PostgreSQL Source Code: src/include/catalog/pg_statistic_ext.h Source File

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pg_statistic_ext.h
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1/*-------------------------------------------------------------------------
2 *
3 * pg_statistic_ext.h
4 * definition of the "extended statistics" system catalog
5 * (pg_statistic_ext)
6 *
7 * Note that pg_statistic_ext contains the definitions of extended statistics
8 * objects, created by CREATE STATISTICS, but not the actual statistical data,
9 * created by running ANALYZE.
10 *
11 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
12 * Portions Copyright (c) 1994, Regents of the University of California
13 *
14 * src/include/catalog/pg_statistic_ext.h
15 *
16 * NOTES
17 * The Catalog.pm module reads this file and derives schema
18 * information.
19 *
20 *-------------------------------------------------------------------------
21 */
22#ifndef PG_STATISTIC_EXT_H
23#define PG_STATISTIC_EXT_H
24
25#include "catalog/genbki.h"
26#include "catalog/pg_statistic_ext_d.h" /* IWYU pragma: export */
27
28/* ----------------
29 * pg_statistic_ext definition. cpp turns this into
30 * typedef struct FormData_pg_statistic_ext
31 * ----------------
32 */
33 CATALOG(pg_statistic_ext,3381,StatisticExtRelationId)
34{
35 Oid oid; /* oid */
36
37 Oid stxrelid BKI_LOOKUP(pg_class); /* relation containing
38 * attributes */
39
40 /* These two fields form the unique key for the entry: */
41 NameData stxname; /* statistics object name */
42 Oid stxnamespace BKI_LOOKUP(pg_namespace); /* OID of statistics
43 * object's namespace */
44
45 Oid stxowner BKI_LOOKUP(pg_authid); /* statistics object's owner */
46
47 /*
48 * variable-length/nullable fields start here, but we allow direct access
49 * to stxkeys
50 */
51 int2vector stxkeys BKI_FORCE_NOT_NULL; /* array of column keys */
52
53#ifdef CATALOG_VARLEN
54 int16 stxstattarget BKI_DEFAULT(_null_) BKI_FORCE_NULL; /* statistics target */
55 char stxkind[1] BKI_FORCE_NOT_NULL; /* statistics kinds requested
56 * to build */
57 pg_node_tree stxexprs; /* A list of expression trees for stats
58 * attributes that are not simple column
59 * references. */
60#endif
61
62 } FormData_pg_statistic_ext;
63
64/* ----------------
65 * Form_pg_statistic_ext corresponds to a pointer to a tuple with
66 * the format of pg_statistic_ext relation.
67 * ----------------
68 */
69 typedef FormData_pg_statistic_ext *Form_pg_statistic_ext;
70
71 DECLARE_TOAST(pg_statistic_ext, 3439, 3440);
72
73 DECLARE_UNIQUE_INDEX_PKEY(pg_statistic_ext_oid_index, 3380, StatisticExtOidIndexId, pg_statistic_ext, btree(oid oid_ops));
74 DECLARE_UNIQUE_INDEX(pg_statistic_ext_name_index, 3997, StatisticExtNameIndexId, pg_statistic_ext, btree(stxname name_ops, stxnamespace oid_ops));
75 DECLARE_INDEX(pg_statistic_ext_relid_index, 3379, StatisticExtRelidIndexId, pg_statistic_ext, btree(stxrelid oid_ops));
76
77 MAKE_SYSCACHE(STATEXTOID, pg_statistic_ext_oid_index, 4);
78 MAKE_SYSCACHE(STATEXTNAMENSP, pg_statistic_ext_name_index, 4);
79
80 DECLARE_ARRAY_FOREIGN_KEY((stxrelid, stxkeys), pg_attribute, (attrelid, attnum));
81
82#ifdef EXPOSE_TO_CLIENT_CODE
83
84#define STATS_EXT_NDISTINCT 'd'
85#define STATS_EXT_DEPENDENCIES 'f'
86#define STATS_EXT_MCV 'm'
87#define STATS_EXT_EXPRESSIONS 'e'
88
89#endif /* EXPOSE_TO_CLIENT_CODE */
90
91#endif /* PG_STATISTIC_EXT_H */
int16_t int16
Definition: c.h:533
#define BKI_LOOKUP(catalog)
Definition: genbki.h:46
#define BKI_DEFAULT(value)
Definition: genbki.h:35
#define BKI_FORCE_NOT_NULL
Definition: genbki.h:33
#define BKI_FORCE_NULL
Definition: genbki.h:32
int16 attnum
Definition: pg_attribute.h:74
MAKE_SYSCACHE(STATEXTOID, pg_statistic_ext_oid_index, 4)
DECLARE_UNIQUE_INDEX_PKEY(pg_statistic_ext_oid_index, 3380, StatisticExtOidIndexId, pg_statistic_ext, btree(oid oid_ops))
FormData_pg_statistic_ext * Form_pg_statistic_ext
DECLARE_UNIQUE_INDEX(pg_statistic_ext_name_index, 3997, StatisticExtNameIndexId, pg_statistic_ext, btree(stxname name_ops, stxnamespace oid_ops))
CATALOG(pg_statistic_ext, 3381, StatisticExtRelationId)
DECLARE_TOAST(pg_statistic_ext, 3439, 3440)
DECLARE_ARRAY_FOREIGN_KEY((stxrelid, stxkeys), pg_attribute,(attrelid, attnum))
FormData_pg_statistic_ext
DECLARE_INDEX(pg_statistic_ext_relid_index, 3379, StatisticExtRelidIndexId, pg_statistic_ext, btree(stxrelid oid_ops))
unsigned int Oid
Definition: postgres_ext.h:32
Definition: c.h:720
Definition: c.h:746

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