Zdravím A děkuji dopředu.Poopravil by někdo muj kod podle zadání:
Obtain code and model of airplanes which have more than one assigned flight.
Muj kod:
SELECT airplane.airplane_code, airplane.model ,count(flight.airplane_code)
FROM airplane, flight
WHERE airplane.airplane_code=flight.aiplane_code
HAVING count(flight.airplane_code) >1;