Learn more about using AWS RDS PostgreSQL dblink. Our AWS Support team is here to help you with your questions and concerns.

AWS RDS PostgreSQL dblink | Guide

In Amazon RDS for PostgreSQL, we can use the dblink extension to set up connections to other PostgreSQL databases. This includes databases outside our RDS instance.

In other words, we can query data from remote databases and integrate information from multiple sources.

Let’s take a quick look at how to set up and use the dblink extension in Amazon RDS PostgreSQL:

1. First, we have to enable the dblink extension in Amazon RDS PostgreSQL. So, connect to our RDS PostgreSQL instance and run this SQL command:

   CREATE EXTENSION dblink;
2. Next, make sure we have the required privileges to create extensions in our RDS instance.
3. Then, it is time to create a connection to a remote PostgreSQL database with the dblink function. Here is the syntax:

   SELECT dblink_connect('connection_name', 'host=remote_host user=remote_user dbname=remote_dbname password=remote_password');


   • connection_name: A unique name for the connection.
   • remote_host: The hostname/ IP address of the remote PostgreSQL server.
   • remote_user: The username to connect to the remote PostgreSQL server.
   • remote_dbname: The name of the remote database.
   • remote_password: The password for the remote PostgreSQL user.
4. Now, we can use the dblink function to execute queries on the remote database.
5. Once we are done with the remote database connection, our experts recommend closing it to free up resources: SELECT dblink_disconnect('my_connection');

Furthermore, we have to handle exceptions properly while using dblink. Let us know in the comments if you need additional help.

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Conclusion

In brief, our Support Experts demonstrated how to use AWS RDS PostgreSQL dblink.