SQL - ORDER BY无法正常工作？

Question

SELECT test_column FROM test_table ORDER BY test_column 给我这个:

1   
12  
123  
2  
3

为什么不:

1
2
3
12
123  

@JosephPla你明白了,谢谢.如何对数字字符串进行排序？

Answer 1

尝试

SELECT test_column 
FROM test_table 
ORDER BY cast(test_column as int)

但是您应该考虑将列类型更改为正确的列类型.

Answer 2

这工作我：-

ORDER BY cast(test_column as SIGNED)