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Add system catalog columns pg_constraint.conindid and pg_trigger.tgconstrindid.

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conindid is the index supporting a constraint.  We can use this not only for
unique/primary-key constraints, but also foreign-key constraints, which
depend on the unique index that constrains the referenced columns.
tgconstrindid is just copied from the constraint's conindid field, or is
zero for triggers not associated with constraints.

This is mainly intended as infrastructure for upcoming patches, but it has
some virtue in itself, since it exposes a relationship that you formerly
had to grovel in pg_depend to determine.  I simplified one information_schema
view accordingly.  (There is a pg_dump query that could also use conindid,
but I left it alone because it wasn't clear it'd get any faster.)
REL8_5_ALPHA1_BRANCH
Tom Lane 16 years ago
parent 36942504fc
commit c1b9ec24ef
15 changed files with 120 additions and 78 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 18
      doc/src/sgml/catalogs.sgml
  2. 5
      doc/src/sgml/trigger.sgml
  3. 4
      src/backend/catalog/heap.c
  4. 4
      src/backend/catalog/index.c
  5. 19
      src/backend/catalog/information_schema.sql
  6. 11
      src/backend/catalog/pg_constraint.c
  7. 30
      src/backend/commands/tablecmds.c
  8. 17
      src/backend/commands/trigger.c
  9. 4
      src/backend/commands/typecmds.c
  10. 5
      src/backend/tcop/utility.c
  11. 4
      src/include/catalog/catversion.h
  12. 43
      src/include/catalog/pg_constraint.h
  13. 26
      src/include/catalog/pg_trigger.h
  14. 5
      src/include/commands/trigger.h
  15. 3
      src/include/utils/rel.h

18
doc/src/sgml/catalogs.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.201 2009/07/01 23:57:33 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.202 2009/07/28 02:56:29 tgl Exp $ -->
<!--
Documentation of the system catalogs, directed toward PostgreSQL developers
-->
@ -1748,6 +1748,14 @@
<entry>The domain this constraint is on; 0 if not a domain constraint</entry>
</row>
<row>
<entry><structfield>conindid</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-class"><structname>pg_class</structname></link>.oid</literal></entry>
<entry>The index supporting this constraint, if it's a unique, primary
key, or foreign key constraint; else 0</entry>
</row>
<row>
<entry><structfield>confrelid</structfield></entry>
<entry><type>oid</type></entry>
@ -4510,6 +4518,13 @@
<entry>The table referenced by a referential integrity constraint</entry>
</row>
<row>
<entry><structfield>tgconstrindid</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-class"><structname>pg_class</structname></link>.oid</literal></entry>
<entry>The index supporting a unique, primary key, or referential integrity constraint</entry>
</row>
<row>
<entry><structfield>tgconstraint</structfield></entry>
<entry><type>oid</type></entry>
@ -4560,6 +4575,7 @@
When <structfield>tgconstraint</> is nonzero,
<structfield>tgisconstraint</> must be true, and
<structfield>tgconstrname</>, <structfield>tgconstrrelid</>,
<structfield>tgconstrindid</>,
<structfield>tgdeferrable</>, <structfield>tginitdeferred</> are redundant
with the referenced <structname>pg_constraint</> entry. The reason we
keep these fields is that we support <quote>stand-alone</> constraint

5
doc/src/sgml/trigger.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/trigger.sgml,v 1.56 2009/05/27 01:18:06 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/trigger.sgml,v 1.57 2009/07/28 02:56:29 tgl Exp $ -->
<chapter id="triggers">
<title>Triggers</title>
@ -486,6 +486,7 @@ typedef struct Trigger
bool tgenabled;
bool tgisconstraint;
Oid tgconstrrelid;
Oid tgconstrindid;
Oid tgconstraint;
bool tgdeferrable;
bool tginitdeferred;
@ -497,7 +498,7 @@ typedef struct Trigger
</programlisting>
where <structfield>tgname</> is the trigger's name,
<structfield>tgnargs</> is number of arguments in
<structfield>tgnargs</> is the number of arguments in
<structfield>tgargs</>, and <structfield>tgargs</> is an array of
pointers to the arguments specified in the <command>CREATE
TRIGGER</command> statement. The other members are for internal use

