CREATE TABLE ship (Ship_ID INT, Name TEXT, Type TEXT, Nationality TEXT, Tonnage INT)
CREATE TABLE mission (Mission_ID INT, Ship_ID INT, Code TEXT, Launched_Year INT, Location TEXT, Speed_knots INT, Fate TEXT)

Bar graph to show how many nationality from different nationality, display from low to high by the how many nationality.
SELECT Nationality, COUNT(Nationality) FROM ship GROUP BY Nationality ORDER BY COUNT(Nationality)
SELECT "Nationality", COUNT("Nationality") FROM "ship" GROUP BY "Nationality" ORDER BY COUNT("Nationality") NULLS FIRST