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Stack Exchange Data Explorerは、Stack Exchange データベースに対する SQL クエリを許可します。次のクエリ—</p> 

select
  month(CreationDate) month,
  year(CreationDate) year,
  sum(case when lower(left(Title,2))='wh' then 1 else 0 end)/count(*) wh,
  (select sum(Score)/count(*)
   from Posts u
   where
     month(CreationDate)=month(t.CreationDate) and
     year(CreationDate)=year(t.CreationDate) and
     lower(left(Title,2))='wh' and
     PostTypeId=1 -- question
  ) wh_score,
  sum(Score)/count(*) score,
  (select sum(AnswerCount)/count(*)
   from Posts u
   where
     month(CreationDate)=month(t.CreationDate) and
     year(CreationDate)=year(t.CreationDate) and
     lower(left(Title,2))='wh' and
     PostTypeId=1 -- question
  ) wh_answers,
  sum(AnswerCount)/count(*) answers
from Posts t
where PostTypeId=1 -- question
group by month(CreationDate), year(CreationDate)
;

— Scorpi0の厚意により— 結果のすべての整数値が得られます。すべてが丸められるか、切り捨てられます (どちらかはわかりません)。wh(これは、すべての値が である列では特に厄介です0。) 10 進数または値を強制する方法はありますか?

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