On Oct 28, 2016, at 14:15 , Guyren Howe <guy...@gmail.com> wrote: > > On Oct 28, 2016, at 13:50 , David G. Johnston <david.g.johns...@gmail.com > <mailto:david.g.johns...@gmail.com>> wrote: >> >> On its face the statement "DISTINCT ON removes results" is not at all >> surprising given its definition. > > What is surprising is that it removes *all* results…
The inner query on its own appears to produce the same results, but the left join with it in either case produces different results.