */ if( !pPrg ){ pPrg = codeRowTrigger(pParse, pTrigger, pTab, orconf); + pParse->db->errByteOffset = -1; } return pPrg; } /* -** Generate code for the trigger program associated with trigger p on +** Generate code for the trigger program associated with trigger p on ** table pTab. The reg, orconf and ignoreJump parameters passed to this ** function are the same as those described in the header function for ** sqlite3CodeRowTrigger() @@ -128841,9 +150313,9 @@ SQLITE_PRIVATE void sqlite3CodeRowTriggerDirect( Vdbe *v = sqlite3GetVdbe(pParse); /* Main VM */ TriggerPrg *pPrg; pPrg = getRowTrigger(pParse, p, pTab, orconf); - assert( pPrg || pParse->nErr || pParse->db->mallocFailed ); + assert( pPrg || pParse->nErr ); - /* Code the OP_Program opcode in the parent VDBE. P4 of the OP_Program + /* Code the OP_Program opcode in the parent VDBE. P4 of the OP_Program ** is a pointer to the sub-vdbe containing the trigger program. */ if( pPrg ){ int bRecursive = (p->zName && 0==(pParse->db->flags&SQLITE_RecTriggers)); @@ -128872,7 +150344,7 @@ SQLITE_PRIVATE void sqlite3CodeRowTriggerDirect( ** If there are no triggers that fire at the specified time for the specified ** operation on pTab, this function is a no-op. ** -** The reg argument is the address of the first in an array of registers +** The reg argument is the address of the first in an array of registers ** that contain the values substituted for the new.* and old.* references ** in the trigger program. If N is the number of columns in table pTab ** (a copy of pTab->nCol), then registers are populated as follows: @@ -128884,17 +150356,17 @@ SQLITE_PRIVATE void sqlite3CodeRowTriggerDirect( ** ... ... ** reg+N OLD.* value of right-most column of pTab ** reg+N+1 NEW.rowid -** reg+N+2 OLD.* value of left-most column of pTab +** reg+N+2 NEW.* value of left-most column of pTab ** ... ... ** reg+N+N+1 NEW.* value of right-most column of pTab ** ** For ON DELETE triggers, the registers containing the NEW.* values will -** never be accessed by the trigger program, so they are not allocated or -** populated by the caller (there is no data to populate them with anyway). +** never be accessed by the trigger program, so they are not allocated or +** populated by the caller (there is no data to populate them with anyway). ** Similarly, for ON INSERT triggers the values stored in the OLD.* registers ** are never accessed, and so are not allocated by the caller. So, for an ** ON INSERT trigger, the value passed to this function as parameter reg -** is not a readable register, although registers (reg+N) through +** is not a readable register, although registers (reg+N) through ** (reg+N+N+1) are. ** ** Parameter orconf is the default conflict resolution algorithm for the @@ -128926,23 +150398,31 @@ SQLITE_PRIVATE void sqlite3CodeRowTrigger( ** or else it must be a TEMP trigger. */ assert( p->pSchema!=0 ); assert( p->pTabSchema!=0 ); - assert( p->pSchema==p->pTabSchema + assert( p->pSchema==p->pTabSchema || p->pSchema==pParse->db->aDb[1].pSchema ); - /* Determine whether we should code this trigger */ - if( p->op==op - && p->tr_tm==tr_tm + /* Determine whether we should code this trigger. One of two choices: + ** 1. The trigger is an exact match to the current DML statement + ** 2. This is a RETURNING trigger for INSERT but we are currently + ** doing the UPDATE part of an UPSERT. + */ + if( (p->op==op || (p->bReturning && p->op==TK_INSERT && op==TK_UPDATE)) + && p->tr_tm==tr_tm && checkColumnOverlap(p->pColumns, pChanges) ){ - sqlite3CodeRowTriggerDirect(pParse, p, pTab, reg, orconf, ignoreJump); + if( !p->bReturning ){ + sqlite3CodeRowTriggerDirect(pParse, p, pTab, reg, orconf, ignoreJump); + }else if( sqlite3IsToplevel(pParse) ){ + codeReturningTrigger(pParse, p, pTab, reg); + } } } } /* -** Triggers may access values stored in the old.* or new.* pseudo-table. -** This function returns a 32-bit bitmask indicating which columns of the -** old.* or new.* tables actually are used by triggers. This information +** Triggers may access values stored in the old.* or new.* pseudo-table. +** This function returns a 32-bit bitmask indicating which columns of the +** old.* or new.* tables actually are used by triggers. This information ** may be used by the caller, for example, to avoid having to load the entire ** old.* record into memory when executing an UPDATE or DELETE command. ** @@ -128952,7 +150432,7 @@ SQLITE_PRIVATE void sqlite3CodeRowTrigger( ** are more than 32 columns in the table, and at least one of the columns ** with an index greater than 32 may be accessed, 0xffffffff is returned. ** -** It is not possible to determine if the old.rowid or new.rowid column is +** It is not possible to determine if the old.rowid or new.rowid column is ** accessed by triggers. The caller must always assume that it is. ** ** Parameter isNew must be either 1 or 0. If it is 0, then the mask returned @@ -128978,14 +150458,22 @@ SQLITE_PRIVATE u32 sqlite3TriggerColmask( Trigger *p; assert( isNew==1 || isNew==0 ); + if( IsView(pTab) ){ + return 0xffffffff; + } for(p=pTrigger; p; p=p->pNext){ - if( p->op==op && (tr_tm&p->tr_tm) + if( p->op==op + && (tr_tm&p->tr_tm) && checkColumnOverlap(p->pColumns,pChanges) ){ - TriggerPrg *pPrg; - pPrg = getRowTrigger(pParse, p, pTab, orconf); - if( pPrg ){ - mask |= pPrg->aColmask[isNew]; + if( p->bReturning ){ + mask = 0xffffffff; + }else{ + TriggerPrg *pPrg; + pPrg = getRowTrigger(pParse, p, pTab, orconf); + if( pPrg ){ + mask |= pPrg->aColmask[isNew]; + } } } } @@ -129029,10 +150517,10 @@ static void updateVirtualTable( /* ** The most recently coded instruction was an OP_Column to retrieve the -** i-th column of table pTab. This routine sets the P4 parameter of the +** i-th column of table pTab. This routine sets the P4 parameter of the ** OP_Column to the default value, if any. ** -** The default value of a column is specified by a DEFAULT clause in the +** The default value of a column is specified by a DEFAULT clause in the ** column definition. This was either supplied by the user when the table ** was created, or added later to the table definition by an ALTER TABLE ** command. If the latter, then the row-records in the table btree on disk @@ -129041,49 +150529,245 @@ static void updateVirtualTable( ** If the former, then all row-records are guaranteed to include a value ** for the column and the P4 value is not required. ** -** Column definitions created by an ALTER TABLE command may only have +** Column definitions created by an ALTER TABLE command may only have ** literal default values specified: a number, null or a string. (If a more -** complicated default expression value was provided, it is evaluated +** complicated default expression value was provided, it is evaluated ** when the ALTER TABLE is executed and one of the literal values written -** into the sqlite_master table.) +** into the sqlite_schema table.) ** ** Therefore, the P4 parameter is only required if the default value for ** the column is a literal number, string or null. The sqlite3ValueFromExpr() ** function is capable of transforming these types of expressions into ** sqlite3_value objects. ** -** If parameter iReg is not negative, code an OP_RealAffinity instruction -** on register iReg. This is used when an equivalent integer value is -** stored in place of an 8-byte floating point value in order to save -** space. +** If column as REAL affinity and the table is an ordinary b-tree table +** (not a virtual table) then the value might have been stored as an +** integer. In that case, add an OP_RealAffinity opcode to make sure +** it has been converted into REAL. */ SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *v, Table *pTab, int i, int iReg){ + Column *pCol; assert( pTab!=0 ); - if( !pTab->pSelect ){ + assert( pTab->nCol>i ); + pCol = &pTab->aCol[i]; + if( pCol->iDflt ){ sqlite3_value *pValue = 0; u8 enc = ENC(sqlite3VdbeDb(v)); - Column *pCol = &pTab->aCol[i]; - VdbeComment((v, "%s.%s", pTab->zName, pCol->zName)); + assert( !IsView(pTab) ); + VdbeComment((v, "%s.%s", pTab->zName, pCol->zCnName)); assert( inCol ); - sqlite3ValueFromExpr(sqlite3VdbeDb(v), pCol->pDflt, enc, + sqlite3ValueFromExpr(sqlite3VdbeDb(v), + sqlite3ColumnExpr(pTab,pCol), enc, pCol->affinity, &pValue); if( pValue ){ sqlite3VdbeAppendP4(v, pValue, P4_MEM); } } #ifndef SQLITE_OMIT_FLOATING_POINT - if( pTab->aCol[i].affinity==SQLITE_AFF_REAL ){ + if( pCol->affinity==SQLITE_AFF_REAL && !IsVirtual(pTab) ){ sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg); } #endif } +/* +** Check to see if column iCol of index pIdx references any of the +** columns defined by aXRef and chngRowid. Return true if it does +** and false if not. This is an optimization. False-positives are a +** performance degradation, but false-negatives can result in a corrupt +** index and incorrect answers. +** +** aXRef[j] will be non-negative if column j of the original table is +** being updated. chngRowid will be true if the rowid of the table is +** being updated. +*/ +static int indexColumnIsBeingUpdated( + Index *pIdx, /* The index to check */ + int iCol, /* Which column of the index to check */ + int *aXRef, /* aXRef[j]>=0 if column j is being updated */ + int chngRowid /* true if the rowid is being updated */ +){ + i16 iIdxCol = pIdx->aiColumn[iCol]; + assert( iIdxCol!=XN_ROWID ); /* Cannot index rowid */ + if( iIdxCol>=0 ){ + return aXRef[iIdxCol]>=0; + } + assert( iIdxCol==XN_EXPR ); + assert( pIdx->aColExpr!=0 ); + assert( pIdx->aColExpr->a[iCol].pExpr!=0 ); + return sqlite3ExprReferencesUpdatedColumn(pIdx->aColExpr->a[iCol].pExpr, + aXRef,chngRowid); +} + +/* +** Check to see if index pIdx is a partial index whose conditional +** expression might change values due to an UPDATE. Return true if +** the index is subject to change and false if the index is guaranteed +** to be unchanged. This is an optimization. False-positives are a +** performance degradation, but false-negatives can result in a corrupt +** index and incorrect answers. +** +** aXRef[j] will be non-negative if column j of the original table is +** being updated. chngRowid will be true if the rowid of the table is +** being updated. +*/ +static int indexWhereClauseMightChange( + Index *pIdx, /* The index to check */ + int *aXRef, /* aXRef[j]>=0 if column j is being updated */ + int chngRowid /* true if the rowid is being updated */ +){ + if( pIdx->pPartIdxWhere==0 ) return 0; + return sqlite3ExprReferencesUpdatedColumn(pIdx->pPartIdxWhere, + aXRef, chngRowid); +} + +/* +** Allocate and return a pointer to an expression of type TK_ROW with +** Expr.iColumn set to value (iCol+1). The resolver will modify the +** expression to be a TK_COLUMN reading column iCol of the first +** table in the source-list (pSrc->a[0]). +*/ +static Expr *exprRowColumn(Parse *pParse, int iCol){ + Expr *pRet = sqlite3PExpr(pParse, TK_ROW, 0, 0); + if( pRet ) pRet->iColumn = iCol+1; + return pRet; +} + +/* +** Assuming both the pLimit and pOrderBy parameters are NULL, this function +** generates VM code to run the query: +** +** SELECT , pChanges FROM pTabList WHERE pWhere +** +** and write the results to the ephemeral table already opened as cursor +** iEph. None of pChanges, pTabList or pWhere are modified or consumed by +** this function, they must be deleted by the caller. +** +** Or, if pLimit and pOrderBy are not NULL, and pTab is not a view: +** +** SELECT , pChanges FROM pTabList +** WHERE pWhere +** GROUP BY +** ORDER BY pOrderBy LIMIT pLimit +** +** If pTab is a view, the GROUP BY clause is omitted. +** +** Exactly how results are written to table iEph, and exactly what +** the in the query above are is determined by the type +** of table pTabList->a[0].pTab. +** +** If the table is a WITHOUT ROWID table, then argument pPk must be its +** PRIMARY KEY. In this case are the primary key columns +** of the table, in order. The results of the query are written to ephemeral +** table iEph as index keys, using OP_IdxInsert. +** +** If the table is actually a view, then are all columns of +** the view. The results are written to the ephemeral table iEph as records +** with automatically assigned integer keys. +** +** If the table is a virtual or ordinary intkey table, then +** is its rowid. For a virtual table, the results are written to iEph as +** records with automatically assigned integer keys For intkey tables, the +** rowid value in is used as the integer key, and the +** remaining fields make up the table record. +*/ +static void updateFromSelect( + Parse *pParse, /* Parse context */ + int iEph, /* Cursor for open eph. table */ + Index *pPk, /* PK if table 0 is WITHOUT ROWID */ + ExprList *pChanges, /* List of expressions to return */ + SrcList *pTabList, /* List of tables to select from */ + Expr *pWhere, /* WHERE clause for query */ + ExprList *pOrderBy, /* ORDER BY clause */ + Expr *pLimit /* LIMIT clause */ +){ + int i; + SelectDest dest; + Select *pSelect = 0; + ExprList *pList = 0; + ExprList *pGrp = 0; + Expr *pLimit2 = 0; + ExprList *pOrderBy2 = 0; + sqlite3 *db = pParse->db; + Table *pTab = pTabList->a[0].pTab; + SrcList *pSrc; + Expr *pWhere2; + int eDest; + +#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT + if( pOrderBy && pLimit==0 ) { + sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on UPDATE"); + return; + } + pOrderBy2 = sqlite3ExprListDup(db, pOrderBy, 0); + pLimit2 = sqlite3ExprDup(db, pLimit, 0); +#else + UNUSED_PARAMETER(pOrderBy); + UNUSED_PARAMETER(pLimit); +#endif + + pSrc = sqlite3SrcListDup(db, pTabList, 0); + pWhere2 = sqlite3ExprDup(db, pWhere, 0); + + assert( pTabList->nSrc>1 ); + if( pSrc ){ + assert( pSrc->a[0].fg.notCte ); + pSrc->a[0].iCursor = -1; + pSrc->a[0].pTab->nTabRef--; + pSrc->a[0].pTab = 0; + } + if( pPk ){ + for(i=0; inKeyCol; i++){ + Expr *pNew = exprRowColumn(pParse, pPk->aiColumn[i]); +#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT + if( pLimit ){ + pGrp = sqlite3ExprListAppend(pParse, pGrp, sqlite3ExprDup(db, pNew, 0)); + } +#endif + pList = sqlite3ExprListAppend(pParse, pList, pNew); + } + eDest = IsVirtual(pTab) ? SRT_Table : SRT_Upfrom; + }else if( IsView(pTab) ){ + for(i=0; inCol; i++){ + pList = sqlite3ExprListAppend(pParse, pList, exprRowColumn(pParse, i)); + } + eDest = SRT_Table; + }else{ + eDest = IsVirtual(pTab) ? SRT_Table : SRT_Upfrom; + pList = sqlite3ExprListAppend(pParse, 0, sqlite3PExpr(pParse,TK_ROW,0,0)); +#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT + if( pLimit ){ + pGrp = sqlite3ExprListAppend(pParse, 0, sqlite3PExpr(pParse,TK_ROW,0,0)); + } +#endif + } + assert( pChanges!=0 || pParse->db->mallocFailed ); + if( pChanges ){ + for(i=0; inExpr; i++){ + pList = sqlite3ExprListAppend(pParse, pList, + sqlite3ExprDup(db, pChanges->a[i].pExpr, 0) + ); + } + } + pSelect = sqlite3SelectNew(pParse, pList, + pSrc, pWhere2, pGrp, 0, pOrderBy2, + SF_UFSrcCheck|SF_IncludeHidden|SF_UpdateFrom, pLimit2 + ); + if( pSelect ) pSelect->selFlags |= SF_OrderByReqd; + sqlite3SelectDestInit(&dest, eDest, iEph); + dest.iSDParm2 = (pPk ? pPk->nKeyCol : -1); + sqlite3Select(pParse, pSelect, &dest); + sqlite3SelectDelete(db, pSelect); +} + /* ** Process an UPDATE statement. ** -** UPDATE OR IGNORE table_wxyz SET a=b, c=d WHERE e<5 AND f NOT NULL; -** \_______/ \________/ \______/ \________________/ -* onError pTabList pChanges pWhere +** UPDATE OR IGNORE tbl SET a=b, c=d FROM tbl2... WHERE e<5 AND f NOT NULL; +** \_______/ \_/ \______/ \_____/ \________________/ +** onError | pChanges | pWhere +** \_______________________/ +** pTabList */ SQLITE_PRIVATE void sqlite3Update( Parse *pParse, /* The parser context */ @@ -129095,19 +150779,20 @@ SQLITE_PRIVATE void sqlite3Update( Expr *pLimit, /* LIMIT clause. May be null */ Upsert *pUpsert /* ON CONFLICT clause, or null */ ){ - int i, j; /* Loop counters */ + int i, j, k; /* Loop counters */ Table *pTab; /* The table to be updated */ int addrTop = 0; /* VDBE instruction address of the start of the loop */ - WhereInfo *pWInfo; /* Information about the WHERE clause */ + WhereInfo *pWInfo = 0; /* Information about the WHERE clause */ Vdbe *v; /* The virtual database engine */ Index *pIdx; /* For looping over indices */ Index *pPk; /* The PRIMARY KEY index for WITHOUT ROWID tables */ int nIdx; /* Number of indices that need updating */ + int nAllIdx; /* Total number of indexes */ int iBaseCur; /* Base cursor number */ int iDataCur; /* Cursor for the canonical data btree */ int iIdxCur; /* Cursor for the first index */ sqlite3 *db; /* The database structure */ - int *aRegIdx = 0; /* First register in array assigned to each index */ + int *aRegIdx = 0; /* Registers for to each index and the main table */ int *aXRef = 0; /* aXRef[i] is the index in pChanges->a[] of the ** an expression for the i-th column of the table. ** aXRef[i]==-1 if the i-th column is not changed. */ @@ -129116,6 +150801,7 @@ SQLITE_PRIVATE void sqlite3Update( u8 chngRowid; /* Rowid changed in a normal table */ u8 chngKey; /* Either chngPk or chngRowid */ Expr *pRowidExpr = 0; /* Expression defining the new record number */ + int iRowidExpr = -1; /* Index of "rowid=" (or IPK) assignment in pChanges */ AuthContext sContext; /* The authorization context */ NameContext sNC; /* The name-context to resolve expressions in */ int iDb; /* Database containing the table being updated */ @@ -129138,6 +150824,8 @@ SQLITE_PRIVATE void sqlite3Update( int iPk = 0; /* First of nPk cells holding PRIMARY KEY value */ i16 nPk = 0; /* Number of components of the PRIMARY KEY */ int bReplace = 0; /* True if REPLACE conflict resolution might happen */ + int bFinishSeek = 1; /* The OP_FinishSeek opcode is needed */ + int nChangeFrom = 0; /* If there is a FROM, pChanges->nExpr, else 0 */ /* Register Allocations */ int regRowCount = 0; /* A count of rows changed */ @@ -129150,12 +150838,13 @@ SQLITE_PRIVATE void sqlite3Update( memset(&sContext, 0, sizeof(sContext)); db = pParse->db; - if( pParse->nErr || db->mallocFailed ){ + assert( db->pParse==pParse ); + if( pParse->nErr ){ goto update_cleanup; } - assert( pTabList->nSrc==1 ); + assert( db->mallocFailed==0 ); - /* Locate the table which we want to update. + /* Locate the table which we want to update. */ pTab = sqlite3SrcListLookup(pParse, pTabList); if( pTab==0 ) goto update_cleanup; @@ -129166,7 +150855,7 @@ SQLITE_PRIVATE void sqlite3Update( */ #ifndef SQLITE_OMIT_TRIGGER pTrigger = sqlite3TriggersExist(pParse, pTab, TK_UPDATE, pChanges, &tmask); - isView = pTab->pSelect!=0; + isView = IsView(pTab); assert( pTrigger || tmask==0 ); #else # define pTrigger 0 @@ -129178,8 +150867,23 @@ SQLITE_PRIVATE void sqlite3Update( # define isView 0 #endif +#if TREETRACE_ENABLED + if( sqlite3TreeTrace & 0x10000 ){ + sqlite3TreeViewLine(0, "In sqlite3Update() at %s:%d", __FILE__, __LINE__); + sqlite3TreeViewUpdate(pParse->pWith, pTabList, pChanges, pWhere, + onError, pOrderBy, pLimit, pUpsert, pTrigger); + } +#endif + + /* If there was a FROM clause, set nChangeFrom to the number of expressions + ** in the change-list. Otherwise, set it to 0. There cannot be a FROM + ** clause if this function is being called to generate code for part of + ** an UPSERT statement. */ + nChangeFrom = (pTabList->nSrc>1) ? pChanges->nExpr : 0; + assert( nChangeFrom==0 || pUpsert==0 ); + #ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT - if( !isView ){ + if( !isView && nChangeFrom==0 ){ pWhere = sqlite3LimitWhere( pParse, pTabList, pWhere, pOrderBy, pLimit, "UPDATE" ); @@ -129191,7 +150895,7 @@ SQLITE_PRIVATE void sqlite3Update( if( sqlite3ViewGetColumnNames(pParse, pTab) ){ goto update_cleanup; } - if( sqlite3IsReadOnly(pParse, pTab, tmask) ){ + if( sqlite3IsReadOnly(pParse, pTab, pTrigger) ){ goto update_cleanup; } @@ -129218,13 +150922,13 @@ SQLITE_PRIVATE void sqlite3Update( } pTabList->a[0].iCursor = iDataCur; - /* Allocate space for aXRef[], aRegIdx[], and aToOpen[]. + /* Allocate space for aXRef[], aRegIdx[], and aToOpen[]. ** Initialize aXRef[] and aToOpen[] to their default values. */ - aXRef = sqlite3DbMallocRawNN(db, sizeof(int) * (pTab->nCol+nIdx) + nIdx+2 ); + aXRef = sqlite3DbMallocRawNN(db, sizeof(int) * (pTab->nCol+nIdx+1) + nIdx+2 ); if( aXRef==0 ) goto update_cleanup; aRegIdx = aXRef+pTab->nCol; - aToOpen = (u8*)(aRegIdx+nIdx); + aToOpen = (u8*)(aRegIdx+nIdx+1); memset(aToOpen, 1, nIdx+1); aToOpen[nIdx+1] = 0; for(i=0; inCol; i++) aXRef[i] = -1; @@ -129236,6 +150940,10 @@ SQLITE_PRIVATE void sqlite3Update( sNC.uNC.pUpsert = pUpsert; sNC.ncFlags = NC_UUpsert; + /* Begin generating code. */ + v = sqlite3GetVdbe(pParse); + if( v==0 ) goto update_cleanup; + /* Resolve the column names in all the expressions of the ** of the UPDATE statement. Also find the column index ** for each column to be updated in the pChanges array. For each @@ -129244,28 +150952,45 @@ SQLITE_PRIVATE void sqlite3Update( */ chngRowid = chngPk = 0; for(i=0; inExpr; i++){ - if( sqlite3ResolveExprNames(&sNC, pChanges->a[i].pExpr) ){ + u8 hCol = sqlite3StrIHash(pChanges->a[i].zEName); + /* If this is an UPDATE with a FROM clause, do not resolve expressions + ** here. The call to sqlite3Select() below will do that. */ + if( nChangeFrom==0 && sqlite3ResolveExprNames(&sNC, pChanges->a[i].pExpr) ){ goto update_cleanup; } for(j=0; jnCol; j++){ - if( sqlite3StrICmp(pTab->aCol[j].zName, pChanges->a[i].zName)==0 ){ + if( pTab->aCol[j].hName==hCol + && sqlite3StrICmp(pTab->aCol[j].zCnName, pChanges->a[i].zEName)==0 + ){ if( j==pTab->iPKey ){ chngRowid = 1; pRowidExpr = pChanges->a[i].pExpr; + iRowidExpr = i; }else if( pPk && (pTab->aCol[j].colFlags & COLFLAG_PRIMKEY)!=0 ){ chngPk = 1; } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + else if( pTab->aCol[j].colFlags & COLFLAG_GENERATED ){ + testcase( pTab->aCol[j].colFlags & COLFLAG_VIRTUAL ); + testcase( pTab->aCol[j].colFlags & COLFLAG_STORED ); + sqlite3ErrorMsg(pParse, + "cannot UPDATE generated column \"%s\"", + pTab->aCol[j].zCnName); + goto update_cleanup; + } +#endif aXRef[j] = i; break; } } if( j>=pTab->nCol ){ - if( pPk==0 && sqlite3IsRowid(pChanges->a[i].zName) ){ + if( pPk==0 && sqlite3IsRowid(pChanges->a[i].zEName) ){ j = -1; chngRowid = 1; pRowidExpr = pChanges->a[i].pExpr; + iRowidExpr = i; }else{ - sqlite3ErrorMsg(pParse, "no such column: %s", pChanges->a[i].zName); + sqlite3ErrorMsg(pParse, "no such column: %s", pChanges->a[i].zEName); pParse->checkSchema = 1; goto update_cleanup; } @@ -129274,7 +150999,7 @@ SQLITE_PRIVATE void sqlite3Update( { int rc; rc = sqlite3AuthCheck(pParse, SQLITE_UPDATE, pTab->zName, - j<0 ? "ROWID" : pTab->aCol[j].zName, + j<0 ? "ROWID" : pTab->aCol[j].zCnName, db->aDb[iDb].zDbSName); if( rc==SQLITE_DENY ){ goto update_cleanup; @@ -129289,7 +151014,36 @@ SQLITE_PRIVATE void sqlite3Update( assert( chngPk==0 || chngPk==1 ); chngKey = chngRowid + chngPk; - /* The SET expressions are not actually used inside the WHERE loop. +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + /* Mark generated columns as changing if their generator expressions + ** reference any changing column. The actual aXRef[] value for + ** generated expressions is not used, other than to check to see that it + ** is non-negative, so the value of aXRef[] for generated columns can be + ** set to any non-negative number. We use 99999 so that the value is + ** obvious when looking at aXRef[] in a symbolic debugger. + */ + if( pTab->tabFlags & TF_HasGenerated ){ + int bProgress; + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + do{ + bProgress = 0; + for(i=0; inCol; i++){ + if( aXRef[i]>=0 ) continue; + if( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)==0 ) continue; + if( sqlite3ExprReferencesUpdatedColumn( + sqlite3ColumnExpr(pTab, &pTab->aCol[i]), + aXRef, chngRowid) + ){ + aXRef[i] = 99999; + bProgress = 1; + } + } + }while( bProgress ); + } +#endif + + /* The SET expressions are not actually used inside the WHERE loop. ** So reset the colUsed mask. Unless this is a virtual table. In that ** case, set all bits of the colUsed mask (to ensure that the virtual ** table implementation makes all columns available). @@ -129301,48 +151055,50 @@ SQLITE_PRIVATE void sqlite3Update( /* There is one entry in the aRegIdx[] array for each index on the table ** being updated. Fill in aRegIdx[] with a register number that will hold ** the key for accessing each index. - ** - ** FIXME: Be smarter about omitting indexes that use expressions. */ - for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ + if( onError==OE_Replace ) bReplace = 1; + for(nAllIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nAllIdx++){ int reg; - if( chngKey || hasFK>1 || pIdx->pPartIdxWhere || pIdx==pPk ){ + if( chngKey || hasFK>1 || pIdx==pPk + || indexWhereClauseMightChange(pIdx,aXRef,chngRowid) + ){ reg = ++pParse->nMem; pParse->nMem += pIdx->nColumn; }else{ reg = 0; for(i=0; inKeyCol; i++){ - i16 iIdxCol = pIdx->aiColumn[i]; - if( iIdxCol<0 || aXRef[iIdxCol]>=0 ){ + if( indexColumnIsBeingUpdated(pIdx, i, aXRef, chngRowid) ){ reg = ++pParse->nMem; pParse->nMem += pIdx->nColumn; - if( (onError==OE_Replace) - || (onError==OE_Default && pIdx->onError==OE_Replace) - ){ + if( onError==OE_Default && pIdx->onError==OE_Replace ){ bReplace = 1; } break; } } } - if( reg==0 ) aToOpen[j+1] = 0; - aRegIdx[j] = reg; + if( reg==0 ) aToOpen[nAllIdx+1] = 0; + aRegIdx[nAllIdx] = reg; } + aRegIdx[nAllIdx] = ++pParse->nMem; /* Register storing the table record */ if( bReplace ){ - /* If REPLACE conflict resolution might be invoked, open cursors on all + /* If REPLACE conflict resolution might be invoked, open cursors on all ** indexes in case they are needed to delete records. */ memset(aToOpen, 1, nIdx+1); } - /* Begin generating code. */ - v = sqlite3GetVdbe(pParse); - if( v==0 ) goto update_cleanup; if( pParse->nested==0 ) sqlite3VdbeCountChanges(v); sqlite3BeginWriteOperation(pParse, pTrigger || hasFK, iDb); /* Allocate required registers. */ if( !IsVirtual(pTab) ){ - regRowSet = ++pParse->nMem; + /* For now, regRowSet and aRegIdx[nAllIdx] share the same register. + ** If regRowSet turns out to be needed, then aRegIdx[nAllIdx] will be + ** reallocated. aRegIdx[nAllIdx] is the register in which the main + ** table record is written. regRowSet holds the RowSet for the + ** two-pass update algorithm. */ + assert( aRegIdx[nAllIdx]==pParse->nMem ); + regRowSet = aRegIdx[nAllIdx]; regOldRowid = regNewRowid = ++pParse->nMem; if( chngPk || pTrigger || hasFK ){ regOld = pParse->nMem + 1; @@ -129364,8 +151120,8 @@ SQLITE_PRIVATE void sqlite3Update( ** an ephemeral table. */ #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) - if( isView ){ - sqlite3MaterializeView(pParse, pTab, + if( nChangeFrom==0 && isView ){ + sqlite3MaterializeView(pParse, pTab, pWhere, pOrderBy, pLimit, iDataCur ); pOrderBy = 0; @@ -129376,7 +151132,7 @@ SQLITE_PRIVATE void sqlite3Update( /* Resolve the column names in all the expressions in the ** WHERE clause. */ - if( sqlite3ResolveExprNames(&sNC, pWhere) ){ + if( nChangeFrom==0 && sqlite3ResolveExprNames(&sNC, pWhere) ){ goto update_cleanup; } @@ -129390,155 +151146,226 @@ SQLITE_PRIVATE void sqlite3Update( #endif /* Jump to labelBreak to abandon further processing of this UPDATE */ - labelContinue = labelBreak = sqlite3VdbeMakeLabel(v); + labelContinue = labelBreak = sqlite3VdbeMakeLabel(pParse); /* Not an UPSERT. Normal processing. Begin by ** initialize the count of updated rows */ if( (db->flags&SQLITE_CountRows)!=0 && !pParse->pTriggerTab && !pParse->nested + && !pParse->bReturning && pUpsert==0 ){ regRowCount = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount); } - if( HasRowid(pTab) ){ + if( nChangeFrom==0 && HasRowid(pTab) ){ sqlite3VdbeAddOp3(v, OP_Null, 0, regRowSet, regOldRowid); + iEph = pParse->nTab++; + addrOpen = sqlite3VdbeAddOp3(v, OP_OpenEphemeral, iEph, 0, regRowSet); }else{ - assert( pPk!=0 ); - nPk = pPk->nKeyCol; + assert( pPk!=0 || HasRowid(pTab) ); + nPk = pPk ? pPk->nKeyCol : 0; iPk = pParse->nMem+1; pParse->nMem += nPk; + pParse->nMem += nChangeFrom; regKey = ++pParse->nMem; if( pUpsert==0 ){ + int nEphCol = nPk + nChangeFrom + (isView ? pTab->nCol : 0); iEph = pParse->nTab++; - sqlite3VdbeAddOp3(v, OP_Null, 0, iPk, iPk+nPk-1); - addrOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEph, nPk); - sqlite3VdbeSetP4KeyInfo(pParse, pPk); - } - } - - if( pUpsert ){ - /* If this is an UPSERT, then all cursors have already been opened by - ** the outer INSERT and the data cursor should be pointing at the row - ** that is to be updated. So bypass the code that searches for the - ** row(s) to be updated. - */ - pWInfo = 0; - eOnePass = ONEPASS_SINGLE; - sqlite3ExprIfFalse(pParse, pWhere, labelBreak, SQLITE_JUMPIFNULL); - }else{ - /* Begin the database scan. - ** - ** Do not consider a single-pass strategy for a multi-row update if - ** there are any triggers or foreign keys to process, or rows may - ** be deleted as a result of REPLACE conflict handling. Any of these - ** things might disturb a cursor being used to scan through the table - ** or index, causing a single-pass approach to malfunction. */ - flags = WHERE_ONEPASS_DESIRED|WHERE_SEEK_UNIQ_TABLE; - if( !pParse->nested && !pTrigger && !hasFK && !chngKey && !bReplace ){ - flags |= WHERE_ONEPASS_MULTIROW; - } - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, flags, iIdxCur); - if( pWInfo==0 ) goto update_cleanup; - - /* A one-pass strategy that might update more than one row may not - ** be used if any column of the index used for the scan is being - ** updated. Otherwise, if there is an index on "b", statements like - ** the following could create an infinite loop: - ** - ** UPDATE t1 SET b=b+1 WHERE b>? - ** - ** Fall back to ONEPASS_OFF if where.c has selected a ONEPASS_MULTI - ** strategy that uses an index for which one or more columns are being - ** updated. */ - eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); - if( eOnePass!=ONEPASS_SINGLE ){ - sqlite3MultiWrite(pParse); - if( eOnePass==ONEPASS_MULTI ){ - int iCur = aiCurOnePass[1]; - if( iCur>=0 && iCur!=iDataCur && aToOpen[iCur-iBaseCur] ){ - eOnePass = ONEPASS_OFF; + if( pPk ) sqlite3VdbeAddOp3(v, OP_Null, 0, iPk, iPk+nPk-1); + addrOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEph, nEphCol); + if( pPk ){ + KeyInfo *pKeyInfo = sqlite3KeyInfoOfIndex(pParse, pPk); + if( pKeyInfo ){ + pKeyInfo->nAllField = nEphCol; + sqlite3VdbeAppendP4(v, pKeyInfo, P4_KEYINFO); } - assert( iCur!=iDataCur || !HasRowid(pTab) ); + } + if( nChangeFrom ){ + updateFromSelect( + pParse, iEph, pPk, pChanges, pTabList, pWhere, pOrderBy, pLimit + ); +#ifndef SQLITE_OMIT_SUBQUERY + if( isView ) iDataCur = iEph; +#endif } } } - if( HasRowid(pTab) ){ - /* Read the rowid of the current row of the WHERE scan. In ONEPASS_OFF - ** mode, write the rowid into the FIFO. In either of the one-pass modes, - ** leave it in register regOldRowid. */ - sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid); - if( eOnePass==ONEPASS_OFF ){ - sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid); - } + if( nChangeFrom ){ + sqlite3MultiWrite(pParse); + eOnePass = ONEPASS_OFF; + nKey = nPk; + regKey = iPk; }else{ - /* Read the PK of the current row into an array of registers. In - ** ONEPASS_OFF mode, serialize the array into a record and store it in - ** the ephemeral table. Or, in ONEPASS_SINGLE or MULTI mode, change - ** the OP_OpenEphemeral instruction to a Noop (the ephemeral table - ** is not required) and leave the PK fields in the array of registers. */ - for(i=0; iaiColumn[i]>=0 ); - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur,pPk->aiColumn[i],iPk+i); - } - if( eOnePass ){ - if( addrOpen ) sqlite3VdbeChangeToNoop(v, addrOpen); - nKey = nPk; - regKey = iPk; + if( pUpsert ){ + /* If this is an UPSERT, then all cursors have already been opened by + ** the outer INSERT and the data cursor should be pointing at the row + ** that is to be updated. So bypass the code that searches for the + ** row(s) to be updated. + */ + pWInfo = 0; + eOnePass = ONEPASS_SINGLE; + sqlite3ExprIfFalse(pParse, pWhere, labelBreak, SQLITE_JUMPIFNULL); + bFinishSeek = 0; }else{ - sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey, - sqlite3IndexAffinityStr(db, pPk), nPk); - sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEph, regKey, iPk, nPk); + /* Begin the database scan. + ** + ** Do not consider a single-pass strategy for a multi-row update if + ** there is anything that might disrupt the cursor being used to do + ** the UPDATE: + ** (1) This is a nested UPDATE + ** (2) There are triggers + ** (3) There are FOREIGN KEY constraints + ** (4) There are REPLACE conflict handlers + ** (5) There are subqueries in the WHERE clause + */ + flags = WHERE_ONEPASS_DESIRED; + if( !pParse->nested + && !pTrigger + && !hasFK + && !chngKey + && !bReplace + && (pWhere==0 || !ExprHasProperty(pWhere, EP_Subquery)) + ){ + flags |= WHERE_ONEPASS_MULTIROW; + } + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0,0,0,flags,iIdxCur); + if( pWInfo==0 ) goto update_cleanup; + + /* A one-pass strategy that might update more than one row may not + ** be used if any column of the index used for the scan is being + ** updated. Otherwise, if there is an index on "b", statements like + ** the following could create an infinite loop: + ** + ** UPDATE t1 SET b=b+1 WHERE b>? + ** + ** Fall back to ONEPASS_OFF if where.c has selected a ONEPASS_MULTI + ** strategy that uses an index for which one or more columns are being + ** updated. */ + eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + bFinishSeek = sqlite3WhereUsesDeferredSeek(pWInfo); + if( eOnePass!=ONEPASS_SINGLE ){ + sqlite3MultiWrite(pParse); + if( eOnePass==ONEPASS_MULTI ){ + int iCur = aiCurOnePass[1]; + if( iCur>=0 && iCur!=iDataCur && aToOpen[iCur-iBaseCur] ){ + eOnePass = ONEPASS_OFF; + } + assert( iCur!=iDataCur || !HasRowid(pTab) ); + } + } + } + + if( HasRowid(pTab) ){ + /* Read the rowid of the current row of the WHERE scan. In ONEPASS_OFF + ** mode, write the rowid into the FIFO. In either of the one-pass modes, + ** leave it in register regOldRowid. */ + sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid); + if( eOnePass==ONEPASS_OFF ){ + aRegIdx[nAllIdx] = ++pParse->nMem; + sqlite3VdbeAddOp3(v, OP_Insert, iEph, regRowSet, regOldRowid); + }else{ + if( ALWAYS(addrOpen) ) sqlite3VdbeChangeToNoop(v, addrOpen); + } + }else{ + /* Read the PK of the current row into an array of registers. In + ** ONEPASS_OFF mode, serialize the array into a record and store it in + ** the ephemeral table. Or, in ONEPASS_SINGLE or MULTI mode, change + ** the OP_OpenEphemeral instruction to a Noop (the ephemeral table + ** is not required) and leave the PK fields in the array of registers. */ + for(i=0; iaiColumn[i]>=0 ); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, + pPk->aiColumn[i], iPk+i); + } + if( eOnePass ){ + if( addrOpen ) sqlite3VdbeChangeToNoop(v, addrOpen); + nKey = nPk; + regKey = iPk; + }else{ + sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey, + sqlite3IndexAffinityStr(db, pPk), nPk); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEph, regKey, iPk, nPk); + } } } if( pUpsert==0 ){ - if( eOnePass!=ONEPASS_MULTI ){ + if( nChangeFrom==0 && eOnePass!=ONEPASS_MULTI ){ sqlite3WhereEnd(pWInfo); } - + if( !isView ){ int addrOnce = 0; - + int iNotUsed1 = 0; + int iNotUsed2 = 0; + /* Open every index that needs updating. */ if( eOnePass!=ONEPASS_OFF ){ if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iBaseCur] = 0; if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iBaseCur] = 0; } - + if( eOnePass==ONEPASS_MULTI && (nIdx-(aiCurOnePass[1]>=0))>0 ){ addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); } sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, iBaseCur, - aToOpen, 0, 0); - if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce); + aToOpen, &iNotUsed1, &iNotUsed2); + if( addrOnce ){ + sqlite3VdbeJumpHereOrPopInst(v, addrOnce); + } } - + /* Top of the update loop */ if( eOnePass!=ONEPASS_OFF ){ - if( !isView && aiCurOnePass[0]!=iDataCur && aiCurOnePass[1]!=iDataCur ){ + if( aiCurOnePass[0]!=iDataCur + && aiCurOnePass[1]!=iDataCur +#ifdef SQLITE_ALLOW_ROWID_IN_VIEW + && !isView +#endif + ){ assert( pPk ); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelBreak, regKey,nKey); - VdbeCoverageNeverTaken(v); + VdbeCoverage(v); } if( eOnePass!=ONEPASS_SINGLE ){ - labelContinue = sqlite3VdbeMakeLabel(v); + labelContinue = sqlite3VdbeMakeLabel(pParse); } sqlite3VdbeAddOp2(v, OP_IsNull, pPk ? regKey : regOldRowid, labelBreak); VdbeCoverageIf(v, pPk==0); VdbeCoverageIf(v, pPk!=0); - }else if( pPk ){ - labelContinue = sqlite3VdbeMakeLabel(v); + }else if( pPk || nChangeFrom ){ + labelContinue = sqlite3VdbeMakeLabel(pParse); sqlite3VdbeAddOp2(v, OP_Rewind, iEph, labelBreak); VdbeCoverage(v); - addrTop = sqlite3VdbeAddOp2(v, OP_RowData, iEph, regKey); - sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue, regKey, 0); - VdbeCoverage(v); + addrTop = sqlite3VdbeCurrentAddr(v); + if( nChangeFrom ){ + if( !isView ){ + if( pPk ){ + for(i=0; i=0 ); + if( nChangeFrom==0 ){ + sqlite3ExprCode(pParse, pRowidExpr, regNewRowid); + }else{ + sqlite3VdbeAddOp3(v, OP_Column, iEph, iRowidExpr, regNewRowid); + } sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); VdbeCoverage(v); } @@ -129559,18 +151391,20 @@ SQLITE_PRIVATE void sqlite3Update( ** information is needed */ if( chngPk || hasFK || pTrigger ){ u32 oldmask = (hasFK ? sqlite3FkOldmask(pParse, pTab) : 0); - oldmask |= sqlite3TriggerColmask(pParse, + oldmask |= sqlite3TriggerColmask(pParse, pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError ); for(i=0; inCol; i++){ + u32 colFlags = pTab->aCol[i].colFlags; + k = sqlite3TableColumnToStorage(pTab, i) + regOld; if( oldmask==0xffffffff || (i<32 && (oldmask & MASKBIT32(i))!=0) - || (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0 + || (colFlags & COLFLAG_PRIMKEY)!=0 ){ testcase( oldmask!=0xffffffff && i==31 ); - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regOld+i); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k); }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, regOld+i); + sqlite3VdbeAddOp2(v, OP_Null, 0, k); } } if( chngRowid==0 && pPk==0 ){ @@ -129586,110 +151420,142 @@ SQLITE_PRIVATE void sqlite3Update( ** If there are one or more BEFORE triggers, then do not populate the ** registers associated with columns that are (a) not modified by ** this UPDATE statement and (b) not accessed by new.* references. The - ** values for registers not modified by the UPDATE must be reloaded from - ** the database after the BEFORE triggers are fired anyway (as the trigger + ** values for registers not modified by the UPDATE must be reloaded from + ** the database after the BEFORE triggers are fired anyway (as the trigger ** may have modified them). So not loading those that are not going to ** be used eliminates some redundant opcodes. */ newmask = sqlite3TriggerColmask( pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError ); - for(i=0; inCol; i++){ + for(i=0, k=regNew; inCol; i++, k++){ if( i==pTab->iPKey ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i); + sqlite3VdbeAddOp2(v, OP_Null, 0, k); + }else if( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)!=0 ){ + if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) k--; }else{ j = aXRef[i]; if( j>=0 ){ - sqlite3ExprCode(pParse, pChanges->a[j].pExpr, regNew+i); + if( nChangeFrom ){ + int nOff = (isView ? pTab->nCol : nPk); + assert( eOnePass==ONEPASS_OFF ); + sqlite3VdbeAddOp3(v, OP_Column, iEph, nOff+j, k); + }else{ + sqlite3ExprCode(pParse, pChanges->a[j].pExpr, k); + } }else if( 0==(tmask&TRIGGER_BEFORE) || i>31 || (newmask & MASKBIT32(i)) ){ - /* This branch loads the value of a column that will not be changed + /* This branch loads the value of a column that will not be changed ** into a register. This is done if there are no BEFORE triggers, or ** if there are one or more BEFORE triggers that use this value via ** a new.* reference in a trigger program. */ testcase( i==31 ); testcase( i==32 ); - sqlite3ExprCodeGetColumnToReg(pParse, pTab, i, iDataCur, regNew+i); - if( tmask & TRIGGER_BEFORE ){ - /* This value will be recomputed in After-BEFORE-trigger-reload-loop - ** below, so make sure that it is not cached and reused. - ** Ticket d85fffd6ffe856092ed8daefa811b1e399706b28. */ - sqlite3ExprCacheRemove(pParse, regNew+i, 1); - } + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k); + bFinishSeek = 0; }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i); + sqlite3VdbeAddOp2(v, OP_Null, 0, k); } } } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( pTab->tabFlags & TF_HasGenerated ){ + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + sqlite3ComputeGeneratedColumns(pParse, regNew, pTab); + } +#endif /* Fire any BEFORE UPDATE triggers. This happens before constraints are ** verified. One could argue that this is wrong. */ if( tmask&TRIGGER_BEFORE ){ sqlite3TableAffinity(v, pTab, regNew); - sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, + sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, TRIGGER_BEFORE, pTab, regOldRowid, onError, labelContinue); - /* The row-trigger may have deleted the row being updated. In this - ** case, jump to the next row. No updates or AFTER triggers are - ** required. This behavior - what happens when the row being updated - ** is deleted or renamed by a BEFORE trigger - is left undefined in the - ** documentation. - */ - if( pPk ){ - sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue,regKey,nKey); - VdbeCoverage(v); - }else{ - sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue, regOldRowid); - VdbeCoverage(v); - } - - /* After-BEFORE-trigger-reload-loop: - ** If it did not delete it, the BEFORE trigger may still have modified - ** some of the columns of the row being updated. Load the values for - ** all columns not modified by the update statement into their registers - ** in case this has happened. Only unmodified columns are reloaded. - ** The values computed for modified columns use the values before the - ** BEFORE trigger runs. See test case trigger1-18.0 (added 2018-04-26) - ** for an example. - */ - for(i=0; inCol; i++){ - if( aXRef[i]<0 && i!=pTab->iPKey ){ - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regNew+i); + if( !isView ){ + /* The row-trigger may have deleted the row being updated. In this + ** case, jump to the next row. No updates or AFTER triggers are + ** required. This behavior - what happens when the row being updated + ** is deleted or renamed by a BEFORE trigger - is left undefined in the + ** documentation. + */ + if( pPk ){ + sqlite3VdbeAddOp4Int(v, OP_NotFound,iDataCur,labelContinue,regKey,nKey); + VdbeCoverage(v); + }else{ + sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue,regOldRowid); + VdbeCoverage(v); } + + /* After-BEFORE-trigger-reload-loop: + ** If it did not delete it, the BEFORE trigger may still have modified + ** some of the columns of the row being updated. Load the values for + ** all columns not modified by the update statement into their registers + ** in case this has happened. Only unmodified columns are reloaded. + ** The values computed for modified columns use the values before the + ** BEFORE trigger runs. See test case trigger1-18.0 (added 2018-04-26) + ** for an example. + */ + for(i=0, k=regNew; inCol; i++, k++){ + if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){ + if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) k--; + }else if( aXRef[i]<0 && i!=pTab->iPKey ){ + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k); + } + } +#ifndef SQLITE_OMIT_GENERATED_COLUMNS + if( pTab->tabFlags & TF_HasGenerated ){ + testcase( pTab->tabFlags & TF_HasVirtual ); + testcase( pTab->tabFlags & TF_HasStored ); + sqlite3ComputeGeneratedColumns(pParse, regNew, pTab); + } +#endif } } if( !isView ){ - int addr1 = 0; /* Address of jump instruction */ - /* Do constraint checks. */ assert( regOldRowid>0 ); sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur, regNewRowid, regOldRowid, chngKey, onError, labelContinue, &bReplace, aXRef, 0); + /* If REPLACE conflict handling may have been used, or if the PK of the + ** row is changing, then the GenerateConstraintChecks() above may have + ** moved cursor iDataCur. Reseek it. */ + if( bReplace || chngKey ){ + if( pPk ){ + sqlite3VdbeAddOp4Int(v, OP_NotFound,iDataCur,labelContinue,regKey,nKey); + }else{ + sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue,regOldRowid); + } + VdbeCoverage(v); + } + /* Do FK constraint checks. */ if( hasFK ){ sqlite3FkCheck(pParse, pTab, regOldRowid, 0, aXRef, chngKey); } /* Delete the index entries associated with the current record. */ - if( bReplace || chngKey ){ - if( pPk ){ - addr1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey); - }else{ - addr1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid); - } - VdbeCoverageNeverTaken(v); - } sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx, -1); + /* We must run the OP_FinishSeek opcode to resolve a prior + ** OP_DeferredSeek if there is any possibility that there have been + ** no OP_Column opcodes since the OP_DeferredSeek was issued. But + ** we want to avoid the OP_FinishSeek if possible, as running it + ** costs CPU cycles. */ + if( bFinishSeek ){ + sqlite3VdbeAddOp1(v, OP_FinishSeek, iDataCur); + } + /* If changing the rowid value, or if there are foreign key constraints ** to process, delete the old record. Otherwise, add a noop OP_Delete ** to invoke the pre-update hook. ** - ** That (regNew==regnewRowid+1) is true is also important for the + ** That (regNew==regnewRowid+1) is true is also important for the ** pre-update hook. If the caller invokes preupdate_new(), the returned ** value is copied from memory cell (regNewRowid+1+iCol), where iCol ** is the column index supplied by the user. @@ -129712,37 +151578,36 @@ SQLITE_PRIVATE void sqlite3Update( sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, 0); } #endif - if( bReplace || chngKey ){ - sqlite3VdbeJumpHere(v, addr1); - } if( hasFK ){ sqlite3FkCheck(pParse, pTab, 0, regNewRowid, aXRef, chngKey); } - + /* Insert the new index entries and the new record. */ sqlite3CompleteInsertion( - pParse, pTab, iDataCur, iIdxCur, regNewRowid, aRegIdx, - OPFLAG_ISUPDATE | (eOnePass==ONEPASS_MULTI ? OPFLAG_SAVEPOSITION : 0), + pParse, pTab, iDataCur, iIdxCur, regNewRowid, aRegIdx, + OPFLAG_ISUPDATE | (eOnePass==ONEPASS_MULTI ? OPFLAG_SAVEPOSITION : 0), 0, 0 ); /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to ** handle rows (possibly in other tables) that refer via a foreign key - ** to the row just updated. */ + ** to the row just updated. */ if( hasFK ){ sqlite3FkActions(pParse, pTab, pChanges, regOldRowid, aXRef, chngKey); } } - /* Increment the row counter + /* Increment the row counter */ if( regRowCount ){ sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1); } - sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, - TRIGGER_AFTER, pTab, regOldRowid, onError, labelContinue); + if( pTrigger ){ + sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, + TRIGGER_AFTER, pTab, regOldRowid, onError, labelContinue); + } /* Repeat the above with the next record to be updated, until ** all record selected by the WHERE clause have been updated. @@ -129752,11 +151617,9 @@ SQLITE_PRIVATE void sqlite3Update( }else if( eOnePass==ONEPASS_MULTI ){ sqlite3VdbeResolveLabel(v, labelContinue); sqlite3WhereEnd(pWInfo); - }else if( pPk ){ + }else{ sqlite3VdbeResolveLabel(v, labelContinue); sqlite3VdbeAddOp2(v, OP_Next, iEph, addrTop); VdbeCoverage(v); - }else{ - sqlite3VdbeGoto(v, labelContinue); } sqlite3VdbeResolveLabel(v, labelBreak); @@ -129773,9 +151636,7 @@ SQLITE_PRIVATE void sqlite3Update( ** that information. */ if( regRowCount ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, regRowCount, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows updated", SQLITE_STATIC); + sqlite3CodeChangeCount(v, regRowCount, "rows updated"); } update_cleanup: @@ -129784,7 +151645,7 @@ update_cleanup: sqlite3SrcListDelete(db, pTabList); sqlite3ExprListDelete(db, pChanges); sqlite3ExprDelete(db, pWhere); -#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) +#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) sqlite3ExprListDelete(db, pOrderBy); sqlite3ExprDelete(db, pLimit); #endif @@ -129804,8 +151665,8 @@ update_cleanup: /* ** Generate code for an UPDATE of a virtual table. ** -** There are two possible strategies - the default and the special -** "onepass" strategy. Onepass is only used if the virtual table +** There are two possible strategies - the default and the special +** "onepass" strategy. Onepass is only used if the virtual table ** implementation indicates that pWhere may match at most one row. ** ** The default strategy is to create an ephemeral table that contains @@ -129837,11 +151698,11 @@ static void updateVirtualTable( int i; /* Loop counter */ sqlite3 *db = pParse->db; /* Database connection */ const char *pVTab = (const char*)sqlite3GetVTable(db, pTab); - WhereInfo *pWInfo; + WhereInfo *pWInfo = 0; int nArg = 2 + pTab->nCol; /* Number of arguments to VUpdate */ int regArg; /* First register in VUpdate arg array */ int regRec; /* Register in which to assemble record */ - int regRowid; /* Register for ephem table rowid */ + int regRowid; /* Register for ephemeral table rowid */ int iCsr = pSrc->a[0].iCursor; /* Cursor used for virtual table scan */ int aDummy[2]; /* Unused arg for sqlite3WhereOkOnePass() */ int eOnePass; /* True to use onepass strategy */ @@ -129855,73 +151716,119 @@ static void updateVirtualTable( addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg); regArg = pParse->nMem + 1; pParse->nMem += nArg; - regRec = ++pParse->nMem; - regRowid = ++pParse->nMem; - - /* Start scanning the virtual table */ - pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0,0,WHERE_ONEPASS_DESIRED,0); - if( pWInfo==0 ) return; - - /* Populate the argument registers. */ - for(i=0; inCol; i++){ - if( aXRef[i]>=0 ){ - sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i); + if( pSrc->nSrc>1 ){ + Index *pPk = 0; + Expr *pRow; + ExprList *pList; + if( HasRowid(pTab) ){ + if( pRowid ){ + pRow = sqlite3ExprDup(db, pRowid, 0); + }else{ + pRow = sqlite3PExpr(pParse, TK_ROW, 0, 0); + } }else{ - sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i); - sqlite3VdbeChangeP5(v, 1); /* Enable sqlite3_vtab_nochange() */ + i16 iPk; /* PRIMARY KEY column */ + pPk = sqlite3PrimaryKeyIndex(pTab); + assert( pPk!=0 ); + assert( pPk->nKeyCol==1 ); + iPk = pPk->aiColumn[0]; + if( aXRef[iPk]>=0 ){ + pRow = sqlite3ExprDup(db, pChanges->a[aXRef[iPk]].pExpr, 0); + }else{ + pRow = exprRowColumn(pParse, iPk); + } } - } - if( HasRowid(pTab) ){ - sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg); - if( pRowid ){ - sqlite3ExprCode(pParse, pRowid, regArg+1); + pList = sqlite3ExprListAppend(pParse, 0, pRow); + + for(i=0; inCol; i++){ + if( aXRef[i]>=0 ){ + pList = sqlite3ExprListAppend(pParse, pList, + sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0) + ); + }else{ + Expr *pRowExpr = exprRowColumn(pParse, i); + if( pRowExpr ) pRowExpr->op2 = OPFLAG_NOCHNG; + pList = sqlite3ExprListAppend(pParse, pList, pRowExpr); + } + } + + updateFromSelect(pParse, ephemTab, pPk, pList, pSrc, pWhere, 0, 0); + sqlite3ExprListDelete(db, pList); + eOnePass = ONEPASS_OFF; + }else{ + regRec = ++pParse->nMem; + regRowid = ++pParse->nMem; + + /* Start scanning the virtual table */ + pWInfo = sqlite3WhereBegin( + pParse, pSrc, pWhere, 0, 0, 0, WHERE_ONEPASS_DESIRED, 0 + ); + if( pWInfo==0 ) return; + + /* Populate the argument registers. */ + for(i=0; inCol; i++){ + assert( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)==0 ); + if( aXRef[i]>=0 ){ + sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i); + }else{ + sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i); + sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG);/* For sqlite3_vtab_nochange() */ + } + } + if( HasRowid(pTab) ){ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg); + if( pRowid ){ + sqlite3ExprCode(pParse, pRowid, regArg+1); + }else{ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1); + } }else{ - sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1); + Index *pPk; /* PRIMARY KEY index */ + i16 iPk; /* PRIMARY KEY column */ + pPk = sqlite3PrimaryKeyIndex(pTab); + assert( pPk!=0 ); + assert( pPk->nKeyCol==1 ); + iPk = pPk->aiColumn[0]; + sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, iPk, regArg); + sqlite3VdbeAddOp2(v, OP_SCopy, regArg+2+iPk, regArg+1); } - }else{ - Index *pPk; /* PRIMARY KEY index */ - i16 iPk; /* PRIMARY KEY column */ - pPk = sqlite3PrimaryKeyIndex(pTab); - assert( pPk!=0 ); - assert( pPk->nKeyCol==1 ); - iPk = pPk->aiColumn[0]; - sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, iPk, regArg); - sqlite3VdbeAddOp2(v, OP_SCopy, regArg+2+iPk, regArg+1); - } - eOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy); + eOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy); - /* There is no ONEPASS_MULTI on virtual tables */ - assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE ); + /* There is no ONEPASS_MULTI on virtual tables */ + assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE ); - if( eOnePass ){ - /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded - ** above. */ - sqlite3VdbeChangeToNoop(v, addr); - sqlite3VdbeAddOp1(v, OP_Close, iCsr); - }else{ - /* Create a record from the argument register contents and insert it into - ** the ephemeral table. */ - sqlite3MultiWrite(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec); -#ifdef SQLITE_DEBUG - /* Signal an assert() within OP_MakeRecord that it is allowed to - ** accept no-change records with serial_type 10 */ - sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC); + if( eOnePass ){ + /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded + ** above. */ + sqlite3VdbeChangeToNoop(v, addr); + sqlite3VdbeAddOp1(v, OP_Close, iCsr); + }else{ + /* Create a record from the argument register contents and insert it into + ** the ephemeral table. */ + sqlite3MultiWrite(pParse); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec); +#if defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_NULL_TRIM) + /* Signal an assert() within OP_MakeRecord that it is allowed to + ** accept no-change records with serial_type 10 */ + sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC); #endif - sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid); - sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid); + sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid); + sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid); + } } if( eOnePass==ONEPASS_OFF ){ /* End the virtual table scan */ - sqlite3WhereEnd(pWInfo); + if( pSrc->nSrc==1 ){ + sqlite3WhereEnd(pWInfo); + } - /* Begin scannning through the ephemeral table. */ + /* Begin scanning through the ephemeral table. */ addr = sqlite3VdbeAddOp1(v, OP_Rewind, ephemTab); VdbeCoverage(v); - /* Extract arguments from the current row of the ephemeral table and + /* Extract arguments from the current row of the ephemeral table and ** invoke the VUpdate method. */ for(i=0; ipNextUpsert; sqlite3ExprListDelete(db, p->pUpsertTarget); sqlite3ExprDelete(db, p->pUpsertTargetWhere); sqlite3ExprListDelete(db, p->pUpsertSet); sqlite3ExprDelete(db, p->pUpsertWhere); + sqlite3DbFree(db, p->pToFree); sqlite3DbFree(db, p); - } + p = pNext; + }while( p ); } +SQLITE_PRIVATE void sqlite3UpsertDelete(sqlite3 *db, Upsert *p){ + if( p ) upsertDelete(db, p); +} + /* ** Duplicate an Upsert object. @@ -129985,7 +151899,8 @@ SQLITE_PRIVATE Upsert *sqlite3UpsertDup(sqlite3 *db, Upsert *p){ sqlite3ExprListDup(db, p->pUpsertTarget, 0), sqlite3ExprDup(db, p->pUpsertTargetWhere, 0), sqlite3ExprListDup(db, p->pUpsertSet, 0), - sqlite3ExprDup(db, p->pUpsertWhere, 0) + sqlite3ExprDup(db, p->pUpsertWhere, 0), + sqlite3UpsertDup(db, p->pNextUpsert) ); } @@ -129997,22 +151912,25 @@ SQLITE_PRIVATE Upsert *sqlite3UpsertNew( ExprList *pTarget, /* Target argument to ON CONFLICT, or NULL */ Expr *pTargetWhere, /* Optional WHERE clause on the target */ ExprList *pSet, /* UPDATE columns, or NULL for a DO NOTHING */ - Expr *pWhere /* WHERE clause for the ON CONFLICT UPDATE */ + Expr *pWhere, /* WHERE clause for the ON CONFLICT UPDATE */ + Upsert *pNext /* Next ON CONFLICT clause in the list */ ){ Upsert *pNew; - pNew = sqlite3DbMallocRaw(db, sizeof(Upsert)); + pNew = sqlite3DbMallocZero(db, sizeof(Upsert)); if( pNew==0 ){ sqlite3ExprListDelete(db, pTarget); sqlite3ExprDelete(db, pTargetWhere); sqlite3ExprListDelete(db, pSet); sqlite3ExprDelete(db, pWhere); + sqlite3UpsertDelete(db, pNext); return 0; }else{ pNew->pUpsertTarget = pTarget; pNew->pUpsertTargetWhere = pTargetWhere; pNew->pUpsertSet = pSet; pNew->pUpsertWhere = pWhere; - pNew->pUpsertIdx = 0; + pNew->isDoUpdate = pSet!=0; + pNew->pNextUpsert = pNext; } return pNew; } @@ -130037,6 +151955,7 @@ SQLITE_PRIVATE int sqlite3UpsertAnalyzeTarget( Expr *pTerm; /* One term of the conflict-target clause */ NameContext sNC; /* Context for resolving symbolic names */ Expr sCol[2]; /* Index column converted into an Expr */ + int nClause = 0; /* Counter of ON CONFLICT clauses */ assert( pTabList->nSrc==1 ); assert( pTabList->a[0].pTab!=0 ); @@ -130050,87 +151969,132 @@ SQLITE_PRIVATE int sqlite3UpsertAnalyzeTarget( memset(&sNC, 0, sizeof(sNC)); sNC.pParse = pParse; sNC.pSrcList = pTabList; - rc = sqlite3ResolveExprListNames(&sNC, pUpsert->pUpsertTarget); - if( rc ) return rc; - rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertTargetWhere); - if( rc ) return rc; + for(; pUpsert && pUpsert->pUpsertTarget; + pUpsert=pUpsert->pNextUpsert, nClause++){ + rc = sqlite3ResolveExprListNames(&sNC, pUpsert->pUpsertTarget); + if( rc ) return rc; + rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertTargetWhere); + if( rc ) return rc; - /* Check to see if the conflict target matches the rowid. */ - pTab = pTabList->a[0].pTab; - pTarget = pUpsert->pUpsertTarget; - iCursor = pTabList->a[0].iCursor; - if( HasRowid(pTab) - && pTarget->nExpr==1 - && (pTerm = pTarget->a[0].pExpr)->op==TK_COLUMN - && pTerm->iColumn==XN_ROWID - ){ - /* The conflict-target is the rowid of the primary table */ - assert( pUpsert->pUpsertIdx==0 ); - return SQLITE_OK; - } - - /* Initialize sCol[0..1] to be an expression parse tree for a - ** single column of an index. The sCol[0] node will be the TK_COLLATE - ** operator and sCol[1] will be the TK_COLUMN operator. Code below - ** will populate the specific collation and column number values - ** prior to comparing against the conflict-target expression. - */ - memset(sCol, 0, sizeof(sCol)); - sCol[0].op = TK_COLLATE; - sCol[0].pLeft = &sCol[1]; - sCol[1].op = TK_COLUMN; - sCol[1].iTable = pTabList->a[0].iCursor; - - /* Check for matches against other indexes */ - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - int ii, jj, nn; - if( !IsUniqueIndex(pIdx) ) continue; - if( pTarget->nExpr!=pIdx->nKeyCol ) continue; - if( pIdx->pPartIdxWhere ){ - if( pUpsert->pUpsertTargetWhere==0 ) continue; - if( sqlite3ExprCompare(pParse, pUpsert->pUpsertTargetWhere, - pIdx->pPartIdxWhere, iCursor)!=0 ){ - continue; - } - } - nn = pIdx->nKeyCol; - for(ii=0; iiazColl[ii]; - if( pIdx->aiColumn[ii]==XN_EXPR ){ - assert( pIdx->aColExpr!=0 ); - assert( pIdx->aColExpr->nExpr>ii ); - pExpr = pIdx->aColExpr->a[ii].pExpr; - if( pExpr->op!=TK_COLLATE ){ - sCol[0].pLeft = pExpr; - pExpr = &sCol[0]; - } - }else{ - sCol[0].pLeft = &sCol[1]; - sCol[1].iColumn = pIdx->aiColumn[ii]; - pExpr = &sCol[0]; - } - for(jj=0; jja[jj].pExpr, pExpr,iCursor)<2 ){ - break; /* Column ii of the index matches column jj of target */ - } - } - if( jj>=nn ){ - /* The target contains no match for column jj of the index */ - break; - } - } - if( iia[0].pTab; + pTarget = pUpsert->pUpsertTarget; + iCursor = pTabList->a[0].iCursor; + if( HasRowid(pTab) + && pTarget->nExpr==1 + && (pTerm = pTarget->a[0].pExpr)->op==TK_COLUMN + && pTerm->iColumn==XN_ROWID + ){ + /* The conflict-target is the rowid of the primary table */ + assert( pUpsert->pUpsertIdx==0 ); continue; } - pUpsert->pUpsertIdx = pIdx; - return SQLITE_OK; + + /* Initialize sCol[0..1] to be an expression parse tree for a + ** single column of an index. The sCol[0] node will be the TK_COLLATE + ** operator and sCol[1] will be the TK_COLUMN operator. Code below + ** will populate the specific collation and column number values + ** prior to comparing against the conflict-target expression. + */ + memset(sCol, 0, sizeof(sCol)); + sCol[0].op = TK_COLLATE; + sCol[0].pLeft = &sCol[1]; + sCol[1].op = TK_COLUMN; + sCol[1].iTable = pTabList->a[0].iCursor; + + /* Check for matches against other indexes */ + for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + int ii, jj, nn; + if( !IsUniqueIndex(pIdx) ) continue; + if( pTarget->nExpr!=pIdx->nKeyCol ) continue; + if( pIdx->pPartIdxWhere ){ + if( pUpsert->pUpsertTargetWhere==0 ) continue; + if( sqlite3ExprCompare(pParse, pUpsert->pUpsertTargetWhere, + pIdx->pPartIdxWhere, iCursor)!=0 ){ + continue; + } + } + nn = pIdx->nKeyCol; + for(ii=0; iiazColl[ii]; + if( pIdx->aiColumn[ii]==XN_EXPR ){ + assert( pIdx->aColExpr!=0 ); + assert( pIdx->aColExpr->nExpr>ii ); + assert( pIdx->bHasExpr ); + pExpr = pIdx->aColExpr->a[ii].pExpr; + if( pExpr->op!=TK_COLLATE ){ + sCol[0].pLeft = pExpr; + pExpr = &sCol[0]; + } + }else{ + sCol[0].pLeft = &sCol[1]; + sCol[1].iColumn = pIdx->aiColumn[ii]; + pExpr = &sCol[0]; + } + for(jj=0; jja[jj].pExpr,pExpr,iCursor)<2 ){ + break; /* Column ii of the index matches column jj of target */ + } + } + if( jj>=nn ){ + /* The target contains no match for column jj of the index */ + break; + } + } + if( iipUpsertIdx = pIdx; + break; + } + if( pUpsert->pUpsertIdx==0 ){ + char zWhich[16]; + if( nClause==0 && pUpsert->pNextUpsert==0 ){ + zWhich[0] = 0; + }else{ + sqlite3_snprintf(sizeof(zWhich),zWhich,"%r ", nClause+1); + } + sqlite3ErrorMsg(pParse, "%sON CONFLICT clause does not match any " + "PRIMARY KEY or UNIQUE constraint", zWhich); + return SQLITE_ERROR; + } } - sqlite3ErrorMsg(pParse, "ON CONFLICT clause does not match any " - "PRIMARY KEY or UNIQUE constraint"); - return SQLITE_ERROR; + return SQLITE_OK; +} + +/* +** Return true if pUpsert is the last ON CONFLICT clause with a +** conflict target, or if pUpsert is followed by another ON CONFLICT +** clause that targets the INTEGER PRIMARY KEY. +*/ +SQLITE_PRIVATE int sqlite3UpsertNextIsIPK(Upsert *pUpsert){ + Upsert *pNext; + if( NEVER(pUpsert==0) ) return 0; + pNext = pUpsert->pNextUpsert; + if( pNext==0 ) return 1; + if( pNext->pUpsertTarget==0 ) return 1; + if( pNext->pUpsertIdx==0 ) return 1; + return 0; +} + +/* +** Given the list of ON CONFLICT clauses described by pUpsert, and +** a particular index pIdx, return a pointer to the particular ON CONFLICT +** clause that applies to the index. Or, if the index is not subject to +** any ON CONFLICT clause, return NULL. +*/ +SQLITE_PRIVATE Upsert *sqlite3UpsertOfIndex(Upsert *pUpsert, Index *pIdx){ + while( + pUpsert + && pUpsert->pUpsertTarget!=0 + && pUpsert->pUpsertIdx!=pIdx + ){ + pUpsert = pUpsert->pNextUpsert; + } + return pUpsert; } /* @@ -130152,9 +152116,14 @@ SQLITE_PRIVATE void sqlite3UpsertDoUpdate( Vdbe *v = pParse->pVdbe; sqlite3 *db = pParse->db; SrcList *pSrc; /* FROM clause for the UPDATE */ - int iDataCur = pUpsert->iDataCur; + int iDataCur; + int i; + Upsert *pTop = pUpsert; assert( v!=0 ); + assert( pUpsert!=0 ); + iDataCur = pUpsert->iDataCur; + pUpsert = sqlite3UpsertOfIndex(pTop, pIdx); VdbeNoopComment((v, "Begin DO UPDATE of UPSERT")); if( pIdx && iCur!=iDataCur ){ if( HasRowid(pTab) ){ @@ -130167,31 +152136,35 @@ SQLITE_PRIVATE void sqlite3UpsertDoUpdate( Index *pPk = sqlite3PrimaryKeyIndex(pTab); int nPk = pPk->nKeyCol; int iPk = pParse->nMem+1; - int i; pParse->nMem += nPk; for(i=0; iaiColumn[i]>=0 ); - k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]); + k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[i]); sqlite3VdbeAddOp3(v, OP_Column, iCur, k, iPk+i); VdbeComment((v, "%s.%s", pIdx->zName, - pTab->aCol[pPk->aiColumn[i]].zName)); + pTab->aCol[pPk->aiColumn[i]].zCnName)); } sqlite3VdbeVerifyAbortable(v, OE_Abort); i = sqlite3VdbeAddOp4Int(v, OP_Found, iDataCur, 0, iPk, nPk); VdbeCoverage(v); - sqlite3VdbeAddOp4(v, OP_Halt, SQLITE_CORRUPT, OE_Abort, 0, + sqlite3VdbeAddOp4(v, OP_Halt, SQLITE_CORRUPT, OE_Abort, 0, "corrupt database", P4_STATIC); + sqlite3MayAbort(pParse); sqlite3VdbeJumpHere(v, i); } } - /* pUpsert does not own pUpsertSrc - the outer INSERT statement does. So - ** we have to make a copy before passing it down into sqlite3Update() */ - pSrc = sqlite3SrcListDup(db, pUpsert->pUpsertSrc, 0); - sqlite3Update(pParse, pSrc, pUpsert->pUpsertSet, - pUpsert->pUpsertWhere, OE_Abort, 0, 0, pUpsert); - pUpsert->pUpsertSet = 0; /* Will have been deleted by sqlite3Update() */ - pUpsert->pUpsertWhere = 0; /* Will have been deleted by sqlite3Update() */ + /* pUpsert does not own pTop->pUpsertSrc - the outer INSERT statement does. + ** So we have to make a copy before passing it down into sqlite3Update() */ + pSrc = sqlite3SrcListDup(db, pTop->pUpsertSrc, 0); + /* excluded.* columns of type REAL need to be converted to a hard real */ + for(i=0; inCol; i++){ + if( pTab->aCol[i].affinity==SQLITE_AFF_REAL ){ + sqlite3VdbeAddOp1(v, OP_RealAffinity, pTop->regData+i); + } + } + sqlite3Update(pParse, pSrc, sqlite3ExprListDup(db,pUpsert->pUpsertSet,0), + sqlite3ExprDup(db,pUpsert->pUpsertWhere,0), OE_Abort, 0, 0, pUpsert); VdbeNoopComment((v, "End DO UPDATE of UPSERT")); } @@ -130242,7 +152215,7 @@ static int execSql(sqlite3 *db, char **pzErrMsg, const char *zSql){ assert( sqlite3_strnicmp(zSql,"SELECT",6)==0 ); /* The secondary SQL must be one of CREATE TABLE, CREATE INDEX, ** or INSERT. Historically there have been attacks that first - ** corrupt the sqlite_master.sql field with other kinds of statements + ** corrupt the sqlite_schema.sql field with other kinds of statements ** then run VACUUM to get those statements to execute at inappropriate ** times. */ if( zSubSql @@ -130303,16 +152276,17 @@ static int execSqlF(sqlite3 *db, char **pzErrMsg, const char *zSql, ...){ ** transient would cause the database file to appear to be deleted ** following reboot. */ -SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse, Token *pNm){ +SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse, Token *pNm, Expr *pInto){ Vdbe *v = sqlite3GetVdbe(pParse); int iDb = 0; - if( v==0 ) return; + if( v==0 ) goto build_vacuum_end; + if( pParse->nErr ) goto build_vacuum_end; if( pNm ){ #ifndef SQLITE_BUG_COMPATIBLE_20160819 /* Default behavior: Report an error if the argument to VACUUM is ** not recognized */ iDb = sqlite3TwoPartName(pParse, pNm, pNm, &pNm); - if( iDb<0 ) return; + if( iDb<0 ) goto build_vacuum_end; #else /* When SQLITE_BUG_COMPATIBLE_20160819 is defined, unrecognized arguments ** to VACUUM are silently ignored. This is a back-out of a bug fix that @@ -130324,40 +152298,67 @@ SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse, Token *pNm){ #endif } if( iDb!=1 ){ - sqlite3VdbeAddOp1(v, OP_Vacuum, iDb); + int iIntoReg = 0; + if( pInto && sqlite3ResolveSelfReference(pParse,0,0,pInto,0)==0 ){ + iIntoReg = ++pParse->nMem; + sqlite3ExprCode(pParse, pInto, iIntoReg); + } + sqlite3VdbeAddOp2(v, OP_Vacuum, iDb, iIntoReg); sqlite3VdbeUsesBtree(v, iDb); } +build_vacuum_end: + sqlite3ExprDelete(pParse->db, pInto); return; } /* ** This routine implements the OP_Vacuum opcode of the VDBE. */ -SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ +SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum( + char **pzErrMsg, /* Write error message here */ + sqlite3 *db, /* Database connection */ + int iDb, /* Which attached DB to vacuum */ + sqlite3_value *pOut /* Write results here, if not NULL. VACUUM INTO */ +){ int rc = SQLITE_OK; /* Return code from service routines */ Btree *pMain; /* The database being vacuumed */ Btree *pTemp; /* The temporary database we vacuum into */ - u16 saved_mDbFlags; /* Saved value of db->mDbFlags */ - u32 saved_flags; /* Saved value of db->flags */ - int saved_nChange; /* Saved value of db->nChange */ - int saved_nTotalChange; /* Saved value of db->nTotalChange */ + u32 saved_mDbFlags; /* Saved value of db->mDbFlags */ + u64 saved_flags; /* Saved value of db->flags */ + i64 saved_nChange; /* Saved value of db->nChange */ + i64 saved_nTotalChange; /* Saved value of db->nTotalChange */ + u32 saved_openFlags; /* Saved value of db->openFlags */ u8 saved_mTrace; /* Saved trace settings */ Db *pDb = 0; /* Database to detach at end of vacuum */ int isMemDb; /* True if vacuuming a :memory: database */ int nRes; /* Bytes of reserved space at the end of each page */ int nDb; /* Number of attached databases */ const char *zDbMain; /* Schema name of database to vacuum */ + const char *zOut; /* Name of output file */ + u32 pgflags = PAGER_SYNCHRONOUS_OFF; /* sync flags for output db */ if( !db->autoCommit ){ sqlite3SetString(pzErrMsg, db, "cannot VACUUM from within a transaction"); - return SQLITE_ERROR; + return SQLITE_ERROR; /* IMP: R-12218-18073 */ } if( db->nVdbeActive>1 ){ sqlite3SetString(pzErrMsg, db,"cannot VACUUM - SQL statements in progress"); - return SQLITE_ERROR; + return SQLITE_ERROR; /* IMP: R-15610-35227 */ + } + saved_openFlags = db->openFlags; + if( pOut ){ + if( sqlite3_value_type(pOut)!=SQLITE_TEXT ){ + sqlite3SetString(pzErrMsg, db, "non-text filename"); + return SQLITE_ERROR; + } + zOut = (const char*)sqlite3_value_text(pOut); + db->openFlags &= ~SQLITE_OPEN_READONLY; + db->openFlags |= SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE; + }else{ + zOut = ""; } - /* Save the current value of the database flags so that it can be + /* Save the current value of the database flags so that it can be ** restored before returning. Then set the writable-schema flag, and ** disable CHECK and foreign key constraints. */ saved_flags = db->flags; @@ -130367,7 +152368,8 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ saved_mTrace = db->mTrace; db->flags |= SQLITE_WriteSchema | SQLITE_IgnoreChecks; db->mDbFlags |= DBFLAG_PreferBuiltin | DBFLAG_Vacuum; - db->flags &= ~(SQLITE_ForeignKeys | SQLITE_ReverseOrder | SQLITE_CountRows); + db->flags &= ~(u64)(SQLITE_ForeignKeys | SQLITE_ReverseOrder + | SQLITE_Defensive | SQLITE_CountRows); db->mTrace = 0; zDbMain = db->aDb[iDb].zDbSName; @@ -130380,7 +152382,7 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ ** (possibly synchronous) transaction opened on the main database before ** sqlite3BtreeCopyFile() is called. ** - ** An optimisation would be to use a non-journaled pager. + ** An optimization would be to use a non-journaled pager. ** (Later:) I tried setting "PRAGMA vacuum_db.journal_mode=OFF" but ** that actually made the VACUUM run slower. Very little journalling ** actually occurs when doing a vacuum since the vacuum_db is initially @@ -130389,35 +152391,33 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ ** to write the journal header file. */ nDb = db->nDb; - rc = execSql(db, pzErrMsg, "ATTACH''AS vacuum_db"); + rc = execSqlF(db, pzErrMsg, "ATTACH %Q AS vacuum_db", zOut); + db->openFlags = saved_openFlags; if( rc!=SQLITE_OK ) goto end_of_vacuum; assert( (db->nDb-1)==nDb ); pDb = &db->aDb[nDb]; assert( strcmp(pDb->zDbSName,"vacuum_db")==0 ); pTemp = pDb->pBt; + if( pOut ){ + sqlite3_file *id = sqlite3PagerFile(sqlite3BtreePager(pTemp)); + i64 sz = 0; + if( id->pMethods!=0 && (sqlite3OsFileSize(id, &sz)!=SQLITE_OK || sz>0) ){ + rc = SQLITE_ERROR; + sqlite3SetString(pzErrMsg, db, "output file already exists"); + goto end_of_vacuum; + } + db->mDbFlags |= DBFLAG_VacuumInto; - /* The call to execSql() to attach the temp database has left the file - ** locked (as there was more than one active statement when the transaction - ** to read the schema was concluded. Unlock it here so that this doesn't - ** cause problems for the call to BtreeSetPageSize() below. */ - sqlite3BtreeCommit(pTemp); - - nRes = sqlite3BtreeGetOptimalReserve(pMain); - - /* A VACUUM cannot change the pagesize of an encrypted database. */ -#ifdef SQLITE_HAS_CODEC - if( db->nextPagesize ){ - extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*); - int nKey; - char *zKey; - sqlite3CodecGetKey(db, iDb, (void**)&zKey, &nKey); - if( nKey ) db->nextPagesize = 0; + /* For a VACUUM INTO, the pager-flags are set to the same values as + ** they are for the database being vacuumed, except that PAGER_CACHESPILL + ** is always set. */ + pgflags = db->aDb[iDb].safety_level | (db->flags & PAGER_FLAGS_MASK); } -#endif + nRes = sqlite3BtreeGetRequestedReserve(pMain); sqlite3BtreeSetCacheSize(pTemp, db->aDb[iDb].pSchema->cache_size); sqlite3BtreeSetSpillSize(pTemp, sqlite3BtreeSetSpillSize(pMain,0)); - sqlite3BtreeSetPagerFlags(pTemp, PAGER_SYNCHRONOUS_OFF|PAGER_CACHESPILL); + sqlite3BtreeSetPagerFlags(pTemp, pgflags|PAGER_CACHESPILL); /* Begin a transaction and take an exclusive lock on the main database ** file. This is done before the sqlite3BtreeGetPageSize(pMain) call below, @@ -130425,12 +152425,14 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ */ rc = execSql(db, pzErrMsg, "BEGIN"); if( rc!=SQLITE_OK ) goto end_of_vacuum; - rc = sqlite3BtreeBeginTrans(pMain, 2); + rc = sqlite3BtreeBeginTrans(pMain, pOut==0 ? 2 : 0, 0); if( rc!=SQLITE_OK ) goto end_of_vacuum; /* Do not attempt to change the page size for a WAL database */ if( sqlite3PagerGetJournalMode(sqlite3BtreePager(pMain)) - ==PAGER_JOURNALMODE_WAL ){ + ==PAGER_JOURNALMODE_WAL + && pOut==0 + ){ db->nextPagesize = 0; } @@ -130452,14 +152454,14 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ */ db->init.iDb = nDb; /* force new CREATE statements into vacuum_db */ rc = execSqlF(db, pzErrMsg, - "SELECT sql FROM \"%w\".sqlite_master" + "SELECT sql FROM \"%w\".sqlite_schema" " WHERE type='table'AND name<>'sqlite_sequence'" " AND coalesce(rootpage,1)>0", zDbMain ); if( rc!=SQLITE_OK ) goto end_of_vacuum; rc = execSqlF(db, pzErrMsg, - "SELECT sql FROM \"%w\".sqlite_master" + "SELECT sql FROM \"%w\".sqlite_schema" " WHERE type='index'", zDbMain ); @@ -130473,7 +152475,7 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ rc = execSqlF(db, pzErrMsg, "SELECT'INSERT INTO vacuum_db.'||quote(name)" "||' SELECT*FROM\"%w\".'||quote(name)" - "FROM vacuum_db.sqlite_master " + "FROM vacuum_db.sqlite_schema " "WHERE type='table'AND coalesce(rootpage,1)>0", zDbMain ); @@ -130484,18 +152486,18 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ /* Copy the triggers, views, and virtual tables from the main database ** over to the temporary database. None of these objects has any ** associated storage, so all we have to do is copy their entries - ** from the SQLITE_MASTER table. + ** from the schema table. */ rc = execSqlF(db, pzErrMsg, - "INSERT INTO vacuum_db.sqlite_master" - " SELECT*FROM \"%w\".sqlite_master" + "INSERT INTO vacuum_db.sqlite_schema" + " SELECT*FROM \"%w\".sqlite_schema" " WHERE type IN('view','trigger')" " OR(type='table'AND rootpage=0)", zDbMain ); if( rc ) goto end_of_vacuum; - /* At this point, there is a write transaction open on both the + /* At this point, there is a write transaction open on both the ** vacuum database and the main database. Assuming no error occurs, ** both transactions are closed by this block - the main database ** transaction by sqlite3BtreeCopyFile() and the other by an explicit @@ -130519,8 +152521,8 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ BTREE_APPLICATION_ID, 0, /* Preserve the application id */ }; - assert( 1==sqlite3BtreeIsInTrans(pTemp) ); - assert( 1==sqlite3BtreeIsInTrans(pMain) ); + assert( SQLITE_TXN_WRITE==sqlite3BtreeTxnState(pTemp) ); + assert( pOut!=0 || SQLITE_TXN_WRITE==sqlite3BtreeTxnState(pMain) ); /* Copy Btree meta values */ for(i=0; iflags */ @@ -130551,7 +152560,7 @@ end_of_vacuum: db->nChange = saved_nChange; db->nTotalChange = saved_nTotalChange; db->mTrace = saved_mTrace; - sqlite3BtreeSetPageSize(pMain, -1, -1, 1); + sqlite3BtreeSetPageSize(pMain, -1, 0, 1); /* Currently there is an SQL level transaction open on the vacuum ** database. No locks are held on any other files (since the main file @@ -130569,7 +152578,7 @@ end_of_vacuum: } /* This both clears the schemas and reduces the size of the db->aDb[] - ** array. */ + ** array. */ sqlite3ResetAllSchemasOfConnection(db); return rc; @@ -130598,7 +152607,7 @@ end_of_vacuum: /* ** Before a virtual table xCreate() or xConnect() method is invoked, the ** sqlite3.pVtabCtx member variable is set to point to an instance of -** this struct allocated on the stack. It is used by the implementation of +** this struct allocated on the stack. It is used by the implementation of ** the sqlite3_declare_vtab() and sqlite3_vtab_config() APIs, both of which ** are invoked only from within xCreate and xConnect methods. */ @@ -130613,6 +152622,9 @@ struct VtabCtx { ** Construct and install a Module object for a virtual table. When this ** routine is called, it is guaranteed that all appropriate locks are held ** and the module is not already part of the connection. +** +** If there already exists a module with zName, replace it with the new one. +** If pModule==0, then delete the module zName if it exists. */ SQLITE_PRIVATE Module *sqlite3VtabCreateModule( sqlite3 *db, /* Database in which module is registered */ @@ -130622,25 +152634,36 @@ SQLITE_PRIVATE Module *sqlite3VtabCreateModule( void (*xDestroy)(void *) /* Module destructor function */ ){ Module *pMod; - int nName = sqlite3Strlen30(zName); - pMod = (Module *)sqlite3Malloc(sizeof(Module) + nName + 1); - if( pMod==0 ){ - sqlite3OomFault(db); + Module *pDel; + char *zCopy; + if( pModule==0 ){ + zCopy = (char*)zName; + pMod = 0; }else{ - Module *pDel; - char *zCopy = (char *)(&pMod[1]); + int nName = sqlite3Strlen30(zName); + pMod = (Module *)sqlite3Malloc(sizeof(Module) + nName + 1); + if( pMod==0 ){ + sqlite3OomFault(db); + return 0; + } + zCopy = (char *)(&pMod[1]); memcpy(zCopy, zName, nName+1); pMod->zName = zCopy; pMod->pModule = pModule; pMod->pAux = pAux; pMod->xDestroy = xDestroy; pMod->pEpoTab = 0; - pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,(void*)pMod); - assert( pDel==0 || pDel==pMod ); - if( pDel ){ + pMod->nRefModule = 1; + } + pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,(void*)pMod); + if( pDel ){ + if( pDel==pMod ){ sqlite3OomFault(db); sqlite3DbFree(db, pDel); pMod = 0; + }else{ + sqlite3VtabEponymousTableClear(db, pDel); + sqlite3VtabModuleUnref(db, pDel); } } return pMod; @@ -130661,11 +152684,7 @@ static int createModule( int rc = SQLITE_OK; sqlite3_mutex_enter(db->mutex); - if( sqlite3HashFind(&db->aModule, zName) ){ - rc = SQLITE_MISUSE_BKPT; - }else{ - (void)sqlite3VtabCreateModule(db, zName, pModule, pAux, xDestroy); - } + (void)sqlite3VtabCreateModule(db, zName, pModule, pAux, xDestroy); rc = sqlite3ApiExit(db, rc); if( rc!=SQLITE_OK && xDestroy ) xDestroy(pAux); sqlite3_mutex_leave(db->mutex); @@ -130704,10 +152723,48 @@ SQLITE_API int sqlite3_create_module_v2( return createModule(db, zName, pModule, pAux, xDestroy); } +/* +** External API to drop all virtual-table modules, except those named +** on the azNames list. +*/ +SQLITE_API int sqlite3_drop_modules(sqlite3 *db, const char** azNames){ + HashElem *pThis, *pNext; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif + for(pThis=sqliteHashFirst(&db->aModule); pThis; pThis=pNext){ + Module *pMod = (Module*)sqliteHashData(pThis); + pNext = sqliteHashNext(pThis); + if( azNames ){ + int ii; + for(ii=0; azNames[ii]!=0 && strcmp(azNames[ii],pMod->zName)!=0; ii++){} + if( azNames[ii]!=0 ) continue; + } + createModule(db, pMod->zName, 0, 0, 0); + } + return SQLITE_OK; +} + +/* +** Decrement the reference count on a Module object. Destroy the +** module when the reference count reaches zero. +*/ +SQLITE_PRIVATE void sqlite3VtabModuleUnref(sqlite3 *db, Module *pMod){ + assert( pMod->nRefModule>0 ); + pMod->nRefModule--; + if( pMod->nRefModule==0 ){ + if( pMod->xDestroy ){ + pMod->xDestroy(pMod->pAux); + } + assert( pMod->pEpoTab==0 ); + sqlite3DbFree(db, pMod); + } +} + /* ** Lock the virtual table so that it cannot be disconnected. ** Locks nest. Every lock should have a corresponding unlock. -** If an unlock is omitted, resources leaks will occur. +** If an unlock is omitted, resources leaks will occur. ** ** If a disconnect is attempted while a virtual table is locked, ** the disconnect is deferred until all locks have been removed. @@ -130719,13 +152776,13 @@ SQLITE_PRIVATE void sqlite3VtabLock(VTable *pVTab){ /* ** pTab is a pointer to a Table structure representing a virtual-table. -** Return a pointer to the VTable object used by connection db to access +** Return a pointer to the VTable object used by connection db to access ** this virtual-table, if one has been created, or NULL otherwise. */ SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3 *db, Table *pTab){ VTable *pVtab; assert( IsVirtual(pTab) ); - for(pVtab=pTab->pVTable; pVtab && pVtab->db!=db; pVtab=pVtab->pNext); + for(pVtab=pTab->u.vtab.p; pVtab && pVtab->db!=db; pVtab=pVtab->pNext); return pVtab; } @@ -130738,7 +152795,8 @@ SQLITE_PRIVATE void sqlite3VtabUnlock(VTable *pVTab){ assert( db ); assert( pVTab->nRef>0 ); - assert( db->magic==SQLITE_MAGIC_OPEN || db->magic==SQLITE_MAGIC_ZOMBIE ); + assert( db->eOpenState==SQLITE_STATE_OPEN + || db->eOpenState==SQLITE_STATE_ZOMBIE ); pVTab->nRef--; if( pVTab->nRef==0 ){ @@ -130746,27 +152804,31 @@ SQLITE_PRIVATE void sqlite3VtabUnlock(VTable *pVTab){ if( p ){ p->pModule->xDisconnect(p); } + sqlite3VtabModuleUnref(pVTab->db, pVTab->pMod); sqlite3DbFree(db, pVTab); } } /* ** Table p is a virtual table. This function moves all elements in the -** p->pVTable list to the sqlite3.pDisconnect lists of their associated -** database connections to be disconnected at the next opportunity. +** p->u.vtab.p list to the sqlite3.pDisconnect lists of their associated +** database connections to be disconnected at the next opportunity. ** Except, if argument db is not NULL, then the entry associated with -** connection db is left in the p->pVTable list. +** connection db is left in the p->u.vtab.p list. */ static VTable *vtabDisconnectAll(sqlite3 *db, Table *p){ VTable *pRet = 0; - VTable *pVTable = p->pVTable; - p->pVTable = 0; + VTable *pVTable; - /* Assert that the mutex (if any) associated with the BtShared database - ** that contains table p is held by the caller. See header comments + assert( IsVirtual(p) ); + pVTable = p->u.vtab.p; + p->u.vtab.p = 0; + + /* Assert that the mutex (if any) associated with the BtShared database + ** that contains table p is held by the caller. See header comments ** above function sqlite3VtabUnlockList() for an explanation of why ** this makes it safe to access the sqlite3.pDisconnect list of any - ** database connection that may have an entry in the p->pVTable list. + ** database connection that may have an entry in the p->u.vtab.p list. */ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, p->pSchema) ); @@ -130776,7 +152838,7 @@ static VTable *vtabDisconnectAll(sqlite3 *db, Table *p){ assert( db2 ); if( db2==db ){ pRet = pVTable; - p->pVTable = pRet; + p->u.vtab.p = pRet; pRet->pNext = 0; }else{ pVTable->pNext = db2->pDisconnect; @@ -130804,7 +152866,7 @@ SQLITE_PRIVATE void sqlite3VtabDisconnect(sqlite3 *db, Table *p){ assert( sqlite3BtreeHoldsAllMutexes(db) ); assert( sqlite3_mutex_held(db->mutex) ); - for(ppVTab=&p->pVTable; *ppVTab; ppVTab=&(*ppVTab)->pNext){ + for(ppVTab=&p->u.vtab.p; *ppVTab; ppVTab=&(*ppVTab)->pNext){ if( (*ppVTab)->db==db ){ VTable *pVTab = *ppVTab; *ppVTab = pVTab->pNext; @@ -130819,7 +152881,7 @@ SQLITE_PRIVATE void sqlite3VtabDisconnect(sqlite3 *db, Table *p){ ** Disconnect all the virtual table objects in the sqlite3.pDisconnect list. ** ** This function may only be called when the mutexes associated with all -** shared b-tree databases opened using connection db are held by the +** shared b-tree databases opened using connection db are held by the ** caller. This is done to protect the sqlite3.pDisconnect list. The ** sqlite3.pDisconnect list is accessed only as follows: ** @@ -130832,18 +152894,18 @@ SQLITE_PRIVATE void sqlite3VtabDisconnect(sqlite3 *db, Table *p){ ** or, if the virtual table is stored in a non-sharable database, then ** the database handle mutex is held. ** -** As a result, a sqlite3.pDisconnect cannot be accessed simultaneously +** As a result, a sqlite3.pDisconnect cannot be accessed simultaneously ** by multiple threads. It is thread-safe. */ SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3 *db){ VTable *p = db->pDisconnect; - db->pDisconnect = 0; assert( sqlite3BtreeHoldsAllMutexes(db) ); assert( sqlite3_mutex_held(db->mutex) ); if( p ){ - sqlite3ExpirePreparedStatements(db); + db->pDisconnect = 0; + sqlite3ExpirePreparedStatements(db, 0); do { VTable *pNext = p->pNext; sqlite3VtabUnlock(p); @@ -130858,42 +152920,51 @@ SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3 *db){ ** record. ** ** Since it is a virtual-table, the Table structure contains a pointer -** to the head of a linked list of VTable structures. Each VTable +** to the head of a linked list of VTable structures. Each VTable ** structure is associated with a single sqlite3* user of the schema. -** The reference count of the VTable structure associated with database -** connection db is decremented immediately (which may lead to the +** The reference count of the VTable structure associated with database +** connection db is decremented immediately (which may lead to the ** structure being xDisconnected and free). Any other VTable structures -** in the list are moved to the sqlite3.pDisconnect list of the associated +** in the list are moved to the sqlite3.pDisconnect list of the associated ** database connection. */ SQLITE_PRIVATE void sqlite3VtabClear(sqlite3 *db, Table *p){ - if( !db || db->pnBytesFreed==0 ) vtabDisconnectAll(0, p); - if( p->azModuleArg ){ + assert( IsVirtual(p) ); + assert( db!=0 ); + if( db->pnBytesFreed==0 ) vtabDisconnectAll(0, p); + if( p->u.vtab.azArg ){ int i; - for(i=0; inModuleArg; i++){ - if( i!=1 ) sqlite3DbFree(db, p->azModuleArg[i]); + for(i=0; iu.vtab.nArg; i++){ + if( i!=1 ) sqlite3DbFree(db, p->u.vtab.azArg[i]); } - sqlite3DbFree(db, p->azModuleArg); + sqlite3DbFree(db, p->u.vtab.azArg); } } /* -** Add a new module argument to pTable->azModuleArg[]. +** Add a new module argument to pTable->u.vtab.azArg[]. ** The string is not copied - the pointer is stored. The ** string will be freed automatically when the table is ** deleted. */ -static void addModuleArgument(sqlite3 *db, Table *pTable, char *zArg){ - int nBytes = sizeof(char *)*(2+pTable->nModuleArg); +static void addModuleArgument(Parse *pParse, Table *pTable, char *zArg){ + sqlite3_int64 nBytes; char **azModuleArg; - azModuleArg = sqlite3DbRealloc(db, pTable->azModuleArg, nBytes); + sqlite3 *db = pParse->db; + + assert( IsVirtual(pTable) ); + nBytes = sizeof(char *)*(2+pTable->u.vtab.nArg); + if( pTable->u.vtab.nArg+3>=db->aLimit[SQLITE_LIMIT_COLUMN] ){ + sqlite3ErrorMsg(pParse, "too many columns on %s", pTable->zName); + } + azModuleArg = sqlite3DbRealloc(db, pTable->u.vtab.azArg, nBytes); if( azModuleArg==0 ){ sqlite3DbFree(db, zArg); }else{ - int i = pTable->nModuleArg++; + int i = pTable->u.vtab.nArg++; azModuleArg[i] = zArg; azModuleArg[i+1] = 0; - pTable->azModuleArg = azModuleArg; + pTable->u.vtab.azArg = azModuleArg; } } @@ -130909,7 +152980,6 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse( Token *pModuleName, /* Name of the module for the virtual table */ int ifNotExists /* No error if the table already exists */ ){ - int iDb; /* The database the table is being created in */ Table *pTable; /* The new virtual table */ sqlite3 *db; /* Database connection */ @@ -130917,15 +152987,14 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse( pTable = pParse->pNewTable; if( pTable==0 ) return; assert( 0==pTable->pIndex ); + pTable->eTabType = TABTYP_VTAB; db = pParse->db; - iDb = sqlite3SchemaToIndex(db, pTable->pSchema); - assert( iDb>=0 ); - assert( pTable->nModuleArg==0 ); - addModuleArgument(db, pTable, sqlite3NameFromToken(db, pModuleName)); - addModuleArgument(db, pTable, 0); - addModuleArgument(db, pTable, sqlite3DbStrDup(db, pTable->zName)); + assert( pTable->u.vtab.nArg==0 ); + addModuleArgument(pParse, pTable, sqlite3NameFromToken(db, pModuleName)); + addModuleArgument(pParse, pTable, 0); + addModuleArgument(pParse, pTable, sqlite3DbStrDup(db, pTable->zName)); assert( (pParse->sNameToken.z==pName2->z && pName2->z!=0) || (pParse->sNameToken.z==pName1->z && pName2->z==0) ); @@ -130936,12 +153005,14 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse( #ifndef SQLITE_OMIT_AUTHORIZATION /* Creating a virtual table invokes the authorization callback twice. ** The first invocation, to obtain permission to INSERT a row into the - ** sqlite_master table, has already been made by sqlite3StartTable(). + ** sqlite_schema table, has already been made by sqlite3StartTable(). ** The second call, to obtain permission to create the table, is made now. */ - if( pTable->azModuleArg ){ - sqlite3AuthCheck(pParse, SQLITE_CREATE_VTABLE, pTable->zName, - pTable->azModuleArg[0], pParse->db->aDb[iDb].zDbSName); + if( pTable->u.vtab.azArg ){ + int iDb = sqlite3SchemaToIndex(db, pTable->pSchema); + assert( iDb>=0 ); /* The database the table is being created in */ + sqlite3AuthCheck(pParse, SQLITE_CREATE_VTABLE, pTable->zName, + pTable->u.vtab.azArg[0], pParse->db->aDb[iDb].zDbSName); } #endif } @@ -130956,7 +153027,7 @@ static void addArgumentToVtab(Parse *pParse){ const char *z = (const char*)pParse->sArg.z; int n = pParse->sArg.n; sqlite3 *db = pParse->db; - addModuleArgument(db, pParse->pNewTable, sqlite3DbStrNDup(db, z, n)); + addModuleArgument(pParse, pParse->pNewTable, sqlite3DbStrNDup(db, z, n)); } } @@ -130969,15 +153040,16 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ sqlite3 *db = pParse->db; /* The database connection */ if( pTab==0 ) return; + assert( IsVirtual(pTab) ); addArgumentToVtab(pParse); pParse->sArg.z = 0; - if( pTab->nModuleArg<1 ) return; - + if( pTab->u.vtab.nArg<1 ) return; + /* If the CREATE VIRTUAL TABLE statement is being entered for the ** first time (in other words if the virtual table is actually being - ** created now instead of just being read out of sqlite_master) then + ** created now instead of just being read out of sqlite_schema) then ** do additional initialization work and store the statement text - ** in the sqlite_master table. + ** in the sqlite_schema table. */ if( !db->init.busy ){ char *zStmt; @@ -130986,54 +153058,52 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ int iReg; Vdbe *v; + sqlite3MayAbort(pParse); + /* Compute the complete text of the CREATE VIRTUAL TABLE statement */ if( pEnd ){ pParse->sNameToken.n = (int)(pEnd->z - pParse->sNameToken.z) + pEnd->n; } zStmt = sqlite3MPrintf(db, "CREATE VIRTUAL TABLE %T", &pParse->sNameToken); - /* A slot for the record has already been allocated in the - ** SQLITE_MASTER table. We just need to update that slot with all - ** the information we've collected. + /* A slot for the record has already been allocated in the + ** schema table. We just need to update that slot with all + ** the information we've collected. ** ** The VM register number pParse->regRowid holds the rowid of an - ** entry in the sqlite_master table tht was created for this vtab + ** entry in the sqlite_schema table that was created for this vtab ** by sqlite3StartTable(). */ iDb = sqlite3SchemaToIndex(db, pTab->pSchema); sqlite3NestedParse(pParse, - "UPDATE %Q.%s " + "UPDATE %Q." LEGACY_SCHEMA_TABLE " " "SET type='table', name=%Q, tbl_name=%Q, rootpage=0, sql=%Q " "WHERE rowid=#%d", - db->aDb[iDb].zDbSName, MASTER_NAME, + db->aDb[iDb].zDbSName, pTab->zName, pTab->zName, zStmt, pParse->regRowid ); - sqlite3DbFree(db, zStmt); v = sqlite3GetVdbe(pParse); sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddOp0(v, OP_Expire); - zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName); - sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere); + zWhere = sqlite3MPrintf(db, "name=%Q AND sql=%Q", pTab->zName, zStmt); + sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere, 0); + sqlite3DbFree(db, zStmt); iReg = ++pParse->nMem; sqlite3VdbeLoadString(v, iReg, pTab->zName); sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg); - } - - /* If we are rereading the sqlite_master table create the in-memory - ** record of the table. The xConnect() method is not called until - ** the first time the virtual table is used in an SQL statement. This - ** allows a schema that contains virtual tables to be loaded before - ** the required virtual table implementations are registered. */ - else { + }else{ + /* If we are rereading the sqlite_schema table create the in-memory + ** record of the table. */ Table *pOld; Schema *pSchema = pTab->pSchema; const char *zName = pTab->zName; - assert( sqlite3SchemaMutexHeld(db, 0, pSchema) ); + assert( zName!=0 ); + sqlite3MarkAllShadowTablesOf(db, pTab); pOld = sqlite3HashInsert(&pSchema->tblHash, zName, pTab); if( pOld ){ sqlite3OomFault(db); @@ -131075,7 +153145,7 @@ SQLITE_PRIVATE void sqlite3VtabArgExtend(Parse *pParse, Token *p){ ** to this procedure. */ static int vtabCallConstructor( - sqlite3 *db, + sqlite3 *db, Table *pTab, Module *pMod, int (*xConstruct)(sqlite3*,void*,int,const char*const*,sqlite3_vtab**,char**), @@ -131084,17 +153154,20 @@ static int vtabCallConstructor( VtabCtx sCtx; VTable *pVTable; int rc; - const char *const*azArg = (const char *const*)pTab->azModuleArg; - int nArg = pTab->nModuleArg; + const char *const*azArg; + int nArg = pTab->u.vtab.nArg; char *zErr = 0; char *zModuleName; int iDb; VtabCtx *pCtx; + assert( IsVirtual(pTab) ); + azArg = (const char *const*)pTab->u.vtab.azArg; + /* Check that the virtual-table is not already being initialized */ for(pCtx=db->pVtabCtx; pCtx; pCtx=pCtx->pPrior){ if( pCtx->pTab==pTab ){ - *pzErr = sqlite3MPrintf(db, + *pzErr = sqlite3MPrintf(db, "vtable constructor called recursively: %s", pTab->zName ); return SQLITE_LOCKED; @@ -131114,9 +153187,10 @@ static int vtabCallConstructor( } pVTable->db = db; pVTable->pMod = pMod; + pVTable->eVtabRisk = SQLITE_VTABRISK_Normal; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - pTab->azModuleArg[1] = db->aDb[iDb].zDbSName; + pTab->u.vtab.azArg[1] = db->aDb[iDb].zDbSName; /* Invoke the virtual table constructor */ assert( &db->pVtabCtx ); @@ -131126,7 +153200,9 @@ static int vtabCallConstructor( sCtx.pPrior = db->pVtabCtx; sCtx.bDeclared = 0; db->pVtabCtx = &sCtx; + pTab->nTabRef++; rc = xConstruct(db, pMod->pAux, nArg, azArg, &pVTable->pVtab, &zErr); + sqlite3DeleteTable(db, pTab); db->pVtabCtx = sCtx.pPrior; if( rc==SQLITE_NOMEM ) sqlite3OomFault(db); assert( sCtx.pTab==pTab ); @@ -131144,6 +153220,7 @@ static int vtabCallConstructor( ** the sqlite3_vtab object if successful. */ memset(pVTable->pVtab, 0, sizeof(pVTable->pVtab[0])); pVTable->pVtab->pModule = pMod->pModule; + pMod->nRefModule++; pVTable->nRef = 1; if( sCtx.bDeclared==0 ){ const char *zFormat = "vtable constructor did not declare schema: %s"; @@ -131152,14 +153229,14 @@ static int vtabCallConstructor( rc = SQLITE_ERROR; }else{ int iCol; - u8 oooHidden = 0; + u16 oooHidden = 0; /* If everything went according to plan, link the new VTable structure - ** into the linked list headed by pTab->pVTable. Then loop through the + ** into the linked list headed by pTab->u.vtab.p. Then loop through the ** columns of the table to see if any of them contain the token "hidden". ** If so, set the Column COLFLAG_HIDDEN flag and remove the token from ** the type string. */ - pVTable->pNext = pTab->pVTable; - pTab->pVTable = pVTable; + pVTable->pNext = pTab->u.vtab.p; + pTab->u.vtab.p = pVTable; for(iCol=0; iColnCol; iCol++){ char *zType = sqlite3ColumnType(&pTab->aCol[iCol], ""); @@ -131185,6 +153262,7 @@ static int vtabCallConstructor( zType[i-1] = '\0'; } pTab->aCol[iCol].colFlags |= COLFLAG_HIDDEN; + pTab->tabFlags |= TF_HasHidden; oooHidden = TF_OOOHidden; }else{ pTab->tabFlags |= oooHidden; @@ -131199,7 +153277,7 @@ static int vtabCallConstructor( /* ** This function is invoked by the parser to call the xConnect() method -** of the virtual table pTab. If an error occurs, an error code is returned +** of the virtual table pTab. If an error occurs, an error code is returned ** and an error left in pParse. ** ** This call is a no-op if table pTab is not a virtual table. @@ -131211,16 +153289,17 @@ SQLITE_PRIVATE int sqlite3VtabCallConnect(Parse *pParse, Table *pTab){ int rc; assert( pTab ); - if( !IsVirtual(pTab) || sqlite3GetVTable(db, pTab) ){ + assert( IsVirtual(pTab) ); + if( sqlite3GetVTable(db, pTab) ){ return SQLITE_OK; } /* Locate the required virtual table module */ - zMod = pTab->azModuleArg[0]; + zMod = pTab->u.vtab.azArg[0]; pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); if( !pMod ){ - const char *zModule = pTab->azModuleArg[0]; + const char *zModule = pTab->u.vtab.azArg[0]; sqlite3ErrorMsg(pParse, "no such module: %s", zModule); rc = SQLITE_ERROR; }else{ @@ -131245,7 +153324,8 @@ static int growVTrans(sqlite3 *db){ /* Grow the sqlite3.aVTrans array if required */ if( (db->nVTrans%ARRAY_INCR)==0 ){ VTable **aVTrans; - int nBytes = sizeof(sqlite3_vtab *) * (db->nVTrans + ARRAY_INCR); + sqlite3_int64 nBytes = sizeof(sqlite3_vtab*)* + ((sqlite3_int64)db->nVTrans + ARRAY_INCR); aVTrans = sqlite3DbRealloc(db, (void *)db->aVTrans, nBytes); if( !aVTrans ){ return SQLITE_NOMEM_BKPT; @@ -131269,7 +153349,7 @@ static void addToVTrans(sqlite3 *db, VTable *pVTab){ /* ** This function is invoked by the vdbe to call the xCreate method -** of the virtual table named zTab in database iDb. +** of the virtual table named zTab in database iDb. ** ** If an error occurs, *pzErr is set to point to an English language ** description of the error and an SQLITE_XXX error code is returned. @@ -131282,14 +153362,14 @@ SQLITE_PRIVATE int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, const char *zMod; pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); - assert( pTab && IsVirtual(pTab) && !pTab->pVTable ); + assert( pTab && IsVirtual(pTab) && !pTab->u.vtab.p ); /* Locate the required virtual table module */ - zMod = pTab->azModuleArg[0]; + zMod = pTab->u.vtab.azArg[0]; pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); - /* If the module has been registered and includes a Create method, - ** invoke it now. If the module has not been registered, return an + /* If the module has been registered and includes a Create method, + ** invoke it now. If the module has not been registered, return an ** error. Otherwise, do nothing. */ if( pMod==0 || pMod->pModule->xCreate==0 || pMod->pModule->xDestroy==0 ){ @@ -131320,8 +153400,8 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ VtabCtx *pCtx; int rc = SQLITE_OK; Table *pTab; - char *zErr = 0; Parse sParse; + int initBusy; #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) || zCreateTable==0 ){ @@ -131338,21 +153418,28 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ pTab = pCtx->pTab; assert( IsVirtual(pTab) ); - memset(&sParse, 0, sizeof(sParse)); - sParse.declareVtab = 1; - sParse.db = db; + sqlite3ParseObjectInit(&sParse, db); + sParse.eParseMode = PARSE_MODE_DECLARE_VTAB; + sParse.disableTriggers = 1; + /* We should never be able to reach this point while loading the + ** schema. Nevertheless, defend against that (turn off db->init.busy) + ** in case a bug arises. */ + assert( db->init.busy==0 ); + initBusy = db->init.busy; + db->init.busy = 0; sParse.nQueryLoop = 1; - if( SQLITE_OK==sqlite3RunParser(&sParse, zCreateTable, &zErr) - && sParse.pNewTable - && !db->mallocFailed - && !sParse.pNewTable->pSelect - && !IsVirtual(sParse.pNewTable) + if( SQLITE_OK==sqlite3RunParser(&sParse, zCreateTable) + && ALWAYS(sParse.pNewTable!=0) + && ALWAYS(!db->mallocFailed) + && IsOrdinaryTable(sParse.pNewTable) ){ + assert( sParse.zErrMsg==0 ); if( !pTab->aCol ){ Table *pNew = sParse.pNewTable; Index *pIdx; pTab->aCol = pNew->aCol; - pTab->nCol = pNew->nCol; + sqlite3ExprListDelete(db, pNew->u.tab.pDfltList); + pTab->nNVCol = pTab->nCol = pNew->nCol; pTab->tabFlags |= pNew->tabFlags & (TF_WithoutRowid|TF_NoVisibleRowid); pNew->nCol = 0; pNew->aCol = 0; @@ -131376,17 +153463,19 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ } pCtx->bDeclared = 1; }else{ - sqlite3ErrorWithMsg(db, SQLITE_ERROR, (zErr ? "%s" : 0), zErr); - sqlite3DbFree(db, zErr); + sqlite3ErrorWithMsg(db, SQLITE_ERROR, + (sParse.zErrMsg ? "%s" : 0), sParse.zErrMsg); + sqlite3DbFree(db, sParse.zErrMsg); rc = SQLITE_ERROR; } - sParse.declareVtab = 0; + sParse.eParseMode = PARSE_MODE_NORMAL; if( sParse.pVdbe ){ sqlite3VdbeFinalize(sParse.pVdbe); } sqlite3DeleteTable(db, sParse.pNewTable); - sqlite3ParserReset(&sParse); + sqlite3ParseObjectReset(&sParse); + db->init.busy = initBusy; assert( (rc&0xff)==rc ); rc = sqlite3ApiExit(db, rc); @@ -131406,10 +153495,13 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab Table *pTab; pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); - if( pTab!=0 && ALWAYS(pTab->pVTable!=0) ){ + if( ALWAYS(pTab!=0) + && ALWAYS(IsVirtual(pTab)) + && ALWAYS(pTab->u.vtab.p!=0) + ){ VTable *p; int (*xDestroy)(sqlite3_vtab *); - for(p=pTab->pVTable; p; p=p->pNext){ + for(p=pTab->u.vtab.p; p; p=p->pNext){ assert( p->pVtab ); if( p->pVtab->nRef>0 ){ return SQLITE_LOCKED; @@ -131417,15 +153509,18 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab } p = vtabDisconnectAll(db, pTab); xDestroy = p->pMod->pModule->xDestroy; - assert( xDestroy!=0 ); /* Checked before the virtual table is created */ + if( xDestroy==0 ) xDestroy = p->pMod->pModule->xDisconnect; + assert( xDestroy!=0 ); + pTab->nTabRef++; rc = xDestroy(p->pVtab); /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */ if( rc==SQLITE_OK ){ - assert( pTab->pVTable==p && p->pNext==0 ); + assert( pTab->u.vtab.p==p && p->pNext==0 ); p->pVtab = 0; - pTab->pVTable = 0; + pTab->u.vtab.p = 0; sqlite3VtabUnlock(p); } + sqlite3DeleteTable(db, pTab); } return rc; @@ -131437,7 +153532,7 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab ** called is identified by the second argument, "offset", which is ** the offset of the method to call in the sqlite3_module structure. ** -** The array is cleared after invoking the callbacks. +** The array is cleared after invoking the callbacks. */ static void callFinaliser(sqlite3 *db, int offset){ int i; @@ -131486,7 +153581,7 @@ SQLITE_PRIVATE int sqlite3VtabSync(sqlite3 *db, Vdbe *p){ } /* -** Invoke the xRollback method of all virtual tables in the +** Invoke the xRollback method of all virtual tables in the ** sqlite3.aVTrans array. Then clear the array itself. */ SQLITE_PRIVATE int sqlite3VtabRollback(sqlite3 *db){ @@ -131495,7 +153590,7 @@ SQLITE_PRIVATE int sqlite3VtabRollback(sqlite3 *db){ } /* -** Invoke the xCommit method of all virtual tables in the +** Invoke the xCommit method of all virtual tables in the ** sqlite3.aVTrans array. Then clear the array itself. */ SQLITE_PRIVATE int sqlite3VtabCommit(sqlite3 *db){ @@ -131517,7 +153612,7 @@ SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *db, VTable *pVTab){ /* Special case: If db->aVTrans is NULL and db->nVTrans is greater ** than zero, then this function is being called from within a - ** virtual module xSync() callback. It is illegal to write to + ** virtual module xSync() callback. It is illegal to write to ** virtual module tables in this case, so return SQLITE_LOCKED. */ if( sqlite3VtabInSync(db) ){ @@ -131525,7 +153620,7 @@ SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *db, VTable *pVTab){ } if( !pVTab ){ return SQLITE_OK; - } + } pModule = pVTab->pVtab->pModule; if( pModule->xBegin ){ @@ -131538,7 +153633,7 @@ SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *db, VTable *pVTab){ } } - /* Invoke the xBegin method. If successful, add the vtab to the + /* Invoke the xBegin method. If successful, add the vtab to the ** sqlite3.aVTrans[] array. */ rc = growVTrans(db); if( rc==SQLITE_OK ){ @@ -131562,11 +153657,11 @@ SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *db, VTable *pVTab){ ** as the second argument to the virtual table method invoked. ** ** If op is SAVEPOINT_BEGIN, the xSavepoint method is invoked. If it is -** SAVEPOINT_ROLLBACK, the xRollbackTo method. Otherwise, if op is +** SAVEPOINT_ROLLBACK, the xRollbackTo method. Otherwise, if op is ** SAVEPOINT_RELEASE, then the xRelease method of each virtual table with ** an open transaction is invoked. ** -** If any virtual table method returns an error code other than SQLITE_OK, +** If any virtual table method returns an error code other than SQLITE_OK, ** processing is abandoned and the error returned to the caller of this ** function immediately. If all calls to virtual table methods are successful, ** SQLITE_OK is returned. @@ -131583,6 +153678,7 @@ SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){ const sqlite3_module *pMod = pVTab->pMod->pModule; if( pVTab->pVtab && pMod->iVersion>=2 ){ int (*xMethod)(sqlite3_vtab *, int); + sqlite3VtabLock(pVTab); switch( op ){ case SAVEPOINT_BEGIN: xMethod = pMod->xSavepoint; @@ -131596,8 +153692,12 @@ SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){ break; } if( xMethod && pVTab->iSavepoint>iSavepoint ){ + u64 savedFlags = (db->flags & SQLITE_Defensive); + db->flags &= ~(u64)SQLITE_Defensive; rc = xMethod(pVTab->pVtab, iSavepoint); + db->flags |= savedFlags; } + sqlite3VtabUnlock(pVTab); } } } @@ -131613,7 +153713,7 @@ SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){ ** This routine is used to allow virtual table implementations to ** overload MATCH, LIKE, GLOB, and REGEXP operators. ** -** Return either the pDef argument (indicating no change) or a +** Return either the pDef argument (indicating no change) or a ** new FuncDef structure that is marked as ephemeral using the ** SQLITE_FUNC_EPHEM flag. */ @@ -131634,15 +153734,16 @@ SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction( /* Check to see the left operand is a column in a virtual table */ if( NEVER(pExpr==0) ) return pDef; if( pExpr->op!=TK_COLUMN ) return pDef; - pTab = pExpr->pTab; - if( pTab==0 ) return pDef; + assert( ExprUseYTab(pExpr) ); + pTab = pExpr->y.pTab; + if( NEVER(pTab==0) ) return pDef; if( !IsVirtual(pTab) ) return pDef; pVtab = sqlite3GetVTable(db, pTab)->pVtab; assert( pVtab!=0 ); assert( pVtab->pModule!=0 ); pMod = (sqlite3_module *)pVtab->pModule; if( pMod->xFindFunction==0 ) return pDef; - + /* Call the xFindFunction method on the virtual table implementation ** to see if the implementation wants to overload this function. ** @@ -131696,7 +153797,7 @@ SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse *pParse, Table *pTab){ if( pTab==pToplevel->apVtabLock[i] ) return; } n = (pToplevel->nVtabLock+1)*sizeof(pToplevel->apVtabLock[0]); - apVtabLock = sqlite3_realloc64(pToplevel->apVtabLock, n); + apVtabLock = sqlite3Realloc(pToplevel->apVtabLock, n); if( apVtabLock ){ pToplevel->apVtabLock = apVtabLock; pToplevel->apVtabLock[pToplevel->nVtabLock++] = pTab; @@ -131708,12 +153809,13 @@ SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse *pParse, Table *pTab){ /* ** Check to see if virtual table module pMod can be have an eponymous ** virtual table instance. If it can, create one if one does not already -** exist. Return non-zero if the eponymous virtual table instance exists -** when this routine returns, and return zero if it does not exist. +** exist. Return non-zero if either the eponymous virtual table instance +** exists when this routine returns or if an attempt to create it failed +** and an error message was left in pParse. ** ** An eponymous virtual table instance is one that is named after its ** module, and more importantly, does not require a CREATE VIRTUAL TABLE -** statement in order to come into existance. Eponymous virtual table +** statement in order to come into existence. Eponymous virtual table ** instances always exist. They cannot be DROP-ed. ** ** Any virtual table module for which xConnect and xCreate are the same @@ -131736,18 +153838,19 @@ SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse *pParse, Module *pMod){ } pMod->pEpoTab = pTab; pTab->nTabRef = 1; + pTab->eTabType = TABTYP_VTAB; pTab->pSchema = db->aDb[0].pSchema; - assert( pTab->nModuleArg==0 ); + assert( pTab->u.vtab.nArg==0 ); pTab->iPKey = -1; - addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); - addModuleArgument(db, pTab, 0); - addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); + pTab->tabFlags |= TF_Eponymous; + addModuleArgument(pParse, pTab, sqlite3DbStrDup(db, pTab->zName)); + addModuleArgument(pParse, pTab, 0); + addModuleArgument(pParse, pTab, sqlite3DbStrDup(db, pTab->zName)); rc = vtabCallConstructor(db, pTab, pMod, pModule->xConnect, &zErr); if( rc ){ sqlite3ErrorMsg(pParse, "%s", zErr); sqlite3DbFree(db, zErr); sqlite3VtabEponymousTableClear(db, pMod); - return 0; } return 1; } @@ -131760,7 +153863,7 @@ SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3 *db, Module *pMod){ Table *pTab = pMod->pEpoTab; if( pTab!=0 ){ /* Mark the table as Ephemeral prior to deleting it, so that the - ** sqlite3DeleteTable() routine will know that it is not stored in + ** sqlite3DeleteTable() routine will know that it is not stored in ** the schema. */ pTab->tabFlags |= TF_Ephemeral; sqlite3DeleteTable(db, pTab); @@ -131776,8 +153879,8 @@ SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3 *db, Module *pMod){ ** within an xUpdate method. */ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){ - static const unsigned char aMap[] = { - SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE + static const unsigned char aMap[] = { + SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE }; #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; @@ -131789,35 +153892,49 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){ } /* -** Call from within the xCreate() or xConnect() methods to provide +** Call from within the xCreate() or xConnect() methods to provide ** the SQLite core with additional information about the behavior ** of the virtual table being implemented. */ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ va_list ap; int rc = SQLITE_OK; + VtabCtx *p; #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; #endif sqlite3_mutex_enter(db->mutex); - va_start(ap, op); - switch( op ){ - case SQLITE_VTAB_CONSTRAINT_SUPPORT: { - VtabCtx *p = db->pVtabCtx; - if( !p ){ - rc = SQLITE_MISUSE_BKPT; - }else{ - assert( p->pTab==0 || IsVirtual(p->pTab) ); + p = db->pVtabCtx; + if( !p ){ + rc = SQLITE_MISUSE_BKPT; + }else{ + assert( p->pTab==0 || IsVirtual(p->pTab) ); + va_start(ap, op); + switch( op ){ + case SQLITE_VTAB_CONSTRAINT_SUPPORT: { p->pVTable->bConstraint = (u8)va_arg(ap, int); + break; + } + case SQLITE_VTAB_INNOCUOUS: { + p->pVTable->eVtabRisk = SQLITE_VTABRISK_Low; + break; + } + case SQLITE_VTAB_DIRECTONLY: { + p->pVTable->eVtabRisk = SQLITE_VTABRISK_High; + break; + } + case SQLITE_VTAB_USES_ALL_SCHEMAS: { + p->pVTable->bAllSchemas = 1; + break; + } + default: { + rc = SQLITE_MISUSE_BKPT; + break; } - break; } - default: - rc = SQLITE_MISUSE_BKPT; - break; + va_end(ap); } - va_end(ap); if( rc!=SQLITE_OK ) sqlite3Error(db, rc); sqlite3_mutex_leave(db->mutex); @@ -131866,20 +153983,9 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ ** planner logic in "where.c". These definitions are broken out into ** a separate source file for easier editing. */ +#ifndef SQLITE_WHEREINT_H +#define SQLITE_WHEREINT_H -/* -** Trace output macros -*/ -#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) -/***/ extern int sqlite3WhereTrace; -#endif -#if defined(SQLITE_DEBUG) \ - && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_WHERETRACE)) -# define WHERETRACE(K,X) if(sqlite3WhereTrace&(K)) sqlite3DebugPrintf X -# define WHERETRACE_ENABLED 1 -#else -# define WHERETRACE(K,X) -#endif /* Forward references */ @@ -131895,6 +154001,28 @@ typedef struct WhereLoopBuilder WhereLoopBuilder; typedef struct WhereScan WhereScan; typedef struct WhereOrCost WhereOrCost; typedef struct WhereOrSet WhereOrSet; +typedef struct WhereMemBlock WhereMemBlock; +typedef struct WhereRightJoin WhereRightJoin; + +/* +** This object is a header on a block of allocated memory that will be +** automatically freed when its WInfo object is destructed. +*/ +struct WhereMemBlock { + WhereMemBlock *pNext; /* Next block in the chain */ + u64 sz; /* Bytes of space */ +}; + +/* +** Extra information attached to a WhereLevel that is a RIGHT JOIN. +*/ +struct WhereRightJoin { + int iMatch; /* Cursor used to determine prior matched rows */ + int regBloom; /* Bloom filter for iRJMatch */ + int regReturn; /* Return register for the interior subroutine */ + int addrSubrtn; /* Starting address for the interior subroutine */ + int endSubrtn; /* The last opcode in the interior subroutine */ +}; /* ** This object contains information needed to implement a single nested @@ -131921,23 +154049,29 @@ struct WhereLevel { int addrCont; /* Jump here to continue with the next loop cycle */ int addrFirst; /* First instruction of interior of the loop */ int addrBody; /* Beginning of the body of this loop */ + int regBignull; /* big-null flag reg. True if a NULL-scan is needed */ + int addrBignull; /* Jump here for next part of big-null scan */ #ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS u32 iLikeRepCntr; /* LIKE range processing counter register (times 2) */ int addrLikeRep; /* LIKE range processing address */ #endif + int regFilter; /* Bloom filter */ + WhereRightJoin *pRJ; /* Extra information for RIGHT JOIN */ u8 iFrom; /* Which entry in the FROM clause */ u8 op, p3, p5; /* Opcode, P3 & P5 of the opcode that ends the loop */ - int p1, p2; /* Operands of the opcode used to ends the loop */ + int p1, p2; /* Operands of the opcode used to end the loop */ union { /* Information that depends on pWLoop->wsFlags */ struct { int nIn; /* Number of entries in aInLoop[] */ struct InLoop { int iCur; /* The VDBE cursor used by this IN operator */ int addrInTop; /* Top of the IN loop */ + int iBase; /* Base register of multi-key index record */ + int nPrefix; /* Number of prior entries in the key */ u8 eEndLoopOp; /* IN Loop terminator. OP_Next or OP_Prev */ } *aInLoop; /* Information about each nested IN operator */ } in; /* Used when pWLoop->wsFlags&WHERE_IN_ABLE */ - Index *pCovidx; /* Possible covering index for WHERE_MULTI_OR */ + Index *pCoveringIdx; /* Possible covering index for WHERE_MULTI_OR */ } u; struct WhereLoop *pWLoop; /* The selected WhereLoop object */ Bitmask notReady; /* FROM entries not usable at this level */ @@ -131976,15 +154110,17 @@ struct WhereLoop { u16 nEq; /* Number of equality constraints */ u16 nBtm; /* Size of BTM vector */ u16 nTop; /* Size of TOP vector */ - u16 nIdxCol; /* Index column used for ORDER BY */ + u16 nDistinctCol; /* Index columns used to sort for DISTINCT */ Index *pIndex; /* Index used, or NULL */ } btree; struct { /* Information for virtual tables */ int idxNum; /* Index number */ - u8 needFree; /* True if sqlite3_free(idxStr) is needed */ + u32 needFree : 1; /* True if sqlite3_free(idxStr) is needed */ + u32 bOmitOffset : 1; /* True to let virtual table handle offset */ i8 isOrdered; /* True if satisfies ORDER BY */ u16 omitMask; /* Terms that may be omitted */ char *idxStr; /* Index identifier string */ + u32 mHandleIn; /* Terms to handle as IN(...) instead of == */ } vtab; } u; u32 wsFlags; /* WHERE_* flags describing the plan */ @@ -132000,7 +154136,7 @@ struct WhereLoop { /* This object holds the prerequisites and the cost of running a ** subquery on one operand of an OR operator in the WHERE clause. -** See WhereOrSet for additional information +** See WhereOrSet for additional information */ struct WhereOrCost { Bitmask prereq; /* Prerequisites */ @@ -132052,7 +154188,7 @@ struct WherePath { ** clause subexpression is separated from the others by AND operators, ** usually, or sometimes subexpressions separated by OR. ** -** All WhereTerms are collected into a single WhereClause structure. +** All WhereTerms are collected into a single WhereClause structure. ** The following identity holds: ** ** WhereTerm.pWC->a[WhereTerm.idx] == WhereTerm @@ -132107,9 +154243,11 @@ struct WhereTerm { u8 eMatchOp; /* Op for vtab MATCH/LIKE/GLOB/REGEXP terms */ int iParent; /* Disable pWC->a[iParent] when this term disabled */ int leftCursor; /* Cursor number of X in "X " */ - int iField; /* Field in (?,?,?) IN (SELECT...) vector */ union { - int leftColumn; /* Column number of X in "X " */ + struct { + int leftColumn; /* Column number of X in "X " */ + int iField; /* Field in (?,?,?) IN (SELECT...) vector */ + } x; /* Opcode other than OP_OR or OP_AND */ WhereOrInfo *pOrInfo; /* Extra information if (eOperator & WO_OR)!=0 */ WhereAndInfo *pAndInfo; /* Extra information if (eOperator& WO_AND)!=0 */ } u; @@ -132120,23 +154258,26 @@ struct WhereTerm { /* ** Allowed values of WhereTerm.wtFlags */ -#define TERM_DYNAMIC 0x01 /* Need to call sqlite3ExprDelete(db, pExpr) */ -#define TERM_VIRTUAL 0x02 /* Added by the optimizer. Do not code */ -#define TERM_CODED 0x04 /* This term is already coded */ -#define TERM_COPIED 0x08 /* Has a child */ -#define TERM_ORINFO 0x10 /* Need to free the WhereTerm.u.pOrInfo object */ -#define TERM_ANDINFO 0x20 /* Need to free the WhereTerm.u.pAndInfo obj */ -#define TERM_OR_OK 0x40 /* Used during OR-clause processing */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -# define TERM_VNULL 0x80 /* Manufactured x>NULL or x<=NULL term */ -#else -# define TERM_VNULL 0x00 /* Disabled if not using stat3 */ -#endif -#define TERM_LIKEOPT 0x100 /* Virtual terms from the LIKE optimization */ -#define TERM_LIKECOND 0x200 /* Conditionally this LIKE operator term */ -#define TERM_LIKE 0x400 /* The original LIKE operator */ -#define TERM_IS 0x800 /* Term.pExpr is an IS operator */ +#define TERM_DYNAMIC 0x0001 /* Need to call sqlite3ExprDelete(db, pExpr) */ +#define TERM_VIRTUAL 0x0002 /* Added by the optimizer. Do not code */ +#define TERM_CODED 0x0004 /* This term is already coded */ +#define TERM_COPIED 0x0008 /* Has a child */ +#define TERM_ORINFO 0x0010 /* Need to free the WhereTerm.u.pOrInfo object */ +#define TERM_ANDINFO 0x0020 /* Need to free the WhereTerm.u.pAndInfo obj */ +#define TERM_OK 0x0040 /* Used during OR-clause processing */ +#define TERM_VNULL 0x0080 /* Manufactured x>NULL or x<=NULL term */ +#define TERM_LIKEOPT 0x0100 /* Virtual terms from the LIKE optimization */ +#define TERM_LIKECOND 0x0200 /* Conditionally this LIKE operator term */ +#define TERM_LIKE 0x0400 /* The original LIKE operator */ +#define TERM_IS 0x0800 /* Term.pExpr is an IS operator */ #define TERM_VARSELECT 0x1000 /* Term.pExpr contains a correlated sub-query */ +#define TERM_HEURTRUTH 0x2000 /* Heuristic truthProb used */ +#ifdef SQLITE_ENABLE_STAT4 +# define TERM_HIGHTRUTH 0x4000 /* Term excludes few rows */ +#else +# define TERM_HIGHTRUTH 0 /* Only used with STAT4 */ +#endif +#define TERM_SLICE 0x8000 /* One slice of a row-value/vector comparison */ /* ** An instance of the WhereScan object is used as an iterator for locating @@ -132147,11 +154288,11 @@ struct WhereScan { WhereClause *pWC; /* WhereClause currently being scanned */ const char *zCollName; /* Required collating sequence, if not NULL */ Expr *pIdxExpr; /* Search for this index expression */ - char idxaff; /* Must match this affinity, if zCollName!=NULL */ - unsigned char nEquiv; /* Number of entries in aEquiv[] */ - unsigned char iEquiv; /* Next unused slot in aEquiv[] */ - u32 opMask; /* Acceptable operators */ int k; /* Resume scanning at this->pWC->a[this->k] */ + u32 opMask; /* Acceptable operators */ + char idxaff; /* Must match this affinity, if zCollName!=NULL */ + unsigned char iEquiv; /* Current slot in aiCur[] and aiColumn[] */ + unsigned char nEquiv; /* Number of entries in aiCur[] and aiColumn[] */ int aiCur[11]; /* Cursors in the equivalence class */ i16 aiColumn[11]; /* Corresponding column number in the eq-class */ }; @@ -132172,9 +154313,11 @@ struct WhereClause { WhereInfo *pWInfo; /* WHERE clause processing context */ WhereClause *pOuter; /* Outer conjunction */ u8 op; /* Split operator. TK_AND or TK_OR */ + u8 hasOr; /* True if any a[].eOperator is WO_OR */ int nTerm; /* Number of terms */ int nSlot; /* Number of entries in a[] */ - WhereTerm *a; /* Each a[] describes a term of the WHERE cluase */ + int nBase; /* Number of terms through the last non-Virtual */ + WhereTerm *a; /* Each a[] describes a term of the WHERE clause */ #if defined(SQLITE_SMALL_STACK) WhereTerm aStatic[1]; /* Initial static space for a[] */ #else @@ -132203,8 +154346,8 @@ struct WhereAndInfo { ** An instance of the following structure keeps track of a mapping ** between VDBE cursor numbers and bits of the bitmasks in WhereTerm. ** -** The VDBE cursor numbers are small integers contained in -** SrcList_item.iCursor and Expr.iTable fields. For any given WHERE +** The VDBE cursor numbers are small integers contained in +** SrcItem.iCursor and Expr.iTable fields. For any given WHERE ** clause, the cursor numbers might not begin with 0 and they might ** contain gaps in the numbering sequence. But we want to make maximum ** use of the bits in our bitmasks. This structure provides a mapping @@ -132231,11 +154374,6 @@ struct WhereMaskSet { int ix[BMS]; /* Cursor assigned to each bit */ }; -/* -** Initialize a WhereMaskSet object -*/ -#define initMaskSet(P) (P)->n=0 - /* ** This object is a convenience wrapper holding all information needed ** to construct WhereLoop objects for a particular query. @@ -132243,19 +154381,42 @@ struct WhereMaskSet { struct WhereLoopBuilder { WhereInfo *pWInfo; /* Information about this WHERE */ WhereClause *pWC; /* WHERE clause terms */ - ExprList *pOrderBy; /* ORDER BY clause */ WhereLoop *pNew; /* Template WhereLoop */ WhereOrSet *pOrSet; /* Record best loops here, if not NULL */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 UnpackedRecord *pRec; /* Probe for stat4 (if required) */ int nRecValid; /* Number of valid fields currently in pRec */ #endif - unsigned int bldFlags; /* SQLITE_BLDF_* flags */ + unsigned char bldFlags1; /* First set of SQLITE_BLDF_* flags */ + unsigned char bldFlags2; /* Second set of SQLITE_BLDF_* flags */ + unsigned int iPlanLimit; /* Search limiter */ }; /* Allowed values for WhereLoopBuider.bldFlags */ -#define SQLITE_BLDF_INDEXED 0x0001 /* An index is used */ -#define SQLITE_BLDF_UNIQUE 0x0002 /* All keys of a UNIQUE index used */ +#define SQLITE_BLDF1_INDEXED 0x0001 /* An index is used */ +#define SQLITE_BLDF1_UNIQUE 0x0002 /* All keys of a UNIQUE index used */ + +#define SQLITE_BLDF2_2NDPASS 0x0004 /* Second builder pass needed */ + +/* The WhereLoopBuilder.iPlanLimit is used to limit the number of +** index+constraint combinations the query planner will consider for a +** particular query. If this parameter is unlimited, then certain +** pathological queries can spend excess time in the sqlite3WhereBegin() +** routine. The limit is high enough that is should not impact real-world +** queries. +** +** SQLITE_QUERY_PLANNER_LIMIT is the baseline limit. The limit is +** increased by SQLITE_QUERY_PLANNER_LIMIT_INCR before each term of the FROM +** clause is processed, so that every table in a join is guaranteed to be +** able to propose a some index+constraint combinations even if the initial +** baseline limit was exhausted by prior tables of the join. +*/ +#ifndef SQLITE_QUERY_PLANNER_LIMIT +# define SQLITE_QUERY_PLANNER_LIMIT 20000 +#endif +#ifndef SQLITE_QUERY_PLANNER_LIMIT_INCR +# define SQLITE_QUERY_PLANNER_LIMIT_INCR 1000 +#endif /* ** The WHERE clause processing routine has two halves. The @@ -132272,24 +154433,30 @@ struct WhereInfo { SrcList *pTabList; /* List of tables in the join */ ExprList *pOrderBy; /* The ORDER BY clause or NULL */ ExprList *pResultSet; /* Result set of the query */ +#if WHERETRACE_ENABLED Expr *pWhere; /* The complete WHERE clause */ - LogEst iLimit; /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */ +#endif + Select *pSelect; /* The entire SELECT statement containing WHERE */ int aiCurOnePass[2]; /* OP_OpenWrite cursors for the ONEPASS opt */ int iContinue; /* Jump here to continue with next record */ int iBreak; /* Jump here to break out of the loop */ int savedNQueryLoop; /* pParse->nQueryLoop outside the WHERE loop */ u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */ + LogEst iLimit; /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */ u8 nLevel; /* Number of nested loop */ i8 nOBSat; /* Number of ORDER BY terms satisfied by indices */ - u8 sorted; /* True if really sorted (not just grouped) */ u8 eOnePass; /* ONEPASS_OFF, or _SINGLE, or _MULTI */ - u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */ u8 eDistinct; /* One of the WHERE_DISTINCT_* values */ - u8 bOrderedInnerLoop; /* True if only the inner-most loop is ordered */ - int iTop; /* The very beginning of the WHERE loop */ - WhereLoop *pLoops; /* List of all WhereLoop objects */ - Bitmask revMask; /* Mask of ORDER BY terms that need reversing */ + unsigned bDeferredSeek :1; /* Uses OP_DeferredSeek */ + unsigned untestedTerms :1; /* Not all WHERE terms resolved by outer loop */ + unsigned bOrderedInnerLoop:1;/* True if only the inner-most loop is ordered */ + unsigned sorted :1; /* True if really sorted (not just grouped) */ LogEst nRowOut; /* Estimated number of output rows */ + int iTop; /* The very beginning of the WHERE loop */ + int iEndWhere; /* End of the WHERE clause itself */ + WhereLoop *pLoops; /* List of all WhereLoop objects */ + WhereMemBlock *pMemToFree;/* Memory to free when this object destroyed */ + Bitmask revMask; /* Mask of ORDER BY terms that need reversing */ WhereClause sWC; /* Decomposition of the WHERE clause */ WhereMaskSet sMaskSet; /* Map cursor numbers to bitmasks */ WhereLevel a[1]; /* Information about each nest loop in WHERE */ @@ -132303,6 +154470,8 @@ struct WhereInfo { SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet*,int); #ifdef WHERETRACE_ENABLED SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC); +SQLITE_PRIVATE void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm); +SQLITE_PRIVATE void sqlite3WhereLoopPrint(WhereLoop *p, WhereClause *pWC); #endif SQLITE_PRIVATE WhereTerm *sqlite3WhereFindTerm( WhereClause *pWC, /* The WHERE clause to be searched */ @@ -132312,6 +154481,8 @@ SQLITE_PRIVATE WhereTerm *sqlite3WhereFindTerm( u32 op, /* Mask of WO_xx values describing operator */ Index *pIdx /* Must be compatible with this index, if not NULL */ ); +SQLITE_PRIVATE void *sqlite3WhereMalloc(WhereInfo *pWInfo, u64 nByte); +SQLITE_PRIVATE void *sqlite3WhereRealloc(WhereInfo *pWInfo, void *pOld, u64 nByte); /* wherecode.c: */ #ifndef SQLITE_OMIT_EXPLAIN @@ -132321,8 +154492,14 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( WhereLevel *pLevel, /* Scan to write OP_Explain opcode for */ u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */ ); +SQLITE_PRIVATE int sqlite3WhereExplainBloomFilter( + const Parse *pParse, /* Parse context */ + const WhereInfo *pWInfo, /* WHERE clause */ + const WhereLevel *pLevel /* Bloom filter on this level */ +); #else # define sqlite3WhereExplainOneScan(u,v,w,x) 0 +# define sqlite3WhereExplainBloomFilter(u,v,w) 0 #endif /* SQLITE_OMIT_EXPLAIN */ #ifdef SQLITE_ENABLE_STMT_SCANSTATUS SQLITE_PRIVATE void sqlite3WhereAddScanStatus( @@ -132335,19 +154512,29 @@ SQLITE_PRIVATE void sqlite3WhereAddScanStatus( # define sqlite3WhereAddScanStatus(a, b, c, d) ((void)d) #endif SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( + Parse *pParse, /* Parsing context */ + Vdbe *v, /* Prepared statement under construction */ WhereInfo *pWInfo, /* Complete information about the WHERE clause */ int iLevel, /* Which level of pWInfo->a[] should be coded */ + WhereLevel *pLevel, /* The current level pointer */ Bitmask notReady /* Which tables are currently available */ ); +SQLITE_PRIVATE SQLITE_NOINLINE void sqlite3WhereRightJoinLoop( + WhereInfo *pWInfo, + int iLevel, + WhereLevel *pLevel +); /* whereexpr.c: */ SQLITE_PRIVATE void sqlite3WhereClauseInit(WhereClause*,WhereInfo*); SQLITE_PRIVATE void sqlite3WhereClauseClear(WhereClause*); SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause*,Expr*,u8); +SQLITE_PRIVATE void sqlite3WhereAddLimit(WhereClause*, Select*); SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet*, Expr*); +SQLITE_PRIVATE Bitmask sqlite3WhereExprUsageNN(WhereMaskSet*, Expr*); SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet*, ExprList*); SQLITE_PRIVATE void sqlite3WhereExprAnalyze(SrcList*, WhereClause*); -SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, struct SrcList_item*, WhereClause*); +SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, SrcItem*, WhereClause*); @@ -132379,8 +154566,9 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, struct SrcList_item*, WhereC #define WO_AND 0x0400 /* Two or more AND-connected terms */ #define WO_EQUIV 0x0800 /* Of the form A==B, both columns */ #define WO_NOOP 0x1000 /* This term does not restrict search space */ +#define WO_ROWVAL 0x2000 /* A row-value term */ -#define WO_ALL 0x1fff /* Mask of all possible WO_* values */ +#define WO_ALL 0x3fff /* Mask of all possible WO_* values */ #define WO_SINGLE 0x01ff /* Mask of all non-compound WO_* values */ /* @@ -132407,6 +154595,17 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, struct SrcList_item*, WhereC #define WHERE_SKIPSCAN 0x00008000 /* Uses the skip-scan algorithm */ #define WHERE_UNQ_WANTED 0x00010000 /* WHERE_ONEROW would have been helpful*/ #define WHERE_PARTIALIDX 0x00020000 /* The automatic index is partial */ +#define WHERE_IN_EARLYOUT 0x00040000 /* Perhaps quit IN loops early */ +#define WHERE_BIGNULL_SORT 0x00080000 /* Column nEq of index is BIGNULL */ +#define WHERE_IN_SEEKSCAN 0x00100000 /* Seek-scan optimization for IN */ +#define WHERE_TRANSCONS 0x00200000 /* Uses a transitive constraint */ +#define WHERE_BLOOMFILTER 0x00400000 /* Consider using a Bloom-filter */ +#define WHERE_SELFCULL 0x00800000 /* nOut reduced by extra WHERE terms */ +#define WHERE_OMIT_OFFSET 0x01000000 /* Set offset counter to zero */ +#define WHERE_VIEWSCAN 0x02000000 /* A full-scan of a VIEW or subquery */ +#define WHERE_EXPRIDX 0x04000000 /* Uses an index-on-expressions */ + +#endif /* !defined(SQLITE_WHEREINT_H) */ /************** End of whereInt.h ********************************************/ /************** Continuing where we left off in wherecode.c ******************/ @@ -132420,7 +154619,7 @@ static const char *explainIndexColumnName(Index *pIdx, int i){ i = pIdx->aiColumn[i]; if( i==XN_EXPR ) return ""; if( i==XN_ROWID ) return "rowid"; - return pIdx->pTable->aCol[i].zName; + return pIdx->pTable->aCol[i].zCnName; } /* @@ -132462,7 +154661,7 @@ static void explainAppendTerm( } /* -** Argument pLevel describes a strategy for scanning table pTab. This +** Argument pLevel describes a strategy for scanning table pTab. This ** function appends text to pStr that describes the subset of table ** rows scanned by the strategy in the form of an SQL expression. ** @@ -132502,9 +154701,9 @@ static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop){ /* ** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN -** command, or if either SQLITE_DEBUG or SQLITE_ENABLE_STMT_SCANSTATUS was -** defined at compile-time. If it is not a no-op, a single OP_Explain opcode -** is added to the output to describe the table scan strategy in pLevel. +** command, or if stmt_scanstatus_v2() stats are enabled, or if SQLITE_DEBUG +** was defined at compile-time. If it is not a no-op, a single OP_Explain +** opcode is added to the output to describe the table scan strategy in pLevel. ** ** If an OP_Explain opcode is added to the VM, its address is returned. ** Otherwise, if no OP_Explain is coded, zero is returned. @@ -132516,11 +154715,11 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */ ){ int ret = 0; -#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS) - if( sqlite3ParseToplevel(pParse)->explain==2 ) +#if !defined(SQLITE_DEBUG) + if( sqlite3ParseToplevel(pParse)->explain==2 || IS_STMT_SCANSTATUS(pParse->db) ) #endif { - struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom]; + SrcItem *pItem = &pTabList->a[pLevel->iFrom]; Vdbe *v = pParse->pVdbe; /* VM being constructed */ sqlite3 *db = pParse->db; /* Database handle */ int isSearch; /* True for a SEARCH. False for SCAN. */ @@ -132539,16 +154738,8 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( || (wctrlFlags&(WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX)); sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH); - sqlite3_str_appendall(&str, isSearch ? "SEARCH" : "SCAN"); - if( pItem->pSelect ){ - sqlite3_str_appendf(&str, " SUBQUERY 0x%p", pItem->pSelect); - }else{ - sqlite3_str_appendf(&str, " TABLE %s", pItem->zName); - } - - if( pItem->zAlias ){ - sqlite3_str_appendf(&str, " AS %s", pItem->zAlias); - } + str.printfFlags = SQLITE_PRINTF_INTERNAL; + sqlite3_str_appendf(&str, "%s %S", isSearch ? "SEARCH" : "SCAN", pItem); if( (flags & (WHERE_IPK|WHERE_VIRTUALTABLE))==0 ){ const char *zFmt = 0; Index *pIdx; @@ -132575,19 +154766,27 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( explainIndexRange(&str, pLoop); } }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){ - const char *zRangeOp; + char cRangeOp; +#if 0 /* Better output, but breaks many tests */ + const Table *pTab = pItem->pTab; + const char *zRowid = pTab->iPKey>=0 ? pTab->aCol[pTab->iPKey].zCnName: + "rowid"; +#else + const char *zRowid = "rowid"; +#endif + sqlite3_str_appendf(&str, " USING INTEGER PRIMARY KEY (%s", zRowid); if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){ - zRangeOp = "="; + cRangeOp = '='; }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){ - zRangeOp = ">? AND rowid<"; + sqlite3_str_appendf(&str, ">? AND %s", zRowid); + cRangeOp = '<'; }else if( flags&WHERE_BTM_LIMIT ){ - zRangeOp = ">"; + cRangeOp = '>'; }else{ assert( flags&WHERE_TOP_LIMIT); - zRangeOp = "<"; + cRangeOp = '<'; } - sqlite3_str_appendf(&str, - " USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp); + sqlite3_str_appendf(&str, "%c?)", cRangeOp); } #ifndef SQLITE_OMIT_VIRTUALTABLE else if( (flags & WHERE_VIRTUALTABLE)!=0 ){ @@ -132595,6 +154794,9 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr); } #endif + if( pItem->fg.jointype & JT_LEFT ){ + sqlite3_str_appendf(&str, " LEFT-JOIN"); + } #ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS if( pLoop->nOut>=10 ){ sqlite3_str_appendf(&str, " (~%llu rows)", @@ -132604,21 +154806,74 @@ SQLITE_PRIVATE int sqlite3WhereExplainOneScan( } #endif zMsg = sqlite3StrAccumFinish(&str); + sqlite3ExplainBreakpoint("",zMsg); ret = sqlite3VdbeAddOp4(v, OP_Explain, sqlite3VdbeCurrentAddr(v), pParse->addrExplain, 0, zMsg,P4_DYNAMIC); } return ret; } + +/* +** Add a single OP_Explain opcode that describes a Bloom filter. +** +** Or if not processing EXPLAIN QUERY PLAN and not in a SQLITE_DEBUG and/or +** SQLITE_ENABLE_STMT_SCANSTATUS build, then OP_Explain opcodes are not +** required and this routine is a no-op. +** +** If an OP_Explain opcode is added to the VM, its address is returned. +** Otherwise, if no OP_Explain is coded, zero is returned. +*/ +SQLITE_PRIVATE int sqlite3WhereExplainBloomFilter( + const Parse *pParse, /* Parse context */ + const WhereInfo *pWInfo, /* WHERE clause */ + const WhereLevel *pLevel /* Bloom filter on this level */ +){ + int ret = 0; + SrcItem *pItem = &pWInfo->pTabList->a[pLevel->iFrom]; + Vdbe *v = pParse->pVdbe; /* VM being constructed */ + sqlite3 *db = pParse->db; /* Database handle */ + char *zMsg; /* Text to add to EQP output */ + int i; /* Loop counter */ + WhereLoop *pLoop; /* The where loop */ + StrAccum str; /* EQP output string */ + char zBuf[100]; /* Initial space for EQP output string */ + + sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH); + str.printfFlags = SQLITE_PRINTF_INTERNAL; + sqlite3_str_appendf(&str, "BLOOM FILTER ON %S (", pItem); + pLoop = pLevel->pWLoop; + if( pLoop->wsFlags & WHERE_IPK ){ + const Table *pTab = pItem->pTab; + if( pTab->iPKey>=0 ){ + sqlite3_str_appendf(&str, "%s=?", pTab->aCol[pTab->iPKey].zCnName); + }else{ + sqlite3_str_appendf(&str, "rowid=?"); + } + }else{ + for(i=pLoop->nSkip; iu.btree.nEq; i++){ + const char *z = explainIndexColumnName(pLoop->u.btree.pIndex, i); + if( i>pLoop->nSkip ) sqlite3_str_append(&str, " AND ", 5); + sqlite3_str_appendf(&str, "%s=?", z); + } + } + sqlite3_str_append(&str, ")", 1); + zMsg = sqlite3StrAccumFinish(&str); + ret = sqlite3VdbeAddOp4(v, OP_Explain, sqlite3VdbeCurrentAddr(v), + pParse->addrExplain, 0, zMsg,P4_DYNAMIC); + + sqlite3VdbeScanStatus(v, sqlite3VdbeCurrentAddr(v)-1, 0, 0, 0, 0); + return ret; +} #endif /* SQLITE_OMIT_EXPLAIN */ #ifdef SQLITE_ENABLE_STMT_SCANSTATUS /* ** Configure the VM passed as the first argument with an -** sqlite3_stmt_scanstatus() entry corresponding to the scan used to -** implement level pLvl. Argument pSrclist is a pointer to the FROM +** sqlite3_stmt_scanstatus() entry corresponding to the scan used to +** implement level pLvl. Argument pSrclist is a pointer to the FROM ** clause that the scan reads data from. ** -** If argument addrExplain is not 0, it must be the address of an +** If argument addrExplain is not 0, it must be the address of an ** OP_Explain instruction that describes the same loop. */ SQLITE_PRIVATE void sqlite3WhereAddScanStatus( @@ -132627,16 +154882,37 @@ SQLITE_PRIVATE void sqlite3WhereAddScanStatus( WhereLevel *pLvl, /* Level to add scanstatus() entry for */ int addrExplain /* Address of OP_Explain (or 0) */ ){ - const char *zObj = 0; - WhereLoop *pLoop = pLvl->pWLoop; - if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 && pLoop->u.btree.pIndex!=0 ){ - zObj = pLoop->u.btree.pIndex->zName; - }else{ - zObj = pSrclist->a[pLvl->iFrom].zName; + if( IS_STMT_SCANSTATUS( sqlite3VdbeDb(v) ) ){ + const char *zObj = 0; + WhereLoop *pLoop = pLvl->pWLoop; + int wsFlags = pLoop->wsFlags; + int viaCoroutine = 0; + + if( (wsFlags & WHERE_VIRTUALTABLE)==0 && pLoop->u.btree.pIndex!=0 ){ + zObj = pLoop->u.btree.pIndex->zName; + }else{ + zObj = pSrclist->a[pLvl->iFrom].zName; + viaCoroutine = pSrclist->a[pLvl->iFrom].fg.viaCoroutine; + } + sqlite3VdbeScanStatus( + v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj + ); + + if( viaCoroutine==0 ){ + if( (wsFlags & (WHERE_MULTI_OR|WHERE_AUTO_INDEX))==0 ){ + sqlite3VdbeScanStatusRange(v, addrExplain, -1, pLvl->iTabCur); + } + if( wsFlags & WHERE_INDEXED ){ + sqlite3VdbeScanStatusRange(v, addrExplain, -1, pLvl->iIdxCur); + } + }else{ + int addr = pSrclist->a[pLvl->iFrom].addrFillSub; + VdbeOp *pOp = sqlite3VdbeGetOp(v, addr-1); + assert( sqlite3VdbeDb(v)->mallocFailed || pOp->opcode==OP_InitCoroutine ); + assert( sqlite3VdbeDb(v)->mallocFailed || pOp->p2>addr ); + sqlite3VdbeScanStatusRange(v, addrExplain, addr, pOp->p2-1); + } } - sqlite3VdbeScanStatus( - v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj - ); } #endif @@ -132674,7 +154950,7 @@ SQLITE_PRIVATE void sqlite3WhereAddScanStatus( ** ** Only the parent term was in the original WHERE clause. The child1 ** and child2 terms were added by the LIKE optimization. If both of -** the virtual child terms are valid, then testing of the parent can be +** the virtual child terms are valid, then testing of the parent can be ** skipped. ** ** Usually the parent term is marked as TERM_CODED. But if the parent @@ -132687,7 +154963,7 @@ static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){ int nLoop = 0; assert( pTerm!=0 ); while( (pTerm->wtFlags & TERM_CODED)==0 - && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin)) + && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_OuterON)) && (pLevel->notReady & pTerm->prereqAll)==0 ){ if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){ @@ -132695,6 +154971,12 @@ static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){ }else{ pTerm->wtFlags |= TERM_CODED; } +#ifdef WHERETRACE_ENABLED + if( (sqlite3WhereTrace & 0x4001)==0x4001 ){ + sqlite3DebugPrintf("DISABLE-"); + sqlite3WhereTermPrint(pTerm, (int)(pTerm - (pTerm->pWC->a))); + } +#endif if( pTerm->iParent<0 ) break; pTerm = &pTerm->pWC->a[pTerm->iParent]; assert( pTerm!=0 ); @@ -132706,11 +154988,11 @@ static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){ /* ** Code an OP_Affinity opcode to apply the column affinity string zAff -** to the n registers starting at base. +** to the n registers starting at base. ** -** As an optimization, SQLITE_AFF_BLOB entries (which are no-ops) at the -** beginning and end of zAff are ignored. If all entries in zAff are -** SQLITE_AFF_BLOB, then no code gets generated. +** As an optimization, SQLITE_AFF_BLOB and SQLITE_AFF_NONE entries (which +** are no-ops) at the beginning and end of zAff are ignored. If all entries +** in zAff are SQLITE_AFF_BLOB or SQLITE_AFF_NONE, then no code gets generated. ** ** This routine makes its own copy of zAff so that the caller is free ** to modify zAff after this routine returns. @@ -132723,27 +155005,27 @@ static void codeApplyAffinity(Parse *pParse, int base, int n, char *zAff){ } assert( v!=0 ); - /* Adjust base and n to skip over SQLITE_AFF_BLOB entries at the beginning - ** and end of the affinity string. + /* Adjust base and n to skip over SQLITE_AFF_BLOB and SQLITE_AFF_NONE + ** entries at the beginning and end of the affinity string. */ - while( n>0 && zAff[0]==SQLITE_AFF_BLOB ){ + assert( SQLITE_AFF_NONE0 && zAff[0]<=SQLITE_AFF_BLOB ){ n--; base++; zAff++; } - while( n>1 && zAff[n-1]==SQLITE_AFF_BLOB ){ + while( n>1 && zAff[n-1]<=SQLITE_AFF_BLOB ){ n--; } /* Code the OP_Affinity opcode if there is anything left to do. */ if( n>0 ){ sqlite3VdbeAddOp4(v, OP_Affinity, base, n, 0, zAff, n); - sqlite3ExprCacheAffinityChange(pParse, base, n); } } /* -** Expression pRight, which is the RHS of a comparison operation, is +** Expression pRight, which is the RHS of a comparison operation, is ** either a vector of n elements or, if n==1, a scalar expression. ** Before the comparison operation, affinity zAff is to be applied ** to the pRight values. This function modifies characters within the @@ -132805,60 +155087,75 @@ static Expr *removeUnindexableInClauseTerms( Expr *pX /* The IN expression to be reduced */ ){ sqlite3 *db = pParse->db; - Expr *pNew = sqlite3ExprDup(db, pX, 0); + Select *pSelect; /* Pointer to the SELECT on the RHS */ + Expr *pNew; + pNew = sqlite3ExprDup(db, pX, 0); if( db->mallocFailed==0 ){ - ExprList *pOrigRhs = pNew->x.pSelect->pEList; /* Original unmodified RHS */ - ExprList *pOrigLhs = pNew->pLeft->x.pList; /* Original unmodified LHS */ - ExprList *pRhs = 0; /* New RHS after modifications */ - ExprList *pLhs = 0; /* New LHS after mods */ - int i; /* Loop counter */ - Select *pSelect; /* Pointer to the SELECT on the RHS */ + for(pSelect=pNew->x.pSelect; pSelect; pSelect=pSelect->pPrior){ + ExprList *pOrigRhs; /* Original unmodified RHS */ + ExprList *pOrigLhs = 0; /* Original unmodified LHS */ + ExprList *pRhs = 0; /* New RHS after modifications */ + ExprList *pLhs = 0; /* New LHS after mods */ + int i; /* Loop counter */ - for(i=iEq; inLTerm; i++){ - if( pLoop->aLTerm[i]->pExpr==pX ){ - int iField = pLoop->aLTerm[i]->iField - 1; - assert( pOrigRhs->a[iField].pExpr!=0 ); - pRhs = sqlite3ExprListAppend(pParse, pRhs, pOrigRhs->a[iField].pExpr); - pOrigRhs->a[iField].pExpr = 0; - assert( pOrigLhs->a[iField].pExpr!=0 ); - pLhs = sqlite3ExprListAppend(pParse, pLhs, pOrigLhs->a[iField].pExpr); - pOrigLhs->a[iField].pExpr = 0; + assert( ExprUseXSelect(pNew) ); + pOrigRhs = pSelect->pEList; + assert( pNew->pLeft!=0 ); + assert( ExprUseXList(pNew->pLeft) ); + if( pSelect==pNew->x.pSelect ){ + pOrigLhs = pNew->pLeft->x.pList; } - } - sqlite3ExprListDelete(db, pOrigRhs); - sqlite3ExprListDelete(db, pOrigLhs); - pNew->pLeft->x.pList = pLhs; - pNew->x.pSelect->pEList = pRhs; - if( pLhs && pLhs->nExpr==1 ){ - /* Take care here not to generate a TK_VECTOR containing only a - ** single value. Since the parser never creates such a vector, some - ** of the subroutines do not handle this case. */ - Expr *p = pLhs->a[0].pExpr; - pLhs->a[0].pExpr = 0; - sqlite3ExprDelete(db, pNew->pLeft); - pNew->pLeft = p; - } - pSelect = pNew->x.pSelect; - if( pSelect->pOrderBy ){ - /* If the SELECT statement has an ORDER BY clause, zero the - ** iOrderByCol variables. These are set to non-zero when an - ** ORDER BY term exactly matches one of the terms of the - ** result-set. Since the result-set of the SELECT statement may - ** have been modified or reordered, these variables are no longer - ** set correctly. Since setting them is just an optimization, - ** it's easiest just to zero them here. */ - ExprList *pOrderBy = pSelect->pOrderBy; - for(i=0; inExpr; i++){ - pOrderBy->a[i].u.x.iOrderByCol = 0; + for(i=iEq; inLTerm; i++){ + if( pLoop->aLTerm[i]->pExpr==pX ){ + int iField; + assert( (pLoop->aLTerm[i]->eOperator & (WO_OR|WO_AND))==0 ); + iField = pLoop->aLTerm[i]->u.x.iField - 1; + if( pOrigRhs->a[iField].pExpr==0 ) continue; /* Duplicate PK column */ + pRhs = sqlite3ExprListAppend(pParse, pRhs, pOrigRhs->a[iField].pExpr); + pOrigRhs->a[iField].pExpr = 0; + if( pOrigLhs ){ + assert( pOrigLhs->a[iField].pExpr!=0 ); + pLhs = sqlite3ExprListAppend(pParse,pLhs,pOrigLhs->a[iField].pExpr); + pOrigLhs->a[iField].pExpr = 0; + } + } + } + sqlite3ExprListDelete(db, pOrigRhs); + if( pOrigLhs ){ + sqlite3ExprListDelete(db, pOrigLhs); + pNew->pLeft->x.pList = pLhs; + } + pSelect->pEList = pRhs; + if( pLhs && pLhs->nExpr==1 ){ + /* Take care here not to generate a TK_VECTOR containing only a + ** single value. Since the parser never creates such a vector, some + ** of the subroutines do not handle this case. */ + Expr *p = pLhs->a[0].pExpr; + pLhs->a[0].pExpr = 0; + sqlite3ExprDelete(db, pNew->pLeft); + pNew->pLeft = p; + } + if( pSelect->pOrderBy ){ + /* If the SELECT statement has an ORDER BY clause, zero the + ** iOrderByCol variables. These are set to non-zero when an + ** ORDER BY term exactly matches one of the terms of the + ** result-set. Since the result-set of the SELECT statement may + ** have been modified or reordered, these variables are no longer + ** set correctly. Since setting them is just an optimization, + ** it's easiest just to zero them here. */ + ExprList *pOrderBy = pSelect->pOrderBy; + for(i=0; inExpr; i++){ + pOrderBy->a[i].u.x.iOrderByCol = 0; + } } - } #if 0 - printf("For indexing, change the IN expr:\n"); - sqlite3TreeViewExpr(0, pX, 0); - printf("Into:\n"); - sqlite3TreeViewExpr(0, pNew, 0); + printf("For indexing, change the IN expr:\n"); + sqlite3TreeViewExpr(0, pX, 0); + printf("Into:\n"); + sqlite3TreeViewExpr(0, pNew, 0); #endif + } } return pNew; } @@ -132866,7 +155163,7 @@ static Expr *removeUnindexableInClauseTerms( /* ** Generate code for a single equality term of the WHERE clause. An equality -** term can be either X=expr or X IN (...). pTerm is the term to be +** term can be either X=expr or X IN (...). pTerm is the term to be ** coded. ** ** The current value for the constraint is left in a register, the index @@ -132930,41 +155227,51 @@ static int codeEqualityTerm( if( pLoop->aLTerm[i]->pExpr==pX ) nEq++; } - if( (pX->flags & EP_xIsSelect)==0 || pX->x.pSelect->pEList->nExpr==1 ){ - eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, 0); + iTab = 0; + if( !ExprUseXSelect(pX) || pX->x.pSelect->pEList->nExpr==1 ){ + eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, 0, &iTab); }else{ - sqlite3 *db = pParse->db; - pX = removeUnindexableInClauseTerms(pParse, iEq, pLoop, pX); - - if( !db->mallocFailed ){ - aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*nEq); - eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap); - pTerm->pExpr->iTable = pX->iTable; + Expr *pExpr = pTerm->pExpr; + if( pExpr->iTable==0 || !ExprHasProperty(pExpr, EP_Subrtn) ){ + sqlite3 *db = pParse->db; + pX = removeUnindexableInClauseTerms(pParse, iEq, pLoop, pX); + if( !db->mallocFailed ){ + aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*nEq); + eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap,&iTab); + pExpr->iTable = iTab; + } + sqlite3ExprDelete(db, pX); + }else{ + int n = sqlite3ExprVectorSize(pX->pLeft); + aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*MAX(nEq,n)); + eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap, &iTab); } - sqlite3ExprDelete(db, pX); - pX = pTerm->pExpr; + pX = pExpr; } if( eType==IN_INDEX_INDEX_DESC ){ testcase( bRev ); bRev = !bRev; } - iTab = pX->iTable; sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iTab, 0); VdbeCoverageIf(v, bRev); VdbeCoverageIf(v, !bRev); - assert( (pLoop->wsFlags & WHERE_MULTI_OR)==0 ); + assert( (pLoop->wsFlags & WHERE_MULTI_OR)==0 ); pLoop->wsFlags |= WHERE_IN_ABLE; if( pLevel->u.in.nIn==0 ){ - pLevel->addrNxt = sqlite3VdbeMakeLabel(v); + pLevel->addrNxt = sqlite3VdbeMakeLabel(pParse); + } + if( iEq>0 && (pLoop->wsFlags & WHERE_IN_SEEKSCAN)==0 ){ + pLoop->wsFlags |= WHERE_IN_EARLYOUT; } i = pLevel->u.in.nIn; pLevel->u.in.nIn += nEq; pLevel->u.in.aInLoop = - sqlite3DbReallocOrFree(pParse->db, pLevel->u.in.aInLoop, - sizeof(pLevel->u.in.aInLoop[0])*pLevel->u.in.nIn); + sqlite3WhereRealloc(pTerm->pWC->pWInfo, + pLevel->u.in.aInLoop, + sizeof(pLevel->u.in.aInLoop[0])*pLevel->u.in.nIn); pIn = pLevel->u.in.aInLoop; if( pIn ){ int iMap = 0; /* Index in aiMap[] */ @@ -132973,7 +155280,6 @@ static int codeEqualityTerm( if( pLoop->aLTerm[i]->pExpr==pX ){ int iOut = iReg + i - iEq; if( eType==IN_INDEX_ROWID ){ - testcase( nEq>1 ); /* Happens with a UNIQUE index on ROWID */ pIn->addrInTop = sqlite3VdbeAddOp2(v, OP_Rowid, iTab, iOut); }else{ int iCol = aiMap ? aiMap[iMap++] : 0; @@ -132982,20 +155288,49 @@ static int codeEqualityTerm( sqlite3VdbeAddOp1(v, OP_IsNull, iOut); VdbeCoverage(v); if( i==iEq ){ pIn->iCur = iTab; - pIn->eEndLoopOp = bRev ? OP_PrevIfOpen : OP_NextIfOpen; + pIn->eEndLoopOp = bRev ? OP_Prev : OP_Next; + if( iEq>0 ){ + pIn->iBase = iReg - i; + pIn->nPrefix = i; + }else{ + pIn->nPrefix = 0; + } }else{ pIn->eEndLoopOp = OP_Noop; } pIn++; } } + testcase( iEq>0 + && (pLoop->wsFlags & WHERE_IN_SEEKSCAN)==0 + && (pLoop->wsFlags & WHERE_VIRTUALTABLE)!=0 ); + if( iEq>0 + && (pLoop->wsFlags & (WHERE_IN_SEEKSCAN|WHERE_VIRTUALTABLE))==0 + ){ + sqlite3VdbeAddOp3(v, OP_SeekHit, pLevel->iIdxCur, 0, iEq); + } }else{ pLevel->u.in.nIn = 0; } sqlite3DbFree(pParse->db, aiMap); #endif } - disableTerm(pLevel, pTerm); + + /* As an optimization, try to disable the WHERE clause term that is + ** driving the index as it will always be true. The correct answer is + ** obtained regardless, but we might get the answer with fewer CPU cycles + ** by omitting the term. + ** + ** But do not disable the term unless we are certain that the term is + ** not a transitive constraint. For an example of where that does not + ** work, see https://sqlite.org/forum/forumpost/eb8613976a (2021-05-04) + */ + if( (pLevel->pWLoop->wsFlags & WHERE_TRANSCONS)==0 + || (pTerm->eOperator & WO_EQUIV)==0 + ){ + disableTerm(pLevel, pTerm); + } + return iReg; } @@ -133006,7 +155341,7 @@ static int codeEqualityTerm( ** For example, consider table t1(a,b,c,d,e,f) with index i1(a,b,c). ** Suppose the WHERE clause is this: a==5 AND b IN (1,2,3) AND c>5 AND c<10 ** The index has as many as three equality constraints, but in this -** example, the third "c" value is an inequality. So only two +** example, the third "c" value is an inequality. So only two ** constraints are coded. This routine will generate code to evaluate ** a==5 and b IN (1,2,3). The current values for a and b will be stored ** in consecutive registers and the index of the first register is returned. @@ -133073,7 +155408,7 @@ static int codeAllEqualityTerms( /* Figure out how many memory cells we will need then allocate them. */ regBase = pParse->nMem + 1; - nReg = pLoop->u.btree.nEq + nExtraReg; + nReg = nEq + nExtraReg; pParse->nMem += nReg; zAff = sqlite3DbStrDup(pParse->db,sqlite3IndexAffinityStr(pParse->db,pIdx)); @@ -133081,11 +155416,13 @@ static int codeAllEqualityTerms( if( nSkip ){ int iIdxCur = pLevel->iIdxCur; + sqlite3VdbeAddOp3(v, OP_Null, 0, regBase, regBase+nSkip-1); sqlite3VdbeAddOp1(v, (bRev?OP_Last:OP_Rewind), iIdxCur); VdbeCoverageIf(v, bRev==0); VdbeCoverageIf(v, bRev!=0); VdbeComment((v, "begin skip-scan on %s", pIdx->zName)); j = sqlite3VdbeAddOp0(v, OP_Goto); + assert( pLevel->addrSkip==0 ); pLevel->addrSkip = sqlite3VdbeAddOp4Int(v, (bRev?OP_SeekLT:OP_SeekGT), iIdxCur, 0, regBase, nSkip); VdbeCoverageIf(v, bRev==0); @@ -133096,7 +155433,7 @@ static int codeAllEqualityTerms( testcase( pIdx->aiColumn[j]==XN_EXPR ); VdbeComment((v, "%s", explainIndexColumnName(pIdx, j))); } - } + } /* Evaluate the equality constraints */ @@ -133105,7 +155442,7 @@ static int codeAllEqualityTerms( int r1; pTerm = pLoop->aLTerm[j]; assert( pTerm!=0 ); - /* The following testcase is true for indices with redundant columns. + /* The following testcase is true for indices with redundant columns. ** Ex: CREATE INDEX i1 ON t1(a,b,a); SELECT * FROM t1 WHERE a=0 AND b=0; */ testcase( (pTerm->wtFlags & TERM_CODED)!=0 ); testcase( pTerm->wtFlags & TERM_VIRTUAL ); @@ -133115,14 +155452,14 @@ static int codeAllEqualityTerms( sqlite3ReleaseTempReg(pParse, regBase); regBase = r1; }else{ - sqlite3VdbeAddOp2(v, OP_SCopy, r1, regBase+j); + sqlite3VdbeAddOp2(v, OP_Copy, r1, regBase+j); } } if( pTerm->eOperator & WO_IN ){ if( pTerm->pExpr->flags & EP_xIsSelect ){ /* No affinity ever needs to be (or should be) applied to a value - ** from the RHS of an "? IN (SELECT ...)" expression. The - ** sqlite3FindInIndex() routine has already ensured that the + ** from the RHS of an "? IN (SELECT ...)" expression. The + ** sqlite3FindInIndex() routine has already ensured that the ** affinity of the comparison has been applied to the value. */ if( zAff ) zAff[j] = SQLITE_AFF_BLOB; } @@ -133132,7 +155469,8 @@ static int codeAllEqualityTerms( sqlite3VdbeAddOp2(v, OP_IsNull, regBase+j, pLevel->addrBrk); VdbeCoverage(v); } - if( zAff ){ + if( pParse->nErr==0 ){ + assert( pParse->db->mallocFailed==0 ); if( sqlite3CompareAffinity(pRight, zAff[j])==SQLITE_AFF_BLOB ){ zAff[j] = SQLITE_AFF_BLOB; } @@ -133149,7 +155487,7 @@ static int codeAllEqualityTerms( #ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS /* ** If the most recently coded instruction is a constant range constraint -** (a string literal) that originated from the LIKE optimization, then +** (a string literal) that originated from the LIKE optimization, then ** set P3 and P5 on the OP_String opcode so that the string will be cast ** to a BLOB at appropriate times. ** @@ -133172,9 +155510,9 @@ static void whereLikeOptimizationStringFixup( if( pTerm->wtFlags & TERM_LIKEOPT ){ VdbeOp *pOp; assert( pLevel->iLikeRepCntr>0 ); - pOp = sqlite3VdbeGetOp(v, -1); + pOp = sqlite3VdbeGetLastOp(v); assert( pOp!=0 ); - assert( pOp->opcode==OP_String8 + assert( pOp->opcode==OP_String8 || pTerm->pWC->pWInfo->pParse->db->mallocFailed ); pOp->p3 = (int)(pLevel->iLikeRepCntr>>1); /* Register holding counter */ pOp->p5 = (u8)(pLevel->iLikeRepCntr&1); /* ASC or DESC */ @@ -133207,7 +155545,7 @@ static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){ assert( pHint->pIdx!=0 ); if( pExpr->op==TK_COLUMN && pExpr->iTable==pHint->iTabCur - && sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn)<0 + && sqlite3TableColumnToIndex(pHint->pIdx, pExpr->iColumn)<0 ){ pWalker->eCode = 1; } @@ -133217,7 +155555,7 @@ static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){ /* ** Test whether or not expression pExpr, which was part of a WHERE clause, ** should be included in the cursor-hint for a table that is on the rhs -** of a LEFT JOIN. Set Walker.eCode to non-zero before returning if the +** of a LEFT JOIN. Set Walker.eCode to non-zero before returning if the ** expression is not suitable. ** ** An expression is unsuitable if it might evaluate to non NULL even if @@ -133230,9 +155568,9 @@ static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){ ** CASE WHEN col THEN 0 ELSE 1 END */ static int codeCursorHintIsOrFunction(Walker *pWalker, Expr *pExpr){ - if( pExpr->op==TK_IS - || pExpr->op==TK_ISNULL || pExpr->op==TK_ISNOT - || pExpr->op==TK_NOTNULL || pExpr->op==TK_CASE + if( pExpr->op==TK_IS + || pExpr->op==TK_ISNULL || pExpr->op==TK_ISNOT + || pExpr->op==TK_NOTNULL || pExpr->op==TK_CASE ){ pWalker->eCode = 1; }else if( pExpr->op==TK_FUNCTION ){ @@ -133253,43 +155591,41 @@ static int codeCursorHintIsOrFunction(Walker *pWalker, Expr *pExpr){ ** that accesses any table other than the one identified by ** CCurHint.iTabCur, then do the following: ** -** 1) allocate a register and code an OP_Column instruction to read +** 1) allocate a register and code an OP_Column instruction to read ** the specified column into the new register, and ** -** 2) transform the expression node to a TK_REGISTER node that reads +** 2) transform the expression node to a TK_REGISTER node that reads ** from the newly populated register. ** -** Also, if the node is a TK_COLUMN that does access the table idenified +** Also, if the node is a TK_COLUMN that does access the table identified ** by pCCurHint.iTabCur, and an index is being used (which we will ** know because CCurHint.pIdx!=0) then transform the TK_COLUMN into ** an access of the index rather than the original table. */ static int codeCursorHintFixExpr(Walker *pWalker, Expr *pExpr){ int rc = WRC_Continue; + int reg; struct CCurHint *pHint = pWalker->u.pCCurHint; if( pExpr->op==TK_COLUMN ){ if( pExpr->iTable!=pHint->iTabCur ){ - Vdbe *v = pWalker->pParse->pVdbe; - int reg = ++pWalker->pParse->nMem; /* Register for column value */ - sqlite3ExprCodeGetColumnOfTable( - v, pExpr->pTab, pExpr->iTable, pExpr->iColumn, reg - ); + reg = ++pWalker->pParse->nMem; /* Register for column value */ + reg = sqlite3ExprCodeTarget(pWalker->pParse, pExpr, reg); pExpr->op = TK_REGISTER; pExpr->iTable = reg; }else if( pHint->pIdx!=0 ){ pExpr->iTable = pHint->iIdxCur; - pExpr->iColumn = sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn); + pExpr->iColumn = sqlite3TableColumnToIndex(pHint->pIdx, pExpr->iColumn); assert( pExpr->iColumn>=0 ); } - }else if( pExpr->op==TK_AGG_FUNCTION ){ - /* An aggregate function in the WHERE clause of a query means this must - ** be a correlated sub-query, and expression pExpr is an aggregate from - ** the parent context. Do not walk the function arguments in this case. - ** - ** todo: It should be possible to replace this node with a TK_REGISTER - ** expression, as the result of the expression must be stored in a - ** register at this point. The same holds for TK_AGG_COLUMN nodes. */ + }else if( pExpr->pAggInfo ){ rc = WRC_Prune; + reg = ++pWalker->pParse->nMem; /* Register for column value */ + reg = sqlite3ExprCodeTarget(pWalker->pParse, pExpr, reg); + pExpr->op = TK_REGISTER; + pExpr->iTable = reg; + }else if( pExpr->op==TK_TRUEFALSE ){ + /* Do not walk disabled expressions. tag-20230504-1 */ + return WRC_Prune; } return rc; } @@ -133298,7 +155634,7 @@ static int codeCursorHintFixExpr(Walker *pWalker, Expr *pExpr){ ** Insert an OP_CursorHint instruction if it is appropriate to do so. */ static void codeCursorHint( - struct SrcList_item *pTabItem, /* FROM clause item */ + SrcItem *pTabItem, /* FROM clause item */ WhereInfo *pWInfo, /* The where clause */ WhereLevel *pLevel, /* Which loop to provide hints for */ WhereTerm *pEndRange /* Hint this end-of-scan boundary term if not NULL */ @@ -133325,23 +155661,23 @@ static void codeCursorHint( sWalker.pParse = pParse; sWalker.u.pCCurHint = &sHint; pWC = &pWInfo->sWC; - for(i=0; inTerm; i++){ + for(i=0; inBase; i++){ pTerm = &pWC->a[i]; if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; if( pTerm->prereqAll & pLevel->notReady ) continue; - /* Any terms specified as part of the ON(...) clause for any LEFT + /* Any terms specified as part of the ON(...) clause for any LEFT ** JOIN for which the current table is not the rhs are omitted - ** from the cursor-hint. + ** from the cursor-hint. ** - ** If this table is the rhs of a LEFT JOIN, "IS" or "IS NULL" terms + ** If this table is the rhs of a LEFT JOIN, "IS" or "IS NULL" terms ** that were specified as part of the WHERE clause must be excluded. ** This is to address the following: ** ** SELECT ... t1 LEFT JOIN t2 ON (t1.a=t2.b) WHERE t2.c IS NULL; ** ** Say there is a single row in t2 that matches (t1.a=t2.b), but its - ** t2.c values is not NULL. If the (t2.c IS NULL) constraint is + ** t2.c values is not NULL. If the (t2.c IS NULL) constraint is ** pushed down to the cursor, this row is filtered out, causing ** SQLite to synthesize a row of NULL values. Which does match the ** WHERE clause, and so the query returns a row. Which is incorrect. @@ -133354,8 +155690,8 @@ static void codeCursorHint( */ if( pTabItem->fg.jointype & JT_LEFT ){ Expr *pExpr = pTerm->pExpr; - if( !ExprHasProperty(pExpr, EP_FromJoin) - || pExpr->iRightJoinTable!=pTabItem->iCursor + if( !ExprHasProperty(pExpr, EP_OuterON) + || pExpr->w.iJoin!=pTabItem->iCursor ){ sWalker.eCode = 0; sWalker.xExprCallback = codeCursorHintIsOrFunction; @@ -133363,7 +155699,7 @@ static void codeCursorHint( if( sWalker.eCode ) continue; } }else{ - if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) continue; + if( ExprHasProperty(pTerm->pExpr, EP_OuterON) ) continue; } /* All terms in pWLoop->aLTerm[] except pEndRange are used to initialize @@ -133387,12 +155723,12 @@ static void codeCursorHint( } /* If we survive all prior tests, that means this term is worth hinting */ - pExpr = sqlite3ExprAnd(db, pExpr, sqlite3ExprDup(db, pTerm->pExpr, 0)); + pExpr = sqlite3ExprAnd(pParse, pExpr, sqlite3ExprDup(db, pTerm->pExpr, 0)); } if( pExpr!=0 ){ sWalker.xExprCallback = codeCursorHintFixExpr; - sqlite3WalkExpr(&sWalker, pExpr); - sqlite3VdbeAddOp4(v, OP_CursorHint, + if( pParse->nErr==0 ) sqlite3WalkExpr(&sWalker, pExpr); + sqlite3VdbeAddOp4(v, OP_CursorHint, (sHint.pIdx ? sHint.iIdxCur : sHint.iTabCur), 0, 0, (const char*)pExpr, P4_EXPR); } @@ -133404,20 +155740,28 @@ static void codeCursorHint( /* ** Cursor iCur is open on an intkey b-tree (a table). Register iRowid contains ** a rowid value just read from cursor iIdxCur, open on index pIdx. This -** function generates code to do a deferred seek of cursor iCur to the +** function generates code to do a deferred seek of cursor iCur to the ** rowid stored in register iRowid. ** ** Normally, this is just: ** ** OP_DeferredSeek $iCur $iRowid ** +** Which causes a seek on $iCur to the row with rowid $iRowid. +** ** However, if the scan currently being coded is a branch of an OR-loop and -** the statement currently being coded is a SELECT, then P3 of OP_DeferredSeek -** is set to iIdxCur and P4 is set to point to an array of integers -** containing one entry for each column of the table cursor iCur is open -** on. For each table column, if the column is the i'th column of the -** index, then the corresponding array entry is set to (i+1). If the column -** does not appear in the index at all, the array entry is set to 0. +** the statement currently being coded is a SELECT, then additional information +** is added that might allow OP_Column to omit the seek and instead do its +** lookup on the index, thus avoiding an expensive seek operation. To +** enable this optimization, the P3 of OP_DeferredSeek is set to iIdxCur +** and P4 is set to an array of integers containing one entry for each column +** in the table. For each table column, if the column is the i'th +** column of the index, then the corresponding array entry is set to (i+1). +** If the column does not appear in the index at all, the array entry is set +** to 0. The OP_Column opcode can check this array to see if the column it +** wants is in the index and if it is, it will substitute the index cursor +** and column number and continue with those new values, rather than seeking +** the table cursor. */ static void codeDeferredSeek( WhereInfo *pWInfo, /* Where clause context */ @@ -133430,19 +155774,24 @@ static void codeDeferredSeek( assert( iIdxCur>0 ); assert( pIdx->aiColumn[pIdx->nColumn-1]==-1 ); - + + pWInfo->bDeferredSeek = 1; sqlite3VdbeAddOp3(v, OP_DeferredSeek, iIdxCur, 0, iCur); - if( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE) + if( (pWInfo->wctrlFlags & (WHERE_OR_SUBCLAUSE|WHERE_RIGHT_JOIN)) && DbMaskAllZero(sqlite3ParseToplevel(pParse)->writeMask) ){ int i; Table *pTab = pIdx->pTable; - int *ai = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*(pTab->nCol+1)); + u32 *ai = (u32*)sqlite3DbMallocZero(pParse->db, sizeof(u32)*(pTab->nCol+1)); if( ai ){ ai[0] = pTab->nCol; for(i=0; inColumn-1; i++){ + int x1, x2; assert( pIdx->aiColumn[i]nCol ); - if( pIdx->aiColumn[i]>=0 ) ai[pIdx->aiColumn[i]+1] = i+1; + x1 = pIdx->aiColumn[i]; + x2 = sqlite3TableColumnToStorage(pTab, x1); + testcase( x1!=x2 ); + if( x1>=0 ) ai[x2+1] = i+1; } sqlite3VdbeChangeP4(v, -1, (char*)ai, P4_INTARRAY); } @@ -133462,86 +155811,119 @@ static void codeExprOrVector(Parse *pParse, Expr *p, int iReg, int nReg){ assert( nReg>0 ); if( p && sqlite3ExprIsVector(p) ){ #ifndef SQLITE_OMIT_SUBQUERY - if( (p->flags & EP_xIsSelect) ){ + if( ExprUseXSelect(p) ){ Vdbe *v = pParse->pVdbe; - int iSelect = sqlite3CodeSubselect(pParse, p, 0, 0); + int iSelect; + assert( p->op==TK_SELECT ); + iSelect = sqlite3CodeSubselect(pParse, p); sqlite3VdbeAddOp3(v, OP_Copy, iSelect, iReg, nReg-1); }else #endif { int i; - ExprList *pList = p->x.pList; + const ExprList *pList; + assert( ExprUseXList(p) ); + pList = p->x.pList; assert( nReg<=pList->nExpr ); for(i=0; ia[i].pExpr, iReg+i); } } }else{ - assert( nReg==1 ); + assert( nReg==1 || pParse->nErr ); sqlite3ExprCode(pParse, p, iReg); } } -/* An instance of the IdxExprTrans object carries information about a -** mapping from an expression on table columns into a column in an index -** down through the Walker. +/* +** The pTruth expression is always true because it is the WHERE clause +** a partial index that is driving a query loop. Look through all of the +** WHERE clause terms on the query, and if any of those terms must be +** true because pTruth is true, then mark those WHERE clause terms as +** coded. */ -typedef struct IdxExprTrans { - Expr *pIdxExpr; /* The index expression */ - int iTabCur; /* The cursor of the corresponding table */ - int iIdxCur; /* The cursor for the index */ - int iIdxCol; /* The column for the index */ -} IdxExprTrans; - -/* The walker node callback used to transform matching expressions into -** a reference to an index column for an index on an expression. -** -** If pExpr matches, then transform it into a reference to the index column -** that contains the value of pExpr. -*/ -static int whereIndexExprTransNode(Walker *p, Expr *pExpr){ - IdxExprTrans *pX = p->u.pIdxTrans; - if( sqlite3ExprCompare(0, pExpr, pX->pIdxExpr, pX->iTabCur)==0 ){ - pExpr->op = TK_COLUMN; - pExpr->iTable = pX->iIdxCur; - pExpr->iColumn = pX->iIdxCol; - pExpr->pTab = 0; - return WRC_Prune; - }else{ - return WRC_Continue; +static void whereApplyPartialIndexConstraints( + Expr *pTruth, + int iTabCur, + WhereClause *pWC +){ + int i; + WhereTerm *pTerm; + while( pTruth->op==TK_AND ){ + whereApplyPartialIndexConstraints(pTruth->pLeft, iTabCur, pWC); + pTruth = pTruth->pRight; + } + for(i=0, pTerm=pWC->a; inTerm; i++, pTerm++){ + Expr *pExpr; + if( pTerm->wtFlags & TERM_CODED ) continue; + pExpr = pTerm->pExpr; + if( sqlite3ExprCompare(0, pExpr, pTruth, iTabCur)==0 ){ + pTerm->wtFlags |= TERM_CODED; + } } } /* -** For an indexes on expression X, locate every instance of expression X -** in pExpr and change that subexpression into a reference to the appropriate -** column of the index. +** This routine is called right after An OP_Filter has been generated and +** before the corresponding index search has been performed. This routine +** checks to see if there are additional Bloom filters in inner loops that +** can be checked prior to doing the index lookup. If there are available +** inner-loop Bloom filters, then evaluate those filters now, before the +** index lookup. The idea is that a Bloom filter check is way faster than +** an index lookup, and the Bloom filter might return false, meaning that +** the index lookup can be skipped. +** +** We know that an inner loop uses a Bloom filter because it has the +** WhereLevel.regFilter set. If an inner-loop Bloom filter is checked, +** then clear the WhereLevel.regFilter value to prevent the Bloom filter +** from being checked a second time when the inner loop is evaluated. */ -static void whereIndexExprTrans( - Index *pIdx, /* The Index */ - int iTabCur, /* Cursor of the table that is being indexed */ - int iIdxCur, /* Cursor of the index itself */ - WhereInfo *pWInfo /* Transform expressions in this WHERE clause */ +static SQLITE_NOINLINE void filterPullDown( + Parse *pParse, /* Parsing context */ + WhereInfo *pWInfo, /* Complete information about the WHERE clause */ + int iLevel, /* Which level of pWInfo->a[] should be coded */ + int addrNxt, /* Jump here to bypass inner loops */ + Bitmask notReady /* Loops that are not ready */ ){ - int iIdxCol; /* Column number of the index */ - ExprList *aColExpr; /* Expressions that are indexed */ - Walker w; - IdxExprTrans x; - aColExpr = pIdx->aColExpr; - if( aColExpr==0 ) return; /* Not an index on expressions */ - memset(&w, 0, sizeof(w)); - w.xExprCallback = whereIndexExprTransNode; - w.u.pIdxTrans = &x; - x.iTabCur = iTabCur; - x.iIdxCur = iIdxCur; - for(iIdxCol=0; iIdxColnExpr; iIdxCol++){ - if( pIdx->aiColumn[iIdxCol]!=XN_EXPR ) continue; - assert( aColExpr->a[iIdxCol].pExpr!=0 ); - x.iIdxCol = iIdxCol; - x.pIdxExpr = aColExpr->a[iIdxCol].pExpr; - sqlite3WalkExpr(&w, pWInfo->pWhere); - sqlite3WalkExprList(&w, pWInfo->pOrderBy); - sqlite3WalkExprList(&w, pWInfo->pResultSet); + while( ++iLevel < pWInfo->nLevel ){ + WhereLevel *pLevel = &pWInfo->a[iLevel]; + WhereLoop *pLoop = pLevel->pWLoop; + if( pLevel->regFilter==0 ) continue; + if( pLevel->pWLoop->nSkip ) continue; + /* ,--- Because sqlite3ConstructBloomFilter() has will not have set + ** vvvvv--' pLevel->regFilter if this were true. */ + if( NEVER(pLoop->prereq & notReady) ) continue; + assert( pLevel->addrBrk==0 ); + pLevel->addrBrk = addrNxt; + if( pLoop->wsFlags & WHERE_IPK ){ + WhereTerm *pTerm = pLoop->aLTerm[0]; + int regRowid; + assert( pTerm!=0 ); + assert( pTerm->pExpr!=0 ); + testcase( pTerm->wtFlags & TERM_VIRTUAL ); + regRowid = sqlite3GetTempReg(pParse); + regRowid = codeEqualityTerm(pParse, pTerm, pLevel, 0, 0, regRowid); + sqlite3VdbeAddOp2(pParse->pVdbe, OP_MustBeInt, regRowid, addrNxt); + VdbeCoverage(pParse->pVdbe); + sqlite3VdbeAddOp4Int(pParse->pVdbe, OP_Filter, pLevel->regFilter, + addrNxt, regRowid, 1); + VdbeCoverage(pParse->pVdbe); + }else{ + u16 nEq = pLoop->u.btree.nEq; + int r1; + char *zStartAff; + + assert( pLoop->wsFlags & WHERE_INDEXED ); + assert( (pLoop->wsFlags & WHERE_COLUMN_IN)==0 ); + r1 = codeAllEqualityTerms(pParse,pLevel,0,0,&zStartAff); + codeApplyAffinity(pParse, r1, nEq, zStartAff); + sqlite3DbFree(pParse->db, zStartAff); + sqlite3VdbeAddOp4Int(pParse->pVdbe, OP_Filter, pLevel->regFilter, + addrNxt, r1, nEq); + VdbeCoverage(pParse->pVdbe); + } + pLevel->regFilter = 0; + pLevel->addrBrk = 0; } } @@ -133550,23 +155932,22 @@ static void whereIndexExprTrans( ** implementation described by pWInfo. */ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( + Parse *pParse, /* Parsing context */ + Vdbe *v, /* Prepared statement under construction */ WhereInfo *pWInfo, /* Complete information about the WHERE clause */ int iLevel, /* Which level of pWInfo->a[] should be coded */ + WhereLevel *pLevel, /* The current level pointer */ Bitmask notReady /* Which tables are currently available */ ){ int j, k; /* Loop counters */ int iCur; /* The VDBE cursor for the table */ int addrNxt; /* Where to jump to continue with the next IN case */ - int omitTable; /* True if we use the index only */ int bRev; /* True if we need to scan in reverse order */ - WhereLevel *pLevel; /* The where level to be coded */ WhereLoop *pLoop; /* The WhereLoop object being coded */ WhereClause *pWC; /* Decomposition of the entire WHERE clause */ WhereTerm *pTerm; /* A WHERE clause term */ - Parse *pParse; /* Parsing context */ sqlite3 *db; /* Database connection */ - Vdbe *v; /* The prepared stmt under constructions */ - struct SrcList_item *pTabItem; /* FROM clause term being coded */ + SrcItem *pTabItem; /* FROM clause term being coded */ int addrBrk; /* Jump here to break out of the loop */ int addrHalt; /* addrBrk for the outermost loop */ int addrCont; /* Jump here to continue with next cycle */ @@ -133575,19 +155956,31 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( Index *pIdx = 0; /* Index used by loop (if any) */ int iLoop; /* Iteration of constraint generator loop */ - pParse = pWInfo->pParse; - v = pParse->pVdbe; pWC = &pWInfo->sWC; db = pParse->db; - pLevel = &pWInfo->a[iLevel]; pLoop = pLevel->pWLoop; pTabItem = &pWInfo->pTabList->a[pLevel->iFrom]; iCur = pTabItem->iCursor; pLevel->notReady = notReady & ~sqlite3WhereGetMask(&pWInfo->sMaskSet, iCur); bRev = (pWInfo->revMask>>iLevel)&1; - omitTable = (pLoop->wsFlags & WHERE_IDX_ONLY)!=0 - && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0; VdbeModuleComment((v, "Begin WHERE-loop%d: %s",iLevel,pTabItem->pTab->zName)); +#if WHERETRACE_ENABLED /* 0x4001 */ + if( sqlite3WhereTrace & 0x1 ){ + sqlite3DebugPrintf("Coding level %d of %d: notReady=%llx iFrom=%d\n", + iLevel, pWInfo->nLevel, (u64)notReady, pLevel->iFrom); + if( sqlite3WhereTrace & 0x1000 ){ + sqlite3WhereLoopPrint(pLoop, pWC); + } + } + if( (sqlite3WhereTrace & 0x4001)==0x4001 ){ + if( iLevel==0 ){ + sqlite3DebugPrintf("WHERE clause being coded:\n"); + sqlite3TreeViewExpr(0, pWInfo->pWhere, 0); + } + sqlite3DebugPrintf("All WHERE-clause terms before coding:\n"); + sqlite3WhereClausePrint(pWC); + } +#endif /* Create labels for the "break" and "continue" instructions ** for the current loop. Jump to addrBrk to break out of a loop. @@ -133599,14 +155992,14 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** there are no IN operators in the constraints, the "addrNxt" label ** is the same as "addrBrk". */ - addrBrk = pLevel->addrBrk = pLevel->addrNxt = sqlite3VdbeMakeLabel(v); - addrCont = pLevel->addrCont = sqlite3VdbeMakeLabel(v); + addrBrk = pLevel->addrBrk = pLevel->addrNxt = sqlite3VdbeMakeLabel(pParse); + addrCont = pLevel->addrCont = sqlite3VdbeMakeLabel(pParse); /* If this is the right table of a LEFT OUTER JOIN, allocate and ** initialize a memory cell that records if this table matches any ** row of the left table of the join. */ - assert( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE) + assert( (pWInfo->wctrlFlags & (WHERE_OR_SUBCLAUSE|WHERE_RIGHT_JOIN)) || pLevel->iFrom>0 || (pTabItem[0].fg.jointype & JT_LEFT)==0 ); if( pLevel->iFrom>0 && (pTabItem[0].fg.jointype & JT_LEFT)!=0 ){ @@ -133617,7 +156010,10 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( /* Compute a safe address to jump to if we discover that the table for ** this loop is empty and can never contribute content. */ - for(j=iLevel; j>0 && pWInfo->a[j].iLeftJoin==0; j--){} + for(j=iLevel; j>0; j--){ + if( pWInfo->a[j].iLeftJoin ) break; + if( pWInfo->a[j].pRJ ) break; + } addrHalt = pWInfo->a[j].addrBrk; /* Special case of a FROM clause subquery implemented as a co-routine */ @@ -133626,7 +156022,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); pLevel->p2 = sqlite3VdbeAddOp2(v, OP_Yield, regYield, addrBrk); VdbeCoverage(v); - VdbeComment((v, "next row of \"%s\"", pTabItem->pTab->zName)); + VdbeComment((v, "next row of %s", pTabItem->pTab->zName)); pLevel->op = OP_Goto; }else @@ -133638,9 +156034,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( int iReg; /* P3 Value for OP_VFilter */ int addrNotFound; int nConstraint = pLoop->nLTerm; - int iIn; /* Counter for IN constraints */ - sqlite3ExprCachePush(pParse); iReg = sqlite3GetTempRange(pParse, nConstraint+2); addrNotFound = pLevel->addrBrk; for(j=0; jaLTerm[j]; if( NEVER(pTerm==0) ) continue; if( pTerm->eOperator & WO_IN ){ - codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget); - addrNotFound = pLevel->addrNxt; + if( SMASKBIT32(j) & pLoop->u.vtab.mHandleIn ){ + int iTab = pParse->nTab++; + int iCache = ++pParse->nMem; + sqlite3CodeRhsOfIN(pParse, pTerm->pExpr, iTab); + sqlite3VdbeAddOp3(v, OP_VInitIn, iTab, iTarget, iCache); + }else{ + codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget); + addrNotFound = pLevel->addrNxt; + } }else{ Expr *pRight = pTerm->pExpr->pRight; codeExprOrVector(pParse, pRight, iTarget, 1); + if( pTerm->eMatchOp==SQLITE_INDEX_CONSTRAINT_OFFSET + && pLoop->u.vtab.bOmitOffset + ){ + assert( pTerm->eOperator==WO_AUX ); + assert( pWInfo->pSelect!=0 ); + assert( pWInfo->pSelect->iOffset>0 ); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pWInfo->pSelect->iOffset); + VdbeComment((v,"Zero OFFSET counter")); + } } } sqlite3VdbeAddOp2(v, OP_Integer, pLoop->u.vtab.idxNum, iReg); @@ -133662,50 +156072,74 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( pLoop->u.vtab.needFree ? P4_DYNAMIC : P4_STATIC); VdbeCoverage(v); pLoop->u.vtab.needFree = 0; + /* An OOM inside of AddOp4(OP_VFilter) instruction above might have freed + ** the u.vtab.idxStr. NULL it out to prevent a use-after-free */ + if( db->mallocFailed ) pLoop->u.vtab.idxStr = 0; pLevel->p1 = iCur; pLevel->op = pWInfo->eOnePass ? OP_Noop : OP_VNext; pLevel->p2 = sqlite3VdbeCurrentAddr(v); - iIn = pLevel->u.in.nIn; - for(j=nConstraint-1; j>=0; j--){ + assert( (pLoop->wsFlags & WHERE_MULTI_OR)==0 ); + + for(j=0; jaLTerm[j]; if( j<16 && (pLoop->u.vtab.omitMask>>j)&1 ){ disableTerm(pLevel, pTerm); - }else if( (pTerm->eOperator & WO_IN)!=0 ){ + continue; + } + if( (pTerm->eOperator & WO_IN)!=0 + && (SMASKBIT32(j) & pLoop->u.vtab.mHandleIn)==0 + && !db->mallocFailed + ){ Expr *pCompare; /* The comparison operator */ Expr *pRight; /* RHS of the comparison */ VdbeOp *pOp; /* Opcode to access the value of the IN constraint */ + int iIn; /* IN loop corresponding to the j-th constraint */ /* Reload the constraint value into reg[iReg+j+2]. The same value ** was loaded into the same register prior to the OP_VFilter, but ** the xFilter implementation might have changed the datatype or - ** encoding of the value in the register, so it *must* be reloaded. */ - assert( pLevel->u.in.aInLoop!=0 || db->mallocFailed ); - if( !db->mallocFailed ){ - assert( iIn>0 ); - pOp = sqlite3VdbeGetOp(v, pLevel->u.in.aInLoop[--iIn].addrInTop); - assert( pOp->opcode==OP_Column || pOp->opcode==OP_Rowid ); - assert( pOp->opcode!=OP_Column || pOp->p3==iReg+j+2 ); - assert( pOp->opcode!=OP_Rowid || pOp->p2==iReg+j+2 ); - testcase( pOp->opcode==OP_Rowid ); - sqlite3VdbeAddOp3(v, pOp->opcode, pOp->p1, pOp->p2, pOp->p3); + ** encoding of the value in the register, so it *must* be reloaded. + */ + for(iIn=0; ALWAYS(iInu.in.nIn); iIn++){ + pOp = sqlite3VdbeGetOp(v, pLevel->u.in.aInLoop[iIn].addrInTop); + if( (pOp->opcode==OP_Column && pOp->p3==iReg+j+2) + || (pOp->opcode==OP_Rowid && pOp->p2==iReg+j+2) + ){ + testcase( pOp->opcode==OP_Rowid ); + sqlite3VdbeAddOp3(v, pOp->opcode, pOp->p1, pOp->p2, pOp->p3); + break; + } } - /* Generate code that will continue to the next row if - ** the IN constraint is not satisfied */ + /* Generate code that will continue to the next row if + ** the IN constraint is not satisfied + */ pCompare = sqlite3PExpr(pParse, TK_EQ, 0, 0); - assert( pCompare!=0 || db->mallocFailed ); - if( pCompare ){ - pCompare->pLeft = pTerm->pExpr->pLeft; + if( !db->mallocFailed ){ + int iFld = pTerm->u.x.iField; + Expr *pLeft = pTerm->pExpr->pLeft; + assert( pLeft!=0 ); + if( iFld>0 ){ + assert( pLeft->op==TK_VECTOR ); + assert( ExprUseXList(pLeft) ); + assert( iFld<=pLeft->x.pList->nExpr ); + pCompare->pLeft = pLeft->x.pList->a[iFld-1].pExpr; + }else{ + pCompare->pLeft = pLeft; + } pCompare->pRight = pRight = sqlite3Expr(db, TK_REGISTER, 0); if( pRight ){ pRight->iTable = iReg+j+2; - sqlite3ExprIfFalse(pParse, pCompare, pLevel->addrCont, 0); + sqlite3ExprIfFalse( + pParse, pCompare, pLevel->addrCont, SQLITE_JUMPIFNULL + ); } pCompare->pLeft = 0; - sqlite3ExprDelete(db, pCompare); } + sqlite3ExprDelete(db, pCompare); } } + /* These registers need to be preserved in case there is an IN operator ** loop. So we could deallocate the registers here (and potentially ** reuse them later) if (pLoop->wsFlags & WHERE_IN_ABLE)==0. But it seems @@ -133713,7 +156147,6 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** ** sqlite3ReleaseTempRange(pParse, iReg, nConstraint+2); */ - sqlite3ExprCachePop(pParse); }else #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -133729,17 +156162,21 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( pTerm = pLoop->aLTerm[0]; assert( pTerm!=0 ); assert( pTerm->pExpr!=0 ); - assert( omitTable==0 ); testcase( pTerm->wtFlags & TERM_VIRTUAL ); iReleaseReg = ++pParse->nMem; iRowidReg = codeEqualityTerm(pParse, pTerm, pLevel, 0, bRev, iReleaseReg); if( iRowidReg!=iReleaseReg ) sqlite3ReleaseTempReg(pParse, iReleaseReg); addrNxt = pLevel->addrNxt; + if( pLevel->regFilter ){ + sqlite3VdbeAddOp2(v, OP_MustBeInt, iRowidReg, addrNxt); + VdbeCoverage(v); + sqlite3VdbeAddOp4Int(v, OP_Filter, pLevel->regFilter, addrNxt, + iRowidReg, 1); + VdbeCoverage(v); + filterPullDown(pParse, pWInfo, iLevel, addrNxt, notReady); + } sqlite3VdbeAddOp3(v, OP_SeekRowid, iCur, addrNxt, iRowidReg); VdbeCoverage(v); - sqlite3ExprCacheAffinityChange(pParse, iRowidReg, 1); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - VdbeComment((v, "pk")); pLevel->op = OP_Noop; }else if( (pLoop->wsFlags & WHERE_IPK)!=0 && (pLoop->wsFlags & WHERE_COLUMN_RANGE)!=0 @@ -133751,7 +156188,6 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( int memEndValue = 0; WhereTerm *pStart, *pEnd; - assert( omitTable==0 ); j = 0; pStart = pEnd = 0; if( pLoop->wsFlags & WHERE_BTM_LIMIT ) pStart = pLoop->aLTerm[j++]; @@ -133768,7 +156204,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( int r1, rTemp; /* Registers for holding the start boundary */ int op; /* Cursor seek operation */ - /* The following constant maps TK_xx codes into corresponding + /* The following constant maps TK_xx codes into corresponding ** seek opcodes. It depends on a particular ordering of TK_xx */ const u8 aMoveOp[] = { @@ -133779,7 +156215,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( }; assert( TK_LE==TK_GT+1 ); /* Make sure the ordering.. */ assert( TK_LT==TK_GT+2 ); /* ... of the TK_xx values... */ - assert( TK_GE==TK_GT+3 ); /* ... is correcct. */ + assert( TK_GE==TK_GT+3 ); /* ... is correct. */ assert( (pStart->wtFlags & TERM_VNULL)==0 ); testcase( pStart->wtFlags & TERM_VIRTUAL ); @@ -133809,7 +156245,6 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( VdbeCoverageIf(v, pX->op==TK_LE); VdbeCoverageIf(v, pX->op==TK_LT); VdbeCoverageIf(v, pX->op==TK_GE); - sqlite3ExprCacheAffinityChange(pParse, r1, 1); sqlite3ReleaseTempReg(pParse, rTemp); }else{ sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iCur, addrHalt); @@ -133825,8 +156260,8 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( testcase( pEnd->wtFlags & TERM_VIRTUAL ); memEndValue = ++pParse->nMem; codeExprOrVector(pParse, pX->pRight, memEndValue, 1); - if( 0==sqlite3ExprIsVector(pX->pRight) - && (pX->op==TK_LT || pX->op==TK_GT) + if( 0==sqlite3ExprIsVector(pX->pRight) + && (pX->op==TK_LT || pX->op==TK_GT) ){ testOp = bRev ? OP_Le : OP_Ge; }else{ @@ -133844,7 +156279,6 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( if( testOp!=OP_Noop ){ iRowidReg = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Rowid, iCur, iRowidReg); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); sqlite3VdbeAddOp3(v, testOp, memEndValue, addrBrk, iRowidReg); VdbeCoverageIf(v, testOp==OP_Le); VdbeCoverageIf(v, testOp==OP_Lt); @@ -133855,14 +156289,14 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( }else if( pLoop->wsFlags & WHERE_INDEXED ){ /* Case 4: A scan using an index. ** - ** The WHERE clause may contain zero or more equality + ** The WHERE clause may contain zero or more equality ** terms ("==" or "IN" operators) that refer to the N ** left-most columns of the index. It may also contain ** inequality constraints (>, <, >= or <=) on the indexed - ** column that immediately follows the N equalities. Only + ** column that immediately follows the N equalities. Only ** the right-most column can be an inequality - the rest must - ** use the "==" and "IN" operators. For example, if the - ** index is on (x,y,z), then the following clauses are all + ** use the "==" and "IN" operators. For example, if the + ** index is on (x,y,z), then the following clauses are all ** optimized: ** ** x=5 @@ -133883,7 +156317,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** This case is also used when there are no WHERE clause ** constraints but an index is selected anyway, in order ** to force the output order to conform to an ORDER BY. - */ + */ static const u8 aStartOp[] = { 0, 0, @@ -133917,40 +156351,23 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( char *zEndAff = 0; /* Affinity for end of range constraint */ u8 bSeekPastNull = 0; /* True to seek past initial nulls */ u8 bStopAtNull = 0; /* Add condition to terminate at NULLs */ + int omitTable; /* True if we use the index only */ + int regBignull = 0; /* big-null flag register */ + int addrSeekScan = 0; /* Opcode of the OP_SeekScan, if any */ pIdx = pLoop->u.btree.pIndex; iIdxCur = pLevel->iIdxCur; assert( nEq>=pLoop->nSkip ); - /* If this loop satisfies a sort order (pOrderBy) request that - ** was passed to this function to implement a "SELECT min(x) ..." - ** query, then the caller will only allow the loop to run for - ** a single iteration. This means that the first row returned - ** should not have a NULL value stored in 'x'. If column 'x' is - ** the first one after the nEq equality constraints in the index, - ** this requires some special handling. - */ - assert( pWInfo->pOrderBy==0 - || pWInfo->pOrderBy->nExpr==1 - || (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0 ); - if( (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)!=0 - && pWInfo->nOBSat>0 - && (pIdx->nKeyCol>nEq) - ){ - assert( pLoop->nSkip==0 ); - bSeekPastNull = 1; - nExtraReg = 1; - } - - /* Find any inequality constraint terms for the start and end - ** of the range. + /* Find any inequality constraint terms for the start and end + ** of the range. */ j = nEq; if( pLoop->wsFlags & WHERE_BTM_LIMIT ){ pRangeStart = pLoop->aLTerm[j++]; nExtraReg = MAX(nExtraReg, pLoop->u.btree.nBtm); /* Like optimization range constraints always occur in pairs */ - assert( (pRangeStart->wtFlags & TERM_LIKEOPT)==0 || + assert( (pRangeStart->wtFlags & TERM_LIKEOPT)==0 || (pLoop->wsFlags & WHERE_TOP_LIMIT)!=0 ); } if( pLoop->wsFlags & WHERE_TOP_LIMIT ){ @@ -133982,18 +156399,44 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( } assert( pRangeEnd==0 || (pRangeEnd->wtFlags & TERM_VNULL)==0 ); + /* If the WHERE_BIGNULL_SORT flag is set, then index column nEq uses + ** a non-default "big-null" sort (either ASC NULLS LAST or DESC NULLS + ** FIRST). In both cases separate ordered scans are made of those + ** index entries for which the column is null and for those for which + ** it is not. For an ASC sort, the non-NULL entries are scanned first. + ** For DESC, NULL entries are scanned first. + */ + if( (pLoop->wsFlags & (WHERE_TOP_LIMIT|WHERE_BTM_LIMIT))==0 + && (pLoop->wsFlags & WHERE_BIGNULL_SORT)!=0 + ){ + assert( bSeekPastNull==0 && nExtraReg==0 && nBtm==0 && nTop==0 ); + assert( pRangeEnd==0 && pRangeStart==0 ); + testcase( pLoop->nSkip>0 ); + nExtraReg = 1; + bSeekPastNull = 1; + pLevel->regBignull = regBignull = ++pParse->nMem; + if( pLevel->iLeftJoin ){ + sqlite3VdbeAddOp2(v, OP_Integer, 0, regBignull); + } + pLevel->addrBignull = sqlite3VdbeMakeLabel(pParse); + } + /* If we are doing a reverse order scan on an ascending index, or - ** a forward order scan on a descending index, interchange the + ** a forward order scan on a descending index, interchange the ** start and end terms (pRangeStart and pRangeEnd). */ - if( (nEqnKeyCol && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC)) - || (bRev && pIdx->nKeyCol==nEq) - ){ + if( (nEqnColumn && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC)) ){ SWAP(WhereTerm *, pRangeEnd, pRangeStart); SWAP(u8, bSeekPastNull, bStopAtNull); SWAP(u8, nBtm, nTop); } + if( iLevel>0 && (pLoop->wsFlags & WHERE_IN_SEEKSCAN)!=0 ){ + /* In case OP_SeekScan is used, ensure that the index cursor does not + ** point to a valid row for the first iteration of this loop. */ + sqlite3VdbeAddOp1(v, OP_NullRow, iIdxCur); + } + /* Generate code to evaluate all constraint terms using == or IN ** and store the values of those terms in an array of registers ** starting at regBase. @@ -134004,7 +156447,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( if( zStartAff && nTop ){ zEndAff = sqlite3DbStrDup(db, &zStartAff[nEq]); } - addrNxt = pLevel->addrNxt; + addrNxt = (regBignull ? pLevel->addrBignull : pLevel->addrNxt); testcase( pRangeStart && (pRangeStart->eOperator & WO_LE)!=0 ); testcase( pRangeStart && (pRangeStart->eOperator & WO_GE)!=0 ); @@ -134028,7 +156471,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( } if( zStartAff ){ updateRangeAffinityStr(pRight, nBtm, &zStartAff[nEq]); - } + } nConstraint += nBtm; testcase( pRangeStart->wtFlags & TERM_VIRTUAL ); if( sqlite3ExprIsVector(pRight)==0 ){ @@ -134038,10 +156481,14 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( } bSeekPastNull = 0; }else if( bSeekPastNull ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); - nConstraint++; startEq = 0; + sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); start_constraints = 1; + nConstraint++; + }else if( regBignull ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); + start_constraints = 1; + nConstraint++; } codeApplyAffinity(pParse, regBase, nConstraint - bSeekPastNull, zStartAff); if( pLoop->nSkip>0 && nConstraint==pLoop->nSkip ){ @@ -134049,8 +156496,38 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** above has already left the cursor sitting on the correct row, ** so no further seeking is needed */ }else{ + if( regBignull ){ + sqlite3VdbeAddOp2(v, OP_Integer, 1, regBignull); + VdbeComment((v, "NULL-scan pass ctr")); + } + if( pLevel->regFilter ){ + sqlite3VdbeAddOp4Int(v, OP_Filter, pLevel->regFilter, addrNxt, + regBase, nEq); + VdbeCoverage(v); + filterPullDown(pParse, pWInfo, iLevel, addrNxt, notReady); + } + op = aStartOp[(start_constraints<<2) + (startEq<<1) + bRev]; assert( op!=0 ); + if( (pLoop->wsFlags & WHERE_IN_SEEKSCAN)!=0 && op==OP_SeekGE ){ + assert( regBignull==0 ); + /* TUNING: The OP_SeekScan opcode seeks to reduce the number + ** of expensive seek operations by replacing a single seek with + ** 1 or more step operations. The question is, how many steps + ** should we try before giving up and going with a seek. The cost + ** of a seek is proportional to the logarithm of the of the number + ** of entries in the tree, so basing the number of steps to try + ** on the estimated number of rows in the btree seems like a good + ** guess. */ + addrSeekScan = sqlite3VdbeAddOp1(v, OP_SeekScan, + (pIdx->aiRowLogEst[0]+9)/10); + if( pRangeStart || pRangeEnd ){ + sqlite3VdbeChangeP5(v, 1); + sqlite3VdbeChangeP2(v, addrSeekScan, sqlite3VdbeCurrentAddr(v)+1); + addrSeekScan = 0; + } + VdbeCoverage(v); + } sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); VdbeCoverage(v); VdbeCoverageIf(v, op==OP_Rewind); testcase( op==OP_Rewind ); @@ -134059,15 +156536,33 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( VdbeCoverageIf(v, op==OP_SeekGE); testcase( op==OP_SeekGE ); VdbeCoverageIf(v, op==OP_SeekLE); testcase( op==OP_SeekLE ); VdbeCoverageIf(v, op==OP_SeekLT); testcase( op==OP_SeekLT ); + + assert( bSeekPastNull==0 || bStopAtNull==0 ); + if( regBignull ){ + assert( bSeekPastNull==1 || bStopAtNull==1 ); + assert( bSeekPastNull==!bStopAtNull ); + assert( bStopAtNull==startEq ); + sqlite3VdbeAddOp2(v, OP_Goto, 0, sqlite3VdbeCurrentAddr(v)+2); + op = aStartOp[(nConstraint>1)*4 + 2 + bRev]; + sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, + nConstraint-startEq); + VdbeCoverage(v); + VdbeCoverageIf(v, op==OP_Rewind); testcase( op==OP_Rewind ); + VdbeCoverageIf(v, op==OP_Last); testcase( op==OP_Last ); + VdbeCoverageIf(v, op==OP_SeekGE); testcase( op==OP_SeekGE ); + VdbeCoverageIf(v, op==OP_SeekLE); testcase( op==OP_SeekLE ); + assert( op==OP_Rewind || op==OP_Last || op==OP_SeekGE || op==OP_SeekLE); + } } /* Load the value for the inequality constraint at the end of the ** range (if any). */ nConstraint = nEq; + assert( pLevel->p2==0 ); if( pRangeEnd ){ Expr *pRight = pRangeEnd->pExpr->pRight; - sqlite3ExprCacheRemove(pParse, regBase+nEq, 1); + assert( addrSeekScan==0 ); codeExprOrVector(pParse, pRight, regBase+nEq, nTop); whereLikeOptimizationStringFixup(v, pLevel, pRangeEnd); if( (pRangeEnd->wtFlags & TERM_VNULL)==0 @@ -134091,66 +156586,91 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( endEq = 1; } }else if( bStopAtNull ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); - sqlite3ExprCacheRemove(pParse, regBase+nEq, 1); - endEq = 0; + if( regBignull==0 ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); + endEq = 0; + } nConstraint++; } - sqlite3DbFree(db, zStartAff); - sqlite3DbFree(db, zEndAff); + if( zStartAff ) sqlite3DbNNFreeNN(db, zStartAff); + if( zEndAff ) sqlite3DbNNFreeNN(db, zEndAff); /* Top of the loop body */ pLevel->p2 = sqlite3VdbeCurrentAddr(v); /* Check if the index cursor is past the end of the range. */ if( nConstraint ){ + if( regBignull ){ + /* Except, skip the end-of-range check while doing the NULL-scan */ + sqlite3VdbeAddOp2(v, OP_IfNot, regBignull, sqlite3VdbeCurrentAddr(v)+3); + VdbeComment((v, "If NULL-scan 2nd pass")); + VdbeCoverage(v); + } op = aEndOp[bRev*2 + endEq]; sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); testcase( op==OP_IdxGT ); VdbeCoverageIf(v, op==OP_IdxGT ); testcase( op==OP_IdxGE ); VdbeCoverageIf(v, op==OP_IdxGE ); testcase( op==OP_IdxLT ); VdbeCoverageIf(v, op==OP_IdxLT ); testcase( op==OP_IdxLE ); VdbeCoverageIf(v, op==OP_IdxLE ); + if( addrSeekScan ) sqlite3VdbeJumpHere(v, addrSeekScan); + } + if( regBignull ){ + /* During a NULL-scan, check to see if we have reached the end of + ** the NULLs */ + assert( bSeekPastNull==!bStopAtNull ); + assert( bSeekPastNull+bStopAtNull==1 ); + assert( nConstraint+bSeekPastNull>0 ); + sqlite3VdbeAddOp2(v, OP_If, regBignull, sqlite3VdbeCurrentAddr(v)+2); + VdbeComment((v, "If NULL-scan 1st pass")); + VdbeCoverage(v); + op = aEndOp[bRev*2 + bSeekPastNull]; + sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, + nConstraint+bSeekPastNull); + testcase( op==OP_IdxGT ); VdbeCoverageIf(v, op==OP_IdxGT ); + testcase( op==OP_IdxGE ); VdbeCoverageIf(v, op==OP_IdxGE ); + testcase( op==OP_IdxLT ); VdbeCoverageIf(v, op==OP_IdxLT ); + testcase( op==OP_IdxLE ); VdbeCoverageIf(v, op==OP_IdxLE ); + } + + if( (pLoop->wsFlags & WHERE_IN_EARLYOUT)!=0 ){ + sqlite3VdbeAddOp3(v, OP_SeekHit, iIdxCur, nEq, nEq); } /* Seek the table cursor, if required */ + omitTable = (pLoop->wsFlags & WHERE_IDX_ONLY)!=0 + && (pWInfo->wctrlFlags & (WHERE_OR_SUBCLAUSE|WHERE_RIGHT_JOIN))==0; if( omitTable ){ /* pIdx is a covering index. No need to access the main table. */ }else if( HasRowid(pIdx->pTable) ){ - if( (pWInfo->wctrlFlags & WHERE_SEEK_TABLE) || ( - (pWInfo->wctrlFlags & WHERE_SEEK_UNIQ_TABLE) - && (pWInfo->eOnePass==ONEPASS_SINGLE) - )){ - iRowidReg = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, iRowidReg); - VdbeCoverage(v); - }else{ - codeDeferredSeek(pWInfo, pIdx, iCur, iIdxCur); - } + codeDeferredSeek(pWInfo, pIdx, iCur, iIdxCur); }else if( iCur!=iIdxCur ){ Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable); iRowidReg = sqlite3GetTempRange(pParse, pPk->nKeyCol); for(j=0; jnKeyCol; j++){ - k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); + k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[j]); sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, iRowidReg+j); } sqlite3VdbeAddOp4Int(v, OP_NotFound, iCur, addrCont, iRowidReg, pPk->nKeyCol); VdbeCoverage(v); } - /* If pIdx is an index on one or more expressions, then look through - ** all the expressions in pWInfo and try to transform matching expressions - ** into reference to index columns. - ** - ** Do not do this for the RHS of a LEFT JOIN. This is because the - ** expression may be evaluated after OP_NullRow has been executed on - ** the cursor. In this case it is important to do the full evaluation, - ** as the result of the expression may not be NULL, even if all table - ** column values are. https://www.sqlite.org/src/info/7fa8049685b50b5a - */ if( pLevel->iLeftJoin==0 ){ - whereIndexExprTrans(pIdx, iCur, iIdxCur, pWInfo); + /* If a partial index is driving the loop, try to eliminate WHERE clause + ** terms from the query that must be true due to the WHERE clause of + ** the partial index. + ** + ** 2019-11-02 ticket 623eff57e76d45f6: This optimization does not work + ** for a LEFT JOIN. + */ + if( pIdx->pPartIdxWhere ){ + whereApplyPartialIndexConstraints(pIdx->pPartIdxWhere, iCur, pWC); + } + }else{ + testcase( pIdx->pPartIdxWhere ); + /* The following assert() is not a requirement, merely an observation: + ** The OR-optimization doesn't work for the right hand table of + ** a LEFT JOIN: */ + assert( (pWInfo->wctrlFlags & (WHERE_OR_SUBCLAUSE|WHERE_RIGHT_JOIN))==0 ); } /* Record the instruction used to terminate the loop. */ @@ -134224,11 +156744,10 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( int regReturn = ++pParse->nMem; /* Register used with OP_Gosub */ int regRowset = 0; /* Register for RowSet object */ int regRowid = 0; /* Register holding rowid */ - int iLoopBody = sqlite3VdbeMakeLabel(v); /* Start of loop body */ + int iLoopBody = sqlite3VdbeMakeLabel(pParse);/* Start of loop body */ int iRetInit; /* Address of regReturn init */ int untestedTerms = 0; /* Some terms not completely tested */ int ii; /* Loop counter */ - u16 wctrlFlags; /* Flags for sub-WHERE clause */ Expr *pAndExpr = 0; /* An ".. AND (...)" expression */ Table *pTab = pTabItem->pTab; @@ -134246,9 +156765,9 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( */ if( pWInfo->nLevel>1 ){ int nNotReady; /* The number of notReady tables */ - struct SrcList_item *origSrc; /* Original list of tables */ + SrcItem *origSrc; /* Original list of tables */ nNotReady = pWInfo->nLevel - iLevel - 1; - pOrTab = sqlite3StackAllocRaw(db, + pOrTab = sqlite3DbMallocRawNN(db, sizeof(*pOrTab)+ nNotReady*sizeof(pOrTab->a[0])); if( pOrTab==0 ) return notReady; pOrTab->nAlloc = (u8)(nNotReady + 1); @@ -134262,15 +156781,15 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( pOrTab = pWInfo->pTabList; } - /* Initialize the rowset register to contain NULL. An SQL NULL is + /* Initialize the rowset register to contain NULL. An SQL NULL is ** equivalent to an empty rowset. Or, create an ephemeral index ** capable of holding primary keys in the case of a WITHOUT ROWID. ** - ** Also initialize regReturn to contain the address of the instruction + ** Also initialize regReturn to contain the address of the instruction ** immediately following the OP_Return at the bottom of the loop. This ** is required in a few obscure LEFT JOIN cases where control jumps - ** over the top of the loop into the body of it. In this case the - ** correct response for the end-of-loop code (the OP_Return) is to + ** over the top of the loop into the body of it. In this case the + ** correct response for the end-of-loop code (the OP_Return) is to ** fall through to the next instruction, just as an OP_Next does if ** called on an uninitialized cursor. */ @@ -134289,18 +156808,32 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( iRetInit = sqlite3VdbeAddOp2(v, OP_Integer, 0, regReturn); /* If the original WHERE clause is z of the form: (x1 OR x2 OR ...) AND y - ** Then for every term xN, evaluate as the subexpression: xN AND z + ** Then for every term xN, evaluate as the subexpression: xN AND y ** That way, terms in y that are factored into the disjunction will ** be picked up by the recursive calls to sqlite3WhereBegin() below. ** ** Actually, each subexpression is converted to "xN AND w" where w is ** the "interesting" terms of z - terms that did not originate in the - ** ON or USING clause of a LEFT JOIN, and terms that are usable as + ** ON or USING clause of a LEFT JOIN, and terms that are usable as ** indices. ** ** This optimization also only applies if the (x1 OR x2 OR ...) term ** is not contained in the ON clause of a LEFT JOIN. ** See ticket http://www.sqlite.org/src/info/f2369304e4 + ** + ** 2022-02-04: Do not push down slices of a row-value comparison. + ** In other words, "w" or "y" may not be a slice of a vector. Otherwise, + ** the initialization of the right-hand operand of the vector comparison + ** might not occur, or might occur only in an OR branch that is not + ** taken. dbsqlfuzz 80a9fade844b4fb43564efc972bcb2c68270f5d1. + ** + ** 2022-03-03: Do not push down expressions that involve subqueries. + ** The subquery might get coded as a subroutine. Any table-references + ** in the subquery might be resolved to index-references for the index on + ** the OR branch in which the subroutine is coded. But if the subroutine + ** is invoked from a different OR branch that uses a different index, such + ** index-references will not work. tag-20220303a + ** https://sqlite.org/forum/forumpost/36937b197273d403 */ if( pWC->nTerm>1 ){ int iTerm; @@ -134309,14 +156842,22 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( if( &pWC->a[iTerm] == pTerm ) continue; testcase( pWC->a[iTerm].wtFlags & TERM_VIRTUAL ); testcase( pWC->a[iTerm].wtFlags & TERM_CODED ); - if( (pWC->a[iTerm].wtFlags & (TERM_VIRTUAL|TERM_CODED))!=0 ) continue; + testcase( pWC->a[iTerm].wtFlags & TERM_SLICE ); + if( (pWC->a[iTerm].wtFlags & (TERM_VIRTUAL|TERM_CODED|TERM_SLICE))!=0 ){ + continue; + } if( (pWC->a[iTerm].eOperator & WO_ALL)==0 ) continue; - testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO ); + if( ExprHasProperty(pExpr, EP_Subquery) ) continue; /* tag-20220303a */ pExpr = sqlite3ExprDup(db, pExpr, 0); - pAndExpr = sqlite3ExprAnd(db, pAndExpr, pExpr); + pAndExpr = sqlite3ExprAnd(pParse, pAndExpr, pExpr); } if( pAndExpr ){ - pAndExpr = sqlite3PExpr(pParse, TK_AND|TKFLG_DONTFOLD, 0, pAndExpr); + /* The extra 0x10000 bit on the opcode is masked off and does not + ** become part of the new Expr.op. However, it does make the + ** op==TK_AND comparison inside of sqlite3PExpr() false, and this + ** prevents sqlite3PExpr() from applying the AND short-circuit + ** optimization, which we do not want here. */ + pAndExpr = sqlite3PExpr(pParse, TK_AND|0x10000, 0, pAndExpr); } } @@ -134324,26 +156865,32 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** eliminating duplicates from other WHERE clauses, the action for each ** sub-WHERE clause is to to invoke the main loop body as a subroutine. */ - wctrlFlags = WHERE_OR_SUBCLAUSE | (pWInfo->wctrlFlags & WHERE_SEEK_TABLE); ExplainQueryPlan((pParse, 1, "MULTI-INDEX OR")); for(ii=0; iinTerm; ii++){ WhereTerm *pOrTerm = &pOrWc->a[ii]; if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){ WhereInfo *pSubWInfo; /* Info for single OR-term scan */ Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */ + Expr *pDelete; /* Local copy of OR clause term */ int jmp1 = 0; /* Address of jump operation */ - assert( (pTabItem[0].fg.jointype & JT_LEFT)==0 - || ExprHasProperty(pOrExpr, EP_FromJoin) - ); + testcase( (pTabItem[0].fg.jointype & JT_LEFT)!=0 + && !ExprHasProperty(pOrExpr, EP_OuterON) + ); /* See TH3 vtab25.400 and ticket 614b25314c766238 */ + pDelete = pOrExpr = sqlite3ExprDup(db, pOrExpr, 0); + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pDelete); + continue; + } if( pAndExpr ){ pAndExpr->pLeft = pOrExpr; pOrExpr = pAndExpr; } /* Loop through table entries that match term pOrTerm. */ - WHERETRACE(0xffff, ("Subplan for OR-clause:\n")); - pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0, - wctrlFlags, iCovCur); - assert( pSubWInfo || pParse->nErr || db->mallocFailed ); + ExplainQueryPlan((pParse, 1, "INDEX %d", ii+1)); + WHERETRACE(0xffffffff, ("Subplan for OR-clause:\n")); + pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0, 0, + WHERE_OR_SUBCLAUSE, iCovCur); + assert( pSubWInfo || pParse->nErr ); if( pSubWInfo ){ WhereLoop *pSubLoop; int addrExplain = sqlite3WhereExplainOneScan( @@ -134357,23 +156904,23 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** row will be skipped in subsequent sub-WHERE clauses. */ if( (pWInfo->wctrlFlags & WHERE_DUPLICATES_OK)==0 ){ - int r; int iSet = ((ii==pOrWc->nTerm-1)?-1:ii); if( HasRowid(pTab) ){ - r = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, regRowid, 0); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, -1, regRowid); jmp1 = sqlite3VdbeAddOp4Int(v, OP_RowSetTest, regRowset, 0, - r,iSet); + regRowid, iSet); VdbeCoverage(v); }else{ Index *pPk = sqlite3PrimaryKeyIndex(pTab); int nPk = pPk->nKeyCol; int iPk; + int r; /* Read the PK into an array of temp registers. */ r = sqlite3GetTempRange(pParse, nPk); for(iPk=0; iPkaiColumn[iPk]; - sqlite3ExprCodeGetColumnToReg(pParse, pTab, iCol, iCur, r+iPk); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, iCol,r+iPk); } /* Check if the temp table already contains this key. If so, @@ -134384,9 +156931,9 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** ** Use some of the same optimizations as OP_RowSetTest: If iSet ** is zero, assume that the key cannot already be present in - ** the temp table. And if iSet is -1, assume that there is no - ** need to insert the key into the temp table, as it will never - ** be tested for. */ + ** the temp table. And if iSet is -1, assume that there is no + ** need to insert the key into the temp table, as it will never + ** be tested for. */ if( iSet ){ jmp1 = sqlite3VdbeAddOp4Int(v, OP_Found, regRowset, 0, r, nPk); VdbeCoverage(v); @@ -134425,8 +156972,8 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** If the call to sqlite3WhereBegin() above resulted in a scan that ** uses an index, and this is either the first OR-connected term ** processed or the index is the same as that used by all previous - ** terms, set pCov to the candidate covering index. Otherwise, set - ** pCov to NULL to indicate that no candidate covering index will + ** terms, set pCov to the candidate covering index. Otherwise, set + ** pCov to NULL to indicate that no candidate covering index will ** be available. */ pSubLoop = pSubWInfo->a[0].pWLoop; @@ -134440,14 +156987,22 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( }else{ pCov = 0; } + if( sqlite3WhereUsesDeferredSeek(pSubWInfo) ){ + pWInfo->bDeferredSeek = 1; + } /* Finish the loop through table entries that match term pOrTerm. */ sqlite3WhereEnd(pSubWInfo); + ExplainQueryPlanPop(pParse); } + sqlite3ExprDelete(db, pDelete); } } ExplainQueryPlanPop(pParse); - pLevel->u.pCovidx = pCov; + assert( pLevel->pWLoop==pLoop ); + assert( (pLoop->wsFlags & WHERE_MULTI_OR)!=0 ); + assert( (pLoop->wsFlags & WHERE_IN_ABLE)==0 ); + pLevel->u.pCoveringIdx = pCov; if( pCov ) pLevel->iIdxCur = iCovCur; if( pAndExpr ){ pAndExpr->pLeft = 0; @@ -134457,7 +157012,15 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( sqlite3VdbeGoto(v, pLevel->addrBrk); sqlite3VdbeResolveLabel(v, iLoopBody); - if( pWInfo->nLevel>1 ) sqlite3StackFree(db, pOrTab); + /* Set the P2 operand of the OP_Return opcode that will end the current + ** loop to point to this spot, which is the top of the next containing + ** loop. The byte-code formatter will use that P2 value as a hint to + ** indent everything in between the this point and the final OP_Return. + ** See tag-20220407a in vdbe.c and shell.c */ + assert( pLevel->op==OP_Return ); + pLevel->p2 = sqlite3VdbeCurrentAddr(v); + + if( pWInfo->nLevel>1 ){ sqlite3DbFreeNN(db, pOrTab); } if( !untestedTerms ) disableTerm(pLevel, pTerm); }else #endif /* SQLITE_OMIT_OR_OPTIMIZATION */ @@ -134497,7 +157060,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** ** iLoop==1: Code only expressions that are entirely covered by pIdx. ** iLoop==2: Code remaining expressions that do not contain correlated - ** sub-queries. + ** sub-queries. ** iLoop==3: Code all remaining expressions. ** ** An effort is made to skip unnecessary iterations of the loop. @@ -134519,10 +157082,22 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( } pE = pTerm->pExpr; assert( pE!=0 ); - if( (pTabItem->fg.jointype&JT_LEFT) && !ExprHasProperty(pE,EP_FromJoin) ){ - continue; + if( pTabItem->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT) ){ + if( !ExprHasProperty(pE,EP_OuterON|EP_InnerON) ){ + /* Defer processing WHERE clause constraints until after outer + ** join processing. tag-20220513a */ + continue; + }else if( (pTabItem->fg.jointype & JT_LEFT)==JT_LEFT + && !ExprHasProperty(pE,EP_OuterON) ){ + continue; + }else{ + Bitmask m = sqlite3WhereGetMask(&pWInfo->sMaskSet, pE->w.iJoin); + if( m & pLevel->notReady ){ + /* An ON clause that is not ripe */ + continue; + } + } } - if( iLoop==1 && !sqlite3ExprCoveredByIndex(pE, pLevel->iTabCur, pIdx) ){ iNext = 2; continue; @@ -134544,15 +157119,20 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( u32 x = pLevel->iLikeRepCntr; if( x>0 ){ skipLikeAddr = sqlite3VdbeAddOp1(v, (x&1)?OP_IfNot:OP_If,(int)(x>>1)); + VdbeCoverageIf(v, (x&1)==1); + VdbeCoverageIf(v, (x&1)==0); } - VdbeCoverage(v); #endif } -#ifdef WHERETRACE_ENABLED /* 0xffff */ +#ifdef WHERETRACE_ENABLED /* 0xffffffff */ if( sqlite3WhereTrace ){ VdbeNoopComment((v, "WhereTerm[%d] (%p) priority=%d", pWC->nTerm-j, pTerm, iLoop)); } + if( sqlite3WhereTrace & 0x4000 ){ + sqlite3DebugPrintf("Coding auxiliary constraint:\n"); + sqlite3WhereTermPrint(pTerm, pWC->nTerm-j); + } #endif sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL); if( skipLikeAddr ) sqlite3VdbeJumpHere(v, skipLikeAddr); @@ -134569,23 +157149,30 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** then we cannot use the "t1.a=t2.b" constraint, but we can code ** the implied "t1.a=123" constraint. */ - for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){ + for(pTerm=pWC->a, j=pWC->nBase; j>0; j--, pTerm++){ Expr *pE, sEAlt; WhereTerm *pAlt; if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) continue; if( (pTerm->eOperator & WO_EQUIV)==0 ) continue; if( pTerm->leftCursor!=iCur ) continue; - if( pLevel->iLeftJoin ) continue; + if( pTabItem->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT) ) continue; pE = pTerm->pExpr; - assert( !ExprHasProperty(pE, EP_FromJoin) ); +#ifdef WHERETRACE_ENABLED /* 0x4001 */ + if( (sqlite3WhereTrace & 0x4001)==0x4001 ){ + sqlite3DebugPrintf("Coding transitive constraint:\n"); + sqlite3WhereTermPrint(pTerm, pWC->nTerm-j); + } +#endif + assert( !ExprHasProperty(pE, EP_OuterON) ); assert( (pTerm->prereqRight & pLevel->notReady)!=0 ); - pAlt = sqlite3WhereFindTerm(pWC, iCur, pTerm->u.leftColumn, notReady, + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + pAlt = sqlite3WhereFindTerm(pWC, iCur, pTerm->u.x.leftColumn, notReady, WO_EQ|WO_IN|WO_IS, 0); if( pAlt==0 ) continue; if( pAlt->wtFlags & (TERM_CODED) ) continue; - if( (pAlt->eOperator & WO_IN) - && (pAlt->pExpr->flags & EP_xIsSelect) + if( (pAlt->eOperator & WO_IN) + && ExprUseXSelect(pAlt->pExpr) && (pAlt->pExpr->x.pSelect->pEList->nExpr>1) ){ continue; @@ -134597,17 +157184,82 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( sEAlt = *pAlt->pExpr; sEAlt.pLeft = pE->pLeft; sqlite3ExprIfFalse(pParse, &sEAlt, addrCont, SQLITE_JUMPIFNULL); + pAlt->wtFlags |= TERM_CODED; + } + + /* For a RIGHT OUTER JOIN, record the fact that the current row has + ** been matched at least once. + */ + if( pLevel->pRJ ){ + Table *pTab; + int nPk; + int r; + int jmp1 = 0; + WhereRightJoin *pRJ = pLevel->pRJ; + + /* pTab is the right-hand table of the RIGHT JOIN. Generate code that + ** will record that the current row of that table has been matched at + ** least once. This is accomplished by storing the PK for the row in + ** both the iMatch index and the regBloom Bloom filter. + */ + pTab = pWInfo->pTabList->a[pLevel->iFrom].pTab; + if( HasRowid(pTab) ){ + r = sqlite3GetTempRange(pParse, 2); + sqlite3ExprCodeGetColumnOfTable(v, pTab, pLevel->iTabCur, -1, r+1); + nPk = 1; + }else{ + int iPk; + Index *pPk = sqlite3PrimaryKeyIndex(pTab); + nPk = pPk->nKeyCol; + r = sqlite3GetTempRange(pParse, nPk+1); + for(iPk=0; iPkaiColumn[iPk]; + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, iCol,r+1+iPk); + } + } + jmp1 = sqlite3VdbeAddOp4Int(v, OP_Found, pRJ->iMatch, 0, r+1, nPk); + VdbeCoverage(v); + VdbeComment((v, "match against %s", pTab->zName)); + sqlite3VdbeAddOp3(v, OP_MakeRecord, r+1, nPk, r); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, pRJ->iMatch, r, r+1, nPk); + sqlite3VdbeAddOp4Int(v, OP_FilterAdd, pRJ->regBloom, 0, r+1, nPk); + sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); + sqlite3VdbeJumpHere(v, jmp1); + sqlite3ReleaseTempRange(pParse, r, nPk+1); } /* For a LEFT OUTER JOIN, generate code that will record the fact that - ** at least one row of the right table has matched the left table. + ** at least one row of the right table has matched the left table. */ if( pLevel->iLeftJoin ){ pLevel->addrFirst = sqlite3VdbeCurrentAddr(v); sqlite3VdbeAddOp2(v, OP_Integer, 1, pLevel->iLeftJoin); VdbeComment((v, "record LEFT JOIN hit")); - sqlite3ExprCacheClear(pParse); - for(pTerm=pWC->a, j=0; jnTerm; j++, pTerm++){ + if( pLevel->pRJ==0 ){ + goto code_outer_join_constraints; /* WHERE clause constraints */ + } + } + + if( pLevel->pRJ ){ + /* Create a subroutine used to process all interior loops and code + ** of the RIGHT JOIN. During normal operation, the subroutine will + ** be in-line with the rest of the code. But at the end, a separate + ** loop will run that invokes this subroutine for unmatched rows + ** of pTab, with all tables to left begin set to NULL. + */ + WhereRightJoin *pRJ = pLevel->pRJ; + sqlite3VdbeAddOp2(v, OP_BeginSubrtn, 0, pRJ->regReturn); + pRJ->addrSubrtn = sqlite3VdbeCurrentAddr(v); + assert( pParse->withinRJSubrtn < 255 ); + pParse->withinRJSubrtn++; + + /* WHERE clause constraints must be deferred until after outer join + ** row elimination has completed, since WHERE clause constraints apply + ** to the results of the OUTER JOIN. The following loop generates the + ** appropriate WHERE clause constraint checks. tag-20220513a. + */ + code_outer_join_constraints: + for(pTerm=pWC->a, j=0; jnBase; j++, pTerm++){ testcase( pTerm->wtFlags & TERM_VIRTUAL ); testcase( pTerm->wtFlags & TERM_CODED ); if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; @@ -134615,15 +157267,117 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( assert( pWInfo->untestedTerms ); continue; } + if( pTabItem->fg.jointype & JT_LTORJ ) continue; assert( pTerm->pExpr ); sqlite3ExprIfFalse(pParse, pTerm->pExpr, addrCont, SQLITE_JUMPIFNULL); pTerm->wtFlags |= TERM_CODED; } } +#if WHERETRACE_ENABLED /* 0x4001 */ + if( sqlite3WhereTrace & 0x4000 ){ + sqlite3DebugPrintf("All WHERE-clause terms after coding level %d:\n", + iLevel); + sqlite3WhereClausePrint(pWC); + } + if( sqlite3WhereTrace & 0x1 ){ + sqlite3DebugPrintf("End Coding level %d: notReady=%llx\n", + iLevel, (u64)pLevel->notReady); + } +#endif return pLevel->notReady; } +/* +** Generate the code for the loop that finds all non-matched terms +** for a RIGHT JOIN. +*/ +SQLITE_PRIVATE SQLITE_NOINLINE void sqlite3WhereRightJoinLoop( + WhereInfo *pWInfo, + int iLevel, + WhereLevel *pLevel +){ + Parse *pParse = pWInfo->pParse; + Vdbe *v = pParse->pVdbe; + WhereRightJoin *pRJ = pLevel->pRJ; + Expr *pSubWhere = 0; + WhereClause *pWC = &pWInfo->sWC; + WhereInfo *pSubWInfo; + WhereLoop *pLoop = pLevel->pWLoop; + SrcItem *pTabItem = &pWInfo->pTabList->a[pLevel->iFrom]; + SrcList sFrom; + Bitmask mAll = 0; + int k; + + ExplainQueryPlan((pParse, 1, "RIGHT-JOIN %s", pTabItem->pTab->zName)); + sqlite3VdbeNoJumpsOutsideSubrtn(v, pRJ->addrSubrtn, pRJ->endSubrtn, + pRJ->regReturn); + for(k=0; ka[k].pWLoop->maskSelf; + sqlite3VdbeAddOp1(v, OP_NullRow, pWInfo->a[k].iTabCur); + iIdxCur = pWInfo->a[k].iIdxCur; + if( iIdxCur ){ + sqlite3VdbeAddOp1(v, OP_NullRow, iIdxCur); + } + } + if( (pTabItem->fg.jointype & JT_LTORJ)==0 ){ + mAll |= pLoop->maskSelf; + for(k=0; knTerm; k++){ + WhereTerm *pTerm = &pWC->a[k]; + if( (pTerm->wtFlags & (TERM_VIRTUAL|TERM_SLICE))!=0 + && pTerm->eOperator!=WO_ROWVAL + ){ + break; + } + if( pTerm->prereqAll & ~mAll ) continue; + if( ExprHasProperty(pTerm->pExpr, EP_OuterON|EP_InnerON) ) continue; + pSubWhere = sqlite3ExprAnd(pParse, pSubWhere, + sqlite3ExprDup(pParse->db, pTerm->pExpr, 0)); + } + } + sFrom.nSrc = 1; + sFrom.nAlloc = 1; + memcpy(&sFrom.a[0], pTabItem, sizeof(SrcItem)); + sFrom.a[0].fg.jointype = 0; + assert( pParse->withinRJSubrtn < 100 ); + pParse->withinRJSubrtn++; + pSubWInfo = sqlite3WhereBegin(pParse, &sFrom, pSubWhere, 0, 0, 0, + WHERE_RIGHT_JOIN, 0); + if( pSubWInfo ){ + int iCur = pLevel->iTabCur; + int r = ++pParse->nMem; + int nPk; + int jmp; + int addrCont = sqlite3WhereContinueLabel(pSubWInfo); + Table *pTab = pTabItem->pTab; + if( HasRowid(pTab) ){ + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, -1, r); + nPk = 1; + }else{ + int iPk; + Index *pPk = sqlite3PrimaryKeyIndex(pTab); + nPk = pPk->nKeyCol; + pParse->nMem += nPk - 1; + for(iPk=0; iPkaiColumn[iPk]; + sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, iCol,r+iPk); + } + } + jmp = sqlite3VdbeAddOp4Int(v, OP_Filter, pRJ->regBloom, 0, r, nPk); + VdbeCoverage(v); + sqlite3VdbeAddOp4Int(v, OP_Found, pRJ->iMatch, addrCont, r, nPk); + VdbeCoverage(v); + sqlite3VdbeJumpHere(v, jmp); + sqlite3VdbeAddOp2(v, OP_Gosub, pRJ->regReturn, pRJ->addrSubrtn); + sqlite3WhereEnd(pSubWInfo); + } + sqlite3ExprDelete(pParse->db, pSubWhere); + ExplainQueryPlanPop(pParse); + assert( pParse->withinRJSubrtn>0 ); + pParse->withinRJSubrtn--; +} + /************** End of wherecode.c *******************************************/ /************** Begin file whereexpr.c ***************************************/ /* @@ -134641,7 +157395,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( ** the WHERE clause of SQL statements. ** ** This file was originally part of where.c but was split out to improve -** readability and editabiliity. This file contains utility routines for +** readability and editability. This file contains utility routines for ** analyzing Expr objects in the WHERE clause. */ /* #include "sqliteInt.h" */ @@ -134692,7 +157446,7 @@ static int whereClauseInsert(WhereClause *pWC, Expr *p, u16 wtFlags){ if( pWC->nTerm>=pWC->nSlot ){ WhereTerm *pOld = pWC->a; sqlite3 *db = pWC->pWInfo->pParse->db; - pWC->a = sqlite3DbMallocRawNN(db, sizeof(pWC->a[0])*pWC->nSlot*2 ); + pWC->a = sqlite3WhereMalloc(pWC->pWInfo, sizeof(pWC->a[0])*pWC->nSlot*2 ); if( pWC->a==0 ){ if( wtFlags & TERM_DYNAMIC ){ sqlite3ExprDelete(db, p); @@ -134701,18 +157455,16 @@ static int whereClauseInsert(WhereClause *pWC, Expr *p, u16 wtFlags){ return 0; } memcpy(pWC->a, pOld, sizeof(pWC->a[0])*pWC->nTerm); - if( pOld!=pWC->aStatic ){ - sqlite3DbFree(db, pOld); - } - pWC->nSlot = sqlite3DbMallocSize(db, pWC->a)/sizeof(pWC->a[0]); + pWC->nSlot = pWC->nSlot*2; } pTerm = &pWC->a[idx = pWC->nTerm++]; + if( (wtFlags & TERM_VIRTUAL)==0 ) pWC->nBase = pWC->nTerm; if( p && ExprHasProperty(p, EP_Unlikely) ){ pTerm->truthProb = sqlite3LogEst(p->iTable) - 270; }else{ pTerm->truthProb = 1; } - pTerm->pExpr = sqlite3ExprSkipCollate(p); + pTerm->pExpr = sqlite3ExprSkipCollateAndLikely(p); pTerm->wtFlags = wtFlags; pTerm->pWC = pWC; pTerm->iParent = -1; @@ -134737,31 +157489,14 @@ static int allowedOp(int op){ /* ** Commute a comparison operator. Expressions of the form "X op Y" ** are converted into "Y op X". -** -** If left/right precedence rules come into play when determining the -** collating sequence, then COLLATE operators are adjusted to ensure -** that the collating sequence does not change. For example: -** "Y collate NOCASE op X" becomes "X op Y" because any collation sequence on -** the left hand side of a comparison overrides any collation sequence -** attached to the right. For the same reason the EP_Collate flag -** is not commuted. */ -static void exprCommute(Parse *pParse, Expr *pExpr){ - u16 expRight = (pExpr->pRight->flags & EP_Collate); - u16 expLeft = (pExpr->pLeft->flags & EP_Collate); - assert( allowedOp(pExpr->op) && pExpr->op!=TK_IN ); - if( expRight==expLeft ){ - /* Either X and Y both have COLLATE operator or neither do */ - if( expRight ){ - /* Both X and Y have COLLATE operators. Make sure X is always - ** used by clearing the EP_Collate flag from Y. */ - pExpr->pRight->flags &= ~EP_Collate; - }else if( sqlite3ExprCollSeq(pParse, pExpr->pLeft)!=0 ){ - /* Neither X nor Y have COLLATE operators, but X has a non-default - ** collating sequence. So add the EP_Collate marker on X to cause - ** it to be searched first. */ - pExpr->pLeft->flags |= EP_Collate; - } +static u16 exprCommute(Parse *pParse, Expr *pExpr){ + if( pExpr->pLeft->op==TK_VECTOR + || pExpr->pRight->op==TK_VECTOR + || sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, pExpr->pRight) != + sqlite3BinaryCompareCollSeq(pParse, pExpr->pRight, pExpr->pLeft) + ){ + pExpr->flags ^= EP_Commuted; } SWAP(Expr*,pExpr->pRight,pExpr->pLeft); if( pExpr->op>=TK_GT ){ @@ -134772,6 +157507,7 @@ static void exprCommute(Parse *pParse, Expr *pExpr){ assert( pExpr->op>=TK_GT && pExpr->op<=TK_GE ); pExpr->op = ((pExpr->op-TK_GT)^2)+TK_GT; } + return 0; } /* @@ -134822,23 +157558,24 @@ static int isLikeOrGlob( int *pisComplete, /* True if the only wildcard is % in the last character */ int *pnoCase /* True if uppercase is equivalent to lowercase */ ){ - const u8 *z = 0; /* String on RHS of LIKE operator */ + const u8 *z = 0; /* String on RHS of LIKE operator */ Expr *pRight, *pLeft; /* Right and left size of LIKE operator */ ExprList *pList; /* List of operands to the LIKE operator */ - int c; /* One character in z[] */ + u8 c; /* One character in z[] */ int cnt; /* Number of non-wildcard prefix characters */ - char wc[4]; /* Wildcard characters */ + u8 wc[4]; /* Wildcard characters */ sqlite3 *db = pParse->db; /* Database connection */ sqlite3_value *pVal = 0; int op; /* Opcode of pRight */ int rc; /* Result code to return */ - if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){ + if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, (char*)wc) ){ return 0; } #ifdef SQLITE_EBCDIC if( *pnoCase ) return 0; #endif + assert( ExprUseXList(pExpr) ); pList = pExpr->x.pList; pLeft = pList->a[1].pExpr; @@ -134854,27 +157591,11 @@ static int isLikeOrGlob( sqlite3VdbeSetVarmask(pParse->pVdbe, iCol); assert( pRight->op==TK_VARIABLE || pRight->op==TK_REGISTER ); }else if( op==TK_STRING ){ - z = (u8*)pRight->u.zToken; + assert( !ExprHasProperty(pRight, EP_IntValue) ); + z = (u8*)pRight->u.zToken; } if( z ){ - /* If the RHS begins with a digit or a minus sign, then the LHS must - ** be an ordinary column (not a virtual table column) with TEXT affinity. - ** Otherwise the LHS might be numeric and "lhs >= rhs" would be false - ** even though "lhs LIKE rhs" is true. But if the RHS does not start - ** with a digit or '-', then "lhs LIKE rhs" will always be false if - ** the LHS is numeric and so the optimization still works. - */ - if( sqlite3Isdigit(z[0]) || z[0]=='-' ){ - if( pLeft->op!=TK_COLUMN - || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT - || IsVirtual(pLeft->pTab) /* Value might be numeric */ - ){ - sqlite3ValueFree(pVal); - return 0; - } - } - /* Count the number of prefix characters prior to the first wildcard */ cnt = 0; while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){ @@ -134884,11 +157605,13 @@ static int isLikeOrGlob( /* The optimization is possible only if (1) the pattern does not begin ** with a wildcard and if (2) the non-wildcard prefix does not end with - ** an (illegal 0xff) character. The second condition is necessary so + ** an (illegal 0xff) character, or (3) the pattern does not consist of + ** a single escape character. The second condition is necessary so ** that we can increment the prefix key to find an upper bound for the - ** range search. - */ - if( cnt!=0 && 255!=(u8)z[cnt-1] ){ + ** range search. The third is because the caller assumes that the pattern + ** consists of at least one character after all escapes have been + ** removed. */ + if( (cnt>1 || (cnt>0 && z[0]!=wc[3])) && 255!=(u8)z[cnt-1] ){ Expr *pPrefix; /* A "complete" match if the pattern ends with "*" or "%" */ @@ -134898,13 +157621,54 @@ static int isLikeOrGlob( pPrefix = sqlite3Expr(db, TK_STRING, (char*)z); if( pPrefix ){ int iFrom, iTo; - char *zNew = pPrefix->u.zToken; + char *zNew; + assert( !ExprHasProperty(pPrefix, EP_IntValue) ); + zNew = pPrefix->u.zToken; zNew[cnt] = 0; for(iFrom=iTo=0; iFrom0 ); + + /* If the LHS is not an ordinary column with TEXT affinity, then the + ** pattern prefix boundaries (both the start and end boundaries) must + ** not look like a number. Otherwise the pattern might be treated as + ** a number, which will invalidate the LIKE optimization. + ** + ** Getting this right has been a persistent source of bugs in the + ** LIKE optimization. See, for example: + ** 2018-09-10 https://sqlite.org/src/info/c94369cae9b561b1 + ** 2019-05-02 https://sqlite.org/src/info/b043a54c3de54b28 + ** 2019-06-10 https://sqlite.org/src/info/fd76310a5e843e07 + ** 2019-06-14 https://sqlite.org/src/info/ce8717f0885af975 + ** 2019-09-03 https://sqlite.org/src/info/0f0428096f17252a + */ + if( pLeft->op!=TK_COLUMN + || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT + || (ALWAYS( ExprUseYTab(pLeft) ) + && ALWAYS(pLeft->y.pTab) + && IsVirtual(pLeft->y.pTab)) /* Might be numeric */ + ){ + int isNum; + double rDummy; + isNum = sqlite3AtoF(zNew, &rDummy, iTo, SQLITE_UTF8); + if( isNum<=0 ){ + if( iTo==1 && zNew[0]=='-' ){ + isNum = +1; + }else{ + zNew[iTo-1]++; + isNum = sqlite3AtoF(zNew, &rDummy, iTo, SQLITE_UTF8); + zNew[iTo-1]--; + } + } + if( isNum>0 ){ + sqlite3ExprDelete(db, pPrefix); + sqlite3ValueFree(pVal); + return 0; + } + } } *ppPrefix = pPrefix; @@ -134913,13 +157677,14 @@ static int isLikeOrGlob( if( op==TK_VARIABLE ){ Vdbe *v = pParse->pVdbe; sqlite3VdbeSetVarmask(v, pRight->iColumn); + assert( !ExprHasProperty(pRight, EP_IntValue) ); if( *pisComplete && pRight->u.zToken[1] ){ /* If the rhs of the LIKE expression is a variable, and the current ** value of the variable means there is no need to invoke the LIKE ** function, then no OP_Variable will be added to the program. ** This causes problems for the sqlite3_bind_parameter_name() ** API. To work around them, add a dummy OP_Variable here. - */ + */ int r1 = sqlite3GetTempReg(pParse); sqlite3ExprCodeTarget(pParse, pRight, r1); sqlite3VdbeChangeP3(v, sqlite3VdbeCurrentAddr(v)-1, 0); @@ -134956,7 +157721,7 @@ static int isLikeOrGlob( ** 9. column IS NOT NULL SQLITE_INDEX_CONSTRAINT_ISNOTNULL ** ** In every case, "column" must be a column of a virtual table. If there -** is a match, set *ppLeft to the "column" expression, set *ppRight to the +** is a match, set *ppLeft to the "column" expression, set *ppRight to the ** "expr" expression (even though in forms (6) and (8) the column is on the ** right and the expression is on the left). Also set *peOp2 to the ** appropriate virtual table operator. The return value is 1 or 2 if there @@ -134966,6 +157731,7 @@ static int isLikeOrGlob( ** If the expression matches none of the patterns above, return 0. */ static int isAuxiliaryVtabOperator( + sqlite3 *db, /* Parsing context */ Expr *pExpr, /* Test this expression */ unsigned char *peOp2, /* OUT: 0 for MATCH, or else an op2 value */ Expr **ppLeft, /* Column expression to left of MATCH/op2 */ @@ -134985,30 +157751,77 @@ static int isAuxiliaryVtabOperator( Expr *pCol; /* Column reference */ int i; + assert( ExprUseXList(pExpr) ); pList = pExpr->x.pList; if( pList==0 || pList->nExpr!=2 ){ return 0; } + + /* Built-in operators MATCH, GLOB, LIKE, and REGEXP attach to a + ** virtual table on their second argument, which is the same as + ** the left-hand side operand in their in-fix form. + ** + ** vtab_column MATCH expression + ** MATCH(expression,vtab_column) + */ pCol = pList->a[1].pExpr; - if( pCol->op!=TK_COLUMN || !IsVirtual(pCol->pTab) ){ - return 0; + assert( pCol->op!=TK_COLUMN || (ExprUseYTab(pCol) && pCol->y.pTab!=0) ); + if( ExprIsVtab(pCol) ){ + for(i=0; iu.zToken, aOp[i].zOp)==0 ){ + *peOp2 = aOp[i].eOp2; + *ppRight = pList->a[0].pExpr; + *ppLeft = pCol; + return 1; + } + } } - for(i=0; iu.zToken, aOp[i].zOp)==0 ){ - *peOp2 = aOp[i].eOp2; - *ppRight = pList->a[0].pExpr; - *ppLeft = pCol; - return 1; + + /* We can also match against the first column of overloaded + ** functions where xFindFunction returns a value of at least + ** SQLITE_INDEX_CONSTRAINT_FUNCTION. + ** + ** OVERLOADED(vtab_column,expression) + ** + ** Historically, xFindFunction expected to see lower-case function + ** names. But for this use case, xFindFunction is expected to deal + ** with function names in an arbitrary case. + */ + pCol = pList->a[0].pExpr; + assert( pCol->op!=TK_COLUMN || ExprUseYTab(pCol) ); + assert( pCol->op!=TK_COLUMN || (ExprUseYTab(pCol) && pCol->y.pTab!=0) ); + if( ExprIsVtab(pCol) ){ + sqlite3_vtab *pVtab; + sqlite3_module *pMod; + void (*xNotUsed)(sqlite3_context*,int,sqlite3_value**); + void *pNotUsed; + pVtab = sqlite3GetVTable(db, pCol->y.pTab)->pVtab; + assert( pVtab!=0 ); + assert( pVtab->pModule!=0 ); + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + pMod = (sqlite3_module *)pVtab->pModule; + if( pMod->xFindFunction!=0 ){ + i = pMod->xFindFunction(pVtab,2, pExpr->u.zToken, &xNotUsed, &pNotUsed); + if( i>=SQLITE_INDEX_CONSTRAINT_FUNCTION ){ + *peOp2 = i; + *ppRight = pList->a[1].pExpr; + *ppLeft = pCol; + return 1; + } } } }else if( pExpr->op==TK_NE || pExpr->op==TK_ISNOT || pExpr->op==TK_NOTNULL ){ int res = 0; Expr *pLeft = pExpr->pLeft; Expr *pRight = pExpr->pRight; - if( pLeft->op==TK_COLUMN && IsVirtual(pLeft->pTab) ){ + assert( pLeft->op!=TK_COLUMN || (ExprUseYTab(pLeft) && pLeft->y.pTab!=0) ); + if( ExprIsVtab(pLeft) ){ res++; } - if( pRight && pRight->op==TK_COLUMN && IsVirtual(pRight->pTab) ){ + assert( pRight==0 || pRight->op!=TK_COLUMN + || (ExprUseYTab(pRight) && pRight->y.pTab!=0) ); + if( pRight && ExprIsVtab(pRight) ){ res++; SWAP(Expr*, pLeft, pRight); } @@ -135028,9 +157841,9 @@ static int isAuxiliaryVtabOperator( ** a join, then transfer the appropriate markings over to derived. */ static void transferJoinMarkings(Expr *pDerived, Expr *pBase){ - if( pDerived ){ - pDerived->flags |= pBase->flags & EP_FromJoin; - pDerived->iRightJoinTable = pBase->iRightJoinTable; + if( pDerived && ExprHasProperty(pBase, EP_OuterON|EP_InnerON) ){ + pDerived->flags |= pBase->flags & (EP_OuterON|EP_InnerON); + pDerived->w.iJoin = pBase->w.iJoin; } } @@ -135076,7 +157889,7 @@ static WhereTerm *whereNthSubterm(WhereTerm *pTerm, int N){ ** ** The following is NOT generated: ** -** xy --> x!=y +** xy --> x!=y */ static void whereCombineDisjuncts( SrcList *pSrc, /* the FROM clause */ @@ -135090,6 +157903,7 @@ static void whereCombineDisjuncts( int op; /* Operator for the combined expression */ int idxNew; /* Index in pWC of the next virtual term */ + if( (pOne->wtFlags | pTwo->wtFlags) & TERM_VNULL ) return; if( (pOne->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return; if( (pTwo->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return; if( (eOp & (WO_EQ|WO_LT|WO_LE))!=eOp @@ -135173,10 +157987,10 @@ static void whereCombineDisjuncts( ** WhereTerm.u.pOrInfo->indexable |= the cursor number for table T ** ** A subterm is "indexable" if it is of the form -** "T.C " where C is any column of table T and +** "T.C " where C is any column of table T and ** is one of "=", "<", "<=", ">", ">=", "IS NULL", or "IN". ** A subterm is also indexable if it is an AND of two or more -** subsubterms at least one of which is indexable. Indexable AND +** subsubterms at least one of which is indexable. Indexable AND ** subterms have their eOperator set to WO_AND and they have ** u.pAndInfo set to a dynamically allocated WhereAndTerm object. ** @@ -135258,6 +158072,7 @@ static void exprAnalyzeOrTerm( pOrTerm->u.pAndInfo = pAndInfo; pOrTerm->wtFlags |= TERM_ANDINFO; pOrTerm->eOperator = WO_AND; + pOrTerm->leftCursor = -1; pAndWC = &pAndInfo->wc; memset(pAndWC->aStatic, 0, sizeof(pAndWC->aStatic)); sqlite3WhereClauseInit(pAndWC, pWC->pWInfo); @@ -135267,7 +158082,7 @@ static void exprAnalyzeOrTerm( if( !db->mallocFailed ){ for(j=0, pAndTerm=pAndWC->a; jnTerm; j++, pAndTerm++){ assert( pAndTerm->pExpr ); - if( allowedOp(pAndTerm->pExpr->op) + if( allowedOp(pAndTerm->pExpr->op) || pAndTerm->eOperator==WO_AUX ){ b |= sqlite3WhereGetMask(&pWInfo->sMaskSet, pAndTerm->leftCursor); @@ -135300,7 +158115,11 @@ static void exprAnalyzeOrTerm( ** empty. */ pOrInfo->indexable = indexable; - pTerm->eOperator = indexable==0 ? 0 : WO_OR; + pTerm->eOperator = WO_OR; + pTerm->leftCursor = -1; + if( indexable ){ + pWC->hasOr = 1; + } /* For a two-way OR, attempt to implementation case 2. */ @@ -135350,10 +158169,11 @@ static void exprAnalyzeOrTerm( ** and column is found but leave okToChngToIN false if not found. */ for(j=0; j<2 && !okToChngToIN; j++){ + Expr *pLeft = 0; pOrTerm = pOrWc->a; for(i=pOrWc->nTerm-1; i>=0; i--, pOrTerm++){ assert( pOrTerm->eOperator & WO_EQ ); - pOrTerm->wtFlags &= ~TERM_OR_OK; + pOrTerm->wtFlags &= ~TERM_OK; if( pOrTerm->leftCursor==iCursor ){ /* This is the 2-bit case and we are on the second iteration and ** current term is from the first iteration. So skip this term. */ @@ -135364,15 +158184,17 @@ static void exprAnalyzeOrTerm( pOrTerm->leftCursor))==0 ){ /* This term must be of the form t1.a==t2.b where t2 is in the ** chngToIN set but t1 is not. This term will be either preceded - ** or follwed by an inverted copy (t2.b==t1.a). Skip this term + ** or followed by an inverted copy (t2.b==t1.a). Skip this term ** and use its inversion. */ testcase( pOrTerm->wtFlags & TERM_COPIED ); testcase( pOrTerm->wtFlags & TERM_VIRTUAL ); assert( pOrTerm->wtFlags & (TERM_COPIED|TERM_VIRTUAL) ); continue; } - iColumn = pOrTerm->u.leftColumn; + assert( (pOrTerm->eOperator & (WO_OR|WO_AND))==0 ); + iColumn = pOrTerm->u.x.leftColumn; iCursor = pOrTerm->leftCursor; + pLeft = pOrTerm->pExpr->pLeft; break; } if( i<0 ){ @@ -135390,9 +158212,12 @@ static void exprAnalyzeOrTerm( okToChngToIN = 1; for(; i>=0 && okToChngToIN; i--, pOrTerm++){ assert( pOrTerm->eOperator & WO_EQ ); + assert( (pOrTerm->eOperator & (WO_OR|WO_AND))==0 ); if( pOrTerm->leftCursor!=iCursor ){ - pOrTerm->wtFlags &= ~TERM_OR_OK; - }else if( pOrTerm->u.leftColumn!=iColumn ){ + pOrTerm->wtFlags &= ~TERM_OK; + }else if( pOrTerm->u.x.leftColumn!=iColumn || (iColumn==XN_EXPR + && sqlite3ExprCompare(pParse, pOrTerm->pExpr->pLeft, pLeft, -1) + )){ okToChngToIN = 0; }else{ int affLeft, affRight; @@ -135405,14 +158230,14 @@ static void exprAnalyzeOrTerm( if( affRight!=0 && affRight!=affLeft ){ okToChngToIN = 0; }else{ - pOrTerm->wtFlags |= TERM_OR_OK; + pOrTerm->wtFlags |= TERM_OK; } } } } /* At this point, okToChngToIN is true if original pTerm satisfies - ** case 1. In that case, construct a new virtual term that is + ** case 1. In that case, construct a new virtual term that is ** pTerm converted into an IN operator. */ if( okToChngToIN ){ @@ -135422,10 +158247,11 @@ static void exprAnalyzeOrTerm( Expr *pNew; /* The complete IN operator */ for(i=pOrWc->nTerm-1, pOrTerm=pOrWc->a; i>=0; i--, pOrTerm++){ - if( (pOrTerm->wtFlags & TERM_OR_OK)==0 ) continue; + if( (pOrTerm->wtFlags & TERM_OK)==0 ) continue; assert( pOrTerm->eOperator & WO_EQ ); + assert( (pOrTerm->eOperator & (WO_OR|WO_AND))==0 ); assert( pOrTerm->leftCursor==iCursor ); - assert( pOrTerm->u.leftColumn==iColumn ); + assert( pOrTerm->u.x.leftColumn==iColumn ); pDup = sqlite3ExprDup(db, pOrTerm->pExpr->pRight, 0); pList = sqlite3ExprListAppend(pWInfo->pParse, pList, pDup); pLeft = pOrTerm->pExpr->pLeft; @@ -135436,12 +158262,12 @@ static void exprAnalyzeOrTerm( if( pNew ){ int idxNew; transferJoinMarkings(pNew, pExpr); - assert( !ExprHasProperty(pNew, EP_xIsSelect) ); + assert( ExprUseXList(pNew) ); pNew->x.pList = pList; idxNew = whereClauseInsert(pWC, pNew, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew==0 ); exprAnalyze(pSrc, pWC, idxNew); - pTerm = &pWC->a[idxTerm]; + /* pTerm = &pWC->a[idxTerm]; // would be needed if pTerm where reused */ markTermAsChild(pWC, idxNew, idxTerm); }else{ sqlite3ExprListDelete(db, pList); @@ -135471,7 +158297,7 @@ static int termIsEquivalence(Parse *pParse, Expr *pExpr){ CollSeq *pColl; if( !OptimizationEnabled(pParse->db, SQLITE_Transitive) ) return 0; if( pExpr->op!=TK_EQ && pExpr->op!=TK_IS ) return 0; - if( ExprHasProperty(pExpr, EP_FromJoin) ) return 0; + if( ExprHasProperty(pExpr, EP_OuterON) ) return 0; aff1 = sqlite3ExprAffinity(pExpr->pLeft); aff2 = sqlite3ExprAffinity(pExpr->pRight); if( aff1!=aff2 @@ -135479,8 +158305,8 @@ static int termIsEquivalence(Parse *pParse, Expr *pExpr){ ){ return 0; } - pColl = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, pExpr->pRight); - if( pColl==0 || sqlite3StrICmp(pColl->zName, "BINARY")==0 ) return 1; + pColl = sqlite3ExprCompareCollSeq(pParse, pExpr); + if( sqlite3IsBinary(pColl) ) return 1; return sqlite3ExprCollSeqMatch(pParse, pExpr->pLeft, pExpr->pRight); } @@ -135502,7 +158328,9 @@ static Bitmask exprSelectUsage(WhereMaskSet *pMaskSet, Select *pS){ int i; for(i=0; inSrc; i++){ mask |= exprSelectUsage(pMaskSet, pSrc->a[i].pSelect); - mask |= sqlite3WhereExprUsage(pMaskSet, pSrc->a[i].pOn); + if( pSrc->a[i].fg.isUsing==0 ){ + mask |= sqlite3WhereExprUsage(pMaskSet, pSrc->a[i].u3.pOn); + } if( pSrc->a[i].fg.isTabFunc ){ mask |= sqlite3WhereExprListUsage(pMaskSet, pSrc->a[i].u1.pFuncArg); } @@ -135528,42 +158356,48 @@ static Bitmask exprSelectUsage(WhereMaskSet *pMaskSet, Select *pS){ */ static SQLITE_NOINLINE int exprMightBeIndexed2( SrcList *pFrom, /* The FROM clause */ - Bitmask mPrereq, /* Bitmask of FROM clause terms referenced by pExpr */ int *aiCurCol, /* Write the referenced table cursor and column here */ - Expr *pExpr /* An operand of a comparison operator */ + Expr *pExpr, /* An operand of a comparison operator */ + int j /* Start looking with the j-th pFrom entry */ ){ Index *pIdx; int i; int iCur; - for(i=0; mPrereq>1; i++, mPrereq>>=1){} - iCur = pFrom->a[i].iCursor; - for(pIdx=pFrom->a[i].pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->aColExpr==0 ) continue; - for(i=0; inKeyCol; i++){ - if( pIdx->aiColumn[i]!=XN_EXPR ) continue; - if( sqlite3ExprCompareSkip(pExpr, pIdx->aColExpr->a[i].pExpr, iCur)==0 ){ - aiCurCol[0] = iCur; - aiCurCol[1] = XN_EXPR; - return 1; + do{ + iCur = pFrom->a[j].iCursor; + for(pIdx=pFrom->a[j].pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + if( pIdx->aColExpr==0 ) continue; + for(i=0; inKeyCol; i++){ + if( pIdx->aiColumn[i]!=XN_EXPR ) continue; + assert( pIdx->bHasExpr ); + if( sqlite3ExprCompareSkip(pExpr,pIdx->aColExpr->a[i].pExpr,iCur)==0 + && pExpr->op!=TK_STRING + ){ + aiCurCol[0] = iCur; + aiCurCol[1] = XN_EXPR; + return 1; + } } } - } + }while( ++j < pFrom->nSrc ); return 0; } static int exprMightBeIndexed( SrcList *pFrom, /* The FROM clause */ - Bitmask mPrereq, /* Bitmask of FROM clause terms referenced by pExpr */ int *aiCurCol, /* Write the referenced table cursor & column here */ Expr *pExpr, /* An operand of a comparison operator */ int op /* The specific comparison operator */ ){ - /* If this expression is a vector to the left or right of a - ** inequality constraint (>, <, >= or <=), perform the processing + int i; + + /* If this expression is a vector to the left or right of a + ** inequality constraint (>, <, >= or <=), perform the processing ** on the first element of the vector. */ assert( TK_GT+1==TK_LE && TK_GT+2==TK_LT && TK_GT+3==TK_GE ); assert( TK_ISop==TK_VECTOR && (op>=TK_GT && ALWAYS(op<=TK_GE)) ){ + assert( ExprUseXList(pExpr) ); pExpr = pExpr->x.pList->a[0].pExpr; } @@ -135572,11 +158406,19 @@ static int exprMightBeIndexed( aiCurCol[1] = pExpr->iColumn; return 1; } - if( mPrereq==0 ) return 0; /* No table references */ - if( (mPrereq&(mPrereq-1))!=0 ) return 0; /* Refs more than one table */ - return exprMightBeIndexed2(pFrom,mPrereq,aiCurCol,pExpr); + + for(i=0; inSrc; i++){ + Index *pIdx; + for(pIdx=pFrom->a[i].pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + if( pIdx->aColExpr ){ + return exprMightBeIndexed2(pFrom,aiCurCol,pExpr,i); + } + } + } + return 0; } + /* ** The input to this routine is an WhereTerm structure with only the ** "pExpr" field filled in. The job of this routine is to analyze the @@ -135604,8 +158446,8 @@ static void exprAnalyze( WhereTerm *pTerm; /* The term to be analyzed */ WhereMaskSet *pMaskSet; /* Set of table index masks */ Expr *pExpr; /* The expression to be analyzed */ - Bitmask prereqLeft; /* Prerequesites of the pExpr->pLeft */ - Bitmask prereqAll; /* Prerequesites of pExpr */ + Bitmask prereqLeft; /* Prerequisites of the pExpr->pLeft */ + Bitmask prereqAll; /* Prerequisites of pExpr */ Bitmask extraRight = 0; /* Extra dependencies on LEFT JOIN */ Expr *pStr1 = 0; /* RHS of LIKE/GLOB operator */ int isComplete = 0; /* RHS of LIKE/GLOB ends with wildcard */ @@ -135619,36 +158461,67 @@ static void exprAnalyze( if( db->mallocFailed ){ return; } + assert( pWC->nTerm > idxTerm ); pTerm = &pWC->a[idxTerm]; pMaskSet = &pWInfo->sMaskSet; pExpr = pTerm->pExpr; + assert( pExpr!=0 ); /* Because malloc() has not failed */ assert( pExpr->op!=TK_AS && pExpr->op!=TK_COLLATE ); + pMaskSet->bVarSelect = 0; prereqLeft = sqlite3WhereExprUsage(pMaskSet, pExpr->pLeft); op = pExpr->op; if( op==TK_IN ){ assert( pExpr->pRight==0 ); if( sqlite3ExprCheckIN(pParse, pExpr) ) return; - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ pTerm->prereqRight = exprSelectUsage(pMaskSet, pExpr->x.pSelect); }else{ pTerm->prereqRight = sqlite3WhereExprListUsage(pMaskSet, pExpr->x.pList); } - }else if( op==TK_ISNULL ){ - pTerm->prereqRight = 0; + prereqAll = prereqLeft | pTerm->prereqRight; }else{ pTerm->prereqRight = sqlite3WhereExprUsage(pMaskSet, pExpr->pRight); + if( pExpr->pLeft==0 + || ExprHasProperty(pExpr, EP_xIsSelect|EP_IfNullRow) + || pExpr->x.pList!=0 + ){ + prereqAll = sqlite3WhereExprUsageNN(pMaskSet, pExpr); + }else{ + prereqAll = prereqLeft | pTerm->prereqRight; + } } - pMaskSet->bVarSelect = 0; - prereqAll = sqlite3WhereExprUsage(pMaskSet, pExpr); if( pMaskSet->bVarSelect ) pTerm->wtFlags |= TERM_VARSELECT; - if( ExprHasProperty(pExpr, EP_FromJoin) ){ - Bitmask x = sqlite3WhereGetMask(pMaskSet, pExpr->iRightJoinTable); - prereqAll |= x; - extraRight = x-1; /* ON clause terms may not be used with an index - ** on left table of a LEFT JOIN. Ticket #3015 */ - if( (prereqAll>>1)>=x ){ - sqlite3ErrorMsg(pParse, "ON clause references tables to its right"); - return; + +#ifdef SQLITE_DEBUG + if( prereqAll!=sqlite3WhereExprUsageNN(pMaskSet, pExpr) ){ + printf("\n*** Incorrect prereqAll computed for:\n"); + sqlite3TreeViewExpr(0,pExpr,0); + assert( 0 ); + } +#endif + + if( ExprHasProperty(pExpr, EP_OuterON|EP_InnerON) ){ + Bitmask x = sqlite3WhereGetMask(pMaskSet, pExpr->w.iJoin); + if( ExprHasProperty(pExpr, EP_OuterON) ){ + prereqAll |= x; + extraRight = x-1; /* ON clause terms may not be used with an index + ** on left table of a LEFT JOIN. Ticket #3015 */ + if( (prereqAll>>1)>=x ){ + sqlite3ErrorMsg(pParse, "ON clause references tables to its right"); + return; + } + }else if( (prereqAll>>1)>=x ){ + /* The ON clause of an INNER JOIN references a table to its right. + ** Most other SQL database engines raise an error. But SQLite versions + ** 3.0 through 3.38 just put the ON clause constraint into the WHERE + ** clause and carried on. Beginning with 3.39, raise an error only + ** if there is a RIGHT or FULL JOIN in the query. This makes SQLite + ** more like other systems, and also preserves legacy. */ + if( ALWAYS(pSrc->nSrc>0) && (pSrc->a[0].fg.jointype & JT_LTORJ)!=0 ){ + sqlite3ErrorMsg(pParse, "ON clause references tables to its right"); + return; + } + ExprClearProperty(pExpr, EP_InnerON); } } pTerm->prereqAll = prereqAll; @@ -135661,25 +158534,28 @@ static void exprAnalyze( Expr *pRight = sqlite3ExprSkipCollate(pExpr->pRight); u16 opMask = (pTerm->prereqRight & prereqLeft)==0 ? WO_ALL : WO_EQUIV; - if( pTerm->iField>0 ){ + if( pTerm->u.x.iField>0 ){ assert( op==TK_IN ); assert( pLeft->op==TK_VECTOR ); - pLeft = pLeft->x.pList->a[pTerm->iField-1].pExpr; + assert( ExprUseXList(pLeft) ); + pLeft = pLeft->x.pList->a[pTerm->u.x.iField-1].pExpr; } - if( exprMightBeIndexed(pSrc, prereqLeft, aiCurCol, pLeft, op) ){ + if( exprMightBeIndexed(pSrc, aiCurCol, pLeft, op) ){ pTerm->leftCursor = aiCurCol[0]; - pTerm->u.leftColumn = aiCurCol[1]; + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + pTerm->u.x.leftColumn = aiCurCol[1]; pTerm->eOperator = operatorMask(op) & opMask; } if( op==TK_IS ) pTerm->wtFlags |= TERM_IS; - if( pRight - && exprMightBeIndexed(pSrc, pTerm->prereqRight, aiCurCol, pRight, op) + if( pRight + && exprMightBeIndexed(pSrc, aiCurCol, pRight, op) + && !ExprHasProperty(pRight, EP_FixedCol) ){ WhereTerm *pNew; Expr *pDup; u16 eExtraOp = 0; /* Extra bits for pNew->eOperator */ - assert( pTerm->iField==0 ); + assert( pTerm->u.x.iField==0 ); if( pTerm->leftCursor>=0 ){ int idxNew; pDup = sqlite3ExprDup(db, pExpr, 0); @@ -135703,13 +158579,25 @@ static void exprAnalyze( pDup = pExpr; pNew = pTerm; } - exprCommute(pParse, pDup); + pNew->wtFlags |= exprCommute(pParse, pDup); pNew->leftCursor = aiCurCol[0]; - pNew->u.leftColumn = aiCurCol[1]; + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + pNew->u.x.leftColumn = aiCurCol[1]; testcase( (prereqLeft | extraRight) != prereqLeft ); pNew->prereqRight = prereqLeft | extraRight; pNew->prereqAll = prereqAll; pNew->eOperator = (operatorMask(pDup->op) + eExtraOp) & opMask; + }else + if( op==TK_ISNULL + && !ExprHasProperty(pExpr,EP_OuterON) + && 0==sqlite3ExprCanBeNull(pLeft) + ){ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + pExpr->op = TK_TRUEFALSE; /* See tag-20230504-1 */ + pExpr->u.zToken = "false"; + ExprSetProperty(pExpr, EP_IsFalse); + pTerm->prereqAll = 0; + pTerm->eOperator = 0; } } @@ -135730,15 +158618,17 @@ static void exprAnalyze( ** BETWEEN term is skipped. */ else if( pExpr->op==TK_BETWEEN && pWC->op==TK_AND ){ - ExprList *pList = pExpr->x.pList; + ExprList *pList; int i; static const u8 ops[] = {TK_GE, TK_LE}; + assert( ExprUseXList(pExpr) ); + pList = pExpr->x.pList; assert( pList!=0 ); assert( pList->nExpr==2 ); for(i=0; i<2; i++){ Expr *pNewExpr; int idxNew; - pNewExpr = sqlite3PExpr(pParse, ops[i], + pNewExpr = sqlite3PExpr(pParse, ops[i], sqlite3ExprDup(db, pExpr->pLeft, 0), sqlite3ExprDup(db, pList->a[i].pExpr, 0)); transferJoinMarkings(pNewExpr, pExpr); @@ -135761,6 +158651,42 @@ static void exprAnalyze( pTerm = &pWC->a[idxTerm]; } #endif /* SQLITE_OMIT_OR_OPTIMIZATION */ + /* The form "x IS NOT NULL" can sometimes be evaluated more efficiently + ** as "x>NULL" if x is not an INTEGER PRIMARY KEY. So construct a + ** virtual term of that form. + ** + ** The virtual term must be tagged with TERM_VNULL. + */ + else if( pExpr->op==TK_NOTNULL ){ + if( pExpr->pLeft->op==TK_COLUMN + && pExpr->pLeft->iColumn>=0 + && !ExprHasProperty(pExpr, EP_OuterON) + ){ + Expr *pNewExpr; + Expr *pLeft = pExpr->pLeft; + int idxNew; + WhereTerm *pNewTerm; + + pNewExpr = sqlite3PExpr(pParse, TK_GT, + sqlite3ExprDup(db, pLeft, 0), + sqlite3ExprAlloc(db, TK_NULL, 0, 0)); + + idxNew = whereClauseInsert(pWC, pNewExpr, + TERM_VIRTUAL|TERM_DYNAMIC|TERM_VNULL); + if( idxNew ){ + pNewTerm = &pWC->a[idxNew]; + pNewTerm->prereqRight = 0; + pNewTerm->leftCursor = pLeft->iTable; + pNewTerm->u.x.leftColumn = pLeft->iColumn; + pNewTerm->eOperator = WO_GT; + markTermAsChild(pWC, idxNew, idxTerm); + pTerm = &pWC->a[idxTerm]; + pTerm->wtFlags |= TERM_COPIED; + pNewTerm->prereqAll = pTerm->prereqAll; + } + } + } + #ifndef SQLITE_OMIT_LIKE_OPTIMIZATION /* Add constraints to reduce the search space on a LIKE or GLOB @@ -135776,7 +158702,8 @@ static void exprAnalyze( ** bound is made all lowercase so that the bounds also work when comparing ** BLOBs. */ - if( pWC->op==TK_AND + else if( pExpr->op==TK_FUNCTION + && pWC->op==TK_AND && isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase) ){ Expr *pLeft; /* LHS of LIKE/GLOB operator */ @@ -135788,8 +158715,12 @@ static void exprAnalyze( const char *zCollSeqName; /* Name of collating sequence */ const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC; + assert( ExprUseXList(pExpr) ); pLeft = pExpr->x.pList->a[1].pExpr; pStr2 = sqlite3ExprDup(db, pStr1, 0); + assert( pStr1==0 || !ExprHasProperty(pStr1, EP_IntValue) ); + assert( pStr2==0 || !ExprHasProperty(pStr2, EP_IntValue) ); + /* Convert the lower bound to upper-case and the upper bound to ** lower-case (upper-case is less than lower-case in ASCII) so that @@ -135812,7 +158743,7 @@ static void exprAnalyze( if( noCase ){ /* The point is to increment the last character before the first ** wildcard. But if we increment '@', that will push it into the - ** alphabetic range where case conversions will mess up the + ** alphabetic range where case conversions will mess up the ** inequality. To avoid this, make sure to also run the full ** LIKE on all candidate expressions by clearing the isComplete flag */ @@ -135821,7 +158752,7 @@ static void exprAnalyze( } *pC = c + 1; } - zCollSeqName = noCase ? "NOCASE" : "BINARY"; + zCollSeqName = noCase ? "NOCASE" : sqlite3StrBINARY; pNewExpr1 = sqlite3ExprDup(db, pLeft, 0); pNewExpr1 = sqlite3PExpr(pParse, TK_GE, sqlite3ExprAddCollateString(pParse,pNewExpr1,zCollSeqName), @@ -135829,7 +158760,6 @@ static void exprAnalyze( transferJoinMarkings(pNewExpr1, pExpr); idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags); testcase( idxNew1==0 ); - exprAnalyze(pSrc, pWC, idxNew1); pNewExpr2 = sqlite3ExprDup(db, pLeft, 0); pNewExpr2 = sqlite3PExpr(pParse, TK_LT, sqlite3ExprAddCollateString(pParse,pNewExpr2,zCollSeqName), @@ -135837,6 +158767,7 @@ static void exprAnalyze( transferJoinMarkings(pNewExpr2, pExpr); idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags); testcase( idxNew2==0 ); + exprAnalyze(pSrc, pWC, idxNew1); exprAnalyze(pSrc, pWC, idxNew2); pTerm = &pWC->a[idxTerm]; if( isComplete ){ @@ -135846,6 +158777,69 @@ static void exprAnalyze( } #endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */ + /* If there is a vector == or IS term - e.g. "(a, b) == (?, ?)" - create + ** new terms for each component comparison - "a = ?" and "b = ?". The + ** new terms completely replace the original vector comparison, which is + ** no longer used. + ** + ** This is only required if at least one side of the comparison operation + ** is not a sub-select. + ** + ** tag-20220128a + */ + if( (pExpr->op==TK_EQ || pExpr->op==TK_IS) + && (nLeft = sqlite3ExprVectorSize(pExpr->pLeft))>1 + && sqlite3ExprVectorSize(pExpr->pRight)==nLeft + && ( (pExpr->pLeft->flags & EP_xIsSelect)==0 + || (pExpr->pRight->flags & EP_xIsSelect)==0) + && pWC->op==TK_AND + ){ + int i; + for(i=0; ipLeft, i, nLeft); + Expr *pRight = sqlite3ExprForVectorField(pParse, pExpr->pRight, i, nLeft); + + pNew = sqlite3PExpr(pParse, pExpr->op, pLeft, pRight); + transferJoinMarkings(pNew, pExpr); + idxNew = whereClauseInsert(pWC, pNew, TERM_DYNAMIC|TERM_SLICE); + exprAnalyze(pSrc, pWC, idxNew); + } + pTerm = &pWC->a[idxTerm]; + pTerm->wtFlags |= TERM_CODED|TERM_VIRTUAL; /* Disable the original */ + pTerm->eOperator = WO_ROWVAL; + } + + /* If there is a vector IN term - e.g. "(a, b) IN (SELECT ...)" - create + ** a virtual term for each vector component. The expression object + ** used by each such virtual term is pExpr (the full vector IN(...) + ** expression). The WhereTerm.u.x.iField variable identifies the index within + ** the vector on the LHS that the virtual term represents. + ** + ** This only works if the RHS is a simple SELECT (not a compound) that does + ** not use window functions. + */ + else if( pExpr->op==TK_IN + && pTerm->u.x.iField==0 + && pExpr->pLeft->op==TK_VECTOR + && ALWAYS( ExprUseXSelect(pExpr) ) + && (pExpr->x.pSelect->pPrior==0 || (pExpr->x.pSelect->selFlags & SF_Values)) +#ifndef SQLITE_OMIT_WINDOWFUNC + && pExpr->x.pSelect->pWin==0 +#endif + && pWC->op==TK_AND + ){ + int i; + for(i=0; ipLeft); i++){ + int idxNew; + idxNew = whereClauseInsert(pWC, pExpr, TERM_VIRTUAL|TERM_SLICE); + pWC->a[idxNew].u.x.iField = i+1; + exprAnalyze(pSrc, pWC, idxNew); + markTermAsChild(pWC, idxNew, idxTerm); + } + } + #ifndef SQLITE_OMIT_VIRTUALTABLE /* Add a WO_AUX auxiliary term to the constraint set if the ** current expression is of the form "column OP expr" where OP @@ -135856,9 +158850,9 @@ static void exprAnalyze( ** virtual tables. The native query optimizer does not attempt ** to do anything with MATCH functions. */ - if( pWC->op==TK_AND ){ + else if( pWC->op==TK_AND ){ Expr *pRight = 0, *pLeft = 0; - int res = isAuxiliaryVtabOperator(pExpr, &eOp2, &pLeft, &pRight); + int res = isAuxiliaryVtabOperator(db, pExpr, &eOp2, &pLeft, &pRight); while( res-- > 0 ){ int idxNew; WhereTerm *pNewTerm; @@ -135868,17 +158862,18 @@ static void exprAnalyze( prereqColumn = sqlite3WhereExprUsage(pMaskSet, pLeft); if( (prereqExpr & prereqColumn)==0 ){ Expr *pNewExpr; - pNewExpr = sqlite3PExpr(pParse, TK_MATCH, + pNewExpr = sqlite3PExpr(pParse, TK_MATCH, 0, sqlite3ExprDup(db, pRight, 0)); - if( ExprHasProperty(pExpr, EP_FromJoin) && pNewExpr ){ - ExprSetProperty(pNewExpr, EP_FromJoin); + if( ExprHasProperty(pExpr, EP_OuterON) && pNewExpr ){ + ExprSetProperty(pNewExpr, EP_OuterON); + pNewExpr->w.iJoin = pExpr->w.iJoin; } idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew==0 ); pNewTerm = &pWC->a[idxNew]; pNewTerm->prereqRight = prereqExpr; pNewTerm->leftCursor = pLeft->iTable; - pNewTerm->u.leftColumn = pLeft->iColumn; + pNewTerm->u.x.leftColumn = pLeft->iColumn; pNewTerm->eOperator = WO_AUX; pNewTerm->eMatchOp = eOp2; markTermAsChild(pWC, idxNew, idxTerm); @@ -135891,97 +158886,6 @@ static void exprAnalyze( } #endif /* SQLITE_OMIT_VIRTUALTABLE */ - /* If there is a vector == or IS term - e.g. "(a, b) == (?, ?)" - create - ** new terms for each component comparison - "a = ?" and "b = ?". The - ** new terms completely replace the original vector comparison, which is - ** no longer used. - ** - ** This is only required if at least one side of the comparison operation - ** is not a sub-select. */ - if( pWC->op==TK_AND - && (pExpr->op==TK_EQ || pExpr->op==TK_IS) - && (nLeft = sqlite3ExprVectorSize(pExpr->pLeft))>1 - && sqlite3ExprVectorSize(pExpr->pRight)==nLeft - && ( (pExpr->pLeft->flags & EP_xIsSelect)==0 - || (pExpr->pRight->flags & EP_xIsSelect)==0) - ){ - int i; - for(i=0; ipLeft, i); - Expr *pRight = sqlite3ExprForVectorField(pParse, pExpr->pRight, i); - - pNew = sqlite3PExpr(pParse, pExpr->op, pLeft, pRight); - transferJoinMarkings(pNew, pExpr); - idxNew = whereClauseInsert(pWC, pNew, TERM_DYNAMIC); - exprAnalyze(pSrc, pWC, idxNew); - } - pTerm = &pWC->a[idxTerm]; - pTerm->wtFlags |= TERM_CODED|TERM_VIRTUAL; /* Disable the original */ - pTerm->eOperator = 0; - } - - /* If there is a vector IN term - e.g. "(a, b) IN (SELECT ...)" - create - ** a virtual term for each vector component. The expression object - ** used by each such virtual term is pExpr (the full vector IN(...) - ** expression). The WhereTerm.iField variable identifies the index within - ** the vector on the LHS that the virtual term represents. - ** - ** This only works if the RHS is a simple SELECT, not a compound - */ - if( pWC->op==TK_AND && pExpr->op==TK_IN && pTerm->iField==0 - && pExpr->pLeft->op==TK_VECTOR - && pExpr->x.pSelect->pPrior==0 - ){ - int i; - for(i=0; ipLeft); i++){ - int idxNew; - idxNew = whereClauseInsert(pWC, pExpr, TERM_VIRTUAL); - pWC->a[idxNew].iField = i+1; - exprAnalyze(pSrc, pWC, idxNew); - markTermAsChild(pWC, idxNew, idxTerm); - } - } - -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - /* When sqlite_stat3 histogram data is available an operator of the - ** form "x IS NOT NULL" can sometimes be evaluated more efficiently - ** as "x>NULL" if x is not an INTEGER PRIMARY KEY. So construct a - ** virtual term of that form. - ** - ** Note that the virtual term must be tagged with TERM_VNULL. - */ - if( pExpr->op==TK_NOTNULL - && pExpr->pLeft->op==TK_COLUMN - && pExpr->pLeft->iColumn>=0 - && OptimizationEnabled(db, SQLITE_Stat34) - ){ - Expr *pNewExpr; - Expr *pLeft = pExpr->pLeft; - int idxNew; - WhereTerm *pNewTerm; - - pNewExpr = sqlite3PExpr(pParse, TK_GT, - sqlite3ExprDup(db, pLeft, 0), - sqlite3ExprAlloc(db, TK_NULL, 0, 0)); - - idxNew = whereClauseInsert(pWC, pNewExpr, - TERM_VIRTUAL|TERM_DYNAMIC|TERM_VNULL); - if( idxNew ){ - pNewTerm = &pWC->a[idxNew]; - pNewTerm->prereqRight = 0; - pNewTerm->leftCursor = pLeft->iTable; - pNewTerm->u.leftColumn = pLeft->iColumn; - pNewTerm->eOperator = WO_GT; - markTermAsChild(pWC, idxNew, idxTerm); - pTerm = &pWC->a[idxTerm]; - pTerm->wtFlags |= TERM_COPIED; - pNewTerm->prereqAll = pTerm->prereqAll; - } - } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ - /* Prevent ON clause terms of a LEFT JOIN from being used to drive ** an index for tables to the left of the join. */ @@ -136013,8 +158917,9 @@ static void exprAnalyze( ** all terms of the WHERE clause. */ SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause *pWC, Expr *pExpr, u8 op){ - Expr *pE2 = sqlite3ExprSkipCollate(pExpr); + Expr *pE2 = sqlite3ExprSkipCollateAndLikely(pExpr); pWC->op = op; + assert( pE2!=0 || pExpr==0 ); if( pE2==0 ) return; if( pE2->op!=op ){ whereClauseInsert(pWC, pExpr, 0); @@ -136024,6 +158929,120 @@ SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause *pWC, Expr *pExpr, u8 op){ } } +/* +** Add either a LIMIT (if eMatchOp==SQLITE_INDEX_CONSTRAINT_LIMIT) or +** OFFSET (if eMatchOp==SQLITE_INDEX_CONSTRAINT_OFFSET) term to the +** where-clause passed as the first argument. The value for the term +** is found in register iReg. +** +** In the common case where the value is a simple integer +** (example: "LIMIT 5 OFFSET 10") then the expression codes as a +** TK_INTEGER so that it will be available to sqlite3_vtab_rhs_value(). +** If not, then it codes as a TK_REGISTER expression. +*/ +static void whereAddLimitExpr( + WhereClause *pWC, /* Add the constraint to this WHERE clause */ + int iReg, /* Register that will hold value of the limit/offset */ + Expr *pExpr, /* Expression that defines the limit/offset */ + int iCsr, /* Cursor to which the constraint applies */ + int eMatchOp /* SQLITE_INDEX_CONSTRAINT_LIMIT or _OFFSET */ +){ + Parse *pParse = pWC->pWInfo->pParse; + sqlite3 *db = pParse->db; + Expr *pNew; + int iVal = 0; + + if( sqlite3ExprIsInteger(pExpr, &iVal) && iVal>=0 ){ + Expr *pVal = sqlite3Expr(db, TK_INTEGER, 0); + if( pVal==0 ) return; + ExprSetProperty(pVal, EP_IntValue); + pVal->u.iValue = iVal; + pNew = sqlite3PExpr(pParse, TK_MATCH, 0, pVal); + }else{ + Expr *pVal = sqlite3Expr(db, TK_REGISTER, 0); + if( pVal==0 ) return; + pVal->iTable = iReg; + pNew = sqlite3PExpr(pParse, TK_MATCH, 0, pVal); + } + if( pNew ){ + WhereTerm *pTerm; + int idx; + idx = whereClauseInsert(pWC, pNew, TERM_DYNAMIC|TERM_VIRTUAL); + pTerm = &pWC->a[idx]; + pTerm->leftCursor = iCsr; + pTerm->eOperator = WO_AUX; + pTerm->eMatchOp = eMatchOp; + } +} + +/* +** Possibly add terms corresponding to the LIMIT and OFFSET clauses of the +** SELECT statement passed as the second argument. These terms are only +** added if: +** +** 1. The SELECT statement has a LIMIT clause, and +** 2. The SELECT statement is not an aggregate or DISTINCT query, and +** 3. The SELECT statement has exactly one object in its from clause, and +** that object is a virtual table, and +** 4. There are no terms in the WHERE clause that will not be passed +** to the virtual table xBestIndex method. +** 5. The ORDER BY clause, if any, will be made available to the xBestIndex +** method. +** +** LIMIT and OFFSET terms are ignored by most of the planner code. They +** exist only so that they may be passed to the xBestIndex method of the +** single virtual table in the FROM clause of the SELECT. +*/ +SQLITE_PRIVATE void SQLITE_NOINLINE sqlite3WhereAddLimit(WhereClause *pWC, Select *p){ + assert( p!=0 && p->pLimit!=0 ); /* 1 -- checked by caller */ + if( p->pGroupBy==0 + && (p->selFlags & (SF_Distinct|SF_Aggregate))==0 /* 2 */ + && (p->pSrc->nSrc==1 && IsVirtual(p->pSrc->a[0].pTab)) /* 3 */ + ){ + ExprList *pOrderBy = p->pOrderBy; + int iCsr = p->pSrc->a[0].iCursor; + int ii; + + /* Check condition (4). Return early if it is not met. */ + for(ii=0; iinTerm; ii++){ + if( pWC->a[ii].wtFlags & TERM_CODED ){ + /* This term is a vector operation that has been decomposed into + ** other, subsequent terms. It can be ignored. See tag-20220128a */ + assert( pWC->a[ii].wtFlags & TERM_VIRTUAL ); + assert( pWC->a[ii].eOperator==WO_ROWVAL ); + continue; + } + if( pWC->a[ii].nChild ){ + /* If this term has child terms, then they are also part of the + ** pWC->a[] array. So this term can be ignored, as a LIMIT clause + ** will only be added if each of the child terms passes the + ** (leftCursor==iCsr) test below. */ + continue; + } + if( pWC->a[ii].leftCursor!=iCsr ) return; + } + + /* Check condition (5). Return early if it is not met. */ + if( pOrderBy ){ + for(ii=0; iinExpr; ii++){ + Expr *pExpr = pOrderBy->a[ii].pExpr; + if( pExpr->op!=TK_COLUMN ) return; + if( pExpr->iTable!=iCsr ) return; + if( pOrderBy->a[ii].fg.sortFlags & KEYINFO_ORDER_BIGNULL ) return; + } + } + + /* All conditions are met. Add the terms to the where-clause object. */ + assert( p->pLimit->op==TK_LIMIT ); + whereAddLimitExpr(pWC, p->iLimit, p->pLimit->pLeft, + iCsr, SQLITE_INDEX_CONSTRAINT_LIMIT); + if( p->iOffset>0 ){ + whereAddLimitExpr(pWC, p->iOffset, p->pLimit->pRight, + iCsr, SQLITE_INDEX_CONSTRAINT_OFFSET); + } + } +} + /* ** Initialize a preallocated WhereClause structure. */ @@ -136032,8 +159051,10 @@ SQLITE_PRIVATE void sqlite3WhereClauseInit( WhereInfo *pWInfo /* The WHERE processing context */ ){ pWC->pWInfo = pWInfo; + pWC->hasOr = 0; pWC->pOuter = 0; pWC->nTerm = 0; + pWC->nBase = 0; pWC->nSlot = ArraySize(pWC->aStatic); pWC->a = pWC->aStatic; } @@ -136044,22 +159065,36 @@ SQLITE_PRIVATE void sqlite3WhereClauseInit( ** sqlite3WhereClauseInit(). */ SQLITE_PRIVATE void sqlite3WhereClauseClear(WhereClause *pWC){ - int i; - WhereTerm *a; sqlite3 *db = pWC->pWInfo->pParse->db; - for(i=pWC->nTerm-1, a=pWC->a; i>=0; i--, a++){ - if( a->wtFlags & TERM_DYNAMIC ){ - sqlite3ExprDelete(db, a->pExpr); + assert( pWC->nTerm>=pWC->nBase ); + if( pWC->nTerm>0 ){ + WhereTerm *a = pWC->a; + WhereTerm *aLast = &pWC->a[pWC->nTerm-1]; +#ifdef SQLITE_DEBUG + int i; + /* Verify that every term past pWC->nBase is virtual */ + for(i=pWC->nBase; inTerm; i++){ + assert( (pWC->a[i].wtFlags & TERM_VIRTUAL)!=0 ); } - if( a->wtFlags & TERM_ORINFO ){ - whereOrInfoDelete(db, a->u.pOrInfo); - }else if( a->wtFlags & TERM_ANDINFO ){ - whereAndInfoDelete(db, a->u.pAndInfo); +#endif + while(1){ + assert( a->eMatchOp==0 || a->eOperator==WO_AUX ); + if( a->wtFlags & TERM_DYNAMIC ){ + sqlite3ExprDelete(db, a->pExpr); + } + if( a->wtFlags & (TERM_ORINFO|TERM_ANDINFO) ){ + if( a->wtFlags & TERM_ORINFO ){ + assert( (a->wtFlags & TERM_ANDINFO)==0 ); + whereOrInfoDelete(db, a->u.pOrInfo); + }else{ + assert( (a->wtFlags & TERM_ANDINFO)!=0 ); + whereAndInfoDelete(db, a->u.pAndInfo); + } + } + if( a==aLast ) break; + a++; } } - if( pWC->a!=pWC->aStatic ){ - sqlite3DbFree(db, pWC->a); - } } @@ -136067,27 +159102,71 @@ SQLITE_PRIVATE void sqlite3WhereClauseClear(WhereClause *pWC){ ** These routines walk (recursively) an expression tree and generate ** a bitmask indicating which tables are used in that expression ** tree. +** +** sqlite3WhereExprUsage(MaskSet, Expr) -> +** +** Return a Bitmask of all tables referenced by Expr. Expr can be +** be NULL, in which case 0 is returned. +** +** sqlite3WhereExprUsageNN(MaskSet, Expr) -> +** +** Same as sqlite3WhereExprUsage() except that Expr must not be +** NULL. The "NN" suffix on the name stands for "Not Null". +** +** sqlite3WhereExprListUsage(MaskSet, ExprList) -> +** +** Return a Bitmask of all tables referenced by every expression +** in the expression list ExprList. ExprList can be NULL, in which +** case 0 is returned. +** +** sqlite3WhereExprUsageFull(MaskSet, ExprList) -> +** +** Internal use only. Called only by sqlite3WhereExprUsageNN() for +** complex expressions that require pushing register values onto +** the stack. Many calls to sqlite3WhereExprUsageNN() do not need +** the more complex analysis done by this routine. Hence, the +** computations done by this routine are broken out into a separate +** "no-inline" function to avoid the stack push overhead in the +** common case where it is not needed. */ -SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet *pMaskSet, Expr *p){ +static SQLITE_NOINLINE Bitmask sqlite3WhereExprUsageFull( + WhereMaskSet *pMaskSet, + Expr *p +){ Bitmask mask; - if( p==0 ) return 0; - if( p->op==TK_COLUMN ){ - return sqlite3WhereGetMask(pMaskSet, p->iTable); - } mask = (p->op==TK_IF_NULL_ROW) ? sqlite3WhereGetMask(pMaskSet, p->iTable) : 0; - assert( !ExprHasProperty(p, EP_TokenOnly) ); - if( p->pLeft ) mask |= sqlite3WhereExprUsage(pMaskSet, p->pLeft); + if( p->pLeft ) mask |= sqlite3WhereExprUsageNN(pMaskSet, p->pLeft); if( p->pRight ){ - mask |= sqlite3WhereExprUsage(pMaskSet, p->pRight); + mask |= sqlite3WhereExprUsageNN(pMaskSet, p->pRight); assert( p->x.pList==0 ); - }else if( ExprHasProperty(p, EP_xIsSelect) ){ + }else if( ExprUseXSelect(p) ){ if( ExprHasProperty(p, EP_VarSelect) ) pMaskSet->bVarSelect = 1; mask |= exprSelectUsage(pMaskSet, p->x.pSelect); }else if( p->x.pList ){ mask |= sqlite3WhereExprListUsage(pMaskSet, p->x.pList); } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( (p->op==TK_FUNCTION || p->op==TK_AGG_FUNCTION) && ExprUseYWin(p) ){ + assert( p->y.pWin!=0 ); + mask |= sqlite3WhereExprListUsage(pMaskSet, p->y.pWin->pPartition); + mask |= sqlite3WhereExprListUsage(pMaskSet, p->y.pWin->pOrderBy); + mask |= sqlite3WhereExprUsage(pMaskSet, p->y.pWin->pFilter); + } +#endif return mask; } +SQLITE_PRIVATE Bitmask sqlite3WhereExprUsageNN(WhereMaskSet *pMaskSet, Expr *p){ + if( p->op==TK_COLUMN && !ExprHasProperty(p, EP_FixedCol) ){ + return sqlite3WhereGetMask(pMaskSet, p->iTable); + }else if( ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){ + assert( p->op!=TK_IF_NULL_ROW ); + return 0; + } + return sqlite3WhereExprUsageFull(pMaskSet, p); +} +SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet *pMaskSet, Expr *p){ + return p ? sqlite3WhereExprUsageNN(pMaskSet,p) : 0; +} SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet *pMaskSet, ExprList *pList){ int i; Bitmask mask = 0; @@ -136101,7 +159180,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet *pMaskSet, ExprLis /* -** Call exprAnalyze on all terms in a WHERE clause. +** Call exprAnalyze on all terms in a WHERE clause. ** ** Note that exprAnalyze() might add new virtual terms onto the ** end of the WHERE clause. We do not want to analyze these new @@ -136120,14 +159199,14 @@ SQLITE_PRIVATE void sqlite3WhereExprAnalyze( /* ** For table-valued-functions, transform the function arguments into -** new WHERE clause terms. +** new WHERE clause terms. ** ** Each function argument translates into an equality constraint against ** a HIDDEN column in the table. */ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( Parse *pParse, /* Parsing context */ - struct SrcList_item *pItem, /* The FROM clause term to process */ + SrcItem *pItem, /* The FROM clause term to process */ WhereClause *pWC /* Xfer function arguments to here */ ){ Table *pTab; @@ -136141,6 +159220,8 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( pArgs = pItem->u1.pFuncArg; if( pArgs==0 ) return; for(j=k=0; jnExpr; j++){ + Expr *pRhs; + u32 joinType; while( knCol && (pTab->aCol[k].colFlags & COLFLAG_HIDDEN)==0 ){k++;} if( k>=pTab->nCol ){ sqlite3ErrorMsg(pParse, "too many arguments on %s() - max %d", @@ -136151,9 +159232,21 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( if( pColRef==0 ) return; pColRef->iTable = pItem->iCursor; pColRef->iColumn = k++; - pColRef->pTab = pTab; - pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef, - sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0)); + assert( ExprUseYTab(pColRef) ); + pColRef->y.pTab = pTab; + pItem->colUsed |= sqlite3ExprColUsed(pColRef); + pRhs = sqlite3PExpr(pParse, TK_UPLUS, + sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0), 0); + pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef, pRhs); + if( pItem->fg.jointype & (JT_LEFT|JT_RIGHT) ){ + testcase( pItem->fg.jointype & JT_LEFT ); /* testtag-20230227a */ + testcase( pItem->fg.jointype & JT_RIGHT ); /* testtag-20230227b */ + joinType = EP_OuterON; + }else{ + testcase( pItem->fg.jointype & JT_LTORJ ); /* testtag-20230227c */ + joinType = EP_InnerON; + } + sqlite3SetJoinExpr(pTerm, pItem->iCursor, joinType); whereClauseInsert(pWC, pTerm, TERM_DYNAMIC); } } @@ -136192,19 +159285,19 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( */ typedef struct HiddenIndexInfo HiddenIndexInfo; struct HiddenIndexInfo { - WhereClause *pWC; /* The Where clause being analyzed */ - Parse *pParse; /* The parsing context */ + WhereClause *pWC; /* The Where clause being analyzed */ + Parse *pParse; /* The parsing context */ + int eDistinct; /* Value to return from sqlite3_vtab_distinct() */ + u32 mIn; /* Mask of terms that are IN (...) */ + u32 mHandleIn; /* Terms that vtab will handle as IN (...) */ + sqlite3_value *aRhs[1]; /* RHS values for constraints. MUST BE LAST + ** because extra space is allocated to hold up + ** to nTerm such values */ }; /* Forward declaration of methods */ static int whereLoopResize(sqlite3*, WhereLoop*, int); -/* Test variable that can be set to enable WHERE tracing */ -#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) -/***/ int sqlite3WhereTrace = 0; -#endif - - /* ** Return the estimated number of output rows from a WHERE clause */ @@ -136221,23 +159314,76 @@ SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo *pWInfo){ } /* -** Return TRUE if the WHERE clause returns rows in ORDER BY order. -** Return FALSE if the output needs to be sorted. +** Return the number of ORDER BY terms that are satisfied by the +** WHERE clause. A return of 0 means that the output must be +** completely sorted. A return equal to the number of ORDER BY +** terms means that no sorting is needed at all. A return that +** is positive but less than the number of ORDER BY terms means that +** block sorting is required. */ SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo *pWInfo){ - return pWInfo->nOBSat; + return pWInfo->nOBSat<0 ? 0 : pWInfo->nOBSat; } /* -** Return TRUE if the innermost loop of the WHERE clause implementation -** returns rows in ORDER BY order for complete run of the inner loop. +** In the ORDER BY LIMIT optimization, if the inner-most loop is known +** to emit rows in increasing order, and if the last row emitted by the +** inner-most loop did not fit within the sorter, then we can skip all +** subsequent rows for the current iteration of the inner loop (because they +** will not fit in the sorter either) and continue with the second inner +** loop - the loop immediately outside the inner-most. ** -** Across multiple iterations of outer loops, the output rows need not be -** sorted. As long as rows are sorted for just the innermost loop, this -** routine can return TRUE. +** When a row does not fit in the sorter (because the sorter already +** holds LIMIT+OFFSET rows that are smaller), then a jump is made to the +** label returned by this function. +** +** If the ORDER BY LIMIT optimization applies, the jump destination should +** be the continuation for the second-inner-most loop. If the ORDER BY +** LIMIT optimization does not apply, then the jump destination should +** be the continuation for the inner-most loop. +** +** It is always safe for this routine to return the continuation of the +** inner-most loop, in the sense that a correct answer will result. +** Returning the continuation the second inner loop is an optimization +** that might make the code run a little faster, but should not change +** the final answer. */ -SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo *pWInfo){ - return pWInfo->bOrderedInnerLoop; +SQLITE_PRIVATE int sqlite3WhereOrderByLimitOptLabel(WhereInfo *pWInfo){ + WhereLevel *pInner; + if( !pWInfo->bOrderedInnerLoop ){ + /* The ORDER BY LIMIT optimization does not apply. Jump to the + ** continuation of the inner-most loop. */ + return pWInfo->iContinue; + } + pInner = &pWInfo->a[pWInfo->nLevel-1]; + assert( pInner->addrNxt!=0 ); + return pInner->pRJ ? pWInfo->iContinue : pInner->addrNxt; +} + +/* +** While generating code for the min/max optimization, after handling +** the aggregate-step call to min() or max(), check to see if any +** additional looping is required. If the output order is such that +** we are certain that the correct answer has already been found, then +** code an OP_Goto to by pass subsequent processing. +** +** Any extra OP_Goto that is coded here is an optimization. The +** correct answer should be obtained regardless. This OP_Goto just +** makes the answer appear faster. +*/ +SQLITE_PRIVATE void sqlite3WhereMinMaxOptEarlyOut(Vdbe *v, WhereInfo *pWInfo){ + WhereLevel *pInner; + int i; + if( !pWInfo->bOrderedInnerLoop ) return; + if( pWInfo->nOBSat==0 ) return; + for(i=pWInfo->nLevel-1; i>=0; i--){ + pInner = &pWInfo->a[i]; + if( (pInner->pWLoop->wsFlags & WHERE_COLUMN_IN)!=0 ){ + sqlite3VdbeGoto(v, pInner->addrNxt); + return; + } + } + sqlite3VdbeGoto(v, pWInfo->iBreak); } /* @@ -136259,10 +159405,10 @@ SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo *pWInfo){ /* ** Return ONEPASS_OFF (0) if an UPDATE or DELETE statement is unable to -** operate directly on the rowis returned by a WHERE clause. Return +** operate directly on the rowids returned by a WHERE clause. Return ** ONEPASS_SINGLE (1) if the statement can operation directly because only ** a single row is to be changed. Return ONEPASS_MULTI (2) if the one-pass -** optimization can be used on multiple +** optimization can be used on multiple ** ** If the ONEPASS optimization is used (if this routine returns true) ** then also write the indices of open cursors used by ONEPASS @@ -136286,6 +159432,14 @@ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo *pWInfo, int *aiCur){ return pWInfo->eOnePass; } +/* +** Return TRUE if the WHERE loop uses the OP_DeferredSeek opcode to move +** the data cursor to the row selected by the index cursor. +*/ +SQLITE_PRIVATE int sqlite3WhereUsesDeferredSeek(WhereInfo *pWInfo){ + return pWInfo->bDeferredSeek; +} + /* ** Move the content of pSrc into pDest */ @@ -136341,7 +159495,12 @@ whereOrInsert_done: SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet *pMaskSet, int iCursor){ int i; assert( pMaskSet->n<=(int)sizeof(Bitmask)*8 ); - for(i=0; in; i++){ + assert( pMaskSet->n>0 || pMaskSet->ix[0]<0 ); + assert( iCursor>=-1 ); + if( pMaskSet->ix[0]==iCursor ){ + return 1; + } + for(i=1; in; i++){ if( pMaskSet->ix[i]==iCursor ){ return MASKBIT(i); } @@ -136349,6 +159508,30 @@ SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet *pMaskSet, int iCursor){ return 0; } +/* Allocate memory that is automatically freed when pWInfo is freed. +*/ +SQLITE_PRIVATE void *sqlite3WhereMalloc(WhereInfo *pWInfo, u64 nByte){ + WhereMemBlock *pBlock; + pBlock = sqlite3DbMallocRawNN(pWInfo->pParse->db, nByte+sizeof(*pBlock)); + if( pBlock ){ + pBlock->pNext = pWInfo->pMemToFree; + pBlock->sz = nByte; + pWInfo->pMemToFree = pBlock; + pBlock++; + } + return (void*)pBlock; +} +SQLITE_PRIVATE void *sqlite3WhereRealloc(WhereInfo *pWInfo, void *pOld, u64 nByte){ + void *pNew = sqlite3WhereMalloc(pWInfo, nByte); + if( pNew && pOld ){ + WhereMemBlock *pOldBlk = (WhereMemBlock*)pOld; + pOldBlk--; + assert( pOldBlk->szsz); + } + return pNew; +} + /* ** Create a new mask for cursor iCursor. ** @@ -136362,6 +159545,18 @@ static void createMask(WhereMaskSet *pMaskSet, int iCursor){ pMaskSet->ix[pMaskSet->n++] = iCursor; } +/* +** If the right-hand branch of the expression is a TK_COLUMN, then return +** a pointer to the right-hand branch. Otherwise, return NULL. +*/ +static Expr *whereRightSubexprIsColumn(Expr *p){ + p = sqlite3ExprSkipCollateAndLikely(p->pRight); + if( ALWAYS(p!=0) && p->op==TK_COLUMN && !ExprHasProperty(p, EP_FixedCol) ){ + return p; + } + return 0; +} + /* ** Advance to the next WhereTerm that matches according to the criteria ** established when the pScan object was initialized by whereScanInit(). @@ -136381,18 +159576,20 @@ static WhereTerm *whereScanNext(WhereScan *pScan){ iColumn = pScan->aiColumn[pScan->iEquiv-1]; iCur = pScan->aiCur[pScan->iEquiv-1]; assert( pWC!=0 ); + assert( iCur>=0 ); do{ for(pTerm=pWC->a+k; knTerm; k++, pTerm++){ + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 || pTerm->leftCursor<0 ); if( pTerm->leftCursor==iCur - && pTerm->u.leftColumn==iColumn + && pTerm->u.x.leftColumn==iColumn && (iColumn!=XN_EXPR || sqlite3ExprCompareSkip(pTerm->pExpr->pLeft, pScan->pIdxExpr,iCur)==0) - && (pScan->iEquiv<=1 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin)) + && (pScan->iEquiv<=1 || !ExprHasProperty(pTerm->pExpr, EP_OuterON)) ){ if( (pTerm->eOperator & WO_EQUIV)!=0 && pScan->nEquivaiCur) - && (pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight))->op==TK_COLUMN + && (pX = whereRightSubexprIsColumn(pTerm->pExpr))!=0 ){ int j; for(j=0; jnEquiv; j++){ @@ -136417,15 +159614,15 @@ static WhereTerm *whereScanNext(WhereScan *pScan){ continue; } assert(pX->pLeft); - pColl = sqlite3BinaryCompareCollSeq(pParse, - pX->pLeft, pX->pRight); + pColl = sqlite3ExprCompareCollSeq(pParse, pX); if( pColl==0 ) pColl = pParse->db->pDfltColl; if( sqlite3StrICmp(pColl->zName, pScan->zCollName) ){ continue; } } if( (pTerm->eOperator & (WO_EQ|WO_IS))!=0 - && (pX = pTerm->pExpr->pRight)->op==TK_COLUMN + && (pX = pTerm->pExpr->pRight, ALWAYS(pX!=0)) + && pX->op==TK_COLUMN && pX->iTable==pScan->aiCur[0] && pX->iColumn==pScan->aiColumn[0] ){ @@ -136434,6 +159631,18 @@ static WhereTerm *whereScanNext(WhereScan *pScan){ } pScan->pWC = pWC; pScan->k = k+1; +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace & 0x20000 ){ + int ii; + sqlite3DebugPrintf("SCAN-TERM %p: nEquiv=%d", + pTerm, pScan->nEquiv); + for(ii=0; iinEquiv; ii++){ + sqlite3DebugPrintf(" {%d:%d}", + pScan->aiCur[ii], pScan->aiColumn[ii]); + } + sqlite3DebugPrintf("\n"); + } +#endif return pTerm; } } @@ -136449,6 +159658,17 @@ static WhereTerm *whereScanNext(WhereScan *pScan){ return 0; } +/* +** This is whereScanInit() for the case of an index on an expression. +** It is factored out into a separate tail-recursion subroutine so that +** the normal whereScanInit() routine, which is a high-runner, does not +** need to push registers onto the stack as part of its prologue. +*/ +static SQLITE_NOINLINE WhereTerm *whereScanInitIndexExpr(WhereScan *pScan){ + pScan->idxaff = sqlite3ExprAffinity(pScan->pIdxExpr); + return whereScanNext(pScan); +} + /* ** Initialize a WHERE clause scanner object. Return a pointer to the ** first match. Return NULL if there are no matches. @@ -136481,27 +159701,29 @@ static WhereTerm *whereScanInit( pScan->pIdxExpr = 0; pScan->idxaff = 0; pScan->zCollName = 0; + pScan->opMask = opMask; + pScan->k = 0; + pScan->aiCur[0] = iCur; + pScan->nEquiv = 1; + pScan->iEquiv = 1; if( pIdx ){ int j = iColumn; iColumn = pIdx->aiColumn[j]; - if( iColumn==XN_EXPR ){ - pScan->pIdxExpr = pIdx->aColExpr->a[j].pExpr; - pScan->zCollName = pIdx->azColl[j]; - }else if( iColumn==pIdx->pTable->iPKey ){ + if( iColumn==pIdx->pTable->iPKey ){ iColumn = XN_ROWID; }else if( iColumn>=0 ){ pScan->idxaff = pIdx->pTable->aCol[iColumn].affinity; pScan->zCollName = pIdx->azColl[j]; + }else if( iColumn==XN_EXPR ){ + pScan->pIdxExpr = pIdx->aColExpr->a[j].pExpr; + pScan->zCollName = pIdx->azColl[j]; + pScan->aiColumn[0] = XN_EXPR; + return whereScanInitIndexExpr(pScan); } }else if( iColumn==XN_EXPR ){ return 0; } - pScan->opMask = opMask; - pScan->k = 0; - pScan->aiCur[0] = iCur; pScan->aiColumn[0] = iColumn; - pScan->nEquiv = 1; - pScan->iEquiv = 1; return whereScanNext(pScan); } @@ -136511,7 +159733,7 @@ static WhereTerm *whereScanInit( ** if pIdx!=0 and is one of the WO_xx operator codes specified by ** the op parameter. Return a pointer to the term. Return 0 if not found. ** -** If pIdx!=0 then it must be one of the indexes of table iCur. +** If pIdx!=0 then it must be one of the indexes of table iCur. ** Search for terms matching the iColumn-th column of pIdx ** rather than the iColumn-th column of table iCur. ** @@ -136575,8 +159797,9 @@ static int findIndexCol( const char *zColl = pIdx->azColl[iCol]; for(i=0; inExpr; i++){ - Expr *p = sqlite3ExprSkipCollate(pList->a[i].pExpr); - if( p->op==TK_COLUMN + Expr *p = sqlite3ExprSkipCollateAndLikely(pList->a[i].pExpr); + if( ALWAYS(p!=0) + && (p->op==TK_COLUMN || p->op==TK_AGG_COLUMN) && p->iColumn==pIdx->aiColumn[iCol] && p->iTable==iBase ){ @@ -136624,23 +159847,25 @@ static int isDistinctRedundant( ){ Table *pTab; Index *pIdx; - int i; + int i; int iBase; /* If there is more than one table or sub-select in the FROM clause of - ** this query, then it will not be possible to show that the DISTINCT + ** this query, then it will not be possible to show that the DISTINCT ** clause is redundant. */ if( pTabList->nSrc!=1 ) return 0; iBase = pTabList->a[0].iCursor; pTab = pTabList->a[0].pTab; - /* If any of the expressions is an IPK column on table iBase, then return + /* If any of the expressions is an IPK column on table iBase, then return ** true. Note: The (p->iTable==iBase) part of this test may be false if the ** current SELECT is a correlated sub-query. */ for(i=0; inExpr; i++){ - Expr *p = sqlite3ExprSkipCollate(pDistinct->a[i].pExpr); - if( p->op==TK_COLUMN && p->iTable==iBase && p->iColumn<0 ) return 1; + Expr *p = sqlite3ExprSkipCollateAndLikely(pDistinct->a[i].pExpr); + if( NEVER(p==0) ) continue; + if( p->op!=TK_COLUMN && p->op!=TK_AGG_COLUMN ) continue; + if( p->iTable==iBase && p->iColumn<0 ) return 1; } /* Loop through all indices on the table, checking each to see if it makes @@ -136658,6 +159883,7 @@ static int isDistinctRedundant( */ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ if( !IsUniqueIndex(pIdx) ) continue; + if( pIdx->pPartIdxWhere ) continue; for(i=0; inKeyCol; i++){ if( 0==sqlite3WhereFindTerm(pWC, iBase, i, ~(Bitmask)0, WO_EQ, pIdx) ){ if( findIndexCol(pParse, pDistinct, iBase, pIdx, i)<0 ) break; @@ -136685,20 +159911,20 @@ static LogEst estLog(LogEst N){ ** Convert OP_Column opcodes to OP_Copy in previously generated code. ** ** This routine runs over generated VDBE code and translates OP_Column -** opcodes into OP_Copy when the table is being accessed via co-routine +** opcodes into OP_Copy when the table is being accessed via co-routine ** instead of via table lookup. ** -** If the bIncrRowid parameter is 0, then any OP_Rowid instructions on -** cursor iTabCur are transformed into OP_Null. Or, if bIncrRowid is non-zero, -** then each OP_Rowid is transformed into an instruction to increment the -** value stored in its output register. +** If the iAutoidxCur is not zero, then any OP_Rowid instructions on +** cursor iTabCur are transformed into OP_Sequence opcode for the +** iAutoidxCur cursor, in order to generate unique rowids for the +** automatic index being generated. */ static void translateColumnToCopy( Parse *pParse, /* Parsing context */ int iStart, /* Translate from this opcode to the end */ int iTabCur, /* OP_Column/OP_Rowid references to this table */ int iRegister, /* The first column is in this register */ - int bIncrRowid /* If non-zero, transform OP_rowid to OP_AddImm(1) */ + int iAutoidxCur /* If non-zero, cursor of autoindex being generated */ ){ Vdbe *v = pParse->pVdbe; VdbeOp *pOp = sqlite3VdbeGetOp(v, iStart); @@ -136711,17 +159937,16 @@ static void translateColumnToCopy( pOp->p1 = pOp->p2 + iRegister; pOp->p2 = pOp->p3; pOp->p3 = 0; + pOp->p5 = 2; /* Cause the MEM_Subtype flag to be cleared */ }else if( pOp->opcode==OP_Rowid ){ - if( bIncrRowid ){ - /* Increment the value stored in the P2 operand of the OP_Rowid. */ - pOp->opcode = OP_AddImm; - pOp->p1 = pOp->p2; - pOp->p2 = 1; - }else{ + pOp->opcode = OP_Sequence; + pOp->p1 = iAutoidxCur; +#ifdef SQLITE_ALLOW_ROWID_IN_VIEW + if( iAutoidxCur==0 ){ pOp->opcode = OP_Null; - pOp->p1 = 0; pOp->p3 = 0; } +#endif } } } @@ -136733,16 +159958,18 @@ static void translateColumnToCopy( ** are no-ops. */ #if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(WHERETRACE_ENABLED) -static void TRACE_IDX_INPUTS(sqlite3_index_info *p){ +static void whereTraceIndexInfoInputs(sqlite3_index_info *p){ int i; - if( !sqlite3WhereTrace ) return; + if( (sqlite3WhereTrace & 0x10)==0 ) return; for(i=0; inConstraint; i++){ - sqlite3DebugPrintf(" constraint[%d]: col=%d termid=%d op=%d usabled=%d\n", + sqlite3DebugPrintf( + " constraint[%d]: col=%d termid=%d op=%d usabled=%d collseq=%s\n", i, p->aConstraint[i].iColumn, p->aConstraint[i].iTermOffset, p->aConstraint[i].op, - p->aConstraint[i].usable); + p->aConstraint[i].usable, + sqlite3_vtab_collation(p,i)); } for(i=0; inOrderBy; i++){ sqlite3DebugPrintf(" orderby[%d]: col=%d desc=%d\n", @@ -136751,9 +159978,9 @@ static void TRACE_IDX_INPUTS(sqlite3_index_info *p){ p->aOrderBy[i].desc); } } -static void TRACE_IDX_OUTPUTS(sqlite3_index_info *p){ +static void whereTraceIndexInfoOutputs(sqlite3_index_info *p){ int i; - if( !sqlite3WhereTrace ) return; + if( (sqlite3WhereTrace & 0x10)==0 ) return; for(i=0; inConstraint; i++){ sqlite3DebugPrintf(" usage[%d]: argvIdx=%d omit=%d\n", i, @@ -136767,10 +159994,47 @@ static void TRACE_IDX_OUTPUTS(sqlite3_index_info *p){ sqlite3DebugPrintf(" estimatedRows=%lld\n", p->estimatedRows); } #else -#define TRACE_IDX_INPUTS(A) -#define TRACE_IDX_OUTPUTS(A) +#define whereTraceIndexInfoInputs(A) +#define whereTraceIndexInfoOutputs(A) #endif +/* +** We know that pSrc is an operand of an outer join. Return true if +** pTerm is a constraint that is compatible with that join. +** +** pTerm must be EP_OuterON if pSrc is the right operand of an +** outer join. pTerm can be either EP_OuterON or EP_InnerON if pSrc +** is the left operand of a RIGHT join. +** +** See https://sqlite.org/forum/forumpost/206d99a16dd9212f +** for an example of a WHERE clause constraints that may not be used on +** the right table of a RIGHT JOIN because the constraint implies a +** not-NULL condition on the left table of the RIGHT JOIN. +*/ +static int constraintCompatibleWithOuterJoin( + const WhereTerm *pTerm, /* WHERE clause term to check */ + const SrcItem *pSrc /* Table we are trying to access */ +){ + assert( (pSrc->fg.jointype&(JT_LEFT|JT_LTORJ|JT_RIGHT))!=0 ); /* By caller */ + testcase( (pSrc->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))==JT_LEFT ); + testcase( (pSrc->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))==JT_LTORJ ); + testcase( ExprHasProperty(pTerm->pExpr, EP_OuterON) ) + testcase( ExprHasProperty(pTerm->pExpr, EP_InnerON) ); + if( !ExprHasProperty(pTerm->pExpr, EP_OuterON|EP_InnerON) + || pTerm->pExpr->w.iJoin != pSrc->iCursor + ){ + return 0; + } + if( (pSrc->fg.jointype & (JT_LEFT|JT_RIGHT))!=0 + && ExprHasProperty(pTerm->pExpr, EP_InnerON) + ){ + return 0; + } + return 1; +} + + + #ifndef SQLITE_OMIT_AUTOMATIC_INDEX /* ** Return TRUE if the WHERE clause term pTerm is of a form where it @@ -136778,25 +160042,23 @@ static void TRACE_IDX_OUTPUTS(sqlite3_index_info *p){ ** index existed. */ static int termCanDriveIndex( - WhereTerm *pTerm, /* WHERE clause term to check */ - struct SrcList_item *pSrc, /* Table we are trying to access */ - Bitmask notReady /* Tables in outer loops of the join */ + const WhereTerm *pTerm, /* WHERE clause term to check */ + const SrcItem *pSrc, /* Table we are trying to access */ + const Bitmask notReady /* Tables in outer loops of the join */ ){ char aff; if( pTerm->leftCursor!=pSrc->iCursor ) return 0; if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) return 0; - if( (pSrc->fg.jointype & JT_LEFT) - && !ExprHasProperty(pTerm->pExpr, EP_FromJoin) - && (pTerm->eOperator & WO_IS) + assert( (pSrc->fg.jointype & JT_RIGHT)==0 ); + if( (pSrc->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))!=0 + && !constraintCompatibleWithOuterJoin(pTerm,pSrc) ){ - /* Cannot use an IS term from the WHERE clause as an index driver for - ** the RHS of a LEFT JOIN. Such a term can only be used if it is from - ** the ON clause. */ - return 0; + return 0; /* See https://sqlite.org/forum/forumpost/51e6959f61 */ } if( (pTerm->prereqRight & notReady)!=0 ) return 0; - if( pTerm->u.leftColumn<0 ) return 0; - aff = pSrc->pTab->aCol[pTerm->u.leftColumn].affinity; + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + if( pTerm->u.x.leftColumn<0 ) return 0; + aff = pSrc->pTab->aCol[pTerm->u.x.leftColumn].affinity; if( !sqlite3IndexAffinityOk(pTerm->pExpr, aff) ) return 0; testcase( pTerm->pExpr->op==TK_IS ); return 1; @@ -136805,16 +160067,66 @@ static int termCanDriveIndex( #ifndef SQLITE_OMIT_AUTOMATIC_INDEX + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +/* +** Argument pIdx represents an automatic index that the current statement +** will create and populate. Add an OP_Explain with text of the form: +** +** CREATE AUTOMATIC INDEX ON
