There does not appear to be an option for that:
Option:
databases
(required)Database name, e.g.,
homeassistant
. Multiple are allowed.Option:
logins
(required)This section defines a create user definition in MariaDB. Create User documentation.
Option:
logins.username
(required)Database user login, e.g.,
homeassistant
. User Name documentation.Option:
logins.password
(required)Password for user login. This should be strong and unique.
Option:
rights
(required)This section grant privileges to users in MariaDB. Grant documentation.
Option:
rights.username
(required)This should be the same user name defined in
logins
→username
.Option:
rights.database
(required)This should be the same database defined in
databases
.