1、Oracle 連表修改
merge into t_user t1 using (select * from t_class) t2 on(t1.userId=t2.userId) when matched then update set t1.name=t2.name
2、Sql server 連表修改
UPDATE b SET b.ProductSN=p.productsn FROM t_user b INNER JOIN t_student p ON b.MainSN=p.MainSN