92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_statistic_ext.h
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* definition of the "extended statistics" system catalog
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* (pg_statistic_ext)
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*
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* Note that pg_statistic_ext contains the definitions of extended statistics
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* objects, created by CREATE STATISTICS, but not the actual statistical data,
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* created by running ANALYZE.
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/catalog/pg_statistic_ext.h
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*
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* NOTES
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* The Catalog.pm module reads this file and derives schema
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* information.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_STATISTIC_EXT_H
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#define PG_STATISTIC_EXT_H
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#include "catalog/genbki.h"
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#include "catalog/pg_statistic_ext_d.h"
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/* ----------------
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* pg_statistic_ext definition. cpp turns this into
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* typedef struct FormData_pg_statistic_ext
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* ----------------
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*/
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CATALOG(pg_statistic_ext,3381,StatisticExtRelationId)
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{
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Oid oid; /* oid */
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Oid stxrelid BKI_LOOKUP(pg_class); /* relation containing
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* attributes */
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/* These two fields form the unique key for the entry: */
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NameData stxname; /* statistics object name */
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Oid stxnamespace BKI_LOOKUP(pg_namespace); /* OID of statistics
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* object's namespace */
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Oid stxowner BKI_LOOKUP(pg_authid); /* statistics object's owner */
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/*
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* variable-length/nullable fields start here, but we allow direct access
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* to stxkeys
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*/
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int2vector stxkeys BKI_FORCE_NOT_NULL; /* array of column keys */
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#ifdef CATALOG_VARLEN
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int16 stxstattarget BKI_DEFAULT(_null_) BKI_FORCE_NULL; /* statistics target */
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char stxkind[1] BKI_FORCE_NOT_NULL; /* statistics kinds requested
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* to build */
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pg_node_tree stxexprs; /* A list of expression trees for stats
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* attributes that are not simple column
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* references. */
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#endif
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} FormData_pg_statistic_ext;
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/* ----------------
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* Form_pg_statistic_ext corresponds to a pointer to a tuple with
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* the format of pg_statistic_ext relation.
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* ----------------
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*/
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typedef FormData_pg_statistic_ext *Form_pg_statistic_ext;
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DECLARE_TOAST(pg_statistic_ext, 3439, 3440);
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DECLARE_UNIQUE_INDEX_PKEY(pg_statistic_ext_oid_index, 3380, StatisticExtOidIndexId, pg_statistic_ext, btree(oid oid_ops));
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DECLARE_UNIQUE_INDEX(pg_statistic_ext_name_index, 3997, StatisticExtNameIndexId, pg_statistic_ext, btree(stxname name_ops, stxnamespace oid_ops));
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DECLARE_INDEX(pg_statistic_ext_relid_index, 3379, StatisticExtRelidIndexId, pg_statistic_ext, btree(stxrelid oid_ops));
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MAKE_SYSCACHE(STATEXTOID, pg_statistic_ext_oid_index, 4);
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MAKE_SYSCACHE(STATEXTNAMENSP, pg_statistic_ext_name_index, 4);
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DECLARE_ARRAY_FOREIGN_KEY((stxrelid, stxkeys), pg_attribute, (attrelid, attnum));
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#ifdef EXPOSE_TO_CLIENT_CODE
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#define STATS_EXT_NDISTINCT 'd'
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#define STATS_EXT_DEPENDENCIES 'f'
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#define STATS_EXT_MCV 'm'
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#define STATS_EXT_EXPRESSIONS 'e'
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#endif /* EXPOSE_TO_CLIENT_CODE */
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#endif /* PG_STATISTIC_EXT_H */
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