anchor.diff:      {noreply, State};
   
   command({describe_portal, Name}, State) ->
  +    %% > Describe
  +    %% < RowDescription | NoData
       send_multi(State, [
           {?DESCRIBE, [?PORTAL, Name, 0]},
           {?FLUSH, []}
  
positive.code: %% uses default (text) column format,
  %% sends Describe after Bind to get RowDescription
  command({equery, Statement, Parameters}, #state{codec = Codec} = State) ->
      #statement{name = StatementName, columns = Columns} = Statement,
      Bin1 = epgsql_wire:encode_parameters(Parameters, Codec),
      Bin2 = epgsql_wire:encode_formats(Columns),
  
negative.code:     {noreply, State};
  
  command({parse, Name, Sql, Types}, State) ->
      %% > Parse
      %% < ParseComplete
      %% > Describe
      %% < ParameterDescription
      %% < RowDescription | NoData
      Bin = epgsql_wire:encode_types(Types, State#state.codec),
      send_multi(State, [
          {?PARSE, [Name, 0, Sql, 0, Bin]},
  