题解 | #牛客的课程订单分析(四)#
牛客的课程订单分析(四)
https://www.nowcoder.com/practice/c93d2079282f4943a3771ca6fd081c23
select user_id,min(date),count(user_id)
from (
select *,count(user_id)over(partition by user_id) xia
from (
select *
from order_info
where date>'2025-10-15' and status='completed' and product_name in ('C++','Java','python')
) a
) b
where xia>=2
group by user_id
order by user_id;
