Re: SELECT DISTINCT ON removes results

[Guyren Howe <guyren@xxxxxxxxx>]

On Oct 28, 2016, at 14:15 , Guyren Howe <guyren@xxxxxxxxx> wrote:

On Oct 28, 2016, at 13:50 , David G. Johnston <david.g.johnston@xxxxxxxxx> 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.