Re: Pipelined functions in Postgres

Hi Milen,

Pipelined function is a code that acts like a database table.

Inorder to use this functionality in postgres you would need to write the
function like this

CREATE OR REPLACE FUNCTION get_test_data (numeric)
RETURNS SETOF RECORD AS
$$
DECLARE
temp_rec RECORD;
BEGIN
FOR temp_rec IN (SELECT ename FROM emp WHERE sal > $1)
LOOP
RETURN NEXT temp_rec;
END LOOP;
RETURN;
END;
$$ LANGUAGE plpgsql;

now inorder to call this function you would write the code as follows

SELECT * FROM get_test_data(1000) AS t1 (emp_name VARCHAR);

Regards
Talha Amjad

On 9/19/06, Milen Kulev <makulev(at)gmx(dot)net> wrote:
>
> Hello Lister,
> I am curios whether I can emulate the Oracle pipelined functions
> functionality in PG too (using RETURN NEXT ). For more
> information and examples about Oracle pipelined functions see:
>
> http://asktom.oracle.com/pls/ask/f?p=4950:8:8127757633768425921::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:4447489221109
>
> I have used pipeline functions in DWH enviromnent with success and would
> like
> To use similar concept in PG too.
>
> Any help, examples , links and shared experiences would be greately
> appreciated.
>
> Best Regards.
> Milen
>
>
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