题解 | #返回订单数量总和不小于100的所有订单的订单号#
返回订单数量总和不小于100的所有订单的订单号
https://www.nowcoder.com/practice/ff77e82b59544a15987324e19488aafd
1. group by 分组子句和 having 针对分组条件查询子句和order by 针对最终查询结果排序 子句 的灵活运用。 select order_num from OrderItems group by order_num having sum(quantity) >= 100 order by order_num ;
