Re: Intersection or zero-column queries

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
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 02:59:46
Message-ID: 9337.1513911586@sss.pgh.pa.us
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"David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> On Thursday, December 21, 2017, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> 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?

Hm, yeah, inserting a FEATURE_NOT_SUPPORTED error might be an
appropriate amount of effort.

regards, tom lane

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