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Q&A for serious players and enthusiasts of chess

SELECT
  DATEFROMPARTS(
    DATEPART(yyyy, CreationDate),
    DATEPART(mm, CreationDate),
    1) AS Month,
  100.0 *
    COUNT(CASE
      WHEN Score > 0 AND ClosedDate IS NULL AND DeletionDate IS NULL THEN 1
      ELSE NULL END) /
    COUNT(*) AS Pct
FROM PostsWithDeleted
WHERE PostTypeId = 1
GROUP BY DATEFROMPARTS(
  DATEPART(yyyy, CreationDate),
  DATEPART(mm, CreationDate),
  1)
ORDER BY Month DESC

fork query

edited jul 23 19

created jul 23 19 peterh - PLEASE DELETE THIS ACCOUNT