die#fsdb name test1
a	85
b	75
#   | dbcol name test1 --input - --output [::FsdbIPC]
#  | dbroweval  '{ _test1 += 1; }'
#  | dbroweval  '{ _test1 += 1; }'
#  | dbroweval  '{ _test1 += 1; select(undef,undef,undef,0.1); }'
#  | dbroweval  '{ _test1 += 1; if (++$count == 2) { print STDERR "die"; }; }'
#  | dbroweval  '{ _test1 += 1; select(undef,undef,undef,0.1); }'
