with AVG as(
    select GOODS_CODE ,round(avg(STD_COST_PRICE),0) as AVG
        from SKU
        group by GOODS_CODE
)
, S as (
  select A.goods_code, A.SKU_CODE 
    from sku as A inner join AVG on A.Goods_code = AVG.Goods_code
    where A.STD_COST_PRICE <  AVG.AVG
)
update SKU
    set STD_COST_PRICE = G.STD_COST_PRICE
        , UPDATE_USER_NAME = 'MODIFY' 
        , USER_UPDATE_DATETIME = '2024-08-3 00:00;00' 
    from Goods as G where G.Goods_code = SKU.Goods_code
        and SKU.sku_code in ( select sku_code from S where S.goods_code = SKU.goods_code )