MySQL Aggregate Function Exercises: Get the department ID and the total salary payable in each department

MySQL Aggregate Function: Exercise-10 with Solution

Write a query to get the department ID and the total salary payable in each department.

Sample table: employees

Code:

SELECT department_id, SUM(salary)
FROM employees 
GROUP BY department_id;

Relational Algebra Expression:

Relational Algebra Tree:

Pictorial Presentation of the above query

MySQL Code Editor:

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