Got an issue in the SQL table that it is by default inserting NULL values but I need blank values instead NULLs.
You would see this when you right click on table on object explorer. Right Click on table name and click design and highlight the column you are looking for and see the column properties at the below. Change the Default Value or Binding from blank to ‘’ (single quotes without empty space in the middle)
Verify the fix by inserting new records in the table and observe.