Clean up plantree representation of SubPlan-s --- SubLink does not appear

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 2d8d66628a8ac49deba8483608135b3c358ae729

Author: Tom Lane <tgl@sss.pgh.pa.us>

Date: 2002-12-14T00:17:59Z

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.

Files

Path	Change	+/−
src/backend/commands/explain.c	modified	+5 −5
src/backend/executor/execAmi.c	modified	+3 −3
src/backend/executor/execProcnode.c	modified	+8 −8
src/backend/executor/execQual.c	modified	+17 −28
src/backend/executor/nodeSubplan.c	modified	+23 −24
src/backend/nodes/copyfuncs.c	modified	+10 −9
src/backend/nodes/equalfuncs.c	modified	+7 −6
src/backend/nodes/outfuncs.c	modified	+8 −7
src/backend/nodes/readfuncs.c	modified	+2 −2
src/backend/optimizer/path/costsize.c	modified	+6 −6
src/backend/optimizer/plan/planner.c	modified	+3 −3
src/backend/optimizer/plan/setrefs.c	modified	+6 −6
src/backend/optimizer/plan/subselect.c	modified	+121 −106
src/backend/optimizer/prep/prepunion.c	modified	+3 −3
src/backend/optimizer/util/clauses.c	modified	+54 −67
src/backend/optimizer/util/var.c	modified	+7 −7
src/backend/utils/adt/ruleutils.c	modified	+2 −2
src/include/executor/executor.h	modified	+2 −3
src/include/executor/nodeSubplan.h	modified	+6 −6
src/include/nodes/execnodes.h	modified	+7 −10
src/include/nodes/nodes.h	modified	+3 −3
src/include/nodes/params.h	modified	+3 −3
src/include/nodes/primnodes.h	modified	+49 −39
src/include/optimizer/clauses.h	modified	+2 −2