Hello,
for ODBC connection to postgres you need to get installed ODBC driver for postgres;i am using PostgresSQL Unicode(x64).
After that you have 2 options:
1) create user DSN via ODBC data source administrator (C:\Windows\System32\odbcad32.exe). In that case the connection string for ODBC data source is "dsn=dsn_name" where dsn_name represents the user dsn created via tool above
2) alternative option for connection string is: driver={PostgreSQL Unicode(x64)};server=server_name;port=5432;database=db_name
where server_name represents a server name or its IP, db_name is name of database.
For using on-premise gateway you need to use ODBC connection to postgress on power bi desktop. Then you need to configure data sources using ODBC the same way on on-premise gateway.
I am using above approach for connection to multiple different postgres databases.
I hope it helps.
Kind regards
M
