มีเที่ยวบินระหว่าง OAKLAND และ BOSTON โดยแวะพักที่ DALLAS FORT WORTH บน TW หรือไม่ ไม่จำเป็นต้องใช้ตารางทั้งหมด
is there a flight between OAKLAND and BOSTON with a stopover in DALLAS FORT WORTH on TWIt is not neccessary to use all the tables.
 flight_stop:  flight_id [ int]  stop_number [ int]  stop_days [ text]  stop_airport [ text]  arrival_time [ int]  arrival_airline [ text]  arrival_flight_number [ int]  departure_time [ int]  departure_airline [ text]  departure_flight_number [ int]  stop_time [ int] 
SELECT DISTINCT flight.flight_id FROM airport_service AS AIRPORT_SERVICE_0, airport_service AS AIRPORT_SERVICE_1, airport_service AS AIRPORT_SERVICE_2, airport_service AS AIRPORT_SERVICE_3, city AS CITY_0, city AS CITY_1, city AS CITY_2, city AS CITY_3, flight, flight_stop AS FLIGHT_STOP_0, flight_stop AS FLIGHT_STOP_1 WHERE (((CITY_2.city_code = AIRPORT_SERVICE_2.city_code AND CITY_2.city_name = 'DALLAS' AND CITY_3.city_code = AIRPORT_SERVICE_3.city_code AND CITY_3.city_name = 'FORT WORTH' AND FLIGHT_STOP_0.stop_airport = AIRPORT_SERVICE_2.airport_code AND FLIGHT_STOP_1.stop_airport = AIRPORT_SERVICE_3.airport_code AND flight.flight_id = FLIGHT_STOP_0.flight_id AND flight.flight_id = FLIGHT_STOP_1.flight_id) AND CITY_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'BOSTON' AND flight.to_airport = AIRPORT_SERVICE_1.airport_code) AND CITY_0.city_code = AIRPORT_SERVICE_0.city_code AND CITY_0.city_name = 'OAKLAND' AND flight.from_airport = AIRPORT_SERVICE_0.airport_code) AND flight.airline_code = 'TW'