题解 | #牛客的课程订单分析(二)#分组计数筛选

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