How can I SUM specific columns in a Data Table if they exist?
I am trying to write a script to sum specific columns if they are present in the data table. Lets call them Col A, Col B, Col C, Col D. The problem is the data table does not always have all four columns which results in an error. I would like to write a script that can add Col A, Col B, Col C, and Col D that are present in the data table. Obviously I could just update the code for the ones presen...