-- Fix a bug in the required value optimization phase by using the new    ranking column information.
-- Fix a bug in the required value optimization phase by using the new
   ranking column information.

-- Rewrite 'and' operators whose output is filtered into two selections
   on the input columns.

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