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First cut at making indexscan cost estimates depend on correlation

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between index order and table order.
This commit is contained in:
Tom Lane
2001-05-09 23:13:37 +00:00
parent e02033572d
commit c23bc6fbb0
8 changed files with 317 additions and 88 deletions
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4
src/include/utils/lsyscache.h
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@ -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,