oracle plsql 乘法表

begin

  for v1 in 1 .. 9 loop

    for v2 in 1 .. v1 loop

      dbms_output.put(v1 || ' X ' || v2 || ' = ' || v1 * v2 || '   ');

    end loop;

    dbms_output.put_line('');

  end loop;

end;

1 X 1 = 1   

2 X 1 = 2   2 X 2 = 4   

3 X 1 = 3   3 X 2 = 6   3 X 3 = 9   

4 X 1 = 4   4 X 2 = 8   4 X 3 = 12   4 X 4 = 16   

5 X 1 = 5   5 X 2 = 10   5 X 3 = 15   5 X 4 = 20   5 X 5 = 25   

6 X 1 = 6   6 X 2 = 12   6 X 3 = 18   6 X 4 = 24   6 X 5 = 30   6 X 6 = 36   

7 X 1 = 7   7 X 2 = 14   7 X 3 = 21   7 X 4 = 28   7 X 5 = 35   7 X 6 = 42   7 X 7 = 49   

8 X 1 = 8   8 X 2 = 16   8 X 3 = 24   8 X 4 = 32   8 X 5 = 40   8 X 6 = 48   8 X 7 = 56   8 X 8 = 64   

9 X 1 = 9   9 X 2 = 18   9 X 3 = 27   9 X 4 = 36   9 X 5 = 45   9 X 6 = 54   9 X 7 = 63   9 X 8 = 72   9 X 9 = 81