Although to be fair, you don't have to actually specify a database when connecting. When I tested this with both the mysql and mariadb command-line clients, they were able to connect when not ...

MySQL ShellでSQLを実行してみる 抜けた後、もう一度 mysqlsh でMySQL Shellにログインしましょう。 bash-4.4# mysqlsh 〈中略〉 MySQL localhost JS > まずは、MySQLサーバにどの様なデータベースがあるか確認する show database を実行してみたいと思います。

We're adding support for reading mysql tables in Ibis and despite the documentation using localhost, and localhost also being the default, it seems that localhost doesn't work. D install mysql; D load ...