做一个查询，以获得数据行中排名前3的user_id id？

Question

我想做一个查询，我得到前3名撰稿人，即他们写了最多的页面/帖子。我会通过与每行关联的用户的session_id选择数据，即他们写入的页面。我想选择并排列数据库中行数最多的前3名。我如何查询这个？我在想......

SELECT DISTINCT user_id 
FROM music_spot 
WHERE (need a condition here) 
ORDER BY (the person who contributed the most pages to the third 
LIMIT 3 

我怎么会做这样的事情？谢谢。

Answer 1

SELECT user_id 
FROM music_spot 
WHERE session_id = 123 
ORDER BY count(user_id) desc 
group by user_id 
LIMIT 3 

Answer 2

SELECT user_id, COUNT(post_id) 
FROM music_spot 
GROUP BY UserID 
ORDER BY COUNT(user_id) DESC 
LIMIT 0,3 

Answer 3

SELECT user_id, COUNT(row_id) 
FROM music_spot 
GROUP BY user_id 
ORDER BY COUNT(user_id) DESC 
LIMIT 0,3