example output: group by column 0, sum columns 2, 3 U1 3 337 3 630 U2 1 150 1 375 U3 1 100 1 600 U9 1 137 1 200 example output: group by column 1, sum columns 2, 3 ID1 3 337 3 1130 ID2 2 250 2 475 ID3 1 137 1 200 example output: group by column 2, sum columns 3 100 3 980 137 2 450 150 1 375