4
src/backend/catalog/heap.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.354 2009/06/11 14:48:54 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.355 2009/07/28 02:56:29 tgl Exp $
*
*
* INTERFACE ROUTINES
@ -1659,6 +1659,7 @@ StoreRelCheck(Relation rel, char *ccname, Node *expr,
attNos, /* attrs in the constraint */
keycount, /* # attrs in the constraint */
InvalidOid, /* not a domain constraint */
InvalidOid, /* no associated index */
InvalidOid, /* Foreign key fields */
NULL,
NULL,
@ -1668,7 +1669,6 @@ StoreRelCheck(Relation rel, char *ccname, Node *expr,
' ',
' ',
' ',
InvalidOid, /* no associated index */
expr, /* Tree form check constraint */
ccbin, /* Binary form check constraint */
ccsrc, /* Source form check constraint */

4
src/backend/catalog/index.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.318 2009/06/11 14:48:55 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.319 2009/07/28 02:56:29 tgl Exp $
*
*
* INTERFACE ROUTINES
@ -732,6 +732,7 @@ index_create(Oid heapRelationId,
indexInfo->ii_KeyAttrNumbers,
indexInfo->ii_NumIndexAttrs,
InvalidOid, /* no domain */
indexRelationId, /* index OID */
InvalidOid, /* no foreign key */
NULL,
NULL,
@ -741,7 +742,6 @@ index_create(Oid heapRelationId,
' ',
' ',
' ',
InvalidOid, /* no associated index */
NULL, /* no check constraint */
NULL,
NULL,

19
src/backend/catalog/information_schema.sql
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@ -4,7 +4,7 @@
*
* Copyright (c) 2003-2009, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.57 2009/07/13 20:25:57 petere Exp $
* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.58 2009/07/28 02:56:29 tgl Exp $
*/
/*
@ -44,17 +44,6 @@ CREATE FUNCTION _pg_keysequal(smallint[], smallint[]) RETURNS boolean
LANGUAGE sql IMMUTABLE -- intentionally not STRICT, to allow inlining
AS 'select $1 <@ $2 and $2 <@ $1';
/* Get the OID of the unique index that an FK constraint depends on */
CREATE FUNCTION _pg_underlying_index(oid) RETURNS oid
LANGUAGE sql STRICT STABLE
AS $$
SELECT refobjid FROM pg_catalog.pg_depend
WHERE classid = 'pg_catalog.pg_constraint'::pg_catalog.regclass AND
objid = $1 AND
refclassid = 'pg_catalog.pg_class'::pg_catalog.regclass AND
refobjsubid = 0 AND deptype = 'n'
$$;
/* Given an index's OID and an underlying-table column number, return the
* column's position in the index (NULL if not there) */
CREATE FUNCTION _pg_index_position(oid, smallint) RETURNS int
@ -957,15 +946,15 @@ CREATE VIEW key_column_usage AS
CAST(a.attname AS sql_identifier) AS column_name,
CAST((ss.x).n AS cardinal_number) AS ordinal_position,
CAST(CASE WHEN contype = 'f' THEN
_pg_index_position(_pg_underlying_index(ss.coid),
ss.confkey[(ss.x).n])
_pg_index_position(ss.conindid, ss.confkey[(ss.x).n])
ELSE NULL
END AS cardinal_number)
AS position_in_unique_constraint
FROM pg_attribute a,
(SELECT r.oid AS roid, r.relname, r.relowner,
nc.nspname AS nc_nspname, nr.nspname AS nr_nspname,
c.oid AS coid, c.conname, c.contype, c.confkey, c.confrelid,
c.oid AS coid, c.conname, c.contype, c.conindid,
c.confkey, c.confrelid,
_pg_expandarray(c.conkey) AS x
FROM pg_namespace nr, pg_class r, pg_namespace nc,
pg_constraint c

