| From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Don't try to remove duplicate OR-subclauses in |
| Date: | 2005-10-13 00:06:47 |
| Message-ID: | 20051013000647.0FE13D8178@svr1.postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Don't try to remove duplicate OR-subclauses in create_bitmap_subplan and
make_restrictinfo_from_bitmapqual. The likelihood of finding duplicates
seems much less than in the AND-subclause case, and the cost much higher,
because OR lists with hundreds or even thousands of subclauses are not
uncommon. Per discussion with Ilia Kantor and andrew(at)supernews(dot)
Modified Files:
--------------
pgsql/src/backend/optimizer/plan:
createplan.c (r1.199 -> r1.200)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/createplan.c.diff?r1=1.199&r2=1.200)
pgsql/src/backend/optimizer/util:
restrictinfo.c (r1.39 -> r1.40)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/restrictinfo.c.diff?r1=1.39&r2=1.40)
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