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Revise handling of index-type-specific indexscan cost estimation, per

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pghackers discussion of 5-Jan-2000.  The amopselect and amopnpages
estimators are gone, and in their place is a per-AM amcostestimate
procedure (linked to from pg_am, not pg_amop).
This commit is contained in:
Tom Lane
2000-01-22 23:50:30 +00:00
parent 78845177bb
commit 71ed7eb494
30 changed files with 502 additions and 1113 deletions
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30
src/include/utils/builtins.h
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@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: builtins.h,v 1.96 2000/01/22 14:20:55 petere Exp $
* $Id: builtins.h,v 1.97 2000/01/22 23:50:27 tgl Exp $
*
* NOTES
* This should normally only be included by fmgr.h.
@ -22,6 +22,8 @@
#ifndef BUILTINS_H
#define BUILTINS_H
#include "access/heapam.h" /* for HeapTuple */
#include "nodes/relation.h" /* for amcostestimate parameters */
#include "storage/itemptr.h"
#include "utils/array.h"
#include "utils/datetime.h"
@ -30,7 +32,6 @@
#include "utils/int8.h"
#include "utils/nabstime.h"
#include "utils/numeric.h"
#include "access/heapam.h" /* for HeapTuple */
/*
* Defined in adt/
@ -394,14 +395,23 @@ extern float64 eqjoinsel(Oid opid, Oid relid1, AttrNumber attno1, Oid relid2, At
extern float64 neqjoinsel(Oid opid, Oid relid1, AttrNumber attno1, Oid relid2, AttrNumber attno2);
extern float64 intltjoinsel(Oid opid, Oid relid1, AttrNumber attno1, Oid relid2, AttrNumber attno2);
extern float64 intgtjoinsel(Oid opid, Oid relid1, AttrNumber attno1, Oid relid2, AttrNumber attno2);
extern float64 btreesel(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 btreenpage(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 hashsel(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 hashnpage(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 rtsel(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 rtnpage(Oid operatorOid, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 gistsel(Oid operatorObjectId, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern float64 gistnpage(Oid operatorObjectId, Oid indrelid, AttrNumber attributeNumber, char *constValue, int32 constFlag, int32 nIndexKeys, Oid indexrelid);
extern void btcostestimate(Query *root, RelOptInfo *rel,
IndexOptInfo *index, List *indexQuals,
Cost *indexAccessCost,
Selectivity *indexSelectivity);
extern void rtcostestimate(Query *root, RelOptInfo *rel,
IndexOptInfo *index, List *indexQuals,
Cost *indexAccessCost,
Selectivity *indexSelectivity);
extern void hashcostestimate(Query *root, RelOptInfo *rel,
IndexOptInfo *index, List *indexQuals,
Cost *indexAccessCost,
Selectivity *indexSelectivity);
extern void gistcostestimate(Query *root, RelOptInfo *rel,
IndexOptInfo *index, List *indexQuals,
Cost *indexAccessCost,
Selectivity *indexSelectivity);
/* tid.c */
extern ItemPointer tidin(const char *str);