Control: tags -1 moreinfo Hello Jörg!
This bug (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876398) seems to be due the fact that the mysqltest binary does not support this option. It supports character_set but not default_character_set. I don't know what the solution would be here. Maybe you can research it yourself a bit more to at least map out what options we have, or if upstream has any plans to update that binary to support such an option? Maintaining MariaDB in Debian requires a lot of work and if you find this package important, please contribute by helping fix this bug. Also, if you test out current MariaDB 10.3 in Debian and find any new issues, please "scratch your own itch" and help out by fixing them. The preferred way of submitting contributions is as merge requests on Debian's Salsa system: https://wiki.debian.org/Teams/MySQL/patches If you are not an open source contributor yourself, please consider paying somebody else to contribute to issues that are important for you/your business.