Split or parse large String of data columns using a structure in CDS View

I have a Database table DB_TAB with two columns

Col1- Key

Col2-Data_field(1000 Characters)

Also a DB structure DB_STRUC with mulple fields. say

field1,field2,field2,field3.

A common example would be SDATA field in EDID4. How can I use DB_STRUC and split DB_TAB-DATA_FIELD into proper format in CDS views. Is there a way.