SELECT ITEM.ITEM_CODE CODE,
ITEM.ITEM_NAME NAME,
SUM(UNITPRICE*ORDER_QTY) TOTAL_AMT
FROM ORDERS
LEFT JOIN ORDERS_DTL ON ORDERS.ORDER_NO=ORDERS_DTL.ORDER_NO
LEFT JOIN ITEM ON ORDERS_DTL.ITEM_CODE=ITEM.ITEM_CODE
WHERE 2023-5-14<=ORDER_DATE <=2023-5-20
GROUP BY CODE,NAME
ORDER BY TOTAL_AMT DESC,CODE DESC
LIMIT 5