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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 descendants of [f2407a40]

2014-09-18
01:21
Fix compiler warnings and change the nullMem structure initializer into a format that MSVC can understand. Closed-Leaf check-in: 163bfae8 user: drh tags: micro-optimizations
2014-09-17
23:37
Performance improvement and slight size reduction to the comparison operators in the VDBE. check-in: 14052a7d user: drh tags: micro-optimizations
19:05
Fix an unintialized variable problem in sqlite3ota.c. check-in: 01268607 user: dan tags: ota-update
16:41
In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn bit is clear. Also reduce the amount of initialization of Mem objects. All for a small size reduction and performance increase. check-in: fdddb477 user: drh tags: micro-optimizations
15:20
Add tests and fixes for "PRAGMA ota_mode". check-in: 39df35c4 user: dan tags: ota-update
14:52
Improved interface to the Mem object handling. Small size reduction and performance increase. check-in: 4e437844 user: drh tags: micro-optimizations
2014-09-16
21:54
Continuing cleanup of memory register memory allocation handling. check-in: 2598aedc user: drh tags: micro-optimizations
20:05
Make sure registers are cleared properly prior to being used to store the result of an OP_Column operator. check-in: 78fb8838 user: drh tags: micro-optimizations
20:02
Clarify the effects of the pager_ota_mode pragma. Add tests and fixes for the same. check-in: decaccc3 user: dan tags: ota-update
18:22
Simplification of the OP_Column logic for the case of rows with overflow. check-in: f7367803 user: drh tags: micro-optimizations
14:55
Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic only as the C-compiler optimizers were already omitting this parameter on amalgamation builds. check-in: a10a6bba user: drh tags: micro-optimizations
14:37
Reduce the number of arguments to RecordCompare functions from 4 to 3, resulting in a small performance increase. check-in: 8239c35a user: drh tags: micro-optimizations
14:16
Reorder the elements of the Mem object for a small size reduction and performance improvement. Moved into a branch because MSVC is unable to handle named structure initializer on nullMem. check-in: 0be3019e user: drh tags: micro-optimizations
13:30
Changes to sqlite3VdbeRecordUnpack() to make it slightly smaller and faster. check-in: 8fb90da7 user: drh tags: trunk
03:24
Performance improvement to the sqlite3MemCompare() routine by factoring out sqlite3BlobCompare(). check-in: 20ed2321 user: drh tags: trunk
2014-09-15
19:34
Remove the experimental sqlite3_transaction_save() and restore() APIs. check-in: 48d201cd user: dan tags: ota-update
16:57
Merge latest trunk fixes into this branch. check-in: 5efafef5 user: dan tags: ota-update
16:53
Fix tool/showwal.c so that it handles WAL files that contain 64KiB pages. check-in: 4060efb6 user: dan tags: trunk
16:50
Avoid attempting to call the xFetch() method of an sqlite3_io_methods object with a version number less than 3. check-in: dedaa6fb user: dan tags: trunk
15:34
Merge latest trunk changes with this branch. check-in: 55b8011d user: dan tags: ota-update
15:22
Have sqlite3ota.c use grave accents instead of double-quotes to enclose identifiers in generated SQL. To avoid having the SQL engine substitute a literal string if a column reference cannot be resolved. check-in: 79f24184 user: dan tags: ota-update
14:59
Remove the EXPENSIVE_ASSERTS in pcache.c having to do with the pSynced field of the Pcache object, as they are incorrect, as revealed by recent pcache enhancements. check-in: 69a64560 user: drh tags: trunk
14:54
Ensure the correct collation sequences are used when sorting data in sqlite3ota.c. check-in: 473a72d7 user: dan tags: ota-update
14:46
Do not flatten aggregate subqueries that contain min() or max() functions so that if the min()/max() are discarded by the outer query, they still function and cause non-aggregate expression to be evaluated on the minimal or maximal row. check-in: 0bdf1a08 user: drh tags: trunk
12:18
