UPDATE SKU
SET STD_COST_PRICE = (
  SELECT GOODS.STD_COST_PRICE
  FROM GOODS
  WHERE SKU.GOODS_CODE = GOODS.GOODS_CODE
)
, UPDATE_USER_NAME = 'MODIFY'
,USER_UPDATE_DATETIME = '2024-08-31 00:00:00'
WHERE
    EXISTS (
        SELECT ROUND(AVG(SKU2.STD_COST_PRICE)) AS PRICE
        FROM SKU AS SKU2
        WHERE SKU.GOODS_CODE = SKU2.GOODS_CODE
        HAVING
            SKU.STD_COST_PRICE < PRICE 
    )