I have for example online flight. The phpvms_acarsdate has id (auto_increment) , pilotid, flightnum ... colums. Every minute acars client send updated data to phpvms (Function ACARSData::updateFlightData($pilotid, $data)) . And after every update id of row changes is it possible to don't change row id for whole flight? So after and while flight i want to use and row id as unique variable for all stats for this flight.