Power BI Service and Google Cloud SQL

Yes, you can establish a direct connection between Power BI Service and your PostgreSQL database hosted on Google Cloud SQL, but there are some important considerations:

Direct Query to PostgreSQL

1. Direct Connection via On-Premises Data Gateway:

   • While Power BI Service can connect to PostgreSQL, it typically requires the use of an On-Premises Data Gateway for data refreshes and live connections. This is because the connection is often routed through the gateway for security and management reasons.
   • If you're looking to avoid a gateway, you might need to rely on the data being available in a service that Power BI can connect to directly, like a cloud-based SQL database supported natively by Power BI.

2. Cloud-based Connections:

   • Power BI Premium: With Power BI Premium, you have the option to connect to PostgreSQL directly using a DirectQuery connection if your PostgreSQL instance is accessible over the internet and is not behind a firewall that would prevent Power BI from reaching it. Ensure that your PostgreSQL instance has public IP access and that appropriate firewall rules are in place to allow Power BI's IP addresses.
   • Public IP and Firewalls: Make sure your PostgreSQL instance has a public IP address and that the necessary firewall rules are configured to allow traffic from Power BI's IP ranges. You'll need to allow incoming connections from Power BI's service IP ranges, which can be found in Microsoft's documentation.

3. Steps to Connect:

   • Set Up the Connection:
     1. In Power BI Desktop: Go to Home > Get Data > More > Database > PostgreSQL. Enter your PostgreSQL server details, database name, and credentials.
     2. Configure DirectQuery: When setting up the connection, choose the DirectQuery option if you want real-time querying of your PostgreSQL database.
   • Publish to Power BI Service:
     • Publish your Power BI Desktop report to Power BI Service.
     • In Power BI Service, go to your dataset settings and ensure that the dataset is set up to use DirectQuery mode.

4. Firewall and Security Considerations:

   • Security: Ensure that any data transmitted between Power BI and PostgreSQL is encrypted and that your PostgreSQL instance is securely configured.
   • Network Configuration: Configure your PostgreSQL instance to allow connections from Power BI Service. This may involve updating firewall rules or network configurations to permit the necessary traffic.