Please add options to specify null representation (e.g. -in _, -on _ to use underscores as nulls in input, ouput (in the same way as -id, -od for delimiter)).
It seems that, for output, null and empty string cannot be differentiate; and there is no way to specify null in input.
Please add options to specify null representation (e.g.
-in _
,-on _
to use underscores as nulls in input, ouput (in the same way as-id
,-od
for delimiter)).It seems that, for output, null and empty string cannot be differentiate; and there is no way to specify null in input.
A workaround is to do it manully, e.g. with
coalesce
,nullif
, but it is tedious to do so for all columns.