Partitioning

Hi, is there any way you could help me devise a very basic configuration for partitioning? Basically, I have a WordPress users table (k2bi_users) on one database (1757) and then I have all the other 70 or so WordPress tables (k2bi_xxx) on another database (1893). How can I set up the configuration so that it calls on the 1757 database for the users table and the other database for all the other tables?

I know it’s a strange setup, and it may sound like I’m an idiot, but this is exactly what I need. Nothing else. The reason being I have a unique user registration system that can only exist on an external database, but the connection is extremely slow. That is why I want all my other tables to be on the internal database.

Thanks so much for the help! I’ll be eternally grateful to figure this out ?? .