175b8f06f7
Remove support for STAT3. The sqlite_stat3 tables are ignored, if they
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exist. STAT4 continues to work as it always has, and as it is a superset of
STAT3 is the recommended replacement.
FossilOrigin-Name: 1e17ea2fd1df4ad49138c787c8fe3207dd0c25c93f9001d52a9b69f8c12e841c
2019-08-08 15:24:17 +00:00
03c3905f94
Fix a dangling-else problem that was causing recursive CTEs to malfunction.
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Begin fixing test cases to work with the new EQP output.
FossilOrigin-Name: 82ca44b82fed6814c84440ba8bfaa019488ab956e84ac165180e2fcece6facb2
2018-05-02 14:24:34 +00:00
169dd928c5
Add the SQLITE_DBCONFIG_ENABLE_QPSG option to activate the query planner
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stability guarantee. This involves refactoring the sqlite3.flags bitvector
to carve out a free bit to use.
FossilOrigin-Name: 7076e8283ebae1b45a5d85d9538b49b6da399d38c3c6935de100f948f814f6a9
2017-06-26 13:57:49 +00:00
41d2e66ef3
Add the SQLITE_LIKE_DOESNT_MATCH_BLOBS compile-time option.
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FossilOrigin-Name: 9e1d6d4c391ff90077f0d1cdeb567969fee9f747
2015-12-01 21:23:07 +00:00
4eed05347c
Fix a memory leak caused by duplicate entries in the sqlite_stat1 table.
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FossilOrigin-Name: 2f58c8c9722fffc486610f9e6b08178d53a56b64
2015-04-20 15:13:08 +00:00
cef2584335
Fix an obscure memory leak in sqlite3Stat4ProbeFree()
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FossilOrigin-Name: c72abbe2c1735f3d563c6672616b2918b6209922
2015-04-20 13:59:18 +00:00
a9c18a9067
Test cases added. Comments fixed. Proposed solution for
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ticket [05f43be8fdda9fbd9].
FossilOrigin-Name: 6b993bd54035b67f4d84941e3f444ca79b7feee1
2015-03-06 20:49:52 +00:00
b51926e67c
Update test script analyze3.test to account for the fact that SQLite now prefers a full-table scan over a non-covering index scan that visits a large percentage of the table rows.
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FossilOrigin-Name: 35f46a55d866b9a87c1321aab8e0cfe86ccadb93
2014-04-28 10:00:59 +00:00
8ad169abb4
If ENABLE_STAT3 is defined but ENABLE_STAT4 is not, have ANALYZE create and populate the sqlite_stat3 table instead of sqlite_stat4.
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FossilOrigin-Name: cca8bf4372ab7a0258aa5c9397818415c6cf0abf
2013-08-12 20:14:04 +00:00
dd6e1f193e
Add the rowid field to the end of sample records stored in the sqlite_stat4 table.
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FossilOrigin-Name: 3a5e8ab7ddbe1d943b35ef329fe4e5a1bfdb0d9d
2013-08-10 19:08:30 +00:00
f52bb8d385
Begin adding experimental sqlite_stat4 table. This commit is buggy.
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FossilOrigin-Name: 2beea303a1d609cd2ff252412c50b966b9e5e8f1
2013-08-03 20:24:58 +00:00
2acbc0dd78
Add test case for the problem fixed by [127a5b776d].
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FossilOrigin-Name: 65816718b59b286c11d939235a23c7325f25594b
2013-08-01 17:43:35 +00:00
5822d6feb2
Fix test cases for the new EXPLAIN QUERY PLAN format. Add the
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wherecosttest tool. Other fixes to logarithm cost.
FossilOrigin-Name: aa580e368e3c398b8377b80342dfdd906324c248
2013-06-10 23:30:09 +00:00
74e7c8f51f
Purge lingering references to SQLITE_STAT2 from the code and test scripts.
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FossilOrigin-Name: aed2bf7a3c828a7191389b3f8235a9387977b476
2011-10-21 19:06:32 +00:00
d4b0ff9926
Merge the STAT3 changes into trunk.
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FossilOrigin-Name: 774d0842bcce8862f2aac371f1689536ed234a0a
2011-10-03 15:30:33 +00:00
50a1c56a2e
Update some test cases to work with sqlite_stat3 instead of sqlite_stat2.
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FossilOrigin-Name: 2504bcfb0cf14b5ce51db0af1269ac28384714e0
2011-08-15 12:58:23 +00:00
4e50c5ec48
Further testing and bug fixing for sqlite_stat3. Added the Index.avgEq
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field to index statistics. Fixed several problems in the query planner
associated with stat3.
FossilOrigin-Name: 89b2f70884cad0abdf4c66cb64ecddb2820ded74
2011-08-13 19:35:19 +00:00
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
3985479b9d
Change some test cases to account for the new EXPLAIN QUERY PLAN output.
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FossilOrigin-Name: 88a854e18fc6bd619fa8d8a911abff50a9b76b9e
2010-11-15 16:12:58 +00:00
d08640871c
Experimental refactoring of the Pager object state.
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FossilOrigin-Name: 03a240514aa07a22db787d221641253f23933e88
2010-08-02 14:32:52 +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
cda455b7ff
Add a sqlite3_log() call on anonymous constraint failures.
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Fix the output of test cases having to do with improved reprepare reporting.
Fix the VACUUM command to report more helpful error messages when things go
wrong.
FossilOrigin-Name: 69a493182fd77bec91598516ee42c11a6db1d039
2010-02-24 19:23:56 +00:00
8cff69df11
Enhance the OP_Found and OP_NotFound opcodes so that they can accept an
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array of registers as an unpacked record in addition to a record built
using OP_MakeRecord. Use this to avoid OP_MakeRecord calls during IN
expression processing.
FossilOrigin-Name: b9eab885cd2ca1a1633329e7036c125e8dba62c5
2009-11-12 19:59:44 +00:00
c94b859560
Fix cases where modifying bound variables using the clear_bindings() or transfer_bindings() APIs can invalidate a query plan.
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FossilOrigin-Name: e6808c988c9cd7b2db23f18b5fe2177151b6f586
2009-10-20 07:01:24 +00:00
1d2ce4f804
Remove the sqlite3_reoptimize() API. The same functionality is now provided automatically to queries prepared using prepare_v2().
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FossilOrigin-Name: 2c50b3d5aab7cd8cc841d61f8c3b2b34d2f0b54b
2009-10-19 18:11:09 +00:00
d893ed8eea
Fix a problem in the analyze3.test script.
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FossilOrigin-Name: 61174aea74db59f6792e275aa366b7f0e1f2270b
2009-10-16 15:59:35 +00:00
937d0dea4f
Add the experimental sqlite3_reoptimize() API.
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FossilOrigin-Name: 9bd6f3d8864d422fe42074688b191915b27ad8ea
2009-10-15 18:35:38 +00:00
drh