Looker Studio doesn’t support private IP connections to PostgreSQL on Cloud SQL.
Potential Workaround Tested: Enabling a Public IP with Authorized Network Access: This workaround assigns a public IP to PostgreSQL but restricts access to specific IP ranges, including LSP’s range (142.251.74.0/23).
Note: This solution may not be ideal for many customers who prefer not to expose their databases via a public IP, even with restricted access.
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