如何在用單引號引用列的值後更新 MySQL 表？

mysql> UPDATE examination_btech SET Course = QUOTE(Course);
Query OK, 10 rows affected (0.05 sec)

mysql> Select * from examination_btech;
+--------+----------+----------+
| RollNo | Name     | Course   |
+--------+----------+----------+
| 1      | Rahul    | 'B.Tech' |
| 2      | Raman    | 'B.Tech' |
| 3      | Sahil    | 'B.Tech' |
| 4      | Shalini  | 'B.Tech' |
| 5      | Pankaj   | 'B.Tech' |
| 6      | Mohan    | 'B.Tech' |
| 7      | Yash     | 'B.Tech' |
| 8      | digvijay | 'B.Tech' |
| 9      | Gurdas   | 'B.Tech' |
| 10     | Preeti   | 'B.Tech' |
+--------+----------+----------+
10 rows in set (0.00 sec)