You now believe the ability to quickly and easily create novel Amazon Redshift datasources in Amazon Machine Learning (Amazon ML) by copying settings from an existing Amazon Redshift datasource. A novel option on the Amazon ML console allows you to select an existing Redshift datasource to copy the Redshift cluster name,database name, IAM role, or SQL query and staging data location,to automatically populate these fields in the Create Datasource wizard. You can modify the settings before the novel datasource is created, for example, or to change the SQL query,or to specify a different IAM role to access the cluster.
Source: amazon.com