create or replace procedure 
first_symbol (d_code out number, f_date out char, t_date out char) as
row  rowid;
begin
   select min(rowid) into row from symbol;
   select symbol_code,symbol,symbol_desc 
   into d_code,f_date,t_date 
   from symbol 
   where rowid=row;
  exception when no_data_found then 
	null;
end;
/