UPDATE SKU AS S
SET
    STD_COST_PRICE = (
        SELECT
            G.STD_COST_PRICE
        FROM
            GOODS G
        WHERE
            G.GOODS_CODE = SKU.GOODS_CODE
    ),
    UPDATE_USER_NAME = 'MODIFY',
    USER_UPDATE_DATETIME = '2024-08-31 00:00:00'
FROM
    (
        SELECT
            GOODS_CODE,
            ROUND(AVG(STD_COST_PRICE), 1) AS STD_COST_PRICE
        FROM
            SKU
        GROUP BY
            GOODS_CODE
    ) AS AVE
WHERE
    S.STD_COST_PRICE < AVE.STD_COST_PRICE