From: | Andres Freund <andres(at)anarazel(dot)de> |
---|---|
To: | Thom Brown <thom(at)linux(dot)com> |
Cc: | Peter Geoghegan <pg(at)heroku(dot)com>, hlinnaka <hlinnaka(at)iki(dot)fi>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: INSERT ... ON CONFLICT UPDATE/IGNORE 4.0 |
Date: | 2015-05-20 16:54:06 |
Message-ID: | 20150520165406.GD27868@alap3.anarazel.de |
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Lists: | pgsql-admin pgsql-hackers |
On 2015-05-20 17:44:05 +0100, Thom Brown wrote:
> On 8 May 2015 at 16:03, Andres Freund <andres(at)anarazel(dot)de> wrote:
> > So I've committed the patch yesterday evening. I'm pretty sure there'll
> > be some more minor things to change. But overall I feel good about the
> > current state.
> >
> > It'd be quite helpful if others could read the docs, specifically for
> > insert, and comment whether they're understandable. I've spent a fair
> > amount of time trying to make them somewhat simpler, but I do think I
> > only succeeded partially. And there's also my own brand of english to
> > consider ;)
>
> The docs say "Note that exclusion constraints are not supported with
> ON CONFLICT DO UPDATE."
>
> But I get the following error message text:
>
> "ERROR: there is no unique or exclusion constraint matching the ON
> CONFLICT specification"
>
> This implies that an exclusion constraint is valid in the statement,
> which contradicts the docs. Which one is correct?
ON CONFLICT can be used for ... DO NOTHING as well.
Greetings,
Andres Freund
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