SQL

Question

我想用 SQL 填充数据库，但出现语法错误。我认为问题出在PK和FK上。能否请您看一下，我的方法做错了什么。

非常感谢！

SQL代码

CREATE TABLE TheOrder
(
    ordereditem VARCHAR(50) NOT NULL PRIMARY KEY,
    productid INTEGER NOT NULL,
    productwholesaler VARCHAR (50) NOT NULL
);

INSERT INTO TheOrder VALUES
('overwatch', 1, 'blizzard'),
('deathadder', 2, 'razer'),
('xboxcontroller', 3, 'microsoft'),
('kraken', 4, 'razer'),
('diablo3', 5, 'blizzard'),
('warcraft3remastered', 6, 'blizzard'),
('fallout3', 7, 'bethesda'),
('pixel', 8, 'google'),
('aspire5', 9, 'acer'),
('destiny2', 10 ,'activision');




CREATE TABLE TheStock
(
    counteditems INTEGER NOT NULL, 
    isInStock BOOLEAN NOT NULL,
    stockID INTEGER NOT NULL PRIMARY KEY,
    fkordereditem VARCHAR,
    CONSTRAINT fkordereditem FOREIGN KEY (fkordereditem) REFERENCES TheOrder(ordereditem)
);

INSERT INTO TheStock VALUES
('overwatch', 5, true, 1),
('deathadder', 2, true, 2),
('xboxcontroller', 0, false, 3),
('kraken', 0, false, 4),
('diablo3', 5, true, 5),
('warcraft3remastered', 0, false, 6),
('fallout3', 7, true, 7),
('pixel', 8, true, 8),
('aspire5', 0, false, 9),
('destiny2', 10 , true, 10);



CREATE TABLE TheReorder
(
    fkproductid VARCHAR,
    fkproductwholesaler VARCHAR,
    howmanydays INTEGER NOT NULL, 
    mobilenumber INTEGER PRIMARY KEY,
    postcode INTEGER
    CONSTRAINT fkproductid FOREIGN KEY (fkproductid) REFERENCES TheOrder(productid),
    CONSTRAINT fkproductwholesaler FOREIGN KEY (fkproductwholesaler) REFERENCES TheOrder (productwholesaler)
);

INSERT INTO TheReorder VALUES
('overwatch', 'blizzard', 0, 649494, 1020),
('deathadder', 'razer', 0, 498494, 1150),
('xboxcontroller', 'microsoft', 3, 948849, 71000),
('kraken', 'razer', 5, 249489, 32009),
('diablo3', 'blizzard', 0, 194984, 29000),
('warcraft3remastered', 'blizzard', 12, 398484, 11000),
('fallout3', 'bethesda', 0, 694895, 42132),
('pixel', 'google', 0, 873243, 9201),
('aspire5', 'acer', 15, 988564, 10020),
('destiny2', 'activision', 0, 745637, 10090);


CREATE TABLE TheCourier
(
    couriername VARCHAR(50) NOT NULL PRIMARY KEY,
    couriercompany VARCHAR (50) NOT NULL,
    courieravailable BOOLEAN NOT NULL
);

INSERT INTO TheCourier VALUES
('jon snow', 'the wall', false),
('ned stark', 'winterfell', false),
('elon musk', 'space x', true),
('yusaku maezawa', 'zozo', false),
('hokusai katsushika', 'the great wave', false),
('ragnar lothbrok', 'vikings', false),
('jax teller', 'sons of anarchy', true),
('harvey specter', 'post', true),
('michael corleone', 'ups', false),
('tommy shelby', 'fedex', false);


CREATE TABLE ThePenaltyInfo
(
    fkhowmanydays INTEGER,
    fkproductidpen INTEGER,
    feetopay INTEGER NOT NULL,
    currencie VARCHAR(50) NOT NULL,
    penaltyid INTEGER NOT NULL PRIMARY KEY,
    CONSTRAINT fkhowmanydays FOREIGN KEY (fkhowmanydays) REFERENCES TheReorder(howmanydays),
    CONSTRAINT fkproductidpen FOREIGN KEY (fkproductidpen) REFERENCES TheOrder(productid)
);

INSERT INTO ThePenaltyInfo VALUES
(0, 1, 0, 'euro', 1),
(0, 2, 0, 'euro', 2),
(3, 3, 50, 'usd', 3),
(5, 4, 90, 'usd', 4),
(0, 5, 0, 'ron', 5),
(12, 6, 30, 'ron', 6),
(0, 7, 0, 'euro', 7),
(0, 8, 0, 'euro', 8),
(15, 9, 800, 'euro', 9),
(0, 10, 0, 'euro', 10);



CREATE TABLE TheShipementList 
(
    fkcouriercompany VARCHAR,
    fkproductidship VARCHAR,
    shipementid INTEGER NOT NULL PRIMARY KEY,
    shipementaddress VARCHAR(50) NOT NULL,
    customernumber INTEGER NOT NULL,
    CONSTRAINT fkcouriercompany FOREIGN KEY (fkcouriercompany) REFERENCES TheCourier(couriercompany),
    CONSTRAINT fkproductidship FOREIGN KEY (fkproductidship) REFERENCES TheOrder(productid)
);

INSERT INTO TheShipementList VALUES
('space x', 1, 1, 'Palma de Mallorca', 1994007),
('space x', 2, 1, 'Palma de Mallorca', 1994007),
('space x', 3, 1, 'Palma de Mallorca', 1994007),
('space x', 4, 1, 'Palma de Mallorca', 1994007),
('space x', 5, 1, 'Palma de Mallorca', 1994007),
('space x', 6, 1, 'Palma de Mallorca', 1994007),
('space x', 7, 1, 'Palma de Mallorca', 1994007),
('space x', 8, 1, 'Palma de Mallorca', 1994007),
('space x', 9, 1, 'Palma de Mallorca', 1994007),
('space x', 10, 1, 'Palma de Mallorca',1994007);

错误信息

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 ' CONSTRAINT FK FOREIGN KEY (fkordereditem) REFERENCES TheOrder(ordereditem) ' at line 6

Answer 1

我发现了错误。 FK 和引用属性的分配类型不同。

CREATE TABLE TheOrder
(
    productid INTEGER NOT NULL PRIMARY KEY,
    ordereditem VARCHAR(50) NOT NULL,
    productwholesaler VARCHAR (50) NOT NULL
);

CREATE TABLE TheStock
(
    counteditems INTEGER NOT NULL, 
    isInStock BOOLEAN NOT NULL,
    stockID INTEGER NOT NULL PRIMARY KEY,
    testid INTEGER,
    CONSTRAINT testid FOREIGN KEY (testid) REFERENCES TheOrder(productid)
);

Answer 2

您有多个问题：

你忘了在 postcode INTEGER
您忘记为某些 VARCHAR 列定义指定长度（这是强制性的，如果您不想指定长度，请使用 VARCHAR(MAX).
某些INSERT语句中的列顺序与table定义不匹配（您需要遵守顺序，或在INSERT语句中指定列名）
您正在尝试设置引用非主键的外键，如果您想这样做，您需要将引用的列定义为 UNIQUE
您似乎在尝试为某些主键值插入重复值
您引用的外键数据类型与您的列不同

SQL - 语法错误（PK 和 FK 问题）

SQL - Syntax Error (Problems with PK and FK)

foreign-keys

derby

syntax-error

primary-key

SQL代码

错误信息