From: | "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org> |
---|---|
To: | George Weaver <gweaver(at)shaw(dot)ca> |
Cc: | "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: PL/PgSQL - returning multiple columns ... |
Date: | 2005-02-03 16:48:11 |
Message-ID: | 20050203124751.C62562@ganymede.hub.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
Perfect, worked like a charm ... but the RETURNS still needs to be a
SETOF, other then that, I'm 'away to the races' ... thanks :)
On Wed, 2 Feb 2005, George Weaver wrote:
> Hi Marc,
>
> One option is to create a simple data type and return the rowtype of the
> datatype
>
> eg CREATE TYPE tserverload AS ("server_name" text, "load_avg" int4);
>
> CREATE FUNCTION getserverload()
>
> RETURNS tserverload
>
> AS
>
> 'DECLARE
>
> r tserverload%rowtype;
>
> etc.
>
> You would then return r, comprised of r.server_name and r.load_avg.
>
> George
>
>
>
> ----- Original Message ----- From: "Marc G. Fournier"
> <scrappy(at)postgresql(dot)org>
> To: <pgsql-sql(at)postgresql(dot)org>
> Sent: Wednesday, February 02, 2005 3:10 PM
> Subject: [SQL] PL/PgSQL - returning multiple columns ...
>
>
>>
>> I have a function that I want to return 'server_name, avg(load_avg)' ... if
>> I wanted to return matching rows in a table, I can do a 'setof <table>',
>> with a for loop inside ... but what do I set the 'RETURNS' to if I want to
>> return the results of query that returns only two fields of a table, or, in
>> the case of the above, one column and oen 'group by' column?
>>
>> thanks ...
>>
>>
>> ----
>> Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
>> Email: scrappy(at)hub(dot)org Yahoo!: yscrappy ICQ: 7615664
>>
>> ---------------------------(end of broadcast)---------------------------
>> TIP 9: the planner will ignore your desire to choose an index scan if your
>> joining column's datatypes do not match
>>
>
>
>
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy(at)hub(dot)org Yahoo!: yscrappy ICQ: 7615664
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