使用2個外鍵作為主鍵創建表時出現MySQL語法錯誤

Question

當我運行以下查詢時，我總是收到1064錯誤，但我不明白它是怎么了：

CREATE TABLE hashmkb_mangatracker.group_release
(
 group_id int NOT NULL,
 release_id int NOT NULL,
 PRIMARY KEY (group_id, release_id),
 UNIQUE INDEX (release_id, group_id),
 FOREIGN KEY (group_id) REFERENCES group(id),
 FOREIGN KEY (release_id) REFERENCES release(id)
) ENGINE=INNODB;

錯誤：

#1064 - 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 'group(id),
FOREIGN KEY (release_id) REFERENCES release(id)
) ENGINE=INNODB' at line 7 

感謝幫助。

Answer 1

GROUP是MySql中的保留關鍵字。 RELEASE也是如此。 您將必須在這些周圍添加反引號：

CREATE TABLE hashmkb_mangatracker.group_release
(
 group_id int NOT NULL,
 release_id int NOT NULL,
 PRIMARY KEY (group_id, release_id),
 UNIQUE INDEX (release_id, group_id),
 FOREIGN KEY (group_id) REFERENCES `group`(id),
 FOREIGN KEY (release_id) REFERENCES `release`(id)
) ENGINE=INNODB;

這是所有保留字的列表： http : //dev.mysql.com/doc/refman/5.6/en/reserved-words.html