PostgreSQL JOINS: Make a join with two tables employees and departments for all the managers who achieved a working experience is more than 15 years
13. Write a query to make a join with two tables employees and departments to display department name, first_name and last_name, hire date and salary for all the managers who achieved a working experience is more than 15 years.
Sample Solution:
Code:
SELECT department_name, first_name, last_name,
hire_date, salary,date_part('year',age(now(),hire_date)) Experience
FROM departments w1
JOIN employees w2
ON (w1.manager_id = w2.employee_id)
WHERE date_part('year',age(now(),hire_date))>15;
Sample table: employees
Sample table: departments
Output:
pg_exercises-# SELECT department_name, first_name, last_name, pg_exercises-# hire_date, salary,date_part('year',age(now(),hire_date)) Experience pg_exercises-# FROM departments w1 pg_exercises-# JOIN employees w2 pg_exercises-# ON (w1.manager_id = w2.employee_id) pg_exercises-# WHERE date_part('year',age(now(),hire_date))>15; department_name | first_name | last_name | hire_date | salary | experience ------------------+------------+-----------+------------+----------+------------ Administration | Jennifer | Whalen | 1987-09-25 | 4400.00 | 29 Marketing | Michael | Hartstein | 1987-09-26 | 13000.00 | 29 Purchasing | Den | Raphaely | 1987-07-01 | 11000.00 | 29 Human Resources | Susan | Mavris | 1987-09-28 | 6500.00 | 29 Shipping | Adam | Fripp | 1987-07-08 | 8200.00 | 29 IT | Alexander | Hunold | 1987-06-20 | 9000.00 | 29 Public Relations | Hermann | Baer | 1987-09-29 | 10000.00 | 29 Sales | John | Russell | 1987-08-01 | 14000.00 | 29 Executive | Steven | King | 1987-06-17 | 24000.00 | 29 Finance | Nancy | Greenberg | 1987-06-25 | 12000.00 | 29 Accounting | Shelley | Higgins | 1987-09-30 | 12000.00 | 29 (11 rows)
Practice Online
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Previous: Write a query to make a join with two tables employees and jobs to display the job title, employee name, and the difference between salary and the minimum salary of the employees.
Next: PostgreSQL Subquery - Exercises, Practice, Solution
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