Re: returning a record from a function?

From: Roberto Mello <rmello(at)cc(dot)usu(dot)edu>
To: Jon Obuchowski <jon_obuchowski(at)terc(dot)edu>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: returning a record from a function?
Date: 2002-02-25 14:59:57
Message-ID: 20020225145957.GC24707@cc.usu.edu
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On Sun, Feb 24, 2002 at 10:33:40PM -0500, Jon Obuchowski wrote:
>
> My attempts to do so look like the following code (with table "foo"):
>
> CREATE FUNCTION get_newest_foo ()
> RETURNS foo AS '
> SELECT *
> FROM foo
> WHERE foo_id =
> (select MAX(foo_id) FROM foo);
> ' LANGUAGE 'sql';

In the case above, wouldn't it be better if implemented as a VIEW?

CREATE VIEW newest_foo AS
SELECT *
FROM foo
WHERE foo_id =
(select MAX(foo_id) FROM foo);

SELECT * FROM newest_foo;

> Any help with this is appreciated; if I am simply overlooking relevant
> documentation I'd appreciate being pointed towards the relevant page.

I think you're looking for the "setof" return type for SQL functions? See
the CREATE FUNCTION reference.

Also, I just sent a reply about returning rows from non-SQL functions that
you might be interested in.

-Roberto

--
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Roberto Mello - Computer Science, USU - http://www.brasileiro.net/
http://www.sdl.usu.edu/ - Space Dynamics Lab, Developer
*/ \* <- Tribbles having a swordfight

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