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pgsql: Be a little smarter about qual handling for semi-joins: a qual

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Be a little smarter about qual handling for semi-joins: a qual
Date: 2008-10-25 19:51:32
Message-ID: 20081025195132.8D46B7545A4@cvs.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Be a little smarter about qual handling for semi-joins: a qual that mentions
only the outer side can be pushed down rather than having to be evaluated
at the join.

Modified Files:
--------------
    pgsql/src/backend/optimizer/plan:
        initsplan.c (r1.143 -> r1.144)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/initsplan.c?r1=1.143&r2=1.144)

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Subject: pgsql: Better solution to the IN-list issue: instead of having an
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Subject: pgsql: Add a heuristic to transformAExprIn() to make it prefer expanding

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