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
# select C.cust_name,O.order_num
# from Customers C INNER join Orders O ON C.cust_id = O.cust_id
# order by C.cust_name ASC,O.order_num ASC;
select cust_name,
(select order_num
from Orders O
where O.cust_id = Customers.cust_id) as order_num
from Customers
order by
cust_name ASC,
order_num ASC;
