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.

Modified Files:
--------------
    pgsql/src/backend/optimizer/util:
        clauses.c (r1.193 -> r1.194)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c.diff?r1=1.193&r2=1.194)

pgsql-committers by date

Next:	From: Tom Lane	Date: 2005-04-10 20:57:45
	Subject: pgsql: Make constant-folding produce sane output for
Previous:	From: Tom Lane	Date: 2005-04-10 19:50:08
	Subject: pgsql: Split out into a separate function the code in grouping_planner()