# subscript(_:_:) Retrieves a column with the specified name and type. ``` subscript(columnName: String, columnType: T.Type) -> MLDataColumn? where T : MLDataValueConvertible { get } ``` ## Parameters `columnName` The name of the column to extract. `columnType` The underlying type of the column’s content. ## Return Value A new [`MLDataColumn`](/documentation/CreateML/MLDataColumn) with the specified name and type, if it exists; otherwise `nil`. ## Overview Use this subscript to get a typed [`MLDataColumn`](/documentation/CreateML/MLDataColumn), which is easier to work with than a [`MLUntypedColumn`](/documentation/CreateML/MLUntypedColumn) returned from [`subscript(_:)`](/documentation/CreateML/MLDataTable/subscript(_:)-3wjk). --- 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)