with TMP as (
    select
        *
        , row_number() over (order by ORDER_QTY desc, ORDER_DATE desc, ITEM_CODE desc) as RANKING
    from
        (
        select
            sum(D.ORDER_QTY) as ORDER_QTY
            , O.ORDER_DATE as ORDER_DATE
            , D.ITEM_CODE as ITEM_CODE
        from
            ORDERS as O
        left join
            ORDERS_DTL as D on O.ORDER_NO=D.ORDER_NO
        where
            O.ORDER_DATE between '2023-04-01' and '2023-06-30'
        group by
            D.ITEM_CODE
        )
)


update 
    ITEM as I
set
    ITEM_POPULAR_RANK=coalesce((select RANKING from TMP as T where I.ITEM_CODE=T.ITEM_CODE), 0)
;