PostgreSQL pgAdmin 4 how to create user and password code example

Example 1: create password for user in postgres

ALTER USER davide WITH PASSWORD 'hu8jmn3';

Example 2: postgres create admin user with password

sudo -u postgres createuser -s -i -d -r -l -w <<username>>
sudo -u postgres psql -c "ALTER ROLE <<username>> WITH PASSWORD '<<password>>';"