Re: A table of magic constants

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От Raymond O'Donnell
Тема Re: A table of magic constants
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Msg-id 55A16CB9.50807@iol.ie
обсуждение исходный текст
Ответ на A table of magic constants  (Dane Foster <studdugie@gmail.com>)
Ответы Re: A table of magic constants  (Adrian Klaver <adrian.klaver@aklaver.com>)
Список pgsql-general
On 11/07/2015 20:07, Dane Foster wrote:

<snip>

> As a recent convert to the Church of Postgres I've been consuming vast

Welcome to the One True Faith! :-)

> amounts of information on PostgreSQL, and SESSION_USER is not the first
> nor only, what I'm calling magic constant, that I've seen. Off the top
> of my head, other examples that I've encountered are CURRENT_USER and
> CURRENT_TIMESTAMP.
>
> So my question is this, is there a reference table in the documentation
> that I haven't found yet that lists all magic constants and their
> meaning? And if not in the official documentation is it in the wiki?

session_user, current_timestamp and current_user are all functions, not
magic constants:

  http://www.postgresql.org/docs/9.4/static/functions-datetime.html
  http://www.postgresql.org/docs/9.4/static/functions-info.html

I hope this helps,

Ray.

--
Raymond O'Donnell :: Galway :: Ireland
rod@iol.ie


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