anchor.diff:      {EKey, EInc};
   rewrite_end_key_with_filters([AddFieldName|Tail], ToKeyTypeFn, Filter, EKey, EInc1) when is_binary(AddFieldName) ->
       case proplists:get_value(AddFieldName, Filter) of
  -        {Op,_,_} = F  when Op == '='; Op == '<' ->
  +        {Op,_,_} = F  when Op == '='; Op == '<'; Op == '<=' ->
               EKeyElem = to_key_elem(ToKeyTypeFn, F),
               %% if the quantum was inclusive, make sure we stay inclusive or
               %% the quantum boundary is modified later on
  
positive.code:         S?SQL_SELECT.'WHERE'
      ).
  
  -endif.
  
negative.code:     {Field, FieldType, _OldVal} = lists:keyfind(Field, 1, TupleList),
      lists:keyreplace(Field, 1, TupleList, {Field, FieldType, NewVal}).
  
  -record(filtercheck, {name,'=','>','>=','<','<='}).
  
  check_where_clause_is_possible(DDL, WhereProps) ->
      Filter1 = proplists:get_value(filter, WhereProps),
  