这里直接用了“>”来比较日期关系，比较暴力哈哈！
参考题解可以使用：datediff(date,"2025-10-15")>0 来判断；
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(id) >= 2
order by user_id
;