我们是否可以用单个MySQL查询更新具有最高ID的行？

是的，我们可以这样做。让我们首先创建一个表 –

mysql> create table DemoTable
   (
   ID int,
   GameScore int
   );
Query OK, 0 rows affected (0.55 sec)

使用插入命令将一些记录插入表中 –

mysql> insert into DemoTable values(15,848747);
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable values(13,909049);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values(34,98474646);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values(31,948474);
Query OK, 1 row affected (0.27 sec)

使用SELECT语句从表中显示所有记录 –

mysql> select *from DemoTable;

阅读更多：MySQL 教程

输出

+------+-----------+
| ID   | GameScore |
+------+-----------+
| 15   | 848747    |
| 13   | 909049    |
| 34   | 98474646  |
| 31   | 948474    |
+------+-----------+
4行(0.00秒)

以下是使用单个查询更新具有最高ID的行的查询 –

mysql> update DemoTable set GameScore=GameScore+10 ORDER BY ID DESC LIMIT 1;
Query OK, 1 row affected (0.19 sec)
Rows matched : 1 Changed : 1 Warnings : 0

让我们再次检查表记录 –

mysql> select *from DemoTable;

输出

+------+-----------+
| ID   | GameScore |
+------+-----------+
| 15   | 848747    |
| 13   | 909049    |
| 34   | 98474656  |
| 31   | 948474    |
+------+-----------+
4行(0.00秒)