更新视图格式：
UPDATE 视图名 ...
mysql> ALTER VIEW v2
-> (id,name,age)
-> AS
-> SELECT id,username,age FROM employee;
Query OK, 0 rows affected (0.02 sec)
mysql> SELECT * FROM v2;
+----+-----------+------+
| id | name | age |
+----+-----------+------+
| 1 | 张三 | 21 |
| 2 | 李四 | 32 |
| 3 | 王五 | 26 |
| 4 | 赵六 | 32 |
| 5 | Mr Adword | 55 |
| 6 | 田七 | 19 |
| 7 | 孙八 | 62 |
| 8 | Mr lili | 45 |
+----+-----------+------+
— 更新数据库
mysql> UPDATE v2 SET age=25 WHERE id=1;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
— 可以看到原数据表已经修改
mysql> SELECT * FROM employee;
+----+-----------+------+---------+--------+-------+------+
| id | username | age | salary | sex | depId | pId |
+----+-----------+------+---------+--------+-------+------+
| 1 | 张三 | 25 | 5432.12 | 男 | 1 | 1 |
| 2 | 李四 | 32 | 6432.00 | 男 | 2 | 2 |
| 3 | 王五 | 26 | 5932.92 | 女 | 3 | 3 |
| 4 | 赵六 | 32 | 6232.14 | 男 | 4 | 4 |
| 5 | Mr Adword | 55 | 9432.99 | 男 | 4 | 5 |
| 6 | 田七 | 19 | 4932.92 | 保密 | 1 | 3 |
| 7 | 孙八 | 62 | 9932.14 | 男 | 2 | 4 |
| 8 | Mr lili | 45 | 9132.99 | 女 | 1 | 5 |
+----+-----------+------+---------+--------+-------+------+