Postgresql – How to change PostgreSQL user password

change-passwordpostgresql

How do I change the password for PostgreSQL user?

To login without a password:

sudo -u user_name psql db_name

To reset the password if you have forgotten:

ALTER USER user_name WITH PASSWORD 'new_password';

Try this (in the psql command-line tool):

\d+ tablename

See the manual for more info.

From the psql command line interface,

First, choose your database

\c database_name

Then, this shows all tables in the current schema:

\dt

Programmatically (or from the psql interface too, of course):

SELECT * FROM pg_catalog.pg_tables;

The system tables live in the pg_catalog database.