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From: Marko Tiikkaja <marko@joh.to>
To: Pantelis Theodosiou <ypercube@gmail.com>
To: pgsql-docs@postgresql.org
Subject: Re: CTEs modifying the same table more than once
Date: Sat, 1 Oct 2016 13:22:15 +0200
Message-ID: <3a2cae10-2b5a-4f15-e257-0c985e423f0e@joh.to> (raw)
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On 2016-10-01 13:13, Pantelis Theodosiou wrote:
> I answered that this is unpredictable behaviour but the docs state only the
> update-update and update-delete cases explicitly and the general wording is
> about 2 updates.

It's documented[1] behavior:

   "All the statements are executed with the same snapshot (see Chapter 
13), so they cannot "see" one another's effects on the target tables."


.m

[1] https://www.postgresql.org/docs/current/static/queries-with.html


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