Q&A for professional and enthusiast programmers
declare @start datetime = ( select top 1 dateadd(day, datediff(day, getdate(), CreationDate), getdate()) from Posts group by datediff(day, getdate(), CreationDate) having count(*) >= ##betathreshold?10## order by datediff(day, getdate(), CreationDate) ); declare @stop datetime = ( select top 1 dateadd(day, datediff(day, getdate(), CreationDate), getdate()) from Posts group by datediff(day, getdate(), CreationDate) having count(*) >= ##betathreshold## order by datediff(day, getdate(), CreationDate) desc ); select dateadd(week, datediff(week, @start, CreationDate), @start), pt.Name, count(*)/7.0 Post from PostsWithDeleted join PostTypes pt on pt.id=PostTypeId where CreationDate between @start and @stop and pt.id < 3 group by datediff(week, @start, CreationDate), pt.Name order by datediff(week, @start, CreationDate)