                () [WHERE ] +** +** This is only required if sqlite3_stmt_scanstatus() is enabled, to +** associate an SQLITE_SCANSTAT_NCYCLE and SQLITE_SCANSTAT_NLOOP +** values with. In order to avoid breaking legacy code and test cases, +** the OP_Explain is not added if this is an EXPLAIN QUERY PLAN command. +*/ +static void explainAutomaticIndex( + Parse *pParse, + Index *pIdx, /* Automatic index to explain */ + int bPartial, /* True if pIdx is a partial index */ + int *pAddrExplain /* OUT: Address of OP_Explain */ +){ + if( IS_STMT_SCANSTATUS(pParse->db) && pParse->explain!=2 ){ + Table *pTab = pIdx->pTable; + const char *zSep = ""; + char *zText = 0; + int ii = 0; + sqlite3_str *pStr = sqlite3_str_new(pParse->db); + sqlite3_str_appendf(pStr,"CREATE AUTOMATIC INDEX ON %s(", pTab->zName); + assert( pIdx->nColumn>1 ); + assert( pIdx->aiColumn[pIdx->nColumn-1]==XN_ROWID ); + for(ii=0; ii<(pIdx->nColumn-1); ii++){ + const char *zName = 0; + int iCol = pIdx->aiColumn[ii]; + + zName = pTab->aCol[iCol].zCnName; + sqlite3_str_appendf(pStr, "%s%s", zSep, zName); + zSep = ", "; + } + zText = sqlite3_str_finish(pStr); + if( zText==0 ){ + sqlite3OomFault(pParse->db); + }else{ + *pAddrExplain = sqlite3VdbeExplain( + pParse, 0, "%s)%s", zText, (bPartial ? " WHERE " : "") + ); + sqlite3_free(zText); + } + } +} +#else +# define explainAutomaticIndex(a,b,c,d) +#endif + /* ** Generate code to construct the Index object for an automatic index ** and to set up the WhereLevel object pLevel so that the code generator ** makes use of the automatic index. */ -static void constructAutomaticIndex( +static SQLITE_NOINLINE void constructAutomaticIndex( Parse *pParse, /* The parsing context */ WhereClause *pWC, /* The WHERE clause */ - struct SrcList_item *pSrc, /* The FROM clause term to get the next index */ - Bitmask notReady, /* Mask of cursors that are not available */ + const Bitmask notReady, /* Mask of cursors that are not available */ WhereLevel *pLevel /* Write new index here */ ){ int nKeyCol; /* Number of columns in the constructed index */ @@ -136834,12 +160146,17 @@ static void constructAutomaticIndex( char *zNotUsed; /* Extra space on the end of pIdx */ Bitmask idxCols; /* Bitmap of columns used for indexing */ Bitmask extraCols; /* Bitmap of additional columns */ - u8 sentWarning = 0; /* True if a warnning has been issued */ + u8 sentWarning = 0; /* True if a warning has been issued */ + u8 useBloomFilter = 0; /* True to also add a Bloom filter */ Expr *pPartial = 0; /* Partial Index Expression */ int iContinue = 0; /* Jump here to skip excluded rows */ - struct SrcList_item *pTabItem; /* FROM clause term being indexed */ + SrcList *pTabList; /* The complete FROM clause */ + SrcItem *pSrc; /* The FROM clause term to get the next index */ int addrCounter = 0; /* Address where integer counter is initialized */ int regBase; /* Array of registers where record is assembled */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrExp = 0; /* Address of OP_Explain */ +#endif /* Generate code to skip over the creation and initialization of the ** transient index on 2nd and subsequent iterations of the loop. */ @@ -136850,31 +160167,35 @@ static void constructAutomaticIndex( /* Count the number of columns that will be added to the index ** and used to match WHERE clause constraints */ nKeyCol = 0; + pTabList = pWC->pWInfo->pTabList; + pSrc = &pTabList->a[pLevel->iFrom]; pTable = pSrc->pTab; pWCEnd = &pWC->a[pWC->nTerm]; pLoop = pLevel->pWLoop; idxCols = 0; for(pTerm=pWC->a; pTermpExpr; - assert( !ExprHasProperty(pExpr, EP_FromJoin) /* prereq always non-zero */ - || pExpr->iRightJoinTable!=pSrc->iCursor /* for the right-hand */ - || pLoop->prereq!=0 ); /* table of a LEFT JOIN */ - if( pLoop->prereq==0 - && (pTerm->wtFlags & TERM_VIRTUAL)==0 - && !ExprHasProperty(pExpr, EP_FromJoin) - && sqlite3ExprIsTableConstant(pExpr, pSrc->iCursor) ){ - pPartial = sqlite3ExprAnd(pParse->db, pPartial, + /* Make the automatic index a partial index if there are terms in the + ** WHERE clause (or the ON clause of a LEFT join) that constrain which + ** rows of the target table (pSrc) that can be used. */ + if( (pTerm->wtFlags & TERM_VIRTUAL)==0 + && sqlite3ExprIsSingleTableConstraint(pExpr, pTabList, pLevel->iFrom) + ){ + pPartial = sqlite3ExprAnd(pParse, pPartial, sqlite3ExprDup(pParse->db, pExpr, 0)); } if( termCanDriveIndex(pTerm, pSrc, notReady) ){ - int iCol = pTerm->u.leftColumn; - Bitmask cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol); + int iCol; + Bitmask cMask; + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + iCol = pTerm->u.x.leftColumn; + cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol); testcase( iCol==BMS ); testcase( iCol==BMS-1 ); if( !sentWarning ){ sqlite3_log(SQLITE_WARNING_AUTOINDEX, "automatic index on %s(%s)", pTable->zName, - pTable->aCol[iCol].zName); + pTable->aCol[iCol].zCnName); sentWarning = 1; } if( (idxCols & cMask)==0 ){ @@ -136886,7 +160207,7 @@ static void constructAutomaticIndex( } } } - assert( nKeyCol>0 ); + assert( nKeyCol>0 || pParse->db->mallocFailed ); pLoop->u.btree.nEq = pLoop->nLTerm = nKeyCol; pLoop->wsFlags = WHERE_COLUMN_EQ | WHERE_IDX_ONLY | WHERE_INDEXED | WHERE_AUTO_INDEX; @@ -136899,7 +160220,11 @@ static void constructAutomaticIndex( ** original table changes and the index and table cannot both be used ** if they go out of sync. */ - extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1)); + if( IsView(pTable) ){ + extraCols = ALLBITS; + }else{ + extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1)); + } mxBitCol = MIN(BMS-1,pTable->nCol); testcase( pTable->nCol==BMS-1 ); testcase( pTable->nCol==BMS-2 ); @@ -136920,17 +160245,31 @@ static void constructAutomaticIndex( idxCols = 0; for(pTerm=pWC->a; pTermu.leftColumn; - Bitmask cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol); + int iCol; + Bitmask cMask; + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + iCol = pTerm->u.x.leftColumn; + cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol); testcase( iCol==BMS-1 ); testcase( iCol==BMS ); if( (idxCols & cMask)==0 ){ Expr *pX = pTerm->pExpr; idxCols |= cMask; - pIdx->aiColumn[n] = pTerm->u.leftColumn; - pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight); + pIdx->aiColumn[n] = pTerm->u.x.leftColumn; + pColl = sqlite3ExprCompareCollSeq(pParse, pX); + assert( pColl!=0 || pParse->nErr>0 ); /* TH3 collate01.800 */ pIdx->azColl[n] = pColl ? pColl->zName : sqlite3StrBINARY; n++; + if( ALWAYS(pX->pLeft!=0) + && sqlite3ExprAffinity(pX->pLeft)!=SQLITE_AFF_TEXT + ){ + /* TUNING: only use a Bloom filter on an automatic index + ** if one or more key columns has the ability to hold numeric + ** values, since strings all have the same hash in the Bloom + ** filter implementation and hence a Bloom filter on a text column + ** is not usually helpful. */ + useBloomFilter = 1; + } } } } @@ -136957,27 +160296,32 @@ static void constructAutomaticIndex( pIdx->azColl[n] = sqlite3StrBINARY; /* Create the automatic index */ + explainAutomaticIndex(pParse, pIdx, pPartial!=0, &addrExp); assert( pLevel->iIdxCur>=0 ); pLevel->iIdxCur = pParse->nTab++; sqlite3VdbeAddOp2(v, OP_OpenAutoindex, pLevel->iIdxCur, nKeyCol+1); sqlite3VdbeSetP4KeyInfo(pParse, pIdx); VdbeComment((v, "for %s", pTable->zName)); + if( OptimizationEnabled(pParse->db, SQLITE_BloomFilter) && useBloomFilter ){ + sqlite3WhereExplainBloomFilter(pParse, pWC->pWInfo, pLevel); + pLevel->regFilter = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Blob, 10000, pLevel->regFilter); + } /* Fill the automatic index with content */ - sqlite3ExprCachePush(pParse); - pTabItem = &pWC->pWInfo->pTabList->a[pLevel->iFrom]; - if( pTabItem->fg.viaCoroutine ){ - int regYield = pTabItem->regReturn; + assert( pSrc == &pWC->pWInfo->pTabList->a[pLevel->iFrom] ); + if( pSrc->fg.viaCoroutine ){ + int regYield = pSrc->regReturn; addrCounter = sqlite3VdbeAddOp2(v, OP_Integer, 0, 0); - sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); + sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pSrc->addrFillSub); addrTop = sqlite3VdbeAddOp1(v, OP_Yield, regYield); VdbeCoverage(v); - VdbeComment((v, "next row of \"%s\"", pTabItem->pTab->zName)); + VdbeComment((v, "next row of %s", pSrc->pTab->zName)); }else{ addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, pLevel->iTabCur); VdbeCoverage(v); } if( pPartial ){ - iContinue = sqlite3VdbeMakeLabel(v); + iContinue = sqlite3VdbeMakeLabel(pParse); sqlite3ExprIfFalse(pParse, pPartial, iContinue, SQLITE_JUMPIFNULL); pLoop->wsFlags |= WHERE_PARTIALIDX; } @@ -136985,48 +160329,189 @@ static void constructAutomaticIndex( regBase = sqlite3GenerateIndexKey( pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0 ); + if( pLevel->regFilter ){ + sqlite3VdbeAddOp4Int(v, OP_FilterAdd, pLevel->regFilter, 0, + regBase, pLoop->u.btree.nEq); + } + sqlite3VdbeScanStatusCounters(v, addrExp, addrExp, sqlite3VdbeCurrentAddr(v)); sqlite3VdbeAddOp2(v, OP_IdxInsert, pLevel->iIdxCur, regRecord); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); if( pPartial ) sqlite3VdbeResolveLabel(v, iContinue); - if( pTabItem->fg.viaCoroutine ){ + if( pSrc->fg.viaCoroutine ){ sqlite3VdbeChangeP2(v, addrCounter, regBase+n); testcase( pParse->db->mallocFailed ); + assert( pLevel->iIdxCur>0 ); translateColumnToCopy(pParse, addrTop, pLevel->iTabCur, - pTabItem->regResult, 1); + pSrc->regResult, pLevel->iIdxCur); sqlite3VdbeGoto(v, addrTop); - pTabItem->fg.viaCoroutine = 0; + pSrc->fg.viaCoroutine = 0; }else{ sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); VdbeCoverage(v); + sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX); } - sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX); sqlite3VdbeJumpHere(v, addrTop); sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3ExprCachePop(pParse); - + /* Jump here when skipping the initialization */ sqlite3VdbeJumpHere(v, addrInit); + sqlite3VdbeScanStatusRange(v, addrExp, addrExp, -1); end_auto_index_create: sqlite3ExprDelete(pParse->db, pPartial); } #endif /* SQLITE_OMIT_AUTOMATIC_INDEX */ +/* +** Generate bytecode that will initialize a Bloom filter that is appropriate +** for pLevel. +** +** If there are inner loops within pLevel that have the WHERE_BLOOMFILTER +** flag set, initialize a Bloomfilter for them as well. Except don't do +** this recursive initialization if the SQLITE_BloomPulldown optimization has +** been turned off. +** +** When the Bloom filter is initialized, the WHERE_BLOOMFILTER flag is cleared +** from the loop, but the regFilter value is set to a register that implements +** the Bloom filter. When regFilter is positive, the +** sqlite3WhereCodeOneLoopStart() will generate code to test the Bloom filter +** and skip the subsequence B-Tree seek if the Bloom filter indicates that +** no matching rows exist. +** +** This routine may only be called if it has previously been determined that +** the loop would benefit from a Bloom filter, and the WHERE_BLOOMFILTER bit +** is set. +*/ +static SQLITE_NOINLINE void sqlite3ConstructBloomFilter( + WhereInfo *pWInfo, /* The WHERE clause */ + int iLevel, /* Index in pWInfo->a[] that is pLevel */ + WhereLevel *pLevel, /* Make a Bloom filter for this FROM term */ + Bitmask notReady /* Loops that are not ready */ +){ + int addrOnce; /* Address of opening OP_Once */ + int addrTop; /* Address of OP_Rewind */ + int addrCont; /* Jump here to skip a row */ + const WhereTerm *pTerm; /* For looping over WHERE clause terms */ + const WhereTerm *pWCEnd; /* Last WHERE clause term */ + Parse *pParse = pWInfo->pParse; /* Parsing context */ + Vdbe *v = pParse->pVdbe; /* VDBE under construction */ + WhereLoop *pLoop = pLevel->pWLoop; /* The loop being coded */ + int iCur; /* Cursor for table getting the filter */ + IndexedExpr *saved_pIdxEpr; /* saved copy of Parse.pIdxEpr */ + + saved_pIdxEpr = pParse->pIdxEpr; + pParse->pIdxEpr = 0; + + assert( pLoop!=0 ); + assert( v!=0 ); + assert( pLoop->wsFlags & WHERE_BLOOMFILTER ); + + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + do{ + const SrcList *pTabList; + const SrcItem *pItem; + const Table *pTab; + u64 sz; + int iSrc; + sqlite3WhereExplainBloomFilter(pParse, pWInfo, pLevel); + addrCont = sqlite3VdbeMakeLabel(pParse); + iCur = pLevel->iTabCur; + pLevel->regFilter = ++pParse->nMem; + + /* The Bloom filter is a Blob held in a register. Initialize it + ** to zero-filled blob of at least 80K bits, but maybe more if the + ** estimated size of the table is larger. We could actually + ** measure the size of the table at run-time using OP_Count with + ** P3==1 and use that value to initialize the blob. But that makes + ** testing complicated. By basing the blob size on the value in the + ** sqlite_stat1 table, testing is much easier. + */ + pTabList = pWInfo->pTabList; + iSrc = pLevel->iFrom; + pItem = &pTabList->a[iSrc]; + assert( pItem!=0 ); + pTab = pItem->pTab; + assert( pTab!=0 ); + sz = sqlite3LogEstToInt(pTab->nRowLogEst); + if( sz<10000 ){ + sz = 10000; + }else if( sz>10000000 ){ + sz = 10000000; + } + sqlite3VdbeAddOp2(v, OP_Blob, (int)sz, pLevel->regFilter); + + addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, iCur); VdbeCoverage(v); + pWCEnd = &pWInfo->sWC.a[pWInfo->sWC.nTerm]; + for(pTerm=pWInfo->sWC.a; pTermpExpr; + if( (pTerm->wtFlags & TERM_VIRTUAL)==0 + && sqlite3ExprIsSingleTableConstraint(pExpr, pTabList, iSrc) + ){ + sqlite3ExprIfFalse(pParse, pTerm->pExpr, addrCont, SQLITE_JUMPIFNULL); + } + } + if( pLoop->wsFlags & WHERE_IPK ){ + int r1 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp2(v, OP_Rowid, iCur, r1); + sqlite3VdbeAddOp4Int(v, OP_FilterAdd, pLevel->regFilter, 0, r1, 1); + sqlite3ReleaseTempReg(pParse, r1); + }else{ + Index *pIdx = pLoop->u.btree.pIndex; + int n = pLoop->u.btree.nEq; + int r1 = sqlite3GetTempRange(pParse, n); + int jj; + for(jj=0; jjpTable==pItem->pTab ); + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iCur, jj, r1+jj); + } + sqlite3VdbeAddOp4Int(v, OP_FilterAdd, pLevel->regFilter, 0, r1, n); + sqlite3ReleaseTempRange(pParse, r1, n); + } + sqlite3VdbeResolveLabel(v, addrCont); + sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); + VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addrTop); + pLoop->wsFlags &= ~WHERE_BLOOMFILTER; + if( OptimizationDisabled(pParse->db, SQLITE_BloomPulldown) ) break; + while( ++iLevel < pWInfo->nLevel ){ + const SrcItem *pTabItem; + pLevel = &pWInfo->a[iLevel]; + pTabItem = &pWInfo->pTabList->a[pLevel->iFrom]; + if( pTabItem->fg.jointype & (JT_LEFT|JT_LTORJ) ) continue; + pLoop = pLevel->pWLoop; + if( NEVER(pLoop==0) ) continue; + if( pLoop->prereq & notReady ) continue; + if( (pLoop->wsFlags & (WHERE_BLOOMFILTER|WHERE_COLUMN_IN)) + ==WHERE_BLOOMFILTER + ){ + /* This is a candidate for bloom-filter pull-down (early evaluation). + ** The test that WHERE_COLUMN_IN is omitted is important, as we are + ** not able to do early evaluation of bloom filters that make use of + ** the IN operator */ + break; + } + } + }while( iLevel < pWInfo->nLevel ); + sqlite3VdbeJumpHere(v, addrOnce); + pParse->pIdxEpr = saved_pIdxEpr; +} + + #ifndef SQLITE_OMIT_VIRTUALTABLE /* -** Allocate and populate an sqlite3_index_info structure. It is the +** Allocate and populate an sqlite3_index_info structure. It is the ** responsibility of the caller to eventually release the structure -** by passing the pointer returned by this function to sqlite3_free(). +** by passing the pointer returned by this function to freeIndexInfo(). */ static sqlite3_index_info *allocateIndexInfo( - Parse *pParse, /* The parsing context */ + WhereInfo *pWInfo, /* The WHERE clause */ WhereClause *pWC, /* The WHERE clause being analyzed */ Bitmask mUnusable, /* Ignore terms with these prereqs */ - struct SrcList_item *pSrc, /* The FROM clause term that is the vtab */ - ExprList *pOrderBy, /* The ORDER BY clause */ + SrcItem *pSrc, /* The FROM clause term that is the vtab */ u16 *pmNoOmit /* Mask of terms not to omit */ ){ int i, j; int nTerm; + Parse *pParse = pWInfo->pParse; struct sqlite3_index_constraint *pIdxCons; struct sqlite3_index_orderby *pIdxOrderBy; struct sqlite3_index_constraint_usage *pUsage; @@ -137035,10 +160520,21 @@ static sqlite3_index_info *allocateIndexInfo( int nOrderBy; sqlite3_index_info *pIdxInfo; u16 mNoOmit = 0; + const Table *pTab; + int eDistinct = 0; + ExprList *pOrderBy = pWInfo->pOrderBy; - /* Count the number of possible WHERE clause constraints referring - ** to this virtual table */ + assert( pSrc!=0 ); + pTab = pSrc->pTab; + assert( pTab!=0 ); + assert( IsVirtual(pTab) ); + + /* Find all WHERE clause constraints referring to this virtual table. + ** Mark each term with the TERM_OK flag. Set nTerm to the number of + ** terms found. + */ for(i=nTerm=0, pTerm=pWC->a; inTerm; i++, pTerm++){ + pTerm->wtFlags &= ~TERM_OK; if( pTerm->leftCursor != pSrc->iCursor ) continue; if( pTerm->prereqRight & mUnusable ) continue; assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) ); @@ -137048,11 +160544,20 @@ static sqlite3_index_info *allocateIndexInfo( testcase( pTerm->eOperator & WO_ALL ); if( (pTerm->eOperator & ~(WO_EQUIV))==0 ) continue; if( pTerm->wtFlags & TERM_VNULL ) continue; - assert( pTerm->u.leftColumn>=(-1) ); + + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); + assert( pTerm->u.x.leftColumn>=XN_ROWID ); + assert( pTerm->u.x.leftColumnnCol ); + if( (pSrc->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))!=0 + && !constraintCompatibleWithOuterJoin(pTerm,pSrc) + ){ + continue; + } nTerm++; + pTerm->wtFlags |= TERM_OK; } - /* If the ORDER BY clause contains only columns in the current + /* If the ORDER BY clause contains only columns in the current ** virtual table then allocate space for the aOrderBy part of ** the sqlite3_index_info structure. */ @@ -137061,10 +160566,49 @@ static sqlite3_index_info *allocateIndexInfo( int n = pOrderBy->nExpr; for(i=0; ia[i].pExpr; - if( pExpr->op!=TK_COLUMN || pExpr->iTable!=pSrc->iCursor ) break; + Expr *pE2; + + /* Skip over constant terms in the ORDER BY clause */ + if( sqlite3ExprIsConstant(pExpr) ){ + continue; + } + + /* Virtual tables are unable to deal with NULLS FIRST */ + if( pOrderBy->a[i].fg.sortFlags & KEYINFO_ORDER_BIGNULL ) break; + + /* First case - a direct column references without a COLLATE operator */ + if( pExpr->op==TK_COLUMN && pExpr->iTable==pSrc->iCursor ){ + assert( pExpr->iColumn>=XN_ROWID && pExpr->iColumnnCol ); + continue; + } + + /* 2nd case - a column reference with a COLLATE operator. Only match + ** of the COLLATE operator matches the collation of the column. */ + if( pExpr->op==TK_COLLATE + && (pE2 = pExpr->pLeft)->op==TK_COLUMN + && pE2->iTable==pSrc->iCursor + ){ + const char *zColl; /* The collating sequence name */ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + assert( pExpr->u.zToken!=0 ); + assert( pE2->iColumn>=XN_ROWID && pE2->iColumnnCol ); + pExpr->iColumn = pE2->iColumn; + if( pE2->iColumn<0 ) continue; /* Collseq does not matter for rowid */ + zColl = sqlite3ColumnColl(&pTab->aCol[pE2->iColumn]); + if( zColl==0 ) zColl = sqlite3StrBINARY; + if( sqlite3_stricmp(pExpr->u.zToken, zColl)==0 ) continue; + } + + /* No matches cause a break out of the loop */ + break; } - if( i==n){ + if( i==n ){ nOrderBy = n; + if( (pWInfo->wctrlFlags & WHERE_DISTINCTBY) ){ + eDistinct = 2 + ((pWInfo->wctrlFlags & WHERE_SORTBYGROUP)!=0); + }else if( pWInfo->wctrlFlags & WHERE_GROUPBY ){ + eDistinct = 1; + } } } @@ -137072,46 +160616,35 @@ static sqlite3_index_info *allocateIndexInfo( */ pIdxInfo = sqlite3DbMallocZero(pParse->db, sizeof(*pIdxInfo) + (sizeof(*pIdxCons) + sizeof(*pUsage))*nTerm - + sizeof(*pIdxOrderBy)*nOrderBy + sizeof(*pHidden) ); + + sizeof(*pIdxOrderBy)*nOrderBy + sizeof(*pHidden) + + sizeof(sqlite3_value*)*nTerm ); if( pIdxInfo==0 ){ sqlite3ErrorMsg(pParse, "out of memory"); return 0; } - - /* Initialize the structure. The sqlite3_index_info structure contains - ** many fields that are declared "const" to prevent xBestIndex from - ** changing them. We have to do some funky casting in order to - ** initialize those fields. - */ pHidden = (struct HiddenIndexInfo*)&pIdxInfo[1]; - pIdxCons = (struct sqlite3_index_constraint*)&pHidden[1]; + pIdxCons = (struct sqlite3_index_constraint*)&pHidden->aRhs[nTerm]; pIdxOrderBy = (struct sqlite3_index_orderby*)&pIdxCons[nTerm]; pUsage = (struct sqlite3_index_constraint_usage*)&pIdxOrderBy[nOrderBy]; - *(int*)&pIdxInfo->nConstraint = nTerm; - *(int*)&pIdxInfo->nOrderBy = nOrderBy; - *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint = pIdxCons; - *(struct sqlite3_index_orderby**)&pIdxInfo->aOrderBy = pIdxOrderBy; - *(struct sqlite3_index_constraint_usage**)&pIdxInfo->aConstraintUsage = - pUsage; - + pIdxInfo->aConstraint = pIdxCons; + pIdxInfo->aOrderBy = pIdxOrderBy; + pIdxInfo->aConstraintUsage = pUsage; pHidden->pWC = pWC; pHidden->pParse = pParse; + pHidden->eDistinct = eDistinct; + pHidden->mIn = 0; for(i=j=0, pTerm=pWC->a; inTerm; i++, pTerm++){ u16 op; - if( pTerm->leftCursor != pSrc->iCursor ) continue; - if( pTerm->prereqRight & mUnusable ) continue; - assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) ); - testcase( pTerm->eOperator & WO_IN ); - testcase( pTerm->eOperator & WO_IS ); - testcase( pTerm->eOperator & WO_ISNULL ); - testcase( pTerm->eOperator & WO_ALL ); - if( (pTerm->eOperator & ~(WO_EQUIV))==0 ) continue; - if( pTerm->wtFlags & TERM_VNULL ) continue; - assert( pTerm->u.leftColumn>=(-1) ); - pIdxCons[j].iColumn = pTerm->u.leftColumn; + if( (pTerm->wtFlags & TERM_OK)==0 ) continue; + pIdxCons[j].iColumn = pTerm->u.x.leftColumn; pIdxCons[j].iTermOffset = i; op = pTerm->eOperator & WO_ALL; - if( op==WO_IN ) op = WO_EQ; + if( op==WO_IN ){ + if( (pTerm->wtFlags & TERM_SLICE)==0 ){ + pHidden->mIn |= SMASKBIT32(j); + } + op = WO_EQ; + } if( op==WO_AUX ){ pIdxCons[j].op = pTerm->eMatchOp; }else if( op & (WO_ISNULL|WO_IS) ){ @@ -137133,9 +160666,10 @@ static sqlite3_index_info *allocateIndexInfo( assert( pTerm->eOperator&(WO_IN|WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE|WO_AUX) ); if( op & (WO_LT|WO_LE|WO_GT|WO_GE) - && sqlite3ExprIsVector(pTerm->pExpr->pRight) + && sqlite3ExprIsVector(pTerm->pExpr->pRight) ){ - if( i<16 ) mNoOmit |= (1 << i); + testcase( j!=i ); + if( j<16 ) mNoOmit |= (1 << j); if( op==WO_LT ) pIdxCons[j].op = WO_LE; if( op==WO_GT ) pIdxCons[j].op = WO_GE; } @@ -137143,25 +160677,53 @@ static sqlite3_index_info *allocateIndexInfo( j++; } - for(i=0; inConstraint = j; + for(i=j=0; ia[i].pExpr; - pIdxOrderBy[i].iColumn = pExpr->iColumn; - pIdxOrderBy[i].desc = pOrderBy->a[i].sortOrder; + if( sqlite3ExprIsConstant(pExpr) ) continue; + assert( pExpr->op==TK_COLUMN + || (pExpr->op==TK_COLLATE && pExpr->pLeft->op==TK_COLUMN + && pExpr->iColumn==pExpr->pLeft->iColumn) ); + pIdxOrderBy[j].iColumn = pExpr->iColumn; + pIdxOrderBy[j].desc = pOrderBy->a[i].fg.sortFlags & KEYINFO_ORDER_DESC; + j++; } + pIdxInfo->nOrderBy = j; *pmNoOmit = mNoOmit; return pIdxInfo; } +/* +** Free an sqlite3_index_info structure allocated by allocateIndexInfo() +** and possibly modified by xBestIndex methods. +*/ +static void freeIndexInfo(sqlite3 *db, sqlite3_index_info *pIdxInfo){ + HiddenIndexInfo *pHidden; + int i; + assert( pIdxInfo!=0 ); + pHidden = (HiddenIndexInfo*)&pIdxInfo[1]; + assert( pHidden->pParse!=0 ); + assert( pHidden->pParse->db==db ); + for(i=0; inConstraint; i++){ + sqlite3ValueFree(pHidden->aRhs[i]); /* IMP: R-14553-25174 */ + pHidden->aRhs[i] = 0; + } + sqlite3DbFree(db, pIdxInfo); +} + /* ** The table object reference passed as the second argument to this function ** must represent a virtual table. This function invokes the xBestIndex() ** method of the virtual table with the sqlite3_index_info object that ** comes in as the 3rd argument to this function. ** -** If an error occurs, pParse is populated with an error message and a -** non-zero value is returned. Otherwise, 0 is returned and the output -** part of the sqlite3_index_info structure is left populated. +** If an error occurs, pParse is populated with an error message and an +** appropriate error code is returned. A return of SQLITE_CONSTRAINT from +** xBestIndex is not considered an error. SQLITE_CONSTRAINT indicates that +** the current configuration of "unusable" flags in sqlite3_index_info can +** not result in a valid plan. ** ** Whether or not an error is returned, it is the responsibility of the ** caller to eventually free p->idxStr if p->needToFreeIdxStr indicates @@ -137171,11 +160733,13 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ sqlite3_vtab *pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab; int rc; - TRACE_IDX_INPUTS(p); + whereTraceIndexInfoInputs(p); + pParse->db->nSchemaLock++; rc = pVtab->pModule->xBestIndex(pVtab, p); - TRACE_IDX_OUTPUTS(p); + pParse->db->nSchemaLock--; + whereTraceIndexInfoOutputs(p); - if( rc!=SQLITE_OK ){ + if( rc!=SQLITE_OK && rc!=SQLITE_CONSTRAINT ){ if( rc==SQLITE_NOMEM ){ sqlite3OomFault(pParse->db); }else if( !pVtab->zErrMsg ){ @@ -137184,25 +160748,16 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ sqlite3ErrorMsg(pParse, "%s", pVtab->zErrMsg); } } + if( pTab->u.vtab.p->bAllSchemas ){ + sqlite3VtabUsesAllSchemas(pParse); + } sqlite3_free(pVtab->zErrMsg); pVtab->zErrMsg = 0; - -#if 0 - /* This error is now caught by the caller. - ** Search for "xBestIndex malfunction" below */ - for(i=0; inConstraint; i++){ - if( !p->aConstraint[i].usable && p->aConstraintUsage[i].argvIndex>0 ){ - sqlite3ErrorMsg(pParse, - "table %s: xBestIndex returned an invalid plan", pTab->zName); - } - } -#endif - - return pParse->nErr; + return rc; } #endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Estimate the location of a particular key among all keys in an ** index. Store the results in aStat as follows: @@ -137213,8 +160768,8 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ ** Return the index of the sample that is the smallest sample that ** is greater than or equal to pRec. Note that this index is not an index ** into the aSample[] array - it is an index into a virtual set of samples -** based on the contents of aSample[] and the number of fields in record -** pRec. +** based on the contents of aSample[] and the number of fields in record +** pRec. */ static int whereKeyStats( Parse *pParse, /* Database connection */ @@ -137238,7 +160793,8 @@ static int whereKeyStats( #endif assert( pRec!=0 ); assert( pIdx->nSample>0 ); - assert( pRec->nField>0 && pRec->nField<=pIdx->nSampleCol ); + assert( pRec->nField>0 ); + /* Do a binary search to find the first sample greater than or equal ** to pRec. If pRec contains a single field, the set of samples to search @@ -137250,41 +160806,46 @@ static int whereKeyStats( ** consider prefixes of those samples. For example, if the set of samples ** in aSample is: ** - ** aSample[0] = (a, 5) - ** aSample[1] = (a, 10) - ** aSample[2] = (b, 5) - ** aSample[3] = (c, 100) + ** aSample[0] = (a, 5) + ** aSample[1] = (a, 10) + ** aSample[2] = (b, 5) + ** aSample[3] = (c, 100) ** aSample[4] = (c, 105) ** - ** Then the search space should ideally be the samples above and the - ** unique prefixes [a], [b] and [c]. But since that is hard to organize, + ** Then the search space should ideally be the samples above and the + ** unique prefixes [a], [b] and [c]. But since that is hard to organize, ** the code actually searches this set: ** - ** 0: (a) - ** 1: (a, 5) - ** 2: (a, 10) - ** 3: (a, 10) - ** 4: (b) - ** 5: (b, 5) - ** 6: (c) - ** 7: (c, 100) + ** 0: (a) + ** 1: (a, 5) + ** 2: (a, 10) + ** 3: (a, 10) + ** 4: (b) + ** 5: (b, 5) + ** 6: (c) + ** 7: (c, 100) ** 8: (c, 105) ** 9: (c, 105) ** ** For each sample in the aSample[] array, N samples are present in the - ** effective sample array. In the above, samples 0 and 1 are based on + ** effective sample array. In the above, samples 0 and 1 are based on ** sample aSample[0]. Samples 2 and 3 on aSample[1] etc. ** ** Often, sample i of each block of N effective samples has (i+1) fields. ** Except, each sample may be extended to ensure that it is greater than or - ** equal to the previous sample in the array. For example, in the above, - ** sample 2 is the first sample of a block of N samples, so at first it - ** appears that it should be 1 field in size. However, that would make it - ** smaller than sample 1, so the binary search would not work. As a result, - ** it is extended to two fields. The duplicates that this creates do not + ** equal to the previous sample in the array. For example, in the above, + ** sample 2 is the first sample of a block of N samples, so at first it + ** appears that it should be 1 field in size. However, that would make it + ** smaller than sample 1, so the binary search would not work. As a result, + ** it is extended to two fields. The duplicates that this creates do not ** cause any problems. */ - nField = pRec->nField; + if( !HasRowid(pIdx->pTable) && IsPrimaryKeyIndex(pIdx) ){ + nField = pIdx->nKeyCol; + }else{ + nField = pIdx->nColumn; + } + nField = MIN(pRec->nField, nField); iCol = 0; iSample = pIdx->nSample * nField; do{ @@ -137295,7 +160856,7 @@ static int whereKeyStats( iSamp = iTest / nField; if( iSamp>0 ){ /* The proposed effective sample is a prefix of sample aSample[iSamp]. - ** Specifically, the shortest prefix of at least (1 + iTest%nField) + ** Specifically, the shortest prefix of at least (1 + iTest%nField) ** fields that is greater than the previous effective sample. */ for(n=(iTest % nField) + 1; nnSample ); assert( iCol==nField-1 ); pRec->nField = nField; - assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec) - || pParse->db->mallocFailed + assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec) + || pParse->db->mallocFailed ); }else{ /* Unless i==pIdx->nSample, indicating that pRec is larger than @@ -137339,7 +160900,7 @@ static int whereKeyStats( ** (iCol+1) field prefix of sample i. */ assert( i<=pIdx->nSample && i>=0 ); pRec->nField = iCol+1; - assert( i==pIdx->nSample + assert( i==pIdx->nSample || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0 || pParse->db->mallocFailed ); @@ -137350,12 +160911,12 @@ static int whereKeyStats( if( iCol>0 ){ pRec->nField = iCol; assert( sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)<=0 - || pParse->db->mallocFailed ); + || pParse->db->mallocFailed || CORRUPT_DB ); } if( i>0 ){ pRec->nField = nField; assert( sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0 - || pParse->db->mallocFailed ); + || pParse->db->mallocFailed || CORRUPT_DB ); } } } @@ -137367,12 +160928,12 @@ static int whereKeyStats( aStat[0] = aSample[i].anLt[iCol]; aStat[1] = aSample[i].anEq[iCol]; }else{ - /* At this point, the (iCol+1) field prefix of aSample[i] is the first + /* At this point, the (iCol+1) field prefix of aSample[i] is the first ** sample that is greater than pRec. Or, if i==pIdx->nSample then pRec ** is larger than all samples in the array. */ tRowcnt iUpper, iGap; if( i>=pIdx->nSample ){ - iUpper = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]); + iUpper = pIdx->nRowEst0; }else{ iUpper = aSample[i].anLt[iCol]; } @@ -137395,11 +160956,11 @@ static int whereKeyStats( pRec->nField = nField; return i; } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ /* ** If it is not NULL, pTerm is a term that provides an upper or lower -** bound on a range scan. Without considering pTerm, it is estimated +** bound on a range scan. Without considering pTerm, it is estimated ** that the scan will visit nNew rows. This function returns the number ** estimated to be visited after taking pTerm into account. ** @@ -137421,7 +160982,7 @@ static LogEst whereRangeAdjust(WhereTerm *pTerm, LogEst nNew){ } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Return the affinity for a single column of an index. */ @@ -137430,24 +160991,25 @@ SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3 *db, Index *pIdx, int iCo if( !pIdx->zColAff ){ if( sqlite3IndexAffinityStr(db, pIdx)==0 ) return SQLITE_AFF_BLOB; } + assert( pIdx->zColAff[iCol]!=0 ); return pIdx->zColAff[iCol]; } #endif -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -/* +#ifdef SQLITE_ENABLE_STAT4 +/* ** This function is called to estimate the number of rows visited by a ** range-scan on a skip-scan index. For example: ** ** CREATE INDEX i1 ON t1(a, b, c); ** SELECT * FROM t1 WHERE a=? AND c BETWEEN ? AND ?; ** -** Value pLoop->nOut is currently set to the estimated number of rows -** visited for scanning (a=? AND b=?). This function reduces that estimate +** Value pLoop->nOut is currently set to the estimated number of rows +** visited for scanning (a=? AND b=?). This function reduces that estimate ** by some factor to account for the (c BETWEEN ? AND ?) expression based -** on the stat4 data for the index. this scan will be peformed multiple -** times (once for each (a,b) combination that matches a=?) is dealt with +** on the stat4 data for the index. this scan will be performed multiple +** times (once for each (a,b) combination that matches a=?) is dealt with ** by the caller. ** ** It does this by scanning through all stat4 samples, comparing values @@ -137468,7 +161030,7 @@ SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3 *db, Index *pIdx, int iCo ** estimate of the number of rows delivered remains unchanged), *pbDone ** is left as is. ** -** If an error occurs, an SQLite error code is returned. Otherwise, +** If an error occurs, an SQLite error code is returned. Otherwise, ** SQLITE_OK. */ static int whereRangeSkipScanEst( @@ -137486,7 +161048,7 @@ static int whereRangeSkipScanEst( int rc = SQLITE_OK; u8 aff = sqlite3IndexColumnAffinity(db, p, nEq); CollSeq *pColl; - + sqlite3_value *p1 = 0; /* Value extracted from pLower */ sqlite3_value *p2 = 0; /* Value extracted from pUpper */ sqlite3_value *pVal = 0; /* Value extracted from record */ @@ -137518,7 +161080,7 @@ static int whereRangeSkipScanEst( nDiff = (nUpper - nLower); if( nDiff<=0 ) nDiff = 1; - /* If there is both an upper and lower bound specified, and the + /* If there is both an upper and lower bound specified, and the ** comparisons indicate that they are close together, use the fallback ** method (assume that the scan visits 1/64 of the rows) for estimating ** the number of rows visited. Otherwise, estimate the number of rows @@ -137527,7 +161089,7 @@ static int whereRangeSkipScanEst( int nAdjust = (sqlite3LogEst(p->nSample) - sqlite3LogEst(nDiff)); pLoop->nOut -= nAdjust; *pbDone = 1; - WHERETRACE(0x10, ("range skip-scan regions: %u..%u adjust=%d est=%d\n", + WHERETRACE(0x20, ("range skip-scan regions: %u..%u adjust=%d est=%d\n", nLower, nUpper, nAdjust*-1, pLoop->nOut)); } @@ -137541,7 +161103,7 @@ static int whereRangeSkipScanEst( return rc; } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ /* ** This function is used to estimate the number of rows that will be visited @@ -137565,7 +161127,7 @@ static int whereRangeSkipScanEst( ** ** ... FROM t1 WHERE a = ? AND b > ? AND b < ? ... ** -** then nEq is set to 1 (as the range restricted column, b, is the second +** then nEq is set to 1 (as the range restricted column, b, is the second ** left-most column of the index). Or, if the query is: ** ** ... FROM t1 WHERE a > ? AND a < ? ... @@ -137573,13 +161135,13 @@ static int whereRangeSkipScanEst( ** then nEq is set to 0. ** ** When this function is called, *pnOut is set to the sqlite3LogEst() of the -** number of rows that the index scan is expected to visit without -** considering the range constraints. If nEq is 0, then *pnOut is the number of +** number of rows that the index scan is expected to visit without +** considering the range constraints. If nEq is 0, then *pnOut is the number of ** rows in the index. Assuming no error occurs, *pnOut is adjusted (reduced) ** to account for the range constraints pLower and pUpper. -** +** ** In the absence of sqlite_stat4 ANALYZE data, or if such data cannot be -** used, a single range inequality reduces the search space by a factor of 4. +** used, a single range inequality reduces the search space by a factor of 4. ** and a pair of constraints (x>? AND xnOut; LogEst nNew; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 Index *p = pLoop->u.btree.pIndex; int nEq = pLoop->u.btree.nEq; - if( p->nSample>0 && nEqnSampleCol ){ + if( p->nSample>0 && ALWAYS(nEqnSampleCol) + && OptimizationEnabled(pParse->db, SQLITE_Stat4) + ){ if( nEq==pBuilder->nRecValid ){ UnpackedRecord *pRec = pBuilder->pRec; tRowcnt a[2]; int nBtm = pLoop->u.btree.nBtm; int nTop = pLoop->u.btree.nTop; - /* Variable iLower will be set to the estimate of the number of rows in + /* Variable iLower will be set to the estimate of the number of rows in ** the index that are less than the lower bound of the range query. The ** lower bound being the concatenation of $P and $L, where $P is the ** key-prefix formed by the nEq values matched against the nEq left-most @@ -137614,7 +161178,7 @@ static int whereRangeScanEst( ** Or, if pLower is NULL or $L cannot be extracted from it (because it ** is not a simple variable or literal value), the lower bound of the ** range is $P. Due to a quirk in the way whereKeyStats() works, even - ** if $L is available, whereKeyStats() is called for both ($P) and + ** if $L is available, whereKeyStats() is called for both ($P) and ** ($P:$L) and the larger of the two returned values is used. ** ** Similarly, iUpper is to be set to the estimate of the number of rows @@ -137638,7 +161202,7 @@ static int whereRangeScanEst( iLower = 0; iUpper = p->nRowEst0; }else{ - /* Note: this call could be optimized away - since the same values must + /* Note: this call could be optimized away - since the same values must ** have been requested when testing key $P in whereEqualScanEst(). */ whereKeyStats(pParse, p, pRec, 0, a); iLower = a[0]; @@ -137695,7 +161259,7 @@ static int whereRangeScanEst( /* TUNING: If both iUpper and iLower are derived from the same ** sample, then assume they are 4x more selective. This brings ** the estimated selectivity more in line with what it would be - ** if estimated without the use of STAT3/4 tables. */ + ** if estimated without the use of STAT4 tables. */ if( iLwrIdx==iUprIdx ) nNew -= 20; assert( 20==sqlite3LogEst(4) ); }else{ nNew = 10; assert( 10==sqlite3LogEst(2) ); @@ -137703,7 +161267,7 @@ static int whereRangeScanEst( if( nNewwtFlags & TERM_VNULL)==0 ); + assert( pUpper==0 || (pUpper->wtFlags & TERM_VNULL)==0 || pParse->nErr>0 ); nNew = whereRangeAdjust(pLower, nOut); nNew = whereRangeAdjust(pUpper, nNew); @@ -137726,7 +161290,7 @@ static int whereRangeScanEst( ** reduced by an additional 75%. This means that, by default, an open-ended ** range query (e.g. col > ?) is assumed to match 1/4 of the rows in the ** index. While a closed range (e.g. col BETWEEN ? AND ?) is estimated to - ** match 1/64 of the index. */ + ** match 1/64 of the index. */ if( pLower && pLower->truthProb>0 && pUpper && pUpper->truthProb>0 ){ nNew -= 20; } @@ -137736,7 +161300,7 @@ static int whereRangeScanEst( if( nNewnOut>nOut ){ - WHERETRACE(0x10,("Range scan lowers nOut from %d to %d\n", + WHERETRACE(0x20,("Range scan lowers nOut from %d to %d\n", pLoop->nOut, nOut)); } #endif @@ -137744,16 +161308,16 @@ static int whereRangeScanEst( return rc; } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Estimate the number of rows that will be returned based on ** an equality constraint x=VALUE and where that VALUE occurs in ** the histogram data. This only works when x is the left-most -** column of an index and sqlite_stat3 histogram data is available +** column of an index and sqlite_stat4 histogram data is available ** for that index. When pExpr==NULL that means the constraint is ** "x IS NULL" instead of "x=VALUE". ** -** Write the estimated row count into *pnRow and return SQLITE_OK. +** Write the estimated row count into *pnRow and return SQLITE_OK. ** If unable to make an estimate, leave *pnRow unchanged and return ** non-zero. ** @@ -137801,15 +161365,15 @@ static int whereEqualScanEst( pBuilder->nRecValid = nEq; whereKeyStats(pParse, p, pRec, 0, a); - WHERETRACE(0x10,("equality scan regions %s(%d): %d\n", + WHERETRACE(0x20,("equality scan regions %s(%d): %d\n", p->zName, nEq-1, (int)a[1])); *pnRow = a[1]; - + return rc; } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 /* ** Estimate the number of rows that will be returned based on ** an IN constraint where the right-hand side of the IN operator @@ -137817,7 +161381,7 @@ static int whereEqualScanEst( ** ** WHERE x IN (1,2,3,4) ** -** Write the estimated row count into *pnRow and return SQLITE_OK. +** Write the estimated row count into *pnRow and return SQLITE_OK. ** If unable to make an estimate, leave *pnRow unchanged and return ** non-zero. ** @@ -137849,48 +161413,57 @@ static int whereInScanEst( } if( rc==SQLITE_OK ){ - if( nRowEst > nRow0 ) nRowEst = nRow0; + if( nRowEst > (tRowcnt)nRow0 ) nRowEst = nRow0; *pnRow = nRowEst; - WHERETRACE(0x10,("IN row estimate: est=%d\n", nRowEst)); + WHERETRACE(0x20,("IN row estimate: est=%d\n", nRowEst)); } assert( pBuilder->nRecValid==nRecValid ); return rc; } -#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ +#endif /* SQLITE_ENABLE_STAT4 */ #ifdef WHERETRACE_ENABLED /* ** Print the content of a WhereTerm object */ -static void whereTermPrint(WhereTerm *pTerm, int iTerm){ +SQLITE_PRIVATE void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm){ if( pTerm==0 ){ sqlite3DebugPrintf("TERM-%-3d NULL\n", iTerm); }else{ - char zType[4]; + char zType[8]; char zLeft[50]; - memcpy(zType, "...", 4); + memcpy(zType, "....", 5); if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V'; if( pTerm->eOperator & WO_EQUIV ) zType[1] = 'E'; - if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L'; + if( ExprHasProperty(pTerm->pExpr, EP_OuterON) ) zType[2] = 'L'; + if( pTerm->wtFlags & TERM_CODED ) zType[3] = 'C'; if( pTerm->eOperator & WO_SINGLE ){ + assert( (pTerm->eOperator & (WO_OR|WO_AND))==0 ); sqlite3_snprintf(sizeof(zLeft),zLeft,"left={%d:%d}", - pTerm->leftCursor, pTerm->u.leftColumn); + pTerm->leftCursor, pTerm->u.x.leftColumn); }else if( (pTerm->eOperator & WO_OR)!=0 && pTerm->u.pOrInfo!=0 ){ - sqlite3_snprintf(sizeof(zLeft),zLeft,"indexable=0x%lld", + sqlite3_snprintf(sizeof(zLeft),zLeft,"indexable=0x%llx", pTerm->u.pOrInfo->indexable); }else{ sqlite3_snprintf(sizeof(zLeft),zLeft,"left=%d", pTerm->leftCursor); } sqlite3DebugPrintf( - "TERM-%-3d %p %s %-12s prob=%-3d op=0x%03x wtFlags=0x%04x", - iTerm, pTerm, zType, zLeft, pTerm->truthProb, - pTerm->eOperator, pTerm->wtFlags); - if( pTerm->iField ){ - sqlite3DebugPrintf(" iField=%d\n", pTerm->iField); - }else{ - sqlite3DebugPrintf("\n"); + "TERM-%-3d %p %s %-12s op=%03x wtFlags=%04x", + iTerm, pTerm, zType, zLeft, pTerm->eOperator, pTerm->wtFlags); + /* The 0x10000 .wheretrace flag causes extra information to be + ** shown about each Term */ + if( sqlite3WhereTrace & 0x10000 ){ + sqlite3DebugPrintf(" prob=%-3d prereq=%llx,%llx", + pTerm->truthProb, (u64)pTerm->prereqAll, (u64)pTerm->prereqRight); } + if( (pTerm->eOperator & (WO_OR|WO_AND))==0 && pTerm->u.x.iField ){ + sqlite3DebugPrintf(" iField=%d", pTerm->u.x.iField); + } + if( pTerm->iParent>=0 ){ + sqlite3DebugPrintf(" iParent=%d", pTerm->iParent); + } + sqlite3DebugPrintf("\n"); sqlite3TreeViewExpr(0, pTerm->pExpr, 0); } } @@ -137903,7 +161476,7 @@ static void whereTermPrint(WhereTerm *pTerm, int iTerm){ SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC){ int i; for(i=0; inTerm; i++){ - whereTermPrint(&pWC->a[i], i); + sqlite3WhereTermPrint(&pWC->a[i], i); } } #endif @@ -137912,10 +161485,10 @@ SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC){ /* ** Print a WhereLoop object for debugging purposes */ -static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){ +SQLITE_PRIVATE void sqlite3WhereLoopPrint(WhereLoop *p, WhereClause *pWC){ WhereInfo *pWInfo = pWC->pWInfo; int nb = 1+(pWInfo->pTabList->nSrc+3)/4; - struct SrcList_item *pItem = pWInfo->pTabList->a + p->iTab; + SrcItem *pItem = pWInfo->pTabList->a + p->iTab; Table *pTab = pItem->pTab; Bitmask mAll = (((Bitmask)1)<<(nb*4)) - 1; sqlite3DebugPrintf("%c%2d.%0*llx.%0*llx", p->cId, @@ -137937,7 +161510,7 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){ }else{ char *z; if( p->u.vtab.idxStr ){ - z = sqlite3_mprintf("(%d,\"%s\",%x)", + z = sqlite3_mprintf("(%d,\"%s\",%#x)", p->u.vtab.idxNum, p->u.vtab.idxStr, p->u.vtab.omitMask); }else{ z = sqlite3_mprintf("(%d,%x)", p->u.vtab.idxNum, p->u.vtab.omitMask); @@ -137946,15 +161519,15 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){ sqlite3_free(z); } if( p->wsFlags & WHERE_SKIPSCAN ){ - sqlite3DebugPrintf(" f %05x %d-%d", p->wsFlags, p->nLTerm,p->nSkip); + sqlite3DebugPrintf(" f %06x %d-%d", p->wsFlags, p->nLTerm,p->nSkip); }else{ - sqlite3DebugPrintf(" f %05x N %d", p->wsFlags, p->nLTerm); + sqlite3DebugPrintf(" f %06x N %d", p->wsFlags, p->nLTerm); } sqlite3DebugPrintf(" cost %d,%d,%d\n", p->rSetup, p->rRun, p->nOut); - if( p->nLTerm && (sqlite3WhereTrace & 0x100)!=0 ){ + if( p->nLTerm && (sqlite3WhereTrace & 0x4000)!=0 ){ int i; for(i=0; inLTerm; i++){ - whereTermPrint(p->aLTerm[i], i); + sqlite3WhereTermPrint(p->aLTerm[i], i); } } } @@ -137989,12 +161562,18 @@ static void whereLoopClearUnion(sqlite3 *db, WhereLoop *p){ } /* -** Deallocate internal memory used by a WhereLoop object +** Deallocate internal memory used by a WhereLoop object. Leave the +** object in an initialized state, as if it had been newly allocated. */ static void whereLoopClear(sqlite3 *db, WhereLoop *p){ - if( p->aLTerm!=p->aLTermSpace ) sqlite3DbFreeNN(db, p->aLTerm); + if( p->aLTerm!=p->aLTermSpace ){ + sqlite3DbFreeNN(db, p->aLTerm); + p->aLTerm = p->aLTermSpace; + p->nLSlot = ArraySize(p->aLTermSpace); + } whereLoopClearUnion(db, p); - whereLoopInit(p); + p->nLTerm = 0; + p->wsFlags = 0; } /* @@ -138018,8 +161597,10 @@ static int whereLoopResize(sqlite3 *db, WhereLoop *p, int n){ */ static int whereLoopXfer(sqlite3 *db, WhereLoop *pTo, WhereLoop *pFrom){ whereLoopClearUnion(db, pTo); - if( whereLoopResize(db, pTo, pFrom->nLTerm) ){ - memset(&pTo->u, 0, sizeof(pTo->u)); + if( pFrom->nLTerm > pTo->nLSlot + && whereLoopResize(db, pTo, pFrom->nLTerm) + ){ + memset(pTo, 0, WHERE_LOOP_XFER_SZ); return SQLITE_NOMEM_BKPT; } memcpy(pTo, pFrom, WHERE_LOOP_XFER_SZ); @@ -138036,35 +161617,36 @@ static int whereLoopXfer(sqlite3 *db, WhereLoop *pTo, WhereLoop *pFrom){ ** Delete a WhereLoop object */ static void whereLoopDelete(sqlite3 *db, WhereLoop *p){ + assert( db!=0 ); whereLoopClear(db, p); - sqlite3DbFreeNN(db, p); + sqlite3DbNNFreeNN(db, p); } /* ** Free a WhereInfo structure */ static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){ - int i; assert( pWInfo!=0 ); - for(i=0; inLevel; i++){ - WhereLevel *pLevel = &pWInfo->a[i]; - if( pLevel->pWLoop && (pLevel->pWLoop->wsFlags & WHERE_IN_ABLE) ){ - sqlite3DbFree(db, pLevel->u.in.aInLoop); - } - } + assert( db!=0 ); sqlite3WhereClauseClear(&pWInfo->sWC); while( pWInfo->pLoops ){ WhereLoop *p = pWInfo->pLoops; pWInfo->pLoops = p->pNextLoop; whereLoopDelete(db, p); } - sqlite3DbFreeNN(db, pWInfo); + while( pWInfo->pMemToFree ){ + WhereMemBlock *pNext = pWInfo->pMemToFree->pNext; + sqlite3DbNNFreeNN(db, pWInfo->pMemToFree); + pWInfo->pMemToFree = pNext; + } + sqlite3DbNNFreeNN(db, pWInfo); } /* ** Return TRUE if all of the following are true: ** -** (1) X has the same or lower cost that Y +** (1) X has the same or lower cost, or returns the same or fewer rows, +** than Y. ** (2) X uses fewer WHERE clause terms than Y ** (3) Every WHERE clause term used by X is also used by Y ** (4) X skips at least as many columns as Y @@ -138072,7 +161654,7 @@ static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){ ** ** Conditions (2) and (3) mean that X is a "proper subset" of Y. ** If X is a proper subset of Y then Y is a better choice and ought -** to have a lower cost. This routine returns TRUE when that cost +** to have a lower cost. This routine returns TRUE when that cost ** relationship is inverted and needs to be adjusted. Constraint (4) ** was added because if X uses skip-scan less than Y it still might ** deserve a lower cost even if it is a proper subset of Y. Constraint (5) @@ -138087,11 +161669,8 @@ static int whereLoopCheaperProperSubset( if( pX->nLTerm-pX->nSkip >= pY->nLTerm-pY->nSkip ){ return 0; /* X is not a subset of Y */ } + if( pX->rRun>pY->rRun && pX->nOut>pY->nOut ) return 0; if( pY->nSkip > pX->nSkip ) return 0; - if( pX->rRun >= pY->rRun ){ - if( pX->rRun > pY->rRun ) return 0; /* X costs more than Y */ - if( pX->nOut > pY->nOut ) return 0; /* X costs more than Y */ - } for(i=pX->nLTerm-1; i>=0; i--){ if( pX->aLTerm[i]==0 ) continue; for(j=pY->nLTerm-1; j>=0; j--){ @@ -138099,7 +161678,7 @@ static int whereLoopCheaperProperSubset( } if( j<0 ) return 0; /* X not a subset of Y since term X[i] not used by Y */ } - if( (pX->wsFlags&WHERE_IDX_ONLY)!=0 + if( (pX->wsFlags&WHERE_IDX_ONLY)!=0 && (pY->wsFlags&WHERE_IDX_ONLY)==0 ){ return 0; /* Constraint (5) */ } @@ -138107,8 +161686,8 @@ static int whereLoopCheaperProperSubset( } /* -** Try to adjust the cost of WhereLoop pTemplate upwards or downwards so -** that: +** Try to adjust the cost and number of output rows of WhereLoop pTemplate +** upwards or downwards so that: ** ** (1) pTemplate costs less than any other WhereLoops that are a proper ** subset of pTemplate @@ -138126,19 +161705,23 @@ static void whereLoopAdjustCost(const WhereLoop *p, WhereLoop *pTemplate){ if( p->iTab!=pTemplate->iTab ) continue; if( (p->wsFlags & WHERE_INDEXED)==0 ) continue; if( whereLoopCheaperProperSubset(p, pTemplate) ){ - /* Adjust pTemplate cost downward so that it is cheaper than its + /* Adjust pTemplate cost downward so that it is cheaper than its ** subset p. */ WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n", - pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut-1)); - pTemplate->rRun = p->rRun; - pTemplate->nOut = p->nOut - 1; + pTemplate->rRun, pTemplate->nOut, + MIN(p->rRun, pTemplate->rRun), + MIN(p->nOut - 1, pTemplate->nOut))); + pTemplate->rRun = MIN(p->rRun, pTemplate->rRun); + pTemplate->nOut = MIN(p->nOut - 1, pTemplate->nOut); }else if( whereLoopCheaperProperSubset(pTemplate, p) ){ /* Adjust pTemplate cost upward so that it is costlier than p since ** pTemplate is a proper subset of p */ WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n", - pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut+1)); - pTemplate->rRun = p->rRun; - pTemplate->nOut = p->nOut + 1; + pTemplate->rRun, pTemplate->nOut, + MAX(p->rRun, pTemplate->rRun), + MAX(p->nOut + 1, pTemplate->nOut))); + pTemplate->rRun = MAX(p->rRun, pTemplate->rRun); + pTemplate->nOut = MAX(p->nOut + 1, pTemplate->nOut); } } } @@ -138172,7 +161755,7 @@ static WhereLoop **whereLoopFindLesser( /* In the current implementation, the rSetup value is either zero ** or the cost of building an automatic index (NlogN) and the NlogN ** is the same for compatible WhereLoops. */ - assert( p->rSetup==0 || pTemplate->rSetup==0 + assert( p->rSetup==0 || pTemplate->rSetup==0 || p->rSetup==pTemplate->rSetup ); /* whereLoopAddBtree() always generates and inserts the automatic index @@ -138180,7 +161763,7 @@ static WhereLoop **whereLoopFindLesser( ** rSetup. Call this SETUP-INVARIANT */ assert( p->rSetup>=pTemplate->rSetup ); - /* Any loop using an appliation-defined index (or PRIMARY KEY or + /* Any loop using an application-defined index (or PRIMARY KEY or ** UNIQUE constraint) with one or more == constraints is better ** than an automatic index. Unless it is a skip-scan. */ if( (p->wsFlags & WHERE_AUTO_INDEX)!=0 @@ -138207,7 +161790,7 @@ static WhereLoop **whereLoopFindLesser( /* If pTemplate is always better than p, then cause p to be overwritten ** with pTemplate. pTemplate is better than p if: - ** (1) pTemplate has no more dependences than p, and + ** (1) pTemplate has no more dependencies than p, and ** (2) pTemplate has an equal or lower cost than p. */ if( (p->prereq & pTemplate->prereq)==pTemplate->prereq /* (1) */ @@ -138237,7 +161820,7 @@ static WhereLoop **whereLoopFindLesser( ** ** When accumulating multiple loops (when pBuilder->pOrSet is NULL) we ** still might overwrite similar loops with the new template if the -** new template is better. Loops may be overwritten if the following +** new template is better. Loops may be overwritten if the following ** conditions are met: ** ** (1) They have the same iTab. @@ -138251,6 +161834,16 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ sqlite3 *db = pWInfo->pParse->db; int rc; + /* Stop the search once we hit the query planner search limit */ + if( pBuilder->iPlanLimit==0 ){ + WHERETRACE(0xffffffff,("=== query planner search limit reached ===\n")); + if( pBuilder->pOrSet ) pBuilder->pOrSet->n = 0; + return SQLITE_DONE; + } + pBuilder->iPlanLimit--; + + whereLoopAdjustCost(pWInfo->pLoops, pTemplate); + /* If pBuilder->pOrSet is defined, then only keep track of the costs ** and prereqs. */ @@ -138265,7 +161858,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ #if WHERETRACE_ENABLED /* 0x8 */ if( sqlite3WhereTrace & 0x8 ){ sqlite3DebugPrintf(x?" or-%d: ":" or-X: ", n); - whereLoopPrint(pTemplate, pBuilder->pWC); + sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC); } #endif } @@ -138274,7 +161867,6 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ /* Look for an existing WhereLoop to replace with pTemplate */ - whereLoopAdjustCost(pWInfo->pLoops, pTemplate); ppPrev = whereLoopFindLesser(&pWInfo->pLoops, pTemplate); if( ppPrev==0 ){ @@ -138283,10 +161875,10 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ #if WHERETRACE_ENABLED /* 0x8 */ if( sqlite3WhereTrace & 0x8 ){ sqlite3DebugPrintf(" skip: "); - whereLoopPrint(pTemplate, pBuilder->pWC); + sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC); } #endif - return SQLITE_OK; + return SQLITE_OK; }else{ p = *ppPrev; } @@ -138299,12 +161891,12 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ if( sqlite3WhereTrace & 0x8 ){ if( p!=0 ){ sqlite3DebugPrintf("replace: "); - whereLoopPrint(p, pBuilder->pWC); + sqlite3WhereLoopPrint(p, pBuilder->pWC); sqlite3DebugPrintf(" with: "); }else{ sqlite3DebugPrintf(" add: "); } - whereLoopPrint(pTemplate, pBuilder->pWC); + sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC); } #endif if( p==0 ){ @@ -138316,7 +161908,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ }else{ /* We will be overwriting WhereLoop p[]. But before we do, first ** go through the rest of the list and delete any other entries besides - ** p[] that are also supplated by pTemplate */ + ** p[] that are also supplanted by pTemplate */ WhereLoop **ppTail = &p->pNextLoop; WhereLoop *pToDel; while( *ppTail ){ @@ -138328,7 +161920,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ #if WHERETRACE_ENABLED /* 0x8 */ if( sqlite3WhereTrace & 0x8 ){ sqlite3DebugPrintf(" delete: "); - whereLoopPrint(pToDel, pBuilder->pWC); + sqlite3WhereLoopPrint(pToDel, pBuilder->pWC); } #endif whereLoopDelete(db, pToDel); @@ -138337,7 +161929,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ rc = whereLoopXfer(db, p, pTemplate); if( (p->wsFlags & WHERE_VIRTUALTABLE)==0 ){ Index *pIndex = p->u.btree.pIndex; - if( pIndex && pIndex->tnum==0 ){ + if( pIndex && pIndex->idxType==SQLITE_IDXTYPE_IPK ){ p->u.btree.pIndex = 0; } } @@ -138380,14 +161972,15 @@ static void whereLoopOutputAdjust( ){ WhereTerm *pTerm, *pX; Bitmask notAllowed = ~(pLoop->prereq|pLoop->maskSelf); - int i, j, k; + int i, j; LogEst iReduce = 0; /* pLoop->nOut should not exceed nRow-iReduce */ assert( (pLoop->wsFlags & WHERE_AUTO_INDEX)==0 ); - for(i=pWC->nTerm, pTerm=pWC->a; i>0; i--, pTerm++){ - if( (pTerm->wtFlags & TERM_VIRTUAL)!=0 ) break; - if( (pTerm->prereqAll & pLoop->maskSelf)==0 ) continue; + for(i=pWC->nBase, pTerm=pWC->a; i>0; i--, pTerm++){ + assert( pTerm!=0 ); if( (pTerm->prereqAll & notAllowed)!=0 ) continue; + if( (pTerm->prereqAll & pLoop->maskSelf)==0 ) continue; + if( (pTerm->wtFlags & TERM_VIRTUAL)!=0 ) continue; for(j=pLoop->nLTerm-1; j>=0; j--){ pX = pLoop->aLTerm[j]; if( pX==0 ) continue; @@ -138395,6 +161988,24 @@ static void whereLoopOutputAdjust( if( pX->iParent>=0 && (&pWC->a[pX->iParent])==pTerm ) break; } if( j<0 ){ + sqlite3ProgressCheck(pWC->pWInfo->pParse); + if( pLoop->maskSelf==pTerm->prereqAll ){ + /* If there are extra terms in the WHERE clause not used by an index + ** that depend only on the table being scanned, and that will tend to + ** cause many rows to be omitted, then mark that table as + ** "self-culling". + ** + ** 2022-03-24: Self-culling only applies if either the extra terms + ** are straight comparison operators that are non-true with NULL + ** operand, or if the loop is not an OUTER JOIN. + */ + if( (pTerm->eOperator & 0x3f)!=0 + || (pWC->pWInfo->pTabList->a[pLoop->iTab].fg.jointype + & (JT_LEFT|JT_LTORJ))==0 + ){ + pLoop->wsFlags |= WHERE_SELFCULL; + } + } if( pTerm->truthProb<=0 ){ /* If a truth probability is specified using the likelihood() hints, ** then use the probability provided by the application. */ @@ -138403,23 +162014,31 @@ static void whereLoopOutputAdjust( /* In the absence of explicit truth probabilities, use heuristics to ** guess a reasonable truth probability. */ pLoop->nOut--; - if( pTerm->eOperator&(WO_EQ|WO_IS) ){ + if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 + && (pTerm->wtFlags & TERM_HIGHTRUTH)==0 /* tag-20200224-1 */ + ){ Expr *pRight = pTerm->pExpr->pRight; + int k = 0; testcase( pTerm->pExpr->op==TK_IS ); if( sqlite3ExprIsInteger(pRight, &k) && k>=(-1) && k<=1 ){ k = 10; }else{ k = 20; } - if( iReducewtFlags |= TERM_HEURTRUTH; + iReduce = k; + } } } } } - if( pLoop->nOut > nRow-iReduce ) pLoop->nOut = nRow - iReduce; + if( pLoop->nOut > nRow-iReduce ){ + pLoop->nOut = nRow - iReduce; + } } -/* +/* ** Term pTerm is a vector range comparison operation. The first comparison ** in the vector can be optimized using column nEq of the index. This ** function returns the total number of vector elements that can be used @@ -138448,14 +162067,17 @@ static int whereRangeVectorLen( nCmp = MIN(nCmp, (pIdx->nColumn - nEq)); for(i=1; ipExpr->pLeft->x.pList->a[i].pExpr; - Expr *pRhs = pTerm->pExpr->pRight; - if( pRhs->flags & EP_xIsSelect ){ + Expr *pLhs, *pRhs; + + assert( ExprUseXList(pTerm->pExpr->pLeft) ); + pLhs = pTerm->pExpr->pLeft->x.pList->a[i].pExpr; + pRhs = pTerm->pExpr->pRight; + if( ExprUseXSelect(pRhs) ){ pRhs = pRhs->x.pSelect->pEList->a[i].pExpr; }else{ pRhs = pRhs->x.pList->a[i].pExpr; @@ -138465,9 +162087,9 @@ static int whereRangeVectorLen( ** the right column of the right source table. And that the sort ** order of the index column is the same as the sort order of the ** leftmost index column. */ - if( pLhs->op!=TK_COLUMN - || pLhs->iTable!=iCur - || pLhs->iColumn!=pIdx->aiColumn[i+nEq] + if( pLhs->op!=TK_COLUMN + || pLhs->iTable!=iCur + || pLhs->iColumn!=pIdx->aiColumn[i+nEq] || pIdx->aSortOrder[i+nEq]!=pIdx->aSortOrder[nEq] ){ break; @@ -138486,7 +162108,7 @@ static int whereRangeVectorLen( } /* -** Adjust the cost C by the costMult facter T. This only occurs if +** Adjust the cost C by the costMult factor T. This only occurs if ** compiled with -DSQLITE_ENABLE_COSTMULT */ #ifdef SQLITE_ENABLE_COSTMULT @@ -138496,24 +162118,24 @@ static int whereRangeVectorLen( #endif /* -** We have so far matched pBuilder->pNew->u.btree.nEq terms of the +** We have so far matched pBuilder->pNew->u.btree.nEq terms of the ** index pIndex. Try to match one more. ** -** When this function is called, pBuilder->pNew->nOut contains the -** number of rows expected to be visited by filtering using the nEq -** terms only. If it is modified, this value is restored before this +** When this function is called, pBuilder->pNew->nOut contains the +** number of rows expected to be visited by filtering using the nEq +** terms only. If it is modified, this value is restored before this ** function returns. ** -** If pProbe->tnum==0, that means pIndex is a fake index used for the -** INTEGER PRIMARY KEY. +** If pProbe->idxType==SQLITE_IDXTYPE_IPK, that means pIndex is +** a fake index used for the INTEGER PRIMARY KEY. */ static int whereLoopAddBtreeIndex( WhereLoopBuilder *pBuilder, /* The WhereLoop factory */ - struct SrcList_item *pSrc, /* FROM clause term being analyzed */ + SrcItem *pSrc, /* FROM clause term being analyzed */ Index *pProbe, /* An index on pSrc */ LogEst nInMul /* log(Number of iterations due to IN) */ ){ - WhereInfo *pWInfo = pBuilder->pWInfo; /* WHERE analyse context */ + WhereInfo *pWInfo = pBuilder->pWInfo; /* WHERE analyze context */ Parse *pParse = pWInfo->pParse; /* Parsing context */ sqlite3 *db = pParse->db; /* Database connection malloc context */ WhereLoop *pNew; /* Template WhereLoop under construction */ @@ -138534,9 +162156,13 @@ static int whereLoopAddBtreeIndex( WhereTerm *pTop = 0, *pBtm = 0; /* Top and bottom range constraints */ pNew = pBuilder->pNew; - if( db->mallocFailed ) return SQLITE_NOMEM_BKPT; - WHERETRACE(0x800, ("BEGIN %s.addBtreeIdx(%s), nEq=%d\n", - pProbe->pTable->zName,pProbe->zName, pNew->u.btree.nEq)); + assert( db->mallocFailed==0 || pParse->nErr>0 ); + if( pParse->nErr ){ + return pParse->rc; + } + WHERETRACE(0x800, ("BEGIN %s.addBtreeIdx(%s), nEq=%d, nSkip=%d, rRun=%d\n", + pProbe->pTable->zName,pProbe->zName, + pNew->u.btree.nEq, pNew->nSkip, pNew->rRun)); assert( (pNew->wsFlags & WHERE_VIRTUALTABLE)==0 ); assert( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 ); @@ -138549,6 +162175,8 @@ static int whereLoopAddBtreeIndex( if( pProbe->bUnordered ) opMask &= ~(WO_GT|WO_GE|WO_LT|WO_LE); assert( pNew->u.btree.nEqnColumn ); + assert( pNew->u.btree.nEqnKeyCol + || pProbe->idxType!=SQLITE_IDXTYPE_PRIMARYKEY ); saved_nEq = pNew->u.btree.nEq; saved_nBtm = pNew->u.btree.nBtm; @@ -138568,7 +162196,7 @@ static int whereLoopAddBtreeIndex( LogEst rCostIdx; LogEst nOutUnadjusted; /* nOut before IN() and WHERE adjustments */ int nIn = 0; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 int nRecValid = pBuilder->nRecValid; #endif if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0) @@ -138582,39 +162210,38 @@ static int whereLoopAddBtreeIndex( ** to mix with a lower range bound from some other source */ if( pTerm->wtFlags & TERM_LIKEOPT && pTerm->eOperator==WO_LT ) continue; - /* Do not allow constraints from the WHERE clause to be used by the - ** right table of a LEFT JOIN. Only constraints in the ON clause are - ** allowed */ - if( (pSrc->fg.jointype & JT_LEFT)!=0 - && !ExprHasProperty(pTerm->pExpr, EP_FromJoin) + if( (pSrc->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))!=0 + && !constraintCompatibleWithOuterJoin(pTerm,pSrc) ){ continue; } - if( IsUniqueIndex(pProbe) && saved_nEq==pProbe->nKeyCol-1 ){ - pBuilder->bldFlags |= SQLITE_BLDF_UNIQUE; + pBuilder->bldFlags1 |= SQLITE_BLDF1_UNIQUE; }else{ - pBuilder->bldFlags |= SQLITE_BLDF_INDEXED; + pBuilder->bldFlags1 |= SQLITE_BLDF1_INDEXED; } pNew->wsFlags = saved_wsFlags; pNew->u.btree.nEq = saved_nEq; pNew->u.btree.nBtm = saved_nBtm; pNew->u.btree.nTop = saved_nTop; pNew->nLTerm = saved_nLTerm; - if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */ + if( pNew->nLTerm>=pNew->nLSlot + && whereLoopResize(db, pNew, pNew->nLTerm+1) + ){ + break; /* OOM while trying to enlarge the pNew->aLTerm array */ + } pNew->aLTerm[pNew->nLTerm++] = pTerm; pNew->prereq = (saved_prereq | pTerm->prereqRight) & ~pNew->maskSelf; assert( nInMul==0 - || (pNew->wsFlags & WHERE_COLUMN_NULL)!=0 - || (pNew->wsFlags & WHERE_COLUMN_IN)!=0 - || (pNew->wsFlags & WHERE_SKIPSCAN)!=0 + || (pNew->wsFlags & WHERE_COLUMN_NULL)!=0 + || (pNew->wsFlags & WHERE_COLUMN_IN)!=0 + || (pNew->wsFlags & WHERE_SKIPSCAN)!=0 ); if( eOp & WO_IN ){ Expr *pExpr = pTerm->pExpr; - pNew->wsFlags |= WHERE_COLUMN_IN; - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( ExprUseXSelect(pExpr) ){ /* "x IN (SELECT ...)": TUNING: the SELECT returns 25 rows */ int i; nIn = 46; assert( 46==sqlite3LogEst(25) ); @@ -138630,68 +162257,114 @@ static int whereLoopAddBtreeIndex( }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){ /* "x IN (value, value, ...)" */ nIn = sqlite3LogEst(pExpr->x.pList->nExpr); - assert( nIn>0 ); /* RHS always has 2 or more terms... The parser - ** changes "x IN (?)" into "x=?". */ } + if( pProbe->hasStat1 && rLogSize>=10 ){ + LogEst M, logK, x; + /* Let: + ** N = the total number of rows in the table + ** K = the number of entries on the RHS of the IN operator + ** M = the number of rows in the table that match terms to the + ** to the left in the same index. If the IN operator is on + ** the left-most index column, M==N. + ** + ** Given the definitions above, it is better to omit the IN operator + ** from the index lookup and instead do a scan of the M elements, + ** testing each scanned row against the IN operator separately, if: + ** + ** M*log(K) < K*log(N) + ** + ** Our estimates for M, K, and N might be inaccurate, so we build in + ** a safety margin of 2 (LogEst: 10) that favors using the IN operator + ** with the index, as using an index has better worst-case behavior. + ** If we do not have real sqlite_stat1 data, always prefer to use + ** the index. Do not bother with this optimization on very small + ** tables (less than 2 rows) as it is pointless in that case. + */ + M = pProbe->aiRowLogEst[saved_nEq]; + logK = estLog(nIn); + /* TUNING v----- 10 to bias toward indexed IN */ + x = M + logK + 10 - (nIn + rLogSize); + if( x>=0 ){ + WHERETRACE(0x40, + ("IN operator (N=%d M=%d logK=%d nIn=%d rLogSize=%d x=%d) " + "prefers indexed lookup\n", + saved_nEq, M, logK, nIn, rLogSize, x)); + }else if( nInMul<2 && OptimizationEnabled(db, SQLITE_SeekScan) ){ + WHERETRACE(0x40, + ("IN operator (N=%d M=%d logK=%d nIn=%d rLogSize=%d x=%d" + " nInMul=%d) prefers skip-scan\n", + saved_nEq, M, logK, nIn, rLogSize, x, nInMul)); + pNew->wsFlags |= WHERE_IN_SEEKSCAN; + }else{ + WHERETRACE(0x40, + ("IN operator (N=%d M=%d logK=%d nIn=%d rLogSize=%d x=%d" + " nInMul=%d) prefers normal scan\n", + saved_nEq, M, logK, nIn, rLogSize, x, nInMul)); + continue; + } + } + pNew->wsFlags |= WHERE_COLUMN_IN; }else if( eOp & (WO_EQ|WO_IS) ){ int iCol = pProbe->aiColumn[saved_nEq]; pNew->wsFlags |= WHERE_COLUMN_EQ; assert( saved_nEq==pNew->u.btree.nEq ); - if( iCol==XN_ROWID + if( iCol==XN_ROWID || (iCol>=0 && nInMul==0 && saved_nEq==pProbe->nKeyCol-1) ){ - if( iCol==XN_ROWID || pProbe->uniqNotNull - || (pProbe->nKeyCol==1 && pProbe->onError && eOp==WO_EQ) + if( iCol==XN_ROWID || pProbe->uniqNotNull + || (pProbe->nKeyCol==1 && pProbe->onError && eOp==WO_EQ) ){ pNew->wsFlags |= WHERE_ONEROW; }else{ pNew->wsFlags |= WHERE_UNQ_WANTED; } } + if( scan.iEquiv>1 ) pNew->wsFlags |= WHERE_TRANSCONS; }else if( eOp & WO_ISNULL ){ pNew->wsFlags |= WHERE_COLUMN_NULL; - }else if( eOp & (WO_GT|WO_GE) ){ - testcase( eOp & WO_GT ); - testcase( eOp & WO_GE ); - pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT; - pNew->u.btree.nBtm = whereRangeVectorLen( - pParse, pSrc->iCursor, pProbe, saved_nEq, pTerm - ); - pBtm = pTerm; - pTop = 0; - if( pTerm->wtFlags & TERM_LIKEOPT ){ - /* Range contraints that come from the LIKE optimization are - ** always used in pairs. */ - pTop = &pTerm[1]; - assert( (pTop-(pTerm->pWC->a))pWC->nTerm ); - assert( pTop->wtFlags & TERM_LIKEOPT ); - assert( pTop->eOperator==WO_LT ); - if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */ - pNew->aLTerm[pNew->nLTerm++] = pTop; - pNew->wsFlags |= WHERE_TOP_LIMIT; - pNew->u.btree.nTop = 1; - } }else{ - assert( eOp & (WO_LT|WO_LE) ); - testcase( eOp & WO_LT ); - testcase( eOp & WO_LE ); - pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_TOP_LIMIT; - pNew->u.btree.nTop = whereRangeVectorLen( + int nVecLen = whereRangeVectorLen( pParse, pSrc->iCursor, pProbe, saved_nEq, pTerm ); - pTop = pTerm; - pBtm = (pNew->wsFlags & WHERE_BTM_LIMIT)!=0 ? - pNew->aLTerm[pNew->nLTerm-2] : 0; + if( eOp & (WO_GT|WO_GE) ){ + testcase( eOp & WO_GT ); + testcase( eOp & WO_GE ); + pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT; + pNew->u.btree.nBtm = nVecLen; + pBtm = pTerm; + pTop = 0; + if( pTerm->wtFlags & TERM_LIKEOPT ){ + /* Range constraints that come from the LIKE optimization are + ** always used in pairs. */ + pTop = &pTerm[1]; + assert( (pTop-(pTerm->pWC->a))pWC->nTerm ); + assert( pTop->wtFlags & TERM_LIKEOPT ); + assert( pTop->eOperator==WO_LT ); + if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */ + pNew->aLTerm[pNew->nLTerm++] = pTop; + pNew->wsFlags |= WHERE_TOP_LIMIT; + pNew->u.btree.nTop = 1; + } + }else{ + assert( eOp & (WO_LT|WO_LE) ); + testcase( eOp & WO_LT ); + testcase( eOp & WO_LE ); + pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_TOP_LIMIT; + pNew->u.btree.nTop = nVecLen; + pTop = pTerm; + pBtm = (pNew->wsFlags & WHERE_BTM_LIMIT)!=0 ? + pNew->aLTerm[pNew->nLTerm-2] : 0; + } } /* At this point pNew->nOut is set to the number of rows expected to ** be visited by the index scan before considering term pTerm, or the - ** values of nIn and nInMul. In other words, assuming that all + ** values of nIn and nInMul. In other words, assuming that all ** "x IN(...)" terms are replaced with "x = ?". This block updates ** the value of pNew->nOut to account for pTerm (but not nIn/nInMul). */ assert( pNew->nOut==saved_nOut ); if( pNew->wsFlags & WHERE_COLUMN_RANGE ){ - /* Adjust nOut using stat3/stat4 data. Or, if there is no stat3/stat4 + /* Adjust nOut using stat4 data. Or, if there is no stat4 ** data, using some other estimate. */ whereRangeScanEst(pParse, pBuilder, pBtm, pTop, pNew); }else{ @@ -138705,12 +162378,13 @@ static int whereLoopAddBtreeIndex( pNew->nOut += pTerm->truthProb; pNew->nOut -= nIn; }else{ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 tRowcnt nOut = 0; - if( nInMul==0 - && pProbe->nSample - && pNew->u.btree.nEq<=pProbe->nSampleCol - && ((eOp & WO_IN)==0 || !ExprHasProperty(pTerm->pExpr, EP_xIsSelect)) + if( nInMul==0 + && pProbe->nSample + && ALWAYS(pNew->u.btree.nEq<=pProbe->nSampleCol) + && ((eOp & WO_IN)==0 || ExprUseXList(pTerm->pExpr)) + && OptimizationEnabled(db, SQLITE_Stat4) ){ Expr *pExpr = pTerm->pExpr; if( (eOp & (WO_EQ|WO_ISNULL|WO_IS))!=0 ){ @@ -138725,6 +162399,27 @@ static int whereLoopAddBtreeIndex( if( rc!=SQLITE_OK ) break; /* Jump out of the pTerm loop */ if( nOut ){ pNew->nOut = sqlite3LogEst(nOut); + if( nEq==1 + /* TUNING: Mark terms as "low selectivity" if they seem likely + ** to be true for half or more of the rows in the table. + ** See tag-202002240-1 */ + && pNew->nOut+10 > pProbe->aiRowLogEst[0] + ){ +#if WHERETRACE_ENABLED /* 0x01 */ + if( sqlite3WhereTrace & 0x20 ){ + sqlite3DebugPrintf( + "STAT4 determines term has low selectivity:\n"); + sqlite3WhereTermPrint(pTerm, 999); + } +#endif + pTerm->wtFlags |= TERM_HIGHTRUTH; + if( pTerm->wtFlags & TERM_HEURTRUTH ){ + /* If the term has previously been used with an assumption of + ** higher selectivity, then set the flag to rerun the + ** loop computations. */ + pBuilder->bldFlags2 |= SQLITE_BLDF2_2NDPASS; + } + } if( pNew->nOut>saved_nOut ) pNew->nOut = saved_nOut; pNew->nOut -= nIn; } @@ -138734,8 +162429,8 @@ static int whereLoopAddBtreeIndex( { pNew->nOut += (pProbe->aiRowLogEst[nEq] - pProbe->aiRowLogEst[nEq-1]); if( eOp & WO_ISNULL ){ - /* TUNING: If there is no likelihood() value, assume that a - ** "col IS NULL" expression matches twice as many rows + /* TUNING: If there is no likelihood() value, assume that a + ** "col IS NULL" expression matches twice as many rows ** as (col=?). */ pNew->nOut += 10; } @@ -138747,9 +162442,18 @@ static int whereLoopAddBtreeIndex( ** it to pNew->rRun, which is currently set to the cost of the index ** seek only. Then, if this is a non-covering index, add the cost of ** visiting the rows in the main table. */ - rCostIdx = pNew->nOut + 1 + (15*pProbe->szIdxRow)/pSrc->pTab->szTabRow; + assert( pSrc->pTab->szTabRow>0 ); + if( pProbe->idxType==SQLITE_IDXTYPE_IPK ){ + /* The pProbe->szIdxRow is low for an IPK table since the interior + ** pages are small. Thus szIdxRow gives a good estimate of seek cost. + ** But the leaf pages are full-size, so pProbe->szIdxRow would badly + ** under-estimate the scanning cost. */ + rCostIdx = pNew->nOut + 16; + }else{ + rCostIdx = pNew->nOut + 1 + (15*pProbe->szIdxRow)/pSrc->pTab->szTabRow; + } pNew->rRun = sqlite3LogEstAdd(rLogSize, rCostIdx); - if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK))==0 ){ + if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK|WHERE_EXPRIDX))==0 ){ pNew->rRun = sqlite3LogEstAdd(pNew->rRun, pNew->nOut + 16); } ApplyCostMultiplier(pNew->rRun, pProbe->pTable->costMult); @@ -138768,11 +162472,16 @@ static int whereLoopAddBtreeIndex( if( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 && pNew->u.btree.nEqnColumn + && (pNew->u.btree.nEqnKeyCol || + pProbe->idxType!=SQLITE_IDXTYPE_PRIMARYKEY) ){ + if( pNew->u.btree.nEq>3 ){ + sqlite3ProgressCheck(pParse); + } whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nInMul+nIn); } pNew->nOut = saved_nOut; -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 pBuilder->nRecValid = nRecValid; #endif } @@ -138787,18 +162496,21 @@ static int whereLoopAddBtreeIndex( /* Consider using a skip-scan if there are no WHERE clause constraints ** available for the left-most terms of the index, and if the average - ** number of repeats in the left-most terms is at least 18. + ** number of repeats in the left-most terms is at least 18. ** ** The magic number 18 is selected on the basis that scanning 17 rows ** is almost always quicker than an index seek (even though if the index ** contains fewer than 2^17 rows we assume otherwise in other parts of - ** the code). And, even if it is not, it should not be too much slower. + ** the code). And, even if it is not, it should not be too much slower. ** On the other hand, the extra seeks could end up being significantly ** more expensive. */ assert( 42==sqlite3LogEst(18) ); if( saved_nEq==saved_nSkip && saved_nEq+1nKeyCol + && saved_nEq==pNew->nLTerm && pProbe->noSkipScan==0 + && pProbe->hasStat1!=0 + && OptimizationEnabled(db, SQLITE_SkipScan) && pProbe->aiRowLogEst[saved_nEq+1]>=42 /* TUNING: Minimum for skip-scan */ && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK ){ @@ -138844,7 +162556,8 @@ static int indexMightHelpWithOrderBy( if( pIndex->bUnordered ) return 0; if( (pOB = pBuilder->pWInfo->pOrderBy)==0 ) return 0; for(ii=0; iinExpr; ii++){ - Expr *pExpr = sqlite3ExprSkipCollate(pOB->a[ii].pExpr); + Expr *pExpr = sqlite3ExprSkipCollateAndLikely(pOB->a[ii].pExpr); + if( NEVER(pExpr==0) ) continue; if( pExpr->op==TK_COLUMN && pExpr->iTable==iCursor ){ if( pExpr->iColumn<0 ) return 1; for(jj=0; jjnKeyCol; jj++){ @@ -138862,40 +162575,33 @@ static int indexMightHelpWithOrderBy( return 0; } -/* -** Return a bitmask where 1s indicate that the corresponding column of -** the table is used by an index. Only the first 63 columns are considered. -*/ -static Bitmask columnsInIndex(Index *pIdx){ - Bitmask m = 0; - int j; - for(j=pIdx->nColumn-1; j>=0; j--){ - int x = pIdx->aiColumn[j]; - if( x>=0 ){ - testcase( x==BMS-1 ); - testcase( x==BMS-2 ); - if( xpWInfo->pParse; + Parse *pParse; + + if( jointype & JT_LTORJ ) return 0; + pParse = pWC->pWInfo->pParse; while( pWhere->op==TK_AND ){ - if( !whereUsablePartialIndex(iTab,pWC,pWhere->pLeft) ) return 0; + if( !whereUsablePartialIndex(iTab,jointype,pWC,pWhere->pLeft) ) return 0; pWhere = pWhere->pRight; } if( pParse->db->flags & SQLITE_EnableQPSG ) pParse = 0; for(i=0, pTerm=pWC->a; inTerm; i++, pTerm++){ - Expr *pExpr = pTerm->pExpr; - if( (!ExprHasProperty(pExpr, EP_FromJoin) || pExpr->iRightJoinTable==iTab) - && sqlite3ExprImpliesExpr(pParse, pExpr, pWhere, iTab) + Expr *pExpr; + pExpr = pTerm->pExpr; + if( (!ExprHasProperty(pExpr, EP_OuterON) || pExpr->w.iJoin==iTab) + && ((jointype & JT_OUTER)==0 || ExprHasProperty(pExpr, EP_OuterON)) + && sqlite3ExprImpliesExpr(pParse, pExpr, pWhere, iTab) + && (pTerm->wtFlags & TERM_VNULL)==0 ){ return 1; } @@ -138903,6 +162609,149 @@ static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){ return 0; } +/* +** pIdx is an index containing expressions. Check it see if any of the +** expressions in the index match the pExpr expression. +*/ +static int exprIsCoveredByIndex( + const Expr *pExpr, + const Index *pIdx, + int iTabCur +){ + int i; + for(i=0; inColumn; i++){ + if( pIdx->aiColumn[i]==XN_EXPR + && sqlite3ExprCompare(0, pExpr, pIdx->aColExpr->a[i].pExpr, iTabCur)==0 + ){ + return 1; + } + } + return 0; +} + +/* +** Structure passed to the whereIsCoveringIndex Walker callback. +*/ +typedef struct CoveringIndexCheck CoveringIndexCheck; +struct CoveringIndexCheck { + Index *pIdx; /* The index */ + int iTabCur; /* Cursor number for the corresponding table */ + u8 bExpr; /* Uses an indexed expression */ + u8 bUnidx; /* Uses an unindexed column not within an indexed expr */ +}; + +/* +** Information passed in is pWalk->u.pCovIdxCk. Call it pCk. +** +** If the Expr node references the table with cursor pCk->iTabCur, then +** make sure that column is covered by the index pCk->pIdx. We know that +** all columns less than 63 (really BMS-1) are covered, so we don't need +** to check them. But we do need to check any column at 63 or greater. +** +** If the index does not cover the column, then set pWalk->eCode to +** non-zero and return WRC_Abort to stop the search. +** +** If this node does not disprove that the index can be a covering index, +** then just return WRC_Continue, to continue the search. +** +** If pCk->pIdx contains indexed expressions and one of those expressions +** matches pExpr, then prune the search. +*/ +static int whereIsCoveringIndexWalkCallback(Walker *pWalk, Expr *pExpr){ + int i; /* Loop counter */ + const Index *pIdx; /* The index of interest */ + const i16 *aiColumn; /* Columns contained in the index */ + u16 nColumn; /* Number of columns in the index */ + CoveringIndexCheck *pCk; /* Info about this search */ + + pCk = pWalk->u.pCovIdxCk; + pIdx = pCk->pIdx; + if( (pExpr->op==TK_COLUMN || pExpr->op==TK_AGG_COLUMN) ){ + /* if( pExpr->iColumn<(BMS-1) && pIdx->bHasExpr==0 ) return WRC_Continue;*/ + if( pExpr->iTable!=pCk->iTabCur ) return WRC_Continue; + pIdx = pWalk->u.pCovIdxCk->pIdx; + aiColumn = pIdx->aiColumn; + nColumn = pIdx->nColumn; + for(i=0; iiColumn ) return WRC_Continue; + } + pCk->bUnidx = 1; + return WRC_Abort; + }else if( pIdx->bHasExpr + && exprIsCoveredByIndex(pExpr, pIdx, pWalk->u.pCovIdxCk->iTabCur) ){ + pCk->bExpr = 1; + return WRC_Prune; + } + return WRC_Continue; +} + + +/* +** pIdx is an index that covers all of the low-number columns used by +** pWInfo->pSelect (columns from 0 through 62) or an index that has +** expressions terms. Hence, we cannot determine whether or not it is +** a covering index by using the colUsed bitmasks. We have to do a search +** to see if the index is covering. This routine does that search. +** +** The return value is one of these: +** +** 0 The index is definitely not a covering index +** +** WHERE_IDX_ONLY The index is definitely a covering index +** +** WHERE_EXPRIDX The index is likely a covering index, but it is +** difficult to determine precisely because of the +** expressions that are indexed. Score it as a +** covering index, but still keep the main table open +** just in case we need it. +** +** This routine is an optimization. It is always safe to return zero. +** But returning one of the other two values when zero should have been +** returned can lead to incorrect bytecode and assertion faults. +*/ +static SQLITE_NOINLINE u32 whereIsCoveringIndex( + WhereInfo *pWInfo, /* The WHERE clause context */ + Index *pIdx, /* Index that is being tested */ + int iTabCur /* Cursor for the table being indexed */ +){ + int i, rc; + struct CoveringIndexCheck ck; + Walker w; + if( pWInfo->pSelect==0 ){ + /* We don't have access to the full query, so we cannot check to see + ** if pIdx is covering. Assume it is not. */ + return 0; + } + if( pIdx->bHasExpr==0 ){ + for(i=0; inColumn; i++){ + if( pIdx->aiColumn[i]>=BMS-1 ) break; + } + if( i>=pIdx->nColumn ){ + /* pIdx does not index any columns greater than 62, but we know from + ** colMask that columns greater than 62 are used, so this is not a + ** covering index */ + return 0; + } + } + ck.pIdx = pIdx; + ck.iTabCur = iTabCur; + ck.bExpr = 0; + ck.bUnidx = 0; + memset(&w, 0, sizeof(w)); + w.xExprCallback = whereIsCoveringIndexWalkCallback; + w.xSelectCallback = sqlite3SelectWalkNoop; + w.u.pCovIdxCk = &ck; + sqlite3WalkSelect(&w, pWInfo->pSelect); + if( ck.bUnidx ){ + rc = 0; + }else if( ck.bExpr ){ + rc = WHERE_EXPRIDX; + }else{ + rc = WHERE_IDX_ONLY; + } + return rc; +} + /* ** Add all WhereLoop objects for a single table of the join where the table ** is identified by pBuilder->pNew->iTab. That table is guaranteed to be @@ -138917,18 +162766,18 @@ static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){ ** cost = nRow * K // scan of covering index ** cost = nRow * (K+3.0) // scan of non-covering index ** -** where K is a value between 1.1 and 3.0 set based on the relative +** where K is a value between 1.1 and 3.0 set based on the relative ** estimated average size of the index and table records. ** ** For an index scan, where nVisit is the number of index rows visited -** by the scan, and nSeek is the number of seek operations required on +** by the scan, and nSeek is the number of seek operations required on ** the index b-tree: ** ** cost = nSeek * (log(nRow) + K * nVisit) // covering index ** cost = nSeek * (log(nRow) + (K+3.0) * nVisit) // non-covering index ** -** Normally, nSeek is 1. nSeek values greater than 1 come about if the -** WHERE clause includes "x IN (....)" terms used in place of "x=?". Or when +** Normally, nSeek is 1. nSeek values greater than 1 come about if the +** WHERE clause includes "x IN (....)" terms used in place of "x=?". Or when ** implicit "x IN (SELECT x FROM tbl)" terms are added for skip-scans. ** ** The estimated values (nRow, nVisit, nSeek) often contain a large amount @@ -138941,7 +162790,7 @@ static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){ */ static int whereLoopAddBtree( WhereLoopBuilder *pBuilder, /* WHERE clause information */ - Bitmask mPrereq /* Extra prerequesites for using this table */ + Bitmask mPrereq /* Extra prerequisites for using this table */ ){ WhereInfo *pWInfo; /* WHERE analysis context */ Index *pProbe; /* An index we are evaluating */ @@ -138949,16 +162798,15 @@ static int whereLoopAddBtree( LogEst aiRowEstPk[2]; /* The aiRowLogEst[] value for the sPk index */ i16 aiColumnPk = -1; /* The aColumn[] value for the sPk index */ SrcList *pTabList; /* The FROM clause */ - struct SrcList_item *pSrc; /* The FROM clause btree term to add */ + SrcItem *pSrc; /* The FROM clause btree term to add */ WhereLoop *pNew; /* Template WhereLoop object */ int rc = SQLITE_OK; /* Return code */ int iSortIdx = 1; /* Index number */ int b; /* A boolean value */ LogEst rSize; /* number of rows in the table */ - LogEst rLogSize; /* Logarithm of the number of rows in the table */ WhereClause *pWC; /* The parsed WHERE clause */ Table *pTab; /* Table being queried */ - + pNew = pBuilder->pNew; pWInfo = pBuilder->pWInfo; pTabList = pWInfo->pTabList; @@ -138967,9 +162815,10 @@ static int whereLoopAddBtree( pWC = pBuilder->pWC; assert( !IsVirtual(pSrc->pTab) ); - if( pSrc->pIBIndex ){ + if( pSrc->fg.isIndexedBy ){ + assert( pSrc->fg.isCte==0 ); /* An INDEXED BY clause specifies a particular index to use */ - pProbe = pSrc->pIBIndex; + pProbe = pSrc->u2.pIBIndex; }else if( !HasRowid(pTab) ){ pProbe = pTab->pIndex; }else{ @@ -138985,7 +162834,8 @@ static int whereLoopAddBtree( sPk.aiRowLogEst = aiRowEstPk; sPk.onError = OE_Replace; sPk.pTable = pTab; - sPk.szIdxRow = pTab->szTabRow; + sPk.szIdxRow = 3; /* TUNING: Interior rows of IPK table are very small */ + sPk.idxType = SQLITE_IDXTYPE_IPK; aiRowEstPk[0] = pTab->nRowLogEst; aiRowEstPk[1] = 0; pFirst = pSrc->pTab->pIndex; @@ -138997,22 +162847,24 @@ static int whereLoopAddBtree( pProbe = &sPk; } rSize = pTab->nRowLogEst; - rLogSize = estLog(rSize); #ifndef SQLITE_OMIT_AUTOMATIC_INDEX /* Automatic indexes */ if( !pBuilder->pOrSet /* Not part of an OR optimization */ - && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0 + && (pWInfo->wctrlFlags & (WHERE_RIGHT_JOIN|WHERE_OR_SUBCLAUSE))==0 && (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0 - && pSrc->pIBIndex==0 /* Has no INDEXED BY clause */ + && !pSrc->fg.isIndexedBy /* Has no INDEXED BY clause */ && !pSrc->fg.notIndexed /* Has no NOT INDEXED clause */ && HasRowid(pTab) /* Not WITHOUT ROWID table. (FIXME: Why not?) */ && !pSrc->fg.isCorrelated /* Not a correlated subquery */ && !pSrc->fg.isRecursive /* Not a recursive common table expression. */ + && (pSrc->fg.jointype & JT_RIGHT)==0 /* Not the right tab of a RIGHT JOIN */ ){ /* Generate auto-index WhereLoops */ + LogEst rLogSize; /* Logarithm of the number of rows in the table */ WhereTerm *pTerm; WhereTerm *pWCEnd = pWC->a + pWC->nTerm; + rLogSize = estLog(rSize); for(pTerm=pWC->a; rc==SQLITE_OK && pTermprereqRight & pNew->maskSelf ) continue; if( termCanDriveIndex(pTerm, pSrc, 0) ){ @@ -139030,10 +162882,11 @@ static int whereLoopAddBtree( ** those objects, since there is no opportunity to add schema ** indexes on subqueries and views. */ pNew->rSetup = rLogSize + rSize; - if( pTab->pSelect==0 && (pTab->tabFlags & TF_Ephemeral)==0 ){ + if( !IsView(pTab) && (pTab->tabFlags & TF_Ephemeral)==0 ){ pNew->rSetup += 28; }else{ - pNew->rSetup -= 10; + pNew->rSetup -= 25; /* Greatly reduced setup cost for auto indexes + ** on ephemeral materializations of views */ } ApplyCostMultiplier(pNew->rSetup, pTab->costMult); if( pNew->rSetup<0 ) pNew->rSetup = 0; @@ -139051,13 +162904,15 @@ static int whereLoopAddBtree( } #endif /* SQLITE_OMIT_AUTOMATIC_INDEX */ - /* Loop over all indices. If there was an INDEXED BY clause, then only + /* Loop over all indices. If there was an INDEXED BY clause, then only ** consider index pProbe. */ - for(; rc==SQLITE_OK && pProbe; - pProbe=(pSrc->pIBIndex ? 0 : pProbe->pNext), iSortIdx++ + for(; rc==SQLITE_OK && pProbe; + pProbe=(pSrc->fg.isIndexedBy ? 0 : pProbe->pNext), iSortIdx++ ){ if( pProbe->pPartIdxWhere!=0 - && !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){ + && !whereUsablePartialIndex(pSrc->iCursor, pSrc->fg.jointype, pWC, + pProbe->pPartIdxWhere) + ){ testcase( pNew->iTab!=pSrc->iCursor ); /* See ticket [98d973b8f5] */ continue; /* Partial index inappropriate for this query */ } @@ -139074,16 +162929,35 @@ static int whereLoopAddBtree( pNew->nOut = rSize; pNew->u.btree.pIndex = pProbe; b = indexMightHelpWithOrderBy(pBuilder, pProbe, pSrc->iCursor); + /* The ONEPASS_DESIRED flags never occurs together with ORDER BY */ assert( (pWInfo->wctrlFlags & WHERE_ONEPASS_DESIRED)==0 || b==0 ); - if( pProbe->tnum<=0 ){ + if( pProbe->idxType==SQLITE_IDXTYPE_IPK ){ /* Integer primary key index */ pNew->wsFlags = WHERE_IPK; /* Full table scan */ pNew->iSortIdx = b ? iSortIdx : 0; - /* TUNING: Cost of full table scan is (N*3.0). */ + /* TUNING: Cost of full table scan is 3.0*N. The 3.0 factor is an + ** extra cost designed to discourage the use of full table scans, + ** since index lookups have better worst-case performance if our + ** stat guesses are wrong. Reduce the 3.0 penalty slightly + ** (to 2.75) if we have valid STAT4 information for the table. + ** At 2.75, a full table scan is preferred over using an index on + ** a column with just two distinct values where each value has about + ** an equal number of appearances. Without STAT4 data, we still want + ** to use an index in that case, since the constraint might be for + ** the scarcer of the two values, and in that case an index lookup is + ** better. + */ +#ifdef SQLITE_ENABLE_STAT4 + pNew->rRun = rSize + 16 - 2*((pTab->tabFlags & TF_HasStat4)!=0); +#else pNew->rRun = rSize + 16; +#endif + if( IsView(pTab) || (pTab->tabFlags & TF_Ephemeral)!=0 ){ + pNew->wsFlags |= WHERE_VIEWSCAN; + } ApplyCostMultiplier(pNew->rRun, pTab->costMult); whereLoopOutputAdjust(pWC, pNew, rSize); rc = whereLoopInsert(pBuilder, pNew); @@ -139092,17 +162966,45 @@ static int whereLoopAddBtree( }else{ Bitmask m; if( pProbe->isCovering ){ - pNew->wsFlags = WHERE_IDX_ONLY | WHERE_INDEXED; m = 0; + pNew->wsFlags = WHERE_IDX_ONLY | WHERE_INDEXED; }else{ - m = pSrc->colUsed & ~columnsInIndex(pProbe); - pNew->wsFlags = (m==0) ? (WHERE_IDX_ONLY|WHERE_INDEXED) : WHERE_INDEXED; + m = pSrc->colUsed & pProbe->colNotIdxed; + pNew->wsFlags = WHERE_INDEXED; + if( m==TOPBIT || (pProbe->bHasExpr && !pProbe->bHasVCol && m!=0) ){ + u32 isCov = whereIsCoveringIndex(pWInfo, pProbe, pSrc->iCursor); + if( isCov==0 ){ + WHERETRACE(0x200, + ("-> %s is not a covering index" + " according to whereIsCoveringIndex()\n", pProbe->zName)); + assert( m!=0 ); + }else{ + m = 0; + pNew->wsFlags |= isCov; + if( isCov & WHERE_IDX_ONLY ){ + WHERETRACE(0x200, + ("-> %s is a covering expression index" + " according to whereIsCoveringIndex()\n", pProbe->zName)); + }else{ + assert( isCov==WHERE_EXPRIDX ); + WHERETRACE(0x200, + ("-> %s might be a covering expression index" + " according to whereIsCoveringIndex()\n", pProbe->zName)); + } + } + }else if( m==0 ){ + WHERETRACE(0x200, + ("-> %s a covering index according to bitmasks\n", + pProbe->zName, m==0 ? "is" : "is not")); + pNew->wsFlags = WHERE_IDX_ONLY | WHERE_INDEXED; + } } /* Full scan via index */ if( b || !HasRowid(pTab) || pProbe->pPartIdxWhere!=0 + || pSrc->fg.isIndexedBy || ( m==0 && pProbe->bUnordered==0 && (pProbe->szIdxRowszTabRow) @@ -139141,27 +163043,34 @@ static int whereLoopAddBtree( if( pTerm->eOperator & (WO_EQ|WO_IS) ) nLookup -= 19; } } - + pNew->rRun = sqlite3LogEstAdd(pNew->rRun, nLookup); } ApplyCostMultiplier(pNew->rRun, pTab->costMult); whereLoopOutputAdjust(pWC, pNew, rSize); - rc = whereLoopInsert(pBuilder, pNew); + if( (pSrc->fg.jointype & JT_RIGHT)!=0 && pProbe->aColExpr ){ + /* Do not do an SCAN of a index-on-expression in a RIGHT JOIN + ** because the cursor used to access the index might not be + ** positioned to the correct row during the right-join no-match + ** loop. */ + }else{ + rc = whereLoopInsert(pBuilder, pNew); + } pNew->nOut = rSize; if( rc ) break; } } - pBuilder->bldFlags = 0; + pBuilder->bldFlags1 = 0; rc = whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, 0); - if( pBuilder->bldFlags==SQLITE_BLDF_INDEXED ){ + if( pBuilder->bldFlags1==SQLITE_BLDF1_INDEXED ){ /* If a non-unique index is used, or if a prefix of the key for ** unique index is used (making the index functionally non-unique) ** then the sqlite_stat1 data becomes important for scoring the ** plan */ pTab->tabFlags |= TF_StatsUsed; } -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +#ifdef SQLITE_ENABLE_STAT4 sqlite3Stat4ProbeFree(pBuilder->pRec); pBuilder->nRecValid = 0; pBuilder->pRec = 0; @@ -139172,6 +163081,15 @@ static int whereLoopAddBtree( #ifndef SQLITE_OMIT_VIRTUALTABLE +/* +** Return true if pTerm is a virtual table LIMIT or OFFSET term. +*/ +static int isLimitTerm(WhereTerm *pTerm){ + assert( pTerm->eOperator==WO_AUX || pTerm->eMatchOp==0 ); + return pTerm->eMatchOp>=SQLITE_INDEX_CONSTRAINT_LIMIT + && pTerm->eMatchOp<=SQLITE_INDEX_CONSTRAINT_OFFSET; +} + /* ** Argument pIdxInfo is already populated with all constraints that may ** be used by the virtual table identified by pBuilder->pNew->iTab. This @@ -139199,9 +163117,11 @@ static int whereLoopAddVirtualOne( u16 mExclude, /* Exclude terms using these operators */ sqlite3_index_info *pIdxInfo, /* Populated object for xBestIndex */ u16 mNoOmit, /* Do not omit these constraints */ - int *pbIn /* OUT: True if plan uses an IN(...) op */ + int *pbIn, /* OUT: True if plan uses an IN(...) op */ + int *pbRetryLimit /* OUT: Retry without LIMIT/OFFSET */ ){ WhereClause *pWC = pBuilder->pWC; + HiddenIndexInfo *pHidden = (HiddenIndexInfo*)&pIdxInfo[1]; struct sqlite3_index_constraint *pIdxCons; struct sqlite3_index_constraint_usage *pUsage = pIdxInfo->aConstraintUsage; int i; @@ -139209,21 +163129,22 @@ static int whereLoopAddVirtualOne( int rc = SQLITE_OK; WhereLoop *pNew = pBuilder->pNew; Parse *pParse = pBuilder->pWInfo->pParse; - struct SrcList_item *pSrc = &pBuilder->pWInfo->pTabList->a[pNew->iTab]; + SrcItem *pSrc = &pBuilder->pWInfo->pTabList->a[pNew->iTab]; int nConstraint = pIdxInfo->nConstraint; assert( (mUsable & mPrereq)==mPrereq ); *pbIn = 0; pNew->prereq = mPrereq; - /* Set the usable flag on the subset of constraints identified by + /* Set the usable flag on the subset of constraints identified by ** arguments mUsable and mExclude. */ pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; for(i=0; ia[pIdxCons->iTermOffset]; pIdxCons->usable = 0; - if( (pTerm->prereqRight & mUsable)==pTerm->prereqRight + if( (pTerm->prereqRight & mUsable)==pTerm->prereqRight && (pTerm->eOperator & mExclude)==0 + && (pbRetryLimit || !isLimitTerm(pTerm)) ){ pIdxCons->usable = 1; } @@ -139239,15 +163160,26 @@ static int whereLoopAddVirtualOne( pIdxInfo->estimatedRows = 25; pIdxInfo->idxFlags = 0; pIdxInfo->colUsed = (sqlite3_int64)pSrc->colUsed; + pHidden->mHandleIn = 0; /* Invoke the virtual table xBestIndex() method */ rc = vtabBestIndex(pParse, pSrc->pTab, pIdxInfo); - if( rc ) return rc; + if( rc ){ + if( rc==SQLITE_CONSTRAINT ){ + /* If the xBestIndex method returns SQLITE_CONSTRAINT, that means + ** that the particular combination of parameters provided is unusable. + ** Make no entries in the loop table. + */ + WHERETRACE(0xffffffff, (" ^^^^--- non-viable plan rejected!\n")); + return SQLITE_OK; + } + return rc; + } mxTerm = -1; assert( pNew->nLSlot>=nConstraint ); - for(i=0; iaLTerm[i] = 0; - pNew->u.vtab.omitMask = 0; + memset(pNew->aLTerm, 0, sizeof(pNew->aLTerm[0])*nConstraint ); + memset(&pNew->u.vtab, 0, sizeof(pNew->u.vtab)); pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; for(i=0; imxTerm ) mxTerm = iTerm; testcase( iTerm==15 ); testcase( iTerm==16 ); - if( iTerm<16 && pUsage[i].omit ) pNew->u.vtab.omitMask |= 1<eOperator & WO_IN)!=0 ){ + if( pUsage[i].omit ){ + if( i<16 && ((1<u.vtab.omitMask |= 1<eMatchOp==SQLITE_INDEX_CONSTRAINT_OFFSET ){ + pNew->u.vtab.bOmitOffset = 1; + } + } + if( SMASKBIT32(i) & pHidden->mHandleIn ){ + pNew->u.vtab.mHandleIn |= MASKBIT32(iTerm); + }else if( (pTerm->eOperator & WO_IN)!=0 ){ /* A virtual table that is constrained by an IN clause may not ** consume the ORDER BY clause because (1) the order of IN terms ** is not necessarily related to the order of output terms and @@ -139285,9 +163229,24 @@ static int whereLoopAddVirtualOne( pIdxInfo->idxFlags &= ~SQLITE_INDEX_SCAN_UNIQUE; *pbIn = 1; assert( (mExclude & WO_IN)==0 ); } + + assert( pbRetryLimit || !isLimitTerm(pTerm) ); + if( isLimitTerm(pTerm) && *pbIn ){ + /* If there is an IN(...) term handled as an == (separate call to + ** xFilter for each value on the RHS of the IN) and a LIMIT or + ** OFFSET term handled as well, the plan is unusable. Set output + ** variable *pbRetryLimit to true to tell the caller to retry with + ** LIMIT and OFFSET disabled. */ + if( pIdxInfo->needToFreeIdxStr ){ + sqlite3_free(pIdxInfo->idxStr); + pIdxInfo->idxStr = 0; + pIdxInfo->needToFreeIdxStr = 0; + } + *pbRetryLimit = 1; + return SQLITE_OK; + } } } - pNew->u.vtab.omitMask &= ~mNoOmit; pNew->nLTerm = mxTerm+1; for(i=0; i<=mxTerm; i++){ @@ -139322,7 +163281,7 @@ static int whereLoopAddVirtualOne( sqlite3_free(pNew->u.vtab.idxStr); pNew->u.vtab.needFree = 0; } - WHERETRACE(0xffff, (" bIn=%d prereqIn=%04llx prereqOut=%04llx\n", + WHERETRACE(0xffffffff, (" bIn=%d prereqIn=%04llx prereqOut=%04llx\n", *pbIn, (sqlite3_uint64)mPrereq, (sqlite3_uint64)(pNew->prereq & ~mPrereq))); @@ -139330,11 +163289,19 @@ static int whereLoopAddVirtualOne( } /* -** If this function is invoked from within an xBestIndex() callback, it -** returns a pointer to a buffer containing the name of the collation -** sequence associated with element iCons of the sqlite3_index_info.aConstraint -** array. Or, if iCons is out of range or there is no active xBestIndex -** call, return NULL. +** Return the collating sequence for a constraint passed into xBestIndex. +** +** pIdxInfo must be an sqlite3_index_info structure passed into xBestIndex. +** This routine depends on there being a HiddenIndexInfo structure immediately +** following the sqlite3_index_info structure. +** +** Return a pointer to the collation name: +** +** 1. If there is an explicit COLLATE operator on the constraint, return it. +** +** 2. Else, if the column has an alternative collation, return that. +** +** 3. Otherwise, return "BINARY". */ SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int iCons){ HiddenIndexInfo *pHidden = (HiddenIndexInfo*)&pIdxInfo[1]; @@ -139344,13 +163311,99 @@ SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int int iTerm = pIdxInfo->aConstraint[iCons].iTermOffset; Expr *pX = pHidden->pWC->a[iTerm].pExpr; if( pX->pLeft ){ - pC = sqlite3BinaryCompareCollSeq(pHidden->pParse, pX->pLeft, pX->pRight); + pC = sqlite3ExprCompareCollSeq(pHidden->pParse, pX); } - zRet = (pC ? pC->zName : "BINARY"); + zRet = (pC ? pC->zName : sqlite3StrBINARY); } return zRet; } +/* +** Return true if constraint iCons is really an IN(...) constraint, or +** false otherwise. If iCons is an IN(...) constraint, set (if bHandle!=0) +** or clear (if bHandle==0) the flag to handle it using an iterator. +*/ +SQLITE_API int sqlite3_vtab_in(sqlite3_index_info *pIdxInfo, int iCons, int bHandle){ + HiddenIndexInfo *pHidden = (HiddenIndexInfo*)&pIdxInfo[1]; + u32 m = SMASKBIT32(iCons); + if( m & pHidden->mIn ){ + if( bHandle==0 ){ + pHidden->mHandleIn &= ~m; + }else if( bHandle>0 ){ + pHidden->mHandleIn |= m; + } + return 1; + } + return 0; +} + +/* +** This interface is callable from within the xBestIndex callback only. +** +** If possible, set (*ppVal) to point to an object containing the value +** on the right-hand-side of constraint iCons. +*/ +SQLITE_API int sqlite3_vtab_rhs_value( + sqlite3_index_info *pIdxInfo, /* Copy of first argument to xBestIndex */ + int iCons, /* Constraint for which RHS is wanted */ + sqlite3_value **ppVal /* Write value extracted here */ +){ + HiddenIndexInfo *pH = (HiddenIndexInfo*)&pIdxInfo[1]; + sqlite3_value *pVal = 0; + int rc = SQLITE_OK; + if( iCons<0 || iCons>=pIdxInfo->nConstraint ){ + rc = SQLITE_MISUSE; /* EV: R-30545-25046 */ + }else{ + if( pH->aRhs[iCons]==0 ){ + WhereTerm *pTerm = &pH->pWC->a[pIdxInfo->aConstraint[iCons].iTermOffset]; + rc = sqlite3ValueFromExpr( + pH->pParse->db, pTerm->pExpr->pRight, ENC(pH->pParse->db), + SQLITE_AFF_BLOB, &pH->aRhs[iCons] + ); + testcase( rc!=SQLITE_OK ); + } + pVal = pH->aRhs[iCons]; + } + *ppVal = pVal; + + if( rc==SQLITE_OK && pVal==0 ){ /* IMP: R-19933-32160 */ + rc = SQLITE_NOTFOUND; /* IMP: R-36424-56542 */ + } + + return rc; +} + +/* +** Return true if ORDER BY clause may be handled as DISTINCT. +*/ +SQLITE_API int sqlite3_vtab_distinct(sqlite3_index_info *pIdxInfo){ + HiddenIndexInfo *pHidden = (HiddenIndexInfo*)&pIdxInfo[1]; + assert( pHidden->eDistinct>=0 && pHidden->eDistinct<=3 ); + return pHidden->eDistinct; +} + +/* +** Cause the prepared statement that is associated with a call to +** xBestIndex to potentially use all schemas. If the statement being +** prepared is read-only, then just start read transactions on all +** schemas. But if this is a write operation, start writes on all +** schemas. +** +** This is used by the (built-in) sqlite_dbpage virtual table. +*/ +SQLITE_PRIVATE void sqlite3VtabUsesAllSchemas(Parse *pParse){ + int nDb = pParse->db->nDb; + int i; + for(i=0; iwriteMask) ){ + for(i=0; ipNew->iTab. That table is guaranteed to be a virtual table. @@ -139360,8 +163413,8 @@ SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int ** entries that occur before the virtual table in the FROM clause and are ** separated from it by at least one LEFT or CROSS JOIN. Similarly, the ** mUnusable mask contains all FROM clause entries that occur after the -** virtual table and are separated from it by at least one LEFT or -** CROSS JOIN. +** virtual table and are separated from it by at least one LEFT or +** CROSS JOIN. ** ** For example, if the query were: ** @@ -139369,9 +163422,9 @@ SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int ** ** then mPrereq corresponds to (t1, t2) and mUnusable to (t5, t6). ** -** All the tables in mPrereq must be scanned before the current virtual -** table. So any terms for which all prerequisites are satisfied by -** mPrereq may be specified as "usable" in all calls to xBestIndex. +** All the tables in mPrereq must be scanned before the current virtual +** table. So any terms for which all prerequisites are satisfied by +** mPrereq may be specified as "usable" in all calls to xBestIndex. ** Conversely, all tables in mUnusable must be scanned after the current ** virtual table, so any terms for which the prerequisites overlap with ** mUnusable should always be configured as "not-usable" for xBestIndex. @@ -139385,13 +163438,14 @@ static int whereLoopAddVirtual( WhereInfo *pWInfo; /* WHERE analysis context */ Parse *pParse; /* The parsing context */ WhereClause *pWC; /* The WHERE clause */ - struct SrcList_item *pSrc; /* The FROM clause term to search */ + SrcItem *pSrc; /* The FROM clause term to search */ sqlite3_index_info *p; /* Object to pass to xBestIndex() */ int nConstraint; /* Number of constraints in p */ int bIn; /* True if plan uses IN(...) operator */ WhereLoop *pNew; Bitmask mBest; /* Tables used by best possible plan */ u16 mNoOmit; + int bRetry = 0; /* True to retry with LIMIT/OFFSET disabled */ assert( (mPrereq & mUnusable)==0 ); pWInfo = pBuilder->pWInfo; @@ -139400,8 +163454,7 @@ static int whereLoopAddVirtual( pNew = pBuilder->pNew; pSrc = &pWInfo->pTabList->a[pNew->iTab]; assert( IsVirtual(pSrc->pTab) ); - p = allocateIndexInfo(pParse, pWC, mUnusable, pSrc, pBuilder->pOrderBy, - &mNoOmit); + p = allocateIndexInfo(pWInfo, pWC, mUnusable, pSrc, &mNoOmit); if( p==0 ) return SQLITE_NOMEM_BKPT; pNew->rSetup = 0; pNew->wsFlags = WHERE_VIRTUALTABLE; @@ -139409,21 +163462,29 @@ static int whereLoopAddVirtual( pNew->u.vtab.needFree = 0; nConstraint = p->nConstraint; if( whereLoopResize(pParse->db, pNew, nConstraint) ){ - sqlite3DbFree(pParse->db, p); + freeIndexInfo(pParse->db, p); return SQLITE_NOMEM_BKPT; } /* First call xBestIndex() with all constraints usable. */ WHERETRACE(0x800, ("BEGIN %s.addVirtual()\n", pSrc->pTab->zName)); - WHERETRACE(0x40, (" VirtualOne: all usable\n")); - rc = whereLoopAddVirtualOne(pBuilder, mPrereq, ALLBITS, 0, p, mNoOmit, &bIn); + WHERETRACE(0x800, (" VirtualOne: all usable\n")); + rc = whereLoopAddVirtualOne( + pBuilder, mPrereq, ALLBITS, 0, p, mNoOmit, &bIn, &bRetry + ); + if( bRetry ){ + assert( rc==SQLITE_OK ); + rc = whereLoopAddVirtualOne( + pBuilder, mPrereq, ALLBITS, 0, p, mNoOmit, &bIn, 0 + ); + } /* If the call to xBestIndex() with all terms enabled produced a plan - ** that does not require any source tables (IOW: a plan with mBest==0), - ** then there is no point in making any further calls to xBestIndex() - ** since they will all return the same result (if the xBestIndex() - ** implementation is sane). */ - if( rc==SQLITE_OK && (mBest = (pNew->prereq & ~mPrereq))!=0 ){ + ** that does not require any source tables (IOW: a plan with mBest==0) + ** and does not use an IN(...) operator, then there is no point in making + ** any further calls to xBestIndex() since they will all return the same + ** result (if the xBestIndex() implementation is sane). */ + if( rc==SQLITE_OK && ((mBest = (pNew->prereq & ~mPrereq))!=0 || bIn) ){ int seenZero = 0; /* True if a plan with no prereqs seen */ int seenZeroNoIN = 0; /* Plan with no prereqs and no IN(...) seen */ Bitmask mPrev = 0; @@ -139432,9 +163493,9 @@ static int whereLoopAddVirtual( /* If the plan produced by the earlier call uses an IN(...) term, call ** xBestIndex again, this time with IN(...) terms disabled. */ if( bIn ){ - WHERETRACE(0x40, (" VirtualOne: all usable w/o IN\n")); + WHERETRACE(0x800, (" VirtualOne: all usable w/o IN\n")); rc = whereLoopAddVirtualOne( - pBuilder, mPrereq, ALLBITS, WO_IN, p, mNoOmit, &bIn); + pBuilder, mPrereq, ALLBITS, WO_IN, p, mNoOmit, &bIn, 0); assert( bIn==0 ); mBestNoIn = pNew->prereq & ~mPrereq; if( mBestNoIn==0 ){ @@ -139443,7 +163504,7 @@ static int whereLoopAddVirtual( } } - /* Call xBestIndex once for each distinct value of (prereqRight & ~mPrereq) + /* Call xBestIndex once for each distinct value of (prereqRight & ~mPrereq) ** in the set of terms that apply to the current virtual table. */ while( rc==SQLITE_OK ){ int i; @@ -139458,10 +163519,10 @@ static int whereLoopAddVirtual( mPrev = mNext; if( mNext==ALLBITS ) break; if( mNext==mBest || mNext==mBestNoIn ) continue; - WHERETRACE(0x40, (" VirtualOne: mPrev=%04llx mNext=%04llx\n", + WHERETRACE(0x800, (" VirtualOne: mPrev=%04llx mNext=%04llx\n", (sqlite3_uint64)mPrev, (sqlite3_uint64)mNext)); rc = whereLoopAddVirtualOne( - pBuilder, mPrereq, mNext|mPrereq, 0, p, mNoOmit, &bIn); + pBuilder, mPrereq, mNext|mPrereq, 0, p, mNoOmit, &bIn, 0); if( pNew->prereq==mPrereq ){ seenZero = 1; if( bIn==0 ) seenZeroNoIN = 1; @@ -139472,9 +163533,9 @@ static int whereLoopAddVirtual( ** that requires no source tables at all (i.e. one guaranteed to be ** usable), make a call here with all source tables disabled */ if( rc==SQLITE_OK && seenZero==0 ){ - WHERETRACE(0x40, (" VirtualOne: all disabled\n")); + WHERETRACE(0x800, (" VirtualOne: all disabled\n")); rc = whereLoopAddVirtualOne( - pBuilder, mPrereq, mPrereq, 0, p, mNoOmit, &bIn); + pBuilder, mPrereq, mPrereq, 0, p, mNoOmit, &bIn, 0); if( bIn==0 ) seenZeroNoIN = 1; } @@ -139482,14 +163543,14 @@ static int whereLoopAddVirtual( ** that requires no source tables at all and does not use an IN(...) ** operator, make a final call to obtain one here. */ if( rc==SQLITE_OK && seenZeroNoIN==0 ){ - WHERETRACE(0x40, (" VirtualOne: all disabled and w/o IN\n")); + WHERETRACE(0x800, (" VirtualOne: all disabled and w/o IN\n")); rc = whereLoopAddVirtualOne( - pBuilder, mPrereq, mPrereq, WO_IN, p, mNoOmit, &bIn); + pBuilder, mPrereq, mPrereq, WO_IN, p, mNoOmit, &bIn, 0); } } if( p->needToFreeIdxStr ) sqlite3_free(p->idxStr); - sqlite3DbFreeNN(pParse->db, p); + freeIndexInfo(pParse->db, p); WHERETRACE(0x800, ("END %s.addVirtual(), rc=%d\n", pSrc->pTab->zName, rc)); return rc; } @@ -139500,8 +163561,8 @@ static int whereLoopAddVirtual( ** btrees or virtual tables. */ static int whereLoopAddOr( - WhereLoopBuilder *pBuilder, - Bitmask mPrereq, + WhereLoopBuilder *pBuilder, + Bitmask mPrereq, Bitmask mUnusable ){ WhereInfo *pWInfo = pBuilder->pWInfo; @@ -139513,8 +163574,8 @@ static int whereLoopAddOr( WhereClause tempWC; WhereLoopBuilder sSubBuild; WhereOrSet sSum, sCur; - struct SrcList_item *pItem; - + SrcItem *pItem; + pWC = pBuilder->pWC; pWCEnd = pWC->a + pWC->nTerm; pNew = pBuilder->pNew; @@ -139522,21 +163583,23 @@ static int whereLoopAddOr( pItem = pWInfo->pTabList->a + pNew->iTab; iCur = pItem->iCursor; + /* The multi-index OR optimization does not work for RIGHT and FULL JOIN */ + if( pItem->fg.jointype & JT_RIGHT ) return SQLITE_OK; + for(pTerm=pWC->a; pTermeOperator & WO_OR)!=0 - && (pTerm->u.pOrInfo->indexable & pNew->maskSelf)!=0 + && (pTerm->u.pOrInfo->indexable & pNew->maskSelf)!=0 ){ WhereClause * const pOrWC = &pTerm->u.pOrInfo->wc; WhereTerm * const pOrWCEnd = &pOrWC->a[pOrWC->nTerm]; WhereTerm *pOrTerm; int once = 1; int i, j; - + sSubBuild = *pBuilder; - sSubBuild.pOrderBy = 0; sSubBuild.pOrSet = &sCur; - WHERETRACE(0x200, ("Begin processing OR-clause %p\n", pTerm)); + WHERETRACE(0x400, ("Begin processing OR-clause %p\n", pTerm)); for(pOrTerm=pOrWC->a; pOrTermeOperator & WO_AND)!=0 ){ sSubBuild.pWC = &pOrTerm->u.pAndInfo->wc; @@ -139545,6 +163608,7 @@ static int whereLoopAddOr( tempWC.pOuter = pWC; tempWC.op = TK_AND; tempWC.nTerm = 1; + tempWC.nBase = 1; tempWC.a = pOrTerm; sSubBuild.pWC = &tempWC; }else{ @@ -139552,9 +163616,9 @@ static int whereLoopAddOr( } sCur.n = 0; #ifdef WHERETRACE_ENABLED - WHERETRACE(0x200, ("OR-term %d of %p has %d subterms:\n", + WHERETRACE(0x400, ("OR-term %d of %p has %d subterms:\n", (int)(pOrTerm-pOrWC->a), pTerm, sSubBuild.pWC->nTerm)); - if( sqlite3WhereTrace & 0x400 ){ + if( sqlite3WhereTrace & 0x20000 ){ sqlite3WhereClausePrint(sSubBuild.pWC); } #endif @@ -139569,7 +163633,8 @@ static int whereLoopAddOr( if( rc==SQLITE_OK ){ rc = whereLoopAddOr(&sSubBuild, mPrereq, mUnusable); } - assert( rc==SQLITE_OK || sCur.n==0 ); + testcase( rc==SQLITE_NOMEM && sCur.n>0 ); + testcase( rc==SQLITE_DONE ); if( sCur.n==0 ){ sSum.n = 0; break; @@ -139599,8 +163664,8 @@ static int whereLoopAddOr( /* TUNING: Currently sSum.a[i].rRun is set to the sum of the costs ** of all sub-scans required by the OR-scan. However, due to rounding ** errors, it may be that the cost of the OR-scan is equal to its - ** most expensive sub-scan. Add the smallest possible penalty - ** (equivalent to multiplying the cost by 1.07) to ensure that + ** most expensive sub-scan. Add the smallest possible penalty + ** (equivalent to multiplying the cost by 1.07) to ensure that ** this does not happen. Otherwise, for WHERE clauses such as the ** following where there is an index on "y": ** @@ -139613,14 +163678,14 @@ static int whereLoopAddOr( pNew->prereq = sSum.a[i].prereq; rc = whereLoopInsert(pBuilder, pNew); } - WHERETRACE(0x200, ("End processing OR-clause %p\n", pTerm)); + WHERETRACE(0x400, ("End processing OR-clause %p\n", pTerm)); } } return rc; } /* -** Add all WhereLoop objects for all tables +** Add all WhereLoop objects for all tables */ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ WhereInfo *pWInfo = pBuilder->pWInfo; @@ -139628,31 +163693,54 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ Bitmask mPrior = 0; int iTab; SrcList *pTabList = pWInfo->pTabList; - struct SrcList_item *pItem; - struct SrcList_item *pEnd = &pTabList->a[pWInfo->nLevel]; + SrcItem *pItem; + SrcItem *pEnd = &pTabList->a[pWInfo->nLevel]; sqlite3 *db = pWInfo->pParse->db; int rc = SQLITE_OK; + int bFirstPastRJ = 0; + int hasRightJoin = 0; WhereLoop *pNew; - u8 priorJointype = 0; + /* Loop over the tables in the join, from left to right */ pNew = pBuilder->pNew; - whereLoopInit(pNew); + + /* Verify that pNew has already been initialized */ + assert( pNew->nLTerm==0 ); + assert( pNew->wsFlags==0 ); + assert( pNew->nLSlot>=ArraySize(pNew->aLTermSpace) ); + assert( pNew->aLTerm!=0 ); + + pBuilder->iPlanLimit = SQLITE_QUERY_PLANNER_LIMIT; for(iTab=0, pItem=pTabList->a; pItemiTab = iTab; + pBuilder->iPlanLimit += SQLITE_QUERY_PLANNER_LIMIT_INCR; pNew->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, pItem->iCursor); - if( ((pItem->fg.jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){ - /* This condition is true when pItem is the FROM clause term on the - ** right-hand-side of a LEFT or CROSS JOIN. */ - mPrereq = mPrior; + if( bFirstPastRJ + || (pItem->fg.jointype & (JT_OUTER|JT_CROSS|JT_LTORJ))!=0 + ){ + /* Add prerequisites to prevent reordering of FROM clause terms + ** across CROSS joins and outer joins. The bFirstPastRJ boolean + ** prevents the right operand of a RIGHT JOIN from being swapped with + ** other elements even further to the right. + ** + ** The JT_LTORJ case and the hasRightJoin flag work together to + ** prevent FROM-clause terms from moving from the right side of + ** a LEFT JOIN over to the left side of that join if the LEFT JOIN + ** is itself on the left side of a RIGHT JOIN. + */ + if( pItem->fg.jointype & JT_LTORJ ) hasRightJoin = 1; + mPrereq |= mPrior; + bFirstPastRJ = (pItem->fg.jointype & JT_RIGHT)!=0; + }else if( !hasRightJoin ){ + mPrereq = 0; } - priorJointype = pItem->fg.jointype; #ifndef SQLITE_OMIT_VIRTUALTABLE if( IsVirtual(pItem->pTab) ){ - struct SrcList_item *p; + SrcItem *p; for(p=&pItem[1]; pfg.jointype & (JT_LEFT|JT_CROSS)) ){ + if( mUnusable || (p->fg.jointype & (JT_OUTER|JT_CROSS)) ){ mUnusable |= sqlite3WhereGetMask(&pWInfo->sMaskSet, p->iCursor); } } @@ -139662,11 +163750,19 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ { rc = whereLoopAddBtree(pBuilder, mPrereq); } - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK && pBuilder->pWC->hasOr ){ rc = whereLoopAddOr(pBuilder, mPrereq, mUnusable); } mPrior |= pNew->maskSelf; - if( rc || db->mallocFailed ) break; + if( rc || db->mallocFailed ){ + if( rc==SQLITE_DONE ){ + /* We hit the query planner search limit set by iPlanLimit */ + sqlite3_log(SQLITE_WARNING, "abbreviated query algorithm search"); + rc = SQLITE_OK; + }else{ + break; + } + } } whereLoopClear(db, pNew); @@ -139677,17 +163773,17 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ ** Examine a WherePath (with the addition of the extra WhereLoop of the 6th ** parameters) to see if it outputs rows in the requested ORDER BY ** (or GROUP BY) without requiring a separate sort operation. Return N: -** +** ** N>0: N terms of the ORDER BY clause are satisfied ** N==0: No terms of the ORDER BY clause are satisfied -** N<0: Unknown yet how many terms of ORDER BY might be satisfied. +** N<0: Unknown yet how many terms of ORDER BY might be satisfied. ** ** Note that processing for WHERE_GROUPBY and WHERE_DISTINCTBY is not as ** strict. With GROUP BY and DISTINCT the only requirement is that ** equivalent rows appear immediately adjacent to one another. GROUP BY ** and DISTINCT do not require rows to appear in any particular order as long ** as equivalent rows are grouped together. Thus for GROUP BY and DISTINCT -** the pOrderBy terms can be matched in any order. With ORDER BY, the +** the pOrderBy terms can be matched in any order. With ORDER BY, the ** pOrderBy terms must be matched in strict left-to-right order. */ static i8 wherePathSatisfiesOrderBy( @@ -139737,7 +163833,7 @@ static i8 wherePathSatisfiesOrderBy( ** row of the WhereLoop. Every one-row WhereLoop is automatically ** order-distinct. A WhereLoop that has no columns in the ORDER BY clause ** is not order-distinct. To be order-distinct is not quite the same as being - ** UNIQUE since a UNIQUE column or index can have multiple rows that + ** UNIQUE since a UNIQUE column or index can have multiple rows that ** are NULL and NULL values are equivalent for the purpose of order-distinct. ** To be order-distinct, the columns must be UNIQUE and NOT NULL. ** @@ -139757,7 +163853,9 @@ static i8 wherePathSatisfiesOrderBy( orderDistinctMask = 0; ready = 0; eqOpMask = WO_EQ | WO_IS | WO_ISNULL; - if( wctrlFlags & WHERE_ORDERBY_LIMIT ) eqOpMask |= WO_IN; + if( wctrlFlags & (WHERE_ORDERBY_LIMIT|WHERE_ORDERBY_MAX|WHERE_ORDERBY_MIN) ){ + eqOpMask |= WO_IN; + } for(iLoop=0; isOrderDistinct && obSat0 ) ready |= pLoop->maskSelf; if( iLoopwsFlags & WHERE_VIRTUALTABLE ){ - if( pLoop->u.vtab.isOrdered ) obSat = obDone; + if( pLoop->u.vtab.isOrdered + && ((wctrlFlags&(WHERE_DISTINCTBY|WHERE_SORTBYGROUP))!=WHERE_DISTINCTBY) + ){ + obSat = obDone; + } break; - }else{ - pLoop->u.btree.nIdxCol = 0; + }else if( wctrlFlags & WHERE_DISTINCTBY ){ + pLoop->u.btree.nDistinctCol = 0; } iCur = pWInfo->pTabList->a[pLoop->iTab].iCursor; @@ -139781,23 +163883,28 @@ static i8 wherePathSatisfiesOrderBy( */ for(i=0; ia[i].pExpr); - if( pOBExpr->op!=TK_COLUMN ) continue; + pOBExpr = sqlite3ExprSkipCollateAndLikely(pOrderBy->a[i].pExpr); + if( NEVER(pOBExpr==0) ) continue; + if( pOBExpr->op!=TK_COLUMN && pOBExpr->op!=TK_AGG_COLUMN ) continue; if( pOBExpr->iTable!=iCur ) continue; pTerm = sqlite3WhereFindTerm(&pWInfo->sWC, iCur, pOBExpr->iColumn, ~ready, eqOpMask, 0); if( pTerm==0 ) continue; if( pTerm->eOperator==WO_IN ){ - /* IN terms are only valid for sorting in the ORDER BY LIMIT + /* IN terms are only valid for sorting in the ORDER BY LIMIT ** optimization, and then only if they are actually used ** by the query plan */ - assert( wctrlFlags & WHERE_ORDERBY_LIMIT ); + assert( wctrlFlags & + (WHERE_ORDERBY_LIMIT|WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX) ); for(j=0; jnLTerm && pTerm!=pLoop->aLTerm[j]; j++){} if( j>=pLoop->nLTerm ) continue; } if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 && pOBExpr->iColumn>=0 ){ - if( sqlite3ExprCollSeqMatch(pWInfo->pParse, - pOrderBy->a[i].pExpr, pTerm->pExpr)==0 ){ + Parse *pParse = pWInfo->pParse; + CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pOrderBy->a[i].pExpr); + CollSeq *pColl2 = sqlite3ExprCompareCollSeq(pParse, pTerm->pExpr); + assert( pColl1 ); + if( pColl2==0 || sqlite3StrICmp(pColl1->zName, pColl2->zName) ){ continue; } testcase( pTerm->pExpr->op==TK_IS ); @@ -139818,7 +163925,12 @@ static i8 wherePathSatisfiesOrderBy( assert( nColumn==nKeyCol+1 || !HasRowid(pIndex->pTable) ); assert( pIndex->aiColumn[nColumn-1]==XN_ROWID || !HasRowid(pIndex->pTable)); - isOrderDistinct = IsUniqueIndex(pIndex); + /* All relevant terms of the index must also be non-NULL in order + ** for isOrderDistinct to be true. So the isOrderDistint value + ** computed here might be a false positive. Corrections will be + ** made at tag-20210426-1 below */ + isOrderDistinct = IsUniqueIndex(pIndex) + && (pLoop->wsFlags & WHERE_SKIPSCAN)==0; } /* Loop through all columns of the index and deal with the ones @@ -139829,26 +163941,32 @@ static i8 wherePathSatisfiesOrderBy( for(j=0; j=pLoop->u.btree.nEq + assert( j>=pLoop->u.btree.nEq || (pLoop->aLTerm[j]==0)==(jnSkip) ); if( ju.btree.nEq && j>=pLoop->nSkip ){ u16 eOp = pLoop->aLTerm[j]->eOperator; /* Skip over == and IS and ISNULL terms. (Also skip IN terms when - ** doing WHERE_ORDERBY_LIMIT processing). + ** doing WHERE_ORDERBY_LIMIT processing). Except, IS and ISNULL + ** terms imply that the index is not UNIQUE NOT NULL in which case + ** the loop need to be marked as not order-distinct because it can + ** have repeated NULL rows. ** - ** If the current term is a column of an ((?,?) IN (SELECT...)) + ** If the current term is a column of an ((?,?) IN (SELECT...)) ** expression for which the SELECT returns more than one column, ** check that it is the only column used by this loop. Otherwise, ** if it is one of two or more, none of the columns can be - ** considered to match an ORDER BY term. */ + ** considered to match an ORDER BY term. + */ if( (eOp & eqOpMask)!=0 ){ - if( eOp & WO_ISNULL ){ + if( eOp & (WO_ISNULL|WO_IS) ){ + testcase( eOp & WO_ISNULL ); + testcase( eOp & WO_IS ); testcase( isOrderDistinct ); isOrderDistinct = 0; } - continue; + continue; }else if( ALWAYS(eOp & WO_IN) ){ /* ALWAYS() justification: eOp is an equality operator due to the ** ju.btree.nEq constraint above. Any equality other @@ -139870,7 +163988,7 @@ static i8 wherePathSatisfiesOrderBy( */ if( pIndex ){ iColumn = pIndex->aiColumn[j]; - revIdx = pIndex->aSortOrder[j]; + revIdx = pIndex->aSortOrder[j] & KEYINFO_ORDER_DESC; if( iColumn==pIndex->pTable->iPKey ) iColumn = XN_ROWID; }else{ iColumn = XN_ROWID; @@ -139878,33 +163996,38 @@ static i8 wherePathSatisfiesOrderBy( } /* An unconstrained column that might be NULL means that this - ** WhereLoop is not well-ordered + ** WhereLoop is not well-ordered. tag-20210426-1 */ - if( isOrderDistinct - && iColumn>=0 - && j>=pLoop->u.btree.nEq - && pIndex->pTable->aCol[iColumn].notNull==0 - ){ - isOrderDistinct = 0; + if( isOrderDistinct ){ + if( iColumn>=0 + && j>=pLoop->u.btree.nEq + && pIndex->pTable->aCol[iColumn].notNull==0 + ){ + isOrderDistinct = 0; + } + if( iColumn==XN_EXPR ){ + isOrderDistinct = 0; + } } /* Find the ORDER BY term that corresponds to the j-th column - ** of the index and mark that ORDER BY term off + ** of the index and mark that ORDER BY term off */ isMatch = 0; for(i=0; bOnce && ia[i].pExpr); + pOBExpr = sqlite3ExprSkipCollateAndLikely(pOrderBy->a[i].pExpr); testcase( wctrlFlags & WHERE_GROUPBY ); testcase( wctrlFlags & WHERE_DISTINCTBY ); + if( NEVER(pOBExpr==0) ) continue; if( (wctrlFlags & (WHERE_GROUPBY|WHERE_DISTINCTBY))==0 ) bOnce = 0; if( iColumn>=XN_ROWID ){ - if( pOBExpr->op!=TK_COLUMN ) continue; + if( pOBExpr->op!=TK_COLUMN && pOBExpr->op!=TK_AGG_COLUMN ) continue; if( pOBExpr->iTable!=iCur ) continue; if( pOBExpr->iColumn!=iColumn ) continue; }else{ - Expr *pIdxExpr = pIndex->aColExpr->a[j].pExpr; - if( sqlite3ExprCompareSkip(pOBExpr, pIdxExpr, iCur) ){ + Expr *pIxExpr = pIndex->aColExpr->a[j].pExpr; + if( sqlite3ExprCompareSkip(pOBExpr, pIxExpr, iCur) ){ continue; } } @@ -139912,7 +164035,9 @@ static i8 wherePathSatisfiesOrderBy( pColl = sqlite3ExprNNCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr); if( sqlite3StrICmp(pColl->zName, pIndex->azColl[j])!=0 ) continue; } - pLoop->u.btree.nIdxCol = j+1; + if( wctrlFlags & WHERE_DISTINCTBY ){ + pLoop->u.btree.nDistinctCol = j+1; + } isMatch = 1; break; } @@ -139920,13 +164045,24 @@ static i8 wherePathSatisfiesOrderBy( /* Make sure the sort order is compatible in an ORDER BY clause. ** Sort order is irrelevant for a GROUP BY clause. */ if( revSet ){ - if( (rev ^ revIdx)!=pOrderBy->a[i].sortOrder ) isMatch = 0; + if( (rev ^ revIdx) + != (pOrderBy->a[i].fg.sortFlags&KEYINFO_ORDER_DESC) + ){ + isMatch = 0; + } }else{ - rev = revIdx ^ pOrderBy->a[i].sortOrder; + rev = revIdx ^ (pOrderBy->a[i].fg.sortFlags & KEYINFO_ORDER_DESC); if( rev ) *pRevMask |= MASKBIT(iLoop); revSet = 1; } } + if( isMatch && (pOrderBy->a[i].fg.sortFlags & KEYINFO_ORDER_BIGNULL) ){ + if( j==pLoop->u.btree.nEq ){ + pLoop->wsFlags |= WHERE_BIGNULL_SORT; + }else{ + isMatch = 0; + } + } if( isMatch ){ if( iColumn==XN_ROWID ){ testcase( distinctColumns==0 ); @@ -139967,7 +164103,7 @@ static i8 wherePathSatisfiesOrderBy( if( obSat==obDone ) return (i8)nOrderBy; if( !isOrderDistinct ){ for(i=nOrderBy-1; i>0; i--){ - Bitmask m = MASKBIT(i) - 1; + Bitmask m = ALWAYS(iwctrlFlags & WHERE_GROUPBY ); + assert( pWInfo->wctrlFlags & (WHERE_GROUPBY|WHERE_DISTINCTBY) ); assert( pWInfo->wctrlFlags & WHERE_SORTBYGROUP ); return pWInfo->sorted; } @@ -140018,38 +164154,65 @@ static const char *wherePathName(WherePath *pPath, int nLoop, WhereLoop *pLast){ #endif /* -** Return the cost of sorting nRow rows, assuming that the keys have +** Return the cost of sorting nRow rows, assuming that the keys have ** nOrderby columns and that the first nSorted columns are already in ** order. */ static LogEst whereSortingCost( - WhereInfo *pWInfo, - LogEst nRow, - int nOrderBy, - int nSorted + WhereInfo *pWInfo, /* Query planning context */ + LogEst nRow, /* Estimated number of rows to sort */ + int nOrderBy, /* Number of ORDER BY clause terms */ + int nSorted /* Number of initial ORDER BY terms naturally in order */ ){ - /* TUNING: Estimated cost of a full external sort, where N is + /* Estimated cost of a full external sort, where N is ** the number of rows to sort is: ** - ** cost = (3.0 * N * log(N)). - ** - ** Or, if the order-by clause has X terms but only the last Y - ** terms are out of order, then block-sorting will reduce the + ** cost = (K * N * log(N)). + ** + ** Or, if the order-by clause has X terms but only the last Y + ** terms are out of order, then block-sorting will reduce the ** sorting cost to: ** - ** cost = (3.0 * N * log(N)) * (Y/X) + ** cost = (K * N * log(N)) * (Y/X) ** - ** The (Y/X) term is implemented using stack variable rScale - ** below. */ - LogEst rScale, rSortCost; - assert( nOrderBy>0 && 66==sqlite3LogEst(100) ); - rScale = sqlite3LogEst((nOrderBy-nSorted)*100/nOrderBy) - 66; - rSortCost = nRow + rScale + 16; + ** The constant K is at least 2.0 but will be larger if there are a + ** large number of columns to be sorted, as the sorting time is + ** proportional to the amount of content to be sorted. The algorithm + ** does not currently distinguish between fat columns (BLOBs and TEXTs) + ** and skinny columns (INTs). It just uses the number of columns as + ** an approximation for the row width. + ** + ** And extra factor of 2.0 or 3.0 is added to the sorting cost if the sort + ** is built using OP_IdxInsert and OP_Sort rather than with OP_SorterInsert. + */ + LogEst rSortCost, nCol; + assert( pWInfo->pSelect!=0 ); + assert( pWInfo->pSelect->pEList!=0 ); + /* TUNING: sorting cost proportional to the number of output columns: */ + nCol = sqlite3LogEst((pWInfo->pSelect->pEList->nExpr+59)/30); + rSortCost = nRow + nCol; + if( nSorted>0 ){ + /* Scale the result by (Y/X) */ + rSortCost += sqlite3LogEst((nOrderBy-nSorted)*100/nOrderBy) - 66; + } /* Multiple by log(M) where M is the number of output rows. - ** Use the LIMIT for M if it is smaller */ - if( (pWInfo->wctrlFlags & WHERE_USE_LIMIT)!=0 && pWInfo->iLimitiLimit; + ** Use the LIMIT for M if it is smaller. Or if this sort is for + ** a DISTINCT operator, M will be the number of distinct output + ** rows, so fudge it downwards a bit. + */ + if( (pWInfo->wctrlFlags & WHERE_USE_LIMIT)!=0 ){ + rSortCost += 10; /* TUNING: Extra 2.0x if using LIMIT */ + if( nSorted!=0 ){ + rSortCost += 6; /* TUNING: Extra 1.5x if also using partial sort */ + } + if( pWInfo->iLimitiLimit; + } + }else if( (pWInfo->wctrlFlags & WHERE_WANT_DISTINCT) ){ + /* TUNING: In the sort for a DISTINCT operator, assume that the DISTINCT + ** reduces the number of output rows by a factor of 2 */ + if( nRow>10 ){ nRow -= 10; assert( 10==sqlite3LogEst(2) ); } } rSortCost += estLog(nRow); return rSortCost; @@ -140071,7 +164234,6 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ int mxChoice; /* Maximum number of simultaneous paths tracked */ int nLoop; /* Number of terms in the join */ Parse *pParse; /* Parsing context */ - sqlite3 *db; /* The database connection */ int iLoop; /* Loop counter over the terms of the join */ int ii, jj; /* Loop counters */ int mxI = 0; /* Index of next entry to replace */ @@ -140090,14 +164252,14 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ int nSpace; /* Bytes of space allocated at pSpace */ pParse = pWInfo->pParse; - db = pParse->db; nLoop = pWInfo->nLevel; /* TUNING: For simple queries, only the best path is tracked. ** For 2-way joins, the 5 best paths are followed. ** For joins of 3 or more tables, track the 10 best paths */ mxChoice = (nLoop<=1) ? 1 : (nLoop==2 ? 5 : 10); assert( nLoop<=pWInfo->pTabList->nSrc ); - WHERETRACE(0x002, ("---- begin solver. (nRowEst=%d)\n", nRowEst)); + WHERETRACE(0x002, ("---- begin solver. (nRowEst=%d, nQueryLoop=%d)\n", + nRowEst, pParse->nQueryLoop)); /* If nRowEst is zero and there is an ORDER BY clause, ignore it. In this ** case the purpose of this call is to estimate the number of rows returned @@ -140113,7 +164275,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ /* Allocate and initialize space for aTo, aFrom and aSortCost[] */ nSpace = (sizeof(WherePath)+sizeof(WhereLoop*)*nLoop)*mxChoice*2; nSpace += sizeof(LogEst) * nOrderBy; - pSpace = sqlite3DbMallocRawNN(db, nSpace); + pSpace = sqlite3StackAllocRawNN(pParse->db, nSpace); if( pSpace==0 ) return SQLITE_NOMEM_BKPT; aTo = (WherePath*)pSpace; aFrom = aTo+mxChoice; @@ -140127,7 +164289,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ ** space for the aSortCost[] array. Each element of the aSortCost array ** is either zero - meaning it has not yet been initialized - or the ** cost of sorting nRowEst rows of data where the first X terms of - ** the ORDER BY clause are already in order, where X is the array + ** the ORDER BY clause are already in order, where X is the array ** index. */ aSortCost = (LogEst*)pX; memset(aSortCost, 0, sizeof(LogEst) * nOrderBy); @@ -140148,7 +164310,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ ** in this case the query may return a maximum of one row, the results ** are already in the requested order. Set isOrdered to nOrderBy to ** indicate this. Or, if nLoop is greater than zero, set isOrdered to - ** -1, indicating that the result set may or may not be ordered, + ** -1, indicating that the result set may or may not be ordered, ** depending on the loops added to the current plan. */ aFrom[0].isOrdered = nLoop>0 ? -1 : nOrderBy; } @@ -140163,9 +164325,9 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ LogEst nOut; /* Rows visited by (pFrom+pWLoop) */ LogEst rCost; /* Cost of path (pFrom+pWLoop) */ LogEst rUnsorted; /* Unsorted cost of (pFrom+pWLoop) */ - i8 isOrdered = pFrom->isOrdered; /* isOrdered for (pFrom+pWLoop) */ + i8 isOrdered; /* isOrdered for (pFrom+pWLoop) */ Bitmask maskNew; /* Mask of src visited by (..) */ - Bitmask revMask = 0; /* Mask of rev-order loops for (..) */ + Bitmask revMask; /* Mask of rev-order loops for (..) */ if( (pWLoop->prereq & ~pFrom->maskLoop)!=0 ) continue; if( (pWLoop->maskSelf & pFrom->maskLoop)!=0 ) continue; @@ -140178,13 +164340,15 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ continue; } - /* At this point, pWLoop is a candidate to be the next loop. + /* At this point, pWLoop is a candidate to be the next loop. ** Compute its cost */ rUnsorted = sqlite3LogEstAdd(pWLoop->rSetup,pWLoop->rRun + pFrom->nRow); rUnsorted = sqlite3LogEstAdd(rUnsorted, pFrom->rUnsorted); nOut = pFrom->nRow + pWLoop->nOut; maskNew = pFrom->maskLoop | pWLoop->maskSelf; + isOrdered = pFrom->isOrdered; if( isOrdered<0 ){ + revMask = 0; isOrdered = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, pFrom, pWInfo->wctrlFlags, iLoop, pWLoop, &revMask); @@ -140197,17 +164361,29 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ pWInfo, nRowEst, nOrderBy, isOrdered ); } - rCost = sqlite3LogEstAdd(rUnsorted, aSortCost[isOrdered]); + /* TUNING: Add a small extra penalty (3) to sorting as an + ** extra encouragement to the query planner to select a plan + ** where the rows emerge in the correct order without any sorting + ** required. */ + rCost = sqlite3LogEstAdd(rUnsorted, aSortCost[isOrdered]) + 3; WHERETRACE(0x002, ("---- sort cost=%-3d (%d/%d) increases cost %3d to %-3d\n", - aSortCost[isOrdered], (nOrderBy-isOrdered), nOrderBy, + aSortCost[isOrdered], (nOrderBy-isOrdered), nOrderBy, rUnsorted, rCost)); }else{ rCost = rUnsorted; rUnsorted -= 2; /* TUNING: Slight bias in favor of no-sort plans */ } + /* TUNING: A full-scan of a VIEW or subquery in the outer loop + ** is not so bad. */ + if( iLoop==0 && (pWLoop->wsFlags & WHERE_VIEWSCAN)!=0 && nLoop>1 ){ + rCost += -10; + nOut += -30; + WHERETRACE(0x80,("VIEWSCAN cost reduction for %c\n",pWLoop->cId)); + } + /* Check to see if pWLoop should be added to the set of ** mxChoice best-so-far paths. ** @@ -140266,11 +164442,11 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ ** same set of loops and has the same isOrdered setting as the ** candidate path. Check to see if the candidate should replace ** pTo or if the candidate should be skipped. - ** + ** ** The conditional is an expanded vector comparison equivalent to: ** (pTo->rCost,pTo->nRow,pTo->rUnsorted) <= (rCost,nOut,rUnsorted) */ - if( pTo->rCostrCostrCost==rCost && (pTo->nRownRow==nOut && pTo->rUnsorted<=rUnsorted) @@ -140321,8 +164497,8 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ mxCost = aTo[0].rCost; mxUnsorted = aTo[0].nRow; for(jj=1, pTo=&aTo[1]; jjrCost>mxCost - || (pTo->rCost==mxCost && pTo->rUnsorted>mxUnsorted) + if( pTo->rCost>mxCost + || (pTo->rCost==mxCost && pTo->rUnsorted>mxUnsorted) ){ mxCost = pTo->rCost; mxUnsorted = pTo->rUnsorted; @@ -140358,10 +164534,10 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ if( nFrom==0 ){ sqlite3ErrorMsg(pParse, "no query solution"); - sqlite3DbFreeNN(db, pSpace); + sqlite3StackFreeNN(pParse->db, pSpace); return SQLITE_ERROR; } - + /* Find the lowest cost path. pFrom will be left pointing to that path */ pFrom = aFrom; for(ii=1; iieDistinct = WHERE_DISTINCT_ORDERED; } } + pWInfo->bOrderedInnerLoop = 0; if( pWInfo->pOrderBy ){ + pWInfo->nOBSat = pFrom->isOrdered; if( pWInfo->wctrlFlags & WHERE_DISTINCTBY ){ if( pFrom->isOrdered==pWInfo->pOrderBy->nExpr ){ pWInfo->eDistinct = WHERE_DISTINCT_ORDERED; } + if( pWInfo->pSelect->pOrderBy + && pWInfo->nOBSat > pWInfo->pSelect->pOrderBy->nExpr ){ + pWInfo->nOBSat = pWInfo->pSelect->pOrderBy->nExpr; + } }else{ - pWInfo->nOBSat = pFrom->isOrdered; pWInfo->revMask = pFrom->revLoop; if( pWInfo->nOBSat<=0 ){ pWInfo->nOBSat = 0; if( nLoop>0 ){ u32 wsFlags = pFrom->aLoop[nLoop-1]->wsFlags; - if( (wsFlags & WHERE_ONEROW)==0 + if( (wsFlags & WHERE_ONEROW)==0 && (wsFlags&(WHERE_IPK|WHERE_COLUMN_IN))!=(WHERE_IPK|WHERE_COLUMN_IN) ){ Bitmask m = 0; @@ -140413,13 +164594,18 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ } } } + }else if( nLoop + && pWInfo->nOBSat==1 + && (pWInfo->wctrlFlags & (WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX))!=0 + ){ + pWInfo->bOrderedInnerLoop = 1; } } if( (pWInfo->wctrlFlags & WHERE_SORTBYGROUP) && pWInfo->nOBSat==pWInfo->pOrderBy->nExpr && nLoop>0 ){ Bitmask revMask = 0; - int nOrder = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, + int nOrder = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, pFrom, 0, nLoop-1, pFrom->aLoop[nLoop-1], &revMask ); assert( pWInfo->sorted==0 ); @@ -140434,7 +164620,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ pWInfo->nRowOut = pFrom->nRow; /* Free temporary memory and return success */ - sqlite3DbFreeNN(db, pSpace); + sqlite3StackFreeNN(pParse->db, pSpace); return SQLITE_OK; } @@ -140446,12 +164632,12 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ ** times for the common case. ** ** Return non-zero on success, if this query can be handled by this -** no-frills query planner. Return zero if this query needs the +** no-frills query planner. Return zero if this query needs the ** general-purpose query planner. */ static int whereShortCut(WhereLoopBuilder *pBuilder){ WhereInfo *pWInfo; - struct SrcList_item *pItem; + SrcItem *pItem; WhereClause *pWC; WhereTerm *pTerm; WhereLoop *pLoop; @@ -140459,6 +164645,7 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ int j; Table *pTab; Index *pIdx; + WhereScan scan; pWInfo = pBuilder->pWInfo; if( pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE ) return 0; @@ -140466,13 +164653,18 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ pItem = pWInfo->pTabList->a; pTab = pItem->pTab; if( IsVirtual(pTab) ) return 0; - if( pItem->fg.isIndexedBy ) return 0; + if( pItem->fg.isIndexedBy || pItem->fg.notIndexed ){ + testcase( pItem->fg.isIndexedBy ); + testcase( pItem->fg.notIndexed ); + return 0; + } iCur = pItem->iCursor; pWC = &pWInfo->sWC; pLoop = pBuilder->pNew; pLoop->wsFlags = 0; pLoop->nSkip = 0; - pTerm = sqlite3WhereFindTerm(pWC, iCur, -1, 0, WO_EQ|WO_IS, 0); + pTerm = whereScanInit(&scan, pWC, iCur, -1, WO_EQ|WO_IS, 0); + while( pTerm && pTerm->prereqRight ) pTerm = whereScanNext(&scan); if( pTerm ){ testcase( pTerm->eOperator & WO_IS ); pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_IPK|WHERE_ONEROW; @@ -140486,19 +164678,20 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ int opMask; assert( pLoop->aLTermSpace==pLoop->aLTerm ); if( !IsUniqueIndex(pIdx) - || pIdx->pPartIdxWhere!=0 - || pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace) + || pIdx->pPartIdxWhere!=0 + || pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace) ) continue; opMask = pIdx->uniqNotNull ? (WO_EQ|WO_IS) : WO_EQ; for(j=0; jnKeyCol; j++){ - pTerm = sqlite3WhereFindTerm(pWC, iCur, j, 0, opMask, pIdx); + pTerm = whereScanInit(&scan, pWC, iCur, j, opMask, pIdx); + while( pTerm && pTerm->prereqRight ) pTerm = whereScanNext(&scan); if( pTerm==0 ) break; testcase( pTerm->eOperator & WO_IS ); pLoop->aLTerm[j] = pTerm; } if( j!=pIdx->nKeyCol ) continue; pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_ONEROW|WHERE_INDEXED; - if( pIdx->isCovering || (pItem->colUsed & ~columnsInIndex(pIdx))==0 ){ + if( pIdx->isCovering || (pItem->colUsed & pIdx->colNotIdxed)==0 ){ pLoop->wsFlags |= WHERE_IDX_ONLY; } pLoop->nLTerm = j; @@ -140520,8 +164713,14 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ if( pWInfo->wctrlFlags & WHERE_WANT_DISTINCT ){ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; } + if( scan.iEquiv>1 ) pLoop->wsFlags |= WHERE_TRANSCONS; #ifdef SQLITE_DEBUG pLoop->cId = '0'; +#endif +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace & 0x02 ){ + sqlite3DebugPrintf("whereShortCut() used to compute solution\n"); + } #endif return 1; } @@ -140540,8 +164739,8 @@ static int exprNodeIsDeterministic(Walker *pWalker, Expr *pExpr){ } /* -** Return true if the expression contains no non-deterministic SQL -** functions. Do not consider non-deterministic SQL functions that are +** Return true if the expression contains no non-deterministic SQL +** functions. Do not consider non-deterministic SQL functions that are ** part of sub-select statements. */ static int exprIsDeterministic(Expr *p){ @@ -140554,6 +164753,288 @@ static int exprIsDeterministic(Expr *p){ return w.eCode; } + +#ifdef WHERETRACE_ENABLED +/* +** Display all WhereLoops in pWInfo +*/ +static void showAllWhereLoops(WhereInfo *pWInfo, WhereClause *pWC){ + if( sqlite3WhereTrace ){ /* Display all of the WhereLoop objects */ + WhereLoop *p; + int i; + static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz" + "ABCDEFGHIJKLMNOPQRSTUVWYXZ"; + for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){ + p->cId = zLabel[i%(sizeof(zLabel)-1)]; + sqlite3WhereLoopPrint(p, pWC); + } + } +} +# define WHERETRACE_ALL_LOOPS(W,C) showAllWhereLoops(W,C) +#else +# define WHERETRACE_ALL_LOOPS(W,C) +#endif + +/* Attempt to omit tables from a join that do not affect the result. +** For a table to not affect the result, the following must be true: +** +** 1) The query must not be an aggregate. +** 2) The table must be the RHS of a LEFT JOIN. +** 3) Either the query must be DISTINCT, or else the ON or USING clause +** must contain a constraint that limits the scan of the table to +** at most a single row. +** 4) The table must not be referenced by any part of the query apart +** from its own USING or ON clause. +** 5) The table must not have an inner-join ON or USING clause if there is +** a RIGHT JOIN anywhere in the query. Otherwise the ON/USING clause +** might move from the right side to the left side of the RIGHT JOIN. +** Note: Due to (2), this condition can only arise if the table is +** the right-most table of a subquery that was flattened into the +** main query and that subquery was the right-hand operand of an +** inner join that held an ON or USING clause. +** +** For example, given: +** +** CREATE TABLE t1(ipk INTEGER PRIMARY KEY, v1); +** CREATE TABLE t2(ipk INTEGER PRIMARY KEY, v2); +** CREATE TABLE t3(ipk INTEGER PRIMARY KEY, v3); +** +** then table t2 can be omitted from the following: +** +** SELECT v1, v3 FROM t1 +** LEFT JOIN t2 ON (t1.ipk=t2.ipk) +** LEFT JOIN t3 ON (t1.ipk=t3.ipk) +** +** or from: +** +** SELECT DISTINCT v1, v3 FROM t1 +** LEFT JOIN t2 +** LEFT JOIN t3 ON (t1.ipk=t3.ipk) +*/ +static SQLITE_NOINLINE Bitmask whereOmitNoopJoin( + WhereInfo *pWInfo, + Bitmask notReady +){ + int i; + Bitmask tabUsed; + int hasRightJoin; + + /* Preconditions checked by the caller */ + assert( pWInfo->nLevel>=2 ); + assert( OptimizationEnabled(pWInfo->pParse->db, SQLITE_OmitNoopJoin) ); + + /* These two preconditions checked by the caller combine to guarantee + ** condition (1) of the header comment */ + assert( pWInfo->pResultSet!=0 ); + assert( 0==(pWInfo->wctrlFlags & WHERE_AGG_DISTINCT) ); + + tabUsed = sqlite3WhereExprListUsage(&pWInfo->sMaskSet, pWInfo->pResultSet); + if( pWInfo->pOrderBy ){ + tabUsed |= sqlite3WhereExprListUsage(&pWInfo->sMaskSet, pWInfo->pOrderBy); + } + hasRightJoin = (pWInfo->pTabList->a[0].fg.jointype & JT_LTORJ)!=0; + for(i=pWInfo->nLevel-1; i>=1; i--){ + WhereTerm *pTerm, *pEnd; + SrcItem *pItem; + WhereLoop *pLoop; + pLoop = pWInfo->a[i].pWLoop; + pItem = &pWInfo->pTabList->a[pLoop->iTab]; + if( (pItem->fg.jointype & (JT_LEFT|JT_RIGHT))!=JT_LEFT ) continue; + if( (pWInfo->wctrlFlags & WHERE_WANT_DISTINCT)==0 + && (pLoop->wsFlags & WHERE_ONEROW)==0 + ){ + continue; + } + if( (tabUsed & pLoop->maskSelf)!=0 ) continue; + pEnd = pWInfo->sWC.a + pWInfo->sWC.nTerm; + for(pTerm=pWInfo->sWC.a; pTermprereqAll & pLoop->maskSelf)!=0 ){ + if( !ExprHasProperty(pTerm->pExpr, EP_OuterON) + || pTerm->pExpr->w.iJoin!=pItem->iCursor + ){ + break; + } + } + if( hasRightJoin + && ExprHasProperty(pTerm->pExpr, EP_InnerON) + && pTerm->pExpr->w.iJoin==pItem->iCursor + ){ + break; /* restriction (5) */ + } + } + if( pTerm drop loop %c not used\n", pLoop->cId)); + notReady &= ~pLoop->maskSelf; + for(pTerm=pWInfo->sWC.a; pTermprereqAll & pLoop->maskSelf)!=0 ){ + pTerm->wtFlags |= TERM_CODED; + } + } + if( i!=pWInfo->nLevel-1 ){ + int nByte = (pWInfo->nLevel-1-i) * sizeof(WhereLevel); + memmove(&pWInfo->a[i], &pWInfo->a[i+1], nByte); + } + pWInfo->nLevel--; + assert( pWInfo->nLevel>0 ); + } + return notReady; +} + +/* +** Check to see if there are any SEARCH loops that might benefit from +** using a Bloom filter. Consider a Bloom filter if: +** +** (1) The SEARCH happens more than N times where N is the number +** of rows in the table that is being considered for the Bloom +** filter. +** (2) Some searches are expected to find zero rows. (This is determined +** by the WHERE_SELFCULL flag on the term.) +** (3) Bloom-filter processing is not disabled. (Checked by the +** caller.) +** (4) The size of the table being searched is known by ANALYZE. +** +** This block of code merely checks to see if a Bloom filter would be +** appropriate, and if so sets the WHERE_BLOOMFILTER flag on the +** WhereLoop. The implementation of the Bloom filter comes further +** down where the code for each WhereLoop is generated. +*/ +static SQLITE_NOINLINE void whereCheckIfBloomFilterIsUseful( + const WhereInfo *pWInfo +){ + int i; + LogEst nSearch = 0; + + assert( pWInfo->nLevel>=2 ); + assert( OptimizationEnabled(pWInfo->pParse->db, SQLITE_BloomFilter) ); + for(i=0; inLevel; i++){ + WhereLoop *pLoop = pWInfo->a[i].pWLoop; + const unsigned int reqFlags = (WHERE_SELFCULL|WHERE_COLUMN_EQ); + SrcItem *pItem = &pWInfo->pTabList->a[pLoop->iTab]; + Table *pTab = pItem->pTab; + if( (pTab->tabFlags & TF_HasStat1)==0 ) break; + pTab->tabFlags |= TF_StatsUsed; + if( i>=1 + && (pLoop->wsFlags & reqFlags)==reqFlags + /* vvvvvv--- Always the case if WHERE_COLUMN_EQ is defined */ + && ALWAYS((pLoop->wsFlags & (WHERE_IPK|WHERE_INDEXED))!=0) + ){ + if( nSearch > pTab->nRowLogEst ){ + testcase( pItem->fg.jointype & JT_LEFT ); + pLoop->wsFlags |= WHERE_BLOOMFILTER; + pLoop->wsFlags &= ~WHERE_IDX_ONLY; + WHERETRACE(0xffffffff, ( + "-> use Bloom-filter on loop %c because there are ~%.1e " + "lookups into %s which has only ~%.1e rows\n", + pLoop->cId, (double)sqlite3LogEstToInt(nSearch), pTab->zName, + (double)sqlite3LogEstToInt(pTab->nRowLogEst))); + } + } + nSearch += pLoop->nOut; + } +} + +/* +** This is an sqlite3ParserAddCleanup() callback that is invoked to +** free the Parse->pIdxEpr list when the Parse object is destroyed. +*/ +static void whereIndexedExprCleanup(sqlite3 *db, void *pObject){ + Parse *pParse = (Parse*)pObject; + while( pParse->pIdxEpr!=0 ){ + IndexedExpr *p = pParse->pIdxEpr; + pParse->pIdxEpr = p->pIENext; + sqlite3ExprDelete(db, p->pExpr); + sqlite3DbFreeNN(db, p); + } +} + +/* +** The index pIdx is used by a query and contains one or more expressions. +** In other words pIdx is an index on an expression. iIdxCur is the cursor +** number for the index and iDataCur is the cursor number for the corresponding +** table. +** +** This routine adds IndexedExpr entries to the Parse->pIdxEpr field for +** each of the expressions in the index so that the expression code generator +** will know to replace occurrences of the indexed expression with +** references to the corresponding column of the index. +*/ +static SQLITE_NOINLINE void whereAddIndexedExpr( + Parse *pParse, /* Add IndexedExpr entries to pParse->pIdxEpr */ + Index *pIdx, /* The index-on-expression that contains the expressions */ + int iIdxCur, /* Cursor number for pIdx */ + SrcItem *pTabItem /* The FROM clause entry for the table */ +){ + int i; + IndexedExpr *p; + Table *pTab; + assert( pIdx->bHasExpr ); + pTab = pIdx->pTable; + for(i=0; inColumn; i++){ + Expr *pExpr; + int j = pIdx->aiColumn[i]; + int bMaybeNullRow; + if( j==XN_EXPR ){ + pExpr = pIdx->aColExpr->a[i].pExpr; + testcase( pTabItem->fg.jointype & JT_LEFT ); + testcase( pTabItem->fg.jointype & JT_RIGHT ); + testcase( pTabItem->fg.jointype & JT_LTORJ ); + bMaybeNullRow = (pTabItem->fg.jointype & (JT_LEFT|JT_LTORJ|JT_RIGHT))!=0; + }else if( j>=0 && (pTab->aCol[j].colFlags & COLFLAG_VIRTUAL)!=0 ){ + pExpr = sqlite3ColumnExpr(pTab, &pTab->aCol[j]); + bMaybeNullRow = 0; + }else{ + continue; + } + if( sqlite3ExprIsConstant(pExpr) ) continue; + p = sqlite3DbMallocRaw(pParse->db, sizeof(IndexedExpr)); + if( p==0 ) break; + p->pIENext = pParse->pIdxEpr; +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace & 0x200 ){ + sqlite3DebugPrintf("New pParse->pIdxEpr term {%d,%d}\n", iIdxCur, i); + if( sqlite3WhereTrace & 0x5000 ) sqlite3ShowExpr(pExpr); + } +#endif + p->pExpr = sqlite3ExprDup(pParse->db, pExpr, 0); + p->iDataCur = pTabItem->iCursor; + p->iIdxCur = iIdxCur; + p->iIdxCol = i; + p->bMaybeNullRow = bMaybeNullRow; + if( sqlite3IndexAffinityStr(pParse->db, pIdx) ){ + p->aff = pIdx->zColAff[i]; + } +#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS + p->zIdxName = pIdx->zName; +#endif + pParse->pIdxEpr = p; + if( p->pIENext==0 ){ + sqlite3ParserAddCleanup(pParse, whereIndexedExprCleanup, pParse); + } + } +} + +/* +** Set the reverse-scan order mask to one for all tables in the query +** with the exception of MATERIALIZED common table expressions that have +** their own internal ORDER BY clauses. +** +** This implements the PRAGMA reverse_unordered_selects=ON setting. +** (Also SQLITE_DBCONFIG_REVERSE_SCANORDER). +*/ +static SQLITE_NOINLINE void whereReverseScanOrder(WhereInfo *pWInfo){ + int ii; + for(ii=0; iipTabList->nSrc; ii++){ + SrcItem *pItem = &pWInfo->pTabList->a[ii]; + if( !pItem->fg.isCte + || pItem->u2.pCteUse->eM10d!=M10d_Yes + || NEVER(pItem->pSelect==0) + || pItem->pSelect->pOrderBy==0 + ){ + pWInfo->revMask |= MASKBIT(ii); + } + } +} + /* ** Generate the beginning of the loop used for WHERE clause processing. ** The return value is a pointer to an opaque structure that contains @@ -140612,7 +165093,7 @@ static int exprIsDeterministic(Expr *p){ ** ** OUTER JOINS ** -** An outer join of tables t1 and t2 is conceptally coded as follows: +** An outer join of tables t1 and t2 is conceptually coded as follows: ** ** foreach row1 in t1 do ** flag = 0 @@ -140634,7 +165115,7 @@ static int exprIsDeterministic(Expr *p){ ** if there is one. If there is no ORDER BY clause or if this routine ** is called from an UPDATE or DELETE statement, then pOrderBy is NULL. ** -** The iIdxCur parameter is the cursor number of an index. If +** The iIdxCur parameter is the cursor number of an index. If ** WHERE_OR_SUBCLAUSE is set, iIdxCur is the cursor number of an index ** to use for OR clause processing. The WHERE clause should use this ** specific cursor. If WHERE_ONEPASS_DESIRED is set, then iIdxCur is @@ -140648,6 +165129,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( Expr *pWhere, /* The WHERE clause */ ExprList *pOrderBy, /* An ORDER BY (or GROUP BY) clause, or NULL */ ExprList *pResultSet, /* Query result set. Req'd for DISTINCT */ + Select *pSelect, /* The entire SELECT statement */ u16 wctrlFlags, /* The WHERE_* flags defined in sqliteInt.h */ int iAuxArg /* If WHERE_OR_SUBCLAUSE is set, index cursor number ** If WHERE_USE_LIMIT, then the limit amount */ @@ -140667,8 +165149,8 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( u8 bFordelete = 0; /* OPFLAG_FORDELETE or zero, as appropriate */ assert( (wctrlFlags & WHERE_ONEPASS_MULTIROW)==0 || ( - (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 - && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 + (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 + && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 )); /* Only one of WHERE_OR_SUBCLAUSE or WHERE_USE_LIMIT */ @@ -140682,16 +165164,9 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* An ORDER/GROUP BY clause of more than 63 terms cannot be optimized */ testcase( pOrderBy && pOrderBy->nExpr==BMS-1 ); if( pOrderBy && pOrderBy->nExpr>=BMS ) pOrderBy = 0; - sWLB.pOrderBy = pOrderBy; - - /* Disable the DISTINCT optimization if SQLITE_DistinctOpt is set via - ** sqlite3_test_ctrl(SQLITE_TESTCTRL_OPTIMIZATIONS,...) */ - if( OptimizationDisabled(db, SQLITE_DistinctOpt) ){ - wctrlFlags &= ~WHERE_WANT_DISTINCT; - } /* The number of tables in the FROM clause is limited by the number of - ** bits in a Bitmask + ** bits in a Bitmask */ testcase( pTabList->nSrc==BMS ); if( pTabList->nSrc>BMS ){ @@ -140699,7 +165174,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( return 0; } - /* This function normally generates a nested loop for all tables in + /* This function normally generates a nested loop for all tables in ** pTabList. But if the WHERE_OR_SUBCLAUSE flag is set, then we should ** only generate code for the first table in pTabList and assume that ** any cursors associated with subsequent tables are uninitialized. @@ -140713,7 +165188,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( ** field (type Bitmask) it must be aligned on an 8-byte boundary on ** some architectures. Hence the ROUND8() below. */ - nByteWInfo = ROUND8(sizeof(WhereInfo)+(nTabList-1)*sizeof(WhereLevel)); + nByteWInfo = ROUND8P(sizeof(WhereInfo)+(nTabList-1)*sizeof(WhereLevel)); pWInfo = sqlite3DbMallocRawNN(db, nByteWInfo + sizeof(WhereLoop)); if( db->mallocFailed ){ sqlite3DbFree(db, pWInfo); @@ -140723,19 +165198,26 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( pWInfo->pParse = pParse; pWInfo->pTabList = pTabList; pWInfo->pOrderBy = pOrderBy; +#if WHERETRACE_ENABLED pWInfo->pWhere = pWhere; +#endif pWInfo->pResultSet = pResultSet; pWInfo->aiCurOnePass[0] = pWInfo->aiCurOnePass[1] = -1; pWInfo->nLevel = nTabList; - pWInfo->iBreak = pWInfo->iContinue = sqlite3VdbeMakeLabel(v); + pWInfo->iBreak = pWInfo->iContinue = sqlite3VdbeMakeLabel(pParse); pWInfo->wctrlFlags = wctrlFlags; pWInfo->iLimit = iAuxArg; pWInfo->savedNQueryLoop = pParse->nQueryLoop; - memset(&pWInfo->nOBSat, 0, + pWInfo->pSelect = pSelect; + memset(&pWInfo->nOBSat, 0, offsetof(WhereInfo,sWC) - offsetof(WhereInfo,nOBSat)); memset(&pWInfo->a[0], 0, sizeof(WhereLoop)+nTabList*sizeof(WhereLevel)); assert( pWInfo->eOnePass==ONEPASS_OFF ); /* ONEPASS defaults to OFF */ pMaskSet = &pWInfo->sMaskSet; + pMaskSet->n = 0; + pMaskSet->ix[0] = -99; /* Initialize ix[0] to a value that can never be + ** a valid cursor number, to avoid an initial + ** test for pMaskSet->n==0 in sqlite3WhereGetMask() */ sWLB.pWInfo = pWInfo; sWLB.pWC = &pWInfo->sWC; sWLB.pNew = (WhereLoop*)(((char*)pWInfo)+nByteWInfo); @@ -140748,15 +165230,16 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* Split the WHERE clause into separate subexpressions where each ** subexpression is separated by an AND operator. */ - initMaskSet(pMaskSet); sqlite3WhereClauseInit(&pWInfo->sWC, pWInfo); sqlite3WhereSplit(&pWInfo->sWC, pWhere, TK_AND); - + /* Special case: No FROM clause */ if( nTabList==0 ){ if( pOrderBy ) pWInfo->nOBSat = pOrderBy->nExpr; - if( wctrlFlags & WHERE_WANT_DISTINCT ){ + if( (wctrlFlags & WHERE_WANT_DISTINCT)!=0 + && OptimizationEnabled(db, SQLITE_DistinctOpt) + ){ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; } ExplainQueryPlan((pParse, 0, "SCAN CONSTANT ROW")); @@ -140765,7 +165248,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( ** ** The N-th term of the FROM clause is assigned a bitmask of 1<sWC); - if( db->mallocFailed ) goto whereBeginError; + if( pSelect && pSelect->pLimit ){ + sqlite3WhereAddLimit(&pWInfo->sWC, pSelect); + } + if( pParse->nErr ) goto whereBeginError; - /* Special case: WHERE terms that do not refer to any tables in the join - ** (constant expressions). Evaluate each such term, and jump over all the - ** generated code if the result is not true. + /* The False-WHERE-Term-Bypass optimization: ** - ** Do not do this if the expression contains non-deterministic functions - ** that are not within a sub-select. This is not strictly required, but - ** preserves SQLite's legacy behaviour in the following two cases: + ** If there are WHERE terms that are false, then no rows will be output, + ** so skip over all of the code generated here. ** - ** FROM ... WHERE random()>0; -- eval random() once per row - ** FROM ... WHERE (SELECT random())>0; -- eval random() once overall + ** Conditions: + ** + ** (1) The WHERE term must not refer to any tables in the join. + ** (2) The term must not come from an ON clause on the + ** right-hand side of a LEFT or FULL JOIN. + ** (3) The term must not come from an ON clause, or there must be + ** no RIGHT or FULL OUTER joins in pTabList. + ** (4) If the expression contains non-deterministic functions + ** that are not within a sub-select. This is not required + ** for correctness but rather to preserves SQLite's legacy + ** behaviour in the following two cases: + ** + ** WHERE random()>0; -- eval random() once per row + ** WHERE (SELECT random())>0; -- eval random() just once overall + ** + ** Note that the Where term need not be a constant in order for this + ** optimization to apply, though it does need to be constant relative to + ** the current subquery (condition 1). The term might include variables + ** from outer queries so that the value of the term changes from one + ** invocation of the current subquery to the next. */ - for(ii=0; iinTerm; ii++){ - WhereTerm *pT = &sWLB.pWC->a[ii]; + for(ii=0; iinBase; ii++){ + WhereTerm *pT = &sWLB.pWC->a[ii]; /* A term of the WHERE clause */ + Expr *pX; /* The expression of pT */ if( pT->wtFlags & TERM_VIRTUAL ) continue; - if( pT->prereqAll==0 && (nTabList==0 || exprIsDeterministic(pT->pExpr)) ){ - sqlite3ExprIfFalse(pParse, pT->pExpr, pWInfo->iBreak, SQLITE_JUMPIFNULL); + pX = pT->pExpr; + assert( pX!=0 ); + assert( pT->prereqAll!=0 || !ExprHasProperty(pX, EP_OuterON) ); + if( pT->prereqAll==0 /* Conditions (1) and (2) */ + && (nTabList==0 || exprIsDeterministic(pX)) /* Condition (4) */ + && !(ExprHasProperty(pX, EP_InnerON) /* Condition (3) */ + && (pTabList->a[0].fg.jointype & JT_LTORJ)!=0 ) + ){ + sqlite3ExprIfFalse(pParse, pX, pWInfo->iBreak, SQLITE_JUMPIFNULL); pT->wtFlags |= TERM_CODED; } } if( wctrlFlags & WHERE_WANT_DISTINCT ){ - if( isDistinctRedundant(pParse, pTabList, &pWInfo->sWC, pResultSet) ){ + if( OptimizationDisabled(db, SQLITE_DistinctOpt) ){ + /* Disable the DISTINCT optimization if SQLITE_DistinctOpt is set via + ** sqlite3_test_ctrl(SQLITE_TESTCTRL_OPTIMIZATIONS,...) */ + wctrlFlags &= ~WHERE_WANT_DISTINCT; + pWInfo->wctrlFlags &= ~WHERE_WANT_DISTINCT; + }else if( isDistinctRedundant(pParse, pTabList, &pWInfo->sWC, pResultSet) ){ /* The DISTINCT marking is pointless. Ignore it. */ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; }else if( pOrderBy==0 ){ @@ -140829,35 +165343,55 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* Construct the WhereLoop objects */ #if defined(WHERETRACE_ENABLED) - if( sqlite3WhereTrace & 0xffff ){ + if( sqlite3WhereTrace & 0xffffffff ){ sqlite3DebugPrintf("*** Optimizer Start *** (wctrlFlags: 0x%x",wctrlFlags); if( wctrlFlags & WHERE_USE_LIMIT ){ sqlite3DebugPrintf(", limit: %d", iAuxArg); } sqlite3DebugPrintf(")\n"); - } - if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */ - sqlite3WhereClausePrint(sWLB.pWC); + if( sqlite3WhereTrace & 0x8000 ){ + Select sSelect; + memset(&sSelect, 0, sizeof(sSelect)); + sSelect.selFlags = SF_WhereBegin; + sSelect.pSrc = pTabList; + sSelect.pWhere = pWhere; + sSelect.pOrderBy = pOrderBy; + sSelect.pEList = pResultSet; + sqlite3TreeViewSelect(0, &sSelect, 0); + } + if( sqlite3WhereTrace & 0x4000 ){ /* Display all WHERE clause terms */ + sqlite3DebugPrintf("---- WHERE clause at start of analysis:\n"); + sqlite3WhereClausePrint(sWLB.pWC); + } } #endif if( nTabList!=1 || whereShortCut(&sWLB)==0 ){ rc = whereLoopAddAll(&sWLB); if( rc ) goto whereBeginError; - -#ifdef WHERETRACE_ENABLED - if( sqlite3WhereTrace ){ /* Display all of the WhereLoop objects */ - WhereLoop *p; - int i; - static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz" - "ABCDEFGHIJKLMNOPQRSTUVWYXZ"; - for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){ - p->cId = zLabel[i%(sizeof(zLabel)-1)]; - whereLoopPrint(p, sWLB.pWC); + +#ifdef SQLITE_ENABLE_STAT4 + /* If one or more WhereTerm.truthProb values were used in estimating + ** loop parameters, but then those truthProb values were subsequently + ** changed based on STAT4 information while computing subsequent loops, + ** then we need to rerun the whole loop building process so that all + ** loops will be built using the revised truthProb values. */ + if( sWLB.bldFlags2 & SQLITE_BLDF2_2NDPASS ){ + WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC); + WHERETRACE(0xffffffff, + ("**** Redo all loop computations due to" + " TERM_HIGHTRUTH changes ****\n")); + while( pWInfo->pLoops ){ + WhereLoop *p = pWInfo->pLoops; + pWInfo->pLoops = p->pNextLoop; + whereLoopDelete(db, p); } + rc = whereLoopAddAll(&sWLB); + if( rc ) goto whereBeginError; } #endif - + WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC); + wherePathSolver(pWInfo, 0); if( db->mallocFailed ) goto whereBeginError; if( pWInfo->pOrderBy ){ @@ -140865,12 +165399,14 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( if( db->mallocFailed ) goto whereBeginError; } } + assert( pWInfo->pTabList!=0 ); if( pWInfo->pOrderBy==0 && (db->flags & SQLITE_ReverseOrder)!=0 ){ - pWInfo->revMask = ALLBITS; + whereReverseScanOrder(pWInfo); } - if( pParse->nErr || NEVER(db->mallocFailed) ){ + if( pParse->nErr ){ goto whereBeginError; } + assert( db->mallocFailed==0 ); #ifdef WHERETRACE_ENABLED if( sqlite3WhereTrace ){ sqlite3DebugPrintf("---- Solution nRow=%d", pWInfo->nRowOut); @@ -140893,89 +165429,48 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( } sqlite3DebugPrintf("\n"); for(ii=0; iinLevel; ii++){ - whereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC); + sqlite3WhereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC); } } #endif - /* Attempt to omit tables from the join that do not affect the result. - ** For a table to not affect the result, the following must be true: + /* Attempt to omit tables from a join that do not affect the result. + ** See the comment on whereOmitNoopJoin() for further information. ** - ** 1) The query must not be an aggregate. - ** 2) The table must be the RHS of a LEFT JOIN. - ** 3) Either the query must be DISTINCT, or else the ON or USING clause - ** must contain a constraint that limits the scan of the table to - ** at most a single row. - ** 4) The table must not be referenced by any part of the query apart - ** from its own USING or ON clause. - ** - ** For example, given: - ** - ** CREATE TABLE t1(ipk INTEGER PRIMARY KEY, v1); - ** CREATE TABLE t2(ipk INTEGER PRIMARY KEY, v2); - ** CREATE TABLE t3(ipk INTEGER PRIMARY KEY, v3); - ** - ** then table t2 can be omitted from the following: - ** - ** SELECT v1, v3 FROM t1 - ** LEFT JOIN t2 USING (t1.ipk=t2.ipk) - ** LEFT JOIN t3 USING (t1.ipk=t3.ipk) - ** - ** or from: - ** - ** SELECT DISTINCT v1, v3 FROM t1 - ** LEFT JOIN t2 - ** LEFT JOIN t3 USING (t1.ipk=t3.ipk) + ** This query optimization is factored out into a separate "no-inline" + ** procedure to keep the sqlite3WhereBegin() procedure from becoming + ** too large. If sqlite3WhereBegin() becomes too large, that prevents + ** some C-compiler optimizers from in-lining the + ** sqlite3WhereCodeOneLoopStart() procedure, and it is important to + ** in-line sqlite3WhereCodeOneLoopStart() for performance reasons. */ notReady = ~(Bitmask)0; if( pWInfo->nLevel>=2 - && pResultSet!=0 /* guarantees condition (1) above */ + && pResultSet!=0 /* these two combine to guarantee */ + && 0==(wctrlFlags & WHERE_AGG_DISTINCT) /* condition (1) above */ && OptimizationEnabled(db, SQLITE_OmitNoopJoin) ){ - int i; - Bitmask tabUsed = sqlite3WhereExprListUsage(pMaskSet, pResultSet); - if( sWLB.pOrderBy ){ - tabUsed |= sqlite3WhereExprListUsage(pMaskSet, sWLB.pOrderBy); - } - for(i=pWInfo->nLevel-1; i>=1; i--){ - WhereTerm *pTerm, *pEnd; - struct SrcList_item *pItem; - pLoop = pWInfo->a[i].pWLoop; - pItem = &pWInfo->pTabList->a[pLoop->iTab]; - if( (pItem->fg.jointype & JT_LEFT)==0 ) continue; - if( (wctrlFlags & WHERE_WANT_DISTINCT)==0 - && (pLoop->wsFlags & WHERE_ONEROW)==0 - ){ - continue; - } - if( (tabUsed & pLoop->maskSelf)!=0 ) continue; - pEnd = sWLB.pWC->a + sWLB.pWC->nTerm; - for(pTerm=sWLB.pWC->a; pTermprereqAll & pLoop->maskSelf)!=0 ){ - if( !ExprHasProperty(pTerm->pExpr, EP_FromJoin) - || pTerm->pExpr->iRightJoinTable!=pItem->iCursor - ){ - break; - } - } - } - if( pTerm drop loop %c not used\n", pLoop->cId)); - notReady &= ~pLoop->maskSelf; - for(pTerm=sWLB.pWC->a; pTermprereqAll & pLoop->maskSelf)!=0 ){ - pTerm->wtFlags |= TERM_CODED; - } - } - if( i!=pWInfo->nLevel-1 ){ - int nByte = (pWInfo->nLevel-1-i) * sizeof(WhereLevel); - memmove(&pWInfo->a[i], &pWInfo->a[i+1], nByte); - } - pWInfo->nLevel--; - nTabList--; - } + notReady = whereOmitNoopJoin(pWInfo, notReady); + nTabList = pWInfo->nLevel; + assert( nTabList>0 ); } - WHERETRACE(0xffff,("*** Optimizer Finished ***\n")); + + /* Check to see if there are any SEARCH loops that might benefit from + ** using a Bloom filter. + */ + if( pWInfo->nLevel>=2 + && OptimizationEnabled(db, SQLITE_BloomFilter) + ){ + whereCheckIfBloomFilterIsUseful(pWInfo); + } + +#if defined(WHERETRACE_ENABLED) + if( sqlite3WhereTrace & 0x4000 ){ /* Display all terms of the WHERE clause */ + sqlite3DebugPrintf("---- WHERE clause at end of analysis:\n"); + sqlite3WhereClausePrint(sWLB.pWC); + } + WHERETRACE(0xffffffff,("*** Optimizer Finished ***\n")); +#endif pWInfo->pParse->nQueryLoop += pWInfo->nRowOut; /* If the caller is an UPDATE or DELETE statement that is requesting @@ -141001,10 +165496,12 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( if( (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 ){ int wsFlags = pWInfo->a[0].pWLoop->wsFlags; int bOnerow = (wsFlags & WHERE_ONEROW)!=0; + assert( !(wsFlags & WHERE_VIRTUALTABLE) || IsVirtual(pTabList->a[0].pTab) ); if( bOnerow || ( 0!=(wctrlFlags & WHERE_ONEPASS_MULTIROW) - && 0==(wsFlags & WHERE_VIRTUALTABLE) + && !IsVirtual(pTabList->a[0].pTab) && (0==(wsFlags & WHERE_MULTI_OR) || (wctrlFlags & WHERE_DUPLICATES_OK)) + && OptimizationEnabled(db, SQLITE_OnePass) )){ pWInfo->eOnePass = bOnerow ? ONEPASS_SINGLE : ONEPASS_MULTI; if( HasRowid(pTabList->a[0].pTab) && (wsFlags & WHERE_IDX_ONLY) ){ @@ -141022,13 +165519,13 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( for(ii=0, pLevel=pWInfo->a; iia[pLevel->iFrom]; pTab = pTabItem->pTab; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); pLoop = pLevel->pWLoop; - if( (pTab->tabFlags & TF_Ephemeral)!=0 || pTab->pSelect ){ + if( (pTab->tabFlags & TF_Ephemeral)!=0 || IsView(pTab) ){ /* Do nothing */ }else #ifndef SQLITE_OMIT_VIRTUALTABLE @@ -141040,8 +165537,10 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* noop */ }else #endif - if( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 - && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 ){ + if( ((pLoop->wsFlags & WHERE_IDX_ONLY)==0 + && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0) + || (pTabItem->fg.jointype & (JT_LTORJ|JT_RIGHT))!=0 + ){ int op = OP_OpenRead; if( pWInfo->eOnePass!=ONEPASS_OFF ){ op = OP_OpenWrite; @@ -141051,7 +165550,14 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( assert( pTabItem->iCursor==pLevel->iTabCur ); testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS-1 ); testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS ); - if( pWInfo->eOnePass==ONEPASS_OFF && pTab->nColeOnePass==ONEPASS_OFF + && pTab->nColtabFlags & (TF_HasGenerated|TF_WithoutRowid))==0 + && (pLoop->wsFlags & (WHERE_AUTO_INDEX|WHERE_BLOOMFILTER))==0 + ){ + /* If we know that only a prefix of the record will be used, + ** it is advantageous to reduce the "column count" field in + ** the P4 operand of the OP_OpenRead/Write opcode. */ Bitmask b = pTabItem->colUsed; int n = 0; for(; b; b=b>>1, n++){} @@ -141059,7 +165565,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( assert( n<=pTab->nCol ); } #ifdef SQLITE_ENABLE_CURSOR_HINTS - if( pLoop->u.btree.pIndex!=0 ){ + if( pLoop->u.btree.pIndex!=0 && (pTab->tabFlags & TF_WithoutRowid)==0 ){ sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ|bFordelete); }else #endif @@ -141101,8 +165607,12 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( op = OP_ReopenIdx; }else{ iIndexCur = pParse->nTab++; + if( pIx->bHasExpr && OptimizationEnabled(db, SQLITE_IndexedExpr) ){ + whereAddIndexedExpr(pParse, pIx, iIndexCur, pTabItem); + } } pLevel->iIdxCur = iIndexCur; + assert( pIx!=0 ); assert( pIx->pSchema==pTab->pSchema ); assert( iIndexCur>=0 ); if( op ){ @@ -141110,10 +165620,12 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( sqlite3VdbeSetP4KeyInfo(pParse, pIx); if( (pLoop->wsFlags & WHERE_CONSTRAINT)!=0 && (pLoop->wsFlags & (WHERE_COLUMN_RANGE|WHERE_SKIPSCAN))==0 + && (pLoop->wsFlags & WHERE_BIGNULL_SORT)==0 + && (pLoop->wsFlags & WHERE_IN_SEEKSCAN)==0 && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0 && pWInfo->eDistinct!=WHERE_DISTINCT_ORDERED ){ - sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */ + sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); } VdbeComment((v, "%s", pIx->zName)); #ifdef SQLITE_ENABLE_COLUMN_USED_MASK @@ -141134,6 +165646,37 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( } } if( iDb>=0 ) sqlite3CodeVerifySchema(pParse, iDb); + if( (pTabItem->fg.jointype & JT_RIGHT)!=0 + && (pLevel->pRJ = sqlite3WhereMalloc(pWInfo, sizeof(WhereRightJoin)))!=0 + ){ + WhereRightJoin *pRJ = pLevel->pRJ; + pRJ->iMatch = pParse->nTab++; + pRJ->regBloom = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Blob, 65536, pRJ->regBloom); + pRJ->regReturn = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Null, 0, pRJ->regReturn); + assert( pTab==pTabItem->pTab ); + if( HasRowid(pTab) ){ + KeyInfo *pInfo; + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pRJ->iMatch, 1); + pInfo = sqlite3KeyInfoAlloc(pParse->db, 1, 0); + if( pInfo ){ + pInfo->aColl[0] = 0; + pInfo->aSortFlags[0] = 0; + sqlite3VdbeAppendP4(v, pInfo, P4_KEYINFO); + } + }else{ + Index *pPk = sqlite3PrimaryKeyIndex(pTab); + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pRJ->iMatch, pPk->nKeyCol); + sqlite3VdbeSetP4KeyInfo(pParse, pPk); + } + pLoop->wsFlags &= ~WHERE_IDX_ONLY; + /* The nature of RIGHT JOIN processing is such that it messes up + ** the output order. So omit any ORDER BY/GROUP BY elimination + ** optimizations. We need to do an actual sort for RIGHT JOIN. */ + pWInfo->nOBSat = 0; + pWInfo->eDistinct = WHERE_DISTINCT_UNORDERED; + } } pWInfo->iTop = sqlite3VdbeCurrentAddr(v); if( db->mallocFailed ) goto whereBeginError; @@ -141145,20 +165688,36 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( for(ii=0; iinErr ) goto whereBeginError; pLevel = &pWInfo->a[ii]; wsFlags = pLevel->pWLoop->wsFlags; + pSrc = &pTabList->a[pLevel->iFrom]; + if( pSrc->fg.isMaterialized ){ + if( pSrc->fg.isCorrelated ){ + sqlite3VdbeAddOp2(v, OP_Gosub, pSrc->regReturn, pSrc->addrFillSub); + }else{ + int iOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + sqlite3VdbeAddOp2(v, OP_Gosub, pSrc->regReturn, pSrc->addrFillSub); + sqlite3VdbeJumpHere(v, iOnce); + } + } + assert( pTabList == pWInfo->pTabList ); + if( (wsFlags & (WHERE_AUTO_INDEX|WHERE_BLOOMFILTER))!=0 ){ + if( (wsFlags & WHERE_AUTO_INDEX)!=0 ){ #ifndef SQLITE_OMIT_AUTOMATIC_INDEX - if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){ - constructAutomaticIndex(pParse, &pWInfo->sWC, - &pTabList->a[pLevel->iFrom], notReady, pLevel); + constructAutomaticIndex(pParse, &pWInfo->sWC, notReady, pLevel); +#endif + }else{ + sqlite3ConstructBloomFilter(pWInfo, ii, pLevel, notReady); + } if( db->mallocFailed ) goto whereBeginError; } -#endif addrExplain = sqlite3WhereExplainOneScan( pParse, pTabList, pLevel, wctrlFlags ); pLevel->addrBody = sqlite3VdbeCurrentAddr(v); - notReady = sqlite3WhereCodeOneLoopStart(pWInfo, ii, notReady); + notReady = sqlite3WhereCodeOneLoopStart(pParse,v,pWInfo,ii,pLevel,notReady); pWInfo->iContinue = pLevel->addrCont; if( (wsFlags&WHERE_MULTI_OR)==0 && (wctrlFlags&WHERE_OR_SUBCLAUSE)==0 ){ sqlite3WhereAddScanStatus(v, pTabList, pLevel, addrExplain); @@ -141167,6 +165726,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* Done. */ VdbeModuleComment((v, "Begin WHERE-core")); + pWInfo->iEndWhere = sqlite3VdbeCurrentAddr(v); return pWInfo; /* Jump here if malloc fails */ @@ -141179,7 +165739,47 @@ whereBeginError: } /* -** Generate the end of the WHERE loop. See comments on +** Part of sqlite3WhereEnd() will rewrite opcodes to reference the +** index rather than the main table. In SQLITE_DEBUG mode, we want +** to trace those changes if PRAGMA vdbe_addoptrace=on. This routine +** does that. +*/ +#ifndef SQLITE_DEBUG +# define OpcodeRewriteTrace(D,K,P) /* no-op */ +#else +# define OpcodeRewriteTrace(D,K,P) sqlite3WhereOpcodeRewriteTrace(D,K,P) + static void sqlite3WhereOpcodeRewriteTrace( + sqlite3 *db, + int pc, + VdbeOp *pOp + ){ + if( (db->flags & SQLITE_VdbeAddopTrace)==0 ) return; + sqlite3VdbePrintOp(0, pc, pOp); + } +#endif + +#ifdef SQLITE_DEBUG +/* +** Return true if cursor iCur is opened by instruction k of the +** bytecode. Used inside of assert() only. +*/ +static int cursorIsOpen(Vdbe *v, int iCur, int k){ + while( k>=0 ){ + VdbeOp *pOp = sqlite3VdbeGetOp(v,k--); + if( pOp->p1!=iCur ) continue; + if( pOp->opcode==OP_Close ) return 0; + if( pOp->opcode==OP_OpenRead ) return 1; + if( pOp->opcode==OP_OpenWrite ) return 1; + if( pOp->opcode==OP_OpenDup ) return 1; + if( pOp->opcode==OP_OpenAutoindex ) return 1; + if( pOp->opcode==OP_OpenEphemeral ) return 1; + } + return 0; +} +#endif /* SQLITE_DEBUG */ + +/* +** Generate the end of the WHERE loop. See comments on ** sqlite3WhereBegin() for additional information. */ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ @@ -141190,14 +165790,26 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ WhereLoop *pLoop; SrcList *pTabList = pWInfo->pTabList; sqlite3 *db = pParse->db; + int iEnd = sqlite3VdbeCurrentAddr(v); + int nRJ = 0; /* Generate loop termination code. */ VdbeModuleComment((v, "End WHERE-core")); - sqlite3ExprCacheClear(pParse); for(i=pWInfo->nLevel-1; i>=0; i--){ int addr; pLevel = &pWInfo->a[i]; + if( pLevel->pRJ ){ + /* Terminate the subroutine that forms the interior of the loop of + ** the RIGHT JOIN table */ + WhereRightJoin *pRJ = pLevel->pRJ; + sqlite3VdbeResolveLabel(v, pLevel->addrCont); + pLevel->addrCont = 0; + pRJ->endSubrtn = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp3(v, OP_Return, pRJ->regReturn, pRJ->addrSubrtn, 1); + VdbeCoverage(v); + nRJ++; + } pLoop = pLevel->pWLoop; if( pLevel->op!=OP_Noop ){ #ifndef SQLITE_DISABLE_SKIPAHEAD_DISTINCT @@ -141208,7 +165820,7 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ && i==pWInfo->nLevel-1 /* Ticket [ef9318757b152e3] 2017-10-21 */ && (pLoop->wsFlags & WHERE_INDEXED)!=0 && (pIdx = pLoop->u.btree.pIndex)->hasStat1 - && (n = pLoop->u.btree.nIdxCol)>0 + && (n = pLoop->u.btree.nDistinctCol)>0 && pIdx->aiRowLogEst[n]>=36 ){ int r1 = pParse->nMem+1; @@ -141225,35 +165837,75 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ } #endif /* SQLITE_DISABLE_SKIPAHEAD_DISTINCT */ /* The common case: Advance to the next row */ - sqlite3VdbeResolveLabel(v, pLevel->addrCont); + if( pLevel->addrCont ) sqlite3VdbeResolveLabel(v, pLevel->addrCont); sqlite3VdbeAddOp3(v, pLevel->op, pLevel->p1, pLevel->p2, pLevel->p3); sqlite3VdbeChangeP5(v, pLevel->p5); VdbeCoverage(v); VdbeCoverageIf(v, pLevel->op==OP_Next); VdbeCoverageIf(v, pLevel->op==OP_Prev); VdbeCoverageIf(v, pLevel->op==OP_VNext); + if( pLevel->regBignull ){ + sqlite3VdbeResolveLabel(v, pLevel->addrBignull); + sqlite3VdbeAddOp2(v, OP_DecrJumpZero, pLevel->regBignull, pLevel->p2-1); + VdbeCoverage(v); + } #ifndef SQLITE_DISABLE_SKIPAHEAD_DISTINCT if( addrSeek ) sqlite3VdbeJumpHere(v, addrSeek); #endif - }else{ + }else if( pLevel->addrCont ){ sqlite3VdbeResolveLabel(v, pLevel->addrCont); } - if( pLoop->wsFlags & WHERE_IN_ABLE && pLevel->u.in.nIn>0 ){ + if( (pLoop->wsFlags & WHERE_IN_ABLE)!=0 && pLevel->u.in.nIn>0 ){ struct InLoop *pIn; int j; sqlite3VdbeResolveLabel(v, pLevel->addrNxt); for(j=pLevel->u.in.nIn, pIn=&pLevel->u.in.aInLoop[j-1]; j>0; j--, pIn--){ + assert( sqlite3VdbeGetOp(v, pIn->addrInTop+1)->opcode==OP_IsNull + || pParse->db->mallocFailed ); sqlite3VdbeJumpHere(v, pIn->addrInTop+1); if( pIn->eEndLoopOp!=OP_Noop ){ + if( pIn->nPrefix ){ + int bEarlyOut = + (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 + && (pLoop->wsFlags & WHERE_IN_EARLYOUT)!=0; + if( pLevel->iLeftJoin ){ + /* For LEFT JOIN queries, cursor pIn->iCur may not have been + ** opened yet. This occurs for WHERE clauses such as + ** "a = ? AND b IN (...)", where the index is on (a, b). If + ** the RHS of the (a=?) is NULL, then the "b IN (...)" may + ** never have been coded, but the body of the loop run to + ** return the null-row. So, if the cursor is not open yet, + ** jump over the OP_Next or OP_Prev instruction about to + ** be coded. */ + sqlite3VdbeAddOp2(v, OP_IfNotOpen, pIn->iCur, + sqlite3VdbeCurrentAddr(v) + 2 + bEarlyOut); + VdbeCoverage(v); + } + if( bEarlyOut ){ + sqlite3VdbeAddOp4Int(v, OP_IfNoHope, pLevel->iIdxCur, + sqlite3VdbeCurrentAddr(v)+2, + pIn->iBase, pIn->nPrefix); + VdbeCoverage(v); + /* Retarget the OP_IsNull against the left operand of IN so + ** it jumps past the OP_IfNoHope. This is because the + ** OP_IsNull also bypasses the OP_Affinity opcode that is + ** required by OP_IfNoHope. */ + sqlite3VdbeJumpHere(v, pIn->addrInTop+1); + } + } sqlite3VdbeAddOp2(v, pIn->eEndLoopOp, pIn->iCur, pIn->addrInTop); VdbeCoverage(v); - VdbeCoverageIf(v, pIn->eEndLoopOp==OP_PrevIfOpen); - VdbeCoverageIf(v, pIn->eEndLoopOp==OP_NextIfOpen); + VdbeCoverageIf(v, pIn->eEndLoopOp==OP_Prev); + VdbeCoverageIf(v, pIn->eEndLoopOp==OP_Next); } sqlite3VdbeJumpHere(v, pIn->addrInTop-1); } } sqlite3VdbeResolveLabel(v, pLevel->addrBrk); + if( pLevel->pRJ ){ + sqlite3VdbeAddOp3(v, OP_Return, pLevel->pRJ->regReturn, 0, 1); + VdbeCoverage(v); + } if( pLevel->addrSkip ){ sqlite3VdbeGoto(v, pLevel->addrSkip); VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName)); @@ -141275,9 +165927,15 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ assert( pLevel->iTabCur==pTabList->a[pLevel->iFrom].iCursor ); sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iTabCur); } - if( (ws & WHERE_INDEXED) - || ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx) + if( (ws & WHERE_INDEXED) + || ((ws & WHERE_MULTI_OR) && pLevel->u.pCoveringIdx) ){ + if( ws & WHERE_MULTI_OR ){ + Index *pIx = pLevel->u.pCoveringIdx; + int iDb = sqlite3SchemaToIndex(db, pIx->pSchema); + sqlite3VdbeAddOp3(v, OP_ReopenIdx, pLevel->iIdxCur, pIx->tnum, iDb); + sqlite3VdbeSetP4KeyInfo(pParse, pIx); + } sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur); } if( pLevel->op==OP_Return ){ @@ -141291,21 +165949,25 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ pWInfo->pTabList->a[pLevel->iFrom].pTab->zName)); } - /* The "break" point is here, just past the end of the outer loop. - ** Set it. - */ - sqlite3VdbeResolveLabel(v, pWInfo->iBreak); - assert( pWInfo->nLevel<=pTabList->nSrc ); for(i=0, pLevel=pWInfo->a; inLevel; i++, pLevel++){ int k, last; - VdbeOp *pOp; + VdbeOp *pOp, *pLastOp; Index *pIdx = 0; - struct SrcList_item *pTabItem = &pTabList->a[pLevel->iFrom]; + SrcItem *pTabItem = &pTabList->a[pLevel->iFrom]; Table *pTab = pTabItem->pTab; assert( pTab!=0 ); pLoop = pLevel->pWLoop; + /* Do RIGHT JOIN processing. Generate code that will output the + ** unmatched rows of the right operand of the RIGHT JOIN with + ** all of the columns of the left operand set to NULL. + */ + if( pLevel->pRJ ){ + sqlite3WhereRightJoinLoop(pWInfo, i, pLevel); + continue; + } + /* For a co-routine, change all OP_Column references to the table of ** the co-routine into OP_Copy of result contained in a register. ** OP_Rowid becomes OP_Null. @@ -141321,7 +165983,7 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ ** from the index instead of from the table where possible. In some cases ** this optimization prevents the table from ever being read, which can ** yield a significant performance boost. - ** + ** ** Calls to the code generator in between sqlite3WhereBegin and ** sqlite3WhereEnd will have created code that references the table ** directly. This loop scans all that code looking for opcodes @@ -141331,57 +165993,127 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ if( pLoop->wsFlags & (WHERE_INDEXED|WHERE_IDX_ONLY) ){ pIdx = pLoop->u.btree.pIndex; }else if( pLoop->wsFlags & WHERE_MULTI_OR ){ - pIdx = pLevel->u.pCovidx; + pIdx = pLevel->u.pCoveringIdx; } if( pIdx - && (pWInfo->eOnePass==ONEPASS_OFF || !HasRowid(pIdx->pTable)) && !db->mallocFailed ){ - last = sqlite3VdbeCurrentAddr(v); - k = pLevel->addrBody; + if( pWInfo->eOnePass==ONEPASS_OFF || !HasRowid(pIdx->pTable) ){ + last = iEnd; + }else{ + last = pWInfo->iEndWhere; + } + if( pIdx->bHasExpr ){ + IndexedExpr *p = pParse->pIdxEpr; + while( p ){ + if( p->iIdxCur==pLevel->iIdxCur ){ +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace & 0x200 ){ + sqlite3DebugPrintf("Disable pParse->pIdxEpr term {%d,%d}\n", + p->iIdxCur, p->iIdxCol); + if( sqlite3WhereTrace & 0x5000 ) sqlite3ShowExpr(p->pExpr); + } +#endif + p->iDataCur = -1; + p->iIdxCur = -1; + } + p = p->pIENext; + } + } + k = pLevel->addrBody + 1; +#ifdef SQLITE_DEBUG + if( db->flags & SQLITE_VdbeAddopTrace ){ + printf("TRANSLATE cursor %d->%d in opcode range %d..%d\n", + pLevel->iTabCur, pLevel->iIdxCur, k, last-1); + } + /* Proof that the "+1" on the k value above is safe */ + pOp = sqlite3VdbeGetOp(v, k - 1); + assert( pOp->opcode!=OP_Column || pOp->p1!=pLevel->iTabCur ); + assert( pOp->opcode!=OP_Rowid || pOp->p1!=pLevel->iTabCur ); + assert( pOp->opcode!=OP_IfNullRow || pOp->p1!=pLevel->iTabCur ); +#endif pOp = sqlite3VdbeGetOp(v, k); - for(; kp1!=pLevel->iTabCur ) continue; - if( pOp->opcode==OP_Column + pLastOp = pOp + (last - k); + assert( pOp<=pLastOp ); + do{ + if( pOp->p1!=pLevel->iTabCur ){ + /* no-op */ + }else if( pOp->opcode==OP_Column #ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC || pOp->opcode==OP_Offset #endif ){ int x = pOp->p2; assert( pIdx->pTable==pTab ); +#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC + if( pOp->opcode==OP_Offset ){ + /* Do not need to translate the column number */ + }else +#endif if( !HasRowid(pTab) ){ Index *pPk = sqlite3PrimaryKeyIndex(pTab); x = pPk->aiColumn[x]; assert( x>=0 ); + }else{ + testcase( x!=sqlite3StorageColumnToTable(pTab,x) ); + x = sqlite3StorageColumnToTable(pTab,x); } - x = sqlite3ColumnOfIndex(pIdx, x); + x = sqlite3TableColumnToIndex(pIdx, x); if( x>=0 ){ pOp->p2 = x; pOp->p1 = pLevel->iIdxCur; + OpcodeRewriteTrace(db, k, pOp); + }else{ + /* Unable to translate the table reference into an index + ** reference. Verify that this is harmless - that the + ** table being referenced really is open. + */ +#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC + assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 + || cursorIsOpen(v,pOp->p1,k) + || pOp->opcode==OP_Offset + ); +#else + assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 + || cursorIsOpen(v,pOp->p1,k) + ); +#endif } - assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 || x>=0 - || pWInfo->eOnePass ); }else if( pOp->opcode==OP_Rowid ){ pOp->p1 = pLevel->iIdxCur; pOp->opcode = OP_IdxRowid; + OpcodeRewriteTrace(db, k, pOp); }else if( pOp->opcode==OP_IfNullRow ){ pOp->p1 = pLevel->iIdxCur; + OpcodeRewriteTrace(db, k, pOp); } - } +#ifdef SQLITE_DEBUG + k++; +#endif + }while( (++pOp)flags & SQLITE_VdbeAddopTrace ) printf("TRANSLATE complete\n"); +#endif } } + /* The "break" point is here, just past the end of the outer loop. + ** Set it. + */ + sqlite3VdbeResolveLabel(v, pWInfo->iBreak); + /* Final cleanup */ pParse->nQueryLoop = pWInfo->savedNQueryLoop; whereInfoFree(db, pWInfo); + pParse->withinRJSubrtn -= nRJ; return; } /************** End of where.c ***********************************************/ -/************** Begin file parse.c *******************************************/ +/************** Begin file window.c ******************************************/ /* -** 2000-05-29 +** 2018 May 08 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -141391,21 +166123,3122 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** Driver template for the LEMON parser generator. -** -** The "lemon" program processes an LALR(1) input grammar file, then uses -** this template to construct a parser. The "lemon" program inserts text -** at each "%%" line. Also, any "P-a-r-s-e" identifer prefix (without the -** interstitial "-" characters) contained in this template is changed into -** the value of the %name directive from the grammar. Otherwise, the content -** of this template is copied straight through into the generate parser -** source file. -** -** The following is the concatenation of all %include directives from the -** input grammar file: */ -/* #include */ -/************ Begin %include sections from the grammar ************************/ +/* #include "sqliteInt.h" */ + +#ifndef SQLITE_OMIT_WINDOWFUNC + +/* +** SELECT REWRITING +** +** Any SELECT statement that contains one or more window functions in +** either the select list or ORDER BY clause (the only two places window +** functions may be used) is transformed by function sqlite3WindowRewrite() +** in order to support window function processing. For example, with the +** schema: +** +** CREATE TABLE t1(a, b, c, d, e, f, g); +** +** the statement: +** +** SELECT a+1, max(b) OVER (PARTITION BY c ORDER BY d) FROM t1 ORDER BY e; +** +** is transformed to: +** +** SELECT a+1, max(b) OVER (PARTITION BY c ORDER BY d) FROM ( +** SELECT a, e, c, d, b FROM t1 ORDER BY c, d +** ) ORDER BY e; +** +** The flattening optimization is disabled when processing this transformed +** SELECT statement. This allows the implementation of the window function +** (in this case max()) to process rows sorted in order of (c, d), which +** makes things easier for obvious reasons. More generally: +** +** * FROM, WHERE, GROUP BY and HAVING clauses are all moved to +** the sub-query. +** +** * ORDER BY, LIMIT and OFFSET remain part of the parent query. +** +** * Terminals from each of the expression trees that make up the +** select-list and ORDER BY expressions in the parent query are +** selected by the sub-query. For the purposes of the transformation, +** terminals are column references and aggregate functions. +** +** If there is more than one window function in the SELECT that uses +** the same window declaration (the OVER bit), then a single scan may +** be used to process more than one window function. For example: +** +** SELECT max(b) OVER (PARTITION BY c ORDER BY d), +** min(e) OVER (PARTITION BY c ORDER BY d) +** FROM t1; +** +** is transformed in the same way as the example above. However: +** +** SELECT max(b) OVER (PARTITION BY c ORDER BY d), +** min(e) OVER (PARTITION BY a ORDER BY b) +** FROM t1; +** +** Must be transformed to: +** +** SELECT max(b) OVER (PARTITION BY c ORDER BY d) FROM ( +** SELECT e, min(e) OVER (PARTITION BY a ORDER BY b), c, d, b FROM +** SELECT a, e, c, d, b FROM t1 ORDER BY a, b +** ) ORDER BY c, d +** ) ORDER BY e; +** +** so that both min() and max() may process rows in the order defined by +** their respective window declarations. +** +** INTERFACE WITH SELECT.C +** +** When processing the rewritten SELECT statement, code in select.c calls +** sqlite3WhereBegin() to begin iterating through the results of the +** sub-query, which is always implemented as a co-routine. It then calls +** sqlite3WindowCodeStep() to process rows and finish the scan by calling +** sqlite3WhereEnd(). +** +** sqlite3WindowCodeStep() generates VM code so that, for each row returned +** by the sub-query a sub-routine (OP_Gosub) coded by select.c is invoked. +** When the sub-routine is invoked: +** +** * The results of all window-functions for the row are stored +** in the associated Window.regResult registers. +** +** * The required terminal values are stored in the current row of +** temp table Window.iEphCsr. +** +** In some cases, depending on the window frame and the specific window +** functions invoked, sqlite3WindowCodeStep() caches each entire partition +** in a temp table before returning any rows. In other cases it does not. +** This detail is encapsulated within this file, the code generated by +** select.c is the same in either case. +** +** BUILT-IN WINDOW FUNCTIONS +** +** This implementation features the following built-in window functions: +** +** row_number() +** rank() +** dense_rank() +** percent_rank() +** cume_dist() +** ntile(N) +** lead(expr [, offset [, default]]) +** lag(expr [, offset [, default]]) +** first_value(expr) +** last_value(expr) +** nth_value(expr, N) +** +** These are the same built-in window functions supported by Postgres. +** Although the behaviour of aggregate window functions (functions that +** can be used as either aggregates or window functions) allows them to +** be implemented using an API, built-in window functions are much more +** esoteric. Additionally, some window functions (e.g. nth_value()) +** may only be implemented by caching the entire partition in memory. +** As such, some built-in window functions use the same API as aggregate +** window functions and some are implemented directly using VDBE +** instructions. Additionally, for those functions that use the API, the +** window frame is sometimes modified before the SELECT statement is +** rewritten. For example, regardless of the specified window frame, the +** row_number() function always uses: +** +** ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW +** +** See sqlite3WindowUpdate() for details. +** +** As well as some of the built-in window functions, aggregate window +** functions min() and max() are implemented using VDBE instructions if +** the start of the window frame is declared as anything other than +** UNBOUNDED PRECEDING. +*/ + +/* +** Implementation of built-in window function row_number(). Assumes that the +** window frame has been coerced to: +** +** ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW +*/ +static void row_numberStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + i64 *p = (i64*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ) (*p)++; + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); +} +static void row_numberValueFunc(sqlite3_context *pCtx){ + i64 *p = (i64*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + sqlite3_result_int64(pCtx, (p ? *p : 0)); +} + +/* +** Context object type used by rank(), dense_rank(), percent_rank() and +** cume_dist(). +*/ +struct CallCount { + i64 nValue; + i64 nStep; + i64 nTotal; +}; + +/* +** Implementation of built-in window function dense_rank(). Assumes that +** the window frame has been set to: +** +** RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW +*/ +static void dense_rankStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ) p->nStep = 1; + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); +} +static void dense_rankValueFunc(sqlite3_context *pCtx){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + if( p->nStep ){ + p->nValue++; + p->nStep = 0; + } + sqlite3_result_int64(pCtx, p->nValue); + } +} + +/* +** Implementation of built-in window function nth_value(). This +** implementation is used in "slow mode" only - when the EXCLUDE clause +** is not set to the default value "NO OTHERS". +*/ +struct NthValueCtx { + i64 nStep; + sqlite3_value *pValue; +}; +static void nth_valueStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct NthValueCtx *p; + p = (struct NthValueCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + i64 iVal; + switch( sqlite3_value_numeric_type(apArg[1]) ){ + case SQLITE_INTEGER: + iVal = sqlite3_value_int64(apArg[1]); + break; + case SQLITE_FLOAT: { + double fVal = sqlite3_value_double(apArg[1]); + if( ((i64)fVal)!=fVal ) goto error_out; + iVal = (i64)fVal; + break; + } + default: + goto error_out; + } + if( iVal<=0 ) goto error_out; + + p->nStep++; + if( iVal==p->nStep ){ + p->pValue = sqlite3_value_dup(apArg[0]); + if( !p->pValue ){ + sqlite3_result_error_nomem(pCtx); + } + } + } + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); + return; + + error_out: + sqlite3_result_error( + pCtx, "second argument to nth_value must be a positive integer", -1 + ); +} +static void nth_valueFinalizeFunc(sqlite3_context *pCtx){ + struct NthValueCtx *p; + p = (struct NthValueCtx*)sqlite3_aggregate_context(pCtx, 0); + if( p && p->pValue ){ + sqlite3_result_value(pCtx, p->pValue); + sqlite3_value_free(p->pValue); + p->pValue = 0; + } +} +#define nth_valueInvFunc noopStepFunc +#define nth_valueValueFunc noopValueFunc + +static void first_valueStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct NthValueCtx *p; + p = (struct NthValueCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p && p->pValue==0 ){ + p->pValue = sqlite3_value_dup(apArg[0]); + if( !p->pValue ){ + sqlite3_result_error_nomem(pCtx); + } + } + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); +} +static void first_valueFinalizeFunc(sqlite3_context *pCtx){ + struct NthValueCtx *p; + p = (struct NthValueCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p && p->pValue ){ + sqlite3_result_value(pCtx, p->pValue); + sqlite3_value_free(p->pValue); + p->pValue = 0; + } +} +#define first_valueInvFunc noopStepFunc +#define first_valueValueFunc noopValueFunc + +/* +** Implementation of built-in window function rank(). Assumes that +** the window frame has been set to: +** +** RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW +*/ +static void rankStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + p->nStep++; + if( p->nValue==0 ){ + p->nValue = p->nStep; + } + } + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); +} +static void rankValueFunc(sqlite3_context *pCtx){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + sqlite3_result_int64(pCtx, p->nValue); + p->nValue = 0; + } +} + +/* +** Implementation of built-in window function percent_rank(). Assumes that +** the window frame has been set to: +** +** GROUPS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING +*/ +static void percent_rankStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + UNUSED_PARAMETER(nArg); assert( nArg==0 ); + UNUSED_PARAMETER(apArg); + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + p->nTotal++; + } +} +static void percent_rankInvFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + UNUSED_PARAMETER(nArg); assert( nArg==0 ); + UNUSED_PARAMETER(apArg); + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + p->nStep++; +} +static void percent_rankValueFunc(sqlite3_context *pCtx){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + p->nValue = p->nStep; + if( p->nTotal>1 ){ + double r = (double)p->nValue / (double)(p->nTotal-1); + sqlite3_result_double(pCtx, r); + }else{ + sqlite3_result_double(pCtx, 0.0); + } + } +} +#define percent_rankFinalizeFunc percent_rankValueFunc + +/* +** Implementation of built-in window function cume_dist(). Assumes that +** the window frame has been set to: +** +** GROUPS BETWEEN 1 FOLLOWING AND UNBOUNDED FOLLOWING +*/ +static void cume_distStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + UNUSED_PARAMETER(nArg); assert( nArg==0 ); + UNUSED_PARAMETER(apArg); + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + p->nTotal++; + } +} +static void cume_distInvFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct CallCount *p; + UNUSED_PARAMETER(nArg); assert( nArg==0 ); + UNUSED_PARAMETER(apArg); + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + p->nStep++; +} +static void cume_distValueFunc(sqlite3_context *pCtx){ + struct CallCount *p; + p = (struct CallCount*)sqlite3_aggregate_context(pCtx, 0); + if( p ){ + double r = (double)(p->nStep) / (double)(p->nTotal); + sqlite3_result_double(pCtx, r); + } +} +#define cume_distFinalizeFunc cume_distValueFunc + +/* +** Context object for ntile() window function. +*/ +struct NtileCtx { + i64 nTotal; /* Total rows in partition */ + i64 nParam; /* Parameter passed to ntile(N) */ + i64 iRow; /* Current row */ +}; + +/* +** Implementation of ntile(). This assumes that the window frame has +** been coerced to: +** +** ROWS CURRENT ROW AND UNBOUNDED FOLLOWING +*/ +static void ntileStepFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct NtileCtx *p; + assert( nArg==1 ); UNUSED_PARAMETER(nArg); + p = (struct NtileCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p ){ + if( p->nTotal==0 ){ + p->nParam = sqlite3_value_int64(apArg[0]); + if( p->nParam<=0 ){ + sqlite3_result_error( + pCtx, "argument of ntile must be a positive integer", -1 + ); + } + } + p->nTotal++; + } +} +static void ntileInvFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct NtileCtx *p; + assert( nArg==1 ); UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); + p = (struct NtileCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + p->iRow++; +} +static void ntileValueFunc(sqlite3_context *pCtx){ + struct NtileCtx *p; + p = (struct NtileCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p && p->nParam>0 ){ + int nSize = (p->nTotal / p->nParam); + if( nSize==0 ){ + sqlite3_result_int64(pCtx, p->iRow+1); + }else{ + i64 nLarge = p->nTotal - p->nParam*nSize; + i64 iSmall = nLarge*(nSize+1); + i64 iRow = p->iRow; + + assert( (nLarge*(nSize+1) + (p->nParam-nLarge)*nSize)==p->nTotal ); + + if( iRowpVal); + p->pVal = sqlite3_value_dup(apArg[0]); + if( p->pVal==0 ){ + sqlite3_result_error_nomem(pCtx); + }else{ + p->nVal++; + } + } +} +static void last_valueInvFunc( + sqlite3_context *pCtx, + int nArg, + sqlite3_value **apArg +){ + struct LastValueCtx *p; + UNUSED_PARAMETER(nArg); + UNUSED_PARAMETER(apArg); + p = (struct LastValueCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( ALWAYS(p) ){ + p->nVal--; + if( p->nVal==0 ){ + sqlite3_value_free(p->pVal); + p->pVal = 0; + } + } +} +static void last_valueValueFunc(sqlite3_context *pCtx){ + struct LastValueCtx *p; + p = (struct LastValueCtx*)sqlite3_aggregate_context(pCtx, 0); + if( p && p->pVal ){ + sqlite3_result_value(pCtx, p->pVal); + } +} +static void last_valueFinalizeFunc(sqlite3_context *pCtx){ + struct LastValueCtx *p; + p = (struct LastValueCtx*)sqlite3_aggregate_context(pCtx, sizeof(*p)); + if( p && p->pVal ){ + sqlite3_result_value(pCtx, p->pVal); + sqlite3_value_free(p->pVal); + p->pVal = 0; + } +} + +/* +** Static names for the built-in window function names. These static +** names are used, rather than string literals, so that FuncDef objects +** can be associated with a particular window function by direct +** comparison of the zName pointer. Example: +** +** if( pFuncDef->zName==row_valueName ){ ... } +*/ +static const char row_numberName[] = "row_number"; +static const char dense_rankName[] = "dense_rank"; +static const char rankName[] = "rank"; +static const char percent_rankName[] = "percent_rank"; +static const char cume_distName[] = "cume_dist"; +static const char ntileName[] = "ntile"; +static const char last_valueName[] = "last_value"; +static const char nth_valueName[] = "nth_value"; +static const char first_valueName[] = "first_value"; +static const char leadName[] = "lead"; +static const char lagName[] = "lag"; + +/* +** No-op implementations of xStep() and xFinalize(). Used as place-holders +** for built-in window functions that never call those interfaces. +** +** The noopValueFunc() is called but is expected to do nothing. The +** noopStepFunc() is never called, and so it is marked with NO_TEST to +** let the test coverage routine know not to expect this function to be +** invoked. +*/ +static void noopStepFunc( /*NO_TEST*/ + sqlite3_context *p, /*NO_TEST*/ + int n, /*NO_TEST*/ + sqlite3_value **a /*NO_TEST*/ +){ /*NO_TEST*/ + UNUSED_PARAMETER(p); /*NO_TEST*/ + UNUSED_PARAMETER(n); /*NO_TEST*/ + UNUSED_PARAMETER(a); /*NO_TEST*/ + assert(0); /*NO_TEST*/ +} /*NO_TEST*/ +static void noopValueFunc(sqlite3_context *p){ UNUSED_PARAMETER(p); /*no-op*/ } + +/* Window functions that use all window interfaces: xStep, xFinal, +** xValue, and xInverse */ +#define WINDOWFUNCALL(name,nArg,extra) { \ + nArg, (SQLITE_FUNC_BUILTIN|SQLITE_UTF8|SQLITE_FUNC_WINDOW|extra), 0, 0, \ + name ## StepFunc, name ## FinalizeFunc, name ## ValueFunc, \ + name ## InvFunc, name ## Name, {0} \ +} + +/* Window functions that are implemented using bytecode and thus have +** no-op routines for their methods */ +#define WINDOWFUNCNOOP(name,nArg,extra) { \ + nArg, (SQLITE_FUNC_BUILTIN|SQLITE_UTF8|SQLITE_FUNC_WINDOW|extra), 0, 0, \ + noopStepFunc, noopValueFunc, noopValueFunc, \ + noopStepFunc, name ## Name, {0} \ +} + +/* Window functions that use all window interfaces: xStep, the +** same routine for xFinalize and xValue and which never call +** xInverse. */ +#define WINDOWFUNCX(name,nArg,extra) { \ + nArg, (SQLITE_FUNC_BUILTIN|SQLITE_UTF8|SQLITE_FUNC_WINDOW|extra), 0, 0, \ + name ## StepFunc, name ## ValueFunc, name ## ValueFunc, \ + noopStepFunc, name ## Name, {0} \ +} + + +/* +** Register those built-in window functions that are not also aggregates. +*/ +SQLITE_PRIVATE void sqlite3WindowFunctions(void){ + static FuncDef aWindowFuncs[] = { + WINDOWFUNCX(row_number, 0, 0), + WINDOWFUNCX(dense_rank, 0, 0), + WINDOWFUNCX(rank, 0, 0), + WINDOWFUNCALL(percent_rank, 0, 0), + WINDOWFUNCALL(cume_dist, 0, 0), + WINDOWFUNCALL(ntile, 1, 0), + WINDOWFUNCALL(last_value, 1, 0), + WINDOWFUNCALL(nth_value, 2, 0), + WINDOWFUNCALL(first_value, 1, 0), + WINDOWFUNCNOOP(lead, 1, 0), + WINDOWFUNCNOOP(lead, 2, 0), + WINDOWFUNCNOOP(lead, 3, 0), + WINDOWFUNCNOOP(lag, 1, 0), + WINDOWFUNCNOOP(lag, 2, 0), + WINDOWFUNCNOOP(lag, 3, 0), + }; + sqlite3InsertBuiltinFuncs(aWindowFuncs, ArraySize(aWindowFuncs)); +} + +static Window *windowFind(Parse *pParse, Window *pList, const char *zName){ + Window *p; + for(p=pList; p; p=p->pNextWin){ + if( sqlite3StrICmp(p->zName, zName)==0 ) break; + } + if( p==0 ){ + sqlite3ErrorMsg(pParse, "no such window: %s", zName); + } + return p; +} + +/* +** This function is called immediately after resolving the function name +** for a window function within a SELECT statement. Argument pList is a +** linked list of WINDOW definitions for the current SELECT statement. +** Argument pFunc is the function definition just resolved and pWin +** is the Window object representing the associated OVER clause. This +** function updates the contents of pWin as follows: +** +** * If the OVER clause referred to a named window (as in "max(x) OVER win"), +** search list pList for a matching WINDOW definition, and update pWin +** accordingly. If no such WINDOW clause can be found, leave an error +** in pParse. +** +** * If the function is a built-in window function that requires the +** window to be coerced (see "BUILT-IN WINDOW FUNCTIONS" at the top +** of this file), pWin is updated here. +*/ +SQLITE_PRIVATE void sqlite3WindowUpdate( + Parse *pParse, + Window *pList, /* List of named windows for this SELECT */ + Window *pWin, /* Window frame to update */ + FuncDef *pFunc /* Window function definition */ +){ + if( pWin->zName && pWin->eFrmType==0 ){ + Window *p = windowFind(pParse, pList, pWin->zName); + if( p==0 ) return; + pWin->pPartition = sqlite3ExprListDup(pParse->db, p->pPartition, 0); + pWin->pOrderBy = sqlite3ExprListDup(pParse->db, p->pOrderBy, 0); + pWin->pStart = sqlite3ExprDup(pParse->db, p->pStart, 0); + pWin->pEnd = sqlite3ExprDup(pParse->db, p->pEnd, 0); + pWin->eStart = p->eStart; + pWin->eEnd = p->eEnd; + pWin->eFrmType = p->eFrmType; + pWin->eExclude = p->eExclude; + }else{ + sqlite3WindowChain(pParse, pWin, pList); + } + if( (pWin->eFrmType==TK_RANGE) + && (pWin->pStart || pWin->pEnd) + && (pWin->pOrderBy==0 || pWin->pOrderBy->nExpr!=1) + ){ + sqlite3ErrorMsg(pParse, + "RANGE with offset PRECEDING/FOLLOWING requires one ORDER BY expression" + ); + }else + if( pFunc->funcFlags & SQLITE_FUNC_WINDOW ){ + sqlite3 *db = pParse->db; + if( pWin->pFilter ){ + sqlite3ErrorMsg(pParse, + "FILTER clause may only be used with aggregate window functions" + ); + }else{ + struct WindowUpdate { + const char *zFunc; + int eFrmType; + int eStart; + int eEnd; + } aUp[] = { + { row_numberName, TK_ROWS, TK_UNBOUNDED, TK_CURRENT }, + { dense_rankName, TK_RANGE, TK_UNBOUNDED, TK_CURRENT }, + { rankName, TK_RANGE, TK_UNBOUNDED, TK_CURRENT }, + { percent_rankName, TK_GROUPS, TK_CURRENT, TK_UNBOUNDED }, + { cume_distName, TK_GROUPS, TK_FOLLOWING, TK_UNBOUNDED }, + { ntileName, TK_ROWS, TK_CURRENT, TK_UNBOUNDED }, + { leadName, TK_ROWS, TK_UNBOUNDED, TK_UNBOUNDED }, + { lagName, TK_ROWS, TK_UNBOUNDED, TK_CURRENT }, + }; + int i; + for(i=0; izName==aUp[i].zFunc ){ + sqlite3ExprDelete(db, pWin->pStart); + sqlite3ExprDelete(db, pWin->pEnd); + pWin->pEnd = pWin->pStart = 0; + pWin->eFrmType = aUp[i].eFrmType; + pWin->eStart = aUp[i].eStart; + pWin->eEnd = aUp[i].eEnd; + pWin->eExclude = 0; + if( pWin->eStart==TK_FOLLOWING ){ + pWin->pStart = sqlite3Expr(db, TK_INTEGER, "1"); + } + break; + } + } + } + } + pWin->pWFunc = pFunc; +} + +/* +** Context object passed through sqlite3WalkExprList() to +** selectWindowRewriteExprCb() by selectWindowRewriteEList(). +*/ +typedef struct WindowRewrite WindowRewrite; +struct WindowRewrite { + Window *pWin; + SrcList *pSrc; + ExprList *pSub; + Table *pTab; + Select *pSubSelect; /* Current sub-select, if any */ +}; + +/* +** Callback function used by selectWindowRewriteEList(). If necessary, +** this function appends to the output expression-list and updates +** expression (*ppExpr) in place. +*/ +static int selectWindowRewriteExprCb(Walker *pWalker, Expr *pExpr){ + struct WindowRewrite *p = pWalker->u.pRewrite; + Parse *pParse = pWalker->pParse; + assert( p!=0 ); + assert( p->pWin!=0 ); + + /* If this function is being called from within a scalar sub-select + ** that used by the SELECT statement being processed, only process + ** TK_COLUMN expressions that refer to it (the outer SELECT). Do + ** not process aggregates or window functions at all, as they belong + ** to the scalar sub-select. */ + if( p->pSubSelect ){ + if( pExpr->op!=TK_COLUMN ){ + return WRC_Continue; + }else{ + int nSrc = p->pSrc->nSrc; + int i; + for(i=0; iiTable==p->pSrc->a[i].iCursor ) break; + } + if( i==nSrc ) return WRC_Continue; + } + } + + switch( pExpr->op ){ + + case TK_FUNCTION: + if( !ExprHasProperty(pExpr, EP_WinFunc) ){ + break; + }else{ + Window *pWin; + for(pWin=p->pWin; pWin; pWin=pWin->pNextWin){ + if( pExpr->y.pWin==pWin ){ + assert( pWin->pOwner==pExpr ); + return WRC_Prune; + } + } + } + /* no break */ deliberate_fall_through + + case TK_IF_NULL_ROW: + case TK_AGG_FUNCTION: + case TK_COLUMN: { + int iCol = -1; + if( pParse->db->mallocFailed ) return WRC_Abort; + if( p->pSub ){ + int i; + for(i=0; ipSub->nExpr; i++){ + if( 0==sqlite3ExprCompare(0, p->pSub->a[i].pExpr, pExpr, -1) ){ + iCol = i; + break; + } + } + } + if( iCol<0 ){ + Expr *pDup = sqlite3ExprDup(pParse->db, pExpr, 0); + if( pDup && pDup->op==TK_AGG_FUNCTION ) pDup->op = TK_FUNCTION; + p->pSub = sqlite3ExprListAppend(pParse, p->pSub, pDup); + } + if( p->pSub ){ + int f = pExpr->flags & EP_Collate; + assert( ExprHasProperty(pExpr, EP_Static)==0 ); + ExprSetProperty(pExpr, EP_Static); + sqlite3ExprDelete(pParse->db, pExpr); + ExprClearProperty(pExpr, EP_Static); + memset(pExpr, 0, sizeof(Expr)); + + pExpr->op = TK_COLUMN; + pExpr->iColumn = (iCol<0 ? p->pSub->nExpr-1: iCol); + pExpr->iTable = p->pWin->iEphCsr; + pExpr->y.pTab = p->pTab; + pExpr->flags = f; + } + if( pParse->db->mallocFailed ) return WRC_Abort; + break; + } + + default: /* no-op */ + break; + } + + return WRC_Continue; +} +static int selectWindowRewriteSelectCb(Walker *pWalker, Select *pSelect){ + struct WindowRewrite *p = pWalker->u.pRewrite; + Select *pSave = p->pSubSelect; + if( pSave==pSelect ){ + return WRC_Continue; + }else{ + p->pSubSelect = pSelect; + sqlite3WalkSelect(pWalker, pSelect); + p->pSubSelect = pSave; + } + return WRC_Prune; +} + + +/* +** Iterate through each expression in expression-list pEList. For each: +** +** * TK_COLUMN, +** * aggregate function, or +** * window function with a Window object that is not a member of the +** Window list passed as the second argument (pWin). +** +** Append the node to output expression-list (*ppSub). And replace it +** with a TK_COLUMN that reads the (N-1)th element of table +** pWin->iEphCsr, where N is the number of elements in (*ppSub) after +** appending the new one. +*/ +static void selectWindowRewriteEList( + Parse *pParse, + Window *pWin, + SrcList *pSrc, + ExprList *pEList, /* Rewrite expressions in this list */ + Table *pTab, + ExprList **ppSub /* IN/OUT: Sub-select expression-list */ +){ + Walker sWalker; + WindowRewrite sRewrite; + + assert( pWin!=0 ); + memset(&sWalker, 0, sizeof(Walker)); + memset(&sRewrite, 0, sizeof(WindowRewrite)); + + sRewrite.pSub = *ppSub; + sRewrite.pWin = pWin; + sRewrite.pSrc = pSrc; + sRewrite.pTab = pTab; + + sWalker.pParse = pParse; + sWalker.xExprCallback = selectWindowRewriteExprCb; + sWalker.xSelectCallback = selectWindowRewriteSelectCb; + sWalker.u.pRewrite = &sRewrite; + + (void)sqlite3WalkExprList(&sWalker, pEList); + + *ppSub = sRewrite.pSub; +} + +/* +** Append a copy of each expression in expression-list pAppend to +** expression list pList. Return a pointer to the result list. +*/ +static ExprList *exprListAppendList( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* List to which to append. Might be NULL */ + ExprList *pAppend, /* List of values to append. Might be NULL */ + int bIntToNull +){ + if( pAppend ){ + int i; + int nInit = pList ? pList->nExpr : 0; + for(i=0; inExpr; i++){ + sqlite3 *db = pParse->db; + Expr *pDup = sqlite3ExprDup(db, pAppend->a[i].pExpr, 0); + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pDup); + break; + } + if( bIntToNull ){ + int iDummy; + Expr *pSub; + pSub = sqlite3ExprSkipCollateAndLikely(pDup); + if( sqlite3ExprIsInteger(pSub, &iDummy) ){ + pSub->op = TK_NULL; + pSub->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse); + pSub->u.zToken = 0; + } + } + pList = sqlite3ExprListAppend(pParse, pList, pDup); + if( pList ) pList->a[nInit+i].fg.sortFlags = pAppend->a[i].fg.sortFlags; + } + } + return pList; +} + +/* +** When rewriting a query, if the new subquery in the FROM clause +** contains TK_AGG_FUNCTION nodes that refer to an outer query, +** then we have to increase the Expr->op2 values of those nodes +** due to the extra subquery layer that was added. +** +** See also the incrAggDepth() routine in resolve.c +*/ +static int sqlite3WindowExtraAggFuncDepth(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_AGG_FUNCTION + && pExpr->op2>=pWalker->walkerDepth + ){ + pExpr->op2++; + } + return WRC_Continue; +} + +static int disallowAggregatesInOrderByCb(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_AGG_FUNCTION && pExpr->pAggInfo==0 ){ + assert( !ExprHasProperty(pExpr, EP_IntValue) ); + sqlite3ErrorMsg(pWalker->pParse, + "misuse of aggregate: %s()", pExpr->u.zToken); + } + return WRC_Continue; +} + +/* +** If the SELECT statement passed as the second argument does not invoke +** any SQL window functions, this function is a no-op. Otherwise, it +** rewrites the SELECT statement so that window function xStep functions +** are invoked in the correct order as described under "SELECT REWRITING" +** at the top of this file. +*/ +SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){ + int rc = SQLITE_OK; + if( p->pWin + && p->pPrior==0 + && ALWAYS((p->selFlags & SF_WinRewrite)==0) + && ALWAYS(!IN_RENAME_OBJECT) + ){ + Vdbe *v = sqlite3GetVdbe(pParse); + sqlite3 *db = pParse->db; + Select *pSub = 0; /* The subquery */ + SrcList *pSrc = p->pSrc; + Expr *pWhere = p->pWhere; + ExprList *pGroupBy = p->pGroupBy; + Expr *pHaving = p->pHaving; + ExprList *pSort = 0; + + ExprList *pSublist = 0; /* Expression list for sub-query */ + Window *pMWin = p->pWin; /* Main window object */ + Window *pWin; /* Window object iterator */ + Table *pTab; + Walker w; + + u32 selFlags = p->selFlags; + + pTab = sqlite3DbMallocZero(db, sizeof(Table)); + if( pTab==0 ){ + return sqlite3ErrorToParser(db, SQLITE_NOMEM); + } + sqlite3AggInfoPersistWalkerInit(&w, pParse); + sqlite3WalkSelect(&w, p); + if( (p->selFlags & SF_Aggregate)==0 ){ + w.xExprCallback = disallowAggregatesInOrderByCb; + w.xSelectCallback = 0; + sqlite3WalkExprList(&w, p->pOrderBy); + } + + p->pSrc = 0; + p->pWhere = 0; + p->pGroupBy = 0; + p->pHaving = 0; + p->selFlags &= ~SF_Aggregate; + p->selFlags |= SF_WinRewrite; + + /* Create the ORDER BY clause for the sub-select. This is the concatenation + ** of the window PARTITION and ORDER BY clauses. Then, if this makes it + ** redundant, remove the ORDER BY from the parent SELECT. */ + pSort = exprListAppendList(pParse, 0, pMWin->pPartition, 1); + pSort = exprListAppendList(pParse, pSort, pMWin->pOrderBy, 1); + if( pSort && p->pOrderBy && p->pOrderBy->nExpr<=pSort->nExpr ){ + int nSave = pSort->nExpr; + pSort->nExpr = p->pOrderBy->nExpr; + if( sqlite3ExprListCompare(pSort, p->pOrderBy, -1)==0 ){ + sqlite3ExprListDelete(db, p->pOrderBy); + p->pOrderBy = 0; + } + pSort->nExpr = nSave; + } + + /* Assign a cursor number for the ephemeral table used to buffer rows. + ** The OpenEphemeral instruction is coded later, after it is known how + ** many columns the table will have. */ + pMWin->iEphCsr = pParse->nTab++; + pParse->nTab += 3; + + selectWindowRewriteEList(pParse, pMWin, pSrc, p->pEList, pTab, &pSublist); + selectWindowRewriteEList(pParse, pMWin, pSrc, p->pOrderBy, pTab, &pSublist); + pMWin->nBufferCol = (pSublist ? pSublist->nExpr : 0); + + /* Append the PARTITION BY and ORDER BY expressions to the to the + ** sub-select expression list. They are required to figure out where + ** boundaries for partitions and sets of peer rows lie. */ + pSublist = exprListAppendList(pParse, pSublist, pMWin->pPartition, 0); + pSublist = exprListAppendList(pParse, pSublist, pMWin->pOrderBy, 0); + + /* Append the arguments passed to each window function to the + ** sub-select expression list. Also allocate two registers for each + ** window function - one for the accumulator, another for interim + ** results. */ + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + ExprList *pArgs; + assert( ExprUseXList(pWin->pOwner) ); + assert( pWin->pWFunc!=0 ); + pArgs = pWin->pOwner->x.pList; + if( pWin->pWFunc->funcFlags & SQLITE_FUNC_SUBTYPE ){ + selectWindowRewriteEList(pParse, pMWin, pSrc, pArgs, pTab, &pSublist); + pWin->iArgCol = (pSublist ? pSublist->nExpr : 0); + pWin->bExprArgs = 1; + }else{ + pWin->iArgCol = (pSublist ? pSublist->nExpr : 0); + pSublist = exprListAppendList(pParse, pSublist, pArgs, 0); + } + if( pWin->pFilter ){ + Expr *pFilter = sqlite3ExprDup(db, pWin->pFilter, 0); + pSublist = sqlite3ExprListAppend(pParse, pSublist, pFilter); + } + pWin->regAccum = ++pParse->nMem; + pWin->regResult = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum); + } + + /* If there is no ORDER BY or PARTITION BY clause, and the window + ** function accepts zero arguments, and there are no other columns + ** selected (e.g. "SELECT row_number() OVER () FROM t1"), it is possible + ** that pSublist is still NULL here. Add a constant expression here to + ** keep everything legal in this case. + */ + if( pSublist==0 ){ + pSublist = sqlite3ExprListAppend(pParse, 0, + sqlite3Expr(db, TK_INTEGER, "0") + ); + } + + pSub = sqlite3SelectNew( + pParse, pSublist, pSrc, pWhere, pGroupBy, pHaving, pSort, 0, 0 + ); + TREETRACE(0x40,pParse,pSub, + ("New window-function subquery in FROM clause of (%u/%p)\n", + p->selId, p)); + p->pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0); + assert( pSub!=0 || p->pSrc==0 ); /* Due to db->mallocFailed test inside + ** of sqlite3DbMallocRawNN() called from + ** sqlite3SrcListAppend() */ + if( p->pSrc ){ + Table *pTab2; + p->pSrc->a[0].pSelect = pSub; + p->pSrc->a[0].fg.isCorrelated = 1; + sqlite3SrcListAssignCursors(pParse, p->pSrc); + pSub->selFlags |= SF_Expanded|SF_OrderByReqd; + pTab2 = sqlite3ResultSetOfSelect(pParse, pSub, SQLITE_AFF_NONE); + pSub->selFlags |= (selFlags & SF_Aggregate); + if( pTab2==0 ){ + /* Might actually be some other kind of error, but in that case + ** pParse->nErr will be set, so if SQLITE_NOMEM is set, we will get + ** the correct error message regardless. */ + rc = SQLITE_NOMEM; + }else{ + memcpy(pTab, pTab2, sizeof(Table)); + pTab->tabFlags |= TF_Ephemeral; + p->pSrc->a[0].pTab = pTab; + pTab = pTab2; + memset(&w, 0, sizeof(w)); + w.xExprCallback = sqlite3WindowExtraAggFuncDepth; + w.xSelectCallback = sqlite3WalkerDepthIncrease; + w.xSelectCallback2 = sqlite3WalkerDepthDecrease; + sqlite3WalkSelect(&w, pSub); + } + }else{ + sqlite3SelectDelete(db, pSub); + } + if( db->mallocFailed ) rc = SQLITE_NOMEM; + + /* Defer deleting the temporary table pTab because if an error occurred, + ** there could still be references to that table embedded in the + ** result-set or ORDER BY clause of the SELECT statement p. */ + sqlite3ParserAddCleanup(pParse, sqlite3DbFree, pTab); + } + + assert( rc==SQLITE_OK || pParse->nErr!=0 ); + return rc; +} + +/* +** Unlink the Window object from the Select to which it is attached, +** if it is attached. +*/ +SQLITE_PRIVATE void sqlite3WindowUnlinkFromSelect(Window *p){ + if( p->ppThis ){ + *p->ppThis = p->pNextWin; + if( p->pNextWin ) p->pNextWin->ppThis = p->ppThis; + p->ppThis = 0; + } +} + +/* +** Free the Window object passed as the second argument. +*/ +SQLITE_PRIVATE void sqlite3WindowDelete(sqlite3 *db, Window *p){ + if( p ){ + sqlite3WindowUnlinkFromSelect(p); + sqlite3ExprDelete(db, p->pFilter); + sqlite3ExprListDelete(db, p->pPartition); + sqlite3ExprListDelete(db, p->pOrderBy); + sqlite3ExprDelete(db, p->pEnd); + sqlite3ExprDelete(db, p->pStart); + sqlite3DbFree(db, p->zName); + sqlite3DbFree(db, p->zBase); + sqlite3DbFree(db, p); + } +} + +/* +** Free the linked list of Window objects starting at the second argument. +*/ +SQLITE_PRIVATE void sqlite3WindowListDelete(sqlite3 *db, Window *p){ + while( p ){ + Window *pNext = p->pNextWin; + sqlite3WindowDelete(db, p); + p = pNext; + } +} + +/* +** The argument expression is an PRECEDING or FOLLOWING offset. The +** value should be a non-negative integer. If the value is not a +** constant, change it to NULL. The fact that it is then a non-negative +** integer will be caught later. But it is important not to leave +** variable values in the expression tree. +*/ +static Expr *sqlite3WindowOffsetExpr(Parse *pParse, Expr *pExpr){ + if( 0==sqlite3ExprIsConstant(pExpr) ){ + if( IN_RENAME_OBJECT ) sqlite3RenameExprUnmap(pParse, pExpr); + sqlite3ExprDelete(pParse->db, pExpr); + pExpr = sqlite3ExprAlloc(pParse->db, TK_NULL, 0, 0); + } + return pExpr; +} + +/* +** Allocate and return a new Window object describing a Window Definition. +*/ +SQLITE_PRIVATE Window *sqlite3WindowAlloc( + Parse *pParse, /* Parsing context */ + int eType, /* Frame type. TK_RANGE, TK_ROWS, TK_GROUPS, or 0 */ + int eStart, /* Start type: CURRENT, PRECEDING, FOLLOWING, UNBOUNDED */ + Expr *pStart, /* Start window size if TK_PRECEDING or FOLLOWING */ + int eEnd, /* End type: CURRENT, FOLLOWING, TK_UNBOUNDED, PRECEDING */ + Expr *pEnd, /* End window size if TK_FOLLOWING or PRECEDING */ + u8 eExclude /* EXCLUDE clause */ +){ + Window *pWin = 0; + int bImplicitFrame = 0; + + /* Parser assures the following: */ + assert( eType==0 || eType==TK_RANGE || eType==TK_ROWS || eType==TK_GROUPS ); + assert( eStart==TK_CURRENT || eStart==TK_PRECEDING + || eStart==TK_UNBOUNDED || eStart==TK_FOLLOWING ); + assert( eEnd==TK_CURRENT || eEnd==TK_FOLLOWING + || eEnd==TK_UNBOUNDED || eEnd==TK_PRECEDING ); + assert( (eStart==TK_PRECEDING || eStart==TK_FOLLOWING)==(pStart!=0) ); + assert( (eEnd==TK_FOLLOWING || eEnd==TK_PRECEDING)==(pEnd!=0) ); + + if( eType==0 ){ + bImplicitFrame = 1; + eType = TK_RANGE; + } + + /* Additionally, the + ** starting boundary type may not occur earlier in the following list than + ** the ending boundary type: + ** + ** UNBOUNDED PRECEDING + ** PRECEDING + ** CURRENT ROW + ** FOLLOWING + ** UNBOUNDED FOLLOWING + ** + ** The parser ensures that "UNBOUNDED PRECEDING" cannot be used as an ending + ** boundary, and than "UNBOUNDED FOLLOWING" cannot be used as a starting + ** frame boundary. + */ + if( (eStart==TK_CURRENT && eEnd==TK_PRECEDING) + || (eStart==TK_FOLLOWING && (eEnd==TK_PRECEDING || eEnd==TK_CURRENT)) + ){ + sqlite3ErrorMsg(pParse, "unsupported frame specification"); + goto windowAllocErr; + } + + pWin = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window)); + if( pWin==0 ) goto windowAllocErr; + pWin->eFrmType = eType; + pWin->eStart = eStart; + pWin->eEnd = eEnd; + if( eExclude==0 && OptimizationDisabled(pParse->db, SQLITE_WindowFunc) ){ + eExclude = TK_NO; + } + pWin->eExclude = eExclude; + pWin->bImplicitFrame = bImplicitFrame; + pWin->pEnd = sqlite3WindowOffsetExpr(pParse, pEnd); + pWin->pStart = sqlite3WindowOffsetExpr(pParse, pStart); + return pWin; + +windowAllocErr: + sqlite3ExprDelete(pParse->db, pEnd); + sqlite3ExprDelete(pParse->db, pStart); + return 0; +} + +/* +** Attach PARTITION and ORDER BY clauses pPartition and pOrderBy to window +** pWin. Also, if parameter pBase is not NULL, set pWin->zBase to the +** equivalent nul-terminated string. +*/ +SQLITE_PRIVATE Window *sqlite3WindowAssemble( + Parse *pParse, + Window *pWin, + ExprList *pPartition, + ExprList *pOrderBy, + Token *pBase +){ + if( pWin ){ + pWin->pPartition = pPartition; + pWin->pOrderBy = pOrderBy; + if( pBase ){ + pWin->zBase = sqlite3DbStrNDup(pParse->db, pBase->z, pBase->n); + } + }else{ + sqlite3ExprListDelete(pParse->db, pPartition); + sqlite3ExprListDelete(pParse->db, pOrderBy); + } + return pWin; +} + +/* +** Window *pWin has just been created from a WINDOW clause. Token pBase +** is the base window. Earlier windows from the same WINDOW clause are +** stored in the linked list starting at pWin->pNextWin. This function +** either updates *pWin according to the base specification, or else +** leaves an error in pParse. +*/ +SQLITE_PRIVATE void sqlite3WindowChain(Parse *pParse, Window *pWin, Window *pList){ + if( pWin->zBase ){ + sqlite3 *db = pParse->db; + Window *pExist = windowFind(pParse, pList, pWin->zBase); + if( pExist ){ + const char *zErr = 0; + /* Check for errors */ + if( pWin->pPartition ){ + zErr = "PARTITION clause"; + }else if( pExist->pOrderBy && pWin->pOrderBy ){ + zErr = "ORDER BY clause"; + }else if( pExist->bImplicitFrame==0 ){ + zErr = "frame specification"; + } + if( zErr ){ + sqlite3ErrorMsg(pParse, + "cannot override %s of window: %s", zErr, pWin->zBase + ); + }else{ + pWin->pPartition = sqlite3ExprListDup(db, pExist->pPartition, 0); + if( pExist->pOrderBy ){ + assert( pWin->pOrderBy==0 ); + pWin->pOrderBy = sqlite3ExprListDup(db, pExist->pOrderBy, 0); + } + sqlite3DbFree(db, pWin->zBase); + pWin->zBase = 0; + } + } + } +} + +/* +** Attach window object pWin to expression p. +*/ +SQLITE_PRIVATE void sqlite3WindowAttach(Parse *pParse, Expr *p, Window *pWin){ + if( p ){ + assert( p->op==TK_FUNCTION ); + assert( pWin ); + p->y.pWin = pWin; + ExprSetProperty(p, EP_WinFunc); + pWin->pOwner = p; + if( (p->flags & EP_Distinct) && pWin->eFrmType!=TK_FILTER ){ + sqlite3ErrorMsg(pParse, + "DISTINCT is not supported for window functions" + ); + } + }else{ + sqlite3WindowDelete(pParse->db, pWin); + } +} + +/* +** Possibly link window pWin into the list at pSel->pWin (window functions +** to be processed as part of SELECT statement pSel). The window is linked +** in if either (a) there are no other windows already linked to this +** SELECT, or (b) the windows already linked use a compatible window frame. +*/ +SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin){ + if( pSel ){ + if( 0==pSel->pWin || 0==sqlite3WindowCompare(0, pSel->pWin, pWin, 0) ){ + pWin->pNextWin = pSel->pWin; + if( pSel->pWin ){ + pSel->pWin->ppThis = &pWin->pNextWin; + } + pSel->pWin = pWin; + pWin->ppThis = &pSel->pWin; + }else{ + if( sqlite3ExprListCompare(pWin->pPartition, pSel->pWin->pPartition,-1) ){ + pSel->selFlags |= SF_MultiPart; + } + } + } +} + +/* +** Return 0 if the two window objects are identical, 1 if they are +** different, or 2 if it cannot be determined if the objects are identical +** or not. Identical window objects can be processed in a single scan. +*/ +SQLITE_PRIVATE int sqlite3WindowCompare( + const Parse *pParse, + const Window *p1, + const Window *p2, + int bFilter +){ + int res; + if( NEVER(p1==0) || NEVER(p2==0) ) return 1; + if( p1->eFrmType!=p2->eFrmType ) return 1; + if( p1->eStart!=p2->eStart ) return 1; + if( p1->eEnd!=p2->eEnd ) return 1; + if( p1->eExclude!=p2->eExclude ) return 1; + if( sqlite3ExprCompare(pParse, p1->pStart, p2->pStart, -1) ) return 1; + if( sqlite3ExprCompare(pParse, p1->pEnd, p2->pEnd, -1) ) return 1; + if( (res = sqlite3ExprListCompare(p1->pPartition, p2->pPartition, -1)) ){ + return res; + } + if( (res = sqlite3ExprListCompare(p1->pOrderBy, p2->pOrderBy, -1)) ){ + return res; + } + if( bFilter ){ + if( (res = sqlite3ExprCompare(pParse, p1->pFilter, p2->pFilter, -1)) ){ + return res; + } + } + return 0; +} + + +/* +** This is called by code in select.c before it calls sqlite3WhereBegin() +** to begin iterating through the sub-query results. It is used to allocate +** and initialize registers and cursors used by sqlite3WindowCodeStep(). +*/ +SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse *pParse, Select *pSelect){ + int nEphExpr = pSelect->pSrc->a[0].pSelect->pEList->nExpr; + Window *pMWin = pSelect->pWin; + Window *pWin; + Vdbe *v = sqlite3GetVdbe(pParse); + + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pMWin->iEphCsr, nEphExpr); + sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+1, pMWin->iEphCsr); + sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+2, pMWin->iEphCsr); + sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+3, pMWin->iEphCsr); + + /* Allocate registers to use for PARTITION BY values, if any. Initialize + ** said registers to NULL. */ + if( pMWin->pPartition ){ + int nExpr = pMWin->pPartition->nExpr; + pMWin->regPart = pParse->nMem+1; + pParse->nMem += nExpr; + sqlite3VdbeAddOp3(v, OP_Null, 0, pMWin->regPart, pMWin->regPart+nExpr-1); + } + + pMWin->regOne = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 1, pMWin->regOne); + + if( pMWin->eExclude ){ + pMWin->regStartRowid = ++pParse->nMem; + pMWin->regEndRowid = ++pParse->nMem; + pMWin->csrApp = pParse->nTab++; + sqlite3VdbeAddOp2(v, OP_Integer, 1, pMWin->regStartRowid); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pMWin->regEndRowid); + sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->csrApp, pMWin->iEphCsr); + return; + } + + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + FuncDef *p = pWin->pWFunc; + if( (p->funcFlags & SQLITE_FUNC_MINMAX) && pWin->eStart!=TK_UNBOUNDED ){ + /* The inline versions of min() and max() require a single ephemeral + ** table and 3 registers. The registers are used as follows: + ** + ** regApp+0: slot to copy min()/max() argument to for MakeRecord + ** regApp+1: integer value used to ensure keys are unique + ** regApp+2: output of MakeRecord + */ + ExprList *pList; + KeyInfo *pKeyInfo; + assert( ExprUseXList(pWin->pOwner) ); + pList = pWin->pOwner->x.pList; + pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pList, 0, 0); + pWin->csrApp = pParse->nTab++; + pWin->regApp = pParse->nMem+1; + pParse->nMem += 3; + if( pKeyInfo && pWin->pWFunc->zName[1]=='i' ){ + assert( pKeyInfo->aSortFlags[0]==0 ); + pKeyInfo->aSortFlags[0] = KEYINFO_ORDER_DESC; + } + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pWin->csrApp, 2); + sqlite3VdbeAppendP4(v, pKeyInfo, P4_KEYINFO); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pWin->regApp+1); + } + else if( p->zName==nth_valueName || p->zName==first_valueName ){ + /* Allocate two registers at pWin->regApp. These will be used to + ** store the start and end index of the current frame. */ + pWin->regApp = pParse->nMem+1; + pWin->csrApp = pParse->nTab++; + pParse->nMem += 2; + sqlite3VdbeAddOp2(v, OP_OpenDup, pWin->csrApp, pMWin->iEphCsr); + } + else if( p->zName==leadName || p->zName==lagName ){ + pWin->csrApp = pParse->nTab++; + sqlite3VdbeAddOp2(v, OP_OpenDup, pWin->csrApp, pMWin->iEphCsr); + } + } +} + +#define WINDOW_STARTING_INT 0 +#define WINDOW_ENDING_INT 1 +#define WINDOW_NTH_VALUE_INT 2 +#define WINDOW_STARTING_NUM 3 +#define WINDOW_ENDING_NUM 4 + +/* +** A "PRECEDING " (eCond==0) or "FOLLOWING " (eCond==1) or the +** value of the second argument to nth_value() (eCond==2) has just been +** evaluated and the result left in register reg. This function generates VM +** code to check that the value is a non-negative integer and throws an +** exception if it is not. +*/ +static void windowCheckValue(Parse *pParse, int reg, int eCond){ + static const char *azErr[] = { + "frame starting offset must be a non-negative integer", + "frame ending offset must be a non-negative integer", + "second argument to nth_value must be a positive integer", + "frame starting offset must be a non-negative number", + "frame ending offset must be a non-negative number", + }; + static int aOp[] = { OP_Ge, OP_Ge, OP_Gt, OP_Ge, OP_Ge }; + Vdbe *v = sqlite3GetVdbe(pParse); + int regZero = sqlite3GetTempReg(pParse); + assert( eCond>=0 && eCond=WINDOW_STARTING_NUM ){ + int regString = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp4(v, OP_String8, 0, regString, 0, "", P4_STATIC); + sqlite3VdbeAddOp3(v, OP_Ge, regString, sqlite3VdbeCurrentAddr(v)+2, reg); + sqlite3VdbeChangeP5(v, SQLITE_AFF_NUMERIC|SQLITE_JUMPIFNULL); + VdbeCoverage(v); + assert( eCond==3 || eCond==4 ); + VdbeCoverageIf(v, eCond==3); + VdbeCoverageIf(v, eCond==4); + }else{ + sqlite3VdbeAddOp2(v, OP_MustBeInt, reg, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); + assert( eCond==0 || eCond==1 || eCond==2 ); + VdbeCoverageIf(v, eCond==0); + VdbeCoverageIf(v, eCond==1); + VdbeCoverageIf(v, eCond==2); + } + sqlite3VdbeAddOp3(v, aOp[eCond], regZero, sqlite3VdbeCurrentAddr(v)+2, reg); + sqlite3VdbeChangeP5(v, SQLITE_AFF_NUMERIC); + VdbeCoverageNeverNullIf(v, eCond==0); /* NULL case captured by */ + VdbeCoverageNeverNullIf(v, eCond==1); /* the OP_MustBeInt */ + VdbeCoverageNeverNullIf(v, eCond==2); + VdbeCoverageNeverNullIf(v, eCond==3); /* NULL case caught by */ + VdbeCoverageNeverNullIf(v, eCond==4); /* the OP_Ge */ + sqlite3MayAbort(pParse); + sqlite3VdbeAddOp2(v, OP_Halt, SQLITE_ERROR, OE_Abort); + sqlite3VdbeAppendP4(v, (void*)azErr[eCond], P4_STATIC); + sqlite3ReleaseTempReg(pParse, regZero); +} + +/* +** Return the number of arguments passed to the window-function associated +** with the object passed as the only argument to this function. +*/ +static int windowArgCount(Window *pWin){ + const ExprList *pList; + assert( ExprUseXList(pWin->pOwner) ); + pList = pWin->pOwner->x.pList; + return (pList ? pList->nExpr : 0); +} + +typedef struct WindowCodeArg WindowCodeArg; +typedef struct WindowCsrAndReg WindowCsrAndReg; + +/* +** See comments above struct WindowCodeArg. +*/ +struct WindowCsrAndReg { + int csr; /* Cursor number */ + int reg; /* First in array of peer values */ +}; + +/* +** A single instance of this structure is allocated on the stack by +** sqlite3WindowCodeStep() and a pointer to it passed to the various helper +** routines. This is to reduce the number of arguments required by each +** helper function. +** +** regArg: +** Each window function requires an accumulator register (just as an +** ordinary aggregate function does). This variable is set to the first +** in an array of accumulator registers - one for each window function +** in the WindowCodeArg.pMWin list. +** +** eDelete: +** The window functions implementation sometimes caches the input rows +** that it processes in a temporary table. If it is not zero, this +** variable indicates when rows may be removed from the temp table (in +** order to reduce memory requirements - it would always be safe just +** to leave them there). Possible values for eDelete are: +** +** WINDOW_RETURN_ROW: +** An input row can be discarded after it is returned to the caller. +** +** WINDOW_AGGINVERSE: +** An input row can be discarded after the window functions xInverse() +** callbacks have been invoked in it. +** +** WINDOW_AGGSTEP: +** An input row can be discarded after the window functions xStep() +** callbacks have been invoked in it. +** +** start,current,end +** Consider a window-frame similar to the following: +** +** (ORDER BY a, b GROUPS BETWEEN 2 PRECEDING AND 2 FOLLOWING) +** +** The windows functions implementation caches the input rows in a temp +** table, sorted by "a, b" (it actually populates the cache lazily, and +** aggressively removes rows once they are no longer required, but that's +** a mere detail). It keeps three cursors open on the temp table. One +** (current) that points to the next row to return to the query engine +** once its window function values have been calculated. Another (end) +** points to the next row to call the xStep() method of each window function +** on (so that it is 2 groups ahead of current). And a third (start) that +** points to the next row to call the xInverse() method of each window +** function on. +** +** Each cursor (start, current and end) consists of a VDBE cursor +** (WindowCsrAndReg.csr) and an array of registers (starting at +** WindowCodeArg.reg) that always contains a copy of the peer values +** read from the corresponding cursor. +** +** Depending on the window-frame in question, all three cursors may not +** be required. In this case both WindowCodeArg.csr and reg are set to +** 0. +*/ +struct WindowCodeArg { + Parse *pParse; /* Parse context */ + Window *pMWin; /* First in list of functions being processed */ + Vdbe *pVdbe; /* VDBE object */ + int addrGosub; /* OP_Gosub to this address to return one row */ + int regGosub; /* Register used with OP_Gosub(addrGosub) */ + int regArg; /* First in array of accumulator registers */ + int eDelete; /* See above */ + int regRowid; + + WindowCsrAndReg start; + WindowCsrAndReg current; + WindowCsrAndReg end; +}; + +/* +** Generate VM code to read the window frames peer values from cursor csr into +** an array of registers starting at reg. +*/ +static void windowReadPeerValues( + WindowCodeArg *p, + int csr, + int reg +){ + Window *pMWin = p->pMWin; + ExprList *pOrderBy = pMWin->pOrderBy; + if( pOrderBy ){ + Vdbe *v = sqlite3GetVdbe(p->pParse); + ExprList *pPart = pMWin->pPartition; + int iColOff = pMWin->nBufferCol + (pPart ? pPart->nExpr : 0); + int i; + for(i=0; inExpr; i++){ + sqlite3VdbeAddOp3(v, OP_Column, csr, iColOff+i, reg+i); + } + } +} + +/* +** Generate VM code to invoke either xStep() (if bInverse is 0) or +** xInverse (if bInverse is non-zero) for each window function in the +** linked list starting at pMWin. Or, for built-in window functions +** that do not use the standard function API, generate the required +** inline VM code. +** +** If argument csr is greater than or equal to 0, then argument reg is +** the first register in an array of registers guaranteed to be large +** enough to hold the array of arguments for each function. In this case +** the arguments are extracted from the current row of csr into the +** array of registers before invoking OP_AggStep or OP_AggInverse +** +** Or, if csr is less than zero, then the array of registers at reg is +** already populated with all columns from the current row of the sub-query. +** +** If argument regPartSize is non-zero, then it is a register containing the +** number of rows in the current partition. +*/ +static void windowAggStep( + WindowCodeArg *p, + Window *pMWin, /* Linked list of window functions */ + int csr, /* Read arguments from this cursor */ + int bInverse, /* True to invoke xInverse instead of xStep */ + int reg /* Array of registers */ +){ + Parse *pParse = p->pParse; + Vdbe *v = sqlite3GetVdbe(pParse); + Window *pWin; + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + FuncDef *pFunc = pWin->pWFunc; + int regArg; + int nArg = pWin->bExprArgs ? 0 : windowArgCount(pWin); + int i; + + assert( bInverse==0 || pWin->eStart!=TK_UNBOUNDED ); + + /* All OVER clauses in the same window function aggregate step must + ** be the same. */ + assert( pWin==pMWin || sqlite3WindowCompare(pParse,pWin,pMWin,0)!=1 ); + + for(i=0; izName!=nth_valueName ){ + sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol+i, reg+i); + }else{ + sqlite3VdbeAddOp3(v, OP_Column, pMWin->iEphCsr, pWin->iArgCol+i, reg+i); + } + } + regArg = reg; + + if( pMWin->regStartRowid==0 + && (pFunc->funcFlags & SQLITE_FUNC_MINMAX) + && (pWin->eStart!=TK_UNBOUNDED) + ){ + int addrIsNull = sqlite3VdbeAddOp1(v, OP_IsNull, regArg); + VdbeCoverage(v); + if( bInverse==0 ){ + sqlite3VdbeAddOp2(v, OP_AddImm, pWin->regApp+1, 1); + sqlite3VdbeAddOp2(v, OP_SCopy, regArg, pWin->regApp); + sqlite3VdbeAddOp3(v, OP_MakeRecord, pWin->regApp, 2, pWin->regApp+2); + sqlite3VdbeAddOp2(v, OP_IdxInsert, pWin->csrApp, pWin->regApp+2); + }else{ + sqlite3VdbeAddOp4Int(v, OP_SeekGE, pWin->csrApp, 0, regArg, 1); + VdbeCoverageNeverTaken(v); + sqlite3VdbeAddOp1(v, OP_Delete, pWin->csrApp); + sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); + } + sqlite3VdbeJumpHere(v, addrIsNull); + }else if( pWin->regApp ){ + assert( pFunc->zName==nth_valueName + || pFunc->zName==first_valueName + ); + assert( bInverse==0 || bInverse==1 ); + sqlite3VdbeAddOp2(v, OP_AddImm, pWin->regApp+1-bInverse, 1); + }else if( pFunc->xSFunc!=noopStepFunc ){ + int addrIf = 0; + if( pWin->pFilter ){ + int regTmp; + assert( ExprUseXList(pWin->pOwner) ); + assert( pWin->bExprArgs || !nArg ||nArg==pWin->pOwner->x.pList->nExpr ); + assert( pWin->bExprArgs || nArg ||pWin->pOwner->x.pList==0 ); + regTmp = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol+nArg,regTmp); + addrIf = sqlite3VdbeAddOp3(v, OP_IfNot, regTmp, 0, 1); + VdbeCoverage(v); + sqlite3ReleaseTempReg(pParse, regTmp); + } + + if( pWin->bExprArgs ){ + int iOp = sqlite3VdbeCurrentAddr(v); + int iEnd; + + assert( ExprUseXList(pWin->pOwner) ); + nArg = pWin->pOwner->x.pList->nExpr; + regArg = sqlite3GetTempRange(pParse, nArg); + sqlite3ExprCodeExprList(pParse, pWin->pOwner->x.pList, regArg, 0, 0); + + for(iEnd=sqlite3VdbeCurrentAddr(v); iOpopcode==OP_Column && pOp->p1==pMWin->iEphCsr ){ + pOp->p1 = csr; + } + } + } + if( pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){ + CollSeq *pColl; + assert( nArg>0 ); + assert( ExprUseXList(pWin->pOwner) ); + pColl = sqlite3ExprNNCollSeq(pParse, pWin->pOwner->x.pList->a[0].pExpr); + sqlite3VdbeAddOp4(v, OP_CollSeq, 0,0,0, (const char*)pColl, P4_COLLSEQ); + } + sqlite3VdbeAddOp3(v, bInverse? OP_AggInverse : OP_AggStep, + bInverse, regArg, pWin->regAccum); + sqlite3VdbeAppendP4(v, pFunc, P4_FUNCDEF); + sqlite3VdbeChangeP5(v, (u8)nArg); + if( pWin->bExprArgs ){ + sqlite3ReleaseTempRange(pParse, regArg, nArg); + } + if( addrIf ) sqlite3VdbeJumpHere(v, addrIf); + } + } +} + +/* +** Values that may be passed as the second argument to windowCodeOp(). +*/ +#define WINDOW_RETURN_ROW 1 +#define WINDOW_AGGINVERSE 2 +#define WINDOW_AGGSTEP 3 + +/* +** Generate VM code to invoke either xValue() (bFin==0) or xFinalize() +** (bFin==1) for each window function in the linked list starting at +** pMWin. Or, for built-in window-functions that do not use the standard +** API, generate the equivalent VM code. +*/ +static void windowAggFinal(WindowCodeArg *p, int bFin){ + Parse *pParse = p->pParse; + Window *pMWin = p->pMWin; + Vdbe *v = sqlite3GetVdbe(pParse); + Window *pWin; + + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + if( pMWin->regStartRowid==0 + && (pWin->pWFunc->funcFlags & SQLITE_FUNC_MINMAX) + && (pWin->eStart!=TK_UNBOUNDED) + ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regResult); + sqlite3VdbeAddOp1(v, OP_Last, pWin->csrApp); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Column, pWin->csrApp, 0, pWin->regResult); + sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); + }else if( pWin->regApp ){ + assert( pMWin->regStartRowid==0 ); + }else{ + int nArg = windowArgCount(pWin); + if( bFin ){ + sqlite3VdbeAddOp2(v, OP_AggFinal, pWin->regAccum, nArg); + sqlite3VdbeAppendP4(v, pWin->pWFunc, P4_FUNCDEF); + sqlite3VdbeAddOp2(v, OP_Copy, pWin->regAccum, pWin->regResult); + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum); + }else{ + sqlite3VdbeAddOp3(v, OP_AggValue,pWin->regAccum,nArg,pWin->regResult); + sqlite3VdbeAppendP4(v, pWin->pWFunc, P4_FUNCDEF); + } + } + } +} + +/* +** Generate code to calculate the current values of all window functions in the +** p->pMWin list by doing a full scan of the current window frame. Store the +** results in the Window.regResult registers, ready to return the upper +** layer. +*/ +static void windowFullScan(WindowCodeArg *p){ + Window *pWin; + Parse *pParse = p->pParse; + Window *pMWin = p->pMWin; + Vdbe *v = p->pVdbe; + + int regCRowid = 0; /* Current rowid value */ + int regCPeer = 0; /* Current peer values */ + int regRowid = 0; /* AggStep rowid value */ + int regPeer = 0; /* AggStep peer values */ + + int nPeer; + int lblNext; + int lblBrk; + int addrNext; + int csr; + + VdbeModuleComment((v, "windowFullScan begin")); + + assert( pMWin!=0 ); + csr = pMWin->csrApp; + nPeer = (pMWin->pOrderBy ? pMWin->pOrderBy->nExpr : 0); + + lblNext = sqlite3VdbeMakeLabel(pParse); + lblBrk = sqlite3VdbeMakeLabel(pParse); + + regCRowid = sqlite3GetTempReg(pParse); + regRowid = sqlite3GetTempReg(pParse); + if( nPeer ){ + regCPeer = sqlite3GetTempRange(pParse, nPeer); + regPeer = sqlite3GetTempRange(pParse, nPeer); + } + + sqlite3VdbeAddOp2(v, OP_Rowid, pMWin->iEphCsr, regCRowid); + windowReadPeerValues(p, pMWin->iEphCsr, regCPeer); + + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum); + } + + sqlite3VdbeAddOp3(v, OP_SeekGE, csr, lblBrk, pMWin->regStartRowid); + VdbeCoverage(v); + addrNext = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp2(v, OP_Rowid, csr, regRowid); + sqlite3VdbeAddOp3(v, OP_Gt, pMWin->regEndRowid, lblBrk, regRowid); + VdbeCoverageNeverNull(v); + + if( pMWin->eExclude==TK_CURRENT ){ + sqlite3VdbeAddOp3(v, OP_Eq, regCRowid, lblNext, regRowid); + VdbeCoverageNeverNull(v); + }else if( pMWin->eExclude!=TK_NO ){ + int addr; + int addrEq = 0; + KeyInfo *pKeyInfo = 0; + + if( pMWin->pOrderBy ){ + pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pMWin->pOrderBy, 0, 0); + } + if( pMWin->eExclude==TK_TIES ){ + addrEq = sqlite3VdbeAddOp3(v, OP_Eq, regCRowid, 0, regRowid); + VdbeCoverageNeverNull(v); + } + if( pKeyInfo ){ + windowReadPeerValues(p, csr, regPeer); + sqlite3VdbeAddOp3(v, OP_Compare, regPeer, regCPeer, nPeer); + sqlite3VdbeAppendP4(v, (void*)pKeyInfo, P4_KEYINFO); + addr = sqlite3VdbeCurrentAddr(v)+1; + sqlite3VdbeAddOp3(v, OP_Jump, addr, lblNext, addr); + VdbeCoverageEqNe(v); + }else{ + sqlite3VdbeAddOp2(v, OP_Goto, 0, lblNext); + } + if( addrEq ) sqlite3VdbeJumpHere(v, addrEq); + } + + windowAggStep(p, pMWin, csr, 0, p->regArg); + + sqlite3VdbeResolveLabel(v, lblNext); + sqlite3VdbeAddOp2(v, OP_Next, csr, addrNext); + VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addrNext-1); + sqlite3VdbeJumpHere(v, addrNext+1); + sqlite3ReleaseTempReg(pParse, regRowid); + sqlite3ReleaseTempReg(pParse, regCRowid); + if( nPeer ){ + sqlite3ReleaseTempRange(pParse, regPeer, nPeer); + sqlite3ReleaseTempRange(pParse, regCPeer, nPeer); + } + + windowAggFinal(p, 1); + VdbeModuleComment((v, "windowFullScan end")); +} + +/* +** Invoke the sub-routine at regGosub (generated by code in select.c) to +** return the current row of Window.iEphCsr. If all window functions are +** aggregate window functions that use the standard API, a single +** OP_Gosub instruction is all that this routine generates. Extra VM code +** for per-row processing is only generated for the following built-in window +** functions: +** +** nth_value() +** first_value() +** lag() +** lead() +*/ +static void windowReturnOneRow(WindowCodeArg *p){ + Window *pMWin = p->pMWin; + Vdbe *v = p->pVdbe; + + if( pMWin->regStartRowid ){ + windowFullScan(p); + }else{ + Parse *pParse = p->pParse; + Window *pWin; + + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + FuncDef *pFunc = pWin->pWFunc; + assert( ExprUseXList(pWin->pOwner) ); + if( pFunc->zName==nth_valueName + || pFunc->zName==first_valueName + ){ + int csr = pWin->csrApp; + int lbl = sqlite3VdbeMakeLabel(pParse); + int tmpReg = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regResult); + + if( pFunc->zName==nth_valueName ){ + sqlite3VdbeAddOp3(v, OP_Column,pMWin->iEphCsr,pWin->iArgCol+1,tmpReg); + windowCheckValue(pParse, tmpReg, 2); + }else{ + sqlite3VdbeAddOp2(v, OP_Integer, 1, tmpReg); + } + sqlite3VdbeAddOp3(v, OP_Add, tmpReg, pWin->regApp, tmpReg); + sqlite3VdbeAddOp3(v, OP_Gt, pWin->regApp+1, lbl, tmpReg); + VdbeCoverageNeverNull(v); + sqlite3VdbeAddOp3(v, OP_SeekRowid, csr, 0, tmpReg); + VdbeCoverageNeverTaken(v); + sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol, pWin->regResult); + sqlite3VdbeResolveLabel(v, lbl); + sqlite3ReleaseTempReg(pParse, tmpReg); + } + else if( pFunc->zName==leadName || pFunc->zName==lagName ){ + int nArg = pWin->pOwner->x.pList->nExpr; + int csr = pWin->csrApp; + int lbl = sqlite3VdbeMakeLabel(pParse); + int tmpReg = sqlite3GetTempReg(pParse); + int iEph = pMWin->iEphCsr; + + if( nArg<3 ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regResult); + }else{ + sqlite3VdbeAddOp3(v, OP_Column, iEph,pWin->iArgCol+2,pWin->regResult); + } + sqlite3VdbeAddOp2(v, OP_Rowid, iEph, tmpReg); + if( nArg<2 ){ + int val = (pFunc->zName==leadName ? 1 : -1); + sqlite3VdbeAddOp2(v, OP_AddImm, tmpReg, val); + }else{ + int op = (pFunc->zName==leadName ? OP_Add : OP_Subtract); + int tmpReg2 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_Column, iEph, pWin->iArgCol+1, tmpReg2); + sqlite3VdbeAddOp3(v, op, tmpReg2, tmpReg, tmpReg); + sqlite3ReleaseTempReg(pParse, tmpReg2); + } + + sqlite3VdbeAddOp3(v, OP_SeekRowid, csr, lbl, tmpReg); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol, pWin->regResult); + sqlite3VdbeResolveLabel(v, lbl); + sqlite3ReleaseTempReg(pParse, tmpReg); + } + } + } + sqlite3VdbeAddOp2(v, OP_Gosub, p->regGosub, p->addrGosub); +} + +/* +** Generate code to set the accumulator register for each window function +** in the linked list passed as the second argument to NULL. And perform +** any equivalent initialization required by any built-in window functions +** in the list. +*/ +static int windowInitAccum(Parse *pParse, Window *pMWin){ + Vdbe *v = sqlite3GetVdbe(pParse); + int regArg; + int nArg = 0; + Window *pWin; + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + FuncDef *pFunc = pWin->pWFunc; + assert( pWin->regAccum ); + sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum); + nArg = MAX(nArg, windowArgCount(pWin)); + if( pMWin->regStartRowid==0 ){ + if( pFunc->zName==nth_valueName || pFunc->zName==first_valueName ){ + sqlite3VdbeAddOp2(v, OP_Integer, 0, pWin->regApp); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pWin->regApp+1); + } + + if( (pFunc->funcFlags & SQLITE_FUNC_MINMAX) && pWin->csrApp ){ + assert( pWin->eStart!=TK_UNBOUNDED ); + sqlite3VdbeAddOp1(v, OP_ResetSorter, pWin->csrApp); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pWin->regApp+1); + } + } + } + regArg = pParse->nMem+1; + pParse->nMem += nArg; + return regArg; +} + +/* +** Return true if the current frame should be cached in the ephemeral table, +** even if there are no xInverse() calls required. +*/ +static int windowCacheFrame(Window *pMWin){ + Window *pWin; + if( pMWin->regStartRowid ) return 1; + for(pWin=pMWin; pWin; pWin=pWin->pNextWin){ + FuncDef *pFunc = pWin->pWFunc; + if( (pFunc->zName==nth_valueName) + || (pFunc->zName==first_valueName) + || (pFunc->zName==leadName) + || (pFunc->zName==lagName) + ){ + return 1; + } + } + return 0; +} + +/* +** regOld and regNew are each the first register in an array of size +** pOrderBy->nExpr. This function generates code to compare the two +** arrays of registers using the collation sequences and other comparison +** parameters specified by pOrderBy. +** +** If the two arrays are not equal, the contents of regNew is copied to +** regOld and control falls through. Otherwise, if the contents of the arrays +** are equal, an OP_Goto is executed. The address of the OP_Goto is returned. +*/ +static void windowIfNewPeer( + Parse *pParse, + ExprList *pOrderBy, + int regNew, /* First in array of new values */ + int regOld, /* First in array of old values */ + int addr /* Jump here */ +){ + Vdbe *v = sqlite3GetVdbe(pParse); + if( pOrderBy ){ + int nVal = pOrderBy->nExpr; + KeyInfo *pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pOrderBy, 0, 0); + sqlite3VdbeAddOp3(v, OP_Compare, regOld, regNew, nVal); + sqlite3VdbeAppendP4(v, (void*)pKeyInfo, P4_KEYINFO); + sqlite3VdbeAddOp3(v, OP_Jump, + sqlite3VdbeCurrentAddr(v)+1, addr, sqlite3VdbeCurrentAddr(v)+1 + ); + VdbeCoverageEqNe(v); + sqlite3VdbeAddOp3(v, OP_Copy, regNew, regOld, nVal-1); + }else{ + sqlite3VdbeAddOp2(v, OP_Goto, 0, addr); + } +} + +/* +** This function is called as part of generating VM programs for RANGE +** offset PRECEDING/FOLLOWING frame boundaries. Assuming "ASC" order for +** the ORDER BY term in the window, and that argument op is OP_Ge, it generates +** code equivalent to: +** +** if( csr1.peerVal + regVal >= csr2.peerVal ) goto lbl; +** +** The value of parameter op may also be OP_Gt or OP_Le. In these cases the +** operator in the above pseudo-code is replaced with ">" or "<=", respectively. +** +** If the sort-order for the ORDER BY term in the window is DESC, then the +** comparison is reversed. Instead of adding regVal to csr1.peerVal, it is +** subtracted. And the comparison operator is inverted to - ">=" becomes "<=", +** ">" becomes "<", and so on. So, with DESC sort order, if the argument op +** is OP_Ge, the generated code is equivalent to: +** +** if( csr1.peerVal - regVal <= csr2.peerVal ) goto lbl; +** +** A special type of arithmetic is used such that if csr1.peerVal is not +** a numeric type (real or integer), then the result of the addition +** or subtraction is a a copy of csr1.peerVal. +*/ +static void windowCodeRangeTest( + WindowCodeArg *p, + int op, /* OP_Ge, OP_Gt, or OP_Le */ + int csr1, /* Cursor number for cursor 1 */ + int regVal, /* Register containing non-negative number */ + int csr2, /* Cursor number for cursor 2 */ + int lbl /* Jump destination if condition is true */ +){ + Parse *pParse = p->pParse; + Vdbe *v = sqlite3GetVdbe(pParse); + ExprList *pOrderBy = p->pMWin->pOrderBy; /* ORDER BY clause for window */ + int reg1 = sqlite3GetTempReg(pParse); /* Reg. for csr1.peerVal+regVal */ + int reg2 = sqlite3GetTempReg(pParse); /* Reg. for csr2.peerVal */ + int regString = ++pParse->nMem; /* Reg. for constant value '' */ + int arith = OP_Add; /* OP_Add or OP_Subtract */ + int addrGe; /* Jump destination */ + int addrDone = sqlite3VdbeMakeLabel(pParse); /* Address past OP_Ge */ + CollSeq *pColl; + + /* Read the peer-value from each cursor into a register */ + windowReadPeerValues(p, csr1, reg1); + windowReadPeerValues(p, csr2, reg2); + + assert( op==OP_Ge || op==OP_Gt || op==OP_Le ); + assert( pOrderBy && pOrderBy->nExpr==1 ); + if( pOrderBy->a[0].fg.sortFlags & KEYINFO_ORDER_DESC ){ + switch( op ){ + case OP_Ge: op = OP_Le; break; + case OP_Gt: op = OP_Lt; break; + default: assert( op==OP_Le ); op = OP_Ge; break; + } + arith = OP_Subtract; + } + + VdbeModuleComment((v, "CodeRangeTest: if( R%d %s R%d %s R%d ) goto lbl", + reg1, (arith==OP_Add ? "+" : "-"), regVal, + ((op==OP_Ge) ? ">=" : (op==OP_Le) ? "<=" : (op==OP_Gt) ? ">" : "<"), reg2 + )); + + /* If the BIGNULL flag is set for the ORDER BY, then it is required to + ** consider NULL values to be larger than all other values, instead of + ** the usual smaller. The VDBE opcodes OP_Ge and so on do not handle this + ** (and adding that capability causes a performance regression), so + ** instead if the BIGNULL flag is set then cases where either reg1 or + ** reg2 are NULL are handled separately in the following block. The code + ** generated is equivalent to: + ** + ** if( reg1 IS NULL ){ + ** if( op==OP_Ge ) goto lbl; + ** if( op==OP_Gt && reg2 IS NOT NULL ) goto lbl; + ** if( op==OP_Le && reg2 IS NULL ) goto lbl; + ** }else if( reg2 IS NULL ){ + ** if( op==OP_Le ) goto lbl; + ** } + ** + ** Additionally, if either reg1 or reg2 are NULL but the jump to lbl is + ** not taken, control jumps over the comparison operator coded below this + ** block. */ + if( pOrderBy->a[0].fg.sortFlags & KEYINFO_ORDER_BIGNULL ){ + /* This block runs if reg1 contains a NULL. */ + int addr = sqlite3VdbeAddOp1(v, OP_NotNull, reg1); VdbeCoverage(v); + switch( op ){ + case OP_Ge: + sqlite3VdbeAddOp2(v, OP_Goto, 0, lbl); + break; + case OP_Gt: + sqlite3VdbeAddOp2(v, OP_NotNull, reg2, lbl); + VdbeCoverage(v); + break; + case OP_Le: + sqlite3VdbeAddOp2(v, OP_IsNull, reg2, lbl); + VdbeCoverage(v); + break; + default: assert( op==OP_Lt ); /* no-op */ break; + } + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrDone); + + /* This block runs if reg1 is not NULL, but reg2 is. */ + sqlite3VdbeJumpHere(v, addr); + sqlite3VdbeAddOp2(v, OP_IsNull, reg2, + (op==OP_Gt || op==OP_Ge) ? addrDone : lbl); + VdbeCoverage(v); + } + + /* Register reg1 currently contains csr1.peerVal (the peer-value from csr1). + ** This block adds (or subtracts for DESC) the numeric value in regVal + ** from it. Or, if reg1 is not numeric (it is a NULL, a text value or a blob), + ** then leave reg1 as it is. In pseudo-code, this is implemented as: + ** + ** if( reg1>='' ) goto addrGe; + ** reg1 = reg1 +/- regVal + ** addrGe: + ** + ** Since all strings and blobs are greater-than-or-equal-to an empty string, + ** the add/subtract is skipped for these, as required. If reg1 is a NULL, + ** then the arithmetic is performed, but since adding or subtracting from + ** NULL is always NULL anyway, this case is handled as required too. */ + sqlite3VdbeAddOp4(v, OP_String8, 0, regString, 0, "", P4_STATIC); + addrGe = sqlite3VdbeAddOp3(v, OP_Ge, regString, 0, reg1); + VdbeCoverage(v); + if( (op==OP_Ge && arith==OP_Add) || (op==OP_Le && arith==OP_Subtract) ){ + sqlite3VdbeAddOp3(v, op, reg2, lbl, reg1); VdbeCoverage(v); + } + sqlite3VdbeAddOp3(v, arith, regVal, reg1, reg1); + sqlite3VdbeJumpHere(v, addrGe); + + /* Compare registers reg2 and reg1, taking the jump if required. Note that + ** control skips over this test if the BIGNULL flag is set and either + ** reg1 or reg2 contain a NULL value. */ + sqlite3VdbeAddOp3(v, op, reg2, lbl, reg1); VdbeCoverage(v); + pColl = sqlite3ExprNNCollSeq(pParse, pOrderBy->a[0].pExpr); + sqlite3VdbeAppendP4(v, (void*)pColl, P4_COLLSEQ); + sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); + sqlite3VdbeResolveLabel(v, addrDone); + + assert( op==OP_Ge || op==OP_Gt || op==OP_Lt || op==OP_Le ); + testcase(op==OP_Ge); VdbeCoverageIf(v, op==OP_Ge); + testcase(op==OP_Lt); VdbeCoverageIf(v, op==OP_Lt); + testcase(op==OP_Le); VdbeCoverageIf(v, op==OP_Le); + testcase(op==OP_Gt); VdbeCoverageIf(v, op==OP_Gt); + sqlite3ReleaseTempReg(pParse, reg1); + sqlite3ReleaseTempReg(pParse, reg2); + + VdbeModuleComment((v, "CodeRangeTest: end")); +} + +/* +** Helper function for sqlite3WindowCodeStep(). Each call to this function +** generates VM code for a single RETURN_ROW, AGGSTEP or AGGINVERSE +** operation. Refer to the header comment for sqlite3WindowCodeStep() for +** details. +*/ +static int windowCodeOp( + WindowCodeArg *p, /* Context object */ + int op, /* WINDOW_RETURN_ROW, AGGSTEP or AGGINVERSE */ + int regCountdown, /* Register for OP_IfPos countdown */ + int jumpOnEof /* Jump here if stepped cursor reaches EOF */ +){ + int csr, reg; + Parse *pParse = p->pParse; + Window *pMWin = p->pMWin; + int ret = 0; + Vdbe *v = p->pVdbe; + int addrContinue = 0; + int bPeer = (pMWin->eFrmType!=TK_ROWS); + + int lblDone = sqlite3VdbeMakeLabel(pParse); + int addrNextRange = 0; + + /* Special case - WINDOW_AGGINVERSE is always a no-op if the frame + ** starts with UNBOUNDED PRECEDING. */ + if( op==WINDOW_AGGINVERSE && pMWin->eStart==TK_UNBOUNDED ){ + assert( regCountdown==0 && jumpOnEof==0 ); + return 0; + } + + if( regCountdown>0 ){ + if( pMWin->eFrmType==TK_RANGE ){ + addrNextRange = sqlite3VdbeCurrentAddr(v); + assert( op==WINDOW_AGGINVERSE || op==WINDOW_AGGSTEP ); + if( op==WINDOW_AGGINVERSE ){ + if( pMWin->eStart==TK_FOLLOWING ){ + windowCodeRangeTest( + p, OP_Le, p->current.csr, regCountdown, p->start.csr, lblDone + ); + }else{ + windowCodeRangeTest( + p, OP_Ge, p->start.csr, regCountdown, p->current.csr, lblDone + ); + } + }else{ + windowCodeRangeTest( + p, OP_Gt, p->end.csr, regCountdown, p->current.csr, lblDone + ); + } + }else{ + sqlite3VdbeAddOp3(v, OP_IfPos, regCountdown, lblDone, 1); + VdbeCoverage(v); + } + } + + if( op==WINDOW_RETURN_ROW && pMWin->regStartRowid==0 ){ + windowAggFinal(p, 0); + } + addrContinue = sqlite3VdbeCurrentAddr(v); + + /* If this is a (RANGE BETWEEN a FOLLOWING AND b FOLLOWING) or + ** (RANGE BETWEEN b PRECEDING AND a PRECEDING) frame, ensure the + ** start cursor does not advance past the end cursor within the + ** temporary table. It otherwise might, if (a>b). Also ensure that, + ** if the input cursor is still finding new rows, that the end + ** cursor does not go past it to EOF. */ + if( pMWin->eStart==pMWin->eEnd && regCountdown + && pMWin->eFrmType==TK_RANGE + ){ + int regRowid1 = sqlite3GetTempReg(pParse); + int regRowid2 = sqlite3GetTempReg(pParse); + if( op==WINDOW_AGGINVERSE ){ + sqlite3VdbeAddOp2(v, OP_Rowid, p->start.csr, regRowid1); + sqlite3VdbeAddOp2(v, OP_Rowid, p->end.csr, regRowid2); + sqlite3VdbeAddOp3(v, OP_Ge, regRowid2, lblDone, regRowid1); + VdbeCoverage(v); + }else if( p->regRowid ){ + sqlite3VdbeAddOp2(v, OP_Rowid, p->end.csr, regRowid1); + sqlite3VdbeAddOp3(v, OP_Ge, p->regRowid, lblDone, regRowid1); + VdbeCoverageNeverNull(v); + } + sqlite3ReleaseTempReg(pParse, regRowid1); + sqlite3ReleaseTempReg(pParse, regRowid2); + assert( pMWin->eStart==TK_PRECEDING || pMWin->eStart==TK_FOLLOWING ); + } + + switch( op ){ + case WINDOW_RETURN_ROW: + csr = p->current.csr; + reg = p->current.reg; + windowReturnOneRow(p); + break; + + case WINDOW_AGGINVERSE: + csr = p->start.csr; + reg = p->start.reg; + if( pMWin->regStartRowid ){ + assert( pMWin->regEndRowid ); + sqlite3VdbeAddOp2(v, OP_AddImm, pMWin->regStartRowid, 1); + }else{ + windowAggStep(p, pMWin, csr, 1, p->regArg); + } + break; + + default: + assert( op==WINDOW_AGGSTEP ); + csr = p->end.csr; + reg = p->end.reg; + if( pMWin->regStartRowid ){ + assert( pMWin->regEndRowid ); + sqlite3VdbeAddOp2(v, OP_AddImm, pMWin->regEndRowid, 1); + }else{ + windowAggStep(p, pMWin, csr, 0, p->regArg); + } + break; + } + + if( op==p->eDelete ){ + sqlite3VdbeAddOp1(v, OP_Delete, csr); + sqlite3VdbeChangeP5(v, OPFLAG_SAVEPOSITION); + } + + if( jumpOnEof ){ + sqlite3VdbeAddOp2(v, OP_Next, csr, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); + ret = sqlite3VdbeAddOp0(v, OP_Goto); + }else{ + sqlite3VdbeAddOp2(v, OP_Next, csr, sqlite3VdbeCurrentAddr(v)+1+bPeer); + VdbeCoverage(v); + if( bPeer ){ + sqlite3VdbeAddOp2(v, OP_Goto, 0, lblDone); + } + } + + if( bPeer ){ + int nReg = (pMWin->pOrderBy ? pMWin->pOrderBy->nExpr : 0); + int regTmp = (nReg ? sqlite3GetTempRange(pParse, nReg) : 0); + windowReadPeerValues(p, csr, regTmp); + windowIfNewPeer(pParse, pMWin->pOrderBy, regTmp, reg, addrContinue); + sqlite3ReleaseTempRange(pParse, regTmp, nReg); + } + + if( addrNextRange ){ + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrNextRange); + } + sqlite3VdbeResolveLabel(v, lblDone); + return ret; +} + + +/* +** Allocate and return a duplicate of the Window object indicated by the +** third argument. Set the Window.pOwner field of the new object to +** pOwner. +*/ +SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p){ + Window *pNew = 0; + if( ALWAYS(p) ){ + pNew = sqlite3DbMallocZero(db, sizeof(Window)); + if( pNew ){ + pNew->zName = sqlite3DbStrDup(db, p->zName); + pNew->zBase = sqlite3DbStrDup(db, p->zBase); + pNew->pFilter = sqlite3ExprDup(db, p->pFilter, 0); + pNew->pWFunc = p->pWFunc; + pNew->pPartition = sqlite3ExprListDup(db, p->pPartition, 0); + pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, 0); + pNew->eFrmType = p->eFrmType; + pNew->eEnd = p->eEnd; + pNew->eStart = p->eStart; + pNew->eExclude = p->eExclude; + pNew->regResult = p->regResult; + pNew->regAccum = p->regAccum; + pNew->iArgCol = p->iArgCol; + pNew->iEphCsr = p->iEphCsr; + pNew->bExprArgs = p->bExprArgs; + pNew->pStart = sqlite3ExprDup(db, p->pStart, 0); + pNew->pEnd = sqlite3ExprDup(db, p->pEnd, 0); + pNew->pOwner = pOwner; + pNew->bImplicitFrame = p->bImplicitFrame; + } + } + return pNew; +} + +/* +** Return a copy of the linked list of Window objects passed as the +** second argument. +*/ +SQLITE_PRIVATE Window *sqlite3WindowListDup(sqlite3 *db, Window *p){ + Window *pWin; + Window *pRet = 0; + Window **pp = &pRet; + + for(pWin=p; pWin; pWin=pWin->pNextWin){ + *pp = sqlite3WindowDup(db, 0, pWin); + if( *pp==0 ) break; + pp = &((*pp)->pNextWin); + } + + return pRet; +} + +/* +** Return true if it can be determined at compile time that expression +** pExpr evaluates to a value that, when cast to an integer, is greater +** than zero. False otherwise. +** +** If an OOM error occurs, this function sets the Parse.db.mallocFailed +** flag and returns zero. +*/ +static int windowExprGtZero(Parse *pParse, Expr *pExpr){ + int ret = 0; + sqlite3 *db = pParse->db; + sqlite3_value *pVal = 0; + sqlite3ValueFromExpr(db, pExpr, db->enc, SQLITE_AFF_NUMERIC, &pVal); + if( pVal && sqlite3_value_int(pVal)>0 ){ + ret = 1; + } + sqlite3ValueFree(pVal); + return ret; +} + +/* +** sqlite3WhereBegin() has already been called for the SELECT statement +** passed as the second argument when this function is invoked. It generates +** code to populate the Window.regResult register for each window function +** and invoke the sub-routine at instruction addrGosub once for each row. +** sqlite3WhereEnd() is always called before returning. +** +** This function handles several different types of window frames, which +** require slightly different processing. The following pseudo code is +** used to implement window frames of the form: +** +** ROWS BETWEEN PRECEDING AND FOLLOWING +** +** Other window frame types use variants of the following: +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** +** if( first row of partition ){ +** // Rewind three cursors, all open on the eph table. +** Rewind(csrEnd); +** Rewind(csrStart); +** Rewind(csrCurrent); +** +** regEnd = // FOLLOWING expression +** regStart = // PRECEDING expression +** }else{ +** // First time this branch is taken, the eph table contains two +** // rows. The first row in the partition, which all three cursors +** // currently point to, and the following row. +** AGGSTEP +** if( (regEnd--)<=0 ){ +** RETURN_ROW +** if( (regStart--)<=0 ){ +** AGGINVERSE +** } +** } +** } +** } +** flush: +** AGGSTEP +** while( 1 ){ +** RETURN ROW +** if( csrCurrent is EOF ) break; +** if( (regStart--)<=0 ){ +** AggInverse(csrStart) +** Next(csrStart) +** } +** } +** +** The pseudo-code above uses the following shorthand: +** +** AGGSTEP: invoke the aggregate xStep() function for each window function +** with arguments read from the current row of cursor csrEnd, then +** step cursor csrEnd forward one row (i.e. sqlite3BtreeNext()). +** +** RETURN_ROW: return a row to the caller based on the contents of the +** current row of csrCurrent and the current state of all +** aggregates. Then step cursor csrCurrent forward one row. +** +** AGGINVERSE: invoke the aggregate xInverse() function for each window +** functions with arguments read from the current row of cursor +** csrStart. Then step csrStart forward one row. +** +** There are two other ROWS window frames that are handled significantly +** differently from the above - "BETWEEN PRECEDING AND PRECEDING" +** and "BETWEEN FOLLOWING AND FOLLOWING". These are special +** cases because they change the order in which the three cursors (csrStart, +** csrCurrent and csrEnd) iterate through the ephemeral table. Cases that +** use UNBOUNDED or CURRENT ROW are much simpler variations on one of these +** three. +** +** ROWS BETWEEN PRECEDING AND PRECEDING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** }else{ +** if( (regEnd--)<=0 ){ +** AGGSTEP +** } +** RETURN_ROW +** if( (regStart--)<=0 ){ +** AGGINVERSE +** } +** } +** } +** flush: +** if( (regEnd--)<=0 ){ +** AGGSTEP +** } +** RETURN_ROW +** +** +** ROWS BETWEEN FOLLOWING AND FOLLOWING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = regEnd - +** }else{ +** AGGSTEP +** if( (regEnd--)<=0 ){ +** RETURN_ROW +** } +** if( (regStart--)<=0 ){ +** AGGINVERSE +** } +** } +** } +** flush: +** AGGSTEP +** while( 1 ){ +** if( (regEnd--)<=0 ){ +** RETURN_ROW +** if( eof ) break; +** } +** if( (regStart--)<=0 ){ +** AGGINVERSE +** if( eof ) break +** } +** } +** while( !eof csrCurrent ){ +** RETURN_ROW +** } +** +** For the most part, the patterns above are adapted to support UNBOUNDED by +** assuming that it is equivalent to "infinity PRECEDING/FOLLOWING" and +** CURRENT ROW by assuming that it is equivalent to "0 PRECEDING/FOLLOWING". +** This is optimized of course - branches that will never be taken and +** conditions that are always true are omitted from the VM code. The only +** exceptional case is: +** +** ROWS BETWEEN FOLLOWING AND UNBOUNDED FOLLOWING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regStart = +** }else{ +** AGGSTEP +** } +** } +** flush: +** AGGSTEP +** while( 1 ){ +** if( (regStart--)<=0 ){ +** AGGINVERSE +** if( eof ) break +** } +** RETURN_ROW +** } +** while( !eof csrCurrent ){ +** RETURN_ROW +** } +** +** Also requiring special handling are the cases: +** +** ROWS BETWEEN PRECEDING AND PRECEDING +** ROWS BETWEEN FOLLOWING AND FOLLOWING +** +** when (expr1 < expr2). This is detected at runtime, not by this function. +** To handle this case, the pseudo-code programs depicted above are modified +** slightly to be: +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** if( regEnd < regStart ){ +** RETURN_ROW +** delete eph table contents +** continue +** } +** ... +** +** The new "continue" statement in the above jumps to the next iteration +** of the outer loop - the one started by sqlite3WhereBegin(). +** +** The various GROUPS cases are implemented using the same patterns as +** ROWS. The VM code is modified slightly so that: +** +** 1. The else branch in the main loop is only taken if the row just +** added to the ephemeral table is the start of a new group. In +** other words, it becomes: +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** }else if( new group ){ +** ... +** } +** } +** +** 2. Instead of processing a single row, each RETURN_ROW, AGGSTEP or +** AGGINVERSE step processes the current row of the relevant cursor and +** all subsequent rows belonging to the same group. +** +** RANGE window frames are a little different again. As for GROUPS, the +** main loop runs once per group only. And RETURN_ROW, AGGSTEP and AGGINVERSE +** deal in groups instead of rows. As for ROWS and GROUPS, there are three +** basic cases: +** +** RANGE BETWEEN PRECEDING AND FOLLOWING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** }else{ +** AGGSTEP +** while( (csrCurrent.key + regEnd) < csrEnd.key ){ +** RETURN_ROW +** while( csrStart.key + regStart) < csrCurrent.key ){ +** AGGINVERSE +** } +** } +** } +** } +** flush: +** AGGSTEP +** while( 1 ){ +** RETURN ROW +** if( csrCurrent is EOF ) break; +** while( csrStart.key + regStart) < csrCurrent.key ){ +** AGGINVERSE +** } +** } +** } +** +** In the above notation, "csr.key" means the current value of the ORDER BY +** expression (there is only ever 1 for a RANGE that uses an FOLLOWING +** or PRECEDING AND PRECEDING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** }else{ +** while( (csrEnd.key + regEnd) <= csrCurrent.key ){ +** AGGSTEP +** } +** while( (csrStart.key + regStart) < csrCurrent.key ){ +** AGGINVERSE +** } +** RETURN_ROW +** } +** } +** flush: +** while( (csrEnd.key + regEnd) <= csrCurrent.key ){ +** AGGSTEP +** } +** while( (csrStart.key + regStart) < csrCurrent.key ){ +** AGGINVERSE +** } +** RETURN_ROW +** +** RANGE BETWEEN FOLLOWING AND FOLLOWING +** +** ... loop started by sqlite3WhereBegin() ... +** if( new partition ){ +** Gosub flush +** } +** Insert new row into eph table. +** if( first row of partition ){ +** Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent) +** regEnd = +** regStart = +** }else{ +** AGGSTEP +** while( (csrCurrent.key + regEnd) < csrEnd.key ){ +** while( (csrCurrent.key + regStart) > csrStart.key ){ +** AGGINVERSE +** } +** RETURN_ROW +** } +** } +** } +** flush: +** AGGSTEP +** while( 1 ){ +** while( (csrCurrent.key + regStart) > csrStart.key ){ +** AGGINVERSE +** if( eof ) break "while( 1 )" loop. +** } +** RETURN_ROW +** } +** while( !eof csrCurrent ){ +** RETURN_ROW +** } +** +** The text above leaves out many details. Refer to the code and comments +** below for a more complete picture. +*/ +SQLITE_PRIVATE void sqlite3WindowCodeStep( + Parse *pParse, /* Parse context */ + Select *p, /* Rewritten SELECT statement */ + WhereInfo *pWInfo, /* Context returned by sqlite3WhereBegin() */ + int regGosub, /* Register for OP_Gosub */ + int addrGosub /* OP_Gosub here to return each row */ +){ + Window *pMWin = p->pWin; + ExprList *pOrderBy = pMWin->pOrderBy; + Vdbe *v = sqlite3GetVdbe(pParse); + int csrWrite; /* Cursor used to write to eph. table */ + int csrInput = p->pSrc->a[0].iCursor; /* Cursor of sub-select */ + int nInput = p->pSrc->a[0].pTab->nCol; /* Number of cols returned by sub */ + int iInput; /* To iterate through sub cols */ + int addrNe; /* Address of OP_Ne */ + int addrGosubFlush = 0; /* Address of OP_Gosub to flush: */ + int addrInteger = 0; /* Address of OP_Integer */ + int addrEmpty; /* Address of OP_Rewind in flush: */ + int regNew; /* Array of registers holding new input row */ + int regRecord; /* regNew array in record form */ + int regNewPeer = 0; /* Peer values for new row (part of regNew) */ + int regPeer = 0; /* Peer values for current row */ + int regFlushPart = 0; /* Register for "Gosub flush_partition" */ + WindowCodeArg s; /* Context object for sub-routines */ + int lblWhereEnd; /* Label just before sqlite3WhereEnd() code */ + int regStart = 0; /* Value of PRECEDING */ + int regEnd = 0; /* Value of FOLLOWING */ + + assert( pMWin->eStart==TK_PRECEDING || pMWin->eStart==TK_CURRENT + || pMWin->eStart==TK_FOLLOWING || pMWin->eStart==TK_UNBOUNDED + ); + assert( pMWin->eEnd==TK_FOLLOWING || pMWin->eEnd==TK_CURRENT + || pMWin->eEnd==TK_UNBOUNDED || pMWin->eEnd==TK_PRECEDING + ); + assert( pMWin->eExclude==0 || pMWin->eExclude==TK_CURRENT + || pMWin->eExclude==TK_GROUP || pMWin->eExclude==TK_TIES + || pMWin->eExclude==TK_NO + ); + + lblWhereEnd = sqlite3VdbeMakeLabel(pParse); + + /* Fill in the context object */ + memset(&s, 0, sizeof(WindowCodeArg)); + s.pParse = pParse; + s.pMWin = pMWin; + s.pVdbe = v; + s.regGosub = regGosub; + s.addrGosub = addrGosub; + s.current.csr = pMWin->iEphCsr; + csrWrite = s.current.csr+1; + s.start.csr = s.current.csr+2; + s.end.csr = s.current.csr+3; + + /* Figure out when rows may be deleted from the ephemeral table. There + ** are four options - they may never be deleted (eDelete==0), they may + ** be deleted as soon as they are no longer part of the window frame + ** (eDelete==WINDOW_AGGINVERSE), they may be deleted as after the row + ** has been returned to the caller (WINDOW_RETURN_ROW), or they may + ** be deleted after they enter the frame (WINDOW_AGGSTEP). */ + switch( pMWin->eStart ){ + case TK_FOLLOWING: + if( pMWin->eFrmType!=TK_RANGE + && windowExprGtZero(pParse, pMWin->pStart) + ){ + s.eDelete = WINDOW_RETURN_ROW; + } + break; + case TK_UNBOUNDED: + if( windowCacheFrame(pMWin)==0 ){ + if( pMWin->eEnd==TK_PRECEDING ){ + if( pMWin->eFrmType!=TK_RANGE + && windowExprGtZero(pParse, pMWin->pEnd) + ){ + s.eDelete = WINDOW_AGGSTEP; + } + }else{ + s.eDelete = WINDOW_RETURN_ROW; + } + } + break; + default: + s.eDelete = WINDOW_AGGINVERSE; + break; + } + + /* Allocate registers for the array of values from the sub-query, the + ** same values in record form, and the rowid used to insert said record + ** into the ephemeral table. */ + regNew = pParse->nMem+1; + pParse->nMem += nInput; + regRecord = ++pParse->nMem; + s.regRowid = ++pParse->nMem; + + /* If the window frame contains an " PRECEDING" or " FOLLOWING" + ** clause, allocate registers to store the results of evaluating each + ** . */ + if( pMWin->eStart==TK_PRECEDING || pMWin->eStart==TK_FOLLOWING ){ + regStart = ++pParse->nMem; + } + if( pMWin->eEnd==TK_PRECEDING || pMWin->eEnd==TK_FOLLOWING ){ + regEnd = ++pParse->nMem; + } + + /* If this is not a "ROWS BETWEEN ..." frame, then allocate arrays of + ** registers to store copies of the ORDER BY expressions (peer values) + ** for the main loop, and for each cursor (start, current and end). */ + if( pMWin->eFrmType!=TK_ROWS ){ + int nPeer = (pOrderBy ? pOrderBy->nExpr : 0); + regNewPeer = regNew + pMWin->nBufferCol; + if( pMWin->pPartition ) regNewPeer += pMWin->pPartition->nExpr; + regPeer = pParse->nMem+1; pParse->nMem += nPeer; + s.start.reg = pParse->nMem+1; pParse->nMem += nPeer; + s.current.reg = pParse->nMem+1; pParse->nMem += nPeer; + s.end.reg = pParse->nMem+1; pParse->nMem += nPeer; + } + + /* Load the column values for the row returned by the sub-select + ** into an array of registers starting at regNew. Assemble them into + ** a record in register regRecord. */ + for(iInput=0; iInputpPartition ){ + int addr; + ExprList *pPart = pMWin->pPartition; + int nPart = pPart->nExpr; + int regNewPart = regNew + pMWin->nBufferCol; + KeyInfo *pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pPart, 0, 0); + + regFlushPart = ++pParse->nMem; + addr = sqlite3VdbeAddOp3(v, OP_Compare, regNewPart, pMWin->regPart, nPart); + sqlite3VdbeAppendP4(v, (void*)pKeyInfo, P4_KEYINFO); + sqlite3VdbeAddOp3(v, OP_Jump, addr+2, addr+4, addr+2); + VdbeCoverageEqNe(v); + addrGosubFlush = sqlite3VdbeAddOp1(v, OP_Gosub, regFlushPart); + VdbeComment((v, "call flush_partition")); + sqlite3VdbeAddOp3(v, OP_Copy, regNewPart, pMWin->regPart, nPart-1); + } + + /* Insert the new row into the ephemeral table */ + sqlite3VdbeAddOp2(v, OP_NewRowid, csrWrite, s.regRowid); + sqlite3VdbeAddOp3(v, OP_Insert, csrWrite, regRecord, s.regRowid); + addrNe = sqlite3VdbeAddOp3(v, OP_Ne, pMWin->regOne, 0, s.regRowid); + VdbeCoverageNeverNull(v); + + /* This block is run for the first row of each partition */ + s.regArg = windowInitAccum(pParse, pMWin); + + if( regStart ){ + sqlite3ExprCode(pParse, pMWin->pStart, regStart); + windowCheckValue(pParse, regStart, 0 + (pMWin->eFrmType==TK_RANGE?3:0)); + } + if( regEnd ){ + sqlite3ExprCode(pParse, pMWin->pEnd, regEnd); + windowCheckValue(pParse, regEnd, 1 + (pMWin->eFrmType==TK_RANGE?3:0)); + } + + if( pMWin->eFrmType!=TK_RANGE && pMWin->eStart==pMWin->eEnd && regStart ){ + int op = ((pMWin->eStart==TK_FOLLOWING) ? OP_Ge : OP_Le); + int addrGe = sqlite3VdbeAddOp3(v, op, regStart, 0, regEnd); + VdbeCoverageNeverNullIf(v, op==OP_Ge); /* NeverNull because bound */ + VdbeCoverageNeverNullIf(v, op==OP_Le); /* values previously checked */ + windowAggFinal(&s, 0); + sqlite3VdbeAddOp1(v, OP_Rewind, s.current.csr); + windowReturnOneRow(&s); + sqlite3VdbeAddOp1(v, OP_ResetSorter, s.current.csr); + sqlite3VdbeAddOp2(v, OP_Goto, 0, lblWhereEnd); + sqlite3VdbeJumpHere(v, addrGe); + } + if( pMWin->eStart==TK_FOLLOWING && pMWin->eFrmType!=TK_RANGE && regEnd ){ + assert( pMWin->eEnd==TK_FOLLOWING ); + sqlite3VdbeAddOp3(v, OP_Subtract, regStart, regEnd, regStart); + } + + if( pMWin->eStart!=TK_UNBOUNDED ){ + sqlite3VdbeAddOp1(v, OP_Rewind, s.start.csr); + } + sqlite3VdbeAddOp1(v, OP_Rewind, s.current.csr); + sqlite3VdbeAddOp1(v, OP_Rewind, s.end.csr); + if( regPeer && pOrderBy ){ + sqlite3VdbeAddOp3(v, OP_Copy, regNewPeer, regPeer, pOrderBy->nExpr-1); + sqlite3VdbeAddOp3(v, OP_Copy, regPeer, s.start.reg, pOrderBy->nExpr-1); + sqlite3VdbeAddOp3(v, OP_Copy, regPeer, s.current.reg, pOrderBy->nExpr-1); + sqlite3VdbeAddOp3(v, OP_Copy, regPeer, s.end.reg, pOrderBy->nExpr-1); + } + + sqlite3VdbeAddOp2(v, OP_Goto, 0, lblWhereEnd); + + sqlite3VdbeJumpHere(v, addrNe); + + /* Beginning of the block executed for the second and subsequent rows. */ + if( regPeer ){ + windowIfNewPeer(pParse, pOrderBy, regNewPeer, regPeer, lblWhereEnd); + } + if( pMWin->eStart==TK_FOLLOWING ){ + windowCodeOp(&s, WINDOW_AGGSTEP, 0, 0); + if( pMWin->eEnd!=TK_UNBOUNDED ){ + if( pMWin->eFrmType==TK_RANGE ){ + int lbl = sqlite3VdbeMakeLabel(pParse); + int addrNext = sqlite3VdbeCurrentAddr(v); + windowCodeRangeTest(&s, OP_Ge, s.current.csr, regEnd, s.end.csr, lbl); + windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 0); + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrNext); + sqlite3VdbeResolveLabel(v, lbl); + }else{ + windowCodeOp(&s, WINDOW_RETURN_ROW, regEnd, 0); + windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + } + } + }else + if( pMWin->eEnd==TK_PRECEDING ){ + int bRPS = (pMWin->eStart==TK_PRECEDING && pMWin->eFrmType==TK_RANGE); + windowCodeOp(&s, WINDOW_AGGSTEP, regEnd, 0); + if( bRPS ) windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 0); + if( !bRPS ) windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + }else{ + int addr = 0; + windowCodeOp(&s, WINDOW_AGGSTEP, 0, 0); + if( pMWin->eEnd!=TK_UNBOUNDED ){ + if( pMWin->eFrmType==TK_RANGE ){ + int lbl = 0; + addr = sqlite3VdbeCurrentAddr(v); + if( regEnd ){ + lbl = sqlite3VdbeMakeLabel(pParse); + windowCodeRangeTest(&s, OP_Ge, s.current.csr, regEnd, s.end.csr, lbl); + } + windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 0); + windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + if( regEnd ){ + sqlite3VdbeAddOp2(v, OP_Goto, 0, addr); + sqlite3VdbeResolveLabel(v, lbl); + } + }else{ + if( regEnd ){ + addr = sqlite3VdbeAddOp3(v, OP_IfPos, regEnd, 0, 1); + VdbeCoverage(v); + } + windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 0); + windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + if( regEnd ) sqlite3VdbeJumpHere(v, addr); + } + } + } + + /* End of the main input loop */ + sqlite3VdbeResolveLabel(v, lblWhereEnd); + sqlite3WhereEnd(pWInfo); + + /* Fall through */ + if( pMWin->pPartition ){ + addrInteger = sqlite3VdbeAddOp2(v, OP_Integer, 0, regFlushPart); + sqlite3VdbeJumpHere(v, addrGosubFlush); + } + + s.regRowid = 0; + addrEmpty = sqlite3VdbeAddOp1(v, OP_Rewind, csrWrite); + VdbeCoverage(v); + if( pMWin->eEnd==TK_PRECEDING ){ + int bRPS = (pMWin->eStart==TK_PRECEDING && pMWin->eFrmType==TK_RANGE); + windowCodeOp(&s, WINDOW_AGGSTEP, regEnd, 0); + if( bRPS ) windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 0); + }else if( pMWin->eStart==TK_FOLLOWING ){ + int addrStart; + int addrBreak1; + int addrBreak2; + int addrBreak3; + windowCodeOp(&s, WINDOW_AGGSTEP, 0, 0); + if( pMWin->eFrmType==TK_RANGE ){ + addrStart = sqlite3VdbeCurrentAddr(v); + addrBreak2 = windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 1); + addrBreak1 = windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 1); + }else + if( pMWin->eEnd==TK_UNBOUNDED ){ + addrStart = sqlite3VdbeCurrentAddr(v); + addrBreak1 = windowCodeOp(&s, WINDOW_RETURN_ROW, regStart, 1); + addrBreak2 = windowCodeOp(&s, WINDOW_AGGINVERSE, 0, 1); + }else{ + assert( pMWin->eEnd==TK_FOLLOWING ); + addrStart = sqlite3VdbeCurrentAddr(v); + addrBreak1 = windowCodeOp(&s, WINDOW_RETURN_ROW, regEnd, 1); + addrBreak2 = windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 1); + } + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrStart); + sqlite3VdbeJumpHere(v, addrBreak2); + addrStart = sqlite3VdbeCurrentAddr(v); + addrBreak3 = windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 1); + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrStart); + sqlite3VdbeJumpHere(v, addrBreak1); + sqlite3VdbeJumpHere(v, addrBreak3); + }else{ + int addrBreak; + int addrStart; + windowCodeOp(&s, WINDOW_AGGSTEP, 0, 0); + addrStart = sqlite3VdbeCurrentAddr(v); + addrBreak = windowCodeOp(&s, WINDOW_RETURN_ROW, 0, 1); + windowCodeOp(&s, WINDOW_AGGINVERSE, regStart, 0); + sqlite3VdbeAddOp2(v, OP_Goto, 0, addrStart); + sqlite3VdbeJumpHere(v, addrBreak); + } + sqlite3VdbeJumpHere(v, addrEmpty); + + sqlite3VdbeAddOp1(v, OP_ResetSorter, s.current.csr); + if( pMWin->pPartition ){ + if( pMWin->regStartRowid ){ + sqlite3VdbeAddOp2(v, OP_Integer, 1, pMWin->regStartRowid); + sqlite3VdbeAddOp2(v, OP_Integer, 0, pMWin->regEndRowid); + } + sqlite3VdbeChangeP1(v, addrInteger, sqlite3VdbeCurrentAddr(v)); + sqlite3VdbeAddOp1(v, OP_Return, regFlushPart); + } +} + +#endif /* SQLITE_OMIT_WINDOWFUNC */ + +/************** End of window.c **********************************************/ +/************** Begin file parse.c *******************************************/ +/* This file is automatically generated by Lemon from input grammar +** source file "parse.y". +*/ +/* +** 2001-09-15 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This file contains SQLite's SQL parser. +** +** The canonical source code to this file ("parse.y") is a Lemon grammar +** file that specifies the input grammar and actions to take while parsing. +** That input file is processed by Lemon to generate a C-language +** implementation of a parser for the given grammar. You might be reading +** this comment as part of the translated C-code. Edits should be made +** to the original parse.y sources. +*/ /* #include "sqliteInt.h" */ @@ -141456,15 +169289,39 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ */ struct TrigEvent { int a; IdList * b; }; +struct FrameBound { int eType; Expr *pExpr; }; + /* ** Disable lookaside memory allocation for objects that might be ** shared across database connections. */ static void disableLookaside(Parse *pParse){ + sqlite3 *db = pParse->db; pParse->disableLookaside++; - pParse->db->lookaside.bDisable++; + DisableLookaside; } +#if !defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) \ + && defined(SQLITE_UDL_CAPABLE_PARSER) +/* +** Issue an error message if an ORDER BY or LIMIT clause occurs on an +** UPDATE or DELETE statement. +*/ +static void updateDeleteLimitError( + Parse *pParse, + ExprList *pOrderBy, + Expr *pLimit +){ + if( pOrderBy ){ + sqlite3ErrorMsg(pParse, "syntax error near \"ORDER BY\""); + }else{ + sqlite3ErrorMsg(pParse, "syntax error near \"LIMIT\""); + } + sqlite3ExprListDelete(pParse->db, pOrderBy); + sqlite3ExprDelete(pParse->db, pLimit); +} +#endif /* SQLITE_ENABLE_UPDATE_DELETE_LIMIT */ + /* ** For a compound SELECT statement, make sure p->pPrior->pNext==p for @@ -141472,14 +169329,25 @@ static void disableLookaside(Parse *pParse){ ** SQLITE_LIMIT_COMPOUND_SELECT. */ static void parserDoubleLinkSelect(Parse *pParse, Select *p){ + assert( p!