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Add attribute optimization statistics.

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This commit is contained in:
Bruce Momjian 1997-02-07 16:24:12 +00:00
parent 4c0faba0fe
commit 2300ac0dc4
7 changed files with 580 additions and 224 deletions
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715
src/backend/commands/vacuum.c
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File diff suppressed because it is too large Load diff

6
src/backend/parser/analyze.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.20 1997/01/22 01:42:54 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.21 1997/02/07 16:22:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -1486,7 +1486,7 @@ any_ordering_op(int restype)
Operator order_op;
Oid order_opid;
order_op = oper("<",restype,restype);
order_op = oper("<",restype,restype,false);
order_opid = oprid(order_op);
return order_opid;
@ -1554,7 +1554,7 @@ transformSortClause(ParseState *pstate,
sortcl->resdom = resdom = restarget->resdom;
sortcl->opoid = oprid(oper(sortby->useOp,
resdom->restype,
resdom->restype));
resdom->restype,false));
if (sortlist == NIL) {
s = sortlist = lcons(sortcl, NIL);
}else {

8
src/backend/parser/catalog_utils.c
View file

@ -6,7 +6,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/catalog_utils.c,v 1.15 1997/01/22 01:43:08 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/catalog_utils.c,v 1.16 1997/02/07 16:23:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -473,7 +473,7 @@ binary_oper_select_candidate(Oid arg1,
/* Given operator, types of arg1, and arg2, return oper struct */
/* arg1, arg2 --typeids */
Operator
oper(char *op, Oid arg1, Oid arg2)
oper(char *op, Oid arg1, Oid arg2, bool noWarnings)
{
HeapTuple tup;
CandidateList candidates;
@ -492,6 +492,7 @@ oper(char *op, Oid arg1, Oid arg2)
/*
* no operators of the desired types found
*/
if (!noWarnings)
op_error(op, arg1, arg2);
return(NULL);
} else if (ncandidates == 1) {
@ -523,11 +524,12 @@ oper(char *op, Oid arg1, Oid arg2)
/* we chose none of them */
tp1 = get_id_type(arg1);
tp2 = get_id_type(arg2);
if (!noWarnings) {
elog(NOTICE, "there is more than one operator %s for types", op);
elog(NOTICE, "%s and %s. You will have to retype this query",
tname(tp1), tname(tp2));
elog(WARN, "using an explicit cast");
}
return(NULL);
}
}

6
src/backend/parser/parse_query.c
View file

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/parse_query.c,v 1.12 1997/01/22 01:43:19 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/parse_query.c,v 1.13 1997/02/07 16:23:21 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -352,7 +352,7 @@ make_op(char *opname, Node *ltree, Node *rtree)
/* right operator */
ltypeId = (ltree==NULL) ? UNKNOWNOID : exprType(ltree);
temp = right_oper(opname, ltypeId);
temp = oper(opname, ltypeId, rtypeId, false);
opform = (OperatorTupleForm) GETSTRUCT(temp);
left = make_operand(opname, ltree, ltypeId, opform->oprleft);
right = NULL;
@ -411,7 +411,7 @@ make_op(char *opname, Node *ltree, Node *rtree)
((Const *)ltree)->constbyval = tbyval(newtype);
}
temp = oper(opname, ltypeId, rtypeId);
temp = oper(opname, ltypeId, rtypeId, false);
opform = (OperatorTupleForm) GETSTRUCT(temp);
left = make_operand(opname, ltree, ltypeId, opform->oprleft);
right = make_operand(opname, rtree, rtypeId, opform->oprright);

9
src/backend/utils/adt/selfuncs.c
View file

@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.4 1996/11/03 06:53:08 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.5 1997/02/07 16:23:39 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -33,6 +33,7 @@
#include "utils/lsyscache.h" /* for get_oprrest() */
#include "catalog/pg_statistic.h"
#include "commands/vacuum.h" /* for ATTNVALS_SCALE */
/* N is not a valid var/constant or relation id */
#define NONVALUE(N) ((N) == -1)
@ -68,7 +69,7 @@ eqsel(Oid opid,
if (nvals == 0)
*result = 0.0;
else
*result = 1.0 / nvals;
*result = ((float64data)nvals) / ((float64data)ATTNVALS_SCALE);
}
return(result);
}
@ -125,7 +126,7 @@ intltsel(Oid opid,
if (nvals == 0)
*result = 1.0 / 3.0;
else
*result = 3.0 / nvals;
*result = 3.0 * ((float64data)nvals) / ((float64data)ATTNVALS_SCALE);
}else {
bottom = high - low;
if (bottom == 0)
@ -192,7 +193,7 @@ eqjoinsel(Oid opid,
if (max == 0)
*result = 1.0;
else
*result = 1.0 / max;
*result = ((float64data)max) / ((float64data)ATTNVALS_SCALE);
}
return(result);
}

40
src/include/commands/vacuum.h
View file

@ -6,13 +6,16 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: vacuum.h,v 1.5 1997/01/13 03:44:54 momjian Exp $
* $Id: vacuum.h,v 1.6 1997/02/07 16:23:57 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef VACUUM_H
#define VACUUM_H
#include <access/funcindex.h>
#include <catalog/pg_index.h>
typedef struct VAttListData {
int val_dummy;
struct VAttListData *val_next;
@ -38,23 +41,46 @@ typedef struct VPageListData {
typedef VPageListData *VPageList;
typedef struct {
FuncIndexInfo finfo;
FuncIndexInfo *finfoP;
IndexTupleForm tform;
int natts;
} IndDesc;
typedef struct {
AttributeTupleForm attr;
Datum best, guess1, guess2, max, min;
int16 best_len, guess1_len, guess2_len, max_len, min_len;
int32 best_cnt, guess1_cnt, guess1_hits, guess2_hits, null_cnt,nonnull_cnt;
int32 max_cnt, min_cnt;
regproc cmpeq, cmplt, cmpgt, outfunc;
bool initialized;
} VacAttrStats;
typedef struct VRelListData {
Oid vrl_relid;
VAttList vrl_attlist;
int vrl_ntups;
int vrl_npages;
Size vrl_min_tlen;
Size vrl_max_tlen;
bool vrl_hasindex;
struct VRelListData *vrl_next;
} VRelListData;
typedef VRelListData *VRelList;
typedef struct VRelStats {
Oid relid;
int ntups;
int npages;
Size min_tlen;
Size max_tlen;
bool hasindex;
int natts;
VacAttrStats *vacattrstats;
} VRelStats;
extern bool VacuumRunning;
extern void vc_abort(void);
extern void vacuum(char *vacrel, bool verbose);
#define ATTNVALS_SCALE 1000000000 /* XXX so it can act as a float4 */
#endif /* VACUUM_H */

4
src/include/parser/catalog_utils.h
View file

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: catalog_utils.h,v 1.7 1997/01/22 01:44:02 momjian Exp $
* $Id: catalog_utils.h,v 1.8 1997/02/07 16:24:12 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -31,7 +31,7 @@ extern bool tbyval(Type t);
extern char *tname(Type t);
extern int tbyvalue(Type t);
extern Oid oprid(Operator op);
extern Operator oper(char *op, Oid arg1, Oid arg2);
extern Operator oper(char *op, Oid arg1, Oid arg2, bool noWarnings);
extern Operator right_oper(char *op, Oid arg);
extern Operator left_oper(char *op, Oid arg);
extern int varattno(Relation rd, char *a);