为什么“插入或更新”中的命令更新工作不对？

Question

INSERT INTO `Users`
                (ID,FirstName,LastName) 
                    VALUE 
                ('60','Alex','Mathew') 
                ON DUPLICATE KEY 
                UPDATE 
                    FirstName = 'Alex' AND LastName = 'Mathew'

ID - is the Unique key

插入有效，但将FirstName更新为＆＃39; 0＆＃39;。错误在哪里？

Answer 1

测试它：

INSERT INTO `Users`
                (ID,FirstName,LastName) 
                    VALUE 
                ('60','Alex','Mathew') 
                ON DUPLICATE KEY 
                UPDATE 
                    FirstName = 'Alex', LastName = 'Mathew'

在＆＃39;，＆＃39;

上更改AND