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 c.cust_name, sum(oo.item_price * oo.quantity) as total_price from Orders AS o inner join Customers as c on o.cust_id = c.cust_id inner join OrderItems as oo on o.order_num = oo.order_num group by c.cust_name having total_price >= 1000
如果有两张以上的多表查询可以使用:
select....
from....
where.....;
这样的结构,可以少写两个inner join。