How do I create a connection to my MySQL database using Lakehouse Federation in Databricks?
To create a connection to your MySQL database using Lakehouse Federation in Databricks, follow these steps:

1. In your Databricks workspace, click on "Catalog".
2. In the left pane, expand the "External Data" menu and select "Connections".
3. Click on "Create connection".
4. Enter a user-friendly Connection name.
5. Select a Connection type of MySQL.
6. Enter the following connection properties for your MySQL instance:
   - Host: For example, mysql-demo.lb123.us-west-2.rds.amazonaws.com
   - Port: For example, 3306
   - User: For example, mysql_user
   - Password: For example, password123
7. (Optional) Click on "Test connection" to confirm that it works.
8. (Optional) Add a comment.
9. Click on "Create".

Alternatively, you can run the following command in a notebook or the Databricks SQL query editor:

CREATE CONNECTION <connection-name> TYPE mysql OPTIONS ( host '<hostname>', port '<port>', user '<user>', password '<password>' );

Replace the placeholders with your actual MySQL connection details. It is recommended to use Databricks secrets instead of plaintext strings for sensitive values like credentials.

For more information about setting up secrets, see Secret management in the Databricks documentation.