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/*-------------------------------------------------------------------------
*
* pg_index.h--
* definition of the system "index" relation (pg_index)
* along with the relation's initial contents.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_index.h,v 1.2 1996/10/31 09:47:31 scrappy Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
* information from the DATA() statements.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_INDEX_H
#define PG_INDEX_H
/* ----------------
* postgres.h contains the system type definintions and the
* CATALOG(), BOOTSTRAP and DATA() sugar words so this file
* can be read by both genbki.sh and the C compiler.
* ----------------
*/
/* ----------------
* pg_index definition. cpp turns this into
* typedef struct FormData_pg_index. The oid of the index relation
* is stored in indexrelid; the oid of the indexed relation is stored
* in indrelid.
* ----------------
*/
CATALOG(pg_index) {
Oid indexrelid;
Oid indrelid;
Oid indproc; /* registered procedure for functional index */
int28 indkey;
oid8 indclass;
bool indisclustered;
bool indisarchived;
text indpred; /* query plan for partial index predicate */
bool indislossy; /* do we fetch false tuples (lossy compression)? */
bool indhaskeytype; /* does key type != attribute type? */
} FormData_pg_index;
#define INDEX_MAX_KEYS 8 /* maximum number of keys in an index definition */
/* ----------------
* Form_pg_index corresponds to a pointer to a tuple with
* the format of pg_index relation.
* ----------------
*/
typedef FormData_pg_index *IndexTupleForm;
/* ----------------
* compiler constants for pg_index
* ----------------
*/
#define Natts_pg_index 10
#define Anum_pg_index_indexrelid 1
#define Anum_pg_index_indrelid 2
#define Anum_pg_index_indproc 3
#define Anum_pg_index_indkey 4
#define Anum_pg_index_indclass 5
#define Anum_pg_index_indisclustered 6
#define Anum_pg_index_indisarchived 7
#define Anum_pg_index_indpred 8
#define Anum_pg_index_indislossy 9
#define Anum_pg_index_indhaskeytype 10
#endif /* PG_INDEX_H */
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