MySQL字符串類型數字排序

t_stu

id	stuNo(varchar)	stuName
1	1	Jack
2	2	Lucy
3	11	Tom

select * from t_stu order by stuNo asc;

id	stuNo(varchar)	stuName
1	1	Jack
3	11	Tom
2	2	Lucy

select * from t_stu order by stuNo*1 asc;
//select * from t_stu order by stuNo+0 asc;

id	stuNo(varchar)	stuName
1	1	Jack
2	2	Lucy
3	11	Tom

select * from t_stu order by -stuNo asc;

id	stuNo(varchar)	stuName
3	11	Tom
2	2	Lucy
1	1	Jack

select * from t_stu order by --stuNo asc;

id	stuNo(varchar)	stuName
1	1	Jack
2	2	Lucy
3	11	Tom

參考博客：

Mysql按數字大小排序String字段

mysql 字符串裏面的數字,按照大小排序