Can you please tell me the names of the artists who don't have any exhibitions?
select name from artist where artist_id not in ( select artist_id from exhibition )
What are their countries?
select country from artist where artist_id not in ( select artist_id from exhibition )
What are their ages?
select age from artist where artist_id not in ( select artist_id from exhibition )
What is the name of the oldest artist?
select name from artist order by age desc limit 1
Did he have any exhibitions?
select name from artist where artist_id in ( select artist_id from exhibition ) and name = "Jeff Sluman"