Re: combine multiple row values in to one row

On Tue, Jul 07, 2009 at 08:40:06AM -0700, David Fetter wrote:
> On Tue, Jul 07, 2009 at 01:59:35AM +0430, Lee Harr wrote:
> >
> > Is there a generic way to do this? An aggregate maybe?
>
> The aggregate is called array_agg() and it's in 8.4. You can then
> wrap array_to_string() around it and get pretty formatting, as in:
>
> SELECT idn, array_to_string(array_agg(code),', ') AS codes FROM tbl;

Oops. That should read:

SELECT
idn,
array_to_string(array_agg(code),', ') AS codes
FROM tbl
GROUP BY idn; /* gotta group by :) */

Cheers,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter
Skype: davidfetter XMPP: david(dot)fetter(at)gmail(dot)com

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