ค่าโดยสารชั้นเฟิร์สคลาสของ UA เที่ยวบิน 352 จากเดนเวอร์ไปบอสตันคือเท่าใด ไม่จำเป็นต้องใช้ตารางทั้งหมด
what is the FIRST class fare on UA flight 352 from DENVER to BOSTONIt is not neccessary to use all the tables.
 days:  days_code [ varchar]  day_name [ 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_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'BOSTON' AND flight.flight_number = 352 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 fare_basis.class_type = 'FIRST' AND fare.fare_basis_code = fare_basis.fare_basis_code AND flight_fare.fare_id = fare.fare_id AND flight.airline_code = 'UA' AND flight.flight_id = flight_fare.flight_id