题解 | #牛客的课程订单分析(三)#

select * from order_info where user_id in (
    select a.user_id from (
    select * from order_info
    where date > '2025-10-15' and status = 'completed' and product_name in ('C++', 'Python','Java')
) a group by a.user_id
having count(*) >=2
) and date > '2025-10-15' and status = 'completed' and product_name in ('C++', 'Python','Java') order by id