CREATE TABLE train (Train_ID NUMBER, Name CLOB, Time CLOB, Service CLOB)
CREATE TABLE station (Station_ID NUMBER, Name CLOB, Annual_entry_exit FLOAT, Annual_interchanges FLOAT, Total_Passengers FLOAT, Location CLOB, Main_Services CLOB, Number_of_Platforms NUMBER)
CREATE TABLE train_station (Train_ID NUMBER, Station_ID NUMBER)

Bar graph to show how many location from different location, and list total number from low to high order.
SELECT Location, COUNT(Location) FROM station GROUP BY Location ORDER BY COUNT(Location)
SELECT "Location", COUNT("Location") FROM "station" GROUP BY "Location" ORDER BY COUNT("Location")