mysql> select * from ATRs;
+-----+-------------+---------------+-------+----------+
| Id  | Name_       | Team          | Goals | Trophies |
+-----+-------------+---------------+-------+----------+
| 110 | Messi       | Barcelona     |   699 |        0 |
| 107 | Ronaldo     | Juventus      |    60 |        0 |
| 107 | Ronaldo     | Real Madrid   |    60 |        0 |
| 109 | Lewandowski | Bayern Munich |   400 |       10 |
| 109 | Lewansowski | Dortmund      |    88 |        4 |
| 210 | Neymar      | Barcelona     |   121 |        9 |
| 210 | Neymar      | Paris         |    48 |        1 |
+-----+-------------+---------------+-------+----------+
7 rows in set (0.00 sec)

这是我的桌子

alter table ATRs change Name_ Name varchar(22);

在这个命令之后，服务器根本没有响应，之后我写的任何东西都被当作纯文本处理。