Values_0.JoinColumnSourceSpecifies a column to be joined.
type nonrec t = {from : EnclosedInStringProperty.t;The column to be joined.
*)keys : GlueStudioPathList.t;The key of the column to be joined.
*)}val to_value :
t ->
[> `Structure of
(string
* [> `List of
[> `List of [> `String of EnclosedInStringProperty.t ] list ]
list
| `String of EnclosedInStringProperty.t ])
list ]