/test-data/column_join_in11.pileup

 10610009D07Rik	3	1.73	1.73	1.15	12/12	2	1
 20610010K14Rik	1	1.41	1.41	0.96	6/12	1	1
 31110002N22Rik	3	2.08	2.08	0.74	10/12	2	1
 41110008L16Rik	1	1.00	1.00	-1.35	12/12	1	1
 5Acta1	2	1.54	1.54	0.63	11/12	2	1
 6Actb	1	1.33	1.33	0.00	9/12	2	1
 7Actg1	1	3.00	3.00	0.87	4/12	2	1
 8Actl6a	1	1.10	1.10	-0.33	10/12	1	1
 9Actl6b	1	2.45	2.45	2.13	2/12	1	1
10Bnc2	1	2.00	2.00	1.67	3/12	1	1
11Bptf	1	3.46	3.46	3.17	1/12	1	1
12Brip1	1	1.22	1.22	-0.19	8/12	1	1
13Brms1l	1	12.00	12.00	3.17	1/12	2	1
14Btf3;Gm3531	1	2.00	2.00	1.67	3/12	1	1
15Bub3	3	2.00	2.00	2.13	9/12	1	1
16C330007P06Rik	1	2.45	2.45	2.13	2/12	1	1
17Cad	1	2.45	2.45	0.50	2/12	1	1
18Calm1;Calm3;Calm2	1	2.00	2.00	1.03	3/12	1	1
19Cbx1	2	3.39	3.39	2.24	5/12	2	1
20E2f6	1	2.40	2.40	0.53	5/12	2	1
21Eed	1	1.20	1.20	-0.47	10/12	2	1
22Gm10079	2	1.41	1.41	0.16	12/12	1	1
23Gm11230	2	1.48	1.48	1.21	11/12	1	1
24Gm13072;Trmt112	1	3.46	3.46	3.17	1/12	1	1
25Gm13092;LOC677017	1	1.33	1.33	0.29	9/12	2	1
26Gm14231	1	1.31	1.31	0.51	7/12	1	1
27Gm14456;Tpt1	1	2.00	2.00	1.67	3/12	1	1
28Gm15501;Rps8	1	1.55	1.55	1.14	5/12	1	1
29Gm189	1	1.20	1.20	0.16	10/12	2	1
30Sfrs11	3	1.73	1.73	1.15	12/12	2	1
31Sin3a	4	3.43	3.43	1.93	7/12	2	1
32Sirt7	1	2.00	2.00	1.67	3/12	1	1
33Skiv2l2	12	3.46	3.46	-0.72	12/12	2	1
34Tubb2b	4	2.00	2.00	0.49	12/12	2	1
35Zscan4e	1	1.41	1.41	0.63	6/12	1	1
36Zscan4f	2	1.70	1.70	1.00	10/12	2	1