Postgres Pro
Downloads
Home   >   mailing lists

Re: Not all functions in schema pg_catalog are "visible" - Mailing list pgsql-general

From Alvaro Herrera
Subject Re: Not all functions in schema pg_catalog are "visible"
Date
Msg-id 20100309193106.GB3280@alvh.no-ip.org
Whole thread Raw
In response to Not all functions in schema pg_catalog are "visible"  (Thomas Kellerer <spam_eater@gmx.net>)
List pgsql-general
Tree view 
Thomas Kellerer wrote:
> Hi,
>
> I just noticed that that there are functions defined (such as pg_catalog.time(timestamp) that can only be called when
prefixedwith pg_catalog. However other functions (that are at first glance defined identically to time()) can be called
withoutprefixing them with pg_catalog. 

I think it's not that they are visible but rather that their names are
keywords.  So you could also call them by quoting them, e.g.
"time"(timestamp).  IIRC there's a view listing all keywords you can use
to figure this out.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

pgsql-general by date:

Previous
From: Adrian Klaver
Date:
Subject: Re: \copy command: how to define a tab character as the delimiter
Next
From: Ben Chobot
Date:
Subject: Re: obsessive-compulsive vacuum behavior