MySQL Aggregate Function Exercises: Get the average salary for all departments employing more than 10 employees

MySQL Aggregate Function: Exercise-14 with Solution

Write a query to get the average salary for all departments employing more than 10 employees.

Sample table: employees

Code:

SELECT department_id, AVG(salary), COUNT(*) 
FROM employees 
GROUP BY department_id
HAVING COUNT(*) > 10;

Relational Algebra Expression:

Relational Algebra Tree:

Pictorial Presentation of the above query

MySQL Code Editor:

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