# JoinKind

Namespace: Deedle

This enumeration specifies joining behavior for Join method provided by Series and Frame. Outer join unions the keys (and may introduce missing values), inner join takes the intersection of keys; left and right joins take the keys of the first or the second series/frame.

### Record Fields

 Record Field Description  Inner  Signature: JoinKind Modifiers: static Take the intersection of the keys available in both structures and align the values of the two structures. The resulting structure cannot contain missing values.  Left  Signature: JoinKind Modifiers: static Take the keys of the left (first) structure and align values from the right (second) structure with the keys of the first one. Values for keys not available in the second structure will be missing.  Outer  Signature: JoinKind Modifiers: static Combine the keys available in both structures, align the values that are available in both of them and mark the remaining values as missing.  Right  Signature: JoinKind Modifiers: static Take the keys of the right (second) structure and align values from the left (first) structure with the keys of the second one. Values for keys not available in the first structure will be missing.