First cut at making indexscan cost estimates depend on correlation

between index order and table order.

3 files changed, 11 insertions, 7 deletions

diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index d03d472043f..7d7acf96f73 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.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: pg_proc.h,v 1.184 2001/03/22 04:00:39 momjian Exp $
+ * $Id: pg_proc.h,v 1.185 2001/05/09 23:13:35 tgl Exp $
  *
  * NOTES
  *	  The script catalog/genbki.sh reads this file and generates .bki
@@ -210,9 +210,9 @@ DESCR("not equal");
 DATA(insert OID =  89 (  version		   PGUID 12 f t f t 0 f 25 "" 100 0 0 100 pgsql_version - ));
 DESCR("PostgreSQL version string");
 
-DATA(insert OID = 1265 (  rtcostestimate   PGUID 12 f t f t 7 f 0 "0 0 0 0 0 0 0" 100 0 0 100  rtcostestimate - ));
+DATA(insert OID = 1265 (  rtcostestimate   PGUID 12 f t f t 8 f 0 "0 0 0 0 0 0 0 0" 100 0 0 100  rtcostestimate - ));
 DESCR("r-tree cost estimator");
-DATA(insert OID = 1268 (  btcostestimate   PGUID 12 f t f t 7 f 0 "0 0 0 0 0 0 0" 100 0 0 100  btcostestimate - ));
+DATA(insert OID = 1268 (  btcostestimate   PGUID 12 f t f t 8 f 0 "0 0 0 0 0 0 0 0" 100 0 0 100  btcostestimate - ));
 DESCR("btree cost estimator");
 
 /* OIDS 100 - 199 */
@@ -789,7 +789,7 @@ DESCR("convert name to char()");
 DATA(insert OID =  409 (  name			   PGUID 12 f t t t 1 f 19 "1042" 100 0 0 100	bpchar_name - ));
 DESCR("convert char() to name");
 
-DATA(insert OID =  438 (  hashcostestimate PGUID 12 f t f t 7 f 0 "0 0 0 0 0 0 0" 100 0 0 100  hashcostestimate - ));
+DATA(insert OID =  438 (  hashcostestimate PGUID 12 f t f t 8 f 0 "0 0 0 0 0 0 0 0" 100 0 0 100  hashcostestimate - ));
 DESCR("hash index cost estimator");
 
 DATA(insert OID = 440 (  hashgettuple	   PGUID 12 f t f t 2 f 23 "0 0" 100 0 0 100  hashgettuple - ));
@@ -1014,7 +1014,7 @@ DESCR("larger of two");
 DATA(insert OID = 771 (  int2smaller	   PGUID 12 f t t t 2 f 21 "21 21" 100 0 0 100	int2smaller - ));
 DESCR("smaller of two");
 
-DATA(insert OID = 772 (  gistcostestimate  PGUID 12 f t f t 7 f 0 "0 0 0 0 0 0 0" 100 0 0 100  gistcostestimate - ));
+DATA(insert OID = 772 (  gistcostestimate  PGUID 12 f t f t 8 f 0 "0 0 0 0 0 0 0 0" 100 0 0 100  gistcostestimate - ));
 DESCR("gist cost estimator");
 DATA(insert OID = 774 (  gistgettuple	   PGUID 12 f t f t 2 f 23 "0 0" 100 0 0 100  gistgettuple - ));
 DESCR("gist(internal)");
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);
diff --git a/src/include/utils/lsyscache.h b/src/include/utils/lsyscache.h
index 3f18a4aea63..719f68a873f 100644
--- a/src/include/utils/lsyscache.h
+++ b/src/include/utils/lsyscache.h
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: lsyscache.h,v 1.32 2001/05/09 00:35:09 tgl Exp $
+ * $Id: lsyscache.h,v 1.33 2001/05/09 23:13:37 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -21,6 +21,8 @@ extern AttrNumber get_attnum(Oid relid, char *attname);
 extern Oid	get_atttype(Oid relid, AttrNumber attnum);
 extern bool get_attisset(Oid relid, char *attname);
 extern int32 get_atttypmod(Oid relid, AttrNumber attnum);
+extern void get_atttypetypmod(Oid relid, AttrNumber attnum,
+							  Oid *typid, int32 *typmod);
 extern RegProcedure get_opcode(Oid opno);
 extern char *get_opname(Oid opno);
 extern bool op_mergejoinable(Oid opno, Oid ltype, Oid rtype,