create user and db under postgresql code example

Example 1: How do I add a user to a postgres database? cli

GRANT ALL PRIVILEGES ON DATABASE yourdbname TO youruser;

Example 2: create and attach user to a postgresql database

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