Group Columns by a list of values from another column?
I'm working to group several thousand columns together by name that matches with something from a list of values from an initial column example:Col1 values = {step1, step2, step3}Col2:5000 names :step1_blahblahblah, step2_blahblbahblah, etc I guess I'm not quite sure how to define the if(contain) statement uses the list of values from Col1. dt = current data table();
Summarize( dt, StepIDIndex= by
...