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100 descendants of a51d8c9249643648
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2013-06-26
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| 13:31 | Bring the sessions branch up-to-date with all the latest trunk changes. (check-in: 086a1272 user: drh tags: sessions) | |
| 13:22 | Add the SQLITE_STMTSTATUS_VM_STEPS option for sqlite3_stmt_status(). (check-in: bd4267f1 user: drh tags: trunk) | |
| 11:49 | Omit tables from the FROM clause of a join if their presence makes no difference in the final output. (check-in: 6505e2ab user: drh tags: trunk) | |
| 11:43 | Cut over the next generation query planner. Increase the version number to 3.8.0. (check-in: 0fe31f60 user: drh tags: trunk) | |
| 00:34 | Fix an uninitialized variable detected by valgrind. Unclear whether or not this should apply to trunk. (Closed-Leaf check-in: 19ab4811 user: drh tags: nextgen-query-plan-exp) | |
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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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| 19:39 | Enhance error message handling for the vtshim module. (Closed-Leaf check-in: b4a0d532 user: mistachkin tags: disposable-vtable) | |
| 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) | |
| 01:27 | The vtshim xCreate and xConnect functions need to store the pAux pointer into the newly created vtable object. Style fixes. (check-in: 43913c7b user: mistachkin tags: disposable-vtable) | |
| 00:20 | Integration adjustments for the vtshim module. (check-in: bf2e28dd user: mistachkin tags: disposable-vtable) | |
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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) | |
| 01:52 | Remove some redundant and unreachable code. (check-in: 4c6d58d7 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-17
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| 21:37 | Add more testcase() macros. Fix a memory leak following OOM in the virtual table analysis logic. (check-in: b61402af user: drh tags: nextgen-query-plan-exp) | |
| 18:20 | Simplifications to the NGQP. Add the queryplantest makefile target. Add testcase() macros in the NGQP. (check-in: eaf1f1b4 user: drh tags: nextgen-query-plan-exp) | |
| 14:18 | Use automatic indices on subqueries of the FROM clause when appropriate. (check-in: e8f12428 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-15
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| 15:11 | Fix compiler warnings. (check-in: 3e8ac469 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-14
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| 13:27 | Comment tweaks in where.c. No changes to code. (check-in: cecc5fdd user: drh tags: nextgen-query-plan-exp) | |
| 02:51 | Add a new ORDER BY optimization that bypasses ORDER BY terms that are constrained by == and IS NULL terms of the WHERE clause. (check-in: b920bb70 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-13
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| 17:58 | An index might be useful for ORDER BY if any indexed column is in the ORDER BY clause, not just the first indexed column. (check-in: ade473b5 user: drh tags: nextgen-query-plan-exp) | |
| 17:28 | Make sure that disabling the covering index scan optimization does not prevent a covering index from being used to satisfy an ORDER BY clause. (check-in: e8b7ea82 user: drh tags: nextgen-query-plan-exp) | |
| 15:50 | Restore the ability to do a BETWEEN query on the rowid. Also fix a nearby comment. (check-in: 459a7b90 user: drh tags: nextgen-query-plan-exp) | |
| 15:16 | Make the MIN() and MAX() macros available in sqliteInt.h. Add TUNING comments to the NGQP and adjust costs slightly. (check-in: 3a72af2a user: drh tags: nextgen-query-plan-exp) | |
| 14:51 | Fix an off-by-one error in the WhereCost to integer conversion. (check-in: b5ca80d9 user: drh tags: nextgen-query-plan-exp) | |
