Re: patch: psql - enforce constant width of last column

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: Ahsan Hadi <ahsan(dot)hadi(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: patch: psql - enforce constant width of last column
Date: 2019-09-17 15:15:42
Message-ID: CAFj8pRB+5prxjXyPKMbPPzGwk87ziCewB+ijeJT+3HLPp3xWsw@mail.gmail.com
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út 17. 9. 2019 v 17:06 odesílatel Ahsan Hadi <ahsan(dot)hadi(at)gmail(dot)com> napsal:

> Hi Pavel,
>
> I have been trying to reproduce the case of badly displaying last columns
> of a query result-set. I played around with the legal values for psql
> border variable but not able to find a case where last columns are badly
> displayed. Can you please share an example that I can use to reproduce this
> problem. I will try out your patch once I am able to reproduce the problem.
>

you need to use pspg, and vertical cursor.

https://github.com/okbob/pspg
vertical cursor should be active

\pset border 1
\pset linestyle ascii
\pset pager always

select * from generate_series(1,3);

Regards

Pavel

> Thanks,
>
> -- Ahsan
>
>
> On Mon, Sep 9, 2019 at 2:32 PM Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
> wrote:
>
>> Hi
>>
>> When I played with vertical cursor support I got badly displayed last
>> columns when border was not 2. Only when border is 2, then psql displays
>> last column with same width for each row.
>>
>> I think so we can force column width alignment for any border styles
>> today (for alignment and wrapping styles) or as minimum this behave can be
>> optional.
>>
>> I wrote a patch with pset option "final_spaces", but I don't see a reason
>> why we trim rows today.
>>
>> Regards
>>
>> Pavel
>>
>

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