MySQL QUOTE() 函数如何处理比较值?

当使用WHERE子句与QUOTE()函数一起使用时,输出取决于WHERE子句返回的比较值。以下示例将展示:

示例

mysql> Select Name, ID, QUOTE(Subject)AS Subject from Student WHERE Subject = 'History';

+-------+------+-----------+
| Name  | ID   | Subject   |
+-------+------+-----------+
| Aarav | 2    | 'History' |
+-------+------+-----------+

1 row in set (0.00 sec)