Question

I’m creating a dev copy of a live databases with some modifications for testing. Is there a way to copy a MySQL user defined FUNCTION between databases? Or do I need to recreate it manually?

Answer 1

Yes, use mysqldump with --routines options to export them from your source db:

mysqldump <other mysqldump options> --routines > your_output_file.sql 

And to import them in the destination db, use

mysql <database> < your_output_file.sql

You can see the mysqldump reference here