The connection URL `?application_name=` param can't be parsed.

[pylead]

The sqlalchemy connection URL like postgresql://user:pass@127.0.0.1:6666/db?application_name=app can not be parsed correctly because of the regexp:

/^postgres(?:ql)?:\/\/([^:]*):([^@]*)@(.*?):(.*?)\/(.*?)$/'

This leads to an error like:

ERROR: database "db?application_name=app" does not exist

Optional query parameters should be ignored during the connection URL parsing.

See also:

application_name (string)
The application_name can be any string of less than NAMEDATALEN characters (64 characters in a standard build). It is typically set by an application upon connection to the server. The name will be displayed in the pg_stat_activity view and included in CSV log entries. It can also be included in regular log entries via the log_line_prefix parameter. Only printable ASCII characters may be used in the application_name value. Other characters will be replaced with question marks (?).
https://www.postgresql.org/docs/14/runtime-config-logging.html#GUC-APPLICATION-NAME