2.04 对字母数字的混合排序

问题：现有字母和数字混合的数据，希望按照数字或字符部分来排序。考虑这个视图：

create view V
as
    select concat(ename, ‘ ‘,deptno) from emp;

mysql> select * from v;+---------------------------+| concat(ename, ‘ ‘,deptno) |+---------------------------+| SMITH 20                  || ALLEN 30                  || WARD 30                   || JONES 20                  || MARTIN 30                 || BLAKE 30                  || CLARK 10                  || SCOTT 20                  || KING 10                   || TURNER 30                 || ADAMS 20                  || JAMES 30                  || FORD 20                   || MILLER 10                 |+---------------------------+14 rows in set (0.00 sec)

由于MySQL不支持translate函数，这个问题无解决方案。