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)