รายการเที่ยวบินตรงทั้งหมดในวันพุธจากบัลติมอร์ไปยังนิววาร์คก่อน 12.00 น. ไม่จำเป็นต้องใช้ตารางทั้งหมด
list all nonstop flights on wednesday from BALTIMORE to NEWARK before 1200It is not neccessary to use all the tables.
 code_description:  code [ varchar]  description [ text] 
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, date_day, days, flight WHERE (((date_day.day_number = 23 AND date_day.month_number = 4 AND date_day.year = 1991 AND days.day_name = date_day.day_name AND flight.departure_time < 1200 AND flight.flight_days = days.days_code) AND CITY_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'NEWARK' AND flight.to_airport = AIRPORT_SERVICE_1.airport_code) AND CITY_0.city_code = AIRPORT_SERVICE_0.city_code AND CITY_0.city_name = 'BALTIMORE' AND flight.from_airport = AIRPORT_SERVICE_0.airport_code) AND flight.stops = 0