SQlite select returns "(null)" instead of "" for empty values

I have written a C program in Linux that reads a local Sqlite3 DB to update a remote MySQL DB. When optional fields in the Sqlite table are empty I get the string "(null)" when doing a select. This ends with a lot of "(null)" strings in the remote MySQL database.

Is there any flag or configuration option in Sqlite3 to get empty strings "" when the table's field is empty?