SELECT name FROM person EXCEPT SELECT T2.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name  =  T2.friend WHERE T1.job  =  'student'
Find the name of the person who has no student friends.
SELECT name FROM person EXCEPT SELECT T2.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name = T2.friend WHERE T1.job = 'student '
select name from person except select t2 . name from person as t1 join personfriend as t2 on t1 . name = t2 . friend where t1 . job = value
Find the name of the person who has no student friends .