题解 | #牛客的课程订单分析(三)#

select *
from order_info
where user_id in (
    select user_id
    from order_info
    where date > '2025-10-15'
    and product_name in ('Python', 'Java', 'C++')
    and status = 'completed'
    group by user_id
    having count(date) >= 2
)
and date > '2025-10-15'
and product_name in ('Python', 'Java', 'C++')
and status = 'completed'
order by id;