| From: | Tom Lane <tgl(at)hub(dot)org> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql/src backend/optimizer/path/Tag: backend/ ... |
| Date: | 2001-07-31 18:39:13 |
| Message-ID: | 200107311839.f6VIdDA03292@hub.org |
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| Lists: | pgsql-committers |
CVSROOT: /home/projects/pgsql/cvsroot
Module name: pgsql
Changes by: tgl(at)hub(dot)org 01/07/31 14:39:13
Modified files:
src/backend/optimizer/path: Tag: REL7_1_STABLE allpaths.c
src/backend/optimizer/util: Tag: REL7_1_STABLE clauses.c
src/backend/utils/adt: Tag: REL7_1_STABLE ruleutils.c
src/include/optimizer: Tag: REL7_1_STABLE clauses.h
Log message:
Fix optimizer to not try to push WHERE clauses down into a sub-SELECT that
has a DISTINCT ON clause, per bug report from Anthony Wood. While at it,
improve the DISTINCT-ON-clause recognizer routine to not be fooled by out-
of-order DISTINCT lists.
Also, back-patch earlier fix to not push down into sub-SELECT with LIMIT.
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