I am trying to do something that I know is possible on older versions of the Joiner node but can’t figure out how to do, either on the old or newer version of Joiner.
How do I set my joiner node to select more than one column to include from the left table using flow variables. It seems I can only choose one flow variable and therefore only one column name using the leftColumnSelectionConfig options in the Flow Variables tab of the Joiner node.
Flow variables have an icon next to them to show what their type is. If you look at the included_names flow variable under the leftColumnSelectionConfig, you can see the icon as S[], which means a list/collection of string.
So you can pass multiple column names as a list/collection.
Thank you @bruno29a that’s what I needed indeed! Used a table creator, a create column selection node and a groupby to create my list of variables to pass on to the joiner!