PostgreSQL JOINS: Make a join with tables job_history and jobs to find the employee ID, job title number of days worked in a department which ID is 90
7. Write a query to make a join to find the employee ID, job title and number of days an employee worked, for all the employees who worked in a department which ID is 90.
SELECT employee_id, job_title, end_date-start_date Days FROM job_history NATURAL JOIN jobs WHERE department_id=90;
Sample table: employees
pg_exercises=# SELECT employee_id, job_title, end_date-start_date Days pg_exercises-# FROM job_history pg_exercises-# NATURAL JOIN jobs pg_exercises-# WHERE department_id=90; employee_id | job_title | days -------------+--------------------------+------ 200 | Administration Assistant | 2100 200 | Public Accountant | 1644 (2 rows)
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