How do you change a user in PostgreSQL?

Question

postgres=# \du
                         List of roles
Role name |                   Attributes                   | Member of 

-----------+------------------------------------------------+-----------
 postgres  | Superuser, Create role, Create DB, Replication | {}
 shorturl  | Superuser                                      | {}

postgres=# create database shorturl;
CREATE DATABASE

postgres=# \c shorturl;
You are now connected to database "shorturl" as user "postgres".

shorturl=# 

My preference was to use database shorturl being the user shorturl and not postgres. How do I change the same?

Thanks in advance.

Answer 1

When you display the psql online help by entering \? you can see:

Connection
  \c[onnect] {[DBNAME|- USER|- HOST|- PORT|-] | conninfo}
                         connect to new database (currently "postgres")

So you need to use:

\c shorturl shorturl

Answer 2

Another option, if you're already connected to database shorturl, is the command:

SET ROLE shorturl;

The benefits of that command are that it's not tied to psql, and that you can change user "midstream" of your work.