| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Andreas Joseph Krogh <andreak(at)officenet(dot)no> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Mario Weilguni <mweilguni(at)sime(dot)com> |
| Subject: | Re: bug or feature, || -operator and NULLs |
| Date: | 2006-10-18 13:11:32 |
| Message-ID: | 20061018131132.GP31297@alvh.no-ip.org |
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| Thread: | |
| Lists: | pgsql-hackers |
Andreas Joseph Krogh wrote:
> Why do these discussions always end in academic arguments over whats more
> logical then not? From a *user's* point of view I really would like it to
> treat the NULL operand of || as '', and obviously many other (at least
> Oracle) users tend to agree with me on that.
So coalesce the column to the empty string if that's what you want:
select coalesce(NULL, '') || 'fisk'
will get you 'fisk'.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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