pgsql: Ensure that the result of evaluating a function during

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Ensure that the result of evaluating a function during
Date: 2007-10-11 21:27:49
Message-ID: 20071011212749.B6537753E4C@cvs.postgresql.org
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Log Message:
-----------
Ensure that the result of evaluating a function during constant-expression
simplification gets detoasted before it is incorporated into a Const node.
Otherwise, if an immutable function were to return a TOAST pointer (an
unlikely case, but it can be made to happen), we would end up with a plan
that depends on the continued existence of the out-of-line toast datum.

Modified Files:
--------------
pgsql/src/backend/optimizer/util:
clauses.c (r1.249 -> r1.250)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c?r1=1.249&r2=1.250)

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