[Yurk@]

попробуй так:

Код:

ADOQuery1.Close;
ADOQuery1.SQL.Text:='select * from materialcopy WHERE (data>= :date1) and (data<= :date2)';
ADOQuery1.ParamByName('date1').AsDateTime:= FromDate1.DateTime;
ADOQuery1.ParamByName('date2').AsDateTime:= ToDate1.DateTime;
ADOQuery1.Open;