MySQL join two tables, find max count and order by

Question

I am rather newbie in SQL and before this moment I only used simple queries, but now I have a problem. I have two tables. First is rating:

id  u         


        

Answer 1

select daybook.userid, count(*) as count 
    from daybook, rating 
    where daybook.userid = rating.userid
    group by daybook.userid
    order by count desc

But you dont even really need the daybook table:

select userid, count(*) as count
   from rating
   group by userid
   order by count desc