ค่าตั๋วเครื่องบินไป-กลับชั้นหนึ่งจากอินเดียนาโปลิสไปเมมฟิซิ ไม่จำเป็นต้องใช้ตารางทั้งหมด
FIRST class round trip airfare from INDIANAPOLIS to MEMPHISIt is not neccessary to use all the tables.
 flight:  aircraft_code_sequence [ text]  airline_code [ varchar]  airline_flight [ text]  arrival_time [ int]  connections [ int]  departure_time [ int]  dual_carrier [ text]  flight_days [ text]  flight_id [ int]  flight_number [ int]  from_airport [ varchar]  meal_code [ text]  stops [ int]  time_elapsed [ int]  to_airport [ varchar] 
SELECT DISTINCT fare.fare_id FROM airport_service AS AIRPORT_SERVICE_0, airport_service AS AIRPORT_SERVICE_1, city AS CITY_0, city AS CITY_1, fare, fare_basis, flight, flight_fare WHERE (CITY_0.city_code = AIRPORT_SERVICE_0.city_code AND CITY_0.city_name = 'INDIANAPOLIS' AND CITY_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'MEMPHIS' AND NOT fare.round_trip_cost IS NULL AND flight_fare.fare_id = fare.fare_id AND flight.flight_id = flight_fare.flight_id AND flight.from_airport = AIRPORT_SERVICE_0.airport_code AND flight.to_airport = AIRPORT_SERVICE_1.airport_code) AND fare_basis.class_type = 'FIRST' AND fare.fare_basis_code = fare_basis.fare_basis_code