drh
02ff747bc0
The OP_ResultRow opcode releases the SCopy dependences on all its registers,
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as the values in those registers will not be reused.
FossilOrigin-Name: 1dc83c5d54ca2890112e735e336c209adb8d067d2f647e9f8ae5d58f84a52461
2019-12-31 12:18:24 +00:00
drh
0d950af311
Fix the likely(), unlikely(), and likelihood() functions so that they have
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no affinity, just like any other function.
Ticket [7e07a3dbf5a8cd26]
FossilOrigin-Name: 44578865fa7baf9760e355691ca9ce753295aaba7a4ee0bba29d4f85d9335bab
2019-08-22 16:38:42 +00:00
drh
b3f0276b9e
Fix test cases so that they work with the new EXPLAIN QUERY PLAN output
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format. Only some of the cases have been fixed. This is an incremental
check-in.
FossilOrigin-Name: 5f0e803e33aa557865d5fc830d9202d628de9a94c9757058ca48f1a560702cd3
2018-05-02 18:00:17 +00:00
drh
5f02ab0976
Make sure that the likelihood() function does not mess up generation of
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result-set code when it is used (inappropropriately) in a result-set
expression.
FossilOrigin-Name: 7cdbae625eb029538a693d2bebec465a6f65fb90
2015-06-20 13:18:34 +00:00
drh
606f2344e9
Pervent the likelihood() function from moving ON clause terms of a LEFT JOIN
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into the WHERE clause.
Fix for ticket [5f60b11fc8e23490e2]
FossilOrigin-Name: ed96e14adce4a4f94cc6838c46bc97937c4cb72a
2015-06-18 14:32:51 +00:00
drh
03202a97f8
Add the likely() function for symmetry with unlikely(). The likely(X)
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function means the same thing as likelihood(X,0.9375).
FossilOrigin-Name: 38965484199153e3e5b999f5196c1d66e5296f60
2014-06-17 16:11:28 +00:00
dan
8ad1d8ba38
If the user provides likelihood() data for a WHERE clause term used as part of an index key, have the planner use it when calculating the expected number of rows visited by the loop.
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FossilOrigin-Name: c51efaa5d29ee0a91b9e6a83a8dd82530670811a
2014-04-25 20:22:45 +00:00
dan
aa9933c115
Changes to the way the planner calculates the costs of various table and index scans. Some test cases still failing.
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FossilOrigin-Name: c5a6ec0a880652dc8f4593d9f7acd58ddc3dc5f3
2014-04-24 20:04:49 +00:00
drh
c438df1be0
Use OP_Copy instead of OP_SCopy when moving results out of a subquery,
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to prevent the subquery results from changing out from under the outer
query. Fix for ticket [1e64dd782a126f48d78].
FossilOrigin-Name: d5513dfa23baa0b0a095aaf17d19aacd30dcef61
2014-04-03 16:29:31 +00:00
drh
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
drh
7d9e7d8287
Improvements to likelihood processing so that commuting an unindexed term in
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the WHERE clause does not change the query plan.
FossilOrigin-Name: 6e6bded055cdbc902731687c86d92c39a3ba5904
2013-09-11 17:39:09 +00:00
drh
09328c00d6
Additional unlikely() test cases. Logic tweaks to support test coverage.
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FossilOrigin-Name: 5d00cce74a7aefaf30022ae971ab1e0451e0ad6e
2013-09-11 14:34:58 +00:00
drh
aae0f9e462
Change the name of the two-argument unlikely() function to likelihood().
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Add test cases.
FossilOrigin-Name: 29a359b8d7f90e6fa2b28ce2a112284fd3870494
2013-09-11 11:38:58 +00:00
