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Q&A for experienced flyers, pilots, and builders of drones and model aircraft

select cast(avg(a.questions) as float)  from (
select parentid, count(*) questions from posts where posttypeid = 2 and parentid is not null
and datepart(year,creationdate) = 2015
group by parentid ) a

fork query

edited mar 10 19

created jan 8 19 anonymous