mysql查询多个项目的订单

Question

是可以按多个订单排序吗？

我希望我的用户通过last_activity进行排序，但在同一时间，我想用图片的用户的人出庭，而不

事情是这样的：

SELECT some_cols 
FROM `prefix_users` 
WHERE (some conditions) 
ORDER BY last_activity, pic_set DESC; 

Answer 1

SELECT some_cols 
FROM prefix_users 
WHERE (some conditions) 
ORDER BY pic_set DESC, last_activity; 

Answer 2

排序图片，然后按活动：

SELECT some_cols 
FROM `prefix_users` 
WHERE (some conditions) 
ORDER BY pic_set, last_activity DESC; 

Answer 3

SELECT id, user_id, video_name 
FROM sa_created_videos 
ORDER BY LENGTH(id) ASC, LENGTH(user_id) DESC