Q&A about the site for members of the workforce navigating the professional setting
select t.tagname, count (distinct p.owneruserid) as Users from users u, posts p, posttags pt, tags t where p.owneruserid = u.id and p.posttypeid = 2 and p.score > 0 and pt.postid=p.ParentId and t.id = pt.tagid and (t.tagname='amazon-web-service') group by t.tagname