This Day In History For 2025-07-04
1 Year Ago (more context)
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2024-07-04
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| 18:56 | Add test cases to in7.test. (check-in: 07817efc10 user: dan tags: reuse-subqueries) | |
| 18:26 | Disable the reuse of IN-clause subqueries if the subquery is an explicit "SELECT ALL". The ALL keyword is almost never used in actual practice (most developers don't even know it can be used) so this should not interfere with the optimization, but it does give us a convenient way to turn it off for testing purposes. (check-in: a81299be2c user: drh tags: reuse-subqueries) | |
| 17:49 | Update EXPLAIN output to include P4_SUBRTNSIG. (check-in: 61e56923c8 user: dan tags: reuse-subqueries) | |
| 16:57 | Be more aggressive about reusing subqueries that appear on the RHS of IN operators that have been replicated due to the predicate push-down optimization. (check-in: 2accf32b6e user: drh tags: reuse-subqueries) | |
| 11:15 | Add comment using the name "predicate push-down optimization" to what we have also called "WHERE-clause push down". No changes to code. (check-in: be77fe701c user: drh tags: trunk) | |
| 09:45 | For shell completion, use pragma_table_xinfo instead of pragma_table_info, so that generated columns are handled, as reported in forum post f0735e05d8d7e857. (check-in: a204ffc06b user: stephan tags: trunk) | |
3 Years Ago (more context)
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2022-07-04
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| 15:14 | Size reduction and performance optimization in sqlite3WalFindFrame(). (check-in: 1a8c2e5437 user: drh tags: trunk) | |
| 09:41 | In the getNormalPage() routine of pager.c, consolidate pgno error checking into a single spot for small size reduction and performance increase. (check-in: a1c090e081 user: drh tags: trunk) | |
4 Years Ago (more context)
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2021-07-04
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| 22:38 | Streamline most common command definition (check-in: dd76b41a72 user: larrybr tags: cli_extension) | |
| 22:33 | Enhance the treeview debugging mechanism so that it correctly deals with TK_ROW expression nodes. (check-in: e87fdb6514 user: drh tags: trunk) | |
5 Years Ago (more context)
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2020-07-04
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| 20:29 | Fix the table_info pragma so that it always checks the schema version and reprepares, even if it is a no-op. (check-in: 6da77973ab user: drh tags: trunk) | |
10 Years Ago (more context)
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2015-07-04
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| 18:44 | Optimize seek operations on fts5 b-trees. (check-in: 8cf02090ce user: dan tags: trunk) | |
| 18:15 | Preserve the number of requested PAGECACHE pages even if the memory pointer or size is zero. Enhance the pcache1.c header comment to explain the memory layout of a page cache line. (check-in: dacb2a615c user: drh tags: trunk) | |
| 15:35 | Fix a problem in the fts5 integrity-check. (check-in: 4e473559c9 user: dan tags: trunk) | |
| 11:14 | Do not preserve the btreeInitPage() results in PRAGMA integrity_check if there were cell sizing errors because PRAGMA cell_size_check was turned off during the btreeInitPage() call. (check-in: 743bf1f184 user: drh tags: trunk) | |
| 00:04 | Sync up Makefile clean targets for FTS5. (check-in: 43ead44ef6 user: mistachkin tags: trunk) | |