From: Leif B. Kristensen <leif@solumslekt.org>
To: pgsql-sql@postgresql.org
Subject: Re: Concatenation through SQL
Date: Fri, 21 Dec 2007 12:16:45 +0100
Message-ID: <200712211216.45186.leif@solumslekt.org> (raw)
In-Reply-To: <6C0CF58A187DA5479245E0830AF84F42337F97@poweredge.attiksystem.ch>
References: <6C0CF58A187DA5479245E0830AF84F42337F97@poweredge.attiksystem.ch>
On Friday 21. December 2007, Philippe Lang wrote:
>(SELECT CONCAT(name, ', ') FROM employees AS e where e.appointment_id
> = appointments.id) AS employees
>FROM appointments
>------------------------------
>
>... where CONCAT suggest we want to concatenate the variable inside,
>with the separator ', ' inbetween.
I've got a similar problem. My persons table has a number of fields for
different name parts: given, patronym, toponym, surname, occupation,
epithet. I've written a Plpgsql function that concatenates the full
name, but it's big and ugly. I'd like something more elegant, like the
Python or PHP join() function. I tried Andreas' suggestion like this:
pgslekt=> select array_to_string(array(select given, patronym, toponym
from persons where person_id=57), ' ');
ERROR: subquery must return only one column
Is there any way to accomplish this from Plpgsql?
--
Leif Biberg Kristensen | Registered Linux User #338009
http://solumslekt.org/ | Cruising with Gentoo/KDE
My Jazz Jukebox: http://www.last.fm/user/leifbk/
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To: pgsql-sql@postgresql.org
Cc: leif@solumslekt.org
Subject: Re: Concatenation through SQL
In-Reply-To: <200712211216.45186.leif@solumslekt.org>
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