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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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100 check-ins occurring around 824c8dd3015bbd5c.

2011-01-22
00:10
Add the ability to use indices for constraints of the form "x IS NOT NULL" when sqlite_stat2 is available and most entries for column x are NULL. check-in: 5d5bddd2 user: drh tags: stat2-enhancement
2011-01-21
18:25
Change sqlite3StrAccumAppend() to use realloc instead of malloc. check-in: 380f61df user: dan tags: trunk
18:18
Adjustments to the result row estimator for the IN operator so that it gives the same estimates as the equivalent OR operator. Test cases for the same. check-in: c82cb9c0 user: drh tags: stat2-enhancement
16:27
Make use of histogram data to make better estimates for the number of rows that will be returned from "x IN (v1,v2,v3,...)" constraints. check-in: fd3977a2 user: drh tags: stat2-enhancement
15:52
Add options to test command [do_faultsim_test] to support testing VFS implementations. check-in: 503ad889 user: dan tags: trunk
14:37
Add the ability to use indices when a range contraint is bounded on the lower end by NULL. check-in: f73a167b user: drh tags: stat2-enhancement
2011-01-20
20:36
Update ANALYZE test cases to check out the use of histograms for equality constraints. check-in: c7b59afa user: drh tags: stat2-enhancement
16:52
Use histogram data to improve the row-count estimates on equality constraints. check-in: 6bfc5c69 user: drh tags: stat2-enhancement
02:56
The first of a planned series of enhancements to the query planner that enable it to make better use of sqlite_stat2 histograms when the table has many repeated values. check-in: 2cd374cd user: drh tags: stat2-enhancement
2011-01-19
21:58
Comment improvements in pcache1.c. No changes to code. check-in: 9660a0a2 user: drh tags: trunk
2011-01-18
17:34
Pull over all the latest trunk changes. check-in: ca86d04b user: drh tags: wal-trace-375
17:03
Do not use mutexes in the pcache implementation unless SQLITE_ENABLE_MEMORY_MANAGMENT is defined. This is a performance enhancement. A side effect is that pcaches will not steal pages from one another unless ENABLE_MEMORY_MANAGEMENT is set, or unless SQLITE_THREADSAFE=0. check-in: e5ca59e6 user: drh tags: trunk
16:13
Get all test cases working with the mutex-free-pcache implementation. Closed-Leaf check-in: 2dc98d29 user: drh tags: mutex-free-pcache
15:17
Do not use SQLITE_MUTEX_STATIC_MEM2 since it has been reused as STATIC_OPEN. Instead, create a new static mutex STATIC_PMEM which is an alias for the unused STATIC_LRU2. check-in: f1cf02ef user: drh tags: mutex-free-pcache
2011-01-17
21:32
Here is a completely new implementation of the mutex-free-pcache. This one uses a common code base and automatically selects whether or not to use mutexes depending on compile-time and start-time options. check-in: d094a1bf user: drh tags: mutex-free-pcache
18:30
Fix a typo in the documentation for sqlite3_stmt_readonly(). check-in: 56417a33 user: drh tags: trunk
17:42
Add the SQLITE_OMIT_AUTORESET compile-time option which if enabled causes the sqlite3_step() routine to return SQLITE_MISUSE if it is called after it has previously returned anything other than SQLITE_ROW, SQLITE_BUSY, or SQLITE_LOCKED. check-in: 053ce76d user: drh tags: trunk
02:24
Add back an ALWAYS() to regain full test coverage. check-in: b93f6f3e user: drh tags: trunk
2011-01-16
22:37
On a backup from a smaller to a larger page size, do not begin committing the transaction until the source pages after the pending byte have been copied. check-in: 612e2599 user: drh tags: trunk
00:56
Make sure the change-counter and SQLite-version fields of the header are set correctly even when doing a VACUUM with locking_mode=EXCLUSIVE. Ticket [5d863f876ee9561b]. check-in: 04fa1e16 user: drh tags: trunk
2011-01-15
21:42
Make sure the change counter and SQLite version numbers in the header are set correctly, even when running in WAL mode and when VACUUMing in WAL mode. Ticket [5d863f876ee9561b9]. check-in: 0be92a75 user: drh tags: trunk
18:11
Fix the change-counter increment for WAL pages so that it works even when invoked from xStress. Ticket [5d863f876ee9561b95e2]. Closed-Leaf check-in: 228e7c34 user: drh tags: bug-5d863f87
