| From: | tgl(at)postgresql(dot)org (Tom Lane) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Suppress subquery pullup/pushdown when a subquery contains |
| Date: | 2006-08-19 02:48:53 |
| Message-ID: | 20060819024853.9F9239FB3E3@postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Suppress subquery pullup/pushdown when a subquery contains volatile
functions in its targetlist, to avoid introducing multiple evaluations
of volatile functions that textually appear only once. This is a
slightly tighter version of Jaime Casanova's recent patch.
Modified Files:
--------------
pgsql/src/backend/optimizer/path:
allpaths.c (r1.151 -> r1.152)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/path/allpaths.c.diff?r1=1.151&r2=1.152)
pgsql/src/backend/optimizer/prep:
prepjointree.c (r1.42 -> r1.43)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/prep/prepjointree.c.diff?r1=1.42&r2=1.43)
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