Package: mariadb-server
Version: 1:10.3.29-0+deb10u1
In the last upgrade of maridb-server package for debian buster (version
1:10.3.29-0+deb10u1), the following bug is now affecting any system that
installed the update:
https://jira.mariadb.org/browse/MDEV-25714
This bug has been fixed in version 10.3.30 and has been marked as
emercency because is compromising the results of some type of queries
(subqueries with group by).
An update or a rollback is necessary, a workaroud suggested by Mariadb
is also available (optimizer_switch='split_materialized=off')
