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.