Alternative solution

Hi, here is an alternative solution to this problem:

CREATE OR REPLACE VIEW v_avg_manager_salary AS
    SELECT 
        ROUND(AVG(s.salary), 2)
    FROM
        salaries s
    WHERE
        s.emp_no IN (SELECT 
                m.emp_no
            FROM
                dept_manager m);

Is the solution provided better in any way?

Thanks.