title: Is it possible to use an instance name instead of a port number in PostgreSQL?
body: <p>I am migrating from SQL Server to PostgreSQL. I found out that in PostgreSQL you have ports which allow you to connect to your server. I guess this port is equivalent to SQL Server instance (e.g. MSSQLSERVER), but in SQL Server you can choose any instance name you want, unlike PostgreSQL which uses only port numbers.</p>
  <p>Can I use instance names or something similar for PostgreSQL instead of port numbers?</p>