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/*-------------------------------------------------------------------------
*
* pg_statistic_ext.h
* definition of the "extended statistics" system catalog
* (pg_statistic_ext)
*
* Note that pg_statistic_ext contains the definitions of extended statistics
* objects, created by CREATE STATISTICS, but not the actual statistical data,
* created by running ANALYZE.
*
* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_statistic_ext.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_STATISTIC_EXT_H
#define PG_STATISTIC_EXT_H
#include "catalog/genbki.h"
#include "catalog/pg_statistic_ext_d.h"
/* ----------------
* pg_statistic_ext definition. cpp turns this into
* typedef struct FormData_pg_statistic_ext
* ----------------
*/
CATALOG(pg_statistic_ext,3381,StatisticExtRelationId)
{
Oid oid; /* oid */
Oid stxrelid BKI_LOOKUP(pg_class); /* relation containing
* attributes */
/* These two fields form the unique key for the entry: */
NameData stxname; /* statistics object name */
Oid stxnamespace BKI_LOOKUP(pg_namespace); /* OID of statistics
* object's namespace */
Oid stxowner BKI_LOOKUP(pg_authid); /* statistics object's owner */
int32 stxstattarget BKI_DEFAULT(-1); /* statistics target */
/*
* variable-length fields start here, but we allow direct access to
* stxkeys
*/
int2vector stxkeys BKI_FORCE_NOT_NULL; /* array of column keys */
#ifdef CATALOG_VARLEN
char stxkind[1] BKI_FORCE_NOT_NULL; /* statistics kinds requested
* to build */
pg_node_tree stxexprs; /* A list of expression trees for stats
* attributes that are not simple column
* references. */
#endif
} FormData_pg_statistic_ext;
/* ----------------
* Form_pg_statistic_ext corresponds to a pointer to a tuple with
* the format of pg_statistic_ext relation.
* ----------------
*/
typedef FormData_pg_statistic_ext *Form_pg_statistic_ext;
DECLARE_TOAST(pg_statistic_ext, 3439, 3440);
DECLARE_UNIQUE_INDEX_PKEY(pg_statistic_ext_oid_index, 3380, StatisticExtOidIndexId, on pg_statistic_ext using btree(oid oid_ops));
DECLARE_UNIQUE_INDEX(pg_statistic_ext_name_index, 3997, StatisticExtNameIndexId, on pg_statistic_ext using btree(stxname name_ops, stxnamespace oid_ops));
DECLARE_INDEX(pg_statistic_ext_relid_index, 3379, StatisticExtRelidIndexId, on pg_statistic_ext using btree(stxrelid oid_ops));
DECLARE_ARRAY_FOREIGN_KEY((stxrelid, stxkeys), pg_attribute, (attrelid, attnum));
#ifdef EXPOSE_TO_CLIENT_CODE
#define STATS_EXT_NDISTINCT 'd'
#define STATS_EXT_DEPENDENCIES 'f'
#define STATS_EXT_MCV 'm'
#define STATS_EXT_EXPRESSIONS 'e'
#endif /* EXPOSE_TO_CLIENT_CODE */
#endif /* PG_STATISTIC_EXT_H */
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