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