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(parent: 40055db) | patch
Make EXPLAIN results for Append, Group, Agg, Unique nodes more plausible.
authorTom Lane <tgl@sss.pgh.pa.us>
Thu, 3 Feb 2000 06:12:19 +0000 (06:12 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Thu, 3 Feb 2000 06:12:19 +0000 (06:12 +0000)
commitd24ef0d08fd278bbaa130329ff08de76f980b5aa
treebf2b37a1a5324f74d2c971685f38a13a16dc3bddtree | snapshot
parent40055db1eb9db0518119bdf2bfedde5c31b1f70dcommit | diff
Make EXPLAIN results for Append, Group, Agg, Unique nodes more plausible.
Group and Unique use an arbitrary assumption that there will be about
10% as many groups as input tuples --- perhaps someday we can refine this.
src/backend/optimizer/plan/createplan.c diff | blob | history
src/backend/optimizer/prep/prepunion.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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