11
src/backend/catalog/pg_constraint.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/pg_constraint.c,v 1.46 2009/07/16 06:33:42 petere Exp $
* $PostgreSQL: pgsql/src/backend/catalog/pg_constraint.c,v 1.47 2009/07/28 02:56:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -49,6 +49,7 @@ CreateConstraintEntry(const char *constraintName,
const int16 *constraintKey,
int constraintNKeys,
Oid domainId,
Oid indexRelId,
Oid foreignRelId,
const int16 *foreignKey,
const Oid *pfEqOp,
@ -58,7 +59,6 @@ CreateConstraintEntry(const char *constraintName,
char foreignUpdateType,
char foreignDeleteType,
char foreignMatchType,
Oid indexRelId,
Node *conExpr,
const char *conBin,
const char *conSrc,
@ -144,6 +144,7 @@ CreateConstraintEntry(const char *constraintName,
values[Anum_pg_constraint_condeferred - 1] = BoolGetDatum(isDeferred);
values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(relId);
values[Anum_pg_constraint_contypid - 1] = ObjectIdGetDatum(domainId);
values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(indexRelId);
values[Anum_pg_constraint_confrelid - 1] = ObjectIdGetDatum(foreignRelId);
values[Anum_pg_constraint_confupdtype - 1] = CharGetDatum(foreignUpdateType);
values[Anum_pg_constraint_confdeltype - 1] = CharGetDatum(foreignDeleteType);
@ -273,11 +274,13 @@ CreateConstraintEntry(const char *constraintName,
}
}
if (OidIsValid(indexRelId))
if (OidIsValid(indexRelId) && constraintType == CONSTRAINT_FOREIGN)
{
/*
* Register normal dependency on the unique index that supports a
* foreign-key constraint.
* foreign-key constraint. (Note: for indexes associated with
* unique or primary-key constraints, the dependency runs the other
* way, and is not made here.)
*/
ObjectAddress relobject;

