แสดงเที่ยวบินทั้งหมดที่มาถึง DAL จากสนามบินอื่นให้ฉันดู ไม่จำเป็นต้องใช้ตารางทั้งหมด
show me all flights arriving at DAL from other airportsIt is not neccessary to use all the tables.
 fare_basis:  fare_basis_code [ text]  booking_class [ text]  class_type [ text]  premium [ text]  economy [ text]  discounted [ text]  night [ text]  season [ text]  basis_days [ text] 
SELECT DISTINCT flight.flight_id FROM airport, airport_service, city, flight WHERE airport.airport_code = 'DAL' AND city.city_code = airport_service.city_code AND flight.from_airport = airport_service.airport_code AND flight.to_airport = airport.airport_code