Re: append columns that are null

From: "nobody" <nobody(at)nowhere(dot)near(dot)here>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: append columns that are null
Date: 2004-07-08 08:53:41
Message-ID: ccj224$1jq7$1@news.hub.org
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You are welcome. Only if all problems were that simple ;-)...
"Gerwin Philippo" <gerwin(at)vernet(dot)nl> wrote in message
news:40ecf718$0$36169$e4fe514c(at)news(dot)xs4all(dot)nl(dot)(dot)(dot)
> THX! didn't know that one yet :)
>
> nobody wrote:
> > "Gerwin Philippo" <gerwin(at)vernet(dot)nl> wrote in message
> > news:40ec1043$0$559$e4fe514c(at)news(dot)xs4all(dot)nl(dot)(dot)(dot)
> >
> >>I have function that appends 2 columns, like
> >>"new.field1 = new.field2||new.field3",
> >>but when field 3 is null, then the entire outcome is null, while I
> >>expected just field2, since when I append nothing to field2, I get
> >>field2, right?
> >>Is this standard behaviour, and if so, is there another append function
> >>that I can use that doesn't behave like this?
> >
> >
> > COALESCE is your friend...
> >
> >

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