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07a65b2255
Changes:
* Unique index capability works using the syntax 'create unique
index'.
* Duplicate OID's in the system tables are removed. I put
little scripts called 'duplicate_oids' and 'find_oid' in
include/catalog that help to find and remove duplicate OID's.
I also moved 'unused_oids' from backend/catalog to
include/catalog, since it has to be in the same directory
as the include files in order to work.
* The backend tries converting the name of a function or aggregate
to all lowercase if the original name given doesn't work (mostly
for compatibility with ODBC).
* You can 'SELECT NULL' to your heart's content.
* I put my _bt_updateitem fix in instead, which uses
_bt_insertonpg so that even if the new key is so big that
the page has to be split, everything still works.
* All literal references to system catalog OID's have been
replaced with references to define'd constants from the catalog
header files.
* I added a couple of node copy functions. I think this was a
preliminary attempt to get rules to work.
82 lines
2.5 KiB
C
82 lines
2.5 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 1.3 1996/11/13 20:50:57 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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/* ----------------
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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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/*
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* it seems that all variable length fields should go at the _end_,
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* because the system cache routines only copy the fields up to the
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* first variable length field. so I moved indislossy, indhaskeytype,
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* and indisunique before indpred. --djm 8/20/96
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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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bool indislossy; /* do we fetch false tuples (lossy compression)? */
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bool indhaskeytype; /* does key type != attribute type? */
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bool indisunique; /* is this a unique index? */
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text indpred; /* query plan for partial index predicate */
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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 11
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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_indislossy 8
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#define Anum_pg_index_indhaskeytype 9
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#define Anum_pg_index_indisunique 10
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#define Anum_pg_index_indpred 11
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#endif /* PG_INDEX_H */
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