Have the sqlite3_index_writer() VMs check that the final values of records inserted into indexes on rowid tables are integers. check-in: cca376bf user: dan tags: ota-update
11:14
Adjust comments to show that subquery flattening restriction (10) was removed from the code back in 2005. This is a comment change only. check-in: 4ff0eb96 user: drh tags: trunk
10:44
Add OP_Affinity opcodes to the VMs generated by sqlite3_index_writer(). check-in: b9b38cb8 user: dan tags: ota-update
2014-09-12
20:30
Small performance improvement to the dirty list handling in the pager. check-in: b332a84d user: drh tags: trunk
17:41
Simplify the way the column cache is managed around OP_Move instructions. check-in: 32055623 user: drh tags: trunk
04:28
Fix a problem with parser memory allocation on 32-bit systems. check-in: 2f69a1fa user: drh tags: trunk
2014-09-11
23:34
Fix an issue with sqlite3_bind_text64() with the SQLITE_UTF16 encoding parameter. Remove some unreachable code from the text64() and blob64() implementation. check-in: 34292b08 user: drh tags: trunk
18:44
Add new APIs that take 64-bit length parameters: sqlite3_malloc64(), sqlite3_realloc64(), sqlite3_bind_blob64(), sqlite3_bind_text64(), sqlite3_result_blob64(), and sqlite3_result_text64(). Add the sqlite3_msize() interface. Internal memory allocation routines now use 64-bit unsigned length parameters for safety. Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a integer overflow problem. check-in: 7e4978c0 user: drh tags: trunk
17:27
Add the SQLITE_USER_AUTHENTICATION extension to the trunk. This extension is disabled by default. Special compilation procedures are need to enable it. check-in: 65884d4f user: drh tags: trunk
17:14
Clean up some #includes in the extension API implementation. Closed-Leaf check-in: b149ef5c user: drh tags: user-auth
16:36
Suppress the potential schema error that occurs when a non-user-auth SQLite library tries to parse the sqlite_user table definition in a user-auth database. check-in: cda33c1e user: drh tags: user-auth
16:19
Enhance the sqlite3_user_add() interface to initialize the user authentication logic. Add test cases for the extra argument on the end of the authorizer callback. check-in: 842c6da8 user: drh tags: user-auth
15:25
All interfaces working and tested. check-in: 96ea5c0b user: drh tags: user-auth
14:56
Get the sqlite3_user_delete() interface working. check-in: 974a9c65 user: drh tags: user-auth
14:40
Fix the sqlite3_user_change() interface so that it does allow a non-admin user to change their own password. check-in: 52d440c7 user: drh tags: user-auth
14:01
Move user authentication blocking from sqlite3_prepare() over to the table lock generator, thus allowing SQL statements (like "PRAGMA locking_mode") that do not touch database content to run prior to authentication. check-in: 70121e7c user: drh tags: user-auth
13:44
Add support for the extra parameter on the sqlite3_set_authorizer() callback and support for failing an ATTACH with an authentication-required database using bad credentials. The extension is now feature complete, but much testing and bug-fixing remains. check-in: 596e728b user: drh tags: user-auth
00:27
Reorder parameters on the sqlite3_user_*() interfaces for consistency. Add the first TCL test cases. check-in: 2f6d8f32 user: drh tags: user-auth
2014-09-10
22:46
Complete the implementation of the various APIs. Fix several problems. This is another incremental check-in that does not completely work. check-in: 4eaaa7fa user: drh tags: user-auth
19:01
Add the ".user" shell command and implement the sqlite3_user_add() routine. Incremental check-in. The code compiles but does not work. check-in: a0455f9d user: drh tags: user-auth
17:34
Further ideas on user authentication. Not yet working code. check-in: c8171ecd user: drh tags: user-auth
2014-09-09
20:30
Change the name of the _texte64() interfaces to just _test64(), without the "e". Closed-Leaf check-in: 6ab76c5f user: drh tags: 64-bit-lengths
18:41
Add new interfaces to the loadable extension mechanism. check-in: 18d80cbc user: drh tags: 64-bit-lengths
17:27
