Sum Excel Distinct Values

Question

I know how to do this with MySQL, but am at a loss as to how (or even if possible) within MS Excel. I am running Excel version 14 on Windows (part of Office Professional 20

Answer 1

In column C use the SUMIF() Function like this:

=SUMIF(A:A,$A2,B:B)

This would give the total for every Phone#. I understand the benefits of the previous answers, but depending on the users needs this might be what is being sought.