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）
https://www.nowcoder.com/practice/b5766f970ae64ac7944f37f5b47107aa
select cust_name,sum(item_price*quantity) total_price
from Customers c
left join Orders o on c.cust_id=o.cust_id
left join OrderItems i on i.order_num=o.order_num
group by cust_name
having total_price>=1000;
