#command cdx uniq -k two --agg-pre three_sum,three,sum --agg-post one_mean,one,mean
#stdin
 CDX	one	two	three
1.0	bbb	10
2.0	bbb	20
3.0	bbb	30
4.0	ccc	40
5.0	ccc	50
6.0	ccc	60
#stdout
 CDX	three_sum	one	two	three	one_mean
60	1.0	bbb	10	2
150	4.0	ccc	40	5