Q&A for professional and enthusiast programmers
select u.id, u.displayname, p.creationdate, count(p.id) as 'count of posts' , count(u.id) as 'count of users ' from users u join posts p on p.owneruserid = u.id join posttypes pt on pt.id = p.posttypeid where pt.id = 1 --and u.location like '%Ru%' group by u.id, u.displayname, p.creationdate --order by year(p.creationdate) desc