How to use the MySQL OCTET_LENGTH() function to count the number of characters stored in a data column?

mysql> Select Name, OCTET_LENGTH(Name)As 'Str_Length' from Student;
+---------+------------+
| Name    | Str_Length |
+---------+------------+
| Gaurav  | 6          |
| Aarav   | 5          |
| Harshit | 7          |
| Gaurav  | 6          |
| Yashraj | 7          |
+---------+------------+
5 rows in set (0.00 sec)

mysql> Select Name, OCTET_LENGTH(Name)As &#39;Str_Length&#39; from Student Where OCTET_LENGTH(Name) < 7;
+--------+------------+
| Name   | Str_Length |
+--------+------------+
| Gaurav | 6          |
| Aarav  | 5          |
| Gaurav | 6          |
+--------+------------+
3 rows in set (0.06 sec)