Is there a way to dynamically add columns (e. g. in Rule Engine or Column Expressions)?

[mlauber71]

@kowisoft how about two branches. One for the stable columns one for the dynamic ones. To deal with the column names in the Column Expressions Node you could do a loop that would:

rename the (dynamic) column to a temporary name “_temp_column_xyz” then do the transformation with this column (the name will always be the same for the expression) and then rename it back to the original one. You could only send this column wise to the loop and collect the results at the end. Not the most elegant way but once you have set it up it will be dynamic.

Like in this example:

Column sequence number as a multiplier for column value

@TigerCole regardless of increasing or decreasing. I inserted two dynamic elements. a loop that would treat each relevant column on its own thru renaming )not very elegant but it does work) a collection of strings to filter the relevant columns 1,2,3 … in the Multi Column node [image] kn_forum_48523_dynamic_lag_column_multiplier.knwf (277.1 KB)