Show publishers with a book published in 1989 and a book in 1990.
CREATE TABLE book_club (publisher VARCHAR, YEAR VARCHAR)
SELECT publisher FROM book_club WHERE YEAR = 1989 INTERSECT SELECT publisher FROM book_club WHERE YEAR = 1990
### Context: CREATE TABLE book_club (publisher VARCHAR, YEAR VARCHAR) ### Question: Show publishers with a book published in 1989 and a book in 1990. ### Answer: SELECT publisher FROM book_club WHERE YEAR = 1989 INTERSECT SELECT publisher FROM book_club WHERE YEAR = 1990