What the full names, ids of each employee and the name of the country they are in?
select first_name, last_name, employee_id, country_name from employees as t1 join departments as t2 on t1.department_id = t2.department_id join locations as t3 on t2.location_id = t3.location_id join countries as t4 on t3.country_id = t4.country_id