From: nobody <nobody@nowhere.near.here>
To: pgsql-sql@postgresql.org
Subject: Re: append columns that are null
Date: Wed, 7 Jul 2004 16:25:32 +0100
Message-ID: <cch4kt$1i5s$1@news.hub.org> (raw)
References: <40ec1043$0$559$e4fe514c@news.xs4all.nl>
"Gerwin Philippo" <gerwin@vernet.nl> wrote in message
news:40ec1043$0$559$e4fe514c@news.xs4all.nl...
> 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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Subject: Re: append columns that are null
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