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.greenwood@gmail.com
> www.greenwoodmap.com
>
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