pgsql-server/ oc/src/sgml/indexcost.sgml rc/ba ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    03/01/12 17:35:29

Modified files:
    doc/src/sgml   : indexcost.sgml
    src/backend/optimizer/path: costsize.c
    src/backend/optimizer/plan: initsplan.c
    src/backend/optimizer/prep: prepunion.c
    src/backend/optimizer/util: relnode.c
    src/backend/utils/adt: selfuncs.c
    src/include/nodes: relation.h
    src/include/optimizer: cost.h

Log message:
    Revise cost_qual_eval() to compute both startup (one-time) and per-tuple
    costs for expression evaluation, not only per-tuple cost as before.
    This extension is needed in order to deal realistically with hashed or
    materialized sub-selects.