Обсуждение: Re: How to list and remove a user in postgres ?

Fred wrote:
>
> Hi,
>
> I am a newby and i dont understand how to list al the users or delete them ?
>
> 1 do i it from the command line in Linux
> 2 or in the database
>
> i have a user Fred and a user Grades and want delete them.
>

Go onto psql and type \h.  This will bring up topics that
you can access by typing the backslash and the topic name
(\h createuser.)  I don't recall a method for listing all
users.



--

Homer J. Welch        hjwxxx@home.com
Troy, Michigan

On Wed, Jul 12, 2000 at 07:45:50PM +0000, HomerWelch wrote:
> Fred wrote:
> >
> > Hi,
> >
> > I am a newby and i dont understand how to list al the users or delete them ?
> >
> > 1 do i it from the command line in Linux
> > 2 or in the database
> >
> > i have a user Fred and a user Grades and want delete them.
> >
>
> Go onto psql and type \h.  This will bring up topics that
> you can access by typing the backslash and the topic name
> (\h createuser.)  I don't recall a method for listing all
> users.


select * from pg_user;


reedstrm=>\h drop user
Command: drop user
Description: remove a user from the system
Syntax:
        DROP USER user_name;


HTH,
Ross
--
Ross J. Reedstrom, Ph.D., <reedstrm@rice.edu>
NSBRI Research Scientist/Programmer
Computer and Information Technology Institute
Rice University, 6100 S. Main St.,  Houston, TX 77005

HomerWelch <hjwxxx@home.com> writes:

> Fred wrote:
> >
> > Hi,
> >
> > I am a newby and i dont understand how to list al the users or delete them ?
> >
> > 1 do i it from the command line in Linux
> > 2 or in the database
> >
> > i have a user Fred and a user Grades and want delete them.
> >
>
> Go onto psql and type \h.  This will bring up topics that
> you can access by typing the backslash and the topic name
> (\h createuser.)  I don't recall a method for listing all
> users.
>
> --
>
> Homer J. Welch        hjwxxx@home.com
> Troy, Michigan

drop user username;
select usename from pg_user;

--
Prasanth Kumar
kumar1@home.com

HomerWelch <hjwxxx@home.com> wrote:

> (\h createuser.)  I don't recall a method for listing all
> users.

        man psql

has a lot of good information.

Log in as postgres (or whoever is your postgres super user), then run
psql, and:

        \dS

Will give you a list of the system tables (relations).

        \dS pg_user

Will give you the structure of that table, and actually some more help.

        SELECT usename, usesuper from pg_shadow;

Will give you a list of the users that are define, and indicate which one
is the super user.


Yves.
----
Yves Dorfsman                                        dorfsmay@cuug.ab.ca
                                         http://www.cuug.ab.ca/~dorfsmay