I believe multiple variants would be good. One that would be good to have is the canonical jdbc canonical url, like:

jdbc:mysql://localhost:3306/sonoo

Right! Can Robert specify the exact proposed syntax in this MDBF, as a next step?

I would go only with a json/yaml file for specifying the connection info along with other options for this release.
The argument is that if you add `%connect`, it's nice if you go all the way through and do what Teradata did (and what mysql-test does), i.e. ability to create new connections, switch between them, add cell magic that executes the code for a particular cell using the specified connection in the cell magic, and so on. But even if we add only `%connect`, there are still further questions that need to be answered, what happens if the user doesn't specify a `%connect` statement, what happens if the user runs some code in some cells then, in the 3rd cell for instance, there is a `%connect` magic. So I'd say better leave it as a feature for after we release the mvk, what do cvicentiu and kaj think?

Moved to GitHub issues: https://github.com/MariaDB/mariadb_kernel/issues/10