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