Table schema:
CREATE TABLE exhibition (artist_id VARCHAR, year VARCHAR); CREATE TABLE artist (name VARCHAR); CREATE TABLE artist (name VARCHAR, artist_id VARCHAR)

Question: Show all artist names who didn't have an exhibition in 2004.
SQL: SELECT name FROM artist EXCEPT SELECT T2.name FROM exhibition AS T1 JOIN artist AS T2 ON T1.artist_id = T2.artist_id WHERE T1.year = 2004