Re: Improving psql slash usage help message

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Hamid Akhtar <hamid(dot)akhtar(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Improving psql slash usage help message
Date: 2020-04-25 20:03:30
Message-ID: CAKFQuwac8=p_MQg74sHUecyLHqB0u2+Sf7g1J2qDuob+dBrKOQ@mail.gmail.com
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On Sat, Apr 25, 2020 at 12:29 PM Hamid Akhtar <hamid(dot)akhtar(at)gmail(dot)com>
wrote:

>
> "\dE" displays the list with a "List of relations" heading whereas "\det"
> displays "List of foreign tables". So, to differentiate the two, I suggest
> to change the help message for "\dE" to:
>
> \dE[S+] [PATTERN] list foreign relations
>
> One could argue that both essentially mean the same thing, however,
> considering "\dE+" also outputs size, it makes sense IMHO to make this
> change (as PG documentation: relation is essentially a mathematical term
> for table). Attached is the patch that makes this change.
>

help.c and the documentation need to be synchronized a bit more than this
single issue.

Calling it "foreign relation" for \dE and "foreign table" for \det does
convey that there is a difference - not sure it a huge improvement though.
The "\d[Eimstv]" family of meta-commands should, in the help, probably be
moved together to show the fact that they are basically "list relation
names [of this type only]" while "\det" is "list foreign table info".

David J.

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