In this scenario, is your mysql CLI client connected to the database through Prisma/DB?

是的

The database can't be changed within the same connection. One instance of a Prisma/DB Proxy supports just one database, if you need to connect to multiple databases - be it within one database server instance or not - you would need multiple Prisma/DB Proxy instances running, one per database.

I will leavbe this issue open to make sure we have better error messages when the user tries to switch the database.

了解了