Need Summary from internal table

hi experts.

i have following case

i have internal table i_detail which contain .

invNo amount Customer

1 12 A

2 5 A

3 15 B

4 10 C

now i want summary like that according to customer

Customer Amount NoOfInvoices.

A 17 2

B 15 1

C 10 1

ow can i process loop or any thing else which give me summary in another internal table.

Edited by: HarrisAhmed on Mar 26, 2009 11:49 AM

Edited by: HarrisAhmed on Mar 26, 2009 11:51 AM

Edited by: HarrisAhmed on Mar 26, 2009 11:52 AM