30
src/backend/commands/tablecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.291 2009/07/20 02:42:27 adunstan Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.292 2009/07/28 02:56:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -152,6 +152,7 @@ typedef struct NewConstraint
char *name; /* Constraint name, or NULL if none */
ConstrType contype; /* CHECK or FOREIGN */
Oid refrelid; /* PK rel, if FOREIGN */
Oid refindid; /* OID of PK's index, if FOREIGN */
Oid conid; /* OID of pg_constraint entry, if FOREIGN */
Node *qual; /* Check expr or FkConstraint struct */
List *qualstate; /* Execution state for CHECK */
@ -247,9 +248,10 @@ static Oid transformFkeyCheckAttrs(Relation pkrel,
Oid *opclasses);
static void checkFkeyPermissions(Relation rel, int16 *attnums, int natts);
static void validateForeignKeyConstraint(FkConstraint *fkconstraint,
Relation rel, Relation pkrel, Oid constraintOid);
Relation rel, Relation pkrel,
Oid pkindOid, Oid constraintOid);
static void createForeignKeyTriggers(Relation rel, FkConstraint *fkconstraint,
Oid constraintOid);
Oid constraintOid, Oid indexOid);
static void ATController(Relation rel, List *cmds, bool recurse);
static void ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
bool recurse, bool recursing);
@ -2915,6 +2917,7 @@ ATRewriteTables(List **wqueue)
refrel = heap_open(con->refrelid, RowShareLock);
validateForeignKeyConstraint(fkconstraint, rel, refrel,
con->refindid,
con->conid);
heap_close(refrel, NoLock);
@ -4819,6 +4822,7 @@ ATAddForeignKeyConstraint(AlteredTableInfo *tab, Relation rel,
numfks,
InvalidOid, /* not a domain
* constraint */
indexOid,
RelationGetRelid(pkrel),
pkattnum,
pfeqoperators,
@ -4828,7 +4832,6 @@ ATAddForeignKeyConstraint(AlteredTableInfo *tab, Relation rel,
fkconstraint->fk_upd_action,
fkconstraint->fk_del_action,
fkconstraint->fk_matchtype,
indexOid,
NULL, /* no check constraint */
NULL,
NULL,
@ -4838,7 +4841,7 @@ ATAddForeignKeyConstraint(AlteredTableInfo *tab, Relation rel,
/*
* Create the triggers that will enforce the constraint.
*/
createForeignKeyTriggers(rel, fkconstraint, constrOid);
createForeignKeyTriggers(rel, fkconstraint, constrOid, indexOid);
/*
* Tell Phase 3 to check that the constraint is satisfied by existing rows
@ -4852,6 +4855,7 @@ ATAddForeignKeyConstraint(AlteredTableInfo *tab, Relation rel,
newcon->name = fkconstraint->constr_name;
newcon->contype = CONSTR_FOREIGN;
newcon->refrelid = RelationGetRelid(pkrel);
newcon->refindid = indexOid;
newcon->conid = constrOid;
newcon->qual = (Node *) fkconstraint;
@ -5141,6 +5145,7 @@ static void
validateForeignKeyConstraint(FkConstraint *fkconstraint,
Relation rel,
Relation pkrel,
Oid pkindOid,
Oid constraintOid)
{
HeapScanDesc scan;
@ -5156,6 +5161,7 @@ validateForeignKeyConstraint(FkConstraint *fkconstraint,
trig.tgenabled = TRIGGER_FIRES_ON_ORIGIN;
trig.tgisconstraint = TRUE;
trig.tgconstrrelid = RelationGetRelid(pkrel);
trig.tgconstrindid = pkindOid;
trig.tgconstraint = constraintOid;
trig.tgdeferrable = FALSE;
trig.tginitdeferred = FALSE;
@ -5209,7 +5215,7 @@ validateForeignKeyConstraint(FkConstraint *fkconstraint,
static void
CreateFKCheckTrigger(RangeVar *myRel, FkConstraint *fkconstraint,
Oid constraintOid, bool on_insert)
Oid constraintOid, Oid indexOid, bool on_insert)
{
CreateTrigStmt *fk_trigger;
@ -5237,7 +5243,7 @@ CreateFKCheckTrigger(RangeVar *myRel, FkConstraint *fkconstraint,
fk_trigger->constrrel = fkconstraint->pktable;
fk_trigger->args = NIL;
(void) CreateTrigger(fk_trigger, constraintOid, false);
(void) CreateTrigger(fk_trigger, constraintOid, indexOid, false);
/* Make changes-so-far visible */
CommandCounterIncrement();
@ -5248,7 +5254,7 @@ CreateFKCheckTrigger(RangeVar *myRel, FkConstraint *fkconstraint,
*/
static void
createForeignKeyTriggers(Relation rel, FkConstraint *fkconstraint,
Oid constraintOid)
Oid constraintOid, Oid indexOid)
{
RangeVar *myRel;
CreateTrigStmt *fk_trigger;
@ -5267,8 +5273,8 @@ createForeignKeyTriggers(Relation rel, FkConstraint *fkconstraint,
* Build and execute a CREATE CONSTRAINT TRIGGER statement for the CHECK
* action for both INSERTs and UPDATEs on the referencing table.
*/
CreateFKCheckTrigger(myRel, fkconstraint, constraintOid, true);
CreateFKCheckTrigger(myRel, fkconstraint, constraintOid, false);
CreateFKCheckTrigger(myRel, fkconstraint, constraintOid, indexOid, true);
CreateFKCheckTrigger(myRel, fkconstraint, constraintOid, indexOid, false);
/*
* Build and execute a CREATE CONSTRAINT TRIGGER statement for the ON
@ -5316,7 +5322,7 @@ createForeignKeyTriggers(Relation rel, FkConstraint *fkconstraint,
}
fk_trigger->args = NIL;
(void) CreateTrigger(fk_trigger, constraintOid, false);
(void) CreateTrigger(fk_trigger, constraintOid, indexOid, false);
/* Make changes-so-far visible */
CommandCounterIncrement();
@ -5367,7 +5373,7 @@ createForeignKeyTriggers(Relation rel, FkConstraint *fkconstraint,
}
fk_trigger->args = NIL;
(void) CreateTrigger(fk_trigger, constraintOid, false);
(void) CreateTrigger(fk_trigger, constraintOid, indexOid, false);
}
/*

