Extract Middle Part of Column Values in MySQL

Use the SUBSTR() method to extract the middle part of column values surrounded with hyphens, for example, “11-84848-11”.

Let us first create a table −

mysql> create table DemoTable
-> (
-> Number varchar(100),
-> Number1 varchar(100)
-> );
Query OK, 0 rows affected (0.56 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(Number) values('11-84848-11');
Query OK, 1 row affected (0.15 sec)

mysql> insert into DemoTable(Number) values('22-99999-22');
Query OK, 1 row affected (0.13 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+-------------+---------+
| Number      | Number1 |
+-------------+---------+
| 11-84848-11 | NULL    |
| 22-99999-22 | NULL    |
+-------------+---------+
2 rows in set (0.00 sec)

Following is the query to extract the middle part of column values in MySQL −

mysql> update DemoTable
-> set Number1=SUBSTR(Number,4,5);
Query OK, 2 rows affected (0.19 sec)
Rows matched: 2 Changed: 2 Warnings: 0

Let us check the table records once again −

mysql> select *from DemoTable;

Output

This will produce the following output −

+-------------+---------+
| Number      | Number1 |
+-------------+---------+
| 11-84848-11 | 84848   |
| 22-99999-22 | 99999   |
+-------------+---------+
2 rows in set (0.00 sec)