Question 25:
Examine the structure of the EMPLOYEES table.
There is a parent/child relationship between EMPLOYEE_ID and MANAGER_ID. You want to display the last names and manager IDs of employees who work for the same manager as the employee whose EMPLOYEE_ID is 123. Which query provides the correct output?
Answer options:
A. SELECT e.last_name, m.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.manager_id = m.employee_id) AND e.employee_id = 123; B. SELECT e.last_name, m.manager_id FROM employees e LEFT OUTER JOIN employees m on (e.employee_id = m.manager_id) WHERE e.employee_id = 123; C. SELECT e.last_name, e.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.employee_id = m.employee_id) WHERE e.employee_id = 123; D. SELECT m.last_name, e.manager_id FROM employees e LEFT OUTER JOIN employees m on (e.manager_id = m.manager_id) WHERE e.employee_id = 123;