PostgreSQL Subquery: Find the name and salary of the employees who draws the same salary as the minimum salary for all departments

9. Write a SQL subquery to find all the information of the employees who draws the same salary as the minimum salary for all departments.

Sample Solution:

Code:

SELECT * 
FROM employees 
WHERE salary = (
SELECT MIN(salary) 
FROM employees);

Sample table: employees

Sample table: departments

Output:

pg_exercises=# SELECT *
pg_exercises-# FROM employees
pg_exercises-# WHERE salary = (
pg_exercises(# SELECT MIN(salary)
pg_exercises(# FROM employees);

 employee_id | first_name | last_name |     email     | phone_number | hire_date  |  job_id  | salary  | commission_pct | manager_id | department_id
-------------+------------+-----------+---------------+--------------+------------+----------+---------+----------------+------------+---------------
         132 | TJ         | Olson     | not available | 650.123.8234 | 1987-07-19 | ST_CLERK | 2100.00 |           0.00 |        121 |            50
(1 row)

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