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CREATE TABLE IF NOT EXISTS.

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Reviewed by Bernd Helmle.
This commit is contained in:
Robert Haas
2010-07-25 23:21:22 +00:00
parent edff75bef8
commit a3b012b560
21 changed files with 145 additions and 31 deletions
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6
src/backend/commands/cluster.c
View File

@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.203 2010/04/28 16:10:41 heikki Exp $
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.204 2010/07/25 23:21:21 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -687,7 +687,9 @@ make_new_heap(Oid OIDOldHeap, Oid NewTableSpace)
ONCOMMIT_NOOP,
reloptions,
false,
true);
true,
false);
Assert(OIDNewHeap != InvalidOid);
ReleaseSysCache(tuple);

4
src/backend/commands/sequence.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.168 2010/02/20 21:24:02 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.169 2010/07/25 23:21:21 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -203,8 +203,10 @@ DefineSequence(CreateSeqStmt *seq)
stmt->options = list_make1(defWithOids(false));
stmt->oncommit = ONCOMMIT_NOOP;
stmt->tablespacename = NULL;
stmt->if_not_exists = false;
seqoid = DefineRelation(stmt, RELKIND_SEQUENCE);
Assert(seqoid != InvalidOid);
rel = heap_open(seqoid, AccessExclusiveLock);
tupDesc = RelationGetDescr(rel);

14
src/backend/commands/tablecmds.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.333 2010/07/23 20:04:18 petere Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.334 2010/07/25 23:21:21 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -548,8 +548,18 @@ DefineRelation(CreateStmt *stmt, char relkind)
stmt->oncommit,
reloptions,
true,
allowSystemTableMods);
allowSystemTableMods,
stmt->if_not_exists);
/*
* If heap_create_with_catalog returns InvalidOid, it means that the user
* specified "IF NOT EXISTS" and the relation already exists. In that
* case we do nothing further.
*/
if (relationId == InvalidOid)
return InvalidOid;
/* Store inheritance information for new rel. */
StoreCatalogInheritance(relationId, inheritOids);
/*

8
src/backend/commands/typecmds.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.148 2010/02/26 02:00:40 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.149 2010/07/25 23:21:21 rhaas Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@@ -1506,6 +1506,7 @@ DefineCompositeType(const RangeVar *typevar, List *coldeflist)
CreateStmt *createStmt = makeNode(CreateStmt);
Oid old_type_oid;
Oid typeNamespace;
Oid relid;
if (coldeflist == NIL)
ereport(ERROR,
@@ -1523,6 +1524,7 @@ DefineCompositeType(const RangeVar *typevar, List *coldeflist)
createStmt->options = list_make1(defWithOids(false));
createStmt->oncommit = ONCOMMIT_NOOP;
createStmt->tablespacename = NULL;
createStmt->if_not_exists = false;
/*
* Check for collision with an existing type name. If there is one and
@@ -1546,7 +1548,9 @@ DefineCompositeType(const RangeVar *typevar, List *coldeflist)
/*
* Finally create the relation. This also creates the type.
*/
return DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE);
relid = DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE);
Assert(relid != InvalidOid);
return relid;
}
/*

9
src/backend/commands/view.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/view.c,v 1.120 2010/01/02 16:57:40 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/view.c,v 1.121 2010/07/25 23:21:21 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -222,6 +222,8 @@ DefineVirtualRelation(const RangeVar *relation, List *tlist, bool replace)
}
else
{
Oid relid;
/*
* now set the parameters for keys/inheritance etc. All of these are
* uninteresting for views...
@@ -233,13 +235,16 @@ DefineVirtualRelation(const RangeVar *relation, List *tlist, bool replace)
createStmt->options = list_make1(defWithOids(false));
createStmt->oncommit = ONCOMMIT_NOOP;
createStmt->tablespacename = NULL;
createStmt->if_not_exists = false;
/*
* finally create the relation (this will error out if there's an
* existing view, so we don't need more code to complain if "replace"
* is false).
*/
return DefineRelation(createStmt, RELKIND_VIEW);
relid = DefineRelation(createStmt, RELKIND_VIEW);
Assert(relid != InvalidOid);
return relid;
}
}