Cloud SQL Documentation PostgreSQL Documentation Configuring External Masters MySQL | PostgreSQL This functionality is not yet supported for PostgreSQL instances. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated April 18, 2018.