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50 most recent check-ins tagged with "nextgen-query-plan-exp"

2013-06-26
00:34
Fix an uninitialized variable detected by valgrind. Unclear whether or not this should apply to trunk. (Closed-Leaf check-in: 19ab4811d5 user: drh tags: nextgen-query-plan-exp)
2013-06-20
17:32
Add a NEVER() macro and an explanation comment around an unreachable branch in the STAT3 logic. (check-in: 604c3c5de6 user: drh tags: nextgen-query-plan-exp)
14:17
Pull in the posix_fallocate() change from trunk. (check-in: d94db3fd92 user: drh tags: nextgen-query-plan-exp)
2013-06-19
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: bf5764067a 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: d97898e8e3 user: drh tags: nextgen-query-plan-exp)
13:59
Additional compiler warning fixes. (check-in: 8d2ae8e2f3 user: drh tags: nextgen-query-plan-exp)
13:32
Fix a harmless uninitialized variable warning. (check-in: 9d3ef3bd2c user: drh tags: nextgen-query-plan-exp)
12:34
Simplify and add invariants to the WhereLoop merging logic inside of whereLoopInsert(). (check-in: 8f27f35f28 user: drh tags: nextgen-query-plan-exp)
03:27
Fix compiler warnings. Fix a harmless off-by-one error in the solver. (check-in: 10021941d0 user: drh tags: nextgen-query-plan-exp)
2013-06-18
20:06
Adjustments to testcase() macros for improved testability. (check-in: 4fbb0c4d26 user: drh tags: nextgen-query-plan-exp)
01:52
Remove some redundant and unreachable code. (check-in: 4c6d58d75d user: drh tags: nextgen-query-plan-exp)
2013-06-17
21:37
Add more testcase() macros. Fix a memory leak following OOM in the virtual table analysis logic. (check-in: b61402af69 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: eaf1f1b405 user: drh tags: nextgen-query-plan-exp)
14:18
Use automatic indices on subqueries of the FROM clause when appropriate. (check-in: e8f124284e user: drh tags: nextgen-query-plan-exp)
2013-06-15
15:11
Fix compiler warnings. (check-in: 3e8ac46918 user: drh tags: nextgen-query-plan-exp)
2013-06-14
13:27
Comment tweaks in where.c. No changes to code. (check-in: cecc5fdd5d 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: b920bb70bb user: drh tags: nextgen-query-plan-exp)
2013-06-13
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: ade473b5ae 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: e8b7ea8202 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: 459a7b9068 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: 3a72af2a95 user: drh tags: nextgen-query-plan-exp)
14:51
Fix an off-by-one error in the WhereCost to integer conversion. (check-in: b5ca80d924 user: drh tags: nextgen-query-plan-exp)
2013-06-12
20:18
Activate the one-pass optimization. Update comments, especially the descriptions of the various objects. (check-in: e120c558a5 user: drh tags: nextgen-query-plan-exp)
17:55
Bug fixes in the handling of virtual tables. (check-in: 25c0f7292a user: drh tags: nextgen-query-plan-exp)
17:17
Merge all changes from trunk. (check-in: f2e15b1974 user: drh tags: nextgen-query-plan-exp)
17:08
"make test" now passing. (check-in: addd7f466d user: drh tags: nextgen-query-plan-exp)
14:52
Add the "queryplanner" test permutation. Continuing refinements to NGQP. (check-in: 25e2cde105 user: drh tags: nextgen-query-plan-exp)
03:48
Continue refining the NGQP (check-in: 40567fddd4 user: drh tags: nextgen-query-plan-exp)
2013-06-11
18:59
Improved processing of DISTINCT. (check-in: ba897100fe user: drh tags: nextgen-query-plan-exp)
13:30
Fix the Parse.nQueryLoop state variable to work with NGQP. (check-in: f1cac24f06 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: b777b1097d user: drh tags: nextgen-query-plan-exp)
2013-06-10
14:56
Simplification and performance tweak to the high-speed NGQP bypass. (check-in: 0f8a38ee54 user: drh tags: nextgen-query-plan-exp)
12:34
Performance improvements for whereScan methods. (check-in: aae14350a3 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: 8d1ba30921 user: drh tags: nextgen-query-plan-exp)
2013-06-07
02:04
Must faster computation of estimated logarithm. (check-in: dfbca3acae user: drh tags: nextgen-query-plan-exp)
00:29
Further prepare-time performance improvements. (check-in: 02741d177b user: drh tags: nextgen-query-plan-exp)
2013-06-06
23:44
Performance improvements. (check-in: 9f8e84ab98 user: drh tags: nextgen-query-plan-exp)
23:02
Improved management of the space to hold WhereLoop.aLTerm[]. (check-in: d4141ecbea 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: b4a5dbad36 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: bfc76ae1e9 user: drh tags: nextgen-query-plan-exp)
2013-06-05
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: 1574653b9b user: drh tags: nextgen-query-plan-exp)
17:53
Performance improvement for the OR-clause analysis in the NGQP. (check-in: 9b1c4954e4 user: drh tags: nextgen-query-plan-exp)
16:19
Minor performance tuning of the NGQP. (check-in: cbef38c2d1 user: drh tags: nextgen-query-plan-exp)
12:47
Performance tweak to whereLoopInsert(). (check-in: 1c4a78807b 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: 96afe50866 user: drh tags: nextgen-query-plan-exp)
2013-06-04
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: cf96eb5945 user: drh tags: nextgen-query-plan-exp)
18:27
Restore the PRAGMA reverse_unordered_selects behavior. (check-in: f49cd6c4e7 user: drh tags: nextgen-query-plan-exp)
18:03
Get the index-only optimization working for OR queries. (check-in: 774d5ff857 user: drh tags: nextgen-query-plan-exp)
15:31
Test case updates. (check-in: 0360fec7c0 user: drh tags: nextgen-query-plan-exp)
13:37
Better determination of when an index is UNIQUE. (check-in: 63fd025ad9 user: drh tags: nextgen-query-plan-exp)