Add new APIs that take 64-bit length parameters: sqlite3_malloc64(), sqlite3_realloc64(), sqlite3_bind_blob64(), sqlite3_bind_texte64(), sqlite3_result_blob64(), and sqlite3_result_texte64(). Internal memory allocation routines also now use 64-bit unsigned length parameters for safety. Also add the sqlite3_msize() interface. Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a integer overflow problem. check-in: 94954850 user: drh tags: 64-bit-lengths
14:47
Non-working preliminary implementation attempts on user authentication. check-in: 8440f093 user: drh tags: user-auth
2014-09-08
17:50
Add support for update statements to sqlite3ota.c. check-in: e109b27e user: dan tags: ota-update
15:04
Merge support for large files on Android from trunk. check-in: c2885c6b user: drh tags: sessions
2014-09-06
20:19
Add support for delete operations to the ota extension. check-in: f988234b user: dan tags: ota-update
17:06
Fixes to os_unix.c to support database (and other) files larger than 2GiB on Android. check-in: ad7063aa user: dan tags: trunk
16:52
Merge latest trunk changes with this branch. Closed-Leaf check-in: 9dca7ce5 user: dan tags: android-large-filles
16:49
Fixes to os_unix.c to support database (and other) files larger than 2GiB. check-in: e7fae33c user: dan tags: android-large-filles
16:39
Fix typos in comments. No code changes. check-in: e62aab5e user: peter.d.reid tags: trunk
03:38
Do not record a page-size change if the attempt to change the page size failed due to an OOM error. check-in: 4d4fb197 user: drh tags: trunk
03:16
Add the sqlite3_memdebug_title_count global variable, used during debugging to count the number of invocations of test_memdebug_settitle. By examining this variable in the debugger after a segfault, one can then set a breakpoint on test_memdebug_settitle that will fire just before the problem. check-in: 27e3ca3e user: drh tags: trunk
02:00
Fix a couple of typos in comments. No changes to code. check-in: a758465e user: mistachkin tags: trunk
01:35
Query planner heuristic update: When doing a full table scan on a table that has an equality constraint on an unindexed column, do not allow the estimated number of output rows to be greater than half the total number of rows in the table. check-in: 73954f93 user: drh tags: trunk
2014-09-05
19:52
Switch back to using a single database connection in sqlite3ota.c. check-in: 3c2f4a07 user: dan tags: ota-update
19:31
Reorganize the code in sqlite3ota.c in preparation for adding support for update and delete operations. check-in: 98387f05 user: dan tags: ota-update
05:58
Fix harmless compiler warning. check-in: 73311906 user: mistachkin tags: trunk
2014-09-04
19:05
Avoid ever running a checkpoint in ota mode. check-in: 9ae44447 user: dan tags: ota-update
18:05
Fix showwal.c so that it works with 64KiB pages. check-in: fc4f7c11 user: dan tags: ota-update
11:03
Avoid calling sqlite3OsFetch() on a file-handle for which the xFetch method is NULL. check-in: 071f7f2d user: dan tags: ota-update
2014-09-03
19:30
Split part of "PRAGMA ota_mode" off into "PRAGMA pager_ota_mode". This allows some specialized custom VFS implementations to intercept and implement the expected pager-related effects of this pragma. check-in: 209f672e user: dan tags: ota-update
08:25
Add a command line program that uses the extension. This serves as example code and is also useful for performance testing. check-in: ffa1524e user: dan tags: ota-update
2014-09-02
19:59
Add an experimental extension for applying bulk updates to databases. check-in: 2954ab50 user: dan tags: ota-update
15:57
Merge the latest trunk changes into the apple-osx branch. check-in: 696dc935 user: drh tags: apple-osx
15:49
Merge the latest trunk changes, including the multi-threaded sorter, into the sessions branch. check-in: d4cce2c7 user: drh tags: sessions
2014-09-01
23:06
Update comments in the ANALYZE command that describe how the Stat4Accum objecct is passed around within the VDBE. No changes to functional code. check-in: 9779c7a9 user: drh tags: trunk
22:34
