Обсуждение: Query a list of tables

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Query a list of tables

От
"Campbell, Lance"
Дата:

What is the SQL to do the following:

 

1)      Return a list of all possible SCHEMA names within a database.

2)      For a given SCHEMA return the list of all table names.

 

Thanks,

 

Lance Campbell

Project Manager/Software Architect

Web Services at Public Affairs

University of Illinois

217.333.0382

http://webservices.uiuc.edu

 

Re: Query a list of tables

От
"Scott Marlowe"
Дата:
On Wed, Jul 23, 2008 at 8:56 AM, Campbell, Lance <lance@illinois.edu> wrote:
> What is the SQL to do the following:
>
>
>
> 1)      Return a list of all possible SCHEMA names within a database.
>
> 2)      For a given SCHEMA return the list of all table names.

You can either do it with the INFORMATION_SCHEMA, or the system
catalogs.  To see how to do it with the system catalogs, then start
psql with the -E switch and issue \dn and set search_path='schemaname'
and \d

Re: Query a list of tables

От
"Gibson Chimhamhiwa"
Дата:
Hi All,

I have a postgreSQl database and just wan to know how I can get to its data dictionary.


Re: Query a list of tables

От
"Campbell, Lance"
Дата:
Is there a list somewhere of the system catalog tables and examples of
querying it for administrative reasons?

-----Original Message-----
From: Scott Marlowe [mailto:scott.marlowe@gmail.com]
Sent: Wednesday, July 23, 2008 10:02 AM
To: Campbell, Lance
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Query a list of tables

On Wed, Jul 23, 2008 at 8:56 AM, Campbell, Lance <lance@illinois.edu>
wrote:
> What is the SQL to do the following:
>
>
>
> 1)      Return a list of all possible SCHEMA names within a database.
>
> 2)      For a given SCHEMA return the list of all table names.

You can either do it with the INFORMATION_SCHEMA, or the system
catalogs.  To see how to do it with the system catalogs, then start
psql with the -E switch and issue \dn and set search_path='schemaname'
and \d

Re: Query a list of tables

От
"Gibson Chimhamhiwa"
Дата:

Hi,

Under Schema I have;

information_schema
pg_catalog
pg_toast
pg_toast_temp_1
pg_temp_1

and then public which contains the tables with data for my database.

On Wed, Jul 23, 2008 at 5:11 PM, Campbell, Lance <lance@illinois.edu> wrote:
Is there a list somewhere of the system catalog tables and examples of
querying it for administrative reasons?

-----Original Message-----
From: Scott Marlowe [mailto:scott.marlowe@gmail.com]
Sent: Wednesday, July 23, 2008 10:02 AM
To: Campbell, Lance
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Query a list of tables

On Wed, Jul 23, 2008 at 8:56 AM, Campbell, Lance <lance@illinois.edu>
wrote:
> What is the SQL to do the following:
>
>
>
> 1)      Return a list of all possible SCHEMA names within a database.
>
> 2)      For a given SCHEMA return the list of all table names.

You can either do it with the INFORMATION_SCHEMA, or the system
catalogs.  To see how to do it with the system catalogs, then start
psql with the -E switch and issue \dn and set search_path='schemaname'
and \d

--
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin



--
Gibson Chimhamhiwa
CSIR - Meraka Institute
P O Box 395, Pretoria 0001
South Africa
www.csir.co.za / www.meraka.org.za
Office: +27 12 841 2758
Mobile: +27 78 447 2879
Fax: +27 12 841 4720
E-mail:gchimhamhiwa@gmail.co.za

Re: Query a list of tables

От
"Milen A. Radev"
Дата:
Campbell, Lance написа:
> Is there a list somewhere of the system catalog tables and examples of
> querying it for administrative reasons?
[...]

http://www.postgresql.org/docs/current/static/information-schema.html
http://www.postgresql.org/docs/current/static/catalogs.html

This mostly means you need to acquaint yourself with the fine manual.


--
Milen A. Radev

Re: Query a list of tables

От
"Campbell, Lance"
Дата:

Solution:

 

I found that by doing the following query you can get a list of all schemas or namespaces:

 

select distinct schemaname from pg_tables where schemaname not in ('information_schema', 'pg_catalog');

 

In order to select all of the tables within a schema or namespace:

 

select tablename from pg_tables where schemaname='name_of_schema';

 

Thanks for the responses.

 

From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Gibson Chimhamhiwa
Sent: Wednesday, July 23, 2008 10:22 AM
To: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Query a list of tables

 


Hi,

Under Schema I have;

information_schema
pg_catalog
pg_toast
pg_toast_temp_1
pg_temp_1

and then public which contains the tables with data for my database.

On Wed, Jul 23, 2008 at 5:11 PM, Campbell, Lance <lance@illinois.edu> wrote:

Is there a list somewhere of the system catalog tables and examples of
querying it for administrative reasons?


-----Original Message-----
From: Scott Marlowe [mailto:scott.marlowe@gmail.com]
Sent: Wednesday, July 23, 2008 10:02 AM
To: Campbell, Lance
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Query a list of tables

On Wed, Jul 23, 2008 at 8:56 AM, Campbell, Lance <lance@illinois.edu>
wrote:
> What is the SQL to do the following:
>
>
>
> 1)      Return a list of all possible SCHEMA names within a database.
>
> 2)      For a given SCHEMA return the list of all table names.

You can either do it with the INFORMATION_SCHEMA, or the system
catalogs.  To see how to do it with the system catalogs, then start
psql with the -E switch and issue \dn and set search_path='schemaname'
and \d

--
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin




--
Gibson Chimhamhiwa
CSIR - Meraka Institute
P O Box 395, Pretoria 0001
South Africa
www.csir.co.za / www.meraka.org.za
Office: +27 12 841 2758
Mobile: +27 78 447 2879
Fax: +27 12 841 4720
E-mail:gchimhamhiwa@gmail.co.za

Re: Query a list of tables

От
"Igor Neyman"
Дата:
First you get to Postgresql docs, from there you get anywhere you want.
 
Igor


From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Gibson Chimhamhiwa
Sent: Wednesday, July 23, 2008 11:10 AM
To: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Query a list of tables

Hi All,

I have a postgreSQl database and just wan to know how I can get to its data dictionary.