2edc5fd73a
Remove an incorrect ALWAYS() macro. Fix for ticket [e5c6268dd807fa8950] -
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a problem introduced in SQLite 3.9.0 and found by libFuzzer.
FossilOrigin-Name: 824ad96f72cb0c948ec98aca9d17a7e6790c575f
2015-11-24 02:10:52 +00:00
dea7d70d1b
Make sure that a DISTINCT query with an ORDER BY works correctly even if
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it uses a descending index. Fix for ticket [c5ea805691bfc4204b1cb9e].
FossilOrigin-Name: 0d3aef97ebddf422b8bdcbc5878970c6129e3f54
2014-12-04 21:54:58 +00:00
6284db908a
Fix query planner weights associated with choosing block-sorting. Fix
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block sorting of tables with collating functions. Fix various test cases.
All "veryquick" tests are now passing, though more tests need to be added.
FossilOrigin-Name: 01afbf97c0ff29667806e9a7c4d74ca717819de5
2014-03-19 23:24:49 +00:00
826af37865
Change the OP_Found opcode so that it expands zero-blobs prior to comparing
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them. Fix for ticket [fccbde530a6583b]
FossilOrigin-Name: e2303d1b0c17b6e7494fb7db8264f4c2ac193723
2014-02-08 19:12:21 +00:00
4fe425ad79
"make test" now passing.
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FossilOrigin-Name: addd7f466d6ff55f82d907286650c26b06e9397b
2013-06-12 17:08:06 +00:00
580c8c1816
Veryquick passes all tests now.
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FossilOrigin-Name: 7b96115e81deab0aa0472839cf787ba3f2fc64a7
2012-12-08 03:34:04 +00:00
053a128f55
Tighter VDBE code for the WHERE_DISTINCT_ORDERED case of DISTINCT keyword
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handling.
FossilOrigin-Name: 94b48064db3cbb43e911fdf7183218b08146ec10
2012-09-19 21:15:46 +00:00
3f4d1d1b02
Attempt to use a covering index even on a full table scan, under the theory
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that the index will be smaller and require less disk I/O and thus be faster.
FossilOrigin-Name: cfaa7bc12847a7006ccc93815f2395ad5259744a
2012-09-15 18:45:54 +00:00
6a36f43586
Do not consider a DISTINCT clause redundant unless a subset of the result-set is collectively subject to a UNIQUE constraint and it can be guaranteed that all columns of the subset are NOT NULL (either due to NOT NULL constraints WHERE clause terms). Fix for [385a5b56b9].
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FossilOrigin-Name: 7b8548b1872cc1225355ba8311e93dd08d6526e2
2012-04-20 16:59:24 +00:00
2f56da3f26
Changes to various test scripts so that veryquick.test runs with OMIT_COMPOUND_SELECT defined.
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FossilOrigin-Name: 76bb649ee2633226324130f5898622c348f93769
2012-02-13 10:00:35 +00:00
33f111dc72
Remove the undocumented PRAGMA omit_readlock hack.
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FossilOrigin-Name: 96900c47e4fc6ed55cefc10d55d3d8d16bcb1d31
2012-01-17 15:29:14 +00:00
1c9d835d49
Use OP_SorterOpen instead of OP_OpenEphemeral to implement GROUP BY.
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FossilOrigin-Name: ebf819aaa555bd79fddfc0a6f9827a2539095d6c
2011-09-01 16:01:27 +00:00
94e08d92f9
Fix a broken assert() in where.c.
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FossilOrigin-Name: 090b29177fbc9faa83b560d92ddc3710d291776e
2011-07-02 06:44:05 +00:00
6f3439697e
Improve use of indexes to optimize DISTINCT queries.
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FossilOrigin-Name: 6c202ea0247ff509f696eee3839975a88ed26cf2
2011-07-01 18:26:40 +00:00
50118cdfdb
Improvements and tests for detection of redundant DISTINCT qualifiers.
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FossilOrigin-Name: 7337293c87fb563604dd6ad284f2d1e30c938b4c
2011-07-01 14:21:38 +00:00
drh