select b.item_code              CODE,
       item_name                NAME,
       sum(unitprice * order_qty) as TOTAL_AMT
from ORDERS A
         inner join ORDERS_DTL B on A.order_no = b.order_no
         inner join ITEM on B.item_code = item.item_code
where '2023-05-14' <= order_date
  and order_date <= '2023-05-20'
group by b.item_code, item_name
order by 3 DESC, 1 desc
limit 5;