release; } public function require_all_upgrades() { return false; } /** * * @return Array */ function concern() { return $this->concern; } function apply(base &$databox) { $sql = 'UPDATE record SET parent_record_id = "1" WHERE parent_record_id != "0"'; $stmt = $databox->get_connection()->prepare($sql); $stmt->execute(); $stmt->closeCursor(); return true; } }