17:12
Increment the change counter and update the SQLite version number whenever page 1 is added to the WAL. Ticket [5d863f876ee9561b9] check-in: c1e0d09c user: drh tags: bug-5d863f87
16:52
Add a test case demonstrating the problem described by ticket [5d863f876e]. check-in: af54963f user: dan tags: trunk
2011-01-14
16:43
Rerun autoconf to bring the configure script up-to-date. check-in: 14217464 user: drh tags: trunk
16:12
Provide an alternative and experimental pcache implementation that avoids the use of mutexes at the expense of using more memory. Closed-Leaf check-in: 2ea5bd12 user: drh tags: mutex-free-pcache
15:17
Fix comments, including some documentation comments, in the page cache logic. No code changes. check-in: c80e9c1a user: drh tags: trunk
11:51
Fix a bug in test code (test_vfs.c). check-in: 772a3845 user: dan tags: trunk
2011-01-13
16:10
Fix a typo on the sqlite3_open_v2() documentation. check-in: b0add45a user: drh tags: trunk
11:20
Fix a couple of crashes in fts3 that can occur if the database contents are inconsistent. check-in: 811e12cd user: dan tags: trunk
10:58
Fix a segfault that can occur in matchinfo if an fts4 table contains mostly zero-length documents. Specifically, if the table contains more rows than it does bytes of text. check-in: fe904766 user: dan tags: trunk
2011-01-12
17:56
Do not raise an SQLITE_CORRUPT error in Recoverymode if the database size in the header is larger than the physical file size. This facilitates recovery of a database in which the database size field has been corrupted. check-in: 114640d9 user: drh tags: trunk
2011-01-11
17:40
Merge accidentally created fork. check-in: b7d080b8 user: dan tags: trunk
17:39
Add the SQLITE_FCNTL_SYNC file-control. check-in: b3f2f465 user: dan tags: trunk
17:38
Change the page size of the destination database in a backup, if it is changeable, prior to starting the backup. check-in: a5e4e0ca user: drh tags: trunk
16:09
If a rollback is attempted in journal_mode=off mode, force SQLite to discard the contents of the pager cache before processing any subsequent queries. check-in: ece7efce user: dan tags: trunk
12:46
Fix the sqlite3.h generator script so that it generates the correct SQLITE_SOURCE_ID string with the latest versions of Fossil that include fractional seconds on the date/time stamp. check-in: 3513bf6e user: drh tags: trunk
01:42
A proposed change to the sqlite3_step() API such that it will only auto-reset following an SQLITE_BUSY or SQLITE_LOCKED error. Calls after any other result other than SQLITE_ROW will return SQLITE_MISUSE. Closed-Leaf check-in: d1b3c54f user: drh tags: step-autoreset
2011-01-10
21:01
Update pager requirements to account for the ZIPVFS extension. check-in: d94e59b5 user: drh tags: trunk
2011-01-07
02:50
Reorder the fields in private structures in an effort to reduce alignment gaps and thus make the structures smaller, and to put frequently accessed fields first. Also update some obsolete comments. Valgrind shows a very slight performance improvement. check-in: 378a1d13 user: drh tags: trunk
2011-01-06
15:51
Enhance the showdb tool to show overflow page pointers at the end of overflow cells. check-in: cda5eab1 user: drh tags: trunk
01:26
Enhance the showdb tool to show a btree page layout. Add limit checks so that overflow content does not overflow the buffer. check-in: 57ffa07e user: drh tags: trunk
2011-01-05
21:46
Fix a bug in the showdb utility: the serial types for BLOB and TEXT where reversed. check-in: 65a13faf user: drh tags: trunk
21:20
Enhancements to the "showdb" debugging tool. Add the ability to display the content of a cell. check-in: e9023a4e user: drh tags: trunk
13:43
Increment the version number to 3.7.5. check-in: 9ec3896e user: drh tags: trunk
13:07
Cherrypick the WAL error logging from the pre-3.7.5 line into a branch for version 3.7.2. Include the sqlite3_vsnprintf() interface. This checkin is intended for debugging and not for release. Leaf check-in: 6549e767 user: drh tags: wal-trace-372
12:50
Add detailed error logging to WAL in an effort to track down an obscure SQLITE_PROTOCOL problem. This code is intended for debugging and not for release. check-in: 2c2afdd0 user: drh tags: wal-trace-375
12:20
