git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c

index 1b37f38e641b95abdca919e4e5ca7170bafc8e12..17817c0ef3e9a15366ffb31d5597eca522728a34 100644 (file)

--- a/src/backend/utils/adt/selfuncs.c

+++ b/src/backend/utils/adt/selfuncs.c

*

*

* IDENTIFICATION

- * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.201 2006年04月26日 22:32:56 momjian Exp $

+ * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.202 2006年04月27日 00:46:58 tgl Exp $

*

*-------------------------------------------------------------------------

*/

#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);

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,

* 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)

{

* 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)

{

*

* Caller is responsible for doing ReleaseVariableStats() before exiting.

*/

-static void

+void

examine_variable(PlannerInfo *root, Node *node, int varRelid,

VariableStatData *vardata)

{

* 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;

diff --git a/src/include/utils/selfuncs.h b/src/include/utils/selfuncs.h

index ad484d8b49227c7ffa104004175357f080a6afa5..9ba11c99ae56445b689062be98483febd6ee6a47 100644 (file)

--- a/src/include/utils/selfuncs.h

+++ b/src/include/utils/selfuncs.h

* 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年04月26日 22:33:36 momjian Exp $

+ * $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.31 2006年04月27日 00:46:59 tgl Exp $

*

*-------------------------------------------------------------------------

*/

/* 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,

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 */