Average score of a first question (per month)


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Q&A for power users of Apple hardware and software

;with firstpostids_cte as (
SELECT MIN(Id) AS MinId, OwnerUserId
FROM PostsWithDeleted
WHERE PostTypeId=1
GROUP BY OwnerUserId
, firstpostsclosed_cte as (
p.Id, p.CreationDate AS cre, p.Score AS sco
FROM firstpostids_cte fp JOIN PostsWithDeleted p ON fp.MinId=p.Id

number = ROW_NUMBER() OVER (ORDER BY format(cre, 'yyyy-MM')),
format(cre, 'yyyy-MM'), AVG(cast(sco as decimal))
FROM firstpostsclosed_cte
GROUP BY format(cre, 'yyyy-MM')
ORDER BY format(cre, 'yyyy-MM')

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