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Q&A for scientists using computers to solve scientific problems

WITH 

dates(date) AS (
   SELECT DISTINCT CAST(CreationDate AS DATE)
   FROM Posts
   WHERE OwnerUserId = ##UserId##
),

groups AS (
    SELECT
      ROW_NUMBER() OVER (ORDER BY date) AS rn,
      dateadd(day, -ROW_NUMBER() OVER (ORDER BY date), date) AS grp,
      date
    FROM dates
  )
  
SELECT
  COUNT(*) AS consecutiveDates,
  MIN(date) AS minDate,
  MAX(date) AS maxDate
FROM groups
GROUP BY grp
ORDER BY 1 DESC, 2 DESC

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edited jun 3 anonymous

created nov 7 15 Lukas Eder