=0 ); if( p->pPrior ){ - Select *pNext = 0, *pLoop; - int mxSelect, cnt = 0; - for(pLoop=p; pLoop; pNext=pLoop, pLoop=pLoop->pPrior, cnt++){ + Select *pNext = 0, *pLoop = p; + int mxSelect, cnt = 1; + while(1){ pLoop->pNext = pNext; pLoop->selFlags |= SF_Compound; + pNext = pLoop; + pLoop = pLoop->pPrior; + if( pLoop==0 ) break; + cnt++; + if( pLoop->pOrderBy || pLoop->pLimit ){ + sqlite3ErrorMsg(pParse,"%s clause should come after %s not before", + pLoop->pOrderBy!=0 ? "ORDER BY" : "LIMIT", + sqlite3SelectOpName(pNext->op)); + break; + } } - if( (p->selFlags & SF_MultiValue)==0 && + if( (p->selFlags & SF_MultiValue)==0 && (mxSelect = pParse->db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT])>0 && cnt>mxSelect ){ @@ -141488,37 +169356,60 @@ static void disableLookaside(Parse *pParse){ } } - - /* Construct a new Expr object from a single identifier. Use the - ** new Expr to populate pOut. Set the span of pOut to be the identifier - ** that created the expression. + /* Attach a With object describing the WITH clause to a Select + ** object describing the query for which the WITH clause is a prefix. */ + static Select *attachWithToSelect(Parse *pParse, Select *pSelect, With *pWith){ + if( pSelect ){ + pSelect->pWith = pWith; + parserDoubleLinkSelect(pParse, pSelect); + }else{ + sqlite3WithDelete(pParse->db, pWith); + } + return pSelect; + } + + + /* Construct a new Expr object from a single token */ static Expr *tokenExpr(Parse *pParse, int op, Token t){ Expr *p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)+t.n+1); if( p ){ - memset(p, 0, sizeof(Expr)); + /* memset(p, 0, sizeof(Expr)); */ p->op = (u8)op; + p->affExpr = 0; p->flags = EP_Leaf; - p->iAgg = -1; + ExprClearVVAProperties(p); + /* p->iAgg = -1; // Not required */ + p->pLeft = p->pRight = 0; + p->pAggInfo = 0; + memset(&p->x, 0, sizeof(p->x)); + memset(&p->y, 0, sizeof(p->y)); + p->op2 = 0; + p->iTable = 0; + p->iColumn = 0; p->u.zToken = (char*)&p[1]; memcpy(p->u.zToken, t.z, t.n); p->u.zToken[t.n] = 0; + p->w.iOfst = (int)(t.z - pParse->zTail); if( sqlite3Isquote(p->u.zToken[0]) ){ - if( p->u.zToken[0]=='"' ) p->flags |= EP_DblQuoted; - sqlite3Dequote(p->u.zToken); + sqlite3DequoteExpr(p); } #if SQLITE_MAX_EXPR_DEPTH>0 p->nHeight = 1; -#endif +#endif + if( IN_RENAME_OBJECT ){ + return (Expr*)sqlite3RenameTokenMap(pParse, (void*)p, &t); + } } return p; } + /* A routine to convert a binary TK_IS or TK_ISNOT expression into a ** unary TK_ISNULL or TK_NOTNULL expression. */ static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){ sqlite3 *db = pParse->db; - if( pA && pY && pY->op==TK_NULL ){ + if( pA && pY && pY->op==TK_NULL && !IN_RENAME_OBJECT ){ pA->op = (u8)op; sqlite3ExprDelete(db, pA->pRight); pA->pRight = 0; @@ -141547,12 +169438,200 @@ static void disableLookaside(Parse *pParse){ sqlite3ExprListSetName(pParse, p, pIdToken, 1); return p; } + +#if TK_SPAN>255 +# error too many tokens in the grammar +#endif /**************** End of %include directives **********************************/ -/* These constants specify the various numeric values for terminal symbols -** in a format understandable to "makeheaders". This section is blank unless -** "lemon" is run with the "-m" command-line option. -***************** Begin makeheaders token definitions *************************/ -/**************** End makeheaders token definitions ***************************/ +/* These constants specify the various numeric values for terminal symbols. +***************** Begin token definitions *************************************/ +#ifndef TK_SEMI +#define TK_SEMI 1 +#define TK_EXPLAIN 2 +#define TK_QUERY 3 +#define TK_PLAN 4 +#define TK_BEGIN 5 +#define TK_TRANSACTION 6 +#define TK_DEFERRED 7 +#define TK_IMMEDIATE 8 +#define TK_EXCLUSIVE 9 +#define TK_COMMIT 10 +#define TK_END 11 +#define TK_ROLLBACK 12 +#define TK_SAVEPOINT 13 +#define TK_RELEASE 14 +#define TK_TO 15 +#define TK_TABLE 16 +#define TK_CREATE 17 +#define TK_IF 18 +#define TK_NOT 19 +#define TK_EXISTS 20 +#define TK_TEMP 21 +#define TK_LP 22 +#define TK_RP 23 +#define TK_AS 24 +#define TK_COMMA 25 +#define TK_WITHOUT 26 +#define TK_ABORT 27 +#define TK_ACTION 28 +#define TK_AFTER 29 +#define TK_ANALYZE 30 +#define TK_ASC 31 +#define TK_ATTACH 32 +#define TK_BEFORE 33 +#define TK_BY 34 +#define TK_CASCADE 35 +#define TK_CAST 36 +#define TK_CONFLICT 37 +#define TK_DATABASE 38 +#define TK_DESC 39 +#define TK_DETACH 40 +#define TK_EACH 41 +#define TK_FAIL 42 +#define TK_OR 43 +#define TK_AND 44 +#define TK_IS 45 +#define TK_MATCH 46 +#define TK_LIKE_KW 47 +#define TK_BETWEEN 48 +#define TK_IN 49 +#define TK_ISNULL 50 +#define TK_NOTNULL 51 +#define TK_NE 52 +#define TK_EQ 53 +#define TK_GT 54 +#define TK_LE 55 +#define TK_LT 56 +#define TK_GE 57 +#define TK_ESCAPE 58 +#define TK_ID 59 +#define TK_COLUMNKW 60 +#define TK_DO 61 +#define TK_FOR 62 +#define TK_IGNORE 63 +#define TK_INITIALLY 64 +#define TK_INSTEAD 65 +#define TK_NO 66 +#define TK_KEY 67 +#define TK_OF 68 +#define TK_OFFSET 69 +#define TK_PRAGMA 70 +#define TK_RAISE 71 +#define TK_RECURSIVE 72 +#define TK_REPLACE 73 +#define TK_RESTRICT 74 +#define TK_ROW 75 +#define TK_ROWS 76 +#define TK_TRIGGER 77 +#define TK_VACUUM 78 +#define TK_VIEW 79 +#define TK_VIRTUAL 80 +#define TK_WITH 81 +#define TK_NULLS 82 +#define TK_FIRST 83 +#define TK_LAST 84 +#define TK_CURRENT 85 +#define TK_FOLLOWING 86 +#define TK_PARTITION 87 +#define TK_PRECEDING 88 +#define TK_RANGE 89 +#define TK_UNBOUNDED 90 +#define TK_EXCLUDE 91 +#define TK_GROUPS 92 +#define TK_OTHERS 93 +#define TK_TIES 94 +#define TK_GENERATED 95 +#define TK_ALWAYS 96 +#define TK_MATERIALIZED 97 +#define TK_REINDEX 98 +#define TK_RENAME 99 +#define TK_CTIME_KW 100 +#define TK_ANY 101 +#define TK_BITAND 102 +#define TK_BITOR 103 +#define TK_LSHIFT 104 +#define TK_RSHIFT 105 +#define TK_PLUS 106 +#define TK_MINUS 107 +#define TK_STAR 108 +#define TK_SLASH 109 +#define TK_REM 110 +#define TK_CONCAT 111 +#define TK_PTR 112 +#define TK_COLLATE 113 +#define TK_BITNOT 114 +#define TK_ON 115 +#define TK_INDEXED 116 +#define TK_STRING 117 +#define TK_JOIN_KW 118 +#define TK_CONSTRAINT 119 +#define TK_DEFAULT 120 +#define TK_NULL 121 +#define TK_PRIMARY 122 +#define TK_UNIQUE 123 +#define TK_CHECK 124 +#define TK_REFERENCES 125 +#define TK_AUTOINCR 126 +#define TK_INSERT 127 +#define TK_DELETE 128 +#define TK_UPDATE 129 +#define TK_SET 130 +#define TK_DEFERRABLE 131 +#define TK_FOREIGN 132 +#define TK_DROP 133 +#define TK_UNION 134 +#define TK_ALL 135 +#define TK_EXCEPT 136 +#define TK_INTERSECT 137 +#define TK_SELECT 138 +#define TK_VALUES 139 +#define TK_DISTINCT 140 +#define TK_DOT 141 +#define TK_FROM 142 +#define TK_JOIN 143 +#define TK_USING 144 +#define TK_ORDER 145 +#define TK_GROUP 146 +#define TK_HAVING 147 +#define TK_LIMIT 148 +#define TK_WHERE 149 +#define TK_RETURNING 150 +#define TK_INTO 151 +#define TK_NOTHING 152 +#define TK_FLOAT 153 +#define TK_BLOB 154 +#define TK_INTEGER 155 +#define TK_VARIABLE 156 +#define TK_CASE 157 +#define TK_WHEN 158 +#define TK_THEN 159 +#define TK_ELSE 160 +#define TK_INDEX 161 +#define TK_ALTER 162 +#define TK_ADD 163 +#define TK_WINDOW 164 +#define TK_OVER 165 +#define TK_FILTER 166 +#define TK_COLUMN 167 +#define TK_AGG_FUNCTION 168 +#define TK_AGG_COLUMN 169 +#define TK_TRUEFALSE 170 +#define TK_ISNOT 171 +#define TK_FUNCTION 172 +#define TK_UMINUS 173 +#define TK_UPLUS 174 +#define TK_TRUTH 175 +#define TK_REGISTER 176 +#define TK_VECTOR 177 +#define TK_SELECT_COLUMN 178 +#define TK_IF_NULL_ROW 179 +#define TK_ASTERISK 180 +#define TK_SPAN 181 +#define TK_ERROR 182 +#define TK_SPACE 183 +#define TK_ILLEGAL 184 +#endif +/**************** End token definitions ***************************************/ /* The next sections is a series of control #defines. ** various aspects of the generated parser. @@ -141577,7 +169656,7 @@ static void disableLookaside(Parse *pParse){ ** the minor type might be the name of the identifier. ** Each non-terminal can have a different minor type. ** Terminal symbols all have the same minor type, though. -** This macros defines the minor type for terminal +** This macros defines the minor type for terminal ** symbols. ** YYMINORTYPE is the data type used for all minor types. ** This is typically a union of many types, one of @@ -141609,26 +169688,32 @@ static void disableLookaside(Parse *pParse){ # define INTERFACE 1 #endif /************* Begin control #defines *****************************************/ -#define YYCODETYPE unsigned char -#define YYNOCODE 255 +#define YYCODETYPE unsigned short int +#define YYNOCODE 319 #define YYACTIONTYPE unsigned short int -#define YYWILDCARD 84 +#define YYWILDCARD 101 #define sqlite3ParserTOKENTYPE Token typedef union { int yyinit; sqlite3ParserTOKENTYPE yy0; - const char* yy36; - TriggerStep* yy47; - With* yy91; - struct {int value; int mask;} yy107; - Expr* yy182; - Upsert* yy198; - ExprList* yy232; - struct TrigEvent yy300; - Select* yy399; - SrcList* yy427; - int yy502; - IdList* yy510; + TriggerStep* yy33; + Window* yy41; + Select* yy47; + SrcList* yy131; + struct TrigEvent yy180; + struct {int value; int mask;} yy231; + IdList* yy254; + u32 yy285; + ExprList* yy322; + Cte* yy385; + int yy394; + Upsert* yy444; + u8 yy516; + With* yy521; + const char* yy522; + Expr* yy528; + OnOrUsing yy561; + struct FrameBound yy595; } YYMINORTYPE; #ifndef YYSTACKDEPTH #define YYSTACKDEPTH 100 @@ -141644,18 +169729,20 @@ typedef union { #define sqlite3ParserCTX_FETCH Parse *pParse=yypParser->pParse; #define sqlite3ParserCTX_STORE yypParser->pParse=pParse; #define YYFALLBACK 1 -#define YYNSTATE 490 -#define YYNRULE 341 -#define YYNTOKEN 145 -#define YY_MAX_SHIFT 489 -#define YY_MIN_SHIFTREDUCE 705 -#define YY_MAX_SHIFTREDUCE 1045 -#define YY_ERROR_ACTION 1046 -#define YY_ACCEPT_ACTION 1047 -#define YY_NO_ACTION 1048 -#define YY_MIN_REDUCE 1049 -#define YY_MAX_REDUCE 1389 +#define YYNSTATE 575 +#define YYNRULE 403 +#define YYNRULE_WITH_ACTION 338 +#define YYNTOKEN 185 +#define YY_MAX_SHIFT 574 +#define YY_MIN_SHIFTREDUCE 833 +#define YY_MAX_SHIFTREDUCE 1235 +#define YY_ERROR_ACTION 1236 +#define YY_ACCEPT_ACTION 1237 +#define YY_NO_ACTION 1238 +#define YY_MIN_REDUCE 1239 +#define YY_MAX_REDUCE 1641 /************* End control #defines *******************************************/ +#define YY_NLOOKAHEAD ((int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0]))) /* Define the yytestcase() macro to be a no-op if is not already defined ** otherwise. @@ -141673,7 +169760,7 @@ typedef union { /* Next are the tables used to determine what action to take based on the ** current state and lookahead token. These tables are used to implement ** functions that take a state number and lookahead value and return an -** action integer. +** action integer. ** ** Suppose the action integer is N. Then the action is determined as ** follows @@ -141720,509 +169807,624 @@ typedef union { ** yy_default[] Default action for each state. ** *********** Begin parsing tables **********************************************/ -#define YY_ACTTAB_COUNT (1657) +#define YY_ACTTAB_COUNT (2096) static const YYACTIONTYPE yy_action[] = { - /* 0 */ 349, 99, 96, 185, 99, 96, 185, 233, 1047, 1, - /* 10 */ 1, 489, 2, 1051, 484, 477, 477, 477, 260, 351, - /* 20 */ 121, 1310, 1120, 1120, 1178, 1115, 1094, 1128, 380, 380, - /* 30 */ 380, 835, 454, 410, 1115, 59, 59, 1357, 425, 836, - /* 40 */ 710, 711, 712, 106, 107, 97, 1023, 1023, 900, 903, - /* 50 */ 892, 892, 104, 104, 105, 105, 105, 105, 346, 238, - /* 60 */ 238, 99, 96, 185, 238, 238, 889, 889, 901, 904, - /* 70 */ 460, 481, 351, 99, 96, 185, 481, 347, 1177, 82, - /* 80 */ 388, 214, 182, 23, 194, 103, 103, 103, 103, 102, - /* 90 */ 102, 101, 101, 101, 100, 381, 106, 107, 97, 1023, - /* 100 */ 1023, 900, 903, 892, 892, 104, 104, 105, 105, 105, - /* 110 */ 105, 10, 385, 484, 24, 484, 1333, 489, 2, 1051, - /* 120 */ 335, 1043, 108, 893, 260, 351, 121, 99, 96, 185, - /* 130 */ 100, 381, 386, 1128, 59, 59, 59, 59, 103, 103, - /* 140 */ 103, 103, 102, 102, 101, 101, 101, 100, 381, 106, - /* 150 */ 107, 97, 1023, 1023, 900, 903, 892, 892, 104, 104, - /* 160 */ 105, 105, 105, 105, 360, 238, 238, 170, 170, 467, - /* 170 */ 455, 467, 464, 67, 381, 329, 169, 481, 351, 343, - /* 180 */ 338, 400, 1044, 68, 101, 101, 101, 100, 381, 393, - /* 190 */ 194, 103, 103, 103, 103, 102, 102, 101, 101, 101, - /* 200 */ 100, 381, 106, 107, 97, 1023, 1023, 900, 903, 892, - /* 210 */ 892, 104, 104, 105, 105, 105, 105, 483, 385, 103, - /* 220 */ 103, 103, 103, 102, 102, 101, 101, 101, 100, 381, - /* 230 */ 268, 351, 946, 946, 422, 296, 102, 102, 101, 101, - /* 240 */ 101, 100, 381, 861, 103, 103, 103, 103, 102, 102, - /* 250 */ 101, 101, 101, 100, 381, 106, 107, 97, 1023, 1023, - /* 260 */ 900, 903, 892, 892, 104, 104, 105, 105, 105, 105, - /* 270 */ 484, 983, 1383, 206, 1353, 1383, 438, 435, 434, 281, - /* 280 */ 396, 269, 1089, 941, 351, 1002, 433, 861, 743, 401, - /* 290 */ 282, 57, 57, 482, 145, 791, 791, 103, 103, 103, - /* 300 */ 103, 102, 102, 101, 101, 101, 100, 381, 106, 107, - /* 310 */ 97, 1023, 1023, 900, 903, 892, 892, 104, 104, 105, - /* 320 */ 105, 105, 105, 281, 1002, 1003, 1004, 206, 879, 319, - /* 330 */ 438, 435, 434, 981, 259, 474, 360, 351, 1118, 1118, - /* 340 */ 433, 736, 379, 378, 872, 1002, 1356, 322, 871, 766, - /* 350 */ 103, 103, 103, 103, 102, 102, 101, 101, 101, 100, - /* 360 */ 381, 106, 107, 97, 1023, 1023, 900, 903, 892, 892, - /* 370 */ 104, 104, 105, 105, 105, 105, 484, 801, 484, 871, - /* 380 */ 871, 873, 401, 282, 1002, 1003, 1004, 1030, 360, 1030, - /* 390 */ 351, 983, 1384, 213, 880, 1384, 145, 59, 59, 59, - /* 400 */ 59, 1002, 244, 103, 103, 103, 103, 102, 102, 101, - /* 410 */ 101, 101, 100, 381, 106, 107, 97, 1023, 1023, 900, - /* 420 */ 903, 892, 892, 104, 104, 105, 105, 105, 105, 274, - /* 430 */ 484, 110, 467, 479, 467, 444, 259, 474, 232, 232, - /* 440 */ 1002, 1003, 1004, 351, 210, 335, 982, 866, 1385, 336, - /* 450 */ 481, 59, 59, 981, 245, 307, 103, 103, 103, 103, - /* 460 */ 102, 102, 101, 101, 101, 100, 381, 106, 107, 97, - /* 470 */ 1023, 1023, 900, 903, 892, 892, 104, 104, 105, 105, - /* 480 */ 105, 105, 453, 459, 484, 408, 377, 259, 474, 271, - /* 490 */ 183, 273, 209, 208, 207, 356, 351, 307, 178, 177, - /* 500 */ 127, 1006, 1098, 14, 14, 43, 43, 1044, 425, 103, - /* 510 */ 103, 103, 103, 102, 102, 101, 101, 101, 100, 381, - /* 520 */ 106, 107, 97, 1023, 1023, 900, 903, 892, 892, 104, - /* 530 */ 104, 105, 105, 105, 105, 294, 1132, 408, 160, 484, - /* 540 */ 408, 1006, 129, 962, 1209, 239, 239, 481, 307, 425, - /* 550 */ 1309, 1097, 351, 235, 243, 272, 820, 481, 963, 425, - /* 560 */ 11, 11, 103, 103, 103, 103, 102, 102, 101, 101, - /* 570 */ 101, 100, 381, 964, 362, 1002, 106, 107, 97, 1023, - /* 580 */ 1023, 900, 903, 892, 892, 104, 104, 105, 105, 105, - /* 590 */ 105, 1275, 161, 126, 777, 289, 1209, 292, 1072, 357, - /* 600 */ 1209, 1127, 476, 357, 778, 425, 247, 425, 351, 248, - /* 610 */ 414, 364, 414, 171, 1002, 1003, 1004, 84, 103, 103, - /* 620 */ 103, 103, 102, 102, 101, 101, 101, 100, 381, 1002, - /* 630 */ 184, 484, 106, 107, 97, 1023, 1023, 900, 903, 892, - /* 640 */ 892, 104, 104, 105, 105, 105, 105, 1123, 1209, 287, - /* 650 */ 484, 1209, 11, 11, 179, 820, 259, 474, 307, 237, - /* 660 */ 182, 351, 321, 365, 414, 308, 367, 366, 1002, 1003, - /* 670 */ 1004, 44, 44, 87, 103, 103, 103, 103, 102, 102, - /* 680 */ 101, 101, 101, 100, 381, 106, 107, 97, 1023, 1023, - /* 690 */ 900, 903, 892, 892, 104, 104, 105, 105, 105, 105, - /* 700 */ 246, 368, 280, 128, 10, 358, 146, 796, 835, 258, - /* 710 */ 1020, 88, 795, 86, 351, 421, 836, 943, 376, 348, - /* 720 */ 191, 943, 1318, 267, 308, 279, 456, 103, 103, 103, - /* 730 */ 103, 102, 102, 101, 101, 101, 100, 381, 106, 95, - /* 740 */ 97, 1023, 1023, 900, 903, 892, 892, 104, 104, 105, - /* 750 */ 105, 105, 105, 420, 249, 238, 238, 238, 238, 79, - /* 760 */ 375, 125, 305, 29, 262, 978, 351, 481, 337, 481, - /* 770 */ 756, 755, 304, 278, 415, 15, 81, 940, 1126, 940, - /* 780 */ 103, 103, 103, 103, 102, 102, 101, 101, 101, 100, - /* 790 */ 381, 107, 97, 1023, 1023, 900, 903, 892, 892, 104, - /* 800 */ 104, 105, 105, 105, 105, 457, 263, 484, 174, 484, - /* 810 */ 238, 238, 863, 407, 402, 216, 216, 351, 409, 193, - /* 820 */ 283, 216, 481, 81, 763, 764, 266, 5, 13, 13, - /* 830 */ 34, 34, 103, 103, 103, 103, 102, 102, 101, 101, - /* 840 */ 101, 100, 381, 97, 1023, 1023, 900, 903, 892, 892, - /* 850 */ 104, 104, 105, 105, 105, 105, 93, 475, 1002, 4, - /* 860 */ 403, 1002, 340, 431, 1002, 297, 212, 1277, 81, 746, - /* 870 */ 1163, 152, 926, 478, 166, 212, 757, 829, 930, 939, - /* 880 */ 216, 939, 858, 103, 103, 103, 103, 102, 102, 101, - /* 890 */ 101, 101, 100, 381, 238, 238, 382, 1002, 1003, 1004, - /* 900 */ 1002, 1003, 1004, 1002, 1003, 1004, 481, 439, 472, 746, - /* 910 */ 105, 105, 105, 105, 98, 758, 1162, 145, 930, 412, - /* 920 */ 879, 406, 793, 81, 395, 89, 90, 91, 105, 105, - /* 930 */ 105, 105, 1323, 92, 484, 382, 486, 485, 240, 275, - /* 940 */ 871, 103, 103, 103, 103, 102, 102, 101, 101, 101, - /* 950 */ 100, 381, 1096, 371, 355, 45, 45, 259, 474, 103, - /* 960 */ 103, 103, 103, 102, 102, 101, 101, 101, 100, 381, - /* 970 */ 1150, 871, 871, 873, 874, 21, 1332, 991, 384, 730, - /* 980 */ 722, 242, 123, 1298, 124, 875, 333, 333, 332, 227, - /* 990 */ 330, 991, 384, 719, 256, 242, 484, 391, 413, 1297, - /* 1000 */ 333, 333, 332, 227, 330, 748, 187, 719, 265, 470, - /* 1010 */ 1279, 1002, 484, 417, 391, 390, 264, 11, 11, 284, - /* 1020 */ 187, 732, 265, 93, 475, 875, 4, 1279, 1281, 419, - /* 1030 */ 264, 369, 416, 11, 11, 1159, 288, 484, 399, 1346, - /* 1040 */ 478, 379, 378, 291, 484, 293, 189, 250, 295, 1027, - /* 1050 */ 1002, 1003, 1004, 190, 1029, 1111, 140, 188, 11, 11, - /* 1060 */ 189, 732, 1028, 382, 923, 46, 46, 190, 1095, 230, - /* 1070 */ 140, 188, 462, 93, 475, 472, 4, 300, 309, 391, - /* 1080 */ 373, 6, 1069, 217, 739, 310, 1030, 879, 1030, 1171, - /* 1090 */ 478, 352, 1279, 90, 91, 800, 259, 474, 1208, 484, - /* 1100 */ 92, 1268, 382, 486, 485, 352, 1002, 871, 879, 426, - /* 1110 */ 259, 474, 172, 382, 238, 238, 1146, 170, 1021, 389, - /* 1120 */ 47, 47, 1157, 739, 872, 472, 481, 469, 871, 350, - /* 1130 */ 1214, 83, 475, 389, 4, 1078, 1071, 879, 871, 871, - /* 1140 */ 873, 874, 21, 90, 91, 1002, 1003, 1004, 478, 251, - /* 1150 */ 92, 251, 382, 486, 485, 443, 370, 871, 1021, 871, - /* 1160 */ 871, 873, 224, 241, 306, 441, 301, 440, 211, 1060, - /* 1170 */ 820, 382, 822, 447, 299, 1059, 484, 1061, 1143, 962, - /* 1180 */ 430, 796, 484, 472, 1340, 312, 795, 465, 871, 871, - /* 1190 */ 873, 874, 21, 314, 963, 879, 316, 59, 59, 1002, - /* 1200 */ 9, 90, 91, 48, 48, 238, 238, 210, 92, 964, - /* 1210 */ 382, 486, 485, 176, 334, 871, 242, 481, 1193, 238, - /* 1220 */ 238, 333, 333, 332, 227, 330, 394, 270, 719, 277, - /* 1230 */ 471, 481, 467, 466, 484, 145, 217, 1201, 1002, 1003, - /* 1240 */ 1004, 187, 3, 265, 184, 445, 871, 871, 873, 874, - /* 1250 */ 21, 264, 1337, 450, 1051, 39, 39, 392, 356, 260, - /* 1260 */ 342, 121, 468, 411, 436, 821, 180, 1094, 1128, 820, - /* 1270 */ 303, 1021, 1272, 1271, 299, 259, 474, 238, 238, 1002, - /* 1280 */ 473, 189, 484, 318, 327, 238, 238, 484, 190, 481, - /* 1290 */ 446, 140, 188, 1343, 238, 238, 1038, 481, 148, 175, - /* 1300 */ 238, 238, 484, 49, 49, 219, 481, 484, 35, 35, - /* 1310 */ 1317, 1021, 481, 484, 1035, 484, 1315, 484, 1002, 1003, - /* 1320 */ 1004, 484, 66, 36, 36, 194, 352, 484, 38, 38, - /* 1330 */ 484, 259, 474, 69, 50, 50, 51, 51, 52, 52, - /* 1340 */ 359, 484, 12, 12, 484, 1198, 484, 158, 53, 53, - /* 1350 */ 405, 112, 112, 385, 389, 484, 26, 484, 143, 484, - /* 1360 */ 150, 484, 54, 54, 397, 40, 40, 55, 55, 484, - /* 1370 */ 79, 484, 153, 1190, 484, 154, 56, 56, 41, 41, - /* 1380 */ 58, 58, 133, 133, 484, 398, 484, 429, 484, 155, - /* 1390 */ 134, 134, 135, 135, 484, 63, 63, 484, 341, 484, - /* 1400 */ 339, 484, 196, 484, 156, 42, 42, 113, 113, 60, - /* 1410 */ 60, 484, 404, 484, 27, 114, 114, 1204, 115, 115, - /* 1420 */ 111, 111, 132, 132, 131, 131, 1266, 418, 484, 162, - /* 1430 */ 484, 200, 119, 119, 118, 118, 484, 74, 424, 484, - /* 1440 */ 1286, 484, 231, 484, 202, 484, 167, 286, 427, 116, - /* 1450 */ 116, 117, 117, 290, 203, 442, 1062, 62, 62, 204, - /* 1460 */ 64, 64, 61, 61, 33, 33, 37, 37, 344, 372, - /* 1470 */ 1114, 1105, 748, 1113, 374, 1112, 254, 458, 1086, 255, - /* 1480 */ 345, 1085, 302, 1084, 1355, 78, 1154, 311, 1104, 449, - /* 1490 */ 452, 1155, 1153, 218, 7, 313, 315, 320, 1152, 85, - /* 1500 */ 1252, 317, 109, 80, 463, 225, 461, 1068, 25, 487, - /* 1510 */ 997, 323, 257, 226, 229, 228, 1136, 324, 325, 326, - /* 1520 */ 488, 136, 1057, 1052, 1302, 1303, 1301, 706, 1300, 137, - /* 1530 */ 122, 138, 383, 173, 1082, 261, 186, 252, 1081, 65, - /* 1540 */ 387, 120, 938, 936, 855, 353, 149, 1079, 139, 151, - /* 1550 */ 192, 780, 195, 276, 952, 157, 141, 361, 70, 363, - /* 1560 */ 859, 159, 71, 72, 142, 73, 955, 354, 147, 197, - /* 1570 */ 198, 951, 130, 16, 199, 285, 216, 1032, 201, 423, - /* 1580 */ 164, 944, 163, 28, 721, 428, 304, 165, 205, 759, - /* 1590 */ 75, 432, 298, 17, 18, 437, 76, 253, 878, 144, - /* 1600 */ 877, 906, 77, 986, 30, 448, 987, 31, 451, 181, - /* 1610 */ 234, 236, 168, 828, 823, 89, 910, 921, 81, 907, - /* 1620 */ 215, 905, 909, 961, 960, 19, 221, 20, 220, 22, - /* 1630 */ 32, 331, 876, 731, 94, 790, 794, 8, 992, 222, - /* 1640 */ 480, 328, 1048, 1048, 1048, 1048, 1048, 1048, 1048, 1048, - /* 1650 */ 223, 1048, 1048, 1048, 1048, 1348, 1347, + /* 0 */ 568, 208, 568, 118, 115, 229, 568, 118, 115, 229, + /* 10 */ 568, 1310, 377, 1289, 408, 562, 562, 562, 568, 409, + /* 20 */ 378, 1310, 1272, 41, 41, 41, 41, 208, 1520, 71, + /* 30 */ 71, 969, 419, 41, 41, 491, 303, 279, 303, 970, + /* 40 */ 397, 71, 71, 125, 126, 80, 1210, 1210, 1047, 1050, + /* 50 */ 1037, 1037, 123, 123, 124, 124, 124, 124, 476, 409, + /* 60 */ 1237, 1, 1, 574, 2, 1241, 550, 118, 115, 229, + /* 70 */ 317, 480, 146, 480, 524, 118, 115, 229, 529, 1323, + /* 80 */ 417, 523, 142, 125, 126, 80, 1210, 1210, 1047, 1050, + /* 90 */ 1037, 1037, 123, 123, 124, 124, 124, 124, 118, 115, + /* 100 */ 229, 327, 122, 122, 122, 122, 121, 121, 120, 120, + /* 110 */ 120, 119, 116, 444, 284, 284, 284, 284, 442, 442, + /* 120 */ 442, 1559, 376, 1561, 1186, 375, 1157, 565, 1157, 565, + /* 130 */ 409, 1559, 537, 259, 226, 444, 101, 145, 449, 316, + /* 140 */ 559, 240, 122, 122, 122, 122, 121, 121, 120, 120, + /* 150 */ 120, 119, 116, 444, 125, 126, 80, 1210, 1210, 1047, + /* 160 */ 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, 142, + /* 170 */ 294, 1186, 339, 448, 120, 120, 120, 119, 116, 444, + /* 180 */ 127, 1186, 1187, 1186, 148, 441, 440, 568, 119, 116, + /* 190 */ 444, 124, 124, 124, 124, 117, 122, 122, 122, 122, + /* 200 */ 121, 121, 120, 120, 120, 119, 116, 444, 454, 113, + /* 210 */ 13, 13, 546, 122, 122, 122, 122, 121, 121, 120, + /* 220 */ 120, 120, 119, 116, 444, 422, 316, 559, 1186, 1187, + /* 230 */ 1186, 149, 1218, 409, 1218, 124, 124, 124, 124, 122, + /* 240 */ 122, 122, 122, 121, 121, 120, 120, 120, 119, 116, + /* 250 */ 444, 465, 342, 1034, 1034, 1048, 1051, 125, 126, 80, + /* 260 */ 1210, 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, + /* 270 */ 124, 124, 1275, 522, 222, 1186, 568, 409, 224, 514, + /* 280 */ 175, 82, 83, 122, 122, 122, 122, 121, 121, 120, + /* 290 */ 120, 120, 119, 116, 444, 1005, 16, 16, 1186, 133, + /* 300 */ 133, 125, 126, 80, 1210, 1210, 1047, 1050, 1037, 1037, + /* 310 */ 123, 123, 124, 124, 124, 124, 122, 122, 122, 122, + /* 320 */ 121, 121, 120, 120, 120, 119, 116, 444, 1038, 546, + /* 330 */ 1186, 373, 1186, 1187, 1186, 252, 1429, 399, 504, 501, + /* 340 */ 500, 111, 560, 566, 4, 924, 924, 433, 499, 340, + /* 350 */ 460, 328, 360, 394, 1231, 1186, 1187, 1186, 563, 568, + /* 360 */ 122, 122, 122, 122, 121, 121, 120, 120, 120, 119, + /* 370 */ 116, 444, 284, 284, 369, 1572, 1598, 441, 440, 154, + /* 380 */ 409, 445, 71, 71, 1282, 565, 1215, 1186, 1187, 1186, + /* 390 */ 85, 1217, 271, 557, 543, 515, 515, 568, 98, 1216, + /* 400 */ 6, 1274, 472, 142, 125, 126, 80, 1210, 1210, 1047, + /* 410 */ 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, 550, + /* 420 */ 13, 13, 1024, 507, 1218, 1186, 1218, 549, 109, 109, + /* 430 */ 222, 568, 1232, 175, 568, 427, 110, 197, 445, 569, + /* 440 */ 445, 430, 1546, 1014, 325, 551, 1186, 270, 287, 368, + /* 450 */ 510, 363, 509, 257, 71, 71, 543, 71, 71, 359, + /* 460 */ 316, 559, 1604, 122, 122, 122, 122, 121, 121, 120, + /* 470 */ 120, 120, 119, 116, 444, 1014, 1014, 1016, 1017, 27, + /* 480 */ 284, 284, 1186, 1187, 1186, 1152, 568, 1603, 409, 899, + /* 490 */ 190, 550, 356, 565, 550, 935, 533, 517, 1152, 516, + /* 500 */ 413, 1152, 552, 1186, 1187, 1186, 568, 544, 544, 51, + /* 510 */ 51, 214, 125, 126, 80, 1210, 1210, 1047, 1050, 1037, + /* 520 */ 1037, 123, 123, 124, 124, 124, 124, 1186, 474, 135, + /* 530 */ 135, 409, 284, 284, 1484, 505, 121, 121, 120, 120, + /* 540 */ 120, 119, 116, 444, 1005, 565, 518, 217, 541, 541, + /* 550 */ 316, 559, 142, 6, 532, 125, 126, 80, 1210, 1210, + /* 560 */ 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, + /* 570 */ 1548, 122, 122, 122, 122, 121, 121, 120, 120, 120, + /* 580 */ 119, 116, 444, 485, 1186, 1187, 1186, 482, 281, 1263, + /* 590 */ 955, 252, 1186, 373, 504, 501, 500, 1186, 340, 570, + /* 600 */ 1186, 570, 409, 292, 499, 955, 874, 191, 480, 316, + /* 610 */ 559, 384, 290, 380, 122, 122, 122, 122, 121, 121, + /* 620 */ 120, 120, 120, 119, 116, 444, 125, 126, 80, 1210, + /* 630 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 640 */ 124, 409, 394, 1132, 1186, 867, 100, 284, 284, 1186, + /* 650 */ 1187, 1186, 373, 1089, 1186, 1187, 1186, 1186, 1187, 1186, + /* 660 */ 565, 455, 32, 373, 233, 125, 126, 80, 1210, 1210, + /* 670 */ 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, + /* 680 */ 1428, 957, 568, 228, 956, 122, 122, 122, 122, 121, + /* 690 */ 121, 120, 120, 120, 119, 116, 444, 1152, 228, 1186, + /* 700 */ 157, 1186, 1187, 1186, 1547, 13, 13, 301, 955, 1226, + /* 710 */ 1152, 153, 409, 1152, 373, 1575, 1170, 5, 369, 1572, + /* 720 */ 429, 1232, 3, 955, 122, 122, 122, 122, 121, 121, + /* 730 */ 120, 120, 120, 119, 116, 444, 125, 126, 80, 1210, + /* 740 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 750 */ 124, 409, 208, 567, 1186, 1025, 1186, 1187, 1186, 1186, + /* 760 */ 388, 850, 155, 1546, 286, 402, 1094, 1094, 488, 568, + /* 770 */ 465, 342, 1315, 1315, 1546, 125, 126, 80, 1210, 1210, + /* 780 */ 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, + /* 790 */ 129, 568, 13, 13, 374, 122, 122, 122, 122, 121, + /* 800 */ 121, 120, 120, 120, 119, 116, 444, 302, 568, 453, + /* 810 */ 528, 1186, 1187, 1186, 13, 13, 1186, 1187, 1186, 1293, + /* 820 */ 463, 1263, 409, 1313, 1313, 1546, 1010, 453, 452, 200, + /* 830 */ 299, 71, 71, 1261, 122, 122, 122, 122, 121, 121, + /* 840 */ 120, 120, 120, 119, 116, 444, 125, 126, 80, 1210, + /* 850 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 860 */ 124, 409, 227, 1069, 1152, 284, 284, 419, 312, 278, + /* 870 */ 278, 285, 285, 1415, 406, 405, 382, 1152, 565, 568, + /* 880 */ 1152, 1189, 565, 1592, 565, 125, 126, 80, 1210, 1210, + /* 890 */ 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, 124, + /* 900 */ 453, 1476, 13, 13, 1530, 122, 122, 122, 122, 121, + /* 910 */ 121, 120, 120, 120, 119, 116, 444, 201, 568, 354, + /* 920 */ 1578, 574, 2, 1241, 838, 839, 840, 1554, 317, 1205, + /* 930 */ 146, 6, 409, 255, 254, 253, 206, 1323, 9, 1189, + /* 940 */ 262, 71, 71, 424, 122, 122, 122, 122, 121, 121, + /* 950 */ 120, 120, 120, 119, 116, 444, 125, 126, 80, 1210, + /* 960 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 970 */ 124, 568, 284, 284, 568, 1206, 409, 573, 313, 1241, + /* 980 */ 349, 1292, 352, 419, 317, 565, 146, 491, 525, 1635, + /* 990 */ 395, 371, 491, 1323, 70, 70, 1291, 71, 71, 240, + /* 1000 */ 1321, 104, 80, 1210, 1210, 1047, 1050, 1037, 1037, 123, + /* 1010 */ 123, 124, 124, 124, 124, 122, 122, 122, 122, 121, + /* 1020 */ 121, 120, 120, 120, 119, 116, 444, 1110, 284, 284, + /* 1030 */ 428, 448, 1519, 1206, 439, 284, 284, 1483, 1348, 311, + /* 1040 */ 474, 565, 1111, 969, 491, 491, 217, 1259, 565, 1532, + /* 1050 */ 568, 970, 207, 568, 1024, 240, 383, 1112, 519, 122, + /* 1060 */ 122, 122, 122, 121, 121, 120, 120, 120, 119, 116, + /* 1070 */ 444, 1015, 107, 71, 71, 1014, 13, 13, 910, 568, + /* 1080 */ 1489, 568, 284, 284, 97, 526, 491, 448, 911, 1322, + /* 1090 */ 1318, 545, 409, 284, 284, 565, 151, 209, 1489, 1491, + /* 1100 */ 262, 450, 55, 55, 56, 56, 565, 1014, 1014, 1016, + /* 1110 */ 443, 332, 409, 527, 12, 295, 125, 126, 80, 1210, + /* 1120 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 1130 */ 124, 347, 409, 862, 1528, 1206, 125, 126, 80, 1210, + /* 1140 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 1150 */ 124, 1133, 1633, 474, 1633, 371, 125, 114, 80, 1210, + /* 1160 */ 1210, 1047, 1050, 1037, 1037, 123, 123, 124, 124, 124, + /* 1170 */ 124, 1489, 329, 474, 331, 122, 122, 122, 122, 121, + /* 1180 */ 121, 120, 120, 120, 119, 116, 444, 203, 1415, 568, + /* 1190 */ 1290, 862, 464, 1206, 436, 122, 122, 122, 122, 121, + /* 1200 */ 121, 120, 120, 120, 119, 116, 444, 553, 1133, 1634, + /* 1210 */ 539, 1634, 15, 15, 890, 122, 122, 122, 122, 121, + /* 1220 */ 121, 120, 120, 120, 119, 116, 444, 568, 298, 538, + /* 1230 */ 1131, 1415, 1552, 1553, 1327, 409, 6, 6, 1163, 1264, + /* 1240 */ 415, 320, 284, 284, 1415, 508, 565, 525, 300, 457, + /* 1250 */ 43, 43, 568, 891, 12, 565, 330, 478, 425, 407, + /* 1260 */ 126, 80, 1210, 1210, 1047, 1050, 1037, 1037, 123, 123, + /* 1270 */ 124, 124, 124, 124, 568, 57, 57, 288, 1186, 1415, + /* 1280 */ 496, 458, 392, 392, 391, 273, 389, 1131, 1551, 847, + /* 1290 */ 1163, 407, 6, 568, 321, 1152, 470, 44, 44, 1550, + /* 1300 */ 1110, 426, 234, 6, 323, 256, 540, 256, 1152, 431, + /* 1310 */ 568, 1152, 322, 17, 487, 1111, 58, 58, 122, 122, + /* 1320 */ 122, 122, 121, 121, 120, 120, 120, 119, 116, 444, + /* 1330 */ 1112, 216, 481, 59, 59, 1186, 1187, 1186, 111, 560, + /* 1340 */ 324, 4, 236, 456, 526, 568, 237, 456, 568, 437, + /* 1350 */ 168, 556, 420, 141, 479, 563, 568, 293, 568, 1091, + /* 1360 */ 568, 293, 568, 1091, 531, 568, 870, 8, 60, 60, + /* 1370 */ 235, 61, 61, 568, 414, 568, 414, 568, 445, 62, + /* 1380 */ 62, 45, 45, 46, 46, 47, 47, 199, 49, 49, + /* 1390 */ 557, 568, 359, 568, 100, 486, 50, 50, 63, 63, + /* 1400 */ 64, 64, 561, 415, 535, 410, 568, 1024, 568, 534, + /* 1410 */ 316, 559, 316, 559, 65, 65, 14, 14, 568, 1024, + /* 1420 */ 568, 512, 930, 870, 1015, 109, 109, 929, 1014, 66, + /* 1430 */ 66, 131, 131, 110, 451, 445, 569, 445, 416, 177, + /* 1440 */ 1014, 132, 132, 67, 67, 568, 467, 568, 930, 471, + /* 1450 */ 1360, 283, 226, 929, 315, 1359, 407, 568, 459, 407, + /* 1460 */ 1014, 1014, 1016, 239, 407, 86, 213, 1346, 52, 52, + /* 1470 */ 68, 68, 1014, 1014, 1016, 1017, 27, 1577, 1174, 447, + /* 1480 */ 69, 69, 288, 97, 108, 1535, 106, 392, 392, 391, + /* 1490 */ 273, 389, 568, 877, 847, 881, 568, 111, 560, 466, + /* 1500 */ 4, 568, 152, 30, 38, 568, 1128, 234, 396, 323, + /* 1510 */ 111, 560, 527, 4, 563, 53, 53, 322, 568, 163, + /* 1520 */ 163, 568, 337, 468, 164, 164, 333, 563, 76, 76, + /* 1530 */ 568, 289, 1508, 568, 31, 1507, 568, 445, 338, 483, + /* 1540 */ 100, 54, 54, 344, 72, 72, 296, 236, 1076, 557, + /* 1550 */ 445, 877, 1356, 134, 134, 168, 73, 73, 141, 161, + /* 1560 */ 161, 1566, 557, 535, 568, 319, 568, 348, 536, 1007, + /* 1570 */ 473, 261, 261, 889, 888, 235, 535, 568, 1024, 568, + /* 1580 */ 475, 534, 261, 367, 109, 109, 521, 136, 136, 130, + /* 1590 */ 130, 1024, 110, 366, 445, 569, 445, 109, 109, 1014, + /* 1600 */ 162, 162, 156, 156, 568, 110, 1076, 445, 569, 445, + /* 1610 */ 410, 351, 1014, 568, 353, 316, 559, 568, 343, 568, + /* 1620 */ 100, 497, 357, 258, 100, 896, 897, 140, 140, 355, + /* 1630 */ 1306, 1014, 1014, 1016, 1017, 27, 139, 139, 362, 451, + /* 1640 */ 137, 137, 138, 138, 1014, 1014, 1016, 1017, 27, 1174, + /* 1650 */ 447, 568, 372, 288, 111, 560, 1018, 4, 392, 392, + /* 1660 */ 391, 273, 389, 568, 1137, 847, 568, 1072, 568, 258, + /* 1670 */ 492, 563, 568, 211, 75, 75, 555, 960, 234, 261, + /* 1680 */ 323, 111, 560, 927, 4, 113, 77, 77, 322, 74, + /* 1690 */ 74, 42, 42, 1369, 445, 48, 48, 1414, 563, 972, + /* 1700 */ 973, 1088, 1087, 1088, 1087, 860, 557, 150, 928, 1342, + /* 1710 */ 113, 1354, 554, 1419, 1018, 1271, 1262, 1250, 236, 1249, + /* 1720 */ 1251, 445, 1585, 1339, 308, 276, 168, 309, 11, 141, + /* 1730 */ 393, 310, 232, 557, 1401, 1024, 335, 291, 1396, 219, + /* 1740 */ 336, 109, 109, 934, 297, 1406, 235, 341, 477, 110, + /* 1750 */ 502, 445, 569, 445, 1389, 1405, 1014, 400, 1289, 365, + /* 1760 */ 223, 1480, 1024, 1479, 1351, 1352, 1350, 1349, 109, 109, + /* 1770 */ 204, 1588, 1226, 558, 265, 218, 110, 205, 445, 569, + /* 1780 */ 445, 410, 387, 1014, 1527, 179, 316, 559, 1014, 1014, + /* 1790 */ 1016, 1017, 27, 230, 1525, 1223, 79, 560, 85, 4, + /* 1800 */ 418, 215, 548, 81, 84, 188, 1402, 173, 181, 461, + /* 1810 */ 451, 35, 462, 563, 183, 1014, 1014, 1016, 1017, 27, + /* 1820 */ 184, 1485, 185, 186, 495, 242, 98, 398, 1408, 36, + /* 1830 */ 1407, 484, 91, 469, 401, 1410, 445, 192, 1474, 246, + /* 1840 */ 1496, 490, 346, 277, 248, 196, 493, 511, 557, 350, + /* 1850 */ 1252, 249, 250, 403, 1309, 1308, 111, 560, 432, 4, + /* 1860 */ 1307, 1300, 93, 1602, 881, 1601, 224, 404, 434, 520, + /* 1870 */ 263, 435, 1571, 563, 1279, 1278, 364, 1024, 306, 1277, + /* 1880 */ 264, 1600, 1557, 109, 109, 370, 1299, 307, 1556, 438, + /* 1890 */ 128, 110, 1374, 445, 569, 445, 445, 546, 1014, 10, + /* 1900 */ 1461, 105, 381, 1373, 34, 571, 99, 1332, 557, 314, + /* 1910 */ 1180, 530, 272, 274, 379, 210, 1331, 547, 385, 386, + /* 1920 */ 275, 572, 1247, 1242, 411, 412, 1512, 165, 178, 1513, + /* 1930 */ 1014, 1014, 1016, 1017, 27, 1511, 1510, 1024, 78, 147, + /* 1940 */ 166, 220, 221, 109, 109, 834, 304, 167, 446, 212, + /* 1950 */ 318, 110, 231, 445, 569, 445, 144, 1086, 1014, 1084, + /* 1960 */ 326, 180, 169, 1205, 182, 334, 238, 913, 241, 1100, + /* 1970 */ 187, 170, 171, 421, 87, 88, 423, 189, 89, 90, + /* 1980 */ 172, 1103, 243, 1099, 244, 158, 18, 245, 345, 247, + /* 1990 */ 1014, 1014, 1016, 1017, 27, 261, 1092, 193, 1220, 489, + /* 2000 */ 194, 37, 366, 849, 494, 251, 195, 506, 92, 19, + /* 2010 */ 498, 358, 20, 503, 879, 361, 94, 892, 305, 159, + /* 2020 */ 513, 39, 95, 1168, 160, 1053, 964, 1139, 96, 174, + /* 2030 */ 1138, 225, 280, 282, 198, 958, 113, 1158, 1154, 260, + /* 2040 */ 21, 22, 23, 1156, 1162, 1161, 1143, 24, 33, 25, + /* 2050 */ 202, 542, 26, 100, 1067, 102, 1054, 103, 7, 1052, + /* 2060 */ 1056, 1109, 1057, 1108, 266, 267, 28, 40, 390, 1019, + /* 2070 */ 861, 112, 29, 564, 1176, 1175, 268, 176, 143, 923, + /* 2080 */ 1238, 1238, 1238, 1238, 1238, 1238, 1238, 1238, 1238, 1238, + /* 2090 */ 1238, 1238, 1238, 1238, 269, 1593, }; static const YYCODETYPE yy_lookahead[] = { - /* 0 */ 174, 226, 227, 228, 226, 227, 228, 172, 145, 146, - /* 10 */ 147, 148, 149, 150, 153, 169, 170, 171, 155, 19, - /* 20 */ 157, 246, 192, 193, 177, 181, 182, 164, 169, 170, - /* 30 */ 171, 31, 164, 153, 190, 174, 175, 187, 153, 39, - /* 40 */ 7, 8, 9, 43, 44, 45, 46, 47, 48, 49, - /* 50 */ 50, 51, 52, 53, 54, 55, 56, 57, 174, 196, - /* 60 */ 197, 226, 227, 228, 196, 197, 46, 47, 48, 49, - /* 70 */ 209, 208, 19, 226, 227, 228, 208, 174, 177, 26, - /* 80 */ 195, 213, 214, 22, 221, 85, 86, 87, 88, 89, - /* 90 */ 90, 91, 92, 93, 94, 95, 43, 44, 45, 46, - /* 100 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, - /* 110 */ 57, 172, 249, 153, 53, 153, 147, 148, 149, 150, - /* 120 */ 22, 23, 69, 103, 155, 19, 157, 226, 227, 228, - /* 130 */ 94, 95, 247, 164, 174, 175, 174, 175, 85, 86, - /* 140 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 43, - /* 150 */ 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, - /* 160 */ 54, 55, 56, 57, 153, 196, 197, 153, 153, 209, - /* 170 */ 210, 209, 210, 67, 95, 161, 237, 208, 19, 165, - /* 180 */ 165, 242, 84, 24, 91, 92, 93, 94, 95, 223, - /* 190 */ 221, 85, 86, 87, 88, 89, 90, 91, 92, 93, - /* 200 */ 94, 95, 43, 44, 45, 46, 47, 48, 49, 50, - /* 210 */ 51, 52, 53, 54, 55, 56, 57, 153, 249, 85, - /* 220 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - /* 230 */ 219, 19, 109, 110, 111, 23, 89, 90, 91, 92, - /* 240 */ 93, 94, 95, 73, 85, 86, 87, 88, 89, 90, - /* 250 */ 91, 92, 93, 94, 95, 43, 44, 45, 46, 47, - /* 260 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, - /* 270 */ 153, 22, 23, 101, 173, 26, 104, 105, 106, 109, - /* 280 */ 110, 111, 181, 11, 19, 59, 114, 73, 23, 110, - /* 290 */ 111, 174, 175, 116, 80, 118, 119, 85, 86, 87, - /* 300 */ 88, 89, 90, 91, 92, 93, 94, 95, 43, 44, - /* 310 */ 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, - /* 320 */ 55, 56, 57, 109, 98, 99, 100, 101, 83, 153, - /* 330 */ 104, 105, 106, 84, 120, 121, 153, 19, 192, 193, - /* 340 */ 114, 23, 89, 90, 99, 59, 23, 230, 103, 26, - /* 350 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 360 */ 95, 43, 44, 45, 46, 47, 48, 49, 50, 51, - /* 370 */ 52, 53, 54, 55, 56, 57, 153, 91, 153, 134, - /* 380 */ 135, 136, 110, 111, 98, 99, 100, 134, 153, 136, - /* 390 */ 19, 22, 23, 26, 23, 26, 80, 174, 175, 174, - /* 400 */ 175, 59, 219, 85, 86, 87, 88, 89, 90, 91, - /* 410 */ 92, 93, 94, 95, 43, 44, 45, 46, 47, 48, - /* 420 */ 49, 50, 51, 52, 53, 54, 55, 56, 57, 16, - /* 430 */ 153, 22, 209, 210, 209, 210, 120, 121, 196, 197, - /* 440 */ 98, 99, 100, 19, 46, 22, 23, 23, 252, 253, - /* 450 */ 208, 174, 175, 84, 219, 153, 85, 86, 87, 88, - /* 460 */ 89, 90, 91, 92, 93, 94, 95, 43, 44, 45, - /* 470 */ 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, - /* 480 */ 56, 57, 153, 153, 153, 153, 209, 120, 121, 76, - /* 490 */ 153, 78, 109, 110, 111, 97, 19, 153, 89, 90, - /* 500 */ 198, 59, 183, 174, 175, 174, 175, 84, 153, 85, - /* 510 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - /* 520 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, - /* 530 */ 53, 54, 55, 56, 57, 16, 197, 153, 22, 153, - /* 540 */ 153, 99, 198, 12, 153, 196, 197, 208, 153, 153, - /* 550 */ 195, 183, 19, 23, 222, 142, 26, 208, 27, 153, - /* 560 */ 174, 175, 85, 86, 87, 88, 89, 90, 91, 92, - /* 570 */ 93, 94, 95, 42, 188, 59, 43, 44, 45, 46, - /* 580 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, - /* 590 */ 57, 195, 22, 198, 63, 76, 153, 78, 167, 168, - /* 600 */ 153, 195, 167, 168, 73, 153, 222, 153, 19, 222, - /* 610 */ 153, 220, 153, 24, 98, 99, 100, 140, 85, 86, - /* 620 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 59, - /* 630 */ 100, 153, 43, 44, 45, 46, 47, 48, 49, 50, - /* 640 */ 51, 52, 53, 54, 55, 56, 57, 195, 153, 195, - /* 650 */ 153, 153, 174, 175, 26, 125, 120, 121, 153, 213, - /* 660 */ 214, 19, 153, 220, 153, 153, 188, 220, 98, 99, - /* 670 */ 100, 174, 175, 140, 85, 86, 87, 88, 89, 90, - /* 680 */ 91, 92, 93, 94, 95, 43, 44, 45, 46, 47, - /* 690 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, - /* 700 */ 243, 189, 243, 198, 172, 250, 251, 117, 31, 201, - /* 710 */ 26, 139, 122, 141, 19, 220, 39, 29, 220, 211, - /* 720 */ 24, 33, 153, 164, 153, 164, 19, 85, 86, 87, - /* 730 */ 88, 89, 90, 91, 92, 93, 94, 95, 43, 44, - /* 740 */ 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, - /* 750 */ 55, 56, 57, 65, 243, 196, 197, 196, 197, 131, - /* 760 */ 189, 22, 103, 24, 153, 23, 19, 208, 26, 208, - /* 770 */ 102, 103, 113, 23, 242, 22, 26, 134, 164, 136, - /* 780 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 790 */ 95, 44, 45, 46, 47, 48, 49, 50, 51, 52, - /* 800 */ 53, 54, 55, 56, 57, 98, 153, 153, 124, 153, - /* 810 */ 196, 197, 23, 23, 61, 26, 26, 19, 23, 123, - /* 820 */ 23, 26, 208, 26, 7, 8, 153, 22, 174, 175, - /* 830 */ 174, 175, 85, 86, 87, 88, 89, 90, 91, 92, - /* 840 */ 93, 94, 95, 45, 46, 47, 48, 49, 50, 51, - /* 850 */ 52, 53, 54, 55, 56, 57, 19, 20, 59, 22, - /* 860 */ 111, 59, 164, 23, 59, 23, 26, 153, 26, 59, - /* 870 */ 153, 72, 23, 36, 72, 26, 35, 23, 59, 134, - /* 880 */ 26, 136, 133, 85, 86, 87, 88, 89, 90, 91, - /* 890 */ 92, 93, 94, 95, 196, 197, 59, 98, 99, 100, - /* 900 */ 98, 99, 100, 98, 99, 100, 208, 66, 71, 99, - /* 910 */ 54, 55, 56, 57, 58, 74, 153, 80, 99, 19, - /* 920 */ 83, 223, 23, 26, 153, 26, 89, 90, 54, 55, - /* 930 */ 56, 57, 153, 96, 153, 98, 99, 100, 22, 153, - /* 940 */ 103, 85, 86, 87, 88, 89, 90, 91, 92, 93, - /* 950 */ 94, 95, 183, 112, 158, 174, 175, 120, 121, 85, - /* 960 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - /* 970 */ 215, 134, 135, 136, 137, 138, 0, 1, 2, 23, - /* 980 */ 21, 5, 26, 153, 22, 59, 10, 11, 12, 13, - /* 990 */ 14, 1, 2, 17, 212, 5, 153, 153, 98, 153, - /* 1000 */ 10, 11, 12, 13, 14, 108, 30, 17, 32, 193, - /* 1010 */ 153, 59, 153, 153, 170, 171, 40, 174, 175, 153, - /* 1020 */ 30, 59, 32, 19, 20, 99, 22, 170, 171, 233, - /* 1030 */ 40, 188, 236, 174, 175, 153, 153, 153, 79, 123, - /* 1040 */ 36, 89, 90, 153, 153, 153, 70, 188, 153, 97, - /* 1050 */ 98, 99, 100, 77, 102, 153, 80, 81, 174, 175, - /* 1060 */ 70, 99, 110, 59, 105, 174, 175, 77, 153, 238, - /* 1070 */ 80, 81, 188, 19, 20, 71, 22, 153, 153, 235, - /* 1080 */ 19, 22, 164, 24, 59, 153, 134, 83, 136, 153, - /* 1090 */ 36, 115, 235, 89, 90, 91, 120, 121, 153, 153, - /* 1100 */ 96, 142, 98, 99, 100, 115, 59, 103, 83, 239, - /* 1110 */ 120, 121, 199, 59, 196, 197, 153, 153, 59, 143, - /* 1120 */ 174, 175, 153, 98, 99, 71, 208, 153, 103, 165, - /* 1130 */ 153, 19, 20, 143, 22, 153, 153, 83, 134, 135, - /* 1140 */ 136, 137, 138, 89, 90, 98, 99, 100, 36, 185, - /* 1150 */ 96, 187, 98, 99, 100, 91, 95, 103, 99, 134, - /* 1160 */ 135, 136, 101, 102, 103, 104, 105, 106, 107, 153, - /* 1170 */ 26, 59, 125, 164, 113, 153, 153, 153, 212, 12, - /* 1180 */ 19, 117, 153, 71, 153, 212, 122, 164, 134, 135, - /* 1190 */ 136, 137, 138, 212, 27, 83, 212, 174, 175, 59, - /* 1200 */ 200, 89, 90, 174, 175, 196, 197, 46, 96, 42, - /* 1210 */ 98, 99, 100, 172, 151, 103, 5, 208, 203, 196, - /* 1220 */ 197, 10, 11, 12, 13, 14, 216, 216, 17, 244, - /* 1230 */ 63, 208, 209, 210, 153, 80, 24, 203, 98, 99, - /* 1240 */ 100, 30, 22, 32, 100, 164, 134, 135, 136, 137, - /* 1250 */ 138, 40, 148, 164, 150, 174, 175, 102, 97, 155, - /* 1260 */ 203, 157, 164, 244, 178, 125, 186, 182, 164, 125, - /* 1270 */ 177, 59, 177, 177, 113, 120, 121, 196, 197, 59, - /* 1280 */ 232, 70, 153, 216, 202, 196, 197, 153, 77, 208, - /* 1290 */ 209, 80, 81, 156, 196, 197, 60, 208, 248, 200, - /* 1300 */ 196, 197, 153, 174, 175, 123, 208, 153, 174, 175, - /* 1310 */ 160, 99, 208, 153, 38, 153, 160, 153, 98, 99, - /* 1320 */ 100, 153, 245, 174, 175, 221, 115, 153, 174, 175, - /* 1330 */ 153, 120, 121, 245, 174, 175, 174, 175, 174, 175, - /* 1340 */ 160, 153, 174, 175, 153, 225, 153, 22, 174, 175, - /* 1350 */ 97, 174, 175, 249, 143, 153, 224, 153, 43, 153, - /* 1360 */ 191, 153, 174, 175, 18, 174, 175, 174, 175, 153, - /* 1370 */ 131, 153, 194, 203, 153, 194, 174, 175, 174, 175, - /* 1380 */ 174, 175, 174, 175, 153, 160, 153, 18, 153, 194, - /* 1390 */ 174, 175, 174, 175, 153, 174, 175, 153, 225, 153, - /* 1400 */ 203, 153, 159, 153, 194, 174, 175, 174, 175, 174, - /* 1410 */ 175, 153, 203, 153, 224, 174, 175, 191, 174, 175, - /* 1420 */ 174, 175, 174, 175, 174, 175, 203, 160, 153, 191, - /* 1430 */ 153, 159, 174, 175, 174, 175, 153, 139, 62, 153, - /* 1440 */ 241, 153, 160, 153, 159, 153, 22, 240, 179, 174, - /* 1450 */ 175, 174, 175, 160, 159, 97, 160, 174, 175, 159, - /* 1460 */ 174, 175, 174, 175, 174, 175, 174, 175, 179, 64, - /* 1470 */ 176, 184, 108, 176, 95, 176, 234, 126, 176, 234, - /* 1480 */ 179, 178, 176, 176, 176, 97, 218, 217, 184, 179, - /* 1490 */ 179, 218, 218, 160, 22, 217, 217, 160, 218, 139, - /* 1500 */ 229, 217, 130, 129, 127, 25, 128, 163, 26, 162, - /* 1510 */ 13, 206, 231, 154, 6, 154, 207, 205, 204, 203, - /* 1520 */ 152, 166, 152, 152, 172, 172, 172, 4, 172, 166, - /* 1530 */ 180, 166, 3, 22, 172, 144, 15, 180, 172, 172, - /* 1540 */ 82, 16, 23, 23, 121, 254, 132, 172, 112, 124, - /* 1550 */ 24, 20, 126, 16, 1, 124, 112, 61, 53, 37, - /* 1560 */ 133, 132, 53, 53, 112, 53, 98, 254, 251, 34, - /* 1570 */ 123, 1, 5, 22, 97, 142, 26, 75, 123, 41, - /* 1580 */ 97, 68, 68, 24, 20, 19, 113, 22, 107, 28, - /* 1590 */ 22, 67, 23, 22, 22, 67, 22, 67, 23, 37, - /* 1600 */ 23, 23, 26, 23, 22, 24, 23, 22, 24, 123, - /* 1610 */ 23, 23, 22, 98, 125, 26, 11, 23, 26, 23, - /* 1620 */ 34, 23, 23, 23, 23, 34, 22, 34, 26, 22, - /* 1630 */ 22, 15, 23, 23, 22, 117, 23, 22, 1, 123, - /* 1640 */ 26, 23, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1650 */ 123, 255, 255, 255, 255, 123, 123, 255, 255, 255, - /* 1660 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1670 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1680 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1690 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1700 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1710 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1720 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1730 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1740 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1750 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1760 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1770 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1780 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1790 */ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - /* 1800 */ 255, 255, + /* 0 */ 193, 193, 193, 274, 275, 276, 193, 274, 275, 276, + /* 10 */ 193, 223, 219, 225, 206, 210, 211, 212, 193, 19, + /* 20 */ 219, 233, 216, 216, 217, 216, 217, 193, 295, 216, + /* 30 */ 217, 31, 193, 216, 217, 193, 228, 213, 230, 39, + /* 40 */ 206, 216, 217, 43, 44, 45, 46, 47, 48, 49, + /* 50 */ 50, 51, 52, 53, 54, 55, 56, 57, 193, 19, + /* 60 */ 185, 186, 187, 188, 189, 190, 253, 274, 275, 276, + /* 70 */ 195, 193, 197, 193, 261, 274, 275, 276, 253, 204, + /* 80 */ 238, 204, 81, 43, 44, 45, 46, 47, 48, 49, + /* 90 */ 50, 51, 52, 53, 54, 55, 56, 57, 274, 275, + /* 100 */ 276, 262, 102, 103, 104, 105, 106, 107, 108, 109, + /* 110 */ 110, 111, 112, 113, 239, 240, 239, 240, 210, 211, + /* 120 */ 212, 314, 315, 314, 59, 316, 86, 252, 88, 252, + /* 130 */ 19, 314, 315, 256, 257, 113, 25, 72, 296, 138, + /* 140 */ 139, 266, 102, 103, 104, 105, 106, 107, 108, 109, + /* 150 */ 110, 111, 112, 113, 43, 44, 45, 46, 47, 48, + /* 160 */ 49, 50, 51, 52, 53, 54, 55, 56, 57, 81, + /* 170 */ 292, 59, 292, 298, 108, 109, 110, 111, 112, 113, + /* 180 */ 69, 116, 117, 118, 72, 106, 107, 193, 111, 112, + /* 190 */ 113, 54, 55, 56, 57, 58, 102, 103, 104, 105, + /* 200 */ 106, 107, 108, 109, 110, 111, 112, 113, 120, 25, + /* 210 */ 216, 217, 145, 102, 103, 104, 105, 106, 107, 108, + /* 220 */ 109, 110, 111, 112, 113, 231, 138, 139, 116, 117, + /* 230 */ 118, 164, 153, 19, 155, 54, 55, 56, 57, 102, + /* 240 */ 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, + /* 250 */ 113, 128, 129, 46, 47, 48, 49, 43, 44, 45, + /* 260 */ 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, + /* 270 */ 56, 57, 216, 193, 25, 59, 193, 19, 165, 166, + /* 280 */ 193, 67, 24, 102, 103, 104, 105, 106, 107, 108, + /* 290 */ 109, 110, 111, 112, 113, 73, 216, 217, 59, 216, + /* 300 */ 217, 43, 44, 45, 46, 47, 48, 49, 50, 51, + /* 310 */ 52, 53, 54, 55, 56, 57, 102, 103, 104, 105, + /* 320 */ 106, 107, 108, 109, 110, 111, 112, 113, 121, 145, + /* 330 */ 59, 193, 116, 117, 118, 119, 273, 204, 122, 123, + /* 340 */ 124, 19, 20, 134, 22, 136, 137, 19, 132, 127, + /* 350 */ 128, 129, 24, 22, 23, 116, 117, 118, 36, 193, + /* 360 */ 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, + /* 370 */ 112, 113, 239, 240, 311, 312, 215, 106, 107, 241, + /* 380 */ 19, 59, 216, 217, 223, 252, 115, 116, 117, 118, + /* 390 */ 151, 120, 26, 71, 193, 308, 309, 193, 149, 128, + /* 400 */ 313, 216, 269, 81, 43, 44, 45, 46, 47, 48, + /* 410 */ 49, 50, 51, 52, 53, 54, 55, 56, 57, 253, + /* 420 */ 216, 217, 100, 95, 153, 59, 155, 261, 106, 107, + /* 430 */ 25, 193, 101, 193, 193, 231, 114, 25, 116, 117, + /* 440 */ 118, 113, 304, 121, 193, 204, 59, 119, 120, 121, + /* 450 */ 122, 123, 124, 125, 216, 217, 193, 216, 217, 131, + /* 460 */ 138, 139, 230, 102, 103, 104, 105, 106, 107, 108, + /* 470 */ 109, 110, 111, 112, 113, 153, 154, 155, 156, 157, + /* 480 */ 239, 240, 116, 117, 118, 76, 193, 23, 19, 25, + /* 490 */ 22, 253, 23, 252, 253, 108, 87, 204, 89, 261, + /* 500 */ 198, 92, 261, 116, 117, 118, 193, 306, 307, 216, + /* 510 */ 217, 150, 43, 44, 45, 46, 47, 48, 49, 50, + /* 520 */ 51, 52, 53, 54, 55, 56, 57, 59, 193, 216, + /* 530 */ 217, 19, 239, 240, 283, 23, 106, 107, 108, 109, + /* 540 */ 110, 111, 112, 113, 73, 252, 253, 142, 308, 309, + /* 550 */ 138, 139, 81, 313, 145, 43, 44, 45, 46, 47, + /* 560 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, + /* 570 */ 307, 102, 103, 104, 105, 106, 107, 108, 109, 110, + /* 580 */ 111, 112, 113, 281, 116, 117, 118, 285, 23, 193, + /* 590 */ 25, 119, 59, 193, 122, 123, 124, 59, 127, 203, + /* 600 */ 59, 205, 19, 268, 132, 25, 23, 22, 193, 138, + /* 610 */ 139, 249, 204, 251, 102, 103, 104, 105, 106, 107, + /* 620 */ 108, 109, 110, 111, 112, 113, 43, 44, 45, 46, + /* 630 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 640 */ 57, 19, 22, 23, 59, 23, 25, 239, 240, 116, + /* 650 */ 117, 118, 193, 11, 116, 117, 118, 116, 117, 118, + /* 660 */ 252, 269, 22, 193, 15, 43, 44, 45, 46, 47, + /* 670 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, + /* 680 */ 273, 143, 193, 118, 143, 102, 103, 104, 105, 106, + /* 690 */ 107, 108, 109, 110, 111, 112, 113, 76, 118, 59, + /* 700 */ 241, 116, 117, 118, 304, 216, 217, 292, 143, 60, + /* 710 */ 89, 241, 19, 92, 193, 193, 23, 22, 311, 312, + /* 720 */ 231, 101, 22, 143, 102, 103, 104, 105, 106, 107, + /* 730 */ 108, 109, 110, 111, 112, 113, 43, 44, 45, 46, + /* 740 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 750 */ 57, 19, 193, 193, 59, 23, 116, 117, 118, 59, + /* 760 */ 201, 21, 241, 304, 22, 206, 127, 128, 129, 193, + /* 770 */ 128, 129, 235, 236, 304, 43, 44, 45, 46, 47, + /* 780 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, + /* 790 */ 22, 193, 216, 217, 193, 102, 103, 104, 105, 106, + /* 800 */ 107, 108, 109, 110, 111, 112, 113, 231, 193, 193, + /* 810 */ 193, 116, 117, 118, 216, 217, 116, 117, 118, 226, + /* 820 */ 80, 193, 19, 235, 236, 304, 23, 211, 212, 231, + /* 830 */ 204, 216, 217, 205, 102, 103, 104, 105, 106, 107, + /* 840 */ 108, 109, 110, 111, 112, 113, 43, 44, 45, 46, + /* 850 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 860 */ 57, 19, 193, 123, 76, 239, 240, 193, 253, 239, + /* 870 */ 240, 239, 240, 193, 106, 107, 193, 89, 252, 193, + /* 880 */ 92, 59, 252, 141, 252, 43, 44, 45, 46, 47, + /* 890 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, + /* 900 */ 284, 161, 216, 217, 193, 102, 103, 104, 105, 106, + /* 910 */ 107, 108, 109, 110, 111, 112, 113, 231, 193, 16, + /* 920 */ 187, 188, 189, 190, 7, 8, 9, 309, 195, 25, + /* 930 */ 197, 313, 19, 127, 128, 129, 262, 204, 22, 117, + /* 940 */ 24, 216, 217, 263, 102, 103, 104, 105, 106, 107, + /* 950 */ 108, 109, 110, 111, 112, 113, 43, 44, 45, 46, + /* 960 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 970 */ 57, 193, 239, 240, 193, 59, 19, 188, 253, 190, + /* 980 */ 77, 226, 79, 193, 195, 252, 197, 193, 19, 301, + /* 990 */ 302, 193, 193, 204, 216, 217, 226, 216, 217, 266, + /* 1000 */ 204, 159, 45, 46, 47, 48, 49, 50, 51, 52, + /* 1010 */ 53, 54, 55, 56, 57, 102, 103, 104, 105, 106, + /* 1020 */ 107, 108, 109, 110, 111, 112, 113, 12, 239, 240, + /* 1030 */ 232, 298, 238, 117, 253, 239, 240, 238, 259, 260, + /* 1040 */ 193, 252, 27, 31, 193, 193, 142, 204, 252, 193, + /* 1050 */ 193, 39, 262, 193, 100, 266, 278, 42, 204, 102, + /* 1060 */ 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, + /* 1070 */ 113, 117, 159, 216, 217, 121, 216, 217, 63, 193, + /* 1080 */ 193, 193, 239, 240, 115, 116, 193, 298, 73, 238, + /* 1090 */ 238, 231, 19, 239, 240, 252, 22, 24, 211, 212, + /* 1100 */ 24, 193, 216, 217, 216, 217, 252, 153, 154, 155, + /* 1110 */ 253, 16, 19, 144, 213, 268, 43, 44, 45, 46, + /* 1120 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 1130 */ 57, 238, 19, 59, 193, 59, 43, 44, 45, 46, + /* 1140 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 1150 */ 57, 22, 23, 193, 25, 193, 43, 44, 45, 46, + /* 1160 */ 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + /* 1170 */ 57, 284, 77, 193, 79, 102, 103, 104, 105, 106, + /* 1180 */ 107, 108, 109, 110, 111, 112, 113, 286, 193, 193, + /* 1190 */ 193, 117, 291, 117, 232, 102, 103, 104, 105, 106, + /* 1200 */ 107, 108, 109, 110, 111, 112, 113, 204, 22, 23, + /* 1210 */ 66, 25, 216, 217, 35, 102, 103, 104, 105, 106, + /* 1220 */ 107, 108, 109, 110, 111, 112, 113, 193, 268, 85, + /* 1230 */ 101, 193, 309, 309, 240, 19, 313, 313, 94, 208, + /* 1240 */ 209, 193, 239, 240, 193, 66, 252, 19, 268, 244, + /* 1250 */ 216, 217, 193, 74, 213, 252, 161, 19, 263, 254, + /* 1260 */ 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, + /* 1270 */ 54, 55, 56, 57, 193, 216, 217, 5, 59, 193, + /* 1280 */ 19, 244, 10, 11, 12, 13, 14, 101, 309, 17, + /* 1290 */ 146, 254, 313, 193, 193, 76, 115, 216, 217, 309, + /* 1300 */ 12, 263, 30, 313, 32, 46, 87, 46, 89, 130, + /* 1310 */ 193, 92, 40, 22, 263, 27, 216, 217, 102, 103, + /* 1320 */ 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, + /* 1330 */ 42, 150, 291, 216, 217, 116, 117, 118, 19, 20, + /* 1340 */ 193, 22, 70, 260, 116, 193, 24, 264, 193, 263, + /* 1350 */ 78, 63, 61, 81, 116, 36, 193, 260, 193, 29, + /* 1360 */ 193, 264, 193, 33, 145, 193, 59, 48, 216, 217, + /* 1370 */ 98, 216, 217, 193, 115, 193, 115, 193, 59, 216, + /* 1380 */ 217, 216, 217, 216, 217, 216, 217, 255, 216, 217, + /* 1390 */ 71, 193, 131, 193, 25, 65, 216, 217, 216, 217, + /* 1400 */ 216, 217, 208, 209, 85, 133, 193, 100, 193, 90, + /* 1410 */ 138, 139, 138, 139, 216, 217, 216, 217, 193, 100, + /* 1420 */ 193, 108, 135, 116, 117, 106, 107, 140, 121, 216, + /* 1430 */ 217, 216, 217, 114, 162, 116, 117, 118, 299, 300, + /* 1440 */ 121, 216, 217, 216, 217, 193, 244, 193, 135, 244, + /* 1450 */ 193, 256, 257, 140, 244, 193, 254, 193, 193, 254, + /* 1460 */ 153, 154, 155, 141, 254, 149, 150, 258, 216, 217, + /* 1470 */ 216, 217, 153, 154, 155, 156, 157, 0, 1, 2, + /* 1480 */ 216, 217, 5, 115, 158, 193, 160, 10, 11, 12, + /* 1490 */ 13, 14, 193, 59, 17, 126, 193, 19, 20, 129, + /* 1500 */ 22, 193, 22, 22, 24, 193, 23, 30, 25, 32, + /* 1510 */ 19, 20, 144, 22, 36, 216, 217, 40, 193, 216, + /* 1520 */ 217, 193, 152, 129, 216, 217, 193, 36, 216, 217, + /* 1530 */ 193, 99, 193, 193, 53, 193, 193, 59, 23, 193, + /* 1540 */ 25, 216, 217, 193, 216, 217, 152, 70, 59, 71, + /* 1550 */ 59, 117, 193, 216, 217, 78, 216, 217, 81, 216, + /* 1560 */ 217, 318, 71, 85, 193, 133, 193, 193, 90, 23, + /* 1570 */ 23, 25, 25, 120, 121, 98, 85, 193, 100, 193, + /* 1580 */ 23, 90, 25, 121, 106, 107, 19, 216, 217, 216, + /* 1590 */ 217, 100, 114, 131, 116, 117, 118, 106, 107, 121, + /* 1600 */ 216, 217, 216, 217, 193, 114, 117, 116, 117, 118, + /* 1610 */ 133, 193, 121, 193, 193, 138, 139, 193, 23, 193, + /* 1620 */ 25, 23, 23, 25, 25, 7, 8, 216, 217, 193, + /* 1630 */ 193, 153, 154, 155, 156, 157, 216, 217, 193, 162, + /* 1640 */ 216, 217, 216, 217, 153, 154, 155, 156, 157, 1, + /* 1650 */ 2, 193, 193, 5, 19, 20, 59, 22, 10, 11, + /* 1660 */ 12, 13, 14, 193, 97, 17, 193, 23, 193, 25, + /* 1670 */ 288, 36, 193, 242, 216, 217, 236, 23, 30, 25, + /* 1680 */ 32, 19, 20, 23, 22, 25, 216, 217, 40, 216, + /* 1690 */ 217, 216, 217, 193, 59, 216, 217, 193, 36, 83, + /* 1700 */ 84, 153, 153, 155, 155, 23, 71, 25, 23, 193, + /* 1710 */ 25, 193, 193, 193, 117, 193, 193, 193, 70, 193, + /* 1720 */ 193, 59, 193, 255, 255, 287, 78, 255, 243, 81, + /* 1730 */ 191, 255, 297, 71, 271, 100, 293, 245, 267, 214, + /* 1740 */ 246, 106, 107, 108, 246, 271, 98, 245, 293, 114, + /* 1750 */ 220, 116, 117, 118, 267, 271, 121, 271, 225, 219, + /* 1760 */ 229, 219, 100, 219, 259, 259, 259, 259, 106, 107, + /* 1770 */ 249, 196, 60, 280, 141, 243, 114, 249, 116, 117, + /* 1780 */ 118, 133, 245, 121, 200, 297, 138, 139, 153, 154, + /* 1790 */ 155, 156, 157, 297, 200, 38, 19, 20, 151, 22, + /* 1800 */ 200, 150, 140, 294, 294, 22, 272, 43, 234, 18, + /* 1810 */ 162, 270, 200, 36, 237, 153, 154, 155, 156, 157, + /* 1820 */ 237, 283, 237, 237, 18, 199, 149, 246, 272, 270, + /* 1830 */ 272, 200, 158, 246, 246, 234, 59, 234, 246, 199, + /* 1840 */ 290, 62, 289, 200, 199, 22, 221, 115, 71, 200, + /* 1850 */ 200, 199, 199, 221, 218, 218, 19, 20, 64, 22, + /* 1860 */ 218, 227, 22, 224, 126, 224, 165, 221, 24, 305, + /* 1870 */ 200, 113, 312, 36, 218, 220, 218, 100, 282, 218, + /* 1880 */ 91, 218, 317, 106, 107, 221, 227, 282, 317, 82, + /* 1890 */ 148, 114, 265, 116, 117, 118, 59, 145, 121, 22, + /* 1900 */ 277, 158, 200, 265, 25, 202, 147, 250, 71, 279, + /* 1910 */ 13, 146, 194, 194, 249, 248, 250, 140, 247, 246, + /* 1920 */ 6, 192, 192, 192, 303, 303, 213, 207, 300, 213, + /* 1930 */ 153, 154, 155, 156, 157, 213, 213, 100, 213, 222, + /* 1940 */ 207, 214, 214, 106, 107, 4, 222, 207, 3, 22, + /* 1950 */ 163, 114, 15, 116, 117, 118, 16, 23, 121, 23, + /* 1960 */ 139, 151, 130, 25, 142, 16, 24, 20, 144, 1, + /* 1970 */ 142, 130, 130, 61, 53, 53, 37, 151, 53, 53, + /* 1980 */ 130, 116, 34, 1, 141, 5, 22, 115, 161, 141, + /* 1990 */ 153, 154, 155, 156, 157, 25, 68, 68, 75, 41, + /* 2000 */ 115, 24, 131, 20, 19, 125, 22, 96, 22, 22, + /* 2010 */ 67, 23, 22, 67, 59, 24, 22, 28, 67, 23, + /* 2020 */ 22, 22, 149, 23, 23, 23, 116, 23, 25, 37, + /* 2030 */ 97, 141, 23, 23, 22, 143, 25, 75, 88, 34, + /* 2040 */ 34, 34, 34, 86, 75, 93, 23, 34, 22, 34, + /* 2050 */ 25, 24, 34, 25, 23, 142, 23, 142, 44, 23, + /* 2060 */ 23, 23, 11, 23, 25, 22, 22, 22, 15, 23, + /* 2070 */ 23, 22, 22, 25, 1, 1, 141, 25, 23, 135, + /* 2080 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2090 */ 319, 319, 319, 319, 141, 141, 319, 319, 319, 319, + /* 2100 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2110 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2120 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2130 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2140 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2150 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2160 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2170 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2180 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2190 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2200 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2210 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2220 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2230 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2240 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2250 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2260 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2270 */ 319, 319, 319, 319, 319, 319, 319, 319, 319, 319, + /* 2280 */ 319, }; -#define YY_SHIFT_COUNT (489) +#define YY_SHIFT_COUNT (574) #define YY_SHIFT_MIN (0) -#define YY_SHIFT_MAX (1637) +#define YY_SHIFT_MAX (2074) static const unsigned short int yy_shift_ofst[] = { - /* 0 */ 990, 976, 1211, 837, 837, 316, 1054, 1054, 1054, 1054, - /* 10 */ 214, 0, 0, 106, 642, 1054, 1054, 1054, 1054, 1054, - /* 20 */ 1054, 1054, 1054, 952, 952, 226, 1155, 316, 316, 316, - /* 30 */ 316, 316, 316, 53, 159, 212, 265, 318, 371, 424, - /* 40 */ 477, 533, 589, 642, 642, 642, 642, 642, 642, 642, - /* 50 */ 642, 642, 642, 642, 642, 642, 642, 642, 642, 642, - /* 60 */ 695, 642, 747, 798, 798, 1004, 1054, 1054, 1054, 1054, - /* 70 */ 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, - /* 80 */ 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, - /* 90 */ 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1112, 1054, 1054, - /* 100 */ 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, 1054, - /* 110 */ 1054, 856, 874, 874, 874, 874, 874, 134, 147, 93, - /* 120 */ 342, 959, 1161, 253, 253, 342, 367, 367, 367, 367, - /* 130 */ 179, 36, 79, 1657, 1657, 1657, 1061, 1061, 1061, 516, - /* 140 */ 799, 516, 516, 531, 531, 802, 249, 369, 342, 342, - /* 150 */ 342, 342, 342, 342, 342, 342, 342, 342, 342, 342, - /* 160 */ 342, 342, 342, 342, 342, 342, 342, 342, 342, 272, - /* 170 */ 442, 442, 536, 1657, 1657, 1657, 1025, 245, 245, 570, - /* 180 */ 172, 286, 805, 1047, 1140, 1220, 342, 342, 342, 342, - /* 190 */ 342, 342, 342, 342, 170, 342, 342, 342, 342, 342, - /* 200 */ 342, 342, 342, 342, 342, 342, 342, 841, 841, 841, - /* 210 */ 342, 342, 342, 342, 530, 342, 342, 342, 1059, 342, - /* 220 */ 342, 1167, 342, 342, 342, 342, 342, 342, 342, 342, - /* 230 */ 123, 688, 177, 1212, 1212, 1212, 1212, 1144, 177, 177, - /* 240 */ 1064, 409, 33, 628, 707, 707, 900, 628, 628, 900, - /* 250 */ 897, 323, 398, 677, 677, 677, 707, 572, 684, 590, - /* 260 */ 739, 1236, 1182, 1182, 1276, 1276, 1182, 1253, 1325, 1315, - /* 270 */ 1239, 1346, 1346, 1346, 1346, 1182, 1369, 1239, 1239, 1253, - /* 280 */ 1325, 1315, 1315, 1239, 1182, 1369, 1298, 1376, 1182, 1369, - /* 290 */ 1424, 1182, 1369, 1182, 1369, 1424, 1358, 1358, 1358, 1405, - /* 300 */ 1424, 1358, 1364, 1358, 1405, 1358, 1358, 1424, 1379, 1379, - /* 310 */ 1424, 1351, 1388, 1351, 1388, 1351, 1388, 1351, 1388, 1182, - /* 320 */ 1472, 1182, 1360, 1372, 1377, 1374, 1378, 1239, 1480, 1482, - /* 330 */ 1497, 1497, 1508, 1508, 1508, 1657, 1657, 1657, 1657, 1657, - /* 340 */ 1657, 1657, 1657, 1657, 1657, 1657, 1657, 1657, 1657, 1657, - /* 350 */ 1657, 20, 413, 98, 423, 519, 383, 962, 742, 61, - /* 360 */ 696, 749, 750, 753, 789, 790, 795, 797, 840, 842, - /* 370 */ 810, 668, 817, 659, 819, 849, 854, 899, 643, 745, - /* 380 */ 956, 926, 916, 1523, 1529, 1511, 1391, 1521, 1458, 1525, - /* 390 */ 1519, 1520, 1423, 1414, 1436, 1526, 1425, 1531, 1426, 1537, - /* 400 */ 1553, 1431, 1427, 1444, 1496, 1522, 1429, 1505, 1509, 1510, - /* 410 */ 1512, 1452, 1468, 1535, 1447, 1570, 1567, 1551, 1477, 1433, - /* 420 */ 1513, 1550, 1514, 1502, 1538, 1455, 1483, 1559, 1564, 1566, - /* 430 */ 1473, 1481, 1565, 1524, 1568, 1571, 1569, 1572, 1528, 1561, - /* 440 */ 1574, 1530, 1562, 1575, 1577, 1578, 1576, 1580, 1582, 1581, - /* 450 */ 1583, 1585, 1584, 1486, 1587, 1588, 1515, 1586, 1590, 1489, - /* 460 */ 1589, 1591, 1592, 1593, 1594, 1596, 1598, 1589, 1599, 1600, - /* 470 */ 1602, 1601, 1604, 1605, 1607, 1608, 1609, 1610, 1612, 1613, - /* 480 */ 1615, 1614, 1518, 1516, 1527, 1532, 1533, 1618, 1616, 1637, + /* 0 */ 1648, 1477, 1272, 322, 322, 1, 1319, 1478, 1491, 1837, + /* 10 */ 1837, 1837, 471, 0, 0, 214, 1093, 1837, 1837, 1837, + /* 20 */ 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 30 */ 271, 271, 1219, 1219, 216, 88, 1, 1, 1, 1, + /* 40 */ 1, 40, 111, 258, 361, 469, 512, 583, 622, 693, + /* 50 */ 732, 803, 842, 913, 1073, 1093, 1093, 1093, 1093, 1093, + /* 60 */ 1093, 1093, 1093, 1093, 1093, 1093, 1093, 1093, 1093, 1093, + /* 70 */ 1093, 1093, 1093, 1113, 1093, 1216, 957, 957, 1635, 1662, + /* 80 */ 1777, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 90 */ 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 100 */ 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 110 */ 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 120 */ 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, + /* 130 */ 137, 181, 181, 181, 181, 181, 181, 181, 94, 430, + /* 140 */ 66, 65, 112, 366, 533, 533, 740, 1261, 533, 533, + /* 150 */ 79, 79, 533, 412, 412, 412, 77, 412, 123, 113, + /* 160 */ 113, 22, 22, 2096, 2096, 328, 328, 328, 239, 468, + /* 170 */ 468, 468, 468, 1015, 1015, 409, 366, 1129, 1186, 533, + /* 180 */ 533, 533, 533, 533, 533, 533, 533, 533, 533, 533, + /* 190 */ 533, 533, 533, 533, 533, 533, 533, 533, 533, 969, + /* 200 */ 621, 621, 533, 642, 788, 788, 1228, 1228, 822, 822, + /* 210 */ 67, 1274, 2096, 2096, 2096, 2096, 2096, 2096, 2096, 1307, + /* 220 */ 954, 954, 585, 472, 640, 387, 695, 538, 541, 700, + /* 230 */ 533, 533, 533, 533, 533, 533, 533, 533, 533, 533, + /* 240 */ 222, 533, 533, 533, 533, 533, 533, 533, 533, 533, + /* 250 */ 533, 533, 533, 1179, 1179, 1179, 533, 533, 533, 565, + /* 260 */ 533, 533, 533, 916, 1144, 533, 533, 1288, 533, 533, + /* 270 */ 533, 533, 533, 533, 533, 533, 639, 1330, 209, 1076, + /* 280 */ 1076, 1076, 1076, 580, 209, 209, 1313, 768, 917, 649, + /* 290 */ 1181, 1316, 405, 1316, 1238, 249, 1181, 1181, 249, 1181, + /* 300 */ 405, 1238, 1369, 464, 1259, 1012, 1012, 1012, 1368, 1368, + /* 310 */ 1368, 1368, 184, 184, 1326, 904, 1287, 1480, 1712, 1712, + /* 320 */ 1633, 1633, 1757, 1757, 1633, 1647, 1651, 1783, 1764, 1791, + /* 330 */ 1791, 1791, 1791, 1633, 1806, 1677, 1651, 1651, 1677, 1783, + /* 340 */ 1764, 1677, 1764, 1677, 1633, 1806, 1674, 1779, 1633, 1806, + /* 350 */ 1823, 1633, 1806, 1633, 1806, 1823, 1732, 1732, 1732, 1794, + /* 360 */ 1840, 1840, 1823, 1732, 1738, 1732, 1794, 1732, 1732, 1701, + /* 370 */ 1844, 1758, 1758, 1823, 1633, 1789, 1789, 1807, 1807, 1742, + /* 380 */ 1752, 1877, 1633, 1743, 1742, 1759, 1765, 1677, 1879, 1897, + /* 390 */ 1897, 1914, 1914, 1914, 2096, 2096, 2096, 2096, 2096, 2096, + /* 400 */ 2096, 2096, 2096, 2096, 2096, 2096, 2096, 2096, 2096, 207, + /* 410 */ 1095, 331, 620, 903, 806, 1074, 1483, 1432, 1481, 1322, + /* 420 */ 1370, 1394, 1515, 1291, 1546, 1547, 1557, 1595, 1598, 1599, + /* 430 */ 1434, 1453, 1618, 1462, 1567, 1489, 1644, 1654, 1616, 1660, + /* 440 */ 1548, 1549, 1682, 1685, 1597, 742, 1941, 1945, 1927, 1787, + /* 450 */ 1937, 1940, 1934, 1936, 1821, 1810, 1832, 1938, 1938, 1942, + /* 460 */ 1822, 1947, 1824, 1949, 1968, 1828, 1841, 1938, 1842, 1912, + /* 470 */ 1939, 1938, 1826, 1921, 1922, 1925, 1926, 1850, 1865, 1948, + /* 480 */ 1843, 1982, 1980, 1964, 1872, 1827, 1928, 1970, 1929, 1923, + /* 490 */ 1958, 1848, 1885, 1977, 1983, 1985, 1871, 1880, 1984, 1943, + /* 500 */ 1986, 1987, 1988, 1990, 1946, 1955, 1991, 1911, 1989, 1994, + /* 510 */ 1951, 1992, 1996, 1873, 1998, 2000, 2001, 2002, 2003, 2004, + /* 520 */ 1999, 1933, 1890, 2009, 2010, 1910, 2005, 2012, 1892, 2011, + /* 530 */ 2006, 2007, 2008, 2013, 1950, 1962, 1957, 2014, 1969, 1952, + /* 540 */ 2015, 2023, 2026, 2027, 2025, 2028, 2018, 1913, 1915, 2031, + /* 550 */ 2011, 2033, 2036, 2037, 2038, 2039, 2040, 2043, 2051, 2044, + /* 560 */ 2045, 2046, 2047, 2049, 2050, 2048, 1944, 1935, 1953, 1954, + /* 570 */ 2052, 2055, 2053, 2073, 2074, }; -#define YY_REDUCE_COUNT (350) -#define YY_REDUCE_MIN (-225) -#define YY_REDUCE_MAX (1375) +#define YY_REDUCE_COUNT (408) +#define YY_REDUCE_MIN (-271) +#define YY_REDUCE_MAX (1740) static const short yy_reduce_ofst[] = { - /* 0 */ -137, -31, 1104, 1023, 1081, -132, -40, -38, 223, 225, - /* 10 */ 698, -153, -99, -225, -165, 386, 478, 843, 859, -139, - /* 20 */ 884, 117, 277, 844, 857, 964, 559, 561, 614, 918, - /* 30 */ 1009, 1089, 1098, -222, -222, -222, -222, -222, -222, -222, - /* 40 */ -222, -222, -222, -222, -222, -222, -222, -222, -222, -222, - /* 50 */ -222, -222, -222, -222, -222, -222, -222, -222, -222, -222, - /* 60 */ -222, -222, -222, -222, -222, 329, 331, 497, 654, 656, - /* 70 */ 781, 891, 946, 1029, 1129, 1134, 1149, 1154, 1160, 1162, - /* 80 */ 1164, 1168, 1174, 1177, 1188, 1191, 1193, 1202, 1204, 1206, - /* 90 */ 1208, 1216, 1218, 1221, 1231, 1233, 1235, 1241, 1244, 1246, - /* 100 */ 1248, 1250, 1258, 1260, 1275, 1277, 1283, 1286, 1288, 1290, - /* 110 */ 1292, -222, -222, -222, -222, -222, -222, -222, -222, -222, - /* 120 */ -115, 796, -156, -154, -141, 14, 242, 349, 242, 349, - /* 130 */ -61, -222, -222, -222, -222, -222, 101, 101, 101, 332, - /* 140 */ 302, 384, 387, -170, 146, 344, 196, 196, 15, 11, - /* 150 */ 183, 235, 395, 355, 396, 406, 452, 457, 391, 459, - /* 160 */ 443, 447, 511, 495, 454, 512, 505, 571, 498, 532, - /* 170 */ 431, 435, 339, 455, 446, 508, -174, -116, -97, -120, - /* 180 */ -150, 64, 176, 330, 337, 509, 569, 611, 653, 673, - /* 190 */ 714, 717, 763, 771, -34, 779, 786, 830, 846, 860, - /* 200 */ 866, 882, 883, 890, 892, 895, 902, 319, 368, 769, - /* 210 */ 915, 924, 925, 932, 755, 936, 945, 963, 782, 969, - /* 220 */ 974, 816, 977, 64, 982, 983, 1016, 1022, 1024, 1031, - /* 230 */ 870, 831, 913, 966, 973, 981, 984, 755, 913, 913, - /* 240 */ 1000, 1041, 1063, 1015, 1010, 1011, 985, 1034, 1057, 1019, - /* 250 */ 1086, 1080, 1085, 1093, 1095, 1096, 1067, 1048, 1082, 1099, - /* 260 */ 1137, 1050, 1150, 1156, 1077, 1088, 1180, 1120, 1132, 1169, - /* 270 */ 1170, 1178, 1181, 1195, 1210, 1225, 1243, 1197, 1209, 1173, - /* 280 */ 1190, 1226, 1238, 1223, 1267, 1272, 1199, 1207, 1282, 1285, - /* 290 */ 1269, 1293, 1295, 1296, 1300, 1289, 1294, 1297, 1299, 1287, - /* 300 */ 1301, 1302, 1303, 1306, 1304, 1307, 1308, 1310, 1242, 1245, - /* 310 */ 1311, 1268, 1270, 1273, 1278, 1274, 1279, 1280, 1284, 1333, - /* 320 */ 1271, 1337, 1281, 1309, 1305, 1312, 1314, 1316, 1344, 1347, - /* 330 */ 1359, 1361, 1368, 1370, 1371, 1291, 1313, 1317, 1355, 1352, - /* 340 */ 1353, 1354, 1356, 1363, 1350, 1357, 1362, 1366, 1367, 1375, - /* 350 */ 1365, + /* 0 */ -125, 733, 789, 241, 293, -123, -193, -191, -183, -187, + /* 10 */ 166, 238, 133, -207, -199, -267, -176, -6, 204, 489, + /* 20 */ 576, -175, 598, 686, 615, 725, 860, 778, 781, 857, + /* 30 */ 616, 887, 87, 240, -192, 408, 626, 796, 843, 854, + /* 40 */ 1003, -271, -271, -271, -271, -271, -271, -271, -271, -271, + /* 50 */ -271, -271, -271, -271, -271, -271, -271, -271, -271, -271, + /* 60 */ -271, -271, -271, -271, -271, -271, -271, -271, -271, -271, + /* 70 */ -271, -271, -271, -271, -271, -271, -271, -271, 80, 83, + /* 80 */ 313, 886, 888, 996, 1034, 1059, 1081, 1100, 1117, 1152, + /* 90 */ 1155, 1163, 1165, 1167, 1169, 1172, 1180, 1182, 1184, 1198, + /* 100 */ 1200, 1213, 1215, 1225, 1227, 1252, 1254, 1264, 1299, 1303, + /* 110 */ 1308, 1312, 1325, 1328, 1337, 1340, 1343, 1371, 1373, 1384, + /* 120 */ 1386, 1411, 1420, 1424, 1426, 1458, 1470, 1473, 1475, 1479, + /* 130 */ -271, -271, -271, -271, -271, -271, -271, -271, -271, -271, + /* 140 */ -271, 138, 459, 396, -158, 470, 302, -212, 521, 201, + /* 150 */ -195, -92, 559, 630, 632, 630, -271, 632, 901, 63, + /* 160 */ 407, -271, -271, -271, -271, 161, 161, 161, 251, 335, + /* 170 */ 847, 960, 980, 537, 588, 618, 628, 688, 688, -166, + /* 180 */ -161, 674, 790, 794, 799, 851, 852, -122, 680, -120, + /* 190 */ 995, 1038, 415, 1051, 893, 798, 962, 400, 1086, 779, + /* 200 */ 923, 924, 263, 1041, 979, 990, 1083, 1097, 1031, 1194, + /* 210 */ 362, 994, 1139, 1005, 1037, 1202, 1205, 1195, 1210, -194, + /* 220 */ 56, 185, -135, 232, 522, 560, 601, 617, 669, 683, + /* 230 */ 711, 856, 908, 941, 1048, 1101, 1147, 1257, 1262, 1265, + /* 240 */ 392, 1292, 1333, 1339, 1342, 1346, 1350, 1359, 1374, 1418, + /* 250 */ 1421, 1436, 1437, 593, 755, 770, 997, 1445, 1459, 1209, + /* 260 */ 1500, 1504, 1516, 1132, 1243, 1518, 1519, 1440, 1520, 560, + /* 270 */ 1522, 1523, 1524, 1526, 1527, 1529, 1382, 1438, 1431, 1468, + /* 280 */ 1469, 1472, 1476, 1209, 1431, 1431, 1485, 1525, 1539, 1435, + /* 290 */ 1463, 1471, 1492, 1487, 1443, 1494, 1474, 1484, 1498, 1486, + /* 300 */ 1502, 1455, 1530, 1531, 1533, 1540, 1542, 1544, 1505, 1506, + /* 310 */ 1507, 1508, 1521, 1528, 1493, 1537, 1532, 1575, 1488, 1496, + /* 320 */ 1584, 1594, 1509, 1510, 1600, 1538, 1534, 1541, 1574, 1577, + /* 330 */ 1583, 1585, 1586, 1612, 1626, 1581, 1556, 1558, 1587, 1559, + /* 340 */ 1601, 1588, 1603, 1592, 1631, 1640, 1550, 1553, 1643, 1645, + /* 350 */ 1625, 1649, 1652, 1650, 1653, 1632, 1636, 1637, 1642, 1634, + /* 360 */ 1639, 1641, 1646, 1656, 1655, 1658, 1659, 1661, 1663, 1560, + /* 370 */ 1564, 1596, 1605, 1664, 1670, 1565, 1571, 1627, 1638, 1657, + /* 380 */ 1665, 1623, 1702, 1630, 1666, 1667, 1671, 1673, 1703, 1718, + /* 390 */ 1719, 1729, 1730, 1731, 1621, 1622, 1628, 1720, 1713, 1716, + /* 400 */ 1722, 1723, 1733, 1717, 1724, 1727, 1728, 1725, 1740, }; static const YYACTIONTYPE yy_default[] = { - /* 0 */ 1389, 1389, 1389, 1261, 1046, 1151, 1261, 1261, 1261, 1261, - /* 10 */ 1046, 1181, 1181, 1312, 1077, 1046, 1046, 1046, 1046, 1046, - /* 20 */ 1046, 1260, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 30 */ 1046, 1046, 1046, 1187, 1046, 1046, 1046, 1046, 1262, 1263, - /* 40 */ 1046, 1046, 1046, 1311, 1313, 1197, 1196, 1195, 1194, 1294, - /* 50 */ 1168, 1192, 1185, 1189, 1256, 1257, 1255, 1259, 1262, 1263, - /* 60 */ 1046, 1188, 1226, 1240, 1225, 1046, 1046, 1046, 1046, 1046, - /* 70 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 80 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 90 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 100 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 110 */ 1046, 1234, 1239, 1246, 1238, 1235, 1228, 1227, 1229, 1230, - /* 120 */ 1046, 1067, 1116, 1046, 1046, 1046, 1329, 1328, 1046, 1046, - /* 130 */ 1077, 1231, 1232, 1243, 1242, 1241, 1319, 1345, 1344, 1046, - /* 140 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 150 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 160 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1077, - /* 170 */ 1073, 1073, 1046, 1324, 1151, 1142, 1046, 1046, 1046, 1046, - /* 180 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1316, 1314, 1046, - /* 190 */ 1276, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 200 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 210 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1147, 1046, - /* 220 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1339, - /* 230 */ 1046, 1289, 1130, 1147, 1147, 1147, 1147, 1149, 1131, 1129, - /* 240 */ 1141, 1077, 1053, 1191, 1170, 1170, 1378, 1191, 1191, 1378, - /* 250 */ 1091, 1359, 1088, 1181, 1181, 1181, 1170, 1258, 1148, 1141, - /* 260 */ 1046, 1381, 1156, 1156, 1380, 1380, 1156, 1200, 1206, 1119, - /* 270 */ 1191, 1125, 1125, 1125, 1125, 1156, 1064, 1191, 1191, 1200, - /* 280 */ 1206, 1119, 1119, 1191, 1156, 1064, 1293, 1375, 1156, 1064, - /* 290 */ 1269, 1156, 1064, 1156, 1064, 1269, 1117, 1117, 1117, 1106, - /* 300 */ 1269, 1117, 1091, 1117, 1106, 1117, 1117, 1269, 1273, 1273, - /* 310 */ 1269, 1174, 1169, 1174, 1169, 1174, 1169, 1174, 1169, 1156, - /* 320 */ 1264, 1156, 1046, 1186, 1175, 1184, 1182, 1191, 1070, 1109, - /* 330 */ 1342, 1342, 1338, 1338, 1338, 1386, 1386, 1324, 1354, 1077, - /* 340 */ 1077, 1077, 1077, 1354, 1093, 1093, 1077, 1077, 1077, 1077, - /* 350 */ 1354, 1046, 1046, 1046, 1046, 1046, 1046, 1349, 1046, 1278, - /* 360 */ 1160, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 370 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 380 */ 1046, 1046, 1211, 1046, 1049, 1321, 1046, 1046, 1320, 1046, - /* 390 */ 1046, 1046, 1046, 1046, 1046, 1161, 1046, 1046, 1046, 1046, - /* 400 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 410 */ 1046, 1046, 1046, 1046, 1377, 1046, 1046, 1046, 1046, 1046, - /* 420 */ 1046, 1292, 1291, 1046, 1046, 1158, 1046, 1046, 1046, 1046, - /* 430 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 440 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 450 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 460 */ 1183, 1046, 1176, 1046, 1046, 1046, 1046, 1368, 1046, 1046, - /* 470 */ 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, 1046, - /* 480 */ 1046, 1363, 1133, 1213, 1046, 1212, 1216, 1046, 1058, 1046, + /* 0 */ 1639, 1639, 1639, 1469, 1236, 1347, 1236, 1236, 1236, 1469, + /* 10 */ 1469, 1469, 1236, 1377, 1377, 1522, 1269, 1236, 1236, 1236, + /* 20 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1468, 1236, 1236, + /* 30 */ 1236, 1236, 1555, 1555, 1236, 1236, 1236, 1236, 1236, 1236, + /* 40 */ 1236, 1236, 1386, 1236, 1393, 1236, 1236, 1236, 1236, 1236, + /* 50 */ 1470, 1471, 1236, 1236, 1236, 1521, 1523, 1486, 1400, 1399, + /* 60 */ 1398, 1397, 1504, 1365, 1391, 1384, 1388, 1465, 1466, 1464, + /* 70 */ 1617, 1471, 1470, 1236, 1387, 1433, 1449, 1432, 1236, 1236, + /* 80 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 90 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 100 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 110 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 120 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 130 */ 1441, 1448, 1447, 1446, 1455, 1445, 1442, 1435, 1434, 1436, + /* 140 */ 1437, 1236, 1236, 1260, 1236, 1236, 1257, 1311, 1236, 1236, + /* 150 */ 1236, 1236, 1236, 1541, 1540, 1236, 1438, 1236, 1269, 1427, + /* 160 */ 1426, 1452, 1439, 1451, 1450, 1529, 1591, 1590, 1487, 1236, + /* 170 */ 1236, 1236, 1236, 1236, 1236, 1555, 1236, 1236, 1236, 1236, + /* 180 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 190 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1367, + /* 200 */ 1555, 1555, 1236, 1269, 1555, 1555, 1368, 1368, 1265, 1265, + /* 210 */ 1371, 1236, 1536, 1338, 1338, 1338, 1338, 1347, 1338, 1236, + /* 220 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 230 */ 1236, 1236, 1236, 1236, 1526, 1524, 1236, 1236, 1236, 1236, + /* 240 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 250 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 260 */ 1236, 1236, 1236, 1343, 1236, 1236, 1236, 1236, 1236, 1236, + /* 270 */ 1236, 1236, 1236, 1236, 1236, 1584, 1236, 1499, 1325, 1343, + /* 280 */ 1343, 1343, 1343, 1345, 1326, 1324, 1337, 1270, 1243, 1631, + /* 290 */ 1403, 1392, 1344, 1392, 1628, 1390, 1403, 1403, 1390, 1403, + /* 300 */ 1344, 1628, 1286, 1606, 1281, 1377, 1377, 1377, 1367, 1367, + /* 310 */ 1367, 1367, 1371, 1371, 1467, 1344, 1337, 1236, 1631, 1631, + /* 320 */ 1353, 1353, 1630, 1630, 1353, 1487, 1614, 1412, 1314, 1320, + /* 330 */ 1320, 1320, 1320, 1353, 1254, 1390, 1614, 1614, 1390, 1412, + /* 340 */ 1314, 1390, 1314, 1390, 1353, 1254, 1503, 1625, 1353, 1254, + /* 350 */ 1477, 1353, 1254, 1353, 1254, 1477, 1312, 1312, 1312, 1301, + /* 360 */ 1236, 1236, 1477, 1312, 1286, 1312, 1301, 1312, 1312, 1573, + /* 370 */ 1236, 1481, 1481, 1477, 1353, 1565, 1565, 1380, 1380, 1385, + /* 380 */ 1371, 1472, 1353, 1236, 1385, 1383, 1381, 1390, 1304, 1587, + /* 390 */ 1587, 1583, 1583, 1583, 1636, 1636, 1536, 1599, 1269, 1269, + /* 400 */ 1269, 1269, 1599, 1288, 1288, 1270, 1270, 1269, 1599, 1236, + /* 410 */ 1236, 1236, 1236, 1236, 1236, 1594, 1236, 1531, 1488, 1357, + /* 420 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 430 */ 1236, 1236, 1236, 1236, 1542, 1236, 1236, 1236, 1236, 1236, + /* 440 */ 1236, 1236, 1236, 1236, 1236, 1417, 1236, 1239, 1533, 1236, + /* 450 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1394, 1395, 1358, + /* 460 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1409, 1236, 1236, + /* 470 */ 1236, 1404, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 480 */ 1627, 1236, 1236, 1236, 1236, 1236, 1236, 1502, 1501, 1236, + /* 490 */ 1236, 1355, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 500 */ 1236, 1236, 1236, 1236, 1236, 1284, 1236, 1236, 1236, 1236, + /* 510 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 520 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1382, + /* 530 */ 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 540 */ 1236, 1236, 1236, 1236, 1570, 1372, 1236, 1236, 1236, 1236, + /* 550 */ 1618, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, 1236, + /* 560 */ 1236, 1236, 1236, 1236, 1236, 1610, 1328, 1418, 1236, 1421, + /* 570 */ 1258, 1236, 1248, 1236, 1236, }; /********** End of lemon-generated parsing tables *****************************/ -/* The next table maps tokens (terminal symbols) into fallback tokens. +/* The next table maps tokens (terminal symbols) into fallback tokens. ** If a construct like the following: -** +** ** %fallback ID X Y Z. ** ** appears in the grammar, then ID becomes a fallback token for X, Y, @@ -142261,8 +170463,8 @@ static const YYCODETYPE yyFallback[] = { 0, /* LP => nothing */ 0, /* RP => nothing */ 0, /* AS => nothing */ - 59, /* WITHOUT => ID */ 0, /* COMMA => nothing */ + 59, /* WITHOUT => ID */ 59, /* ABORT => ID */ 59, /* ACTION => ID */ 59, /* AFTER => ID */ @@ -142312,14 +170514,115 @@ static const YYCODETYPE yyFallback[] = { 59, /* REPLACE => ID */ 59, /* RESTRICT => ID */ 59, /* ROW => ID */ + 59, /* ROWS => ID */ 59, /* TRIGGER => ID */ 59, /* VACUUM => ID */ 59, /* VIEW => ID */ 59, /* VIRTUAL => ID */ 59, /* WITH => ID */ + 59, /* NULLS => ID */ + 59, /* FIRST => ID */ + 59, /* LAST => ID */ + 59, /* CURRENT => ID */ + 59, /* FOLLOWING => ID */ + 59, /* PARTITION => ID */ + 59, /* PRECEDING => ID */ + 59, /* RANGE => ID */ + 59, /* UNBOUNDED => ID */ + 59, /* EXCLUDE => ID */ + 59, /* GROUPS => ID */ + 59, /* OTHERS => ID */ + 59, /* TIES => ID */ + 59, /* GENERATED => ID */ + 59, /* ALWAYS => ID */ + 59, /* MATERIALIZED => ID */ 59, /* REINDEX => ID */ 59, /* RENAME => ID */ 59, /* CTIME_KW => ID */ + 0, /* ANY => nothing */ + 0, /* BITAND => nothing */ + 0, /* BITOR => nothing */ + 0, /* LSHIFT => nothing */ + 0, /* RSHIFT => nothing */ + 0, /* PLUS => nothing */ + 0, /* MINUS => nothing */ + 0, /* STAR => nothing */ + 0, /* SLASH => nothing */ + 0, /* REM => nothing */ + 0, /* CONCAT => nothing */ + 0, /* PTR => nothing */ + 0, /* COLLATE => nothing */ + 0, /* BITNOT => nothing */ + 0, /* ON => nothing */ + 0, /* INDEXED => nothing */ + 0, /* STRING => nothing */ + 0, /* JOIN_KW => nothing */ + 0, /* CONSTRAINT => nothing */ + 0, /* DEFAULT => nothing */ + 0, /* NULL => nothing */ + 0, /* PRIMARY => nothing */ + 0, /* UNIQUE => nothing */ + 0, /* CHECK => nothing */ + 0, /* REFERENCES => nothing */ + 0, /* AUTOINCR => nothing */ + 0, /* INSERT => nothing */ + 0, /* DELETE => nothing */ + 0, /* UPDATE => nothing */ + 0, /* SET => nothing */ + 0, /* DEFERRABLE => nothing */ + 0, /* FOREIGN => nothing */ + 0, /* DROP => nothing */ + 0, /* UNION => nothing */ + 0, /* ALL => nothing */ + 0, /* EXCEPT => nothing */ + 0, /* INTERSECT => nothing */ + 0, /* SELECT => nothing */ + 0, /* VALUES => nothing */ + 0, /* DISTINCT => nothing */ + 0, /* DOT => nothing */ + 0, /* FROM => nothing */ + 0, /* JOIN => nothing */ + 0, /* USING => nothing */ + 0, /* ORDER => nothing */ + 0, /* GROUP => nothing */ + 0, /* HAVING => nothing */ + 0, /* LIMIT => nothing */ + 0, /* WHERE => nothing */ + 0, /* RETURNING => nothing */ + 0, /* INTO => nothing */ + 0, /* NOTHING => nothing */ + 0, /* FLOAT => nothing */ + 0, /* BLOB => nothing */ + 0, /* INTEGER => nothing */ + 0, /* VARIABLE => nothing */ + 0, /* CASE => nothing */ + 0, /* WHEN => nothing */ + 0, /* THEN => nothing */ + 0, /* ELSE => nothing */ + 0, /* INDEX => nothing */ + 0, /* ALTER => nothing */ + 0, /* ADD => nothing */ + 0, /* WINDOW => nothing */ + 0, /* OVER => nothing */ + 0, /* FILTER => nothing */ + 0, /* COLUMN => nothing */ + 0, /* AGG_FUNCTION => nothing */ + 0, /* AGG_COLUMN => nothing */ + 0, /* TRUEFALSE => nothing */ + 0, /* ISNOT => nothing */ + 0, /* FUNCTION => nothing */ + 0, /* UMINUS => nothing */ + 0, /* UPLUS => nothing */ + 0, /* TRUTH => nothing */ + 0, /* REGISTER => nothing */ + 0, /* VECTOR => nothing */ + 0, /* SELECT_COLUMN => nothing */ + 0, /* IF_NULL_ROW => nothing */ + 0, /* ASTERISK => nothing */ + 0, /* SPAN => nothing */ + 0, /* ERROR => nothing */ + 0, /* SPACE => nothing */ + 0, /* ILLEGAL => nothing */ }; #endif /* YYFALLBACK */ @@ -142371,6 +170674,7 @@ struct yyParser { }; typedef struct yyParser yyParser; +/* #include */ #ifndef NDEBUG /* #include */ static FILE *yyTraceFILE = 0; @@ -142378,10 +170682,10 @@ static char *yyTracePrompt = 0; #endif /* NDEBUG */ #ifndef NDEBUG -/* +/* ** Turn parser tracing on by giving a stream to which to write the trace ** and a prompt to preface each trace message. Tracing is turned off -** by making either argument NULL +** by making either argument NULL ** ** Inputs: **
                  @@ -142406,7 +170710,7 @@ SQLITE_PRIVATE void sqlite3ParserTrace(FILE *TraceFILE, char *zTracePrompt){ #if defined(YYCOVERAGE) || !defined(NDEBUG) /* For tracing shifts, the names of all terminals and nonterminals ** are required. The following table supplies these names */ -static const char *const yyTokenName[] = { +static const char *const yyTokenName[] = { /* 0 */ "$", /* 1 */ "SEMI", /* 2 */ "EXPLAIN", @@ -142432,8 +170736,8 @@ static const char *const yyTokenName[] = { /* 22 */ "LP", /* 23 */ "RP", /* 24 */ "AS", - /* 25 */ "WITHOUT", - /* 26 */ "COMMA", + /* 25 */ "COMMA", + /* 26 */ "WITHOUT", /* 27 */ "ABORT", /* 28 */ "ACTION", /* 29 */ "AFTER", @@ -142483,185 +170787,249 @@ static const char *const yyTokenName[] = { /* 73 */ "REPLACE", /* 74 */ "RESTRICT", /* 75 */ "ROW", - /* 76 */ "TRIGGER", - /* 77 */ "VACUUM", - /* 78 */ "VIEW", - /* 79 */ "VIRTUAL", - /* 80 */ "WITH", - /* 81 */ "REINDEX", - /* 82 */ "RENAME", - /* 83 */ "CTIME_KW", - /* 84 */ "ANY", - /* 85 */ "BITAND", - /* 86 */ "BITOR", - /* 87 */ "LSHIFT", - /* 88 */ "RSHIFT", - /* 89 */ "PLUS", - /* 90 */ "MINUS", - /* 91 */ "STAR", - /* 92 */ "SLASH", - /* 93 */ "REM", - /* 94 */ "CONCAT", - /* 95 */ "COLLATE", - /* 96 */ "BITNOT", - /* 97 */ "ON", - /* 98 */ "INDEXED", - /* 99 */ "STRING", - /* 100 */ "JOIN_KW", - /* 101 */ "CONSTRAINT", - /* 102 */ "DEFAULT", - /* 103 */ "NULL", - /* 104 */ "PRIMARY", - /* 105 */ "UNIQUE", - /* 106 */ "CHECK", - /* 107 */ "REFERENCES", - /* 108 */ "AUTOINCR", - /* 109 */ "INSERT", - /* 110 */ "DELETE", - /* 111 */ "UPDATE", - /* 112 */ "SET", - /* 113 */ "DEFERRABLE", - /* 114 */ "FOREIGN", - /* 115 */ "DROP", - /* 116 */ "UNION", - /* 117 */ "ALL", - /* 118 */ "EXCEPT", - /* 119 */ "INTERSECT", - /* 120 */ "SELECT", - /* 121 */ "VALUES", - /* 122 */ "DISTINCT", - /* 123 */ "DOT", - /* 124 */ "FROM", - /* 125 */ "JOIN", - /* 126 */ "USING", - /* 127 */ "ORDER", - /* 128 */ "GROUP", - /* 129 */ "HAVING", - /* 130 */ "LIMIT", - /* 131 */ "WHERE", - /* 132 */ "INTO", - /* 133 */ "NOTHING", - /* 134 */ "FLOAT", - /* 135 */ "BLOB", - /* 136 */ "INTEGER", - /* 137 */ "VARIABLE", - /* 138 */ "CASE", - /* 139 */ "WHEN", - /* 140 */ "THEN", - /* 141 */ "ELSE", - /* 142 */ "INDEX", - /* 143 */ "ALTER", - /* 144 */ "ADD", - /* 145 */ "input", - /* 146 */ "cmdlist", - /* 147 */ "ecmd", - /* 148 */ "cmdx", - /* 149 */ "explain", - /* 150 */ "cmd", - /* 151 */ "transtype", - /* 152 */ "trans_opt", - /* 153 */ "nm", - /* 154 */ "savepoint_opt", - /* 155 */ "create_table", - /* 156 */ "create_table_args", - /* 157 */ "createkw", - /* 158 */ "temp", - /* 159 */ "ifnotexists", - /* 160 */ "dbnm", - /* 161 */ "columnlist", - /* 162 */ "conslist_opt", - /* 163 */ "table_options", - /* 164 */ "select", - /* 165 */ "columnname", - /* 166 */ "carglist", - /* 167 */ "typetoken", - /* 168 */ "typename", - /* 169 */ "signed", - /* 170 */ "plus_num", - /* 171 */ "minus_num", - /* 172 */ "scanpt", - /* 173 */ "ccons", - /* 174 */ "term", - /* 175 */ "expr", - /* 176 */ "onconf", - /* 177 */ "sortorder", - /* 178 */ "autoinc", - /* 179 */ "eidlist_opt", - /* 180 */ "refargs", - /* 181 */ "defer_subclause", - /* 182 */ "refarg", - /* 183 */ "refact", - /* 184 */ "init_deferred_pred_opt", - /* 185 */ "conslist", - /* 186 */ "tconscomma", - /* 187 */ "tcons", - /* 188 */ "sortlist", - /* 189 */ "eidlist", - /* 190 */ "defer_subclause_opt", - /* 191 */ "orconf", - /* 192 */ "resolvetype", - /* 193 */ "raisetype", - /* 194 */ "ifexists", - /* 195 */ "fullname", - /* 196 */ "selectnowith", - /* 197 */ "oneselect", - /* 198 */ "wqlist", - /* 199 */ "multiselect_op", - /* 200 */ "distinct", - /* 201 */ "selcollist", - /* 202 */ "from", - /* 203 */ "where_opt", - /* 204 */ "groupby_opt", - /* 205 */ "having_opt", - /* 206 */ "orderby_opt", - /* 207 */ "limit_opt", - /* 208 */ "values", - /* 209 */ "nexprlist", - /* 210 */ "exprlist", - /* 211 */ "sclp", - /* 212 */ "as", - /* 213 */ "seltablist", - /* 214 */ "stl_prefix", - /* 215 */ "joinop", - /* 216 */ "indexed_opt", - /* 217 */ "on_opt", - /* 218 */ "using_opt", - /* 219 */ "xfullname", - /* 220 */ "idlist", - /* 221 */ "with", - /* 222 */ "setlist", - /* 223 */ "insert_cmd", - /* 224 */ "idlist_opt", - /* 225 */ "upsert", - /* 226 */ "likeop", - /* 227 */ "between_op", - /* 228 */ "in_op", - /* 229 */ "paren_exprlist", - /* 230 */ "case_operand", - /* 231 */ "case_exprlist", - /* 232 */ "case_else", - /* 233 */ "uniqueflag", - /* 234 */ "collate", - /* 235 */ "nmnum", - /* 236 */ "trigger_decl", - /* 237 */ "trigger_cmd_list", - /* 238 */ "trigger_time", - /* 239 */ "trigger_event", - /* 240 */ "foreach_clause", - /* 241 */ "when_clause", - /* 242 */ "trigger_cmd", - /* 243 */ "trnm", - /* 244 */ "tridxby", - /* 245 */ "database_kw_opt", - /* 246 */ "key_opt", - /* 247 */ "add_column_fullname", - /* 248 */ "kwcolumn_opt", - /* 249 */ "create_vtab", - /* 250 */ "vtabarglist", - /* 251 */ "vtabarg", - /* 252 */ "vtabargtoken", - /* 253 */ "lp", - /* 254 */ "anylist", + /* 76 */ "ROWS", + /* 77 */ "TRIGGER", + /* 78 */ "VACUUM", + /* 79 */ "VIEW", + /* 80 */ "VIRTUAL", + /* 81 */ "WITH", + /* 82 */ "NULLS", + /* 83 */ "FIRST", + /* 84 */ "LAST", + /* 85 */ "CURRENT", + /* 86 */ "FOLLOWING", + /* 87 */ "PARTITION", + /* 88 */ "PRECEDING", + /* 89 */ "RANGE", + /* 90 */ "UNBOUNDED", + /* 91 */ "EXCLUDE", + /* 92 */ "GROUPS", + /* 93 */ "OTHERS", + /* 94 */ "TIES", + /* 95 */ "GENERATED", + /* 96 */ "ALWAYS", + /* 97 */ "MATERIALIZED", + /* 98 */ "REINDEX", + /* 99 */ "RENAME", + /* 100 */ "CTIME_KW", + /* 101 */ "ANY", + /* 102 */ "BITAND", + /* 103 */ "BITOR", + /* 104 */ "LSHIFT", + /* 105 */ "RSHIFT", + /* 106 */ "PLUS", + /* 107 */ "MINUS", + /* 108 */ "STAR", + /* 109 */ "SLASH", + /* 110 */ "REM", + /* 111 */ "CONCAT", + /* 112 */ "PTR", + /* 113 */ "COLLATE", + /* 114 */ "BITNOT", + /* 115 */ "ON", + /* 116 */ "INDEXED", + /* 117 */ "STRING", + /* 118 */ "JOIN_KW", + /* 119 */ "CONSTRAINT", + /* 120 */ "DEFAULT", + /* 121 */ "NULL", + /* 122 */ "PRIMARY", + /* 123 */ "UNIQUE", + /* 124 */ "CHECK", + /* 125 */ "REFERENCES", + /* 126 */ "AUTOINCR", + /* 127 */ "INSERT", + /* 128 */ "DELETE", + /* 129 */ "UPDATE", + /* 130 */ "SET", + /* 131 */ "DEFERRABLE", + /* 132 */ "FOREIGN", + /* 133 */ "DROP", + /* 134 */ "UNION", + /* 135 */ "ALL", + /* 136 */ "EXCEPT", + /* 137 */ "INTERSECT", + /* 138 */ "SELECT", + /* 139 */ "VALUES", + /* 140 */ "DISTINCT", + /* 141 */ "DOT", + /* 142 */ "FROM", + /* 143 */ "JOIN", + /* 144 */ "USING", + /* 145 */ "ORDER", + /* 146 */ "GROUP", + /* 147 */ "HAVING", + /* 148 */ "LIMIT", + /* 149 */ "WHERE", + /* 150 */ "RETURNING", + /* 151 */ "INTO", + /* 152 */ "NOTHING", + /* 153 */ "FLOAT", + /* 154 */ "BLOB", + /* 155 */ "INTEGER", + /* 156 */ "VARIABLE", + /* 157 */ "CASE", + /* 158 */ "WHEN", + /* 159 */ "THEN", + /* 160 */ "ELSE", + /* 161 */ "INDEX", + /* 162 */ "ALTER", + /* 163 */ "ADD", + /* 164 */ "WINDOW", + /* 165 */ "OVER", + /* 166 */ "FILTER", + /* 167 */ "COLUMN", + /* 168 */ "AGG_FUNCTION", + /* 169 */ "AGG_COLUMN", + /* 170 */ "TRUEFALSE", + /* 171 */ "ISNOT", + /* 172 */ "FUNCTION", + /* 173 */ "UMINUS", + /* 174 */ "UPLUS", + /* 175 */ "TRUTH", + /* 176 */ "REGISTER", + /* 177 */ "VECTOR", + /* 178 */ "SELECT_COLUMN", + /* 179 */ "IF_NULL_ROW", + /* 180 */ "ASTERISK", + /* 181 */ "SPAN", + /* 182 */ "ERROR", + /* 183 */ "SPACE", + /* 184 */ "ILLEGAL", + /* 185 */ "input", + /* 186 */ "cmdlist", + /* 187 */ "ecmd", + /* 188 */ "cmdx", + /* 189 */ "explain", + /* 190 */ "cmd", + /* 191 */ "transtype", + /* 192 */ "trans_opt", + /* 193 */ "nm", + /* 194 */ "savepoint_opt", + /* 195 */ "create_table", + /* 196 */ "create_table_args", + /* 197 */ "createkw", + /* 198 */ "temp", + /* 199 */ "ifnotexists", + /* 200 */ "dbnm", + /* 201 */ "columnlist", + /* 202 */ "conslist_opt", + /* 203 */ "table_option_set", + /* 204 */ "select", + /* 205 */ "table_option", + /* 206 */ "columnname", + /* 207 */ "carglist", + /* 208 */ "typetoken", + /* 209 */ "typename", + /* 210 */ "signed", + /* 211 */ "plus_num", + /* 212 */ "minus_num", + /* 213 */ "scanpt", + /* 214 */ "scantok", + /* 215 */ "ccons", + /* 216 */ "term", + /* 217 */ "expr", + /* 218 */ "onconf", + /* 219 */ "sortorder", + /* 220 */ "autoinc", + /* 221 */ "eidlist_opt", + /* 222 */ "refargs", + /* 223 */ "defer_subclause", + /* 224 */ "generated", + /* 225 */ "refarg", + /* 226 */ "refact", + /* 227 */ "init_deferred_pred_opt", + /* 228 */ "conslist", + /* 229 */ "tconscomma", + /* 230 */ "tcons", + /* 231 */ "sortlist", + /* 232 */ "eidlist", + /* 233 */ "defer_subclause_opt", + /* 234 */ "orconf", + /* 235 */ "resolvetype", + /* 236 */ "raisetype", + /* 237 */ "ifexists", + /* 238 */ "fullname", + /* 239 */ "selectnowith", + /* 240 */ "oneselect", + /* 241 */ "wqlist", + /* 242 */ "multiselect_op", + /* 243 */ "distinct", + /* 244 */ "selcollist", + /* 245 */ "from", + /* 246 */ "where_opt", + /* 247 */ "groupby_opt", + /* 248 */ "having_opt", + /* 249 */ "orderby_opt", + /* 250 */ "limit_opt", + /* 251 */ "window_clause", + /* 252 */ "values", + /* 253 */ "nexprlist", + /* 254 */ "sclp", + /* 255 */ "as", + /* 256 */ "seltablist", + /* 257 */ "stl_prefix", + /* 258 */ "joinop", + /* 259 */ "on_using", + /* 260 */ "indexed_by", + /* 261 */ "exprlist", + /* 262 */ "xfullname", + /* 263 */ "idlist", + /* 264 */ "indexed_opt", + /* 265 */ "nulls", + /* 266 */ "with", + /* 267 */ "where_opt_ret", + /* 268 */ "setlist", + /* 269 */ "insert_cmd", + /* 270 */ "idlist_opt", + /* 271 */ "upsert", + /* 272 */ "returning", + /* 273 */ "filter_over", + /* 274 */ "likeop", + /* 275 */ "between_op", + /* 276 */ "in_op", + /* 277 */ "paren_exprlist", + /* 278 */ "case_operand", + /* 279 */ "case_exprlist", + /* 280 */ "case_else", + /* 281 */ "uniqueflag", + /* 282 */ "collate", + /* 283 */ "vinto", + /* 284 */ "nmnum", + /* 285 */ "trigger_decl", + /* 286 */ "trigger_cmd_list", + /* 287 */ "trigger_time", + /* 288 */ "trigger_event", + /* 289 */ "foreach_clause", + /* 290 */ "when_clause", + /* 291 */ "trigger_cmd", + /* 292 */ "trnm", + /* 293 */ "tridxby", + /* 294 */ "database_kw_opt", + /* 295 */ "key_opt", + /* 296 */ "add_column_fullname", + /* 297 */ "kwcolumn_opt", + /* 298 */ "create_vtab", + /* 299 */ "vtabarglist", + /* 300 */ "vtabarg", + /* 301 */ "vtabargtoken", + /* 302 */ "lp", + /* 303 */ "anylist", + /* 304 */ "wqitem", + /* 305 */ "wqas", + /* 306 */ "windowdefn_list", + /* 307 */ "windowdefn", + /* 308 */ "window", + /* 309 */ "frame_opt", + /* 310 */ "part_opt", + /* 311 */ "filter_clause", + /* 312 */ "over_clause", + /* 313 */ "range_or_rows", + /* 314 */ "frame_bound", + /* 315 */ "frame_bound_s", + /* 316 */ "frame_bound_e", + /* 317 */ "frame_exclude_opt", + /* 318 */ "frame_exclude", }; #endif /* defined(YYCOVERAGE) || !defined(NDEBUG) */ @@ -142688,328 +171056,390 @@ static const char *const yyRuleName[] = { /* 16 */ "ifnotexists ::= IF NOT EXISTS", /* 17 */ "temp ::= TEMP", /* 18 */ "temp ::=", - /* 19 */ "create_table_args ::= LP columnlist conslist_opt RP table_options", + /* 19 */ "create_table_args ::= LP columnlist conslist_opt RP table_option_set", /* 20 */ "create_table_args ::= AS select", - /* 21 */ "table_options ::=", - /* 22 */ "table_options ::= WITHOUT nm", - /* 23 */ "columnname ::= nm typetoken", - /* 24 */ "typetoken ::=", - /* 25 */ "typetoken ::= typename LP signed RP", - /* 26 */ "typetoken ::= typename LP signed COMMA signed RP", - /* 27 */ "typename ::= typename ID|STRING", - /* 28 */ "scanpt ::=", - /* 29 */ "ccons ::= CONSTRAINT nm", - /* 30 */ "ccons ::= DEFAULT scanpt term scanpt", - /* 31 */ "ccons ::= DEFAULT LP expr RP", - /* 32 */ "ccons ::= DEFAULT PLUS term scanpt", - /* 33 */ "ccons ::= DEFAULT MINUS term scanpt", - /* 34 */ "ccons ::= DEFAULT scanpt ID|INDEXED", - /* 35 */ "ccons ::= NOT NULL onconf", - /* 36 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc", - /* 37 */ "ccons ::= UNIQUE onconf", - /* 38 */ "ccons ::= CHECK LP expr RP", - /* 39 */ "ccons ::= REFERENCES nm eidlist_opt refargs", - /* 40 */ "ccons ::= defer_subclause", - /* 41 */ "ccons ::= COLLATE ID|STRING", - /* 42 */ "autoinc ::=", - /* 43 */ "autoinc ::= AUTOINCR", - /* 44 */ "refargs ::=", - /* 45 */ "refargs ::= refargs refarg", - /* 46 */ "refarg ::= MATCH nm", - /* 47 */ "refarg ::= ON INSERT refact", - /* 48 */ "refarg ::= ON DELETE refact", - /* 49 */ "refarg ::= ON UPDATE refact", - /* 50 */ "refact ::= SET NULL", - /* 51 */ "refact ::= SET DEFAULT", - /* 52 */ "refact ::= CASCADE", - /* 53 */ "refact ::= RESTRICT", - /* 54 */ "refact ::= NO ACTION", - /* 55 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt", - /* 56 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt", - /* 57 */ "init_deferred_pred_opt ::=", - /* 58 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED", - /* 59 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE", - /* 60 */ "conslist_opt ::=", - /* 61 */ "tconscomma ::= COMMA", - /* 62 */ "tcons ::= CONSTRAINT nm", - /* 63 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf", - /* 64 */ "tcons ::= UNIQUE LP sortlist RP onconf", - /* 65 */ "tcons ::= CHECK LP expr RP onconf", - /* 66 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt", - /* 67 */ "defer_subclause_opt ::=", - /* 68 */ "onconf ::=", - /* 69 */ "onconf ::= ON CONFLICT resolvetype", - /* 70 */ "orconf ::=", - /* 71 */ "orconf ::= OR resolvetype", - /* 72 */ "resolvetype ::= IGNORE", - /* 73 */ "resolvetype ::= REPLACE", - /* 74 */ "cmd ::= DROP TABLE ifexists fullname", - /* 75 */ "ifexists ::= IF EXISTS", - /* 76 */ "ifexists ::=", - /* 77 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select", - /* 78 */ "cmd ::= DROP VIEW ifexists fullname", - /* 79 */ "cmd ::= select", - /* 80 */ "select ::= WITH wqlist selectnowith", - /* 81 */ "select ::= WITH RECURSIVE wqlist selectnowith", - /* 82 */ "select ::= selectnowith", - /* 83 */ "selectnowith ::= selectnowith multiselect_op oneselect", - /* 84 */ "multiselect_op ::= UNION", - /* 85 */ "multiselect_op ::= UNION ALL", - /* 86 */ "multiselect_op ::= EXCEPT|INTERSECT", - /* 87 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt", - /* 88 */ "values ::= VALUES LP nexprlist RP", - /* 89 */ "values ::= values COMMA LP exprlist RP", - /* 90 */ "distinct ::= DISTINCT", - /* 91 */ "distinct ::= ALL", - /* 92 */ "distinct ::=", - /* 93 */ "sclp ::=", - /* 94 */ "selcollist ::= sclp scanpt expr scanpt as", - /* 95 */ "selcollist ::= sclp scanpt STAR", - /* 96 */ "selcollist ::= sclp scanpt nm DOT STAR", - /* 97 */ "as ::= AS nm", - /* 98 */ "as ::=", - /* 99 */ "from ::=", - /* 100 */ "from ::= FROM seltablist", - /* 101 */ "stl_prefix ::= seltablist joinop", - /* 102 */ "stl_prefix ::=", - /* 103 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt", - /* 104 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt", - /* 105 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt", - /* 106 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt", - /* 107 */ "dbnm ::=", - /* 108 */ "dbnm ::= DOT nm", - /* 109 */ "fullname ::= nm", - /* 110 */ "fullname ::= nm DOT nm", - /* 111 */ "xfullname ::= nm", - /* 112 */ "xfullname ::= nm DOT nm", - /* 113 */ "xfullname ::= nm DOT nm AS nm", - /* 114 */ "xfullname ::= nm AS nm", - /* 115 */ "joinop ::= COMMA|JOIN", - /* 116 */ "joinop ::= JOIN_KW JOIN", - /* 117 */ "joinop ::= JOIN_KW nm JOIN", - /* 118 */ "joinop ::= JOIN_KW nm nm JOIN", - /* 119 */ "on_opt ::= ON expr", - /* 120 */ "on_opt ::=", - /* 121 */ "indexed_opt ::=", - /* 122 */ "indexed_opt ::= INDEXED BY nm", - /* 123 */ "indexed_opt ::= NOT INDEXED", - /* 124 */ "using_opt ::= USING LP idlist RP", - /* 125 */ "using_opt ::=", - /* 126 */ "orderby_opt ::=", - /* 127 */ "orderby_opt ::= ORDER BY sortlist", - /* 128 */ "sortlist ::= sortlist COMMA expr sortorder", - /* 129 */ "sortlist ::= expr sortorder", - /* 130 */ "sortorder ::= ASC", - /* 131 */ "sortorder ::= DESC", - /* 132 */ "sortorder ::=", - /* 133 */ "groupby_opt ::=", - /* 134 */ "groupby_opt ::= GROUP BY nexprlist", - /* 135 */ "having_opt ::=", - /* 136 */ "having_opt ::= HAVING expr", - /* 137 */ "limit_opt ::=", - /* 138 */ "limit_opt ::= LIMIT expr", - /* 139 */ "limit_opt ::= LIMIT expr OFFSET expr", - /* 140 */ "limit_opt ::= LIMIT expr COMMA expr", - /* 141 */ "cmd ::= with DELETE FROM xfullname indexed_opt where_opt", - /* 142 */ "where_opt ::=", - /* 143 */ "where_opt ::= WHERE expr", - /* 144 */ "cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt", - /* 145 */ "setlist ::= setlist COMMA nm EQ expr", - /* 146 */ "setlist ::= setlist COMMA LP idlist RP EQ expr", - /* 147 */ "setlist ::= nm EQ expr", - /* 148 */ "setlist ::= LP idlist RP EQ expr", - /* 149 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert", - /* 150 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES", - /* 151 */ "upsert ::=", - /* 152 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt", - /* 153 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING", - /* 154 */ "upsert ::= ON CONFLICT DO NOTHING", - /* 155 */ "insert_cmd ::= INSERT orconf", - /* 156 */ "insert_cmd ::= REPLACE", - /* 157 */ "idlist_opt ::=", - /* 158 */ "idlist_opt ::= LP idlist RP", - /* 159 */ "idlist ::= idlist COMMA nm", - /* 160 */ "idlist ::= nm", - /* 161 */ "expr ::= LP expr RP", - /* 162 */ "expr ::= ID|INDEXED", - /* 163 */ "expr ::= JOIN_KW", - /* 164 */ "expr ::= nm DOT nm", - /* 165 */ "expr ::= nm DOT nm DOT nm", - /* 166 */ "term ::= NULL|FLOAT|BLOB", - /* 167 */ "term ::= STRING", - /* 168 */ "term ::= INTEGER", - /* 169 */ "expr ::= VARIABLE", - /* 170 */ "expr ::= expr COLLATE ID|STRING", - /* 171 */ "expr ::= CAST LP expr AS typetoken RP", - /* 172 */ "expr ::= ID|INDEXED LP distinct exprlist RP", - /* 173 */ "expr ::= ID|INDEXED LP STAR RP", - /* 174 */ "term ::= CTIME_KW", - /* 175 */ "expr ::= LP nexprlist COMMA expr RP", - /* 176 */ "expr ::= expr AND expr", - /* 177 */ "expr ::= expr OR expr", - /* 178 */ "expr ::= expr LT|GT|GE|LE expr", - /* 179 */ "expr ::= expr EQ|NE expr", - /* 180 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", - /* 181 */ "expr ::= expr PLUS|MINUS expr", - /* 182 */ "expr ::= expr STAR|SLASH|REM expr", - /* 183 */ "expr ::= expr CONCAT expr", - /* 184 */ "likeop ::= NOT LIKE_KW|MATCH", - /* 185 */ "expr ::= expr likeop expr", - /* 186 */ "expr ::= expr likeop expr ESCAPE expr", - /* 187 */ "expr ::= expr ISNULL|NOTNULL", - /* 188 */ "expr ::= expr NOT NULL", - /* 189 */ "expr ::= expr IS expr", - /* 190 */ "expr ::= expr IS NOT expr", - /* 191 */ "expr ::= NOT expr", - /* 192 */ "expr ::= BITNOT expr", - /* 193 */ "expr ::= MINUS expr", - /* 194 */ "expr ::= PLUS expr", - /* 195 */ "between_op ::= BETWEEN", - /* 196 */ "between_op ::= NOT BETWEEN", - /* 197 */ "expr ::= expr between_op expr AND expr", - /* 198 */ "in_op ::= IN", - /* 199 */ "in_op ::= NOT IN", - /* 200 */ "expr ::= expr in_op LP exprlist RP", - /* 201 */ "expr ::= LP select RP", - /* 202 */ "expr ::= expr in_op LP select RP", - /* 203 */ "expr ::= expr in_op nm dbnm paren_exprlist", - /* 204 */ "expr ::= EXISTS LP select RP", - /* 205 */ "expr ::= CASE case_operand case_exprlist case_else END", - /* 206 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", - /* 207 */ "case_exprlist ::= WHEN expr THEN expr", - /* 208 */ "case_else ::= ELSE expr", - /* 209 */ "case_else ::=", - /* 210 */ "case_operand ::= expr", - /* 211 */ "case_operand ::=", - /* 212 */ "exprlist ::=", - /* 213 */ "nexprlist ::= nexprlist COMMA expr", - /* 214 */ "nexprlist ::= expr", - /* 215 */ "paren_exprlist ::=", - /* 216 */ "paren_exprlist ::= LP exprlist RP", - /* 217 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt", - /* 218 */ "uniqueflag ::= UNIQUE", - /* 219 */ "uniqueflag ::=", - /* 220 */ "eidlist_opt ::=", - /* 221 */ "eidlist_opt ::= LP eidlist RP", - /* 222 */ "eidlist ::= eidlist COMMA nm collate sortorder", - /* 223 */ "eidlist ::= nm collate sortorder", - /* 224 */ "collate ::=", - /* 225 */ "collate ::= COLLATE ID|STRING", - /* 226 */ "cmd ::= DROP INDEX ifexists fullname", - /* 227 */ "cmd ::= VACUUM", - /* 228 */ "cmd ::= VACUUM nm", - /* 229 */ "cmd ::= PRAGMA nm dbnm", - /* 230 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", - /* 231 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", - /* 232 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", - /* 233 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", - /* 234 */ "plus_num ::= PLUS INTEGER|FLOAT", - /* 235 */ "minus_num ::= MINUS INTEGER|FLOAT", - /* 236 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", - /* 237 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", - /* 238 */ "trigger_time ::= BEFORE|AFTER", - /* 239 */ "trigger_time ::= INSTEAD OF", - /* 240 */ "trigger_time ::=", - /* 241 */ "trigger_event ::= DELETE|INSERT", - /* 242 */ "trigger_event ::= UPDATE", - /* 243 */ "trigger_event ::= UPDATE OF idlist", - /* 244 */ "when_clause ::=", - /* 245 */ "when_clause ::= WHEN expr", - /* 246 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", - /* 247 */ "trigger_cmd_list ::= trigger_cmd SEMI", - /* 248 */ "trnm ::= nm DOT nm", - /* 249 */ "tridxby ::= INDEXED BY nm", - /* 250 */ "tridxby ::= NOT INDEXED", - /* 251 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt", - /* 252 */ "trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt", - /* 253 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt", - /* 254 */ "trigger_cmd ::= scanpt select scanpt", - /* 255 */ "expr ::= RAISE LP IGNORE RP", - /* 256 */ "expr ::= RAISE LP raisetype COMMA nm RP", - /* 257 */ "raisetype ::= ROLLBACK", - /* 258 */ "raisetype ::= ABORT", - /* 259 */ "raisetype ::= FAIL", - /* 260 */ "cmd ::= DROP TRIGGER ifexists fullname", - /* 261 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", - /* 262 */ "cmd ::= DETACH database_kw_opt expr", - /* 263 */ "key_opt ::=", - /* 264 */ "key_opt ::= KEY expr", - /* 265 */ "cmd ::= REINDEX", - /* 266 */ "cmd ::= REINDEX nm dbnm", - /* 267 */ "cmd ::= ANALYZE", - /* 268 */ "cmd ::= ANALYZE nm dbnm", - /* 269 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", - /* 270 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist", - /* 271 */ "add_column_fullname ::= fullname", - /* 272 */ "cmd ::= create_vtab", - /* 273 */ "cmd ::= create_vtab LP vtabarglist RP", - /* 274 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", - /* 275 */ "vtabarg ::=", - /* 276 */ "vtabargtoken ::= ANY", - /* 277 */ "vtabargtoken ::= lp anylist RP", - /* 278 */ "lp ::= LP", - /* 279 */ "with ::= WITH wqlist", - /* 280 */ "with ::= WITH RECURSIVE wqlist", - /* 281 */ "wqlist ::= nm eidlist_opt AS LP select RP", - /* 282 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP", - /* 283 */ "input ::= cmdlist", - /* 284 */ "cmdlist ::= cmdlist ecmd", - /* 285 */ "cmdlist ::= ecmd", - /* 286 */ "ecmd ::= SEMI", - /* 287 */ "ecmd ::= cmdx SEMI", - /* 288 */ "ecmd ::= explain cmdx", - /* 289 */ "trans_opt ::=", - /* 290 */ "trans_opt ::= TRANSACTION", - /* 291 */ "trans_opt ::= TRANSACTION nm", - /* 292 */ "savepoint_opt ::= SAVEPOINT", - /* 293 */ "savepoint_opt ::=", - /* 294 */ "cmd ::= create_table create_table_args", - /* 295 */ "columnlist ::= columnlist COMMA columnname carglist", - /* 296 */ "columnlist ::= columnname carglist", - /* 297 */ "nm ::= ID|INDEXED", - /* 298 */ "nm ::= STRING", - /* 299 */ "nm ::= JOIN_KW", - /* 300 */ "typetoken ::= typename", - /* 301 */ "typename ::= ID|STRING", - /* 302 */ "signed ::= plus_num", - /* 303 */ "signed ::= minus_num", - /* 304 */ "carglist ::= carglist ccons", - /* 305 */ "carglist ::=", - /* 306 */ "ccons ::= NULL onconf", - /* 307 */ "conslist_opt ::= COMMA conslist", - /* 308 */ "conslist ::= conslist tconscomma tcons", - /* 309 */ "conslist ::= tcons", - /* 310 */ "tconscomma ::=", - /* 311 */ "defer_subclause_opt ::= defer_subclause", - /* 312 */ "resolvetype ::= raisetype", - /* 313 */ "selectnowith ::= oneselect", - /* 314 */ "oneselect ::= values", - /* 315 */ "sclp ::= selcollist COMMA", - /* 316 */ "as ::= ID|STRING", - /* 317 */ "expr ::= term", - /* 318 */ "likeop ::= LIKE_KW|MATCH", - /* 319 */ "exprlist ::= nexprlist", - /* 320 */ "nmnum ::= plus_num", - /* 321 */ "nmnum ::= nm", - /* 322 */ "nmnum ::= ON", - /* 323 */ "nmnum ::= DELETE", - /* 324 */ "nmnum ::= DEFAULT", - /* 325 */ "plus_num ::= INTEGER|FLOAT", - /* 326 */ "foreach_clause ::=", - /* 327 */ "foreach_clause ::= FOR EACH ROW", - /* 328 */ "trnm ::= nm", - /* 329 */ "tridxby ::=", - /* 330 */ "database_kw_opt ::= DATABASE", - /* 331 */ "database_kw_opt ::=", - /* 332 */ "kwcolumn_opt ::=", - /* 333 */ "kwcolumn_opt ::= COLUMNKW", - /* 334 */ "vtabarglist ::= vtabarg", - /* 335 */ "vtabarglist ::= vtabarglist COMMA vtabarg", - /* 336 */ "vtabarg ::= vtabarg vtabargtoken", - /* 337 */ "anylist ::=", - /* 338 */ "anylist ::= anylist LP anylist RP", - /* 339 */ "anylist ::= anylist ANY", - /* 340 */ "with ::=", + /* 21 */ "table_option_set ::=", + /* 22 */ "table_option_set ::= table_option_set COMMA table_option", + /* 23 */ "table_option ::= WITHOUT nm", + /* 24 */ "table_option ::= nm", + /* 25 */ "columnname ::= nm typetoken", + /* 26 */ "typetoken ::=", + /* 27 */ "typetoken ::= typename LP signed RP", + /* 28 */ "typetoken ::= typename LP signed COMMA signed RP", + /* 29 */ "typename ::= typename ID|STRING", + /* 30 */ "scanpt ::=", + /* 31 */ "scantok ::=", + /* 32 */ "ccons ::= CONSTRAINT nm", + /* 33 */ "ccons ::= DEFAULT scantok term", + /* 34 */ "ccons ::= DEFAULT LP expr RP", + /* 35 */ "ccons ::= DEFAULT PLUS scantok term", + /* 36 */ "ccons ::= DEFAULT MINUS scantok term", + /* 37 */ "ccons ::= DEFAULT scantok ID|INDEXED", + /* 38 */ "ccons ::= NOT NULL onconf", + /* 39 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc", + /* 40 */ "ccons ::= UNIQUE onconf", + /* 41 */ "ccons ::= CHECK LP expr RP", + /* 42 */ "ccons ::= REFERENCES nm eidlist_opt refargs", + /* 43 */ "ccons ::= defer_subclause", + /* 44 */ "ccons ::= COLLATE ID|STRING", + /* 45 */ "generated ::= LP expr RP", + /* 46 */ "generated ::= LP expr RP ID", + /* 47 */ "autoinc ::=", + /* 48 */ "autoinc ::= AUTOINCR", + /* 49 */ "refargs ::=", + /* 50 */ "refargs ::= refargs refarg", + /* 51 */ "refarg ::= MATCH nm", + /* 52 */ "refarg ::= ON INSERT refact", + /* 53 */ "refarg ::= ON DELETE refact", + /* 54 */ "refarg ::= ON UPDATE refact", + /* 55 */ "refact ::= SET NULL", + /* 56 */ "refact ::= SET DEFAULT", + /* 57 */ "refact ::= CASCADE", + /* 58 */ "refact ::= RESTRICT", + /* 59 */ "refact ::= NO ACTION", + /* 60 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt", + /* 61 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt", + /* 62 */ "init_deferred_pred_opt ::=", + /* 63 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED", + /* 64 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE", + /* 65 */ "conslist_opt ::=", + /* 66 */ "tconscomma ::= COMMA", + /* 67 */ "tcons ::= CONSTRAINT nm", + /* 68 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf", + /* 69 */ "tcons ::= UNIQUE LP sortlist RP onconf", + /* 70 */ "tcons ::= CHECK LP expr RP onconf", + /* 71 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt", + /* 72 */ "defer_subclause_opt ::=", + /* 73 */ "onconf ::=", + /* 74 */ "onconf ::= ON CONFLICT resolvetype", + /* 75 */ "orconf ::=", + /* 76 */ "orconf ::= OR resolvetype", + /* 77 */ "resolvetype ::= IGNORE", + /* 78 */ "resolvetype ::= REPLACE", + /* 79 */ "cmd ::= DROP TABLE ifexists fullname", + /* 80 */ "ifexists ::= IF EXISTS", + /* 81 */ "ifexists ::=", + /* 82 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select", + /* 83 */ "cmd ::= DROP VIEW ifexists fullname", + /* 84 */ "cmd ::= select", + /* 85 */ "select ::= WITH wqlist selectnowith", + /* 86 */ "select ::= WITH RECURSIVE wqlist selectnowith", + /* 87 */ "select ::= selectnowith", + /* 88 */ "selectnowith ::= selectnowith multiselect_op oneselect", + /* 89 */ "multiselect_op ::= UNION", + /* 90 */ "multiselect_op ::= UNION ALL", + /* 91 */ "multiselect_op ::= EXCEPT|INTERSECT", + /* 92 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt", + /* 93 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt", + /* 94 */ "values ::= VALUES LP nexprlist RP", + /* 95 */ "values ::= values COMMA LP nexprlist RP", + /* 96 */ "distinct ::= DISTINCT", + /* 97 */ "distinct ::= ALL", + /* 98 */ "distinct ::=", + /* 99 */ "sclp ::=", + /* 100 */ "selcollist ::= sclp scanpt expr scanpt as", + /* 101 */ "selcollist ::= sclp scanpt STAR", + /* 102 */ "selcollist ::= sclp scanpt nm DOT STAR", + /* 103 */ "as ::= AS nm", + /* 104 */ "as ::=", + /* 105 */ "from ::=", + /* 106 */ "from ::= FROM seltablist", + /* 107 */ "stl_prefix ::= seltablist joinop", + /* 108 */ "stl_prefix ::=", + /* 109 */ "seltablist ::= stl_prefix nm dbnm as on_using", + /* 110 */ "seltablist ::= stl_prefix nm dbnm as indexed_by on_using", + /* 111 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_using", + /* 112 */ "seltablist ::= stl_prefix LP select RP as on_using", + /* 113 */ "seltablist ::= stl_prefix LP seltablist RP as on_using", + /* 114 */ "dbnm ::=", + /* 115 */ "dbnm ::= DOT nm", + /* 116 */ "fullname ::= nm", + /* 117 */ "fullname ::= nm DOT nm", + /* 118 */ "xfullname ::= nm", + /* 119 */ "xfullname ::= nm DOT nm", + /* 120 */ "xfullname ::= nm DOT nm AS nm", + /* 121 */ "xfullname ::= nm AS nm", + /* 122 */ "joinop ::= COMMA|JOIN", + /* 123 */ "joinop ::= JOIN_KW JOIN", + /* 124 */ "joinop ::= JOIN_KW nm JOIN", + /* 125 */ "joinop ::= JOIN_KW nm nm JOIN", + /* 126 */ "on_using ::= ON expr", + /* 127 */ "on_using ::= USING LP idlist RP", + /* 128 */ "on_using ::=", + /* 129 */ "indexed_opt ::=", + /* 130 */ "indexed_by ::= INDEXED BY nm", + /* 131 */ "indexed_by ::= NOT INDEXED", + /* 132 */ "orderby_opt ::=", + /* 133 */ "orderby_opt ::= ORDER BY sortlist", + /* 134 */ "sortlist ::= sortlist COMMA expr sortorder nulls", + /* 135 */ "sortlist ::= expr sortorder nulls", + /* 136 */ "sortorder ::= ASC", + /* 137 */ "sortorder ::= DESC", + /* 138 */ "sortorder ::=", + /* 139 */ "nulls ::= NULLS FIRST", + /* 140 */ "nulls ::= NULLS LAST", + /* 141 */ "nulls ::=", + /* 142 */ "groupby_opt ::=", + /* 143 */ "groupby_opt ::= GROUP BY nexprlist", + /* 144 */ "having_opt ::=", + /* 145 */ "having_opt ::= HAVING expr", + /* 146 */ "limit_opt ::=", + /* 147 */ "limit_opt ::= LIMIT expr", + /* 148 */ "limit_opt ::= LIMIT expr OFFSET expr", + /* 149 */ "limit_opt ::= LIMIT expr COMMA expr", + /* 150 */ "cmd ::= with DELETE FROM xfullname indexed_opt where_opt_ret", + /* 151 */ "where_opt ::=", + /* 152 */ "where_opt ::= WHERE expr", + /* 153 */ "where_opt_ret ::=", + /* 154 */ "where_opt_ret ::= WHERE expr", + /* 155 */ "where_opt_ret ::= RETURNING selcollist", + /* 156 */ "where_opt_ret ::= WHERE expr RETURNING selcollist", + /* 157 */ "cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt_ret", + /* 158 */ "setlist ::= setlist COMMA nm EQ expr", + /* 159 */ "setlist ::= setlist COMMA LP idlist RP EQ expr", + /* 160 */ "setlist ::= nm EQ expr", + /* 161 */ "setlist ::= LP idlist RP EQ expr", + /* 162 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert", + /* 163 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES returning", + /* 164 */ "upsert ::=", + /* 165 */ "upsert ::= RETURNING selcollist", + /* 166 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt upsert", + /* 167 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING upsert", + /* 168 */ "upsert ::= ON CONFLICT DO NOTHING returning", + /* 169 */ "upsert ::= ON CONFLICT DO UPDATE SET setlist where_opt returning", + /* 170 */ "returning ::= RETURNING selcollist", + /* 171 */ "insert_cmd ::= INSERT orconf", + /* 172 */ "insert_cmd ::= REPLACE", + /* 173 */ "idlist_opt ::=", + /* 174 */ "idlist_opt ::= LP idlist RP", + /* 175 */ "idlist ::= idlist COMMA nm", + /* 176 */ "idlist ::= nm", + /* 177 */ "expr ::= LP expr RP", + /* 178 */ "expr ::= ID|INDEXED|JOIN_KW", + /* 179 */ "expr ::= nm DOT nm", + /* 180 */ "expr ::= nm DOT nm DOT nm", + /* 181 */ "term ::= NULL|FLOAT|BLOB", + /* 182 */ "term ::= STRING", + /* 183 */ "term ::= INTEGER", + /* 184 */ "expr ::= VARIABLE", + /* 185 */ "expr ::= expr COLLATE ID|STRING", + /* 186 */ "expr ::= CAST LP expr AS typetoken RP", + /* 187 */ "expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP", + /* 188 */ "expr ::= ID|INDEXED|JOIN_KW LP STAR RP", + /* 189 */ "expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP filter_over", + /* 190 */ "expr ::= ID|INDEXED|JOIN_KW LP STAR RP filter_over", + /* 191 */ "term ::= CTIME_KW", + /* 192 */ "expr ::= LP nexprlist COMMA expr RP", + /* 193 */ "expr ::= expr AND expr", + /* 194 */ "expr ::= expr OR expr", + /* 195 */ "expr ::= expr LT|GT|GE|LE expr", + /* 196 */ "expr ::= expr EQ|NE expr", + /* 197 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", + /* 198 */ "expr ::= expr PLUS|MINUS expr", + /* 199 */ "expr ::= expr STAR|SLASH|REM expr", + /* 200 */ "expr ::= expr CONCAT expr", + /* 201 */ "likeop ::= NOT LIKE_KW|MATCH", + /* 202 */ "expr ::= expr likeop expr", + /* 203 */ "expr ::= expr likeop expr ESCAPE expr", + /* 204 */ "expr ::= expr ISNULL|NOTNULL", + /* 205 */ "expr ::= expr NOT NULL", + /* 206 */ "expr ::= expr IS expr", + /* 207 */ "expr ::= expr IS NOT expr", + /* 208 */ "expr ::= expr IS NOT DISTINCT FROM expr", + /* 209 */ "expr ::= expr IS DISTINCT FROM expr", + /* 210 */ "expr ::= NOT expr", + /* 211 */ "expr ::= BITNOT expr", + /* 212 */ "expr ::= PLUS|MINUS expr", + /* 213 */ "expr ::= expr PTR expr", + /* 214 */ "between_op ::= BETWEEN", + /* 215 */ "between_op ::= NOT BETWEEN", + /* 216 */ "expr ::= expr between_op expr AND expr", + /* 217 */ "in_op ::= IN", + /* 218 */ "in_op ::= NOT IN", + /* 219 */ "expr ::= expr in_op LP exprlist RP", + /* 220 */ "expr ::= LP select RP", + /* 221 */ "expr ::= expr in_op LP select RP", + /* 222 */ "expr ::= expr in_op nm dbnm paren_exprlist", + /* 223 */ "expr ::= EXISTS LP select RP", + /* 224 */ "expr ::= CASE case_operand case_exprlist case_else END", + /* 225 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", + /* 226 */ "case_exprlist ::= WHEN expr THEN expr", + /* 227 */ "case_else ::= ELSE expr", + /* 228 */ "case_else ::=", + /* 229 */ "case_operand ::=", + /* 230 */ "exprlist ::=", + /* 231 */ "nexprlist ::= nexprlist COMMA expr", + /* 232 */ "nexprlist ::= expr", + /* 233 */ "paren_exprlist ::=", + /* 234 */ "paren_exprlist ::= LP exprlist RP", + /* 235 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt", + /* 236 */ "uniqueflag ::= UNIQUE", + /* 237 */ "uniqueflag ::=", + /* 238 */ "eidlist_opt ::=", + /* 239 */ "eidlist_opt ::= LP eidlist RP", + /* 240 */ "eidlist ::= eidlist COMMA nm collate sortorder", + /* 241 */ "eidlist ::= nm collate sortorder", + /* 242 */ "collate ::=", + /* 243 */ "collate ::= COLLATE ID|STRING", + /* 244 */ "cmd ::= DROP INDEX ifexists fullname", + /* 245 */ "cmd ::= VACUUM vinto", + /* 246 */ "cmd ::= VACUUM nm vinto", + /* 247 */ "vinto ::= INTO expr", + /* 248 */ "vinto ::=", + /* 249 */ "cmd ::= PRAGMA nm dbnm", + /* 250 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", + /* 251 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", + /* 252 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", + /* 253 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", + /* 254 */ "plus_num ::= PLUS INTEGER|FLOAT", + /* 255 */ "minus_num ::= MINUS INTEGER|FLOAT", + /* 256 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", + /* 257 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", + /* 258 */ "trigger_time ::= BEFORE|AFTER", + /* 259 */ "trigger_time ::= INSTEAD OF", + /* 260 */ "trigger_time ::=", + /* 261 */ "trigger_event ::= DELETE|INSERT", + /* 262 */ "trigger_event ::= UPDATE", + /* 263 */ "trigger_event ::= UPDATE OF idlist", + /* 264 */ "when_clause ::=", + /* 265 */ "when_clause ::= WHEN expr", + /* 266 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", + /* 267 */ "trigger_cmd_list ::= trigger_cmd SEMI", + /* 268 */ "trnm ::= nm DOT nm", + /* 269 */ "tridxby ::= INDEXED BY nm", + /* 270 */ "tridxby ::= NOT INDEXED", + /* 271 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt", + /* 272 */ "trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt", + /* 273 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt", + /* 274 */ "trigger_cmd ::= scanpt select scanpt", + /* 275 */ "expr ::= RAISE LP IGNORE RP", + /* 276 */ "expr ::= RAISE LP raisetype COMMA nm RP", + /* 277 */ "raisetype ::= ROLLBACK", + /* 278 */ "raisetype ::= ABORT", + /* 279 */ "raisetype ::= FAIL", + /* 280 */ "cmd ::= DROP TRIGGER ifexists fullname", + /* 281 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", + /* 282 */ "cmd ::= DETACH database_kw_opt expr", + /* 283 */ "key_opt ::=", + /* 284 */ "key_opt ::= KEY expr", + /* 285 */ "cmd ::= REINDEX", + /* 286 */ "cmd ::= REINDEX nm dbnm", + /* 287 */ "cmd ::= ANALYZE", + /* 288 */ "cmd ::= ANALYZE nm dbnm", + /* 289 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", + /* 290 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist", + /* 291 */ "cmd ::= ALTER TABLE fullname DROP kwcolumn_opt nm", + /* 292 */ "add_column_fullname ::= fullname", + /* 293 */ "cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm", + /* 294 */ "cmd ::= create_vtab", + /* 295 */ "cmd ::= create_vtab LP vtabarglist RP", + /* 296 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", + /* 297 */ "vtabarg ::=", + /* 298 */ "vtabargtoken ::= ANY", + /* 299 */ "vtabargtoken ::= lp anylist RP", + /* 300 */ "lp ::= LP", + /* 301 */ "with ::= WITH wqlist", + /* 302 */ "with ::= WITH RECURSIVE wqlist", + /* 303 */ "wqas ::= AS", + /* 304 */ "wqas ::= AS MATERIALIZED", + /* 305 */ "wqas ::= AS NOT MATERIALIZED", + /* 306 */ "wqitem ::= nm eidlist_opt wqas LP select RP", + /* 307 */ "wqlist ::= wqitem", + /* 308 */ "wqlist ::= wqlist COMMA wqitem", + /* 309 */ "windowdefn_list ::= windowdefn_list COMMA windowdefn", + /* 310 */ "windowdefn ::= nm AS LP window RP", + /* 311 */ "window ::= PARTITION BY nexprlist orderby_opt frame_opt", + /* 312 */ "window ::= nm PARTITION BY nexprlist orderby_opt frame_opt", + /* 313 */ "window ::= ORDER BY sortlist frame_opt", + /* 314 */ "window ::= nm ORDER BY sortlist frame_opt", + /* 315 */ "window ::= nm frame_opt", + /* 316 */ "frame_opt ::=", + /* 317 */ "frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt", + /* 318 */ "frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt", + /* 319 */ "range_or_rows ::= RANGE|ROWS|GROUPS", + /* 320 */ "frame_bound_s ::= frame_bound", + /* 321 */ "frame_bound_s ::= UNBOUNDED PRECEDING", + /* 322 */ "frame_bound_e ::= frame_bound", + /* 323 */ "frame_bound_e ::= UNBOUNDED FOLLOWING", + /* 324 */ "frame_bound ::= expr PRECEDING|FOLLOWING", + /* 325 */ "frame_bound ::= CURRENT ROW", + /* 326 */ "frame_exclude_opt ::=", + /* 327 */ "frame_exclude_opt ::= EXCLUDE frame_exclude", + /* 328 */ "frame_exclude ::= NO OTHERS", + /* 329 */ "frame_exclude ::= CURRENT ROW", + /* 330 */ "frame_exclude ::= GROUP|TIES", + /* 331 */ "window_clause ::= WINDOW windowdefn_list", + /* 332 */ "filter_over ::= filter_clause over_clause", + /* 333 */ "filter_over ::= over_clause", + /* 334 */ "filter_over ::= filter_clause", + /* 335 */ "over_clause ::= OVER LP window RP", + /* 336 */ "over_clause ::= OVER nm", + /* 337 */ "filter_clause ::= FILTER LP WHERE expr RP", + /* 338 */ "input ::= cmdlist", + /* 339 */ "cmdlist ::= cmdlist ecmd", + /* 340 */ "cmdlist ::= ecmd", + /* 341 */ "ecmd ::= SEMI", + /* 342 */ "ecmd ::= cmdx SEMI", + /* 343 */ "ecmd ::= explain cmdx SEMI", + /* 344 */ "trans_opt ::=", + /* 345 */ "trans_opt ::= TRANSACTION", + /* 346 */ "trans_opt ::= TRANSACTION nm", + /* 347 */ "savepoint_opt ::= SAVEPOINT", + /* 348 */ "savepoint_opt ::=", + /* 349 */ "cmd ::= create_table create_table_args", + /* 350 */ "table_option_set ::= table_option", + /* 351 */ "columnlist ::= columnlist COMMA columnname carglist", + /* 352 */ "columnlist ::= columnname carglist", + /* 353 */ "nm ::= ID|INDEXED|JOIN_KW", + /* 354 */ "nm ::= STRING", + /* 355 */ "typetoken ::= typename", + /* 356 */ "typename ::= ID|STRING", + /* 357 */ "signed ::= plus_num", + /* 358 */ "signed ::= minus_num", + /* 359 */ "carglist ::= carglist ccons", + /* 360 */ "carglist ::=", + /* 361 */ "ccons ::= NULL onconf", + /* 362 */ "ccons ::= GENERATED ALWAYS AS generated", + /* 363 */ "ccons ::= AS generated", + /* 364 */ "conslist_opt ::= COMMA conslist", + /* 365 */ "conslist ::= conslist tconscomma tcons", + /* 366 */ "conslist ::= tcons", + /* 367 */ "tconscomma ::=", + /* 368 */ "defer_subclause_opt ::= defer_subclause", + /* 369 */ "resolvetype ::= raisetype", + /* 370 */ "selectnowith ::= oneselect", + /* 371 */ "oneselect ::= values", + /* 372 */ "sclp ::= selcollist COMMA", + /* 373 */ "as ::= ID|STRING", + /* 374 */ "indexed_opt ::= indexed_by", + /* 375 */ "returning ::=", + /* 376 */ "expr ::= term", + /* 377 */ "likeop ::= LIKE_KW|MATCH", + /* 378 */ "case_operand ::= expr", + /* 379 */ "exprlist ::= nexprlist", + /* 380 */ "nmnum ::= plus_num", + /* 381 */ "nmnum ::= nm", + /* 382 */ "nmnum ::= ON", + /* 383 */ "nmnum ::= DELETE", + /* 384 */ "nmnum ::= DEFAULT", + /* 385 */ "plus_num ::= INTEGER|FLOAT", + /* 386 */ "foreach_clause ::=", + /* 387 */ "foreach_clause ::= FOR EACH ROW", + /* 388 */ "trnm ::= nm", + /* 389 */ "tridxby ::=", + /* 390 */ "database_kw_opt ::= DATABASE", + /* 391 */ "database_kw_opt ::=", + /* 392 */ "kwcolumn_opt ::=", + /* 393 */ "kwcolumn_opt ::= COLUMNKW", + /* 394 */ "vtabarglist ::= vtabarg", + /* 395 */ "vtabarglist ::= vtabarglist COMMA vtabarg", + /* 396 */ "vtabarg ::= vtabarg vtabargtoken", + /* 397 */ "anylist ::=", + /* 398 */ "anylist ::= anylist LP anylist RP", + /* 399 */ "anylist ::= anylist ANY", + /* 400 */ "with ::=", + /* 401 */ "windowdefn_list ::= windowdefn", + /* 402 */ "window ::= frame_opt", }; #endif /* NDEBUG */ @@ -143043,7 +171473,7 @@ static int yyGrowStack(yyParser *p){ #endif p->yystksz = newSize; } - return pNew==0; + return pNew==0; } #endif @@ -143085,7 +171515,7 @@ SQLITE_PRIVATE void sqlite3ParserInit(void *yypRawParser sqlite3ParserCTX_PDECL) } #ifndef sqlite3Parser_ENGINEALWAYSONSTACK -/* +/* ** This function allocates a new parser. ** The only argument is a pointer to a function which works like ** malloc. @@ -143112,7 +171542,7 @@ SQLITE_PRIVATE void *sqlite3ParserAlloc(void *(*mallocProc)(YYMALLOCARGTYPE) sql /* The following function deletes the "minor type" or semantic value ** associated with a symbol. The symbol can be either a terminal ** or nonterminal. "yymajor" is the symbol code, and "yypminor" is -** a pointer to the value to be deleted. The code used to do the +** a pointer to the value to be deleted. The code used to do the ** deletions is derived from the %destructor and/or %token_destructor ** directives of the input grammar. */ @@ -143127,7 +171557,7 @@ static void yy_destructor( /* Here is inserted the actions which take place when a ** terminal or non-terminal is destroyed. This can happen ** when the symbol is popped from the stack during a - ** reduce or during error processing or when a parser is + ** reduce or during error processing or when a parser is ** being destroyed before it is finished parsing. ** ** Note: during a reduce, the only symbols destroyed are those @@ -143135,73 +171565,97 @@ static void yy_destructor( ** inside the C code. */ /********* Begin destructor definitions ***************************************/ - case 164: /* select */ - case 196: /* selectnowith */ - case 197: /* oneselect */ - case 208: /* values */ + case 204: /* select */ + case 239: /* selectnowith */ + case 240: /* oneselect */ + case 252: /* values */ { -sqlite3SelectDelete(pParse->db, (yypminor->yy399)); +sqlite3SelectDelete(pParse->db, (yypminor->yy47)); } break; - case 174: /* term */ - case 175: /* expr */ - case 203: /* where_opt */ - case 205: /* having_opt */ - case 217: /* on_opt */ - case 230: /* case_operand */ - case 232: /* case_else */ - case 241: /* when_clause */ - case 246: /* key_opt */ + case 216: /* term */ + case 217: /* expr */ + case 246: /* where_opt */ + case 248: /* having_opt */ + case 267: /* where_opt_ret */ + case 278: /* case_operand */ + case 280: /* case_else */ + case 283: /* vinto */ + case 290: /* when_clause */ + case 295: /* key_opt */ + case 311: /* filter_clause */ { -sqlite3ExprDelete(pParse->db, (yypminor->yy182)); +sqlite3ExprDelete(pParse->db, (yypminor->yy528)); } break; - case 179: /* eidlist_opt */ - case 188: /* sortlist */ - case 189: /* eidlist */ - case 201: /* selcollist */ - case 204: /* groupby_opt */ - case 206: /* orderby_opt */ - case 209: /* nexprlist */ - case 210: /* exprlist */ - case 211: /* sclp */ - case 222: /* setlist */ - case 229: /* paren_exprlist */ - case 231: /* case_exprlist */ + case 221: /* eidlist_opt */ + case 231: /* sortlist */ + case 232: /* eidlist */ + case 244: /* selcollist */ + case 247: /* groupby_opt */ + case 249: /* orderby_opt */ + case 253: /* nexprlist */ + case 254: /* sclp */ + case 261: /* exprlist */ + case 268: /* setlist */ + case 277: /* paren_exprlist */ + case 279: /* case_exprlist */ + case 310: /* part_opt */ { -sqlite3ExprListDelete(pParse->db, (yypminor->yy232)); +sqlite3ExprListDelete(pParse->db, (yypminor->yy322)); } break; - case 195: /* fullname */ - case 202: /* from */ - case 213: /* seltablist */ - case 214: /* stl_prefix */ - case 219: /* xfullname */ + case 238: /* fullname */ + case 245: /* from */ + case 256: /* seltablist */ + case 257: /* stl_prefix */ + case 262: /* xfullname */ { -sqlite3SrcListDelete(pParse->db, (yypminor->yy427)); +sqlite3SrcListDelete(pParse->db, (yypminor->yy131)); } break; - case 198: /* wqlist */ + case 241: /* wqlist */ { -sqlite3WithDelete(pParse->db, (yypminor->yy91)); +sqlite3WithDelete(pParse->db, (yypminor->yy521)); } break; - case 218: /* using_opt */ - case 220: /* idlist */ - case 224: /* idlist_opt */ + case 251: /* window_clause */ + case 306: /* windowdefn_list */ { -sqlite3IdListDelete(pParse->db, (yypminor->yy510)); +sqlite3WindowListDelete(pParse->db, (yypminor->yy41)); } break; - case 237: /* trigger_cmd_list */ - case 242: /* trigger_cmd */ + case 263: /* idlist */ + case 270: /* idlist_opt */ { -sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy47)); +sqlite3IdListDelete(pParse->db, (yypminor->yy254)); } break; - case 239: /* trigger_event */ + case 273: /* filter_over */ + case 307: /* windowdefn */ + case 308: /* window */ + case 309: /* frame_opt */ + case 312: /* over_clause */ { -sqlite3IdListDelete(pParse->db, (yypminor->yy300).b); +sqlite3WindowDelete(pParse->db, (yypminor->yy41)); +} + break; + case 286: /* trigger_cmd_list */ + case 291: /* trigger_cmd */ +{ +sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy33)); +} + break; + case 288: /* trigger_event */ +{ +sqlite3IdListDelete(pParse->db, (yypminor->yy180).b); +} + break; + case 314: /* frame_bound */ + case 315: /* frame_bound_s */ + case 316: /* frame_bound_e */ +{ +sqlite3ExprDelete(pParse->db, (yypminor->yy595).pExpr); } break; /********* End destructor definitions *****************************************/ @@ -143242,7 +171696,7 @@ SQLITE_PRIVATE void sqlite3ParserFinalize(void *p){ } #ifndef sqlite3Parser_ENGINEALWAYSONSTACK -/* +/* ** Deallocate and destroy a parser. Destructors are called for ** all stack elements before shutting the parser down. ** @@ -143327,15 +171781,18 @@ static YYACTIONTYPE yy_find_shift_action( do{ i = yy_shift_ofst[stateno]; assert( i>=0 ); - assert( i+YYNTOKEN<=(int)sizeof(yy_lookahead)/sizeof(yy_lookahead[0]) ); + assert( i<=YY_ACTTAB_COUNT ); + assert( i+YYNTOKEN<=(int)YY_NLOOKAHEAD ); assert( iLookAhead!=YYNOCODE ); assert( iLookAhead < YYNTOKEN ); i += iLookAhead; + assert( i<(int)YY_NLOOKAHEAD ); if( yy_lookahead[i]!=iLookAhead ){ #ifdef YYFALLBACK YYCODETYPE iFallback; /* Fallback token */ - if( iLookAhead %s\n", @@ -143350,15 +171807,8 @@ static YYACTIONTYPE yy_find_shift_action( #ifdef YYWILDCARD { int j = i - iLookAhead + YYWILDCARD; - if( -#if YY_SHIFT_MIN+YYWILDCARD<0 - j>=0 && -#endif -#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT - j0 - ){ + assert( j<(int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])) ); + if( yy_lookahead[j]==YYWILDCARD && iLookAhead>0 ){ #ifndef NDEBUG if( yyTraceFILE ){ fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n", @@ -143372,6 +171822,7 @@ static YYACTIONTYPE yy_find_shift_action( #endif /* YYWILDCARD */ return yy_default[stateno]; }else{ + assert( i>=0 && i<(int)(sizeof(yy_action)/sizeof(yy_action[0])) ); return yy_action[i]; } }while(1); @@ -143381,7 +171832,7 @@ static YYACTIONTYPE yy_find_shift_action( ** Find the appropriate action for a parser given the non-terminal ** look-ahead token iLookAhead. */ -static int yy_find_reduce_action( +static YYACTIONTYPE yy_find_reduce_action( YYACTIONTYPE stateno, /* Current state number */ YYCODETYPE iLookAhead /* The look-ahead token */ ){ @@ -143467,7 +171918,7 @@ static void yy_shift( assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack) ); } #endif -#if YYSTACKDEPTH>0 +#if YYSTACKDEPTH>0 if( yypParser->yytos>yypParser->yystackEnd ){ yypParser->yytos--; yyStackOverflow(yypParser); @@ -143492,354 +171943,820 @@ static void yy_shift( yyTraceShift(yypParser, yyNewState, "Shift"); } -/* The following table contains information about every rule that -** is used during the reduce. -*/ -static const struct { - YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */ - signed char nrhs; /* Negative of the number of RHS symbols in the rule */ -} yyRuleInfo[] = { - { 149, -1 }, /* (0) explain ::= EXPLAIN */ - { 149, -3 }, /* (1) explain ::= EXPLAIN QUERY PLAN */ - { 148, -1 }, /* (2) cmdx ::= cmd */ - { 150, -3 }, /* (3) cmd ::= BEGIN transtype trans_opt */ - { 151, 0 }, /* (4) transtype ::= */ - { 151, -1 }, /* (5) transtype ::= DEFERRED */ - { 151, -1 }, /* (6) transtype ::= IMMEDIATE */ - { 151, -1 }, /* (7) transtype ::= EXCLUSIVE */ - { 150, -2 }, /* (8) cmd ::= COMMIT|END trans_opt */ - { 150, -2 }, /* (9) cmd ::= ROLLBACK trans_opt */ - { 150, -2 }, /* (10) cmd ::= SAVEPOINT nm */ - { 150, -3 }, /* (11) cmd ::= RELEASE savepoint_opt nm */ - { 150, -5 }, /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */ - { 155, -6 }, /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */ - { 157, -1 }, /* (14) createkw ::= CREATE */ - { 159, 0 }, /* (15) ifnotexists ::= */ - { 159, -3 }, /* (16) ifnotexists ::= IF NOT EXISTS */ - { 158, -1 }, /* (17) temp ::= TEMP */ - { 158, 0 }, /* (18) temp ::= */ - { 156, -5 }, /* (19) create_table_args ::= LP columnlist conslist_opt RP table_options */ - { 156, -2 }, /* (20) create_table_args ::= AS select */ - { 163, 0 }, /* (21) table_options ::= */ - { 163, -2 }, /* (22) table_options ::= WITHOUT nm */ - { 165, -2 }, /* (23) columnname ::= nm typetoken */ - { 167, 0 }, /* (24) typetoken ::= */ - { 167, -4 }, /* (25) typetoken ::= typename LP signed RP */ - { 167, -6 }, /* (26) typetoken ::= typename LP signed COMMA signed RP */ - { 168, -2 }, /* (27) typename ::= typename ID|STRING */ - { 172, 0 }, /* (28) scanpt ::= */ - { 173, -2 }, /* (29) ccons ::= CONSTRAINT nm */ - { 173, -4 }, /* (30) ccons ::= DEFAULT scanpt term scanpt */ - { 173, -4 }, /* (31) ccons ::= DEFAULT LP expr RP */ - { 173, -4 }, /* (32) ccons ::= DEFAULT PLUS term scanpt */ - { 173, -4 }, /* (33) ccons ::= DEFAULT MINUS term scanpt */ - { 173, -3 }, /* (34) ccons ::= DEFAULT scanpt ID|INDEXED */ - { 173, -3 }, /* (35) ccons ::= NOT NULL onconf */ - { 173, -5 }, /* (36) ccons ::= PRIMARY KEY sortorder onconf autoinc */ - { 173, -2 }, /* (37) ccons ::= UNIQUE onconf */ - { 173, -4 }, /* (38) ccons ::= CHECK LP expr RP */ - { 173, -4 }, /* (39) ccons ::= REFERENCES nm eidlist_opt refargs */ - { 173, -1 }, /* (40) ccons ::= defer_subclause */ - { 173, -2 }, /* (41) ccons ::= COLLATE ID|STRING */ - { 178, 0 }, /* (42) autoinc ::= */ - { 178, -1 }, /* (43) autoinc ::= AUTOINCR */ - { 180, 0 }, /* (44) refargs ::= */ - { 180, -2 }, /* (45) refargs ::= refargs refarg */ - { 182, -2 }, /* (46) refarg ::= MATCH nm */ - { 182, -3 }, /* (47) refarg ::= ON INSERT refact */ - { 182, -3 }, /* (48) refarg ::= ON DELETE refact */ - { 182, -3 }, /* (49) refarg ::= ON UPDATE refact */ - { 183, -2 }, /* (50) refact ::= SET NULL */ - { 183, -2 }, /* (51) refact ::= SET DEFAULT */ - { 183, -1 }, /* (52) refact ::= CASCADE */ - { 183, -1 }, /* (53) refact ::= RESTRICT */ - { 183, -2 }, /* (54) refact ::= NO ACTION */ - { 181, -3 }, /* (55) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ - { 181, -2 }, /* (56) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ - { 184, 0 }, /* (57) init_deferred_pred_opt ::= */ - { 184, -2 }, /* (58) init_deferred_pred_opt ::= INITIALLY DEFERRED */ - { 184, -2 }, /* (59) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ - { 162, 0 }, /* (60) conslist_opt ::= */ - { 186, -1 }, /* (61) tconscomma ::= COMMA */ - { 187, -2 }, /* (62) tcons ::= CONSTRAINT nm */ - { 187, -7 }, /* (63) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ - { 187, -5 }, /* (64) tcons ::= UNIQUE LP sortlist RP onconf */ - { 187, -5 }, /* (65) tcons ::= CHECK LP expr RP onconf */ - { 187, -10 }, /* (66) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ - { 190, 0 }, /* (67) defer_subclause_opt ::= */ - { 176, 0 }, /* (68) onconf ::= */ - { 176, -3 }, /* (69) onconf ::= ON CONFLICT resolvetype */ - { 191, 0 }, /* (70) orconf ::= */ - { 191, -2 }, /* (71) orconf ::= OR resolvetype */ - { 192, -1 }, /* (72) resolvetype ::= IGNORE */ - { 192, -1 }, /* (73) resolvetype ::= REPLACE */ - { 150, -4 }, /* (74) cmd ::= DROP TABLE ifexists fullname */ - { 194, -2 }, /* (75) ifexists ::= IF EXISTS */ - { 194, 0 }, /* (76) ifexists ::= */ - { 150, -9 }, /* (77) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ - { 150, -4 }, /* (78) cmd ::= DROP VIEW ifexists fullname */ - { 150, -1 }, /* (79) cmd ::= select */ - { 164, -3 }, /* (80) select ::= WITH wqlist selectnowith */ - { 164, -4 }, /* (81) select ::= WITH RECURSIVE wqlist selectnowith */ - { 164, -1 }, /* (82) select ::= selectnowith */ - { 196, -3 }, /* (83) selectnowith ::= selectnowith multiselect_op oneselect */ - { 199, -1 }, /* (84) multiselect_op ::= UNION */ - { 199, -2 }, /* (85) multiselect_op ::= UNION ALL */ - { 199, -1 }, /* (86) multiselect_op ::= EXCEPT|INTERSECT */ - { 197, -9 }, /* (87) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ - { 208, -4 }, /* (88) values ::= VALUES LP nexprlist RP */ - { 208, -5 }, /* (89) values ::= values COMMA LP exprlist RP */ - { 200, -1 }, /* (90) distinct ::= DISTINCT */ - { 200, -1 }, /* (91) distinct ::= ALL */ - { 200, 0 }, /* (92) distinct ::= */ - { 211, 0 }, /* (93) sclp ::= */ - { 201, -5 }, /* (94) selcollist ::= sclp scanpt expr scanpt as */ - { 201, -3 }, /* (95) selcollist ::= sclp scanpt STAR */ - { 201, -5 }, /* (96) selcollist ::= sclp scanpt nm DOT STAR */ - { 212, -2 }, /* (97) as ::= AS nm */ - { 212, 0 }, /* (98) as ::= */ - { 202, 0 }, /* (99) from ::= */ - { 202, -2 }, /* (100) from ::= FROM seltablist */ - { 214, -2 }, /* (101) stl_prefix ::= seltablist joinop */ - { 214, 0 }, /* (102) stl_prefix ::= */ - { 213, -7 }, /* (103) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */ - { 213, -9 }, /* (104) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */ - { 213, -7 }, /* (105) seltablist ::= stl_prefix LP select RP as on_opt using_opt */ - { 213, -7 }, /* (106) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ - { 160, 0 }, /* (107) dbnm ::= */ - { 160, -2 }, /* (108) dbnm ::= DOT nm */ - { 195, -1 }, /* (109) fullname ::= nm */ - { 195, -3 }, /* (110) fullname ::= nm DOT nm */ - { 219, -1 }, /* (111) xfullname ::= nm */ - { 219, -3 }, /* (112) xfullname ::= nm DOT nm */ - { 219, -5 }, /* (113) xfullname ::= nm DOT nm AS nm */ - { 219, -3 }, /* (114) xfullname ::= nm AS nm */ - { 215, -1 }, /* (115) joinop ::= COMMA|JOIN */ - { 215, -2 }, /* (116) joinop ::= JOIN_KW JOIN */ - { 215, -3 }, /* (117) joinop ::= JOIN_KW nm JOIN */ - { 215, -4 }, /* (118) joinop ::= JOIN_KW nm nm JOIN */ - { 217, -2 }, /* (119) on_opt ::= ON expr */ - { 217, 0 }, /* (120) on_opt ::= */ - { 216, 0 }, /* (121) indexed_opt ::= */ - { 216, -3 }, /* (122) indexed_opt ::= INDEXED BY nm */ - { 216, -2 }, /* (123) indexed_opt ::= NOT INDEXED */ - { 218, -4 }, /* (124) using_opt ::= USING LP idlist RP */ - { 218, 0 }, /* (125) using_opt ::= */ - { 206, 0 }, /* (126) orderby_opt ::= */ - { 206, -3 }, /* (127) orderby_opt ::= ORDER BY sortlist */ - { 188, -4 }, /* (128) sortlist ::= sortlist COMMA expr sortorder */ - { 188, -2 }, /* (129) sortlist ::= expr sortorder */ - { 177, -1 }, /* (130) sortorder ::= ASC */ - { 177, -1 }, /* (131) sortorder ::= DESC */ - { 177, 0 }, /* (132) sortorder ::= */ - { 204, 0 }, /* (133) groupby_opt ::= */ - { 204, -3 }, /* (134) groupby_opt ::= GROUP BY nexprlist */ - { 205, 0 }, /* (135) having_opt ::= */ - { 205, -2 }, /* (136) having_opt ::= HAVING expr */ - { 207, 0 }, /* (137) limit_opt ::= */ - { 207, -2 }, /* (138) limit_opt ::= LIMIT expr */ - { 207, -4 }, /* (139) limit_opt ::= LIMIT expr OFFSET expr */ - { 207, -4 }, /* (140) limit_opt ::= LIMIT expr COMMA expr */ - { 150, -6 }, /* (141) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */ - { 203, 0 }, /* (142) where_opt ::= */ - { 203, -2 }, /* (143) where_opt ::= WHERE expr */ - { 150, -8 }, /* (144) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */ - { 222, -5 }, /* (145) setlist ::= setlist COMMA nm EQ expr */ - { 222, -7 }, /* (146) setlist ::= setlist COMMA LP idlist RP EQ expr */ - { 222, -3 }, /* (147) setlist ::= nm EQ expr */ - { 222, -5 }, /* (148) setlist ::= LP idlist RP EQ expr */ - { 150, -7 }, /* (149) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */ - { 150, -7 }, /* (150) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */ - { 225, 0 }, /* (151) upsert ::= */ - { 225, -11 }, /* (152) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */ - { 225, -8 }, /* (153) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */ - { 225, -4 }, /* (154) upsert ::= ON CONFLICT DO NOTHING */ - { 223, -2 }, /* (155) insert_cmd ::= INSERT orconf */ - { 223, -1 }, /* (156) insert_cmd ::= REPLACE */ - { 224, 0 }, /* (157) idlist_opt ::= */ - { 224, -3 }, /* (158) idlist_opt ::= LP idlist RP */ - { 220, -3 }, /* (159) idlist ::= idlist COMMA nm */ - { 220, -1 }, /* (160) idlist ::= nm */ - { 175, -3 }, /* (161) expr ::= LP expr RP */ - { 175, -1 }, /* (162) expr ::= ID|INDEXED */ - { 175, -1 }, /* (163) expr ::= JOIN_KW */ - { 175, -3 }, /* (164) expr ::= nm DOT nm */ - { 175, -5 }, /* (165) expr ::= nm DOT nm DOT nm */ - { 174, -1 }, /* (166) term ::= NULL|FLOAT|BLOB */ - { 174, -1 }, /* (167) term ::= STRING */ - { 174, -1 }, /* (168) term ::= INTEGER */ - { 175, -1 }, /* (169) expr ::= VARIABLE */ - { 175, -3 }, /* (170) expr ::= expr COLLATE ID|STRING */ - { 175, -6 }, /* (171) expr ::= CAST LP expr AS typetoken RP */ - { 175, -5 }, /* (172) expr ::= ID|INDEXED LP distinct exprlist RP */ - { 175, -4 }, /* (173) expr ::= ID|INDEXED LP STAR RP */ - { 174, -1 }, /* (174) term ::= CTIME_KW */ - { 175, -5 }, /* (175) expr ::= LP nexprlist COMMA expr RP */ - { 175, -3 }, /* (176) expr ::= expr AND expr */ - { 175, -3 }, /* (177) expr ::= expr OR expr */ - { 175, -3 }, /* (178) expr ::= expr LT|GT|GE|LE expr */ - { 175, -3 }, /* (179) expr ::= expr EQ|NE expr */ - { 175, -3 }, /* (180) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ - { 175, -3 }, /* (181) expr ::= expr PLUS|MINUS expr */ - { 175, -3 }, /* (182) expr ::= expr STAR|SLASH|REM expr */ - { 175, -3 }, /* (183) expr ::= expr CONCAT expr */ - { 226, -2 }, /* (184) likeop ::= NOT LIKE_KW|MATCH */ - { 175, -3 }, /* (185) expr ::= expr likeop expr */ - { 175, -5 }, /* (186) expr ::= expr likeop expr ESCAPE expr */ - { 175, -2 }, /* (187) expr ::= expr ISNULL|NOTNULL */ - { 175, -3 }, /* (188) expr ::= expr NOT NULL */ - { 175, -3 }, /* (189) expr ::= expr IS expr */ - { 175, -4 }, /* (190) expr ::= expr IS NOT expr */ - { 175, -2 }, /* (191) expr ::= NOT expr */ - { 175, -2 }, /* (192) expr ::= BITNOT expr */ - { 175, -2 }, /* (193) expr ::= MINUS expr */ - { 175, -2 }, /* (194) expr ::= PLUS expr */ - { 227, -1 }, /* (195) between_op ::= BETWEEN */ - { 227, -2 }, /* (196) between_op ::= NOT BETWEEN */ - { 175, -5 }, /* (197) expr ::= expr between_op expr AND expr */ - { 228, -1 }, /* (198) in_op ::= IN */ - { 228, -2 }, /* (199) in_op ::= NOT IN */ - { 175, -5 }, /* (200) expr ::= expr in_op LP exprlist RP */ - { 175, -3 }, /* (201) expr ::= LP select RP */ - { 175, -5 }, /* (202) expr ::= expr in_op LP select RP */ - { 175, -5 }, /* (203) expr ::= expr in_op nm dbnm paren_exprlist */ - { 175, -4 }, /* (204) expr ::= EXISTS LP select RP */ - { 175, -5 }, /* (205) expr ::= CASE case_operand case_exprlist case_else END */ - { 231, -5 }, /* (206) case_exprlist ::= case_exprlist WHEN expr THEN expr */ - { 231, -4 }, /* (207) case_exprlist ::= WHEN expr THEN expr */ - { 232, -2 }, /* (208) case_else ::= ELSE expr */ - { 232, 0 }, /* (209) case_else ::= */ - { 230, -1 }, /* (210) case_operand ::= expr */ - { 230, 0 }, /* (211) case_operand ::= */ - { 210, 0 }, /* (212) exprlist ::= */ - { 209, -3 }, /* (213) nexprlist ::= nexprlist COMMA expr */ - { 209, -1 }, /* (214) nexprlist ::= expr */ - { 229, 0 }, /* (215) paren_exprlist ::= */ - { 229, -3 }, /* (216) paren_exprlist ::= LP exprlist RP */ - { 150, -12 }, /* (217) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ - { 233, -1 }, /* (218) uniqueflag ::= UNIQUE */ - { 233, 0 }, /* (219) uniqueflag ::= */ - { 179, 0 }, /* (220) eidlist_opt ::= */ - { 179, -3 }, /* (221) eidlist_opt ::= LP eidlist RP */ - { 189, -5 }, /* (222) eidlist ::= eidlist COMMA nm collate sortorder */ - { 189, -3 }, /* (223) eidlist ::= nm collate sortorder */ - { 234, 0 }, /* (224) collate ::= */ - { 234, -2 }, /* (225) collate ::= COLLATE ID|STRING */ - { 150, -4 }, /* (226) cmd ::= DROP INDEX ifexists fullname */ - { 150, -1 }, /* (227) cmd ::= VACUUM */ - { 150, -2 }, /* (228) cmd ::= VACUUM nm */ - { 150, -3 }, /* (229) cmd ::= PRAGMA nm dbnm */ - { 150, -5 }, /* (230) cmd ::= PRAGMA nm dbnm EQ nmnum */ - { 150, -6 }, /* (231) cmd ::= PRAGMA nm dbnm LP nmnum RP */ - { 150, -5 }, /* (232) cmd ::= PRAGMA nm dbnm EQ minus_num */ - { 150, -6 }, /* (233) cmd ::= PRAGMA nm dbnm LP minus_num RP */ - { 170, -2 }, /* (234) plus_num ::= PLUS INTEGER|FLOAT */ - { 171, -2 }, /* (235) minus_num ::= MINUS INTEGER|FLOAT */ - { 150, -5 }, /* (236) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ - { 236, -11 }, /* (237) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ - { 238, -1 }, /* (238) trigger_time ::= BEFORE|AFTER */ - { 238, -2 }, /* (239) trigger_time ::= INSTEAD OF */ - { 238, 0 }, /* (240) trigger_time ::= */ - { 239, -1 }, /* (241) trigger_event ::= DELETE|INSERT */ - { 239, -1 }, /* (242) trigger_event ::= UPDATE */ - { 239, -3 }, /* (243) trigger_event ::= UPDATE OF idlist */ - { 241, 0 }, /* (244) when_clause ::= */ - { 241, -2 }, /* (245) when_clause ::= WHEN expr */ - { 237, -3 }, /* (246) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ - { 237, -2 }, /* (247) trigger_cmd_list ::= trigger_cmd SEMI */ - { 243, -3 }, /* (248) trnm ::= nm DOT nm */ - { 244, -3 }, /* (249) tridxby ::= INDEXED BY nm */ - { 244, -2 }, /* (250) tridxby ::= NOT INDEXED */ - { 242, -8 }, /* (251) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */ - { 242, -8 }, /* (252) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */ - { 242, -6 }, /* (253) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */ - { 242, -3 }, /* (254) trigger_cmd ::= scanpt select scanpt */ - { 175, -4 }, /* (255) expr ::= RAISE LP IGNORE RP */ - { 175, -6 }, /* (256) expr ::= RAISE LP raisetype COMMA nm RP */ - { 193, -1 }, /* (257) raisetype ::= ROLLBACK */ - { 193, -1 }, /* (258) raisetype ::= ABORT */ - { 193, -1 }, /* (259) raisetype ::= FAIL */ - { 150, -4 }, /* (260) cmd ::= DROP TRIGGER ifexists fullname */ - { 150, -6 }, /* (261) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ - { 150, -3 }, /* (262) cmd ::= DETACH database_kw_opt expr */ - { 246, 0 }, /* (263) key_opt ::= */ - { 246, -2 }, /* (264) key_opt ::= KEY expr */ - { 150, -1 }, /* (265) cmd ::= REINDEX */ - { 150, -3 }, /* (266) cmd ::= REINDEX nm dbnm */ - { 150, -1 }, /* (267) cmd ::= ANALYZE */ - { 150, -3 }, /* (268) cmd ::= ANALYZE nm dbnm */ - { 150, -6 }, /* (269) cmd ::= ALTER TABLE fullname RENAME TO nm */ - { 150, -7 }, /* (270) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ - { 247, -1 }, /* (271) add_column_fullname ::= fullname */ - { 150, -1 }, /* (272) cmd ::= create_vtab */ - { 150, -4 }, /* (273) cmd ::= create_vtab LP vtabarglist RP */ - { 249, -8 }, /* (274) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ - { 251, 0 }, /* (275) vtabarg ::= */ - { 252, -1 }, /* (276) vtabargtoken ::= ANY */ - { 252, -3 }, /* (277) vtabargtoken ::= lp anylist RP */ - { 253, -1 }, /* (278) lp ::= LP */ - { 221, -2 }, /* (279) with ::= WITH wqlist */ - { 221, -3 }, /* (280) with ::= WITH RECURSIVE wqlist */ - { 198, -6 }, /* (281) wqlist ::= nm eidlist_opt AS LP select RP */ - { 198, -8 }, /* (282) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */ - { 145, -1 }, /* (283) input ::= cmdlist */ - { 146, -2 }, /* (284) cmdlist ::= cmdlist ecmd */ - { 146, -1 }, /* (285) cmdlist ::= ecmd */ - { 147, -1 }, /* (286) ecmd ::= SEMI */ - { 147, -2 }, /* (287) ecmd ::= cmdx SEMI */ - { 147, -2 }, /* (288) ecmd ::= explain cmdx */ - { 152, 0 }, /* (289) trans_opt ::= */ - { 152, -1 }, /* (290) trans_opt ::= TRANSACTION */ - { 152, -2 }, /* (291) trans_opt ::= TRANSACTION nm */ - { 154, -1 }, /* (292) savepoint_opt ::= SAVEPOINT */ - { 154, 0 }, /* (293) savepoint_opt ::= */ - { 150, -2 }, /* (294) cmd ::= create_table create_table_args */ - { 161, -4 }, /* (295) columnlist ::= columnlist COMMA columnname carglist */ - { 161, -2 }, /* (296) columnlist ::= columnname carglist */ - { 153, -1 }, /* (297) nm ::= ID|INDEXED */ - { 153, -1 }, /* (298) nm ::= STRING */ - { 153, -1 }, /* (299) nm ::= JOIN_KW */ - { 167, -1 }, /* (300) typetoken ::= typename */ - { 168, -1 }, /* (301) typename ::= ID|STRING */ - { 169, -1 }, /* (302) signed ::= plus_num */ - { 169, -1 }, /* (303) signed ::= minus_num */ - { 166, -2 }, /* (304) carglist ::= carglist ccons */ - { 166, 0 }, /* (305) carglist ::= */ - { 173, -2 }, /* (306) ccons ::= NULL onconf */ - { 162, -2 }, /* (307) conslist_opt ::= COMMA conslist */ - { 185, -3 }, /* (308) conslist ::= conslist tconscomma tcons */ - { 185, -1 }, /* (309) conslist ::= tcons */ - { 186, 0 }, /* (310) tconscomma ::= */ - { 190, -1 }, /* (311) defer_subclause_opt ::= defer_subclause */ - { 192, -1 }, /* (312) resolvetype ::= raisetype */ - { 196, -1 }, /* (313) selectnowith ::= oneselect */ - { 197, -1 }, /* (314) oneselect ::= values */ - { 211, -2 }, /* (315) sclp ::= selcollist COMMA */ - { 212, -1 }, /* (316) as ::= ID|STRING */ - { 175, -1 }, /* (317) expr ::= term */ - { 226, -1 }, /* (318) likeop ::= LIKE_KW|MATCH */ - { 210, -1 }, /* (319) exprlist ::= nexprlist */ - { 235, -1 }, /* (320) nmnum ::= plus_num */ - { 235, -1 }, /* (321) nmnum ::= nm */ - { 235, -1 }, /* (322) nmnum ::= ON */ - { 235, -1 }, /* (323) nmnum ::= DELETE */ - { 235, -1 }, /* (324) nmnum ::= DEFAULT */ - { 170, -1 }, /* (325) plus_num ::= INTEGER|FLOAT */ - { 240, 0 }, /* (326) foreach_clause ::= */ - { 240, -3 }, /* (327) foreach_clause ::= FOR EACH ROW */ - { 243, -1 }, /* (328) trnm ::= nm */ - { 244, 0 }, /* (329) tridxby ::= */ - { 245, -1 }, /* (330) database_kw_opt ::= DATABASE */ - { 245, 0 }, /* (331) database_kw_opt ::= */ - { 248, 0 }, /* (332) kwcolumn_opt ::= */ - { 248, -1 }, /* (333) kwcolumn_opt ::= COLUMNKW */ - { 250, -1 }, /* (334) vtabarglist ::= vtabarg */ - { 250, -3 }, /* (335) vtabarglist ::= vtabarglist COMMA vtabarg */ - { 251, -2 }, /* (336) vtabarg ::= vtabarg vtabargtoken */ - { 254, 0 }, /* (337) anylist ::= */ - { 254, -4 }, /* (338) anylist ::= anylist LP anylist RP */ - { 254, -2 }, /* (339) anylist ::= anylist ANY */ - { 221, 0 }, /* (340) with ::= */ +/* For rule J, yyRuleInfoLhs[J] contains the symbol on the left-hand side +** of that rule */ +static const YYCODETYPE yyRuleInfoLhs[] = { + 189, /* (0) explain ::= EXPLAIN */ + 189, /* (1) explain ::= EXPLAIN QUERY PLAN */ + 188, /* (2) cmdx ::= cmd */ + 190, /* (3) cmd ::= BEGIN transtype trans_opt */ + 191, /* (4) transtype ::= */ + 191, /* (5) transtype ::= DEFERRED */ + 191, /* (6) transtype ::= IMMEDIATE */ + 191, /* (7) transtype ::= EXCLUSIVE */ + 190, /* (8) cmd ::= COMMIT|END trans_opt */ + 190, /* (9) cmd ::= ROLLBACK trans_opt */ + 190, /* (10) cmd ::= SAVEPOINT nm */ + 190, /* (11) cmd ::= RELEASE savepoint_opt nm */ + 190, /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */ + 195, /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */ + 197, /* (14) createkw ::= CREATE */ + 199, /* (15) ifnotexists ::= */ + 199, /* (16) ifnotexists ::= IF NOT EXISTS */ + 198, /* (17) temp ::= TEMP */ + 198, /* (18) temp ::= */ + 196, /* (19) create_table_args ::= LP columnlist conslist_opt RP table_option_set */ + 196, /* (20) create_table_args ::= AS select */ + 203, /* (21) table_option_set ::= */ + 203, /* (22) table_option_set ::= table_option_set COMMA table_option */ + 205, /* (23) table_option ::= WITHOUT nm */ + 205, /* (24) table_option ::= nm */ + 206, /* (25) columnname ::= nm typetoken */ + 208, /* (26) typetoken ::= */ + 208, /* (27) typetoken ::= typename LP signed RP */ + 208, /* (28) typetoken ::= typename LP signed COMMA signed RP */ + 209, /* (29) typename ::= typename ID|STRING */ + 213, /* (30) scanpt ::= */ + 214, /* (31) scantok ::= */ + 215, /* (32) ccons ::= CONSTRAINT nm */ + 215, /* (33) ccons ::= DEFAULT scantok term */ + 215, /* (34) ccons ::= DEFAULT LP expr RP */ + 215, /* (35) ccons ::= DEFAULT PLUS scantok term */ + 215, /* (36) ccons ::= DEFAULT MINUS scantok term */ + 215, /* (37) ccons ::= DEFAULT scantok ID|INDEXED */ + 215, /* (38) ccons ::= NOT NULL onconf */ + 215, /* (39) ccons ::= PRIMARY KEY sortorder onconf autoinc */ + 215, /* (40) ccons ::= UNIQUE onconf */ + 215, /* (41) ccons ::= CHECK LP expr RP */ + 215, /* (42) ccons ::= REFERENCES nm eidlist_opt refargs */ + 215, /* (43) ccons ::= defer_subclause */ + 215, /* (44) ccons ::= COLLATE ID|STRING */ + 224, /* (45) generated ::= LP expr RP */ + 224, /* (46) generated ::= LP expr RP ID */ + 220, /* (47) autoinc ::= */ + 220, /* (48) autoinc ::= AUTOINCR */ + 222, /* (49) refargs ::= */ + 222, /* (50) refargs ::= refargs refarg */ + 225, /* (51) refarg ::= MATCH nm */ + 225, /* (52) refarg ::= ON INSERT refact */ + 225, /* (53) refarg ::= ON DELETE refact */ + 225, /* (54) refarg ::= ON UPDATE refact */ + 226, /* (55) refact ::= SET NULL */ + 226, /* (56) refact ::= SET DEFAULT */ + 226, /* (57) refact ::= CASCADE */ + 226, /* (58) refact ::= RESTRICT */ + 226, /* (59) refact ::= NO ACTION */ + 223, /* (60) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ + 223, /* (61) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ + 227, /* (62) init_deferred_pred_opt ::= */ + 227, /* (63) init_deferred_pred_opt ::= INITIALLY DEFERRED */ + 227, /* (64) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ + 202, /* (65) conslist_opt ::= */ + 229, /* (66) tconscomma ::= COMMA */ + 230, /* (67) tcons ::= CONSTRAINT nm */ + 230, /* (68) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ + 230, /* (69) tcons ::= UNIQUE LP sortlist RP onconf */ + 230, /* (70) tcons ::= CHECK LP expr RP onconf */ + 230, /* (71) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ + 233, /* (72) defer_subclause_opt ::= */ + 218, /* (73) onconf ::= */ + 218, /* (74) onconf ::= ON CONFLICT resolvetype */ + 234, /* (75) orconf ::= */ + 234, /* (76) orconf ::= OR resolvetype */ + 235, /* (77) resolvetype ::= IGNORE */ + 235, /* (78) resolvetype ::= REPLACE */ + 190, /* (79) cmd ::= DROP TABLE ifexists fullname */ + 237, /* (80) ifexists ::= IF EXISTS */ + 237, /* (81) ifexists ::= */ + 190, /* (82) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ + 190, /* (83) cmd ::= DROP VIEW ifexists fullname */ + 190, /* (84) cmd ::= select */ + 204, /* (85) select ::= WITH wqlist selectnowith */ + 204, /* (86) select ::= WITH RECURSIVE wqlist selectnowith */ + 204, /* (87) select ::= selectnowith */ + 239, /* (88) selectnowith ::= selectnowith multiselect_op oneselect */ + 242, /* (89) multiselect_op ::= UNION */ + 242, /* (90) multiselect_op ::= UNION ALL */ + 242, /* (91) multiselect_op ::= EXCEPT|INTERSECT */ + 240, /* (92) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ + 240, /* (93) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */ + 252, /* (94) values ::= VALUES LP nexprlist RP */ + 252, /* (95) values ::= values COMMA LP nexprlist RP */ + 243, /* (96) distinct ::= DISTINCT */ + 243, /* (97) distinct ::= ALL */ + 243, /* (98) distinct ::= */ + 254, /* (99) sclp ::= */ + 244, /* (100) selcollist ::= sclp scanpt expr scanpt as */ + 244, /* (101) selcollist ::= sclp scanpt STAR */ + 244, /* (102) selcollist ::= sclp scanpt nm DOT STAR */ + 255, /* (103) as ::= AS nm */ + 255, /* (104) as ::= */ + 245, /* (105) from ::= */ + 245, /* (106) from ::= FROM seltablist */ + 257, /* (107) stl_prefix ::= seltablist joinop */ + 257, /* (108) stl_prefix ::= */ + 256, /* (109) seltablist ::= stl_prefix nm dbnm as on_using */ + 256, /* (110) seltablist ::= stl_prefix nm dbnm as indexed_by on_using */ + 256, /* (111) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_using */ + 256, /* (112) seltablist ::= stl_prefix LP select RP as on_using */ + 256, /* (113) seltablist ::= stl_prefix LP seltablist RP as on_using */ + 200, /* (114) dbnm ::= */ + 200, /* (115) dbnm ::= DOT nm */ + 238, /* (116) fullname ::= nm */ + 238, /* (117) fullname ::= nm DOT nm */ + 262, /* (118) xfullname ::= nm */ + 262, /* (119) xfullname ::= nm DOT nm */ + 262, /* (120) xfullname ::= nm DOT nm AS nm */ + 262, /* (121) xfullname ::= nm AS nm */ + 258, /* (122) joinop ::= COMMA|JOIN */ + 258, /* (123) joinop ::= JOIN_KW JOIN */ + 258, /* (124) joinop ::= JOIN_KW nm JOIN */ + 258, /* (125) joinop ::= JOIN_KW nm nm JOIN */ + 259, /* (126) on_using ::= ON expr */ + 259, /* (127) on_using ::= USING LP idlist RP */ + 259, /* (128) on_using ::= */ + 264, /* (129) indexed_opt ::= */ + 260, /* (130) indexed_by ::= INDEXED BY nm */ + 260, /* (131) indexed_by ::= NOT INDEXED */ + 249, /* (132) orderby_opt ::= */ + 249, /* (133) orderby_opt ::= ORDER BY sortlist */ + 231, /* (134) sortlist ::= sortlist COMMA expr sortorder nulls */ + 231, /* (135) sortlist ::= expr sortorder nulls */ + 219, /* (136) sortorder ::= ASC */ + 219, /* (137) sortorder ::= DESC */ + 219, /* (138) sortorder ::= */ + 265, /* (139) nulls ::= NULLS FIRST */ + 265, /* (140) nulls ::= NULLS LAST */ + 265, /* (141) nulls ::= */ + 247, /* (142) groupby_opt ::= */ + 247, /* (143) groupby_opt ::= GROUP BY nexprlist */ + 248, /* (144) having_opt ::= */ + 248, /* (145) having_opt ::= HAVING expr */ + 250, /* (146) limit_opt ::= */ + 250, /* (147) limit_opt ::= LIMIT expr */ + 250, /* (148) limit_opt ::= LIMIT expr OFFSET expr */ + 250, /* (149) limit_opt ::= LIMIT expr COMMA expr */ + 190, /* (150) cmd ::= with DELETE FROM xfullname indexed_opt where_opt_ret */ + 246, /* (151) where_opt ::= */ + 246, /* (152) where_opt ::= WHERE expr */ + 267, /* (153) where_opt_ret ::= */ + 267, /* (154) where_opt_ret ::= WHERE expr */ + 267, /* (155) where_opt_ret ::= RETURNING selcollist */ + 267, /* (156) where_opt_ret ::= WHERE expr RETURNING selcollist */ + 190, /* (157) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt_ret */ + 268, /* (158) setlist ::= setlist COMMA nm EQ expr */ + 268, /* (159) setlist ::= setlist COMMA LP idlist RP EQ expr */ + 268, /* (160) setlist ::= nm EQ expr */ + 268, /* (161) setlist ::= LP idlist RP EQ expr */ + 190, /* (162) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */ + 190, /* (163) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES returning */ + 271, /* (164) upsert ::= */ + 271, /* (165) upsert ::= RETURNING selcollist */ + 271, /* (166) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt upsert */ + 271, /* (167) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING upsert */ + 271, /* (168) upsert ::= ON CONFLICT DO NOTHING returning */ + 271, /* (169) upsert ::= ON CONFLICT DO UPDATE SET setlist where_opt returning */ + 272, /* (170) returning ::= RETURNING selcollist */ + 269, /* (171) insert_cmd ::= INSERT orconf */ + 269, /* (172) insert_cmd ::= REPLACE */ + 270, /* (173) idlist_opt ::= */ + 270, /* (174) idlist_opt ::= LP idlist RP */ + 263, /* (175) idlist ::= idlist COMMA nm */ + 263, /* (176) idlist ::= nm */ + 217, /* (177) expr ::= LP expr RP */ + 217, /* (178) expr ::= ID|INDEXED|JOIN_KW */ + 217, /* (179) expr ::= nm DOT nm */ + 217, /* (180) expr ::= nm DOT nm DOT nm */ + 216, /* (181) term ::= NULL|FLOAT|BLOB */ + 216, /* (182) term ::= STRING */ + 216, /* (183) term ::= INTEGER */ + 217, /* (184) expr ::= VARIABLE */ + 217, /* (185) expr ::= expr COLLATE ID|STRING */ + 217, /* (186) expr ::= CAST LP expr AS typetoken RP */ + 217, /* (187) expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP */ + 217, /* (188) expr ::= ID|INDEXED|JOIN_KW LP STAR RP */ + 217, /* (189) expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP filter_over */ + 217, /* (190) expr ::= ID|INDEXED|JOIN_KW LP STAR RP filter_over */ + 216, /* (191) term ::= CTIME_KW */ + 217, /* (192) expr ::= LP nexprlist COMMA expr RP */ + 217, /* (193) expr ::= expr AND expr */ + 217, /* (194) expr ::= expr OR expr */ + 217, /* (195) expr ::= expr LT|GT|GE|LE expr */ + 217, /* (196) expr ::= expr EQ|NE expr */ + 217, /* (197) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ + 217, /* (198) expr ::= expr PLUS|MINUS expr */ + 217, /* (199) expr ::= expr STAR|SLASH|REM expr */ + 217, /* (200) expr ::= expr CONCAT expr */ + 274, /* (201) likeop ::= NOT LIKE_KW|MATCH */ + 217, /* (202) expr ::= expr likeop expr */ + 217, /* (203) expr ::= expr likeop expr ESCAPE expr */ + 217, /* (204) expr ::= expr ISNULL|NOTNULL */ + 217, /* (205) expr ::= expr NOT NULL */ + 217, /* (206) expr ::= expr IS expr */ + 217, /* (207) expr ::= expr IS NOT expr */ + 217, /* (208) expr ::= expr IS NOT DISTINCT FROM expr */ + 217, /* (209) expr ::= expr IS DISTINCT FROM expr */ + 217, /* (210) expr ::= NOT expr */ + 217, /* (211) expr ::= BITNOT expr */ + 217, /* (212) expr ::= PLUS|MINUS expr */ + 217, /* (213) expr ::= expr PTR expr */ + 275, /* (214) between_op ::= BETWEEN */ + 275, /* (215) between_op ::= NOT BETWEEN */ + 217, /* (216) expr ::= expr between_op expr AND expr */ + 276, /* (217) in_op ::= IN */ + 276, /* (218) in_op ::= NOT IN */ + 217, /* (219) expr ::= expr in_op LP exprlist RP */ + 217, /* (220) expr ::= LP select RP */ + 217, /* (221) expr ::= expr in_op LP select RP */ + 217, /* (222) expr ::= expr in_op nm dbnm paren_exprlist */ + 217, /* (223) expr ::= EXISTS LP select RP */ + 217, /* (224) expr ::= CASE case_operand case_exprlist case_else END */ + 279, /* (225) case_exprlist ::= case_exprlist WHEN expr THEN expr */ + 279, /* (226) case_exprlist ::= WHEN expr THEN expr */ + 280, /* (227) case_else ::= ELSE expr */ + 280, /* (228) case_else ::= */ + 278, /* (229) case_operand ::= */ + 261, /* (230) exprlist ::= */ + 253, /* (231) nexprlist ::= nexprlist COMMA expr */ + 253, /* (232) nexprlist ::= expr */ + 277, /* (233) paren_exprlist ::= */ + 277, /* (234) paren_exprlist ::= LP exprlist RP */ + 190, /* (235) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ + 281, /* (236) uniqueflag ::= UNIQUE */ + 281, /* (237) uniqueflag ::= */ + 221, /* (238) eidlist_opt ::= */ + 221, /* (239) eidlist_opt ::= LP eidlist RP */ + 232, /* (240) eidlist ::= eidlist COMMA nm collate sortorder */ + 232, /* (241) eidlist ::= nm collate sortorder */ + 282, /* (242) collate ::= */ + 282, /* (243) collate ::= COLLATE ID|STRING */ + 190, /* (244) cmd ::= DROP INDEX ifexists fullname */ + 190, /* (245) cmd ::= VACUUM vinto */ + 190, /* (246) cmd ::= VACUUM nm vinto */ + 283, /* (247) vinto ::= INTO expr */ + 283, /* (248) vinto ::= */ + 190, /* (249) cmd ::= PRAGMA nm dbnm */ + 190, /* (250) cmd ::= PRAGMA nm dbnm EQ nmnum */ + 190, /* (251) cmd ::= PRAGMA nm dbnm LP nmnum RP */ + 190, /* (252) cmd ::= PRAGMA nm dbnm EQ minus_num */ + 190, /* (253) cmd ::= PRAGMA nm dbnm LP minus_num RP */ + 211, /* (254) plus_num ::= PLUS INTEGER|FLOAT */ + 212, /* (255) minus_num ::= MINUS INTEGER|FLOAT */ + 190, /* (256) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ + 285, /* (257) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ + 287, /* (258) trigger_time ::= BEFORE|AFTER */ + 287, /* (259) trigger_time ::= INSTEAD OF */ + 287, /* (260) trigger_time ::= */ + 288, /* (261) trigger_event ::= DELETE|INSERT */ + 288, /* (262) trigger_event ::= UPDATE */ + 288, /* (263) trigger_event ::= UPDATE OF idlist */ + 290, /* (264) when_clause ::= */ + 290, /* (265) when_clause ::= WHEN expr */ + 286, /* (266) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ + 286, /* (267) trigger_cmd_list ::= trigger_cmd SEMI */ + 292, /* (268) trnm ::= nm DOT nm */ + 293, /* (269) tridxby ::= INDEXED BY nm */ + 293, /* (270) tridxby ::= NOT INDEXED */ + 291, /* (271) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */ + 291, /* (272) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */ + 291, /* (273) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */ + 291, /* (274) trigger_cmd ::= scanpt select scanpt */ + 217, /* (275) expr ::= RAISE LP IGNORE RP */ + 217, /* (276) expr ::= RAISE LP raisetype COMMA nm RP */ + 236, /* (277) raisetype ::= ROLLBACK */ + 236, /* (278) raisetype ::= ABORT */ + 236, /* (279) raisetype ::= FAIL */ + 190, /* (280) cmd ::= DROP TRIGGER ifexists fullname */ + 190, /* (281) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ + 190, /* (282) cmd ::= DETACH database_kw_opt expr */ + 295, /* (283) key_opt ::= */ + 295, /* (284) key_opt ::= KEY expr */ + 190, /* (285) cmd ::= REINDEX */ + 190, /* (286) cmd ::= REINDEX nm dbnm */ + 190, /* (287) cmd ::= ANALYZE */ + 190, /* (288) cmd ::= ANALYZE nm dbnm */ + 190, /* (289) cmd ::= ALTER TABLE fullname RENAME TO nm */ + 190, /* (290) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ + 190, /* (291) cmd ::= ALTER TABLE fullname DROP kwcolumn_opt nm */ + 296, /* (292) add_column_fullname ::= fullname */ + 190, /* (293) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */ + 190, /* (294) cmd ::= create_vtab */ + 190, /* (295) cmd ::= create_vtab LP vtabarglist RP */ + 298, /* (296) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ + 300, /* (297) vtabarg ::= */ + 301, /* (298) vtabargtoken ::= ANY */ + 301, /* (299) vtabargtoken ::= lp anylist RP */ + 302, /* (300) lp ::= LP */ + 266, /* (301) with ::= WITH wqlist */ + 266, /* (302) with ::= WITH RECURSIVE wqlist */ + 305, /* (303) wqas ::= AS */ + 305, /* (304) wqas ::= AS MATERIALIZED */ + 305, /* (305) wqas ::= AS NOT MATERIALIZED */ + 304, /* (306) wqitem ::= nm eidlist_opt wqas LP select RP */ + 241, /* (307) wqlist ::= wqitem */ + 241, /* (308) wqlist ::= wqlist COMMA wqitem */ + 306, /* (309) windowdefn_list ::= windowdefn_list COMMA windowdefn */ + 307, /* (310) windowdefn ::= nm AS LP window RP */ + 308, /* (311) window ::= PARTITION BY nexprlist orderby_opt frame_opt */ + 308, /* (312) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */ + 308, /* (313) window ::= ORDER BY sortlist frame_opt */ + 308, /* (314) window ::= nm ORDER BY sortlist frame_opt */ + 308, /* (315) window ::= nm frame_opt */ + 309, /* (316) frame_opt ::= */ + 309, /* (317) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */ + 309, /* (318) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */ + 313, /* (319) range_or_rows ::= RANGE|ROWS|GROUPS */ + 315, /* (320) frame_bound_s ::= frame_bound */ + 315, /* (321) frame_bound_s ::= UNBOUNDED PRECEDING */ + 316, /* (322) frame_bound_e ::= frame_bound */ + 316, /* (323) frame_bound_e ::= UNBOUNDED FOLLOWING */ + 314, /* (324) frame_bound ::= expr PRECEDING|FOLLOWING */ + 314, /* (325) frame_bound ::= CURRENT ROW */ + 317, /* (326) frame_exclude_opt ::= */ + 317, /* (327) frame_exclude_opt ::= EXCLUDE frame_exclude */ + 318, /* (328) frame_exclude ::= NO OTHERS */ + 318, /* (329) frame_exclude ::= CURRENT ROW */ + 318, /* (330) frame_exclude ::= GROUP|TIES */ + 251, /* (331) window_clause ::= WINDOW windowdefn_list */ + 273, /* (332) filter_over ::= filter_clause over_clause */ + 273, /* (333) filter_over ::= over_clause */ + 273, /* (334) filter_over ::= filter_clause */ + 312, /* (335) over_clause ::= OVER LP window RP */ + 312, /* (336) over_clause ::= OVER nm */ + 311, /* (337) filter_clause ::= FILTER LP WHERE expr RP */ + 185, /* (338) input ::= cmdlist */ + 186, /* (339) cmdlist ::= cmdlist ecmd */ + 186, /* (340) cmdlist ::= ecmd */ + 187, /* (341) ecmd ::= SEMI */ + 187, /* (342) ecmd ::= cmdx SEMI */ + 187, /* (343) ecmd ::= explain cmdx SEMI */ + 192, /* (344) trans_opt ::= */ + 192, /* (345) trans_opt ::= TRANSACTION */ + 192, /* (346) trans_opt ::= TRANSACTION nm */ + 194, /* (347) savepoint_opt ::= SAVEPOINT */ + 194, /* (348) savepoint_opt ::= */ + 190, /* (349) cmd ::= create_table create_table_args */ + 203, /* (350) table_option_set ::= table_option */ + 201, /* (351) columnlist ::= columnlist COMMA columnname carglist */ + 201, /* (352) columnlist ::= columnname carglist */ + 193, /* (353) nm ::= ID|INDEXED|JOIN_KW */ + 193, /* (354) nm ::= STRING */ + 208, /* (355) typetoken ::= typename */ + 209, /* (356) typename ::= ID|STRING */ + 210, /* (357) signed ::= plus_num */ + 210, /* (358) signed ::= minus_num */ + 207, /* (359) carglist ::= carglist ccons */ + 207, /* (360) carglist ::= */ + 215, /* (361) ccons ::= NULL onconf */ + 215, /* (362) ccons ::= GENERATED ALWAYS AS generated */ + 215, /* (363) ccons ::= AS generated */ + 202, /* (364) conslist_opt ::= COMMA conslist */ + 228, /* (365) conslist ::= conslist tconscomma tcons */ + 228, /* (366) conslist ::= tcons */ + 229, /* (367) tconscomma ::= */ + 233, /* (368) defer_subclause_opt ::= defer_subclause */ + 235, /* (369) resolvetype ::= raisetype */ + 239, /* (370) selectnowith ::= oneselect */ + 240, /* (371) oneselect ::= values */ + 254, /* (372) sclp ::= selcollist COMMA */ + 255, /* (373) as ::= ID|STRING */ + 264, /* (374) indexed_opt ::= indexed_by */ + 272, /* (375) returning ::= */ + 217, /* (376) expr ::= term */ + 274, /* (377) likeop ::= LIKE_KW|MATCH */ + 278, /* (378) case_operand ::= expr */ + 261, /* (379) exprlist ::= nexprlist */ + 284, /* (380) nmnum ::= plus_num */ + 284, /* (381) nmnum ::= nm */ + 284, /* (382) nmnum ::= ON */ + 284, /* (383) nmnum ::= DELETE */ + 284, /* (384) nmnum ::= DEFAULT */ + 211, /* (385) plus_num ::= INTEGER|FLOAT */ + 289, /* (386) foreach_clause ::= */ + 289, /* (387) foreach_clause ::= FOR EACH ROW */ + 292, /* (388) trnm ::= nm */ + 293, /* (389) tridxby ::= */ + 294, /* (390) database_kw_opt ::= DATABASE */ + 294, /* (391) database_kw_opt ::= */ + 297, /* (392) kwcolumn_opt ::= */ + 297, /* (393) kwcolumn_opt ::= COLUMNKW */ + 299, /* (394) vtabarglist ::= vtabarg */ + 299, /* (395) vtabarglist ::= vtabarglist COMMA vtabarg */ + 300, /* (396) vtabarg ::= vtabarg vtabargtoken */ + 303, /* (397) anylist ::= */ + 303, /* (398) anylist ::= anylist LP anylist RP */ + 303, /* (399) anylist ::= anylist ANY */ + 266, /* (400) with ::= */ + 306, /* (401) windowdefn_list ::= windowdefn */ + 308, /* (402) window ::= frame_opt */ +}; + +/* For rule J, yyRuleInfoNRhs[J] contains the negative of the number +** of symbols on the right-hand side of that rule. */ +static const signed char yyRuleInfoNRhs[] = { + -1, /* (0) explain ::= EXPLAIN */ + -3, /* (1) explain ::= EXPLAIN QUERY PLAN */ + -1, /* (2) cmdx ::= cmd */ + -3, /* (3) cmd ::= BEGIN transtype trans_opt */ + 0, /* (4) transtype ::= */ + -1, /* (5) transtype ::= DEFERRED */ + -1, /* (6) transtype ::= IMMEDIATE */ + -1, /* (7) transtype ::= EXCLUSIVE */ + -2, /* (8) cmd ::= COMMIT|END trans_opt */ + -2, /* (9) cmd ::= ROLLBACK trans_opt */ + -2, /* (10) cmd ::= SAVEPOINT nm */ + -3, /* (11) cmd ::= RELEASE savepoint_opt nm */ + -5, /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */ + -6, /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */ + -1, /* (14) createkw ::= CREATE */ + 0, /* (15) ifnotexists ::= */ + -3, /* (16) ifnotexists ::= IF NOT EXISTS */ + -1, /* (17) temp ::= TEMP */ + 0, /* (18) temp ::= */ + -5, /* (19) create_table_args ::= LP columnlist conslist_opt RP table_option_set */ + -2, /* (20) create_table_args ::= AS select */ + 0, /* (21) table_option_set ::= */ + -3, /* (22) table_option_set ::= table_option_set COMMA table_option */ + -2, /* (23) table_option ::= WITHOUT nm */ + -1, /* (24) table_option ::= nm */ + -2, /* (25) columnname ::= nm typetoken */ + 0, /* (26) typetoken ::= */ + -4, /* (27) typetoken ::= typename LP signed RP */ + -6, /* (28) typetoken ::= typename LP signed COMMA signed RP */ + -2, /* (29) typename ::= typename ID|STRING */ + 0, /* (30) scanpt ::= */ + 0, /* (31) scantok ::= */ + -2, /* (32) ccons ::= CONSTRAINT nm */ + -3, /* (33) ccons ::= DEFAULT scantok term */ + -4, /* (34) ccons ::= DEFAULT LP expr RP */ + -4, /* (35) ccons ::= DEFAULT PLUS scantok term */ + -4, /* (36) ccons ::= DEFAULT MINUS scantok term */ + -3, /* (37) ccons ::= DEFAULT scantok ID|INDEXED */ + -3, /* (38) ccons ::= NOT NULL onconf */ + -5, /* (39) ccons ::= PRIMARY KEY sortorder onconf autoinc */ + -2, /* (40) ccons ::= UNIQUE onconf */ + -4, /* (41) ccons ::= CHECK LP expr RP */ + -4, /* (42) ccons ::= REFERENCES nm eidlist_opt refargs */ + -1, /* (43) ccons ::= defer_subclause */ + -2, /* (44) ccons ::= COLLATE ID|STRING */ + -3, /* (45) generated ::= LP expr RP */ + -4, /* (46) generated ::= LP expr RP ID */ + 0, /* (47) autoinc ::= */ + -1, /* (48) autoinc ::= AUTOINCR */ + 0, /* (49) refargs ::= */ + -2, /* (50) refargs ::= refargs refarg */ + -2, /* (51) refarg ::= MATCH nm */ + -3, /* (52) refarg ::= ON INSERT refact */ + -3, /* (53) refarg ::= ON DELETE refact */ + -3, /* (54) refarg ::= ON UPDATE refact */ + -2, /* (55) refact ::= SET NULL */ + -2, /* (56) refact ::= SET DEFAULT */ + -1, /* (57) refact ::= CASCADE */ + -1, /* (58) refact ::= RESTRICT */ + -2, /* (59) refact ::= NO ACTION */ + -3, /* (60) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ + -2, /* (61) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ + 0, /* (62) init_deferred_pred_opt ::= */ + -2, /* (63) init_deferred_pred_opt ::= INITIALLY DEFERRED */ + -2, /* (64) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ + 0, /* (65) conslist_opt ::= */ + -1, /* (66) tconscomma ::= COMMA */ + -2, /* (67) tcons ::= CONSTRAINT nm */ + -7, /* (68) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ + -5, /* (69) tcons ::= UNIQUE LP sortlist RP onconf */ + -5, /* (70) tcons ::= CHECK LP expr RP onconf */ + -10, /* (71) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ + 0, /* (72) defer_subclause_opt ::= */ + 0, /* (73) onconf ::= */ + -3, /* (74) onconf ::= ON CONFLICT resolvetype */ + 0, /* (75) orconf ::= */ + -2, /* (76) orconf ::= OR resolvetype */ + -1, /* (77) resolvetype ::= IGNORE */ + -1, /* (78) resolvetype ::= REPLACE */ + -4, /* (79) cmd ::= DROP TABLE ifexists fullname */ + -2, /* (80) ifexists ::= IF EXISTS */ + 0, /* (81) ifexists ::= */ + -9, /* (82) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ + -4, /* (83) cmd ::= DROP VIEW ifexists fullname */ + -1, /* (84) cmd ::= select */ + -3, /* (85) select ::= WITH wqlist selectnowith */ + -4, /* (86) select ::= WITH RECURSIVE wqlist selectnowith */ + -1, /* (87) select ::= selectnowith */ + -3, /* (88) selectnowith ::= selectnowith multiselect_op oneselect */ + -1, /* (89) multiselect_op ::= UNION */ + -2, /* (90) multiselect_op ::= UNION ALL */ + -1, /* (91) multiselect_op ::= EXCEPT|INTERSECT */ + -9, /* (92) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ + -10, /* (93) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */ + -4, /* (94) values ::= VALUES LP nexprlist RP */ + -5, /* (95) values ::= values COMMA LP nexprlist RP */ + -1, /* (96) distinct ::= DISTINCT */ + -1, /* (97) distinct ::= ALL */ + 0, /* (98) distinct ::= */ + 0, /* (99) sclp ::= */ + -5, /* (100) selcollist ::= sclp scanpt expr scanpt as */ + -3, /* (101) selcollist ::= sclp scanpt STAR */ + -5, /* (102) selcollist ::= sclp scanpt nm DOT STAR */ + -2, /* (103) as ::= AS nm */ + 0, /* (104) as ::= */ + 0, /* (105) from ::= */ + -2, /* (106) from ::= FROM seltablist */ + -2, /* (107) stl_prefix ::= seltablist joinop */ + 0, /* (108) stl_prefix ::= */ + -5, /* (109) seltablist ::= stl_prefix nm dbnm as on_using */ + -6, /* (110) seltablist ::= stl_prefix nm dbnm as indexed_by on_using */ + -8, /* (111) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_using */ + -6, /* (112) seltablist ::= stl_prefix LP select RP as on_using */ + -6, /* (113) seltablist ::= stl_prefix LP seltablist RP as on_using */ + 0, /* (114) dbnm ::= */ + -2, /* (115) dbnm ::= DOT nm */ + -1, /* (116) fullname ::= nm */ + -3, /* (117) fullname ::= nm DOT nm */ + -1, /* (118) xfullname ::= nm */ + -3, /* (119) xfullname ::= nm DOT nm */ + -5, /* (120) xfullname ::= nm DOT nm AS nm */ + -3, /* (121) xfullname ::= nm AS nm */ + -1, /* (122) joinop ::= COMMA|JOIN */ + -2, /* (123) joinop ::= JOIN_KW JOIN */ + -3, /* (124) joinop ::= JOIN_KW nm JOIN */ + -4, /* (125) joinop ::= JOIN_KW nm nm JOIN */ + -2, /* (126) on_using ::= ON expr */ + -4, /* (127) on_using ::= USING LP idlist RP */ + 0, /* (128) on_using ::= */ + 0, /* (129) indexed_opt ::= */ + -3, /* (130) indexed_by ::= INDEXED BY nm */ + -2, /* (131) indexed_by ::= NOT INDEXED */ + 0, /* (132) orderby_opt ::= */ + -3, /* (133) orderby_opt ::= ORDER BY sortlist */ + -5, /* (134) sortlist ::= sortlist COMMA expr sortorder nulls */ + -3, /* (135) sortlist ::= expr sortorder nulls */ + -1, /* (136) sortorder ::= ASC */ + -1, /* (137) sortorder ::= DESC */ + 0, /* (138) sortorder ::= */ + -2, /* (139) nulls ::= NULLS FIRST */ + -2, /* (140) nulls ::= NULLS LAST */ + 0, /* (141) nulls ::= */ + 0, /* (142) groupby_opt ::= */ + -3, /* (143) groupby_opt ::= GROUP BY nexprlist */ + 0, /* (144) having_opt ::= */ + -2, /* (145) having_opt ::= HAVING expr */ + 0, /* (146) limit_opt ::= */ + -2, /* (147) limit_opt ::= LIMIT expr */ + -4, /* (148) limit_opt ::= LIMIT expr OFFSET expr */ + -4, /* (149) limit_opt ::= LIMIT expr COMMA expr */ + -6, /* (150) cmd ::= with DELETE FROM xfullname indexed_opt where_opt_ret */ + 0, /* (151) where_opt ::= */ + -2, /* (152) where_opt ::= WHERE expr */ + 0, /* (153) where_opt_ret ::= */ + -2, /* (154) where_opt_ret ::= WHERE expr */ + -2, /* (155) where_opt_ret ::= RETURNING selcollist */ + -4, /* (156) where_opt_ret ::= WHERE expr RETURNING selcollist */ + -9, /* (157) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt_ret */ + -5, /* (158) setlist ::= setlist COMMA nm EQ expr */ + -7, /* (159) setlist ::= setlist COMMA LP idlist RP EQ expr */ + -3, /* (160) setlist ::= nm EQ expr */ + -5, /* (161) setlist ::= LP idlist RP EQ expr */ + -7, /* (162) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */ + -8, /* (163) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES returning */ + 0, /* (164) upsert ::= */ + -2, /* (165) upsert ::= RETURNING selcollist */ + -12, /* (166) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt upsert */ + -9, /* (167) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING upsert */ + -5, /* (168) upsert ::= ON CONFLICT DO NOTHING returning */ + -8, /* (169) upsert ::= ON CONFLICT DO UPDATE SET setlist where_opt returning */ + -2, /* (170) returning ::= RETURNING selcollist */ + -2, /* (171) insert_cmd ::= INSERT orconf */ + -1, /* (172) insert_cmd ::= REPLACE */ + 0, /* (173) idlist_opt ::= */ + -3, /* (174) idlist_opt ::= LP idlist RP */ + -3, /* (175) idlist ::= idlist COMMA nm */ + -1, /* (176) idlist ::= nm */ + -3, /* (177) expr ::= LP expr RP */ + -1, /* (178) expr ::= ID|INDEXED|JOIN_KW */ + -3, /* (179) expr ::= nm DOT nm */ + -5, /* (180) expr ::= nm DOT nm DOT nm */ + -1, /* (181) term ::= NULL|FLOAT|BLOB */ + -1, /* (182) term ::= STRING */ + -1, /* (183) term ::= INTEGER */ + -1, /* (184) expr ::= VARIABLE */ + -3, /* (185) expr ::= expr COLLATE ID|STRING */ + -6, /* (186) expr ::= CAST LP expr AS typetoken RP */ + -5, /* (187) expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP */ + -4, /* (188) expr ::= ID|INDEXED|JOIN_KW LP STAR RP */ + -6, /* (189) expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP filter_over */ + -5, /* (190) expr ::= ID|INDEXED|JOIN_KW LP STAR RP filter_over */ + -1, /* (191) term ::= CTIME_KW */ + -5, /* (192) expr ::= LP nexprlist COMMA expr RP */ + -3, /* (193) expr ::= expr AND expr */ + -3, /* (194) expr ::= expr OR expr */ + -3, /* (195) expr ::= expr LT|GT|GE|LE expr */ + -3, /* (196) expr ::= expr EQ|NE expr */ + -3, /* (197) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ + -3, /* (198) expr ::= expr PLUS|MINUS expr */ + -3, /* (199) expr ::= expr STAR|SLASH|REM expr */ + -3, /* (200) expr ::= expr CONCAT expr */ + -2, /* (201) likeop ::= NOT LIKE_KW|MATCH */ + -3, /* (202) expr ::= expr likeop expr */ + -5, /* (203) expr ::= expr likeop expr ESCAPE expr */ + -2, /* (204) expr ::= expr ISNULL|NOTNULL */ + -3, /* (205) expr ::= expr NOT NULL */ + -3, /* (206) expr ::= expr IS expr */ + -4, /* (207) expr ::= expr IS NOT expr */ + -6, /* (208) expr ::= expr IS NOT DISTINCT FROM expr */ + -5, /* (209) expr ::= expr IS DISTINCT FROM expr */ + -2, /* (210) expr ::= NOT expr */ + -2, /* (211) expr ::= BITNOT expr */ + -2, /* (212) expr ::= PLUS|MINUS expr */ + -3, /* (213) expr ::= expr PTR expr */ + -1, /* (214) between_op ::= BETWEEN */ + -2, /* (215) between_op ::= NOT BETWEEN */ + -5, /* (216) expr ::= expr between_op expr AND expr */ + -1, /* (217) in_op ::= IN */ + -2, /* (218) in_op ::= NOT IN */ + -5, /* (219) expr ::= expr in_op LP exprlist RP */ + -3, /* (220) expr ::= LP select RP */ + -5, /* (221) expr ::= expr in_op LP select RP */ + -5, /* (222) expr ::= expr in_op nm dbnm paren_exprlist */ + -4, /* (223) expr ::= EXISTS LP select RP */ + -5, /* (224) expr ::= CASE case_operand case_exprlist case_else END */ + -5, /* (225) case_exprlist ::= case_exprlist WHEN expr THEN expr */ + -4, /* (226) case_exprlist ::= WHEN expr THEN expr */ + -2, /* (227) case_else ::= ELSE expr */ + 0, /* (228) case_else ::= */ + 0, /* (229) case_operand ::= */ + 0, /* (230) exprlist ::= */ + -3, /* (231) nexprlist ::= nexprlist COMMA expr */ + -1, /* (232) nexprlist ::= expr */ + 0, /* (233) paren_exprlist ::= */ + -3, /* (234) paren_exprlist ::= LP exprlist RP */ + -12, /* (235) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ + -1, /* (236) uniqueflag ::= UNIQUE */ + 0, /* (237) uniqueflag ::= */ + 0, /* (238) eidlist_opt ::= */ + -3, /* (239) eidlist_opt ::= LP eidlist RP */ + -5, /* (240) eidlist ::= eidlist COMMA nm collate sortorder */ + -3, /* (241) eidlist ::= nm collate sortorder */ + 0, /* (242) collate ::= */ + -2, /* (243) collate ::= COLLATE ID|STRING */ + -4, /* (244) cmd ::= DROP INDEX ifexists fullname */ + -2, /* (245) cmd ::= VACUUM vinto */ + -3, /* (246) cmd ::= VACUUM nm vinto */ + -2, /* (247) vinto ::= INTO expr */ + 0, /* (248) vinto ::= */ + -3, /* (249) cmd ::= PRAGMA nm dbnm */ + -5, /* (250) cmd ::= PRAGMA nm dbnm EQ nmnum */ + -6, /* (251) cmd ::= PRAGMA nm dbnm LP nmnum RP */ + -5, /* (252) cmd ::= PRAGMA nm dbnm EQ minus_num */ + -6, /* (253) cmd ::= PRAGMA nm dbnm LP minus_num RP */ + -2, /* (254) plus_num ::= PLUS INTEGER|FLOAT */ + -2, /* (255) minus_num ::= MINUS INTEGER|FLOAT */ + -5, /* (256) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ + -11, /* (257) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ + -1, /* (258) trigger_time ::= BEFORE|AFTER */ + -2, /* (259) trigger_time ::= INSTEAD OF */ + 0, /* (260) trigger_time ::= */ + -1, /* (261) trigger_event ::= DELETE|INSERT */ + -1, /* (262) trigger_event ::= UPDATE */ + -3, /* (263) trigger_event ::= UPDATE OF idlist */ + 0, /* (264) when_clause ::= */ + -2, /* (265) when_clause ::= WHEN expr */ + -3, /* (266) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ + -2, /* (267) trigger_cmd_list ::= trigger_cmd SEMI */ + -3, /* (268) trnm ::= nm DOT nm */ + -3, /* (269) tridxby ::= INDEXED BY nm */ + -2, /* (270) tridxby ::= NOT INDEXED */ + -9, /* (271) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */ + -8, /* (272) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */ + -6, /* (273) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */ + -3, /* (274) trigger_cmd ::= scanpt select scanpt */ + -4, /* (275) expr ::= RAISE LP IGNORE RP */ + -6, /* (276) expr ::= RAISE LP raisetype COMMA nm RP */ + -1, /* (277) raisetype ::= ROLLBACK */ + -1, /* (278) raisetype ::= ABORT */ + -1, /* (279) raisetype ::= FAIL */ + -4, /* (280) cmd ::= DROP TRIGGER ifexists fullname */ + -6, /* (281) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ + -3, /* (282) cmd ::= DETACH database_kw_opt expr */ + 0, /* (283) key_opt ::= */ + -2, /* (284) key_opt ::= KEY expr */ + -1, /* (285) cmd ::= REINDEX */ + -3, /* (286) cmd ::= REINDEX nm dbnm */ + -1, /* (287) cmd ::= ANALYZE */ + -3, /* (288) cmd ::= ANALYZE nm dbnm */ + -6, /* (289) cmd ::= ALTER TABLE fullname RENAME TO nm */ + -7, /* (290) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ + -6, /* (291) cmd ::= ALTER TABLE fullname DROP kwcolumn_opt nm */ + -1, /* (292) add_column_fullname ::= fullname */ + -8, /* (293) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */ + -1, /* (294) cmd ::= create_vtab */ + -4, /* (295) cmd ::= create_vtab LP vtabarglist RP */ + -8, /* (296) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ + 0, /* (297) vtabarg ::= */ + -1, /* (298) vtabargtoken ::= ANY */ + -3, /* (299) vtabargtoken ::= lp anylist RP */ + -1, /* (300) lp ::= LP */ + -2, /* (301) with ::= WITH wqlist */ + -3, /* (302) with ::= WITH RECURSIVE wqlist */ + -1, /* (303) wqas ::= AS */ + -2, /* (304) wqas ::= AS MATERIALIZED */ + -3, /* (305) wqas ::= AS NOT MATERIALIZED */ + -6, /* (306) wqitem ::= nm eidlist_opt wqas LP select RP */ + -1, /* (307) wqlist ::= wqitem */ + -3, /* (308) wqlist ::= wqlist COMMA wqitem */ + -3, /* (309) windowdefn_list ::= windowdefn_list COMMA windowdefn */ + -5, /* (310) windowdefn ::= nm AS LP window RP */ + -5, /* (311) window ::= PARTITION BY nexprlist orderby_opt frame_opt */ + -6, /* (312) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */ + -4, /* (313) window ::= ORDER BY sortlist frame_opt */ + -5, /* (314) window ::= nm ORDER BY sortlist frame_opt */ + -2, /* (315) window ::= nm frame_opt */ + 0, /* (316) frame_opt ::= */ + -3, /* (317) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */ + -6, /* (318) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */ + -1, /* (319) range_or_rows ::= RANGE|ROWS|GROUPS */ + -1, /* (320) frame_bound_s ::= frame_bound */ + -2, /* (321) frame_bound_s ::= UNBOUNDED PRECEDING */ + -1, /* (322) frame_bound_e ::= frame_bound */ + -2, /* (323) frame_bound_e ::= UNBOUNDED FOLLOWING */ + -2, /* (324) frame_bound ::= expr PRECEDING|FOLLOWING */ + -2, /* (325) frame_bound ::= CURRENT ROW */ + 0, /* (326) frame_exclude_opt ::= */ + -2, /* (327) frame_exclude_opt ::= EXCLUDE frame_exclude */ + -2, /* (328) frame_exclude ::= NO OTHERS */ + -2, /* (329) frame_exclude ::= CURRENT ROW */ + -1, /* (330) frame_exclude ::= GROUP|TIES */ + -2, /* (331) window_clause ::= WINDOW windowdefn_list */ + -2, /* (332) filter_over ::= filter_clause over_clause */ + -1, /* (333) filter_over ::= over_clause */ + -1, /* (334) filter_over ::= filter_clause */ + -4, /* (335) over_clause ::= OVER LP window RP */ + -2, /* (336) over_clause ::= OVER nm */ + -5, /* (337) filter_clause ::= FILTER LP WHERE expr RP */ + -1, /* (338) input ::= cmdlist */ + -2, /* (339) cmdlist ::= cmdlist ecmd */ + -1, /* (340) cmdlist ::= ecmd */ + -1, /* (341) ecmd ::= SEMI */ + -2, /* (342) ecmd ::= cmdx SEMI */ + -3, /* (343) ecmd ::= explain cmdx SEMI */ + 0, /* (344) trans_opt ::= */ + -1, /* (345) trans_opt ::= TRANSACTION */ + -2, /* (346) trans_opt ::= TRANSACTION nm */ + -1, /* (347) savepoint_opt ::= SAVEPOINT */ + 0, /* (348) savepoint_opt ::= */ + -2, /* (349) cmd ::= create_table create_table_args */ + -1, /* (350) table_option_set ::= table_option */ + -4, /* (351) columnlist ::= columnlist COMMA columnname carglist */ + -2, /* (352) columnlist ::= columnname carglist */ + -1, /* (353) nm ::= ID|INDEXED|JOIN_KW */ + -1, /* (354) nm ::= STRING */ + -1, /* (355) typetoken ::= typename */ + -1, /* (356) typename ::= ID|STRING */ + -1, /* (357) signed ::= plus_num */ + -1, /* (358) signed ::= minus_num */ + -2, /* (359) carglist ::= carglist ccons */ + 0, /* (360) carglist ::= */ + -2, /* (361) ccons ::= NULL onconf */ + -4, /* (362) ccons ::= GENERATED ALWAYS AS generated */ + -2, /* (363) ccons ::= AS generated */ + -2, /* (364) conslist_opt ::= COMMA conslist */ + -3, /* (365) conslist ::= conslist tconscomma tcons */ + -1, /* (366) conslist ::= tcons */ + 0, /* (367) tconscomma ::= */ + -1, /* (368) defer_subclause_opt ::= defer_subclause */ + -1, /* (369) resolvetype ::= raisetype */ + -1, /* (370) selectnowith ::= oneselect */ + -1, /* (371) oneselect ::= values */ + -2, /* (372) sclp ::= selcollist COMMA */ + -1, /* (373) as ::= ID|STRING */ + -1, /* (374) indexed_opt ::= indexed_by */ + 0, /* (375) returning ::= */ + -1, /* (376) expr ::= term */ + -1, /* (377) likeop ::= LIKE_KW|MATCH */ + -1, /* (378) case_operand ::= expr */ + -1, /* (379) exprlist ::= nexprlist */ + -1, /* (380) nmnum ::= plus_num */ + -1, /* (381) nmnum ::= nm */ + -1, /* (382) nmnum ::= ON */ + -1, /* (383) nmnum ::= DELETE */ + -1, /* (384) nmnum ::= DEFAULT */ + -1, /* (385) plus_num ::= INTEGER|FLOAT */ + 0, /* (386) foreach_clause ::= */ + -3, /* (387) foreach_clause ::= FOR EACH ROW */ + -1, /* (388) trnm ::= nm */ + 0, /* (389) tridxby ::= */ + -1, /* (390) database_kw_opt ::= DATABASE */ + 0, /* (391) database_kw_opt ::= */ + 0, /* (392) kwcolumn_opt ::= */ + -1, /* (393) kwcolumn_opt ::= COLUMNKW */ + -1, /* (394) vtabarglist ::= vtabarg */ + -3, /* (395) vtabarglist ::= vtabarglist COMMA vtabarg */ + -2, /* (396) vtabarg ::= vtabarg vtabargtoken */ + 0, /* (397) anylist ::= */ + -4, /* (398) anylist ::= anylist LP anylist RP */ + -2, /* (399) anylist ::= anylist ANY */ + 0, /* (400) with ::= */ + -1, /* (401) windowdefn_list ::= windowdefn */ + -1, /* (402) window ::= frame_opt */ }; static void yy_accept(yyParser*); /* Forward Declaration */ @@ -143862,58 +172779,13 @@ static YYACTIONTYPE yy_reduce( sqlite3ParserCTX_PDECL /* %extra_context */ ){ int yygoto; /* The next state */ - int yyact; /* The next action */ + YYACTIONTYPE yyact; /* The next action */ yyStackEntry *yymsp; /* The top of the parser's stack */ int yysize; /* Amount to pop the stack */ sqlite3ParserARG_FETCH (void)yyLookahead; (void)yyLookaheadToken; yymsp = yypParser->yytos; -#ifndef NDEBUG - if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){ - yysize = yyRuleInfo[yyruleno].nrhs; - if( yysize ){ - fprintf(yyTraceFILE, "%sReduce %d [%s], go to state %d.\n", - yyTracePrompt, - yyruleno, yyRuleName[yyruleno], yymsp[yysize].stateno); - }else{ - fprintf(yyTraceFILE, "%sReduce %d [%s].\n", - yyTracePrompt, yyruleno, yyRuleName[yyruleno]); - } - } -#endif /* NDEBUG */ - - /* Check that the stack is large enough to grow by a single entry - ** if the RHS of the rule is empty. This ensures that there is room - ** enough on the stack to push the LHS value */ - if( yyRuleInfo[yyruleno].nrhs==0 ){ -#ifdef YYTRACKMAXSTACKDEPTH - if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){ - yypParser->yyhwm++; - assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack)); - } -#endif -#if YYSTACKDEPTH>0 - if( yypParser->yytos>=yypParser->yystackEnd ){ - yyStackOverflow(yypParser); - /* The call to yyStackOverflow() above pops the stack until it is - ** empty, causing the main parser loop to exit. So the return value - ** is never used and does not matter. */ - return 0; - } -#else - if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){ - if( yyGrowStack(yypParser) ){ - yyStackOverflow(yypParser); - /* The call to yyStackOverflow() above pops the stack until it is - ** empty, causing the main parser loop to exit. So the return value - ** is never used and does not matter. */ - return 0; - } - yymsp = yypParser->yytos; - } -#endif - } switch( yyruleno ){ /* Beginning here are the reduction cases. A typical example @@ -143927,24 +172799,25 @@ static YYACTIONTYPE yy_reduce( /********** Begin reduce actions **********************************************/ YYMINORTYPE yylhsminor; case 0: /* explain ::= EXPLAIN */ -{ pParse->explain = 1; } +{ if( pParse->pReprepare==0 ) pParse->explain = 1; } break; case 1: /* explain ::= EXPLAIN QUERY PLAN */ -{ pParse->explain = 2; } +{ if( pParse->pReprepare==0 ) pParse->explain = 2; } break; case 2: /* cmdx ::= cmd */ { sqlite3FinishCoding(pParse); } break; case 3: /* cmd ::= BEGIN transtype trans_opt */ -{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy502);} +{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy394);} break; case 4: /* transtype ::= */ -{yymsp[1].minor.yy502 = TK_DEFERRED;} +{yymsp[1].minor.yy394 = TK_DEFERRED;} break; case 5: /* transtype ::= DEFERRED */ case 6: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==6); case 7: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==7); -{yymsp[0].minor.yy502 = yymsp[0].major; /*A-overwrites-X*/} + case 319: /* range_or_rows ::= RANGE|ROWS|GROUPS */ yytestcase(yyruleno==319); +{yymsp[0].minor.yy394 = yymsp[0].major; /*A-overwrites-X*/} break; case 8: /* cmd ::= COMMIT|END trans_opt */ case 9: /* cmd ::= ROLLBACK trans_opt */ yytestcase(yyruleno==9); @@ -143967,7 +172840,7 @@ static YYACTIONTYPE yy_reduce( break; case 13: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */ { - sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy502,0,0,yymsp[-2].minor.yy502); + sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy394,0,0,yymsp[-2].minor.yy394); } break; case 14: /* createkw ::= CREATE */ @@ -143975,645 +172848,712 @@ static YYACTIONTYPE yy_reduce( break; case 15: /* ifnotexists ::= */ case 18: /* temp ::= */ yytestcase(yyruleno==18); - case 21: /* table_options ::= */ yytestcase(yyruleno==21); - case 42: /* autoinc ::= */ yytestcase(yyruleno==42); - case 57: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==57); - case 67: /* defer_subclause_opt ::= */ yytestcase(yyruleno==67); - case 76: /* ifexists ::= */ yytestcase(yyruleno==76); - case 92: /* distinct ::= */ yytestcase(yyruleno==92); - case 224: /* collate ::= */ yytestcase(yyruleno==224); -{yymsp[1].minor.yy502 = 0;} + case 47: /* autoinc ::= */ yytestcase(yyruleno==47); + case 62: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==62); + case 72: /* defer_subclause_opt ::= */ yytestcase(yyruleno==72); + case 81: /* ifexists ::= */ yytestcase(yyruleno==81); + case 98: /* distinct ::= */ yytestcase(yyruleno==98); + case 242: /* collate ::= */ yytestcase(yyruleno==242); +{yymsp[1].minor.yy394 = 0;} break; case 16: /* ifnotexists ::= IF NOT EXISTS */ -{yymsp[-2].minor.yy502 = 1;} +{yymsp[-2].minor.yy394 = 1;} break; case 17: /* temp ::= TEMP */ - case 43: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==43); -{yymsp[0].minor.yy502 = 1;} +{yymsp[0].minor.yy394 = pParse->db->init.busy==0;} break; - case 19: /* create_table_args ::= LP columnlist conslist_opt RP table_options */ + case 19: /* create_table_args ::= LP columnlist conslist_opt RP table_option_set */ { - sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy502,0); + sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy285,0); } break; case 20: /* create_table_args ::= AS select */ { - sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy399); - sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy399); + sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy47); + sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy47); } break; - case 22: /* table_options ::= WITHOUT nm */ + case 21: /* table_option_set ::= */ +{yymsp[1].minor.yy285 = 0;} + break; + case 22: /* table_option_set ::= table_option_set COMMA table_option */ +{yylhsminor.yy285 = yymsp[-2].minor.yy285|yymsp[0].minor.yy285;} + yymsp[-2].minor.yy285 = yylhsminor.yy285; + break; + case 23: /* table_option ::= WITHOUT nm */ { if( yymsp[0].minor.yy0.n==5 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"rowid",5)==0 ){ - yymsp[-1].minor.yy502 = TF_WithoutRowid | TF_NoVisibleRowid; + yymsp[-1].minor.yy285 = TF_WithoutRowid | TF_NoVisibleRowid; }else{ - yymsp[-1].minor.yy502 = 0; + yymsp[-1].minor.yy285 = 0; sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z); } } break; - case 23: /* columnname ::= nm typetoken */ -{sqlite3AddColumn(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);} + case 24: /* table_option ::= nm */ +{ + if( yymsp[0].minor.yy0.n==6 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"strict",6)==0 ){ + yylhsminor.yy285 = TF_Strict; + }else{ + yylhsminor.yy285 = 0; + sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z); + } +} + yymsp[0].minor.yy285 = yylhsminor.yy285; break; - case 24: /* typetoken ::= */ - case 60: /* conslist_opt ::= */ yytestcase(yyruleno==60); - case 98: /* as ::= */ yytestcase(yyruleno==98); + case 25: /* columnname ::= nm typetoken */ +{sqlite3AddColumn(pParse,yymsp[-1].minor.yy0,yymsp[0].minor.yy0);} + break; + case 26: /* typetoken ::= */ + case 65: /* conslist_opt ::= */ yytestcase(yyruleno==65); + case 104: /* as ::= */ yytestcase(yyruleno==104); {yymsp[1].minor.yy0.n = 0; yymsp[1].minor.yy0.z = 0;} break; - case 25: /* typetoken ::= typename LP signed RP */ + case 27: /* typetoken ::= typename LP signed RP */ { yymsp[-3].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-3].minor.yy0.z); } break; - case 26: /* typetoken ::= typename LP signed COMMA signed RP */ + case 28: /* typetoken ::= typename LP signed COMMA signed RP */ { yymsp[-5].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-5].minor.yy0.z); } break; - case 27: /* typename ::= typename ID|STRING */ + case 29: /* typename ::= typename ID|STRING */ {yymsp[-1].minor.yy0.n=yymsp[0].minor.yy0.n+(int)(yymsp[0].minor.yy0.z-yymsp[-1].minor.yy0.z);} break; - case 28: /* scanpt ::= */ + case 30: /* scanpt ::= */ { assert( yyLookahead!=YYNOCODE ); - yymsp[1].minor.yy36 = yyLookaheadToken.z; + yymsp[1].minor.yy522 = yyLookaheadToken.z; } break; - case 29: /* ccons ::= CONSTRAINT nm */ - case 62: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==62); + case 31: /* scantok ::= */ +{ + assert( yyLookahead!=YYNOCODE ); + yymsp[1].minor.yy0 = yyLookaheadToken; +} + break; + case 32: /* ccons ::= CONSTRAINT nm */ + case 67: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==67); {pParse->constraintName = yymsp[0].minor.yy0;} break; - case 30: /* ccons ::= DEFAULT scanpt term scanpt */ -{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy182,yymsp[-2].minor.yy36,yymsp[0].minor.yy36);} + case 33: /* ccons ::= DEFAULT scantok term */ +{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy528,yymsp[-1].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);} break; - case 31: /* ccons ::= DEFAULT LP expr RP */ -{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy182,yymsp[-2].minor.yy0.z+1,yymsp[0].minor.yy0.z);} + case 34: /* ccons ::= DEFAULT LP expr RP */ +{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy528,yymsp[-2].minor.yy0.z+1,yymsp[0].minor.yy0.z);} break; - case 32: /* ccons ::= DEFAULT PLUS term scanpt */ -{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy182,yymsp[-2].minor.yy0.z,yymsp[0].minor.yy36);} + case 35: /* ccons ::= DEFAULT PLUS scantok term */ +{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy528,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);} break; - case 33: /* ccons ::= DEFAULT MINUS term scanpt */ + case 36: /* ccons ::= DEFAULT MINUS scantok term */ { - Expr *p = sqlite3PExpr(pParse, TK_UMINUS, yymsp[-1].minor.yy182, 0); - sqlite3AddDefaultValue(pParse,p,yymsp[-2].minor.yy0.z,yymsp[0].minor.yy36); + Expr *p = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy528, 0); + sqlite3AddDefaultValue(pParse,p,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]); } break; - case 34: /* ccons ::= DEFAULT scanpt ID|INDEXED */ + case 37: /* ccons ::= DEFAULT scantok ID|INDEXED */ { Expr *p = tokenExpr(pParse, TK_STRING, yymsp[0].minor.yy0); if( p ){ sqlite3ExprIdToTrueFalse(p); testcase( p->op==TK_TRUEFALSE && sqlite3ExprTruthValue(p) ); } - sqlite3AddDefaultValue(pParse,p,yymsp[0].minor.yy0.z,yymsp[0].minor.yy0.z+yymsp[0].minor.yy0.n); + sqlite3AddDefaultValue(pParse,p,yymsp[0].minor.yy0.z,yymsp[0].minor.yy0.z+yymsp[0].minor.yy0.n); } break; - case 35: /* ccons ::= NOT NULL onconf */ -{sqlite3AddNotNull(pParse, yymsp[0].minor.yy502);} + case 38: /* ccons ::= NOT NULL onconf */ +{sqlite3AddNotNull(pParse, yymsp[0].minor.yy394);} break; - case 36: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */ -{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy502,yymsp[0].minor.yy502,yymsp[-2].minor.yy502);} + case 39: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */ +{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy394,yymsp[0].minor.yy394,yymsp[-2].minor.yy394);} break; - case 37: /* ccons ::= UNIQUE onconf */ -{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy502,0,0,0,0, + case 40: /* ccons ::= UNIQUE onconf */ +{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy394,0,0,0,0, SQLITE_IDXTYPE_UNIQUE);} break; - case 38: /* ccons ::= CHECK LP expr RP */ -{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy182);} + case 41: /* ccons ::= CHECK LP expr RP */ +{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy528,yymsp[-2].minor.yy0.z,yymsp[0].minor.yy0.z);} break; - case 39: /* ccons ::= REFERENCES nm eidlist_opt refargs */ -{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy232,yymsp[0].minor.yy502);} + case 42: /* ccons ::= REFERENCES nm eidlist_opt refargs */ +{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy322,yymsp[0].minor.yy394);} break; - case 40: /* ccons ::= defer_subclause */ -{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy502);} + case 43: /* ccons ::= defer_subclause */ +{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy394);} break; - case 41: /* ccons ::= COLLATE ID|STRING */ + case 44: /* ccons ::= COLLATE ID|STRING */ {sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);} break; - case 44: /* refargs ::= */ -{ yymsp[1].minor.yy502 = OE_None*0x0101; /* EV: R-19803-45884 */} + case 45: /* generated ::= LP expr RP */ +{sqlite3AddGenerated(pParse,yymsp[-1].minor.yy528,0);} break; - case 45: /* refargs ::= refargs refarg */ -{ yymsp[-1].minor.yy502 = (yymsp[-1].minor.yy502 & ~yymsp[0].minor.yy107.mask) | yymsp[0].minor.yy107.value; } + case 46: /* generated ::= LP expr RP ID */ +{sqlite3AddGenerated(pParse,yymsp[-2].minor.yy528,&yymsp[0].minor.yy0);} break; - case 46: /* refarg ::= MATCH nm */ -{ yymsp[-1].minor.yy107.value = 0; yymsp[-1].minor.yy107.mask = 0x000000; } + case 48: /* autoinc ::= AUTOINCR */ +{yymsp[0].minor.yy394 = 1;} break; - case 47: /* refarg ::= ON INSERT refact */ -{ yymsp[-2].minor.yy107.value = 0; yymsp[-2].minor.yy107.mask = 0x000000; } + case 49: /* refargs ::= */ +{ yymsp[1].minor.yy394 = OE_None*0x0101; /* EV: R-19803-45884 */} break; - case 48: /* refarg ::= ON DELETE refact */ -{ yymsp[-2].minor.yy107.value = yymsp[0].minor.yy502; yymsp[-2].minor.yy107.mask = 0x0000ff; } + case 50: /* refargs ::= refargs refarg */ +{ yymsp[-1].minor.yy394 = (yymsp[-1].minor.yy394 & ~yymsp[0].minor.yy231.mask) | yymsp[0].minor.yy231.value; } break; - case 49: /* refarg ::= ON UPDATE refact */ -{ yymsp[-2].minor.yy107.value = yymsp[0].minor.yy502<<8; yymsp[-2].minor.yy107.mask = 0x00ff00; } + case 51: /* refarg ::= MATCH nm */ +{ yymsp[-1].minor.yy231.value = 0; yymsp[-1].minor.yy231.mask = 0x000000; } break; - case 50: /* refact ::= SET NULL */ -{ yymsp[-1].minor.yy502 = OE_SetNull; /* EV: R-33326-45252 */} + case 52: /* refarg ::= ON INSERT refact */ +{ yymsp[-2].minor.yy231.value = 0; yymsp[-2].minor.yy231.mask = 0x000000; } break; - case 51: /* refact ::= SET DEFAULT */ -{ yymsp[-1].minor.yy502 = OE_SetDflt; /* EV: R-33326-45252 */} + case 53: /* refarg ::= ON DELETE refact */ +{ yymsp[-2].minor.yy231.value = yymsp[0].minor.yy394; yymsp[-2].minor.yy231.mask = 0x0000ff; } break; - case 52: /* refact ::= CASCADE */ -{ yymsp[0].minor.yy502 = OE_Cascade; /* EV: R-33326-45252 */} + case 54: /* refarg ::= ON UPDATE refact */ +{ yymsp[-2].minor.yy231.value = yymsp[0].minor.yy394<<8; yymsp[-2].minor.yy231.mask = 0x00ff00; } break; - case 53: /* refact ::= RESTRICT */ -{ yymsp[0].minor.yy502 = OE_Restrict; /* EV: R-33326-45252 */} + case 55: /* refact ::= SET NULL */ +{ yymsp[-1].minor.yy394 = OE_SetNull; /* EV: R-33326-45252 */} break; - case 54: /* refact ::= NO ACTION */ -{ yymsp[-1].minor.yy502 = OE_None; /* EV: R-33326-45252 */} + case 56: /* refact ::= SET DEFAULT */ +{ yymsp[-1].minor.yy394 = OE_SetDflt; /* EV: R-33326-45252 */} break; - case 55: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ -{yymsp[-2].minor.yy502 = 0;} + case 57: /* refact ::= CASCADE */ +{ yymsp[0].minor.yy394 = OE_Cascade; /* EV: R-33326-45252 */} break; - case 56: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ - case 71: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==71); - case 155: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==155); -{yymsp[-1].minor.yy502 = yymsp[0].minor.yy502;} + case 58: /* refact ::= RESTRICT */ +{ yymsp[0].minor.yy394 = OE_Restrict; /* EV: R-33326-45252 */} break; - case 58: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */ - case 75: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==75); - case 196: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==196); - case 199: /* in_op ::= NOT IN */ yytestcase(yyruleno==199); - case 225: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==225); -{yymsp[-1].minor.yy502 = 1;} + case 59: /* refact ::= NO ACTION */ +{ yymsp[-1].minor.yy394 = OE_None; /* EV: R-33326-45252 */} break; - case 59: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ -{yymsp[-1].minor.yy502 = 0;} + case 60: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ +{yymsp[-2].minor.yy394 = 0;} break; - case 61: /* tconscomma ::= COMMA */ + case 61: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ + case 76: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==76); + case 171: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==171); +{yymsp[-1].minor.yy394 = yymsp[0].minor.yy394;} + break; + case 63: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */ + case 80: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==80); + case 215: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==215); + case 218: /* in_op ::= NOT IN */ yytestcase(yyruleno==218); + case 243: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==243); +{yymsp[-1].minor.yy394 = 1;} + break; + case 64: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ +{yymsp[-1].minor.yy394 = 0;} + break; + case 66: /* tconscomma ::= COMMA */ {pParse->constraintName.n = 0;} break; - case 63: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ -{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy232,yymsp[0].minor.yy502,yymsp[-2].minor.yy502,0);} + case 68: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ +{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy322,yymsp[0].minor.yy394,yymsp[-2].minor.yy394,0);} break; - case 64: /* tcons ::= UNIQUE LP sortlist RP onconf */ -{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy232,yymsp[0].minor.yy502,0,0,0,0, + case 69: /* tcons ::= UNIQUE LP sortlist RP onconf */ +{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy322,yymsp[0].minor.yy394,0,0,0,0, SQLITE_IDXTYPE_UNIQUE);} break; - case 65: /* tcons ::= CHECK LP expr RP onconf */ -{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy182);} + case 70: /* tcons ::= CHECK LP expr RP onconf */ +{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy528,yymsp[-3].minor.yy0.z,yymsp[-1].minor.yy0.z);} break; - case 66: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ + case 71: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ { - sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy232, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy232, yymsp[-1].minor.yy502); - sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy502); + sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy322, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy322, yymsp[-1].minor.yy394); + sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy394); } break; - case 68: /* onconf ::= */ - case 70: /* orconf ::= */ yytestcase(yyruleno==70); -{yymsp[1].minor.yy502 = OE_Default;} + case 73: /* onconf ::= */ + case 75: /* orconf ::= */ yytestcase(yyruleno==75); +{yymsp[1].minor.yy394 = OE_Default;} break; - case 69: /* onconf ::= ON CONFLICT resolvetype */ -{yymsp[-2].minor.yy502 = yymsp[0].minor.yy502;} + case 74: /* onconf ::= ON CONFLICT resolvetype */ +{yymsp[-2].minor.yy394 = yymsp[0].minor.yy394;} break; - case 72: /* resolvetype ::= IGNORE */ -{yymsp[0].minor.yy502 = OE_Ignore;} + case 77: /* resolvetype ::= IGNORE */ +{yymsp[0].minor.yy394 = OE_Ignore;} break; - case 73: /* resolvetype ::= REPLACE */ - case 156: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==156); -{yymsp[0].minor.yy502 = OE_Replace;} + case 78: /* resolvetype ::= REPLACE */ + case 172: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==172); +{yymsp[0].minor.yy394 = OE_Replace;} break; - case 74: /* cmd ::= DROP TABLE ifexists fullname */ + case 79: /* cmd ::= DROP TABLE ifexists fullname */ { - sqlite3DropTable(pParse, yymsp[0].minor.yy427, 0, yymsp[-1].minor.yy502); + sqlite3DropTable(pParse, yymsp[0].minor.yy131, 0, yymsp[-1].minor.yy394); } break; - case 77: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ + case 82: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ { - sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy232, yymsp[0].minor.yy399, yymsp[-7].minor.yy502, yymsp[-5].minor.yy502); + sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy322, yymsp[0].minor.yy47, yymsp[-7].minor.yy394, yymsp[-5].minor.yy394); } break; - case 78: /* cmd ::= DROP VIEW ifexists fullname */ + case 83: /* cmd ::= DROP VIEW ifexists fullname */ { - sqlite3DropTable(pParse, yymsp[0].minor.yy427, 1, yymsp[-1].minor.yy502); + sqlite3DropTable(pParse, yymsp[0].minor.yy131, 1, yymsp[-1].minor.yy394); } break; - case 79: /* cmd ::= select */ + case 84: /* cmd ::= select */ { - SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0}; - sqlite3Select(pParse, yymsp[0].minor.yy399, &dest); - sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy399); + SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0, 0}; + sqlite3Select(pParse, yymsp[0].minor.yy47, &dest); + sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy47); } break; - case 80: /* select ::= WITH wqlist selectnowith */ -{ - Select *p = yymsp[0].minor.yy399; - if( p ){ - p->pWith = yymsp[-1].minor.yy91; - parserDoubleLinkSelect(pParse, p); - }else{ - sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy91); - } - yymsp[-2].minor.yy399 = p; -} + case 85: /* select ::= WITH wqlist selectnowith */ +{yymsp[-2].minor.yy47 = attachWithToSelect(pParse,yymsp[0].minor.yy47,yymsp[-1].minor.yy521);} break; - case 81: /* select ::= WITH RECURSIVE wqlist selectnowith */ -{ - Select *p = yymsp[0].minor.yy399; - if( p ){ - p->pWith = yymsp[-1].minor.yy91; - parserDoubleLinkSelect(pParse, p); - }else{ - sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy91); - } - yymsp[-3].minor.yy399 = p; -} + case 86: /* select ::= WITH RECURSIVE wqlist selectnowith */ +{yymsp[-3].minor.yy47 = attachWithToSelect(pParse,yymsp[0].minor.yy47,yymsp[-1].minor.yy521);} break; - case 82: /* select ::= selectnowith */ + case 87: /* select ::= selectnowith */ { - Select *p = yymsp[0].minor.yy399; + Select *p = yymsp[0].minor.yy47; if( p ){ parserDoubleLinkSelect(pParse, p); } - yymsp[0].minor.yy399 = p; /*A-overwrites-X*/ } break; - case 83: /* selectnowith ::= selectnowith multiselect_op oneselect */ + case 88: /* selectnowith ::= selectnowith multiselect_op oneselect */ { - Select *pRhs = yymsp[0].minor.yy399; - Select *pLhs = yymsp[-2].minor.yy399; + Select *pRhs = yymsp[0].minor.yy47; + Select *pLhs = yymsp[-2].minor.yy47; if( pRhs && pRhs->pPrior ){ SrcList *pFrom; Token x; x.n = 0; parserDoubleLinkSelect(pParse, pRhs); - pFrom = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&x,pRhs,0,0); + pFrom = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&x,pRhs,0); pRhs = sqlite3SelectNew(pParse,0,pFrom,0,0,0,0,0,0); } if( pRhs ){ - pRhs->op = (u8)yymsp[-1].minor.yy502; + pRhs->op = (u8)yymsp[-1].minor.yy394; pRhs->pPrior = pLhs; if( ALWAYS(pLhs) ) pLhs->selFlags &= ~SF_MultiValue; pRhs->selFlags &= ~SF_MultiValue; - if( yymsp[-1].minor.yy502!=TK_ALL ) pParse->hasCompound = 1; + if( yymsp[-1].minor.yy394!=TK_ALL ) pParse->hasCompound = 1; }else{ sqlite3SelectDelete(pParse->db, pLhs); } - yymsp[-2].minor.yy399 = pRhs; + yymsp[-2].minor.yy47 = pRhs; } break; - case 84: /* multiselect_op ::= UNION */ - case 86: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==86); -{yymsp[0].minor.yy502 = yymsp[0].major; /*A-overwrites-OP*/} + case 89: /* multiselect_op ::= UNION */ + case 91: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==91); +{yymsp[0].minor.yy394 = yymsp[0].major; /*A-overwrites-OP*/} break; - case 85: /* multiselect_op ::= UNION ALL */ -{yymsp[-1].minor.yy502 = TK_ALL;} + case 90: /* multiselect_op ::= UNION ALL */ +{yymsp[-1].minor.yy394 = TK_ALL;} break; - case 87: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ + case 92: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ { -#if SELECTTRACE_ENABLED - Token s = yymsp[-8].minor.yy0; /*A-overwrites-S*/ -#endif - yymsp[-8].minor.yy399 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy232,yymsp[-5].minor.yy427,yymsp[-4].minor.yy182,yymsp[-3].minor.yy232,yymsp[-2].minor.yy182,yymsp[-1].minor.yy232,yymsp[-7].minor.yy502,yymsp[0].minor.yy182); -#if SELECTTRACE_ENABLED - /* Populate the Select.zSelName[] string that is used to help with - ** query planner debugging, to differentiate between multiple Select - ** objects in a complex query. - ** - ** If the SELECT keyword is immediately followed by a C-style comment - ** then extract the first few alphanumeric characters from within that - ** comment to be the zSelName value. Otherwise, the label is #N where - ** is an integer that is incremented with each SELECT statement seen. - */ - if( yymsp[-8].minor.yy399!=0 ){ - const char *z = s.z+6; - int i; - sqlite3_snprintf(sizeof(yymsp[-8].minor.yy399->zSelName), yymsp[-8].minor.yy399->zSelName,"#%d",++pParse->nSelect); - while( z[0]==' ' ) z++; - if( z[0]=='/' && z[1]=='*' ){ - z += 2; - while( z[0]==' ' ) z++; - for(i=0; sqlite3Isalnum(z[i]); i++){} - sqlite3_snprintf(sizeof(yymsp[-8].minor.yy399->zSelName), yymsp[-8].minor.yy399->zSelName, "%.*s", i, z); - } + yymsp[-8].minor.yy47 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy322,yymsp[-5].minor.yy131,yymsp[-4].minor.yy528,yymsp[-3].minor.yy322,yymsp[-2].minor.yy528,yymsp[-1].minor.yy322,yymsp[-7].minor.yy394,yymsp[0].minor.yy528); +} + break; + case 93: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */ +{ + yymsp[-9].minor.yy47 = sqlite3SelectNew(pParse,yymsp[-7].minor.yy322,yymsp[-6].minor.yy131,yymsp[-5].minor.yy528,yymsp[-4].minor.yy322,yymsp[-3].minor.yy528,yymsp[-1].minor.yy322,yymsp[-8].minor.yy394,yymsp[0].minor.yy528); + if( yymsp[-9].minor.yy47 ){ + yymsp[-9].minor.yy47->pWinDefn = yymsp[-2].minor.yy41; + }else{ + sqlite3WindowListDelete(pParse->db, yymsp[-2].minor.yy41); } -#endif /* SELECTRACE_ENABLED */ } break; - case 88: /* values ::= VALUES LP nexprlist RP */ + case 94: /* values ::= VALUES LP nexprlist RP */ { - yymsp[-3].minor.yy399 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy232,0,0,0,0,0,SF_Values,0); + yymsp[-3].minor.yy47 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy322,0,0,0,0,0,SF_Values,0); } break; - case 89: /* values ::= values COMMA LP exprlist RP */ + case 95: /* values ::= values COMMA LP nexprlist RP */ { - Select *pRight, *pLeft = yymsp[-4].minor.yy399; - pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy232,0,0,0,0,0,SF_Values|SF_MultiValue,0); + Select *pRight, *pLeft = yymsp[-4].minor.yy47; + pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy322,0,0,0,0,0,SF_Values|SF_MultiValue,0); if( ALWAYS(pLeft) ) pLeft->selFlags &= ~SF_MultiValue; if( pRight ){ pRight->op = TK_ALL; pRight->pPrior = pLeft; - yymsp[-4].minor.yy399 = pRight; + yymsp[-4].minor.yy47 = pRight; }else{ - yymsp[-4].minor.yy399 = pLeft; + yymsp[-4].minor.yy47 = pLeft; } } break; - case 90: /* distinct ::= DISTINCT */ -{yymsp[0].minor.yy502 = SF_Distinct;} + case 96: /* distinct ::= DISTINCT */ +{yymsp[0].minor.yy394 = SF_Distinct;} break; - case 91: /* distinct ::= ALL */ -{yymsp[0].minor.yy502 = SF_All;} + case 97: /* distinct ::= ALL */ +{yymsp[0].minor.yy394 = SF_All;} break; - case 93: /* sclp ::= */ - case 126: /* orderby_opt ::= */ yytestcase(yyruleno==126); - case 133: /* groupby_opt ::= */ yytestcase(yyruleno==133); - case 212: /* exprlist ::= */ yytestcase(yyruleno==212); - case 215: /* paren_exprlist ::= */ yytestcase(yyruleno==215); - case 220: /* eidlist_opt ::= */ yytestcase(yyruleno==220); -{yymsp[1].minor.yy232 = 0;} + case 99: /* sclp ::= */ + case 132: /* orderby_opt ::= */ yytestcase(yyruleno==132); + case 142: /* groupby_opt ::= */ yytestcase(yyruleno==142); + case 230: /* exprlist ::= */ yytestcase(yyruleno==230); + case 233: /* paren_exprlist ::= */ yytestcase(yyruleno==233); + case 238: /* eidlist_opt ::= */ yytestcase(yyruleno==238); +{yymsp[1].minor.yy322 = 0;} break; - case 94: /* selcollist ::= sclp scanpt expr scanpt as */ + case 100: /* selcollist ::= sclp scanpt expr scanpt as */ { - yymsp[-4].minor.yy232 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy232, yymsp[-2].minor.yy182); - if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy232, &yymsp[0].minor.yy0, 1); - sqlite3ExprListSetSpan(pParse,yymsp[-4].minor.yy232,yymsp[-3].minor.yy36,yymsp[-1].minor.yy36); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy322, yymsp[-2].minor.yy528); + if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy322, &yymsp[0].minor.yy0, 1); + sqlite3ExprListSetSpan(pParse,yymsp[-4].minor.yy322,yymsp[-3].minor.yy522,yymsp[-1].minor.yy522); } break; - case 95: /* selcollist ::= sclp scanpt STAR */ + case 101: /* selcollist ::= sclp scanpt STAR */ { Expr *p = sqlite3Expr(pParse->db, TK_ASTERISK, 0); - yymsp[-2].minor.yy232 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy232, p); + sqlite3ExprSetErrorOffset(p, (int)(yymsp[0].minor.yy0.z - pParse->zTail)); + yymsp[-2].minor.yy322 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy322, p); } break; - case 96: /* selcollist ::= sclp scanpt nm DOT STAR */ + case 102: /* selcollist ::= sclp scanpt nm DOT STAR */ { - Expr *pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0); - Expr *pLeft = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); - Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight); - yymsp[-4].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy232, pDot); + Expr *pRight, *pLeft, *pDot; + pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0); + sqlite3ExprSetErrorOffset(pRight, (int)(yymsp[0].minor.yy0.z - pParse->zTail)); + pLeft = tokenExpr(pParse, TK_ID, yymsp[-2].minor.yy0); + pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy322, pDot); } break; - case 97: /* as ::= AS nm */ - case 108: /* dbnm ::= DOT nm */ yytestcase(yyruleno==108); - case 234: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==234); - case 235: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==235); + case 103: /* as ::= AS nm */ + case 115: /* dbnm ::= DOT nm */ yytestcase(yyruleno==115); + case 254: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==254); + case 255: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==255); {yymsp[-1].minor.yy0 = yymsp[0].minor.yy0;} break; - case 99: /* from ::= */ -{yymsp[1].minor.yy427 = sqlite3DbMallocZero(pParse->db, sizeof(*yymsp[1].minor.yy427));} + case 105: /* from ::= */ + case 108: /* stl_prefix ::= */ yytestcase(yyruleno==108); +{yymsp[1].minor.yy131 = 0;} break; - case 100: /* from ::= FROM seltablist */ + case 106: /* from ::= FROM seltablist */ { - yymsp[-1].minor.yy427 = yymsp[0].minor.yy427; - sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy427); + yymsp[-1].minor.yy131 = yymsp[0].minor.yy131; + sqlite3SrcListShiftJoinType(pParse,yymsp[-1].minor.yy131); } break; - case 101: /* stl_prefix ::= seltablist joinop */ + case 107: /* stl_prefix ::= seltablist joinop */ { - if( ALWAYS(yymsp[-1].minor.yy427 && yymsp[-1].minor.yy427->nSrc>0) ) yymsp[-1].minor.yy427->a[yymsp[-1].minor.yy427->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy502; + if( ALWAYS(yymsp[-1].minor.yy131 && yymsp[-1].minor.yy131->nSrc>0) ) yymsp[-1].minor.yy131->a[yymsp[-1].minor.yy131->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy394; } break; - case 102: /* stl_prefix ::= */ -{yymsp[1].minor.yy427 = 0;} - break; - case 103: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */ + case 109: /* seltablist ::= stl_prefix nm dbnm as on_using */ { - yymsp[-6].minor.yy427 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy427,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy182,yymsp[0].minor.yy510); - sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy427, &yymsp[-2].minor.yy0); + yymsp[-4].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-4].minor.yy131,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0,&yymsp[0].minor.yy561); } break; - case 104: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */ + case 110: /* seltablist ::= stl_prefix nm dbnm as indexed_by on_using */ { - yymsp[-8].minor.yy427 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy427,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy182,yymsp[0].minor.yy510); - sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy427, yymsp[-4].minor.yy232); + yymsp[-5].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-5].minor.yy131,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,0,&yymsp[0].minor.yy561); + sqlite3SrcListIndexedBy(pParse, yymsp[-5].minor.yy131, &yymsp[-1].minor.yy0); } break; - case 105: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */ + case 111: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_using */ { - yymsp[-6].minor.yy427 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy427,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy399,yymsp[-1].minor.yy182,yymsp[0].minor.yy510); + yymsp[-7].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-7].minor.yy131,&yymsp[-6].minor.yy0,&yymsp[-5].minor.yy0,&yymsp[-1].minor.yy0,0,&yymsp[0].minor.yy561); + sqlite3SrcListFuncArgs(pParse, yymsp[-7].minor.yy131, yymsp[-3].minor.yy322); +} + break; + case 112: /* seltablist ::= stl_prefix LP select RP as on_using */ +{ + yymsp[-5].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-5].minor.yy131,0,0,&yymsp[-1].minor.yy0,yymsp[-3].minor.yy47,&yymsp[0].minor.yy561); } break; - case 106: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ + case 113: /* seltablist ::= stl_prefix LP seltablist RP as on_using */ { - if( yymsp[-6].minor.yy427==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy182==0 && yymsp[0].minor.yy510==0 ){ - yymsp[-6].minor.yy427 = yymsp[-4].minor.yy427; - }else if( yymsp[-4].minor.yy427->nSrc==1 ){ - yymsp[-6].minor.yy427 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy427,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy182,yymsp[0].minor.yy510); - if( yymsp[-6].minor.yy427 ){ - struct SrcList_item *pNew = &yymsp[-6].minor.yy427->a[yymsp[-6].minor.yy427->nSrc-1]; - struct SrcList_item *pOld = yymsp[-4].minor.yy427->a; + if( yymsp[-5].minor.yy131==0 && yymsp[-1].minor.yy0.n==0 && yymsp[0].minor.yy561.pOn==0 && yymsp[0].minor.yy561.pUsing==0 ){ + yymsp[-5].minor.yy131 = yymsp[-3].minor.yy131; + }else if( ALWAYS(yymsp[-3].minor.yy131!=0) && yymsp[-3].minor.yy131->nSrc==1 ){ + yymsp[-5].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-5].minor.yy131,0,0,&yymsp[-1].minor.yy0,0,&yymsp[0].minor.yy561); + if( yymsp[-5].minor.yy131 ){ + SrcItem *pNew = &yymsp[-5].minor.yy131->a[yymsp[-5].minor.yy131->nSrc-1]; + SrcItem *pOld = yymsp[-3].minor.yy131->a; pNew->zName = pOld->zName; pNew->zDatabase = pOld->zDatabase; pNew->pSelect = pOld->pSelect; + if( pNew->pSelect && (pNew->pSelect->selFlags & SF_NestedFrom)!=0 ){ + pNew->fg.isNestedFrom = 1; + } + if( pOld->fg.isTabFunc ){ + pNew->u1.pFuncArg = pOld->u1.pFuncArg; + pOld->u1.pFuncArg = 0; + pOld->fg.isTabFunc = 0; + pNew->fg.isTabFunc = 1; + } pOld->zName = pOld->zDatabase = 0; pOld->pSelect = 0; } - sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy427); + sqlite3SrcListDelete(pParse->db, yymsp[-3].minor.yy131); }else{ Select *pSubquery; - sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy427); - pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy427,0,0,0,0,SF_NestedFrom,0); - yymsp[-6].minor.yy427 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy427,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy182,yymsp[0].minor.yy510); + sqlite3SrcListShiftJoinType(pParse,yymsp[-3].minor.yy131); + pSubquery = sqlite3SelectNew(pParse,0,yymsp[-3].minor.yy131,0,0,0,0,SF_NestedFrom,0); + yymsp[-5].minor.yy131 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-5].minor.yy131,0,0,&yymsp[-1].minor.yy0,pSubquery,&yymsp[0].minor.yy561); } } break; - case 107: /* dbnm ::= */ - case 121: /* indexed_opt ::= */ yytestcase(yyruleno==121); + case 114: /* dbnm ::= */ + case 129: /* indexed_opt ::= */ yytestcase(yyruleno==129); {yymsp[1].minor.yy0.z=0; yymsp[1].minor.yy0.n=0;} break; - case 109: /* fullname ::= nm */ - case 111: /* xfullname ::= nm */ yytestcase(yyruleno==111); -{yymsp[0].minor.yy427 = sqlite3SrcListAppend(pParse->db,0,&yymsp[0].minor.yy0,0); /*A-overwrites-X*/} - break; - case 110: /* fullname ::= nm DOT nm */ - case 112: /* xfullname ::= nm DOT nm */ yytestcase(yyruleno==112); -{yymsp[-2].minor.yy427 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/} - break; - case 113: /* xfullname ::= nm DOT nm AS nm */ + case 116: /* fullname ::= nm */ { - yymsp[-4].minor.yy427 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,&yymsp[-2].minor.yy0); /*A-overwrites-X*/ - if( yymsp[-4].minor.yy427 ) yymsp[-4].minor.yy427->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0); + yylhsminor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0); + if( IN_RENAME_OBJECT && yylhsminor.yy131 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy131->a[0].zName, &yymsp[0].minor.yy0); +} + yymsp[0].minor.yy131 = yylhsminor.yy131; + break; + case 117: /* fullname ::= nm DOT nm */ +{ + yylhsminor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); + if( IN_RENAME_OBJECT && yylhsminor.yy131 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy131->a[0].zName, &yymsp[0].minor.yy0); +} + yymsp[-2].minor.yy131 = yylhsminor.yy131; + break; + case 118: /* xfullname ::= nm */ +{yymsp[0].minor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0); /*A-overwrites-X*/} + break; + case 119: /* xfullname ::= nm DOT nm */ +{yymsp[-2].minor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/} + break; + case 120: /* xfullname ::= nm DOT nm AS nm */ +{ + yymsp[-4].minor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,&yymsp[-2].minor.yy0); /*A-overwrites-X*/ + if( yymsp[-4].minor.yy131 ) yymsp[-4].minor.yy131->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0); } break; - case 114: /* xfullname ::= nm AS nm */ -{ - yymsp[-2].minor.yy427 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-2].minor.yy0,0); /*A-overwrites-X*/ - if( yymsp[-2].minor.yy427 ) yymsp[-2].minor.yy427->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0); + case 121: /* xfullname ::= nm AS nm */ +{ + yymsp[-2].minor.yy131 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,0); /*A-overwrites-X*/ + if( yymsp[-2].minor.yy131 ) yymsp[-2].minor.yy131->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0); } break; - case 115: /* joinop ::= COMMA|JOIN */ -{ yymsp[0].minor.yy502 = JT_INNER; } + case 122: /* joinop ::= COMMA|JOIN */ +{ yymsp[0].minor.yy394 = JT_INNER; } break; - case 116: /* joinop ::= JOIN_KW JOIN */ -{yymsp[-1].minor.yy502 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0); /*X-overwrites-A*/} + case 123: /* joinop ::= JOIN_KW JOIN */ +{yymsp[-1].minor.yy394 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0); /*X-overwrites-A*/} break; - case 117: /* joinop ::= JOIN_KW nm JOIN */ -{yymsp[-2].minor.yy502 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/} + case 124: /* joinop ::= JOIN_KW nm JOIN */ +{yymsp[-2].minor.yy394 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/} break; - case 118: /* joinop ::= JOIN_KW nm nm JOIN */ -{yymsp[-3].minor.yy502 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/} + case 125: /* joinop ::= JOIN_KW nm nm JOIN */ +{yymsp[-3].minor.yy394 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/} break; - case 119: /* on_opt ::= ON expr */ - case 136: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==136); - case 143: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==143); - case 208: /* case_else ::= ELSE expr */ yytestcase(yyruleno==208); -{yymsp[-1].minor.yy182 = yymsp[0].minor.yy182;} + case 126: /* on_using ::= ON expr */ +{yymsp[-1].minor.yy561.pOn = yymsp[0].minor.yy528; yymsp[-1].minor.yy561.pUsing = 0;} break; - case 120: /* on_opt ::= */ - case 135: /* having_opt ::= */ yytestcase(yyruleno==135); - case 137: /* limit_opt ::= */ yytestcase(yyruleno==137); - case 142: /* where_opt ::= */ yytestcase(yyruleno==142); - case 209: /* case_else ::= */ yytestcase(yyruleno==209); - case 211: /* case_operand ::= */ yytestcase(yyruleno==211); -{yymsp[1].minor.yy182 = 0;} + case 127: /* on_using ::= USING LP idlist RP */ +{yymsp[-3].minor.yy561.pOn = 0; yymsp[-3].minor.yy561.pUsing = yymsp[-1].minor.yy254;} break; - case 122: /* indexed_opt ::= INDEXED BY nm */ + case 128: /* on_using ::= */ +{yymsp[1].minor.yy561.pOn = 0; yymsp[1].minor.yy561.pUsing = 0;} + break; + case 130: /* indexed_by ::= INDEXED BY nm */ {yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;} break; - case 123: /* indexed_opt ::= NOT INDEXED */ + case 131: /* indexed_by ::= NOT INDEXED */ {yymsp[-1].minor.yy0.z=0; yymsp[-1].minor.yy0.n=1;} break; - case 124: /* using_opt ::= USING LP idlist RP */ -{yymsp[-3].minor.yy510 = yymsp[-1].minor.yy510;} + case 133: /* orderby_opt ::= ORDER BY sortlist */ + case 143: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==143); +{yymsp[-2].minor.yy322 = yymsp[0].minor.yy322;} break; - case 125: /* using_opt ::= */ - case 157: /* idlist_opt ::= */ yytestcase(yyruleno==157); -{yymsp[1].minor.yy510 = 0;} - break; - case 127: /* orderby_opt ::= ORDER BY sortlist */ - case 134: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==134); -{yymsp[-2].minor.yy232 = yymsp[0].minor.yy232;} - break; - case 128: /* sortlist ::= sortlist COMMA expr sortorder */ + case 134: /* sortlist ::= sortlist COMMA expr sortorder nulls */ { - yymsp[-3].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy232,yymsp[-1].minor.yy182); - sqlite3ExprListSetSortOrder(yymsp[-3].minor.yy232,yymsp[0].minor.yy502); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy322,yymsp[-2].minor.yy528); + sqlite3ExprListSetSortOrder(yymsp[-4].minor.yy322,yymsp[-1].minor.yy394,yymsp[0].minor.yy394); } break; - case 129: /* sortlist ::= expr sortorder */ + case 135: /* sortlist ::= expr sortorder nulls */ { - yymsp[-1].minor.yy232 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy182); /*A-overwrites-Y*/ - sqlite3ExprListSetSortOrder(yymsp[-1].minor.yy232,yymsp[0].minor.yy502); + yymsp[-2].minor.yy322 = sqlite3ExprListAppend(pParse,0,yymsp[-2].minor.yy528); /*A-overwrites-Y*/ + sqlite3ExprListSetSortOrder(yymsp[-2].minor.yy322,yymsp[-1].minor.yy394,yymsp[0].minor.yy394); } break; - case 130: /* sortorder ::= ASC */ -{yymsp[0].minor.yy502 = SQLITE_SO_ASC;} + case 136: /* sortorder ::= ASC */ +{yymsp[0].minor.yy394 = SQLITE_SO_ASC;} break; - case 131: /* sortorder ::= DESC */ -{yymsp[0].minor.yy502 = SQLITE_SO_DESC;} + case 137: /* sortorder ::= DESC */ +{yymsp[0].minor.yy394 = SQLITE_SO_DESC;} break; - case 132: /* sortorder ::= */ -{yymsp[1].minor.yy502 = SQLITE_SO_UNDEFINED;} + case 138: /* sortorder ::= */ + case 141: /* nulls ::= */ yytestcase(yyruleno==141); +{yymsp[1].minor.yy394 = SQLITE_SO_UNDEFINED;} break; - case 138: /* limit_opt ::= LIMIT expr */ -{yymsp[-1].minor.yy182 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy182,0);} + case 139: /* nulls ::= NULLS FIRST */ +{yymsp[-1].minor.yy394 = SQLITE_SO_ASC;} break; - case 139: /* limit_opt ::= LIMIT expr OFFSET expr */ -{yymsp[-3].minor.yy182 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[-2].minor.yy182,yymsp[0].minor.yy182);} + case 140: /* nulls ::= NULLS LAST */ +{yymsp[-1].minor.yy394 = SQLITE_SO_DESC;} break; - case 140: /* limit_opt ::= LIMIT expr COMMA expr */ -{yymsp[-3].minor.yy182 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy182,yymsp[-2].minor.yy182);} + case 144: /* having_opt ::= */ + case 146: /* limit_opt ::= */ yytestcase(yyruleno==146); + case 151: /* where_opt ::= */ yytestcase(yyruleno==151); + case 153: /* where_opt_ret ::= */ yytestcase(yyruleno==153); + case 228: /* case_else ::= */ yytestcase(yyruleno==228); + case 229: /* case_operand ::= */ yytestcase(yyruleno==229); + case 248: /* vinto ::= */ yytestcase(yyruleno==248); +{yymsp[1].minor.yy528 = 0;} break; - case 141: /* cmd ::= with DELETE FROM xfullname indexed_opt where_opt */ + case 145: /* having_opt ::= HAVING expr */ + case 152: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==152); + case 154: /* where_opt_ret ::= WHERE expr */ yytestcase(yyruleno==154); + case 227: /* case_else ::= ELSE expr */ yytestcase(yyruleno==227); + case 247: /* vinto ::= INTO expr */ yytestcase(yyruleno==247); +{yymsp[-1].minor.yy528 = yymsp[0].minor.yy528;} + break; + case 147: /* limit_opt ::= LIMIT expr */ +{yymsp[-1].minor.yy528 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy528,0);} + break; + case 148: /* limit_opt ::= LIMIT expr OFFSET expr */ +{yymsp[-3].minor.yy528 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[-2].minor.yy528,yymsp[0].minor.yy528);} + break; + case 149: /* limit_opt ::= LIMIT expr COMMA expr */ +{yymsp[-3].minor.yy528 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy528,yymsp[-2].minor.yy528);} + break; + case 150: /* cmd ::= with DELETE FROM xfullname indexed_opt where_opt_ret */ { - sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy427, &yymsp[-1].minor.yy0); - sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy427,yymsp[0].minor.yy182,0,0); + sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy131, &yymsp[-1].minor.yy0); + sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy131,yymsp[0].minor.yy528,0,0); } break; - case 144: /* cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */ + case 155: /* where_opt_ret ::= RETURNING selcollist */ +{sqlite3AddReturning(pParse,yymsp[0].minor.yy322); yymsp[-1].minor.yy528 = 0;} + break; + case 156: /* where_opt_ret ::= WHERE expr RETURNING selcollist */ +{sqlite3AddReturning(pParse,yymsp[0].minor.yy322); yymsp[-3].minor.yy528 = yymsp[-2].minor.yy528;} + break; + case 157: /* cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt_ret */ { - sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy427, &yymsp[-3].minor.yy0); - sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy232,"set list"); - sqlite3Update(pParse,yymsp[-4].minor.yy427,yymsp[-1].minor.yy232,yymsp[0].minor.yy182,yymsp[-5].minor.yy502,0,0,0); + sqlite3SrcListIndexedBy(pParse, yymsp[-5].minor.yy131, &yymsp[-4].minor.yy0); + sqlite3ExprListCheckLength(pParse,yymsp[-2].minor.yy322,"set list"); + if( yymsp[-1].minor.yy131 ){ + SrcList *pFromClause = yymsp[-1].minor.yy131; + if( pFromClause->nSrc>1 ){ + Select *pSubquery; + Token as; + pSubquery = sqlite3SelectNew(pParse,0,pFromClause,0,0,0,0,SF_NestedFrom,0); + as.n = 0; + as.z = 0; + pFromClause = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&as,pSubquery,0); + } + yymsp[-5].minor.yy131 = sqlite3SrcListAppendList(pParse, yymsp[-5].minor.yy131, pFromClause); + } + sqlite3Update(pParse,yymsp[-5].minor.yy131,yymsp[-2].minor.yy322,yymsp[0].minor.yy528,yymsp[-6].minor.yy394,0,0,0); } break; - case 145: /* setlist ::= setlist COMMA nm EQ expr */ + case 158: /* setlist ::= setlist COMMA nm EQ expr */ { - yymsp[-4].minor.yy232 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy232, yymsp[0].minor.yy182); - sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy232, &yymsp[-2].minor.yy0, 1); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy322, yymsp[0].minor.yy528); + sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy322, &yymsp[-2].minor.yy0, 1); } break; - case 146: /* setlist ::= setlist COMMA LP idlist RP EQ expr */ + case 159: /* setlist ::= setlist COMMA LP idlist RP EQ expr */ { - yymsp[-6].minor.yy232 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy232, yymsp[-3].minor.yy510, yymsp[0].minor.yy182); + yymsp[-6].minor.yy322 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy322, yymsp[-3].minor.yy254, yymsp[0].minor.yy528); } break; - case 147: /* setlist ::= nm EQ expr */ + case 160: /* setlist ::= nm EQ expr */ { - yylhsminor.yy232 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy182); - sqlite3ExprListSetName(pParse, yylhsminor.yy232, &yymsp[-2].minor.yy0, 1); + yylhsminor.yy322 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy528); + sqlite3ExprListSetName(pParse, yylhsminor.yy322, &yymsp[-2].minor.yy0, 1); } - yymsp[-2].minor.yy232 = yylhsminor.yy232; + yymsp[-2].minor.yy322 = yylhsminor.yy322; break; - case 148: /* setlist ::= LP idlist RP EQ expr */ + case 161: /* setlist ::= LP idlist RP EQ expr */ { - yymsp[-4].minor.yy232 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy510, yymsp[0].minor.yy182); + yymsp[-4].minor.yy322 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy254, yymsp[0].minor.yy528); } break; - case 149: /* cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */ + case 162: /* cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */ { - sqlite3Insert(pParse, yymsp[-3].minor.yy427, yymsp[-1].minor.yy399, yymsp[-2].minor.yy510, yymsp[-5].minor.yy502, yymsp[0].minor.yy198); + sqlite3Insert(pParse, yymsp[-3].minor.yy131, yymsp[-1].minor.yy47, yymsp[-2].minor.yy254, yymsp[-5].minor.yy394, yymsp[0].minor.yy444); } break; - case 150: /* cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */ + case 163: /* cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES returning */ { - sqlite3Insert(pParse, yymsp[-3].minor.yy427, 0, yymsp[-2].minor.yy510, yymsp[-5].minor.yy502, 0); + sqlite3Insert(pParse, yymsp[-4].minor.yy131, 0, yymsp[-3].minor.yy254, yymsp[-6].minor.yy394, 0); } break; - case 151: /* upsert ::= */ -{ yymsp[1].minor.yy198 = 0; } + case 164: /* upsert ::= */ +{ yymsp[1].minor.yy444 = 0; } break; - case 152: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */ -{ yymsp[-10].minor.yy198 = sqlite3UpsertNew(pParse->db,yymsp[-7].minor.yy232,yymsp[-5].minor.yy182,yymsp[-1].minor.yy232,yymsp[0].minor.yy182);} + case 165: /* upsert ::= RETURNING selcollist */ +{ yymsp[-1].minor.yy444 = 0; sqlite3AddReturning(pParse,yymsp[0].minor.yy322); } break; - case 153: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */ -{ yymsp[-7].minor.yy198 = sqlite3UpsertNew(pParse->db,yymsp[-4].minor.yy232,yymsp[-2].minor.yy182,0,0); } + case 166: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt upsert */ +{ yymsp[-11].minor.yy444 = sqlite3UpsertNew(pParse->db,yymsp[-8].minor.yy322,yymsp[-6].minor.yy528,yymsp[-2].minor.yy322,yymsp[-1].minor.yy528,yymsp[0].minor.yy444);} break; - case 154: /* upsert ::= ON CONFLICT DO NOTHING */ -{ yymsp[-3].minor.yy198 = sqlite3UpsertNew(pParse->db,0,0,0,0); } + case 167: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING upsert */ +{ yymsp[-8].minor.yy444 = sqlite3UpsertNew(pParse->db,yymsp[-5].minor.yy322,yymsp[-3].minor.yy528,0,0,yymsp[0].minor.yy444); } break; - case 158: /* idlist_opt ::= LP idlist RP */ -{yymsp[-2].minor.yy510 = yymsp[-1].minor.yy510;} + case 168: /* upsert ::= ON CONFLICT DO NOTHING returning */ +{ yymsp[-4].minor.yy444 = sqlite3UpsertNew(pParse->db,0,0,0,0,0); } break; - case 159: /* idlist ::= idlist COMMA nm */ -{yymsp[-2].minor.yy510 = sqlite3IdListAppend(pParse->db,yymsp[-2].minor.yy510,&yymsp[0].minor.yy0);} + case 169: /* upsert ::= ON CONFLICT DO UPDATE SET setlist where_opt returning */ +{ yymsp[-7].minor.yy444 = sqlite3UpsertNew(pParse->db,0,0,yymsp[-2].minor.yy322,yymsp[-1].minor.yy528,0);} break; - case 160: /* idlist ::= nm */ -{yymsp[0].minor.yy510 = sqlite3IdListAppend(pParse->db,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/} + case 170: /* returning ::= RETURNING selcollist */ +{sqlite3AddReturning(pParse,yymsp[0].minor.yy322);} break; - case 161: /* expr ::= LP expr RP */ -{yymsp[-2].minor.yy182 = yymsp[-1].minor.yy182;} + case 173: /* idlist_opt ::= */ +{yymsp[1].minor.yy254 = 0;} break; - case 162: /* expr ::= ID|INDEXED */ - case 163: /* expr ::= JOIN_KW */ yytestcase(yyruleno==163); -{yymsp[0].minor.yy182=tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/} + case 174: /* idlist_opt ::= LP idlist RP */ +{yymsp[-2].minor.yy254 = yymsp[-1].minor.yy254;} break; - case 164: /* expr ::= nm DOT nm */ + case 175: /* idlist ::= idlist COMMA nm */ +{yymsp[-2].minor.yy254 = sqlite3IdListAppend(pParse,yymsp[-2].minor.yy254,&yymsp[0].minor.yy0);} + break; + case 176: /* idlist ::= nm */ +{yymsp[0].minor.yy254 = sqlite3IdListAppend(pParse,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/} + break; + case 177: /* expr ::= LP expr RP */ +{yymsp[-2].minor.yy528 = yymsp[-1].minor.yy528;} + break; + case 178: /* expr ::= ID|INDEXED|JOIN_KW */ +{yymsp[0].minor.yy528=tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/} + break; + case 179: /* expr ::= nm DOT nm */ { - Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); - Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1); - yylhsminor.yy182 = sqlite3PExpr(pParse, TK_DOT, temp1, temp2); + Expr *temp1 = tokenExpr(pParse,TK_ID,yymsp[-2].minor.yy0); + Expr *temp2 = tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); + yylhsminor.yy528 = sqlite3PExpr(pParse, TK_DOT, temp1, temp2); } - yymsp[-2].minor.yy182 = yylhsminor.yy182; + yymsp[-2].minor.yy528 = yylhsminor.yy528; break; - case 165: /* expr ::= nm DOT nm DOT nm */ + case 180: /* expr ::= nm DOT nm DOT nm */ { - Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-4].minor.yy0, 1); - Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); - Expr *temp3 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1); + Expr *temp1 = tokenExpr(pParse,TK_ID,yymsp[-4].minor.yy0); + Expr *temp2 = tokenExpr(pParse,TK_ID,yymsp[-2].minor.yy0); + Expr *temp3 = tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3); - yylhsminor.yy182 = sqlite3PExpr(pParse, TK_DOT, temp1, temp4); + if( IN_RENAME_OBJECT ){ + sqlite3RenameTokenRemap(pParse, 0, temp1); + } + yylhsminor.yy528 = sqlite3PExpr(pParse, TK_DOT, temp1, temp4); } - yymsp[-4].minor.yy182 = yylhsminor.yy182; + yymsp[-4].minor.yy528 = yylhsminor.yy528; break; - case 166: /* term ::= NULL|FLOAT|BLOB */ - case 167: /* term ::= STRING */ yytestcase(yyruleno==167); -{yymsp[0].minor.yy182=tokenExpr(pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/} + case 181: /* term ::= NULL|FLOAT|BLOB */ + case 182: /* term ::= STRING */ yytestcase(yyruleno==182); +{yymsp[0].minor.yy528=tokenExpr(pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/} break; - case 168: /* term ::= INTEGER */ + case 183: /* term ::= INTEGER */ { - yylhsminor.yy182 = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1); + yylhsminor.yy528 = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1); + if( yylhsminor.yy528 ) yylhsminor.yy528->w.iOfst = (int)(yymsp[0].minor.yy0.z - pParse->zTail); } - yymsp[0].minor.yy182 = yylhsminor.yy182; + yymsp[0].minor.yy528 = yylhsminor.yy528; break; - case 169: /* expr ::= VARIABLE */ + case 184: /* expr ::= VARIABLE */ { if( !(yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1])) ){ u32 n = yymsp[0].minor.yy0.n; - yymsp[0].minor.yy182 = tokenExpr(pParse, TK_VARIABLE, yymsp[0].minor.yy0); - sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy182, n); + yymsp[0].minor.yy528 = tokenExpr(pParse, TK_VARIABLE, yymsp[0].minor.yy0); + sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy528, n); }else{ /* When doing a nested parse, one can include terms in an expression ** that look like this: #1 #2 ... These terms refer to registers @@ -144622,146 +173562,179 @@ static YYACTIONTYPE yy_reduce( assert( t.n>=2 ); if( pParse->nested==0 ){ sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &t); - yymsp[0].minor.yy182 = 0; + yymsp[0].minor.yy528 = 0; }else{ - yymsp[0].minor.yy182 = sqlite3PExpr(pParse, TK_REGISTER, 0, 0); - if( yymsp[0].minor.yy182 ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy182->iTable); + yymsp[0].minor.yy528 = sqlite3PExpr(pParse, TK_REGISTER, 0, 0); + if( yymsp[0].minor.yy528 ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy528->iTable); } } } break; - case 170: /* expr ::= expr COLLATE ID|STRING */ + case 185: /* expr ::= expr COLLATE ID|STRING */ { - yymsp[-2].minor.yy182 = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy182, &yymsp[0].minor.yy0, 1); + yymsp[-2].minor.yy528 = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy528, &yymsp[0].minor.yy0, 1); } break; - case 171: /* expr ::= CAST LP expr AS typetoken RP */ + case 186: /* expr ::= CAST LP expr AS typetoken RP */ { - yymsp[-5].minor.yy182 = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1); - sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy182, yymsp[-3].minor.yy182, 0); + yymsp[-5].minor.yy528 = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1); + sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy528, yymsp[-3].minor.yy528, 0); } break; - case 172: /* expr ::= ID|INDEXED LP distinct exprlist RP */ + case 187: /* expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP */ { - if( yymsp[-1].minor.yy232 && yymsp[-1].minor.yy232->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){ - sqlite3ErrorMsg(pParse, "too many arguments on function %T", &yymsp[-4].minor.yy0); - } - yylhsminor.yy182 = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy232, &yymsp[-4].minor.yy0); - if( yymsp[-2].minor.yy502==SF_Distinct && yylhsminor.yy182 ){ - yylhsminor.yy182->flags |= EP_Distinct; - } + yylhsminor.yy528 = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy322, &yymsp[-4].minor.yy0, yymsp[-2].minor.yy394); } - yymsp[-4].minor.yy182 = yylhsminor.yy182; + yymsp[-4].minor.yy528 = yylhsminor.yy528; break; - case 173: /* expr ::= ID|INDEXED LP STAR RP */ + case 188: /* expr ::= ID|INDEXED|JOIN_KW LP STAR RP */ { - yylhsminor.yy182 = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0); + yylhsminor.yy528 = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0, 0); } - yymsp[-3].minor.yy182 = yylhsminor.yy182; + yymsp[-3].minor.yy528 = yylhsminor.yy528; break; - case 174: /* term ::= CTIME_KW */ + case 189: /* expr ::= ID|INDEXED|JOIN_KW LP distinct exprlist RP filter_over */ { - yylhsminor.yy182 = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0); + yylhsminor.yy528 = sqlite3ExprFunction(pParse, yymsp[-2].minor.yy322, &yymsp[-5].minor.yy0, yymsp[-3].minor.yy394); + sqlite3WindowAttach(pParse, yylhsminor.yy528, yymsp[0].minor.yy41); } - yymsp[0].minor.yy182 = yylhsminor.yy182; + yymsp[-5].minor.yy528 = yylhsminor.yy528; break; - case 175: /* expr ::= LP nexprlist COMMA expr RP */ + case 190: /* expr ::= ID|INDEXED|JOIN_KW LP STAR RP filter_over */ { - ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy232, yymsp[-1].minor.yy182); - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_VECTOR, 0, 0); - if( yymsp[-4].minor.yy182 ){ - yymsp[-4].minor.yy182->x.pList = pList; + yylhsminor.yy528 = sqlite3ExprFunction(pParse, 0, &yymsp[-4].minor.yy0, 0); + sqlite3WindowAttach(pParse, yylhsminor.yy528, yymsp[0].minor.yy41); +} + yymsp[-4].minor.yy528 = yylhsminor.yy528; + break; + case 191: /* term ::= CTIME_KW */ +{ + yylhsminor.yy528 = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0, 0); +} + yymsp[0].minor.yy528 = yylhsminor.yy528; + break; + case 192: /* expr ::= LP nexprlist COMMA expr RP */ +{ + ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy322, yymsp[-1].minor.yy528); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_VECTOR, 0, 0); + if( yymsp[-4].minor.yy528 ){ + yymsp[-4].minor.yy528->x.pList = pList; + if( ALWAYS(pList->nExpr) ){ + yymsp[-4].minor.yy528->flags |= pList->a[0].pExpr->flags & EP_Propagate; + } }else{ sqlite3ExprListDelete(pParse->db, pList); } } break; - case 176: /* expr ::= expr AND expr */ - case 177: /* expr ::= expr OR expr */ yytestcase(yyruleno==177); - case 178: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==178); - case 179: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==179); - case 180: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==180); - case 181: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==181); - case 182: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==182); - case 183: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==183); -{yymsp[-2].minor.yy182=sqlite3PExpr(pParse,yymsp[-1].major,yymsp[-2].minor.yy182,yymsp[0].minor.yy182);} + case 193: /* expr ::= expr AND expr */ +{yymsp[-2].minor.yy528=sqlite3ExprAnd(pParse,yymsp[-2].minor.yy528,yymsp[0].minor.yy528);} break; - case 184: /* likeop ::= NOT LIKE_KW|MATCH */ + case 194: /* expr ::= expr OR expr */ + case 195: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==195); + case 196: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==196); + case 197: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==197); + case 198: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==198); + case 199: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==199); + case 200: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==200); +{yymsp[-2].minor.yy528=sqlite3PExpr(pParse,yymsp[-1].major,yymsp[-2].minor.yy528,yymsp[0].minor.yy528);} + break; + case 201: /* likeop ::= NOT LIKE_KW|MATCH */ {yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.n|=0x80000000; /*yymsp[-1].minor.yy0-overwrite-yymsp[0].minor.yy0*/} break; - case 185: /* expr ::= expr likeop expr */ + case 202: /* expr ::= expr likeop expr */ { ExprList *pList; int bNot = yymsp[-1].minor.yy0.n & 0x80000000; yymsp[-1].minor.yy0.n &= 0x7fffffff; - pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy182); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy182); - yymsp[-2].minor.yy182 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0); - if( bNot ) yymsp[-2].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-2].minor.yy182, 0); - if( yymsp[-2].minor.yy182 ) yymsp[-2].minor.yy182->flags |= EP_InfixFunc; + pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy528); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy528); + yymsp[-2].minor.yy528 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0, 0); + if( bNot ) yymsp[-2].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-2].minor.yy528, 0); + if( yymsp[-2].minor.yy528 ) yymsp[-2].minor.yy528->flags |= EP_InfixFunc; } break; - case 186: /* expr ::= expr likeop expr ESCAPE expr */ + case 203: /* expr ::= expr likeop expr ESCAPE expr */ { ExprList *pList; int bNot = yymsp[-3].minor.yy0.n & 0x80000000; yymsp[-3].minor.yy0.n &= 0x7fffffff; - pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy182); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy182); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy182); - yymsp[-4].minor.yy182 = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0); - if( bNot ) yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy182, 0); - if( yymsp[-4].minor.yy182 ) yymsp[-4].minor.yy182->flags |= EP_InfixFunc; + pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy528); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy528); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy528); + yymsp[-4].minor.yy528 = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0, 0); + if( bNot ) yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy528, 0); + if( yymsp[-4].minor.yy528 ) yymsp[-4].minor.yy528->flags |= EP_InfixFunc; } break; - case 187: /* expr ::= expr ISNULL|NOTNULL */ -{yymsp[-1].minor.yy182 = sqlite3PExpr(pParse,yymsp[0].major,yymsp[-1].minor.yy182,0);} + case 204: /* expr ::= expr ISNULL|NOTNULL */ +{yymsp[-1].minor.yy528 = sqlite3PExpr(pParse,yymsp[0].major,yymsp[-1].minor.yy528,0);} break; - case 188: /* expr ::= expr NOT NULL */ -{yymsp[-2].minor.yy182 = sqlite3PExpr(pParse,TK_NOTNULL,yymsp[-2].minor.yy182,0);} + case 205: /* expr ::= expr NOT NULL */ +{yymsp[-2].minor.yy528 = sqlite3PExpr(pParse,TK_NOTNULL,yymsp[-2].minor.yy528,0);} break; - case 189: /* expr ::= expr IS expr */ + case 206: /* expr ::= expr IS expr */ { - yymsp[-2].minor.yy182 = sqlite3PExpr(pParse,TK_IS,yymsp[-2].minor.yy182,yymsp[0].minor.yy182); - binaryToUnaryIfNull(pParse, yymsp[0].minor.yy182, yymsp[-2].minor.yy182, TK_ISNULL); + yymsp[-2].minor.yy528 = sqlite3PExpr(pParse,TK_IS,yymsp[-2].minor.yy528,yymsp[0].minor.yy528); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy528, yymsp[-2].minor.yy528, TK_ISNULL); } break; - case 190: /* expr ::= expr IS NOT expr */ + case 207: /* expr ::= expr IS NOT expr */ { - yymsp[-3].minor.yy182 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-3].minor.yy182,yymsp[0].minor.yy182); - binaryToUnaryIfNull(pParse, yymsp[0].minor.yy182, yymsp[-3].minor.yy182, TK_NOTNULL); + yymsp[-3].minor.yy528 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-3].minor.yy528,yymsp[0].minor.yy528); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy528, yymsp[-3].minor.yy528, TK_NOTNULL); } break; - case 191: /* expr ::= NOT expr */ - case 192: /* expr ::= BITNOT expr */ yytestcase(yyruleno==192); -{yymsp[-1].minor.yy182 = sqlite3PExpr(pParse, yymsp[-1].major, yymsp[0].minor.yy182, 0);/*A-overwrites-B*/} - break; - case 193: /* expr ::= MINUS expr */ -{yymsp[-1].minor.yy182 = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy182, 0);} - break; - case 194: /* expr ::= PLUS expr */ -{yymsp[-1].minor.yy182 = sqlite3PExpr(pParse, TK_UPLUS, yymsp[0].minor.yy182, 0);} - break; - case 195: /* between_op ::= BETWEEN */ - case 198: /* in_op ::= IN */ yytestcase(yyruleno==198); -{yymsp[0].minor.yy502 = 0;} - break; - case 197: /* expr ::= expr between_op expr AND expr */ + case 208: /* expr ::= expr IS NOT DISTINCT FROM expr */ { - ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy182); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy182); - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy182, 0); - if( yymsp[-4].minor.yy182 ){ - yymsp[-4].minor.yy182->x.pList = pList; + yymsp[-5].minor.yy528 = sqlite3PExpr(pParse,TK_IS,yymsp[-5].minor.yy528,yymsp[0].minor.yy528); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy528, yymsp[-5].minor.yy528, TK_ISNULL); +} + break; + case 209: /* expr ::= expr IS DISTINCT FROM expr */ +{ + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-4].minor.yy528,yymsp[0].minor.yy528); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy528, yymsp[-4].minor.yy528, TK_NOTNULL); +} + break; + case 210: /* expr ::= NOT expr */ + case 211: /* expr ::= BITNOT expr */ yytestcase(yyruleno==211); +{yymsp[-1].minor.yy528 = sqlite3PExpr(pParse, yymsp[-1].major, yymsp[0].minor.yy528, 0);/*A-overwrites-B*/} + break; + case 212: /* expr ::= PLUS|MINUS expr */ +{ + yymsp[-1].minor.yy528 = sqlite3PExpr(pParse, yymsp[-1].major==TK_PLUS ? TK_UPLUS : TK_UMINUS, yymsp[0].minor.yy528, 0); + /*A-overwrites-B*/ +} + break; + case 213: /* expr ::= expr PTR expr */ +{ + ExprList *pList = sqlite3ExprListAppend(pParse, 0, yymsp[-2].minor.yy528); + pList = sqlite3ExprListAppend(pParse, pList, yymsp[0].minor.yy528); + yylhsminor.yy528 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0, 0); +} + yymsp[-2].minor.yy528 = yylhsminor.yy528; + break; + case 214: /* between_op ::= BETWEEN */ + case 217: /* in_op ::= IN */ yytestcase(yyruleno==217); +{yymsp[0].minor.yy394 = 0;} + break; + case 216: /* expr ::= expr between_op expr AND expr */ +{ + ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy528); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy528); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy528, 0); + if( yymsp[-4].minor.yy528 ){ + yymsp[-4].minor.yy528->x.pList = pList; }else{ sqlite3ExprListDelete(pParse->db, pList); - } - if( yymsp[-3].minor.yy502 ) yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy182, 0); + } + if( yymsp[-3].minor.yy394 ) yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy528, 0); } break; - case 200: /* expr ::= expr in_op LP exprlist RP */ + case 219: /* expr ::= expr in_op LP exprlist RP */ { - if( yymsp[-1].minor.yy232==0 ){ + if( yymsp[-1].minor.yy322==0 ){ /* Expressions of the form ** ** expr1 IN () @@ -144770,417 +173743,582 @@ static YYACTIONTYPE yy_reduce( ** simplify to constants 0 (false) and 1 (true), respectively, ** regardless of the value of expr1. */ - sqlite3ExprDelete(pParse->db, yymsp[-4].minor.yy182); - yymsp[-4].minor.yy182 = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[yymsp[-3].minor.yy502],1); - }else if( yymsp[-1].minor.yy232->nExpr==1 ){ - /* Expressions of the form: - ** - ** expr1 IN (?1) - ** expr1 NOT IN (?2) - ** - ** with exactly one value on the RHS can be simplified to something - ** like this: - ** - ** expr1 == ?1 - ** expr1 <> ?2 - ** - ** But, the RHS of the == or <> is marked with the EP_Generic flag - ** so that it may not contribute to the computation of comparison - ** affinity or the collating sequence to use for comparison. Otherwise, - ** the semantics would be subtly different from IN or NOT IN. - */ - Expr *pRHS = yymsp[-1].minor.yy232->a[0].pExpr; - yymsp[-1].minor.yy232->a[0].pExpr = 0; - sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy232); - /* pRHS cannot be NULL because a malloc error would have been detected - ** before now and control would have never reached this point */ - if( ALWAYS(pRHS) ){ - pRHS->flags &= ~EP_Collate; - pRHS->flags |= EP_Generic; - } - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, yymsp[-3].minor.yy502 ? TK_NE : TK_EQ, yymsp[-4].minor.yy182, pRHS); + sqlite3ExprUnmapAndDelete(pParse, yymsp[-4].minor.yy528); + yymsp[-4].minor.yy528 = sqlite3Expr(pParse->db, TK_STRING, yymsp[-3].minor.yy394 ? "true" : "false"); + if( yymsp[-4].minor.yy528 ) sqlite3ExprIdToTrueFalse(yymsp[-4].minor.yy528); }else{ - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy182, 0); - if( yymsp[-4].minor.yy182 ){ - yymsp[-4].minor.yy182->x.pList = yymsp[-1].minor.yy232; - sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy182); + Expr *pRHS = yymsp[-1].minor.yy322->a[0].pExpr; + if( yymsp[-1].minor.yy322->nExpr==1 && sqlite3ExprIsConstant(pRHS) && yymsp[-4].minor.yy528->op!=TK_VECTOR ){ + yymsp[-1].minor.yy322->a[0].pExpr = 0; + sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy322); + pRHS = sqlite3PExpr(pParse, TK_UPLUS, pRHS, 0); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_EQ, yymsp[-4].minor.yy528, pRHS); + }else if( yymsp[-1].minor.yy322->nExpr==1 && pRHS->op==TK_SELECT ){ + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy528, 0); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy528, pRHS->x.pSelect); + pRHS->x.pSelect = 0; + sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy322); }else{ - sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy232); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy528, 0); + if( yymsp[-4].minor.yy528==0 ){ + sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy322); + }else if( yymsp[-4].minor.yy528->pLeft->op==TK_VECTOR ){ + int nExpr = yymsp[-4].minor.yy528->pLeft->x.pList->nExpr; + Select *pSelectRHS = sqlite3ExprListToValues(pParse, nExpr, yymsp[-1].minor.yy322); + if( pSelectRHS ){ + parserDoubleLinkSelect(pParse, pSelectRHS); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy528, pSelectRHS); + } + }else{ + yymsp[-4].minor.yy528->x.pList = yymsp[-1].minor.yy322; + sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy528); + } } - if( yymsp[-3].minor.yy502 ) yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy182, 0); + if( yymsp[-3].minor.yy394 ) yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy528, 0); } } break; - case 201: /* expr ::= LP select RP */ + case 220: /* expr ::= LP select RP */ { - yymsp[-2].minor.yy182 = sqlite3PExpr(pParse, TK_SELECT, 0, 0); - sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy182, yymsp[-1].minor.yy399); + yymsp[-2].minor.yy528 = sqlite3PExpr(pParse, TK_SELECT, 0, 0); + sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy528, yymsp[-1].minor.yy47); } break; - case 202: /* expr ::= expr in_op LP select RP */ + case 221: /* expr ::= expr in_op LP select RP */ { - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy182, 0); - sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy182, yymsp[-1].minor.yy399); - if( yymsp[-3].minor.yy502 ) yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy182, 0); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy528, 0); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy528, yymsp[-1].minor.yy47); + if( yymsp[-3].minor.yy394 ) yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy528, 0); } break; - case 203: /* expr ::= expr in_op nm dbnm paren_exprlist */ + case 222: /* expr ::= expr in_op nm dbnm paren_exprlist */ { - SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0); + SrcList *pSrc = sqlite3SrcListAppend(pParse, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0); Select *pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0); - if( yymsp[0].minor.yy232 ) sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy232); - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy182, 0); - sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy182, pSelect); - if( yymsp[-3].minor.yy502 ) yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy182, 0); + if( yymsp[0].minor.yy322 ) sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy322); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy528, 0); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy528, pSelect); + if( yymsp[-3].minor.yy394 ) yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy528, 0); } break; - case 204: /* expr ::= EXISTS LP select RP */ + case 223: /* expr ::= EXISTS LP select RP */ { Expr *p; - p = yymsp[-3].minor.yy182 = sqlite3PExpr(pParse, TK_EXISTS, 0, 0); - sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy399); + p = yymsp[-3].minor.yy528 = sqlite3PExpr(pParse, TK_EXISTS, 0, 0); + sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy47); } break; - case 205: /* expr ::= CASE case_operand case_exprlist case_else END */ + case 224: /* expr ::= CASE case_operand case_exprlist case_else END */ { - yymsp[-4].minor.yy182 = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy182, 0); - if( yymsp[-4].minor.yy182 ){ - yymsp[-4].minor.yy182->x.pList = yymsp[-1].minor.yy182 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy232,yymsp[-1].minor.yy182) : yymsp[-2].minor.yy232; - sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy182); + yymsp[-4].minor.yy528 = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy528, 0); + if( yymsp[-4].minor.yy528 ){ + yymsp[-4].minor.yy528->x.pList = yymsp[-1].minor.yy528 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy322,yymsp[-1].minor.yy528) : yymsp[-2].minor.yy322; + sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy528); }else{ - sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy232); - sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy182); + sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy322); + sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy528); } } break; - case 206: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ + case 225: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ { - yymsp[-4].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy232, yymsp[-2].minor.yy182); - yymsp[-4].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy232, yymsp[0].minor.yy182); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy322, yymsp[-2].minor.yy528); + yymsp[-4].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy322, yymsp[0].minor.yy528); } break; - case 207: /* case_exprlist ::= WHEN expr THEN expr */ + case 226: /* case_exprlist ::= WHEN expr THEN expr */ { - yymsp[-3].minor.yy232 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy182); - yymsp[-3].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy232, yymsp[0].minor.yy182); + yymsp[-3].minor.yy322 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy528); + yymsp[-3].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy322, yymsp[0].minor.yy528); } break; - case 210: /* case_operand ::= expr */ -{yymsp[0].minor.yy182 = yymsp[0].minor.yy182; /*A-overwrites-X*/} + case 231: /* nexprlist ::= nexprlist COMMA expr */ +{yymsp[-2].minor.yy322 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy322,yymsp[0].minor.yy528);} break; - case 213: /* nexprlist ::= nexprlist COMMA expr */ -{yymsp[-2].minor.yy232 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy232,yymsp[0].minor.yy182);} + case 232: /* nexprlist ::= expr */ +{yymsp[0].minor.yy322 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy528); /*A-overwrites-Y*/} break; - case 214: /* nexprlist ::= expr */ -{yymsp[0].minor.yy232 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy182); /*A-overwrites-Y*/} + case 234: /* paren_exprlist ::= LP exprlist RP */ + case 239: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==239); +{yymsp[-2].minor.yy322 = yymsp[-1].minor.yy322;} break; - case 216: /* paren_exprlist ::= LP exprlist RP */ - case 221: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==221); -{yymsp[-2].minor.yy232 = yymsp[-1].minor.yy232;} - break; - case 217: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ + case 235: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ { - sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, - sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy232, yymsp[-10].minor.yy502, - &yymsp[-11].minor.yy0, yymsp[0].minor.yy182, SQLITE_SO_ASC, yymsp[-8].minor.yy502, SQLITE_IDXTYPE_APPDEF); + sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, + sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy322, yymsp[-10].minor.yy394, + &yymsp[-11].minor.yy0, yymsp[0].minor.yy528, SQLITE_SO_ASC, yymsp[-8].minor.yy394, SQLITE_IDXTYPE_APPDEF); + if( IN_RENAME_OBJECT && pParse->pNewIndex ){ + sqlite3RenameTokenMap(pParse, pParse->pNewIndex->zName, &yymsp[-4].minor.yy0); + } } break; - case 218: /* uniqueflag ::= UNIQUE */ - case 258: /* raisetype ::= ABORT */ yytestcase(yyruleno==258); -{yymsp[0].minor.yy502 = OE_Abort;} + case 236: /* uniqueflag ::= UNIQUE */ + case 278: /* raisetype ::= ABORT */ yytestcase(yyruleno==278); +{yymsp[0].minor.yy394 = OE_Abort;} break; - case 219: /* uniqueflag ::= */ -{yymsp[1].minor.yy502 = OE_None;} + case 237: /* uniqueflag ::= */ +{yymsp[1].minor.yy394 = OE_None;} break; - case 222: /* eidlist ::= eidlist COMMA nm collate sortorder */ + case 240: /* eidlist ::= eidlist COMMA nm collate sortorder */ { - yymsp[-4].minor.yy232 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy232, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy502, yymsp[0].minor.yy502); + yymsp[-4].minor.yy322 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy322, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy394, yymsp[0].minor.yy394); } break; - case 223: /* eidlist ::= nm collate sortorder */ + case 241: /* eidlist ::= nm collate sortorder */ { - yymsp[-2].minor.yy232 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy502, yymsp[0].minor.yy502); /*A-overwrites-Y*/ + yymsp[-2].minor.yy322 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy394, yymsp[0].minor.yy394); /*A-overwrites-Y*/ } break; - case 226: /* cmd ::= DROP INDEX ifexists fullname */ -{sqlite3DropIndex(pParse, yymsp[0].minor.yy427, yymsp[-1].minor.yy502);} + case 244: /* cmd ::= DROP INDEX ifexists fullname */ +{sqlite3DropIndex(pParse, yymsp[0].minor.yy131, yymsp[-1].minor.yy394);} break; - case 227: /* cmd ::= VACUUM */ -{sqlite3Vacuum(pParse,0);} + case 245: /* cmd ::= VACUUM vinto */ +{sqlite3Vacuum(pParse,0,yymsp[0].minor.yy528);} break; - case 228: /* cmd ::= VACUUM nm */ -{sqlite3Vacuum(pParse,&yymsp[0].minor.yy0);} + case 246: /* cmd ::= VACUUM nm vinto */ +{sqlite3Vacuum(pParse,&yymsp[-1].minor.yy0,yymsp[0].minor.yy528);} break; - case 229: /* cmd ::= PRAGMA nm dbnm */ + case 249: /* cmd ::= PRAGMA nm dbnm */ {sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);} break; - case 230: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ + case 250: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);} break; - case 231: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ + case 251: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);} break; - case 232: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ + case 252: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);} break; - case 233: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ + case 253: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);} break; - case 236: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ + case 256: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ { Token all; all.z = yymsp[-3].minor.yy0.z; all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n; - sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy47, &all); + sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy33, &all); } break; - case 237: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ + case 257: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ { - sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy502, yymsp[-4].minor.yy300.a, yymsp[-4].minor.yy300.b, yymsp[-2].minor.yy427, yymsp[0].minor.yy182, yymsp[-10].minor.yy502, yymsp[-8].minor.yy502); + sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy394, yymsp[-4].minor.yy180.a, yymsp[-4].minor.yy180.b, yymsp[-2].minor.yy131, yymsp[0].minor.yy528, yymsp[-10].minor.yy394, yymsp[-8].minor.yy394); yymsp[-10].minor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); /*A-overwrites-T*/ } break; - case 238: /* trigger_time ::= BEFORE|AFTER */ -{ yymsp[0].minor.yy502 = yymsp[0].major; /*A-overwrites-X*/ } + case 258: /* trigger_time ::= BEFORE|AFTER */ +{ yymsp[0].minor.yy394 = yymsp[0].major; /*A-overwrites-X*/ } break; - case 239: /* trigger_time ::= INSTEAD OF */ -{ yymsp[-1].minor.yy502 = TK_INSTEAD;} + case 259: /* trigger_time ::= INSTEAD OF */ +{ yymsp[-1].minor.yy394 = TK_INSTEAD;} break; - case 240: /* trigger_time ::= */ -{ yymsp[1].minor.yy502 = TK_BEFORE; } + case 260: /* trigger_time ::= */ +{ yymsp[1].minor.yy394 = TK_BEFORE; } break; - case 241: /* trigger_event ::= DELETE|INSERT */ - case 242: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==242); -{yymsp[0].minor.yy300.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy300.b = 0;} + case 261: /* trigger_event ::= DELETE|INSERT */ + case 262: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==262); +{yymsp[0].minor.yy180.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy180.b = 0;} break; - case 243: /* trigger_event ::= UPDATE OF idlist */ -{yymsp[-2].minor.yy300.a = TK_UPDATE; yymsp[-2].minor.yy300.b = yymsp[0].minor.yy510;} + case 263: /* trigger_event ::= UPDATE OF idlist */ +{yymsp[-2].minor.yy180.a = TK_UPDATE; yymsp[-2].minor.yy180.b = yymsp[0].minor.yy254;} break; - case 244: /* when_clause ::= */ - case 263: /* key_opt ::= */ yytestcase(yyruleno==263); -{ yymsp[1].minor.yy182 = 0; } + case 264: /* when_clause ::= */ + case 283: /* key_opt ::= */ yytestcase(yyruleno==283); +{ yymsp[1].minor.yy528 = 0; } break; - case 245: /* when_clause ::= WHEN expr */ - case 264: /* key_opt ::= KEY expr */ yytestcase(yyruleno==264); -{ yymsp[-1].minor.yy182 = yymsp[0].minor.yy182; } + case 265: /* when_clause ::= WHEN expr */ + case 284: /* key_opt ::= KEY expr */ yytestcase(yyruleno==284); +{ yymsp[-1].minor.yy528 = yymsp[0].minor.yy528; } break; - case 246: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ + case 266: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ { - assert( yymsp[-2].minor.yy47!=0 ); - yymsp[-2].minor.yy47->pLast->pNext = yymsp[-1].minor.yy47; - yymsp[-2].minor.yy47->pLast = yymsp[-1].minor.yy47; + assert( yymsp[-2].minor.yy33!=0 ); + yymsp[-2].minor.yy33->pLast->pNext = yymsp[-1].minor.yy33; + yymsp[-2].minor.yy33->pLast = yymsp[-1].minor.yy33; } break; - case 247: /* trigger_cmd_list ::= trigger_cmd SEMI */ -{ - assert( yymsp[-1].minor.yy47!=0 ); - yymsp[-1].minor.yy47->pLast = yymsp[-1].minor.yy47; + case 267: /* trigger_cmd_list ::= trigger_cmd SEMI */ +{ + assert( yymsp[-1].minor.yy33!=0 ); + yymsp[-1].minor.yy33->pLast = yymsp[-1].minor.yy33; } break; - case 248: /* trnm ::= nm DOT nm */ + case 268: /* trnm ::= nm DOT nm */ { yymsp[-2].minor.yy0 = yymsp[0].minor.yy0; - sqlite3ErrorMsg(pParse, + sqlite3ErrorMsg(pParse, "qualified table names are not allowed on INSERT, UPDATE, and DELETE " "statements within triggers"); } break; - case 249: /* tridxby ::= INDEXED BY nm */ + case 269: /* tridxby ::= INDEXED BY nm */ { sqlite3ErrorMsg(pParse, "the INDEXED BY clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 250: /* tridxby ::= NOT INDEXED */ + case 270: /* tridxby ::= NOT INDEXED */ { sqlite3ErrorMsg(pParse, "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 251: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */ -{yylhsminor.yy47 = sqlite3TriggerUpdateStep(pParse->db, &yymsp[-5].minor.yy0, yymsp[-2].minor.yy232, yymsp[-1].minor.yy182, yymsp[-6].minor.yy502, yymsp[-7].minor.yy0.z, yymsp[0].minor.yy36);} - yymsp[-7].minor.yy47 = yylhsminor.yy47; + case 271: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */ +{yylhsminor.yy33 = sqlite3TriggerUpdateStep(pParse, &yymsp[-6].minor.yy0, yymsp[-2].minor.yy131, yymsp[-3].minor.yy322, yymsp[-1].minor.yy528, yymsp[-7].minor.yy394, yymsp[-8].minor.yy0.z, yymsp[0].minor.yy522);} + yymsp[-8].minor.yy33 = yylhsminor.yy33; break; - case 252: /* trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */ + case 272: /* trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */ { - yylhsminor.yy47 = sqlite3TriggerInsertStep(pParse->db,&yymsp[-4].minor.yy0,yymsp[-3].minor.yy510,yymsp[-2].minor.yy399,yymsp[-6].minor.yy502,yymsp[-1].minor.yy198,yymsp[-7].minor.yy36,yymsp[0].minor.yy36);/*yylhsminor.yy47-overwrites-yymsp[-6].minor.yy502*/ + yylhsminor.yy33 = sqlite3TriggerInsertStep(pParse,&yymsp[-4].minor.yy0,yymsp[-3].minor.yy254,yymsp[-2].minor.yy47,yymsp[-6].minor.yy394,yymsp[-1].minor.yy444,yymsp[-7].minor.yy522,yymsp[0].minor.yy522);/*yylhsminor.yy33-overwrites-yymsp[-6].minor.yy394*/ } - yymsp[-7].minor.yy47 = yylhsminor.yy47; + yymsp[-7].minor.yy33 = yylhsminor.yy33; break; - case 253: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */ -{yylhsminor.yy47 = sqlite3TriggerDeleteStep(pParse->db, &yymsp[-3].minor.yy0, yymsp[-1].minor.yy182, yymsp[-5].minor.yy0.z, yymsp[0].minor.yy36);} - yymsp[-5].minor.yy47 = yylhsminor.yy47; + case 273: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */ +{yylhsminor.yy33 = sqlite3TriggerDeleteStep(pParse, &yymsp[-3].minor.yy0, yymsp[-1].minor.yy528, yymsp[-5].minor.yy0.z, yymsp[0].minor.yy522);} + yymsp[-5].minor.yy33 = yylhsminor.yy33; break; - case 254: /* trigger_cmd ::= scanpt select scanpt */ -{yylhsminor.yy47 = sqlite3TriggerSelectStep(pParse->db, yymsp[-1].minor.yy399, yymsp[-2].minor.yy36, yymsp[0].minor.yy36); /*yylhsminor.yy47-overwrites-yymsp[-1].minor.yy399*/} - yymsp[-2].minor.yy47 = yylhsminor.yy47; + case 274: /* trigger_cmd ::= scanpt select scanpt */ +{yylhsminor.yy33 = sqlite3TriggerSelectStep(pParse->db, yymsp[-1].minor.yy47, yymsp[-2].minor.yy522, yymsp[0].minor.yy522); /*yylhsminor.yy33-overwrites-yymsp[-1].minor.yy47*/} + yymsp[-2].minor.yy33 = yylhsminor.yy33; break; - case 255: /* expr ::= RAISE LP IGNORE RP */ + case 275: /* expr ::= RAISE LP IGNORE RP */ { - yymsp[-3].minor.yy182 = sqlite3PExpr(pParse, TK_RAISE, 0, 0); - if( yymsp[-3].minor.yy182 ){ - yymsp[-3].minor.yy182->affinity = OE_Ignore; + yymsp[-3].minor.yy528 = sqlite3PExpr(pParse, TK_RAISE, 0, 0); + if( yymsp[-3].minor.yy528 ){ + yymsp[-3].minor.yy528->affExpr = OE_Ignore; } } break; - case 256: /* expr ::= RAISE LP raisetype COMMA nm RP */ + case 276: /* expr ::= RAISE LP raisetype COMMA nm RP */ { - yymsp[-5].minor.yy182 = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1); - if( yymsp[-5].minor.yy182 ) { - yymsp[-5].minor.yy182->affinity = (char)yymsp[-3].minor.yy502; + yymsp[-5].minor.yy528 = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1); + if( yymsp[-5].minor.yy528 ) { + yymsp[-5].minor.yy528->affExpr = (char)yymsp[-3].minor.yy394; } } break; - case 257: /* raisetype ::= ROLLBACK */ -{yymsp[0].minor.yy502 = OE_Rollback;} + case 277: /* raisetype ::= ROLLBACK */ +{yymsp[0].minor.yy394 = OE_Rollback;} break; - case 259: /* raisetype ::= FAIL */ -{yymsp[0].minor.yy502 = OE_Fail;} + case 279: /* raisetype ::= FAIL */ +{yymsp[0].minor.yy394 = OE_Fail;} break; - case 260: /* cmd ::= DROP TRIGGER ifexists fullname */ + case 280: /* cmd ::= DROP TRIGGER ifexists fullname */ { - sqlite3DropTrigger(pParse,yymsp[0].minor.yy427,yymsp[-1].minor.yy502); + sqlite3DropTrigger(pParse,yymsp[0].minor.yy131,yymsp[-1].minor.yy394); } break; - case 261: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ + case 281: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ { - sqlite3Attach(pParse, yymsp[-3].minor.yy182, yymsp[-1].minor.yy182, yymsp[0].minor.yy182); + sqlite3Attach(pParse, yymsp[-3].minor.yy528, yymsp[-1].minor.yy528, yymsp[0].minor.yy528); } break; - case 262: /* cmd ::= DETACH database_kw_opt expr */ + case 282: /* cmd ::= DETACH database_kw_opt expr */ { - sqlite3Detach(pParse, yymsp[0].minor.yy182); + sqlite3Detach(pParse, yymsp[0].minor.yy528); } break; - case 265: /* cmd ::= REINDEX */ + case 285: /* cmd ::= REINDEX */ {sqlite3Reindex(pParse, 0, 0);} break; - case 266: /* cmd ::= REINDEX nm dbnm */ + case 286: /* cmd ::= REINDEX nm dbnm */ {sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 267: /* cmd ::= ANALYZE */ + case 287: /* cmd ::= ANALYZE */ {sqlite3Analyze(pParse, 0, 0);} break; - case 268: /* cmd ::= ANALYZE nm dbnm */ + case 288: /* cmd ::= ANALYZE nm dbnm */ {sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 269: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ + case 289: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ { - sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy427,&yymsp[0].minor.yy0); + sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy131,&yymsp[0].minor.yy0); } break; - case 270: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ + case 290: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ { yymsp[-1].minor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-1].minor.yy0.z) + pParse->sLastToken.n; sqlite3AlterFinishAddColumn(pParse, &yymsp[-1].minor.yy0); } break; - case 271: /* add_column_fullname ::= fullname */ + case 291: /* cmd ::= ALTER TABLE fullname DROP kwcolumn_opt nm */ +{ + sqlite3AlterDropColumn(pParse, yymsp[-3].minor.yy131, &yymsp[0].minor.yy0); +} + break; + case 292: /* add_column_fullname ::= fullname */ { disableLookaside(pParse); - sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy427); + sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy131); } break; - case 272: /* cmd ::= create_vtab */ + case 293: /* cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */ +{ + sqlite3AlterRenameColumn(pParse, yymsp[-5].minor.yy131, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0); +} + break; + case 294: /* cmd ::= create_vtab */ {sqlite3VtabFinishParse(pParse,0);} break; - case 273: /* cmd ::= create_vtab LP vtabarglist RP */ + case 295: /* cmd ::= create_vtab LP vtabarglist RP */ {sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);} break; - case 274: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ + case 296: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ { - sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy502); + sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy394); } break; - case 275: /* vtabarg ::= */ + case 297: /* vtabarg ::= */ {sqlite3VtabArgInit(pParse);} break; - case 276: /* vtabargtoken ::= ANY */ - case 277: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==277); - case 278: /* lp ::= LP */ yytestcase(yyruleno==278); + case 298: /* vtabargtoken ::= ANY */ + case 299: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==299); + case 300: /* lp ::= LP */ yytestcase(yyruleno==300); {sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);} break; - case 279: /* with ::= WITH wqlist */ - case 280: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==280); -{ sqlite3WithPush(pParse, yymsp[0].minor.yy91, 1); } + case 301: /* with ::= WITH wqlist */ + case 302: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==302); +{ sqlite3WithPush(pParse, yymsp[0].minor.yy521, 1); } break; - case 281: /* wqlist ::= nm eidlist_opt AS LP select RP */ + case 303: /* wqas ::= AS */ +{yymsp[0].minor.yy516 = M10d_Any;} + break; + case 304: /* wqas ::= AS MATERIALIZED */ +{yymsp[-1].minor.yy516 = M10d_Yes;} + break; + case 305: /* wqas ::= AS NOT MATERIALIZED */ +{yymsp[-2].minor.yy516 = M10d_No;} + break; + case 306: /* wqitem ::= nm eidlist_opt wqas LP select RP */ { - yymsp[-5].minor.yy91 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy232, yymsp[-1].minor.yy399); /*A-overwrites-X*/ + yymsp[-5].minor.yy385 = sqlite3CteNew(pParse, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy322, yymsp[-1].minor.yy47, yymsp[-3].minor.yy516); /*A-overwrites-X*/ } break; - case 282: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */ + case 307: /* wqlist ::= wqitem */ { - yymsp[-7].minor.yy91 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy91, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy232, yymsp[-1].minor.yy399); + yymsp[0].minor.yy521 = sqlite3WithAdd(pParse, 0, yymsp[0].minor.yy385); /*A-overwrites-X*/ } break; + case 308: /* wqlist ::= wqlist COMMA wqitem */ +{ + yymsp[-2].minor.yy521 = sqlite3WithAdd(pParse, yymsp[-2].minor.yy521, yymsp[0].minor.yy385); +} + break; + case 309: /* windowdefn_list ::= windowdefn_list COMMA windowdefn */ +{ + assert( yymsp[0].minor.yy41!