Q&A for peer programmer code reviews
select Id as [Post Link] from Posts p where exists( select * from PostHistory ph where ph.PostId = p.Id and ph.PostHistoryTypeId = 11 and ph.UserId = 9357 and substring(ph.text,18, 5) = '9357,') and exists( select * from PostHistory ph where ph.PostId = p.Id and ph.PostHistoryTypeId = 10 and (ph.UserId != 9357 or substring(ph.text,18, 5) != '9357,'))