psql:ltree.sql:7: NOTICE: type "ltree" is not yet defined
DETAIL: Creating a shell type definition.
psql:ltree.sql:12: NOTICE: argument type ltree is only a shell
-psql:ltree.sql:299: NOTICE: type "lquery" is not yet defined
+psql:ltree.sql:304: NOTICE: type "lquery" is not yet defined
DETAIL: Creating a shell type definition.
-psql:ltree.sql:304: NOTICE: argument type lquery is only a shell
-psql:ltree.sql:410: NOTICE: type "ltxtquery" is not yet defined
+psql:ltree.sql:309: NOTICE: argument type lquery is only a shell
+psql:ltree.sql:415: NOTICE: type "ltxtquery" is not yet defined
DETAIL: Creating a shell type definition.
-psql:ltree.sql:415: NOTICE: argument type ltxtquery is only a shell
-psql:ltree.sql:477: NOTICE: type "ltree_gist" is not yet defined
+psql:ltree.sql:420: NOTICE: argument type ltxtquery is only a shell
+psql:ltree.sql:482: NOTICE: type "ltree_gist" is not yet defined
DETAIL: Creating a shell type definition.
-psql:ltree.sql:482: NOTICE: argument type ltree_gist is only a shell
+psql:ltree.sql:487: NOTICE: argument type ltree_gist is only a shell
SELECT ''::ltree;
ltree
-------
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
+CREATE FUNCTION ltreeparentsel(internal, oid, internal, integer)
+RETURNS float8
+AS 'MODULE_PATHNAME'
+LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
+
CREATE OPERATOR @> (
LEFTARG = ltree,
RIGHTARG = ltree,
/*
* op function for ltree
* Teodor Sigaev <teodor@stack.net>
- * $PostgreSQL: pgsql/contrib/ltree/ltree_op.c,v 1.9 2006/03/11 04:38:29 momjian Exp $
+ * $PostgreSQL: pgsql/contrib/ltree/ltree_op.c,v 1.10 2006/04/26 22:32:36 momjian Exp $
*/
#include "ltree.h"
#include <ctype.h>
+#include "access/heapam.h"
+#include "catalog/pg_statistic.h"
+#include "nodes/relation.h"
+#include "utils/lsyscache.h"
+#include "utils/selfuncs.h"
+#include "utils/syscache.h"
+
/* compare functions */
PG_FUNCTION_INFO_V1(ltree_cmp);
PG_FUNCTION_INFO_V1(ltree_lt);
Datum lca(PG_FUNCTION_ARGS);
Datum ltree2text(PG_FUNCTION_ARGS);
Datum text2ltree(PG_FUNCTION_ARGS);
+Datum ltreeparentsel(PG_FUNCTION_ARGS);
int
ltree_compare(const ltree * a, const ltree * b)
PG_RETURN_POINTER(out);
}
+
+
+#define DEFAULT_PARENT_SEL 0.001
+
+/*
+ * ltreeparentsel - Selectivity of parent relationship for ltree data types.
+ */
+Datum
+ltreeparentsel(PG_FUNCTION_ARGS)
+{
+ PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
+ Oid operator = PG_GETARG_OID(1);
+ List *args = (List *) PG_GETARG_POINTER(2);
+ int varRelid = PG_GETARG_INT32(3);
+ VariableStatData vardata;
+ Node *other;
+ bool varonleft;
+ Datum *values;
+ int nvalues;
+ float4 *numbers;
+ int nnumbers;
+ double selec = 0.0;
+
+ /*
+ * If expression is not variable <@ something or something <@ variable,
+ * then punt and return a default estimate.
+ */
+ if (!get_restriction_variable(root, args, varRelid,
+ &vardata, &other, &varonleft))
+ PG_RETURN_FLOAT8(DEFAULT_PARENT_SEL);
+
+ /*
+ * If the something is a NULL constant, assume operator is strict and
+ * return zero, ie, operator will never return TRUE.
+ */
+ if (IsA(other, Const) &&
+ ((Const *) other)->constisnull)
+ {
+ ReleaseVariableStats(vardata);
+ PG_RETURN_FLOAT8(0.0);
+ }
+
+ if (HeapTupleIsValid(vardata.statsTuple))
+ {
+ Form_pg_statistic stats;
+ double mcvsum = 0.0;
+ double mcvsel = 0.0;
+ double hissel = 0.0;
+
+ stats = (Form_pg_statistic) GETSTRUCT(vardata.statsTuple);
+
+ if (IsA(other, Const))
+ {
+ /* Variable is being compared to a known non-null constant */
+ Datum constval = ((Const *) other)->constvalue;
+ bool match = false;
+ int i;
+
+ /*
+ * Is the constant "<@" to any of the column's most common values?
