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pgsql-server/src/backend/optimizer/path indxpath.c

From: tgl(at)svr1(dot)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql-server/src/backend/optimizer/path indxpath.c
Date: 2004-03-07 05:43:53
Message-ID: 20040307054353.D4B0CD1D5D9@svr1.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)svr1(dot)postgresql(dot)org	04/03/07 01:43:53

Modified files:
	src/backend/optimizer/path: indxpath.c 

Log message:
	When testing usability of a partial index, recognize that an index
	predicate of the form 'foo IS NOT NULL' is implied by a WHERE clause
	that uses 'foo' in any strict operator or function.  Per suggestion
	and preliminary implementation by John Siracusa; some further hacking
	by moi.


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