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https://git.postgresql.org/git/postgresql.git
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e2d156fa6e
column additions, deletions, and renames that would let a child table get out of sync with its parent. Patch by Alvaro Herrera, with some kibitzing by Tom Lane.
175 lines
6.3 KiB
C
175 lines
6.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_class.h
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* definition of the system "relation" relation (pg_class)
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* along with the relation's initial contents.
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*
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: pg_class.h,v 1.72 2002/08/30 19:23:20 tgl Exp $
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*
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* NOTES
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* the genbki.sh script reads this file and generates .bki
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* information from the DATA() statements.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_CLASS_H
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#define PG_CLASS_H
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/* ----------------
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* postgres.h contains the system type definintions and the
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* CATALOG(), BOOTSTRAP and DATA() sugar words so this file
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* can be read by both genbki.sh and the C compiler.
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* ----------------
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*/
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/* ----------------
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* pg_class definition. cpp turns this into
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* typedef struct FormData_pg_class
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* ----------------
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*/
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/* ----------------
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* This structure is actually variable-length (the last attribute is
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* a POSTGRES array). Hence, sizeof(FormData_pg_class) does not
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* necessarily match the actual length of the structure. Furthermore
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* relacl may be a NULL field. Hence, you MUST use heap_getattr()
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* to get the relacl field ... and don't forget to check isNull.
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* ----------------
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*/
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CATALOG(pg_class) BOOTSTRAP
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{
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NameData relname; /* class name */
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Oid relnamespace; /* OID of namespace containing this class */
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Oid reltype; /* OID of associated entry in pg_type */
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int4 relowner; /* class owner */
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Oid relam; /* index access method; 0 if not an index */
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Oid relfilenode; /* identifier of physical storage file */
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int4 relpages; /* # of blocks (not always up-to-date) */
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float4 reltuples; /* # of tuples (not always up-to-date) */
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Oid reltoastrelid; /* OID of toast table; 0 if none */
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Oid reltoastidxid; /* if toast table, OID of chunk_id index */
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bool relhasindex; /* T if has (or has had) any indexes */
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bool relisshared; /* T if shared across databases */
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char relkind; /* see RELKIND_xxx constants below */
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int2 relnatts; /* number of user attributes */
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/*
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* Class pg_attribute must contain exactly "relnatts" user attributes
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* (with attnums ranging from 1 to relnatts) for this class. It may
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* also contain entries with negative attnums for system attributes.
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*/
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int2 relchecks; /* # of CHECK constraints for class */
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int2 reltriggers; /* # of TRIGGERs */
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int2 relukeys; /* # of Unique keys (not used) */
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int2 relfkeys; /* # of FOREIGN KEYs (not used) */
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int2 relrefs; /* # of references to this rel (not used) */
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bool relhasoids; /* T if we generate OIDs for rows of rel */
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bool relhaspkey; /* has PRIMARY KEY index */
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bool relhasrules; /* has associated rules */
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bool relhassubclass; /* has derived classes */
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/*
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* relacl may or may not be present, see note above!
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*/
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aclitem relacl[1]; /* we declare this just for the catalog */
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} FormData_pg_class;
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/* Size of fixed part of pg_class tuples, not counting relacl or padding */
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#define CLASS_TUPLE_SIZE \
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(offsetof(FormData_pg_class,relhassubclass) + sizeof(bool))
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/* ----------------
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* Form_pg_class corresponds to a pointer to a tuple with
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* the format of pg_class relation.
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* ----------------
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*/
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typedef FormData_pg_class *Form_pg_class;
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/* ----------------
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* compiler constants for pg_class
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* ----------------
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*/
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/* ----------------
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* Natts_pg_class_fixed is used to tell routines that insert new
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* pg_class tuples (as opposed to replacing old ones) that there's no
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* relacl field. This is a kluge.
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* ----------------
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*/
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#define Natts_pg_class_fixed 23
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#define Natts_pg_class 24
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#define Anum_pg_class_relname 1
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#define Anum_pg_class_relnamespace 2
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#define Anum_pg_class_reltype 3
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#define Anum_pg_class_relowner 4
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#define Anum_pg_class_relam 5
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#define Anum_pg_class_relfilenode 6
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#define Anum_pg_class_relpages 7
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#define Anum_pg_class_reltuples 8
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#define Anum_pg_class_reltoastrelid 9
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#define Anum_pg_class_reltoastidxid 10
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#define Anum_pg_class_relhasindex 11
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#define Anum_pg_class_relisshared 12
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#define Anum_pg_class_relkind 13
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#define Anum_pg_class_relnatts 14
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#define Anum_pg_class_relchecks 15
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#define Anum_pg_class_reltriggers 16
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#define Anum_pg_class_relukeys 17
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#define Anum_pg_class_relfkeys 18
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#define Anum_pg_class_relrefs 19
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#define Anum_pg_class_relhasoids 20
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#define Anum_pg_class_relhaspkey 21
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#define Anum_pg_class_relhasrules 22
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#define Anum_pg_class_relhassubclass 23
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#define Anum_pg_class_relacl 24
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/* ----------------
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* initial contents of pg_class
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*
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* NOTE: only "bootstrapped" relations need to be declared here.
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* ----------------
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*/
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DATA(insert OID = 1247 ( pg_type PGNSP 71 PGUID 0 1247 0 0 0 0 f f r 20 0 0 0 0 0 t f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1249 ( pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 f f r 17 0 0 0 0 0 f f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1255 ( pg_proc PGNSP 81 PGUID 0 1255 0 0 0 0 f f r 15 0 0 0 0 0 t f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1259 ( pg_class PGNSP 83 PGUID 0 1259 0 0 0 0 f f r 24 0 0 0 0 0 t f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1260 ( pg_shadow PGNSP 86 PGUID 0 1260 0 0 0 0 f t r 8 0 0 0 0 0 f f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1261 ( pg_group PGNSP 87 PGUID 0 1261 0 0 0 0 f t r 3 0 0 0 0 0 f f f f _null_ ));
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DESCR("");
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DATA(insert OID = 1262 ( pg_database PGNSP 88 PGUID 0 1262 0 0 0 0 f t r 11 0 0 0 0 0 t f f f _null_ ));
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DESCR("");
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DATA(insert OID = 376 ( pg_xactlock PGNSP 0 PGUID 0 0 0 0 0 0 f t s 1 0 0 0 0 0 f f f f _null_ ));
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DESCR("");
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#define RelOid_pg_type 1247
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#define RelOid_pg_attribute 1249
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#define RelOid_pg_proc 1255
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#define RelOid_pg_class 1259
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#define RelOid_pg_shadow 1260
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#define RelOid_pg_group 1261
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#define RelOid_pg_database 1262
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/* Xact lock pseudo-table */
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#define XactLockTableId 376
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#define RELKIND_INDEX 'i' /* secondary index */
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#define RELKIND_RELATION 'r' /* ordinary cataloged heap */
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#define RELKIND_SPECIAL 's' /* special (non-heap) */
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#define RELKIND_SEQUENCE 'S' /* SEQUENCE relation */
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#define RELKIND_UNCATALOGED 'u' /* temporary heap */
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#define RELKIND_TOASTVALUE 't' /* moved off huge values */
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#define RELKIND_VIEW 'v' /* view */
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#define RELKIND_COMPOSITE_TYPE 'c' /* composite type */
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#endif /* PG_CLASS_H */
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