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Forked from query #59734 by sam.saffron. How many questions per month does each tag of your choice get? Now defaults to two tags, but it's easy to add more (up to 10k?). See http://stackoverflow.com/questions/1869753/maximum-size-for-a-sql-server-query-in-clause-is-there-a-better-approach

Q&A for Ubuntu users and developers

Declare @Tag1 varchar(20)
Declare @Tag2 varchar(20)


set @Tag1 = isnull(##tag1:string##, 'javascript')
set @Tag2 = isnull(##tag2:string##, 'java')


select *, count(*) from
(
  select CAST(
      cast(DATEPART(YYYY, CreationDate) as varchar) + '-' + cast(DATEPART(MM, CreationDate) as varchar) + '-01'
    as datetime) [Month], 
    t.TagName
  from Posts p 
  join PostTags pt on pt.PostId = p.Id
  join Tags t on t.Id = pt.TagId
  where TagName in 
  (
  @Tag1, 
  @Tag2
  )
) as X
group by TagName, [Month]
order by [Month] asc, TagName asc

fork query

edited aug 1 12 knb

created jan 16 12 sam.saffron