Mainframe, MVS and zOS Discussion

Hi.

I ned a help in a SORT. Consider the input like this:

XX 100
XX 140
YY 500
YY 50
YY 50


I need the counts of duplicates in another column. Using SUM fields gives the follwoing output:

XX 240
YY 600


But as I said before, I also need to add count of duplicate records in output ...