TRUNCATE sub partition?

Hi,

The following command will truncate a partition :

ALTER TABLE subpartionedtable TRUNCATE PARTITION p002;

But when I try it with a sub partition ...

ALTER TABLE subpartionedtable TRUNCATE PARTITION p002sp3;

it fails with

Error 1567 Incorrect partition name.

The subpartition name is correct, if I try with a non-existent one the error is different :

ALTER TABLE subpartionedtable TRUNCATE PARTITION whatever;

Error 1735 Unknown partition 'whatever' in table 'subpartionedtable'

"TRUNCATE TABLE" does not seem to take a PARTITION specifier.

I can do this of course :

DELETE FROM subpartionedtable PARTITION (p002sp3);

But I wonder if truncate subpartition is available some other way?

version 10.2.9-MariaDB

Thanks!