-- 先找出满足超过1单条件的user_id; 再查询订单信息表去除user_id中不符合条件的订单。select * from order_info where user_id in ( select user_id from order_info where datediff(date, '2025-10-15') > 0 and status = 'completed' and product_name in ('Java','Python','C++') group by user_id having count(produc...