pgsql: When building a bitmap scan, must copy the bitmapqualorig

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: When building a bitmap scan, must copy the bitmapqualorig
Date: 2006-01-29 18:55:49
Message-ID: 20060129185549.312999DC9AD@postgresql.org
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Log Message:
-----------
When building a bitmap scan, must copy the bitmapqualorig expression tree
to avoid sharing substructure with the lower-level indexquals. This is
currently only an issue if there are SubPlans in the indexquals, which is
uncommon but not impossible --- see bug #2218 reported by Nicholas Vinen.
We use the same kluge for indexqual vs indexqualorig in the index scans
themselves ... would be nice to clean this up someday.

Modified Files:
--------------
pgsql/src/backend/optimizer/plan:
createplan.c (r1.206 -> r1.207)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/createplan.c.diff?r1=1.206&r2=1.207)

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