SQL Exercise: List jobs of department ID 1001, not found in ID 2001

SQL subqueries on employee Database: Exercise-19 with Solution

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19. From the following table, write a SQL query to find the highest paid employees in the department MARKETING. Return complete information about the employees.

Sample table: employees

Sample table: department

Sample Solution:

SELECT *
FROM employees
WHERE salary IN
    (SELECT max(salary)
     FROM employees
     WHERE dep_id IN
         (SELECT d.dep_id
          FROM department d
          WHERE d.dep_name = 'MARKETING'));

Sample Output:

 emp_id | emp_name | job_name | manager_id | hire_date  | salary  | commission | dep_id
--------+----------+----------+------------+------------+---------+------------+--------
  66928 | BLAZE    | MANAGER  |      68319 | 1991-05-01 | 2750.00 |            |   3001
(1 row)

Explanation:

The said query in SQL that selects all information about employees who work in the Marketing department and have the highest salary among all employees in the Marketing department from the employees table.

The subquery in the WHERE clause of main query that selects the maximum salary from the employees table where the dep_id is in the list of department IDs obtained from a subquery. The second subquery selects the dep_id column from the department table where the dep_name is equal to 'MARKETING'.

Practice Online

Structure of employee Database:

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