From: Regina Obe <lr@pcorp.us>
To: 'David Rowley' <david.rowley@2ndquadrant.com>
Cc: 'PostgreSQL-development' <pgsql-hackers@postgresql.org>
Subject: RE: Regression on PostgreSQL 10 ORDER/GROUP BY expression not found in targetlist
Date: Fri, 29 Jun 2018 13:30:03 -0400
Message-ID: <000701d40fce$d1098a50$731c9ef0$@pcorp.us> (raw)
In-Reply-To: <CAKJS1f9r9-u16wEkQT2sKh5wRf3DJVVPSwoNAoJnnyqhH39dDg@mail.gmail.com>
References: <001501d40f88$75186950$5f493bf0$@pcorp.us>
<CAKJS1f9r9-u16wEkQT2sKh5wRf3DJVVPSwoNAoJnnyqhH39dDg@mail.gmail.com>
> On 29 June 2018 at 21:06, Regina Obe <lr@pcorp.us> wrote:
> > I think the exact query that is triggering it is this one though I
> > don't have PostgreSQL 10 head installed locally to confirm.
> >
> > SELECT 't3280', 'L1b' || topology.TopoGeo_AddLinestring('bug3280',
> > geom) FROM bug3280.edge where edge_id = 1 ORDER BY 1;
>
> Can you try in REL_10_STABLE? There was a fix committed [1] for something
> very similar just a week ago.
>
> [1]
> https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=a4c95b0b80
> c70677c09c0d5c82a6fba875160288
>
> --
> David Rowley http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Training & Services
Thanks for this input. I guess I was mistaken about the commit that caused this
and it's most likely this one since this one fails as well.
Here is a trivial example to exercise that doesn't involve PostGIS.
CREATE TABLE edge AS SELECT 1 AS edge_id;
SELECT 't3280', 'L1b' || generate_series(1,10)
FROM edge
ORDER BY 1;
Now that said, I think I should change our test since it's using questionable assumptions anyway.
My only concern with this issue is that it's behavior that was allowed before in 10 a stable branch
and it's changing in a micro release.
I doubt few others would be bitten by though, but probably still worthwhile to put a note about it in the upcoming release notes
if this new behavior is kept.
Thanks,
Regina Obe
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To: pgsql-hackers@postgresql.org
Cc: lr@pcorp.us, david.rowley@2ndquadrant.com
Subject: RE: Regression on PostgreSQL 10 ORDER/GROUP BY expression not found in targetlist
In-Reply-To: <000701d40fce$d1098a50$731c9ef0$@pcorp.us>
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