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Q&A for those who study, teach, research and apply economics and econometrics

SELECT Year(p.CreationDate) [year],
  COUNT(p.Id) AS [Total Posts],
  SUM(case when p.PostTypeId = 1 then 1 else 0 end) AS [Total Questions],
  SUM(case when p.PostTypeId = 2 then 1 else 0 end) AS [Total Answers]
FROM Posts p
GROUP BY Year(p.CreationDate)
ORDER BY Year(p.CreationDate)

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created nov 30 23 Martin20528