This Day In History For 2020-06-06
2 Years Ago (more context)
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2018-06-06
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| 23:31 | Change a comma into a logically equivalent but semantically clearer semicolon. (check-in: 71f97f0f user: drh tags: trunk) | |
| 20:55 | More space and performance enhancements to sqlite3VdbeRecordCompare(). (check-in: 83a60ff0 user: drh tags: trunk) | |
| 20:51 | Add implementation of nth_value() window function. (check-in: eb1fb420 user: dan tags: exp-window-functions) | |
| 20:29 | Small performance optimization in sqlite3VdbeRecordCompareWithSkip() for the common case where the comparison is equal. (check-in: 1e616e25 user: drh tags: trunk) | |
| 19:48 | Rearrange the order of some checks in the integrity_check pragma for a very slight performance gain. (check-in: 4b853f02 user: drh tags: trunk) | |
| 18:50 | Fix the sqlite3BeginTrans() calls within the snapshot extension. (check-in: 1fef7ad2 user: drh tags: trunk) | |
| 17:45 | Another minor optimization to OP_Transaction. (check-in: d80077ae user: drh tags: trunk) | |
| 17:12 | Merge the 3.24.0 changes plus a few subsequent enhancements. (check-in: be7004a9 user: drh tags: begin-concurrent-pnu) | |
| 17:03 | Merge changes from trunk, including all the 3.24.0 changes plus some later enhancements. (check-in: d7299bfe user: drh tags: begin-concurrent) | |
| 16:28 | Change sqlite3BtreeBeginTrans() to return the BTREE_SCHEMA_COOKIE, for a small speed improvement when starting new transactions. (check-in: a10662aa user: drh tags: trunk) | |
| 01:18 | Fix the ".archive" command in the CLI (and the corresponding -A command-line option) so that it silently ignores filenames that contain "../" in their names. This prevents the "Zip Slip" attack. (check-in: 27291f2d user: drh tags: trunk) | |
| 00:36 | Attempt to optimize the resolveExprStep() routine by mapping Expr opcodes into a subset of opcodes that resolveExprStep() cares about and only calling the routine when those opcodes are encountered. Is slightly faster, but it seems like the very slight performance bump is not worth the added complexity. Saved on a dead-end branch for historical reference. (Closed-Leaf check-in: bad4d7a0 user: drh tags: dead-end) | |
3 Years Ago (more context)
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2017-06-06
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| 18:22 | Add the SQLITE_DEFAULT_ROWEST compile-time option for changing the estimated number of rows in tables that lack sqlite_stat1 entries. (check-in: 802b82f3 user: drh tags: branch-3.8.9) | |
| 18:20 | Add the SQLITE_DEFAULT_ROWEST compile-time option for changing the estimated number of rows in tables that lack sqlite_stat1 entries. (check-in: 234ede26 user: drh tags: trunk) | |
| 16:14 | Fix a threading problem in lsm test code. (check-in: 501238b9 user: dan tags: lsm-vtab) | |
4 Years Ago (more context)
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2016-06-06
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| 20:36 | In winFullPathname, translate '/X:' to 'X:' before doing anything else. (check-in: e404ad70 user: mistachkin tags: trunk) | |
| 20:27 | Translate filenames of the form "/c:/*" into just "c:/*" on WinRT and Cygwin. (SQLite has long done this for Win32/WinNT.) (check-in: f8470ffc user: drh tags: trunk) | |
| 18:17 | Fix lempar.c so that the shift-reduce optimization works for error processing. This is a Lemon issue only and has no impact on SQLite. (check-in: 3665a2f5 user: drh tags: trunk) | |
| 13:24 | Initialize the yyerrcnt variable in the lemon parser template. This has no effect on SQLite itself. (check-in: 45531654 user: drh tags: trunk) | |
| 01:54 | Small performance boost and size decrease in sqlite3BtreeMovetoUnpacked(). (check-in: e106a77d user: drh tags: trunk) | |
| 01:48 | Small performance improvement in the LIKE function. (check-in: 5fb0c354 user: drh tags: trunk) | |
