ADOQuery2.Close;
ADOQuery2.SQL.Clear;
ADOQuery2.SQL.Add('SELECT data FROM  T1 WHERE (dat >= CONVERT(DATETIME, "1989/05/07 12:00:00  ", 102)) AND (dat <= CONVERT(DATETIME, "2000/09/08 12:00:00  ", 102))') ;
ADOQuery2.Active:=True;