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20 check-ins using file src/btree.c version a0d9a1c7
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2017-05-02
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| 16:46 | Additional comments on the sqlite3ExprIsConstantOrGroupBy() routine. No code changes. (Closed-Leaf check-in: 8424492e user: drh tags: having-where-optimization) | |
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2017-05-01
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| 19:53 | Remove an unnecessary branch. (check-in: a3317959 user: drh tags: having-where-optimization) | |
| 17:04 | Futher bug fixes to the function that determines when a materialized view can be reused. (Closed-Leaf check-in: c64fe3a1 user: drh tags: materialized-view-reuse) | |
| 16:37 | Minor bug fixes and performance enhancement. (check-in: b2aae559 user: drh tags: materialized-view-reuse) | |
| 15:15 | Initial implementation of an optimization that attempts to reuse the same materialization of a view on a self-join of the view. (check-in: 478c34b9 user: drh tags: materialized-view-reuse) | |
| 14:25 | Update this branch with latest trunk changes. (check-in: 11f4761c user: dan tags: schemalint) | |
| 14:09 | Add extra tests for the optimization on this branch. (check-in: 4921cd95 user: dan tags: having-where-optimization) | |
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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: 5375a3ce user: dan tags: having-where-optimization) | |
| 19:29 | Add a single testcase() macro to the subquery processing logic. (check-in: 4e1df76e user: drh tags: trunk) | |
| 18:02 | Improvements to opcode documentation in the bytecode engine. No changes to code. (check-in: e54c9f8d user: drh tags: trunk) | |
| 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: d7bb79ed user: drh tags: trunk) | |
| 14:56 | Minor size and performance improvements to the push-down optimization. (Closed-Leaf check-in: 91dfb61a user: drh tags: pushdown-optimization) | |
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2017-04-28
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| 19:59 | Within a loop that uses a non-covering index test, test non-indexed terms that can be tested without seeking the main table cursor before those that cannot. (check-in: afe68f0a user: dan tags: pushdown-optimization) | |
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2017-04-27
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| 14:12 | Do not write master journal filenames into server-mode journal files. Use SQLITE_MUTEX_STATIC_APP1 to protect critical sections in server.c. (check-in: 3144ae40 user: dan tags: server-edition) | |
| 13:05 | If possible, delete the journal file when a database connection is closed. (check-in: d5b5326d user: dan tags: server-edition) | |
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2017-04-26
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| 20:45 | Experimental implementation of pessimistic page-level locking based on rollback mode. (check-in: 64ecf7c7 user: dan tags: server-edition) | |
| 17:21 | Add new test file cachespill.test. (check-in: 2d0b6431 user: dan tags: trunk) | |
| 14:34 | Replace <fts5.h> with "fts5.h" in test file fts5_test_tok.c. (check-in: 63d9ca5c user: dan tags: trunk) | |
| 04:32 | Fix a subtle bug in Lemon discovered and reported on the mailing list by Kelvin Sherlock, who also suggested the correct fix. (check-in: 304689f8 user: drh tags: trunk) | |
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2017-04-24
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| 14:16 | When building an ephemeral table of integers, do not assume that the table does not already contain N if the insert cursor points to N-1. Fix for ticket [61fe9745]. (check-in: 1c1b0862 user: dan tags: trunk) | |