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select 'total',
  (
    select count(Tags.Id)
    from Tags
    join PostTags on PostTags.TagId = Tags.Id
    join Posts on Posts.Id = PostTags.PostId
    where Posts.CreationDate > DATEADD(year, -2, GetDate())
      and Posts.CreationDate < DATEADD(year, -1, GetDate())
  ) as '2011',
  (
    select count(Tags.Id)
    from Tags
    join PostTags on PostTags.TagId = Tags.Id
    join Posts on Posts.Id = PostTags.PostId
    where Posts.CreationDate > DATEADD(year, -1, GetDate())
  ) as '2012'
from Tags allTheTags

fork query

edited aug 6 12

created aug 6 12 anonymous