Thread: How to list current user and database in PSQL

How to list current user and database in PSQL

From
peterlen
Date:
After logging into the PSQL Shell Script as a particular user and database, I
want to display who my current user is and what database I am in as I may
have forgotten who I am logged in as in order to make sure any commands are
going to the right place.  In Oracle's SQLPlus you can do something like
"show user" and get feedback on the user you are logged in as.  Is there an
equivalent thing for PSQL to list the user and database?

Thanks - Peter



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Re: How to list current user and database in PSQL

From
Adrian Klaver
Date:
On 12/31/2013 10:55 AM, peterlen wrote:
> After logging into the PSQL Shell Script as a particular user and database, I
> want to display who my current user is and what database I am in as I may
> have forgotten who I am logged in as in order to make sure any commands are
> going to the right place.  In Oracle's SQLPlus you can do something like
> "show user" and get feedback on the user you are logged in as.  Is there an
> equivalent thing for PSQL to list the user and database?


test=> select current_user;
  current_user
--------------
  aklaver
(1 row)

test=> select current_database();
  current_database
------------------
  test

Or you can change the psql prompt to display the information:

http://www.postgresql.org/docs/9.3/interactive/app-psql.html

Search for:

"Prompting"

Details the variables available

"Files"

Explains how to persist this information in a psqlrc file.

>
> Thanks - Peter
>
>
>
> --
> View this message in context:
http://postgresql.1045698.n5.nabble.com/How-to-list-current-user-and-database-in-PSQL-tp5784928.html
> Sent from the PostgreSQL - general mailing list archive at Nabble.com.
>
>


--
Adrian Klaver
adrian.klaver@gmail.com


Re: How to list current user and database in PSQL

From
Bosco Rama
Date:
On 12/31/13 10:55, peterlen wrote:
> After logging into the PSQL Shell Script as a particular user and database, I
> want to display who my current user is and what database I am in as I may
> have forgotten who I am logged in as in order to make sure any commands are
> going to the right place.  In Oracle's SQLPlus you can do something like
> "show user" and get feedback on the user you are logged in as.  Is there an
> equivalent thing for PSQL to list the user and database?

Use the connect meta without arguments, i.e.

xyz> \c
You are now connected to database "xyz" as user "demo".

or for something 'show' based:

xyz> show session authorization;
 session_authorization
-----------------------
 demo
(1 row)

HTH,
Bosco.


Re: How to list current user and database in PSQL

From
Bosco Rama
Date:
On 12/31/13 11:06, Bosco Rama wrote:
>
> Use the connect meta without arguments, i.e.
>
> xyz> \c
> You are now connected to database "xyz" as user "demo".

Hmmm.  Scratch that.  That actually does a reconnect.  Probably not
what you want, especially is you are in the middle of a transaction. :-(

Bosco.


Re: How to list current user and database in PSQL

From
peterlen
Date:
Excellent.  That works.  Many thanks!



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Re: How to list current user and database in PSQL

From
bricklen
Date:

On Tue, Dec 31, 2013 at 10:55 AM, peterlen <peteralen@earthlink.net> wrote:
After logging into the PSQL Shell Script as a particular user and database, I
want to display who my current user is and what database I am in as I may
have forgotten who I am logged in as in order to make sure any commands are
going to the right place.  In Oracle's SQLPlus you can do something like
"show user" and get feedback on the user you are logged in as.  Is there an
equivalent thing for PSQL to list the user and database?

Thanks - Peter

As Adrian Klaver mentioned, you can set your psql prompt. Here are few entries from my $HOME/.psqlrc

\set PROMPT1 '%n@%`hostname`:%> [%/] %x%# '
\timing on
\pset pager off
\x auto
\set HISTCONTROL = ignoreboth