To: Chander Ganesan <chander.ganesan@gmail.com>
cc: pgsql-admin@postgresql.org
Subject: Re: Extension prevents dumping table? 
In-reply-to: <4FAAA41E.8080501@gmail.com> 
References: <4FAAA41E.8080501@gmail.com>
Comments: In-reply-to Chander Ganesan <chander.ganesan@gmail.com>
	message dated "Wed, 09 May 2012 13:06:38 -0400"
Date: Wed, 09 May 2012 13:41:13 -0400
Message-ID: <24705.1336585273@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>

Chander Ganesan <chander.ganesan@gmail.com> writes:
> With PostGIS 2.0 if I load/install postgis using the command:
> create extension postgis schema postgis;

> And then use the command:

> pg_dump -t postgis.spatial_ref_sys dbname > spatial_ref_sys.sql

> I get an output that contains a few "set" statements, but no table 
> definition or data from the table.

> However, if I install the PostGIS components the "old" way (not using 
> the extension loader), the pg_dump of the table works just fine.

> Any ideas how to fix this or why this happens?

I don't think there is anything to "fix".  If the table is part of the
extension then it should not get dumped separately.  I don't know enough
about PostGIS to know if there's a valid reason to want to dump that
table by itself, but if you think there is, you should take it up with
the PostGIS authors; there may be a need to adjust the way PostGIS is
packaged into an extension.

			regards, tom lane