Hier ist ein Skript, das ich für einen ähnlichen Zweck verwendet habe. Es unterstützt keine zusammengesetzten Fremdschlüssel (die mehr als ein Feld verwenden). Und es müsste wahrscheinlich etwas angepasst werden, bevor es für Ihre Situation funktioniert. BEARBEITEN:Insbesondere werden mehrspaltige Fremdschlüssel nicht korrekt behandelt.
select
DropStmt = 'ALTER TABLE [' + ForeignKeys.ForeignTableSchema +
'].[' + ForeignKeys.ForeignTableName +
'] DROP CONSTRAINT [' + ForeignKeys.ForeignKeyName + ']; '
, CreateStmt = 'ALTER TABLE [' + ForeignKeys.ForeignTableSchema +
'].[' + ForeignKeys.ForeignTableName +
'] WITH CHECK ADD CONSTRAINT [' + ForeignKeys.ForeignKeyName +
'] FOREIGN KEY([' + ForeignKeys.ForeignTableColumn +
']) REFERENCES [' + schema_name(sys.objects.schema_id) + '].[' +
sys.objects.[name] + ']([' +
sys.columns.[name] + ']) ON DELETE CASCADE; '
from sys.objects
inner join sys.columns
on (sys.columns.[object_id] = sys.objects.[object_id])
inner join (
select sys.foreign_keys.[name] as ForeignKeyName
,schema_name(sys.objects.schema_id) as ForeignTableSchema
,sys.objects.[name] as ForeignTableName
,sys.columns.[name] as ForeignTableColumn
,sys.foreign_keys.referenced_object_id as referenced_object_id
,sys.foreign_key_columns.referenced_column_id as referenced_column_id
from sys.foreign_keys
inner join sys.foreign_key_columns
on (sys.foreign_key_columns.constraint_object_id
= sys.foreign_keys.[object_id])
inner join sys.objects
on (sys.objects.[object_id]
= sys.foreign_keys.parent_object_id)
inner join sys.columns
on (sys.columns.[object_id]
= sys.objects.[object_id])
and (sys.columns.column_id
= sys.foreign_key_columns.parent_column_id)
) ForeignKeys
on (ForeignKeys.referenced_object_id = sys.objects.[object_id])
and (ForeignKeys.referenced_column_id = sys.columns.column_id)
where (sys.objects.[type] = 'U')
and (sys.objects.[name] not in ('sysdiagrams'))
