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) 1996-2019, 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"
27
28/* ----------------
29 * pg_statistic_ext definition. cpp turns this into
30 * typedef struct FormData_pg_statistic_ext
31 * ----------------
32 */
33CATALOG(pg_statistic_ext,3381,StatisticExtRelationId)
34{
35 Oid oid; /* oid */
36
37 Oid stxrelid; /* relation containing attributes */
38
39 /* These two fields form the unique key for the entry: */
40 NameData stxname; /* statistics object name */
41 Oid stxnamespace; /* OID of statistics object's namespace */
42
43 Oid stxowner; /* statistics object's owner */
44
45 /*
46 * variable-length fields start here, but we allow direct access to
47 * stxkeys
48 */
49 int2vector stxkeys; /* array of column keys */
50
51#ifdef CATALOG_VARLEN
52 char stxkind[1] BKI_FORCE_NOT_NULL; /* statistics kinds requested
53 * to build */
54#endif
55
56} FormData_pg_statistic_ext;
57
58/* ----------------
59 * Form_pg_statistic_ext corresponds to a pointer to a tuple with
60 * the format of pg_statistic_ext relation.
61 * ----------------
62 */
63typedef FormData_pg_statistic_ext *Form_pg_statistic_ext;
64
65#ifdef EXPOSE_TO_CLIENT_CODE
66
67#define STATS_EXT_NDISTINCT 'd'
68#define STATS_EXT_DEPENDENCIES 'f'
69#define STATS_EXT_MCV 'm'
70
71#endif /* EXPOSE_TO_CLIENT_CODE */
72
73#endif /* PG_STATISTIC_EXT_H */
74