INSERT INTO friend_notify (from_user_id, to_user_id, type, status, content, create_time) VALUES (#{fromUserId}, #{toUserId}, #{type}, #{status}, #{content}, #{createTime}) SELECT * FROM friend_notify WHERE to_user_id = #{toUserId} AND status = 'unread' ORDER BY create_time DESC SELECT * FROM friend_notify WHERE to_user_id = #{toUserId} ORDER BY create_time DESC UPDATE friend_notify SET status = 'read', read_time = NOW() WHERE id = #{id}