php - 这个sql代码有什么问题？

Question

如果我删除行 condition=\''.$this->condition.'\', 它会起作用。

如果我放在那里，会出现以下错误消息:

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 'condition='unknown', promotional='0', website='0', quantity='1', ' at line 7

mysql_query('UPDATE products SET 
            name = \''.$this->name.'\', 
            description = \''.$this->description.'\',
            brand = \''.$this->brand.'\',
            model = \''.$this->model.'\',   
            price=\''.$this->price.'\', 
            condition=\''.$this->condition.'\', 
            promotional=\''.$this->promotional.'\', 
            website=\''.$this->website.'\', 
            quantity=\''.$this->quantity.'\',
            service=\''.$this->service.'\'  
            WHERE id = \''.$this->id.'\' '

Answer 1

CONDITION 是 reserved mysql keyword .您必须将其括在反引号中:

`condition`=\''.$this->condition.'\',