17
src/backend/commands/trigger.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/trigger.c,v 1.248 2009/06/18 01:27:02 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/trigger.c,v 1.249 2009/07/28 02:56:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -74,6 +74,9 @@ static void AfterTriggerSaveEvent(ResultRelInfo *relinfo, int event,
* be made to link the trigger to that constraint. constraintOid is zero when
* executing a user-entered CREATE TRIGGER command.
*
* indexOid, if nonzero, is the OID of an index associated with the constraint.
* We do nothing with this except store it into pg_trigger.tgconstrindid.
*
* If checkPermissions is true we require ACL_TRIGGER permissions on the
* relation. If not, the caller already checked permissions. (This is
* currently redundant with constraintOid being zero, but it's clearer to
@ -83,7 +86,9 @@ static void AfterTriggerSaveEvent(ResultRelInfo *relinfo, int event,
* but a foreign-key constraint. This is a kluge for backwards compatibility.
*/
Oid
CreateTrigger(CreateTrigStmt *stmt, Oid constraintOid, bool checkPermissions)
CreateTrigger(CreateTrigStmt *stmt,
Oid constraintOid, Oid indexOid,
bool checkPermissions)
{
int16 tgtype;
int2vector *tgattr;
@ -276,6 +281,7 @@ CreateTrigger(CreateTrigStmt *stmt, Oid constraintOid, bool checkPermissions)
values[Anum_pg_trigger_tgconstrname - 1] = DirectFunctionCall1(namein,
CStringGetDatum(constrname));
values[Anum_pg_trigger_tgconstrrelid - 1] = ObjectIdGetDatum(constrrelid);
values[Anum_pg_trigger_tgconstrindid - 1] = ObjectIdGetDatum(indexOid);
values[Anum_pg_trigger_tgconstraint - 1] = ObjectIdGetDatum(constraintOid);
values[Anum_pg_trigger_tgdeferrable - 1] = BoolGetDatum(stmt->deferrable);
values[Anum_pg_trigger_tginitdeferred - 1] = BoolGetDatum(stmt->initdeferred);
@ -410,13 +416,15 @@ CreateTrigger(CreateTrigStmt *stmt, Oid constraintOid, bool checkPermissions)
referenced.objectId = RelationGetRelid(rel);
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
if (constrrelid != InvalidOid)
if (OidIsValid(constrrelid))
{
referenced.classId = RelationRelationId;
referenced.objectId = constrrelid;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
}
/* Not possible to have an index dependency in this case */
Assert(!OidIsValid(indexOid));
}
/* Keep lock on target rel until end of xact */
@ -1122,6 +1130,7 @@ RelationBuildTriggers(Relation relation)
build->tgenabled = pg_trigger->tgenabled;
build->tgisconstraint = pg_trigger->tgisconstraint;
build->tgconstrrelid = pg_trigger->tgconstrrelid;
build->tgconstrindid = pg_trigger->tgconstrindid;
build->tgconstraint = pg_trigger->tgconstraint;
build->tgdeferrable = pg_trigger->tgdeferrable;
build->tginitdeferred = pg_trigger->tginitdeferred;
@ -1467,6 +1476,8 @@ equalTriggerDescs(TriggerDesc *trigdesc1, TriggerDesc *trigdesc2)
return false;
if (trig1->tgconstrrelid != trig2->tgconstrrelid)
return false;
if (trig1->tgconstrindid != trig2->tgconstrindid)
return false;
if (trig1->tgconstraint != trig2->tgconstraint)
return false;
if (trig1->tgdeferrable != trig2->tgdeferrable)

4
src/backend/commands/typecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.135 2009/07/16 06:33:42 petere Exp $
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.136 2009/07/28 02:56:30 tgl Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@ -2293,6 +2293,7 @@ domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
NULL,
0,
domainOid, /* domain constraint */
InvalidOid, /* no associated index */
InvalidOid, /* Foreign key fields */
NULL,
NULL,
@ -2302,7 +2303,6 @@ domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
' ',
' ',
' ',
InvalidOid,
expr, /* Tree form check constraint */
ccbin, /* Binary form check constraint */
ccsrc, /* Source form check constraint */

