Re: append columns that are null

From: Gerwin Philippo <gerwin(at)vernet(dot)nl>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: append columns that are null
Date: 2004-07-08 07:26:15
Message-ID: 40ecf718$0$36169$e4fe514c@news.xs4all.nl
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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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