mysql - 按字符串和数字排序，首先是数字，然后是 'strings of numbers'

Question

我的表中有一个包含各种条目的 varchar 字段。如何使用 order by 语句获得以下结果:

1
2
3
4
5
6
7
8
9
10
Steinstrass 1
Steinstrass 2
Steinstrass 3
Steinstrass 4
Steinstrass 5
Steinstrass 6
Steinstrass 7
Steinstrass 8
Steinstrass 9
Steinstrass 10

Answer 1

这对我有用:

mysql> select * from sorting;
+---------+
| field1  |
+---------+
| 1       |
| 4       |
| 10      |
| Item 1  |
| Item 10 |
| Item 0  |
| 0       |
+---------+
7 rows in set (0.00 sec)

mysql> select field1 from sorting order by length(field1),field1 asc;
+---------+
| field1  |
+---------+
| 0       |
| 1       |
| 4       |
| 10      |
| Item 0  |
| Item 1  |
| Item 10 |
+---------+
7 rows in set (0.00 sec)