Sort only numbers from alphanumeric string in MySQL?

To sort only numbers from alphanumeric string, use ORDER BY RIGHT(). Let us first create a table −

mysql> create table DemoTable1948
   (
   StudentCode varchar(20)
   );
Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1948 values('121John_567');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1948 values('Adam_101');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1948 values('Bob_563');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1948 values('Sam_346');
Query OK, 1 row affected (0.00 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1948;

This will produce the following output −

+-------------+
| StudentCode |
+-------------+
| 121John_567 |
| Adam_101    |
| Bob_563     |
| Sam_346     |
+-------------+
4 rows in set (0.00 sec)

Here is the query to sort only numbers from alphanumeric string in MySQL −

mysql> select * from DemoTable1948
   order by RIGHT(StudentCode,3);

This will produce the following output −

+-------------+
| StudentCode |
+-------------+
| Adam_101    |
| Sam_346     |
| Bob_563     |
| 121John_567 |
+-------------+
4 rows in set (0.00 sec)