Update sqlite to 3.8.4.1.
Updating to 3.8.4.1 fixes some minor performance problems and also gains support for CTEs (common table expressions).
This commit is contained in:
John K. Luebs
parent
fb0ae12484
commit
8c7b228d93
223
sqlite3.h
223
sqlite3.h
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@ -107,9 +107,9 @@ extern "C" {
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** [sqlite3_libversion_number()], [sqlite3_sourceid()],
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** [sqlite_version()] and [sqlite_source_id()].
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*/
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#define SQLITE_VERSION "3.8.0"
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#define SQLITE_VERSION_NUMBER 3008000
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#define SQLITE_SOURCE_ID "2013-08-07 23:15:52 3adb6c1bfda897859dc9cf9ae7f1e6719855ee68"
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#define SQLITE_VERSION "3.8.4.1"
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#define SQLITE_VERSION_NUMBER 3008004
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#define SQLITE_SOURCE_ID "2014-03-11 15:27:36 018d317b1257ce68a92908b05c9c7cf1494050d0"
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/*
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** CAPI3REF: Run-Time Library Version Numbers
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@ -370,7 +370,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**);
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** <ul>
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** <li> The application must insure that the 1st parameter to sqlite3_exec()
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** is a valid and open [database connection].
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** <li> The application must not close [database connection] specified by
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** <li> The application must not close the [database connection] specified by
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** the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
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** <li> The application must not modify the SQL statement text passed into
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** the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
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@ -447,7 +447,7 @@ SQLITE_API int sqlite3_exec(
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** [sqlite3_extended_result_codes()] API.
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**
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** Some of the available extended result codes are listed here.
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** One may expect the number of extended result codes will be expand
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** One may expect the number of extended result codes will increase
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** over time. Software that uses extended result codes should expect
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** to see new result codes in future releases of SQLite.
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**
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@ -479,16 +479,19 @@ SQLITE_API int sqlite3_exec(
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#define SQLITE_IOERR_DELETE_NOENT (SQLITE_IOERR | (23<<8))
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#define SQLITE_IOERR_MMAP (SQLITE_IOERR | (24<<8))
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#define SQLITE_IOERR_GETTEMPPATH (SQLITE_IOERR | (25<<8))
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#define SQLITE_IOERR_CONVPATH (SQLITE_IOERR | (26<<8))
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#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
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#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
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#define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8))
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#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
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#define SQLITE_CANTOPEN_ISDIR (SQLITE_CANTOPEN | (2<<8))
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#define SQLITE_CANTOPEN_FULLPATH (SQLITE_CANTOPEN | (3<<8))
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#define SQLITE_CANTOPEN_CONVPATH (SQLITE_CANTOPEN | (4<<8))
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#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8))
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#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
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#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
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#define SQLITE_READONLY_ROLLBACK (SQLITE_READONLY | (3<<8))
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#define SQLITE_READONLY_DBMOVED (SQLITE_READONLY | (4<<8))
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#define SQLITE_ABORT_ROLLBACK (SQLITE_ABORT | (2<<8))
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#define SQLITE_CONSTRAINT_CHECK (SQLITE_CONSTRAINT | (1<<8))
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#define SQLITE_CONSTRAINT_COMMITHOOK (SQLITE_CONSTRAINT | (2<<8))
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@ -499,6 +502,7 @@ SQLITE_API int sqlite3_exec(
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#define SQLITE_CONSTRAINT_TRIGGER (SQLITE_CONSTRAINT | (7<<8))
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#define SQLITE_CONSTRAINT_UNIQUE (SQLITE_CONSTRAINT | (8<<8))
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#define SQLITE_CONSTRAINT_VTAB (SQLITE_CONSTRAINT | (9<<8))
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#define SQLITE_CONSTRAINT_ROWID (SQLITE_CONSTRAINT |(10<<8))
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#define SQLITE_NOTICE_RECOVER_WAL (SQLITE_NOTICE | (1<<8))
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#define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8))
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#define SQLITE_WARNING_AUTOINDEX (SQLITE_WARNING | (1<<8))
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@ -555,7 +559,8 @@ SQLITE_API int sqlite3_exec(
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** after reboot following a crash or power loss, the only bytes in a
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** file that were written at the application level might have changed
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** and that adjacent bytes, even bytes within the same sector are
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** guaranteed to be unchanged.
