Re: array iteration and zeros

How about when there are zeros in the array? Test for
NULL or something?

CSN


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

On Mon, 17 Nov 2003, Julie May wrote:

> Is it possible to use an array as a parameter to a
pl/pgsql function. I am
> running version 7.3 and don't have the time right
now to upgrade.If it is
> possible, how do you iterate through the array? For
example:


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)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Date: Sat, 22 Nov 2003 13:03:02 -0800
From: Ben <bench@silentmedia.com>
To: pgsql-general@postgresql.org
Subject: Re: array iteration?
Message-ID: <1069534981.1639.368.camel@purple>

Yep.

http://archives.postgresql.org/pgsql-general/2003-11/msg00852.php

On Sat, 2003-11-22 at 12:44, CSN wrote:
> Is it possible to iterate over an array in plpgsql?
> Something like:
>
> function insert_stuff (rel_ids int[])
> ...
>
> foreach rel_ids as id
>   insert into table (rel_id, val)
>   values (id, 5);
>

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