psql create database with user and password code example

Example 1: create db user postgres

sudo -u postgres psql
postgres=# create database mydb;
postgres=# create user myuser with encrypted password 'mypass';
postgres=# grant all privileges on database mydb to myuser;

Example 2: create password for user in postgres

ALTER USER davide WITH PASSWORD 'hu8jmn3';

Example 3: create user and password postgres

dropuser username