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 c.cust_name cust_name,o.order_num,t.OrderTotal as OrderTotal from Customers c join Orders o on c.cust_id=o.cust_id join (select order_num,ROUND(sum(quantity*item_price),3) as OrderTotal from OrderItems group by order_num) t on t.order_num=o.order_num order by c.cust_name,t.OrderTotal asc
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