题解 | #返回顾客名称和相关订单号#
返回顾客名称和相关订单号
https://www.nowcoder.com/practice/7e7bc361db6a4cb6aa35eefccfe75364
-- 使用简单的等联结语法
select cust_name,(
select order_num
from Orders
where Customers.cust_id = Orders.cust_id
) as order_num
from Customers
order by cust_name,order_num;
-- 使用 INNER JOIN方式
select cust_name,order_num
from Orders
inner join Customers on Customers.cust_id = Orders.cust_id
order by cust_name,order_num;
