Re: INSERT .. ON CONFLICT DO SELECT [FOR ..]

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: Marko Tiikkaja <marko(at)joh(dot)to>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: INSERT .. ON CONFLICT DO SELECT [FOR ..]
Date: 2017-08-15 05:43:29
Message-ID: CAH2-WzmwbWTE4WcXX-wMXtPBjS6zA6MgbqcDLm3pTbHT5if2Wg@mail.gmail.com
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On Mon, Aug 14, 2017 at 6:23 PM, Marko Tiikkaja <marko(at)joh(dot)to> wrote:
> Attached is a patch for $SUBJECT. It might still be a bit rough around the
> edges and probably light on docs and testing, but I thought I'd post it
> anyway so I won't forget.

Is it possible for ON CONFLICT DO SELECT to raise a cardinality
violation error? Why or why not?

--
Peter Geoghegan

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