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Q&A for professional and enthusiast programmers

SELECT
  UserId, UserDisplayName,
  COUNT(*) OVER (PARTITION BY UserId) AS No
FROM (
  SELECT DISTINCT UserId, UserDisplayName
  FROM PostHistory
  WHERE UserId IS NOT NULL AND UserDisplayName IS NOT NULL
  ) p
ORDER BY No DESC, UserId

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edited apr 13 19

created apr 13 19 peterh (2)