Comments - Windows OS MariaDB 10.2 to 10.11.5
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
Yes, upgrade will change the structure of the system tables, but not of the user tables. Keep a backup of the original data if anything in the upgrade goes wrong.