CREATE TABLE captain (Captain_ID NUMBER, Name CLOB, Ship_ID NUMBER, age CLOB, Class CLOB, Rank CLOB)
CREATE TABLE Ship (Ship_ID NUMBER, Name CLOB, Type CLOB, Built_Year FLOAT, Class CLOB, Flag CLOB)

What is the total number of captains with different classes?, sort by the bars in desc.
SELECT Class, COUNT(Class) FROM captain GROUP BY Class ORDER BY Class DESC
SELECT "Class", COUNT("Class") FROM "captain" GROUP BY "Class" ORDER BY "Class" DESC