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Plots quartiles of the answer score distribution as a function of answer length.

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WITH 
AllQuartiles(RoundedLength,PostScore,Quartile)
AS (
  SELECT TOP(1000000000) 
  ROUND(LEN(Body), -##exp?3##)+0.5E3 AS RoundedLength,
  Score AS PostScore,
  NTILE(4) OVER(PARTITION BY ROUND(LEN(Body), -3) ORDER BY Score) AS Quartile
  FROM Posts
  WHERE 
    PostTypeId = 2 AND
    LEN(Body) <= 12000
  ORDER BY
    ROUND(LEN(Body), -3),Score
)
SELECT 
  RoundedLength,MAX(PostScore)
FROM 
  AllQuartiles
WHERE
  Quartile!=4
GROUP BY
  Quartile,RoundedLength
ORDER BY
  RoundedLength,Quartile

view current version

edited jul 24 14 E.P.

created jul 24 14 Chris White