CREATE TABLE train (id INT, train_number INT, name TEXT, origin TEXT, destination TEXT, time TEXT, interval TEXT)
CREATE TABLE route (train_id INT, station_id INT)
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)

Compare the number of services by services with a bar graph, sort by the y axis from high to low.
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