1
/*-------------------------------------------------------------------------
4
* definition of the system "index" relation (pg_index)
5
* along with the relation's initial contents.
8
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
9
* Portions Copyright (c) 1994, Regents of the University of California
14
* the genbki.sh script reads this file and generates .bki
15
* information from the DATA() statements.
17
*-------------------------------------------------------------------------
22
#include "catalog/genbki.h"
25
* pg_index definition. cpp turns this into
26
* typedef struct FormData_pg_index.
29
#define IndexRelationId 2610
31
CATALOG(pg_index,2610) BKI_WITHOUT_OIDS
33
Oid indexrelid; /* OID of the index */
34
Oid indrelid; /* OID of the relation it indexes */
35
int2 indnatts; /* number of columns in index */
36
bool indisunique; /* is this a unique index? */
37
bool indisprimary; /* is this index for primary key? */
38
bool indisclustered; /* is this the index last clustered by? */
39
bool indisvalid; /* is this index valid for use by queries? */
40
bool indcheckxmin; /* must we wait for xmin to be old? */
41
bool indisready; /* is this index ready for inserts? */
43
/* VARIABLE LENGTH FIELDS: */
44
int2vector indkey; /* column numbers of indexed cols, or 0 */
45
oidvector indclass; /* opclass identifiers */
46
int2vector indoption; /* per-column flags (AM-specific meanings) */
47
text indexprs; /* expression trees for index attributes that
48
* are not simple column references; one for
49
* each zero entry in indkey[] */
50
text indpred; /* expression tree for predicate, if a partial
55
* Form_pg_index corresponds to a pointer to a tuple with
56
* the format of pg_index relation.
59
typedef FormData_pg_index *Form_pg_index;
62
* compiler constants for pg_index
65
#define Natts_pg_index 14
66
#define Anum_pg_index_indexrelid 1
67
#define Anum_pg_index_indrelid 2
68
#define Anum_pg_index_indnatts 3
69
#define Anum_pg_index_indisunique 4
70
#define Anum_pg_index_indisprimary 5
71
#define Anum_pg_index_indisclustered 6
72
#define Anum_pg_index_indisvalid 7
73
#define Anum_pg_index_indcheckxmin 8
74
#define Anum_pg_index_indisready 9
75
#define Anum_pg_index_indkey 10
76
#define Anum_pg_index_indclass 11
77
#define Anum_pg_index_indoption 12
78
#define Anum_pg_index_indexprs 13
79
#define Anum_pg_index_indpred 14
82
* Index AMs that support ordered scans must support these two indoption
83
* bits. Otherwise, the content of the per-column indoption fields is
84
* open for future definition.
86
#define INDOPTION_DESC 0x0001 /* values are in reverse order */
87
#define INDOPTION_NULLS_FIRST 0x0002 /* NULLs are first instead of last */
89
#endif /* PG_INDEX_H */