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** guaranteed to be unchanged. The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN
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** flag indicate that a file cannot be deleted when open.
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*/
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#define SQLITE_IOCAP_ATOMIC 0x00000001
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#define SQLITE_IOCAP_ATOMIC512 0x00000002
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@ -786,15 +791,29 @@ struct sqlite3_io_methods {
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** additional information.
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**
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** <li>[[SQLITE_FCNTL_SYNC_OMITTED]]
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** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by
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** SQLite and sent to all VFSes in place of a call to the xSync method
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** when the database connection has [PRAGMA synchronous] set to OFF.)^
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** Some specialized VFSes need this signal in order to operate correctly
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** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most
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** VFSes do not need this signal and should silently ignore this opcode.
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** Applications should not call [sqlite3_file_control()] with this
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** opcode as doing so may disrupt the operation of the specialized VFSes
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** that do require it.
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** No longer in use.
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**
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** <li>[[SQLITE_FCNTL_SYNC]]
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** The [SQLITE_FCNTL_SYNC] opcode is generated internally by SQLite and
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** sent to the VFS immediately before the xSync method is invoked on a
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** database file descriptor. Or, if the xSync method is not invoked
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** because the user has configured SQLite with
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** [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place
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** of the xSync method. In most cases, the pointer argument passed with
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** this file-control is NULL. However, if the database file is being synced
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** as part of a multi-database commit, the argument points to a nul-terminated
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** string containing the transactions master-journal file name. VFSes that
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** do not need this signal should silently ignore this opcode. Applications
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** should not call [sqlite3_file_control()] with this opcode as doing so may
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** disrupt the operation of the specialized VFSes that do require it.
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**
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** <li>[[SQLITE_FCNTL_COMMIT_PHASETWO]]
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** The [SQLITE_FCNTL_COMMIT_PHASETWO] opcode is generated internally by SQLite
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** and sent to the VFS after a transaction has been committed immediately
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** but before the database is unlocked. VFSes that do not need this signal
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** should silently ignore this opcode. Applications should not call
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** [sqlite3_file_control()] with this opcode as doing so may disrupt the
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** operation of the specialized VFSes that do require it.
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**
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** <li>[[SQLITE_FCNTL_WIN32_AV_RETRY]]
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** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
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@ -910,6 +929,20 @@ struct sqlite3_io_methods {
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** can be queried by passing in a pointer to a negative number. This
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** file-control is used internally to implement [PRAGMA mmap_size].
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**
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** <li>[[SQLITE_FCNTL_TRACE]]
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** The [SQLITE_FCNTL_TRACE] file control provides advisory information
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** to the VFS about what the higher layers of the SQLite stack are doing.
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** This file control is used by some VFS activity tracing [shims].
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** The argument is a zero-terminated string. Higher layers in the
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** SQLite stack may generate instances of this file control if
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** the [SQLITE_USE_FCNTL_TRACE] compile-time option is enabled.
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**
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** <li>[[SQLITE_FCNTL_HAS_MOVED]]
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** The [SQLITE_FCNTL_HAS_MOVED] file control interprets its argument as a
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** pointer to an integer and it writes a boolean into that integer depending
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** on whether or not the file has been renamed, moved, or deleted since it
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** was first opened.
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**
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** </ul>
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*/
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#define SQLITE_FCNTL_LOCKSTATE 1
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@ -929,6 +962,10 @@ struct sqlite3_io_methods {
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#define SQLITE_FCNTL_BUSYHANDLER 15
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#define SQLITE_FCNTL_TEMPFILENAME 16
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#define SQLITE_FCNTL_MMAP_SIZE 18
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#define SQLITE_FCNTL_TRACE 19
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#define SQLITE_FCNTL_HAS_MOVED 20
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#define SQLITE_FCNTL_SYNC 21
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#define SQLITE_FCNTL_COMMIT_PHASETWO 22
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/*
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** CAPI3REF: Mutex Handle
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@ -1373,7 +1410,7 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...);
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** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0,
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** that causes the corresponding memory allocation to fail.
