083310dfcc
Change the weighting of binary searches on tables to 1/10th the cost of a
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search on an index. Change the assumed reduction in search space from a
indexed range constraint from 1/3rd to 1/4th. Do not let the estimated
number of rows drop below 1.
FossilOrigin-Name: 4847c6cb71423248b186ab7842b97c83e2f5fefd
2011-01-28 01:57:41 +00:00
6bd2c735fa
Changes to test scripts so that they work with SQLITE_ENABLE_ICU.
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FossilOrigin-Name: 465c819fdb601961eddb7304642c823d78111992
2010-11-01 05:42:26 +00:00
8342e49f62
Enhance the LIKE/GLOB query optimization so that it works as long as there
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is an index with the appropriate collating sequence and even if the default
collating sequence of the column is different.
Ticket [4711020446da7d93d99].
FossilOrigin-Name: 9f932655f9eb9fdab16d7deed98b7cad414e0ca6
2010-07-22 17:49:52 +00:00
93ee23cc03
Try to optimize LIKE and GLOB operators when RHS contains no wildcard.
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Ticket [e090183531fc274747]
FossilOrigin-Name: 613a87d62fd1f8526d53136efae5adae91824bcf
2010-07-22 12:33:57 +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
d2cb50b74c
Coverage improvements in pragma.c. Change the __DARWIN__ macro to __APPLE__,
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which is available by default on Leopard. (CVS 6153)
FossilOrigin-Name: 64c56226b91e57883c8059f65330318e53376b8a
2009-01-09 21:41:17 +00:00
5bd98aef66
Fix a bug in the LIKE query optimization. (Found by coverage testing.) (CVS 6137)
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FossilOrigin-Name: fe90e9116b6e1e25cf3119d2777a8e9c135153ce
2009-01-07 18:24:03 +00:00
e3602be8fd
Calling sqlite3_create_function with nArg==(-1) does not override prior
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calls on the same function name with nArg>=0. Ticket #3345 . Add the
new -argcount option to the "function" method in the TCL interface. (CVS 5684)
FossilOrigin-Name: 5aa5b8044a14f59559c1839dc0799b0d2f990809
2008-09-09 12:31:33 +00:00
9f504eab49
Fix a bug in the LIKE optimizer that occurs when the last character
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before the wildcard is an upper-case 'Z'. Ticket #2959 . (CVS 4807)
FossilOrigin-Name: 610574b23b5e73b71be71df66e084c5bf37f6ccd
2008-02-23 21:55:39 +00:00
01495b9921
Improvements to test coverage in the lemon-generated parser and in the
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sqlite3_get_table() interface. (CVS 4745)
FossilOrigin-Name: 9f95d79daeb5e7f6fd62f3c896dae4d332121d1c
2008-01-23 12:52:40 +00:00
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
9c86df5269
Fix a bug in the LIKE optimization that was causing the pattern string
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to be dequoted twice. Ticket #2407 . (CVS 4056)
FossilOrigin-Name: abf64d1d0ae3e84c4482b38198eeb44b62cc5d9e
2007-06-11 12:56:15 +00:00
619a3693a2
Add tests for the new MATCH operator. (CVS 3238)
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FossilOrigin-Name: b4024c394d25e5a0abdb07be779ae41581834c42
2006-06-14 08:48:25 +00:00
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
d64fe2f374
The LIKE optimization does the right thing when collating sequences are
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present. LIKE expressions where the left-hand side has COLLATE NOCASE
are optimized in the default case. (CVS 2637)
FossilOrigin-Name: ef84ff795c85e9d28f1cac84ff42d8d4ef84cfc4
2005-08-28 17:00:23 +00:00
8b3d990b71
Bring testing coverage of the analyze.c file up to 100%. Bugs found and
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fixed in the process. (CVS 2599)
FossilOrigin-Name: 2fe0ac4fa4d5911e266979021fa7e413d96c558d
2005-08-19 00:14:42 +00:00
55ef4d9758
The case_sensitive_like pragma added.
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Test cases added for the LIKE optimization. (CVS 2592)
FossilOrigin-Name: 72ee21c05e618b6f46f5460f8c85779c72fe32d7
2005-08-14 01:20:37 +00:00
drh