How to sort an alphanumeric column with different lengths in MySQL?
Let us first create a table −
mysql> create table DemoTable1623
-> (
-> StudentCode varchar(20)
-> );
Query OK, 0 rows affected (0.47 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1623 values('STU-MIT-143');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable1623 values('STU-MIT-10');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1623 values('STU-MIT-150');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable1623 values('STU-MIT-148');
Query OK, 1 row affected (0.22 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1623;
This will produce the following output −
+-------------+
| StudentCode |
+-------------+
| STU-MIT-143 |
| STU-MIT-10 |
| STU-MIT-150 |
| STU-MIT-148 |
+-------------+
4 rows in set (0.00 sec)
Here is the query to sort an alphanumeric column with different lengths in MySQL.
mysql> select * from DemoTable1623
-> order by substring_index(StudentCode, '-', 1),
-> substring_index(StudentCode, '-', -1) + 0;
This will produce the following output −
+-------------+
| StudentCode |
+-------------+
| STU-MIT-10 |
| STU-MIT-143 |
| STU-MIT-148 |
| STU-MIT-150 |
+-------------+
4 rows in set (0.00 sec)
Published on 08-Nov-2019 11:14:54
