From: | Michael Paquier <michael(at)paquier(dot)xyz> |
---|---|
To: | Andres Freund <andres(at)anarazel(dot)de> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: SQL-standard function body |
Date: | 2021-04-08 07:54:56 |
Message-ID: | YG620HiF8Huz/YIn@paquier.xyz |
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Lists: | pgsql-hackers |
On Wed, Apr 07, 2021 at 11:35:14PM -0700, Andres Freund wrote:
> On 2021-04-08 01:41:40 -0400, Tom Lane wrote:
>> Andres Freund <andres(at)anarazel(dot)de> writes:
>> FWIW, I think the long-term drift of things is definitely that
>> we want to have the querystring available everywhere. Code like
>> executor_errposition is from an earlier era before we were trying
>> to enforce that. In particular, if the querystring is available in
>> the leader and not the workers, then you will get different error
>> reporting behavior in parallel query than non-parallel query, which
>> is surely a bad thing.
>
> Yea, I think it's a sensible direction - but I think we should put the
> line in the sand earlier on / higher up than ExecInitParallelPlan().
Indeed, I agree that enforcing the availability of querystring
everywhere sounds like a sensible thing to do in terms of consistency,
and that's my impression when I scanned the parallel execution code,
and I don't really get why SQL function bodies should not bind by this
rule. Would people object if I add an open item to track that?
--
Michael
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