SELECT date_left_staff FROM Staff WHERE first_name = "Janessa" AND last_name = "Sawayn";
When did the staff member Janessa Sawayn leave the company?
SELECT date_left_staff FROM Staff WHERE first_name = `` Janessa '' AND last_name = `` Sawayn '' ;
select date_left_staff from staff where first_name = value and last_name = value
When did the staff member Janessa Sawayn leave the company ?