CREATE TABLE train_station (Train_ID NUMBER, Station_ID NUMBER)
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 (Train_ID NUMBER, Name CLOB, Time CLOB, Service CLOB)

Create a bar chart showing total number of number of platforms across location, sort by the x-axis in desc.
SELECT Location, SUM(Number_of_Platforms) FROM station GROUP BY Location ORDER BY Location DESC
SELECT "Location", SUM("Number_of_Platforms") FROM "station" GROUP BY "Location" ORDER BY "Location" DESC