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

Compare the number of services by services with a bar graph, and display in ascending by the bars.
SELECT services, COUNT(services) FROM station GROUP BY services ORDER BY services
SELECT "services", COUNT("services") FROM "station" GROUP BY "services" ORDER BY "services"