MySQL Aggregate Function Exercises: Get the total salary, maximum, minimum, average salary of employees, for department ID 90 only

MySQL Aggregate Function: Exercise-12 with Solution

Write a query to get the total salary, maximum, minimum, average salary of employees (job ID wise), for department ID 90 only.

Sample table: employees

Code:

SELECT job_id, SUM(salary), AVG(salary), MAX(salary), MIN(salary)
FROM employees 
WHERE department_id = '90' 
GROUP BY job_id;

Relational Algebra Expression:

Relational Algebra Tree:

Pictorial Presentation of the above query

MySQL Code Editor:

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