CREATE TABLE captain (captain_id DECIMAL, name TEXT, ship_id DECIMAL, age TEXT, class TEXT, rank TEXT)
CREATE TABLE ship (ship_id DECIMAL, name TEXT, type TEXT, built_year DECIMAL, class TEXT, flag TEXT)

Sort all captain names by their ages from old to young.
SELECT name FROM captain ORDER BY age DESC
SELECT "name" FROM "captain" ORDER BY "age" DESC NULLS LAST