Re: passing array as argument and returning an array in - Mailing list pgsql-general

I got this when I was searching for something else.  I will forward this
to you.
http://archives.postgresql.org/pgsql-general/2003-11/msg00852.php
CREATE or REPLACE FUNCTION foo(integer[]) RETURNS int AS
'DECLARE
        a alias for $1;
        index   integer := 1;
        total   integer := 0;
BEGIN
        WHILE a[index] > 0
        LOOP
                total := total + a[index];
                index := index + 1;
        END LOOP;

        RETURN total;
        END;
' LANGUAGE 'plpgsql';



test=> select foo('{1,2}');
 foo
-----
   3
(1 row)
On Tue, 2003-12-16 at 03:25, K. Deepa wrote:
> Hi all,
>        I am using postgresql7.4. How to handle arrays in plpgsql. How can
> I pass an array. Is it possible to retrieve values from an array by
> indexing it like
>
> argument : '{1,2,3}'
> Return value : varchar array
>
> Variables :
> ---------
>
> a alias for $1
> b _varchar
>
> Usage :
> -----
>
> b[1] = a[1];
> b[2] = a[2];
>
> return b;
>
> Is it possible.
>
> TIA,
--
Jenny Zhang
Open Source Development Lab
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(503)626-2455 ext 31