Add the sqlite3_vsnprintf() interface. check-in: fc67adea user: drh tags: trunk
2011-01-04
20:06
Fix a null-pointer dereference that can occur on an OOM error while running ANALYZE with SQLITE_ENABLE_STAT2. check-in: 73128d4e user: drh tags: trunk
19:01
Fix the ANALYZE command so that it takes collating sequences into account when gathering index statistics. check-in: a5867cfc user: drh tags: trunk
17:57
The ANALYZE command now counts at all rows of an index, even those containing NULL values. A valid sqlite_stat1 entry is created even if the index contains nothing but NULLs. check-in: 824c8dd3 user: drh tags: trunk
2010-12-29
18:24
Have testfixture invoke C routine Zipvfs_Init() when creating a new interpreter if SQLITE_ENABLE_ZIPVFS is defined. check-in: 430635da user: dan tags: trunk
10:49
Fix some off-by-one errors in the comments for API functions create_function() and value_blob(). No changes to code or tests. check-in: 7ded90ba user: dan tags: trunk
2010-12-24
15:49
Reduce the number of calls to sqlite3_realloc() made by fts3 when querying for position information of a term prefix. check-in: 7088d945 user: dan tags: trunk
2010-12-22
21:48
Do not include <sys/mmap.h> if SQLITE_OMIT_WAL is defined. check-in: b82e85ec user: drh tags: trunk
2010-12-21
21:28
Add test cases for the new lookaside hit and miss status outputs. Add the output of lookaside hit and miss to the command-line shell statistics. check-in: b0888047 user: drh tags: trunk
20:36
Merge into the trunk the experimental enhancements to sqlite3_db_status() for measuring lookaside memory allocator performance. check-in: 8c3b06c2 user: drh tags: trunk
00:20
Remove the obsolete compile-time option SQLITE_THREAD_OVERRIDE_LOCK from the autoconf makefile. Needed only for LinuxThreads, which we no longer support. check-in: 09f6c053 user: drh tags: trunk
00:16
Rearrange a variable declaration in the proxy locking code to avoid a harmless compiler warning on recent MacOS versions. check-in: 39bbd355 user: drh tags: trunk
2010-12-20
17:00
Clarify the documentation of the SQLITE_STATUS_MALLOC_COUNT parameter to sqlite3_status(). check-in: 3b41bcc3 user: drh tags: trunk
15:51
Add additional DBSTATUS options for measuring the hit and miss rates against the lookaside memory pool - information useful in tuning the lookaside size. Currently experimental pending analysis of performance impact. Closed-Leaf check-in: 34613f1d user: drh tags: experimental
2010-12-17
14:03
Add the "-heap" option to the command-line shell - to allocate a fixed heap for use with SQLITE_ENABLE_MEMSYS5. check-in: 74fff692 user: drh tags: trunk
01:00
Fix minor typos in the sqlite3_backup documentation. check-in: df430be5 user: drh tags: trunk
2010-12-16
20:35
Improvements to the documentation for sqlite3_backup. No code changes. check-in: f83609f4 user: drh tags: trunk
19:52
Fix an assertion fault that can only occur if SQLITE_ENABLE_STAT2 is defined and the constant folding optimization is disabled using sqlite3_test_control(). Problem introduced by [ad8bc68197f2b4] but we missed it prior to the 3.7.4 release due to taking shortcuts and skipping tests in the release checklist. check-in: 70a3d817 user: drh tags: trunk
02:06
Make wal_checkpoint a no-op if a prior checkpoint has already copied all WAL content into the database. This prevents a concurrent write to the database from resetting the wal-index out from under the WalIterator of the checkpoint as it is initializing. check-in: cf86affc user: drh tags: trunk
2010-12-15
21:02
Enhanced comments in wal.c and declare some procedure parameters "const". No changes to the generated code. check-in: d0e4375b user: drh tags: trunk
18:54
When registering the built-in LIKE and GLOB functions, make sure that they are tagged with SQLITE_UTF8 so that if other application-defined LIKE and GLOB implementations are provided for UTF16, then the appropriate function will be selected. check-in: e1660764 user: drh tags: trunk
2010-12-10
17:06
Fix a performance regression in matchinfo(). check-in: fa37d8eb user: dan tags: trunk
2010-12-09
19:15
Add support for the SQLITE_DEFAULT_FOREIGN_KEYS compile-time option. check-in: c959945a user: drh tags: trunk
18:55
