Find the names of users who did not leave any review.
SELECT name FROM useracct WHERE u_id NOT IN (SELECT u_id FROM review)
SELECT name FROM useracct WHERE u_id NOT IN (SELECT u_id FROM review)
[{'name': 'Terry'}, {'name': 'Nancy'}, {'name': 'Rosie'}, {'name': 'Roxi'}, {'name': 'Emily'}]