I'm working with the data below to identify duplicates based on the "full part number" and want to sum all "part rates" associated with those "full part numbers".
Example: for 7L14-1040-AA0028, each row would should say "94.44%". I want to keep duplicates in the file.
How can I recognize duplicates, not remove them, and then sum the "part rate" for all of the duplicate parts without summing an entire column?