Mention the SQLITE_DEFAULT_WAL_AUTOCHECKPOINT compile-time option in the documentation for the sqlite3_wal_autocheckpoint() interface. check-in: 5a52dd59 user: drh tags: trunk
2010-12-08
18:30
Update the sqlite3_stmt_readonly() interface so that its output is well-defined for all prepared statements, and so that it gives the correct result for VACUUM. check-in: 9c19b7ae user: drh tags: trunk
03:28
The command-line shell ignore errors in sqlite3_close() when shutting down. check-in: 925332c3 user: drh tags: trunk
00:02
Changes to the shell which should, in theory, allow it to work with libeditline as an alternative to libreadline. check-in: e474fd9e user: drh tags: trunk
2010-12-07
23:24
Improved documentation for SQLITE_FCNTL_FILE_POINTER. check-in: 43935548 user: drh tags: trunk
20:14
Version 3.7.4 check-in: a586a4de user: drh tags: trunk, release, version-3.7.4
17:12
Work around restriction in Windows file locking. check-in: fe441df9 user: shaneh tags: trunk
16:39
Fix a bug in the demo "superlock" code preventing locks from being released in some circumstances. check-in: 65c39379 user: dan tags: trunk
15:49
Merge in all changes to the trunk through version 3.7.4rc3. check-in: d2ccf7fc user: drh tags: apple-osx
14:59
Version 3.7.4 release candidate 3 check-in: 11c74c0d user: drh tags: trunk
14:32
Run some of the existing test scripts with optimizations disabled as part of all.test. check-in: b0634d2f user: dan tags: trunk
07:57
Add tests to tkt-80ba201079.test. check-in: c370338c user: dan tags: trunk
2010-12-06
21:09
Fix the build so that it once again works with SQLITE_OMIT_SHARED_CACHE and SQLITE_OMIT_AUTOVACUUM. check-in: fabcb6b9 user: drh tags: trunk
21:06
Add the ability to disable constant factoring using sqlite3_test_control(). Add a TCL interface to this new capability and add tests cases to the TCL test scripts to actually use the new capability. check-in: ad8bc681 user: drh tags: trunk
18:59
Back out part of the previous change that was not really necessary in order to fix [80ba201079ea60], and which in fact serves no useful purpose. check-in: fa9eef86 user: drh tags: trunk
18:50
Initialize all constants at the very beginning of a prepared statement. Do not allow constant initialization to occur once control flow has a chance to diverge, to avoid the possibility of having uninitialized registers. Ticket [80ba201079ea60807]. check-in: c5c53152 user: drh tags: trunk
17:11
Have sqlite3_blob_bytes() return 0 following a failed call to sqlite3_reopen_blob(). check-in: 476a8b49 user: dan tags: trunk
2010-12-04
19:35
Version 3.7.4 release candidate 2. check-in: 40756fe1 user: drh tags: trunk
18:20
Fix a memory leak in fts3 that can occur in an OOM condition. check-in: 507027b7 user: dan tags: trunk
2010-12-03
18:57
Remove an over-zealous call to memAboutToChange() from OP_MustBeInt. OP_MustBeInt will never invalidate the Mem.z pointer so the memAboutToChange() call is not necessary. check-in: 841cf7a7 user: drh tags: trunk
15:41
Version 3.7.4 release candidate 1 check-in: 2e800cb8 user: drh tags: trunk
15:04
Add tests for fts3 to backcompat.test. check-in: b4eafde8 user: dan tags: trunk
10:32
Add the "valgrind" permutation. This is the same as veryquick.test except that it omits the multi-process tests that do not work under valgrind. No changes to production or existing test code. check-in: 49531300 user: dan tags: trunk
2010-12-02
17:39
Fix a bug causing fts3 to incorrectly return SQLITE_CORRUPT. check-in: 099195b1 user: dan tags: trunk
14:47
Exclude a test case from the inmemory_journal permutation of multiplex.test. check-in: 474196d6 user: dan tags: trunk
11:24
Fix a (harmless) valgrind warning in the rtree extension. check-in: a94b9a39 user: dan tags: trunk
06:08
Update misc7.test to account for EQP changes. check-in: 917af565 user: dan tags: trunk
2010-12-01
23:42
Changed multiplex shim's xFilesize to return an error on mismatched chunk size. Added test of same. check-in: 6818c6e4 user: shaneh tags: trunk
22:08
Make sure a test of multiplex shim doesn't fail if a file already exists. check-in: 80de240a user: shaneh tags: trunk
20:49
Added TCL test case for converting to WAL mode with multiple connections. Added exception to the test case for Windows for not being able to delete the open journal file. check-in: 7061601f user: shaneh tags: trunk