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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_index.h--
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* definition of the system "index" relation (pg_index)
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* along with the relation's initial contents.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: pg_index.h,v 1.1 1996/08/28 01:56:49 scrappy 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_INDEX_H
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#define PG_INDEX_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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#include "postgres.h"
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/* ----------------
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* pg_index definition. cpp turns this into
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* typedef struct FormData_pg_index. The oid of the index relation
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* is stored in indexrelid; the oid of the indexed relation is stored
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* in indrelid.
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* ----------------
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*/
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CATALOG(pg_index) {
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Oid indexrelid;
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Oid indrelid;
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Oid indproc; /* registered procedure for functional index */
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int28 indkey;
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oid8 indclass;
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bool indisclustered;
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bool indisarchived;
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text indpred; /* query plan for partial index predicate */
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bool indislossy; /* do we fetch false tuples (lossy compression)? */
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bool indhaskeytype; /* does key type != attribute type? */
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} FormData_pg_index;
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#define INDEX_MAX_KEYS 8 /* maximum number of keys in an index definition */
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/* ----------------
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* Form_pg_index corresponds to a pointer to a tuple with
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* the format of pg_index relation.
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* ----------------
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*/
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typedef FormData_pg_index *IndexTupleForm;
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/* ----------------
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* compiler constants for pg_index
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* ----------------
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*/
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#define Natts_pg_index 10
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#define Anum_pg_index_indexrelid 1
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#define Anum_pg_index_indrelid 2
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#define Anum_pg_index_indproc 3
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#define Anum_pg_index_indkey 4
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#define Anum_pg_index_indclass 5
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#define Anum_pg_index_indisclustered 6
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#define Anum_pg_index_indisarchived 7
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#define Anum_pg_index_indpred 8
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#define Anum_pg_index_indislossy 9
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#define Anum_pg_index_indhaskeytype 10
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#endif /* PG_INDEX_H */
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