pgsql: Add code to eval_const_expressions() to support

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From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Add code to eval_const_expressions() to support
Date: 2008-05-15 17:37:57
Message-ID: 20080515173757.4685A754C53@cvs.postgresql.org
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Lists: pgsql-committers

Log Message:
-----------
Add code to eval_const_expressions() to support const-simplification of
CoerceViaIO nodes. This improves the ability of the planner to deal with
cases where the node input is a constant. Per bug #4170.

Tags:
----
REL8_3_STABLE

Modified Files:
--------------
pgsql/src/backend/optimizer/util:
clauses.c (r1.254.2.1 -> r1.254.2.2)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c?r1=1.254.2.1&r2=1.254.2.2)