You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '

mysql中如果字段使用了关键字，在插入和更新时会提示  

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'desc


常见的关键字有 desc,asc ...,可以在字段名前后加上`  如  `desc`