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

Group by services attribute in station table and compute the total number of services with a bar chart, display x-axis from high to low order please.
SELECT services, COUNT(services) FROM station GROUP BY services ORDER BY services DESC
SELECT "services", COUNT("services") FROM "station" GROUP BY "services" ORDER BY "services" DESC