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select * from locations;
select * from employees;
select * from jobs;
select * from departments;
select location_id, street_address, city, state_province, country_name
from locations natural join countries;
select last_name, department_id, department_name
from employees natural join departments;
select e.last_name, e.job_id, e.department_id, d.department_name
from employees e join departments d
on d.department_id = e.department_id
join locations l
on city = 'Toronto';
select e.last_name Employee, e.employee_id as emp#, m.last_name Manager, m.employee_id mgr#
from employees e join employees m
on (e.manager_id = m.employee_id);
select e.last_name Employee, e.employee_id as emp#, m.last_name Manager, m.employee_id mgr#
from employees e left outer join employees m
on (e.manager_id = m.employee_id)
order by e.employee_id;
select e.last_name, e.department_id, c.last_name
from employees e cross join employees c
on e.department_id = c.department_id;
employee last names, department
numbers, and all the employees who work in the same department as a given employee.
Give each column an appropriate label.
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