ORA-00934:Fungsi grup tidak diizinkan di sini || Memilih MIN (Gaji) dari departemen dengan bayaran tertinggi

Saya tidak dapat menguji ini, tetapi seharusnya berhasil:

;WITH DepartmentsSalary AS
(
    SELECT department_ID, AVG(Salary) AvgSalary, MIN(Salary) MinSalary
    FROM employees
    GROUP BY department_ID
)
SELECT department_ID, MinSalary
FROM (  SELECT department_ID, AvgSalary, MAX(AvgSalary) OVER() MaxSalary, MinSalary
        FROM DepartmentsSalary) D
WHERE MaxSalary = AvgSalary