1 /*-------------------------------------------------------------------------
4 * definition of the system "access method" relation (pg_am)
5 * along with the relation's initial contents.
8 * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
9 * Portions Copyright (c) 1994, Regents of the University of California
11 * $PostgreSQL: pgsql/src/include/catalog/pg_am.h,v 1.35 2005/06/20 10:29:37 teodor Exp $
14 * the genbki.sh script reads this file and generates .bki
15 * information from the DATA() statements.
17 * XXX do NOT break up DATA() statements into multiple lines!
18 * the scripts are not as smart as you might think...
20 *-------------------------------------------------------------------------
26 * postgres.h contains the system type definitions and the
27 * CATALOG(), BKI_BOOTSTRAP and DATA() sugar words so this file
28 * can be read by both genbki.sh and the C compiler.
33 * pg_am definition. cpp turns this into
34 * typedef struct FormData_pg_am
37 #define AccessMethodRelationId 2601
41 NameData amname; /* access method name */
42 int2 amstrategies; /* total NUMBER of strategies (operators)
43 * by which we can traverse/search this AM */
44 int2 amsupport; /* total NUMBER of support functions that
46 int2 amorderstrategy;/* if this AM has a sort order, the
47 * strategy number of the sort operator.
48 * Zero if AM is not ordered. */
49 bool amcanunique; /* does AM support UNIQUE indexes? */
50 bool amcanmulticol; /* does AM support multi-column indexes? */
51 bool amoptionalkey; /* can query omit key for the first column? */
52 bool amindexnulls; /* does AM support NULL index entries? */
53 bool amconcurrent; /* does AM support concurrent updates? */
54 regproc aminsert; /* "insert this tuple" function */
55 regproc ambeginscan; /* "start new scan" function */
56 regproc amgettuple; /* "next valid tuple" function */
57 regproc amgetmulti; /* "fetch multiple tuples" function */
58 regproc amrescan; /* "restart this scan" function */
59 regproc amendscan; /* "end this scan" function */
60 regproc ammarkpos; /* "mark current scan position" function */
61 regproc amrestrpos; /* "restore marked scan position" function */
62 regproc ambuild; /* "build new index" function */
63 regproc ambulkdelete; /* bulk-delete function */
64 regproc amvacuumcleanup; /* post-VACUUM cleanup function */
65 regproc amcostestimate; /* estimate cost of an indexscan */
69 * Form_pg_am corresponds to a pointer to a tuple with
70 * the format of pg_am relation.
73 typedef FormData_pg_am *Form_pg_am;
76 * compiler constants for pg_am
79 #define Natts_pg_am 21
80 #define Anum_pg_am_amname 1
81 #define Anum_pg_am_amstrategies 2
82 #define Anum_pg_am_amsupport 3
83 #define Anum_pg_am_amorderstrategy 4
84 #define Anum_pg_am_amcanunique 5
85 #define Anum_pg_am_amcanmulticol 6
86 #define Anum_pg_am_amoptionalkey 7
87 #define Anum_pg_am_amindexnulls 8
88 #define Anum_pg_am_amconcurrent 9
89 #define Anum_pg_am_aminsert 10
90 #define Anum_pg_am_ambeginscan 11
91 #define Anum_pg_am_amgettuple 12
92 #define Anum_pg_am_amgetmulti 13
93 #define Anum_pg_am_amrescan 14
94 #define Anum_pg_am_amendscan 15
95 #define Anum_pg_am_ammarkpos 16
96 #define Anum_pg_am_amrestrpos 17
97 #define Anum_pg_am_ambuild 18
98 #define Anum_pg_am_ambulkdelete 19
99 #define Anum_pg_am_amvacuumcleanup 20
100 #define Anum_pg_am_amcostestimate 21
103 * initial contents of pg_am
107 DATA(insert OID = 402 ( rtree 8 3 0 f f f f f rtinsert rtbeginscan rtgettuple rtgetmulti rtrescan rtendscan rtmarkpos rtrestrpos rtbuild rtbulkdelete - rtcostestimate ));
108 DESCR("r-tree index access method");
109 DATA(insert OID = 403 ( btree 5 1 1 t t t t t btinsert btbeginscan btgettuple btgetmulti btrescan btendscan btmarkpos btrestrpos btbuild btbulkdelete btvacuumcleanup btcostestimate ));
110 DESCR("b-tree index access method");
111 #define BTREE_AM_OID 403
112 DATA(insert OID = 405 ( hash 1 1 0 f f f f t hashinsert hashbeginscan hashgettuple hashgetmulti hashrescan hashendscan hashmarkpos hashrestrpos hashbuild hashbulkdelete - hashcostestimate ));
113 DESCR("hash index access method");
114 #define HASH_AM_OID 405
115 DATA(insert OID = 783 ( gist 100 7 0 f t f f f gistinsert gistbeginscan gistgettuple gistgetmulti gistrescan gistendscan gistmarkpos gistrestrpos gistbuild gistbulkdelete gistvacuumcleanup gistcostestimate ));
116 DESCR("GiST index access method");
117 #define GIST_AM_OID 783