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13 check-ins using file src/expr.c version 3286e703
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2013-06-22
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| 15:44 | Add the ability to disable the omit-join-table optimization for testing purposes. (Closed-Leaf check-in: d929df9b user: drh tags: omit-join-table-opt) | |
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2013-06-21
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| 02:15 | Only eliminate inner loops of a JOIN if they are the RHS of a LEFT JOIN and if they give no more than a single result. This appears to give correct answers in all cases. (check-in: d7a25cc7 user: drh tags: omit-join-table-opt) | |
| 02:05 | Attempt to disable inner loops of a join that do not generate output. This does not work, since the inner loops might run zero times and thus inhibit all output. Needs to be enhanced to work only for LEFT JOINs or when we know that the inner loop will always run at least once. (check-in: ca839723 user: drh tags: omit-join-table-opt) | |
| 00:35 | Modify the query planner interface so that it always passes in the result set. This is the first step toward adding an optimization that will omit tables from a join that do not contribute to the result. (check-in: 2c2577e6 user: drh tags: omit-join-table-opt) | |
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2013-06-20
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| 17:32 | Add a NEVER() macro and an explanation comment around an unreachable branch in the STAT3 logic. (check-in: 604c3c5d user: drh tags: nextgen-query-plan-exp) | |
| 14:17 | Pull in the posix_fallocate() change from trunk. (check-in: d94db3fd user: drh tags: nextgen-query-plan-exp) | |
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2013-06-19
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| 23:48 | Merge in trunk changes to os_unix.c that allow the code to build on unix platforms that lack posix_fallocate(). (check-in: bf576406 user: drh tags: nextgen-query-plan-exp) | |
| 18:01 | Add in the cost of doing a table lookup on OR searches. Make test case changes to deal with difference in STAT3 behavior. (check-in: d97898e8 user: drh tags: nextgen-query-plan-exp) | |
| 13:59 | Additional compiler warning fixes. (check-in: 8d2ae8e2 user: drh tags: nextgen-query-plan-exp) | |
| 13:32 | Fix a harmless uninitialized variable warning. (check-in: 9d3ef3bd user: drh tags: nextgen-query-plan-exp) | |
| 12:34 | Simplify and add invariants to the WhereLoop merging logic inside of whereLoopInsert(). (check-in: 8f27f35f user: drh tags: nextgen-query-plan-exp) | |
| 03:27 | Fix compiler warnings. Fix a harmless off-by-one error in the solver. (check-in: 10021941 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-18
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| 20:06 | Adjustments to testcase() macros for improved testability. (check-in: 4fbb0c4d user: drh tags: nextgen-query-plan-exp) | |