What I have?:
 ----------------------------------------------
    ID  Name            Value                    |
    ---------------------------------------------|          
    1   Bob             4                        |
    2   Mary            3                        |
    3   Bob             5                        |
    4   Jane            3                        |
    5   Jane            1                        |
    ----------------------------------------------
 
What I want?
Is there any ways to do out a calculated field where if the name is "Bob" , it'll sum up all the values that have the name "Bob"?