SQL 排序 . 有字母和数字的先按字母后按数字

select   *  from tb  order by cast ( left([col1],patindex('%[^0-9]%',[col1]+',')-1 ) as int) 
,[col1] desc

结果:

col1
zz
dd
aa
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

select left([col1],patindex('%[^0-9]%',[col1]+',')-1 ) from tb

过滤掉了字符的.