anchor.diff:      end;
   compile_select_col(DDL, Select) ->
       {ColTypes, IsValid, Fn} = compile_select_col_stateless(DDL, Select),
  -    % Finalisers = lists:duplicate(length(ColTypes), fun(State) -> State end),
  +    %% Finalisers = lists:duplicate(length(ColTypes), fun(State) -> State end),
       #single_sel_column{ calc_type        = rows,
                           initial_state    = undefined,
                           col_return_types = ColTypes,
  
positive.code:     lists:keyreplace(Field, 1, TupleList, {Field, FieldType, NewVal}).
  
  -ifdef(TEST).
  
  %%
  %% Helper Fns for unit tests
  
negative.code: %% from the row.
  -spec compile_select_col(DDL::#ddl_v1{}, ColumnSpec::any()) ->
                                  #single_sel_column{}.
  compile_select_col(DDL, {{window_agg_fn, FnName}, [FnArg1]}) when is_atom(FnName) ->
      case riak_ql_window_agg_fns:start_state(FnName) of
          stateless ->
              {ColTypes1, IsValid1, Fn} = compile_select_col_stateless(DDL, FnArg1),
  