Re: passing array as argument and returning an array in

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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