pgsql-server/src backend/commands/explain.c ba ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/12/13 19:17:59

Modified files:
    src/backend/commands: explain.c
    src/backend/executor: execAmi.c execProcnode.c execQual.c
                          nodeSubplan.c
    src/backend/nodes: copyfuncs.c equalfuncs.c outfuncs.c
                       readfuncs.c
    src/backend/optimizer/path: costsize.c
    src/backend/optimizer/plan: planner.c setrefs.c subselect.c
    src/backend/optimizer/prep: prepunion.c
    src/backend/optimizer/util: clauses.c var.c
    src/backend/utils/adt: ruleutils.c
    src/include/executor: executor.h nodeSubplan.h
    src/include/nodes: execnodes.h nodes.h params.h primnodes.h
    src/include/optimizer: clauses.h

Log message:
    Clean up plantree representation of SubPlan-s --- SubLink does not appear
    in the planned representation of a subplan at all any more, only SubPlan.
    This means subselect.c doesn't scribble on its input anymore, which seems
    like a good thing; and there are no longer three different possible
    interpretations of a SubLink.  Simplify node naming and improve comments
    in primnodes.h.  No change to stored rules, though.