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select dateadd(month, datediff(month, 0, q.CreationDate), 0) m, TagName, count(*) from PostTags pt join Posts q on q.Id=pt.PostId join Tags t on t.Id=pt.TagId where TagName in ('go') and q.CreationDate < dateadd(month, datediff(month, 0, getdate()), 0) group by dateadd(month, datediff(month, 0, q.CreationDate), 0), TagName order by dateadd(month, datediff(month, 0, q.CreationDate), 0)