Multi Row Duplicate Aggregation

I am not sure whether we can achieve that at report level.

Hi,

  I tried to aggregate the row values of cost based on only File excluding material like below:

Material  File    Cost   

 801        A      10      

 802        B       5       

 803        B       20     

 804        B       30     

 805        C       25     

My formula was this:

=Sum( ForAll()) In ()