From: | darren(at)ontrenet(dot)com |
---|---|
To: | "Richard Greenwood" <richard(dot)greenwood(at)gmail(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: not quite a cross tab query... |
Date: | 2009-03-05 19:27:15 |
Message-ID: | 57959.38.104.58.186.1236281235.squirrel@webmail11.pair.com |
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Thread: | |
Lists: | pgsql-general |
Have you tried using "group by"?
> Hello pgsql listers,
>
> I've got a problem that is similar to, but I don't think identical to,
> a cross tab query. My data looks like:
> ID | CAT
> 1 | A
> 1 | B
> 2 | A
> 2 | C
> So for each ID there may be many CAT (categories).
> The client wants it to look like:
> ID | CATS
> 1 | A,B
> 2 | A,C
> Where each ID is unique in the results, and the CAT values are
> concatenated with a comma separator.
>
> There are about 100 unique CAT values. They only way I can see to do
> it is programatically with a for loop. But before I do that I wanted
> to bounce it off the fine minds that inhabit this list.
>
> Thanks,
> Rich
>
> --
> Richard Greenwood
> richard(dot)greenwood(at)gmail(dot)com
> www.greenwoodmap.com
>
> --
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