# joined(_:on:kind:) Generates a data frame by joining with another data frame type with a common column you select by name. ``` func joined(_ other: R, on columnName: String, kind: JoinKind = .inner) -> DataFrame where R : DataFrameProtocol ``` ## Parameters `other` A data frame type that represents the right side of the join. `columnName` A column name that exists in both data frame types. `kind` A join operation type. ## Return Value A new data frame. --- 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)