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
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