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Change pg_attribute.attnvals to float4, change #ifdef 0 to #if 0, fix aix call to strNcpy, fix pg_super_user_id in pg_dumpall, change pg_database.dtadba from oid to int4.

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This commit is contained in:
Bruce Momjian
1997-08-21 02:28:55 +00:00
parent ac3d7b3146
commit f1edf02cc1
9 changed files with 52 additions and 53 deletions
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47
src/backend/utils/adt/selfuncs.c
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@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.6 1997/04/09 02:20:32 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.7 1997/08/21 02:28:34 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -33,8 +33,6 @@
#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)
@ -43,7 +41,7 @@
*/
#define FunctionalSelectivity(nIndKeys,attNum) (attNum==InvalidAttrNumber)
static int32 getattnvals(Oid relid, AttrNumber attnum);
static float32data getattnvals(Oid relid, AttrNumber attnum);
static void gethilokey(Oid relid, AttrNumber attnum, Oid opid,
char **high, char **low);
@ -58,19 +56,13 @@ eqsel(Oid opid,
char *value,
int32 flag)
{
int32 nvals;
float64 result;
result = (float64) palloc(sizeof(float64data));
if (NONVALUE(attno) || NONVALUE(relid))
*result = 0.1;
else {
nvals = getattnvals(relid, (int) attno);
if (nvals == 0)
*result = 0.0;
else
*result = ((float64data)nvals) / ((float64data)ATTNVALS_SCALE);
}
else
*result = (float64data)getattnvals(relid, (int) attno);
return(result);
}
@ -102,7 +94,7 @@ intltsel(Oid opid,
int32 value,
int32 flag)
{
float64 result;
float64 result;
char *highchar, *lowchar;
long val, high, low, top, bottom;
@ -121,12 +113,15 @@ intltsel(Oid opid,
low = atol(lowchar);
if ((flag & SEL_RIGHT && val < low) ||
(!(flag & SEL_RIGHT) && val > high)) {
int nvals;
float32data nvals;
nvals = getattnvals(relid, (int) attno);
if (nvals == 0)
*result = 1.0 / 3.0;
else
*result = 3.0 * ((float64data)nvals) / ((float64data)ATTNVALS_SCALE);
else {
*result = 3.0 * (float64data)nvals;
if (*result > 1.0)
*result = 1;
}
}else {
bottom = high - low;
if (bottom == 0)
@ -180,7 +175,7 @@ eqjoinsel(Oid opid,
AttrNumber attno2)
{
float64 result;
int32 num1, num2, max;
float32data num1, num2, max;
result = (float64) palloc(sizeof(float64data));
if (NONVALUE(attno1) || NONVALUE(relid1) ||
@ -193,7 +188,7 @@ eqjoinsel(Oid opid,
if (max == 0)
*result = 1.0;
else
*result = ((float64data)max) / ((float64data)ATTNVALS_SCALE);
*result = (float64data)max;
}
return(result);
}
@ -263,11 +258,12 @@ intgtjoinsel(Oid opid,
* more efficient. However, the cast will not work
* for gethilokey which accesses stahikey in struct statistic.
*/
static int32
static float32data
getattnvals(Oid relid, AttrNumber attnum)
{
HeapTuple atp;
int nvals;
float32data nvals;
int32 ntuples;
atp = SearchSysCacheTuple(ATTNUM,
ObjectIdGetDatum(relid),
@ -290,15 +286,10 @@ getattnvals(Oid relid, AttrNumber attnum)
elog(WARN, "getattnvals: no relation tuple %d", relid);
return(0);
}
nvals = ((Form_pg_class) GETSTRUCT(atp))->reltuples;
ntuples = ((Form_pg_class) GETSTRUCT(atp))->reltuples;
/* Look above how nvals is used. - vadim 04/09/97 */
if ( nvals > 0 )
{
double selratio = 1.0 / (double)nvals;
selratio *= (double)ATTNVALS_SCALE;
nvals = (int) ceil (selratio);
}
if ( ntuples > 0 )
nvals = 1.0 / ntuples;
return(nvals);
}