Re: PATCH: psql boolean display

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Phil Sorber <phil(at)omniti(dot)com>, PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: PATCH: psql boolean display
Date: 2012-08-20 21:10:44
Message-ID: CAFj8pRBeuCFUT=dbP=vh8Xj2=eeR4pg3vQZ2k3XzsyggNKswbg@mail.gmail.com
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2012/8/20 Robert Haas <robertmhaas(at)gmail(dot)com>:
> On Sun, Aug 19, 2012 at 12:02 PM, Phil Sorber <phil(at)omniti(dot)com> wrote:
>> I am providing a patch to allow you to change the output of a boolean
>> value in psql much like you can do with NULL. A client requested this
>> feature and we thought it may appeal to someone else in the community.
>>
>> The patch includes updated docs and a regression test. The code
>> changes themselves are pretty simple and straightforward.
>>
>> Example from the regression test:
>>
>> SELECT true, false;
>> bool | bool
>> ------+------
>> t | f
>> (1 row)
>>
>> \pset booltrue 'foo'
>> \pset boolfalse 'bar'
>> SELECT true, false;
>> bool | bool
>> ------+------
>> foo | bar
>> (1 row)
>>
>> \pset booltrue 't'
>> \pset boolfalse 'f'
>> SELECT true, false;
>> bool | bool
>> ------+------
>> t | f
>> (1 row)
>>
>> As always, comments welcome.
>
> Why not just do it in the SQL?
>
> SELECT CASE WHEN whatever THEN 'foo' ELSE 'bar' END AS whatever;

I understand this motivation - although I was more happy with server
side solution.

Regards

Pavel Stehule

>
> --
> Robert Haas
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