public function testOrderLimitOnMultiple()
 {
     try {
         $q = new DeleteQuery(array('test', 'test2', 'test3'));
         $q->setLimit(10);
         $this->fail('LIMIT should not be allowed on multi-table queries');
     } catch (LogicException $e) {
     }
     try {
         $q = new DeleteQuery(array('test', 'test2', 'test3'));
         $q->setOrderBy(array(new Field('field1')));
         $this->fail('ORDER BY should not be allowed on multi-table queries');
     } catch (LogicException $e) {
     }
 }