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

Compare the total number of different ranks using a bar graph, and sort bar in ascending order.
SELECT Rank, COUNT(Rank) FROM captain GROUP BY Rank ORDER BY Rank
SELECT "Rank", COUNT("Rank") FROM "captain" GROUP BY "Rank" ORDER BY "Rank" NULLS FIRST