CREATE TABLE airport (id DECIMAL, city TEXT, country TEXT, iata TEXT, icao TEXT, name TEXT)
CREATE TABLE operate_company (id DECIMAL, name TEXT, type TEXT, principal_activities TEXT, incorporated_in TEXT, group_equity_shareholding DECIMAL)
CREATE TABLE flight (id DECIMAL, vehicle_flight_number TEXT, date TEXT, pilot TEXT, velocity DECIMAL, altitude DECIMAL, airport_id DECIMAL, company_id DECIMAL)

List the vehicle flight number, date and pilot of all the flights, ordered by altitude.
SELECT vehicle_flight_number, date, pilot FROM flight ORDER BY altitude
SELECT "vehicle_flight_number", "date", "pilot" FROM "flight" ORDER BY "altitude" NULLS FIRST