mysql - 使用 mysql 将值插入带有外键的表中

Question

我想在包含外键的表中插入值，但是当我手动添加外键时(例如，通过写入外键的编号来手动添加外键的 id)，它不起作用，我的语法错误的错误。

#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 'FOREIGN KEY,

id_livreur int FOREIGN KEY,

id_plat int FOREIGN KEY,

id_dessert ' at line 4

这是我包含外键的表:

CREATE TABLE Commande
(
id_commande int NOT NULL AUTO_INCREMENT PRIMARY KEY,
id_client int FOREIGN KEY,
id_livreur int FOREIGN KEY,
id_plat int FOREIGN KEY,
id_dessert int FOREIGN KEY  ,
prix_total int,
heure_estime time,
FOREIGN KEY (id_client) REFERENCES Client(id_client),
FOREIGN KEY (id_livreur) REFERENCES Livreur(id_livreur),
FOREIGN KEY (id_plat) REFERENCES Plat(id_plat),
FOREIGN KEY (id_dessert) REFERENCES Dessert(id_dessert)
) ENGINE=InnoDB;

这是我的插入内容:

INSERT INTO Commande VALUES (1,1,1,1,1,45,now() + INTERVAL 20 minute);
INSERT INTO Commande VALUES (2,2,2,2,2,55,now() + INTERVAL 20 minute);
INSERT INTO Commande VALUES (3,3,3,3,3,75,now() + INTERVAL 20 minute);
INSERT INTO Commande VALUES (4,4,4,4,4,45,now() + INTERVAL 20 minute);

Answer 1

删除列定义后的“FOREIGN KEY”

CREATE TABLE Commande
(
id_commande int NOT NULL AUTO_INCREMENT PRIMARY KEY,
id_client int,
id_livreur int,
id_plat int ,
id_dessert int,
prix_total int,
heure_estime time,
FOREIGN KEY (id_client) REFERENCES Client(id_client),
FOREIGN KEY (id_livreur) REFERENCES Livreur(id_livreur),
FOREIGN KEY (id_plat) REFERENCES Plat(id_plat),
FOREIGN KEY (id_dessert) REFERENCES Dessert(id_dessert)
) ENGINE=InnoDB;