#fsdb -R C cid sid cname
cid: 10
sid: 1
cname: pascal

cid: 11
sid: 2
cname: numanal

cid: 12
sid: 1
cname: os

cid: 12
sid: 2
cname: os

#   | dbfilealter -R C
#  | dbsort -n cid
#   | dbfilealter -R C
#   | dbjoin -S --input TEST/dbjoin_ex_R.in-2 -n cid
