PostgreSQL JOINS: Make a join with three tables to find the name, jobs, department name and ID of all the employees working in London
3. Write a SQL query to make a join with three tables employees, departments and locations to find the name, including first_name and last_name, jobs, department name and ID, of the employees working in London.
SELECT e.first_name, e.last_name, e.job_id, e.department_id, d.department_name FROM employees e JOIN departments d ON (e.department_id = d.department_id) JOIN locations l ON (d.location_id = l.location_id) WHERE l.city = 'London';
Sample table: employees
Sample table: locations
Sample table: departments
pg_exercises-# FROM employees e pg_exercises-# JOIN departments d pg_exercises-# ON (e.department_id = d.department_id) pg_exercises-# JOIN locations l ON pg_exercises-# (d.location_id = l.location_id) pg_exercises-# WHERE l.city = 'London'; first_name | last_name | job_id | department_id | department_name ------------+-----------+--------+---------------+----------------- Susan | Mavris | HR_REP | 40 | Human Resources (1 row)
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Previous: Write a query to make a join with employees and departments table to find the name of the employee, including first_name and last name, department ID and name of departments.
Next: Write a query to make a join with two tables employees and itself to find the employee id, last_name as Employee along with their manager_id and last name as Manager.
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