มีเที่ยวบินจากเดนเวอร์ไปซานฟรานซิสโกโดย CO ออกเดินทางหลัง 12.00 น. ไม่จำเป็นต้องใช้โต๊ะทั้งหมดหรือไม่
is there a flight from DENVER to SAN FRANCISCO on CO leaving after 1200 o'clock in the afternoonIt is not neccessary to use all the tables.
 ground_service:  city_code [ text]  airport_code [ text]  transport_type [ text]  ground_fare [ int] 
SELECT DISTINCT flight.flight_id FROM airport_service AS AIRPORT_SERVICE_0, airport_service AS AIRPORT_SERVICE_1, city AS CITY_0, city AS CITY_1, flight WHERE ((CITY_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'SAN FRANCISCO' AND flight.departure_time > 1200 AND flight.to_airport = AIRPORT_SERVICE_1.airport_code) AND CITY_0.city_code = AIRPORT_SERVICE_0.city_code AND CITY_0.city_name = 'DENVER' AND flight.from_airport = AIRPORT_SERVICE_0.airport_code) AND flight.airline_code = 'CO'