=0 ); + sqlite3WindowChain(pParse, yymsp[0].minor.yy41, yymsp[-2].minor.yy41); + yymsp[0].minor.yy41->pNextWin = yymsp[-2].minor.yy41; + yylhsminor.yy41 = yymsp[0].minor.yy41; +} + yymsp[-2].minor.yy41 = yylhsminor.yy41; + break; + case 310: /* windowdefn ::= nm AS LP window RP */ +{ + if( ALWAYS(yymsp[-1].minor.yy41) ){ + yymsp[-1].minor.yy41->zName = sqlite3DbStrNDup(pParse->db, yymsp[-4].minor.yy0.z, yymsp[-4].minor.yy0.n); + } + yylhsminor.yy41 = yymsp[-1].minor.yy41; +} + yymsp[-4].minor.yy41 = yylhsminor.yy41; + break; + case 311: /* window ::= PARTITION BY nexprlist orderby_opt frame_opt */ +{ + yymsp[-4].minor.yy41 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy41, yymsp[-2].minor.yy322, yymsp[-1].minor.yy322, 0); +} + break; + case 312: /* window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */ +{ + yylhsminor.yy41 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy41, yymsp[-2].minor.yy322, yymsp[-1].minor.yy322, &yymsp[-5].minor.yy0); +} + yymsp[-5].minor.yy41 = yylhsminor.yy41; + break; + case 313: /* window ::= ORDER BY sortlist frame_opt */ +{ + yymsp[-3].minor.yy41 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy41, 0, yymsp[-1].minor.yy322, 0); +} + break; + case 314: /* window ::= nm ORDER BY sortlist frame_opt */ +{ + yylhsminor.yy41 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy41, 0, yymsp[-1].minor.yy322, &yymsp[-4].minor.yy0); +} + yymsp[-4].minor.yy41 = yylhsminor.yy41; + break; + case 315: /* window ::= nm frame_opt */ +{ + yylhsminor.yy41 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy41, 0, 0, &yymsp[-1].minor.yy0); +} + yymsp[-1].minor.yy41 = yylhsminor.yy41; + break; + case 316: /* frame_opt ::= */ +{ + yymsp[1].minor.yy41 = sqlite3WindowAlloc(pParse, 0, TK_UNBOUNDED, 0, TK_CURRENT, 0, 0); +} + break; + case 317: /* frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */ +{ + yylhsminor.yy41 = sqlite3WindowAlloc(pParse, yymsp[-2].minor.yy394, yymsp[-1].minor.yy595.eType, yymsp[-1].minor.yy595.pExpr, TK_CURRENT, 0, yymsp[0].minor.yy516); +} + yymsp[-2].minor.yy41 = yylhsminor.yy41; + break; + case 318: /* frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */ +{ + yylhsminor.yy41 = sqlite3WindowAlloc(pParse, yymsp[-5].minor.yy394, yymsp[-3].minor.yy595.eType, yymsp[-3].minor.yy595.pExpr, yymsp[-1].minor.yy595.eType, yymsp[-1].minor.yy595.pExpr, yymsp[0].minor.yy516); +} + yymsp[-5].minor.yy41 = yylhsminor.yy41; + break; + case 320: /* frame_bound_s ::= frame_bound */ + case 322: /* frame_bound_e ::= frame_bound */ yytestcase(yyruleno==322); +{yylhsminor.yy595 = yymsp[0].minor.yy595;} + yymsp[0].minor.yy595 = yylhsminor.yy595; + break; + case 321: /* frame_bound_s ::= UNBOUNDED PRECEDING */ + case 323: /* frame_bound_e ::= UNBOUNDED FOLLOWING */ yytestcase(yyruleno==323); + case 325: /* frame_bound ::= CURRENT ROW */ yytestcase(yyruleno==325); +{yylhsminor.yy595.eType = yymsp[-1].major; yylhsminor.yy595.pExpr = 0;} + yymsp[-1].minor.yy595 = yylhsminor.yy595; + break; + case 324: /* frame_bound ::= expr PRECEDING|FOLLOWING */ +{yylhsminor.yy595.eType = yymsp[0].major; yylhsminor.yy595.pExpr = yymsp[-1].minor.yy528;} + yymsp[-1].minor.yy595 = yylhsminor.yy595; + break; + case 326: /* frame_exclude_opt ::= */ +{yymsp[1].minor.yy516 = 0;} + break; + case 327: /* frame_exclude_opt ::= EXCLUDE frame_exclude */ +{yymsp[-1].minor.yy516 = yymsp[0].minor.yy516;} + break; + case 328: /* frame_exclude ::= NO OTHERS */ + case 329: /* frame_exclude ::= CURRENT ROW */ yytestcase(yyruleno==329); +{yymsp[-1].minor.yy516 = yymsp[-1].major; /*A-overwrites-X*/} + break; + case 330: /* frame_exclude ::= GROUP|TIES */ +{yymsp[0].minor.yy516 = yymsp[0].major; /*A-overwrites-X*/} + break; + case 331: /* window_clause ::= WINDOW windowdefn_list */ +{ yymsp[-1].minor.yy41 = yymsp[0].minor.yy41; } + break; + case 332: /* filter_over ::= filter_clause over_clause */ +{ + if( yymsp[0].minor.yy41 ){ + yymsp[0].minor.yy41->pFilter = yymsp[-1].minor.yy528; + }else{ + sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy528); + } + yylhsminor.yy41 = yymsp[0].minor.yy41; +} + yymsp[-1].minor.yy41 = yylhsminor.yy41; + break; + case 333: /* filter_over ::= over_clause */ +{ + yylhsminor.yy41 = yymsp[0].minor.yy41; +} + yymsp[0].minor.yy41 = yylhsminor.yy41; + break; + case 334: /* filter_over ::= filter_clause */ +{ + yylhsminor.yy41 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window)); + if( yylhsminor.yy41 ){ + yylhsminor.yy41->eFrmType = TK_FILTER; + yylhsminor.yy41->pFilter = yymsp[0].minor.yy528; + }else{ + sqlite3ExprDelete(pParse->db, yymsp[0].minor.yy528); + } +} + yymsp[0].minor.yy41 = yylhsminor.yy41; + break; + case 335: /* over_clause ::= OVER LP window RP */ +{ + yymsp[-3].minor.yy41 = yymsp[-1].minor.yy41; + assert( yymsp[-3].minor.yy41!=0 ); +} + break; + case 336: /* over_clause ::= OVER nm */ +{ + yymsp[-1].minor.yy41 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window)); + if( yymsp[-1].minor.yy41 ){ + yymsp[-1].minor.yy41->zName = sqlite3DbStrNDup(pParse->db, yymsp[0].minor.yy0.z, yymsp[0].minor.yy0.n); + } +} + break; + case 337: /* filter_clause ::= FILTER LP WHERE expr RP */ +{ yymsp[-4].minor.yy528 = yymsp[-1].minor.yy528; } + break; default: - /* (283) input ::= cmdlist */ yytestcase(yyruleno==283); - /* (284) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==284); - /* (285) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=285); - /* (286) ecmd ::= SEMI */ yytestcase(yyruleno==286); - /* (287) ecmd ::= cmdx SEMI */ yytestcase(yyruleno==287); - /* (288) ecmd ::= explain cmdx */ yytestcase(yyruleno==288); - /* (289) trans_opt ::= */ yytestcase(yyruleno==289); - /* (290) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==290); - /* (291) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==291); - /* (292) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==292); - /* (293) savepoint_opt ::= */ yytestcase(yyruleno==293); - /* (294) cmd ::= create_table create_table_args */ yytestcase(yyruleno==294); - /* (295) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==295); - /* (296) columnlist ::= columnname carglist */ yytestcase(yyruleno==296); - /* (297) nm ::= ID|INDEXED */ yytestcase(yyruleno==297); - /* (298) nm ::= STRING */ yytestcase(yyruleno==298); - /* (299) nm ::= JOIN_KW */ yytestcase(yyruleno==299); - /* (300) typetoken ::= typename */ yytestcase(yyruleno==300); - /* (301) typename ::= ID|STRING */ yytestcase(yyruleno==301); - /* (302) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=302); - /* (303) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=303); - /* (304) carglist ::= carglist ccons */ yytestcase(yyruleno==304); - /* (305) carglist ::= */ yytestcase(yyruleno==305); - /* (306) ccons ::= NULL onconf */ yytestcase(yyruleno==306); - /* (307) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==307); - /* (308) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==308); - /* (309) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=309); - /* (310) tconscomma ::= */ yytestcase(yyruleno==310); - /* (311) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=311); - /* (312) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=312); - /* (313) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=313); - /* (314) oneselect ::= values */ yytestcase(yyruleno==314); - /* (315) sclp ::= selcollist COMMA */ yytestcase(yyruleno==315); - /* (316) as ::= ID|STRING */ yytestcase(yyruleno==316); - /* (317) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=317); - /* (318) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==318); - /* (319) exprlist ::= nexprlist */ yytestcase(yyruleno==319); - /* (320) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=320); - /* (321) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=321); - /* (322) nmnum ::= ON */ yytestcase(yyruleno==322); - /* (323) nmnum ::= DELETE */ yytestcase(yyruleno==323); - /* (324) nmnum ::= DEFAULT */ yytestcase(yyruleno==324); - /* (325) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==325); - /* (326) foreach_clause ::= */ yytestcase(yyruleno==326); - /* (327) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==327); - /* (328) trnm ::= nm */ yytestcase(yyruleno==328); - /* (329) tridxby ::= */ yytestcase(yyruleno==329); - /* (330) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==330); - /* (331) database_kw_opt ::= */ yytestcase(yyruleno==331); - /* (332) kwcolumn_opt ::= */ yytestcase(yyruleno==332); - /* (333) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==333); - /* (334) vtabarglist ::= vtabarg */ yytestcase(yyruleno==334); - /* (335) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==335); - /* (336) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==336); - /* (337) anylist ::= */ yytestcase(yyruleno==337); - /* (338) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==338); - /* (339) anylist ::= anylist ANY */ yytestcase(yyruleno==339); - /* (340) with ::= */ yytestcase(yyruleno==340); + /* (338) input ::= cmdlist */ yytestcase(yyruleno==338); + /* (339) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==339); + /* (340) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=340); + /* (341) ecmd ::= SEMI */ yytestcase(yyruleno==341); + /* (342) ecmd ::= cmdx SEMI */ yytestcase(yyruleno==342); + /* (343) ecmd ::= explain cmdx SEMI (NEVER REDUCES) */ assert(yyruleno!=343); + /* (344) trans_opt ::= */ yytestcase(yyruleno==344); + /* (345) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==345); + /* (346) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==346); + /* (347) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==347); + /* (348) savepoint_opt ::= */ yytestcase(yyruleno==348); + /* (349) cmd ::= create_table create_table_args */ yytestcase(yyruleno==349); + /* (350) table_option_set ::= table_option (OPTIMIZED OUT) */ assert(yyruleno!=350); + /* (351) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==351); + /* (352) columnlist ::= columnname carglist */ yytestcase(yyruleno==352); + /* (353) nm ::= ID|INDEXED|JOIN_KW */ yytestcase(yyruleno==353); + /* (354) nm ::= STRING */ yytestcase(yyruleno==354); + /* (355) typetoken ::= typename */ yytestcase(yyruleno==355); + /* (356) typename ::= ID|STRING */ yytestcase(yyruleno==356); + /* (357) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=357); + /* (358) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=358); + /* (359) carglist ::= carglist ccons */ yytestcase(yyruleno==359); + /* (360) carglist ::= */ yytestcase(yyruleno==360); + /* (361) ccons ::= NULL onconf */ yytestcase(yyruleno==361); + /* (362) ccons ::= GENERATED ALWAYS AS generated */ yytestcase(yyruleno==362); + /* (363) ccons ::= AS generated */ yytestcase(yyruleno==363); + /* (364) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==364); + /* (365) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==365); + /* (366) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=366); + /* (367) tconscomma ::= */ yytestcase(yyruleno==367); + /* (368) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=368); + /* (369) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=369); + /* (370) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=370); + /* (371) oneselect ::= values */ yytestcase(yyruleno==371); + /* (372) sclp ::= selcollist COMMA */ yytestcase(yyruleno==372); + /* (373) as ::= ID|STRING */ yytestcase(yyruleno==373); + /* (374) indexed_opt ::= indexed_by (OPTIMIZED OUT) */ assert(yyruleno!=374); + /* (375) returning ::= */ yytestcase(yyruleno==375); + /* (376) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=376); + /* (377) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==377); + /* (378) case_operand ::= expr */ yytestcase(yyruleno==378); + /* (379) exprlist ::= nexprlist */ yytestcase(yyruleno==379); + /* (380) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=380); + /* (381) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=381); + /* (382) nmnum ::= ON */ yytestcase(yyruleno==382); + /* (383) nmnum ::= DELETE */ yytestcase(yyruleno==383); + /* (384) nmnum ::= DEFAULT */ yytestcase(yyruleno==384); + /* (385) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==385); + /* (386) foreach_clause ::= */ yytestcase(yyruleno==386); + /* (387) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==387); + /* (388) trnm ::= nm */ yytestcase(yyruleno==388); + /* (389) tridxby ::= */ yytestcase(yyruleno==389); + /* (390) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==390); + /* (391) database_kw_opt ::= */ yytestcase(yyruleno==391); + /* (392) kwcolumn_opt ::= */ yytestcase(yyruleno==392); + /* (393) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==393); + /* (394) vtabarglist ::= vtabarg */ yytestcase(yyruleno==394); + /* (395) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==395); + /* (396) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==396); + /* (397) anylist ::= */ yytestcase(yyruleno==397); + /* (398) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==398); + /* (399) anylist ::= anylist ANY */ yytestcase(yyruleno==399); + /* (400) with ::= */ yytestcase(yyruleno==400); + /* (401) windowdefn_list ::= windowdefn (OPTIMIZED OUT) */ assert(yyruleno!=401); + /* (402) window ::= frame_opt (OPTIMIZED OUT) */ assert(yyruleno!=402); break; /********** End reduce actions ************************************************/ }; - assert( yyrulenoyytos>=yypParser->yystack ); assert( yyact==yypParser->yytos->stateno ); - yyact = yy_find_shift_action(yymajor,yyact); + yyact = yy_find_shift_action((YYCODETYPE)yymajor,yyact); if( yyact >= YY_MIN_REDUCE ){ - yyact = yy_reduce(yypParser,yyact-YY_MIN_REDUCE,yymajor, - yyminor sqlite3ParserCTX_PARAM); + unsigned int yyruleno = yyact - YY_MIN_REDUCE; /* Reduce by this rule */ +#ifndef NDEBUG + assert( yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ); + if( yyTraceFILE ){ + int yysize = yyRuleInfoNRhs[yyruleno]; + if( yysize ){ + fprintf(yyTraceFILE, "%sReduce %d [%s]%s, pop back to state %d.\n", + yyTracePrompt, + yyruleno, yyRuleName[yyruleno], + yyrulenoyytos[yysize].stateno); + }else{ + fprintf(yyTraceFILE, "%sReduce %d [%s]%s.\n", + yyTracePrompt, yyruleno, yyRuleName[yyruleno], + yyrulenoyytos - yypParser->yystack)>yypParser->yyhwm ){ + yypParser->yyhwm++; + assert( yypParser->yyhwm == + (int)(yypParser->yytos - yypParser->yystack)); + } +#endif +#if YYSTACKDEPTH>0 + if( yypParser->yytos>=yypParser->yystackEnd ){ + yyStackOverflow(yypParser); + break; + } +#else + if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){ + if( yyGrowStack(yypParser) ){ + yyStackOverflow(yypParser); + break; + } + } +#endif + } + yyact = yy_reduce(yypParser,yyruleno,yymajor,yyminor sqlite3ParserCTX_PARAM); }else if( yyact <= YY_MAX_SHIFTREDUCE ){ - yy_shift(yypParser,yyact,yymajor,yyminor); + yy_shift(yypParser,yyact,(YYCODETYPE)yymajor,yyminor); #ifndef YYNOERRORRECOVERY yypParser->yyerrcnt--; #endif @@ -145356,7 +174538,7 @@ SQLITE_PRIVATE void sqlite3Parser( #ifdef YYERRORSYMBOL /* A syntax error has occurred. ** The response to an error depends upon whether or not the - ** grammar defines an error token "ERROR". + ** grammar defines an error token "ERROR". ** ** This is what we do if the grammar does define ERROR: ** @@ -145387,15 +174569,13 @@ SQLITE_PRIVATE void sqlite3Parser( yy_destructor(yypParser, (YYCODETYPE)yymajor, &yyminorunion); yymajor = YYNOCODE; }else{ - while( yypParser->yytos >= yypParser->yystack - && yymx != YYERRORSYMBOL - && (yyact = yy_find_reduce_action( - yypParser->yytos->stateno, - YYERRORSYMBOL)) >= YY_MIN_REDUCE - ){ + while( yypParser->yytos > yypParser->yystack ){ + yyact = yy_find_reduce_action(yypParser->yytos->stateno, + YYERRORSYMBOL); + if( yyact<=YY_MAX_SHIFTREDUCE ) break; yy_pop_parser_stack(yypParser); } - if( yypParser->yytos < yypParser->yystack || yymajor==0 ){ + if( yypParser->yytos <= yypParser->yystack || yymajor==0 ){ yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); yy_parse_failed(yypParser); #ifndef YYNOERRORRECOVERY @@ -145445,7 +174625,7 @@ SQLITE_PRIVATE void sqlite3Parser( break; #endif } - }while( yypParser->yytos>yypParser->yystack ); + } #ifndef NDEBUG if( yyTraceFILE ){ yyStackEntry *i; @@ -145461,6 +174641,20 @@ SQLITE_PRIVATE void sqlite3Parser( return; } +/* +** Return the fallback token corresponding to canonical token iToken, or +** 0 if iToken has no fallback. +*/ +SQLITE_PRIVATE int sqlite3ParserFallback(int iToken){ +#ifdef YYFALLBACK + assert( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) ); + return yyFallback[iToken]; +#else + (void)iToken; + return 0; +#endif +} + /************** End of parse.c ***********************************************/ /************** Begin file tokenize.c ****************************************/ /* @@ -145492,8 +174686,8 @@ SQLITE_PRIVATE void sqlite3Parser( ** all of them need to be used within the switch. */ #define CC_X 0 /* The letter 'x', or start of BLOB literal */ -#define CC_KYWD 1 /* Alphabetics or '_'. Usable in a keyword */ -#define CC_ID 2 /* unicode characters usable in IDs */ +#define CC_KYWD0 1 /* First letter of a keyword */ +#define CC_KYWD 2 /* Alphabetics or '_'. Usable in a keyword */ #define CC_DIGIT 3 /* Digits */ #define CC_DOLLAR 4 /* '$' */ #define CC_VARALPHA 5 /* '@', '#', ':'. Alphabetic SQL variables */ @@ -145518,46 +174712,49 @@ SQLITE_PRIVATE void sqlite3Parser( #define CC_AND 24 /* '&' */ #define CC_TILDA 25 /* '~' */ #define CC_DOT 26 /* '.' */ -#define CC_ILLEGAL 27 /* Illegal character */ +#define CC_ID 27 /* unicode characters usable in IDs */ +#define CC_ILLEGAL 28 /* Illegal character */ +#define CC_NUL 29 /* 0x00 */ +#define CC_BOM 30 /* First byte of UTF8 BOM: 0xEF 0xBB 0xBF */ static const unsigned char aiClass[] = { #ifdef SQLITE_ASCII /* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xa xb xc xd xe xf */ -/* 0x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 7, 7, 27, 7, 7, 27, 27, -/* 1x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 0x */ 29, 28, 28, 28, 28, 28, 28, 28, 28, 7, 7, 28, 7, 7, 28, 28, +/* 1x */ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, /* 2x */ 7, 15, 8, 5, 4, 22, 24, 8, 17, 18, 21, 20, 23, 11, 26, 16, /* 3x */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 19, 12, 14, 13, 6, /* 4x */ 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -/* 5x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 9, 27, 27, 27, 1, +/* 5x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 9, 28, 28, 28, 2, /* 6x */ 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -/* 7x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 27, 10, 27, 25, 27, -/* 8x */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* 9x */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Ax */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Bx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Cx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Dx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Ex */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -/* Fx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 +/* 7x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 28, 10, 28, 25, 28, +/* 8x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 9x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* Ax */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* Bx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* Cx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* Dx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* Ex */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 30, +/* Fx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27 #endif #ifdef SQLITE_EBCDIC /* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xa xb xc xd xe xf */ -/* 0x */ 27, 27, 27, 27, 27, 7, 27, 27, 27, 27, 27, 27, 7, 7, 27, 27, -/* 1x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -/* 2x */ 27, 27, 27, 27, 27, 7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -/* 3x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -/* 4x */ 7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 26, 12, 17, 20, 10, -/* 5x */ 24, 27, 27, 27, 27, 27, 27, 27, 27, 27, 15, 4, 21, 18, 19, 27, -/* 6x */ 11, 16, 27, 27, 27, 27, 27, 27, 27, 27, 27, 23, 22, 1, 13, 6, -/* 7x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 8, 5, 5, 5, 8, 14, 8, -/* 8x */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, -/* 9x */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, -/* Ax */ 27, 25, 1, 1, 1, 1, 1, 0, 1, 1, 27, 27, 27, 27, 27, 27, -/* Bx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 27, 27, 27, 27, 27, -/* Cx */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, -/* Dx */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, -/* Ex */ 27, 27, 1, 1, 1, 1, 1, 0, 1, 1, 27, 27, 27, 27, 27, 27, -/* Fx */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 27, 27, 27, 27, 27, 27, +/* 0x */ 29, 28, 28, 28, 28, 7, 28, 28, 28, 28, 28, 28, 7, 7, 28, 28, +/* 1x */ 28, 28, 28, 28, 28, 7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +/* 2x */ 28, 28, 28, 28, 28, 7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +/* 3x */ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +/* 4x */ 7, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 12, 17, 20, 10, +/* 5x */ 24, 28, 28, 28, 28, 28, 28, 28, 28, 28, 15, 4, 21, 18, 19, 28, +/* 6x */ 11, 16, 28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 22, 2, 13, 6, +/* 7x */ 28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 5, 5, 5, 8, 14, 8, +/* 8x */ 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 28, 28, 28, 28, 28, 28, +/* 9x */ 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 28, 28, 28, 28, 28, 28, +/* Ax */ 28, 25, 1, 1, 1, 1, 1, 0, 2, 2, 28, 28, 28, 28, 28, 28, +/* Bx */ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 9, 28, 28, 28, 28, 28, +/* Cx */ 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 28, 28, 28, 28, 28, 28, +/* Dx */ 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 28, 28, 28, 28, 28, 28, +/* Ex */ 28, 28, 1, 1, 1, 1, 1, 0, 2, 2, 28, 28, 28, 28, 28, 28, +/* Fx */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 28, 28, 28, 28, 28, 28, #endif }; @@ -145566,7 +174763,7 @@ static const unsigned char aiClass[] = { ** lower-case ASCII equivalent. On ASCII machines, this is just ** an upper-to-lower case map. On EBCDIC machines we also need ** to adjust the encoding. The mapping is only valid for alphabetics -** which are the only characters for which this feature is used. +** which are the only characters for which this feature is used. ** ** Used by keywordhash.h */ @@ -145598,7 +174795,7 @@ const unsigned char ebcdicToAscii[] = { /* ** The sqlite3KeywordCode function looks up an identifier to determine if -** it is a keyword. If it is a keyword, the token code of that keyword is +** it is a keyword. If it is a keyword, the token code of that keyword is ** returned. If the input is not a keyword, TK_ID is returned. ** ** The implementation of this routine was generated by a program, @@ -145622,295 +174819,467 @@ const unsigned char ebcdicToAscii[] = { ** is substantially reduced. This is important for embedded applications ** on platforms with limited memory. */ -/* Hash score: 185 */ -/* zKWText[] encodes 845 bytes of keyword text in 561 bytes */ +/* Hash score: 231 */ +/* zKWText[] encodes 1007 bytes of keyword text in 667 bytes */ /* REINDEXEDESCAPEACHECKEYBEFOREIGNOREGEXPLAINSTEADDATABASELECT */ -/* ABLEFTHENDEFERRABLELSEXCEPTRANSACTIONATURALTERAISEXCLUSIVE */ -/* XISTSAVEPOINTERSECTRIGGEREFERENCESCONSTRAINTOFFSETEMPORARY */ -/* UNIQUERYWITHOUTERELEASEATTACHAVINGROUPDATEBEGINNERECURSIVE */ -/* BETWEENOTHINGLOBYCASCADELETECASECOLLATECREATECURRENT_DATE */ -/* DETACHIMMEDIATEJOINSERTLIKEMATCHPLANALYZEPRAGMABORTVALUES */ -/* VIRTUALIMITWHENOTNULLWHERENAMEAFTEREPLACEANDEFAULT */ -/* AUTOINCREMENTCASTCOLUMNCOMMITCONFLICTCROSSCURRENT_TIMESTAMP */ -/* RIMARYDEFERREDISTINCTDORDERESTRICTDROPFAILFROMFULLIFISNULL */ -/* RIGHTROLLBACKROWUNIONUSINGVACUUMVIEWINITIALLY */ -static const char zKWText[560] = { +/* ABLEFTHENDEFERRABLELSEXCLUDELETEMPORARYISNULLSAVEPOINTERSECT */ +/* IESNOTNULLIKEXCEPTRANSACTIONATURALTERAISEXCLUSIVEXISTS */ +/* CONSTRAINTOFFSETRIGGERANGENERATEDETACHAVINGLOBEGINNEREFERENCES */ +/* UNIQUERYWITHOUTERELEASEATTACHBETWEENOTHINGROUPSCASCADEFAULT */ +/* CASECOLLATECREATECURRENT_DATEIMMEDIATEJOINSERTMATCHPLANALYZE */ +/* PRAGMATERIALIZEDEFERREDISTINCTUPDATEVALUESVIRTUALWAYSWHENWHERE */ +/* CURSIVEABORTAFTERENAMEANDROPARTITIONAUTOINCREMENTCASTCOLUMN */ +/* COMMITCONFLICTCROSSCURRENT_TIMESTAMPRECEDINGFAILASTFILTER */ +/* EPLACEFIRSTFOLLOWINGFROMFULLIMITIFORDERESTRICTOTHERSOVER */ +/* ETURNINGRIGHTROLLBACKROWSUNBOUNDEDUNIONUSINGVACUUMVIEWINDOWBY */ +/* INITIALLYPRIMARY */ +static const char zKWText[666] = { 'R','E','I','N','D','E','X','E','D','E','S','C','A','P','E','A','C','H', 'E','C','K','E','Y','B','E','F','O','R','E','I','G','N','O','R','E','G', 'E','X','P','L','A','I','N','S','T','E','A','D','D','A','T','A','B','A', 'S','E','L','E','C','T','A','B','L','E','F','T','H','E','N','D','E','F', - 'E','R','R','A','B','L','E','L','S','E','X','C','E','P','T','R','A','N', - 'S','A','C','T','I','O','N','A','T','U','R','A','L','T','E','R','A','I', - 'S','E','X','C','L','U','S','I','V','E','X','I','S','T','S','A','V','E', - 'P','O','I','N','T','E','R','S','E','C','T','R','I','G','G','E','R','E', - 'F','E','R','E','N','C','E','S','C','O','N','S','T','R','A','I','N','T', - 'O','F','F','S','E','T','E','M','P','O','R','A','R','Y','U','N','I','Q', - 'U','E','R','Y','W','I','T','H','O','U','T','E','R','E','L','E','A','S', - 'E','A','T','T','A','C','H','A','V','I','N','G','R','O','U','P','D','A', - 'T','E','B','E','G','I','N','N','E','R','E','C','U','R','S','I','V','E', - 'B','E','T','W','E','E','N','O','T','H','I','N','G','L','O','B','Y','C', - 'A','S','C','A','D','E','L','E','T','E','C','A','S','E','C','O','L','L', - 'A','T','E','C','R','E','A','T','E','C','U','R','R','E','N','T','_','D', - 'A','T','E','D','E','T','A','C','H','I','M','M','E','D','I','A','T','E', - 'J','O','I','N','S','E','R','T','L','I','K','E','M','A','T','C','H','P', - 'L','A','N','A','L','Y','Z','E','P','R','A','G','M','A','B','O','R','T', - 'V','A','L','U','E','S','V','I','R','T','U','A','L','I','M','I','T','W', - 'H','E','N','O','T','N','U','L','L','W','H','E','R','E','N','A','M','E', - 'A','F','T','E','R','E','P','L','A','C','E','A','N','D','E','F','A','U', - 'L','T','A','U','T','O','I','N','C','R','E','M','E','N','T','C','A','S', - 'T','C','O','L','U','M','N','C','O','M','M','I','T','C','O','N','F','L', - 'I','C','T','C','R','O','S','S','C','U','R','R','E','N','T','_','T','I', - 'M','E','S','T','A','M','P','R','I','M','A','R','Y','D','E','F','E','R', - 'R','E','D','I','S','T','I','N','C','T','D','O','R','D','E','R','E','S', - 'T','R','I','C','T','D','R','O','P','F','A','I','L','F','R','O','M','F', - 'U','L','L','I','F','I','S','N','U','L','L','R','I','G','H','T','R','O', - 'L','L','B','A','C','K','R','O','W','U','N','I','O','N','U','S','I','N', - 'G','V','A','C','U','U','M','V','I','E','W','I','N','I','T','I','A','L', - 'L','Y', + 'E','R','R','A','B','L','E','L','S','E','X','C','L','U','D','E','L','E', + 'T','E','M','P','O','R','A','R','Y','I','S','N','U','L','L','S','A','V', + 'E','P','O','I','N','T','E','R','S','E','C','T','I','E','S','N','O','T', + 'N','U','L','L','I','K','E','X','C','E','P','T','R','A','N','S','A','C', + 'T','I','O','N','A','T','U','R','A','L','T','E','R','A','I','S','E','X', + 'C','L','U','S','I','V','E','X','I','S','T','S','C','O','N','S','T','R', + 'A','I','N','T','O','F','F','S','E','T','R','I','G','G','E','R','A','N', + 'G','E','N','E','R','A','T','E','D','E','T','A','C','H','A','V','I','N', + 'G','L','O','B','E','G','I','N','N','E','R','E','F','E','R','E','N','C', + 'E','S','U','N','I','Q','U','E','R','Y','W','I','T','H','O','U','T','E', + 'R','E','L','E','A','S','E','A','T','T','A','C','H','B','E','T','W','E', + 'E','N','O','T','H','I','N','G','R','O','U','P','S','C','A','S','C','A', + 'D','E','F','A','U','L','T','C','A','S','E','C','O','L','L','A','T','E', + 'C','R','E','A','T','E','C','U','R','R','E','N','T','_','D','A','T','E', + 'I','M','M','E','D','I','A','T','E','J','O','I','N','S','E','R','T','M', + 'A','T','C','H','P','L','A','N','A','L','Y','Z','E','P','R','A','G','M', + 'A','T','E','R','I','A','L','I','Z','E','D','E','F','E','R','R','E','D', + 'I','S','T','I','N','C','T','U','P','D','A','T','E','V','A','L','U','E', + 'S','V','I','R','T','U','A','L','W','A','Y','S','W','H','E','N','W','H', + 'E','R','E','C','U','R','S','I','V','E','A','B','O','R','T','A','F','T', + 'E','R','E','N','A','M','E','A','N','D','R','O','P','A','R','T','I','T', + 'I','O','N','A','U','T','O','I','N','C','R','E','M','E','N','T','C','A', + 'S','T','C','O','L','U','M','N','C','O','M','M','I','T','C','O','N','F', + 'L','I','C','T','C','R','O','S','S','C','U','R','R','E','N','T','_','T', + 'I','M','E','S','T','A','M','P','R','E','C','E','D','I','N','G','F','A', + 'I','L','A','S','T','F','I','L','T','E','R','E','P','L','A','C','E','F', + 'I','R','S','T','F','O','L','L','O','W','I','N','G','F','R','O','M','F', + 'U','L','L','I','M','I','T','I','F','O','R','D','E','R','E','S','T','R', + 'I','C','T','O','T','H','E','R','S','O','V','E','R','E','T','U','R','N', + 'I','N','G','R','I','G','H','T','R','O','L','L','B','A','C','K','R','O', + 'W','S','U','N','B','O','U','N','D','E','D','U','N','I','O','N','U','S', + 'I','N','G','V','A','C','U','U','M','V','I','E','W','I','N','D','O','W', + 'B','Y','I','N','I','T','I','A','L','L','Y','P','R','I','M','A','R','Y', }; /* aKWHash[i] is the hash value for the i-th keyword */ static const unsigned char aKWHash[127] = { - 74, 108, 119, 72, 0, 45, 0, 0, 81, 0, 76, 61, 0, - 42, 12, 77, 15, 0, 118, 84, 54, 116, 0, 19, 0, 0, - 123, 0, 121, 111, 0, 22, 96, 0, 9, 0, 0, 68, 69, - 0, 67, 6, 0, 48, 93, 105, 0, 120, 104, 0, 0, 44, - 0, 106, 24, 0, 17, 0, 124, 53, 23, 0, 5, 62, 25, - 99, 0, 0, 126, 112, 60, 125, 57, 28, 55, 0, 94, 0, - 103, 26, 0, 102, 0, 0, 0, 98, 95, 100, 91, 115, 14, - 39, 114, 0, 80, 0, 109, 92, 90, 32, 0, 122, 79, 117, - 86, 46, 83, 0, 0, 97, 40, 59, 110, 0, 36, 0, 0, - 29, 0, 89, 87, 88, 0, 20, 85, 0, 56, + 84, 92, 134, 82, 105, 29, 0, 0, 94, 0, 85, 72, 0, + 53, 35, 86, 15, 0, 42, 97, 54, 89, 135, 19, 0, 0, + 140, 0, 40, 129, 0, 22, 107, 0, 9, 0, 0, 123, 80, + 0, 78, 6, 0, 65, 103, 147, 0, 136, 115, 0, 0, 48, + 0, 90, 24, 0, 17, 0, 27, 70, 23, 26, 5, 60, 142, + 110, 122, 0, 73, 91, 71, 145, 61, 120, 74, 0, 49, 0, + 11, 41, 0, 113, 0, 0, 0, 109, 10, 111, 116, 125, 14, + 50, 124, 0, 100, 0, 18, 121, 144, 56, 130, 139, 88, 83, + 37, 30, 126, 0, 0, 108, 51, 131, 128, 0, 34, 0, 0, + 132, 0, 98, 38, 39, 0, 20, 45, 117, 93, }; /* aKWNext[] forms the hash collision chain. If aKWHash[i]==0 ** then the i-th keyword has no more hash collisions. Otherwise, ** the next keyword with the same hash is aKWHash[i]-1. */ -static const unsigned char aKWNext[126] = { - 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 2, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, - 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 33, 0, 21, 0, 0, 0, 0, 0, 50, - 0, 43, 3, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 1, 64, 0, 0, 65, 0, 41, 0, 38, 0, 0, 0, - 0, 0, 49, 75, 0, 0, 30, 0, 58, 0, 0, 63, 31, - 52, 16, 34, 10, 0, 0, 0, 0, 0, 0, 0, 11, 70, - 78, 0, 8, 0, 18, 51, 0, 107, 101, 0, 113, 0, 73, - 27, 37, 71, 82, 0, 35, 66, 0, 0, +static const unsigned char aKWNext[148] = {0, + 0, 0, 0, 0, 4, 0, 43, 0, 0, 106, 114, 0, 0, + 0, 2, 0, 0, 143, 0, 0, 0, 13, 0, 0, 0, 0, + 141, 0, 0, 119, 52, 0, 0, 137, 12, 0, 0, 62, 0, + 138, 0, 133, 0, 0, 36, 0, 0, 28, 77, 0, 0, 0, + 0, 59, 0, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 69, 0, 0, 0, 0, 0, 146, 3, 0, 58, 0, 1, + 75, 0, 0, 0, 31, 0, 0, 0, 0, 0, 127, 0, 104, + 0, 64, 66, 63, 0, 0, 0, 0, 0, 46, 0, 16, 8, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 81, 101, 0, + 112, 21, 7, 67, 0, 79, 96, 118, 0, 0, 68, 0, 0, + 99, 44, 0, 55, 0, 76, 0, 95, 32, 33, 57, 25, 0, + 102, 0, 0, 87, }; /* aKWLen[i] is the length (in bytes) of the i-th keyword */ -static const unsigned char aKWLen[126] = { +static const unsigned char aKWLen[148] = {0, 7, 7, 5, 4, 6, 4, 5, 3, 6, 7, 3, 6, 6, - 7, 7, 3, 8, 2, 6, 5, 4, 4, 3, 10, 4, 6, - 11, 6, 2, 7, 5, 5, 9, 6, 9, 9, 7, 10, 10, - 4, 6, 2, 3, 9, 4, 2, 6, 5, 7, 4, 5, 7, - 6, 6, 5, 6, 5, 5, 9, 7, 7, 4, 2, 7, 3, - 6, 4, 7, 6, 12, 6, 9, 4, 6, 4, 5, 4, 7, - 6, 5, 6, 7, 5, 4, 7, 3, 2, 4, 5, 6, 5, - 7, 3, 7, 13, 2, 2, 4, 6, 6, 8, 5, 17, 12, - 7, 8, 8, 2, 2, 5, 8, 4, 4, 4, 4, 2, 6, - 5, 8, 3, 5, 5, 6, 4, 9, 3, + 7, 7, 3, 8, 2, 6, 5, 4, 4, 3, 10, 4, 7, + 6, 9, 4, 2, 6, 5, 9, 9, 4, 7, 3, 2, 4, + 4, 6, 11, 6, 2, 7, 5, 5, 9, 6, 10, 4, 6, + 2, 3, 7, 5, 9, 6, 6, 4, 5, 5, 10, 6, 5, + 7, 4, 5, 7, 6, 7, 7, 6, 5, 7, 3, 7, 4, + 7, 6, 12, 9, 4, 6, 5, 4, 7, 6, 12, 8, 8, + 2, 6, 6, 7, 6, 4, 5, 9, 5, 5, 6, 3, 4, + 9, 13, 2, 2, 4, 6, 6, 8, 5, 17, 12, 7, 9, + 4, 4, 6, 7, 5, 9, 4, 4, 5, 2, 5, 8, 6, + 4, 9, 5, 8, 4, 3, 9, 5, 5, 6, 4, 6, 2, + 2, 9, 3, 7, }; /* aKWOffset[i] is the index into zKWText[] of the start of ** the text for the i-th keyword. */ -static const unsigned short int aKWOffset[126] = { +static const unsigned short int aKWOffset[148] = {0, 0, 2, 2, 8, 9, 14, 16, 20, 23, 25, 25, 29, 33, 36, 41, 46, 48, 53, 54, 59, 62, 65, 67, 69, 78, 81, - 86, 91, 95, 96, 101, 105, 109, 117, 122, 128, 136, 142, 152, - 159, 162, 162, 165, 167, 167, 171, 176, 179, 184, 184, 188, 192, - 199, 204, 209, 212, 218, 221, 225, 234, 240, 246, 249, 251, 252, - 256, 262, 266, 273, 279, 291, 297, 306, 308, 314, 318, 323, 325, - 332, 337, 342, 348, 354, 359, 362, 362, 362, 365, 369, 372, 378, - 382, 389, 391, 398, 400, 402, 411, 415, 421, 427, 435, 440, 440, - 456, 463, 470, 471, 478, 479, 483, 491, 495, 499, 503, 507, 509, - 515, 520, 528, 531, 536, 541, 547, 551, 556, + 86, 90, 90, 94, 99, 101, 105, 111, 119, 123, 123, 123, 126, + 129, 132, 137, 142, 146, 147, 152, 156, 160, 168, 174, 181, 184, + 184, 187, 189, 195, 198, 206, 211, 216, 219, 222, 226, 236, 239, + 244, 244, 248, 252, 259, 265, 271, 277, 277, 283, 284, 288, 295, + 299, 306, 312, 324, 333, 335, 341, 346, 348, 355, 359, 370, 377, + 378, 385, 391, 397, 402, 408, 412, 415, 424, 429, 433, 439, 441, + 444, 453, 455, 457, 466, 470, 476, 482, 490, 495, 495, 495, 511, + 520, 523, 527, 532, 539, 544, 553, 557, 560, 565, 567, 571, 579, + 585, 588, 597, 602, 610, 610, 614, 623, 628, 633, 639, 642, 645, + 648, 650, 655, 659, }; /* aKWCode[i] is the parser symbol code for the i-th keyword */ -static const unsigned char aKWCode[126] = { - TK_REINDEX, TK_INDEXED, TK_INDEX, TK_DESC, TK_ESCAPE, - TK_EACH, TK_CHECK, TK_KEY, TK_BEFORE, TK_FOREIGN, - TK_FOR, TK_IGNORE, TK_LIKE_KW, TK_EXPLAIN, TK_INSTEAD, - TK_ADD, TK_DATABASE, TK_AS, TK_SELECT, TK_TABLE, - TK_JOIN_KW, TK_THEN, TK_END, TK_DEFERRABLE, TK_ELSE, - TK_EXCEPT, TK_TRANSACTION,TK_ACTION, TK_ON, TK_JOIN_KW, - TK_ALTER, TK_RAISE, TK_EXCLUSIVE, TK_EXISTS, TK_SAVEPOINT, - TK_INTERSECT, TK_TRIGGER, TK_REFERENCES, TK_CONSTRAINT, TK_INTO, - TK_OFFSET, TK_OF, TK_SET, TK_TEMP, TK_TEMP, - TK_OR, TK_UNIQUE, TK_QUERY, TK_WITHOUT, TK_WITH, - TK_JOIN_KW, TK_RELEASE, TK_ATTACH, TK_HAVING, TK_GROUP, - TK_UPDATE, TK_BEGIN, TK_JOIN_KW, TK_RECURSIVE, TK_BETWEEN, - TK_NOTHING, TK_LIKE_KW, TK_BY, TK_CASCADE, TK_ASC, - TK_DELETE, TK_CASE, TK_COLLATE, TK_CREATE, TK_CTIME_KW, - TK_DETACH, TK_IMMEDIATE, TK_JOIN, TK_INSERT, TK_LIKE_KW, - TK_MATCH, TK_PLAN, TK_ANALYZE, TK_PRAGMA, TK_ABORT, - TK_VALUES, TK_VIRTUAL, TK_LIMIT, TK_WHEN, TK_NOTNULL, - TK_NOT, TK_NO, TK_NULL, TK_WHERE, TK_RENAME, - TK_AFTER, TK_REPLACE, TK_AND, TK_DEFAULT, TK_AUTOINCR, - TK_TO, TK_IN, TK_CAST, TK_COLUMNKW, TK_COMMIT, - TK_CONFLICT, TK_JOIN_KW, TK_CTIME_KW, TK_CTIME_KW, TK_PRIMARY, - TK_DEFERRED, TK_DISTINCT, TK_IS, TK_DO, TK_ORDER, - TK_RESTRICT, TK_DROP, TK_FAIL, TK_FROM, TK_JOIN_KW, - TK_IF, TK_ISNULL, TK_JOIN_KW, TK_ROLLBACK, TK_ROW, - TK_UNION, TK_USING, TK_VACUUM, TK_VIEW, TK_INITIALLY, - TK_ALL, +static const unsigned char aKWCode[148] = {0, + TK_REINDEX, TK_INDEXED, TK_INDEX, TK_DESC, TK_ESCAPE, + TK_EACH, TK_CHECK, TK_KEY, TK_BEFORE, TK_FOREIGN, + TK_FOR, TK_IGNORE, TK_LIKE_KW, TK_EXPLAIN, TK_INSTEAD, + TK_ADD, TK_DATABASE, TK_AS, TK_SELECT, TK_TABLE, + TK_JOIN_KW, TK_THEN, TK_END, TK_DEFERRABLE, TK_ELSE, + TK_EXCLUDE, TK_DELETE, TK_TEMP, TK_TEMP, TK_OR, + TK_ISNULL, TK_NULLS, TK_SAVEPOINT, TK_INTERSECT, TK_TIES, + TK_NOTNULL, TK_NOT, TK_NO, TK_NULL, TK_LIKE_KW, + TK_EXCEPT, TK_TRANSACTION,TK_ACTION, TK_ON, TK_JOIN_KW, + TK_ALTER, TK_RAISE, TK_EXCLUSIVE, TK_EXISTS, TK_CONSTRAINT, + TK_INTO, TK_OFFSET, TK_OF, TK_SET, TK_TRIGGER, + TK_RANGE, TK_GENERATED, TK_DETACH, TK_HAVING, TK_LIKE_KW, + TK_BEGIN, TK_JOIN_KW, TK_REFERENCES, TK_UNIQUE, TK_QUERY, + TK_WITHOUT, TK_WITH, TK_JOIN_KW, TK_RELEASE, TK_ATTACH, + TK_BETWEEN, TK_NOTHING, TK_GROUPS, TK_GROUP, TK_CASCADE, + TK_ASC, TK_DEFAULT, TK_CASE, TK_COLLATE, TK_CREATE, + TK_CTIME_KW, TK_IMMEDIATE, TK_JOIN, TK_INSERT, TK_MATCH, + TK_PLAN, TK_ANALYZE, TK_PRAGMA, TK_MATERIALIZED, TK_DEFERRED, + TK_DISTINCT, TK_IS, TK_UPDATE, TK_VALUES, TK_VIRTUAL, + TK_ALWAYS, TK_WHEN, TK_WHERE, TK_RECURSIVE, TK_ABORT, + TK_AFTER, TK_RENAME, TK_AND, TK_DROP, TK_PARTITION, + TK_AUTOINCR, TK_TO, TK_IN, TK_CAST, TK_COLUMNKW, + TK_COMMIT, TK_CONFLICT, TK_JOIN_KW, TK_CTIME_KW, TK_CTIME_KW, + TK_CURRENT, TK_PRECEDING, TK_FAIL, TK_LAST, TK_FILTER, + TK_REPLACE, TK_FIRST, TK_FOLLOWING, TK_FROM, TK_JOIN_KW, + TK_LIMIT, TK_IF, TK_ORDER, TK_RESTRICT, TK_OTHERS, + TK_OVER, TK_RETURNING, TK_JOIN_KW, TK_ROLLBACK, TK_ROWS, + TK_ROW, TK_UNBOUNDED, TK_UNION, TK_USING, TK_VACUUM, + TK_VIEW, TK_WINDOW, TK_DO, TK_BY, TK_INITIALLY, + TK_ALL, TK_PRIMARY, }; +/* Hash table decoded: +** 0: INSERT +** 1: IS +** 2: ROLLBACK TRIGGER +** 3: IMMEDIATE +** 4: PARTITION +** 5: TEMP +** 6: +** 7: +** 8: VALUES WITHOUT +** 9: +** 10: MATCH +** 11: NOTHING +** 12: +** 13: OF +** 14: TIES IGNORE +** 15: PLAN +** 16: INSTEAD INDEXED +** 17: +** 18: TRANSACTION RIGHT +** 19: WHEN +** 20: SET HAVING +** 21: MATERIALIZED IF +** 22: ROWS +** 23: SELECT +** 24: +** 25: +** 26: VACUUM SAVEPOINT +** 27: +** 28: LIKE UNION VIRTUAL REFERENCES +** 29: RESTRICT +** 30: +** 31: THEN REGEXP +** 32: TO +** 33: +** 34: BEFORE +** 35: +** 36: +** 37: FOLLOWING COLLATE CASCADE +** 38: CREATE +** 39: +** 40: CASE REINDEX +** 41: EACH +** 42: +** 43: QUERY +** 44: AND ADD +** 45: PRIMARY ANALYZE +** 46: +** 47: ROW ASC DETACH +** 48: CURRENT_TIME CURRENT_DATE +** 49: +** 50: +** 51: EXCLUSIVE TEMPORARY +** 52: +** 53: DEFERRED +** 54: DEFERRABLE +** 55: +** 56: DATABASE +** 57: +** 58: DELETE VIEW GENERATED +** 59: ATTACH +** 60: END +** 61: EXCLUDE +** 62: ESCAPE DESC +** 63: GLOB +** 64: WINDOW ELSE +** 65: COLUMN +** 66: FIRST +** 67: +** 68: GROUPS ALL +** 69: DISTINCT DROP KEY +** 70: BETWEEN +** 71: INITIALLY +** 72: BEGIN +** 73: FILTER CHECK ACTION +** 74: GROUP INDEX +** 75: +** 76: EXISTS DEFAULT +** 77: +** 78: FOR CURRENT_TIMESTAMP +** 79: EXCEPT +** 80: +** 81: CROSS +** 82: +** 83: +** 84: +** 85: CAST +** 86: FOREIGN AUTOINCREMENT +** 87: COMMIT +** 88: CURRENT AFTER ALTER +** 89: FULL FAIL CONFLICT +** 90: EXPLAIN +** 91: CONSTRAINT +** 92: FROM ALWAYS +** 93: +** 94: ABORT +** 95: +** 96: AS DO +** 97: REPLACE WITH RELEASE +** 98: BY RENAME +** 99: RANGE RAISE +** 100: OTHERS +** 101: USING NULLS +** 102: PRAGMA +** 103: JOIN ISNULL OFFSET +** 104: NOT +** 105: OR LAST LEFT +** 106: LIMIT +** 107: +** 108: +** 109: IN +** 110: INTO +** 111: OVER RECURSIVE +** 112: ORDER OUTER +** 113: +** 114: INTERSECT UNBOUNDED +** 115: +** 116: +** 117: RETURNING ON +** 118: +** 119: WHERE +** 120: NO INNER +** 121: NULL +** 122: +** 123: TABLE +** 124: NATURAL NOTNULL +** 125: PRECEDING +** 126: UPDATE UNIQUE +*/ /* Check to see if z[0..n-1] is a keyword. If it is, write the ** parser symbol code for that keyword into *pType. Always ** return the integer n (the length of the token). */ static int keywordCode(const char *z, int n, int *pType){ int i, j; const char *zKW; - if( n>=2 ){ - i = ((charMap(z[0])*4) ^ (charMap(z[n-1])*3) ^ n) % 127; - for(i=((int)aKWHash[i])-1; i>=0; i=((int)aKWNext[i])-1){ - if( aKWLen[i]!=n ) continue; - j = 0; - zKW = &zKWText[aKWOffset[i]]; + assert( n>=2 ); + i = ((charMap(z[0])*4) ^ (charMap(z[n-1])*3) ^ n*1) % 127; + for(i=(int)aKWHash[i]; i>0; i=aKWNext[i]){ + if( aKWLen[i]!=n ) continue; + zKW = &zKWText[aKWOffset[i]]; #ifdef SQLITE_ASCII - while( j=2 ) keywordCode((char*)z, n, &id); return id; } -#define SQLITE_N_KEYWORD 126 +#define SQLITE_N_KEYWORD 147 SQLITE_API int sqlite3_keyword_name(int i,const char **pzName,int *pnName){ if( i<0 || i>=SQLITE_N_KEYWORD ) return SQLITE_ERROR; + i++; *pzName = zKWText + aKWOffset[i]; *pnName = aKWLen[i]; return SQLITE_OK; @@ -145929,14 +175298,14 @@ SQLITE_API int sqlite3_keyword_check(const char *zName, int nName){ ** IdChar(X) will be true. Otherwise it is false. ** ** For ASCII, any character with the high-order bit set is -** allowed in an identifier. For 7-bit characters, +** allowed in an identifier. For 7-bit characters, ** sqlite3IsIdChar[X] must be 1. ** ** For EBCDIC, the rules are more complex but have the same ** end result. ** ** Ticket #1066. the SQL standard does not allow '$' in the -** middle of identifiers. But many SQL implementations do. +** middle of identifiers. But many SQL implementations do. ** SQLite will allow '$' in identifiers for compatibility. ** But the feature is undocumented. */ @@ -145962,14 +175331,88 @@ SQLITE_PRIVATE const char sqlite3IsEbcdicIdChar[] = { #define IdChar(C) (((c=C)>=0x42 && sqlite3IsEbcdicIdChar[c-0x40])) #endif -/* Make the IdChar function accessible from ctime.c */ -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS +/* Make the IdChar function accessible from ctime.c and alter.c */ SQLITE_PRIVATE int sqlite3IsIdChar(u8 c){ return IdChar(c); } -#endif +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** Return the id of the next token in string (*pz). Before returning, set +** (*pz) to point to the byte following the parsed token. +*/ +static int getToken(const unsigned char **pz){ + const unsigned char *z = *pz; + int t; /* Token type to return */ + do { + z += sqlite3GetToken(z, &t); + }while( t==TK_SPACE ); + if( t==TK_ID + || t==TK_STRING + || t==TK_JOIN_KW + || t==TK_WINDOW + || t==TK_OVER + || sqlite3ParserFallback(t)==TK_ID + ){ + t = TK_ID; + } + *pz = z; + return t; +} /* -** Return the length (in bytes) of the token that begins at z[0]. +** The following three functions are called immediately after the tokenizer +** reads the keywords WINDOW, OVER and FILTER, respectively, to determine +** whether the token should be treated as a keyword or an SQL identifier. +** This cannot be handled by the usual lemon %fallback method, due to +** the ambiguity in some constructions. e.g. +** +** SELECT sum(x) OVER ... +** +** In the above, "OVER" might be a keyword, or it might be an alias for the +** sum(x) expression. If a "%fallback ID OVER" directive were added to +** grammar, then SQLite would always treat "OVER" as an alias, making it +** impossible to call a window-function without a FILTER clause. +** +** WINDOW is treated as a keyword if: +** +** * the following token is an identifier, or a keyword that can fallback +** to being an identifier, and +** * the token after than one is TK_AS. +** +** OVER is a keyword if: +** +** * the previous token was TK_RP, and +** * the next token is either TK_LP or an identifier. +** +** FILTER is a keyword if: +** +** * the previous token was TK_RP, and +** * the next token is TK_LP. +*/ +static int analyzeWindowKeyword(const unsigned char *z){ + int t; + t = getToken(&z); + if( t!=TK_ID ) return TK_ID; + t = getToken(&z); + if( t!=TK_AS ) return TK_ID; + return TK_WINDOW; +} +static int analyzeOverKeyword(const unsigned char *z, int lastToken){ + if( lastToken==TK_RP ){ + int t = getToken(&z); + if( t==TK_LP || t==TK_ID ) return TK_OVER; + } + return TK_ID; +} +static int analyzeFilterKeyword(const unsigned char *z, int lastToken){ + if( lastToken==TK_RP && getToken(&z)==TK_LP ){ + return TK_FILTER; + } + return TK_ID; +} +#endif /* SQLITE_OMIT_WINDOWFUNC */ + +/* +** Return the length (in bytes) of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ @@ -145992,6 +175435,9 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; + }else if( z[1]=='>' ){ + *tokenType = TK_PTR; + return 2 + (z[2]=='>'); } *tokenType = TK_MINUS; return 1; @@ -146126,12 +175572,13 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ } /* If the next character is a digit, this is a floating point ** number that begins with ".". Fall thru into the next case */ + /* no break */ deliberate_fall_through } case CC_DIGIT: { testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' ); testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' ); testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' ); - testcase( z[0]=='9' ); + testcase( z[0]=='9' ); testcase( z[0]=='.' ); *tokenType = TK_INTEGER; #ifndef SQLITE_OMIT_HEX_INTEGER if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){ @@ -146147,7 +175594,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ *tokenType = TK_FLOAT; } if( (z[i]=='e' || z[i]=='E') && - ( sqlite3Isdigit(z[i+1]) + ( sqlite3Isdigit(z[i+1]) || ((z[i+1]=='+' || z[i+1]=='-') && sqlite3Isdigit(z[i+2])) ) ){ @@ -146202,8 +175649,9 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ if( n==0 ) *tokenType = TK_ILLEGAL; return i; } - case CC_KYWD: { - for(i=1; aiClass[z[i]]<=CC_KYWD; i++){} + case CC_KYWD0: { + if( aiClass[z[1]]>CC_KYWD ){ i = 1; break; } + for(i=2; aiClass[z[i]]<=CC_KYWD; i++){} if( IdChar(z[i]) ){ /* This token started out using characters that can appear in keywords, ** but z[i] is a character not allowed within keywords, so this must @@ -146230,11 +175678,25 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ #endif /* If it is not a BLOB literal, then it must be an ID, since no ** SQL keywords start with the letter 'x'. Fall through */ + /* no break */ deliberate_fall_through } + case CC_KYWD: case CC_ID: { i = 1; break; } + case CC_BOM: { + if( z[1]==0xbb && z[2]==0xbf ){ + *tokenType = TK_SPACE; + return 3; + } + i = 1; + break; + } + case CC_NUL: { + *tokenType = TK_ILLEGAL; + return 0; + } default: { *tokenType = TK_ILLEGAL; return 1; @@ -146246,13 +175708,9 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ } /* -** Run the parser on the given SQL string. The parser structure is -** passed in. An SQLITE_ status code is returned. If an error occurs -** then an and attempt is made to write an error message into -** memory obtained from sqlite3_malloc() and to make *pzErrMsg point to that -** error message. +** Run the parser on the given SQL string. */ -SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){ +SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql){ int nErr = 0; /* Number of errors encountered */ void *pEngine; /* The LEMON-generated LALR(1) parser */ int n = 0; /* Length of the next token token */ @@ -146260,19 +175718,27 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr int lastTokenParsed = -1; /* type of the previous token */ sqlite3 *db = pParse->db; /* The database connection */ int mxSqlLen; /* Max length of an SQL string */ + Parse *pParentParse = 0; /* Outer parse context, if any */ #ifdef sqlite3Parser_ENGINEALWAYSONSTACK yyParser sEngine; /* Space to hold the Lemon-generated Parser object */ #endif + VVA_ONLY( u8 startedWithOom = db->mallocFailed ); assert( zSql!=0 ); mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH]; if( db->nVdbeActive==0 ){ - db->u1.isInterrupted = 0; + AtomicStore(&db->u1.isInterrupted, 0); } pParse->rc = SQLITE_OK; pParse->zTail = zSql; - assert( pzErrMsg!=0 ); - /* sqlite3ParserTrace(stdout, "parser: "); */ +#ifdef SQLITE_DEBUG + if( db->flags & SQLITE_ParserTrace ){ + printf("parser: [[[%s]]]\n", zSql); + sqlite3ParserTrace(stdout, "parser: "); + }else{ + sqlite3ParserTrace(0, 0); + } +#endif #ifdef sqlite3Parser_ENGINEALWAYSONSTACK pEngine = &sEngine; sqlite3ParserInit(pEngine, pParse); @@ -146287,48 +175753,73 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr assert( pParse->pNewTrigger==0 ); assert( pParse->nVar==0 ); assert( pParse->pVList==0 ); + pParentParse = db->pParse; + db->pParse = pParse; while( 1 ){ - if( zSql[0]!=0 ){ - n = sqlite3GetToken((u8*)zSql, &tokenType); - mxSqlLen -= n; - if( mxSqlLen<0 ){ - pParse->rc = SQLITE_TOOBIG; - break; - } - }else{ - /* Upon reaching the end of input, call the parser two more times - ** with tokens TK_SEMI and 0, in that order. */ - if( lastTokenParsed==TK_SEMI ){ - tokenType = 0; - }else if( lastTokenParsed==0 ){ - break; - }else{ - tokenType = TK_SEMI; - } - n = 0; + n = sqlite3GetToken((u8*)zSql, &tokenType); + mxSqlLen -= n; + if( mxSqlLen<0 ){ + pParse->rc = SQLITE_TOOBIG; + pParse->nErr++; + break; } +#ifndef SQLITE_OMIT_WINDOWFUNC + if( tokenType>=TK_WINDOW ){ + assert( tokenType==TK_SPACE || tokenType==TK_OVER || tokenType==TK_FILTER + || tokenType==TK_ILLEGAL || tokenType==TK_WINDOW + ); +#else if( tokenType>=TK_SPACE ){ assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL ); - if( db->u1.isInterrupted ){ +#endif /* SQLITE_OMIT_WINDOWFUNC */ + if( AtomicLoad(&db->u1.isInterrupted) ){ pParse->rc = SQLITE_INTERRUPT; + pParse->nErr++; break; } - if( tokenType==TK_ILLEGAL ){ - sqlite3ErrorMsg(pParse, "unrecognized token: \"%.*s\"", n, zSql); + if( tokenType==TK_SPACE ){ + zSql += n; + continue; + } + if( zSql[0]==0 ){ + /* Upon reaching the end of input, call the parser two more times + ** with tokens TK_SEMI and 0, in that order. */ + if( lastTokenParsed==TK_SEMI ){ + tokenType = 0; + }else if( lastTokenParsed==0 ){ + break; + }else{ + tokenType = TK_SEMI; + } + n = 0; +#ifndef SQLITE_OMIT_WINDOWFUNC + }else if( tokenType==TK_WINDOW ){ + assert( n==6 ); + tokenType = analyzeWindowKeyword((const u8*)&zSql[6]); + }else if( tokenType==TK_OVER ){ + assert( n==4 ); + tokenType = analyzeOverKeyword((const u8*)&zSql[4], lastTokenParsed); + }else if( tokenType==TK_FILTER ){ + assert( n==6 ); + tokenType = analyzeFilterKeyword((const u8*)&zSql[6], lastTokenParsed); +#endif /* SQLITE_OMIT_WINDOWFUNC */ + }else{ + Token x; + x.z = zSql; + x.n = n; + sqlite3ErrorMsg(pParse, "unrecognized token: \"%T\"", &x); break; } - zSql += n; - }else{ - pParse->sLastToken.z = zSql; - pParse->sLastToken.n = n; - sqlite3Parser(pEngine, tokenType, pParse->sLastToken); - lastTokenParsed = tokenType; - zSql += n; - if( pParse->rc!=SQLITE_OK || db->mallocFailed ) break; } + pParse->sLastToken.z = zSql; + pParse->sLastToken.n = n; + sqlite3Parser(pEngine, tokenType, pParse->sLastToken); + lastTokenParsed = tokenType; + zSql += n; + assert( db->mallocFailed==0 || pParse->rc!=SQLITE_OK || startedWithOom ); + if( pParse->rc!=SQLITE_OK ) break; } assert( nErr==0 ); - pParse->zTail = zSql; #ifdef YYTRACKMAXSTACKDEPTH sqlite3_mutex_enter(sqlite3MallocMutex()); sqlite3StatusHighwater(SQLITE_STATUS_PARSER_STACK, @@ -146344,56 +175835,169 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr if( db->mallocFailed ){ pParse->rc = SQLITE_NOMEM_BKPT; } - if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){ - pParse->zErrMsg = sqlite3MPrintf(db, "%s", sqlite3ErrStr(pParse->rc)); - } - assert( pzErrMsg!=0 ); - if( pParse->zErrMsg ){ - *pzErrMsg = pParse->zErrMsg; - sqlite3_log(pParse->rc, "%s", *pzErrMsg); - pParse->zErrMsg = 0; + if( pParse->zErrMsg || (pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE) ){ + if( pParse->zErrMsg==0 ){ + pParse->zErrMsg = sqlite3MPrintf(db, "%s", sqlite3ErrStr(pParse->rc)); + } + sqlite3_log(pParse->rc, "%s in \"%s\"", pParse->zErrMsg, pParse->zTail); nErr++; } - if( pParse->pVdbe && pParse->nErr>0 && pParse->nested==0 ){ - sqlite3VdbeDelete(pParse->pVdbe); - pParse->pVdbe = 0; - } -#ifndef SQLITE_OMIT_SHARED_CACHE - if( pParse->nested==0 ){ - sqlite3DbFree(db, pParse->aTableLock); - pParse->aTableLock = 0; - pParse->nTableLock = 0; - } -#endif + pParse->zTail = zSql; #ifndef SQLITE_OMIT_VIRTUALTABLE sqlite3_free(pParse->apVtabLock); #endif - if( !IN_DECLARE_VTAB ){ - /* If the pParse->declareVtab flag is set, do not delete any table + if( pParse->pNewTable && !IN_SPECIAL_PARSE ){ + /* If the pParse->declareVtab flag is set, do not delete any table ** structure built up in pParse->pNewTable. The calling code (see vtab.c) ** will take responsibility for freeing the Table structure. */ sqlite3DeleteTable(db, pParse->pNewTable); } - - if( pParse->pWithToFree ) sqlite3WithDelete(db, pParse->pWithToFree); - sqlite3DeleteTrigger(db, pParse->pNewTrigger); - sqlite3DbFree(db, pParse->pVList); - while( pParse->pAinc ){ - AutoincInfo *p = pParse->pAinc; - pParse->pAinc = p->pNext; - sqlite3DbFreeNN(db, p); - } - while( pParse->pZombieTab ){ - Table *p = pParse->pZombieTab; - pParse->pZombieTab = p->pNextZombie; - sqlite3DeleteTable(db, p); + if( pParse->pNewTrigger && !IN_RENAME_OBJECT ){ + sqlite3DeleteTrigger(db, pParse->pNewTrigger); } + if( pParse->pVList ) sqlite3DbNNFreeNN(db, pParse->pVList); + db->pParse = pParentParse; assert( nErr==0 || pParse->rc!=SQLITE_OK ); return nErr; } + +#ifdef SQLITE_ENABLE_NORMALIZE +/* +** Insert a single space character into pStr if the current string +** ends with an identifier +*/ +static void addSpaceSeparator(sqlite3_str *pStr){ + if( pStr->nChar && sqlite3IsIdChar(pStr->zText[pStr->nChar-1]) ){ + sqlite3_str_append(pStr, " ", 1); + } +} + +/* +** Compute a normalization of the SQL given by zSql[0..nSql-1]. Return +** the normalization in space obtained from sqlite3DbMalloc(). Or return +** NULL if anything goes wrong or if zSql is NULL. +*/ +SQLITE_PRIVATE char *sqlite3Normalize( + Vdbe *pVdbe, /* VM being reprepared */ + const char *zSql /* The original SQL string */ +){ + sqlite3 *db; /* The database connection */ + int i; /* Next unread byte of zSql[] */ + int n; /* length of current token */ + int tokenType; /* type of current token */ + int prevType = 0; /* Previous non-whitespace token */ + int nParen; /* Number of nested levels of parentheses */ + int iStartIN; /* Start of RHS of IN operator in z[] */ + int nParenAtIN; /* Value of nParent at start of RHS of IN operator */ + u32 j; /* Bytes of normalized SQL generated so far */ + sqlite3_str *pStr; /* The normalized SQL string under construction */ + + db = sqlite3VdbeDb(pVdbe); + tokenType = -1; + nParen = iStartIN = nParenAtIN = 0; + pStr = sqlite3_str_new(db); + assert( pStr!=0 ); /* sqlite3_str_new() never returns NULL */ + for(i=0; zSql[i] && pStr->accError==0; i+=n){ + if( tokenType!=TK_SPACE ){ + prevType = tokenType; + } + n = sqlite3GetToken((unsigned char*)zSql+i, &tokenType); + if( NEVER(n<=0) ) break; + switch( tokenType ){ + case TK_SPACE: { + break; + } + case TK_NULL: { + if( prevType==TK_IS || prevType==TK_NOT ){ + sqlite3_str_append(pStr, " NULL", 5); + break; + } + /* Fall through */ + } + case TK_STRING: + case TK_INTEGER: + case TK_FLOAT: + case TK_VARIABLE: + case TK_BLOB: { + sqlite3_str_append(pStr, "?", 1); + break; + } + case TK_LP: { + nParen++; + if( prevType==TK_IN ){ + iStartIN = pStr->nChar; + nParenAtIN = nParen; + } + sqlite3_str_append(pStr, "(", 1); + break; + } + case TK_RP: { + if( iStartIN>0 && nParen==nParenAtIN ){ + assert( pStr->nChar>=(u32)iStartIN ); + pStr->nChar = iStartIN+1; + sqlite3_str_append(pStr, "?,?,?", 5); + iStartIN = 0; + } + nParen--; + sqlite3_str_append(pStr, ")", 1); + break; + } + case TK_ID: { + iStartIN = 0; + j = pStr->nChar; + if( sqlite3Isquote(zSql[i]) ){ + char *zId = sqlite3DbStrNDup(db, zSql+i, n); + int nId; + int eType = 0; + if( zId==0 ) break; + sqlite3Dequote(zId); + if( zSql[i]=='"' && sqlite3VdbeUsesDoubleQuotedString(pVdbe, zId) ){ + sqlite3_str_append(pStr, "?", 1); + sqlite3DbFree(db, zId); + break; + } + nId = sqlite3Strlen30(zId); + if( sqlite3GetToken((u8*)zId, &eType)==nId && eType==TK_ID ){ + addSpaceSeparator(pStr); + sqlite3_str_append(pStr, zId, nId); + }else{ + sqlite3_str_appendf(pStr, "\"%w\"", zId); + } + sqlite3DbFree(db, zId); + }else{ + addSpaceSeparator(pStr); + sqlite3_str_append(pStr, zSql+i, n); + } + while( jnChar ){ + pStr->zText[j] = sqlite3Tolower(pStr->zText[j]); + j++; + } + break; + } + case TK_SELECT: { + iStartIN = 0; + /* fall through */ + } + default: { + if( sqlite3IsIdChar(zSql[i]) ) addSpaceSeparator(pStr); + j = pStr->nChar; + sqlite3_str_append(pStr, zSql+i, n); + while( jnChar ){ + pStr->zText[j] = sqlite3Toupper(pStr->zText[j]); + j++; + } + break; + } + } + } + if( tokenType!=TK_SEMI ) sqlite3_str_append(pStr, ";", 1); + return sqlite3_str_finish(pStr); +} +#endif /* SQLITE_ENABLE_NORMALIZE */ + /************** End of tokenize.c ********************************************/ /************** Begin file complete.c ****************************************/ /* @@ -146464,7 +176068,7 @@ SQLITE_PRIVATE const char sqlite3IsEbcdicIdChar[]; ** (2) NORMAL We are in the middle of statement which ends with a single ** semicolon. ** -** (3) EXPLAIN The keyword EXPLAIN has been seen at the beginning of +** (3) EXPLAIN The keyword EXPLAIN has been seen at the beginning of ** a statement. ** ** (4) CREATE The keyword CREATE has been seen at the beginning of a @@ -146807,29 +176411,76 @@ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db); } /* extern "C" */ #endif /* __cplusplus */ - /************** End of sqliteicu.h *******************************************/ /************** Continuing where we left off in main.c ***********************/ #endif -#ifdef SQLITE_ENABLE_JSON1 -SQLITE_PRIVATE int sqlite3Json1Init(sqlite3*); + +/* +** This is an extension initializer that is a no-op and always +** succeeds, except that it fails if the fault-simulation is set +** to 500. +*/ +static int sqlite3TestExtInit(sqlite3 *db){ + (void)db; + return sqlite3FaultSim(500); +} + + +/* +** Forward declarations of external module initializer functions +** for modules that need them. +*/ +#ifdef SQLITE_ENABLE_FTS5 +SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*); #endif #ifdef SQLITE_ENABLE_STMTVTAB SQLITE_PRIVATE int sqlite3StmtVtabInit(sqlite3*); #endif -#ifdef SQLITE_ENABLE_FTS5 -SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*); + +/* +** An array of pointers to extension initializer functions for +** built-in extensions. +*/ +static int (*const sqlite3BuiltinExtensions[])(sqlite3*) = { +#ifdef SQLITE_ENABLE_FTS3 + sqlite3Fts3Init, #endif +#ifdef SQLITE_ENABLE_FTS5 + sqlite3Fts5Init, +#endif +#if defined(SQLITE_ENABLE_ICU) || defined(SQLITE_ENABLE_ICU_COLLATIONS) + sqlite3IcuInit, +#endif +#ifdef SQLITE_ENABLE_RTREE + sqlite3RtreeInit, +#endif +#ifdef SQLITE_ENABLE_DBPAGE_VTAB + sqlite3DbpageRegister, +#endif +#ifdef SQLITE_ENABLE_DBSTAT_VTAB + sqlite3DbstatRegister, +#endif + sqlite3TestExtInit, +#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_JSON) + sqlite3JsonTableFunctions, +#endif +#ifdef SQLITE_ENABLE_STMTVTAB + sqlite3StmtVtabInit, +#endif +#ifdef SQLITE_ENABLE_BYTECODE_VTAB + sqlite3VdbeBytecodeVtabInit, +#endif +}; #ifndef SQLITE_AMALGAMATION /* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant -** contains the text of SQLITE_VERSION macro. +** contains the text of SQLITE_VERSION macro. */ SQLITE_API const char sqlite3_version[] = SQLITE_VERSION; #endif /* IMPLEMENTATION-OF: R-53536-42575 The sqlite3_libversion() function returns -** a pointer to the to the sqlite3_version[] string constant. +** a pointer to the to the sqlite3_version[] string constant. */ SQLITE_API const char *sqlite3_libversion(void){ return sqlite3_version; } @@ -146893,13 +176544,13 @@ SQLITE_API char *sqlite3_temp_directory = 0; SQLITE_API char *sqlite3_data_directory = 0; /* -** Initialize SQLite. +** Initialize SQLite. ** ** This routine must be called to initialize the memory allocation, ** VFS, and mutex subsystems prior to doing any serious work with ** SQLite. But as long as you do not compile with SQLITE_OMIT_AUTOINIT ** this routine will be called automatically by key routines such as -** sqlite3_open(). +** sqlite3_open(). ** ** This routine is a no-op except on its very first call for the process, ** or for the first call after a call to sqlite3_shutdown. @@ -146924,7 +176575,7 @@ SQLITE_API char *sqlite3_data_directory = 0; ** without blocking. */ SQLITE_API int sqlite3_initialize(void){ - MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */ + MUTEX_LOGIC( sqlite3_mutex *pMainMtx; ) /* The main static mutex */ int rc; /* Result code */ #ifdef SQLITE_EXTRA_INIT int bRunExtraInit = 0; /* Extra initialization needed */ @@ -146947,9 +176598,12 @@ SQLITE_API int sqlite3_initialize(void){ ** must be complete. So isInit must not be set until the very end ** of this routine. */ - if( sqlite3GlobalConfig.isInit ) return SQLITE_OK; + if( sqlite3GlobalConfig.isInit ){ + sqlite3MemoryBarrier(); + return SQLITE_OK; + } - /* Make sure the mutex subsystem is initialized. If unable to + /* Make sure the mutex subsystem is initialized. If unable to ** initialize the mutex subsystem, return early with the error. ** If the system is so sick that we are unable to allocate a mutex, ** there is not much SQLite is going to be able to do. @@ -146961,13 +176615,13 @@ SQLITE_API int sqlite3_initialize(void){ if( rc ) return rc; /* Initialize the malloc() system and the recursive pInitMutex mutex. - ** This operation is protected by the STATIC_MASTER mutex. Note that + ** This operation is protected by the STATIC_MAIN mutex. Note that ** MutexAlloc() is called for a static mutex prior to initializing the ** malloc subsystem - this implies that the allocation of a static ** mutex must not require support from the malloc subsystem. */ - MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) - sqlite3_mutex_enter(pMaster); + MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); ) + sqlite3_mutex_enter(pMainMtx); sqlite3GlobalConfig.isMutexInit = 1; if( !sqlite3GlobalConfig.isMallocInit ){ rc = sqlite3MallocInit(); @@ -146985,7 +176639,7 @@ SQLITE_API int sqlite3_initialize(void){ if( rc==SQLITE_OK ){ sqlite3GlobalConfig.nRefInitMutex++; } - sqlite3_mutex_leave(pMaster); + sqlite3_mutex_leave(pMainMtx); /* If rc is not SQLITE_OK at this point, then either the malloc ** subsystem could not be initialized or the system failed to allocate @@ -147025,14 +176679,15 @@ SQLITE_API int sqlite3_initialize(void){ sqlite3GlobalConfig.isPCacheInit = 1; rc = sqlite3OsInit(); } -#ifdef SQLITE_ENABLE_DESERIALIZE +#ifndef SQLITE_OMIT_DESERIALIZE if( rc==SQLITE_OK ){ rc = sqlite3MemdbInit(); } #endif if( rc==SQLITE_OK ){ - sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, + sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage); + sqlite3MemoryBarrier(); sqlite3GlobalConfig.isInit = 1; #ifdef SQLITE_EXTRA_INIT bRunExtraInit = 1; @@ -147045,14 +176700,14 @@ SQLITE_API int sqlite3_initialize(void){ /* Go back under the static mutex and clean up the recursive ** mutex to prevent a resource leak. */ - sqlite3_mutex_enter(pMaster); + sqlite3_mutex_enter(pMainMtx); sqlite3GlobalConfig.nRefInitMutex--; if( sqlite3GlobalConfig.nRefInitMutex<=0 ){ assert( sqlite3GlobalConfig.nRefInitMutex==0 ); sqlite3_mutex_free(sqlite3GlobalConfig.pInitMutex); sqlite3GlobalConfig.pInitMutex = 0; } - sqlite3_mutex_leave(pMaster); + sqlite3_mutex_leave(pMainMtx); /* The following is just a sanity check to make sure SQLite has ** been compiled correctly. It is important to run this code, but @@ -147152,9 +176807,21 @@ SQLITE_API int sqlite3_config(int op, ...){ va_list ap; int rc = SQLITE_OK; - /* sqlite3_config() shall return SQLITE_MISUSE if it is invoked while - ** the SQLite library is in use. */ - if( sqlite3GlobalConfig.isInit ) return SQLITE_MISUSE_BKPT; + /* sqlite3_config() normally returns SQLITE_MISUSE if it is invoked while + ** the SQLite library is in use. Except, a few selected opcodes + ** are allowed. + */ + if( sqlite3GlobalConfig.isInit ){ + static const u64 mAnytimeConfigOption = 0 + | MASKBIT64( SQLITE_CONFIG_LOG ) + | MASKBIT64( SQLITE_CONFIG_PCACHE_HDRSZ ) + ; + if( op<0 || op>63 || (MASKBIT64(op) & mAnytimeConfigOption)==0 ){ + return SQLITE_MISUSE_BKPT; + } + testcase( op==SQLITE_CONFIG_LOG ); + testcase( op==SQLITE_CONFIG_PCACHE_HDRSZ ); + } va_start(ap, op); switch( op ){ @@ -147223,6 +176890,7 @@ SQLITE_API int sqlite3_config(int op, ...){ break; } case SQLITE_CONFIG_MEMSTATUS: { + assert( !sqlite3GlobalConfig.isInit ); /* Cannot change at runtime */ /* EVIDENCE-OF: R-61275-35157 The SQLITE_CONFIG_MEMSTATUS option takes ** single argument of type int, interpreted as a boolean, which enables ** or disables the collection of memory allocation statistics. */ @@ -147248,7 +176916,7 @@ SQLITE_API int sqlite3_config(int op, ...){ ** a single parameter which is a pointer to an integer and writes into ** that integer the number of extra bytes per page required for each page ** in SQLITE_CONFIG_PAGECACHE. */ - *va_arg(ap, int*) = + *va_arg(ap, int*) = sqlite3HeaderSizeBtree() + sqlite3HeaderSizePcache() + sqlite3HeaderSizePcache1(); @@ -147335,7 +177003,7 @@ SQLITE_API int sqlite3_config(int op, ...){ sqlite3GlobalConfig.nLookaside = va_arg(ap, int); break; } - + /* Record a pointer to the logger function and its first argument. ** The default is NULL. Logging is disabled if the function pointer is ** NULL. @@ -147346,8 +177014,10 @@ SQLITE_API int sqlite3_config(int op, ...){ ** sqlite3GlobalConfig.xLog = va_arg(ap, void(*)(void*,int,const char*)); */ typedef void(*LOGFUNC_t)(void*,int,const char*); - sqlite3GlobalConfig.xLog = va_arg(ap, LOGFUNC_t); - sqlite3GlobalConfig.pLogArg = va_arg(ap, void*); + LOGFUNC_t xLog = va_arg(ap, LOGFUNC_t); + void *pLogArg = va_arg(ap, void*); + AtomicStore(&sqlite3GlobalConfig.xLog, xLog); + AtomicStore(&sqlite3GlobalConfig.pLogArg, pLogArg); break; } @@ -147361,7 +177031,8 @@ SQLITE_API int sqlite3_config(int op, ...){ ** argument of type int. If non-zero, then URI handling is globally ** enabled. If the parameter is zero, then URI handling is globally ** disabled. */ - sqlite3GlobalConfig.bOpenUri = va_arg(ap, int); + int bOpenUri = va_arg(ap, int); + AtomicStore(&sqlite3GlobalConfig.bOpenUri, bOpenUri); break; } @@ -147439,6 +177110,13 @@ SQLITE_API int sqlite3_config(int op, ...){ } #endif /* SQLITE_ENABLE_SORTER_REFERENCES */ +#ifndef SQLITE_OMIT_DESERIALIZE + case SQLITE_CONFIG_MEMDB_MAXSIZE: { + sqlite3GlobalConfig.mxMemdbSize = va_arg(ap, sqlite3_int64); + break; + } +#endif /* SQLITE_OMIT_DESERIALIZE */ + default: { rc = SQLITE_ERROR; break; @@ -147450,7 +177128,7 @@ SQLITE_API int sqlite3_config(int op, ...){ /* ** Set up the lookaside buffers for a database connection. -** Return SQLITE_OK on success. +** Return SQLITE_OK on success. ** If lookaside is already active, return SQLITE_BUSY. ** ** The sz parameter is the number of bytes in each lookaside slot. @@ -147462,12 +177140,15 @@ SQLITE_API int sqlite3_config(int op, ...){ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ #ifndef SQLITE_OMIT_LOOKASIDE void *pStart; - + sqlite3_int64 szAlloc = sz*(sqlite3_int64)cnt; + int nBig; /* Number of full-size slots */ + int nSm; /* Number smaller LOOKASIDE_SMALL-byte slots */ + if( sqlite3LookasideUsed(db,0)>0 ){ return SQLITE_BUSY; } /* Free any existing lookaside buffer for this handle before - ** allocating a new one so we don't have to have space for + ** allocating a new one so we don't have to have space for ** both at the same time. */ if( db->lookaside.bMalloced ){ @@ -147484,37 +177165,72 @@ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ pStart = 0; }else if( pBuf==0 ){ sqlite3BeginBenignMalloc(); - pStart = sqlite3Malloc( sz*cnt ); /* IMP: R-61949-35727 */ + pStart = sqlite3Malloc( szAlloc ); /* IMP: R-61949-35727 */ sqlite3EndBenignMalloc(); - if( pStart ) cnt = sqlite3MallocSize(pStart)/sz; + if( pStart ) szAlloc = sqlite3MallocSize(pStart); }else{ pStart = pBuf; } +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + if( sz>=LOOKASIDE_SMALL*3 ){ + nBig = szAlloc/(3*LOOKASIDE_SMALL+sz); + nSm = (szAlloc - sz*nBig)/LOOKASIDE_SMALL; + }else if( sz>=LOOKASIDE_SMALL*2 ){ + nBig = szAlloc/(LOOKASIDE_SMALL+sz); + nSm = (szAlloc - sz*nBig)/LOOKASIDE_SMALL; + }else +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ + if( sz>0 ){ + nBig = szAlloc/sz; + nSm = 0; + }else{ + nBig = nSm = 0; + } db->lookaside.pStart = pStart; db->lookaside.pInit = 0; db->lookaside.pFree = 0; db->lookaside.sz = (u16)sz; + db->lookaside.szTrue = (u16)sz; if( pStart ){ int i; LookasideSlot *p; assert( sz > (int)sizeof(LookasideSlot*) ); - db->lookaside.nSlot = cnt; p = (LookasideSlot*)pStart; - for(i=cnt-1; i>=0; i--){ + for(i=0; ipNext = db->lookaside.pInit; db->lookaside.pInit = p; p = (LookasideSlot*)&((u8*)p)[sz]; } +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + db->lookaside.pSmallInit = 0; + db->lookaside.pSmallFree = 0; + db->lookaside.pMiddle = p; + for(i=0; ipNext = db->lookaside.pSmallInit; + db->lookaside.pSmallInit = p; + p = (LookasideSlot*)&((u8*)p)[LOOKASIDE_SMALL]; + } +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ + assert( ((uptr)p)<=szAlloc + (uptr)pStart ); db->lookaside.pEnd = p; db->lookaside.bDisable = 0; db->lookaside.bMalloced = pBuf==0 ?1:0; + db->lookaside.nSlot = nBig+nSm; }else{ - db->lookaside.pStart = db; - db->lookaside.pEnd = db; + db->lookaside.pStart = 0; +#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE + db->lookaside.pSmallInit = 0; + db->lookaside.pSmallFree = 0; + db->lookaside.pMiddle = 0; +#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ + db->lookaside.pEnd = 0; db->lookaside.bDisable = 1; + db->lookaside.sz = 0; db->lookaside.bMalloced = 0; db->lookaside.nSlot = 0; } + db->lookaside.pTrueEnd = db->lookaside.pEnd; + assert( sqlite3LookasideUsed(db,0)==0 ); #endif /* SQLITE_OMIT_LOOKASIDE */ return SQLITE_OK; } @@ -147572,7 +177288,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3 *db){ sqlite3BtreeEnterAll(db); for(i=0; rc==SQLITE_OK && inDb; i++){ Btree *pBt = db->aDb[i].pBt; - if( pBt && sqlite3BtreeIsInTrans(pBt) ){ + if( pBt && sqlite3BtreeTxnState(pBt)==SQLITE_TXN_WRITE ){ Pager *pPager = sqlite3BtreePager(pBt); rc = sqlite3PagerFlush(pPager); if( rc==SQLITE_BUSY ){ @@ -147592,6 +177308,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3 *db){ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ va_list ap; int rc; + sqlite3_mutex_enter(db->mutex); va_start(ap, op); switch( op ){ case SQLITE_DBCONFIG_MAINDBNAME: { @@ -147615,12 +177332,23 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ } aFlagOp[] = { { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys }, { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger }, + { SQLITE_DBCONFIG_ENABLE_VIEW, SQLITE_EnableView }, { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer }, { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension }, { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE, SQLITE_NoCkptOnClose }, { SQLITE_DBCONFIG_ENABLE_QPSG, SQLITE_EnableQPSG }, { SQLITE_DBCONFIG_TRIGGER_EQP, SQLITE_TriggerEQP }, { SQLITE_DBCONFIG_RESET_DATABASE, SQLITE_ResetDatabase }, + { SQLITE_DBCONFIG_DEFENSIVE, SQLITE_Defensive }, + { SQLITE_DBCONFIG_WRITABLE_SCHEMA, SQLITE_WriteSchema| + SQLITE_NoSchemaError }, + { SQLITE_DBCONFIG_LEGACY_ALTER_TABLE, SQLITE_LegacyAlter }, + { SQLITE_DBCONFIG_DQS_DDL, SQLITE_DqsDDL }, + { SQLITE_DBCONFIG_DQS_DML, SQLITE_DqsDML }, + { SQLITE_DBCONFIG_LEGACY_FILE_FORMAT, SQLITE_LegacyFileFmt }, + { SQLITE_DBCONFIG_TRUSTED_SCHEMA, SQLITE_TrustedSchema }, + { SQLITE_DBCONFIG_STMT_SCANSTATUS, SQLITE_StmtScanStatus }, + { SQLITE_DBCONFIG_REVERSE_SCANORDER, SQLITE_ReverseOrder }, }; unsigned int i; rc = SQLITE_ERROR; /* IMP: R-42790-23372 */ @@ -147628,14 +177356,14 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ if( aFlagOp[i].op==op ){ int onoff = va_arg(ap, int); int *pRes = va_arg(ap, int*); - u32 oldFlags = db->flags; + u64 oldFlags = db->flags; if( onoff>0 ){ db->flags |= aFlagOp[i].mask; }else if( onoff==0 ){ - db->flags &= ~aFlagOp[i].mask; + db->flags &= ~(u64)aFlagOp[i].mask; } if( oldFlags!=db->flags ){ - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, 0); } if( pRes ){ *pRes = (db->flags & aFlagOp[i].mask)!=0; @@ -147648,31 +177376,21 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ } } va_end(ap); + sqlite3_mutex_leave(db->mutex); return rc; } - -/* -** Return true if the buffer z[0..n-1] contains all spaces. -*/ -static int allSpaces(const char *z, int n){ - while( n>0 && z[n-1]==' ' ){ n--; } - return n==0; -} - /* ** This is the default collating function named "BINARY" which is always ** available. -** -** If the padFlag argument is not NULL then space padding at the end -** of strings is ignored. This implements the RTRIM collation. */ static int binCollFunc( - void *padFlag, + void *NotUsed, int nKey1, const void *pKey1, int nKey2, const void *pKey2 ){ int rc, n; + UNUSED_PARAMETER(NotUsed); n = nKey1xCmp!=binCollFunc || strcmp(p->zName,"BINARY")==0 ); + return p==0 || p->xCmp==binCollFunc; +} + +/* +** Another built-in collating sequence: NOCASE. ** ** This collating sequence is intended to be used for "case independent ** comparison". SQLite's knowledge of upper and lower case equivalents @@ -147750,7 +177481,7 @@ SQLITE_API void sqlite3_set_last_insert_rowid(sqlite3 *db, sqlite3_int64 iRowid) /* ** Return the number of changes in the most recent call to sqlite3_exec(). */ -SQLITE_API int sqlite3_changes(sqlite3 *db){ +SQLITE_API sqlite3_int64 sqlite3_changes64(sqlite3 *db){ #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ){ (void)SQLITE_MISUSE_BKPT; @@ -147759,11 +177490,14 @@ SQLITE_API int sqlite3_changes(sqlite3 *db){ #endif return db->nChange; } +SQLITE_API int sqlite3_changes(sqlite3 *db){ + return (int)sqlite3_changes64(db); +} /* ** Return the number of changes since the database handle was opened. */ -SQLITE_API int sqlite3_total_changes(sqlite3 *db){ +SQLITE_API sqlite3_int64 sqlite3_total_changes64(sqlite3 *db){ #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ){ (void)SQLITE_MISUSE_BKPT; @@ -147772,6 +177506,9 @@ SQLITE_API int sqlite3_total_changes(sqlite3 *db){ #endif return db->nTotalChange; } +SQLITE_API int sqlite3_total_changes(sqlite3 *db){ + return (int)sqlite3_total_changes64(db); +} /* ** Close all open savepoints. This function only manipulates fields of the @@ -147796,7 +177533,9 @@ SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *db){ ** with SQLITE_ANY as the encoding. */ static void functionDestroy(sqlite3 *db, FuncDef *p){ - FuncDestructor *pDestructor = p->u.pDestructor; + FuncDestructor *pDestructor; + assert( (p->funcFlags & SQLITE_FUNC_BUILTIN)==0 ); + pDestructor = p->u.pDestructor; if( pDestructor ){ pDestructor->nRef--; if( pDestructor->nRef==0 ){ @@ -147817,7 +177556,7 @@ static void disconnectAllVtab(sqlite3 *db){ sqlite3BtreeEnterAll(db); for(i=0; inDb; i++){ Schema *pSchema = db->aDb[i].pSchema; - if( db->aDb[i].pSchema ){ + if( pSchema ){ for(p=sqliteHashFirst(&pSchema->tblHash); p; p=sqliteHashNext(p)){ Table *pTab = (Table *)sqliteHashData(p); if( IsVirtual(pTab) ) sqlite3VtabDisconnect(db, pTab); @@ -147839,7 +177578,7 @@ static void disconnectAllVtab(sqlite3 *db){ /* ** Return TRUE if database connection db has unfinalized prepared -** statements or unfinished sqlite3_backup objects. +** statements or unfinished sqlite3_backup objects. */ static int connectionIsBusy(sqlite3 *db){ int j; @@ -147866,7 +177605,7 @@ static int sqlite3Close(sqlite3 *db, int forceZombie){ } sqlite3_mutex_enter(db->mutex); if( db->mTrace & SQLITE_TRACE_CLOSE ){ - db->xTrace(SQLITE_TRACE_CLOSE, db->pTraceArg, db, 0); + db->trace.xV2(SQLITE_TRACE_CLOSE, db->pTraceArg, db, 0); } /* Force xDisconnect calls on all virtual tables */ @@ -147900,15 +177639,45 @@ static int sqlite3Close(sqlite3 *db, int forceZombie){ /* Convert the connection into a zombie and then close it. */ - db->magic = SQLITE_MAGIC_ZOMBIE; + db->eOpenState = SQLITE_STATE_ZOMBIE; sqlite3LeaveMutexAndCloseZombie(db); return SQLITE_OK; } +/* +** Return the transaction state for a single databse, or the maximum +** transaction state over all attached databases if zSchema is null. +*/ +SQLITE_API int sqlite3_txn_state(sqlite3 *db, const char *zSchema){ + int iDb, nDb; + int iTxn = -1; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return -1; + } +#endif + sqlite3_mutex_enter(db->mutex); + if( zSchema ){ + nDb = iDb = sqlite3FindDbName(db, zSchema); + if( iDb<0 ) nDb--; + }else{ + iDb = 0; + nDb = db->nDb-1; + } + for(; iDb<=nDb; iDb++){ + Btree *pBt = db->aDb[iDb].pBt; + int x = pBt!=0 ? sqlite3BtreeTxnState(pBt) : SQLITE_TXN_NONE; + if( x>iTxn ) iTxn = x; + } + sqlite3_mutex_leave(db->mutex); + return iTxn; +} + /* ** Two variations on the public interface for closing a database ** connection. The sqlite3_close() version returns SQLITE_BUSY and -** leaves the connection option if there are unfinalized prepared +** leaves the connection open if there are unfinalized prepared ** statements or unfinished sqlite3_backups. The sqlite3_close_v2() ** version forces the connection to become a zombie if there are ** unclosed resources, and arranges for deallocation when the last @@ -147934,7 +177703,7 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ ** or if the connection has not yet been closed by sqlite3_close_v2(), ** then just leave the mutex and return. */ - if( db->magic!=SQLITE_MAGIC_ZOMBIE || connectionIsBusy(db) ){ + if( db->eOpenState!=SQLITE_STATE_ZOMBIE || connectionIsBusy(db) ){ sqlite3_mutex_leave(db->mutex); return; } @@ -148006,11 +177775,8 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ #ifndef SQLITE_OMIT_VIRTUALTABLE for(i=sqliteHashFirst(&db->aModule); i; i=sqliteHashNext(i)){ Module *pMod = (Module *)sqliteHashData(i); - if( pMod->xDestroy ){ - pMod->xDestroy(pMod->pAux); - } sqlite3VtabEponymousTableClear(db, pMod); - sqlite3DbFree(db, pMod); + sqlite3VtabModuleUnref(db, pMod); } sqlite3HashClear(&db->aModule); #endif @@ -148023,17 +177789,20 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ sqlite3_free(db->auth.zAuthPW); #endif - db->magic = SQLITE_MAGIC_ERROR; + db->eOpenState = SQLITE_STATE_ERROR; /* The temp-database schema is allocated differently from the other schema ** objects (using sqliteMalloc() directly, instead of sqlite3BtreeSchema()). ** So it needs to be freed here. Todo: Why not roll the temp schema into - ** the same sqliteMalloc() as the one that allocates the database + ** the same sqliteMalloc() as the one that allocates the database ** structure? */ sqlite3DbFree(db, db->aDb[1].pSchema); + if( db->xAutovacDestr ){ + db->xAutovacDestr(db->pAutovacPagesArg); + } sqlite3_mutex_leave(db->mutex); - db->magic = SQLITE_MAGIC_CLOSED; + db->eOpenState = SQLITE_STATE_CLOSED; sqlite3_mutex_free(db->mutex); assert( sqlite3LookasideUsed(db,0)==0 ); if( db->lookaside.bMalloced ){ @@ -148056,7 +177825,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ assert( sqlite3_mutex_held(db->mutex) ); sqlite3BeginBenignMalloc(); - /* Obtain all b-tree mutexes before making any calls to BtreeRollback(). + /* Obtain all b-tree mutexes before making any calls to BtreeRollback(). ** This is important in case the transaction being rolled back has ** modified the database schema. If the b-tree mutexes are not taken ** here, then another shared-cache connection might sneak in between @@ -148068,7 +177837,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ for(i=0; inDb; i++){ Btree *p = db->aDb[i].pBt; if( p ){ - if( sqlite3BtreeIsInTrans(p) ){ + if( sqlite3BtreeTxnState(p)==SQLITE_TXN_WRITE ){ inTrans = 1; } sqlite3BtreeRollback(p, tripCode, !schemaChange); @@ -148077,8 +177846,8 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ sqlite3VtabRollback(db); sqlite3EndBenignMalloc(); - if( (db->mDbFlags&DBFLAG_SchemaChange)!=0 && db->init.busy==0 ){ - sqlite3ExpirePreparedStatements(db); + if( schemaChange ){ + sqlite3ExpirePreparedStatements(db, 0); sqlite3ResetAllSchemasOfConnection(db); } sqlite3BtreeLeaveAll(db); @@ -148086,7 +177855,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ /* Any deferred constraint violations have now been resolved. */ db->nDeferredCons = 0; db->nDeferredImmCons = 0; - db->flags &= ~SQLITE_DeferFKs; + db->flags &= ~(u64)(SQLITE_DeferFKs|SQLITE_CorruptRdOnly); /* If one has been configured, invoke the rollback-hook callback */ if( db->xRollbackCallback && (inTrans || !db->autoCommit) ){ @@ -148106,6 +177875,7 @@ SQLITE_PRIVATE const char *sqlite3ErrName(int rc){ switch( rc ){ case SQLITE_OK: zName = "SQLITE_OK"; break; case SQLITE_ERROR: zName = "SQLITE_ERROR"; break; + case SQLITE_ERROR_SNAPSHOT: zName = "SQLITE_ERROR_SNAPSHOT"; break; case SQLITE_INTERNAL: zName = "SQLITE_INTERNAL"; break; case SQLITE_PERM: zName = "SQLITE_PERM"; break; case SQLITE_ABORT: zName = "SQLITE_ABORT"; break; @@ -148159,6 +177929,7 @@ SQLITE_PRIVATE const char *sqlite3ErrName(int rc){ case SQLITE_CANTOPEN_ISDIR: zName = "SQLITE_CANTOPEN_ISDIR"; break; case SQLITE_CANTOPEN_FULLPATH: zName = "SQLITE_CANTOPEN_FULLPATH"; break; case SQLITE_CANTOPEN_CONVPATH: zName = "SQLITE_CANTOPEN_CONVPATH"; break; + case SQLITE_CANTOPEN_SYMLINK: zName = "SQLITE_CANTOPEN_SYMLINK"; break; case SQLITE_PROTOCOL: zName = "SQLITE_PROTOCOL"; break; case SQLITE_EMPTY: zName = "SQLITE_EMPTY"; break; case SQLITE_SCHEMA: zName = "SQLITE_SCHEMA"; break; @@ -148190,6 +177961,7 @@ SQLITE_PRIVATE const char *sqlite3ErrName(int rc){ case SQLITE_NOTICE_RECOVER_WAL: zName = "SQLITE_NOTICE_RECOVER_WAL";break; case SQLITE_NOTICE_RECOVER_ROLLBACK: zName = "SQLITE_NOTICE_RECOVER_ROLLBACK"; break; + case SQLITE_NOTICE_RBU: zName = "SQLITE_NOTICE_RBU"; break; case SQLITE_WARNING: zName = "SQLITE_WARNING"; break; case SQLITE_WARNING_AUTOINDEX: zName = "SQLITE_WARNING_AUTOINDEX"; break; case SQLITE_DONE: zName = "SQLITE_DONE"; break; @@ -148280,12 +178052,11 @@ SQLITE_PRIVATE const char *sqlite3ErrStr(int rc){ */ static int sqliteDefaultBusyCallback( void *ptr, /* Database connection */ - int count, /* Number of times table has been busy */ - sqlite3_file *pFile /* The file on which the lock occurred */ + int count /* Number of times table has been busy */ ){ -#if SQLITE_OS_WIN || HAVE_USLEEP +#if SQLITE_OS_WIN || !defined(HAVE_NANOSLEEP) || HAVE_NANOSLEEP /* This case is for systems that have support for sleeping for fractions of - ** a second. Examples: All windows systems, unix systems with usleep() */ + ** a second. Examples: All windows systems, unix systems with nanosleep() */ static const u8 delays[] = { 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 }; static const u8 totals[] = @@ -148295,19 +178066,6 @@ static int sqliteDefaultBusyCallback( int tmout = db->busyTimeout; int delay, prior; -#ifdef SQLITE_ENABLE_SETLK_TIMEOUT - if( sqlite3OsFileControl(pFile,SQLITE_FCNTL_LOCK_TIMEOUT,&tmout)==SQLITE_OK ){ - if( count ){ - tmout = 0; - sqlite3OsFileControl(pFile, SQLITE_FCNTL_LOCK_TIMEOUT, &tmout); - return 0; - }else{ - return 1; - } - } -#else - UNUSED_PARAMETER(pFile); -#endif assert( count>=0 ); if( count < NDELAY ){ delay = delays[count]; @@ -148327,7 +178085,6 @@ static int sqliteDefaultBusyCallback( ** must be done in increments of whole seconds */ sqlite3 *db = (sqlite3 *)ptr; int tmout = ((sqlite3 *)ptr)->busyTimeout; - UNUSED_PARAMETER(pFile); if( (count+1)*1000 > tmout ){ return 0; } @@ -148345,25 +178102,16 @@ static int sqliteDefaultBusyCallback( ** If this routine returns non-zero, the lock is retried. If it ** returns 0, the operation aborts with an SQLITE_BUSY error. */ -SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler *p, sqlite3_file *pFile){ +SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler *p){ int rc; if( p->xBusyHandler==0 || p->nBusy<0 ) return 0; - if( p->bExtraFileArg ){ - /* Add an extra parameter with the pFile pointer to the end of the - ** callback argument list */ - int (*xTra)(void*,int,sqlite3_file*); - xTra = (int(*)(void*,int,sqlite3_file*))p->xBusyHandler; - rc = xTra(p->pBusyArg, p->nBusy, pFile); - }else{ - /* Legacy style busy handler callback */ - rc = p->xBusyHandler(p->pBusyArg, p->nBusy); - } + rc = p->xBusyHandler(p->pBusyArg, p->nBusy); if( rc==0 ){ p->nBusy = -1; }else{ p->nBusy++; } - return rc; + return rc; } /* @@ -148382,7 +178130,6 @@ SQLITE_API int sqlite3_busy_handler( db->busyHandler.xBusyHandler = xBusy; db->busyHandler.pBusyArg = pArg; db->busyHandler.nBusy = 0; - db->busyHandler.bExtraFileArg = 0; db->busyTimeout = 0; sqlite3_mutex_leave(db->mutex); return SQLITE_OK; @@ -148395,9 +178142,9 @@ SQLITE_API int sqlite3_busy_handler( ** be invoked every nOps opcodes. */ SQLITE_API void sqlite3_progress_handler( - sqlite3 *db, + sqlite3 *db, int nOps, - int (*xProgress)(void*), + int (*xProgress)(void*), void *pArg ){ #ifdef SQLITE_ENABLE_API_ARMOR @@ -148433,7 +178180,6 @@ SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){ sqlite3_busy_handler(db, (int(*)(void*,int))sqliteDefaultBusyCallback, (void*)db); db->busyTimeout = ms; - db->busyHandler.bExtraFileArg = 1; }else{ sqlite3_busy_handler(db, 0, 0); } @@ -148445,20 +178191,37 @@ SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){ */ SQLITE_API void sqlite3_interrupt(sqlite3 *db){ #ifdef SQLITE_ENABLE_API_ARMOR - if( !sqlite3SafetyCheckOk(db) && (db==0 || db->magic!=SQLITE_MAGIC_ZOMBIE) ){ + if( !sqlite3SafetyCheckOk(db) + && (db==0 || db->eOpenState!=SQLITE_STATE_ZOMBIE) + ){ (void)SQLITE_MISUSE_BKPT; return; } #endif - db->u1.isInterrupted = 1; + AtomicStore(&db->u1.isInterrupted, 1); } +/* +** Return true or false depending on whether or not an interrupt is +** pending on connection db. +*/ +SQLITE_API int sqlite3_is_interrupted(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) + && (db==0 || db->eOpenState!=SQLITE_STATE_ZOMBIE) + ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + return AtomicLoad(&db->u1.isInterrupted)!=0; +} /* ** This function is exactly the same as sqlite3_create_function(), except ** that it is designed to be called by internal code. The difference is ** that if a malloc() fails in sqlite3_create_function(), an error code -** is returned and the mallocFailed flag cleared. +** is returned and the mallocFailed flag cleared. */ SQLITE_PRIVATE int sqlite3CreateFunc( sqlite3 *db, @@ -148469,26 +178232,37 @@ SQLITE_PRIVATE int sqlite3CreateFunc( void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), void (*xStep)(sqlite3_context*,int,sqlite3_value **), void (*xFinal)(sqlite3_context*), + void (*xValue)(sqlite3_context*), + void (*xInverse)(sqlite3_context*,int,sqlite3_value **), FuncDestructor *pDestructor ){ FuncDef *p; - int nName; int extraFlags; assert( sqlite3_mutex_held(db->mutex) ); - if( zFunctionName==0 || - (xSFunc && (xFinal || xStep)) || - (!xSFunc && (xFinal && !xStep)) || - (!xSFunc && (!xFinal && xStep)) || - (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG) || - (255<(nName = sqlite3Strlen30( zFunctionName))) ){ + assert( xValue==0 || xSFunc==0 ); + if( zFunctionName==0 /* Must have a valid name */ + || (xSFunc!=0 && xFinal!=0) /* Not both xSFunc and xFinal */ + || ((xFinal==0)!=(xStep==0)) /* Both or neither of xFinal and xStep */ + || ((xValue==0)!=(xInverse==0)) /* Both or neither of xValue, xInverse */ + || (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG) + || (255funcFlags & SQLITE_FUNC_ENCMASK)==enc && p->nArg==nArg ){ + if( p && (p->funcFlags & SQLITE_FUNC_ENCMASK)==(u32)enc && p->nArg==nArg ){ if( db->nVdbeActive ){ - sqlite3ErrorWithMsg(db, SQLITE_BUSY, + sqlite3ErrorWithMsg(db, SQLITE_BUSY, "unable to delete/modify user-function due to active statements"); assert( !db->mallocFailed ); return SQLITE_BUSY; }else{ - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, 0); } + }else if( xSFunc==0 && xFinal==0 ){ + /* Trying to delete a function that does not exist. This is a no-op. + ** https://sqlite.org/forum/forumpost/726219164b */ + return SQLITE_OK; } p = sqlite3FindFunction(db, zFunctionName, nArg, (u8)enc, 1); @@ -148549,40 +178340,35 @@ SQLITE_PRIVATE int sqlite3CreateFunc( p->u.pDestructor = pDestructor; p->funcFlags = (p->funcFlags & SQLITE_FUNC_ENCMASK) | extraFlags; testcase( p->funcFlags & SQLITE_DETERMINISTIC ); + testcase( p->funcFlags & SQLITE_DIRECTONLY ); p->xSFunc = xSFunc ? xSFunc : xStep; p->xFinalize = xFinal; + p->xValue = xValue; + p->xInverse = xInverse; p->pUserData = pUserData; p->nArg = (u16)nArg; return SQLITE_OK; } /* -** Create new user functions. +** Worker function used by utf-8 APIs that create new functions: +** +** sqlite3_create_function() +** sqlite3_create_function_v2() +** sqlite3_create_window_function() */ -SQLITE_API int sqlite3_create_function( +static int createFunctionApi( sqlite3 *db, const char *zFunc, int nArg, int enc, void *p, - void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), - void (*xStep)(sqlite3_context*,int,sqlite3_value **), - void (*xFinal)(sqlite3_context*) -){ - return sqlite3_create_function_v2(db, zFunc, nArg, enc, p, xSFunc, xStep, - xFinal, 0); -} - -SQLITE_API int sqlite3_create_function_v2( - sqlite3 *db, - const char *zFunc, - int nArg, - int enc, - void *p, - void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), - void (*xStep)(sqlite3_context*,int,sqlite3_value **), + void (*xSFunc)(sqlite3_context*,int,sqlite3_value**), + void (*xStep)(sqlite3_context*,int,sqlite3_value**), void (*xFinal)(sqlite3_context*), - void (*xDestroy)(void *) + void (*xValue)(sqlite3_context*), + void (*xInverse)(sqlite3_context*,int,sqlite3_value**), + void(*xDestroy)(void*) ){ int rc = SQLITE_ERROR; FuncDestructor *pArg = 0; @@ -148604,9 +178390,11 @@ SQLITE_API int sqlite3_create_function_v2( pArg->xDestroy = xDestroy; pArg->pUserData = p; } - rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, xSFunc, xStep, xFinal, pArg); + rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, + xSFunc, xStep, xFinal, xValue, xInverse, pArg + ); if( pArg && pArg->nRef==0 ){ - assert( rc!=SQLITE_OK ); + assert( rc!=SQLITE_OK || (xStep==0 && xFinal==0) ); xDestroy(p); sqlite3_free(pArg); } @@ -148617,6 +178405,52 @@ SQLITE_API int sqlite3_create_function_v2( return rc; } +/* +** Create new user functions. +*/ +SQLITE_API int sqlite3_create_function( + sqlite3 *db, + const char *zFunc, + int nArg, + int enc, + void *p, + void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), + void (*xStep)(sqlite3_context*,int,sqlite3_value **), + void (*xFinal)(sqlite3_context*) +){ + return createFunctionApi(db, zFunc, nArg, enc, p, xSFunc, xStep, + xFinal, 0, 0, 0); +} +SQLITE_API int sqlite3_create_function_v2( + sqlite3 *db, + const char *zFunc, + int nArg, + int enc, + void *p, + void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), + void (*xStep)(sqlite3_context*,int,sqlite3_value **), + void (*xFinal)(sqlite3_context*), + void (*xDestroy)(void *) +){ + return createFunctionApi(db, zFunc, nArg, enc, p, xSFunc, xStep, + xFinal, 0, 0, xDestroy); +} +SQLITE_API int sqlite3_create_window_function( + sqlite3 *db, + const char *zFunc, + int nArg, + int enc, + void *p, + void (*xStep)(sqlite3_context*,int,sqlite3_value **), + void (*xFinal)(sqlite3_context*), + void (*xValue)(sqlite3_context*), + void (*xInverse)(sqlite3_context*,int,sqlite3_value **), + void (*xDestroy)(void *) +){ + return createFunctionApi(db, zFunc, nArg, enc, p, 0, xStep, + xFinal, xValue, xInverse, xDestroy); +} + #ifndef SQLITE_OMIT_UTF16 SQLITE_API int sqlite3_create_function16( sqlite3 *db, @@ -148637,7 +178471,7 @@ SQLITE_API int sqlite3_create_function16( sqlite3_mutex_enter(db->mutex); assert( !db->mallocFailed ); zFunc8 = sqlite3Utf16to8(db, zFunctionName, -1, SQLITE_UTF16NATIVE); - rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xSFunc,xStep,xFinal,0); + rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xSFunc,xStep,xFinal,0,0,0); sqlite3DbFree(db, zFunc8); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); @@ -148673,7 +178507,7 @@ static void sqlite3InvalidFunction( ** ** If the function already exists as a regular global function, then ** this routine is a no-op. If the function does not exist, then create -** a new one that always throws a run-time error. +** a new one that always throws a run-time error. ** ** When virtual tables intend to provide an overloaded function, they ** should call this routine to make sure the global function exists. @@ -148697,7 +178531,7 @@ SQLITE_API int sqlite3_overload_function( rc = sqlite3FindFunction(db, zName, nArg, SQLITE_UTF8, 0)!=0; sqlite3_mutex_leave(db->mutex); if( rc ) return SQLITE_OK; - zCopy = sqlite3_mprintf(zName); + zCopy = sqlite3_mprintf("%s", zName); if( zCopy==0 ) return SQLITE_NOMEM; return sqlite3_create_function_v2(db, zName, nArg, SQLITE_UTF8, zCopy, sqlite3InvalidFunction, 0, 0, sqlite3_free); @@ -148706,7 +178540,7 @@ SQLITE_API int sqlite3_overload_function( #ifndef SQLITE_OMIT_TRACE /* ** Register a trace function. The pArg from the previously registered trace -** is returned. +** is returned. ** ** A NULL trace function means that no tracing is executes. A non-NULL ** trace is a pointer to a function that is invoked at the start of each @@ -148725,7 +178559,7 @@ SQLITE_API void *sqlite3_trace(sqlite3 *db, void(*xTrace)(void*,const char*), vo sqlite3_mutex_enter(db->mutex); pOld = db->pTraceArg; db->mTrace = xTrace ? SQLITE_TRACE_LEGACY : 0; - db->xTrace = (int(*)(u32,void*,void*,void*))xTrace; + db->trace.xLegacy = xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return pOld; @@ -148749,7 +178583,7 @@ SQLITE_API int sqlite3_trace_v2( if( mTrace==0 ) xTrace = 0; if( xTrace==0 ) mTrace = 0; db->mTrace = mTrace; - db->xTrace = xTrace; + db->trace.xV2 = xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return SQLITE_OK; @@ -148757,8 +178591,8 @@ SQLITE_API int sqlite3_trace_v2( #ifndef SQLITE_OMIT_DEPRECATED /* -** Register a profile function. The pArg from the previously registered -** profile function is returned. +** Register a profile function. The pArg from the previously registered +** profile function is returned. ** ** A NULL profile function means that no profiling is executes. A non-NULL ** profile is a pointer to a function that is invoked at the conclusion of @@ -148781,6 +178615,8 @@ SQLITE_API void *sqlite3_profile( pOld = db->pProfileArg; db->xProfile = xProfile; db->pProfileArg = pArg; + db->mTrace &= SQLITE_TRACE_NONLEGACY_MASK; + if( db->xProfile ) db->mTrace |= SQLITE_TRACE_XPROFILE; sqlite3_mutex_leave(db->mutex); return pOld; } @@ -148884,13 +178720,41 @@ SQLITE_API void *sqlite3_preupdate_hook( } #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ +/* +** Register a function to be invoked prior to each autovacuum that +** determines the number of pages to vacuum. +*/ +SQLITE_API int sqlite3_autovacuum_pages( + sqlite3 *db, /* Attach the hook to this database */ + unsigned int (*xCallback)(void*,const char*,u32,u32,u32), + void *pArg, /* Argument to the function */ + void (*xDestructor)(void*) /* Destructor for pArg */ +){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + if( xDestructor ) xDestructor(pArg); + return SQLITE_MISUSE_BKPT; + } +#endif + sqlite3_mutex_enter(db->mutex); + if( db->xAutovacDestr ){ + db->xAutovacDestr(db->pAutovacPagesArg); + } + db->xAutovacPages = xCallback; + db->pAutovacPagesArg = pArg; + db->xAutovacDestr = xDestructor; + sqlite3_mutex_leave(db->mutex); + return SQLITE_OK; +} + + #ifndef SQLITE_OMIT_WAL /* ** The sqlite3_wal_hook() callback registered by sqlite3_wal_autocheckpoint(). ** Invoke sqlite3_wal_checkpoint if the number of frames in the log file ** is greater than sqlite3.pWalArg cast to an integer (the value configured by ** wal_autocheckpoint()). -*/ +*/ SQLITE_PRIVATE int sqlite3WalDefaultHook( void *pClientData, /* Argument */ sqlite3 *db, /* Connection */ @@ -148976,7 +178840,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( return SQLITE_OK; #else int rc; /* Return code */ - int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */ + int iDb; /* Schema to checkpoint */ #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; @@ -148999,6 +178863,8 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( sqlite3_mutex_enter(db->mutex); if( zDb && zDb[0] ){ iDb = sqlite3FindDbName(db, zDb); + }else{ + iDb = SQLITE_MAX_DB; /* This means process all schemas */ } if( iDb<0 ){ rc = SQLITE_ERROR; @@ -149013,7 +178879,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( /* If there are no active statements, clear the interrupt flag at this ** point. */ if( db->nVdbeActive==0 ){ - db->u1.isInterrupted = 0; + AtomicStore(&db->u1.isInterrupted, 0); } sqlite3_mutex_leave(db->mutex); @@ -149024,7 +178890,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( /* ** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points -** to contains a zero-length string, all attached databases are +** to contains a zero-length string, all attached databases are ** checkpointed. */ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){ @@ -149038,16 +178904,16 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){ ** Run a checkpoint on database iDb. This is a no-op if database iDb is ** not currently open in WAL mode. ** -** If a transaction is open on the database being checkpointed, this -** function returns SQLITE_LOCKED and a checkpoint is not attempted. If -** an error occurs while running the checkpoint, an SQLite error code is +** If a transaction is open on the database being checkpointed, this +** function returns SQLITE_LOCKED and a checkpoint is not attempted. If +** an error occurs while running the checkpoint, an SQLite error code is ** returned (i.e. SQLITE_IOERR). Otherwise, SQLITE_OK. ** ** The mutex on database handle db should be held by the caller. The mutex ** associated with the specific b-tree being checkpointed is taken by ** this function while the checkpoint is running. ** -** If iDb is passed SQLITE_MAX_ATTACHED, then all attached databases are +** If iDb is passed SQLITE_MAX_DB then all attached databases are ** checkpointed. If an error is encountered it is returned immediately - ** no attempt is made to checkpoint any remaining databases. ** @@ -149062,9 +178928,11 @@ SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3 *db, int iDb, int eMode, int *pnLog assert( sqlite3_mutex_held(db->mutex) ); assert( !pnLog || *pnLog==-1 ); assert( !pnCkpt || *pnCkpt==-1 ); + testcase( iDb==SQLITE_MAX_ATTACHED ); /* See forum post a006d86f72 */ + testcase( iDb==SQLITE_MAX_DB ); for(i=0; inDb && rc==SQLITE_OK; i++){ - if( i==iDb || iDb==SQLITE_MAX_ATTACHED ){ + if( i==iDb || iDb==SQLITE_MAX_DB ){ rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt); pnLog = 0; pnCkpt = 0; @@ -149132,7 +179000,7 @@ SQLITE_API const char *sqlite3_errmsg(sqlite3 *db){ z = sqlite3ErrStr(SQLITE_NOMEM_BKPT); }else{ testcase( db->pErr==0 ); - z = (char*)sqlite3_value_text(db->pErr); + z = db->errCode ? (char*)sqlite3_value_text(db->pErr) : 0; assert( !db->mallocFailed ); if( z==0 ){ z = sqlite3ErrStr(db->errCode); @@ -149142,6 +179010,19 @@ SQLITE_API const char *sqlite3_errmsg(sqlite3 *db){ return z; } +/* +** Return the byte offset of the most recent error +*/ +SQLITE_API int sqlite3_error_offset(sqlite3 *db){ + int iOffset = -1; + if( db && sqlite3SafetyCheckSickOrOk(db) && db->errCode ){ + sqlite3_mutex_enter(db->mutex); + iOffset = db->errByteOffset; + sqlite3_mutex_leave(db->mutex); + } + return iOffset; +} + #ifndef SQLITE_OMIT_UTF16 /* ** Return UTF-16 encoded English language explanation of the most recent @@ -149209,7 +179090,7 @@ SQLITE_API int sqlite3_extended_errcode(sqlite3 *db){ } SQLITE_API int sqlite3_system_errno(sqlite3 *db){ return db ? db->iSysErrno : 0; -} +} /* ** Return a string that describes the kind of error specified in the @@ -149226,7 +179107,7 @@ SQLITE_API const char *sqlite3_errstr(int rc){ */ static int createCollation( sqlite3* db, - const char *zName, + const char *zName, u8 enc, void* pCtx, int(*xCompare)(void*,int,const void*,int,const void*), @@ -149234,7 +179115,7 @@ static int createCollation( ){ CollSeq *pColl; int enc2; - + assert( sqlite3_mutex_held(db->mutex) ); /* If SQLITE_UTF16 is specified as the encoding type, transform this @@ -149251,25 +179132,25 @@ static int createCollation( return SQLITE_MISUSE_BKPT; } - /* Check if this call is removing or replacing an existing collation + /* Check if this call is removing or replacing an existing collation ** sequence. If so, and there are active VMs, return busy. If there ** are no active VMs, invalidate any pre-compiled statements. */ pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 0); if( pColl && pColl->xCmp ){ if( db->nVdbeActive ){ - sqlite3ErrorWithMsg(db, SQLITE_BUSY, + sqlite3ErrorWithMsg(db, SQLITE_BUSY, "unable to delete/modify collation sequence due to active statements"); return SQLITE_BUSY; } - sqlite3ExpirePreparedStatements(db); + sqlite3ExpirePreparedStatements(db, 0); /* If collation sequence pColl was created directly by a call to ** sqlite3_create_collation, and not generated by synthCollSeq(), ** then any copies made by synthCollSeq() need to be invalidated. ** Also, collation destructor - CollSeq.xDel() - function may need ** to be called. - */ + */ if( (pColl->enc & ~SQLITE_UTF16_ALIGNED)==enc2 ){ CollSeq *aColl = sqlite3HashFind(&db->aCollSeq, zName); int j; @@ -149402,6 +179283,8 @@ SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){ if( newLimit>=0 ){ /* IMP: R-52476-28732 */ if( newLimit>aHardLimit[limitId] ){ newLimit = aHardLimit[limitId]; /* IMP: R-51463-25634 */ + }else if( newLimit<1 && limitId==SQLITE_LIMIT_LENGTH ){ + newLimit = 1; } db->aLimit[limitId] = newLimit; } @@ -149418,17 +179301,19 @@ SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){ ** query parameter. The second argument contains the URI (or non-URI filename) ** itself. When this function is called the *pFlags variable should contain ** the default flags to open the database handle with. The value stored in -** *pFlags may be updated before returning if the URI filename contains +** *pFlags may be updated before returning if the URI filename contains ** "cache=xxx" or "mode=xxx" query parameters. ** ** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to ** the VFS that should be used to open the database file. *pzFile is set to -** point to a buffer containing the name of the file to open. It is the -** responsibility of the caller to eventually call sqlite3_free() to release -** this buffer. +** point to a buffer containing the name of the file to open. The value +** stored in *pzFile is a database name acceptable to sqlite3_uri_parameter() +** and is in the same format as names created using sqlite3_create_filename(). +** The caller must invoke sqlite3_free_filename() (not sqlite3_free()!) on +** the value returned in *pzFile to avoid a memory leak. ** ** If an error occurs, then an SQLite error code is returned and *pzErrMsg -** may be set to point to a buffer containing an English language error +** may be set to point to a buffer containing an English language error ** message. It is the responsibility of the caller to eventually release ** this buffer by calling sqlite3_free(). */ @@ -149436,7 +179321,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( const char *zDefaultVfs, /* VFS to use if no "vfs=xxx" query option */ const char *zUri, /* Nul-terminated URI to parse */ unsigned int *pFlags, /* IN/OUT: SQLITE_OPEN_XXX flags */ - sqlite3_vfs **ppVfs, /* OUT: VFS to use */ + sqlite3_vfs **ppVfs, /* OUT: VFS to use */ char **pzFile, /* OUT: Filename component of URI */ char **pzErrMsg /* OUT: Error message (if rc!=SQLITE_OK) */ ){ @@ -149449,17 +179334,17 @@ SQLITE_PRIVATE int sqlite3ParseUri( assert( *pzErrMsg==0 ); - if( ((flags & SQLITE_OPEN_URI) /* IMP: R-48725-32206 */ - || sqlite3GlobalConfig.bOpenUri) /* IMP: R-51689-46548 */ - && nUri>=5 && memcmp(zUri, "file:", 5)==0 /* IMP: R-57884-37496 */ + if( ((flags & SQLITE_OPEN_URI) /* IMP: R-48725-32206 */ + || AtomicLoad(&sqlite3GlobalConfig.bOpenUri)) /* IMP: R-51689-46548 */ + && nUri>=5 && memcmp(zUri, "file:", 5)==0 /* IMP: R-57884-37496 */ ){ char *zOpt; int eState; /* Parser state when parsing URI */ int iIn; /* Input character index */ int iOut = 0; /* Output character index */ - u64 nByte = nUri+2; /* Bytes of space to allocate */ + u64 nByte = nUri+8; /* Bytes of space to allocate */ - /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen + /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen ** method that there may be extra parameters following the file-name. */ flags |= SQLITE_OPEN_URI; @@ -149467,6 +179352,9 @@ SQLITE_PRIVATE int sqlite3ParseUri( zFile = sqlite3_malloc64(nByte); if( !zFile ) return SQLITE_NOMEM_BKPT; + memset(zFile, 0, 4); /* 4-byte of 0x00 is the start of DB name marker */ + zFile += 4; + iIn = 5; #ifdef SQLITE_ALLOW_URI_AUTHORITY if( strncmp(zUri+5, "///", 3)==0 ){ @@ -149474,7 +179362,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( /* The following condition causes URIs with five leading / characters ** like file://///host/path to be converted into UNCs like //host/path. ** The correct URI for that UNC has only two or four leading / characters - ** file://host/path or file:////host/path. But 5 leading slashes is a + ** file://host/path or file:////host/path. But 5 leading slashes is a ** common error, we are told, so we handle it as a special case. */ if( strncmp(zUri+7, "///", 3)==0 ){ iIn++; } }else if( strncmp(zUri+5, "//localhost/", 12)==0 ){ @@ -149486,7 +179374,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( iIn = 7; while( zUri[iIn] && zUri[iIn]!='/' ) iIn++; if( iIn!=7 && (iIn!=16 || memcmp("localhost", &zUri[7], 9)) ){ - *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s", + *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s", iIn-7, &zUri[7]); rc = SQLITE_ERROR; goto parse_uri_out; @@ -149494,8 +179382,8 @@ SQLITE_PRIVATE int sqlite3ParseUri( } #endif - /* Copy the filename and any query parameters into the zFile buffer. - ** Decode %HH escape codes along the way. + /* Copy the filename and any query parameters into the zFile buffer. + ** Decode %HH escape codes along the way. ** ** Within this loop, variable eState may be set to 0, 1 or 2, depending ** on the parsing context. As follows: @@ -149507,9 +179395,9 @@ SQLITE_PRIVATE int sqlite3ParseUri( eState = 0; while( (c = zUri[iIn])!=0 && c!='#' ){ iIn++; - if( c=='%' - && sqlite3Isxdigit(zUri[iIn]) - && sqlite3Isxdigit(zUri[iIn+1]) + if( c=='%' + && sqlite3Isxdigit(zUri[iIn]) + && sqlite3Isxdigit(zUri[iIn+1]) ){ int octet = (sqlite3HexToInt(zUri[iIn++]) << 4); octet += sqlite3HexToInt(zUri[iIn++]); @@ -149521,7 +179409,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( ** case we ignore all text in the remainder of the path, name or ** value currently being parsed. So ignore the current character ** and skip to the next "?", "=" or "&", as appropriate. */ - while( (c = zUri[iIn])!=0 && c!='#' + while( (c = zUri[iIn])!=0 && c!='#' && (eState!=0 || c!='?') && (eState!=1 || (c!='=' && c!='&')) && (eState!=2 || c!='&') @@ -149556,10 +179444,9 @@ SQLITE_PRIVATE int sqlite3ParseUri( zFile[iOut++] = c; } if( eState==1 ) zFile[iOut++] = '\0'; - zFile[iOut++] = '\0'; - zFile[iOut++] = '\0'; + memset(zFile+iOut, 0, 4); /* end-of-options + empty journal filenames */ - /* Check if there were any options specified that should be interpreted + /* Check if there were any options specified that should be interpreted ** here. Options that are interpreted here include "vfs" and those that ** correspond to flags that may be passed to the sqlite3_open_v2() ** method. */ @@ -149595,7 +179482,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( if( nOpt==4 && memcmp("mode", zOpt, 4)==0 ){ static struct OpenMode aOpenMode[] = { { "ro", SQLITE_OPEN_READONLY }, - { "rw", SQLITE_OPEN_READWRITE }, + { "rw", SQLITE_OPEN_READWRITE }, { "rwc", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE }, { "memory", SQLITE_OPEN_MEMORY }, { 0, 0 } @@ -149637,13 +179524,14 @@ SQLITE_PRIVATE int sqlite3ParseUri( } }else{ - zFile = sqlite3_malloc64(nUri+2); + zFile = sqlite3_malloc64(nUri+8); if( !zFile ) return SQLITE_NOMEM_BKPT; + memset(zFile, 0, 4); + zFile += 4; if( nUri ){ memcpy(zFile, zUri, nUri); } - zFile[nUri] = '\0'; - zFile[nUri+1] = '\0'; + memset(zFile+nUri, 0, 4); flags &= ~SQLITE_OPEN_URI; } @@ -149654,7 +179542,7 @@ SQLITE_PRIVATE int sqlite3ParseUri( } parse_uri_out: if( rc!=SQLITE_OK ){ - sqlite3_free(zFile); + sqlite3_free_filename(zFile); zFile = 0; } *pFlags = flags; @@ -149662,10 +179550,26 @@ SQLITE_PRIVATE int sqlite3ParseUri( return rc; } +/* +** This routine does the core work of extracting URI parameters from a +** database filename for the sqlite3_uri_parameter() interface. +*/ +static const char *uriParameter(const char *zFilename, const char *zParam){ + zFilename += sqlite3Strlen30(zFilename) + 1; + while( ALWAYS(zFilename!=0) && zFilename[0] ){ + int x = strcmp(zFilename, zParam); + zFilename += sqlite3Strlen30(zFilename) + 1; + if( x==0 ) return zFilename; + zFilename += sqlite3Strlen30(zFilename) + 1; + } + return 0; +} + + /* ** This routine does the work of opening a database on behalf of -** sqlite3_open() and sqlite3_open16(). The database filename "zFilename" +** sqlite3_open() and sqlite3_open16(). The database filename "zFilename" ** is UTF-8 encoded. */ static int openDatabase( @@ -149679,6 +179583,7 @@ static int openDatabase( int isThreadsafe; /* True for threadsafe connections */ char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */ char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */ + int i; /* Loop counter */ #ifdef SQLITE_ENABLE_API_ARMOR if( ppDb==0 ) return SQLITE_MISUSE_BKPT; @@ -149711,18 +179616,18 @@ static int openDatabase( ** dealt with in the previous code block. Besides these, the only ** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY, ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE, - ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits. Silently mask - ** off all other flags. + ** SQLITE_OPEN_PRIVATECACHE, SQLITE_OPEN_EXRESCODE, and some reserved + ** bits. Silently mask off all other flags. */ flags &= ~( SQLITE_OPEN_DELETEONCLOSE | SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_MAIN_DB | - SQLITE_OPEN_TEMP_DB | - SQLITE_OPEN_TRANSIENT_DB | - SQLITE_OPEN_MAIN_JOURNAL | - SQLITE_OPEN_TEMP_JOURNAL | - SQLITE_OPEN_SUBJOURNAL | - SQLITE_OPEN_MASTER_JOURNAL | + SQLITE_OPEN_TEMP_DB | + SQLITE_OPEN_TRANSIENT_DB | + SQLITE_OPEN_MAIN_JOURNAL | + SQLITE_OPEN_TEMP_JOURNAL | + SQLITE_OPEN_SUBJOURNAL | + SQLITE_OPEN_SUPER_JOURNAL | SQLITE_OPEN_NOMUTEX | SQLITE_OPEN_FULLMUTEX | SQLITE_OPEN_WAL @@ -149731,7 +179636,7 @@ static int openDatabase( /* Allocate the sqlite data structure */ db = sqlite3MallocZero( sizeof(sqlite3) ); if( db==0 ) goto opendb_out; - if( isThreadsafe + if( isThreadsafe #ifdef SQLITE_ENABLE_MULTITHREADED_CHECKS || sqlite3GlobalConfig.bCoreMutex #endif @@ -149747,10 +179652,12 @@ static int openDatabase( } } sqlite3_mutex_enter(db->mutex); - db->errMask = 0xff; + db->errMask = (flags & SQLITE_OPEN_EXRESCODE)!=0 ? 0xffffffff : 0xff; db->nDb = 2; - db->magic = SQLITE_MAGIC_BUSY; + db->eOpenState = SQLITE_STATE_BUSY; db->aDb = db->aDbStatic; + db->lookaside.bDisable = 1; + db->lookaside.sz = 0; assert( sizeof(db->aLimit)==sizeof(aHardLimit) ); memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit)); @@ -149759,8 +179666,47 @@ static int openDatabase( db->nextAutovac = -1; db->szMmap = sqlite3GlobalConfig.szMmap; db->nextPagesize = 0; + db->init.azInit = sqlite3StdType; /* Any array of string ptrs will do */ +#ifdef SQLITE_ENABLE_SORTER_MMAP + /* Beginning with version 3.37.0, using the VFS xFetch() API to memory-map + ** the temporary files used to do external sorts (see code in vdbesort.c) + ** is disabled. It can still be used either by defining + ** SQLITE_ENABLE_SORTER_MMAP at compile time or by using the + ** SQLITE_TESTCTRL_SORTER_MMAP test-control at runtime. */ db->nMaxSorterMmap = 0x7FFFFFFF; - db->flags |= SQLITE_ShortColNames | SQLITE_EnableTrigger | SQLITE_CacheSpill +#endif + db->flags |= SQLITE_ShortColNames + | SQLITE_EnableTrigger + | SQLITE_EnableView + | SQLITE_CacheSpill +#if !defined(SQLITE_TRUSTED_SCHEMA) || SQLITE_TRUSTED_SCHEMA+0!=0 + | SQLITE_TrustedSchema +#endif +/* The SQLITE_DQS compile-time option determines the default settings +** for SQLITE_DBCONFIG_DQS_DDL and SQLITE_DBCONFIG_DQS_DML. +** +** SQLITE_DQS SQLITE_DBCONFIG_DQS_DDL SQLITE_DBCONFIG_DQS_DML +** ---------- ----------------------- ----------------------- +** undefined on on +** 3 on on +** 2 on off +** 1 off on +** 0 off off +** +** Legacy behavior is 3 (double-quoted string literals are allowed anywhere) +** and so that is the default. But developers are encouraged to use +** -DSQLITE_DQS=0 (best) or -DSQLITE_DQS=1 (second choice) if possible. +*/ +#if !defined(SQLITE_DQS) +# define SQLITE_DQS 3 +#endif +#if (SQLITE_DQS&1)==1 + | SQLITE_DqsDML +#endif +#if (SQLITE_DQS&2)==2 + | SQLITE_DqsDDL +#endif + #if !defined(SQLITE_DEFAULT_AUTOMATIC_INDEX) || SQLITE_DEFAULT_AUTOMATIC_INDEX | SQLITE_AutoIndex #endif @@ -149790,6 +179736,15 @@ static int openDatabase( #endif #if defined(SQLITE_ENABLE_QPSG) | SQLITE_EnableQPSG +#endif +#if defined(SQLITE_DEFAULT_DEFENSIVE) + | SQLITE_Defensive +#endif +#if defined(SQLITE_DEFAULT_LEGACY_ALTER_TABLE) + | SQLITE_LegacyAlter +#endif +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) + | SQLITE_StmtScanStatus #endif ; sqlite3HashInit(&db->aCollSeq); @@ -149808,19 +179763,27 @@ static int openDatabase( createCollation(db, sqlite3StrBINARY, SQLITE_UTF16BE, 0, binCollFunc, 0); createCollation(db, sqlite3StrBINARY, SQLITE_UTF16LE, 0, binCollFunc, 0); createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0); - createCollation(db, "RTRIM", SQLITE_UTF8, (void*)1, binCollFunc, 0); + createCollation(db, "RTRIM", SQLITE_UTF8, 0, rtrimCollFunc, 0); if( db->mallocFailed ){ goto opendb_out; } - /* EVIDENCE-OF: R-08308-17224 The default collating function for all - ** strings is BINARY. - */ - db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, sqlite3StrBINARY, 0); - assert( db->pDfltColl!=0 ); + +#if SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL) + /* Process magic filenames ":localStorage:" and ":sessionStorage:" */ + if( zFilename && zFilename[0]==':' ){ + if( strcmp(zFilename, ":localStorage:")==0 ){ + zFilename = "file:local?vfs=kvvfs"; + flags |= SQLITE_OPEN_URI; + }else if( strcmp(zFilename, ":sessionStorage:")==0 ){ + zFilename = "file:session?vfs=kvvfs"; + flags |= SQLITE_OPEN_URI; + } + } +#endif /* SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL) */ /* Parse the filename/URI argument ** - ** Only allow sensible combinations of bits in the flags argument. + ** Only allow sensible combinations of bits in the flags argument. ** Throw an error if any non-sense combination is used. If we ** do not block illegal combinations here, it could trigger ** assert() statements in deeper layers. Sensible combinations @@ -149838,7 +179801,7 @@ static int openDatabase( testcase( (1<<(flags&7))==0x04 ); /* READWRITE */ testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */ if( ((1<<(flags&7)) & 0x46)==0 ){ - rc = SQLITE_MISUSE_BKPT; /* IMP: R-65497-44594 */ + rc = SQLITE_MISUSE_BKPT; /* IMP: R-18321-05872 */ }else{ rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg); } @@ -149848,6 +179811,12 @@ static int openDatabase( sqlite3_free(zErrMsg); goto opendb_out; } + assert( db->pVfs!=0 ); +#if SQLITE_OS_KV || defined(SQLITE_OS_KV_OPTIONAL) + if( sqlite3_stricmp(db->pVfs->zName, "kvvfs")==0 ){ + db->temp_store = 2; + } +#endif /* Open the backend database driver */ rc = sqlite3BtreeOpen(db->pVfs, zOpen, db, &db->aDb[0].pBt, 0, @@ -149861,19 +179830,21 @@ static int openDatabase( } sqlite3BtreeEnter(db->aDb[0].pBt); db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt); - if( !db->mallocFailed ) ENC(db) = SCHEMA_ENC(db); + if( !db->mallocFailed ){ + sqlite3SetTextEncoding(db, SCHEMA_ENC(db)); + } sqlite3BtreeLeave(db->aDb[0].pBt); db->aDb[1].pSchema = sqlite3SchemaGet(db, 0); /* The default safety_level for the main database is FULL; for the temp - ** database it is OFF. This matches the pager layer defaults. + ** database it is OFF. This matches the pager layer defaults. */ db->aDb[0].zDbSName = "main"; db->aDb[0].safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1; db->aDb[1].zDbSName = "temp"; db->aDb[1].safety_level = PAGER_SYNCHRONOUS_OFF; - db->magic = SQLITE_MAGIC_OPEN; + db->eOpenState = SQLITE_STATE_OPEN; if( db->mallocFailed ){ goto opendb_out; } @@ -149886,14 +179857,11 @@ static int openDatabase( sqlite3RegisterPerConnectionBuiltinFunctions(db); rc = sqlite3_errcode(db); -#ifdef SQLITE_ENABLE_FTS5 - /* Register any built-in FTS5 module before loading the automatic - ** extensions. This allows automatic extensions to register FTS5 - ** tokenizers and auxiliary functions. */ - if( !db->mallocFailed && rc==SQLITE_OK ){ - rc = sqlite3Fts5Init(db); + + /* Load compiled-in extensions */ + for(i=0; rc==SQLITE_OK && imallocFailed ){ - extern int sqlite3Fts1Init(sqlite3*); - rc = sqlite3Fts1Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_FTS2 - if( !db->mallocFailed && rc==SQLITE_OK ){ - extern int sqlite3Fts2Init(sqlite3*); - rc = sqlite3Fts2Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_FTS3 /* automatically defined by SQLITE_ENABLE_FTS4 */ - if( !db->mallocFailed && rc==SQLITE_OK ){ - rc = sqlite3Fts3Init(db); - } -#endif - -#if defined(SQLITE_ENABLE_ICU) || defined(SQLITE_ENABLE_ICU_COLLATIONS) - if( !db->mallocFailed && rc==SQLITE_OK ){ - rc = sqlite3IcuInit(db); - } -#endif - -#ifdef SQLITE_ENABLE_RTREE - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3RtreeInit(db); - } -#endif - -#ifdef SQLITE_ENABLE_DBPAGE_VTAB - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3DbpageRegister(db); - } -#endif - -#ifdef SQLITE_ENABLE_DBSTAT_VTAB - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3DbstatRegister(db); - } -#endif - -#ifdef SQLITE_ENABLE_JSON1 - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3Json1Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_STMTVTAB - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3StmtVtabInit(db); - } +#ifdef SQLITE_ENABLE_INTERNAL_FUNCTIONS + /* Testing use only!!! The -DSQLITE_ENABLE_INTERNAL_FUNCTIONS=1 compile-time + ** option gives access to internal functions by default. + ** Testing use only!!! */ + db->mDbFlags |= DBFLAG_InternalFunc; #endif /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking @@ -149987,12 +179906,12 @@ opendb_out: sqlite3_mutex_leave(db->mutex); } rc = sqlite3_errcode(db); - assert( db!=0 || rc==SQLITE_NOMEM ); - if( rc==SQLITE_NOMEM ){ + assert( db!=0 || (rc&0xff)==SQLITE_NOMEM ); + if( (rc&0xff)==SQLITE_NOMEM ){ sqlite3_close(db); db = 0; }else if( rc!=SQLITE_OK ){ - db->magic = SQLITE_MAGIC_SICK; + db->eOpenState = SQLITE_STATE_SICK; } *ppDb = db; #ifdef SQLITE_ENABLE_SQLLOG @@ -150002,33 +179921,17 @@ opendb_out: sqlite3GlobalConfig.xSqllog(pArg, db, zFilename, 0); } #endif -#if defined(SQLITE_HAS_CODEC) - if( rc==SQLITE_OK ){ - const char *zKey; - if( (zKey = sqlite3_uri_parameter(zOpen, "hexkey"))!=0 && zKey[0] ){ - u8 iByte; - int i; - char zDecoded[40]; - for(i=0, iByte=0; ipSelect ){ + if( !pTab || IsView(pTab) ){ pTab = 0; goto error_out; } /* Find the column for which info is requested */ if( zColumnName==0 ){ - /* Query for existance of table only */ + /* Query for existence of table only */ }else{ for(iCol=0; iColnCol; iCol++){ pCol = &pTab->aCol[iCol]; - if( 0==sqlite3StrICmp(pCol->zName, zColumnName) ){ + if( 0==sqlite3StrICmp(pCol->zCnName, zColumnName) ){ break; } } @@ -150346,16 +180251,16 @@ SQLITE_API int sqlite3_table_column_metadata( /* The following block stores the meta information that will be returned ** to the caller in local variables zDataType, zCollSeq, notnull, primarykey ** and autoinc. At this point there are two possibilities: - ** - ** 1. The specified column name was rowid", "oid" or "_rowid_" - ** and there is no explicitly declared IPK column. ** - ** 2. The table is not a view and the column name identified an + ** 1. The specified column name was rowid", "oid" or "_rowid_" + ** and there is no explicitly declared IPK column. + ** + ** 2. The table is not a view and the column name identified an ** explicitly declared column. Copy meta information from *pCol. - */ + */ if( pCol ){ zDataType = sqlite3ColumnType(pCol,0); - zCollSeq = pCol->zColl; + zCollSeq = sqlite3ColumnColl(pCol); notnull = pCol->notNull!=0; primarykey = (pCol->colFlags & COLFLAG_PRIMKEY)!=0; autoinc = pTab->iPKey==iCol && (pTab->tabFlags & TF_Autoincrement)!=0; @@ -150402,10 +180307,10 @@ SQLITE_API int sqlite3_sleep(int ms){ pVfs = sqlite3_vfs_find(0); if( pVfs==0 ) return 0; - /* This function works in milliseconds, but the underlying OsSleep() + /* This function works in milliseconds, but the underlying OsSleep() ** API uses microseconds. Hence the 1000's. */ - rc = (sqlite3OsSleep(pVfs, 1000*ms)/1000); + rc = (sqlite3OsSleep(pVfs, ms<0 ? 0 : 1000*ms)/1000); return rc; } @@ -150451,8 +180356,23 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo }else if( op==SQLITE_FCNTL_JOURNAL_POINTER ){ *(sqlite3_file**)pArg = sqlite3PagerJrnlFile(pPager); rc = SQLITE_OK; + }else if( op==SQLITE_FCNTL_DATA_VERSION ){ + *(unsigned int*)pArg = sqlite3PagerDataVersion(pPager); + rc = SQLITE_OK; + }else if( op==SQLITE_FCNTL_RESERVE_BYTES ){ + int iNew = *(int*)pArg; + *(int*)pArg = sqlite3BtreeGetRequestedReserve(pBtree); + if( iNew>=0 && iNew<=255 ){ + sqlite3BtreeSetPageSize(pBtree, 0, iNew, 0); + } + rc = SQLITE_OK; + }else if( op==SQLITE_FCNTL_RESET_CACHE ){ + sqlite3BtreeClearCache(pBtree); + rc = SQLITE_OK; }else{ + int nSave = db->busyHandler.nBusy; rc = sqlite3OsFileControl(fd, op, pArg); + db->busyHandler.nBusy = nSave; } sqlite3BtreeLeave(pBtree); } @@ -150490,15 +180410,38 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } - /* - ** Reset the PRNG back to its uninitialized state. The next call - ** to sqlite3_randomness() will reseed the PRNG using a single call - ** to the xRandomness method of the default VFS. + /* sqlite3_test_control(SQLITE_TESTCTRL_PRNG_SEED, int x, sqlite3 *db); + ** + ** Control the seed for the pseudo-random number generator (PRNG) that + ** is built into SQLite. Cases: + ** + ** x!=0 && db!=0 Seed the PRNG to the current value of the + ** schema cookie in the main database for db, or + ** x if the schema cookie is zero. This case + ** is convenient to use with database fuzzers + ** as it allows the fuzzer some control over the + ** the PRNG seed. + ** + ** x!=0 && db==0 Seed the PRNG to the value of x. + ** + ** x==0 && db==0 Revert to default behavior of using the + ** xRandomness method on the primary VFS. + ** + ** This test-control also resets the PRNG so that the new seed will + ** be used for the next call to sqlite3_randomness(). */ - case SQLITE_TESTCTRL_PRNG_RESET: { +#ifndef SQLITE_OMIT_WSD + case SQLITE_TESTCTRL_PRNG_SEED: { + int x = va_arg(ap, int); + int y; + sqlite3 *db = va_arg(ap, sqlite3*); + assert( db==0 || db->aDb[0].pSchema!=0 ); + if( db && (y = db->aDb[0].pSchema->schema_cookie)!=0 ){ x = y; } + sqlite3Config.iPrngSeed = x; sqlite3_randomness(0,0); break; } +#endif /* ** sqlite3_test_control(BITVEC_TEST, size, program) @@ -150527,12 +180470,16 @@ SQLITE_API int sqlite3_test_control(int op, ...){ ** sqlite3_test_control(). */ case SQLITE_TESTCTRL_FAULT_INSTALL: { - /* MSVC is picky about pulling func ptrs from va lists. - ** http://support.microsoft.com/kb/47961 + /* A bug in MSVC prevents it from understanding pointers to functions + ** types in the second argument to va_arg(). Work around the problem + ** using a typedef. + ** http://support.microsoft.com/kb/47961 <-- dead hyperlink + ** Search at http://web.archive.org/ to find the 2015-03-16 archive + ** of the link above to see the original text. ** sqlite3GlobalConfig.xTestCallback = va_arg(ap, int(*)(int)); */ - typedef int(*TESTCALLBACKFUNC_t)(int); - sqlite3GlobalConfig.xTestCallback = va_arg(ap, TESTCALLBACKFUNC_t); + typedef int(*sqlite3FaultFuncType)(int); + sqlite3GlobalConfig.xTestCallback = va_arg(ap, sqlite3FaultFuncType); rc = sqlite3FaultSim(0); break; } @@ -150540,7 +180487,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){ /* ** sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd) ** - ** Register hooks to call to indicate which malloc() failures + ** Register hooks to call to indicate which malloc() failures ** are benign. */ case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: { @@ -150591,6 +180538,30 @@ SQLITE_API int sqlite3_test_control(int op, ...){ volatile int x = 0; assert( /*side-effects-ok*/ (x = va_arg(ap,int))!=0 ); rc = x; +#if defined(SQLITE_DEBUG) + /* Invoke these debugging routines so that the compiler does not + ** issue "defined but not used" warnings. */ + if( x==9999 ){ + sqlite3ShowExpr(0); + sqlite3ShowExpr(0); + sqlite3ShowExprList(0); + sqlite3ShowIdList(0); + sqlite3ShowSrcList(0); + sqlite3ShowWith(0); + sqlite3ShowUpsert(0); +#ifndef SQLITE_OMIT_TRIGGER + sqlite3ShowTriggerStep(0); + sqlite3ShowTriggerStepList(0); + sqlite3ShowTrigger(0); + sqlite3ShowTriggerList(0); +#endif +#ifndef SQLITE_OMIT_WINDOWFUNC + sqlite3ShowWindow(0); + sqlite3ShowWinFunc(0); +#endif + sqlite3ShowSelect(0); + } +#endif break; } @@ -150638,29 +180609,15 @@ SQLITE_API int sqlite3_test_control(int op, ...){ ** 10 little-endian, determined at run-time ** 432101 big-endian, determined at compile-time ** 123410 little-endian, determined at compile-time - */ + */ case SQLITE_TESTCTRL_BYTEORDER: { rc = SQLITE_BYTEORDER*100 + SQLITE_LITTLEENDIAN*10 + SQLITE_BIGENDIAN; break; } - /* sqlite3_test_control(SQLITE_TESTCTRL_RESERVE, sqlite3 *db, int N) - ** - ** Set the nReserve size to N for the main database on the database - ** connection db. - */ - case SQLITE_TESTCTRL_RESERVE: { - sqlite3 *db = va_arg(ap, sqlite3*); - int x = va_arg(ap,int); - sqlite3_mutex_enter(db->mutex); - sqlite3BtreeSetPageSize(db->aDb[0].pBt, 0, x, 0); - sqlite3_mutex_leave(db->mutex); - break; - } - /* sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS, sqlite3 *db, int N) ** - ** Enable or disable various optimizations for testing purposes. The + ** Enable or disable various optimizations for testing purposes. The ** argument N is a bitmask of optimizations to be disabled. For normal ** operation N should be 0. The idea is that a test program (like the ** SQL Logic Test or SLT test module) can run the same SQL multiple times @@ -150669,18 +180626,42 @@ SQLITE_API int sqlite3_test_control(int op, ...){ */ case SQLITE_TESTCTRL_OPTIMIZATIONS: { sqlite3 *db = va_arg(ap, sqlite3*); - db->dbOptFlags = (u16)(va_arg(ap, int) & 0xffff); + db->dbOptFlags = va_arg(ap, u32); break; } - /* sqlite3_test_control(SQLITE_TESTCTRL_LOCALTIME_FAULT, int onoff); + /* sqlite3_test_control(SQLITE_TESTCTRL_LOCALTIME_FAULT, onoff, xAlt); ** - ** If parameter onoff is non-zero, configure the wrappers so that all - ** subsequent calls to localtime() and variants fail. If onoff is zero, - ** undo this setting. + ** If parameter onoff is 1, subsequent calls to localtime() fail. + ** If 2, then invoke xAlt() instead of localtime(). If 0, normal + ** processing. + ** + ** xAlt arguments are void pointers, but they really want to be: + ** + ** int xAlt(const time_t*, struct tm*); + ** + ** xAlt should write results in to struct tm object of its 2nd argument + ** and return zero on success, or return non-zero on failure. */ case SQLITE_TESTCTRL_LOCALTIME_FAULT: { sqlite3GlobalConfig.bLocaltimeFault = va_arg(ap, int); + if( sqlite3GlobalConfig.bLocaltimeFault==2 ){ + typedef int(*sqlite3LocaltimeType)(const void*,void*); + sqlite3GlobalConfig.xAltLocaltime = va_arg(ap, sqlite3LocaltimeType); + }else{ + sqlite3GlobalConfig.xAltLocaltime = 0; + } + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_INTERNAL_FUNCTIONS, sqlite3*); + ** + ** Toggle the ability to use internal functions on or off for + ** the database connection given in the argument. + */ + case SQLITE_TESTCTRL_INTERNAL_FUNCTIONS: { + sqlite3 *db = va_arg(ap, sqlite3*); + db->mDbFlags ^= DBFLAG_InternalFunc; break; } @@ -150690,13 +180671,30 @@ SQLITE_API int sqlite3_test_control(int op, ...){ ** formed and never corrupt. This flag is clear by default, indicating that ** database files might have arbitrary corruption. Setting the flag during ** testing causes certain assert() statements in the code to be activated - ** that demonstrat invariants on well-formed database files. + ** that demonstrate invariants on well-formed database files. */ case SQLITE_TESTCTRL_NEVER_CORRUPT: { sqlite3GlobalConfig.neverCorrupt = va_arg(ap, int); break; } + /* sqlite3_test_control(SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS, int); + ** + ** Set or clear a flag that causes SQLite to verify that type, name, + ** and tbl_name fields of the sqlite_schema table. This is normally + ** on, but it is sometimes useful to turn it off for testing. + ** + ** 2020-07-22: Disabling EXTRA_SCHEMA_CHECKS also disables the + ** verification of rootpage numbers when parsing the schema. This + ** is useful to make it easier to reach strange internal error states + ** during testing. The EXTRA_SCHEMA_CHECKS setting is always enabled + ** in production. + */ + case SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS: { + sqlite3GlobalConfig.bExtraSchemaChecks = va_arg(ap, int); + break; + } + /* Set the threshold at which OP_Once counters reset back to zero. ** By default this is 0x7ffffffe (over 2 billion), but that value is ** too big to test in a reasonable amount of time, so this control is @@ -150709,12 +180707,13 @@ SQLITE_API int sqlite3_test_control(int op, ...){ /* sqlite3_test_control(SQLITE_TESTCTRL_VDBE_COVERAGE, xCallback, ptr); ** - ** Set the VDBE coverage callback function to xCallback with context + ** Set the VDBE coverage callback function to xCallback with context ** pointer ptr. */ case SQLITE_TESTCTRL_VDBE_COVERAGE: { #ifdef SQLITE_VDBE_COVERAGE - typedef void (*branch_callback)(void*,int,u8,u8); + typedef void (*branch_callback)(void*,unsigned int, + unsigned char,unsigned char); sqlite3GlobalConfig.xVdbeBranch = va_arg(ap,branch_callback); sqlite3GlobalConfig.pVdbeBranchArg = va_arg(ap,void*); #endif @@ -150756,12 +180755,16 @@ SQLITE_API int sqlite3_test_control(int op, ...){ */ case SQLITE_TESTCTRL_IMPOSTER: { sqlite3 *db = va_arg(ap, sqlite3*); + int iDb; sqlite3_mutex_enter(db->mutex); - db->init.iDb = sqlite3FindDbName(db, va_arg(ap,const char*)); - db->init.busy = db->init.imposterTable = va_arg(ap,int); - db->init.newTnum = va_arg(ap,int); - if( db->init.busy==0 && db->init.newTnum>0 ){ - sqlite3ResetAllSchemasOfConnection(db); + iDb = sqlite3FindDbName(db, va_arg(ap,const char*)); + if( iDb>=0 ){ + db->init.iDb = iDb; + db->init.busy = db->init.imposterTable = va_arg(ap,int); + db->init.newTnum = va_arg(ap,int); + if( db->init.busy==0 && db->init.newTnum>0 ){ + sqlite3ResetAllSchemasOfConnection(db); + } } sqlite3_mutex_leave(db->mutex); break; @@ -150782,15 +180785,215 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } #endif /* defined(YYCOVERAGE) */ + + /* sqlite3_test_control(SQLITE_TESTCTRL_RESULT_INTREAL, sqlite3_context*); + ** + ** This test-control causes the most recent sqlite3_result_int64() value + ** to be interpreted as a MEM_IntReal instead of as an MEM_Int. Normally, + ** MEM_IntReal values only arise during an INSERT operation of integer + ** values into a REAL column, so they can be challenging to test. This + ** test-control enables us to write an intreal() SQL function that can + ** inject an intreal() value at arbitrary places in an SQL statement, + ** for testing purposes. + */ + case SQLITE_TESTCTRL_RESULT_INTREAL: { + sqlite3_context *pCtx = va_arg(ap, sqlite3_context*); + sqlite3ResultIntReal(pCtx); + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_SEEK_COUNT, + ** sqlite3 *db, // Database connection + ** u64 *pnSeek // Write seek count here + ** ); + ** + ** This test-control queries the seek-counter on the "main" database + ** file. The seek-counter is written into *pnSeek and is then reset. + ** The seek-count is only available if compiled with SQLITE_DEBUG. + */ + case SQLITE_TESTCTRL_SEEK_COUNT: { + sqlite3 *db = va_arg(ap, sqlite3*); + u64 *pn = va_arg(ap, sqlite3_uint64*); + *pn = sqlite3BtreeSeekCount(db->aDb->pBt); + (void)db; /* Silence harmless unused variable warning */ + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, op, ptr) + ** + ** "ptr" is a pointer to a u32. + ** + ** op==0 Store the current sqlite3TreeTrace in *ptr + ** op==1 Set sqlite3TreeTrace to the value *ptr + ** op==2 Store the current sqlite3WhereTrace in *ptr + ** op==3 Set sqlite3WhereTrace to the value *ptr + */ + case SQLITE_TESTCTRL_TRACEFLAGS: { + int opTrace = va_arg(ap, int); + u32 *ptr = va_arg(ap, u32*); + switch( opTrace ){ + case 0: *ptr = sqlite3TreeTrace; break; + case 1: sqlite3TreeTrace = *ptr; break; + case 2: *ptr = sqlite3WhereTrace; break; + case 3: sqlite3WhereTrace = *ptr; break; + } + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_LOGEST, + ** double fIn, // Input value + ** int *pLogEst, // sqlite3LogEstFromDouble(fIn) + ** u64 *pInt, // sqlite3LogEstToInt(*pLogEst) + ** int *pLogEst2 // sqlite3LogEst(*pInt) + ** ); + ** + ** Test access for the LogEst conversion routines. + */ + case SQLITE_TESTCTRL_LOGEST: { + double rIn = va_arg(ap, double); + LogEst rLogEst = sqlite3LogEstFromDouble(rIn); + int *pI1 = va_arg(ap,int*); + u64 *pU64 = va_arg(ap,u64*); + int *pI2 = va_arg(ap,int*); + *pI1 = rLogEst; + *pU64 = sqlite3LogEstToInt(rLogEst); + *pI2 = sqlite3LogEst(*pU64); + break; + } + +#if !defined(SQLITE_OMIT_WSD) + /* sqlite3_test_control(SQLITE_TESTCTRL_USELONGDOUBLE, int X); + ** + ** X<0 Make no changes to the bUseLongDouble. Just report value. + ** X==0 Disable bUseLongDouble + ** X==1 Enable bUseLongDouble + ** X==2 Set bUseLongDouble to its default value for this platform + */ + case SQLITE_TESTCTRL_USELONGDOUBLE: { + int b = va_arg(ap, int); + if( b==2 ) b = sizeof(LONGDOUBLE_TYPE)>8; + if( b>=0 ) sqlite3Config.bUseLongDouble = b>0; + rc = sqlite3Config.bUseLongDouble!=0; + break; + } +#endif + + +#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_WSD) + /* sqlite3_test_control(SQLITE_TESTCTRL_TUNE, id, *piValue) + ** + ** If "id" is an integer between 1 and SQLITE_NTUNE then set the value + ** of the id-th tuning parameter to *piValue. If "id" is between -1 + ** and -SQLITE_NTUNE, then write the current value of the (-id)-th + ** tuning parameter into *piValue. + ** + ** Tuning parameters are for use during transient development builds, + ** to help find the best values for constants in the query planner. + ** Access tuning parameters using the Tuning(ID) macro. Set the + ** parameters in the CLI using ".testctrl tune ID VALUE". + ** + ** Transient use only. Tuning parameters should not be used in + ** checked-in code. + */ + case SQLITE_TESTCTRL_TUNE: { + int id = va_arg(ap, int); + int *piValue = va_arg(ap, int*); + if( id>0 && id<=SQLITE_NTUNE ){ + Tuning(id) = *piValue; + }else if( id<0 && id>=-SQLITE_NTUNE ){ + *piValue = Tuning(-id); + }else{ + rc = SQLITE_NOTFOUND; + } + break; + } +#endif } va_end(ap); #endif /* SQLITE_UNTESTABLE */ return rc; } +/* +** The Pager stores the Database filename, Journal filename, and WAL filename +** consecutively in memory, in that order. The database filename is prefixed +** by four zero bytes. Locate the start of the database filename by searching +** backwards for the first byte following four consecutive zero bytes. +** +** This only works if the filename passed in was obtained from the Pager. +*/ +static const char *databaseName(const char *zName){ + while( zName[-1]!=0 || zName[-2]!=0 || zName[-3]!=0 || zName[-4]!=0 ){ + zName--; + } + return zName; +} + +/* +** Append text z[] to the end of p[]. Return a pointer to the first +** character after then zero terminator on the new text in p[]. +*/ +static char *appendText(char *p, const char *z){ + size_t n = strlen(z); + memcpy(p, z, n+1); + return p+n+1; +} + +/* +** Allocate memory to hold names for a database, journal file, WAL file, +** and query parameters. The pointer returned is valid for use by +** sqlite3_filename_database() and sqlite3_uri_parameter() and related +** functions. +** +** Memory layout must be compatible with that generated by the pager +** and expected by sqlite3_uri_parameter() and databaseName(). +*/ +SQLITE_API const char *sqlite3_create_filename( + const char *zDatabase, + const char *zJournal, + const char *zWal, + int nParam, + const char **azParam +){ + sqlite3_int64 nByte; + int i; + char *pResult, *p; + nByte = strlen(zDatabase) + strlen(zJournal) + strlen(zWal) + 10; + for(i=0; i0 ){ zFilename += sqlite3Strlen30(zFilename) + 1; - if( x==0 ) return zFilename; zFilename += sqlite3Strlen30(zFilename) + 1; } - return 0; + return zFilename[0] ? zFilename : 0; } /* @@ -150836,6 +181047,40 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64( return bDflt; } +/* +** Translate a filename that was handed to a VFS routine into the corresponding +** database, journal, or WAL file. +** +** It is an error to pass this routine a filename string that was not +** passed into the VFS from the SQLite core. Doing so is similar to +** passing free() a pointer that was not obtained from malloc() - it is +** an error that we cannot easily detect but that will likely cause memory +** corruption. +*/ +SQLITE_API const char *sqlite3_filename_database(const char *zFilename){ + if( zFilename==0 ) return 0; + return databaseName(zFilename); +} +SQLITE_API const char *sqlite3_filename_journal(const char *zFilename){ + if( zFilename==0 ) return 0; + zFilename = databaseName(zFilename); + zFilename += sqlite3Strlen30(zFilename) + 1; + while( ALWAYS(zFilename) && zFilename[0] ){ + zFilename += sqlite3Strlen30(zFilename) + 1; + zFilename += sqlite3Strlen30(zFilename) + 1; + } + return zFilename + 1; +} +SQLITE_API const char *sqlite3_filename_wal(const char *zFilename){ +#ifdef SQLITE_OMIT_WAL + return 0; +#else + zFilename = sqlite3_filename_journal(zFilename); + if( zFilename ) zFilename += sqlite3Strlen30(zFilename) + 1; + return zFilename; +#endif +} + /* ** Return the Btree pointer identified by zDbName. Return NULL if not found. */ @@ -150844,6 +181089,24 @@ SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3 *db, const char *zDbName){ return iDb<0 ? 0 : db->aDb[iDb].pBt; } +/* +** Return the name of the N-th database schema. Return NULL if N is out +** of range. +*/ +SQLITE_API const char *sqlite3_db_name(sqlite3 *db, int N){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + if( N<0 || N>=db->nDb ){ + return 0; + }else{ + return db->aDb[N].zDbSName; + } +} + /* ** Return the filename of the database associated with a database ** connection. @@ -150878,11 +181141,11 @@ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName){ #ifdef SQLITE_ENABLE_SNAPSHOT /* -** Obtain a snapshot handle for the snapshot of database zDb currently +** Obtain a snapshot handle for the snapshot of database zDb currently ** being read by handle db. */ SQLITE_API int sqlite3_snapshot_get( - sqlite3 *db, + sqlite3 *db, const char *zDb, sqlite3_snapshot **ppSnapshot ){ @@ -150900,8 +181163,8 @@ SQLITE_API int sqlite3_snapshot_get( int iDb = sqlite3FindDbName(db, zDb); if( iDb==0 || iDb>1 ){ Btree *pBt = db->aDb[iDb].pBt; - if( 0==sqlite3BtreeIsInTrans(pBt) ){ - rc = sqlite3BtreeBeginTrans(pBt, 0); + if( SQLITE_TXN_WRITE!=sqlite3BtreeTxnState(pBt) ){ + rc = sqlite3BtreeBeginTrans(pBt, 0, 0); if( rc==SQLITE_OK ){ rc = sqlite3PagerSnapshotGet(sqlite3BtreePager(pBt), ppSnapshot); } @@ -150915,11 +181178,11 @@ SQLITE_API int sqlite3_snapshot_get( } /* -** Open a read-transaction on the snapshot idendified by pSnapshot. +** Open a read-transaction on the snapshot identified by pSnapshot. */ SQLITE_API int sqlite3_snapshot_open( - sqlite3 *db, - const char *zDb, + sqlite3 *db, + const char *zDb, sqlite3_snapshot *pSnapshot ){ int rc = SQLITE_ERROR; @@ -150936,11 +181199,29 @@ SQLITE_API int sqlite3_snapshot_open( iDb = sqlite3FindDbName(db, zDb); if( iDb==0 || iDb>1 ){ Btree *pBt = db->aDb[iDb].pBt; - if( 0==sqlite3BtreeIsInReadTrans(pBt) ){ - rc = sqlite3PagerSnapshotOpen(sqlite3BtreePager(pBt), pSnapshot); + if( sqlite3BtreeTxnState(pBt)!=SQLITE_TXN_WRITE ){ + Pager *pPager = sqlite3BtreePager(pBt); + int bUnlock = 0; + if( sqlite3BtreeTxnState(pBt)!=SQLITE_TXN_NONE ){ + if( db->nVdbeActive==0 ){ + rc = sqlite3PagerSnapshotCheck(pPager, pSnapshot); + if( rc==SQLITE_OK ){ + bUnlock = 1; + rc = sqlite3BtreeCommit(pBt); + } + } + }else{ + rc = SQLITE_OK; + } if( rc==SQLITE_OK ){ - rc = sqlite3BtreeBeginTrans(pBt, 0); - sqlite3PagerSnapshotOpen(sqlite3BtreePager(pBt), 0); + rc = sqlite3PagerSnapshotOpen(pPager, pSnapshot); + } + if( rc==SQLITE_OK ){ + rc = sqlite3BtreeBeginTrans(pBt, 0, 0); + sqlite3PagerSnapshotOpen(pPager, 0); + } + if( bUnlock ){ + sqlite3PagerSnapshotUnlock(pPager); } } } @@ -150957,8 +181238,8 @@ SQLITE_API int sqlite3_snapshot_open( */ SQLITE_API int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb){ int rc = SQLITE_ERROR; - int iDb; #ifndef SQLITE_OMIT_WAL + int iDb; #ifdef SQLITE_ENABLE_API_ARMOR if( !sqlite3SafetyCheckOk(db) ){ @@ -150970,8 +181251,8 @@ SQLITE_API int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb){ iDb = sqlite3FindDbName(db, zDb); if( iDb==0 || iDb>1 ){ Btree *pBt = db->aDb[iDb].pBt; - if( 0==sqlite3BtreeIsInReadTrans(pBt) ){ - rc = sqlite3BtreeBeginTrans(pBt, 0); + if( SQLITE_TXN_NONE==sqlite3BtreeTxnState(pBt) ){ + rc = sqlite3BtreeBeginTrans(pBt, 0, 0); if( rc==SQLITE_OK ){ rc = sqlite3PagerSnapshotRecover(sqlite3BtreePager(pBt)); sqlite3BtreeCommit(pBt); @@ -151003,7 +181284,7 @@ SQLITE_API int sqlite3_compileoption_used(const char *zOptName){ int i, n; int nOpt; const char **azCompileOpt; - + #if SQLITE_ENABLE_API_ARMOR if( zOptName==0 ){ (void)SQLITE_MISUSE_BKPT; @@ -151016,7 +181297,7 @@ SQLITE_API int sqlite3_compileoption_used(const char *zOptName){ if( sqlite3StrNICmp(zOptName, "SQLITE_", 7)==0 ) zOptName += 7; n = sqlite3Strlen30(zOptName); - /* Since nOpt is normally in single digits, a linear search is + /* Since nOpt is normally in single digits, a linear search is ** adequate. No need for a binary search. */ for(i=0; ixUnlockNotify!=db->xUnlockNotify; + pp=&sqlite3BlockedList; + *pp && (*pp)->xUnlockNotify!=db->xUnlockNotify; pp=&(*pp)->pNextBlocked ); db->pNextBlocked = *pp; @@ -151155,20 +181436,20 @@ static void addToBlockedList(sqlite3 *db){ } /* -** Obtain the STATIC_MASTER mutex. +** Obtain the STATIC_MAIN mutex. */ static void enterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)); checkListProperties(0); } /* -** Release the STATIC_MASTER mutex. +** Release the STATIC_MAIN mutex. */ static void leaveMutex(void){ assertMutexHeld(); checkListProperties(0); - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)); } /* @@ -151209,9 +181490,9 @@ SQLITE_API int sqlite3_unlock_notify( db->xUnlockNotify = 0; db->pUnlockArg = 0; }else if( 0==db->pBlockingConnection ){ - /* The blocking transaction has been concluded. Or there never was a + /* The blocking transaction has been concluded. Or there never was a ** blocking transaction. In either case, invoke the notify callback - ** immediately. + ** immediately. */ xNotify(&pArg, 1); }else{ @@ -151237,7 +181518,7 @@ SQLITE_API int sqlite3_unlock_notify( } /* -** This function is called while stepping or preparing a statement +** This function is called while stepping or preparing a statement ** associated with connection db. The operation will return SQLITE_LOCKED ** to the user because it requires a lock that will not be available ** until connection pBlocker concludes its current transaction. @@ -151253,7 +181534,7 @@ SQLITE_PRIVATE void sqlite3ConnectionBlocked(sqlite3 *db, sqlite3 *pBlocker){ /* ** This function is called when -** the transaction opened by database db has just finished. Locks held +** the transaction opened by database db has just finished. Locks held ** by database connection db have been released. ** ** This function loops through each entry in the blocked connections @@ -151279,7 +181560,7 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){ void *aStatic[16]; /* Starter space for aArg[]. No malloc required */ aArg = aStatic; - enterMutex(); /* Enter STATIC_MASTER mutex */ + enterMutex(); /* Enter STATIC_MAIN mutex */ /* This loop runs once for each entry in the blocked-connections list. */ for(pp=&sqlite3BlockedList; *pp; /* no-op */ ){ @@ -151313,7 +181594,7 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){ }else{ /* This occurs when the array of context pointers that need to ** be passed to the unlock-notify callback is larger than the - ** aStatic[] array allocated on the stack and the attempt to + ** aStatic[] array allocated on the stack and the attempt to ** allocate a larger array from the heap has failed. ** ** This is a difficult situation to handle. Returning an error @@ -151321,17 +181602,17 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){ ** is returned the transaction on connection db will still be ** closed and the unlock-notify callbacks on blocked connections ** will go unissued. This might cause the application to wait - ** indefinitely for an unlock-notify callback that will never + ** indefinitely for an unlock-notify callback that will never ** arrive. ** ** Instead, invoke the unlock-notify callback with the context ** array already accumulated. We can then clear the array and - ** begin accumulating any further context pointers without + ** begin accumulating any further context pointers without ** requiring any dynamic allocation. This is sub-optimal because ** it means that instead of one callback with a large array of ** context pointers the application will receive two or more ** callbacks with smaller arrays of context pointers, which will - ** reduce the applications ability to prioritize multiple + ** reduce the applications ability to prioritize multiple ** connections. But it is the best that can be done under the ** circumstances. */ @@ -151362,11 +181643,11 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){ xUnlockNotify(aArg, nArg); } sqlite3_free(aDyn); - leaveMutex(); /* Leave STATIC_MASTER mutex */ + leaveMutex(); /* Leave STATIC_MAIN mutex */ } /* -** This is called when the database connection passed as an argument is +** This is called when the database connection passed as an argument is ** being closed. The connection is removed from the blocked list. */ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ @@ -151443,7 +181724,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ ** A doclist (document list) holds a docid-sorted list of hits for a ** given term. Doclists hold docids and associated token positions. ** A docid is the unique integer identifier for a single document. -** A position is the index of a word within the document. The first +** A position is the index of a word within the document. The first ** word of the document has a position of 0. ** ** FTS3 used to optionally store character offsets using a compile-time @@ -151468,7 +181749,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ ** ** Here, array { X } means zero or more occurrences of X, adjacent in ** memory. A "position" is an index of a token in the token stream -** generated by the tokenizer. Note that POS_END and POS_COLUMN occur +** generated by the tokenizer. Note that POS_END and POS_COLUMN occur ** in the same logical place as the position element, and act as sentinals ** ending a position list array. POS_END is 0. POS_COLUMN is 1. ** The positions numbers are not stored literally but rather as two more @@ -151492,7 +181773,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ ** a document record consists of a docid followed by a position-list and ** a doclist consists of one or more document records. ** -** A bare doclist omits the position information, becoming an +** A bare doclist omits the position information, becoming an ** array of varint-encoded docids. ** **** Segment leaf nodes **** @@ -151688,7 +181969,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ #ifndef _FTSINT_H #define _FTSINT_H -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) # define NDEBUG 1 #endif @@ -151711,7 +181992,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ /* If not building as part of the core, include sqlite3ext.h. */ #ifndef SQLITE_CORE -/* # include "sqlite3ext.h" */ +/* # include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT3 #endif @@ -151755,7 +182036,7 @@ SQLITE_EXTENSION_INIT3 ** When an fts3 table is created, it passes any arguments passed to ** the tokenizer clause of the CREATE VIRTUAL TABLE statement to the ** sqlite3_tokenizer_module.xCreate() function of the requested tokenizer -** implementation. The xCreate() function in turn returns an +** implementation. The xCreate() function in turn returns an ** sqlite3_tokenizer structure representing the specific tokenizer to ** be used for the fts3 table (customized by the tokenizer clause arguments). ** @@ -151787,7 +182068,7 @@ struct sqlite3_tokenizer_module { ** then argc is set to 2, and the argv[] array contains pointers ** to the strings "arg1" and "arg2". ** - ** This method should return either SQLITE_OK (0), or an SQLite error + ** This method should return either SQLITE_OK (0), or an SQLite error ** code. If SQLITE_OK is returned, then *ppTokenizer should be set ** to point at the newly created tokenizer structure. The generic ** sqlite3_tokenizer.pModule variable should not be initialized by @@ -151808,7 +182089,7 @@ struct sqlite3_tokenizer_module { /* ** Create a tokenizer cursor to tokenize an input buffer. The caller ** is responsible for ensuring that the input buffer remains valid - ** until the cursor is closed (using the xClose() method). + ** until the cursor is closed (using the xClose() method). */ int (*xOpen)( sqlite3_tokenizer *pTokenizer, /* Tokenizer object */ @@ -151817,7 +182098,7 @@ struct sqlite3_tokenizer_module { ); /* - ** Destroy an existing tokenizer cursor. The fts3 module calls this + ** Destroy an existing tokenizer cursor. The fts3 module calls this ** method exactly once for each successful call to xOpen(). */ int (*xClose)(sqlite3_tokenizer_cursor *pCursor); @@ -151828,7 +182109,7 @@ struct sqlite3_tokenizer_module { ** "OUT" variables identified below, or SQLITE_DONE to indicate that ** the end of the buffer has been reached, or an SQLite error code. ** - ** *ppToken should be set to point at a buffer containing the + ** *ppToken should be set to point at a buffer containing the ** normalized version of the token (i.e. after any case-folding and/or ** stemming has been performed). *pnBytes should be set to the length ** of this buffer in bytes. The input text that generated the token is @@ -151840,7 +182121,7 @@ struct sqlite3_tokenizer_module { ** ** The buffer *ppToken is set to point at is managed by the tokenizer ** implementation. It is only required to be valid until the next call - ** to xNext() or xClose(). + ** to xNext() or xClose(). */ /* TODO(shess) current implementation requires pInput to be ** nul-terminated. This should either be fixed, or pInput/nBytes @@ -151858,7 +182139,7 @@ struct sqlite3_tokenizer_module { ** Methods below this point are only available if iVersion>=1. */ - /* + /* ** Configure the language id of a tokenizer cursor. */ int (*xLanguageid)(sqlite3_tokenizer_cursor *pCsr, int iLangid); @@ -151927,7 +182208,7 @@ struct Fts3Hash { } *ht; }; -/* Each element in the hash table is an instance of the following +/* Each element in the hash table is an instance of the following ** structure. All elements are stored on a single doubly-linked list. ** ** Again, this structure is intended to be opaque, but it can't really @@ -151946,10 +182227,10 @@ struct Fts3HashElem { ** (including the null-terminator, if any). Case ** is respected in comparisons. ** -** FTS3_HASH_BINARY pKey points to binary data nKey bytes long. +** FTS3_HASH_BINARY pKey points to binary data nKey bytes long. ** memcmp() is used to compare keys. ** -** A copy of the key is made if the copyKey parameter to fts3HashInit is 1. +** A copy of the key is made if the copyKey parameter to fts3HashInit is 1. */ #define FTS3_HASH_STRING 1 #define FTS3_HASH_BINARY 2 @@ -152002,7 +182283,7 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi /* ** This constant determines the maximum depth of an FTS expression tree -** that the library will create and use. FTS uses recursion to perform +** that the library will create and use. FTS uses recursion to perform ** various operations on the query tree, so the disadvantage of a large ** limit is that it may allow very large queries to use large amounts ** of stack space (perhaps causing a stack overflow). @@ -152020,11 +182301,11 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi #define FTS3_MERGE_COUNT 16 /* -** This is the maximum amount of data (in bytes) to store in the +** This is the maximum amount of data (in bytes) to store in the ** Fts3Table.pendingTerms hash table. Normally, the hash table is ** populated as documents are inserted/updated/deleted in a transaction ** and used to create a new segment when the transaction is committed. -** However if this limit is reached midway through a transaction, a new +** However if this limit is reached midway through a transaction, a new ** segment is created and the hash table cleared immediately. */ #define FTS3_MAX_PENDING_DATA (1*1024*1024) @@ -152050,10 +182331,12 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi */ #define FTS3_VARINT_MAX 10 +#define FTS3_BUFFER_PADDING 8 + /* ** FTS4 virtual tables may maintain multiple indexes - one index of all terms ** in the document set and zero or more prefix indexes. All indexes are stored -** as one or more b+-trees in the %_segments and %_segdir tables. +** as one or more b+-trees in the %_segments and %_segdir tables. ** ** It is possible to determine which index a b+-tree belongs to based on the ** value stored in the "%_segdir.level" column. Given this value L, the index @@ -152061,8 +182344,8 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi ** level values between 0 and 1023 (inclusive) belong to index 0, all levels ** between 1024 and 2047 to index 1, and so on. ** -** It is considered impossible for an index to use more than 1024 levels. In -** theory though this may happen, but only after at least +** It is considered impossible for an index to use more than 1024 levels. In +** theory though this may happen, but only after at least ** (FTS3_MERGE_COUNT^1024) separate flushes of the pending-terms tables. */ #define FTS3_SEGDIR_MAXLEVEL 1024 @@ -152080,11 +182363,23 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi ** Terminator values for position-lists and column-lists. */ #define POS_COLUMN (1) /* Column-list terminator */ -#define POS_END (0) /* Position-list terminator */ +#define POS_END (0) /* Position-list terminator */ + +/* +** The assert_fts3_nc() macro is similar to the assert() macro, except that it +** is used for assert() conditions that are true only if it can be +** guranteed that the database is not corrupt. +*/ +#ifdef SQLITE_DEBUG +SQLITE_API extern int sqlite3_fts3_may_be_corrupt; +# define assert_fts3_nc(x) assert(sqlite3_fts3_may_be_corrupt || (x)) +#else +# define assert_fts3_nc(x) assert(x) +#endif /* ** This section provides definitions to allow the -** FTS3 extension to be compiled outside of the +** FTS3 extension to be compiled outside of the ** amalgamation. */ #ifndef SQLITE_AMALGAMATION @@ -152092,17 +182387,18 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi ** Macros indicating that conditional expressions are always true or ** false. */ -#ifdef SQLITE_COVERAGE_TEST -# define ALWAYS(x) (1) -# define NEVER(X) (0) -#elif defined(SQLITE_DEBUG) -# define ALWAYS(x) sqlite3Fts3Always((x)!=0) -# define NEVER(x) sqlite3Fts3Never((x)!=0) -SQLITE_PRIVATE int sqlite3Fts3Always(int b); -SQLITE_PRIVATE int sqlite3Fts3Never(int b); +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) +# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1 +#endif +#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS) +# define ALWAYS(X) (1) +# define NEVER(X) (0) +#elif !defined(NDEBUG) +# define ALWAYS(X) ((X)?1:(assert(0),0)) +# define NEVER(X) ((X)?(assert(0),1):0) #else -# define ALWAYS(x) (x) -# define NEVER(x) (x) +# define ALWAYS(X) (X) +# define NEVER(X) (X) #endif /* @@ -152122,7 +182418,7 @@ typedef sqlite3_int64 i64; /* 8-byte signed integer */ /* ** Activate assert() only if SQLITE_TEST is enabled. */ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) # define NDEBUG 1 #endif @@ -152137,6 +182433,11 @@ typedef sqlite3_int64 i64; /* 8-byte signed integer */ # define TESTONLY(X) #endif +#define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) +#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) + +#define deliberate_fall_through + #endif /* SQLITE_AMALGAMATION */ #ifdef SQLITE_DEBUG @@ -152180,9 +182481,10 @@ struct Fts3Table { char *zLanguageid; /* languageid=xxx option, or NULL */ int nAutoincrmerge; /* Value configured by 'automerge' */ u32 nLeafAdd; /* Number of leaf blocks added this trans */ + int bLock; /* Used to prevent recursive content= tbls */ - /* Precompiled statements used by the implementation. Each of these - ** statements is run and reset within a single virtual table API call. + /* Precompiled statements used by the implementation. Each of these + ** statements is run and reset within a single virtual table API call. */ sqlite3_stmt *aStmt[40]; sqlite3_stmt *pSeekStmt; /* Cache for fts3CursorSeekStmt() */ @@ -152200,8 +182502,8 @@ struct Fts3Table { char *zSegmentsTbl; /* Name of %_segments table */ sqlite3_blob *pSegments; /* Blob handle open on %_segments table */ - /* - ** The following array of hash tables is used to buffer pending index + /* + ** The following array of hash tables is used to buffer pending index ** updates during transactions. All pending updates buffered at any one ** time must share a common language-id (see the FTS4 langid= feature). ** The current language id is stored in variable iPrevLangid. @@ -152211,10 +182513,10 @@ struct Fts3Table { ** terms that appear in the document set. Each subsequent index in aIndex[] ** is an index of prefixes of a specific length. ** - ** Variable nPendingData contains an estimate the memory consumed by the + ** Variable nPendingData contains an estimate the memory consumed by the ** pending data structures, including hash table overhead, but not including ** malloc overhead. When nPendingData exceeds nMaxPendingData, all hash - ** tables are flushed to disk. Variable iPrevDocid is the docid of the most + ** tables are flushed to disk. Variable iPrevDocid is the docid of the most ** recently inserted record. */ int nIndex; /* Size of aIndex[] */ @@ -152238,13 +182540,23 @@ struct Fts3Table { int mxSavepoint; /* Largest valid xSavepoint integer */ #endif -#ifdef SQLITE_TEST +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) /* True to disable the incremental doclist optimization. This is controled ** by special insert command 'test-no-incr-doclist'. */ int bNoIncrDoclist; + + /* Number of segments in a level */ + int nMergeCount; #endif }; +/* Macro to find the number of segments to merge */ +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) +# define MergeCount(P) ((P)->nMergeCount) +#else +# define MergeCount(P) FTS3_MERGE_COUNT +#endif + /* ** When the core wants to read from the virtual table, it creates a ** virtual table cursor (an instance of the following structure) using @@ -152287,10 +182599,10 @@ struct Fts3Cursor { ** ** CREATE VIRTUAL TABLE ex1 USING fts3(a,b,c,d); ** SELECT docid FROM ex1 WHERE b MATCH 'one two three'; -** +** ** Because the LHS of the MATCH operator is 2nd column "b", ** Fts3Cursor.eSearch will be set to FTS3_FULLTEXT_SEARCH+1. (+0 for a, -** +1 for b, +2 for c, +3 for d.) If the LHS of MATCH were "ex1" +** +1 for b, +2 for c, +3 for d.) If the LHS of MATCH were "ex1" ** indicating that all columns should be searched, ** then eSearch would be set to FTS3_FULLTEXT_SEARCH+4. */ @@ -152349,8 +182661,8 @@ struct Fts3Phrase { char *pOrPoslist; i64 iOrDocid; - /* Variables below this point are populated by fts3_expr.c when parsing - ** a MATCH expression. Everything above is part of the evaluation phase. + /* Variables below this point are populated by fts3_expr.c when parsing + ** a MATCH expression. Everything above is part of the evaluation phase. */ int nToken; /* Number of tokens in the phrase */ int iColumn; /* Index of column this phrase must match */ @@ -152360,10 +182672,10 @@ struct Fts3Phrase { /* ** A tree of these objects forms the RHS of a MATCH operator. ** -** If Fts3Expr.eType is FTSQUERY_PHRASE and isLoaded is true, then aDoclist -** points to a malloced buffer, size nDoclist bytes, containing the results -** of this phrase query in FTS3 doclist format. As usual, the initial -** "Length" field found in doclists stored on disk is omitted from this +** If Fts3Expr.eType is FTSQUERY_PHRASE and isLoaded is true, then aDoclist +** points to a malloced buffer, size nDoclist bytes, containing the results +** of this phrase query in FTS3 doclist format. As usual, the initial +** "Length" field found in doclists stored on disk is omitted from this ** buffer. ** ** Variable aMI is used only for FTSQUERY_NEAR nodes to store the global @@ -152375,7 +182687,7 @@ struct Fts3Phrase { ** aMI[iCol*3 + 1] = Number of occurrences ** aMI[iCol*3 + 2] = Number of rows containing at least one instance ** -** The aMI array is allocated using sqlite3_malloc(). It should be freed +** The aMI array is allocated using sqlite3_malloc(). It should be freed ** when the expression node is. */ struct Fts3Expr { @@ -152399,7 +182711,7 @@ struct Fts3Expr { /* ** Candidate values for Fts3Query.eType. Note that the order of the first -** four values is in order of precedence when parsing expressions. For +** four values is in order of precedence when parsing expressions. For ** example, the following: ** ** "a OR b AND c NOT d NEAR e" @@ -152456,7 +182768,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStart(Fts3Table*, Fts3MultiSegReader*, Ft SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(Fts3Table *, Fts3MultiSegReader *); SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish(Fts3MultiSegReader *); -SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(Fts3Table *, +SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(Fts3Table *, int, int, int, const char *, int, int, int, Fts3MultiSegReader *); /* Flags allowed as part of the 4th argument to SegmentReaderIterate() */ @@ -152482,7 +182794,7 @@ struct Fts3MultiSegReader { int nAdvance; /* How many seg-readers to advance */ Fts3SegFilter *pFilter; /* Pointer to filter object */ char *aBuffer; /* Buffer to merge doclists in */ - int nBuffer; /* Allocated size of aBuffer[] in bytes */ + i64 nBuffer; /* Allocated size of aBuffer[] in bytes */ int iColFilter; /* If >=0, filter for this column */ int bRestart; @@ -152508,6 +182820,8 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table*,int,int); SQLITE_PRIVATE void sqlite3Fts3ErrMsg(char**,const char*,...); SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *, sqlite3_int64); SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *, sqlite_int64 *); +SQLITE_PRIVATE int sqlite3Fts3GetVarintU(const char *, sqlite_uint64 *); +SQLITE_PRIVATE int sqlite3Fts3GetVarintBounded(const char*,const char*,sqlite3_int64*); SQLITE_PRIVATE int sqlite3Fts3GetVarint32(const char *, int *); SQLITE_PRIVATE int sqlite3Fts3VarintLen(sqlite3_uint64); SQLITE_PRIVATE void sqlite3Fts3Dequote(char *); @@ -152516,11 +182830,12 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *); SQLITE_PRIVATE int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *); SQLITE_PRIVATE void sqlite3Fts3CreateStatTable(int*, Fts3Table*); SQLITE_PRIVATE int sqlite3Fts3EvalTestDeferred(Fts3Cursor *pCsr, int *pRc); +SQLITE_PRIVATE int sqlite3Fts3ReadInt(const char *z, int *pnOut); /* fts3_tokenizer.c */ SQLITE_PRIVATE const char *sqlite3Fts3NextToken(const char *, int *); SQLITE_PRIVATE int sqlite3Fts3InitHashTable(sqlite3 *, Fts3Hash *, const char *); -SQLITE_PRIVATE int sqlite3Fts3InitTokenizer(Fts3Hash *pHash, const char *, +SQLITE_PRIVATE int sqlite3Fts3InitTokenizer(Fts3Hash *pHash, const char *, sqlite3_tokenizer **, char ** ); SQLITE_PRIVATE int sqlite3Fts3IsIdChar(char); @@ -152542,6 +182857,7 @@ SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *); SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash*); SQLITE_PRIVATE int sqlite3Fts3InitTerm(sqlite3 *db); #endif +SQLITE_PRIVATE void *sqlite3Fts3MallocZero(i64 nByte); SQLITE_PRIVATE int sqlite3Fts3OpenTokenizer(sqlite3_tokenizer *, int, const char *, int, sqlite3_tokenizer_cursor ** @@ -152556,12 +182872,12 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart( Fts3Table*, Fts3MultiSegReader*, int, const char*, int); SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext( Fts3Table *, Fts3MultiSegReader *, sqlite3_int64 *, char **, int *); -SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol, char **); +SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol, char **); SQLITE_PRIVATE int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *); SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr); /* fts3_tokenize_vtab.c */ -SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3*, Fts3Hash *); +SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3*, Fts3Hash *, void(*xDestroy)(void*)); /* fts3_unicode2.c (functions generated by parsing unicode text files) */ #ifndef SQLITE_DISABLE_FTS3_UNICODE @@ -152570,6 +182886,8 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int); SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int); #endif +SQLITE_PRIVATE int sqlite3Fts3ExprIterate(Fts3Expr*, int (*x)(Fts3Expr*,int,void*), void*); + #endif /* !SQLITE_CORE || SQLITE_ENABLE_FTS3 */ #endif /* _FTSINT_H */ @@ -152589,24 +182907,33 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int); /* #include */ /* #include "fts3.h" */ -#ifndef SQLITE_CORE +#ifndef SQLITE_CORE /* # include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT1 #endif +typedef struct Fts3HashWrapper Fts3HashWrapper; +struct Fts3HashWrapper { + Fts3Hash hash; /* Hash table */ + int nRef; /* Number of pointers to this object */ +}; + static int fts3EvalNext(Fts3Cursor *pCsr); static int fts3EvalStart(Fts3Cursor *pCsr); static int fts3TermSegReaderCursor( Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **); -#ifndef SQLITE_AMALGAMATION -# if defined(SQLITE_DEBUG) -SQLITE_PRIVATE int sqlite3Fts3Always(int b) { assert( b ); return b; } -SQLITE_PRIVATE int sqlite3Fts3Never(int b) { assert( !b ); return b; } -# endif +/* +** This variable is set to false when running tests for which the on disk +** structures should not be corrupt. Otherwise, true. If it is false, extra +** assert() conditions in the fts3 code are activated - conditions that are +** only true if it is guaranteed that the fts3 database is not corrupt. +*/ +#ifdef SQLITE_DEBUG +SQLITE_API int sqlite3_fts3_may_be_corrupt = 1; #endif -/* +/* ** Write a 64-bit variable-length integer to memory starting at p[0]. ** The length of data written will be between 1 and FTS3_VARINT_MAX bytes. ** The number of bytes written is returned. @@ -152624,18 +182951,13 @@ SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *p, sqlite_int64 v){ } #define GETVARINT_STEP(v, ptr, shift, mask1, mask2, var, ret) \ - v = (v & mask1) | ( (*ptr++) << shift ); \ + v = (v & mask1) | ( (*(const unsigned char*)(ptr++)) << shift ); \ if( (v & mask2)==0 ){ var = v; return ret; } #define GETVARINT_INIT(v, ptr, shift, mask1, mask2, var, ret) \ v = (*ptr++); \ if( (v & mask2)==0 ){ var = v; return ret; } -/* -** Read a 64-bit variable-length integer from memory starting at p[0]. -** Return the number of bytes read, or 0 on error. -** The value is stored in *v. -*/ -SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){ +SQLITE_PRIVATE int sqlite3Fts3GetVarintU(const char *pBuf, sqlite_uint64 *v){ const unsigned char *p = (const unsigned char*)pBuf; const unsigned char *pStart = p; u32 a; @@ -152658,24 +182980,60 @@ SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){ } /* -** Similar to sqlite3Fts3GetVarint(), except that the output is truncated to +** Read a 64-bit variable-length integer from memory starting at p[0]. +** Return the number of bytes read, or 0 on error. +** The value is stored in *v. +*/ +SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){ + return sqlite3Fts3GetVarintU(pBuf, (sqlite3_uint64*)v); +} + +/* +** Read a 64-bit variable-length integer from memory starting at p[0] and +** not extending past pEnd[-1]. +** Return the number of bytes read, or 0 on error. +** The value is stored in *v. +*/ +SQLITE_PRIVATE int sqlite3Fts3GetVarintBounded( + const char *pBuf, + const char *pEnd, + sqlite_int64 *v +){ + const unsigned char *p = (const unsigned char*)pBuf; + const unsigned char *pStart = p; + const unsigned char *pX = (const unsigned char*)pEnd; + u64 b = 0; + int shift; + for(shift=0; shift<=63; shift+=7){ + u64 c = p=0 ); return 5; @@ -152716,7 +183074,7 @@ SQLITE_PRIVATE void sqlite3Fts3Dequote(char *z){ int iOut = 0; /* Index of next byte to write to output */ /* If the first byte was a '[', then the close-quote character is a ']' */ - if( quote=='[' ) quote = ']'; + if( quote=='[' ) quote = ']'; while( z[iIn] ){ if( z[iIn]==quote ){ @@ -152752,14 +183110,14 @@ static void fts3GetDeltaVarint(char **pp, sqlite3_int64 *pVal){ ** varint is part of. */ static void fts3GetReverseVarint( - char **pp, - char *pStart, + char **pp, + char *pStart, sqlite3_int64 *pVal ){ sqlite3_int64 iVal; char *p; - /* Pointer p now points at the first byte past the varint we are + /* Pointer p now points at the first byte past the varint we are ** interested in. So, unless the doclist is corrupt, the 0x80 bit is ** clear on character p[-1]. */ for(p = (*pp)-2; p>=pStart && *p&0x80; p--); @@ -152846,13 +183204,18 @@ static int fts3DestroyMethod(sqlite3_vtab *pVtab){ sqlite3 *db = p->db; /* Database handle */ /* Drop the shadow tables */ - if( p->zContentTbl==0 ){ - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", zDb, p->zName); - } - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", zDb,p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", zDb, p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", zDb, p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", zDb, p->zName); + fts3DbExec(&rc, db, + "DROP TABLE IF EXISTS %Q.'%q_segments';" + "DROP TABLE IF EXISTS %Q.'%q_segdir';" + "DROP TABLE IF EXISTS %Q.'%q_docsize';" + "DROP TABLE IF EXISTS %Q.'%q_stat';" + "%s DROP TABLE IF EXISTS %Q.'%q_content';", + zDb, p->zName, + zDb, p->zName, + zDb, p->zName, + zDb, p->zName, + (p->zContentTbl ? "--" : ""), zDb,p->zName + ); /* If everything has worked, invoke fts3DisconnectMethod() to free the ** memory associated with the Fts3Table structure and return SQLITE_OK. @@ -152867,7 +183230,7 @@ static int fts3DestroyMethod(sqlite3_vtab *pVtab){ ** passed as the first argument. This is done as part of the xConnect() ** and xCreate() methods. ** -** If *pRc is non-zero when this function is called, it is a no-op. +** If *pRc is non-zero when this function is called, it is a no-op. ** Otherwise, if an error occurs, an SQLite error code is stored in *pRc ** before returning. */ @@ -152890,7 +183253,7 @@ static void fts3DeclareVtab(int *pRc, Fts3Table *p){ /* Create the whole "CREATE TABLE" statement to pass to SQLite */ zSql = sqlite3_mprintf( - "CREATE TABLE x(%s %Q HIDDEN, docid HIDDEN, %Q HIDDEN)", + "CREATE TABLE x(%s %Q HIDDEN, docid HIDDEN, %Q HIDDEN)", zCols, p->zName, zLanguageid ); if( !zCols || !zSql ){ @@ -152909,7 +183272,7 @@ static void fts3DeclareVtab(int *pRc, Fts3Table *p){ ** Create the %_stat table if it does not already exist. */ SQLITE_PRIVATE void sqlite3Fts3CreateStatTable(int *pRc, Fts3Table *p){ - fts3DbExec(pRc, p->db, + fts3DbExec(pRc, p->db, "CREATE TABLE IF NOT EXISTS %Q.'%q_stat'" "(id INTEGER PRIMARY KEY, value BLOB);", p->zDb, p->zName @@ -152945,9 +183308,9 @@ static int fts3CreateTables(Fts3Table *p){ zContentCols = sqlite3_mprintf("%z, langid", zContentCols, zLanguageid); } if( zContentCols==0 ) rc = SQLITE_NOMEM; - + /* Create the content table */ - fts3DbExec(&rc, db, + fts3DbExec(&rc, db, "CREATE TABLE %Q.'%q_content'(%s)", p->zDb, p->zName, zContentCols ); @@ -152955,11 +183318,11 @@ static int fts3CreateTables(Fts3Table *p){ } /* Create other tables */ - fts3DbExec(&rc, db, + fts3DbExec(&rc, db, "CREATE TABLE %Q.'%q_segments'(blockid INTEGER PRIMARY KEY, block BLOB);", p->zDb, p->zName ); - fts3DbExec(&rc, db, + fts3DbExec(&rc, db, "CREATE TABLE %Q.'%q_segdir'(" "level INTEGER," "idx INTEGER," @@ -152972,7 +183335,7 @@ static int fts3CreateTables(Fts3Table *p){ p->zDb, p->zName ); if( p->bHasDocsize ){ - fts3DbExec(&rc, db, + fts3DbExec(&rc, db, "CREATE TABLE %Q.'%q_docsize'(docid INTEGER PRIMARY KEY, size BLOB);", p->zDb, p->zName ); @@ -152987,7 +183350,7 @@ static int fts3CreateTables(Fts3Table *p){ /* ** Store the current database page-size in bytes in p->nPgsz. ** -** If *pRc is non-zero when this function is called, it is a no-op. +** If *pRc is non-zero when this function is called, it is a no-op. ** Otherwise, if an error occurs, an SQLite error code is stored in *pRc ** before returning. */ @@ -152996,7 +183359,7 @@ static void fts3DatabasePageSize(int *pRc, Fts3Table *p){ int rc; /* Return code */ char *zSql; /* SQL text "PRAGMA %Q.page_size" */ sqlite3_stmt *pStmt; /* Compiled "PRAGMA %Q.page_size" statement */ - + zSql = sqlite3_mprintf("PRAGMA %Q.page_size", p->zDb); if( !zSql ){ rc = SQLITE_NOMEM; @@ -153022,11 +183385,11 @@ static void fts3DatabasePageSize(int *pRc, Fts3Table *p){ ** ** = ** -** There may not be whitespace surrounding the "=" character. The +** There may not be whitespace surrounding the "=" character. The ** term may be quoted, but the may not. */ static int fts3IsSpecialColumn( - const char *z, + const char *z, int *pnKey, char **pzValue ){ @@ -153084,10 +183447,10 @@ static void fts3Appendf( ** memory. */ static char *fts3QuoteId(char const *zInput){ - int nRet; + sqlite3_int64 nRet; char *zRet; nRet = 2 + (int)strlen(zInput)*2 + 1; - zRet = sqlite3_malloc(nRet); + zRet = sqlite3_malloc64(nRet); if( zRet ){ int i; char *z = zRet; @@ -153103,7 +183466,7 @@ static char *fts3QuoteId(char const *zInput){ } /* -** Return a list of comma separated SQL expressions and a FROM clause that +** Return a list of comma separated SQL expressions and a FROM clause that ** could be used in a SELECT statement such as the following: ** ** SELECT FROM %_content AS x ... @@ -153154,7 +183517,7 @@ static char *fts3ReadExprList(Fts3Table *p, const char *zFunc, int *pRc){ fts3Appendf(pRc, &zRet, ", x.%Q", p->zLanguageid); } } - fts3Appendf(pRc, &zRet, " FROM '%q'.'%q%s' AS x", + fts3Appendf(pRc, &zRet, " FROM '%q'.'%q%s' AS x", p->zDb, (p->zContentTbl ? p->zContentTbl : p->zName), (p->zContentTbl ? "" : "_content") @@ -153169,7 +183532,7 @@ static char *fts3ReadExprList(Fts3Table *p, const char *zFunc, int *pRc){ ** ** If argument zFunc is not NULL, then all but the first question mark ** is preceded by zFunc and an open bracket, and followed by a closed -** bracket. For example, if zFunc is "zip" and the FTS3 table has three +** bracket. For example, if zFunc is "zip" and the FTS3 table has three ** user-defined text columns, the following string is returned: ** ** "?, zip(?), zip(?), zip(?)" @@ -153204,13 +183567,29 @@ static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){ return zRet; } +/* +** Buffer z contains a positive integer value encoded as utf-8 text. +** Decode this value and store it in *pnOut, returning the number of bytes +** consumed. If an overflow error occurs return a negative value. +*/ +SQLITE_PRIVATE int sqlite3Fts3ReadInt(const char *z, int *pnOut){ + u64 iVal = 0; + int i; + for(i=0; z[i]>='0' && z[i]<='9'; i++){ + iVal = iVal*10 + (z[i] - '0'); + if( iVal>0x7FFFFFFF ) return -1; + } + *pnOut = (int)iVal; + return i; +} + /* ** This function interprets the string at (*pp) as a non-negative integer -** value. It reads the integer and sets *pnOut to the value read, then +** value. It reads the integer and sets *pnOut to the value read, then ** sets *pp to point to the byte immediately following the last byte of ** the integer value. ** -** Only decimal digits ('0'..'9') may be part of an integer value. +** Only decimal digits ('0'..'9') may be part of an integer value. ** ** If *pp does not being with a decimal digit SQLITE_ERROR is returned and ** the output value undefined. Otherwise SQLITE_OK is returned. @@ -153219,19 +183598,17 @@ static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){ */ static int fts3GobbleInt(const char **pp, int *pnOut){ const int MAX_NPREFIX = 10000000; - const char *p; /* Iterator pointer */ int nInt = 0; /* Output value */ - - for(p=*pp; p[0]>='0' && p[0]<='9'; p++){ - nInt = nInt * 10 + (p[0] - '0'); - if( nInt>MAX_NPREFIX ){ - nInt = 0; - break; - } + int nByte; + nByte = sqlite3Fts3ReadInt(*pp, &nInt); + if( nInt>MAX_NPREFIX ){ + nInt = 0; + } + if( nByte==0 ){ + return SQLITE_ERROR; } - if( p==*pp ) return SQLITE_ERROR; *pnOut = nInt; - *pp = p; + *pp += nByte; return SQLITE_OK; } @@ -153268,7 +183645,7 @@ static int fts3PrefixParameter( } } - aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex); + aIndex = sqlite3_malloc64(sizeof(struct Fts3Index) * nIndex); *apIndex = aIndex; if( !aIndex ){ return SQLITE_NOMEM; @@ -153331,7 +183708,7 @@ static int fts3ContentColumns( char **pzErr /* OUT: error message */ ){ int rc = SQLITE_OK; /* Return code */ - char *zSql; /* "SELECT *" statement on zTbl */ + char *zSql; /* "SELECT *" statement on zTbl */ sqlite3_stmt *pStmt = 0; /* Compiled version of zSql */ zSql = sqlite3_mprintf("SELECT * FROM %Q.%Q", zDb, zTbl); @@ -153347,7 +183724,7 @@ static int fts3ContentColumns( if( rc==SQLITE_OK ){ const char **azCol; /* Output array */ - int nStr = 0; /* Size of all column names (incl. 0x00) */ + sqlite3_int64 nStr = 0; /* Size of all column names (incl. 0x00) */ int nCol; /* Number of table columns */ int i; /* Used to iterate through columns */ @@ -153357,11 +183734,11 @@ static int fts3ContentColumns( nCol = sqlite3_column_count(pStmt); for(i=0; ihash; Fts3Table *p = 0; /* Pointer to allocated vtab */ int rc = SQLITE_OK; /* Return code */ int i; /* Iterator variable */ - int nByte; /* Size of allocation used for *p */ + sqlite3_int64 nByte; /* Size of allocation used for *p */ int iCol; /* Column index */ int nString = 0; /* Bytes required to hold all column names */ int nCol = 0; /* Number of columns in the FTS table */ @@ -153443,10 +183820,10 @@ static int fts3InitVtab( nName = (int)strlen(argv[2]) + 1; nByte = sizeof(const char *) * (argc-2); - aCol = (const char **)sqlite3_malloc(nByte); + aCol = (const char **)sqlite3_malloc64(nByte); if( aCol ){ memset((void*)aCol, 0, nByte); - azNotindexed = (char **)sqlite3_malloc(nByte); + azNotindexed = (char **)sqlite3_malloc64(nByte); } if( azNotindexed ){ memset(azNotindexed, 0, nByte); @@ -153473,9 +183850,9 @@ static int fts3InitVtab( char *zVal; /* Check if this is a tokenizer specification */ - if( !pTokenizer + if( !pTokenizer && strlen(z)>8 - && 0==sqlite3_strnicmp(z, "tokenize", 8) + && 0==sqlite3_strnicmp(z, "tokenize", 8) && 0==sqlite3Fts3IsIdChar(z[8]) ){ rc = sqlite3Fts3InitTokenizer(pHash, &z[9], &pTokenizer, pzErr); @@ -153535,8 +183912,8 @@ static int fts3InitVtab( break; case 4: /* ORDER */ - if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3)) - && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4)) + if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3)) + && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4)) ){ sqlite3Fts3ErrMsg(pzErr, "unrecognized order: %s", zVal); rc = SQLITE_ERROR; @@ -153587,17 +183964,17 @@ static int fts3InitVtab( ** TABLE statement, use all columns from the content table. */ if( rc==SQLITE_OK && zContent ){ - sqlite3_free(zCompress); - sqlite3_free(zUncompress); + sqlite3_free(zCompress); + sqlite3_free(zUncompress); zCompress = 0; zUncompress = 0; if( nCol==0 ){ - sqlite3_free((void*)aCol); + sqlite3_free((void*)aCol); aCol = 0; rc = fts3ContentColumns(db, argv[1], zContent,&aCol,&nCol,&nString,pzErr); /* If a languageid= option was specified, remove the language id - ** column from the aCol[] array. */ + ** column from the aCol[] array. */ if( rc==SQLITE_OK && zLanguageid ){ int j; for(j=0; j0 ){ @@ -153703,7 +184080,7 @@ static int fts3InitVtab( for(i=0; iazColumn[iCol], zNot, n) + && 0==sqlite3_strnicmp(p->azColumn[iCol], zNot, n) ){ p->abNotindexed[iCol] = 1; sqlite3_free(zNot); @@ -153727,7 +184104,7 @@ static int fts3InitVtab( p->zWriteExprlist = fts3WriteExprList(p, zCompress, &rc); if( rc!=SQLITE_OK ) goto fts3_init_out; - /* If this is an xCreate call, create the underlying tables in the + /* If this is an xCreate call, create the underlying tables in the ** database. TODO: For xConnect(), it could verify that said tables exist. */ if( isCreate ){ @@ -153746,6 +184123,10 @@ static int fts3InitVtab( fts3DatabasePageSize(&rc, p); p->nNodeSize = p->nPgsz-35; +#if defined(SQLITE_DEBUG)||defined(SQLITE_TEST) + p->nMergeCount = FTS3_MERGE_COUNT; +#endif + /* Declare the table schema to SQLite. */ fts3DeclareVtab(&rc, p); @@ -153823,11 +184204,11 @@ static void fts3SetUniqueFlag(sqlite3_index_info *pIdxInfo){ #endif } -/* +/* ** Implementation of the xBestIndex method for FTS3 tables. There ** are three possible strategies, in order of preference: ** -** 1. Direct lookup by rowid or docid. +** 1. Direct lookup by rowid or docid. ** 2. Full-text search using a MATCH operator on a non-docid column. ** 3. Linear scan of %_content table. */ @@ -153841,8 +184222,12 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ int iDocidLe = -1; /* Index of docid<=x constraint, if present */ int iIdx; + if( p->bLock ){ + return SQLITE_ERROR; + } + /* By default use a full table scan. This is an expensive option, - ** so search through the constraints to see if a more efficient + ** so search through the constraints to see if a more efficient ** strategy is possible. */ pInfo->idxNum = FTS3_FULLSCAN_SEARCH; @@ -153878,12 +184263,12 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ ** ** If there is more than one MATCH constraint available, use the first ** one encountered. If there is both a MATCH constraint and a direct - ** rowid/docid lookup, prefer the MATCH strategy. This is done even + ** rowid/docid lookup, prefer the MATCH strategy. This is done even ** though the rowid/docid lookup is faster than a MATCH query, selecting - ** it would lead to an "unable to use function MATCH in the requested + ** it would lead to an "unable to use function MATCH in the requested ** context" error. */ - if( pCons->op==SQLITE_INDEX_CONSTRAINT_MATCH + if( pCons->op==SQLITE_INDEX_CONSTRAINT_MATCH && pCons->iColumn>=0 && pCons->iColumn<=p->nColumn ){ pInfo->idxNum = FTS3_FULLTEXT_SEARCH + pCons->iColumn; @@ -153892,7 +184277,7 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ } /* Equality constraint on the langid column */ - if( pCons->op==SQLITE_INDEX_CONSTRAINT_EQ + if( pCons->op==SQLITE_INDEX_CONSTRAINT_EQ && pCons->iColumn==p->nColumn + 2 ){ iLangidCons = i; @@ -153920,22 +184305,22 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ if( iCons>=0 ){ pInfo->aConstraintUsage[iCons].argvIndex = iIdx++; pInfo->aConstraintUsage[iCons].omit = 1; - } + } if( iLangidCons>=0 ){ pInfo->idxNum |= FTS3_HAVE_LANGID; pInfo->aConstraintUsage[iLangidCons].argvIndex = iIdx++; - } + } if( iDocidGe>=0 ){ pInfo->idxNum |= FTS3_HAVE_DOCID_GE; pInfo->aConstraintUsage[iDocidGe].argvIndex = iIdx++; - } + } if( iDocidLe>=0 ){ pInfo->idxNum |= FTS3_HAVE_DOCID_LE; pInfo->aConstraintUsage[iDocidLe].argvIndex = iIdx++; - } + } /* Regardless of the strategy selected, FTS can deliver rows in rowid (or - ** docid) order. Both ascending and descending are possible. + ** docid) order. Both ascending and descending are possible. */ if( pInfo->nOrderBy==1 ){ struct sqlite3_index_orderby *pOrder = &pInfo->aOrderBy[0]; @@ -153962,7 +184347,7 @@ static int fts3OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ UNUSED_PARAMETER(pVTab); /* Allocate a buffer large enough for an Fts3Cursor structure. If the - ** allocation succeeds, zero it and return SQLITE_OK. Otherwise, + ** allocation succeeds, zero it and return SQLITE_OK. Otherwise, ** if the allocation fails, return SQLITE_NOMEM. */ *ppCsr = pCsr = (sqlite3_vtab_cursor *)sqlite3_malloc(sizeof(Fts3Cursor)); @@ -154039,7 +184424,11 @@ static int fts3CursorSeekStmt(Fts3Cursor *pCsr){ }else{ zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist); if( !zSql ) return SQLITE_NOMEM; - rc = sqlite3_prepare_v3(p->db, zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0); + p->bLock++; + rc = sqlite3_prepare_v3( + p->db, zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0 + ); + p->bLock--; sqlite3_free(zSql); } if( rc==SQLITE_OK ) pCsr->bSeekStmt = 1; @@ -154050,18 +184439,22 @@ static int fts3CursorSeekStmt(Fts3Cursor *pCsr){ /* ** Position the pCsr->pStmt statement so that it is on the row ** of the %_content table that contains the last match. Return -** SQLITE_OK on success. +** SQLITE_OK on success. */ static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){ int rc = SQLITE_OK; if( pCsr->isRequireSeek ){ rc = fts3CursorSeekStmt(pCsr); if( rc==SQLITE_OK ){ + Fts3Table *pTab = (Fts3Table*)pCsr->base.pVtab; + pTab->bLock++; sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId); pCsr->isRequireSeek = 0; if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){ + pTab->bLock--; return SQLITE_OK; }else{ + pTab->bLock--; rc = sqlite3_reset(pCsr->pStmt); if( rc==SQLITE_OK && ((Fts3Table *)pCsr->base.pVtab)->zContentTbl==0 ){ /* If no row was found and no error has occurred, then the %_content @@ -154082,7 +184475,7 @@ static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){ /* ** This function is used to process a single interior node when searching -** a b-tree for a term or term prefix. The node data is passed to this +** a b-tree for a term or term prefix. The node data is passed to this ** function via the zNode/nNode parameters. The term to search for is ** passed in zTerm/nTerm. ** @@ -154107,13 +184500,14 @@ static int fts3ScanInteriorNode( const char *zCsr = zNode; /* Cursor to iterate through node */ const char *zEnd = &zCsr[nNode];/* End of interior node buffer */ char *zBuffer = 0; /* Buffer to load terms into */ - int nAlloc = 0; /* Size of allocated buffer */ + i64 nAlloc = 0; /* Size of allocated buffer */ int isFirstTerm = 1; /* True when processing first term on page */ - sqlite3_int64 iChild; /* Block id of child node to descend to */ + u64 iChild; /* Block id of child node to descend to */ + int nBuffer = 0; /* Total term size */ - /* Skip over the 'height' varint that occurs at the start of every + /* Skip over the 'height' varint that occurs at the start of every ** interior node. Then load the blockid of the left-child of the b-tree - ** node into variable iChild. + ** node into variable iChild. ** ** Even if the data structure on disk is corrupted, this (reading two ** varints from the buffer) does not risk an overread. If zNode is a @@ -154124,35 +184518,38 @@ static int fts3ScanInteriorNode( ** table, then there are always 20 bytes of zeroed padding following the ** nNode bytes of content (see sqlite3Fts3ReadBlock() for details). */ - zCsr += sqlite3Fts3GetVarint(zCsr, &iChild); - zCsr += sqlite3Fts3GetVarint(zCsr, &iChild); + zCsr += sqlite3Fts3GetVarintU(zCsr, &iChild); + zCsr += sqlite3Fts3GetVarintU(zCsr, &iChild); if( zCsr>zEnd ){ return FTS_CORRUPT_VTAB; } - + while( zCsrnBuffer ){ + rc = FTS_CORRUPT_VTAB; + goto finish_scan; + } } isFirstTerm = 0; zCsr += fts3GetVarint32(zCsr, &nSuffix); - + assert( nPrefix>=0 && nSuffix>=0 ); - if( &zCsr[nSuffix]>zEnd ){ + if( nPrefix>zCsr-zNode || nSuffix>zEnd-zCsr || nSuffix==0 ){ rc = FTS_CORRUPT_VTAB; goto finish_scan; } - if( nPrefix+nSuffix>nAlloc ){ + if( (i64)nPrefix+nSuffix>nAlloc ){ char *zNew; - nAlloc = (nPrefix+nSuffix) * 2; - zNew = (char *)sqlite3_realloc(zBuffer, nAlloc); + nAlloc = ((i64)nPrefix+nSuffix) * 2; + zNew = (char *)sqlite3_realloc64(zBuffer, nAlloc); if( !zNew ){ rc = SQLITE_NOMEM; goto finish_scan; @@ -154166,8 +184563,8 @@ static int fts3ScanInteriorNode( /* Compare the term we are searching for with the term just loaded from ** the interior node. If the specified term is greater than or equal - ** to the term from the interior node, then all terms on the sub-tree - ** headed by node iChild are smaller than zTerm. No need to search + ** to the term from the interior node, then all terms on the sub-tree + ** headed by node iChild are smaller than zTerm. No need to search ** iChild. ** ** If the interior node term is larger than the specified term, then @@ -154175,20 +184572,20 @@ static int fts3ScanInteriorNode( */ cmp = memcmp(zTerm, zBuffer, (nBuffer>nTerm ? nTerm : nBuffer)); if( piFirst && (cmp<0 || (cmp==0 && nBuffer>nTerm)) ){ - *piFirst = iChild; + *piFirst = (i64)iChild; piFirst = 0; } if( piLast && cmp<0 ){ - *piLast = iChild; + *piLast = (i64)iChild; piLast = 0; } iChild++; }; - if( piFirst ) *piFirst = iChild; - if( piLast ) *piLast = iChild; + if( piFirst ) *piFirst = (i64)iChild; + if( piLast ) *piLast = (i64)iChild; finish_scan: sqlite3_free(zBuffer); @@ -154203,20 +184600,20 @@ static int fts3ScanInteriorNode( ** node for the range of leaf nodes that may contain the specified term ** or terms for which the specified term is a prefix. ** -** If piLeaf is not NULL, then *piLeaf is set to the blockid of the +** If piLeaf is not NULL, then *piLeaf is set to the blockid of the ** left-most leaf node in the tree that may contain the specified term. ** If piLeaf2 is not NULL, then *piLeaf2 is set to the blockid of the ** right-most leaf node that may contain a term for which the specified ** term is a prefix. ** -** It is possible that the range of returned leaf nodes does not contain -** the specified term or any terms for which it is a prefix. However, if the +** It is possible that the range of returned leaf nodes does not contain +** the specified term or any terms for which it is a prefix. However, if the ** segment does contain any such terms, they are stored within the identified ** range. Because this function only inspects interior segment nodes (and ** never loads leaf nodes into memory), it is not possible to be sure. ** ** If an error occurs, an error code other than SQLITE_OK is returned. -*/ +*/ static int fts3SelectLeaf( Fts3Table *p, /* Virtual table handle */ const char *zTerm, /* Term to select leaves for */ @@ -154233,7 +184630,7 @@ static int fts3SelectLeaf( fts3GetVarint32(zNode, &iHeight); rc = fts3ScanInteriorNode(zTerm, nTerm, zNode, nNode, piLeaf, piLeaf2); - assert( !piLeaf2 || !piLeaf || rc!=SQLITE_OK || (*piLeaf<=*piLeaf2) ); + assert_fts3_nc( !piLeaf2 || !piLeaf || rc!=SQLITE_OK || (*piLeaf<=*piLeaf2) ); if( rc==SQLITE_OK && iHeight>1 ){ char *zBlob = 0; /* Blob read from %_segments table */ @@ -154253,7 +184650,13 @@ static int fts3SelectLeaf( rc = sqlite3Fts3ReadBlock(p, piLeaf?*piLeaf:*piLeaf2, &zBlob, &nBlob, 0); } if( rc==SQLITE_OK ){ - rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2); + int iNewHeight = 0; + fts3GetVarint32(zBlob, &iNewHeight); + if( iNewHeight>=iHeight ){ + rc = FTS_CORRUPT_VTAB; + }else{ + rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2); + } } sqlite3_free(zBlob); } @@ -154262,7 +184665,7 @@ static int fts3SelectLeaf( } /* -** This function is used to create delta-encoded serialized lists of FTS3 +** This function is used to create delta-encoded serialized lists of FTS3 ** varints. Each call to this function appends a single varint to a list. */ static void fts3PutDeltaVarint( @@ -154270,17 +184673,17 @@ static void fts3PutDeltaVarint( sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */ sqlite3_int64 iVal /* Write this value to the list */ ){ - assert( iVal-*piPrev > 0 || (*piPrev==0 && iVal==0) ); + assert_fts3_nc( iVal-*piPrev > 0 || (*piPrev==0 && iVal==0) ); *pp += sqlite3Fts3PutVarint(*pp, iVal-*piPrev); *piPrev = iVal; } /* -** When this function is called, *ppPoslist is assumed to point to the +** When this function is called, *ppPoslist is assumed to point to the ** start of a position-list. After it returns, *ppPoslist points to the ** first byte after the position-list. ** -** A position list is list of positions (delta encoded) and columns for +** A position list is list of positions (delta encoded) and columns for ** a single document record of a doclist. So, in other words, this ** routine advances *ppPoslist so that it points to the next docid in ** the doclist, or to the first byte past the end of the doclist. @@ -154293,12 +184696,12 @@ static void fts3PoslistCopy(char **pp, char **ppPoslist){ char *pEnd = *ppPoslist; char c = 0; - /* The end of a position list is marked by a zero encoded as an FTS3 + /* The end of a position list is marked by a zero encoded as an FTS3 ** varint. A single POS_END (0) byte. Except, if the 0 byte is preceded by ** a byte with the 0x80 bit set, then it is not a varint 0, but the tail ** of some other, multi-byte, value. ** - ** The following while-loop moves pEnd to point to the first byte that is not + ** The following while-loop moves pEnd to point to the first byte that is not ** immediately preceded by a byte with the 0x80 bit set. Then increments ** pEnd once more so that it points to the byte immediately following the ** last byte in the position-list. @@ -154320,7 +184723,7 @@ static void fts3PoslistCopy(char **pp, char **ppPoslist){ } /* -** When this function is called, *ppPoslist is assumed to point to the +** When this function is called, *ppPoslist is assumed to point to the ** start of a column-list. After it returns, *ppPoslist points to the ** to the terminator (POS_COLUMN or POS_END) byte of the column-list. ** @@ -154358,10 +184761,11 @@ static void fts3ColumnlistCopy(char **pp, char **ppPoslist){ } /* -** Value used to signify the end of an position-list. This is safe because -** it is not possible to have a document with 2^31 terms. +** Value used to signify the end of an position-list. This must be +** as large or larger than any value that might appear on the +** position-list, even a position list that has been corrupted. */ -#define POSITION_LIST_END 0x7fffffff +#define POSITION_LIST_END LARGEST_INT64 /* ** This function is used to help parse position-lists. When this function is @@ -154370,7 +184774,7 @@ static void fts3ColumnlistCopy(char **pp, char **ppPoslist){ ** (in which case **pp will be a terminator bytes POS_END (0) or ** (1)). ** -** If *pp points past the end of the current position-list, set *pi to +** If *pp points past the end of the current position-list, set *pi to ** POSITION_LIST_END and return. Otherwise, read the next varint from *pp, ** increment the current value of *pi by the value read, and set *pp to ** point to the next value before returning. @@ -154386,7 +184790,9 @@ static void fts3ReadNextPos( sqlite3_int64 *pi /* IN/OUT: Value read from position-list */ ){ if( (**pp)&0xFE ){ - fts3GetDeltaVarint(pp, pi); + int iVal; + *pp += fts3GetVarint32((*pp), &iVal); + *pi += iVal; *pi -= 2; }else{ *pi = POSITION_LIST_END; @@ -154398,7 +184804,7 @@ static void fts3ReadNextPos( ** the value of iCol encoded as a varint to *pp. This will start a new ** column list. ** -** Set *pp to point to the byte just after the last byte written before +** Set *pp to point to the byte just after the last byte written before ** returning (do not modify it if iCol==0). Return the total number of bytes ** written (0 if iCol==0). */ @@ -154420,7 +184826,7 @@ static int fts3PutColNumber(char **pp, int iCol){ ** updated appropriately. The caller is responsible for insuring ** that there is enough space in *pp to hold the complete output. */ -static void fts3PoslistMerge( +static int fts3PoslistMerge( char **pp, /* Output buffer */ char **pp1, /* Left input list */ char **pp2 /* Right input list */ @@ -154433,12 +184839,18 @@ static void fts3PoslistMerge( int iCol1; /* The current column index in pp1 */ int iCol2; /* The current column index in pp2 */ - if( *p1==POS_COLUMN ) fts3GetVarint32(&p1[1], &iCol1); - else if( *p1==POS_END ) iCol1 = POSITION_LIST_END; + if( *p1==POS_COLUMN ){ + fts3GetVarint32(&p1[1], &iCol1); + if( iCol1==0 ) return FTS_CORRUPT_VTAB; + } + else if( *p1==POS_END ) iCol1 = 0x7fffffff; else iCol1 = 0; - if( *p2==POS_COLUMN ) fts3GetVarint32(&p2[1], &iCol2); - else if( *p2==POS_END ) iCol2 = POSITION_LIST_END; + if( *p2==POS_COLUMN ){ + fts3GetVarint32(&p2[1], &iCol2); + if( iCol2==0 ) return FTS_CORRUPT_VTAB; + } + else if( *p2==POS_END ) iCol2 = 0x7fffffff; else iCol2 = 0; if( iCol1==iCol2 ){ @@ -154451,7 +184863,7 @@ static void fts3PoslistMerge( /* At this point, both p1 and p2 point to the start of column-lists ** for the same column (the column with index iCol1 and iCol2). - ** A column-list is a list of non-negative delta-encoded varints, each + ** A column-list is a list of non-negative delta-encoded varints, each ** incremented by 2 before being stored. Each list is terminated by a ** POS_END (0) or POS_COLUMN (1). The following block merges the two lists ** and writes the results to buffer p. p is left pointing to the byte @@ -154460,8 +184872,11 @@ static void fts3PoslistMerge( */ fts3GetDeltaVarint(&p1, &i1); fts3GetDeltaVarint(&p2, &i2); + if( i1<2 || i2<2 ){ + break; + } do { - fts3PutDeltaVarint(&p, &iPrev, (i1pos(*pp1) && pos(*pp2)-pos(*pp1)<=nToken). i.e. ** when the *pp1 token appears before the *pp2 token, but not more than nToken @@ -154527,12 +184943,12 @@ static int fts3PoslistPhraseMerge( /* Never set both isSaveLeft and isExact for the same invocation. */ assert( isSaveLeft==0 || isExact==0 ); - assert( p!=0 && *p1!=0 && *p2!=0 ); - if( *p1==POS_COLUMN ){ + assert_fts3_nc( p!=0 && *p1!=0 && *p2!=0 ); + if( *p1==POS_COLUMN ){ p1++; p1 += fts3GetVarint32(p1, &iCol1); } - if( *p2==POS_COLUMN ){ + if( *p2==POS_COLUMN ){ p2++; p2 += fts3GetVarint32(p2, &iCol2); } @@ -154549,14 +184965,13 @@ static int fts3PoslistPhraseMerge( p += sqlite3Fts3PutVarint(p, iCol1); } - assert( *p1!=POS_END && *p1!=POS_COLUMN ); - assert( *p2!=POS_END && *p2!=POS_COLUMN ); fts3GetDeltaVarint(&p1, &iPos1); iPos1 -= 2; fts3GetDeltaVarint(&p2, &iPos2); iPos2 -= 2; + if( iPos1<0 || iPos2<0 ) break; while( 1 ){ - if( iPos2==iPos1+nToken - || (isExact==0 && iPos2>iPos1 && iPos2<=iPos1+nToken) + if( iPos2==iPos1+nToken + || (isExact==0 && iPos2>iPos1 && iPos2<=iPos1+nToken) ){ sqlite3_int64 iSave; iSave = isSaveLeft ? iPos1 : iPos2; @@ -154591,8 +185006,8 @@ static int fts3PoslistPhraseMerge( /* Advance pointer p1 or p2 (whichever corresponds to the smaller of ** iCol1 and iCol2) so that it points to either the 0x00 that marks the - ** end of the position list, or the 0x01 that precedes the next - ** column-number in the position list. + ** end of the position list, or the 0x01 that precedes the next + ** column-number in the position list. */ else if( iCol1=pEnd ){ *pp = 0; }else{ - sqlite3_int64 iVal; - *pp += sqlite3Fts3GetVarint(*pp, &iVal); + u64 iVal; + *pp += sqlite3Fts3GetVarintU(*pp, &iVal); if( bDescIdx ){ - *pVal -= iVal; + *pVal = (i64)((u64)*pVal - iVal); }else{ - *pVal += iVal; + *pVal = (i64)((u64)*pVal + iVal); } } } @@ -154717,9 +185132,9 @@ static void fts3GetDeltaVarint3( ** end of the value written. ** ** If *pbFirst is zero when this function is called, the value written to -** the buffer is that of parameter iVal. +** the buffer is that of parameter iVal. ** -** If *pbFirst is non-zero when this function is called, then the value +** If *pbFirst is non-zero when this function is called, then the value ** written is either (iVal-*piPrev) (if bDescIdx is zero) or (*piPrev-iVal) ** (if bDescIdx is non-zero). ** @@ -154733,14 +185148,16 @@ static void fts3PutDeltaVarint3( int *pbFirst, /* IN/OUT: True after first int written */ sqlite3_int64 iVal /* Write this value to the list */ ){ - sqlite3_int64 iWrite; + sqlite3_uint64 iWrite; if( bDescIdx==0 || *pbFirst==0 ){ - iWrite = iVal - *piPrev; + assert_fts3_nc( *pbFirst==0 || iVal>=*piPrev ); + iWrite = (u64)iVal - (u64)*piPrev; }else{ - iWrite = *piPrev - iVal; + assert_fts3_nc( *piPrev>=iVal ); + iWrite = (u64)*piPrev - (u64)iVal; } assert( *pbFirst || *piPrev==0 ); - assert( *pbFirst==0 || iWrite>0 ); + assert_fts3_nc( *pbFirst==0 || iWrite>0 ); *pp += sqlite3Fts3PutVarint(*pp, iWrite); *piPrev = iVal; *pbFirst = 1; @@ -154750,17 +185167,18 @@ static void fts3PutDeltaVarint3( /* ** This macro is used by various functions that merge doclists. The two ** arguments are 64-bit docid values. If the value of the stack variable -** bDescDoclist is 0 when this macro is invoked, then it returns (i1-i2). +** bDescDoclist is 0 when this macro is invoked, then it returns (i1-i2). ** Otherwise, (i2-i1). ** ** Using this makes it easier to write code that can merge doclists that are ** sorted in either ascending or descending order. */ -#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1-i2)) +/* #define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i64)((u64)i1-i2)) */ +#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1>i2?1:((i1==i2)?0:-1))) /* ** This function does an "OR" merge of two doclists (output contains all -** positions contained in either argument doclist). If the docids in the +** positions contained in either argument doclist). If the docids in the ** input doclists are sorted in ascending order, parameter bDescDoclist ** should be false. If they are sorted in ascending order, it should be ** passed a non-zero value. @@ -154778,6 +185196,7 @@ static int fts3DoclistOrMerge( char *a2, int n2, /* Second doclist */ char **paOut, int *pnOut /* OUT: Malloc'd doclist */ ){ + int rc = SQLITE_OK; sqlite3_int64 i1 = 0; sqlite3_int64 i2 = 0; sqlite3_int64 iPrev = 0; @@ -154799,12 +185218,12 @@ static int fts3DoclistOrMerge( ** current and previous docid (a positive number - since the list is in ** ascending order). ** - ** The first docid written to the output is therefore encoded using the + ** The first docid written to the output is therefore encoded using the ** same number of bytes as it is in whichever of the input lists it is - ** read from. And each subsequent docid read from the same input list + ** read from. And each subsequent docid read from the same input list ** consumes either the same or less bytes as it did in the input (since ** the difference between it and the previous value in the output must - ** be a positive value less than or equal to the delta value read from + ** be a positive value less than or equal to the delta value read from ** the input list). The same argument applies to all but the first docid ** read from the 'other' list. And to the contents of all position lists ** that will be copied and merged from the input to the output. @@ -154816,12 +185235,12 @@ static int fts3DoclistOrMerge( ** ** The space required to store the output is therefore the sum of the ** sizes of the two inputs, plus enough space for exactly one of the input - ** docids to grow. + ** docids to grow. ** - ** A symetric argument may be made if the doclists are in descending + ** A symetric argument may be made if the doclists are in descending ** order. */ - aOut = sqlite3_malloc(n1+n2+FTS3_VARINT_MAX-1); + aOut = sqlite3_malloc64((i64)n1+n2+FTS3_VARINT_MAX-1+FTS3_BUFFER_PADDING); if( !aOut ) return SQLITE_NOMEM; p = aOut; @@ -154832,7 +185251,8 @@ static int fts3DoclistOrMerge( if( p2 && p1 && iDiff==0 ){ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1); - fts3PoslistMerge(&p, &p1, &p2); + rc = fts3PoslistMerge(&p, &p1, &p2); + if( rc ) break; fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1); fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); }else if( !p2 || (p1 && iDiff<0) ){ @@ -154844,12 +185264,20 @@ static int fts3DoclistOrMerge( fts3PoslistCopy(&p, &p2); fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); } + + assert( (p-aOut)<=((p1?(p1-a1):n1)+(p2?(p2-a2):n2)+FTS3_VARINT_MAX-1) ); } + if( rc!=SQLITE_OK ){ + sqlite3_free(aOut); + p = aOut = 0; + }else{ + assert( (p-aOut)<=n1+n2+FTS3_VARINT_MAX-1 ); + memset(&aOut[(p-aOut)], 0, FTS3_BUFFER_PADDING); + } *paOut = aOut; *pnOut = (int)(p-aOut); - assert( *pnOut<=n1+n2+FTS3_VARINT_MAX-1 ); - return SQLITE_OK; + return rc; } /* @@ -154859,7 +185287,7 @@ static int fts3DoclistOrMerge( ** exactly nDist tokens before it. ** ** If the docids in the input doclists are sorted in ascending order, -** parameter bDescDoclist should be false. If they are sorted in ascending +** parameter bDescDoclist should be false. If they are sorted in ascending ** order, it should be passed a non-zero value. ** ** The right-hand input doclist is overwritten by this function. @@ -154884,7 +185312,7 @@ static int fts3DoclistPhraseMerge( assert( nDist>0 ); if( bDescDoclist ){ - aOut = sqlite3_malloc(*pnRight + FTS3_VARINT_MAX); + aOut = sqlite3_malloc64((sqlite3_int64)*pnRight + FTS3_VARINT_MAX); if( aOut==0 ) return SQLITE_NOMEM; }else{ aOut = aRight; @@ -155005,7 +185433,7 @@ static int fts3TermSelectFinishMerge(Fts3Table *p, TermSelect *pTS){ int nNew; char *aNew; - int rc = fts3DoclistOrMerge(p->bDescIdx, + int rc = fts3DoclistOrMerge(p->bDescIdx, pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, &aNew, &nNew ); if( rc!=SQLITE_OK ){ @@ -155049,25 +185477,26 @@ static int fts3TermSelectMerge( ){ if( pTS->aaOutput[0]==0 ){ /* If this is the first term selected, copy the doclist to the output - ** buffer using memcpy(). + ** buffer using memcpy(). ** - ** Add FTS3_VARINT_MAX bytes of unused space to the end of the + ** Add FTS3_VARINT_MAX bytes of unused space to the end of the ** allocation. This is so as to ensure that the buffer is big enough ** to hold the current doclist AND'd with any other doclist. If the ** doclists are stored in order=ASC order, this padding would not be ** required (since the size of [doclistA AND doclistB] is always less ** than or equal to the size of [doclistA] in that case). But this is - ** not true for order=DESC. For example, a doclist containing (1, -1) + ** not true for order=DESC. For example, a doclist containing (1, -1) ** may be smaller than (-1), as in the first example the -1 may be stored ** as a single-byte delta, whereas in the second it must be stored as a ** FTS3_VARINT_MAX byte varint. ** ** Similar padding is added in the fts3DoclistOrMerge() function. */ - pTS->aaOutput[0] = sqlite3_malloc(nDoclist + FTS3_VARINT_MAX + 1); + pTS->aaOutput[0] = sqlite3_malloc64((i64)nDoclist + FTS3_VARINT_MAX + 1); pTS->anOutput[0] = nDoclist; if( pTS->aaOutput[0] ){ memcpy(pTS->aaOutput[0], aDoclist, nDoclist); + memset(&pTS->aaOutput[0][nDoclist], 0, FTS3_VARINT_MAX); }else{ return SQLITE_NOMEM; } @@ -155086,7 +185515,7 @@ static int fts3TermSelectMerge( char *aNew; int nNew; - int rc = fts3DoclistOrMerge(p->bDescIdx, aMerge, nMerge, + int rc = fts3DoclistOrMerge(p->bDescIdx, aMerge, nMerge, pTS->aaOutput[iOut], pTS->anOutput[iOut], &aNew, &nNew ); if( rc!=SQLITE_OK ){ @@ -155097,7 +185526,7 @@ static int fts3TermSelectMerge( if( aMerge!=aDoclist ) sqlite3_free(aMerge); sqlite3_free(pTS->aaOutput[iOut]); pTS->aaOutput[iOut] = 0; - + aMerge = aNew; nMerge = nNew; if( (iOut+1)==SizeofArray(pTS->aaOutput) ){ @@ -155114,13 +185543,13 @@ static int fts3TermSelectMerge( ** Append SegReader object pNew to the end of the pCsr->apSegment[] array. */ static int fts3SegReaderCursorAppend( - Fts3MultiSegReader *pCsr, + Fts3MultiSegReader *pCsr, Fts3SegReader *pNew ){ if( (pCsr->nSegment%16)==0 ){ Fts3SegReader **apNew; - int nByte = (pCsr->nSegment + 16)*sizeof(Fts3SegReader*); - apNew = (Fts3SegReader **)sqlite3_realloc(pCsr->apSegment, nByte); + sqlite3_int64 nByte = (pCsr->nSegment + 16)*sizeof(Fts3SegReader*); + apNew = (Fts3SegReader **)sqlite3_realloc64(pCsr->apSegment, nByte); if( !apNew ){ sqlite3Fts3SegReaderFree(pNew); return SQLITE_NOMEM; @@ -155153,13 +185582,13 @@ static int fts3SegReaderCursor( sqlite3_stmt *pStmt = 0; /* Statement to iterate through segments */ int rc2; /* Result of sqlite3_reset() */ - /* If iLevel is less than 0 and this is not a scan, include a seg-reader + /* If iLevel is less than 0 and this is not a scan, include a seg-reader ** for the pending-terms. If this is a scan, then this call must be being ** made by an fts4aux module, not an FTS table. In this case calling - ** Fts3SegReaderPending might segfault, as the data structures used by + ** Fts3SegReaderPending might segfault, as the data structures used by ** fts4aux are not completely populated. So it's easiest to filter these ** calls out here. */ - if( iLevel<0 && p->aIndex ){ + if( iLevel<0 && p->aIndex && p->iPrevLangid==iLangid ){ Fts3SegReader *pSeg = 0; rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix||isScan, &pSeg); if( rc==SQLITE_OK && pSeg ){ @@ -155184,16 +185613,16 @@ static int fts3SegReaderCursor( /* If zTerm is not NULL, and this segment is not stored entirely on its ** root node, the range of leaves scanned can be reduced. Do this. */ - if( iStartBlock && zTerm ){ + if( iStartBlock && zTerm && zRoot ){ sqlite3_int64 *pi = (isPrefix ? &iLeavesEndBlock : 0); rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &iStartBlock, pi); if( rc!=SQLITE_OK ) goto finished; if( isPrefix==0 && isScan==0 ) iLeavesEndBlock = iStartBlock; } - - rc = sqlite3Fts3SegReaderNew(pCsr->nSegment+1, + + rc = sqlite3Fts3SegReaderNew(pCsr->nSegment+1, (isPrefix==0 && isScan==0), - iStartBlock, iLeavesEndBlock, + iStartBlock, iLeavesEndBlock, iEndBlock, zRoot, nRoot, &pSeg ); if( rc!=SQLITE_OK ) goto finished; @@ -155209,7 +185638,7 @@ static int fts3SegReaderCursor( } /* -** Set up a cursor object for iterating through a full-text index or a +** Set up a cursor object for iterating through a full-text index or a ** single level therein. */ SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor( @@ -155225,7 +185654,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor( ){ assert( iIndex>=0 && iIndexnIndex ); assert( iLevel==FTS3_SEGCURSOR_ALL - || iLevel==FTS3_SEGCURSOR_PENDING + || iLevel==FTS3_SEGCURSOR_PENDING || iLevel>=0 ); assert( iLevelnIndex; i++){ if( p->aIndex[i].nPrefix==nTerm ){ bFound = 1; - rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, + rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0, pSegcsr ); pSegcsr->bLookup = 1; @@ -155299,7 +185728,7 @@ static int fts3TermSegReaderCursor( for(i=1; bFound==0 && inIndex; i++){ if( p->aIndex[i].nPrefix==nTerm+1 ){ bFound = 1; - rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, + rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 1, 0, pSegcsr ); if( rc==SQLITE_OK ){ @@ -155312,7 +185741,7 @@ static int fts3TermSegReaderCursor( } if( bFound==0 ){ - rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, + rc = sqlite3Fts3SegReaderCursor(p, pCsr->iLangid, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, isPrefix, 0, pSegcsr ); pSegcsr->bLookup = !isPrefix; @@ -155360,7 +185789,7 @@ static int fts3TermSelect( rc = sqlite3Fts3SegReaderStart(p, pSegcsr, &filter); while( SQLITE_OK==rc - && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pSegcsr)) + && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pSegcsr)) ){ rc = fts3TermSelectMerge(p, &tsc, pSegcsr->aDoclist, pSegcsr->nDoclist); } @@ -155389,7 +185818,7 @@ static int fts3TermSelect( ** ** If the isPoslist argument is true, then it is assumed that the doclist ** contains a position-list following each docid. Otherwise, it is assumed -** that the doclist is simply a list of docids stored as delta encoded +** that the doclist is simply a list of docids stored as delta encoded ** varints. */ static int fts3DoclistCountDocids(char *aList, int nList){ @@ -155422,6 +185851,8 @@ static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){ int rc; Fts3Cursor *pCsr = (Fts3Cursor *)pCursor; if( pCsr->eSearch==FTS3_DOCID_SEARCH || pCsr->eSearch==FTS3_FULLSCAN_SEARCH ){ + Fts3Table *pTab = (Fts3Table*)pCursor->pVtab; + pTab->bLock++; if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){ pCsr->isEof = 1; rc = sqlite3_reset(pCsr->pStmt); @@ -155429,6 +185860,7 @@ static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){ pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0); rc = SQLITE_OK; } + pTab->bLock--; }else{ rc = fts3EvalNext((Fts3Cursor *)pCursor); } @@ -155436,18 +185868,6 @@ static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){ return rc; } -/* -** The following are copied from sqliteInt.h. -** -** Constants for the largest and smallest possible 64-bit signed integers. -** These macros are designed to work correctly on both 32-bit and 64-bit -** compilers. -*/ -#ifndef SQLITE_AMALGAMATION -# define LARGEST_INT64 (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32)) -# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64) -#endif - /* ** If the numeric type of argument pVal is "integer", then return it ** converted to a 64-bit signed integer. Otherwise, return a copy of @@ -155501,6 +185921,10 @@ static int fts3FilterMethod( UNUSED_PARAMETER(idxStr); UNUSED_PARAMETER(nVal); + if( p->bLock ){ + return SQLITE_ERROR; + } + eSearch = (idxNum & 0x0000FFFF); assert( eSearch>=0 && eSearch<=(FTS3_FULLTEXT_SEARCH+p->nColumn) ); assert( p->pSegments==0 ); @@ -155540,7 +185964,7 @@ static int fts3FilterMethod( assert( p->base.zErrMsg==0 ); rc = sqlite3Fts3ExprParse(p->pTokenizer, pCsr->iLangid, - p->azColumn, p->bFts4, p->nColumn, iCol, zQuery, -1, &pCsr->pExpr, + p->azColumn, p->bFts4, p->nColumn, iCol, zQuery, -1, &pCsr->pExpr, &p->base.zErrMsg ); if( rc!=SQLITE_OK ){ @@ -155567,12 +185991,16 @@ static int fts3FilterMethod( (pCsr->bDesc ? "DESC" : "ASC") ); }else{ - zSql = sqlite3_mprintf("SELECT %s ORDER BY rowid %s", + zSql = sqlite3_mprintf("SELECT %s ORDER BY rowid %s", p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC") ); } if( zSql ){ - rc = sqlite3_prepare_v3(p->db,zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0); + p->bLock++; + rc = sqlite3_prepare_v3( + p->db,zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0 + ); + p->bLock--; sqlite3_free(zSql); }else{ rc = SQLITE_NOMEM; @@ -155588,8 +186016,8 @@ static int fts3FilterMethod( return fts3NextMethod(pCursor); } -/* -** This is the xEof method of the virtual table. SQLite calls this +/* +** This is the xEof method of the virtual table. SQLite calls this ** routine to find out if it has reached the end of a result set. */ static int fts3EofMethod(sqlite3_vtab_cursor *pCursor){ @@ -155601,7 +186029,7 @@ static int fts3EofMethod(sqlite3_vtab_cursor *pCursor){ return pCsr->isEof; } -/* +/* ** This is the xRowid method. The SQLite core calls this routine to ** retrieve the rowid for the current row of the result set. fts3 ** exposes %_content.docid as the rowid for the virtual table. The @@ -155613,7 +186041,7 @@ static int fts3RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ return SQLITE_OK; } -/* +/* ** This is the xColumn method, called by SQLite to request a value from ** the row that the supplied cursor currently points to. ** @@ -155656,7 +186084,7 @@ static int fts3ColumnMethod( break; }else{ iCol = p->nColumn; - /* fall-through */ + /* no break */ deliberate_fall_through } default: @@ -155673,8 +186101,8 @@ static int fts3ColumnMethod( return rc; } -/* -** This function is the implementation of the xUpdate callback used by +/* +** This function is the implementation of the xUpdate callback used by ** FTS3 virtual tables. It is invoked by SQLite each time a row is to be ** inserted, updated or deleted. */ @@ -155709,7 +186137,7 @@ static int fts3SyncMethod(sqlite3_vtab *pVtab){ ** ** Of course, updating the input segments also involves deleting a bunch ** of blocks from the segments table. But this is not considered overhead - ** as it would also be required by a crisis-merge that used the same input + ** as it would also be required by a crisis-merge that used the same input ** segments. */ const u32 nMinMerge = 64; /* Minimum amount of incr-merge work to do */ @@ -155719,8 +186147,8 @@ static int fts3SyncMethod(sqlite3_vtab *pVtab){ i64 iLastRowid = sqlite3_last_insert_rowid(p->db); rc = sqlite3Fts3PendingTermsFlush(p); - if( rc==SQLITE_OK - && p->nLeafAdd>(nMinMerge/16) + if( rc==SQLITE_OK + && p->nLeafAdd>(nMinMerge/16) && p->nAutoincrmerge && p->nAutoincrmerge!=0xff ){ int mxLevel = 0; /* Maximum relative level value in db */ @@ -155759,18 +186187,24 @@ static int fts3SetHasStat(Fts3Table *p){ } /* -** Implementation of xBegin() method. +** Implementation of xBegin() method. */ static int fts3BeginMethod(sqlite3_vtab *pVtab){ Fts3Table *p = (Fts3Table*)pVtab; + int rc; UNUSED_PARAMETER(pVtab); assert( p->pSegments==0 ); assert( p->nPendingData==0 ); assert( p->inTransaction!=1 ); - TESTONLY( p->inTransaction = 1 ); - TESTONLY( p->mxSavepoint = -1; ); p->nLeafAdd = 0; - return fts3SetHasStat(p); + rc = fts3SetHasStat(p); +#ifdef SQLITE_DEBUG + if( rc==SQLITE_OK ){ + p->inTransaction = 1; + p->mxSavepoint = -1; + } +#endif + return rc; } /* @@ -155815,17 +186249,17 @@ static void fts3ReversePoslist(char *pStart, char **ppPoslist){ /* Skip backwards passed any trailing 0x00 bytes added by NearTrim() */ while( p>pStart && (c=*p--)==0 ); - /* Search backwards for a varint with value zero (the end of the previous + /* Search backwards for a varint with value zero (the end of the previous ** poslist). This is an 0x00 byte preceded by some byte that does not ** have the 0x80 bit set. */ - while( p>pStart && (*p & 0x80) | c ){ - c = *p--; + while( p>pStart && (*p & 0x80) | c ){ + c = *p--; } assert( p==pStart || c==0 ); /* At this point p points to that preceding byte without the 0x80 bit ** set. So to find the start of the poslist, skip forward 2 bytes then - ** over a varint. + ** over a varint. ** ** Normally. The other case is that p==pStart and the poslist to return ** is the first in the doclist. In this case do not skip forward 2 bytes. @@ -155846,7 +186280,7 @@ static void fts3ReversePoslist(char *pStart, char **ppPoslist){ ** offsets() and optimize() SQL functions. ** ** If the value passed as the third argument is a blob of size -** sizeof(Fts3Cursor*), then the blob contents are copied to the +** sizeof(Fts3Cursor*), then the blob contents are copied to the ** output variable *ppCsr and SQLITE_OK is returned. Otherwise, an error ** message is written to context pContext and SQLITE_ERROR returned. The ** string passed via zFunc is used as part of the error message. @@ -155891,7 +186325,7 @@ static void fts3SnippetFunc( assert( nVal>=1 ); if( nVal>6 ){ - sqlite3_result_error(pContext, + sqlite3_result_error(pContext, "wrong number of arguments to function snippet()", -1); return; } @@ -155899,9 +186333,13 @@ static void fts3SnippetFunc( switch( nVal ){ case 6: nToken = sqlite3_value_int(apVal[5]); + /* no break */ deliberate_fall_through case 5: iCol = sqlite3_value_int(apVal[4]); + /* no break */ deliberate_fall_through case 4: zEllipsis = (const char*)sqlite3_value_text(apVal[3]); + /* no break */ deliberate_fall_through case 3: zEnd = (const char*)sqlite3_value_text(apVal[2]); + /* no break */ deliberate_fall_through case 2: zStart = (const char*)sqlite3_value_text(apVal[1]); } if( !zEllipsis || !zEnd || !zStart ){ @@ -155933,8 +186371,8 @@ static void fts3OffsetsFunc( } } -/* -** Implementation of the special optimize() function for FTS3. This +/* +** Implementation of the special optimize() function for FTS3. This ** function merges all segments in the database to a single segment. ** Example usage is: ** @@ -156043,10 +186481,10 @@ static int fts3RenameMethod( /* At this point it must be known if the %_stat table exists or not. ** So bHasStat may not be 2. */ rc = fts3SetHasStat(p); - + /* As it happens, the pending terms table is always empty here. This is - ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction - ** always opens a savepoint transaction. And the xSavepoint() method + ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction + ** always opens a savepoint transaction. And the xSavepoint() method ** flushes the pending terms table. But leave the (no-op) call to ** PendingTermsFlush() in in case that changes. */ @@ -156094,7 +186532,7 @@ static int fts3SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){ int rc = SQLITE_OK; UNUSED_PARAMETER(iSavepoint); assert( ((Fts3Table *)pVtab)->inTransaction ); - assert( ((Fts3Table *)pVtab)->mxSavepoint < iSavepoint ); + assert( ((Fts3Table *)pVtab)->mxSavepoint <= iSavepoint ); TESTONLY( ((Fts3Table *)pVtab)->mxSavepoint = iSavepoint ); if( ((Fts3Table *)pVtab)->bIgnoreSavepoint==0 ){ rc = fts3SyncMethod(pVtab); @@ -156126,14 +186564,28 @@ static int fts3RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){ Fts3Table *p = (Fts3Table*)pVtab; UNUSED_PARAMETER(iSavepoint); assert( p->inTransaction ); - assert( p->mxSavepoint >= iSavepoint ); TESTONLY( p->mxSavepoint = iSavepoint ); sqlite3Fts3PendingTermsClear(p); return SQLITE_OK; } +/* +** Return true if zName is the extension on one of the shadow tables used +** by this module. +*/ +static int fts3ShadowName(const char *zName){ + static const char *azName[] = { + "content", "docsize", "segdir", "segments", "stat", + }; + unsigned int i; + for(i=0; inRef--; + if( pHash->nRef<=0 ){ + sqlite3Fts3HashClear(&pHash->hash); + sqlite3_free(pHash); + } } /* -** The fts3 built-in tokenizers - "simple", "porter" and "icu"- are +** The fts3 built-in tokenizers - "simple", "porter" and "icu"- are ** implemented in files fts3_tokenizer1.c, fts3_porter.c and fts3_icu.c ** respectively. The following three forward declarations are for functions ** declared in these files used to retrieve the respective implementations. @@ -156196,7 +186652,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule(sqlite3_tokenizer_module const */ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ int rc = SQLITE_OK; - Fts3Hash *pHash = 0; + Fts3HashWrapper *pHash = 0; const sqlite3_tokenizer_module *pSimple = 0; const sqlite3_tokenizer_module *pPorter = 0; #ifndef SQLITE_DISABLE_FTS3_UNICODE @@ -156224,23 +186680,24 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ sqlite3Fts3PorterTokenizerModule(&pPorter); /* Allocate and initialize the hash-table used to store tokenizers. */ - pHash = sqlite3_malloc(sizeof(Fts3Hash)); + pHash = sqlite3_malloc(sizeof(Fts3HashWrapper)); if( !pHash ){ rc = SQLITE_NOMEM; }else{ - sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1); + sqlite3Fts3HashInit(&pHash->hash, FTS3_HASH_STRING, 1); + pHash->nRef = 0; } /* Load the built-in tokenizers into the hash table */ if( rc==SQLITE_OK ){ - if( sqlite3Fts3HashInsert(pHash, "simple", 7, (void *)pSimple) - || sqlite3Fts3HashInsert(pHash, "porter", 7, (void *)pPorter) + if( sqlite3Fts3HashInsert(&pHash->hash, "simple", 7, (void *)pSimple) + || sqlite3Fts3HashInsert(&pHash->hash, "porter", 7, (void *)pPorter) #ifndef SQLITE_DISABLE_FTS3_UNICODE - || sqlite3Fts3HashInsert(pHash, "unicode61", 10, (void *)pUnicode) + || sqlite3Fts3HashInsert(&pHash->hash, "unicode61", 10, (void *)pUnicode) #endif #ifdef SQLITE_ENABLE_ICU - || (pIcu && sqlite3Fts3HashInsert(pHash, "icu", 4, (void *)pIcu)) + || (pIcu && sqlite3Fts3HashInsert(&pHash->hash, "icu", 4, (void *)pIcu)) #endif ){ rc = SQLITE_NOMEM; @@ -156249,32 +186706,35 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ #ifdef SQLITE_TEST if( rc==SQLITE_OK ){ - rc = sqlite3Fts3ExprInitTestInterface(db, pHash); + rc = sqlite3Fts3ExprInitTestInterface(db, &pHash->hash); } #endif - /* Create the virtual table wrapper around the hash-table and overload + /* Create the virtual table wrapper around the hash-table and overload ** the four scalar functions. If this is successful, register the ** module with sqlite. */ - if( SQLITE_OK==rc - && SQLITE_OK==(rc = sqlite3Fts3InitHashTable(db, pHash, "fts3_tokenizer")) + if( SQLITE_OK==rc + && SQLITE_OK==(rc=sqlite3Fts3InitHashTable(db,&pHash->hash,"fts3_tokenizer")) && SQLITE_OK==(rc = sqlite3_overload_function(db, "snippet", -1)) && SQLITE_OK==(rc = sqlite3_overload_function(db, "offsets", 1)) && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 1)) && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 2)) && SQLITE_OK==(rc = sqlite3_overload_function(db, "optimize", 1)) ){ + pHash->nRef++; rc = sqlite3_create_module_v2( db, "fts3", &fts3Module, (void *)pHash, hashDestroy ); if( rc==SQLITE_OK ){ + pHash->nRef++; rc = sqlite3_create_module_v2( - db, "fts4", &fts3Module, (void *)pHash, 0 + db, "fts4", &fts3Module, (void *)pHash, hashDestroy ); } if( rc==SQLITE_OK ){ - rc = sqlite3Fts3InitTok(db, (void *)pHash); + pHash->nRef++; + rc = sqlite3Fts3InitTok(db, (void *)pHash, hashDestroy); } return rc; } @@ -156283,7 +186743,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ /* An error has occurred. Delete the hash table and return the error code. */ assert( rc!=SQLITE_OK ); if( pHash ){ - sqlite3Fts3HashClear(pHash); + sqlite3Fts3HashClear(&pHash->hash); sqlite3_free(pHash); } return rc; @@ -156291,7 +186751,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ /* ** Allocate an Fts3MultiSegReader for each token in the expression headed -** by pExpr. +** by pExpr. ** ** An Fts3SegReader object is a cursor that can seek or scan a range of ** entries within a single segment b-tree. An Fts3MultiSegReader uses multiple @@ -156301,7 +186761,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ ** If the allocated Fts3MultiSegReader just seeks to a single entry in a ** segment b-tree (if the term is not a prefix or it is a prefix for which ** there exists prefix b-tree of the right length) then it may be traversed -** and merged incrementally. Otherwise, it has to be merged into an in-memory +** and merged incrementally. Otherwise, it has to be merged into an in-memory ** doclist and then traversed. */ static void fts3EvalAllocateReaders( @@ -156318,7 +186778,7 @@ static void fts3EvalAllocateReaders( *pnToken += nToken; for(i=0; ipPhrase->aToken[i]; - int rc = fts3TermSegReaderCursor(pCsr, + int rc = fts3TermSegReaderCursor(pCsr, pToken->z, pToken->n, pToken->isPrefix, &pToken->pSegcsr ); if( rc!=SQLITE_OK ){ @@ -156436,6 +186896,7 @@ static int fts3EvalPhraseLoad( return rc; } +#ifndef SQLITE_DISABLE_FTS4_DEFERRED /* ** This function is called on each phrase after the position lists for ** any deferred tokens have been loaded into memory. It updates the phrases @@ -156451,8 +186912,7 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ char *aPoslist = 0; /* Position list for deferred tokens */ int nPoslist = 0; /* Number of bytes in aPoslist */ int iPrev = -1; /* Token number of previous deferred token */ - - assert( pPhrase->doclist.bFreeList==0 ); + char *aFree = (pPhrase->doclist.bFreeList ? pPhrase->doclist.pList : 0); for(iToken=0; iTokennToken; iToken++){ Fts3PhraseToken *pToken = &pPhrase->aToken[iToken]; @@ -156466,6 +186926,7 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ if( pList==0 ){ sqlite3_free(aPoslist); + sqlite3_free(aFree); pPhrase->doclist.pList = 0; pPhrase->doclist.nList = 0; return SQLITE_OK; @@ -156486,6 +186947,7 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ nPoslist = (int)(aOut - aPoslist); if( nPoslist==0 ){ sqlite3_free(aPoslist); + sqlite3_free(aFree); pPhrase->doclist.pList = 0; pPhrase->doclist.nList = 0; return SQLITE_OK; @@ -156518,13 +186980,14 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ nDistance = iPrev - nMaxUndeferred; } - aOut = (char *)sqlite3_malloc(nPoslist+8); + aOut = (char *)sqlite3Fts3MallocZero(nPoslist+FTS3_BUFFER_PADDING); if( !aOut ){ sqlite3_free(aPoslist); return SQLITE_NOMEM; } - + pPhrase->doclist.pList = aOut; + assert( p1 && p2 ); if( fts3PoslistPhraseMerge(&aOut, nDistance, 0, 1, &p1, &p2) ){ pPhrase->doclist.bFreeList = 1; pPhrase->doclist.nList = (int)(aOut - pPhrase->doclist.pList); @@ -156537,8 +187000,10 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ } } + if( pPhrase->doclist.pList!=aFree ) sqlite3_free(aFree); return SQLITE_OK; } +#endif /* SQLITE_DISABLE_FTS4_DEFERRED */ /* ** Maximum number of tokens a phrase may have to be considered for the @@ -156547,7 +187012,7 @@ static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ #define MAX_INCR_PHRASE_TOKENS 4 /* -** This function is called for each Fts3Phrase in a full-text query +** This function is called for each Fts3Phrase in a full-text query ** expression to initialize the mechanism for returning rows. Once this ** function has been called successfully on an Fts3Phrase, it may be ** used with fts3EvalPhraseNext() to iterate through the matching docids. @@ -156565,14 +187030,14 @@ static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){ /* Determine if doclists may be loaded from disk incrementally. This is ** possible if the bOptOk argument is true, the FTS doclists will be - ** scanned in forward order, and the phrase consists of + ** scanned in forward order, and the phrase consists of ** MAX_INCR_PHRASE_TOKENS or fewer tokens, none of which are are "^first" ** tokens or prefix tokens that cannot use a prefix-index. */ int bHaveIncr = 0; - int bIncrOk = (bOptOk - && pCsr->bDesc==pTab->bDescIdx + int bIncrOk = (bOptOk + && pCsr->bDesc==pTab->bDescIdx && p->nToken<=MAX_INCR_PHRASE_TOKENS && p->nToken>0 -#ifdef SQLITE_TEST +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) && pTab->bNoIncrDoclist==0 #endif ); @@ -156606,12 +187071,12 @@ static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){ } /* -** This function is used to iterate backwards (from the end to start) +** This function is used to iterate backwards (from the end to start) ** through doclists. It is used by this module to iterate through phrase ** doclists in reverse and by the fts3_write.c module to iterate through ** pending-terms lists when writing to databases with "order=desc". ** -** The doclist may be sorted in ascending (parameter bDescIdx==0) or +** The doclist may be sorted in ascending (parameter bDescIdx==0) or ** descending (parameter bDescIdx==1) order of docid. Regardless, this ** function iterates from the end of the doclist to the beginning. */ @@ -156628,7 +187093,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistPrev( assert( nDoclist>0 ); assert( *pbEof==0 ); - assert( p || *piDocid==0 ); + assert_fts3_nc( p || *piDocid==0 ); assert( !p || (p>aDoclist && p<&aDoclist[nDoclist]) ); if( p==0 ){ @@ -156683,7 +187148,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistNext( assert( nDoclist>0 ); assert( *pbEof==0 ); - assert( p || *piDocid==0 ); + assert_fts3_nc( p || *piDocid==0 ); assert( !p || (p>=aDoclist && p<=&aDoclist[nDoclist]) ); if( p==0 ){ @@ -156691,7 +187156,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistNext( p += sqlite3Fts3GetVarint(p, piDocid); }else{ fts3PoslistCopy(0, &p); - while( p<&aDoclist[nDoclist] && *p==0 ) p++; + while( p<&aDoclist[nDoclist] && *p==0 ) p++; if( p>=&aDoclist[nDoclist] ){ *pbEof = 1; }else{ @@ -156714,15 +187179,16 @@ static void fts3EvalDlPhraseNext( u8 *pbEof ){ char *pIter; /* Used to iterate through aAll */ - char *pEnd = &pDL->aAll[pDL->nAll]; /* 1 byte past end of aAll */ - + char *pEnd; /* 1 byte past end of aAll */ + if( pDL->pNextDocid ){ pIter = pDL->pNextDocid; + assert( pDL->aAll!=0 || pIter==0 ); }else{ pIter = pDL->aAll; } - if( pIter>=pEnd ){ + if( pIter==0 || pIter>=(pEnd = pDL->aAll + pDL->nAll) ){ /* We have already reached the end of this doclist. EOF. */ *pbEof = 1; }else{ @@ -156763,12 +187229,12 @@ struct TokenDoclist { }; /* -** Token pToken is an incrementally loaded token that is part of a +** Token pToken is an incrementally loaded token that is part of a ** multi-token phrase. Advance it to the next matching document in the ** database and populate output variable *p with the details of the new ** entry. Or, if the iterator has reached EOF, set *pbEof to true. ** -** If an error occurs, return an SQLite error code. Otherwise, return +** If an error occurs, return an SQLite error code. Otherwise, return ** SQLITE_OK. */ static int incrPhraseTokenNext( @@ -156809,18 +187275,18 @@ static int incrPhraseTokenNext( /* ** The phrase iterator passed as the second argument: ** -** * features at least one token that uses an incremental doclist, and +** * features at least one token that uses an incremental doclist, and ** ** * does not contain any deferred tokens. ** ** Advance it to the next matching documnent in the database and populate -** the Fts3Doclist.pList and nList fields. +** the Fts3Doclist.pList and nList fields. ** ** If there is no "next" entry and no error occurs, then *pbEof is set to ** 1 before returning. Otherwise, if no error occurs and the iterator is ** successfully advanced, *pbEof is set to 0. ** -** If an error occurs, return an SQLite error code. Otherwise, return +** If an error occurs, return an SQLite error code. Otherwise, return ** SQLITE_OK. */ static int fts3EvalIncrPhraseNext( @@ -156838,7 +187304,7 @@ static int fts3EvalIncrPhraseNext( assert( p->bIncr==1 ); if( p->nToken==1 ){ - rc = sqlite3Fts3MsrIncrNext(pTab, p->aToken[0].pSegcsr, + rc = sqlite3Fts3MsrIncrNext(pTab, p->aToken[0].pSegcsr, &pDL->iDocid, &pDL->pList, &pDL->nList ); if( pDL->pList==0 ) bEof = 1; @@ -156868,8 +187334,8 @@ static int fts3EvalIncrPhraseNext( /* Keep advancing iterators until they all point to the same document */ for(i=0; inToken; i++){ - while( rc==SQLITE_OK && bEof==0 - && a[i].bIgnore==0 && DOCID_CMP(a[i].iDocid, iMax)<0 + while( rc==SQLITE_OK && bEof==0 + && a[i].bIgnore==0 && DOCID_CMP(a[i].iDocid, iMax)<0 ){ rc = incrPhraseTokenNext(pTab, p, i, &a[i], &bEof); if( DOCID_CMP(a[i].iDocid, iMax)>0 ){ @@ -156883,9 +187349,10 @@ static int fts3EvalIncrPhraseNext( if( bEof==0 ){ int nList = 0; int nByte = a[p->nToken-1].nList; - char *aDoclist = sqlite3_malloc(nByte+1); + char *aDoclist = sqlite3_malloc64((i64)nByte+FTS3_BUFFER_PADDING); if( !aDoclist ) return SQLITE_NOMEM; memcpy(aDoclist, a[p->nToken-1].pList, nByte+1); + memset(&aDoclist[nByte], 0, FTS3_BUFFER_PADDING); for(i=0; i<(p->nToken-1); i++){ if( a[i].bIgnore==0 ){ @@ -156915,8 +187382,8 @@ static int fts3EvalIncrPhraseNext( } /* -** Attempt to move the phrase iterator to point to the next matching docid. -** If an error occurs, return an SQLite error code. Otherwise, return +** Attempt to move the phrase iterator to point to the next matching docid. +** If an error occurs, return an SQLite error code. Otherwise, return ** SQLITE_OK. ** ** If there is no "next" entry and no error occurs, then *pbEof is set to @@ -156935,7 +187402,7 @@ static int fts3EvalPhraseNext( if( p->bIncr ){ rc = fts3EvalIncrPhraseNext(pCsr, p, pbEof); }else if( pCsr->bDesc!=pTab->bDescIdx && pDL->nAll ){ - sqlite3Fts3DoclistPrev(pTab->bDescIdx, pDL->aAll, pDL->nAll, + sqlite3Fts3DoclistPrev(pTab->bDescIdx, pDL->aAll, pDL->nAll, &pDL->pNextDocid, &pDL->iDocid, &pDL->nList, pbEof ); pDL->pList = pDL->pNextDocid; @@ -156995,7 +187462,7 @@ static void fts3EvalStartReaders( ** Tokens are divided into AND/NEAR clusters. All tokens in a cluster belong ** to phrases that are connected only by AND and NEAR operators (not OR or ** NOT). When determining tokens to defer, each AND/NEAR cluster is considered -** separately. The root of a tokens AND/NEAR cluster is stored in +** separately. The root of a tokens AND/NEAR cluster is stored in ** Fts3TokenAndCost.pRoot. */ typedef struct Fts3TokenAndCost Fts3TokenAndCost; @@ -157063,7 +187530,7 @@ static void fts3EvalTokenCosts( ** write this value to *pnPage and return SQLITE_OK. Otherwise, return ** an SQLite error code. ** -** The average document size in pages is calculated by first calculating +** The average document size in pages is calculated by first calculating ** determining the average size in bytes, B. If B is less than the amount ** of data that will fit on a single leaf page of an intkey table in ** this database, then the average docsize is 1. Otherwise, it is 1 plus @@ -157073,10 +187540,10 @@ static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){ int rc = SQLITE_OK; if( pCsr->nRowAvg==0 ){ /* The average document size, which is required to calculate the cost - ** of each doclist, has not yet been determined. Read the required + ** of each doclist, has not yet been determined. Read the required ** data from the %_stat table to calculate it. ** - ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3 + ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3 ** varints, where nCol is the number of columns in the FTS3 table. ** The first varint is the number of documents currently stored in ** the table. The following nCol varints contain the total amount of @@ -157093,12 +187560,13 @@ static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){ rc = sqlite3Fts3SelectDoctotal(p, &pStmt); if( rc!=SQLITE_OK ) return rc; a = sqlite3_column_blob(pStmt, 0); - assert( a ); - - pEnd = &a[sqlite3_column_bytes(pStmt, 0)]; - a += sqlite3Fts3GetVarint(a, &nDoc); - while( anDoc = nDoc; pCsr->nRowAvg = (int)(((nByte / nDoc) + p->nPgsz) / p->nPgsz); - assert( pCsr->nRowAvg>0 ); + assert( pCsr->nRowAvg>0 ); rc = sqlite3_reset(pStmt); } @@ -157116,11 +187584,11 @@ static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){ } /* -** This function is called to select the tokens (if any) that will be +** This function is called to select the tokens (if any) that will be ** deferred. The array aTC[] has already been populated when this is ** called. ** -** This function is called once for each AND/NEAR cluster in the +** This function is called once for each AND/NEAR cluster in the ** expression. Each invocation determines which tokens to defer within ** the cluster with root node pRoot. See comments above the definition ** of struct Fts3TokenAndCost for more details. @@ -157170,8 +187638,8 @@ static int fts3EvalSelectDeferred( assert( rc!=SQLITE_OK || nDocSize>0 ); - /* Iterate through all tokens in this AND/NEAR cluster, in ascending order - ** of the number of overflow pages that will be loaded by the pager layer + /* Iterate through all tokens in this AND/NEAR cluster, in ascending order + ** of the number of overflow pages that will be loaded by the pager layer ** to retrieve the entire doclist for the token from the full-text index. ** Load the doclists for tokens that are either: ** @@ -157182,7 +187650,7 @@ static int fts3EvalSelectDeferred( ** ** After each token doclist is loaded, merge it with the others from the ** same phrase and count the number of documents that the merged doclist - ** contains. Set variable "nMinEst" to the smallest number of documents in + ** contains. Set variable "nMinEst" to the smallest number of documents in ** any phrase doclist for which 1 or more token doclists have been loaded. ** Let nOther be the number of other phrases for which it is certain that ** one or more tokens will not be deferred. @@ -157198,8 +187666,8 @@ static int fts3EvalSelectDeferred( /* Set pTC to point to the cheapest remaining token. */ for(iTC=0; iTCnOvfl) + if( aTC[iTC].pToken && aTC[iTC].pRoot==pRoot + && (!pTC || aTC[iTC].nOvflnOvfl) ){ pTC = &aTC[iTC]; } @@ -157208,7 +187676,7 @@ static int fts3EvalSelectDeferred( if( ii && pTC->nOvfl>=((nMinEst+(nLoad4/4)-1)/(nLoad4/4))*nDocSize ){ /* The number of overflow pages to load for this (and therefore all - ** subsequent) tokens is greater than the estimated number of pages + ** subsequent) tokens is greater than the estimated number of pages ** that will be loaded if all subsequent tokens are deferred. */ Fts3PhraseToken *pToken = pTC->pToken; @@ -157217,7 +187685,7 @@ static int fts3EvalSelectDeferred( pToken->pSegcsr = 0; }else{ /* Set nLoad4 to the value of (4^nOther) for the next iteration of the - ** for-loop. Except, limit the value to 2^24 to prevent it from + ** for-loop. Except, limit the value to 2^24 to prevent it from ** overflowing the 32-bit integer it is stored in. */ if( ii<12 ) nLoad4 = nLoad4*4; @@ -157275,16 +187743,15 @@ static int fts3EvalStart(Fts3Cursor *pCsr){ #ifndef SQLITE_DISABLE_FTS4_DEFERRED if( rc==SQLITE_OK && nToken>1 && pTab->bFts4 ){ Fts3TokenAndCost *aTC; - Fts3Expr **apOr; - aTC = (Fts3TokenAndCost *)sqlite3_malloc( + aTC = (Fts3TokenAndCost *)sqlite3_malloc64( sizeof(Fts3TokenAndCost) * nToken + sizeof(Fts3Expr *) * nOr * 2 ); - apOr = (Fts3Expr **)&aTC[nToken]; if( !aTC ){ rc = SQLITE_NOMEM; }else{ + Fts3Expr **apOr = (Fts3Expr **)&aTC[nToken]; int ii; Fts3TokenAndCost *pTC = aTC; Fts3Expr **ppOr = apOr; @@ -157330,7 +187797,7 @@ static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){ ** ** Parameter nNear is passed the NEAR distance of the expression (5 in ** the example above). When this function is called, *paPoslist points to -** the position list, and *pnToken is the number of phrase tokens in, the +** the position list, and *pnToken is the number of phrase tokens in the ** phrase on the other side of the NEAR operator to pPhrase. For example, ** if pPhrase refers to the "def ghi" phrase, then *paPoslist points to ** the position list associated with phrase "abc". @@ -157339,7 +187806,7 @@ static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){ ** close to a position in the *paPoslist position list are removed. If this ** leaves 0 positions, zero is returned. Otherwise, non-zero. ** -** Before returning, *paPoslist is set to point to the position lsit +** Before returning, *paPoslist is set to point to the position lsit ** associated with pPhrase. And *pnToken is set to the number of tokens in ** pPhrase. */ @@ -157353,8 +187820,8 @@ static int fts3EvalNearTrim( int nParam1 = nNear + pPhrase->nToken; int nParam2 = nNear + *pnToken; int nNew; - char *p2; - char *pOut; + char *p2; + char *pOut; int res; assert( pPhrase->doclist.pList ); @@ -157365,10 +187832,12 @@ static int fts3EvalNearTrim( ); if( res ){ nNew = (int)(pOut - pPhrase->doclist.pList) - 1; - assert( pPhrase->doclist.pList[nNew]=='\0' ); - assert( nNew<=pPhrase->doclist.nList && nNew>0 ); - memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew); - pPhrase->doclist.nList = nNew; + assert_fts3_nc( nNew<=pPhrase->doclist.nList && nNew>0 ); + if( nNew>=0 && nNew<=pPhrase->doclist.nList ){ + assert( pPhrase->doclist.pList[nNew]=='\0' ); + memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew); + pPhrase->doclist.nList = nNew; + } *paPoslist = pPhrase->doclist.pList; *pnToken = pPhrase->nToken; } @@ -157401,19 +187870,19 @@ static int fts3EvalNearTrim( ** ** 1. Deferred tokens are not taken into account. If a phrase consists ** entirely of deferred tokens, it is assumed to match every row in -** the db. In this case the position-list is not populated at all. +** the db. In this case the position-list is not populated at all. ** ** Or, if a phrase contains one or more deferred tokens and one or -** more non-deferred tokens, then the expression is advanced to the +** more non-deferred tokens, then the expression is advanced to the ** next possible match, considering only non-deferred tokens. In other ** words, if the phrase is "A B C", and "B" is deferred, the expression -** is advanced to the next row that contains an instance of "A * C", +** is advanced to the next row that contains an instance of "A * C", ** where "*" may match any single token. The position list in this case ** is populated as for "A * C" before returning. ** -** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is +** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is ** advanced to point to the next row that matches "x AND y". -** +** ** See sqlite3Fts3EvalTestDeferred() for details on testing if a row is ** really a match, taking into account deferred tokens and NEAR operators. */ @@ -157422,9 +187891,8 @@ static void fts3EvalNextRow( Fts3Expr *pExpr, /* Expr. to advance to next matching row */ int *pRc /* IN/OUT: Error code */ ){ - if( *pRc==SQLITE_OK ){ + if( *pRc==SQLITE_OK && pExpr->bEof==0 ){ int bDescDoclist = pCsr->bDesc; /* Used by DOCID_CMP() macro */ - assert( pExpr->bEof==0 ); pExpr->bStart = 1; switch( pExpr->eType ){ @@ -157477,18 +187945,19 @@ static void fts3EvalNextRow( fts3EvalNextRow(pCsr, pLeft, pRc); } } + pRight->bEof = pLeft->bEof = 1; } } break; } - + case FTSQUERY_OR: { Fts3Expr *pLeft = pExpr->pLeft; Fts3Expr *pRight = pExpr->pRight; sqlite3_int64 iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid); - assert( pLeft->bStart || pLeft->iDocid==pRight->iDocid ); - assert( pRight->bStart || pLeft->iDocid==pRight->iDocid ); + assert_fts3_nc( pLeft->bStart || pLeft->iDocid==pRight->iDocid ); + assert_fts3_nc( pRight->bStart || pLeft->iDocid==pRight->iDocid ); if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){ fts3EvalNextRow(pCsr, pLeft, pRc); @@ -157521,9 +187990,9 @@ static void fts3EvalNextRow( fts3EvalNextRow(pCsr, pLeft, pRc); if( pLeft->bEof==0 ){ - while( !*pRc - && !pRight->bEof - && DOCID_CMP(pLeft->iDocid, pRight->iDocid)>0 + while( !*pRc + && !pRight->bEof + && DOCID_CMP(pLeft->iDocid, pRight->iDocid)>0 ){ fts3EvalNextRow(pCsr, pRight, pRc); } @@ -157548,14 +188017,14 @@ static void fts3EvalNextRow( ** If *pRc is not SQLITE_OK, or if pExpr is not the root node of a NEAR ** cluster, then this function returns 1 immediately. ** -** Otherwise, it checks if the current row really does match the NEAR -** expression, using the data currently stored in the position lists -** (Fts3Expr->pPhrase.doclist.pList/nList) for each phrase in the expression. +** Otherwise, it checks if the current row really does match the NEAR +** expression, using the data currently stored in the position lists +** (Fts3Expr->pPhrase.doclist.pList/nList) for each phrase in the expression. ** ** If the current row is a match, the position list associated with each ** phrase in the NEAR expression is edited in place to contain only those ** phrase instances sufficiently close to their peers to satisfy all NEAR -** constraints. In this case it returns 1. If the NEAR expression does not +** constraints. In this case it returns 1. If the NEAR expression does not ** match the current row, 0 is returned. The position lists may or may not ** be edited if 0 is returned. */ @@ -157578,16 +188047,16 @@ static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){ ** | | ** "w" "x" ** - ** The right-hand child of a NEAR node is always a phrase. The + ** The right-hand child of a NEAR node is always a phrase. The ** left-hand child may be either a phrase or a NEAR node. There are ** no exceptions to this - it's the way the parser in fts3_expr.c works. */ - if( *pRc==SQLITE_OK - && pExpr->eType==FTSQUERY_NEAR + if( *pRc==SQLITE_OK + && pExpr->eType==FTSQUERY_NEAR && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR) ){ - Fts3Expr *p; - int nTmp = 0; /* Bytes of temp space */ + Fts3Expr *p; + sqlite3_int64 nTmp = 0; /* Bytes of temp space */ char *aTmp; /* Temp space for PoslistNearMerge() */ /* Allocate temporary working space. */ @@ -157596,7 +188065,7 @@ static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){ nTmp += p->pRight->pPhrase->doclist.nList; } nTmp += p->pPhrase->doclist.nList; - aTmp = sqlite3_malloc(nTmp*2); + aTmp = sqlite3_malloc64(nTmp*2); if( !aTmp ){ *pRc = SQLITE_NOMEM; res = 0; @@ -157633,12 +188102,12 @@ static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){ /* ** This function is a helper function for sqlite3Fts3EvalTestDeferred(). ** Assuming no error occurs or has occurred, It returns non-zero if the -** expression passed as the second argument matches the row that pCsr +** expression passed as the second argument matches the row that pCsr ** currently points to, or zero if it does not. ** ** If *pRc is not SQLITE_OK when this function is called, it is a no-op. -** If an error occurs during execution of this function, *pRc is set to -** the appropriate SQLite error code. In this case the returned value is +** If an error occurs during execution of this function, *pRc is set to +** the appropriate SQLite error code. In this case the returned value is ** undefined. */ static int fts3EvalTestExpr( @@ -157657,10 +188126,10 @@ static int fts3EvalTestExpr( && fts3EvalNearTest(pExpr, pRc) ); - /* If the NEAR expression does not match any rows, zero the doclist for + /* If the NEAR expression does not match any rows, zero the doclist for ** all phrases involved in the NEAR. This is because the snippet(), - ** offsets() and matchinfo() functions are not supposed to recognize - ** any instances of phrases that are part of unmatched NEAR queries. + ** offsets() and matchinfo() functions are not supposed to recognize + ** any instances of phrases that are part of unmatched NEAR queries. ** For example if this expression: ** ** ... MATCH 'a OR (b NEAR c)' @@ -157672,8 +188141,8 @@ static int fts3EvalTestExpr( ** then any snippet() should ony highlight the "a" term, not the "b" ** (as "b" is part of a non-matching NEAR clause). */ - if( bHit==0 - && pExpr->eType==FTSQUERY_NEAR + if( bHit==0 + && pExpr->eType==FTSQUERY_NEAR && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR) ){ Fts3Expr *p; @@ -157705,11 +188174,10 @@ static int fts3EvalTestExpr( default: { #ifndef SQLITE_DISABLE_FTS4_DEFERRED - if( pCsr->pDeferred - && (pExpr->iDocid==pCsr->iPrevId || pExpr->bDeferred) - ){ + if( pCsr->pDeferred && (pExpr->bDeferred || ( + pExpr->iDocid==pCsr->iPrevId && pExpr->pPhrase->doclist.pList + ))){ Fts3Phrase *pPhrase = pExpr->pPhrase; - assert( pExpr->bDeferred || pPhrase->doclist.bFreeList==0 ); if( pExpr->bDeferred ){ fts3EvalInvalidatePoslist(pPhrase); } @@ -157719,7 +188187,10 @@ static int fts3EvalTestExpr( }else #endif { - bHit = (pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId); + bHit = ( + pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId + && pExpr->pPhrase->doclist.nList>0 + ); } break; } @@ -157761,7 +188232,7 @@ SQLITE_PRIVATE int sqlite3Fts3EvalTestDeferred(Fts3Cursor *pCsr, int *pRc){ ** memory and scan it to determine the position list for each deferred ** token. Then, see if this row is really a match, considering deferred ** tokens and NEAR operators (neither of which were taken into account - ** earlier, by fts3EvalNextRow()). + ** earlier, by fts3EvalNextRow()). */ if( pCsr->pDeferred ){ rc = fts3CursorSeek(0, pCsr); @@ -157816,7 +188287,7 @@ static int fts3EvalNext(Fts3Cursor *pCsr){ /* ** Restart interation for expression pExpr so that the next call to -** fts3EvalNext() visits the first row. Do not allow incremental +** fts3EvalNext() visits the first row. Do not allow incremental ** loading or merging of phrase doclists for this iteration. ** ** If *pRc is other than SQLITE_OK when this function is called, it is @@ -157859,22 +188330,21 @@ static void fts3EvalRestart( } /* -** After allocating the Fts3Expr.aMI[] array for each phrase in the +** After allocating the Fts3Expr.aMI[] array for each phrase in the ** expression rooted at pExpr, the cursor iterates through all rows matched ** by pExpr, calling this function for each row. This function increments ** the values in Fts3Expr.aMI[] according to the position-list currently -** found in Fts3Expr.pPhrase->doclist.pList for each of the phrase +** found in Fts3Expr.pPhrase->doclist.pList for each of the phrase ** expression nodes. */ -static void fts3EvalUpdateCounts(Fts3Expr *pExpr){ +static void fts3EvalUpdateCounts(Fts3Expr *pExpr, int nCol){ if( pExpr ){ Fts3Phrase *pPhrase = pExpr->pPhrase; if( pPhrase && pPhrase->doclist.pList ){ int iCol = 0; char *p = pPhrase->doclist.pList; - assert( *p ); - while( 1 ){ + do{ u8 c = 0; int iCnt = 0; while( 0xFE & (*p | c) ){ @@ -157890,14 +188360,30 @@ static void fts3EvalUpdateCounts(Fts3Expr *pExpr){ if( *p==0x00 ) break; p++; p += fts3GetVarint32(p, &iCol); - } + }while( iColpLeft); - fts3EvalUpdateCounts(pExpr->pRight); + fts3EvalUpdateCounts(pExpr->pLeft, nCol); + fts3EvalUpdateCounts(pExpr->pRight, nCol); } } +/* +** This is an sqlite3Fts3ExprIterate() callback. If the Fts3Expr.aMI[] array +** has not yet been allocated, allocate and zero it. Otherwise, just zero +** it. +*/ +static int fts3AllocateMSI(Fts3Expr *pExpr, int iPhrase, void *pCtx){ + Fts3Table *pTab = (Fts3Table*)pCtx; + UNUSED_PARAMETER(iPhrase); + if( pExpr->aMI==0 ){ + pExpr->aMI = (u32 *)sqlite3_malloc64(pTab->nColumn * 3 * sizeof(u32)); + if( pExpr->aMI==0 ) return SQLITE_NOMEM; + } + memset(pExpr->aMI, 0, pTab->nColumn * 3 * sizeof(u32)); + return SQLITE_OK; +} + /* ** Expression pExpr must be of type FTSQUERY_PHRASE. ** @@ -157919,7 +188405,6 @@ static int fts3EvalGatherStats( if( pExpr->aMI==0 ){ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; Fts3Expr *pRoot; /* Root of NEAR expression */ - Fts3Expr *p; /* Iterator used for several purposes */ sqlite3_int64 iPrevId = pCsr->iPrevId; sqlite3_int64 iDocid; @@ -157927,7 +188412,9 @@ static int fts3EvalGatherStats( /* Find the root of the NEAR expression */ pRoot = pExpr; - while( pRoot->pParent && pRoot->pParent->eType==FTSQUERY_NEAR ){ + while( pRoot->pParent + && (pRoot->pParent->eType==FTSQUERY_NEAR || pRoot->bDeferred) + ){ pRoot = pRoot->pParent; } iDocid = pRoot->iDocid; @@ -157935,14 +188422,8 @@ static int fts3EvalGatherStats( assert( pRoot->bStart ); /* Allocate space for the aMSI[] array of each FTSQUERY_PHRASE node */ - for(p=pRoot; p; p=p->pLeft){ - Fts3Expr *pE = (p->eType==FTSQUERY_PHRASE?p:p->pRight); - assert( pE->aMI==0 ); - pE->aMI = (u32 *)sqlite3_malloc(pTab->nColumn * 3 * sizeof(u32)); - if( !pE->aMI ) return SQLITE_NOMEM; - memset(pE->aMI, 0, pTab->nColumn * 3 * sizeof(u32)); - } - + rc = sqlite3Fts3ExprIterate(pRoot, fts3AllocateMSI, (void*)pTab); + if( rc!=SQLITE_OK ) return rc; fts3EvalRestart(pCsr, pRoot, &rc); while( pCsr->isEof==0 && rc==SQLITE_OK ){ @@ -157958,13 +188439,13 @@ static int fts3EvalGatherStats( pCsr->isRequireSeek = 1; pCsr->isMatchinfoNeeded = 1; pCsr->iPrevId = pRoot->iDocid; - }while( pCsr->isEof==0 - && pRoot->eType==FTSQUERY_NEAR - && sqlite3Fts3EvalTestDeferred(pCsr, &rc) + }while( pCsr->isEof==0 + && pRoot->eType==FTSQUERY_NEAR + && sqlite3Fts3EvalTestDeferred(pCsr, &rc) ); if( rc==SQLITE_OK && pCsr->isEof==0 ){ - fts3EvalUpdateCounts(pRoot); + fts3EvalUpdateCounts(pRoot, pTab->nColumn); } } @@ -157975,7 +188456,7 @@ static int fts3EvalGatherStats( pRoot->bEof = bEof; }else{ /* Caution: pRoot may iterate through docids in ascending or descending - ** order. For this reason, even though it seems more defensive, the + ** order. For this reason, even though it seems more defensive, the ** do loop can not be written: ** ** do {...} while( pRoot->iDocidbEof==0 ); + assert_fts3_nc( pRoot->bEof==0 ); + if( pRoot->bEof ) rc = FTS_CORRUPT_VTAB; }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK ); } } @@ -157991,10 +188473,10 @@ static int fts3EvalGatherStats( } /* -** This function is used by the matchinfo() module to query a phrase +** This function is used by the matchinfo() module to query a phrase ** expression node for the following information: ** -** 1. The total number of occurrences of the phrase in each column of +** 1. The total number of occurrences of the phrase in each column of ** the FTS table (considering all rows), and ** ** 2. For each column, the number of rows in the table for which the @@ -158008,12 +188490,12 @@ static int fts3EvalGatherStats( ** ** Caveats: ** -** * If a phrase consists entirely of deferred tokens, then all output +** * If a phrase consists entirely of deferred tokens, then all output ** values are set to the number of documents in the table. In other -** words we assume that very common tokens occur exactly once in each +** words we assume that very common tokens occur exactly once in each ** column of each row of the table. ** -** * If a phrase contains some deferred tokens (and some non-deferred +** * If a phrase contains some deferred tokens (and some non-deferred ** tokens), count the potential occurrence identified by considering ** the non-deferred tokens instead of actual phrase occurrences. ** @@ -158051,14 +188533,14 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats( /* ** The expression pExpr passed as the second argument to this function -** must be of type FTSQUERY_PHRASE. +** must be of type FTSQUERY_PHRASE. ** ** The returned value is either NULL or a pointer to a buffer containing ** a position-list indicating the occurrences of the phrase in column iCol -** of the current row. +** of the current row. ** -** More specifically, the returned buffer contains 1 varint for each -** occurrence of the phrase in the column, stored using the normal (delta+2) +** More specifically, the returned buffer contains 1 varint for each +** occurrence of the phrase in the column, stored using the normal (delta+2) ** compression and is terminated by either an 0x01 or 0x00 byte. For example, ** if the requested column contains "a b X c d X X" and the position-list ** for 'X' is requested, the buffer returned may contain: @@ -158080,7 +188562,7 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( int iThis; sqlite3_int64 iDocid; - /* If this phrase is applies specifically to some column other than + /* If this phrase is applies specifically to some column other than ** column iCol, return a NULL pointer. */ *ppOut = 0; assert( iCol>=0 && iColnColumn ); @@ -158097,10 +188579,11 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( u8 bTreeEof = 0; Fts3Expr *p; /* Used to iterate from pExpr to root */ Fts3Expr *pNear; /* Most senior NEAR ancestor (or pExpr) */ + Fts3Expr *pRun; /* Closest non-deferred ancestor of pNear */ int bMatch; - /* Check if this phrase descends from an OR expression node. If not, - ** return NULL. Otherwise, the entry that corresponds to docid + /* Check if this phrase descends from an OR expression node. If not, + ** return NULL. Otherwise, the entry that corresponds to docid ** pCsr->iPrevId may lie earlier in the doclist buffer. Or, if the ** tree that the node is part of has been marked as EOF, but the node ** itself is not EOF, then it may point to an earlier entry. */ @@ -158111,22 +188594,30 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( if( p->bEof ) bTreeEof = 1; } if( bOr==0 ) return SQLITE_OK; + pRun = pNear; + while( pRun->bDeferred ){ + assert( pRun->pParent ); + pRun = pRun->pParent; + } /* This is the descendent of an OR node. In this case we cannot use ** an incremental phrase. Load the entire doclist for the phrase ** into memory in this case. */ if( pPhrase->bIncr ){ - int bEofSave = pNear->bEof; - fts3EvalRestart(pCsr, pNear, &rc); - while( rc==SQLITE_OK && !pNear->bEof ){ - fts3EvalNextRow(pCsr, pNear, &rc); - if( bEofSave==0 && pNear->iDocid==iDocid ) break; + int bEofSave = pRun->bEof; + fts3EvalRestart(pCsr, pRun, &rc); + while( rc==SQLITE_OK && !pRun->bEof ){ + fts3EvalNextRow(pCsr, pRun, &rc); + if( bEofSave==0 && pRun->iDocid==iDocid ) break; } assert( rc!=SQLITE_OK || pPhrase->bIncr==0 ); + if( rc==SQLITE_OK && pRun->bEof!=bEofSave ){ + rc = FTS_CORRUPT_VTAB; + } } if( bTreeEof ){ - while( rc==SQLITE_OK && !pNear->bEof ){ - fts3EvalNextRow(pCsr, pNear, &rc); + while( rc==SQLITE_OK && !pRun->bEof ){ + fts3EvalNextRow(pCsr, pRun, &rc); } } if( rc!=SQLITE_OK ) return rc; @@ -158148,7 +188639,7 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( (pIter >= (pPh->doclist.aAll + pPh->doclist.nAll)); while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)<0 ) && bEof==0 ){ sqlite3Fts3DoclistNext( - bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, + bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, &pIter, &iDocid, &bEof ); } @@ -158157,7 +188648,7 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)>0 ) && bEof==0 ){ int dummy; sqlite3Fts3DoclistPrev( - bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, + bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, &pIter, &iDocid, &dummy, &bEof ); } @@ -158233,7 +188724,7 @@ SQLITE_PRIVATE int sqlite3Fts3Corrupt(){ __declspec(dllexport) #endif SQLITE_API int sqlite3_fts3_init( - sqlite3 *db, + sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi ){ @@ -158314,7 +188805,7 @@ static int fts3auxConnectMethod( char const *zFts3; /* Name of fts3 table */ int nDb; /* Result of strlen(zDb) */ int nFts3; /* Result of strlen(zFts3) */ - int nByte; /* Bytes of space to allocate here */ + sqlite3_int64 nByte; /* Bytes of space to allocate here */ int rc; /* value returned by declare_vtab() */ Fts3auxTable *p; /* Virtual table object to return */ @@ -158327,11 +188818,11 @@ static int fts3auxConnectMethod( */ if( argc!=4 && argc!=5 ) goto bad_args; - zDb = argv[1]; + zDb = argv[1]; nDb = (int)strlen(zDb); if( argc==5 ){ if( nDb==4 && 0==sqlite3_strnicmp("temp", zDb, 4) ){ - zDb = argv[3]; + zDb = argv[3]; nDb = (int)strlen(zDb); zFts3 = argv[4]; }else{ @@ -158346,7 +188837,7 @@ static int fts3auxConnectMethod( if( rc!=SQLITE_OK ) return rc; nByte = sizeof(Fts3auxTable) + sizeof(Fts3Table) + nDb + nFts3 + 2; - p = (Fts3auxTable *)sqlite3_malloc(nByte); + p = (Fts3auxTable *)sqlite3_malloc64(nByte); if( !p ) return SQLITE_NOMEM; memset(p, 0, nByte); @@ -158395,7 +188886,7 @@ static int fts3auxDisconnectMethod(sqlite3_vtab *pVtab){ ** xBestIndex - Analyze a WHERE and ORDER BY clause. */ static int fts3auxBestIndexMethod( - sqlite3_vtab *pVTab, + sqlite3_vtab *pVTab, sqlite3_index_info *pInfo ){ int i; @@ -158408,14 +188899,14 @@ static int fts3auxBestIndexMethod( UNUSED_PARAMETER(pVTab); /* This vtab delivers always results in "ORDER BY term ASC" order. */ - if( pInfo->nOrderBy==1 - && pInfo->aOrderBy[0].iColumn==0 + if( pInfo->nOrderBy==1 + && pInfo->aOrderBy[0].iColumn==0 && pInfo->aOrderBy[0].desc==0 ){ pInfo->orderByConsumed = 1; } - /* Search for equality and range constraints on the "term" column. + /* Search for equality and range constraints on the "term" column. ** And equality constraints on the hidden "languageid" column. */ for(i=0; inConstraint; i++){ if( pInfo->aConstraint[i].usable ){ @@ -158496,11 +188987,11 @@ static int fts3auxCloseMethod(sqlite3_vtab_cursor *pCursor){ static int fts3auxGrowStatArray(Fts3auxCursor *pCsr, int nSize){ if( nSize>pCsr->nStat ){ struct Fts3auxColstats *aNew; - aNew = (struct Fts3auxColstats *)sqlite3_realloc(pCsr->aStat, + aNew = (struct Fts3auxColstats *)sqlite3_realloc64(pCsr->aStat, sizeof(struct Fts3auxColstats) * nSize ); if( aNew==0 ) return SQLITE_NOMEM; - memset(&aNew[pCsr->nStat], 0, + memset(&aNew[pCsr->nStat], 0, sizeof(struct Fts3auxColstats) * (nSize - pCsr->nStat) ); pCsr->aStat = aNew; @@ -158545,6 +189036,7 @@ static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){ if( fts3auxGrowStatArray(pCsr, 2) ) return SQLITE_NOMEM; memset(pCsr->aStat, 0, sizeof(struct Fts3auxColstats) * pCsr->nStat); iCol = 0; + rc = SQLITE_OK; while( iaStat[iCol+1].nDoc++; eState = 2; @@ -158596,7 +189092,6 @@ static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){ } pCsr->iCol = 0; - rc = SQLITE_OK; }else{ pCsr->isEof = 1; } @@ -158654,6 +189149,7 @@ static int fts3auxFilterMethod( sqlite3Fts3SegReaderFinish(&pCsr->csr); sqlite3_free((void *)pCsr->filter.zTerm); sqlite3_free(pCsr->aStat); + sqlite3_free(pCsr->zStop); memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr); pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY; @@ -158664,17 +189160,17 @@ static int fts3auxFilterMethod( assert( (iEq==0 && iGe==-1) || (iEq==-1 && iGe==0) ); if( zStr ){ pCsr->filter.zTerm = sqlite3_mprintf("%s", zStr); - pCsr->filter.nTerm = sqlite3_value_bytes(apVal[0]); if( pCsr->filter.zTerm==0 ) return SQLITE_NOMEM; + pCsr->filter.nTerm = (int)strlen(pCsr->filter.zTerm); } } if( iLe>=0 ){ pCsr->zStop = sqlite3_mprintf("%s", sqlite3_value_text(apVal[iLe])); - pCsr->nStop = sqlite3_value_bytes(apVal[iLe]); if( pCsr->zStop==0 ) return SQLITE_NOMEM; + pCsr->nStop = (int)strlen(pCsr->zStop); } - + if( iLangid>=0 ){ iLangVal = sqlite3_value_int(apVal[iLangid]); @@ -158787,7 +189283,8 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ 0, /* xRename */ 0, /* xSavepoint */ 0, /* xRelease */ - 0 /* xRollbackTo */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ }; int rc; /* Return code */ @@ -158812,15 +189309,15 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ ****************************************************************************** ** ** This module contains code that implements a parser for fts3 query strings -** (the right-hand argument to the MATCH operator). Because the supported +** (the right-hand argument to the MATCH operator). Because the supported ** syntax is relatively simple, the whole tokenizer/parser system is -** hand-coded. +** hand-coded. */ /* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* -** By default, this module parses the legacy syntax that has been +** By default, this module parses the legacy syntax that has been ** traditionally used by fts3. Or, if SQLITE_ENABLE_FTS3_PARENTHESIS ** is defined, then it uses the new syntax. The differences between ** the new and the old syntaxes are: @@ -158829,7 +189326,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ ** ** b) The new syntax supports the AND and NOT operators. The old does not. ** -** c) The old syntax supports the "-" token qualifier. This is not +** c) The old syntax supports the "-" token qualifier. This is not ** supported by the new syntax (it is replaced by the NOT operator). ** ** d) When using the old syntax, the OR operator has a greater precedence @@ -158838,7 +189335,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ ** ** If compiled with SQLITE_TEST defined, then this module exports the ** symbol "int sqlite3_fts3_enable_parentheses". Setting this variable -** to zero causes the module to use the old syntax. If it is set to +** to zero causes the module to use the old syntax. If it is set to ** non-zero the new syntax is activated. This is so both syntaxes can ** be tested using a single build of testfixture. ** @@ -158867,7 +189364,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ #ifdef SQLITE_TEST SQLITE_API int sqlite3_fts3_enable_parentheses = 0; #else -# ifdef SQLITE_ENABLE_FTS3_PARENTHESIS +# ifdef SQLITE_ENABLE_FTS3_PARENTHESIS # define sqlite3_fts3_enable_parentheses 1 # else # define sqlite3_fts3_enable_parentheses 0 @@ -158885,7 +189382,7 @@ SQLITE_API int sqlite3_fts3_enable_parentheses = 0; /* ** isNot: ** This variable is used by function getNextNode(). When getNextNode() is -** called, it sets ParseContext.isNot to true if the 'next node' is a +** called, it sets ParseContext.isNot to true if the 'next node' is a ** FTSQUERY_PHRASE with a unary "-" attached to it. i.e. "mysql" in the ** FTS3 query "sqlite -mysql". Otherwise, ParseContext.isNot is set to ** zero. @@ -158904,7 +189401,7 @@ struct ParseContext { }; /* -** This function is equivalent to the standard isspace() function. +** This function is equivalent to the standard isspace() function. ** ** The standard isspace() can be awkward to use safely, because although it ** is defined to accept an argument of type int, its behavior when passed @@ -158920,11 +189417,11 @@ static int fts3isspace(char c){ /* ** Allocate nByte bytes of memory using sqlite3_malloc(). If successful, -** zero the memory before returning a pointer to it. If unsuccessful, +** zero the memory before returning a pointer to it. If unsuccessful, ** return NULL. */ -static void *fts3MallocZero(int nByte){ - void *pRet = sqlite3_malloc(nByte); +SQLITE_PRIVATE void *sqlite3Fts3MallocZero(sqlite3_int64 nByte){ + void *pRet = sqlite3_malloc64(nByte); if( pRet ) memset(pRet, 0, nByte); return pRet; } @@ -158968,7 +189465,7 @@ static int fts3ExprParse(ParseContext *, const char *, int, Fts3Expr **, int *); ** structure of type FTSQUERY_PHRASE containing a phrase consisting of this ** single token and set *ppExpr to point to it. If the end of the buffer is ** reached before a token is found, set *ppExpr to zero. It is the -** responsibility of the caller to eventually deallocate the allocated +** responsibility of the caller to eventually deallocate the allocated ** Fts3Expr structure (if any) by passing it to sqlite3_free(). ** ** Return SQLITE_OK if successful, or SQLITE_NOMEM if a memory allocation @@ -158999,12 +189496,12 @@ static int getNextToken( if( rc==SQLITE_OK ){ const char *zToken; int nToken = 0, iStart = 0, iEnd = 0, iPosition = 0; - int nByte; /* total space to allocate */ + sqlite3_int64 nByte; /* total space to allocate */ rc = pModule->xNext(pCursor, &zToken, &nToken, &iStart, &iEnd, &iPosition); if( rc==SQLITE_OK ){ nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase) + nToken; - pRet = (Fts3Expr *)fts3MallocZero(nByte); + pRet = (Fts3Expr *)sqlite3Fts3MallocZero(nByte); if( !pRet ){ rc = SQLITE_NOMEM; }else{ @@ -159022,8 +189519,8 @@ static int getNextToken( } while( 1 ){ - if( !sqlite3_fts3_enable_parentheses - && iStart>0 && z[iStart-1]=='-' + if( !sqlite3_fts3_enable_parentheses + && iStart>0 && z[iStart-1]=='-' ){ pParse->isNot = 1; iStart--; @@ -159043,7 +189540,7 @@ static int getNextToken( pModule->xClose(pCursor); } - + *ppExpr = pRet; return rc; } @@ -159053,8 +189550,8 @@ static int getNextToken( ** Enlarge a memory allocation. If an out-of-memory allocation occurs, ** then free the old allocation. */ -static void *fts3ReallocOrFree(void *pOrig, int nNew){ - void *pRet = sqlite3_realloc(pOrig, nNew); +static void *fts3ReallocOrFree(void *pOrig, sqlite3_int64 nNew){ + void *pRet = sqlite3_realloc64(pOrig, nNew); if( !pRet ){ sqlite3_free(pOrig); } @@ -159065,7 +189562,7 @@ static void *fts3ReallocOrFree(void *pOrig, int nNew){ ** Buffer zInput, length nInput, contains the contents of a quoted string ** that appeared as part of an fts3 query expression. Neither quote character ** is included in the buffer. This function attempts to tokenize the entire -** input buffer and create an Fts3Expr structure of type FTSQUERY_PHRASE +** input buffer and create an Fts3Expr structure of type FTSQUERY_PHRASE ** containing the results. ** ** If successful, SQLITE_OK is returned and *ppExpr set to point at the @@ -159090,7 +189587,7 @@ static int getNextString( int nToken = 0; /* The final Fts3Expr data structure, including the Fts3Phrase, - ** Fts3PhraseToken structures token buffers are all stored as a single + ** Fts3PhraseToken structures token buffers are all stored as a single ** allocation so that the expression can be freed with a single call to ** sqlite3_free(). Setting this up requires a two pass approach. ** @@ -159099,7 +189596,7 @@ static int getNextString( ** to assemble data in two dynamic buffers: ** ** Buffer p: Points to the Fts3Expr structure, followed by the Fts3Phrase - ** structure, followed by the array of Fts3PhraseToken + ** structure, followed by the array of Fts3PhraseToken ** structures. This pass only populates the Fts3PhraseToken array. ** ** Buffer zTemp: Contains copies of all tokens. @@ -159184,7 +189681,7 @@ no_mem: } /* -** The output variable *ppExpr is populated with an allocated Fts3Expr +** The output variable *ppExpr is populated with an allocated Fts3Expr ** structure, or set to 0 if the end of the input buffer is reached. ** ** Returns an SQLite error code. SQLITE_OK if everything works, SQLITE_NOMEM @@ -159220,7 +189717,7 @@ static int getNextNode( pParse->isNot = 0; /* Skip over any whitespace before checking for a keyword, an open or - ** close bracket, or a quoted string. + ** close bracket, or a quoted string. */ while( nInput>0 && fts3isspace(*zInput) ){ nInput--; @@ -159247,22 +189744,19 @@ static int getNextNode( if( pKey->eType==FTSQUERY_NEAR ){ assert( nKey==4 ); if( zInput[4]=='/' && zInput[5]>='0' && zInput[5]<='9' ){ - nNear = 0; - for(nKey=5; zInput[nKey]>='0' && zInput[nKey]<='9'; nKey++){ - nNear = nNear * 10 + (zInput[nKey] - '0'); - } + nKey += 1+sqlite3Fts3ReadInt(&zInput[nKey+1], &nNear); } } /* At this point this is probably a keyword. But for that to be true, ** the next byte must contain either whitespace, an open or close - ** parenthesis, a quote character, or EOF. + ** parenthesis, a quote character, or EOF. */ cNext = zInput[nKey]; - if( fts3isspace(cNext) + if( fts3isspace(cNext) || cNext=='"' || cNext=='(' || cNext==')' || cNext==0 ){ - pRet = (Fts3Expr *)fts3MallocZero(sizeof(Fts3Expr)); + pRet = (Fts3Expr *)sqlite3Fts3MallocZero(sizeof(Fts3Expr)); if( !pRet ){ return SQLITE_NOMEM; } @@ -159297,8 +189791,12 @@ static int getNextNode( if( *zInput=='(' ){ int nConsumed = 0; pParse->nNest++; +#if !defined(SQLITE_MAX_EXPR_DEPTH) + if( pParse->nNest>1000 ) return SQLITE_ERROR; +#elif SQLITE_MAX_EXPR_DEPTH>0 + if( pParse->nNest>SQLITE_MAX_EXPR_DEPTH ) return SQLITE_ERROR; +#endif rc = fts3ExprParse(pParse, zInput+1, nInput-1, ppExpr, &nConsumed); - if( rc==SQLITE_OK && !*ppExpr ){ rc = SQLITE_DONE; } *pnConsumed = (int)(zInput - z) + 1 + nConsumed; return rc; }else if( *zInput==')' ){ @@ -159309,15 +189807,15 @@ static int getNextNode( } } - /* If control flows to this point, this must be a regular token, or + /* If control flows to this point, this must be a regular token, or ** the end of the input. Read a regular token using the sqlite3_tokenizer ** interface. Before doing so, figure out if there is an explicit - ** column specifier for the token. + ** column specifier for the token. ** ** TODO: Strangely, it is not possible to associate a column specifier ** with a quoted phrase, only with a single token. Not sure if this was ** an implementation artifact or an intentional decision when fts3 was - ** first implemented. Whichever it was, this module duplicates the + ** first implemented. Whichever it was, this module duplicates the ** limitation. */ iCol = pParse->iDefaultCol; @@ -159325,8 +189823,8 @@ static int getNextNode( for(ii=0; iinCol; ii++){ const char *zStr = pParse->azCol[ii]; int nStr = (int)strlen(zStr); - if( nInput>nStr && zInput[nStr]==':' - && sqlite3_strnicmp(zStr, zInput, nStr)==0 + if( nInput>nStr && zInput[nStr]==':' + && sqlite3_strnicmp(zStr, zInput, nStr)==0 ){ iCol = ii; iColLen = (int)((zInput - z) + nStr + 1); @@ -159371,7 +189869,7 @@ static int opPrecedence(Fts3Expr *p){ } /* -** Argument ppHead contains a pointer to the current head of a query +** Argument ppHead contains a pointer to the current head of a query ** expression tree being parsed. pPrev is the expression node most recently ** inserted into the tree. This function adds pNew, which is always a binary ** operator node, into the expression tree based on the relative precedence @@ -159401,7 +189899,7 @@ static void insertBinaryOperator( /* ** Parse the fts3 query expression found in buffer z, length n. This function -** returns either when the end of the buffer is reached or an unmatched +** returns either when the end of the buffer is reached or an unmatched ** closing bracket - ')' - is encountered. ** ** If successful, SQLITE_OK is returned, *ppExpr is set to point to the @@ -159433,11 +189931,11 @@ static int fts3ExprParse( if( p ){ int isPhrase; - if( !sqlite3_fts3_enable_parentheses - && p->eType==FTSQUERY_PHRASE && pParse->isNot + if( !sqlite3_fts3_enable_parentheses + && p->eType==FTSQUERY_PHRASE && pParse->isNot ){ /* Create an implicit NOT operator. */ - Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr)); + Fts3Expr *pNot = sqlite3Fts3MallocZero(sizeof(Fts3Expr)); if( !pNot ){ sqlite3Fts3ExprFree(p); rc = SQLITE_NOMEM; @@ -159471,7 +189969,7 @@ static int fts3ExprParse( /* Insert an implicit AND operator. */ Fts3Expr *pAnd; assert( pRet && pPrev ); - pAnd = fts3MallocZero(sizeof(Fts3Expr)); + pAnd = sqlite3Fts3MallocZero(sizeof(Fts3Expr)); if( !pAnd ){ sqlite3Fts3ExprFree(p); rc = SQLITE_NOMEM; @@ -159555,13 +190053,13 @@ exprparse_out: } /* -** Return SQLITE_ERROR if the maximum depth of the expression tree passed +** Return SQLITE_ERROR if the maximum depth of the expression tree passed ** as the only argument is more than nMaxDepth. */ static int fts3ExprCheckDepth(Fts3Expr *p, int nMaxDepth){ int rc = SQLITE_OK; if( p ){ - if( nMaxDepth<0 ){ + if( nMaxDepth<0 ){ rc = SQLITE_TOOBIG; }else{ rc = fts3ExprCheckDepth(p->pLeft, nMaxDepth-1); @@ -159576,12 +190074,12 @@ static int fts3ExprCheckDepth(Fts3Expr *p, int nMaxDepth){ /* ** This function attempts to transform the expression tree at (*pp) to ** an equivalent but more balanced form. The tree is modified in place. -** If successful, SQLITE_OK is returned and (*pp) set to point to the -** new root expression node. +** If successful, SQLITE_OK is returned and (*pp) set to point to the +** new root expression node. ** ** nMaxDepth is the maximum allowable depth of the balanced sub-tree. ** -** Otherwise, if an error occurs, an SQLite error code is returned and +** Otherwise, if an error occurs, an SQLite error code is returned and ** expression (*pp) freed. */ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ @@ -159597,7 +190095,7 @@ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ if( rc==SQLITE_OK ){ if( (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ Fts3Expr **apLeaf; - apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); + apLeaf = (Fts3Expr **)sqlite3_malloc64(sizeof(Fts3Expr *) * nMaxDepth); if( 0==apLeaf ){ rc = SQLITE_NOMEM; }else{ @@ -159696,7 +190194,7 @@ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ } pRoot = p; }else{ - /* An error occurred. Delete the contents of the apLeaf[] array + /* An error occurred. Delete the contents of the apLeaf[] array ** and pFree list. Everything else is cleaned up by the call to ** sqlite3Fts3ExprFree(pRoot) below. */ Fts3Expr *pDel; @@ -159738,7 +190236,7 @@ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ } } } - + if( rc!=SQLITE_OK ){ sqlite3Fts3ExprFree(pRoot); pRoot = 0; @@ -159752,9 +190250,9 @@ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ ** differences: ** ** 1. It does not do expression rebalancing. -** 2. It does not check that the expression does not exceed the +** 2. It does not check that the expression does not exceed the ** maximum allowable depth. -** 3. Even if it fails, *ppExpr may still be set to point to an +** 3. Even if it fails, *ppExpr may still be set to point to an ** expression tree. It should be deleted using sqlite3Fts3ExprFree() ** in this case. */ @@ -159793,7 +190291,7 @@ static int fts3ExprParseUnbalanced( if( rc==SQLITE_OK && sParse.nNest ){ rc = SQLITE_ERROR; } - + return rc; } @@ -159812,7 +190310,7 @@ static int fts3ExprParseUnbalanced( ** The first parameter, pTokenizer, is passed the fts3 tokenizer module to ** use to normalize query tokens while parsing the expression. The azCol[] ** array, which is assumed to contain nCol entries, should contain the names -** of each column in the target fts3 table, in order from left to right. +** of each column in the target fts3 table, in order from left to right. ** Column names must be nul-terminated strings. ** ** The iDefaultCol parameter should be passed the index of the table column @@ -159835,7 +190333,7 @@ SQLITE_PRIVATE int sqlite3Fts3ExprParse( int rc = fts3ExprParseUnbalanced( pTokenizer, iLangid, azCol, bFts4, nCol, iDefaultCol, z, n, ppExpr ); - + /* Rebalance the expression. And check that its depth does not exceed ** SQLITE_FTS3_MAX_EXPR_DEPTH. */ if( rc==SQLITE_OK && *ppExpr ){ @@ -159850,7 +190348,7 @@ SQLITE_PRIVATE int sqlite3Fts3ExprParse( *ppExpr = 0; if( rc==SQLITE_TOOBIG ){ sqlite3Fts3ErrMsg(pzErr, - "FTS expression tree is too large (maximum depth %d)", + "FTS expression tree is too large (maximum depth %d)", SQLITE_FTS3_MAX_EXPR_DEPTH ); rc = SQLITE_ERROR; @@ -159912,11 +190410,11 @@ SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *pDel){ /* ** Return a pointer to a buffer containing a text representation of the ** expression passed as the first argument. The buffer is obtained from -** sqlite3_malloc(). It is the responsibility of the caller to use +** sqlite3_malloc(). It is the responsibility of the caller to use ** sqlite3_free() to release the memory. If an OOM condition is encountered, ** NULL is returned. ** -** If the second argument is not NULL, then its contents are prepended to +** If the second argument is not NULL, then its contents are prepended to ** the returned expression text and then freed using sqlite3_free(). */ static char *exprToString(Fts3Expr *pExpr, char *zBuf){ @@ -159930,7 +190428,7 @@ static char *exprToString(Fts3Expr *pExpr, char *zBuf){ zBuf = sqlite3_mprintf( "%zPHRASE %d 0", zBuf, pPhrase->iColumn); for(i=0; zBuf && inToken; i++){ - zBuf = sqlite3_mprintf("%z %.*s%s", zBuf, + zBuf = sqlite3_mprintf("%z %.*s%s", zBuf, pPhrase->aToken[i].n, pPhrase->aToken[i].z, (pPhrase->aToken[i].isPrefix?"