题解 | 牛客的课程订单分析(三)
牛客的课程订单分析(三)
https://www.nowcoder.com/practice/4ae8cff2505f4d7cb68fb0ec7cf80c57
select id,user_id,product_name,status,client_id,date
from order_info
where user_id in
(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
)
and date > '2025-10-15'
and status = 'completed'
and product_name in ('C++','Java','Python')
order by id
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