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(parent: 7ebbc81) | patch
Save another little bit of planner overhead on simple queries, by having
authorTom Lane <tgl@sss.pgh.pa.us>
Sat, 24 Nov 2007 19:08:51 +0000 (19:08 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Sat, 24 Nov 2007 19:08:51 +0000 (19:08 +0000)
commitaca467b9b343dccd52a8c8da74ffcf70559fb468
tree5a5f5a1300989f40f4795992acbbb7fe6be10b0atree | snapshot
parent7ebbc815d994393c4315ef02fe66622e0089f972commit | diff
Save another little bit of planner overhead on simple queries, by having
clauselist_selectivity skip some analysis that's useless when there's only
one clause in the given list.  Actually this can win even for not-so-simple
queries, because we also apply clauselist_selectivity to sublists such as the
quals matching an index; which are likely to have only a single entry even
when the total query is quite complicated.
src/backend/optimizer/path/clausesel.c diff | blob | history
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