SQL - 为了通过对每个组

Question

我有一个查询，看起来像这样：

SELECT 
    USER .id, 
    listing.country, 
    count(listing.id) AS count 
FROM USER 
INNER JOIN listing ON USER.id = listing.user_id 
GROUP BY listing.country, USER.id 
ORDER BY count DESC; 

，结果我得到这个样子的：

但是我想它按国家分组，以便用户可以根据其列表数量按国家排列。有没有办法来解决这个问题？

Answer 1

你可以有多个ORDER BY列：

SELECT `user`.`id`, 
     `listing`.`country`, 
     count(`listing`.`id`) as `count` 
FROM `user` 
INNER JOIN `listing` ON (`user`.`id` = `listing`.`user_id`) 
GROUP BY `listing`.`country,` `user`.`id` 
ORDER BY `country`, `count` DESC;