Syntax error MySQL query to retrieve only the column values with special characters?

MySQL query to retrieve only the column values with special characters?

For this, use REGEXP. Let us first create a table −

mysql> create table DemoTable(SubjectCode varchar(100));
Query OK, 0 rows affected (0.89 sec)

Insert some records in the table using insert command. The records consists of text, numbers and special characters −

mysql> insert into DemoTable values('Java899@22');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('C#');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('~Python232');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('MongoDB%');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable values('C123456');
Query OK, 1 row affected (0.37 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-------------+
| SubjectCode |
+-------------+
| Java899@22  |
| C#          |
| ~Python232  |
| MongoDB%    |
| C123456    |
+-------------+
5 rows in set (0.00 sec)

Following is the query to get all the values with special characters −

mysql> select *from DemoTable where SubjectCode regexp '[^a-zA-Z0-9\&]';

This will produce the following output −

+-------------+
| SubjectCode |
+-------------+
| Java899@22  |
| C#          |
| ~Python232  |
| MongoDB%    |
+-------------+
4 rows in set (0.00 sec)
Updated on: 2019-08-22T08:20:11+05:30

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