Hi @shyamspr

Thanks for sharing the answer. Actually i have tried with the approach like taking the header from raw filename and then adding those again.But the issue is want to explicitly change the data type as required without reading for inferring schema .

is there any way can add data type along with column name programmatically like in case where we have 30+ columns.

that's why trying to have schema file separately where we have column name and data type in list or structfiled.