miller/docs/data/join-right-example.csv

1	status	idcode
2	present	400
3	present	100
4	missing	200
5	present	100
6	present	200
7	missing	100
8	missing	200
9	present	300
10	missing	600
11	present	400
12	present	400
13	present	300
14	present	100
15	missing	400
16	present	200
17	present	200
18	present	200
19	present	200
20	present	400
21	present	300