Q&A for ebook publishers and readers
select Tags.TagName, count(Tags.TagName) c from Users join Posts on Users.ID = Posts.OwnerUserId join PostTags on PostTags.PostId =Posts.Id join Tags on Tags.Id = PostTags.TagId where datalength(AboutMe) > 0 and LastAccessDate > DATEADD(year, -1, GetDate()) and datalength(Posts.Tags) > 0 and upper(AboutMe) like '%PROFESSIONAL%' group by Tags.TagName order by c DESC