+":"") ); @@ -159963,7 +190461,7 @@ static char *exprToString(Fts3Expr *pExpr, char *zBuf){ } /* -** This is the implementation of a scalar SQL function used to test the +** This is the implementation of a scalar SQL function used to test the ** expression parser. It should be called as follows: ** ** fts3_exprtest(, , , ...); @@ -159996,7 +190494,7 @@ static void fts3ExprTestCommon( char *zErr = 0; if( argc<3 ){ - sqlite3_result_error(context, + sqlite3_result_error(context, "Usage: fts3_exprtest(tokenizer, expr, col1, ...", -1 ); return; @@ -160017,7 +190515,7 @@ static void fts3ExprTestCommon( zExpr = (const char *)sqlite3_value_text(argv[1]); nExpr = sqlite3_value_bytes(argv[1]); nCol = argc-2; - azCol = (char **)sqlite3_malloc(nCol*sizeof(char *)); + azCol = (char **)sqlite3_malloc64(nCol*sizeof(char *)); if( !azCol ){ sqlite3_result_error_nomem(context); goto exprtest_out; @@ -160074,15 +190572,15 @@ static void fts3ExprTestRebalance( } /* -** Register the query expression parser test function fts3_exprtest() -** with database connection db. +** Register the query expression parser test function fts3_exprtest() +** with database connection db. */ SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash *pHash){ int rc = sqlite3_create_function( db, "fts3_exprtest", -1, SQLITE_UTF8, (void*)pHash, fts3ExprTest, 0, 0 ); if( rc==SQLITE_OK ){ - rc = sqlite3_create_function(db, "fts3_exprtest_rebalance", + rc = sqlite3_create_function(db, "fts3_exprtest_rebalance", -1, SQLITE_UTF8, (void*)pHash, fts3ExprTestRebalance, 0, 0 ); } @@ -160131,8 +190629,8 @@ SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash *pHash /* ** Malloc and Free functions */ -static void *fts3HashMalloc(int n){ - void *p = sqlite3_malloc(n); +static void *fts3HashMalloc(sqlite3_int64 n){ + void *p = sqlite3_malloc64(n); if( p ){ memset(p, 0, n); } @@ -160146,8 +190644,8 @@ static void fts3HashFree(void *p){ ** fields of the Hash structure. ** ** "pNew" is a pointer to the hash table that is to be initialized. -** keyClass is one of the constants -** FTS3_HASH_BINARY or FTS3_HASH_STRING. The value of keyClass +** keyClass is one of the constants +** FTS3_HASH_BINARY or FTS3_HASH_STRING. The value of keyClass ** determines what kind of key the hash table will use. "copyKey" is ** true if the hash table should make its own private copy of keys and ** false if it should just use the supplied pointer. @@ -160224,7 +190722,7 @@ static int fts3BinCompare(const void *pKey1, int n1, const void *pKey2, int n2){ /* ** Return a pointer to the appropriate hash function given the key class. ** -** The C syntax in this function definition may be unfamilar to some +** The C syntax in this function definition may be unfamilar to some ** programmers, so we provide the following additional explanation: ** ** The name of the function is "ftsHashFunction". The function takes a @@ -160284,7 +190782,7 @@ static void fts3HashInsertElement( /* Resize the hash table so that it cantains "new_size" buckets. -** "new_size" must be a power of 2. The hash table might fail +** "new_size" must be a power of 2. The hash table might fail ** to resize if sqliteMalloc() fails. ** ** Return non-zero if a memory allocation error occurs. @@ -160329,7 +190827,7 @@ static Fts3HashElem *fts3FindElementByHash( count = pEntry->count; xCompare = ftsCompareFunction(pH->keyClass); while( count-- && elem ){ - if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ + if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ return elem; } elem = elem->next; @@ -160348,7 +190846,7 @@ static void fts3RemoveElementByHash( ){ struct _fts3ht *pEntry; if( elem->prev ){ - elem->prev->next = elem->next; + elem->prev->next = elem->next; }else{ pH->first = elem->next; } @@ -160376,8 +190874,8 @@ static void fts3RemoveElementByHash( } SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem( - const Fts3Hash *pH, - const void *pKey, + const Fts3Hash *pH, + const void *pKey, int nKey ){ int h; /* A hash on key */ @@ -160391,7 +190889,7 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem( return fts3FindElementByHash(pH,pKey,nKey, h & (pH->htsize-1)); } -/* +/* ** Attempt to locate an element of the hash table pH with a key ** that matches pKey,nKey. Return the data for this element if it is ** found, or NULL if there is no match. @@ -160565,7 +191063,7 @@ static int porterDestroy(sqlite3_tokenizer *pTokenizer){ /* ** Prepare to begin tokenizing a particular string. The input ** string to be tokenized is zInput[0..nInput-1]. A cursor -** used to incrementally tokenize this string is returned in +** used to incrementally tokenize this string is returned in ** *ppCursor. */ static int porterOpen( @@ -160618,7 +191116,7 @@ static const char cType[] = { /* ** isConsonant() and isVowel() determine if their first character in ** the string they point to is a consonant or a vowel, according -** to Porter ruls. +** to Porter ruls. ** ** A consonate is any letter other than 'a', 'e', 'i', 'o', or 'u'. ** 'Y' is a consonant unless it follows another consonant, @@ -160738,11 +191236,11 @@ static int star_oh(const char *z){ /* ** If the word ends with zFrom and xCond() is true for the stem -** of the word that preceeds the zFrom ending, then change the +** of the word that preceeds the zFrom ending, then change the ** ending to zTo. ** ** The input word *pz and zFrom are both in reverse order. zTo -** is in normal order. +** is in normal order. ** ** Return TRUE if zFrom matches. Return FALSE if zFrom does not ** match. Not that TRUE is returned even if xCond() fails and @@ -160811,9 +191309,9 @@ static void copy_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ ** word contains digits, 3 bytes are taken from the beginning and ** 3 bytes from the end. For long words without digits, 10 bytes ** are taken from each end. US-ASCII case folding still applies. -** -** If the input word contains not digits but does characters not -** in [a-zA-Z] then no stemming is attempted and this routine just +** +** If the input word contains not digits but does characters not +** in [a-zA-Z] then no stemming is attempted and this routine just ** copies the input into the input into the output with US-ASCII ** case folding. ** @@ -160858,11 +191356,11 @@ static void porter_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ } } - /* Step 1b */ + /* Step 1b */ z2 = z; if( stem(&z, "dee", "ee", m_gt_0) ){ /* Do nothing. The work was all in the test */ - }else if( + }else if( (stem(&z, "gni", "", hasVowel) || stem(&z, "de", "", hasVowel)) && z!=z2 ){ @@ -160901,7 +191399,7 @@ static void porter_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ stem(&z, "igol", "log", m_gt_0); break; case 'l': - if( !stem(&z, "ilb", "ble", m_gt_0) + if( !stem(&z, "ilb", "ble", m_gt_0) && !stem(&z, "illa", "al", m_gt_0) && !stem(&z, "iltne", "ent", m_gt_0) && !stem(&z, "ile", "e", m_gt_0) @@ -161103,7 +191601,7 @@ static int porterNext( if( n>c->nAllocated ){ char *pNew; c->nAllocated = n+20; - pNew = sqlite3_realloc(c->zToken, c->nAllocated); + pNew = sqlite3_realloc64(c->zToken, c->nAllocated); if( !pNew ) return SQLITE_NOMEM; c->zToken = pNew; } @@ -161189,7 +191687,7 @@ static int fts3TokenizerEnabled(sqlite3_context *context){ } /* -** Implementation of the SQL scalar function for accessing the underlying +** Implementation of the SQL scalar function for accessing the underlying ** hash table. This function may be called as follows: ** ** SELECT (); @@ -161226,7 +191724,7 @@ static void fts3TokenizerFunc( nName = sqlite3_value_bytes(argv[0])+1; if( argc==2 ){ - if( fts3TokenizerEnabled(context) ){ + if( fts3TokenizerEnabled(context) || sqlite3_value_frombind(argv[1]) ){ void *pOld; int n = sqlite3_value_bytes(argv[1]); if( zName==0 || n!=sizeof(pPtr) ){ @@ -161253,7 +191751,9 @@ static void fts3TokenizerFunc( return; } } - sqlite3_result_blob(context, (void *)&pPtr, sizeof(pPtr), SQLITE_TRANSIENT); + if( fts3TokenizerEnabled(context) || sqlite3_value_frombind(argv[0]) ){ + sqlite3_result_blob(context, (void *)&pPtr, sizeof(pPtr), SQLITE_TRANSIENT); + } } SQLITE_PRIVATE int sqlite3Fts3IsIdChar(char c){ @@ -161341,8 +191841,8 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( int iArg = 0; z = &z[n+1]; while( zpModule = m; + (*ppTok)->pModule = m; } sqlite3_free((void *)aArg); } @@ -161379,7 +191879,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( /* #include */ /* -** Implementation of a special SQL scalar function for testing tokenizers +** Implementation of a special SQL scalar function for testing tokenizers ** designed to be used in concert with the Tcl testing framework. This ** function must be called with two or more arguments: ** @@ -161391,9 +191891,9 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( ** ** The return value is a string that may be interpreted as a Tcl ** list. For each token in the , three elements are -** added to the returned list. The first is the token position, the +** added to the returned list. The first is the token position, the ** second is the token text (folded, stemmed, etc.) and the third is the -** substring of associated with the token. For example, +** substring of associated with the token. For example, ** using the built-in "simple" tokenizer: ** ** SELECT fts_tokenizer_test('simple', 'I don't see how'); @@ -161401,7 +191901,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( ** will return the string: ** ** "{0 i I 1 dont don't 2 see see 3 how how}" -** +** */ static void testFunc( sqlite3_context *context, @@ -161496,8 +191996,8 @@ finish: static int registerTokenizer( - sqlite3 *db, - char *zName, + sqlite3 *db, + char *zName, const sqlite3_tokenizer_module *p ){ int rc; @@ -161519,8 +192019,8 @@ int registerTokenizer( static int queryTokenizer( - sqlite3 *db, - char *zName, + sqlite3 *db, + char *zName, const sqlite3_tokenizer_module **pp ){ int rc; @@ -161535,7 +192035,9 @@ int queryTokenizer( sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ + if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB + && sqlite3_column_bytes(pStmt, 0)==sizeof(*pp) + ){ memcpy((void *)pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); } } @@ -161603,28 +192105,28 @@ static void intTestFunc( /* ** Set up SQL objects in database db used to access the contents of ** the hash table pointed to by argument pHash. The hash table must -** been initialized to use string keys, and to take a private copy +** been initialized to use string keys, and to take a private copy ** of the key when a value is inserted. i.e. by a call similar to: ** ** sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1); ** ** This function adds a scalar function (see header comment above ** fts3TokenizerFunc() in this file for details) and, if ENABLE_TABLE is -** defined at compilation time, a temporary virtual table (see header -** comment above struct HashTableVtab) to the database schema. Both +** defined at compilation time, a temporary virtual table (see header +** comment above struct HashTableVtab) to the database schema. Both ** provide read/write access to the contents of *pHash. ** ** The third argument to this function, zName, is used as the name ** of both the scalar and, if created, the virtual table. */ SQLITE_PRIVATE int sqlite3Fts3InitHashTable( - sqlite3 *db, - Fts3Hash *pHash, + sqlite3 *db, + Fts3Hash *pHash, const char *zName ){ int rc = SQLITE_OK; void *p = (void *)pHash; - const int any = SQLITE_ANY; + const int any = SQLITE_UTF8|SQLITE_DIRECTONLY; #ifdef SQLITE_TEST char *zTest = 0; @@ -161773,7 +192275,7 @@ static int simpleDestroy(sqlite3_tokenizer *pTokenizer){ /* ** Prepare to begin tokenizing a particular string. The input ** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in +** used to incrementally tokenize this string is returned in ** *ppCursor. */ static int simpleOpen( @@ -161851,7 +192353,7 @@ static int simpleNext( if( n>c->nTokenAllocated ){ char *pNew; c->nTokenAllocated = n+20; - pNew = sqlite3_realloc(c->pToken, c->nTokenAllocated); + pNew = sqlite3_realloc64(c->pToken, c->nTokenAllocated); if( !pNew ) return SQLITE_NOMEM; c->pToken = pNew; } @@ -161928,8 +192430,8 @@ SQLITE_PRIVATE void sqlite3Fts3SimpleTokenizerModule( ** ** input = ** -** The virtual table module tokenizes this , using the FTS3 -** tokenizer specified by the arguments to the CREATE VIRTUAL TABLE +** The virtual table module tokenizes this , using the FTS3 +** tokenizer specified by the arguments to the CREATE VIRTUAL TABLE ** statement and returns one row for each token in the result. With ** fields set as follows: ** @@ -161998,7 +192500,7 @@ static int fts3tokQueryTokenizer( /* ** The second argument, argv[], is an array of pointers to nul-terminated -** strings. This function makes a copy of the array and strings into a +** strings. This function makes a copy of the array and strings into a ** single block of memory. It then dequotes any of the strings that appear ** to be quoted. ** @@ -162025,7 +192527,7 @@ static int fts3tokDequoteArray( nByte += (int)(strlen(argv[i]) + 1); } - *pazDequote = azDequote = sqlite3_malloc(sizeof(char *)*argc + nByte); + *pazDequote = azDequote = sqlite3_malloc64(sizeof(char *)*argc + nByte); if( azDequote==0 ){ rc = SQLITE_NOMEM; }else{ @@ -162054,7 +192556,7 @@ static int fts3tokDequoteArray( ** and xCreate are identical operations. ** ** argv[0]: module name -** argv[1]: database name +** argv[1]: database name ** argv[2]: table name ** argv[3]: first argument (tokenizer name) */ @@ -162091,7 +192593,8 @@ static int fts3tokConnectMethod( assert( (rc==SQLITE_OK)==(pMod!=0) ); if( rc==SQLITE_OK ){ - const char * const *azArg = (const char * const *)&azDequote[1]; + const char * const *azArg = 0; + if( nDequote>1 ) azArg = (const char * const *)&azDequote[1]; rc = pMod->xCreate((nDequote>1 ? nDequote-1 : 0), azArg, &pTok); } @@ -162134,16 +192637,16 @@ static int fts3tokDisconnectMethod(sqlite3_vtab *pVtab){ ** xBestIndex - Analyze a WHERE and ORDER BY clause. */ static int fts3tokBestIndexMethod( - sqlite3_vtab *pVTab, + sqlite3_vtab *pVTab, sqlite3_index_info *pInfo ){ int i; UNUSED_PARAMETER(pVTab); for(i=0; inConstraint; i++){ - if( pInfo->aConstraint[i].usable - && pInfo->aConstraint[i].iColumn==0 - && pInfo->aConstraint[i].op==SQLITE_INDEX_CONSTRAINT_EQ + if( pInfo->aConstraint[i].usable + && pInfo->aConstraint[i].iColumn==0 + && pInfo->aConstraint[i].op==SQLITE_INDEX_CONSTRAINT_EQ ){ pInfo->idxNum = 1; pInfo->aConstraintUsage[i].argvIndex = 1; @@ -162249,11 +192752,11 @@ static int fts3tokFilterMethod( if( idxNum==1 ){ const char *zByte = (const char *)sqlite3_value_text(apVal[0]); int nByte = sqlite3_value_bytes(apVal[0]); - pCsr->zInput = sqlite3_malloc(nByte+1); + pCsr->zInput = sqlite3_malloc64(nByte+1); if( pCsr->zInput==0 ){ rc = SQLITE_NOMEM; }else{ - memcpy(pCsr->zInput, zByte, nByte); + if( nByte>0 ) memcpy(pCsr->zInput, zByte, nByte); pCsr->zInput[nByte] = 0; rc = pTab->pMod->xOpen(pTab->pTok, pCsr->zInput, nByte, &pCsr->pCsr); if( rc==SQLITE_OK ){ @@ -162322,7 +192825,7 @@ static int fts3tokRowidMethod( ** Register the fts3tok module with database connection db. Return SQLITE_OK ** if successful or an error code if sqlite3_create_module() fails. */ -SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ +SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash, void(*xDestroy)(void*)){ static const sqlite3_module fts3tok_module = { 0, /* iVersion */ fts3tokConnectMethod, /* xCreate */ @@ -162346,11 +192849,14 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ 0, /* xRename */ 0, /* xSavepoint */ 0, /* xRelease */ - 0 /* xRollbackTo */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ }; int rc; /* Return code */ - rc = sqlite3_create_module(db, "fts3tokenize", &fts3tok_module, (void*)pHash); + rc = sqlite3_create_module_v2( + db, "fts3tokenize", &fts3tok_module, (void*)pHash, xDestroy + ); return rc; } @@ -162373,7 +192879,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ ** This file is part of the SQLite FTS3 extension module. Specifically, ** this file contains code to insert, update and delete rows from FTS3 ** tables. It also contains code to merge FTS3 b-tree segments. Some -** of the sub-routines used to merge segments are also used by the query +** of the sub-routines used to merge segments are also used by the query ** code in fts3.c. */ @@ -162383,13 +192889,13 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ /* #include */ /* #include */ /* #include */ - +/* #include */ #define FTS_MAX_APPENDABLE_HEIGHT 16 /* ** When full-text index nodes are loaded from disk, the buffer that they -** are loaded into has the following number of bytes of padding at the end +** are loaded into has the following number of bytes of padding at the end ** of it. i.e. if a full-text index node is 900 bytes in size, then a buffer ** of 920 bytes is allocated for it. ** @@ -162406,10 +192912,10 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ ** method before retrieving all query results (as may happen, for example, ** if a query has a LIMIT clause). ** -** Incremental loading is used for b-tree nodes FTS3_NODE_CHUNK_THRESHOLD +** Incremental loading is used for b-tree nodes FTS3_NODE_CHUNK_THRESHOLD ** bytes and larger. Nodes are loaded in chunks of FTS3_NODE_CHUNKSIZE bytes. -** The code is written so that the hard lower-limit for each of these values -** is 1. Clearly such small values would be inefficient, but can be useful +** The code is written so that the hard lower-limit for each of these values +** is 1. Clearly such small values would be inefficient, but can be useful ** for testing purposes. ** ** If this module is built with SQLITE_TEST defined, these constants may @@ -162422,12 +192928,12 @@ int test_fts3_node_chunk_threshold = (4*1024)*4; # define FTS3_NODE_CHUNKSIZE test_fts3_node_chunksize # define FTS3_NODE_CHUNK_THRESHOLD test_fts3_node_chunk_threshold #else -# define FTS3_NODE_CHUNKSIZE (4*1024) +# define FTS3_NODE_CHUNKSIZE (4*1024) # define FTS3_NODE_CHUNK_THRESHOLD (FTS3_NODE_CHUNKSIZE*4) #endif /* -** The two values that may be meaningfully bound to the :1 parameter in +** The values that may be meaningfully bound to the :1 parameter in ** statements SQL_REPLACE_STAT and SQL_SELECT_STAT. */ #define FTS_STAT_DOCTOTAL 0 @@ -162436,7 +192942,7 @@ int test_fts3_node_chunk_threshold = (4*1024)*4; /* ** If FTS_LOG_MERGES is defined, call sqlite3_log() to report each automatic -** and incremental merge operation that takes place. This is used for +** and incremental merge operation that takes place. This is used for ** debugging FTS only, it should not usually be turned on in production ** systems. */ @@ -162522,7 +193028,7 @@ struct Fts3SegReader { char *aDoclist; /* Pointer to doclist of current entry */ int nDoclist; /* Size of doclist in current entry */ - /* The following variables are used by fts3SegReaderNextDocid() to iterate + /* The following variables are used by fts3SegReaderNextDocid() to iterate ** through the current doclist (aDoclist/nDoclist). */ char *pOffsetList; @@ -162567,11 +193073,11 @@ struct SegmentWriter { ** fts3NodeFree() ** ** When a b+tree is written to the database (either as a result of a merge -** or the pending-terms table being flushed), leaves are written into the +** or the pending-terms table being flushed), leaves are written into the ** database file as soon as they are completely populated. The interior of ** the tree is assembled in memory and written out only once all leaves have ** been populated and stored. This is Ok, as the b+-tree fanout is usually -** very large, meaning that the interior of the tree consumes relatively +** very large, meaning that the interior of the tree consumes relatively ** little memory. */ struct SegmentNode { @@ -162592,7 +193098,7 @@ struct SegmentNode { */ #define SQL_DELETE_CONTENT 0 #define SQL_IS_EMPTY 1 -#define SQL_DELETE_ALL_CONTENT 2 +#define SQL_DELETE_ALL_CONTENT 2 #define SQL_DELETE_ALL_SEGMENTS 3 #define SQL_DELETE_ALL_SEGDIR 4 #define SQL_DELETE_ALL_DOCSIZE 5 @@ -162640,7 +193146,7 @@ struct SegmentNode { ** Otherwise, an SQLite error code is returned and *pp is set to 0. ** ** If argument apVal is not NULL, then it must point to an array with -** at least as many entries as the requested statement has bound +** at least as many entries as the requested statement has bound ** parameters. The values are bound to the statements parameters before ** returning. */ @@ -162664,7 +193170,7 @@ static int fts3SqlStmt( /* 10 */ "SELECT coalesce((SELECT max(blockid) FROM %Q.'%q_segments') + 1, 1)", /* 11 */ "REPLACE INTO %Q.'%q_segdir' VALUES(?,?,?,?,?,?)", - /* Return segments in order from oldest to newest.*/ + /* Return segments in order from oldest to newest.*/ /* 12 */ "SELECT idx, start_block, leaves_end_block, end_block, root " "FROM %Q.'%q_segdir' WHERE level = ? ORDER BY idx ASC", /* 13 */ "SELECT idx, start_block, leaves_end_block, end_block, root " @@ -162695,13 +193201,15 @@ static int fts3SqlStmt( ** returns zero rows. */ /* 28 */ "SELECT level, count(*) AS cnt FROM %Q.'%q_segdir' " " GROUP BY level HAVING cnt>=?" - " ORDER BY (level %% 1024) ASC LIMIT 1", + " ORDER BY (level %% 1024) ASC, 2 DESC LIMIT 1", /* Estimate the upper limit on the number of leaf nodes in a new segment -** created by merging the oldest :2 segments from absolute level :1. See +** created by merging the oldest :2 segments from absolute level :1. See ** function sqlite3Fts3Incrmerge() for details. */ /* 29 */ "SELECT 2 * total(1 + leaves_end_block - start_block) " - " FROM %Q.'%q_segdir' WHERE level = ? AND idx < ?", + " FROM (SELECT * FROM %Q.'%q_segdir' " + " WHERE level = ? ORDER BY idx ASC LIMIT ?" + " )", /* SQL_DELETE_SEGDIR_ENTRY ** Delete the %_segdir entry on absolute level :1 with index :2. */ @@ -162713,7 +193221,7 @@ static int fts3SqlStmt( /* 31 */ "UPDATE %Q.'%q_segdir' SET idx = ? WHERE level=? AND idx=?", /* SQL_SELECT_SEGDIR -** Read a single entry from the %_segdir table. The entry from absolute +** Read a single entry from the %_segdir table. The entry from absolute ** level :1 with index value :2. */ /* 32 */ "SELECT idx, start_block, leaves_end_block, end_block, root " "FROM %Q.'%q_segdir' WHERE level = ? AND idx = ?", @@ -162737,7 +193245,7 @@ static int fts3SqlStmt( ** Return the largest relative level in the FTS index or indexes. */ /* 36 */ "SELECT max( level %% 1024 ) FROM %Q.'%q_segdir'", - /* Return segments in order from oldest to newest.*/ + /* Return segments in order from oldest to newest.*/ /* 37 */ "SELECT level, idx, end_block " "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ? " "ORDER BY level DESC, idx ASC", @@ -162753,13 +193261,15 @@ static int fts3SqlStmt( assert( SizeofArray(azSql)==SizeofArray(p->aStmt) ); assert( eStmt=0 ); - + pStmt = p->aStmt[eStmt]; if( !pStmt ){ + int f = SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_NO_VTAB; char *zSql; if( eStmt==SQL_CONTENT_INSERT ){ zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, p->zWriteExprlist); }else if( eStmt==SQL_SELECT_CONTENT_BY_ROWID ){ + f &= ~SQLITE_PREPARE_NO_VTAB; zSql = sqlite3_mprintf(azSql[eStmt], p->zReadExprlist); }else{ zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName); @@ -162767,8 +193277,7 @@ static int fts3SqlStmt( if( !zSql ){ rc = SQLITE_NOMEM; }else{ - rc = sqlite3_prepare_v3(p->db, zSql, -1, SQLITE_PREPARE_PERSISTENT, - &pStmt, NULL); + rc = sqlite3_prepare_v3(p->db, zSql, -1, f, &pStmt, NULL); sqlite3_free(zSql); assert( rc==SQLITE_OK || pStmt==0 ); p->aStmt[eStmt] = pStmt; @@ -162857,7 +193366,7 @@ static void fts3SqlExec( sqlite3_stmt *pStmt; int rc; if( *pRC ) return; - rc = fts3SqlStmt(p, eStmt, &pStmt, apVal); + rc = fts3SqlStmt(p, eStmt, &pStmt, apVal); if( rc==SQLITE_OK ){ sqlite3_step(pStmt); rc = sqlite3_reset(pStmt); @@ -162867,22 +193376,22 @@ static void fts3SqlExec( /* -** This function ensures that the caller has obtained an exclusive -** shared-cache table-lock on the %_segdir table. This is required before +** This function ensures that the caller has obtained an exclusive +** shared-cache table-lock on the %_segdir table. This is required before ** writing data to the fts3 table. If this lock is not acquired first, then ** the caller may end up attempting to take this lock as part of committing -** a transaction, causing SQLite to return SQLITE_LOCKED or +** a transaction, causing SQLite to return SQLITE_LOCKED or ** LOCKED_SHAREDCACHEto a COMMIT command. ** -** It is best to avoid this because if FTS3 returns any error when -** committing a transaction, the whole transaction will be rolled back. -** And this is not what users expect when they get SQLITE_LOCKED_SHAREDCACHE. -** It can still happen if the user locks the underlying tables directly +** It is best to avoid this because if FTS3 returns any error when +** committing a transaction, the whole transaction will be rolled back. +** And this is not what users expect when they get SQLITE_LOCKED_SHAREDCACHE. +** It can still happen if the user locks the underlying tables directly ** instead of accessing them via FTS. */ static int fts3Writelock(Fts3Table *p){ int rc = SQLITE_OK; - + if( p->nPendingData==0 ){ sqlite3_stmt *pStmt; rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_LEVEL, &pStmt, 0); @@ -162899,7 +193408,7 @@ static int fts3Writelock(Fts3Table *p){ /* ** FTS maintains a separate indexes for each language-id (a 32-bit integer). ** Within each language id, a separate index is maintained to store the -** document terms, and each configured prefix size (configured the FTS +** document terms, and each configured prefix size (configured the FTS ** "prefix=" option). And each index consists of multiple levels ("relative ** levels"). ** @@ -162909,14 +193418,14 @@ static int fts3Writelock(Fts3Table *p){ ** separate component values into the single 64-bit integer value that ** can be used to query the %_segdir table. ** -** Specifically, each language-id/index combination is allocated 1024 +** Specifically, each language-id/index combination is allocated 1024 ** 64-bit integer level values ("absolute levels"). The main terms index ** for language-id 0 is allocate values 0-1023. The first prefix index ** (if any) for language-id 0 is allocated values 1024-2047. And so on. ** Language 1 indexes are allocated immediately following language 0. ** ** So, for a system with nPrefix prefix indexes configured, the block of -** absolute levels that corresponds to language-id iLangid and index +** absolute levels that corresponds to language-id iLangid and index ** iIndex starts at absolute level ((iLangid * (nPrefix+1) + iIndex) * 1024). */ static sqlite3_int64 getAbsoluteLevel( @@ -162926,7 +193435,7 @@ static sqlite3_int64 getAbsoluteLevel( int iLevel /* Level of segments */ ){ sqlite3_int64 iBase; /* First absolute level for iLangid/iIndex */ - assert( iLangid>=0 ); + assert_fts3_nc( iLangid>=0 ); assert( p->nIndex>0 ); assert( iIndex>=0 && iIndexnIndex ); @@ -162937,7 +193446,7 @@ static sqlite3_int64 getAbsoluteLevel( /* ** Set *ppStmt to a statement handle that may be used to iterate through ** all rows in the %_segdir table, from oldest to newest. If successful, -** return SQLITE_OK. If an error occurs while preparing the statement, +** return SQLITE_OK. If an error occurs while preparing the statement, ** return an SQLite error code. ** ** There is only ever one instance of this SQL statement compiled for @@ -162968,16 +193477,16 @@ SQLITE_PRIVATE int sqlite3Fts3AllSegdirs( if( iLevel<0 ){ /* "SELECT * FROM %_segdir WHERE level BETWEEN ? AND ? ORDER BY ..." */ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE, &pStmt, 0); - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK ){ sqlite3_bind_int64(pStmt, 1, getAbsoluteLevel(p, iLangid, iIndex, 0)); - sqlite3_bind_int64(pStmt, 2, + sqlite3_bind_int64(pStmt, 2, getAbsoluteLevel(p, iLangid, iIndex, FTS3_SEGDIR_MAXLEVEL-1) ); } }else{ /* "SELECT * FROM %_segdir WHERE level = ? ORDER BY ..." */ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL, &pStmt, 0); - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK ){ sqlite3_bind_int64(pStmt, 1, getAbsoluteLevel(p, iLangid, iIndex,iLevel)); } } @@ -163006,7 +193515,7 @@ static int fts3PendingListAppendVarint( /* Allocate or grow the PendingList as required. */ if( !p ){ - p = sqlite3_malloc(sizeof(*p) + 100); + p = sqlite3_malloc64(sizeof(*p) + 100); if( !p ){ return SQLITE_NOMEM; } @@ -163015,14 +193524,14 @@ static int fts3PendingListAppendVarint( p->nData = 0; } else if( p->nData+FTS3_VARINT_MAX+1>p->nSpace ){ - int nNew = p->nSpace * 2; - p = sqlite3_realloc(p, sizeof(*p) + nNew); + i64 nNew = p->nSpace * 2; + p = sqlite3_realloc64(p, sizeof(*p) + nNew); if( !p ){ sqlite3_free(*pp); *pp = 0; return SQLITE_NOMEM; } - p->nSpace = nNew; + p->nSpace = (int)nNew; p->aData = (char *)&p[1]; } @@ -163055,7 +193564,7 @@ static int fts3PendingListAppend( assert( !p || p->iLastDocid<=iDocid ); if( !p || p->iLastDocid!=iDocid ){ - sqlite3_int64 iDelta = iDocid - (p ? p->iLastDocid : 0); + u64 iDelta = (u64)iDocid - (u64)(p ? p->iLastDocid : 0); if( p ){ assert( p->nDatanSpace ); assert( p->aData[p->nData]==0 ); @@ -163121,7 +193630,7 @@ static int fts3PendingTermsAddOne( } if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){ if( pList==fts3HashInsert(pHash, zToken, nToken, pList) ){ - /* Malloc failed while inserting the new entry. This can only + /* Malloc failed while inserting the new entry. This can only ** happen if there was no previous entry for this token. */ assert( 0==fts3HashFind(pHash, zToken, nToken) ); @@ -163167,7 +193676,7 @@ static int fts3PendingTermsAdd( assert( pTokenizer && pModule ); /* If the user has inserted a NULL value, this function may be called with - ** zText==0. In this case, add zero token entries to the hash table and + ** zText==0. In this case, add zero token entries to the hash table and ** return early. */ if( zText==0 ){ *pnWord = 0; @@ -163198,8 +193707,8 @@ static int fts3PendingTermsAdd( rc = fts3PendingTermsAddOne( p, iCol, iPos, &p->aIndex[0].hPending, zToken, nToken ); - - /* Add the term to each of the prefix indexes that it is not too + + /* Add the term to each of the prefix indexes that it is not too ** short for. */ for(i=1; rc==SQLITE_OK && inIndex; i++){ struct Fts3Index *pIndex = &p->aIndex[i]; @@ -163215,8 +193724,8 @@ static int fts3PendingTermsAdd( return (rc==SQLITE_DONE ? SQLITE_OK : rc); } -/* -** Calling this function indicates that subsequent calls to +/* +** Calling this function indicates that subsequent calls to ** fts3PendingTermsAdd() are to add term/position-list pairs for the ** contents of the document with docid iDocid. */ @@ -163235,10 +193744,10 @@ static int fts3PendingTermsDocid( ** buffer was half empty, that would let the less frequent terms ** generate longer doclists. */ - if( iDocidiPrevDocid + if( iDocidiPrevDocid || (iDocid==p->iPrevDocid && p->bPrevDelete==0) || p->iPrevLangid!=iLangid - || p->nPendingData>p->nMaxPendingData + || p->nPendingData>p->nMaxPendingData ){ int rc = sqlite3Fts3PendingTermsFlush(p); if( rc!=SQLITE_OK ) return rc; @@ -163250,7 +193759,7 @@ static int fts3PendingTermsDocid( } /* -** Discard the contents of the pending-terms hash tables. +** Discard the contents of the pending-terms hash tables. */ SQLITE_PRIVATE void sqlite3Fts3PendingTermsClear(Fts3Table *p){ int i; @@ -163275,9 +193784,9 @@ SQLITE_PRIVATE void sqlite3Fts3PendingTermsClear(Fts3Table *p){ ** fts3InsertData(). Parameter iDocid is the docid of the new row. */ static int fts3InsertTerms( - Fts3Table *p, - int iLangid, - sqlite3_value **apVal, + Fts3Table *p, + int iLangid, + sqlite3_value **apVal, u32 *aSz ){ int i; /* Iterator variable */ @@ -163340,7 +193849,7 @@ static int fts3InsertData( rc = fts3SqlStmt(p, SQL_CONTENT_INSERT, &pContentInsert, &apVal[1]); if( rc==SQLITE_OK && p->zLanguageid ){ rc = sqlite3_bind_int( - pContentInsert, p->nColumn+2, + pContentInsert, p->nColumn+2, sqlite3_value_int(apVal[p->nColumn+4]) ); } @@ -163367,8 +193876,8 @@ static int fts3InsertData( if( rc!=SQLITE_OK ) return rc; } - /* Execute the statement to insert the record. Set *piDocid to the - ** new docid value. + /* Execute the statement to insert the record. Set *piDocid to the + ** new docid value. */ sqlite3_step(pContentInsert); rc = sqlite3_reset(pContentInsert); @@ -163418,7 +193927,7 @@ static int langidFromSelect(Fts3Table *p, sqlite3_stmt *pSelect){ ** (an integer) of a row about to be deleted. Remove all terms from the ** full-text index. */ -static void fts3DeleteTerms( +static void fts3DeleteTerms( int *pRC, /* Result code */ Fts3Table *p, /* The FTS table to delete from */ sqlite3_value *pRowid, /* The docid to be deleted */ @@ -163465,7 +193974,7 @@ static void fts3DeleteTerms( */ static int fts3SegmentMerge(Fts3Table *, int, int, int); -/* +/* ** This function allocates a new level iLevel index in the segdir table. ** Usually, indexes are allocated within a level sequentially starting ** with 0, so the allocated index is one greater than the value returned @@ -163474,17 +193983,17 @@ static int fts3SegmentMerge(Fts3Table *, int, int, int); ** SELECT max(idx) FROM %_segdir WHERE level = :iLevel ** ** However, if there are already FTS3_MERGE_COUNT indexes at the requested -** level, they are merged into a single level (iLevel+1) segment and the +** level, they are merged into a single level (iLevel+1) segment and the ** allocated index is 0. ** ** If successful, *piIdx is set to the allocated index slot and SQLITE_OK ** returned. Otherwise, an SQLite error code is returned. */ static int fts3AllocateSegdirIdx( - Fts3Table *p, + Fts3Table *p, int iLangid, /* Language id */ int iIndex, /* Index for p->aIndex */ - int iLevel, + int iLevel, int *piIdx ){ int rc; /* Return Code */ @@ -163512,7 +194021,7 @@ static int fts3AllocateSegdirIdx( ** segment and allocate (newly freed) index 0 at level iLevel. Otherwise, ** if iNext is less than FTS3_MERGE_COUNT, allocate index iNext. */ - if( iNext>=FTS3_MERGE_COUNT ){ + if( iNext>=MergeCount(p) ){ fts3LogMerge(16, getAbsoluteLevel(p, iLangid, iIndex, iLevel)); rc = fts3SegmentMerge(p, iLangid, iIndex, iLevel); *piIdx = 0; @@ -163532,7 +194041,7 @@ static int fts3AllocateSegdirIdx( ** This function reads data from a single row of the %_segments table. The ** specific row is identified by the iBlockid parameter. If paBlob is not ** NULL, then a buffer is allocated using sqlite3_malloc() and populated -** with the contents of the blob stored in the "block" column of the +** with the contents of the blob stored in the "block" column of the ** identified table row is. Whether or not paBlob is NULL, *pnBlob is set ** to the size of the blob in bytes before returning. ** @@ -163579,7 +194088,7 @@ SQLITE_PRIVATE int sqlite3Fts3ReadBlock( int nByte = sqlite3_blob_bytes(p->pSegments); *pnBlob = nByte; if( paBlob ){ - char *aByte = sqlite3_malloc(nByte + FTS3_NODE_PADDING); + char *aByte = sqlite3_malloc64((i64)nByte + FTS3_NODE_PADDING); if( !aByte ){ rc = SQLITE_NOMEM; }else{ @@ -163596,6 +194105,8 @@ SQLITE_PRIVATE int sqlite3Fts3ReadBlock( } *paBlob = aByte; } + }else if( rc==SQLITE_ERROR ){ + rc = FTS_CORRUPT_VTAB; } return rc; @@ -163609,14 +194120,14 @@ SQLITE_PRIVATE void sqlite3Fts3SegmentsClose(Fts3Table *p){ sqlite3_blob_close(p->pSegments); p->pSegments = 0; } - + static int fts3SegReaderIncrRead(Fts3SegReader *pReader){ int nRead; /* Number of bytes to read */ int rc; /* Return code */ nRead = MIN(pReader->nNode - pReader->nPopulate, FTS3_NODE_CHUNKSIZE); rc = sqlite3_blob_read( - pReader->pBlob, + pReader->pBlob, &pReader->aNode[pReader->nPopulate], nRead, pReader->nPopulate @@ -163636,10 +194147,10 @@ static int fts3SegReaderIncrRead(Fts3SegReader *pReader){ static int fts3SegReaderRequire(Fts3SegReader *pReader, char *pFrom, int nByte){ int rc = SQLITE_OK; - assert( !pReader->pBlob + assert( !pReader->pBlob || (pFrom>=pReader->aNode && pFrom<&pReader->aNode[pReader->nNode]) ); - while( pReader->pBlob && rc==SQLITE_OK + while( pReader->pBlob && rc==SQLITE_OK && (pFrom - pReader->aNode + nByte)>pReader->nPopulate ){ rc = fts3SegReaderIncrRead(pReader); @@ -163665,7 +194176,7 @@ static void fts3SegReaderSetEof(Fts3SegReader *pSeg){ ** SQLITE_DONE. Otherwise, an SQLite error code. */ static int fts3SegReaderNext( - Fts3Table *p, + Fts3Table *p, Fts3SegReader *pReader, int bIncr ){ @@ -163690,9 +194201,19 @@ static int fts3SegReaderNext( char *aCopy; PendingList *pList = (PendingList *)fts3HashData(pElem); int nCopy = pList->nData+1; - pReader->zTerm = (char *)fts3HashKey(pElem); - pReader->nTerm = fts3HashKeysize(pElem); - aCopy = (char*)sqlite3_malloc(nCopy); + + int nTerm = fts3HashKeysize(pElem); + if( (nTerm+1)>pReader->nTermAlloc ){ + sqlite3_free(pReader->zTerm); + pReader->zTerm = (char*)sqlite3_malloc64(((i64)nTerm+1)*2); + if( !pReader->zTerm ) return SQLITE_NOMEM; + pReader->nTermAlloc = (nTerm+1)*2; + } + memcpy(pReader->zTerm, fts3HashKey(pElem), nTerm); + pReader->zTerm[nTerm] = '\0'; + pReader->nTerm = nTerm; + + aCopy = (char*)sqlite3_malloc64(nCopy); if( !aCopy ) return SQLITE_NOMEM; memcpy(aCopy, pList->aData, nCopy); pReader->nNode = pReader->nDoclist = nCopy; @@ -163705,15 +194226,17 @@ static int fts3SegReaderNext( fts3SegReaderSetEof(pReader); - /* If iCurrentBlock>=iLeafEndBlock, this is an EOF condition. All leaf + /* If iCurrentBlock>=iLeafEndBlock, this is an EOF condition. All leaf ** blocks have already been traversed. */ - assert( pReader->iCurrentBlock<=pReader->iLeafEndBlock ); +#ifdef CORRUPT_DB + assert( pReader->iCurrentBlock<=pReader->iLeafEndBlock || CORRUPT_DB ); +#endif if( pReader->iCurrentBlock>=pReader->iLeafEndBlock ){ return SQLITE_OK; } rc = sqlite3Fts3ReadBlock( - p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode, + p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode, (bIncr ? &pReader->nPopulate : 0) ); if( rc!=SQLITE_OK ) return rc; @@ -163729,20 +194252,24 @@ static int fts3SegReaderNext( rc = fts3SegReaderRequire(pReader, pNext, FTS3_VARINT_MAX*2); if( rc!=SQLITE_OK ) return rc; - - /* Because of the FTS3_NODE_PADDING bytes of padding, the following is + + /* Because of the FTS3_NODE_PADDING bytes of padding, the following is ** safe (no risk of overread) even if the node data is corrupted. */ pNext += fts3GetVarint32(pNext, &nPrefix); pNext += fts3GetVarint32(pNext, &nSuffix); - if( nPrefix<0 || nSuffix<=0 - || &pNext[nSuffix]>&pReader->aNode[pReader->nNode] + if( nSuffix<=0 + || (&pReader->aNode[pReader->nNode] - pNext)pReader->nTerm ){ return FTS_CORRUPT_VTAB; } - if( nPrefix+nSuffix>pReader->nTermAlloc ){ - int nNew = (nPrefix+nSuffix)*2; - char *zNew = sqlite3_realloc(pReader->zTerm, nNew); + /* Both nPrefix and nSuffix were read by fts3GetVarint32() and so are + ** between 0 and 0x7FFFFFFF. But the sum of the two may cause integer + ** overflow - hence the (i64) casts. */ + if( (i64)nPrefix+nSuffix>(i64)pReader->nTermAlloc ){ + i64 nNew = ((i64)nPrefix+nSuffix)*2; + char *zNew = sqlite3_realloc64(pReader->zTerm, nNew); if( !zNew ){ return SQLITE_NOMEM; } @@ -163761,11 +194288,12 @@ static int fts3SegReaderNext( pReader->pOffsetList = 0; /* Check that the doclist does not appear to extend past the end of the - ** b-tree node. And that the final byte of the doclist is 0x00. If either + ** b-tree node. And that the final byte of the doclist is 0x00. If either ** of these statements is untrue, then the data structure is corrupt. */ - if( &pReader->aDoclist[pReader->nDoclist]>&pReader->aNode[pReader->nNode] + if( pReader->nDoclist > pReader->nNode-(pReader->aDoclist-pReader->aNode) || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1]) + || pReader->nDoclist==0 ){ return FTS_CORRUPT_VTAB; } @@ -163785,7 +194313,7 @@ static int fts3SegReaderFirstDocid(Fts3Table *pTab, Fts3SegReader *pReader){ pReader->iDocid = 0; pReader->nOffsetList = 0; sqlite3Fts3DoclistPrev(0, - pReader->aDoclist, pReader->nDoclist, &pReader->pOffsetList, + pReader->aDoclist, pReader->nDoclist, &pReader->pOffsetList, &pReader->iDocid, &pReader->nOffsetList, &bEof ); }else{ @@ -163801,8 +194329,8 @@ static int fts3SegReaderFirstDocid(Fts3Table *pTab, Fts3SegReader *pReader){ /* ** Advance the SegReader to point to the next docid in the doclist ** associated with the current term. -** -** If arguments ppOffsetList and pnOffsetList are not NULL, then +** +** If arguments ppOffsetList and pnOffsetList are not NULL, then ** *ppOffsetList is set to point to the first column-offset list ** in the doclist entry (i.e. immediately past the docid varint). ** *pnOffsetList is set to the length of the set of column-offset @@ -163845,22 +194373,22 @@ static int fts3SegReaderNextDocid( ** following block advances it to point one byte past the end of ** the same offset list. */ while( 1 ){ - + /* The following line of code (and the "p++" below the while() loop) is - ** normally all that is required to move pointer p to the desired + ** normally all that is required to move pointer p to the desired ** position. The exception is if this node is being loaded from disk ** incrementally and pointer "p" now points to the first byte past ** the populated part of pReader->aNode[]. */ while( *p | c ) c = *p++ & 0x80; assert( *p==0 ); - + if( pReader->pBlob==0 || p<&pReader->aNode[pReader->nPopulate] ) break; rc = fts3SegReaderIncrRead(pReader); if( rc!=SQLITE_OK ) return rc; } p++; - + /* If required, populate the output variables with a pointer to and the ** size of the previous offset-list. */ @@ -163871,7 +194399,7 @@ static int fts3SegReaderNextDocid( /* List may have been edited in place by fts3EvalNearTrim() */ while( ppOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta); + u64 iDelta; + pReader->pOffsetList = p + sqlite3Fts3GetVarintU(p, &iDelta); if( pTab->bDescIdx ){ - pReader->iDocid -= iDelta; + pReader->iDocid = (i64)((u64)pReader->iDocid - iDelta); }else{ - pReader->iDocid += iDelta; + pReader->iDocid = (i64)((u64)pReader->iDocid + iDelta); } } } } - return SQLITE_OK; + return rc; } SQLITE_PRIVATE int sqlite3Fts3MsrOvfl( - Fts3Cursor *pCsr, + Fts3Cursor *pCsr, Fts3MultiSegReader *pMsr, int *pnOvfl ){ @@ -163913,8 +194441,8 @@ SQLITE_PRIVATE int sqlite3Fts3MsrOvfl( for(ii=0; rc==SQLITE_OK && iinSegment; ii++){ Fts3SegReader *pReader = pMsr->apSegment[ii]; - if( !fts3SegReaderIsPending(pReader) - && !fts3SegReaderIsRootOnly(pReader) + if( !fts3SegReaderIsPending(pReader) + && !fts3SegReaderIsRootOnly(pReader) ){ sqlite3_int64 jj; for(jj=pReader->iStartBlock; jj<=pReader->iLeafEndBlock; jj++){ @@ -163932,14 +194460,12 @@ SQLITE_PRIVATE int sqlite3Fts3MsrOvfl( } /* -** Free all allocations associated with the iterator passed as the +** Free all allocations associated with the iterator passed as the ** second argument. */ SQLITE_PRIVATE void sqlite3Fts3SegReaderFree(Fts3SegReader *pReader){ if( pReader ){ - if( !fts3SegReaderIsPending(pReader) ){ - sqlite3_free(pReader->zTerm); - } + sqlite3_free(pReader->zTerm); if( !fts3SegReaderIsRootOnly(pReader) ){ sqlite3_free(pReader->aNode); } @@ -163964,12 +194490,17 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderNew( Fts3SegReader *pReader; /* Newly allocated SegReader object */ int nExtra = 0; /* Bytes to allocate segment root node */ - assert( iStartLeaf<=iEndLeaf ); + assert( zRoot!=0 || nRoot==0 ); +#ifdef CORRUPT_DB + assert( zRoot!=0 || CORRUPT_DB ); +#endif + if( iStartLeaf==0 ){ + if( iEndLeaf!=0 ) return FTS_CORRUPT_VTAB; nExtra = nRoot + FTS3_NODE_PADDING; } - pReader = (Fts3SegReader *)sqlite3_malloc(sizeof(Fts3SegReader) + nExtra); + pReader = (Fts3SegReader *)sqlite3_malloc64(sizeof(Fts3SegReader) + nExtra); if( !pReader ){ return SQLITE_NOMEM; } @@ -163985,7 +194516,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderNew( pReader->aNode = (char *)&pReader[1]; pReader->rootOnly = 1; pReader->nNode = nRoot; - memcpy(pReader->aNode, zRoot, nRoot); + if( nRoot ) memcpy(pReader->aNode, zRoot, nRoot); memset(&pReader->aNode[nRoot], 0, FTS3_NODE_PADDING); }else{ pReader->iCurrentBlock = iStartLeaf-1; @@ -164061,7 +194592,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderPending( if( nElem==nAlloc ){ Fts3HashElem **aElem2; nAlloc += 16; - aElem2 = (Fts3HashElem **)sqlite3_realloc( + aElem2 = (Fts3HashElem **)sqlite3_realloc64( aElem, nAlloc*sizeof(Fts3HashElem *) ); if( !aElem2 ){ @@ -164086,7 +194617,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderPending( }else{ /* The query is a simple term lookup that matches at most one term in - ** the index. All that is required is a straight hash-lookup. + ** the index. All that is required is a straight hash-lookup. ** ** Because the stack address of pE may be accessed via the aElem pointer ** below, the "Fts3HashElem *pE" must be declared so that it is valid @@ -164100,8 +194631,9 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderPending( } if( nElem>0 ){ - int nByte = sizeof(Fts3SegReader) + (nElem+1)*sizeof(Fts3HashElem *); - pReader = (Fts3SegReader *)sqlite3_malloc(nByte); + sqlite3_int64 nByte; + nByte = sizeof(Fts3SegReader) + (nElem+1)*sizeof(Fts3HashElem *); + pReader = (Fts3SegReader *)sqlite3_malloc64(nByte); if( !pReader ){ rc = SQLITE_NOMEM; }else{ @@ -164120,7 +194652,7 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderPending( } /* -** Compare the entries pointed to by two Fts3SegReader structures. +** Compare the entries pointed to by two Fts3SegReader structures. ** Comparison is as follows: ** ** 1) EOF is greater than not EOF. @@ -164149,7 +194681,7 @@ static int fts3SegReaderCmp(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ if( rc==0 ){ rc = pRhs->iIdx - pLhs->iIdx; } - assert( rc!=0 ); + assert_fts3_nc( rc!=0 ); return rc; } @@ -164191,7 +194723,7 @@ static int fts3SegReaderDoclistCmpRev(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ /* ** Compare the term that the Fts3SegReader object passed as the first argument -** points to with the term specified by arguments zTerm and nTerm. +** points to with the term specified by arguments zTerm and nTerm. ** ** If the pSeg iterator is already at EOF, return 0. Otherwise, return ** -ve if the pSeg term is less than zTerm/nTerm, 0 if the two terms are @@ -164252,7 +194784,7 @@ static void fts3SegReaderSort( #endif } -/* +/* ** Insert a record into the %_segments table. */ static int fts3WriteSegment( @@ -164294,7 +194826,7 @@ SQLITE_PRIVATE int sqlite3Fts3MaxLevel(Fts3Table *p, int *pnMax){ return rc; } -/* +/* ** Insert a record into the %_segdir table. */ static int fts3WriteSegdir( @@ -164332,7 +194864,7 @@ static int fts3WriteSegdir( /* ** Return the size of the common prefix (if any) shared by zPrev and -** zNext, in bytes. For example, +** zNext, in bytes. For example, ** ** fts3PrefixCompress("abc", 3, "abcdef", 6) // returns 3 ** fts3PrefixCompress("abX", 3, "abcdef", 6) // returns 2 @@ -164345,8 +194877,8 @@ static int fts3PrefixCompress( int nNext /* Size of buffer zNext in bytes */ ){ int n; - UNUSED_PARAMETER(nNext); - for(n=0; nzTerm, pTree->nTerm, zTerm, nTerm); nSuffix = nTerm-nPrefix; + /* If nSuffix is zero or less, then zTerm/nTerm must be a prefix of + ** pWriter->zTerm/pWriter->nTerm. i.e. must be equal to or less than when + ** compared with BINARY collation. This indicates corruption. */ + if( nSuffix<=0 ) return FTS_CORRUPT_VTAB; + nReq += sqlite3Fts3VarintLen(nPrefix)+sqlite3Fts3VarintLen(nSuffix)+nSuffix; if( nReq<=p->nNodeSize || !pTree->zTerm ){ @@ -164385,11 +194922,11 @@ static int fts3NodeAddTerm( ** and the static node buffer (p->nNodeSize bytes) is not large ** enough. Use a separately malloced buffer instead This wastes ** p->nNodeSize bytes, but since this scenario only comes about when - ** the database contain two terms that share a prefix of almost 2KB, - ** this is not expected to be a serious problem. + ** the database contain two terms that share a prefix of almost 2KB, + ** this is not expected to be a serious problem. */ assert( pTree->aData==(char *)&pTree[1] ); - pTree->aData = (char *)sqlite3_malloc(nReq); + pTree->aData = (char *)sqlite3_malloc64(nReq); if( !pTree->aData ){ return SQLITE_NOMEM; } @@ -164407,7 +194944,7 @@ static int fts3NodeAddTerm( if( isCopyTerm ){ if( pTree->nMalloczMalloc, nTerm*2); + char *zNew = sqlite3_realloc64(pTree->zMalloc, (i64)nTerm*2); if( !zNew ){ return SQLITE_NOMEM; } @@ -164430,10 +194967,10 @@ static int fts3NodeAddTerm( ** If this is the first node in the tree, the term is added to it. ** ** Otherwise, the term is not added to the new node, it is left empty for - ** now. Instead, the term is inserted into the parent of pTree. If pTree + ** now. Instead, the term is inserted into the parent of pTree. If pTree ** has no parent, one is created here. */ - pNew = (SegmentNode *)sqlite3_malloc(sizeof(SegmentNode) + p->nNodeSize); + pNew = (SegmentNode *)sqlite3_malloc64(sizeof(SegmentNode) + p->nNodeSize); if( !pNew ){ return SQLITE_NOMEM; } @@ -164455,7 +194992,7 @@ static int fts3NodeAddTerm( pTree->zMalloc = 0; }else{ pNew->pLeftmost = pNew; - rc = fts3NodeAddTerm(p, &pNew, isCopyTerm, zTerm, nTerm); + rc = fts3NodeAddTerm(p, &pNew, isCopyTerm, zTerm, nTerm); } *ppTree = pNew; @@ -164466,8 +195003,8 @@ static int fts3NodeAddTerm( ** Helper function for fts3NodeWrite(). */ static int fts3TreeFinishNode( - SegmentNode *pTree, - int iHeight, + SegmentNode *pTree, + int iHeight, sqlite3_int64 iLeftChild ){ int nStart; @@ -164480,15 +195017,15 @@ static int fts3TreeFinishNode( /* ** Write the buffer for the segment node pTree and all of its peers to the -** database. Then call this function recursively to write the parent of -** pTree and its peers to the database. +** database. Then call this function recursively to write the parent of +** pTree and its peers to the database. ** ** Except, if pTree is a root node, do not write it to the database. Instead, ** set output variables *paRoot and *pnRoot to contain the root node. ** ** If successful, SQLITE_OK is returned and output variable *piLast is ** set to the largest blockid written to the database (or zero if no -** blocks were written to the db). Otherwise, an SQLite error code is +** blocks were written to the db). Otherwise, an SQLite error code is ** returned. */ static int fts3NodeWrite( @@ -164516,7 +195053,7 @@ static int fts3NodeWrite( for(pIter=pTree->pLeftmost; pIter && rc==SQLITE_OK; pIter=pIter->pRight){ int nStart = fts3TreeFinishNode(pIter, iHeight, iNextLeaf); int nWrite = pIter->nData - nStart; - + rc = fts3WriteSegment(p, iNextFree, &pIter->aData[nStart], nWrite); iNextFree++; iNextLeaf += (pIter->nEntry+1); @@ -164562,7 +195099,7 @@ static void fts3NodeFree(SegmentNode *pTree){ */ static int fts3SegWriterAdd( Fts3Table *p, /* Virtual table handle */ - SegmentWriter **ppWriter, /* IN/OUT: SegmentWriter handle */ + SegmentWriter **ppWriter, /* IN/OUT: SegmentWriter handle */ int isCopyTerm, /* True if buffer zTerm must be copied */ const char *zTerm, /* Pointer to buffer containing term */ int nTerm, /* Size of term in bytes */ @@ -164571,7 +195108,7 @@ static int fts3SegWriterAdd( ){ int nPrefix; /* Size of term prefix in bytes */ int nSuffix; /* Size of term suffix in bytes */ - int nReq; /* Number of bytes required on leaf page */ + i64 nReq; /* Number of bytes required on leaf page */ int nData; SegmentWriter *pWriter = *ppWriter; @@ -164580,13 +195117,13 @@ static int fts3SegWriterAdd( sqlite3_stmt *pStmt; /* Allocate the SegmentWriter structure */ - pWriter = (SegmentWriter *)sqlite3_malloc(sizeof(SegmentWriter)); + pWriter = (SegmentWriter *)sqlite3_malloc64(sizeof(SegmentWriter)); if( !pWriter ) return SQLITE_NOMEM; memset(pWriter, 0, sizeof(SegmentWriter)); *ppWriter = pWriter; /* Allocate a buffer in which to accumulate data */ - pWriter->aData = (char *)sqlite3_malloc(p->nNodeSize); + pWriter->aData = (char *)sqlite3_malloc64(p->nNodeSize); if( !pWriter->aData ) return SQLITE_NOMEM; pWriter->nSize = p->nNodeSize; @@ -164605,6 +195142,11 @@ static int fts3SegWriterAdd( nPrefix = fts3PrefixCompress(pWriter->zTerm, pWriter->nTerm, zTerm, nTerm); nSuffix = nTerm-nPrefix; + /* If nSuffix is zero or less, then zTerm/nTerm must be a prefix of + ** pWriter->zTerm/pWriter->nTerm. i.e. must be equal to or less than when + ** compared with BINARY collation. This indicates corruption. */ + if( nSuffix<=0 ) return FTS_CORRUPT_VTAB; + /* Figure out how many bytes are required by this new entry */ nReq = sqlite3Fts3VarintLen(nPrefix) + /* varint containing prefix size */ sqlite3Fts3VarintLen(nSuffix) + /* varint containing suffix size */ @@ -164616,6 +195158,7 @@ static int fts3SegWriterAdd( int rc; /* The current leaf node is full. Write it out to the database. */ + if( pWriter->iFree==LARGEST_INT64 ) return FTS_CORRUPT_VTAB; rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, nData); if( rc!=SQLITE_OK ) return rc; p->nLeafAdd++; @@ -164655,7 +195198,7 @@ static int fts3SegWriterAdd( ** the buffer to make it large enough. */ if( nReq>pWriter->nSize ){ - char *aNew = sqlite3_realloc(pWriter->aData, nReq); + char *aNew = sqlite3_realloc64(pWriter->aData, nReq); if( !aNew ) return SQLITE_NOMEM; pWriter->aData = aNew; pWriter->nSize = nReq; @@ -164665,9 +195208,11 @@ static int fts3SegWriterAdd( /* Append the prefix-compressed term and doclist to the buffer. */ nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nPrefix); nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nSuffix); + assert( nSuffix>0 ); memcpy(&pWriter->aData[nData], &zTerm[nPrefix], nSuffix); nData += nSuffix; nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nDoclist); + assert( nDoclist>0 ); memcpy(&pWriter->aData[nData], aDoclist, nDoclist); pWriter->nData = nData + nDoclist; @@ -164678,7 +195223,7 @@ static int fts3SegWriterAdd( */ if( isCopyTerm ){ if( nTerm>pWriter->nMalloc ){ - char *zNew = sqlite3_realloc(pWriter->zMalloc, nTerm*2); + char *zNew = sqlite3_realloc64(pWriter->zMalloc, (i64)nTerm*2); if( !zNew ){ return SQLITE_NOMEM; } @@ -164687,6 +195232,7 @@ static int fts3SegWriterAdd( pWriter->zTerm = zNew; } assert( pWriter->zTerm==pWriter->zMalloc ); + assert( nTerm>0 ); memcpy(pWriter->zTerm, zTerm, nTerm); }else{ pWriter->zTerm = (char *)zTerm; @@ -164722,12 +195268,12 @@ static int fts3SegWriterFlush( pWriter->iFirst, pWriter->iFree, &iLast, &zRoot, &nRoot); } if( rc==SQLITE_OK ){ - rc = fts3WriteSegdir(p, iLevel, iIdx, + rc = fts3WriteSegdir(p, iLevel, iIdx, pWriter->iFirst, iLastLeaf, iLast, pWriter->nLeafData, zRoot, nRoot); } }else{ /* The entire tree fits on the root node. Write it to the segdir table. */ - rc = fts3WriteSegdir(p, iLevel, iIdx, + rc = fts3WriteSegdir(p, iLevel, iIdx, 0, 0, 0, pWriter->nLeafData, pWriter->aData, pWriter->nData); } p->nLeafAdd++; @@ -164735,7 +195281,7 @@ static int fts3SegWriterFlush( } /* -** Release all memory held by the SegmentWriter object passed as the +** Release all memory held by the SegmentWriter object passed as the ** first argument. */ static void fts3SegWriterFree(SegmentWriter *pWriter){ @@ -164785,9 +195331,9 @@ static int fts3IsEmpty(Fts3Table *p, sqlite3_value *pRowid, int *pisEmpty){ ** Return SQLITE_OK if successful, or an SQLite error code if not. */ static int fts3SegmentMaxLevel( - Fts3Table *p, + Fts3Table *p, int iLangid, - int iIndex, + int iIndex, sqlite3_int64 *pnMax ){ sqlite3_stmt *pStmt; @@ -164803,7 +195349,7 @@ static int fts3SegmentMaxLevel( rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0); if( rc!=SQLITE_OK ) return rc; sqlite3_bind_int64(pStmt, 1, getAbsoluteLevel(p, iLangid, iIndex, 0)); - sqlite3_bind_int64(pStmt, 2, + sqlite3_bind_int64(pStmt, 2, getAbsoluteLevel(p, iLangid, iIndex, FTS3_SEGDIR_MAXLEVEL-1) ); if( SQLITE_ROW==sqlite3_step(pStmt) ){ @@ -164832,8 +195378,8 @@ static int fts3SegmentIsMaxLevel(Fts3Table *p, i64 iAbsLevel, int *pbMax){ int rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0); if( rc!=SQLITE_OK ) return rc; sqlite3_bind_int64(pStmt, 1, iAbsLevel+1); - sqlite3_bind_int64(pStmt, 2, - ((iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL + sqlite3_bind_int64(pStmt, 2, + (((u64)iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL ); *pbMax = 0; @@ -164870,9 +195416,9 @@ static int fts3DeleteSegment( ** This function is used after merging multiple segments into a single large ** segment to delete the old, now redundant, segment b-trees. Specifically, ** it: -** -** 1) Deletes all %_segments entries for the segments associated with -** each of the SegReader objects in the array passed as the third +** +** 1) Deletes all %_segments entries for the segments associated with +** each of the SegReader objects in the array passed as the third ** argument, and ** ** 2) deletes all %_segdir entries with level iLevel, or all %_segdir @@ -164904,7 +195450,7 @@ static int fts3DeleteSegdir( rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_RANGE, &pDelete, 0); if( rc==SQLITE_OK ){ sqlite3_bind_int64(pDelete, 1, getAbsoluteLevel(p, iLangid, iIndex, 0)); - sqlite3_bind_int64(pDelete, 2, + sqlite3_bind_int64(pDelete, 2, getAbsoluteLevel(p, iLangid, iIndex, FTS3_SEGDIR_MAXLEVEL-1) ); } @@ -164926,7 +195472,7 @@ static int fts3DeleteSegdir( } /* -** When this function is called, buffer *ppList (size *pnList bytes) contains +** When this function is called, buffer *ppList (size *pnList bytes) contains ** a position list that may (or may not) feature multiple columns. This ** function adjusts the pointer *ppList and the length *pnList so that they ** identify the subset of the position list that corresponds to column iCol. @@ -164953,7 +195499,7 @@ static void fts3ColumnFilter( while( 1 ){ char c = 0; while( p0){ memset(&pList[nList], 0, pEnd - &pList[nList]); } *ppList = pList; @@ -164985,17 +195531,20 @@ static void fts3ColumnFilter( static int fts3MsrBufferData( Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */ char *pList, - int nList + i64 nList ){ - if( nList>pMsr->nBuffer ){ + if( (nList+FTS3_NODE_PADDING)>pMsr->nBuffer ){ char *pNew; - pMsr->nBuffer = nList*2; - pNew = (char *)sqlite3_realloc(pMsr->aBuffer, pMsr->nBuffer); + int nNew = nList*2 + FTS3_NODE_PADDING; + pNew = (char *)sqlite3_realloc64(pMsr->aBuffer, nNew); if( !pNew ) return SQLITE_NOMEM; pMsr->aBuffer = pNew; + pMsr->nBuffer = nNew; } + assert( nList>0 ); memcpy(pMsr->aBuffer, pList, nList); + memset(&pMsr->aBuffer[nList], 0, FTS3_NODE_PADDING); return SQLITE_OK; } @@ -165033,7 +195582,7 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext( rc = fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList); j = 1; - while( rc==SQLITE_OK + while( rc==SQLITE_OK && jpOffsetList && apSegment[j]->iDocid==iDocid @@ -165045,7 +195594,7 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext( fts3SegReaderSort(pMsr->apSegment, nMerge, j, xCmp); if( nList>0 && fts3SegReaderIsPending(apSegment[0]) ){ - rc = fts3MsrBufferData(pMsr, pList, nList+1); + rc = fts3MsrBufferData(pMsr, pList, (i64)nList+1); if( rc!=SQLITE_OK ) return rc; assert( (pMsr->aBuffer[nList] & 0xFE)==0x00 ); pList = pMsr->aBuffer; @@ -165076,7 +195625,7 @@ static int fts3SegReaderStart( int i; int nSeg = pCsr->nSegment; - /* If the Fts3SegFilter defines a specific term (or term prefix) to search + /* If the Fts3SegFilter defines a specific term (or term prefix) to search ** for, then advance each segment iterator until it points to a term of ** equal or greater value than the specified term. This prevents many ** unnecessary merge/sort operations for the case where single segment @@ -165160,7 +195709,7 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart( ** sqlite3Fts3SegReaderStart() ** sqlite3Fts3SegReaderStep() ** -** then the entire doclist for the term is available in +** then the entire doclist for the term is available in ** MultiSegReader.aDoclist/nDoclist. */ SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){ @@ -165182,6 +195731,19 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){ return SQLITE_OK; } +static int fts3GrowSegReaderBuffer(Fts3MultiSegReader *pCsr, i64 nReq){ + if( nReq>pCsr->nBuffer ){ + char *aNew; + pCsr->nBuffer = nReq*2; + aNew = sqlite3_realloc64(pCsr->aBuffer, pCsr->nBuffer); + if( !aNew ){ + return SQLITE_NOMEM; + } + pCsr->aBuffer = aNew; + } + return SQLITE_OK; +} + SQLITE_PRIVATE int sqlite3Fts3SegReaderStep( Fts3Table *p, /* Virtual table handle */ @@ -165208,9 +195770,9 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep( do { int nMerge; int i; - + /* Advance the first pCsr->nAdvance entries in the apSegment[] array - ** forward. Then sort the list in order of current term again. + ** forward. Then sort the list in order of current term again. */ for(i=0; inAdvance; i++){ Fts3SegReader *pSeg = apSegment[i]; @@ -165232,39 +195794,40 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep( pCsr->zTerm = apSegment[0]->zTerm; /* If this is a prefix-search, and if the term that apSegment[0] points - ** to does not share a suffix with pFilter->zTerm/nTerm, then all + ** to does not share a suffix with pFilter->zTerm/nTerm, then all ** required callbacks have been made. In this case exit early. ** ** Similarly, if this is a search for an exact match, and the first term ** of segment apSegment[0] is not a match, exit early. */ if( pFilter->zTerm && !isScan ){ - if( pCsr->nTermnTerm + if( pCsr->nTermnTerm || (!isPrefix && pCsr->nTerm>pFilter->nTerm) - || memcmp(pCsr->zTerm, pFilter->zTerm, pFilter->nTerm) + || memcmp(pCsr->zTerm, pFilter->zTerm, pFilter->nTerm) ){ break; } } nMerge = 1; - while( nMergeaNode - && apSegment[nMerge]->nTerm==pCsr->nTerm + && apSegment[nMerge]->nTerm==pCsr->nTerm && 0==memcmp(pCsr->zTerm, apSegment[nMerge]->zTerm, pCsr->nTerm) ){ nMerge++; } assert( isIgnoreEmpty || (isRequirePos && !isColFilter) ); - if( nMerge==1 - && !isIgnoreEmpty - && !isFirst + if( nMerge==1 + && !isIgnoreEmpty + && !isFirst && (p->bDescIdx==0 || fts3SegReaderIsPending(apSegment[0])==0) ){ pCsr->nDoclist = apSegment[0]->nDoclist; if( fts3SegReaderIsPending(apSegment[0]) ){ - rc = fts3MsrBufferData(pCsr, apSegment[0]->aDoclist, pCsr->nDoclist); + rc = fts3MsrBufferData(pCsr, apSegment[0]->aDoclist, + (i64)pCsr->nDoclist); pCsr->aDoclist = pCsr->aBuffer; }else{ pCsr->aDoclist = apSegment[0]->aDoclist; @@ -165304,32 +195867,27 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep( if( !isIgnoreEmpty || nList>0 ){ - /* Calculate the 'docid' delta value to write into the merged + /* Calculate the 'docid' delta value to write into the merged ** doclist. */ sqlite3_int64 iDelta; if( p->bDescIdx && nDoclist>0 ){ - iDelta = iPrev - iDocid; + if( iPrev<=iDocid ) return FTS_CORRUPT_VTAB; + iDelta = (i64)((u64)iPrev - (u64)iDocid); }else{ - iDelta = iDocid - iPrev; + if( nDoclist>0 && iPrev>=iDocid ) return FTS_CORRUPT_VTAB; + iDelta = (i64)((u64)iDocid - (u64)iPrev); } - assert( iDelta>0 || (nDoclist==0 && iDelta==iDocid) ); - assert( nDoclist>0 || iDelta==iDocid ); nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0); - if( nDoclist+nByte>pCsr->nBuffer ){ - char *aNew; - pCsr->nBuffer = (nDoclist+nByte)*2; - aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer); - if( !aNew ){ - return SQLITE_NOMEM; - } - pCsr->aBuffer = aNew; - } + + rc = fts3GrowSegReaderBuffer(pCsr, + (i64)nByte+nDoclist+FTS3_NODE_PADDING); + if( rc ) return rc; if( isFirst ){ char *a = &pCsr->aBuffer[nDoclist]; int nWrite; - + nWrite = sqlite3Fts3FirstFilter(iDelta, pList, nList, a); if( nWrite ){ iPrev = iDocid; @@ -165349,6 +195907,9 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep( fts3SegReaderSort(apSegment, nMerge, j, xCmp); } if( nDoclist>0 ){ + rc = fts3GrowSegReaderBuffer(pCsr, (i64)nDoclist+FTS3_NODE_PADDING); + if( rc ) return rc; + memset(&pCsr->aBuffer[nDoclist], 0, FTS3_NODE_PADDING); pCsr->aDoclist = pCsr->aBuffer; pCsr->nDoclist = nDoclist; rc = SQLITE_ROW; @@ -165379,18 +195940,18 @@ SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish( } /* -** Decode the "end_block" field, selected by column iCol of the SELECT -** statement passed as the first argument. +** Decode the "end_block" field, selected by column iCol of the SELECT +** statement passed as the first argument. ** ** The "end_block" field may contain either an integer, or a text field -** containing the text representation of two non-negative integers separated -** by one or more space (0x20) characters. In the first case, set *piEndBlock -** to the integer value and *pnByte to zero before returning. In the second, +** containing the text representation of two non-negative integers separated +** by one or more space (0x20) characters. In the first case, set *piEndBlock +** to the integer value and *pnByte to zero before returning. In the second, ** set *piEndBlock to the first value and *pnByte to the second. */ static void fts3ReadEndBlockField( - sqlite3_stmt *pStmt, - int iCol, + sqlite3_stmt *pStmt, + int iCol, i64 *piEndBlock, i64 *pnByte ){ @@ -165398,11 +195959,11 @@ static void fts3ReadEndBlockField( if( zText ){ int i; int iMul = 1; - i64 iVal = 0; + u64 iVal = 0; for(i=0; zText[i]>='0' && zText[i]<='9'; i++){ iVal = iVal*10 + (zText[i] - '0'); } - *piEndBlock = iVal; + *piEndBlock = (i64)iVal; while( zText[i]==' ' ) i++; iVal = 0; if( zText[i]=='-' ){ @@ -165412,7 +195973,7 @@ static void fts3ReadEndBlockField( for(/* no-op */; zText[i]>='0' && zText[i]<='9'; i++){ iVal = iVal*10 + (zText[i] - '0'); } - *pnByte = (iVal * (i64)iMul); + *pnByte = ((i64)iVal * (i64)iMul); } } @@ -165436,10 +195997,10 @@ static int fts3PromoteSegments( i64 iLast = (iAbsLevel/FTS3_SEGDIR_MAXLEVEL + 1) * FTS3_SEGDIR_MAXLEVEL - 1; i64 nLimit = (nByte*3)/2; - /* Loop through all entries in the %_segdir table corresponding to + /* Loop through all entries in the %_segdir table corresponding to ** segments in this index on levels greater than iAbsLevel. If there is - ** at least one such segment, and it is possible to determine that all - ** such segments are smaller than nLimit bytes in size, they will be + ** at least one such segment, and it is possible to determine that all + ** such segments are smaller than nLimit bytes in size, they will be ** promoted to level iAbsLevel. */ sqlite3_bind_int64(pRange, 1, iAbsLevel+1); sqlite3_bind_int64(pRange, 2, iLast); @@ -165447,7 +196008,7 @@ static int fts3PromoteSegments( i64 nSize = 0, dummy; fts3ReadEndBlockField(pRange, 2, &dummy, &nSize); if( nSize<=0 || nSize>nLimit ){ - /* If nSize==0, then the %_segdir.end_block field does not not + /* If nSize==0, then the %_segdir.end_block field does not not ** contain a size value. This happens if it was written by an ** old version of FTS. In this case it is not possible to determine ** the size of the segment, and so segment promotion does not @@ -165513,18 +196074,18 @@ static int fts3PromoteSegments( } /* -** Merge all level iLevel segments in the database into a single +** Merge all level iLevel segments in the database into a single ** iLevel+1 segment. Or, if iLevel<0, merge all segments into a -** single segment with a level equal to the numerically largest level +** single segment with a level equal to the numerically largest level ** currently present in the database. ** ** If this function is called with iLevel<0, but there is only one -** segment in the database, SQLITE_DONE is returned immediately. -** Otherwise, if successful, SQLITE_OK is returned. If an error occurs, +** segment in the database, SQLITE_DONE is returned immediately. +** Otherwise, if successful, SQLITE_OK is returned. If an error occurs, ** an SQLite error code is returned. */ static int fts3SegmentMerge( - Fts3Table *p, + Fts3Table *p, int iLangid, /* Language id to merge */ int iIndex, /* Index in p->aIndex[] to merge */ int iLevel /* Level to merge */ @@ -165568,7 +196129,7 @@ static int fts3SegmentMerge( }else{ /* This call is to merge all segments at level iLevel. find the next ** available segment index at level iLevel+1. The call to - ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to + ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to ** a single iLevel+2 segment if necessary. */ assert( FTS3_SEGCURSOR_PENDING==-1 ); iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, iLevel+1); @@ -165578,8 +196139,10 @@ static int fts3SegmentMerge( if( rc!=SQLITE_OK ) goto finished; assert( csr.nSegment>0 ); - assert( iNewLevel>=getAbsoluteLevel(p, iLangid, iIndex, 0) ); - assert( iNewLevel=getAbsoluteLevel(p, iLangid, iIndex, 0) ); + assert_fts3_nc( + iNewLevelnIndex; i++){ rc = fts3SegmentMerge(p, p->iPrevLangid, i, FTS3_SEGCURSOR_PENDING); if( rc==SQLITE_DONE ) rc = SQLITE_OK; @@ -165678,14 +196241,16 @@ static void fts3DecodeIntArray( const char *zBuf, /* The BLOB containing the varints */ int nBuf /* size of the BLOB */ ){ - int i, j; - UNUSED_PARAMETER(nBuf); - for(i=j=0; inColumn ); + pBlob = sqlite3_malloc64( 10*(sqlite3_int64)p->nColumn ); if( pBlob==0 ){ *pRC = SQLITE_NOMEM; return; @@ -165725,7 +196290,7 @@ static void fts3InsertDocsize( /* ** Record 0 of the %_stat table contains a blob consisting of N varints, ** where N is the number of user defined columns in the fts3 table plus -** two. If nCol is the number of user defined columns, then values of the +** two. If nCol is the number of user defined columns, then values of the ** varints are set as follows: ** ** Varint 0: Total number of rows in the table. @@ -165754,7 +196319,7 @@ static void fts3UpdateDocTotals( const int nStat = p->nColumn+2; if( *pRC ) return; - a = sqlite3_malloc( (sizeof(u32)+10)*nStat ); + a = sqlite3_malloc64( (sizeof(u32)+10)*(sqlite3_int64)nStat ); if( a==0 ){ *pRC = SQLITE_NOMEM; return; @@ -165810,7 +196375,7 @@ static void fts3UpdateDocTotals( } /* -** Merge the entire database so that there is one segment for each +** Merge the entire database so that there is one segment for each ** iIndex/iLangid combination. */ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ @@ -165818,7 +196383,10 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ int rc; sqlite3_stmt *pAllLangid = 0; - rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0); + rc = sqlite3Fts3PendingTermsFlush(p); + if( rc==SQLITE_OK ){ + rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0); + } if( rc==SQLITE_OK ){ int rc2; sqlite3_bind_int(pAllLangid, 1, p->iPrevLangid); @@ -165839,7 +196407,6 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ } sqlite3Fts3SegmentsClose(p); - sqlite3Fts3PendingTermsClear(p); return (rc==SQLITE_OK && bReturnDone && bSeenDone) ? SQLITE_DONE : rc; } @@ -165849,7 +196416,7 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ ** ** INSERT INTO () VALUES('rebuild'); ** -** The entire FTS index is discarded and rebuilt. If the table is one +** The entire FTS index is discarded and rebuilt. If the table is one ** created using the content=xxx option, then the new index is based on ** the current contents of the xxx table. Otherwise, it is rebuilt based ** on the contents of the %_content table. @@ -165875,8 +196442,8 @@ static int fts3DoRebuild(Fts3Table *p){ } if( rc==SQLITE_OK ){ - int nByte = sizeof(u32) * (p->nColumn+1)*3; - aSz = (u32 *)sqlite3_malloc(nByte); + sqlite3_int64 nByte = sizeof(u32) * ((sqlite3_int64)p->nColumn+1)*3; + aSz = (u32 *)sqlite3_malloc64(nByte); if( aSz==0 ){ rc = SQLITE_NOMEM; }else{ @@ -165929,9 +196496,9 @@ static int fts3DoRebuild(Fts3Table *p){ /* -** This function opens a cursor used to read the input data for an +** This function opens a cursor used to read the input data for an ** incremental merge operation. Specifically, it opens a cursor to scan -** the oldest nSeg segments (idx=0 through idx=(nSeg-1)) in absolute +** the oldest nSeg segments (idx=0 through idx=(nSeg-1)) in absolute ** level iAbsLevel. */ static int fts3IncrmergeCsr( @@ -165941,13 +196508,13 @@ static int fts3IncrmergeCsr( Fts3MultiSegReader *pCsr /* Cursor object to populate */ ){ int rc; /* Return Code */ - sqlite3_stmt *pStmt = 0; /* Statement used to read %_segdir entry */ - int nByte; /* Bytes allocated at pCsr->apSegment[] */ + sqlite3_stmt *pStmt = 0; /* Statement used to read %_segdir entry */ + sqlite3_int64 nByte; /* Bytes allocated at pCsr->apSegment[] */ /* Allocate space for the Fts3MultiSegReader.aCsr[] array */ memset(pCsr, 0, sizeof(*pCsr)); nByte = sizeof(Fts3SegReader *) * nSeg; - pCsr->apSegment = (Fts3SegReader **)sqlite3_malloc(nByte); + pCsr->apSegment = (Fts3SegReader **)sqlite3_malloc64(nByte); if( pCsr->apSegment==0 ){ rc = SQLITE_NOMEM; @@ -165996,7 +196563,7 @@ struct Blob { }; /* -** This structure is used to build up buffers containing segment b-tree +** This structure is used to build up buffers containing segment b-tree ** nodes (blocks). */ struct NodeWriter { @@ -166053,7 +196620,7 @@ struct NodeReader { static void blobGrowBuffer(Blob *pBlob, int nMin, int *pRc){ if( *pRc==SQLITE_OK && nMin>pBlob->nAlloc ){ int nAlloc = nMin; - char *a = (char *)sqlite3_realloc(pBlob->a, nAlloc); + char *a = (char *)sqlite3_realloc64(pBlob->a, nAlloc); if( a ){ pBlob->nAlloc = nAlloc; pBlob->a = a; @@ -166065,12 +196632,12 @@ static void blobGrowBuffer(Blob *pBlob, int nMin, int *pRc){ /* ** Attempt to advance the node-reader object passed as the first argument to -** the next entry on the node. +** the next entry on the node. ** -** Return an error code if an error occurs (SQLITE_NOMEM is possible). +** Return an error code if an error occurs (SQLITE_NOMEM is possible). ** Otherwise return SQLITE_OK. If there is no next entry on the node ** (e.g. because the current entry is the last) set NodeReader->aNode to -** NULL to indicate EOF. Otherwise, populate the NodeReader structure output +** NULL to indicate EOF. Otherwise, populate the NodeReader structure output ** variables for the new entry. */ static int nodeReaderNext(NodeReader *p){ @@ -166090,21 +196657,26 @@ static int nodeReaderNext(NodeReader *p){ } p->iOff += fts3GetVarint32(&p->aNode[p->iOff], &nSuffix); + if( nPrefix>p->term.n || nSuffix>p->nNode-p->iOff || nSuffix==0 ){ + return FTS_CORRUPT_VTAB; + } blobGrowBuffer(&p->term, nPrefix+nSuffix, &rc); - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK && ALWAYS(p->term.a!=0) ){ memcpy(&p->term.a[nPrefix], &p->aNode[p->iOff], nSuffix); p->term.n = nPrefix+nSuffix; p->iOff += nSuffix; if( p->iChild==0 ){ p->iOff += fts3GetVarint32(&p->aNode[p->iOff], &p->nDoclist); + if( (p->nNode-p->iOff)nDoclist ){ + return FTS_CORRUPT_VTAB; + } p->aDoclist = &p->aNode[p->iOff]; p->iOff += p->nDoclist; } } } - assert( p->iOff<=p->nNode ); - + assert_fts3_nc( p->iOff<=p->nNode ); return rc; } @@ -166118,7 +196690,7 @@ static void nodeReaderRelease(NodeReader *p){ /* ** Initialize a node-reader object to read the node in buffer aNode/nNode. ** -** If successful, SQLITE_OK is returned and the NodeReader object set to +** If successful, SQLITE_OK is returned and the NodeReader object set to ** point to the first entry on the node (if any). Otherwise, an SQLite ** error code is returned. */ @@ -166128,14 +196700,14 @@ static int nodeReaderInit(NodeReader *p, const char *aNode, int nNode){ p->nNode = nNode; /* Figure out if this is a leaf or an internal node. */ - if( p->aNode[0] ){ + if( aNode && aNode[0] ){ /* An internal node. */ p->iOff = 1 + sqlite3Fts3GetVarint(&p->aNode[1], &p->iChild); }else{ p->iOff = 1; } - return nodeReaderNext(p); + return aNode ? nodeReaderNext(p) : SQLITE_OK; } /* @@ -166167,17 +196739,18 @@ static int fts3IncrmergePush( int nSpace; /* Figure out how much space the key will consume if it is written to - ** the current node of layer iLayer. Due to the prefix compression, + ** the current node of layer iLayer. Due to the prefix compression, ** the space required changes depending on which node the key is to ** be added to. */ nPrefix = fts3PrefixCompress(pNode->key.a, pNode->key.n, zTerm, nTerm); nSuffix = nTerm - nPrefix; + if(nSuffix<=0 ) return FTS_CORRUPT_VTAB; nSpace = sqlite3Fts3VarintLen(nPrefix); nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix; - if( pNode->key.n==0 || (pNode->block.n + nSpace)<=p->nNodeSize ){ + if( pNode->key.n==0 || (pNode->block.n + nSpace)<=p->nNodeSize ){ /* If the current node of layer iLayer contains zero keys, or if adding - ** the key to it will not cause it to grow to larger than nNodeSize + ** the key to it will not cause it to grow to larger than nNodeSize ** bytes in size, write the key here. */ Blob *pBlk = &pNode->block; @@ -166196,6 +196769,8 @@ static int fts3IncrmergePush( pBlk->n += sqlite3Fts3PutVarint(&pBlk->a[pBlk->n], nPrefix); } pBlk->n += sqlite3Fts3PutVarint(&pBlk->a[pBlk->n], nSuffix); + assert( nPrefix+nSuffix<=nTerm ); + assert( nPrefix>=0 ); memcpy(&pBlk->a[pBlk->n], &zTerm[nPrefix], nSuffix); pBlk->n += nSuffix; @@ -166233,12 +196808,12 @@ static int fts3IncrmergePush( ** A node header is a single 0x00 byte for a leaf node, or a height varint ** followed by the left-hand-child varint for an internal node. ** -** The term to be appended is passed via arguments zTerm/nTerm. For a +** The term to be appended is passed via arguments zTerm/nTerm. For a ** leaf node, the doclist is passed as aDoclist/nDoclist. For an internal ** node, both aDoclist and nDoclist must be passed 0. ** ** If the size of the value in blob pPrev is zero, then this is the first -** term written to the node. Otherwise, pPrev contains a copy of the +** term written to the node. Otherwise, pPrev contains a copy of the ** previous term. Before this function returns, it is updated to contain a ** copy of zTerm/nTerm. ** @@ -166255,7 +196830,7 @@ static int fts3AppendToNode( const char *zTerm, /* New term to write */ int nTerm, /* Size of zTerm in bytes */ const char *aDoclist, /* Doclist (or NULL) to write */ - int nDoclist /* Size of aDoclist in bytes */ + int nDoclist /* Size of aDoclist in bytes */ ){ int rc = SQLITE_OK; /* Return code */ int bFirst = (pPrev->n==0); /* True if this is the first term written */ @@ -166265,13 +196840,14 @@ static int fts3AppendToNode( /* Node must have already been started. There must be a doclist for a ** leaf node, and there must not be a doclist for an internal node. */ assert( pNode->n>0 ); - assert( (pNode->a[0]=='\0')==(aDoclist!=0) ); + assert_fts3_nc( (pNode->a[0]=='\0')==(aDoclist!=0) ); blobGrowBuffer(pPrev, nTerm, &rc); if( rc!=SQLITE_OK ) return rc; nPrefix = fts3PrefixCompress(pPrev->a, pPrev->n, zTerm, nTerm); nSuffix = nTerm - nPrefix; + if( nSuffix<=0 ) return FTS_CORRUPT_VTAB; memcpy(pPrev->a, zTerm, nTerm); pPrev->n = nTerm; @@ -166317,6 +196893,7 @@ static int fts3IncrmergeAppend( pLeaf = &pWriter->aNodeWriter[0]; nPrefix = fts3PrefixCompress(pLeaf->key.a, pLeaf->key.n, zTerm, nTerm); nSuffix = nTerm - nPrefix; + if(nSuffix<=0 ) return FTS_CORRUPT_VTAB; nSpace = sqlite3Fts3VarintLen(nPrefix); nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix; @@ -166329,7 +196906,7 @@ static int fts3IncrmergeAppend( rc = fts3WriteSegment(p, pLeaf->iBlock, pLeaf->block.a, pLeaf->block.n); pWriter->nWork++; - /* Add the current term to the parent node. The term added to the + /* Add the current term to the parent node. The term added to the ** parent must: ** ** a) be greater than the largest term on the leaf node just written @@ -166394,7 +196971,7 @@ static void fts3IncrmergeRelease( NodeWriter *pRoot; /* NodeWriter for root node */ int rc = *pRc; /* Error code */ - /* Set iRoot to the index in pWriter->aNodeWriter[] of the output segment + /* Set iRoot to the index in pWriter->aNodeWriter[] of the output segment ** root node. If the segment fits entirely on a single leaf node, iRoot ** will be set to 0. If the root node is the parent of the leaves, iRoot ** will be 1. And so on. */ @@ -166412,17 +196989,17 @@ static void fts3IncrmergeRelease( /* The entire output segment fits on a single node. Normally, this means ** the node would be stored as a blob in the "root" column of the %_segdir - ** table. However, this is not permitted in this case. The problem is that - ** space has already been reserved in the %_segments table, and so the - ** start_block and end_block fields of the %_segdir table must be populated. - ** And, by design or by accident, released versions of FTS cannot handle + ** table. However, this is not permitted in this case. The problem is that + ** space has already been reserved in the %_segments table, and so the + ** start_block and end_block fields of the %_segdir table must be populated. + ** And, by design or by accident, released versions of FTS cannot handle ** segments that fit entirely on the root node with start_block!=0. ** - ** Instead, create a synthetic root node that contains nothing but a + ** Instead, create a synthetic root node that contains nothing but a ** pointer to the single content node. So that the segment consists of a ** single leaf and a single interior (root) node. ** - ** Todo: Better might be to defer allocating space in the %_segments + ** Todo: Better might be to defer allocating space in the %_segments ** table until we are sure it is needed. */ if( iRoot==0 ){ @@ -166450,7 +197027,7 @@ static void fts3IncrmergeRelease( /* Write the %_segdir record. */ if( rc==SQLITE_OK ){ - rc = fts3WriteSegdir(p, + rc = fts3WriteSegdir(p, pWriter->iAbsLevel+1, /* level */ pWriter->iIdx, /* idx */ pWriter->iStart, /* start_block */ @@ -166481,7 +197058,11 @@ static int fts3TermCmp( int nCmp = MIN(nLhs, nRhs); int res; - res = memcmp(zLhs, zRhs, nCmp); + if( nCmp && ALWAYS(zLhs) && ALWAYS(zRhs) ){ + res = memcmp(zLhs, zRhs, nCmp); + }else{ + res = 0; + } if( res==0 ) res = nLhs - nRhs; return res; @@ -166489,11 +197070,11 @@ static int fts3TermCmp( /* -** Query to see if the entry in the %_segments table with blockid iEnd is +** Query to see if the entry in the %_segments table with blockid iEnd is ** NULL. If no error occurs and the entry is NULL, set *pbRes 1 before -** returning. Otherwise, set *pbRes to 0. +** returning. Otherwise, set *pbRes to 0. ** -** Or, if an error occurs while querying the database, return an SQLite +** Or, if an error occurs while querying the database, return an SQLite ** error code. The final value of *pbRes is undefined in this case. ** ** This is used to test if a segment is an "appendable" segment. If it @@ -166511,14 +197092,14 @@ static int fts3IsAppendable(Fts3Table *p, sqlite3_int64 iEnd, int *pbRes){ if( SQLITE_ROW==sqlite3_step(pCheck) ) bRes = 1; rc = sqlite3_reset(pCheck); } - + *pbRes = bRes; return rc; } /* ** This function is called when initializing an incremental-merge operation. -** It checks if the existing segment with index value iIdx at absolute level +** It checks if the existing segment with index value iIdx at absolute level ** (iAbsLevel+1) can be appended to by the incremental merge. If it can, the ** merge-writer object *pWriter is initialized to write to it. ** @@ -166527,7 +197108,7 @@ static int fts3IsAppendable(Fts3Table *p, sqlite3_int64 iEnd, int *pbRes){ ** * It was initially created as an appendable segment (with all required ** space pre-allocated), and ** -** * The first key read from the input (arguments zKey and nKey) is +** * The first key read from the input (arguments zKey and nKey) is ** greater than the largest key currently stored in the potential ** output segment. */ @@ -166565,6 +197146,10 @@ static int fts3IncrmergeLoad( pWriter->bNoLeafData = (pWriter->nLeafData==0); nRoot = sqlite3_column_bytes(pSelect, 4); aRoot = sqlite3_column_blob(pSelect, 4); + if( aRoot==0 ){ + sqlite3_reset(pSelect); + return nRoot ? SQLITE_NOMEM : FTS_CORRUPT_VTAB; + } }else{ return sqlite3_reset(pSelect); } @@ -166600,6 +197185,10 @@ static int fts3IncrmergeLoad( int i; int nHeight = (int)aRoot[0]; NodeWriter *pNode; + if( nHeight<1 || nHeight>=FTS_MAX_APPENDABLE_HEIGHT ){ + sqlite3_reset(pSelect); + return FTS_CORRUPT_VTAB; + } pWriter->nLeafEst = (int)((iEnd - iStart) + 1)/FTS_MAX_APPENDABLE_HEIGHT; pWriter->iStart = iStart; @@ -166613,34 +197202,46 @@ static int fts3IncrmergeLoad( pNode = &pWriter->aNodeWriter[nHeight]; pNode->iBlock = pWriter->iStart + pWriter->nLeafEst*nHeight; - blobGrowBuffer(&pNode->block, MAX(nRoot, p->nNodeSize), &rc); + blobGrowBuffer(&pNode->block, + MAX(nRoot, p->nNodeSize)+FTS3_NODE_PADDING, &rc + ); if( rc==SQLITE_OK ){ memcpy(pNode->block.a, aRoot, nRoot); pNode->block.n = nRoot; + memset(&pNode->block.a[nRoot], 0, FTS3_NODE_PADDING); } for(i=nHeight; i>=0 && rc==SQLITE_OK; i--){ NodeReader reader; + memset(&reader, 0, sizeof(reader)); pNode = &pWriter->aNodeWriter[i]; - rc = nodeReaderInit(&reader, pNode->block.a, pNode->block.n); - while( reader.aNode && rc==SQLITE_OK ) rc = nodeReaderNext(&reader); - blobGrowBuffer(&pNode->key, reader.term.n, &rc); - if( rc==SQLITE_OK ){ - memcpy(pNode->key.a, reader.term.a, reader.term.n); - pNode->key.n = reader.term.n; - if( i>0 ){ - char *aBlock = 0; - int nBlock = 0; - pNode = &pWriter->aNodeWriter[i-1]; - pNode->iBlock = reader.iChild; - rc = sqlite3Fts3ReadBlock(p, reader.iChild, &aBlock, &nBlock, 0); - blobGrowBuffer(&pNode->block, MAX(nBlock, p->nNodeSize), &rc); - if( rc==SQLITE_OK ){ - memcpy(pNode->block.a, aBlock, nBlock); - pNode->block.n = nBlock; + if( pNode->block.a){ + rc = nodeReaderInit(&reader, pNode->block.a, pNode->block.n); + while( reader.aNode && rc==SQLITE_OK ) rc = nodeReaderNext(&reader); + blobGrowBuffer(&pNode->key, reader.term.n, &rc); + if( rc==SQLITE_OK ){ + assert_fts3_nc( reader.term.n>0 || reader.aNode==0 ); + if( reader.term.n>0 ){ + memcpy(pNode->key.a, reader.term.a, reader.term.n); + } + pNode->key.n = reader.term.n; + if( i>0 ){ + char *aBlock = 0; + int nBlock = 0; + pNode = &pWriter->aNodeWriter[i-1]; + pNode->iBlock = reader.iChild; + rc = sqlite3Fts3ReadBlock(p, reader.iChild, &aBlock, &nBlock,0); + blobGrowBuffer(&pNode->block, + MAX(nBlock, p->nNodeSize)+FTS3_NODE_PADDING, &rc + ); + if( rc==SQLITE_OK ){ + memcpy(pNode->block.a, aBlock, nBlock); + pNode->block.n = nBlock; + memset(&pNode->block.a[nBlock], 0, FTS3_NODE_PADDING); + } + sqlite3_free(aBlock); } - sqlite3_free(aBlock); } } nodeReaderRelease(&reader); @@ -166657,13 +197258,13 @@ static int fts3IncrmergeLoad( /* ** Determine the largest segment index value that exists within absolute ** level iAbsLevel+1. If no error occurs, set *piIdx to this value plus -** one before returning SQLITE_OK. Or, if there are no segments at all +** one before returning SQLITE_OK. Or, if there are no segments at all ** within level iAbsLevel, set *piIdx to zero. ** ** If an error occurs, return an SQLite error code. The final value of ** *piIdx is undefined in this case. */ -static int fts3IncrmergeOutputIdx( +static int fts3IncrmergeOutputIdx( Fts3Table *p, /* FTS Table handle */ sqlite3_int64 iAbsLevel, /* Absolute index of input segments */ int *piIdx /* OUT: Next free index at iAbsLevel+1 */ @@ -166682,7 +197283,7 @@ static int fts3IncrmergeOutputIdx( return rc; } -/* +/* ** Allocate an appendable output segment on absolute level iAbsLevel+1 ** with idx value iIdx. ** @@ -166696,7 +197297,7 @@ static int fts3IncrmergeOutputIdx( ** When an appendable segment is allocated, it is estimated that the ** maximum number of leaf blocks that may be required is the sum of the ** number of leaf blocks consumed by the input segments, plus the number -** of input segments, multiplied by two. This value is stored in stack +** of input segments, multiplied by two. This value is stored in stack ** variable nLeafEst. ** ** A total of 16*nLeafEst blocks are allocated when an appendable segment @@ -166705,10 +197306,10 @@ static int fts3IncrmergeOutputIdx( ** of interior nodes that are parents of the leaf nodes start at block ** (start_block + (1 + end_block - start_block) / 16). And so on. ** -** In the actual code below, the value "16" is replaced with the +** In the actual code below, the value "16" is replaced with the ** pre-processor macro FTS_MAX_APPENDABLE_HEIGHT. */ -static int fts3IncrmergeWriter( +static int fts3IncrmergeWriter( Fts3Table *p, /* Fts3 table handle */ sqlite3_int64 iAbsLevel, /* Absolute level of input segments */ int iIdx, /* Index of new output segment */ @@ -166746,7 +197347,7 @@ static int fts3IncrmergeWriter( if( rc!=SQLITE_OK ) return rc; /* Insert the marker in the %_segments table to make sure nobody tries - ** to steal the space just allocated. This is also used to identify + ** to steal the space just allocated. This is also used to identify ** appendable segments. */ rc = fts3WriteSegment(p, pWriter->iEnd, 0, 0); if( rc!=SQLITE_OK ) return rc; @@ -166763,13 +197364,13 @@ static int fts3IncrmergeWriter( } /* -** Remove an entry from the %_segdir table. This involves running the +** Remove an entry from the %_segdir table. This involves running the ** following two statements: ** ** DELETE FROM %_segdir WHERE level = :iAbsLevel AND idx = :iIdx ** UPDATE %_segdir SET idx = idx - 1 WHERE level = :iAbsLevel AND idx > :iIdx ** -** The DELETE statement removes the specific %_segdir level. The UPDATE +** The DELETE statement removes the specific %_segdir level. The UPDATE ** statement ensures that the remaining segments have contiguously allocated ** idx values. */ @@ -166817,7 +197418,7 @@ static int fts3RepackSegdirLevel( if( nIdx>=nAlloc ){ int *aNew; nAlloc += 16; - aNew = sqlite3_realloc(aIdx, nAlloc*sizeof(int)); + aNew = sqlite3_realloc64(aIdx, nAlloc*sizeof(int)); if( !aNew ){ rc = SQLITE_NOMEM; break; @@ -166883,7 +197484,10 @@ static int fts3TruncateNode( NodeReader reader; /* Reader object */ Blob prev = {0, 0, 0}; /* Previous term written to new node */ int rc = SQLITE_OK; /* Return code */ - int bLeaf = aNode[0]=='\0'; /* True for a leaf node */ + int bLeaf; /* True for a leaf node */ + + if( nNode<1 ) return FTS_CORRUPT_VTAB; + bLeaf = aNode[0]=='\0'; /* Allocate required output space */ blobGrowBuffer(pNew, nNode, &rc); @@ -166891,8 +197495,8 @@ static int fts3TruncateNode( pNew->n = 0; /* Populate new node buffer */ - for(rc = nodeReaderInit(&reader, aNode, nNode); - rc==SQLITE_OK && reader.aNode; + for(rc = nodeReaderInit(&reader, aNode, nNode); + rc==SQLITE_OK && reader.aNode; rc = nodeReaderNext(&reader) ){ if( pNew->n==0 ){ @@ -166919,7 +197523,7 @@ static int fts3TruncateNode( } /* -** Remove all terms smaller than zTerm/nTerm from segment iIdx in absolute +** Remove all terms smaller than zTerm/nTerm from segment iIdx in absolute ** level iAbsLevel. This may involve deleting entries from the %_segments ** table, and modifying existing entries in both the %_segments and %_segdir ** tables. @@ -167043,9 +197647,9 @@ static int fts3IncrmergeChomp( } *pnRem = 0; }else{ - /* The incremental merge did not copy all the data from this + /* The incremental merge did not copy all the data from this ** segment to the upper level. The segment is modified in place - ** so that it contains no keys smaller than zTerm/nTerm. */ + ** so that it contains no keys smaller than zTerm/nTerm. */ const char *zTerm = pSeg->zTerm; int nTerm = pSeg->nTerm; rc = fts3TruncateSegment(p, iAbsLevel, pSeg->iIdx, zTerm, nTerm); @@ -167081,7 +197685,7 @@ static int fts3IncrmergeHintStore(Fts3Table *p, Blob *pHint){ } /* -** Load an incr-merge hint from the database. The incr-merge hint, if one +** Load an incr-merge hint from the database. The incr-merge hint, if one ** exists, is stored in the rowid==1 row of the %_stat table. ** ** If successful, populate blob *pHint with the value read from the %_stat @@ -167103,7 +197707,7 @@ static int fts3IncrmergeHintLoad(Fts3Table *p, Blob *pHint){ if( aHint ){ blobGrowBuffer(pHint, nHint, &rc); if( rc==SQLITE_OK ){ - memcpy(pHint->a, aHint, nHint); + if( ALWAYS(pHint->a!=0) ) memcpy(pHint->a, aHint, nHint); pHint->n = nHint; } } @@ -167118,7 +197722,7 @@ static int fts3IncrmergeHintLoad(Fts3Table *p, Blob *pHint){ /* ** If *pRc is not SQLITE_OK when this function is called, it is a no-op. ** Otherwise, append an entry to the hint stored in blob *pHint. Each entry -** consists of two varints, the absolute level number of the input segments +** consists of two varints, the absolute level number of the input segments ** and the number of input segments. ** ** If successful, leave *pRc set to SQLITE_OK and return. If an error occurs, @@ -167139,7 +197743,7 @@ static void fts3IncrmergeHintPush( /* ** Read the last entry (most recently pushed) from the hint blob *pHint -** and then remove the entry. Write the two values read to *piAbsLevel and +** and then remove the entry. Write the two values read to *piAbsLevel and ** *pnInput before returning. ** ** If no error occurs, return SQLITE_OK. If the hint blob in *pHint does @@ -167149,13 +197753,17 @@ static int fts3IncrmergeHintPop(Blob *pHint, i64 *piAbsLevel, int *pnInput){ const int nHint = pHint->n; int i; - i = pHint->n-2; + i = pHint->n-1; + if( (pHint->a[i] & 0x80) ) return FTS_CORRUPT_VTAB; while( i>0 && (pHint->a[i-1] & 0x80) ) i--; + if( i==0 ) return FTS_CORRUPT_VTAB; + i--; while( i>0 && (pHint->a[i-1] & 0x80) ) i--; pHint->n = i; i += sqlite3Fts3GetVarint(&pHint->a[i], piAbsLevel); i += fts3GetVarint32(&pHint->a[i], pnInput); + assert( i<=nHint ); if( i!=nHint ) return FTS_CORRUPT_VTAB; return SQLITE_OK; @@ -167165,10 +197773,10 @@ static int fts3IncrmergeHintPop(Blob *pHint, i64 *piAbsLevel, int *pnInput){ /* ** Attempt an incremental merge that writes nMerge leaf blocks. ** -** Incremental merges happen nMin segments at a time. The segments -** to be merged are the nMin oldest segments (the ones with the smallest -** values for the _segdir.idx field) in the highest level that contains -** at least nMin segments. Multiple merges might occur in an attempt to +** Incremental merges happen nMin segments at a time. The segments +** to be merged are the nMin oldest segments (the ones with the smallest +** values for the _segdir.idx field) in the highest level that contains +** at least nMin segments. Multiple merges might occur in an attempt to ** write the quota of nMerge leaf blocks. */ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ @@ -167184,7 +197792,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ /* Allocate space for the cursor, filter and writer objects */ const int nAlloc = sizeof(*pCsr) + sizeof(*pFilter) + sizeof(*pWriter); - pWriter = (IncrmergeWriter *)sqlite3_malloc(nAlloc); + pWriter = (IncrmergeWriter *)sqlite3_malloc64(nAlloc); if( !pWriter ) return SQLITE_NOMEM; pFilter = (Fts3SegFilter *)&pWriter[1]; pCsr = (Fts3MultiSegReader *)&pFilter[1]; @@ -167199,7 +197807,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ /* Search the %_segdir table for the absolute level with the smallest ** relative level number that contains at least nMin segments, if any. ** If one is found, set iAbsLevel to the absolute level number and - ** nSeg to nMin. If no level with at least nMin segments can be found, + ** nSeg to nMin. If no level with at least nMin segments can be found, ** set nSeg to -1. */ rc = fts3SqlStmt(p, SQL_FIND_MERGE_LEVEL, &pFindLevel, 0); @@ -167215,7 +197823,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ /* If the hint read from the %_stat table is not empty, check if the ** last entry in it specifies a relative level smaller than or equal - ** to the level identified by the block above (if any). If so, this + ** to the level identified by the block above (if any). If so, this ** iteration of the loop will work on merging at the hinted level. */ if( rc==SQLITE_OK && hint.n ){ @@ -167225,8 +197833,14 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ rc = fts3IncrmergeHintPop(&hint, &iHintAbsLevel, &nHintSeg); if( nSeg<0 || (iAbsLevel % nMod) >= (iHintAbsLevel % nMod) ){ + /* Based on the scan in the block above, it is known that there + ** are no levels with a relative level smaller than that of + ** iAbsLevel with more than nSeg segments, or if nSeg is -1, + ** no levels with more than nMin segments. Use this to limit the + ** value of nHintSeg to avoid a large memory allocation in case the + ** merge-hint is corrupt*/ iAbsLevel = iHintAbsLevel; - nSeg = nHintSeg; + nSeg = MIN(MAX(nMin,nSeg), nHintSeg); bUseHint = 1; bDirtyHint = 1; }else{ @@ -167239,13 +197853,19 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ /* If nSeg is less that zero, then there is no level with at least ** nMin segments and no hint in the %_stat table. No work to do. ** Exit early in this case. */ - if( nSeg<0 ) break; + if( nSeg<=0 ) break; - /* Open a cursor to iterate through the contents of the oldest nSeg - ** indexes of absolute level iAbsLevel. If this cursor is opened using + assert( nMod<=0x7FFFFFFF ); + if( iAbsLevel<0 || iAbsLevel>(nMod<<32) ){ + rc = FTS_CORRUPT_VTAB; + break; + } + + /* Open a cursor to iterate through the contents of the oldest nSeg + ** indexes of absolute level iAbsLevel. If this cursor is opened using ** the 'hint' parameters, it is possible that there are less than nSeg ** segments available in level iAbsLevel. In this case, no work is - ** done on iAbsLevel - fall through to the next iteration of the loop + ** done on iAbsLevel - fall through to the next iteration of the loop ** to start work on some other level. */ memset(pWriter, 0, nAlloc); pFilter->flags = FTS3_SEGMENT_REQUIRE_POS; @@ -167267,8 +197887,15 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ } if( SQLITE_OK==rc && pCsr->nSegment==nSeg && SQLITE_OK==(rc = sqlite3Fts3SegReaderStart(p, pCsr, pFilter)) - && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pCsr)) ){ + int bEmpty = 0; + rc = sqlite3Fts3SegReaderStep(p, pCsr); + if( rc==SQLITE_OK ){ + bEmpty = 1; + }else if( rc!=SQLITE_ROW ){ + sqlite3Fts3SegReaderFinish(pCsr); + break; + } if( bUseHint && iIdx>0 ){ const char *zKey = pCsr->zTerm; int nKey = pCsr->nTerm; @@ -167279,11 +197906,13 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ if( rc==SQLITE_OK && pWriter->nLeafEst ){ fts3LogMerge(nSeg, iAbsLevel); - do { - rc = fts3IncrmergeAppend(p, pWriter, pCsr); - if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr); - if( pWriter->nWork>=nRem && rc==SQLITE_ROW ) rc = SQLITE_OK; - }while( rc==SQLITE_ROW ); + if( bEmpty==0 ){ + do { + rc = fts3IncrmergeAppend(p, pWriter, pCsr); + if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr); + if( pWriter->nWork>=nRem && rc==SQLITE_ROW ) rc = SQLITE_OK; + }while( rc==SQLITE_ROW ); + } /* Update or delete the input segments */ if( rc==SQLITE_OK ){ @@ -167324,7 +197953,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ ** the integer. ** ** This function used for parameters to merge= and incrmerge= -** commands. +** commands. */ static int fts3Getint(const char **pz){ const char *z = *pz; @@ -167348,7 +197977,7 @@ static int fts3DoIncrmerge( const char *zParam /* Nul-terminated string containing "A,B" */ ){ int rc; - int nMin = (FTS3_MERGE_COUNT / 2); + int nMin = (MergeCount(p) / 2); int nMerge = 0; const char *z = zParam; @@ -167393,7 +198022,7 @@ static int fts3DoAutoincrmerge( int rc = SQLITE_OK; sqlite3_stmt *pStmt = 0; p->nAutoincrmerge = fts3Getint(&zParam); - if( p->nAutoincrmerge==1 || p->nAutoincrmerge>FTS3_MERGE_COUNT ){ + if( p->nAutoincrmerge==1 || p->nAutoincrmerge>MergeCount(p) ){ p->nAutoincrmerge = 8; } if( !p->bHasStat ){ @@ -167476,12 +198105,12 @@ static u64 fts3ChecksumIndex( i64 iDocid = 0; i64 iCol = 0; - i64 iPos = 0; + u64 iPos = 0; pCsr += sqlite3Fts3GetVarint(pCsr, &iDocid); while( pCsrbDescIdx ){ + iDocid = (i64)((u64)iDocid - iVal); + }else{ + iDocid = (i64)((u64)iDocid + iVal); + } } }else{ iPos += (iVal - 2); @@ -167515,7 +198148,7 @@ static u64 fts3ChecksumIndex( ** to true and return SQLITE_OK. Or if the contents do not match, set *pbOk ** to false before returning. ** -** If an error occurs (e.g. an OOM or IO error), return an SQLite error +** If an error occurs (e.g. an OOM or IO error), return an SQLite error ** code. The final value of *pbOk is undefined in this case. */ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ @@ -167546,7 +198179,7 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ sqlite3_tokenizer_module const *pModule = p->pTokenizer->pModule; sqlite3_stmt *pStmt = 0; char *zSql; - + zSql = sqlite3_mprintf("SELECT %s" , p->zReadExprlist); if( !zSql ){ rc = SQLITE_NOMEM; @@ -167563,10 +198196,9 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ for(iCol=0; rc==SQLITE_OK && iColnColumn; iCol++){ if( p->abNotindexed[iCol]==0 ){ const char *zText = (const char *)sqlite3_column_text(pStmt, iCol+1); - int nText = sqlite3_column_bytes(pStmt, iCol+1); sqlite3_tokenizer_cursor *pT = 0; - rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, nText,&pT); + rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, -1, &pT); while( rc==SQLITE_OK ){ char const *zToken; /* Buffer containing token */ int nToken = 0; /* Number of bytes in token */ @@ -167606,7 +198238,7 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ ** the FTS index are correct, return SQLITE_OK. Or, if the contents of the ** FTS index are incorrect, return SQLITE_CORRUPT_VTAB. ** -** Or, if an error (e.g. an OOM or IO error) occurs, return an SQLite +** Or, if an error (e.g. an OOM or IO error) occurs, return an SQLite ** error code. ** ** The integrity-check works as follows. For each token and indexed token @@ -167615,7 +198247,7 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ ** ** + The index number (0 for the main index, 1 for the first prefix ** index etc.), -** + The token (or token prefix) text itself, +** + The token (or token prefix) text itself, ** + The language-id of the row it appears in, ** + The docid of the row it appears in, ** + The column it appears in, and @@ -167626,7 +198258,7 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ ** ** The integrity-check code calculates the same checksum in two ways: ** -** 1. By scanning the contents of the FTS index, and +** 1. By scanning the contents of the FTS index, and ** 2. By scanning and tokenizing the content table. ** ** If the two checksums are identical, the integrity-check is deemed to have @@ -167647,11 +198279,11 @@ static int fts3DoIntegrityCheck( ** ** "INSERT INTO tbl(tbl) VALUES()" ** -** Argument pVal contains the result of . Currently the only +** Argument pVal contains the result of . Currently the only ** meaningful value to insert is the text 'optimize'. */ static int fts3SpecialInsert(Fts3Table *p, sqlite3_value *pVal){ - int rc; /* Return Code */ + int rc = SQLITE_ERROR; /* Return Code */ const char *zVal = (const char *)sqlite3_value_text(pVal); int nVal = sqlite3_value_bytes(pVal); @@ -167667,21 +198299,27 @@ static int fts3SpecialInsert(Fts3Table *p, sqlite3_value *pVal){ rc = fts3DoIncrmerge(p, &zVal[6]); }else if( nVal>10 && 0==sqlite3_strnicmp(zVal, "automerge=", 10) ){ rc = fts3DoAutoincrmerge(p, &zVal[10]); -#ifdef SQLITE_TEST - }else if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){ - p->nNodeSize = atoi(&zVal[9]); - rc = SQLITE_OK; - }else if( nVal>11 && 0==sqlite3_strnicmp(zVal, "maxpending=", 9) ){ - p->nMaxPendingData = atoi(&zVal[11]); - rc = SQLITE_OK; - }else if( nVal>21 && 0==sqlite3_strnicmp(zVal, "test-no-incr-doclist=", 21) ){ - p->bNoIncrDoclist = atoi(&zVal[21]); - rc = SQLITE_OK; -#endif +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) }else{ - rc = SQLITE_ERROR; + int v; + if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){ + v = atoi(&zVal[9]); + if( v>=24 && v<=p->nPgsz-35 ) p->nNodeSize = v; + rc = SQLITE_OK; + }else if( nVal>11 && 0==sqlite3_strnicmp(zVal, "maxpending=", 9) ){ + v = atoi(&zVal[11]); + if( v>=64 && v<=FTS3_MAX_PENDING_DATA ) p->nMaxPendingData = v; + rc = SQLITE_OK; + }else if( nVal>21 && 0==sqlite3_strnicmp(zVal,"test-no-incr-doclist=",21) ){ + p->bNoIncrDoclist = atoi(&zVal[21]); + rc = SQLITE_OK; + }else if( nVal>11 && 0==sqlite3_strnicmp(zVal,"mergecount=",11) ){ + v = atoi(&zVal[11]); + if( v>=4 && v<=FTS3_MERGE_COUNT && (v&1)==0 ) p->nMergeCount = v; + rc = SQLITE_OK; + } +#endif } - return rc; } @@ -167699,7 +198337,7 @@ SQLITE_PRIVATE void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *pCsr){ } /* -** Free all entries in the pCsr->pDeffered list. Entries are added to +** Free all entries in the pCsr->pDeffered list. Entries are added to ** this list using sqlite3Fts3DeferToken(). */ SQLITE_PRIVATE void sqlite3Fts3FreeDeferredTokens(Fts3Cursor *pCsr){ @@ -167727,14 +198365,14 @@ SQLITE_PRIVATE int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *pCsr){ int i; /* Used to iterate through table columns */ sqlite3_int64 iDocid; /* Docid of the row pCsr points to */ Fts3DeferredToken *pDef; /* Used to iterate through deferred tokens */ - + Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; sqlite3_tokenizer *pT = p->pTokenizer; sqlite3_tokenizer_module const *pModule = pT->pModule; - + assert( pCsr->isRequireSeek==0 ); iDocid = sqlite3_column_int64(pCsr->pStmt, 0); - + for(i=0; inColumn && rc==SQLITE_OK; i++){ if( p->abNotindexed[i]==0 ){ const char *zText = (const char *)sqlite3_column_text(pCsr->pStmt, i+1); @@ -167775,8 +198413,8 @@ SQLITE_PRIVATE int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *pCsr){ } SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList( - Fts3DeferredToken *p, - char **ppData, + Fts3DeferredToken *p, + char **ppData, int *pnData ){ char *pRet; @@ -167790,13 +198428,13 @@ SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList( return SQLITE_OK; } - pRet = (char *)sqlite3_malloc(p->pList->nData); + pRet = (char *)sqlite3_malloc64(p->pList->nData); if( !pRet ) return SQLITE_NOMEM; nSkip = sqlite3Fts3GetVarint(p->pList->aData, &dummy); *pnData = p->pList->nData - nSkip; *ppData = pRet; - + memcpy(pRet, &p->pList->aData[nSkip], *pnData); return SQLITE_OK; } @@ -167810,13 +198448,13 @@ SQLITE_PRIVATE int sqlite3Fts3DeferToken( int iCol /* Column that token must appear in (or -1) */ ){ Fts3DeferredToken *pDeferred; - pDeferred = sqlite3_malloc(sizeof(*pDeferred)); + pDeferred = sqlite3_malloc64(sizeof(*pDeferred)); if( !pDeferred ){ return SQLITE_NOMEM; } memset(pDeferred, 0, sizeof(*pDeferred)); pDeferred->pToken = pToken; - pDeferred->pNext = pCsr->pDeferred; + pDeferred->pNext = pCsr->pDeferred; pDeferred->iCol = iCol; pCsr->pDeferred = pDeferred; @@ -167833,8 +198471,8 @@ SQLITE_PRIVATE int sqlite3Fts3DeferToken( ** of subsiduary data structures accordingly. */ static int fts3DeleteByRowid( - Fts3Table *p, - sqlite3_value *pRowid, + Fts3Table *p, + sqlite3_value *pRowid, int *pnChng, /* IN/OUT: Decrement if row is deleted */ u32 *aSzDel ){ @@ -167872,14 +198510,14 @@ static int fts3DeleteByRowid( ** This function does the work for the xUpdate method of FTS3 virtual ** tables. The schema of the virtual table being: ** -** CREATE TABLE
                ( +** CREATE TABLE
                ( ** , -**
                HIDDEN, -** docid HIDDEN, +**
                HIDDEN, +** docid HIDDEN, ** HIDDEN ** ); ** -** +** */ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( sqlite3_vtab *pVtab, /* FTS3 vtab object */ @@ -167899,7 +198537,7 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( assert( p->bHasStat==0 || p->bHasStat==1 ); assert( p->pSegments==0 ); - assert( + assert( nArg==1 /* DELETE operations */ || nArg==(2 + p->nColumn + 3) /* INSERT or UPDATE operations */ ); @@ -167908,9 +198546,9 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( ** ** INSERT INTO xyz(xyz) VALUES('command'); */ - if( nArg>1 - && sqlite3_value_type(apVal[0])==SQLITE_NULL - && sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL + if( nArg>1 + && sqlite3_value_type(apVal[0])==SQLITE_NULL + && sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL ){ rc = fts3SpecialInsert(p, apVal[p->nColumn+2]); goto update_out; @@ -167922,7 +198560,7 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( } /* Allocate space to hold the change in document sizes */ - aSzDel = sqlite3_malloc( sizeof(aSzDel[0])*(p->nColumn+1)*2 ); + aSzDel = sqlite3_malloc64(sizeof(aSzDel[0])*((sqlite3_int64)p->nColumn+1)*2); if( aSzDel==0 ){ rc = SQLITE_NOMEM; goto update_out; @@ -167949,24 +198587,24 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( pNewRowid = apVal[1]; } - if( sqlite3_value_type(pNewRowid)!=SQLITE_NULL && ( + if( sqlite3_value_type(pNewRowid)!=SQLITE_NULL && ( sqlite3_value_type(apVal[0])==SQLITE_NULL || sqlite3_value_int64(apVal[0])!=sqlite3_value_int64(pNewRowid) )){ /* The new rowid is not NULL (in this case the rowid will be - ** automatically assigned and there is no chance of a conflict), and + ** automatically assigned and there is no chance of a conflict), and ** the statement is either an INSERT or an UPDATE that modifies the ** rowid column. So if the conflict mode is REPLACE, then delete any - ** existing row with rowid=pNewRowid. + ** existing row with rowid=pNewRowid. ** - ** Or, if the conflict mode is not REPLACE, insert the new record into + ** Or, if the conflict mode is not REPLACE, insert the new record into ** the %_content table. If we hit the duplicate rowid constraint (or any ** other error) while doing so, return immediately. ** ** This branch may also run if pNewRowid contains a value that cannot - ** be losslessly converted to an integer. In this case, the eventual + ** be losslessly converted to an integer. In this case, the eventual ** call to fts3InsertData() (either just below or further on in this - ** function) will return SQLITE_MISMATCH. If fts3DeleteByRowid is + ** function) will return SQLITE_MISMATCH. If fts3DeleteByRowid is ** invoked, it will delete zero rows (since no row will have ** docid=$pNewRowid if $pNewRowid is not an integer value). */ @@ -167987,7 +198625,7 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( assert( sqlite3_value_type(apVal[0])==SQLITE_INTEGER ); rc = fts3DeleteByRowid(p, apVal[0], &nChng, aSzDel); } - + /* If this is an INSERT or UPDATE operation, insert the new record. */ if( nArg>1 && rc==SQLITE_OK ){ int iLangid = sqlite3_value_int(apVal[2 + p->nColumn + 2]); @@ -168020,10 +198658,10 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( return rc; } -/* +/* ** Flush any data in the pending-terms hash table to disk. If successful, -** merge all segments in the database (including the new segment, if -** there was any data to flush) into a single segment. +** merge all segments in the database (including the new segment, if +** there was any data to flush) into a single segment. */ SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *p){ int rc; @@ -168065,6 +198703,10 @@ SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *p){ /* #include */ /* #include */ +#ifndef SQLITE_AMALGAMATION +typedef sqlite3_int64 i64; +#endif + /* ** Characters that may appear in the second argument to matchinfo(). */ @@ -168079,13 +198721,13 @@ SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *p){ #define FTS3_MATCHINFO_LHITS_BM 'b' /* nCol*nPhrase values */ /* -** The default value for the second argument to matchinfo(). +** The default value for the second argument to matchinfo(). */ #define FTS3_MATCHINFO_DEFAULT "pcx" /* -** Used as an fts3ExprIterate() context when loading phrase doclists to +** Used as an sqlite3Fts3ExprIterate() context when loading phrase doclists to ** Fts3Expr.aDoclist[]/nDoclist. */ typedef struct LoadDoclistCtx LoadDoclistCtx; @@ -168096,7 +198738,7 @@ struct LoadDoclistCtx { }; /* -** The following types are used as part of the implementation of the +** The following types are used as part of the implementation of the ** fts3BestSnippet() routine. */ typedef struct SnippetIter SnippetIter; @@ -168115,9 +198757,9 @@ struct SnippetIter { struct SnippetPhrase { int nToken; /* Number of tokens in phrase */ char *pList; /* Pointer to start of phrase position list */ - int iHead; /* Next value in position list */ + i64 iHead; /* Next value in position list */ char *pHead; /* Position list data following iHead */ - int iTail; /* Next value in trailing position list */ + i64 iTail; /* Next value in trailing position list */ char *pTail; /* Position list data following iTail */ }; @@ -168129,7 +198771,7 @@ struct SnippetFragment { }; /* -** This type is used as an fts3ExprIterate() context object while +** This type is used as an sqlite3Fts3ExprIterate() context object while ** accumulating the data returned by the matchinfo() function. */ typedef struct MatchInfo MatchInfo; @@ -168176,17 +198818,18 @@ struct StrBuffer { /* ** Allocate a two-slot MatchinfoBuffer object. */ -static MatchinfoBuffer *fts3MIBufferNew(int nElem, const char *zMatchinfo){ +static MatchinfoBuffer *fts3MIBufferNew(size_t nElem, const char *zMatchinfo){ MatchinfoBuffer *pRet; - int nByte = sizeof(u32) * (2*nElem + 1) + sizeof(MatchinfoBuffer); - int nStr = (int)strlen(zMatchinfo); + sqlite3_int64 nByte = sizeof(u32) * (2*(sqlite3_int64)nElem + 1) + + sizeof(MatchinfoBuffer); + sqlite3_int64 nStr = strlen(zMatchinfo); - pRet = sqlite3_malloc(nByte + nStr+1); + pRet = sqlite3Fts3MallocZero(nByte + nStr+1); if( pRet ){ - memset(pRet, 0, nByte); pRet->aMatchinfo[0] = (u8*)(&pRet->aMatchinfo[1]) - (u8*)pRet; - pRet->aMatchinfo[1+nElem] = pRet->aMatchinfo[0] + sizeof(u32)*(nElem+1); - pRet->nElem = nElem; + pRet->aMatchinfo[1+nElem] = pRet->aMatchinfo[0] + + sizeof(u32)*((int)nElem+1); + pRet->nElem = (int)nElem; pRet->zMatchinfo = ((char*)pRet) + nByte; memcpy(pRet->zMatchinfo, zMatchinfo, nStr+1); pRet->aRef[0] = 1; @@ -168198,8 +198841,8 @@ static MatchinfoBuffer *fts3MIBufferNew(int nElem, const char *zMatchinfo){ static void fts3MIBufferFree(void *p){ MatchinfoBuffer *pBuf = (MatchinfoBuffer*)((u8*)p - ((u32*)p)[-1]); - assert( (u32*)p==&pBuf->aMatchinfo[1] - || (u32*)p==&pBuf->aMatchinfo[pBuf->nElem+2] + assert( (u32*)p==&pBuf->aMatchinfo[1] + || (u32*)p==&pBuf->aMatchinfo[pBuf->nElem+2] ); if( (u32*)p==&pBuf->aMatchinfo[1] ){ pBuf->aRef[1] = 0; @@ -168226,7 +198869,7 @@ static void (*fts3MIBufferAlloc(MatchinfoBuffer *p, u32 **paOut))(void*){ aOut = &p->aMatchinfo[p->nElem+2]; xRet = fts3MIBufferFree; }else{ - aOut = (u32*)sqlite3_malloc(p->nElem * sizeof(u32)); + aOut = (u32*)sqlite3_malloc64(p->nElem * sizeof(u32)); if( aOut ){ xRet = sqlite3_free; if( p->bGlobal ) memcpy(aOut, &p->aMatchinfo[1], p->nElem*sizeof(u32)); @@ -168255,7 +198898,7 @@ SQLITE_PRIVATE void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p){ } } -/* +/* ** End of MatchinfoBuffer code. *************************************************************************/ @@ -168280,14 +198923,14 @@ SQLITE_PRIVATE void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p){ ** After it returns, *piPos contains the value of the next element of the ** list and *pp is advanced to the following varint. */ -static void fts3GetDeltaPosition(char **pp, int *piPos){ +static void fts3GetDeltaPosition(char **pp, i64 *piPos){ int iVal; *pp += fts3GetVarint32(*pp, &iVal); *piPos += (iVal-2); } /* -** Helper function for fts3ExprIterate() (see below). +** Helper function for sqlite3Fts3ExprIterate() (see below). */ static int fts3ExprIterate2( Fts3Expr *pExpr, /* Expression to iterate phrases of */ @@ -168316,12 +198959,12 @@ static int fts3ExprIterate2( ** are part of a sub-tree that is the right-hand-side of a NOT operator. ** For each phrase node found, the supplied callback function is invoked. ** -** If the callback function returns anything other than SQLITE_OK, +** If the callback function returns anything other than SQLITE_OK, ** the iteration is abandoned and the error code returned immediately. ** Otherwise, SQLITE_OK is returned after a callback has been made for ** all eligible phrase nodes. */ -static int fts3ExprIterate( +SQLITE_PRIVATE int sqlite3Fts3ExprIterate( Fts3Expr *pExpr, /* Expression to iterate phrases of */ int (*x)(Fts3Expr*,int,void*), /* Callback function to invoke for phrases */ void *pCtx /* Second argument to pass to callback */ @@ -168330,10 +198973,9 @@ static int fts3ExprIterate( return fts3ExprIterate2(pExpr, &iPhrase, x, pCtx); } - /* -** This is an fts3ExprIterate() callback used while loading the doclists -** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also +** This is an sqlite3Fts3ExprIterate() callback used while loading the +** doclists for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also ** fts3ExprLoadDoclists(). */ static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ @@ -168351,11 +198993,11 @@ static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ /* ** Load the doclists for each phrase in the query associated with FTS3 cursor -** pCsr. +** pCsr. ** -** If pnPhrase is not NULL, then *pnPhrase is set to the number of matchable -** phrases in the expression (all phrases except those directly or -** indirectly descended from the right-hand-side of a NOT operator). If +** If pnPhrase is not NULL, then *pnPhrase is set to the number of matchable +** phrases in the expression (all phrases except those directly or +** indirectly descended from the right-hand-side of a NOT operator). If ** pnToken is not NULL, then it is set to the number of tokens in all ** matchable phrases of the expression. */ @@ -168365,9 +199007,9 @@ static int fts3ExprLoadDoclists( int *pnToken /* OUT: Number of tokens in query */ ){ int rc; /* Return Code */ - LoadDoclistCtx sCtx = {0,0,0}; /* Context for fts3ExprIterate() */ + LoadDoclistCtx sCtx = {0,0,0}; /* Context for sqlite3Fts3ExprIterate() */ sCtx.pCsr = pCsr; - rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb, (void *)&sCtx); + rc = sqlite3Fts3ExprIterate(pCsr->pExpr,fts3ExprLoadDoclistsCb,(void*)&sCtx); if( pnPhrase ) *pnPhrase = sCtx.nPhrase; if( pnToken ) *pnToken = sCtx.nToken; return rc; @@ -168380,19 +199022,19 @@ static int fts3ExprPhraseCountCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ } static int fts3ExprPhraseCount(Fts3Expr *pExpr){ int nPhrase = 0; - (void)fts3ExprIterate(pExpr, fts3ExprPhraseCountCb, (void *)&nPhrase); + (void)sqlite3Fts3ExprIterate(pExpr, fts3ExprPhraseCountCb, (void *)&nPhrase); return nPhrase; } /* -** Advance the position list iterator specified by the first two +** Advance the position list iterator specified by the first two ** arguments so that it points to the first element with a value greater ** than or equal to parameter iNext. */ -static void fts3SnippetAdvance(char **ppIter, int *piIter, int iNext){ +static void fts3SnippetAdvance(char **ppIter, i64 *piIter, int iNext){ char *pIter = *ppIter; if( pIter ){ - int iIter = *piIter; + i64 iIter = *piIter; while( iIteraPhrase[i]; if( pPhrase->pTail ){ char *pCsr = pPhrase->pTail; - int iCsr = pPhrase->iTail; + i64 iCsr = pPhrase->iTail; - while( iCsr<(iStart+pIter->nSnippet) ){ + while( iCsr<(iStart+pIter->nSnippet) && iCsr>=iStart ){ int j; - u64 mPhrase = (u64)1 << i; + u64 mPhrase = (u64)1 << (i%64); u64 mPos = (u64)1 << (iCsr - iStart); - assert( iCsr>=iStart ); + assert( iCsr>=iStart && (iCsr - iStart)<=64 ); + assert( i>=0 ); if( (mCover|mCovered)&mPhrase ){ iScore++; }else{ @@ -168507,8 +199150,9 @@ static void fts3SnippetDetails( } /* -** This function is an fts3ExprIterate() callback used by fts3BestSnippet(). -** Each invocation populates an element of the SnippetIter.aPhrase[] array. +** This function is an sqlite3Fts3ExprIterate() callback used by +** fts3BestSnippet(). Each invocation populates an element of the +** SnippetIter.aPhrase[] array. */ static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){ SnippetIter *p = (SnippetIter *)ctx; @@ -168520,17 +199164,20 @@ static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){ rc = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol, &pCsr); assert( rc==SQLITE_OK || pCsr==0 ); if( pCsr ){ - int iFirst = 0; + i64 iFirst = 0; pPhrase->pList = pCsr; fts3GetDeltaPosition(&pCsr, &iFirst); - assert( iFirst>=0 ); - pPhrase->pHead = pCsr; - pPhrase->pTail = pCsr; - pPhrase->iHead = iFirst; - pPhrase->iTail = iFirst; + if( iFirst<0 ){ + rc = FTS_CORRUPT_VTAB; + }else{ + pPhrase->pHead = pCsr; + pPhrase->pTail = pCsr; + pPhrase->iHead = iFirst; + pPhrase->iTail = iFirst; + } }else{ assert( rc!=SQLITE_OK || ( - pPhrase->pList==0 && pPhrase->pHead==0 && pPhrase->pTail==0 + pPhrase->pList==0 && pPhrase->pHead==0 && pPhrase->pTail==0 )); } @@ -168538,14 +199185,14 @@ static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){ } /* -** Select the fragment of text consisting of nFragment contiguous tokens +** Select the fragment of text consisting of nFragment contiguous tokens ** from column iCol that represent the "best" snippet. The best snippet ** is the snippet with the highest score, where scores are calculated ** by adding: ** ** (a) +1 point for each occurrence of a matchable phrase in the snippet. ** -** (b) +1000 points for the first occurrence of each matchable phrase in +** (b) +1000 points for the first occurrence of each matchable phrase in ** the snippet for which the corresponding mCovered bit is not set. ** ** The selected snippet parameters are stored in structure *pFragment before @@ -168564,7 +199211,7 @@ static int fts3BestSnippet( int rc; /* Return Code */ int nList; /* Number of phrases in expression */ SnippetIter sIter; /* Iterates through snippet candidates */ - int nByte; /* Number of bytes of space to allocate */ + sqlite3_int64 nByte; /* Number of bytes of space to allocate */ int iBestScore = -1; /* Best snippet score found so far */ int i; /* Loop counter */ @@ -168582,11 +199229,10 @@ static int fts3BestSnippet( ** the required space using malloc(). */ nByte = sizeof(SnippetPhrase) * nList; - sIter.aPhrase = (SnippetPhrase *)sqlite3_malloc(nByte); + sIter.aPhrase = (SnippetPhrase *)sqlite3Fts3MallocZero(nByte); if( !sIter.aPhrase ){ return SQLITE_NOMEM; } - memset(sIter.aPhrase, 0, nByte); /* Initialize the contents of the SnippetIter object. Then iterate through ** the set of phrases in the expression to populate the aPhrase[] array. @@ -168596,17 +199242,19 @@ static int fts3BestSnippet( sIter.nSnippet = nSnippet; sIter.nPhrase = nList; sIter.iCurrent = -1; - rc = fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void*)&sIter); + rc = sqlite3Fts3ExprIterate( + pCsr->pExpr, fts3SnippetFindPositions, (void*)&sIter + ); if( rc==SQLITE_OK ){ /* Set the *pmSeen output variable. */ for(i=0; iiCol = iCol; @@ -168652,8 +199300,8 @@ static int fts3StringAppend( ** appended data. */ if( pStr->n+nAppend+1>=pStr->nAlloc ){ - int nAlloc = pStr->nAlloc+nAppend+100; - char *zNew = sqlite3_realloc(pStr->z, nAlloc); + sqlite3_int64 nAlloc = pStr->nAlloc+(sqlite3_int64)nAppend+100; + char *zNew = sqlite3_realloc64(pStr->z, nAlloc); if( !zNew ){ return SQLITE_NOMEM; } @@ -168678,8 +199326,8 @@ static int fts3StringAppend( ** ** ........X.....X ** -** This function "shifts" the beginning of the snippet forward in the -** document so that there are approximately the same number of +** This function "shifts" the beginning of the snippet forward in the +** document so that there are approximately the same number of ** non-highlighted terms to the right of the final highlighted term as there ** are to the left of the first highlighted term. For example, to this: ** @@ -168687,8 +199335,8 @@ static int fts3StringAppend( ** ** This is done as part of extracting the snippet text, not when selecting ** the snippet. Snippet selection is done based on doclists only, so there -** is no way for fts3BestSnippet() to know whether or not the document -** actually contains terms that follow the final highlighted term. +** is no way for fts3BestSnippet() to know whether or not the document +** actually contains terms that follow the final highlighted term. */ static int fts3SnippetShift( Fts3Table *pTab, /* FTS3 table snippet comes from */ @@ -168708,6 +199356,7 @@ static int fts3SnippetShift( for(nLeft=0; !(hlmask & ((u64)1 << nLeft)); nLeft++); for(nRight=0; !(hlmask & ((u64)1 << (nSnippet-1-nRight))); nRight++); + assert( (nSnippet-1-nRight)<=63 && (nSnippet-1-nRight)>=0 ); nDesired = (nLeft-nRight)/2; /* Ideally, the start of the snippet should be pushed forward in the @@ -168777,7 +199426,7 @@ static int fts3SnippetText( int iCol = pFragment->iCol+1; /* Query column to extract text from */ sqlite3_tokenizer_module *pMod; /* Tokenizer module methods object */ sqlite3_tokenizer_cursor *pC; /* Tokenizer cursor open on zDoc/nDoc */ - + zDoc = (const char *)sqlite3_column_text(pCsr->pStmt, iCol); if( zDoc==0 ){ if( sqlite3_column_type(pCsr->pStmt, iCol)!=SQLITE_NULL ){ @@ -168817,7 +199466,7 @@ static int fts3SnippetText( if( rc==SQLITE_DONE ){ /* Special case - the last token of the snippet is also the last token ** of the column. Append any punctuation that occurred between the end - ** of the previous token and the end of the document to the output. + ** of the previous token and the end of the document to the output. ** Then break out of the loop. */ rc = fts3StringAppend(pOut, &zDoc[iEnd], -1); } @@ -168834,7 +199483,7 @@ static int fts3SnippetText( /* Now that the shift has been done, check if the initial "..." are ** required. They are required if (a) this is not the first fragment, - ** or (b) this fragment does not begin at position 0 of its column. + ** or (b) this fragment does not begin at position 0 of its column. */ if( rc==SQLITE_OK ){ if( iPos>0 || iFragment>0 ){ @@ -168870,8 +199519,8 @@ static int fts3SnippetText( /* -** This function is used to count the entries in a column-list (a -** delta-encoded list of term offsets within a single column of a single +** This function is used to count the entries in a column-list (a +** delta-encoded list of term offsets within a single column of a single ** row). When this function is called, *ppCollist should point to the ** beginning of the first varint in the column-list (the varint that ** contains the position of the first matching term in the column data). @@ -168900,7 +199549,7 @@ static int fts3ColumnlistCount(char **ppCollist){ /* ** This function gathers 'y' or 'b' data for a single phrase. */ -static void fts3ExprLHits( +static int fts3ExprLHits( Fts3Expr *pExpr, /* Phrase expression node */ MatchInfo *p /* Matchinfo context */ ){ @@ -168917,7 +199566,7 @@ static void fts3ExprLHits( iStart = pExpr->iPhrase * ((p->nCol + 31) / 32); } - while( 1 ){ + if( pIter ) while( 1 ){ int nHit = fts3ColumnlistCount(&pIter); if( (pPhrase->iColumn>=pTab->nColumn || pPhrase->iColumn==iCol) ){ if( p->flag==FTS3_MATCHINFO_LHITS ){ @@ -168930,34 +199579,38 @@ static void fts3ExprLHits( if( *pIter!=0x01 ) break; pIter++; pIter += fts3GetVarint32(pIter, &iCol); + if( iCol>=p->nCol ) return FTS_CORRUPT_VTAB; } + return SQLITE_OK; } /* ** Gather the results for matchinfo directives 'y' and 'b'. */ -static void fts3ExprLHitGather( +static int fts3ExprLHitGather( Fts3Expr *pExpr, MatchInfo *p ){ + int rc = SQLITE_OK; assert( (pExpr->pLeft==0)==(pExpr->pRight==0) ); if( pExpr->bEof==0 && pExpr->iDocid==p->pCursor->iPrevId ){ if( pExpr->pLeft ){ - fts3ExprLHitGather(pExpr->pLeft, p); - fts3ExprLHitGather(pExpr->pRight, p); + rc = fts3ExprLHitGather(pExpr->pLeft, p); + if( rc==SQLITE_OK ) rc = fts3ExprLHitGather(pExpr->pRight, p); }else{ - fts3ExprLHits(pExpr, p); + rc = fts3ExprLHits(pExpr, p); } } + return rc; } /* -** fts3ExprIterate() callback used to collect the "global" matchinfo stats -** for a single query. +** sqlite3Fts3ExprIterate() callback used to collect the "global" matchinfo +** stats for a single query. ** -** fts3ExprIterate() callback to load the 'global' elements of a -** FTS3_MATCHINFO_HITS matchinfo array. The global stats are those elements -** of the matchinfo array that are constant for all rows returned by the +** sqlite3Fts3ExprIterate() callback to load the 'global' elements of a +** FTS3_MATCHINFO_HITS matchinfo array. The global stats are those elements +** of the matchinfo array that are constant for all rows returned by the ** current query. ** ** Argument pCtx is actually a pointer to a struct of type MatchInfo. This @@ -168973,7 +199626,7 @@ static void fts3ExprLHitGather( ** at least one instance of phrase iPhrase. ** ** If the phrase pExpr consists entirely of deferred tokens, then all X and -** Y values are set to nDoc, where nDoc is the number of documents in the +** Y values are set to nDoc, where nDoc is the number of documents in the ** file system. This is done because the full-text index doclist is required ** to calculate these values properly, and the full-text index doclist is ** not available for deferred tokens. @@ -168990,8 +199643,8 @@ static int fts3ExprGlobalHitsCb( } /* -** fts3ExprIterate() callback used to collect the "local" part of the -** FTS3_MATCHINFO_HITS array. The local stats are those elements of the +** sqlite3Fts3ExprIterate() callback used to collect the "local" part of the +** FTS3_MATCHINFO_HITS array. The local stats are those elements of the ** array that are different for each row returned by the query. */ static int fts3ExprLocalHitsCb( @@ -169018,7 +199671,7 @@ static int fts3ExprLocalHitsCb( } static int fts3MatchinfoCheck( - Fts3Table *pTab, + Fts3Table *pTab, char cArg, char **pzErr ){ @@ -169038,13 +199691,13 @@ static int fts3MatchinfoCheck( return SQLITE_ERROR; } -static int fts3MatchinfoSize(MatchInfo *pInfo, char cArg){ - int nVal; /* Number of integers output by cArg */ +static size_t fts3MatchinfoSize(MatchInfo *pInfo, char cArg){ + size_t nVal; /* Number of integers output by cArg */ switch( cArg ){ case FTS3_MATCHINFO_NDOC: - case FTS3_MATCHINFO_NPHRASE: - case FTS3_MATCHINFO_NCOL: + case FTS3_MATCHINFO_NPHRASE: + case FTS3_MATCHINFO_NCOL: nVal = 1; break; @@ -169075,11 +199728,15 @@ static int fts3MatchinfoSelectDoctotal( Fts3Table *pTab, sqlite3_stmt **ppStmt, sqlite3_int64 *pnDoc, - const char **paLen + const char **paLen, + const char **ppEnd ){ sqlite3_stmt *pStmt; const char *a; + const char *pEnd; sqlite3_int64 nDoc; + int n; + if( !*ppStmt ){ int rc = sqlite3Fts3SelectDoctotal(pTab, ppStmt); @@ -169088,17 +199745,25 @@ static int fts3MatchinfoSelectDoctotal( pStmt = *ppStmt; assert( sqlite3_data_count(pStmt)==1 ); + n = sqlite3_column_bytes(pStmt, 0); a = sqlite3_column_blob(pStmt, 0); - a += sqlite3Fts3GetVarint(a, &nDoc); - if( nDoc==0 ) return FTS_CORRUPT_VTAB; - *pnDoc = (u32)nDoc; + if( a==0 ){ + return FTS_CORRUPT_VTAB; + } + pEnd = a + n; + a += sqlite3Fts3GetVarintBounded(a, pEnd, &nDoc); + if( nDoc<=0 || a>pEnd ){ + return FTS_CORRUPT_VTAB; + } + *pnDoc = nDoc; if( paLen ) *paLen = a; + if( ppEnd ) *ppEnd = pEnd; return SQLITE_OK; } /* -** An instance of the following structure is used to store state while +** An instance of the following structure is used to store state while ** iterating through a multi-column position-list corresponding to the ** hits for a single phrase on a single row in order to calculate the ** values for a matchinfo() FTS3_MATCHINFO_LCS request. @@ -169111,7 +199776,7 @@ struct LcsIterator { int iPos; /* Current position */ }; -/* +/* ** If LcsIterator.iCol is set to the following value, the iterator has ** finished iterating through all offsets for all columns. */ @@ -169133,10 +199798,12 @@ static int fts3MatchinfoLcsCb( ** position list for the next column. */ static int fts3LcsIteratorAdvance(LcsIterator *pIter){ - char *pRead = pIter->pRead; + char *pRead; sqlite3_int64 iRead; int rc = 0; + if( NEVER(pIter==0) ) return 1; + pRead = pIter->pRead; pRead += sqlite3Fts3GetVarint(pRead, &iRead); if( iRead==0 || iRead==1 ){ pRead = 0; @@ -169148,16 +199815,16 @@ static int fts3LcsIteratorAdvance(LcsIterator *pIter){ pIter->pRead = pRead; return rc; } - + /* -** This function implements the FTS3_MATCHINFO_LCS matchinfo() flag. +** This function implements the FTS3_MATCHINFO_LCS matchinfo() flag. ** ** If the call is successful, the longest-common-substring lengths for each -** column are written into the first nCol elements of the pInfo->aMatchinfo[] +** column are written into the first nCol elements of the pInfo->aMatchinfo[] ** array before returning. SQLITE_OK is returned in this case. ** ** Otherwise, if an error occurs, an SQLite error code is returned and the -** data written to the first nCol elements of pInfo->aMatchinfo[] is +** data written to the first nCol elements of pInfo->aMatchinfo[] is ** undefined. */ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ @@ -169165,14 +199832,14 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ int i; int iCol; int nToken = 0; + int rc = SQLITE_OK; /* Allocate and populate the array of LcsIterator objects. The array ** contains one element for each matchable phrase in the query. **/ - aIter = sqlite3_malloc(sizeof(LcsIterator) * pCsr->nPhrase); + aIter = sqlite3Fts3MallocZero(sizeof(LcsIterator) * pCsr->nPhrase); if( !aIter ) return SQLITE_NOMEM; - memset(aIter, 0, sizeof(LcsIterator) * pCsr->nPhrase); - (void)fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter); + (void)sqlite3Fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter); for(i=0; inPhrase; i++){ LcsIterator *pIter = &aIter[i]; @@ -169185,13 +199852,16 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ int nLive = 0; /* Number of iterators in aIter not at EOF */ for(i=0; inPhrase; i++){ - int rc; LcsIterator *pIt = &aIter[i]; rc = sqlite3Fts3EvalPhrasePoslist(pCsr, pIt->pExpr, iCol, &pIt->pRead); - if( rc!=SQLITE_OK ) return rc; + if( rc!=SQLITE_OK ) goto matchinfo_lcs_out; if( pIt->pRead ){ pIt->iPos = pIt->iPosOffset; - fts3LcsIteratorAdvance(&aIter[i]); + fts3LcsIteratorAdvance(pIt); + if( pIt->pRead==0 ){ + rc = FTS_CORRUPT_VTAB; + goto matchinfo_lcs_out; + } nLive++; } } @@ -169223,13 +199893,14 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ pInfo->aMatchinfo[iCol] = nLcs; } + matchinfo_lcs_out: sqlite3_free(aIter); - return SQLITE_OK; + return rc; } /* ** Populate the buffer pInfo->aMatchinfo[] with an array of integers to -** be returned by the matchinfo() function. Argument zArg contains the +** be returned by the matchinfo() function. Argument zArg contains the ** format string passed as the second argument to matchinfo (or the ** default value "pcx" if no second argument was specified). The format ** string has already been validated and the pInfo->aMatchinfo[] array @@ -169240,7 +199911,7 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ ** rows (i.e. FTS3_MATCHINFO_NPHRASE, NCOL, NDOC, AVGLENGTH and part of HITS) ** have already been populated. ** -** Return SQLITE_OK if successful, or an SQLite error code if an error +** Return SQLITE_OK if successful, or an SQLite error code if an error ** occurs. If a value other than SQLITE_OK is returned, the state the ** pInfo->aMatchinfo[] buffer is left in is undefined. */ @@ -169265,27 +199936,32 @@ static int fts3MatchinfoValues( case FTS3_MATCHINFO_NCOL: if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nCol; break; - + case FTS3_MATCHINFO_NDOC: if( bGlobal ){ sqlite3_int64 nDoc = 0; - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0); + rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0, 0); pInfo->aMatchinfo[0] = (u32)nDoc; } break; - case FTS3_MATCHINFO_AVGLENGTH: + case FTS3_MATCHINFO_AVGLENGTH: if( bGlobal ){ sqlite3_int64 nDoc; /* Number of rows in table */ const char *a; /* Aggregate column length array */ + const char *pEnd; /* First byte past end of length array */ - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, &a); + rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, &a, &pEnd); if( rc==SQLITE_OK ){ int iCol; for(iCol=0; iColnCol; iCol++){ u32 iVal; sqlite3_int64 nToken; a += sqlite3Fts3GetVarint(a, &nToken); + if( a>pEnd ){ + rc = SQLITE_CORRUPT_VTAB; + break; + } iVal = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc); pInfo->aMatchinfo[iCol] = iVal; } @@ -169299,9 +199975,14 @@ static int fts3MatchinfoValues( if( rc==SQLITE_OK ){ int iCol; const char *a = sqlite3_column_blob(pSelectDocsize, 0); + const char *pEnd = a + sqlite3_column_bytes(pSelectDocsize, 0); for(iCol=0; iColnCol; iCol++){ sqlite3_int64 nToken; - a += sqlite3Fts3GetVarint(a, &nToken); + a += sqlite3Fts3GetVarintBounded(a, pEnd, &nToken); + if( a>pEnd ){ + rc = SQLITE_CORRUPT_VTAB; + break; + } pInfo->aMatchinfo[iCol] = (u32)nToken; } } @@ -169318,9 +199999,9 @@ static int fts3MatchinfoValues( case FTS3_MATCHINFO_LHITS_BM: case FTS3_MATCHINFO_LHITS: { - int nZero = fts3MatchinfoSize(pInfo, zArg[i]) * sizeof(u32); + size_t nZero = fts3MatchinfoSize(pInfo, zArg[i]) * sizeof(u32); memset(pInfo->aMatchinfo, 0, nZero); - fts3ExprLHitGather(pCsr->pExpr, pInfo); + rc = fts3ExprLHitGather(pCsr->pExpr, pInfo); break; } @@ -169332,14 +200013,14 @@ static int fts3MatchinfoValues( if( rc!=SQLITE_OK ) break; if( bGlobal ){ if( pCsr->pDeferred ){ - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &pInfo->nDoc, 0); + rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &pInfo->nDoc,0,0); if( rc!=SQLITE_OK ) break; } - rc = fts3ExprIterate(pExpr, fts3ExprGlobalHitsCb,(void*)pInfo); + rc = sqlite3Fts3ExprIterate(pExpr, fts3ExprGlobalHitsCb,(void*)pInfo); sqlite3Fts3EvalTestDeferred(pCsr, &rc); if( rc!=SQLITE_OK ) break; } - (void)fts3ExprIterate(pExpr, fts3ExprLocalHitsCb,(void*)pInfo); + (void)sqlite3Fts3ExprIterate(pExpr, fts3ExprLocalHitsCb,(void*)pInfo); break; } } @@ -169353,7 +200034,7 @@ static int fts3MatchinfoValues( /* -** Populate pCsr->aMatchinfo[] with data for the current row. The +** Populate pCsr->aMatchinfo[] with data for the current row. The ** 'matchinfo' data is an array of 32-bit unsigned integers (C type u32). */ static void fts3GetMatchinfo( @@ -169373,8 +200054,8 @@ static void fts3GetMatchinfo( sInfo.pCursor = pCsr; sInfo.nCol = pTab->nColumn; - /* If there is cached matchinfo() data, but the format string for the - ** cache does not match the format string for this request, discard + /* If there is cached matchinfo() data, but the format string for the + ** cache does not match the format string for this request, discard ** the cached data. */ if( pCsr->pMIBuffer && strcmp(pCsr->pMIBuffer->zMatchinfo, zArg) ){ sqlite3Fts3MIBufferFree(pCsr->pMIBuffer); @@ -169382,12 +200063,12 @@ static void fts3GetMatchinfo( } /* If Fts3Cursor.pMIBuffer is NULL, then this is the first time the - ** matchinfo function has been called for this query. In this case + ** matchinfo function has been called for this query. In this case ** allocate the array used to accumulate the matchinfo data and ** initialize those elements that are constant for every row. */ if( pCsr->pMIBuffer==0 ){ - int nMatchinfo = 0; /* Number of u32 elements in match-info */ + size_t nMatchinfo = 0; /* Number of u32 elements in match-info */ int i; /* Used to iterate through zArg */ /* Determine the number of phrases in the query */ @@ -169457,7 +200138,7 @@ SQLITE_PRIVATE void sqlite3Fts3Snippet( /* The returned text includes up to four fragments of text extracted from ** the data in the current row. The first iteration of the for(...) loop - ** below attempts to locate a single fragment of text nToken tokens in + ** below attempts to locate a single fragment of text nToken tokens in ** size that contains at least one instance of all phrases in the query ** expression that appear in the current row. If such a fragment of text ** cannot be found, the second iteration of the loop attempts to locate @@ -169472,6 +200153,10 @@ SQLITE_PRIVATE void sqlite3Fts3Snippet( return; } + /* Limit the snippet length to 64 tokens. */ + if( nToken<-64 ) nToken = -64; + if( nToken>+64 ) nToken = +64; + for(nSnippet=1; 1; nSnippet++){ int iSnip; /* Loop counter 0..nSnippet-1 */ @@ -169524,7 +200209,7 @@ SQLITE_PRIVATE void sqlite3Fts3Snippet( assert( nFToken>0 ); for(i=0; ipPhrase->nToken; if( pList ){ fts3GetDeltaPosition(&pList, &iPos); - assert( iPos>=0 ); + assert_fts3_nc( iPos>=0 ); } for(iTerm=0; iTermiPrevId; sCtx.pCsr = pCsr; - /* Loop through the table columns, appending offset information to + /* Loop through the table columns, appending offset information to ** string-buffer res for each column. */ for(iCol=0; iColnColumn; iCol++){ @@ -169635,19 +200320,21 @@ SQLITE_PRIVATE void sqlite3Fts3Offsets( const char *zDoc; int nDoc; - /* Initialize the contents of sCtx.aTerm[] for column iCol. There is - ** no way that this operation can fail, so the return code from - ** fts3ExprIterate() can be discarded. + /* Initialize the contents of sCtx.aTerm[] for column iCol. This + ** operation may fail if the database contains corrupt records. */ sCtx.iCol = iCol; sCtx.iTerm = 0; - (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx); + rc = sqlite3Fts3ExprIterate( + pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx + ); + if( rc!=SQLITE_OK ) goto offsets_out; - /* Retreive the text stored in column iCol. If an SQL NULL is stored + /* Retreive the text stored in column iCol. If an SQL NULL is stored ** in column iCol, jump immediately to the next iteration of the loop. ** If an OOM occurs while retrieving the data (this can happen if SQLite - ** needs to transform the data from utf-16 to utf-8), return SQLITE_NOMEM - ** to the caller. + ** needs to transform the data from utf-16 to utf-8), return SQLITE_NOMEM + ** to the caller. */ zDoc = (const char *)sqlite3_column_text(pCsr->pStmt, iCol+1); nDoc = sqlite3_column_bytes(pCsr->pStmt, iCol+1); @@ -169683,7 +200370,7 @@ SQLITE_PRIVATE void sqlite3Fts3Offsets( /* All offsets for this column have been gathered. */ rc = SQLITE_DONE; }else{ - assert( iCurrent<=iMinPos ); + assert_fts3_nc( iCurrent<=iMinPos ); if( 0==(0xFE&*pTerm->pList) ){ pTerm->pList = 0; }else{ @@ -169694,7 +200381,7 @@ SQLITE_PRIVATE void sqlite3Fts3Offsets( } if( rc==SQLITE_OK ){ char aBuffer[64]; - sqlite3_snprintf(sizeof(aBuffer), aBuffer, + sqlite3_snprintf(sizeof(aBuffer), aBuffer, "%d %d %d %d ", iCol, pTerm-sCtx.aTerm, iStart, iEnd-iStart ); rc = fts3StringAppend(&res, aBuffer, -1); @@ -169839,7 +200526,7 @@ typedef struct unicode_cursor unicode_cursor; struct unicode_tokenizer { sqlite3_tokenizer base; - int bRemoveDiacritic; + int eRemoveDiacritic; int nException; int *aiException; }; @@ -169875,7 +200562,7 @@ static int unicodeDestroy(sqlite3_tokenizer *pTokenizer){ ** ** For each codepoint in the zIn/nIn string, this function checks if the ** sqlite3FtsUnicodeIsalnum() function already returns the desired result. -** If so, no action is taken. Otherwise, the codepoint is added to the +** If so, no action is taken. Otherwise, the codepoint is added to the ** unicode_tokenizer.aiException[] array. For the purposes of tokenization, ** the return value of sqlite3FtsUnicodeIsalnum() is inverted for all ** codepoints in the aiException[] array. @@ -169901,8 +200588,8 @@ static int unicodeAddExceptions( while( zaiException, (p->nException+nEntry)*sizeof(int)); + aNew = sqlite3_realloc64(p->aiException,(p->nException+nEntry)*sizeof(int)); if( aNew==0 ) return SQLITE_NOMEM; nNew = p->nException; z = (const unsigned char *)zIn; while( zbRemoveDiacritic = 1; + pNew->eRemoveDiacritic = 1; for(i=0; rc==SQLITE_OK && ibRemoveDiacritic = 1; + pNew->eRemoveDiacritic = 1; } else if( n==19 && memcmp("remove_diacritics=0", z, 19)==0 ){ - pNew->bRemoveDiacritic = 0; + pNew->eRemoveDiacritic = 0; + } + else if( n==19 && memcmp("remove_diacritics=2", z, 19)==0 ){ + pNew->eRemoveDiacritic = 2; } else if( n>=11 && memcmp("tokenchars=", z, 11)==0 ){ rc = unicodeAddExceptions(pNew, 1, &z[11], n-11); @@ -170019,7 +200709,7 @@ static int unicodeCreate( /* ** Prepare to begin tokenizing a particular string. The input ** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in +** used to incrementally tokenize this string is returned in ** *ppCursor. */ static int unicodeOpen( @@ -170039,6 +200729,7 @@ static int unicodeOpen( pCsr->aInput = (const unsigned char *)aInput; if( aInput==0 ){ pCsr->nInput = 0; + pCsr->aInput = (const unsigned char*)""; }else if( nInput<0 ){ pCsr->nInput = (int)strlen(aInput); }else{ @@ -170083,7 +200774,7 @@ static int unicodeNext( const unsigned char *zTerm = &pCsr->aInput[pCsr->nInput]; /* Scan past any delimiter characters before the start of the next token. - ** Return SQLITE_DONE early if this takes us all the way to the end of + ** Return SQLITE_DONE early if this takes us all the way to the end of ** the input. */ while( zzToken)>=(pCsr->nAlloc-4) ){ - char *zNew = sqlite3_realloc(pCsr->zToken, pCsr->nAlloc+64); + char *zNew = sqlite3_realloc64(pCsr->zToken, pCsr->nAlloc+64); if( !zNew ) return SQLITE_NOMEM; zOut = &zNew[zOut - pCsr->zToken]; pCsr->zToken = zNew; @@ -170107,7 +200798,7 @@ static int unicodeNext( /* Write the folded case of the last character read to the output */ zEnd = z; - iOut = sqlite3FtsUnicodeFold((int)iCode, p->bRemoveDiacritic); + iOut = sqlite3FtsUnicodeFold((int)iCode, p->eRemoveDiacritic); if( iOut ){ WRITE_UTF8(zOut, iOut); } @@ -170115,7 +200806,7 @@ static int unicodeNext( /* If the cursor is not at EOF, read the next character */ if( z>=zTerm ) break; READ_UTF8(z, zTerm, iCode); - }while( unicodeIsAlnum(p, (int)iCode) + }while( unicodeIsAlnum(p, (int)iCode) || sqlite3FtsUnicodeIsdiacritic((int)iCode) ); @@ -170130,7 +200821,7 @@ static int unicodeNext( } /* -** Set *ppModule to a pointer to the sqlite3_tokenizer_module +** Set *ppModule to a pointer to the sqlite3_tokenizer_module ** structure for the unicode tokenizer. */ SQLITE_PRIVATE void sqlite3Fts3UnicodeTokenizer(sqlite3_tokenizer_module const **ppModule){ @@ -170152,7 +200843,7 @@ SQLITE_PRIVATE void sqlite3Fts3UnicodeTokenizer(sqlite3_tokenizer_module const * /************** End of fts3_unicode.c ****************************************/ /************** Begin file fts3_unicode2.c ***********************************/ /* -** 2012 May 25 +** 2012-05-25 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -170185,11 +200876,11 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int c){ ** range of unicode codepoints that are not either letters or numbers (i.e. ** codepoints for which this function should return 0). ** - ** The most significant 22 bits in each 32-bit value contain the first + ** The most significant 22 bits in each 32-bit value contain the first ** codepoint in the range. The least significant 10 bits are used to store - ** the size of the range (always at least 1). In other words, the value - ** ((C<<22) + N) represents a range of N codepoints starting with codepoint - ** C. It is not possible to represent a range larger than 1023 codepoints + ** the size of the range (always at least 1). In other words, the value + ** ((C<<22) + N) represents a range of N codepoints starting with codepoint + ** C. It is not possible to represent a range larger than 1023 codepoints ** using this format. */ static const unsigned int aEntry[] = { @@ -170312,32 +201003,48 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int c){ ** E"). The resuls of passing a codepoint that corresponds to an ** uppercase letter are undefined. */ -static int remove_diacritic(int c){ +static int remove_diacritic(int c, int bComplex){ unsigned short aDia[] = { - 0, 1797, 1848, 1859, 1891, 1928, 1940, 1995, - 2024, 2040, 2060, 2110, 2168, 2206, 2264, 2286, - 2344, 2383, 2472, 2488, 2516, 2596, 2668, 2732, - 2782, 2842, 2894, 2954, 2984, 3000, 3028, 3336, - 3456, 3696, 3712, 3728, 3744, 3896, 3912, 3928, - 3968, 4008, 4040, 4106, 4138, 4170, 4202, 4234, - 4266, 4296, 4312, 4344, 4408, 4424, 4472, 4504, - 6148, 6198, 6264, 6280, 6360, 6429, 6505, 6529, - 61448, 61468, 61534, 61592, 61642, 61688, 61704, 61726, - 61784, 61800, 61836, 61880, 61914, 61948, 61998, 62122, - 62154, 62200, 62218, 62302, 62364, 62442, 62478, 62536, - 62554, 62584, 62604, 62640, 62648, 62656, 62664, 62730, - 62924, 63050, 63082, 63274, 63390, + 0, 1797, 1848, 1859, 1891, 1928, 1940, 1995, + 2024, 2040, 2060, 2110, 2168, 2206, 2264, 2286, + 2344, 2383, 2472, 2488, 2516, 2596, 2668, 2732, + 2782, 2842, 2894, 2954, 2984, 3000, 3028, 3336, + 3456, 3696, 3712, 3728, 3744, 3766, 3832, 3896, + 3912, 3928, 3944, 3968, 4008, 4040, 4056, 4106, + 4138, 4170, 4202, 4234, 4266, 4296, 4312, 4344, + 4408, 4424, 4442, 4472, 4488, 4504, 6148, 6198, + 6264, 6280, 6360, 6429, 6505, 6529, 61448, 61468, + 61512, 61534, 61592, 61610, 61642, 61672, 61688, 61704, + 61726, 61784, 61800, 61816, 61836, 61880, 61896, 61914, + 61948, 61998, 62062, 62122, 62154, 62184, 62200, 62218, + 62252, 62302, 62364, 62410, 62442, 62478, 62536, 62554, + 62584, 62604, 62640, 62648, 62656, 62664, 62730, 62766, + 62830, 62890, 62924, 62974, 63032, 63050, 63082, 63118, + 63182, 63242, 63274, 63310, 63368, 63390, }; - char aChar[] = { - '\0', 'a', 'c', 'e', 'i', 'n', 'o', 'u', 'y', 'y', 'a', 'c', - 'd', 'e', 'e', 'g', 'h', 'i', 'j', 'k', 'l', 'n', 'o', 'r', - 's', 't', 'u', 'u', 'w', 'y', 'z', 'o', 'u', 'a', 'i', 'o', - 'u', 'g', 'k', 'o', 'j', 'g', 'n', 'a', 'e', 'i', 'o', 'r', - 'u', 's', 't', 'h', 'a', 'e', 'o', 'y', '\0', '\0', '\0', '\0', - '\0', '\0', '\0', '\0', 'a', 'b', 'd', 'd', 'e', 'f', 'g', 'h', - 'h', 'i', 'k', 'l', 'l', 'm', 'n', 'p', 'r', 'r', 's', 't', - 'u', 'v', 'w', 'w', 'x', 'y', 'z', 'h', 't', 'w', 'y', 'a', - 'e', 'i', 'o', 'u', 'y', +#define HIBIT ((unsigned char)0x80) + unsigned char aChar[] = { + '\0', 'a', 'c', 'e', 'i', 'n', + 'o', 'u', 'y', 'y', 'a', 'c', + 'd', 'e', 'e', 'g', 'h', 'i', + 'j', 'k', 'l', 'n', 'o', 'r', + 's', 't', 'u', 'u', 'w', 'y', + 'z', 'o', 'u', 'a', 'i', 'o', + 'u', 'u'|HIBIT, 'a'|HIBIT, 'g', 'k', 'o', + 'o'|HIBIT, 'j', 'g', 'n', 'a'|HIBIT, 'a', + 'e', 'i', 'o', 'r', 'u', 's', + 't', 'h', 'a', 'e', 'o'|HIBIT, 'o', + 'o'|HIBIT, 'y', '\0', '\0', '\0', '\0', + '\0', '\0', '\0', '\0', 'a', 'b', + 'c'|HIBIT, 'd', 'd', 'e'|HIBIT, 'e', 'e'|HIBIT, + 'f', 'g', 'h', 'h', 'i', 'i'|HIBIT, + 'k', 'l', 'l'|HIBIT, 'l', 'm', 'n', + 'o'|HIBIT, 'p', 'r', 'r'|HIBIT, 'r', 's', + 's'|HIBIT, 't', 'u', 'u'|HIBIT, 'v', 'w', + 'w', 'x', 'y', 'z', 'h', 't', + 'w', 'y', 'a', 'a'|HIBIT, 'a'|HIBIT, 'a'|HIBIT, + 'e', 'e'|HIBIT, 'e'|HIBIT, 'i', 'o', 'o'|HIBIT, + 'o'|HIBIT, 'o'|HIBIT, 'u', 'u'|HIBIT, 'u'|HIBIT, 'y', }; unsigned int key = (((unsigned int)c)<<3) | 0x00000007; @@ -170354,7 +201061,8 @@ static int remove_diacritic(int c){ } } assert( key>=aDia[iRes] ); - return ((c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : (int)aChar[iRes]); + if( bComplex==0 && (aChar[iRes] & 0x80) ) return c; + return (c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : ((int)aChar[iRes] & 0x7F); } @@ -170367,8 +201075,8 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int c){ unsigned int mask1 = 0x000361F8; if( c<768 || c>817 ) return 0; return (c < 768+32) ? - (mask0 & (1 << (c-768))) : - (mask1 & (1 << (c-768-32))); + (mask0 & ((unsigned int)1 << (c-768))) : + (mask1 & ((unsigned int)1 << (c-768-32))); } @@ -170381,7 +201089,7 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int c){ ** The results are undefined if the value passed to this function ** is less than zero. */ -SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ +SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int eRemoveDiacritic){ /* Each entry in the following array defines a rule for folding a range ** of codepoints to lower case. The rule applies to a range of nRange ** codepoints starting at codepoint iCode. @@ -170458,19 +201166,19 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ {42802, 1, 62}, {42873, 1, 4}, {42877, 76, 1}, {42878, 1, 10}, {42891, 0, 1}, {42893, 74, 1}, {42896, 1, 4}, {42912, 1, 10}, {42922, 72, 1}, - {65313, 14, 26}, + {65313, 14, 26}, }; static const unsigned short aiOff[] = { - 1, 2, 8, 15, 16, 26, 28, 32, - 37, 38, 40, 48, 63, 64, 69, 71, - 79, 80, 116, 202, 203, 205, 206, 207, - 209, 210, 211, 213, 214, 217, 218, 219, - 775, 7264, 10792, 10795, 23228, 23256, 30204, 54721, - 54753, 54754, 54756, 54787, 54793, 54809, 57153, 57274, - 57921, 58019, 58363, 61722, 65268, 65341, 65373, 65406, - 65408, 65410, 65415, 65424, 65436, 65439, 65450, 65462, - 65472, 65476, 65478, 65480, 65482, 65488, 65506, 65511, - 65514, 65521, 65527, 65528, 65529, + 1, 2, 8, 15, 16, 26, 28, 32, + 37, 38, 40, 48, 63, 64, 69, 71, + 79, 80, 116, 202, 203, 205, 206, 207, + 209, 210, 211, 213, 214, 217, 218, 219, + 775, 7264, 10792, 10795, 23228, 23256, 30204, 54721, + 54753, 54754, 54756, 54787, 54793, 54809, 57153, 57274, + 57921, 58019, 58363, 61722, 65268, 65341, 65373, 65406, + 65408, 65410, 65415, 65424, 65436, 65439, 65450, 65462, + 65472, 65476, 65478, 65480, 65482, 65488, 65506, 65511, + 65514, 65521, 65527, 65528, 65529, }; int ret = c; @@ -170504,9 +201212,11 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ assert( ret>0 ); } - if( bRemoveDiacritic ) ret = remove_diacritic(ret); + if( eRemoveDiacritic ){ + ret = remove_diacritic(ret, eRemoveDiacritic==2); + } } - + else if( c>=66560 && c<66600 ){ ret = c + 40; } @@ -170517,6 +201227,3859 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ #endif /* !defined(SQLITE_DISABLE_FTS3_UNICODE) */ /************** End of fts3_unicode2.c ***************************************/ +/************** Begin file json.c ********************************************/ +/* +** 2015-08-12 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This SQLite JSON functions. +** +** This file began as an extension in ext/misc/json1.c in 2015. That +** extension proved so useful that it has now been moved into the core. +** +** For the time being, all JSON is stored as pure text. (We might add +** a JSONB type in the future which stores a binary encoding of JSON in +** a BLOB, but there is no support for JSONB in the current implementation. +** This implementation parses JSON text at 250 MB/s, so it is hard to see +** how JSONB might improve on that.) +*/ +#ifndef SQLITE_OMIT_JSON +/* #include "sqliteInt.h" */ + +/* +** Growing our own isspace() routine this way is twice as fast as +** the library isspace() function, resulting in a 7% overall performance +** increase for the parser. (Ubuntu14.10 gcc 4.8.4 x64 with -Os). +*/ +static const char jsonIsSpace[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +}; +#define fast_isspace(x) (jsonIsSpace[(unsigned char)x]) + +/* +** Characters that are special to JSON. Control charaters, +** '"' and '\\'. +*/ +static const char jsonIsOk[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 +}; + + +#if !defined(SQLITE_DEBUG) && !defined(SQLITE_COVERAGE_TEST) +# define VVA(X) +#else +# define VVA(X) X +#endif + +/* Objects */ +typedef struct JsonString JsonString; +typedef struct JsonNode JsonNode; +typedef struct JsonParse JsonParse; +typedef struct JsonCleanup JsonCleanup; + +/* An instance of this object represents a JSON string +** under construction. Really, this is a generic string accumulator +** that can be and is used to create strings other than JSON. +*/ +struct JsonString { + sqlite3_context *pCtx; /* Function context - put error messages here */ + char *zBuf; /* Append JSON content here */ + u64 nAlloc; /* Bytes of storage available in zBuf[] */ + u64 nUsed; /* Bytes of zBuf[] currently used */ + u8 bStatic; /* True if zBuf is static space */ + u8 bErr; /* True if an error has been encountered */ + char zSpace[100]; /* Initial static space */ +}; + +/* A deferred cleanup task. A list of JsonCleanup objects might be +** run when the JsonParse object is destroyed. +*/ +struct JsonCleanup { + JsonCleanup *pJCNext; /* Next in a list */ + void (*xOp)(void*); /* Routine to run */ + void *pArg; /* Argument to xOp() */ +}; + +/* JSON type values +*/ +#define JSON_SUBST 0 /* Special edit node. Uses u.iPrev */ +#define JSON_NULL 1 +#define JSON_TRUE 2 +#define JSON_FALSE 3 +#define JSON_INT 4 +#define JSON_REAL 5 +#define JSON_STRING 6 +#define JSON_ARRAY 7 +#define JSON_OBJECT 8 + +/* The "subtype" set for JSON values */ +#define JSON_SUBTYPE 74 /* Ascii for "J" */ + +/* +** Names of the various JSON types: +*/ +static const char * const jsonType[] = { + "subst", + "null", "true", "false", "integer", "real", "text", "array", "object" +}; + +/* Bit values for the JsonNode.jnFlag field +*/ +#define JNODE_RAW 0x01 /* Content is raw, not JSON encoded */ +#define JNODE_ESCAPE 0x02 /* Content is text with \ escapes */ +#define JNODE_REMOVE 0x04 /* Do not output */ +#define JNODE_REPLACE 0x08 /* Target of a JSON_SUBST node */ +#define JNODE_APPEND 0x10 /* More ARRAY/OBJECT entries at u.iAppend */ +#define JNODE_LABEL 0x20 /* Is a label of an object */ +#define JNODE_JSON5 0x40 /* Node contains JSON5 enhancements */ + + +/* A single node of parsed JSON. An array of these nodes describes +** a parse of JSON + edits. +** +** Use the json_parse() SQL function (available when compiled with +** -DSQLITE_DEBUG) to see a dump of complete JsonParse objects, including +** a complete listing and decoding of the array of JsonNodes. +*/ +struct JsonNode { + u8 eType; /* One of the JSON_ type values */ + u8 jnFlags; /* JNODE flags */ + u8 eU; /* Which union element to use */ + u32 n; /* Bytes of content for INT, REAL or STRING + ** Number of sub-nodes for ARRAY and OBJECT + ** Node that SUBST applies to */ + union { + const char *zJContent; /* 1: Content for INT, REAL, and STRING */ + u32 iAppend; /* 2: More terms for ARRAY and OBJECT */ + u32 iKey; /* 3: Key for ARRAY objects in json_tree() */ + u32 iPrev; /* 4: Previous SUBST node, or 0 */ + } u; +}; + + +/* A parsed and possibly edited JSON string. Lifecycle: +** +** 1. JSON comes in and is parsed into an array aNode[]. The original +** JSON text is stored in zJson. +** +** 2. Zero or more changes are made (via json_remove() or json_replace() +** or similar) to the aNode[] array. +** +** 3. A new, edited and mimified JSON string is generated from aNode +** and stored in zAlt. The JsonParse object always owns zAlt. +** +** Step 1 always happens. Step 2 and 3 may or may not happen, depending +** on the operation. +** +** aNode[].u.zJContent entries typically point into zJson. Hence zJson +** must remain valid for the lifespan of the parse. For edits, +** aNode[].u.zJContent might point to malloced space other than zJson. +** Entries in pClup are responsible for freeing that extra malloced space. +** +** When walking the parse tree in aNode[], edits are ignored if useMod is +** false. +*/ +struct JsonParse { + u32 nNode; /* Number of slots of aNode[] used */ + u32 nAlloc; /* Number of slots of aNode[] allocated */ + JsonNode *aNode; /* Array of nodes containing the parse */ + char *zJson; /* Original JSON string (before edits) */ + char *zAlt; /* Revised and/or mimified JSON */ + u32 *aUp; /* Index of parent of each node */ + JsonCleanup *pClup;/* Cleanup operations prior to freeing this object */ + u16 iDepth; /* Nesting depth */ + u8 nErr; /* Number of errors seen */ + u8 oom; /* Set to true if out of memory */ + u8 bJsonIsRCStr; /* True if zJson is an RCStr */ + u8 hasNonstd; /* True if input uses non-standard features like JSON5 */ + u8 useMod; /* Actually use the edits contain inside aNode */ + u8 hasMod; /* aNode contains edits from the original zJson */ + u32 nJPRef; /* Number of references to this object */ + int nJson; /* Length of the zJson string in bytes */ + int nAlt; /* Length of alternative JSON string zAlt, in bytes */ + u32 iErr; /* Error location in zJson[] */ + u32 iSubst; /* Last JSON_SUBST entry in aNode[] */ + u32 iHold; /* Age of this entry in the cache for LRU replacement */ +}; + +/* +** Maximum nesting depth of JSON for this implementation. +** +** This limit is needed to avoid a stack overflow in the recursive +** descent parser. A depth of 1000 is far deeper than any sane JSON +** should go. Historical note: This limit was 2000 prior to version 3.42.0 +*/ +#define JSON_MAX_DEPTH 1000 + +/************************************************************************** +** Utility routines for dealing with JsonString objects +**************************************************************************/ + +/* Set the JsonString object to an empty string +*/ +static void jsonZero(JsonString *p){ + p->zBuf = p->zSpace; + p->nAlloc = sizeof(p->zSpace); + p->nUsed = 0; + p->bStatic = 1; +} + +/* Initialize the JsonString object +*/ +static void jsonInit(JsonString *p, sqlite3_context *pCtx){ + p->pCtx = pCtx; + p->bErr = 0; + jsonZero(p); +} + +/* Free all allocated memory and reset the JsonString object back to its +** initial state. +*/ +static void jsonReset(JsonString *p){ + if( !p->bStatic ) sqlite3RCStrUnref(p->zBuf); + jsonZero(p); +} + +/* Report an out-of-memory (OOM) condition +*/ +static void jsonOom(JsonString *p){ + p->bErr = 1; + sqlite3_result_error_nomem(p->pCtx); + jsonReset(p); +} + +/* Enlarge pJson->zBuf so that it can hold at least N more bytes. +** Return zero on success. Return non-zero on an OOM error +*/ +static int jsonGrow(JsonString *p, u32 N){ + u64 nTotal = NnAlloc ? p->nAlloc*2 : p->nAlloc+N+10; + char *zNew; + if( p->bStatic ){ + if( p->bErr ) return 1; + zNew = sqlite3RCStrNew(nTotal); + if( zNew==0 ){ + jsonOom(p); + return SQLITE_NOMEM; + } + memcpy(zNew, p->zBuf, (size_t)p->nUsed); + p->zBuf = zNew; + p->bStatic = 0; + }else{ + p->zBuf = sqlite3RCStrResize(p->zBuf, nTotal); + if( p->zBuf==0 ){ + p->bErr = 1; + jsonZero(p); + return SQLITE_NOMEM; + } + } + p->nAlloc = nTotal; + return SQLITE_OK; +} + +/* Append N bytes from zIn onto the end of the JsonString string. +*/ +static SQLITE_NOINLINE void jsonAppendExpand( + JsonString *p, + const char *zIn, + u32 N +){ + assert( N>0 ); + if( jsonGrow(p,N) ) return; + memcpy(p->zBuf+p->nUsed, zIn, N); + p->nUsed += N; +} +static void jsonAppendRaw(JsonString *p, const char *zIn, u32 N){ + if( N==0 ) return; + if( N+p->nUsed >= p->nAlloc ){ + jsonAppendExpand(p,zIn,N); + }else{ + memcpy(p->zBuf+p->nUsed, zIn, N); + p->nUsed += N; + } +} +static void jsonAppendRawNZ(JsonString *p, const char *zIn, u32 N){ + assert( N>0 ); + if( N+p->nUsed >= p->nAlloc ){ + jsonAppendExpand(p,zIn,N); + }else{ + memcpy(p->zBuf+p->nUsed, zIn, N); + p->nUsed += N; + } +} + + +/* Append formatted text (not to exceed N bytes) to the JsonString. +*/ +static void jsonPrintf(int N, JsonString *p, const char *zFormat, ...){ + va_list ap; + if( (p->nUsed + N >= p->nAlloc) && jsonGrow(p, N) ) return; + va_start(ap, zFormat); + sqlite3_vsnprintf(N, p->zBuf+p->nUsed, zFormat, ap); + va_end(ap); + p->nUsed += (int)strlen(p->zBuf+p->nUsed); +} + +/* Append a single character +*/ +static SQLITE_NOINLINE void jsonAppendCharExpand(JsonString *p, char c){ + if( jsonGrow(p,1) ) return; + p->zBuf[p->nUsed++] = c; +} +static void jsonAppendChar(JsonString *p, char c){ + if( p->nUsed>=p->nAlloc ){ + jsonAppendCharExpand(p,c); + }else{ + p->zBuf[p->nUsed++] = c; + } +} + +/* Try to force the string to be a zero-terminated RCStr string. +** +** Return true on success. Return false if an OOM prevents this +** from happening. +*/ +static int jsonForceRCStr(JsonString *p){ + jsonAppendChar(p, 0); + if( p->bErr ) return 0; + p->nUsed--; + if( p->bStatic==0 ) return 1; + p->nAlloc = 0; + p->nUsed++; + jsonGrow(p, p->nUsed); + p->nUsed--; + return p->bStatic==0; +} + + +/* Append a comma separator to the output buffer, if the previous +** character is not '[' or '{'. +*/ +static void jsonAppendSeparator(JsonString *p){ + char c; + if( p->nUsed==0 ) return; + c = p->zBuf[p->nUsed-1]; + if( c=='[' || c=='{' ) return; + jsonAppendChar(p, ','); +} + +/* Append the N-byte string in zIn to the end of the JsonString string +** under construction. Enclose the string in "..." and escape +** any double-quotes or backslash characters contained within the +** string. +*/ +static void jsonAppendString(JsonString *p, const char *zIn, u32 N){ + u32 i; + if( zIn==0 || ((N+p->nUsed+2 >= p->nAlloc) && jsonGrow(p,N+2)!=0) ) return; + p->zBuf[p->nUsed++] = '"'; + for(i=0; izBuf[p->nUsed++] = c; + }else if( c=='"' || c=='\\' ){ + json_simple_escape: + if( (p->nUsed+N+3-i > p->nAlloc) && jsonGrow(p,N+3-i)!=0 ) return; + p->zBuf[p->nUsed++] = '\\'; + p->zBuf[p->nUsed++] = c; + }else if( c=='\'' ){ + p->zBuf[p->nUsed++] = c; + }else{ + static const char aSpecial[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 'b', 't', 'n', 0, 'f', 'r', 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + assert( sizeof(aSpecial)==32 ); + assert( aSpecial['\b']=='b' ); + assert( aSpecial['\f']=='f' ); + assert( aSpecial['\n']=='n' ); + assert( aSpecial['\r']=='r' ); + assert( aSpecial['\t']=='t' ); + assert( c>=0 && cnUsed+N+7+i > p->nAlloc) && jsonGrow(p,N+7-i)!=0 ) return; + p->zBuf[p->nUsed++] = '\\'; + p->zBuf[p->nUsed++] = 'u'; + p->zBuf[p->nUsed++] = '0'; + p->zBuf[p->nUsed++] = '0'; + p->zBuf[p->nUsed++] = "0123456789abcdef"[c>>4]; + p->zBuf[p->nUsed++] = "0123456789abcdef"[c&0xf]; + } + } + p->zBuf[p->nUsed++] = '"'; + assert( p->nUsednAlloc ); +} + +/* +** The zIn[0..N] string is a JSON5 string literal. Append to p a translation +** of the string literal that standard JSON and that omits all JSON5 +** features. +*/ +static void jsonAppendNormalizedString(JsonString *p, const char *zIn, u32 N){ + u32 i; + jsonAppendChar(p, '"'); + zIn++; + N -= 2; + while( N>0 ){ + for(i=0; i0 ){ + jsonAppendRawNZ(p, zIn, i); + zIn += i; + N -= i; + if( N==0 ) break; + } + assert( zIn[0]=='\\' ); + switch( (u8)zIn[1] ){ + case '\'': + jsonAppendChar(p, '\''); + break; + case 'v': + jsonAppendRawNZ(p, "\\u0009", 6); + break; + case 'x': + jsonAppendRawNZ(p, "\\u00", 4); + jsonAppendRawNZ(p, &zIn[2], 2); + zIn += 2; + N -= 2; + break; + case '0': + jsonAppendRawNZ(p, "\\u0000", 6); + break; + case '\r': + if( zIn[2]=='\n' ){ + zIn++; + N--; + } + break; + case '\n': + break; + case 0xe2: + assert( N>=4 ); + assert( 0x80==(u8)zIn[2] ); + assert( 0xa8==(u8)zIn[3] || 0xa9==(u8)zIn[3] ); + zIn += 2; + N -= 2; + break; + default: + jsonAppendRawNZ(p, zIn, 2); + break; + } + zIn += 2; + N -= 2; + } + jsonAppendChar(p, '"'); +} + +/* +** The zIn[0..N] string is a JSON5 integer literal. Append to p a translation +** of the string literal that standard JSON and that omits all JSON5 +** features. +*/ +static void jsonAppendNormalizedInt(JsonString *p, const char *zIn, u32 N){ + if( zIn[0]=='+' ){ + zIn++; + N--; + }else if( zIn[0]=='-' ){ + jsonAppendChar(p, '-'); + zIn++; + N--; + } + if( zIn[0]=='0' && (zIn[1]=='x' || zIn[1]=='X') ){ + sqlite3_int64 i = 0; + int rc = sqlite3DecOrHexToI64(zIn, &i); + if( rc<=1 ){ + jsonPrintf(100,p,"%lld",i); + }else{ + assert( rc==2 ); + jsonAppendRawNZ(p, "9.0e999", 7); + } + return; + } + assert( N>0 ); + jsonAppendRawNZ(p, zIn, N); +} + +/* +** The zIn[0..N] string is a JSON5 real literal. Append to p a translation +** of the string literal that standard JSON and that omits all JSON5 +** features. +*/ +static void jsonAppendNormalizedReal(JsonString *p, const char *zIn, u32 N){ + u32 i; + if( zIn[0]=='+' ){ + zIn++; + N--; + }else if( zIn[0]=='-' ){ + jsonAppendChar(p, '-'); + zIn++; + N--; + } + if( zIn[0]=='.' ){ + jsonAppendChar(p, '0'); + } + for(i=0; i0 ){ + jsonAppendRawNZ(p, zIn, N); + } +} + + + +/* +** Append a function parameter value to the JSON string under +** construction. +*/ +static void jsonAppendValue( + JsonString *p, /* Append to this JSON string */ + sqlite3_value *pValue /* Value to append */ +){ + switch( sqlite3_value_type(pValue) ){ + case SQLITE_NULL: { + jsonAppendRawNZ(p, "null", 4); + break; + } + case SQLITE_FLOAT: { + jsonPrintf(100, p, "%!0.15g", sqlite3_value_double(pValue)); + break; + } + case SQLITE_INTEGER: { + const char *z = (const char*)sqlite3_value_text(pValue); + u32 n = (u32)sqlite3_value_bytes(pValue); + jsonAppendRaw(p, z, n); + break; + } + case SQLITE_TEXT: { + const char *z = (const char*)sqlite3_value_text(pValue); + u32 n = (u32)sqlite3_value_bytes(pValue); + if( sqlite3_value_subtype(pValue)==JSON_SUBTYPE ){ + jsonAppendRaw(p, z, n); + }else{ + jsonAppendString(p, z, n); + } + break; + } + default: { + if( p->bErr==0 ){ + sqlite3_result_error(p->pCtx, "JSON cannot hold BLOB values", -1); + p->bErr = 2; + jsonReset(p); + } + break; + } + } +} + + +/* Make the JSON in p the result of the SQL function. +** +** The JSON string is reset. +*/ +static void jsonResult(JsonString *p){ + if( p->bErr==0 ){ + if( p->bStatic ){ + sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed, + SQLITE_TRANSIENT, SQLITE_UTF8); + }else if( jsonForceRCStr(p) ){ + sqlite3RCStrRef(p->zBuf); + sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed, + (void(*)(void*))sqlite3RCStrUnref, + SQLITE_UTF8); + } + } + if( p->bErr==1 ){ + sqlite3_result_error_nomem(p->pCtx); + } + jsonReset(p); +} + +/************************************************************************** +** Utility routines for dealing with JsonNode and JsonParse objects +**************************************************************************/ + +/* +** Return the number of consecutive JsonNode slots need to represent +** the parsed JSON at pNode. The minimum answer is 1. For ARRAY and +** OBJECT types, the number might be larger. +** +** Appended elements are not counted. The value returned is the number +** by which the JsonNode counter should increment in order to go to the +** next peer value. +*/ +static u32 jsonNodeSize(JsonNode *pNode){ + return pNode->eType>=JSON_ARRAY ? pNode->n+1 : 1; +} + +/* +** Reclaim all memory allocated by a JsonParse object. But do not +** delete the JsonParse object itself. +*/ +static void jsonParseReset(JsonParse *pParse){ + while( pParse->pClup ){ + JsonCleanup *pTask = pParse->pClup; + pParse->pClup = pTask->pJCNext; + pTask->xOp(pTask->pArg); + sqlite3_free(pTask); + } + assert( pParse->nJPRef<=1 ); + if( pParse->aNode ){ + sqlite3_free(pParse->aNode); + pParse->aNode = 0; + } + pParse->nNode = 0; + pParse->nAlloc = 0; + if( pParse->aUp ){ + sqlite3_free(pParse->aUp); + pParse->aUp = 0; + } + if( pParse->bJsonIsRCStr ){ + sqlite3RCStrUnref(pParse->zJson); + pParse->zJson = 0; + pParse->bJsonIsRCStr = 0; + } + if( pParse->zAlt ){ + sqlite3RCStrUnref(pParse->zAlt); + pParse->zAlt = 0; + } +} + +/* +** Free a JsonParse object that was obtained from sqlite3_malloc(). +** +** Note that destroying JsonParse might call sqlite3RCStrUnref() to +** destroy the zJson value. The RCStr object might recursively invoke +** JsonParse to destroy this pParse object again. Take care to ensure +** that this recursive destructor sequence terminates harmlessly. +*/ +static void jsonParseFree(JsonParse *pParse){ + if( pParse->nJPRef>1 ){ + pParse->nJPRef--; + }else{ + jsonParseReset(pParse); + sqlite3_free(pParse); + } +} + +/* +** Add a cleanup task to the JsonParse object. +** +** If an OOM occurs, the cleanup operation happens immediately +** and this function returns SQLITE_NOMEM. +*/ +static int jsonParseAddCleanup( + JsonParse *pParse, /* Add the cleanup task to this parser */ + void(*xOp)(void*), /* The cleanup task */ + void *pArg /* Argument to the cleanup */ +){ + JsonCleanup *pTask = sqlite3_malloc64( sizeof(*pTask) ); + if( pTask==0 ){ + pParse->oom = 1; + xOp(pArg); + return SQLITE_ERROR; + } + pTask->pJCNext = pParse->pClup; + pParse->pClup = pTask; + pTask->xOp = xOp; + pTask->pArg = pArg; + return SQLITE_OK; +} + +/* +** Convert the JsonNode pNode into a pure JSON string and +** append to pOut. Subsubstructure is also included. Return +** the number of JsonNode objects that are encoded. +*/ +static void jsonRenderNode( + JsonParse *pParse, /* the complete parse of the JSON */ + JsonNode *pNode, /* The node to render */ + JsonString *pOut /* Write JSON here */ +){ + assert( pNode!=0 ); + while( (pNode->jnFlags & JNODE_REPLACE)!=0 && pParse->useMod ){ + u32 idx = (u32)(pNode - pParse->aNode); + u32 i = pParse->iSubst; + while( 1 /*exit-by-break*/ ){ + assert( inNode ); + assert( pParse->aNode[i].eType==JSON_SUBST ); + assert( pParse->aNode[i].eU==4 ); + assert( pParse->aNode[i].u.iPrevaNode[i].n==idx ){ + pNode = &pParse->aNode[i+1]; + break; + } + i = pParse->aNode[i].u.iPrev; + } + } + switch( pNode->eType ){ + default: { + assert( pNode->eType==JSON_NULL ); + jsonAppendRawNZ(pOut, "null", 4); + break; + } + case JSON_TRUE: { + jsonAppendRawNZ(pOut, "true", 4); + break; + } + case JSON_FALSE: { + jsonAppendRawNZ(pOut, "false", 5); + break; + } + case JSON_STRING: { + assert( pNode->eU==1 ); + if( pNode->jnFlags & JNODE_RAW ){ + if( pNode->jnFlags & JNODE_LABEL ){ + jsonAppendChar(pOut, '"'); + jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n); + jsonAppendChar(pOut, '"'); + }else{ + jsonAppendString(pOut, pNode->u.zJContent, pNode->n); + } + }else if( pNode->jnFlags & JNODE_JSON5 ){ + jsonAppendNormalizedString(pOut, pNode->u.zJContent, pNode->n); + }else{ + assert( pNode->n>0 ); + jsonAppendRawNZ(pOut, pNode->u.zJContent, pNode->n); + } + break; + } + case JSON_REAL: { + assert( pNode->eU==1 ); + if( pNode->jnFlags & JNODE_JSON5 ){ + jsonAppendNormalizedReal(pOut, pNode->u.zJContent, pNode->n); + }else{ + assert( pNode->n>0 ); + jsonAppendRawNZ(pOut, pNode->u.zJContent, pNode->n); + } + break; + } + case JSON_INT: { + assert( pNode->eU==1 ); + if( pNode->jnFlags & JNODE_JSON5 ){ + jsonAppendNormalizedInt(pOut, pNode->u.zJContent, pNode->n); + }else{ + assert( pNode->n>0 ); + jsonAppendRawNZ(pOut, pNode->u.zJContent, pNode->n); + } + break; + } + case JSON_ARRAY: { + u32 j = 1; + jsonAppendChar(pOut, '['); + for(;;){ + while( j<=pNode->n ){ + if( (pNode[j].jnFlags & JNODE_REMOVE)==0 || pParse->useMod==0 ){ + jsonAppendSeparator(pOut); + jsonRenderNode(pParse, &pNode[j], pOut); + } + j += jsonNodeSize(&pNode[j]); + } + if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; + if( pParse->useMod==0 ) break; + assert( pNode->eU==2 ); + pNode = &pParse->aNode[pNode->u.iAppend]; + j = 1; + } + jsonAppendChar(pOut, ']'); + break; + } + case JSON_OBJECT: { + u32 j = 1; + jsonAppendChar(pOut, '{'); + for(;;){ + while( j<=pNode->n ){ + if( (pNode[j+1].jnFlags & JNODE_REMOVE)==0 || pParse->useMod==0 ){ + jsonAppendSeparator(pOut); + jsonRenderNode(pParse, &pNode[j], pOut); + jsonAppendChar(pOut, ':'); + jsonRenderNode(pParse, &pNode[j+1], pOut); + } + j += 1 + jsonNodeSize(&pNode[j+1]); + } + if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; + if( pParse->useMod==0 ) break; + assert( pNode->eU==2 ); + pNode = &pParse->aNode[pNode->u.iAppend]; + j = 1; + } + jsonAppendChar(pOut, '}'); + break; + } + } +} + +/* +** Return a JsonNode and all its descendants as a JSON string. +*/ +static void jsonReturnJson( + JsonParse *pParse, /* The complete JSON */ + JsonNode *pNode, /* Node to return */ + sqlite3_context *pCtx, /* Return value for this function */ + int bGenerateAlt /* Also store the rendered text in zAlt */ +){ + JsonString s; + if( pParse->oom ){ + sqlite3_result_error_nomem(pCtx); + return; + } + if( pParse->nErr==0 ){ + jsonInit(&s, pCtx); + jsonRenderNode(pParse, pNode, &s); + if( bGenerateAlt && pParse->zAlt==0 && jsonForceRCStr(&s) ){ + pParse->zAlt = sqlite3RCStrRef(s.zBuf); + pParse->nAlt = s.nUsed; + } + jsonResult(&s); + sqlite3_result_subtype(pCtx, JSON_SUBTYPE); + } +} + +/* +** Translate a single byte of Hex into an integer. +** This routine only works if h really is a valid hexadecimal +** character: 0..9a..fA..F +*/ +static u8 jsonHexToInt(int h){ + assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') ); +#ifdef SQLITE_EBCDIC + h += 9*(1&~(h>>4)); +#else + h += 9*(1&(h>>6)); +#endif + return (u8)(h & 0xf); +} + +/* +** Convert a 4-byte hex string into an integer +*/ +static u32 jsonHexToInt4(const char *z){ + u32 v; + assert( sqlite3Isxdigit(z[0]) ); + assert( sqlite3Isxdigit(z[1]) ); + assert( sqlite3Isxdigit(z[2]) ); + assert( sqlite3Isxdigit(z[3]) ); + v = (jsonHexToInt(z[0])<<12) + + (jsonHexToInt(z[1])<<8) + + (jsonHexToInt(z[2])<<4) + + jsonHexToInt(z[3]); + return v; +} + +/* +** Make the JsonNode the return value of the function. +*/ +static void jsonReturn( + JsonParse *pParse, /* Complete JSON parse tree */ + JsonNode *pNode, /* Node to return */ + sqlite3_context *pCtx /* Return value for this function */ +){ + switch( pNode->eType ){ + default: { + assert( pNode->eType==JSON_NULL ); + sqlite3_result_null(pCtx); + break; + } + case JSON_TRUE: { + sqlite3_result_int(pCtx, 1); + break; + } + case JSON_FALSE: { + sqlite3_result_int(pCtx, 0); + break; + } + case JSON_INT: { + sqlite3_int64 i = 0; + int rc; + int bNeg = 0; + const char *z; + + assert( pNode->eU==1 ); + z = pNode->u.zJContent; + if( z[0]=='-' ){ z++; bNeg = 1; } + else if( z[0]=='+' ){ z++; } + rc = sqlite3DecOrHexToI64(z, &i); + if( rc<=1 ){ + sqlite3_result_int64(pCtx, bNeg ? -i : i); + }else if( rc==3 && bNeg ){ + sqlite3_result_int64(pCtx, SMALLEST_INT64); + }else{ + goto to_double; + } + break; + } + case JSON_REAL: { + double r; + const char *z; + assert( pNode->eU==1 ); + to_double: + z = pNode->u.zJContent; + sqlite3AtoF(z, &r, sqlite3Strlen30(z), SQLITE_UTF8); + sqlite3_result_double(pCtx, r); + break; + } + case JSON_STRING: { + if( pNode->jnFlags & JNODE_RAW ){ + assert( pNode->eU==1 ); + sqlite3_result_text(pCtx, pNode->u.zJContent, pNode->n, + SQLITE_TRANSIENT); + }else if( (pNode->jnFlags & JNODE_ESCAPE)==0 ){ + /* JSON formatted without any backslash-escapes */ + assert( pNode->eU==1 ); + sqlite3_result_text(pCtx, pNode->u.zJContent+1, pNode->n-2, + SQLITE_TRANSIENT); + }else{ + /* Translate JSON formatted string into raw text */ + u32 i; + u32 n = pNode->n; + const char *z; + char *zOut; + u32 j; + u32 nOut = n; + assert( pNode->eU==1 ); + z = pNode->u.zJContent; + zOut = sqlite3_malloc( nOut+1 ); + if( zOut==0 ){ + sqlite3_result_error_nomem(pCtx); + break; + } + for(i=1, j=0; i>6)); + zOut[j++] = 0x80 | (v&0x3f); + }else{ + u32 vlo; + if( (v&0xfc00)==0xd800 + && i>18); + zOut[j++] = 0x80 | ((v>>12)&0x3f); + zOut[j++] = 0x80 | ((v>>6)&0x3f); + zOut[j++] = 0x80 | (v&0x3f); + }else{ + zOut[j++] = 0xe0 | (v>>12); + zOut[j++] = 0x80 | ((v>>6)&0x3f); + zOut[j++] = 0x80 | (v&0x3f); + } + } + continue; + }else if( c=='b' ){ + c = '\b'; + }else if( c=='f' ){ + c = '\f'; + }else if( c=='n' ){ + c = '\n'; + }else if( c=='r' ){ + c = '\r'; + }else if( c=='t' ){ + c = '\t'; + }else if( c=='v' ){ + c = '\v'; + }else if( c=='\'' || c=='"' || c=='/' || c=='\\' ){ + /* pass through unchanged */ + }else if( c=='0' ){ + c = 0; + }else if( c=='x' ){ + c = (jsonHexToInt(z[i+1])<<4) | jsonHexToInt(z[i+2]); + i += 2; + }else if( c=='\r' && z[i+1]=='\n' ){ + i++; + continue; + }else if( 0xe2==(u8)c ){ + assert( 0x80==(u8)z[i+1] ); + assert( 0xa8==(u8)z[i+2] || 0xa9==(u8)z[i+2] ); + i += 2; + continue; + }else{ + continue; + } + } /* end if( c=='\\' ) */ + zOut[j++] = c; + } /* end for() */ + zOut[j] = 0; + sqlite3_result_text(pCtx, zOut, j, sqlite3_free); + } + break; + } + case JSON_ARRAY: + case JSON_OBJECT: { + jsonReturnJson(pParse, pNode, pCtx, 0); + break; + } + } +} + +/* Forward reference */ +static int jsonParseAddNode(JsonParse*,u32,u32,const char*); + +/* +** A macro to hint to the compiler that a function should not be +** inlined. +*/ +#if defined(__GNUC__) +# define JSON_NOINLINE __attribute__((noinline)) +#elif defined(_MSC_VER) && _MSC_VER>=1310 +# define JSON_NOINLINE __declspec(noinline) +#else +# define JSON_NOINLINE +#endif + + +/* +** Add a single node to pParse->aNode after first expanding the +** size of the aNode array. Return the index of the new node. +** +** If an OOM error occurs, set pParse->oom and return -1. +*/ +static JSON_NOINLINE int jsonParseAddNodeExpand( + JsonParse *pParse, /* Append the node to this object */ + u32 eType, /* Node type */ + u32 n, /* Content size or sub-node count */ + const char *zContent /* Content */ +){ + u32 nNew; + JsonNode *pNew; + assert( pParse->nNode>=pParse->nAlloc ); + if( pParse->oom ) return -1; + nNew = pParse->nAlloc*2 + 10; + pNew = sqlite3_realloc64(pParse->aNode, sizeof(JsonNode)*nNew); + if( pNew==0 ){ + pParse->oom = 1; + return -1; + } + pParse->nAlloc = sqlite3_msize(pNew)/sizeof(JsonNode); + pParse->aNode = pNew; + assert( pParse->nNodenAlloc ); + return jsonParseAddNode(pParse, eType, n, zContent); +} + +/* +** Create a new JsonNode instance based on the arguments and append that +** instance to the JsonParse. Return the index in pParse->aNode[] of the +** new node, or -1 if a memory allocation fails. +*/ +static int jsonParseAddNode( + JsonParse *pParse, /* Append the node to this object */ + u32 eType, /* Node type */ + u32 n, /* Content size or sub-node count */ + const char *zContent /* Content */ +){ + JsonNode *p; + assert( pParse->aNode!=0 || pParse->nNode>=pParse->nAlloc ); + if( pParse->nNode>=pParse->nAlloc ){ + return jsonParseAddNodeExpand(pParse, eType, n, zContent); + } + assert( pParse->aNode!=0 ); + p = &pParse->aNode[pParse->nNode]; + assert( p!=0 ); + p->eType = (u8)(eType & 0xff); + p->jnFlags = (u8)(eType >> 8); + VVA( p->eU = zContent ? 1 : 0 ); + p->n = n; + p->u.zJContent = zContent; + return pParse->nNode++; +} + +/* +** Add an array of new nodes to the current pParse->aNode array. +** Return the index of the first node added. +** +** If an OOM error occurs, set pParse->oom. +*/ +static void jsonParseAddNodeArray( + JsonParse *pParse, /* Append the node to this object */ + JsonNode *aNode, /* Array of nodes to add */ + u32 nNode /* Number of elements in aNew */ +){ + assert( aNode!=0 ); + assert( nNode>=1 ); + if( pParse->nNode + nNode > pParse->nAlloc ){ + u32 nNew = pParse->nNode + nNode; + JsonNode *aNew = sqlite3_realloc64(pParse->aNode, nNew*sizeof(JsonNode)); + if( aNew==0 ){ + pParse->oom = 1; + return; + } + pParse->nAlloc = sqlite3_msize(aNew)/sizeof(JsonNode); + pParse->aNode = aNew; + } + memcpy(&pParse->aNode[pParse->nNode], aNode, nNode*sizeof(JsonNode)); + pParse->nNode += nNode; +} + +/* +** Add a new JSON_SUBST node. The node immediately following +** this new node will be the substitute content for iNode. +*/ +static int jsonParseAddSubstNode( + JsonParse *pParse, /* Add the JSON_SUBST here */ + u32 iNode /* References this node */ +){ + int idx = jsonParseAddNode(pParse, JSON_SUBST, iNode, 0); + if( pParse->oom ) return -1; + pParse->aNode[iNode].jnFlags |= JNODE_REPLACE; + pParse->aNode[idx].eU = 4; + pParse->aNode[idx].u.iPrev = pParse->iSubst; + pParse->iSubst = idx; + pParse->hasMod = 1; + pParse->useMod = 1; + return idx; +} + +/* +** Return true if z[] begins with 2 (or more) hexadecimal digits +*/ +static int jsonIs2Hex(const char *z){ + return sqlite3Isxdigit(z[0]) && sqlite3Isxdigit(z[1]); +} + +/* +** Return true if z[] begins with 4 (or more) hexadecimal digits +*/ +static int jsonIs4Hex(const char *z){ + return jsonIs2Hex(z) && jsonIs2Hex(&z[2]); +} + +/* +** Return the number of bytes of JSON5 whitespace at the beginning of +** the input string z[]. +** +** JSON5 whitespace consists of any of the following characters: +** +** Unicode UTF-8 Name +** U+0009 09 horizontal tab +** U+000a 0a line feed +** U+000b 0b vertical tab +** U+000c 0c form feed +** U+000d 0d carriage return +** U+0020 20 space +** U+00a0 c2 a0 non-breaking space +** U+1680 e1 9a 80 ogham space mark +** U+2000 e2 80 80 en quad +** U+2001 e2 80 81 em quad +** U+2002 e2 80 82 en space +** U+2003 e2 80 83 em space +** U+2004 e2 80 84 three-per-em space +** U+2005 e2 80 85 four-per-em space +** U+2006 e2 80 86 six-per-em space +** U+2007 e2 80 87 figure space +** U+2008 e2 80 88 punctuation space +** U+2009 e2 80 89 thin space +** U+200a e2 80 8a hair space +** U+2028 e2 80 a8 line separator +** U+2029 e2 80 a9 paragraph separator +** U+202f e2 80 af narrow no-break space (NNBSP) +** U+205f e2 81 9f medium mathematical space (MMSP) +** U+3000 e3 80 80 ideographical space +** U+FEFF ef bb bf byte order mark +** +** In addition, comments between '/', '*' and '*', '/' and +** from '/', '/' to end-of-line are also considered to be whitespace. +*/ +static int json5Whitespace(const char *zIn){ + int n = 0; + const u8 *z = (u8*)zIn; + while( 1 /*exit by "goto whitespace_done"*/ ){ + switch( z[n] ){ + case 0x09: + case 0x0a: + case 0x0b: + case 0x0c: + case 0x0d: + case 0x20: { + n++; + break; + } + case '/': { + if( z[n+1]=='*' && z[n+2]!=0 ){ + int j; + for(j=n+3; z[j]!='/' || z[j-1]!='*'; j++){ + if( z[j]==0 ) goto whitespace_done; + } + n = j+1; + break; + }else if( z[n+1]=='/' ){ + int j; + char c; + for(j=n+2; (c = z[j])!=0; j++){ + if( c=='\n' || c=='\r' ) break; + if( 0xe2==(u8)c && 0x80==(u8)z[j+1] + && (0xa8==(u8)z[j+2] || 0xa9==(u8)z[j+2]) + ){ + j += 2; + break; + } + } + n = j; + if( z[n] ) n++; + break; + } + goto whitespace_done; + } + case 0xc2: { + if( z[n+1]==0xa0 ){ + n += 2; + break; + } + goto whitespace_done; + } + case 0xe1: { + if( z[n+1]==0x9a && z[n+2]==0x80 ){ + n += 3; + break; + } + goto whitespace_done; + } + case 0xe2: { + if( z[n+1]==0x80 ){ + u8 c = z[n+2]; + if( c<0x80 ) goto whitespace_done; + if( c<=0x8a || c==0xa8 || c==0xa9 || c==0xaf ){ + n += 3; + break; + } + }else if( z[n+1]==0x81 && z[n+2]==0x9f ){ + n += 3; + break; + } + goto whitespace_done; + } + case 0xe3: { + if( z[n+1]==0x80 && z[n+2]==0x80 ){ + n += 3; + break; + } + goto whitespace_done; + } + case 0xef: { + if( z[n+1]==0xbb && z[n+2]==0xbf ){ + n += 3; + break; + } + goto whitespace_done; + } + default: { + goto whitespace_done; + } + } + } + whitespace_done: + return n; +} + +/* +** Extra floating-point literals to allow in JSON. +*/ +static const struct NanInfName { + char c1; + char c2; + char n; + char eType; + char nRepl; + char *zMatch; + char *zRepl; +} aNanInfName[] = { + { 'i', 'I', 3, JSON_REAL, 7, "inf", "9.0e999" }, + { 'i', 'I', 8, JSON_REAL, 7, "infinity", "9.0e999" }, + { 'n', 'N', 3, JSON_NULL, 4, "NaN", "null" }, + { 'q', 'Q', 4, JSON_NULL, 4, "QNaN", "null" }, + { 's', 'S', 4, JSON_NULL, 4, "SNaN", "null" }, +}; + +/* +** Parse a single JSON value which begins at pParse->zJson[i]. Return the +** index of the first character past the end of the value parsed. +** +** Special return values: +** +** 0 End of input +** -1 Syntax error +** -2 '}' seen +** -3 ']' seen +** -4 ',' seen +** -5 ':' seen +*/ +static int jsonParseValue(JsonParse *pParse, u32 i){ + char c; + u32 j; + int iThis; + int x; + JsonNode *pNode; + const char *z = pParse->zJson; +json_parse_restart: + switch( (u8)z[i] ){ + case '{': { + /* Parse object */ + iThis = jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); + if( iThis<0 ) return -1; + if( ++pParse->iDepth > JSON_MAX_DEPTH ){ + pParse->iErr = i; + return -1; + } + for(j=i+1;;j++){ + u32 nNode = pParse->nNode; + x = jsonParseValue(pParse, j); + if( x<=0 ){ + if( x==(-2) ){ + j = pParse->iErr; + if( pParse->nNode!=(u32)iThis+1 ) pParse->hasNonstd = 1; + break; + } + j += json5Whitespace(&z[j]); + if( sqlite3JsonId1(z[j]) + || (z[j]=='\\' && z[j+1]=='u' && jsonIs4Hex(&z[j+2])) + ){ + int k = j+1; + while( (sqlite3JsonId2(z[k]) && json5Whitespace(&z[k])==0) + || (z[k]=='\\' && z[k+1]=='u' && jsonIs4Hex(&z[k+2])) + ){ + k++; + } + jsonParseAddNode(pParse, JSON_STRING | (JNODE_RAW<<8), k-j, &z[j]); + pParse->hasNonstd = 1; + x = k; + }else{ + if( x!=-1 ) pParse->iErr = j; + return -1; + } + } + if( pParse->oom ) return -1; + pNode = &pParse->aNode[nNode]; + if( pNode->eType!=JSON_STRING ){ + pParse->iErr = j; + return -1; + } + pNode->jnFlags |= JNODE_LABEL; + j = x; + if( z[j]==':' ){ + j++; + }else{ + if( fast_isspace(z[j]) ){ + do{ j++; }while( fast_isspace(z[j]) ); + if( z[j]==':' ){ + j++; + goto parse_object_value; + } + } + x = jsonParseValue(pParse, j); + if( x!=(-5) ){ + if( x!=(-1) ) pParse->iErr = j; + return -1; + } + j = pParse->iErr+1; + } + parse_object_value: + x = jsonParseValue(pParse, j); + if( x<=0 ){ + if( x!=(-1) ) pParse->iErr = j; + return -1; + } + j = x; + if( z[j]==',' ){ + continue; + }else if( z[j]=='}' ){ + break; + }else{ + if( fast_isspace(z[j]) ){ + do{ j++; }while( fast_isspace(z[j]) ); + if( z[j]==',' ){ + continue; + }else if( z[j]=='}' ){ + break; + } + } + x = jsonParseValue(pParse, j); + if( x==(-4) ){ + j = pParse->iErr; + continue; + } + if( x==(-2) ){ + j = pParse->iErr; + break; + } + } + pParse->iErr = j; + return -1; + } + pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; + pParse->iDepth--; + return j+1; + } + case '[': { + /* Parse array */ + iThis = jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); + if( iThis<0 ) return -1; + if( ++pParse->iDepth > JSON_MAX_DEPTH ){ + pParse->iErr = i; + return -1; + } + memset(&pParse->aNode[iThis].u, 0, sizeof(pParse->aNode[iThis].u)); + for(j=i+1;;j++){ + x = jsonParseValue(pParse, j); + if( x<=0 ){ + if( x==(-3) ){ + j = pParse->iErr; + if( pParse->nNode!=(u32)iThis+1 ) pParse->hasNonstd = 1; + break; + } + if( x!=(-1) ) pParse->iErr = j; + return -1; + } + j = x; + if( z[j]==',' ){ + continue; + }else if( z[j]==']' ){ + break; + }else{ + if( fast_isspace(z[j]) ){ + do{ j++; }while( fast_isspace(z[j]) ); + if( z[j]==',' ){ + continue; + }else if( z[j]==']' ){ + break; + } + } + x = jsonParseValue(pParse, j); + if( x==(-4) ){ + j = pParse->iErr; + continue; + } + if( x==(-3) ){ + j = pParse->iErr; + break; + } + } + pParse->iErr = j; + return -1; + } + pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; + pParse->iDepth--; + return j+1; + } + case '\'': { + u8 jnFlags; + char cDelim; + pParse->hasNonstd = 1; + jnFlags = JNODE_JSON5; + goto parse_string; + case '"': + /* Parse string */ + jnFlags = 0; + parse_string: + cDelim = z[i]; + for(j=i+1; 1; j++){ + if( jsonIsOk[(unsigned char)z[j]] ) continue; + c = z[j]; + if( c==cDelim ){ + break; + }else if( c=='\\' ){ + c = z[++j]; + if( c=='"' || c=='\\' || c=='/' || c=='b' || c=='f' + || c=='n' || c=='r' || c=='t' + || (c=='u' && jsonIs4Hex(&z[j+1])) ){ + jnFlags |= JNODE_ESCAPE; + }else if( c=='\'' || c=='0' || c=='v' || c=='\n' + || (0xe2==(u8)c && 0x80==(u8)z[j+1] + && (0xa8==(u8)z[j+2] || 0xa9==(u8)z[j+2])) + || (c=='x' && jsonIs2Hex(&z[j+1])) ){ + jnFlags |= (JNODE_ESCAPE|JNODE_JSON5); + pParse->hasNonstd = 1; + }else if( c=='\r' ){ + if( z[j+1]=='\n' ) j++; + jnFlags |= (JNODE_ESCAPE|JNODE_JSON5); + pParse->hasNonstd = 1; + }else{ + pParse->iErr = j; + return -1; + } + }else if( c<=0x1f ){ + /* Control characters are not allowed in strings */ + pParse->iErr = j; + return -1; + } + } + jsonParseAddNode(pParse, JSON_STRING | (jnFlags<<8), j+1-i, &z[i]); + return j+1; + } + case 't': { + if( strncmp(z+i,"true",4)==0 && !sqlite3Isalnum(z[i+4]) ){ + jsonParseAddNode(pParse, JSON_TRUE, 0, 0); + return i+4; + } + pParse->iErr = i; + return -1; + } + case 'f': { + if( strncmp(z+i,"false",5)==0 && !sqlite3Isalnum(z[i+5]) ){ + jsonParseAddNode(pParse, JSON_FALSE, 0, 0); + return i+5; + } + pParse->iErr = i; + return -1; + } + case '+': { + u8 seenDP, seenE, jnFlags; + pParse->hasNonstd = 1; + jnFlags = JNODE_JSON5; + goto parse_number; + case '.': + if( sqlite3Isdigit(z[i+1]) ){ + pParse->hasNonstd = 1; + jnFlags = JNODE_JSON5; + seenE = 0; + seenDP = JSON_REAL; + goto parse_number_2; + } + pParse->iErr = i; + return -1; + case '-': + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + /* Parse number */ + jnFlags = 0; + parse_number: + seenDP = JSON_INT; + seenE = 0; + assert( '-' < '0' ); + assert( '+' < '0' ); + assert( '.' < '0' ); + c = z[i]; + + if( c<='0' ){ + if( c=='0' ){ + if( (z[i+1]=='x' || z[i+1]=='X') && sqlite3Isxdigit(z[i+2]) ){ + assert( seenDP==JSON_INT ); + pParse->hasNonstd = 1; + jnFlags |= JNODE_JSON5; + for(j=i+3; sqlite3Isxdigit(z[j]); j++){} + goto parse_number_finish; + }else if( sqlite3Isdigit(z[i+1]) ){ + pParse->iErr = i+1; + return -1; + } + }else{ + if( !sqlite3Isdigit(z[i+1]) ){ + /* JSON5 allows for "+Infinity" and "-Infinity" using exactly + ** that case. SQLite also allows these in any case and it allows + ** "+inf" and "-inf". */ + if( (z[i+1]=='I' || z[i+1]=='i') + && sqlite3StrNICmp(&z[i+1], "inf",3)==0 + ){ + pParse->hasNonstd = 1; + if( z[i]=='-' ){ + jsonParseAddNode(pParse, JSON_REAL, 8, "-9.0e999"); + }else{ + jsonParseAddNode(pParse, JSON_REAL, 7, "9.0e999"); + } + return i + (sqlite3StrNICmp(&z[i+4],"inity",5)==0 ? 9 : 4); + } + if( z[i+1]=='.' ){ + pParse->hasNonstd = 1; + jnFlags |= JNODE_JSON5; + goto parse_number_2; + } + pParse->iErr = i; + return -1; + } + if( z[i+1]=='0' ){ + if( sqlite3Isdigit(z[i+2]) ){ + pParse->iErr = i+1; + return -1; + }else if( (z[i+2]=='x' || z[i+2]=='X') && sqlite3Isxdigit(z[i+3]) ){ + pParse->hasNonstd = 1; + jnFlags |= JNODE_JSON5; + for(j=i+4; sqlite3Isxdigit(z[j]); j++){} + goto parse_number_finish; + } + } + } + } + parse_number_2: + for(j=i+1;; j++){ + c = z[j]; + if( sqlite3Isdigit(c) ) continue; + if( c=='.' ){ + if( seenDP==JSON_REAL ){ + pParse->iErr = j; + return -1; + } + seenDP = JSON_REAL; + continue; + } + if( c=='e' || c=='E' ){ + if( z[j-1]<'0' ){ + if( ALWAYS(z[j-1]=='.') && ALWAYS(j-2>=i) && sqlite3Isdigit(z[j-2]) ){ + pParse->hasNonstd = 1; + jnFlags |= JNODE_JSON5; + }else{ + pParse->iErr = j; + return -1; + } + } + if( seenE ){ + pParse->iErr = j; + return -1; + } + seenDP = JSON_REAL; + seenE = 1; + c = z[j+1]; + if( c=='+' || c=='-' ){ + j++; + c = z[j+1]; + } + if( c<'0' || c>'9' ){ + pParse->iErr = j; + return -1; + } + continue; + } + break; + } + if( z[j-1]<'0' ){ + if( ALWAYS(z[j-1]=='.') && ALWAYS(j-2>=i) && sqlite3Isdigit(z[j-2]) ){ + pParse->hasNonstd = 1; + jnFlags |= JNODE_JSON5; + }else{ + pParse->iErr = j; + return -1; + } + } + parse_number_finish: + jsonParseAddNode(pParse, seenDP | (jnFlags<<8), j - i, &z[i]); + return j; + } + case '}': { + pParse->iErr = i; + return -2; /* End of {...} */ + } + case ']': { + pParse->iErr = i; + return -3; /* End of [...] */ + } + case ',': { + pParse->iErr = i; + return -4; /* List separator */ + } + case ':': { + pParse->iErr = i; + return -5; /* Object label/value separator */ + } + case 0: { + return 0; /* End of file */ + } + case 0x09: + case 0x0a: + case 0x0d: + case 0x20: { + do{ + i++; + }while( fast_isspace(z[i]) ); + goto json_parse_restart; + } + case 0x0b: + case 0x0c: + case '/': + case 0xc2: + case 0xe1: + case 0xe2: + case 0xe3: + case 0xef: { + j = json5Whitespace(&z[i]); + if( j>0 ){ + i += j; + pParse->hasNonstd = 1; + goto json_parse_restart; + } + pParse->iErr = i; + return -1; + } + case 'n': { + if( strncmp(z+i,"null",4)==0 && !sqlite3Isalnum(z[i+4]) ){ + jsonParseAddNode(pParse, JSON_NULL, 0, 0); + return i+4; + } + /* fall-through into the default case that checks for NaN */ + } + default: { + u32 k; + int nn; + c = z[i]; + for(k=0; khasNonstd = 1; + return i + nn; + } + pParse->iErr = i; + return -1; /* Syntax error */ + } + } /* End switch(z[i]) */ +} + +/* +** Parse a complete JSON string. Return 0 on success or non-zero if there +** are any errors. If an error occurs, free all memory held by pParse, +** but not pParse itself. +** +** pParse must be initialized to an empty parse object prior to calling +** this routine. +*/ +static int jsonParse( + JsonParse *pParse, /* Initialize and fill this JsonParse object */ + sqlite3_context *pCtx /* Report errors here */ +){ + int i; + const char *zJson = pParse->zJson; + i = jsonParseValue(pParse, 0); + if( pParse->oom ) i = -1; + if( i>0 ){ + assert( pParse->iDepth==0 ); + while( fast_isspace(zJson[i]) ) i++; + if( zJson[i] ){ + i += json5Whitespace(&zJson[i]); + if( zJson[i] ){ + jsonParseReset(pParse); + return 1; + } + pParse->hasNonstd = 1; + } + } + if( i<=0 ){ + if( pCtx!=0 ){ + if( pParse->oom ){ + sqlite3_result_error_nomem(pCtx); + }else{ + sqlite3_result_error(pCtx, "malformed JSON", -1); + } + } + jsonParseReset(pParse); + return 1; + } + return 0; +} + + +/* Mark node i of pParse as being a child of iParent. Call recursively +** to fill in all the descendants of node i. +*/ +static void jsonParseFillInParentage(JsonParse *pParse, u32 i, u32 iParent){ + JsonNode *pNode = &pParse->aNode[i]; + u32 j; + pParse->aUp[i] = iParent; + switch( pNode->eType ){ + case JSON_ARRAY: { + for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j)){ + jsonParseFillInParentage(pParse, i+j, i); + } + break; + } + case JSON_OBJECT: { + for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j+1)+1){ + pParse->aUp[i+j] = i; + jsonParseFillInParentage(pParse, i+j+1, i); + } + break; + } + default: { + break; + } + } +} + +/* +** Compute the parentage of all nodes in a completed parse. +*/ +static int jsonParseFindParents(JsonParse *pParse){ + u32 *aUp; + assert( pParse->aUp==0 ); + aUp = pParse->aUp = sqlite3_malloc64( sizeof(u32)*pParse->nNode ); + if( aUp==0 ){ + pParse->oom = 1; + return SQLITE_NOMEM; + } + jsonParseFillInParentage(pParse, 0, 0); + return SQLITE_OK; +} + +/* +** Magic number used for the JSON parse cache in sqlite3_get_auxdata() +*/ +#define JSON_CACHE_ID (-429938) /* First cache entry */ +#define JSON_CACHE_SZ 4 /* Max number of cache entries */ + +/* +** Obtain a complete parse of the JSON found in the pJson argument +** +** Use the sqlite3_get_auxdata() cache to find a preexisting parse +** if it is available. If the cache is not available or if it +** is no longer valid, parse the JSON again and return the new parse. +** Also register the new parse so that it will be available for +** future sqlite3_get_auxdata() calls. +** +** If an error occurs and pErrCtx!=0 then report the error on pErrCtx +** and return NULL. +** +** The returned pointer (if it is not NULL) is owned by the cache in +** most cases, not the caller. The caller does NOT need to invoke +** jsonParseFree(), in most cases. +** +** Except, if an error occurs and pErrCtx==0 then return the JsonParse +** object with JsonParse.nErr non-zero and the caller will own the JsonParse +** object. In that case, it will be the responsibility of the caller to +** invoke jsonParseFree(). To summarize: +** +** pErrCtx!=0 || p->nErr==0 ==> Return value p is owned by the +** cache. Call does not need to +** free it. +** +** pErrCtx==0 && p->nErr!=0 ==> Return value is owned by the caller +** and so the caller must free it. +*/ +static JsonParse *jsonParseCached( + sqlite3_context *pCtx, /* Context to use for cache search */ + sqlite3_value *pJson, /* Function param containing JSON text */ + sqlite3_context *pErrCtx, /* Write parse errors here if not NULL */ + int bUnedited /* No prior edits allowed */ +){ + char *zJson = (char*)sqlite3_value_text(pJson); + int nJson = sqlite3_value_bytes(pJson); + JsonParse *p; + JsonParse *pMatch = 0; + int iKey; + int iMinKey = 0; + u32 iMinHold = 0xffffffff; + u32 iMaxHold = 0; + int bJsonRCStr; + + if( zJson==0 ) return 0; + for(iKey=0; iKeynJson==nJson + && (p->hasMod==0 || bUnedited==0) + && (p->zJson==zJson || memcmp(p->zJson,zJson,nJson)==0) + ){ + p->nErr = 0; + p->useMod = 0; + pMatch = p; + }else + if( pMatch==0 + && p->zAlt!=0 + && bUnedited==0 + && p->nAlt==nJson + && memcmp(p->zAlt, zJson, nJson)==0 + ){ + p->nErr = 0; + p->useMod = 1; + pMatch = p; + }else if( p->iHoldiHold; + iMinKey = iKey; + } + if( p->iHold>iMaxHold ){ + iMaxHold = p->iHold; + } + } + if( pMatch ){ + /* The input JSON text was found in the cache. Use the preexisting + ** parse of this JSON */ + pMatch->nErr = 0; + pMatch->iHold = iMaxHold+1; + assert( pMatch->nJPRef>0 ); /* pMatch is owned by the cache */ + return pMatch; + } + + /* The input JSON was not found anywhere in the cache. We will need + ** to parse it ourselves and generate a new JsonParse object. + */ + bJsonRCStr = sqlite3ValueIsOfClass(pJson,(void(*)(void*))sqlite3RCStrUnref); + p = sqlite3_malloc64( sizeof(*p) + (bJsonRCStr ? 0 : nJson+1) ); + if( p==0 ){ + sqlite3_result_error_nomem(pCtx); + return 0; + } + memset(p, 0, sizeof(*p)); + if( bJsonRCStr ){ + p->zJson = sqlite3RCStrRef(zJson); + p->bJsonIsRCStr = 1; + }else{ + p->zJson = (char*)&p[1]; + memcpy(p->zJson, zJson, nJson+1); + } + p->nJPRef = 1; + if( jsonParse(p, pErrCtx) ){ + if( pErrCtx==0 ){ + p->nErr = 1; + assert( p->nJPRef==1 ); /* Caller will own the new JsonParse object p */ + return p; + } + jsonParseFree(p); + return 0; + } + p->nJson = nJson; + p->iHold = iMaxHold+1; + /* Transfer ownership of the new JsonParse to the cache */ + sqlite3_set_auxdata(pCtx, JSON_CACHE_ID+iMinKey, p, + (void(*)(void*))jsonParseFree); + return (JsonParse*)sqlite3_get_auxdata(pCtx, JSON_CACHE_ID+iMinKey); +} + +/* +** Compare the OBJECT label at pNode against zKey,nKey. Return true on +** a match. +*/ +static int jsonLabelCompare(const JsonNode *pNode, const char *zKey, u32 nKey){ + assert( pNode->eU==1 ); + if( pNode->jnFlags & JNODE_RAW ){ + if( pNode->n!=nKey ) return 0; + return strncmp(pNode->u.zJContent, zKey, nKey)==0; + }else{ + if( pNode->n!=nKey+2 ) return 0; + return strncmp(pNode->u.zJContent+1, zKey, nKey)==0; + } +} +static int jsonSameLabel(const JsonNode *p1, const JsonNode *p2){ + if( p1->jnFlags & JNODE_RAW ){ + return jsonLabelCompare(p2, p1->u.zJContent, p1->n); + }else if( p2->jnFlags & JNODE_RAW ){ + return jsonLabelCompare(p1, p2->u.zJContent, p2->n); + }else{ + return p1->n==p2->n && strncmp(p1->u.zJContent,p2->u.zJContent,p1->n)==0; + } +} + +/* forward declaration */ +static JsonNode *jsonLookupAppend(JsonParse*,const char*,int*,const char**); + +/* +** Search along zPath to find the node specified. Return a pointer +** to that node, or NULL if zPath is malformed or if there is no such +** node. +** +** If pApnd!=0, then try to append new nodes to complete zPath if it is +** possible to do so and if no existing node corresponds to zPath. If +** new nodes are appended *pApnd is set to 1. +*/ +static JsonNode *jsonLookupStep( + JsonParse *pParse, /* The JSON to search */ + u32 iRoot, /* Begin the search at this node */ + const char *zPath, /* The path to search */ + int *pApnd, /* Append nodes to complete path if not NULL */ + const char **pzErr /* Make *pzErr point to any syntax error in zPath */ +){ + u32 i, j, nKey; + const char *zKey; + JsonNode *pRoot; + if( pParse->oom ) return 0; + pRoot = &pParse->aNode[iRoot]; + if( pRoot->jnFlags & (JNODE_REPLACE|JNODE_REMOVE) && pParse->useMod ){ + while( (pRoot->jnFlags & JNODE_REPLACE)!=0 ){ + u32 idx = (u32)(pRoot - pParse->aNode); + i = pParse->iSubst; + while( 1 /*exit-by-break*/ ){ + assert( inNode ); + assert( pParse->aNode[i].eType==JSON_SUBST ); + assert( pParse->aNode[i].eU==4 ); + assert( pParse->aNode[i].u.iPrevaNode[i].n==idx ){ + pRoot = &pParse->aNode[i+1]; + iRoot = i+1; + break; + } + i = pParse->aNode[i].u.iPrev; + } + } + if( pRoot->jnFlags & JNODE_REMOVE ){ + return 0; + } + } + if( zPath[0]==0 ) return pRoot; + if( zPath[0]=='.' ){ + if( pRoot->eType!=JSON_OBJECT ) return 0; + zPath++; + if( zPath[0]=='"' ){ + zKey = zPath + 1; + for(i=1; zPath[i] && zPath[i]!='"'; i++){} + nKey = i-1; + if( zPath[i] ){ + i++; + }else{ + *pzErr = zPath; + return 0; + } + testcase( nKey==0 ); + }else{ + zKey = zPath; + for(i=0; zPath[i] && zPath[i]!='.' && zPath[i]!='['; i++){} + nKey = i; + if( nKey==0 ){ + *pzErr = zPath; + return 0; + } + } + j = 1; + for(;;){ + while( j<=pRoot->n ){ + if( jsonLabelCompare(pRoot+j, zKey, nKey) ){ + return jsonLookupStep(pParse, iRoot+j+1, &zPath[i], pApnd, pzErr); + } + j++; + j += jsonNodeSize(&pRoot[j]); + } + if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; + if( pParse->useMod==0 ) break; + assert( pRoot->eU==2 ); + iRoot = pRoot->u.iAppend; + pRoot = &pParse->aNode[iRoot]; + j = 1; + } + if( pApnd ){ + u32 iStart, iLabel; + JsonNode *pNode; + assert( pParse->useMod ); + iStart = jsonParseAddNode(pParse, JSON_OBJECT, 2, 0); + iLabel = jsonParseAddNode(pParse, JSON_STRING, nKey, zKey); + zPath += i; + pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); + if( pParse->oom ) return 0; + if( pNode ){ + pRoot = &pParse->aNode[iRoot]; + assert( pRoot->eU==0 ); + pRoot->u.iAppend = iStart; + pRoot->jnFlags |= JNODE_APPEND; + VVA( pRoot->eU = 2 ); + pParse->aNode[iLabel].jnFlags |= JNODE_RAW; + } + return pNode; + } + }else if( zPath[0]=='[' ){ + i = 0; + j = 1; + while( sqlite3Isdigit(zPath[j]) ){ + i = i*10 + zPath[j] - '0'; + j++; + } + if( j<2 || zPath[j]!=']' ){ + if( zPath[1]=='#' ){ + JsonNode *pBase = pRoot; + int iBase = iRoot; + if( pRoot->eType!=JSON_ARRAY ) return 0; + for(;;){ + while( j<=pBase->n ){ + if( (pBase[j].jnFlags & JNODE_REMOVE)==0 || pParse->useMod==0 ) i++; + j += jsonNodeSize(&pBase[j]); + } + if( (pBase->jnFlags & JNODE_APPEND)==0 ) break; + if( pParse->useMod==0 ) break; + assert( pBase->eU==2 ); + iBase = pBase->u.iAppend; + pBase = &pParse->aNode[iBase]; + j = 1; + } + j = 2; + if( zPath[2]=='-' && sqlite3Isdigit(zPath[3]) ){ + unsigned int x = 0; + j = 3; + do{ + x = x*10 + zPath[j] - '0'; + j++; + }while( sqlite3Isdigit(zPath[j]) ); + if( x>i ) return 0; + i -= x; + } + if( zPath[j]!=']' ){ + *pzErr = zPath; + return 0; + } + }else{ + *pzErr = zPath; + return 0; + } + } + if( pRoot->eType!=JSON_ARRAY ) return 0; + zPath += j + 1; + j = 1; + for(;;){ + while( j<=pRoot->n + && (i>0 || ((pRoot[j].jnFlags & JNODE_REMOVE)!=0 && pParse->useMod)) + ){ + if( (pRoot[j].jnFlags & JNODE_REMOVE)==0 || pParse->useMod==0 ) i--; + j += jsonNodeSize(&pRoot[j]); + } + if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; + if( pParse->useMod==0 ) break; + assert( pRoot->eU==2 ); + iRoot = pRoot->u.iAppend; + pRoot = &pParse->aNode[iRoot]; + j = 1; + } + if( j<=pRoot->n ){ + return jsonLookupStep(pParse, iRoot+j, zPath, pApnd, pzErr); + } + if( i==0 && pApnd ){ + u32 iStart; + JsonNode *pNode; + assert( pParse->useMod ); + iStart = jsonParseAddNode(pParse, JSON_ARRAY, 1, 0); + pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); + if( pParse->oom ) return 0; + if( pNode ){ + pRoot = &pParse->aNode[iRoot]; + assert( pRoot->eU==0 ); + pRoot->u.iAppend = iStart; + pRoot->jnFlags |= JNODE_APPEND; + VVA( pRoot->eU = 2 ); + } + return pNode; + } + }else{ + *pzErr = zPath; + } + return 0; +} + +/* +** Append content to pParse that will complete zPath. Return a pointer +** to the inserted node, or return NULL if the append fails. +*/ +static JsonNode *jsonLookupAppend( + JsonParse *pParse, /* Append content to the JSON parse */ + const char *zPath, /* Description of content to append */ + int *pApnd, /* Set this flag to 1 */ + const char **pzErr /* Make this point to any syntax error */ +){ + *pApnd = 1; + if( zPath[0]==0 ){ + jsonParseAddNode(pParse, JSON_NULL, 0, 0); + return pParse->oom ? 0 : &pParse->aNode[pParse->nNode-1]; + } + if( zPath[0]=='.' ){ + jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); + }else if( strncmp(zPath,"[0]",3)==0 ){ + jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); + }else{ + return 0; + } + if( pParse->oom ) return 0; + return jsonLookupStep(pParse, pParse->nNode-1, zPath, pApnd, pzErr); +} + +/* +** Return the text of a syntax error message on a JSON path. Space is +** obtained from sqlite3_malloc(). +*/ +static char *jsonPathSyntaxError(const char *zErr){ + return sqlite3_mprintf("JSON path error near '%q'", zErr); +} + +/* +** Do a node lookup using zPath. Return a pointer to the node on success. +** Return NULL if not found or if there is an error. +** +** On an error, write an error message into pCtx and increment the +** pParse->nErr counter. +** +** If pApnd!=NULL then try to append missing nodes and set *pApnd = 1 if +** nodes are appended. +*/ +static JsonNode *jsonLookup( + JsonParse *pParse, /* The JSON to search */ + const char *zPath, /* The path to search */ + int *pApnd, /* Append nodes to complete path if not NULL */ + sqlite3_context *pCtx /* Report errors here, if not NULL */ +){ + const char *zErr = 0; + JsonNode *pNode = 0; + char *zMsg; + + if( zPath==0 ) return 0; + if( zPath[0]!='$' ){ + zErr = zPath; + goto lookup_err; + } + zPath++; + pNode = jsonLookupStep(pParse, 0, zPath, pApnd, &zErr); + if( zErr==0 ) return pNode; + +lookup_err: + pParse->nErr++; + assert( zErr!=0 && pCtx!=0 ); + zMsg = jsonPathSyntaxError(zErr); + if( zMsg ){ + sqlite3_result_error(pCtx, zMsg, -1); + sqlite3_free(zMsg); + }else{ + sqlite3_result_error_nomem(pCtx); + } + return 0; +} + + +/* +** Report the wrong number of arguments for json_insert(), json_replace() +** or json_set(). +*/ +static void jsonWrongNumArgs( + sqlite3_context *pCtx, + const char *zFuncName +){ + char *zMsg = sqlite3_mprintf("json_%s() needs an odd number of arguments", + zFuncName); + sqlite3_result_error(pCtx, zMsg, -1); + sqlite3_free(zMsg); +} + +/* +** Mark all NULL entries in the Object passed in as JNODE_REMOVE. +*/ +static void jsonRemoveAllNulls(JsonNode *pNode){ + int i, n; + assert( pNode->eType==JSON_OBJECT ); + n = pNode->n; + for(i=2; i<=n; i += jsonNodeSize(&pNode[i])+1){ + switch( pNode[i].eType ){ + case JSON_NULL: + pNode[i].jnFlags |= JNODE_REMOVE; + break; + case JSON_OBJECT: + jsonRemoveAllNulls(&pNode[i]); + break; + } + } +} + + +/**************************************************************************** +** SQL functions used for testing and debugging +****************************************************************************/ + +#if SQLITE_DEBUG +/* +** Print N node entries. +*/ +static void jsonDebugPrintNodeEntries( + JsonNode *aNode, /* First node entry to print */ + int N /* Number of node entries to print */ +){ + int i; + for(i=0; iaNode, p->nNode); +} +static void jsonDebugPrintNode(JsonNode *pNode){ + jsonDebugPrintNodeEntries(pNode, jsonNodeSize(pNode)); +} +#else + /* The usual case */ +# define jsonDebugPrintNode(X) +# define jsonDebugPrintParse(X) +#endif + +#ifdef SQLITE_DEBUG +/* +** SQL function: json_parse(JSON) +** +** Parse JSON using jsonParseCached(). Then print a dump of that +** parse on standard output. Return the mimified JSON result, just +** like the json() function. +*/ +static void jsonParseFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *p; /* The parse */ + + assert( argc==1 ); + p = jsonParseCached(ctx, argv[0], ctx, 0); + if( p==0 ) return; + printf("nNode = %u\n", p->nNode); + printf("nAlloc = %u\n", p->nAlloc); + printf("nJson = %d\n", p->nJson); + printf("nAlt = %d\n", p->nAlt); + printf("nErr = %u\n", p->nErr); + printf("oom = %u\n", p->oom); + printf("hasNonstd = %u\n", p->hasNonstd); + printf("useMod = %u\n", p->useMod); + printf("hasMod = %u\n", p->hasMod); + printf("nJPRef = %u\n", p->nJPRef); + printf("iSubst = %u\n", p->iSubst); + printf("iHold = %u\n", p->iHold); + jsonDebugPrintNodeEntries(p->aNode, p->nNode); + jsonReturnJson(p, p->aNode, ctx, 1); +} + +/* +** The json_test1(JSON) function return true (1) if the input is JSON +** text generated by another json function. It returns (0) if the input +** is not known to be JSON. +*/ +static void jsonTest1Func( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + UNUSED_PARAMETER(argc); + sqlite3_result_int(ctx, sqlite3_value_subtype(argv[0])==JSON_SUBTYPE); +} +#endif /* SQLITE_DEBUG */ + +/**************************************************************************** +** Scalar SQL function implementations +****************************************************************************/ + +/* +** Implementation of the json_QUOTE(VALUE) function. Return a JSON value +** corresponding to the SQL value input. Mostly this means putting +** double-quotes around strings and returning the unquoted string "null" +** when given a NULL input. +*/ +static void jsonQuoteFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonString jx; + UNUSED_PARAMETER(argc); + + jsonInit(&jx, ctx); + jsonAppendValue(&jx, argv[0]); + jsonResult(&jx); + sqlite3_result_subtype(ctx, JSON_SUBTYPE); +} + +/* +** Implementation of the json_array(VALUE,...) function. Return a JSON +** array that contains all values given in arguments. Or if any argument +** is a BLOB, throw an error. +*/ +static void jsonArrayFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + int i; + JsonString jx; + + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '['); + for(i=0; inNode ); + if( argc==2 ){ + const char *zPath = (const char*)sqlite3_value_text(argv[1]); + pNode = jsonLookup(p, zPath, 0, ctx); + }else{ + pNode = p->aNode; + } + if( pNode==0 ){ + return; + } + if( pNode->eType==JSON_ARRAY ){ + while( 1 /*exit-by-break*/ ){ + for(i=1; i<=pNode->n; n++){ + i += jsonNodeSize(&pNode[i]); + } + if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; + if( p->useMod==0 ) break; + assert( pNode->eU==2 ); + pNode = &p->aNode[pNode->u.iAppend]; + } + } + sqlite3_result_int64(ctx, n); +} + +/* +** Bit values for the flags passed into jsonExtractFunc() or +** jsonSetFunc() via the user-data value. +*/ +#define JSON_JSON 0x01 /* Result is always JSON */ +#define JSON_SQL 0x02 /* Result is always SQL */ +#define JSON_ABPATH 0x03 /* Allow abbreviated JSON path specs */ +#define JSON_ISSET 0x04 /* json_set(), not json_insert() */ + +/* +** json_extract(JSON, PATH, ...) +** "->"(JSON,PATH) +** "->>"(JSON,PATH) +** +** Return the element described by PATH. Return NULL if that PATH element +** is not found. +** +** If JSON_JSON is set or if more that one PATH argument is supplied then +** always return a JSON representation of the result. If JSON_SQL is set, +** then always return an SQL representation of the result. If neither flag +** is present and argc==2, then return JSON for objects and arrays and SQL +** for all other values. +** +** When multiple PATH arguments are supplied, the result is a JSON array +** containing the result of each PATH. +** +** Abbreviated JSON path expressions are allows if JSON_ABPATH, for +** compatibility with PG. +*/ +static void jsonExtractFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *p; /* The parse */ + JsonNode *pNode; + const char *zPath; + int flags = SQLITE_PTR_TO_INT(sqlite3_user_data(ctx)); + JsonString jx; + + if( argc<2 ) return; + p = jsonParseCached(ctx, argv[0], ctx, 0); + if( p==0 ) return; + if( argc==2 ){ + /* With a single PATH argument */ + zPath = (const char*)sqlite3_value_text(argv[1]); + if( zPath==0 ) return; + if( flags & JSON_ABPATH ){ + if( zPath[0]!='$' || (zPath[1]!='.' && zPath[1]!='[' && zPath[1]!=0) ){ + /* The -> and ->> operators accept abbreviated PATH arguments. This + ** is mostly for compatibility with PostgreSQL, but also for + ** convenience. + ** + ** NUMBER ==> $[NUMBER] // PG compatible + ** LABEL ==> $.LABEL // PG compatible + ** [NUMBER] ==> $[NUMBER] // Not PG. Purely for convenience + */ + jsonInit(&jx, ctx); + if( sqlite3Isdigit(zPath[0]) ){ + jsonAppendRawNZ(&jx, "$[", 2); + jsonAppendRaw(&jx, zPath, (int)strlen(zPath)); + jsonAppendRawNZ(&jx, "]", 2); + }else{ + jsonAppendRawNZ(&jx, "$.", 1 + (zPath[0]!='[')); + jsonAppendRaw(&jx, zPath, (int)strlen(zPath)); + jsonAppendChar(&jx, 0); + } + pNode = jx.bErr ? 0 : jsonLookup(p, jx.zBuf, 0, ctx); + jsonReset(&jx); + }else{ + pNode = jsonLookup(p, zPath, 0, ctx); + } + if( pNode ){ + if( flags & JSON_JSON ){ + jsonReturnJson(p, pNode, ctx, 0); + }else{ + jsonReturn(p, pNode, ctx); + sqlite3_result_subtype(ctx, 0); + } + } + }else{ + pNode = jsonLookup(p, zPath, 0, ctx); + if( p->nErr==0 && pNode ) jsonReturn(p, pNode, ctx); + } + }else{ + /* Two or more PATH arguments results in a JSON array with each + ** element of the array being the value selected by one of the PATHs */ + int i; + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '['); + for(i=1; inErr ) break; + jsonAppendSeparator(&jx); + if( pNode ){ + jsonRenderNode(p, pNode, &jx); + }else{ + jsonAppendRawNZ(&jx, "null", 4); + } + } + if( i==argc ){ + jsonAppendChar(&jx, ']'); + jsonResult(&jx); + sqlite3_result_subtype(ctx, JSON_SUBTYPE); + } + jsonReset(&jx); + } +} + +/* This is the RFC 7396 MergePatch algorithm. +*/ +static JsonNode *jsonMergePatch( + JsonParse *pParse, /* The JSON parser that contains the TARGET */ + u32 iTarget, /* Node of the TARGET in pParse */ + JsonNode *pPatch /* The PATCH */ +){ + u32 i, j; + u32 iRoot; + JsonNode *pTarget; + if( pPatch->eType!=JSON_OBJECT ){ + return pPatch; + } + assert( iTargetnNode ); + pTarget = &pParse->aNode[iTarget]; + assert( (pPatch->jnFlags & JNODE_APPEND)==0 ); + if( pTarget->eType!=JSON_OBJECT ){ + jsonRemoveAllNulls(pPatch); + return pPatch; + } + iRoot = iTarget; + for(i=1; in; i += jsonNodeSize(&pPatch[i+1])+1){ + u32 nKey; + const char *zKey; + assert( pPatch[i].eType==JSON_STRING ); + assert( pPatch[i].jnFlags & JNODE_LABEL ); + assert( pPatch[i].eU==1 ); + nKey = pPatch[i].n; + zKey = pPatch[i].u.zJContent; + for(j=1; jn; j += jsonNodeSize(&pTarget[j+1])+1 ){ + assert( pTarget[j].eType==JSON_STRING ); + assert( pTarget[j].jnFlags & JNODE_LABEL ); + if( jsonSameLabel(&pPatch[i], &pTarget[j]) ){ + if( pTarget[j+1].jnFlags & (JNODE_REMOVE|JNODE_REPLACE) ) break; + if( pPatch[i+1].eType==JSON_NULL ){ + pTarget[j+1].jnFlags |= JNODE_REMOVE; + }else{ + JsonNode *pNew = jsonMergePatch(pParse, iTarget+j+1, &pPatch[i+1]); + if( pNew==0 ) return 0; + if( pNew!=&pParse->aNode[iTarget+j+1] ){ + jsonParseAddSubstNode(pParse, iTarget+j+1); + jsonParseAddNodeArray(pParse, pNew, jsonNodeSize(pNew)); + } + pTarget = &pParse->aNode[iTarget]; + } + break; + } + } + if( j>=pTarget->n && pPatch[i+1].eType!=JSON_NULL ){ + int iStart; + JsonNode *pApnd; + u32 nApnd; + iStart = jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); + jsonParseAddNode(pParse, JSON_STRING, nKey, zKey); + pApnd = &pPatch[i+1]; + if( pApnd->eType==JSON_OBJECT ) jsonRemoveAllNulls(pApnd); + nApnd = jsonNodeSize(pApnd); + jsonParseAddNodeArray(pParse, pApnd, jsonNodeSize(pApnd)); + if( pParse->oom ) return 0; + pParse->aNode[iStart].n = 1+nApnd; + pParse->aNode[iRoot].jnFlags |= JNODE_APPEND; + pParse->aNode[iRoot].u.iAppend = iStart; + VVA( pParse->aNode[iRoot].eU = 2 ); + iRoot = iStart; + pTarget = &pParse->aNode[iTarget]; + } + } + return pTarget; +} + +/* +** Implementation of the json_mergepatch(JSON1,JSON2) function. Return a JSON +** object that is the result of running the RFC 7396 MergePatch() algorithm +** on the two arguments. +*/ +static void jsonPatchFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *pX; /* The JSON that is being patched */ + JsonParse *pY; /* The patch */ + JsonNode *pResult; /* The result of the merge */ + + UNUSED_PARAMETER(argc); + pX = jsonParseCached(ctx, argv[0], ctx, 1); + if( pX==0 ) return; + assert( pX->hasMod==0 ); + pX->hasMod = 1; + pY = jsonParseCached(ctx, argv[1], ctx, 1); + if( pY==0 ) return; + pX->useMod = 1; + pY->useMod = 1; + pResult = jsonMergePatch(pX, 0, pY->aNode); + assert( pResult!=0 || pX->oom ); + if( pResult && pX->oom==0 ){ + jsonDebugPrintParse(pX); + jsonDebugPrintNode(pResult); + jsonReturnJson(pX, pResult, ctx, 0); + }else{ + sqlite3_result_error_nomem(ctx); + } +} + + +/* +** Implementation of the json_object(NAME,VALUE,...) function. Return a JSON +** object that contains all name/value given in arguments. Or if any name +** is not a string or if any value is a BLOB, throw an error. +*/ +static void jsonObjectFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + int i; + JsonString jx; + const char *z; + u32 n; + + if( argc&1 ){ + sqlite3_result_error(ctx, "json_object() requires an even number " + "of arguments", -1); + return; + } + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '{'); + for(i=0; i1); + if( pParse==0 ) return; + for(i=1; i<(u32)argc; i++){ + zPath = (const char*)sqlite3_value_text(argv[i]); + if( zPath==0 ) goto remove_done; + pNode = jsonLookup(pParse, zPath, 0, ctx); + if( pParse->nErr ) goto remove_done; + if( pNode ){ + pNode->jnFlags |= JNODE_REMOVE; + pParse->hasMod = 1; + pParse->useMod = 1; + } + } + if( (pParse->aNode[0].jnFlags & JNODE_REMOVE)==0 ){ + jsonReturnJson(pParse, pParse->aNode, ctx, 1); + } +remove_done: + jsonDebugPrintParse(p); +} + +/* +** Substitute the value at iNode with the pValue parameter. +*/ +static void jsonReplaceNode( + sqlite3_context *pCtx, + JsonParse *p, + int iNode, + sqlite3_value *pValue +){ + int idx = jsonParseAddSubstNode(p, iNode); + if( idx<=0 ){ + assert( p->oom ); + return; + } + switch( sqlite3_value_type(pValue) ){ + case SQLITE_NULL: { + jsonParseAddNode(p, JSON_NULL, 0, 0); + break; + } + case SQLITE_FLOAT: { + char *z = sqlite3_mprintf("%!0.15g", sqlite3_value_double(pValue)); + int n; + if( z==0 ){ + p->oom = 1; + break; + } + n = sqlite3Strlen30(z); + jsonParseAddNode(p, JSON_REAL, n, z); + jsonParseAddCleanup(p, sqlite3_free, z); + break; + } + case SQLITE_INTEGER: { + char *z = sqlite3_mprintf("%lld", sqlite3_value_int64(pValue)); + int n; + if( z==0 ){ + p->oom = 1; + break; + } + n = sqlite3Strlen30(z); + jsonParseAddNode(p, JSON_INT, n, z); + jsonParseAddCleanup(p, sqlite3_free, z); + + break; + } + case SQLITE_TEXT: { + const char *z = (const char*)sqlite3_value_text(pValue); + u32 n = (u32)sqlite3_value_bytes(pValue); + if( z==0 ){ + p->oom = 1; + break; + } + if( sqlite3_value_subtype(pValue)!=JSON_SUBTYPE ){ + char *zCopy = sqlite3DbStrDup(0, z); + int k; + if( zCopy ){ + jsonParseAddCleanup(p, sqlite3_free, zCopy); + }else{ + p->oom = 1; + sqlite3_result_error_nomem(pCtx); + } + k = jsonParseAddNode(p, JSON_STRING, n, zCopy); + assert( k>0 || p->oom ); + if( p->oom==0 ) p->aNode[k].jnFlags |= JNODE_RAW; + }else{ + JsonParse *pPatch = jsonParseCached(pCtx, pValue, pCtx, 1); + if( pPatch==0 ){ + p->oom = 1; + break; + } + jsonParseAddNodeArray(p, pPatch->aNode, pPatch->nNode); + /* The nodes copied out of pPatch and into p likely contain + ** u.zJContent pointers into pPatch->zJson. So preserve the + ** content of pPatch until p is destroyed. */ + assert( pPatch->nJPRef>=1 ); + pPatch->nJPRef++; + jsonParseAddCleanup(p, (void(*)(void*))jsonParseFree, pPatch); + } + break; + } + default: { + jsonParseAddNode(p, JSON_NULL, 0, 0); + sqlite3_result_error(pCtx, "JSON cannot hold BLOB values", -1); + p->nErr++; + break; + } + } +} + +/* +** json_replace(JSON, PATH, VALUE, ...) +** +** Replace the value at PATH with VALUE. If PATH does not already exist, +** this routine is a no-op. If JSON or PATH is malformed, throw an error. +*/ +static void jsonReplaceFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *pParse; /* The parse */ + JsonNode *pNode; + const char *zPath; + u32 i; + + if( argc<1 ) return; + if( (argc&1)==0 ) { + jsonWrongNumArgs(ctx, "replace"); + return; + } + pParse = jsonParseCached(ctx, argv[0], ctx, argc>1); + if( pParse==0 ) return; + for(i=1; i<(u32)argc; i+=2){ + zPath = (const char*)sqlite3_value_text(argv[i]); + pParse->useMod = 1; + pNode = jsonLookup(pParse, zPath, 0, ctx); + if( pParse->nErr ) goto replace_err; + if( pNode ){ + jsonReplaceNode(ctx, pParse, (u32)(pNode - pParse->aNode), argv[i+1]); + } + } + jsonReturnJson(pParse, pParse->aNode, ctx, 1); +replace_err: + jsonDebugPrintParse(pParse); +} + + +/* +** json_set(JSON, PATH, VALUE, ...) +** +** Set the value at PATH to VALUE. Create the PATH if it does not already +** exist. Overwrite existing values that do exist. +** If JSON or PATH is malformed, throw an error. +** +** json_insert(JSON, PATH, VALUE, ...) +** +** Create PATH and initialize it to VALUE. If PATH already exists, this +** routine is a no-op. If JSON or PATH is malformed, throw an error. +*/ +static void jsonSetFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *pParse; /* The parse */ + JsonNode *pNode; + const char *zPath; + u32 i; + int bApnd; + int bIsSet = sqlite3_user_data(ctx)!=0; + + if( argc<1 ) return; + if( (argc&1)==0 ) { + jsonWrongNumArgs(ctx, bIsSet ? "set" : "insert"); + return; + } + pParse = jsonParseCached(ctx, argv[0], ctx, argc>1); + if( pParse==0 ) return; + for(i=1; i<(u32)argc; i+=2){ + zPath = (const char*)sqlite3_value_text(argv[i]); + bApnd = 0; + pParse->useMod = 1; + pNode = jsonLookup(pParse, zPath, &bApnd, ctx); + if( pParse->oom ){ + sqlite3_result_error_nomem(ctx); + goto jsonSetDone; + }else if( pParse->nErr ){ + goto jsonSetDone; + }else if( pNode && (bApnd || bIsSet) ){ + jsonReplaceNode(ctx, pParse, (u32)(pNode - pParse->aNode), argv[i+1]); + } + } + jsonDebugPrintParse(pParse); + jsonReturnJson(pParse, pParse->aNode, ctx, 1); + +jsonSetDone: + /* no cleanup required */; +} + +/* +** json_type(JSON) +** json_type(JSON, PATH) +** +** Return the top-level "type" of a JSON string. json_type() raises an +** error if either the JSON or PATH inputs are not well-formed. +*/ +static void jsonTypeFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *p; /* The parse */ + const char *zPath; + JsonNode *pNode; + + p = jsonParseCached(ctx, argv[0], ctx, 0); + if( p==0 ) return; + if( argc==2 ){ + zPath = (const char*)sqlite3_value_text(argv[1]); + pNode = jsonLookup(p, zPath, 0, ctx); + }else{ + pNode = p->aNode; + } + if( pNode ){ + sqlite3_result_text(ctx, jsonType[pNode->eType], -1, SQLITE_STATIC); + } +} + +/* +** json_valid(JSON) +** +** Return 1 if JSON is a well-formed canonical JSON string according +** to RFC-7159. Return 0 otherwise. +*/ +static void jsonValidFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *p; /* The parse */ + UNUSED_PARAMETER(argc); + if( sqlite3_value_type(argv[0])==SQLITE_NULL ){ +#ifdef SQLITE_LEGACY_JSON_VALID + /* Incorrect legacy behavior was to return FALSE for a NULL input */ + sqlite3_result_int(ctx, 0); +#endif + return; + } + p = jsonParseCached(ctx, argv[0], 0, 0); + if( p==0 || p->oom ){ + sqlite3_result_error_nomem(ctx); + sqlite3_free(p); + }else{ + sqlite3_result_int(ctx, p->nErr==0 && (p->hasNonstd==0 || p->useMod)); + if( p->nErr ) jsonParseFree(p); + } +} + +/* +** json_error_position(JSON) +** +** If the argument is not an interpretable JSON string, then return the 1-based +** character position at which the parser first recognized that the input +** was in error. The left-most character is 1. If the string is valid +** JSON, then return 0. +** +** Note that json_valid() is only true for strictly conforming canonical JSON. +** But this routine returns zero if the input contains extension. Thus: +** +** (1) If the input X is strictly conforming canonical JSON: +** +** json_valid(X) returns true +** json_error_position(X) returns 0 +** +** (2) If the input X is JSON but it includes extension (such as JSON5) that +** are not part of RFC-8259: +** +** json_valid(X) returns false +** json_error_position(X) return 0 +** +** (3) If the input X cannot be interpreted as JSON even taking extensions +** into account: +** +** json_valid(X) return false +** json_error_position(X) returns 1 or more +*/ +static void jsonErrorFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse *p; /* The parse */ + UNUSED_PARAMETER(argc); + if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; + p = jsonParseCached(ctx, argv[0], 0, 0); + if( p==0 || p->oom ){ + sqlite3_result_error_nomem(ctx); + sqlite3_free(p); + }else if( p->nErr==0 ){ + sqlite3_result_int(ctx, 0); + }else{ + int n = 1; + u32 i; + const char *z = (const char*)sqlite3_value_text(argv[0]); + for(i=0; iiErr && ALWAYS(z[i]); i++){ + if( (z[i]&0xc0)!=0x80 ) n++; + } + sqlite3_result_int(ctx, n); + jsonParseFree(p); + } +} + + +/**************************************************************************** +** Aggregate SQL function implementations +****************************************************************************/ +/* +** json_group_array(VALUE) +** +** Return a JSON array composed of all values in the aggregate. +*/ +static void jsonArrayStep( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonString *pStr; + UNUSED_PARAMETER(argc); + pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr)); + if( pStr ){ + if( pStr->zBuf==0 ){ + jsonInit(pStr, ctx); + jsonAppendChar(pStr, '['); + }else if( pStr->nUsed>1 ){ + jsonAppendChar(pStr, ','); + } + pStr->pCtx = ctx; + jsonAppendValue(pStr, argv[0]); + } +} +static void jsonArrayCompute(sqlite3_context *ctx, int isFinal){ + JsonString *pStr; + pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0); + if( pStr ){ + pStr->pCtx = ctx; + jsonAppendChar(pStr, ']'); + if( pStr->bErr ){ + if( pStr->bErr==1 ) sqlite3_result_error_nomem(ctx); + assert( pStr->bStatic ); + }else if( isFinal ){ + sqlite3_result_text(ctx, pStr->zBuf, (int)pStr->nUsed, + pStr->bStatic ? SQLITE_TRANSIENT : + (void(*)(void*))sqlite3RCStrUnref); + pStr->bStatic = 1; + }else{ + sqlite3_result_text(ctx, pStr->zBuf, (int)pStr->nUsed, SQLITE_TRANSIENT); + pStr->nUsed--; + } + }else{ + sqlite3_result_text(ctx, "[]", 2, SQLITE_STATIC); + } + sqlite3_result_subtype(ctx, JSON_SUBTYPE); +} +static void jsonArrayValue(sqlite3_context *ctx){ + jsonArrayCompute(ctx, 0); +} +static void jsonArrayFinal(sqlite3_context *ctx){ + jsonArrayCompute(ctx, 1); +} + +#ifndef SQLITE_OMIT_WINDOWFUNC +/* +** This method works for both json_group_array() and json_group_object(). +** It works by removing the first element of the group by searching forward +** to the first comma (",") that is not within a string and deleting all +** text through that comma. +*/ +static void jsonGroupInverse( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + unsigned int i; + int inStr = 0; + int nNest = 0; + char *z; + char c; + JsonString *pStr; + UNUSED_PARAMETER(argc); + UNUSED_PARAMETER(argv); + pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0); +#ifdef NEVER + /* pStr is always non-NULL since jsonArrayStep() or jsonObjectStep() will + ** always have been called to initialize it */ + if( NEVER(!pStr) ) return; +#endif + z = pStr->zBuf; + for(i=1; inUsed && ((c = z[i])!=',' || inStr || nNest); i++){ + if( c=='"' ){ + inStr = !inStr; + }else if( c=='\\' ){ + i++; + }else if( !inStr ){ + if( c=='{' || c=='[' ) nNest++; + if( c=='}' || c==']' ) nNest--; + } + } + if( inUsed ){ + pStr->nUsed -= i; + memmove(&z[1], &z[i+1], (size_t)pStr->nUsed-1); + z[pStr->nUsed] = 0; + }else{ + pStr->nUsed = 1; + } +} +#else +# define jsonGroupInverse 0 +#endif + + +/* +** json_group_obj(NAME,VALUE) +** +** Return a JSON object composed of all names and values in the aggregate. +*/ +static void jsonObjectStep( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonString *pStr; + const char *z; + u32 n; + UNUSED_PARAMETER(argc); + pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr)); + if( pStr ){ + if( pStr->zBuf==0 ){ + jsonInit(pStr, ctx); + jsonAppendChar(pStr, '{'); + }else if( pStr->nUsed>1 ){ + jsonAppendChar(pStr, ','); + } + pStr->pCtx = ctx; + z = (const char*)sqlite3_value_text(argv[0]); + n = (u32)sqlite3_value_bytes(argv[0]); + jsonAppendString(pStr, z, n); + jsonAppendChar(pStr, ':'); + jsonAppendValue(pStr, argv[1]); + } +} +static void jsonObjectCompute(sqlite3_context *ctx, int isFinal){ + JsonString *pStr; + pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0); + if( pStr ){ + jsonAppendChar(pStr, '}'); + if( pStr->bErr ){ + if( pStr->bErr==1 ) sqlite3_result_error_nomem(ctx); + assert( pStr->bStatic ); + }else if( isFinal ){ + sqlite3_result_text(ctx, pStr->zBuf, (int)pStr->nUsed, + pStr->bStatic ? SQLITE_TRANSIENT : + (void(*)(void*))sqlite3RCStrUnref); + pStr->bStatic = 1; + }else{ + sqlite3_result_text(ctx, pStr->zBuf, (int)pStr->nUsed, SQLITE_TRANSIENT); + pStr->nUsed--; + } + }else{ + sqlite3_result_text(ctx, "{}", 2, SQLITE_STATIC); + } + sqlite3_result_subtype(ctx, JSON_SUBTYPE); +} +static void jsonObjectValue(sqlite3_context *ctx){ + jsonObjectCompute(ctx, 0); +} +static void jsonObjectFinal(sqlite3_context *ctx){ + jsonObjectCompute(ctx, 1); +} + + + +#ifndef SQLITE_OMIT_VIRTUALTABLE +/**************************************************************************** +** The json_each virtual table +****************************************************************************/ +typedef struct JsonEachCursor JsonEachCursor; +struct JsonEachCursor { + sqlite3_vtab_cursor base; /* Base class - must be first */ + u32 iRowid; /* The rowid */ + u32 iBegin; /* The first node of the scan */ + u32 i; /* Index in sParse.aNode[] of current row */ + u32 iEnd; /* EOF when i equals or exceeds this value */ + u8 eType; /* Type of top-level element */ + u8 bRecursive; /* True for json_tree(). False for json_each() */ + char *zJson; /* Input JSON */ + char *zRoot; /* Path by which to filter zJson */ + JsonParse sParse; /* Parse of the input JSON */ +}; + +/* Constructor for the json_each virtual table */ +static int jsonEachConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + sqlite3_vtab *pNew; + int rc; + +/* Column numbers */ +#define JEACH_KEY 0 +#define JEACH_VALUE 1 +#define JEACH_TYPE 2 +#define JEACH_ATOM 3 +#define JEACH_ID 4 +#define JEACH_PARENT 5 +#define JEACH_FULLKEY 6 +#define JEACH_PATH 7 +/* The xBestIndex method assumes that the JSON and ROOT columns are +** the last two columns in the table. Should this ever changes, be +** sure to update the xBestIndex method. */ +#define JEACH_JSON 8 +#define JEACH_ROOT 9 + + UNUSED_PARAMETER(pzErr); + UNUSED_PARAMETER(argv); + UNUSED_PARAMETER(argc); + UNUSED_PARAMETER(pAux); + rc = sqlite3_declare_vtab(db, + "CREATE TABLE x(key,value,type,atom,id,parent,fullkey,path," + "json HIDDEN,root HIDDEN)"); + if( rc==SQLITE_OK ){ + pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) ); + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(*pNew)); + sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS); + } + return rc; +} + +/* destructor for json_each virtual table */ +static int jsonEachDisconnect(sqlite3_vtab *pVtab){ + sqlite3_free(pVtab); + return SQLITE_OK; +} + +/* constructor for a JsonEachCursor object for json_each(). */ +static int jsonEachOpenEach(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + JsonEachCursor *pCur; + + UNUSED_PARAMETER(p); + pCur = sqlite3_malloc( sizeof(*pCur) ); + if( pCur==0 ) return SQLITE_NOMEM; + memset(pCur, 0, sizeof(*pCur)); + *ppCursor = &pCur->base; + return SQLITE_OK; +} + +/* constructor for a JsonEachCursor object for json_tree(). */ +static int jsonEachOpenTree(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + int rc = jsonEachOpenEach(p, ppCursor); + if( rc==SQLITE_OK ){ + JsonEachCursor *pCur = (JsonEachCursor*)*ppCursor; + pCur->bRecursive = 1; + } + return rc; +} + +/* Reset a JsonEachCursor back to its original state. Free any memory +** held. */ +static void jsonEachCursorReset(JsonEachCursor *p){ + sqlite3_free(p->zRoot); + jsonParseReset(&p->sParse); + p->iRowid = 0; + p->i = 0; + p->iEnd = 0; + p->eType = 0; + p->zJson = 0; + p->zRoot = 0; +} + +/* Destructor for a jsonEachCursor object */ +static int jsonEachClose(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + jsonEachCursorReset(p); + sqlite3_free(cur); + return SQLITE_OK; +} + +/* Return TRUE if the jsonEachCursor object has been advanced off the end +** of the JSON object */ +static int jsonEachEof(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + return p->i >= p->iEnd; +} + +/* Advance the cursor to the next element for json_tree() */ +static int jsonEachNext(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + if( p->bRecursive ){ + if( p->sParse.aNode[p->i].jnFlags & JNODE_LABEL ) p->i++; + p->i++; + p->iRowid++; + if( p->iiEnd ){ + u32 iUp = p->sParse.aUp[p->i]; + JsonNode *pUp = &p->sParse.aNode[iUp]; + p->eType = pUp->eType; + if( pUp->eType==JSON_ARRAY ){ + assert( pUp->eU==0 || pUp->eU==3 ); + testcase( pUp->eU==3 ); + VVA( pUp->eU = 3 ); + if( iUp==p->i-1 ){ + pUp->u.iKey = 0; + }else{ + pUp->u.iKey++; + } + } + } + }else{ + switch( p->eType ){ + case JSON_ARRAY: { + p->i += jsonNodeSize(&p->sParse.aNode[p->i]); + p->iRowid++; + break; + } + case JSON_OBJECT: { + p->i += 1 + jsonNodeSize(&p->sParse.aNode[p->i+1]); + p->iRowid++; + break; + } + default: { + p->i = p->iEnd; + break; + } + } + } + return SQLITE_OK; +} + +/* Append an object label to the JSON Path being constructed +** in pStr. +*/ +static void jsonAppendObjectPathElement( + JsonString *pStr, + JsonNode *pNode +){ + int jj, nn; + const char *z; + assert( pNode->eType==JSON_STRING ); + assert( pNode->jnFlags & JNODE_LABEL ); + assert( pNode->eU==1 ); + z = pNode->u.zJContent; + nn = pNode->n; + if( (pNode->jnFlags & JNODE_RAW)==0 ){ + assert( nn>=2 ); + assert( z[0]=='"' || z[0]=='\'' ); + assert( z[nn-1]=='"' || z[0]=='\'' ); + if( nn>2 && sqlite3Isalpha(z[1]) ){ + for(jj=2; jjsParse.aUp[i]; + jsonEachComputePath(p, pStr, iUp); + pNode = &p->sParse.aNode[i]; + pUp = &p->sParse.aNode[iUp]; + if( pUp->eType==JSON_ARRAY ){ + assert( pUp->eU==3 || (pUp->eU==0 && pUp->u.iKey==0) ); + testcase( pUp->eU==0 ); + jsonPrintf(30, pStr, "[%d]", pUp->u.iKey); + }else{ + assert( pUp->eType==JSON_OBJECT ); + if( (pNode->jnFlags & JNODE_LABEL)==0 ) pNode--; + jsonAppendObjectPathElement(pStr, pNode); + } +} + +/* Return the value of a column */ +static int jsonEachColumn( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + JsonEachCursor *p = (JsonEachCursor*)cur; + JsonNode *pThis = &p->sParse.aNode[p->i]; + switch( i ){ + case JEACH_KEY: { + if( p->i==0 ) break; + if( p->eType==JSON_OBJECT ){ + jsonReturn(&p->sParse, pThis, ctx); + }else if( p->eType==JSON_ARRAY ){ + u32 iKey; + if( p->bRecursive ){ + if( p->iRowid==0 ) break; + assert( p->sParse.aNode[p->sParse.aUp[p->i]].eU==3 ); + iKey = p->sParse.aNode[p->sParse.aUp[p->i]].u.iKey; + }else{ + iKey = p->iRowid; + } + sqlite3_result_int64(ctx, (sqlite3_int64)iKey); + } + break; + } + case JEACH_VALUE: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + jsonReturn(&p->sParse, pThis, ctx); + break; + } + case JEACH_TYPE: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + sqlite3_result_text(ctx, jsonType[pThis->eType], -1, SQLITE_STATIC); + break; + } + case JEACH_ATOM: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + if( pThis->eType>=JSON_ARRAY ) break; + jsonReturn(&p->sParse, pThis, ctx); + break; + } + case JEACH_ID: { + sqlite3_result_int64(ctx, + (sqlite3_int64)p->i + ((pThis->jnFlags & JNODE_LABEL)!=0)); + break; + } + case JEACH_PARENT: { + if( p->i>p->iBegin && p->bRecursive ){ + sqlite3_result_int64(ctx, (sqlite3_int64)p->sParse.aUp[p->i]); + } + break; + } + case JEACH_FULLKEY: { + JsonString x; + jsonInit(&x, ctx); + if( p->bRecursive ){ + jsonEachComputePath(p, &x, p->i); + }else{ + if( p->zRoot ){ + jsonAppendRaw(&x, p->zRoot, (int)strlen(p->zRoot)); + }else{ + jsonAppendChar(&x, '$'); + } + if( p->eType==JSON_ARRAY ){ + jsonPrintf(30, &x, "[%d]", p->iRowid); + }else if( p->eType==JSON_OBJECT ){ + jsonAppendObjectPathElement(&x, pThis); + } + } + jsonResult(&x); + break; + } + case JEACH_PATH: { + if( p->bRecursive ){ + JsonString x; + jsonInit(&x, ctx); + jsonEachComputePath(p, &x, p->sParse.aUp[p->i]); + jsonResult(&x); + break; + } + /* For json_each() path and root are the same so fall through + ** into the root case */ + /* no break */ deliberate_fall_through + } + default: { + const char *zRoot = p->zRoot; + if( zRoot==0 ) zRoot = "$"; + sqlite3_result_text(ctx, zRoot, -1, SQLITE_STATIC); + break; + } + case JEACH_JSON: { + assert( i==JEACH_JSON ); + sqlite3_result_text(ctx, p->sParse.zJson, -1, SQLITE_STATIC); + break; + } + } + return SQLITE_OK; +} + +/* Return the current rowid value */ +static int jsonEachRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ + JsonEachCursor *p = (JsonEachCursor*)cur; + *pRowid = p->iRowid; + return SQLITE_OK; +} + +/* The query strategy is to look for an equality constraint on the json +** column. Without such a constraint, the table cannot operate. idxNum is +** 1 if the constraint is found, 3 if the constraint and zRoot are found, +** and 0 otherwise. +*/ +static int jsonEachBestIndex( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; /* Loop counter or computed array index */ + int aIdx[2]; /* Index of constraints for JSON and ROOT */ + int unusableMask = 0; /* Mask of unusable JSON and ROOT constraints */ + int idxMask = 0; /* Mask of usable == constraints JSON and ROOT */ + const struct sqlite3_index_constraint *pConstraint; + + /* This implementation assumes that JSON and ROOT are the last two + ** columns in the table */ + assert( JEACH_ROOT == JEACH_JSON+1 ); + UNUSED_PARAMETER(tab); + aIdx[0] = aIdx[1] = -1; + pConstraint = pIdxInfo->aConstraint; + for(i=0; inConstraint; i++, pConstraint++){ + int iCol; + int iMask; + if( pConstraint->iColumn < JEACH_JSON ) continue; + iCol = pConstraint->iColumn - JEACH_JSON; + assert( iCol==0 || iCol==1 ); + testcase( iCol==0 ); + iMask = 1 << iCol; + if( pConstraint->usable==0 ){ + unusableMask |= iMask; + }else if( pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){ + aIdx[iCol] = i; + idxMask |= iMask; + } + } + if( pIdxInfo->nOrderBy>0 + && pIdxInfo->aOrderBy[0].iColumn<0 + && pIdxInfo->aOrderBy[0].desc==0 + ){ + pIdxInfo->orderByConsumed = 1; + } + + if( (unusableMask & ~idxMask)!=0 ){ + /* If there are any unusable constraints on JSON or ROOT, then reject + ** this entire plan */ + return SQLITE_CONSTRAINT; + } + if( aIdx[0]<0 ){ + /* No JSON input. Leave estimatedCost at the huge value that it was + ** initialized to to discourage the query planner from selecting this + ** plan. */ + pIdxInfo->idxNum = 0; + }else{ + pIdxInfo->estimatedCost = 1.0; + i = aIdx[0]; + pIdxInfo->aConstraintUsage[i].argvIndex = 1; + pIdxInfo->aConstraintUsage[i].omit = 1; + if( aIdx[1]<0 ){ + pIdxInfo->idxNum = 1; /* Only JSON supplied. Plan 1 */ + }else{ + i = aIdx[1]; + pIdxInfo->aConstraintUsage[i].argvIndex = 2; + pIdxInfo->aConstraintUsage[i].omit = 1; + pIdxInfo->idxNum = 3; /* Both JSON and ROOT are supplied. Plan 3 */ + } + } + return SQLITE_OK; +} + +/* Start a search on a new JSON string */ +static int jsonEachFilter( + sqlite3_vtab_cursor *cur, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + JsonEachCursor *p = (JsonEachCursor*)cur; + const char *z; + const char *zRoot = 0; + sqlite3_int64 n; + + UNUSED_PARAMETER(idxStr); + UNUSED_PARAMETER(argc); + jsonEachCursorReset(p); + if( idxNum==0 ) return SQLITE_OK; + z = (const char*)sqlite3_value_text(argv[0]); + if( z==0 ) return SQLITE_OK; + memset(&p->sParse, 0, sizeof(p->sParse)); + p->sParse.nJPRef = 1; + if( sqlite3ValueIsOfClass(argv[0], (void(*)(void*))sqlite3RCStrUnref) ){ + p->sParse.zJson = sqlite3RCStrRef((char*)z); + }else{ + n = sqlite3_value_bytes(argv[0]); + p->sParse.zJson = sqlite3RCStrNew( n+1 ); + if( p->sParse.zJson==0 ) return SQLITE_NOMEM; + memcpy(p->sParse.zJson, z, (size_t)n+1); + } + p->sParse.bJsonIsRCStr = 1; + p->zJson = p->sParse.zJson; + if( jsonParse(&p->sParse, 0) ){ + int rc = SQLITE_NOMEM; + if( p->sParse.oom==0 ){ + sqlite3_free(cur->pVtab->zErrMsg); + cur->pVtab->zErrMsg = sqlite3_mprintf("malformed JSON"); + if( cur->pVtab->zErrMsg ) rc = SQLITE_ERROR; + } + jsonEachCursorReset(p); + return rc; + }else if( p->bRecursive && jsonParseFindParents(&p->sParse) ){ + jsonEachCursorReset(p); + return SQLITE_NOMEM; + }else{ + JsonNode *pNode = 0; + if( idxNum==3 ){ + const char *zErr = 0; + zRoot = (const char*)sqlite3_value_text(argv[1]); + if( zRoot==0 ) return SQLITE_OK; + n = sqlite3_value_bytes(argv[1]); + p->zRoot = sqlite3_malloc64( n+1 ); + if( p->zRoot==0 ) return SQLITE_NOMEM; + memcpy(p->zRoot, zRoot, (size_t)n+1); + if( zRoot[0]!='$' ){ + zErr = zRoot; + }else{ + pNode = jsonLookupStep(&p->sParse, 0, p->zRoot+1, 0, &zErr); + } + if( zErr ){ + sqlite3_free(cur->pVtab->zErrMsg); + cur->pVtab->zErrMsg = jsonPathSyntaxError(zErr); + jsonEachCursorReset(p); + return cur->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM; + }else if( pNode==0 ){ + return SQLITE_OK; + } + }else{ + pNode = p->sParse.aNode; + } + p->iBegin = p->i = (int)(pNode - p->sParse.aNode); + p->eType = pNode->eType; + if( p->eType>=JSON_ARRAY ){ + assert( pNode->eU==0 ); + VVA( pNode->eU = 3 ); + pNode->u.iKey = 0; + p->iEnd = p->i + pNode->n + 1; + if( p->bRecursive ){ + p->eType = p->sParse.aNode[p->sParse.aUp[p->i]].eType; + if( p->i>0 && (p->sParse.aNode[p->i-1].jnFlags & JNODE_LABEL)!=0 ){ + p->i--; + } + }else{ + p->i++; + } + }else{ + p->iEnd = p->i+1; + } + } + return SQLITE_OK; +} + +/* The methods of the json_each virtual table */ +static sqlite3_module jsonEachModule = { + 0, /* iVersion */ + 0, /* xCreate */ + jsonEachConnect, /* xConnect */ + jsonEachBestIndex, /* xBestIndex */ + jsonEachDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + jsonEachOpenEach, /* xOpen - open a cursor */ + jsonEachClose, /* xClose - close a cursor */ + jsonEachFilter, /* xFilter - configure scan constraints */ + jsonEachNext, /* xNext - advance a cursor */ + jsonEachEof, /* xEof - check for end of scan */ + jsonEachColumn, /* xColumn - read data */ + jsonEachRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ +}; + +/* The methods of the json_tree virtual table. */ +static sqlite3_module jsonTreeModule = { + 0, /* iVersion */ + 0, /* xCreate */ + jsonEachConnect, /* xConnect */ + jsonEachBestIndex, /* xBestIndex */ + jsonEachDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + jsonEachOpenTree, /* xOpen - open a cursor */ + jsonEachClose, /* xClose - close a cursor */ + jsonEachFilter, /* xFilter - configure scan constraints */ + jsonEachNext, /* xNext - advance a cursor */ + jsonEachEof, /* xEof - check for end of scan */ + jsonEachColumn, /* xColumn - read data */ + jsonEachRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ +}; +#endif /* SQLITE_OMIT_VIRTUALTABLE */ +#endif /* !defined(SQLITE_OMIT_JSON) */ + +/* +** Register JSON functions. +*/ +SQLITE_PRIVATE void sqlite3RegisterJsonFunctions(void){ +#ifndef SQLITE_OMIT_JSON + static FuncDef aJsonFunc[] = { + JFUNCTION(json, 1, 0, jsonRemoveFunc), + JFUNCTION(json_array, -1, 0, jsonArrayFunc), + JFUNCTION(json_array_length, 1, 0, jsonArrayLengthFunc), + JFUNCTION(json_array_length, 2, 0, jsonArrayLengthFunc), + JFUNCTION(json_error_position,1, 0, jsonErrorFunc), + JFUNCTION(json_extract, -1, 0, jsonExtractFunc), + JFUNCTION(->, 2, JSON_JSON, jsonExtractFunc), + JFUNCTION(->>, 2, JSON_SQL, jsonExtractFunc), + JFUNCTION(json_insert, -1, 0, jsonSetFunc), + JFUNCTION(json_object, -1, 0, jsonObjectFunc), + JFUNCTION(json_patch, 2, 0, jsonPatchFunc), + JFUNCTION(json_quote, 1, 0, jsonQuoteFunc), + JFUNCTION(json_remove, -1, 0, jsonRemoveFunc), + JFUNCTION(json_replace, -1, 0, jsonReplaceFunc), + JFUNCTION(json_set, -1, JSON_ISSET, jsonSetFunc), + JFUNCTION(json_type, 1, 0, jsonTypeFunc), + JFUNCTION(json_type, 2, 0, jsonTypeFunc), + JFUNCTION(json_valid, 1, 0, jsonValidFunc), +#if SQLITE_DEBUG + JFUNCTION(json_parse, 1, 0, jsonParseFunc), + JFUNCTION(json_test1, 1, 0, jsonTest1Func), +#endif + WAGGREGATE(json_group_array, 1, 0, 0, + jsonArrayStep, jsonArrayFinal, jsonArrayValue, jsonGroupInverse, + SQLITE_SUBTYPE|SQLITE_UTF8|SQLITE_DETERMINISTIC), + WAGGREGATE(json_group_object, 2, 0, 0, + jsonObjectStep, jsonObjectFinal, jsonObjectValue, jsonGroupInverse, + SQLITE_SUBTYPE|SQLITE_UTF8|SQLITE_DETERMINISTIC) + }; + sqlite3InsertBuiltinFuncs(aJsonFunc, ArraySize(aJsonFunc)); +#endif +} + +#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_JSON) +/* +** Register the JSON table-valued functions +*/ +SQLITE_PRIVATE int sqlite3JsonTableFunctions(sqlite3 *db){ + int rc = SQLITE_OK; + static const struct { + const char *zName; + sqlite3_module *pModule; + } aMod[] = { + { "json_each", &jsonEachModule }, + { "json_tree", &jsonTreeModule }, + }; + unsigned int i; + for(i=0; i */ -/* #include */ -/* #include */ - -#ifndef SQLITE_AMALGAMATION +/* +** If building separately, we will need some setup that is normally +** found in sqliteInt.h +*/ +#if !defined(SQLITE_AMALGAMATION) #include "sqlite3rtree.h" typedef sqlite3_int64 i64; typedef sqlite3_uint64 u64; typedef unsigned char u8; typedef unsigned short u16; typedef unsigned int u32; +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) +# define NDEBUG 1 #endif +#if defined(NDEBUG) && defined(SQLITE_DEBUG) +# undef NDEBUG +#endif +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) +# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1 +#endif +#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS) +# define ALWAYS(X) (1) +# define NEVER(X) (0) +#elif !defined(NDEBUG) +# define ALWAYS(X) ((X)?1:(assert(0),0)) +# define NEVER(X) ((X)?(assert(0),1):0) +#else +# define ALWAYS(X) (X) +# define NEVER(X) (X) +#endif +#endif /* !defined(SQLITE_AMALGAMATION) */ + +/* Macro to check for 4-byte alignment. Only used inside of assert() */ +#ifdef SQLITE_DEBUG +# define FOUR_BYTE_ALIGNED(X) ((((char*)(X) - (char*)0) & 3)==0) +#endif + +/* #include */ +/* #include */ +/* #include */ +/* #include */ /* The following macro is used to suppress compiler warnings. */ @@ -170619,7 +205212,7 @@ typedef struct RtreeSearchPoint RtreeSearchPoint; #define RTREE_MAX_AUX_COLUMN 100 /* Size of hash table Rtree.aHash. This hash table is not expected to -** ever contain very many entries, so a fixed number of buckets is +** ever contain very many entries, so a fixed number of buckets is ** used. */ #define HASHSIZE 97 @@ -170628,13 +205221,13 @@ typedef struct RtreeSearchPoint RtreeSearchPoint; ** the number of rows in the virtual table to calculate the costs of ** various strategies. If possible, this estimate is loaded from the ** sqlite_stat1 table (with RTREE_MIN_ROWEST as a hard-coded minimum). -** Otherwise, if no sqlite_stat1 entry is available, use +** Otherwise, if no sqlite_stat1 entry is available, use ** RTREE_DEFAULT_ROWEST. */ #define RTREE_DEFAULT_ROWEST 1048576 #define RTREE_MIN_ROWEST 100 -/* +/* ** An rtree virtual-table object. */ struct Rtree { @@ -170647,9 +205240,15 @@ struct Rtree { u8 nBytesPerCell; /* Bytes consumed per cell */ u8 inWrTrans; /* True if inside write transaction */ u8 nAux; /* # of auxiliary columns in %_rowid */ +#ifdef SQLITE_ENABLE_GEOPOLY + u8 nAuxNotNull; /* Number of initial not-null aux columns */ +#endif +#ifdef SQLITE_DEBUG + u8 bCorrupt; /* Shadow table corruption detected */ +#endif int iDepth; /* Current depth of the r-tree structure */ char *zDb; /* Name of database containing r-tree table */ - char *zName; /* Name of r-tree table */ + char *zName; /* Name of r-tree table */ u32 nBusy; /* Current number of users of this structure */ i64 nRowEst; /* Estimated number of rows in this table */ u32 nCursor; /* Number of open cursors */ @@ -170658,7 +205257,7 @@ struct Rtree { /* List of nodes removed during a CondenseTree operation. List is ** linked together via the pointer normally used for hash chains - - ** RtreeNode.pNext. RtreeNode.iNode stores the depth of the sub-tree + ** RtreeNode.pNext. RtreeNode.iNode stores the depth of the sub-tree ** headed by the node (leaf nodes have RtreeNode.iNode==0). */ RtreeNode *pDeleted; @@ -170684,7 +205283,7 @@ struct Rtree { /* Statement for writing to the "aux:" fields, if there are any */ sqlite3_stmt *pWriteAux; - RtreeNode *aHash[HASHSIZE]; /* Hash table of in-memory nodes. */ + RtreeNode *aHash[HASHSIZE]; /* Hash table of in-memory nodes. */ }; /* Possible values for Rtree.eCoordType: */ @@ -170706,6 +205305,15 @@ struct Rtree { # define RTREE_ZERO 0.0 #endif +/* +** Set the Rtree.bCorrupt flag +*/ +#ifdef SQLITE_DEBUG +# define RTREE_IS_CORRUPT(X) ((X)->bCorrupt = 1) +#else +# define RTREE_IS_CORRUPT(X) +#endif + /* ** When doing a search of an r-tree, instances of the following structure ** record intermediate results from the tree walk. @@ -170724,7 +205332,7 @@ struct RtreeSearchPoint { }; /* -** The minimum number of cells allowed for a node is a third of the +** The minimum number of cells allowed for a node is a third of the ** maximum. In Gutman's notation: ** ** m = M/3 @@ -170739,7 +205347,7 @@ struct RtreeSearchPoint { /* ** The smallest possible node-size is (512-64)==448 bytes. And the largest ** supported cell size is 48 bytes (8 byte rowid + ten 4 byte coordinates). -** Therefore all non-root nodes must contain at least 3 entries. Since +** Therefore all non-root nodes must contain at least 3 entries. Since ** 3^40 is greater than 2^64, an r-tree structure always has a depth of ** 40 or less. */ @@ -170753,7 +205361,7 @@ struct RtreeSearchPoint { */ #define RTREE_CACHE_SZ 5 -/* +/* ** An rtree cursor object. */ struct RtreeCursor { @@ -170826,8 +205434,14 @@ struct RtreeConstraint { #define RTREE_MATCH 0x46 /* F: Old-style sqlite3_rtree_geometry_callback() */ #define RTREE_QUERY 0x47 /* G: New-style sqlite3_rtree_query_callback() */ +/* Special operators available only on cursors. Needs to be consecutive +** with the normal values above, but must be less than RTREE_MATCH. These +** are used in the cursor for contraints such as x=NULL (RTREE_FALSE) or +** x<'xyz' (RTREE_TRUE) */ +#define RTREE_TRUE 0x3f /* ? */ +#define RTREE_FALSE 0x40 /* @ */ -/* +/* ** An rtree structure node. */ struct RtreeNode { @@ -170842,7 +205456,7 @@ struct RtreeNode { /* Return the number of cells in a node */ #define NCELL(pNode) readInt16(&(pNode)->zData[2]) -/* +/* ** A single cell from a node, deserialized */ struct RtreeCell { @@ -170857,11 +205471,11 @@ struct RtreeCell { ** sqlite3_rtree_query_callback() and which appear on the right of MATCH ** operators in order to constrain a search. ** -** xGeom and xQueryFunc are the callback functions. Exactly one of +** xGeom and xQueryFunc are the callback functions. Exactly one of ** xGeom and xQueryFunc fields is non-NULL, depending on whether the ** SQL function was created using sqlite3_rtree_geometry_callback() or ** sqlite3_rtree_query_callback(). -** +** ** This object is deleted automatically by the destructor mechanism in ** sqlite3_create_function_v2(). */ @@ -170910,7 +205524,29 @@ struct RtreeMatchArg { ** it is not, make it a no-op. */ #ifndef SQLITE_AMALGAMATION -# define testcase(X) +# if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG) + unsigned int sqlite3RtreeTestcase = 0; +# define testcase(X) if( X ){ sqlite3RtreeTestcase += __LINE__; } +# else +# define testcase(X) +# endif +#endif + +/* +** Make sure that the compiler intrinsics we desire are enabled when +** compiling with an appropriate version of MSVC unless prevented by +** the SQLITE_DISABLE_INTRINSIC define. +*/ +#if !defined(SQLITE_DISABLE_INTRINSIC) +# if defined(_MSC_VER) && _MSC_VER>=1400 +# if !defined(_WIN32_WCE) +/* # include */ +# pragma intrinsic(_byteswap_ulong) +# pragma intrinsic(_byteswap_uint64) +# else +/* # include */ +# endif +# endif #endif /* @@ -170923,16 +205559,17 @@ struct RtreeMatchArg { ** at run-time. */ #ifndef SQLITE_BYTEORDER -#if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ - defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ - defined(__arm__) -# define SQLITE_BYTEORDER 1234 -#elif defined(sparc) || defined(__ppc__) -# define SQLITE_BYTEORDER 4321 -#else -# define SQLITE_BYTEORDER 0 /* 0 means "unknown at compile-time" */ -#endif +# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ + defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ + defined(__ARMEL__) || defined(__AARCH64EL__) || defined(_M_ARM64) +# define SQLITE_BYTEORDER 1234 +# elif defined(sparc) || defined(__ppc__) || \ + defined(__ARMEB__) || defined(__AARCH64EB__) +# define SQLITE_BYTEORDER 4321 +# else +# define SQLITE_BYTEORDER 0 +# endif #endif @@ -170953,7 +205590,7 @@ static int readInt16(u8 *p){ return (p[0]<<8) + p[1]; } static void readCoord(u8 *p, RtreeCoord *pCoord){ - assert( ((((char*)p) - (char*)0)&3)==0 ); /* p is always 4-byte aligned */ + assert( FOUR_BYTE_ALIGNED(p) ); #if SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 pCoord->u = _byteswap_ulong(*(u32*)p); #elif SQLITE_BYTEORDER==1234 && GCC_VERSION>=4003000 @@ -170962,9 +205599,9 @@ static void readCoord(u8 *p, RtreeCoord *pCoord){ pCoord->u = *(u32*)p; #else pCoord->u = ( - (((u32)p[0]) << 24) + - (((u32)p[1]) << 16) + - (((u32)p[2]) << 8) + + (((u32)p[0]) << 24) + + (((u32)p[1]) << 16) + + (((u32)p[2]) << 8) + (((u32)p[3]) << 0) ); #endif @@ -170984,13 +205621,13 @@ static i64 readInt64(u8 *p){ return x; #else return (i64)( - (((u64)p[0]) << 56) + - (((u64)p[1]) << 48) + - (((u64)p[2]) << 40) + - (((u64)p[3]) << 32) + - (((u64)p[4]) << 24) + - (((u64)p[5]) << 16) + - (((u64)p[6]) << 8) + + (((u64)p[0]) << 56) + + (((u64)p[1]) << 48) + + (((u64)p[2]) << 40) + + (((u64)p[3]) << 32) + + (((u64)p[4]) << 24) + + (((u64)p[5]) << 16) + + (((u64)p[6]) << 8) + (((u64)p[7]) << 0) ); #endif @@ -171007,7 +205644,7 @@ static void writeInt16(u8 *p, int i){ } static int writeCoord(u8 *p, RtreeCoord *pCoord){ u32 i; - assert( ((((char*)p) - (char*)0)&3)==0 ); /* p is always 4-byte aligned */ + assert( FOUR_BYTE_ALIGNED(p) ); assert( sizeof(RtreeCoord)==4 ); assert( sizeof(u32)==4 ); #if SQLITE_BYTEORDER==1234 && GCC_VERSION>=4003000 @@ -171072,8 +205709,8 @@ static void nodeZero(Rtree *pRtree, RtreeNode *p){ ** Given a node number iNode, return the corresponding key to use ** in the Rtree.aHash table. */ -static int nodeHash(i64 iNode){ - return iNode % HASHSIZE; +static unsigned int nodeHash(i64 iNode){ + return ((unsigned)iNode) % HASHSIZE; } /* @@ -171118,7 +205755,7 @@ static void nodeHashDelete(Rtree *pRtree, RtreeNode *pNode){ */ static RtreeNode *nodeNew(Rtree *pRtree, RtreeNode *pParent){ RtreeNode *pNode; - pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode) + pRtree->iNodeSize); + pNode = (RtreeNode *)sqlite3_malloc64(sizeof(RtreeNode) + pRtree->iNodeSize); if( pNode ){ memset(pNode, 0, sizeof(RtreeNode) + pRtree->iNodeSize); pNode->zData = (u8 *)&pNode[1]; @@ -171158,10 +205795,9 @@ static int nodeAcquire( ** increase its reference count and return it. */ if( (pNode = nodeHashLookup(pRtree, iNode))!=0 ){ - assert( !pParent || !pNode->pParent || pNode->pParent==pParent ); - if( pParent && !pNode->pParent ){ - pParent->nRef++; - pNode->pParent = pParent; + if( pParent && pParent!=pNode->pParent ){ + RTREE_IS_CORRUPT(pRtree); + return SQLITE_CORRUPT_VTAB; } pNode->nRef++; *ppNode = pNode; @@ -171190,9 +205826,12 @@ static int nodeAcquire( *ppNode = 0; /* If unable to open an sqlite3_blob on the desired row, that can only ** be because the shadow tables hold erroneous data. */ - if( rc==SQLITE_ERROR ) rc = SQLITE_CORRUPT_VTAB; + if( rc==SQLITE_ERROR ){ + rc = SQLITE_CORRUPT_VTAB; + RTREE_IS_CORRUPT(pRtree); + } }else if( pRtree->iNodeSize==sqlite3_blob_bytes(pRtree->pNodeBlob) ){ - pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode)+pRtree->iNodeSize); + pNode = (RtreeNode *)sqlite3_malloc64(sizeof(RtreeNode)+pRtree->iNodeSize); if( !pNode ){ rc = SQLITE_NOMEM; }else{ @@ -171205,7 +205844,6 @@ static int nodeAcquire( pNode->pNext = 0; rc = sqlite3_blob_read(pRtree->pNodeBlob, pNode->zData, pRtree->iNodeSize, 0); - nodeReference(pParent); } } @@ -171215,28 +205853,32 @@ static int nodeAcquire( ** are the leaves, and so on. If the depth as specified on the root node ** is greater than RTREE_MAX_DEPTH, the r-tree structure must be corrupt. */ - if( pNode && iNode==1 ){ + if( rc==SQLITE_OK && pNode && iNode==1 ){ pRtree->iDepth = readInt16(pNode->zData); if( pRtree->iDepth>RTREE_MAX_DEPTH ){ rc = SQLITE_CORRUPT_VTAB; + RTREE_IS_CORRUPT(pRtree); } } /* If no error has occurred so far, check if the "number of entries" - ** field on the node is too large. If so, set the return code to + ** field on the node is too large. If so, set the return code to ** SQLITE_CORRUPT_VTAB. */ if( pNode && rc==SQLITE_OK ){ if( NCELL(pNode)>((pRtree->iNodeSize-4)/pRtree->nBytesPerCell) ){ rc = SQLITE_CORRUPT_VTAB; + RTREE_IS_CORRUPT(pRtree); } } if( rc==SQLITE_OK ){ if( pNode!=0 ){ + nodeReference(pParent); nodeHashInsert(pRtree, pNode); }else{ rc = SQLITE_CORRUPT_VTAB; + RTREE_IS_CORRUPT(pRtree); } *ppNode = pNode; }else{ @@ -171419,7 +206061,7 @@ static int rtreeInit( sqlite3 *, void *, int, const char *const*, sqlite3_vtab **, char **, int ); -/* +/* ** Rtree virtual table module xCreate method. */ static int rtreeCreate( @@ -171432,7 +206074,7 @@ static int rtreeCreate( return rtreeInit(db, pAux, argc, argv, ppVtab, pzErr, 1); } -/* +/* ** Rtree virtual table module xConnect method. */ static int rtreeConnect( @@ -171462,7 +206104,7 @@ static void rtreeRelease(Rtree *pRtree){ pRtree->inWrTrans = 0; assert( pRtree->nCursor==0 ); nodeBlobReset(pRtree); - assert( pRtree->nNodeRef==0 ); + assert( pRtree->nNodeRef==0 || pRtree->bCorrupt ); sqlite3_finalize(pRtree->pWriteNode); sqlite3_finalize(pRtree->pDeleteNode); sqlite3_finalize(pRtree->pReadRowid); @@ -171477,7 +206119,7 @@ static void rtreeRelease(Rtree *pRtree){ } } -/* +/* ** Rtree virtual table module xDisconnect method. */ static int rtreeDisconnect(sqlite3_vtab *pVtab){ @@ -171485,7 +206127,7 @@ static int rtreeDisconnect(sqlite3_vtab *pVtab){ return SQLITE_OK; } -/* +/* ** Rtree virtual table module xDestroy method. */ static int rtreeDestroy(sqlite3_vtab *pVtab){ @@ -171495,7 +206137,7 @@ static int rtreeDestroy(sqlite3_vtab *pVtab){ "DROP TABLE '%q'.'%q_node';" "DROP TABLE '%q'.'%q_rowid';" "DROP TABLE '%q'.'%q_parent';", - pRtree->zDb, pRtree->zName, + pRtree->zDb, pRtree->zName, pRtree->zDb, pRtree->zName, pRtree->zDb, pRtree->zName ); @@ -171513,7 +206155,7 @@ static int rtreeDestroy(sqlite3_vtab *pVtab){ return rc; } -/* +/* ** Rtree virtual table module xOpen method. */ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ @@ -171521,7 +206163,7 @@ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ Rtree *pRtree = (Rtree *)pVTab; RtreeCursor *pCsr; - pCsr = (RtreeCursor *)sqlite3_malloc(sizeof(RtreeCursor)); + pCsr = (RtreeCursor *)sqlite3_malloc64(sizeof(RtreeCursor)); if( pCsr ){ memset(pCsr, 0, sizeof(RtreeCursor)); pCsr->base.pVtab = pVTab; @@ -171535,9 +206177,12 @@ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ /* -** Free the RtreeCursor.aConstraint[] array and its contents. +** Reset a cursor back to its initial state. */ -static void freeCursorConstraints(RtreeCursor *pCsr){ +static void resetCursor(RtreeCursor *pCsr){ + Rtree *pRtree = (Rtree *)(pCsr->base.pVtab); + int ii; + sqlite3_stmt *pStmt; if( pCsr->aConstraint ){ int i; /* Used to iterate through constraint array */ for(i=0; inConstraint; i++){ @@ -171550,20 +206195,24 @@ static void freeCursorConstraints(RtreeCursor *pCsr){ sqlite3_free(pCsr->aConstraint); pCsr->aConstraint = 0; } + for(ii=0; iiaNode[ii]); + sqlite3_free(pCsr->aPoint); + pStmt = pCsr->pReadAux; + memset(pCsr, 0, sizeof(RtreeCursor)); + pCsr->base.pVtab = (sqlite3_vtab*)pRtree; + pCsr->pReadAux = pStmt; + } -/* +/* ** Rtree virtual table module xClose method. */ static int rtreeClose(sqlite3_vtab_cursor *cur){ Rtree *pRtree = (Rtree *)(cur->pVtab); - int ii; RtreeCursor *pCsr = (RtreeCursor *)cur; assert( pRtree->nCursor>0 ); - freeCursorConstraints(pCsr); + resetCursor(pCsr); sqlite3_finalize(pCsr->pReadAux); - sqlite3_free(pCsr->aPoint); - for(ii=0; iiaNode[ii]); sqlite3_free(pCsr); pRtree->nCursor--; nodeBlobReset(pRtree); @@ -171573,7 +206222,7 @@ static int rtreeClose(sqlite3_vtab_cursor *cur){ /* ** Rtree virtual table module xEof method. ** -** Return non-zero if the cursor does not currently point to a valid +** Return non-zero if the cursor does not currently point to a valid ** record (i.e if the scan has finished), or zero otherwise. */ static int rtreeEof(sqlite3_vtab_cursor *cur){ @@ -171629,7 +206278,7 @@ static int rtreeEof(sqlite3_vtab_cursor *cur){ /* ** Check the RTree node or entry given by pCellData and p against the MATCH -** constraint pConstraint. +** constraint pConstraint. */ static int rtreeCallbackConstraint( RtreeConstraint *pConstraint, /* The constraint to test */ @@ -171702,7 +206351,7 @@ static int rtreeCallbackConstraint( return rc; } -/* +/* ** Check the internal RTree node given by pCellData against constraint p. ** If this constraint cannot be satisfied by any child within the node, ** set *peWithin to NOT_WITHIN. @@ -171720,24 +206369,36 @@ static void rtreeNonleafConstraint( */ pCellData += 8 + 4*(p->iCoord&0xfe); - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ ); - assert( ((((char*)pCellData) - (char*)0)&3)==0 ); /* 4-byte aligned */ + assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE + || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_TRUE + || p->op==RTREE_FALSE ); + assert( FOUR_BYTE_ALIGNED(pCellData) ); switch( p->op ){ - case RTREE_LE: - case RTREE_LT: + case RTREE_TRUE: return; /* Always satisfied */ + case RTREE_FALSE: break; /* Never satisfied */ case RTREE_EQ: + RTREE_DECODE_COORD(eInt, pCellData, val); + /* val now holds the lower bound of the coordinate pair */ + if( p->u.rValue>=val ){ + pCellData += 4; + RTREE_DECODE_COORD(eInt, pCellData, val); + /* val now holds the upper bound of the coordinate pair */ + if( p->u.rValue<=val ) return; + } + break; + case RTREE_LE: + case RTREE_LT: RTREE_DECODE_COORD(eInt, pCellData, val); /* val now holds the lower bound of the coordinate pair */ if( p->u.rValue>=val ) return; - if( p->op!=RTREE_EQ ) break; /* RTREE_LE and RTREE_LT end here */ - /* Fall through for the RTREE_EQ case */ + break; - default: /* RTREE_GT or RTREE_GE, or fallthrough of RTREE_EQ */ + default: pCellData += 4; RTREE_DECODE_COORD(eInt, pCellData, val); /* val now holds the upper bound of the coordinate pair */ if( p->u.rValue<=val ) return; + break; } *peWithin = NOT_WITHIN; } @@ -171760,28 +206421,31 @@ static void rtreeLeafConstraint( ){ RtreeDValue xN; /* Coordinate value converted to a double */ - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ ); + assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE + || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_TRUE + || p->op==RTREE_FALSE ); pCellData += 8 + p->iCoord*4; - assert( ((((char*)pCellData) - (char*)0)&3)==0 ); /* 4-byte aligned */ + assert( FOUR_BYTE_ALIGNED(pCellData) ); RTREE_DECODE_COORD(eInt, pCellData, xN); switch( p->op ){ - case RTREE_LE: if( xN <= p->u.rValue ) return; break; - case RTREE_LT: if( xN < p->u.rValue ) return; break; - case RTREE_GE: if( xN >= p->u.rValue ) return; break; - case RTREE_GT: if( xN > p->u.rValue ) return; break; - default: if( xN == p->u.rValue ) return; break; + case RTREE_TRUE: return; /* Always satisfied */ + case RTREE_FALSE: break; /* Never satisfied */ + case RTREE_LE: if( xN <= p->u.rValue ) return; break; + case RTREE_LT: if( xN < p->u.rValue ) return; break; + case RTREE_GE: if( xN >= p->u.rValue ) return; break; + case RTREE_GT: if( xN > p->u.rValue ) return; break; + default: if( xN == p->u.rValue ) return; break; } *peWithin = NOT_WITHIN; } /* -** One of the cells in node pNode is guaranteed to have a 64-bit +** One of the cells in node pNode is guaranteed to have a 64-bit ** integer value equal to iRowid. Return the index of this cell. */ static int nodeRowidIndex( - Rtree *pRtree, - RtreeNode *pNode, + Rtree *pRtree, + RtreeNode *pNode, i64 iRowid, int *piIndex ){ @@ -171794,6 +206458,7 @@ static int nodeRowidIndex( return SQLITE_OK; } } + RTREE_IS_CORRUPT(pRtree); return SQLITE_CORRUPT_VTAB; } @@ -171803,11 +206468,12 @@ static int nodeRowidIndex( */ static int nodeParentIndex(Rtree *pRtree, RtreeNode *pNode, int *piIndex){ RtreeNode *pParent = pNode->pParent; - if( pParent ){ + if( ALWAYS(pParent) ){ return nodeRowidIndex(pRtree, pParent, pNode->iNode, piIndex); + }else{ + *piIndex = -1; + return SQLITE_OK; } - *piIndex = -1; - return SQLITE_OK; } /* @@ -171887,7 +206553,7 @@ static RtreeSearchPoint *rtreeEnqueue( RtreeSearchPoint *pNew; if( pCur->nPoint>=pCur->nPointAlloc ){ int nNew = pCur->nPointAlloc*2 + 8; - pNew = sqlite3_realloc(pCur->aPoint, nNew*sizeof(pCur->aPoint[0])); + pNew = sqlite3_realloc64(pCur->aPoint, nNew*sizeof(pCur->aPoint[0])); if( pNew==0 ) return 0; pCur->aPoint = pNew; pCur->nPointAlloc = nNew; @@ -171922,7 +206588,7 @@ static RtreeSearchPoint *rtreeSearchPointNew( pFirst = rtreeSearchPointFirst(pCur); pCur->anQueue[iLevel]++; if( pFirst==0 - || pFirst->rScore>rScore + || pFirst->rScore>rScore || (pFirst->rScore==rScore && pFirst->iLevel>iLevel) ){ if( pCur->bPoint ){ @@ -171930,7 +206596,8 @@ static RtreeSearchPoint *rtreeSearchPointNew( pNew = rtreeEnqueue(pCur, rScore, iLevel); if( pNew==0 ) return 0; ii = (int)(pNew - pCur->aPoint) + 1; - if( iiaNode[ii]==0 ); pCur->aNode[ii] = pCur->aNode[0]; }else{ @@ -171991,7 +206658,7 @@ static void rtreeSearchPointPop(RtreeCursor *p){ if( p->bPoint ){ p->anQueue[p->sPoint.iLevel]--; p->bPoint = 0; - }else if( p->nPoint ){ + }else if( ALWAYS(p->nPoint) ){ p->anQueue[p->aPoint[0].iLevel]--; n = --p->nPoint; p->aPoint[0] = p->aPoint[n]; @@ -172042,13 +206709,14 @@ static int rtreeStepToLeaf(RtreeCursor *pCur){ eInt = pRtree->eCoordType==RTREE_COORD_INT32; while( (p = rtreeSearchPointFirst(pCur))!=0 && p->iLevel>0 ){ + u8 *pCellData; pNode = rtreeNodeOfFirstSearchPoint(pCur, &rc); if( rc ) return rc; nCell = NCELL(pNode); assert( nCell<200 ); + pCellData = pNode->zData + (4+pRtree->nBytesPerCell*p->iCell); while( p->iCellzData + (4+pRtree->nBytesPerCell*p->iCell); eWithin = FULLY_WITHIN; for(ii=0; iiaConstraint + ii; @@ -172061,13 +206729,23 @@ static int rtreeStepToLeaf(RtreeCursor *pCur){ }else{ rtreeNonleafConstraint(pConstraint, eInt, pCellData, &eWithin); } - if( eWithin==NOT_WITHIN ) break; + if( eWithin==NOT_WITHIN ){ + p->iCell++; + pCellData += pRtree->nBytesPerCell; + break; + } } - p->iCell++; if( eWithin==NOT_WITHIN ) continue; + p->iCell++; x.iLevel = p->iLevel - 1; if( x.iLevel ){ x.id = readInt64(pCellData); + for(ii=0; iinPoint; ii++){ + if( pCur->aPoint[ii].id==x.id ){ + RTREE_IS_CORRUPT(pRtree); + return SQLITE_CORRUPT_VTAB; + } + } x.iCell = 0; }else{ x.id = p->id; @@ -172095,7 +206773,7 @@ static int rtreeStepToLeaf(RtreeCursor *pCur){ return SQLITE_OK; } -/* +/* ** Rtree virtual table module xNext method. */ static int rtreeNext(sqlite3_vtab_cursor *pVtabCursor){ @@ -172113,7 +206791,7 @@ static int rtreeNext(sqlite3_vtab_cursor *pVtabCursor){ return rc; } -/* +/* ** Rtree virtual table module xRowid method. */ static int rtreeRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){ @@ -172121,13 +206799,13 @@ static int rtreeRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){ RtreeSearchPoint *p = rtreeSearchPointFirst(pCsr); int rc = SQLITE_OK; RtreeNode *pNode = rtreeNodeOfFirstSearchPoint(pCsr, &rc); - if( rc==SQLITE_OK && p ){ + if( rc==SQLITE_OK && ALWAYS(p) ){ *pRowid = nodeGetRowid(RTREE_OF_CURSOR(pCsr), pNode, p->iCell); } return rc; } -/* +/* ** Rtree virtual table module xColumn method. */ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ @@ -172139,7 +206817,7 @@ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ RtreeNode *pNode = rtreeNodeOfFirstSearchPoint(pCsr, &rc); if( rc ) return rc; - if( p==0 ) return SQLITE_OK; + if( NEVER(p==0) ) return SQLITE_OK; if( i==0 ){ sqlite3_result_int64(ctx, nodeGetRowid(pRtree, pNode, p->iCell)); }else if( i<=pRtree->nDim2 ){ @@ -172160,7 +206838,7 @@ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ &pCsr->pReadAux, 0); if( rc ) return rc; } - sqlite3_bind_int64(pCsr->pReadAux, 1, + sqlite3_bind_int64(pCsr->pReadAux, 1, nodeGetRowid(pRtree, pNode, p->iCell)); rc = sqlite3_step(pCsr->pReadAux); if( rc==SQLITE_ROW ){ @@ -172173,12 +206851,12 @@ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ } sqlite3_result_value(ctx, sqlite3_column_value(pCsr->pReadAux, i - pRtree->nDim2 + 1)); - } + } return SQLITE_OK; } -/* -** Use nodeAcquire() to obtain the leaf node containing the record with +/* +** Use nodeAcquire() to obtain the leaf node containing the record with ** rowid iRowid. If successful, set *ppLeaf to point to the node and ** return SQLITE_OK. If there is no such record in the table, set ** *ppLeaf to 0 and return SQLITE_OK. If an error occurs, set *ppLeaf @@ -172237,11 +206915,11 @@ static int deserializeGeometry(sqlite3_value *pValue, RtreeConstraint *pCons){ return SQLITE_OK; } -/* +/* ** Rtree virtual table module xFilter method. */ static int rtreeFilter( - sqlite3_vtab_cursor *pVtabCursor, + sqlite3_vtab_cursor *pVtabCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv ){ @@ -172251,17 +206929,11 @@ static int rtreeFilter( int ii; int rc = SQLITE_OK; int iCell = 0; - sqlite3_stmt *pStmt; rtreeReference(pRtree); /* Reset the cursor to the same state as rtreeOpen() leaves it in. */ - freeCursorConstraints(pCsr); - sqlite3_free(pCsr->aPoint); - pStmt = pCsr->pReadAux; - memset(pCsr, 0, sizeof(RtreeCursor)); - pCsr->base.pVtab = (sqlite3_vtab*)pRtree; - pCsr->pReadAux = pStmt; + resetCursor(pCsr); pCsr->iStrategy = idxNum; if( idxNum==1 ){ @@ -172270,7 +206942,15 @@ static int rtreeFilter( RtreeSearchPoint *p; /* Search point for the leaf */ i64 iRowid = sqlite3_value_int64(argv[0]); i64 iNode = 0; - rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode); + int eType = sqlite3_value_numeric_type(argv[0]); + if( eType==SQLITE_INTEGER + || (eType==SQLITE_FLOAT && sqlite3_value_double(argv[0])==iRowid) + ){ + rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode); + }else{ + rc = SQLITE_OK; + pLeaf = 0; + } if( rc==SQLITE_OK && pLeaf!=0 ){ p = rtreeSearchPointNew(pCsr, RTREE_ZERO, 0); assert( p!=0 ); /* Always returns pCsr->sPoint */ @@ -172284,12 +206964,12 @@ static int rtreeFilter( pCsr->atEOF = 1; } }else{ - /* Normal case - r-tree scan. Set up the RtreeCursor.aConstraint array - ** with the configured constraints. + /* Normal case - r-tree scan. Set up the RtreeCursor.aConstraint array + ** with the configured constraints. */ rc = nodeAcquire(pRtree, 1, 0, &pRoot); if( rc==SQLITE_OK && argc>0 ){ - pCsr->aConstraint = sqlite3_malloc(sizeof(RtreeConstraint)*argc); + pCsr->aConstraint = sqlite3_malloc64(sizeof(RtreeConstraint)*argc); pCsr->nConstraint = argc; if( !pCsr->aConstraint ){ rc = SQLITE_NOMEM; @@ -172300,6 +206980,7 @@ static int rtreeFilter( || (idxStr && (int)strlen(idxStr)==argc*2) ); for(ii=0; iiaConstraint[ii]; + int eType = sqlite3_value_numeric_type(argv[ii]); p->op = idxStr[ii*2]; p->iCoord = idxStr[ii*2+1]-'0'; if( p->op>=RTREE_MATCH ){ @@ -172314,20 +206995,45 @@ static int rtreeFilter( p->pInfo->nCoord = pRtree->nDim2; p->pInfo->anQueue = pCsr->anQueue; p->pInfo->mxLevel = pRtree->iDepth + 1; - }else{ + }else if( eType==SQLITE_INTEGER ){ + sqlite3_int64 iVal = sqlite3_value_int64(argv[ii]); +#ifdef SQLITE_RTREE_INT_ONLY + p->u.rValue = iVal; +#else + p->u.rValue = (double)iVal; + if( iVal>=((sqlite3_int64)1)<<48 + || iVal<=-(((sqlite3_int64)1)<<48) + ){ + if( p->op==RTREE_LT ) p->op = RTREE_LE; + if( p->op==RTREE_GT ) p->op = RTREE_GE; + } +#endif + }else if( eType==SQLITE_FLOAT ){ #ifdef SQLITE_RTREE_INT_ONLY p->u.rValue = sqlite3_value_int64(argv[ii]); #else p->u.rValue = sqlite3_value_double(argv[ii]); #endif + }else{ + p->u.rValue = RTREE_ZERO; + if( eType==SQLITE_NULL ){ + p->op = RTREE_FALSE; + }else if( p->op==RTREE_LT || p->op==RTREE_LE ){ + p->op = RTREE_TRUE; + }else{ + p->op = RTREE_FALSE; + } } } } } if( rc==SQLITE_OK ){ RtreeSearchPoint *pNew; + assert( pCsr->bPoint==0 ); /* Due to the resetCursor() call above */ pNew = rtreeSearchPointNew(pCsr, RTREE_ZERO, (u8)(pRtree->iDepth+1)); - if( pNew==0 ) return SQLITE_NOMEM; + if( NEVER(pNew==0) ){ /* Because pCsr->bPoint was FALSE */ + return SQLITE_NOMEM; + } pNew->id = 1; pNew->iCell = 0; pNew->eWithin = PARTLY_WITHIN; @@ -172346,7 +207052,7 @@ static int rtreeFilter( /* ** Rtree virtual table module xBestIndex method. There are three -** table scan strategies to choose from (in order from most to +** table scan strategies to choose from (in order from most to ** least desirable): ** ** idxNum idxStr Strategy @@ -172356,8 +207062,8 @@ static int rtreeFilter( ** ------------------------------------------------ ** ** If strategy 1 is used, then idxStr is not meaningful. If strategy -** 2 is used, idxStr is formatted to contain 2 bytes for each -** constraint used. The first two bytes of idxStr correspond to +** 2 is used, idxStr is formatted to contain 2 bytes for each +** constraint used. The first two bytes of idxStr correspond to ** the constraint in sqlite3_index_info.aConstraintUsage[] with ** (argvIndex==1) etc. ** @@ -172403,8 +207109,8 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ for(ii=0; iinConstraint && iIdx<(int)(sizeof(zIdxStr)-1); ii++){ struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii]; - if( bMatch==0 && p->usable - && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ + if( bMatch==0 && p->usable + && p->iColumn<=0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){ /* We have an equality constraint on the rowid. Use strategy 1. */ int jj; @@ -172417,11 +207123,11 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ pIdxInfo->aConstraintUsage[jj].omit = 1; /* This strategy involves a two rowid lookups on an B-Tree structures - ** and then a linear search of an R-Tree node. This should be - ** considered almost as quick as a direct rowid lookup (for which + ** and then a linear search of an R-Tree node. This should be + ** considered almost as quick as a direct rowid lookup (for which ** sqlite uses an internal cost of 0.0). It is expected to return ** a single row. - */ + */ pIdxInfo->estimatedCost = 30.0; pIdxInfo->estimatedRows = 1; pIdxInfo->idxFlags = SQLITE_INDEX_SCAN_UNIQUE; @@ -172433,21 +207139,22 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ || p->op==SQLITE_INDEX_CONSTRAINT_MATCH) ){ u8 op; + u8 doOmit = 1; switch( p->op ){ - case SQLITE_INDEX_CONSTRAINT_EQ: op = RTREE_EQ; break; - case SQLITE_INDEX_CONSTRAINT_GT: op = RTREE_GT; break; - case SQLITE_INDEX_CONSTRAINT_LE: op = RTREE_LE; break; - case SQLITE_INDEX_CONSTRAINT_LT: op = RTREE_LT; break; - case SQLITE_INDEX_CONSTRAINT_GE: op = RTREE_GE; break; - default: - assert( p->op==SQLITE_INDEX_CONSTRAINT_MATCH ); - op = RTREE_MATCH; - break; + case SQLITE_INDEX_CONSTRAINT_EQ: op = RTREE_EQ; doOmit = 0; break; + case SQLITE_INDEX_CONSTRAINT_GT: op = RTREE_GT; doOmit = 0; break; + case SQLITE_INDEX_CONSTRAINT_LE: op = RTREE_LE; break; + case SQLITE_INDEX_CONSTRAINT_LT: op = RTREE_LT; doOmit = 0; break; + case SQLITE_INDEX_CONSTRAINT_GE: op = RTREE_GE; break; + case SQLITE_INDEX_CONSTRAINT_MATCH: op = RTREE_MATCH; break; + default: op = 0; break; + } + if( op ){ + zIdxStr[iIdx++] = op; + zIdxStr[iIdx++] = (char)(p->iColumn - 1 + '0'); + pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2); + pIdxInfo->aConstraintUsage[ii].omit = doOmit; } - zIdxStr[iIdx++] = op; - zIdxStr[iIdx++] = (char)(p->iColumn - 1 + '0'); - pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2); - pIdxInfo->aConstraintUsage[ii].omit = 1; } } @@ -172483,11 +207190,11 @@ static RtreeDValue cellArea(Rtree *pRtree, RtreeCell *p){ #endif { switch( pRtree->nDim ){ - case 5: area = p->aCoord[9].i - p->aCoord[8].i; - case 4: area *= p->aCoord[7].i - p->aCoord[6].i; - case 3: area *= p->aCoord[5].i - p->aCoord[4].i; - case 2: area *= p->aCoord[3].i - p->aCoord[2].i; - default: area *= p->aCoord[1].i - p->aCoord[0].i; + case 5: area = (i64)p->aCoord[9].i - (i64)p->aCoord[8].i; + case 4: area *= (i64)p->aCoord[7].i - (i64)p->aCoord[6].i; + case 3: area *= (i64)p->aCoord[5].i - (i64)p->aCoord[4].i; + case 2: area *= (i64)p->aCoord[3].i - (i64)p->aCoord[2].i; + default: area *= (i64)p->aCoord[1].i - (i64)p->aCoord[0].i; } } return area; @@ -172537,8 +207244,8 @@ static int cellContains(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ for(ii=0; iinDim2; ii+=2){ RtreeCoord *a1 = &p1->aCoord[ii]; RtreeCoord *a2 = &p2->aCoord[ii]; - if( (!isInt && (a2[0].fa1[1].f)) - || ( isInt && (a2[0].ia1[1].i)) + if( (!isInt && (a2[0].fa1[1].f)) + || ( isInt && (a2[0].ia1[1].i)) ){ return 0; } @@ -172559,9 +207266,9 @@ static RtreeDValue cellGrowth(Rtree *pRtree, RtreeCell *p, RtreeCell *pCell){ } static RtreeDValue cellOverlap( - Rtree *pRtree, - RtreeCell *p, - RtreeCell *aCell, + Rtree *pRtree, + RtreeCell *p, + RtreeCell *aCell, int nCell ){ int ii; @@ -172610,7 +207317,7 @@ static int ChooseLeaf( int nCell = NCELL(pNode); RtreeCell cell; - RtreeNode *pChild; + RtreeNode *pChild = 0; RtreeCell *aCell = 0; @@ -172656,12 +207363,21 @@ static int AdjustTree( RtreeCell *pCell /* This cell was just inserted */ ){ RtreeNode *p = pNode; + int cnt = 0; + int rc; while( p->pParent ){ RtreeNode *pParent = p->pParent; RtreeCell cell; int iCell; - if( nodeParentIndex(pRtree, p, &iCell) ){ + cnt++; + if( NEVER(cnt>100) ){ + RTREE_IS_CORRUPT(pRtree); + return SQLITE_CORRUPT_VTAB; + } + rc = nodeParentIndex(pRtree, p, &iCell); + if( NEVER(rc!=SQLITE_OK) ){ + RTREE_IS_CORRUPT(pRtree); return SQLITE_CORRUPT_VTAB; } @@ -172670,7 +207386,7 @@ static int AdjustTree( cellUnion(pRtree, &cell, pCell); nodeOverwriteCell(pRtree, pParent, &cell, iCell); } - + p = pParent; } return SQLITE_OK; @@ -172701,7 +207417,7 @@ static int rtreeInsertCell(Rtree *, RtreeNode *, RtreeCell *, int); /* ** Arguments aIdx, aDistance and aSpare all point to arrays of size -** nIdx. The aIdx array contains the set of integers from 0 to +** nIdx. The aIdx array contains the set of integers from 0 to ** (nIdx-1) in no particular order. This function sorts the values ** in aIdx according to the indexed values in aDistance. For ** example, assuming the inputs: @@ -172717,9 +207433,9 @@ static int rtreeInsertCell(Rtree *, RtreeNode *, RtreeCell *, int); ** sorting algorithm. */ static void SortByDistance( - int *aIdx, - int nIdx, - RtreeDValue *aDistance, + int *aIdx, + int nIdx, + RtreeDValue *aDistance, int *aSpare ){ if( nIdx>1 ){ @@ -172773,7 +207489,7 @@ static void SortByDistance( /* ** Arguments aIdx, aCell and aSpare all point to arrays of size -** nIdx. The aIdx array contains the set of integers from 0 to +** nIdx. The aIdx array contains the set of integers from 0 to ** (nIdx-1) in no particular order. This function sorts the values ** in aIdx according to dimension iDim of the cells in aCell. The ** minimum value of dimension iDim is considered first, the @@ -172784,10 +207500,10 @@ static void SortByDistance( */ static void SortByDimension( Rtree *pRtree, - int *aIdx, - int nIdx, - int iDim, - RtreeCell *aCell, + int *aIdx, + int nIdx, + int iDim, + RtreeCell *aCell, int *aSpare ){ if( nIdx>1 ){ @@ -172858,9 +207574,9 @@ static int splitNodeStartree( int iBestSplit = 0; RtreeDValue fBestMargin = RTREE_ZERO; - int nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int)); + sqlite3_int64 nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int)); - aaSorted = (int **)sqlite3_malloc(nByte); + aaSorted = (int **)sqlite3_malloc64(nByte); if( !aaSorted ){ return SQLITE_NOMEM; } @@ -172884,8 +207600,8 @@ static int splitNodeStartree( int nLeft; for( - nLeft=RTREE_MINCELLS(pRtree); - nLeft<=(nCell-RTREE_MINCELLS(pRtree)); + nLeft=RTREE_MINCELLS(pRtree); + nLeft<=(nCell-RTREE_MINCELLS(pRtree)); nLeft++ ){ RtreeCell left; @@ -172940,21 +207656,26 @@ static int splitNodeStartree( static int updateMapping( - Rtree *pRtree, - i64 iRowid, - RtreeNode *pNode, + Rtree *pRtree, + i64 iRowid, + RtreeNode *pNode, int iHeight ){ int (*xSetMapping)(Rtree *, sqlite3_int64, sqlite3_int64); xSetMapping = ((iHeight==0)?rowidWrite:parentWrite); if( iHeight>0 ){ RtreeNode *pChild = nodeHashLookup(pRtree, iRowid); + RtreeNode *p; + for(p=pNode; p; p=p->pParent){ + if( p==pChild ) return SQLITE_CORRUPT_VTAB; + } if( pChild ){ nodeRelease(pRtree, pChild->pParent); nodeReference(pNode); pChild->pParent = pNode; } } + if( NEVER(pNode==0) ) return SQLITE_ERROR; return xSetMapping(pRtree, iRowid, pNode->iNode); } @@ -172978,10 +207699,10 @@ static int SplitNode( RtreeCell leftbbox; RtreeCell rightbbox; - /* Allocate an array and populate it with a copy of pCell and + /* Allocate an array and populate it with a copy of pCell and ** all cells from node pLeft. Then zero the original node. */ - aCell = sqlite3_malloc((sizeof(RtreeCell)+sizeof(int))*(nCell+1)); + aCell = sqlite3_malloc64((sizeof(RtreeCell)+sizeof(int))*(nCell+1)); if( !aCell ){ rc = SQLITE_NOMEM; goto splitnode_out; @@ -173044,11 +207765,12 @@ static int SplitNode( RtreeNode *pParent = pLeft->pParent; int iCell; rc = nodeParentIndex(pRtree, pLeft, &iCell); - if( rc==SQLITE_OK ){ + if( ALWAYS(rc==SQLITE_OK) ){ nodeOverwriteCell(pRtree, pParent, &leftbbox, iCell); rc = AdjustTree(pRtree, pParent, &leftbbox); + assert( rc==SQLITE_OK ); } - if( rc!=SQLITE_OK ){ + if( NEVER(rc!=SQLITE_OK) ){ goto splitnode_out; } } @@ -173095,14 +207817,14 @@ splitnode_out: } /* -** If node pLeaf is not the root of the r-tree and its pParent pointer is +** If node pLeaf is not the root of the r-tree and its pParent pointer is ** still NULL, load all ancestor nodes of pLeaf into memory and populate ** the pLeaf->pParent chain all the way up to the root node. ** ** This operation is required when a row is deleted (or updated - an update ** is implemented as a delete followed by an insert). SQLite provides the ** rowid of the row to delete, which can be used to find the leaf on which -** the entry resides (argument pLeaf). Once the leaf is located, this +** the entry resides (argument pLeaf). Once the leaf is located, this ** function is called to determine its ancestry. */ static int fixLeafParent(Rtree *pRtree, RtreeNode *pLeaf){ @@ -173123,13 +207845,16 @@ static int fixLeafParent(Rtree *pRtree, RtreeNode *pLeaf){ */ iNode = sqlite3_column_int64(pRtree->pReadParent, 0); for(pTest=pLeaf; pTest && pTest->iNode!=iNode; pTest=pTest->pParent); - if( !pTest ){ + if( pTest==0 ){ rc2 = nodeAcquire(pRtree, iNode, 0, &pChild->pParent); } } rc = sqlite3_reset(pRtree->pReadParent); if( rc==SQLITE_OK ) rc = rc2; - if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT_VTAB; + if( rc==SQLITE_OK && !pChild->pParent ){ + RTREE_IS_CORRUPT(pRtree); + rc = SQLITE_CORRUPT_VTAB; + } pChild = pChild->pParent; } return rc; @@ -173151,6 +207876,7 @@ static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){ pParent = pNode->pParent; pNode->pParent = 0; rc = deleteCell(pRtree, pParent, iCell, iHeight+1); + testcase( rc!=SQLITE_OK ); } rc2 = nodeRelease(pRtree, pParent); if( rc==SQLITE_OK ){ @@ -173173,7 +207899,7 @@ static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){ if( SQLITE_OK!=(rc = sqlite3_reset(pRtree->pDeleteParent)) ){ return rc; } - + /* Remove the node from the in-memory hash table and link it into ** the Rtree.pDeleted list. Its contents will be re-inserted later on. */ @@ -173188,9 +207914,9 @@ static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){ static int fixBoundingBox(Rtree *pRtree, RtreeNode *pNode){ RtreeNode *pParent = pNode->pParent; - int rc = SQLITE_OK; + int rc = SQLITE_OK; if( pParent ){ - int ii; + int ii; int nCell = NCELL(pNode); RtreeCell box; /* Bounding box for pNode */ nodeGetCell(pRtree, pNode, 0, &box); @@ -173245,9 +207971,9 @@ static int deleteCell(Rtree *pRtree, RtreeNode *pNode, int iCell, int iHeight){ } static int Reinsert( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell, + Rtree *pRtree, + RtreeNode *pNode, + RtreeCell *pCell, int iHeight ){ int *aOrder; @@ -173269,7 +207995,7 @@ static int Reinsert( /* Allocate the buffers used by this operation. The allocation is ** relinquished before this function returns. */ - aCell = (RtreeCell *)sqlite3_malloc(n * ( + aCell = (RtreeCell *)sqlite3_malloc64(n * ( sizeof(RtreeCell) + /* aCell array */ sizeof(int) + /* aOrder array */ sizeof(int) + /* aSpare array */ @@ -173301,7 +208027,7 @@ static int Reinsert( for(ii=0; iinDim; iDim++){ - RtreeDValue coord = (DCOORD(aCell[ii].aCoord[iDim*2+1]) - + RtreeDValue coord = (DCOORD(aCell[ii].aCoord[iDim*2+1]) - DCOORD(aCell[ii].aCoord[iDim*2])); aDistance[ii] += (coord-aCenterCoord[iDim])*(coord-aCenterCoord[iDim]); } @@ -173346,7 +208072,7 @@ static int Reinsert( } /* -** Insert cell pCell into node pNode. Node pNode is the head of a +** Insert cell pCell into node pNode. Node pNode is the head of a ** subtree iHeight high (leaf nodes have iHeight==0). */ static int rtreeInsertCell( @@ -173373,7 +208099,7 @@ static int rtreeInsertCell( } }else{ rc = AdjustTree(pRtree, pNode, pCell); - if( rc==SQLITE_OK ){ + if( ALWAYS(rc==SQLITE_OK) ){ if( iHeight==0 ){ rc = rowidWrite(pRtree, pCell->iRowid, pNode->iNode); }else{ @@ -173413,7 +208139,7 @@ static int reinsertNodeContent(Rtree *pRtree, RtreeNode *pNode){ /* ** Select a currently unused rowid for a new r-tree record. */ -static int newRowid(Rtree *pRtree, i64 *piRowid){ +static int rtreeNewRowid(Rtree *pRtree, i64 *piRowid){ int rc; sqlite3_bind_null(pRtree->pWriteRowid, 1); sqlite3_bind_null(pRtree->pWriteRowid, 2); @@ -173436,15 +208162,19 @@ static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){ /* Obtain a reference to the root node to initialize Rtree.iDepth */ rc = nodeAcquire(pRtree, 1, 0, &pRoot); - /* Obtain a reference to the leaf node that contains the entry - ** about to be deleted. + /* Obtain a reference to the leaf node that contains the entry + ** about to be deleted. */ if( rc==SQLITE_OK ){ rc = findLeafNode(pRtree, iDelete, &pLeaf, 0); } +#ifdef CORRUPT_DB + assert( pLeaf!