题解 | #牛客的课程订单分析(三)#
牛客的课程订单分析(三)
http://www.nowcoder.com/practice/4ae8cff2505f4d7cb68fb0ec7cf80c57
select id,user_id,product_name, status, client_id, date
from (
select *,count(*) over(partition by user_id) cnt
from order_info
where date>'2025-10-15' and order_info.status = 'completed'
and order_info.product_name in('C++','Java','Python')
) tmp
where cnt>1
order by id
