# group(columnsNamed:aggregators:) Creates a new data table with the given columns and adds a new column for each of the given aggregators. ``` func group(columnsNamed: String..., aggregators: S) -> MLDataTable where S : Sequence, S.Element == MLDataTable.Aggregator ``` ## Parameters `columnsNamed` The name of the columns to include in the new data table. `aggregators` A sequence of aggregators, each of which adds a column in the new data table. ## Return Value A new data table. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)