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