The coalesce function can help with nulls. It takes a list of attributes or
literals and returns the first non-null value.
I use it like this:
select coalesce(numeric_attrib, 0) from some_table;
--rob
----- Original Message -----
From: "Bruno Wolff III" <bruno@wolff.to>
To: "postgresql" <pgsql-general@postgresql.org>
Sent: Wednesday, January 24, 2001 7:49 PM
Subject: Re: concatenate 2 numeric columns..
> I saw some similar things when using to_char on columns will null
> values. I used a case statement to check for nulls in 7.0.3. When
> I switched to using 7.1beta3, the problem was fixed.
>
> On Thu, Jan 25, 2001 at 01:42:44AM +0530,
> Anand Raman <araman@india-today.com> wrote:
> > hi guys
> > I wish to concatenate 2 columns of numeric type.. How can it be done..
> >
> >
> > Earlier i tried using the to_char function but it seems to be crashing
> > the backend. Any other option will be greatly appreciated..
> >
> >
> > select to_char(length,'9999D99') || to_char(breadth,'9999D99') from
exhibit_distributions
> >
> > This query seems to be crashing the backend when executed over the
> > table.. However when constrained using a appropriate where clause it
> > works..
> >
> > Any other approach??.
> >
> > Thanx
> > Anand
> >
>