+ */
+ if (get_attstatsslot(vardata.statsTuple,
+ vardata.atttype, vardata.atttypmod,
+ STATISTIC_KIND_MCV, InvalidOid,
+ &values, &nvalues,
+ &numbers, &nnumbers))
+ {
+ FmgrInfo contproc;
+
+ fmgr_info(get_opcode(operator), &contproc);
+
+ for (i = 0; i < nvalues; i++)
+ {
+ /* be careful to apply operator right way 'round */
+ if (varonleft)
+ match = DatumGetBool(FunctionCall2(&contproc,
+ values[i],
+ constval));
+ else
+ match = DatumGetBool(FunctionCall2(&contproc,
+ constval,
+ values[i]));
+
+ /* calculate total selectivity of all most-common-values */
+ mcvsum += numbers[i];
+
+ /* calculate selectivity of matching most-common-values */
+ if (match)
+ mcvsel += numbers[i];
+ }
+ }
+ else
+ {
+ /* no most-common-values info available */
+ values = NULL;
+ numbers = NULL;
+ i = nvalues = nnumbers = 0;
+ }
+
+ free_attstatsslot(vardata.atttype, values, nvalues, NULL, 0);
+
+ /*
+ * Is the constant "<@" to any of the column's histogram values?
+ */
+ if (get_attstatsslot(vardata.statsTuple,
+ vardata.atttype, vardata.atttypmod,
+ STATISTIC_KIND_HISTOGRAM, InvalidOid,
+ &values, &nvalues,
+ NULL, NULL))
+ {
+ FmgrInfo contproc;
+
+ fmgr_info(get_opcode(operator), &contproc);
+
+ for (i = 0; i < nvalues; i++)
+ {
+ /* be careful to apply operator right way 'round */
+ if (varonleft)
+ match = DatumGetBool(FunctionCall2(&contproc,
+ values[i],
+ constval));
+ else
+ match = DatumGetBool(FunctionCall2(&contproc,
+ constval,
+ values[i]));
+ /* count matching histogram values */
+ if (match)
+ hissel++;
+ }
+
+ if (hissel > 0.0)
+ {
+ /*
+ * some matching values found inside histogram, divide
+ * matching entries number by total histogram entries to
+ * get the histogram related selectivity
+ */
+ hissel /= nvalues;
+ }
+ }
+ else
+ {
+ /* no histogram info available */
+ values = NULL;
+ i = nvalues = 0;
+ }
+
+ free_attstatsslot(vardata.atttype, values, nvalues,
+ NULL, 0);
+
+
+ /*
+ * calculate selectivity based on MCV and histogram result
+ * histogram selectivity needs to be scaled down if there are any
+ * most-common-values
+ */
+ selec = mcvsel + hissel * (1.0 - mcvsum);
+
+ /*
+ * don't return 0.0 selectivity unless all table values are inside
+ * mcv
+ */
+ if (selec == 0.0 && mcvsum != 1.0)
+ selec = DEFAULT_PARENT_SEL;
+ }
+ else
+ selec = DEFAULT_PARENT_SEL;
+ }
+ else
+ selec = DEFAULT_PARENT_SEL;
+
+ ReleaseVariableStats(vardata);
+
+ /* result should be in range, but make sure... */
+ CLAMP_PROBABILITY(selec);
+
+ PG_RETURN_FLOAT8((float8) selec);
+}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/geo_selfuncs.c,v 1.28 2006/04/26 18:28:29 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/geo_selfuncs.c,v 1.29 2006/04/26 22:32:52 momjian Exp $
*
* XXX These are totally bogus. Perhaps someone will make them do
* something reasonable, someday.
