Quelle  pg_foreign_table.h

/*-------------------------------------------------------------------------
 *
 * pg_foreign_table.h
 *   definition of the "foreign table" system catalog (pg_foreign_table)
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/catalog/pg_foreign_table.h
 *
 * NOTES
 *   The Catalog.pm module reads this file and derives schema
 *   information.
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_FOREIGN_TABLE_H
#define PG_FOREIGN_TABLE_H

#include "catalog/genbki.h"
#include "catalog/pg_foreign_table_d.h" /* IWYU pragma: export */

/* ----------------
 *  pg_foreign_table definition.  cpp turns this into
 *  typedef struct FormData_pg_foreign_table
 * ----------------
 */
CATALOG(pg_foreign_table,3118,ForeignTableRelationId)
{
 Oid   ftrelid BKI_LOOKUP(pg_class); /* OID of foreign table */
 Oid   ftserver BKI_LOOKUP(pg_foreign_server); /* OID of foreign server */

#ifdef CATALOG_VARLEN   /* variable-length fields start here */
 text  ftoptions[1]; /* FDW-specific options */
#endif
} FormData_pg_foreign_table;

/* ----------------
 *  Form_pg_foreign_table corresponds to a pointer to a tuple with
 *  the format of pg_foreign_table relation.
 * ----------------
 */
typedef FormData_pg_foreign_table *Form_pg_foreign_table;

DECLARE_TOAST(pg_foreign_table, 4153, 4154);

DECLARE_UNIQUE_INDEX_PKEY(pg_foreign_table_relid_index, 3119, ForeignTableRelidIndexId, pg_foreign_table, btree(ftrelid oid_ops));

MAKE_SYSCACHE(FOREIGNTABLEREL, pg_foreign_table_relid_index, 4);

#endif       /* PG_FOREIGN_TABLE_H */