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Portuguese Language

Q&A for linguists, teachers and learners wanting to discuss the finer points of the Portuguese language

-- The best time to ask questions
-- Look for the minimum value on y-scale:
-- It says when the time between question and answer is minimal.
-- For example

SELECT TOP 5 *, DATEDIFF(minute, q.CreationDate, a.CreationDate) as diffMin,
         ROUND((CAST(DATEPART("weekday", q.CreationDate) AS float) +
                CAST(DATEPART("hour", q.CreationDate) AS float) / 24), 2) as cat
  FROM Posts q
    LEFT OUTER JOIN Posts a ON q.AcceptedAnswerId = a.Id
  WHERE q.AcceptedAnswerId > 0
/*
WITH tmp AS
(
  SELECT *, DATEDIFF(minute, q.CreationDate, a.CreationDate) as diffMin,
         ROUND((CAST(DATEPART("weekday", q.CreationDate) AS float) +
                CAST(DATEPART("hour", q.CreationDate) AS float) / 24), 2) as cat
  FROM Posts q
    LEFT OUTER JOIN Posts a ON q.AcceptedAnswerId = a.Id
  WHERE q.AcceptedAnswerId > 0
  )
  SELECT cat, AVG(diffMin)
FROM Posts
GROUP BY cat
*/

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