Upserts in MonetDB

Hi All, I have been looking into UPSERTING records in MonetDB but didn't find anything. Only few years before somebody had asked the same question - https://www.monetdb.org/pipermail/users-list/2011-May/004916.html but no solution for that. Since its been few years from then , so I was wondering if MonetDB does provide the ability to do UPSERTS. Any pointers here will be really helpful. Thanks