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If we're going to expose VariableStatData for contrib modules to use,

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then we should export a reasonable set of the supporting routines too.
This commit is contained in:
Tom Lane 2006-04-27 00:46:59 +00:00
parent f1b3d5b02d
commit a3c1a11fc1
2 changed files with 19 additions and 17 deletions
src
backend/utils/adt
selfuncs.c
include/utils
selfuncs.h

18
src/backend/utils/adt/selfuncs.c

@ -15,7 +15,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.201 2006/04/26 22:32:56 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.202 2006/04/27 00:46:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -111,8 +111,6 @@
#include "utils/syscache.h"
static double mcv_selectivity(VariableStatData *vardata, FmgrInfo *opproc,
Datum constval, double *sumcommonp);
static double ineq_histogram_selectivity(VariableStatData *vardata,
FmgrInfo *opproc, bool isgt,
Datum constval, Oid consttype);
@ -138,12 +136,6 @@ static double convert_one_bytea_to_scalar(unsigned char *value, int valuelen,
int rangelo, int rangehi);
static char *convert_string_datum(Datum value, Oid typid);
static double convert_timevalue_to_scalar(Datum value, Oid typid);
static void get_join_variables(PlannerInfo *root, List *args,
VariableStatData *vardata1,
VariableStatData *vardata2);
static void examine_variable(PlannerInfo *root, Node *node, int varRelid,
VariableStatData *vardata);
static double get_variable_numdistinct(VariableStatData *vardata);
static bool get_variable_maximum(PlannerInfo *root, VariableStatData *vardata,
Oid sortop, Datum *max);
static Selectivity prefix_selectivity(VariableStatData *vardata,
@ -476,7 +468,7 @@ scalarineqsel(PlannerInfo *root, Oid operator, bool isgt,
* total population is returned into *sumcommonp. Zeroes are returned
* if there is no MCV list.
*/
static double
double
mcv_selectivity(VariableStatData *vardata, FmgrInfo *opproc, Datum constval,
double *sumcommonp)
{
@ -3203,7 +3195,7 @@ get_restriction_variable(PlannerInfo *root, List *args, int varRelid,
* get_join_variables
* Apply examine_variable() to each side of a join clause.
*/
static void
void
get_join_variables(PlannerInfo *root, List *args,
VariableStatData *vardata1, VariableStatData *vardata2)
{
@ -3246,7 +3238,7 @@ get_join_variables(PlannerInfo *root, List *args,
*
* Caller is responsible for doing ReleaseVariableStats() before exiting.
*/
static void
void
examine_variable(PlannerInfo *root, Node *node, int varRelid,
VariableStatData *vardata)
{
@ -3429,7 +3421,7 @@ examine_variable(PlannerInfo *root, Node *node, int varRelid,
* NB: be careful to produce an integral result, since callers may compare
* the result to exact integer counts.
*/
static double
double
get_variable_numdistinct(VariableStatData *vardata)
{
double stadistinct;

18
src/include/utils/selfuncs.h

@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.30 2006/04/26 22:33:36 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.31 2006/04/27 00:46:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -97,6 +97,19 @@ typedef enum
/* selfuncs.c */
extern void examine_variable(PlannerInfo *root, Node *node, int varRelid,
VariableStatData *vardata);
extern bool get_restriction_variable(PlannerInfo *root, List *args,
int varRelid,
VariableStatData *vardata, Node **other,
bool *varonleft);
extern void get_join_variables(PlannerInfo *root, List *args,
VariableStatData *vardata1,
VariableStatData *vardata2);
extern double get_variable_numdistinct(VariableStatData *vardata);
extern double mcv_selectivity(VariableStatData *vardata, FmgrInfo *opproc,
Datum constval, double *sumcommonp);
extern Pattern_Prefix_Status pattern_fixed_prefix(Const *patt,
Pattern_Type ptype,
Const **prefix,
@ -154,8 +167,5 @@ extern Selectivity estimate_hash_bucketsize(PlannerInfo *root, Node *hashkey,
extern Datum btcostestimate(PG_FUNCTION_ARGS);
extern Datum hashcostestimate(PG_FUNCTION_ARGS);
extern Datum gistcostestimate(PG_FUNCTION_ARGS);
extern bool get_restriction_variable(PlannerInfo *root, List *args, int varRelid,
VariableStatData *vardata, Node **other,
bool *varonleft);
#endif /* SELFUNCS_H */