_getMembersCountExpr(); return $columns; } protected function _getMembersCountExpr() { $select = $this->_db->select(); $select->from($this->_getPair('UserList'), 'COUNT(*)') ->where('`UserList`.`listId` = `' . $this->_tableAlias . '`.`id`'); return new Zend_Db_Expr('(' . $select . ')'); } }