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**
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** The xInit method initializes the memory allocator. (For example,
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** The xInit method initializes the memory allocator. For example,
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** it might allocate any require mutexes or initialize internal data
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** structures. The xShutdown method is invoked (indirectly) by
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** [sqlite3_shutdown()] and should deallocate any resources acquired
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@ -1615,27 +1652,27 @@ struct sqlite3_mem_methods {
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** function must be threadsafe. </dd>
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**
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** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
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** <dd> This option takes a single argument of type int. If non-zero, then
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** <dd>^(This option takes a single argument of type int. If non-zero, then
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** URI handling is globally enabled. If the parameter is zero, then URI handling
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** is globally disabled. If URI handling is globally enabled, all filenames
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** is globally disabled.)^ ^If URI handling is globally enabled, all filenames
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** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
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** specified as part of [ATTACH] commands are interpreted as URIs, regardless
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** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
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** connection is opened. If it is globally disabled, filenames are
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** connection is opened. ^If it is globally disabled, filenames are
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** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
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** database connection is opened. By default, URI handling is globally
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** database connection is opened. ^(By default, URI handling is globally
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** disabled. The default value may be changed by compiling with the
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** [SQLITE_USE_URI] symbol defined.
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** [SQLITE_USE_URI] symbol defined.)^
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**
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** [[SQLITE_CONFIG_COVERING_INDEX_SCAN]] <dt>SQLITE_CONFIG_COVERING_INDEX_SCAN
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** <dd> This option takes a single integer argument which is interpreted as
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** <dd>^This option takes a single integer argument which is interpreted as
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** a boolean in order to enable or disable the use of covering indices for
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** full table scans in the query optimizer. The default setting is determined
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** full table scans in the query optimizer. ^The default setting is determined
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** by the [SQLITE_ALLOW_COVERING_INDEX_SCAN] compile-time option, or is "on"
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** if that compile-time option is omitted.
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** The ability to disable the use of covering indices for full table scans
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** is because some incorrectly coded legacy applications might malfunction
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** malfunction when the optimization is enabled. Providing the ability to
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** when the optimization is enabled. Providing the ability to
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** disable the optimization allows the older, buggy application code to work
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** without change even with newer versions of SQLite.
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**
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@ -1664,17 +1701,24 @@ struct sqlite3_mem_methods {
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**
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** [[SQLITE_CONFIG_MMAP_SIZE]]
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** <dt>SQLITE_CONFIG_MMAP_SIZE
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** <dd>SQLITE_CONFIG_MMAP_SIZE takes two 64-bit integer (sqlite3_int64) values
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** <dd>^SQLITE_CONFIG_MMAP_SIZE takes two 64-bit integer (sqlite3_int64) values
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** that are the default mmap size limit (the default setting for
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** [PRAGMA mmap_size]) and the maximum allowed mmap size limit.
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** The default setting can be overridden by each database connection using
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** ^The default setting can be overridden by each database connection using
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** either the [PRAGMA mmap_size] command, or by using the
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** [SQLITE_FCNTL_MMAP_SIZE] file control. The maximum allowed mmap size
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** [SQLITE_FCNTL_MMAP_SIZE] file control. ^(The maximum allowed mmap size
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** cannot be changed at run-time. Nor may the maximum allowed mmap size
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** exceed the compile-time maximum mmap size set by the
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** [SQLITE_MAX_MMAP_SIZE] compile-time option.
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** If either argument to this option is negative, then that argument is
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** [SQLITE_MAX_MMAP_SIZE] compile-time option.)^
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** ^If either argument to this option is negative, then that argument is
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** changed to its compile-time default.
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**
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** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
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** <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
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** <dd>^This option is only available if SQLite is compiled for Windows
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** with the [SQLITE_WIN32_MALLOC] pre-processor macro defined.
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** SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
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** that specifies the maximum size of the created heap.
