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Q&A for music historians, critics, and fans

select qlist.uid as userId, count(p.Id) as answer_count,AVG(p.Score) as a_score, var(p.Score) as scorevariance, max(p.Score) as maxscore, AVG(p.CommentCount) as a_comment,
datediff(month,cast('2015-03-01' as datetime), p.CreationDate) as month
from Posts p, 

(select p.Id as pid, userlist.uid as uid, p.CreationDate as qdate

from Posts p, PostTags pt,
(select p.OwnerUserId as uid 
from Posts p,  PostTags pt, Users u
where p.OwnerUserId=u.Id and p.Id=pt.PostId
and (pt.TagId=4190 or pt.TagId=67719 or pt.TagId=20400)  
and p.PostTypeid=1
and p.CreationDate>=cast('2015-03-01' as datetime) 
and p.CreationDate<=cast('2017-03-31' as datetime) 
group by p.OwnerUserId
) userlist

where userlist.uid=p.OwnerUserId and p.CreationDate>=cast('2015-03-01' as datetime) and p.CreationDate<=cast('2017-03-31' as datetime) and p.PostTypeId=1
and pt.PostId = p.Id
and (pt.TagId=4190 or pt.TagId=67719 or pt.TagId=20400) 
) qlist

where p.ParentId=qlist.pid and p.PostTypeId=2
group by qlist.uid, datediff(month,cast('2015-03-01' as datetime), p.CreationDate)
order by qlist.uid, datediff(month,cast('2015-03-01' as datetime), p.CreationDate)

fork query

edited oct 13 19

created oct 11 19 anonymous