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(parent: ef5842b) | patch
Detect duplicate aggregate calls and evaluate only one copy. This
authorTom Lane <tgl@sss.pgh.pa.us>
Tue, 4 Feb 2003 00:48:23 +0000 (00:48 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Tue, 4 Feb 2003 00:48:23 +0000 (00:48 +0000)
commit85caf1784a318afdd3c4ba66ffd23c0d0af99cd6
tree9b435b860726eb02ec116f723e3dc7f1da3872detree | snapshot
parentef5842b5f718437b504e801258025b188f764380commit | diff
Detect duplicate aggregate calls and evaluate only one copy.  This
speeds up some useful real-world cases like
SELECT x, COUNT(*) FROM t GROUP BY x HAVING COUNT(*) > 100.
src/backend/executor/nodeAgg.c diff | blob | history
PostgreSQL9.0用の同期レプリケーションパッチ
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