1 /*------------------------------------------------------------------------- 2 * 3 * pg_shdescription.h 4 * definition of the "shared description" system catalog 5 * (pg_shdescription) 6 * 7 * Because the contents of this table are taken from the *.dat files 8 * of other catalogs, there is no pg_shdescription.dat file. The initial 9 * contents are assembled by genbki.pl and loaded during initdb. 10 * 11 * NOTE: an object is identified by the OID of the row that primarily 12 * defines the object, plus the OID of the table that that row appears in. 13 * For example, a database is identified by the OID of its pg_database row 14 * plus the pg_class OID of table pg_database. This allows unique 15 * identification of objects without assuming that OIDs are unique 16 * across tables. 17 * 18 * 19 * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group 20 * Portions Copyright (c) 1994, Regents of the University of California 21 * 22 * src/include/catalog/pg_shdescription.h 23 * 24 * NOTES 25 * The Catalog.pm module reads this file and derives schema 26 * information. 27 * 28 *------------------------------------------------------------------------- 29 */ 30 #ifndef PG_SHDESCRIPTION_H 31 #define PG_SHDESCRIPTION_H 32 33 #include "catalog/genbki.h" 34 #include "catalog/pg_shdescription_d.h" 35 36 /* ---------------- 37 * pg_shdescription definition. cpp turns this into 38 * typedef struct FormData_pg_shdescription 39 * ---------------- 40 */ 41 CATALOG(pg_shdescription,2396,SharedDescriptionRelationId) BKI_SHARED_RELATION 42 { 43 Oid objoid; /* OID of object itself */ 44 Oid classoid; /* OID of table containing object */ 45 46 #ifdef CATALOG_VARLEN /* variable-length fields start here */ 47 text description BKI_FORCE_NOT_NULL; /* description of object */ 48 #endif 49 } FormData_pg_shdescription; 50 51 /* ---------------- 52 * Form_pg_shdescription corresponds to a pointer to a tuple with 53 * the format of pg_shdescription relation. 54 * ---------------- 55 */ 56 typedef FormData_pg_shdescription * Form_pg_shdescription; 57 58 DECLARE_TOAST(pg_shdescription, 2846, 2847); 59 #define PgShdescriptionToastTable 2846 60 #define PgShdescriptionToastIndex 2847 61 62 DECLARE_UNIQUE_INDEX_PKEY(pg_shdescription_o_c_index, 2397, on pg_shdescription using btree(objoid oid_ops, classoid oid_ops)); 63 #define SharedDescriptionObjIndexId 2397 64 65 /* We do not use BKI_LOOKUP here because it causes problems for genbki.pl */ 66 DECLARE_FOREIGN_KEY((classoid), pg_class, (oid)); 67 68 #endif /* PG_SHDESCRIPTION_H */ 69