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From: tgl(at)svr1(dot)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql-server/src backend/nodes/outfuncs.c back ...
Date: 2004-01-05 23:39:54
Message-ID: 20040105233954.A5B41D1B513@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	04/01/05 19:39:54

Modified files:
	src/backend/nodes: outfuncs.c 
	src/backend/optimizer/path: costsize.c indxpath.c orindxpath.c 
	src/backend/optimizer/plan: createplan.c 
	src/backend/optimizer/util: pathnode.c restrictinfo.c 
	src/backend/utils/adt: selfuncs.c 
	src/include/nodes: relation.h 
	src/include/optimizer: paths.h restrictinfo.h 

Log message:
	Adjust indexscan planning logic to keep RestrictInfo nodes associated
	with index qual clauses in the Path representation.  This saves a little
	work during createplan and (probably more importantly) allows reuse of
	cached selectivity estimates during indexscan planning.  Also fix latent
	bug: wrong plan would have been generated for a 'special operator' used
	in a nestloop-inner-indexscan join qual, because the special operator
	would not have gotten into the list of quals to recheck.  This bug is
	only latent because at present the special-operator code could never
	trigger on a join qual, but sooner or later someone will want to do it.


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