pgsql-server/src backend/optimizer/path/costsi ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    03/07/14 19:35:54

Modified files:
    src/backend/optimizer/path: costsize.c
    src/backend/optimizer/plan: createplan.c
    src/backend/optimizer/util: pathnode.c
    src/include/optimizer: cost.h

Log message:
    Make cost estimates for SubqueryScan more realistic: charge cpu_tuple_cost
    for each row processed, and don't forget the evaluation cost of any
    restriction clauses attached to the node.  Per discussion with Greg Stark.