Created Dienstag 13 April 2021
A user in PostgreSQL is called a role.
PostgreSQL client
User with LOGIN privileges set
$ createuser -P -U <SQL superuser> <Database username>
SQL
User with LOGIN privileges set
<SQL DB>=# CREATE ROLE <Database username> PASSWORD <Password> LOGIN;
User without any privileges set
<SQL DB>=# CREATE ROLE <Database username> PASSWORD <Password>;