The top 20 questions with the most down-votes (ignores up-votes)
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
select PostId AS [Post Link], max(CreationDate) as 'last_comment'
from (select top 50 * from comments) c
group by PostId;
select c1.PostId, c1.text, c1.CreationDate
from comments c1
select PostId, max(CreationDate) as 'last_comment'
group by PostId
) c2 on c1.PostId = c2.PostId and c1.CreationDate = c2.last_comment ;