| 00:32 | Add a prototype for an extension that sits in between the SQLite native code virtual table interface and a CLR IDisposable object. (check-in: 10bba8d0 user: drh tags: disposable-vtable) | |
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2013-06-12
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| 20:18 | Activate the one-pass optimization. Update comments, especially the descriptions of the various objects. (check-in: e120c558 user: drh tags: nextgen-query-plan-exp) | |
| 17:55 | Bug fixes in the handling of virtual tables. (check-in: 25c0f729 user: drh tags: nextgen-query-plan-exp) | |
| 17:17 | Merge all changes from trunk. (check-in: f2e15b19 user: drh tags: nextgen-query-plan-exp) | |
| 17:08 | "make test" now passing. (check-in: addd7f46 user: drh tags: nextgen-query-plan-exp) | |
| 14:52 | Add the "queryplanner" test permutation. Continuing refinements to NGQP. (check-in: 25e2cde1 user: drh tags: nextgen-query-plan-exp) | |
| 03:48 | Continue refining the NGQP (check-in: 40567fdd user: drh tags: nextgen-query-plan-exp) | |
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2013-06-11
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| 18:59 | Improved processing of DISTINCT. (check-in: ba897100 user: drh tags: nextgen-query-plan-exp) | |
| 13:30 | Fix the Parse.nQueryLoop state variable to work with NGQP. (check-in: f1cac24f user: drh tags: nextgen-query-plan-exp) | |
| 02:36 | Use a logarithmic rather than linear cost and row-count measures. Do not report row count estimates in EQP output. (check-in: b777b109 user: drh tags: nextgen-query-plan-exp) | |
| 02:32 | Fixes to EXPLAIN QUERY PLAN output. Change weights back to something closer to what they are in legacy. More test case fixes. (Closed-Leaf check-in: 36373b85 user: drh tags: nextgen-query-plan-logcost) | |
| 01:50 | Handle virtual tables correctly when using logarithmic costs. Fixes to test cases. (check-in: e612664a user: drh tags: nextgen-query-plan-logcost) | |
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2013-06-10
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| 23:30 | Fix test cases for the new EXPLAIN QUERY PLAN format. Add the wherecosttest tool. Other fixes to logarithm cost. (check-in: aa580e36 user: drh tags: nextgen-query-plan-logcost) | |
| 20:46 | Fix some minor issues with logarithmic cost in NGQP. (check-in: 69cf8772 user: drh tags: nextgen-query-plan-logcost) | |
| 19:12 | First attempt to store costs and row counts as a logarithm. (check-in: 9e810967 user: drh tags: nextgen-query-plan-logcost) | |
| 14:56 | Simplification and performance tweak to the high-speed NGQP bypass. (check-in: 0f8a38ee user: drh tags: nextgen-query-plan-exp) | |
| 12:34 | Performance improvements for whereScan methods. (check-in: aae14350 user: drh tags: nextgen-query-plan-exp) | |
| 12:17 | Add a high-speed bypass for the NGQP for the common case of a simply query with quality constraints that outputs a single row. (check-in: 8d1ba309 user: drh tags: nextgen-query-plan-exp) | |
| 12:15 | Minor problems in the high-speed NGQP fixed. (Closed-Leaf check-in: 20eeccf1 user: drh tags: nextgen-query-plan-fast) | |
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2013-06-09
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| 17:21 | High-speed version of NGQP. Still has some minor problems. (check-in: db2415fa user: drh tags: nextgen-query-plan-fast) | |
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2013-06-07
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| 02:04 | Must faster computation of estimated logarithm. (check-in: dfbca3ac user: drh tags: nextgen-query-plan-exp) | |
| 00:29 | Further prepare-time performance improvements. (check-in: 02741d17 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-06
