throw away some old code, kept some pieces that can be useful if we decide to build a tree based index too
throw away some old code,
kept some pieces that can be useful if we decide to build a tree based index too

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