PostgreSQL Connection URIs

摘自官方文档：

https://www.postgresql.org/docs/9.2/static/libpq-connect.html

The general form for a connection URI is:

postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&...]

The URI scheme designator can be either postgresql:// or postgres://. Each of the URI parts is optional. The following examples illustrate valid URI syntax uses:

postgresql://
postgresql://localhost
postgresql://localhost:5433
postgresql://localhost/mydb
postgresql://user@localhost
postgresql://user:secret@localhost
postgresql://other@localhost/otherdb?connect_timeout=10&application_name=myapp

Components of the hierarchical part of the URI can also be given as parameters. For example:

postgresql:///mydb?host=localhost&port=5433