SELECT
    ITEM_CODE AS CODE,
    ITEM_NAME AS NAME,
    SUM(UNITPRICE * ORDER_QTY) AS TOTAL_AMT
FROM (
    SELECT
        *
    FROM
        ORDERS
    WHERE
        ORDER_DATE BETWEEN '2023-05-14' AND '2023-05-20'
)
INNER JOIN
    ORDERS_DTL USING (ORDER_NO)
INNER JOIN
    ITEM USING (ITEM_CODE)
GROUP BY
    ITEM_CODE
ORDER BY
    TOTAL_AMT DESC,
    CODE DESC
LIMIT
    5
;