SELECT
    CUSTOMER.CUST_CODE AS CODE,
    CUST_NAME AS NAME,
    COUNT(DISTINCT ORDER_DATE) AS CNT
FROM
    ORDERS
INNER JOIN CUSTOMER
    ON ORDERS.CUST_CODE = CUSTOMER.CUST_CODE
WHERE
    ORDER_DATE BETWEEN '2023-07-01' AND '2023-07-31'
GROUP BY
    CUSTOMER.CUST_CODE, CUST_NAME
ORDER BY
    CNT DESC,
    CODE DESC;