=0 || rc!=SQLITE_OK || CORRUPT_DB ); +#endif + /* Delete the cell in question from the leaf node. */ - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK && pLeaf ){ int rc2; rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell); if( rc==SQLITE_OK ){ @@ -173464,18 +208194,18 @@ static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){ } /* Check if the root node now has exactly one child. If so, remove - ** it, schedule the contents of the child for reinsertion and + ** it, schedule the contents of the child for reinsertion and ** reduce the tree height by one. ** ** This is equivalent to copying the contents of the child into - ** the root node (the operation that Gutman's paper says to perform + ** the root node (the operation that Gutman's paper says to perform ** in this scenario). */ if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){ int rc2; RtreeNode *pChild = 0; i64 iChild = nodeGetRowid(pRtree, pRoot, 0); - rc = nodeAcquire(pRtree, iChild, pRoot, &pChild); + rc = nodeAcquire(pRtree, iChild, pRoot, &pChild); /* tag-20210916a */ if( rc==SQLITE_OK ){ rc = removeNode(pRtree, pChild, pRtree->iDepth-1); } @@ -173538,8 +208268,8 @@ static RtreeValue rtreeValueUp(sqlite3_value *v){ #endif /* !defined(SQLITE_RTREE_INT_ONLY) */ /* -** A constraint has failed while inserting a row into an rtree table. -** Assuming no OOM error occurs, this function sets the error message +** A constraint has failed while inserting a row into an rtree table. +** Assuming no OOM error occurs, this function sets the error message ** (at pRtree->base.zErrMsg) to an appropriate value and returns ** SQLITE_CONSTRAINT. ** @@ -173552,7 +208282,7 @@ static RtreeValue rtreeValueUp(sqlite3_value *v){ */ static int rtreeConstraintError(Rtree *pRtree, int iCol){ sqlite3_stmt *pStmt = 0; - char *zSql; + char *zSql; int rc; assert( iCol==0 || iCol%2 ); @@ -173589,9 +208319,9 @@ static int rtreeConstraintError(Rtree *pRtree, int iCol){ ** The xUpdate method for rtree module virtual tables. */ static int rtreeUpdate( - sqlite3_vtab *pVtab, - int nData, - sqlite3_value **aData, + sqlite3_vtab *pVtab, + int nData, + sqlite3_value **aData, sqlite_int64 *pRowid ){ Rtree *pRtree = (Rtree *)pVtab; @@ -173608,7 +208338,7 @@ static int rtreeUpdate( rtreeReference(pRtree); assert(nData>=1); - cell.iRowid = 0; /* Used only to suppress a compiler warning */ + memset(&cell, 0, sizeof(cell)); /* Constraint handling. A write operation on an r-tree table may return ** SQLITE_CONSTRAINT for two reasons: @@ -173658,7 +208388,7 @@ static int rtreeUpdate( } } - /* If a rowid value was supplied, check if it is already present in + /* If a rowid value was supplied, check if it is already present in ** the table. If so, the constraint has failed. */ if( sqlite3_value_type(aData[2])!=SQLITE_NULL ){ cell.iRowid = sqlite3_value_int64(aData[2]); @@ -173700,7 +208430,7 @@ static int rtreeUpdate( /* Figure out the rowid of the new row. */ if( bHaveRowid==0 ){ - rc = newRowid(pRtree, &cell.iRowid); + rc = rtreeNewRowid(pRtree, &cell.iRowid); } *pRowid = cell.iRowid; @@ -173716,7 +208446,7 @@ static int rtreeUpdate( rc = rc2; } } - if( pRtree->nAux ){ + if( rc==SQLITE_OK && pRtree->nAux ){ sqlite3_stmt *pUp = pRtree->pWriteAux; int jj; sqlite3_bind_int64(pUp, 1, *pRowid); @@ -173764,8 +208494,8 @@ static int rtreeRename(sqlite3_vtab *pVtab, const char *zNewName){ "ALTER TABLE %Q.'%q_node' RENAME TO \"%w_node\";" "ALTER TABLE %Q.'%q_parent' RENAME TO \"%w_parent\";" "ALTER TABLE %Q.'%q_rowid' RENAME TO \"%w_rowid\";" - , pRtree->zDb, pRtree->zName, zNewName - , pRtree->zDb, pRtree->zName, zNewName + , pRtree->zDb, pRtree->zName, zNewName + , pRtree->zDb, pRtree->zName, zNewName , pRtree->zDb, pRtree->zName, zNewName ); if( zSql ){ @@ -173780,8 +208510,8 @@ static int rtreeRename(sqlite3_vtab *pVtab, const char *zNewName){ ** The xSavepoint method. ** ** This module does not need to do anything to support savepoints. However, -** it uses this hook to close any open blob handle. This is done because a -** DROP TABLE command - which fortunately always opens a savepoint - cannot +** it uses this hook to close any open blob handle. This is done because a +** DROP TABLE command - which fortunately always opens a savepoint - cannot ** succeed if there are any open blob handles. i.e. if the blob handle were ** not closed here, the following would fail: ** @@ -173792,7 +208522,7 @@ static int rtreeRename(sqlite3_vtab *pVtab, const char *zNewName){ */ static int rtreeSavepoint(sqlite3_vtab *pVtab, int iSavepoint){ Rtree *pRtree = (Rtree *)pVtab; - int iwt = pRtree->inWrTrans; + u8 iwt = pRtree->inWrTrans; UNUSED_PARAMETER(iSavepoint); pRtree->inWrTrans = 0; nodeBlobReset(pRtree); @@ -173810,7 +208540,7 @@ static int rtreeQueryStat1(sqlite3 *db, Rtree *pRtree){ char *zSql; sqlite3_stmt *p; int rc; - i64 nRow = 0; + i64 nRow = RTREE_MIN_ROWEST; rc = sqlite3_table_column_metadata( db, pRtree->zDb, "sqlite_stat1",0,0,0,0,0,0 @@ -173827,25 +208557,31 @@ static int rtreeQueryStat1(sqlite3 *db, Rtree *pRtree){ if( rc==SQLITE_OK ){ if( sqlite3_step(p)==SQLITE_ROW ) nRow = sqlite3_column_int64(p, 0); rc = sqlite3_finalize(p); - }else if( rc!=SQLITE_NOMEM ){ - rc = SQLITE_OK; - } - - if( rc==SQLITE_OK ){ - if( nRow==0 ){ - pRtree->nRowEst = RTREE_DEFAULT_ROWEST; - }else{ - pRtree->nRowEst = MAX(nRow, RTREE_MIN_ROWEST); - } } sqlite3_free(zSql); } - + pRtree->nRowEst = MAX(nRow, RTREE_MIN_ROWEST); return rc; } + +/* +** Return true if zName is the extension on one of the shadow tables used +** by this module. +*/ +static int rtreeShadowName(const char *zName){ + static const char *azName[] = { + "node", "parent", "rowid" + }; + unsigned int i; + for(i=0; idb = db; @@ -173953,8 +208691,7 @@ static int rtreeSqlInit( } zSql = sqlite3_mprintf(zFormat, zDb, zPrefix); if( zSql ){ - rc = sqlite3_prepare_v3(db, zSql, -1, SQLITE_PREPARE_PERSISTENT, - appStmt[i], 0); + rc = sqlite3_prepare_v3(db, zSql, -1, f, appStmt[i], 0); }else{ rc = SQLITE_NOMEM; } @@ -173973,15 +208710,21 @@ static int rtreeSqlInit( sqlite3_str_appendf(p, "UPDATE \"%w\".\"%w_rowid\"SET ", zDb, zPrefix); for(ii=0; iinAux; ii++){ if( ii ) sqlite3_str_append(p, ",", 1); - sqlite3_str_appendf(p,"a%d=?%d",ii,ii+2); +#ifdef SQLITE_ENABLE_GEOPOLY + if( iinAuxNotNull ){ + sqlite3_str_appendf(p,"a%d=coalesce(?%d,a%d)",ii,ii+2,ii); + }else +#endif + { + sqlite3_str_appendf(p,"a%d=?%d",ii,ii+2); + } } sqlite3_str_appendf(p, " WHERE rowid=?1"); zSql = sqlite3_str_finish(p); if( zSql==0 ){ rc = SQLITE_NOMEM; }else{ - rc = sqlite3_prepare_v3(db, zSql, -1, SQLITE_PREPARE_PERSISTENT, - &pRtree->pWriteAux, 0); + rc = sqlite3_prepare_v3(db, zSql, -1, f, &pRtree->pWriteAux, 0); sqlite3_free(zSql); } } @@ -174022,9 +208765,9 @@ static int getIntFromStmt(sqlite3 *db, const char *zSql, int *piVal){ ** table already exists. In this case the node-size is determined by inspecting ** the root node of the tree. ** -** Otherwise, for an xCreate(), use 64 bytes less than the database page-size. -** This ensures that each node is stored on a single database page. If the -** database page-size is so large that more than RTREE_MAXCELLS entries +** Otherwise, for an xCreate(), use 64 bytes less than the database page-size. +** This ensures that each node is stored on a single database page. If the +** database page-size is so large that more than RTREE_MAXCELLS entries ** would fit in a single node, use a smaller node-size. */ static int getNodeSize( @@ -174057,6 +208800,7 @@ static int getNodeSize( *pzErr = sqlite3_mprintf("%s", sqlite3_errmsg(db)); }else if( pRtree->iNodeSize<(512-64) ){ rc = SQLITE_CORRUPT_VTAB; + RTREE_IS_CORRUPT(pRtree); *pzErr = sqlite3_mprintf("undersize RTree blobs in \"%q_node\"", pRtree->zName); } @@ -174066,7 +208810,15 @@ static int getNodeSize( return rc; } -/* +/* +** Return the length of a token +*/ +static int rtreeTokenLength(const char *z){ + int dummy = 0; + return sqlite3GetToken((const unsigned char*)z,&dummy); +} + +/* ** This function is the implementation of both the xConnect and xCreate ** methods of the r-tree virtual table. ** @@ -174102,8 +208854,8 @@ static int rtreeInit( }; assert( RTREE_MAX_AUX_COLUMN<256 ); /* Aux columns counted by a u8 */ - if( argc>RTREE_MAX_AUX_COLUMN+3 ){ - *pzErr = sqlite3_mprintf("%s", aErrMsg[3]); + if( argc<6 || argc>RTREE_MAX_AUX_COLUMN+3 ){ + *pzErr = sqlite3_mprintf("%s", aErrMsg[2 + (argc>=6)]); return SQLITE_ERROR; } @@ -174112,7 +208864,7 @@ static int rtreeInit( /* Allocate the sqlite3_vtab structure */ nDb = (int)strlen(argv[1]); nName = (int)strlen(argv[2]); - pRtree = (Rtree *)sqlite3_malloc(sizeof(Rtree)+nDb+nName+2); + pRtree = (Rtree *)sqlite3_malloc64(sizeof(Rtree)+nDb+nName+2); if( !pRtree ){ return SQLITE_NOMEM; } @@ -174131,16 +208883,20 @@ static int rtreeInit( ** the r-tree table schema. */ pSql = sqlite3_str_new(db); - sqlite3_str_appendf(pSql, "CREATE TABLE x(%s", argv[3]); + sqlite3_str_appendf(pSql, "CREATE TABLE x(%.*s INT", + rtreeTokenLength(argv[3]), argv[3]); for(ii=4; iinAux++; - sqlite3_str_appendf(pSql, ",%s", argv[ii]+1); + sqlite3_str_appendf(pSql, ",%.*s", rtreeTokenLength(zArg+1), zArg+1); }else if( pRtree->nAux>0 ){ break; }else{ + static const char *azFormat[] = {",%.*s REAL", ",%.*s INT"}; pRtree->nDim2++; - sqlite3_str_appendf(pSql, ",%s", argv[ii]); + sqlite3_str_appendf(pSql, azFormat[eCoordType], + rtreeTokenLength(zArg), zArg); } } sqlite3_str_appendf(pSql, ");"); @@ -174205,53 +208961,50 @@ rtreeInit_fail: ** ** The human readable string takes the form of a Tcl list with one ** entry for each cell in the r-tree node. Each entry is itself a -** list, containing the 8-byte rowid/pageno followed by the +** list, containing the 8-byte rowid/pageno followed by the ** *2 coordinates. */ static void rtreenode(sqlite3_context *ctx, int nArg, sqlite3_value **apArg){ - char *zText = 0; RtreeNode node; Rtree tree; int ii; + int nData; + int errCode; + sqlite3_str *pOut; UNUSED_PARAMETER(nArg); memset(&node, 0, sizeof(RtreeNode)); memset(&tree, 0, sizeof(Rtree)); tree.nDim = (u8)sqlite3_value_int(apArg[0]); + if( tree.nDim<1 || tree.nDim>5 ) return; tree.nDim2 = tree.nDim*2; tree.nBytesPerCell = 8 + 8 * tree.nDim; node.zData = (u8 *)sqlite3_value_blob(apArg[1]); + if( node.zData==0 ) return; + nData = sqlite3_value_bytes(apArg[1]); + if( nData<4 ) return; + if( nData0 ) sqlite3_str_append(pOut, " ", 1); + sqlite3_str_appendf(pOut, "{%lld", cell.iRowid); for(jj=0; jjrc = SQLITE_NOMEM; }else{ - pCheck->zReport = sqlite3_mprintf("%z%s%z", + pCheck->zReport = sqlite3_mprintf("%z%s%z", pCheck->zReport, (pCheck->zReport ? "\n" : ""), z ); if( pCheck->zReport==0 ){ @@ -174380,10 +209138,9 @@ static void rtreeCheckAppendMsg(RtreeCheck *pCheck, const char *zFmt, ...){ static u8 *rtreeCheckGetNode(RtreeCheck *pCheck, i64 iNode, int *pnNode){ u8 *pRet = 0; /* Return value */ - assert( pCheck->rc==SQLITE_OK ); - if( pCheck->pGetNode==0 ){ + if( pCheck->rc==SQLITE_OK && pCheck->pGetNode==0 ){ pCheck->pGetNode = rtreeCheckPrepare(pCheck, - "SELECT data FROM %Q.'%q_node' WHERE nodeno=?", + "SELECT data FROM %Q.'%q_node' WHERE nodeno=?", pCheck->zDb, pCheck->zTab ); } @@ -174393,7 +209150,7 @@ static u8 *rtreeCheckGetNode(RtreeCheck *pCheck, i64 iNode, int *pnNode){ if( sqlite3_step(pCheck->pGetNode)==SQLITE_ROW ){ int nNode = sqlite3_column_bytes(pCheck->pGetNode, 0); const u8 *pNode = (const u8*)sqlite3_column_blob(pCheck->pGetNode, 0); - pRet = sqlite3_malloc(nNode); + pRet = sqlite3_malloc64(nNode); if( pRet==0 ){ pCheck->rc = SQLITE_NOMEM; }else{ @@ -174453,7 +209210,7 @@ static void rtreeCheckMapping( }else if( rc==SQLITE_ROW ){ i64 ii = sqlite3_column_int64(pStmt, 0); if( ii!=iVal ){ - rtreeCheckAppendMsg(pCheck, + rtreeCheckAppendMsg(pCheck, "Found (%lld -> %lld) in %s table, expected (%lld -> %lld)", iKey, ii, (bLeaf ? "%_rowid" : "%_parent"), iKey, iVal ); @@ -174469,13 +209226,13 @@ static void rtreeCheckMapping( ** if they are not. ** ** Additionally, if pParent is not NULL, then it is assumed to point to -** the array of coordinates on the parent page that bound the page +** the array of coordinates on the parent page that bound the page ** containing pCell. In this case it is also verified that the two ** sets of coordinates are mutually consistent and an error message added ** to the RtreeCheck object if they are not. */ static void rtreeCheckCellCoord( - RtreeCheck *pCheck, + RtreeCheck *pCheck, i64 iNode, /* Node id to use in error messages */ int iCell, /* Cell number to use in error messages */ u8 *pCell, /* Pointer to cell coordinates */ @@ -174491,7 +209248,7 @@ static void rtreeCheckCellCoord( /* printf("%e, %e\n", c1.u.f, c2.u.f); */ if( pCheck->bInt ? c1.i>c2.i : c1.f>c2.f ){ - rtreeCheckAppendMsg(pCheck, + rtreeCheckAppendMsg(pCheck, "Dimension %d of cell %d on node %lld is corrupt", i, iCell, iNode ); } @@ -174500,10 +209257,10 @@ static void rtreeCheckCellCoord( readCoord(&pParent[4*2*i], &p1); readCoord(&pParent[4*(2*i + 1)], &p2); - if( (pCheck->bInt ? c1.ibInt ? c1.ibInt ? c2.i>p2.i : c2.f>p2.f) ){ - rtreeCheckAppendMsg(pCheck, + rtreeCheckAppendMsg(pCheck, "Dimension %d of cell %d on node %lld is corrupt relative to parent" , i, iCell, iNode ); @@ -174535,7 +209292,7 @@ static void rtreeCheckNode( aNode = rtreeCheckGetNode(pCheck, iNode, &nNode); if( aNode ){ if( nNode<4 ){ - rtreeCheckAppendMsg(pCheck, + rtreeCheckAppendMsg(pCheck, "Node %lld is too small (%d bytes)", iNode, nNode ); }else{ @@ -174551,8 +209308,8 @@ static void rtreeCheckNode( } nCell = readInt16(&aNode[2]); if( (4 + nCell*(8 + pCheck->nDim*2*4))>nNode ){ - rtreeCheckAppendMsg(pCheck, - "Node %lld is too small for cell count of %d (%d bytes)", + rtreeCheckAppendMsg(pCheck, + "Node %lld is too small for cell count of %d (%d bytes)", iNode, nCell, nNode ); }else{ @@ -174638,8 +209395,10 @@ static int rtreeCheckTable( if( pStmt ){ nAux = sqlite3_column_count(pStmt) - 2; sqlite3_finalize(pStmt); + }else + if( check.rc!=SQLITE_NOMEM ){ + check.rc = SQLITE_OK; } - check.rc = SQLITE_OK; } /* Find number of dimensions in the rtree table. */ @@ -174695,11 +209454,11 @@ static int rtreeCheckTable( ** b) unless the cell is on the root node, that the cell is bounded ** by the parent cell on the parent node. ** -** c) for leaf nodes, that there is an entry in the %_rowid -** table corresponding to the cell's rowid value that +** c) for leaf nodes, that there is an entry in the %_rowid +** table corresponding to the cell's rowid value that ** points to the correct node. ** -** d) for cells on non-leaf nodes, that there is an entry in the +** d) for cells on non-leaf nodes, that there is an entry in the ** %_parent table mapping from the cell's child node to the ** node that it resides on. ** @@ -174708,17 +209467,17 @@ static int rtreeCheckTable( ** is a leaf cell that corresponds to each entry in the %_rowid table. ** ** 3. That there are the same number of entries in the %_parent table -** as there are non-leaf cells in the r-tree structure, and that -** there is a non-leaf cell that corresponds to each entry in the +** as there are non-leaf cells in the r-tree structure, and that +** there is a non-leaf cell that corresponds to each entry in the ** %_parent table. */ static void rtreecheck( - sqlite3_context *ctx, - int nArg, + sqlite3_context *ctx, + int nArg, sqlite3_value **apArg ){ if( nArg!=1 && nArg!=2 ){ - sqlite3_result_error(ctx, + sqlite3_result_error(ctx, "wrong number of arguments to function rtreecheck()", -1 ); }else{ @@ -174742,10 +209501,1853 @@ static void rtreecheck( } } +/* Conditionally include the geopoly code */ +#ifdef SQLITE_ENABLE_GEOPOLY +/************** Include geopoly.c in the middle of rtree.c *******************/ +/************** Begin file geopoly.c *****************************************/ +/* +** 2018-05-25 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file implements an alternative R-Tree virtual table that +** uses polygons to express the boundaries of 2-dimensional objects. +** +** This file is #include-ed onto the end of "rtree.c" so that it has +** access to all of the R-Tree internals. +*/ +/* #include */ + +/* Enable -DGEOPOLY_ENABLE_DEBUG for debugging facilities */ +#ifdef GEOPOLY_ENABLE_DEBUG + static int geo_debug = 0; +# define GEODEBUG(X) if(geo_debug)printf X +#else +# define GEODEBUG(X) +#endif + +/* Character class routines */ +#ifdef sqlite3Isdigit + /* Use the SQLite core versions if this routine is part of the + ** SQLite amalgamation */ +# define safe_isdigit(x) sqlite3Isdigit(x) +# define safe_isalnum(x) sqlite3Isalnum(x) +# define safe_isxdigit(x) sqlite3Isxdigit(x) +#else + /* Use the standard library for separate compilation */ +#include /* amalgamator: keep */ +# define safe_isdigit(x) isdigit((unsigned char)(x)) +# define safe_isalnum(x) isalnum((unsigned char)(x)) +# define safe_isxdigit(x) isxdigit((unsigned char)(x)) +#endif + +#ifndef JSON_NULL /* The following stuff repeats things found in json1 */ +/* +** Growing our own isspace() routine this way is twice as fast as +** the library isspace() function. +*/ +static const char geopolyIsSpace[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +}; +#define fast_isspace(x) (geopolyIsSpace[(unsigned char)x]) +#endif /* JSON NULL - back to original code */ + +/* Compiler and version */ +#ifndef GCC_VERSION +#if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC) +# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__) +#else +# define GCC_VERSION 0 +#endif +#endif +#ifndef MSVC_VERSION +#if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC) +# define MSVC_VERSION _MSC_VER +#else +# define MSVC_VERSION 0 +#endif +#endif + +/* Datatype for coordinates +*/ +typedef float GeoCoord; + +/* +** Internal representation of a polygon. +** +** The polygon consists of a sequence of vertexes. There is a line +** segment between each pair of vertexes, and one final segment from +** the last vertex back to the first. (This differs from the GeoJSON +** standard in which the final vertex is a repeat of the first.) +** +** The polygon follows the right-hand rule. The area to the right of +** each segment is "outside" and the area to the left is "inside". +** +** The on-disk representation consists of a 4-byte header followed by +** the values. The 4-byte header is: +** +** encoding (1 byte) 0=big-endian, 1=little-endian +** nvertex (3 bytes) Number of vertexes as a big-endian integer +** +** Enough space is allocated for 4 coordinates, to work around over-zealous +** warnings coming from some compiler (notably, clang). In reality, the size +** of each GeoPoly memory allocate is adjusted as necessary so that the +** GeoPoly.a[] array at the end is the appropriate size. +*/ +typedef struct GeoPoly GeoPoly; +struct GeoPoly { + int nVertex; /* Number of vertexes */ + unsigned char hdr[4]; /* Header for on-disk representation */ + GeoCoord a[8]; /* 2*nVertex values. X (longitude) first, then Y */ +}; + +/* The size of a memory allocation needed for a GeoPoly object sufficient +** to hold N coordinate pairs. +*/ +#define GEOPOLY_SZ(N) (sizeof(GeoPoly) + sizeof(GeoCoord)*2*((N)-4)) + +/* Macros to access coordinates of a GeoPoly. +** We have to use these macros, rather than just say p->a[i] in order +** to silence (incorrect) UBSAN warnings if the array index is too large. +*/ +#define GeoX(P,I) (((GeoCoord*)(P)->a)[(I)*2]) +#define GeoY(P,I) (((GeoCoord*)(P)->a)[(I)*2+1]) + + +/* +** State of a parse of a GeoJSON input. +*/ +typedef struct GeoParse GeoParse; +struct GeoParse { + const unsigned char *z; /* Unparsed input */ + int nVertex; /* Number of vertexes in a[] */ + int nAlloc; /* Space allocated to a[] */ + int nErr; /* Number of errors encountered */ + GeoCoord *a; /* Array of vertexes. From sqlite3_malloc64() */ +}; + +/* Do a 4-byte byte swap */ +static void geopolySwab32(unsigned char *a){ + unsigned char t = a[0]; + a[0] = a[3]; + a[3] = t; + t = a[1]; + a[1] = a[2]; + a[2] = t; +} + +/* Skip whitespace. Return the next non-whitespace character. */ +static char geopolySkipSpace(GeoParse *p){ + while( fast_isspace(p->z[0]) ) p->z++; + return p->z[0]; +} + +/* Parse out a number. Write the value into *pVal if pVal!=0. +** return non-zero on success and zero if the next token is not a number. +*/ +static int geopolyParseNumber(GeoParse *p, GeoCoord *pVal){ + char c = geopolySkipSpace(p); + const unsigned char *z = p->z; + int j = 0; + int seenDP = 0; + int seenE = 0; + if( c=='-' ){ + j = 1; + c = z[j]; + } + if( c=='0' && z[j+1]>='0' && z[j+1]<='9' ) return 0; + for(;; j++){ + c = z[j]; + if( safe_isdigit(c) ) continue; + if( c=='.' ){ + if( z[j-1]=='-' ) return 0; + if( seenDP ) return 0; + seenDP = 1; + continue; + } + if( c=='e' || c=='E' ){ + if( z[j-1]<'0' ) return 0; + if( seenE ) return -1; + seenDP = seenE = 1; + c = z[j+1]; + if( c=='+' || c=='-' ){ + j++; + c = z[j+1]; + } + if( c<'0' || c>'9' ) return 0; + continue; + } + break; + } + if( z[j-1]<'0' ) return 0; + if( pVal ){ +#ifdef SQLITE_AMALGAMATION + /* The sqlite3AtoF() routine is much much faster than atof(), if it + ** is available */ + double r; + (void)sqlite3AtoF((const char*)p->z, &r, j, SQLITE_UTF8); + *pVal = r; +#else + *pVal = (GeoCoord)atof((const char*)p->z); +#endif + } + p->z += j; + return 1; +} + +/* +** If the input is a well-formed JSON array of coordinates with at least +** four coordinates and where each coordinate is itself a two-value array, +** then convert the JSON into a GeoPoly object and return a pointer to +** that object. +** +** If any error occurs, return NULL. +*/ +static GeoPoly *geopolyParseJson(const unsigned char *z, int *pRc){ + GeoParse s; + int rc = SQLITE_OK; + memset(&s, 0, sizeof(s)); + s.z = z; + if( geopolySkipSpace(&s)=='[' ){ + s.z++; + while( geopolySkipSpace(&s)=='[' ){ + int ii = 0; + char c; + s.z++; + if( s.nVertex>=s.nAlloc ){ + GeoCoord *aNew; + s.nAlloc = s.nAlloc*2 + 16; + aNew = sqlite3_realloc64(s.a, s.nAlloc*sizeof(GeoCoord)*2 ); + if( aNew==0 ){ + rc = SQLITE_NOMEM; + s.nErr++; + break; + } + s.a = aNew; + } + while( geopolyParseNumber(&s, ii<=1 ? &s.a[s.nVertex*2+ii] : 0) ){ + ii++; + if( ii==2 ) s.nVertex++; + c = geopolySkipSpace(&s); + s.z++; + if( c==',' ) continue; + if( c==']' && ii>=2 ) break; + s.nErr++; + rc = SQLITE_ERROR; + goto parse_json_err; + } + if( geopolySkipSpace(&s)==',' ){ + s.z++; + continue; + } + break; + } + if( geopolySkipSpace(&s)==']' + && s.nVertex>=4 + && s.a[0]==s.a[s.nVertex*2-2] + && s.a[1]==s.a[s.nVertex*2-1] + && (s.z++, geopolySkipSpace(&s)==0) + ){ + GeoPoly *pOut; + int x = 1; + s.nVertex--; /* Remove the redundant vertex at the end */ + pOut = sqlite3_malloc64( GEOPOLY_SZ((sqlite3_int64)s.nVertex) ); + x = 1; + if( pOut==0 ) goto parse_json_err; + pOut->nVertex = s.nVertex; + memcpy(pOut->a, s.a, s.nVertex*2*sizeof(GeoCoord)); + pOut->hdr[0] = *(unsigned char*)&x; + pOut->hdr[1] = (s.nVertex>>16)&0xff; + pOut->hdr[2] = (s.nVertex>>8)&0xff; + pOut->hdr[3] = s.nVertex&0xff; + sqlite3_free(s.a); + if( pRc ) *pRc = SQLITE_OK; + return pOut; + }else{ + s.nErr++; + rc = SQLITE_ERROR; + } + } +parse_json_err: + if( pRc ) *pRc = rc; + sqlite3_free(s.a); + return 0; +} + +/* +** Given a function parameter, try to interpret it as a polygon, either +** in the binary format or JSON text. Compute a GeoPoly object and +** return a pointer to that object. Or if the input is not a well-formed +** polygon, put an error message in sqlite3_context and return NULL. +*/ +static GeoPoly *geopolyFuncParam( + sqlite3_context *pCtx, /* Context for error messages */ + sqlite3_value *pVal, /* The value to decode */ + int *pRc /* Write error here */ +){ + GeoPoly *p = 0; + int nByte; + testcase( pCtx==0 ); + if( sqlite3_value_type(pVal)==SQLITE_BLOB + && (nByte = sqlite3_value_bytes(pVal))>=(int)(4+6*sizeof(GeoCoord)) + ){ + const unsigned char *a = sqlite3_value_blob(pVal); + int nVertex; + if( a==0 ){ + if( pCtx ) sqlite3_result_error_nomem(pCtx); + return 0; + } + nVertex = (a[1]<<16) + (a[2]<<8) + a[3]; + if( (a[0]==0 || a[0]==1) + && (nVertex*2*sizeof(GeoCoord) + 4)==(unsigned int)nByte + ){ + p = sqlite3_malloc64( sizeof(*p) + (nVertex-1)*2*sizeof(GeoCoord) ); + if( p==0 ){ + if( pRc ) *pRc = SQLITE_NOMEM; + if( pCtx ) sqlite3_result_error_nomem(pCtx); + }else{ + int x = 1; + p->nVertex = nVertex; + memcpy(p->hdr, a, nByte); + if( a[0] != *(unsigned char*)&x ){ + int ii; + for(ii=0; iihdr[0] ^= 1; + } + } + } + if( pRc ) *pRc = SQLITE_OK; + return p; + }else if( sqlite3_value_type(pVal)==SQLITE_TEXT ){ + const unsigned char *zJson = sqlite3_value_text(pVal); + if( zJson==0 ){ + if( pRc ) *pRc = SQLITE_NOMEM; + return 0; + } + return geopolyParseJson(zJson, pRc); + }else{ + if( pRc ) *pRc = SQLITE_ERROR; + return 0; + } +} + +/* +** Implementation of the geopoly_blob(X) function. +** +** If the input is a well-formed Geopoly BLOB or JSON string +** then return the BLOB representation of the polygon. Otherwise +** return NULL. +*/ +static void geopolyBlobFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyFuncParam(context, argv[0], 0); + (void)argc; + if( p ){ + sqlite3_result_blob(context, p->hdr, + 4+8*p->nVertex, SQLITE_TRANSIENT); + sqlite3_free(p); + } +} + +/* +** SQL function: geopoly_json(X) +** +** Interpret X as a polygon and render it as a JSON array +** of coordinates. Or, if X is not a valid polygon, return NULL. +*/ +static void geopolyJsonFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyFuncParam(context, argv[0], 0); + (void)argc; + if( p ){ + sqlite3 *db = sqlite3_context_db_handle(context); + sqlite3_str *x = sqlite3_str_new(db); + int i; + sqlite3_str_append(x, "[", 1); + for(i=0; inVertex; i++){ + sqlite3_str_appendf(x, "[%!g,%!g],", GeoX(p,i), GeoY(p,i)); + } + sqlite3_str_appendf(x, "[%!g,%!g]]", GeoX(p,0), GeoY(p,0)); + sqlite3_result_text(context, sqlite3_str_finish(x), -1, sqlite3_free); + sqlite3_free(p); + } +} + +/* +** SQL function: geopoly_svg(X, ....) +** +** Interpret X as a polygon and render it as a SVG . +** Additional arguments are added as attributes to the . +*/ +static void geopolySvgFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p; + if( argc<1 ) return; + p = geopolyFuncParam(context, argv[0], 0); + if( p ){ + sqlite3 *db = sqlite3_context_db_handle(context); + sqlite3_str *x = sqlite3_str_new(db); + int i; + char cSep = '\''; + sqlite3_str_appendf(x, ""); + sqlite3_result_text(context, sqlite3_str_finish(x), -1, sqlite3_free); + sqlite3_free(p); + } +} + +/* +** SQL Function: geopoly_xform(poly, A, B, C, D, E, F) +** +** Transform and/or translate a polygon as follows: +** +** x1 = A*x0 + B*y0 + E +** y1 = C*x0 + D*y0 + F +** +** For a translation: +** +** geopoly_xform(poly, 1, 0, 0, 1, x-offset, y-offset) +** +** Rotate by R around the point (0,0): +** +** geopoly_xform(poly, cos(R), sin(R), -sin(R), cos(R), 0, 0) +*/ +static void geopolyXformFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyFuncParam(context, argv[0], 0); + double A = sqlite3_value_double(argv[1]); + double B = sqlite3_value_double(argv[2]); + double C = sqlite3_value_double(argv[3]); + double D = sqlite3_value_double(argv[4]); + double E = sqlite3_value_double(argv[5]); + double F = sqlite3_value_double(argv[6]); + GeoCoord x1, y1, x0, y0; + int ii; + (void)argc; + if( p ){ + for(ii=0; iinVertex; ii++){ + x0 = GeoX(p,ii); + y0 = GeoY(p,ii); + x1 = (GeoCoord)(A*x0 + B*y0 + E); + y1 = (GeoCoord)(C*x0 + D*y0 + F); + GeoX(p,ii) = x1; + GeoY(p,ii) = y1; + } + sqlite3_result_blob(context, p->hdr, + 4+8*p->nVertex, SQLITE_TRANSIENT); + sqlite3_free(p); + } +} + +/* +** Compute the area enclosed by the polygon. +** +** This routine can also be used to detect polygons that rotate in +** the wrong direction. Polygons are suppose to be counter-clockwise (CCW). +** This routine returns a negative value for clockwise (CW) polygons. +*/ +static double geopolyArea(GeoPoly *p){ + double rArea = 0.0; + int ii; + for(ii=0; iinVertex-1; ii++){ + rArea += (GeoX(p,ii) - GeoX(p,ii+1)) /* (x0 - x1) */ + * (GeoY(p,ii) + GeoY(p,ii+1)) /* (y0 + y1) */ + * 0.5; + } + rArea += (GeoX(p,ii) - GeoX(p,0)) /* (xN - x0) */ + * (GeoY(p,ii) + GeoY(p,0)) /* (yN + y0) */ + * 0.5; + return rArea; +} + +/* +** Implementation of the geopoly_area(X) function. +** +** If the input is a well-formed Geopoly BLOB then return the area +** enclosed by the polygon. If the polygon circulates clockwise instead +** of counterclockwise (as it should) then return the negative of the +** enclosed area. Otherwise return NULL. +*/ +static void geopolyAreaFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyFuncParam(context, argv[0], 0); + (void)argc; + if( p ){ + sqlite3_result_double(context, geopolyArea(p)); + sqlite3_free(p); + } +} + +/* +** Implementation of the geopoly_ccw(X) function. +** +** If the rotation of polygon X is clockwise (incorrect) instead of +** counter-clockwise (the correct winding order according to RFC7946) +** then reverse the order of the vertexes in polygon X. +** +** In other words, this routine returns a CCW polygon regardless of the +** winding order of its input. +** +** Use this routine to sanitize historical inputs that that sometimes +** contain polygons that wind in the wrong direction. +*/ +static void geopolyCcwFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyFuncParam(context, argv[0], 0); + (void)argc; + if( p ){ + if( geopolyArea(p)<0.0 ){ + int ii, jj; + for(ii=1, jj=p->nVertex-1; iihdr, + 4+8*p->nVertex, SQLITE_TRANSIENT); + sqlite3_free(p); + } +} + +#define GEOPOLY_PI 3.1415926535897932385 + +/* Fast approximation for sine(X) for X between -0.5*pi and 2*pi +*/ +static double geopolySine(double r){ + assert( r>=-0.5*GEOPOLY_PI && r<=2.0*GEOPOLY_PI ); + if( r>=1.5*GEOPOLY_PI ){ + r -= 2.0*GEOPOLY_PI; + } + if( r>=0.5*GEOPOLY_PI ){ + return -geopolySine(r-GEOPOLY_PI); + }else{ + double r2 = r*r; + double r3 = r2*r; + double r5 = r3*r2; + return 0.9996949*r - 0.1656700*r3 + 0.0075134*r5; + } +} + +/* +** Function: geopoly_regular(X,Y,R,N) +** +** Construct a simple, convex, regular polygon centered at X, Y +** with circumradius R and with N sides. +*/ +static void geopolyRegularFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + double x = sqlite3_value_double(argv[0]); + double y = sqlite3_value_double(argv[1]); + double r = sqlite3_value_double(argv[2]); + int n = sqlite3_value_int(argv[3]); + int i; + GeoPoly *p; + (void)argc; + + if( n<3 || r<=0.0 ) return; + if( n>1000 ) n = 1000; + p = sqlite3_malloc64( sizeof(*p) + (n-1)*2*sizeof(GeoCoord) ); + if( p==0 ){ + sqlite3_result_error_nomem(context); + return; + } + i = 1; + p->hdr[0] = *(unsigned char*)&i; + p->hdr[1] = 0; + p->hdr[2] = (n>>8)&0xff; + p->hdr[3] = n&0xff; + for(i=0; ihdr, 4+8*n, SQLITE_TRANSIENT); + sqlite3_free(p); +} + +/* +** If pPoly is a polygon, compute its bounding box. Then: +** +** (1) if aCoord!=0 store the bounding box in aCoord, returning NULL +** (2) otherwise, compute a GeoPoly for the bounding box and return the +** new GeoPoly +** +** If pPoly is NULL but aCoord is not NULL, then compute a new GeoPoly from +** the bounding box in aCoord and return a pointer to that GeoPoly. +*/ +static GeoPoly *geopolyBBox( + sqlite3_context *context, /* For recording the error */ + sqlite3_value *pPoly, /* The polygon */ + RtreeCoord *aCoord, /* Results here */ + int *pRc /* Error code here */ +){ + GeoPoly *pOut = 0; + GeoPoly *p; + float mnX, mxX, mnY, mxY; + if( pPoly==0 && aCoord!=0 ){ + p = 0; + mnX = aCoord[0].f; + mxX = aCoord[1].f; + mnY = aCoord[2].f; + mxY = aCoord[3].f; + goto geopolyBboxFill; + }else{ + p = geopolyFuncParam(context, pPoly, pRc); + } + if( p ){ + int ii; + mnX = mxX = GeoX(p,0); + mnY = mxY = GeoY(p,0); + for(ii=1; iinVertex; ii++){ + double r = GeoX(p,ii); + if( rmxX ) mxX = (float)r; + r = GeoY(p,ii); + if( rmxY ) mxY = (float)r; + } + if( pRc ) *pRc = SQLITE_OK; + if( aCoord==0 ){ + geopolyBboxFill: + pOut = sqlite3_realloc64(p, GEOPOLY_SZ(4)); + if( pOut==0 ){ + sqlite3_free(p); + if( context ) sqlite3_result_error_nomem(context); + if( pRc ) *pRc = SQLITE_NOMEM; + return 0; + } + pOut->nVertex = 4; + ii = 1; + pOut->hdr[0] = *(unsigned char*)ⅈ + pOut->hdr[1] = 0; + pOut->hdr[2] = 0; + pOut->hdr[3] = 4; + GeoX(pOut,0) = mnX; + GeoY(pOut,0) = mnY; + GeoX(pOut,1) = mxX; + GeoY(pOut,1) = mnY; + GeoX(pOut,2) = mxX; + GeoY(pOut,2) = mxY; + GeoX(pOut,3) = mnX; + GeoY(pOut,3) = mxY; + }else{ + sqlite3_free(p); + aCoord[0].f = mnX; + aCoord[1].f = mxX; + aCoord[2].f = mnY; + aCoord[3].f = mxY; + } + }else if( aCoord ){ + memset(aCoord, 0, sizeof(RtreeCoord)*4); + } + return pOut; +} + +/* +** Implementation of the geopoly_bbox(X) SQL function. +*/ +static void geopolyBBoxFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p = geopolyBBox(context, argv[0], 0, 0); + (void)argc; + if( p ){ + sqlite3_result_blob(context, p->hdr, + 4+8*p->nVertex, SQLITE_TRANSIENT); + sqlite3_free(p); + } +} + +/* +** State vector for the geopoly_group_bbox() aggregate function. +*/ +typedef struct GeoBBox GeoBBox; +struct GeoBBox { + int isInit; + RtreeCoord a[4]; +}; + + +/* +** Implementation of the geopoly_group_bbox(X) aggregate SQL function. +*/ +static void geopolyBBoxStep( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + RtreeCoord a[4]; + int rc = SQLITE_OK; + (void)argc; + (void)geopolyBBox(context, argv[0], a, &rc); + if( rc==SQLITE_OK ){ + GeoBBox *pBBox; + pBBox = (GeoBBox*)sqlite3_aggregate_context(context, sizeof(*pBBox)); + if( pBBox==0 ) return; + if( pBBox->isInit==0 ){ + pBBox->isInit = 1; + memcpy(pBBox->a, a, sizeof(RtreeCoord)*4); + }else{ + if( a[0].f < pBBox->a[0].f ) pBBox->a[0] = a[0]; + if( a[1].f > pBBox->a[1].f ) pBBox->a[1] = a[1]; + if( a[2].f < pBBox->a[2].f ) pBBox->a[2] = a[2]; + if( a[3].f > pBBox->a[3].f ) pBBox->a[3] = a[3]; + } + } +} +static void geopolyBBoxFinal( + sqlite3_context *context +){ + GeoPoly *p; + GeoBBox *pBBox; + pBBox = (GeoBBox*)sqlite3_aggregate_context(context, 0); + if( pBBox==0 ) return; + p = geopolyBBox(context, 0, pBBox->a, 0); + if( p ){ + sqlite3_result_blob(context, p->hdr, + 4+8*p->nVertex, SQLITE_TRANSIENT); + sqlite3_free(p); + } +} + + +/* +** Determine if point (x0,y0) is beneath line segment (x1,y1)->(x2,y2). +** Returns: +** +** +2 x0,y0 is on the line segement +** +** +1 x0,y0 is beneath line segment +** +** 0 x0,y0 is not on or beneath the line segment or the line segment +** is vertical and x0,y0 is not on the line segment +** +** The left-most coordinate min(x1,x2) is not considered to be part of +** the line segment for the purposes of this analysis. +*/ +static int pointBeneathLine( + double x0, double y0, + double x1, double y1, + double x2, double y2 +){ + double y; + if( x0==x1 && y0==y1 ) return 2; + if( x1x2 ) return 0; + }else if( x1>x2 ){ + if( x0<=x2 || x0>x1 ) return 0; + }else{ + /* Vertical line segment */ + if( x0!=x1 ) return 0; + if( y0y1 && y0>y2 ) return 0; + return 2; + } + y = y1 + (y2-y1)*(x0-x1)/(x2-x1); + if( y0==y ) return 2; + if( y0nVertex-1; ii++){ + v = pointBeneathLine(x0,y0,GeoX(p1,ii), GeoY(p1,ii), + GeoX(p1,ii+1),GeoY(p1,ii+1)); + if( v==2 ) break; + cnt += v; + } + if( v!=2 ){ + v = pointBeneathLine(x0,y0,GeoX(p1,ii), GeoY(p1,ii), + GeoX(p1,0), GeoY(p1,0)); + } + if( v==2 ){ + sqlite3_result_int(context, 1); + }else if( ((v+cnt)&1)==0 ){ + sqlite3_result_int(context, 0); + }else{ + sqlite3_result_int(context, 2); + } + sqlite3_free(p1); +} + +/* Forward declaration */ +static int geopolyOverlap(GeoPoly *p1, GeoPoly *p2); + +/* +** SQL function: geopoly_within(P1,P2) +** +** Return +2 if P1 and P2 are the same polygon +** Return +1 if P2 is contained within P1 +** Return 0 if any part of P2 is on the outside of P1 +** +*/ +static void geopolyWithinFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p1 = geopolyFuncParam(context, argv[0], 0); + GeoPoly *p2 = geopolyFuncParam(context, argv[1], 0); + (void)argc; + if( p1 && p2 ){ + int x = geopolyOverlap(p1, p2); + if( x<0 ){ + sqlite3_result_error_nomem(context); + }else{ + sqlite3_result_int(context, x==2 ? 1 : x==4 ? 2 : 0); + } + } + sqlite3_free(p1); + sqlite3_free(p2); +} + +/* Objects used by the overlap algorihm. */ +typedef struct GeoEvent GeoEvent; +typedef struct GeoSegment GeoSegment; +typedef struct GeoOverlap GeoOverlap; +struct GeoEvent { + double x; /* X coordinate at which event occurs */ + int eType; /* 0 for ADD, 1 for REMOVE */ + GeoSegment *pSeg; /* The segment to be added or removed */ + GeoEvent *pNext; /* Next event in the sorted list */ +}; +struct GeoSegment { + double C, B; /* y = C*x + B */ + double y; /* Current y value */ + float y0; /* Initial y value */ + unsigned char side; /* 1 for p1, 2 for p2 */ + unsigned int idx; /* Which segment within the side */ + GeoSegment *pNext; /* Next segment in a list sorted by y */ +}; +struct GeoOverlap { + GeoEvent *aEvent; /* Array of all events */ + GeoSegment *aSegment; /* Array of all segments */ + int nEvent; /* Number of events */ + int nSegment; /* Number of segments */ +}; + +/* +** Add a single segment and its associated events. +*/ +static void geopolyAddOneSegment( + GeoOverlap *p, + GeoCoord x0, + GeoCoord y0, + GeoCoord x1, + GeoCoord y1, + unsigned char side, + unsigned int idx +){ + GeoSegment *pSeg; + GeoEvent *pEvent; + if( x0==x1 ) return; /* Ignore vertical segments */ + if( x0>x1 ){ + GeoCoord t = x0; + x0 = x1; + x1 = t; + t = y0; + y0 = y1; + y1 = t; + } + pSeg = p->aSegment + p->nSegment; + p->nSegment++; + pSeg->C = (y1-y0)/(x1-x0); + pSeg->B = y1 - x1*pSeg->C; + pSeg->y0 = y0; + pSeg->side = side; + pSeg->idx = idx; + pEvent = p->aEvent + p->nEvent; + p->nEvent++; + pEvent->x = x0; + pEvent->eType = 0; + pEvent->pSeg = pSeg; + pEvent = p->aEvent + p->nEvent; + p->nEvent++; + pEvent->x = x1; + pEvent->eType = 1; + pEvent->pSeg = pSeg; +} + + + +/* +** Insert all segments and events for polygon pPoly. +*/ +static void geopolyAddSegments( + GeoOverlap *p, /* Add segments to this Overlap object */ + GeoPoly *pPoly, /* Take all segments from this polygon */ + unsigned char side /* The side of pPoly */ +){ + unsigned int i; + GeoCoord *x; + for(i=0; i<(unsigned)pPoly->nVertex-1; i++){ + x = &GeoX(pPoly,i); + geopolyAddOneSegment(p, x[0], x[1], x[2], x[3], side, i); + } + x = &GeoX(pPoly,i); + geopolyAddOneSegment(p, x[0], x[1], pPoly->a[0], pPoly->a[1], side, i); +} + +/* +** Merge two lists of sorted events by X coordinate +*/ +static GeoEvent *geopolyEventMerge(GeoEvent *pLeft, GeoEvent *pRight){ + GeoEvent head, *pLast; + head.pNext = 0; + pLast = &head; + while( pRight && pLeft ){ + if( pRight->x <= pLeft->x ){ + pLast->pNext = pRight; + pLast = pRight; + pRight = pRight->pNext; + }else{ + pLast->pNext = pLeft; + pLast = pLeft; + pLeft = pLeft->pNext; + } + } + pLast->pNext = pRight ? pRight : pLeft; + return head.pNext; +} + +/* +** Sort an array of nEvent event objects into a list. +*/ +static GeoEvent *geopolySortEventsByX(GeoEvent *aEvent, int nEvent){ + int mx = 0; + int i, j; + GeoEvent *p; + GeoEvent *a[50]; + for(i=0; ipNext = 0; + for(j=0; j=mx ) mx = j+1; + } + p = 0; + for(i=0; iy - pLeft->y; + if( r==0.0 ) r = pRight->C - pLeft->C; + if( r<0.0 ){ + pLast->pNext = pRight; + pLast = pRight; + pRight = pRight->pNext; + }else{ + pLast->pNext = pLeft; + pLast = pLeft; + pLeft = pLeft->pNext; + } + } + pLast->pNext = pRight ? pRight : pLeft; + return head.pNext; +} + +/* +** Sort a list of GeoSegments in order of increasing Y and in the event of +** a tie, increasing C (slope). +*/ +static GeoSegment *geopolySortSegmentsByYAndC(GeoSegment *pList){ + int mx = 0; + int i; + GeoSegment *p; + GeoSegment *a[50]; + while( pList ){ + p = pList; + pList = pList->pNext; + p->pNext = 0; + for(i=0; i=mx ) mx = i+1; + } + p = 0; + for(i=0; inVertex + p2->nVertex + 2; + GeoOverlap *p; + sqlite3_int64 nByte; + GeoEvent *pThisEvent; + double rX; + int rc = 0; + int needSort = 0; + GeoSegment *pActive = 0; + GeoSegment *pSeg; + unsigned char aOverlap[4]; + + nByte = sizeof(GeoEvent)*nVertex*2 + + sizeof(GeoSegment)*nVertex + + sizeof(GeoOverlap); + p = sqlite3_malloc64( nByte ); + if( p==0 ) return -1; + p->aEvent = (GeoEvent*)&p[1]; + p->aSegment = (GeoSegment*)&p->aEvent[nVertex*2]; + p->nEvent = p->nSegment = 0; + geopolyAddSegments(p, p1, 1); + geopolyAddSegments(p, p2, 2); + pThisEvent = geopolySortEventsByX(p->aEvent, p->nEvent); + rX = pThisEvent && pThisEvent->x==0.0 ? -1.0 : 0.0; + memset(aOverlap, 0, sizeof(aOverlap)); + while( pThisEvent ){ + if( pThisEvent->x!=rX ){ + GeoSegment *pPrev = 0; + int iMask = 0; + GEODEBUG(("Distinct X: %g\n", pThisEvent->x)); + rX = pThisEvent->x; + if( needSort ){ + GEODEBUG(("SORT\n")); + pActive = geopolySortSegmentsByYAndC(pActive); + needSort = 0; + } + for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){ + if( pPrev ){ + if( pPrev->y!=pSeg->y ){ + GEODEBUG(("MASK: %d\n", iMask)); + aOverlap[iMask] = 1; + } + } + iMask ^= pSeg->side; + pPrev = pSeg; + } + pPrev = 0; + for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){ + double y = pSeg->C*rX + pSeg->B; + GEODEBUG(("Segment %d.%d %g->%g\n", pSeg->side, pSeg->idx, pSeg->y, y)); + pSeg->y = y; + if( pPrev ){ + if( pPrev->y>pSeg->y && pPrev->side!=pSeg->side ){ + rc = 1; + GEODEBUG(("Crossing: %d.%d and %d.%d\n", + pPrev->side, pPrev->idx, + pSeg->side, pSeg->idx)); + goto geopolyOverlapDone; + }else if( pPrev->y!=pSeg->y ){ + GEODEBUG(("MASK: %d\n", iMask)); + aOverlap[iMask] = 1; + } + } + iMask ^= pSeg->side; + pPrev = pSeg; + } + } + GEODEBUG(("%s %d.%d C=%g B=%g\n", + pThisEvent->eType ? "RM " : "ADD", + pThisEvent->pSeg->side, pThisEvent->pSeg->idx, + pThisEvent->pSeg->C, + pThisEvent->pSeg->B)); + if( pThisEvent->eType==0 ){ + /* Add a segment */ + pSeg = pThisEvent->pSeg; + pSeg->y = pSeg->y0; + pSeg->pNext = pActive; + pActive = pSeg; + needSort = 1; + }else{ + /* Remove a segment */ + if( pActive==pThisEvent->pSeg ){ + pActive = ALWAYS(pActive) ? pActive->pNext : 0; + }else{ + for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){ + if( pSeg->pNext==pThisEvent->pSeg ){ + pSeg->pNext = ALWAYS(pSeg->pNext) ? pSeg->pNext->pNext : 0; + break; + } + } + } + } + pThisEvent = pThisEvent->pNext; + } + if( aOverlap[3]==0 ){ + rc = 0; + }else if( aOverlap[1]!=0 && aOverlap[2]==0 ){ + rc = 3; + }else if( aOverlap[1]==0 && aOverlap[2]!=0 ){ + rc = 2; + }else if( aOverlap[1]==0 && aOverlap[2]==0 ){ + rc = 4; + }else{ + rc = 1; + } + +geopolyOverlapDone: + sqlite3_free(p); + return rc; +} + +/* +** SQL function: geopoly_overlap(P1,P2) +** +** Determine whether or not P1 and P2 overlap. Return value: +** +** 0 The two polygons are disjoint +** 1 They overlap +** 2 P1 is completely contained within P2 +** 3 P2 is completely contained within P1 +** 4 P1 and P2 are the same polygon +** NULL Either P1 or P2 or both are not valid polygons +*/ +static void geopolyOverlapFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + GeoPoly *p1 = geopolyFuncParam(context, argv[0], 0); + GeoPoly *p2 = geopolyFuncParam(context, argv[1], 0); + (void)argc; + if( p1 && p2 ){ + int x = geopolyOverlap(p1, p2); + if( x<0 ){ + sqlite3_result_error_nomem(context); + }else{ + sqlite3_result_int(context, x); + } + } + sqlite3_free(p1); + sqlite3_free(p2); +} + +/* +** Enable or disable debugging output +*/ +static void geopolyDebugFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + (void)context; + (void)argc; +#ifdef GEOPOLY_ENABLE_DEBUG + geo_debug = sqlite3_value_int(argv[0]); +#else + (void)argv; +#endif +} + +/* +** This function is the implementation of both the xConnect and xCreate +** methods of the geopoly virtual table. +** +** argv[0] -> module name +** argv[1] -> database name +** argv[2] -> table name +** argv[...] -> column names... +*/ +static int geopolyInit( + sqlite3 *db, /* Database connection */ + void *pAux, /* One of the RTREE_COORD_* constants */ + int argc, const char *const*argv, /* Parameters to CREATE TABLE statement */ + sqlite3_vtab **ppVtab, /* OUT: New virtual table */ + char **pzErr, /* OUT: Error message, if any */ + int isCreate /* True for xCreate, false for xConnect */ +){ + int rc = SQLITE_OK; + Rtree *pRtree; + sqlite3_int64 nDb; /* Length of string argv[1] */ + sqlite3_int64 nName; /* Length of string argv[2] */ + sqlite3_str *pSql; + char *zSql; + int ii; + (void)pAux; + + sqlite3_vtab_config(db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1); + + /* Allocate the sqlite3_vtab structure */ + nDb = strlen(argv[1]); + nName = strlen(argv[2]); + pRtree = (Rtree *)sqlite3_malloc64(sizeof(Rtree)+nDb+nName+2); + if( !pRtree ){ + return SQLITE_NOMEM; + } + memset(pRtree, 0, sizeof(Rtree)+nDb+nName+2); + pRtree->nBusy = 1; + pRtree->base.pModule = &rtreeModule; + pRtree->zDb = (char *)&pRtree[1]; + pRtree->zName = &pRtree->zDb[nDb+1]; + pRtree->eCoordType = RTREE_COORD_REAL32; + pRtree->nDim = 2; + pRtree->nDim2 = 4; + memcpy(pRtree->zDb, argv[1], nDb); + memcpy(pRtree->zName, argv[2], nName); + + + /* Create/Connect to the underlying relational database schema. If + ** that is successful, call sqlite3_declare_vtab() to configure + ** the r-tree table schema. + */ + pSql = sqlite3_str_new(db); + sqlite3_str_appendf(pSql, "CREATE TABLE x(_shape"); + pRtree->nAux = 1; /* Add one for _shape */ + pRtree->nAuxNotNull = 1; /* The _shape column is always not-null */ + for(ii=3; iinAux++; + sqlite3_str_appendf(pSql, ",%s", argv[ii]); + } + sqlite3_str_appendf(pSql, ");"); + zSql = sqlite3_str_finish(pSql); + if( !zSql ){ + rc = SQLITE_NOMEM; + }else if( SQLITE_OK!=(rc = sqlite3_declare_vtab(db, zSql)) ){ + *pzErr = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + } + sqlite3_free(zSql); + if( rc ) goto geopolyInit_fail; + pRtree->nBytesPerCell = 8 + pRtree->nDim2*4; + + /* Figure out the node size to use. */ + rc = getNodeSize(db, pRtree, isCreate, pzErr); + if( rc ) goto geopolyInit_fail; + rc = rtreeSqlInit(pRtree, db, argv[1], argv[2], isCreate); + if( rc ){ + *pzErr = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + goto geopolyInit_fail; + } + + *ppVtab = (sqlite3_vtab *)pRtree; + return SQLITE_OK; + +geopolyInit_fail: + if( rc==SQLITE_OK ) rc = SQLITE_ERROR; + assert( *ppVtab==0 ); + assert( pRtree->nBusy==1 ); + rtreeRelease(pRtree); + return rc; +} + + +/* +** GEOPOLY virtual table module xCreate method. +*/ +static int geopolyCreate( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + return geopolyInit(db, pAux, argc, argv, ppVtab, pzErr, 1); +} + +/* +** GEOPOLY virtual table module xConnect method. +*/ +static int geopolyConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + return geopolyInit(db, pAux, argc, argv, ppVtab, pzErr, 0); +} + + +/* +** GEOPOLY virtual table module xFilter method. +** +** Query plans: +** +** 1 rowid lookup +** 2 search for objects overlapping the same bounding box +** that contains polygon argv[0] +** 3 search for objects overlapping the same bounding box +** that contains polygon argv[0] +** 4 full table scan +*/ +static int geopolyFilter( + sqlite3_vtab_cursor *pVtabCursor, /* The cursor to initialize */ + int idxNum, /* Query plan */ + const char *idxStr, /* Not Used */ + int argc, sqlite3_value **argv /* Parameters to the query plan */ +){ + Rtree *pRtree = (Rtree *)pVtabCursor->pVtab; + RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; + RtreeNode *pRoot = 0; + int rc = SQLITE_OK; + int iCell = 0; + (void)idxStr; + + rtreeReference(pRtree); + + /* Reset the cursor to the same state as rtreeOpen() leaves it in. */ + resetCursor(pCsr); + + pCsr->iStrategy = idxNum; + if( idxNum==1 ){ + /* Special case - lookup by rowid. */ + RtreeNode *pLeaf; /* Leaf on which the required cell resides */ + RtreeSearchPoint *p; /* Search point for the leaf */ + i64 iRowid = sqlite3_value_int64(argv[0]); + i64 iNode = 0; + rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode); + if( rc==SQLITE_OK && pLeaf!=0 ){ + p = rtreeSearchPointNew(pCsr, RTREE_ZERO, 0); + assert( p!=0 ); /* Always returns pCsr->sPoint */ + pCsr->aNode[0] = pLeaf; + p->id = iNode; + p->eWithin = PARTLY_WITHIN; + rc = nodeRowidIndex(pRtree, pLeaf, iRowid, &iCell); + p->iCell = (u8)iCell; + RTREE_QUEUE_TRACE(pCsr, "PUSH-F1:"); + }else{ + pCsr->atEOF = 1; + } + }else{ + /* Normal case - r-tree scan. Set up the RtreeCursor.aConstraint array + ** with the configured constraints. + */ + rc = nodeAcquire(pRtree, 1, 0, &pRoot); + if( rc==SQLITE_OK && idxNum<=3 ){ + RtreeCoord bbox[4]; + RtreeConstraint *p; + assert( argc==1 ); + assert( argv[0]!=0 ); + geopolyBBox(0, argv[0], bbox, &rc); + if( rc ){ + goto geopoly_filter_end; + } + pCsr->aConstraint = p = sqlite3_malloc(sizeof(RtreeConstraint)*4); + pCsr->nConstraint = 4; + if( p==0 ){ + rc = SQLITE_NOMEM; + }else{ + memset(pCsr->aConstraint, 0, sizeof(RtreeConstraint)*4); + memset(pCsr->anQueue, 0, sizeof(u32)*(pRtree->iDepth + 1)); + if( idxNum==2 ){ + /* Overlap query */ + p->op = 'B'; + p->iCoord = 0; + p->u.rValue = bbox[1].f; + p++; + p->op = 'D'; + p->iCoord = 1; + p->u.rValue = bbox[0].f; + p++; + p->op = 'B'; + p->iCoord = 2; + p->u.rValue = bbox[3].f; + p++; + p->op = 'D'; + p->iCoord = 3; + p->u.rValue = bbox[2].f; + }else{ + /* Within query */ + p->op = 'D'; + p->iCoord = 0; + p->u.rValue = bbox[0].f; + p++; + p->op = 'B'; + p->iCoord = 1; + p->u.rValue = bbox[1].f; + p++; + p->op = 'D'; + p->iCoord = 2; + p->u.rValue = bbox[2].f; + p++; + p->op = 'B'; + p->iCoord = 3; + p->u.rValue = bbox[3].f; + } + } + } + if( rc==SQLITE_OK ){ + RtreeSearchPoint *pNew; + pNew = rtreeSearchPointNew(pCsr, RTREE_ZERO, (u8)(pRtree->iDepth+1)); + if( pNew==0 ){ + rc = SQLITE_NOMEM; + goto geopoly_filter_end; + } + pNew->id = 1; + pNew->iCell = 0; + pNew->eWithin = PARTLY_WITHIN; + assert( pCsr->bPoint==1 ); + pCsr->aNode[0] = pRoot; + pRoot = 0; + RTREE_QUEUE_TRACE(pCsr, "PUSH-Fm:"); + rc = rtreeStepToLeaf(pCsr); + } + } + +geopoly_filter_end: + nodeRelease(pRtree, pRoot); + rtreeRelease(pRtree); + return rc; +} + +/* +** Rtree virtual table module xBestIndex method. There are three +** table scan strategies to choose from (in order from most to +** least desirable): +** +** idxNum idxStr Strategy +** ------------------------------------------------ +** 1 "rowid" Direct lookup by rowid. +** 2 "rtree" R-tree overlap query using geopoly_overlap() +** 3 "rtree" R-tree within query using geopoly_within() +** 4 "fullscan" full-table scan. +** ------------------------------------------------ +*/ +static int geopolyBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ + int ii; + int iRowidTerm = -1; + int iFuncTerm = -1; + int idxNum = 0; + (void)tab; + + for(ii=0; iinConstraint; ii++){ + struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii]; + if( !p->usable ) continue; + if( p->iColumn<0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){ + iRowidTerm = ii; + break; + } + if( p->iColumn==0 && p->op>=SQLITE_INDEX_CONSTRAINT_FUNCTION ){ + /* p->op==SQLITE_INDEX_CONSTRAINT_FUNCTION for geopoly_overlap() + ** p->op==(SQLITE_INDEX_CONTRAINT_FUNCTION+1) for geopoly_within(). + ** See geopolyFindFunction() */ + iFuncTerm = ii; + idxNum = p->op - SQLITE_INDEX_CONSTRAINT_FUNCTION + 2; + } + } + + if( iRowidTerm>=0 ){ + pIdxInfo->idxNum = 1; + pIdxInfo->idxStr = "rowid"; + pIdxInfo->aConstraintUsage[iRowidTerm].argvIndex = 1; + pIdxInfo->aConstraintUsage[iRowidTerm].omit = 1; + pIdxInfo->estimatedCost = 30.0; + pIdxInfo->estimatedRows = 1; + pIdxInfo->idxFlags = SQLITE_INDEX_SCAN_UNIQUE; + return SQLITE_OK; + } + if( iFuncTerm>=0 ){ + pIdxInfo->idxNum = idxNum; + pIdxInfo->idxStr = "rtree"; + pIdxInfo->aConstraintUsage[iFuncTerm].argvIndex = 1; + pIdxInfo->aConstraintUsage[iFuncTerm].omit = 0; + pIdxInfo->estimatedCost = 300.0; + pIdxInfo->estimatedRows = 10; + return SQLITE_OK; + } + pIdxInfo->idxNum = 4; + pIdxInfo->idxStr = "fullscan"; + pIdxInfo->estimatedCost = 3000000.0; + pIdxInfo->estimatedRows = 100000; + return SQLITE_OK; +} + + +/* +** GEOPOLY virtual table module xColumn method. +*/ +static int geopolyColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ + Rtree *pRtree = (Rtree *)cur->pVtab; + RtreeCursor *pCsr = (RtreeCursor *)cur; + RtreeSearchPoint *p = rtreeSearchPointFirst(pCsr); + int rc = SQLITE_OK; + RtreeNode *pNode = rtreeNodeOfFirstSearchPoint(pCsr, &rc); + + if( rc ) return rc; + if( p==0 ) return SQLITE_OK; + if( i==0 && sqlite3_vtab_nochange(ctx) ) return SQLITE_OK; + if( i<=pRtree->nAux ){ + if( !pCsr->bAuxValid ){ + if( pCsr->pReadAux==0 ){ + rc = sqlite3_prepare_v3(pRtree->db, pRtree->zReadAuxSql, -1, 0, + &pCsr->pReadAux, 0); + if( rc ) return rc; + } + sqlite3_bind_int64(pCsr->pReadAux, 1, + nodeGetRowid(pRtree, pNode, p->iCell)); + rc = sqlite3_step(pCsr->pReadAux); + if( rc==SQLITE_ROW ){ + pCsr->bAuxValid = 1; + }else{ + sqlite3_reset(pCsr->pReadAux); + if( rc==SQLITE_DONE ) rc = SQLITE_OK; + return rc; + } + } + sqlite3_result_value(ctx, sqlite3_column_value(pCsr->pReadAux, i+2)); + } + return SQLITE_OK; +} + + +/* +** The xUpdate method for GEOPOLY module virtual tables. +** +** For DELETE: +** +** argv[0] = the rowid to be deleted +** +** For INSERT: +** +** argv[0] = SQL NULL +** argv[1] = rowid to insert, or an SQL NULL to select automatically +** argv[2] = _shape column +** argv[3] = first application-defined column.... +** +** For UPDATE: +** +** argv[0] = rowid to modify. Never NULL +** argv[1] = rowid after the change. Never NULL +** argv[2] = new value for _shape +** argv[3] = new value for first application-defined column.... +*/ +static int geopolyUpdate( + sqlite3_vtab *pVtab, + int nData, + sqlite3_value **aData, + sqlite_int64 *pRowid +){ + Rtree *pRtree = (Rtree *)pVtab; + int rc = SQLITE_OK; + RtreeCell cell; /* New cell to insert if nData>1 */ + i64 oldRowid; /* The old rowid */ + int oldRowidValid; /* True if oldRowid is valid */ + i64 newRowid; /* The new rowid */ + int newRowidValid; /* True if newRowid is valid */ + int coordChange = 0; /* Change in coordinates */ + + if( pRtree->nNodeRef ){ + /* Unable to write to the btree while another cursor is reading from it, + ** since the write might do a rebalance which would disrupt the read + ** cursor. */ + return SQLITE_LOCKED_VTAB; + } + rtreeReference(pRtree); + assert(nData>=1); + + oldRowidValid = sqlite3_value_type(aData[0])!=SQLITE_NULL;; + oldRowid = oldRowidValid ? sqlite3_value_int64(aData[0]) : 0; + newRowidValid = nData>1 && sqlite3_value_type(aData[1])!=SQLITE_NULL; + newRowid = newRowidValid ? sqlite3_value_int64(aData[1]) : 0; + cell.iRowid = newRowid; + + if( nData>1 /* not a DELETE */ + && (!oldRowidValid /* INSERT */ + || !sqlite3_value_nochange(aData[2]) /* UPDATE _shape */ + || oldRowid!=newRowid) /* Rowid change */ + ){ + assert( aData[2]!=0 ); + geopolyBBox(0, aData[2], cell.aCoord, &rc); + if( rc ){ + if( rc==SQLITE_ERROR ){ + pVtab->zErrMsg = + sqlite3_mprintf("_shape does not contain a valid polygon"); + } + goto geopoly_update_end; + } + coordChange = 1; + + /* If a rowid value was supplied, check if it is already present in + ** the table. If so, the constraint has failed. */ + if( newRowidValid && (!oldRowidValid || oldRowid!=newRowid) ){ + int steprc; + sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid); + steprc = sqlite3_step(pRtree->pReadRowid); + rc = sqlite3_reset(pRtree->pReadRowid); + if( SQLITE_ROW==steprc ){ + if( sqlite3_vtab_on_conflict(pRtree->db)==SQLITE_REPLACE ){ + rc = rtreeDeleteRowid(pRtree, cell.iRowid); + }else{ + rc = rtreeConstraintError(pRtree, 0); + } + } + } + } + + /* If aData[0] is not an SQL NULL value, it is the rowid of a + ** record to delete from the r-tree table. The following block does + ** just that. + */ + if( rc==SQLITE_OK && (nData==1 || (coordChange && oldRowidValid)) ){ + rc = rtreeDeleteRowid(pRtree, oldRowid); + } + + /* If the aData[] array contains more than one element, elements + ** (aData[2]..aData[argc-1]) contain a new record to insert into + ** the r-tree structure. + */ + if( rc==SQLITE_OK && nData>1 && coordChange ){ + /* Insert the new record into the r-tree */ + RtreeNode *pLeaf = 0; + if( !newRowidValid ){ + rc = rtreeNewRowid(pRtree, &cell.iRowid); + } + *pRowid = cell.iRowid; + if( rc==SQLITE_OK ){ + rc = ChooseLeaf(pRtree, &cell, 0, &pLeaf); + } + if( rc==SQLITE_OK ){ + int rc2; + pRtree->iReinsertHeight = -1; + rc = rtreeInsertCell(pRtree, pLeaf, &cell, 0); + rc2 = nodeRelease(pRtree, pLeaf); + if( rc==SQLITE_OK ){ + rc = rc2; + } + } + } + + /* Change the data */ + if( rc==SQLITE_OK && nData>1 ){ + sqlite3_stmt *pUp = pRtree->pWriteAux; + int jj; + int nChange = 0; + sqlite3_bind_int64(pUp, 1, cell.iRowid); + assert( pRtree->nAux>=1 ); + if( sqlite3_value_nochange(aData[2]) ){ + sqlite3_bind_null(pUp, 2); + }else{ + GeoPoly *p = 0; + if( sqlite3_value_type(aData[2])==SQLITE_TEXT + && (p = geopolyFuncParam(0, aData[2], &rc))!=0 + && rc==SQLITE_OK + ){ + sqlite3_bind_blob(pUp, 2, p->hdr, 4+8*p->nVertex, SQLITE_TRANSIENT); + }else{ + sqlite3_bind_value(pUp, 2, aData[2]); + } + sqlite3_free(p); + nChange = 1; + } + for(jj=1; jjxQueryFunc = 0; pGeomCtx->xDestructor = 0; pGeomCtx->pContext = pContext; - return sqlite3_create_function_v2(db, zGeom, -1, SQLITE_ANY, + return sqlite3_create_function_v2(db, zGeom, -1, SQLITE_ANY, (void *)pGeomCtx, geomCallback, 0, 0, rtreeFreeCallback ); } @@ -174887,12 +211494,15 @@ SQLITE_API int sqlite3_rtree_query_callback( /* Allocate and populate the context object. */ pGeomCtx = (RtreeGeomCallback *)sqlite3_malloc(sizeof(RtreeGeomCallback)); - if( !pGeomCtx ) return SQLITE_NOMEM; + if( !pGeomCtx ){ + if( xDestructor ) xDestructor(pContext); + return SQLITE_NOMEM; + } pGeomCtx->xGeom = 0; pGeomCtx->xQueryFunc = xQueryFunc; pGeomCtx->xDestructor = xDestructor; pGeomCtx->pContext = pContext; - return sqlite3_create_function_v2(db, zQueryFunc, -1, SQLITE_ANY, + return sqlite3_create_function_v2(db, zQueryFunc, -1, SQLITE_ANY, (void *)pGeomCtx, geomCallback, 0, 0, rtreeFreeCallback ); } @@ -174928,9 +211538,9 @@ SQLITE_API int sqlite3_rtree_init( ************************************************************************* ** $Id: icu.c,v 1.7 2007/12/13 21:54:11 drh Exp $ ** -** This file implements an integration between the ICU library -** ("International Components for Unicode", an open-source library -** for handling unicode data) and SQLite. The integration uses +** This file implements an integration between the ICU library +** ("International Components for Unicode", an open-source library +** for handling unicode data) and SQLite. The integration uses ** ICU to provide the following to SQLite: ** ** * An implementation of the SQL regexp() function (and hence REGEXP @@ -174941,7 +211551,7 @@ SQLITE_API int sqlite3_rtree_init( ** ** * Integration of ICU and SQLite collation sequences. ** -** * An implementation of the LIKE operator that uses ICU to +** * An implementation of the LIKE operator that uses ICU to ** provide case-independent matching. */ @@ -174968,7 +211578,7 @@ SQLITE_API int sqlite3_rtree_init( ** This function is called when an ICU function called from within ** the implementation of an SQL scalar function returns an error. ** -** The scalar function context passed as the first argument is +** The scalar function context passed as the first argument is ** loaded with an error message based on the following two args. */ static void icuFunctionError( @@ -175033,7 +211643,7 @@ static const unsigned char icuUtf8Trans1[] = { /* ** Compare two UTF-8 strings for equality where the first string is -** a "LIKE" expression. Return true (1) if they are the same and +** a "LIKE" expression. Return true (1) if they are the same and ** false (0) if they are different. */ static int icuLikeCompare( @@ -175060,12 +211670,12 @@ static int icuLikeCompare( ** 3. uPattern is an unescaped escape character, or ** 4. uPattern is to be handled as an ordinary character */ - if( !prevEscape && uPattern==MATCH_ALL ){ + if( uPattern==MATCH_ALL && !prevEscape && uPattern!=(uint32_t)uEsc ){ /* Case 1. */ uint8_t c; /* Skip any MATCH_ALL or MATCH_ONE characters that follow a - ** MATCH_ALL. For each MATCH_ONE, skip one character in the + ** MATCH_ALL. For each MATCH_ONE, skip one character in the ** test string. */ while( (c=*zPattern) == MATCH_ALL || c == MATCH_ONE ){ @@ -175086,12 +211696,12 @@ static int icuLikeCompare( } return 0; - }else if( !prevEscape && uPattern==MATCH_ONE ){ + }else if( uPattern==MATCH_ONE && !prevEscape && uPattern!=(uint32_t)uEsc ){ /* Case 2. */ if( *zString==0 ) return 0; SQLITE_ICU_SKIP_UTF8(zString); - }else if( !prevEscape && uPattern==(uint32_t)uEsc){ + }else if( uPattern==(uint32_t)uEsc && !prevEscape ){ /* Case 3. */ prevEscape = 1; @@ -175118,15 +211728,15 @@ static int icuLikeCompare( ** ** A LIKE B ** -** is implemented as like(B, A). If there is an escape character E, +** is implemented as like(B, A). If there is an escape character E, ** ** A LIKE B ESCAPE E ** ** is mapped to like(B, A, E). */ static void icuLikeFunc( - sqlite3_context *context, - int argc, + sqlite3_context *context, + int argc, sqlite3_value **argv ){ const unsigned char *zA = sqlite3_value_text(argv[0]); @@ -175152,7 +211762,7 @@ static void icuLikeFunc( if( zE==0 ) return; U8_NEXT(zE, i, nE, uEsc); if( i!=nE){ - sqlite3_result_error(context, + sqlite3_result_error(context, "ESCAPE expression must be a single character", -1); return; } @@ -175175,7 +211785,7 @@ static void icuRegexpDelete(void *p){ /* ** Implementation of SQLite REGEXP operator. This scalar function takes ** two arguments. The first is a regular expression pattern to compile -** the second is a string to match against that pattern. If either +** the second is a string to match against that pattern. If either ** argument is an SQL NULL, then NULL Is returned. Otherwise, the result ** is 1 if the string matches the pattern, or 0 otherwise. ** @@ -175199,8 +211809,8 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ (void)nArg; /* Unused parameter */ - /* If the left hand side of the regexp operator is NULL, - ** then the result is also NULL. + /* If the left hand side of the regexp operator is NULL, + ** then the result is also NULL. */ if( !zString ){ return; @@ -175216,8 +211826,9 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ if( U_SUCCESS(status) ){ sqlite3_set_auxdata(p, 0, pExpr, icuRegexpDelete); - }else{ - assert(!pExpr); + pExpr = sqlite3_get_auxdata(p, 0); + } + if( !pExpr ){ icuFunctionError(p, "uregex_open", status); return; } @@ -175238,7 +211849,7 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ } /* Set the text that the regular expression operates on to a NULL - ** pointer. This is not really necessary, but it is tidier than + ** pointer. This is not really necessary, but it is tidier than ** leaving the regular expression object configured with an invalid ** pointer after this function returns. */ @@ -175249,7 +211860,7 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ } /* -** Implementations of scalar functions for case mapping - upper() and +** Implementations of scalar functions for case mapping - upper() and ** lower(). Function upper() converts its input to upper-case (ABC). ** Function lower() converts to lower-case (abc). ** @@ -175257,7 +211868,7 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ ** "language specific". Refer to ICU documentation for the differences ** between the two. ** -** To utilise "general" case mapping, the upper() or lower() scalar +** To utilise "general" case mapping, the upper() or lower() scalar ** functions are invoked with one argument: ** ** upper('ABC') -> 'abc' @@ -175365,7 +211976,7 @@ static int icuCollationColl( /* ** Implementation of the scalar function icu_load_collation(). ** -** This scalar function is used to add ICU collation based collation +** This scalar function is used to add ICU collation based collation ** types to an SQLite database connection. It is intended to be called ** as follows: ** @@ -175376,8 +211987,8 @@ static int icuCollationColl( ** collation sequence to create. */ static void icuLoadCollation( - sqlite3_context *p, - int nArg, + sqlite3_context *p, + int nArg, sqlite3_value **apArg ){ sqlite3 *db = (sqlite3 *)sqlite3_user_data(p); @@ -175403,7 +212014,7 @@ static void icuLoadCollation( } assert(p); - rc = sqlite3_create_collation_v2(db, zName, SQLITE_UTF16, (void *)pUCollator, + rc = sqlite3_create_collation_v2(db, zName, SQLITE_UTF16, (void *)pUCollator, icuCollationColl, icuCollationDel ); if( rc!=SQLITE_OK ){ @@ -175416,35 +212027,36 @@ static void icuLoadCollation( ** Register the ICU extension functions with database db. */ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db){ +# define SQLITEICU_EXTRAFLAGS (SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS) static const struct IcuScalar { const char *zName; /* Function name */ unsigned char nArg; /* Number of arguments */ - unsigned short enc; /* Optimal text encoding */ + unsigned int enc; /* Optimal text encoding */ unsigned char iContext; /* sqlite3_user_data() context */ void (*xFunc)(sqlite3_context*,int,sqlite3_value**); } scalars[] = { - {"icu_load_collation", 2, SQLITE_UTF8, 1, icuLoadCollation}, + {"icu_load_collation",2,SQLITE_UTF8|SQLITE_DIRECTONLY,1, icuLoadCollation}, #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU) - {"regexp", 2, SQLITE_ANY|SQLITE_DETERMINISTIC, 0, icuRegexpFunc}, - {"lower", 1, SQLITE_UTF16|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF16|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF16|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF16|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, - {"lower", 1, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF8|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, - {"like", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuLikeFunc}, - {"like", 3, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuLikeFunc}, + {"regexp", 2, SQLITE_ANY|SQLITEICU_EXTRAFLAGS, 0, icuRegexpFunc}, + {"lower", 1, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS, 0, icuCaseFunc16}, + {"lower", 2, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS, 0, icuCaseFunc16}, + {"upper", 1, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS, 1, icuCaseFunc16}, + {"upper", 2, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS, 1, icuCaseFunc16}, + {"lower", 1, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 0, icuCaseFunc16}, + {"lower", 2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 0, icuCaseFunc16}, + {"upper", 1, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 1, icuCaseFunc16}, + {"upper", 2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 1, icuCaseFunc16}, + {"like", 2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 0, icuLikeFunc}, + {"like", 3, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS, 0, icuLikeFunc}, #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU) */ }; int rc = SQLITE_OK; int i; - + for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){ const struct IcuScalar *p = &scalars[i]; rc = sqlite3_create_function( - db, p->zName, p->nArg, p->enc, + db, p->zName, p->nArg, p->enc, p->iContext ? (void*)db : (void*)0, p->xFunc, 0, 0 ); @@ -175458,7 +212070,7 @@ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db){ __declspec(dllexport) #endif SQLITE_API int sqlite3_icu_init( - sqlite3 *db, + sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi ){ @@ -175533,7 +212145,7 @@ static int icuCreate( if( argc>0 ){ n = strlen(argv[0])+1; } - p = (IcuTokenizer *)sqlite3_malloc(sizeof(IcuTokenizer)+n); + p = (IcuTokenizer *)sqlite3_malloc64(sizeof(IcuTokenizer)+n); if( !p ){ return SQLITE_NOMEM; } @@ -175561,7 +212173,7 @@ static int icuDestroy(sqlite3_tokenizer *pTokenizer){ /* ** Prepare to begin tokenizing a particular string. The input ** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in +** used to incrementally tokenize this string is returned in ** *ppCursor. */ static int icuOpen( @@ -175590,7 +212202,7 @@ static int icuOpen( nInput = strlen(zInput); } nChar = nInput+1; - pCsr = (IcuCursor *)sqlite3_malloc( + pCsr = (IcuCursor *)sqlite3_malloc64( sizeof(IcuCursor) + /* IcuCursor */ ((nChar+3)&~3) * sizeof(UChar) + /* IcuCursor.aChar[] */ (nChar+1) * sizeof(int) /* IcuCursor.aOffset[] */ @@ -175603,7 +212215,7 @@ static int icuOpen( pCsr->aOffset = (int *)&pCsr->aChar[(nChar+3)&~3]; pCsr->aOffset[iOut] = iInput; - U8_NEXT(zInput, iInput, nInput, c); + U8_NEXT(zInput, iInput, nInput, c); while( c>0 ){ int isError = 0; c = u_foldCase(c, opt); @@ -175749,7 +212361,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ************************************************************************* ** ** -** OVERVIEW +** OVERVIEW ** ** The RBU extension requires that the RBU update be packaged as an ** SQLite database. The tables it expects to find are described in @@ -175757,34 +212369,34 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** that the user wishes to write to, a corresponding data_xyz table is ** created in the RBU database and populated with one row for each row to ** update, insert or delete from the target table. -** +** ** The update proceeds in three stages: -** +** ** 1) The database is updated. The modified database pages are written ** to a *-oal file. A *-oal file is just like a *-wal file, except ** that it is named "-oal" instead of "-wal". ** Because regular SQLite clients do not look for file named ** "-oal", they go on using the original database in ** rollback mode while the *-oal file is being generated. -** +** ** During this stage RBU does not update the database by writing ** directly to the target tables. Instead it creates "imposter" ** tables using the SQLITE_TESTCTRL_IMPOSTER interface that it uses ** to update each b-tree individually. All updates required by each ** b-tree are completed before moving on to the next, and all ** updates are done in sorted key order. -** +** ** 2) The "-oal" file is moved to the equivalent "-wal" ** location using a call to rename(2). Before doing this the RBU ** module takes an EXCLUSIVE lock on the database file, ensuring ** that there are no other active readers. -** +** ** Once the EXCLUSIVE lock is released, any other database readers ** detect the new *-wal file and read the database in wal mode. At ** this point they see the new version of the database - including ** the updates made as part of the RBU update. -** -** 3) The new *-wal file is checkpointed. This proceeds in the same way +** +** 3) The new *-wal file is checkpointed. This proceeds in the same way ** as a regular database checkpoint, except that a single frame is ** checkpointed each time sqlite3rbu_step() is called. If the RBU ** handle is closed before the entire *-wal file is checkpointed, @@ -175793,7 +212405,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** the future. ** ** POTENTIAL PROBLEMS -** +** ** The rename() call might not be portable. And RBU is not currently ** syncing the directory after renaming the file. ** @@ -175815,7 +212427,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** fields are collected. This means we're probably writing a lot more ** data to disk when saving the state of an ongoing update to the RBU ** update database than is strictly necessary. -** +** */ /* #include */ @@ -175839,42 +212451,42 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** ************************************************************************* ** -** This file contains the public interface for the RBU extension. +** This file contains the public interface for the RBU extension. */ /* ** SUMMARY ** -** Writing a transaction containing a large number of operations on +** Writing a transaction containing a large number of operations on ** b-tree indexes that are collectively larger than the available cache -** memory can be very inefficient. +** memory can be very inefficient. ** ** The problem is that in order to update a b-tree, the leaf page (at least) ** containing the entry being inserted or deleted must be modified. If the -** working set of leaves is larger than the available cache memory, then a -** single leaf that is modified more than once as part of the transaction +** working set of leaves is larger than the available cache memory, then a +** single leaf that is modified more than once as part of the transaction ** may be loaded from or written to the persistent media multiple times. ** Additionally, because the index updates are likely to be applied in -** random order, access to pages within the database is also likely to be in +** random order, access to pages within the database is also likely to be in ** random order, which is itself quite inefficient. ** ** One way to improve the situation is to sort the operations on each index ** by index key before applying them to the b-tree. This leads to an IO ** pattern that resembles a single linear scan through the index b-tree, -** and all but guarantees each modified leaf page is loaded and stored +** and all but guarantees each modified leaf page is loaded and stored ** exactly once. SQLite uses this trick to improve the performance of ** CREATE INDEX commands. This extension allows it to be used to improve ** the performance of large transactions on existing databases. ** -** Additionally, this extension allows the work involved in writing the -** large transaction to be broken down into sub-transactions performed -** sequentially by separate processes. This is useful if the system cannot -** guarantee that a single update process will run for long enough to apply -** the entire update, for example because the update is being applied on a -** mobile device that is frequently rebooted. Even after the writer process +** Additionally, this extension allows the work involved in writing the +** large transaction to be broken down into sub-transactions performed +** sequentially by separate processes. This is useful if the system cannot +** guarantee that a single update process will run for long enough to apply +** the entire update, for example because the update is being applied on a +** mobile device that is frequently rebooted. Even after the writer process ** has committed one or more sub-transactions, other database clients continue -** to read from the original database snapshot. In other words, partially -** applied transactions are not visible to other clients. +** to read from the original database snapshot. In other words, partially +** applied transactions are not visible to other clients. ** ** "RBU" stands for "Resumable Bulk Update". As in a large database update ** transmitted via a wireless network to a mobile device. A transaction @@ -175890,9 +212502,9 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** ** * INSERT statements may not use any default values. ** -** * UPDATE and DELETE statements must identify their target rows by +** * UPDATE and DELETE statements must identify their target rows by ** non-NULL PRIMARY KEY values. Rows with NULL values stored in PRIMARY -** KEY fields may not be updated or deleted. If the table being written +** KEY fields may not be updated or deleted. If the table being written ** has no PRIMARY KEY, affected rows must be identified by rowid. ** ** * UPDATE statements may not modify PRIMARY KEY columns. @@ -175909,10 +212521,10 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** PREPARATION ** ** An "RBU update" is stored as a separate SQLite database. A database -** containing an RBU update is an "RBU database". For each table in the +** containing an RBU update is an "RBU database". For each table in the ** target database to be updated, the RBU database should contain a table ** named "data_" containing the same set of columns as the -** target table, and one more - "rbu_control". The data_% table should +** target table, and one more - "rbu_control". The data_% table should ** have no PRIMARY KEY or UNIQUE constraints, but each column should have ** the same type as the corresponding column in the target database. ** The "rbu_control" column should have no type at all. For example, if @@ -175927,22 +212539,22 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** The order of the columns in the data_% table does not matter. ** ** Instead of a regular table, the RBU database may also contain virtual -** tables or view named using the data_ naming scheme. +** tables or views named using the data_ naming scheme. ** -** Instead of the plain data_ naming scheme, RBU database tables +** Instead of the plain data_ naming scheme, RBU database tables ** may also be named data_, where is any sequence ** of zero or more numeric characters (0-9). This can be significant because -** tables within the RBU database are always processed in order sorted by +** tables within the RBU database are always processed in order sorted by ** name. By judicious selection of the portion of the names ** of the RBU tables the user can therefore control the order in which they ** are processed. This can be useful, for example, to ensure that "external ** content" FTS4 tables are updated before their underlying content tables. ** ** If the target database table is a virtual table or a table that has no -** PRIMARY KEY declaration, the data_% table must also contain a column -** named "rbu_rowid". This column is mapped to the tables implicit primary -** key column - "rowid". Virtual tables for which the "rowid" column does -** not function like a primary key value cannot be updated using RBU. For +** PRIMARY KEY declaration, the data_% table must also contain a column +** named "rbu_rowid". This column is mapped to the table's implicit primary +** key column - "rowid". Virtual tables for which the "rowid" column does +** not function like a primary key value cannot be updated using RBU. For ** example, if the target db contains either of the following: ** ** CREATE VIRTUAL TABLE x1 USING fts3(a, b); @@ -175965,35 +212577,35 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** CREATE TABLE data_ft1(a, b, langid, rbu_rowid, rbu_control); ** CREATE TABLE data_ft1(a, b, rbu_rowid, rbu_control); ** -** For each row to INSERT into the target database as part of the RBU +** For each row to INSERT into the target database as part of the RBU ** update, the corresponding data_% table should contain a single record ** with the "rbu_control" column set to contain integer value 0. The -** other columns should be set to the values that make up the new record -** to insert. +** other columns should be set to the values that make up the new record +** to insert. ** -** If the target database table has an INTEGER PRIMARY KEY, it is not -** possible to insert a NULL value into the IPK column. Attempting to +** If the target database table has an INTEGER PRIMARY KEY, it is not +** possible to insert a NULL value into the IPK column. Attempting to ** do so results in an SQLITE_MISMATCH error. ** -** For each row to DELETE from the target database as part of the RBU +** For each row to DELETE from the target database as part of the RBU ** update, the corresponding data_% table should contain a single record ** with the "rbu_control" column set to contain integer value 1. The ** real primary key values of the row to delete should be stored in the ** corresponding columns of the data_% table. The values stored in the ** other columns are not used. ** -** For each row to UPDATE from the target database as part of the RBU +** For each row to UPDATE from the target database as part of the RBU ** update, the corresponding data_% table should contain a single record ** with the "rbu_control" column set to contain a value of type text. -** The real primary key values identifying the row to update should be +** The real primary key values identifying the row to update should be ** stored in the corresponding columns of the data_% table row, as should -** the new values of all columns being update. The text value in the +** the new values of all columns being update. The text value in the ** "rbu_control" column must contain the same number of characters as ** there are columns in the target database table, and must consist entirely -** of 'x' and '.' characters (or in some special cases 'd' - see below). For +** of 'x' and '.' characters (or in some special cases 'd' - see below). For ** each column that is being updated, the corresponding character is set to ** 'x'. For those that remain as they are, the corresponding character of the -** rbu_control value should be set to '.'. For example, given the tables +** rbu_control value should be set to '.'. For example, given the tables ** above, the update statement: ** ** UPDATE t1 SET c = 'usa' WHERE a = 4; @@ -176007,30 +212619,30 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** target table with the value stored in the corresponding data_% column, the ** user-defined SQL function "rbu_delta()" is invoked and the result stored in ** the target table column. rbu_delta() is invoked with two arguments - the -** original value currently stored in the target table column and the +** original value currently stored in the target table column and the ** value specified in the data_xxx table. ** ** For example, this row: ** ** INSERT INTO data_t1(a, b, c, rbu_control) VALUES(4, NULL, 'usa', '..d'); ** -** is similar to an UPDATE statement such as: +** is similar to an UPDATE statement such as: ** ** UPDATE t1 SET c = rbu_delta(c, 'usa') WHERE a = 4; ** -** Finally, if an 'f' character appears in place of a 'd' or 's' in an +** Finally, if an 'f' character appears in place of a 'd' or 's' in an ** ota_control string, the contents of the data_xxx table column is assumed ** to be a "fossil delta" - a patch to be applied to a blob value in the ** format used by the fossil source-code management system. In this case -** the existing value within the target database table must be of type BLOB. +** the existing value within the target database table must be of type BLOB. ** It is replaced by the result of applying the specified fossil delta to ** itself. ** ** If the target database table is a virtual table or a table with no PRIMARY -** KEY, the rbu_control value should not include a character corresponding +** KEY, the rbu_control value should not include a character corresponding ** to the rbu_rowid value. For example, this: ** -** INSERT INTO data_ft1(a, b, rbu_rowid, rbu_control) +** INSERT INTO data_ft1(a, b, rbu_rowid, rbu_control) ** VALUES(NULL, 'usa', 12, '.x'); ** ** causes a result similar to: @@ -176040,14 +212652,14 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** The data_xxx tables themselves should have no PRIMARY KEY declarations. ** However, RBU is more efficient if reading the rows in from each data_xxx ** table in "rowid" order is roughly the same as reading them sorted by -** the PRIMARY KEY of the corresponding target database table. In other -** words, rows should be sorted using the destination table PRIMARY KEY +** the PRIMARY KEY of the corresponding target database table. In other +** words, rows should be sorted using the destination table PRIMARY KEY ** fields before they are inserted into the data_xxx tables. ** ** USAGE ** -** The API declared below allows an application to apply an RBU update -** stored on disk to an existing target database. Essentially, the +** The API declared below allows an application to apply an RBU update +** stored on disk to an existing target database. Essentially, the ** application: ** ** 1) Opens an RBU handle using the sqlite3rbu_open() function. @@ -176058,24 +212670,24 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( ** ** 3) Calls the sqlite3rbu_step() function one or more times on ** the new handle. Each call to sqlite3rbu_step() performs a single -** b-tree operation, so thousands of calls may be required to apply +** b-tree operation, so thousands of calls may be required to apply ** a complete update. ** ** 4) Calls sqlite3rbu_close() to close the RBU update handle. If ** sqlite3rbu_step() has been called enough times to completely ** apply the update to the target database, then the RBU database -** is marked as fully applied. Otherwise, the state of the RBU -** update application is saved in the RBU database for later +** is marked as fully applied. Otherwise, the state of the RBU +** update application is saved in the RBU database for later ** resumption. ** ** See comments below for more detail on APIs. ** ** If an update is only partially applied to the target database by the -** time sqlite3rbu_close() is called, various state information is saved +** time sqlite3rbu_close() is called, various state information is saved ** within the RBU database. This allows subsequent processes to automatically ** resume the RBU update from where it left off. ** -** To remove all RBU extension state information, returning an RBU database +** To remove all RBU extension state information, returning an RBU database ** to its original contents, it is sufficient to drop all tables that begin ** with the prefix "rbu_" ** @@ -176111,21 +212723,21 @@ typedef struct sqlite3rbu sqlite3rbu; ** the path to the RBU database. Each call to this function must be matched ** by a call to sqlite3rbu_close(). When opening the databases, RBU passes ** the SQLITE_CONFIG_URI flag to sqlite3_open_v2(). So if either zTarget -** or zRbu begin with "file:", it will be interpreted as an SQLite +** or zRbu begin with "file:", it will be interpreted as an SQLite ** database URI, not a regular file name. ** -** If the zState argument is passed a NULL value, the RBU extension stores -** the current state of the update (how many rows have been updated, which +** If the zState argument is passed a NULL value, the RBU extension stores +** the current state of the update (how many rows have been updated, which ** indexes are yet to be updated etc.) within the RBU database itself. This ** can be convenient, as it means that the RBU application does not need to -** organize removing a separate state file after the update is concluded. -** Or, if zState is non-NULL, it must be a path to a database file in which +** organize removing a separate state file after the update is concluded. +** Or, if zState is non-NULL, it must be a path to a database file in which ** the RBU extension can store the state of the update. ** ** When resuming an RBU update, the zState argument must be passed the same ** value as when the RBU update was started. ** -** Once the RBU update is finished, the RBU extension does not +** Once the RBU update is finished, the RBU extension does not ** automatically remove any zState database file, even if it created it. ** ** By default, RBU uses the default VFS to access the files on disk. To @@ -176138,7 +212750,7 @@ typedef struct sqlite3rbu sqlite3rbu; ** the zipvfs_create_vfs() API below for details on using RBU with zipvfs. */ SQLITE_API sqlite3rbu *sqlite3rbu_open( - const char *zTarget, + const char *zTarget, const char *zRbu, const char *zState ); @@ -176148,13 +212760,13 @@ SQLITE_API sqlite3rbu *sqlite3rbu_open( ** An RBU vacuum is similar to SQLite's built-in VACUUM command, except ** that it can be suspended and resumed like an RBU update. ** -** The second argument to this function identifies a database in which -** to store the state of the RBU vacuum operation if it is suspended. The +** The second argument to this function identifies a database in which +** to store the state of the RBU vacuum operation if it is suspended. The ** first time sqlite3rbu_vacuum() is called, to start an RBU vacuum ** operation, the state database should either not exist or be empty -** (contain no tables). If an RBU vacuum is suspended by calling +** (contain no tables). If an RBU vacuum is suspended by calling ** sqlite3rbu_close() on the RBU handle before sqlite3rbu_step() has -** returned SQLITE_DONE, the vacuum state is stored in the state database. +** returned SQLITE_DONE, the vacuum state is stored in the state database. ** The vacuum can be resumed by calling this function to open a new RBU ** handle specifying the same target and state databases. ** @@ -176164,20 +212776,24 @@ SQLITE_API sqlite3rbu *sqlite3rbu_open( ** state database is not already present in the file-system, it is created ** with the same permissions as the target db is made. ** +** With an RBU vacuum, it is an SQLITE_MISUSE error if the name of the +** state database ends with "-vactmp". This name is reserved for internal +** use. +** ** This function does not delete the state database after an RBU vacuum ** is completed, even if it created it. However, if the call to ** sqlite3rbu_close() returns any value other than SQLITE_OK, the contents ** of the state tables within the state database are zeroed. This way, -** the next call to sqlite3rbu_vacuum() opens a handle that starts a +** the next call to sqlite3rbu_vacuum() opens a handle that starts a ** new RBU vacuum operation. ** ** As with sqlite3rbu_open(), Zipvfs users should rever to the comment -** describing the sqlite3rbu_create_vfs() API function below for -** a description of the complications associated with using RBU with +** describing the sqlite3rbu_create_vfs() API function below for +** a description of the complications associated with using RBU with ** zipvfs databases. */ SQLITE_API sqlite3rbu *sqlite3rbu_vacuum( - const char *zTarget, + const char *zTarget, const char *zState ); @@ -176189,7 +212805,7 @@ SQLITE_API sqlite3rbu *sqlite3rbu_vacuum( ** is removed entirely. If the second parameter is negative, the limit is ** not modified (this is useful for querying the current limit). ** -** In all cases the returned value is the current limit in bytes (zero +** In all cases the returned value is the current limit in bytes (zero ** indicates unlimited). ** ** If the temp space limit is exceeded during operation, an SQLITE_FULL @@ -176198,13 +212814,13 @@ SQLITE_API sqlite3rbu *sqlite3rbu_vacuum( SQLITE_API sqlite3_int64 sqlite3rbu_temp_size_limit(sqlite3rbu*, sqlite3_int64); /* -** Return the current amount of temp file space, in bytes, currently used by +** Return the current amount of temp file space, in bytes, currently used by ** the RBU handle passed as the only argument. */ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu*); /* -** Internally, each RBU connection uses a separate SQLite database +** Internally, each RBU connection uses a separate SQLite database ** connection to access the target and rbu update databases. This ** API allows the application direct access to these database handles. ** @@ -176215,10 +212831,10 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu*); ** following scenarios: ** ** * If any target tables are virtual tables, it may be necessary to -** call sqlite3_create_module() on the target database handle to +** call sqlite3_create_module() on the target database handle to ** register the required virtual table implementations. ** -** * If the data_xxx tables in the RBU source database are virtual +** * If the data_xxx tables in the RBU source database are virtual ** tables, the application may need to call sqlite3_create_module() on ** the rbu update db handle to any required virtual table ** implementations. @@ -176237,12 +212853,12 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu*); SQLITE_API sqlite3 *sqlite3rbu_db(sqlite3rbu*, int bRbu); /* -** Do some work towards applying the RBU update to the target db. +** Do some work towards applying the RBU update to the target db. ** -** Return SQLITE_DONE if the update has been completely applied, or +** Return SQLITE_DONE if the update has been completely applied, or ** SQLITE_OK if no error occurs but there remains work to do to apply -** the RBU update. If an error does occur, some other error code is -** returned. +** the RBU update. If an error does occur, some other error code is +** returned. ** ** Once a call to sqlite3rbu_step() has returned a value other than ** SQLITE_OK, all subsequent calls on the same RBU handle are no-ops @@ -176255,7 +212871,7 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *pRbu); ** ** If a power failure or application crash occurs during an update, following ** system recovery RBU may resume the update from the point at which the state -** was last saved. In other words, from the most recent successful call to +** was last saved. In other words, from the most recent successful call to ** sqlite3rbu_close() or this function. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. @@ -176263,7 +212879,7 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *pRbu); SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *pRbu); /* -** Close an RBU handle. +** Close an RBU handle. ** ** If the RBU update has been completely applied, mark the RBU database ** as fully applied. Otherwise, assuming no error has occurred, save the @@ -176277,20 +212893,20 @@ SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *pRbu); ** eventually free any such buffer using sqlite3_free(). ** ** Otherwise, if no error occurs, this function returns SQLITE_OK if the -** update has been partially applied, or SQLITE_DONE if it has been +** update has been partially applied, or SQLITE_DONE if it has been ** completely applied. */ SQLITE_API int sqlite3rbu_close(sqlite3rbu *pRbu, char **pzErrmsg); /* -** Return the total number of key-value operations (inserts, deletes or +** Return the total number of key-value operations (inserts, deletes or ** updates) that have been performed on the target database since the ** current RBU update was started. */ SQLITE_API sqlite3_int64 sqlite3rbu_progress(sqlite3rbu *pRbu); /* -** Obtain permyriadage (permyriadage is to 10000 as percentage is to 100) +** Obtain permyriadage (permyriadage is to 10000 as percentage is to 100) ** progress indications for the two stages of an RBU update. This API may ** be useful for driving GUI progress indicators and similar. ** @@ -176303,16 +212919,16 @@ SQLITE_API sqlite3_int64 sqlite3rbu_progress(sqlite3rbu *pRbu); ** The update is visible to non-RBU clients during stage 2. During stage 1 ** non-RBU reader clients may see the original database. ** -** If this API is called during stage 2 of the update, output variable +** If this API is called during stage 2 of the update, output variable ** (*pnOne) is set to 10000 to indicate that stage 1 has finished and (*pnTwo) ** to a value between 0 and 10000 to indicate the permyriadage progress of -** stage 2. A value of 5000 indicates that stage 2 is half finished, +** stage 2. A value of 5000 indicates that stage 2 is half finished, ** 9000 indicates that it is 90% finished, and so on. ** -** If this API is called during stage 1 of the update, output variable +** If this API is called during stage 1 of the update, output variable ** (*pnTwo) is set to 0 to indicate that stage 2 has not yet started. The -** value to which (*pnOne) is set depends on whether or not the RBU -** database contains an "rbu_count" table. The rbu_count table, if it +** value to which (*pnOne) is set depends on whether or not the RBU +** database contains an "rbu_count" table. The rbu_count table, if it ** exists, must contain the same columns as the following: ** ** CREATE TABLE rbu_count(tbl TEXT PRIMARY KEY, cnt INTEGER) WITHOUT ROWID; @@ -176369,22 +212985,50 @@ SQLITE_API void sqlite3rbu_bp_progress(sqlite3rbu *pRbu, int *pnOne, int*pnTwo); SQLITE_API int sqlite3rbu_state(sqlite3rbu *pRbu); +/* +** As part of applying an RBU update or performing an RBU vacuum operation, +** the system must at one point move the *-oal file to the equivalent *-wal +** path. Normally, it does this by invoking POSIX function rename(2) directly. +** Except on WINCE platforms, where it uses win32 API MoveFileW(). This +** function may be used to register a callback that the RBU module will invoke +** instead of one of these APIs. +** +** If a callback is registered with an RBU handle, it invokes it instead +** of rename(2) when it needs to move a file within the file-system. The +** first argument passed to the xRename() callback is a copy of the second +** argument (pArg) passed to this function. The second is the full path +** to the file to move and the third the full path to which it should be +** moved. The callback function should return SQLITE_OK to indicate +** success. If an error occurs, it should return an SQLite error code. +** In this case the RBU operation will be abandoned and the error returned +** to the RBU user. +** +** Passing a NULL pointer in place of the xRename argument to this function +** restores the default behaviour. +*/ +SQLITE_API void sqlite3rbu_rename_handler( + sqlite3rbu *pRbu, + void *pArg, + int (*xRename)(void *pArg, const char *zOld, const char *zNew) +); + + /* ** Create an RBU VFS named zName that accesses the underlying file-system -** via existing VFS zParent. Or, if the zParent parameter is passed NULL, +** via existing VFS zParent. Or, if the zParent parameter is passed NULL, ** then the new RBU VFS uses the default system VFS to access the file-system. -** The new object is registered as a non-default VFS with SQLite before +** The new object is registered as a non-default VFS with SQLite before ** returning. ** ** Part of the RBU implementation uses a custom VFS object. Usually, this -** object is created and deleted automatically by RBU. +** object is created and deleted automatically by RBU. ** ** The exception is for applications that also use zipvfs. In this case, ** the custom VFS must be explicitly created by the user before the RBU ** handle is opened. The RBU VFS should be installed so that the zipvfs -** VFS uses the RBU VFS, which in turn uses any other VFS layers in use +** VFS uses the RBU VFS, which in turn uses any other VFS layers in use ** (for example multiplexor) to access the file-system. For example, -** to assemble an RBU enabled VFS stack that uses both zipvfs and +** to assemble an RBU enabled VFS stack that uses both zipvfs and ** multiplexor (error checking omitted): ** ** // Create a VFS named "multiplex" (not the default). @@ -176406,9 +213050,9 @@ SQLITE_API int sqlite3rbu_state(sqlite3rbu *pRbu); ** may be used by RBU clients. Attempting to use RBU with a zipvfs VFS stack ** that does not include the RBU layer results in an error. ** -** The overhead of adding the "rbu" VFS to the system is negligible for -** non-RBU users. There is no harm in an application accessing the -** file-system via "rbu" all the time, even if it only uses RBU functionality +** The overhead of adding the "rbu" VFS to the system is negligible for +** non-RBU users. There is no harm in an application accessing the +** file-system via "rbu" all the time, even if it only uses RBU functionality ** occasionally. */ SQLITE_API int sqlite3rbu_create_vfs(const char *zName, const char *zParent); @@ -176453,6 +213097,13 @@ SQLITE_API void sqlite3rbu_destroy_vfs(const char *zName); # define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} #endif +/* +** Name of the URI option that causes RBU to take an exclusive lock as +** part of the incremental checkpoint operation. +*/ +#define RBU_EXCLUSIVE_CHECKPOINT "rbu_exclusive_checkpoint" + + /* ** The rbu_state table is used to save the state of a partially applied ** update so that it can be resumed later. The table consists of integer @@ -176461,17 +213112,17 @@ SQLITE_API void sqlite3rbu_destroy_vfs(const char *zName); ** RBU_STATE_STAGE: ** May be set to integer values 1, 2, 4 or 5. As follows: ** 1: the *-rbu file is currently under construction. -** 2: the *-rbu file has been constructed, but not yet moved +** 2: the *-rbu file has been constructed, but not yet moved ** to the *-wal path. ** 4: the checkpoint is underway. ** 5: the rbu update has been checkpointed. ** ** RBU_STATE_TBL: -** Only valid if STAGE==1. The target database name of the table +** Only valid if STAGE==1. The target database name of the table ** currently being written. ** ** RBU_STATE_IDX: -** Only valid if STAGE==1. The target database name of the index +** Only valid if STAGE==1. The target database name of the index ** currently being written, or NULL if the main table is currently being ** updated. ** @@ -176491,14 +213142,14 @@ SQLITE_API void sqlite3rbu_destroy_vfs(const char *zName); ** be continued if this happens). ** ** RBU_STATE_COOKIE: -** Valid if STAGE==1. The current change-counter cookie value in the +** Valid if STAGE==1. The current change-counter cookie value in the ** target db file. ** ** RBU_STATE_OALSZ: ** Valid if STAGE==1. The size in bytes of the *-oal file. ** ** RBU_STATE_DATATBL: -** Only valid if STAGE==1. The RBU database name of the table +** Only valid if STAGE==1. The RBU database name of the table ** currently being read. */ #define RBU_STATE_STAGE 1 @@ -176525,6 +213176,7 @@ SQLITE_API void sqlite3rbu_destroy_vfs(const char *zName); typedef struct RbuFrame RbuFrame; typedef struct RbuObjIter RbuObjIter; typedef struct RbuState RbuState; +typedef struct RbuSpan RbuSpan; typedef struct rbu_vfs rbu_vfs; typedef struct rbu_file rbu_file; typedef struct RbuUpdateStmt RbuUpdateStmt; @@ -176569,12 +213221,17 @@ struct RbuUpdateStmt { RbuUpdateStmt *pNext; }; +struct RbuSpan { + const char *zSpan; + int nSpan; +}; + /* ** An iterator of this type is used to iterate through all objects in ** the target database that require updating. For each such table, the ** iterator visits, in order: ** -** * the table itself, +** * the table itself, ** * each index of the table (zero or more points to visit), and ** * a special "cleanup table" state. ** @@ -176583,7 +213240,12 @@ struct RbuUpdateStmt { ** it points to an array of flags nTblCol elements in size. The flag is ** set for each column that is either a part of the PK or a part of an ** index. Or clear otherwise. -** +** +** If there are one or more partial indexes on the table, all fields of +** this array set set to 1. This is because in that case, the module has +** no way to tell which fields will be required to add and remove entries +** from the partial indexes. +** */ struct RbuObjIter { sqlite3_stmt *pTblIter; /* Iterate through tables */ @@ -176613,6 +213275,9 @@ struct RbuObjIter { sqlite3_stmt *pInsert; /* Statement for INSERT operations */ sqlite3_stmt *pDelete; /* Statement for DELETE ops */ sqlite3_stmt *pTmpInsert; /* Insert into rbu_tmp_$zDataTbl */ + int nIdxCol; + RbuSpan *aIdxCol; + char *zIdxSql; /* Last UPDATE used (for PK b-tree updates only), or NULL. */ RbuUpdateStmt *pRbuUpdate; @@ -176662,7 +213327,7 @@ struct RbuFrame { ** ** nPhaseOneStep: ** If the RBU database contains an rbu_count table, this value is set to -** a running estimate of the number of b-tree operations required to +** a running estimate of the number of b-tree operations required to ** finish populating the *-oal file. This allows the sqlite3_bp_progress() ** API to calculate the permyriadage progress of populating the *-oal file ** using the formula: @@ -176682,7 +213347,7 @@ struct RbuFrame { ** ** * the RBU update contains any UPDATE operations. If the PK specified ** for an UPDATE operation does not exist in the target table, then -** no b-tree operations are required on index b-trees. Or if the +** no b-tree operations are required on index b-trees. Or if the ** specified PK does exist, then (nIndex*2) such operations are ** required (one delete and one insert on each index b-tree). ** @@ -176715,6 +213380,8 @@ struct sqlite3rbu { int nPagePerSector; /* Pages per sector for pTargetFd */ i64 iOalSz; i64 nPhaseOneStep; + void *pRenameArg; + int (*xRename)(void*, const char*, const char*); /* The following state variables are used as part of the incremental ** checkpoint stage (eStage==RBU_STAGE_CKPT). See comments surrounding @@ -176748,7 +213415,8 @@ struct rbu_vfs { sqlite3_vfs *pRealVfs; /* Underlying VFS */ sqlite3_mutex *mutex; /* Mutex to protect pMain */ sqlite3rbu *pRbu; /* Owner RBU object */ - rbu_file *pMain; /* Linked list of main db files */ + rbu_file *pMain; /* List of main db files */ + rbu_file *pMainRbu; /* List of main db files with pRbu!=0 */ }; /* @@ -176777,6 +213445,7 @@ struct rbu_file { const char *zWal; /* Wal filename for this main db file */ rbu_file *pWalFd; /* Wal file descriptor for this main db */ rbu_file *pMainNext; /* Next MAIN_DB file */ + rbu_file *pMainRbuNext; /* Next MAIN_DB file with pRbu!=0 */ }; /* @@ -177025,6 +213694,7 @@ static void rbuFossilDeltaFunc( }else{ nOut2 = rbuDeltaApply(aOrig, nOrig, aDelta, nDelta, aOut); if( nOut2!=nOut ){ + sqlite3_free(aOut); sqlite3_result_error(context, "corrupt fossil delta", -1); }else{ sqlite3_result_blob(context, aOut, nOut, sqlite3_free); @@ -177036,7 +213706,7 @@ static void rbuFossilDeltaFunc( /* ** Prepare the SQL statement in buffer zSql against database handle db. ** If successful, set *ppStmt to point to the new statement and return -** SQLITE_OK. +** SQLITE_OK. ** ** Otherwise, if an error does occur, set *ppStmt to NULL and return ** an SQLite error code. Additionally, set output variable *pzErrmsg to @@ -177044,7 +213714,7 @@ static void rbuFossilDeltaFunc( ** of the caller to (eventually) free this buffer using sqlite3_free(). */ static int prepareAndCollectError( - sqlite3 *db, + sqlite3 *db, sqlite3_stmt **ppStmt, char **pzErrmsg, const char *zSql @@ -177076,9 +213746,9 @@ static int resetAndCollectError(sqlite3_stmt *pStmt, char **pzErrmsg){ /* ** Unless it is NULL, argument zSql points to a buffer allocated using ** sqlite3_malloc containing an SQL statement. This function prepares the SQL -** statement against database db and frees the buffer. If statement -** compilation is successful, *ppStmt is set to point to the new statement -** handle and SQLITE_OK is returned. +** statement against database db and frees the buffer. If statement +** compilation is successful, *ppStmt is set to point to the new statement +** handle and SQLITE_OK is returned. ** ** Otherwise, if an error occurs, *ppStmt is set to NULL and an error code ** returned. In this case, *pzErrmsg may also be set to point to an error @@ -177089,7 +213759,7 @@ static int resetAndCollectError(sqlite3_stmt *pStmt, char **pzErrmsg){ ** In this case SQLITE_NOMEM is returned and *ppStmt set to NULL. */ static int prepareFreeAndCollectError( - sqlite3 *db, + sqlite3 *db, sqlite3_stmt **ppStmt, char **pzErrmsg, char *zSql @@ -177144,13 +213814,18 @@ static void rbuObjIterClearStatements(RbuObjIter *pIter){ sqlite3_free(pUp); pUp = pTmp; } - + sqlite3_free(pIter->aIdxCol); + sqlite3_free(pIter->zIdxSql); + pIter->pSelect = 0; pIter->pInsert = 0; pIter->pDelete = 0; pIter->pRbuUpdate = 0; pIter->pTmpInsert = 0; pIter->nCol = 0; + pIter->nIdxCol = 0; + pIter->aIdxCol = 0; + pIter->zIdxSql = 0; } /* @@ -177168,16 +213843,16 @@ static void rbuObjIterFinalize(RbuObjIter *pIter){ /* ** Advance the iterator to the next position. ** -** If no error occurs, SQLITE_OK is returned and the iterator is left -** pointing to the next entry. Otherwise, an error code and message is -** left in the RBU handle passed as the first argument. A copy of the +** If no error occurs, SQLITE_OK is returned and the iterator is left +** pointing to the next entry. Otherwise, an error code and message is +** left in the RBU handle passed as the first argument. A copy of the ** error code is returned. */ static int rbuObjIterNext(sqlite3rbu *p, RbuObjIter *pIter){ int rc = p->rc; if( rc==SQLITE_OK ){ - /* Free any SQLite statements used while processing the previous object */ + /* Free any SQLite statements used while processing the previous object */ rbuObjIterClearStatements(pIter); if( pIter->zIdx==0 ){ rc = sqlite3_exec(p->dbMain, @@ -177236,7 +213911,7 @@ static int rbuObjIterNext(sqlite3rbu *p, RbuObjIter *pIter){ ** The implementation of the rbu_target_name() SQL function. This function ** accepts one or two arguments. The first argument is the name of a table - ** the name of a table in the RBU database. The second, if it is present, is 1 -** for a view or 0 for a table. +** for a view or 0 for a table. ** ** For a non-vacuum RBU handle, if the table name matches the pattern: ** @@ -177265,6 +213940,7 @@ static void rbuTargetNameFunc( zIn = (const char*)sqlite3_value_text(argv[0]); if( zIn ){ if( rbuIsVacuum(p) ){ + assert( argc==2 || argc==1 ); if( argc==1 || 0==sqlite3_value_int(argv[1]) ){ sqlite3_result_text(pCtx, zIn, -1, SQLITE_STATIC); } @@ -177283,19 +213959,19 @@ static void rbuTargetNameFunc( /* ** Initialize the iterator structure passed as the second argument. ** -** If no error occurs, SQLITE_OK is returned and the iterator is left -** pointing to the first entry. Otherwise, an error code and message is -** left in the RBU handle passed as the first argument. A copy of the +** If no error occurs, SQLITE_OK is returned and the iterator is left +** pointing to the first entry. Otherwise, an error code and message is +** left in the RBU handle passed as the first argument. A copy of the ** error code is returned. */ static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){ int rc; memset(pIter, 0, sizeof(RbuObjIter)); - rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pTblIter, &p->zErrmsg, + rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pTblIter, &p->zErrmsg, sqlite3_mprintf( "SELECT rbu_target_name(name, type='view') AS target, name " - "FROM sqlite_master " + "FROM sqlite_schema " "WHERE type IN ('table', 'view') AND target IS NOT NULL " " %s " "ORDER BY name" @@ -177304,7 +213980,7 @@ static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){ if( rc==SQLITE_OK ){ rc = prepareAndCollectError(p->dbMain, &pIter->pIdxIter, &p->zErrmsg, "SELECT name, rootpage, sql IS NULL OR substr(8, 6)=='UNIQUE' " - " FROM main.sqlite_master " + " FROM main.sqlite_schema " " WHERE type='index' AND tbl_name = ?" ); } @@ -177320,7 +213996,7 @@ static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){ ** ** If an error has already occurred (p->rc is already set to something other ** than SQLITE_OK), then this function returns NULL without modifying the -** stored error code. In this case it still calls sqlite3_free() on any +** stored error code. In this case it still calls sqlite3_free() on any ** printf() parameters associated with %z conversions. */ static char *rbuMPrintf(sqlite3rbu *p, const char *zFmt, ...){ @@ -177366,16 +214042,16 @@ static int rbuMPrintfExec(sqlite3rbu *p, sqlite3 *db, const char *zFmt, ...){ } /* -** Attempt to allocate and return a pointer to a zeroed block of nByte -** bytes. +** Attempt to allocate and return a pointer to a zeroed block of nByte +** bytes. ** -** If an error (i.e. an OOM condition) occurs, return NULL and leave an -** error code in the rbu handle passed as the first argument. Or, if an -** error has already occurred when this function is called, return NULL +** If an error (i.e. an OOM condition) occurs, return NULL and leave an +** error code in the rbu handle passed as the first argument. Or, if an +** error has already occurred when this function is called, return NULL ** immediately without attempting the allocation or modifying the stored ** error code. */ -static void *rbuMalloc(sqlite3rbu *p, int nByte){ +static void *rbuMalloc(sqlite3rbu *p, sqlite3_int64 nByte){ void *pRet = 0; if( p->rc==SQLITE_OK ){ assert( nByte>0 ); @@ -177396,7 +214072,7 @@ static void *rbuMalloc(sqlite3rbu *p, int nByte){ ** error code in the RBU handle passed as the first argument. */ static void rbuAllocateIterArrays(sqlite3rbu *p, RbuObjIter *pIter, int nCol){ - int nByte = (2*sizeof(char*) + sizeof(int) + 3*sizeof(u8)) * nCol; + sqlite3_int64 nByte = (2*sizeof(char*) + sizeof(int) + 3*sizeof(u8)) * nCol; char **azNew; azNew = (char**)rbuMalloc(p, nByte); @@ -177423,14 +214099,15 @@ static void rbuAllocateIterArrays(sqlite3rbu *p, RbuObjIter *pIter, int nCol){ static char *rbuStrndup(const char *zStr, int *pRc){ char *zRet = 0; - assert( *pRc==SQLITE_OK ); - if( zStr ){ - size_t nCopy = strlen(zStr) + 1; - zRet = (char*)sqlite3_malloc64(nCopy); - if( zRet ){ - memcpy(zRet, zStr, nCopy); - }else{ - *pRc = SQLITE_NOMEM; + if( *pRc==SQLITE_OK ){ + if( zStr ){ + size_t nCopy = strlen(zStr) + 1; + zRet = (char*)sqlite3_malloc64(nCopy); + if( zRet ){ + memcpy(zRet, zStr, nCopy); + }else{ + *pRc = SQLITE_NOMEM; + } } } @@ -177467,7 +214144,7 @@ static void rbuFinalize(sqlite3rbu *p, sqlite3_stmt *pStmt){ ** RBU_PK_VTAB: Table is a virtual table. ** ** Argument *piPk is also of type (int*), and also points to an output -** parameter. Unless the table has an external primary key index +** parameter. Unless the table has an external primary key index ** (i.e. unless *peType is set to 3), then *piPk is set to zero. Or, ** if the table does have an external primary key index, then *piPk ** is set to the root page number of the primary key index before @@ -177475,12 +214152,12 @@ static void rbuFinalize(sqlite3rbu *p, sqlite3_stmt *pStmt){ ** ** ALGORITHM: ** -** if( no entry exists in sqlite_master ){ +** if( no entry exists in sqlite_schema ){ ** return RBU_PK_NOTABLE ** }else if( sql for the entry starts with "CREATE VIRTUAL" ){ ** return RBU_PK_VTAB ** }else if( "PRAGMA index_list()" for the table contains a "pk" index ){ -** if( the index that is the pk exists in sqlite_master ){ +** if( the index that is the pk exists in sqlite_schema ){ ** *piPK = rootpage of that index. ** return RBU_PK_EXTERNAL ** }else{ @@ -177500,9 +214177,9 @@ static void rbuTableType( int *piPk ){ /* - ** 0) SELECT count(*) FROM sqlite_master where name=%Q AND IsVirtual(%Q) + ** 0) SELECT count(*) FROM sqlite_schema where name=%Q AND IsVirtual(%Q) ** 1) PRAGMA index_list = ? - ** 2) SELECT count(*) FROM sqlite_master where name=%Q + ** 2) SELECT count(*) FROM sqlite_schema where name=%Q ** 3) PRAGMA table_info = ? */ sqlite3_stmt *aStmt[4] = {0, 0, 0, 0}; @@ -177511,10 +214188,12 @@ static void rbuTableType( *piPk = 0; assert( p->rc==SQLITE_OK ); - p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[0], &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[0], &p->zErrmsg, sqlite3_mprintf( - "SELECT (sql LIKE 'create virtual%%'), rootpage" - " FROM sqlite_master" + "SELECT " + " (sql COLLATE nocase BETWEEN 'CREATE VIRTUAL' AND 'CREATE VIRTUAM')," + " rootpage" + " FROM sqlite_schema" " WHERE name=%Q", zTab )); if( p->rc!=SQLITE_OK || sqlite3_step(aStmt[0])!=SQLITE_ROW ){ @@ -177527,7 +214206,7 @@ static void rbuTableType( } *piTnum = sqlite3_column_int(aStmt[0], 1); - p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[1], &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[1], &p->zErrmsg, sqlite3_mprintf("PRAGMA index_list=%Q",zTab) ); if( p->rc ) goto rbuTableType_end; @@ -177535,9 +214214,9 @@ static void rbuTableType( const u8 *zOrig = sqlite3_column_text(aStmt[1], 3); const u8 *zIdx = sqlite3_column_text(aStmt[1], 1); if( zOrig && zIdx && zOrig[0]=='p' ){ - p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[2], &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[2], &p->zErrmsg, sqlite3_mprintf( - "SELECT rootpage FROM sqlite_master WHERE name = %Q", zIdx + "SELECT rootpage FROM sqlite_schema WHERE name = %Q", zIdx )); if( p->rc==SQLITE_OK ){ if( sqlite3_step(aStmt[2])==SQLITE_ROW ){ @@ -177551,7 +214230,7 @@ static void rbuTableType( } } - p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[3], &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[3], &p->zErrmsg, sqlite3_mprintf("PRAGMA table_info=%Q",zTab) ); if( p->rc==SQLITE_OK ){ @@ -177590,14 +214269,21 @@ static void rbuObjIterCacheIndexedCols(sqlite3rbu *p, RbuObjIter *pIter){ pIter->nIndex = 0; while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pList) ){ const char *zIdx = (const char*)sqlite3_column_text(pList, 1); + int bPartial = sqlite3_column_int(pList, 4); sqlite3_stmt *pXInfo = 0; if( zIdx==0 ) break; + if( bPartial ){ + memset(pIter->abIndexed, 0x01, sizeof(u8)*pIter->nTblCol); + } p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", zIdx) ); while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ int iCid = sqlite3_column_int(pXInfo, 1); if( iCid>=0 ) pIter->abIndexed[iCid] = 1; + if( iCid==-2 ){ + memset(pIter->abIndexed, 0x01, sizeof(u8)*pIter->nTblCol); + } } rbuFinalize(p, pXInfo); bIndex = 1; @@ -177620,7 +214306,7 @@ static void rbuObjIterCacheIndexedCols(sqlite3rbu *p, RbuObjIter *pIter){ ** the table (not index) that the iterator currently points to. ** ** Return SQLITE_OK if successful, or an SQLite error code otherwise. If -** an error does occur, an error code and error message are also left in +** an error does occur, an error code and error message are also left in ** the RBU handle. */ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ @@ -177642,7 +214328,7 @@ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ if( p->rc ) return p->rc; if( pIter->zIdx==0 ) pIter->iTnum = iTnum; - assert( pIter->eType==RBU_PK_NONE || pIter->eType==RBU_PK_IPK + assert( pIter->eType==RBU_PK_NONE || pIter->eType==RBU_PK_IPK || pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_WITHOUT_ROWID || pIter->eType==RBU_PK_VTAB ); @@ -177650,7 +214336,7 @@ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ /* Populate the azTblCol[] and nTblCol variables based on the columns ** of the input table. Ignore any input table columns that begin with ** "rbu_". */ - p->rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, sqlite3_mprintf("SELECT * FROM '%q'", pIter->zDataTbl) ); if( p->rc==SQLITE_OK ){ @@ -177686,7 +214372,7 @@ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ ** present in the input table. Populate the abTblPk[], azTblType[] and ** aiTblOrder[] arrays at the same time. */ if( p->rc==SQLITE_OK ){ - p->rc = prepareFreeAndCollectError(p->dbMain, &pStmt, &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbMain, &pStmt, &p->zErrmsg, sqlite3_mprintf("PRAGMA table_info(%Q)", pIter->zTbl) ); } @@ -177712,7 +214398,8 @@ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ } pIter->azTblType[iOrder] = rbuStrndup(zType, &p->rc); - pIter->abTblPk[iOrder] = (iPk!=0); + assert( iPk>=0 ); + pIter->abTblPk[iOrder] = (u8)iPk; pIter->abNotNull[iOrder] = (u8)bNotNull || (iPk!=0); iOrder++; } @@ -177728,8 +214415,8 @@ static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ } /* -** This function constructs and returns a pointer to a nul-terminated -** string containing some SQL clause or list based on one or more of the +** This function constructs and returns a pointer to a nul-terminated +** string containing some SQL clause or list based on one or more of the ** column names currently stored in the pIter->azTblCol[] array. */ static char *rbuObjIterGetCollist( @@ -177748,23 +214435,232 @@ static char *rbuObjIterGetCollist( } /* -** This function is used to create a SELECT list (the list of SQL -** expressions that follows a SELECT keyword) for a SELECT statement -** used to read from an data_xxx or rbu_tmp_xxx table while updating the -** index object currently indicated by the iterator object passed as the -** second argument. A "PRAGMA index_xinfo = " statement is used +** Return a comma separated list of the quoted PRIMARY KEY column names, +** in order, for the current table. Before each column name, add the text +** zPre. After each column name, add the zPost text. Use zSeparator as +** the separator text (usually ", "). +*/ +static char *rbuObjIterGetPkList( + sqlite3rbu *p, /* RBU object */ + RbuObjIter *pIter, /* Object iterator for column names */ + const char *zPre, /* Before each quoted column name */ + const char *zSeparator, /* Separator to use between columns */ + const char *zPost /* After each quoted column name */ +){ + int iPk = 1; + char *zRet = 0; + const char *zSep = ""; + while( 1 ){ + int i; + for(i=0; inTblCol; i++){ + if( (int)pIter->abTblPk[i]==iPk ){ + const char *zCol = pIter->azTblCol[i]; + zRet = rbuMPrintf(p, "%z%s%s\"%w\"%s", zRet, zSep, zPre, zCol, zPost); + zSep = zSeparator; + break; + } + } + if( i==pIter->nTblCol ) break; + iPk++; + } + return zRet; +} + +/* +** This function is called as part of restarting an RBU vacuum within +** stage 1 of the process (while the *-oal file is being built) while +** updating a table (not an index). The table may be a rowid table or +** a WITHOUT ROWID table. It queries the target database to find the +** largest key that has already been written to the target table and +** constructs a WHERE clause that can be used to extract the remaining +** rows from the source table. For a rowid table, the WHERE clause +** is of the form: +** +** "WHERE _rowid_ > ?" +** +** and for WITHOUT ROWID tables: +** +** "WHERE (key1, key2) > (?, ?)" +** +** Instead of "?" placeholders, the actual WHERE clauses created by +** this function contain literal SQL values. +*/ +static char *rbuVacuumTableStart( + sqlite3rbu *p, /* RBU handle */ + RbuObjIter *pIter, /* RBU iterator object */ + int bRowid, /* True for a rowid table */ + const char *zWrite /* Target table name prefix */ +){ + sqlite3_stmt *pMax = 0; + char *zRet = 0; + if( bRowid ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pMax, &p->zErrmsg, + sqlite3_mprintf( + "SELECT max(_rowid_) FROM \"%s%w\"", zWrite, pIter->zTbl + ) + ); + if( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pMax) ){ + sqlite3_int64 iMax = sqlite3_column_int64(pMax, 0); + zRet = rbuMPrintf(p, " WHERE _rowid_ > %lld ", iMax); + } + rbuFinalize(p, pMax); + }else{ + char *zOrder = rbuObjIterGetPkList(p, pIter, "", ", ", " DESC"); + char *zSelect = rbuObjIterGetPkList(p, pIter, "quote(", "||','||", ")"); + char *zList = rbuObjIterGetPkList(p, pIter, "", ", ", ""); + + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pMax, &p->zErrmsg, + sqlite3_mprintf( + "SELECT %s FROM \"%s%w\" ORDER BY %s LIMIT 1", + zSelect, zWrite, pIter->zTbl, zOrder + ) + ); + if( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pMax) ){ + const char *zVal = (const char*)sqlite3_column_text(pMax, 0); + zRet = rbuMPrintf(p, " WHERE (%s) > (%s) ", zList, zVal); + } + rbuFinalize(p, pMax); + } + + sqlite3_free(zOrder); + sqlite3_free(zSelect); + sqlite3_free(zList); + } + return zRet; +} + +/* +** This function is called as part of restating an RBU vacuum when the +** current operation is writing content to an index. If possible, it +** queries the target index b-tree for the largest key already written to +** it, then composes and returns an expression that can be used in a WHERE +** clause to select the remaining required rows from the source table. +** It is only possible to return such an expression if: +** +** * The index contains no DESC columns, and +** * The last key written to the index before the operation was +** suspended does not contain any NULL values. +** +** The expression is of the form: +** +** (index-field1, index-field2, ...) > (?, ?, ...) +** +** except that the "?" placeholders are replaced with literal values. +** +** If the expression cannot be created, NULL is returned. In this case, +** the caller has to use an OFFSET clause to extract only the required +** rows from the sourct table, just as it does for an RBU update operation. +*/ +static char *rbuVacuumIndexStart( + sqlite3rbu *p, /* RBU handle */ + RbuObjIter *pIter /* RBU iterator object */ +){ + char *zOrder = 0; + char *zLhs = 0; + char *zSelect = 0; + char *zVector = 0; + char *zRet = 0; + int bFailed = 0; + const char *zSep = ""; + int iCol = 0; + sqlite3_stmt *pXInfo = 0; + + p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", pIter->zIdx) + ); + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ + int iCid = sqlite3_column_int(pXInfo, 1); + const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4); + const char *zCol; + if( sqlite3_column_int(pXInfo, 3) ){ + bFailed = 1; + break; + } + + if( iCid<0 ){ + if( pIter->eType==RBU_PK_IPK ){ + int i; + for(i=0; pIter->abTblPk[i]==0; i++); + assert( inTblCol ); + zCol = pIter->azTblCol[i]; + }else{ + zCol = "_rowid_"; + } + }else{ + zCol = pIter->azTblCol[iCid]; + } + + zLhs = rbuMPrintf(p, "%z%s \"%w\" COLLATE %Q", + zLhs, zSep, zCol, zCollate + ); + zOrder = rbuMPrintf(p, "%z%s \"rbu_imp_%d%w\" COLLATE %Q DESC", + zOrder, zSep, iCol, zCol, zCollate + ); + zSelect = rbuMPrintf(p, "%z%s quote(\"rbu_imp_%d%w\")", + zSelect, zSep, iCol, zCol + ); + zSep = ", "; + iCol++; + } + rbuFinalize(p, pXInfo); + if( bFailed ) goto index_start_out; + + if( p->rc==SQLITE_OK ){ + sqlite3_stmt *pSel = 0; + + p->rc = prepareFreeAndCollectError(p->dbMain, &pSel, &p->zErrmsg, + sqlite3_mprintf("SELECT %s FROM \"rbu_imp_%w\" ORDER BY %s LIMIT 1", + zSelect, pIter->zTbl, zOrder + ) + ); + if( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSel) ){ + zSep = ""; + for(iCol=0; iColnCol; iCol++){ + const char *zQuoted = (const char*)sqlite3_column_text(pSel, iCol); + if( zQuoted==0 ){ + p->rc = SQLITE_NOMEM; + }else if( zQuoted[0]=='N' ){ + bFailed = 1; + break; + } + zVector = rbuMPrintf(p, "%z%s%s", zVector, zSep, zQuoted); + zSep = ", "; + } + + if( !bFailed ){ + zRet = rbuMPrintf(p, "(%s) > (%s)", zLhs, zVector); + } + } + rbuFinalize(p, pSel); + } + + index_start_out: + sqlite3_free(zOrder); + sqlite3_free(zSelect); + sqlite3_free(zVector); + sqlite3_free(zLhs); + return zRet; +} + +/* +** This function is used to create a SELECT list (the list of SQL +** expressions that follows a SELECT keyword) for a SELECT statement +** used to read from an data_xxx or rbu_tmp_xxx table while updating the +** index object currently indicated by the iterator object passed as the +** second argument. A "PRAGMA index_xinfo = " statement is used ** to obtain the required information. ** ** If the index is of the following form: ** ** CREATE INDEX i1 ON t1(c, b COLLATE nocase); ** -** and "t1" is a table with an explicit INTEGER PRIMARY KEY column +** and "t1" is a table with an explicit INTEGER PRIMARY KEY column ** "ipk", the returned string is: ** ** "`c` COLLATE 'BINARY', `b` COLLATE 'NOCASE', `ipk` COLLATE 'BINARY'" ** -** As well as the returned string, three other malloc'd strings are +** As well as the returned string, three other malloc'd strings are ** returned via output parameters. As follows: ** ** pzImposterCols: ... @@ -177801,36 +214697,44 @@ static char *rbuObjIterGetIndexCols( int iCid = sqlite3_column_int(pXInfo, 1); int bDesc = sqlite3_column_int(pXInfo, 3); const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4); - const char *zCol; + const char *zCol = 0; const char *zType; - if( iCid<0 ){ - /* An integer primary key. If the table has an explicit IPK, use - ** its name. Otherwise, use "rbu_rowid". */ - if( pIter->eType==RBU_PK_IPK ){ - int i; - for(i=0; pIter->abTblPk[i]==0; i++); - assert( inTblCol ); - zCol = pIter->azTblCol[i]; - }else if( rbuIsVacuum(p) ){ - zCol = "_rowid_"; + if( iCid==-2 ){ + int iSeq = sqlite3_column_int(pXInfo, 0); + zRet = sqlite3_mprintf("%z%s(%.*s) COLLATE %Q", zRet, zCom, + pIter->aIdxCol[iSeq].nSpan, pIter->aIdxCol[iSeq].zSpan, zCollate + ); + zType = ""; + }else { + if( iCid<0 ){ + /* An integer primary key. If the table has an explicit IPK, use + ** its name. Otherwise, use "rbu_rowid". */ + if( pIter->eType==RBU_PK_IPK ){ + int i; + for(i=0; pIter->abTblPk[i]==0; i++); + assert( inTblCol ); + zCol = pIter->azTblCol[i]; + }else if( rbuIsVacuum(p) ){ + zCol = "_rowid_"; + }else{ + zCol = "rbu_rowid"; + } + zType = "INTEGER"; }else{ - zCol = "rbu_rowid"; + zCol = pIter->azTblCol[iCid]; + zType = pIter->azTblType[iCid]; } - zType = "INTEGER"; - }else{ - zCol = pIter->azTblCol[iCid]; - zType = pIter->azTblType[iCid]; + zRet = sqlite3_mprintf("%z%s\"%w\" COLLATE %Q", zRet, zCom,zCol,zCollate); } - zRet = sqlite3_mprintf("%z%s\"%w\" COLLATE %Q", zRet, zCom, zCol, zCollate); if( pIter->bUnique==0 || sqlite3_column_int(pXInfo, 5) ){ const char *zOrder = (bDesc ? " DESC" : ""); - zImpPK = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\"%s", + zImpPK = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\"%s", zImpPK, zCom, nBind, zCol, zOrder ); } - zImpCols = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\" %s COLLATE %Q", + zImpCols = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\" %s COLLATE %Q", zImpCols, zCom, nBind, zCol, zType, zCollate ); zWhere = sqlite3_mprintf( @@ -177876,7 +214780,7 @@ static char *rbuObjIterGetIndexCols( ** the text ", old._rowid_" to the returned value. */ static char *rbuObjIterGetOldlist( - sqlite3rbu *p, + sqlite3rbu *p, RbuObjIter *pIter, const char *zObj ){ @@ -177917,7 +214821,7 @@ static char *rbuObjIterGetOldlist( ** "b = ?1 AND c = ?2" */ static char *rbuObjIterGetWhere( - sqlite3rbu *p, + sqlite3rbu *p, RbuObjIter *pIter ){ char *zList = 0; @@ -177932,7 +214836,7 @@ static char *rbuObjIterGetWhere( zSep = " AND "; } } - zList = rbuMPrintf(p, + zList = rbuMPrintf(p, "_rowid_ = (SELECT id FROM rbu_imposter2 WHERE %z)", zList ); @@ -177972,7 +214876,7 @@ static void rbuBadControlError(sqlite3rbu *p){ ** ** The memory for the returned string is obtained from sqlite3_malloc(). ** It is the responsibility of the caller to eventually free it using -** sqlite3_free(). +** sqlite3_free(). ** ** If an OOM error is encountered when allocating space for the new ** string, an error code is left in the rbu handle passed as the first @@ -177996,19 +214900,19 @@ static char *rbuObjIterGetSetlist( for(i=0; inTblCol; i++){ char c = zMask[pIter->aiSrcOrder[i]]; if( c=='x' ){ - zList = rbuMPrintf(p, "%z%s\"%w\"=?%d", + zList = rbuMPrintf(p, "%z%s\"%w\"=?%d", zList, zSep, pIter->azTblCol[i], i+1 ); zSep = ", "; } else if( c=='d' ){ - zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_delta(\"%w\", ?%d)", + zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_delta(\"%w\", ?%d)", zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 ); zSep = ", "; } else if( c=='f' ){ - zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_fossil_delta(\"%w\", ?%d)", + zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_fossil_delta(\"%w\", ?%d)", zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 ); zSep = ", "; @@ -178026,7 +214930,7 @@ static char *rbuObjIterGetSetlist( ** ** The memory for the returned string is obtained from sqlite3_malloc(). ** It is the responsibility of the caller to eventually free it using -** sqlite3_free(). +** sqlite3_free(). ** ** If an OOM error is encountered when allocating space for the new ** string, an error code is left in the rbu handle passed as the first @@ -178036,7 +214940,7 @@ static char *rbuObjIterGetSetlist( */ static char *rbuObjIterGetBindlist(sqlite3rbu *p, int nBind){ char *zRet = 0; - int nByte = nBind*2 + 1; + sqlite3_int64 nByte = 2*(sqlite3_int64)nBind + 1; zRet = (char*)rbuMalloc(p, nByte); if( zRet ){ @@ -178050,8 +214954,8 @@ static char *rbuObjIterGetBindlist(sqlite3rbu *p, int nBind){ } /* -** The iterator currently points to a table (not index) of type -** RBU_PK_WITHOUT_ROWID. This function creates the PRIMARY KEY +** The iterator currently points to a table (not index) of type +** RBU_PK_WITHOUT_ROWID. This function creates the PRIMARY KEY ** declaration for the corresponding imposter table. For example, ** if the iterator points to a table created as: ** @@ -178068,7 +214972,7 @@ static char *rbuWithoutRowidPK(sqlite3rbu *p, RbuObjIter *pIter){ const char *zSep = "PRIMARY KEY("; sqlite3_stmt *pXList = 0; /* PRAGMA index_list = (pIter->zTbl) */ sqlite3_stmt *pXInfo = 0; /* PRAGMA index_xinfo = */ - + p->rc = prepareFreeAndCollectError(p->dbMain, &pXList, &p->zErrmsg, sqlite3_mprintf("PRAGMA main.index_list = %Q", pIter->zTbl) ); @@ -178106,7 +215010,7 @@ static char *rbuWithoutRowidPK(sqlite3rbu *p, RbuObjIter *pIter){ ** a table b-tree where the table has an external primary key. If the ** iterator passed as the second argument does not currently point to ** a table (not index) with an external primary key, this function is a -** no-op. +** no-op. ** ** Assuming the iterator does point to a table with an external PK, this ** function creates a WITHOUT ROWID imposter table named "rbu_imposter2" @@ -178133,8 +215037,8 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ /* Figure out the name of the primary key index for the current table. ** This is needed for the argument to "PRAGMA index_xinfo". Set ** zIdx to point to a nul-terminated string containing this name. */ - p->rc = prepareAndCollectError(p->dbMain, &pQuery, &p->zErrmsg, - "SELECT name FROM sqlite_master WHERE rootpage = ?" + p->rc = prepareAndCollectError(p->dbMain, &pQuery, &p->zErrmsg, + "SELECT name FROM sqlite_schema WHERE rootpage = ?" ); if( p->rc==SQLITE_OK ){ sqlite3_bind_int(pQuery, 1, tnum); @@ -178155,7 +215059,7 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ int iCid = sqlite3_column_int(pXInfo, 1); int bDesc = sqlite3_column_int(pXInfo, 3); const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4); - zCols = rbuMPrintf(p, "%z%sc%d %s COLLATE %Q", zCols, zComma, + zCols = rbuMPrintf(p, "%z%sc%d %s COLLATE %Q", zCols, zComma, iCid, pIter->azTblType[iCid], zCollate ); zPk = rbuMPrintf(p, "%z%sc%d%s", zPk, zComma, iCid, bDesc?" DESC":""); @@ -178167,7 +215071,7 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1, tnum); rbuMPrintfExec(p, p->dbMain, - "CREATE TABLE rbu_imposter2(%z, PRIMARY KEY(%z)) WITHOUT ROWID", + "CREATE TABLE rbu_imposter2(%z, PRIMARY KEY(%z)) WITHOUT ROWID", zCols, zPk ); sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 0); @@ -178175,7 +215079,7 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ } /* -** If an error has already occurred when this function is called, it +** If an error has already occurred when this function is called, it ** immediately returns zero (without doing any work). Or, if an error ** occurs during the execution of this function, it sets the error code ** in the sqlite3rbu object indicated by the first argument and returns @@ -178188,9 +215092,9 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ ** an imposter table are created, or zero otherwise. ** ** An imposter table is required in all cases except RBU_PK_VTAB. Only -** virtual tables are written to directly. The imposter table has the -** same schema as the actual target table (less any UNIQUE constraints). -** More precisely, the "same schema" means the same columns, types, +** virtual tables are written to directly. The imposter table has the +** same schema as the actual target table (less any UNIQUE constraints). +** More precisely, the "same schema" means the same columns, types, ** collation sequences. For tables that do not have an external PRIMARY ** KEY, it also means the same PRIMARY KEY declaration. */ @@ -178216,7 +215120,7 @@ static void rbuCreateImposterTable(sqlite3rbu *p, RbuObjIter *pIter){ ** "PRIMARY KEY" to the imposter table column declaration. */ zPk = "PRIMARY KEY "; } - zSql = rbuMPrintf(p, "%z%s\"%w\" %s %sCOLLATE %Q%s", + zSql = rbuMPrintf(p, "%z%s\"%w\" %s %sCOLLATE %Q%s", zSql, zComma, zCol, pIter->azTblType[iCol], zPk, zColl, (pIter->abNotNull[iCol] ? " NOT NULL" : "") ); @@ -178231,8 +215135,8 @@ static void rbuCreateImposterTable(sqlite3rbu *p, RbuObjIter *pIter){ } sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1, tnum); - rbuMPrintfExec(p, p->dbMain, "CREATE TABLE \"rbu_imp_%w\"(%z)%s", - pIter->zTbl, zSql, + rbuMPrintfExec(p, p->dbMain, "CREATE TABLE \"rbu_imp_%w\"(%z)%s", + pIter->zTbl, zSql, (pIter->eType==RBU_PK_WITHOUT_ROWID ? " WITHOUT ROWID" : "") ); sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 0); @@ -178246,12 +215150,12 @@ static void rbuCreateImposterTable(sqlite3rbu *p, RbuObjIter *pIter){ ** INSERT INTO rbu_tmp_xxx VALUES(?, ?, ? ...); ** ** The number of bound variables is equal to the number of columns in -** the target table, plus one (for the rbu_control column), plus one more -** (for the rbu_rowid column) if the target table is an implicit IPK or +** the target table, plus one (for the rbu_control column), plus one more +** (for the rbu_rowid column) if the target table is an implicit IPK or ** virtual table. */ static void rbuObjIterPrepareTmpInsert( - sqlite3rbu *p, + sqlite3rbu *p, RbuObjIter *pIter, const char *zCollist, const char *zRbuRowid @@ -178262,14 +215166,14 @@ static void rbuObjIterPrepareTmpInsert( assert( pIter->pTmpInsert==0 ); p->rc = prepareFreeAndCollectError( p->dbRbu, &pIter->pTmpInsert, &p->zErrmsg, sqlite3_mprintf( - "INSERT INTO %s.'rbu_tmp_%q'(rbu_control,%s%s) VALUES(%z)", + "INSERT INTO %s.'rbu_tmp_%q'(rbu_control,%s%s) VALUES(%z)", p->zStateDb, pIter->zDataTbl, zCollist, zRbuRowid, zBind )); } } static void rbuTmpInsertFunc( - sqlite3_context *pCtx, + sqlite3_context *pCtx, int nVal, sqlite3_value **apVal ){ @@ -178278,8 +215182,8 @@ static void rbuTmpInsertFunc( int i; assert( sqlite3_value_int(apVal[0])!=0 - || p->objiter.eType==RBU_PK_EXTERNAL - || p->objiter.eType==RBU_PK_NONE + || p->objiter.eType==RBU_PK_EXTERNAL + || p->objiter.eType==RBU_PK_NONE ); if( sqlite3_value_int(apVal[0])!=0 ){ p->nPhaseOneStep += p->objiter.nIndex; @@ -178298,13 +215202,108 @@ static void rbuTmpInsertFunc( } } +static char *rbuObjIterGetIndexWhere(sqlite3rbu *p, RbuObjIter *pIter){ + sqlite3_stmt *pStmt = 0; + int rc = p->rc; + char *zRet = 0; + + assert( pIter->zIdxSql==0 && pIter->nIdxCol==0 && pIter->aIdxCol==0 ); + + if( rc==SQLITE_OK ){ + rc = prepareAndCollectError(p->dbMain, &pStmt, &p->zErrmsg, + "SELECT trim(sql) FROM sqlite_schema WHERE type='index' AND name=?" + ); + } + if( rc==SQLITE_OK ){ + int rc2; + rc = sqlite3_bind_text(pStmt, 1, pIter->zIdx, -1, SQLITE_STATIC); + if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ + char *zSql = (char*)sqlite3_column_text(pStmt, 0); + if( zSql ){ + pIter->zIdxSql = zSql = rbuStrndup(zSql, &rc); + } + if( zSql ){ + int nParen = 0; /* Number of open parenthesis */ + int i; + int iIdxCol = 0; + int nIdxAlloc = 0; + for(i=0; zSql[i]; i++){ + char c = zSql[i]; + + /* If necessary, grow the pIter->aIdxCol[] array */ + if( iIdxCol==nIdxAlloc ){ + RbuSpan *aIdxCol = (RbuSpan*)sqlite3_realloc( + pIter->aIdxCol, (nIdxAlloc+16)*sizeof(RbuSpan) + ); + if( aIdxCol==0 ){ + rc = SQLITE_NOMEM; + break; + } + pIter->aIdxCol = aIdxCol; + nIdxAlloc += 16; + } + + if( c=='(' ){ + if( nParen==0 ){ + assert( iIdxCol==0 ); + pIter->aIdxCol[0].zSpan = &zSql[i+1]; + } + nParen++; + } + else if( c==')' ){ + nParen--; + if( nParen==0 ){ + int nSpan = &zSql[i] - pIter->aIdxCol[iIdxCol].zSpan; + pIter->aIdxCol[iIdxCol++].nSpan = nSpan; + i++; + break; + } + }else if( c==',' && nParen==1 ){ + int nSpan = &zSql[i] - pIter->aIdxCol[iIdxCol].zSpan; + pIter->aIdxCol[iIdxCol++].nSpan = nSpan; + pIter->aIdxCol[iIdxCol].zSpan = &zSql[i+1]; + }else if( c=='"' || c=='\'' || c=='`' ){ + for(i++; 1; i++){ + if( zSql[i]==c ){ + if( zSql[i+1]!=c ) break; + i++; + } + } + }else if( c=='[' ){ + for(i++; 1; i++){ + if( zSql[i]==']' ) break; + } + }else if( c=='-' && zSql[i+1]=='-' ){ + for(i=i+2; zSql[i] && zSql[i]!='\n'; i++); + if( zSql[i]=='\0' ) break; + }else if( c=='/' && zSql[i+1]=='*' ){ + for(i=i+2; zSql[i] && (zSql[i]!='*' || zSql[i+1]!='/'); i++); + if( zSql[i]=='\0' ) break; + i++; + } + } + if( zSql[i] ){ + zRet = rbuStrndup(&zSql[i], &rc); + } + pIter->nIdxCol = iIdxCol; + } + } + + rc2 = sqlite3_finalize(pStmt); + if( rc==SQLITE_OK ) rc = rc2; + } + + p->rc = rc; + return zRet; +} + /* -** Ensure that the SQLite statement handles required to update the -** target database object currently indicated by the iterator passed +** Ensure that the SQLite statement handles required to update the +** target database object currently indicated by the iterator passed ** as the second argument are available. */ static int rbuObjIterPrepareAll( - sqlite3rbu *p, + sqlite3rbu *p, RbuObjIter *pIter, int nOffset /* Add "LIMIT -1 OFFSET $nOffset" to SELECT */ ){ @@ -178327,9 +215326,11 @@ static int rbuObjIterPrepareAll( char *zImposterPK = 0; /* Primary key declaration for imposter */ char *zWhere = 0; /* WHERE clause on PK columns */ char *zBind = 0; + char *zPart = 0; int nBind = 0; assert( pIter->eType!=RBU_PK_VTAB ); + zPart = rbuObjIterGetIndexWhere(p, pIter); zCollist = rbuObjIterGetIndexCols( p, pIter, &zImposterCols, &zImposterPK, &zWhere, &nBind ); @@ -178365,39 +215366,58 @@ static int rbuObjIterPrepareAll( if( p->rc==SQLITE_OK ){ char *zSql; if( rbuIsVacuum(p) ){ + char *zStart = 0; + if( nOffset ){ + zStart = rbuVacuumIndexStart(p, pIter); + if( zStart ){ + sqlite3_free(zLimit); + zLimit = 0; + } + } + zSql = sqlite3_mprintf( - "SELECT %s, 0 AS rbu_control FROM '%q' ORDER BY %s%s", - zCollist, + "SELECT %s, 0 AS rbu_control FROM '%q' %s %s %s ORDER BY %s%s", + zCollist, pIter->zDataTbl, + zPart, + (zStart ? (zPart ? "AND" : "WHERE") : ""), zStart, zCollist, zLimit ); + sqlite3_free(zStart); }else if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ zSql = sqlite3_mprintf( - "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' ORDER BY %s%s", + "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' %s ORDER BY %s%s", zCollist, p->zStateDb, pIter->zDataTbl, - zCollist, zLimit + zPart, zCollist, zLimit ); }else{ zSql = sqlite3_mprintf( - "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' " + "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' %s " "UNION ALL " "SELECT %s, rbu_control FROM '%q' " - "WHERE typeof(rbu_control)='integer' AND rbu_control!=1 " + "%s %s typeof(rbu_control)='integer' AND rbu_control!=1 " "ORDER BY %s%s", - zCollist, p->zStateDb, pIter->zDataTbl, - zCollist, pIter->zDataTbl, + zCollist, p->zStateDb, pIter->zDataTbl, zPart, + zCollist, pIter->zDataTbl, + zPart, + (zPart ? "AND" : "WHERE"), zCollist, zLimit ); } - p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, zSql); + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbRbu,&pIter->pSelect,pz,zSql); + }else{ + sqlite3_free(zSql); + } } sqlite3_free(zImposterCols); sqlite3_free(zImposterPK); sqlite3_free(zWhere); sqlite3_free(zBind); + sqlite3_free(zPart); }else{ int bRbuRowid = (pIter->eType==RBU_PK_VTAB) ||(pIter->eType==RBU_PK_NONE) @@ -178422,7 +215442,7 @@ static int rbuObjIterPrepareAll( if( p->rc==SQLITE_OK ){ p->rc = prepareFreeAndCollectError(p->dbMain, &pIter->pInsert, pz, sqlite3_mprintf( - "INSERT INTO \"%s%w\"(%s%s) VALUES(%s)", + "INSERT INTO \"%s%w\"(%s%s) VALUES(%s)", zWrite, zTbl, zCollist, (bRbuRowid ? ", _rowid_" : ""), zBindings ) ); @@ -178490,18 +215510,42 @@ static int rbuObjIterPrepareAll( /* Create the SELECT statement to read keys from data_xxx */ if( p->rc==SQLITE_OK ){ const char *zRbuRowid = ""; + char *zStart = 0; + char *zOrder = 0; if( bRbuRowid ){ zRbuRowid = rbuIsVacuum(p) ? ",_rowid_ " : ",rbu_rowid"; } - p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, - sqlite3_mprintf( - "SELECT %s,%s rbu_control%s FROM '%q'%s", - zCollist, - (rbuIsVacuum(p) ? "0 AS " : ""), - zRbuRowid, - pIter->zDataTbl, zLimit - ) - ); + + if( rbuIsVacuum(p) ){ + if( nOffset ){ + zStart = rbuVacuumTableStart(p, pIter, bRbuRowid, zWrite); + if( zStart ){ + sqlite3_free(zLimit); + zLimit = 0; + } + } + if( bRbuRowid ){ + zOrder = rbuMPrintf(p, "_rowid_"); + }else{ + zOrder = rbuObjIterGetPkList(p, pIter, "", ", ", ""); + } + } + + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, + sqlite3_mprintf( + "SELECT %s,%s rbu_control%s FROM '%q'%s %s %s %s", + zCollist, + (rbuIsVacuum(p) ? "0 AS " : ""), + zRbuRowid, + pIter->zDataTbl, (zStart ? zStart : ""), + (zOrder ? "ORDER BY" : ""), zOrder, + zLimit + ) + ); + } + sqlite3_free(zStart); + sqlite3_free(zOrder); } sqlite3_free(zWhere); @@ -178512,16 +215556,16 @@ static int rbuObjIterPrepareAll( sqlite3_free(zCollist); sqlite3_free(zLimit); } - + return p->rc; } /* ** Set output variable *ppStmt to point to an UPDATE statement that may ** be used to update the imposter table for the main table b-tree of the -** table object that pIter currently points to, assuming that the +** table object that pIter currently points to, assuming that the ** rbu_control column of the data_xyz table contains zMask. -** +** ** If the zMask string does not specify any columns to update, then this ** is not an error. Output variable *ppStmt is set to NULL in this case. */ @@ -178548,7 +215592,7 @@ static int rbuGetUpdateStmt( *pp = pUp->pNext; pUp->pNext = pIter->pRbuUpdate; pIter->pRbuUpdate = pUp; - *ppStmt = pUp->pUpdate; + *ppStmt = pUp->pUpdate; return SQLITE_OK; } nUp++; @@ -178578,7 +215622,7 @@ static int rbuGetUpdateStmt( const char *zPrefix = ""; if( pIter->eType!=RBU_PK_VTAB ) zPrefix = "rbu_imp_"; - zUpdate = sqlite3_mprintf("UPDATE \"%s%w\" SET %s WHERE %s", + zUpdate = sqlite3_mprintf("UPDATE \"%s%w\" SET %s WHERE %s", zPrefix, pIter->zTbl, zSet, zWhere ); p->rc = prepareFreeAndCollectError( @@ -178594,8 +215638,8 @@ static int rbuGetUpdateStmt( } static sqlite3 *rbuOpenDbhandle( - sqlite3rbu *p, - const char *zName, + sqlite3rbu *p, + const char *zName, int bUseVfs ){ sqlite3 *db = 0; @@ -178624,8 +215668,8 @@ static void rbuFreeState(RbuState *p){ } /* -** Allocate an RbuState object and load the contents of the rbu_state -** table into it. Return a pointer to the new object. It is the +** Allocate an RbuState object and load the contents of the rbu_state +** table into it. Return a pointer to the new object. It is the ** responsibility of the caller to eventually free the object using ** sqlite3_free(). ** @@ -178641,7 +215685,7 @@ static RbuState *rbuLoadState(sqlite3rbu *p){ pRet = (RbuState*)rbuMalloc(p, sizeof(RbuState)); if( pRet==0 ) return 0; - rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, + rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, sqlite3_mprintf("SELECT k, v FROM %s.rbu_state", p->zStateDb) ); while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ @@ -178681,7 +215725,7 @@ static RbuState *rbuLoadState(sqlite3rbu *p){ break; case RBU_STATE_OALSZ: - pRet->iOalSz = (u32)sqlite3_column_int64(pStmt, 1); + pRet->iOalSz = sqlite3_column_int64(pStmt, 1); break; case RBU_STATE_PHASEONESTEP: @@ -178708,19 +215752,25 @@ static RbuState *rbuLoadState(sqlite3rbu *p){ /* ** Open the database handle and attach the RBU database as "rbu". If an ** error occurs, leave an error code and message in the RBU handle. +** +** If argument dbMain is not NULL, then it is a database handle already +** open on the target database. Use this handle instead of opening a new +** one. */ -static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ +static void rbuOpenDatabase(sqlite3rbu *p, sqlite3 *dbMain, int *pbRetry){ assert( p->rc || (p->dbMain==0 && p->dbRbu==0) ); assert( p->rc || rbuIsVacuum(p) || p->zTarget!=0 ); + assert( dbMain==0 || rbuIsVacuum(p)==0 ); /* Open the RBU database */ p->dbRbu = rbuOpenDbhandle(p, p->zRbu, 1); + p->dbMain = dbMain; if( p->rc==SQLITE_OK && rbuIsVacuum(p) ){ sqlite3_file_control(p->dbRbu, "main", SQLITE_FCNTL_RBUCNT, (void*)p); if( p->zState==0 ){ const char *zFile = sqlite3_db_filename(p->dbRbu, "main"); - p->zState = rbuMPrintf(p, "file://%s-vacuum?modeof=%s", zFile, zFile); + p->zState = rbuMPrintf(p, "file:///%s-vacuum?modeof=%s", zFile, zFile); } } @@ -178749,9 +215799,9 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ int bOk = 0; sqlite3_stmt *pCnt = 0; p->rc = prepareAndCollectError(p->dbRbu, &pCnt, &p->zErrmsg, - "SELECT count(*) FROM stat.sqlite_master" + "SELECT count(*) FROM stat.sqlite_schema" ); - if( p->rc==SQLITE_OK + if( p->rc==SQLITE_OK && sqlite3_step(pCnt)==SQLITE_ROW && 1==sqlite3_column_int(pCnt, 0) ){ @@ -178764,7 +215814,7 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ p->rc = SQLITE_ERROR; p->zErrmsg = sqlite3_mprintf("invalid state database"); } - + if( p->rc==SQLITE_OK ){ p->rc = sqlite3_exec(p->dbRbu, "COMMIT", 0, 0, 0); } @@ -178818,7 +215868,7 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ if( *zExtra=='\0' ) zExtra = 0; } - zTarget = sqlite3_mprintf("file:%s-vacuum?rbu_memory=1%s%s", + zTarget = sqlite3_mprintf("file:%s-vactmp?rbu_memory=1%s%s", sqlite3_db_filename(p->dbRbu, "main"), (zExtra==0 ? "" : "&"), (zExtra==0 ? "" : zExtra) ); @@ -178833,19 +215883,19 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ } if( p->rc==SQLITE_OK ){ - p->rc = sqlite3_create_function(p->dbMain, + p->rc = sqlite3_create_function(p->dbMain, "rbu_tmp_insert", -1, SQLITE_UTF8, (void*)p, rbuTmpInsertFunc, 0, 0 ); } if( p->rc==SQLITE_OK ){ - p->rc = sqlite3_create_function(p->dbMain, + p->rc = sqlite3_create_function(p->dbMain, "rbu_fossil_delta", 2, SQLITE_UTF8, 0, rbuFossilDeltaFunc, 0, 0 ); } if( p->rc==SQLITE_OK ){ - p->rc = sqlite3_create_function(p->dbRbu, + p->rc = sqlite3_create_function(p->dbRbu, "rbu_target_name", -1, SQLITE_UTF8, (void*)p, rbuTargetNameFunc, 0, 0 ); } @@ -178853,9 +215903,9 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ if( p->rc==SQLITE_OK ){ p->rc = sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_RBU, (void*)p); } - rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlite_master"); + rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlite_schema"); - /* Mark the database file just opened as an RBU target database. If + /* Mark the database file just opened as an RBU target database. If ** this call returns SQLITE_NOTFOUND, then the RBU vfs is not in use. ** This is an error. */ if( p->rc==SQLITE_OK ){ @@ -178903,10 +215953,10 @@ static void rbuFileSuffix3(const char *zBase, char *z){ } /* -** Return the current wal-index header checksum for the target database +** Return the current wal-index header checksum for the target database ** as a 64-bit integer. ** -** The checksum is store in the first page of xShmMap memory as an 8-byte +** The checksum is store in the first page of xShmMap memory as an 8-byte ** blob starting at byte offset 40. */ static i64 rbuShmChecksum(sqlite3rbu *p){ @@ -178924,11 +215974,11 @@ static i64 rbuShmChecksum(sqlite3rbu *p){ /* ** This function is called as part of initializing or reinitializing an -** incremental checkpoint. +** incremental checkpoint. ** -** It populates the sqlite3rbu.aFrame[] array with the set of -** (wal frame -> db page) copy operations required to checkpoint the -** current wal file, and obtains the set of shm locks required to safely +** It populates the sqlite3rbu.aFrame[] array with the set of +** (wal frame -> db page) copy operations required to checkpoint the +** current wal file, and obtains the set of shm locks required to safely ** perform the copy operations directly on the file-system. ** ** If argument pState is not NULL, then the incremental checkpoint is @@ -178946,7 +215996,7 @@ static void rbuSetupCheckpoint(sqlite3rbu *p, RbuState *pState){ if( pState==0 ){ p->eStage = 0; if( p->rc==SQLITE_OK ){ - p->rc = sqlite3_exec(p->dbMain, "SELECT * FROM sqlite_master", 0, 0, 0); + p->rc = sqlite3_exec(p->dbMain, "SELECT * FROM sqlite_schema", 0, 0, 0); } } @@ -178963,26 +216013,26 @@ static void rbuSetupCheckpoint(sqlite3rbu *p, RbuState *pState){ ** would be read/written are recorded in the sqlite3rbu.aFrame[] ** array. ** - ** * Calls to xShmLock(UNLOCK) to release the exclusive shm WRITER, + ** * Calls to xShmLock(UNLOCK) to release the exclusive shm WRITER, ** READ0 and CHECKPOINT locks taken as part of the checkpoint are ** no-ops. These locks will not be released until the connection ** is closed. ** - ** * Attempting to xSync() the database file causes an SQLITE_INTERNAL + ** * Attempting to xSync() the database file causes an SQLITE_NOTICE ** error. ** ** As a result, unless an error (i.e. OOM or SQLITE_BUSY) occurs, the - ** checkpoint below fails with SQLITE_INTERNAL, and leaves the aFrame[] - ** array populated with a set of (frame -> page) mappings. Because the - ** WRITER, CHECKPOINT and READ0 locks are still held, it is safe to copy - ** data from the wal file into the database file according to the + ** checkpoint below fails with SQLITE_NOTICE, and leaves the aFrame[] + ** array populated with a set of (frame -> page) mappings. Because the + ** WRITER, CHECKPOINT and READ0 locks are still held, it is safe to copy + ** data from the wal file into the database file according to the ** contents of aFrame[]. */ if( p->rc==SQLITE_OK ){ int rc2; p->eStage = RBU_STAGE_CAPTURE; rc2 = sqlite3_exec(p->dbMain, "PRAGMA main.wal_checkpoint=restart", 0, 0,0); - if( rc2!=SQLITE_INTERNAL ) p->rc = rc2; + if( rc2!=SQLITE_NOTICE ) p->rc = rc2; } if( p->rc==SQLITE_OK && p->nFrame>0 ){ @@ -179008,9 +216058,9 @@ static void rbuSetupCheckpoint(sqlite3rbu *p, RbuState *pState){ p->nPagePerSector = 1; } - /* Call xSync() on the wal file. This causes SQLite to sync the - ** directory in which the target database and the wal file reside, in - ** case it has not been synced since the rename() call in + /* Call xSync() on the wal file. This causes SQLite to sync the + ** directory in which the target database and the wal file reside, in + ** case it has not been synced since the rename() call in ** rbuMoveOalFile(). */ p->rc = pWal->pMethods->xSync(pWal, SQLITE_SYNC_NORMAL); } @@ -179028,7 +216078,7 @@ static int rbuCaptureWalRead(sqlite3rbu *pRbu, i64 iOff, int iAmt){ if( pRbu->mLock!=mReq ){ pRbu->rc = SQLITE_BUSY; - return SQLITE_INTERNAL; + return SQLITE_NOTICE_RBU; } pRbu->pgsz = iAmt; @@ -179051,7 +216101,7 @@ static int rbuCaptureWalRead(sqlite3rbu *pRbu, i64 iOff, int iAmt){ /* ** Called when a page of data is written to offset iOff of the database -** file while the rbu handle is in capture mode. Record the page number +** file while the rbu handle is in capture mode. Record the page number ** of the page being written in the aFrame[] array. */ static int rbuCaptureDbWrite(sqlite3rbu *pRbu, i64 iOff){ @@ -179078,17 +216128,49 @@ static void rbuCheckpointFrame(sqlite3rbu *p, RbuFrame *pFrame){ p->rc = pDb->pMethods->xWrite(pDb, p->aBuf, p->pgsz, iOff); } +/* +** This value is copied from the definition of ZIPVFS_CTRL_FILE_POINTER +** in zipvfs.h. +*/ +#define RBU_ZIPVFS_CTRL_FILE_POINTER 230439 /* -** Take an EXCLUSIVE lock on the database file. +** Take an EXCLUSIVE lock on the database file. Return SQLITE_OK if +** successful, or an SQLite error code otherwise. */ -static void rbuLockDatabase(sqlite3rbu *p){ - sqlite3_file *pReal = p->pTargetFd->pReal; - assert( p->rc==SQLITE_OK ); - p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_SHARED); - if( p->rc==SQLITE_OK ){ - p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_EXCLUSIVE); +static int rbuLockDatabase(sqlite3 *db){ + int rc = SQLITE_OK; + sqlite3_file *fd = 0; + + sqlite3_file_control(db, "main", RBU_ZIPVFS_CTRL_FILE_POINTER, &fd); + if( fd ){ + sqlite3_file_control(db, "main", SQLITE_FCNTL_FILE_POINTER, &fd); + rc = fd->pMethods->xLock(fd, SQLITE_LOCK_SHARED); + if( rc==SQLITE_OK ){ + rc = fd->pMethods->xUnlock(fd, SQLITE_LOCK_NONE); + } + sqlite3_file_control(db, "main", RBU_ZIPVFS_CTRL_FILE_POINTER, &fd); + }else{ + sqlite3_file_control(db, "main", SQLITE_FCNTL_FILE_POINTER, &fd); } + + if( rc==SQLITE_OK && fd->pMethods ){ + rc = fd->pMethods->xLock(fd, SQLITE_LOCK_SHARED); + if( rc==SQLITE_OK ){ + rc = fd->pMethods->xLock(fd, SQLITE_LOCK_EXCLUSIVE); + } + } + return rc; +} + +/* +** Return true if the database handle passed as the only argument +** was opened with the rbu_exclusive_checkpoint=1 URI parameter +** specified. Or false otherwise. +*/ +static int rbuExclusiveCheckpoint(sqlite3 *db){ + const char *zUri = sqlite3_db_filename(db, 0); + return sqlite3_uri_boolean(zUri, RBU_EXCLUSIVE_CHECKPOINT, 0); } #if defined(_WIN32_WCE) @@ -179119,7 +216201,7 @@ static LPWSTR rbuWinUtf8ToUnicode(const char *zFilename){ ** The RBU handle is currently in RBU_STAGE_OAL state, with a SHARED lock ** on the database file. This proc moves the *-oal file to the *-wal path, ** then reopens the database file (this time in vanilla, non-oal, WAL mode). -** If an error occurs, leave an error code and error message in the rbu +** If an error occurs, leave an error code and error message in the rbu ** handle. */ static void rbuMoveOalFile(sqlite3rbu *p){ @@ -179141,54 +216223,43 @@ static void rbuMoveOalFile(sqlite3rbu *p){ }else{ /* Move the *-oal file to *-wal. At this point connection p->db is ** holding a SHARED lock on the target database file (because it is - ** in WAL mode). So no other connection may be writing the db. + ** in WAL mode). So no other connection may be writing the db. ** ** In order to ensure that there are no database readers, an EXCLUSIVE ** lock is obtained here before the *-oal is moved to *-wal. */ - rbuLockDatabase(p); + sqlite3 *dbMain = 0; + rbuFileSuffix3(zBase, zWal); + rbuFileSuffix3(zBase, zOal); + + /* Re-open the databases. */ + rbuObjIterFinalize(&p->objiter); + sqlite3_close(p->dbRbu); + sqlite3_close(p->dbMain); + p->dbMain = 0; + p->dbRbu = 0; + + dbMain = rbuOpenDbhandle(p, p->zTarget, 1); + if( dbMain ){ + assert( p->rc==SQLITE_OK ); + p->rc = rbuLockDatabase(dbMain); + } + if( p->rc==SQLITE_OK ){ - rbuFileSuffix3(zBase, zWal); - rbuFileSuffix3(zBase, zOal); + p->rc = p->xRename(p->pRenameArg, zOal, zWal); + } - /* Re-open the databases. */ - rbuObjIterFinalize(&p->objiter); - sqlite3_close(p->dbRbu); - sqlite3_close(p->dbMain); - p->dbMain = 0; - p->dbRbu = 0; + if( p->rc!=SQLITE_OK + || rbuIsVacuum(p) + || rbuExclusiveCheckpoint(dbMain)==0 + ){ + sqlite3_close(dbMain); + dbMain = 0; + } -#if defined(_WIN32_WCE) - { - LPWSTR zWideOal; - LPWSTR zWideWal; - - zWideOal = rbuWinUtf8ToUnicode(zOal); - if( zWideOal ){ - zWideWal = rbuWinUtf8ToUnicode(zWal); - if( zWideWal ){ - if( MoveFileW(zWideOal, zWideWal) ){ - p->rc = SQLITE_OK; - }else{ - p->rc = SQLITE_IOERR; - } - sqlite3_free(zWideWal); - }else{ - p->rc = SQLITE_IOERR_NOMEM; - } - sqlite3_free(zWideOal); - }else{ - p->rc = SQLITE_IOERR_NOMEM; - } - } -#else - p->rc = rename(zOal, zWal) ? SQLITE_IOERR : SQLITE_OK; -#endif - - if( p->rc==SQLITE_OK ){ - rbuOpenDatabase(p, 0); - rbuSetupCheckpoint(p, 0); - } + if( p->rc==SQLITE_OK ){ + rbuOpenDatabase(p, dbMain, 0); + rbuSetupCheckpoint(p, 0); } } @@ -179299,8 +216370,8 @@ static void rbuStepOneOp(sqlite3rbu *p, int eType){ /* If this is an INSERT into a table b-tree and the table has an ** explicit INTEGER PRIMARY KEY, check that this is not an attempt ** to write a NULL into the IPK column. That is not permitted. */ - if( eType==RBU_INSERT - && pIter->zIdx==0 && pIter->eType==RBU_PK_IPK && pIter->abTblPk[i] + if( eType==RBU_INSERT + && pIter->zIdx==0 && pIter->eType==RBU_PK_IPK && pIter->abTblPk[i] && sqlite3_column_type(pIter->pSelect, i)==SQLITE_NULL ){ p->rc = SQLITE_MISMATCH; @@ -179317,18 +216388,18 @@ static void rbuStepOneOp(sqlite3rbu *p, int eType){ if( p->rc ) return; } if( pIter->zIdx==0 ){ - if( pIter->eType==RBU_PK_VTAB - || pIter->eType==RBU_PK_NONE - || (pIter->eType==RBU_PK_EXTERNAL && rbuIsVacuum(p)) + if( pIter->eType==RBU_PK_VTAB + || pIter->eType==RBU_PK_NONE + || (pIter->eType==RBU_PK_EXTERNAL && rbuIsVacuum(p)) ){ - /* For a virtual table, or a table with no primary key, the + /* For a virtual table, or a table with no primary key, the ** SELECT statement is: ** ** SELECT , rbu_control, rbu_rowid FROM .... ** ** Hence column_value(pIter->nCol+1). */ - assertColumnName(pIter->pSelect, pIter->nCol+1, + assertColumnName(pIter->pSelect, pIter->nCol+1, rbuIsVacuum(p) ? "rowid" : "rbu_rowid" ); pVal = sqlite3_column_value(pIter->pSelect, pIter->nCol+1); @@ -179392,8 +216463,8 @@ static int rbuStep(sqlite3rbu *p){ p->rc = sqlite3_bind_value(pUpdate, i+1, pVal); } } - if( p->rc==SQLITE_OK - && (pIter->eType==RBU_PK_VTAB || pIter->eType==RBU_PK_NONE) + if( p->rc==SQLITE_OK + && (pIter->eType==RBU_PK_VTAB || pIter->eType==RBU_PK_NONE) ){ /* Bind the rbu_rowid value to column _rowid_ */ assertColumnName(pIter->pSelect, pIter->nCol+1, "rbu_rowid"); @@ -179423,7 +216494,7 @@ static void rbuIncrSchemaCookie(sqlite3rbu *p){ int iCookie = 1000000; sqlite3_stmt *pStmt; - p->rc = prepareAndCollectError(dbread, &pStmt, &p->zErrmsg, + p->rc = prepareAndCollectError(dbread, &pStmt, &p->zErrmsg, "PRAGMA schema_version" ); if( p->rc==SQLITE_OK ){ @@ -179455,7 +216526,7 @@ static void rbuSaveState(sqlite3rbu *p, int eStage){ int rc; assert( p->zErrmsg==0 ); - rc = prepareFreeAndCollectError(p->dbRbu, &pInsert, &p->zErrmsg, + rc = prepareFreeAndCollectError(p->dbRbu, &pInsert, &p->zErrmsg, sqlite3_mprintf( "INSERT OR REPLACE INTO %s.rbu_state(k, v) VALUES " "(%d, %d), " @@ -179470,9 +216541,9 @@ static void rbuSaveState(sqlite3rbu *p, int eStage){ "(%d, %Q) ", p->zStateDb, RBU_STATE_STAGE, eStage, - RBU_STATE_TBL, p->objiter.zTbl, - RBU_STATE_IDX, p->objiter.zIdx, - RBU_STATE_ROW, p->nStep, + RBU_STATE_TBL, p->objiter.zTbl, + RBU_STATE_IDX, p->objiter.zIdx, + RBU_STATE_ROW, p->nStep, RBU_STATE_PROGRESS, p->nProgress, RBU_STATE_CKPT, p->iWalCksum, RBU_STATE_COOKIE, (i64)pFd->iCookie, @@ -179493,7 +216564,7 @@ static void rbuSaveState(sqlite3rbu *p, int eStage){ /* -** The second argument passed to this function is the name of a PRAGMA +** The second argument passed to this function is the name of a PRAGMA ** setting - "page_size", "auto_vacuum", "user_version" or "application_id". ** This function executes the following on sqlite3rbu.dbRbu: ** @@ -179512,7 +216583,7 @@ static void rbuSaveState(sqlite3rbu *p, int eStage){ static void rbuCopyPragma(sqlite3rbu *p, const char *zPragma){ if( p->rc==SQLITE_OK ){ sqlite3_stmt *pPragma = 0; - p->rc = prepareFreeAndCollectError(p->dbRbu, &pPragma, &p->zErrmsg, + p->rc = prepareFreeAndCollectError(p->dbRbu, &pPragma, &p->zErrmsg, sqlite3_mprintf("PRAGMA main.%s", zPragma) ); if( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pPragma) ){ @@ -179525,7 +216596,7 @@ static void rbuCopyPragma(sqlite3rbu *p, const char *zPragma){ } /* -** The RBU handle passed as the only argument has just been opened and +** The RBU handle passed as the only argument has just been opened and ** the state database is empty. If this RBU handle was opened for an ** RBU vacuum operation, create the schema in the target db. */ @@ -179536,8 +216607,8 @@ static void rbuCreateTargetSchema(sqlite3rbu *p){ assert( rbuIsVacuum(p) ); p->rc = sqlite3_exec(p->dbMain, "PRAGMA writable_schema=1", 0,0, &p->zErrmsg); if( p->rc==SQLITE_OK ){ - p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg, - "SELECT sql FROM sqlite_master WHERE sql!='' AND rootpage!=0" + p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg, + "SELECT sql FROM sqlite_schema WHERE sql!='' AND rootpage!=0" " AND name!='sqlite_sequence' " " ORDER BY type DESC" ); @@ -179551,14 +216622,14 @@ static void rbuCreateTargetSchema(sqlite3rbu *p){ if( p->rc!=SQLITE_OK ) return; if( p->rc==SQLITE_OK ){ - p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg, - "SELECT * FROM sqlite_master WHERE rootpage=0 OR rootpage IS NULL" + p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg, + "SELECT * FROM sqlite_schema WHERE rootpage=0 OR rootpage IS NULL" ); } if( p->rc==SQLITE_OK ){ - p->rc = prepareAndCollectError(p->dbMain, &pInsert, &p->zErrmsg, - "INSERT INTO sqlite_master VALUES(?,?,?,?,?)" + p->rc = prepareAndCollectError(p->dbMain, &pInsert, &p->zErrmsg, + "INSERT INTO sqlite_schema VALUES(?,?,?,?,?)" ); } @@ -179598,11 +216669,11 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *p){ while( p->rc==SQLITE_OK && pIter->zTbl ){ if( pIter->bCleanup ){ - /* Clean up the rbu_tmp_xxx table for the previous table. It + /* Clean up the rbu_tmp_xxx table for the previous table. It ** cannot be dropped as there are currently active SQL statements. ** But the contents can be deleted. */ if( rbuIsVacuum(p)==0 && pIter->abIndexed ){ - rbuMPrintfExec(p, p->dbRbu, + rbuMPrintfExec(p, p->dbRbu, "DELETE FROM %s.'rbu_tmp_%q'", p->zStateDb, pIter->zDataTbl ); } @@ -179652,10 +216723,10 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *p){ if( p->rc==SQLITE_OK ){ if( p->nStep>=p->nFrame ){ sqlite3_file *pDb = p->pTargetFd->pReal; - + /* Sync the db file */ p->rc = pDb->pMethods->xSync(pDb, SQLITE_SYNC_NORMAL); - + /* Update nBackfill */ if( p->rc==SQLITE_OK ){ void volatile *ptr; @@ -179664,7 +216735,7 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *p){ ((u32 volatile*)ptr)[24] = p->iMaxFrame; } } - + if( p->rc==SQLITE_OK ){ p->eStage = RBU_STAGE_DONE; p->rc = SQLITE_DONE; @@ -179672,7 +216743,7 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *p){ }else{ /* At one point the following block copied a single frame from the ** wal file to the database file. So that one call to sqlite3rbu_step() - ** checkpointed a single frame. + ** checkpointed a single frame. ** ** However, if the sector-size is larger than the page-size, and the ** application calls sqlite3rbu_savestate() or close() immediately @@ -179686,7 +216757,7 @@ SQLITE_API int sqlite3rbu_step(sqlite3rbu *p){ iSector = (pFrame->iDbPage-1) / p->nPagePerSector; rbuCheckpointFrame(p, pFrame); p->nStep++; - }while( p->nStepnFrame + }while( p->nStepnFrame && iSector==((p->aFrame[p->nStep].iDbPage-1) / p->nPagePerSector) && p->rc==SQLITE_OK ); @@ -179732,7 +216803,7 @@ static void rbuSetupOal(sqlite3rbu *p, RbuState *pState){ RbuObjIter *pIter = &p->objiter; int rc = SQLITE_OK; - while( rc==SQLITE_OK && pIter->zTbl && (pIter->bCleanup + while( rc==SQLITE_OK && pIter->zTbl && (pIter->bCleanup || rbuStrCompare(pIter->zIdx, pState->zIdx) || (pState->zDataTbl==0 && rbuStrCompare(pIter->zTbl, pState->zTbl)) || (pState->zDataTbl && rbuStrCompare(pIter->zDataTbl, pState->zDataTbl)) @@ -179762,7 +216833,8 @@ static void rbuSetupOal(sqlite3rbu *p, RbuState *pState){ static void rbuDeleteOalFile(sqlite3rbu *p){ char *zOal = rbuMPrintf(p, "%s-oal", p->zTarget); if( zOal ){ - sqlite3_vfs *pVfs = sqlite3_vfs_find(0); + sqlite3_vfs *pVfs = 0; + sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_VFS_POINTER, &pVfs); assert( pVfs && p->rc==SQLITE_OK && p->zErrmsg==0 ); pVfs->xDelete(pVfs, zOal, 0); sqlite3_free(zOal); @@ -179808,7 +216880,7 @@ static void rbuDeleteVfs(sqlite3rbu *p){ ** the number of auxilliary indexes on the table. */ static void rbuIndexCntFunc( - sqlite3_context *pCtx, + sqlite3_context *pCtx, int nVal, sqlite3_value **apVal ){ @@ -179816,11 +216888,12 @@ static void rbuIndexCntFunc( sqlite3_stmt *pStmt = 0; char *zErrmsg = 0; int rc; + sqlite3 *db = (rbuIsVacuum(p) ? p->dbRbu : p->dbMain); assert( nVal==1 ); - - rc = prepareFreeAndCollectError(p->dbMain, &pStmt, &zErrmsg, - sqlite3_mprintf("SELECT count(*) FROM sqlite_master " + + rc = prepareFreeAndCollectError(db, &pStmt, &zErrmsg, + sqlite3_mprintf("SELECT count(*) FROM sqlite_schema " "WHERE type='index' AND tbl_name = %Q", sqlite3_value_text(apVal[0])) ); if( rc!=SQLITE_OK ){ @@ -179834,7 +216907,7 @@ static void rbuIndexCntFunc( if( rc==SQLITE_OK ){ sqlite3_result_int(pCtx, nIndex); }else{ - sqlite3_result_error(pCtx, sqlite3_errmsg(p->dbMain), -1); + sqlite3_result_error(pCtx, sqlite3_errmsg(db), -1); } } @@ -179853,7 +216926,7 @@ static void rbuIndexCntFunc( ** and the cnt column the number of rows it contains. ** ** sqlite3rbu.nPhaseOneStep is initialized to the sum of (1 + nIndex) * cnt -** for all rows in the rbu_count table, where nIndex is the number of +** for all rows in the rbu_count table, where nIndex is the number of ** indexes on the corresponding target database table. */ static void rbuInitPhaseOneSteps(sqlite3rbu *p){ @@ -179863,15 +216936,15 @@ static void rbuInitPhaseOneSteps(sqlite3rbu *p){ p->nPhaseOneStep = -1; - p->rc = sqlite3_create_function(p->dbRbu, + p->rc = sqlite3_create_function(p->dbRbu, "rbu_index_cnt", 1, SQLITE_UTF8, (void*)p, rbuIndexCntFunc, 0, 0 ); - + /* Check for the rbu_count table. If it does not exist, or if an error ** occurs, nPhaseOneStep will be left set to -1. */ if( p->rc==SQLITE_OK ){ p->rc = prepareAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, - "SELECT 1 FROM sqlite_master WHERE tbl_name = 'rbu_count'" + "SELECT 1 FROM sqlite_schema WHERE tbl_name = 'rbu_count'" ); } if( p->rc==SQLITE_OK ){ @@ -179880,7 +216953,7 @@ static void rbuInitPhaseOneSteps(sqlite3rbu *p){ } p->rc = sqlite3_finalize(pStmt); } - + if( p->rc==SQLITE_OK && bExists ){ p->rc = prepareAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, "SELECT sum(cnt * (1 + rbu_index_cnt(rbu_target_name(tbl))))" @@ -179898,7 +216971,7 @@ static void rbuInitPhaseOneSteps(sqlite3rbu *p){ static sqlite3rbu *openRbuHandle( - const char *zTarget, + const char *zTarget, const char *zRbu, const char *zState ){ @@ -179913,6 +216986,7 @@ static sqlite3rbu *openRbuHandle( /* Create the custom VFS. */ memset(p, 0, sizeof(sqlite3rbu)); + sqlite3rbu_rename_handler(p, 0, 0); rbuCreateVfs(p); /* Open the target, RBU and state databases */ @@ -179936,11 +217010,11 @@ static sqlite3rbu *openRbuHandle( ** to be a wal-mode db. But, this may have happened due to an earlier ** RBU vacuum operation leaving an old wal file in the directory. ** If this is the case, it will have been checkpointed and deleted - ** when the handle was closed and a second attempt to open the + ** when the handle was closed and a second attempt to open the ** database may succeed. */ - rbuOpenDatabase(p, &bRetry); + rbuOpenDatabase(p, 0, &bRetry); if( bRetry ){ - rbuOpenDatabase(p, 0); + rbuOpenDatabase(p, 0, 0); } } @@ -179949,7 +217023,7 @@ static sqlite3rbu *openRbuHandle( assert( pState || p->rc!=SQLITE_OK ); if( p->rc==SQLITE_OK ){ - if( pState->eStage==0 ){ + if( pState->eStage==0 ){ rbuDeleteOalFile(p); rbuInitPhaseOneSteps(p); p->eStage = RBU_STAGE_OAL; @@ -179973,15 +217047,15 @@ static sqlite3rbu *openRbuHandle( } } - if( p->rc==SQLITE_OK + if( p->rc==SQLITE_OK && (p->eStage==RBU_STAGE_OAL || p->eStage==RBU_STAGE_MOVE) && pState->eStage!=0 ){ rbu_file *pFd = (rbuIsVacuum(p) ? p->pRbuFd : p->pTargetFd); - if( pFd->iCookie!=pState->iCookie ){ + if( pFd->iCookie!=pState->iCookie ){ /* At this point (pTargetFd->iCookie) contains the value of the - ** change-counter cookie (the thing that gets incremented when a - ** transaction is committed in rollback mode) currently stored on + ** change-counter cookie (the thing that gets incremented when a + ** transaction is committed in rollback mode) currently stored on ** page 1 of the database file. */ p->rc = SQLITE_BUSY; p->zErrmsg = sqlite3_mprintf("database modified during rbu %s", @@ -180018,7 +217092,7 @@ static sqlite3rbu *openRbuHandle( } /* Check if the main database is a zipvfs db. If it is, set the upper - ** level pager to use "journal_mode=off". This prevents it from + ** level pager to use "journal_mode=off". This prevents it from ** generating a large journal using a temp file. */ if( p->rc==SQLITE_OK ){ int frc = sqlite3_file_control(db, "main", SQLITE_FCNTL_ZIPVFS, 0); @@ -180035,6 +217109,14 @@ static sqlite3rbu *openRbuHandle( }else if( p->eStage==RBU_STAGE_MOVE ){ /* no-op */ }else if( p->eStage==RBU_STAGE_CKPT ){ + if( !rbuIsVacuum(p) && rbuExclusiveCheckpoint(p->dbMain) ){ + /* If the rbu_exclusive_checkpoint=1 URI parameter was specified + ** and an incremental checkpoint is being resumed, attempt an + ** exclusive lock on the db file. If this fails, so be it. */ + p->eStage = RBU_STAGE_DONE; + rbuLockDatabase(p->dbMain); + p->eStage = RBU_STAGE_CKPT; + } rbuSetupCheckpoint(p, pState); }else if( p->eStage==RBU_STAGE_DONE ){ p->rc = SQLITE_DONE; @@ -180064,15 +217146,14 @@ static sqlite3rbu *rbuMisuseError(void){ } /* -** Open and return a new RBU handle. +** Open and return a new RBU handle. */ SQLITE_API sqlite3rbu *sqlite3rbu_open( - const char *zTarget, + const char *zTarget, const char *zRbu, const char *zState ){ if( zTarget==0 || zRbu==0 ){ return rbuMisuseError(); } - /* TODO: Check that zTarget and zRbu are non-NULL */ return openRbuHandle(zTarget, zRbu, zState); } @@ -180080,10 +217161,16 @@ SQLITE_API sqlite3rbu *sqlite3rbu_open( ** Open a handle to begin or resume an RBU VACUUM operation. */ SQLITE_API sqlite3rbu *sqlite3rbu_vacuum( - const char *zTarget, + const char *zTarget, const char *zState ){ if( zTarget==0 ){ return rbuMisuseError(); } + if( zState ){ + int n = strlen(zState); + if( n>=7 && 0==memcmp("-vactmp", &zState[n-7], 7) ){ + return rbuMisuseError(); + } + } /* TODO: Check that both arguments are non-NULL */ return openRbuHandle(0, zTarget, zState); } @@ -180148,8 +217235,8 @@ SQLITE_API int sqlite3rbu_close(sqlite3rbu *p, char **pzErrmsg){ rbuObjIterFinalize(&p->objiter); /* If this is an RBU vacuum handle and the vacuum has either finished - ** successfully or encountered an error, delete the contents of the - ** state table. This causes the next call to sqlite3rbu_vacuum() + ** successfully or encountered an error, delete the contents of the + ** state table. This causes the next call to sqlite3rbu_vacuum() ** specifying the current target and state databases to start a new ** vacuum from scratch. */ if( rbuIsVacuum(p) && p->rc!=SQLITE_OK && p->dbRbu ){ @@ -180182,7 +217269,7 @@ SQLITE_API int sqlite3rbu_close(sqlite3rbu *p, char **pzErrmsg){ } /* -** Return the total number of key-value operations (inserts, deletes or +** Return the total number of key-value operations (inserts, deletes or ** updates) that have been performed on the target database since the ** current RBU update was started. */ @@ -180280,7 +217367,10 @@ SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *p){ if( p->eStage==RBU_STAGE_OAL ){ assert( rc!=SQLITE_DONE ); if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbRbu, "COMMIT", 0, 0, 0); - if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbRbu, "BEGIN IMMEDIATE", 0, 0, 0); + if( rc==SQLITE_OK ){ + const char *zBegin = rbuIsVacuum(p) ? "BEGIN" : "BEGIN IMMEDIATE"; + rc = sqlite3_exec(p->dbRbu, zBegin, 0, 0, 0); + } if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbMain, "BEGIN IMMEDIATE", 0, 0,0); } @@ -180288,11 +217378,59 @@ SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *p){ return rc; } +/* +** Default xRename callback for RBU. +*/ +static int xDefaultRename(void *pArg, const char *zOld, const char *zNew){ + int rc = SQLITE_OK; +#if defined(_WIN32_WCE) + { + LPWSTR zWideOld; + LPWSTR zWideNew; + + zWideOld = rbuWinUtf8ToUnicode(zOld); + if( zWideOld ){ + zWideNew = rbuWinUtf8ToUnicode(zNew); + if( zWideNew ){ + if( MoveFileW(zWideOld, zWideNew) ){ + rc = SQLITE_OK; + }else{ + rc = SQLITE_IOERR; + } + sqlite3_free(zWideNew); + }else{ + rc = SQLITE_IOERR_NOMEM; + } + sqlite3_free(zWideOld); + }else{ + rc = SQLITE_IOERR_NOMEM; + } + } +#else + rc = rename(zOld, zNew) ? SQLITE_IOERR : SQLITE_OK; +#endif + return rc; +} + +SQLITE_API void sqlite3rbu_rename_handler( + sqlite3rbu *pRbu, + void *pArg, + int (*xRename)(void *pArg, const char *zOld, const char *zNew) +){ + if( xRename ){ + pRbu->xRename = xRename; + pRbu->pRenameArg = pArg; + }else{ + pRbu->xRename = xDefaultRename; + pRbu->pRenameArg = 0; + } +} + /************************************************************************** ** Beginning of RBU VFS shim methods. The VFS shim modifies the behaviour ** of a standard VFS in the following ways: ** -** 1. Whenever the first page of a main database file is read or +** 1. Whenever the first page of a main database file is read or ** written, the value of the change-counter cookie is stored in ** rbu_file.iCookie. Similarly, the value of the "write-version" ** database header field is stored in rbu_file.iWriteVer. This ensures @@ -180300,15 +217438,15 @@ SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *p){ ** ** 2. Whenever an SQLITE_OPEN_WAL file is opened, the (rbu_file.pWalFd) ** member variable of the associated database file descriptor is set -** to point to the new file. A mutex protected linked list of all main -** db fds opened using a particular RBU VFS is maintained at +** to point to the new file. A mutex protected linked list of all main +** db fds opened using a particular RBU VFS is maintained at ** rbu_vfs.pMain to facilitate this. ** -** 3. Using a new file-control "SQLITE_FCNTL_RBU", a main db rbu_file +** 3. Using a new file-control "SQLITE_FCNTL_RBU", a main db rbu_file ** object can be marked as the target database of an RBU update. This ** turns on the following extra special behaviour: ** -** 3a. If xAccess() is called to check if there exists a *-wal file +** 3a. If xAccess() is called to check if there exists a *-wal file ** associated with an RBU target database currently in RBU_STAGE_OAL ** stage (preparing the *-oal file), the following special handling ** applies: @@ -180321,30 +217459,30 @@ SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *p){ ** ** Then, when xOpen() is called to open the *-wal file associated with ** the RBU target in RBU_STAGE_OAL stage, instead of opening the *-wal -** file, the rbu vfs opens the corresponding *-oal file instead. +** file, the rbu vfs opens the corresponding *-oal file instead. ** ** 3b. The *-shm pages returned by xShmMap() for a target db file in ** RBU_STAGE_OAL mode are actually stored in heap memory. This is to ** avoid creating a *-shm file on disk. Additionally, xShmLock() calls ** are no-ops on target database files in RBU_STAGE_OAL mode. This is -** because assert() statements in some VFS implementations fail if +** because assert() statements in some VFS implementations fail if ** xShmLock() is called before xShmMap(). ** ** 3c. If an EXCLUSIVE lock is attempted on a target database file in any -** mode except RBU_STAGE_DONE (all work completed and checkpointed), it +** mode except RBU_STAGE_DONE (all work completed and checkpointed), it ** fails with an SQLITE_BUSY error. This is to stop RBU connections ** from automatically checkpointing a *-wal (or *-oal) file from within ** sqlite3_close(). ** ** 3d. In RBU_STAGE_CAPTURE mode, all xRead() calls on the wal file, and -** all xWrite() calls on the target database file perform no IO. +** all xWrite() calls on the target database file perform no IO. ** Instead the frame and page numbers that would be read and written ** are recorded. Additionally, successful attempts to obtain exclusive -** xShmLock() WRITER, CHECKPOINTER and READ0 locks on the target +** xShmLock() WRITER, CHECKPOINTER and READ0 locks on the target ** database file are recorded. xShmLock() calls to unlock the same ** locks are no-ops (so that once obtained, these locks are never ** relinquished). Finally, calls to xSync() on the target database -** file fail with SQLITE_INTERNAL errors. +** file fail with SQLITE_NOTICE errors. */ static void rbuUnlockShm(rbu_file *p){ @@ -180373,6 +217511,69 @@ static int rbuUpdateTempSize(rbu_file *pFd, sqlite3_int64 nNew){ return SQLITE_OK; } +/* +** Add an item to the main-db lists, if it is not already present. +** +** There are two main-db lists. One for all file descriptors, and one +** for all file descriptors with rbu_file.pDb!=0. If the argument has +** rbu_file.pDb!=0, then it is assumed to already be present on the +** main list and is only added to the pDb!=0 list. +*/ +static void rbuMainlistAdd(rbu_file *p){ + rbu_vfs *pRbuVfs = p->pRbuVfs; + rbu_file *pIter; + assert( (p->openFlags & SQLITE_OPEN_MAIN_DB) ); + sqlite3_mutex_enter(pRbuVfs->mutex); + if( p->pRbu==0 ){ + for(pIter=pRbuVfs->pMain; pIter; pIter=pIter->pMainNext); + p->pMainNext = pRbuVfs->pMain; + pRbuVfs->pMain = p; + }else{ + for(pIter=pRbuVfs->pMainRbu; pIter && pIter!=p; pIter=pIter->pMainRbuNext){} + if( pIter==0 ){ + p->pMainRbuNext = pRbuVfs->pMainRbu; + pRbuVfs->pMainRbu = p; + } + } + sqlite3_mutex_leave(pRbuVfs->mutex); +} + +/* +** Remove an item from the main-db lists. +*/ +static void rbuMainlistRemove(rbu_file *p){ + rbu_file **pp; + sqlite3_mutex_enter(p->pRbuVfs->mutex); + for(pp=&p->pRbuVfs->pMain; *pp && *pp!=p; pp=&((*pp)->pMainNext)){} + if( *pp ) *pp = p->pMainNext; + p->pMainNext = 0; + for(pp=&p->pRbuVfs->pMainRbu; *pp && *pp!=p; pp=&((*pp)->pMainRbuNext)){} + if( *pp ) *pp = p->pMainRbuNext; + p->pMainRbuNext = 0; + sqlite3_mutex_leave(p->pRbuVfs->mutex); +} + +/* +** Given that zWal points to a buffer containing a wal file name passed to +** either the xOpen() or xAccess() VFS method, search the main-db list for +** a file-handle opened by the same database connection on the corresponding +** database file. +** +** If parameter bRbu is true, only search for file-descriptors with +** rbu_file.pDb!=0. +*/ +static rbu_file *rbuFindMaindb(rbu_vfs *pRbuVfs, const char *zWal, int bRbu){ + rbu_file *pDb; + sqlite3_mutex_enter(pRbuVfs->mutex); + if( bRbu ){ + for(pDb=pRbuVfs->pMainRbu; pDb && pDb->zWal!=zWal; pDb=pDb->pMainRbuNext){} + }else{ + for(pDb=pRbuVfs->pMain; pDb && pDb->zWal!=zWal; pDb=pDb->pMainNext){} + } + sqlite3_mutex_leave(pRbuVfs->mutex); + return pDb; +} + /* ** Close an rbu file. */ @@ -180390,17 +217591,17 @@ static int rbuVfsClose(sqlite3_file *pFile){ sqlite3_free(p->zDel); if( p->openFlags & SQLITE_OPEN_MAIN_DB ){ - rbu_file **pp; - sqlite3_mutex_enter(p->pRbuVfs->mutex); - for(pp=&p->pRbuVfs->pMain; *pp!=p; pp=&((*pp)->pMainNext)); - *pp = p->pMainNext; - sqlite3_mutex_leave(p->pRbuVfs->mutex); + const sqlite3_io_methods *pMeth = p->pReal->pMethods; + rbuMainlistRemove(p); rbuUnlockShm(p); - p->pReal->pMethods->xShmUnmap(p->pReal, 0); + if( pMeth->iVersion>1 && pMeth->xShmUnmap ){ + pMeth->xShmUnmap(p->pReal, 0); + } } else if( (p->openFlags & SQLITE_OPEN_DELETEONCLOSE) && p->pRbu ){ rbuUpdateTempSize(p, 0); } + assert( p->pMainNext==0 && p->pRbuVfs->pMain!=p ); /* Close the underlying file handle */ rc = p->pReal->pMethods->xClose(p->pReal); @@ -180409,7 +217610,7 @@ static int rbuVfsClose(sqlite3_file *pFile){ /* -** Read and return an unsigned 32-bit big-endian integer from the buffer +** Read and return an unsigned 32-bit big-endian integer from the buffer ** passed as the only argument. */ static u32 rbuGetU32(u8 *aBuf){ @@ -180439,9 +217640,9 @@ static void rbuPutU16(u8 *aBuf, u16 iVal){ ** Read data from an rbuVfs-file. */ static int rbuVfsRead( - sqlite3_file *pFile, - void *zBuf, - int iAmt, + sqlite3_file *pFile, + void *zBuf, + int iAmt, sqlite_int64 iOfst ){ rbu_file *p = (rbu_file*)pFile; @@ -180452,20 +217653,20 @@ static int rbuVfsRead( assert( p->openFlags & SQLITE_OPEN_WAL ); rc = rbuCaptureWalRead(p->pRbu, iOfst, iAmt); }else{ - if( pRbu && pRbu->eStage==RBU_STAGE_OAL - && (p->openFlags & SQLITE_OPEN_WAL) - && iOfst>=pRbu->iOalSz + if( pRbu && pRbu->eStage==RBU_STAGE_OAL + && (p->openFlags & SQLITE_OPEN_WAL) + && iOfst>=pRbu->iOalSz ){ rc = SQLITE_OK; memset(zBuf, 0, iAmt); }else{ rc = p->pReal->pMethods->xRead(p->pReal, zBuf, iAmt, iOfst); #if 1 - /* If this is being called to read the first page of the target - ** database as part of an rbu vacuum operation, synthesize the + /* If this is being called to read the first page of the target + ** database as part of an rbu vacuum operation, synthesize the ** contents of the first page if it does not yet exist. Otherwise, ** SQLite will not check for a *-wal file. */ - if( pRbu && rbuIsVacuum(pRbu) + if( pRbu && rbuIsVacuum(pRbu) && rc==SQLITE_IOERR_SHORT_READ && iOfst==0 && (p->openFlags & SQLITE_OPEN_MAIN_DB) && pRbu->rc==SQLITE_OK @@ -180505,9 +217706,9 @@ static int rbuVfsRead( ** Write data to an rbuVfs-file. */ static int rbuVfsWrite( - sqlite3_file *pFile, - const void *zBuf, - int iAmt, + sqlite3_file *pFile, + const void *zBuf, + int iAmt, sqlite_int64 iOfst ){ rbu_file *p = (rbu_file*)pFile; @@ -180519,8 +217720,8 @@ static int rbuVfsWrite( rc = rbuCaptureDbWrite(p->pRbu, iOfst); }else{ if( pRbu ){ - if( pRbu->eStage==RBU_STAGE_OAL - && (p->openFlags & SQLITE_OPEN_WAL) + if( pRbu->eStage==RBU_STAGE_OAL + && (p->openFlags & SQLITE_OPEN_WAL) && iOfst>=pRbu->iOalSz ){ pRbu->iOalSz = iAmt + iOfst; @@ -180563,7 +217764,7 @@ static int rbuVfsSync(sqlite3_file *pFile, int flags){ rbu_file *p = (rbu_file *)pFile; if( p->pRbu && p->pRbu->eStage==RBU_STAGE_CAPTURE ){ if( p->openFlags & SQLITE_OPEN_MAIN_DB ){ - return SQLITE_INTERNAL; + return SQLITE_NOTICE_RBU; } return SQLITE_OK; } @@ -180580,10 +217781,10 @@ static int rbuVfsFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ /* If this is an RBU vacuum operation and this is the target database, ** pretend that it has at least one page. Otherwise, SQLite will not - ** check for the existance of a *-wal file. rbuVfsRead() contains + ** check for the existance of a *-wal file. rbuVfsRead() contains ** similar logic. */ - if( rc==SQLITE_OK && *pSize==0 - && p->pRbu && rbuIsVacuum(p->pRbu) + if( rc==SQLITE_OK && *pSize==0 + && p->pRbu && rbuIsVacuum(p->pRbu) && (p->openFlags & SQLITE_OPEN_MAIN_DB) ){ *pSize = 1024; @@ -180600,10 +217801,10 @@ static int rbuVfsLock(sqlite3_file *pFile, int eLock){ int rc = SQLITE_OK; assert( p->openFlags & (SQLITE_OPEN_MAIN_DB|SQLITE_OPEN_TEMP_DB) ); - if( eLock==SQLITE_LOCK_EXCLUSIVE + if( eLock==SQLITE_LOCK_EXCLUSIVE && (p->bNolock || (pRbu && pRbu->eStage!=RBU_STAGE_DONE)) ){ - /* Do not allow EXCLUSIVE locks. Preventing SQLite from taking this + /* Do not allow EXCLUSIVE locks. Preventing SQLite from taking this ** prevents it from checkpointing the database from sqlite3_close(). */ rc = SQLITE_BUSY; }else{ @@ -180659,6 +217860,7 @@ static int rbuVfsFileControl(sqlite3_file *pFile, int op, void *pArg){ }else if( rc==SQLITE_NOTFOUND ){ pRbu->pTargetFd = p; p->pRbu = pRbu; + rbuMainlistAdd(p); if( p->pWalFd ) p->pWalFd->pRbu = pRbu; rc = SQLITE_OK; } @@ -180713,25 +217915,24 @@ static int rbuVfsShmLock(sqlite3_file *pFile, int ofst, int n, int flags){ #endif assert( p->openFlags & (SQLITE_OPEN_MAIN_DB|SQLITE_OPEN_TEMP_DB) ); - if( pRbu && (pRbu->eStage==RBU_STAGE_OAL || pRbu->eStage==RBU_STAGE_MOVE) ){ - /* Magic number 1 is the WAL_CKPT_LOCK lock. Preventing SQLite from - ** taking this lock also prevents any checkpoints from occurring. - ** todo: really, it's not clear why this might occur, as - ** wal_autocheckpoint ought to be turned off. */ + if( pRbu && ( + pRbu->eStage==RBU_STAGE_OAL + || pRbu->eStage==RBU_STAGE_MOVE + || pRbu->eStage==RBU_STAGE_DONE + )){ + /* Prevent SQLite from taking a shm-lock on the target file when it + ** is supplying heap memory to the upper layer in place of *-shm + ** segments. */ if( ofst==WAL_LOCK_CKPT && n==1 ) rc = SQLITE_BUSY; }else{ int bCapture = 0; - if( n==1 && (flags & SQLITE_SHM_EXCLUSIVE) - && pRbu && pRbu->eStage==RBU_STAGE_CAPTURE - && (ofst==WAL_LOCK_WRITE || ofst==WAL_LOCK_CKPT || ofst==WAL_LOCK_READ0) - ){ + if( pRbu && pRbu->eStage==RBU_STAGE_CAPTURE ){ bCapture = 1; } - if( bCapture==0 || 0==(flags & SQLITE_SHM_UNLOCK) ){ rc = p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags); if( bCapture && rc==SQLITE_OK ){ - pRbu->mLock |= (1 << ofst); + pRbu->mLock |= ((1<pRbu ? p->pRbu->eStage : 0); /* If not in RBU_STAGE_OAL, allow this call to pass through. Or, if this - ** rbu is in the RBU_STAGE_OAL state, use heap memory for *-shm space + ** rbu is in the RBU_STAGE_OAL state, use heap memory for *-shm space ** instead of a file on disk. */ assert( p->openFlags & (SQLITE_OPEN_MAIN_DB|SQLITE_OPEN_TEMP_DB) ); - if( eStage==RBU_STAGE_OAL || eStage==RBU_STAGE_MOVE ){ - if( iRegion<=p->nShm ){ - int nByte = (iRegion+1) * sizeof(char*); - char **apNew = (char**)sqlite3_realloc64(p->apShm, nByte); - if( apNew==0 ){ - rc = SQLITE_NOMEM; - }else{ - memset(&apNew[p->nShm], 0, sizeof(char*) * (1 + iRegion - p->nShm)); - p->apShm = apNew; - p->nShm = iRegion+1; - } + if( eStage==RBU_STAGE_OAL ){ + sqlite3_int64 nByte = (iRegion+1) * sizeof(char*); + char **apNew = (char**)sqlite3_realloc64(p->apShm, nByte); + + /* This is an RBU connection that uses its own heap memory for the + ** pages of the *-shm file. Since no other process can have run + ** recovery, the connection must request *-shm pages in order + ** from start to finish. */ + assert( iRegion==p->nShm ); + if( apNew==0 ){ + rc = SQLITE_NOMEM; + }else{ + memset(&apNew[p->nShm], 0, sizeof(char*) * (1 + iRegion - p->nShm)); + p->apShm = apNew; + p->nShm = iRegion+1; } - if( rc==SQLITE_OK && p->apShm[iRegion]==0 ){ + if( rc==SQLITE_OK ){ char *pNew = (char*)sqlite3_malloc64(szRegion); if( pNew==0 ){ rc = SQLITE_NOMEM; @@ -180820,47 +218025,6 @@ static int rbuVfsShmUnmap(sqlite3_file *pFile, int delFlag){ return rc; } -/* -** Given that zWal points to a buffer containing a wal file name passed to -** either the xOpen() or xAccess() VFS method, return a pointer to the -** file-handle opened by the same database connection on the corresponding -** database file. -*/ -static rbu_file *rbuFindMaindb(rbu_vfs *pRbuVfs, const char *zWal){ - rbu_file *pDb; - sqlite3_mutex_enter(pRbuVfs->mutex); - for(pDb=pRbuVfs->pMain; pDb && pDb->zWal!=zWal; pDb=pDb->pMainNext){} - sqlite3_mutex_leave(pRbuVfs->mutex); - return pDb; -} - -/* -** A main database named zName has just been opened. The following -** function returns a pointer to a buffer owned by SQLite that contains -** the name of the *-wal file this db connection will use. SQLite -** happens to pass a pointer to this buffer when using xAccess() -** or xOpen() to operate on the *-wal file. -*/ -static const char *rbuMainToWal(const char *zName, int flags){ - int n = (int)strlen(zName); - const char *z = &zName[n]; - if( flags & SQLITE_OPEN_URI ){ - int odd = 0; - while( 1 ){ - if( z[0]==0 ){ - odd = 1 - odd; - if( odd && z[1]==0 ) break; - } - z++; - } - z += 2; - }else{ - while( *z==0 ) z++; - } - z += (n + 8 + 1); - return z; -} - /* ** Open an rbu file handle. */ @@ -180891,6 +218055,25 @@ static int rbuVfsOpen( rbuVfsShmUnmap, /* xShmUnmap */ 0, 0 /* xFetch, xUnfetch */ }; + static sqlite3_io_methods rbuvfs_io_methods1 = { + 1, /* iVersion */ + rbuVfsClose, /* xClose */ + rbuVfsRead, /* xRead */ + rbuVfsWrite, /* xWrite */ + rbuVfsTruncate, /* xTruncate */ + rbuVfsSync, /* xSync */ + rbuVfsFileSize, /* xFileSize */ + rbuVfsLock, /* xLock */ + rbuVfsUnlock, /* xUnlock */ + rbuVfsCheckReservedLock, /* xCheckReservedLock */ + rbuVfsFileControl, /* xFileControl */ + rbuVfsSectorSize, /* xSectorSize */ + rbuVfsDeviceCharacteristics, /* xDeviceCharacteristics */ + 0, 0, 0, 0, 0, 0 + }; + + + rbu_vfs *pRbuVfs = (rbu_vfs*)pVfs; sqlite3_vfs *pRealVfs = pRbuVfs->pRealVfs; rbu_file *pFd = (rbu_file *)pFile; @@ -180909,34 +218092,20 @@ static int rbuVfsOpen( ** the name of the *-wal file this db connection will use. SQLite ** happens to pass a pointer to this buffer when using xAccess() ** or xOpen() to operate on the *-wal file. */ - pFd->zWal = rbuMainToWal(zName, flags); + pFd->zWal = sqlite3_filename_wal(zName); } else if( flags & SQLITE_OPEN_WAL ){ - rbu_file *pDb = rbuFindMaindb(pRbuVfs, zName); + rbu_file *pDb = rbuFindMaindb(pRbuVfs, zName, 0); if( pDb ){ if( pDb->pRbu && pDb->pRbu->eStage==RBU_STAGE_OAL ){ - /* This call is to open a *-wal file. Intead, open the *-oal. This - ** code ensures that the string passed to xOpen() is terminated by a - ** pair of '\0' bytes in case the VFS attempts to extract a URI - ** parameter from it. */ - const char *zBase = zName; - size_t nCopy; - char *zCopy; + /* This call is to open a *-wal file. Intead, open the *-oal. */ + size_t nOpen; if( rbuIsVacuum(pDb->pRbu) ){ - zBase = sqlite3_db_filename(pDb->pRbu->dbRbu, "main"); - zBase = rbuMainToWal(zBase, SQLITE_OPEN_URI); - } - nCopy = strlen(zBase); - zCopy = sqlite3_malloc64(nCopy+2); - if( zCopy ){ - memcpy(zCopy, zBase, nCopy); - zCopy[nCopy-3] = 'o'; - zCopy[nCopy] = '\0'; - zCopy[nCopy+1] = '\0'; - zOpen = (const char*)(pFd->zDel = zCopy); - }else{ - rc = SQLITE_NOMEM; + zOpen = sqlite3_db_filename(pDb->pRbu->dbRbu, "main"); + zOpen = sqlite3_filename_wal(zOpen); } + nOpen = strlen(zOpen); + ((char*)zOpen)[nOpen-3] = 'o'; pFd->pRbu = pDb->pRbu; } pDb->pWalFd = pFd; @@ -180946,8 +218115,8 @@ static int rbuVfsOpen( pFd->pRbu = pRbuVfs->pRbu; } - if( oflags & SQLITE_OPEN_MAIN_DB - && sqlite3_uri_boolean(zName, "rbu_memory", 0) + if( oflags & SQLITE_OPEN_MAIN_DB + && sqlite3_uri_boolean(zName, "rbu_memory", 0) ){ assert( oflags & SQLITE_OPEN_MAIN_DB ); oflags = SQLITE_OPEN_TEMP_DB | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | @@ -180959,15 +218128,17 @@ static int rbuVfsOpen( rc = pRealVfs->xOpen(pRealVfs, zOpen, pFd->pReal, oflags, pOutFlags); } if( pFd->pReal->pMethods ){ + const sqlite3_io_methods *pMeth = pFd->pReal->pMethods; /* The xOpen() operation has succeeded. Set the sqlite3_file.pMethods ** pointer and, if the file is a main database file, link it into the ** mutex protected linked list of all such files. */ - pFile->pMethods = &rbuvfs_io_methods; + if( pMeth->iVersion<2 || pMeth->xShmLock==0 ){ + pFile->pMethods = &rbuvfs_io_methods1; + }else{ + pFile->pMethods = &rbuvfs_io_methods; + } if( flags & SQLITE_OPEN_MAIN_DB ){ - sqlite3_mutex_enter(pRbuVfs->mutex); - pFd->pMainNext = pRbuVfs->pMain; - pRbuVfs->pMain = pFd; - sqlite3_mutex_leave(pRbuVfs->mutex); + rbuMainlistAdd(pFd); } }else{ sqlite3_free(pFd->zDel); @@ -180989,9 +218160,9 @@ static int rbuVfsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ ** is available, or false otherwise. */ static int rbuVfsAccess( - sqlite3_vfs *pVfs, - const char *zPath, - int flags, + sqlite3_vfs *pVfs, + const char *zPath, + int flags, int *pResOut ){ rbu_vfs *pRbuVfs = (rbu_vfs*)pVfs; @@ -181007,7 +218178,7 @@ static int rbuVfsAccess( ** a) if the *-wal file does exist, return SQLITE_CANTOPEN. This ** ensures that the RBU extension never tries to update a database ** in wal mode, even if the first page of the database file has - ** been damaged. + ** been damaged. ** ** b) if the *-wal file does not exist, claim that it does anyway, ** causing SQLite to call xOpen() to open it. This call will also @@ -181015,8 +218186,9 @@ static int rbuVfsAccess( ** file opened instead. */ if( rc==SQLITE_OK && flags==SQLITE_ACCESS_EXISTS ){ - rbu_file *pDb = rbuFindMaindb(pRbuVfs, zPath); - if( pDb && pDb->pRbu && pDb->pRbu->eStage==RBU_STAGE_OAL ){ + rbu_file *pDb = rbuFindMaindb(pRbuVfs, zPath, 1); + if( pDb && pDb->pRbu->eStage==RBU_STAGE_OAL ){ + assert( pDb->pRbu ); if( *pResOut ){ rc = SQLITE_CANTOPEN; }else{ @@ -181036,9 +218208,9 @@ static int rbuVfsAccess( ** of at least (DEVSYM_MAX_PATHNAME+1) bytes. */ static int rbuVfsFullPathname( - sqlite3_vfs *pVfs, - const char *zPath, - int nOut, + sqlite3_vfs *pVfs, + const char *zPath, + int nOut, char *zOut ){ sqlite3_vfs *pRealVfs = ((rbu_vfs*)pVfs)->pRealVfs; @@ -181056,7 +218228,7 @@ static void *rbuVfsDlOpen(sqlite3_vfs *pVfs, const char *zPath){ /* ** Populate the buffer zErrMsg (size nByte bytes) with a human readable -** utf-8 string describing the most recent error encountered associated +** utf-8 string describing the most recent error encountered associated ** with dynamic libraries. */ static void rbuVfsDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ @@ -181068,8 +218240,8 @@ static void rbuVfsDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ ** Return a pointer to the symbol zSymbol in the dynamic library pHandle. */ static void (*rbuVfsDlSym( - sqlite3_vfs *pVfs, - void *pArg, + sqlite3_vfs *pVfs, + void *pArg, const char *zSym ))(void){ sqlite3_vfs *pRealVfs = ((rbu_vfs*)pVfs)->pRealVfs; @@ -181086,7 +218258,7 @@ static void rbuVfsDlClose(sqlite3_vfs *pVfs, void *pHandle){ #endif /* SQLITE_OMIT_LOAD_EXTENSION */ /* -** Populate the buffer pointed to by zBufOut with nByte bytes of +** Populate the buffer pointed to by zBufOut with nByte bytes of ** random data. */ static int rbuVfsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ @@ -181095,7 +218267,7 @@ static int rbuVfsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ } /* -** Sleep for nMicro microseconds. Return the number of microseconds +** Sleep for nMicro microseconds. Return the number of microseconds ** actually slept. */ static int rbuVfsSleep(sqlite3_vfs *pVfs, int nMicro){ @@ -181246,7 +218418,7 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu *pRbu){ ** ** This file contains an implementation of the "dbstat" virtual table. ** -** The dbstat virtual table is used to extract low-level formatting +** The dbstat virtual table is used to extract low-level storage ** information from an SQLite database in order to implement the ** "sqlite3_analyzer" utility. See the ../tool/spaceanal.tcl script ** for an example implementation. @@ -181259,24 +218431,33 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu *pRbu){ #if (defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST)) \ && !defined(SQLITE_OMIT_VIRTUALTABLE) +/* +** The pager and btree modules arrange objects in memory so that there are +** always approximately 200 bytes of addressable memory following each page +** buffer. This way small buffer overreads caused by corrupt database pages +** do not cause undefined behaviour. This module pads each page buffer +** by the following number of bytes for the same purpose. +*/ +#define DBSTAT_PAGE_PADDING_BYTES 256 + /* ** Page paths: -** -** The value of the 'path' column describes the path taken from the -** root-node of the b-tree structure to each page. The value of the +** +** The value of the 'path' column describes the path taken from the +** root-node of the b-tree structure to each page. The value of the ** root-node path is '/'. ** ** The value of the path for the left-most child page of the root of ** a b-tree is '/000/'. (Btrees store content ordered from left to right ** so the pages to the left have smaller keys than the pages to the right.) ** The next to left-most child of the root page is -** '/001', and so on, each sibling page identified by a 3-digit hex +** '/001', and so on, each sibling page identified by a 3-digit hex ** value. The children of the 451st left-most sibling have paths such ** as '/1c2/000/, '/1c2/001/' etc. ** -** Overflow pages are specified by appending a '+' character and a +** Overflow pages are specified by appending a '+' character and a ** six-digit hexadecimal value to the path to the cell they are linked -** from. For example, the three overflow pages in a chain linked from +** from. For example, the three overflow pages in a chain linked from ** the left-most cell of the 450th child of the root page are identified ** by the paths: ** @@ -181290,27 +218471,30 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu *pRbu){ ** ** '/1c2/000/' // Left-most child of 451st child of root */ -#define VTAB_SCHEMA \ - "CREATE TABLE xx( " \ - " name TEXT, /* Name of table or index */" \ - " path TEXT, /* Path to page from root */" \ - " pageno INTEGER, /* Page number */" \ - " pagetype TEXT, /* 'internal', 'leaf' or 'overflow' */" \ - " ncell INTEGER, /* Cells on page (0 for overflow) */" \ - " payload INTEGER, /* Bytes of payload on this page */" \ - " unused INTEGER, /* Bytes of unused space on this page */" \ - " mx_payload INTEGER, /* Largest payload size of all cells */" \ - " pgoffset INTEGER, /* Offset of page in file */" \ - " pgsize INTEGER, /* Size of the page */" \ - " schema TEXT HIDDEN /* Database schema being analyzed */" \ - ");" - +static const char zDbstatSchema[] = + "CREATE TABLE x(" + " name TEXT," /* 0 Name of table or index */ + " path TEXT," /* 1 Path to page from root (NULL for agg) */ + " pageno INTEGER," /* 2 Page number (page count for aggregates) */ + " pagetype TEXT," /* 3 'internal', 'leaf', 'overflow', or NULL */ + " ncell INTEGER," /* 4 Cells on page (0 for overflow) */ + " payload INTEGER," /* 5 Bytes of payload on this page */ + " unused INTEGER," /* 6 Bytes of unused space on this page */ + " mx_payload INTEGER," /* 7 Largest payload size of all cells */ + " pgoffset INTEGER," /* 8 Offset of page in file (NULL for agg) */ + " pgsize INTEGER," /* 9 Size of the page (sum for aggregate) */ + " schema TEXT HIDDEN," /* 10 Database schema being analyzed */ + " aggregate BOOLEAN HIDDEN" /* 11 aggregate info for each table */ + ")" +; +/* Forward reference to data structured used in this module */ typedef struct StatTable StatTable; typedef struct StatCursor StatCursor; typedef struct StatPage StatPage; typedef struct StatCell StatCell; +/* Size information for a single cell within a btree page */ struct StatCell { int nLocal; /* Bytes of local payload */ u32 iChildPg; /* Child node (or 0 if this is a leaf) */ @@ -181320,11 +218504,11 @@ struct StatCell { int iOvfl; /* Iterates through aOvfl[] */ }; +/* Size information for a single btree page */ struct StatPage { - u32 iPgno; - DbPage *pPg; - int iCell; - + u32 iPgno; /* Page number */ + u8 *aPg; /* Page buffer from sqlite3_malloc() */ + int iCell; /* Current cell */ char *zPath; /* Path to this page */ /* Variables populated by statDecodePage(): */ @@ -181333,34 +218517,38 @@ struct StatPage { int nUnused; /* Number of unused bytes on page */ StatCell *aCell; /* Array of parsed cells */ u32 iRightChildPg; /* Right-child page number (or 0) */ - int nMxPayload; /* Largest payload of any cell on this page */ + int nMxPayload; /* Largest payload of any cell on the page */ }; +/* The cursor for scanning the dbstat virtual table */ struct StatCursor { - sqlite3_vtab_cursor base; + sqlite3_vtab_cursor base; /* base class. MUST BE FIRST! */ sqlite3_stmt *pStmt; /* Iterates through set of root pages */ - int isEof; /* After pStmt has returned SQLITE_DONE */ + u8 isEof; /* After pStmt has returned SQLITE_DONE */ + u8 isAgg; /* Aggregate results for each table */ int iDb; /* Schema used for this query */ - StatPage aPage[32]; + StatPage aPage[32]; /* Pages in path to current page */ int iPage; /* Current entry in aPage[] */ /* Values to return. */ + u32 iPageno; /* Value of 'pageno' column */ char *zName; /* Value of 'name' column */ char *zPath; /* Value of 'path' column */ - u32 iPageno; /* Value of 'pageno' column */ char *zPagetype; /* Value of 'pagetype' column */ + int nPage; /* Number of pages in current btree */ int nCell; /* Value of 'ncell' column */ - int nPayload; /* Value of 'payload' column */ - int nUnused; /* Value of 'unused' column */ int nMxPayload; /* Value of 'mx_payload' column */ + i64 nUnused; /* Value of 'unused' column */ + i64 nPayload; /* Value of 'payload' column */ i64 iOffset; /* Value of 'pgOffset' column */ - int szPage; /* Value of 'pgSize' column */ + i64 szPage; /* Value of 'pgSize' column */ }; +/* An instance of the DBSTAT virtual table */ struct StatTable { - sqlite3_vtab base; - sqlite3 *db; + sqlite3_vtab base; /* base class. MUST BE FIRST! */ + sqlite3 *db; /* Database connection that owns this vtab */ int iDb; /* Index of database to analyze */ }; @@ -181369,7 +218557,7 @@ struct StatTable { #endif /* -** Connect to or create a statvfs virtual table. +** Connect to or create a new DBSTAT virtual table. */ static int statConnect( sqlite3 *db, @@ -181381,6 +218569,7 @@ static int statConnect( StatTable *pTab = 0; int rc = SQLITE_OK; int iDb; + (void)pAux; if( argc>=4 ){ Token nm; @@ -181393,7 +218582,8 @@ static int statConnect( }else{ iDb = 0; } - rc = sqlite3_declare_vtab(db, VTAB_SCHEMA); + sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY); + rc = sqlite3_declare_vtab(db, zDbstatSchema); if( rc==SQLITE_OK ){ pTab = (StatTable *)sqlite3_malloc64(sizeof(StatTable)); if( pTab==0 ) rc = SQLITE_NOMEM_BKPT; @@ -181411,7 +218601,7 @@ static int statConnect( } /* -** Disconnect from or destroy a statvfs virtual table. +** Disconnect from or destroy the DBSTAT virtual table. */ static int statDisconnect(sqlite3_vtab *pVtab){ sqlite3_free(pVtab); @@ -181419,16 +218609,21 @@ static int statDisconnect(sqlite3_vtab *pVtab){ } /* -** There is no "best-index". This virtual table always does a linear -** scan. However, a schema=? constraint should cause this table to -** operate on a different database schema, so check for it. +** Compute the best query strategy and return the result in idxNum. ** -** idxNum is normally 0, but will be 1 if a schema=? constraint exists. +** idxNum-Bit Meaning +** ---------- ---------------------------------------------- +** 0x01 There is a schema=? term in the WHERE clause +** 0x02 There is a name=? term in the WHERE clause +** 0x04 There is an aggregate=? term in the WHERE clause +** 0x08 Output should be ordered by name and path */ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ int i; - - pIdxInfo->estimatedCost = 1.0e6; /* Initial cost estimate */ + int iSchema = -1; + int iName = -1; + int iAgg = -1; + (void)tab; /* Look for a valid schema=? constraint. If found, change the idxNum to ** 1 and request the value of that constraint be sent to xFilter. And @@ -181436,19 +218631,44 @@ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ ** used. */ for(i=0; inConstraint; i++){ - if( pIdxInfo->aConstraint[i].usable==0 ) continue; if( pIdxInfo->aConstraint[i].op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; - if( pIdxInfo->aConstraint[i].iColumn!=10 ) continue; - pIdxInfo->idxNum = 1; - pIdxInfo->estimatedCost = 1.0; - pIdxInfo->aConstraintUsage[i].argvIndex = 1; - pIdxInfo->aConstraintUsage[i].omit = 1; - break; + if( pIdxInfo->aConstraint[i].usable==0 ){ + /* Force DBSTAT table should always be the right-most table in a join */ + return SQLITE_CONSTRAINT; + } + switch( pIdxInfo->aConstraint[i].iColumn ){ + case 0: { /* name */ + iName = i; + break; + } + case 10: { /* schema */ + iSchema = i; + break; + } + case 11: { /* aggregate */ + iAgg = i; + break; + } + } } + i = 0; + if( iSchema>=0 ){ + pIdxInfo->aConstraintUsage[iSchema].argvIndex = ++i; + pIdxInfo->aConstraintUsage[iSchema].omit = 1; + pIdxInfo->idxNum |= 0x01; + } + if( iName>=0 ){ + pIdxInfo->aConstraintUsage[iName].argvIndex = ++i; + pIdxInfo->idxNum |= 0x02; + } + if( iAgg>=0 ){ + pIdxInfo->aConstraintUsage[iAgg].argvIndex = ++i; + pIdxInfo->idxNum |= 0x04; + } + pIdxInfo->estimatedCost = 1.0; - - /* Records are always returned in ascending order of (name, path). - ** If this will satisfy the client, set the orderByConsumed flag so that + /* Records are always returned in ascending order of (name, path). + ** If this will satisfy the client, set the orderByConsumed flag so that ** SQLite does not do an external sort. */ if( ( pIdxInfo->nOrderBy==1 @@ -181463,13 +218683,14 @@ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ ) ){ pIdxInfo->orderByConsumed = 1; + pIdxInfo->idxNum |= 0x08; } return SQLITE_OK; } /* -** Open a new statvfs cursor. +** Open a new DBSTAT cursor. */ static int statOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ StatTable *pTab = (StatTable *)pVTab; @@ -181488,7 +218709,7 @@ static int statOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ return SQLITE_OK; } -static void statClearPage(StatPage *p){ +static void statClearCells(StatPage *p){ int i; if( p->aCell ){ for(i=0; inCell; i++){ @@ -181496,25 +218717,48 @@ static void statClearPage(StatPage *p){ } sqlite3_free(p->aCell); } - sqlite3PagerUnref(p->pPg); + p->nCell = 0; + p->aCell = 0; +} + +static void statClearPage(StatPage *p){ + u8 *aPg = p->aPg; + statClearCells(p); sqlite3_free(p->zPath); memset(p, 0, sizeof(StatPage)); + p->aPg = aPg; } static void statResetCsr(StatCursor *pCsr){ int i; - sqlite3_reset(pCsr->pStmt); + /* In some circumstances, specifically if an OOM has occurred, the call + ** to sqlite3_reset() may cause the pager to be reset (emptied). It is + ** important that statClearPage() is called to free any page refs before + ** this happens. dbsqlfuzz 9ed3e4e3816219d3509d711636c38542bf3f40b1. */ for(i=0; iaPage); i++){ statClearPage(&pCsr->aPage[i]); + sqlite3_free(pCsr->aPage[i].aPg); + pCsr->aPage[i].aPg = 0; } + sqlite3_reset(pCsr->pStmt); pCsr->iPage = 0; sqlite3_free(pCsr->zPath); pCsr->zPath = 0; pCsr->isEof = 0; } +/* Resize the space-used counters inside of the cursor */ +static void statResetCounts(StatCursor *pCsr){ + pCsr->nCell = 0; + pCsr->nMxPayload = 0; + pCsr->nUnused = 0; + pCsr->nPayload = 0; + pCsr->szPage = 0; + pCsr->nPage = 0; +} + /* -** Close a statvfs cursor. +** Close a DBSTAT cursor. */ static int statClose(sqlite3_vtab_cursor *pCursor){ StatCursor *pCsr = (StatCursor *)pCursor; @@ -181524,16 +218768,20 @@ static int statClose(sqlite3_vtab_cursor *pCursor){ return SQLITE_OK; } -static void getLocalPayload( +/* +** For a single cell on a btree page, compute the number of bytes of +** content (payload) stored on that page. That is to say, compute the +** number of bytes of content not found on overflow pages. +*/ +static int getLocalPayload( int nUsable, /* Usable bytes per page */ u8 flags, /* Page flags */ - int nTotal, /* Total record (payload) size */ - int *pnLocal /* OUT: Bytes stored locally */ + int nTotal /* Total record (payload) size */ ){ int nLocal; int nMinLocal; int nMaxLocal; - + if( flags==0x0D ){ /* Table leaf node */ nMinLocal = (nUsable - 12) * 32 / 255 - 23; nMaxLocal = nUsable - 35; @@ -181544,9 +218792,12 @@ static void getLocalPayload( nLocal = nMinLocal + (nTotal - nMinLocal) % (nUsable - 4); if( nLocal>nMaxLocal ) nLocal = nMinLocal; - *pnLocal = nLocal; + return nLocal; } +/* Populate the StatPage object with information about the all +** cells found on the page currently under analysis. +*/ static int statDecodePage(Btree *pBt, StatPage *p){ int nUnused; int iOff; @@ -181554,26 +218805,37 @@ static int statDecodePage(Btree *pBt, StatPage *p){ int isLeaf; int szPage; - u8 *aData = sqlite3PagerGetData(p->pPg); + u8 *aData = p->aPg; u8 *aHdr = &aData[p->iPgno==1 ? 100 : 0]; p->flags = aHdr[0]; + if( p->flags==0x0A || p->flags==0x0D ){ + isLeaf = 1; + nHdr = 8; + }else if( p->flags==0x05 || p->flags==0x02 ){ + isLeaf = 0; + nHdr = 12; + }else{ + goto statPageIsCorrupt; + } + if( p->iPgno==1 ) nHdr += 100; p->nCell = get2byte(&aHdr[3]); p->nMxPayload = 0; - - isLeaf = (p->flags==0x0A || p->flags==0x0D); - nHdr = 12 - isLeaf*4 + (p->iPgno==1)*100; + szPage = sqlite3BtreeGetPageSize(pBt); nUnused = get2byte(&aHdr[5]) - nHdr - 2*p->nCell; nUnused += (int)aHdr[7]; iOff = get2byte(&aHdr[1]); while( iOff ){ + int iNext; + if( iOff>=szPage ) goto statPageIsCorrupt; nUnused += get2byte(&aData[iOff+2]); - iOff = get2byte(&aData[iOff]); + iNext = get2byte(&aData[iOff]); + if( iNext0 ) goto statPageIsCorrupt; + iOff = iNext; } p->nUnused = nUnused; p->iRightChildPg = isLeaf ? 0 : sqlite3Get4byte(&aHdr[8]); - szPage = sqlite3BtreeGetPageSize(pBt); if( p->nCell ){ int i; /* Used to iterate through cells */ @@ -181590,6 +218852,7 @@ static int statDecodePage(Btree *pBt, StatPage *p){ StatCell *pCell = &p->aCell[i]; iOff = get2byte(&aData[nHdr+i*2]); + if( iOff=szPage ) goto statPageIsCorrupt; if( !isLeaf ){ pCell->iChildPg = sqlite3Get4byte(&aData[iOff]); iOff += 4; @@ -181605,14 +218868,17 @@ static int statDecodePage(Btree *pBt, StatPage *p){ iOff += sqlite3GetVarint(&aData[iOff], &dummy); } if( nPayload>(u32)p->nMxPayload ) p->nMxPayload = nPayload; - getLocalPayload(nUsable, p->flags, nPayload, &nLocal); + nLocal = getLocalPayload(nUsable, p->flags, nPayload); + if( nLocal<0 ) goto statPageIsCorrupt; pCell->nLocal = nLocal; - assert( nLocal>=0 ); assert( nPayload>=(u32)nLocal ); assert( nLocal<=(nUsable-35) ); if( nPayload>(u32)nLocal ){ int j; int nOvfl = ((nPayload - nLocal) + nUsable-4 - 1) / (nUsable - 4); + if( iOff+nLocal+4>nUsable || nPayload>0x7fffffff ){ + goto statPageIsCorrupt; + } pCell->nLastOvfl = (nPayload-nLocal) - (nOvfl-1) * (nUsable-4); pCell->nOvfl = nOvfl; pCell->aOvfl = sqlite3_malloc64(sizeof(u32)*nOvfl); @@ -181626,7 +218892,7 @@ static int statDecodePage(Btree *pBt, StatPage *p){ if( rc!=SQLITE_OK ){ assert( pPg==0 ); return rc; - } + } pCell->aOvfl[j] = sqlite3Get4byte(sqlite3PagerGetData(pPg)); sqlite3PagerUnref(pPg); } @@ -181636,6 +218902,11 @@ static int statDecodePage(Btree *pBt, StatPage *p){ } return SQLITE_OK; + +statPageIsCorrupt: + p->flags = 0; + statClearCells(p); + return SQLITE_OK; } /* @@ -181649,23 +218920,57 @@ static void statSizeAndOffset(StatCursor *pCsr){ sqlite3_file *fd; sqlite3_int64 x[2]; - /* The default page size and offset */ - pCsr->szPage = sqlite3BtreeGetPageSize(pBt); - pCsr->iOffset = (i64)pCsr->szPage * (pCsr->iPageno - 1); - - /* If connected to a ZIPVFS backend, override the page size and - ** offset with actual values obtained from ZIPVFS. + /* If connected to a ZIPVFS backend, find the page size and + ** offset from ZIPVFS. */ fd = sqlite3PagerFile(pPager); x[0] = pCsr->iPageno; if( sqlite3OsFileControl(fd, 230440, &x)==SQLITE_OK ){ pCsr->iOffset = x[0]; - pCsr->szPage = (int)x[1]; + pCsr->szPage += x[1]; + }else{ + /* Not ZIPVFS: The default page size and offset */ + pCsr->szPage += sqlite3BtreeGetPageSize(pBt); + pCsr->iOffset = (i64)pCsr->szPage * (pCsr->iPageno - 1); } } /* -** Move a statvfs cursor to the next entry in the file. +** Load a copy of the page data for page iPg into the buffer belonging +** to page object pPg. Allocate the buffer if necessary. Return SQLITE_OK +** if successful, or an SQLite error code otherwise. +*/ +static int statGetPage( + Btree *pBt, /* Load page from this b-tree */ + u32 iPg, /* Page number to load */ + StatPage *pPg /* Load page into this object */ +){ + int pgsz = sqlite3BtreeGetPageSize(pBt); + DbPage *pDbPage = 0; + int rc; + + if( pPg->aPg==0 ){ + pPg->aPg = (u8*)sqlite3_malloc(pgsz + DBSTAT_PAGE_PADDING_BYTES); + if( pPg->aPg==0 ){ + return SQLITE_NOMEM_BKPT; + } + memset(&pPg->aPg[pgsz], 0, DBSTAT_PAGE_PADDING_BYTES); + } + + rc = sqlite3PagerGet(sqlite3BtreePager(pBt), iPg, &pDbPage, 0); + if( rc==SQLITE_OK ){ + const u8 *a = sqlite3PagerGetData(pDbPage); + memcpy(pPg->aPg, a, pgsz); + sqlite3PagerUnref(pDbPage); + } + + return rc; +} + +/* +** Move a DBSTAT cursor to the next entry. Normally, the next +** entry will be the next page, but in aggregated mode (pCsr->isAgg!=0), +** the next entry is the next btree. */ static int statNext(sqlite3_vtab_cursor *pCursor){ int rc; @@ -181680,7 +218985,9 @@ static int statNext(sqlite3_vtab_cursor *pCursor){ pCsr->zPath = 0; statNextRestart: - if( pCsr->aPage[0].pPg==0 ){ + if( pCsr->iPage<0 ){ + /* Start measuring space on the next btree */ + statResetCounts(pCsr); rc = sqlite3_step(pCsr->pStmt); if( rc==SQLITE_ROW ){ int nPage; @@ -181690,47 +218997,50 @@ statNextRestart: pCsr->isEof = 1; return sqlite3_reset(pCsr->pStmt); } - rc = sqlite3PagerGet(pPager, iRoot, &pCsr->aPage[0].pPg, 0); + rc = statGetPage(pBt, iRoot, &pCsr->aPage[0]); pCsr->aPage[0].iPgno = iRoot; pCsr->aPage[0].iCell = 0; - pCsr->aPage[0].zPath = z = sqlite3_mprintf("/"); + if( !pCsr->isAgg ){ + pCsr->aPage[0].zPath = z = sqlite3_mprintf("/"); + if( z==0 ) rc = SQLITE_NOMEM_BKPT; + } pCsr->iPage = 0; - if( z==0 ) rc = SQLITE_NOMEM_BKPT; + pCsr->nPage = 1; }else{ pCsr->isEof = 1; return sqlite3_reset(pCsr->pStmt); } }else{ - - /* Page p itself has already been visited. */ + /* Continue analyzing the btree previously started */ StatPage *p = &pCsr->aPage[pCsr->iPage]; - + if( !pCsr->isAgg ) statResetCounts(pCsr); while( p->iCellnCell ){ StatCell *pCell = &p->aCell[p->iCell]; - if( pCell->iOvflnOvfl ){ - int nUsable; + while( pCell->iOvflnOvfl ){ + int nUsable, iOvfl; sqlite3BtreeEnter(pBt); - nUsable = sqlite3BtreeGetPageSize(pBt) - + nUsable = sqlite3BtreeGetPageSize(pBt) - sqlite3BtreeGetReserveNoMutex(pBt); sqlite3BtreeLeave(pBt); - pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0); - pCsr->iPageno = pCell->aOvfl[pCell->iOvfl]; - pCsr->zPagetype = "overflow"; - pCsr->nCell = 0; - pCsr->nMxPayload = 0; - pCsr->zPath = z = sqlite3_mprintf( - "%s%.3x+%.6x", p->zPath, p->iCell, pCell->iOvfl - ); - if( pCell->iOvflnOvfl-1 ){ - pCsr->nUnused = 0; - pCsr->nPayload = nUsable - 4; - }else{ - pCsr->nPayload = pCell->nLastOvfl; - pCsr->nUnused = nUsable - 4 - pCsr->nPayload; - } - pCell->iOvfl++; + pCsr->nPage++; statSizeAndOffset(pCsr); - return z==0 ? SQLITE_NOMEM_BKPT : SQLITE_OK; + if( pCell->iOvflnOvfl-1 ){ + pCsr->nPayload += nUsable - 4; + }else{ + pCsr->nPayload += pCell->nLastOvfl; + pCsr->nUnused += nUsable - 4 - pCell->nLastOvfl; + } + iOvfl = pCell->iOvfl; + pCell->iOvfl++; + if( !pCsr->isAgg ){ + pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0); + pCsr->iPageno = pCell->aOvfl[iOvfl]; + pCsr->zPagetype = "overflow"; + pCsr->zPath = z = sqlite3_mprintf( + "%s%.3x+%.6x", p->zPath, p->iCell, iOvfl + ); + return z==0 ? SQLITE_NOMEM_BKPT : SQLITE_OK; + } } if( p->iRightChildPg ) break; p->iCell++; @@ -181738,11 +219048,19 @@ statNextRestart: if( !p->iRightChildPg || p->iCell>p->nCell ){ statClearPage(p); - if( pCsr->iPage==0 ) return statNext(pCursor); pCsr->iPage--; + if( pCsr->isAgg && pCsr->iPage<0 ){ + /* label-statNext-done: When computing aggregate space usage over + ** an entire btree, this is the exit point from this function */ + return SQLITE_OK; + } goto statNextRestart; /* Tail recursion */ } pCsr->iPage++; + if( pCsr->iPage>=ArraySize(pCsr->aPage) ){ + statResetCsr(pCsr); + return SQLITE_CORRUPT_BKPT; + } assert( p==&pCsr->aPage[pCsr->iPage-1] ); if( p->iCell==p->nCell ){ @@ -181750,11 +219068,14 @@ statNextRestart: }else{ p[1].iPgno = p->aCell[p->iCell].iChildPg; } - rc = sqlite3PagerGet(pPager, p[1].iPgno, &p[1].pPg, 0); + rc = statGetPage(pBt, p[1].iPgno, &p[1]); + pCsr->nPage++; p[1].iCell = 0; - p[1].zPath = z = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell); + if( !pCsr->isAgg ){ + p[1].zPath = z = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell); + if( z==0 ) rc = SQLITE_NOMEM_BKPT; + } p->iCell++; - if( z==0 ) rc = SQLITE_NOMEM_BKPT; } @@ -181784,16 +219105,23 @@ statNextRestart: pCsr->zPagetype = "corrupted"; break; } - pCsr->nCell = p->nCell; - pCsr->nUnused = p->nUnused; - pCsr->nMxPayload = p->nMxPayload; - pCsr->zPath = z = sqlite3_mprintf("%s", p->zPath); - if( z==0 ) rc = SQLITE_NOMEM_BKPT; + pCsr->nCell += p->nCell; + pCsr->nUnused += p->nUnused; + if( p->nMxPayload>pCsr->nMxPayload ) pCsr->nMxPayload = p->nMxPayload; + if( !pCsr->isAgg ){ + pCsr->zPath = z = sqlite3_mprintf("%s", p->zPath); + if( z==0 ) rc = SQLITE_NOMEM_BKPT; + } nPayload = 0; for(i=0; inCell; i++){ nPayload += p->aCell[i].nLocal; } - pCsr->nPayload = nPayload; + pCsr->nPayload += nPayload; + + /* If computing aggregate space usage by btree, continue with the + ** next page. The loop will exit via the return at label-statNext-done + */ + if( pCsr->isAgg ) goto statNextRestart; } } @@ -181805,38 +219133,65 @@ static int statEof(sqlite3_vtab_cursor *pCursor){ return pCsr->isEof; } +/* Initialize a cursor according to the query plan idxNum using the +** arguments in argv[0]. See statBestIndex() for a description of the +** meaning of the bits in idxNum. +*/ static int statFilter( - sqlite3_vtab_cursor *pCursor, + sqlite3_vtab_cursor *pCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv ){ StatCursor *pCsr = (StatCursor *)pCursor; StatTable *pTab = (StatTable*)(pCursor->pVtab); - char *zSql; - int rc = SQLITE_OK; - char *zMaster; + sqlite3_str *pSql; /* Query of btrees to analyze */ + char *zSql; /* String value of pSql */ + int iArg = 0; /* Count of argv[] parameters used so far */ + int rc = SQLITE_OK; /* Result of this operation */ + const char *zName = 0; /* Only provide analysis of this table */ + (void)argc; + (void)idxStr; - if( idxNum==1 ){ - const char *zDbase = (const char*)sqlite3_value_text(argv[0]); + statResetCsr(pCsr); + sqlite3_finalize(pCsr->pStmt); + pCsr->pStmt = 0; + if( idxNum & 0x01 ){ + /* schema=? constraint is present. Get its value */ + const char *zDbase = (const char*)sqlite3_value_text(argv[iArg++]); pCsr->iDb = sqlite3FindDbName(pTab->db, zDbase); if( pCsr->iDb<0 ){ - sqlite3_free(pCursor->pVtab->zErrMsg); - pCursor->pVtab->zErrMsg = sqlite3_mprintf("no such schema: %s", zDbase); - return pCursor->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM_BKPT; + pCsr->iDb = 0; + pCsr->isEof = 1; + return SQLITE_OK; } }else{ pCsr->iDb = pTab->iDb; } - statResetCsr(pCsr); - sqlite3_finalize(pCsr->pStmt); - pCsr->pStmt = 0; - zMaster = pCsr->iDb==1 ? "sqlite_temp_master" : "sqlite_master"; - zSql = sqlite3_mprintf( - "SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type" - " UNION ALL " - "SELECT name, rootpage, type" - " FROM \"%w\".%s WHERE rootpage!=0" - " ORDER BY name", pTab->db->aDb[pCsr->iDb].zDbSName, zMaster); + if( idxNum & 0x02 ){ + /* name=? constraint is present */ + zName = (const char*)sqlite3_value_text(argv[iArg++]); + } + if( idxNum & 0x04 ){ + /* aggregate=? constraint is present */ + pCsr->isAgg = sqlite3_value_double(argv[iArg++])!=0.0; + }else{ + pCsr->isAgg = 0; + } + pSql = sqlite3_str_new(pTab->db); + sqlite3_str_appendf(pSql, + "SELECT * FROM (" + "SELECT 'sqlite_schema' AS name,1 AS rootpage,'table' AS type" + " UNION ALL " + "SELECT name,rootpage,type" + " FROM \"%w\".sqlite_schema WHERE rootpage!=0)", + pTab->db->aDb[pCsr->iDb].zDbSName); + if( zName ){ + sqlite3_str_appendf(pSql, "WHERE name=%Q", zName); + } + if( idxNum & 0x08 ){ + sqlite3_str_appendf(pSql, " ORDER BY name"); + } + zSql = sqlite3_str_finish(pSql); if( zSql==0 ){ return SQLITE_NOMEM_BKPT; }else{ @@ -181845,14 +219200,15 @@ static int statFilter( } if( rc==SQLITE_OK ){ + pCsr->iPage = -1; rc = statNext(pCursor); } return rc; } static int statColumn( - sqlite3_vtab_cursor *pCursor, - sqlite3_context *ctx, + sqlite3_vtab_cursor *pCursor, + sqlite3_context *ctx, int i ){ StatCursor *pCsr = (StatCursor *)pCursor; @@ -181861,38 +219217,52 @@ static int statColumn( sqlite3_result_text(ctx, pCsr->zName, -1, SQLITE_TRANSIENT); break; case 1: /* path */ - sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT); + if( !pCsr->isAgg ){ + sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT); + } break; case 2: /* pageno */ - sqlite3_result_int64(ctx, pCsr->iPageno); + if( pCsr->isAgg ){ + sqlite3_result_int64(ctx, pCsr->nPage); + }else{ + sqlite3_result_int64(ctx, pCsr->iPageno); + } break; case 3: /* pagetype */ - sqlite3_result_text(ctx, pCsr->zPagetype, -1, SQLITE_STATIC); + if( !pCsr->isAgg ){ + sqlite3_result_text(ctx, pCsr->zPagetype, -1, SQLITE_STATIC); + } break; case 4: /* ncell */ - sqlite3_result_int(ctx, pCsr->nCell); + sqlite3_result_int64(ctx, pCsr->nCell); break; case 5: /* payload */ - sqlite3_result_int(ctx, pCsr->nPayload); + sqlite3_result_int64(ctx, pCsr->nPayload); break; case 6: /* unused */ - sqlite3_result_int(ctx, pCsr->nUnused); + sqlite3_result_int64(ctx, pCsr->nUnused); break; case 7: /* mx_payload */ - sqlite3_result_int(ctx, pCsr->nMxPayload); + sqlite3_result_int64(ctx, pCsr->nMxPayload); break; case 8: /* pgoffset */ - sqlite3_result_int64(ctx, pCsr->iOffset); + if( !pCsr->isAgg ){ + sqlite3_result_int64(ctx, pCsr->iOffset); + } break; case 9: /* pgsize */ - sqlite3_result_int(ctx, pCsr->szPage); + sqlite3_result_int64(ctx, pCsr->szPage); break; - default: { /* schema */ + case 10: { /* schema */ sqlite3 *db = sqlite3_context_db_handle(ctx); int iDb = pCsr->iDb; sqlite3_result_text(ctx, db->aDb[iDb].zDbSName, -1, SQLITE_STATIC); break; } + default: { /* aggregate */ + sqlite3_result_int(ctx, pCsr->isAgg); + break; + } } return SQLITE_OK; } @@ -181931,6 +219301,7 @@ SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3 *db){ 0, /* xSavepoint */ 0, /* xRelease */ 0, /* xRollbackTo */ + 0 /* xShadowName */ }; return sqlite3_create_module(db, "dbstat", &dbstat_module, 0); } @@ -181955,7 +219326,7 @@ SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3 *db){ return SQLITE_OK; } ** This file contains an implementation of the "sqlite_dbpage" virtual table. ** ** The sqlite_dbpage virtual table is used to read or write whole raw -** pages of the database file. The pager interface is used so that +** pages of the database file. The pager interface is used so that ** uncommitted changes and changes recorded in the WAL file are correctly ** retrieved. ** @@ -182014,8 +219385,14 @@ static int dbpageConnect( ){ DbpageTable *pTab = 0; int rc = SQLITE_OK; + (void)pAux; + (void)argc; + (void)argv; + (void)pzErr; - rc = sqlite3_declare_vtab(db, + sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY); + sqlite3_vtab_config(db, SQLITE_VTAB_USES_ALL_SCHEMAS); + rc = sqlite3_declare_vtab(db, "CREATE TABLE x(pgno INTEGER PRIMARY KEY, data BLOB, schema HIDDEN)"); if( rc==SQLITE_OK ){ pTab = (DbpageTable *)sqlite3_malloc64(sizeof(DbpageTable)); @@ -182051,6 +219428,7 @@ static int dbpageDisconnect(sqlite3_vtab *pVtab){ static int dbpageBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ int i; int iPlan = 0; + (void)tab; /* If there is a schema= constraint, it must be honored. Report a ** ridiculously large estimated cost if the schema= constraint is @@ -182061,9 +219439,8 @@ static int dbpageBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ if( p->iColumn!=DBPAGE_COLUMN_SCHEMA ) continue; if( p->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; if( !p->usable ){ - /* No solution. Use the default SQLITE_BIG_DBL cost */ - pIdxInfo->estimatedRows = 0x7fffffff; - return SQLITE_OK; + /* No solution. */ + return SQLITE_CONSTRAINT; } iPlan = 2; pIdxInfo->aConstraintUsage[i].argvIndex = 1; @@ -182156,7 +219533,7 @@ static int dbpageEof(sqlite3_vtab_cursor *pCursor){ ** idxStr is not used */ static int dbpageFilter( - sqlite3_vtab_cursor *pCursor, + sqlite3_vtab_cursor *pCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv ){ @@ -182166,8 +219543,10 @@ static int dbpageFilter( sqlite3 *db = pTab->db; Btree *pBt; + (void)idxStr; + /* Default setting is no rows of result */ - pCsr->pgno = 1; + pCsr->pgno = 1; pCsr->mxPgno = 0; if( idxNum & 2 ){ @@ -182180,7 +219559,7 @@ static int dbpageFilter( pCsr->iDb = 0; } pBt = db->aDb[pCsr->iDb].pBt; - if( pBt==0 ) return SQLITE_OK; + if( NEVER(pBt==0) ) return SQLITE_OK; pCsr->pPager = sqlite3BtreePager(pBt); pCsr->szPage = sqlite3BtreeGetPageSize(pBt); pCsr->mxPgno = sqlite3BtreeLastPage(pBt); @@ -182202,8 +219581,8 @@ static int dbpageFilter( } static int dbpageColumn( - sqlite3_vtab_cursor *pCursor, - sqlite3_context *ctx, + sqlite3_vtab_cursor *pCursor, + sqlite3_context *ctx, int i ){ DbpageCursor *pCsr = (DbpageCursor *)pCursor; @@ -182215,12 +219594,18 @@ static int dbpageColumn( } case 1: { /* data */ DbPage *pDbPage = 0; - rc = sqlite3PagerGet(pCsr->pPager, pCsr->pgno, (DbPage**)&pDbPage, 0); - if( rc==SQLITE_OK ){ - sqlite3_result_blob(ctx, sqlite3PagerGetData(pDbPage), pCsr->szPage, - SQLITE_TRANSIENT); + if( pCsr->pgno==((PENDING_BYTE/pCsr->szPage)+1) ){ + /* The pending byte page. Assume it is zeroed out. Attempting to + ** request this page from the page is an SQLITE_CORRUPT error. */ + sqlite3_result_zeroblob(ctx, pCsr->szPage); + }else{ + rc = sqlite3PagerGet(pCsr->pPager, pCsr->pgno, (DbPage**)&pDbPage, 0); + if( rc==SQLITE_OK ){ + sqlite3_result_blob(ctx, sqlite3PagerGetData(pDbPage), pCsr->szPage, + SQLITE_TRANSIENT); + } + sqlite3PagerUnref(pDbPage); } - sqlite3PagerUnref(pDbPage); break; } default: { /* schema */ @@ -182229,7 +219614,7 @@ static int dbpageColumn( break; } } - return SQLITE_OK; + return rc; } static int dbpageRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ @@ -182255,28 +219640,35 @@ static int dbpageUpdate( Pager *pPager; int szPage; + (void)pRowid; + if( pTab->db->flags & SQLITE_Defensive ){ + zErr = "read-only"; + goto update_fail; + } if( argc==1 ){ zErr = "cannot delete"; goto update_fail; } pgno = sqlite3_value_int(argv[0]); - if( (Pgno)sqlite3_value_int(argv[1])!=pgno ){ + if( sqlite3_value_type(argv[0])==SQLITE_NULL + || (Pgno)sqlite3_value_int(argv[1])!=pgno + ){ zErr = "cannot insert"; goto update_fail; } zSchema = (const char*)sqlite3_value_text(argv[4]); - iDb = zSchema ? sqlite3FindDbName(pTab->db, zSchema) : -1; - if( iDb<0 ){ + iDb = ALWAYS(zSchema) ? sqlite3FindDbName(pTab->db, zSchema) : -1; + if( NEVER(iDb<0) ){ zErr = "no such schema"; goto update_fail; } pBt = pTab->db->aDb[iDb].pBt; - if( pgno<1 || pBt==0 || pgno>(int)sqlite3BtreeLastPage(pBt) ){ + if( NEVER(pgno<1) || NEVER(pBt==0) || NEVER(pgno>sqlite3BtreeLastPage(pBt)) ){ zErr = "bad page number"; goto update_fail; } szPage = sqlite3BtreeGetPageSize(pBt); - if( sqlite3_value_type(argv[3])!=SQLITE_BLOB + if( sqlite3_value_type(argv[3])!=SQLITE_BLOB || sqlite3_value_bytes(argv[3])!=szPage ){ zErr = "bad page value"; @@ -182285,11 +219677,12 @@ static int dbpageUpdate( pPager = sqlite3BtreePager(pBt); rc = sqlite3PagerGet(pPager, pgno, (DbPage**)&pDbPage, 0); if( rc==SQLITE_OK ){ - rc = sqlite3PagerWrite(pDbPage); - if( rc==SQLITE_OK ){ - memcpy(sqlite3PagerGetData(pDbPage), - sqlite3_value_blob(argv[3]), - szPage); + const void *pData = sqlite3_value_blob(argv[3]); + assert( pData!=0 || pTab->db->mallocFailed ); + if( pData + && (rc = sqlite3PagerWrite(pDbPage))==SQLITE_OK + ){ + memcpy(sqlite3PagerGetData(pDbPage), pData, szPage); } } sqlite3PagerUnref(pDbPage); @@ -182311,7 +219704,7 @@ static int dbpageBegin(sqlite3_vtab *pVtab){ int i; for(i=0; inDb; i++){ Btree *pBt = db->aDb[i].pBt; - if( pBt ) sqlite3BtreeBeginTrans(pBt, 1); + if( pBt ) (void)sqlite3BtreeBeginTrans(pBt, 1, 0); } return SQLITE_OK; } @@ -182345,6 +219738,7 @@ SQLITE_PRIVATE int sqlite3DbpageRegister(sqlite3 *db){ 0, /* xSavepoint */ 0, /* xRelease */ 0, /* xRollbackTo */ + 0 /* xShadowName */ }; return sqlite3_create_module(db, "sqlite_dbpage", &dbpage_module, 0); } @@ -182381,6 +219775,10 @@ typedef struct SessionInput SessionInput; # endif #endif +#define SESSIONS_ROWID "_rowid_" + +static int sessions_strm_chunk_size = SESSIONS_STRM_CHUNK_SIZE; + typedef struct SessionHook SessionHook; struct SessionHook { void *pCtx; @@ -182396,12 +219794,16 @@ struct SessionHook { struct sqlite3_session { sqlite3 *db; /* Database handle session is attached to */ char *zDb; /* Name of database session is attached to */ + int bEnableSize; /* True if changeset_size() enabled */ int bEnable; /* True if currently recording */ int bIndirect; /* True if all changes are indirect */ int bAutoAttach; /* True to auto-attach tables */ + int bImplicitPK; /* True to handle tables with implicit PK */ int rc; /* Non-zero if an error has occurred */ void *pFilterCtx; /* First argument to pass to xTableFilter */ int (*xTableFilter)(void *pCtx, const char *zTab); + i64 nMalloc; /* Number of bytes of data allocated */ + i64 nMaxChangesetSize; sqlite3_value *pZeroBlob; /* Value containing X'' */ sqlite3_session *pNext; /* Next session object on same db. */ SessionTable *pTable; /* List of attached tables */ @@ -182418,7 +219820,7 @@ struct SessionBuffer { }; /* -** An object of this type is used internally as an abstraction for +** An object of this type is used internally as an abstraction for ** input data. Input data may be supplied either as a single large buffer ** (e.g. sqlite3changeset_start()) or using a stream function (e.g. ** sqlite3changeset_start_strm()). @@ -182443,6 +219845,8 @@ struct sqlite3_changeset_iter { SessionInput in; /* Input buffer or stream */ SessionBuffer tblhdr; /* Buffer to hold apValue/zTab/abPK/ */ int bPatchset; /* True if this is a patchset */ + int bInvert; /* True to invert changeset */ + int bSkipEmpty; /* Skip noop UPDATE changes */ int rc; /* Iterator error code */ sqlite3_stmt *pConflict; /* Points to conflicting row, if any */ char *zTab; /* Current table */ @@ -182471,6 +219875,7 @@ struct SessionTable { char *zName; /* Local name of table */ int nCol; /* Number of columns in table zName */ int bStat1; /* True if this is sqlite_stat1 */ + int bRowid; /* True if this table uses rowid for PK */ const char **azCol; /* Column names */ u8 *abPK; /* Array of primary key flags */ int nEntry; /* Total number of entries in hash table */ @@ -182478,11 +219883,11 @@ struct SessionTable { SessionChange **apChange; /* Hash table buckets */ }; -/* +/* ** RECORD FORMAT: ** -** The following record format is similar to (but not compatible with) that -** used in SQLite database files. This format is used as part of the +** The following record format is similar to (but not compatible with) that +** used in SQLite database files. This format is used as part of the ** change-set binary format, and so must be architecture independent. ** ** Unlike the SQLite database record format, each field is self-contained - @@ -182516,7 +219921,7 @@ struct SessionTable { ** Real values: ** An 8-byte big-endian IEEE 754-2008 real value. ** -** Varint values are encoded in the same way as varints in the SQLite +** Varint values are encoded in the same way as varints in the SQLite ** record format. ** ** CHANGESET FORMAT: @@ -182548,7 +219953,7 @@ struct SessionTable { ** ** The new.* record that is part of each INSERT change contains the values ** that make up the new row. Similarly, the old.* record that is part of each -** DELETE change contains the values that made up the row that was deleted +** DELETE change contains the values that made up the row that was deleted ** from the database. In the changeset format, the records that are part ** of INSERT or DELETE changes never contain any undefined (type byte 0x00) ** fields. @@ -182557,8 +219962,8 @@ struct SessionTable { ** associated with table columns that are not PRIMARY KEY columns and are ** not modified by the UPDATE change are set to "undefined". Other fields ** are set to the values that made up the row before the UPDATE that the -** change records took place. Within the new.* record, fields associated -** with table columns modified by the UPDATE change contain the new +** change records took place. Within the new.* record, fields associated +** with table columns modified by the UPDATE change contain the new ** values. Fields associated with table columns that are not modified ** are set to "undefined". ** @@ -182584,7 +219989,7 @@ struct SessionTable { ** ** As in the changeset format, each field of the single record that is part ** of a patchset change is associated with the correspondingly positioned -** table column, counting from left to right within the CREATE TABLE +** table column, counting from left to right within the CREATE TABLE ** statement. ** ** For a DELETE change, all fields within the record except those associated @@ -182599,6 +220004,42 @@ struct SessionTable { ** The records associated with INSERT changes are in the same format as for ** changesets. It is not possible for a record associated with an INSERT ** change to contain a field set to "undefined". +** +** REBASE BLOB FORMAT: +** +** A rebase blob may be output by sqlite3changeset_apply_v2() and its +** streaming equivalent for use with the sqlite3_rebaser APIs to rebase +** existing changesets. A rebase blob contains one entry for each conflict +** resolved using either the OMIT or REPLACE strategies within the apply_v2() +** call. +** +** The format used for a rebase blob is very similar to that used for +** changesets. All entries related to a single table are grouped together. +** +** Each group of entries begins with a table header in changeset format: +** +** 1 byte: Constant 0x54 (capital 'T') +** Varint: Number of columns in the table. +** nCol bytes: 0x01 for PK columns, 0x00 otherwise. +** N bytes: Unqualified table name (encoded using UTF-8). Nul-terminated. +** +** Followed by one or more entries associated with the table. +** +** 1 byte: Either SQLITE_INSERT (0x12), DELETE (0x09). +** 1 byte: Flag. 0x01 for REPLACE, 0x00 for OMIT. +** record: (in the record format defined above). +** +** In a rebase blob, the first field is set to SQLITE_INSERT if the change +** that caused the conflict was an INSERT or UPDATE, or to SQLITE_DELETE if +** it was a DELETE. The second field is set to 0x01 if the conflict +** resolution strategy was REPLACE, or 0x00 if it was OMIT. +** +** If the change that caused the conflict was a DELETE, then the single +** record is a copy of the old.* record from the original changeset. If it +** was an INSERT, then the single record is a copy of the new.* record. If +** the conflicting change was an UPDATE, then the single record is a copy +** of the new.* record with the PK fields filled in based on the original +** old.* record. */ /* @@ -182606,15 +220047,16 @@ struct SessionTable { ** this structure stored in a SessionTable.aChange[] hash table. */ struct SessionChange { - int op; /* One of UPDATE, DELETE, INSERT */ - int bIndirect; /* True if this change is "indirect" */ + u8 op; /* One of UPDATE, DELETE, INSERT */ + u8 bIndirect; /* True if this change is "indirect" */ + int nMaxSize; /* Max size of eventual changeset record */ int nRecord; /* Number of bytes in buffer aRecord[] */ u8 *aRecord; /* Buffer containing old.* record */ SessionChange *pNext; /* For hash-table collisions */ }; /* -** Write a varint with value iVal into the buffer at aBuf. Return the +** Write a varint with value iVal into the buffer at aBuf. Return the ** number of bytes written. */ static int sessionVarintPut(u8 *aBuf, int iVal){ @@ -182629,7 +220071,7 @@ static int sessionVarintLen(int iVal){ } /* -** Read a varint value from aBuf[] into *piVal. Return the number of +** Read a varint value from aBuf[] into *piVal. Return the number of ** bytes read. */ static int sessionVarintGet(u8 *aBuf, int *piVal){ @@ -182668,34 +220110,34 @@ static void sessionPutI64(u8 *aBuf, sqlite3_int64 i){ ** This function is used to serialize the contents of value pValue (see ** comment titled "RECORD FORMAT" above). ** -** If it is non-NULL, the serialized form of the value is written to +** If it is non-NULL, the serialized form of the value is written to ** buffer aBuf. *pnWrite is set to the number of bytes written before ** returning. Or, if aBuf is NULL, the only thing this function does is ** set *pnWrite. ** ** If no error occurs, SQLITE_OK is returned. Or, if an OOM error occurs -** within a call to sqlite3_value_text() (may fail if the db is utf-16)) +** within a call to sqlite3_value_text() (may fail if the db is utf-16)) ** SQLITE_NOMEM is returned. */ static int sessionSerializeValue( u8 *aBuf, /* If non-NULL, write serialized value here */ sqlite3_value *pValue, /* Value to serialize */ - int *pnWrite /* IN/OUT: Increment by bytes written */ + sqlite3_int64 *pnWrite /* IN/OUT: Increment by bytes written */ ){ int nByte; /* Size of serialized value in bytes */ if( pValue ){ int eType; /* Value type (SQLITE_NULL, TEXT etc.) */ - + eType = sqlite3_value_type(pValue); if( aBuf ) aBuf[0] = eType; - + switch( eType ){ - case SQLITE_NULL: + case SQLITE_NULL: nByte = 1; break; - - case SQLITE_INTEGER: + + case SQLITE_INTEGER: case SQLITE_FLOAT: if( aBuf ){ /* TODO: SQLite does something special to deal with mixed-endian @@ -182712,14 +220154,14 @@ static int sessionSerializeValue( } sessionPutI64(&aBuf[1], i); } - nByte = 9; + nByte = 9; break; - + default: { u8 *z; int n; int nVarint; - + assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB ); if( eType==SQLITE_TEXT ){ z = (u8 *)sqlite3_value_text(pValue); @@ -182729,12 +220171,12 @@ static int sessionSerializeValue( n = sqlite3_value_bytes(pValue); if( z==0 && (eType!=SQLITE_BLOB || n>0) ) return SQLITE_NOMEM; nVarint = sessionVarintLen(n); - + if( aBuf ){ sessionVarintPut(&aBuf[1], n); - if( n ) memcpy(&aBuf[nVarint + 1], z, n); + if( n>0 ) memcpy(&aBuf[nVarint + 1], z, n); } - + nByte = 1 + nVarint + n; break; } @@ -182748,6 +220190,26 @@ static int sessionSerializeValue( return SQLITE_OK; } +/* +** Allocate and return a pointer to a buffer nByte bytes in size. If +** pSession is not NULL, increase the sqlite3_session.nMalloc variable +** by the number of bytes allocated. +*/ +static void *sessionMalloc64(sqlite3_session *pSession, i64 nByte){ + void *pRet = sqlite3_malloc64(nByte); + if( pSession ) pSession->nMalloc += sqlite3_msize(pRet); + return pRet; +} + +/* +** Free buffer pFree, which must have been allocated by an earlier +** call to sessionMalloc64(). If pSession is not NULL, decrease the +** sqlite3_session.nMalloc counter by the number of bytes freed. +*/ +static void sessionFree(sqlite3_session *pSession, void *pFree){ + if( pSession ) pSession->nMalloc -= sqlite3_msize(pFree); + sqlite3_free(pFree); +} /* ** This macro is used to calculate hash key values for data structures. In @@ -182776,7 +220238,7 @@ static unsigned int sessionHashAppendI64(unsigned int h, i64 i){ } /* -** Append the hash of the blob passed via the second and third arguments to +** Append the hash of the blob passed via the second and third arguments to ** the hash-key value passed as the first. Return the new hash-key value. */ static unsigned int sessionHashAppendBlob(unsigned int h, int n, const u8 *z){ @@ -182795,7 +220257,7 @@ static unsigned int sessionHashAppendType(unsigned int h, int eType){ /* ** This function may only be called from within a pre-update callback. -** It calculates a hash based on the primary key values of the old.* or +** It calculates a hash based on the primary key values of the old.* or ** new.* row currently available and, assuming no error occurs, writes it to ** *piHash before returning. If the primary key contains one or more NULL ** values, *pbNullPK is set to true before returning. @@ -182806,6 +220268,7 @@ static unsigned int sessionHashAppendType(unsigned int h, int eType){ */ static int sessionPreupdateHash( sqlite3_session *pSession, /* Session object that owns pTab */ + i64 iRowid, SessionTable *pTab, /* Session table handle */ int bNew, /* True to hash the new.* PK */ int *piHash, /* OUT: Hash value */ @@ -182814,48 +220277,53 @@ static int sessionPreupdateHash( unsigned int h = 0; /* Hash value to return */ int i; /* Used to iterate through columns */ - assert( *pbNullPK==0 ); - assert( pTab->nCol==pSession->hook.xCount(pSession->hook.pCtx) ); - for(i=0; inCol; i++){ - if( pTab->abPK[i] ){ - int rc; - int eType; - sqlite3_value *pVal; + if( pTab->bRowid ){ + assert( pTab->nCol-1==pSession->hook.xCount(pSession->hook.pCtx) ); + h = sessionHashAppendI64(h, iRowid); + }else{ + assert( *pbNullPK==0 ); + assert( pTab->nCol==pSession->hook.xCount(pSession->hook.pCtx) ); + for(i=0; inCol; i++){ + if( pTab->abPK[i] ){ + int rc; + int eType; + sqlite3_value *pVal; - if( bNew ){ - rc = pSession->hook.xNew(pSession->hook.pCtx, i, &pVal); - }else{ - rc = pSession->hook.xOld(pSession->hook.pCtx, i, &pVal); - } - if( rc!=SQLITE_OK ) return rc; + if( bNew ){ + rc = pSession->hook.xNew(pSession->hook.pCtx, i, &pVal); + }else{ + rc = pSession->hook.xOld(pSession->hook.pCtx, i, &pVal); + } + if( rc!=SQLITE_OK ) return rc; - eType = sqlite3_value_type(pVal); - h = sessionHashAppendType(h, eType); - if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){ - i64 iVal; - if( eType==SQLITE_INTEGER ){ - iVal = sqlite3_value_int64(pVal); + eType = sqlite3_value_type(pVal); + h = sessionHashAppendType(h, eType); + if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){ + i64 iVal; + if( eType==SQLITE_INTEGER ){ + iVal = sqlite3_value_int64(pVal); + }else{ + double rVal = sqlite3_value_double(pVal); + assert( sizeof(iVal)==8 && sizeof(rVal)==8 ); + memcpy(&iVal, &rVal, 8); + } + h = sessionHashAppendI64(h, iVal); + }else if( eType==SQLITE_TEXT || eType==SQLITE_BLOB ){ + const u8 *z; + int n; + if( eType==SQLITE_TEXT ){ + z = (const u8 *)sqlite3_value_text(pVal); + }else{ + z = (const u8 *)sqlite3_value_blob(pVal); + } + n = sqlite3_value_bytes(pVal); + if( !z && (eType!=SQLITE_BLOB || n>0) ) return SQLITE_NOMEM; + h = sessionHashAppendBlob(h, n, z); }else{ - double rVal = sqlite3_value_double(pVal); - assert( sizeof(iVal)==8 && sizeof(rVal)==8 ); - memcpy(&iVal, &rVal, 8); + assert( eType==SQLITE_NULL ); + assert( pTab->bStat1==0 || i!=1 ); + *pbNullPK = 1; } - h = sessionHashAppendI64(h, iVal); - }else if( eType==SQLITE_TEXT || eType==SQLITE_BLOB ){ - const u8 *z; - int n; - if( eType==SQLITE_TEXT ){ - z = (const u8 *)sqlite3_value_text(pVal); - }else{ - z = (const u8 *)sqlite3_value_blob(pVal); - } - n = sqlite3_value_bytes(pVal); - if( !z && (eType!=SQLITE_BLOB || n>0) ) return SQLITE_NOMEM; - h = sessionHashAppendBlob(h, n, z); - }else{ - assert( eType==SQLITE_NULL ); - assert( pTab->bStat1==0 || i!=1 ); - *pbNullPK = 1; } } } @@ -182902,12 +220370,12 @@ static unsigned int sessionChangeHash( int isPK = pTab->abPK[i]; if( bPkOnly && isPK==0 ) continue; - /* It is not possible for eType to be SQLITE_NULL here. The session + /* It is not possible for eType to be SQLITE_NULL here. The session ** module does not record changes for rows with NULL values stored in ** primary key columns. */ - assert( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT - || eType==SQLITE_TEXT || eType==SQLITE_BLOB - || eType==SQLITE_NULL || eType==0 + assert( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT + || eType==SQLITE_TEXT || eType==SQLITE_BLOB + || eType==SQLITE_NULL || eType==0 ); assert( !isPK || (eType!=0 && eType!=SQLITE_NULL) ); @@ -182918,7 +220386,7 @@ static unsigned int sessionChangeHash( h = sessionHashAppendI64(h, sessionGetI64(a)); a += 8; }else{ - int n; + int n; a += sessionVarintGet(a, &n); h = sessionHashAppendBlob(h, n, a); a += n; @@ -182933,7 +220401,7 @@ static unsigned int sessionChangeHash( /* ** Arguments aLeft and aRight are pointers to change records for table pTab. ** This function returns true if the two records apply to the same row (i.e. -** have the same values stored in the primary key columns), or false +** have the same values stored in the primary key columns), or false ** otherwise. */ static int sessionChangeEqual( @@ -182970,17 +220438,17 @@ static int sessionChangeEqual( ** Arguments aLeft and aRight both point to buffers containing change ** records with nCol columns. This function "merges" the two records into ** a single records which is written to the buffer at *paOut. *paOut is -** then set to point to one byte after the last byte written before +** then set to point to one byte after the last byte written before ** returning. ** -** The merging of records is done as follows: For each column, if the +** The merging of records is done as follows: For each column, if the ** aRight record contains a value for the column, copy the value from ** their. Otherwise, if aLeft contains a value, copy it. If neither ** record contains a value for a given column, then neither does the ** output record. */ static void sessionMergeRecord( - u8 **paOut, + u8 **paOut, int nCol, u8 *aLeft, u8 *aRight @@ -183010,13 +220478,13 @@ static void sessionMergeRecord( /* ** This is a helper function used by sessionMergeUpdate(). ** -** When this function is called, both *paOne and *paTwo point to a value -** within a change record. Before it returns, both have been advanced so +** When this function is called, both *paOne and *paTwo point to a value +** within a change record. Before it returns, both have been advanced so ** as to point to the next value in the record. ** ** If, when this function is called, *paTwo points to a valid value (i.e. ** *paTwo[0] is not 0x00 - the "no value" placeholder), a copy of the *paTwo -** pointer is returned and *pnVal is set to the number of bytes in the +** pointer is returned and *pnVal is set to the number of bytes in the ** serialized value. Otherwise, a copy of *paOne is returned and *pnVal ** set to the number of bytes in the value at *paOne. If *paOne points ** to the "no value" placeholder, *pnVal is set to 1. In other words: @@ -183115,8 +220583,8 @@ static int sessionMergeUpdate( aOld = sessionMergeValue(&aOld1, &aOld2, &nOld); aNew = sessionMergeValue(&aNew1, &aNew2, &nNew); - if( bPatchset==0 - && (pTab->abPK[i] || (nOld==nNew && 0==memcmp(aOld, aNew, nNew))) + if( bPatchset==0 + && (pTab->abPK[i] || (nOld==nNew && 0==memcmp(aOld, aNew, nNew))) ){ *(aOut++) = '\0'; }else{ @@ -183138,6 +220606,7 @@ static int sessionMergeUpdate( */ static int sessionPreupdateEqual( sqlite3_session *pSession, /* Session object that owns SessionTable */ + i64 iRowid, /* Rowid value if pTab->bRowid */ SessionTable *pTab, /* Table associated with change */ SessionChange *pChange, /* Change to compare to */ int op /* Current pre-update operation */ @@ -183145,6 +220614,11 @@ static int sessionPreupdateEqual( int iCol; /* Used to iterate through columns */ u8 *a = pChange->aRecord; /* Cursor used to scan change record */ + if( pTab->bRowid ){ + if( a[0]!=SQLITE_INTEGER ) return 0; + return sessionGetI64(&a[1])==iRowid; + } + assert( op==SQLITE_INSERT || op==SQLITE_UPDATE || op==SQLITE_DELETE ); for(iCol=0; iColnCol; iCol++){ if( !pTab->abPK[iCol] ){ @@ -183167,6 +220641,7 @@ static int sessionPreupdateEqual( rc = pSession->hook.xOld(pSession->hook.pCtx, iCol, &pVal); } assert( rc==SQLITE_OK ); + (void)rc; /* Suppress warning about unused variable */ if( sqlite3_value_type(pVal)!=eType ) return 0; /* A SessionChange object never has a NULL value in a PK column */ @@ -183205,7 +220680,7 @@ static int sessionPreupdateEqual( } /* -** If required, grow the hash table used to store changes on table pTab +** If required, grow the hash table used to store changes on table pTab ** (part of the session pSession). If a fatal OOM error occurs, set the ** session object to failed and return SQLITE_ERROR. Otherwise, return ** SQLITE_OK. @@ -183215,13 +220690,19 @@ static int sessionPreupdateEqual( ** Growing the hash table in this case is a performance optimization only, ** it is not required for correct operation. */ -static int sessionGrowHash(int bPatchset, SessionTable *pTab){ +static int sessionGrowHash( + sqlite3_session *pSession, /* For memory accounting. May be NULL */ + int bPatchset, + SessionTable *pTab +){ if( pTab->nChange==0 || pTab->nEntry>=(pTab->nChange/2) ){ int i; SessionChange **apNew; - int nNew = (pTab->nChange ? pTab->nChange : 128) * 2; + sqlite3_int64 nNew = 2*(sqlite3_int64)(pTab->nChange ? pTab->nChange : 128); - apNew = (SessionChange **)sqlite3_malloc(sizeof(SessionChange *) * nNew); + apNew = (SessionChange**)sessionMalloc64( + pSession, sizeof(SessionChange*) * nNew + ); if( apNew==0 ){ if( pTab->nChange==0 ){ return SQLITE_ERROR; @@ -183242,7 +220723,7 @@ static int sessionGrowHash(int bPatchset, SessionTable *pTab){ } } - sqlite3_free(pTab->apChange); + sessionFree(pSession, pTab->apChange); pTab->nChange = nNew; pTab->apChange = apNew; } @@ -183276,24 +220757,27 @@ static int sessionGrowHash(int bPatchset, SessionTable *pTab){ ** be freed using sqlite3_free() by the caller */ static int sessionTableInfo( + sqlite3_session *pSession, /* For memory accounting. May be NULL */ sqlite3 *db, /* Database connection */ const char *zDb, /* Name of attached database (e.g. "main") */ const char *zThis, /* Table name */ int *pnCol, /* OUT: number of columns */ const char **pzTab, /* OUT: Copy of zThis */ const char ***pazCol, /* OUT: Array of column names for table */ - u8 **pabPK /* OUT: Array of booleans - true for PK col */ + u8 **pabPK, /* OUT: Array of booleans - true for PK col */ + int *pbRowid /* OUT: True if only PK is a rowid */ ){ char *zPragma; sqlite3_stmt *pStmt; int rc; - int nByte; + sqlite3_int64 nByte; int nDbCol = 0; int nThis; int i; u8 *pAlloc = 0; char **azCol = 0; u8 *abPK = 0; + int bRowid = 0; /* Set to true to use rowid as PK */ assert( pazCol && pabPK ); @@ -183310,27 +220794,48 @@ static int sessionTableInfo( }else if( rc==SQLITE_ERROR ){ zPragma = sqlite3_mprintf(""); }else{ + *pazCol = 0; + *pabPK = 0; + *pnCol = 0; + if( pzTab ) *pzTab = 0; return rc; } }else{ zPragma = sqlite3_mprintf("PRAGMA '%q'.table_info('%q')", zDb, zThis); } - if( !zPragma ) return SQLITE_NOMEM; + if( !zPragma ){ + *pazCol = 0; + *pabPK = 0; + *pnCol = 0; + if( pzTab ) *pzTab = 0; + return SQLITE_NOMEM; + } rc = sqlite3_prepare_v2(db, zPragma, -1, &pStmt, 0); sqlite3_free(zPragma); - if( rc!=SQLITE_OK ) return rc; + if( rc!=SQLITE_OK ){ + *pazCol = 0; + *pabPK = 0; + *pnCol = 0; + if( pzTab ) *pzTab = 0; + return rc; + } nByte = nThis + 1; + bRowid = (pbRowid!=0); while( SQLITE_ROW==sqlite3_step(pStmt) ){ nByte += sqlite3_column_bytes(pStmt, 1); nDbCol++; + if( sqlite3_column_int(pStmt, 5) ) bRowid = 0; } + if( nDbCol==0 ) bRowid = 0; + nDbCol += bRowid; + nByte += strlen(SESSIONS_ROWID); rc = sqlite3_reset(pStmt); if( rc==SQLITE_OK ){ nByte += nDbCol * (sizeof(const char *) + sizeof(u8) + 1); - pAlloc = sqlite3_malloc(nByte); + pAlloc = sessionMalloc64(pSession, nByte); if( pAlloc==0 ){ rc = SQLITE_NOMEM; } @@ -183345,8 +220850,16 @@ static int sessionTableInfo( *pzTab = (char *)pAlloc; pAlloc += nThis+1; } - + i = 0; + if( bRowid ){ + size_t nName = strlen(SESSIONS_ROWID); + memcpy(pAlloc, SESSIONS_ROWID, nName+1); + azCol[i] = (char*)pAlloc; + pAlloc += nName+1; + abPK[i] = 1; + i++; + } while( SQLITE_ROW==sqlite3_step(pStmt) ){ int nName = sqlite3_column_bytes(pStmt, 1); const unsigned char *zName = sqlite3_column_text(pStmt, 1); @@ -183358,7 +220871,6 @@ static int sessionTableInfo( i++; } rc = sqlite3_reset(pStmt); - } /* If successful, populate the output variables. Otherwise, zero them and @@ -183373,8 +220885,9 @@ static int sessionTableInfo( *pabPK = 0; *pnCol = 0; if( pzTab ) *pzTab = 0; - sqlite3_free(azCol); + sessionFree(pSession, azCol); } + if( pbRowid ) *pbRowid = bRowid; sqlite3_finalize(pStmt); return rc; } @@ -183388,15 +220901,16 @@ static int sessionTableInfo( ** If an error occurs, an error code is stored in sqlite3_session.rc and ** non-zero returned. Or, if no error occurs but the table has no primary ** key, sqlite3_session.rc is left set to SQLITE_OK and non-zero returned to -** indicate that updates on this table should be ignored. SessionTable.abPK +** indicate that updates on this table should be ignored. SessionTable.abPK ** is set to NULL in this case. */ static int sessionInitTable(sqlite3_session *pSession, SessionTable *pTab){ if( pTab->nCol==0 ){ u8 *abPK; assert( pTab->azCol==0 || pTab->abPK==0 ); - pSession->rc = sessionTableInfo(pSession->db, pSession->zDb, - pTab->zName, &pTab->nCol, 0, &pTab->azCol, &abPK + pSession->rc = sessionTableInfo(pSession, pSession->db, pSession->zDb, + pTab->zName, &pTab->nCol, 0, &pTab->azCol, &abPK, + (pSession->bImplicitPK ? &pTab->bRowid : 0) ); if( pSession->rc==SQLITE_OK ){ int i; @@ -183409,6 +220923,12 @@ static int sessionInitTable(sqlite3_session *pSession, SessionTable *pTab){ if( 0==sqlite3_stricmp("sqlite_stat1", pTab->zName) ){ pTab->bStat1 = 1; } + + if( pSession->bEnableSize ){ + pSession->nMaxChangesetSize += ( + 1 + sessionVarintLen(pTab->nCol) + pTab->nCol + strlen(pTab->zName)+1 + ); + } } } return (pSession->rc || pTab->abPK==0); @@ -183454,9 +220974,111 @@ static int sessionStat1Depth(void *pCtx){ return p->hook.xDepth(p->hook.pCtx); } +static int sessionUpdateMaxSize( + int op, + sqlite3_session *pSession, /* Session object pTab is attached to */ + SessionTable *pTab, /* Table that change applies to */ + SessionChange *pC /* Update pC->nMaxSize */ +){ + i64 nNew = 2; + if( pC->op==SQLITE_INSERT ){ + if( pTab->bRowid ) nNew += 9; + if( op!=SQLITE_DELETE ){ + int ii; + for(ii=0; iinCol; ii++){ + sqlite3_value *p = 0; + pSession->hook.xNew(pSession->hook.pCtx, ii, &p); + sessionSerializeValue(0, p, &nNew); + } + } + }else if( op==SQLITE_DELETE ){ + nNew += pC->nRecord; + if( sqlite3_preupdate_blobwrite(pSession->db)>=0 ){ + nNew += pC->nRecord; + } + }else{ + int ii; + u8 *pCsr = pC->aRecord; + if( pTab->bRowid ){ + nNew += 9 + 1; + pCsr += 9; + } + for(ii=pTab->bRowid; iinCol; ii++){ + int bChanged = 1; + int nOld = 0; + int eType; + sqlite3_value *p = 0; + pSession->hook.xNew(pSession->hook.pCtx, ii-pTab->bRowid, &p); + if( p==0 ){ + return SQLITE_NOMEM; + } + + eType = *pCsr++; + switch( eType ){ + case SQLITE_NULL: + bChanged = sqlite3_value_type(p)!=SQLITE_NULL; + break; + + case SQLITE_FLOAT: + case SQLITE_INTEGER: { + if( eType==sqlite3_value_type(p) ){ + sqlite3_int64 iVal = sessionGetI64(pCsr); + if( eType==SQLITE_INTEGER ){ + bChanged = (iVal!=sqlite3_value_int64(p)); + }else{ + double dVal; + memcpy(&dVal, &iVal, 8); + bChanged = (dVal!=sqlite3_value_double(p)); + } + } + nOld = 8; + pCsr += 8; + break; + } + + default: { + int nByte; + nOld = sessionVarintGet(pCsr, &nByte); + pCsr += nOld; + nOld += nByte; + assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB ); + if( eType==sqlite3_value_type(p) + && nByte==sqlite3_value_bytes(p) + && (nByte==0 || 0==memcmp(pCsr, sqlite3_value_blob(p), nByte)) + ){ + bChanged = 0; + } + pCsr += nByte; + break; + } + } + + if( bChanged && pTab->abPK[ii] ){ + nNew = pC->nRecord + 2; + break; + } + + if( bChanged ){ + nNew += 1 + nOld; + sessionSerializeValue(0, p, &nNew); + }else if( pTab->abPK[ii] ){ + nNew += 2 + nOld; + }else{ + nNew += 2; + } + } + } + + if( nNew>pC->nMaxSize ){ + int nIncr = nNew - pC->nMaxSize; + pC->nMaxSize = nNew; + pSession->nMaxChangesetSize += nIncr; + } + return SQLITE_OK; +} /* -** This function is only called from with a pre-update-hook reporting a +** This function is only called from with a pre-update-hook reporting a ** change on table pTab (attached to session pSession). The type of change ** (UPDATE, INSERT, DELETE) is specified by the first argument. ** @@ -183465,28 +221087,29 @@ static int sessionStat1Depth(void *pCtx){ */ static void sessionPreupdateOneChange( int op, /* One of SQLITE_UPDATE, INSERT, DELETE */ + i64 iRowid, sqlite3_session *pSession, /* Session object pTab is attached to */ SessionTable *pTab /* Table that change applies to */ ){ - int iHash; - int bNull = 0; + int iHash; + int bNull = 0; int rc = SQLITE_OK; - SessionStat1Ctx stat1 = {0}; + SessionStat1Ctx stat1 = {{0,0,0,0,0},0}; if( pSession->rc ) return; /* Load table details if required */ if( sessionInitTable(pSession, pTab) ) return; - /* Check the number of columns in this xPreUpdate call matches the + /* Check the number of columns in this xPreUpdate call matches the ** number of columns in the table. */ - if( pTab->nCol!=pSession->hook.xCount(pSession->hook.pCtx) ){ + if( (pTab->nCol-pTab->bRowid)!=pSession->hook.xCount(pSession->hook.pCtx) ){ pSession->rc = SQLITE_SCHEMA; return; } /* Grow the hash table if required */ - if( sessionGrowHash(0, pTab) ){ + if( sessionGrowHash(pSession, 0, pTab) ){ pSession->rc = SQLITE_NOMEM; return; } @@ -183513,30 +221136,31 @@ static void sessionPreupdateOneChange( /* Calculate the hash-key for this change. If the primary key of the row ** includes a NULL value, exit early. Such changes are ignored by the ** session module. */ - rc = sessionPreupdateHash(pSession, pTab, op==SQLITE_INSERT, &iHash, &bNull); + rc = sessionPreupdateHash( + pSession, iRowid, pTab, op==SQLITE_INSERT, &iHash, &bNull + ); if( rc!=SQLITE_OK ) goto error_out; if( bNull==0 ){ /* Search the hash table for an existing record for this row. */ SessionChange *pC; for(pC=pTab->apChange[iHash]; pC; pC=pC->pNext){ - if( sessionPreupdateEqual(pSession, pTab, pC, op) ) break; + if( sessionPreupdateEqual(pSession, iRowid, pTab, pC, op) ) break; } if( pC==0 ){ /* Create a new change object containing all the old values (if ** this is an SQLITE_UPDATE or SQLITE_DELETE), or just the PK ** values (if this is an INSERT). */ - SessionChange *pChange; /* New change object */ - int nByte; /* Number of bytes to allocate */ + sqlite3_int64 nByte; /* Number of bytes to allocate */ int i; /* Used to iterate through columns */ - + assert( rc==SQLITE_OK ); pTab->nEntry++; - + /* Figure out how large an allocation is required */ nByte = sizeof(SessionChange); - for(i=0; inCol; i++){ + for(i=0; i<(pTab->nCol-pTab->bRowid); i++){ sqlite3_value *p = 0; if( op!=SQLITE_INSERT ){ TESTONLY(int trc = ) pSession->hook.xOld(pSession->hook.pCtx, i, &p); @@ -183551,52 +221175,66 @@ static void sessionPreupdateOneChange( rc = sessionSerializeValue(0, p, &nByte); if( rc!=SQLITE_OK ) goto error_out; } - + if( pTab->bRowid ){ + nByte += 9; /* Size of rowid field - an integer */ + } + /* Allocate the change object */ - pChange = (SessionChange *)sqlite3_malloc(nByte); - if( !pChange ){ + pC = (SessionChange *)sessionMalloc64(pSession, nByte); + if( !pC ){ rc = SQLITE_NOMEM; goto error_out; }else{ - memset(pChange, 0, sizeof(SessionChange)); - pChange->aRecord = (u8 *)&pChange[1]; + memset(pC, 0, sizeof(SessionChange)); + pC->aRecord = (u8 *)&pC[1]; } - + /* Populate the change object. None of the preupdate_old(), ** preupdate_new() or SerializeValue() calls below may fail as all ** required values and encodings have already been cached in memory. ** It is not possible for an OOM to occur in this block. */ nByte = 0; - for(i=0; inCol; i++){ + if( pTab->bRowid ){ + pC->aRecord[0] = SQLITE_INTEGER; + sessionPutI64(&pC->aRecord[1], iRowid); + nByte = 9; + } + for(i=0; i<(pTab->nCol-pTab->bRowid); i++){ sqlite3_value *p = 0; if( op!=SQLITE_INSERT ){ pSession->hook.xOld(pSession->hook.pCtx, i, &p); }else if( pTab->abPK[i] ){ pSession->hook.xNew(pSession->hook.pCtx, i, &p); } - sessionSerializeValue(&pChange->aRecord[nByte], p, &nByte); + sessionSerializeValue(&pC->aRecord[nByte], p, &nByte); } /* Add the change to the hash-table */ if( pSession->bIndirect || pSession->hook.xDepth(pSession->hook.pCtx) ){ - pChange->bIndirect = 1; + pC->bIndirect = 1; } - pChange->nRecord = nByte; - pChange->op = op; - pChange->pNext = pTab->apChange[iHash]; - pTab->apChange[iHash] = pChange; + pC->nRecord = nByte; + pC->op = op; + pC->pNext = pTab->apChange[iHash]; + pTab->apChange[iHash] = pC; }else if( pC->bIndirect ){ /* If the existing change is considered "indirect", but this current ** change is "direct", mark the change object as direct. */ - if( pSession->hook.xDepth(pSession->hook.pCtx)==0 - && pSession->bIndirect==0 + if( pSession->hook.xDepth(pSession->hook.pCtx)==0 + && pSession->bIndirect==0 ){ pC->bIndirect = 0; } } + + assert( rc==SQLITE_OK ); + if( pSession->bEnableSize ){ + rc = sessionUpdateMaxSize(op, pSession, pTab, pC); + } } + /* If an error has occurred, mark the session object as failed. */ error_out: if( pTab->bStat1 ){ @@ -183608,7 +221246,7 @@ static void sessionPreupdateOneChange( } static int sessionFindTable( - sqlite3_session *pSession, + sqlite3_session *pSession, const char *zName, SessionTable **ppTab ){ @@ -183625,11 +221263,15 @@ static int sessionFindTable( /* If there is a table-filter configured, invoke it. If it returns 0, ** do not automatically add the new table. */ if( pSession->xTableFilter==0 - || pSession->xTableFilter(pSession->pFilterCtx, zName) + || pSession->xTableFilter(pSession->pFilterCtx, zName) ){ rc = sqlite3session_attach(pSession, zName); if( rc==SQLITE_OK ){ - for(pRet=pSession->pTable; pRet->pNext; pRet=pRet->pNext); + pRet = pSession->pTable; + while( ALWAYS(pRet) && pRet->pNext ){ + pRet = pRet->pNext; + } + assert( pRet!=0 ); assert( 0==sqlite3_strnicmp(pRet->zName, zName, nName+1) ); } } @@ -183656,12 +221298,14 @@ static void xPreUpdate( int nDb = sqlite3Strlen30(zDb); assert( sqlite3_mutex_held(db->mutex) ); + (void)iKey1; + (void)iKey2; for(pSession=(sqlite3_session *)pCtx; pSession; pSession=pSession->pNext){ SessionTable *pTab; - /* If this session is attached to a different database ("main", "temp" - ** etc.), or if it is not currently enabled, there is nothing to do. Skip + /* If this session is attached to a different database ("main", "temp" + ** etc.), or if it is not currently enabled, there is nothing to do. Skip ** to the next session object attached to this database. */ if( pSession->bEnable==0 ) continue; if( pSession->rc ) continue; @@ -183670,9 +221314,10 @@ static void xPreUpdate( pSession->rc = sessionFindTable(pSession, zName, &pTab); if( pTab ){ assert( pSession->rc==SQLITE_OK ); - sessionPreupdateOneChange(op, pSession, pTab); + assert( op==SQLITE_UPDATE || iKey1==iKey2 ); + sessionPreupdateOneChange(op, iKey1, pSession, pTab); if( op==SQLITE_UPDATE ){ - sessionPreupdateOneChange(SQLITE_INSERT, pSession, pTab); + sessionPreupdateOneChange(SQLITE_INSERT, iKey2, pSession, pTab); } } } @@ -183711,6 +221356,7 @@ static void sessionPreupdateHooks( typedef struct SessionDiffCtx SessionDiffCtx; struct SessionDiffCtx { sqlite3_stmt *pStmt; + int bRowid; int nOldOff; }; @@ -183719,19 +221365,20 @@ struct SessionDiffCtx { */ static int sessionDiffOld(void *pCtx, int iVal, sqlite3_value **ppVal){ SessionDiffCtx *p = (SessionDiffCtx*)pCtx; - *ppVal = sqlite3_column_value(p->pStmt, iVal+p->nOldOff); + *ppVal = sqlite3_column_value(p->pStmt, iVal+p->nOldOff+p->bRowid); return SQLITE_OK; } static int sessionDiffNew(void *pCtx, int iVal, sqlite3_value **ppVal){ SessionDiffCtx *p = (SessionDiffCtx*)pCtx; - *ppVal = sqlite3_column_value(p->pStmt, iVal); + *ppVal = sqlite3_column_value(p->pStmt, iVal+p->bRowid); return SQLITE_OK; } static int sessionDiffCount(void *pCtx){ SessionDiffCtx *p = (SessionDiffCtx*)pCtx; - return p->nOldOff ? p->nOldOff : sqlite3_column_count(p->pStmt); + return (p->nOldOff ? p->nOldOff : sqlite3_column_count(p->pStmt)) - p->bRowid; } static int sessionDiffDepth(void *pCtx){ + (void)pCtx; return 0; } @@ -183752,7 +221399,7 @@ static void sessionDiffHooks( static char *sessionExprComparePK( int nCol, - const char *zDb1, const char *zDb2, + const char *zDb1, const char *zDb2, const char *zTab, const char **azCol, u8 *abPK ){ @@ -183775,7 +221422,7 @@ static char *sessionExprComparePK( static char *sessionExprCompareOther( int nCol, - const char *zDb1, const char *zDb2, + const char *zDb1, const char *zDb2, const char *zTab, const char **azCol, u8 *abPK ){ @@ -183805,17 +221452,18 @@ static char *sessionExprCompareOther( } static char *sessionSelectFindNew( - int nCol, const char *zDb1, /* Pick rows in this db only */ const char *zDb2, /* But not in this one */ + int bRowid, const char *zTbl, /* Table name */ const char *zExpr ){ + const char *zSel = (bRowid ? SESSIONS_ROWID ", *" : "*"); char *zRet = sqlite3_mprintf( - "SELECT * FROM \"%w\".\"%w\" WHERE NOT EXISTS (" + "SELECT %s FROM \"%w\".\"%w\" WHERE NOT EXISTS (" " SELECT 1 FROM \"%w\".\"%w\" WHERE %s" ")", - zDb1, zTbl, zDb2, zTbl, zExpr + zSel, zDb1, zTbl, zDb2, zTbl, zExpr ); return zRet; } @@ -183829,7 +221477,9 @@ static int sessionDiffFindNew( char *zExpr ){ int rc = SQLITE_OK; - char *zStmt = sessionSelectFindNew(pTab->nCol, zDb1, zDb2, pTab->zName,zExpr); + char *zStmt = sessionSelectFindNew( + zDb1, zDb2, pTab->bRowid, pTab->zName, zExpr + ); if( zStmt==0 ){ rc = SQLITE_NOMEM; @@ -183840,8 +221490,10 @@ static int sessionDiffFindNew( SessionDiffCtx *pDiffCtx = (SessionDiffCtx*)pSession->hook.pCtx; pDiffCtx->pStmt = pStmt; pDiffCtx->nOldOff = 0; + pDiffCtx->bRowid = pTab->bRowid; while( SQLITE_ROW==sqlite3_step(pStmt) ){ - sessionPreupdateOneChange(op, pSession, pTab); + i64 iRowid = (pTab->bRowid ? sqlite3_column_int64(pStmt, 0) : 0); + sessionPreupdateOneChange(op, iRowid, pSession, pTab); } rc = sqlite3_finalize(pStmt); } @@ -183851,10 +221503,31 @@ static int sessionDiffFindNew( return rc; } +/* +** Return a comma-separated list of the fully-qualified (with both database +** and table name) column names from table pTab. e.g. +** +** "main"."t1"."a", "main"."t1"."b", "main"."t1"."c" +*/ +static char *sessionAllCols( + const char *zDb, + SessionTable *pTab +){ + int ii; + char *zRet = 0; + for(ii=0; iinCol; ii++){ + zRet = sqlite3_mprintf("%z%s\"%w\".\"%w\".\"%w\"", + zRet, (zRet ? ", " : ""), zDb, pTab->zName, pTab->azCol[ii] + ); + if( !zRet ) break; + } + return zRet; +} + static int sessionDiffFindModified( - sqlite3_session *pSession, - SessionTable *pTab, - const char *zFrom, + sqlite3_session *pSession, + SessionTable *pTab, + const char *zFrom, const char *zExpr ){ int rc = SQLITE_OK; @@ -183865,11 +221538,13 @@ static int sessionDiffFindModified( if( zExpr2==0 ){ rc = SQLITE_NOMEM; }else{ + char *z1 = sessionAllCols(pSession->zDb, pTab); + char *z2 = sessionAllCols(zFrom, pTab); char *zStmt = sqlite3_mprintf( - "SELECT * FROM \"%w\".\"%w\", \"%w\".\"%w\" WHERE %s AND (%z)", - pSession->zDb, pTab->zName, zFrom, pTab->zName, zExpr, zExpr2 + "SELECT %s,%s FROM \"%w\".\"%w\", \"%w\".\"%w\" WHERE %s AND (%z)", + z1, z2, pSession->zDb, pTab->zName, zFrom, pTab->zName, zExpr, zExpr2 ); - if( zStmt==0 ){ + if( zStmt==0 || z1==0 || z2==0 ){ rc = SQLITE_NOMEM; }else{ sqlite3_stmt *pStmt; @@ -183880,12 +221555,15 @@ static int sessionDiffFindModified( pDiffCtx->pStmt = pStmt; pDiffCtx->nOldOff = pTab->nCol; while( SQLITE_ROW==sqlite3_step(pStmt) ){ - sessionPreupdateOneChange(SQLITE_UPDATE, pSession, pTab); + i64 iRowid = (pTab->bRowid ? sqlite3_column_int64(pStmt, 0) : 0); + sessionPreupdateOneChange(SQLITE_UPDATE, iRowid, pSession, pTab); } rc = sqlite3_finalize(pStmt); } - sqlite3_free(zStmt); } + sqlite3_free(zStmt); + sqlite3_free(z1); + sqlite3_free(z2); } return rc; @@ -183924,9 +221602,12 @@ SQLITE_API int sqlite3session_diff( int bHasPk = 0; int bMismatch = 0; int nCol; /* Columns in zFrom.zTbl */ + int bRowid = 0; u8 *abPK; const char **azCol = 0; - rc = sessionTableInfo(db, zFrom, zTbl, &nCol, 0, &azCol, &abPK); + rc = sessionTableInfo(0, db, zFrom, zTbl, &nCol, 0, &azCol, &abPK, + pSession->bImplicitPK ? &bRowid : 0 + ); if( rc==SQLITE_OK ){ if( pTo->nCol!=nCol ){ bMismatch = 1; @@ -183941,7 +221622,9 @@ SQLITE_API int sqlite3session_diff( } sqlite3_free((char*)azCol); if( bMismatch ){ - *pzErrMsg = sqlite3_mprintf("table schemas do not match"); + if( pzErrMsg ){ + *pzErrMsg = sqlite3_mprintf("table schemas do not match"); + } rc = SQLITE_SCHEMA; } if( bHasPk==0 ){ @@ -183951,7 +221634,7 @@ SQLITE_API int sqlite3session_diff( } if( rc==SQLITE_OK ){ - zExpr = sessionExprComparePK(pTo->nCol, + zExpr = sessionExprComparePK(pTo->nCol, zDb, zFrom, pTo->zName, pTo->azCol, pTo->abPK ); } @@ -183997,7 +221680,7 @@ SQLITE_API int sqlite3session_create( *ppSession = 0; /* Allocate and populate the new session object. */ - pNew = (sqlite3_session *)sqlite3_malloc(sizeof(sqlite3_session) + nDb + 1); + pNew = (sqlite3_session *)sqlite3_malloc64(sizeof(sqlite3_session) + nDb + 1); if( !pNew ) return SQLITE_NOMEM; memset(pNew, 0, sizeof(sqlite3_session)); pNew->db = db; @@ -184006,7 +221689,7 @@ SQLITE_API int sqlite3session_create( memcpy(pNew->zDb, zDb, nDb+1); sessionPreupdateHooks(pNew); - /* Add the new session object to the linked list of session objects + /* Add the new session object to the linked list of session objects ** attached to database handle $db. Do this under the cover of the db ** handle mutex. */ sqlite3_mutex_enter(sqlite3_db_mutex(db)); @@ -184022,7 +221705,7 @@ SQLITE_API int sqlite3session_create( ** Free the list of table objects passed as the first argument. The contents ** of the changed-rows hash tables are also deleted. */ -static void sessionDeleteTable(SessionTable *pList){ +static void sessionDeleteTable(sqlite3_session *pSession, SessionTable *pList){ SessionTable *pNext; SessionTable *pTab; @@ -184034,12 +221717,12 @@ static void sessionDeleteTable(SessionTable *pList){ SessionChange *pNextChange; for(p=pTab->apChange[i]; p; p=pNextChange){ pNextChange = p->pNext; - sqlite3_free(p); + sessionFree(pSession, p); } } - sqlite3_free((char*)pTab->azCol); /* cast works around VC++ bug */ - sqlite3_free(pTab->apChange); - sqlite3_free(pTab); + sessionFree(pSession, (char*)pTab->azCol); /* cast works around VC++ bug */ + sessionFree(pSession, pTab->apChange); + sessionFree(pSession, pTab); } } @@ -184065,11 +221748,13 @@ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession){ sqlite3_mutex_leave(sqlite3_db_mutex(db)); sqlite3ValueFree(pSession->pZeroBlob); - /* Delete all attached table objects. And the contents of their + /* Delete all attached table objects. And the contents of their ** associated hash-tables. */ - sessionDeleteTable(pSession->pTable); + sessionDeleteTable(pSession, pSession->pTable); - /* Free the session object itself. */ + /* Assert that all allocations have been freed and then free the + ** session object itself. */ + assert( pSession->nMalloc==0 ); sqlite3_free(pSession); } @@ -184077,7 +221762,7 @@ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession){ ** Set a table filter on a Session Object. */ SQLITE_API void sqlite3session_table_filter( - sqlite3_session *pSession, + sqlite3_session *pSession, int(*xFilter)(void*, const char*), void *pCtx /* First argument passed to xFilter */ ){ @@ -184116,12 +221801,13 @@ SQLITE_API int sqlite3session_attach( if( !pTab ){ /* Allocate new SessionTable object. */ - pTab = (SessionTable *)sqlite3_malloc(sizeof(SessionTable) + nName + 1); + int nByte = sizeof(SessionTable) + nName + 1; + pTab = (SessionTable*)sessionMalloc64(pSession, nByte); if( !pTab ){ rc = SQLITE_NOMEM; }else{ /* Populate the new SessionTable object and link it into the list. - ** The new object must be linked onto the end of the list, not + ** The new object must be linked onto the end of the list, not ** simply added to the start of it in order to ensure that tables ** appear in the correct order when a changeset or patchset is ** eventually generated. */ @@ -184146,15 +221832,31 @@ SQLITE_API int sqlite3session_attach( ** If successful, return zero. Otherwise, if an OOM condition is encountered, ** set *pRc to SQLITE_NOMEM and return non-zero. */ -static int sessionBufferGrow(SessionBuffer *p, int nByte, int *pRc){ - if( *pRc==SQLITE_OK && p->nAlloc-p->nBufnBuf + nByte; + if( *pRc==SQLITE_OK && nReq>p->nAlloc ){ u8 *aNew; - int nNew = p->nAlloc ? p->nAlloc : 128; + i64 nNew = p->nAlloc ? p->nAlloc : 128; + do { nNew = nNew*2; - }while( nNew<(p->nBuf+nByte) ); + }while( nNewaBuf, nNew); + /* The value of SESSION_MAX_BUFFER_SZ is copied from the implementation + ** of sqlite3_realloc64(). Allocations greater than this size in bytes + ** always fail. It is used here to ensure that this routine can always + ** allocate up to this limit - instead of up to the largest power of + ** two smaller than the limit. */ + if( nNew>SESSION_MAX_BUFFER_SZ ){ + nNew = SESSION_MAX_BUFFER_SZ; + if( nNewaBuf, nNew); if( 0==aNew ){ *pRc = SQLITE_NOMEM; }else{ @@ -184176,7 +221878,7 @@ static int sessionBufferGrow(SessionBuffer *p, int nByte, int *pRc){ static void sessionAppendValue(SessionBuffer *p, sqlite3_value *pVal, int *pRc){ int rc = *pRc; if( rc==SQLITE_OK ){ - int nByte = 0; + sqlite3_int64 nByte = 0; rc = sessionSerializeValue(0, pVal, &nByte); sessionBufferGrow(p, nByte, &rc); if( rc==SQLITE_OK ){ @@ -184189,8 +221891,8 @@ static void sessionAppendValue(SessionBuffer *p, sqlite3_value *pVal, int *pRc){ } /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is -** called. Otherwise, append a single byte to the buffer. +** This function is a no-op if *pRc is other than SQLITE_OK when it is +** called. Otherwise, append a single byte to the buffer. ** ** If an OOM condition is encountered, set *pRc to SQLITE_NOMEM before ** returning. @@ -184202,8 +221904,8 @@ static void sessionAppendByte(SessionBuffer *p, u8 v, int *pRc){ } /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is -** called. Otherwise, append a single varint to the buffer. +** This function is a no-op if *pRc is other than SQLITE_OK when it is +** called. Otherwise, append a single varint to the buffer. ** ** If an OOM condition is encountered, set *pRc to SQLITE_NOMEM before ** returning. @@ -184215,16 +221917,16 @@ static void sessionAppendVarint(SessionBuffer *p, int v, int *pRc){ } /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is -** called. Otherwise, append a blob of data to the buffer. +** This function is a no-op if *pRc is other than SQLITE_OK when it is +** called. Otherwise, append a blob of data to the buffer. ** ** If an OOM condition is encountered, set *pRc to SQLITE_NOMEM before ** returning. */ static void sessionAppendBlob( - SessionBuffer *p, - const u8 *aBlob, - int nBlob, + SessionBuffer *p, + const u8 *aBlob, + int nBlob, int *pRc ){ if( nBlob>0 && 0==sessionBufferGrow(p, nBlob, pRc) ){ @@ -184234,7 +221936,7 @@ static void sessionAppendBlob( } /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is +** This function is a no-op if *pRc is other than SQLITE_OK when it is ** called. Otherwise, append a string to the buffer. All bytes in the string ** up to (but not including) the nul-terminator are written to the buffer. ** @@ -184242,19 +221944,20 @@ static void sessionAppendBlob( ** returning. */ static void sessionAppendStr( - SessionBuffer *p, - const char *zStr, + SessionBuffer *p, + const char *zStr, int *pRc ){ int nStr = sqlite3Strlen30(zStr); - if( 0==sessionBufferGrow(p, nStr, pRc) ){ + if( 0==sessionBufferGrow(p, nStr+1, pRc) ){ memcpy(&p->aBuf[p->nBuf], zStr, nStr); p->nBuf += nStr; + p->aBuf[p->nBuf] = 0x00; } } /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is +** This function is a no-op if *pRc is other than SQLITE_OK when it is ** called. Otherwise, append the string representation of integer iVal ** to the buffer. No nul-terminator is written. ** @@ -184271,10 +221974,31 @@ static void sessionAppendInteger( sessionAppendStr(p, aBuf, pRc); } +static void sessionAppendPrintf( + SessionBuffer *p, /* Buffer to append to */ + int *pRc, + const char *zFmt, + ... +){ + if( *pRc==SQLITE_OK ){ + char *zApp = 0; + va_list ap; + va_start(ap, zFmt); + zApp = sqlite3_vmprintf(zFmt, ap); + if( zApp==0 ){ + *pRc = SQLITE_NOMEM; + }else{ + sessionAppendStr(p, zApp, pRc); + } + va_end(ap); + sqlite3_free(zApp); + } +} + /* -** This function is a no-op if *pRc is other than SQLITE_OK when it is +** This function is a no-op if *pRc is other than SQLITE_OK when it is ** called. Otherwise, append the string zStr enclosed in quotes (") and -** with any embedded quote characters escaped to the buffer. No +** with any embedded quote characters escaped to the buffer. No ** nul-terminator byte is written. ** ** If an OOM condition is encountered, set *pRc to SQLITE_NOMEM before @@ -184285,7 +222009,7 @@ static void sessionAppendIdent( const char *zStr, /* String to quote, escape and append */ int *pRc /* IN/OUT: Error code */ ){ - int nStr = sqlite3Strlen30(zStr)*2 + 2 + 1; + int nStr = sqlite3Strlen30(zStr)*2 + 2 + 2; if( 0==sessionBufferGrow(p, nStr, pRc) ){ char *zOut = (char *)&p->aBuf[p->nBuf]; const char *zIn = zStr; @@ -184296,6 +222020,7 @@ static void sessionAppendIdent( } *zOut++ = '"'; p->nBuf = (int)((u8 *)zOut - p->aBuf); + p->aBuf[p->nBuf] = 0x00; } } @@ -184347,8 +222072,8 @@ static void sessionAppendCol( /* ** -** This function appends an update change to the buffer (see the comments -** under "CHANGESET FORMAT" at the top of the file). An update change +** This function appends an update change to the buffer (see the comments +** under "CHANGESET FORMAT" at the top of the file). An update change ** consists of: ** ** 1 byte: SQLITE_UPDATE (0x17) @@ -184363,10 +222088,10 @@ static void sessionAppendCol( ** If all of the old.* values are equal to their corresponding new.* value ** (i.e. nothing has changed), then no data at all is appended to the buffer. ** -** Otherwise, the old.* record contains all primary key values and the -** original values of any fields that have been modified. The new.* record +** Otherwise, the old.* record contains all primary key values and the +** original values of any fields that have been modified. The new.* record ** contains the new values of only those fields that have been modified. -*/ +*/ static int sessionAppendUpdate( SessionBuffer *pBuf, /* Buffer to append to */ int bPatchset, /* True for "patchset", 0 for "changeset" */ @@ -184381,6 +222106,7 @@ static int sessionAppendUpdate( int i; /* Used to iterate through columns */ u8 *pCsr = p->aRecord; /* Used to iterate through old.* values */ + assert( abPK!=0 ); sessionAppendByte(pBuf, SQLITE_UPDATE, &rc); sessionAppendByte(pBuf, p->bIndirect, &rc); for(i=0; i FROM zDb.zTab WHERE (pk1, pk2,...) IS (?1, ?2,...) +** +** where is: +** +** 1 AND (?A OR ?1 IS ) AND ... +** +** for each non-pk . */ static int sessionSelectStmt( sqlite3 *db, /* Database handle */ + int bIgnoreNoop, const char *zDb, /* Database name */ const char *zTab, /* Table name */ + int bRowid, int nCol, /* Number of columns in table */ const char **azCol, /* Names of table columns */ u8 *abPK, /* PRIMARY KEY array */ @@ -184532,8 +222266,50 @@ static int sessionSelectStmt( ){ int rc = SQLITE_OK; char *zSql = 0; + const char *zSep = ""; + const char *zCols = bRowid ? SESSIONS_ROWID ", *" : "*"; int nSql = -1; + int i; + SessionBuffer nooptest = {0, 0, 0}; + SessionBuffer pkfield = {0, 0, 0}; + SessionBuffer pkvar = {0, 0, 0}; + + sessionAppendStr(&nooptest, ", 1", &rc); + + if( 0==sqlite3_stricmp("sqlite_stat1", zTab) ){ + sessionAppendStr(&nooptest, " AND (?6 OR ?3 IS stat)", &rc); + sessionAppendStr(&pkfield, "tbl, idx", &rc); + sessionAppendStr(&pkvar, + "?1, (CASE WHEN ?2=X'' THEN NULL ELSE ?2 END)", &rc + ); + zCols = "tbl, ?2, stat"; + }else{ + for(i=0; ipTable; rc==SQLITE_OK && pTab; pTab=pTab->pNext){ if( pTab->nEntry ){ const char *zName = pTab->zName; - int nCol; /* Number of columns in table */ - u8 *abPK; /* Primary key array */ + int nCol = 0; /* Number of columns in table */ + u8 *abPK = 0; /* Primary key array */ const char **azCol = 0; /* Table columns */ int i; /* Used to iterate through hash buckets */ sqlite3_stmt *pSel = 0; /* SELECT statement to query table pTab */ int nRewind = buf.nBuf; /* Initial size of write buffer */ int nNoop; /* Size of buffer after writing tbl header */ + int bRowid = 0; /* Check the table schema is still Ok. */ - rc = sessionTableInfo(db, pSession->zDb, zName, &nCol, 0, &azCol, &abPK); - if( !rc && (pTab->nCol!=nCol || memcmp(abPK, pTab->abPK, nCol)) ){ + rc = sessionTableInfo( + 0, db, pSession->zDb, zName, &nCol, 0, &azCol, &abPK, + (pSession->bImplicitPK ? &bRowid : 0) + ); + if( rc==SQLITE_OK && ( + pTab->nCol!=nCol + || pTab->bRowid!=bRowid + || memcmp(abPK, pTab->abPK, nCol) + )){ rc = SQLITE_SCHEMA; } @@ -184724,7 +222513,8 @@ static int sessionGenerateChangeset( /* Build and compile a statement to execute: */ if( rc==SQLITE_OK ){ rc = sessionSelectStmt( - db, pSession->zDb, zName, nCol, azCol, abPK, &pSel); + db, 0, pSession->zDb, zName, bRowid, nCol, azCol, abPK, &pSel + ); } nNoop = buf.nBuf; @@ -184743,6 +222533,7 @@ static int sessionGenerateChangeset( sessionAppendCol(&buf, pSel, iCol, &rc); } }else{ + assert( abPK!=0 ); /* Because sessionSelectStmt() returned ok */ rc = sessionAppendUpdate(&buf, bPatchset, pSel, p, abPK); } }else if( p->op!=SQLITE_INSERT ){ @@ -184752,12 +222543,12 @@ static int sessionGenerateChangeset( rc = sqlite3_reset(pSel); } - /* If the buffer is now larger than SESSIONS_STRM_CHUNK_SIZE, pass + /* If the buffer is now larger than sessions_strm_chunk_size, pass ** its contents to the xOutput() callback. */ - if( xOutput - && rc==SQLITE_OK - && buf.nBuf>nNoop - && buf.nBuf>SESSIONS_STRM_CHUNK_SIZE + if( xOutput + && rc==SQLITE_OK + && buf.nBuf>nNoop + && buf.nBuf>sessions_strm_chunk_size ){ rc = xOutput(pOut, (void*)buf.aBuf, buf.nBuf); nNoop = -1; @@ -184792,10 +222583,10 @@ static int sessionGenerateChangeset( } /* -** Obtain a changeset object containing all changes recorded by the +** Obtain a changeset object containing all changes recorded by the ** session object passed as the first argument. ** -** It is the responsibility of the caller to eventually free the buffer +** It is the responsibility of the caller to eventually free the buffer ** using sqlite3_free(). */ SQLITE_API int sqlite3session_changeset( @@ -184803,7 +222594,14 @@ SQLITE_API int sqlite3session_changeset( int *pnChangeset, /* OUT: Size of buffer at *ppChangeset */ void **ppChangeset /* OUT: Buffer containing changeset */ ){ - return sessionGenerateChangeset(pSession, 0, 0, 0, pnChangeset, ppChangeset); + int rc; + + if( pnChangeset==0 || ppChangeset==0 ) return SQLITE_MISUSE; + rc = sessionGenerateChangeset(pSession, 0, 0, 0, pnChangeset, ppChangeset); + assert( rc || pnChangeset==0 + || pSession->bEnableSize==0 || *pnChangeset<=pSession->nMaxChangesetSize + ); + return rc; } /* @@ -184814,6 +222612,7 @@ SQLITE_API int sqlite3session_changeset_strm( int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ){ + if( xOutput==0 ) return SQLITE_MISUSE; return sessionGenerateChangeset(pSession, 0, xOutput, pOut, 0, 0); } @@ -184825,14 +222624,15 @@ SQLITE_API int sqlite3session_patchset_strm( int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ){ + if( xOutput==0 ) return SQLITE_MISUSE; return sessionGenerateChangeset(pSession, 1, xOutput, pOut, 0, 0); } /* -** Obtain a patchset object containing all changes recorded by the +** Obtain a patchset object containing all changes recorded by the ** session object passed as the first argument. ** -** It is the responsibility of the caller to eventually free the buffer +** It is the responsibility of the caller to eventually free the buffer ** using sqlite3_free(). */ SQLITE_API int sqlite3session_patchset( @@ -184840,6 +222640,7 @@ SQLITE_API int sqlite3session_patchset( int *pnPatchset, /* OUT: Size of buffer at *ppChangeset */ void **ppPatchset /* OUT: Buffer containing changeset */ ){ + if( pnPatchset==0 || ppPatchset==0 ) return SQLITE_MISUSE; return sessionGenerateChangeset(pSession, 1, 0, 0, pnPatchset, ppPatchset); } @@ -184888,6 +222689,59 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession){ return (ret==0); } +/* +** Return the amount of heap memory in use. +*/ +SQLITE_API sqlite3_int64 sqlite3session_memory_used(sqlite3_session *pSession){ + return pSession->nMalloc; +} + +/* +** Configure the session object passed as the first argument. +*/ +SQLITE_API int sqlite3session_object_config(sqlite3_session *pSession, int op, void *pArg){ + int rc = SQLITE_OK; + switch( op ){ + case SQLITE_SESSION_OBJCONFIG_SIZE: { + int iArg = *(int*)pArg; + if( iArg>=0 ){ + if( pSession->pTable ){ + rc = SQLITE_MISUSE; + }else{ + pSession->bEnableSize = (iArg!