5
src/backend/tcop/utility.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.311 2009/07/26 23:34:18 tgl Exp $
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.312 2009/07/28 02:56:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -928,7 +928,8 @@ ProcessUtility(Node *parsetree,
break;
case T_CreateTrigStmt:
CreateTrigger((CreateTrigStmt *) parsetree, InvalidOid, true);
CreateTrigger((CreateTrigStmt *) parsetree,
InvalidOid, InvalidOid, true);
break;
case T_DropPropertyStmt:

4
src/include/catalog/catversion.h
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@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.532 2009/07/07 18:23:14 petere Exp $
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.533 2009/07/28 02:56:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200907071
#define CATALOG_VERSION_NO 200907271
#endif

43
src/include/catalog/pg_constraint.h
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_constraint.h,v 1.31 2009/07/16 06:33:45 petere Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_constraint.h,v 1.32 2009/07/28 02:56:31 tgl Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
@ -62,6 +62,16 @@ CATALOG(pg_constraint,2606)
*/
Oid contypid; /* domain this constraint constrains */
/*
* conindid links to the index supporting the constraint, if any;
* otherwise it's 0. This is used for unique and primary-key constraints,
* and less obviously for foreign-key constraints (where the index is
* a unique index on the referenced relation's referenced columns).
* Notice that the index is on conrelid in the first case but confrelid
* in the second.
*/
Oid conindid; /* index supporting this constraint */
/*
* These fields, plus confkey, are only meaningful for a foreign-key
* constraint. Otherwise confrelid is 0 and the char fields are spaces.
@ -131,7 +141,7 @@ typedef FormData_pg_constraint *Form_pg_constraint;
* compiler constants for pg_constraint
* ----------------
*/
#define Natts_pg_constraint 20
#define Natts_pg_constraint 21
#define Anum_pg_constraint_conname 1
#define Anum_pg_constraint_connamespace 2
#define Anum_pg_constraint_contype 3
@ -139,19 +149,20 @@ typedef FormData_pg_constraint *Form_pg_constraint;
#define Anum_pg_constraint_condeferred 5
#define Anum_pg_constraint_conrelid 6
#define Anum_pg_constraint_contypid 7
#define Anum_pg_constraint_confrelid 8
#define Anum_pg_constraint_confupdtype 9
#define Anum_pg_constraint_confdeltype 10
#define Anum_pg_constraint_confmatchtype 11
#define Anum_pg_constraint_conislocal 12
#define Anum_pg_constraint_coninhcount 13
#define Anum_pg_constraint_conkey 14
#define Anum_pg_constraint_confkey 15
#define Anum_pg_constraint_conpfeqop 16
#define Anum_pg_constraint_conppeqop 17
#define Anum_pg_constraint_conffeqop 18
#define Anum_pg_constraint_conbin 19
#define Anum_pg_constraint_consrc 20
#define Anum_pg_constraint_conindid 8
#define Anum_pg_constraint_confrelid 9
#define Anum_pg_constraint_confupdtype 10
#define Anum_pg_constraint_confdeltype 11
#define Anum_pg_constraint_confmatchtype 12
#define Anum_pg_constraint_conislocal 13
#define Anum_pg_constraint_coninhcount 14
#define Anum_pg_constraint_conkey 15
#define Anum_pg_constraint_confkey 16
#define Anum_pg_constraint_conpfeqop 17
#define Anum_pg_constraint_conppeqop 18
#define Anum_pg_constraint_conffeqop 19
#define Anum_pg_constraint_conbin 20
#define Anum_pg_constraint_consrc 21
/* Valid values for contype */
@ -188,6 +199,7 @@ extern Oid CreateConstraintEntry(const char *constraintName,
const int16 *constraintKey,
int constraintNKeys,
Oid domainId,
Oid indexRelId,
Oid foreignRelId,
const int16 *foreignKey,
const Oid *pfEqOp,
@ -197,7 +209,6 @@ extern Oid CreateConstraintEntry(const char *constraintName,
char foreignUpdateType,
char foreignDeleteType,
char foreignMatchType,
Oid indexRelId,
Node *conExpr,
const char *conBin,
const char *conSrc,

