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

Show all origins and the number of flights from each origin Show bar chart, and rank in desc by the x axis.
SELECT origin, COUNT(*) FROM flight GROUP BY origin ORDER BY origin DESC
SELECT "origin", COUNT(*) FROM "flight" GROUP BY "origin" ORDER BY "origin" DESC NULLS LAST