From 7c579fa12df0def35192e1e3cfc9ea7ab90bb0cb Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 5 Jun 2001 05:26:05 +0000
Subject: 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).

---
 src/include/optimizer/pathnode.h | 53 +++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 25 deletions(-)

(limited to 'src/include/optimizer/pathnode.h')

diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h
index 85ba6936f48..8979c0d947c 100644
--- a/src/include/optimizer/pathnode.h
+++ b/src/include/optimizer/pathnode.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: pathnode.h,v 1.37 2001/05/20 20:28:20 tgl Exp $
+ * $Id: pathnode.h,v 1.38 2001/06/05 05:26:05 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -26,40 +26,43 @@ extern int compare_fractional_path_costs(Path *path1, Path *path2,
 extern void set_cheapest(RelOptInfo *parent_rel);
 extern void add_path(RelOptInfo *parent_rel, Path *new_path);
 
-extern Path *create_seqscan_path(RelOptInfo *rel);
+extern Path *create_seqscan_path(Query *root, RelOptInfo *rel);
 extern IndexPath *create_index_path(Query *root, RelOptInfo *rel,
 				  IndexOptInfo *index,
 				  List *restriction_clauses,
 				  List *pathkeys,
 				  ScanDirection indexscandir);
-extern TidPath *create_tidscan_path(RelOptInfo *rel, List *tideval);
+extern TidPath *create_tidscan_path(Query *root, RelOptInfo *rel,
+									List *tideval);
 extern AppendPath *create_append_path(RelOptInfo *rel, List *subpaths);
 extern Path *create_subqueryscan_path(RelOptInfo *rel);
 
-extern NestPath *create_nestloop_path(RelOptInfo *joinrel,
-					 JoinType jointype,
-					 Path *outer_path,
-					 Path *inner_path,
-					 List *restrict_clauses,
-					 List *pathkeys);
+extern NestPath *create_nestloop_path(Query *root,
+									  RelOptInfo *joinrel,
+									  JoinType jointype,
+									  Path *outer_path,
+									  Path *inner_path,
+									  List *restrict_clauses,
+									  List *pathkeys);
 
-extern MergePath *create_mergejoin_path(RelOptInfo *joinrel,
-					  JoinType jointype,
-					  Path *outer_path,
-					  Path *inner_path,
-					  List *restrict_clauses,
-					  List *pathkeys,
-					  List *mergeclauses,
-					  List *outersortkeys,
-					  List *innersortkeys);
+extern MergePath *create_mergejoin_path(Query *root,
+										RelOptInfo *joinrel,
+										JoinType jointype,
+										Path *outer_path,
+										Path *inner_path,
+										List *restrict_clauses,
+										List *pathkeys,
+										List *mergeclauses,
+										List *outersortkeys,
+										List *innersortkeys);
 
-extern HashPath *create_hashjoin_path(RelOptInfo *joinrel,
-					 JoinType jointype,
-					 Path *outer_path,
-					 Path *inner_path,
-					 List *restrict_clauses,
-					 List *hashclauses,
-					 Selectivity innerbucketsize);
+extern HashPath *create_hashjoin_path(Query *root,
+									  RelOptInfo *joinrel,
+									  JoinType jointype,
+									  Path *outer_path,
+									  Path *inner_path,
+									  List *restrict_clauses,
+									  List *hashclauses);
 
 /*
  * prototypes for relnode.c
-- 
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