题解 | #牛客的课程订单分析(四)#
牛客的课程订单分析(四)
https://www.nowcoder.com/practice/c93d2079282f4943a3771ca6fd081c23
select
user_id,
min(date) as first_buy_date,
count(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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