备份脚本中的错误查询导致错误1064

Question

以下代码是备份脚本（可能使用mysqldump）生成的较大查询中的一个最小示例。它导致错误，我不知道为什么。谁可以帮忙？

CREATE TABLE `tl_custom_tandem_lang` (
    `id` varchar(2) COLLATE latin1_german2_ci NOT NULL, 
    PRIMARY_KEY (`id`), 
    UNIQUE KEY `id` (`id`) 
); 

主要生产以下错误：

ERROR 1064 (42000): 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 '(id), UNIQUE KEY id (id))' at line 3

Answer 1

应该是PRIMARY KEY不PRIMARY_KEY（删除下划线使它工作）

CREATE TABLE `tl_custom_tandem_lang` 
(
    `id` varchar(2) COLLATE latin1_german2_ci NOT NULL, 
    PRIMARY KEY (`id`), 
    UNIQUE KEY `tb_unique` (`id`) 
); 

• SQLFiddle Demo

Answer 2

删除UNIQUE KEY一样在此之后， 'ID'：

CREATE TABLE `tl_custom_tandem_lang` (
    `id` varchar(2) COLLATE latin1_german2_ci NOT NULL, 
    PRIMARY_KEY (`id`), 
    UNIQUE KEY (`id`) 
);