mirror of
https://github.com/postgres/postgres.git
synced 2026-04-29 18:32:53 -04:00
dfb75e478c
For those system catalogs that have a unique indexes, make a primary key and unique constraint, using ALTER TABLE ... PRIMARY KEY/UNIQUE USING INDEX. This can be helpful for GUI tools that look for a primary key, and it might in the future allow declaring foreign keys, for making schema diagrams. The constraint creation statements are automatically created by genbki.pl from DECLARE_UNIQUE_INDEX directives. To specify which one of the available unique indexes is the primary key, use the new directive DECLARE_UNIQUE_INDEX_PKEY instead. By convention, we usually make a catalog's OID column its primary key, if it has one. Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://www.postgresql.org/message-id/flat/dc5f44d9-5ec1-a596-0251-dadadcdede98@2ndquadrant.com
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* pg_range.h
|
|
* definition of the "range type" system catalog (pg_range)
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/catalog/pg_range.h
|
|
*
|
|
* NOTES
|
|
* The Catalog.pm module reads this file and derives schema
|
|
* information.
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PG_RANGE_H
|
|
#define PG_RANGE_H
|
|
|
|
#include "catalog/genbki.h"
|
|
#include "catalog/pg_range_d.h"
|
|
|
|
/* ----------------
|
|
* pg_range definition. cpp turns this into
|
|
* typedef struct FormData_pg_range
|
|
* ----------------
|
|
*/
|
|
CATALOG(pg_range,3541,RangeRelationId)
|
|
{
|
|
/* OID of owning range type */
|
|
Oid rngtypid BKI_LOOKUP(pg_type);
|
|
|
|
/* OID of range's element type (subtype) */
|
|
Oid rngsubtype BKI_LOOKUP(pg_type);
|
|
|
|
/* OID of the range's multirange type */
|
|
Oid rngmultitypid BKI_LOOKUP(pg_type);
|
|
|
|
/* collation for this range type, or 0 */
|
|
Oid rngcollation BKI_DEFAULT(0);
|
|
|
|
/* subtype's btree opclass */
|
|
Oid rngsubopc BKI_LOOKUP(pg_opclass);
|
|
|
|
/* canonicalize range, or 0 */
|
|
regproc rngcanonical BKI_LOOKUP(pg_proc);
|
|
|
|
/* subtype difference as a float8, or 0 */
|
|
regproc rngsubdiff BKI_LOOKUP(pg_proc);
|
|
} FormData_pg_range;
|
|
|
|
/* ----------------
|
|
* Form_pg_range corresponds to a pointer to a tuple with
|
|
* the format of pg_range relation.
|
|
* ----------------
|
|
*/
|
|
typedef FormData_pg_range *Form_pg_range;
|
|
|
|
DECLARE_UNIQUE_INDEX_PKEY(pg_range_rngtypid_index, 3542, on pg_range using btree(rngtypid oid_ops));
|
|
#define RangeTypidIndexId 3542
|
|
|
|
DECLARE_UNIQUE_INDEX(pg_range_rngmultitypid_index, 2228, on pg_range using btree(rngmultitypid oid_ops));
|
|
#define RangeMultirangeTypidIndexId 2228
|
|
|
|
|
|
/*
|
|
* prototypes for functions in pg_range.c
|
|
*/
|
|
|
|
extern void RangeCreate(Oid rangeTypeOid, Oid rangeSubType, Oid rangeCollation,
|
|
Oid rangeSubOpclass, RegProcedure rangeCanonical,
|
|
RegProcedure rangeSubDiff, Oid multirangeTypeOid);
|
|
extern void RangeDelete(Oid rangeTypeOid);
|
|
|
|
#endif /* PG_RANGE_H */
|