SELECT
    ORDERS.CUST_CODE AS CODE,
    CUST_NAME AS NAME,
    COUNT(*) AS CNT,
    SUM(ORDER_AMNT) AS TTL_AMT,
    ROUND(1.00 * SUM(ORDER_AMNT) / COUNT(*)) AS AVG_AMT
FROM
    ORDERS
    INNER JOIN
        CUSTOMER ON ORDERS.CUST_CODE = CUSTOMER.CUST_CODE
WHERE
    ORDER_DATE BETWEEN '2023-09-01' AND '2023-09-30'
GROUP BY
    ORDERS.CUST_CODE
ORDER BY
    CNT DESC,
    AVG_AMT DESC,
    CODE ASC