mysql join没有工作给出错误

Question

值表

id  name    attributes_id
1   black   3 [->]
2   red     3 [->]
3   blue    3 [->]
5   tortorise   3 [->]
6   oakley  1 [->]
9   green   3 [->]
10  native  1 [->]

product_values表

values_id   products_id
1 [->]  5 [->]
2 [->]  10 [->]

SQL

SELECT values.name, product_values.products_id  FROM `product_values`  inner 
join values ON product_values.values_id=values.id;

错误

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 'values on 
product_values.values_id=values.id' at line 1

感谢您的帮助。

Answer 1

您应该在values表引用周围添加一些引号。这是一个reserved word

SELECT
    `values`.name,
    product_values.products_id 
FROM
    product_values
    INNER JOIN `values` ON product_values.values_id = `values`.id;

Answer 2

根据手册，VALUES是mysql的保留关键字。见这里：MySQL Reserved Keywords List。为了避免语法错误，应使用名为backtick的符号转义关键字或列名称。例如，

SELECT values.name, product_values.products_id  
FROM   `product_values`  
        inner join `values` ON product_values.values_id = `values`.id;