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Q&A about the site for programming puzzle enthusiasts and code golfers

-- At what hour do I ask most posts, both questions and answers?
-- UTC (GMT) time zone. The week starts with Sunday.
-- Parameters:
--   UserId
--   HourOrDOW (1 - hours, 2 - day of week)

-- DEFINE @var = DATEPART("weekday", CreationDate), DATENAME("hour", CreationDate);

WITH grouped AS
  (
  SELECT  *, (DATEPART("weekday", CreationDate) + DATEPART("hour", CreationDate) / 24) AS cd
  FROM    Posts
  )
SELECT
    cd,
    COUNT(*) AS [Number of posts]
  FROM grouped
  GROUP BY cd

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edited dec 21 13

created dec 21 13 Anton.