=0); + } + } + *(int*)pArg = pSession->bEnableSize; + break; + } + + case SQLITE_SESSION_OBJCONFIG_ROWID: { + int iArg = *(int*)pArg; + if( iArg>=0 ){ + if( pSession->pTable ){ + rc = SQLITE_MISUSE; + }else{ + pSession->bImplicitPK = (iArg!=0); + } + } + *(int*)pArg = pSession->bImplicitPK; + break; + } + + default: + rc = SQLITE_MISUSE; + } + + return rc; +} + +/* +** Return the maximum size of sqlite3session_changeset() output. +*/ +SQLITE_API sqlite3_int64 sqlite3session_changeset_size(sqlite3_session *pSession){ + return pSession->nMaxChangesetSize; +} + /* ** Do the work for either sqlite3changeset_start() or start_strm(). */ @@ -184896,7 +222750,9 @@ static int sessionChangesetStart( int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn, int nChangeset, /* Size of buffer pChangeset in bytes */ - void *pChangeset /* Pointer to buffer containing changeset */ + void *pChangeset, /* Pointer to buffer containing changeset */ + int bInvert, /* True to invert changeset */ + int bSkipEmpty /* True to skip empty UPDATE changes */ ){ sqlite3_changeset_iter *pRet; /* Iterator to return */ int nByte; /* Number of bytes to allocate for iterator */ @@ -184916,6 +222772,8 @@ static int sessionChangesetStart( pRet->in.xInput = xInput; pRet->in.pIn = pIn; pRet->in.bEof = (xInput ? 0 : 1); + pRet->bInvert = bInvert; + pRet->bSkipEmpty = bSkipEmpty; /* Populate the output variable and return success. */ *pp = pRet; @@ -184930,7 +222788,16 @@ SQLITE_API int sqlite3changeset_start( int nChangeset, /* Size of buffer pChangeset in bytes */ void *pChangeset /* Pointer to buffer containing changeset */ ){ - return sessionChangesetStart(pp, 0, 0, nChangeset, pChangeset); + return sessionChangesetStart(pp, 0, 0, nChangeset, pChangeset, 0, 0); +} +SQLITE_API int sqlite3changeset_start_v2( + sqlite3_changeset_iter **pp, /* OUT: Changeset iterator handle */ + int nChangeset, /* Size of buffer pChangeset in bytes */ + void *pChangeset, /* Pointer to buffer containing changeset */ + int flags +){ + int bInvert = !!(flags & SQLITE_CHANGESETSTART_INVERT); + return sessionChangesetStart(pp, 0, 0, nChangeset, pChangeset, bInvert, 0); } /* @@ -184941,7 +222808,16 @@ SQLITE_API int sqlite3changeset_start_strm( int (*xInput)(void *pIn, void *pData, int *pnData), void *pIn ){ - return sessionChangesetStart(pp, xInput, pIn, 0, 0); + return sessionChangesetStart(pp, xInput, pIn, 0, 0, 0, 0); +} +SQLITE_API int sqlite3changeset_start_v2_strm( + sqlite3_changeset_iter **pp, /* OUT: Changeset iterator handle */ + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn, + int flags +){ + int bInvert = !!(flags & SQLITE_CHANGESETSTART_INVERT); + return sessionChangesetStart(pp, xInput, pIn, 0, 0, bInvert, 0); } /* @@ -184949,7 +222825,7 @@ SQLITE_API int sqlite3changeset_start_strm( ** object and the buffer is full, discard some data to free up space. */ static void sessionDiscardData(SessionInput *pIn){ - if( pIn->xInput && pIn->iNext>=SESSIONS_STRM_CHUNK_SIZE ){ + if( pIn->xInput && pIn->iNext>=sessions_strm_chunk_size ){ int nMove = pIn->buf.nBuf - pIn->iNext; assert( nMove>=0 ); if( nMove>0 ){ @@ -184972,7 +222848,7 @@ static int sessionInputBuffer(SessionInput *pIn, int nByte){ int rc = SQLITE_OK; if( pIn->xInput ){ while( !pIn->bEof && (pIn->iNext+nByte)>=pIn->nData && rc==SQLITE_OK ){ - int nNew = SESSIONS_STRM_CHUNK_SIZE; + int nNew = sessions_strm_chunk_size; if( pIn->bNoDiscard==0 ) sessionDiscardData(pIn); if( SQLITE_OK==sessionBufferGrow(&pIn->buf, nNew, &rc) ){ @@ -185018,7 +222894,7 @@ static void sessionSkipRecord( /* ** This function sets the value of the sqlite3_value object passed as the -** first argument to a copy of the string or blob held in the aData[] +** first argument to a copy of the string or blob held in the aData[] ** buffer. SQLITE_OK is returned if successful, or SQLITE_NOMEM if an OOM ** error occurs. */ @@ -185029,10 +222905,10 @@ static int sessionValueSetStr( u8 enc /* String encoding (0 for blobs) */ ){ /* In theory this code could just pass SQLITE_TRANSIENT as the final - ** argument to sqlite3ValueSetStr() and have the copy created + ** argument to sqlite3ValueSetStr() and have the copy created ** automatically. But doing so makes it difficult to detect any OOM ** error. Hence the code to create the copy externally. */ - u8 *aCopy = sqlite3_malloc(nData+1); + u8 *aCopy = sqlite3_malloc64((sqlite3_int64)nData+1); if( aCopy==0 ) return SQLITE_NOMEM; memcpy(aCopy, aData, nData); sqlite3ValueSetStr(pVal, nData, (char*)aCopy, enc, sqlite3_free); @@ -185067,11 +222943,14 @@ static int sessionReadRecord( SessionInput *pIn, /* Input data */ int nCol, /* Number of values in record */ u8 *abPK, /* Array of primary key flags, or NULL */ - sqlite3_value **apOut /* Write values to this array */ + sqlite3_value **apOut, /* Write values to this array */ + int *pbEmpty ){ int i; /* Used to iterate through columns */ int rc = SQLITE_OK; + assert( pbEmpty==0 || *pbEmpty==0 ); + if( pbEmpty ) *pbEmpty = 1; for(i=0; iaData[pIn->iNext++]; assert( apOut[i]==0 ); if( eType ){ + if( pbEmpty ) *pbEmpty = 0; apOut[i] = sqlite3ValueNew(0); if( !apOut[i] ) rc = SQLITE_NOMEM; } @@ -185130,7 +223010,7 @@ static int sessionReadRecord( ** + array of PK flags (1 byte per column), ** + table name (nul terminated). ** -** This function ensures that all of the above is present in the input +** This function ensures that all of the above is present in the input ** buffer (i.e. that it can be accessed without any calls to xInput()). ** If successful, SQLITE_OK is returned. Otherwise, an SQLite error code. ** The input pointer is not moved. @@ -185144,11 +223024,11 @@ static int sessionChangesetBufferTblhdr(SessionInput *pIn, int *pnByte){ if( rc==SQLITE_OK ){ nRead += sessionVarintGet(&pIn->aData[pIn->iNext + nRead], &nCol); /* The hard upper limit for the number of columns in an SQLite - ** database table is, according to sqliteLimit.h, 32676. So - ** consider any table-header that purports to have more than 65536 - ** columns to be corrupt. This is convenient because otherwise, - ** if the (nCol>65536) condition below were omitted, a sufficiently - ** large value for nCol may cause nRead to wrap around and become + ** database table is, according to sqliteLimit.h, 32676. So + ** consider any table-header that purports to have more than 65536 + ** columns to be corrupt. This is convenient because otherwise, + ** if the (nCol>65536) condition below were omitted, a sufficiently + ** large value for nCol may cause nRead to wrap around and become ** negative. Leading to a crash. */ if( nCol<0 || nCol>65536 ){ rc = SQLITE_CORRUPT_BKPT; @@ -185213,8 +223093,8 @@ static int sessionChangesetBufferRecord( ** + array of PK flags (1 byte per column), ** + table name (nul terminated). ** -** This function decodes the table-header and populates the p->nCol, -** p->zTab and p->abPK[] variables accordingly. The p->apValue[] array is +** This function decodes the table-header and populates the p->nCol, +** p->zTab and p->abPK[] variables accordingly. The p->apValue[] array is ** also allocated or resized according to the new value of p->nCol. The ** input pointer is left pointing to the byte following the table header. ** @@ -185244,44 +223124,45 @@ static int sessionChangesetReadTblhdr(sqlite3_changeset_iter *p){ } if( rc==SQLITE_OK ){ - int iPK = sizeof(sqlite3_value*)*p->nCol*2; + size_t iPK = sizeof(sqlite3_value*)*p->nCol*2; memset(p->tblhdr.aBuf, 0, iPK); memcpy(&p->tblhdr.aBuf[iPK], &p->in.aData[p->in.iNext], nCopy); p->in.iNext += nCopy; } p->apValue = (sqlite3_value**)p->tblhdr.aBuf; - p->abPK = (u8*)&p->apValue[p->nCol*2]; - p->zTab = (char*)&p->abPK[p->nCol]; + if( p->apValue==0 ){ + p->abPK = 0; + p->zTab = 0; + }else{ + p->abPK = (u8*)&p->apValue[p->nCol*2]; + p->zTab = p->abPK ? (char*)&p->abPK[p->nCol] : 0; + } return (p->rc = rc); } /* -** Advance the changeset iterator to the next change. +** Advance the changeset iterator to the next change. The differences between +** this function and sessionChangesetNext() are that ** -** If both paRec and pnRec are NULL, then this function works like the public -** API sqlite3changeset_next(). If SQLITE_ROW is returned, then the -** sqlite3changeset_new() and old() APIs may be used to query for values. +** * If pbEmpty is not NULL and the change is a no-op UPDATE (an UPDATE +** that modifies no columns), this function sets (*pbEmpty) to 1. ** -** Otherwise, if paRec and pnRec are not NULL, then a pointer to the change -** record is written to *paRec before returning and the number of bytes in -** the record to *pnRec. -** -** Either way, this function returns SQLITE_ROW if the iterator is -** successfully advanced to the next change in the changeset, an SQLite -** error code if an error occurs, or SQLITE_DONE if there are no further -** changes in the changeset. +** * If the iterator is configured to skip no-op UPDATEs, +** sessionChangesetNext() does that. This function does not. */ -static int sessionChangesetNext( +static int sessionChangesetNextOne( sqlite3_changeset_iter *p, /* Changeset iterator */ u8 **paRec, /* If non-NULL, store record pointer here */ int *pnRec, /* If non-NULL, store size of record here */ - int *pbNew /* If non-NULL, true if new table */ + int *pbNew, /* If non-NULL, true if new table */ + int *pbEmpty ){ int i; u8 op; assert( (paRec==0 && pnRec==0) || (paRec && pnRec) ); + assert( pbEmpty==0 || *pbEmpty==0 ); /* If the iterator is in the error-state, return immediately. */ if( p->rc!=SQLITE_OK ) return p->rc; @@ -185320,10 +223201,10 @@ static int sessionChangesetNext( op = p->in.aData[p->in.iNext++]; } - if( p->zTab==0 ){ + if( p->zTab==0 || (p->bPatchset && p->bInvert) ){ /* The first record in the changeset is not a table header. Must be a ** corrupt changeset. */ - assert( p->in.iNext==1 ); + assert( p->in.iNext==1 || p->zTab ); return (p->rc = SQLITE_CORRUPT_BKPT); } @@ -185333,7 +223214,7 @@ static int sessionChangesetNext( return (p->rc = SQLITE_CORRUPT_BKPT); } - if( paRec ){ + if( paRec ){ int nVal; /* Number of values to buffer */ if( p->bPatchset==0 && op==SQLITE_UPDATE ){ nVal = p->nCol * 2; @@ -185348,39 +223229,92 @@ static int sessionChangesetNext( *paRec = &p->in.aData[p->in.iNext]; p->in.iNext += *pnRec; }else{ + sqlite3_value **apOld = (p->bInvert ? &p->apValue[p->nCol] : p->apValue); + sqlite3_value **apNew = (p->bInvert ? p->apValue : &p->apValue[p->nCol]); /* If this is an UPDATE or DELETE, read the old.* record. */ if( p->op!=SQLITE_INSERT && (p->bPatchset==0 || p->op==SQLITE_DELETE) ){ u8 *abPK = p->bPatchset ? p->abPK : 0; - p->rc = sessionReadRecord(&p->in, p->nCol, abPK, p->apValue); + p->rc = sessionReadRecord(&p->in, p->nCol, abPK, apOld, 0); if( p->rc!=SQLITE_OK ) return p->rc; } /* If this is an INSERT or UPDATE, read the new.* record. */ if( p->op!=SQLITE_DELETE ){ - p->rc = sessionReadRecord(&p->in, p->nCol, 0, &p->apValue[p->nCol]); + p->rc = sessionReadRecord(&p->in, p->nCol, 0, apNew, pbEmpty); if( p->rc!=SQLITE_OK ) return p->rc; } - if( p->bPatchset && p->op==SQLITE_UPDATE ){ + if( (p->bPatchset || p->bInvert) && p->op==SQLITE_UPDATE ){ /* If this is an UPDATE that is part of a patchset, then all PK and ** modified fields are present in the new.* record. The old.* record ** is currently completely empty. This block shifts the PK fields from ** new.* to old.*, to accommodate the code that reads these arrays. */ for(i=0; inCol; i++){ - assert( p->apValue[i]==0 ); + assert( p->bPatchset==0 || p->apValue[i]==0 ); if( p->abPK[i] ){ + assert( p->apValue[i]==0 ); p->apValue[i] = p->apValue[i+p->nCol]; if( p->apValue[i]==0 ) return (p->rc = SQLITE_CORRUPT_BKPT); p->apValue[i+p->nCol] = 0; } } + }else if( p->bInvert ){ + if( p->op==SQLITE_INSERT ) p->op = SQLITE_DELETE; + else if( p->op==SQLITE_DELETE ) p->op = SQLITE_INSERT; + } + + /* If this is an UPDATE that is part of a changeset, then check that + ** there are no fields in the old.* record that are not (a) PK fields, + ** or (b) also present in the new.* record. + ** + ** Such records are technically corrupt, but the rebaser was at one + ** point generating them. Under most circumstances this is benign, but + ** can cause spurious SQLITE_RANGE errors when applying the changeset. */ + if( p->bPatchset==0 && p->op==SQLITE_UPDATE){ + for(i=0; inCol; i++){ + if( p->abPK[i]==0 && p->apValue[i+p->nCol]==0 ){ + sqlite3ValueFree(p->apValue[i]); + p->apValue[i] = 0; + } + } } } return SQLITE_ROW; } +/* +** Advance the changeset iterator to the next change. +** +** If both paRec and pnRec are NULL, then this function works like the public +** API sqlite3changeset_next(). If SQLITE_ROW is returned, then the +** sqlite3changeset_new() and old() APIs may be used to query for values. +** +** Otherwise, if paRec and pnRec are not NULL, then a pointer to the change +** record is written to *paRec before returning and the number of bytes in +** the record to *pnRec. +** +** Either way, this function returns SQLITE_ROW if the iterator is +** successfully advanced to the next change in the changeset, an SQLite +** error code if an error occurs, or SQLITE_DONE if there are no further +** changes in the changeset. +*/ +static int sessionChangesetNext( + sqlite3_changeset_iter *p, /* Changeset iterator */ + u8 **paRec, /* If non-NULL, store record pointer here */ + int *pnRec, /* If non-NULL, store size of record here */ + int *pbNew /* If non-NULL, true if new table */ +){ + int bEmpty; + int rc; + do { + bEmpty = 0; + rc = sessionChangesetNextOne(p, paRec, pnRec, pbNew, &bEmpty); + }while( rc==SQLITE_ROW && p->bSkipEmpty && bEmpty); + return rc; +} + /* ** Advance an iterator created by sqlite3changeset_start() to the next ** change in the changeset. This function may return SQLITE_ROW, SQLITE_DONE @@ -185494,7 +223428,7 @@ SQLITE_API int sqlite3changeset_new( /* ** This function may only be called with a changeset iterator that has been -** passed to an SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT +** passed to an SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT ** conflict-handler function. Otherwise, SQLITE_MISUSE is returned. ** ** If successful, *ppValue is set to point to an sqlite3_value structure @@ -185639,7 +223573,7 @@ static int sessionChangesetInvert( int iCol; if( 0==apVal ){ - apVal = (sqlite3_value **)sqlite3_malloc(sizeof(apVal[0])*nCol*2); + apVal = (sqlite3_value **)sqlite3_malloc64(sizeof(apVal[0])*nCol*2); if( 0==apVal ){ rc = SQLITE_NOMEM; goto finished_invert; @@ -185653,9 +223587,9 @@ static int sessionChangesetInvert( /* Read the old.* and new.* records for the update change. */ pInput->iNext += 2; - rc = sessionReadRecord(pInput, nCol, 0, &apVal[0]); + rc = sessionReadRecord(pInput, nCol, 0, &apVal[0], 0); if( rc==SQLITE_OK ){ - rc = sessionReadRecord(pInput, nCol, 0, &apVal[nCol]); + rc = sessionReadRecord(pInput, nCol, 0, &apVal[nCol], 0); } /* Write the new old.* record. Consists of the PK columns from the @@ -185691,7 +223625,7 @@ static int sessionChangesetInvert( } assert( rc==SQLITE_OK ); - if( xOutput && sOut.nBuf>=SESSIONS_STRM_CHUNK_SIZE ){ + if( xOutput && sOut.nBuf>=sessions_strm_chunk_size ){ rc = xOutput(pOut, sOut.aBuf, sOut.nBuf); sOut.nBuf = 0; if( rc!=SQLITE_OK ) goto finished_invert; @@ -185699,11 +223633,11 @@ static int sessionChangesetInvert( } assert( rc==SQLITE_OK ); - if( pnInverted ){ + if( pnInverted && ALWAYS(ppInverted) ){ *pnInverted = sOut.nBuf; *ppInverted = sOut.aBuf; sOut.aBuf = 0; - }else if( sOut.nBuf>0 ){ + }else if( sOut.nBuf>0 && ALWAYS(xOutput!=0) ){ rc = xOutput(pOut, sOut.aBuf, sOut.nBuf); } @@ -185756,23 +223690,197 @@ SQLITE_API int sqlite3changeset_invert_strm( return rc; } + +typedef struct SessionUpdate SessionUpdate; +struct SessionUpdate { + sqlite3_stmt *pStmt; + u32 *aMask; + SessionUpdate *pNext; +}; + typedef struct SessionApplyCtx SessionApplyCtx; struct SessionApplyCtx { sqlite3 *db; sqlite3_stmt *pDelete; /* DELETE statement */ - sqlite3_stmt *pUpdate; /* UPDATE statement */ sqlite3_stmt *pInsert; /* INSERT statement */ sqlite3_stmt *pSelect; /* SELECT statement */ int nCol; /* Size of azCol[] and abPK[] arrays */ const char **azCol; /* Array of column names */ u8 *abPK; /* Boolean array - true if column is in PK */ + u32 *aUpdateMask; /* Used by sessionUpdateFind */ + SessionUpdate *pUp; int bStat1; /* True if table is sqlite_stat1 */ int bDeferConstraints; /* True to defer constraints */ + int bInvertConstraints; /* Invert when iterating constraints buffer */ SessionBuffer constraints; /* Deferred constraints are stored here */ SessionBuffer rebase; /* Rebase information (if any) here */ - int bRebaseStarted; /* If table header is already in rebase */ + u8 bRebaseStarted; /* If table header is already in rebase */ + u8 bRebase; /* True to collect rebase information */ + u8 bIgnoreNoop; /* True to ignore no-op conflicts */ + int bRowid; }; +/* Number of prepared UPDATE statements to cache. */ +#define SESSION_UPDATE_CACHE_SZ 12 + +/* +** Find a prepared UPDATE statement suitable for the UPDATE step currently +** being visited by the iterator. The UPDATE is of the form: +** +** UPDATE tbl SET col = ?, col2 = ? WHERE pk1 IS ? AND pk2 IS ? +*/ +static int sessionUpdateFind( + sqlite3_changeset_iter *pIter, + SessionApplyCtx *p, + int bPatchset, + sqlite3_stmt **ppStmt +){ + int rc = SQLITE_OK; + SessionUpdate *pUp = 0; + int nCol = pIter->nCol; + int nU32 = (pIter->nCol+33)/32; + int ii; + + if( p->aUpdateMask==0 ){ + p->aUpdateMask = sqlite3_malloc(nU32*sizeof(u32)); + if( p->aUpdateMask==0 ){ + rc = SQLITE_NOMEM; + } + } + + if( rc==SQLITE_OK ){ + memset(p->aUpdateMask, 0, nU32*sizeof(u32)); + rc = SQLITE_CORRUPT; + for(ii=0; iinCol; ii++){ + if( sessionChangesetNew(pIter, ii) ){ + p->aUpdateMask[ii/32] |= (1<<(ii%32)); + rc = SQLITE_OK; + } + } + } + + if( rc==SQLITE_OK ){ + if( bPatchset ) p->aUpdateMask[nCol/32] |= (1<<(nCol%32)); + + if( p->pUp ){ + int nUp = 0; + SessionUpdate **pp = &p->pUp; + while( 1 ){ + nUp++; + if( 0==memcmp(p->aUpdateMask, (*pp)->aMask, nU32*sizeof(u32)) ){ + pUp = *pp; + *pp = pUp->pNext; + pUp->pNext = p->pUp; + p->pUp = pUp; + break; + } + + if( (*pp)->pNext ){ + pp = &(*pp)->pNext; + }else{ + if( nUp>=SESSION_UPDATE_CACHE_SZ ){ + sqlite3_finalize((*pp)->pStmt); + sqlite3_free(*pp); + *pp = 0; + } + break; + } + } + } + + if( pUp==0 ){ + int nByte = sizeof(SessionUpdate) * nU32*sizeof(u32); + int bStat1 = (sqlite3_stricmp(pIter->zTab, "sqlite_stat1")==0); + pUp = (SessionUpdate*)sqlite3_malloc(nByte); + if( pUp==0 ){ + rc = SQLITE_NOMEM; + }else{ + const char *zSep = ""; + SessionBuffer buf; + + memset(&buf, 0, sizeof(buf)); + pUp->aMask = (u32*)&pUp[1]; + memcpy(pUp->aMask, p->aUpdateMask, nU32*sizeof(u32)); + + sessionAppendStr(&buf, "UPDATE main.", &rc); + sessionAppendIdent(&buf, pIter->zTab, &rc); + sessionAppendStr(&buf, " SET ", &rc); + + /* Create the assignments part of the UPDATE */ + for(ii=0; iinCol; ii++){ + if( p->abPK[ii]==0 && sessionChangesetNew(pIter, ii) ){ + sessionAppendStr(&buf, zSep, &rc); + sessionAppendIdent(&buf, p->azCol[ii], &rc); + sessionAppendStr(&buf, " = ?", &rc); + sessionAppendInteger(&buf, ii*2+1, &rc); + zSep = ", "; + } + } + + /* Create the WHERE clause part of the UPDATE */ + zSep = ""; + sessionAppendStr(&buf, " WHERE ", &rc); + for(ii=0; iinCol; ii++){ + if( p->abPK[ii] || (bPatchset==0 && sessionChangesetOld(pIter, ii)) ){ + sessionAppendStr(&buf, zSep, &rc); + if( bStat1 && ii==1 ){ + assert( sqlite3_stricmp(p->azCol[ii], "idx")==0 ); + sessionAppendStr(&buf, + "idx IS CASE " + "WHEN length(?4)=0 AND typeof(?4)='blob' THEN NULL " + "ELSE ?4 END ", &rc + ); + }else{ + sessionAppendIdent(&buf, p->azCol[ii], &rc); + sessionAppendStr(&buf, " IS ?", &rc); + sessionAppendInteger(&buf, ii*2+2, &rc); + } + zSep = " AND "; + } + } + + if( rc==SQLITE_OK ){ + char *zSql = (char*)buf.aBuf; + rc = sqlite3_prepare_v2(p->db, zSql, buf.nBuf, &pUp->pStmt, 0); + } + + if( rc!=SQLITE_OK ){ + sqlite3_free(pUp); + pUp = 0; + }else{ + pUp->pNext = p->pUp; + p->pUp = pUp; + } + sqlite3_free(buf.aBuf); + } + } + } + + assert( (rc==SQLITE_OK)==(pUp!=0) ); + if( pUp ){ + *ppStmt = pUp->pStmt; + }else{ + *ppStmt = 0; + } + return rc; +} + +/* +** Free all cached UPDATE statements. +*/ +static void sessionUpdateFree(SessionApplyCtx *p){ + SessionUpdate *pUp; + SessionUpdate *pNext; + for(pUp=p->pUp; pUp; pUp=pNext){ + pNext = pUp->pNext; + sqlite3_finalize(pUp->pStmt); + sqlite3_free(pUp); + } + p->pUp = 0; + sqlite3_free(p->aUpdateMask); + p->aUpdateMask = 0; +} + /* ** Formulate a statement to DELETE a row from database db. Assuming a table ** structure like this: @@ -185801,7 +223909,7 @@ static int sessionDeleteRow( SessionBuffer buf = {0, 0, 0}; int nPk = 0; - sessionAppendStr(&buf, "DELETE FROM ", &rc); + sessionAppendStr(&buf, "DELETE FROM main.", &rc); sessionAppendIdent(&buf, zTab, &rc); sessionAppendStr(&buf, " WHERE ", &rc); @@ -185842,103 +223950,6 @@ static int sessionDeleteRow( return rc; } -/* -** Formulate and prepare a statement to UPDATE a row from database db. -** Assuming a table structure like this: -** -** CREATE TABLE x(a, b, c, d, PRIMARY KEY(a, c)); -** -** The UPDATE statement looks like this: -** -** UPDATE x SET -** a = CASE WHEN ?2 THEN ?3 ELSE a END, -** b = CASE WHEN ?5 THEN ?6 ELSE b END, -** c = CASE WHEN ?8 THEN ?9 ELSE c END, -** d = CASE WHEN ?11 THEN ?12 ELSE d END -** WHERE a = ?1 AND c = ?7 AND (?13 OR -** (?5==0 OR b IS ?4) AND (?11==0 OR d IS ?10) AND -** ) -** -** For each column in the table, there are three variables to bind: -** -** ?(i*3+1) The old.* value of the column, if any. -** ?(i*3+2) A boolean flag indicating that the value is being modified. -** ?(i*3+3) The new.* value of the column, if any. -** -** Also, a boolean flag that, if set to true, causes the statement to update -** a row even if the non-PK values do not match. This is required if the -** conflict-handler is invoked with CHANGESET_DATA and returns -** CHANGESET_REPLACE. This is variable "?(nCol*3+1)". -** -** If successful, SQLITE_OK is returned and SessionApplyCtx.pUpdate is left -** pointing to the prepared version of the SQL statement. -*/ -static int sessionUpdateRow( - sqlite3 *db, /* Database handle */ - const char *zTab, /* Table name */ - SessionApplyCtx *p /* Session changeset-apply context */ -){ - int rc = SQLITE_OK; - int i; - const char *zSep = ""; - SessionBuffer buf = {0, 0, 0}; - - /* Append "UPDATE tbl SET " */ - sessionAppendStr(&buf, "UPDATE ", &rc); - sessionAppendIdent(&buf, zTab, &rc); - sessionAppendStr(&buf, " SET ", &rc); - - /* Append the assignments */ - for(i=0; inCol; i++){ - sessionAppendStr(&buf, zSep, &rc); - sessionAppendIdent(&buf, p->azCol[i], &rc); - sessionAppendStr(&buf, " = CASE WHEN ?", &rc); - sessionAppendInteger(&buf, i*3+2, &rc); - sessionAppendStr(&buf, " THEN ?", &rc); - sessionAppendInteger(&buf, i*3+3, &rc); - sessionAppendStr(&buf, " ELSE ", &rc); - sessionAppendIdent(&buf, p->azCol[i], &rc); - sessionAppendStr(&buf, " END", &rc); - zSep = ", "; - } - - /* Append the PK part of the WHERE clause */ - sessionAppendStr(&buf, " WHERE ", &rc); - for(i=0; inCol; i++){ - if( p->abPK[i] ){ - sessionAppendIdent(&buf, p->azCol[i], &rc); - sessionAppendStr(&buf, " = ?", &rc); - sessionAppendInteger(&buf, i*3+1, &rc); - sessionAppendStr(&buf, " AND ", &rc); - } - } - - /* Append the non-PK part of the WHERE clause */ - sessionAppendStr(&buf, " (?", &rc); - sessionAppendInteger(&buf, p->nCol*3+1, &rc); - sessionAppendStr(&buf, " OR 1", &rc); - for(i=0; inCol; i++){ - if( !p->abPK[i] ){ - sessionAppendStr(&buf, " AND (?", &rc); - sessionAppendInteger(&buf, i*3+2, &rc); - sessionAppendStr(&buf, "=0 OR ", &rc); - sessionAppendIdent(&buf, p->azCol[i], &rc); - sessionAppendStr(&buf, " IS ?", &rc); - sessionAppendInteger(&buf, i*3+1, &rc); - sessionAppendStr(&buf, ")", &rc); - } - } - sessionAppendStr(&buf, ")", &rc); - - if( rc==SQLITE_OK ){ - rc = sqlite3_prepare_v2(db, (char *)buf.aBuf, buf.nBuf, &p->pUpdate, 0); - } - sqlite3_free(buf.aBuf); - - return rc; -} - - /* ** Formulate and prepare an SQL statement to query table zTab by primary ** key. Assuming the following table structure: @@ -185957,8 +223968,10 @@ static int sessionSelectRow( const char *zTab, /* Table name */ SessionApplyCtx *p /* Session changeset-apply context */ ){ - return sessionSelectStmt( - db, "main", zTab, p->nCol, p->azCol, p->abPK, &p->pSelect); + /* TODO */ + return sessionSelectStmt(db, p->bIgnoreNoop, + "main", zTab, p->bRowid, p->nCol, p->azCol, p->abPK, &p->pSelect + ); } /* @@ -186007,7 +224020,7 @@ static int sessionPrepare(sqlite3 *db, sqlite3_stmt **pp, const char *zSql){ /* ** Prepare statements for applying changes to the sqlite_stat1 table. ** These are similar to those created by sessionSelectRow(), -** sessionInsertRow(), sessionUpdateRow() and sessionDeleteRow() for +** sessionInsertRow(), sessionUpdateRow() and sessionDeleteRow() for ** other tables. */ static int sessionStat1Sql(sqlite3 *db, SessionApplyCtx *p){ @@ -186019,17 +224032,6 @@ static int sessionStat1Sql(sqlite3 *db, SessionApplyCtx *p){ "?3)" ); } - if( rc==SQLITE_OK ){ - rc = sessionPrepare(db, &p->pUpdate, - "UPDATE main.sqlite_stat1 SET " - "tbl = CASE WHEN ?2 THEN ?3 ELSE tbl END, " - "idx = CASE WHEN ?5 THEN ?6 ELSE idx END, " - "stat = CASE WHEN ?8 THEN ?9 ELSE stat END " - "WHERE tbl=?1 AND idx IS " - "CASE WHEN length(?4)=0 AND typeof(?4)='blob' THEN NULL ELSE ?4 END " - "AND (?10 OR ?8=0 OR stat IS ?7)" - ); - } if( rc==SQLITE_OK ){ rc = sessionPrepare(db, &p->pDelete, "DELETE FROM main.sqlite_stat1 WHERE tbl=?1 AND idx IS " @@ -186041,7 +224043,7 @@ static int sessionStat1Sql(sqlite3 *db, SessionApplyCtx *p){ } /* -** A wrapper around sqlite3_bind_value() that detects an extra problem. +** A wrapper around sqlite3_bind_value() that detects an extra problem. ** See comments in the body of this function for details. */ static int sessionBindValue( @@ -186064,15 +224066,15 @@ static int sessionBindValue( } /* -** Iterator pIter must point to an SQLITE_INSERT entry. This function +** Iterator pIter must point to an SQLITE_INSERT entry. This function ** transfers new.* values from the current iterator entry to statement ** pStmt. The table being inserted into has nCol columns. ** -** New.* value $i from the iterator is bound to variable ($i+1) of +** New.* value $i from the iterator is bound to variable ($i+1) of ** statement pStmt. If parameter abPK is NULL, all values from 0 to (nCol-1) ** are transfered to the statement. Otherwise, if abPK is not NULL, it points -** to an array nCol elements in size. In this case only those values for -** which abPK[$i] is true are read from the iterator and bound to the +** to an array nCol elements in size. In this case only those values for +** which abPK[$i] is true are read from the iterator and bound to the ** statement. ** ** An SQLite error code is returned if an error occurs. Otherwise, SQLITE_OK. @@ -186088,14 +224090,14 @@ static int sessionBindRow( int rc = SQLITE_OK; /* Neither sqlite3changeset_old or sqlite3changeset_new can fail if the - ** argument iterator points to a suitable entry. Make sure that xValue - ** is one of these to guarantee that it is safe to ignore the return + ** argument iterator points to a suitable entry. Make sure that xValue + ** is one of these to guarantee that it is safe to ignore the return ** in the code below. */ assert( xValue==sqlite3changeset_old || xValue==sqlite3changeset_new ); for(i=0; rc==SQLITE_OK && ipSelect; int rc; /* Return code */ int nCol; /* Number of columns in table */ int op; /* Changset operation (SQLITE_UPDATE etc.) */ const char *zDummy; /* Unused */ + sqlite3_clear_bindings(pSelect); sqlite3changeset_op(pIter, &zDummy, &nCol, &op, 0); - rc = sessionBindRow(pIter, + rc = sessionBindRow(pIter, op==SQLITE_INSERT ? sqlite3changeset_new : sqlite3changeset_old, - nCol, abPK, pSelect + nCol, p->abPK, pSelect ); + if( op!=SQLITE_DELETE && p->bIgnoreNoop ){ + int ii; + for(ii=0; rc==SQLITE_OK && iiabPK[ii]==0 ){ + sqlite3_value *pVal = 0; + sqlite3changeset_new(pIter, ii, &pVal); + sqlite3_bind_int(pSelect, ii+1+nCol, (pVal==0)); + if( pVal ) rc = sessionBindValue(pSelect, ii+1, pVal); + } + } + } + if( rc==SQLITE_OK ){ rc = sqlite3_step(pSelect); if( rc!=SQLITE_ROW ) rc = sqlite3_reset(pSelect); @@ -186152,10 +224166,10 @@ static int sessionSeekToRow( } /* -** This function is called from within sqlite3changset_apply_v2() when +** This function is called from within sqlite3changeset_apply_v2() when ** a conflict is encountered and resolved using conflict resolution ** mode eType (either SQLITE_CHANGESET_OMIT or SQLITE_CHANGESET_REPLACE).. -** It adds a conflict resolution record to the buffer in +** It adds a conflict resolution record to the buffer in ** SessionApplyCtx.rebase, which will eventually be returned to the caller ** of apply_v2() as the "rebase" buffer. ** @@ -186167,35 +224181,36 @@ static int sessionRebaseAdd( sqlite3_changeset_iter *pIter /* Iterator pointing at current change */ ){ int rc = SQLITE_OK; - int i; - int eOp = pIter->op; - if( p->bRebaseStarted==0 ){ - /* Append a table-header to the rebase buffer */ - const char *zTab = pIter->zTab; - sessionAppendByte(&p->rebase, 'T', &rc); - sessionAppendVarint(&p->rebase, p->nCol, &rc); - sessionAppendBlob(&p->rebase, p->abPK, p->nCol, &rc); - sessionAppendBlob(&p->rebase, (u8*)zTab, (int)strlen(zTab)+1, &rc); - p->bRebaseStarted = 1; - } - - assert( eType==SQLITE_CHANGESET_REPLACE||eType==SQLITE_CHANGESET_OMIT ); - assert( eOp==SQLITE_DELETE || eOp==SQLITE_INSERT || eOp==SQLITE_UPDATE ); - - sessionAppendByte(&p->rebase, - (eOp==SQLITE_DELETE ? SQLITE_DELETE : SQLITE_INSERT), &rc - ); - sessionAppendByte(&p->rebase, (eType==SQLITE_CHANGESET_REPLACE), &rc); - for(i=0; inCol; i++){ - sqlite3_value *pVal = 0; - if( eOp==SQLITE_DELETE || (eOp==SQLITE_UPDATE && p->abPK[i]) ){ - sqlite3changeset_old(pIter, i, &pVal); - }else{ - sqlite3changeset_new(pIter, i, &pVal); + if( p->bRebase ){ + int i; + int eOp = pIter->op; + if( p->bRebaseStarted==0 ){ + /* Append a table-header to the rebase buffer */ + const char *zTab = pIter->zTab; + sessionAppendByte(&p->rebase, 'T', &rc); + sessionAppendVarint(&p->rebase, p->nCol, &rc); + sessionAppendBlob(&p->rebase, p->abPK, p->nCol, &rc); + sessionAppendBlob(&p->rebase, (u8*)zTab, (int)strlen(zTab)+1, &rc); + p->bRebaseStarted = 1; } - sessionAppendValue(&p->rebase, pVal, &rc); - } + assert( eType==SQLITE_CHANGESET_REPLACE||eType==SQLITE_CHANGESET_OMIT ); + assert( eOp==SQLITE_DELETE || eOp==SQLITE_INSERT || eOp==SQLITE_UPDATE ); + + sessionAppendByte(&p->rebase, + (eOp==SQLITE_DELETE ? SQLITE_DELETE : SQLITE_INSERT), &rc + ); + sessionAppendByte(&p->rebase, (eType==SQLITE_CHANGESET_REPLACE), &rc); + for(i=0; inCol; i++){ + sqlite3_value *pVal = 0; + if( eOp==SQLITE_DELETE || (eOp==SQLITE_UPDATE && p->abPK[i]) ){ + sqlite3changeset_old(pIter, i, &pVal); + }else{ + sqlite3changeset_new(pIter, i, &pVal); + } + sessionAppendValue(&p->rebase, pVal, &rc); + } + } return rc; } @@ -186230,7 +224245,7 @@ static int sessionRebaseAdd( ** is set to non-zero before returning SQLITE_OK. ** ** If the conflict handler returns SQLITE_CHANGESET_ABORT, SQLITE_ABORT is -** returned. Or, if the conflict handler returns an invalid value, +** returned. Or, if the conflict handler returns an invalid value, ** SQLITE_MISUSE. If the conflict handler returns SQLITE_CHANGESET_OMIT, ** this function returns SQLITE_OK. */ @@ -186256,16 +224271,22 @@ static int sessionConflictHandler( /* Bind the new.* PRIMARY KEY values to the SELECT statement. */ if( pbReplace ){ - rc = sessionSeekToRow(p->db, pIter, p->abPK, p->pSelect); + rc = sessionSeekToRow(pIter, p); }else{ rc = SQLITE_OK; } if( rc==SQLITE_ROW ){ /* There exists another row with the new.* primary key. */ - pIter->pConflict = p->pSelect; - res = xConflict(pCtx, eType, pIter); - pIter->pConflict = 0; + if( p->bIgnoreNoop + && sqlite3_column_int(p->pSelect, sqlite3_column_count(p->pSelect)-1) + ){ + res = SQLITE_CHANGESET_OMIT; + }else{ + pIter->pConflict = p->pSelect; + res = xConflict(pCtx, eType, pIter); + pIter->pConflict = 0; + } rc = sqlite3_reset(p->pSelect); }else if( rc==SQLITE_OK ){ if( p->bDeferConstraints && eType==SQLITE_CHANGESET_CONFLICT ){ @@ -186320,16 +224341,16 @@ static int sessionConflictHandler( ** to true before returning. In this case the caller will invoke this function ** again, this time with pbRetry set to NULL. ** -** If argument pbReplace is NULL and a CHANGESET_CONFLICT conflict is +** If argument pbReplace is NULL and a CHANGESET_CONFLICT conflict is ** encountered invoke the conflict handler with CHANGESET_CONSTRAINT instead. ** Or, if pbReplace is not NULL, invoke it with CHANGESET_CONFLICT. If such ** an invocation returns SQLITE_CHANGESET_REPLACE, set *pbReplace to true ** before retrying. In this case the caller attempts to remove the conflicting -** row before invoking this function again, this time with pbReplace set +** row before invoking this function again, this time with pbReplace set ** to NULL. ** ** If any conflict handler returns SQLITE_CHANGESET_ABORT, this function -** returns SQLITE_ABORT. Otherwise, if no error occurs, SQLITE_OK is +** returns SQLITE_ABORT. Otherwise, if no error occurs, SQLITE_OK is ** returned. */ static int sessionApplyOneOp( @@ -186345,7 +224366,7 @@ static int sessionApplyOneOp( int nCol; int rc = SQLITE_OK; - assert( p->pDelete && p->pUpdate && p->pInsert && p->pSelect ); + assert( p->pDelete && p->pInsert && p->pSelect ); assert( p->azCol && p->abPK ); assert( !pbReplace || *pbReplace==0 ); @@ -186373,7 +224394,7 @@ static int sessionApplyOneOp( sqlite3_step(p->pDelete); rc = sqlite3_reset(p->pDelete); - if( rc==SQLITE_OK && sqlite3_changes(p->db)==0 ){ + if( rc==SQLITE_OK && sqlite3_changes(p->db)==0 && p->bIgnoreNoop==0 ){ rc = sessionConflictHandler( SQLITE_CHANGESET_DATA, p, pIter, xConflict, pCtx, pbRetry ); @@ -186385,29 +224406,28 @@ static int sessionApplyOneOp( }else if( op==SQLITE_UPDATE ){ int i; + sqlite3_stmt *pUp = 0; + int bPatchset = (pbRetry==0 || pIter->bPatchset); + + rc = sessionUpdateFind(pIter, p, bPatchset, &pUp); /* Bind values to the UPDATE statement. */ for(i=0; rc==SQLITE_OK && ipUpdate, i*3+2, !!pNew); - if( pOld ){ - rc = sessionBindValue(p->pUpdate, i*3+1, pOld); + if( p->abPK[i] || (bPatchset==0 && pOld) ){ + rc = sessionBindValue(pUp, i*2+2, pOld); } if( rc==SQLITE_OK && pNew ){ - rc = sessionBindValue(p->pUpdate, i*3+3, pNew); + rc = sessionBindValue(pUp, i*2+1, pNew); } } - if( rc==SQLITE_OK ){ - sqlite3_bind_int(p->pUpdate, nCol*3+1, pbRetry==0 || pIter->bPatchset); - } if( rc!=SQLITE_OK ) return rc; /* Attempt the UPDATE. In the case of a NOTFOUND or DATA conflict, ** the result will be SQLITE_OK with 0 rows modified. */ - sqlite3_step(p->pUpdate); - rc = sqlite3_reset(p->pUpdate); + sqlite3_step(pUp); + rc = sqlite3_reset(pUp); if( rc==SQLITE_OK && sqlite3_changes(p->db)==0 ){ /* A NOTFOUND or DATA error. Search the table to see if it contains @@ -186429,9 +224449,9 @@ static int sessionApplyOneOp( assert( op==SQLITE_INSERT ); if( p->bStat1 ){ /* Check if there is a conflicting row. For sqlite_stat1, this needs - ** to be done using a SELECT, as there is no PRIMARY KEY in the + ** to be done using a SELECT, as there is no PRIMARY KEY in the ** database schema to throw an exception if a duplicate is inserted. */ - rc = sessionSeekToRow(p->db, pIter, p->abPK, p->pSelect); + rc = sessionSeekToRow(pIter, p); if( rc==SQLITE_ROW ){ rc = SQLITE_CONSTRAINT; sqlite3_reset(p->pSelect); @@ -186462,7 +224482,7 @@ static int sessionApplyOneOp( ** the conflict handler callback. ** ** The difference between this function and sessionApplyOne() is that this -** function handles the case where the conflict-handler is invoked and +** function handles the case where the conflict-handler is invoked and ** returns SQLITE_CHANGESET_REPLACE - indicating that the change should be ** retried in some manner. */ @@ -186482,7 +224502,7 @@ static int sessionApplyOneWithRetry( /* If the bRetry flag is set, the change has not been applied due to an ** SQLITE_CHANGESET_DATA problem (i.e. this is an UPDATE or DELETE and ** a row with the correct PK is present in the db, but one or more other - ** fields do not contain the expected values) and the conflict handler + ** fields do not contain the expected values) and the conflict handler ** returned SQLITE_CHANGESET_REPLACE. In this case retry the operation, ** but pass NULL as the final argument so that sessionApplyOneOp() ignores ** the SQLITE_CHANGESET_DATA problem. */ @@ -186500,7 +224520,7 @@ static int sessionApplyOneWithRetry( assert( pIter->op==SQLITE_INSERT ); rc = sqlite3_exec(db, "SAVEPOINT replace_op", 0, 0, 0); if( rc==SQLITE_OK ){ - rc = sessionBindRow(pIter, + rc = sessionBindRow(pIter, sqlite3changeset_new, pApply->nCol, pApply->abPK, pApply->pDelete); sqlite3_bind_int(pApply->pDelete, pApply->nCol+1, 1); } @@ -186524,7 +224544,7 @@ static int sessionApplyOneWithRetry( ** Retry the changes accumulated in the pApply->constraints buffer. */ static int sessionRetryConstraints( - sqlite3 *db, + sqlite3 *db, int bPatchset, const char *zTab, SessionApplyCtx *pApply, @@ -186538,9 +224558,11 @@ static int sessionRetryConstraints( SessionBuffer cons = pApply->constraints; memset(&pApply->constraints, 0, sizeof(SessionBuffer)); - rc = sessionChangesetStart(&pIter2, 0, 0, cons.nBuf, cons.aBuf); + rc = sessionChangesetStart( + &pIter2, 0, 0, cons.nBuf, cons.aBuf, pApply->bInvertConstraints, 1 + ); if( rc==SQLITE_OK ){ - int nByte = 2*pApply->nCol*sizeof(sqlite3_value*); + size_t nByte = 2*pApply->nCol*sizeof(sqlite3_value*); int rc2; pIter2->bPatchset = bPatchset; pIter2->zTab = (char*)zTab; @@ -186572,7 +224594,7 @@ static int sessionRetryConstraints( /* ** Argument pIter is a changeset iterator that has been initialized, but -** not yet passed to sqlite3changeset_next(). This function applies the +** not yet passed to sqlite3changeset_next(). This function applies the ** changeset to the main database attached to handle "db". The supplied ** conflict handler callback is invoked to resolve any conflicts encountered ** while applying the change. @@ -186604,6 +224626,9 @@ static int sessionChangesetApply( pIter->in.bNoDiscard = 1; memset(&sApply, 0, sizeof(sApply)); + sApply.bRebase = (ppRebase && pnRebase); + sApply.bInvertConstraints = !!(flags & SQLITE_CHANGESETAPPLY_INVERT); + sApply.bIgnoreNoop = !!(flags & SQLITE_CHANGESETAPPLY_IGNORENOOP); sqlite3_mutex_enter(sqlite3_db_mutex(db)); if( (flags & SQLITE_CHANGESETAPPLY_NOSAVEPOINT)==0 ){ rc = sqlite3_exec(db, "SAVEPOINT changeset_apply", 0, 0, 0); @@ -186615,7 +224640,7 @@ static int sessionChangesetApply( int nCol; int op; const char *zNew; - + sqlite3changeset_op(pIter, &zNew, &nCol, &op, 0); if( zTab==0 || sqlite3_strnicmp(zNew, zTab, nTab+1) ){ @@ -186626,14 +224651,13 @@ static int sessionChangesetApply( ); if( rc!=SQLITE_OK ) break; + sessionUpdateFree(&sApply); sqlite3_free((char*)sApply.azCol); /* cast works around VC++ bug */ sqlite3_finalize(sApply.pDelete); - sqlite3_finalize(sApply.pUpdate); sqlite3_finalize(sApply.pInsert); sqlite3_finalize(sApply.pSelect); sApply.db = db; sApply.pDelete = 0; - sApply.pUpdate = 0; sApply.pInsert = 0; sApply.pSelect = 0; sApply.nCol = 0; @@ -186642,9 +224666,10 @@ static int sessionChangesetApply( sApply.bStat1 = 0; sApply.bDeferConstraints = 1; sApply.bRebaseStarted = 0; + sApply.bRowid = 0; memset(&sApply.constraints, 0, sizeof(SessionBuffer)); - /* If an xFilter() callback was specified, invoke it now. If the + /* If an xFilter() callback was specified, invoke it now. If the ** xFilter callback returns zero, skip this table. If it returns ** non-zero, proceed. */ schemaMismatch = (xFilter && (0==xFilter(pCtx, zNew))); @@ -186661,25 +224686,25 @@ static int sessionChangesetApply( int i; sqlite3changeset_pk(pIter, &abPK, 0); - rc = sessionTableInfo( - db, "main", zNew, &sApply.nCol, &zTab, &sApply.azCol, &sApply.abPK + rc = sessionTableInfo(0, db, "main", zNew, + &sApply.nCol, &zTab, &sApply.azCol, &sApply.abPK, &sApply.bRowid ); if( rc!=SQLITE_OK ) break; for(i=0; iop==SQLITE_DELETE && pExist->bIndirect ){ *ppNew = pExist; }else{ - int nByte = nRec + pExist->nRecord + sizeof(SessionChange); - pNew = (SessionChange*)sqlite3_malloc(nByte); + sqlite3_int64 nByte = nRec + pExist->nRecord + sizeof(SessionChange); + pNew = (SessionChange*)sqlite3_malloc64(nByte); if( pNew==0 ){ rc = SQLITE_NOMEM; }else{ @@ -186976,7 +225003,7 @@ static int sessionChangeMerge( }else{ int op1 = pExist->op; - /* + /* ** op1=INSERT, op2=INSERT -> Unsupported. Discard op2. ** op1=INSERT, op2=UPDATE -> INSERT. ** op1=INSERT, op2=DELETE -> (none) @@ -186988,7 +225015,7 @@ static int sessionChangeMerge( ** op1=DELETE, op2=INSERT -> UPDATE. ** op1=DELETE, op2=UPDATE -> Unsupported. Discard op2. ** op1=DELETE, op2=DELETE -> Unsupported. Discard op2. - */ + */ if( (op1==SQLITE_INSERT && op2==SQLITE_INSERT) || (op1==SQLITE_UPDATE && op2==SQLITE_INSERT) || (op1==SQLITE_DELETE && op2==SQLITE_UPDATE) @@ -187000,14 +225027,14 @@ static int sessionChangeMerge( assert( pNew==0 ); }else{ u8 *aExist = pExist->aRecord; - int nByte; + sqlite3_int64 nByte; u8 *aCsr; /* Allocate a new SessionChange object. Ensure that the aRecord[] ** buffer of the new object is large enough to hold any record that ** may be generated by combining the input records. */ nByte = sizeof(SessionChange) + pExist->nRecord + nRec; - pNew = (SessionChange *)sqlite3_malloc(nByte); + pNew = (SessionChange *)sqlite3_malloc64(nByte); if( !pNew ){ sqlite3_free(pExist); return SQLITE_NOMEM; @@ -187113,7 +225140,7 @@ static int sessionChangesetToHash( if( !pTab ){ SessionTable **ppTab; - pTab = sqlite3_malloc(sizeof(SessionTable) + nCol + nNew+1); + pTab = sqlite3_malloc64(sizeof(SessionTable) + nCol + nNew+1); if( !pTab ){ rc = SQLITE_NOMEM; break; @@ -187127,7 +225154,7 @@ static int sessionChangesetToHash( /* The new object must be linked on to the end of the list, not ** simply added to the start of it. This is to ensure that the - ** tables within the output of sqlite3changegroup_output() are in + ** tables within the output of sqlite3changegroup_output() are in ** the right order. */ for(ppTab=&pGrp->pList; *ppTab; ppTab=&(*ppTab)->pNext); *ppTab = pTab; @@ -187137,7 +225164,7 @@ static int sessionChangesetToHash( } } - if( sessionGrowHash(pIter->bPatchset, pTab) ){ + if( sessionGrowHash(0, pIter->bPatchset, pTab) ){ rc = SQLITE_NOMEM; break; } @@ -187145,7 +225172,7 @@ static int sessionChangesetToHash( pTab, (pIter->bPatchset && op==SQLITE_DELETE), aRec, pTab->nChange ); - /* Search for existing entry. If found, remove it from the hash table. + /* Search for existing entry. If found, remove it from the hash table. ** Code below may link it back in. */ for(pp=&pTab->apChange[iHash]; *pp; pp=&(*pp)->pNext){ @@ -187163,7 +225190,7 @@ static int sessionChangesetToHash( } } - rc = sessionChangeMerge(pTab, bRebase, + rc = sessionChangeMerge(pTab, bRebase, pIter->bPatchset, pExist, op, bIndirect, aRec, nRec, &pChange ); if( rc ) break; @@ -187184,7 +225211,7 @@ static int sessionChangesetToHash( ** ** If xOutput is not NULL, then the changeset/patchset is returned to the ** user via one or more calls to xOutput, as with the other streaming -** interfaces. +** interfaces. ** ** Or, if xOutput is NULL, then (*ppOut) is populated with a pointer to a ** buffer containing the output changeset before this function returns. In @@ -187209,7 +225236,7 @@ static int sessionChangegroupOutput( assert( xOutput==0 || (ppOut==0 && pnOut==0) ); /* Create the serialized output changeset based on the contents of the - ** hash tables attached to the SessionTable objects in list p->pList. + ** hash tables attached to the SessionTable objects in list p->pList. */ for(pTab=pGrp->pList; rc==SQLITE_OK && pTab; pTab=pTab->pNext){ int i; @@ -187222,21 +225249,20 @@ static int sessionChangegroupOutput( sessionAppendByte(&buf, p->op, &rc); sessionAppendByte(&buf, p->bIndirect, &rc); sessionAppendBlob(&buf, p->aRecord, p->nRecord, &rc); + if( rc==SQLITE_OK && xOutput && buf.nBuf>=sessions_strm_chunk_size ){ + rc = xOutput(pOut, buf.aBuf, buf.nBuf); + buf.nBuf = 0; + } } } - - if( rc==SQLITE_OK && xOutput && buf.nBuf>=SESSIONS_STRM_CHUNK_SIZE ){ - rc = xOutput(pOut, buf.aBuf, buf.nBuf); - buf.nBuf = 0; - } } if( rc==SQLITE_OK ){ if( xOutput ){ if( buf.nBuf>0 ) rc = xOutput(pOut, buf.aBuf, buf.nBuf); - }else{ + }else if( ppOut ){ *ppOut = buf.aBuf; - *pnOut = buf.nBuf; + if( pnOut ) *pnOut = buf.nBuf; buf.aBuf = 0; } } @@ -187313,7 +225339,7 @@ SQLITE_API int sqlite3changegroup_add_strm( */ SQLITE_API int sqlite3changegroup_output_strm( sqlite3_changegroup *pGrp, - int (*xOutput)(void *pOut, const void *pData, int nData), + int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ){ return sessionChangegroupOutput(pGrp, xOutput, pOut, 0, 0); @@ -187324,12 +225350,12 @@ SQLITE_API int sqlite3changegroup_output_strm( */ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup *pGrp){ if( pGrp ){ - sessionDeleteTable(pGrp->pList); + sessionDeleteTable(0, pGrp->pList); sqlite3_free(pGrp); } } -/* +/* ** Combine two changesets together. */ SQLITE_API int sqlite3changeset_concat( @@ -187396,7 +225422,7 @@ struct sqlite3_rebaser { /* ** Buffers a1 and a2 must both contain a sessions module record nCol -** fields in size. This function appends an nCol sessions module +** fields in size. This function appends an nCol sessions module ** record to buffer pBuf that is a copy of a1, except that for ** each field that is undefined in a1[], swap in the field from a2[]. */ @@ -187431,20 +225457,20 @@ static void sessionAppendRecordMerge( } /* -** This function is called when rebasing a local UPDATE change against one +** This function is called when rebasing a local UPDATE change against one ** or more remote UPDATE changes. The aRec/nRec buffer contains the current ** old.* and new.* records for the change. The rebase buffer (a single ** record) is in aChange/nChange. The rebased change is appended to buffer ** pBuf. ** -** Rebasing the UPDATE involves: +** Rebasing the UPDATE involves: ** ** * Removing any changes to fields for which the corresponding field ** in the rebase buffer is set to "replaced" (type 0xFF). If this ** means the UPDATE change updates no fields, nothing is appended ** to the output buffer. ** -** * For each field modified by the local change for which the +** * For each field modified by the local change for which the ** corresponding field in the rebase buffer is not "undefined" (0x00) ** or "replaced" (0xFF), the old.* value is replaced by the value ** in the rebase buffer. @@ -187470,10 +225496,10 @@ static void sessionAppendPartialUpdate( int n1 = sessionSerialLen(a1); int n2 = sessionSerialLen(a2); if( pIter->abPK[i] || a2[0]==0 ){ - if( !pIter->abPK[i] ) bData = 1; + if( !pIter->abPK[i] && a1[0] ) bData = 1; memcpy(pOut, a1, n1); pOut += n1; - }else if( a2[0]!=0xFF ){ + }else if( a2[0]!=0xFF && a1[0] ){ bData = 1; memcpy(pOut, a2, n2); pOut += n2; @@ -187503,15 +225529,15 @@ static void sessionAppendPartialUpdate( } /* -** pIter is configured to iterate through a changeset. This function rebases -** that changeset according to the current configuration of the rebaser +** pIter is configured to iterate through a changeset. This function rebases +** that changeset according to the current configuration of the rebaser ** object passed as the first argument. If no error occurs and argument xOutput ** is not NULL, then the changeset is returned to the caller by invoking ** xOutput zero or more times and SQLITE_OK returned. Or, if xOutput is NULL, ** then (*ppOut) is set to point to a buffer containing the rebased changeset ** before this function returns. In this case (*pnOut) is set to the size of ** the buffer in bytes. It is the responsibility of the caller to eventually -** free the (*ppOut) buffer using sqlite3_free(). +** free the (*ppOut) buffer using sqlite3_free(). ** ** If an error occurs, an SQLite error code is returned. If ppOut and ** pnOut are not NULL, then the two output parameters are set to 0 before @@ -187589,7 +225615,7 @@ static int sessionRebase( sessionAppendByte(&sOut, SQLITE_INSERT, &rc); sessionAppendByte(&sOut, pIter->bIndirect, &rc); sessionAppendRecordMerge(&sOut, pIter->nCol, - pCsr, nRec-(pCsr-aRec), + pCsr, nRec-(pCsr-aRec), pChange->aRecord, pChange->nRecord, &rc ); } @@ -187619,7 +225645,7 @@ static int sessionRebase( sessionAppendByte(&sOut, pIter->bIndirect, &rc); sessionAppendBlob(&sOut, aRec, nRec, &rc); } - if( rc==SQLITE_OK && xOutput && sOut.nBuf>SESSIONS_STRM_CHUNK_SIZE ){ + if( rc==SQLITE_OK && xOutput && sOut.nBuf>sessions_strm_chunk_size ){ rc = xOutput(pOut, sOut.aBuf, sOut.nBuf); sOut.nBuf = 0; } @@ -187636,7 +225662,7 @@ static int sessionRebase( if( sOut.nBuf>0 ){ rc = xOutput(pOut, sOut.aBuf, sOut.nBuf); } - }else{ + }else if( ppOut ){ *ppOut = (void*)sOut.aBuf; *pnOut = sOut.nBuf; sOut.aBuf = 0; @@ -187646,7 +225672,7 @@ static int sessionRebase( return rc; } -/* +/* ** Create a new rebaser object. */ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew){ @@ -187663,11 +225689,11 @@ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew){ return rc; } -/* +/* ** Call this one or more times to configure a rebaser. */ SQLITE_API int sqlite3rebaser_configure( - sqlite3_rebaser *p, + sqlite3_rebaser *p, int nRebase, const void *pRebase ){ sqlite3_changeset_iter *pIter = 0; /* Iterator opened on pData/nData */ @@ -187680,15 +225706,15 @@ SQLITE_API int sqlite3rebaser_configure( return rc; } -/* -** Rebase a changeset according to current rebaser configuration +/* +** Rebase a changeset according to current rebaser configuration */ SQLITE_API int sqlite3rebaser_rebase( sqlite3_rebaser *p, - int nIn, const void *pIn, - int *pnOut, void **ppOut + int nIn, const void *pIn, + int *pnOut, void **ppOut ){ - sqlite3_changeset_iter *pIter = 0; /* Iterator to skip through input */ + sqlite3_changeset_iter *pIter = 0; /* Iterator to skip through input */ int rc = sqlite3changeset_start(&pIter, nIn, (void*)pIn); if( rc==SQLITE_OK ){ @@ -187699,8 +225725,8 @@ SQLITE_API int sqlite3rebaser_rebase( return rc; } -/* -** Rebase a changeset according to current rebaser configuration +/* +** Rebase a changeset according to current rebaser configuration */ SQLITE_API int sqlite3rebaser_rebase_strm( sqlite3_rebaser *p, @@ -187709,7 +225735,7 @@ SQLITE_API int sqlite3rebaser_rebase_strm( int (*xOutput)(void *pOut, const void *pData, int nData), void *pOut ){ - sqlite3_changeset_iter *pIter = 0; /* Iterator to skip through input */ + sqlite3_changeset_iter *pIter = 0; /* Iterator to skip through input */ int rc = sqlite3changeset_start_strm(&pIter, xInput, pIn); if( rc==SQLITE_OK ){ @@ -187720,2455 +225746,46 @@ SQLITE_API int sqlite3rebaser_rebase_strm( return rc; } -/* -** Destroy a rebaser object +/* +** Destroy a rebaser object */ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p){ if( p ){ - sessionDeleteTable(p->grp.pList); + sessionDeleteTable(0, p->grp.pList); sqlite3_free(p); } } +/* +** Global configuration +*/ +SQLITE_API int sqlite3session_config(int op, void *pArg){ + int rc = SQLITE_OK; + switch( op ){ + case SQLITE_SESSION_CONFIG_STRMSIZE: { + int *pInt = (int*)pArg; + if( *pInt>0 ){ + sessions_strm_chunk_size = *pInt; + } + *pInt = sessions_strm_chunk_size; + break; + } + default: + rc = SQLITE_MISUSE; + break; + } + return rc; +} + #endif /* SQLITE_ENABLE_SESSION && SQLITE_ENABLE_PREUPDATE_HOOK */ /************** End of sqlite3session.c **************************************/ -/************** Begin file json1.c *******************************************/ -/* -** 2015-08-12 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This SQLite extension implements JSON functions. The interface is -** modeled after MySQL JSON functions: -** -** https://dev.mysql.com/doc/refman/5.7/en/json.html -** -** For the time being, all JSON is stored as pure text. (We might add -** a JSONB type in the future which stores a binary encoding of JSON in -** a BLOB, but there is no support for JSONB in the current implementation. -** This implementation parses JSON text at 250 MB/s, so it is hard to see -** how JSONB might improve on that.) -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_JSON1) -#if !defined(SQLITEINT_H) -/* #include "sqlite3ext.h" */ -#endif -SQLITE_EXTENSION_INIT1 -/* #include */ -/* #include */ -/* #include */ -/* #include */ - -/* Mark a function parameter as unused, to suppress nuisance compiler -** warnings. */ -#ifndef UNUSED_PARAM -# define UNUSED_PARAM(X) (void)(X) -#endif - -#ifndef LARGEST_INT64 -# define LARGEST_INT64 (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32)) -# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64) -#endif - -/* -** Versions of isspace(), isalnum() and isdigit() to which it is safe -** to pass signed char values. -*/ -#ifdef sqlite3Isdigit - /* Use the SQLite core versions if this routine is part of the - ** SQLite amalgamation */ -# define safe_isdigit(x) sqlite3Isdigit(x) -# define safe_isalnum(x) sqlite3Isalnum(x) -# define safe_isxdigit(x) sqlite3Isxdigit(x) -#else - /* Use the standard library for separate compilation */ -#include /* amalgamator: keep */ -# define safe_isdigit(x) isdigit((unsigned char)(x)) -# define safe_isalnum(x) isalnum((unsigned char)(x)) -# define safe_isxdigit(x) isxdigit((unsigned char)(x)) -#endif - -/* -** Growing our own isspace() routine this way is twice as fast as -** the library isspace() function, resulting in a 7% overall performance -** increase for the parser. (Ubuntu14.10 gcc 4.8.4 x64 with -Os). -*/ -static const char jsonIsSpace[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -}; -#define safe_isspace(x) (jsonIsSpace[(unsigned char)x]) - -#ifndef SQLITE_AMALGAMATION - /* Unsigned integer types. These are already defined in the sqliteInt.h, - ** but the definitions need to be repeated for separate compilation. */ - typedef sqlite3_uint64 u64; - typedef unsigned int u32; - typedef unsigned short int u16; - typedef unsigned char u8; -#endif - -/* Objects */ -typedef struct JsonString JsonString; -typedef struct JsonNode JsonNode; -typedef struct JsonParse JsonParse; - -/* An instance of this object represents a JSON string -** under construction. Really, this is a generic string accumulator -** that can be and is used to create strings other than JSON. -*/ -struct JsonString { - sqlite3_context *pCtx; /* Function context - put error messages here */ - char *zBuf; /* Append JSON content here */ - u64 nAlloc; /* Bytes of storage available in zBuf[] */ - u64 nUsed; /* Bytes of zBuf[] currently used */ - u8 bStatic; /* True if zBuf is static space */ - u8 bErr; /* True if an error has been encountered */ - char zSpace[100]; /* Initial static space */ -}; - -/* JSON type values -*/ -#define JSON_NULL 0 -#define JSON_TRUE 1 -#define JSON_FALSE 2 -#define JSON_INT 3 -#define JSON_REAL 4 -#define JSON_STRING 5 -#define JSON_ARRAY 6 -#define JSON_OBJECT 7 - -/* The "subtype" set for JSON values */ -#define JSON_SUBTYPE 74 /* Ascii for "J" */ - -/* -** Names of the various JSON types: -*/ -static const char * const jsonType[] = { - "null", "true", "false", "integer", "real", "text", "array", "object" -}; - -/* Bit values for the JsonNode.jnFlag field -*/ -#define JNODE_RAW 0x01 /* Content is raw, not JSON encoded */ -#define JNODE_ESCAPE 0x02 /* Content is text with \ escapes */ -#define JNODE_REMOVE 0x04 /* Do not output */ -#define JNODE_REPLACE 0x08 /* Replace with JsonNode.u.iReplace */ -#define JNODE_PATCH 0x10 /* Patch with JsonNode.u.pPatch */ -#define JNODE_APPEND 0x20 /* More ARRAY/OBJECT entries at u.iAppend */ -#define JNODE_LABEL 0x40 /* Is a label of an object */ - - -/* A single node of parsed JSON -*/ -struct JsonNode { - u8 eType; /* One of the JSON_ type values */ - u8 jnFlags; /* JNODE flags */ - u32 n; /* Bytes of content, or number of sub-nodes */ - union { - const char *zJContent; /* Content for INT, REAL, and STRING */ - u32 iAppend; /* More terms for ARRAY and OBJECT */ - u32 iKey; /* Key for ARRAY objects in json_tree() */ - u32 iReplace; /* Replacement content for JNODE_REPLACE */ - JsonNode *pPatch; /* Node chain of patch for JNODE_PATCH */ - } u; -}; - -/* A completely parsed JSON string -*/ -struct JsonParse { - u32 nNode; /* Number of slots of aNode[] used */ - u32 nAlloc; /* Number of slots of aNode[] allocated */ - JsonNode *aNode; /* Array of nodes containing the parse */ - const char *zJson; /* Original JSON string */ - u32 *aUp; /* Index of parent of each node */ - u8 oom; /* Set to true if out of memory */ - u8 nErr; /* Number of errors seen */ - u16 iDepth; /* Nesting depth */ - int nJson; /* Length of the zJson string in bytes */ -}; - -/* -** Maximum nesting depth of JSON for this implementation. -** -** This limit is needed to avoid a stack overflow in the recursive -** descent parser. A depth of 2000 is far deeper than any sane JSON -** should go. -*/ -#define JSON_MAX_DEPTH 2000 - -/************************************************************************** -** Utility routines for dealing with JsonString objects -**************************************************************************/ - -/* Set the JsonString object to an empty string -*/ -static void jsonZero(JsonString *p){ - p->zBuf = p->zSpace; - p->nAlloc = sizeof(p->zSpace); - p->nUsed = 0; - p->bStatic = 1; -} - -/* Initialize the JsonString object -*/ -static void jsonInit(JsonString *p, sqlite3_context *pCtx){ - p->pCtx = pCtx; - p->bErr = 0; - jsonZero(p); -} - - -/* Free all allocated memory and reset the JsonString object back to its -** initial state. -*/ -static void jsonReset(JsonString *p){ - if( !p->bStatic ) sqlite3_free(p->zBuf); - jsonZero(p); -} - - -/* Report an out-of-memory (OOM) condition -*/ -static void jsonOom(JsonString *p){ - p->bErr = 1; - sqlite3_result_error_nomem(p->pCtx); - jsonReset(p); -} - -/* Enlarge pJson->zBuf so that it can hold at least N more bytes. -** Return zero on success. Return non-zero on an OOM error -*/ -static int jsonGrow(JsonString *p, u32 N){ - u64 nTotal = NnAlloc ? p->nAlloc*2 : p->nAlloc+N+10; - char *zNew; - if( p->bStatic ){ - if( p->bErr ) return 1; - zNew = sqlite3_malloc64(nTotal); - if( zNew==0 ){ - jsonOom(p); - return SQLITE_NOMEM; - } - memcpy(zNew, p->zBuf, (size_t)p->nUsed); - p->zBuf = zNew; - p->bStatic = 0; - }else{ - zNew = sqlite3_realloc64(p->zBuf, nTotal); - if( zNew==0 ){ - jsonOom(p); - return SQLITE_NOMEM; - } - p->zBuf = zNew; - } - p->nAlloc = nTotal; - return SQLITE_OK; -} - -/* Append N bytes from zIn onto the end of the JsonString string. -*/ -static void jsonAppendRaw(JsonString *p, const char *zIn, u32 N){ - if( (N+p->nUsed >= p->nAlloc) && jsonGrow(p,N)!=0 ) return; - memcpy(p->zBuf+p->nUsed, zIn, N); - p->nUsed += N; -} - -/* Append formatted text (not to exceed N bytes) to the JsonString. -*/ -static void jsonPrintf(int N, JsonString *p, const char *zFormat, ...){ - va_list ap; - if( (p->nUsed + N >= p->nAlloc) && jsonGrow(p, N) ) return; - va_start(ap, zFormat); - sqlite3_vsnprintf(N, p->zBuf+p->nUsed, zFormat, ap); - va_end(ap); - p->nUsed += (int)strlen(p->zBuf+p->nUsed); -} - -/* Append a single character -*/ -static void jsonAppendChar(JsonString *p, char c){ - if( p->nUsed>=p->nAlloc && jsonGrow(p,1)!=0 ) return; - p->zBuf[p->nUsed++] = c; -} - -/* Append a comma separator to the output buffer, if the previous -** character is not '[' or '{'. -*/ -static void jsonAppendSeparator(JsonString *p){ - char c; - if( p->nUsed==0 ) return; - c = p->zBuf[p->nUsed-1]; - if( c!='[' && c!='{' ) jsonAppendChar(p, ','); -} - -/* Append the N-byte string in zIn to the end of the JsonString string -** under construction. Enclose the string in "..." and escape -** any double-quotes or backslash characters contained within the -** string. -*/ -static void jsonAppendString(JsonString *p, const char *zIn, u32 N){ - u32 i; - if( (N+p->nUsed+2 >= p->nAlloc) && jsonGrow(p,N+2)!=0 ) return; - p->zBuf[p->nUsed++] = '"'; - for(i=0; inUsed+N+3-i > p->nAlloc) && jsonGrow(p,N+3-i)!=0 ) return; - p->zBuf[p->nUsed++] = '\\'; - }else if( c<=0x1f ){ - static const char aSpecial[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 'b', 't', 'n', 0, 'f', 'r', 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - }; - assert( sizeof(aSpecial)==32 ); - assert( aSpecial['\b']=='b' ); - assert( aSpecial['\f']=='f' ); - assert( aSpecial['\n']=='n' ); - assert( aSpecial['\r']=='r' ); - assert( aSpecial['\t']=='t' ); - if( aSpecial[c] ){ - c = aSpecial[c]; - goto json_simple_escape; - } - if( (p->nUsed+N+7+i > p->nAlloc) && jsonGrow(p,N+7-i)!=0 ) return; - p->zBuf[p->nUsed++] = '\\'; - p->zBuf[p->nUsed++] = 'u'; - p->zBuf[p->nUsed++] = '0'; - p->zBuf[p->nUsed++] = '0'; - p->zBuf[p->nUsed++] = '0' + (c>>4); - c = "0123456789abcdef"[c&0xf]; - } - p->zBuf[p->nUsed++] = c; - } - p->zBuf[p->nUsed++] = '"'; - assert( p->nUsednAlloc ); -} - -/* -** Append a function parameter value to the JSON string under -** construction. -*/ -static void jsonAppendValue( - JsonString *p, /* Append to this JSON string */ - sqlite3_value *pValue /* Value to append */ -){ - switch( sqlite3_value_type(pValue) ){ - case SQLITE_NULL: { - jsonAppendRaw(p, "null", 4); - break; - } - case SQLITE_INTEGER: - case SQLITE_FLOAT: { - const char *z = (const char*)sqlite3_value_text(pValue); - u32 n = (u32)sqlite3_value_bytes(pValue); - jsonAppendRaw(p, z, n); - break; - } - case SQLITE_TEXT: { - const char *z = (const char*)sqlite3_value_text(pValue); - u32 n = (u32)sqlite3_value_bytes(pValue); - if( sqlite3_value_subtype(pValue)==JSON_SUBTYPE ){ - jsonAppendRaw(p, z, n); - }else{ - jsonAppendString(p, z, n); - } - break; - } - default: { - if( p->bErr==0 ){ - sqlite3_result_error(p->pCtx, "JSON cannot hold BLOB values", -1); - p->bErr = 2; - jsonReset(p); - } - break; - } - } -} - - -/* Make the JSON in p the result of the SQL function. -*/ -static void jsonResult(JsonString *p){ - if( p->bErr==0 ){ - sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed, - p->bStatic ? SQLITE_TRANSIENT : sqlite3_free, - SQLITE_UTF8); - jsonZero(p); - } - assert( p->bStatic ); -} - -/************************************************************************** -** Utility routines for dealing with JsonNode and JsonParse objects -**************************************************************************/ - -/* -** Return the number of consecutive JsonNode slots need to represent -** the parsed JSON at pNode. The minimum answer is 1. For ARRAY and -** OBJECT types, the number might be larger. -** -** Appended elements are not counted. The value returned is the number -** by which the JsonNode counter should increment in order to go to the -** next peer value. -*/ -static u32 jsonNodeSize(JsonNode *pNode){ - return pNode->eType>=JSON_ARRAY ? pNode->n+1 : 1; -} - -/* -** Reclaim all memory allocated by a JsonParse object. But do not -** delete the JsonParse object itself. -*/ -static void jsonParseReset(JsonParse *pParse){ - sqlite3_free(pParse->aNode); - pParse->aNode = 0; - pParse->nNode = 0; - pParse->nAlloc = 0; - sqlite3_free(pParse->aUp); - pParse->aUp = 0; -} - -/* -** Free a JsonParse object that was obtained from sqlite3_malloc(). -*/ -static void jsonParseFree(JsonParse *pParse){ - jsonParseReset(pParse); - sqlite3_free(pParse); -} - -/* -** Convert the JsonNode pNode into a pure JSON string and -** append to pOut. Subsubstructure is also included. Return -** the number of JsonNode objects that are encoded. -*/ -static void jsonRenderNode( - JsonNode *pNode, /* The node to render */ - JsonString *pOut, /* Write JSON here */ - sqlite3_value **aReplace /* Replacement values */ -){ - if( pNode->jnFlags & (JNODE_REPLACE|JNODE_PATCH) ){ - if( pNode->jnFlags & JNODE_REPLACE ){ - jsonAppendValue(pOut, aReplace[pNode->u.iReplace]); - return; - } - pNode = pNode->u.pPatch; - } - switch( pNode->eType ){ - default: { - assert( pNode->eType==JSON_NULL ); - jsonAppendRaw(pOut, "null", 4); - break; - } - case JSON_TRUE: { - jsonAppendRaw(pOut, "true", 4); - break; - } - case JSON_FALSE: { - jsonAppendRaw(pOut, "false", 5); - break; - } - case JSON_STRING: { - if( pNode->jnFlags & JNODE_RAW ){ - jsonAppendString(pOut, pNode->u.zJContent, pNode->n); - break; - } - /* Fall through into the next case */ - } - case JSON_REAL: - case JSON_INT: { - jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n); - break; - } - case JSON_ARRAY: { - u32 j = 1; - jsonAppendChar(pOut, '['); - for(;;){ - while( j<=pNode->n ){ - if( (pNode[j].jnFlags & JNODE_REMOVE)==0 ){ - jsonAppendSeparator(pOut); - jsonRenderNode(&pNode[j], pOut, aReplace); - } - j += jsonNodeSize(&pNode[j]); - } - if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; - pNode = &pNode[pNode->u.iAppend]; - j = 1; - } - jsonAppendChar(pOut, ']'); - break; - } - case JSON_OBJECT: { - u32 j = 1; - jsonAppendChar(pOut, '{'); - for(;;){ - while( j<=pNode->n ){ - if( (pNode[j+1].jnFlags & JNODE_REMOVE)==0 ){ - jsonAppendSeparator(pOut); - jsonRenderNode(&pNode[j], pOut, aReplace); - jsonAppendChar(pOut, ':'); - jsonRenderNode(&pNode[j+1], pOut, aReplace); - } - j += 1 + jsonNodeSize(&pNode[j+1]); - } - if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; - pNode = &pNode[pNode->u.iAppend]; - j = 1; - } - jsonAppendChar(pOut, '}'); - break; - } - } -} - -/* -** Return a JsonNode and all its descendents as a JSON string. -*/ -static void jsonReturnJson( - JsonNode *pNode, /* Node to return */ - sqlite3_context *pCtx, /* Return value for this function */ - sqlite3_value **aReplace /* Array of replacement values */ -){ - JsonString s; - jsonInit(&s, pCtx); - jsonRenderNode(pNode, &s, aReplace); - jsonResult(&s); - sqlite3_result_subtype(pCtx, JSON_SUBTYPE); -} - -/* -** Make the JsonNode the return value of the function. -*/ -static void jsonReturn( - JsonNode *pNode, /* Node to return */ - sqlite3_context *pCtx, /* Return value for this function */ - sqlite3_value **aReplace /* Array of replacement values */ -){ - switch( pNode->eType ){ - default: { - assert( pNode->eType==JSON_NULL ); - sqlite3_result_null(pCtx); - break; - } - case JSON_TRUE: { - sqlite3_result_int(pCtx, 1); - break; - } - case JSON_FALSE: { - sqlite3_result_int(pCtx, 0); - break; - } - case JSON_INT: { - sqlite3_int64 i = 0; - const char *z = pNode->u.zJContent; - if( z[0]=='-' ){ z++; } - while( z[0]>='0' && z[0]<='9' ){ - unsigned v = *(z++) - '0'; - if( i>=LARGEST_INT64/10 ){ - if( i>LARGEST_INT64/10 ) goto int_as_real; - if( z[0]>='0' && z[0]<='9' ) goto int_as_real; - if( v==9 ) goto int_as_real; - if( v==8 ){ - if( pNode->u.zJContent[0]=='-' ){ - sqlite3_result_int64(pCtx, SMALLEST_INT64); - goto int_done; - }else{ - goto int_as_real; - } - } - } - i = i*10 + v; - } - if( pNode->u.zJContent[0]=='-' ){ i = -i; } - sqlite3_result_int64(pCtx, i); - int_done: - break; - int_as_real: /* fall through to real */; - } - case JSON_REAL: { - double r; -#ifdef SQLITE_AMALGAMATION - const char *z = pNode->u.zJContent; - sqlite3AtoF(z, &r, sqlite3Strlen30(z), SQLITE_UTF8); -#else - r = strtod(pNode->u.zJContent, 0); -#endif - sqlite3_result_double(pCtx, r); - break; - } - case JSON_STRING: { -#if 0 /* Never happens because JNODE_RAW is only set by json_set(), - ** json_insert() and json_replace() and those routines do not - ** call jsonReturn() */ - if( pNode->jnFlags & JNODE_RAW ){ - sqlite3_result_text(pCtx, pNode->u.zJContent, pNode->n, - SQLITE_TRANSIENT); - }else -#endif - assert( (pNode->jnFlags & JNODE_RAW)==0 ); - if( (pNode->jnFlags & JNODE_ESCAPE)==0 ){ - /* JSON formatted without any backslash-escapes */ - sqlite3_result_text(pCtx, pNode->u.zJContent+1, pNode->n-2, - SQLITE_TRANSIENT); - }else{ - /* Translate JSON formatted string into raw text */ - u32 i; - u32 n = pNode->n; - const char *z = pNode->u.zJContent; - char *zOut; - u32 j; - zOut = sqlite3_malloc( n+1 ); - if( zOut==0 ){ - sqlite3_result_error_nomem(pCtx); - break; - } - for(i=1, j=0; i>6)); - zOut[j++] = 0x80 | (v&0x3f); - }else{ - zOut[j++] = (char)(0xe0 | (v>>12)); - zOut[j++] = 0x80 | ((v>>6)&0x3f); - zOut[j++] = 0x80 | (v&0x3f); - } - }else{ - if( c=='b' ){ - c = '\b'; - }else if( c=='f' ){ - c = '\f'; - }else if( c=='n' ){ - c = '\n'; - }else if( c=='r' ){ - c = '\r'; - }else if( c=='t' ){ - c = '\t'; - } - zOut[j++] = c; - } - } - } - zOut[j] = 0; - sqlite3_result_text(pCtx, zOut, j, sqlite3_free); - } - break; - } - case JSON_ARRAY: - case JSON_OBJECT: { - jsonReturnJson(pNode, pCtx, aReplace); - break; - } - } -} - -/* Forward reference */ -static int jsonParseAddNode(JsonParse*,u32,u32,const char*); - -/* -** A macro to hint to the compiler that a function should not be -** inlined. -*/ -#if defined(__GNUC__) -# define JSON_NOINLINE __attribute__((noinline)) -#elif defined(_MSC_VER) && _MSC_VER>=1310 -# define JSON_NOINLINE __declspec(noinline) -#else -# define JSON_NOINLINE -#endif - - -static JSON_NOINLINE int jsonParseAddNodeExpand( - JsonParse *pParse, /* Append the node to this object */ - u32 eType, /* Node type */ - u32 n, /* Content size or sub-node count */ - const char *zContent /* Content */ -){ - u32 nNew; - JsonNode *pNew; - assert( pParse->nNode>=pParse->nAlloc ); - if( pParse->oom ) return -1; - nNew = pParse->nAlloc*2 + 10; - pNew = sqlite3_realloc(pParse->aNode, sizeof(JsonNode)*nNew); - if( pNew==0 ){ - pParse->oom = 1; - return -1; - } - pParse->nAlloc = nNew; - pParse->aNode = pNew; - assert( pParse->nNodenAlloc ); - return jsonParseAddNode(pParse, eType, n, zContent); -} - -/* -** Create a new JsonNode instance based on the arguments and append that -** instance to the JsonParse. Return the index in pParse->aNode[] of the -** new node, or -1 if a memory allocation fails. -*/ -static int jsonParseAddNode( - JsonParse *pParse, /* Append the node to this object */ - u32 eType, /* Node type */ - u32 n, /* Content size or sub-node count */ - const char *zContent /* Content */ -){ - JsonNode *p; - if( pParse->nNode>=pParse->nAlloc ){ - return jsonParseAddNodeExpand(pParse, eType, n, zContent); - } - p = &pParse->aNode[pParse->nNode]; - p->eType = (u8)eType; - p->jnFlags = 0; - p->n = n; - p->u.zJContent = zContent; - return pParse->nNode++; -} - -/* -** Return true if z[] begins with 4 (or more) hexadecimal digits -*/ -static int jsonIs4Hex(const char *z){ - int i; - for(i=0; i<4; i++) if( !safe_isxdigit(z[i]) ) return 0; - return 1; -} - -/* -** Parse a single JSON value which begins at pParse->zJson[i]. Return the -** index of the first character past the end of the value parsed. -** -** Return negative for a syntax error. Special cases: return -2 if the -** first non-whitespace character is '}' and return -3 if the first -** non-whitespace character is ']'. -*/ -static int jsonParseValue(JsonParse *pParse, u32 i){ - char c; - u32 j; - int iThis; - int x; - JsonNode *pNode; - const char *z = pParse->zJson; - while( safe_isspace(z[i]) ){ i++; } - if( (c = z[i])=='{' ){ - /* Parse object */ - iThis = jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); - if( iThis<0 ) return -1; - for(j=i+1;;j++){ - while( safe_isspace(z[j]) ){ j++; } - if( ++pParse->iDepth > JSON_MAX_DEPTH ) return -1; - x = jsonParseValue(pParse, j); - if( x<0 ){ - pParse->iDepth--; - if( x==(-2) && pParse->nNode==(u32)iThis+1 ) return j+1; - return -1; - } - if( pParse->oom ) return -1; - pNode = &pParse->aNode[pParse->nNode-1]; - if( pNode->eType!=JSON_STRING ) return -1; - pNode->jnFlags |= JNODE_LABEL; - j = x; - while( safe_isspace(z[j]) ){ j++; } - if( z[j]!=':' ) return -1; - j++; - x = jsonParseValue(pParse, j); - pParse->iDepth--; - if( x<0 ) return -1; - j = x; - while( safe_isspace(z[j]) ){ j++; } - c = z[j]; - if( c==',' ) continue; - if( c!='}' ) return -1; - break; - } - pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; - return j+1; - }else if( c=='[' ){ - /* Parse array */ - iThis = jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); - if( iThis<0 ) return -1; - for(j=i+1;;j++){ - while( safe_isspace(z[j]) ){ j++; } - if( ++pParse->iDepth > JSON_MAX_DEPTH ) return -1; - x = jsonParseValue(pParse, j); - pParse->iDepth--; - if( x<0 ){ - if( x==(-3) && pParse->nNode==(u32)iThis+1 ) return j+1; - return -1; - } - j = x; - while( safe_isspace(z[j]) ){ j++; } - c = z[j]; - if( c==',' ) continue; - if( c!=']' ) return -1; - break; - } - pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; - return j+1; - }else if( c=='"' ){ - /* Parse string */ - u8 jnFlags = 0; - j = i+1; - for(;;){ - c = z[j]; - if( (c & ~0x1f)==0 ){ - /* Control characters are not allowed in strings */ - return -1; - } - if( c=='\\' ){ - c = z[++j]; - if( c=='"' || c=='\\' || c=='/' || c=='b' || c=='f' - || c=='n' || c=='r' || c=='t' - || (c=='u' && jsonIs4Hex(z+j+1)) ){ - jnFlags = JNODE_ESCAPE; - }else{ - return -1; - } - }else if( c=='"' ){ - break; - } - j++; - } - jsonParseAddNode(pParse, JSON_STRING, j+1-i, &z[i]); - if( !pParse->oom ) pParse->aNode[pParse->nNode-1].jnFlags = jnFlags; - return j+1; - }else if( c=='n' - && strncmp(z+i,"null",4)==0 - && !safe_isalnum(z[i+4]) ){ - jsonParseAddNode(pParse, JSON_NULL, 0, 0); - return i+4; - }else if( c=='t' - && strncmp(z+i,"true",4)==0 - && !safe_isalnum(z[i+4]) ){ - jsonParseAddNode(pParse, JSON_TRUE, 0, 0); - return i+4; - }else if( c=='f' - && strncmp(z+i,"false",5)==0 - && !safe_isalnum(z[i+5]) ){ - jsonParseAddNode(pParse, JSON_FALSE, 0, 0); - return i+5; - }else if( c=='-' || (c>='0' && c<='9') ){ - /* Parse number */ - u8 seenDP = 0; - u8 seenE = 0; - assert( '-' < '0' ); - if( c<='0' ){ - j = c=='-' ? i+1 : i; - if( z[j]=='0' && z[j+1]>='0' && z[j+1]<='9' ) return -1; - } - j = i+1; - for(;; j++){ - c = z[j]; - if( c>='0' && c<='9' ) continue; - if( c=='.' ){ - if( z[j-1]=='-' ) return -1; - if( seenDP ) return -1; - seenDP = 1; - continue; - } - if( c=='e' || c=='E' ){ - if( z[j-1]<'0' ) return -1; - if( seenE ) return -1; - seenDP = seenE = 1; - c = z[j+1]; - if( c=='+' || c=='-' ){ - j++; - c = z[j+1]; - } - if( c<'0' || c>'9' ) return -1; - continue; - } - break; - } - if( z[j-1]<'0' ) return -1; - jsonParseAddNode(pParse, seenDP ? JSON_REAL : JSON_INT, - j - i, &z[i]); - return j; - }else if( c=='}' ){ - return -2; /* End of {...} */ - }else if( c==']' ){ - return -3; /* End of [...] */ - }else if( c==0 ){ - return 0; /* End of file */ - }else{ - return -1; /* Syntax error */ - } -} - -/* -** Parse a complete JSON string. Return 0 on success or non-zero if there -** are any errors. If an error occurs, free all memory associated with -** pParse. -** -** pParse is uninitialized when this routine is called. -*/ -static int jsonParse( - JsonParse *pParse, /* Initialize and fill this JsonParse object */ - sqlite3_context *pCtx, /* Report errors here */ - const char *zJson /* Input JSON text to be parsed */ -){ - int i; - memset(pParse, 0, sizeof(*pParse)); - if( zJson==0 ) return 1; - pParse->zJson = zJson; - i = jsonParseValue(pParse, 0); - if( pParse->oom ) i = -1; - if( i>0 ){ - assert( pParse->iDepth==0 ); - while( safe_isspace(zJson[i]) ) i++; - if( zJson[i] ) i = -1; - } - if( i<=0 ){ - if( pCtx!=0 ){ - if( pParse->oom ){ - sqlite3_result_error_nomem(pCtx); - }else{ - sqlite3_result_error(pCtx, "malformed JSON", -1); - } - } - jsonParseReset(pParse); - return 1; - } - return 0; -} - -/* Mark node i of pParse as being a child of iParent. Call recursively -** to fill in all the descendants of node i. -*/ -static void jsonParseFillInParentage(JsonParse *pParse, u32 i, u32 iParent){ - JsonNode *pNode = &pParse->aNode[i]; - u32 j; - pParse->aUp[i] = iParent; - switch( pNode->eType ){ - case JSON_ARRAY: { - for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j)){ - jsonParseFillInParentage(pParse, i+j, i); - } - break; - } - case JSON_OBJECT: { - for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j+1)+1){ - pParse->aUp[i+j] = i; - jsonParseFillInParentage(pParse, i+j+1, i); - } - break; - } - default: { - break; - } - } -} - -/* -** Compute the parentage of all nodes in a completed parse. -*/ -static int jsonParseFindParents(JsonParse *pParse){ - u32 *aUp; - assert( pParse->aUp==0 ); - aUp = pParse->aUp = sqlite3_malloc( sizeof(u32)*pParse->nNode ); - if( aUp==0 ){ - pParse->oom = 1; - return SQLITE_NOMEM; - } - jsonParseFillInParentage(pParse, 0, 0); - return SQLITE_OK; -} - -/* -** Magic number used for the JSON parse cache in sqlite3_get_auxdata() -*/ -#define JSON_CACHE_ID (-429938) - -/* -** Obtain a complete parse of the JSON found in the first argument -** of the argv array. Use the sqlite3_get_auxdata() cache for this -** parse if it is available. If the cache is not available or if it -** is no longer valid, parse the JSON again and return the new parse, -** and also register the new parse so that it will be available for -** future sqlite3_get_auxdata() calls. -*/ -static JsonParse *jsonParseCached( - sqlite3_context *pCtx, - sqlite3_value **argv -){ - const char *zJson = (const char*)sqlite3_value_text(argv[0]); - int nJson = sqlite3_value_bytes(argv[0]); - JsonParse *p; - if( zJson==0 ) return 0; - p = (JsonParse*)sqlite3_get_auxdata(pCtx, JSON_CACHE_ID); - if( p && p->nJson==nJson && memcmp(p->zJson,zJson,nJson)==0 ){ - p->nErr = 0; - return p; /* The cached entry matches, so return it */ - } - p = sqlite3_malloc( sizeof(*p) + nJson + 1 ); - if( p==0 ){ - sqlite3_result_error_nomem(pCtx); - return 0; - } - memset(p, 0, sizeof(*p)); - p->zJson = (char*)&p[1]; - memcpy((char*)p->zJson, zJson, nJson+1); - if( jsonParse(p, pCtx, p->zJson) ){ - sqlite3_free(p); - return 0; - } - p->nJson = nJson; - sqlite3_set_auxdata(pCtx, JSON_CACHE_ID, p, (void(*)(void*))jsonParseFree); - return (JsonParse*)sqlite3_get_auxdata(pCtx, JSON_CACHE_ID); -} - -/* -** Compare the OBJECT label at pNode against zKey,nKey. Return true on -** a match. -*/ -static int jsonLabelCompare(JsonNode *pNode, const char *zKey, u32 nKey){ - if( pNode->jnFlags & JNODE_RAW ){ - if( pNode->n!=nKey ) return 0; - return strncmp(pNode->u.zJContent, zKey, nKey)==0; - }else{ - if( pNode->n!=nKey+2 ) return 0; - return strncmp(pNode->u.zJContent+1, zKey, nKey)==0; - } -} - -/* forward declaration */ -static JsonNode *jsonLookupAppend(JsonParse*,const char*,int*,const char**); - -/* -** Search along zPath to find the node specified. Return a pointer -** to that node, or NULL if zPath is malformed or if there is no such -** node. -** -** If pApnd!=0, then try to append new nodes to complete zPath if it is -** possible to do so and if no existing node corresponds to zPath. If -** new nodes are appended *pApnd is set to 1. -*/ -static JsonNode *jsonLookupStep( - JsonParse *pParse, /* The JSON to search */ - u32 iRoot, /* Begin the search at this node */ - const char *zPath, /* The path to search */ - int *pApnd, /* Append nodes to complete path if not NULL */ - const char **pzErr /* Make *pzErr point to any syntax error in zPath */ -){ - u32 i, j, nKey; - const char *zKey; - JsonNode *pRoot = &pParse->aNode[iRoot]; - if( zPath[0]==0 ) return pRoot; - if( zPath[0]=='.' ){ - if( pRoot->eType!=JSON_OBJECT ) return 0; - zPath++; - if( zPath[0]=='"' ){ - zKey = zPath + 1; - for(i=1; zPath[i] && zPath[i]!='"'; i++){} - nKey = i-1; - if( zPath[i] ){ - i++; - }else{ - *pzErr = zPath; - return 0; - } - }else{ - zKey = zPath; - for(i=0; zPath[i] && zPath[i]!='.' && zPath[i]!='['; i++){} - nKey = i; - } - if( nKey==0 ){ - *pzErr = zPath; - return 0; - } - j = 1; - for(;;){ - while( j<=pRoot->n ){ - if( jsonLabelCompare(pRoot+j, zKey, nKey) ){ - return jsonLookupStep(pParse, iRoot+j+1, &zPath[i], pApnd, pzErr); - } - j++; - j += jsonNodeSize(&pRoot[j]); - } - if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; - iRoot += pRoot->u.iAppend; - pRoot = &pParse->aNode[iRoot]; - j = 1; - } - if( pApnd ){ - u32 iStart, iLabel; - JsonNode *pNode; - iStart = jsonParseAddNode(pParse, JSON_OBJECT, 2, 0); - iLabel = jsonParseAddNode(pParse, JSON_STRING, i, zPath); - zPath += i; - pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); - if( pParse->oom ) return 0; - if( pNode ){ - pRoot = &pParse->aNode[iRoot]; - pRoot->u.iAppend = iStart - iRoot; - pRoot->jnFlags |= JNODE_APPEND; - pParse->aNode[iLabel].jnFlags |= JNODE_RAW; - } - return pNode; - } - }else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){ - if( pRoot->eType!=JSON_ARRAY ) return 0; - i = 0; - j = 1; - while( safe_isdigit(zPath[j]) ){ - i = i*10 + zPath[j] - '0'; - j++; - } - if( zPath[j]!=']' ){ - *pzErr = zPath; - return 0; - } - zPath += j + 1; - j = 1; - for(;;){ - while( j<=pRoot->n && (i>0 || (pRoot[j].jnFlags & JNODE_REMOVE)!=0) ){ - if( (pRoot[j].jnFlags & JNODE_REMOVE)==0 ) i--; - j += jsonNodeSize(&pRoot[j]); - } - if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; - iRoot += pRoot->u.iAppend; - pRoot = &pParse->aNode[iRoot]; - j = 1; - } - if( j<=pRoot->n ){ - return jsonLookupStep(pParse, iRoot+j, zPath, pApnd, pzErr); - } - if( i==0 && pApnd ){ - u32 iStart; - JsonNode *pNode; - iStart = jsonParseAddNode(pParse, JSON_ARRAY, 1, 0); - pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); - if( pParse->oom ) return 0; - if( pNode ){ - pRoot = &pParse->aNode[iRoot]; - pRoot->u.iAppend = iStart - iRoot; - pRoot->jnFlags |= JNODE_APPEND; - } - return pNode; - } - }else{ - *pzErr = zPath; - } - return 0; -} - -/* -** Append content to pParse that will complete zPath. Return a pointer -** to the inserted node, or return NULL if the append fails. -*/ -static JsonNode *jsonLookupAppend( - JsonParse *pParse, /* Append content to the JSON parse */ - const char *zPath, /* Description of content to append */ - int *pApnd, /* Set this flag to 1 */ - const char **pzErr /* Make this point to any syntax error */ -){ - *pApnd = 1; - if( zPath[0]==0 ){ - jsonParseAddNode(pParse, JSON_NULL, 0, 0); - return pParse->oom ? 0 : &pParse->aNode[pParse->nNode-1]; - } - if( zPath[0]=='.' ){ - jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); - }else if( strncmp(zPath,"[0]",3)==0 ){ - jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); - }else{ - return 0; - } - if( pParse->oom ) return 0; - return jsonLookupStep(pParse, pParse->nNode-1, zPath, pApnd, pzErr); -} - -/* -** Return the text of a syntax error message on a JSON path. Space is -** obtained from sqlite3_malloc(). -*/ -static char *jsonPathSyntaxError(const char *zErr){ - return sqlite3_mprintf("JSON path error near '%q'", zErr); -} - -/* -** Do a node lookup using zPath. Return a pointer to the node on success. -** Return NULL if not found or if there is an error. -** -** On an error, write an error message into pCtx and increment the -** pParse->nErr counter. -** -** If pApnd!=NULL then try to append missing nodes and set *pApnd = 1 if -** nodes are appended. -*/ -static JsonNode *jsonLookup( - JsonParse *pParse, /* The JSON to search */ - const char *zPath, /* The path to search */ - int *pApnd, /* Append nodes to complete path if not NULL */ - sqlite3_context *pCtx /* Report errors here, if not NULL */ -){ - const char *zErr = 0; - JsonNode *pNode = 0; - char *zMsg; - - if( zPath==0 ) return 0; - if( zPath[0]!='$' ){ - zErr = zPath; - goto lookup_err; - } - zPath++; - pNode = jsonLookupStep(pParse, 0, zPath, pApnd, &zErr); - if( zErr==0 ) return pNode; - -lookup_err: - pParse->nErr++; - assert( zErr!=0 && pCtx!=0 ); - zMsg = jsonPathSyntaxError(zErr); - if( zMsg ){ - sqlite3_result_error(pCtx, zMsg, -1); - sqlite3_free(zMsg); - }else{ - sqlite3_result_error_nomem(pCtx); - } - return 0; -} - - -/* -** Report the wrong number of arguments for json_insert(), json_replace() -** or json_set(). -*/ -static void jsonWrongNumArgs( - sqlite3_context *pCtx, - const char *zFuncName -){ - char *zMsg = sqlite3_mprintf("json_%s() needs an odd number of arguments", - zFuncName); - sqlite3_result_error(pCtx, zMsg, -1); - sqlite3_free(zMsg); -} - -/* -** Mark all NULL entries in the Object passed in as JNODE_REMOVE. -*/ -static void jsonRemoveAllNulls(JsonNode *pNode){ - int i, n; - assert( pNode->eType==JSON_OBJECT ); - n = pNode->n; - for(i=2; i<=n; i += jsonNodeSize(&pNode[i])+1){ - switch( pNode[i].eType ){ - case JSON_NULL: - pNode[i].jnFlags |= JNODE_REMOVE; - break; - case JSON_OBJECT: - jsonRemoveAllNulls(&pNode[i]); - break; - } - } -} - - -/**************************************************************************** -** SQL functions used for testing and debugging -****************************************************************************/ - -#ifdef SQLITE_DEBUG -/* -** The json_parse(JSON) function returns a string which describes -** a parse of the JSON provided. Or it returns NULL if JSON is not -** well-formed. -*/ -static void jsonParseFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonString s; /* Output string - not real JSON */ - JsonParse x; /* The parse */ - u32 i; - - assert( argc==1 ); - if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; - jsonParseFindParents(&x); - jsonInit(&s, ctx); - for(i=0; inNode ); - if( argc==2 ){ - const char *zPath = (const char*)sqlite3_value_text(argv[1]); - pNode = jsonLookup(p, zPath, 0, ctx); - }else{ - pNode = p->aNode; - } - if( pNode==0 ){ - return; - } - if( pNode->eType==JSON_ARRAY ){ - assert( (pNode->jnFlags & JNODE_APPEND)==0 ); - for(i=1; i<=pNode->n; n++){ - i += jsonNodeSize(&pNode[i]); - } - } - sqlite3_result_int64(ctx, n); -} - -/* -** json_extract(JSON, PATH, ...) -** -** Return the element described by PATH. Return NULL if there is no -** PATH element. If there are multiple PATHs, then return a JSON array -** with the result from each path. Throw an error if the JSON or any PATH -** is malformed. -*/ -static void jsonExtractFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse *p; /* The parse */ - JsonNode *pNode; - const char *zPath; - JsonString jx; - int i; - - if( argc<2 ) return; - p = jsonParseCached(ctx, argv); - if( p==0 ) return; - jsonInit(&jx, ctx); - jsonAppendChar(&jx, '['); - for(i=1; inErr ) break; - if( argc>2 ){ - jsonAppendSeparator(&jx); - if( pNode ){ - jsonRenderNode(pNode, &jx, 0); - }else{ - jsonAppendRaw(&jx, "null", 4); - } - }else if( pNode ){ - jsonReturn(pNode, ctx, 0); - } - } - if( argc>2 && i==argc ){ - jsonAppendChar(&jx, ']'); - jsonResult(&jx); - sqlite3_result_subtype(ctx, JSON_SUBTYPE); - } - jsonReset(&jx); -} - -/* This is the RFC 7396 MergePatch algorithm. -*/ -static JsonNode *jsonMergePatch( - JsonParse *pParse, /* The JSON parser that contains the TARGET */ - u32 iTarget, /* Node of the TARGET in pParse */ - JsonNode *pPatch /* The PATCH */ -){ - u32 i, j; - u32 iRoot; - JsonNode *pTarget; - if( pPatch->eType!=JSON_OBJECT ){ - return pPatch; - } - assert( iTarget>=0 && iTargetnNode ); - pTarget = &pParse->aNode[iTarget]; - assert( (pPatch->jnFlags & JNODE_APPEND)==0 ); - if( pTarget->eType!=JSON_OBJECT ){ - jsonRemoveAllNulls(pPatch); - return pPatch; - } - iRoot = iTarget; - for(i=1; in; i += jsonNodeSize(&pPatch[i+1])+1){ - u32 nKey; - const char *zKey; - assert( pPatch[i].eType==JSON_STRING ); - assert( pPatch[i].jnFlags & JNODE_LABEL ); - nKey = pPatch[i].n; - zKey = pPatch[i].u.zJContent; - assert( (pPatch[i].jnFlags & JNODE_RAW)==0 ); - for(j=1; jn; j += jsonNodeSize(&pTarget[j+1])+1 ){ - assert( pTarget[j].eType==JSON_STRING ); - assert( pTarget[j].jnFlags & JNODE_LABEL ); - assert( (pPatch[i].jnFlags & JNODE_RAW)==0 ); - if( pTarget[j].n==nKey && strncmp(pTarget[j].u.zJContent,zKey,nKey)==0 ){ - if( pTarget[j+1].jnFlags & (JNODE_REMOVE|JNODE_PATCH) ) break; - if( pPatch[i+1].eType==JSON_NULL ){ - pTarget[j+1].jnFlags |= JNODE_REMOVE; - }else{ - JsonNode *pNew = jsonMergePatch(pParse, iTarget+j+1, &pPatch[i+1]); - if( pNew==0 ) return 0; - pTarget = &pParse->aNode[iTarget]; - if( pNew!=&pTarget[j+1] ){ - pTarget[j+1].u.pPatch = pNew; - pTarget[j+1].jnFlags |= JNODE_PATCH; - } - } - break; - } - } - if( j>=pTarget->n && pPatch[i+1].eType!=JSON_NULL ){ - int iStart, iPatch; - iStart = jsonParseAddNode(pParse, JSON_OBJECT, 2, 0); - jsonParseAddNode(pParse, JSON_STRING, nKey, zKey); - iPatch = jsonParseAddNode(pParse, JSON_TRUE, 0, 0); - if( pParse->oom ) return 0; - jsonRemoveAllNulls(pPatch); - pTarget = &pParse->aNode[iTarget]; - pParse->aNode[iRoot].jnFlags |= JNODE_APPEND; - pParse->aNode[iRoot].u.iAppend = iStart - iRoot; - iRoot = iStart; - pParse->aNode[iPatch].jnFlags |= JNODE_PATCH; - pParse->aNode[iPatch].u.pPatch = &pPatch[i+1]; - } - } - return pTarget; -} - -/* -** Implementation of the json_mergepatch(JSON1,JSON2) function. Return a JSON -** object that is the result of running the RFC 7396 MergePatch() algorithm -** on the two arguments. -*/ -static void jsonPatchFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse x; /* The JSON that is being patched */ - JsonParse y; /* The patch */ - JsonNode *pResult; /* The result of the merge */ - - UNUSED_PARAM(argc); - if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; - if( jsonParse(&y, ctx, (const char*)sqlite3_value_text(argv[1])) ){ - jsonParseReset(&x); - return; - } - pResult = jsonMergePatch(&x, 0, y.aNode); - assert( pResult!=0 || x.oom ); - if( pResult ){ - jsonReturnJson(pResult, ctx, 0); - }else{ - sqlite3_result_error_nomem(ctx); - } - jsonParseReset(&x); - jsonParseReset(&y); -} - - -/* -** Implementation of the json_object(NAME,VALUE,...) function. Return a JSON -** object that contains all name/value given in arguments. Or if any name -** is not a string or if any value is a BLOB, throw an error. -*/ -static void jsonObjectFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - int i; - JsonString jx; - const char *z; - u32 n; - - if( argc&1 ){ - sqlite3_result_error(ctx, "json_object() requires an even number " - "of arguments", -1); - return; - } - jsonInit(&jx, ctx); - jsonAppendChar(&jx, '{'); - for(i=0; ijnFlags |= JNODE_REMOVE; - } - if( (x.aNode[0].jnFlags & JNODE_REMOVE)==0 ){ - jsonReturnJson(x.aNode, ctx, 0); - } -remove_done: - jsonParseReset(&x); -} - -/* -** json_replace(JSON, PATH, VALUE, ...) -** -** Replace the value at PATH with VALUE. If PATH does not already exist, -** this routine is a no-op. If JSON or PATH is malformed, throw an error. -*/ -static void jsonReplaceFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse x; /* The parse */ - JsonNode *pNode; - const char *zPath; - u32 i; - - if( argc<1 ) return; - if( (argc&1)==0 ) { - jsonWrongNumArgs(ctx, "replace"); - return; - } - if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; - assert( x.nNode ); - for(i=1; i<(u32)argc; i+=2){ - zPath = (const char*)sqlite3_value_text(argv[i]); - pNode = jsonLookup(&x, zPath, 0, ctx); - if( x.nErr ) goto replace_err; - if( pNode ){ - pNode->jnFlags |= (u8)JNODE_REPLACE; - pNode->u.iReplace = i + 1; - } - } - if( x.aNode[0].jnFlags & JNODE_REPLACE ){ - sqlite3_result_value(ctx, argv[x.aNode[0].u.iReplace]); - }else{ - jsonReturnJson(x.aNode, ctx, argv); - } -replace_err: - jsonParseReset(&x); -} - -/* -** json_set(JSON, PATH, VALUE, ...) -** -** Set the value at PATH to VALUE. Create the PATH if it does not already -** exist. Overwrite existing values that do exist. -** If JSON or PATH is malformed, throw an error. -** -** json_insert(JSON, PATH, VALUE, ...) -** -** Create PATH and initialize it to VALUE. If PATH already exists, this -** routine is a no-op. If JSON or PATH is malformed, throw an error. -*/ -static void jsonSetFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse x; /* The parse */ - JsonNode *pNode; - const char *zPath; - u32 i; - int bApnd; - int bIsSet = *(int*)sqlite3_user_data(ctx); - - if( argc<1 ) return; - if( (argc&1)==0 ) { - jsonWrongNumArgs(ctx, bIsSet ? "set" : "insert"); - return; - } - if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; - assert( x.nNode ); - for(i=1; i<(u32)argc; i+=2){ - zPath = (const char*)sqlite3_value_text(argv[i]); - bApnd = 0; - pNode = jsonLookup(&x, zPath, &bApnd, ctx); - if( x.oom ){ - sqlite3_result_error_nomem(ctx); - goto jsonSetDone; - }else if( x.nErr ){ - goto jsonSetDone; - }else if( pNode && (bApnd || bIsSet) ){ - pNode->jnFlags |= (u8)JNODE_REPLACE; - pNode->u.iReplace = i + 1; - } - } - if( x.aNode[0].jnFlags & JNODE_REPLACE ){ - sqlite3_result_value(ctx, argv[x.aNode[0].u.iReplace]); - }else{ - jsonReturnJson(x.aNode, ctx, argv); - } -jsonSetDone: - jsonParseReset(&x); -} - -/* -** json_type(JSON) -** json_type(JSON, PATH) -** -** Return the top-level "type" of a JSON string. Throw an error if -** either the JSON or PATH inputs are not well-formed. -*/ -static void jsonTypeFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse x; /* The parse */ - const char *zPath; - JsonNode *pNode; - - if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; - assert( x.nNode ); - if( argc==2 ){ - zPath = (const char*)sqlite3_value_text(argv[1]); - pNode = jsonLookup(&x, zPath, 0, ctx); - }else{ - pNode = x.aNode; - } - if( pNode ){ - sqlite3_result_text(ctx, jsonType[pNode->eType], -1, SQLITE_STATIC); - } - jsonParseReset(&x); -} - -/* -** json_valid(JSON) -** -** Return 1 if JSON is a well-formed JSON string according to RFC-7159. -** Return 0 otherwise. -*/ -static void jsonValidFunc( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonParse x; /* The parse */ - int rc = 0; - - UNUSED_PARAM(argc); - if( jsonParse(&x, 0, (const char*)sqlite3_value_text(argv[0]))==0 ){ - rc = 1; - } - jsonParseReset(&x); - sqlite3_result_int(ctx, rc); -} - - -/**************************************************************************** -** Aggregate SQL function implementations -****************************************************************************/ -/* -** json_group_array(VALUE) -** -** Return a JSON array composed of all values in the aggregate. -*/ -static void jsonArrayStep( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonString *pStr; - UNUSED_PARAM(argc); - pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr)); - if( pStr ){ - if( pStr->zBuf==0 ){ - jsonInit(pStr, ctx); - jsonAppendChar(pStr, '['); - }else{ - jsonAppendChar(pStr, ','); - pStr->pCtx = ctx; - } - jsonAppendValue(pStr, argv[0]); - } -} -static void jsonArrayFinal(sqlite3_context *ctx){ - JsonString *pStr; - pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0); - if( pStr ){ - pStr->pCtx = ctx; - jsonAppendChar(pStr, ']'); - if( pStr->bErr ){ - if( pStr->bErr==1 ) sqlite3_result_error_nomem(ctx); - assert( pStr->bStatic ); - }else{ - sqlite3_result_text(ctx, pStr->zBuf, pStr->nUsed, - pStr->bStatic ? SQLITE_TRANSIENT : sqlite3_free); - pStr->bStatic = 1; - } - }else{ - sqlite3_result_text(ctx, "[]", 2, SQLITE_STATIC); - } - sqlite3_result_subtype(ctx, JSON_SUBTYPE); -} - -/* -** json_group_obj(NAME,VALUE) -** -** Return a JSON object composed of all names and values in the aggregate. -*/ -static void jsonObjectStep( - sqlite3_context *ctx, - int argc, - sqlite3_value **argv -){ - JsonString *pStr; - const char *z; - u32 n; - UNUSED_PARAM(argc); - pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr)); - if( pStr ){ - if( pStr->zBuf==0 ){ - jsonInit(pStr, ctx); - jsonAppendChar(pStr, '{'); - }else{ - jsonAppendChar(pStr, ','); - pStr->pCtx = ctx; - } - z = (const char*)sqlite3_value_text(argv[0]); - n = (u32)sqlite3_value_bytes(argv[0]); - jsonAppendString(pStr, z, n); - jsonAppendChar(pStr, ':'); - jsonAppendValue(pStr, argv[1]); - } -} -static void jsonObjectFinal(sqlite3_context *ctx){ - JsonString *pStr; - pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0); - if( pStr ){ - jsonAppendChar(pStr, '}'); - if( pStr->bErr ){ - if( pStr->bErr==1 ) sqlite3_result_error_nomem(ctx); - assert( pStr->bStatic ); - }else{ - sqlite3_result_text(ctx, pStr->zBuf, pStr->nUsed, - pStr->bStatic ? SQLITE_TRANSIENT : sqlite3_free); - pStr->bStatic = 1; - } - }else{ - sqlite3_result_text(ctx, "{}", 2, SQLITE_STATIC); - } - sqlite3_result_subtype(ctx, JSON_SUBTYPE); -} - - -#ifndef SQLITE_OMIT_VIRTUALTABLE -/**************************************************************************** -** The json_each virtual table -****************************************************************************/ -typedef struct JsonEachCursor JsonEachCursor; -struct JsonEachCursor { - sqlite3_vtab_cursor base; /* Base class - must be first */ - u32 iRowid; /* The rowid */ - u32 iBegin; /* The first node of the scan */ - u32 i; /* Index in sParse.aNode[] of current row */ - u32 iEnd; /* EOF when i equals or exceeds this value */ - u8 eType; /* Type of top-level element */ - u8 bRecursive; /* True for json_tree(). False for json_each() */ - char *zJson; /* Input JSON */ - char *zRoot; /* Path by which to filter zJson */ - JsonParse sParse; /* Parse of the input JSON */ -}; - -/* Constructor for the json_each virtual table */ -static int jsonEachConnect( - sqlite3 *db, - void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVtab, - char **pzErr -){ - sqlite3_vtab *pNew; - int rc; - -/* Column numbers */ -#define JEACH_KEY 0 -#define JEACH_VALUE 1 -#define JEACH_TYPE 2 -#define JEACH_ATOM 3 -#define JEACH_ID 4 -#define JEACH_PARENT 5 -#define JEACH_FULLKEY 6 -#define JEACH_PATH 7 -#define JEACH_JSON 8 -#define JEACH_ROOT 9 - - UNUSED_PARAM(pzErr); - UNUSED_PARAM(argv); - UNUSED_PARAM(argc); - UNUSED_PARAM(pAux); - rc = sqlite3_declare_vtab(db, - "CREATE TABLE x(key,value,type,atom,id,parent,fullkey,path," - "json HIDDEN,root HIDDEN)"); - if( rc==SQLITE_OK ){ - pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) ); - if( pNew==0 ) return SQLITE_NOMEM; - memset(pNew, 0, sizeof(*pNew)); - } - return rc; -} - -/* destructor for json_each virtual table */ -static int jsonEachDisconnect(sqlite3_vtab *pVtab){ - sqlite3_free(pVtab); - return SQLITE_OK; -} - -/* constructor for a JsonEachCursor object for json_each(). */ -static int jsonEachOpenEach(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ - JsonEachCursor *pCur; - - UNUSED_PARAM(p); - pCur = sqlite3_malloc( sizeof(*pCur) ); - if( pCur==0 ) return SQLITE_NOMEM; - memset(pCur, 0, sizeof(*pCur)); - *ppCursor = &pCur->base; - return SQLITE_OK; -} - -/* constructor for a JsonEachCursor object for json_tree(). */ -static int jsonEachOpenTree(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ - int rc = jsonEachOpenEach(p, ppCursor); - if( rc==SQLITE_OK ){ - JsonEachCursor *pCur = (JsonEachCursor*)*ppCursor; - pCur->bRecursive = 1; - } - return rc; -} - -/* Reset a JsonEachCursor back to its original state. Free any memory -** held. */ -static void jsonEachCursorReset(JsonEachCursor *p){ - sqlite3_free(p->zJson); - sqlite3_free(p->zRoot); - jsonParseReset(&p->sParse); - p->iRowid = 0; - p->i = 0; - p->iEnd = 0; - p->eType = 0; - p->zJson = 0; - p->zRoot = 0; -} - -/* Destructor for a jsonEachCursor object */ -static int jsonEachClose(sqlite3_vtab_cursor *cur){ - JsonEachCursor *p = (JsonEachCursor*)cur; - jsonEachCursorReset(p); - sqlite3_free(cur); - return SQLITE_OK; -} - -/* Return TRUE if the jsonEachCursor object has been advanced off the end -** of the JSON object */ -static int jsonEachEof(sqlite3_vtab_cursor *cur){ - JsonEachCursor *p = (JsonEachCursor*)cur; - return p->i >= p->iEnd; -} - -/* Advance the cursor to the next element for json_tree() */ -static int jsonEachNext(sqlite3_vtab_cursor *cur){ - JsonEachCursor *p = (JsonEachCursor*)cur; - if( p->bRecursive ){ - if( p->sParse.aNode[p->i].jnFlags & JNODE_LABEL ) p->i++; - p->i++; - p->iRowid++; - if( p->iiEnd ){ - u32 iUp = p->sParse.aUp[p->i]; - JsonNode *pUp = &p->sParse.aNode[iUp]; - p->eType = pUp->eType; - if( pUp->eType==JSON_ARRAY ){ - if( iUp==p->i-1 ){ - pUp->u.iKey = 0; - }else{ - pUp->u.iKey++; - } - } - } - }else{ - switch( p->eType ){ - case JSON_ARRAY: { - p->i += jsonNodeSize(&p->sParse.aNode[p->i]); - p->iRowid++; - break; - } - case JSON_OBJECT: { - p->i += 1 + jsonNodeSize(&p->sParse.aNode[p->i+1]); - p->iRowid++; - break; - } - default: { - p->i = p->iEnd; - break; - } - } - } - return SQLITE_OK; -} - -/* Append the name of the path for element i to pStr -*/ -static void jsonEachComputePath( - JsonEachCursor *p, /* The cursor */ - JsonString *pStr, /* Write the path here */ - u32 i /* Path to this element */ -){ - JsonNode *pNode, *pUp; - u32 iUp; - if( i==0 ){ - jsonAppendChar(pStr, '$'); - return; - } - iUp = p->sParse.aUp[i]; - jsonEachComputePath(p, pStr, iUp); - pNode = &p->sParse.aNode[i]; - pUp = &p->sParse.aNode[iUp]; - if( pUp->eType==JSON_ARRAY ){ - jsonPrintf(30, pStr, "[%d]", pUp->u.iKey); - }else{ - assert( pUp->eType==JSON_OBJECT ); - if( (pNode->jnFlags & JNODE_LABEL)==0 ) pNode--; - assert( pNode->eType==JSON_STRING ); - assert( pNode->jnFlags & JNODE_LABEL ); - jsonPrintf(pNode->n+1, pStr, ".%.*s", pNode->n-2, pNode->u.zJContent+1); - } -} - -/* Return the value of a column */ -static int jsonEachColumn( - sqlite3_vtab_cursor *cur, /* The cursor */ - sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ - int i /* Which column to return */ -){ - JsonEachCursor *p = (JsonEachCursor*)cur; - JsonNode *pThis = &p->sParse.aNode[p->i]; - switch( i ){ - case JEACH_KEY: { - if( p->i==0 ) break; - if( p->eType==JSON_OBJECT ){ - jsonReturn(pThis, ctx, 0); - }else if( p->eType==JSON_ARRAY ){ - u32 iKey; - if( p->bRecursive ){ - if( p->iRowid==0 ) break; - iKey = p->sParse.aNode[p->sParse.aUp[p->i]].u.iKey; - }else{ - iKey = p->iRowid; - } - sqlite3_result_int64(ctx, (sqlite3_int64)iKey); - } - break; - } - case JEACH_VALUE: { - if( pThis->jnFlags & JNODE_LABEL ) pThis++; - jsonReturn(pThis, ctx, 0); - break; - } - case JEACH_TYPE: { - if( pThis->jnFlags & JNODE_LABEL ) pThis++; - sqlite3_result_text(ctx, jsonType[pThis->eType], -1, SQLITE_STATIC); - break; - } - case JEACH_ATOM: { - if( pThis->jnFlags & JNODE_LABEL ) pThis++; - if( pThis->eType>=JSON_ARRAY ) break; - jsonReturn(pThis, ctx, 0); - break; - } - case JEACH_ID: { - sqlite3_result_int64(ctx, - (sqlite3_int64)p->i + ((pThis->jnFlags & JNODE_LABEL)!=0)); - break; - } - case JEACH_PARENT: { - if( p->i>p->iBegin && p->bRecursive ){ - sqlite3_result_int64(ctx, (sqlite3_int64)p->sParse.aUp[p->i]); - } - break; - } - case JEACH_FULLKEY: { - JsonString x; - jsonInit(&x, ctx); - if( p->bRecursive ){ - jsonEachComputePath(p, &x, p->i); - }else{ - if( p->zRoot ){ - jsonAppendRaw(&x, p->zRoot, (int)strlen(p->zRoot)); - }else{ - jsonAppendChar(&x, '$'); - } - if( p->eType==JSON_ARRAY ){ - jsonPrintf(30, &x, "[%d]", p->iRowid); - }else if( p->eType==JSON_OBJECT ){ - jsonPrintf(pThis->n, &x, ".%.*s", pThis->n-2, pThis->u.zJContent+1); - } - } - jsonResult(&x); - break; - } - case JEACH_PATH: { - if( p->bRecursive ){ - JsonString x; - jsonInit(&x, ctx); - jsonEachComputePath(p, &x, p->sParse.aUp[p->i]); - jsonResult(&x); - break; - } - /* For json_each() path and root are the same so fall through - ** into the root case */ - } - default: { - const char *zRoot = p->zRoot; - if( zRoot==0 ) zRoot = "$"; - sqlite3_result_text(ctx, zRoot, -1, SQLITE_STATIC); - break; - } - case JEACH_JSON: { - assert( i==JEACH_JSON ); - sqlite3_result_text(ctx, p->sParse.zJson, -1, SQLITE_STATIC); - break; - } - } - return SQLITE_OK; -} - -/* Return the current rowid value */ -static int jsonEachRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ - JsonEachCursor *p = (JsonEachCursor*)cur; - *pRowid = p->iRowid; - return SQLITE_OK; -} - -/* The query strategy is to look for an equality constraint on the json -** column. Without such a constraint, the table cannot operate. idxNum is -** 1 if the constraint is found, 3 if the constraint and zRoot are found, -** and 0 otherwise. -*/ -static int jsonEachBestIndex( - sqlite3_vtab *tab, - sqlite3_index_info *pIdxInfo -){ - int i; - int jsonIdx = -1; - int rootIdx = -1; - const struct sqlite3_index_constraint *pConstraint; - - UNUSED_PARAM(tab); - pConstraint = pIdxInfo->aConstraint; - for(i=0; inConstraint; i++, pConstraint++){ - if( pConstraint->usable==0 ) continue; - if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; - switch( pConstraint->iColumn ){ - case JEACH_JSON: jsonIdx = i; break; - case JEACH_ROOT: rootIdx = i; break; - default: /* no-op */ break; - } - } - if( jsonIdx<0 ){ - pIdxInfo->idxNum = 0; - pIdxInfo->estimatedCost = 1e99; - }else{ - pIdxInfo->estimatedCost = 1.0; - pIdxInfo->aConstraintUsage[jsonIdx].argvIndex = 1; - pIdxInfo->aConstraintUsage[jsonIdx].omit = 1; - if( rootIdx<0 ){ - pIdxInfo->idxNum = 1; - }else{ - pIdxInfo->aConstraintUsage[rootIdx].argvIndex = 2; - pIdxInfo->aConstraintUsage[rootIdx].omit = 1; - pIdxInfo->idxNum = 3; - } - } - return SQLITE_OK; -} - -/* Start a search on a new JSON string */ -static int jsonEachFilter( - sqlite3_vtab_cursor *cur, - int idxNum, const char *idxStr, - int argc, sqlite3_value **argv -){ - JsonEachCursor *p = (JsonEachCursor*)cur; - const char *z; - const char *zRoot = 0; - sqlite3_int64 n; - - UNUSED_PARAM(idxStr); - UNUSED_PARAM(argc); - jsonEachCursorReset(p); - if( idxNum==0 ) return SQLITE_OK; - z = (const char*)sqlite3_value_text(argv[0]); - if( z==0 ) return SQLITE_OK; - n = sqlite3_value_bytes(argv[0]); - p->zJson = sqlite3_malloc64( n+1 ); - if( p->zJson==0 ) return SQLITE_NOMEM; - memcpy(p->zJson, z, (size_t)n+1); - if( jsonParse(&p->sParse, 0, p->zJson) ){ - int rc = SQLITE_NOMEM; - if( p->sParse.oom==0 ){ - sqlite3_free(cur->pVtab->zErrMsg); - cur->pVtab->zErrMsg = sqlite3_mprintf("malformed JSON"); - if( cur->pVtab->zErrMsg ) rc = SQLITE_ERROR; - } - jsonEachCursorReset(p); - return rc; - }else if( p->bRecursive && jsonParseFindParents(&p->sParse) ){ - jsonEachCursorReset(p); - return SQLITE_NOMEM; - }else{ - JsonNode *pNode = 0; - if( idxNum==3 ){ - const char *zErr = 0; - zRoot = (const char*)sqlite3_value_text(argv[1]); - if( zRoot==0 ) return SQLITE_OK; - n = sqlite3_value_bytes(argv[1]); - p->zRoot = sqlite3_malloc64( n+1 ); - if( p->zRoot==0 ) return SQLITE_NOMEM; - memcpy(p->zRoot, zRoot, (size_t)n+1); - if( zRoot[0]!='$' ){ - zErr = zRoot; - }else{ - pNode = jsonLookupStep(&p->sParse, 0, p->zRoot+1, 0, &zErr); - } - if( zErr ){ - sqlite3_free(cur->pVtab->zErrMsg); - cur->pVtab->zErrMsg = jsonPathSyntaxError(zErr); - jsonEachCursorReset(p); - return cur->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM; - }else if( pNode==0 ){ - return SQLITE_OK; - } - }else{ - pNode = p->sParse.aNode; - } - p->iBegin = p->i = (int)(pNode - p->sParse.aNode); - p->eType = pNode->eType; - if( p->eType>=JSON_ARRAY ){ - pNode->u.iKey = 0; - p->iEnd = p->i + pNode->n + 1; - if( p->bRecursive ){ - p->eType = p->sParse.aNode[p->sParse.aUp[p->i]].eType; - if( p->i>0 && (p->sParse.aNode[p->i-1].jnFlags & JNODE_LABEL)!=0 ){ - p->i--; - } - }else{ - p->i++; - } - }else{ - p->iEnd = p->i+1; - } - } - return SQLITE_OK; -} - -/* The methods of the json_each virtual table */ -static sqlite3_module jsonEachModule = { - 0, /* iVersion */ - 0, /* xCreate */ - jsonEachConnect, /* xConnect */ - jsonEachBestIndex, /* xBestIndex */ - jsonEachDisconnect, /* xDisconnect */ - 0, /* xDestroy */ - jsonEachOpenEach, /* xOpen - open a cursor */ - jsonEachClose, /* xClose - close a cursor */ - jsonEachFilter, /* xFilter - configure scan constraints */ - jsonEachNext, /* xNext - advance a cursor */ - jsonEachEof, /* xEof - check for end of scan */ - jsonEachColumn, /* xColumn - read data */ - jsonEachRowid, /* xRowid - read data */ - 0, /* xUpdate */ - 0, /* xBegin */ - 0, /* xSync */ - 0, /* xCommit */ - 0, /* xRollback */ - 0, /* xFindMethod */ - 0, /* xRename */ - 0, /* xSavepoint */ - 0, /* xRelease */ - 0 /* xRollbackTo */ -}; - -/* The methods of the json_tree virtual table. */ -static sqlite3_module jsonTreeModule = { - 0, /* iVersion */ - 0, /* xCreate */ - jsonEachConnect, /* xConnect */ - jsonEachBestIndex, /* xBestIndex */ - jsonEachDisconnect, /* xDisconnect */ - 0, /* xDestroy */ - jsonEachOpenTree, /* xOpen - open a cursor */ - jsonEachClose, /* xClose - close a cursor */ - jsonEachFilter, /* xFilter - configure scan constraints */ - jsonEachNext, /* xNext - advance a cursor */ - jsonEachEof, /* xEof - check for end of scan */ - jsonEachColumn, /* xColumn - read data */ - jsonEachRowid, /* xRowid - read data */ - 0, /* xUpdate */ - 0, /* xBegin */ - 0, /* xSync */ - 0, /* xCommit */ - 0, /* xRollback */ - 0, /* xFindMethod */ - 0, /* xRename */ - 0, /* xSavepoint */ - 0, /* xRelease */ - 0 /* xRollbackTo */ -}; -#endif /* SQLITE_OMIT_VIRTUALTABLE */ - -/**************************************************************************** -** The following routines are the only publically visible identifiers in this -** file. Call the following routines in order to register the various SQL -** functions and the virtual table implemented by this file. -****************************************************************************/ - -SQLITE_PRIVATE int sqlite3Json1Init(sqlite3 *db){ - int rc = SQLITE_OK; - unsigned int i; - static const struct { - const char *zName; - int nArg; - int flag; - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); - } aFunc[] = { - { "json", 1, 0, jsonRemoveFunc }, - { "json_array", -1, 0, jsonArrayFunc }, - { "json_array_length", 1, 0, jsonArrayLengthFunc }, - { "json_array_length", 2, 0, jsonArrayLengthFunc }, - { "json_extract", -1, 0, jsonExtractFunc }, - { "json_insert", -1, 0, jsonSetFunc }, - { "json_object", -1, 0, jsonObjectFunc }, - { "json_patch", 2, 0, jsonPatchFunc }, - { "json_quote", 1, 0, jsonQuoteFunc }, - { "json_remove", -1, 0, jsonRemoveFunc }, - { "json_replace", -1, 0, jsonReplaceFunc }, - { "json_set", -1, 1, jsonSetFunc }, - { "json_type", 1, 0, jsonTypeFunc }, - { "json_type", 2, 0, jsonTypeFunc }, - { "json_valid", 1, 0, jsonValidFunc }, - -#if SQLITE_DEBUG - /* DEBUG and TESTING functions */ - { "json_parse", 1, 0, jsonParseFunc }, - { "json_test1", 1, 0, jsonTest1Func }, -#endif - }; - static const struct { - const char *zName; - int nArg; - void (*xStep)(sqlite3_context*,int,sqlite3_value**); - void (*xFinal)(sqlite3_context*); - } aAgg[] = { - { "json_group_array", 1, jsonArrayStep, jsonArrayFinal }, - { "json_group_object", 2, jsonObjectStep, jsonObjectFinal }, - }; -#ifndef SQLITE_OMIT_VIRTUALTABLE - static const struct { - const char *zName; - sqlite3_module *pModule; - } aMod[] = { - { "json_each", &jsonEachModule }, - { "json_tree", &jsonTreeModule }, - }; -#endif - for(i=0; i FTS5_TOKENIZE_QUERY - A MATCH query is being executed -** against the FTS index. The tokenizer is being called to tokenize +**
              • FTS5_TOKENIZE_QUERY - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize ** a bareword or quoted string specified as part of the query. ** **
              • (FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX) - Same as @@ -190541,10 +226154,10 @@ struct Fts5ExtensionApi { ** followed by a "*" character, indicating that the last token ** returned by the tokenizer will be treated as a token prefix. ** -**
              • FTS5_TOKENIZE_AUX - The tokenizer is being invoked to +**
              • FTS5_TOKENIZE_AUX - The tokenizer is being invoked to ** satisfy an fts5_api.xTokenize() request made by an auxiliary ** function. Or an fts5_api.xColumnSize() request made by the same -** on a columnsize=0 database. +** on a columnsize=0 database. ** ** ** For each token in the input string, the supplied callback xToken() must @@ -190556,10 +226169,10 @@ struct Fts5ExtensionApi { ** which the token is derived within the input. ** ** The second argument passed to the xToken() callback ("tflags") should -** normally be set to 0. The exception is if the tokenizer supports +** normally be set to 0. The exception is if the tokenizer supports ** synonyms. In this case see the discussion below for details. ** -** FTS5 assumes the xToken() callback is invoked for each token in the +** FTS5 assumes the xToken() callback is invoked for each token in the ** order that they occur within the input text. ** ** If an xToken() callback returns any value other than SQLITE_OK, then @@ -190573,7 +226186,7 @@ struct Fts5ExtensionApi { ** SYNONYM SUPPORT ** ** Custom tokenizers may also support synonyms. Consider a case in which a -** user wishes to query for a phrase such as "first place". Using the +** user wishes to query for a phrase such as "first place". Using the ** built-in tokenizers, the FTS5 query 'first + place' will match instances ** of "first place" within the document set, but not alternative forms ** such as "1st place". In some applications, it would be better to match @@ -190582,8 +226195,8 @@ struct Fts5ExtensionApi { ** ** There are several ways to approach this in FTS5: ** -**
                1. By mapping all synonyms to a single token. In this case, the -** In the above example, this means that the tokenizer returns the +**
                  1. By mapping all synonyms to a single token. In this case, using +** the above example, this means that the tokenizer returns the ** same token for inputs "first" and "1st". Say that token is in ** fact "first", so that when the user inserts the document "I won ** 1st place" entries are added to the index for tokens "i", "won", @@ -190591,37 +226204,37 @@ struct Fts5ExtensionApi { ** the tokenizer substitutes "first" for "1st" and the query works ** as expected. ** -**
                  2. By adding multiple synonyms for a single term to the FTS index. -** In this case, when tokenizing query text, the tokenizer may -** provide multiple synonyms for a single term within the document. -** FTS5 then queries the index for each synonym individually. For -** example, faced with the query: +**
                  3. By querying the index for all synonyms of each query term +** separately. In this case, when tokenizing query text, the +** tokenizer may provide multiple synonyms for a single term +** within the document. FTS5 then queries the index for each +** synonym individually. For example, faced with the query: ** ** ** ... MATCH 'first place' ** ** the tokenizer offers both "1st" and "first" as synonyms for the -** first token in the MATCH query and FTS5 effectively runs a query +** first token in the MATCH query and FTS5 effectively runs a query ** similar to: ** ** ** ... MATCH '(first OR 1st) place' ** ** except that, for the purposes of auxiliary functions, the query -** still appears to contain just two phrases - "(first OR 1st)" +** still appears to contain just two phrases - "(first OR 1st)" ** being treated as a single phrase. ** **
                  4. By adding multiple synonyms for a single term to the FTS index. ** Using this method, when tokenizing document text, the tokenizer -** provides multiple synonyms for each token. So that when a +** provides multiple synonyms for each token. So that when a ** document such as "I won first place" is tokenized, entries are ** added to the FTS index for "i", "won", "first", "1st" and ** "place". ** ** This way, even if the tokenizer does not provide synonyms -** when tokenizing query text (it should not - to do would be -** inefficient), it doesn't matter if the user queries for -** 'first + place' or '1st + place', as there are entires in the +** when tokenizing query text (it should not - to do so would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entries in the ** FTS index corresponding to both forms of the first token. **
                  ** @@ -190641,15 +226254,15 @@ struct Fts5ExtensionApi { ** ** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time ** xToken() is called. Multiple synonyms may be specified for a single token -** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. ** There is no limit to the number of synonyms that may be provided for a ** single token. ** -** In many cases, method (1) above is the best approach. It does not add +** In many cases, method (1) above is the best approach. It does not add ** extra data to the FTS index or require FTS5 to query for multiple terms, ** so it is efficient in terms of disk space and query speed. However, it ** does not support prefix queries very well. If, as suggested above, the -** token "first" is subsituted for "1st" by the tokenizer, then the query: +** token "first" is substituted for "1st" by the tokenizer, then the query: ** ** ** ... MATCH '1s*' @@ -190657,24 +226270,24 @@ struct Fts5ExtensionApi { ** will not match documents that contain the token "1st" (as the tokenizer ** will probably not map "1s" to any prefix of "first"). ** -** For full prefix support, method (3) may be preferred. In this case, +** For full prefix support, method (3) may be preferred. In this case, ** because the index contains entries for both "first" and "1st", prefix ** queries such as 'fi*' or '1s*' will match correctly. However, because ** extra entries are added to the FTS index, this method uses more space ** within the database. ** ** Method (2) offers a midpoint between (1) and (3). Using this method, -** a query such as '1s*' will match documents that contain the literal +** a query such as '1s*' will match documents that contain the literal ** token "1st", but not "first" (assuming the tokenizer is not able to ** provide synonyms for prefixes). However, a non-prefix query like '1st' ** will match against "1st" and "first". This method does not require -** extra disk space, as no extra entries are added to the FTS index. +** extra disk space, as no extra entries are added to the FTS index. ** On the other hand, it may require more CPU cycles to run MATCH queries, ** as separate queries of the FTS index are required for each synonym. ** ** When using methods (2) or (3), it is important that the tokenizer only -** provide synonyms when tokenizing document text (method (2)) or query -** text (method (3)), not both. Doing so will not cause any errors, but is +** provide synonyms when tokenizing document text (method (3)) or query +** text (method (2)), not both. Doing so will not cause any errors, but is ** inefficient. */ typedef struct Fts5Tokenizer Fts5Tokenizer; @@ -190682,10 +226295,10 @@ typedef struct fts5_tokenizer fts5_tokenizer; struct fts5_tokenizer { int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); void (*xDelete)(Fts5Tokenizer*); - int (*xTokenize)(Fts5Tokenizer*, + int (*xTokenize)(Fts5Tokenizer*, void *pCtx, int flags, /* Mask of FTS5_TOKENIZE_* flags */ - const char *pText, int nText, + const char *pText, int nText, int (*xToken)( void *pCtx, /* Copy of 2nd argument to xTokenize() */ int tflags, /* Mask of FTS5_TOKEN_* flags */ @@ -190722,7 +226335,7 @@ struct fts5_api { int (*xCreateTokenizer)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_tokenizer *pTokenizer, void (*xDestroy)(void*) ); @@ -190731,7 +226344,7 @@ struct fts5_api { int (*xFindTokenizer)( fts5_api *pApi, const char *zName, - void **ppContext, + void **ppUserData, fts5_tokenizer *pTokenizer ); @@ -190739,7 +226352,7 @@ struct fts5_api { int (*xCreateFunction)( fts5_api *pApi, const char *zName, - void *pContext, + void *pUserData, fts5_extension_function xFunction, void (*xDestroy)(void*) ); @@ -190792,8 +226405,20 @@ typedef sqlite3_uint64 u64; #endif #define testcase(x) -#define ALWAYS(x) 1 -#define NEVER(x) 0 + +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) +# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1 +#endif +#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS) +# define ALWAYS(X) (1) +# define NEVER(X) (0) +#elif !defined(NDEBUG) +# define ALWAYS(X) ((X)?1:(assert(0),0)) +# define NEVER(X) ((X)?(assert(0),1):0) +#else +# define ALWAYS(X) (X) +# define NEVER(X) (X) +#endif #define MIN(x,y) (((x) < (y)) ? (x) : (y)) #define MAX(x,y) (((x) > (y)) ? (x) : (y)) @@ -190806,7 +226431,7 @@ typedef sqlite3_uint64 u64; #endif -/* Truncate very long tokens to this many bytes. Hard limit is +/* Truncate very long tokens to this many bytes. Hard limit is ** (65536-1-1-4-9)==65521 bytes. The limiting factor is the 16-bit offset ** field that occurs at the start of each leaf page (see fts5_index.c). */ #define FTS5_MAX_TOKEN_SIZE 32768 @@ -190818,6 +226443,11 @@ typedef sqlite3_uint64 u64; */ #define FTS5_MAX_PREFIX_INDEXES 31 +/* +** Maximum segments permitted in a single index +*/ +#define FTS5_MAX_SEGMENT 2000 + #define FTS5_DEFAULT_NEARDIST 10 #define FTS5_DEFAULT_RANK "bm25" @@ -190834,7 +226464,7 @@ static int sqlite3Fts5Corrupt(void); /* ** The assert_nc() macro is similar to the assert() macro, except that it -** is used for assert() conditions that are true only if it can be +** is used for assert() conditions that are true only if it can be ** guranteed that the database is not corrupt. */ #ifdef SQLITE_DEBUG @@ -190844,6 +226474,12 @@ SQLITE_API extern int sqlite3_fts5_may_be_corrupt; # define assert_nc(x) assert(x) #endif +/* +** A version of memcmp() that does not cause asan errors if one of the pointer +** parameters is NULL and the number of bytes to compare is zero. +*/ +#define fts5Memcmp(s1, s2, n) ((n)<=0 ? 0 : memcmp((s1), (s2), (n))) + /* Mark a function parameter as unused, to suppress nuisance compiler ** warnings. */ #ifndef UNUSED_PARAM @@ -190857,7 +226493,7 @@ SQLITE_API extern int sqlite3_fts5_may_be_corrupt; typedef struct Fts5Global Fts5Global; typedef struct Fts5Colset Fts5Colset; -/* If a NEAR() clump or phrase may only match a specific set of columns, +/* If a NEAR() clump or phrase may only match a specific set of columns, ** then an object of the following type is used to record the set of columns. ** Each entry in the aiCol[] array is a column that may be matched. ** @@ -190885,20 +226521,24 @@ typedef struct Fts5Config Fts5Config; ** ** nAutomerge: ** The minimum number of segments that an auto-merge operation should -** attempt to merge together. A value of 1 sets the object to use the +** attempt to merge together. A value of 1 sets the object to use the ** compile time default. Zero disables auto-merge altogether. ** +** bContentlessDelete: +** True if the contentless_delete option was present in the CREATE +** VIRTUAL TABLE statement. +** ** zContent: ** ** zContentRowid: -** The value of the content_rowid= option, if one was specified. Or +** The value of the content_rowid= option, if one was specified. Or ** the string "rowid" otherwise. This text is not quoted - if it is ** used as part of an SQL statement it needs to be quoted appropriately. ** ** zContentExprlist: ** ** pzErrmsg: -** This exists in order to allow the fts5_index.c module to return a +** This exists in order to allow the fts5_index.c module to return a ** decent error message if it encounters a file-format version it does ** not understand. ** @@ -190922,15 +226562,19 @@ struct Fts5Config { int nPrefix; /* Number of prefix indexes */ int *aPrefix; /* Sizes in bytes of nPrefix prefix indexes */ int eContent; /* An FTS5_CONTENT value */ - char *zContent; /* content table */ - char *zContentRowid; /* "content_rowid=" option value */ + int bContentlessDelete; /* "contentless_delete=" option (dflt==0) */ + char *zContent; /* content table */ + char *zContentRowid; /* "content_rowid=" option value */ int bColumnsize; /* "columnsize=" option value (dflt==1) */ int eDetail; /* FTS5_DETAIL_XXX value */ char *zContentExprlist; Fts5Tokenizer *pTok; fts5_tokenizer *pTokApi; + int bLock; /* True when table is preparing statement */ + int ePattern; /* FTS_PATTERN_XXX constant */ /* Values loaded from the %_config table */ + int iVersion; /* fts5 file format 'version' */ int iCookie; /* Incremented when %_config is modified */ int pgsz; /* Approximate page size used in %_data */ int nAutomerge; /* 'automerge' setting */ @@ -190939,6 +226583,8 @@ struct Fts5Config { int nHashSize; /* Bytes of memory for in-memory hash */ char *zRank; /* Name of rank function */ char *zRankArgs; /* Arguments to rank function */ + int bSecureDelete; /* 'secure-delete' */ + int nDeleteMerge; /* 'deletemerge' */ /* If non-NULL, points to sqlite3_vtab.base.zErrmsg. Often NULL. */ char **pzErrmsg; @@ -190948,18 +226594,23 @@ struct Fts5Config { #endif }; -/* Current expected value of %_config table 'version' field */ -#define FTS5_CURRENT_VERSION 4 +/* Current expected value of %_config table 'version' field. And +** the expected version if the 'secure-delete' option has ever been +** set on the table. */ +#define FTS5_CURRENT_VERSION 4 +#define FTS5_CURRENT_VERSION_SECUREDELETE 5 #define FTS5_CONTENT_NORMAL 0 #define FTS5_CONTENT_NONE 1 #define FTS5_CONTENT_EXTERNAL 2 -#define FTS5_DETAIL_FULL 0 -#define FTS5_DETAIL_NONE 1 -#define FTS5_DETAIL_COLUMNS 2 - +#define FTS5_DETAIL_FULL 0 +#define FTS5_DETAIL_NONE 1 +#define FTS5_DETAIL_COLUMNS 2 +#define FTS5_PATTERN_NONE 0 +#define FTS5_PATTERN_LIKE 65 /* matches SQLITE_INDEX_CONSTRAINT_LIKE */ +#define FTS5_PATTERN_GLOB 66 /* matches SQLITE_INDEX_CONSTRAINT_GLOB */ static int sqlite3Fts5ConfigParse( Fts5Global*, sqlite3*, int, const char **, Fts5Config**, char** @@ -191016,7 +226667,7 @@ static void sqlite3Fts5BufferAppendPrintf(int *, Fts5Buffer*, char *zFmt, ...); static char *sqlite3Fts5Mprintf(int *pRc, const char *zFmt, ...); #define fts5BufferZero(x) sqlite3Fts5BufferZero(x) -#define fts5BufferAppendVarint(a,b,c) sqlite3Fts5BufferAppendVarint(a,b,c) +#define fts5BufferAppendVarint(a,b,c) sqlite3Fts5BufferAppendVarint(a,b,(i64)c) #define fts5BufferFree(a) sqlite3Fts5BufferFree(a) #define fts5BufferAppendBlob(a,b,c,d) sqlite3Fts5BufferAppendBlob(a,b,c,d) #define fts5BufferSet(a,b,c,d) sqlite3Fts5BufferSet(a,b,c,d) @@ -191031,7 +226682,7 @@ static void sqlite3Fts5Put32(u8*, int); static int sqlite3Fts5Get32(const u8*); #define FTS5_POS2COLUMN(iPos) (int)(iPos >> 32) -#define FTS5_POS2OFFSET(iPos) (int)(iPos & 0xFFFFFFFF) +#define FTS5_POS2OFFSET(iPos) (int)(iPos & 0x7FFFFFFF) typedef struct Fts5PoslistReader Fts5PoslistReader; struct Fts5PoslistReader { @@ -191066,7 +226717,7 @@ static int sqlite3Fts5PoslistNext64( ); /* Malloc utility */ -static void *sqlite3Fts5MallocZero(int *pRc, int nByte); +static void *sqlite3Fts5MallocZero(int *pRc, sqlite3_int64 nByte); static char *sqlite3Fts5Strndup(int *pRc, const char *pIn, int nIn); /* Character set tests (like isspace(), isalpha() etc.) */ @@ -191113,6 +226764,7 @@ struct Fts5IndexIter { ** above. */ #define FTS5INDEX_QUERY_SKIPEMPTY 0x0010 #define FTS5INDEX_QUERY_NOOUTPUT 0x0020 +#define FTS5INDEX_QUERY_SKIPHASH 0x0040 /* ** Create/destroy an Fts5Index object. @@ -191124,27 +226776,27 @@ static int sqlite3Fts5IndexClose(Fts5Index *p); ** Return a simple checksum value based on the arguments. */ static u64 sqlite3Fts5IndexEntryCksum( - i64 iRowid, - int iCol, - int iPos, + i64 iRowid, + int iCol, + int iPos, int iIdx, const char *pTerm, int nTerm ); /* -** Argument p points to a buffer containing utf-8 text that is n bytes in +** Argument p points to a buffer containing utf-8 text that is n bytes in ** size. Return the number of bytes in the nChar character prefix of the ** buffer, or 0 if there are less than nChar characters in total. */ static int sqlite3Fts5IndexCharlenToBytelen( - const char *p, - int nByte, + const char *p, + int nByte, int nChar ); /* -** Open a new iterator to iterate though all rowids that match the +** Open a new iterator to iterate though all rowids that match the ** specified token or token prefix. */ static int sqlite3Fts5IndexQuery( @@ -191167,15 +226819,23 @@ static int sqlite3Fts5IterNextFrom(Fts5IndexIter*, i64 iMatch); */ static void sqlite3Fts5IterClose(Fts5IndexIter*); +/* +** Close the reader blob handle, if it is open. +*/ +static void sqlite3Fts5IndexCloseReader(Fts5Index*); + /* ** This interface is used by the fts5vocab module. */ static const char *sqlite3Fts5IterTerm(Fts5IndexIter*, int*); static int sqlite3Fts5IterNextScan(Fts5IndexIter*); +static void *sqlite3Fts5StructureRef(Fts5Index*); +static void sqlite3Fts5StructureRelease(void*); +static int sqlite3Fts5StructureTest(Fts5Index*, void*); /* -** Insert or remove data to or from the index. Each time a document is +** Insert or remove data to or from the index. Each time a document is ** added to or removed from the index, this function is called one or more ** times. ** @@ -191210,7 +226870,7 @@ static int sqlite3Fts5IndexSync(Fts5Index *p); /* ** Discard any data stored in the in-memory hash tables. Do not write it ** to the database. Additionally, assume that the contents of the %_data -** table may have changed on disk. So any in-memory caches of %_data +** table may have changed on disk. So any in-memory caches of %_data ** records must be invalidated. */ static int sqlite3Fts5IndexRollback(Fts5Index *p); @@ -191224,18 +226884,18 @@ static int sqlite3Fts5IndexSetAverages(Fts5Index *p, const u8*, int); /* ** Functions called by the storage module as part of integrity-check. */ -static int sqlite3Fts5IndexIntegrityCheck(Fts5Index*, u64 cksum); +static int sqlite3Fts5IndexIntegrityCheck(Fts5Index*, u64 cksum, int bUseCksum); -/* -** Called during virtual module initialization to register UDF -** fts5_decode() with SQLite +/* +** Called during virtual module initialization to register UDF +** fts5_decode() with SQLite */ static int sqlite3Fts5IndexInit(sqlite3*); static int sqlite3Fts5IndexSetCookie(Fts5Index*, int); /* -** Return the total number of entries read from the %_data table by +** Return the total number of entries read from the %_data table by ** this connection since it was created. */ static int sqlite3Fts5IndexReads(Fts5Index *p); @@ -191247,19 +226907,22 @@ static int sqlite3Fts5IndexReset(Fts5Index *p); static int sqlite3Fts5IndexLoadConfig(Fts5Index *p); +static int sqlite3Fts5IndexGetOrigin(Fts5Index *p, i64 *piOrigin); +static int sqlite3Fts5IndexContentlessDelete(Fts5Index *p, i64 iOrigin, i64 iRowid); + /* ** End of interface to code in fts5_index.c. **************************************************************************/ /************************************************************************** -** Interface to code in fts5_varint.c. +** Interface to code in fts5_varint.c. */ static int sqlite3Fts5GetVarint32(const unsigned char *p, u32 *v); static int sqlite3Fts5GetVarintLen(u32 iVal); static u8 sqlite3Fts5GetVarint(const unsigned char*, u64*); static int sqlite3Fts5PutVarint(unsigned char *p, u64 v); -#define fts5GetVarint32(a,b) sqlite3Fts5GetVarint32(a,(u32*)&b) +#define fts5GetVarint32(a,b) sqlite3Fts5GetVarint32(a,(u32*)&(b)) #define fts5GetVarint sqlite3Fts5GetVarint #define fts5FastGetVarint32(a, iOff, nVal) { \ @@ -191277,26 +226940,37 @@ static int sqlite3Fts5PutVarint(unsigned char *p, u64 v); /************************************************************************** -** Interface to code in fts5.c. +** Interface to code in fts5_main.c. */ +/* +** Virtual-table object. +*/ +typedef struct Fts5Table Fts5Table; +struct Fts5Table { + sqlite3_vtab base; /* Base class used by SQLite core */ + Fts5Config *pConfig; /* Virtual table configuration */ + Fts5Index *pIndex; /* Full-text index */ +}; + static int sqlite3Fts5GetTokenizer( - Fts5Global*, + Fts5Global*, const char **azArg, int nArg, - Fts5Tokenizer**, - fts5_tokenizer**, + Fts5Config*, char **pzErr ); -static Fts5Index *sqlite3Fts5IndexFromCsrid(Fts5Global*, i64, Fts5Config **); +static Fts5Table *sqlite3Fts5TableFromCsrid(Fts5Global*, i64); + +static int sqlite3Fts5FlushToDisk(Fts5Table*); /* ** End of interface to code in fts5.c. **************************************************************************/ /************************************************************************** -** Interface to code in fts5_hash.c. +** Interface to code in fts5_hash.c. */ typedef struct Fts5Hash Fts5Hash; @@ -191320,10 +226994,16 @@ static int sqlite3Fts5HashWrite( */ static void sqlite3Fts5HashClear(Fts5Hash*); +/* +** Return true if the hash is empty, false otherwise. +*/ +static int sqlite3Fts5HashIsEmpty(Fts5Hash*); + static int sqlite3Fts5HashQuery( Fts5Hash*, /* Hash table to query */ + int nPre, const char *pTerm, int nTerm, /* Query term */ - const u8 **ppDoclist, /* OUT: Pointer to doclist for pTerm */ + void **ppObj, /* OUT: Pointer to doclist for pTerm */ int *pnDoclist /* OUT: Size of doclist in bytes */ ); @@ -191340,12 +227020,13 @@ static void sqlite3Fts5HashScanEntry(Fts5Hash *, ); + /* ** End of interface to code in fts5_hash.c. **************************************************************************/ /************************************************************************** -** Interface to code in fts5_storage.c. fts5_storage.c contains contains +** Interface to code in fts5_storage.c. fts5_storage.c contains contains ** code to access the data stored in the %_content and %_docsize tables. */ @@ -191366,7 +227047,7 @@ static int sqlite3Fts5StorageDelete(Fts5Storage *p, i64, sqlite3_value**); static int sqlite3Fts5StorageContentInsert(Fts5Storage *p, sqlite3_value**, i64*); static int sqlite3Fts5StorageIndexInsert(Fts5Storage *p, sqlite3_value**, i64); -static int sqlite3Fts5StorageIntegrity(Fts5Storage *p); +static int sqlite3Fts5StorageIntegrity(Fts5Storage *p, int iArg); static int sqlite3Fts5StorageStmt(Fts5Storage *p, int eStmt, sqlite3_stmt**, char**); static void sqlite3Fts5StorageStmtRelease(Fts5Storage *p, int eStmt, sqlite3_stmt*); @@ -191394,7 +227075,7 @@ static int sqlite3Fts5StorageReset(Fts5Storage *p); /************************************************************************** -** Interface to code in fts5_expr.c. +** Interface to code in fts5_expr.c. */ typedef struct Fts5Expr Fts5Expr; typedef struct Fts5ExprNode Fts5ExprNode; @@ -191410,12 +227091,20 @@ struct Fts5Token { /* Parse a MATCH expression. */ static int sqlite3Fts5ExprNew( - Fts5Config *pConfig, + Fts5Config *pConfig, + int bPhraseToAnd, int iCol, /* Column on LHS of MATCH operator */ const char *zExpr, - Fts5Expr **ppNew, + Fts5Expr **ppNew, char **pzErr ); +static int sqlite3Fts5ExprPattern( + Fts5Config *pConfig, + int bGlob, + int iCol, + const char *zText, + Fts5Expr **pp +); /* ** for(rc = sqlite3Fts5ExprFirst(pExpr, pIdx, bDesc); @@ -191432,6 +227121,7 @@ static int sqlite3Fts5ExprEof(Fts5Expr*); static i64 sqlite3Fts5ExprRowid(Fts5Expr*); static void sqlite3Fts5ExprFree(Fts5Expr*); +static int sqlite3Fts5ExprAnd(Fts5Expr **pp1, Fts5Expr *p2); /* Called during startup to register a UDF with SQLite */ static int sqlite3Fts5ExprInit(Fts5Global*, sqlite3*); @@ -191473,8 +227163,8 @@ static Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( ); static Fts5ExprPhrase *sqlite3Fts5ParseTerm( - Fts5Parse *pParse, - Fts5ExprPhrase *pPhrase, + Fts5Parse *pParse, + Fts5ExprPhrase *pPhrase, Fts5Token *pToken, int bPrefix ); @@ -191482,14 +227172,14 @@ static Fts5ExprPhrase *sqlite3Fts5ParseTerm( static void sqlite3Fts5ParseSetCaret(Fts5ExprPhrase*); static Fts5ExprNearset *sqlite3Fts5ParseNearset( - Fts5Parse*, + Fts5Parse*, Fts5ExprNearset*, - Fts5ExprPhrase* + Fts5ExprPhrase* ); static Fts5Colset *sqlite3Fts5ParseColset( - Fts5Parse*, - Fts5Colset*, + Fts5Parse*, + Fts5Colset*, Fts5Token * ); @@ -191510,7 +227200,7 @@ static void sqlite3Fts5ParseNear(Fts5Parse *pParse, Fts5Token*); /************************************************************************** -** Interface to code in fts5_aux.c. +** Interface to code in fts5_aux.c. */ static int sqlite3Fts5AuxInit(fts5_api*); @@ -191519,16 +227209,20 @@ static int sqlite3Fts5AuxInit(fts5_api*); **************************************************************************/ /************************************************************************** -** Interface to code in fts5_tokenizer.c. +** Interface to code in fts5_tokenizer.c. */ static int sqlite3Fts5TokenizerInit(fts5_api*); +static int sqlite3Fts5TokenizerPattern( + int (*xCreate)(void*, const char**, int, Fts5Tokenizer**), + Fts5Tokenizer *pTok +); /* ** End of interface to code in fts5_tokenizer.c. **************************************************************************/ /************************************************************************** -** Interface to code in fts5_vocab.c. +** Interface to code in fts5_vocab.c. */ static int sqlite3Fts5VocabInit(Fts5Global*, sqlite3*); @@ -191539,11 +227233,14 @@ static int sqlite3Fts5VocabInit(Fts5Global*, sqlite3*); /************************************************************************** -** Interface to automatically generated code in fts5_unicode2.c. +** Interface to automatically generated code in fts5_unicode2.c. */ -static int sqlite3Fts5UnicodeIsalnum(int c); static int sqlite3Fts5UnicodeIsdiacritic(int c); static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); + +static int sqlite3Fts5UnicodeCatParse(const char*, u8*); +static int sqlite3Fts5UnicodeCategory(u32 iCode); +static void sqlite3Fts5UnicodeAscii(u8*, u8*); /* ** End of interface to code in fts5_unicode2.c. **************************************************************************/ @@ -191566,6 +227263,9 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); #define FTS5_PLUS 14 #define FTS5_STAR 15 +/* This file is automatically generated by Lemon from input grammar +** source file "fts5parse.y". +*/ /* ** 2000-05-29 ** @@ -191590,7 +227290,6 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); ** The following is the concatenation of all %include directives from the ** input grammar file: */ -/* #include */ /************ Begin %include sections from the grammar ************************/ /* #include "fts5Int.h" */ @@ -191620,11 +227319,26 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); #define fts5YYMALLOCARGTYPE u64 /**************** End of %include directives **********************************/ -/* These constants specify the various numeric values for terminal symbols -** in a format understandable to "makeheaders". This section is blank unless -** "lemon" is run with the "-m" command-line option. -***************** Begin makeheaders token definitions *************************/ -/**************** End makeheaders token definitions ***************************/ +/* These constants specify the various numeric values for terminal symbols. +***************** Begin token definitions *************************************/ +#ifndef FTS5_OR +#define FTS5_OR 1 +#define FTS5_AND 2 +#define FTS5_NOT 3 +#define FTS5_TERM 4 +#define FTS5_COLON 5 +#define FTS5_MINUS 6 +#define FTS5_LCP 7 +#define FTS5_RCP 8 +#define FTS5_STRING 9 +#define FTS5_LP 10 +#define FTS5_RP 11 +#define FTS5_CARET 12 +#define FTS5_COMMA 13 +#define FTS5_PLUS 14 +#define FTS5_STAR 15 +#endif +/**************** End token definitions ***************************************/ /* The next sections is a series of control #defines. ** various aspects of the generated parser. @@ -191649,7 +227363,7 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); ** the minor type might be the name of the identifier. ** Each non-terminal can have a different minor type. ** Terminal symbols all have the same minor type, though. -** This macros defines the minor type for terminal +** This macros defines the minor type for terminal ** symbols. ** fts5YYMINORTYPE is the data type used for all minor types. ** This is typically a union of many types, one of @@ -191709,6 +227423,7 @@ typedef union { #define sqlite3Fts5ParserCTX_STORE #define fts5YYNSTATE 35 #define fts5YYNRULE 28 +#define fts5YYNRULE_WITH_ACTION 28 #define fts5YYNFTS5TOKEN 16 #define fts5YY_MAX_SHIFT 34 #define fts5YY_MIN_SHIFTREDUCE 52 @@ -191719,6 +227434,7 @@ typedef union { #define fts5YY_MIN_REDUCE 83 #define fts5YY_MAX_REDUCE 110 /************* End control #defines *******************************************/ +#define fts5YY_NLOOKAHEAD ((int)(sizeof(fts5yy_lookahead)/sizeof(fts5yy_lookahead[0]))) /* Define the fts5yytestcase() macro to be a no-op if is not already defined ** otherwise. @@ -191736,7 +227452,7 @@ typedef union { /* Next are the tables used to determine what action to take based on the ** current state and lookahead token. These tables are used to implement ** functions that take a state number and lookahead value and return an -** action integer. +** action integer. ** ** Suppose the action integer is N. Then the action is determined as ** follows @@ -191836,9 +227552,9 @@ static const fts5YYACTIONTYPE fts5yy_default[] = { }; /********** End of lemon-generated parsing tables *****************************/ -/* The next table maps tokens (terminal symbols) into fallback tokens. +/* The next table maps tokens (terminal symbols) into fallback tokens. ** If a construct like the following: -** +** ** %fallback ID X Y Z. ** ** appears in the grammar, then ID becomes a fallback token for X, Y, @@ -191903,6 +227619,7 @@ struct fts5yyParser { }; typedef struct fts5yyParser fts5yyParser; +/* #include */ #ifndef NDEBUG /* #include */ static FILE *fts5yyTraceFILE = 0; @@ -191910,10 +227627,10 @@ static char *fts5yyTracePrompt = 0; #endif /* NDEBUG */ #ifndef NDEBUG -/* +/* ** Turn parser tracing on by giving a stream to which to write the trace ** and a prompt to preface each trace message. Tracing is turned off -** by making either argument NULL +** by making either argument NULL ** ** Inputs: **
                    @@ -191938,7 +227655,7 @@ static void sqlite3Fts5ParserTrace(FILE *TraceFILE, char *zTracePrompt){ #if defined(fts5YYCOVERAGE) || !defined(NDEBUG) /* For tracing shifts, the names of all terminals and nonterminals ** are required. The following table supplies these names */ -static const char *const fts5yyTokenName[] = { +static const char *const fts5yyTokenName[] = { /* 0 */ "$", /* 1 */ "OR", /* 2 */ "AND", @@ -192034,7 +227751,7 @@ static int fts5yyGrowStack(fts5yyParser *p){ #endif p->fts5yystksz = newSize; } - return pNew==0; + return pNew==0; } #endif @@ -192076,7 +227793,7 @@ static void sqlite3Fts5ParserInit(void *fts5yypRawParser sqlite3Fts5ParserCTX_PD } #ifndef sqlite3Fts5Parser_ENGINEALWAYSONSTACK -/* +/* ** This function allocates a new parser. ** The only argument is a pointer to a function which works like ** malloc. @@ -192103,7 +227820,7 @@ static void *sqlite3Fts5ParserAlloc(void *(*mallocProc)(fts5YYMALLOCARGTYPE) sql /* The following function deletes the "minor type" or semantic value ** associated with a symbol. The symbol can be either a terminal ** or nonterminal. "fts5yymajor" is the symbol code, and "fts5yypminor" is -** a pointer to the value to be deleted. The code used to do the +** a pointer to the value to be deleted. The code used to do the ** deletions is derived from the %destructor and/or %token_destructor ** directives of the input grammar. */ @@ -192118,7 +227835,7 @@ static void fts5yy_destructor( /* Here is inserted the actions which take place when a ** terminal or non-terminal is destroyed. This can happen ** when the symbol is popped from the stack during a - ** reduce or during error processing or when a parser is + ** reduce or during error processing or when a parser is ** being destroyed before it is finished parsing. ** ** Note: during a reduce, the only symbols destroyed are those @@ -192128,31 +227845,31 @@ static void fts5yy_destructor( /********* Begin destructor definitions ***************************************/ case 16: /* input */ { - (void)pParse; + (void)pParse; } break; case 17: /* expr */ case 18: /* cnearset */ case 19: /* exprlist */ { - sqlite3Fts5ParseNodeFree((fts5yypminor->fts5yy24)); + sqlite3Fts5ParseNodeFree((fts5yypminor->fts5yy24)); } break; case 20: /* colset */ case 21: /* colsetlist */ { - sqlite3_free((fts5yypminor->fts5yy11)); + sqlite3_free((fts5yypminor->fts5yy11)); } break; case 22: /* nearset */ case 23: /* nearphrases */ { - sqlite3Fts5ParseNearsetFree((fts5yypminor->fts5yy46)); + sqlite3Fts5ParseNearsetFree((fts5yypminor->fts5yy46)); } break; case 24: /* phrase */ { - sqlite3Fts5ParsePhraseFree((fts5yypminor->fts5yy53)); + sqlite3Fts5ParsePhraseFree((fts5yypminor->fts5yy53)); } break; /********* End destructor definitions *****************************************/ @@ -192193,7 +227910,7 @@ static void sqlite3Fts5ParserFinalize(void *p){ } #ifndef sqlite3Fts5Parser_ENGINEALWAYSONSTACK -/* +/* ** Deallocate and destroy a parser. Destructors are called for ** all stack elements before shutting the parser down. ** @@ -192278,15 +227995,18 @@ static fts5YYACTIONTYPE fts5yy_find_shift_action( do{ i = fts5yy_shift_ofst[stateno]; assert( i>=0 ); - assert( i+fts5YYNFTS5TOKEN<=(int)sizeof(fts5yy_lookahead)/sizeof(fts5yy_lookahead[0]) ); + assert( i<=fts5YY_ACTTAB_COUNT ); + assert( i+fts5YYNFTS5TOKEN<=(int)fts5YY_NLOOKAHEAD ); assert( iLookAhead!=fts5YYNOCODE ); assert( iLookAhead < fts5YYNFTS5TOKEN ); i += iLookAhead; + assert( i<(int)fts5YY_NLOOKAHEAD ); if( fts5yy_lookahead[i]!=iLookAhead ){ #ifdef fts5YYFALLBACK fts5YYCODETYPE iFallback; /* Fallback token */ - if( iLookAhead %s\n", @@ -192301,15 +228021,8 @@ static fts5YYACTIONTYPE fts5yy_find_shift_action( #ifdef fts5YYWILDCARD { int j = i - iLookAhead + fts5YYWILDCARD; - if( -#if fts5YY_SHIFT_MIN+fts5YYWILDCARD<0 - j>=0 && -#endif -#if fts5YY_SHIFT_MAX+fts5YYWILDCARD>=fts5YY_ACTTAB_COUNT - j0 - ){ + assert( j<(int)(sizeof(fts5yy_lookahead)/sizeof(fts5yy_lookahead[0])) ); + if( fts5yy_lookahead[j]==fts5YYWILDCARD && iLookAhead>0 ){ #ifndef NDEBUG if( fts5yyTraceFILE ){ fprintf(fts5yyTraceFILE, "%sWILDCARD %s => %s\n", @@ -192323,6 +228036,7 @@ static fts5YYACTIONTYPE fts5yy_find_shift_action( #endif /* fts5YYWILDCARD */ return fts5yy_default[stateno]; }else{ + assert( i>=0 && i<(int)(sizeof(fts5yy_action)/sizeof(fts5yy_action[0])) ); return fts5yy_action[i]; } }while(1); @@ -192332,7 +228046,7 @@ static fts5YYACTIONTYPE fts5yy_find_shift_action( ** Find the appropriate action for a parser given the non-terminal ** look-ahead token iLookAhead. */ -static int fts5yy_find_reduce_action( +static fts5YYACTIONTYPE fts5yy_find_reduce_action( fts5YYACTIONTYPE stateno, /* Current state number */ fts5YYCODETYPE iLookAhead /* The look-ahead token */ ){ @@ -192418,7 +228132,7 @@ static void fts5yy_shift( assert( fts5yypParser->fts5yyhwm == (int)(fts5yypParser->fts5yytos - fts5yypParser->fts5yystack) ); } #endif -#if fts5YYSTACKDEPTH>0 +#if fts5YYSTACKDEPTH>0 if( fts5yypParser->fts5yytos>fts5yypParser->fts5yystackEnd ){ fts5yypParser->fts5yytos--; fts5yyStackOverflow(fts5yypParser); @@ -192443,41 +228157,70 @@ static void fts5yy_shift( fts5yyTraceShift(fts5yypParser, fts5yyNewState, "Shift"); } -/* The following table contains information about every rule that -** is used during the reduce. -*/ -static const struct { - fts5YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */ - signed char nrhs; /* Negative of the number of RHS symbols in the rule */ -} fts5yyRuleInfo[] = { - { 16, -1 }, /* (0) input ::= expr */ - { 20, -4 }, /* (1) colset ::= MINUS LCP colsetlist RCP */ - { 20, -3 }, /* (2) colset ::= LCP colsetlist RCP */ - { 20, -1 }, /* (3) colset ::= STRING */ - { 20, -2 }, /* (4) colset ::= MINUS STRING */ - { 21, -2 }, /* (5) colsetlist ::= colsetlist STRING */ - { 21, -1 }, /* (6) colsetlist ::= STRING */ - { 17, -3 }, /* (7) expr ::= expr AND expr */ - { 17, -3 }, /* (8) expr ::= expr OR expr */ - { 17, -3 }, /* (9) expr ::= expr NOT expr */ - { 17, -5 }, /* (10) expr ::= colset COLON LP expr RP */ - { 17, -3 }, /* (11) expr ::= LP expr RP */ - { 17, -1 }, /* (12) expr ::= exprlist */ - { 19, -1 }, /* (13) exprlist ::= cnearset */ - { 19, -2 }, /* (14) exprlist ::= exprlist cnearset */ - { 18, -1 }, /* (15) cnearset ::= nearset */ - { 18, -3 }, /* (16) cnearset ::= colset COLON nearset */ - { 22, -1 }, /* (17) nearset ::= phrase */ - { 22, -2 }, /* (18) nearset ::= CARET phrase */ - { 22, -5 }, /* (19) nearset ::= STRING LP nearphrases neardist_opt RP */ - { 23, -1 }, /* (20) nearphrases ::= phrase */ - { 23, -2 }, /* (21) nearphrases ::= nearphrases phrase */ - { 25, 0 }, /* (22) neardist_opt ::= */ - { 25, -2 }, /* (23) neardist_opt ::= COMMA STRING */ - { 24, -4 }, /* (24) phrase ::= phrase PLUS STRING star_opt */ - { 24, -2 }, /* (25) phrase ::= STRING star_opt */ - { 26, -1 }, /* (26) star_opt ::= STAR */ - { 26, 0 }, /* (27) star_opt ::= */ +/* For rule J, fts5yyRuleInfoLhs[J] contains the symbol on the left-hand side +** of that rule */ +static const fts5YYCODETYPE fts5yyRuleInfoLhs[] = { + 16, /* (0) input ::= expr */ + 20, /* (1) colset ::= MINUS LCP colsetlist RCP */ + 20, /* (2) colset ::= LCP colsetlist RCP */ + 20, /* (3) colset ::= STRING */ + 20, /* (4) colset ::= MINUS STRING */ + 21, /* (5) colsetlist ::= colsetlist STRING */ + 21, /* (6) colsetlist ::= STRING */ + 17, /* (7) expr ::= expr AND expr */ + 17, /* (8) expr ::= expr OR expr */ + 17, /* (9) expr ::= expr NOT expr */ + 17, /* (10) expr ::= colset COLON LP expr RP */ + 17, /* (11) expr ::= LP expr RP */ + 17, /* (12) expr ::= exprlist */ + 19, /* (13) exprlist ::= cnearset */ + 19, /* (14) exprlist ::= exprlist cnearset */ + 18, /* (15) cnearset ::= nearset */ + 18, /* (16) cnearset ::= colset COLON nearset */ + 22, /* (17) nearset ::= phrase */ + 22, /* (18) nearset ::= CARET phrase */ + 22, /* (19) nearset ::= STRING LP nearphrases neardist_opt RP */ + 23, /* (20) nearphrases ::= phrase */ + 23, /* (21) nearphrases ::= nearphrases phrase */ + 25, /* (22) neardist_opt ::= */ + 25, /* (23) neardist_opt ::= COMMA STRING */ + 24, /* (24) phrase ::= phrase PLUS STRING star_opt */ + 24, /* (25) phrase ::= STRING star_opt */ + 26, /* (26) star_opt ::= STAR */ + 26, /* (27) star_opt ::= */ +}; + +/* For rule J, fts5yyRuleInfoNRhs[J] contains the negative of the number +** of symbols on the right-hand side of that rule. */ +static const signed char fts5yyRuleInfoNRhs[] = { + -1, /* (0) input ::= expr */ + -4, /* (1) colset ::= MINUS LCP colsetlist RCP */ + -3, /* (2) colset ::= LCP colsetlist RCP */ + -1, /* (3) colset ::= STRING */ + -2, /* (4) colset ::= MINUS STRING */ + -2, /* (5) colsetlist ::= colsetlist STRING */ + -1, /* (6) colsetlist ::= STRING */ + -3, /* (7) expr ::= expr AND expr */ + -3, /* (8) expr ::= expr OR expr */ + -3, /* (9) expr ::= expr NOT expr */ + -5, /* (10) expr ::= colset COLON LP expr RP */ + -3, /* (11) expr ::= LP expr RP */ + -1, /* (12) expr ::= exprlist */ + -1, /* (13) exprlist ::= cnearset */ + -2, /* (14) exprlist ::= exprlist cnearset */ + -1, /* (15) cnearset ::= nearset */ + -3, /* (16) cnearset ::= colset COLON nearset */ + -1, /* (17) nearset ::= phrase */ + -2, /* (18) nearset ::= CARET phrase */ + -5, /* (19) nearset ::= STRING LP nearphrases neardist_opt RP */ + -1, /* (20) nearphrases ::= phrase */ + -2, /* (21) nearphrases ::= nearphrases phrase */ + 0, /* (22) neardist_opt ::= */ + -2, /* (23) neardist_opt ::= COMMA STRING */ + -4, /* (24) phrase ::= phrase PLUS STRING star_opt */ + -2, /* (25) phrase ::= STRING star_opt */ + -1, /* (26) star_opt ::= STAR */ + 0, /* (27) star_opt ::= */ }; static void fts5yy_accept(fts5yyParser*); /* Forward Declaration */ @@ -192500,58 +228243,13 @@ static fts5YYACTIONTYPE fts5yy_reduce( sqlite3Fts5ParserCTX_PDECL /* %extra_context */ ){ int fts5yygoto; /* The next state */ - int fts5yyact; /* The next action */ + fts5YYACTIONTYPE fts5yyact; /* The next action */ fts5yyStackEntry *fts5yymsp; /* The top of the parser's stack */ int fts5yysize; /* Amount to pop the stack */ sqlite3Fts5ParserARG_FETCH (void)fts5yyLookahead; (void)fts5yyLookaheadToken; fts5yymsp = fts5yypParser->fts5yytos; -#ifndef NDEBUG - if( fts5yyTraceFILE && fts5yyruleno<(int)(sizeof(fts5yyRuleName)/sizeof(fts5yyRuleName[0])) ){ - fts5yysize = fts5yyRuleInfo[fts5yyruleno].nrhs; - if( fts5yysize ){ - fprintf(fts5yyTraceFILE, "%sReduce %d [%s], go to state %d.\n", - fts5yyTracePrompt, - fts5yyruleno, fts5yyRuleName[fts5yyruleno], fts5yymsp[fts5yysize].stateno); - }else{ - fprintf(fts5yyTraceFILE, "%sReduce %d [%s].\n", - fts5yyTracePrompt, fts5yyruleno, fts5yyRuleName[fts5yyruleno]); - } - } -#endif /* NDEBUG */ - - /* Check that the stack is large enough to grow by a single entry - ** if the RHS of the rule is empty. This ensures that there is room - ** enough on the stack to push the LHS value */ - if( fts5yyRuleInfo[fts5yyruleno].nrhs==0 ){ -#ifdef fts5YYTRACKMAXSTACKDEPTH - if( (int)(fts5yypParser->fts5yytos - fts5yypParser->fts5yystack)>fts5yypParser->fts5yyhwm ){ - fts5yypParser->fts5yyhwm++; - assert( fts5yypParser->fts5yyhwm == (int)(fts5yypParser->fts5yytos - fts5yypParser->fts5yystack)); - } -#endif -#if fts5YYSTACKDEPTH>0 - if( fts5yypParser->fts5yytos>=fts5yypParser->fts5yystackEnd ){ - fts5yyStackOverflow(fts5yypParser); - /* The call to fts5yyStackOverflow() above pops the stack until it is - ** empty, causing the main parser loop to exit. So the return value - ** is never used and does not matter. */ - return 0; - } -#else - if( fts5yypParser->fts5yytos>=&fts5yypParser->fts5yystack[fts5yypParser->fts5yystksz-1] ){ - if( fts5yyGrowStack(fts5yypParser) ){ - fts5yyStackOverflow(fts5yypParser); - /* The call to fts5yyStackOverflow() above pops the stack until it is - ** empty, causing the main parser loop to exit. So the return value - ** is never used and does not matter. */ - return 0; - } - fts5yymsp = fts5yypParser->fts5yytos; - } -#endif - } switch( fts5yyruleno ){ /* Beginning here are the reduction cases. A typical example @@ -192568,7 +228266,7 @@ static fts5YYACTIONTYPE fts5yy_reduce( { sqlite3Fts5ParseFinished(pParse, fts5yymsp[0].minor.fts5yy24); } break; case 1: /* colset ::= MINUS LCP colsetlist RCP */ -{ +{ fts5yymsp[-3].minor.fts5yy11 = sqlite3Fts5ParseColsetInvert(pParse, fts5yymsp[-1].minor.fts5yy11); } break; @@ -192588,13 +228286,13 @@ static fts5YYACTIONTYPE fts5yy_reduce( } break; case 5: /* colsetlist ::= colsetlist STRING */ -{ +{ fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, fts5yymsp[-1].minor.fts5yy11, &fts5yymsp[0].minor.fts5yy0); } fts5yymsp[-1].minor.fts5yy11 = fts5yylhsminor.fts5yy11; break; case 6: /* colsetlist ::= STRING */ -{ - fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0); +{ + fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0); } fts5yymsp[0].minor.fts5yy11 = fts5yylhsminor.fts5yy11; break; @@ -192638,14 +228336,14 @@ static fts5YYACTIONTYPE fts5yy_reduce( fts5yymsp[-1].minor.fts5yy24 = fts5yylhsminor.fts5yy24; break; case 15: /* cnearset ::= nearset */ -{ - fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); +{ + fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); } fts5yymsp[0].minor.fts5yy24 = fts5yylhsminor.fts5yy24; break; case 16: /* cnearset ::= colset COLON nearset */ -{ - fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); +{ + fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); sqlite3Fts5ParseSetColset(pParse, fts5yylhsminor.fts5yy24, fts5yymsp[-2].minor.fts5yy11); } fts5yymsp[-2].minor.fts5yy24 = fts5yylhsminor.fts5yy24; @@ -192655,9 +228353,9 @@ static fts5YYACTIONTYPE fts5yy_reduce( fts5yymsp[0].minor.fts5yy46 = fts5yylhsminor.fts5yy46; break; case 18: /* nearset ::= CARET phrase */ -{ +{ sqlite3Fts5ParseSetCaret(fts5yymsp[0].minor.fts5yy53); - fts5yymsp[-1].minor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); + fts5yymsp[-1].minor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); } break; case 19: /* nearset ::= STRING LP nearphrases neardist_opt RP */ @@ -192669,8 +228367,8 @@ static fts5YYACTIONTYPE fts5yy_reduce( fts5yymsp[-4].minor.fts5yy46 = fts5yylhsminor.fts5yy46; break; case 20: /* nearphrases ::= phrase */ -{ - fts5yylhsminor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); +{ + fts5yylhsminor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); } fts5yymsp[0].minor.fts5yy46 = fts5yylhsminor.fts5yy46; break; @@ -192687,13 +228385,13 @@ static fts5YYACTIONTYPE fts5yy_reduce( { fts5yymsp[-1].minor.fts5yy0 = fts5yymsp[0].minor.fts5yy0; } break; case 24: /* phrase ::= phrase PLUS STRING star_opt */ -{ +{ fts5yylhsminor.fts5yy53 = sqlite3Fts5ParseTerm(pParse, fts5yymsp[-3].minor.fts5yy53, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy4); } fts5yymsp[-3].minor.fts5yy53 = fts5yylhsminor.fts5yy53; break; case 25: /* phrase ::= STRING star_opt */ -{ +{ fts5yylhsminor.fts5yy53 = sqlite3Fts5ParseTerm(pParse, 0, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy4); } fts5yymsp[-1].minor.fts5yy53 = fts5yylhsminor.fts5yy53; @@ -192708,9 +228406,9 @@ static fts5YYACTIONTYPE fts5yy_reduce( break; /********** End reduce actions ************************************************/ }; - assert( fts5yyrulenofts5yytos>=fts5yypParser->fts5yystack ); assert( fts5yyact==fts5yypParser->fts5yytos->stateno ); - fts5yyact = fts5yy_find_shift_action(fts5yymajor,fts5yyact); + fts5yyact = fts5yy_find_shift_action((fts5YYCODETYPE)fts5yymajor,fts5yyact); if( fts5yyact >= fts5YY_MIN_REDUCE ){ - fts5yyact = fts5yy_reduce(fts5yypParser,fts5yyact-fts5YY_MIN_REDUCE,fts5yymajor, - fts5yyminor sqlite3Fts5ParserCTX_PARAM); + unsigned int fts5yyruleno = fts5yyact - fts5YY_MIN_REDUCE; /* Reduce by this rule */ +#ifndef NDEBUG + assert( fts5yyruleno<(int)(sizeof(fts5yyRuleName)/sizeof(fts5yyRuleName[0])) ); + if( fts5yyTraceFILE ){ + int fts5yysize = fts5yyRuleInfoNRhs[fts5yyruleno]; + if( fts5yysize ){ + fprintf(fts5yyTraceFILE, "%sReduce %d [%s]%s, pop back to state %d.\n", + fts5yyTracePrompt, + fts5yyruleno, fts5yyRuleName[fts5yyruleno], + fts5yyrulenofts5yytos[fts5yysize].stateno); + }else{ + fprintf(fts5yyTraceFILE, "%sReduce %d [%s]%s.\n", + fts5yyTracePrompt, fts5yyruleno, fts5yyRuleName[fts5yyruleno], + fts5yyrulenofts5yytos - fts5yypParser->fts5yystack)>fts5yypParser->fts5yyhwm ){ + fts5yypParser->fts5yyhwm++; + assert( fts5yypParser->fts5yyhwm == + (int)(fts5yypParser->fts5yytos - fts5yypParser->fts5yystack)); + } +#endif +#if fts5YYSTACKDEPTH>0 + if( fts5yypParser->fts5yytos>=fts5yypParser->fts5yystackEnd ){ + fts5yyStackOverflow(fts5yypParser); + break; + } +#else + if( fts5yypParser->fts5yytos>=&fts5yypParser->fts5yystack[fts5yypParser->fts5yystksz-1] ){ + if( fts5yyGrowStack(fts5yypParser) ){ + fts5yyStackOverflow(fts5yypParser); + break; + } + } +#endif + } + fts5yyact = fts5yy_reduce(fts5yypParser,fts5yyruleno,fts5yymajor,fts5yyminor sqlite3Fts5ParserCTX_PARAM); }else if( fts5yyact <= fts5YY_MAX_SHIFTREDUCE ){ - fts5yy_shift(fts5yypParser,fts5yyact,fts5yymajor,fts5yyminor); + fts5yy_shift(fts5yypParser,fts5yyact,(fts5YYCODETYPE)fts5yymajor,fts5yyminor); #ifndef fts5YYNOERRORRECOVERY fts5yypParser->fts5yyerrcnt--; #endif @@ -192884,7 +228626,7 @@ static void sqlite3Fts5Parser( #ifdef fts5YYERRORSYMBOL /* A syntax error has occurred. ** The response to an error depends upon whether or not the - ** grammar defines an error token "ERROR". + ** grammar defines an error token "ERROR". ** ** This is what we do if the grammar does define ERROR: ** @@ -192915,15 +228657,13 @@ static void sqlite3Fts5Parser( fts5yy_destructor(fts5yypParser, (fts5YYCODETYPE)fts5yymajor, &fts5yyminorunion); fts5yymajor = fts5YYNOCODE; }else{ - while( fts5yypParser->fts5yytos >= fts5yypParser->fts5yystack - && fts5yymx != fts5YYERRORSYMBOL - && (fts5yyact = fts5yy_find_reduce_action( - fts5yypParser->fts5yytos->stateno, - fts5YYERRORSYMBOL)) >= fts5YY_MIN_REDUCE - ){ + while( fts5yypParser->fts5yytos > fts5yypParser->fts5yystack ){ + fts5yyact = fts5yy_find_reduce_action(fts5yypParser->fts5yytos->stateno, + fts5YYERRORSYMBOL); + if( fts5yyact<=fts5YY_MAX_SHIFTREDUCE ) break; fts5yy_pop_parser_stack(fts5yypParser); } - if( fts5yypParser->fts5yytos < fts5yypParser->fts5yystack || fts5yymajor==0 ){ + if( fts5yypParser->fts5yytos <= fts5yypParser->fts5yystack || fts5yymajor==0 ){ fts5yy_destructor(fts5yypParser,(fts5YYCODETYPE)fts5yymajor,&fts5yyminorunion); fts5yy_parse_failed(fts5yypParser); #ifndef fts5YYNOERRORRECOVERY @@ -192973,7 +228713,7 @@ static void sqlite3Fts5Parser( break; #endif } - }while( fts5yypParser->fts5yytos>fts5yypParser->fts5yystack ); + } #ifndef NDEBUG if( fts5yyTraceFILE ){ fts5yyStackEntry *i; @@ -192989,6 +228729,20 @@ static void sqlite3Fts5Parser( return; } +/* +** Return the fallback token corresponding to canonical token iToken, or +** 0 if iToken has no fallback. +*/ +static int sqlite3Fts5ParserFallback(int iToken){ +#ifdef fts5YYFALLBACK + assert( iToken<(int)(sizeof(fts5yyFallback)/sizeof(fts5yyFallback[0])) ); + return fts5yyFallback[iToken]; +#else + (void)iToken; + return 0; +#endif +} + /* ** 2014 May 31 ** @@ -193007,7 +228761,7 @@ static void sqlite3Fts5Parser( #include /* amalgamator: keep */ /* -** Object used to iterate through all "coalesced phrase instances" in +** Object used to iterate through all "coalesced phrase instances" in ** a single column of the current row. If the phrase instances in the ** column being considered do not overlap, this object simply iterates ** through them. Or, if they do overlap (share one or more tokens in @@ -193070,7 +228824,7 @@ static int fts5CInstIterNext(CInstIter *pIter){ } /* -** Initialize the iterator object indicated by the final parameter to +** Initialize the iterator object indicated by the final parameter to ** iterate through coalesced phrase instances in column iCol. */ static int fts5CInstIterInit( @@ -193115,19 +228869,19 @@ struct HighlightContext { /* ** Append text to the HighlightContext output string - p->zOut. Argument -** z points to a buffer containing n bytes of text to append. If n is +** z points to a buffer containing n bytes of text to append. If n is ** negative, everything up until the first '\0' is appended to the output. ** -** If *pRc is set to any value other than SQLITE_OK when this function is -** called, it is a no-op. If an error (i.e. an OOM condition) is encountered, -** *pRc is set to an error code before returning. +** If *pRc is set to any value other than SQLITE_OK when this function is +** called, it is a no-op. If an error (i.e. an OOM condition) is encountered, +** *pRc is set to an error code before returning. */ static void fts5HighlightAppend( - int *pRc, - HighlightContext *p, + int *pRc, + HighlightContext *p, const char *z, int n ){ - if( *pRc==SQLITE_OK ){ + if( *pRc==SQLITE_OK && z ){ if( n<0 ) n = (int)strlen(z); p->zOut = sqlite3_mprintf("%z%.*s", p->zOut, n, z); if( p->zOut==0 ) *pRc = SQLITE_NOMEM; @@ -193154,7 +228908,7 @@ static int fts5HighlightCb( if( tflags & FTS5_TOKEN_COLOCATED ) return SQLITE_OK; iPos = p->iPos++; - if( p->iRangeEnd>0 ){ + if( p->iRangeEnd>=0 ){ if( iPosiRangeStart || iPos>p->iRangeEnd ) return SQLITE_OK; if( p->iRangeStart && iPos==p->iRangeStart ) p->iOff = iStartOff; } @@ -193166,7 +228920,7 @@ static int fts5HighlightCb( } if( iPos==p->iter.iEnd ){ - if( p->iRangeEnd && p->iter.iStartiRangeStart ){ + if( p->iRangeEnd>=0 && p->iter.iStartiRangeStart ){ fts5HighlightAppend(&rc, p, p->zOpen, -1); } fts5HighlightAppend(&rc, p, &p->zIn[p->iOff], iEndOff - p->iOff); @@ -193177,7 +228931,7 @@ static int fts5HighlightCb( } } - if( p->iRangeEnd>0 && iPos==p->iRangeEnd ){ + if( p->iRangeEnd>=0 && iPos==p->iRangeEnd ){ fts5HighlightAppend(&rc, p, &p->zIn[p->iOff], iEndOff - p->iOff); p->iOff = iEndOff; if( iPos>=p->iter.iStart && iPositer.iEnd ){ @@ -193212,6 +228966,7 @@ static void fts5HighlightFunction( memset(&ctx, 0, sizeof(HighlightContext)); ctx.zOpen = (const char*)sqlite3_value_text(apVal[1]); ctx.zClose = (const char*)sqlite3_value_text(apVal[2]); + ctx.iRangeEnd = -1; rc = pApi->xColumnText(pFts, iCol, &ctx.zIn, &ctx.nIn); if( ctx.zIn ){ @@ -193259,7 +229014,7 @@ static int fts5SentenceFinderAdd(Fts5SFinder *p, int iAdd){ int nNew = p->nFirstAlloc ? p->nFirstAlloc*2 : 64; int *aNew; - aNew = (int*)sqlite3_realloc(p->aFirst, nNew*sizeof(int)); + aNew = (int*)sqlite3_realloc64(p->aFirst, nNew*sizeof(int)); if( aNew==0 ) return SQLITE_NOMEM; p->aFirst = aNew; p->nFirstAlloc = nNew; @@ -193326,11 +229081,12 @@ static int fts5SnippetScore( int nInst; int nScore = 0; int iLast = 0; + sqlite3_int64 iEnd = (sqlite3_int64)iPos + nToken; rc = pApi->xInstCount(pFts, &nInst); for(i=0; ixInst(pFts, i, &ip, &ic, &iOff); - if( rc==SQLITE_OK && ic==iCol && iOff>=iPos && iOff<(iPos+nToken) ){ + if( rc==SQLITE_OK && ic==iCol && iOff>=iPos && iOffnDocsize ) iAdj = nDocsize - nToken; if( iAdj<0 ) iAdj = 0; - *piPos = iAdj; + *piPos = (int)iAdj; } return rc; } /* -** Return the value in pVal interpreted as utf-8 text. Except, if pVal +** Return the value in pVal interpreted as utf-8 text. Except, if pVal ** contains a NULL value, return a pointer to a static string zero ** bytes in length instead of a NULL pointer. */ @@ -193396,6 +229152,7 @@ static void fts5SnippetFunction( iCol = sqlite3_value_int(apVal[0]); ctx.zOpen = fts5ValueToText(apVal[1]); ctx.zClose = fts5ValueToText(apVal[2]); + ctx.iRangeEnd = -1; zEllips = fts5ValueToText(apVal[3]); nToken = sqlite3_value_int(apVal[4]); @@ -193419,7 +229176,7 @@ static void fts5SnippetFunction( sFinder.nFirst = 0; rc = pApi->xColumnText(pFts, i, &sFinder.zDoc, &nDoc); if( rc!=SQLITE_OK ) break; - rc = pApi->xTokenize(pFts, + rc = pApi->xTokenize(pFts, sFinder.zDoc, nDoc, (void*)&sFinder,fts5SentenceFinderCb ); if( rc!=SQLITE_OK ) break; @@ -193433,7 +229190,9 @@ static void fts5SnippetFunction( int jj; rc = pApi->xInst(pFts, ii, &ip, &ic, &io); - if( ic!=i || rc!=SQLITE_OK ) continue; + if( ic!=i ) continue; + if( io>nDocsize ) rc = FTS5_CORRUPT; + if( rc!=SQLITE_OK ) continue; memset(aSeen, 0, nPhrase); rc = fts5SnippetScore(pApi, pFts, nDocsize, aSeen, i, io, nToken, &nScore, &iAdj @@ -193452,7 +229211,7 @@ static void fts5SnippetFunction( if( sFinder.aFirst[jj]xGetAuxdata(pFts, 0); + p = (Fts5Bm25Data*)pApi->xGetAuxdata(pFts, 0); if( p==0 ){ int nPhrase; /* Number of phrases in query */ sqlite3_int64 nRow = 0; /* Number of rows in table */ sqlite3_int64 nToken = 0; /* Number of tokens in table */ - int nByte; /* Bytes of space to allocate */ + sqlite3_int64 nByte; /* Bytes of space to allocate */ int i; /* Allocate the Fts5Bm25Data object */ nPhrase = pApi->xPhraseCount(pFts); nByte = sizeof(Fts5Bm25Data) + nPhrase*2*sizeof(double); - p = (Fts5Bm25Data*)sqlite3_malloc(nByte); + p = (Fts5Bm25Data*)sqlite3_malloc64(nByte); if( p==0 ){ rc = SQLITE_NOMEM; }else{ - memset(p, 0, nByte); + memset(p, 0, (size_t)nByte); p->nPhrase = nPhrase; p->aIDF = (double*)&p[1]; p->aFreq = &p->aIDF[nPhrase]; @@ -193577,6 +229336,7 @@ static int fts5Bm25GetData( /* Calculate the average document length for this FTS5 table */ if( rc==SQLITE_OK ) rc = pApi->xRowCount(pFts, &nRow); + assert( rc!=SQLITE_OK || nRow>0 ); if( rc==SQLITE_OK ) rc = pApi->xColumnTotalSize(pFts, -1, &nToken); if( rc==SQLITE_OK ) p->avgdl = (double)nToken / (double)nRow; @@ -193594,7 +229354,7 @@ static int fts5Bm25GetData( ** is the number that contain at least one instance of the phrase ** under consideration. ** - ** The problem with this is that if (N < 2*nHit), the IDF is + ** The problem with this is that if (N < 2*nHit), the IDF is ** negative. Which is undesirable. So the mimimum allowable IDF is ** (1e-6) - roughly the same as a term that appears in just over ** half of set of 5,000,000 documents. */ @@ -193627,7 +229387,7 @@ static void fts5Bm25Function( ){ const double k1 = 1.2; /* Constant "k1" from BM25 formula */ const double b = 0.75; /* Constant "b" from BM25 formula */ - int rc = SQLITE_OK; /* Error code */ + int rc; /* Error code */ double score = 0.0; /* SQL function return value */ Fts5Bm25Data *pData; /* Values allocated/calculated once only */ int i; /* Iterator variable */ @@ -193659,17 +229419,15 @@ static void fts5Bm25Function( D = (double)nTok; } - /* Determine the BM25 score for the current row. */ - for(i=0; rc==SQLITE_OK && inPhrase; i++){ - score += pData->aIDF[i] * ( - ( aFreq[i] * (k1 + 1.0) ) / - ( aFreq[i] + k1 * (1 - b + b * D / pData->avgdl) ) - ); - } - - /* If no error has occurred, return the calculated score. Otherwise, - ** throw an SQL exception. */ + /* Determine and return the BM25 score for the current row. Or, if an + ** error has occurred, throw an exception. */ if( rc==SQLITE_OK ){ + for(i=0; inPhrase; i++){ + score += pData->aIDF[i] * ( + ( aFreq[i] * (k1 + 1.0) ) / + ( aFreq[i] + k1 * (1 - b + b * D / pData->avgdl) ) + ); + } sqlite3_result_double(pCtx, -1.0 * score); }else{ sqlite3_result_error_code(pCtx, rc); @@ -193702,8 +229460,6 @@ static int sqlite3Fts5AuxInit(fts5_api *pApi){ return rc; } - - /* ** 2014 May 31 ** @@ -193723,17 +229479,17 @@ static int sqlite3Fts5AuxInit(fts5_api *pApi){ static int sqlite3Fts5BufferSize(int *pRc, Fts5Buffer *pBuf, u32 nByte){ if( (u32)pBuf->nSpacenSpace ? pBuf->nSpace : 64; + u64 nNew = pBuf->nSpace ? pBuf->nSpace : 64; u8 *pNew; while( nNewp, nNew); + pNew = sqlite3_realloc64(pBuf->p, nNew); if( pNew==0 ){ *pRc = SQLITE_NOMEM; return 1; }else{ - pBuf->nSpace = nNew; + pBuf->nSpace = (int)nNew; pBuf->p = pNew; } } @@ -193758,21 +229514,20 @@ static void sqlite3Fts5Put32(u8 *aBuf, int iVal){ } static int sqlite3Fts5Get32(const u8 *aBuf){ - return (aBuf[0] << 24) + (aBuf[1] << 16) + (aBuf[2] << 8) + aBuf[3]; + return (int)((((u32)aBuf[0])<<24) + (aBuf[1]<<16) + (aBuf[2]<<8) + aBuf[3]); } /* -** Append buffer nData/pData to buffer pBuf. If an OOM error occurs, set +** Append buffer nData/pData to buffer pBuf. If an OOM error occurs, set ** the error code in p. If an error has already occurred when this function ** is called, it is a no-op. */ static void sqlite3Fts5BufferAppendBlob( int *pRc, - Fts5Buffer *pBuf, - u32 nData, + Fts5Buffer *pBuf, + u32 nData, const u8 *pData ){ - assert_nc( *pRc || nData>=0 ); if( nData ){ if( fts5BufferGrow(pRc, pBuf, nData) ) return; memcpy(&pBuf->p[pBuf->n], pData, nData); @@ -193782,12 +229537,12 @@ static void sqlite3Fts5BufferAppendBlob( /* ** Append the nul-terminated string zStr to the buffer pBuf. This function -** ensures that the byte following the buffer data is set to 0x00, even +** ensures that the byte following the buffer data is set to 0x00, even ** though this byte is not included in the pBuf->n count. */ static void sqlite3Fts5BufferAppendString( int *pRc, - Fts5Buffer *pBuf, + Fts5Buffer *pBuf, const char *zStr ){ int nStr = (int)strlen(zStr); @@ -193799,13 +229554,13 @@ static void sqlite3Fts5BufferAppendString( ** Argument zFmt is a printf() style format string. This function performs ** the printf() style processing, then appends the results to buffer pBuf. ** -** Like sqlite3Fts5BufferAppendString(), this function ensures that the byte +** Like sqlite3Fts5BufferAppendString(), this function ensures that the byte ** following the buffer data is set to 0x00, even though this byte is not ** included in the pBuf->n count. -*/ +*/ static void sqlite3Fts5BufferAppendPrintf( int *pRc, - Fts5Buffer *pBuf, + Fts5Buffer *pBuf, char *zFmt, ... ){ if( *pRc==SQLITE_OK ){ @@ -193832,12 +229587,12 @@ static char *sqlite3Fts5Mprintf(int *pRc, const char *zFmt, ...){ zRet = sqlite3_vmprintf(zFmt, ap); va_end(ap); if( zRet==0 ){ - *pRc = SQLITE_NOMEM; + *pRc = SQLITE_NOMEM; } } return zRet; } - + /* ** Free any buffer allocated by pBuf. Zero the structure before returning. @@ -193848,7 +229603,7 @@ static void sqlite3Fts5BufferFree(Fts5Buffer *pBuf){ } /* -** Zero the contents of the buffer object. But do not free the associated +** Zero the contents of the buffer object. But do not free the associated ** memory allocation. */ static void sqlite3Fts5BufferZero(Fts5Buffer *pBuf){ @@ -193862,8 +229617,8 @@ static void sqlite3Fts5BufferZero(Fts5Buffer *pBuf){ */ static void sqlite3Fts5BufferSet( int *pRc, - Fts5Buffer *pBuf, - int nData, + Fts5Buffer *pBuf, + int nData, const u8 *pData ){ pBuf->n = 0; @@ -193879,18 +229634,31 @@ static int sqlite3Fts5PoslistNext64( if( i>=n ){ /* EOF */ *piOff = -1; - return 1; + return 1; }else{ i64 iOff = *piOff; - int iVal; + u32 iVal; fts5FastGetVarint32(a, i, iVal); - if( iVal==1 ){ + if( iVal<=1 ){ + if( iVal==0 ){ + *pi = i; + return 0; + } fts5FastGetVarint32(a, i, iVal); iOff = ((i64)iVal) << 32; + assert( iOff>=0 ); fts5FastGetVarint32(a, i, iVal); + if( iVal<2 ){ + /* This is a corrupt record. So stop parsing it here. */ + *piOff = -1; + return 1; + } + *piOff = iOff + ((iVal-2) & 0x7FFFFFFF); + }else{ + *piOff = (iOff & (i64)0x7FFFFFFF<<32)+((iOff + (iVal-2)) & 0x7FFFFFFF); } - *piOff = iOff + (iVal-2); *pi = i; + assert_nc( *piOff>=iOff ); return 0; } } @@ -193925,22 +229693,24 @@ static int sqlite3Fts5PoslistReaderInit( ** to iPos before returning. */ static void sqlite3Fts5PoslistSafeAppend( - Fts5Buffer *pBuf, - i64 *piPrev, + Fts5Buffer *pBuf, + i64 *piPrev, i64 iPos ){ - static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32; - if( (iPos & colmask) != (*piPrev & colmask) ){ - pBuf->p[pBuf->n++] = 1; - pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32)); - *piPrev = (iPos & colmask); + if( iPos>=*piPrev ){ + static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32; + if( (iPos & colmask) != (*piPrev & colmask) ){ + pBuf->p[pBuf->n++] = 1; + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32)); + *piPrev = (iPos & colmask); + } + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-*piPrev)+2); + *piPrev = iPos; } - pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-*piPrev)+2); - *piPrev = iPos; } static int sqlite3Fts5PoslistWriterAppend( - Fts5Buffer *pBuf, + Fts5Buffer *pBuf, Fts5PoslistWriter *pWriter, i64 iPos ){ @@ -193950,14 +229720,14 @@ static int sqlite3Fts5PoslistWriterAppend( return SQLITE_OK; } -static void *sqlite3Fts5MallocZero(int *pRc, int nByte){ +static void *sqlite3Fts5MallocZero(int *pRc, sqlite3_int64 nByte){ void *pRet = 0; if( *pRc==SQLITE_OK ){ - pRet = sqlite3_malloc(nByte); + pRet = sqlite3_malloc64(nByte); if( pRet==0 ){ if( nByte>0 ) *pRc = SQLITE_NOMEM; }else{ - memset(pRet, 0, nByte); + memset(pRet, 0, (size_t)nByte); } } return pRet; @@ -193969,7 +229739,7 @@ static void *sqlite3Fts5MallocZero(int *pRc, int nByte){ ** the length of the string is determined using strlen(). ** ** It is the responsibility of the caller to eventually free the returned -** buffer using sqlite3_free(). If an OOM error occurs, NULL is returned. +** buffer using sqlite3_free(). If an OOM error occurs, NULL is returned. */ static char *sqlite3Fts5Strndup(int *pRc, const char *pIn, int nIn){ char *zRet = 0; @@ -194036,9 +229806,9 @@ static int sqlite3Fts5TermsetNew(Fts5Termset **pp){ } static int sqlite3Fts5TermsetAdd( - Fts5Termset *p, + Fts5Termset *p, int iIdx, - const char *pTerm, int nTerm, + const char *pTerm, int nTerm, int *pbPresent ){ int rc = SQLITE_OK; @@ -194059,9 +229829,9 @@ static int sqlite3Fts5TermsetAdd( hash = hash % ArraySize(p->apHash); for(pEntry=p->apHash[hash]; pEntry; pEntry=pEntry->pNext){ - if( pEntry->iIdx==iIdx - && pEntry->nTerm==nTerm - && memcmp(pEntry->pTerm, pTerm, nTerm)==0 + if( pEntry->iIdx==iIdx + && pEntry->nTerm==nTerm + && memcmp(pEntry->pTerm, pTerm, nTerm)==0 ){ *pbPresent = 1; break; @@ -194123,8 +229893,10 @@ static void sqlite3Fts5TermsetFree(Fts5Termset *p){ #define FTS5_DEFAULT_CRISISMERGE 16 #define FTS5_DEFAULT_HASHSIZE (1024*1024) +#define FTS5_DEFAULT_DELETE_AUTOMERGE 10 /* default 10% */ + /* Maximum allowed page size */ -#define FTS5_MAX_PAGE_SIZE (128*1024) +#define FTS5_MAX_PAGE_SIZE (64*1024) static int fts5_iswhitespace(char x){ return (x==' '); @@ -194135,8 +229907,8 @@ static int fts5_isopenquote(char x){ } /* -** Argument pIn points to a character that is part of a nul-terminated -** string. Return a pointer to the first character following *pIn in +** Argument pIn points to a character that is part of a nul-terminated +** string. Return a pointer to the first character following *pIn in ** the string that is not a white-space character. */ static const char *fts5ConfigSkipWhitespace(const char *pIn){ @@ -194148,8 +229920,8 @@ static const char *fts5ConfigSkipWhitespace(const char *pIn){ } /* -** Argument pIn points to a character that is part of a nul-terminated -** string. Return a pointer to the first character following *pIn in +** Argument pIn points to a character that is part of a nul-terminated +** string. Return a pointer to the first character following *pIn in ** the string that is not a "bareword" character. */ static const char *fts5ConfigSkipBareword(const char *pIn){ @@ -194180,9 +229952,9 @@ static const char *fts5ConfigSkipLiteral(const char *pIn){ p++; if( *p=='\'' ){ p++; - while( (*p>='a' && *p<='f') - || (*p>='A' && *p<='F') - || (*p>='0' && *p<='9') + while( (*p>='a' && *p<='f') + || (*p>='A' && *p<='F') + || (*p>='0' && *p<='9') ){ p++; } @@ -194213,7 +229985,7 @@ static const char *fts5ConfigSkipLiteral(const char *pIn){ if( *p=='+' || *p=='-' ) p++; while( fts5_isdigit(*p) ) p++; - /* At this point, if the literal was an integer, the parse is + /* At this point, if the literal was an integer, the parse is ** finished. Or, if it is a floating point value, it may continue ** with either a decimal point or an 'E' character. */ if( *p=='.' && fts5_isdigit(p[1]) ){ @@ -194237,8 +230009,8 @@ static const char *fts5ConfigSkipLiteral(const char *pIn){ ** nul-terminator byte. ** ** If the close-quote is found, the value returned is the byte offset of -** the character immediately following it. Or, if the close-quote is not -** found, -1 is returned. If -1 is returned, the buffer is left in an +** the character immediately following it. Or, if the close-quote is not +** found, -1 is returned. If -1 is returned, the buffer is left in an ** undefined state. */ static int fts5Dequote(char *z){ @@ -194249,9 +230021,9 @@ static int fts5Dequote(char *z){ /* Set stack variable q to the close-quote character */ assert( q=='[' || q=='\'' || q=='"' || q=='`' ); - if( q=='[' ) q = ']'; + if( q=='[' ) q = ']'; - while( ALWAYS(z[iIn]) ){ + while( z[iIn] ){ if( z[iIn]==q ){ if( z[iIn+1]!=q ){ /* Character iIn was the close quote. */ @@ -194259,7 +230031,7 @@ static int fts5Dequote(char *z){ break; }else{ /* Character iIn and iIn+1 form an escaped quote character. Skip - ** the input cursor past both and copy a single quote character + ** the input cursor past both and copy a single quote character ** to the output buffer. */ iIn += 2; z[iOut++] = q; @@ -194304,8 +230076,8 @@ struct Fts5Enum { typedef struct Fts5Enum Fts5Enum; static int fts5ConfigSetEnum( - const Fts5Enum *aEnum, - const char *zEnum, + const Fts5Enum *aEnum, + const char *zEnum, int *peVal ){ int nEnum = (int)strlen(zEnum); @@ -194396,7 +230168,7 @@ static int fts5ConfigParseSpecial( if( sqlite3_strnicmp("tokenize", zCmd, nCmd)==0 ){ const char *p = (const char*)zArg; - int nArg = (int)strlen(zArg) + 1; + sqlite3_int64 nArg = strlen(zArg) + 1; char **azArg = sqlite3Fts5MallocZero(&rc, sizeof(char*) * nArg); char *pDel = sqlite3Fts5MallocZero(&rc, nArg * 2); char *pSpace = pDel; @@ -194425,8 +230197,8 @@ static int fts5ConfigParseSpecial( *pzErr = sqlite3_mprintf("parse error in tokenize directive"); rc = SQLITE_ERROR; }else{ - rc = sqlite3Fts5GetTokenizer(pGlobal, - (const char**)azArg, nArg, &pConfig->pTok, &pConfig->pTokApi, + rc = sqlite3Fts5GetTokenizer(pGlobal, + (const char**)azArg, (int)nArg, pConfig, pzErr ); } @@ -194453,6 +230225,16 @@ static int fts5ConfigParseSpecial( return rc; } + if( sqlite3_strnicmp("contentless_delete", zCmd, nCmd)==0 ){ + if( (zArg[0]!='0' && zArg[0]!='1') || zArg[1]!='\0' ){ + *pzErr = sqlite3_mprintf("malformed contentless_delete=... directive"); + rc = SQLITE_ERROR; + }else{ + pConfig->bContentlessDelete = (zArg[0]=='1'); + } + return rc; + } + if( sqlite3_strnicmp("content_rowid", zCmd, nCmd)==0 ){ if( pConfig->zContentRowid ){ *pzErr = sqlite3_mprintf("multiple content_rowid=... directives"); @@ -194492,15 +230274,13 @@ static int fts5ConfigParseSpecial( } /* -** Allocate an instance of the default tokenizer ("simple") at +** Allocate an instance of the default tokenizer ("simple") at ** Fts5Config.pTokenizer. Return SQLITE_OK if successful, or an SQLite error ** code if an error occurs. */ static int fts5ConfigDefaultTokenizer(Fts5Global *pGlobal, Fts5Config *pConfig){ assert( pConfig->pTok==0 && pConfig->pTokApi==0 ); - return sqlite3Fts5GetTokenizer( - pGlobal, 0, 0, &pConfig->pTok, &pConfig->pTokApi, 0 - ); + return sqlite3Fts5GetTokenizer(pGlobal, 0, 0, pConfig, 0); } /* @@ -194526,8 +230306,8 @@ static const char *fts5ConfigGobbleWord( ){ const char *zRet = 0; - int nIn = (int)strlen(zIn); - char *zOut = sqlite3_malloc(nIn+1); + sqlite3_int64 nIn = strlen(zIn); + char *zOut = sqlite3_malloc64(nIn+1); assert( *pRc==SQLITE_OK ); *pbQuoted = 0; @@ -194536,7 +230316,7 @@ static const char *fts5ConfigGobbleWord( if( zOut==0 ){ *pRc = SQLITE_NOMEM; }else{ - memcpy(zOut, zIn, nIn+1); + memcpy(zOut, zIn, (size_t)(nIn+1)); if( fts5_isopenquote(zOut[0]) ){ int ii = fts5Dequote(zOut); zRet = &zIn[ii]; @@ -194559,14 +230339,14 @@ static const char *fts5ConfigGobbleWord( } static int fts5ConfigParseColumn( - Fts5Config *p, - char *zCol, - char *zArg, + Fts5Config *p, + char *zCol, + char *zArg, char **pzErr ){ int rc = SQLITE_OK; - if( 0==sqlite3_stricmp(zCol, FTS5_RANK_NAME) - || 0==sqlite3_stricmp(zCol, FTS5_ROWID_NAME) + if( 0==sqlite3_stricmp(zCol, FTS5_RANK_NAME) + || 0==sqlite3_stricmp(zCol, FTS5_ROWID_NAME) ){ *pzErr = sqlite3_mprintf("reserved fts5 column name: %s", zCol); rc = SQLITE_ERROR; @@ -194609,14 +230389,14 @@ static int fts5ConfigMakeExprlist(Fts5Config *p){ /* ** Arguments nArg/azArg contain the string arguments passed to the xCreate -** or xConnect method of the virtual table. This function attempts to +** or xConnect method of the virtual table. This function attempts to ** allocate an instance of Fts5Config containing the results of parsing ** those arguments. ** ** If successful, SQLITE_OK is returned and *ppOut is set to point to the -** new Fts5Config object. If an error occurs, an SQLite error code is +** new Fts5Config object. If an error occurs, an SQLite error code is ** returned, *ppOut is set to NULL and an error message may be left in -** *pzErr. It is the responsibility of the caller to eventually free any +** *pzErr. It is the responsibility of the caller to eventually free any ** such error message using sqlite3_free(). */ static int sqlite3Fts5ConfigParse( @@ -194630,7 +230410,7 @@ static int sqlite3Fts5ConfigParse( int rc = SQLITE_OK; /* Return code */ Fts5Config *pRet; /* New object to return */ int i; - int nByte; + sqlite3_int64 nByte; *ppOut = pRet = (Fts5Config*)sqlite3_malloc(sizeof(Fts5Config)); if( pRet==0 ) return SQLITE_NOMEM; @@ -194640,7 +230420,7 @@ static int sqlite3Fts5ConfigParse( nByte = nArg * (sizeof(char*) + sizeof(u8)); pRet->azCol = (char**)sqlite3Fts5MallocZero(&rc, nByte); - pRet->abUnindexed = (u8*)&pRet->azCol[nArg]; + pRet->abUnindexed = pRet->azCol ? (u8*)&pRet->azCol[nArg] : 0; pRet->zDb = sqlite3Fts5Strndup(&rc, azArg[1], -1); pRet->zName = sqlite3Fts5Strndup(&rc, azArg[2], -1); pRet->bColumnsize = 1; @@ -194653,6 +230433,7 @@ static int sqlite3Fts5ConfigParse( rc = SQLITE_ERROR; } + assert( (pRet->abUnindexed && pRet->azCol) || rc!=SQLITE_OK ); for(i=3; rc==SQLITE_OK && ibContentlessDelete + && pRet->eContent!=FTS5_CONTENT_NONE + ){ + *pzErr = sqlite3_mprintf( + "contentless_delete=1 requires a contentless table" + ); + rc = SQLITE_ERROR; + } + + /* We only allow contentless_delete=1 if columnsize=0 is not present. + ** + ** This restriction may be removed at some point. + */ + if( rc==SQLITE_OK && pRet->bContentlessDelete && pRet->bColumnsize==0 ){ + *pzErr = sqlite3_mprintf( + "contentless_delete=1 is incompatible with columnsize=0" + ); + rc = SQLITE_ERROR; + } + /* If a tokenizer= option was successfully parsed, the tokenizer has ** already been allocated. Otherwise, allocate an instance of the default ** tokenizer (unicode61) now. */ @@ -194703,8 +230511,8 @@ static int sqlite3Fts5ConfigParse( /* If no zContent option was specified, fill in the default values. */ if( rc==SQLITE_OK && pRet->zContent==0 ){ const char *zTail = 0; - assert( pRet->eContent==FTS5_CONTENT_NORMAL - || pRet->eContent==FTS5_CONTENT_NONE + assert( pRet->eContent==FTS5_CONTENT_NORMAL + || pRet->eContent==FTS5_CONTENT_NONE ); if( pRet->eContent==FTS5_CONTENT_NORMAL ){ zTail = "content"; @@ -194775,7 +230583,7 @@ static int sqlite3Fts5ConfigDeclareVtab(Fts5Config *pConfig){ const char *zSep = (i==0?"":", "); zSql = sqlite3Fts5Mprintf(&rc, "%z%s%Q", zSql, zSep, pConfig->azCol[i]); } - zSql = sqlite3Fts5Mprintf(&rc, "%z, %Q HIDDEN, %s HIDDEN)", + zSql = sqlite3Fts5Mprintf(&rc, "%z, %Q HIDDEN, %s HIDDEN)", zSql, pConfig->zName, FTS5_RANK_NAME ); @@ -194784,7 +230592,7 @@ static int sqlite3Fts5ConfigDeclareVtab(Fts5Config *pConfig){ rc = sqlite3_declare_vtab(pConfig->db, zSql); sqlite3_free(zSql); } - + return rc; } @@ -194802,7 +230610,7 @@ static int sqlite3Fts5ConfigDeclareVtab(Fts5Config *pConfig){ ** int iPos // Position of token in input (first token is 0) ** ** If the callback returns a non-zero value the tokenization is abandoned -** and no further callbacks are issued. +** and no further callbacks are issued. ** ** This function returns SQLITE_OK if successful or an SQLite error code ** if an error occurs. If the tokenization was abandoned early because @@ -194832,7 +230640,7 @@ static int sqlite3Fts5Tokenize( */ static const char *fts5ConfigSkipArgs(const char *pIn){ const char *p = pIn; - + while( 1 ){ p = fts5ConfigSkipWhitespace(p); p = fts5ConfigSkipLiteral(p); @@ -194849,7 +230657,7 @@ static const char *fts5ConfigSkipArgs(const char *pIn){ } /* -** Parameter zIn contains a rank() function specification. The format of +** Parameter zIn contains a rank() function specification. The format of ** this is: ** ** + Bareword (function name) @@ -194891,7 +230699,7 @@ static int sqlite3Fts5ConfigParseRank( p++; } if( rc==SQLITE_OK ){ - const char *pArgs; + const char *pArgs; p = fts5ConfigSkipWhitespace(p); pArgs = p; if( *p!=')' ){ @@ -194917,8 +230725,8 @@ static int sqlite3Fts5ConfigParseRank( } static int sqlite3Fts5ConfigSetValue( - Fts5Config *pConfig, - const char *zKey, + Fts5Config *pConfig, + const char *zKey, sqlite3_value *pVal, int *pbBadkey ){ @@ -194929,7 +230737,7 @@ static int sqlite3Fts5ConfigSetValue( if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ pgsz = sqlite3_value_int(pVal); } - if( pgsz<=0 || pgsz>FTS5_MAX_PAGE_SIZE ){ + if( pgsz<32 || pgsz>FTS5_MAX_PAGE_SIZE ){ *pbBadkey = 1; }else{ pConfig->pgsz = pgsz; @@ -194982,10 +230790,23 @@ static int sqlite3Fts5ConfigSetValue( *pbBadkey = 1; }else{ if( nCrisisMerge<=1 ) nCrisisMerge = FTS5_DEFAULT_CRISISMERGE; + if( nCrisisMerge>=FTS5_MAX_SEGMENT ) nCrisisMerge = FTS5_MAX_SEGMENT-1; pConfig->nCrisisMerge = nCrisisMerge; } } + else if( 0==sqlite3_stricmp(zKey, "deletemerge") ){ + int nVal = -1; + if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ + nVal = sqlite3_value_int(pVal); + }else{ + *pbBadkey = 1; + } + if( nVal<0 ) nVal = FTS5_DEFAULT_DELETE_AUTOMERGE; + if( nVal>100 ) nVal = 0; + pConfig->nDeleteMerge = nVal; + } + else if( 0==sqlite3_stricmp(zKey, "rank") ){ const char *zIn = (const char*)sqlite3_value_text(pVal); char *zRank; @@ -195000,6 +230821,18 @@ static int sqlite3Fts5ConfigSetValue( rc = SQLITE_OK; *pbBadkey = 1; } + } + + else if( 0==sqlite3_stricmp(zKey, "secure-delete") ){ + int bVal = -1; + if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ + bVal = sqlite3_value_int(pVal); + } + if( bVal<0 ){ + *pbBadkey = 1; + }else{ + pConfig->bSecureDelete = (bVal ? 1 : 0); + } }else{ *pbBadkey = 1; } @@ -195022,6 +230855,7 @@ static int sqlite3Fts5ConfigLoad(Fts5Config *pConfig, int iCookie){ pConfig->nUsermerge = FTS5_DEFAULT_USERMERGE; pConfig->nCrisisMerge = FTS5_DEFAULT_CRISISMERGE; pConfig->nHashSize = FTS5_DEFAULT_HASHSIZE; + pConfig->nDeleteMerge = FTS5_DEFAULT_DELETE_AUTOMERGE; zSql = sqlite3Fts5Mprintf(&rc, zSelect, pConfig->zDb, pConfig->zName); if( zSql ){ @@ -195043,16 +230877,21 @@ static int sqlite3Fts5ConfigLoad(Fts5Config *pConfig, int iCookie){ } rc = sqlite3_finalize(p); } - - if( rc==SQLITE_OK && iVersion!=FTS5_CURRENT_VERSION ){ + + if( rc==SQLITE_OK + && iVersion!=FTS5_CURRENT_VERSION + && iVersion!=FTS5_CURRENT_VERSION_SECUREDELETE + ){ rc = SQLITE_ERROR; if( pConfig->pzErrmsg ){ assert( 0==*pConfig->pzErrmsg ); - *pConfig->pzErrmsg = sqlite3_mprintf( - "invalid fts5 file format (found %d, expected %d) - run 'rebuild'", - iVersion, FTS5_CURRENT_VERSION + *pConfig->pzErrmsg = sqlite3_mprintf("invalid fts5 file format " + "(found %d, expected %d or %d) - run 'rebuild'", + iVersion, FTS5_CURRENT_VERSION, FTS5_CURRENT_VERSION_SECUREDELETE ); } + }else{ + pConfig->iVersion = iVersion; } if( rc==SQLITE_OK ){ @@ -195080,6 +230919,10 @@ static int sqlite3Fts5ConfigLoad(Fts5Config *pConfig, int iCookie){ /* #include "fts5Int.h" */ /* #include "fts5parse.h" */ +#ifndef SQLITE_FTS5_MAX_EXPR_DEPTH +# define SQLITE_FTS5_MAX_EXPR_DEPTH 256 +#endif + /* ** All token types in the generated fts5parse.h file are greater than 0. */ @@ -195099,6 +230942,7 @@ static void sqlite3Fts5Parser(void*, int, Fts5Token, Fts5Parse*); /* #include */ static void sqlite3Fts5ParserTrace(FILE*, char*); #endif +static int sqlite3Fts5ParserFallback(int); struct Fts5Expr { @@ -195119,11 +230963,17 @@ struct Fts5Expr { ** FTS5_NOT (nChild, apChild valid) ** FTS5_STRING (pNear valid) ** FTS5_TERM (pNear valid) +** +** iHeight: +** Distance from this node to furthest leaf. This is always 0 for nodes +** of type FTS5_STRING and FTS5_TERM. For all other nodes it is one +** greater than the largest child value. */ struct Fts5ExprNode { int eType; /* Node type */ int bEof; /* True at EOF */ int bNomatch; /* True if entry is not a match */ + int iHeight; /* Distance to tree leaf nodes */ /* Next method for this node. */ int (*xNext)(Fts5Expr*, Fts5ExprNode*, int, i64); @@ -195131,7 +230981,7 @@ struct Fts5ExprNode { i64 iRowid; /* Current rowid */ Fts5ExprNearset *pNear; /* For FTS5_STRING - cluster of phrases */ - /* Child nodes. For a NOT node, this array always contains 2 entries. For + /* Child nodes. For a NOT node, this array always contains 2 entries. For ** AND or OR nodes, it contains 2 or more entries. */ int nChild; /* Number of child nodes */ Fts5ExprNode *apChild[1]; /* Array of child nodes */ @@ -195190,12 +231040,39 @@ struct Fts5Parse { int nPhrase; /* Size of apPhrase array */ Fts5ExprPhrase **apPhrase; /* Array of all phrases */ Fts5ExprNode *pExpr; /* Result of a successful parse */ + int bPhraseToAnd; /* Convert "a+b" to "a AND b" */ }; +/* +** Check that the Fts5ExprNode.iHeight variables are set correctly in +** the expression tree passed as the only argument. +*/ +#ifndef NDEBUG +static void assert_expr_depth_ok(int rc, Fts5ExprNode *p){ + if( rc==SQLITE_OK ){ + if( p->eType==FTS5_TERM || p->eType==FTS5_STRING || p->eType==0 ){ + assert( p->iHeight==0 ); + }else{ + int ii; + int iMaxChild = 0; + for(ii=0; iinChild; ii++){ + Fts5ExprNode *pChild = p->apChild[ii]; + iMaxChild = MAX(iMaxChild, pChild->iHeight); + assert_expr_depth_ok(SQLITE_OK, pChild); + } + assert( p->iHeight==iMaxChild+1 ); + } + } +} +#else +# define assert_expr_depth_ok(rc, p) +#endif + static void sqlite3Fts5ParseError(Fts5Parse *pParse, const char *zFmt, ...){ va_list ap; va_start(ap, zFmt); if( pParse->rc==SQLITE_OK ){ + assert( pParse->zErr==0 ); pParse->zErr = sqlite3_vmprintf(zFmt, ap); pParse->rc = SQLITE_ERROR; } @@ -195210,7 +231087,7 @@ static int fts5ExprIsspace(char t){ ** Read the first token from the nul-terminated string at *pz. */ static int fts5ExprGetToken( - Fts5Parse *pParse, + Fts5Parse *pParse, const char **pz, /* IN/OUT: Pointer into buffer */ Fts5Token *pToken ){ @@ -195273,14 +231150,15 @@ static int fts5ExprGetToken( return tok; } -static void *fts5ParseAlloc(u64 t){ return sqlite3_malloc((int)t); } +static void *fts5ParseAlloc(u64 t){ return sqlite3_malloc64((sqlite3_int64)t);} static void fts5ParseFree(void *p){ sqlite3_free(p); } static int sqlite3Fts5ExprNew( Fts5Config *pConfig, /* FTS5 Configuration */ + int bPhraseToAnd, int iCol, const char *zExpr, /* Expression text */ - Fts5Expr **ppNew, + Fts5Expr **ppNew, char **pzErr ){ Fts5Parse sParse; @@ -195293,6 +231171,7 @@ static int sqlite3Fts5ExprNew( *ppNew = 0; *pzErr = 0; memset(&sParse, 0, sizeof(sParse)); + sParse.bPhraseToAnd = bPhraseToAnd; pEngine = sqlite3Fts5ParserAlloc(fts5ParseAlloc); if( pEngine==0 ){ return SQLITE_NOMEM; } sParse.pConfig = pConfig; @@ -195303,6 +231182,8 @@ static int sqlite3Fts5ExprNew( }while( sParse.rc==SQLITE_OK && t!=FTS5_EOF ); sqlite3Fts5ParserFree(pEngine, fts5ParseFree); + assert_expr_depth_ok(sParse.rc, sParse.pExpr); + /* If the LHS of the MATCH expression was a user column, apply the ** implicit column-filter. */ if( iColnCol && sParse.pExpr && sParse.rc==SQLITE_OK ){ @@ -195335,6 +231216,7 @@ static int sqlite3Fts5ExprNew( pNew->pConfig = pConfig; pNew->apExprPhrase = sParse.apPhrase; pNew->nPhrase = sParse.nPhrase; + pNew->bDesc = 0; sParse.apPhrase = 0; } }else{ @@ -195346,6 +231228,95 @@ static int sqlite3Fts5ExprNew( return sParse.rc; } +/* +** Assuming that buffer z is at least nByte bytes in size and contains a +** valid utf-8 string, return the number of characters in the string. +*/ +static int fts5ExprCountChar(const char *z, int nByte){ + int nRet = 0; + int ii; + for(ii=0; ii=3 ){ + int jj; + zExpr[iOut++] = '"'; + for(jj=iFirst; jj0 ){ + int bAnd = 0; + if( pConfig->eDetail!=FTS5_DETAIL_FULL ){ + bAnd = 1; + if( pConfig->eDetail==FTS5_DETAIL_NONE ){ + iCol = pConfig->nCol; + } + } + zExpr[iOut] = '\0'; + rc = sqlite3Fts5ExprNew(pConfig, bAnd, iCol, zExpr, pp,pConfig->pzErrmsg); + }else{ + *pp = 0; + } + sqlite3_free(zExpr); + } + + return rc; +} + /* ** Free the expression node object passed as the only argument. */ @@ -195371,6 +231342,42 @@ static void sqlite3Fts5ExprFree(Fts5Expr *p){ } } +static int sqlite3Fts5ExprAnd(Fts5Expr **pp1, Fts5Expr *p2){ + Fts5Parse sParse; + memset(&sParse, 0, sizeof(sParse)); + + if( *pp1 && p2 ){ + Fts5Expr *p1 = *pp1; + int nPhrase = p1->nPhrase + p2->nPhrase; + + p1->pRoot = sqlite3Fts5ParseNode(&sParse, FTS5_AND, p1->pRoot, p2->pRoot,0); + p2->pRoot = 0; + + if( sParse.rc==SQLITE_OK ){ + Fts5ExprPhrase **ap = (Fts5ExprPhrase**)sqlite3_realloc( + p1->apExprPhrase, nPhrase * sizeof(Fts5ExprPhrase*) + ); + if( ap==0 ){ + sParse.rc = SQLITE_NOMEM; + }else{ + int i; + memmove(&ap[p2->nPhrase], ap, p1->nPhrase*sizeof(Fts5ExprPhrase*)); + for(i=0; inPhrase; i++){ + ap[i] = p2->apExprPhrase[i]; + } + p1->nPhrase = nPhrase; + p1->apExprPhrase = ap; + } + } + sqlite3_free(p2->apExprPhrase); + sqlite3_free(p2); + }else if( p2 ){ + *pp1 = p2; + } + + return sParse.rc; +} + /* ** Argument pTerm must be a synonym iterator. Return the current rowid ** that it points to. @@ -195380,6 +231387,7 @@ static i64 fts5ExprSynonymRowid(Fts5ExprTerm *pTerm, int bDesc, int *pbEof){ int bRetValid = 0; Fts5ExprTerm *p; + assert( pTerm ); assert( pTerm->pSynonym ); assert( bDesc==0 || bDesc==1 ); for(p=pTerm; p; p=p->pSynonym){ @@ -195400,7 +231408,7 @@ static i64 fts5ExprSynonymRowid(Fts5ExprTerm *pTerm, int bDesc, int *pbEof){ ** Argument pTerm must be a synonym iterator. */ static int fts5ExprSynonymList( - Fts5ExprTerm *pTerm, + Fts5ExprTerm *pTerm, i64 iRowid, Fts5Buffer *pBuf, /* Use this buffer for space if required */ u8 **pa, int *pn @@ -195418,8 +231426,8 @@ static int fts5ExprSynonymList( if( sqlite3Fts5IterEof(pIter)==0 && pIter->iRowid==iRowid ){ if( pIter->nData==0 ) continue; if( nIter==nAlloc ){ - int nByte = sizeof(Fts5PoslistReader) * nAlloc * 2; - Fts5PoslistReader *aNew = (Fts5PoslistReader*)sqlite3_malloc(nByte); + sqlite3_int64 nByte = sizeof(Fts5PoslistReader) * nAlloc * 2; + Fts5PoslistReader *aNew = (Fts5PoslistReader*)sqlite3_malloc64(nByte); if( aNew==0 ){ rc = SQLITE_NOMEM; goto synonym_poslist_out; @@ -195473,13 +231481,13 @@ static int fts5ExprSynonymList( /* ** All individual term iterators in pPhrase are guaranteed to be valid and -** pointing to the same rowid when this function is called. This function +** pointing to the same rowid when this function is called. This function ** checks if the current rowid really is a match, and if so populates ** the pPhrase->poslist buffer accordingly. Output parameter *pbMatch ** is set to true if this is really a match, or false otherwise. ** -** SQLITE_OK is returned if an error occurs, or an SQLite error code -** otherwise. It is not considered an error code if the current rowid is +** SQLITE_OK is returned if an error occurs, or an SQLite error code +** otherwise. It is not considered an error code if the current rowid is ** not a match. */ static int fts5ExprPhraseIsMatch( @@ -195493,14 +231501,14 @@ static int fts5ExprPhraseIsMatch( int i; int rc = SQLITE_OK; int bFirst = pPhrase->aTerm[0].bFirst; - + fts5BufferZero(&pPhrase->poslist); /* If the aStatic[] array is not large enough, allocate a large array ** using sqlite3_malloc(). This approach could be improved upon. */ if( pPhrase->nTerm>ArraySize(aStatic) ){ - int nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm; - aIter = (Fts5PoslistReader*)sqlite3_malloc(nByte); + sqlite3_int64 nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm; + aIter = (Fts5PoslistReader*)sqlite3_malloc64(nByte); if( !aIter ) return SQLITE_NOMEM; } memset(aIter, 0, sizeof(Fts5PoslistReader) * pPhrase->nTerm); @@ -195615,7 +231623,7 @@ struct Fts5NearTrimmer { ** function is called, it is a no-op. Or, if an error (e.g. SQLITE_NOMEM) ** occurs within this function (*pRc) is set accordingly before returning. ** The return value is undefined in both these cases. -** +** ** If no error occurs and non-zero (a match) is returned, the position-list ** of each phrase object is edited to contain only those entries that ** meet the constraint before returning. @@ -195634,7 +231642,7 @@ static int fts5ExprNearIsMatch(int *pRc, Fts5ExprNearset *pNear){ /* If the aStatic[] array is not large enough, allocate a large array ** using sqlite3_malloc(). This approach could be improved upon. */ if( pNear->nPhrase>ArraySize(aStatic) ){ - int nByte = sizeof(Fts5NearTrimmer) * pNear->nPhrase; + sqlite3_int64 nByte = sizeof(Fts5NearTrimmer) * pNear->nPhrase; a = (Fts5NearTrimmer*)sqlite3Fts5MallocZero(&rc, nByte); }else{ memset(aStatic, 0, sizeof(aStatic)); @@ -195647,7 +231655,7 @@ static int fts5ExprNearIsMatch(int *pRc, Fts5ExprNearset *pNear){ /* Initialize a lookahead iterator for each phrase. After passing the ** buffer and buffer size to the lookaside-reader init function, zero ** the phrase poslist buffer. The new poslist for the phrase (containing - ** the same entries as the original with some entries removed on account + ** the same entries as the original with some entries removed on account ** of the NEAR constraint) is written over the original even as it is ** being read. This is safe as the entries for the new poslist are a ** subset of the old, so it is not possible for data yet to be read to @@ -195804,7 +231812,7 @@ static int fts5ExprNearTest( ** phrase is not a match, break out of the loop early. */ for(i=0; rc==SQLITE_OK && inPhrase; i++){ Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; - if( pPhrase->nTerm>1 || pPhrase->aTerm[0].pSynonym + if( pPhrase->nTerm>1 || pPhrase->aTerm[0].pSynonym || pNear->pColset || pPhrase->aTerm[0].bFirst ){ int bMatch = 0; @@ -195952,7 +231960,7 @@ static void fts5ExprNodeZeroPoslist(Fts5ExprNode *pNode){ */ static int fts5NodeCompare( Fts5Expr *pExpr, - Fts5ExprNode *p1, + Fts5ExprNode *p1, Fts5ExprNode *p2 ){ if( p2->bEof ) return -1; @@ -195967,7 +231975,7 @@ static int fts5NodeCompare( ** If an EOF is reached before this happens, *pbEof is set to true before ** returning. ** -** SQLITE_OK is returned if an error occurs, or an SQLite error code +** SQLITE_OK is returned if an error occurs, or an SQLite error code ** otherwise. It is not considered an error code if an iterator reaches ** EOF. */ @@ -195984,8 +231992,8 @@ static int fts5ExprNodeTest_STRING( const int bDesc = pExpr->bDesc; /* Check that this node should not be FTS5_TERM */ - assert( pNear->nPhrase>1 - || pNear->apPhrase[0]->nTerm>1 + assert( pNear->nPhrase>1 + || pNear->apPhrase[0]->nTerm>1 || pNear->apPhrase[0]->aTerm[0].pSynonym || pNear->apPhrase[0]->aTerm[0].bFirst ); @@ -196045,7 +232053,7 @@ static int fts5ExprNodeNext_STRING( Fts5Expr *pExpr, /* Expression pPhrase belongs to */ Fts5ExprNode *pNode, /* FTS5_STRING or FTS5_TERM node */ int bFromValid, - i64 iFrom + i64 iFrom ){ Fts5ExprTerm *pTerm = &pNode->pNear->apPhrase[0]->aTerm[0]; int rc = SQLITE_OK; @@ -196063,8 +232071,8 @@ static int fts5ExprNodeNext_STRING( for(p=pTerm; p; p=p->pSynonym){ if( sqlite3Fts5IterEof(p->pIter)==0 ){ i64 ii = p->pIter->iRowid; - if( ii==iRowid - || (bFromValid && ii!=iFrom && (ii>iFrom)==pExpr->bDesc) + if( ii==iRowid + || (bFromValid && ii!=iFrom && (ii>iFrom)==pExpr->bDesc) ){ if( bFromValid ){ rc = sqlite3Fts5IterNextFrom(p->pIter, iFrom); @@ -196110,9 +232118,9 @@ static int fts5ExprNodeTest_TERM( Fts5Expr *pExpr, /* Expression that pNear is a part of */ Fts5ExprNode *pNode /* The "NEAR" node (FTS5_TERM) */ ){ - /* As this "NEAR" object is actually a single phrase that consists + /* As this "NEAR" object is actually a single phrase that consists ** of a single term only, grab pointers into the poslist managed by the - ** fts5_index.c iterator object. This is much faster than synthesizing + ** fts5_index.c iterator object. This is much faster than synthesizing ** a new poslist the way we have to for more complicated phrase or NEAR ** expressions. */ Fts5ExprPhrase *pPhrase = pNode->pNear->apPhrase[0]; @@ -196135,7 +232143,7 @@ static int fts5ExprNodeTest_TERM( ** xNext() method for a node of type FTS5_TERM. */ static int fts5ExprNodeNext_TERM( - Fts5Expr *pExpr, + Fts5Expr *pExpr, Fts5ExprNode *pNode, int bFromValid, i64 iFrom @@ -196178,7 +232186,7 @@ static void fts5ExprNodeTest_OR( } static int fts5ExprNodeNext_OR( - Fts5Expr *pExpr, + Fts5Expr *pExpr, Fts5ExprNode *pNode, int bFromValid, i64 iFrom @@ -196190,7 +232198,7 @@ static int fts5ExprNodeNext_OR( Fts5ExprNode *p1 = pNode->apChild[i]; assert( p1->bEof || fts5RowidCmp(pExpr, p1->iRowid, iLast)>=0 ); if( p1->bEof==0 ){ - if( (p1->iRowid==iLast) + if( (p1->iRowid==iLast) || (bFromValid && fts5RowidCmp(pExpr, p1->iRowid, iFrom)<0) ){ int rc = fts5ExprNodeNext(pExpr, p1, bFromValid, iFrom); @@ -196262,7 +232270,7 @@ static int fts5ExprNodeTest_AND( } static int fts5ExprNodeNext_AND( - Fts5Expr *pExpr, + Fts5Expr *pExpr, Fts5ExprNode *pNode, int bFromValid, i64 iFrom @@ -196305,7 +232313,7 @@ static int fts5ExprNodeTest_NOT( } static int fts5ExprNodeNext_NOT( - Fts5Expr *pExpr, + Fts5Expr *pExpr, Fts5ExprNode *pNode, int bFromValid, i64 iFrom @@ -196362,7 +232370,7 @@ static int fts5ExprNodeTest( return rc; } - + /* ** Set node pNode, which is part of expression pExpr, to point to the first ** match. If there are no matches, set the Node.bEof flag to indicate EOF. @@ -196416,8 +232424,8 @@ static int fts5ExprNodeFirst(Fts5Expr *pExpr, Fts5ExprNode *pNode){ /* ** Begin iterating through the set of documents in index pIdx matched by -** the MATCH expression passed as the first argument. If the "bDesc" -** parameter is passed a non-zero value, iteration is in descending rowid +** the MATCH expression passed as the first argument. If the "bDesc" +** parameter is passed a non-zero value, iteration is in descending rowid ** order. Or, if it is zero, in ascending order. ** ** If iterating in ascending rowid order (bDesc==0), the first document @@ -196439,23 +232447,23 @@ static int sqlite3Fts5ExprFirst(Fts5Expr *p, Fts5Index *pIdx, i64 iFirst, int bD /* If not at EOF but the current rowid occurs earlier than iFirst in ** the iteration order, move to document iFirst or later. */ - if( rc==SQLITE_OK - && 0==pRoot->bEof - && fts5RowidCmp(p, pRoot->iRowid, iFirst)<0 + if( rc==SQLITE_OK + && 0==pRoot->bEof + && fts5RowidCmp(p, pRoot->iRowid, iFirst)<0 ){ rc = fts5ExprNodeNext(p, pRoot, 1, iFirst); } /* If the iterator is not at a real match, skip forward until it is. */ - while( pRoot->bNomatch ){ - assert( pRoot->bEof==0 && rc==SQLITE_OK ); + while( pRoot->bNomatch && rc==SQLITE_OK ){ + assert( pRoot->bEof==0 ); rc = fts5ExprNodeNext(p, pRoot, 0, 0); } return rc; } /* -** Move to the next document +** Move to the next document ** ** Return SQLITE_OK if successful, or an SQLite error code otherwise. It ** is not considered an error if the query does not match any documents. @@ -196543,18 +232551,20 @@ static Fts5ExprNearset *sqlite3Fts5ParseNearset( return pNear; } if( pNear==0 ){ - int nByte = sizeof(Fts5ExprNearset) + SZALLOC * sizeof(Fts5ExprPhrase*); - pRet = sqlite3_malloc(nByte); + sqlite3_int64 nByte; + nByte = sizeof(Fts5ExprNearset) + SZALLOC * sizeof(Fts5ExprPhrase*); + pRet = sqlite3_malloc64(nByte); if( pRet==0 ){ pParse->rc = SQLITE_NOMEM; }else{ - memset(pRet, 0, nByte); + memset(pRet, 0, (size_t)nByte); } }else if( (pNear->nPhrase % SZALLOC)==0 ){ int nNew = pNear->nPhrase + SZALLOC; - int nByte = sizeof(Fts5ExprNearset) + nNew * sizeof(Fts5ExprPhrase*); + sqlite3_int64 nByte; - pRet = (Fts5ExprNearset*)sqlite3_realloc(pNear, nByte); + nByte = sizeof(Fts5ExprNearset) + nNew * sizeof(Fts5ExprPhrase*); + pRet = (Fts5ExprNearset*)sqlite3_realloc64(pNear, nByte); if( pRet==0 ){ pParse->rc = SQLITE_NOMEM; } @@ -196570,6 +232580,9 @@ static Fts5ExprNearset *sqlite3Fts5ParseNearset( }else{ if( pRet->nPhrase>0 ){ Fts5ExprPhrase *pLast = pRet->apPhrase[pRet->nPhrase-1]; + assert( pParse!=0 ); + assert( pParse->apPhrase!=0 ); + assert( pParse->nPhrase>=2 ); assert( pLast==pParse->apPhrase[pParse->nPhrase-2] ); if( pPhrase->nTerm==0 ){ fts5ExprPhraseFree(pPhrase); @@ -196618,12 +232631,12 @@ static int fts5ParseTokenize( if( pPhrase && pPhrase->nTerm>0 && (tflags & FTS5_TOKEN_COLOCATED) ){ Fts5ExprTerm *pSyn; - int nByte = sizeof(Fts5ExprTerm) + sizeof(Fts5Buffer) + nToken+1; - pSyn = (Fts5ExprTerm*)sqlite3_malloc(nByte); + sqlite3_int64 nByte = sizeof(Fts5ExprTerm) + sizeof(Fts5Buffer) + nToken+1; + pSyn = (Fts5ExprTerm*)sqlite3_malloc64(nByte); if( pSyn==0 ){ rc = SQLITE_NOMEM; }else{ - memset(pSyn, 0, nByte); + memset(pSyn, 0, (size_t)nByte); pSyn->zTerm = ((char*)pSyn) + sizeof(Fts5ExprTerm) + sizeof(Fts5Buffer); memcpy(pSyn->zTerm, pToken, nToken); pSyn->pSynonym = pPhrase->aTerm[pPhrase->nTerm-1].pSynonym; @@ -196635,7 +232648,7 @@ static int fts5ParseTokenize( Fts5ExprPhrase *pNew; int nNew = SZALLOC + (pPhrase ? pPhrase->nTerm : 0); - pNew = (Fts5ExprPhrase*)sqlite3_realloc(pPhrase, + pNew = (Fts5ExprPhrase*)sqlite3_realloc64(pPhrase, sizeof(Fts5ExprPhrase) + sizeof(Fts5ExprTerm) * nNew ); if( pNew==0 ){ @@ -196685,6 +232698,20 @@ static void sqlite3Fts5ParseFinished(Fts5Parse *pParse, Fts5ExprNode *p){ pParse->pExpr = p; } +static int parseGrowPhraseArray(Fts5Parse *pParse){ + if( (pParse->nPhrase % 8)==0 ){ + sqlite3_int64 nByte = sizeof(Fts5ExprPhrase*) * (pParse->nPhrase + 8); + Fts5ExprPhrase **apNew; + apNew = (Fts5ExprPhrase**)sqlite3_realloc64(pParse->apPhrase, nByte); + if( apNew==0 ){ + pParse->rc = SQLITE_NOMEM; + return SQLITE_NOMEM; + } + pParse->apPhrase = apNew; + } + return SQLITE_OK; +} + /* ** This function is called by the parser to process a string token. The ** string may or may not be quoted. In any case it is tokenized and a @@ -196720,16 +232747,9 @@ static Fts5ExprPhrase *sqlite3Fts5ParseTerm( }else{ if( pAppend==0 ){ - if( (pParse->nPhrase % 8)==0 ){ - int nByte = sizeof(Fts5ExprPhrase*) * (pParse->nPhrase + 8); - Fts5ExprPhrase **apNew; - apNew = (Fts5ExprPhrase**)sqlite3_realloc(pParse->apPhrase, nByte); - if( apNew==0 ){ - pParse->rc = SQLITE_NOMEM; - fts5ExprPhraseFree(sCtx.pPhrase); - return 0; - } - pParse->apPhrase = apNew; + if( parseGrowPhraseArray(pParse) ){ + fts5ExprPhraseFree(sCtx.pPhrase); + return 0; } pParse->nPhrase++; } @@ -196752,8 +232772,8 @@ static Fts5ExprPhrase *sqlite3Fts5ParseTerm( ** expression passed as the second argument. */ static int sqlite3Fts5ExprClonePhrase( - Fts5Expr *pExpr, - int iPhrase, + Fts5Expr *pExpr, + int iPhrase, Fts5Expr **ppNew ){ int rc = SQLITE_OK; /* Return code */ @@ -196764,24 +232784,26 @@ static int sqlite3Fts5ExprClonePhrase( pOrig = pExpr->apExprPhrase[iPhrase]; pNew = (Fts5Expr*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Expr)); if( rc==SQLITE_OK ){ - pNew->apExprPhrase = (Fts5ExprPhrase**)sqlite3Fts5MallocZero(&rc, + pNew->apExprPhrase = (Fts5ExprPhrase**)sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprPhrase*)); } if( rc==SQLITE_OK ){ - pNew->pRoot = (Fts5ExprNode*)sqlite3Fts5MallocZero(&rc, + pNew->pRoot = (Fts5ExprNode*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprNode)); } if( rc==SQLITE_OK ){ - pNew->pRoot->pNear = (Fts5ExprNearset*)sqlite3Fts5MallocZero(&rc, + pNew->pRoot->pNear = (Fts5ExprNearset*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprNearset) + sizeof(Fts5ExprPhrase*)); } if( rc==SQLITE_OK ){ Fts5Colset *pColsetOrig = pOrig->pNode->pNear->pColset; if( pColsetOrig ){ - int nByte = sizeof(Fts5Colset) + (pColsetOrig->nCol-1) * sizeof(int); - Fts5Colset *pColset = (Fts5Colset*)sqlite3Fts5MallocZero(&rc, nByte); - if( pColset ){ - memcpy(pColset, pColsetOrig, nByte); + sqlite3_int64 nByte; + Fts5Colset *pColset; + nByte = sizeof(Fts5Colset) + (pColsetOrig->nCol-1) * sizeof(int); + pColset = (Fts5Colset*)sqlite3Fts5MallocZero(&rc, nByte); + if( pColset ){ + memcpy(pColset, pColsetOrig, (size_t)nByte); } pNew->pRoot->pNear->pColset = pColset; } @@ -196809,7 +232831,7 @@ static int sqlite3Fts5ExprClonePhrase( sCtx.pPhrase = sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprPhrase)); } - if( rc==SQLITE_OK ){ + if( rc==SQLITE_OK && ALWAYS(sCtx.pPhrase) ){ /* All the allocations succeeded. Put the expression object together. */ pNew->pIndex = pExpr->pIndex; pNew->pConfig = pExpr->pConfig; @@ -196819,9 +232841,9 @@ static int sqlite3Fts5ExprClonePhrase( pNew->pRoot->pNear->nPhrase = 1; sCtx.pPhrase->pNode = pNew->pRoot; - if( pOrig->nTerm==1 - && pOrig->aTerm[0].pSynonym==0 - && pOrig->aTerm[0].bFirst==0 + if( pOrig->nTerm==1 + && pOrig->aTerm[0].pSynonym==0 + && pOrig->aTerm[0].bFirst==0 ){ pNew->pRoot->eType = FTS5_TERM; pNew->pRoot->xNext = fts5ExprNodeNext_TERM; @@ -196854,7 +232876,7 @@ static void sqlite3Fts5ParseNear(Fts5Parse *pParse, Fts5Token *pTok){ } static void sqlite3Fts5ParseSetDistance( - Fts5Parse *pParse, + Fts5Parse *pParse, Fts5ExprNearset *pNear, Fts5Token *p ){ @@ -196883,7 +232905,7 @@ static void sqlite3Fts5ParseSetDistance( ** The second argument passed to this function may be NULL, or it may be ** an existing Fts5Colset object. This function returns a pointer to ** a new colset object containing the contents of (p) with new value column -** number iCol appended. +** number iCol appended. ** ** If an OOM error occurs, store an error code in pParse and return NULL. ** The old colset object (if any) is not freed in this case. @@ -196899,7 +232921,7 @@ static Fts5Colset *fts5ParseColset( assert( pParse->rc==SQLITE_OK ); assert( iCol>=0 && iColpConfig->nCol ); - pNew = sqlite3_realloc(p, sizeof(Fts5Colset) + sizeof(int)*nCol); + pNew = sqlite3_realloc64(p, sizeof(Fts5Colset) + sizeof(int)*nCol); if( pNew==0 ){ pParse->rc = SQLITE_NOMEM; }else{ @@ -196933,7 +232955,7 @@ static Fts5Colset *sqlite3Fts5ParseColsetInvert(Fts5Parse *pParse, Fts5Colset *p Fts5Colset *pRet; int nCol = pParse->pConfig->nCol; - pRet = (Fts5Colset*)sqlite3Fts5MallocZero(&pParse->rc, + pRet = (Fts5Colset*)sqlite3Fts5MallocZero(&pParse->rc, sizeof(Fts5Colset) + sizeof(int)*nCol ); if( pRet ){ @@ -196986,7 +233008,7 @@ static Fts5Colset *sqlite3Fts5ParseColset( /* ** If argument pOrig is NULL, or if (*pRc) is set to anything other than -** SQLITE_OK when this function is called, NULL is returned. +** SQLITE_OK when this function is called, NULL is returned. ** ** Otherwise, a copy of (*pOrig) is made into memory obtained from ** sqlite3Fts5MallocZero() and a pointer to it returned. If the allocation @@ -196995,10 +233017,10 @@ static Fts5Colset *sqlite3Fts5ParseColset( static Fts5Colset *fts5CloneColset(int *pRc, Fts5Colset *pOrig){ Fts5Colset *pRet; if( pOrig ){ - int nByte = sizeof(Fts5Colset) + (pOrig->nCol-1) * sizeof(int); + sqlite3_int64 nByte = sizeof(Fts5Colset) + (pOrig->nCol-1) * sizeof(int); pRet = (Fts5Colset*)sqlite3Fts5MallocZero(pRc, nByte); - if( pRet ){ - memcpy(pRet, pOrig, nByte); + if( pRet ){ + memcpy(pRet, pOrig, (size_t)nByte); } }else{ pRet = 0; @@ -197036,13 +233058,13 @@ static void fts5MergeColset(Fts5Colset *pColset, Fts5Colset *pMerge){ ** zero, or it may create copies of pColset using fts5CloneColset(). */ static void fts5ParseSetColset( - Fts5Parse *pParse, - Fts5ExprNode *pNode, + Fts5Parse *pParse, + Fts5ExprNode *pNode, Fts5Colset *pColset, Fts5Colset **ppFree ){ if( pParse->rc==SQLITE_OK ){ - assert( pNode->eType==FTS5_TERM || pNode->eType==FTS5_STRING + assert( pNode->eType==FTS5_TERM || pNode->eType==FTS5_STRING || pNode->eType==FTS5_AND || pNode->eType==FTS5_OR || pNode->eType==FTS5_NOT || pNode->eType==FTS5_EOF ); @@ -197074,15 +233096,14 @@ static void fts5ParseSetColset( ** Apply colset pColset to expression node pExpr and all of its descendents. */ static void sqlite3Fts5ParseSetColset( - Fts5Parse *pParse, - Fts5ExprNode *pExpr, - Fts5Colset *pColset + Fts5Parse *pParse, + Fts5ExprNode *pExpr, + Fts5Colset *pColset ){ Fts5Colset *pFree = pColset; if( pParse->pConfig->eDetail==FTS5_DETAIL_NONE ){ - pParse->rc = SQLITE_ERROR; - pParse->zErr = sqlite3_mprintf( - "fts5: column queries are not supported (detail=none)" + sqlite3Fts5ParseError(pParse, + "fts5: column queries are not supported (detail=none)" ); }else{ fts5ParseSetColset(pParse, pExpr, pColset, &pFree); @@ -197094,7 +233115,7 @@ static void fts5ExprAssignXNext(Fts5ExprNode *pNode){ switch( pNode->eType ){ case FTS5_STRING: { Fts5ExprNearset *pNear = pNode->pNear; - if( pNear->nPhrase==1 && pNear->apPhrase[0]->nTerm==1 + if( pNear->nPhrase==1 && pNear->apPhrase[0]->nTerm==1 && pNear->apPhrase[0]->aTerm[0].pSynonym==0 && pNear->apPhrase[0]->aTerm[0].bFirst==0 ){ @@ -197124,6 +233145,7 @@ static void fts5ExprAssignXNext(Fts5ExprNode *pNode){ } static void fts5ExprAddChildren(Fts5ExprNode *p, Fts5ExprNode *pSub){ + int ii = p->nChild; if( p->eType!=FTS5_NOT && pSub->eType==p->eType ){ int nByte = sizeof(Fts5ExprNode*) * pSub->nChild; memcpy(&p->apChild[p->nChild], pSub->apChild, nByte); @@ -197132,6 +233154,71 @@ static void fts5ExprAddChildren(Fts5ExprNode *p, Fts5ExprNode *pSub){ }else{ p->apChild[p->nChild++] = pSub; } + for( ; iinChild; ii++){ + p->iHeight = MAX(p->iHeight, p->apChild[ii]->iHeight + 1); + } +} + +/* +** This function is used when parsing LIKE or GLOB patterns against +** trigram indexes that specify either detail=column or detail=none. +** It converts a phrase: +** +** abc + def + ghi +** +** into an AND tree: +** +** abc AND def AND ghi +*/ +static Fts5ExprNode *fts5ParsePhraseToAnd( + Fts5Parse *pParse, + Fts5ExprNearset *pNear +){ + int nTerm = pNear->apPhrase[0]->nTerm; + int ii; + int nByte; + Fts5ExprNode *pRet; + + assert( pNear->nPhrase==1 ); + assert( pParse->bPhraseToAnd ); + + nByte = sizeof(Fts5ExprNode) + nTerm*sizeof(Fts5ExprNode*); + pRet = (Fts5ExprNode*)sqlite3Fts5MallocZero(&pParse->rc, nByte); + if( pRet ){ + pRet->eType = FTS5_AND; + pRet->nChild = nTerm; + pRet->iHeight = 1; + fts5ExprAssignXNext(pRet); + pParse->nPhrase--; + for(ii=0; iirc, sizeof(Fts5ExprPhrase) + ); + if( pPhrase ){ + if( parseGrowPhraseArray(pParse) ){ + fts5ExprPhraseFree(pPhrase); + }else{ + pParse->apPhrase[pParse->nPhrase++] = pPhrase; + pPhrase->nTerm = 1; + pPhrase->aTerm[0].zTerm = sqlite3Fts5Strndup( + &pParse->rc, pNear->apPhrase[0]->aTerm[ii].zTerm, -1 + ); + pRet->apChild[ii] = sqlite3Fts5ParseNode(pParse, FTS5_STRING, + 0, 0, sqlite3Fts5ParseNearset(pParse, 0, pPhrase) + ); + } + } + } + + if( pParse->rc ){ + sqlite3Fts5ParseNodeFree(pRet); + pRet = 0; + }else{ + sqlite3Fts5ParseNearsetFree(pNear); + } + } + + return pRet; } /* @@ -197149,8 +233236,8 @@ static Fts5ExprNode *sqlite3Fts5ParseNode( if( pParse->rc==SQLITE_OK ){ int nChild = 0; /* Number of children of returned node */ - int nByte; /* Bytes of space to allocate for this node */ - + sqlite3_int64 nByte; /* Bytes of space to allocate for this node */ + assert( (eType!=FTS5_STRING && !pNear) || (eType==FTS5_STRING && !pLeft && !pRight) ); @@ -197158,51 +233245,63 @@ static Fts5ExprNode *sqlite3Fts5ParseNode( if( eType!=FTS5_STRING && pLeft==0 ) return pRight; if( eType!=FTS5_STRING && pRight==0 ) return pLeft; - if( eType==FTS5_NOT ){ - nChild = 2; - }else if( eType==FTS5_AND || eType==FTS5_OR ){ - nChild = 2; - if( pLeft->eType==eType ) nChild += pLeft->nChild-1; - if( pRight->eType==eType ) nChild += pRight->nChild-1; - } + if( eType==FTS5_STRING + && pParse->bPhraseToAnd + && pNear->apPhrase[0]->nTerm>1 + ){ + pRet = fts5ParsePhraseToAnd(pParse, pNear); + }else{ + if( eType==FTS5_NOT ){ + nChild = 2; + }else if( eType==FTS5_AND || eType==FTS5_OR ){ + nChild = 2; + if( pLeft->eType==eType ) nChild += pLeft->nChild-1; + if( pRight->eType==eType ) nChild += pRight->nChild-1; + } - nByte = sizeof(Fts5ExprNode) + sizeof(Fts5ExprNode*)*(nChild-1); - pRet = (Fts5ExprNode*)sqlite3Fts5MallocZero(&pParse->rc, nByte); + nByte = sizeof(Fts5ExprNode) + sizeof(Fts5ExprNode*)*(nChild-1); + pRet = (Fts5ExprNode*)sqlite3Fts5MallocZero(&pParse->rc, nByte); - if( pRet ){ - pRet->eType = eType; - pRet->pNear = pNear; - fts5ExprAssignXNext(pRet); - if( eType==FTS5_STRING ){ - int iPhrase; - for(iPhrase=0; iPhrasenPhrase; iPhrase++){ - pNear->apPhrase[iPhrase]->pNode = pRet; - if( pNear->apPhrase[iPhrase]->nTerm==0 ){ - pRet->xNext = 0; - pRet->eType = FTS5_EOF; + if( pRet ){ + pRet->eType = eType; + pRet->pNear = pNear; + fts5ExprAssignXNext(pRet); + if( eType==FTS5_STRING ){ + int iPhrase; + for(iPhrase=0; iPhrasenPhrase; iPhrase++){ + pNear->apPhrase[iPhrase]->pNode = pRet; + if( pNear->apPhrase[iPhrase]->nTerm==0 ){ + pRet->xNext = 0; + pRet->eType = FTS5_EOF; + } } - } - if( pParse->pConfig->eDetail!=FTS5_DETAIL_FULL ){ - Fts5ExprPhrase *pPhrase = pNear->apPhrase[0]; - if( pNear->nPhrase!=1 - || pPhrase->nTerm>1 - || (pPhrase->nTerm>0 && pPhrase->aTerm[0].bFirst) - ){ - assert( pParse->rc==SQLITE_OK ); - pParse->rc = SQLITE_ERROR; - assert( pParse->zErr==0 ); - pParse->zErr = sqlite3_mprintf( - "fts5: %s queries are not supported (detail!=full)", - pNear->nPhrase==1 ? "phrase": "NEAR" - ); + if( pParse->pConfig->eDetail!=FTS5_DETAIL_FULL ){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[0]; + if( pNear->nPhrase!=1 + || pPhrase->nTerm>1 + || (pPhrase->nTerm>0 && pPhrase->aTerm[0].bFirst) + ){ + sqlite3Fts5ParseError(pParse, + "fts5: %s queries are not supported (detail!=full)", + pNear->nPhrase==1 ? "phrase": "NEAR" + ); + sqlite3_free(pRet); + pRet = 0; + } + } + }else{ + fts5ExprAddChildren(pRet, pLeft); + fts5ExprAddChildren(pRet, pRight); + if( pRet->iHeight>SQLITE_FTS5_MAX_EXPR_DEPTH ){ + sqlite3Fts5ParseError(pParse, + "fts5 expression tree is too large (maximum depth %d)", + SQLITE_FTS5_MAX_EXPR_DEPTH + ); sqlite3_free(pRet); pRet = 0; } } - }else{ - fts5ExprAddChildren(pRet, pLeft); - fts5ExprAddChildren(pRet, pRight); } } } @@ -197229,14 +233328,14 @@ static Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( sqlite3Fts5ParseNodeFree(pRight); }else{ - assert( pLeft->eType==FTS5_STRING + assert( pLeft->eType==FTS5_STRING || pLeft->eType==FTS5_TERM || pLeft->eType==FTS5_EOF || pLeft->eType==FTS5_AND ); - assert( pRight->eType==FTS5_STRING - || pRight->eType==FTS5_TERM - || pRight->eType==FTS5_EOF + assert( pRight->eType==FTS5_STRING + || pRight->eType==FTS5_TERM + || pRight->eType==FTS5_EOF ); if( pLeft->eType==FTS5_AND ){ @@ -197244,9 +233343,9 @@ static Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( }else{ pPrev = pLeft; } - assert( pPrev->eType==FTS5_STRING - || pPrev->eType==FTS5_TERM - || pPrev->eType==FTS5_EOF + assert( pPrev->eType==FTS5_STRING + || pPrev->eType==FTS5_TERM + || pPrev->eType==FTS5_EOF ); if( pRight->eType==FTS5_EOF ){ @@ -197280,8 +233379,9 @@ static Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( return pRet; } +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) static char *fts5ExprTermPrint(Fts5ExprTerm *pTerm){ - int nByte = 0; + sqlite3_int64 nByte = 0; Fts5ExprTerm *p; char *zQuoted; @@ -197289,7 +233389,7 @@ static char *fts5ExprTermPrint(Fts5ExprTerm *pTerm){ for(p=pTerm; p; p=p->pSynonym){ nByte += (int)strlen(pTerm->zTerm) * 2 + 3 + 2; } - zQuoted = sqlite3_malloc(nByte); + zQuoted = sqlite3_malloc64(nByte); if( zQuoted ){ int i = 0; @@ -197328,20 +233428,20 @@ static char *fts5PrintfAppend(char *zApp, const char *zFmt, ...){ } /* -** Compose a tcl-readable representation of expression pExpr. Return a -** pointer to a buffer containing that representation. It is the -** responsibility of the caller to at some point free the buffer using +** Compose a tcl-readable representation of expression pExpr. Return a +** pointer to a buffer containing that representation. It is the +** responsibility of the caller to at some point free the buffer using ** sqlite3_free(). */ static char *fts5ExprPrintTcl( - Fts5Config *pConfig, + Fts5Config *pConfig, const char *zNearsetCmd, Fts5ExprNode *pExpr ){ char *zRet = 0; if( pExpr->eType==FTS5_STRING || pExpr->eType==FTS5_TERM ){ Fts5ExprNearset *pNear = pExpr->pNear; - int i; + int i; int iTerm; zRet = fts5PrintfAppend(zRet, "%s ", zNearsetCmd); @@ -197385,15 +233485,17 @@ static char *fts5ExprPrintTcl( if( zRet==0 ) return 0; } + }else if( pExpr->eType==0 ){ + zRet = sqlite3_mprintf("{}"); }else{ char const *zOp = 0; int i; switch( pExpr->eType ){ case FTS5_AND: zOp = "AND"; break; case FTS5_NOT: zOp = "NOT"; break; - default: + default: assert( pExpr->eType==FTS5_OR ); - zOp = "OR"; + zOp = "OR"; break; } @@ -197419,12 +233521,21 @@ static char *fts5ExprPrint(Fts5Config *pConfig, Fts5ExprNode *pExpr){ }else if( pExpr->eType==FTS5_STRING || pExpr->eType==FTS5_TERM ){ Fts5ExprNearset *pNear = pExpr->pNear; - int i; + int i; int iTerm; if( pNear->pColset ){ - int iCol = pNear->pColset->aiCol[0]; - zRet = fts5PrintfAppend(zRet, "%s : ", pConfig->azCol[iCol]); + int ii; + Fts5Colset *pColset = pNear->pColset; + if( pColset->nCol>1 ) zRet = fts5PrintfAppend(zRet, "{"); + for(ii=0; iinCol; ii++){ + zRet = fts5PrintfAppend(zRet, "%s%s", + pConfig->azCol[pColset->aiCol[ii]], ii==pColset->nCol-1 ? "" : " " + ); + } + if( zRet ){ + zRet = fts5PrintfAppend(zRet, "%s : ", pColset->nCol>1 ? "}" : ""); + } if( zRet==0 ) return 0; } @@ -197464,9 +233575,9 @@ static char *fts5ExprPrint(Fts5Config *pConfig, Fts5ExprNode *pExpr){ switch( pExpr->eType ){ case FTS5_AND: zOp = " AND "; break; case FTS5_NOT: zOp = " NOT "; break; - default: + default: assert( pExpr->eType==FTS5_OR ); - zOp = " OR "; + zOp = " OR "; break; } @@ -197478,7 +233589,7 @@ static char *fts5ExprPrint(Fts5Config *pConfig, Fts5ExprNode *pExpr){ }else{ int e = pExpr->apChild[i]->eType; int b = (e!=FTS5_STRING && e!=FTS5_TERM && e!=FTS5_EOF); - zRet = fts5PrintfAppend(zRet, "%s%s%z%s", + zRet = fts5PrintfAppend(zRet, "%s%s%z%s", (i==0 ? "" : zOp), (b?"(":""), z, (b?")":"") ); @@ -197529,7 +233640,7 @@ static void fts5ExprFunction( } nConfig = 3 + (nArg-iArg); - azConfig = (const char**)sqlite3_malloc(sizeof(char*) * nConfig); + azConfig = (const char**)sqlite3_malloc64(sizeof(char*) * nConfig); if( azConfig==0 ){ sqlite3_result_error_nomem(pCtx); return; @@ -197538,14 +233649,16 @@ static void fts5ExprFunction( azConfig[1] = "main"; azConfig[2] = "tbl"; for(i=3; iArgnCol, zExpr, &pExpr, &zErr); + rc = sqlite3Fts5ExprNew(pConfig, 0, pConfig->nCol, zExpr, &pExpr, &zErr); } if( rc==SQLITE_OK ){ char *zText; @@ -197594,7 +233707,7 @@ static void fts5ExprFunctionTcl( /* ** The implementation of an SQLite user-defined-function that accepts a -** single integer as an argument. If the integer is an alpha-numeric +** single integer as an argument. If the integer is an alpha-numeric ** unicode code point, 1 is returned. Otherwise 0. */ static void fts5ExprIsAlnum( @@ -197603,14 +233716,19 @@ static void fts5ExprIsAlnum( sqlite3_value **apVal /* Function arguments */ ){ int iCode; + u8 aArr[32]; if( nArg!=1 ){ - sqlite3_result_error(pCtx, + sqlite3_result_error(pCtx, "wrong number of arguments to function fts5_isalnum", -1 ); return; } + memset(aArr, 0, sizeof(aArr)); + sqlite3Fts5UnicodeCatParse("L*", aArr); + sqlite3Fts5UnicodeCatParse("N*", aArr); + sqlite3Fts5UnicodeCatParse("Co", aArr); iCode = sqlite3_value_int(apVal[0]); - sqlite3_result_int(pCtx, sqlite3Fts5UnicodeIsalnum(iCode)); + sqlite3_result_int(pCtx, aArr[sqlite3Fts5UnicodeCategory((u32)iCode)]); } static void fts5ExprFold( @@ -197619,7 +233737,7 @@ static void fts5ExprFold( sqlite3_value **apVal /* Function arguments */ ){ if( nArg!=1 && nArg!=2 ){ - sqlite3_result_error(pCtx, + sqlite3_result_error(pCtx, "wrong number of arguments to function fts5_fold", -1 ); }else{ @@ -197630,12 +233748,14 @@ static void fts5ExprFold( sqlite3_result_int(pCtx, sqlite3Fts5UnicodeFold(iCode, bRemoveDiacritics)); } } +#endif /* if SQLITE_TEST || SQLITE_FTS5_DEBUG */ /* ** This is called during initialization to register the fts5_expr() scalar ** UDF with the SQLite handle passed as the only argument. */ static int sqlite3Fts5ExprInit(Fts5Global *pGlobal, sqlite3 *db){ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) struct Fts5ExprFunc { const char *z; void (*x)(sqlite3_context*,int,sqlite3_value**); @@ -197653,11 +233773,17 @@ static int sqlite3Fts5ExprInit(Fts5Global *pGlobal, sqlite3 *db){ struct Fts5ExprFunc *p = &aFunc[i]; rc = sqlite3_create_function(db, p->z, -1, SQLITE_UTF8, pCtx, p->x, 0, 0); } +#else + int rc = SQLITE_OK; + UNUSED_PARAM2(pGlobal,db); +#endif - /* Avoid a warning indicating that sqlite3Fts5ParserTrace() is unused */ + /* Avoid warnings indicating that sqlite3Fts5ParserTrace() and + ** sqlite3Fts5ParserFallback() are unused */ #ifndef NDEBUG (void)sqlite3Fts5ParserTrace; #endif + (void)sqlite3Fts5ParserFallback; return rc; } @@ -197701,17 +233827,26 @@ struct Fts5PoslistPopulator { int bMiss; }; +/* +** Clear the position lists associated with all phrases in the expression +** passed as the first argument. Argument bLive is true if the expression +** might be pointing to a real entry, otherwise it has just been reset. +** +** At present this function is only used for detail=col and detail=none +** fts5 tables. This implies that all phrases must be at most 1 token +** in size, as phrase matches are not supported without detail=full. +*/ static Fts5PoslistPopulator *sqlite3Fts5ExprClearPoslists(Fts5Expr *pExpr, int bLive){ Fts5PoslistPopulator *pRet; - pRet = sqlite3_malloc(sizeof(Fts5PoslistPopulator)*pExpr->nPhrase); + pRet = sqlite3_malloc64(sizeof(Fts5PoslistPopulator)*pExpr->nPhrase); if( pRet ){ int i; memset(pRet, 0, sizeof(Fts5PoslistPopulator)*pExpr->nPhrase); for(i=0; inPhrase; i++){ Fts5Buffer *pBuf = &pExpr->apExprPhrase[i]->poslist; Fts5ExprNode *pNode = pExpr->apExprPhrase[i]->pNode; - assert( pExpr->apExprPhrase[i]->nTerm==1 ); - if( bLive && + assert( pExpr->apExprPhrase[i]->nTerm<=1 ); + if( bLive && (pBuf->n==0 || pNode->iRowid!=pExpr->pRoot->iRowid || pNode->bEof) ){ pRet[i].bMiss = 1; @@ -197778,9 +233913,9 @@ static int fts5ExprPopulatePoslistsCb( static int sqlite3Fts5ExprPopulatePoslists( Fts5Config *pConfig, - Fts5Expr *pExpr, + Fts5Expr *pExpr, Fts5PoslistPopulator *aPopulator, - int iCol, + int iCol, const char *z, int n ){ int i; @@ -197792,7 +233927,7 @@ static int sqlite3Fts5ExprPopulatePoslists( for(i=0; inPhrase; i++){ Fts5ExprNode *pNode = pExpr->apExprPhrase[i]->pNode; Fts5Colset *pColset = pNode->pNear->pColset; - if( (pColset && 0==fts5ExprColsetTest(pColset, iCol)) + if( (pColset && 0==fts5ExprColsetTest(pColset, iCol)) || aPopulator[i].bMiss ){ aPopulator[i].bOk = 0; @@ -197801,7 +233936,7 @@ static int sqlite3Fts5ExprPopulatePoslists( } } - return sqlite3Fts5Tokenize(pConfig, + return sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, z, n, (void*)&sCtx, fts5ExprPopulatePoslistsCb ); } @@ -197866,12 +234001,12 @@ static void sqlite3Fts5ExprCheckPoslists(Fts5Expr *pExpr, i64 iRowid){ } /* -** This function is only called for detail=columns tables. +** This function is only called for detail=columns tables. */ static int sqlite3Fts5ExprPhraseCollist( - Fts5Expr *pExpr, - int iPhrase, - const u8 **ppCollist, + Fts5Expr *pExpr, + int iPhrase, + const u8 **ppCollist, int *pnCollist ){ Fts5ExprPhrase *pPhrase = pExpr->apExprPhrase[iPhrase]; @@ -197881,8 +234016,8 @@ static int sqlite3Fts5ExprPhraseCollist( assert( iPhrase>=0 && iPhrasenPhrase ); assert( pExpr->pConfig->eDetail==FTS5_DETAIL_COLUMNS ); - if( pNode->bEof==0 - && pNode->iRowid==pExpr->pRoot->iRowid + if( pNode->bEof==0 + && pNode->iRowid==pExpr->pRoot->iRowid && pPhrase->poslist.n>0 ){ Fts5ExprTerm *pTerm = &pPhrase->aTerm[0]; @@ -197903,7 +234038,6 @@ static int sqlite3Fts5ExprPhraseCollist( return rc; } - /* ** 2014 August 11 ** @@ -197941,9 +234075,9 @@ struct Fts5Hash { }; /* -** Each entry in the hash table is represented by an object of the -** following type. Each object, its key (a nul-terminated string) and -** its current data are stored in a single memory allocation. The +** Each entry in the hash table is represented by an object of the +** following type. Each object, its key (a nul-terminated string) and +** its current data are stored in a single memory allocation. The ** key immediately follows the object in memory. The position list ** data immediately follows the key data in memory. ** @@ -197965,7 +234099,7 @@ struct Fts5Hash { struct Fts5HashEntry { Fts5HashEntry *pHashNext; /* Next hash entry with same hash-key */ Fts5HashEntry *pScanNext; /* Next entry in sorted order */ - + int nAlloc; /* Total size of allocation */ int iSzPoslist; /* Offset of space for 4-byte poslist size */ int nData; /* Total bytes of data (incl. structure) */ @@ -197996,20 +234130,20 @@ static int sqlite3Fts5HashNew(Fts5Config *pConfig, Fts5Hash **ppNew, int *pnByte if( pNew==0 ){ rc = SQLITE_NOMEM; }else{ - int nByte; + sqlite3_int64 nByte; memset(pNew, 0, sizeof(Fts5Hash)); pNew->pnByte = pnByte; pNew->eDetail = pConfig->eDetail; pNew->nSlot = 1024; nByte = sizeof(Fts5HashEntry*) * pNew->nSlot; - pNew->aSlot = (Fts5HashEntry**)sqlite3_malloc(nByte); + pNew->aSlot = (Fts5HashEntry**)sqlite3_malloc64(nByte); if( pNew->aSlot==0 ){ sqlite3_free(pNew); *ppNew = 0; rc = SQLITE_NOMEM; }else{ - memset(pNew->aSlot, 0, nByte); + memset(pNew->aSlot, 0, (size_t)nByte); } } return rc; @@ -198071,7 +234205,7 @@ static int fts5HashResize(Fts5Hash *pHash){ Fts5HashEntry **apNew; Fts5HashEntry **apOld = pHash->aSlot; - apNew = (Fts5HashEntry**)sqlite3_malloc(nNew*sizeof(Fts5HashEntry*)); + apNew = (Fts5HashEntry**)sqlite3_malloc64(nNew*sizeof(Fts5HashEntry*)); if( !apNew ) return SQLITE_NOMEM; memset(apNew, 0, nNew*sizeof(Fts5HashEntry*)); @@ -198093,19 +234227,25 @@ static int fts5HashResize(Fts5Hash *pHash){ return SQLITE_OK; } -static void fts5HashAddPoslistSize(Fts5Hash *pHash, Fts5HashEntry *p){ +static int fts5HashAddPoslistSize( + Fts5Hash *pHash, + Fts5HashEntry *p, + Fts5HashEntry *p2 +){ + int nRet = 0; if( p->iSzPoslist ){ - u8 *pPtr = (u8*)p; + u8 *pPtr = p2 ? (u8*)p2 : (u8*)p; + int nData = p->nData; if( pHash->eDetail==FTS5_DETAIL_NONE ){ - assert( p->nData==p->iSzPoslist ); + assert( nData==p->iSzPoslist ); if( p->bDel ){ - pPtr[p->nData++] = 0x00; + pPtr[nData++] = 0x00; if( p->bContent ){ - pPtr[p->nData++] = 0x00; + pPtr[nData++] = 0x00; } } }else{ - int nSz = (p->nData - p->iSzPoslist - 1); /* Size in bytes */ + int nSz = (nData - p->iSzPoslist - 1); /* Size in bytes */ int nPos = nSz*2 + p->bDel; /* Value of nPos field */ assert( p->bDel==0 || p->bDel==1 ); @@ -198115,14 +234255,19 @@ static void fts5HashAddPoslistSize(Fts5Hash *pHash, Fts5HashEntry *p){ int nByte = sqlite3Fts5GetVarintLen((u32)nPos); memmove(&pPtr[p->iSzPoslist + nByte], &pPtr[p->iSzPoslist + 1], nSz); sqlite3Fts5PutVarint(&pPtr[p->iSzPoslist], nPos); - p->nData += (nByte-1); + nData += (nByte-1); } } - p->iSzPoslist = 0; - p->bDel = 0; - p->bContent = 0; + nRet = nData - p->nData; + if( p2==0 ){ + p->iSzPoslist = 0; + p->bDel = 0; + p->bContent = 0; + p->nData = nData; + } } + return nRet; } /* @@ -198146,16 +234291,16 @@ static int sqlite3Fts5HashWrite( u8 *pPtr; int nIncr = 0; /* Amount to increment (*pHash->pnByte) by */ int bNew; /* If non-delete entry should be written */ - + bNew = (pHash->eDetail==FTS5_DETAIL_FULL); /* Attempt to locate an existing hash entry */ iHash = fts5HashKey2(pHash->nSlot, (u8)bByte, (const u8*)pToken, nToken); for(p=pHash->aSlot[iHash]; p; p=p->pHashNext){ char *zKey = fts5EntryKey(p); - if( zKey[0]==bByte + if( zKey[0]==bByte && p->nKey==nToken - && memcmp(&zKey[1], pToken, nToken)==0 + && memcmp(&zKey[1], pToken, nToken)==0 ){ break; } @@ -198165,7 +234310,7 @@ static int sqlite3Fts5HashWrite( if( p==0 ){ /* Figure out how much space to allocate */ char *zKey; - int nByte = sizeof(Fts5HashEntry) + (nToken+1) + 1 + 64; + sqlite3_int64 nByte = sizeof(Fts5HashEntry) + (nToken+1) + 1 + 64; if( nByte<128 ) nByte = 128; /* Grow the Fts5Hash.aSlot[] array if necessary. */ @@ -198176,10 +234321,10 @@ static int sqlite3Fts5HashWrite( } /* Allocate new Fts5HashEntry and add it to the hash table. */ - p = (Fts5HashEntry*)sqlite3_malloc(nByte); + p = (Fts5HashEntry*)sqlite3_malloc64(nByte); if( !p ) return SQLITE_NOMEM; memset(p, 0, sizeof(Fts5HashEntry)); - p->nAlloc = nByte; + p->nAlloc = (int)nByte; zKey = fts5EntryKey(p); zKey[0] = bByte; memcpy(&zKey[1], pToken, nToken); @@ -198201,11 +234346,10 @@ static int sqlite3Fts5HashWrite( p->iCol = (pHash->eDetail==FTS5_DETAIL_FULL ? 0 : -1); } - nIncr += p->nData; }else{ - /* Appending to an existing hash-entry. Check that there is enough - ** space to append the largest possible new entry. Worst case scenario + /* Appending to an existing hash-entry. Check that there is enough + ** space to append the largest possible new entry. Worst case scenario ** is: ** ** + 9 bytes for a new rowid, @@ -198215,12 +234359,12 @@ static int sqlite3Fts5HashWrite( ** + 5 bytes for the new position offset (32-bit max). */ if( (p->nAlloc - p->nData) < (9 + 4 + 1 + 3 + 5) ){ - int nNew = p->nAlloc * 2; + sqlite3_int64 nNew = p->nAlloc * 2; Fts5HashEntry *pNew; Fts5HashEntry **pp; - pNew = (Fts5HashEntry*)sqlite3_realloc(p, nNew); + pNew = (Fts5HashEntry*)sqlite3_realloc64(p, nNew); if( pNew==0 ) return SQLITE_NOMEM; - pNew->nAlloc = nNew; + pNew->nAlloc = (int)nNew; for(pp=&pHash->aSlot[iHash]; *pp!=p; pp=&(*pp)->pHashNext); *pp = pNew; p = pNew; @@ -198234,8 +234378,9 @@ static int sqlite3Fts5HashWrite( /* If this is a new rowid, append the 4-byte size field for the previous ** entry, and the new rowid for this entry. */ if( iRowid!=p->iRowid ){ - fts5HashAddPoslistSize(pHash, p); - p->nData += sqlite3Fts5PutVarint(&pPtr[p->nData], iRowid - p->iRowid); + u64 iDiff = (u64)iRowid - (u64)p->iRowid; + fts5HashAddPoslistSize(pHash, p, 0); + p->nData += sqlite3Fts5PutVarint(&pPtr[p->nData], iDiff); p->iRowid = iRowid; bNew = 1; p->iSzPoslist = p->nData; @@ -198251,7 +234396,7 @@ static int sqlite3Fts5HashWrite( p->bContent = 1; }else{ /* Append a new column value, if necessary */ - assert( iCol>=p->iCol ); + assert_nc( iCol>=p->iCol ); if( iCol!=p->iCol ){ if( pHash->eDetail==FTS5_DETAIL_FULL ){ pPtr[p->nData++] = 0x01; @@ -198333,7 +234478,7 @@ static Fts5HashEntry *fts5HashEntryMerge( ** list. */ static int fts5HashEntrySort( - Fts5Hash *pHash, + Fts5Hash *pHash, const char *pTerm, int nTerm, /* Query prefix, if any */ Fts5HashEntry **ppSorted ){ @@ -198344,14 +234489,16 @@ static int fts5HashEntrySort( int i; *ppSorted = 0; - ap = sqlite3_malloc(sizeof(Fts5HashEntry*) * nMergeSlot); + ap = sqlite3_malloc64(sizeof(Fts5HashEntry*) * nMergeSlot); if( !ap ) return SQLITE_NOMEM; memset(ap, 0, sizeof(Fts5HashEntry*) * nMergeSlot); for(iSlot=0; iSlotnSlot; iSlot++){ Fts5HashEntry *pIter; for(pIter=pHash->aSlot[iSlot]; pIter; pIter=pIter->pHashNext){ - if( pTerm==0 || 0==memcmp(fts5EntryKey(pIter), pTerm, nTerm) ){ + if( pTerm==0 + || (pIter->nKey+1>=nTerm && 0==memcmp(fts5EntryKey(pIter), pTerm, nTerm)) + ){ Fts5HashEntry *pEntry = pIter; pEntry->pScanNext = 0; for(i=0; ap[i]; i++){ @@ -198368,7 +234515,6 @@ static int fts5HashEntrySort( pList = fts5HashEntryMerge(pList, ap[i]); } - pHash->nEntry = 0; sqlite3_free(ap); *ppSorted = pList; return SQLITE_OK; @@ -198379,8 +234525,9 @@ static int fts5HashEntrySort( */ static int sqlite3Fts5HashQuery( Fts5Hash *pHash, /* Hash table to query */ + int nPre, const char *pTerm, int nTerm, /* Query term */ - const u8 **ppDoclist, /* OUT: Pointer to doclist for pTerm */ + void **ppOut, /* OUT: Pointer to new object */ int *pnDoclist /* OUT: Size of doclist in bytes */ ){ unsigned int iHash = fts5HashKey(pHash->nSlot, (const u8*)pTerm, nTerm); @@ -198389,15 +234536,25 @@ static int sqlite3Fts5HashQuery( for(p=pHash->aSlot[iHash]; p; p=p->pHashNext){ zKey = fts5EntryKey(p); - if( memcmp(zKey, pTerm, nTerm)==0 && zKey[nTerm]==0 ) break; + assert( p->nKey+1==(int)strlen(zKey) ); + if( nTerm==p->nKey+1 && memcmp(zKey, pTerm, nTerm)==0 ) break; } if( p ){ - fts5HashAddPoslistSize(pHash, p); - *ppDoclist = (const u8*)&zKey[nTerm+1]; - *pnDoclist = p->nData - (sizeof(Fts5HashEntry) + nTerm + 1); + int nHashPre = sizeof(Fts5HashEntry) + nTerm + 1; + int nList = p->nData - nHashPre; + u8 *pRet = (u8*)(*ppOut = sqlite3_malloc64(nPre + nList + 10)); + if( pRet ){ + Fts5HashEntry *pFaux = (Fts5HashEntry*)&pRet[nPre-nHashPre]; + memcpy(&pRet[nPre], &((u8*)p)[nHashPre], nList); + nList += fts5HashAddPoslistSize(pHash, p, pFaux); + *pnDoclist = nList; + }else{ + *pnDoclist = 0; + return SQLITE_NOMEM; + } }else{ - *ppDoclist = 0; + *ppOut = 0; *pnDoclist = 0; } @@ -198411,6 +234568,28 @@ static int sqlite3Fts5HashScanInit( return fts5HashEntrySort(p, pTerm, nTerm, &p->pScan); } +#ifdef SQLITE_DEBUG +static int fts5HashCount(Fts5Hash *pHash){ + int nEntry = 0; + int ii; + for(ii=0; iinSlot; ii++){ + Fts5HashEntry *p = 0; + for(p=pHash->aSlot[ii]; p; p=p->pHashNext){ + nEntry++; + } + } + return nEntry; +} +#endif + +/* +** Return true if the hash table is empty, false otherwise. +*/ +static int sqlite3Fts5HashIsEmpty(Fts5Hash *pHash){ + assert( pHash->nEntry==fts5HashCount(pHash) ); + return pHash->nEntry==0; +} + static void sqlite3Fts5HashScanNext(Fts5Hash *p){ assert( !sqlite3Fts5HashScanEof(p) ); p->pScan = p->pScan->pScanNext; @@ -198430,7 +234609,7 @@ static void sqlite3Fts5HashScanEntry( if( (p = pHash->pScan) ){ char *zKey = fts5EntryKey(p); int nTerm = (int)strlen(zKey); - fts5HashAddPoslistSize(pHash, p); + fts5HashAddPoslistSize(pHash, p, 0); *pzTerm = zKey; *ppDoclist = (const u8*)&zKey[nTerm+1]; *pnDoclist = p->nData - (sizeof(Fts5HashEntry) + nTerm + 1); @@ -198441,7 +234620,6 @@ static void sqlite3Fts5HashScanEntry( } } - /* ** 2014 May 31 ** @@ -198454,7 +234632,7 @@ static void sqlite3Fts5HashScanEntry( ** ****************************************************************************** ** -** Low level access to the FTS index stored in the database file. The +** Low level access to the FTS index stored in the database file. The ** routines in this file file implement all read and write access to the ** %_data table. Other parts of the system access this functionality via ** the interface defined in fts5Int.h. @@ -198470,10 +234648,10 @@ static void sqlite3Fts5HashScanEntry( ** As well as the main term index, there may be up to 31 prefix indexes. ** The format is similar to FTS3/4, except that: ** -** * all segment b-tree leaf data is stored in fixed size page records -** (e.g. 1000 bytes). A single doclist may span multiple pages. Care is -** taken to ensure it is possible to iterate in either direction through -** the entries in a doclist, or to seek to a specific entry within a +** * all segment b-tree leaf data is stored in fixed size page records +** (e.g. 1000 bytes). A single doclist may span multiple pages. Care is +** taken to ensure it is possible to iterate in either direction through +** the entries in a doclist, or to seek to a specific entry within a ** doclist, without loading it into memory. ** ** * large doclists that span many pages have associated "doclist index" @@ -198498,6 +234676,26 @@ static void sqlite3Fts5HashScanEntry( # error "FTS5_MAX_PREFIX_INDEXES is too large" #endif +#define FTS5_MAX_LEVEL 64 + +/* +** There are two versions of the format used for the structure record: +** +** 1. the legacy format, that may be read by all fts5 versions, and +** +** 2. the V2 format, which is used by contentless_delete=1 databases. +** +** Both begin with a 4-byte "configuration cookie" value. Then, a legacy +** format structure record contains a varint - the number of levels in +** the structure. Whereas a V2 structure record contains the constant +** 4 bytes [0xff 0x00 0x00 0x01]. This is unambiguous as the value of a +** varint has to be at least 16256 to begin with "0xFF". And the default +** maximum number of levels is 64. +** +** See below for more on structure record formats. +*/ +#define FTS5_STRUCTURE_V2 "\xFF\x00\x00\x01" + /* ** Details: ** @@ -198505,21 +234703,21 @@ static void sqlite3Fts5HashScanEntry( ** ** CREATE TABLE %_data(id INTEGER PRIMARY KEY, block BLOB); ** -** , contains the following 5 types of records. See the comments surrounding -** the FTS5_*_ROWID macros below for a description of how %_data rowids are +** , contains the following 6 types of records. See the comments surrounding +** the FTS5_*_ROWID macros below for a description of how %_data rowids are ** assigned to each fo them. ** ** 1. Structure Records: ** ** The set of segments that make up an index - the index structure - are ** recorded in a single record within the %_data table. The record consists -** of a single 32-bit configuration cookie value followed by a list of -** SQLite varints. If the FTS table features more than one index (because -** there are one or more prefix indexes), it is guaranteed that all share -** the same cookie value. +** of a single 32-bit configuration cookie value followed by a list of +** SQLite varints. ** -** Immediately following the configuration cookie, the record begins with -** three varints: +** If the structure record is a V2 record, the configuration cookie is +** followed by the following 4 bytes: [0xFF 0x00 0x00 0x01]. +** +** Next, the record continues with three varints: ** ** + number of levels, ** + total number of segments on all levels, @@ -198534,6 +234732,12 @@ static void sqlite3Fts5HashScanEntry( ** + first leaf page number (often 1, always greater than 0) ** + final leaf page number ** +** Then, for V2 structures only: +** +** + lower origin counter value, +** + upper origin counter value, +** + the number of tombstone hash pages. +** ** 2. The Averages Record: ** ** A single record within the %_data table. The data is a list of varints. @@ -198545,7 +234749,7 @@ static void sqlite3Fts5HashScanEntry( ** ** TERM/DOCLIST FORMAT: ** -** Most of each segment leaf is taken up by term/doclist data. The +** Most of each segment leaf is taken up by term/doclist data. The ** general format of term/doclist, starting with the first term ** on the leaf page, is: ** @@ -198588,7 +234792,7 @@ static void sqlite3Fts5HashScanEntry( ** ** PAGE FORMAT ** -** Each leaf page begins with a 4-byte header containing 2 16-bit +** Each leaf page begins with a 4-byte header containing 2 16-bit ** unsigned integer fields in big-endian format. They are: ** ** * The byte offset of the first rowid on the page, if it exists @@ -198623,7 +234827,7 @@ static void sqlite3Fts5HashScanEntry( ** 5. Segment doclist indexes: ** ** Doclist indexes are themselves b-trees, however they usually consist of -** a single leaf record only. The format of each doclist index leaf page +** a single leaf record only. The format of each doclist index leaf page ** is: ** ** * Flags byte. Bits are: @@ -198633,8 +234837,8 @@ static void sqlite3Fts5HashScanEntry( ** ** * First rowid on page indicated by previous field. As a varint. ** -** * A list of varints, one for each subsequent termless page. A -** positive delta if the termless page contains at least one rowid, +** * A list of varints, one for each subsequent termless page. A +** positive delta if the termless page contains at least one rowid, ** or an 0x00 byte otherwise. ** ** Internal doclist index nodes are: @@ -198647,8 +234851,40 @@ static void sqlite3Fts5HashScanEntry( ** * Copy of first rowid on page indicated by previous field. As a varint. ** ** * A list of delta-encoded varints - the first rowid on each subsequent -** child page. +** child page. ** +** 6. Tombstone Hash Page +** +** These records are only ever present in contentless_delete=1 tables. +** There are zero or more of these associated with each segment. They +** are used to store the tombstone rowids for rows contained in the +** associated segments. +** +** The set of nHashPg tombstone hash pages associated with a single +** segment together form a single hash table containing tombstone rowids. +** To find the page of the hash on which a key might be stored: +** +** iPg = (rowid % nHashPg) +** +** Then, within page iPg, which has nSlot slots: +** +** iSlot = (rowid / nHashPg) % nSlot +** +** Each tombstone hash page begins with an 8 byte header: +** +** 1-byte: Key-size (the size in bytes of each slot). Either 4 or 8. +** 1-byte: rowid-0-tombstone flag. This flag is only valid on the +** first tombstone hash page for each segment (iPg=0). If set, +** the hash table contains rowid 0. If clear, it does not. +** Rowid 0 is handled specially. +** 2-bytes: unused. +** 4-bytes: Big-endian integer containing number of entries on page. +** +** Following this are nSlot 4 or 8 byte slots (depending on the key-size +** in the first byte of the page header). The number of slots may be +** determined based on the size of the page record and the key-size: +** +** nSlot = (nByte - 8) / key-size */ /* @@ -198664,7 +234900,7 @@ static void sqlite3Fts5HashScanEntry( ** ** Each segment has a unique non-zero 16-bit id. ** -** The rowid for each segment leaf is found by passing the segment id and +** The rowid for each segment leaf is found by passing the segment id and ** the leaf page number to the FTS5_SEGMENT_ROWID macro. Leaves are numbered ** sequentially starting from 1. */ @@ -198682,11 +234918,7 @@ static void sqlite3Fts5HashScanEntry( #define FTS5_SEGMENT_ROWID(segid, pgno) fts5_dri(segid, 0, 0, pgno) #define FTS5_DLIDX_ROWID(segid, height, pgno) fts5_dri(segid, 1, height, pgno) - -/* -** Maximum segments permitted in a single index -*/ -#define FTS5_MAX_SEGMENT 2000 +#define FTS5_TOMBSTONE_ROWID(segid,ipg) fts5_dri(segid+(1<<16), 0, 0, ipg) #ifdef SQLITE_DEBUG static int sqlite3Fts5Corrupt() { return SQLITE_CORRUPT_VTAB; } @@ -198722,6 +234954,12 @@ struct Fts5Data { /* ** One object per %_data table. +** +** nContentlessDelete: +** The number of contentless delete operations since the most recent +** call to fts5IndexFlush() or fts5IndexDiscardData(). This is tracked +** so that extra auto-merge work can be done by fts5IndexFlush() to +** account for the delete operations. */ struct Fts5Index { Fts5Config *pConfig; /* Virtual table configuration */ @@ -198736,6 +234974,8 @@ struct Fts5Index { int nPendingData; /* Current bytes of pending data */ i64 iWriteRowid; /* Rowid for current doc being written */ int bDelete; /* Current write is a delete */ + int nContentlessDelete; /* Number of contentless delete ops */ + int nPendingRow; /* Number of INSERT in hash table */ /* Error state. */ int rc; /* Current error code */ @@ -198745,10 +234985,12 @@ struct Fts5Index { sqlite3_stmt *pWriter; /* "INSERT ... %_data VALUES(?,?)" */ sqlite3_stmt *pDeleter; /* "DELETE FROM %_data ... id>=? AND id<=?" */ sqlite3_stmt *pIdxWriter; /* "INSERT ... %_idx VALUES(?,?,?,?)" */ - sqlite3_stmt *pIdxDeleter; /* "DELETE FROM %_idx WHERE segid=? */ + sqlite3_stmt *pIdxDeleter; /* "DELETE FROM %_idx WHERE segid=?" */ sqlite3_stmt *pIdxSelect; int nRead; /* Total number of blocks read */ + sqlite3_stmt *pDeleteFromIdx; + sqlite3_stmt *pDataVersion; i64 iStructVersion; /* data_version when pStruct read */ Fts5Structure *pStruct; /* Current db structure (or NULL) */ @@ -198766,13 +235008,25 @@ struct Fts5DoclistIter { /* ** The contents of the "structure" record for each index are represented -** using an Fts5Structure record in memory. Which uses instances of the +** using an Fts5Structure record in memory. Which uses instances of the ** other Fts5StructureXXX types as components. +** +** nOriginCntr: +** This value is set to non-zero for structure records created for +** contentlessdelete=1 tables only. In that case it represents the +** origin value to apply to the next top-level segment created. */ struct Fts5StructureSegment { int iSegid; /* Segment id */ int pgnoFirst; /* First leaf page number in segment */ int pgnoLast; /* Last leaf page number in segment */ + + /* contentlessdelete=1 tables only: */ + u64 iOrigin1; + u64 iOrigin2; + int nPgTombstone; /* Number of tombstone hash table pages */ + u64 nEntryTombstone; /* Number of tombstone entries that "count" */ + u64 nEntry; /* Number of rows in this segment */ }; struct Fts5StructureLevel { int nMerge; /* Number of segments in incr-merge */ @@ -198782,6 +235036,7 @@ struct Fts5StructureLevel { struct Fts5Structure { int nRef; /* Object reference count */ u64 nWriteCounter; /* Total leaves written to level 0 */ + u64 nOriginCntr; /* Origin value for next top-level segment */ int nSegment; /* Total segments in this structure */ int nLevel; /* Number of levels in this index */ Fts5StructureLevel aLevel[1]; /* Array of nLevel level objects */ @@ -198839,11 +235094,8 @@ struct Fts5CResult { ** Current leaf page number within segment. ** ** iLeafOffset: -** Byte offset within the current leaf that is the first byte of the +** Byte offset within the current leaf that is the first byte of the ** position list data (one byte passed the position-list size field). -** rowid field of the current entry. Usually this is the size field of the -** position list data. The exception is if the rowid for the current entry -** is the last thing on the leaf page. ** ** pLeaf: ** Buffer containing current leaf page data. Set to NULL at EOF. @@ -198856,7 +235108,7 @@ struct Fts5CResult { ** Mask of FTS5_SEGITER_XXX values. Interpreted as follows: ** ** FTS5_SEGITER_ONETERM: -** If set, set the iterator to point to EOF after the current doclist +** If set, set the iterator to point to EOF after the current doclist ** has been exhausted. Do not proceed to the next term in the segment. ** ** FTS5_SEGITER_REVERSE: @@ -198873,6 +235125,13 @@ struct Fts5CResult { ** ** iTermIdx: ** Index of current term on iTermLeafPgno. +** +** apTombstone/nTombstone: +** These are used for contentless_delete=1 tables only. When the cursor +** is first allocated, the apTombstone[] array is allocated so that it +** is large enough for all tombstones hash pages associated with the +** segment. The pages themselves are loaded lazily from the database as +** they are required. */ struct Fts5SegIter { Fts5StructureSegment *pSeg; /* Segment to iterate through */ @@ -198880,12 +235139,14 @@ struct Fts5SegIter { int iLeafPgno; /* Current leaf page number */ Fts5Data *pLeaf; /* Current leaf data */ Fts5Data *pNextLeaf; /* Leaf page (iLeafPgno+1) */ - int iLeafOffset; /* Byte offset within current leaf */ + i64 iLeafOffset; /* Byte offset within current leaf */ + Fts5Data **apTombstone; /* Array of tombstone pages */ + int nTombstone; /* Next method */ void (*xNext)(Fts5Index*, Fts5SegIter*, int*); - /* The page and offset from which the current term was read. The offset + /* The page and offset from which the current term was read. The offset ** is the offset of the first rowid in the current doclist. */ int iTermLeafPgno; int iTermLeafOffset; @@ -198908,7 +235169,7 @@ struct Fts5SegIter { }; /* -** Argument is a pointer to an Fts5Data structure that contains a +** Argument is a pointer to an Fts5Data structure that contains a ** leaf page. */ #define ASSERT_SZLEAF_OK(x) assert( \ @@ -198918,7 +235179,7 @@ struct Fts5SegIter { #define FTS5_SEGITER_ONETERM 0x01 #define FTS5_SEGITER_REVERSE 0x02 -/* +/* ** Argument is a pointer to an Fts5Data structure that contains a leaf ** page. This macro evaluates to true if the leaf contains no terms, or ** false if it contains at least one term. @@ -198940,13 +235201,13 @@ struct Fts5SegIter { ** on empty segments. ** ** The results of comparing segments aSeg[N] and aSeg[N+1], where N is an -** even number, is stored in aFirst[(nSeg+N)/2]. The "result" of the +** even number, is stored in aFirst[(nSeg+N)/2]. The "result" of the ** comparison in this context is the index of the iterator that currently ** points to the smaller term/rowid combination. Iterators at EOF are ** considered to be greater than all other iterators. ** ** aFirst[1] contains the index in aSeg[] of the iterator that points to -** the smallest key overall. aFirst[0] is unused. +** the smallest key overall. aFirst[0] is unused. ** ** poslist: ** Used by sqlite3Fts5IterPoslist() when the poslist needs to be buffered. @@ -198956,7 +235217,6 @@ struct Fts5Iter { Fts5IndexIter base; /* Base class containing output vars */ Fts5Index *pIndex; /* Index that owns this iterator */ - Fts5Structure *pStruct; /* Database structure for this iterator */ Fts5Buffer poslist; /* Buffer containing current poslist */ Fts5Colset *pColset; /* Restrict matches to these columns */ @@ -199009,7 +235269,61 @@ static void fts5PutU16(u8 *aOut, u16 iVal){ static u16 fts5GetU16(const u8 *aIn){ return ((u16)aIn[0] << 8) + aIn[1]; -} +} + +/* +** The only argument points to a buffer at least 8 bytes in size. This +** function interprets the first 8 bytes of the buffer as a 64-bit big-endian +** unsigned integer and returns the result. +*/ +static u64 fts5GetU64(u8 *a){ + return ((u64)a[0] << 56) + + ((u64)a[1] << 48) + + ((u64)a[2] << 40) + + ((u64)a[3] << 32) + + ((u64)a[4] << 24) + + ((u64)a[5] << 16) + + ((u64)a[6] << 8) + + ((u64)a[7] << 0); +} + +/* +** The only argument points to a buffer at least 4 bytes in size. This +** function interprets the first 4 bytes of the buffer as a 32-bit big-endian +** unsigned integer and returns the result. +*/ +static u32 fts5GetU32(const u8 *a){ + return ((u32)a[0] << 24) + + ((u32)a[1] << 16) + + ((u32)a[2] << 8) + + ((u32)a[3] << 0); +} + +/* +** Write iVal, formated as a 64-bit big-endian unsigned integer, to the +** buffer indicated by the first argument. +*/ +static void fts5PutU64(u8 *a, u64 iVal){ + a[0] = ((iVal >> 56) & 0xFF); + a[1] = ((iVal >> 48) & 0xFF); + a[2] = ((iVal >> 40) & 0xFF); + a[3] = ((iVal >> 32) & 0xFF); + a[4] = ((iVal >> 24) & 0xFF); + a[5] = ((iVal >> 16) & 0xFF); + a[6] = ((iVal >> 8) & 0xFF); + a[7] = ((iVal >> 0) & 0xFF); +} + +/* +** Write iVal, formated as a 32-bit big-endian unsigned integer, to the +** buffer indicated by the first argument. +*/ +static void fts5PutU32(u8 *a, u32 iVal){ + a[0] = ((iVal >> 24) & 0xFF); + a[1] = ((iVal >> 16) & 0xFF); + a[2] = ((iVal >> 8) & 0xFF); + a[3] = ((iVal >> 0) & 0xFF); +} /* ** Allocate and return a buffer at least nByte bytes in size. @@ -199017,7 +235331,7 @@ static u16 fts5GetU16(const u8 *aIn){ ** If an OOM error is encountered, return NULL and set the error code in ** the Fts5Index handle passed as the first argument. */ -static void *fts5IdxMalloc(Fts5Index *p, int nByte){ +static void *fts5IdxMalloc(Fts5Index *p, sqlite3_int64 nByte){ return sqlite3Fts5MallocZero(&p->rc, nByte); } @@ -199050,8 +235364,11 @@ static int fts5BufferCompareBlob( ** res = *pLeft - *pRight */ static int fts5BufferCompare(Fts5Buffer *pLeft, Fts5Buffer *pRight){ - int nCmp = MIN(pLeft->n, pRight->n); - int res = memcmp(pLeft->p, pRight->p, nCmp); + int nCmp, res; + nCmp = MIN(pLeft->n, pRight->n); + assert( nCmp<=0 || pLeft->p!=0 ); + assert( nCmp<=0 || pRight->p!=0 ); + res = fts5Memcmp(pLeft->p, pRight->p, nCmp); return (res==0 ? (pLeft->n - pRight->n) : res); } @@ -199064,7 +235381,7 @@ static int fts5LeafFirstTermOff(Fts5Data *pLeaf){ /* ** Close the read-only blob handle, if it is open. */ -static void fts5CloseReader(Fts5Index *p){ +static void sqlite3Fts5IndexCloseReader(Fts5Index *p){ if( p->pReader ){ sqlite3_blob *pReader = p->pReader; p->pReader = 0; @@ -199075,7 +235392,7 @@ static void fts5CloseReader(Fts5Index *p){ /* ** Retrieve a record from the %_data table. ** -** If an error occurs, NULL is returned and an error left in the +** If an error occurs, NULL is returned and an error left in the ** Fts5Index object. */ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ @@ -199093,16 +235410,16 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ assert( p->pReader==0 ); p->pReader = pBlob; if( rc!=SQLITE_OK ){ - fts5CloseReader(p); + sqlite3Fts5IndexCloseReader(p); } if( rc==SQLITE_ABORT ) rc = SQLITE_OK; } - /* If the blob handle is not open at this point, open it and seek + /* If the blob handle is not open at this point, open it and seek ** to the requested entry. */ if( p->pReader==0 && rc==SQLITE_OK ){ Fts5Config *pConfig = p->pConfig; - rc = sqlite3_blob_open(pConfig->db, + rc = sqlite3_blob_open(pConfig->db, pConfig->zDb, p->zDataTbl, "block", iRowid, 0, &p->pReader ); } @@ -199110,15 +235427,15 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ /* If either of the sqlite3_blob_open() or sqlite3_blob_reopen() calls ** above returned SQLITE_ERROR, return SQLITE_CORRUPT_VTAB instead. ** All the reasons those functions might return SQLITE_ERROR - missing - ** table, missing row, non-blob/text in block column - indicate + ** table, missing row, non-blob/text in block column - indicate ** backing store corruption. */ if( rc==SQLITE_ERROR ) rc = FTS5_CORRUPT; if( rc==SQLITE_OK ){ u8 *aOut = 0; /* Read blob data into this buffer */ int nByte = sqlite3_blob_bytes(p->pReader); - int nAlloc = sizeof(Fts5Data) + nByte + FTS5_DATA_PADDING; - pRet = (Fts5Data*)sqlite3_malloc(nAlloc); + sqlite3_int64 nAlloc = sizeof(Fts5Data) + nByte + FTS5_DATA_PADDING; + pRet = (Fts5Data*)sqlite3_malloc64(nAlloc); if( pRet ){ pRet->nn = nByte; aOut = pRet->p = (u8*)&pRet[1]; @@ -199134,6 +235451,8 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ pRet = 0; }else{ /* TODO1: Fix this */ + pRet->p[nByte] = 0x00; + pRet->p[nByte+1] = 0x00; pRet->szLeaf = fts5GetU16(&pRet->p[2]); } } @@ -199145,6 +235464,7 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ return pRet; } + /* ** Release a reference to data record returned by an earlier call to ** fts5DataRead(). @@ -199156,7 +235476,7 @@ static void fts5DataRelease(Fts5Data *pData){ static Fts5Data *fts5LeafRead(Fts5Index *p, i64 iRowid){ Fts5Data *pRet = fts5DataRead(p, iRowid); if( pRet ){ - if( pRet->szLeaf>pRet->nn ){ + if( pRet->nn<4 || pRet->szLeaf>pRet->nn ){ p->rc = FTS5_CORRUPT; fts5DataRelease(pRet); pRet = 0; @@ -199173,7 +235493,8 @@ static int fts5IndexPrepareStmt( if( p->rc==SQLITE_OK ){ if( zSql ){ p->rc = sqlite3_prepare_v3(p->pConfig->db, zSql, -1, - SQLITE_PREPARE_PERSISTENT, ppStmt, 0); + SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_NO_VTAB, + ppStmt, 0); }else{ p->rc = SQLITE_NOMEM; } @@ -199192,7 +235513,7 @@ static void fts5DataWrite(Fts5Index *p, i64 iRowid, const u8 *pData, int nData){ if( p->pWriter==0 ){ Fts5Config *pConfig = p->pConfig; fts5IndexPrepareStmt(p, &p->pWriter, sqlite3_mprintf( - "REPLACE INTO '%q'.'%q_data'(id, block) VALUES(?,?)", + "REPLACE INTO '%q'.'%q_data'(id, block) VALUES(?,?)", pConfig->zDb, pConfig->zName )); if( p->rc ) return; @@ -199214,23 +235535,12 @@ static void fts5DataDelete(Fts5Index *p, i64 iFirst, i64 iLast){ if( p->rc!=SQLITE_OK ) return; if( p->pDeleter==0 ){ - int rc; Fts5Config *pConfig = p->pConfig; char *zSql = sqlite3_mprintf( - "DELETE FROM '%q'.'%q_data' WHERE id>=? AND id<=?", + "DELETE FROM '%q'.'%q_data' WHERE id>=? AND id<=?", pConfig->zDb, pConfig->zName ); - if( zSql==0 ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_prepare_v3(pConfig->db, zSql, -1, - SQLITE_PREPARE_PERSISTENT, &p->pDeleter, 0); - sqlite3_free(zSql); - } - if( rc!=SQLITE_OK ){ - p->rc = rc; - return; - } + if( fts5IndexPrepareStmt(p, &p->pDeleter, zSql) ) return; } sqlite3_bind_int64(p->pDeleter, 1, iFirst); @@ -199242,10 +235552,17 @@ static void fts5DataDelete(Fts5Index *p, i64 iFirst, i64 iLast){ /* ** Remove all records associated with segment iSegid. */ -static void fts5DataRemoveSegment(Fts5Index *p, int iSegid){ +static void fts5DataRemoveSegment(Fts5Index *p, Fts5StructureSegment *pSeg){ + int iSegid = pSeg->iSegid; i64 iFirst = FTS5_SEGMENT_ROWID(iSegid, 0); i64 iLast = FTS5_SEGMENT_ROWID(iSegid+1, 0)-1; fts5DataDelete(p, iFirst, iLast); + + if( pSeg->nPgTombstone ){ + i64 iTomb1 = FTS5_TOMBSTONE_ROWID(iSegid, 0); + i64 iTomb2 = FTS5_TOMBSTONE_ROWID(iSegid, pSeg->nPgTombstone-1); + fts5DataDelete(p, iTomb1, iTomb2); + } if( p->pIdxDeleter==0 ){ Fts5Config *pConfig = p->pConfig; fts5IndexPrepareStmt(p, &p->pIdxDeleter, sqlite3_mprintf( @@ -199261,7 +235578,7 @@ static void fts5DataRemoveSegment(Fts5Index *p, int iSegid){ } /* -** Release a reference to an Fts5Structure object returned by an earlier +** Release a reference to an Fts5Structure object returned by an earlier ** call to fts5StructureRead() or fts5StructureDecode(). */ static void fts5StructureRelease(Fts5Structure *pStruct){ @@ -199279,6 +235596,58 @@ static void fts5StructureRef(Fts5Structure *pStruct){ pStruct->nRef++; } +static void *sqlite3Fts5StructureRef(Fts5Index *p){ + fts5StructureRef(p->pStruct); + return (void*)p->pStruct; +} +static void sqlite3Fts5StructureRelease(void *p){ + if( p ){ + fts5StructureRelease((Fts5Structure*)p); + } +} +static int sqlite3Fts5StructureTest(Fts5Index *p, void *pStruct){ + if( p->pStruct!=(Fts5Structure*)pStruct ){ + return SQLITE_ABORT; + } + return SQLITE_OK; +} + +/* +** Ensure that structure object (*pp) is writable. +** +** This function is a no-op if (*pRc) is not SQLITE_OK when it is called. If +** an error occurs, (*pRc) is set to an SQLite error code before returning. +*/ +static void fts5StructureMakeWritable(int *pRc, Fts5Structure **pp){ + Fts5Structure *p = *pp; + if( *pRc==SQLITE_OK && p->nRef>1 ){ + i64 nByte = sizeof(Fts5Structure)+(p->nLevel-1)*sizeof(Fts5StructureLevel); + Fts5Structure *pNew; + pNew = (Fts5Structure*)sqlite3Fts5MallocZero(pRc, nByte); + if( pNew ){ + int i; + memcpy(pNew, p, nByte); + for(i=0; inLevel; i++) pNew->aLevel[i].aSeg = 0; + for(i=0; inLevel; i++){ + Fts5StructureLevel *pLvl = &pNew->aLevel[i]; + nByte = sizeof(Fts5StructureSegment) * pNew->aLevel[i].nSeg; + pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(pRc, nByte); + if( pLvl->aSeg==0 ){ + for(i=0; inLevel; i++){ + sqlite3_free(pNew->aLevel[i].aSeg); + } + sqlite3_free(pNew); + return; + } + memcpy(pLvl->aSeg, p->aLevel[i].aSeg, nByte); + } + p->nRef--; + pNew->nRef = 1; + } + *pp = pNew; + } +} + /* ** Deserialize and return the structure record currently stored in serialized ** form within buffer pData/nData. @@ -199302,17 +235671,30 @@ static int fts5StructureDecode( int iLvl; int nLevel = 0; int nSegment = 0; - int nByte; /* Bytes of space to allocate at pRet */ + sqlite3_int64 nByte; /* Bytes of space to allocate at pRet */ Fts5Structure *pRet = 0; /* Structure object to return */ + int bStructureV2 = 0; /* True for FTS5_STRUCTURE_V2 */ + u64 nOriginCntr = 0; /* Largest origin value seen so far */ /* Grab the cookie value */ if( piCookie ) *piCookie = sqlite3Fts5Get32(pData); i = 4; + /* Check if this is a V2 structure record. Set bStructureV2 if it is. */ + if( 0==memcmp(&pData[i], FTS5_STRUCTURE_V2, 4) ){ + i += 4; + bStructureV2 = 1; + } + /* Read the total number of levels and segments from the start of the ** structure record. */ i += fts5GetVarint32(&pData[i], nLevel); i += fts5GetVarint32(&pData[i], nSegment); + if( nLevel>FTS5_MAX_SEGMENT || nLevel<0 + || nSegment>FTS5_MAX_SEGMENT || nSegment<0 + ){ + return FTS5_CORRUPT; + } nByte = ( sizeof(Fts5Structure) + /* Main structure */ sizeof(Fts5StructureLevel) * (nLevel-1) /* aLevel[] array */ @@ -199335,25 +235717,47 @@ static int fts5StructureDecode( }else{ i += fts5GetVarint32(&pData[i], pLvl->nMerge); i += fts5GetVarint32(&pData[i], nTotal); - assert( nTotal>=pLvl->nMerge ); - pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&rc, + if( nTotalnMerge ) rc = FTS5_CORRUPT; + pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&rc, nTotal * sizeof(Fts5StructureSegment) ); + nSegment -= nTotal; } if( rc==SQLITE_OK ){ pLvl->nSeg = nTotal; for(iSeg=0; iSegaSeg[iSeg]; if( i>=nData ){ rc = FTS5_CORRUPT; break; } - i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].iSegid); - i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoFirst); - i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoLast); + assert( pSeg!=0 ); + i += fts5GetVarint32(&pData[i], pSeg->iSegid); + i += fts5GetVarint32(&pData[i], pSeg->pgnoFirst); + i += fts5GetVarint32(&pData[i], pSeg->pgnoLast); + if( bStructureV2 ){ + i += fts5GetVarint(&pData[i], &pSeg->iOrigin1); + i += fts5GetVarint(&pData[i], &pSeg->iOrigin2); + i += fts5GetVarint32(&pData[i], pSeg->nPgTombstone); + i += fts5GetVarint(&pData[i], &pSeg->nEntryTombstone); + i += fts5GetVarint(&pData[i], &pSeg->nEntry); + nOriginCntr = MAX(nOriginCntr, pSeg->iOrigin2); + } + if( pSeg->pgnoLastpgnoFirst ){ + rc = FTS5_CORRUPT; + break; + } } + if( iLvl>0 && pLvl[-1].nMerge && nTotal==0 ) rc = FTS5_CORRUPT; + if( iLvl==nLevel-1 && pLvl->nMerge ) rc = FTS5_CORRUPT; } } + if( nSegment!=0 && rc==SQLITE_OK ) rc = FTS5_CORRUPT; + if( bStructureV2 ){ + pRet->nOriginCntr = nOriginCntr+1; + } + if( rc!=SQLITE_OK ){ fts5StructureRelease(pRet); pRet = 0; @@ -199365,18 +235769,21 @@ static int fts5StructureDecode( } /* -** +** Add a level to the Fts5Structure.aLevel[] array of structure object +** (*ppStruct). */ static void fts5StructureAddLevel(int *pRc, Fts5Structure **ppStruct){ + fts5StructureMakeWritable(pRc, ppStruct); + assert( (ppStruct!=0 && (*ppStruct)!=0) || (*pRc)!=SQLITE_OK ); if( *pRc==SQLITE_OK ){ Fts5Structure *pStruct = *ppStruct; int nLevel = pStruct->nLevel; - int nByte = ( + sqlite3_int64 nByte = ( sizeof(Fts5Structure) + /* Main structure */ sizeof(Fts5StructureLevel) * (nLevel+1) /* aLevel[] array */ ); - pStruct = sqlite3_realloc(pStruct, nByte); + pStruct = sqlite3_realloc64(pStruct, nByte); if( pStruct ){ memset(&pStruct->aLevel[nLevel], 0, sizeof(Fts5StructureLevel)); pStruct->nLevel++; @@ -199392,19 +235799,19 @@ static void fts5StructureAddLevel(int *pRc, Fts5Structure **ppStruct){ ** segments. */ static void fts5StructureExtendLevel( - int *pRc, - Fts5Structure *pStruct, - int iLvl, - int nExtra, + int *pRc, + Fts5Structure *pStruct, + int iLvl, + int nExtra, int bInsert ){ if( *pRc==SQLITE_OK ){ Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; Fts5StructureSegment *aNew; - int nByte; + sqlite3_int64 nByte; nByte = (pLvl->nSeg + nExtra) * sizeof(Fts5StructureSegment); - aNew = sqlite3_realloc(pLvl->aSeg, nByte); + aNew = sqlite3_realloc64(pLvl->aSeg, nByte); if( aNew ){ if( bInsert==0 ){ memset(&aNew[pLvl->nSeg], 0, sizeof(Fts5StructureSegment) * nExtra); @@ -199431,7 +235838,7 @@ static Fts5Structure *fts5StructureReadUncached(Fts5Index *p){ /* TODO: Do we need this if the leaf-index is appended? Probably... */ memset(&pData->p[pData->nn], 0, FTS5_DATA_PADDING); p->rc = fts5StructureDecode(pData->p, pData->nn, &iCookie, &pRet); - if( p->rc==SQLITE_OK && pConfig->iCookie!=iCookie ){ + if( p->rc==SQLITE_OK && (pConfig->pgsz==0 || pConfig->iCookie!=iCookie) ){ p->rc = sqlite3Fts5ConfigLoad(pConfig, iCookie); } fts5DataRelease(pData); @@ -199449,7 +235856,7 @@ static i64 fts5IndexDataVersion(Fts5Index *p){ if( p->rc==SQLITE_OK ){ if( p->pDataVersion==0 ){ - p->rc = fts5IndexPrepareStmt(p, &p->pDataVersion, + p->rc = fts5IndexPrepareStmt(p, &p->pDataVersion, sqlite3_mprintf("PRAGMA %Q.data_version", p->pConfig->zDb) ); if( p->rc ) return 0; @@ -199468,7 +235875,7 @@ static i64 fts5IndexDataVersion(Fts5Index *p){ ** Read, deserialize and return the structure record. ** ** The Fts5Structure.aLevel[] and each Fts5StructureLevel.aSeg[] array -** are over-allocated as described for function fts5StructureDecode() +** are over-allocated as described for function fts5StructureDecode() ** above. ** ** If an error occurs, NULL is returned and an error code left in the @@ -199562,6 +235969,7 @@ static void fts5StructureWrite(Fts5Index *p, Fts5Structure *pStruct){ Fts5Buffer buf; /* Buffer to serialize record into */ int iLvl; /* Used to iterate through levels */ int iCookie; /* Cookie value to store */ + int nHdr = (pStruct->nOriginCntr>0 ? (4+4+9+9+9) : (4+9+9)); assert( pStruct->nSegment==fts5StructureCountSegments(pStruct) ); memset(&buf, 0, sizeof(Fts5Buffer)); @@ -199570,9 +235978,12 @@ static void fts5StructureWrite(Fts5Index *p, Fts5Structure *pStruct){ iCookie = p->pConfig->iCookie; if( iCookie<0 ) iCookie = 0; - if( 0==sqlite3Fts5BufferSize(&p->rc, &buf, 4+9+9+9) ){ + if( 0==sqlite3Fts5BufferSize(&p->rc, &buf, nHdr) ){ sqlite3Fts5Put32(buf.p, iCookie); buf.n = 4; + if( pStruct->nOriginCntr>0 ){ + fts5BufferSafeAppendBlob(&buf, FTS5_STRUCTURE_V2, 4); + } fts5BufferSafeAppendVarint(&buf, pStruct->nLevel); fts5BufferSafeAppendVarint(&buf, pStruct->nSegment); fts5BufferSafeAppendVarint(&buf, (i64)pStruct->nWriteCounter); @@ -199586,9 +235997,17 @@ static void fts5StructureWrite(Fts5Index *p, Fts5Structure *pStruct){ assert( pLvl->nMerge<=pLvl->nSeg ); for(iSeg=0; iSegnSeg; iSeg++){ - fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].iSegid); - fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].pgnoFirst); - fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].pgnoLast); + Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg]; + fts5BufferAppendVarint(&p->rc, &buf, pSeg->iSegid); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->pgnoFirst); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->pgnoLast); + if( pStruct->nOriginCntr>0 ){ + fts5BufferAppendVarint(&p->rc, &buf, pSeg->iOrigin1); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->iOrigin2); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->nPgTombstone); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->nEntryTombstone); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->nEntry); + } } } @@ -199617,8 +236036,8 @@ static int fts5SegmentSize(Fts5StructureSegment *pSeg){ } /* -** Return a copy of index structure pStruct. Except, promote as many -** segments as possible to level iPromote. If an OOM occurs, NULL is +** Return a copy of index structure pStruct. Except, promote as many +** segments as possible to level iPromote. If an OOM occurs, NULL is ** returned. */ static void fts5StructurePromoteTo( @@ -199658,8 +236077,8 @@ static void fts5StructurePromoteTo( ** ** b) If the segment just written is larger than the newest segment on ** the next populated level, then that segment, and any other adjacent -** segments that are also smaller than the one just written, are -** promoted. +** segments that are also smaller than the one just written, are +** promoted. ** ** If one or more segments are promoted, the structure object is updated ** to reflect this. @@ -199693,7 +236112,7 @@ static void fts5StructurePromote( if( sz>szMax ) szMax = sz; } if( szMax>=szSeg ){ - /* Condition (a) is true. Promote the newest segment on level + /* Condition (a) is true. Promote the newest segment on level ** iLvl to level iTst. */ iPromote = iTst; szPromote = szMax; @@ -199712,7 +236131,7 @@ static void fts5StructurePromote( /* -** Advance the iterator passed as the only argument. If the end of the +** Advance the iterator passed as the only argument. If the end of the ** doclist-index page is reached, return non-zero. */ static int fts5DlidxLvlNext(Fts5DlidxLvl *pLvl){ @@ -199727,7 +236146,7 @@ static int fts5DlidxLvlNext(Fts5DlidxLvl *pLvl){ }else{ int iOff; for(iOff=pLvl->iOff; iOffnn; iOff++){ - if( pData->p[iOff] ) break; + if( pData->p[iOff] ) break; } if( iOffnn ){ @@ -199757,7 +236176,7 @@ static int fts5DlidxIterNextR(Fts5Index *p, Fts5DlidxIter *pIter, int iLvl){ if( pLvl[1].bEof==0 ){ fts5DataRelease(pLvl->pData); memset(pLvl, 0, sizeof(Fts5DlidxLvl)); - pLvl->pData = fts5DataRead(p, + pLvl->pData = fts5DataRead(p, FTS5_DLIDX_ROWID(pIter->iSegid, iLvl, pLvl[1].iLeafPgno) ); if( pLvl->pData ) fts5DlidxLvlNext(pLvl); @@ -199777,7 +236196,7 @@ static int fts5DlidxIterNext(Fts5Index *p, Fts5DlidxIter *pIter){ ** points to the first rowid in the doclist-index. ** ** pData: -** pointer to doclist-index record, +** pointer to doclist-index record, ** ** When this function is called pIter->iLeafPgno is the page number the ** doclist is associated with (the one featuring the term). @@ -199808,7 +236227,7 @@ static void fts5DlidxIterLast(Fts5Index *p, Fts5DlidxIter *pIter){ Fts5DlidxLvl *pChild = &pLvl[-1]; fts5DataRelease(pChild->pData); memset(pChild, 0, sizeof(Fts5DlidxLvl)); - pChild->pData = fts5DataRead(p, + pChild->pData = fts5DataRead(p, FTS5_DLIDX_ROWID(pIter->iSegid, i-1, pLvl->iLeafPgno) ); } @@ -199826,42 +236245,25 @@ static int fts5DlidxLvlPrev(Fts5DlidxLvl *pLvl){ pLvl->bEof = 1; }else{ u8 *a = pLvl->pData->p; - i64 iVal; - int iLimit; - int ii; - int nZero = 0; - /* Currently iOff points to the first byte of a varint. This block - ** decrements iOff until it points to the first byte of the previous - ** varint. Taking care not to read any memory locations that occur - ** before the buffer in memory. */ - iLimit = (iOff>9 ? iOff-9 : 0); - for(iOff--; iOff>iLimit; iOff--){ - if( (a[iOff-1] & 0x80)==0 ) break; - } + pLvl->iOff = 0; + fts5DlidxLvlNext(pLvl); + while( 1 ){ + int nZero = 0; + int ii = pLvl->iOff; + u64 delta = 0; - fts5GetVarint(&a[iOff], (u64*)&iVal); - pLvl->iRowid -= iVal; - pLvl->iLeafPgno--; - - /* Skip backwards past any 0x00 varints. */ - for(ii=iOff-1; ii>=pLvl->iFirstOff && a[ii]==0x00; ii--){ - nZero++; - } - if( ii>=pLvl->iFirstOff && (a[ii] & 0x80) ){ - /* The byte immediately before the last 0x00 byte has the 0x80 bit - ** set. So the last 0x00 is only a varint 0 if there are 8 more 0x80 - ** bytes before a[ii]. */ - int bZero = 0; /* True if last 0x00 counts */ - if( (ii-8)>=pLvl->iFirstOff ){ - int j; - for(j=1; j<=8 && (a[ii-j] & 0x80); j++); - bZero = (j>8); + while( a[ii]==0 ){ + nZero++; + ii++; } - if( bZero==0 ) nZero--; + ii += sqlite3Fts5GetVarint(&a[ii], &delta); + + if( ii>=iOff ) break; + pLvl->iLeafPgno += nZero+1; + pLvl->iRowid += delta; + pLvl->iOff = ii; } - pLvl->iLeafPgno -= nZero; - pLvl->iOff = iOff - nZero; } return pLvl->bEof; @@ -199877,7 +236279,7 @@ static int fts5DlidxIterPrevR(Fts5Index *p, Fts5DlidxIter *pIter, int iLvl){ if( pLvl[1].bEof==0 ){ fts5DataRelease(pLvl->pData); memset(pLvl, 0, sizeof(Fts5DlidxLvl)); - pLvl->pData = fts5DataRead(p, + pLvl->pData = fts5DataRead(p, FTS5_DLIDX_ROWID(pIter->iSegid, iLvl, pLvl[1].iLeafPgno) ); if( pLvl->pData ){ @@ -199918,10 +236320,10 @@ static Fts5DlidxIter *fts5DlidxIterInit( int bDone = 0; for(i=0; p->rc==SQLITE_OK && bDone==0; i++){ - int nByte = sizeof(Fts5DlidxIter) + i * sizeof(Fts5DlidxLvl); + sqlite3_int64 nByte = sizeof(Fts5DlidxIter) + i * sizeof(Fts5DlidxLvl); Fts5DlidxIter *pNew; - pNew = (Fts5DlidxIter*)sqlite3_realloc(pIter, nByte); + pNew = (Fts5DlidxIter*)sqlite3_realloc64(pIter, nByte); if( pNew==0 ){ p->rc = SQLITE_NOMEM; }else{ @@ -199976,7 +236378,7 @@ static void fts5SegIterNextPage( pIter->pLeaf = pIter->pNextLeaf; pIter->pNextLeaf = 0; }else if( pIter->iLeafPgno<=pSeg->pgnoLast ){ - pIter->pLeaf = fts5LeafRead(p, + pIter->pLeaf = fts5LeafRead(p, FTS5_SEGMENT_ROWID(pSeg->iSegid, pIter->iLeafPgno) ); }else{ @@ -200020,7 +236422,7 @@ static int fts5GetPoslistSize(const u8 *p, int *pnSz, int *pbDel){ ** Fts5SegIter.nPos ** Fts5SegIter.bDel ** -** Leave Fts5SegIter.iLeafOffset pointing to the first byte of the +** Leave Fts5SegIter.iLeafOffset pointing to the first byte of the ** position list content (if any). */ static void fts5SegIterLoadNPos(Fts5Index *p, Fts5SegIter *pIter){ @@ -200054,10 +236456,10 @@ static void fts5SegIterLoadNPos(Fts5Index *p, Fts5SegIter *pIter){ static void fts5SegIterLoadRowid(Fts5Index *p, Fts5SegIter *pIter){ u8 *a = pIter->pLeaf->p; /* Buffer to read data from */ - int iOff = pIter->iLeafOffset; + i64 iOff = pIter->iLeafOffset; ASSERT_SZLEAF_OK(pIter->pLeaf); - if( iOff>=pIter->pLeaf->szLeaf ){ + while( iOff>=pIter->pLeaf->szLeaf ){ fts5SegIterNextPage(p, pIter); if( pIter->pLeaf==0 ){ if( p->rc==SQLITE_OK ) p->rc = FTS5_CORRUPT; @@ -200071,7 +236473,7 @@ static void fts5SegIterLoadRowid(Fts5Index *p, Fts5SegIter *pIter){ } /* -** Fts5SegIter.iLeafOffset currently points to the first byte of the +** Fts5SegIter.iLeafOffset currently points to the first byte of the ** "nSuffix" field of a term. Function parameter nKeep contains the value ** of the "nPrefix" field (if there was one - it is passed 0 if this is ** the first term in the segment). @@ -200082,21 +236484,22 @@ static void fts5SegIterLoadRowid(Fts5Index *p, Fts5SegIter *pIter){ ** Fts5SegIter.rowid ** ** accordingly and leaves (Fts5SegIter.iLeafOffset) set to the content of -** the first position list. The position list belonging to document +** the first position list. The position list belonging to document ** (Fts5SegIter.iRowid). */ static void fts5SegIterLoadTerm(Fts5Index *p, Fts5SegIter *pIter, int nKeep){ u8 *a = pIter->pLeaf->p; /* Buffer to read data from */ - int iOff = pIter->iLeafOffset; /* Offset to read at */ + i64 iOff = pIter->iLeafOffset; /* Offset to read at */ int nNew; /* Bytes of new data */ iOff += fts5GetVarint32(&a[iOff], nNew); - if( iOff+nNew>pIter->pLeaf->nn ){ + if( iOff+nNew>pIter->pLeaf->szLeaf || nKeep>pIter->term.n || nNew==0 ){ p->rc = FTS5_CORRUPT; return; } pIter->term.n = nKeep; fts5BufferAppendBlob(&p->rc, &pIter->term, nNew, &a[iOff]); + assert( pIter->term.n<=pIter->term.nSpace ); iOff += nNew; pIter->iTermLeafOffset = iOff; pIter->iTermLeafPgno = pIter->iLeafPgno; @@ -200127,12 +236530,29 @@ static void fts5SegIterSetNext(Fts5Index *p, Fts5SegIter *pIter){ } } +/* +** Allocate a tombstone hash page array (pIter->apTombstone) for the +** iterator passed as the second argument. If an OOM error occurs, leave +** an error in the Fts5Index object. +*/ +static void fts5SegIterAllocTombstone(Fts5Index *p, Fts5SegIter *pIter){ + const int nTomb = pIter->pSeg->nPgTombstone; + if( nTomb>0 ){ + Fts5Data **apTomb = 0; + apTomb = (Fts5Data**)sqlite3Fts5MallocZero(&p->rc, sizeof(Fts5Data)*nTomb); + if( apTomb ){ + pIter->apTombstone = apTomb; + pIter->nTombstone = nTomb; + } + } +} + /* ** Initialize the iterator object pIter to iterate through the entries in -** segment pSeg. The iterator is left pointing to the first entry when +** segment pSeg. The iterator is left pointing to the first entry when ** this function returns. ** -** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If ** an error has already occurred when this function is called, it is a no-op. */ static void fts5SegIterInit( @@ -200155,16 +236575,20 @@ static void fts5SegIterInit( fts5SegIterSetNext(p, pIter); pIter->pSeg = pSeg; pIter->iLeafPgno = pSeg->pgnoFirst-1; - fts5SegIterNextPage(p, pIter); + do { + fts5SegIterNextPage(p, pIter); + }while( p->rc==SQLITE_OK && pIter->pLeaf && pIter->pLeaf->nn==4 ); } - if( p->rc==SQLITE_OK ){ + if( p->rc==SQLITE_OK && pIter->pLeaf ){ pIter->iLeafOffset = 4; + assert( pIter->pLeaf!=0 ); assert_nc( pIter->pLeaf->nn>4 ); - assert( fts5LeafFirstTermOff(pIter->pLeaf)==4 ); + assert_nc( fts5LeafFirstTermOff(pIter->pLeaf)==4 ); pIter->iPgidxOff = pIter->pLeaf->szLeaf+1; fts5SegIterLoadTerm(p, pIter, 0); fts5SegIterLoadNPos(p, pIter); + fts5SegIterAllocTombstone(p, pIter); } } @@ -200177,8 +236601,8 @@ static void fts5SegIterInit( ** the position-list size field for the first relevant rowid on the page. ** Fts5SegIter.rowid is set, but nPos and bDel are not. ** -** This function advances the iterator so that it points to the last -** relevant rowid on the page and, if necessary, initializes the +** This function advances the iterator so that it points to the last +** relevant rowid on the page and, if necessary, initializes the ** aRowidOffset[] and iRowidOffset variables. At this point the iterator ** is in its regular state - Fts5SegIter.iLeafOffset points to the first ** byte of the position list content associated with said rowid. @@ -200196,7 +236620,7 @@ static void fts5SegIterReverseInitPage(Fts5Index *p, Fts5SegIter *pIter){ ASSERT_SZLEAF_OK(pIter->pLeaf); while( 1 ){ - i64 iDelta = 0; + u64 iDelta = 0; if( eDetail==FTS5_DETAIL_NONE ){ /* todo */ @@ -200211,13 +236635,13 @@ static void fts5SegIterReverseInitPage(Fts5Index *p, Fts5SegIter *pIter){ i += nPos; } if( i>=n ) break; - i += fts5GetVarint(&a[i], (u64*)&iDelta); + i += fts5GetVarint(&a[i], &iDelta); pIter->iRowid += iDelta; /* If necessary, grow the pIter->aRowidOffset[] array. */ if( iRowidOffset>=pIter->nRowidOffset ){ int nNew = pIter->nRowidOffset + 8; - int *aNew = (int*)sqlite3_realloc(pIter->aRowidOffset, nNew*sizeof(int)); + int *aNew = (int*)sqlite3_realloc64(pIter->aRowidOffset,nNew*sizeof(int)); if( aNew==0 ){ p->rc = SQLITE_NOMEM; break; @@ -200262,8 +236686,12 @@ static void fts5SegIterReverseNewPage(Fts5Index *p, Fts5SegIter *pIter){ int iRowidOff; iRowidOff = fts5LeafFirstRowidOff(pNew); if( iRowidOff ){ - pIter->pLeaf = pNew; - pIter->iLeafOffset = iRowidOff; + if( iRowidOff>=pNew->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + pIter->pLeaf = pNew; + pIter->iLeafOffset = iRowidOff; + } } } @@ -200310,7 +236738,7 @@ static void fts5SegIterNext_Reverse( if( pIter->iRowidOffset>0 ){ u8 *a = pIter->pLeaf->p; int iOff; - i64 iDelta; + u64 iDelta; pIter->iRowidOffset--; pIter->iLeafOffset = pIter->aRowidOffset[pIter->iRowidOffset]; @@ -200319,7 +236747,7 @@ static void fts5SegIterNext_Reverse( if( p->pConfig->eDetail!