From 8449df8a67864b5009fa078cf21884461f4ed4e6 Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Sun, 23 Jan 2000 02:07:00 +0000
Subject: First cut at unifying regular selectivity estimation with indexscan
 selectivity estimation wasn't right.  This is better...

---
 src/include/optimizer/cost.h | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

(limited to 'src/include/optimizer')

diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h
index 9c16fc8fea6..fd6daee1b1f 100644
--- a/src/include/optimizer/cost.h
+++ b/src/include/optimizer/cost.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: cost.h,v 1.26 2000/01/22 23:50:26 tgl Exp $
+ * $Id: cost.h,v 1.27 2000/01/23 02:06:57 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -15,15 +15,16 @@
 
 #include "nodes/relation.h"
 
+/* defaults for costsize.c's Cost parameters */
+/* NB: cost-estimation code should use the variables, not the constants! */
+#define CPU_PAGE_WEIGHT  0.033
+#define CPU_INDEX_PAGE_WEIGHT  0.017
+
 /* defaults for function attributes used for expensive function calculations */
 #define BYTE_PCT 100
 #define PERBYTE_CPU 0
 #define PERCALL_CPU 0
 #define OUTIN_RATIO 100
-/* defaults for costsize.c's Cost parameters */
-/* NB: cost-estimation code should use the variables, not the constants! */
-#define CPU_PAGE_WEIGHT  0.033
-#define CPU_INDEX_PAGE_WEIGHT  0.017
 
 
 /*
@@ -61,8 +62,14 @@ extern void set_joinrel_rows_width(Query *root, RelOptInfo *rel,
  * prototypes for clausesel.c
  *	  routines to compute clause selectivities
  */
-extern Selectivity restrictlist_selec(Query *root, List *restrictinfo_list);
-extern Selectivity clauselist_selec(Query *root, List *clauses);
-extern Selectivity compute_clause_selec(Query *root, Node *clause);
+extern Selectivity restrictlist_selectivity(Query *root,
+											List *restrictinfo_list,
+											int varRelid);
+extern Selectivity clauselist_selectivity(Query *root,
+										  List *clauses,
+										  int varRelid);
+extern Selectivity clause_selectivity(Query *root,
+									  Node *clause,
+									  int varRelid);
 
 #endif	 /* COST_H */
-- 
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