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/*-------------------------------------------------------------------------
*
* pg_database.h
* definition of the "database" system catalog (pg_database)
*
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_database.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_DATABASE_H
#define PG_DATABASE_H
#include "catalog/genbki.h"
#include "catalog/pg_database_d.h"
/* ----------------
* pg_database definition. cpp turns this into
* typedef struct FormData_pg_database
* ----------------
*/
CATALOG(pg_database,1262,DatabaseRelationId) BKI_SHARED_RELATION BKI_ROWTYPE_OID(1248,DatabaseRelation_Rowtype_Id) BKI_SCHEMA_MACRO
{
/* oid */
Oid oid;
/* database name */
NameData datname;
/* owner of database */
Oid datdba BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid);
/* character encoding */
int32 encoding;
/* locale provider, see pg_collation.collprovider */
char datlocprovider;
/* allowed as CREATE DATABASE template? */
bool datistemplate;
/* new connections allowed? */
bool datallowconn;
/*
* Max connections allowed. Negative values have special meaning, see
* DATCONNLIMIT_* defines below.
*/
int32 datconnlimit;
/* all Xids < this are frozen in this DB */
TransactionId datfrozenxid;
/* all multixacts in the DB are >= this */
TransactionId datminmxid;
/* default table space for this DB */
Oid dattablespace BKI_LOOKUP(pg_tablespace);
#ifdef CATALOG_VARLEN /* variable-length fields start here */
/* LC_COLLATE setting */
text datcollate BKI_FORCE_NOT_NULL;
/* LC_CTYPE setting */
text datctype BKI_FORCE_NOT_NULL;
/* ICU locale ID */
text daticulocale;
/* ICU collation rules */
text daticurules;
/* provider-dependent version of collation data */
text datcollversion BKI_DEFAULT(_null_);
/* access permissions */
aclitem datacl[1];
#endif
} FormData_pg_database;
/* ----------------
* Form_pg_database corresponds to a pointer to a tuple with
* the format of pg_database relation.
* ----------------
*/
typedef FormData_pg_database *Form_pg_database;
DECLARE_TOAST_WITH_MACRO(pg_database, 4177, 4178, PgDatabaseToastTable, PgDatabaseToastIndex);
DECLARE_UNIQUE_INDEX(pg_database_datname_index, 2671, DatabaseNameIndexId, on pg_database using btree(datname name_ops));
DECLARE_UNIQUE_INDEX_PKEY(pg_database_oid_index, 2672, DatabaseOidIndexId, on pg_database using btree(oid oid_ops));
/*
* pg_database.dat contains an entry for template1, but not for the template0
* or postgres databases, because those are created later in initdb.
* However, we still want to manually assign the OIDs for template0 and
* postgres, so declare those here.
*/
DECLARE_OID_DEFINING_MACRO(Template0DbOid, 4);
DECLARE_OID_DEFINING_MACRO(PostgresDbOid, 5);
/*
* Special values for pg_database.datconnlimit. Normal values are >= 0.
*/
#define DATCONNLIMIT_UNLIMITED -1 /* no limit */
/*
* A database is set to invalid partway through being dropped. Using
* datconnlimit=-2 for this purpose isn't particularly clean, but is
* backpatchable.
*/
#define DATCONNLIMIT_INVALID_DB -2
extern bool database_is_invalid_form(Form_pg_database datform);
extern bool database_is_invalid_oid(Oid dboid);
#endif /* PG_DATABASE_H */
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