=FTS5_DETAIL_NONE ){ iOff += pIter->nPos; } - fts5GetVarint(&a[iOff], (u64*)&iDelta); + fts5GetVarint(&a[iOff], &iDelta); pIter->iRowid -= iDelta; }else{ fts5SegIterReverseNewPage(p, pIter); @@ -200347,7 +236775,7 @@ static void fts5SegIterNext_None( iOff = pIter->iLeafOffset; /* Next entry is on the next page */ - if( pIter->pSeg && iOff>=pIter->pLeaf->szLeaf ){ + while( pIter->pSeg && iOff>=pIter->pLeaf->szLeaf ){ fts5SegIterNextPage(p, pIter); if( p->rc || pIter->pLeaf==0 ) return; pIter->iRowid = 0; @@ -200398,10 +236826,10 @@ static void fts5SegIterNext_None( /* -** Advance iterator pIter to the next entry. +** Advance iterator pIter to the next entry. ** -** If an error occurs, Fts5Index.rc is set to an appropriate error code. It -** is not considered an error if the iterator reaches EOF. If an error has +** If an error occurs, Fts5Index.rc is set to an appropriate error code. It +** is not considered an error if the iterator reaches EOF. If an error has ** already occurred when this function is called, it is a no-op. */ static void fts5SegIterNext( @@ -200512,14 +236940,9 @@ static void fts5SegIterNext( }else{ /* The following could be done by calling fts5SegIterLoadNPos(). But ** this block is particularly performance critical, so equivalent - ** code is inlined. - ** - ** Later: Switched back to fts5SegIterLoadNPos() because it supports - ** detail=none mode. Not ideal. - */ + ** code is inlined. */ int nSz; - assert( p->rc==SQLITE_OK ); - assert( pIter->iLeafOffset<=pIter->pLeaf->nn ); + assert_nc( pIter->iLeafOffset<=pIter->pLeaf->nn ); fts5FastGetVarint32(pIter->pLeaf->p, pIter->iLeafOffset, nSz); pIter->bDel = (nSz & 0x0001); pIter->nPos = nSz>>1; @@ -200545,10 +236968,10 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ Fts5Data *pLast = 0; int pgnoLast = 0; - if( pDlidx ){ + if( pDlidx && p->pConfig->iVersion==FTS5_CURRENT_VERSION ){ int iSegid = pIter->pSeg->iSegid; pgnoLast = fts5DlidxIterPgno(pDlidx); - pLast = fts5DataRead(p, FTS5_SEGMENT_ROWID(iSegid, pgnoLast)); + pLast = fts5LeafRead(p, FTS5_SEGMENT_ROWID(iSegid, pgnoLast)); }else{ Fts5Data *pLeaf = pIter->pLeaf; /* Current leaf data */ @@ -200575,7 +236998,7 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ ** forward to find the page containing the last rowid. */ for(pgno=pIter->iLeafPgno+1; !p->rc && pgno<=pSeg->pgnoLast; pgno++){ i64 iAbs = FTS5_SEGMENT_ROWID(pSeg->iSegid, pgno); - Fts5Data *pNew = fts5DataRead(p, iAbs); + Fts5Data *pNew = fts5LeafRead(p, iAbs); if( pNew ){ int iRowid, bTermless; iRowid = fts5LeafFirstRowidOff(pNew); @@ -200592,7 +237015,7 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ } /* If pLast is NULL at this point, then the last rowid for this doclist - ** lies on the page currently indicated by the iterator. In this case + ** lies on the page currently indicated by the iterator. In this case ** pIter->iLeafOffset is already set to point to the position-list size ** field associated with the first relevant rowid on the page. ** @@ -200606,6 +237029,10 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ pIter->pLeaf = pLast; pIter->iLeafPgno = pgnoLast; iOff = fts5LeafFirstRowidOff(pLast); + if( iOff>pLast->szLeaf ){ + p->rc = FTS5_CORRUPT; + return; + } iOff += fts5GetVarint(&pLast->p[iOff], (u64*)&pIter->iRowid); pIter->iLeafOffset = iOff; @@ -200614,7 +237041,6 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ }else{ pIter->iEndofDoclist = fts5LeafFirstTermOff(pLast); } - } fts5SegIterReverseInitPage(p, pIter); @@ -200622,8 +237048,8 @@ static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ /* ** Iterator pIter currently points to the first rowid of a doclist. -** There is a doclist-index associated with the final term on the current -** page. If the current term is the last term on the page, load the +** There is a doclist-index associated with the final term on the current +** page. If the current term is the last term on the page, load the ** doclist-index from disk and initialize an iterator at (pIter->pDlidx). */ static void fts5SegIterLoadDlidx(Fts5Index *p, Fts5SegIter *pIter){ @@ -200637,8 +237063,8 @@ static void fts5SegIterLoadDlidx(Fts5Index *p, Fts5SegIter *pIter){ /* Check if the current doclist ends on this page. If it does, return ** early without loading the doclist-index (as it belongs to a different ** term. */ - if( pIter->iTermLeafPgno==pIter->iLeafPgno - && pIter->iEndofDoclistszLeaf + if( pIter->iTermLeafPgno==pIter->iLeafPgno + && pIter->iEndofDoclistszLeaf ){ return; } @@ -200666,21 +237092,20 @@ static void fts5LeafSeek( Fts5SegIter *pIter, /* Iterator to seek */ const u8 *pTerm, int nTerm /* Term to search for */ ){ - int iOff; + u32 iOff; const u8 *a = pIter->pLeaf->p; - int szLeaf = pIter->pLeaf->szLeaf; - int n = pIter->pLeaf->nn; + u32 n = (u32)pIter->pLeaf->nn; - int nMatch = 0; - int nKeep = 0; - int nNew = 0; - int iTermOff; - int iPgidx; /* Current offset in pgidx */ + u32 nMatch = 0; + u32 nKeep = 0; + u32 nNew = 0; + u32 iTermOff; + u32 iPgidx; /* Current offset in pgidx */ int bEndOfPage = 0; assert( p->rc==SQLITE_OK ); - iPgidx = szLeaf; + iPgidx = (u32)pIter->pLeaf->szLeaf; iPgidx += fts5GetVarint32(&a[iPgidx], iTermOff); iOff = iTermOff; if( iOff>n ){ @@ -200698,15 +237123,15 @@ static void fts5LeafSeek( assert( nKeep>=nMatch ); if( nKeep==nMatch ){ - int nCmp; - int i; - nCmp = MIN(nNew, nTerm-nMatch); + u32 nCmp; + u32 i; + nCmp = (u32)MIN(nNew, nTerm-nMatch); for(i=0; ipLeaf==0 ) return; a = pIter->pLeaf->p; if( fts5LeafIsTermless(pIter->pLeaf)==0 ){ - iPgidx = pIter->pLeaf->szLeaf; + iPgidx = (u32)pIter->pLeaf->szLeaf; iPgidx += fts5GetVarint32(&pIter->pLeaf->p[iPgidx], iOff); - if( iOff<4 || iOff>=pIter->pLeaf->szLeaf ){ + if( iOff<4 || (i64)iOff>=pIter->pLeaf->szLeaf ){ p->rc = FTS5_CORRUPT; + return; }else{ nKeep = 0; iTermOff = iOff; - n = pIter->pLeaf->nn; + n = (u32)pIter->pLeaf->nn; iOff += fts5GetVarint32(&a[iOff], nNew); break; } @@ -200762,7 +237188,10 @@ static void fts5LeafSeek( } search_success: - + if( (i64)iOff+nNew>n || nNew<1 ){ + p->rc = FTS5_CORRUPT; + return; + } pIter->iLeafOffset = iOff + nNew; pIter->iTermLeafOffset = pIter->iLeafOffset; pIter->iTermLeafPgno = pIter->iLeafPgno; @@ -200799,7 +237228,7 @@ static sqlite3_stmt *fts5IdxSelectStmt(Fts5Index *p){ ** Initialize the object pIter to point to term pTerm/nTerm within segment ** pSeg. If there is no such term in the index, the iterator is set to EOF. ** -** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If ** an error has already occurred when this function is called, it is a no-op. */ static void fts5SegIterSeekInit( @@ -200861,6 +237290,7 @@ static void fts5SegIterSeekInit( } fts5SegIterSetNext(p, pIter); + fts5SegIterAllocTombstone(p, pIter); /* Either: ** @@ -200870,7 +237300,7 @@ static void fts5SegIterSeekInit( ** 4) the FTS5INDEX_QUERY_SCAN flag was set and the iterator points ** to an entry with a term greater than or equal to (pTerm/nTerm). */ - assert( p->rc!=SQLITE_OK /* 1 */ + assert_nc( p->rc!=SQLITE_OK /* 1 */ || pIter->pLeaf==0 /* 2 */ || fts5BufferCompareBlob(&pIter->term, pTerm, nTerm)==0 /* 3 */ || (bGe && fts5BufferCompareBlob(&pIter->term, pTerm, nTerm)>0) /* 4 */ @@ -200879,10 +237309,10 @@ static void fts5SegIterSeekInit( /* ** Initialize the object pIter to point to term pTerm/nTerm within the -** in-memory hash table. If there is no such term in the hash-table, the +** in-memory hash table. If there is no such term in the hash-table, the ** iterator is set to EOF. ** -** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If ** an error has already occurred when this function is called, it is a no-op. */ static void fts5SegIterHashInit( @@ -200891,31 +237321,40 @@ static void fts5SegIterHashInit( int flags, /* Mask of FTS5INDEX_XXX flags */ Fts5SegIter *pIter /* Object to populate */ ){ - const u8 *pList = 0; int nList = 0; const u8 *z = 0; int n = 0; + Fts5Data *pLeaf = 0; assert( p->pHash ); assert( p->rc==SQLITE_OK ); if( pTerm==0 || (flags & FTS5INDEX_QUERY_SCAN) ){ + const u8 *pList = 0; + p->rc = sqlite3Fts5HashScanInit(p->pHash, (const char*)pTerm, nTerm); sqlite3Fts5HashScanEntry(p->pHash, (const char**)&z, &pList, &nList); n = (z ? (int)strlen((const char*)z) : 0); + if( pList ){ + pLeaf = fts5IdxMalloc(p, sizeof(Fts5Data)); + if( pLeaf ){ + pLeaf->p = (u8*)pList; + } + } }else{ - pIter->flags |= FTS5_SEGITER_ONETERM; - sqlite3Fts5HashQuery(p->pHash, (const char*)pTerm, nTerm, &pList, &nList); + p->rc = sqlite3Fts5HashQuery(p->pHash, sizeof(Fts5Data), + (const char*)pTerm, nTerm, (void**)&pLeaf, &nList + ); + if( pLeaf ){ + pLeaf->p = (u8*)&pLeaf[1]; + } z = pTerm; n = nTerm; + pIter->flags |= FTS5_SEGITER_ONETERM; } - if( pList ){ - Fts5Data *pLeaf; + if( pLeaf ){ sqlite3Fts5BufferSet(&p->rc, &pIter->term, n, z); - pLeaf = fts5IdxMalloc(p, sizeof(Fts5Data)); - if( pLeaf==0 ) return; - pLeaf->p = (u8*)pList; pLeaf->nn = pLeaf->szLeaf = nList; pIter->pLeaf = pLeaf; pIter->iLeafOffset = fts5GetVarint(pLeaf->p, (u64*)&pIter->iRowid); @@ -200932,6 +237371,20 @@ static void fts5SegIterHashInit( fts5SegIterSetNext(p, pIter); } +/* +** Array ap[] contains n elements. Release each of these elements using +** fts5DataRelease(). Then free the array itself using sqlite3_free(). +*/ +static void fts5IndexFreeArray(Fts5Data **ap, int n){ + if( ap ){ + int ii; + for(ii=0; iiterm); fts5DataRelease(pIter->pLeaf); fts5DataRelease(pIter->pNextLeaf); + fts5IndexFreeArray(pIter->apTombstone, pIter->nTombstone); fts5DlidxIterFree(pIter->pDlidx); sqlite3_free(pIter->aRowidOffset); memset(pIter, 0, sizeof(Fts5SegIter)); @@ -200953,7 +237407,7 @@ static void fts5SegIterClear(Fts5SegIter *pIter){ ** two iterators. */ static void fts5AssertComparisonResult( - Fts5Iter *pIter, + Fts5Iter *pIter, Fts5SegIter *p1, Fts5SegIter *p2, Fts5CResult *pRes @@ -200968,7 +237422,7 @@ static void fts5AssertComparisonResult( assert( pRes->iFirst==i1 ); }else{ int nMin = MIN(p1->term.n, p2->term.n); - int res = memcmp(p1->term.p, p2->term.p, nMin); + int res = fts5Memcmp(p1->term.p, p2->term.p, nMin); if( res==0 ) res = p1->term.n - p2->term.n; if( res==0 ){ @@ -200990,7 +237444,7 @@ static void fts5AssertComparisonResult( /* ** This function is a no-op unless SQLITE_DEBUG is defined when this module -** is compiled. In that case, this function is essentially an assert() +** is compiled. In that case, this function is essentially an assert() ** statement used to verify that the contents of the pIter->aFirst[] array ** are correct. */ @@ -201004,9 +237458,9 @@ static void fts5AssertMultiIterSetup(Fts5Index *p, Fts5Iter *pIter){ /* Check that pIter->iSwitchRowid is set correctly. */ for(i=0; inSeg; i++){ Fts5SegIter *p1 = &pIter->aSeg[i]; - assert( p1==pFirst - || p1->pLeaf==0 - || fts5BufferCompare(&pFirst->term, &p1->term) + assert( p1==pFirst + || p1->pLeaf==0 + || fts5BufferCompare(&pFirst->term, &p1->term) || p1->iRowid==pIter->iSwitchRowid || (p1->iRowidiSwitchRowid)==pIter->bRev ); @@ -201036,7 +237490,7 @@ static void fts5AssertMultiIterSetup(Fts5Index *p, Fts5Iter *pIter){ ** ** If the returned value is non-zero, then it is the index of an entry ** in the pIter->aSeg[] array that is (a) not at EOF, and (b) pointing -** to a key that is a duplicate of another, higher priority, +** to a key that is a duplicate of another, higher priority, ** segment-iterator in the pSeg->aSeg[] array. */ static int fts5MultiIterDoCompare(Fts5Iter *pIter, int iOut){ @@ -201068,8 +237522,8 @@ static int fts5MultiIterDoCompare(Fts5Iter *pIter, int iOut){ }else{ int res = fts5BufferCompare(&p1->term, &p2->term); if( res==0 ){ - assert( i2>i1 ); - assert( i2!=0 ); + assert_nc( i2>i1 ); + assert_nc( i2!=0 ); pRes->bTermEq = 1; if( p1->iRowid==p2->iRowid ){ p1->bDel = p2->bDel; @@ -201091,7 +237545,8 @@ static int fts5MultiIterDoCompare(Fts5Iter *pIter, int iOut){ /* ** Move the seg-iter so that it points to the first rowid on page iLeafPgno. -** It is an error if leaf iLeafPgno does not exist or contains no rowids. +** It is an error if leaf iLeafPgno does not exist. Unless the db is +** a 'secure-delete' db, if it contains no rowids then this is also an error. */ static void fts5SegIterGotoPage( Fts5Index *p, /* FTS5 backend object */ @@ -201106,28 +237561,30 @@ static void fts5SegIterGotoPage( fts5DataRelease(pIter->pNextLeaf); pIter->pNextLeaf = 0; pIter->iLeafPgno = iLeafPgno-1; - fts5SegIterNextPage(p, pIter); - assert( p->rc!=SQLITE_OK || pIter->iLeafPgno==iLeafPgno ); - if( p->rc==SQLITE_OK ){ + while( p->rc==SQLITE_OK ){ int iOff; - u8 *a = pIter->pLeaf->p; - int n = pIter->pLeaf->szLeaf; - + fts5SegIterNextPage(p, pIter); + if( pIter->pLeaf==0 ) break; iOff = fts5LeafFirstRowidOff(pIter->pLeaf); - if( iOff<4 || iOff>=n ){ - p->rc = FTS5_CORRUPT; - }else{ - iOff += fts5GetVarint(&a[iOff], (u64*)&pIter->iRowid); - pIter->iLeafOffset = iOff; - fts5SegIterLoadNPos(p, pIter); + if( iOff>0 ){ + u8 *a = pIter->pLeaf->p; + int n = pIter->pLeaf->szLeaf; + if( iOff<4 || iOff>=n ){ + p->rc = FTS5_CORRUPT; + }else{ + iOff += fts5GetVarint(&a[iOff], (u64*)&pIter->iRowid); + pIter->iLeafOffset = iOff; + fts5SegIterLoadNPos(p, pIter); + } + break; } } } } /* -** Advance the iterator passed as the second argument until it is at or +** Advance the iterator passed as the second argument until it is at or ** past rowid iFrom. Regardless of the value of iFrom, the iterator is ** always advanced at least once. */ @@ -201191,7 +237648,6 @@ static void fts5MultiIterFree(Fts5Iter *pIter){ for(i=0; inSeg; i++){ fts5SegIterClear(&pIter->aSeg[i]); } - fts5StructureRelease(pIter->pStruct); fts5BufferFree(&pIter->poslist); sqlite3_free(pIter); } @@ -201224,7 +237680,7 @@ static void fts5MultiIterAdvanced( ** If non-zero is returned, the caller should call fts5MultiIterAdvanced() ** on the iterator instead. That function does the same as this one, except ** that it deals with more complicated cases as well. -*/ +*/ static int fts5MultiIterAdvanceRowid( Fts5Iter *pIter, /* Iterator to update aFirst[] array for */ int iChanged, /* Index of sub-iterator just advanced */ @@ -201275,14 +237731,92 @@ static void fts5MultiIterSetEof(Fts5Iter *pIter){ } /* -** Move the iterator to the next entry. +** The argument to this macro must be an Fts5Data structure containing a +** tombstone hash page. This macro returns the key-size of the hash-page. +*/ +#define TOMBSTONE_KEYSIZE(pPg) (pPg->p[0]==4 ? 4 : 8) + +#define TOMBSTONE_NSLOT(pPg) \ + ((pPg->nn > 16) ? ((pPg->nn-8) / TOMBSTONE_KEYSIZE(pPg)) : 1) + +/* +** Query a single tombstone hash table for rowid iRowid. Return true if +** it is found or false otherwise. The tombstone hash table is one of +** nHashTable tables. +*/ +static int fts5IndexTombstoneQuery( + Fts5Data *pHash, /* Hash table page to query */ + int nHashTable, /* Number of pages attached to segment */ + u64 iRowid /* Rowid to query hash for */ +){ + const int szKey = TOMBSTONE_KEYSIZE(pHash); + const int nSlot = TOMBSTONE_NSLOT(pHash); + int iSlot = (iRowid / nHashTable) % nSlot; + int nCollide = nSlot; + + if( iRowid==0 ){ + return pHash->p[1]; + }else if( szKey==4 ){ + u32 *aSlot = (u32*)&pHash->p[8]; + while( aSlot[iSlot] ){ + if( fts5GetU32((u8*)&aSlot[iSlot])==iRowid ) return 1; + if( nCollide--==0 ) break; + iSlot = (iSlot+1)%nSlot; + } + }else{ + u64 *aSlot = (u64*)&pHash->p[8]; + while( aSlot[iSlot] ){ + if( fts5GetU64((u8*)&aSlot[iSlot])==iRowid ) return 1; + if( nCollide--==0 ) break; + iSlot = (iSlot+1)%nSlot; + } + } + + return 0; +} + +/* +** Return true if the iterator passed as the only argument points +** to an segment entry for which there is a tombstone. Return false +** if there is no tombstone or if the iterator is already at EOF. +*/ +static int fts5MultiIterIsDeleted(Fts5Iter *pIter){ + int iFirst = pIter->aFirst[1].iFirst; + Fts5SegIter *pSeg = &pIter->aSeg[iFirst]; + + if( pSeg->pLeaf && pSeg->nTombstone ){ + /* Figure out which page the rowid might be present on. */ + int iPg = ((u64)pSeg->iRowid) % pSeg->nTombstone; + assert( iPg>=0 ); + + /* If tombstone hash page iPg has not yet been loaded from the + ** database, load it now. */ + if( pSeg->apTombstone[iPg]==0 ){ + pSeg->apTombstone[iPg] = fts5DataRead(pIter->pIndex, + FTS5_TOMBSTONE_ROWID(pSeg->pSeg->iSegid, iPg) + ); + if( pSeg->apTombstone[iPg]==0 ) return 0; + } + + return fts5IndexTombstoneQuery( + pSeg->apTombstone[iPg], + pSeg->nTombstone, + pSeg->iRowid + ); + } + + return 0; +} + +/* +** Move the iterator to the next entry. ** -** If an error occurs, an error code is left in Fts5Index.rc. It is not -** considered an error if the iterator reaches EOF, or if it is already at +** If an error occurs, an error code is left in Fts5Index.rc. It is not +** considered an error if the iterator reaches EOF, or if it is already at ** EOF when this function is called. */ static void fts5MultiIterNext( - Fts5Index *p, + Fts5Index *p, Fts5Iter *pIter, int bFrom, /* True if argument iFrom is valid */ i64 iFrom /* Advance at least as far as this */ @@ -201300,7 +237834,7 @@ static void fts5MultiIterNext( pSeg->xNext(p, pSeg, &bNewTerm); } - if( pSeg->pLeaf==0 || bNewTerm + if( pSeg->pLeaf==0 || bNewTerm || fts5MultiIterAdvanceRowid(pIter, iFirst, &pSeg) ){ fts5MultiIterAdvanced(p, pIter, iFirst, 1); @@ -201311,7 +237845,9 @@ static void fts5MultiIterNext( fts5AssertMultiIterSetup(p, pIter); assert( pSeg==&pIter->aSeg[pIter->aFirst[1].iFirst] && pSeg->pLeaf ); - if( pIter->bSkipEmpty==0 || pSeg->nPos ){ + if( (pIter->bSkipEmpty==0 || pSeg->nPos) + && 0==fts5MultiIterIsDeleted(pIter) + ){ pIter->xSetOutputs(pIter, pSeg); return; } @@ -201320,7 +237856,7 @@ static void fts5MultiIterNext( } static void fts5MultiIterNext2( - Fts5Index *p, + Fts5Index *p, Fts5Iter *pIter, int *pbNewTerm /* OUT: True if *might* be new term */ ){ @@ -201334,7 +237870,7 @@ static void fts5MultiIterNext2( assert( p->rc==SQLITE_OK ); pSeg->xNext(p, pSeg, &bNewTerm); - if( pSeg->pLeaf==0 || bNewTerm + if( pSeg->pLeaf==0 || bNewTerm || fts5MultiIterAdvanceRowid(pIter, iFirst, &pSeg) ){ fts5MultiIterAdvanced(p, pIter, iFirst, 1); @@ -201343,7 +237879,9 @@ static void fts5MultiIterNext2( } fts5AssertMultiIterSetup(p, pIter); - }while( fts5MultiIterIsEmpty(p, pIter) ); + }while( (fts5MultiIterIsEmpty(p, pIter) || fts5MultiIterIsDeleted(pIter)) + && (p->rc==SQLITE_OK) + ); } } @@ -201359,7 +237897,7 @@ static Fts5Iter *fts5MultiIterAlloc( int nSlot; /* Power of two >= nSeg */ for(nSlot=2; nSlotaSeg[] */ sizeof(Fts5CResult) * nSlot /* pNew->aFirst[] */ @@ -201374,8 +237912,8 @@ static Fts5Iter *fts5MultiIterAlloc( } static void fts5PoslistCallback( - Fts5Index *pUnused, - void *pContext, + Fts5Index *pUnused, + void *pContext, const u8 *pChunk, int nChunk ){ UNUSED_PARAM(pUnused); @@ -201412,8 +237950,8 @@ static int fts5IndexColsetTest(Fts5Colset *pColset, int iCol){ } static void fts5PoslistOffsetsCallback( - Fts5Index *pUnused, - void *pContext, + Fts5Index *pUnused, + void *pContext, const u8 *pChunk, int nChunk ){ PoslistOffsetsCtx *pCtx = (PoslistOffsetsCtx*)pContext; @@ -201436,7 +237974,7 @@ static void fts5PoslistOffsetsCallback( static void fts5PoslistFilterCallback( Fts5Index *pUnused, - void *pContext, + void *pContext, const u8 *pChunk, int nChunk ){ PoslistCallbackCtx *pCtx = (PoslistCallbackCtx*)pContext; @@ -201499,7 +238037,7 @@ static void fts5ChunkIterate( int pgno = pSeg->iLeafPgno; int pgnoSave = 0; - /* This function does notmwork with detail=none databases. */ + /* This function does not work with detail=none databases. */ assert( p->pConfig->eDetail!=FTS5_DETAIL_NONE ); if( (pSeg->flags & FTS5_SEGITER_REVERSE)==0 ){ @@ -201512,6 +238050,9 @@ static void fts5ChunkIterate( fts5DataRelease(pData); if( nRem<=0 ){ break; + }else if( pSeg->pSeg==0 ){ + p->rc = FTS5_CORRUPT; + return; }else{ pgno++; pData = fts5LeafRead(p, FTS5_SEGMENT_ROWID(pSeg->pSeg->iSegid, pgno)); @@ -201539,7 +238080,12 @@ static void fts5SegiterPoslist( Fts5Colset *pColset, Fts5Buffer *pBuf ){ - if( 0==fts5BufferGrow(&p->rc, pBuf, pSeg->nPos) ){ + assert( pBuf!=0 ); + assert( pSeg!=0 ); + if( 0==fts5BufferGrow(&p->rc, pBuf, pSeg->nPos+FTS5_DATA_ZERO_PADDING) ){ + assert( pBuf->p!=0 ); + assert( pBuf->nSpace >= pBuf->n+pSeg->nPos+FTS5_DATA_ZERO_PADDING ); + memset(&pBuf->p[pBuf->n+pSeg->nPos], 0, FTS5_DATA_ZERO_PADDING); if( pColset==0 ){ fts5ChunkIterate(p, pSeg, (void*)pBuf, fts5PoslistCallback); }else{ @@ -201562,66 +238108,72 @@ static void fts5SegiterPoslist( } /* -** IN/OUT parameter (*pa) points to a position list n bytes in size. If -** the position list contains entries for column iCol, then (*pa) is set -** to point to the sub-position-list for that column and the number of -** bytes in it returned. Or, if the argument position list does not -** contain any entries for column iCol, return 0. +** Parameter pPos points to a buffer containing a position list, size nPos. +** This function filters it according to pColset (which must be non-NULL) +** and sets pIter->base.pData/nData to point to the new position list. +** If memory is required for the new position list, use buffer pIter->poslist. +** Or, if the new position list is a contiguous subset of the input, set +** pIter->base.pData/nData to point directly to it. +** +** This function is a no-op if *pRc is other than SQLITE_OK when it is +** called. If an OOM error is encountered, *pRc is set to SQLITE_NOMEM +** before returning. */ -static int fts5IndexExtractCol( - const u8 **pa, /* IN/OUT: Pointer to poslist */ - int n, /* IN: Size of poslist in bytes */ - int iCol /* Column to extract from poslist */ -){ - int iCurrent = 0; /* Anything before the first 0x01 is col 0 */ - const u8 *p = *pa; - const u8 *pEnd = &p[n]; /* One byte past end of position list */ - - while( iCol>iCurrent ){ - /* Advance pointer p until it points to pEnd or an 0x01 byte that is - ** not part of a varint. Note that it is not possible for a negative - ** or extremely large varint to occur within an uncorrupted position - ** list. So the last byte of each varint may be assumed to have a clear - ** 0x80 bit. */ - while( *p!=0x01 ){ - while( *p++ & 0x80 ); - if( p>=pEnd ) return 0; - } - *pa = p++; - iCurrent = *p++; - if( iCurrent & 0x80 ){ - p--; - p += fts5GetVarint32(p, iCurrent); - } - } - if( iCol!=iCurrent ) return 0; - - /* Advance pointer p until it points to pEnd or an 0x01 byte that is - ** not part of a varint */ - while( pnCol; i++){ - const u8 *pSub = pPos; - int nSub = fts5IndexExtractCol(&pSub, nPos, pColset->aiCol[i]); - if( nSub ){ - fts5BufferAppendBlob(pRc, pBuf, nSub, pSub); + const u8 *p = pPos; + const u8 *aCopy = p; + const u8 *pEnd = &p[nPos]; /* One byte past end of position list */ + int i = 0; + int iCurrent = 0; + + if( pColset->nCol>1 && sqlite3Fts5BufferSize(pRc, &pIter->poslist, nPos) ){ + return; + } + + while( 1 ){ + while( pColset->aiCol[i]nCol ){ + pIter->base.pData = pIter->poslist.p; + pIter->base.nData = pIter->poslist.n; + return; + } + } + + /* Advance pointer p until it points to pEnd or an 0x01 byte that is + ** not part of a varint */ + while( paiCol[i]==iCurrent ){ + if( pColset->nCol==1 ){ + pIter->base.pData = aCopy; + pIter->base.nData = p-aCopy; + return; + } + fts5BufferSafeAppendBlob(&pIter->poslist, aCopy, p-aCopy); + } + if( p>=pEnd ){ + pIter->base.pData = pIter->poslist.p; + pIter->base.nData = pIter->poslist.n; + return; + } + aCopy = p++; + iCurrent = *p++; + if( iCurrent & 0x80 ){ + p--; + p += fts5GetVarint32(p, iCurrent); } } } + } /* @@ -201645,7 +238197,7 @@ static void fts5IterSetOutputs_Nocolset(Fts5Iter *pIter, Fts5SegIter *pSeg){ assert( pIter->pColset==0 ); if( pSeg->iLeafOffset+pSeg->nPos<=pSeg->pLeaf->szLeaf ){ - /* All data is stored on the current page. Populate the output + /* All data is stored on the current page. Populate the output ** variables to point into the body of the page object. */ pIter->base.pData = &pSeg->pLeaf->p[pSeg->iLeafOffset]; }else{ @@ -201681,13 +238233,13 @@ static void fts5IterSetOutputs_Col(Fts5Iter *pIter, Fts5SegIter *pSeg){ } /* -** xSetOutputs callback used when: +** xSetOutputs callback used when: ** ** * detail=col, ** * there is a column filter, and -** * the table contains 100 or fewer columns. +** * the table contains 100 or fewer columns. ** -** The last point is to ensure all column numbers are stored as +** The last point is to ensure all column numbers are stored as ** single-byte varints. */ static void fts5IterSetOutputs_Col100(Fts5Iter *pIter, Fts5SegIter *pSeg){ @@ -201699,7 +238251,7 @@ static void fts5IterSetOutputs_Col100(Fts5Iter *pIter, Fts5SegIter *pSeg){ fts5IterSetOutputs_Col(pIter, pSeg); }else{ u8 *a = (u8*)&pSeg->pLeaf->p[pSeg->iLeafOffset]; - u8 *pEnd = (u8*)&a[pSeg->nPos]; + u8 *pEnd = (u8*)&a[pSeg->nPos]; int iPrev = 0; int *aiCol = pIter->pColset->aiCol; int *aiColEnd = &aiCol[pIter->pColset->nCol]; @@ -201738,19 +238290,12 @@ static void fts5IterSetOutputs_Full(Fts5Iter *pIter, Fts5SegIter *pSeg){ assert( pColset ); if( pSeg->iLeafOffset+pSeg->nPos<=pSeg->pLeaf->szLeaf ){ - /* All data is stored on the current page. Populate the output + /* All data is stored on the current page. Populate the output ** variables to point into the body of the page object. */ const u8 *a = &pSeg->pLeaf->p[pSeg->iLeafOffset]; - if( pColset->nCol==1 ){ - pIter->base.nData = fts5IndexExtractCol(&a, pSeg->nPos,pColset->aiCol[0]); - pIter->base.pData = a; - }else{ - int *pRc = &pIter->pIndex->rc; - fts5BufferZero(&pIter->poslist); - fts5IndexExtractColset(pRc, pColset, a, pSeg->nPos, &pIter->poslist); - pIter->base.pData = pIter->poslist.p; - pIter->base.nData = pIter->poslist.n; - } + int *pRc = &pIter->pIndex->rc; + fts5BufferZero(&pIter->poslist); + fts5IndexExtractColset(pRc, pColset, a, pSeg->nPos, pIter); }else{ /* The data is distributed over two or more pages. Copy it into the ** Fts5Iter.poslist buffer and then set the output pointer to point @@ -201763,6 +238308,7 @@ static void fts5IterSetOutputs_Full(Fts5Iter *pIter, Fts5SegIter *pSeg){ } static void fts5IterSetOutputCb(int *pRc, Fts5Iter *pIter){ + assert( pIter!=0 || (*pRc)!=SQLITE_OK ); if( *pRc==SQLITE_OK ){ Fts5Config *pConfig = pIter->pIndex->pConfig; if( pConfig->eDetail==FTS5_DETAIL_NONE ){ @@ -201802,7 +238348,7 @@ static void fts5IterSetOutputCb(int *pRc, Fts5Iter *pIter){ ** is zero or greater, data from the first nSegment segments on level iLevel ** is merged. ** -** The iterator initially points to the first term/rowid entry in the +** The iterator initially points to the first term/rowid entry in the ** iterated data. */ static void fts5MultiIterNew( @@ -201828,18 +238374,19 @@ static void fts5MultiIterNew( if( iLevel<0 ){ assert( pStruct->nSegment==fts5StructureCountSegments(pStruct) ); nSeg = pStruct->nSegment; - nSeg += (p->pHash ? 1 : 0); + nSeg += (p->pHash && 0==(flags & FTS5INDEX_QUERY_SKIPHASH)); }else{ nSeg = MIN(pStruct->aLevel[iLevel].nSeg, nSegment); } } *ppOut = pNew = fts5MultiIterAlloc(p, nSeg); - if( pNew==0 ) return; + if( pNew==0 ){ + assert( p->rc!=SQLITE_OK ); + goto fts5MultiIterNew_post_check; + } pNew->bRev = (0!=(flags & FTS5INDEX_QUERY_DESC)); pNew->bSkipEmpty = (0!=(flags & FTS5INDEX_QUERY_SKIPEMPTY)); - pNew->pStruct = pStruct; pNew->pColset = pColset; - fts5StructureRef(pStruct); if( (flags & FTS5INDEX_QUERY_NOOUTPUT)==0 ){ fts5IterSetOutputCb(&p->rc, pNew); } @@ -201848,7 +238395,7 @@ static void fts5MultiIterNew( if( p->rc==SQLITE_OK ){ if( iLevel<0 ){ Fts5StructureLevel *pEnd = &pStruct->aLevel[pStruct->nLevel]; - if( p->pHash ){ + if( p->pHash && 0==(flags & FTS5INDEX_QUERY_SKIPHASH) ){ /* Add a segment iterator for the current contents of the hash table. */ Fts5SegIter *pIter = &pNew->aSeg[iIter++]; fts5SegIterHashInit(p, pTerm, nTerm, flags, pIter); @@ -201873,8 +238420,8 @@ static void fts5MultiIterNew( assert( iIter==nSeg ); } - /* If the above was successful, each component iterators now points - ** to the first entry in its segment. In this case initialize the + /* If the above was successful, each component iterators now points + ** to the first entry in its segment. In this case initialize the ** aFirst[] array. Or, if an error has occurred, free the iterator ** object and set the output variable to NULL. */ if( p->rc==SQLITE_OK ){ @@ -201889,7 +238436,9 @@ static void fts5MultiIterNew( fts5MultiIterSetEof(pNew); fts5AssertMultiIterSetup(p, pNew); - if( pNew->bSkipEmpty && fts5MultiIterIsEmpty(p, pNew) ){ + if( (pNew->bSkipEmpty && fts5MultiIterIsEmpty(p, pNew)) + || fts5MultiIterIsDeleted(pNew) + ){ fts5MultiIterNext(p, pNew, 0, 0); }else if( pNew->base.bEof==0 ){ Fts5SegIter *pSeg = &pNew->aSeg[pNew->aFirst[1].iFirst]; @@ -201900,6 +238449,10 @@ static void fts5MultiIterNew( fts5MultiIterFree(pNew); *ppOut = 0; } + +fts5MultiIterNew_post_check: + assert( (*ppOut)!=0 || p->rc!=SQLITE_OK ); + return; } /* @@ -201943,12 +238496,13 @@ static void fts5MultiIterNew2( } /* -** Return true if the iterator is at EOF or if an error has occurred. +** Return true if the iterator is at EOF or if an error has occurred. ** False otherwise. */ static int fts5MultiIterEof(Fts5Index *p, Fts5Iter *pIter){ - assert( p->rc - || (pIter->aSeg[ pIter->aFirst[1].iFirst ].pLeaf==0)==pIter->base.bEof + assert( pIter!=0 || p->rc!=SQLITE_OK ); + assert( p->rc!=SQLITE_OK + || (pIter->aSeg[ pIter->aFirst[1].iFirst ].pLeaf==0)==pIter->base.bEof ); return (p->rc || pIter->base.bEof); } @@ -201967,8 +238521,8 @@ static i64 fts5MultiIterRowid(Fts5Iter *pIter){ ** Move the iterator to the next entry at or following iMatch. */ static void fts5MultiIterNextFrom( - Fts5Index *p, - Fts5Iter *pIter, + Fts5Index *p, + Fts5Iter *pIter, i64 iMatch ){ while( 1 ){ @@ -201982,7 +238536,7 @@ static void fts5MultiIterNextFrom( } /* -** Return a pointer to a buffer containing the term associated with the +** Return a pointer to a buffer containing the term associated with the ** entry that the iterator currently points to. */ static const u8 *fts5MultiIterTerm(Fts5Iter *pIter, int *pn){ @@ -201993,11 +238547,11 @@ static const u8 *fts5MultiIterTerm(Fts5Iter *pIter, int *pn){ /* ** Allocate a new segment-id for the structure pStruct. The new segment -** id must be between 1 and 65335 inclusive, and must not be used by +** id must be between 1 and 65335 inclusive, and must not be used by ** any currently existing segment. If a free segment id cannot be found, ** SQLITE_FULL is returned. ** -** If an error has already occurred, this function is a no-op. 0 is +** If an error has already occurred, this function is a no-op. 0 is ** returned in this case. */ static int fts5AllocateSegid(Fts5Index *p, Fts5Structure *pStruct){ @@ -202017,24 +238571,24 @@ static int fts5AllocateSegid(Fts5Index *p, Fts5Structure *pStruct){ for(iLvl=0; iLvlnLevel; iLvl++){ for(iSeg=0; iSegaLevel[iLvl].nSeg; iSeg++){ int iId = pStruct->aLevel[iLvl].aSeg[iSeg].iSegid; - if( iId<=FTS5_MAX_SEGMENT ){ - aUsed[(iId-1) / 32] |= 1 << ((iId-1) % 32); + if( iId<=FTS5_MAX_SEGMENT && iId>0 ){ + aUsed[(iId-1) / 32] |= (u32)1 << ((iId-1) % 32); } } } for(i=0; aUsed[i]==0xFFFFFFFF; i++); mask = aUsed[i]; - for(iSegid=0; mask & (1 << iSegid); iSegid++); + for(iSegid=0; mask & ((u32)1 << iSegid); iSegid++); iSegid += 1 + i*32; #ifdef SQLITE_DEBUG for(iLvl=0; iLvlnLevel; iLvl++){ for(iSeg=0; iSegaLevel[iLvl].nSeg; iSeg++){ - assert( iSegid!=pStruct->aLevel[iLvl].aSeg[iSeg].iSegid ); + assert_nc( iSegid!=pStruct->aLevel[iLvl].aSeg[iSeg].iSegid ); } } - assert( iSegid>0 && iSegid<=FTS5_MAX_SEGMENT ); + assert_nc( iSegid>0 && iSegid<=FTS5_MAX_SEGMENT ); { sqlite3_stmt *pIdxSelect = fts5IdxSelectStmt(p); @@ -202042,7 +238596,7 @@ static int fts5AllocateSegid(Fts5Index *p, Fts5Structure *pStruct){ u8 aBlob[2] = {0xff, 0xff}; sqlite3_bind_int(pIdxSelect, 1, iSegid); sqlite3_bind_blob(pIdxSelect, 2, aBlob, 2, SQLITE_STATIC); - assert( sqlite3_step(pIdxSelect)!=SQLITE_ROW ); + assert_nc( sqlite3_step(pIdxSelect)!=SQLITE_ROW ); p->rc = sqlite3_reset(pIdxSelect); sqlite3_bind_null(pIdxSelect, 2); } @@ -202062,14 +238616,16 @@ static void fts5IndexDiscardData(Fts5Index *p){ if( p->pHash ){ sqlite3Fts5HashClear(p->pHash); p->nPendingData = 0; + p->nPendingRow = 0; } + p->nContentlessDelete = 0; } /* -** Return the size of the prefix, in bytes, that buffer +** Return the size of the prefix, in bytes, that buffer ** (pNew/) shares with buffer (pOld/nOld). ** -** Buffer (pNew/) is guaranteed to be greater +** Buffer (pNew/) is guaranteed to be greater ** than buffer (pOld/nOld). */ static int fts5PrefixCompress(int nOld, const u8 *pOld, const u8 *pNew){ @@ -202081,7 +238637,7 @@ static int fts5PrefixCompress(int nOld, const u8 *pOld, const u8 *pNew){ } static void fts5WriteDlidxClear( - Fts5Index *p, + Fts5Index *p, Fts5SegWriter *pWriter, int bFlush /* If true, write dlidx to disk */ ){ @@ -202092,7 +238648,7 @@ static void fts5WriteDlidxClear( if( pDlidx->buf.n==0 ) break; if( bFlush ){ assert( pDlidx->pgno!=0 ); - fts5DataWrite(p, + fts5DataWrite(p, FTS5_DLIDX_ROWID(pWriter->iSegid, i, pDlidx->pgno), pDlidx->buf.p, pDlidx->buf.n ); @@ -202112,13 +238668,13 @@ static int fts5WriteDlidxGrow( int nLvl ){ if( p->rc==SQLITE_OK && nLvl>=pWriter->nDlidx ){ - Fts5DlidxWriter *aDlidx = (Fts5DlidxWriter*)sqlite3_realloc( + Fts5DlidxWriter *aDlidx = (Fts5DlidxWriter*)sqlite3_realloc64( pWriter->aDlidx, sizeof(Fts5DlidxWriter) * nLvl ); if( aDlidx==0 ){ p->rc = SQLITE_NOMEM; }else{ - int nByte = sizeof(Fts5DlidxWriter) * (nLvl - pWriter->nDlidx); + size_t nByte = sizeof(Fts5DlidxWriter) * (nLvl - pWriter->nDlidx); memset(&aDlidx[pWriter->nDlidx], 0, nByte); pWriter->aDlidx = aDlidx; pWriter->nDlidx = nLvl; @@ -202146,8 +238702,8 @@ static int fts5WriteFlushDlidx(Fts5Index *p, Fts5SegWriter *pWriter){ } /* -** This function is called whenever processing of the doclist for the -** last term on leaf page (pWriter->iBtPage) is completed. +** This function is called whenever processing of the doclist for the +** last term on leaf page (pWriter->iBtPage) is completed. ** ** The doclist-index for that term is currently stored in-memory within the ** Fts5SegWriter.aDlidx[] array. If it is large enough, this function @@ -202191,8 +238747,10 @@ static void fts5WriteBtreeTerm( int nTerm, const u8 *pTerm /* First term on new page */ ){ fts5WriteFlushBtree(p, pWriter); - fts5BufferSet(&p->rc, &pWriter->btterm, nTerm, pTerm); - pWriter->iBtPage = pWriter->writer.pgno; + if( p->rc==SQLITE_OK ){ + fts5BufferSet(&p->rc, &pWriter->btterm, nTerm, pTerm); + pWriter->iBtPage = pWriter->writer.pgno; + } } /* @@ -202230,8 +238788,8 @@ static i64 fts5DlidxExtractFirstRowid(Fts5Buffer *pBuf){ ** doclist-index. */ static void fts5WriteDlidxAppend( - Fts5Index *p, - Fts5SegWriter *pWriter, + Fts5Index *p, + Fts5SegWriter *pWriter, i64 iRowid ){ int i; @@ -202244,11 +238802,11 @@ static void fts5WriteDlidxAppend( if( pDlidx->buf.n>=p->pConfig->pgsz ){ /* The current doclist-index page is full. Write it to disk and push ** a copy of iRowid (which will become the first rowid on the next - ** doclist-index leaf page) up into the next level of the b-tree + ** doclist-index leaf page) up into the next level of the b-tree ** hierarchy. If the node being flushed is currently the root node, ** also push its first rowid upwards. */ pDlidx->buf.p[0] = 0x01; /* Not the root node */ - fts5DataWrite(p, + fts5DataWrite(p, FTS5_DLIDX_ROWID(pWriter->iSegid, i, pDlidx->pgno), pDlidx->buf.p, pDlidx->buf.n ); @@ -202332,17 +238890,18 @@ static void fts5WriteFlushLeaf(Fts5Index *p, Fts5SegWriter *pWriter){ ** Append term pTerm/nTerm to the segment being written by the writer passed ** as the second argument. ** -** If an error occurs, set the Fts5Index.rc error code. If an error has +** If an error occurs, set the Fts5Index.rc error code. If an error has ** already occurred, this function is a no-op. */ static void fts5WriteAppendTerm( - Fts5Index *p, + Fts5Index *p, Fts5SegWriter *pWriter, - int nTerm, const u8 *pTerm + int nTerm, const u8 *pTerm ){ int nPrefix; /* Bytes of prefix compression for term */ Fts5PageWriter *pPage = &pWriter->writer; Fts5Buffer *pPgidx = &pWriter->writer.pgidx; + int nMin = MIN(pPage->term.n, nTerm); assert( p->rc==SQLITE_OK ); assert( pPage->buf.n>=4 ); @@ -202352,10 +238911,11 @@ static void fts5WriteAppendTerm( if( (pPage->buf.n + pPgidx->n + nTerm + 2)>=p->pConfig->pgsz ){ if( pPage->buf.n>4 ){ fts5WriteFlushLeaf(p, pWriter); + if( p->rc!=SQLITE_OK ) return; } fts5BufferGrow(&p->rc, &pPage->buf, nTerm+FTS5_DATA_PADDING); } - + /* TODO1: Updating pgidx here. */ pPgidx->n += sqlite3Fts5PutVarint( &pPgidx->p[pPgidx->n], pPage->buf.n - pPage->iPrevPgidx @@ -202371,11 +238931,11 @@ static void fts5WriteAppendTerm( if( pPage->pgno!=1 ){ /* This is the first term on a leaf that is not the leftmost leaf in ** the segment b-tree. In this case it is necessary to add a term to - ** the b-tree hierarchy that is (a) larger than the largest term + ** the b-tree hierarchy that is (a) larger than the largest term ** already written to the segment and (b) smaller than or equal to ** this term. In other words, a prefix of (pTerm/nTerm) that is one ** byte longer than the longest prefix (pTerm/nTerm) shares with the - ** previous term. + ** previous term. ** ** Usually, the previous term is available in pPage->term. The exception ** is if this is the first term written in an incremental-merge step. @@ -202384,13 +238944,14 @@ static void fts5WriteAppendTerm( ** inefficient, but still correct. */ int n = nTerm; if( pPage->term.n ){ - n = 1 + fts5PrefixCompress(pPage->term.n, pPage->term.p, pTerm); + n = 1 + fts5PrefixCompress(nMin, pPage->term.p, pTerm); } fts5WriteBtreeTerm(p, pWriter, n, pTerm); + if( p->rc!=SQLITE_OK ) return; pPage = &pWriter->writer; } }else{ - nPrefix = fts5PrefixCompress(pPage->term.n, pPage->term.p, pTerm); + nPrefix = fts5PrefixCompress(nMin, pPage->term.p, pTerm); fts5BufferAppendVarint(&p->rc, &pPage->buf, nPrefix); } @@ -202411,10 +238972,10 @@ static void fts5WriteAppendTerm( } /* -** Append a rowid and position-list size field to the writers output. +** Append a rowid and position-list size field to the writers output. */ static void fts5WriteAppendRowid( - Fts5Index *p, + Fts5Index *p, Fts5SegWriter *pWriter, i64 iRowid ){ @@ -202425,7 +238986,7 @@ static void fts5WriteAppendRowid( fts5WriteFlushLeaf(p, pWriter); } - /* If this is to be the first rowid written to the page, set the + /* If this is to be the first rowid written to the page, set the ** rowid-pointer in the page-header. Also append a value to the dlidx ** buffer, in case a doclist-index is required. */ if( pWriter->bFirstRowidInPage ){ @@ -202437,8 +238998,10 @@ static void fts5WriteAppendRowid( if( pWriter->bFirstRowidInDoclist || pWriter->bFirstRowidInPage ){ fts5BufferAppendVarint(&p->rc, &pPage->buf, iRowid); }else{ - assert( p->rc || iRowid>pWriter->iPrevRowid ); - fts5BufferAppendVarint(&p->rc, &pPage->buf, iRowid - pWriter->iPrevRowid); + assert_nc( p->rc || iRowid>pWriter->iPrevRowid ); + fts5BufferAppendVarint(&p->rc, &pPage->buf, + (u64)iRowid - (u64)pWriter->iPrevRowid + ); } pWriter->iPrevRowid = iRowid; pWriter->bFirstRowidInDoclist = 0; @@ -202447,18 +239010,18 @@ static void fts5WriteAppendRowid( } static void fts5WriteAppendPoslistData( - Fts5Index *p, - Fts5SegWriter *pWriter, - const u8 *aData, + Fts5Index *p, + Fts5SegWriter *pWriter, + const u8 *aData, int nData ){ Fts5PageWriter *pPage = &pWriter->writer; const u8 *a = aData; int n = nData; - + assert( p->pConfig->pgsz>0 ); - while( p->rc==SQLITE_OK - && (pPage->buf.n + pPage->pgidx.n + n)>=p->pConfig->pgsz + while( p->rc==SQLITE_OK + && (pPage->buf.n + pPage->pgidx.n + n)>=p->pConfig->pgsz ){ int nReq = p->pConfig->pgsz - pPage->buf.n - pPage->pgidx.n; int nCopy = 0; @@ -202481,7 +239044,7 @@ static void fts5WriteAppendPoslistData( ** allocations associated with the writer. */ static void fts5WriteFinish( - Fts5Index *p, + Fts5Index *p, Fts5SegWriter *pWriter, /* Writer object */ int *pnLeaf /* OUT: Number of leaf pages in b-tree */ ){ @@ -202509,8 +239072,8 @@ static void fts5WriteFinish( } static void fts5WriteInit( - Fts5Index *p, - Fts5SegWriter *pWriter, + Fts5Index *p, + Fts5SegWriter *pWriter, int iSegid ){ const int nBuffer = p->pConfig->pgsz + FTS5_DATA_PADDING; @@ -202533,7 +239096,7 @@ static void fts5WriteInit( if( p->pIdxWriter==0 ){ Fts5Config *pConfig = p->pConfig; fts5IndexPrepareStmt(p, &p->pIdxWriter, sqlite3_mprintf( - "INSERT INTO '%q'.'%q_idx'(segid,term,pgno) VALUES(?,?,?)", + "INSERT INTO '%q'.'%q_idx'(segid,term,pgno) VALUES(?,?,?)", pConfig->zDb, pConfig->zName )); } @@ -202559,7 +239122,7 @@ static void fts5TrimSegments(Fts5Index *p, Fts5Iter *pIter){ int i; Fts5Buffer buf; memset(&buf, 0, sizeof(Fts5Buffer)); - for(i=0; inSeg; i++){ + for(i=0; inSeg && p->rc==SQLITE_OK; i++){ Fts5SegIter *pSeg = &pIter->aSeg[i]; if( pSeg->pSeg==0 ){ /* no-op */ @@ -202577,35 +239140,44 @@ static void fts5TrimSegments(Fts5Index *p, Fts5Iter *pIter){ u8 aHdr[4] = {0x00, 0x00, 0x00, 0x00}; iLeafRowid = FTS5_SEGMENT_ROWID(iId, pSeg->iTermLeafPgno); - pData = fts5DataRead(p, iLeafRowid); + pData = fts5LeafRead(p, iLeafRowid); if( pData ){ - fts5BufferZero(&buf); - fts5BufferGrow(&p->rc, &buf, pData->nn); - fts5BufferAppendBlob(&p->rc, &buf, sizeof(aHdr), aHdr); - fts5BufferAppendVarint(&p->rc, &buf, pSeg->term.n); - fts5BufferAppendBlob(&p->rc, &buf, pSeg->term.n, pSeg->term.p); - fts5BufferAppendBlob(&p->rc, &buf, pData->szLeaf-iOff, &pData->p[iOff]); - if( p->rc==SQLITE_OK ){ - /* Set the szLeaf field */ - fts5PutU16(&buf.p[2], (u16)buf.n); - } + if( iOff>pData->szLeaf ){ + /* This can occur if the pages that the segments occupy overlap - if + ** a single page has been assigned to more than one segment. In + ** this case a prior iteration of this loop may have corrupted the + ** segment currently being trimmed. */ + p->rc = FTS5_CORRUPT; + }else{ + fts5BufferZero(&buf); + fts5BufferGrow(&p->rc, &buf, pData->nn); + fts5BufferAppendBlob(&p->rc, &buf, sizeof(aHdr), aHdr); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->term.n); + fts5BufferAppendBlob(&p->rc, &buf, pSeg->term.n, pSeg->term.p); + fts5BufferAppendBlob(&p->rc, &buf,pData->szLeaf-iOff,&pData->p[iOff]); + if( p->rc==SQLITE_OK ){ + /* Set the szLeaf field */ + fts5PutU16(&buf.p[2], (u16)buf.n); + } - /* Set up the new page-index array */ - fts5BufferAppendVarint(&p->rc, &buf, 4); - if( pSeg->iLeafPgno==pSeg->iTermLeafPgno - && pSeg->iEndofDoclistszLeaf - ){ - int nDiff = pData->szLeaf - pSeg->iEndofDoclist; - fts5BufferAppendVarint(&p->rc, &buf, buf.n - 1 - nDiff - 4); - fts5BufferAppendBlob(&p->rc, &buf, - pData->nn - pSeg->iPgidxOff, &pData->p[pSeg->iPgidxOff] - ); - } + /* Set up the new page-index array */ + fts5BufferAppendVarint(&p->rc, &buf, 4); + if( pSeg->iLeafPgno==pSeg->iTermLeafPgno + && pSeg->iEndofDoclistszLeaf + && pSeg->iPgidxOff<=pData->nn + ){ + int nDiff = pData->szLeaf - pSeg->iEndofDoclist; + fts5BufferAppendVarint(&p->rc, &buf, buf.n - 1 - nDiff - 4); + fts5BufferAppendBlob(&p->rc, &buf, + pData->nn - pSeg->iPgidxOff, &pData->p[pSeg->iPgidxOff] + ); + } + pSeg->pSeg->pgnoFirst = pSeg->iTermLeafPgno; + fts5DataDelete(p, FTS5_SEGMENT_ROWID(iId, 1), iLeafRowid); + fts5DataWrite(p, iLeafRowid, buf.p, buf.n); + } fts5DataRelease(pData); - pSeg->pSeg->pgnoFirst = pSeg->iTermLeafPgno; - fts5DataDelete(p, FTS5_SEGMENT_ROWID(iId, 1), iLeafRowid); - fts5DataWrite(p, iLeafRowid, buf.p, buf.n); } } } @@ -202613,8 +239185,8 @@ static void fts5TrimSegments(Fts5Index *p, Fts5Iter *pIter){ } static void fts5MergeChunkCallback( - Fts5Index *p, - void *pCtx, + Fts5Index *p, + void *pCtx, const u8 *pChunk, int nChunk ){ Fts5SegWriter *pWriter = (Fts5SegWriter*)pCtx; @@ -202683,6 +239255,12 @@ static void fts5IndexMergeLevel( /* Read input from all segments in the input level */ nInput = pLvl->nSeg; + + /* Set the range of origins that will go into the output segment. */ + if( pStruct->nOriginCntr>0 ){ + pSeg->iOrigin1 = pLvl->aSeg[0].iOrigin1; + pSeg->iOrigin2 = pLvl->aSeg[pLvl->nSeg-1].iOrigin2; + } } bOldest = (pLvlOut->nSeg==1 && pStruct->nLevel==iLvl+2); @@ -202697,7 +239275,7 @@ static void fts5IndexMergeLevel( const u8 *pTerm; pTerm = fts5MultiIterTerm(pIter, &nTerm); - if( nTerm!=term.n || memcmp(pTerm, term.p, nTerm) ){ + if( nTerm!=term.n || fts5Memcmp(pTerm, term.p, nTerm) ){ if( pnRem && writer.nLeafWritten>nRem ){ break; } @@ -202737,12 +239315,16 @@ static void fts5IndexMergeLevel( ** and last leaf page number at the same time. */ fts5WriteFinish(p, &writer, &pSeg->pgnoLast); + assert( pIter!=0 || p->rc!=SQLITE_OK ); if( fts5MultiIterEof(p, pIter) ){ int i; /* Remove the redundant segments from the %_data table */ + assert( pSeg->nEntry==0 ); for(i=0; iaSeg[i].iSegid); + Fts5StructureSegment *pOld = &pLvl->aSeg[i]; + pSeg->nEntry += (pOld->nEntry - pOld->nEntryTombstone); + fts5DataRemoveSegment(p, pOld); } /* Remove the redundant segments from the input level */ @@ -202768,6 +239350,43 @@ static void fts5IndexMergeLevel( if( pnRem ) *pnRem -= writer.nLeafWritten; } +/* +** If this is not a contentless_delete=1 table, or if the 'deletemerge' +** configuration option is set to 0, then this function always returns -1. +** Otherwise, it searches the structure object passed as the second argument +** for a level suitable for merging due to having a large number of +** tombstones in the tombstone hash. If one is found, its index is returned. +** Otherwise, if there is no suitable level, -1. +*/ +static int fts5IndexFindDeleteMerge(Fts5Index *p, Fts5Structure *pStruct){ + Fts5Config *pConfig = p->pConfig; + int iRet = -1; + if( pConfig->bContentlessDelete && pConfig->nDeleteMerge>0 ){ + int ii; + int nBest = 0; + + for(ii=0; iinLevel; ii++){ + Fts5StructureLevel *pLvl = &pStruct->aLevel[ii]; + i64 nEntry = 0; + i64 nTomb = 0; + int iSeg; + for(iSeg=0; iSegnSeg; iSeg++){ + nEntry += pLvl->aSeg[iSeg].nEntry; + nTomb += pLvl->aSeg[iSeg].nEntryTombstone; + } + assert_nc( nEntry>0 || pLvl->nSeg==0 ); + if( nEntry>0 ){ + int nPercent = (nTomb * 100) / nEntry; + if( nPercent>=pConfig->nDeleteMerge && nPercent>nBest ){ + iRet = ii; + nBest = nPercent; + } + } + } + } + return iRet; +} + /* ** Do up to nPg pages of automerge work on the index. ** @@ -202787,14 +239406,15 @@ static int fts5IndexMerge( int iBestLvl = 0; /* Level offering the most input segments */ int nBest = 0; /* Number of input segments on best level */ - /* Set iBestLvl to the level to read input segments from. */ + /* Set iBestLvl to the level to read input segments from. Or to -1 if + ** there is no level suitable to merge segments from. */ assert( pStruct->nLevel>0 ); for(iLvl=0; iLvlnLevel; iLvl++){ Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; if( pLvl->nMerge ){ if( pLvl->nMerge>nBest ){ iBestLvl = iLvl; - nBest = pLvl->nMerge; + nBest = nMin; } break; } @@ -202803,22 +239423,18 @@ static int fts5IndexMerge( iBestLvl = iLvl; } } - - /* If nBest is still 0, then the index must be empty. */ -#ifdef SQLITE_DEBUG - for(iLvl=0; nBest==0 && iLvlnLevel; iLvl++){ - assert( pStruct->aLevel[iLvl].nSeg==0 ); + if( nBestaLevel[iBestLvl].nMerge==0 ){ - break; - } + if( iBestLvl<0 ) break; bRet = 1; fts5IndexMergeLevel(p, &pStruct, iBestLvl, &nRem); if( p->rc==SQLITE_OK && pStruct->aLevel[iBestLvl].nMerge==0 ){ fts5StructurePromote(p, iBestLvl+1, pStruct); } + + if( nMin==1 ) nMin = 2; } *ppStruct = pStruct; return bRet; @@ -202829,7 +239445,7 @@ static int fts5IndexMerge( ** segment. This function updates the write-counter accordingly and, if ** necessary, performs incremental merge work. ** -** If an error occurs, set the Fts5Index.rc error code. If an error has +** If an error occurs, set the Fts5Index.rc error code. If an error has ** already occurred, this function is a no-op. */ static void fts5IndexAutomerge( @@ -202837,7 +239453,7 @@ static void fts5IndexAutomerge( Fts5Structure **ppStruct, /* IN/OUT: Current structure of index */ int nLeaf /* Number of output leaves just written */ ){ - if( p->rc==SQLITE_OK && p->pConfig->nAutomerge>0 ){ + if( p->rc==SQLITE_OK && p->pConfig->nAutomerge>0 && ALWAYS((*ppStruct)!=0) ){ Fts5Structure *pStruct = *ppStruct; u64 nWrite; /* Initial value of write-counter */ int nWork; /* Number of work-quanta to perform */ @@ -202859,16 +239475,16 @@ static void fts5IndexCrisismerge( ){ const int nCrisis = p->pConfig->nCrisisMerge; Fts5Structure *pStruct = *ppStruct; - int iLvl = 0; - - assert( p->rc!=SQLITE_OK || pStruct->nLevel>0 ); - while( p->rc==SQLITE_OK && pStruct->aLevel[iLvl].nSeg>=nCrisis ){ - fts5IndexMergeLevel(p, &pStruct, iLvl, 0); - assert( p->rc!=SQLITE_OK || pStruct->nLevel>(iLvl+1) ); - fts5StructurePromote(p, iLvl+1, pStruct); - iLvl++; + if( pStruct && pStruct->nLevel>0 ){ + int iLvl = 0; + while( p->rc==SQLITE_OK && pStruct->aLevel[iLvl].nSeg>=nCrisis ){ + fts5IndexMergeLevel(p, &pStruct, iLvl, 0); + assert( p->rc!=SQLITE_OK || pStruct->nLevel>(iLvl+1) ); + fts5StructurePromote(p, iLvl+1, pStruct); + iLvl++; + } + *ppStruct = pStruct; } - *ppStruct = pStruct; } static int fts5IndexReturn(Fts5Index *p){ @@ -202880,12 +239496,12 @@ static int fts5IndexReturn(Fts5Index *p){ typedef struct Fts5FlushCtx Fts5FlushCtx; struct Fts5FlushCtx { Fts5Index *pIdx; - Fts5SegWriter writer; + Fts5SegWriter writer; }; /* ** Buffer aBuf[] contains a list of varints, all small enough to fit -** in a 32-bit integer. Return the size of the largest prefix of this +** in a 32-bit integer. Return the size of the largest prefix of this ** list nMax bytes or less in size. */ static int fts5PoslistPrefix(const u8 *aBuf, int nMax){ @@ -202903,10 +239519,423 @@ static int fts5PoslistPrefix(const u8 *aBuf, int nMax){ } /* -** Flush the contents of in-memory hash table iHash to a new level-0 +** Execute the SQL statement: +** +** DELETE FROM %_idx WHERE (segid, (pgno/2)) = ($iSegid, $iPgno); +** +** This is used when a secure-delete operation removes the last term +** from a segment leaf page. In that case the %_idx entry is removed +** too. This is done to ensure that if all instances of a token are +** removed from an fts5 database in secure-delete mode, no trace of +** the token itself remains in the database. +*/ +static void fts5SecureDeleteIdxEntry( + Fts5Index *p, /* FTS5 backend object */ + int iSegid, /* Id of segment to delete entry for */ + int iPgno /* Page number within segment */ +){ + if( iPgno!=1 ){ + assert( p->pConfig->iVersion==FTS5_CURRENT_VERSION_SECUREDELETE ); + if( p->pDeleteFromIdx==0 ){ + fts5IndexPrepareStmt(p, &p->pDeleteFromIdx, sqlite3_mprintf( + "DELETE FROM '%q'.'%q_idx' WHERE (segid, (pgno/2)) = (?1, ?2)", + p->pConfig->zDb, p->pConfig->zName + )); + } + if( p->rc==SQLITE_OK ){ + sqlite3_bind_int(p->pDeleteFromIdx, 1, iSegid); + sqlite3_bind_int(p->pDeleteFromIdx, 2, iPgno); + sqlite3_step(p->pDeleteFromIdx); + p->rc = sqlite3_reset(p->pDeleteFromIdx); + } + } +} + +/* +** This is called when a secure-delete operation removes a position-list +** that overflows onto segment page iPgno of segment pSeg. This function +** rewrites node iPgno, and possibly one or more of its right-hand peers, +** to remove this portion of the position list. +** +** Output variable (*pbLastInDoclist) is set to true if the position-list +** removed is followed by a new term or the end-of-segment, or false if +** it is followed by another rowid/position list. +*/ +static void fts5SecureDeleteOverflow( + Fts5Index *p, + Fts5StructureSegment *pSeg, + int iPgno, + int *pbLastInDoclist +){ + const int bDetailNone = (p->pConfig->eDetail==FTS5_DETAIL_NONE); + int pgno; + Fts5Data *pLeaf = 0; + assert( iPgno!=1 ); + + *pbLastInDoclist = 1; + for(pgno=iPgno; p->rc==SQLITE_OK && pgno<=pSeg->pgnoLast; pgno++){ + i64 iRowid = FTS5_SEGMENT_ROWID(pSeg->iSegid, pgno); + int iNext = 0; + u8 *aPg = 0; + + pLeaf = fts5DataRead(p, iRowid); + if( pLeaf==0 ) break; + aPg = pLeaf->p; + + iNext = fts5GetU16(&aPg[0]); + if( iNext!=0 ){ + *pbLastInDoclist = 0; + } + if( iNext==0 && pLeaf->szLeaf!=pLeaf->nn ){ + fts5GetVarint32(&aPg[pLeaf->szLeaf], iNext); + } + + if( iNext==0 ){ + /* The page contains no terms or rowids. Replace it with an empty + ** page and move on to the right-hand peer. */ + const u8 aEmpty[] = {0x00, 0x00, 0x00, 0x04}; + assert_nc( bDetailNone==0 || pLeaf->nn==4 ); + if( bDetailNone==0 ) fts5DataWrite(p, iRowid, aEmpty, sizeof(aEmpty)); + fts5DataRelease(pLeaf); + pLeaf = 0; + }else if( bDetailNone ){ + break; + }else if( iNext>=pLeaf->szLeaf || pLeaf->nnszLeaf || iNext<4 ){ + p->rc = FTS5_CORRUPT; + break; + }else{ + int nShift = iNext - 4; + int nPg; + + int nIdx = 0; + u8 *aIdx = 0; + + /* Unless the current page footer is 0 bytes in size (in which case + ** the new page footer will be as well), allocate and populate a + ** buffer containing the new page footer. Set stack variables aIdx + ** and nIdx accordingly. */ + if( pLeaf->nn>pLeaf->szLeaf ){ + int iFirst = 0; + int i1 = pLeaf->szLeaf; + int i2 = 0; + + i1 += fts5GetVarint32(&aPg[i1], iFirst); + if( iFirstrc = FTS5_CORRUPT; + break; + } + aIdx = sqlite3Fts5MallocZero(&p->rc, (pLeaf->nn-pLeaf->szLeaf)+2); + if( aIdx==0 ) break; + i2 = sqlite3Fts5PutVarint(aIdx, iFirst-nShift); + if( i1nn ){ + memcpy(&aIdx[i2], &aPg[i1], pLeaf->nn-i1); + i2 += (pLeaf->nn-i1); + } + nIdx = i2; + } + + /* Modify the contents of buffer aPg[]. Set nPg to the new size + ** in bytes. The new page is always smaller than the old. */ + nPg = pLeaf->szLeaf - nShift; + memmove(&aPg[4], &aPg[4+nShift], nPg-4); + fts5PutU16(&aPg[2], nPg); + if( fts5GetU16(&aPg[0]) ) fts5PutU16(&aPg[0], 4); + if( nIdx>0 ){ + memcpy(&aPg[nPg], aIdx, nIdx); + nPg += nIdx; + } + sqlite3_free(aIdx); + + /* Write the new page to disk and exit the loop */ + assert( nPg>4 || fts5GetU16(aPg)==0 ); + fts5DataWrite(p, iRowid, aPg, nPg); + break; + } + } + fts5DataRelease(pLeaf); +} + +/* +** Completely remove the entry that pSeg currently points to from +** the database. +*/ +static void fts5DoSecureDelete( + Fts5Index *p, + Fts5SegIter *pSeg +){ + const int bDetailNone = (p->pConfig->eDetail==FTS5_DETAIL_NONE); + int iSegid = pSeg->pSeg->iSegid; + u8 *aPg = pSeg->pLeaf->p; + int nPg = pSeg->pLeaf->nn; + int iPgIdx = pSeg->pLeaf->szLeaf; + + u64 iDelta = 0; + u64 iNextDelta = 0; + int iNextOff = 0; + int iOff = 0; + int nIdx = 0; + u8 *aIdx = 0; + int bLastInDoclist = 0; + int iIdx = 0; + int iStart = 0; + int iKeyOff = 0; + int iPrevKeyOff = 0; + int iDelKeyOff = 0; /* Offset of deleted key, if any */ + + nIdx = nPg-iPgIdx; + aIdx = sqlite3Fts5MallocZero(&p->rc, nIdx+16); + if( p->rc ) return; + memcpy(aIdx, &aPg[iPgIdx], nIdx); + + /* At this point segment iterator pSeg points to the entry + ** this function should remove from the b-tree segment. + ** + ** In detail=full or detail=column mode, pSeg->iLeafOffset is the + ** offset of the first byte in the position-list for the entry to + ** remove. Immediately before this comes two varints that will also + ** need to be removed: + ** + ** + the rowid or delta rowid value for the entry, and + ** + the size of the position list in bytes. + ** + ** Or, in detail=none mode, there is a single varint prior to + ** pSeg->iLeafOffset - the rowid or delta rowid value. + ** + ** This block sets the following variables: + ** + ** iStart: + ** iDelta: + */ + { + int iSOP; + if( pSeg->iLeafPgno==pSeg->iTermLeafPgno ){ + iStart = pSeg->iTermLeafOffset; + }else{ + iStart = fts5GetU16(&aPg[0]); + } + + iSOP = iStart + fts5GetVarint(&aPg[iStart], &iDelta); + assert_nc( iSOP<=pSeg->iLeafOffset ); + + if( bDetailNone ){ + while( iSOPiLeafOffset ){ + if( aPg[iSOP]==0x00 ) iSOP++; + if( aPg[iSOP]==0x00 ) iSOP++; + iStart = iSOP; + iSOP = iStart + fts5GetVarint(&aPg[iStart], &iDelta); + } + + iNextOff = iSOP; + if( iNextOffiEndofDoclist && aPg[iNextOff]==0x00 ) iNextOff++; + if( iNextOffiEndofDoclist && aPg[iNextOff]==0x00 ) iNextOff++; + + }else{ + int nPos = 0; + iSOP += fts5GetVarint32(&aPg[iSOP], nPos); + while( iSOPiLeafOffset ){ + iStart = iSOP + (nPos/2); + iSOP = iStart + fts5GetVarint(&aPg[iStart], &iDelta); + iSOP += fts5GetVarint32(&aPg[iSOP], nPos); + } + assert_nc( iSOP==pSeg->iLeafOffset ); + iNextOff = pSeg->iLeafOffset + pSeg->nPos; + } + } + + iOff = iStart; + if( iNextOff>=iPgIdx ){ + int pgno = pSeg->iLeafPgno+1; + fts5SecureDeleteOverflow(p, pSeg->pSeg, pgno, &bLastInDoclist); + iNextOff = iPgIdx; + }else{ + /* Set bLastInDoclist to true if the entry being removed is the last + ** in its doclist. */ + for(iIdx=0, iKeyOff=0; iIdxiTermLeafOffset && pSeg->iLeafPgno==pSeg->iTermLeafPgno + ){ + /* The entry being removed was the only position list in its + ** doclist. Therefore the term needs to be removed as well. */ + int iKey = 0; + for(iIdx=0, iKeyOff=0; iIdx(u32)iStart ) break; + iKeyOff += iVal; + } + + iDelKeyOff = iOff = iKeyOff; + if( iNextOff!=iPgIdx ){ + int nPrefix = 0; + int nSuffix = 0; + int nPrefix2 = 0; + int nSuffix2 = 0; + + iDelKeyOff = iNextOff; + iNextOff += fts5GetVarint32(&aPg[iNextOff], nPrefix2); + iNextOff += fts5GetVarint32(&aPg[iNextOff], nSuffix2); + + if( iKey!=1 ){ + iKeyOff += fts5GetVarint32(&aPg[iKeyOff], nPrefix); + } + iKeyOff += fts5GetVarint32(&aPg[iKeyOff], nSuffix); + + nPrefix = MIN(nPrefix, nPrefix2); + nSuffix = (nPrefix2 + nSuffix2) - nPrefix; + + if( (iKeyOff+nSuffix)>iPgIdx || (iNextOff+nSuffix2)>iPgIdx ){ + p->rc = FTS5_CORRUPT; + }else{ + if( iKey!=1 ){ + iOff += sqlite3Fts5PutVarint(&aPg[iOff], nPrefix); + } + iOff += sqlite3Fts5PutVarint(&aPg[iOff], nSuffix); + if( nPrefix2>pSeg->term.n ){ + p->rc = FTS5_CORRUPT; + }else if( nPrefix2>nPrefix ){ + memcpy(&aPg[iOff], &pSeg->term.p[nPrefix], nPrefix2-nPrefix); + iOff += (nPrefix2-nPrefix); + } + memmove(&aPg[iOff], &aPg[iNextOff], nSuffix2); + iOff += nSuffix2; + iNextOff += nSuffix2; + } + } + }else if( iStart==4 ){ + int iPgno; + + assert_nc( pSeg->iLeafPgno>pSeg->iTermLeafPgno ); + /* The entry being removed may be the only position list in + ** its doclist. */ + for(iPgno=pSeg->iLeafPgno-1; iPgno>pSeg->iTermLeafPgno; iPgno-- ){ + Fts5Data *pPg = fts5DataRead(p, FTS5_SEGMENT_ROWID(iSegid, iPgno)); + int bEmpty = (pPg && pPg->nn==4); + fts5DataRelease(pPg); + if( bEmpty==0 ) break; + } + + if( iPgno==pSeg->iTermLeafPgno ){ + i64 iId = FTS5_SEGMENT_ROWID(iSegid, pSeg->iTermLeafPgno); + Fts5Data *pTerm = fts5DataRead(p, iId); + if( pTerm && pTerm->szLeaf==pSeg->iTermLeafOffset ){ + u8 *aTermIdx = &pTerm->p[pTerm->szLeaf]; + int nTermIdx = pTerm->nn - pTerm->szLeaf; + int iTermIdx = 0; + int iTermOff = 0; + + while( 1 ){ + u32 iVal = 0; + int nByte = fts5GetVarint32(&aTermIdx[iTermIdx], iVal); + iTermOff += iVal; + if( (iTermIdx+nByte)>=nTermIdx ) break; + iTermIdx += nByte; + } + nTermIdx = iTermIdx; + + memmove(&pTerm->p[iTermOff], &pTerm->p[pTerm->szLeaf], nTermIdx); + fts5PutU16(&pTerm->p[2], iTermOff); + + fts5DataWrite(p, iId, pTerm->p, iTermOff+nTermIdx); + if( nTermIdx==0 ){ + fts5SecureDeleteIdxEntry(p, iSegid, pSeg->iTermLeafPgno); + } + } + fts5DataRelease(pTerm); + } + } + + if( p->rc==SQLITE_OK ){ + const int nMove = nPg - iNextOff; + int nShift = 0; + + memmove(&aPg[iOff], &aPg[iNextOff], nMove); + iPgIdx -= (iNextOff - iOff); + nPg = iPgIdx; + fts5PutU16(&aPg[2], iPgIdx); + + nShift = iNextOff - iOff; + for(iIdx=0, iKeyOff=0, iPrevKeyOff=0; iIdxiOff ){ + iKeyOff -= nShift; + nShift = 0; + } + nPg += sqlite3Fts5PutVarint(&aPg[nPg], iKeyOff - iPrevKeyOff); + iPrevKeyOff = iKeyOff; + } + } + + if( iPgIdx==nPg && nIdx>0 && pSeg->iLeafPgno!=1 ){ + fts5SecureDeleteIdxEntry(p, iSegid, pSeg->iLeafPgno); + } + + assert_nc( nPg>4 || fts5GetU16(aPg)==0 ); + fts5DataWrite(p, FTS5_SEGMENT_ROWID(iSegid,pSeg->iLeafPgno), aPg,nPg); + } + sqlite3_free(aIdx); +} + +/* +** This is called as part of flushing a delete to disk in 'secure-delete' +** mode. It edits the segments within the database described by argument +** pStruct to remove the entries for term zTerm, rowid iRowid. +*/ +static void fts5FlushSecureDelete( + Fts5Index *p, + Fts5Structure *pStruct, + const char *zTerm, + i64 iRowid +){ + const int f = FTS5INDEX_QUERY_SKIPHASH; + int nTerm = (int)strlen(zTerm); + Fts5Iter *pIter = 0; /* Used to find term instance */ + + fts5MultiIterNew(p, pStruct, f, 0, (const u8*)zTerm, nTerm, -1, 0, &pIter); + if( fts5MultiIterEof(p, pIter)==0 ){ + i64 iThis = fts5MultiIterRowid(pIter); + if( iThisrc==SQLITE_OK + && fts5MultiIterEof(p, pIter)==0 + && iRowid==fts5MultiIterRowid(pIter) + ){ + Fts5SegIter *pSeg = &pIter->aSeg[pIter->aFirst[1].iFirst]; + fts5DoSecureDelete(p, pSeg); + } + } + + fts5MultiIterFree(pIter); +} + + +/* +** Flush the contents of in-memory hash table iHash to a new level-0 ** segment on disk. Also update the corresponding structure record. ** -** If an error occurs, set the Fts5Index.rc error code. If an error has +** If an error occurs, set the Fts5Index.rc error code. If an error has ** already occurred, this function is a no-op. */ static void fts5FlushOneHash(Fts5Index *p){ @@ -202918,144 +239947,197 @@ static void fts5FlushOneHash(Fts5Index *p){ /* Obtain a reference to the index structure and allocate a new segment-id ** for the new level-0 segment. */ pStruct = fts5StructureRead(p); - iSegid = fts5AllocateSegid(p, pStruct); fts5StructureInvalidate(p); - if( iSegid ){ - const int pgsz = p->pConfig->pgsz; - int eDetail = p->pConfig->eDetail; - Fts5StructureSegment *pSeg; /* New segment within pStruct */ - Fts5Buffer *pBuf; /* Buffer in which to assemble leaf page */ - Fts5Buffer *pPgidx; /* Buffer in which to assemble pgidx */ + if( sqlite3Fts5HashIsEmpty(pHash)==0 ){ + iSegid = fts5AllocateSegid(p, pStruct); + if( iSegid ){ + const int pgsz = p->pConfig->pgsz; + int eDetail = p->pConfig->eDetail; + int bSecureDelete = p->pConfig->bSecureDelete; + Fts5StructureSegment *pSeg; /* New segment within pStruct */ + Fts5Buffer *pBuf; /* Buffer in which to assemble leaf page */ + Fts5Buffer *pPgidx; /* Buffer in which to assemble pgidx */ - Fts5SegWriter writer; - fts5WriteInit(p, &writer, iSegid); + Fts5SegWriter writer; + fts5WriteInit(p, &writer, iSegid); - pBuf = &writer.writer.buf; - pPgidx = &writer.writer.pgidx; + pBuf = &writer.writer.buf; + pPgidx = &writer.writer.pgidx; - /* fts5WriteInit() should have initialized the buffers to (most likely) - ** the maximum space required. */ - assert( p->rc || pBuf->nSpace>=(pgsz + FTS5_DATA_PADDING) ); - assert( p->rc || pPgidx->nSpace>=(pgsz + FTS5_DATA_PADDING) ); + /* fts5WriteInit() should have initialized the buffers to (most likely) + ** the maximum space required. */ + assert( p->rc || pBuf->nSpace>=(pgsz + FTS5_DATA_PADDING) ); + assert( p->rc || pPgidx->nSpace>=(pgsz + FTS5_DATA_PADDING) ); - /* Begin scanning through hash table entries. This loop runs once for each - ** term/doclist currently stored within the hash table. */ - if( p->rc==SQLITE_OK ){ - p->rc = sqlite3Fts5HashScanInit(pHash, 0, 0); - } - while( p->rc==SQLITE_OK && 0==sqlite3Fts5HashScanEof(pHash) ){ - const char *zTerm; /* Buffer containing term */ - const u8 *pDoclist; /* Pointer to doclist for this term */ - int nDoclist; /* Size of doclist in bytes */ + /* Begin scanning through hash table entries. This loop runs once for each + ** term/doclist currently stored within the hash table. */ + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3Fts5HashScanInit(pHash, 0, 0); + } + while( p->rc==SQLITE_OK && 0==sqlite3Fts5HashScanEof(pHash) ){ + const char *zTerm; /* Buffer containing term */ + int nTerm; /* Size of zTerm in bytes */ + const u8 *pDoclist; /* Pointer to doclist for this term */ + int nDoclist; /* Size of doclist in bytes */ - /* Write the term for this entry to disk. */ - sqlite3Fts5HashScanEntry(pHash, &zTerm, &pDoclist, &nDoclist); - fts5WriteAppendTerm(p, &writer, (int)strlen(zTerm), (const u8*)zTerm); + /* Get the term and doclist for this entry. */ + sqlite3Fts5HashScanEntry(pHash, &zTerm, &pDoclist, &nDoclist); + nTerm = (int)strlen(zTerm); + if( bSecureDelete==0 ){ + fts5WriteAppendTerm(p, &writer, nTerm, (const u8*)zTerm); + if( p->rc!=SQLITE_OK ) break; + assert( writer.bFirstRowidInPage==0 ); + } - assert( writer.bFirstRowidInPage==0 ); - if( pgsz>=(pBuf->n + pPgidx->n + nDoclist + 1) ){ - /* The entire doclist will fit on the current leaf. */ - fts5BufferSafeAppendBlob(pBuf, pDoclist, nDoclist); - }else{ - i64 iRowid = 0; - i64 iDelta = 0; - int iOff = 0; + if( !bSecureDelete && pgsz>=(pBuf->n + pPgidx->n + nDoclist + 1) ){ + /* The entire doclist will fit on the current leaf. */ + fts5BufferSafeAppendBlob(pBuf, pDoclist, nDoclist); + }else{ + int bTermWritten = !bSecureDelete; + i64 iRowid = 0; + i64 iPrev = 0; + int iOff = 0; - /* The entire doclist will not fit on this leaf. The following - ** loop iterates through the poslists that make up the current - ** doclist. */ - while( p->rc==SQLITE_OK && iOffp[0], (u16)pBuf->n); /* first rowid on page */ - pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iRowid); - writer.bFirstRowidInPage = 0; - fts5WriteDlidxAppend(p, &writer, iRowid); - }else{ - pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iDelta); - } - assert( pBuf->n<=pBuf->nSpace ); + /* The entire doclist will not fit on this leaf. The following + ** loop iterates through the poslists that make up the current + ** doclist. */ + while( p->rc==SQLITE_OK && iOffp[pBuf->n++] = 0; - iOff++; + /* If in secure delete mode, and if this entry in the poslist is + ** in fact a delete, then edit the existing segments directly + ** using fts5FlushSecureDelete(). */ + if( bSecureDelete ){ + if( eDetail==FTS5_DETAIL_NONE ){ + if( iOffrc!=SQLITE_OK || pDoclist[iOff]==0x01 ){ + iOff++; + continue; + } + } + } + + if( p->rc==SQLITE_OK && bTermWritten==0 ){ + fts5WriteAppendTerm(p, &writer, nTerm, (const u8*)zTerm); + bTermWritten = 1; + assert( p->rc!=SQLITE_OK || writer.bFirstRowidInPage==0 ); + } + + if( writer.bFirstRowidInPage ){ + fts5PutU16(&pBuf->p[0], (u16)pBuf->n); /* first rowid on page */ + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iRowid); + writer.bFirstRowidInPage = 0; + fts5WriteDlidxAppend(p, &writer, iRowid); + }else{ + u64 iRowidDelta = (u64)iRowid - (u64)iPrev; + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iRowidDelta); + } + if( p->rc!=SQLITE_OK ) break; + assert( pBuf->n<=pBuf->nSpace ); + iPrev = iRowid; + + if( eDetail==FTS5_DETAIL_NONE ){ if( iOffp[pBuf->n++] = 0; iOff++; + if( iOffp[pBuf->n++] = 0; + iOff++; + } + } + if( (pBuf->n + pPgidx->n)>=pgsz ){ + fts5WriteFlushLeaf(p, &writer); } - } - if( (pBuf->n + pPgidx->n)>=pgsz ){ - fts5WriteFlushLeaf(p, &writer); - } - }else{ - int bDummy; - int nPos; - int nCopy = fts5GetPoslistSize(&pDoclist[iOff], &nPos, &bDummy); - nCopy += nPos; - if( (pBuf->n + pPgidx->n + nCopy) <= pgsz ){ - /* The entire poslist will fit on the current leaf. So copy - ** it in one go. */ - fts5BufferSafeAppendBlob(pBuf, &pDoclist[iOff], nCopy); }else{ - /* The entire poslist will not fit on this leaf. So it needs - ** to be broken into sections. The only qualification being - ** that each varint must be stored contiguously. */ - const u8 *pPoslist = &pDoclist[iOff]; - int iPos = 0; - while( p->rc==SQLITE_OK ){ - int nSpace = pgsz - pBuf->n - pPgidx->n; - int n = 0; - if( (nCopy - iPos)<=nSpace ){ - n = nCopy - iPos; - }else{ - n = fts5PoslistPrefix(&pPoslist[iPos], nSpace); + int bDummy; + int nPos; + int nCopy = fts5GetPoslistSize(&pDoclist[iOff], &nPos, &bDummy); + nCopy += nPos; + if( (pBuf->n + pPgidx->n + nCopy) <= pgsz ){ + /* The entire poslist will fit on the current leaf. So copy + ** it in one go. */ + fts5BufferSafeAppendBlob(pBuf, &pDoclist[iOff], nCopy); + }else{ + /* The entire poslist will not fit on this leaf. So it needs + ** to be broken into sections. The only qualification being + ** that each varint must be stored contiguously. */ + const u8 *pPoslist = &pDoclist[iOff]; + int iPos = 0; + while( p->rc==SQLITE_OK ){ + int nSpace = pgsz - pBuf->n - pPgidx->n; + int n = 0; + if( (nCopy - iPos)<=nSpace ){ + n = nCopy - iPos; + }else{ + n = fts5PoslistPrefix(&pPoslist[iPos], nSpace); + } + assert( n>0 ); + fts5BufferSafeAppendBlob(pBuf, &pPoslist[iPos], n); + iPos += n; + if( (pBuf->n + pPgidx->n)>=pgsz ){ + fts5WriteFlushLeaf(p, &writer); + } + if( iPos>=nCopy ) break; } - assert( n>0 ); - fts5BufferSafeAppendBlob(pBuf, &pPoslist[iPos], n); - iPos += n; - if( (pBuf->n + pPgidx->n)>=pgsz ){ - fts5WriteFlushLeaf(p, &writer); - } - if( iPos>=nCopy ) break; } + iOff += nCopy; } - iOff += nCopy; } } + + /* TODO2: Doclist terminator written here. */ + /* pBuf->p[pBuf->n++] = '\0'; */ + assert( pBuf->n<=pBuf->nSpace ); + if( p->rc==SQLITE_OK ) sqlite3Fts5HashScanNext(pHash); } + sqlite3Fts5HashClear(pHash); + fts5WriteFinish(p, &writer, &pgnoLast); - /* TODO2: Doclist terminator written here. */ - /* pBuf->p[pBuf->n++] = '\0'; */ - assert( pBuf->n<=pBuf->nSpace ); - sqlite3Fts5HashScanNext(pHash); + assert( p->rc!=SQLITE_OK || bSecureDelete || pgnoLast>0 ); + if( pgnoLast>0 ){ + /* Update the Fts5Structure. It is written back to the database by the + ** fts5StructureRelease() call below. */ + if( pStruct->nLevel==0 ){ + fts5StructureAddLevel(&p->rc, &pStruct); + } + fts5StructureExtendLevel(&p->rc, pStruct, 0, 1, 0); + if( p->rc==SQLITE_OK ){ + pSeg = &pStruct->aLevel[0].aSeg[ pStruct->aLevel[0].nSeg++ ]; + pSeg->iSegid = iSegid; + pSeg->pgnoFirst = 1; + pSeg->pgnoLast = pgnoLast; + if( pStruct->nOriginCntr>0 ){ + pSeg->iOrigin1 = pStruct->nOriginCntr; + pSeg->iOrigin2 = pStruct->nOriginCntr; + pSeg->nEntry = p->nPendingRow; + pStruct->nOriginCntr++; + } + pStruct->nSegment++; + } + fts5StructurePromote(p, 0, pStruct); + } } - sqlite3Fts5HashClear(pHash); - fts5WriteFinish(p, &writer, &pgnoLast); - - /* Update the Fts5Structure. It is written back to the database by the - ** fts5StructureRelease() call below. */ - if( pStruct->nLevel==0 ){ - fts5StructureAddLevel(&p->rc, &pStruct); - } - fts5StructureExtendLevel(&p->rc, pStruct, 0, 1, 0); - if( p->rc==SQLITE_OK ){ - pSeg = &pStruct->aLevel[0].aSeg[ pStruct->aLevel[0].nSeg++ ]; - pSeg->iSegid = iSegid; - pSeg->pgnoFirst = 1; - pSeg->pgnoLast = pgnoLast; - pStruct->nSegment++; - } - fts5StructurePromote(p, 0, pStruct); } - fts5IndexAutomerge(p, &pStruct, pgnoLast); + fts5IndexAutomerge(p, &pStruct, pgnoLast + p->nContentlessDelete); fts5IndexCrisismerge(p, &pStruct); fts5StructureWrite(p, pStruct); fts5StructureRelease(pStruct); + p->nContentlessDelete = 0; } /* @@ -203063,36 +240145,42 @@ static void fts5FlushOneHash(Fts5Index *p){ */ static void fts5IndexFlush(Fts5Index *p){ /* Unless it is empty, flush the hash table to disk */ - if( p->nPendingData ){ + if( p->nPendingData || p->nContentlessDelete ){ assert( p->pHash ); - p->nPendingData = 0; fts5FlushOneHash(p); + p->nPendingData = 0; + p->nPendingRow = 0; } } static Fts5Structure *fts5IndexOptimizeStruct( - Fts5Index *p, + Fts5Index *p, Fts5Structure *pStruct ){ Fts5Structure *pNew = 0; - int nByte = sizeof(Fts5Structure); + sqlite3_int64 nByte = sizeof(Fts5Structure); int nSeg = pStruct->nSegment; int i; /* Figure out if this structure requires optimization. A structure does ** not require optimization if either: ** - ** + it consists of fewer than two segments, or - ** + all segments are on the same level, or - ** + all segments except one are currently inputs to a merge operation. + ** 1. it consists of fewer than two segments, or + ** 2. all segments are on the same level, or + ** 3. all segments except one are currently inputs to a merge operation. ** - ** In the first case, return NULL. In the second, increment the ref-count - ** on *pStruct and return a copy of the pointer to it. + ** In the first case, if there are no tombstone hash pages, return NULL. In + ** the second, increment the ref-count on *pStruct and return a copy of the + ** pointer to it. */ - if( nSeg<2 ) return 0; + if( nSeg==0 ) return 0; for(i=0; inLevel; i++){ int nThis = pStruct->aLevel[i].nSeg; - if( nThis==nSeg || (nThis==nSeg-1 && pStruct->aLevel[i].nMerge==nThis) ){ + int nMerge = pStruct->aLevel[i].nMerge; + if( nThis>0 && (nThis==nSeg || (nThis==nSeg-1 && nMerge==nThis)) ){ + if( nSeg==1 && nThis==1 && pStruct->aLevel[i].aSeg[0].nPgTombstone==0 ){ + return 0; + } fts5StructureRef(pStruct); return pStruct; } @@ -203105,10 +240193,11 @@ static Fts5Structure *fts5IndexOptimizeStruct( if( pNew ){ Fts5StructureLevel *pLvl; nByte = nSeg * sizeof(Fts5StructureSegment); - pNew->nLevel = pStruct->nLevel+1; + pNew->nLevel = MIN(pStruct->nLevel+1, FTS5_MAX_LEVEL); pNew->nRef = 1; pNew->nWriteCounter = pStruct->nWriteCounter; - pLvl = &pNew->aLevel[pStruct->nLevel]; + pNew->nOriginCntr = pStruct->nOriginCntr; + pLvl = &pNew->aLevel[pNew->nLevel-1]; pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&p->rc, nByte); if( pLvl->aSeg ){ int iLvl, iSeg; @@ -203138,6 +240227,7 @@ static int sqlite3Fts5IndexOptimize(Fts5Index *p){ assert( p->rc==SQLITE_OK ); fts5IndexFlush(p); + assert( p->nContentlessDelete==0 ); pStruct = fts5StructureRead(p); fts5StructureInvalidate(p); @@ -203159,7 +240249,7 @@ static int sqlite3Fts5IndexOptimize(Fts5Index *p){ fts5StructureRelease(pNew); } - return fts5IndexReturn(p); + return fts5IndexReturn(p); } /* @@ -203167,7 +240257,10 @@ static int sqlite3Fts5IndexOptimize(Fts5Index *p){ ** INSERT command. */ static int sqlite3Fts5IndexMerge(Fts5Index *p, int nMerge){ - Fts5Structure *pStruct = fts5StructureRead(p); + Fts5Structure *pStruct = 0; + + fts5IndexFlush(p); + pStruct = fts5StructureRead(p); if( pStruct ){ int nMin = p->pConfig->nUsermerge; fts5StructureInvalidate(p); @@ -203175,7 +240268,7 @@ static int sqlite3Fts5IndexMerge(Fts5Index *p, int nMerge){ Fts5Structure *pNew = fts5IndexOptimizeStruct(p, pStruct); fts5StructureRelease(pStruct); pStruct = pNew; - nMin = 2; + nMin = 1; nMerge = nMerge*-1; } if( pStruct && pStruct->nLevel ){ @@ -203190,7 +240283,7 @@ static int sqlite3Fts5IndexMerge(Fts5Index *p, int nMerge){ static void fts5AppendRowid( Fts5Index *p, - i64 iDelta, + u64 iDelta, Fts5Iter *pUnused, Fts5Buffer *pBuf ){ @@ -203200,16 +240293,18 @@ static void fts5AppendRowid( static void fts5AppendPoslist( Fts5Index *p, - i64 iDelta, + u64 iDelta, Fts5Iter *pMulti, Fts5Buffer *pBuf ){ int nData = pMulti->base.nData; + int nByte = nData + 9 + 9 + FTS5_DATA_ZERO_PADDING; assert( nData>0 ); - if( p->rc==SQLITE_OK && 0==fts5BufferGrow(&p->rc, pBuf, nData+9+9) ){ + if( p->rc==SQLITE_OK && 0==fts5BufferGrow(&p->rc, pBuf, nByte) ){ fts5BufferSafeAppendVarint(pBuf, iDelta); fts5BufferSafeAppendVarint(pBuf, nData*2); fts5BufferSafeAppendBlob(pBuf, pMulti->base.pData, nData); + memset(&pBuf->p[pBuf->n], 0, FTS5_DATA_ZERO_PADDING); } } @@ -203217,7 +240312,7 @@ static void fts5AppendPoslist( static void fts5DoclistIterNext(Fts5DoclistIter *pIter){ u8 *p = pIter->aPoslist + pIter->nSize + pIter->nPoslist; - assert( pIter->aPoslist ); + assert( pIter->aPoslist || (p==0 && pIter->aPoslist==0) ); if( p>=pIter->aEof ){ pIter->aPoslist = 0; }else{ @@ -203237,17 +240332,22 @@ static void fts5DoclistIterNext(Fts5DoclistIter *pIter){ } pIter->aPoslist = p; + if( &pIter->aPoslist[pIter->nPoslist]>pIter->aEof ){ + pIter->aPoslist = 0; + } } } static void fts5DoclistIterInit( - Fts5Buffer *pBuf, + Fts5Buffer *pBuf, Fts5DoclistIter *pIter ){ memset(pIter, 0, sizeof(*pIter)); - pIter->aPoslist = pBuf->p; - pIter->aEof = &pBuf->p[pBuf->n]; - fts5DoclistIterNext(pIter); + if( pBuf->n>0 ){ + pIter->aPoslist = pBuf->p; + pIter->aEof = &pBuf->p[pBuf->n]; + fts5DoclistIterNext(pIter); + } } #if 0 @@ -203268,10 +240368,10 @@ static void fts5MergeAppendDocid( } #endif -#define fts5MergeAppendDocid(pBuf, iLastRowid, iRowid) { \ - assert( (pBuf)->n!=0 || (iLastRowid)==0 ); \ - fts5BufferSafeAppendVarint((pBuf), (iRowid) - (iLastRowid)); \ - (iLastRowid) = (iRowid); \ +#define fts5MergeAppendDocid(pBuf, iLastRowid, iRowid) { \ + assert( (pBuf)->n!=0 || (iLastRowid)==0 ); \ + fts5BufferSafeAppendVarint((pBuf), (u64)(iRowid) - (u64)(iLastRowid)); \ + (iLastRowid) = (iRowid); \ } /* @@ -203301,16 +240401,20 @@ static void fts5NextRowid(Fts5Buffer *pBuf, int *piOff, i64 *piRowid){ static void fts5MergeRowidLists( Fts5Index *p, /* FTS5 backend object */ Fts5Buffer *p1, /* First list to merge */ - Fts5Buffer *p2 /* Second list to merge */ + int nBuf, /* Number of entries in apBuf[] */ + Fts5Buffer *aBuf /* Array of other lists to merge into p1 */ ){ int i1 = 0; int i2 = 0; i64 iRowid1 = 0; i64 iRowid2 = 0; i64 iOut = 0; - + Fts5Buffer *p2 = &aBuf[0]; Fts5Buffer out; + + (void)nBuf; memset(&out, 0, sizeof(out)); + assert( nBuf==1 ); sqlite3Fts5BufferSize(&p->rc, &out, p1->n + p2->n); if( p->rc ) return; @@ -203337,152 +240441,214 @@ static void fts5MergeRowidLists( fts5BufferFree(&out); } +typedef struct PrefixMerger PrefixMerger; +struct PrefixMerger { + Fts5DoclistIter iter; /* Doclist iterator */ + i64 iPos; /* For iterating through a position list */ + int iOff; + u8 *aPos; + PrefixMerger *pNext; /* Next in docid/poslist order */ +}; + +static void fts5PrefixMergerInsertByRowid( + PrefixMerger **ppHead, + PrefixMerger *p +){ + if( p->iter.aPoslist ){ + PrefixMerger **pp = ppHead; + while( *pp && p->iter.iRowid>(*pp)->iter.iRowid ){ + pp = &(*pp)->pNext; + } + p->pNext = *pp; + *pp = p; + } +} + +static void fts5PrefixMergerInsertByPosition( + PrefixMerger **ppHead, + PrefixMerger *p +){ + if( p->iPos>=0 ){ + PrefixMerger **pp = ppHead; + while( *pp && p->iPos>(*pp)->iPos ){ + pp = &(*pp)->pNext; + } + p->pNext = *pp; + *pp = p; + } +} + + /* -** Buffers p1 and p2 contain doclists. This function merges the content -** of the two doclists together and sets buffer p1 to the result before -** returning. -** -** If an error occurs, an error code is left in p->rc. If an error has -** already occurred, this function is a no-op. +** Array aBuf[] contains nBuf doclists. These are all merged in with the +** doclist in buffer p1. */ static void fts5MergePrefixLists( Fts5Index *p, /* FTS5 backend object */ Fts5Buffer *p1, /* First list to merge */ - Fts5Buffer *p2 /* Second list to merge */ + int nBuf, /* Number of buffers in array aBuf[] */ + Fts5Buffer *aBuf /* Other lists to merge in */ ){ - if( p2->n ){ - i64 iLastRowid = 0; - Fts5DoclistIter i1; - Fts5DoclistIter i2; - Fts5Buffer out = {0, 0, 0}; - Fts5Buffer tmp = {0, 0, 0}; +#define fts5PrefixMergerNextPosition(p) \ + sqlite3Fts5PoslistNext64((p)->aPos,(p)->iter.nPoslist,&(p)->iOff,&(p)->iPos) +#define FTS5_MERGE_NLIST 16 + PrefixMerger aMerger[FTS5_MERGE_NLIST]; + PrefixMerger *pHead = 0; + int i; + int nOut = 0; + Fts5Buffer out = {0, 0, 0}; + Fts5Buffer tmp = {0, 0, 0}; + i64 iLastRowid = 0; - /* The maximum size of the output is equal to the sum of the two - ** input sizes + 1 varint (9 bytes). The extra varint is because if the - ** first rowid in one input is a large negative number, and the first in - ** the other a non-negative number, the delta for the non-negative - ** number will be larger on disk than the literal integer value - ** was. */ - if( sqlite3Fts5BufferSize(&p->rc, &out, p1->n + p2->n + 9) ) return; - fts5DoclistIterInit(p1, &i1); - fts5DoclistIterInit(p2, &i2); - - while( 1 ){ - if( i1.iRowidrc, &tmp, i1.nPoslist + i2.nPoslist); - if( p->rc ) break; - - sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1); - sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2); - assert( iPos1>=0 && iPos2>=0 ); - - if( iPos1=0 && iPos2>=0 ){ - while( 1 ){ - if( iPos1=0 ){ - if( iPos1!=iPrev ){ - sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos1); - } - fts5BufferSafeAppendBlob(&tmp, &a1[iOff1], i1.nPoslist-iOff1); - }else{ - assert( iPos2>=0 && iPos2!=iPrev ); - sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, iPos2); - fts5BufferSafeAppendBlob(&tmp, &a2[iOff2], i2.nPoslist-iOff2); - } - - /* WRITEPOSLISTSIZE */ - fts5BufferSafeAppendVarint(&out, tmp.n * 2); - fts5BufferSafeAppendBlob(&out, tmp.p, tmp.n); - fts5DoclistIterNext(&i1); - fts5DoclistIterNext(&i2); - if( i1.aPoslist==0 || i2.aPoslist==0 ) break; - } - } - - if( i1.aPoslist ){ - fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid); - fts5BufferSafeAppendBlob(&out, i1.aPoslist, i1.aEof - i1.aPoslist); - } - else if( i2.aPoslist ){ - fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid); - fts5BufferSafeAppendBlob(&out, i2.aPoslist, i2.aEof - i2.aPoslist); - } - assert( out.n<=(p1->n+p2->n+9) ); - - fts5BufferSet(&p->rc, p1, out.n, out.p); - fts5BufferFree(&tmp); - fts5BufferFree(&out); + /* Initialize a doclist-iterator for each input buffer. Arrange them in + ** a linked-list starting at pHead in ascending order of rowid. Avoid + ** linking any iterators already at EOF into the linked list at all. */ + assert( nBuf+1<=(int)(sizeof(aMerger)/sizeof(aMerger[0])) ); + memset(aMerger, 0, sizeof(PrefixMerger)*(nBuf+1)); + pHead = &aMerger[nBuf]; + fts5DoclistIterInit(p1, &pHead->iter); + for(i=0; in + 9 + 10*nBuf; + + /* The maximum size of the output is equal to the sum of the + ** input sizes + 1 varint (9 bytes). The extra varint is because if the + ** first rowid in one input is a large negative number, and the first in + ** the other a non-negative number, the delta for the non-negative + ** number will be larger on disk than the literal integer value + ** was. + ** + ** Or, if the input position-lists are corrupt, then the output might + ** include up to (nBuf+1) extra 10-byte positions created by interpreting -1 + ** (the value PoslistNext64() uses for EOF) as a position and appending + ** it to the output. This can happen at most once for each input + ** position-list, hence (nBuf+1) 10 byte paddings. */ + if( sqlite3Fts5BufferSize(&p->rc, &out, nOut) ) return; + + while( pHead ){ + fts5MergeAppendDocid(&out, iLastRowid, pHead->iter.iRowid); + + if( pHead->pNext && iLastRowid==pHead->pNext->iter.iRowid ){ + /* Merge data from two or more poslists */ + i64 iPrev = 0; + int nTmp = FTS5_DATA_ZERO_PADDING; + int nMerge = 0; + PrefixMerger *pSave = pHead; + PrefixMerger *pThis = 0; + int nTail = 0; + + pHead = 0; + while( pSave && pSave->iter.iRowid==iLastRowid ){ + PrefixMerger *pNext = pSave->pNext; + pSave->iOff = 0; + pSave->iPos = 0; + pSave->aPos = &pSave->iter.aPoslist[pSave->iter.nSize]; + fts5PrefixMergerNextPosition(pSave); + nTmp += pSave->iter.nPoslist + 10; + nMerge++; + fts5PrefixMergerInsertByPosition(&pHead, pSave); + pSave = pNext; + } + + if( pHead==0 || pHead->pNext==0 ){ + p->rc = FTS5_CORRUPT; + break; + } + + /* See the earlier comment in this function for an explanation of why + ** corrupt input position lists might cause the output to consume + ** at most nMerge*10 bytes of unexpected space. */ + if( sqlite3Fts5BufferSize(&p->rc, &tmp, nTmp+nMerge*10) ){ + break; + } + fts5BufferZero(&tmp); + + pThis = pHead; + pHead = pThis->pNext; + sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, pThis->iPos); + fts5PrefixMergerNextPosition(pThis); + fts5PrefixMergerInsertByPosition(&pHead, pThis); + + while( pHead->pNext ){ + pThis = pHead; + if( pThis->iPos!=iPrev ){ + sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, pThis->iPos); + } + fts5PrefixMergerNextPosition(pThis); + pHead = pThis->pNext; + fts5PrefixMergerInsertByPosition(&pHead, pThis); + } + + if( pHead->iPos!=iPrev ){ + sqlite3Fts5PoslistSafeAppend(&tmp, &iPrev, pHead->iPos); + } + nTail = pHead->iter.nPoslist - pHead->iOff; + + /* WRITEPOSLISTSIZE */ + assert_nc( tmp.n+nTail<=nTmp ); + assert( tmp.n+nTail<=nTmp+nMerge*10 ); + if( tmp.n+nTail>nTmp-FTS5_DATA_ZERO_PADDING ){ + if( p->rc==SQLITE_OK ) p->rc = FTS5_CORRUPT; + break; + } + fts5BufferSafeAppendVarint(&out, (tmp.n+nTail) * 2); + fts5BufferSafeAppendBlob(&out, tmp.p, tmp.n); + if( nTail>0 ){ + fts5BufferSafeAppendBlob(&out, &pHead->aPos[pHead->iOff], nTail); + } + + pHead = pSave; + for(i=0; iiter.aPoslist && pX->iter.iRowid==iLastRowid ){ + fts5DoclistIterNext(&pX->iter); + fts5PrefixMergerInsertByRowid(&pHead, pX); + } + } + + }else{ + /* Copy poslist from pHead to output */ + PrefixMerger *pThis = pHead; + Fts5DoclistIter *pI = &pThis->iter; + fts5BufferSafeAppendBlob(&out, pI->aPoslist, pI->nPoslist+pI->nSize); + fts5DoclistIterNext(pI); + pHead = pThis->pNext; + fts5PrefixMergerInsertByRowid(&pHead, pThis); + } + } + + fts5BufferFree(p1); + fts5BufferFree(&tmp); + memset(&out.p[out.n], 0, FTS5_DATA_ZERO_PADDING); + *p1 = out; } static void fts5SetupPrefixIter( Fts5Index *p, /* Index to read from */ int bDesc, /* True for "ORDER BY rowid DESC" */ - const u8 *pToken, /* Buffer containing prefix to match */ + int iIdx, /* Index to scan for data */ + u8 *pToken, /* Buffer containing prefix to match */ int nToken, /* Size of buffer pToken in bytes */ Fts5Colset *pColset, /* Restrict matches to these columns */ Fts5Iter **ppIter /* OUT: New iterator */ ){ Fts5Structure *pStruct; Fts5Buffer *aBuf; - const int nBuf = 32; + int nBuf = 32; + int nMerge = 1; - void (*xMerge)(Fts5Index*, Fts5Buffer*, Fts5Buffer*); - void (*xAppend)(Fts5Index*, i64, Fts5Iter*, Fts5Buffer*); + void (*xMerge)(Fts5Index*, Fts5Buffer*, int, Fts5Buffer*); + void (*xAppend)(Fts5Index*, u64, Fts5Iter*, Fts5Buffer*); if( p->pConfig->eDetail==FTS5_DETAIL_NONE ){ xMerge = fts5MergeRowidLists; xAppend = fts5AppendRowid; }else{ + nMerge = FTS5_MERGE_NLIST-1; + nBuf = nMerge*8; /* Sufficient to merge (16^8)==(2^32) lists */ xMerge = fts5MergePrefixLists; xAppend = fts5AppendPoslist; } @@ -203491,8 +240657,8 @@ static void fts5SetupPrefixIter( pStruct = fts5StructureRead(p); if( aBuf && pStruct ){ - const int flags = FTS5INDEX_QUERY_SCAN - | FTS5INDEX_QUERY_SKIPEMPTY + const int flags = FTS5INDEX_QUERY_SCAN + | FTS5INDEX_QUERY_SKIPEMPTY | FTS5INDEX_QUERY_NOOUTPUT; int i; i64 iLastRowid = 0; @@ -203502,6 +240668,27 @@ static void fts5SetupPrefixIter( int bNewTerm = 1; memset(&doclist, 0, sizeof(doclist)); + if( iIdx!=0 ){ + int dummy = 0; + const int f2 = FTS5INDEX_QUERY_SKIPEMPTY|FTS5INDEX_QUERY_NOOUTPUT; + pToken[0] = FTS5_MAIN_PREFIX; + fts5MultiIterNew(p, pStruct, f2, pColset, pToken, nToken, -1, 0, &p1); + fts5IterSetOutputCb(&p->rc, p1); + for(; + fts5MultiIterEof(p, p1)==0; + fts5MultiIterNext2(p, p1, &dummy) + ){ + Fts5SegIter *pSeg = &p1->aSeg[ p1->aFirst[1].iFirst ]; + p1->xSetOutputs(p1, pSeg); + if( p1->base.nData ){ + xAppend(p, (u64)p1->base.iRowid-(u64)iLastRowid, p1, &doclist); + iLastRowid = p1->base.iRowid; + } + } + fts5MultiIterFree(p1); + } + + pToken[0] = FTS5_MAIN_PREFIX + iIdx; fts5MultiIterNew(p, pStruct, flags, pColset, pToken, nToken, -1, 0, &p1); fts5IterSetOutputCb(&p->rc, p1); for( /* no-op */ ; @@ -203522,31 +240709,43 @@ static void fts5SetupPrefixIter( if( p1->base.iRowid<=iLastRowid && doclist.n>0 ){ for(i=0; p->rc==SQLITE_OK && doclist.n; i++){ - assert( ibase.iRowid-iLastRowid, p1, &doclist); + xAppend(p, (u64)p1->base.iRowid-(u64)iLastRowid, p1, &doclist); iLastRowid = p1->base.iRowid; } - for(i=0; irc==SQLITE_OK ){ - xMerge(p, &doclist, &aBuf[i]); + xMerge(p, &doclist, nMerge, &aBuf[i]); + } + for(iFree=i; iFreep = (u8*)&pData[1]; pData->nn = pData->szLeaf = doclist.n; @@ -203574,15 +240773,18 @@ static int sqlite3Fts5IndexBeginWrite(Fts5Index *p, int bDelete, i64 iRowid){ } /* Flush the hash table to disk if required */ - if( iRowidiWriteRowid + if( iRowidiWriteRowid || (iRowid==p->iWriteRowid && p->bDelete==0) - || (p->nPendingData > p->pConfig->nHashSize) + || (p->nPendingData > p->pConfig->nHashSize) ){ fts5IndexFlush(p); } p->iWriteRowid = iRowid; p->bDelete = bDelete; + if( bDelete==0 ){ + p->nPendingRow++; + } return fts5IndexReturn(p); } @@ -203592,18 +240794,18 @@ static int sqlite3Fts5IndexBeginWrite(Fts5Index *p, int bDelete, i64 iRowid){ static int sqlite3Fts5IndexSync(Fts5Index *p){ assert( p->rc==SQLITE_OK ); fts5IndexFlush(p); - fts5CloseReader(p); + sqlite3Fts5IndexCloseReader(p); return fts5IndexReturn(p); } /* ** Discard any data stored in the in-memory hash tables. Do not write it ** to the database. Additionally, assume that the contents of the %_data -** table may have changed on disk. So any in-memory caches of %_data +** table may have changed on disk. So any in-memory caches of %_data ** records must be invalidated. */ static int sqlite3Fts5IndexRollback(Fts5Index *p){ - fts5CloseReader(p); + sqlite3Fts5IndexCloseReader(p); fts5IndexDiscardData(p); fts5StructureInvalidate(p); /* assert( p->rc==SQLITE_OK ); */ @@ -203618,7 +240820,11 @@ static int sqlite3Fts5IndexRollback(Fts5Index *p){ static int sqlite3Fts5IndexReinit(Fts5Index *p){ Fts5Structure s; fts5StructureInvalidate(p); + fts5IndexDiscardData(p); memset(&s, 0, sizeof(Fts5Structure)); + if( p->pConfig->bContentlessDelete ){ + s.nOriginCntr = 1; + } fts5DataWrite(p, FTS5_AVERAGES_ROWID, (const u8*)"", 0); fts5StructureWrite(p, &s); return fts5IndexReturn(p); @@ -203632,8 +240838,8 @@ static int sqlite3Fts5IndexReinit(Fts5Index *p){ ** Otherwise, set *pp to NULL and return an SQLite error code. */ static int sqlite3Fts5IndexOpen( - Fts5Config *pConfig, - int bCreate, + Fts5Config *pConfig, + int bCreate, Fts5Index **pp, char **pzErr ){ @@ -203650,8 +240856,8 @@ static int sqlite3Fts5IndexOpen( pConfig, "data", "id INTEGER PRIMARY KEY, block BLOB", 0, pzErr ); if( rc==SQLITE_OK ){ - rc = sqlite3Fts5CreateTable(pConfig, "idx", - "segid, term, pgno, PRIMARY KEY(segid, term)", + rc = sqlite3Fts5CreateTable(pConfig, "idx", + "segid, term, pgno, PRIMARY KEY(segid, term)", 1, pzErr ); } @@ -203683,6 +240889,7 @@ static int sqlite3Fts5IndexClose(Fts5Index *p){ sqlite3_finalize(p->pIdxDeleter); sqlite3_finalize(p->pIdxSelect); sqlite3_finalize(p->pDataVersion); + sqlite3_finalize(p->pDeleteFromIdx); sqlite3Fts5HashFree(p->pHash); sqlite3_free(p->zDataTbl); sqlite3_free(p); @@ -203691,13 +240898,13 @@ static int sqlite3Fts5IndexClose(Fts5Index *p){ } /* -** Argument p points to a buffer containing utf-8 text that is n bytes in +** Argument p points to a buffer containing utf-8 text that is n bytes in ** size. Return the number of bytes in the nChar character prefix of the ** buffer, or 0 if there are less than nChar characters in total. */ static int sqlite3Fts5IndexCharlenToBytelen( - const char *p, - int nByte, + const char *p, + int nByte, int nChar ){ int n = 0; @@ -203705,7 +240912,14 @@ static int sqlite3Fts5IndexCharlenToBytelen( for(i=0; i=nByte ) return 0; /* Input contains fewer than nChar chars */ if( (unsigned char)p[n++]>=0xc0 ){ - while( (p[n] & 0xc0)==0x80 ) n++; + if( n>=nByte ) return 0; + while( (p[n] & 0xc0)==0x80 ){ + n++; + if( n>=nByte ){ + if( i+1==nChar ) break; + return 0; + } + } } } return n; @@ -203716,7 +240930,7 @@ static int sqlite3Fts5IndexCharlenToBytelen( ** unicode characters in the string. */ static int fts5IndexCharlen(const char *pIn, int nIn){ - int nChar = 0; + int nChar = 0; int i = 0; while( i=0xc0 ){ @@ -203728,7 +240942,7 @@ static int fts5IndexCharlen(const char *pIn, int nIn){ } /* -** Insert or remove data to or from the index. Each time a document is +** Insert or remove data to or from the index. Each time a document is ** added to or removed from the index, this function is called one or more ** times. ** @@ -203759,7 +240973,7 @@ static int sqlite3Fts5IndexWrite( const int nChar = pConfig->aPrefix[i]; int nByte = sqlite3Fts5IndexCharlenToBytelen(pToken, nToken, nChar); if( nByte ){ - rc = sqlite3Fts5HashWrite(p->pHash, + rc = sqlite3Fts5HashWrite(p->pHash, p->iWriteRowid, iCol, iPos, (char)(FTS5_MAIN_PREFIX+i+1), pToken, nByte ); @@ -203770,7 +240984,7 @@ static int sqlite3Fts5IndexWrite( } /* -** Open a new iterator to iterate though all rowid that match the +** Open a new iterator to iterate though all rowid that match the ** specified token or token prefix. */ static int sqlite3Fts5IndexQuery( @@ -203789,7 +241003,8 @@ static int sqlite3Fts5IndexQuery( if( sqlite3Fts5BufferSize(&p->rc, &buf, nToken+1)==0 ){ int iIdx = 0; /* Index to search */ - if( nToken ) memcpy(&buf.p[1], pToken, nToken); + int iPrefixIdx = 0; /* +1 prefix index */ + if( nToken>0 ) memcpy(&buf.p[1], pToken, nToken); /* Figure out which index to search and set iIdx accordingly. If this ** is a prefix query for which there is no prefix index, set iIdx to @@ -203797,9 +241012,9 @@ static int sqlite3Fts5IndexQuery( ** satisfied by scanning multiple terms in the main index. ** ** If the QUERY_TEST_NOIDX flag was specified, then this must be a - ** prefix-query. Instead of using a prefix-index (if one exists), + ** prefix-query. Instead of using a prefix-index (if one exists), ** evaluate the prefix query using the main FTS index. This is used - ** for internal sanity checking by the integrity-check in debug + ** for internal sanity checking by the integrity-check in debug ** mode only. */ #ifdef SQLITE_DEBUG if( pConfig->bPrefixIndex==0 || (flags & FTS5INDEX_QUERY_TEST_NOIDX) ){ @@ -203810,7 +241025,9 @@ static int sqlite3Fts5IndexQuery( if( flags & FTS5INDEX_QUERY_PREFIX ){ int nChar = fts5IndexCharlen(pToken, nToken); for(iIdx=1; iIdx<=pConfig->nPrefix; iIdx++){ - if( pConfig->aPrefix[iIdx-1]==nChar ) break; + int nIdxChar = pConfig->aPrefix[iIdx-1]; + if( nIdxChar==nChar ) break; + if( nIdxChar==nChar+1 ) iPrefixIdx = iIdx; } } @@ -203819,7 +241036,7 @@ static int sqlite3Fts5IndexQuery( Fts5Structure *pStruct = fts5StructureRead(p); buf.p[0] = (u8)(FTS5_MAIN_PREFIX + iIdx); if( pStruct ){ - fts5MultiIterNew(p, pStruct, flags | FTS5INDEX_QUERY_SKIPEMPTY, + fts5MultiIterNew(p, pStruct, flags | FTS5INDEX_QUERY_SKIPEMPTY, pColset, buf.p, nToken+1, -1, 0, &pRet ); fts5StructureRelease(pStruct); @@ -203827,23 +241044,26 @@ static int sqlite3Fts5IndexQuery( }else{ /* Scan multiple terms in the main index */ int bDesc = (flags & FTS5INDEX_QUERY_DESC)!=0; - buf.p[0] = FTS5_MAIN_PREFIX; - fts5SetupPrefixIter(p, bDesc, buf.p, nToken+1, pColset, &pRet); - assert( p->rc!=SQLITE_OK || pRet->pColset==0 ); - fts5IterSetOutputCb(&p->rc, pRet); - if( p->rc==SQLITE_OK ){ - Fts5SegIter *pSeg = &pRet->aSeg[pRet->aFirst[1].iFirst]; - if( pSeg->pLeaf ) pRet->xSetOutputs(pRet, pSeg); + fts5SetupPrefixIter(p, bDesc, iPrefixIdx, buf.p, nToken+1, pColset,&pRet); + if( pRet==0 ){ + assert( p->rc!=SQLITE_OK ); + }else{ + assert( pRet->pColset==0 ); + fts5IterSetOutputCb(&p->rc, pRet); + if( p->rc==SQLITE_OK ){ + Fts5SegIter *pSeg = &pRet->aSeg[pRet->aFirst[1].iFirst]; + if( pSeg->pLeaf ) pRet->xSetOutputs(pRet, pSeg); + } } } if( p->rc ){ sqlite3Fts5IterClose((Fts5IndexIter*)pRet); pRet = 0; - fts5CloseReader(p); + sqlite3Fts5IndexCloseReader(p); } - *ppIter = &pRet->base; + *ppIter = (Fts5IndexIter*)pRet; sqlite3Fts5BufferFree(&buf); } return fts5IndexReturn(p); @@ -203853,7 +241073,7 @@ static int sqlite3Fts5IndexQuery( ** Return true if the iterator passed as the only argument is at EOF. */ /* -** Move to the next matching rowid. +** Move to the next matching rowid. */ static int sqlite3Fts5IterNext(Fts5IndexIter *pIndexIter){ Fts5Iter *pIter = (Fts5Iter*)pIndexIter; @@ -203901,8 +241121,9 @@ static int sqlite3Fts5IterNextFrom(Fts5IndexIter *pIndexIter, i64 iMatch){ static const char *sqlite3Fts5IterTerm(Fts5IndexIter *pIndexIter, int *pn){ int n; const char *z = (const char*)fts5MultiIterTerm((Fts5Iter*)pIndexIter, &n); + assert_nc( z || n<=1 ); *pn = n-1; - return &z[1]; + return (z ? &z[1] : 0); } /* @@ -203913,12 +241134,12 @@ static void sqlite3Fts5IterClose(Fts5IndexIter *pIndexIter){ Fts5Iter *pIter = (Fts5Iter*)pIndexIter; Fts5Index *pIndex = pIter->pIndex; fts5MultiIterFree(pIter); - fts5CloseReader(pIndex); + sqlite3Fts5IndexCloseReader(pIndex); } } /* -** Read and decode the "averages" record from the database. +** Read and decode the "averages" record from the database. ** ** Parameter anSize must point to an array of size nCol, where nCol is ** the number of user defined columns in the FTS table. @@ -203944,7 +241165,7 @@ static int sqlite3Fts5IndexGetAverages(Fts5Index *p, i64 *pnRow, i64 *anSize){ } /* -** Replace the current "averages" record with the contents of the buffer +** Replace the current "averages" record with the contents of the buffer ** supplied as the second argument. */ static int sqlite3Fts5IndexSetAverages(Fts5Index *p, const u8 *pData, int nData){ @@ -203962,7 +241183,7 @@ static int sqlite3Fts5IndexReads(Fts5Index *p){ } /* -** Set the 32-bit cookie value stored at the start of all structure +** Set the 32-bit cookie value stored at the start of all structure ** records to the value passed as the second argument. ** ** Return SQLITE_OK if successful, or an SQLite error code if an error @@ -203977,7 +241198,7 @@ static int sqlite3Fts5IndexSetCookie(Fts5Index *p, int iNew){ assert( p->rc==SQLITE_OK ); sqlite3Fts5Put32(aCookie, iNew); - rc = sqlite3_blob_open(pConfig->db, pConfig->zDb, p->zDataTbl, + rc = sqlite3_blob_open(pConfig->db, pConfig->zDb, p->zDataTbl, "block", FTS5_STRUCTURE_ROWID, 1, &pBlob ); if( rc==SQLITE_OK ){ @@ -203995,10 +241216,351 @@ static int sqlite3Fts5IndexLoadConfig(Fts5Index *p){ return fts5IndexReturn(p); } +/* +** Retrieve the origin value that will be used for the segment currently +** being accumulated in the in-memory hash table when it is flushed to +** disk. If successful, SQLITE_OK is returned and (*piOrigin) set to +** the queried value. Or, if an error occurs, an error code is returned +** and the final value of (*piOrigin) is undefined. +*/ +static int sqlite3Fts5IndexGetOrigin(Fts5Index *p, i64 *piOrigin){ + Fts5Structure *pStruct; + pStruct = fts5StructureRead(p); + if( pStruct ){ + *piOrigin = pStruct->nOriginCntr; + fts5StructureRelease(pStruct); + } + return fts5IndexReturn(p); +} + +/* +** Buffer pPg contains a page of a tombstone hash table - one of nPg pages +** associated with the same segment. This function adds rowid iRowid to +** the hash table. The caller is required to guarantee that there is at +** least one free slot on the page. +** +** If parameter bForce is false and the hash table is deemed to be full +** (more than half of the slots are occupied), then non-zero is returned +** and iRowid not inserted. Or, if bForce is true or if the hash table page +** is not full, iRowid is inserted and zero returned. +*/ +static int fts5IndexTombstoneAddToPage( + Fts5Data *pPg, + int bForce, + int nPg, + u64 iRowid +){ + const int szKey = TOMBSTONE_KEYSIZE(pPg); + const int nSlot = TOMBSTONE_NSLOT(pPg); + const int nElem = fts5GetU32(&pPg->p[4]); + int iSlot = (iRowid / nPg) % nSlot; + int nCollide = nSlot; + + if( szKey==4 && iRowid>0xFFFFFFFF ) return 2; + if( iRowid==0 ){ + pPg->p[1] = 0x01; + return 0; + } + + if( bForce==0 && nElem>=(nSlot/2) ){ + return 1; + } + + fts5PutU32(&pPg->p[4], nElem+1); + if( szKey==4 ){ + u32 *aSlot = (u32*)&pPg->p[8]; + while( aSlot[iSlot] ){ + iSlot = (iSlot + 1) % nSlot; + if( nCollide--==0 ) return 0; + } + fts5PutU32((u8*)&aSlot[iSlot], (u32)iRowid); + }else{ + u64 *aSlot = (u64*)&pPg->p[8]; + while( aSlot[iSlot] ){ + iSlot = (iSlot + 1) % nSlot; + if( nCollide--==0 ) return 0; + } + fts5PutU64((u8*)&aSlot[iSlot], iRowid); + } + + return 0; +} + +/* +** This function attempts to build a new hash containing all the keys +** currently in the tombstone hash table for segment pSeg. The new +** hash will be stored in the nOut buffers passed in array apOut[]. +** All pages of the new hash use key-size szKey (4 or 8). +** +** Return 0 if the hash is successfully rebuilt into the nOut pages. +** Or non-zero if it is not (because one page became overfull). In this +** case the caller should retry with a larger nOut parameter. +** +** Parameter pData1 is page iPg1 of the hash table being rebuilt. +*/ +static int fts5IndexTombstoneRehash( + Fts5Index *p, + Fts5StructureSegment *pSeg, /* Segment to rebuild hash of */ + Fts5Data *pData1, /* One page of current hash - or NULL */ + int iPg1, /* Which page of the current hash is pData1 */ + int szKey, /* 4 or 8, the keysize */ + int nOut, /* Number of output pages */ + Fts5Data **apOut /* Array of output hash pages */ +){ + int ii; + int res = 0; + + /* Initialize the headers of all the output pages */ + for(ii=0; iip[0] = szKey; + fts5PutU32(&apOut[ii]->p[4], 0); + } + + /* Loop through the current pages of the hash table. */ + for(ii=0; res==0 && iinPgTombstone; ii++){ + Fts5Data *pData = 0; /* Page ii of the current hash table */ + Fts5Data *pFree = 0; /* Free this at the end of the loop */ + + if( iPg1==ii ){ + pData = pData1; + }else{ + pFree = pData = fts5DataRead(p, FTS5_TOMBSTONE_ROWID(pSeg->iSegid, ii)); + } + + if( pData ){ + int szKeyIn = TOMBSTONE_KEYSIZE(pData); + int nSlotIn = (pData->nn - 8) / szKeyIn; + int iIn; + for(iIn=0; iInp[8]; + if( aSlot[iIn] ) iVal = fts5GetU32((u8*)&aSlot[iIn]); + }else{ + u64 *aSlot = (u64*)&pData->p[8]; + if( aSlot[iIn] ) iVal = fts5GetU64((u8*)&aSlot[iIn]); + } + + /* If iVal is not 0 at this point, insert it into the new hash table */ + if( iVal ){ + Fts5Data *pPg = apOut[(iVal % nOut)]; + res = fts5IndexTombstoneAddToPage(pPg, 0, nOut, iVal); + if( res ) break; + } + } + + /* If this is page 0 of the old hash, copy the rowid-0-flag from the + ** old hash to the new. */ + if( ii==0 ){ + apOut[0]->p[1] = pData->p[1]; + } + } + fts5DataRelease(pFree); + } + + return res; +} + +/* +** This is called to rebuild the hash table belonging to segment pSeg. +** If parameter pData1 is not NULL, then one page of the existing hash table +** has already been loaded - pData1, which is page iPg1. The key-size for +** the new hash table is szKey (4 or 8). +** +** If successful, the new hash table is not written to disk. Instead, +** output parameter (*pnOut) is set to the number of pages in the new +** hash table, and (*papOut) to point to an array of buffers containing +** the new page data. +** +** If an error occurs, an error code is left in the Fts5Index object and +** both output parameters set to 0 before returning. +*/ +static void fts5IndexTombstoneRebuild( + Fts5Index *p, + Fts5StructureSegment *pSeg, /* Segment to rebuild hash of */ + Fts5Data *pData1, /* One page of current hash - or NULL */ + int iPg1, /* Which page of the current hash is pData1 */ + int szKey, /* 4 or 8, the keysize */ + int *pnOut, /* OUT: Number of output pages */ + Fts5Data ***papOut /* OUT: Output hash pages */ +){ + const int MINSLOT = 32; + int nSlotPerPage = MAX(MINSLOT, (p->pConfig->pgsz - 8) / szKey); + int nSlot = 0; /* Number of slots in each output page */ + int nOut = 0; + + /* Figure out how many output pages (nOut) and how many slots per + ** page (nSlot). There are three possibilities: + ** + ** 1. The hash table does not yet exist. In this case the new hash + ** table will consist of a single page with MINSLOT slots. + ** + ** 2. The hash table exists but is currently a single page. In this + ** case an attempt is made to grow the page to accommodate the new + ** entry. The page is allowed to grow up to nSlotPerPage (see above) + ** slots. + ** + ** 3. The hash table already consists of more than one page, or of + ** a single page already so large that it cannot be grown. In this + ** case the new hash consists of (nPg*2+1) pages of nSlotPerPage + ** slots each, where nPg is the current number of pages in the + ** hash table. + */ + if( pSeg->nPgTombstone==0 ){ + /* Case 1. */ + nOut = 1; + nSlot = MINSLOT; + }else if( pSeg->nPgTombstone==1 ){ + /* Case 2. */ + int nElem = (int)fts5GetU32(&pData1->p[4]); + assert( pData1 && iPg1==0 ); + nOut = 1; + nSlot = MAX(nElem*4, MINSLOT); + if( nSlot>nSlotPerPage ) nOut = 0; + } + if( nOut==0 ){ + /* Case 3. */ + nOut = (pSeg->nPgTombstone * 2 + 1); + nSlot = nSlotPerPage; + } + + /* Allocate the required array and output pages */ + while( 1 ){ + int res = 0; + int ii = 0; + int szPage = 0; + Fts5Data **apOut = 0; + + /* Allocate space for the new hash table */ + assert( nSlot>=MINSLOT ); + apOut = (Fts5Data**)sqlite3Fts5MallocZero(&p->rc, sizeof(Fts5Data*) * nOut); + szPage = 8 + nSlot*szKey; + for(ii=0; iirc, + sizeof(Fts5Data)+szPage + ); + if( pNew ){ + pNew->nn = szPage; + pNew->p = (u8*)&pNew[1]; + apOut[ii] = pNew; + } + } + + /* Rebuild the hash table. */ + if( p->rc==SQLITE_OK ){ + res = fts5IndexTombstoneRehash(p, pSeg, pData1, iPg1, szKey, nOut, apOut); + } + if( res==0 ){ + if( p->rc ){ + fts5IndexFreeArray(apOut, nOut); + apOut = 0; + nOut = 0; + } + *pnOut = nOut; + *papOut = apOut; + break; + } + + /* If control flows to here, it was not possible to rebuild the hash + ** table. Free all buffers and then try again with more pages. */ + assert( p->rc==SQLITE_OK ); + fts5IndexFreeArray(apOut, nOut); + nSlot = nSlotPerPage; + nOut = nOut*2 + 1; + } +} + + +/* +** Add a tombstone for rowid iRowid to segment pSeg. +*/ +static void fts5IndexTombstoneAdd( + Fts5Index *p, + Fts5StructureSegment *pSeg, + u64 iRowid +){ + Fts5Data *pPg = 0; + int iPg = -1; + int szKey = 0; + int nHash = 0; + Fts5Data **apHash = 0; + + p->nContentlessDelete++; + + if( pSeg->nPgTombstone>0 ){ + iPg = iRowid % pSeg->nPgTombstone; + pPg = fts5DataRead(p, FTS5_TOMBSTONE_ROWID(pSeg->iSegid,iPg)); + if( pPg==0 ){ + assert( p->rc!=SQLITE_OK ); + return; + } + + if( 0==fts5IndexTombstoneAddToPage(pPg, 0, pSeg->nPgTombstone, iRowid) ){ + fts5DataWrite(p, FTS5_TOMBSTONE_ROWID(pSeg->iSegid,iPg), pPg->p, pPg->nn); + fts5DataRelease(pPg); + return; + } + } + + /* Have to rebuild the hash table. First figure out the key-size (4 or 8). */ + szKey = pPg ? TOMBSTONE_KEYSIZE(pPg) : 4; + if( iRowid>0xFFFFFFFF ) szKey = 8; + + /* Rebuild the hash table */ + fts5IndexTombstoneRebuild(p, pSeg, pPg, iPg, szKey, &nHash, &apHash); + assert( p->rc==SQLITE_OK || (nHash==0 && apHash==0) ); + + /* If all has succeeded, write the new rowid into one of the new hash + ** table pages, then write them all out to disk. */ + if( nHash ){ + int ii = 0; + fts5IndexTombstoneAddToPage(apHash[iRowid % nHash], 1, nHash, iRowid); + for(ii=0; iiiSegid, ii); + fts5DataWrite(p, iTombstoneRowid, apHash[ii]->p, apHash[ii]->nn); + } + pSeg->nPgTombstone = nHash; + fts5StructureWrite(p, p->pStruct); + } + + fts5DataRelease(pPg); + fts5IndexFreeArray(apHash, nHash); +} + +/* +** Add iRowid to the tombstone list of the segment or segments that contain +** rows from origin iOrigin. Return SQLITE_OK if successful, or an SQLite +** error code otherwise. +*/ +static int sqlite3Fts5IndexContentlessDelete(Fts5Index *p, i64 iOrigin, i64 iRowid){ + Fts5Structure *pStruct; + pStruct = fts5StructureRead(p); + if( pStruct ){ + int bFound = 0; /* True after pSeg->nEntryTombstone incr. */ + int iLvl; + for(iLvl=pStruct->nLevel-1; iLvl>=0; iLvl--){ + int iSeg; + for(iSeg=pStruct->aLevel[iLvl].nSeg-1; iSeg>=0; iSeg--){ + Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg]; + if( pSeg->iOrigin1<=(u64)iOrigin && pSeg->iOrigin2>=(u64)iOrigin ){ + if( bFound==0 ){ + pSeg->nEntryTombstone++; + bFound = 1; + } + fts5IndexTombstoneAdd(p, pSeg, iRowid); + } + } + } + fts5StructureRelease(pStruct); + } + return fts5IndexReturn(p); +} /************************************************************************* ************************************************************************** -** Below this point is the implementation of the integrity-check +** Below this point is the implementation of the integrity-check ** functionality. */ @@ -204006,9 +241568,9 @@ static int sqlite3Fts5IndexLoadConfig(Fts5Index *p){ ** Return a simple checksum value based on the arguments. */ static u64 sqlite3Fts5IndexEntryCksum( - i64 iRowid, - int iCol, - int iPos, + i64 iRowid, + int iCol, + int iPos, int iIdx, const char *pTerm, int nTerm @@ -204024,15 +241586,15 @@ static u64 sqlite3Fts5IndexEntryCksum( #ifdef SQLITE_DEBUG /* -** This function is purely an internal test. It does not contribute to +** This function is purely an internal test. It does not contribute to ** FTS functionality, or even the integrity-check, in any way. ** -** Instead, it tests that the same set of pgno/rowid combinations are +** Instead, it tests that the same set of pgno/rowid combinations are ** visited regardless of whether the doclist-index identified by parameters ** iSegid/iLeaf is iterated in forwards or reverse order. */ static void fts5TestDlidxReverse( - Fts5Index *p, + Fts5Index *p, int iSegid, /* Segment id to load from */ int iLeaf /* Load doclist-index for this leaf */ ){ @@ -204080,7 +241642,7 @@ static int fts5QueryCksum( Fts5IndexIter *pIter = 0; int rc = sqlite3Fts5IndexQuery(p, z, n, flags, 0, &pIter); - while( rc==SQLITE_OK && 0==sqlite3Fts5IterEof(pIter) ){ + while( rc==SQLITE_OK && ALWAYS(pIter!=0) && 0==sqlite3Fts5IterEof(pIter) ){ i64 rowid = pIter->iRowid; if( eDetail==FTS5_DETAIL_NONE ){ @@ -204106,13 +241668,44 @@ static int fts5QueryCksum( return rc; } +/* +** Check if buffer z[], size n bytes, contains as series of valid utf-8 +** encoded codepoints. If so, return 0. Otherwise, if the buffer does not +** contain valid utf-8, return non-zero. +*/ +static int fts5TestUtf8(const char *z, int n){ + int i = 0; + assert_nc( n>0 ); + while( i=n || (z[i+1] & 0xC0)!=0x80 ) return 1; + i += 2; + }else + if( (z[i] & 0xF0)==0xE0 ){ + if( i+2>=n || (z[i+1] & 0xC0)!=0x80 || (z[i+2] & 0xC0)!=0x80 ) return 1; + i += 3; + }else + if( (z[i] & 0xF8)==0xF0 ){ + if( i+3>=n || (z[i+1] & 0xC0)!=0x80 || (z[i+2] & 0xC0)!=0x80 ) return 1; + if( (z[i+2] & 0xC0)!=0x80 ) return 1; + i += 3; + }else{ + return 1; + } + } + + return 0; +} /* -** This function is also purely an internal test. It does not contribute to +** This function is also purely an internal test. It does not contribute to ** FTS functionality, or even the integrity-check, in any way. */ static void fts5TestTerm( - Fts5Index *p, + Fts5Index *p, Fts5Buffer *pPrev, /* Previous term */ const char *z, int n, /* Possibly new term to test */ u64 expected, @@ -204141,13 +241734,19 @@ static void fts5TestTerm( if( rc==SQLITE_OK && ck1!=ck2 ) rc = FTS5_CORRUPT; /* If this is a prefix query, check that the results returned if the - ** the index is disabled are the same. In both ASC and DESC order. + ** the index is disabled are the same. In both ASC and DESC order. ** ** This check may only be performed if the hash table is empty. This ** is because the hash table only supports a single scan query at ** a time, and the multi-iter loop from which this function is called - ** is already performing such a scan. */ - if( p->nPendingData==0 ){ + ** is already performing such a scan. + ** + ** Also only do this if buffer zTerm contains nTerm bytes of valid + ** utf-8. Otherwise, the last part of the buffer contents might contain + ** a non-utf-8 sequence that happens to be a prefix of a valid utf-8 + ** character stored in the main fts index, which will cause the + ** test to fail. */ + if( p->nPendingData==0 && 0==fts5TestUtf8(zTerm, nTerm) ){ if( iIdx>0 && rc==SQLITE_OK ){ int f = flags|FTS5INDEX_QUERY_TEST_NOIDX; ck2 = 0; @@ -204172,7 +241771,7 @@ static void fts5TestTerm( } p->rc = rc; } - + #else # define fts5TestDlidxReverse(x,y,z) # define fts5TestTerm(u,v,w,x,y,z) @@ -204262,6 +241861,7 @@ static void fts5IndexIntegrityCheckSegment( Fts5StructureSegment *pSeg /* Segment to check internal consistency */ ){ Fts5Config *pConfig = p->pConfig; + int bSecureDelete = (pConfig->iVersion==FTS5_CURRENT_VERSION_SECUREDELETE); sqlite3_stmt *pStmt = 0; int rc2; int iIdxPrevLeaf = pSeg->pgnoFirst-1; @@ -204270,7 +241870,8 @@ static void fts5IndexIntegrityCheckSegment( if( pSeg->pgnoFirst==0 ) return; fts5IndexPrepareStmt(p, &pStmt, sqlite3_mprintf( - "SELECT segid, term, (pgno>>1), (pgno&1) FROM %Q.'%q_idx' WHERE segid=%d", + "SELECT segid, term, (pgno>>1), (pgno&1) FROM %Q.'%q_idx' WHERE segid=%d " + "ORDER BY 1, 2", pConfig->zDb, pConfig->zName, pSeg->iSegid )); @@ -204279,12 +241880,12 @@ static void fts5IndexIntegrityCheckSegment( i64 iRow; /* Rowid for this leaf */ Fts5Data *pLeaf; /* Data for this leaf */ + const char *zIdxTerm = (const char*)sqlite3_column_blob(pStmt, 1); int nIdxTerm = sqlite3_column_bytes(pStmt, 1); - const char *zIdxTerm = (const char*)sqlite3_column_text(pStmt, 1); int iIdxLeaf = sqlite3_column_int(pStmt, 2); int bIdxDlidx = sqlite3_column_int(pStmt, 3); - /* If the leaf in question has already been trimmed from the segment, + /* If the leaf in question has already been trimmed from the segment, ** ignore this b-tree entry. Otherwise, load it into memory. */ if( iIdxLeafpgnoFirst ) continue; iRow = FTS5_SEGMENT_ROWID(pSeg->iSegid, iIdxLeaf); @@ -204296,7 +241897,19 @@ static void fts5IndexIntegrityCheckSegment( ** is also a rowid pointer within the leaf page header, it points to a ** location before the term. */ if( pLeaf->nn<=pLeaf->szLeaf ){ - p->rc = FTS5_CORRUPT; + + if( nIdxTerm==0 + && pConfig->iVersion==FTS5_CURRENT_VERSION_SECUREDELETE + && pLeaf->nn==pLeaf->szLeaf + && pLeaf->nn==4 + ){ + /* special case - the very first page in a segment keeps its %_idx + ** entry even if all the terms are removed from it by secure-delete + ** operations. */ + }else{ + p->rc = FTS5_CORRUPT; + } + }else{ int iOff; /* Offset of first term on leaf */ int iRowidOff; /* Offset of first rowid on leaf */ @@ -204305,11 +241918,11 @@ static void fts5IndexIntegrityCheckSegment( iOff = fts5LeafFirstTermOff(pLeaf); iRowidOff = fts5LeafFirstRowidOff(pLeaf); - if( iRowidOff>=iOff ){ + if( iRowidOff>=iOff || iOff>=pLeaf->szLeaf ){ p->rc = FTS5_CORRUPT; }else{ iOff += fts5GetVarint32(&pLeaf->p[iOff], nTerm); - res = memcmp(&pLeaf->p[iOff], zIdxTerm, MIN(nTerm, nIdxTerm)); + res = fts5Memcmp(&pLeaf->p[iOff], zIdxTerm, MIN(nTerm, nIdxTerm)); if( res==0 ) res = nTerm - nIdxTerm; if( res<0 ) p->rc = FTS5_CORRUPT; } @@ -204360,9 +241973,12 @@ static void fts5IndexIntegrityCheckSegment( ASSERT_SZLEAF_OK(pLeaf); if( iRowidOff>=pLeaf->szLeaf ){ p->rc = FTS5_CORRUPT; - }else{ + }else if( bSecureDelete==0 || iRowidOff>0 ){ + i64 iDlRowid = fts5DlidxIterRowid(pDlidx); fts5GetVarint(&pLeaf->p[iRowidOff], (u64*)&iRowid); - if( iRowid!=fts5DlidxIterRowid(pDlidx) ) p->rc = FTS5_CORRUPT; + if( iRowidrc = FTS5_CORRUPT; + } } fts5DataRelease(pLeaf); } @@ -204392,7 +242008,7 @@ static void fts5IndexIntegrityCheckSegment( /* -** Run internal checks to ensure that the FTS index (a) is internally +** Run internal checks to ensure that the FTS index (a) is internally ** consistent and (b) contains entries for which the XOR of the checksums ** as calculated by sqlite3Fts5IndexEntryCksum() is cksum. ** @@ -204401,12 +242017,13 @@ static void fts5IndexIntegrityCheckSegment( ** error, or some other SQLite error code if another error (e.g. OOM) ** occurs. */ -static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ +static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum, int bUseCksum){ int eDetail = p->pConfig->eDetail; u64 cksum2 = 0; /* Checksum based on contents of indexes */ Fts5Buffer poslist = {0,0,0}; /* Buffer used to hold a poslist */ Fts5Iter *pIter; /* Used to iterate through entire index */ Fts5Structure *pStruct; /* Index structure */ + int iLvl, iSeg; #ifdef SQLITE_DEBUG /* Used by extra internal tests only run if NDEBUG is not defined */ @@ -204414,18 +242031,19 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ Fts5Buffer term = {0,0,0}; /* Buffer used to hold most recent term */ #endif const int flags = FTS5INDEX_QUERY_NOOUTPUT; - + /* Load the FTS index structure */ pStruct = fts5StructureRead(p); + if( pStruct==0 ){ + assert( p->rc!=SQLITE_OK ); + return fts5IndexReturn(p); + } /* Check that the internal nodes of each segment match the leaves */ - if( pStruct ){ - int iLvl, iSeg; - for(iLvl=0; iLvlnLevel; iLvl++){ - for(iSeg=0; iSegaLevel[iLvl].nSeg; iSeg++){ - Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg]; - fts5IndexIntegrityCheckSegment(p, pSeg); - } + for(iLvl=0; iLvlnLevel; iLvl++){ + for(iSeg=0; iSegaLevel[iLvl].nSeg; iSeg++){ + Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg]; + fts5IndexIntegrityCheckSegment(p, pSeg); } } @@ -204436,7 +242054,7 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ ** ** Two versions of the same checksum are calculated. The first (stack ** variable cksum2) based on entries extracted from the full-text index - ** while doing a linear scan of each individual index in turn. + ** while doing a linear scan of each individual index in turn. ** ** As each term visited by the linear scans, a separate query for the ** same term is performed. cksum3 is calculated based on the entries @@ -204454,6 +242072,7 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ /* If this is a new term, query for it. Update cksum3 with the results. */ fts5TestTerm(p, &term, z, n, cksum2, &cksum3); + if( p->rc ) break; if( eDetail==FTS5_DETAIL_NONE ){ if( 0==fts5MultiIterIsEmpty(p, pIter) ){ @@ -204462,6 +242081,7 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ }else{ poslist.n = 0; fts5SegiterPoslist(p, &pIter->aSeg[pIter->aFirst[1].iFirst], 0, &poslist); + fts5BufferAppendBlob(&p->rc, &poslist, 4, (const u8*)"\0\0\0\0"); while( 0==sqlite3Fts5PoslistNext64(poslist.p, poslist.n, &iOff, &iPos) ){ int iCol = FTS5_POS2COLUMN(iPos); int iTokOff = FTS5_POS2OFFSET(iPos); @@ -204472,7 +242092,7 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ fts5TestTerm(p, &term, 0, 0, cksum2, &cksum3); fts5MultiIterFree(pIter); - if( p->rc==SQLITE_OK && cksum!=cksum2 ) p->rc = FTS5_CORRUPT; + if( p->rc==SQLITE_OK && bUseCksum && cksum!=cksum2 ) p->rc = FTS5_CORRUPT; fts5StructureRelease(pStruct); #ifdef SQLITE_DEBUG @@ -204488,12 +242108,14 @@ static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ ** function only. */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** Decode a segment-data rowid from the %_data table. This function is ** the opposite of macro FTS5_SEGMENT_ROWID(). */ static void fts5DecodeRowid( i64 iRowid, /* Rowid from %_data table */ + int *pbTombstone, /* OUT: Tombstone hash flag */ int *piSegid, /* OUT: Segment id */ int *pbDlidx, /* OUT: Dlidx flag */ int *piHeight, /* OUT: Height */ @@ -204509,11 +242131,16 @@ static void fts5DecodeRowid( iRowid >>= FTS5_DATA_DLI_B; *piSegid = (int)(iRowid & (((i64)1 << FTS5_DATA_ID_B) - 1)); -} + iRowid >>= FTS5_DATA_ID_B; + *pbTombstone = (int)(iRowid & 0x0001); +} +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ + +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) static void fts5DebugRowid(int *pRc, Fts5Buffer *pBuf, i64 iKey){ - int iSegid, iHeight, iPgno, bDlidx; /* Rowid compenents */ - fts5DecodeRowid(iKey, &iSegid, &bDlidx, &iHeight, &iPgno); + int iSegid, iHeight, iPgno, bDlidx, bTomb; /* Rowid compenents */ + fts5DecodeRowid(iKey, &bTomb, &iSegid, &bDlidx, &iHeight, &iPgno); if( iSegid==0 ){ if( iKey==FTS5_AVERAGES_ROWID ){ @@ -204523,12 +242150,16 @@ static void fts5DebugRowid(int *pRc, Fts5Buffer *pBuf, i64 iKey){ } } else{ - sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "{%ssegid=%d h=%d pgno=%d}", - bDlidx ? "dlidx " : "", iSegid, iHeight, iPgno + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "{%s%ssegid=%d h=%d pgno=%d}", + bDlidx ? "dlidx " : "", + bTomb ? "tombstone " : "", + iSegid, iHeight, iPgno ); } } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) static void fts5DebugStructure( int *pRc, /* IN/OUT: error code */ Fts5Buffer *pBuf, @@ -204538,25 +242169,33 @@ static void fts5DebugStructure( for(iLvl=0; iLvlnLevel; iLvl++){ Fts5StructureLevel *pLvl = &p->aLevel[iLvl]; - sqlite3Fts5BufferAppendPrintf(pRc, pBuf, + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " {lvl=%d nMerge=%d nSeg=%d", iLvl, pLvl->nMerge, pLvl->nSeg ); for(iSeg=0; iSegnSeg; iSeg++){ Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg]; - sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " {id=%d leaves=%d..%d}", + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " {id=%d leaves=%d..%d", pSeg->iSegid, pSeg->pgnoFirst, pSeg->pgnoLast ); + if( pSeg->iOrigin1>0 ){ + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " origin=%lld..%lld", + pSeg->iOrigin1, pSeg->iOrigin2 + ); + } + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "}"); } sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "}"); } } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** This is part of the fts5_decode() debugging aid. ** ** Arguments pBlob/nBlob contain a serialized Fts5Structure object. This ** function appends a human-readable representation of the same object -** to the buffer passed as the second argument. +** to the buffer passed as the second argument. */ static void fts5DecodeStructure( int *pRc, /* IN/OUT: error code */ @@ -204575,13 +242214,15 @@ static void fts5DecodeStructure( fts5DebugStructure(pRc, pBuf, p); fts5StructureRelease(p); } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** This is part of the fts5_decode() debugging aid. ** -** Arguments pBlob/nBlob contain an "averages" record. This function -** appends a human-readable representation of record to the buffer passed -** as the second argument. +** Arguments pBlob/nBlob contain an "averages" record. This function +** appends a human-readable representation of record to the buffer passed +** as the second argument. */ static void fts5DecodeAverages( int *pRc, /* IN/OUT: error code */ @@ -204598,7 +242239,9 @@ static void fts5DecodeAverages( zSpace = " "; } } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** Buffer (a/n) is assumed to contain a list of serialized varints. Read ** each varint and append its string representation to buffer pBuf. Return @@ -204615,12 +242258,14 @@ static int fts5DecodePoslist(int *pRc, Fts5Buffer *pBuf, const u8 *a, int n){ } return iOff; } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** The start of buffer (a/n) contains the start of a doclist. The doclist ** may or may not finish within the buffer. This function appends a text ** representation of the part of the doclist that is present to buffer -** pBuf. +** pBuf. ** ** The return value is the number of bytes read from the input buffer. */ @@ -204648,9 +242293,11 @@ static int fts5DecodeDoclist(int *pRc, Fts5Buffer *pBuf, const u8 *a, int n){ return iOff; } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* -** This function is part of the fts5_decode() debugging function. It is +** This function is part of the fts5_decode() debugging function. It is ** only ever used with detail=none tables. ** ** Buffer (pData/nData) contains a doclist in the format used by detail=none @@ -204689,7 +242336,9 @@ static void fts5DecodeRowidList( sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " %lld%s", iRowid, zApp); } } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** The implementation of user-defined scalar function fts5_decode(). */ @@ -204700,11 +242349,12 @@ static void fts5DecodeFunction( ){ i64 iRowid; /* Rowid for record being decoded */ int iSegid,iHeight,iPgno,bDlidx;/* Rowid components */ + int bTomb; const u8 *aBlob; int n; /* Record to decode */ u8 *a = 0; Fts5Buffer s; /* Build up text to return here */ int rc = SQLITE_OK; /* Return code */ - int nSpace = 0; + sqlite3_int64 nSpace = 0; int eDetailNone = (sqlite3_user_data(pCtx)!=0); assert( nArg==2 ); @@ -204720,10 +242370,9 @@ static void fts5DecodeFunction( nSpace = n + FTS5_DATA_ZERO_PADDING; a = (u8*)sqlite3Fts5MallocZero(&rc, nSpace); if( a==0 ) goto decode_out; - memcpy(a, aBlob, n); + if( n>0 ) memcpy(a, aBlob, n); - - fts5DecodeRowid(iRowid, &iSegid, &bDlidx, &iHeight, &iPgno); + fts5DecodeRowid(iRowid, &bTomb, &iSegid, &bDlidx, &iHeight, &iPgno); fts5DebugRowid(&rc, &s, iRowid); if( bDlidx ){ @@ -204738,10 +242387,32 @@ static void fts5DecodeFunction( lvl.iLeafPgno = iPgno; for(fts5DlidxLvlNext(&lvl); lvl.bEof==0; fts5DlidxLvlNext(&lvl)){ - sqlite3Fts5BufferAppendPrintf(&rc, &s, + sqlite3Fts5BufferAppendPrintf(&rc, &s, " %d(%lld)", lvl.iLeafPgno, lvl.iRowid ); } + }else if( bTomb ){ + u32 nElem = fts5GetU32(&a[4]); + int szKey = (aBlob[0]==4 || aBlob[0]==8) ? aBlob[0] : 8; + int nSlot = (n - 8) / szKey; + int ii; + sqlite3Fts5BufferAppendPrintf(&rc, &s, " nElem=%d", (int)nElem); + if( aBlob[1] ){ + sqlite3Fts5BufferAppendPrintf(&rc, &s, " 0"); + } + for(ii=0; iiszLeaf ){ + rc = FTS5_CORRUPT; + }else{ + fts5DecodeRowidList(&rc, &s, &a[iOff], iTermOff-iOff); + } iOff = iTermOff; if( iOffn ){ + rc = FTS5_CORRUPT; + goto decode_out; } } @@ -204827,18 +242504,26 @@ static void fts5DecodeFunction( }else{ iOff = szLeaf; } + if( iOff>n ){ + rc = FTS5_CORRUPT; + goto decode_out; + } fts5DecodePoslist(&rc, &s, &a[4], iOff-4); /* Decode any more doclist data that appears on the page before the ** first term. */ nDoclist = (iTermOff ? iTermOff : szLeaf) - iOff; + if( nDoclist+iOff>n ){ + rc = FTS5_CORRUPT; + goto decode_out; + } fts5DecodeDoclist(&rc, &s, &a[iOff], nDoclist); - while( iPgidxOffszLeaf ){ + rc = FTS5_CORRUPT; + break; + } if( bFirst==0 ){ iOff += fts5GetVarint32(&a[iOff], nByte); + if( nByte>term.n ){ + rc = FTS5_CORRUPT; + break; + } term.n = nByte; } iOff += fts5GetVarint32(&a[iOff], nByte); + if( iOff+nByte>n ){ + rc = FTS5_CORRUPT; + break; + } fts5BufferAppendBlob(&rc, &term, nByte, &a[iOff]); iOff += nByte; @@ -204866,7 +242563,7 @@ static void fts5DecodeFunction( fts5BufferFree(&term); } - + decode_out: sqlite3_free(a); if( rc==SQLITE_OK ){ @@ -204876,7 +242573,9 @@ static void fts5DecodeFunction( } fts5BufferFree(&s); } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) /* ** The implementation of user-defined scalar function fts5_rowid(). */ @@ -204894,7 +242593,7 @@ static void fts5RowidFunction( i64 iRowid; int segid, pgno; if( nArg!=3 ){ - sqlite3_result_error(pCtx, + sqlite3_result_error(pCtx, "should be: fts5_rowid('segment', segid, pgno))", -1 ); }else{ @@ -204904,12 +242603,241 @@ static void fts5RowidFunction( sqlite3_result_int64(pCtx, iRowid); } }else{ - sqlite3_result_error(pCtx, + sqlite3_result_error(pCtx, "first arg to fts5_rowid() must be 'segment'" , -1 ); } } } +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ + +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) + +typedef struct Fts5StructVtab Fts5StructVtab; +struct Fts5StructVtab { + sqlite3_vtab base; +}; + +typedef struct Fts5StructVcsr Fts5StructVcsr; +struct Fts5StructVcsr { + sqlite3_vtab_cursor base; + Fts5Structure *pStruct; + int iLevel; + int iSeg; + int iRowid; +}; + +/* +** Create a new fts5_structure() table-valued function. +*/ +static int fts5structConnectMethod( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + Fts5StructVtab *pNew = 0; + int rc = SQLITE_OK; + + rc = sqlite3_declare_vtab(db, + "CREATE TABLE xyz(" + "level, segment, merge, segid, leaf1, leaf2, loc1, loc2, " + "npgtombstone, nentrytombstone, nentry, struct HIDDEN);" + ); + if( rc==SQLITE_OK ){ + pNew = sqlite3Fts5MallocZero(&rc, sizeof(*pNew)); + } + + *ppVtab = (sqlite3_vtab*)pNew; + return rc; +} + +/* +** We must have a single struct=? constraint that will be passed through +** into the xFilter method. If there is no valid stmt=? constraint, +** then return an SQLITE_CONSTRAINT error. +*/ +static int fts5structBestIndexMethod( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; + int rc = SQLITE_CONSTRAINT; + struct sqlite3_index_constraint *p; + pIdxInfo->estimatedCost = (double)100; + pIdxInfo->estimatedRows = 100; + pIdxInfo->idxNum = 0; + for(i=0, p=pIdxInfo->aConstraint; inConstraint; i++, p++){ + if( p->usable==0 ) continue; + if( p->op==SQLITE_INDEX_CONSTRAINT_EQ && p->iColumn==11 ){ + rc = SQLITE_OK; + pIdxInfo->aConstraintUsage[i].omit = 1; + pIdxInfo->aConstraintUsage[i].argvIndex = 1; + break; + } + } + return rc; +} + +/* +** This method is the destructor for bytecodevtab objects. +*/ +static int fts5structDisconnectMethod(sqlite3_vtab *pVtab){ + Fts5StructVtab *p = (Fts5StructVtab*)pVtab; + sqlite3_free(p); + return SQLITE_OK; +} + +/* +** Constructor for a new bytecodevtab_cursor object. +*/ +static int fts5structOpenMethod(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCsr){ + int rc = SQLITE_OK; + Fts5StructVcsr *pNew = 0; + + pNew = sqlite3Fts5MallocZero(&rc, sizeof(*pNew)); + *ppCsr = (sqlite3_vtab_cursor*)pNew; + + return SQLITE_OK; +} + +/* +** Destructor for a bytecodevtab_cursor. +*/ +static int fts5structCloseMethod(sqlite3_vtab_cursor *cur){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr*)cur; + fts5StructureRelease(pCsr->pStruct); + sqlite3_free(pCsr); + return SQLITE_OK; +} + + +/* +** Advance a bytecodevtab_cursor to its next row of output. +*/ +static int fts5structNextMethod(sqlite3_vtab_cursor *cur){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr*)cur; + Fts5Structure *p = pCsr->pStruct; + + assert( pCsr->pStruct ); + pCsr->iSeg++; + pCsr->iRowid++; + while( pCsr->iLevelnLevel && pCsr->iSeg>=p->aLevel[pCsr->iLevel].nSeg ){ + pCsr->iLevel++; + pCsr->iSeg = 0; + } + if( pCsr->iLevel>=p->nLevel ){ + fts5StructureRelease(pCsr->pStruct); + pCsr->pStruct = 0; + } + return SQLITE_OK; +} + +/* +** Return TRUE if the cursor has been moved off of the last +** row of output. +*/ +static int fts5structEofMethod(sqlite3_vtab_cursor *cur){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr*)cur; + return pCsr->pStruct==0; +} + +static int fts5structRowidMethod( + sqlite3_vtab_cursor *cur, + sqlite_int64 *piRowid +){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr*)cur; + *piRowid = pCsr->iRowid; + return SQLITE_OK; +} + +/* +** Return values of columns for the row at which the bytecodevtab_cursor +** is currently pointing. +*/ +static int fts5structColumnMethod( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr*)cur; + Fts5Structure *p = pCsr->pStruct; + Fts5StructureSegment *pSeg = &p->aLevel[pCsr->iLevel].aSeg[pCsr->iSeg]; + + switch( i ){ + case 0: /* level */ + sqlite3_result_int(ctx, pCsr->iLevel); + break; + case 1: /* segment */ + sqlite3_result_int(ctx, pCsr->iSeg); + break; + case 2: /* merge */ + sqlite3_result_int(ctx, pCsr->iSeg < p->aLevel[pCsr->iLevel].nMerge); + break; + case 3: /* segid */ + sqlite3_result_int(ctx, pSeg->iSegid); + break; + case 4: /* leaf1 */ + sqlite3_result_int(ctx, pSeg->pgnoFirst); + break; + case 5: /* leaf2 */ + sqlite3_result_int(ctx, pSeg->pgnoLast); + break; + case 6: /* origin1 */ + sqlite3_result_int64(ctx, pSeg->iOrigin1); + break; + case 7: /* origin2 */ + sqlite3_result_int64(ctx, pSeg->iOrigin2); + break; + case 8: /* npgtombstone */ + sqlite3_result_int(ctx, pSeg->nPgTombstone); + break; + case 9: /* nentrytombstone */ + sqlite3_result_int64(ctx, pSeg->nEntryTombstone); + break; + case 10: /* nentry */ + sqlite3_result_int64(ctx, pSeg->nEntry); + break; + } + return SQLITE_OK; +} + +/* +** Initialize a cursor. +** +** idxNum==0 means show all subprograms +** idxNum==1 means show only the main bytecode and omit subprograms. +*/ +static int fts5structFilterMethod( + sqlite3_vtab_cursor *pVtabCursor, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + Fts5StructVcsr *pCsr = (Fts5StructVcsr *)pVtabCursor; + int rc = SQLITE_OK; + + const u8 *aBlob = 0; + int nBlob = 0; + + assert( argc==1 ); + fts5StructureRelease(pCsr->pStruct); + pCsr->pStruct = 0; + + nBlob = sqlite3_value_bytes(argv[0]); + aBlob = (const u8*)sqlite3_value_blob(argv[0]); + rc = fts5StructureDecode(aBlob, nBlob, 0, &pCsr->pStruct); + if( rc==SQLITE_OK ){ + pCsr->iLevel = 0; + pCsr->iRowid = 0; + pCsr->iSeg = -1; + rc = fts5structNextMethod(pVtabCursor); + } + + return rc; +} + +#endif /* SQLITE_TEST || SQLITE_FTS5_DEBUG */ /* ** This is called as part of registering the FTS5 module with database @@ -204920,13 +242848,14 @@ static void fts5RowidFunction( ** SQLite error code is returned instead. */ static int sqlite3Fts5IndexInit(sqlite3 *db){ +#if defined(SQLITE_TEST) || defined(SQLITE_FTS5_DEBUG) int rc = sqlite3_create_function( db, "fts5_decode", 2, SQLITE_UTF8, 0, fts5DecodeFunction, 0, 0 ); if( rc==SQLITE_OK ){ rc = sqlite3_create_function( - db, "fts5_decode_none", 2, + db, "fts5_decode_none", 2, SQLITE_UTF8, (void*)db, fts5DecodeFunction, 0, 0 ); } @@ -204936,7 +242865,41 @@ static int sqlite3Fts5IndexInit(sqlite3 *db){ db, "fts5_rowid", -1, SQLITE_UTF8, 0, fts5RowidFunction, 0, 0 ); } + + if( rc==SQLITE_OK ){ + static const sqlite3_module fts5structure_module = { + 0, /* iVersion */ + 0, /* xCreate */ + fts5structConnectMethod, /* xConnect */ + fts5structBestIndexMethod, /* xBestIndex */ + fts5structDisconnectMethod, /* xDisconnect */ + 0, /* xDestroy */ + fts5structOpenMethod, /* xOpen */ + fts5structCloseMethod, /* xClose */ + fts5structFilterMethod, /* xFilter */ + fts5structNextMethod, /* xNext */ + fts5structEofMethod, /* xEof */ + fts5structColumnMethod, /* xColumn */ + fts5structRowidMethod, /* xRowid */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindFunction */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ + }; + rc = sqlite3_create_module(db, "fts5_structure", &fts5structure_module, 0); + } return rc; +#else + return SQLITE_OK; + UNUSED_PARAM(db); +#endif } @@ -204972,20 +242935,22 @@ static int sqlite3Fts5IndexReset(Fts5Index *p){ ** assert() conditions in the fts5 code are activated - conditions that are ** only true if it is guaranteed that the fts5 database is not corrupt. */ +#ifdef SQLITE_DEBUG SQLITE_API int sqlite3_fts5_may_be_corrupt = 1; +#endif typedef struct Fts5Auxdata Fts5Auxdata; typedef struct Fts5Auxiliary Fts5Auxiliary; typedef struct Fts5Cursor Fts5Cursor; +typedef struct Fts5FullTable Fts5FullTable; typedef struct Fts5Sorter Fts5Sorter; -typedef struct Fts5Table Fts5Table; typedef struct Fts5TokenizerModule Fts5TokenizerModule; /* -** NOTES ON TRANSACTIONS: +** NOTES ON TRANSACTIONS: ** -** SQLite invokes the following virtual table methods as transactions are +** SQLite invokes the following virtual table methods as transactions are ** opened and closed by the user: ** ** xBegin(): Start of a new transaction. @@ -204994,7 +242959,7 @@ typedef struct Fts5TokenizerModule Fts5TokenizerModule; ** xRollback(): Rollback the transaction. ** ** Anything that is required as part of a commit that may fail is performed -** in the xSync() callback. Current versions of SQLite ignore any errors +** in the xSync() callback. Current versions of SQLite ignore any errors ** returned by xCommit(). ** ** And as sub-transactions are opened/closed: @@ -205003,9 +242968,9 @@ typedef struct Fts5TokenizerModule Fts5TokenizerModule; ** xRelease(int S): Commit and close savepoint S. ** xRollbackTo(int S): Rollback to start of savepoint S. ** -** During a write-transaction the fts5_index.c module may cache some data +** During a write-transaction the fts5_index.c module may cache some data ** in-memory. It is flushed to disk whenever xSync(), xRelease() or -** xSavepoint() is called. And discarded whenever xRollback() or xRollbackTo() +** xSavepoint() is called. And discarded whenever xRollback() or xRollbackTo() ** is called. ** ** Additionally, if SQLITE_DEBUG is defined, an instance of the following @@ -205019,13 +242984,13 @@ struct Fts5TransactionState { }; /* -** A single object of this type is allocated when the FTS5 module is +** A single object of this type is allocated when the FTS5 module is ** registered with a database handle. It is used to store pointers to ** all registered FTS5 extensions - tokenizers and auxiliary functions. */ struct Fts5Global { fts5_api api; /* User visible part of object (see fts5.h) */ - sqlite3 *db; /* Associated database connection */ + sqlite3 *db; /* Associated database connection */ i64 iNextId; /* Used to allocate unique cursor ids */ Fts5Auxiliary *pAux; /* First in list of all aux. functions */ Fts5TokenizerModule *pTok; /* First in list of all tokenizer modules */ @@ -205060,13 +243025,8 @@ struct Fts5TokenizerModule { Fts5TokenizerModule *pNext; /* Next registered tokenizer module */ }; -/* -** Virtual-table object. -*/ -struct Fts5Table { - sqlite3_vtab base; /* Base class used by SQLite core */ - Fts5Config *pConfig; /* Virtual table configuration */ - Fts5Index *pIndex; /* Full-text index */ +struct Fts5FullTable { + Fts5Table p; /* Public class members from fts5Int.h */ Fts5Storage *pStorage; /* Document store */ Fts5Global *pGlobal; /* Global (connection wide) data */ Fts5Cursor *pSortCsr; /* Sort data from this cursor */ @@ -205086,7 +243046,7 @@ struct Fts5MatchPhrase { ** ** aIdx[]: ** There is one entry in the aIdx[] array for each phrase in the query, -** the value of which is the offset within aPoslist[] following the last +** the value of which is the offset within aPoslist[] following the last ** byte of the position list for the corresponding phrase. */ struct Fts5Sorter { @@ -205102,8 +243062,8 @@ struct Fts5Sorter { ** Virtual-table cursor object. ** ** iSpecial: -** If this is a 'special' query (refer to function fts5SpecialMatch()), -** then this variable contains the result of the query. +** If this is a 'special' query (refer to function fts5SpecialMatch()), +** then this variable contains the result of the query. ** ** iFirstRowid, iLastRowid: ** These variables are only used for FTS5_PLAN_MATCH cursors. Assuming the @@ -205154,7 +243114,7 @@ struct Fts5Cursor { }; /* -** Bits that make up the "idxNum" parameter passed indirectly by +** Bits that make up the "idxNum" parameter passed indirectly by ** xBestIndex() to xFilter(). */ #define FTS5_BI_MATCH 0x0001 /* MATCH ? */ @@ -205204,7 +243164,7 @@ struct Fts5Auxdata { #define FTS5_SAVEPOINT 5 #define FTS5_RELEASE 6 #define FTS5_ROLLBACKTO 7 -static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){ +static void fts5CheckTransactionState(Fts5FullTable *p, int op, int iSavepoint){ switch( op ){ case FTS5_BEGIN: assert( p->ts.eState==0 ); @@ -205213,7 +243173,7 @@ static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){ break; case FTS5_SYNC: - assert( p->ts.eState==1 ); + assert( p->ts.eState==1 || p->ts.eState==2 ); p->ts.eState = 2; break; @@ -205228,23 +243188,26 @@ static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){ break; case FTS5_SAVEPOINT: - assert( p->ts.eState==1 ); + assert( p->ts.eState>=1 ); assert( iSavepoint>=0 ); - assert( iSavepoint>p->ts.iSavepoint ); + assert( iSavepoint>=p->ts.iSavepoint ); p->ts.iSavepoint = iSavepoint; break; - + case FTS5_RELEASE: - assert( p->ts.eState==1 ); + assert( p->ts.eState>=1 ); assert( iSavepoint>=0 ); assert( iSavepoint<=p->ts.iSavepoint ); p->ts.iSavepoint = iSavepoint-1; break; case FTS5_ROLLBACKTO: - assert( p->ts.eState==1 ); - assert( iSavepoint>=0 ); - assert( iSavepoint<=p->ts.iSavepoint ); + assert( p->ts.eState>=1 ); + assert( iSavepoint>=-1 ); + /* The following assert() can fail if another vtab strikes an error + ** within an xSavepoint() call then SQLite calls xRollbackTo() - without + ** having called xSavepoint() on this vtab. */ + /* assert( iSavepoint<=p->ts.iSavepoint ); */ p->ts.iSavepoint = iSavepoint; break; } @@ -205256,18 +243219,18 @@ static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){ /* ** Return true if pTab is a contentless table. */ -static int fts5IsContentless(Fts5Table *pTab){ - return pTab->pConfig->eContent==FTS5_CONTENT_NONE; +static int fts5IsContentless(Fts5FullTable *pTab){ + return pTab->p.pConfig->eContent==FTS5_CONTENT_NONE; } /* -** Delete a virtual table handle allocated by fts5InitVtab(). +** Delete a virtual table handle allocated by fts5InitVtab(). */ -static void fts5FreeVtab(Fts5Table *pTab){ +static void fts5FreeVtab(Fts5FullTable *pTab){ if( pTab ){ - sqlite3Fts5IndexClose(pTab->pIndex); + sqlite3Fts5IndexClose(pTab->p.pIndex); sqlite3Fts5StorageClose(pTab->pStorage); - sqlite3Fts5ConfigFree(pTab->pConfig); + sqlite3Fts5ConfigFree(pTab->p.pConfig); sqlite3_free(pTab); } } @@ -205276,7 +243239,7 @@ static void fts5FreeVtab(Fts5Table *pTab){ ** The xDisconnect() virtual table method. */ static int fts5DisconnectMethod(sqlite3_vtab *pVtab){ - fts5FreeVtab((Fts5Table*)pVtab); + fts5FreeVtab((Fts5FullTable*)pVtab); return SQLITE_OK; } @@ -205287,7 +243250,7 @@ static int fts5DestroyMethod(sqlite3_vtab *pVtab){ Fts5Table *pTab = (Fts5Table*)pVtab; int rc = sqlite3Fts5DropAll(pTab->pConfig); if( rc==SQLITE_OK ){ - fts5FreeVtab((Fts5Table*)pVtab); + fts5FreeVtab((Fts5FullTable*)pVtab); } return rc; } @@ -205316,28 +243279,28 @@ static int fts5InitVtab( const char **azConfig = (const char**)argv; int rc = SQLITE_OK; /* Return code */ Fts5Config *pConfig = 0; /* Results of parsing argc/argv */ - Fts5Table *pTab = 0; /* New virtual table object */ + Fts5FullTable *pTab = 0; /* New virtual table object */ /* Allocate the new vtab object and parse the configuration */ - pTab = (Fts5Table*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Table)); + pTab = (Fts5FullTable*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5FullTable)); if( rc==SQLITE_OK ){ rc = sqlite3Fts5ConfigParse(pGlobal, db, argc, azConfig, &pConfig, pzErr); assert( (rc==SQLITE_OK && *pzErr==0) || pConfig==0 ); } if( rc==SQLITE_OK ){ - pTab->pConfig = pConfig; + pTab->p.pConfig = pConfig; pTab->pGlobal = pGlobal; } /* Open the index sub-system */ if( rc==SQLITE_OK ){ - rc = sqlite3Fts5IndexOpen(pConfig, bCreate, &pTab->pIndex, pzErr); + rc = sqlite3Fts5IndexOpen(pConfig, bCreate, &pTab->p.pIndex, pzErr); } /* Open the storage sub-system */ if( rc==SQLITE_OK ){ rc = sqlite3Fts5StorageOpen( - pConfig, pTab->pIndex, bCreate, &pTab->pStorage, pzErr + pConfig, pTab->p.pIndex, bCreate, &pTab->pStorage, pzErr ); } @@ -205350,8 +243313,8 @@ static int fts5InitVtab( if( rc==SQLITE_OK ){ assert( pConfig->pzErrmsg==0 ); pConfig->pzErrmsg = pzErr; - rc = sqlite3Fts5IndexLoadConfig(pTab->pIndex); - sqlite3Fts5IndexRollback(pTab->pIndex); + rc = sqlite3Fts5IndexLoadConfig(pTab->p.pIndex); + sqlite3Fts5IndexRollback(pTab->p.pIndex); pConfig->pzErrmsg = 0; } @@ -205416,21 +243379,62 @@ static void fts5SetUniqueFlag(sqlite3_index_info *pIdxInfo){ #endif } +static int fts5UsePatternMatch( + Fts5Config *pConfig, + struct sqlite3_index_constraint *p +){ + assert( FTS5_PATTERN_GLOB==SQLITE_INDEX_CONSTRAINT_GLOB ); + assert( FTS5_PATTERN_LIKE==SQLITE_INDEX_CONSTRAINT_LIKE ); + if( pConfig->ePattern==FTS5_PATTERN_GLOB && p->op==FTS5_PATTERN_GLOB ){ + return 1; + } + if( pConfig->ePattern==FTS5_PATTERN_LIKE + && (p->op==FTS5_PATTERN_LIKE || p->op==FTS5_PATTERN_GLOB) + ){ + return 1; + } + return 0; +} + /* -** Implementation of the xBestIndex method for FTS5 tables. Within the +** Implementation of the xBestIndex method for FTS5 tables. Within the ** WHERE constraint, it searches for the following: ** -** 1. A MATCH constraint against the special column. +** 1. A MATCH constraint against the table column. ** 2. A MATCH constraint against the "rank" column. -** 3. An == constraint against the rowid column. -** 4. A < or <= constraint against the rowid column. -** 5. A > or >= constraint against the rowid column. +** 3. A MATCH constraint against some other column. +** 4. An == constraint against the rowid column. +** 5. A < or <= constraint against the rowid column. +** 6. A > or >= constraint against the rowid column. ** -** Within the ORDER BY, either: +** Within the ORDER BY, the following are supported: ** ** 5. ORDER BY rank [ASC|DESC] ** 6. ORDER BY rowid [ASC|DESC] ** +** Information for the xFilter call is passed via both the idxNum and +** idxStr variables. Specifically, idxNum is a bitmask of the following +** flags used to encode the ORDER BY clause: +** +** FTS5_BI_ORDER_RANK +** FTS5_BI_ORDER_ROWID +** FTS5_BI_ORDER_DESC +** +** idxStr is used to encode data from the WHERE clause. For each argument +** passed to the xFilter method, the following is appended to idxStr: +** +** Match against table column: "m" +** Match against rank column: "r" +** Match against other column: "M" +** LIKE against other column: "L" +** GLOB against other column: "G" +** Equality constraint against the rowid: "=" +** A < or <= against the rowid: "<" +** A > or >= against the rowid: ">" +** +** This function ensures that there is at most one "r" or "=". And that if +** there exists an "=" then there is no "<" or ">". +** ** Costs are assigned as follows: ** ** a) If an unusable MATCH operator is present in the WHERE clause, the @@ -205458,32 +243462,18 @@ static int fts5BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ Fts5Config *pConfig = pTab->pConfig; const int nCol = pConfig->nCol; int idxFlags = 0; /* Parameter passed through to xFilter() */ - int bHasMatch; - int iNext; int i; - struct Constraint { - int op; /* Mask against sqlite3_index_constraint.op */ - int fts5op; /* FTS5 mask for idxFlags */ - int iCol; /* 0==rowid, 1==tbl, 2==rank */ - int omit; /* True to omit this if found */ - int iConsIndex; /* Index in pInfo->aConstraint[] */ - } aConstraint[] = { - {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, - FTS5_BI_MATCH, 1, 1, -1}, - {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, - FTS5_BI_RANK, 2, 1, -1}, - {SQLITE_INDEX_CONSTRAINT_EQ, FTS5_BI_ROWID_EQ, 0, 0, -1}, - {SQLITE_INDEX_CONSTRAINT_LT|SQLITE_INDEX_CONSTRAINT_LE, - FTS5_BI_ROWID_LE, 0, 0, -1}, - {SQLITE_INDEX_CONSTRAINT_GT|SQLITE_INDEX_CONSTRAINT_GE, - FTS5_BI_ROWID_GE, 0, 0, -1}, - }; + char *idxStr; + int iIdxStr = 0; + int iCons = 0; + + int bSeenEq = 0; + int bSeenGt = 0; + int bSeenLt = 0; + int bSeenMatch = 0; + int bSeenRank = 0; - int aColMap[3]; - aColMap[0] = -1; - aColMap[1] = nCol; - aColMap[2] = nCol+1; assert( SQLITE_INDEX_CONSTRAINT_EQbLock ){ + pTab->base.zErrMsg = sqlite3_mprintf( + "recursively defined fts5 content table" + ); + return SQLITE_ERROR; + } + + idxStr = (char*)sqlite3_malloc(pInfo->nConstraint * 8 + 1); + if( idxStr==0 ) return SQLITE_NOMEM; + pInfo->idxStr = idxStr; + pInfo->needToFreeIdxStr = 1; + for(i=0; inConstraint; i++){ struct sqlite3_index_constraint *p = &pInfo->aConstraint[i]; int iCol = p->iColumn; - - if( (p->op==SQLITE_INDEX_CONSTRAINT_MATCH && iCol>=0 && iCol<=nCol) - || (p->op==SQLITE_INDEX_CONSTRAINT_EQ && iCol==nCol) + if( p->op==SQLITE_INDEX_CONSTRAINT_MATCH + || (p->op==SQLITE_INDEX_CONSTRAINT_EQ && iCol>=nCol) ){ /* A MATCH operator or equivalent */ - if( p->usable ){ - idxFlags = (idxFlags & 0xFFFF) | FTS5_BI_MATCH | (iCol << 16); - aConstraint[0].iConsIndex = i; - }else{ - /* As there exists an unusable MATCH constraint this is an + if( p->usable==0 || iCol<0 ){ + /* As there exists an unusable MATCH constraint this is an ** unusable plan. Set a prohibitively high cost. */ pInfo->estimatedCost = 1e50; + assert( iIdxStr < pInfo->nConstraint*6 + 1 ); + idxStr[iIdxStr] = 0; return SQLITE_OK; - } - }else if( p->op<=SQLITE_INDEX_CONSTRAINT_MATCH ){ - int j; - for(j=1; jiCol] && (p->op & pC->op) && p->usable ){ - pC->iConsIndex = i; - idxFlags |= pC->fts5op; + }else{ + if( iCol==nCol+1 ){ + if( bSeenRank ) continue; + idxStr[iIdxStr++] = 'r'; + bSeenRank = 1; + }else if( iCol>=0 ){ + bSeenMatch = 1; + idxStr[iIdxStr++] = 'M'; + sqlite3_snprintf(6, &idxStr[iIdxStr], "%d", iCol); + idxStr += strlen(&idxStr[iIdxStr]); + assert( idxStr[iIdxStr]=='\0' ); } + pInfo->aConstraintUsage[i].argvIndex = ++iCons; + pInfo->aConstraintUsage[i].omit = 1; + } + }else if( p->usable ){ + if( iCol>=0 && iColop==FTS5_PATTERN_LIKE || p->op==FTS5_PATTERN_GLOB ); + idxStr[iIdxStr++] = p->op==FTS5_PATTERN_LIKE ? 'L' : 'G'; + sqlite3_snprintf(6, &idxStr[iIdxStr], "%d", iCol); + idxStr += strlen(&idxStr[iIdxStr]); + pInfo->aConstraintUsage[i].argvIndex = ++iCons; + assert( idxStr[iIdxStr]=='\0' ); + }else if( bSeenEq==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ && iCol<0 ){ + idxStr[iIdxStr++] = '='; + bSeenEq = 1; + pInfo->aConstraintUsage[i].argvIndex = ++iCons; } } } + if( bSeenEq==0 ){ + for(i=0; inConstraint; i++){ + struct sqlite3_index_constraint *p = &pInfo->aConstraint[i]; + if( p->iColumn<0 && p->usable ){ + int op = p->op; + if( op==SQLITE_INDEX_CONSTRAINT_LT || op==SQLITE_INDEX_CONSTRAINT_LE ){ + if( bSeenLt ) continue; + idxStr[iIdxStr++] = '<'; + pInfo->aConstraintUsage[i].argvIndex = ++iCons; + bSeenLt = 1; + }else + if( op==SQLITE_INDEX_CONSTRAINT_GT || op==SQLITE_INDEX_CONSTRAINT_GE ){ + if( bSeenGt ) continue; + idxStr[iIdxStr++] = '>'; + pInfo->aConstraintUsage[i].argvIndex = ++iCons; + bSeenGt = 1; + } + } + } + } + idxStr[iIdxStr] = '\0'; + /* Set idxFlags flags for the ORDER BY clause */ if( pInfo->nOrderBy==1 ){ int iSort = pInfo->aOrderBy[0].iColumn; - if( iSort==(pConfig->nCol+1) && BitFlagTest(idxFlags, FTS5_BI_MATCH) ){ + if( iSort==(pConfig->nCol+1) && bSeenMatch ){ idxFlags |= FTS5_BI_ORDER_RANK; }else if( iSort==-1 ){ idxFlags |= FTS5_BI_ORDER_ROWID; @@ -205538,33 +243577,22 @@ static int fts5BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ } /* Calculate the estimated cost based on the flags set in idxFlags. */ - bHasMatch = BitFlagTest(idxFlags, FTS5_BI_MATCH); - if( BitFlagTest(idxFlags, FTS5_BI_ROWID_EQ) ){ - pInfo->estimatedCost = bHasMatch ? 100.0 : 10.0; - if( bHasMatch==0 ) fts5SetUniqueFlag(pInfo); - }else if( BitFlagAllTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){ - pInfo->estimatedCost = bHasMatch ? 500.0 : 250000.0; - }else if( BitFlagTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){ - pInfo->estimatedCost = bHasMatch ? 750.0 : 750000.0; + if( bSeenEq ){ + pInfo->estimatedCost = bSeenMatch ? 100.0 : 10.0; + if( bSeenMatch==0 ) fts5SetUniqueFlag(pInfo); + }else if( bSeenLt && bSeenGt ){ + pInfo->estimatedCost = bSeenMatch ? 500.0 : 250000.0; + }else if( bSeenLt || bSeenGt ){ + pInfo->estimatedCost = bSeenMatch ? 750.0 : 750000.0; }else{ - pInfo->estimatedCost = bHasMatch ? 1000.0 : 1000000.0; - } - - /* Assign argvIndex values to each constraint in use. */ - iNext = 1; - for(i=0; iiConsIndex>=0 ){ - pInfo->aConstraintUsage[pC->iConsIndex].argvIndex = iNext++; - pInfo->aConstraintUsage[pC->iConsIndex].omit = (unsigned char)pC->omit; - } + pInfo->estimatedCost = bSeenMatch ? 1000.0 : 1000000.0; } pInfo->idxNum = idxFlags; return SQLITE_OK; } -static int fts5NewTransaction(Fts5Table *pTab){ +static int fts5NewTransaction(Fts5FullTable *pTab){ Fts5Cursor *pCsr; for(pCsr=pTab->pGlobal->pCsr; pCsr; pCsr=pCsr->pNext){ if( pCsr->base.pVtab==(sqlite3_vtab*)pTab ) return SQLITE_OK; @@ -205576,19 +243604,19 @@ static int fts5NewTransaction(Fts5Table *pTab){ ** Implementation of xOpen method. */ static int fts5OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ - Fts5Table *pTab = (Fts5Table*)pVTab; - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)pVTab; + Fts5Config *pConfig = pTab->p.pConfig; Fts5Cursor *pCsr = 0; /* New cursor object */ - int nByte; /* Bytes of space to allocate */ + sqlite3_int64 nByte; /* Bytes of space to allocate */ int rc; /* Return code */ rc = fts5NewTransaction(pTab); if( rc==SQLITE_OK ){ nByte = sizeof(Fts5Cursor) + pConfig->nCol * sizeof(int); - pCsr = (Fts5Cursor*)sqlite3_malloc(nByte); + pCsr = (Fts5Cursor*)sqlite3_malloc64(nByte); if( pCsr ){ Fts5Global *pGlobal = pTab->pGlobal; - memset(pCsr, 0, nByte); + memset(pCsr, 0, (size_t)nByte); pCsr->aColumnSize = (int*)&pCsr[1]; pCsr->pNext = pGlobal->pCsr; pGlobal->pCsr = pCsr; @@ -205610,20 +243638,20 @@ static int fts5StmtType(Fts5Cursor *pCsr){ /* ** This function is called after the cursor passed as the only argument -** is moved to point at a different row. It clears all cached data +** is moved to point at a different row. It clears all cached data ** specific to the previous row stored by the cursor object. */ static void fts5CsrNewrow(Fts5Cursor *pCsr){ - CsrFlagSet(pCsr, - FTS5CSR_REQUIRE_CONTENT - | FTS5CSR_REQUIRE_DOCSIZE - | FTS5CSR_REQUIRE_INST - | FTS5CSR_REQUIRE_POSLIST + CsrFlagSet(pCsr, + FTS5CSR_REQUIRE_CONTENT + | FTS5CSR_REQUIRE_DOCSIZE + | FTS5CSR_REQUIRE_INST + | FTS5CSR_REQUIRE_POSLIST ); } static void fts5FreeCursorComponents(Fts5Cursor *pCsr){ - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); Fts5Auxdata *pData; Fts5Auxdata *pNext; @@ -205657,6 +243685,7 @@ static void fts5FreeCursorComponents(Fts5Cursor *pCsr){ sqlite3_free(pCsr->zRankArgs); } + sqlite3Fts5IndexCloseReader(pTab->p.pIndex); memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan - (u8*)pCsr)); } @@ -205667,7 +243696,7 @@ static void fts5FreeCursorComponents(Fts5Cursor *pCsr){ */ static int fts5CloseMethod(sqlite3_vtab_cursor *pCursor){ if( pCursor ){ - Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCursor->pVtab); Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; Fts5Cursor **pp; @@ -205688,7 +243717,7 @@ static int fts5SorterNext(Fts5Cursor *pCsr){ rc = sqlite3_step(pSorter->pStmt); if( rc==SQLITE_DONE ){ rc = SQLITE_OK; - CsrFlagSet(pCsr, FTS5CSR_EOF); + CsrFlagSet(pCsr, FTS5CSR_EOF|FTS5CSR_REQUIRE_CONTENT); }else if( rc==SQLITE_ROW ){ const u8 *a; const u8 *aBlob; @@ -205721,14 +243750,14 @@ static int fts5SorterNext(Fts5Cursor *pCsr){ /* -** Set the FTS5CSR_REQUIRE_RESEEK flag on all FTS5_PLAN_MATCH cursors +** Set the FTS5CSR_REQUIRE_RESEEK flag on all FTS5_PLAN_MATCH cursors ** open on table pTab. */ -static void fts5TripCursors(Fts5Table *pTab){ +static void fts5TripCursors(Fts5FullTable *pTab){ Fts5Cursor *pCsr; for(pCsr=pTab->pGlobal->pCsr; pCsr; pCsr=pCsr->pNext){ if( pCsr->ePlan==FTS5_PLAN_MATCH - && pCsr->base.pVtab==(sqlite3_vtab*)pTab + && pCsr->base.pVtab==(sqlite3_vtab*)pTab ){ CsrFlagSet(pCsr, FTS5CSR_REQUIRE_RESEEK); } @@ -205737,25 +243766,25 @@ static void fts5TripCursors(Fts5Table *pTab){ /* ** If the REQUIRE_RESEEK flag is set on the cursor passed as the first -** argument, close and reopen all Fts5IndexIter iterators that the cursor +** argument, close and reopen all Fts5IndexIter iterators that the cursor ** is using. Then attempt to move the cursor to a rowid equal to or laster -** (in the cursors sort order - ASC or DESC) than the current rowid. +** (in the cursors sort order - ASC or DESC) than the current rowid. ** ** If the new rowid is not equal to the old, set output parameter *pbSkip ** to 1 before returning. Otherwise, leave it unchanged. ** -** Return SQLITE_OK if successful or if no reseek was required, or an +** Return SQLITE_OK if successful or if no reseek was required, or an ** error code if an error occurred. */ static int fts5CursorReseek(Fts5Cursor *pCsr, int *pbSkip){ int rc = SQLITE_OK; assert( *pbSkip==0 ); if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_RESEEK) ){ - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); int bDesc = pCsr->bDesc; i64 iRowid = sqlite3Fts5ExprRowid(pCsr->pExpr); - rc = sqlite3Fts5ExprFirst(pCsr->pExpr, pTab->pIndex, iRowid, bDesc); + rc = sqlite3Fts5ExprFirst(pCsr->pExpr, pTab->p.pIndex, iRowid, bDesc); if( rc==SQLITE_OK && iRowid!=sqlite3Fts5ExprRowid(pCsr->pExpr) ){ *pbSkip = 1; } @@ -205772,7 +243801,7 @@ static int fts5CursorReseek(Fts5Cursor *pCsr, int *pbSkip){ /* -** Advance the cursor to the next row in the table that matches the +** Advance the cursor to the next row in the table that matches the ** search criteria. ** ** Return SQLITE_OK if nothing goes wrong. SQLITE_OK is returned @@ -205784,7 +243813,7 @@ static int fts5NextMethod(sqlite3_vtab_cursor *pCursor){ int rc; assert( (pCsr->ePlan<3)== - (pCsr->ePlan==FTS5_PLAN_MATCH || pCsr->ePlan==FTS5_PLAN_SOURCE) + (pCsr->ePlan==FTS5_PLAN_MATCH || pCsr->ePlan==FTS5_PLAN_SOURCE) ); assert( !CsrFlagTest(pCsr, FTS5CSR_EOF) ); @@ -205801,31 +243830,40 @@ static int fts5NextMethod(sqlite3_vtab_cursor *pCursor){ rc = SQLITE_OK; break; } - + case FTS5_PLAN_SORTED_MATCH: { rc = fts5SorterNext(pCsr); break; } - - default: + + default: { + Fts5Config *pConfig = ((Fts5Table*)pCursor->pVtab)->pConfig; + pConfig->bLock++; rc = sqlite3_step(pCsr->pStmt); + pConfig->bLock--; if( rc!=SQLITE_ROW ){ CsrFlagSet(pCsr, FTS5CSR_EOF); rc = sqlite3_reset(pCsr->pStmt); + if( rc!=SQLITE_OK ){ + pCursor->pVtab->zErrMsg = sqlite3_mprintf( + "%s", sqlite3_errmsg(pConfig->db) + ); + } }else{ rc = SQLITE_OK; } break; + } } } - + return rc; } static int fts5PrepareStatement( sqlite3_stmt **ppStmt, - Fts5Config *pConfig, + Fts5Config *pConfig, const char *zFmt, ... ){ @@ -205837,9 +243875,9 @@ static int fts5PrepareStatement( va_start(ap, zFmt); zSql = sqlite3_vmprintf(zFmt, ap); if( zSql==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM; }else{ - rc = sqlite3_prepare_v3(pConfig->db, zSql, -1, + rc = sqlite3_prepare_v3(pConfig->db, zSql, -1, SQLITE_PREPARE_PERSISTENT, &pRet, 0); if( rc!=SQLITE_OK ){ *pConfig->pzErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(pConfig->db)); @@ -205850,33 +243888,37 @@ static int fts5PrepareStatement( va_end(ap); *ppStmt = pRet; return rc; -} +} -static int fts5CursorFirstSorted(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ - Fts5Config *pConfig = pTab->pConfig; +static int fts5CursorFirstSorted( + Fts5FullTable *pTab, + Fts5Cursor *pCsr, + int bDesc +){ + Fts5Config *pConfig = pTab->p.pConfig; Fts5Sorter *pSorter; int nPhrase; - int nByte; + sqlite3_int64 nByte; int rc; const char *zRank = pCsr->zRank; const char *zRankArgs = pCsr->zRankArgs; - + nPhrase = sqlite3Fts5ExprPhraseCount(pCsr->pExpr); nByte = sizeof(Fts5Sorter) + sizeof(int) * (nPhrase-1); - pSorter = (Fts5Sorter*)sqlite3_malloc(nByte); + pSorter = (Fts5Sorter*)sqlite3_malloc64(nByte); if( pSorter==0 ) return SQLITE_NOMEM; - memset(pSorter, 0, nByte); + memset(pSorter, 0, (size_t)nByte); pSorter->nIdx = nPhrase; /* TODO: It would be better to have some system for reusing statement ** handles here, rather than preparing a new one for each query. But that ** is not possible as SQLite reference counts the virtual table objects. - ** And since the statement required here reads from this very virtual + ** And since the statement required here reads from this very virtual ** table, saving it creates a circular reference. ** ** If SQLite a built-in statement cache, this wouldn't be a problem. */ rc = fts5PrepareStatement(&pSorter->pStmt, pConfig, - "SELECT rowid, rank FROM %Q.%Q ORDER BY %s(%s%s%s) %s", + "SELECT rowid, rank FROM %Q.%Q ORDER BY %s(\"%w\"%s%s) %s", pConfig->zDb, pConfig->zName, zRank, pConfig->zName, (zRankArgs ? ", " : ""), (zRankArgs ? zRankArgs : ""), @@ -205900,10 +243942,10 @@ static int fts5CursorFirstSorted(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ return rc; } -static int fts5CursorFirst(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ +static int fts5CursorFirst(Fts5FullTable *pTab, Fts5Cursor *pCsr, int bDesc){ int rc; Fts5Expr *pExpr = pCsr->pExpr; - rc = sqlite3Fts5ExprFirst(pExpr, pTab->pIndex, pCsr->iFirstRowid, bDesc); + rc = sqlite3Fts5ExprFirst(pExpr, pTab->p.pIndex, pCsr->iFirstRowid, bDesc); if( sqlite3Fts5ExprEof(pExpr) ){ CsrFlagSet(pCsr, FTS5CSR_EOF); } @@ -205918,8 +243960,8 @@ static int fts5CursorFirst(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ ** parameters. */ static int fts5SpecialMatch( - Fts5Table *pTab, - Fts5Cursor *pCsr, + Fts5FullTable *pTab, + Fts5Cursor *pCsr, const char *zQuery ){ int rc = SQLITE_OK; /* Return code */ @@ -205929,18 +243971,18 @@ static int fts5SpecialMatch( while( z[0]==' ' ) z++; for(n=0; z[n] && z[n]!=' '; n++); - assert( pTab->base.zErrMsg==0 ); + assert( pTab->p.base.zErrMsg==0 ); pCsr->ePlan = FTS5_PLAN_SPECIAL; - if( 0==sqlite3_strnicmp("reads", z, n) ){ - pCsr->iSpecial = sqlite3Fts5IndexReads(pTab->pIndex); + if( n==5 && 0==sqlite3_strnicmp("reads", z, n) ){ + pCsr->iSpecial = sqlite3Fts5IndexReads(pTab->p.pIndex); } - else if( 0==sqlite3_strnicmp("id", z, n) ){ + else if( n==2 && 0==sqlite3_strnicmp("id", z, n) ){ pCsr->iSpecial = pCsr->iCsrId; } else{ /* An unrecognized directive. Return an error message. */ - pTab->base.zErrMsg = sqlite3_mprintf("unknown special query: %.*s", n, z); + pTab->p.base.zErrMsg = sqlite3_mprintf("unknown special query: %.*s", n, z); rc = SQLITE_ERROR; } @@ -205952,7 +243994,7 @@ static int fts5SpecialMatch( ** pTab. If one is found, return a pointer to the corresponding Fts5Auxiliary ** structure. Otherwise, if no such function exists, return NULL. */ -static Fts5Auxiliary *fts5FindAuxiliary(Fts5Table *pTab, const char *zName){ +static Fts5Auxiliary *fts5FindAuxiliary(Fts5FullTable *pTab, const char *zName){ Fts5Auxiliary *pAux; for(pAux=pTab->pGlobal->pAux; pAux; pAux=pAux->pNext){ @@ -205965,8 +244007,8 @@ static Fts5Auxiliary *fts5FindAuxiliary(Fts5Table *pTab, const char *zName){ static int fts5FindRankFunction(Fts5Cursor *pCsr){ - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); + Fts5Config *pConfig = pTab->p.pConfig; int rc = SQLITE_OK; Fts5Auxiliary *pAux = 0; const char *zRank = pCsr->zRank; @@ -205982,7 +244024,7 @@ static int fts5FindRankFunction(Fts5Cursor *pCsr){ assert( rc==SQLITE_OK || pCsr->pRankArgStmt==0 ); if( rc==SQLITE_OK ){ if( SQLITE_ROW==sqlite3_step(pStmt) ){ - int nByte; + sqlite3_int64 nByte; pCsr->nRankArg = sqlite3_column_count(pStmt); nByte = sizeof(sqlite3_value*)*pCsr->nRankArg; pCsr->apRankArg = (sqlite3_value**)sqlite3Fts5MallocZero(&rc, nByte); @@ -206004,8 +244046,8 @@ static int fts5FindRankFunction(Fts5Cursor *pCsr){ if( rc==SQLITE_OK ){ pAux = fts5FindAuxiliary(pTab, zRank); if( pAux==0 ){ - assert( pTab->base.zErrMsg==0 ); - pTab->base.zErrMsg = sqlite3_mprintf("no such function: %s", zRank); + assert( pTab->p.base.zErrMsg==0 ); + pTab->p.base.zErrMsg = sqlite3_mprintf("no such function: %s", zRank); rc = SQLITE_ERROR; } } @@ -206017,7 +244059,7 @@ static int fts5FindRankFunction(Fts5Cursor *pCsr){ static int fts5CursorParseRank( Fts5Config *pConfig, - Fts5Cursor *pCsr, + Fts5Cursor *pCsr, sqlite3_value *pRank ){ int rc = SQLITE_OK; @@ -206066,7 +244108,7 @@ static i64 fts5GetRowidLimit(sqlite3_value *pVal, i64 iDefault){ ** This is the xFilter interface for the virtual table. See ** the virtual table xFilter method documentation for additional ** information. -** +** ** There are three possible query strategies: ** ** 1. Full-text search using a MATCH operator. @@ -206076,27 +244118,32 @@ static i64 fts5GetRowidLimit(sqlite3_value *pVal, i64 iDefault){ static int fts5FilterMethod( sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ int idxNum, /* Strategy index */ - const char *zUnused, /* Unused */ + const char *idxStr, /* Unused */ int nVal, /* Number of elements in apVal */ sqlite3_value **apVal /* Arguments for the indexing scheme */ ){ - Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)(pCursor->pVtab); + Fts5Config *pConfig = pTab->p.pConfig; Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; int rc = SQLITE_OK; /* Error code */ - int iVal = 0; /* Counter for apVal[] */ int bDesc; /* True if ORDER BY [rank|rowid] DESC */ int bOrderByRank; /* True if ORDER BY rank */ - sqlite3_value *pMatch = 0; /* MATCH ? expression (or NULL) */ sqlite3_value *pRank = 0; /* rank MATCH ? expression (or NULL) */ sqlite3_value *pRowidEq = 0; /* rowid = ? expression (or NULL) */ sqlite3_value *pRowidLe = 0; /* rowid <= ? expression (or NULL) */ sqlite3_value *pRowidGe = 0; /* rowid >= ? expression (or NULL) */ int iCol; /* Column on LHS of MATCH operator */ char **pzErrmsg = pConfig->pzErrmsg; + int i; + int iIdxStr = 0; + Fts5Expr *pExpr = 0; - UNUSED_PARAM(zUnused); - UNUSED_PARAM(nVal); + if( pConfig->bLock ){ + pTab->p.base.zErrMsg = sqlite3_mprintf( + "recursively defined fts5 content table" + ); + return SQLITE_ERROR; + } if( pCsr->ePlan ){ fts5FreeCursorComponents(pCsr); @@ -206109,27 +244156,78 @@ static int fts5FilterMethod( assert( pCsr->pRank==0 ); assert( pCsr->zRank==0 ); assert( pCsr->zRankArgs==0 ); + assert( pTab->pSortCsr==0 || nVal==0 ); - assert( pzErrmsg==0 || pzErrmsg==&pTab->base.zErrMsg ); - pConfig->pzErrmsg = &pTab->base.zErrMsg; + assert( pzErrmsg==0 || pzErrmsg==&pTab->p.base.zErrMsg ); + pConfig->pzErrmsg = &pTab->p.base.zErrMsg; - /* Decode the arguments passed through to this function. - ** - ** Note: The following set of if(...) statements must be in the same - ** order as the corresponding entries in the struct at the top of - ** fts5BestIndexMethod(). */ - if( BitFlagTest(idxNum, FTS5_BI_MATCH) ) pMatch = apVal[iVal++]; - if( BitFlagTest(idxNum, FTS5_BI_RANK) ) pRank = apVal[iVal++]; - if( BitFlagTest(idxNum, FTS5_BI_ROWID_EQ) ) pRowidEq = apVal[iVal++]; - if( BitFlagTest(idxNum, FTS5_BI_ROWID_LE) ) pRowidLe = apVal[iVal++]; - if( BitFlagTest(idxNum, FTS5_BI_ROWID_GE) ) pRowidGe = apVal[iVal++]; - iCol = (idxNum>>16); - assert( iCol>=0 && iCol<=pConfig->nCol ); - assert( iVal==nVal ); + /* Decode the arguments passed through to this function. */ + for(i=0; i='0' && idxStr[iIdxStr]<='9' ); + + if( zText[0]=='*' ){ + /* The user has issued a query of the form "MATCH '*...'". This + ** indicates that the MATCH expression is not a full text query, + ** but a request for an internal parameter. */ + rc = fts5SpecialMatch(pTab, pCsr, &zText[1]); + goto filter_out; + }else{ + char **pzErr = &pTab->p.base.zErrMsg; + rc = sqlite3Fts5ExprNew(pConfig, 0, iCol, zText, &pExpr, pzErr); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ExprAnd(&pCsr->pExpr, pExpr); + pExpr = 0; + } + if( rc!=SQLITE_OK ) goto filter_out; + } + + break; + } + case 'L': + case 'G': { + int bGlob = (idxStr[iIdxStr-1]=='G'); + const char *zText = (const char*)sqlite3_value_text(apVal[i]); + iCol = 0; + do{ + iCol = iCol*10 + (idxStr[iIdxStr]-'0'); + iIdxStr++; + }while( idxStr[iIdxStr]>='0' && idxStr[iIdxStr]<='9' ); + if( zText ){ + rc = sqlite3Fts5ExprPattern(pConfig, bGlob, iCol, zText, &pExpr); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ExprAnd(&pCsr->pExpr, pExpr); + pExpr = 0; + } + if( rc!=SQLITE_OK ) goto filter_out; + break; + } + case '=': + pRowidEq = apVal[i]; + break; + case '<': + pRowidLe = apVal[i]; + break; + default: assert( idxStr[iIdxStr-1]=='>' ); + pRowidGe = apVal[i]; + break; + } + } bOrderByRank = ((idxNum & FTS5_BI_ORDER_RANK) ? 1 : 0); pCsr->bDesc = bDesc = ((idxNum & FTS5_BI_ORDER_DESC) ? 1 : 0); - /* Set the cursor upper and lower rowid limits. Only some strategies + /* Set the cursor upper and lower rowid limits. Only some strategies ** actually use them. This is ok, as the xBestIndex() method leaves the ** sqlite3_index_constraint.omit flag clear for range constraints ** on the rowid field. */ @@ -206145,42 +244243,35 @@ static int fts5FilterMethod( } if( pTab->pSortCsr ){ - /* If pSortCsr is non-NULL, then this call is being made as part of + /* If pSortCsr is non-NULL, then this call is being made as part of ** processing for a "... MATCH ORDER BY rank" query (ePlan is ** set to FTS5_PLAN_SORTED_MATCH). pSortCsr is the cursor that will - ** return results to the user for this query. The current cursor - ** (pCursor) is used to execute the query issued by function + ** return results to the user for this query. The current cursor + ** (pCursor) is used to execute the query issued by function ** fts5CursorFirstSorted() above. */ assert( pRowidEq==0 && pRowidLe==0 && pRowidGe==0 && pRank==0 ); - assert( nVal==0 && pMatch==0 && bOrderByRank==0 && bDesc==0 ); + assert( nVal==0 && bOrderByRank==0 && bDesc==0 ); assert( pCsr->iLastRowid==LARGEST_INT64 ); assert( pCsr->iFirstRowid==SMALLEST_INT64 ); + if( pTab->pSortCsr->bDesc ){ + pCsr->iLastRowid = pTab->pSortCsr->iFirstRowid; + pCsr->iFirstRowid = pTab->pSortCsr->iLastRowid; + }else{ + pCsr->iLastRowid = pTab->pSortCsr->iLastRowid; + pCsr->iFirstRowid = pTab->pSortCsr->iFirstRowid; + } pCsr->ePlan = FTS5_PLAN_SOURCE; pCsr->pExpr = pTab->pSortCsr->pExpr; rc = fts5CursorFirst(pTab, pCsr, bDesc); - }else if( pMatch ){ - const char *zExpr = (const char*)sqlite3_value_text(apVal[0]); - if( zExpr==0 ) zExpr = ""; - + }else if( pCsr->pExpr ){ rc = fts5CursorParseRank(pConfig, pCsr, pRank); if( rc==SQLITE_OK ){ - if( zExpr[0]=='*' ){ - /* The user has issued a query of the form "MATCH '*...'". This - ** indicates that the MATCH expression is not a full text query, - ** but a request for an internal parameter. */ - rc = fts5SpecialMatch(pTab, pCsr, &zExpr[1]); + if( bOrderByRank ){ + pCsr->ePlan = FTS5_PLAN_SORTED_MATCH; + rc = fts5CursorFirstSorted(pTab, pCsr, bDesc); }else{ - char **pzErr = &pTab->base.zErrMsg; - rc = sqlite3Fts5ExprNew(pConfig, iCol, zExpr, &pCsr->pExpr, pzErr); - if( rc==SQLITE_OK ){ - if( bOrderByRank ){ - pCsr->ePlan = FTS5_PLAN_SORTED_MATCH; - rc = fts5CursorFirstSorted(pTab, pCsr, bDesc); - }else{ - pCsr->ePlan = FTS5_PLAN_MATCH; - rc = fts5CursorFirst(pTab, pCsr, bDesc); - } - } + pCsr->ePlan = FTS5_PLAN_MATCH; + rc = fts5CursorFirst(pTab, pCsr, bDesc); } } }else if( pConfig->zContent==0 ){ @@ -206193,11 +244284,12 @@ static int fts5FilterMethod( ** by rowid (ePlan==FTS5_PLAN_ROWID). */ pCsr->ePlan = (pRowidEq ? FTS5_PLAN_ROWID : FTS5_PLAN_SCAN); rc = sqlite3Fts5StorageStmt( - pTab->pStorage, fts5StmtType(pCsr), &pCsr->pStmt, &pTab->base.zErrMsg + pTab->pStorage, fts5StmtType(pCsr), &pCsr->pStmt, &pTab->p.base.zErrMsg ); if( rc==SQLITE_OK ){ - if( pCsr->ePlan==FTS5_PLAN_ROWID ){ - sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]); + if( pRowidEq!=0 ){ + assert( pCsr->ePlan==FTS5_PLAN_ROWID ); + sqlite3_bind_value(pCsr->pStmt, 1, pRowidEq); }else{ sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iFirstRowid); sqlite3_bind_int64(pCsr->pStmt, 2, pCsr->iLastRowid); @@ -206206,12 +244298,14 @@ static int fts5FilterMethod( } } + filter_out: + sqlite3Fts5ExprFree(pExpr); pConfig->pzErrmsg = pzErrmsg; return rc; } -/* -** This is the xEof method of the virtual table. SQLite calls this +/* +** This is the xEof method of the virtual table. SQLite calls this ** routine to find out if it has reached the end of a result set. */ static int fts5EofMethod(sqlite3_vtab_cursor *pCursor){ @@ -206223,9 +244317,9 @@ static int fts5EofMethod(sqlite3_vtab_cursor *pCursor){ ** Return the rowid that the cursor currently points to. */ static i64 fts5CursorRowid(Fts5Cursor *pCsr){ - assert( pCsr->ePlan==FTS5_PLAN_MATCH - || pCsr->ePlan==FTS5_PLAN_SORTED_MATCH - || pCsr->ePlan==FTS5_PLAN_SOURCE + assert( pCsr->ePlan==FTS5_PLAN_MATCH + || pCsr->ePlan==FTS5_PLAN_SORTED_MATCH + || pCsr->ePlan==FTS5_PLAN_SOURCE ); if( pCsr->pSorter ){ return pCsr->pSorter->iRowid; @@ -206234,7 +244328,7 @@ static i64 fts5CursorRowid(Fts5Cursor *pCsr){ } } -/* +/* ** This is the xRowid method. The SQLite core calls this routine to ** retrieve the rowid for the current row of the result set. fts5 ** exposes %_content.rowid as the rowid for the virtual table. The @@ -206243,7 +244337,7 @@ static i64 fts5CursorRowid(Fts5Cursor *pCsr){ static int fts5RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; int ePlan = pCsr->ePlan; - + assert( CsrFlagTest(pCsr, FTS5CSR_EOF)==0 ); switch( ePlan ){ case FTS5_PLAN_SPECIAL: @@ -206274,22 +244368,25 @@ static int fts5RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ static int fts5SeekCursor(Fts5Cursor *pCsr, int bErrormsg){ int rc = SQLITE_OK; - /* If the cursor does not yet have a statement handle, obtain one now. */ + /* If the cursor does not yet have a statement handle, obtain one now. */ if( pCsr->pStmt==0 ){ - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); int eStmt = fts5StmtType(pCsr); rc = sqlite3Fts5StorageStmt( - pTab->pStorage, eStmt, &pCsr->pStmt, (bErrormsg?&pTab->base.zErrMsg:0) + pTab->pStorage, eStmt, &pCsr->pStmt, (bErrormsg?&pTab->p.base.zErrMsg:0) ); - assert( rc!=SQLITE_OK || pTab->base.zErrMsg==0 ); + assert( rc!=SQLITE_OK || pTab->p.base.zErrMsg==0 ); assert( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_CONTENT) ); } if( rc==SQLITE_OK && CsrFlagTest(pCsr, FTS5CSR_REQUIRE_CONTENT) ){ + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); assert( pCsr->pExpr ); sqlite3_reset(pCsr->pStmt); sqlite3_bind_int64(pCsr->pStmt, 1, fts5CursorRowid(pCsr)); + pTab->pConfig->bLock++; rc = sqlite3_step(pCsr->pStmt); + pTab->pConfig->bLock--; if( rc==SQLITE_ROW ){ rc = SQLITE_OK; CsrFlagClear(pCsr, FTS5CSR_REQUIRE_CONTENT); @@ -206297,17 +244394,21 @@ static int fts5SeekCursor(Fts5Cursor *pCsr, int bErrormsg){ rc = sqlite3_reset(pCsr->pStmt); if( rc==SQLITE_OK ){ rc = FTS5_CORRUPT; + }else if( pTab->pConfig->pzErrmsg ){ + *pTab->pConfig->pzErrmsg = sqlite3_mprintf( + "%s", sqlite3_errmsg(pTab->pConfig->db) + ); } } } return rc; } -static void fts5SetVtabError(Fts5Table *p, const char *zFormat, ...){ +static void fts5SetVtabError(Fts5FullTable *p, const char *zFormat, ...){ va_list ap; /* ... printf arguments */ va_start(ap, zFormat); - assert( p->base.zErrMsg==0 ); - p->base.zErrMsg = sqlite3_vmprintf(zFormat, ap); + assert( p->p.base.zErrMsg==0 ); + p->p.base.zErrMsg = sqlite3_vmprintf(zFormat, ap); va_end(ap); } @@ -206318,7 +244419,7 @@ static void fts5SetVtabError(Fts5Table *p, const char *zFormat, ...){ ** INSERT INTO fts(fts) VALUES($pCmd) ** INSERT INTO fts(fts, rank) VALUES($pCmd, $pVal) ** -** Argument pVal is the value assigned to column "fts" by the INSERT +** Argument pVal is the value assigned to column "fts" by the INSERT ** statement. This function returns SQLITE_OK if successful, or an SQLite ** error code if an error occurs. ** @@ -206327,17 +244428,17 @@ static void fts5SetVtabError(Fts5Table *p, const char *zFormat, ...){ ** more commands are added to this function. */ static int fts5SpecialInsert( - Fts5Table *pTab, /* Fts5 table object */ + Fts5FullTable *pTab, /* Fts5 table object */ const char *zCmd, /* Text inserted into table-name column */ sqlite3_value *pVal /* Value inserted into rank column */ ){ - Fts5Config *pConfig = pTab->pConfig; + Fts5Config *pConfig = pTab->p.pConfig; int rc = SQLITE_OK; int bError = 0; if( 0==sqlite3_stricmp("delete-all", zCmd) ){ if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ - fts5SetVtabError(pTab, + fts5SetVtabError(pTab, "'delete-all' may only be used with a " "contentless or external content fts5 table" ); @@ -206347,7 +244448,7 @@ static int fts5SpecialInsert( } }else if( 0==sqlite3_stricmp("rebuild", zCmd) ){ if( pConfig->eContent==FTS5_CONTENT_NONE ){ - fts5SetVtabError(pTab, + fts5SetVtabError(pTab, "'rebuild' may not be used with a contentless fts5 table" ); rc = SQLITE_ERROR; @@ -206360,15 +244461,16 @@ static int fts5SpecialInsert( int nMerge = sqlite3_value_int(pVal); rc = sqlite3Fts5StorageMerge(pTab->pStorage, nMerge); }else if( 0==sqlite3_stricmp("integrity-check", zCmd) ){ - rc = sqlite3Fts5StorageIntegrity(pTab->pStorage); + int iArg = sqlite3_value_int(pVal); + rc = sqlite3Fts5StorageIntegrity(pTab->pStorage, iArg); #ifdef SQLITE_DEBUG }else if( 0==sqlite3_stricmp("prefix-index", zCmd) ){ pConfig->bPrefixIndex = sqlite3_value_int(pVal); #endif }else{ - rc = sqlite3Fts5IndexLoadConfig(pTab->pIndex); + rc = sqlite3Fts5IndexLoadConfig(pTab->p.pIndex); if( rc==SQLITE_OK ){ - rc = sqlite3Fts5ConfigSetValue(pTab->pConfig, zCmd, pVal, &bError); + rc = sqlite3Fts5ConfigSetValue(pTab->p.pConfig, zCmd, pVal, &bError); } if( rc==SQLITE_OK ){ if( bError ){ @@ -206382,7 +244484,7 @@ static int fts5SpecialInsert( } static int fts5SpecialDelete( - Fts5Table *pTab, + Fts5FullTable *pTab, sqlite3_value **apVal ){ int rc = SQLITE_OK; @@ -206395,9 +244497,9 @@ static int fts5SpecialDelete( } static void fts5StorageInsert( - int *pRc, - Fts5Table *pTab, - sqlite3_value **apVal, + int *pRc, + Fts5FullTable *pTab, + sqlite3_value **apVal, i64 *piRowid ){ int rc = *pRc; @@ -206410,13 +244512,13 @@ static void fts5StorageInsert( *pRc = rc; } -/* -** This function is the implementation of the xUpdate callback used by +/* +** This function is the implementation of the xUpdate callback used by ** FTS3 virtual tables. It is invoked by SQLite each time a row is to be ** inserted, updated or deleted. ** ** A delete specifies a single argument - the rowid of the row to remove. -** +** ** Update and insert operations pass: ** ** 1. The "old" rowid, or NULL. @@ -206430,42 +244532,54 @@ static int fts5UpdateMethod( sqlite3_value **apVal, /* Array of arguments */ sqlite_int64 *pRowid /* OUT: The affected (or effected) rowid */ ){ - Fts5Table *pTab = (Fts5Table*)pVtab; - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; + Fts5Config *pConfig = pTab->p.pConfig; int eType0; /* value_type() of apVal[0] */ int rc = SQLITE_OK; /* Return code */ + int bUpdateOrDelete = 0; /* A transaction must be open when this is called. */ - assert( pTab->ts.eState==1 ); + assert( pTab->ts.eState==1 || pTab->ts.eState==2 ); assert( pVtab->zErrMsg==0 ); assert( nArg==1 || nArg==(2+pConfig->nCol+2) ); - assert( nArg==1 - || sqlite3_value_type(apVal[1])==SQLITE_INTEGER - || sqlite3_value_type(apVal[1])==SQLITE_NULL + assert( sqlite3_value_type(apVal[0])==SQLITE_INTEGER + || sqlite3_value_type(apVal[0])==SQLITE_NULL ); - assert( pTab->pConfig->pzErrmsg==0 ); - pTab->pConfig->pzErrmsg = &pTab->base.zErrMsg; + assert( pTab->p.pConfig->pzErrmsg==0 ); + if( pConfig->pgsz==0 ){ + rc = sqlite3Fts5IndexLoadConfig(pTab->p.pIndex); + if( rc!=SQLITE_OK ) return rc; + } + + pTab->p.pConfig->pzErrmsg = &pTab->p.base.zErrMsg; /* Put any active cursors into REQUIRE_SEEK state. */ fts5TripCursors(pTab); eType0 = sqlite3_value_type(apVal[0]); - if( eType0==SQLITE_NULL - && sqlite3_value_type(apVal[2+pConfig->nCol])!=SQLITE_NULL + if( eType0==SQLITE_NULL + && sqlite3_value_type(apVal[2+pConfig->nCol])!=SQLITE_NULL ){ /* A "special" INSERT op. These are handled separately. */ const char *z = (const char*)sqlite3_value_text(apVal[2+pConfig->nCol]); - if( pConfig->eContent!=FTS5_CONTENT_NORMAL - && 0==sqlite3_stricmp("delete", z) + if( pConfig->eContent!=FTS5_CONTENT_NORMAL + && 0==sqlite3_stricmp("delete", z) ){ - rc = fts5SpecialDelete(pTab, apVal); + if( pConfig->bContentlessDelete ){ + fts5SetVtabError(pTab, + "'delete' may not be used with a contentless_delete=1 table" + ); + rc = SQLITE_ERROR; + }else{ + rc = fts5SpecialDelete(pTab, apVal); + } }else{ rc = fts5SpecialInsert(pTab, z, apVal[2 + pConfig->nCol + 1]); } }else{ /* A regular INSERT, UPDATE or DELETE statement. The trick here is that - ** any conflict on the rowid value must be detected before any + ** any conflict on the rowid value must be detected before any ** modifications are made to the database file. There are 4 cases: ** ** 1) DELETE @@ -206476,7 +244590,7 @@ static int fts5UpdateMethod( ** Cases 3 and 4 may violate the rowid constraint. */ int eConflict = SQLITE_ABORT; - if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ + if( pConfig->eContent==FTS5_CONTENT_NORMAL || pConfig->bContentlessDelete ){ eConflict = sqlite3_vtab_on_conflict(pConfig->db); } @@ -206484,10 +244598,14 @@ static int fts5UpdateMethod( assert( nArg!=1 || eType0==SQLITE_INTEGER ); /* Filter out attempts to run UPDATE or DELETE on contentless tables. - ** This is not suported. */ - if( eType0==SQLITE_INTEGER && fts5IsContentless(pTab) ){ - pTab->base.zErrMsg = sqlite3_mprintf( - "cannot %s contentless fts5 table: %s", + ** This is not suported. Except - DELETE is supported if the CREATE + ** VIRTUAL TABLE statement contained "contentless_delete=1". */ + if( eType0==SQLITE_INTEGER + && pConfig->eContent==FTS5_CONTENT_NONE + && pConfig->bContentlessDelete==0 + ){ + pTab->p.base.zErrMsg = sqlite3_mprintf( + "cannot %s contentless fts5 table: %s", (nArg>1 ? "UPDATE" : "DELETE from"), pConfig->zName ); rc = SQLITE_ERROR; @@ -206497,71 +244615,92 @@ static int fts5UpdateMethod( else if( nArg==1 ){ i64 iDel = sqlite3_value_int64(apVal[0]); /* Rowid to delete */ rc = sqlite3Fts5StorageDelete(pTab->pStorage, iDel, 0); + bUpdateOrDelete = 1; } - /* INSERT */ - else if( eType0!=SQLITE_INTEGER ){ - /* If this is a REPLACE, first remove the current entry (if any) */ - if( eConflict==SQLITE_REPLACE - && sqlite3_value_type(apVal[1])==SQLITE_INTEGER - ){ - i64 iNew = sqlite3_value_int64(apVal[1]); /* Rowid to delete */ - rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew, 0); - } - fts5StorageInsert(&rc, pTab, apVal, pRowid); - } - - /* UPDATE */ + /* INSERT or UPDATE */ else{ - i64 iOld = sqlite3_value_int64(apVal[0]); /* Old rowid */ - i64 iNew = sqlite3_value_int64(apVal[1]); /* New rowid */ - if( iOld!=iNew ){ - if( eConflict==SQLITE_REPLACE ){ - rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); - if( rc==SQLITE_OK ){ - rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew, 0); - } - fts5StorageInsert(&rc, pTab, apVal, pRowid); - }else{ - rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, apVal, pRowid); - if( rc==SQLITE_OK ){ - rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); - } - if( rc==SQLITE_OK ){ - rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal, *pRowid); - } + int eType1 = sqlite3_value_numeric_type(apVal[1]); + + if( eType1!=SQLITE_INTEGER && eType1!=SQLITE_NULL ){ + rc = SQLITE_MISMATCH; + } + + else if( eType0!=SQLITE_INTEGER ){ + /* If this is a REPLACE, first remove the current entry (if any) */ + if( eConflict==SQLITE_REPLACE && eType1==SQLITE_INTEGER ){ + i64 iNew = sqlite3_value_int64(apVal[1]); /* Rowid to delete */ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew, 0); + bUpdateOrDelete = 1; } - }else{ - rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); fts5StorageInsert(&rc, pTab, apVal, pRowid); } + + /* UPDATE */ + else{ + i64 iOld = sqlite3_value_int64(apVal[0]); /* Old rowid */ + i64 iNew = sqlite3_value_int64(apVal[1]); /* New rowid */ + if( eType1==SQLITE_INTEGER && iOld!=iNew ){ + if( eConflict==SQLITE_REPLACE ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew, 0); + } + fts5StorageInsert(&rc, pTab, apVal, pRowid); + }else{ + rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, apVal, pRowid); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal,*pRowid); + } + } + }else{ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0); + fts5StorageInsert(&rc, pTab, apVal, pRowid); + } + bUpdateOrDelete = 1; + } } } - pTab->pConfig->pzErrmsg = 0; + if( rc==SQLITE_OK + && bUpdateOrDelete + && pConfig->bSecureDelete + && pConfig->iVersion==FTS5_CURRENT_VERSION + ){ + rc = sqlite3Fts5StorageConfigValue( + pTab->pStorage, "version", 0, FTS5_CURRENT_VERSION_SECUREDELETE + ); + if( rc==SQLITE_OK ){ + pConfig->iVersion = FTS5_CURRENT_VERSION_SECUREDELETE; + } + } + + pTab->p.pConfig->pzErrmsg = 0; return rc; } /* -** Implementation of xSync() method. +** Implementation of xSync() method. */ static int fts5SyncMethod(sqlite3_vtab *pVtab){ int rc; - Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; fts5CheckTransactionState(pTab, FTS5_SYNC, 0); - pTab->pConfig->pzErrmsg = &pTab->base.zErrMsg; - fts5TripCursors(pTab); - rc = sqlite3Fts5StorageSync(pTab->pStorage); - pTab->pConfig->pzErrmsg = 0; + pTab->p.pConfig->pzErrmsg = &pTab->p.base.zErrMsg; + rc = sqlite3Fts5FlushToDisk(&pTab->p); + pTab->p.pConfig->pzErrmsg = 0; return rc; } /* -** Implementation of xBegin() method. +** Implementation of xBegin() method. */ static int fts5BeginMethod(sqlite3_vtab *pVtab){ - fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_BEGIN, 0); - fts5NewTransaction((Fts5Table*)pVtab); + fts5CheckTransactionState((Fts5FullTable*)pVtab, FTS5_BEGIN, 0); + fts5NewTransaction((Fts5FullTable*)pVtab); return SQLITE_OK; } @@ -206572,7 +244711,7 @@ static int fts5BeginMethod(sqlite3_vtab *pVtab){ */ static int fts5CommitMethod(sqlite3_vtab *pVtab){ UNUSED_PARAM(pVtab); /* Call below is a no-op for NDEBUG builds */ - fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_COMMIT, 0); + fts5CheckTransactionState((Fts5FullTable*)pVtab, FTS5_COMMIT, 0); return SQLITE_OK; } @@ -206582,7 +244721,7 @@ static int fts5CommitMethod(sqlite3_vtab *pVtab){ */ static int fts5RollbackMethod(sqlite3_vtab *pVtab){ int rc; - Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; fts5CheckTransactionState(pTab, FTS5_ROLLBACK, 0); rc = sqlite3Fts5StorageRollback(pTab->pStorage); return rc; @@ -206601,24 +244740,24 @@ static int fts5ApiColumnCount(Fts5Context *pCtx){ } static int fts5ApiColumnTotalSize( - Fts5Context *pCtx, - int iCol, + Fts5Context *pCtx, + int iCol, sqlite3_int64 *pnToken ){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); return sqlite3Fts5StorageSize(pTab->pStorage, iCol, pnToken); } static int fts5ApiRowCount(Fts5Context *pCtx, i64 *pnRow){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); return sqlite3Fts5StorageRowCount(pTab->pStorage, pnRow); } static int fts5ApiTokenize( - Fts5Context *pCtx, - const char *pText, int nText, + Fts5Context *pCtx, + const char *pText, int nText, void *pUserData, int (*xToken)(void*, int, const char*, int, int, int) ){ @@ -206640,14 +244779,16 @@ static int fts5ApiPhraseSize(Fts5Context *pCtx, int iPhrase){ } static int fts5ApiColumnText( - Fts5Context *pCtx, - int iCol, - const char **pz, + Fts5Context *pCtx, + int iCol, + const char **pz, int *pn ){ int rc = SQLITE_OK; Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; - if( fts5IsContentless((Fts5Table*)(pCsr->base.pVtab)) ){ + if( fts5IsContentless((Fts5FullTable*)(pCsr->base.pVtab)) + || pCsr->ePlan==FTS5_PLAN_SPECIAL + ){ *pz = 0; *pn = 0; }else{ @@ -206661,8 +244802,8 @@ static int fts5ApiColumnText( } static int fts5CsrPoslist( - Fts5Cursor *pCsr, - int iPhrase, + Fts5Cursor *pCsr, + int iPhrase, const u8 **pa, int *pn ){ @@ -206716,10 +244857,11 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){ int rc = SQLITE_OK; Fts5PoslistReader *aIter; /* One iterator for each phrase */ int nIter; /* Number of iterators/phrases */ - + int nCol = ((Fts5Table*)pCsr->base.pVtab)->pConfig->nCol; + nIter = sqlite3Fts5ExprPhraseCount(pCsr->pExpr); if( pCsr->aInstIter==0 ){ - int nByte = sizeof(Fts5PoslistReader) * nIter; + sqlite3_int64 nByte = sizeof(Fts5PoslistReader) * nIter; pCsr->aInstIter = (Fts5PoslistReader*)sqlite3Fts5MallocZero(&rc, nByte); } aIter = pCsr->aInstIter; @@ -206731,7 +244873,7 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){ /* Initialize all iterators */ for(i=0; i=pCsr->nInstAlloc ){ - pCsr->nInstAlloc = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32; - aInst = (int*)sqlite3_realloc( - pCsr->aInst, pCsr->nInstAlloc*sizeof(int)*3 + int nNewSize = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32; + aInst = (int*)sqlite3_realloc64( + pCsr->aInst, nNewSize*sizeof(int)*3 ); if( aInst ){ pCsr->aInst = aInst; + pCsr->nInstAlloc = nNewSize; }else{ + nInst--; rc = SQLITE_NOMEM; break; } @@ -206769,6 +244913,10 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){ aInst[0] = iBest; aInst[1] = FTS5_POS2COLUMN(aIter[iBest].iPos); aInst[2] = FTS5_POS2OFFSET(aIter[iBest].iPos); + if( aInst[1]<0 || aInst[1]>=nCol ){ + rc = FTS5_CORRUPT; + break; + } sqlite3Fts5PoslistReaderNext(&aIter[iBest]); } } @@ -206782,7 +244930,7 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){ static int fts5ApiInstCount(Fts5Context *pCtx, int *pnInst){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; int rc = SQLITE_OK; - if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 || SQLITE_OK==(rc = fts5CacheInstArray(pCsr)) ){ *pnInst = pCsr->nInstCount; } @@ -206790,16 +244938,16 @@ static int fts5ApiInstCount(Fts5Context *pCtx, int *pnInst){ } static int fts5ApiInst( - Fts5Context *pCtx, - int iIdx, - int *piPhrase, - int *piCol, + Fts5Context *pCtx, + int iIdx, + int *piPhrase, + int *piCol, int *piOff ){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; int rc = SQLITE_OK; - if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 - || SQLITE_OK==(rc = fts5CacheInstArray(pCsr)) + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 + || SQLITE_OK==(rc = fts5CacheInstArray(pCsr)) ){ if( iIdx<0 || iIdx>=pCsr->nInstCount ){ rc = SQLITE_RANGE; @@ -206841,8 +244989,8 @@ static int fts5ColumnSizeCb( static int fts5ApiColumnSize(Fts5Context *pCtx, int iCol, int *pnToken){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); + Fts5Config *pConfig = pTab->p.pConfig; int rc = SQLITE_OK; if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_DOCSIZE) ){ @@ -206948,8 +245096,8 @@ static void *fts5ApiGetAuxdata(Fts5Context *pCtx, int bClear){ } static void fts5ApiPhraseNext( - Fts5Context *pUnused, - Fts5PhraseIter *pIter, + Fts5Context *pUnused, + Fts5PhraseIter *pIter, int *piCol, int *piOff ){ UNUSED_PARAM(pUnused); @@ -206970,16 +245118,17 @@ static void fts5ApiPhraseNext( } static int fts5ApiPhraseFirst( - Fts5Context *pCtx, - int iPhrase, - Fts5PhraseIter *pIter, + Fts5Context *pCtx, + int iPhrase, + Fts5PhraseIter *pIter, int *piCol, int *piOff ){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; int n; int rc = fts5CsrPoslist(pCsr, iPhrase, &pIter->a, &n); if( rc==SQLITE_OK ){ - pIter->b = &pIter->a[n]; + assert( pIter->a || n==0 ); + pIter->b = (pIter->a ? &pIter->a[n] : 0); *piCol = 0; *piOff = 0; fts5ApiPhraseNext(pCtx, pIter, piCol, piOff); @@ -206988,8 +245137,8 @@ static int fts5ApiPhraseFirst( } static void fts5ApiPhraseNextColumn( - Fts5Context *pCtx, - Fts5PhraseIter *pIter, + Fts5Context *pCtx, + Fts5PhraseIter *pIter, int *piCol ){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; @@ -207018,9 +245167,9 @@ static void fts5ApiPhraseNextColumn( } static int fts5ApiPhraseFirstColumn( - Fts5Context *pCtx, - int iPhrase, - Fts5PhraseIter *pIter, + Fts5Context *pCtx, + int iPhrase, + Fts5PhraseIter *pIter, int *piCol ){ int rc = SQLITE_OK; @@ -207038,7 +245187,8 @@ static int fts5ApiPhraseFirstColumn( rc = sqlite3Fts5ExprPhraseCollist(pCsr->pExpr, iPhrase, &pIter->a, &n); } if( rc==SQLITE_OK ){ - pIter->b = &pIter->a[n]; + assert( pIter->a || n==0 ); + pIter->b = (pIter->a ? &pIter->a[n] : 0); *piCol = 0; fts5ApiPhraseNextColumn(pCtx, pIter, piCol); } @@ -207046,7 +245196,8 @@ static int fts5ApiPhraseFirstColumn( int n; rc = fts5CsrPoslist(pCsr, iPhrase, &pIter->a, &n); if( rc==SQLITE_OK ){ - pIter->b = &pIter->a[n]; + assert( pIter->a || n==0 ); + pIter->b = (pIter->a ? &pIter->a[n] : 0); if( n<=0 ){ *piCol = -1; }else if( pIter->a[0]==0x01 ){ @@ -207061,7 +245212,7 @@ static int fts5ApiPhraseFirstColumn( } -static int fts5ApiQueryPhrase(Fts5Context*, int, void*, +static int fts5ApiQueryPhrase(Fts5Context*, int, void*, int(*)(const Fts5ExtensionApi*, Fts5Context*, void*) ); @@ -207092,13 +245243,13 @@ static const Fts5ExtensionApi sFts5Api = { ** Implementation of API function xQueryPhrase(). */ static int fts5ApiQueryPhrase( - Fts5Context *pCtx, - int iPhrase, + Fts5Context *pCtx, + int iPhrase, void *pUserData, int(*xCallback)(const Fts5ExtensionApi*, Fts5Context*, void*) ){ Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; - Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5FullTable *pTab = (Fts5FullTable*)(pCsr->base.pVtab); int rc; Fts5Cursor *pNew = 0; @@ -207164,7 +245315,7 @@ static void fts5ApiCallback( iCsrId = sqlite3_value_int64(argv[0]); pCsr = fts5CursorFromCsrid(pAux->pGlobal, iCsrId); - if( pCsr==0 ){ + if( pCsr==0 || pCsr->ePlan==0 ){ char *zErr = sqlite3_mprintf("no such cursor: %lld", iCsrId); sqlite3_result_error(context, zErr, -1); sqlite3_free(zErr); @@ -207175,25 +245326,19 @@ static void fts5ApiCallback( /* -** Given cursor id iId, return a pointer to the corresponding Fts5Index +** Given cursor id iId, return a pointer to the corresponding Fts5Table ** object. Or NULL If the cursor id does not exist. -** -** If successful, set *ppConfig to point to the associated config object -** before returning. */ -static Fts5Index *sqlite3Fts5IndexFromCsrid( +static Fts5Table *sqlite3Fts5TableFromCsrid( Fts5Global *pGlobal, /* FTS5 global context for db handle */ - i64 iCsrId, /* Id of cursor to find */ - Fts5Config **ppConfig /* OUT: Configuration object */ + i64 iCsrId /* Id of cursor to find */ ){ Fts5Cursor *pCsr; - Fts5Table *pTab; - pCsr = fts5CursorFromCsrid(pGlobal, iCsrId); - pTab = (Fts5Table*)pCsr->base.pVtab; - *ppConfig = pTab->pConfig; - - return pTab->pIndex; + if( pCsr ){ + return (Fts5Table*)pCsr->base.pVtab; + } + return 0; } /* @@ -207264,7 +245409,7 @@ static int fts5PoslistBlob(sqlite3_context *pCtx, Fts5Cursor *pCsr){ return rc; } -/* +/* ** This is the xColumn method, called by SQLite to request a value from ** the row that the supplied cursor currently points to. */ @@ -207273,11 +245418,11 @@ static int fts5ColumnMethod( sqlite3_context *pCtx, /* Context for sqlite3_result_xxx() calls */ int iCol /* Index of column to read value from */ ){ - Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); - Fts5Config *pConfig = pTab->pConfig; + Fts5FullTable *pTab = (Fts5FullTable*)(pCursor->pVtab); + Fts5Config *pConfig = pTab->p.pConfig; Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; int rc = SQLITE_OK; - + assert( CsrFlagTest(pCsr, FTS5CSR_EOF)==0 ); if( pCsr->ePlan==FTS5_PLAN_SPECIAL ){ @@ -207297,7 +245442,7 @@ static int fts5ColumnMethod( /* The value of the "rank" column. */ if( pCsr->ePlan==FTS5_PLAN_SOURCE ){ fts5PoslistBlob(pCtx, pCsr); - }else if( + }else if( pCsr->ePlan==FTS5_PLAN_MATCH || pCsr->ePlan==FTS5_PLAN_SORTED_MATCH ){ @@ -207306,10 +245451,18 @@ static int fts5ColumnMethod( } } }else if( !fts5IsContentless(pTab) ){ + pConfig->pzErrmsg = &pTab->p.base.zErrMsg; rc = fts5SeekCursor(pCsr, 1); if( rc==SQLITE_OK ){ sqlite3_result_value(pCtx, sqlite3_column_value(pCsr->pStmt, iCol+1)); } + pConfig->pzErrmsg = 0; + }else if( pConfig->bContentlessDelete && sqlite3_vtab_nochange(pCtx) ){ + char *zErr = sqlite3_mprintf("cannot UPDATE a subset of " + "columns on fts5 contentless-delete table: %s", pConfig->zName + ); + sqlite3_result_error(pCtx, zErr, -1); + sqlite3_free(zErr); } return rc; } @@ -207326,7 +245479,7 @@ static int fts5FindFunctionMethod( void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), /* OUT: Result */ void **ppArg /* OUT: User data for *pxFunc */ ){ - Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; Fts5Auxiliary *pAux; UNUSED_PARAM(nUnused); @@ -207348,21 +245501,24 @@ static int fts5RenameMethod( sqlite3_vtab *pVtab, /* Virtual table handle */ const char *zName /* New name of table */ ){ - Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; return sqlite3Fts5StorageRename(pTab->pStorage, zName); } +static int sqlite3Fts5FlushToDisk(Fts5Table *pTab){ + fts5TripCursors((Fts5FullTable*)pTab); + return sqlite3Fts5StorageSync(((Fts5FullTable*)pTab)->pStorage); +} + /* ** The xSavepoint() method. ** ** Flush the contents of the pending-terms table to disk. */ static int fts5SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){ - Fts5Table *pTab = (Fts5Table*)pVtab; UNUSED_PARAM(iSavepoint); /* Call below is a no-op for NDEBUG builds */ - fts5CheckTransactionState(pTab, FTS5_SAVEPOINT, iSavepoint); - fts5TripCursors(pTab); - return sqlite3Fts5StorageSync(pTab->pStorage); + fts5CheckTransactionState((Fts5FullTable*)pVtab, FTS5_SAVEPOINT, iSavepoint); + return sqlite3Fts5FlushToDisk((Fts5Table*)pVtab); } /* @@ -207371,11 +245527,9 @@ static int fts5SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){ ** This is a no-op. */ static int fts5ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){ - Fts5Table *pTab = (Fts5Table*)pVtab; UNUSED_PARAM(iSavepoint); /* Call below is a no-op for NDEBUG builds */ - fts5CheckTransactionState(pTab, FTS5_RELEASE, iSavepoint); - fts5TripCursors(pTab); - return sqlite3Fts5StorageSync(pTab->pStorage); + fts5CheckTransactionState((Fts5FullTable*)pVtab, FTS5_RELEASE, iSavepoint); + return sqlite3Fts5FlushToDisk((Fts5Table*)pVtab); } /* @@ -207384,10 +245538,11 @@ static int fts5ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){ ** Discard the contents of the pending terms table. */ static int fts5RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){ - Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5FullTable *pTab = (Fts5FullTable*)pVtab; UNUSED_PARAM(iSavepoint); /* Call below is a no-op for NDEBUG builds */ fts5CheckTransactionState(pTab, FTS5_ROLLBACKTO, iSavepoint); fts5TripCursors(pTab); + pTab->p.pConfig->pgsz = 0; return sqlite3Fts5StorageRollback(pTab->pStorage); } @@ -207405,14 +245560,14 @@ static int fts5CreateAux( int rc = sqlite3_overload_function(pGlobal->db, zName, -1); if( rc==SQLITE_OK ){ Fts5Auxiliary *pAux; - int nName; /* Size of zName in bytes, including \0 */ - int nByte; /* Bytes of space to allocate */ + sqlite3_int64 nName; /* Size of zName in bytes, including \0 */ + sqlite3_int64 nByte; /* Bytes of space to allocate */ - nName = (int)strlen(zName) + 1; + nName = strlen(zName) + 1; nByte = sizeof(Fts5Auxiliary) + nName; - pAux = (Fts5Auxiliary*)sqlite3_malloc(nByte); + pAux = (Fts5Auxiliary*)sqlite3_malloc64(nByte); if( pAux ){ - memset(pAux, 0, nByte); + memset(pAux, 0, (size_t)nByte); pAux->zFunc = (char*)&pAux[1]; memcpy(pAux->zFunc, zName, nName); pAux->pGlobal = pGlobal; @@ -207430,7 +245585,7 @@ static int fts5CreateAux( } /* -** Register a new tokenizer. This is the implementation of the +** Register a new tokenizer. This is the implementation of the ** fts5_api.xCreateTokenizer() method. */ static int fts5CreateTokenizer( @@ -207442,15 +245597,15 @@ static int fts5CreateTokenizer( ){ Fts5Global *pGlobal = (Fts5Global*)pApi; Fts5TokenizerModule *pNew; - int nName; /* Size of zName and its \0 terminator */ - int nByte; /* Bytes of space to allocate */ + sqlite3_int64 nName; /* Size of zName and its \0 terminator */ + sqlite3_int64 nByte; /* Bytes of space to allocate */ int rc = SQLITE_OK; - nName = (int)strlen(zName) + 1; + nName = strlen(zName) + 1; nByte = sizeof(Fts5TokenizerModule) + nName; - pNew = (Fts5TokenizerModule*)sqlite3_malloc(nByte); + pNew = (Fts5TokenizerModule*)sqlite3_malloc64(nByte); if( pNew ){ - memset(pNew, 0, nByte); + memset(pNew, 0, (size_t)nByte); pNew->zName = (char*)&pNew[1]; memcpy(pNew->zName, zName, nName); pNew->pUserData = pUserData; @@ -207469,7 +245624,7 @@ static int fts5CreateTokenizer( } static Fts5TokenizerModule *fts5LocateTokenizer( - Fts5Global *pGlobal, + Fts5Global *pGlobal, const char *zName ){ Fts5TokenizerModule *pMod = 0; @@ -207486,7 +245641,7 @@ static Fts5TokenizerModule *fts5LocateTokenizer( } /* -** Find a tokenizer. This is the implementation of the +** Find a tokenizer. This is the implementation of the ** fts5_api.xFindTokenizer() method. */ static int fts5FindTokenizer( @@ -207511,11 +245666,10 @@ static int fts5FindTokenizer( } static int sqlite3Fts5GetTokenizer( - Fts5Global *pGlobal, + Fts5Global *pGlobal, const char **azArg, int nArg, - Fts5Tokenizer **ppTok, - fts5_tokenizer **ppTokApi, + Fts5Config *pConfig, char **pzErr ){ Fts5TokenizerModule *pMod; @@ -207527,16 +245681,22 @@ static int sqlite3Fts5GetTokenizer( rc = SQLITE_ERROR; *pzErr = sqlite3_mprintf("no such tokenizer: %s", azArg[0]); }else{ - rc = pMod->x.xCreate(pMod->pUserData, &azArg[1], (nArg?nArg-1:0), ppTok); - *ppTokApi = &pMod->x; - if( rc!=SQLITE_OK && pzErr ){ - *pzErr = sqlite3_mprintf("error in tokenizer constructor"); + rc = pMod->x.xCreate( + pMod->pUserData, (azArg?&azArg[1]:0), (nArg?nArg-1:0), &pConfig->pTok + ); + pConfig->pTokApi = &pMod->x; + if( rc!=SQLITE_OK ){ + if( pzErr ) *pzErr = sqlite3_mprintf("error in tokenizer constructor"); + }else{ + pConfig->ePattern = sqlite3Fts5TokenizerPattern( + pMod->x.xCreate, pConfig->pTok + ); } } if( rc!=SQLITE_OK ){ - *ppTokApi = 0; - *ppTok = 0; + pConfig->pTokApi = 0; + pConfig->pTok = 0; } return rc; @@ -207585,12 +245745,27 @@ static void fts5SourceIdFunc( ){ assert( nArg==0 ); UNUSED_PARAM2(nArg, apUnused); - sqlite3_result_text(pCtx, "fts5: 2018-06-04 19:24:41 c7ee0833225bfd8c5ec2f9bf62b97c4e04d03bd9566366d5221ac8fb199a87ca", -1, SQLITE_TRANSIENT); + sqlite3_result_text(pCtx, "fts5: 2023-08-24 12:36:59 0f80b798b3f4b81a7bb4233c58294edd0f1156f36b6ecf5ab8e83631d468778c", -1, SQLITE_TRANSIENT); +} + +/* +** Return true if zName is the extension on one of the shadow tables used +** by this module. +*/ +static int fts5ShadowName(const char *zName){ + static const char *azName[] = { + "config", "content", "data", "docsize", "idx" + }; + unsigned int i; + for(i=0; ipConfig->bColumnsize || ( - eStmt!=FTS5_STMT_REPLACE_DOCSIZE - && eStmt!=FTS5_STMT_DELETE_DOCSIZE - && eStmt!=FTS5_STMT_LOOKUP_DOCSIZE + eStmt!=FTS5_STMT_REPLACE_DOCSIZE + && eStmt!=FTS5_STMT_DELETE_DOCSIZE + && eStmt!=FTS5_STMT_LOOKUP_DOCSIZE )); assert( eStmt>=0 && eStmtaStmt) ); @@ -207780,10 +245958,10 @@ static int fts5StorageGetStmt( "INSERT INTO %Q.'%q_content' VALUES(%s)", /* INSERT_CONTENT */ "REPLACE INTO %Q.'%q_content' VALUES(%s)", /* REPLACE_CONTENT */ "DELETE FROM %Q.'%q_content' WHERE id=?", /* DELETE_CONTENT */ - "REPLACE INTO %Q.'%q_docsize' VALUES(?,?)", /* REPLACE_DOCSIZE */ + "REPLACE INTO %Q.'%q_docsize' VALUES(?,?%s)", /* REPLACE_DOCSIZE */ "DELETE FROM %Q.'%q_docsize' WHERE id=?", /* DELETE_DOCSIZE */ - "SELECT sz FROM %Q.'%q_docsize' WHERE id=?", /* LOOKUP_DOCSIZE */ + "SELECT sz%s FROM %Q.'%q_docsize' WHERE id=?", /* LOOKUP_DOCSIZE */ "REPLACE INTO %Q.'%q_config' VALUES(?,?)", /* REPLACE_CONFIG */ "SELECT %s FROM %s AS T", /* SCAN */ @@ -207793,32 +245971,32 @@ static int fts5StorageGetStmt( switch( eStmt ){ case FTS5_STMT_SCAN: - zSql = sqlite3_mprintf(azStmt[eStmt], + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zContentExprlist, pC->zContent ); break; case FTS5_STMT_SCAN_ASC: case FTS5_STMT_SCAN_DESC: - zSql = sqlite3_mprintf(azStmt[eStmt], pC->zContentExprlist, + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zContentExprlist, pC->zContent, pC->zContentRowid, pC->zContentRowid, pC->zContentRowid ); break; case FTS5_STMT_LOOKUP: - zSql = sqlite3_mprintf(azStmt[eStmt], + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zContentExprlist, pC->zContent, pC->zContentRowid ); break; - case FTS5_STMT_INSERT_CONTENT: + case FTS5_STMT_INSERT_CONTENT: case FTS5_STMT_REPLACE_CONTENT: { int nCol = pC->nCol + 1; char *zBind; int i; - zBind = sqlite3_malloc(1 + nCol*2); + zBind = sqlite3_malloc64(1 + nCol*2); if( zBind ){ for(i=0; izDb, pC->zName, + (pC->bContentlessDelete ? ",?" : "") + ); + break; + + case FTS5_STMT_LOOKUP_DOCSIZE: + zSql = sqlite3_mprintf(azStmt[eStmt], + (pC->bContentlessDelete ? ",origin" : ""), + pC->zDb, pC->zName + ); + break; + default: zSql = sqlite3_mprintf(azStmt[eStmt], pC->zDb, pC->zName); break; @@ -207839,8 +246030,11 @@ static int fts5StorageGetStmt( if( zSql==0 ){ rc = SQLITE_NOMEM; }else{ - rc = sqlite3_prepare_v3(pC->db, zSql, -1, - SQLITE_PREPARE_PERSISTENT, &p->aStmt[eStmt], 0); + int f = SQLITE_PREPARE_PERSISTENT; + if( eStmt>FTS5_STMT_LOOKUP ) f |= SQLITE_PREPARE_NO_VTAB; + p->pConfig->bLock++; + rc = sqlite3_prepare_v3(pC->db, zSql, -1, f, &p->aStmt[eStmt], 0); + p->pConfig->bLock--; sqlite3_free(zSql); if( rc!=SQLITE_OK && pzErrMsg ){ *pzErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pC->db)); @@ -207883,7 +246077,7 @@ static int fts5ExecPrintf( ** code otherwise. */ static int sqlite3Fts5DropAll(Fts5Config *pConfig){ - int rc = fts5ExecPrintf(pConfig->db, 0, + int rc = fts5ExecPrintf(pConfig->db, 0, "DROP TABLE IF EXISTS %Q.'%q_data';" "DROP TABLE IF EXISTS %Q.'%q_idx';" "DROP TABLE IF EXISTS %Q.'%q_config';", @@ -207892,13 +246086,13 @@ static int sqlite3Fts5DropAll(Fts5Config *pConfig){ pConfig->zDb, pConfig->zName ); if( rc==SQLITE_OK && pConfig->bColumnsize ){ - rc = fts5ExecPrintf(pConfig->db, 0, + rc = fts5ExecPrintf(pConfig->db, 0, "DROP TABLE IF EXISTS %Q.'%q_docsize';", pConfig->zDb, pConfig->zName ); } if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_NORMAL ){ - rc = fts5ExecPrintf(pConfig->db, 0, + rc = fts5ExecPrintf(pConfig->db, 0, "DROP TABLE IF EXISTS %Q.'%q_content';", pConfig->zDb, pConfig->zName ); @@ -207913,7 +246107,7 @@ static void fts5StorageRenameOne( const char *zName /* New name of FTS5 table */ ){ if( *pRc==SQLITE_OK ){ - *pRc = fts5ExecPrintf(pConfig->db, 0, + *pRc = fts5ExecPrintf(pConfig->db, 0, "ALTER TABLE %Q.'%q_%s' RENAME TO '%q_%s';", pConfig->zDb, pConfig->zName, zTail, zName, zTail ); @@ -207951,7 +246145,7 @@ static int sqlite3Fts5CreateTable( char *zErr = 0; rc = fts5ExecPrintf(pConfig->db, &zErr, "CREATE TABLE %Q.'%q_%q'(%s)%s", - pConfig->zDb, pConfig->zName, zPost, zDefn, + pConfig->zDb, pConfig->zName, zPost, zDefn, #ifndef SQLITE_FTS5_NO_WITHOUT_ROWID bWithout?" WITHOUT ROWID": #endif @@ -207959,7 +246153,7 @@ static int sqlite3Fts5CreateTable( ); if( zErr ){ *pzErr = sqlite3_mprintf( - "fts5: error creating shadow table %q_%s: %s", + "fts5: error creating shadow table %q_%s: %s", pConfig->zName, zPost, zErr ); sqlite3_free(zErr); @@ -207970,28 +246164,28 @@ static int sqlite3Fts5CreateTable( /* ** Open a new Fts5Index handle. If the bCreate argument is true, create -** and initialize the underlying tables +** and initialize the underlying tables ** ** If successful, set *pp to point to the new object and return SQLITE_OK. ** Otherwise, set *pp to NULL and return an SQLite error code. */ static int sqlite3Fts5StorageOpen( - Fts5Config *pConfig, - Fts5Index *pIndex, - int bCreate, + Fts5Config *pConfig, + Fts5Index *pIndex, + int bCreate, Fts5Storage **pp, char **pzErr /* OUT: Error message */ ){ int rc = SQLITE_OK; Fts5Storage *p; /* New object */ - int nByte; /* Bytes of space to allocate */ + sqlite3_int64 nByte; /* Bytes of space to allocate */ nByte = sizeof(Fts5Storage) /* Fts5Storage object */ + pConfig->nCol * sizeof(i64); /* Fts5Storage.aTotalSize[] */ - *pp = p = (Fts5Storage*)sqlite3_malloc(nByte); + *pp = p = (Fts5Storage*)sqlite3_malloc64(nByte); if( !p ) return SQLITE_NOMEM; - memset(p, 0, nByte); + memset(p, 0, (size_t)nByte); p->aTotalSize = (i64*)&p[1]; p->pConfig = pConfig; p->pIndex = pIndex; @@ -207999,7 +246193,7 @@ static int sqlite3Fts5StorageOpen( if( bCreate ){ if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ int nDefn = 32 + pConfig->nCol*10; - char *zDefn = sqlite3_malloc(32 + pConfig->nCol * 10); + char *zDefn = sqlite3_malloc64(32 + (sqlite3_int64)pConfig->nCol * 10); if( zDefn==0 ){ rc = SQLITE_NOMEM; }else{ @@ -208017,9 +246211,11 @@ static int sqlite3Fts5StorageOpen( } if( rc==SQLITE_OK && pConfig->bColumnsize ){ - rc = sqlite3Fts5CreateTable( - pConfig, "docsize", "id INTEGER PRIMARY KEY, sz BLOB", 0, pzErr - ); + const char *zCols = "id INTEGER PRIMARY KEY, sz BLOB"; + if( pConfig->bContentlessDelete ){ + zCols = "id INTEGER PRIMARY KEY, sz BLOB, origin INTEGER"; + } + rc = sqlite3Fts5CreateTable(pConfig, "docsize", zCols, 0, pzErr); } if( rc==SQLITE_OK ){ rc = sqlite3Fts5CreateTable( @@ -208090,13 +246286,13 @@ static int fts5StorageInsertCallback( ** remove the %_content row at this time though. */ static int fts5StorageDeleteFromIndex( - Fts5Storage *p, - i64 iDel, + Fts5Storage *p, + i64 iDel, sqlite3_value **apVal ){ Fts5Config *pConfig = p->pConfig; sqlite3_stmt *pSeek = 0; /* SELECT to read row iDel from %_data */ - int rc; /* Return code */ + int rc = SQLITE_OK; /* Return code */ int rc2; /* sqlite3_reset() return code */ int iCol; Fts5InsertCtx ctx; @@ -208112,32 +246308,73 @@ static int fts5StorageDeleteFromIndex( ctx.pStorage = p; ctx.iCol = -1; - rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 1, iDel); for(iCol=1; rc==SQLITE_OK && iCol<=pConfig->nCol; iCol++){ if( pConfig->abUnindexed[iCol-1]==0 ){ const char *zText; int nText; + assert( pSeek==0 || apVal==0 ); + assert( pSeek!=0 || apVal!=0 ); if( pSeek ){ zText = (const char*)sqlite3_column_text(pSeek, iCol); nText = sqlite3_column_bytes(pSeek, iCol); - }else{ + }else if( ALWAYS(apVal) ){ zText = (const char*)sqlite3_value_text(apVal[iCol-1]); nText = sqlite3_value_bytes(apVal[iCol-1]); + }else{ + continue; } ctx.szCol = 0; - rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, + rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, zText, nText, (void*)&ctx, fts5StorageInsertCallback ); p->aTotalSize[iCol-1] -= (i64)ctx.szCol; + if( p->aTotalSize[iCol-1]<0 ){ + rc = FTS5_CORRUPT; + } } } - p->nTotalRow--; + if( rc==SQLITE_OK && p->nTotalRow<1 ){ + rc = FTS5_CORRUPT; + }else{ + p->nTotalRow--; + } rc2 = sqlite3_reset(pSeek); if( rc==SQLITE_OK ) rc = rc2; return rc; } +/* +** This function is called to process a DELETE on a contentless_delete=1 +** table. It adds the tombstone required to delete the entry with rowid +** iDel. If successful, SQLITE_OK is returned. Or, if an error occurs, +** an SQLite error code. +*/ +static int fts5StorageContentlessDelete(Fts5Storage *p, i64 iDel){ + i64 iOrigin = 0; + sqlite3_stmt *pLookup = 0; + int rc = SQLITE_OK; + + assert( p->pConfig->bContentlessDelete ); + assert( p->pConfig->eContent==FTS5_CONTENT_NONE ); + + /* Look up the origin of the document in the %_docsize table. Store + ** this in stack variable iOrigin. */ + rc = fts5StorageGetStmt(p, FTS5_STMT_LOOKUP_DOCSIZE, &pLookup, 0); + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pLookup, 1, iDel); + if( SQLITE_ROW==sqlite3_step(pLookup) ){ + iOrigin = sqlite3_column_int64(pLookup, 1); + } + rc = sqlite3_reset(pLookup); + } + + if( rc==SQLITE_OK && iOrigin!=0 ){ + rc = sqlite3Fts5IndexContentlessDelete(p->pIndex, iOrigin, iDel); + } + + return rc; +} /* ** Insert a record into the %_docsize table. Specifically, do: @@ -208158,17 +246395,24 @@ static int fts5StorageInsertDocsize( rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_DOCSIZE, &pReplace, 0); if( rc==SQLITE_OK ){ sqlite3_bind_int64(pReplace, 1, iRowid); - sqlite3_bind_blob(pReplace, 2, pBuf->p, pBuf->n, SQLITE_STATIC); - sqlite3_step(pReplace); - rc = sqlite3_reset(pReplace); - sqlite3_bind_null(pReplace, 2); + if( p->pConfig->bContentlessDelete ){ + i64 iOrigin = 0; + rc = sqlite3Fts5IndexGetOrigin(p->pIndex, &iOrigin); + sqlite3_bind_int64(pReplace, 3, iOrigin); + } + if( rc==SQLITE_OK ){ + sqlite3_bind_blob(pReplace, 2, pBuf->p, pBuf->n, SQLITE_STATIC); + sqlite3_step(pReplace); + rc = sqlite3_reset(pReplace); + sqlite3_bind_null(pReplace, 2); + } } } return rc; } /* -** Load the contents of the "averages" record from disk into the +** Load the contents of the "averages" record from disk into the ** p->nTotalRow and p->aTotalSize[] variables. If successful, and if ** argument bCache is true, set the p->bTotalsValid flag to indicate ** that the contents of aTotalSize[] and nTotalRow are valid until @@ -208187,7 +246431,7 @@ static int fts5StorageLoadTotals(Fts5Storage *p, int bCache){ } /* -** Store the current contents of the p->nTotalRow and p->aTotalSize[] +** Store the current contents of the p->nTotalRow and p->aTotalSize[] ** variables in the "averages" record on disk. ** ** Return SQLITE_OK if successful, or an SQLite error code if an error @@ -208225,7 +246469,15 @@ static int sqlite3Fts5StorageDelete(Fts5Storage *p, i64 iDel, sqlite3_value **ap /* Delete the index records */ if( rc==SQLITE_OK ){ - rc = fts5StorageDeleteFromIndex(p, iDel, apVal); + rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 1, iDel); + } + + if( rc==SQLITE_OK ){ + if( p->pConfig->bContentlessDelete ){ + rc = fts5StorageContentlessDelete(p, iDel); + }else{ + rc = fts5StorageDeleteFromIndex(p, iDel, apVal); + } } /* Delete the %_docsize record */ @@ -208260,9 +246512,11 @@ static int sqlite3Fts5StorageDeleteAll(Fts5Storage *p){ Fts5Config *pConfig = p->pConfig; int rc; + p->bTotalsValid = 0; + /* Delete the contents of the %_data and %_docsize tables. */ rc = fts5ExecPrintf(pConfig->db, 0, - "DELETE FROM %Q.'%q_data';" + "DELETE FROM %Q.'%q_data';" "DELETE FROM %Q.'%q_idx';", pConfig->zDb, pConfig->zName, pConfig->zDb, pConfig->zName @@ -208290,7 +246544,7 @@ static int sqlite3Fts5StorageRebuild(Fts5Storage *p){ Fts5Config *pConfig = p->pConfig; sqlite3_stmt *pScan = 0; Fts5InsertCtx ctx; - int rc; + int rc, rc2; memset(&ctx, 0, sizeof(Fts5InsertCtx)); ctx.pStorage = p; @@ -208311,10 +246565,11 @@ static int sqlite3Fts5StorageRebuild(Fts5Storage *p){ for(ctx.iCol=0; rc==SQLITE_OK && ctx.iColnCol; ctx.iCol++){ ctx.szCol = 0; if( pConfig->abUnindexed[ctx.iCol]==0 ){ - rc = sqlite3Fts5Tokenize(pConfig, + const char *zText = (const char*)sqlite3_column_text(pScan, ctx.iCol+1); + int nText = sqlite3_column_bytes(pScan, ctx.iCol+1); + rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, - (const char*)sqlite3_column_text(pScan, ctx.iCol+1), - sqlite3_column_bytes(pScan, ctx.iCol+1), + zText, nText, (void*)&ctx, fts5StorageInsertCallback ); @@ -208329,6 +246584,8 @@ static int sqlite3Fts5StorageRebuild(Fts5Storage *p){ } } sqlite3_free(buf.p); + rc2 = sqlite3_reset(pScan); + if( rc==SQLITE_OK ) rc = rc2; /* Write the averages record */ if( rc==SQLITE_OK ){ @@ -208380,8 +246637,8 @@ static int fts5StorageNewRowid(Fts5Storage *p, i64 *piRowid){ ** Insert a new row into the FTS content table. */ static int sqlite3Fts5StorageContentInsert( - Fts5Storage *p, - sqlite3_value **apVal, + Fts5Storage *p, + sqlite3_value **apVal, i64 *piRowid ){ Fts5Config *pConfig = p->pConfig; @@ -208415,8 +246672,8 @@ static int sqlite3Fts5StorageContentInsert( ** Insert new entries into the FTS index and %_docsize table. */ static int sqlite3Fts5StorageIndexInsert( - Fts5Storage *p, - sqlite3_value **apVal, + Fts5Storage *p, + sqlite3_value **apVal, i64 iRowid ){ Fts5Config *pConfig = p->pConfig; @@ -208434,10 +246691,11 @@ static int sqlite3Fts5StorageIndexInsert( for(ctx.iCol=0; rc==SQLITE_OK && ctx.iColnCol; ctx.iCol++){ ctx.szCol = 0; if( pConfig->abUnindexed[ctx.iCol]==0 ){ - rc = sqlite3Fts5Tokenize(pConfig, + const char *zText = (const char*)sqlite3_value_text(apVal[ctx.iCol+2]); + int nText = sqlite3_value_bytes(apVal[ctx.iCol+2]); + rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, - (const char*)sqlite3_value_text(apVal[ctx.iCol+2]), - sqlite3_value_bytes(apVal[ctx.iCol+2]), + zText, nText, (void*)&ctx, fts5StorageInsertCallback ); @@ -208461,7 +246719,7 @@ static int fts5StorageCount(Fts5Storage *p, const char *zSuffix, i64 *pnRow){ char *zSql; int rc; - zSql = sqlite3_mprintf("SELECT count(*) FROM %Q.'%q_%s'", + zSql = sqlite3_mprintf("SELECT count(*) FROM %Q.'%q_%s'", pConfig->zDb, pConfig->zName, zSuffix ); if( zSql==0 ){ @@ -208568,97 +246826,104 @@ static int fts5StorageIntegrityCallback( ** some other SQLite error code if an error occurs while attempting to ** determine this. */ -static int sqlite3Fts5StorageIntegrity(Fts5Storage *p){ +static int sqlite3Fts5StorageIntegrity(Fts5Storage *p, int iArg){ Fts5Config *pConfig = p->pConfig; - int rc; /* Return code */ + int rc = SQLITE_OK; /* Return code */ int *aColSize; /* Array of size pConfig->nCol */ i64 *aTotalSize; /* Array of size pConfig->nCol */ Fts5IntegrityCtx ctx; sqlite3_stmt *pScan; + int bUseCksum; memset(&ctx, 0, sizeof(Fts5IntegrityCtx)); ctx.pConfig = p->pConfig; - aTotalSize = (i64*)sqlite3_malloc(pConfig->nCol * (sizeof(int)+sizeof(i64))); + aTotalSize = (i64*)sqlite3_malloc64(pConfig->nCol*(sizeof(int)+sizeof(i64))); if( !aTotalSize ) return SQLITE_NOMEM; aColSize = (int*)&aTotalSize[pConfig->nCol]; memset(aTotalSize, 0, sizeof(i64) * pConfig->nCol); - /* Generate the expected index checksum based on the contents of the - ** %_content table. This block stores the checksum in ctx.cksum. */ - rc = fts5StorageGetStmt(p, FTS5_STMT_SCAN, &pScan, 0); - if( rc==SQLITE_OK ){ - int rc2; - while( SQLITE_ROW==sqlite3_step(pScan) ){ - int i; - ctx.iRowid = sqlite3_column_int64(pScan, 0); - ctx.szCol = 0; - if( pConfig->bColumnsize ){ - rc = sqlite3Fts5StorageDocsize(p, ctx.iRowid, aColSize); - } - if( rc==SQLITE_OK && pConfig->eDetail==FTS5_DETAIL_NONE ){ - rc = sqlite3Fts5TermsetNew(&ctx.pTermset); - } - for(i=0; rc==SQLITE_OK && inCol; i++){ - if( pConfig->abUnindexed[i] ) continue; - ctx.iCol = i; + bUseCksum = (pConfig->eContent==FTS5_CONTENT_NORMAL + || (pConfig->eContent==FTS5_CONTENT_EXTERNAL && iArg) + ); + if( bUseCksum ){ + /* Generate the expected index checksum based on the contents of the + ** %_content table. This block stores the checksum in ctx.cksum. */ + rc = fts5StorageGetStmt(p, FTS5_STMT_SCAN, &pScan, 0); + if( rc==SQLITE_OK ){ + int rc2; + while( SQLITE_ROW==sqlite3_step(pScan) ){ + int i; + ctx.iRowid = sqlite3_column_int64(pScan, 0); ctx.szCol = 0; - if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){ + if( pConfig->bColumnsize ){ + rc = sqlite3Fts5StorageDocsize(p, ctx.iRowid, aColSize); + } + if( rc==SQLITE_OK && pConfig->eDetail==FTS5_DETAIL_NONE ){ rc = sqlite3Fts5TermsetNew(&ctx.pTermset); } - if( rc==SQLITE_OK ){ - rc = sqlite3Fts5Tokenize(pConfig, - FTS5_TOKENIZE_DOCUMENT, - (const char*)sqlite3_column_text(pScan, i+1), - sqlite3_column_bytes(pScan, i+1), - (void*)&ctx, - fts5StorageIntegrityCallback - ); - } - if( rc==SQLITE_OK && pConfig->bColumnsize && ctx.szCol!=aColSize[i] ){ - rc = FTS5_CORRUPT; - } - aTotalSize[i] += ctx.szCol; - if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){ - sqlite3Fts5TermsetFree(ctx.pTermset); - ctx.pTermset = 0; + for(i=0; rc==SQLITE_OK && inCol; i++){ + if( pConfig->abUnindexed[i] ) continue; + ctx.iCol = i; + ctx.szCol = 0; + if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){ + rc = sqlite3Fts5TermsetNew(&ctx.pTermset); + } + if( rc==SQLITE_OK ){ + const char *zText = (const char*)sqlite3_column_text(pScan, i+1); + int nText = sqlite3_column_bytes(pScan, i+1); + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + zText, nText, + (void*)&ctx, + fts5StorageIntegrityCallback + ); + } + if( rc==SQLITE_OK && pConfig->bColumnsize && ctx.szCol!=aColSize[i] ){ + rc = FTS5_CORRUPT; + } + aTotalSize[i] += ctx.szCol; + if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){ + sqlite3Fts5TermsetFree(ctx.pTermset); + ctx.pTermset = 0; + } } + sqlite3Fts5TermsetFree(ctx.pTermset); + ctx.pTermset = 0; + + if( rc!=SQLITE_OK ) break; } - sqlite3Fts5TermsetFree(ctx.pTermset); - ctx.pTermset = 0; - - if( rc!=SQLITE_OK ) break; + rc2 = sqlite3_reset(pScan); + if( rc==SQLITE_OK ) rc = rc2; } - rc2 = sqlite3_reset(pScan); - if( rc==SQLITE_OK ) rc = rc2; - } - /* Test that the "totals" (sometimes called "averages") record looks Ok */ - if( rc==SQLITE_OK ){ - int i; - rc = fts5StorageLoadTotals(p, 0); - for(i=0; rc==SQLITE_OK && inCol; i++){ - if( p->aTotalSize[i]!=aTotalSize[i] ) rc = FTS5_CORRUPT; + /* Test that the "totals" (sometimes called "averages") record looks Ok */ + if( rc==SQLITE_OK ){ + int i; + rc = fts5StorageLoadTotals(p, 0); + for(i=0; rc==SQLITE_OK && inCol; i++){ + if( p->aTotalSize[i]!=aTotalSize[i] ) rc = FTS5_CORRUPT; + } } - } - /* Check that the %_docsize and %_content tables contain the expected - ** number of rows. */ - if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_NORMAL ){ - i64 nRow = 0; - rc = fts5StorageCount(p, "content", &nRow); - if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; - } - if( rc==SQLITE_OK && pConfig->bColumnsize ){ - i64 nRow = 0; - rc = fts5StorageCount(p, "docsize", &nRow); - if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; + /* Check that the %_docsize and %_content tables contain the expected + ** number of rows. */ + if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_NORMAL ){ + i64 nRow = 0; + rc = fts5StorageCount(p, "content", &nRow); + if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; + } + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + i64 nRow = 0; + rc = fts5StorageCount(p, "docsize", &nRow); + if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; + } } /* Pass the expected checksum down to the FTS index module. It will ** verify, amongst other things, that it matches the checksum generated by ** inspecting the index itself. */ if( rc==SQLITE_OK ){ - rc = sqlite3Fts5IndexIntegrityCheck(p->pIndex, ctx.cksum); + rc = sqlite3Fts5IndexIntegrityCheck(p->pIndex, ctx.cksum, bUseCksum); } sqlite3_free(aTotalSize); @@ -208670,13 +246935,13 @@ static int sqlite3Fts5StorageIntegrity(Fts5Storage *p){ ** %_content table. */ static int sqlite3Fts5StorageStmt( - Fts5Storage *p, - int eStmt, - sqlite3_stmt **pp, + Fts5Storage *p, + int eStmt, + sqlite3_stmt **pp, char **pzErrMsg ){ int rc; - assert( eStmt==FTS5_STMT_SCAN_ASC + assert( eStmt==FTS5_STMT_SCAN_ASC || eStmt==FTS5_STMT_SCAN_DESC || eStmt==FTS5_STMT_LOOKUP ); @@ -208694,8 +246959,8 @@ static int sqlite3Fts5StorageStmt( ** must match that passed to the sqlite3Fts5StorageStmt() call. */ static void sqlite3Fts5StorageStmtRelease( - Fts5Storage *p, - int eStmt, + Fts5Storage *p, + int eStmt, sqlite3_stmt *pStmt ){ assert( eStmt==FTS5_STMT_SCAN_ASC @@ -208738,8 +247003,9 @@ static int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol){ assert( p->pConfig->bColumnsize ); rc = fts5StorageGetStmt(p, FTS5_STMT_LOOKUP_DOCSIZE, &pLookup, 0); - if( rc==SQLITE_OK ){ + if( pLookup ){ int bCorrupt = 1; + assert( rc==SQLITE_OK ); sqlite3_bind_int64(pLookup, 1, iRowid); if( SQLITE_ROW==sqlite3_step(pLookup) ){ const u8 *aBlob = sqlite3_column_blob(pLookup, 0); @@ -208752,6 +247018,8 @@ static int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol){ if( bCorrupt && rc==SQLITE_OK ){ rc = FTS5_CORRUPT; } + }else{ + assert( rc!=SQLITE_OK ); } return rc; @@ -208778,7 +247046,13 @@ static int sqlite3Fts5StorageSize(Fts5Storage *p, int iCol, i64 *pnToken){ static int sqlite3Fts5StorageRowCount(Fts5Storage *p, i64 *pnRow){ int rc = fts5StorageLoadTotals(p, 0); if( rc==SQLITE_OK ){ + /* nTotalRow being zero does not necessarily indicate a corrupt + ** database - it might be that the FTS5 table really does contain zero + ** rows. However this function is only called from the xRowCount() API, + ** and there is no way for that API to be invoked if the table contains + ** no rows. Hence the FTS5_CORRUPT return. */ *pnRow = p->nTotalRow; + if( p->nTotalRow<=0 ) rc = FTS5_CORRUPT; } return rc; } @@ -208806,7 +247080,7 @@ static int sqlite3Fts5StorageRollback(Fts5Storage *p){ } static int sqlite3Fts5StorageConfigValue( - Fts5Storage *p, + Fts5Storage *p, const char *z, sqlite3_value *pVal, int iVal @@ -208856,7 +247130,7 @@ static int sqlite3Fts5StorageConfigValue( /* ** For tokenizers with no "unicode" modifier, the set of token characters -** is the same as the set of ASCII range alphanumeric characters. +** is the same as the set of ASCII range alphanumeric characters. */ static unsigned char aAsciiTokenChar[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00..0x0F */ @@ -208875,8 +247149,8 @@ struct AsciiTokenizer { }; static void fts5AsciiAddExceptions( - AsciiTokenizer *p, - const char *zArg, + AsciiTokenizer *p, + const char *zArg, int bTokenChars ){ int i; @@ -208898,7 +247172,7 @@ static void fts5AsciiDelete(Fts5Tokenizer *p){ ** Create an "ascii" tokenizer. */ static int fts5AsciiCreate( - void *pUnused, + void *pUnused, const char **azArg, int nArg, Fts5Tokenizer **ppOut ){ @@ -208988,7 +247262,7 @@ static int fts5AsciiTokenize( nByte = ie-is; if( nByte>nFold ){ if( pFold!=aFold ) sqlite3_free(pFold); - pFold = sqlite3_malloc(nByte*2); + pFold = sqlite3_malloc64((sqlite3_int64)nByte*2); if( pFold==0 ){ rc = SQLITE_NOMEM; break; @@ -209001,7 +247275,7 @@ static int fts5AsciiTokenize( rc = xToken(pCtx, 0, pFold, nByte, is, ie); is = ie+1; } - + if( pFold!=aFold ) sqlite3_free(pFold); if( rc==SQLITE_DONE ) rc = SQLITE_OK; return rc; @@ -209070,11 +247344,18 @@ struct Unicode61Tokenizer { unsigned char aTokenChar[128]; /* ASCII range token characters */ char *aFold; /* Buffer to fold text into */ int nFold; /* Size of aFold[] in bytes */ - int bRemoveDiacritic; /* True if remove_diacritics=1 is set */ + int eRemoveDiacritic; /* True if remove_diacritics=1 is set */ int nException; int *aiException; + + unsigned char aCategory[32]; /* True for token char categories */ }; +/* Values for eRemoveDiacritic (must match internals of fts5_unicode2.c) */ +#define FTS5_REMOVE_DIACRITICS_NONE 0 +#define FTS5_REMOVE_DIACRITICS_SIMPLE 1 +#define FTS5_REMOVE_DIACRITICS_COMPLEX 2 + static int fts5UnicodeAddExceptions( Unicode61Tokenizer *p, /* Tokenizer object */ const char *z, /* Characters to treat as exceptions */ @@ -209085,25 +247366,26 @@ static int fts5UnicodeAddExceptions( int *aNew; if( n>0 ){ - aNew = (int*)sqlite3_realloc(p->aiException, (n+p->nException)*sizeof(int)); + aNew = (int*)sqlite3_realloc64(p->aiException, + (n+p->nException)*sizeof(int)); if( aNew ){ int nNew = p->nException; const unsigned char *zCsr = (const unsigned char*)z; const unsigned char *zTerm = (const unsigned char*)&z[n]; while( zCsraTokenChar[iCode] = (unsigned char)bTokenChars; }else{ - bToken = sqlite3Fts5UnicodeIsalnum(iCode); - assert( (bToken==0 || bToken==1) ); + bToken = p->aCategory[sqlite3Fts5UnicodeCategory(iCode)]; + assert( (bToken==0 || bToken==1) ); assert( (bTokenChars==0 || bTokenChars==1) ); if( bToken!=bTokenChars && sqlite3Fts5UnicodeIsdiacritic(iCode)==0 ){ int i; for(i=0; iiCode ) break; + if( (u32)aNew[i]>iCode ) break; } memmove(&aNew[i+1], &aNew[i], (nNew-i)*sizeof(int)); aNew[i] = iCode; @@ -209158,16 +247440,31 @@ static void fts5UnicodeDelete(Fts5Tokenizer *pTok){ return; } +static int unicodeSetCategories(Unicode61Tokenizer *p, const char *zCat){ + const char *z = zCat; + + while( *z ){ + while( *z==' ' || *z=='\t' ) z++; + if( *z && sqlite3Fts5UnicodeCatParse(z, p->aCategory) ){ + return SQLITE_ERROR; + } + while( *z!=' ' && *z!='\t' && *z!='\0' ) z++; + } + + sqlite3Fts5UnicodeAscii(p->aCategory, p->aTokenChar); + return SQLITE_OK; +} + /* ** Create a "unicode61" tokenizer. */ static int fts5UnicodeCreate( - void *pUnused, + void *pUnused, const char **azArg, int nArg, Fts5Tokenizer **ppOut ){ int rc = SQLITE_OK; /* Return code */ - Unicode61Tokenizer *p = 0; /* New tokenizer object */ + Unicode61Tokenizer *p = 0; /* New tokenizer object */ UNUSED_PARAM(pUnused); @@ -209176,32 +247473,54 @@ static int fts5UnicodeCreate( }else{ p = (Unicode61Tokenizer*)sqlite3_malloc(sizeof(Unicode61Tokenizer)); if( p ){ + const char *zCat = "L* N* Co"; int i; memset(p, 0, sizeof(Unicode61Tokenizer)); - memcpy(p->aTokenChar, aAsciiTokenChar, sizeof(aAsciiTokenChar)); - p->bRemoveDiacritic = 1; + + p->eRemoveDiacritic = FTS5_REMOVE_DIACRITICS_SIMPLE; p->nFold = 64; - p->aFold = sqlite3_malloc(p->nFold * sizeof(char)); + p->aFold = sqlite3_malloc64(p->nFold * sizeof(char)); if( p->aFold==0 ){ rc = SQLITE_NOMEM; } + + /* Search for a "categories" argument */ + for(i=0; rc==SQLITE_OK && ieRemoveDiacritic = (zArg[0] - '0'); + assert( p->eRemoveDiacritic==FTS5_REMOVE_DIACRITICS_NONE + || p->eRemoveDiacritic==FTS5_REMOVE_DIACRITICS_SIMPLE + || p->eRemoveDiacritic==FTS5_REMOVE_DIACRITICS_COMPLEX + ); } - p->bRemoveDiacritic = (zArg[0]=='1'); }else if( 0==sqlite3_stricmp(azArg[i], "tokenchars") ){ rc = fts5UnicodeAddExceptions(p, zArg, 1); }else if( 0==sqlite3_stricmp(azArg[i], "separators") ){ rc = fts5UnicodeAddExceptions(p, zArg, 0); + }else + if( 0==sqlite3_stricmp(azArg[i], "categories") ){ + /* no-op */ }else{ rc = SQLITE_ERROR; } } + }else{ rc = SQLITE_NOMEM; } @@ -209216,12 +247535,14 @@ static int fts5UnicodeCreate( /* ** Return true if, for the purposes of tokenizing with the tokenizer -** passed as the first argument, codepoint iCode is considered a token +** passed as the first argument, codepoint iCode is considered a token ** character (not a separator). */ static int fts5UnicodeIsAlnum(Unicode61Tokenizer *p, int iCode){ - assert( (sqlite3Fts5UnicodeIsalnum(iCode) & 0xFFFFFFFE)==0 ); - return sqlite3Fts5UnicodeIsalnum(iCode) ^ fts5UnicodeIsException(p, iCode); + return ( + p->aCategory[sqlite3Fts5UnicodeCategory((u32)iCode)] + ^ fts5UnicodeIsException(p, iCode) + ); } static int fts5UnicodeTokenize( @@ -209248,7 +247569,7 @@ static int fts5UnicodeTokenize( /* Each iteration of this loop gobbles up a contiguous run of separators, ** then the next token. */ while( rc==SQLITE_OK ){ - int iCode; /* non-ASCII codepoint read from input */ + u32 iCode; /* non-ASCII codepoint read from input */ char *zOut = aFold; int is; int ie; @@ -209280,7 +247601,7 @@ static int fts5UnicodeTokenize( /* Grow the output buffer so that there is sufficient space to fit the ** largest possible utf-8 character. */ if( zOut>pEnd ){ - aFold = sqlite3_malloc(nFold*2); + aFold = sqlite3_malloc64((sqlite3_int64)nFold*2); if( aFold==0 ){ rc = SQLITE_NOMEM; goto tokenize_done; @@ -209299,14 +247620,14 @@ static int fts5UnicodeTokenize( READ_UTF8(zCsr, zTerm, iCode); if( fts5UnicodeIsAlnum(p,iCode)||sqlite3Fts5UnicodeIsdiacritic(iCode) ){ non_ascii_tokenchar: - iCode = sqlite3Fts5UnicodeFold(iCode, p->bRemoveDiacritic); + iCode = sqlite3Fts5UnicodeFold(iCode, p->eRemoveDiacritic); if( iCode ) WRITE_UTF8(zOut, iCode); }else{ break; } }else if( a[*zCsr]==0 ){ /* An ascii-range separator character. End of token. */ - break; + break; }else{ ascii_tokenchar: if( *zCsr>='A' && *zCsr<='Z' ){ @@ -209320,9 +247641,9 @@ static int fts5UnicodeTokenize( } /* Invoke the token callback */ - rc = xToken(pCtx, 0, aFold, zOut-aFold, is, ie); + rc = xToken(pCtx, 0, aFold, zOut-aFold, is, ie); } - + tokenize_done: if( rc==SQLITE_DONE ) rc = SQLITE_OK; return rc; @@ -209360,7 +247681,7 @@ static void fts5PorterDelete(Fts5Tokenizer *pTok){ ** Create a "porter" tokenizer. */ static int fts5PorterCreate( - void *pCtx, + void *pCtx, const char **azArg, int nArg, Fts5Tokenizer **ppOut ){ @@ -209504,7 +247825,7 @@ static int fts5Porter_Ostar(char *zStem, int nStem){ /* porter rule condition: (m > 1 and (*S or *T)) */ static int fts5Porter_MGt1_and_S_or_T(char *zStem, int nStem){ assert( nStem>0 ); - return (zStem[nStem-1]=='s' || zStem[nStem-1]=='t') + return (zStem[nStem-1]=='s' || zStem[nStem-1]=='t') && fts5Porter_MGt1(zStem, nStem); } @@ -209529,16 +247850,16 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ int ret = 0; int nBuf = *pnBuf; switch( aBuf[nBuf-2] ){ - - case 'a': + + case 'a': if( nBuf>2 && 0==memcmp("al", &aBuf[nBuf-2], 2) ){ if( fts5Porter_MGt1(aBuf, nBuf-2) ){ *pnBuf = nBuf - 2; } } break; - - case 'c': + + case 'c': if( nBuf>4 && 0==memcmp("ance", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt1(aBuf, nBuf-4) ){ *pnBuf = nBuf - 4; @@ -209549,24 +247870,24 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ } } break; - - case 'e': + + case 'e': if( nBuf>2 && 0==memcmp("er", &aBuf[nBuf-2], 2) ){ if( fts5Porter_MGt1(aBuf, nBuf-2) ){ *pnBuf = nBuf - 2; } } break; - - case 'i': + + case 'i': if( nBuf>2 && 0==memcmp("ic", &aBuf[nBuf-2], 2) ){ if( fts5Porter_MGt1(aBuf, nBuf-2) ){ *pnBuf = nBuf - 2; } } break; - - case 'l': + + case 'l': if( nBuf>4 && 0==memcmp("able", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt1(aBuf, nBuf-4) ){ *pnBuf = nBuf - 4; @@ -209577,8 +247898,8 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ } } break; - - case 'n': + + case 'n': if( nBuf>3 && 0==memcmp("ant", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; @@ -209597,8 +247918,8 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ } } break; - - case 'o': + + case 'o': if( nBuf>3 && 0==memcmp("ion", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1_and_S_or_T(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; @@ -209609,16 +247930,16 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ } } break; - - case 's': + + case 's': if( nBuf>3 && 0==memcmp("ism", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; } } break; - - case 't': + + case 't': if( nBuf>3 && 0==memcmp("ate", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; @@ -209629,76 +247950,76 @@ static int fts5PorterStep4(char *aBuf, int *pnBuf){ } } break; - - case 'u': + + case 'u': if( nBuf>3 && 0==memcmp("ous", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; } } break; - - case 'v': + + case 'v': if( nBuf>3 && 0==memcmp("ive", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; } } break; - - case 'z': + + case 'z': if( nBuf>3 && 0==memcmp("ize", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt1(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; } } break; - + } return ret; } - + static int fts5PorterStep1B2(char *aBuf, int *pnBuf){ int ret = 0; int nBuf = *pnBuf; switch( aBuf[nBuf-2] ){ - - case 'a': + + case 'a': if( nBuf>2 && 0==memcmp("at", &aBuf[nBuf-2], 2) ){ memcpy(&aBuf[nBuf-2], "ate", 3); *pnBuf = nBuf - 2 + 3; ret = 1; } break; - - case 'b': + + case 'b': if( nBuf>2 && 0==memcmp("bl", &aBuf[nBuf-2], 2) ){ memcpy(&aBuf[nBuf-2], "ble", 3); *pnBuf = nBuf - 2 + 3; ret = 1; } break; - - case 'i': + + case 'i': if( nBuf>2 && 0==memcmp("iz", &aBuf[nBuf-2], 2) ){ memcpy(&aBuf[nBuf-2], "ize", 3); *pnBuf = nBuf - 2 + 3; ret = 1; } break; - + } return ret; } - + static int fts5PorterStep2(char *aBuf, int *pnBuf){ int ret = 0; int nBuf = *pnBuf; switch( aBuf[nBuf-2] ){ - - case 'a': + + case 'a': if( nBuf>7 && 0==memcmp("ational", &aBuf[nBuf-7], 7) ){ if( fts5Porter_MGt0(aBuf, nBuf-7) ){ memcpy(&aBuf[nBuf-7], "ate", 3); @@ -209711,8 +248032,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 'c': + + case 'c': if( nBuf>4 && 0==memcmp("enci", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt0(aBuf, nBuf-4) ){ memcpy(&aBuf[nBuf-4], "ence", 4); @@ -209725,8 +248046,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 'e': + + case 'e': if( nBuf>4 && 0==memcmp("izer", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt0(aBuf, nBuf-4) ){ memcpy(&aBuf[nBuf-4], "ize", 3); @@ -209734,8 +248055,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 'g': + + case 'g': if( nBuf>4 && 0==memcmp("logi", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt0(aBuf, nBuf-4) ){ memcpy(&aBuf[nBuf-4], "log", 3); @@ -209743,8 +248064,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 'l': + + case 'l': if( nBuf>3 && 0==memcmp("bli", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt0(aBuf, nBuf-3) ){ memcpy(&aBuf[nBuf-3], "ble", 3); @@ -209772,8 +248093,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 'o': + + case 'o': if( nBuf>7 && 0==memcmp("ization", &aBuf[nBuf-7], 7) ){ if( fts5Porter_MGt0(aBuf, nBuf-7) ){ memcpy(&aBuf[nBuf-7], "ize", 3); @@ -209791,8 +248112,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 's': + + case 's': if( nBuf>5 && 0==memcmp("alism", &aBuf[nBuf-5], 5) ){ if( fts5Porter_MGt0(aBuf, nBuf-5) ){ memcpy(&aBuf[nBuf-5], "al", 2); @@ -209815,8 +248136,8 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - - case 't': + + case 't': if( nBuf>5 && 0==memcmp("aliti", &aBuf[nBuf-5], 5) ){ if( fts5Porter_MGt0(aBuf, nBuf-5) ){ memcpy(&aBuf[nBuf-5], "al", 2); @@ -209834,18 +248155,18 @@ static int fts5PorterStep2(char *aBuf, int *pnBuf){ } } break; - + } return ret; } - + static int fts5PorterStep3(char *aBuf, int *pnBuf){ int ret = 0; int nBuf = *pnBuf; switch( aBuf[nBuf-2] ){ - - case 'a': + + case 'a': if( nBuf>4 && 0==memcmp("ical", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt0(aBuf, nBuf-4) ){ memcpy(&aBuf[nBuf-4], "ic", 2); @@ -209853,16 +248174,16 @@ static int fts5PorterStep3(char *aBuf, int *pnBuf){ } } break; - - case 's': + + case 's': if( nBuf>4 && 0==memcmp("ness", &aBuf[nBuf-4], 4) ){ if( fts5Porter_MGt0(aBuf, nBuf-4) ){ *pnBuf = nBuf - 4; } } break; - - case 't': + + case 't': if( nBuf>5 && 0==memcmp("icate", &aBuf[nBuf-5], 5) ){ if( fts5Porter_MGt0(aBuf, nBuf-5) ){ memcpy(&aBuf[nBuf-5], "ic", 2); @@ -209875,24 +248196,24 @@ static int fts5PorterStep3(char *aBuf, int *pnBuf){ } } break; - - case 'u': + + case 'u': if( nBuf>3 && 0==memcmp("ful", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt0(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; } } break; - - case 'v': + + case 'v': if( nBuf>5 && 0==memcmp("ative", &aBuf[nBuf-5], 5) ){ if( fts5Porter_MGt0(aBuf, nBuf-5) ){ *pnBuf = nBuf - 5; } } break; - - case 'z': + + case 'z': if( nBuf>5 && 0==memcmp("alize", &aBuf[nBuf-5], 5) ){ if( fts5Porter_MGt0(aBuf, nBuf-5) ){ memcpy(&aBuf[nBuf-5], "al", 2); @@ -209900,18 +248221,18 @@ static int fts5PorterStep3(char *aBuf, int *pnBuf){ } } break; - + } return ret; } - + static int fts5PorterStep1B(char *aBuf, int *pnBuf){ int ret = 0; int nBuf = *pnBuf; switch( aBuf[nBuf-2] ){ - - case 'e': + + case 'e': if( nBuf>3 && 0==memcmp("eed", &aBuf[nBuf-3], 3) ){ if( fts5Porter_MGt0(aBuf, nBuf-3) ){ memcpy(&aBuf[nBuf-3], "ee", 2); @@ -209924,8 +248245,8 @@ static int fts5PorterStep1B(char *aBuf, int *pnBuf){ } } break; - - case 'n': + + case 'n': if( nBuf>3 && 0==memcmp("ing", &aBuf[nBuf-3], 3) ){ if( fts5Porter_Vowel(aBuf, nBuf-3) ){ *pnBuf = nBuf - 3; @@ -209933,12 +248254,12 @@ static int fts5PorterStep1B(char *aBuf, int *pnBuf){ } } break; - + } return ret; } - -/* + +/* ** GENERATED CODE ENDS HERE (mkportersteps.tcl) *************************************************************************** **************************************************************************/ @@ -209947,7 +248268,7 @@ static void fts5PorterStep1A(char *aBuf, int *pnBuf){ int nBuf = *pnBuf; if( aBuf[nBuf-1]=='s' ){ if( aBuf[nBuf-2]=='e' ){ - if( (nBuf>4 && aBuf[nBuf-4]=='s' && aBuf[nBuf-3]=='s') + if( (nBuf>4 && aBuf[nBuf-4]=='s' && aBuf[nBuf-3]=='s') || (nBuf>3 && aBuf[nBuf-3]=='i' ) ){ *pnBuf = nBuf-2; @@ -209962,11 +248283,11 @@ static void fts5PorterStep1A(char *aBuf, int *pnBuf){ } static int fts5PorterCb( - void *pCtx, + void *pCtx, int tflags, - const char *pToken, - int nToken, - int iStart, + const char *pToken, + int nToken, + int iStart, int iEnd ){ PorterContext *p = (PorterContext*)pCtx; @@ -209984,8 +248305,8 @@ static int fts5PorterCb( if( fts5PorterStep1B(aBuf, &nBuf) ){ if( fts5PorterStep1B2(aBuf, &nBuf)==0 ){ char c = aBuf[nBuf-1]; - if( fts5PorterIsVowel(c, 0)==0 - && c!='l' && c!='s' && c!='z' && c==aBuf[nBuf-2] + if( fts5PorterIsVowel(c, 0)==0 + && c!='l' && c!='s' && c!='z' && c==aBuf[nBuf-2] ){ nBuf--; }else if( fts5Porter_MEq1(aBuf, nBuf) && fts5Porter_Ostar(aBuf, nBuf) ){ @@ -210007,7 +248328,7 @@ static int fts5PorterCb( /* Step 5a. */ assert( nBuf>0 ); if( aBuf[nBuf-1]=='e' ){ - if( fts5Porter_MGt1(aBuf, nBuf-1) + if( fts5Porter_MGt1(aBuf, nBuf-1) || (fts5Porter_MEq1(aBuf, nBuf-1) && !fts5Porter_Ostar(aBuf, nBuf-1)) ){ nBuf--; @@ -210015,8 +248336,8 @@ static int fts5PorterCb( } /* Step 5b. */ - if( nBuf>1 && aBuf[nBuf-1]=='l' - && aBuf[nBuf-2]=='l' && fts5Porter_MGt1(aBuf, nBuf-1) + if( nBuf>1 && aBuf[nBuf-1]=='l' + && aBuf[nBuf-2]=='l' && fts5Porter_MGt1(aBuf, nBuf-1) ){ nBuf--; } @@ -210047,6 +248368,133 @@ static int fts5PorterTokenize( ); } +/************************************************************************** +** Start of trigram implementation. +*/ +typedef struct TrigramTokenizer TrigramTokenizer; +struct TrigramTokenizer { + int bFold; /* True to fold to lower-case */ +}; + +/* +** Free a trigram tokenizer. +*/ +static void fts5TriDelete(Fts5Tokenizer *p){ + sqlite3_free(p); +} + +/* +** Allocate a trigram tokenizer. +*/ +static int fts5TriCreate( + void *pUnused, + const char **azArg, + int nArg, + Fts5Tokenizer **ppOut +){ + int rc = SQLITE_OK; + TrigramTokenizer *pNew = (TrigramTokenizer*)sqlite3_malloc(sizeof(*pNew)); + UNUSED_PARAM(pUnused); + if( pNew==0 ){ + rc = SQLITE_NOMEM; + }else{ + int i; + pNew->bFold = 1; + for(i=0; rc==SQLITE_OK && ibFold = (zArg[0]=='0'); + } + }else{ + rc = SQLITE_ERROR; + } + } + if( rc!=SQLITE_OK ){ + fts5TriDelete((Fts5Tokenizer*)pNew); + pNew = 0; + } + } + *ppOut = (Fts5Tokenizer*)pNew; + return rc; +} + +/* +** Trigram tokenizer tokenize routine. +*/ +static int fts5TriTokenize( + Fts5Tokenizer *pTok, + void *pCtx, + int unusedFlags, + const char *pText, int nText, + int (*xToken)(void*, int, const char*, int, int, int) +){ + TrigramTokenizer *p = (TrigramTokenizer*)pTok; + int rc = SQLITE_OK; + char aBuf[32]; + const unsigned char *zIn = (const unsigned char*)pText; + const unsigned char *zEof = &zIn[nText]; + u32 iCode; + + UNUSED_PARAM(unusedFlags); + while( 1 ){ + char *zOut = aBuf; + int iStart = zIn - (const unsigned char*)pText; + const unsigned char *zNext; + + READ_UTF8(zIn, zEof, iCode); + if( iCode==0 ) break; + zNext = zIn; + if( zInbFold ) iCode = sqlite3Fts5UnicodeFold(iCode, 0); + WRITE_UTF8(zOut, iCode); + READ_UTF8(zIn, zEof, iCode); + if( iCode==0 ) break; + }else{ + break; + } + if( zInbFold ) iCode = sqlite3Fts5UnicodeFold(iCode, 0); + WRITE_UTF8(zOut, iCode); + READ_UTF8(zIn, zEof, iCode); + if( iCode==0 ) break; + if( p->bFold ) iCode = sqlite3Fts5UnicodeFold(iCode, 0); + WRITE_UTF8(zOut, iCode); + }else{ + break; + } + rc = xToken(pCtx, 0, aBuf, zOut-aBuf, iStart, iStart + zOut-aBuf); + if( rc!=SQLITE_OK ) break; + zIn = zNext; + } + + return rc; +} + +/* +** Argument xCreate is a pointer to a constructor function for a tokenizer. +** pTok is a tokenizer previously created using the same method. This function +** returns one of FTS5_PATTERN_NONE, FTS5_PATTERN_LIKE or FTS5_PATTERN_GLOB +** indicating the style of pattern matching that the tokenizer can support. +** In practice, this is: +** +** "trigram" tokenizer, case_sensitive=1 - FTS5_PATTERN_GLOB +** "trigram" tokenizer, case_sensitive=0 (the default) - FTS5_PATTERN_LIKE +** all other tokenizers - FTS5_PATTERN_NONE +*/ +static int sqlite3Fts5TokenizerPattern( + int (*xCreate)(void*, const char**, int, Fts5Tokenizer**), + Fts5Tokenizer *pTok +){ + if( xCreate==fts5TriCreate ){ + TrigramTokenizer *p = (TrigramTokenizer*)pTok; + return p->bFold ? FTS5_PATTERN_LIKE : FTS5_PATTERN_GLOB; + } + return FTS5_PATTERN_NONE; +} + /* ** Register all built-in tokenizers with FTS5. */ @@ -210058,8 +248506,9 @@ static int sqlite3Fts5TokenizerInit(fts5_api *pApi){ { "unicode61", {fts5UnicodeCreate, fts5UnicodeDelete, fts5UnicodeTokenize}}, { "ascii", {fts5AsciiCreate, fts5AsciiDelete, fts5AsciiTokenize }}, { "porter", {fts5PorterCreate, fts5PorterDelete, fts5PorterTokenize }}, + { "trigram", {fts5TriCreate, fts5TriDelete, fts5TriTokenize}}, }; - + int rc = SQLITE_OK; /* Return code */ int i; /* To iterate through builtin functions */ @@ -210075,10 +248524,8 @@ static int sqlite3Fts5TokenizerInit(fts5_api *pApi){ return rc; } - - /* -** 2012 May 25 +** 2012-05-25 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -210097,135 +248544,6 @@ static int sqlite3Fts5TokenizerInit(fts5_api *pApi){ /* #include */ -/* -** Return true if the argument corresponds to a unicode codepoint -** classified as either a letter or a number. Otherwise false. -** -** The results are undefined if the value passed to this function -** is less than zero. -*/ -static int sqlite3Fts5UnicodeIsalnum(int c){ - /* Each unsigned integer in the following array corresponds to a contiguous - ** range of unicode codepoints that are not either letters or numbers (i.e. - ** codepoints for which this function should return 0). - ** - ** The most significant 22 bits in each 32-bit value contain the first - ** codepoint in the range. The least significant 10 bits are used to store - ** the size of the range (always at least 1). In other words, the value - ** ((C<<22) + N) represents a range of N codepoints starting with codepoint - ** C. It is not possible to represent a range larger than 1023 codepoints - ** using this format. - */ - static const unsigned int aEntry[] = { - 0x00000030, 0x0000E807, 0x00016C06, 0x0001EC2F, 0x0002AC07, - 0x0002D001, 0x0002D803, 0x0002EC01, 0x0002FC01, 0x00035C01, - 0x0003DC01, 0x000B0804, 0x000B480E, 0x000B9407, 0x000BB401, - 0x000BBC81, 0x000DD401, 0x000DF801, 0x000E1002, 0x000E1C01, - 0x000FD801, 0x00120808, 0x00156806, 0x00162402, 0x00163C01, - 0x00164437, 0x0017CC02, 0x00180005, 0x00181816, 0x00187802, - 0x00192C15, 0x0019A804, 0x0019C001, 0x001B5001, 0x001B580F, - 0x001B9C07, 0x001BF402, 0x001C000E, 0x001C3C01, 0x001C4401, - 0x001CC01B, 0x001E980B, 0x001FAC09, 0x001FD804, 0x00205804, - 0x00206C09, 0x00209403, 0x0020A405, 0x0020C00F, 0x00216403, - 0x00217801, 0x0023901B, 0x00240004, 0x0024E803, 0x0024F812, - 0x00254407, 0x00258804, 0x0025C001, 0x00260403, 0x0026F001, - 0x0026F807, 0x00271C02, 0x00272C03, 0x00275C01, 0x00278802, - 0x0027C802, 0x0027E802, 0x00280403, 0x0028F001, 0x0028F805, - 0x00291C02, 0x00292C03, 0x00294401, 0x0029C002, 0x0029D401, - 0x002A0403, 0x002AF001, 0x002AF808, 0x002B1C03, 0x002B2C03, - 0x002B8802, 0x002BC002, 0x002C0403, 0x002CF001, 0x002CF807, - 0x002D1C02, 0x002D2C03, 0x002D5802, 0x002D8802, 0x002DC001, - 0x002E0801, 0x002EF805, 0x002F1803, 0x002F2804, 0x002F5C01, - 0x002FCC08, 0x00300403, 0x0030F807, 0x00311803, 0x00312804, - 0x00315402, 0x00318802, 0x0031FC01, 0x00320802, 0x0032F001, - 0x0032F807, 0x00331803, 0x00332804, 0x00335402, 0x00338802, - 0x00340802, 0x0034F807, 0x00351803, 0x00352804, 0x00355C01, - 0x00358802, 0x0035E401, 0x00360802, 0x00372801, 0x00373C06, - 0x00375801, 0x00376008, 0x0037C803, 0x0038C401, 0x0038D007, - 0x0038FC01, 0x00391C09, 0x00396802, 0x003AC401, 0x003AD006, - 0x003AEC02, 0x003B2006, 0x003C041F, 0x003CD00C, 0x003DC417, - 0x003E340B, 0x003E6424, 0x003EF80F, 0x003F380D, 0x0040AC14, - 0x00412806, 0x00415804, 0x00417803, 0x00418803, 0x00419C07, - 0x0041C404, 0x0042080C, 0x00423C01, 0x00426806, 0x0043EC01, - 0x004D740C, 0x004E400A, 0x00500001, 0x0059B402, 0x005A0001, - 0x005A6C02, 0x005BAC03, 0x005C4803, 0x005CC805, 0x005D4802, - 0x005DC802, 0x005ED023, 0x005F6004, 0x005F7401, 0x0060000F, - 0x0062A401, 0x0064800C, 0x0064C00C, 0x00650001, 0x00651002, - 0x0066C011, 0x00672002, 0x00677822, 0x00685C05, 0x00687802, - 0x0069540A, 0x0069801D, 0x0069FC01, 0x006A8007, 0x006AA006, - 0x006C0005, 0x006CD011, 0x006D6823, 0x006E0003, 0x006E840D, - 0x006F980E, 0x006FF004, 0x00709014, 0x0070EC05, 0x0071F802, - 0x00730008, 0x00734019, 0x0073B401, 0x0073C803, 0x00770027, - 0x0077F004, 0x007EF401, 0x007EFC03, 0x007F3403, 0x007F7403, - 0x007FB403, 0x007FF402, 0x00800065, 0x0081A806, 0x0081E805, - 0x00822805, 0x0082801A, 0x00834021, 0x00840002, 0x00840C04, - 0x00842002, 0x00845001, 0x00845803, 0x00847806, 0x00849401, - 0x00849C01, 0x0084A401, 0x0084B801, 0x0084E802, 0x00850005, - 0x00852804, 0x00853C01, 0x00864264, 0x00900027, 0x0091000B, - 0x0092704E, 0x00940200, 0x009C0475, 0x009E53B9, 0x00AD400A, - 0x00B39406, 0x00B3BC03, 0x00B3E404, 0x00B3F802, 0x00B5C001, - 0x00B5FC01, 0x00B7804F, 0x00B8C00C, 0x00BA001A, 0x00BA6C59, - 0x00BC00D6, 0x00BFC00C, 0x00C00005, 0x00C02019, 0x00C0A807, - 0x00C0D802, 0x00C0F403, 0x00C26404, 0x00C28001, 0x00C3EC01, - 0x00C64002, 0x00C6580A, 0x00C70024, 0x00C8001F, 0x00C8A81E, - 0x00C94001, 0x00C98020, 0x00CA2827, 0x00CB003F, 0x00CC0100, - 0x01370040, 0x02924037, 0x0293F802, 0x02983403, 0x0299BC10, - 0x029A7C01, 0x029BC008, 0x029C0017, 0x029C8002, 0x029E2402, - 0x02A00801, 0x02A01801, 0x02A02C01, 0x02A08C09, 0x02A0D804, - 0x02A1D004, 0x02A20002, 0x02A2D011, 0x02A33802, 0x02A38012, - 0x02A3E003, 0x02A4980A, 0x02A51C0D, 0x02A57C01, 0x02A60004, - 0x02A6CC1B, 0x02A77802, 0x02A8A40E, 0x02A90C01, 0x02A93002, - 0x02A97004, 0x02A9DC03, 0x02A9EC01, 0x02AAC001, 0x02AAC803, - 0x02AADC02, 0x02AAF802, 0x02AB0401, 0x02AB7802, 0x02ABAC07, - 0x02ABD402, 0x02AF8C0B, 0x03600001, 0x036DFC02, 0x036FFC02, - 0x037FFC01, 0x03EC7801, 0x03ECA401, 0x03EEC810, 0x03F4F802, - 0x03F7F002, 0x03F8001A, 0x03F88007, 0x03F8C023, 0x03F95013, - 0x03F9A004, 0x03FBFC01, 0x03FC040F, 0x03FC6807, 0x03FCEC06, - 0x03FD6C0B, 0x03FF8007, 0x03FFA007, 0x03FFE405, 0x04040003, - 0x0404DC09, 0x0405E411, 0x0406400C, 0x0407402E, 0x040E7C01, - 0x040F4001, 0x04215C01, 0x04247C01, 0x0424FC01, 0x04280403, - 0x04281402, 0x04283004, 0x0428E003, 0x0428FC01, 0x04294009, - 0x0429FC01, 0x042CE407, 0x04400003, 0x0440E016, 0x04420003, - 0x0442C012, 0x04440003, 0x04449C0E, 0x04450004, 0x04460003, - 0x0446CC0E, 0x04471404, 0x045AAC0D, 0x0491C004, 0x05BD442E, - 0x05BE3C04, 0x074000F6, 0x07440027, 0x0744A4B5, 0x07480046, - 0x074C0057, 0x075B0401, 0x075B6C01, 0x075BEC01, 0x075C5401, - 0x075CD401, 0x075D3C01, 0x075DBC01, 0x075E2401, 0x075EA401, - 0x075F0C01, 0x07BBC002, 0x07C0002C, 0x07C0C064, 0x07C2800F, - 0x07C2C40E, 0x07C3040F, 0x07C3440F, 0x07C4401F, 0x07C4C03C, - 0x07C5C02B, 0x07C7981D, 0x07C8402B, 0x07C90009, 0x07C94002, - 0x07CC0021, 0x07CCC006, 0x07CCDC46, 0x07CE0014, 0x07CE8025, - 0x07CF1805, 0x07CF8011, 0x07D0003F, 0x07D10001, 0x07D108B6, - 0x07D3E404, 0x07D4003E, 0x07D50004, 0x07D54018, 0x07D7EC46, - 0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401, 0x38008060, - 0x380400F0, - }; - static const unsigned int aAscii[4] = { - 0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001, - }; - - if( (unsigned int)c<128 ){ - return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 ); - }else if( (unsigned int)c<(1<<22) ){ - unsigned int key = (((unsigned int)c)<<10) | 0x000003FF; - int iRes = 0; - int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1; - int iLo = 0; - while( iHi>=iLo ){ - int iTest = (iHi + iLo) / 2; - if( key >= aEntry[iTest] ){ - iRes = iTest; - iLo = iTest+1; - }else{ - iHi = iTest-1; - } - } - assert( aEntry[0]=aEntry[iRes] ); - return (((unsigned int)c) >= ((aEntry[iRes]>>10) + (aEntry[iRes]&0x3FF))); - } - return 1; -} /* @@ -210236,32 +248554,48 @@ static int sqlite3Fts5UnicodeIsalnum(int c){ ** E"). The resuls of passing a codepoint that corresponds to an ** uppercase letter are undefined. */ -static int fts5_remove_diacritic(int c){ +static int fts5_remove_diacritic(int c, int bComplex){ unsigned short aDia[] = { - 0, 1797, 1848, 1859, 1891, 1928, 1940, 1995, - 2024, 2040, 2060, 2110, 2168, 2206, 2264, 2286, - 2344, 2383, 2472, 2488, 2516, 2596, 2668, 2732, - 2782, 2842, 2894, 2954, 2984, 3000, 3028, 3336, - 3456, 3696, 3712, 3728, 3744, 3896, 3912, 3928, - 3968, 4008, 4040, 4106, 4138, 4170, 4202, 4234, - 4266, 4296, 4312, 4344, 4408, 4424, 4472, 4504, - 6148, 6198, 6264, 6280, 6360, 6429, 6505, 6529, - 61448, 61468, 61534, 61592, 61642, 61688, 61704, 61726, - 61784, 61800, 61836, 61880, 61914, 61948, 61998, 62122, - 62154, 62200, 62218, 62302, 62364, 62442, 62478, 62536, - 62554, 62584, 62604, 62640, 62648, 62656, 62664, 62730, - 62924, 63050, 63082, 63274, 63390, + 0, 1797, 1848, 1859, 1891, 1928, 1940, 1995, + 2024, 2040, 2060, 2110, 2168, 2206, 2264, 2286, + 2344, 2383, 2472, 2488, 2516, 2596, 2668, 2732, + 2782, 2842, 2894, 2954, 2984, 3000, 3028, 3336, + 3456, 3696, 3712, 3728, 3744, 3766, 3832, 3896, + 3912, 3928, 3944, 3968, 4008, 4040, 4056, 4106, + 4138, 4170, 4202, 4234, 4266, 4296, 4312, 4344, + 4408, 4424, 4442, 4472, 4488, 4504, 6148, 6198, + 6264, 6280, 6360, 6429, 6505, 6529, 61448, 61468, + 61512, 61534, 61592, 61610, 61642, 61672, 61688, 61704, + 61726, 61784, 61800, 61816, 61836, 61880, 61896, 61914, + 61948, 61998, 62062, 62122, 62154, 62184, 62200, 62218, + 62252, 62302, 62364, 62410, 62442, 62478, 62536, 62554, + 62584, 62604, 62640, 62648, 62656, 62664, 62730, 62766, + 62830, 62890, 62924, 62974, 63032, 63050, 63082, 63118, + 63182, 63242, 63274, 63310, 63368, 63390, }; - char aChar[] = { - '\0', 'a', 'c', 'e', 'i', 'n', 'o', 'u', 'y', 'y', 'a', 'c', - 'd', 'e', 'e', 'g', 'h', 'i', 'j', 'k', 'l', 'n', 'o', 'r', - 's', 't', 'u', 'u', 'w', 'y', 'z', 'o', 'u', 'a', 'i', 'o', - 'u', 'g', 'k', 'o', 'j', 'g', 'n', 'a', 'e', 'i', 'o', 'r', - 'u', 's', 't', 'h', 'a', 'e', 'o', 'y', '\0', '\0', '\0', '\0', - '\0', '\0', '\0', '\0', 'a', 'b', 'd', 'd', 'e', 'f', 'g', 'h', - 'h', 'i', 'k', 'l', 'l', 'm', 'n', 'p', 'r', 'r', 's', 't', - 'u', 'v', 'w', 'w', 'x', 'y', 'z', 'h', 't', 'w', 'y', 'a', - 'e', 'i', 'o', 'u', 'y', +#define HIBIT ((unsigned char)0x80) + unsigned char aChar[] = { + '\0', 'a', 'c', 'e', 'i', 'n', + 'o', 'u', 'y', 'y', 'a', 'c', + 'd', 'e', 'e', 'g', 'h', 'i', + 'j', 'k', 'l', 'n', 'o', 'r', + 's', 't', 'u', 'u', 'w', 'y', + 'z', 'o', 'u', 'a', 'i', 'o', + 'u', 'u'|HIBIT, 'a'|HIBIT, 'g', 'k', 'o', + 'o'|HIBIT, 'j', 'g', 'n', 'a'|HIBIT, 'a', + 'e', 'i', 'o', 'r', 'u', 's', + 't', 'h', 'a', 'e', 'o'|HIBIT, 'o', + 'o'|HIBIT, 'y', '\0', '\0', '\0', '\0', + '\0', '\0', '\0', '\0', 'a', 'b', + 'c'|HIBIT, 'd', 'd', 'e'|HIBIT, 'e', 'e'|HIBIT, + 'f', 'g', 'h', 'h', 'i', 'i'|HIBIT, + 'k', 'l', 'l'|HIBIT, 'l', 'm', 'n', + 'o'|HIBIT, 'p', 'r', 'r'|HIBIT, 'r', 's', + 's'|HIBIT, 't', 'u', 'u'|HIBIT, 'v', 'w', + 'w', 'x', 'y', 'z', 'h', 't', + 'w', 'y', 'a', 'a'|HIBIT, 'a'|HIBIT, 'a'|HIBIT, + 'e', 'e'|HIBIT, 'e'|HIBIT, 'i', 'o', 'o'|HIBIT, + 'o'|HIBIT, 'o'|HIBIT, 'u', 'u'|HIBIT, 'u'|HIBIT, 'y', }; unsigned int key = (((unsigned int)c)<<3) | 0x00000007; @@ -210278,7 +248612,8 @@ static int fts5_remove_diacritic(int c){ } } assert( key>=aDia[iRes] ); - return ((c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : (int)aChar[iRes]); + if( bComplex==0 && (aChar[iRes] & 0x80) ) return c; + return (c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : ((int)aChar[iRes] & 0x7F); } @@ -210291,8 +248626,8 @@ static int sqlite3Fts5UnicodeIsdiacritic(int c){ unsigned int mask1 = 0x000361F8; if( c<768 || c>817 ) return 0; return (c < 768+32) ? - (mask0 & (1 << (c-768))) : - (mask1 & (1 << (c-768-32))); + (mask0 & ((unsigned int)1 << (c-768))) : + (mask1 & ((unsigned int)1 << (c-768-32))); } @@ -210305,7 +248640,7 @@ static int sqlite3Fts5UnicodeIsdiacritic(int c){ ** The results are undefined if the value passed to this function ** is less than zero. */ -static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic){ +static int sqlite3Fts5UnicodeFold(int c, int eRemoveDiacritic){ /* Each entry in the following array defines a rule for folding a range ** of codepoints to lower case. The rule applies to a range of nRange ** codepoints starting at codepoint iCode. @@ -210382,19 +248717,19 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic){ {42802, 1, 62}, {42873, 1, 4}, {42877, 76, 1}, {42878, 1, 10}, {42891, 0, 1}, {42893, 74, 1}, {42896, 1, 4}, {42912, 1, 10}, {42922, 72, 1}, - {65313, 14, 26}, + {65313, 14, 26}, }; static const unsigned short aiOff[] = { - 1, 2, 8, 15, 16, 26, 28, 32, - 37, 38, 40, 48, 63, 64, 69, 71, - 79, 80, 116, 202, 203, 205, 206, 207, - 209, 210, 211, 213, 214, 217, 218, 219, - 775, 7264, 10792, 10795, 23228, 23256, 30204, 54721, - 54753, 54754, 54756, 54787, 54793, 54809, 57153, 57274, - 57921, 58019, 58363, 61722, 65268, 65341, 65373, 65406, - 65408, 65410, 65415, 65424, 65436, 65439, 65450, 65462, - 65472, 65476, 65478, 65480, 65482, 65488, 65506, 65511, - 65514, 65521, 65527, 65528, 65529, + 1, 2, 8, 15, 16, 26, 28, 32, + 37, 38, 40, 48, 63, 64, 69, 71, + 79, 80, 116, 202, 203, 205, 206, 207, + 209, 210, 211, 213, 214, 217, 218, 219, + 775, 7264, 10792, 10795, 23228, 23256, 30204, 54721, + 54753, 54754, 54756, 54787, 54793, 54809, 57153, 57274, + 57921, 58019, 58363, 61722, 65268, 65341, 65373, 65406, + 65408, 65410, 65415, 65424, 65436, 65439, 65450, 65462, + 65472, 65476, 65478, 65480, 65482, 65488, 65506, 65511, + 65514, 65521, 65527, 65528, 65529, }; int ret = c; @@ -210428,9 +248763,11 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic){ assert( ret>0 ); } - if( bRemoveDiacritic ) ret = fts5_remove_diacritic(ret); + if( eRemoveDiacritic ){ + ret = fts5_remove_diacritic(ret, eRemoveDiacritic==2); + } } - + else if( c>=66560 && c<66600 ){ ret = c + 40; } @@ -210438,6 +248775,534 @@ static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic){ return ret; } + +static int sqlite3Fts5UnicodeCatParse(const char *zCat, u8 *aArray){ + aArray[0] = 1; + switch( zCat[0] ){ + case 'C': + switch( zCat[1] ){ + case 'c': aArray[1] = 1; break; + case 'f': aArray[2] = 1; break; + case 'n': aArray[3] = 1; break; + case 's': aArray[4] = 1; break; + case 'o': aArray[31] = 1; break; + case '*': + aArray[1] = 1; + aArray[2] = 1; + aArray[3] = 1; + aArray[4] = 1; + aArray[31] = 1; + break; + default: return 1; } + break; + + case 'L': + switch( zCat[1] ){ + case 'l': aArray[5] = 1; break; + case 'm': aArray[6] = 1; break; + case 'o': aArray[7] = 1; break; + case 't': aArray[8] = 1; break; + case 'u': aArray[9] = 1; break; + case 'C': aArray[30] = 1; break; + case '*': + aArray[5] = 1; + aArray[6] = 1; + aArray[7] = 1; + aArray[8] = 1; + aArray[9] = 1; + aArray[30] = 1; + break; + default: return 1; } + break; + + case 'M': + switch( zCat[1] ){ + case 'c': aArray[10] = 1; break; + case 'e': aArray[11] = 1; break; + case 'n': aArray[12] = 1; break; + case '*': + aArray[10] = 1; + aArray[11] = 1; + aArray[12] = 1; + break; + default: return 1; } + break; + + case 'N': + switch( zCat[1] ){ + case 'd': aArray[13] = 1; break; + case 'l': aArray[14] = 1; break; + case 'o': aArray[15] = 1; break; + case '*': + aArray[13] = 1; + aArray[14] = 1; + aArray[15] = 1; + break; + default: return 1; } + break; + + case 'P': + switch( zCat[1] ){ + case 'c': aArray[16] = 1; break; + case 'd': aArray[17] = 1; break; + case 'e': aArray[18] = 1; break; + case 'f': aArray[19] = 1; break; + case 'i': aArray[20] = 1; break; + case 'o': aArray[21] = 1; break; + case 's': aArray[22] = 1; break; + case '*': + aArray[16] = 1; + aArray[17] = 1; + aArray[18] = 1; + aArray[19] = 1; + aArray[20] = 1; + aArray[21] = 1; + aArray[22] = 1; + break; + default: return 1; } + break; + + case 'S': + switch( zCat[1] ){ + case 'c': aArray[23] = 1; break; + case 'k': aArray[24] = 1; break; + case 'm': aArray[25] = 1; break; + case 'o': aArray[26] = 1; break; + case '*': + aArray[23] = 1; + aArray[24] = 1; + aArray[25] = 1; + aArray[26] = 1; + break; + default: return 1; } + break; + + case 'Z': + switch( zCat[1] ){ + case 'l': aArray[27] = 1; break; + case 'p': aArray[28] = 1; break; + case 's': aArray[29] = 1; break; + case '*': + aArray[27] = 1; + aArray[28] = 1; + aArray[29] = 1; + break; + default: return 1; } + break; + + } + return 0; +} + +static u16 aFts5UnicodeBlock[] = { + 0, 1471, 1753, 1760, 1760, 1760, 1760, 1760, 1760, 1760, + 1760, 1760, 1760, 1760, 1760, 1763, 1765, + }; +static u16 aFts5UnicodeMap[] = { + 0, 32, 33, 36, 37, 40, 41, 42, 43, 44, + 45, 46, 48, 58, 60, 63, 65, 91, 92, 93, + 94, 95, 96, 97, 123, 124, 125, 126, 127, 160, + 161, 162, 166, 167, 168, 169, 170, 171, 172, 173, + 174, 175, 176, 177, 178, 180, 181, 182, 184, 185, + 186, 187, 188, 191, 192, 215, 216, 223, 247, 248, + 256, 312, 313, 329, 330, 377, 383, 385, 387, 388, + 391, 394, 396, 398, 402, 403, 405, 406, 409, 412, + 414, 415, 417, 418, 423, 427, 428, 431, 434, 436, + 437, 440, 442, 443, 444, 446, 448, 452, 453, 454, + 455, 456, 457, 458, 459, 460, 461, 477, 478, 496, + 497, 498, 499, 500, 503, 505, 506, 564, 570, 572, + 573, 575, 577, 580, 583, 584, 592, 660, 661, 688, + 706, 710, 722, 736, 741, 748, 749, 750, 751, 768, + 880, 884, 885, 886, 890, 891, 894, 900, 902, 903, + 904, 908, 910, 912, 913, 931, 940, 975, 977, 978, + 981, 984, 1008, 1012, 1014, 1015, 1018, 1020, 1021, 1072, + 1120, 1154, 1155, 1160, 1162, 1217, 1231, 1232, 1329, 1369, + 1370, 1377, 1417, 1418, 1423, 1425, 1470, 1471, 1472, 1473, + 1475, 1476, 1478, 1479, 1488, 1520, 1523, 1536, 1542, 1545, + 1547, 1548, 1550, 1552, 1563, 1566, 1568, 1600, 1601, 1611, + 1632, 1642, 1646, 1648, 1649, 1748, 1749, 1750, 1757, 1758, + 1759, 1765, 1767, 1769, 1770, 1774, 1776, 1786, 1789, 1791, + 1792, 1807, 1808, 1809, 1810, 1840, 1869, 1958, 1969, 1984, + 1994, 2027, 2036, 2038, 2039, 2042, 2048, 2070, 2074, 2075, + 2084, 2085, 2088, 2089, 2096, 2112, 2137, 2142, 2208, 2210, + 2276, 2304, 2307, 2308, 2362, 2363, 2364, 2365, 2366, 2369, + 2377, 2381, 2382, 2384, 2385, 2392, 2402, 2404, 2406, 2416, + 2417, 2418, 2425, 2433, 2434, 2437, 2447, 2451, 2474, 2482, + 2486, 2492, 2493, 2494, 2497, 2503, 2507, 2509, 2510, 2519, + 2524, 2527, 2530, 2534, 2544, 2546, 2548, 2554, 2555, 2561, + 2563, 2565, 2575, 2579, 2602, 2610, 2613, 2616, 2620, 2622, + 2625, 2631, 2635, 2641, 2649, 2654, 2662, 2672, 2674, 2677, + 2689, 2691, 2693, 2703, 2707, 2730, 2738, 2741, 2748, 2749, + 2750, 2753, 2759, 2761, 2763, 2765, 2768, 2784, 2786, 2790, + 2800, 2801, 2817, 2818, 2821, 2831, 2835, 2858, 2866, 2869, + 2876, 2877, 2878, 2879, 2880, 2881, 2887, 2891, 2893, 2902, + 2903, 2908, 2911, 2914, 2918, 2928, 2929, 2930, 2946, 2947, + 2949, 2958, 2962, 2969, 2972, 2974, 2979, 2984, 2990, 3006, + 3008, 3009, 3014, 3018, 3021, 3024, 3031, 3046, 3056, 3059, + 3065, 3066, 3073, 3077, 3086, 3090, 3114, 3125, 3133, 3134, + 3137, 3142, 3146, 3157, 3160, 3168, 3170, 3174, 3192, 3199, + 3202, 3205, 3214, 3218, 3242, 3253, 3260, 3261, 3262, 3263, + 3264, 3270, 3271, 3274, 3276, 3285, 3294, 3296, 3298, 3302, + 3313, 3330, 3333, 3342, 3346, 3389, 3390, 3393, 3398, 3402, + 3405, 3406, 3415, 3424, 3426, 3430, 3440, 3449, 3450, 3458, + 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137, 58, 37, 137, 37, + 135, 37, 90, 69, 73, 185, 94, 101, 58, 57, + 90, 37, 58, 527, 1134, 94, 142, 47, 185, 186, + 89, 154, 57, 90, 57, 90, 57, 250, 57, 1018, + 89, 90, 57, 58, 57, 1018, 8601, 282, 153, 666, + 89, 250, 54, 50, 2618, 57, 986, 825, 1306, 217, + 602, 1274, 378, 1935, 2522, 719, 5882, 57, 314, 57, + 1754, 281, 3578, 57, 4634, 3322, 54, 50, 54, 50, + 54, 50, 54, 50, 54, 50, 54, 50, 54, 50, + 975, 1434, 185, 54, 50, 1017, 54, 50, 54, 50, + 54, 50, 54, 50, 54, 50, 537, 8218, 4217, 54, + 50, 54, 50, 54, 50, 54, 50, 54, 50, 54, + 50, 54, 50, 54, 50, 54, 50, 54, 50, 54, + 50, 2041, 54, 50, 54, 50, 1049, 54, 50, 8281, + 1562, 697, 90, 217, 346, 1513, 1509, 126, 73, 69, + 254, 105, 37, 94, 37, 94, 165, 70, 105, 37, + 3166, 37, 218, 158, 108, 94, 149, 47, 85, 1221, + 37, 37, 1799, 38, 53, 44, 743, 231, 231, 231, + 231, 231, 231, 231, 231, 1036, 85, 52, 51, 52, + 51, 117, 52, 51, 53, 52, 51, 309, 49, 85, + 49, 53, 52, 51, 85, 52, 51, 54, 50, 54, + 50, 54, 50, 54, 50, 181, 38, 341, 81, 858, + 2874, 6874, 410, 61, 117, 58, 38, 39, 46, 54, + 50, 54, 50, 54, 50, 54, 50, 54, 50, 90, + 54, 50, 54, 50, 54, 50, 54, 50, 49, 54, + 82, 58, 302, 140, 74, 49, 166, 90, 110, 38, + 39, 53, 90, 2759, 76, 88, 70, 39, 49, 2887, + 53, 102, 39, 1319, 3015, 90, 143, 346, 871, 1178, + 519, 1018, 335, 986, 271, 58, 495, 1050, 335, 1274, + 495, 2042, 8218, 39, 39, 2074, 39, 39, 679, 38, + 36583, 1786, 1287, 198, 85, 8583, 38, 117, 519, 333, + 71, 1502, 39, 44, 107, 53, 332, 53, 38, 798, + 44, 2247, 334, 76, 213, 760, 294, 88, 478, 69, + 2014, 38, 261, 190, 350, 38, 88, 158, 158, 382, + 70, 37, 231, 44, 103, 44, 135, 44, 743, 74, + 76, 42, 154, 207, 90, 55, 58, 1671, 149, 74, + 1607, 522, 44, 85, 333, 588, 199, 117, 39, 333, + 903, 268, 85, 743, 364, 74, 53, 935, 108, 42, + 1511, 44, 74, 140, 74, 44, 138, 437, 38, 333, + 85, 1319, 204, 74, 76, 74, 76, 103, 44, 263, + 44, 42, 333, 149, 519, 38, 199, 122, 39, 42, + 1543, 44, 39, 108, 71, 76, 167, 76, 39, 44, + 39, 71, 38, 85, 359, 42, 76, 74, 85, 39, + 70, 42, 44, 199, 199, 199, 231, 231, 1127, 74, + 44, 74, 44, 74, 53, 42, 44, 333, 39, 39, + 743, 1575, 36, 68, 68, 36, 63, 63, 11719, 3399, + 229, 165, 39, 44, 327, 57, 423, 167, 39, 71, + 71, 3463, 536, 11623, 54, 50, 2055, 1735, 391, 55, + 58, 524, 245, 54, 50, 53, 236, 53, 81, 80, + 54, 50, 54, 50, 54, 50, 54, 50, 54, 50, + 54, 50, 54, 50, 54, 50, 85, 54, 50, 149, + 112, 117, 149, 49, 54, 50, 54, 50, 54, 50, + 117, 57, 49, 121, 53, 55, 85, 167, 4327, 34, + 117, 55, 117, 54, 50, 53, 57, 53, 49, 85, + 333, 85, 121, 85, 841, 54, 53, 50, 56, 48, + 56, 837, 54, 57, 50, 57, 54, 50, 53, 54, + 50, 85, 327, 38, 1447, 70, 999, 199, 199, 199, + 103, 87, 57, 56, 58, 87, 58, 153, 90, 98, + 90, 391, 839, 615, 71, 487, 455, 3943, 117, 1455, + 314, 1710, 143, 570, 47, 410, 1466, 44, 935, 1575, + 999, 143, 551, 46, 263, 46, 967, 53, 1159, 263, + 53, 174, 1289, 1285, 2503, 333, 199, 39, 1415, 71, + 39, 743, 53, 271, 711, 207, 53, 839, 53, 1799, + 71, 39, 108, 76, 140, 135, 103, 871, 108, 44, + 271, 309, 935, 79, 53, 1735, 245, 711, 271, 615, + 271, 2343, 1007, 42, 44, 42, 1703, 492, 245, 655, + 333, 76, 42, 1447, 106, 140, 74, 76, 85, 34, + 149, 807, 333, 108, 1159, 172, 42, 268, 333, 149, + 76, 42, 1543, 106, 300, 74, 135, 149, 333, 1383, + 44, 42, 44, 74, 204, 42, 44, 333, 28135, 3182, + 149, 34279, 18215, 2215, 39, 1482, 140, 422, 71, 7898, + 1274, 1946, 74, 108, 122, 202, 258, 268, 90, 236, + 986, 140, 1562, 2138, 108, 58, 2810, 591, 841, 837, + 841, 229, 581, 841, 837, 41, 73, 41, 73, 137, + 265, 133, 37, 229, 357, 841, 837, 73, 137, 265, + 233, 837, 73, 137, 169, 41, 233, 837, 841, 837, + 841, 837, 841, 837, 841, 837, 841, 837, 841, 901, + 809, 57, 805, 57, 197, 809, 57, 805, 57, 197, + 809, 57, 805, 57, 197, 809, 57, 805, 57, 197, + 809, 57, 805, 57, 197, 94, 1613, 135, 871, 71, + 39, 39, 327, 135, 39, 39, 39, 39, 39, 39, + 103, 71, 39, 39, 39, 39, 39, 39, 71, 39, + 135, 231, 135, 135, 39, 327, 551, 103, 167, 551, + 89, 1434, 3226, 506, 474, 506, 506, 367, 1018, 1946, + 1402, 954, 1402, 314, 90, 1082, 218, 2266, 666, 1210, + 186, 570, 2042, 58, 5850, 154, 2010, 154, 794, 2266, + 378, 2266, 3738, 39, 39, 39, 39, 39, 39, 17351, + 34, 3074, 7692, 63, 63, + }; + +static int sqlite3Fts5UnicodeCategory(u32 iCode) { + int iRes = -1; + int iHi; + int iLo; + int ret; + u16 iKey; + + if( iCode>=(1<<20) ){ + return 0; + } + iLo = aFts5UnicodeBlock[(iCode>>16)]; + iHi = aFts5UnicodeBlock[1+(iCode>>16)]; + iKey = (iCode & 0xFFFF); + while( iHi>iLo ){ + int iTest = (iHi + iLo) / 2; + assert( iTest>=iLo && iTest=aFts5UnicodeMap[iTest] ){ + iRes = iTest; + iLo = iTest+1; + }else{ + iHi = iTest; + } + } + + if( iRes<0 ) return 0; + if( iKey>=(aFts5UnicodeMap[iRes]+(aFts5UnicodeData[iRes]>>5)) ) return 0; + ret = aFts5UnicodeData[iRes] & 0x1F; + if( ret!=30 ) return ret; + return ((iKey - aFts5UnicodeMap[iRes]) & 0x01) ? 5 : 9; +} + +static void sqlite3Fts5UnicodeAscii(u8 *aArray, u8 *aAscii){ + int i = 0; + int iTbl = 0; + while( i<128 ){ + int bToken = aArray[ aFts5UnicodeData[iTbl] & 0x1F ]; + int n = (aFts5UnicodeData[iTbl] >> 5) + i; + for(; i<128 && i3 && n<=9 ); return n; } @@ -210744,7 +249609,7 @@ static int FTS5_NOINLINE fts5PutVarint64(unsigned char *p, u64 v){ v >>= 7; } return 9; - } + } n = 0; do{ buf[n++] = (u8)((v & 0x7f) | 0x80); @@ -210783,7 +249648,6 @@ static int sqlite3Fts5GetVarintLen(u32 iVal){ return 5; } - /* ** 2015 May 08 ** @@ -210797,7 +249661,7 @@ static int sqlite3Fts5GetVarintLen(u32 iVal){ ****************************************************************************** ** ** This is an SQLite virtual table module implementing direct access to an -** existing FTS5 index. The module may create several different types of +** existing FTS5 index. The module may create several different types of ** tables: ** ** col: @@ -210805,21 +249669,21 @@ static int sqlite3Fts5GetVarintLen(u32 iVal){ ** ** One row for each term/column combination. The value of $doc is set to ** the number of fts5 rows that contain at least one instance of term -** $term within column $col. Field $cnt is set to the total number of -** instances of term $term in column $col (in any row of the fts5 table). +** $term within column $col. Field $cnt is set to the total number of +** instances of term $term in column $col (in any row of the fts5 table). ** ** row: ** CREATE TABLE vocab(term, doc, cnt, PRIMARY KEY(term)); ** ** One row for each term in the database. The value of $doc is set to ** the number of fts5 rows that contain at least one instance of term -** $term. Field $cnt is set to the total number of instances of term +** $term. Field $cnt is set to the total number of instances of term ** $term in the database. ** ** instance: ** CREATE TABLE vocab(term, doc, col, offset, PRIMARY KEY()); ** -** One row for each term instance in the database. +** One row for each term instance in the database. */ @@ -210836,21 +249700,22 @@ struct Fts5VocabTable { sqlite3 *db; /* Database handle */ Fts5Global *pGlobal; /* FTS5 global object for this database */ int eType; /* FTS5_VOCAB_COL, ROW or INSTANCE */ + unsigned bBusy; /* True if busy */ }; struct Fts5VocabCursor { sqlite3_vtab_cursor base; sqlite3_stmt *pStmt; /* Statement holding lock on pIndex */ - Fts5Index *pIndex; /* Associated FTS5 index */ + Fts5Table *pFts5; /* Associated FTS5 table */ int bEof; /* True if this cursor is at EOF */ Fts5IndexIter *pIter; /* Term/rowid iterator object */ + void *pStruct; /* From sqlite3Fts5StructureRef() */ int nLeTerm; /* Size of zLeTerm in bytes */ char *zLeTerm; /* (term <= $zLeTerm) paramater, or NULL */ /* These are used by 'col' tables only */ - Fts5Config *pConfig; /* Fts5 table configuration */ int iCol; i64 *aCnt; i64 *aDoc; @@ -210881,7 +249746,7 @@ struct Fts5VocabCursor { /* -** Translate a string containing an fts5vocab table type to an +** Translate a string containing an fts5vocab table type to an ** FTS5_VOCAB_XXX constant. If successful, set *peType to the output ** value and return SQLITE_OK. Otherwise, set *pzErr to an error message ** and return SQLITE_ERROR. @@ -210959,8 +249824,8 @@ static int fts5VocabInitVtab( sqlite3_vtab **ppVTab, /* Write the resulting vtab structure here */ char **pzErr /* Write any error message here */ ){ - const char *azSchema[] = { - "CREATE TABlE vocab(" FTS5_VOCAB_COL_SCHEMA ")", + const char *azSchema[] = { + "CREATE TABlE vocab(" FTS5_VOCAB_COL_SCHEMA ")", "CREATE TABlE vocab(" FTS5_VOCAB_ROW_SCHEMA ")", "CREATE TABlE vocab(" FTS5_VOCAB_INST_SCHEMA ")" }; @@ -210979,10 +249844,10 @@ static int fts5VocabInitVtab( const char *zDb = bDb ? argv[3] : argv[1]; const char *zTab = bDb ? argv[4] : argv[3]; const char *zType = bDb ? argv[5] : argv[4]; - int nDb = (int)strlen(zDb)+1; + int nDb = (int)strlen(zDb)+1; int nTab = (int)strlen(zTab)+1; int eType = 0; - + rc = fts5VocabTableType(zType, pzErr, &eType); if( rc==SQLITE_OK ){ assert( eType>=0 && eType= ? ** -** are interpreted. Less-than and less-than-or-equal are treated +** are interpreted. Less-than and less-than-or-equal are treated ** identically, as are greater-than and greater-than-or-equal. */ static int fts5VocabBestIndexMethod( @@ -211094,8 +249959,8 @@ static int fts5VocabBestIndexMethod( ** specifically - "ORDER BY term" or "ORDER BY term ASC" - set the ** sqlite3_index_info.orderByConsumed flag to tell the core the results ** are already in sorted order. */ - if( pInfo->nOrderBy==1 - && pInfo->aOrderBy[0].iColumn==0 + if( pInfo->nOrderBy==1 + && pInfo->aOrderBy[0].iColumn==0 && pInfo->aOrderBy[0].desc==0 ){ pInfo->orderByConsumed = 1; @@ -211109,17 +249974,22 @@ static int fts5VocabBestIndexMethod( ** Implementation of xOpen method. */ static int fts5VocabOpenMethod( - sqlite3_vtab *pVTab, + sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr ){ Fts5VocabTable *pTab = (Fts5VocabTable*)pVTab; - Fts5Index *pIndex = 0; - Fts5Config *pConfig = 0; + Fts5Table *pFts5 = 0; Fts5VocabCursor *pCsr = 0; int rc = SQLITE_OK; sqlite3_stmt *pStmt = 0; char *zSql = 0; + if( pTab->bBusy ){ + pVTab->zErrMsg = sqlite3_mprintf( + "recursive definition for %s.%s", pTab->zFts5Db, pTab->zFts5Tbl + ); + return SQLITE_ERROR; + } zSql = sqlite3Fts5Mprintf(&rc, "SELECT t.%Q FROM %Q.%Q AS t WHERE t.%Q MATCH '*id'", pTab->zFts5Tbl, pTab->zFts5Db, pTab->zFts5Tbl, pTab->zFts5Tbl @@ -211131,33 +250001,38 @@ static int fts5VocabOpenMethod( assert( rc==SQLITE_OK || pStmt==0 ); if( rc==SQLITE_ERROR ) rc = SQLITE_OK; + pTab->bBusy = 1; if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){ i64 iId = sqlite3_column_int64(pStmt, 0); - pIndex = sqlite3Fts5IndexFromCsrid(pTab->pGlobal, iId, &pConfig); + pFts5 = sqlite3Fts5TableFromCsrid(pTab->pGlobal, iId); } + pTab->bBusy = 0; - if( rc==SQLITE_OK && pIndex==0 ){ - rc = sqlite3_finalize(pStmt); - pStmt = 0; - if( rc==SQLITE_OK ){ - pVTab->zErrMsg = sqlite3_mprintf( - "no such fts5 table: %s.%s", pTab->zFts5Db, pTab->zFts5Tbl - ); - rc = SQLITE_ERROR; + if( rc==SQLITE_OK ){ + if( pFts5==0 ){ + rc = sqlite3_finalize(pStmt); + pStmt = 0; + if( rc==SQLITE_OK ){ + pVTab->zErrMsg = sqlite3_mprintf( + "no such fts5 table: %s.%s", pTab->zFts5Db, pTab->zFts5Tbl + ); + rc = SQLITE_ERROR; + } + }else{ + rc = sqlite3Fts5FlushToDisk(pFts5); } } if( rc==SQLITE_OK ){ - int nByte = pConfig->nCol * sizeof(i64) * 2 + sizeof(Fts5VocabCursor); + i64 nByte = pFts5->pConfig->nCol * sizeof(i64)*2 + sizeof(Fts5VocabCursor); pCsr = (Fts5VocabCursor*)sqlite3Fts5MallocZero(&rc, nByte); } if( pCsr ){ - pCsr->pIndex = pIndex; + pCsr->pFts5 = pFts5; pCsr->pStmt = pStmt; - pCsr->pConfig = pConfig; pCsr->aCnt = (i64*)&pCsr[1]; - pCsr->aDoc = &pCsr->aCnt[pConfig->nCol]; + pCsr->aDoc = &pCsr->aCnt[pFts5->pConfig->nCol]; }else{ sqlite3_finalize(pStmt); } @@ -211169,10 +250044,13 @@ static int fts5VocabOpenMethod( static void fts5VocabResetCursor(Fts5VocabCursor *pCsr){ pCsr->rowid = 0; sqlite3Fts5IterClose(pCsr->pIter); + sqlite3Fts5StructureRelease(pCsr->pStruct); + pCsr->pStruct = 0; pCsr->pIter = 0; sqlite3_free(pCsr->zLeTerm); pCsr->nLeTerm = -1; pCsr->zLeTerm = 0; + pCsr->bEof = 0; } /* @@ -211190,7 +250068,7 @@ static int fts5VocabCloseMethod(sqlite3_vtab_cursor *pCursor){ static int fts5VocabInstanceNewTerm(Fts5VocabCursor *pCsr){ int rc = SQLITE_OK; - + if( sqlite3Fts5IterEof(pCsr->pIter) ){ pCsr->bEof = 1; }else{ @@ -211211,14 +250089,16 @@ static int fts5VocabInstanceNewTerm(Fts5VocabCursor *pCsr){ } static int fts5VocabInstanceNext(Fts5VocabCursor *pCsr){ - int eDetail = pCsr->pConfig->eDetail; + int eDetail = pCsr->pFts5->pConfig->eDetail; int rc = SQLITE_OK; Fts5IndexIter *pIter = pCsr->pIter; i64 *pp = &pCsr->iInstPos; int *po = &pCsr->iInstOff; - + + assert( sqlite3Fts5IterEof(pIter)==0 ); + assert( pCsr->bEof==0 ); while( eDetail==FTS5_DETAIL_NONE - || sqlite3Fts5PoslistNext64(pIter->pData, pIter->nData, po, pp) + || sqlite3Fts5PoslistNext64(pIter->pData, pIter->nData, po, pp) ){ pCsr->iInstPos = 0; pCsr->iInstOff = 0; @@ -211226,7 +250106,7 @@ static int fts5VocabInstanceNext(Fts5VocabCursor *pCsr){ rc = sqlite3Fts5IterNextScan(pCsr->pIter); if( rc==SQLITE_OK ){ rc = fts5VocabInstanceNewTerm(pCsr); - if( eDetail==FTS5_DETAIL_NONE ) break; + if( pCsr->bEof || eDetail==FTS5_DETAIL_NONE ) break; } if( rc ){ pCsr->bEof = 1; @@ -211243,9 +250123,11 @@ static int fts5VocabInstanceNext(Fts5VocabCursor *pCsr){ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; Fts5VocabTable *pTab = (Fts5VocabTable*)pCursor->pVtab; - int rc = SQLITE_OK; - int nCol = pCsr->pConfig->nCol; + int nCol = pCsr->pFts5->pConfig->nCol; + int rc; + rc = sqlite3Fts5StructureTest(pCsr->pFts5->pIndex, pCsr->pStruct); + if( rc!=SQLITE_OK ) return rc; pCsr->rowid++; if( pTab->eType==FTS5_VOCAB_INSTANCE ){ @@ -211266,6 +250148,7 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ int nTerm; zTerm = sqlite3Fts5IterTerm(pCsr->pIter, &nTerm); + assert( nTerm>=0 ); if( pCsr->nLeTerm>=0 ){ int nCmp = MIN(nTerm, pCsr->nLeTerm); int bCmp = memcmp(pCsr->zLeTerm, zTerm, nCmp); @@ -211282,7 +250165,7 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ assert( pTab->eType==FTS5_VOCAB_COL || pTab->eType==FTS5_VOCAB_ROW ); while( rc==SQLITE_OK ){ - int eDetail = pCsr->pConfig->eDetail; + int eDetail = pCsr->pFts5->pConfig->eDetail; const u8 *pPos; int nPos; /* Position list */ i64 iPos = 0; /* 64-bit position read from poslist */ int iOff = 0; /* Current offset within position list */ @@ -211305,7 +250188,6 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ int iCol = -1; while( 0==sqlite3Fts5PoslistNext64(pPos, nPos, &iOff, &iPos) ){ int ii = FTS5_POS2COLUMN(iPos); - pCsr->aCnt[ii]++; if( iCol!=ii ){ if( ii>=nCol ){ rc = FTS5_CORRUPT; @@ -211314,6 +250196,7 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ pCsr->aDoc[ii]++; iCol = ii; } + pCsr->aCnt[ii]++; } }else if( eDetail==FTS5_DETAIL_COLUMNS ){ while( 0==sqlite3Fts5PoslistNext64(pPos, nPos, &iOff,&iPos) ){ @@ -211342,7 +250225,9 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ if( rc==SQLITE_OK ){ zTerm = sqlite3Fts5IterTerm(pCsr->pIter, &nTerm); - if( nTerm!=pCsr->term.n || memcmp(zTerm, pCsr->term.p, nTerm) ){ + if( nTerm!=pCsr->term.n + || (nTerm>0 && memcmp(zTerm, pCsr->term.p, nTerm)) + ){ break; } if( sqlite3Fts5IterEof(pCsr->pIter) ) break; @@ -211352,8 +250237,10 @@ static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ } if( rc==SQLITE_OK && pCsr->bEof==0 && pTab->eType==FTS5_VOCAB_COL ){ - while( pCsr->aDoc[pCsr->iCol]==0 ) pCsr->iCol++; - assert( pCsr->iColpConfig->nCol ); + for(/* noop */; pCsr->iColaDoc[pCsr->iCol]==0; pCsr->iCol++); + if( pCsr->iCol==nCol ){ + rc = FTS5_CORRUPT; + } } return rc; } @@ -211400,6 +250287,7 @@ static int fts5VocabFilterMethod( } if( pLe ){ const char *zCopy = (const char *)sqlite3_value_text(pLe); + if( zCopy==0 ) zCopy = ""; pCsr->nLeTerm = sqlite3_value_bytes(pLe); pCsr->zLeTerm = sqlite3_malloc(pCsr->nLeTerm+1); if( pCsr->zLeTerm==0 ){ @@ -211411,14 +250299,18 @@ static int fts5VocabFilterMethod( } if( rc==SQLITE_OK ){ - rc = sqlite3Fts5IndexQuery(pCsr->pIndex, zTerm, nTerm, f, 0, &pCsr->pIter); + Fts5Index *pIndex = pCsr->pFts5->pIndex; + rc = sqlite3Fts5IndexQuery(pIndex, zTerm, nTerm, f, 0, &pCsr->pIter); + if( rc==SQLITE_OK ){ + pCsr->pStruct = sqlite3Fts5StructureRef(pIndex); + } } if( rc==SQLITE_OK && eType==FTS5_VOCAB_INSTANCE ){ rc = fts5VocabInstanceNewTerm(pCsr); } - if( rc==SQLITE_OK - && !pCsr->bEof - && (eType!=FTS5_VOCAB_INSTANCE || pCsr->pConfig->eDetail!=FTS5_DETAIL_NONE) + if( rc==SQLITE_OK && !pCsr->bEof + && (eType!=FTS5_VOCAB_INSTANCE + || pCsr->pFts5->pConfig->eDetail!=FTS5_DETAIL_NONE) ){ rc = fts5VocabNextMethod(pCursor); } @@ -211426,8 +250318,8 @@ static int fts5VocabFilterMethod( return rc; } -/* -** This is the xEof method of the virtual table. SQLite calls this +/* +** This is the xEof method of the virtual table. SQLite calls this ** routine to find out if it has reached the end of a result set. */ static int fts5VocabEofMethod(sqlite3_vtab_cursor *pCursor){ @@ -211441,7 +250333,7 @@ static int fts5VocabColumnMethod( int iCol /* Index of column to read value from */ ){ Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; - int eDetail = pCsr->pConfig->eDetail; + int eDetail = pCsr->pFts5->pConfig->eDetail; int eType = ((Fts5VocabTable*)(pCursor->pVtab))->eType; i64 iVal = 0; @@ -211453,7 +250345,7 @@ static int fts5VocabColumnMethod( assert( iCol==1 || iCol==2 || iCol==3 ); if( iCol==1 ){ if( eDetail!=FTS5_DETAIL_NONE ){ - const char *z = pCsr->pConfig->azCol[pCsr->iCol]; + const char *z = pCsr->pFts5->pConfig->azCol[pCsr->iCol]; sqlite3_result_text(pCtx, z, -1, SQLITE_STATIC); } }else if( iCol==2 ){ @@ -211481,8 +250373,8 @@ static int fts5VocabColumnMethod( }else if( eDetail==FTS5_DETAIL_COLUMNS ){ ii = (int)pCsr->iInstPos; } - if( ii>=0 && iipConfig->nCol ){ - const char *z = pCsr->pConfig->azCol[ii]; + if( ii>=0 && iipFts5->pConfig->nCol ){ + const char *z = pCsr->pFts5->pConfig->azCol[ii]; sqlite3_result_text(pCtx, z, -1, SQLITE_STATIC); } break; @@ -211502,13 +250394,13 @@ static int fts5VocabColumnMethod( return SQLITE_OK; } -/* +/* ** This is the xRowid method. The SQLite core calls this routine to ** retrieve the rowid for the current row of the result set. The ** rowid should be written to *pRowid. */ static int fts5VocabRowidMethod( - sqlite3_vtab_cursor *pCursor, + sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid ){ Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; @@ -211541,6 +250433,7 @@ static int sqlite3Fts5VocabInit(Fts5Global *pGlobal, sqlite3 *db){ /* xSavepoint */ 0, /* xRelease */ 0, /* xRollbackTo */ 0, + /* xShadowName */ 0 }; void *p = (void*)pGlobal; @@ -211549,8 +250442,6 @@ static int sqlite3Fts5VocabInit(Fts5Global *pGlobal, sqlite3 *db){ - - #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS5) */ /************** End of fts5.c ************************************************/ @@ -211587,6 +250478,16 @@ SQLITE_EXTENSION_INIT1 #ifndef SQLITE_OMIT_VIRTUALTABLE + +#define STMT_NUM_INTEGER_COLUMN 10 +typedef struct StmtRow StmtRow; +struct StmtRow { + sqlite3_int64 iRowid; /* Rowid value */ + char *zSql; /* column "sql" */ + int aCol[STMT_NUM_INTEGER_COLUMN+1]; /* all other column values */ + StmtRow *pNext; /* Next row to return */ +}; + /* stmt_vtab is a subclass of sqlite3_vtab which will ** serve as the underlying representation of a stmt virtual table */ @@ -211604,8 +250505,7 @@ typedef struct stmt_cursor stmt_cursor; struct stmt_cursor { sqlite3_vtab_cursor base; /* Base class - must be first */ sqlite3 *db; /* Database connection for this cursor */ - sqlite3_stmt *pStmt; /* Statement cursor is currently pointing at */ - sqlite3_int64 iRowid; /* The rowid */ + StmtRow *pRow; /* Current row */ }; /* @@ -211645,11 +250545,15 @@ static int stmtConnect( #define STMT_COLUMN_MEM 10 /* SQLITE_STMTSTATUS_MEMUSED */ + (void)pAux; + (void)argc; + (void)argv; + (void)pzErr; rc = sqlite3_declare_vtab(db, "CREATE TABLE x(sql,ncol,ro,busy,nscan,nsort,naidx,nstep," "reprep,run,mem)"); if( rc==SQLITE_OK ){ - pNew = sqlite3_malloc( sizeof(*pNew) ); + pNew = sqlite3_malloc64( sizeof(*pNew) ); *ppVtab = (sqlite3_vtab*)pNew; if( pNew==0 ) return SQLITE_NOMEM; memset(pNew, 0, sizeof(*pNew)); @@ -211671,7 +250575,7 @@ static int stmtDisconnect(sqlite3_vtab *pVtab){ */ static int stmtOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ stmt_cursor *pCur; - pCur = sqlite3_malloc( sizeof(*pCur) ); + pCur = sqlite3_malloc64( sizeof(*pCur) ); if( pCur==0 ) return SQLITE_NOMEM; memset(pCur, 0, sizeof(*pCur)); pCur->db = ((stmt_vtab*)p)->db; @@ -211679,10 +250583,21 @@ static int stmtOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ return SQLITE_OK; } +static void stmtCsrReset(stmt_cursor *pCur){ + StmtRow *pRow = 0; + StmtRow *pNext = 0; + for(pRow=pCur->pRow; pRow; pRow=pNext){ + pNext = pRow->pNext; + sqlite3_free(pRow); + } + pCur->pRow = 0; +} + /* ** Destructor for a stmt_cursor. */ static int stmtClose(sqlite3_vtab_cursor *cur){ + stmtCsrReset((stmt_cursor*)cur); sqlite3_free(cur); return SQLITE_OK; } @@ -211693,8 +250608,9 @@ static int stmtClose(sqlite3_vtab_cursor *cur){ */ static int stmtNext(sqlite3_vtab_cursor *cur){ stmt_cursor *pCur = (stmt_cursor*)cur; - pCur->iRowid++; - pCur->pStmt = sqlite3_next_stmt(pCur->db, pCur->pStmt); + StmtRow *pNext = pCur->pRow->pNext; + sqlite3_free(pCur->pRow); + pCur->pRow = pNext; return SQLITE_OK; } @@ -211708,38 +250624,11 @@ static int stmtColumn( int i /* Which column to return */ ){ stmt_cursor *pCur = (stmt_cursor*)cur; - switch( i ){ - case STMT_COLUMN_SQL: { - sqlite3_result_text(ctx, sqlite3_sql(pCur->pStmt), -1, SQLITE_TRANSIENT); - break; - } - case STMT_COLUMN_NCOL: { - sqlite3_result_int(ctx, sqlite3_column_count(pCur->pStmt)); - break; - } - case STMT_COLUMN_RO: { - sqlite3_result_int(ctx, sqlite3_stmt_readonly(pCur->pStmt)); - break; - } - case STMT_COLUMN_BUSY: { - sqlite3_result_int(ctx, sqlite3_stmt_busy(pCur->pStmt)); - break; - } - case STMT_COLUMN_MEM: { - i = SQLITE_STMTSTATUS_MEMUSED + - STMT_COLUMN_NSCAN - SQLITE_STMTSTATUS_FULLSCAN_STEP; - /* Fall thru */ - } - case STMT_COLUMN_NSCAN: - case STMT_COLUMN_NSORT: - case STMT_COLUMN_NAIDX: - case STMT_COLUMN_NSTEP: - case STMT_COLUMN_REPREP: - case STMT_COLUMN_RUN: { - sqlite3_result_int(ctx, sqlite3_stmt_status(pCur->pStmt, - i-STMT_COLUMN_NSCAN+SQLITE_STMTSTATUS_FULLSCAN_STEP, 0)); - break; - } + StmtRow *pRow = pCur->pRow; + if( i==STMT_COLUMN_SQL ){ + sqlite3_result_text(ctx, pRow->zSql, -1, SQLITE_TRANSIENT); + }else{ + sqlite3_result_int(ctx, pRow->aCol[i]); } return SQLITE_OK; } @@ -211750,7 +250639,7 @@ static int stmtColumn( */ static int stmtRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ stmt_cursor *pCur = (stmt_cursor*)cur; - *pRowid = pCur->iRowid; + *pRowid = pCur->pRow->iRowid; return SQLITE_OK; } @@ -211760,24 +250649,72 @@ static int stmtRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ */ static int stmtEof(sqlite3_vtab_cursor *cur){ stmt_cursor *pCur = (stmt_cursor*)cur; - return pCur->pStmt==0; + return pCur->pRow==0; } /* ** This method is called to "rewind" the stmt_cursor object back ** to the first row of output. This method is always called at least -** once prior to any call to stmtColumn() or stmtRowid() or +** once prior to any call to stmtColumn() or stmtRowid() or ** stmtEof(). */ static int stmtFilter( - sqlite3_vtab_cursor *pVtabCursor, + sqlite3_vtab_cursor *pVtabCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv ){ stmt_cursor *pCur = (stmt_cursor *)pVtabCursor; - pCur->pStmt = 0; - pCur->iRowid = 0; - return stmtNext(pVtabCursor); + sqlite3_stmt *p = 0; + sqlite3_int64 iRowid = 1; + StmtRow **ppRow = 0; + + (void)idxNum; + (void)idxStr; + (void)argc; + (void)argv; + stmtCsrReset(pCur); + ppRow = &pCur->pRow; + for(p=sqlite3_next_stmt(pCur->db, 0); p; p=sqlite3_next_stmt(pCur->db, p)){ + const char *zSql = sqlite3_sql(p); + sqlite3_int64 nSql = zSql ? strlen(zSql)+1 : 0; + StmtRow *pNew = (StmtRow*)sqlite3_malloc64(sizeof(StmtRow) + nSql); + + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(StmtRow)); + if( zSql ){ + pNew->zSql = (char*)&pNew[1]; + memcpy(pNew->zSql, zSql, nSql); + } + pNew->aCol[STMT_COLUMN_NCOL] = sqlite3_column_count(p); + pNew->aCol[STMT_COLUMN_RO] = sqlite3_stmt_readonly(p); + pNew->aCol[STMT_COLUMN_BUSY] = sqlite3_stmt_busy(p); + pNew->aCol[STMT_COLUMN_NSCAN] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_FULLSCAN_STEP, 0 + ); + pNew->aCol[STMT_COLUMN_NSORT] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_SORT, 0 + ); + pNew->aCol[STMT_COLUMN_NAIDX] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_AUTOINDEX, 0 + ); + pNew->aCol[STMT_COLUMN_NSTEP] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_VM_STEP, 0 + ); + pNew->aCol[STMT_COLUMN_REPREP] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_REPREPARE, 0 + ); + pNew->aCol[STMT_COLUMN_RUN] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_RUN, 0 + ); + pNew->aCol[STMT_COLUMN_MEM] = sqlite3_stmt_status( + p, SQLITE_STMTSTATUS_MEMUSED, 0 + ); + pNew->iRowid = iRowid++; + *ppRow = pNew; + ppRow = &pNew->pNext; + } + + return SQLITE_OK; } /* @@ -211790,13 +250727,14 @@ static int stmtBestIndex( sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo ){ + (void)tab; pIdxInfo->estimatedCost = (double)500; pIdxInfo->estimatedRows = 500; return SQLITE_OK; } /* -** This following structure defines all the methods for the +** This following structure defines all the methods for the ** stmt virtual table. */ static sqlite3_module stmtModule = { @@ -211823,6 +250761,7 @@ static sqlite3_module stmtModule = { 0, /* xSavepoint */ 0, /* xRelease */ 0, /* xRollbackTo */ + 0, /* xShadowName */ }; #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -211840,8 +250779,8 @@ SQLITE_PRIVATE int sqlite3StmtVtabInit(sqlite3 *db){ __declspec(dllexport) #endif SQLITE_API int sqlite3_stmt_init( - sqlite3 *db, - char **pzErrMsg, + sqlite3 *db, + char **pzErrMsg, const sqlite3_api_routines *pApi ){ int rc = SQLITE_OK; @@ -211855,10 +250794,6 @@ SQLITE_API int sqlite3_stmt_init( #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */ /************** End of stmt.c ************************************************/ -#if __LINE__!=211858 -#undef SQLITE_SOURCE_ID -#define SQLITE_SOURCE_ID "2018-06-04 19:24:41 c7ee0833225bfd8c5ec2f9bf62b97c4e04d03bd9566366d5221ac8fb199aalt2" -#endif /* Return the source-id for this library */ SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; } /************************** End of sqlite3.c ******************************/ diff --git a/vendor/sqlite/version.txt b/vendor/sqlite/version.txt index 954e22882..a9184766b 100644 --- a/vendor/sqlite/version.txt +++ b/vendor/sqlite/version.txt @@ -1 +1 @@ -3.24.0 +3.43.0