题解 | #返回顾客名称和相关订单号#

法一：
select cust_name,order_num from Customers,Orders
where Customers.cust_id=Orders.cust_id
order by cust_name,order_num
法二：
select cust_name,order_num from 
Customers c inner join Orders o 
on c.cust_id=o.cust_id
order by cust_name,order_num