| 01:14 | Btree interface refactoring: (1) The sqlite3BtreeKeySize() interface is renamed to sqlite3BtreeIntegerKey() and modified to work only for table btrees with a rowid. (2) The sqlite3BtreeDataSize() interface is renamed to sqlite3BtreePayloadSize() and modified to work with any btree. (3) The sqlite3BtreeDataFetch() and sqlite3BtreeKeyFetch() routines are combined into a single sqlite3BtreePayloadFetch() routine. The result of these changes is a smaller binary and fewer CPU cycles needed to run queries. (check-in: 2d831074 user: drh tags: trunk) | |
5 Years Ago (more context)
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2015-06-06
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| 20:12 | Split out the bulk of the actual VDBE code generation logic from where.c into a new file, leaving behind the analysis logic. This makes the original where.c smaller and hopefully easier to edit. (check-in: faa0e420 user: drh tags: view-optimization) | |
| 19:23 | Fix a comment in fts5.h. (check-in: e964b587 user: dan tags: fts5) | |
| 18:30 | Code simplifications in select.c and where.c. (check-in: 4f20ac90 user: drh tags: view-optimization) | |
| 16:28 | Fix handling of fts5 rowid constraints in the absence of a MATCH clause. Add tests to cover recently added branches. (check-in: 3a9cb648 user: dan tags: fts5) | |
| 00:18 | Minor cleanup of the sqlite3Select() procedure. (check-in: f4c90d06 user: drh tags: view-optimization) | |
15 Years Ago (more context)
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2005-06-06
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| 21:19 | Reference count Table structures so that they are not deallocated too soon. Ticket #1210. (CVS 2498) (check-in: e73d25c7 user: drh tags: trunk) | |
| 17:54 | Return SQLITE_MISUSE when passing a NULL pointer into sqlite3_bind routines. Ticket #1219. (CVS 2497) (check-in: 12c32f13 user: drh tags: trunk) | |
| 17:27 | Any non-zero value is considered TRUE in a WHERE clause. Ticket #1211. (CVS 2496) (check-in: 0f7af623 user: drh tags: trunk) | |
| 17:11 | Avoid ambiguous column name errors when the column name is in the USING clause of a join. Ticket #743. (CVS 2495) (check-in: 6a51bdee user: drh tags: trunk) | |
| 16:59 | Naming the join columns in the result set of a natural join does not result in an "ambiguous column name" error. Ticket #1217. (CVS 2494) (check-in: 265fb607 user: drh tags: trunk) | |
| 16:34 | Honor the full_column_names pragma on * results. Ticket #1263. (CVS 2493) (check-in: 0d57f851 user: drh tags: trunk) | |
| 15:32 | Do not allow parameters in VIEW definitions. Ticket #1270. (CVS 2492) (check-in: 0d46289f user: drh tags: trunk) | |
| 15:07 | Handle failures of getcwd() without segfaulting. Ticket #1274. (CVS 2491) (check-in: c1bd0a15 user: drh tags: version_2) | |
| 15:06 | Handle failures of getcwd() without segfaulting. Ticket #1274. (CVS 2490) (check-in: c1691004 user: drh tags: trunk) | |
| 14:45 | Fix a bug in the malloc2 tests introduced by checkin (2473). (CVS 2489) (check-in: fafaa18e user: drh tags: trunk) | |
20 Years Ago (more context)
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2000-06-06
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| 22:19 | :-) (CVS 64) (check-in: 3a2f4dca user: drh tags: trunk) | |
| 22:13 | :-) (CVS 63) (check-in: 65d2100d user: drh tags: trunk) | |
| 21:56 | :-) (CVS 62) (check-in: f4d9089c user: drh tags: trunk) | |
| 19:18 | :-) (CVS 61) (check-in: 25984b4d user: drh tags: trunk) | |
| 18:24 | :-) (CVS 60) (check-in: 4eca3bf6 user: drh tags: trunk) | |
| 18:00 | :-) (CVS 59) (check-in: a8fa6719 user: drh tags: trunk) | |
| 17:27 | GROUP BY and HAVING installed (CVS 58) (check-in: db88a0c2 user: drh tags: trunk) | |
| 13:54 | added IN and BETWEEN operators (CVS 57) (check-in: 54d19818 user: drh tags: trunk) | |
| 03:31 | :-) (CVS 56) (check-in: b52dd82f user: drh tags: trunk) | |
| 01:50 | :-) (CVS 55) (check-in: bd8b2645 user: drh tags: trunk) | |