Further work on making use of new statistics in planner. Adjust APIs

of costsize.c routines to pass Query root, so that costsize can figure
more things out by itself and not be so dependent on its callers to tell
it everything it needs to know.  Use selectivity of hash or merge clause
to estimate number of tuples processed internally in these joins
(this is more useful than it would've been before, since eqjoinsel is
somewhat more accurate than before).

1 files changed, 5 insertions, 4 deletions

diff --git a/src/include/optimizer/planmain.h b/src/include/optimizer/planmain.h
index 75b05fa2781..974dd9a4572 100644
--- a/src/include/optimizer/planmain.h
+++ b/src/include/optimizer/planmain.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: planmain.h,v 1.50 2001/03/22 04:00:55 momjian Exp $
+ * $Id: planmain.h,v 1.51 2001/06/05 05:26:05 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -29,9 +29,10 @@ extern Plan *create_plan(Query *root, Path *best_path);
 extern SubqueryScan *make_subqueryscan(List *qptlist, List *qpqual,
 				  Index scanrelid, Plan *subplan);
 extern Append *make_append(List *appendplans, bool isTarget, List *tlist);
-extern Sort *make_sort(List *tlist, Plan *lefttree, int keycount);
-extern Sort *make_sort_from_pathkeys(List *tlist, Plan *lefttree,
-						List *pathkeys);
+extern Sort *make_sort(Query *root, List *tlist,
+					   Plan *lefttree, int keycount);
+extern Sort *make_sort_from_pathkeys(Query *root, List *tlist,
+									 Plan *lefttree, List *pathkeys);
 extern Agg *make_agg(List *tlist, List *qual, Plan *lefttree);
 extern Group *make_group(List *tlist, bool tuplePerGroup, int ngrp,
 		   AttrNumber *grpColIdx, Plan *lefttree);