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DECLARE @Tag1 nvarchar(max) = 'angularjs' DECLARE @Tag2 nvarchar(max) = 'knockout.js' DECLARE @1MonthsAgo datetime = DATEADD(month, -1, GETDATE()) DECLARE @2MonthsAgo datetime = DATEADD(month, -2, GETDATE()) DECLARE @3MonthsAgo datetime = DATEADD(month, -3, GETDATE()) DECLARE @4MonthsAgo datetime = DATEADD(month, -4, GETDATE()) DECLARE @Tag1Count1Months decimal (12,6), @t1g1 nvarchar(max) DECLARE @Tag1Count2Months decimal (12,6), @t1g2 nvarchar(max) DECLARE @Tag1Count3Months decimal (12,6), @t1g3 nvarchar(max) DECLARE @Tag1Count4Months decimal (12,6) DECLARE @Tag2Count1Months decimal (12,6), @t2g1 nvarchar(max) DECLARE @Tag2Count2Months decimal (12,6), @t2g2 nvarchar(max) DECLARE @Tag2Count3Months decimal (12,6), @t2g3 nvarchar(max) DECLARE @Tag2Count4Months decimal (12,6) -- Tag 1 Activity Last 3 months SET @Tag1Count4Months = (SELECT COUNT(*) AS Posts FROM Tags INNER JOIN PostTags ON PostTags.TagId = Tags.id INNER JOIN Posts ON Posts.ParentId = PostTags.PostId where tagname = @Tag1 AND posts.creationdate > @1MonthsAgo group by tagname); SET @Tag1Count3Months = (SELECT COUNT(*) AS Posts FROM Tags INNER JOIN PostTags ON PostTags.TagId = Tags.id INNER JOIN Posts ON Posts.ParentId = PostTags.PostId where tagname = @Tag1 AND posts.creationdate > @2MonthsAgo and posts.creationdate < @1MonthsAgo group by tagname); SET @Tag1Count2Months = (SELECT COUNT(*) AS Posts FROM Tags INNER JOIN PostTags ON PostTags.TagId = Tags.id INNER JOIN Posts ON Posts.ParentId = PostTags.PostId where tagname = @Tag1 AND posts.creationdate > @3MonthsAgo and posts.creationdate < @2MonthsAgo group by tagname); SET @Tag1Count1Months = (SELECT COUNT(*) AS Posts FROM Tags INNER JOIN PostTags ON PostTags.TagId = Tags.id INNER JOIN Posts ON Posts.ParentId = PostTags.PostId where tagname = @Tag1 AND posts.creationdate > @4MonthsAgo and posts.creationdate < @3MonthsAgo group by tagname); set @t1g1 = (select convert(varchar,convert(decimal(5,2),(@Tag1Count3Months-@Tag1Count4Months) / @Tag1Count3Months* 100.0)) + '%') SELECT 'Tag', 'Posts', 'Change' UNION ALL SELECT 'Tag', 'Posts', 'Change'