Split the columns as specified in the registration database.
Arguments
- dt
 Input data preferrably in a
data.tableformat but is not mandatory- split
 Split specification as a list. Should be equivalent to the output of
get_split()function
Split the columns as specified in the registration database.
Input data preferrably in a data.table format but is not mandatory
Split specification as a list. Should be equivalent
to the output of get_split() function