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Q&A for scientists using computers to solve scientific problems

WITH Batches AS (
SELECT
  DATEADD(mm, DATEPART(mm, Posts.CreationDate)-1, DATEADD(yy, DATEPART(yyyy, Posts.CreationDate)-1900, 0)) as [Date],
  COUNT(*) as Total,
  SUM(CASE when Posts.LastEditorUserId is not null then 1 else 0 END) as [Edited]
FROM
  Posts
GROUP BY
  DATEPART(yyyy, Posts.CreationDate),
  DATEPART(mm, Posts.CreationDate)
)
  
SELECT
  [Date],
  Total,
  Edited
FROM Batches
ORDER BY Date;

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edited feb 17 20

created feb 17 20 sth29263