Avoid a confusing (though correct) argument to the sqlite3_result_blob() function in the implementation of ANALYZE. check-in: 4cae93f8 user: drh tags: trunk
19:29
For sqlite3_win32_is_nt(), assume WinRT is NT-based and revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. check-in: be0a0372 user: mistachkin tags: trunk
18:21
Tweak the documentation for SQLITE_LIMIT_WORKER_THREADS. No changes to executable code. check-in: 672e7387 user: drh tags: trunk
17:36
Add support for using separate worker threads to speed large sorts. The SQLITE_MAX_WORKER_THREADS and SQLITE_DEFAULT_WORKER_THREADS compile-time options and the SQLITE_LIMIT_WORKER_THREADS argument to sqlite3_limit() and the "PRAGMA threads=N" pragma are added. check-in: b1c0f0bc user: drh tags: trunk
2014-08-29
19:06
Disable worker threads when SQLITE_THREADSAFE=0. Set the default compile-time maximum number of worker threads to 8 and honor the SQLITE_DEFAULT_WORKER_THREADS compile-time constant (which defaults to 0). Closed-Leaf check-in: 33fa0410 user: drh tags: threads
18:06
Fix the speedtest1.c test program to set the worker thread count using the threads pragma. check-in: 2ab4b5ad user: drh tags: threads
16:20
Add SQLITE_LIMIT_WORKER_THREADS for controlling the maximum number of worker threads. check-in: 1b598c68 user: drh tags: threads
14:40
Merge recent performance enhancements from trunk onto the threads branch. check-in: 35c44a3c user: drh tags: threads
2014-08-25
23:44
Remove the SQLITE_CONFIG_WORKER_THREADS configuration parameter. The number of worker threads in the sorter is now determined only by the PRAGMA threads=N setting. check-in: e3305d4b user: drh tags: threads
22:43
Merge the CAST operator enhancements from trunk. check-in: 6c8f86e4 user: drh tags: threads
15:13
Query or change the maximum number of worker threads allowed on each database connection separately using the "PRAGMA threads" command. check-in: 29c5e8a7 user: drh tags: threads
13:27
Merge the recent performance enhancements implemented on trunk into the threads branch. check-in: dfdc900f user: drh tags: threads
2014-08-15
15:46
Merge the 3.8.6 release into the threads branch. check-in: 05807c41 user: drh tags: threads
2014-08-14
14:02
Merge the pre-3.8.6 changes into the threads branch. check-in: a608fd1d user: drh tags: threads
2014-08-06
02:03
Merge all recent changes from trunk. check-in: a353a851 user: drh tags: threads
2014-07-30
18:47
Add a new sqlite3FaultSim() call to vdbePmaReaderSeek() to facilitate tests of error handling in the sorter. check-in: 655d8cfc user: drh tags: threads
17:21
Mark some invariants in the vdbesort.c logic when SQLITE_MAX_WORKER_THREADS==0. check-in: 721cd965 user: drh tags: threads
14:44
Merge recent trunk changes, and especially the fix for the CREATE UNIQUE INDEX problem of ticket [9a6daf340df99ba9]. check-in: 5b50a838 user: drh tags: threads
2014-07-29
21:44
Disable an assert that is sometimes generated spuriously. check-in: bd9ee0ea user: mistachkin tags: threads
19:00
Update return value checking to conform to the beginthreadex() specs. check-in: 3144a16f user: mistachkin tags: threads
18:53
Add a couple more assert statements. check-in: 4e816db2 user: mistachkin tags: threads
18:46
Fix unreachable branches in the threads.c module. check-in: 3175e366 user: drh tags: threads
17:22
Fix a harmless compiler warning. check-in: 216d21d0 user: drh tags: threads
16:37
Make the Win32 thread handles are available after the threads exit. check-in: 565c5af7 user: mistachkin tags: threads
15:18
Fix the threads build on Windows when SQLITE_MAX_WORKER_THREADS is greater than 0. check-in: f37db3a0 user: drh tags: threads
14:16
Merge the R-Tree fix and the new SQLITE_TESTCTRL_ISINIT test control from trunk. check-in: b2f7eb3c user: drh tags: threads
00:42
Add some asserts to the Win32 mutex subsystem. check-in: e8f2dc5f user: mistachkin tags: threads
00:23
Fix the build on windows. check-in: 2773a5f9 user: drh tags: threads
2014-07-28
20:16
Remove an unnecessary parameter from vdbeMergeEngineStep(). Rename a couple other routines to be more descriptive of what they do. check-in: f2407a40 user: drh tags: threads