题解 | #牛客的课程订单分析(三)#
牛客的课程订单分析(三)
https://www.nowcoder.com/practice/4ae8cff2505f4d7cb68fb0ec7cf80c57
--
select id,user_id,product_name,status,client_id,date from (select *,count(*) over( PARTITION by user_id ) as cnt from order_info where date >'2025-10-15' and status='completed' and product_name in ('C++','Java','Python') ) a where cnt >=2 order by id;
