CREATE TABLE movie (mid NUMBER, title CLOB, year NUMBER, director CLOB)
CREATE TABLE rating (rid NUMBER, mid NUMBER, stars NUMBER, ratingdate TIME)
CREATE TABLE reviewer (rid NUMBER, name CLOB)

Find the titles of all movies that have no ratings.
SELECT title FROM movie WHERE NOT mid IN (SELECT mid FROM rating)
SELECT "title" FROM "movie" WHERE NOT "mid" IN (SELECT "mid" FROM "rating")