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Q&A for people interested in the history and origins of science and mathematics

SELECT 
number = ROW_NUMBER() OVER (ORDER BY format(p.CreationDate, 'yyyy-MM')),
format(p.CreationDate, 'yyyy-MM'), AVG(cast(p.Score as decimal))
FROM PostsWithDeleted p
WHERE p.PostTypeId=1
GROUP BY format(p.CreationDate, 'yyyy-MM')
ORDER BY format(p.CreationDate, 'yyyy-MM')

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created jan 15 19 Martin20528