#include "utils/geo_decls.h"
+
/*
* Selectivity functions for geometric operators. These are bogus -- unless
* we know the actual key distribution in the index, we can't make a good
{
PG_RETURN_FLOAT8(0.001);
}
-
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.200 2006/04/26 18:28:29 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.201 2006/04/26 22:32:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "utils/syscache.h"
-/* Return data from examine_variable and friends */
-typedef struct
-{
- Node *var; /* the Var or expression tree */
- RelOptInfo *rel; /* Relation, or NULL if not identifiable */
- HeapTuple statsTuple; /* pg_statistic tuple, or NULL if none */
- /* NB: if statsTuple!=NULL, it must be freed when caller is done */
- Oid vartype; /* exposed type of expression */
- Oid atttype; /* type to pass to get_attstatsslot */
- int32 atttypmod; /* typmod to pass to get_attstatsslot */
- bool isunique; /* true if matched to a unique index */
-} VariableStatData;
-
-#define ReleaseVariableStats(vardata) \
- do { \
- if (HeapTupleIsValid((vardata).statsTuple)) \
- ReleaseSysCache((vardata).statsTuple); \
- } while(0)
-
-
static double mcv_selectivity(VariableStatData *vardata, FmgrInfo *opproc,
Datum constval, double *sumcommonp);
static double ineq_histogram_selectivity(VariableStatData *vardata,
int rangelo, int rangehi);
static char *convert_string_datum(Datum value, Oid typid);
static double convert_timevalue_to_scalar(Datum value, Oid typid);
-static bool get_restriction_variable(PlannerInfo *root, List *args, int varRelid,
- VariableStatData *vardata, Node **other,
- bool *varonleft);
static void get_join_variables(PlannerInfo *root, List *args,
VariableStatData *vardata1,
VariableStatData *vardata2);
* Note: if there are Vars on both sides of the clause, we must fail, because
* callers are expecting that the other side will act like a pseudoconstant.
*/
-static bool
+bool
get_restriction_variable(PlannerInfo *root, List *args, int varRelid,
VariableStatData *vardata, Node **other,
bool *varonleft)
PG_RETURN_VOID();
}
-
-
-#define DEFAULT_PARENT_SEL 0.001
-
-/*
- * parentsel - Selectivity of parent relationship for ltree data types.
- */
-Datum
-parentsel(PG_FUNCTION_ARGS)
-{
- PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
- Oid operator = PG_GETARG_OID(1);
- List *args = (List *) PG_GETARG_POINTER(2);
- int varRelid = PG_GETARG_INT32(3);
- VariableStatData vardata;
- Node *other;
- bool varonleft;
- Datum *values;
- int nvalues;
- float4 *numbers;
- int nnumbers;
- double selec = 0.0;
-
- /*
- * If expression is not variable <@ something or something <@ variable,
- * then punt and return a default estimate.
- */
- if (!get_restriction_variable(root, args, varRelid,
- &vardata, &other, &varonleft))
- PG_RETURN_FLOAT8(DEFAULT_PARENT_SEL);
-
- /*
- * If the something is a NULL constant, assume operator is strict and
- * return zero, ie, operator will never return TRUE.
- */
- if (IsA(other, Const) &&
- ((Const *) other)->constisnull)
- {
- ReleaseVariableStats(vardata);
- PG_RETURN_FLOAT8(0.0);
- }
-
- if (HeapTupleIsValid(vardata.statsTuple))
- {
- Form_pg_statistic stats;
- double mcvsum = 0.0;
- double mcvsel = 0.0;
- double hissel = 0.0;
-
- stats = (Form_pg_statistic) GETSTRUCT(vardata.statsTuple);
-
- if (IsA(other, Const))
- {
- /* Variable is being compared to a known non-null constant */
- Datum constval = ((Const *) other)->constvalue;
- bool match = false;
- int i;
-
- /*
- * Is the constant "<@" to any of the column's most common values?
- */
- if (get_attstatsslot(vardata.statsTuple,
- vardata.atttype, vardata.atttypmod,
- STATISTIC_KIND_MCV, InvalidOid,
- &values, &nvalues,
- &numbers, &nnumbers))
- {
- FmgrInfo contproc;
-
- fmgr_info(get_opcode(operator), &contproc);
-
- for (i = 0; i < nvalues; i++)
- {
- /* be careful to apply operator right way 'round */
- if (varonleft)
- match = DatumGetBool(FunctionCall2(&contproc,
- values[i],
- constval));
- else
- match = DatumGetBool(FunctionCall2(&contproc,
- constval,
- values[i]));
-
- /* calculate total selectivity of all most-common-values */
- mcvsum += numbers[i];
-
- /* calculate selectivity of matching most-common-values */
- if (match)
- mcvsel += numbers[i];
- }
- }
- else
- {
- /* no most-common-values info available */
- values = NULL;
- numbers = NULL;
- i = nvalues = nnumbers = 0;
- }
-
- free_attstatsslot(vardata.atttype, values, nvalues, NULL, 0);
-
- /*
- * Is the constant "<@" to any of the column's histogram values?
