CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)svr1(dot)postgresql(dot)org	04/01/05 14:04:39

Modified files:
	src/backend/nodes: outfuncs.c 
	src/backend/optimizer/plan: createplan.c 
	src/backend/optimizer/util: clauses.c pathnode.c 
	src/include/nodes: relation.h 
	src/include/optimizer: clauses.h 

Log message:
	Improve UniquePath logic to detect the case where the input is already
	known unique (eg, it is a SELECT DISTINCT ... subquery), and not do a
	redundant unique-ification step.

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