CREATE TABLE train (id INT, train_number INT, name TEXT, origin TEXT, destination TEXT, time TEXT, interval TEXT)
CREATE TABLE weekly_weather (station_id INT, day_of_week TEXT, high_temperature INT, low_temperature INT, precipitation FLOAT, wind_speed_mph INT)
CREATE TABLE station (id INT, network_name TEXT, services TEXT, local_authority TEXT)
CREATE TABLE route (train_id INT, station_id INT)

Draw a bar chart of services versus the number of services, and show total number from high to low order.
SELECT services, COUNT(services) FROM station GROUP BY services ORDER BY COUNT(services) DESC
SELECT "services", COUNT("services") FROM "station" GROUP BY "services" ORDER BY COUNT("services") DESC NULLS LAST