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| 23:44 | Performance improvements. (check-in: 9f8e84ab user: drh tags: nextgen-query-plan-exp) | |
| 23:02 | Improved management of the space to hold WhereLoop.aLTerm[]. (check-in: d4141ecb user: drh tags: nextgen-query-plan-exp) | |
| 19:25 | Remove some commented-out code that was mistakenly left in the previous check-in. (check-in: b4a5dbad user: drh tags: nextgen-query-plan-exp) | |
| 19:16 | Clean up and reorganize the elements of the various objects in the analysis tree for the NGQP. (check-in: bfc76ae1 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-05
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| 23:39 | Move the definitions of the WhereLevel and WhereInfo objects out of sqliteInt.h and into where.c. This will facilitate future refactoring of the internal query planner data structures. (check-in: 1574653b user: drh tags: nextgen-query-plan-exp) | |
| 17:53 | Performance improvement for the OR-clause analysis in the NGQP. (check-in: 9b1c4954 user: drh tags: nextgen-query-plan-exp) | |
| 16:19 | Minor performance tuning of the NGQP. (check-in: cbef38c2 user: drh tags: nextgen-query-plan-exp) | |
| 12:47 | Performance tweak to whereLoopInsert(). (check-in: 1c4a7880 user: drh tags: nextgen-query-plan-exp) | |
| 12:18 | Add a test case contributed on the mailing list that works in NGQP but fails in legacy. (check-in: 96afe508 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-04
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| 23:40 | Update some variable names and comments in the ORDER BY optimizer. Fix a bug in the ORDER BY optimizer dealing with IS NULL constraints. Updates to test cases. (check-in: cf96eb59 user: drh tags: nextgen-query-plan-exp) | |
| 18:27 | Restore the PRAGMA reverse_unordered_selects behavior. (check-in: f49cd6c4 user: drh tags: nextgen-query-plan-exp) | |
| 18:03 | Get the index-only optimization working for OR queries. (check-in: 774d5ff8 user: drh tags: nextgen-query-plan-exp) | |
| 15:31 | Test case updates. (check-in: 0360fec7 user: drh tags: nextgen-query-plan-exp) | |
| 13:37 | Better determination of when an index is UNIQUE. (check-in: 63fd025a user: drh tags: nextgen-query-plan-exp) | |
| 13:07 | Increase the estimated full-scan cost for an FTS3 table. (check-in: 8d9f29f8 user: drh tags: nextgen-query-plan-exp) | |
| 12:58 | Fix a display issue with EXPLAIN QUERY PLAN. (check-in: ff2fa407 user: drh tags: nextgen-query-plan-exp) | |
| 12:42 | Refactor the ORDER BY optimizer in the NGQP so that it is easier to maintain and so that it can support optimizing out GROUP BY and DISTINCT clauses. (check-in: e605c468 user: drh tags: nextgen-query-plan-exp) | |
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2013-06-03
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| 22:08 | Remove more vestiges of sqlite_query_plan from the test cases. (check-in: eb27086e user: drh tags: nextgen-query-plan-exp) | |
| 21:25 | Adjust the xBestIndex methods on both the fuzzer and transitive_closure virtual tables so that an unused MATCH operator gets a really large cost. Remove ambiguities from the fuzzer test cases. (check-in: e2c1af78 user: drh tags: nextgen-query-plan-exp) | |
| 20:46 | Pull in recent trunk changes. Fix the ORDER BY optimizer so that it is better able to deal with COLLATE clauses. Clean up ambiguities in the descidx1.test script. (check-in: 6bc71dfc user: drh tags: nextgen-query-plan-exp) | |
| 19:17 | Do not use an index fullscan for an UPDATE or DELETE or if disabled by sqlite3_test_control() or sqlite3_config(). (check-in: fabb2185 user: drh tags: nextgen-query-plan-exp) | |
| 19:01 | Resolve ambiguities in test cases in collate2.test. (check-in: dcbbcb2e user: drh tags: nextgen-query-plan-exp) | |
| 18:50 | Fix a bug in the transitive_closure virtual table that NGQP exposes. Update between.test module to avoid using sqlite_query_plan. (check-in: aa66b864 user: drh tags: nextgen-query-plan-exp) | |
