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select *, sqrt(score*score*posts) as truerank from
(select
tagname, sum(score) as score, count(*) as posts from
--* from
((SELECT
  t.TagName,
  a.Score as Score
FROM Posts a INNER JOIN Posts q ON q.Id=a.ParentId
  INNER JOIN PostTags pt ON q.Id = pt.PostId
  INNER JOIN Tags t ON pt.TagId = t.Id
WHERE (a.OwnerUserId=##userid##)
AND (a.CommunityOwnedDate IS NULL)) 
UNION all

SELECT
  t.TagName,
  0 as Score
FROM Posts q 
  INNER JOIN PostTags pt ON q.Id = pt.PostId
  INNER JOIN Tags t ON pt.TagId = t.Id
WHERE (q.OwnerUserId=##userid##)
AND (q.parentid is null)
AND (q.CommunityOwnedDate IS NULL)
) bb

GROUP BY Tagname   
)d
ORDER BY Score DESC, posts desc

fork query

edited aug 12 22 anonymous

created dec 10 20 Martin20528