CREATE TABLE employee (eid DECIMAL, name TEXT, salary DECIMAL)
CREATE TABLE aircraft (aid DECIMAL, name TEXT, distance DECIMAL)
CREATE TABLE flight (flno DECIMAL, origin TEXT, destination TEXT, distance DECIMAL, departure_date TIME, arrival_date TIME, price DECIMAL, aid DECIMAL)
CREATE TABLE certificate (eid DECIMAL, aid DECIMAL)

What is the flight number and its distance for the one with the maximum price?
SELECT flno, distance FROM flight ORDER BY price DESC LIMIT 1
SELECT "flno", "distance" FROM "flight" ORDER BY "price" DESC NULLS LAST LIMIT 1