pgsql-server/src/backend/optimizer/util pathnode.c

CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl@svr1.postgresql.org	04/03/29 15:58:04

Modified files:
	src/backend/optimizer/util: pathnode.c 

Log message:
	Use fuzzy comparison of path costs in add_path(), so that paths with the
	same path keys and nearly equivalent costs will be considered redundant.
	The exact nature of the fuzziness may get adjusted later based on current
	discussions, but no one has shot a hole in the basic idea yet ...