Re: v12.0: ERROR: could not find pathkey item to sort

On Sun, Oct 13, 2019 at 02:06:02PM -0400, Tom Lane wrote:
> Justin Pryzby <pryzby@telsasoft.com> writes:
> > On Fri, Oct 11, 2019 at 10:48:37AM -0400, Tom Lane wrote:
> >> Could you provide a self-contained test case please?
> 
> > [ test case ]
> 
> Oh, this is the same issue Amit described in 
> 
>
https://www.postgresql.org/message-id/flat/CA%2BHiwqG2WVUGmLJqtR0tPFhniO%3DH%3D9qQ%2BZ3L_ZC%2BY3-EVQHFGg%40mail.gmail.com
> 
> namely that we're not generating EquivalenceClass members corresponding
> to sub-joins of a partitionwise join.
> 
> Are you interested in helping to test the patches proposed there?

Sure.  Any requests other than testing that our original query works correctly
and maybe endeavoring to read the patch ?

BTW it probably should've been documented as an "Open Item" for v12.

-- 
Justin Pryzby
System Administrator
Telsasoft
+1-952-707-8581