SELECT first_name ,  last_name FROM Maintenance_Engineers WHERE engineer_id NOT IN (SELECT engineer_id FROM Engineer_Visits)
Which engineers have never visited to maintain the assets? List the engineer first name and last name.
SELECT first_name , last_name FROM Maintenance_Engineers WHERE engineer_id NOT IN ( SELECT engineer_id FROM Engineer_Visits )
select first_name , last_name from maintenance_engineers where engineer_id not in ( select engineer_id from engineer_visits )
Which engineers have never visited to maintain the assets ? List the engineer first name and last name .