mysql>
mysql> CREATE TABLE test5(first_name CHAR(10));
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> INSERT INTO test5(first_name) VALUES ('Nkosi');
Query OK, 1 row affected (0.00 sec)
mysql>
mysql>
mysql> ALTER TABLE test5 CHANGE first_name first_name CHAR(10) BINARY;
Query OK, 1 row affected (0.01 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql>
mysql> SELECT first_name FROM test5 WHERE first_name='nkosi';
Empty set (0.00 sec)
mysql>
mysql> drop table test5;
Query OK, 0 rows affected (0.00 sec)