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** </dl>
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*/
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#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
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@ -1699,6 +1743,7 @@ struct sqlite3_mem_methods {
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#define SQLITE_CONFIG_COVERING_INDEX_SCAN 20 /* int */
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#define SQLITE_CONFIG_SQLLOG 21 /* xSqllog, void* */
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#define SQLITE_CONFIG_MMAP_SIZE 22 /* sqlite3_int64, sqlite3_int64 */
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#define SQLITE_CONFIG_WIN32_HEAPSIZE 23 /* int nByte */
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/*
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** CAPI3REF: Database Connection Configuration Options
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@ -1775,19 +1820,21 @@ SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff);
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/*
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** CAPI3REF: Last Insert Rowid
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**
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** ^Each entry in an SQLite table has a unique 64-bit signed
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** ^Each entry in most SQLite tables (except for [WITHOUT ROWID] tables)
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** has a unique 64-bit signed
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** integer key called the [ROWID | "rowid"]. ^The rowid is always available
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** as an undeclared column named ROWID, OID, or _ROWID_ as long as those
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** names are not also used by explicitly declared columns. ^If
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** the table has a column of type [INTEGER PRIMARY KEY] then that column
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** is another alias for the rowid.
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**
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** ^This routine returns the [rowid] of the most recent
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** successful [INSERT] into the database from the [database connection]
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** in the first argument. ^As of SQLite version 3.7.7, this routines
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** records the last insert rowid of both ordinary tables and [virtual tables].
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** ^If no successful [INSERT]s
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** have ever occurred on that database connection, zero is returned.
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** ^The sqlite3_last_insert_rowid(D) interface returns the [rowid] of the
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** most recent successful [INSERT] into a rowid table or [virtual table]
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** on database connection D.
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** ^Inserts into [WITHOUT ROWID] tables are not recorded.
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** ^If no successful [INSERT]s into rowid tables
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** have ever occurred on the database connection D,
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** then sqlite3_last_insert_rowid(D) returns zero.
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**
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** ^(If an [INSERT] occurs within a trigger or within a [virtual table]
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** method, then this routine will return the [rowid] of the inserted
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@ -2353,11 +2400,13 @@ SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
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** applications to access the same PRNG for other purposes.
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**
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** ^A call to this routine stores N bytes of randomness into buffer P.
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** ^If N is less than one, then P can be a NULL pointer.
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**
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** ^The first time this routine is invoked (either internally or by
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** the application) the PRNG is seeded using randomness obtained
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** from the xRandomness method of the default [sqlite3_vfs] object.
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** ^On all subsequent invocations, the pseudo-randomness is generated
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** ^If this routine has not been previously called or if the previous
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** call had N less than one, then the PRNG is seeded using randomness
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** obtained from the xRandomness method of the default [sqlite3_vfs] object.
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** ^If the previous call to this routine had an N of 1 or more then
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** the pseudo-randomness is generated
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** internally and without recourse to the [sqlite3_vfs] xRandomness
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** method.
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*/
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@ -2517,6 +2566,7 @@ SQLITE_API int sqlite3_set_authorizer(
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#define SQLITE_FUNCTION 31 /* NULL Function Name */
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#define SQLITE_SAVEPOINT 32 /* Operation Savepoint Name */
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#define SQLITE_COPY 0 /* No longer used */
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#define SQLITE_RECURSIVE 33 /* NULL NULL */
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/*
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** CAPI3REF: Tracing And Profiling Functions
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@ -3097,7 +3147,6 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);
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** choice of query plan if the parameter is the left-hand side of a [LIKE]
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** or [GLOB] operator or if the parameter is compared to an indexed column
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** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
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** the
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** </li>
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** </ol>
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*/
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@ -3759,19 +3808,19 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
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**
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** <tr><td> NULL <td> INTEGER <td> Result is 0
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** <tr><td> NULL <td> FLOAT <td> Result is 0.0
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** <tr><td> NULL <td> TEXT <td> Result is NULL pointer
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** <tr><td> NULL <td> BLOB <td> Result is NULL pointer
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** <tr><td> NULL <td> TEXT <td> Result is a NULL pointer
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** <tr><td> NULL <td> BLOB <td> Result is a NULL pointer
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** <tr><td> INTEGER <td> FLOAT <td> Convert from integer to float
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** <tr><td> INTEGER <td> TEXT <td> ASCII rendering of the integer
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** <tr><td> INTEGER <td> BLOB <td> Same as INTEGER->TEXT
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** <tr><td> FLOAT <td> INTEGER <td> Convert from float to integer
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** <tr><td> FLOAT <td> INTEGER <td> [CAST] to INTEGER
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** <tr><td> FLOAT <td> TEXT <td> ASCII rendering of the float
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** <tr><td> FLOAT <td> BLOB <td> Same as FLOAT->TEXT
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** <tr><td> TEXT <td> INTEGER <td> Use atoi()
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** <tr><td> TEXT <td> FLOAT <td> Use atof()
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** <tr><td> FLOAT <td> BLOB <td> [CAST] to BLOB
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** <tr><td> TEXT <td> INTEGER <td> [CAST] to INTEGER
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** <tr><td> TEXT <td> FLOAT <td> [CAST] to REAL
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** <tr><td> TEXT <td> BLOB <td> No change
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** <tr><td> BLOB <td> INTEGER <td> Convert to TEXT then use atoi()
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** <tr><td> BLOB <td> FLOAT <td> Convert to TEXT then use atof()
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** <tr><td> BLOB <td> INTEGER <td> [CAST] to INTEGER
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** <tr><td> BLOB <td> FLOAT <td> [CAST] to REAL
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** <tr><td> BLOB <td> TEXT <td> Add a zero terminator if needed
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** </table>
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** </blockquote>)^
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@ -3827,7 +3876,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
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** described above, or until [sqlite3_step()] or [sqlite3_reset()] or
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** [sqlite3_finalize()] is called. ^The memory space used to hold strings
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** and BLOBs is freed automatically. Do <b>not</b> pass the pointers returned
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** [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
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** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
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** [sqlite3_free()].
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**
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** ^(If a memory allocation error occurs during the evaluation of any
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|
|
@ -3936,15 +3985,24 @@ 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. Every SQL function implementation must be able to work
