Обсуждение: Problem with date calculation

Hi,

I'm a newbie to Postgresql and have a problem manipulating dates in a
function...

In fact, I want a function to add some days to the current date and return
the result date.

My code would be something like :

/***************************************************************************
*********/
CREATE OR REPLACE FUNCTION AddDay( int ) RETURNS timestamp AS '

DECLARE
_INTdays ALIAS FOR $1;

_DTcurrent timestamp;

BEGIN

_DTcurrent := NOW() + interval ''_INTdays days'';
RETURN _DTcurrent;

END'
LANGUAGE 'plpgsql';
/***************************************************************************
*********/

I know there is an error in the date calculation but don't know how to
calculate it....

Thanks for your help.

Patrick Fiche



Patrick Fiche
email : patrick.fiche@aqsacom.com
tél : 01 69 29 36 18

On Mon, 26 Aug 2002, Patrick FICHE wrote:

> Hi,
>
> I'm a newbie to Postgresql and have a problem manipulating dates in a
> function...
>
> In fact, I want a function to add some days to the current date and return
> the result date.
>
> My code would be something like :
>
> _DTcurrent := NOW() + interval ''_INTdays days'';

I think,
_DTcurrent := NOW() + CAST( _INTdays || '' days'' as interval);

will work.

Thanks a lot, it worked...

-----Original Message-----
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org]On Behalf Of Stephan Szabo
Sent: Monday, August 26, 2002 5:37 PM
To: Patrick FICHE
Cc: PostgreSQL - General (E-mail)
Subject: Re: [GENERAL] Problem with date calculation


On Mon, 26 Aug 2002, Patrick FICHE wrote:

> Hi,
>
> I'm a newbie to Postgresql and have a problem manipulating dates in a
> function...
>
> In fact, I want a function to add some days to the current date and return
> the result date.
>
> My code would be something like :
>
> _DTcurrent := NOW() + interval ''_INTdays days'';

I think,
_DTcurrent := NOW() + CAST( _INTdays || '' days'' as interval);

will work.


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