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.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h
index bdcb3a6afa..9b7af6d36f 100644
--- a/src/include/executor/executor.h
+++ b/src/include/executor/executor.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: executor.h,v 1.82 2002/12/13 19:45:56 tgl Exp $
+ * $Id: executor.h,v 1.83 2002/12/14 00:17:59 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -92,8 +92,7 @@ extern Datum ExecEvalExpr(ExprState *expression, ExprContext *econtext,
 extern Datum ExecEvalExprSwitchContext(ExprState *expression, ExprContext *econtext,
 						  bool *isNull, ExprDoneCond *isDone);
 extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
-extern SubPlanExprState *ExecInitExprInitPlan(SubPlanExpr *node,
-											  PlanState *parent);
+extern SubPlanState *ExecInitExprInitPlan(SubPlan *node, PlanState *parent);
 extern bool ExecQual(List *qual, ExprContext *econtext, bool resultForNull);
 extern int	ExecTargetListLength(List *targetlist);
 extern int	ExecCleanTargetListLength(List *targetlist);