MySQL ORDER BY total rows of user in another table

Question

Suppose, I want to show a list of users ordering by the most number of messages they have sent.

I have 2 tables: Users and Messages

I h

Answer 1

You can sort using an alias:

SELECT user, COUNT(1) as cnt
FROM Messages 
GROUP BY user 
ORDER BY cnt DESC;

or position:

SELECT user, COUNT(1) as cnt
FROM Messages 
GROUP BY user 
ORDER BY 2 DESC;

Answer 2

if you want to print the names join users table,

select user_name, count(*) from users inner join messages m on users.userid=m.messageid group by userid order by count(*) desc;

Answer 3

SELECT user, COUNT(*) FROM messages GROUP BY user ORDER BY count(*) DESC;