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