From: Gerardo Herzig <gherzig@fmed.uba.ar>
To: postgres list <pgsql-sql@postgresql.org>
Subject: its posible to use a 2 column returning function as a subquery?
Date: Fri, 11 Sep 2009 17:16:30 -0300
Message-ID: <4AAAB01E.8070009@fmed.uba.ar> (raw)
Hi All. My poor english doest not allow me to get a better subject.
Here is the thing: I have a function who returns a two column result,
that is is used inside another function, like this
CREATE FUNCTION show_result((some args), OUT shoe varchar, OUT desc
varchar , OUT price numeric)
...
as
$$
select shoe,
(get_desc_and_price(shoe)).desc,
(get_desc_and_price(shoe)).price
from ...
$$ language sql;
This is the only way i get this thing working. According to the timming,
it looks like get_desc_and_price() is being called twice. There is some
syntax for calling get_desc_and_price only once?
As getting the 'description' and the 'price' share most of the logic, it
looks ok to write a single function that does the job.
Thanks!
Gerardo
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To: pgsql-sql@postgresql.org
Cc: gherzig@fmed.uba.ar
Subject: Re: its posible to use a 2 column returning function as a subquery?
In-Reply-To: <4AAAB01E.8070009@fmed.uba.ar>
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