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Answer

Calculate cost per group and show it only in the first row

Martin James

Martin James

3y
623
1
I an employee which went to 3 clients I want to add the cost of his journey but want to show it only at his first journey ,the total cost.
Current output : 
Employee Customer  cost
A              1                200
A              2                400
A              3                 100
B              1                 200
 
Expected output : 
 
Employee Customer cost
A          1                   700
A          2
A          3
B          1                    200
 
 
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