How do I create a new data table combining duplicate rows?
I have a indexed list of production runs of different products (A-H) and their start and end times. Sometimes there are two lines in a row with the same product (rows 1 & 2 and 7 & and I would like those to be combined into one row with the start time of the first row and end time of the second row. How would I use JSL to do this?