/
balmaster
/
postgres
Обзор
Документация
Войти
/
balmaster
/
postgres
Код
Запросы
0
Задачи
Вики
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
src/include/catalog/pg_class.h
243 строки
8 KB
Peter Eisentraut
SQL Property Graph Queries (SQL/PGQ)
16 мар 2026, 12:14
16 мар 2026, 12:14
2f094e7
Код
Авторство
О чём код?
/*------------------------------------------------------------------------- * * pg_class.h * definition of the "relation" system catalog (pg_class) * * * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/catalog/pg_class.h * * NOTES * The Catalog.pm module reads this file and derives schema * information. * *------------------------------------------------------------------------- */ #ifndef PG_CLASS_H #define PG_CLASS_H #include "catalog/genbki.h" #include "catalog/pg_class_d.h" /* IWYU pragma: export */ /* ---------------- * pg_class definition. cpp turns this into * typedef struct FormData_pg_class * * Note that the BKI_DEFAULT values below are only used for rows describing * BKI_BOOTSTRAP catalogs, since only those rows appear in pg_class.dat. * ---------------- */ BEGIN_CATALOG_STRUCT CATALOG(pg_class,1259,RelationRelationId) BKI_BOOTSTRAP BKI_ROWTYPE_OID(83,RelationRelation_Rowtype_Id) BKI_SCHEMA_MACRO { /* oid */ Oid oid; /* class name */ NameData relname; /* OID of namespace containing this class */ Oid relnamespace BKI_DEFAULT(pg_catalog) BKI_LOOKUP(pg_namespace); /* OID of entry in pg_type for relation's implicit row type, if any */ Oid reltype BKI_LOOKUP_OPT(pg_type); /* OID of entry in pg_type for underlying composite type, if any */ Oid reloftype BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_type); /* class owner */ Oid relowner BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid); /* access method; 0 if not a table / index */ Oid relam BKI_DEFAULT(heap) BKI_LOOKUP_OPT(pg_am); /* identifier of physical storage file */ /* relfilenode == 0 means it is a "mapped" relation, see relmapper.c */ Oid relfilenode BKI_DEFAULT(0); /* identifier of table space for relation (0 means default for database) */ Oid reltablespace BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_tablespace); /* # of blocks (not always up-to-date) */ int32 relpages BKI_DEFAULT(0); /* # of tuples (not always up-to-date; -1 means "unknown") */ float4 reltuples BKI_DEFAULT(-1); /* # of all-visible blocks (not always up-to-date) */ int32 relallvisible BKI_DEFAULT(0); /* # of all-frozen blocks (not always up-to-date) */ int32 relallfrozen BKI_DEFAULT(0); /* OID of toast table; 0 if none */ Oid reltoastrelid BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_class); /* T if has (or has had) any indexes */ bool relhasindex BKI_DEFAULT(f); /* T if shared across databases */ bool relisshared BKI_DEFAULT(f); /* see RELPERSISTENCE_xxx constants below */ char relpersistence BKI_DEFAULT(p); /* see RELKIND_xxx constants below */ char relkind BKI_DEFAULT(r); /* number of user attributes */ int16 relnatts BKI_DEFAULT(0); /* genbki.pl will fill this in */ /* * Class pg_attribute must contain exactly "relnatts" user attributes * (with attnums ranging from 1 to relnatts) for this class. It may also * contain entries with negative attnums for system attributes. */ /* # of CHECK constraints for class */ int16 relchecks BKI_DEFAULT(0); /* has (or has had) any rules */ bool relhasrules BKI_DEFAULT(f); /* has (or has had) any TRIGGERs */ bool relhastriggers BKI_DEFAULT(f); /* has (or has had) child tables or indexes */ bool relhassubclass BKI_DEFAULT(f); /* row security is enabled or not */ bool relrowsecurity BKI_DEFAULT(f); /* row security forced for owners or not */ bool relforcerowsecurity BKI_DEFAULT(f); /* matview currently holds query results */ bool relispopulated BKI_DEFAULT(t); /* see REPLICA_IDENTITY_xxx constants */ char relreplident BKI_DEFAULT(n); /* is relation a partition? */ bool relispartition BKI_DEFAULT(f); /* link to original rel during table rewrite; otherwise 0 */ Oid relrewrite BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_class); /* all Xids < this are frozen in this rel */ TransactionId relfrozenxid BKI_DEFAULT(3); /* FirstNormalTransactionId */ /* all multixacts in this rel are >= this; it is really a MultiXactId */ TransactionId relminmxid BKI_DEFAULT(1); /* FirstMultiXactId */ #ifdef CATALOG_VARLEN /* variable-length fields start here */ /* NOTE: These fields are not present in a relcache entry's rd_rel field. */ /* access permissions */ aclitem relacl[1] BKI_DEFAULT(_null_); /* access-method-specific options */ text reloptions[1] BKI_DEFAULT(_null_); /* partition bound node tree */ pg_node_tree relpartbound BKI_DEFAULT(_null_); #endif } FormData_pg_class; END_CATALOG_STRUCT /* Size of fixed part of pg_class tuples, not counting var-length fields */ #define CLASS_TUPLE_SIZE \ (offsetof(FormData_pg_class,relminmxid) + sizeof(TransactionId)) /* ---------------- * Form_pg_class corresponds to a pointer to a tuple with * the format of pg_class relation. * ---------------- */ typedef FormData_pg_class *Form_pg_class; DECLARE_UNIQUE_INDEX_PKEY(pg_class_oid_index, 2662, ClassOidIndexId, pg_class, btree(oid oid_ops)); DECLARE_UNIQUE_INDEX(pg_class_relname_nsp_index, 2663, ClassNameNspIndexId, pg_class, btree(relname name_ops, relnamespace oid_ops)); DECLARE_INDEX(pg_class_tblspc_relfilenode_index, 3455, ClassTblspcRelfilenodeIndexId, pg_class, btree(reltablespace oid_ops, relfilenode oid_ops)); MAKE_SYSCACHE(RELOID, pg_class_oid_index, 128); MAKE_SYSCACHE(RELNAMENSP, pg_class_relname_nsp_index, 128); #ifdef EXPOSE_TO_CLIENT_CODE #define RELKIND_RELATION 'r' /* ordinary table */ #define RELKIND_INDEX 'i' /* secondary index */ #define RELKIND_SEQUENCE 'S' /* sequence object */ #define RELKIND_TOASTVALUE 't' /* for out-of-line values */ #define RELKIND_VIEW 'v' /* view */ #define RELKIND_MATVIEW 'm' /* materialized view */ #define RELKIND_COMPOSITE_TYPE 'c' /* composite type */ #define RELKIND_FOREIGN_TABLE 'f' /* foreign table */ #define RELKIND_PARTITIONED_TABLE 'p' /* partitioned table */ #define RELKIND_PARTITIONED_INDEX 'I' /* partitioned index */ #define RELKIND_PROPGRAPH 'g' /* property graph */ #define RELPERSISTENCE_PERMANENT 'p' /* regular table */ #define RELPERSISTENCE_UNLOGGED 'u' /* unlogged permanent table */ #define RELPERSISTENCE_TEMP 't' /* temporary table */ /* default selection for replica identity (primary key or nothing) */ #define REPLICA_IDENTITY_DEFAULT 'd' /* no replica identity is logged for this relation */ #define REPLICA_IDENTITY_NOTHING 'n' /* all columns are logged as replica identity */ #define REPLICA_IDENTITY_FULL 'f' /* * an explicitly chosen candidate key's columns are used as replica identity. * Note this will still be set if the index has been dropped; in that case it * has the same meaning as 'n'. */ #define REPLICA_IDENTITY_INDEX 'i' /* * Relation kinds that have physical storage. These relations normally have * relfilenode set to non-zero, but it can also be zero if the relation is * mapped. */ #define RELKIND_HAS_STORAGE(relkind) \ ((relkind) == RELKIND_RELATION || \ (relkind) == RELKIND_INDEX || \ (relkind) == RELKIND_SEQUENCE || \ (relkind) == RELKIND_TOASTVALUE || \ (relkind) == RELKIND_MATVIEW) #define RELKIND_HAS_PARTITIONS(relkind) \ ((relkind) == RELKIND_PARTITIONED_TABLE || \ (relkind) == RELKIND_PARTITIONED_INDEX) /* * Relation kinds that support tablespaces: All relation kinds with storage * support tablespaces, except that we don't support moving sequences around * into different tablespaces. Partitioned tables and indexes don't have * physical storage, but they have a tablespace settings so that their * children can inherit it. */ #define RELKIND_HAS_TABLESPACE(relkind) \ ((RELKIND_HAS_STORAGE(relkind) || RELKIND_HAS_PARTITIONS(relkind)) \ && (relkind) != RELKIND_SEQUENCE) /* * Relation kinds with a table access method (rd_tableam). Although sequences * use the heap table AM, they are enough of a special case in most uses that * they are not included here. Likewise, partitioned tables can have an access * method defined so that their partitions can inherit it, but they do not set * rd_tableam; hence, this is handled specially outside of this macro. */ #define RELKIND_HAS_TABLE_AM(relkind) \ ((relkind) == RELKIND_RELATION || \ (relkind) == RELKIND_TOASTVALUE || \ (relkind) == RELKIND_MATVIEW) #endif /* EXPOSE_TO_CLIENT_CODE */ extern int errdetail_relkind_not_supported(char relkind); #endif /* PG_CLASS_H */