Re: pgsql: Allow empty target list in SELECT.

From: Thom Brown <thom(at)linux(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-committers <pgsql-committers(at)postgresql(dot)org>
Subject: Re: pgsql: Allow empty target list in SELECT.
Date: 2014-10-22 20:13:14
Message-ID: CAA-aLv47DpdU5HToNQGuw6Zh74BXU3poACW=nH_FK4qmc73N+w@mail.gmail.com
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On 22 October 2014 22:06, Thom Brown <thom(at)linux(dot)com> wrote:

> On 22 October 2014 21:57, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
>> Thom Brown <thom(at)linux(dot)com> writes:
>> > On 15 December 2013 02:23, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> >> Allow empty target list in SELECT.
>>
>> > This commit introduces another bug:
>>
>> > # create table colours (id serial, name text, visible boolean);
>> > CREATE TABLE
>>
>> > # insert into colours (name, visible) values
>> >
>> ('blue',true),('yellow',true),('ultraviolet',false),('green',true),('infrared',false);
>> > INSERT 0 5
>>
>> > # select into colours2 from colours;
>> > SELECT 5
>>
>> > # select * from colours2;
>> > (No rows)
>>
>> That's just a pre-existing issue in psql that it's not terribly smart
>> about displaying zero-column rows. But what psql are you using?
>> I see
>>
>> regression=# select * from colours2;
>> --
>> (5 rows)
>>
>
> I'm using the one I built along with everything else:
>
> $ which psql
> /home/thom/Development/psql/bin/psql
>

I can see the same output as you if I get it to ignore my .psqlrc file:

# select * from colours2;
--
(5 rows)

Turns out it's "\x auto" causing it.

--
Thom

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