题解 | #确定最佳顾客的另一种方式（二）#
确定最佳顾客的另一种方式（二）
http://www.nowcoder.com/practice/b5766f970ae64ac7944f37f5b47107aa
select Customers.cust_name, sum(OrderItems.item_price * OrderItems.quantity) total_price from OrderItems join Orders on OrderItems.order_num = Orders.order_num join Customers on Orders.cust_id = Customers.cust_id group by Customers.cust_name having total_price>=1000 先分组再过滤条件
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