drh
434a93147c
Improved handling of constants and especially constant functions in the
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ORDER BY clause of a query. Do not optimize out "ORDER BY random()".
Fix for ticket [65bdeb9739605cc2296].
FossilOrigin-Name: dca1945aeb3fb005263f9be00ee8e72b966ae303
2014-02-26 02:26:09 +00:00
drh
165674d8db
Fix test cases so that they work when the query planner uses index size
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estimates to determine whether or not to try an covering index scan.
FossilOrigin-Name: 2f394de88f23dacd3c61e586a4214ffc6f927d97
2013-10-04 15:58:59 +00:00
dan
c63e880bdb
Minor fixes for test cases. No code changes.
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FossilOrigin-Name: ef2a6a37366f91889dc2f1ba9cb6d1257d9b05db
2013-08-21 20:04:54 +00:00
drh
aa32e3c60a
Enhance the query planner so that it looks at multiple solutions to OR
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expressions in the WHERE clause.
FossilOrigin-Name: 5e19d054105fb16ff52d265d48cc87a418603f6f
2013-07-16 21:31:23 +00:00
dan
c1f19f95b8
Fix two test script problems revealed by permutations.test.
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FossilOrigin-Name: 60cf7e44871ca8d2136ddad02188f0b9f9c380c1
2013-07-05 19:16:58 +00:00
drh
4fe425ad79
"make test" now passing.
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FossilOrigin-Name: addd7f466d6ff55f82d907286650c26b06e9397b
2013-06-12 17:08:06 +00:00
drh
8a4380d761
Fixes to EXPLAIN QUERY PLAN output. Change weights back to something closer
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to what they are in legacy. More test case fixes.
FossilOrigin-Name: 36373b85f9a97840aa06e24ae31c12fcfbae084e
2013-06-11 02:32:50 +00:00
drh
7c171098b7
Remove more vestiges of sqlite_query_plan from the test cases.
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FossilOrigin-Name: eb27086e8a8a4d5fcb2ea358256a555e34339423
2013-06-03 22:08:20 +00:00
drh
ae70cf1816
Allow tracing of whereLoopInsert() when the 0x8 bit is set on ".wheretrace".
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Remove the use of sqlite_query_plan from where2.test. Fix a bug in the
code generator for OR clause optimizations.
FossilOrigin-Name: 707f0323264c35be14847a6adc49a0dc5eaf4ad2
2013-05-31 15:18:46 +00:00
drh
2d96b934c8
Loop through the elements on the RHS of an IN operator in reverse order when
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the ORDER BY clauses specifies DESC.
FossilOrigin-Name: f78395c8896666bb1359b83fbcd58d5e3dbc39d3
2013-02-08 18:48:23 +00:00
drh
1b8fc65b92
Allow an index to be used for sorting even if prior terms of the index
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are constrained by IN operators.
FossilOrigin-Name: 98bf668ab1a8683b46ee8c94cb60f8215aabc517
2013-02-07 21:15:14 +00:00
drh
be837bddad
Avoid assertion faults in queries using indices with redundant columns.
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Ticket [3dbdcdb14e7f41].
FossilOrigin-Name: 946e06cd2a2cc209b0786b7e9d28c0746320d646
2010-04-30 21:03:24 +00:00
drh
9373b01882
Restrict the RANDOM() function to have zero arguments. Ticket #3627 . (CVS 6229)
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FossilOrigin-Name: b8b546b6ed799dc1621ef7b06273249af1042fb2
2009-02-02 01:50:39 +00:00
drh
d1d384888b
Add the experimental sqlite3_stmt_status() interface. (CVS 5781)
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FossilOrigin-Name: de473efb35ffdf9a8222a70a84dfd7d3198c87c1
2008-10-07 23:46:38 +00:00
danielk1977
284f4aca32
Fix compilation/testing with OMIT_SUBQUERY defined. Ticket #2828 . (CVS 4603)
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FossilOrigin-Name: 0b34a18651764e650faba983be8593992ab2f4a9
2007-12-10 05:03:46 +00:00
danielk1977
4152e677b8
Fixes for compilation/testing when the various OMIT macros are defined. (CVS 4423)
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FossilOrigin-Name: c8405b15c074c94dab5e33272cf1471f458d11df
2007-09-12 17:01:45 +00:00
drh
3e35580779
Disable the OR optimization if it would conflict with column
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affinity coercions. Ticket #2249 . Additional cleanup and testing
of the OR optimization. (CVS 3658)
FossilOrigin-Name: 908daaa9ab86e0bd1da6d0807d6aaba240c3cee0
2007-02-23 23:13:33 +00:00
drh
382765866b
Fix a bug in the optimizer that was causing it to miss an OR optimization
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opportunity. (CVS 3502)
FossilOrigin-Name: 9bf153b54c6e9ba16914dedd9e2949f32d7550ea
2006-11-06 15:10:05 +00:00
drh
ffe0f8901e
Correctly handle multi-column indices where multiple columns are constrained
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by IN operators with subqueries on the right-hand side. Ticket #1807 . (CVS 3184)
FossilOrigin-Name: b16541ba5e6a9514f9f317888117c68b6818f9cb
2006-05-11 13:26:25 +00:00
danielk1977
3bdca9c9a5
Test suite fixes for builds that define OMIT symbols. (CVS 2962)
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FossilOrigin-Name: 3a54a33dcb7e765ee3773397407e8929a8cfe1a9
2006-01-17 09:35:01 +00:00
danielk1977
ff890793fc
Test file fixes for libaries compiled with various SQLITE_OMIT_ macros. (CVS 2961)
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FossilOrigin-Name: c058f483a52c8043178b6329aa5e58bedf0c8277
2006-01-16 16:24:25 +00:00
danielk1977
1576cd9251
Fixes for OMIT_SUBQUERY builds: Disable where clause OR->IN optimization. Include EXISTS keyword (for new CREATE TABLE syntax). Test file fixes. (CVS 2943)
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FossilOrigin-Name: 8e79a0c24a03ccf960d6ccfb7c6b9b0f7c614e9b
2006-01-14 08:02:28 +00:00
drh
8718f52624
Disable an overzealous optimization the omitted sorting on a join if the first
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table gave a unique result. The sort can only be omitted if all tables in
the join are unique. Ticket #1358 . (CVS 2589)
FossilOrigin-Name: 4f07661279fb11a06b3ddffeda672f077c0d306a
2005-08-13 16:13:04 +00:00
drh
943af3cda1
Fix problems caused by over-agressive optimization of ORDER BY in joins.
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Lots more testing needed. (CVS 2571)
FossilOrigin-Name: 1a4e526d46280970b43505a5c8a4090767c63043
2005-07-29 19:43:58 +00:00
drh
6c30be8e51
Optimizer now converts OR-connected WHERE-clause terms into an IN operator so
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that they can be used with indices. There are known problems with the
ORDER BY optimization in this and in several prior check-ins. This
check-in is not recommended for production use. (CVS 2569)
FossilOrigin-Name: d23c8bf81e508722e92ff1b9c8bc98dc026a31f2
2005-07-29 15:10:17 +00:00
drh
ed37800693
The BETWEEN operator in a WHERE clause is now able to use indices. (CVS 2568)
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FossilOrigin-Name: cdf8c9584b945212e065e044df801c207aedb675
2005-07-28 23:12:08 +00:00
drh
a611040eea
Test cases and tuning of the new optimizer code. (CVS 2567)
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FossilOrigin-Name: 4b02703dec71aa78e5f8d8cab5b950966a4c6abc
2005-07-28 20:51:19 +00:00
