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

select count(distinct PostId) from posthistory
where PostId in (
select PostId from posthistory
inner join posts on posts.id = posthistory.postid
where posthistorytypeid = 16 and posts.posttypeid=1)
and  posthistorytypeid = 9

fork query

edited nov 12 18

created jan 9 15 anonymous