|
||||
** with UTF-8, UTF-16le, or UTF-16be. But some implementations may be
|
||||
** more efficient with one encoding than another. ^An application may
|
||||
** invoke sqlite3_create_function() or sqlite3_create_function16() multiple
|
||||
** times with the same function but with different values of eTextRep.
|
||||
** its parameters. The application should set this parameter to
|
||||
** [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]
|
||||
** otherwise. ^The same SQL function may be registered multiple times using
|
||||
** different preferred text encodings, with different implementations for
|
||||
** each encoding.
|
||||
** ^When multiple implementations of the same function are available, SQLite
|
||||
** will pick the one that involves the least amount of data conversion.
|
||||
** If there is only a single implementation which does not care what text
|
||||
** encoding is used, then the fourth argument should be [SQLITE_ANY].
|
||||
**
|
||||
** ^The fourth parameter may optionally be ORed with [SQLITE_DETERMINISTIC]
|
||||
** to signal that the function will always return the same result given
|
||||
** the same inputs within a single SQL statement. Most SQL functions are
|
||||
** deterministic. The built-in [random()] SQL function is an example of a
|
||||
** function that is not deterministic. The SQLite query planner is able to
|
||||
** perform additional optimizations on deterministic functions, so use
|
||||
** of the [SQLITE_DETERMINISTIC] flag is recommended where possible.
|
||||
**
|
||||
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
|
||||
** function can gain access to this pointer using [sqlite3_user_data()].)^
|
||||
|
|
@ -4030,9 +4088,19 @@ SQLITE_API int sqlite3_create_function_v2(
|
|||
#define SQLITE_UTF16LE 2
|
||||
#define SQLITE_UTF16BE 3
|
||||
#define SQLITE_UTF16 4 /* Use native byte order */
|
||||
#define SQLITE_ANY 5 /* sqlite3_create_function only */
|
||||
#define SQLITE_ANY 5 /* Deprecated */
|
||||
#define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */
|
||||
|
||||
/*
|
||||
** CAPI3REF: Function Flags
|
||||
**
|
||||
** 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()].
|
||||
*/
|
||||
#define SQLITE_DETERMINISTIC 0x800
|
||||
|
||||
/*
|
||||
** CAPI3REF: Deprecated Functions
|
||||
** DEPRECATED
|
||||
|
|
@ -4804,12 +4872,13 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
|
|||
**
|
||||
** ^The sqlite3_update_hook() interface registers a callback function
|
||||
** with the [database connection] identified by the first argument
|
||||
** to be invoked whenever a row is updated, inserted or deleted.
|
||||
** to be invoked whenever a row is updated, inserted or deleted in
|
||||
** a rowid table.
|
||||
** ^Any callback set by a previous call to this function
|
||||
** for the same database connection is overridden.
|
||||
**
|
||||
** ^The second argument is a pointer to the function to invoke when a
|
||||
** row is updated, inserted or deleted.
|
||||
** row is updated, inserted or deleted in a rowid table.
|
||||
** ^The first argument to the callback is a copy of the third argument
|
||||
** to sqlite3_update_hook().
|
||||
** ^The second callback argument is one of [SQLITE_INSERT], [SQLITE_DELETE],
|
||||
|
|
@ -4822,6 +4891,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
|
|||
**
|
||||
