From: Guillaume Lelarge <guillaume@lelarge.info>
To: Bruce Momjian <bruce@momjian.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Neil Conway <neilc@samurai.com>
Cc: pgsql-docs@postgresql.org
Subject: Re: Two fixes for plpgsql.sgml
Date: Wed, 28 Nov 2007 23:42:16 +0100
Message-ID: <474DEEC8.80502@lelarge.info> (raw)
In-Reply-To: <200711282147.lASLlxR10356@momjian.us>
References: <200711282147.lASLlxR10356@momjian.us>
Bruce Momjian a écrit :
> Alvaro Herrera wrote:
>>[...]
>> The point of "any datatype they can return a single instance of" is that
>> this can be a set of scalar values (e.g. "RETURNS SETOF int") or of a
>> complex type ("RETURNS SETOF table"), or anything else they can return a
>> single instance of :-P (SETOF anyelement? SETOF table%TYPE?)
>
> Good idea, updated:
>
> <application>PL/pgSQL</> functions can also be declared to return
> a <quote>set</> (or table) of any data type that can be returned as
> a single instance. Such a function generates its output by executing
> <command>RETURN NEXT</> for each desired element of the result
> set, or by using <command>RETURN QUERY</> to output the result of
> evaluating a query.
>
Great. Now I better understand this part. Thank you all.
--
Guillaume.
http://www.postgresqlfr.orghttp://dalibo.com
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To: pgsql-docs@postgresql.org
Cc: guillaume@lelarge.info, bruce@momjian.us, alvherre@alvh.no-ip.org, tgl@sss.pgh.pa.us, neilc@samurai.com
Subject: Re: Two fixes for plpgsql.sgml
In-Reply-To: <474DEEC8.80502@lelarge.info>
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