Re: insert ... delete ... returning ... ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>
Cc: "Mark Mielke" <mark(at)mark(dot)mielke(dot)cc>, Postgresql-Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: insert ... delete ... returning ... ?
Date: 2008-02-24 22:44:52
Message-ID: 8368.1203893092@sss.pgh.pa.us
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"Jonah H. Harris" <jonah(dot)harris(at)gmail(dot)com> writes:
> Not stupid, it doesn't work :) This was a limitation of the original
> design based on (IIRC) executor-related issues.

There are definitional issues not only implementation ones; in
particular, in subquery-like cases it's entirely unclear how many times
the DML operation will or should get evaluated.

regards, tom lane

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