First cut at making indexscan cost estimates depend on correlation

between index order and table order.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/include/optimizer/var.h b/src/include/optimizer/var.h
index 45048133eb0..4cad677c7ce 100644
--- a/src/include/optimizer/var.h
+++ b/src/include/optimizer/var.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: var.h,v 1.13 2001/04/18 20:42:55 tgl Exp $
+ * $Id: var.h,v 1.14 2001/05/09 23:13:36 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -17,6 +17,8 @@
 #include "nodes/primnodes.h"
 
 extern List *pull_varnos(Node *node);
+extern bool contain_var_reference(Node *node, int varno, int varattno,
+								  int levelsup);
 extern bool contain_whole_tuple_var(Node *node, int varno, int levelsup);
 extern bool contain_var_clause(Node *node);
 extern List *pull_var_clause(Node *node, bool includeUpperVars);