Q&A for speakers of other languages learning English
select u.Id as [User Link], Count (p.Id) from Users u, Posts p where p.OwnerUserId = u.id and u.CreationDate >= '1 Oct 2013' and u.CreationDate < '1 Nov 2013' and p.CreationDate > '1 Feb 2014' group by u.id order by count (*) desc