*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
#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;
* 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 $
*
*-------------------------------------------------------------------------
*/
/* 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 */