** ^(The update hook is not invoked when internal system tables are
|
||||
** modified (i.e. sqlite_master and sqlite_sequence).)^
|
||||
** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified.
|
||||
**
|
||||
** ^In the current implementation, the update hook
|
||||
** is not invoked when duplication rows are deleted because of an
|
||||
|
|
@ -4903,8 +4973,8 @@ SQLITE_API int sqlite3_release_memory(int);
|
|||
**
|
||||
** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
|
||||
** memory as possible from database connection D. Unlike the
|
||||
** [sqlite3_release_memory()] interface, this interface is effect even
|
||||
** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
|
||||
** [sqlite3_release_memory()] interface, this interface is in effect even
|
||||
** when the [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
|
||||
** omitted.
|
||||
**
|
||||
** See also: [sqlite3_release_memory()]
|
||||
|
|
@ -5279,10 +5349,22 @@ struct sqlite3_module {
|
|||
** the correct order to satisfy the ORDER BY clause so that no separate
|
||||
** sorting step is required.
|
||||
**
|
||||
** ^The estimatedCost value is an estimate of the cost of doing the
|
||||
** particular lookup. A full scan of a table with N entries should have
|
||||
** a cost of N. A binary search of a table of N entries should have a
|
||||
** cost of approximately log(N).
|
||||
** ^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)
|
||||
** 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.
|
||||
**
|
||||
** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info
|
||||
** structure for SQLite version 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
|
||||
** therefore only be used if [sqlite3_libversion_number()] returns a
|
||||
** value greater than or equal to 3008002.
|
||||
*/
|
||||
struct sqlite3_index_info {
|
||||
/* Inputs */
|
||||
|
|
@ -5308,6 +5390,8 @@ struct sqlite3_index_info {
|
|||
int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
|
||||
int orderByConsumed; /* True if output is already ordered */
|
||||
double estimatedCost; /* Estimated cost of using this index */
|
||||
/* Fields below are only available in SQLite 3.8.2 and later */
|
||||
sqlite3_int64 estimatedRows; /* Estimated number of rows returned */
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -5511,6 +5595,9 @@ typedef struct sqlite3_blob sqlite3_blob;
|
|||
** interface. Use the [UPDATE] SQL command to change the size of a
|
||||
** blob.
|
||||
**
|
||||
** ^The [sqlite3_blob_open()] interface will fail for a [WITHOUT ROWID]
|
||||
** table. Incremental BLOB I/O is not possible on [WITHOUT ROWID] tables.
|
||||
**
|
||||
** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces
|
||||
** and the built-in [zeroblob] SQL function can be used, if desired,
|
||||
** to create an empty, zero-filled blob in which to read or write using
|
||||
|
|
@ -6034,7 +6121,9 @@ SQLITE_API int sqlite3_test_control(int op, ...);
|
|||
#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
|
||||
#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
|
||||
#define SQLITE_TESTCTRL_EXPLAIN_STMT 19
|
||||
#define SQLITE_TESTCTRL_LAST 19
|
||||
#define SQLITE_TESTCTRL_NEVER_CORRUPT 20
|
||||
#define SQLITE_TESTCTRL_VDBE_COVERAGE 21
|
||||
#define SQLITE_TESTCTRL_LAST 21
|
||||
|
||||
/*
|
||||
** CAPI3REF: SQLite Runtime Status
|
||||
|
|
|
|||
Loading…
Reference in New Issue