#h name uid
# should make 3 lines
John__Heidemann  2274
# should make 3 lines
Greg_Johnson_    2275
# should make 2 lines
_Root    0
# check for duplicate entries; should make 4 lines
a___b 1
# expect 1 line (special case)
_ 1
# expect 1 lines (special case)
__
# this is a simple database
# modified to test various corner cases
#  | dbcol fullname uid
#  | dbcolrename fullname name