题解 | #牛客的课程订单分析(二)#分组计数筛选
牛客的课程订单分析(二)
https://www.nowcoder.com/practice/4ca4137cb490420cad06d2147ae67456
select distinct user_id
from (
select *,
count(status) over(partition by user_id) cnt
from order_info
where date>'2025-10-15' and status='completed'
and product_name in ('C++','Java','Python')
) t
where cnt>=2
order by user_id
