CREATE TABLE cinema (cinema_id NUMBER, name CLOB, openning_year NUMBER, capacity NUMBER, location CLOB)
CREATE TABLE film (film_id NUMBER, rank_in_series NUMBER, number_in_season NUMBER, title CLOB, directed_by CLOB, original_air_date CLOB, production_code CLOB)
CREATE TABLE schedule (cinema_id NUMBER, film_id NUMBER, date CLOB, show_times_per_day NUMBER, price NUMBER)

What are the title and director of the films without any schedule?
SELECT title, directed_by FROM film WHERE NOT film_id IN (SELECT film_id FROM schedule)
SELECT "title", "directed_by" FROM "film" WHERE NOT "film_id" IN (SELECT "film_id" FROM "schedule")