Q&A for experienced flyers, pilots, and builders of drones and model aircraft
SELECT count(Posts.Id) from posthistory inner join posts on posts.id = posthistory.postid inner join Users on posthistory.UserId= users.Id where PostHistoryTypeId=16 and PostTypeId=1 and DATEDIFF(minute, Posts.CreationDate, Posts.CommunityOwnedDate)<30 and UserId=Posts.OwnerUserId and UserId!=-1