with tmp as (
select round(avg(STD_COST_PRICE),0) av, GOODS_CODE
from SKU group by GOODS_CODE
) update SKU
set 
STD_COST_PRICE = GOODS.STD_COST_PRICE,
UPDATE_USER_NAME='MODIFY',
USER_UPDATE_DATETIME = '2024-08-31 00:00:00'
from GOODS 
where SKU.GOODS_CODE = GOODS.GOODS_CODE
and 
exists(
select 1 from tmp where tmp.GOODS_CODE = SKU.GOODS_CODE
and SKU.STD_COST_PRICE < av)