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(select user_id,count(*) as rn
from order_info
where status='completed' and date>'2025-10-15'
and product_name in('C++','Java','Python')
group by user_id) sub
where rn>=2
order by user_id
查看15道真题和解析