| 18:14 | Fix EXPLAIN QUERY PLAN row counts for the rtree virtual table tests. (check-in: 15328987 user: drh tags: nextgen-query-plan-exp) | |
| 17:35 | Update the NGQP to make use of STAT3 information if it is available. (check-in: ff134e6e user: drh tags: nextgen-query-plan-exp) | |
| 16:56 | Honor the orderByConsumed boolean returned from virtual table query planner. (check-in: aaf7f589 user: drh tags: nextgen-query-plan-exp) | |
| 16:03 | Fix to the logic that disables constraints on virtual tables. (check-in: 62d38240 user: drh tags: nextgen-query-plan-exp) | |
| 15:34 | Fix an issue that was causing ORDER BY DESC to come out in ascending order. (check-in: 02984012 user: drh tags: nextgen-query-plan-exp) | |
| 15:24 | Virtual tables now always report 25 rows instead of 0 rows in the EXPLAIN QUERY PLAN output. Adjust tests accordingly. (check-in: 7d91f688 user: drh tags: nextgen-query-plan-exp) | |
| 15:07 | Set the WHERE_UNIQUE flag on loops that can only run once. (check-in: 510f4d8e user: drh tags: nextgen-query-plan-exp) | |
| 14:15 | Add test cases to verify that ticket [bc1aea7b725f2761] has been fixed in the NGQP. (check-in: 9b97af94 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-31
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| 20:43 | The NGQP might not find a solution if INDEXED BY constraints on the query are set wrong. If that is the case, print a "no query solution" error and abort before trying to use the non-existant solution. (check-in: 42511a7e user: drh tags: nextgen-query-plan-exp) | |
| 20:28 | Do not search using ON clause constraints of LEFT JOINs to the right of the table. (check-in: 723f901a user: drh tags: nextgen-query-plan-exp) | |
| 20:00 | Make sure a unique cursor number is allocated for automatic indices. (check-in: 433d1aec user: drh tags: nextgen-query-plan-exp) | |
| 19:14 | Do not attempt to generate code in the NGQP if there have been prior errors, since with prior errors some of the expressions might not be fully named resolved. (check-in: 665e4291 user: drh tags: nextgen-query-plan-exp) | |
| 18:20 | Fix a problem with code generation on LEFT JOIN of tables without an index. (check-in: 0b1bee92 user: drh tags: nextgen-query-plan-exp) | |
| 18:13 | Another virtual table fix in NGQP. (check-in: 2f2ce416 user: drh tags: nextgen-query-plan-exp) | |
| 17:55 | Fix problems in the virtual table logic for NGQP. (check-in: 23af28e2 user: drh tags: nextgen-query-plan-exp) | |
| 15:50 | Remove the definitions of objects that are no longer used: WhereCost, WherePlan, and WhereBestIdx. (check-in: 816f8add user: drh tags: nextgen-query-plan-exp) | |
| 15:18 | Allow tracing of whereLoopInsert() when the 0x8 bit is set on ".wheretrace". Remove the use of sqlite_query_plan from where2.test. Fix a bug in the code generator for OR clause optimizations. (check-in: 707f0323 user: drh tags: nextgen-query-plan-exp) | |
| 14:31 | Enhance the shell to provide more flexibility when entering numeric arguments on dot-commands. In particular, allow hex arguments to .wheretrace. (check-in: b9578c37 user: drh tags: nextgen-query-plan-exp) | |
| 13:36 | Futher enhancements to the ORDER BY optimizer. (check-in: d8efa5f8 user: drh tags: nextgen-query-plan-exp) | |
| 12:43 | Improved detection of unnecessary ORDER BY clauses. (check-in: 58805eb3 user: drh tags: nextgen-query-plan-exp) | |
| 11:57 | Fix the constructAutomaticIndex() routine so that it works with NGQP. (check-in: 5e1e6139 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-30
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| 23:21 | Improvements to the ORDER BY suppressor in the NGQP. (check-in: 24a2e9dd user: drh tags: nextgen-query-plan-exp) | |
| 22:27 | Incremental check-in with various NGQP fixes. Many tests still fail. (check-in: a51d8c92 user: drh tags: nextgen-query-plan-exp) | |