方式1 SELECT t1.cust_name,t2.order_num FROM Customers t1 JOIN Orders t2 ON t1.cust_id = t2.cust_id ORDER BY t1.cust_name ASC,t2.order_num ASC; 方式2 SELECT t1.cust_name,t2.order_num FROM Customers t1,Orders t2 WHERE t1.cust_id = t2.cust_id ORDER BY t1.cust_name ASC,t2.order_num ASC; 方式3 SELECT cust_na...