This Day In History For 2018-04-29
1 Year Ago (more context)
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2017-04-29
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| 20:53 | Automatically transfer terms from the HAVING clause to the WHERE clause of an aggregate query in cases where the result of evaluating the term depends only one one or more of the GROUP BY expressions (and on no other inputs). (check-in: 5375a3ce56 user: dan tags: having-where-optimization) | |
| 19:29 | Add a single testcase() macro to the subquery processing logic. (check-in: 4e1df76e3d user: drh tags: trunk) | |
| 18:02 | Improvements to opcode documentation in the bytecode engine. No changes to code. (check-in: e54c9f8db5 user: drh tags: trunk) | |
| 15:48 | Avoid reading the file-size before page 1 is read-locked. (check-in: f6b025bf63 user: dan tags: server-edition) | |
| 15:27 | Evaluate WHERE clause terms that reference only the index before evaluating terms that require the table, and thereby avoid seeking the table row if index terms are false. This is called the "push-down" optimization in the MySQL world, we are told. Do not confuse with WHERE-clause push-down. (check-in: d7bb79ed3a user: drh tags: trunk) | |
| 14:56 | Minor size and performance improvements to the push-down optimization. (Closed-Leaf check-in: 91dfb61a1a user: drh tags: pushdown-optimization) | |
2 Years Ago (more context)
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2016-04-29
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| 20:30 | Fix the temporary directory search algorithm for unix so that it fails gracefully even if all candidate directories are inaccessible. This fixes a bug that was introduced by check-in [9b8fec60d8e]. (check-in: 614bb709d3 user: drh tags: trunk) | |
| 17:07 | Fix the nolock VFS so that it supports shared memory. (check-in: ce11f8e8a3 user: drh tags: apple-osx) | |
| 16:01 | Merge the latest enhancements from trunk. (check-in: 91e5c07eaf user: drh tags: begin-concurrent) | |
| 15:52 | Merge enhancements from trunk, and in particular the TEMP file deferred I/O enhancements. (check-in: 81b76901e6 user: drh tags: apple-osx) | |
| 15:39 | Postpone I/O associated with TEMP files for as long as possible, with the hope that the I/O can ultimately be avoided completely. (check-in: 9d0a5ae002 user: drh tags: trunk) | |
| 14:12 | Fix test script temptable2.test so that it works with the "inmemory_journal" and "journaltest" permutations. (Closed-Leaf check-in: b7bec7f2d3 user: dan tags: tempfiles-25) | |
| 11:35 | Merge latest trunk changes, including test case fixes, with this branch. (check-in: 99794aca7b user: dan tags: tempfiles-25) | |
| 11:33 | Modify the permutations.test script so as to set any permutation specific configuration values before running each individual test script. Fix a mostly harmless buffer overread in the sessions module. (check-in: 4cbd502454 user: dan tags: trunk) | |
| 11:28 | Lemon bug fix: Do not merge action routines unless their destructors are also identical. Problem and suggested fix reported on the mailing list by Kelvin Sherlock. (check-in: 4792d6dbba user: drh tags: trunk) | |
| 10:13 | Fix an almost entirely harmless buffer overread in the sessions module. (Closed-Leaf check-in: 89b0ee3351 user: dan tags: permutations-fix) | |
| 02:55 | Some optimization comments added to vdbe.c. No functional changes to code. (check-in: e7c22e3bff user: drh tags: trunk) | |
3 Years Ago (more context)
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2015-04-29
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| 20:54 | Improve fts5 tests. (check-in: c1f07a3aa9 user: dan tags: fts5) | |
| 16:50 | Use sqlite3_malloc64() in place of sqlite3_malloc() internally. (check-in: 48f553b05c user: drh tags: trunk) | |
| 00:35 | Improved support for OSTRACE on Windows. (check-in: ca43812bde user: drh tags: trunk) | |
4 Years Ago (more context)
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2014-04-29
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| 19:01 | Test that the default values used when sqlite_stat1 data is not available are calculated correctly. Fixes for the same. (check-in: e2d42f909d user: dan tags: experimental-costs) | |
| 16:46 | Merge trunk changes into this branch. (check-in: d74299f037 user: dan tags: experimental-costs) | |
| 16:10 | Ignore likelihood() values on indexed IPK lookups. (check-in: 5bb7757a7b user: dan tags: experimental-costs) | |
| 12:01 | Fix a test case so that it updates sqlite_stat1 consistently. (check-in: 2dc5a0b555 user: dan tags: experimental-costs) | |
5 Years Ago (more context)
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2013-04-29
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| 18:07 | Improve the error message issued when an FTS query exceeds the maximum allowable tree depth. (check-in: f480b1fe60 user: dan tags: trunk) | |
| 17:12 | Fix an off-by-one in the code for limiting the depth of FTS expression trees. (check-in: 72ac73189c user: dan tags: trunk) | |
| 09:20 | Merge mmap test fix from trunk. (check-in: 95811877fd user: mistachkin tags: winOsTrace) | |
| 09:17 | Fix mmap1.test so that it passes on windows as well as unix. (check-in: 52417eac3e user: dan tags: trunk) | |
| 08:58 | Adjust a WAL test result due to changes in the corresponding return code name. (check-in: 9272009f79 user: mistachkin tags: winOsTrace) | |
| 08:56 | Merge updates from trunk. (check-in: 3a245a832d user: mistachkin tags: winOsTrace) | |
| 07:01 | Update 'fuzzerfault' test for its new module loading command. Fix several test names in 'io.test' and make sure the database gets closed between tests. (check-in: e81e9ca11d user: mistachkin tags: trunk) | |
| 03:09 | More refinements to Windows OSTRACE usage. Replace all usage of sqlite3TestErrorName() with sqlite3ErrName() and add missing return codes. (check-in: 05ba5e23fc user: mistachkin tags: winOsTrace) | |
10 Years Ago (more context)
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2008-04-29
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| 15:38 | Zero the per-pager temporary space allocation to avoid warnings from valgrind. (CVS 5068) (check-in: f854ae576e user: drh tags: trunk) | |
| 15:22 | Fix a potential buffer overrun in sqlite3_mprintf() when a non-terminated string is passed to a "%s" format with a precision specifying the number of bytes to copy. (CVS 5067) (check-in: 1f5b18419b user: drh tags: trunk) | |
| 00:15 | Always convert IEEE NaN into NULL. Ticket #3060. Add test cases to verify that this is happening. (CVS 5066) (check-in: 9b07e59e51 user: drh tags: trunk) | |
15 Years Ago (more context)
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2003-04-29
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| 18:01 | Accept a "/" or "go" on a line by itself as an SQL statement terminator in the command-line shell. This allows SQL Server and Oracle scripts to be played into SQLite without change. (CVS 944) (check-in: 8211f57b38 user: drh tags: trunk) | |
| 17:19 | Allow the ASC or DESC keyword to appear after a column name in a CREATE INDEX statement. SQLite indices are aways ASC (ascending) regardless of which keyword is used. (CVS 943) (check-in: 1a0c542088 user: drh tags: trunk) | |
| 16:20 | The sqlite_complete() function should ignore carriage-return characters. (Oops - some unrelated edits also made it into this check-in.) (CVS 942) (check-in: c6bf62e41c user: drh tags: trunk) | |