I have a list comprised of (at a basic level) a date, code and value. I need to combine any items with the same code from the same date. I would appreciate any help in this.
ex.
Code Date Value
A1000 06-29-2015 5
A1000 06-29-2015 3
A1000 06-29-2015 1
A2000 06-29-2015 5
A2000 06-29-2015 5
A1000 06-28-2015 9
A1000 06-28-2015 5
I need the resulting list to look as follows
A1000 06-29-2015 9
A2000 06-29-2015 10
A1000 06-28-2015 14