pgsql: Fix build_minmax_path() to cope if an IS NULL clause turns up in

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Fix build_minmax_path() to cope if an IS NULL clause turns up in
Date: 2007-12-03 22:37:17
Message-ID: 20071203223717.D03E07540F0@cvs.postgresql.org
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Log Message:
-----------
Fix build_minmax_path() to cope if an IS NULL clause turns up in the
indexable-clauses list for a btree index. Formerly it just Asserted that
all such clauses were opclauses, but that's no longer true in 8.3.
Per bug #3796 from Matthias Schoeneich.

Modified Files:
--------------
pgsql/src/backend/optimizer/plan:
planagg.c (r1.34 -> r1.35)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/planagg.c?r1=1.34&r2=1.35)

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