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
http://www.nowcoder.com/practice/ff77e82b59544a15987324e19488aafd
select order_num
from
(
select order_num, sum(quantity) as sum_num
from OrderItems
group by order_num
)a
where a.sum_num >=100
order by order_num
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