SELECT OD.ITEM_CODE AS CODE,
       I.ITEM_NAME AS NAME,
       SUM(OD.UNITPRICE * OD.ORDER_QTY) AS TOTAL_AMT
  FROM ORDERS O
  LEFT JOIN ORDERS_DTL OD
    ON O.ORDER_NO = OD.ORDER_NO
  LEFT JOIN ITEM I
    ON OD.ITEM_CODE = I.ITEM_CODE
 WHERE O.ORDER_DATE BETWEEN '2023-05-14' AND '2023-05-20'
 GROUP BY OD.ITEM_CODE,
          I.ITEM_NAME
 ORDER BY SUM(OD.UNITPRICE * OD.ORDER_QTY) DESC,
          OD.ITEM_CODE DESC
 LIMIT 5