26
src/include/catalog/pg_trigger.h
Unescape View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_trigger.h,v 1.33 2009/01/01 17:23:58 momjian Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_trigger.h,v 1.34 2009/07/28 02:56:31 tgl Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
@ -26,10 +26,10 @@
* typedef struct FormData_pg_trigger
*
* Note: when tgconstraint is nonzero, tgisconstraint must be true, and
* tgconstrname, tgconstrrelid, tgdeferrable, tginitdeferred are redundant
* with the referenced pg_constraint entry. The reason we keep these fields
* is that we support "stand-alone" constraint triggers with no corresponding
* pg_constraint entry.
* tgconstrname, tgconstrrelid, tgconstrindid, tgdeferrable, tginitdeferred
* are redundant with the referenced pg_constraint entry. The reason we keep
* these fields is that we support "stand-alone" constraint triggers with no
* corresponding pg_constraint entry.
* ----------------
*/
#define TriggerRelationId 2620
@ -46,6 +46,7 @@ CATALOG(pg_trigger,2620)
bool tgisconstraint; /* trigger is a constraint trigger */
NameData tgconstrname; /* constraint name */
Oid tgconstrrelid; /* constraint's FROM table, if any */
Oid tgconstrindid; /* constraint's supporting index, if any */
Oid tgconstraint; /* owning pg_constraint entry, if any */
bool tgdeferrable; /* constraint trigger is deferrable */
bool tginitdeferred; /* constraint trigger is deferred initially */
@ -67,7 +68,7 @@ typedef FormData_pg_trigger *Form_pg_trigger;
* compiler constants for pg_trigger
* ----------------
*/
#define Natts_pg_trigger 14
#define Natts_pg_trigger 15
#define Anum_pg_trigger_tgrelid 1
#define Anum_pg_trigger_tgname 2
#define Anum_pg_trigger_tgfoid 3
@ -76,12 +77,13 @@ typedef FormData_pg_trigger *Form_pg_trigger;
#define Anum_pg_trigger_tgisconstraint 6
#define Anum_pg_trigger_tgconstrname 7
#define Anum_pg_trigger_tgconstrrelid 8
#define Anum_pg_trigger_tgconstraint 9
#define Anum_pg_trigger_tgdeferrable 10
#define Anum_pg_trigger_tginitdeferred 11
#define Anum_pg_trigger_tgnargs 12
#define Anum_pg_trigger_tgattr 13
#define Anum_pg_trigger_tgargs 14
#define Anum_pg_trigger_tgconstrindid 9
#define Anum_pg_trigger_tgconstraint 10
#define Anum_pg_trigger_tgdeferrable 11
#define Anum_pg_trigger_tginitdeferred 12
#define Anum_pg_trigger_tgnargs 13
#define Anum_pg_trigger_tgattr 14
#define Anum_pg_trigger_tgargs 15
/* Bits within tgtype */
#define TRIGGER_TYPE_ROW (1 << 0)

5
src/include/commands/trigger.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/commands/trigger.h,v 1.73 2009/06/11 14:49:11 momjian Exp $
* $PostgreSQL: pgsql/src/include/commands/trigger.h,v 1.74 2009/07/28 02:56:31 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -104,7 +104,8 @@ extern PGDLLIMPORT int SessionReplicationRole;
#define TRIGGER_FIRES_ON_REPLICA 'R'
#define TRIGGER_DISABLED 'D'
extern Oid CreateTrigger(CreateTrigStmt *stmt, Oid constraintOid,
extern Oid CreateTrigger(CreateTrigStmt *stmt,
Oid constraintOid, Oid indexOid,
bool checkPermissions);
extern void DropTrigger(Oid relid, const char *trigname,

3
src/include/utils/rel.h
Unescape View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.114 2009/06/11 14:49:13 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.115 2009/07/28 02:56:31 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -58,6 +58,7 @@ typedef struct Trigger
char tgenabled;
bool tgisconstraint;
Oid tgconstrrelid;
Oid tgconstrindid;
Oid tgconstraint;
bool tgdeferrable;
bool tginitdeferred;

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