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pgsql: Make constant-folding produce sane output for

From: tgl(at)svr1(dot)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Make constant-folding produce sane output for
Date: 2005-04-10 20:57:45
Message-ID: 20050410205745.DC8465353C@svr1.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Make constant-folding produce sane output for COALESCE(NULL,NULL),
that is a plain NULL and not a COALESCE with no inputs.  Fixes crash
reported by Michael Williamson.

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
    pgsql/src/backend/optimizer/util:
        clauses.c (r1.186.4.2 -> r1.186.4.3)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c.diff?r1=1.186.4.2&r2=1.186.4.3)

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