题解 | #返回顾客名称和相关订单号以及每个订单的总价#
返回顾客名称和相关订单号以及每个订单的总价
https://www.nowcoder.com/practice/4dda66e385c443d8a11570a70807d250
select cust_name,
Orders.order_num,
t.OrderTotal
from Customers
join Orders on Customers.cust_id=Orders.cust_id
join (select order_num,sum(quantity*item_price) as OrderTotal
from OrderItems
group by order_num) as t
on Orders.order_num=t.order_num
order by cust_name,order_num;
这样才显得专业
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