- */
- if (get_attstatsslot(vardata.statsTuple,
- vardata.atttype, vardata.atttypmod,
- STATISTIC_KIND_HISTOGRAM, InvalidOid,
- &values, &nvalues,
- NULL, NULL))
- {
- FmgrInfo contproc;
-
- fmgr_info(get_opcode(operator), &contproc);
-
- for (i = 0; i < nvalues; i++)
- {
- /* be careful to apply operator right way 'round */
- if (varonleft)
- match = DatumGetBool(FunctionCall2(&contproc,
- values[i],
- constval));
- else
- match = DatumGetBool(FunctionCall2(&contproc,
- constval,
- values[i]));
- /* count matching histogram values */
- if (match)
- hissel++;
- }
-
- if (hissel > 0.0)
- {
- /*
- * some matching values found inside histogram, divide
- * matching entries number by total histogram entries to
- * get the histogram related selectivity
- */
- hissel /= nvalues;
- }
- }
- else
- {
- /* no histogram info available */
- values = NULL;
- i = nvalues = 0;
- }
-
- free_attstatsslot(vardata.atttype, values, nvalues,
- NULL, 0);
-
-
- /*
- * calculate selectivity based on MCV and histogram result
- * histogram selectivity needs to be scaled down if there are any
- * most-common-values
- */
- selec = mcvsel + hissel * (1.0 - mcvsum);
-
- /*
- * don't return 0.0 selectivity unless all table values are inside
- * mcv
- */
- if (selec == 0.0 && mcvsum != 1.0)
- selec = DEFAULT_PARENT_SEL;
- }
- else
- selec = DEFAULT_PARENT_SEL;
- }
- else
- selec = DEFAULT_PARENT_SEL;
-
- ReleaseVariableStats(vardata);
-
- /* result should be in range, but make sure... */
- CLAMP_PROBABILITY(selec);
-
- PG_RETURN_FLOAT8((float8) selec);
-}
-
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.325 2006/04/26 18:30:10 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.326 2006/04/26 22:33:13 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 200604261
+#define CATALOG_VERSION_NO 200604262
#endif
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.407 2006/04/26 18:28:30 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.408 2006/04/26 22:33:17 momjian Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
DESCR("GiST support");
DATA(insert OID = 2592 ( gist_circle_compress PGNSP PGUID 12 f f t f i 1 2281 "2281" _null_ _null_ _null_ gist_circle_compress - _null_ ));
DESCR("GiST support");
-DATA(insert OID = 2599 ( parentsel PGNSP PGUID 12 f f t f s 4 701 "2281 26 2281 23" _null_ _null_ _null_ parentsel - _null_ ));
-DESCR("enhanced restriction selectivity for ltree isparent comparison operators");
/*
* 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 1.29 2006/04/26 18:28:34 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.30 2006/04/26 22:33:36 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#define SELFUNCS_H
#include "fmgr.h"
+#include "access/htup.h"
#include "nodes/relation.h"
} while (0)
+/* Return data from examine_variable and friends */
+typedef struct
+{
+ Node *var; /* the Var or expression tree */
+ RelOptInfo *rel; /* Relation, or NULL if not identifiable */
+ HeapTuple statsTuple; /* pg_statistic tuple, or NULL if none */
+ /* NB: if statsTuple!=NULL, it must be freed when caller is done */
+ Oid vartype; /* exposed type of expression */
+ Oid atttype; /* type to pass to get_attstatsslot */
+ int32 atttypmod; /* typmod to pass to get_attstatsslot */
+ bool isunique; /* true if matched to a unique index */
+} VariableStatData;
+
+#define ReleaseVariableStats(vardata) \
+ do { \
+ if (HeapTupleIsValid((vardata).statsTuple)) \
+ ReleaseSysCache((vardata).statsTuple); \
+ } while(0)
+
+
typedef enum
{
Pattern_Type_Like, Pattern_Type_Like_IC,
extern Datum btcostestimate(PG_FUNCTION_ARGS);
extern Datum hashcostestimate(PG_FUNCTION_ARGS);
extern Datum gistcostestimate(PG_FUNCTION_ARGS);
-
-extern Datum parentsel(PG_FUNCTION_ARGS);
+extern bool get_restriction_variable(PlannerInfo *root, List *args, int varRelid,
+ VariableStatData *vardata, Node **other,
+ bool *varonleft);
#endif /* SELFUNCS_H */
projects / postgresql / commitdiff