ed754ce2cc
Further refinements to table order selection on join query planning.
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FossilOrigin-Name: defaf0d99a807027f8883bf821b6482025f9f54e
2010-04-15 01:04:54 +00:00
98cdf62690
Continuing refinements of the range-scan optimizations in where.c.
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The range scores are changed from an integer 1..9 to 0..100.
FossilOrigin-Name: f0c24b5fb86940f1a88adfb39cc4b9cbfcc66f8a
2009-08-20 18:14:42 +00:00
c4ac22e905
Disable the LIKE optimization if the affinity of the LHS column is
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not TEXT. Ticket #3901 . (CVS 6727)
FossilOrigin-Name: a255c645c46ae03b65f862858fe57e462076e1fc
2009-06-07 23:45:10 +00:00
1d46146b58
Attempt to optimize virtual table queries with 'OR' expressions in the WHERE clause. (CVS 6527)
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FossilOrigin-Name: f61e4cd93682fd98bea2a71d346f9eaa68454390
2009-04-21 09:02:45 +00:00
a7e770612b
Make sure the OR-clause optimizer takes the cost of sorting into account.
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Reset the rowid cache on the OP_Rewind and OP_Last opcodes. Bump the
version number so that we can do an emergency release. Ticket #3581 . (CVS 6173)
FossilOrigin-Name: d28b58209bf5eb575d0cad8dc71ac043395c6471
2009-01-14 00:55:09 +00:00
04bbcd5ce9
Fix a bug in the multi-index OR cost estimator. Remove leftover "breakpoint"
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commands from test scripts. (CVS 6086)
FossilOrigin-Name: b090d5736d7eaec17a39d3133e1587b1d2a42acb
2008-12-30 17:55:00 +00:00
239080fbd5
Still more test cases in where7.test. (CVS 6080)
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FossilOrigin-Name: eb9ba5fe70df56ee00828f7dbaf71ae6f825737d
2008-12-30 14:40:06 +00:00
1cfdce1c45
Add many new test cases to where7.test. (CVS 6079)
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FossilOrigin-Name: 174985831f9c8f5c393556d3248b01852573abc7
2008-12-30 14:14:03 +00:00
ca8c4667a8
Multi-index OR optimizer response to ORDER BY rowid.
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But fix in sqlite3_stmt_status(): report a full table scan
when "ORDER BY rowid" is used without constraints. (CVS 6069)
FossilOrigin-Name: 3464d369d3b6899ec726cf5b42b68b1dac2ba982
2008-12-28 20:47:02 +00:00
294352578e
Optimize WHERE clauses that constain AND, BETWEEN, and LIKE terms as operands
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of an OR. (CVS 6068)
FossilOrigin-Name: 67cf24b30e087796cfb0fccf47328e72ade5ecdc
2008-12-28 18:35:08 +00:00
23d04d5a20
Continuing improvements to the multi-index OR-clause optimizer. Added a
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few simple test cases. (CVS 6062)
FossilOrigin-Name: 55d4f493e7df8515574a75caec9967d6c71b6012
2008-12-23 23:56:22 +00:00
drh