Re: coalesce

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От Bruce Momjian
Тема Re: coalesce
Дата
Msg-id 201110050104.p95143V02802@momjian.us
обсуждение исходный текст
Ответ на Re: coalesce  (Alvaro Herrera <alvherre@commandprompt.com>)
Список pgsql-docs
Alvaro Herrera wrote:
>
> Excerpts from Henry Drexler's message of mié sep 21 12:50:18 -0300 2011:
> > thanks,
> >
> > so I take it I am not getting those more complex examples (that are
> > apparently beyond my use case), I will take a look at them again.
>
> Maybe the fix is just to add a simpler example, without altering the
> wording (which seems pretty clear to me as well, but then I already know
> what COALESCE does).

The current example is:

    SELECT COALESCE(description, short_description, '(none)') ...

What would a simpler one look like?

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

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