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

Show flight number, origin, destination of all flights in the alphabetical order of the departure cities.
SELECT flno, origin, destination FROM flight ORDER BY origin
SELECT "flno", "origin", "destination" FROM "flight" ORDER BY "origin"