CREATE TABLE actor (actor_id NUMBER, name CLOB, musical_id NUMBER, character CLOB, duration CLOB, age NUMBER)
CREATE TABLE musical (musical_id NUMBER, name CLOB, year NUMBER, award CLOB, category CLOB, nominee CLOB, result CLOB)

List the name of actors whose age is not 20.
SELECT name FROM actor WHERE age <> 20
SELECT "name" FROM "actor" WHERE "age" <> 20