all XMark queries seem to work with the algabra version, again; hence, we can remove this temporary HACK, again.
all XMark queries seem to work with the algabra version, again;
hence, we can remove this temporary HACK, again.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb