declare

  v_number1 number(3); -- 外层循环变量

  v_number2 number(3); -- 内层循环变量

begin

  for v_number1 in 1..9 -- 开始外层循环

  loop

      for v_number2 in 1 .. v_number1 -- 开始内层循环

      loop

          dbms_output.put(rpad(v_number1||'*'||v_number2||'='||v_number1*v_number2,8,' '));

      end loop;

      dbms_output.put_line(''); -- 换行

  end loop;

end;