Re: Intersection or zero-column queries

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Victor Yegorov <vyegorov(at)gmail(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: Intersection or zero-column queries
Date: 2017-12-22 02:42:36
Message-ID: CAKFQuwahiuROAL-4cT9RBZGJmSd-4N2Aex2k+-5adkCv_B2O3w@mail.gmail.com
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On Thursday, December 21, 2017, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> which would only be the right plan for UNION ALL.
>
> So yeah, it's wrong ... but personally I'm not terribly excited
> about fixing it. Maybe somebody else wants to; but what's the
> practical use?
>

How about just erroring out?

David J.

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