Re: aggregate functions only for numbers?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: davidgn(at)servidor(dot)unam(dot)mx
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: aggregate functions only for numbers?
Date: 2002-02-08 05:11:01
Message-ID: 21535.1013145061@sss.pgh.pa.us
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David Eduardo Gomez Noguera <davidgn(at)servidor(dot)unam(dot)mx> writes:
> I wanted to make a query of name,birth date and phones, and have them
> grouped by name (so the name appeared only once) to get something like

You could probably do what you want with a custom aggregate. This is
discussed in the mail list archives, and I think there is an article
about it on techdocs.postgresql.org.

regards, tom lane

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