I think it comes down to if your program is “dependent” on mysql then the licensing may affect you
MariaDB has the same issues
And its not necessarily YOU that needs to include the license but the end user of your software - they may already have one
Personally I avoid 100% of this ambiguity & use PostgreSQL which has an unambiguous “free for any use” license
Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies.