| From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Tweak nodeBitmapAnd to stop evaluating sub-plan scans if it finds |
| Date: | 2005-08-28 22:47:20 |
| Message-ID: | 20050828224720.F37E7D8033@svr1.postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Tweak nodeBitmapAnd to stop evaluating sub-plan scans if it finds it's
got an empty bitmap after any step; the remaining subplans can no longer
affect the result. Per a suggestion from Ilia Kantor.
Modified Files:
--------------
pgsql/src/backend/executor:
nodeBitmapAnd.c (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapAnd.c.diff?r1=1.2&r2=1.3)
pgsql/src/backend/nodes:
tidbitmap.c (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/nodes/tidbitmap.c.diff?r1=1.5&r2=1.6)
pgsql/src/backend/optimizer/path:
indxpath.c (r1.187 -> r1.188)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/path/indxpath.c.diff?r1=1.187&r2=1.188)
pgsql/src/include/nodes:
tidbitmap.h (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/tidbitmap.h.diff?r1=1.1&r2=1.2)
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