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Give a more user-friendly error message in case where a table is created

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in a schema whose default tablespace has been dropped.
This commit is contained in:
Tom Lane 2004-10-16 21:16:36 +00:00
parent 2a63c1602d
commit dc19aaa12f
1 changed files with 41 additions and 1 deletions
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42
src/backend/commands/tablecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.134 2004/10/12 21:54:36 petere Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.135 2004/10/16 21:16:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -168,6 +168,7 @@ static void StoreCatalogInheritance(Oid relationId, List *supers);
static int findAttrByName(const char *attributeName, List *schema);
static void setRelhassubclassInRelation(Oid relationId, bool relhassubclass);
static bool needs_toast_table(Relation rel);
static void check_tablespace_exists(Oid tablespaceId, Oid namespaceId);
static int transformColumnNameList(Oid relId, List *colList,
int16 *attnums, Oid *atttypids);
static int transformFkeyGetPrimaryKey(Relation pkrel, Oid *indexOid,
@ -337,6 +338,9 @@ DefineRelation(CreateStmt *stmt, char relkind)
{
tablespaceId = get_namespace_tablespace(namespaceId);
/* note no permission check on tablespace in this case */
/* check to see that schema's tablespace still exists */
if (OidIsValid(tablespaceId))
check_tablespace_exists(tablespaceId, namespaceId);
}
/*
@ -5865,6 +5869,42 @@ needs_toast_table(Relation rel)
return (tuple_length > TOAST_TUPLE_THRESHOLD);
}
/*
* Verify that a schema's tablespace still exists
*
* We need this because DROP TABLESPACE cannot check whether the target
* tablespace is the default tablespace for any schemas. (It could check
* in the current database, but that doesn't seem very helpful.) Subsequent
* attempts to create tables in that tablespace will fail. This code just
* exists to ensure that we give a helpful error message.
*/
static void
check_tablespace_exists(Oid tablespaceId, Oid namespaceId)
{
Relation pg_tablespace;
ScanKeyData entry[1];
HeapScanDesc scan;
HeapTuple tuple;
/* There's no syscache for pg_tablespace, so must look the hard way */
pg_tablespace = heap_openr(TableSpaceRelationName, AccessShareLock);
ScanKeyInit(&entry[0],
ObjectIdAttributeNumber,
BTEqualStrategyNumber, F_OIDEQ,
ObjectIdGetDatum(tablespaceId));
scan = heap_beginscan(pg_tablespace, SnapshotNow, 1, entry);
tuple = heap_getnext(scan, ForwardScanDirection);
if (!HeapTupleIsValid(tuple))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("tablespace with OID %u does not exist",
tablespaceId),
errdetail("The default tablespace for schema \"%s\" has been dropped.",
get_namespace_name(namespaceId))));
heap_endscan(scan);
heap_close(pg_tablespace, AccessShareLock);
}
/*
* This code supports