Q&A for professional and enthusiast programmers
select count(*) from Posts q inner join Posts a on q.Id = a.ParentId where q.OwnerUserId = a.OwnerUserId and q.PostTypeId = 1 and a.PostTypeId = 2 and q.Score >= 10 and a.Score >= 20 and q.CommunityOwnedDate is null and a.CommunityOwnedDate is null and a.Id = (select top 1 Id from Posts where ParentId = q.Id order by Score desc) and q.CreationDate >= '2013-01-01'