Обсуждение: help..postgresql mulyiple return values

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On 5/12/06, Michael Joseph Tan <josephtan2k@yahoo.com> wrote:
>
> hi,
> im new in postgresql, generally new in databases.
>
> im trying to make a function using PGAdminIII which returns several types,
> example, my query is:
>
> "select count(id) as requests, organization from connection_requests group
> by organization"
>
> id is of type int8, organization is of type varchar(50).
>
> basically the query would return coun(id), and a varchar(50) which is
> organization.
>
> i really dont know what to put on the return type.
>
> what would be the best solution?


If you are in 8.1 you can follow this example from the documentation.
http://www.postgresql.org/docs/8.1/interactive/plpgsql-declarations.html

CREATE FUNCTION sum_n_product(x int, y int, OUT sum int, OUT prod int) AS $$
BEGIN   sum := x + y;   prod := x * y;
END;
$$ LANGUAGE plpgsql;

Then run it like:

SELECT sum, prod FROM sum_n_product(1,2);