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 employee (eid DECIMAL, name TEXT, salary DECIMAL)
CREATE TABLE certificate (eid DECIMAL, aid DECIMAL)

Show all origins and the number of flights from each origin.
SELECT origin, COUNT(*) FROM flight GROUP BY origin
SELECT "origin", COUNT(*) FROM "flight" GROUP BY "origin"