Hi, in https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING it says that the syntax for a PostgreSQL URI is: postgresql://[user[:password]@][host][:port][,...][/dbname][?param1=value1&...] What I don't understand is the [,...] part, i.e. optionally repeating argument. I know that this is a valid URI: postgresql://user1:pass1@host1:port1,host2:port2/dbname?target_session_attrs=read-write But is the following valid? postgresql://user1:pass1@host1:port1,user2:pass2@host2:port2/dbname?target_session_attrs=read-write i.e. can (or should) the user[:pass] part be repeated, and possibly can even be different, if I provide more than one host:port information? Or is the user[:pass] part definitely a one-time only argument and must not appear a second time? I don't know how to read this repetition [,...] syntax. A repeat syntax usually means providing more parameters like the one immediately before that, which in this case, is the port. I think, it should be more correct this way (note the angle bracket): postgresql://[user[:password]@][host[:port]][,...][/dbname][?param1=value1&...] I tried this with psql but failed miserably, though both user1:pass1 and user2:pass2 exist on both databases. The documentation also claims that any of the parts is optional except the postgresql:// part. This means, specifying a port without a host would be perfectly fine, which IMHO makes no sense. Can someone enlighten me? Is this just a misleading line to me in the documentation? Cheers, Paul
