備份腳本中的錯誤查詢導致錯誤1064

Question

以下代碼是備份腳本（可能使用mysqldump）生成的較大查詢中的一個最小示例。它導致錯誤，我不知道爲什麼。誰可以幫忙？

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

主要生產以下錯誤：

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

應該是PRIMARY KEY不PRIMARY_KEY（刪除下劃線使它工作）

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

刪除UNIQUE KEY一樣在此之後， 'ID'：

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