Re: Function parameter

----- Original Message -----
From: "John DeSoi" <desoi@pgedit.com>
To: "Nico Callewaert" <callewaert.nico@telenet.be>
Cc: <pgsql-general@postgresql.org>
Sent: Wednesday, February 25, 2009 1:52 AM
Subject: Re: [GENERAL] Function parameter


>
> On Feb 24, 2009, at 5:10 PM, Nico Callewaert wrote:
>
>> I'm trying to modify an input parameter of a function, but I receive
>> following error :
>>
>> ERROR:  "$17" is declared CONSTANT
>> CONTEXT:  compile of PL/pgSQL function "update_jobreg" near line 26
>>
>> Is there a way to modify an input parameter or I have to declare a  local
>> variable and assign that input parameter to it ?
>
> Declaring a local variable is the best way to do it. You can modify a
> parameter if you declare it as INOUT, but you generally only want to  do
> that if you want to return something from the function.
>
> Note that you can declare and assign the value in a single line in the
> DECLARE section of the function, e.g.
>
> text_var text := text_param;
>


Hi !

Thank you for the explanation.  I was not warae of the fact that you could
declare and assign a variable in 1 line.

Thanks, best regards, Nico