题解 | 牛客的课程订单分析(二)
牛客的课程订单分析(二)
https://www.nowcoder.com/practice/4ca4137cb490420cad06d2147ae67456
select user_id from order_info where status='completed' and date > '2025-10-15' and product_name in ('C++','Java','Python') group by user_id having count(id)>=2 order by user_id