sql - 在 H2 数据库中定义外键约束

Question

我是编码方面的新手，所以我在 SQL Server 中创建了一个表并且它起作用了，所以我在 H2 中使用了相同的命令，它说我的第二个表有语法问题，有人可以帮忙吗？

CREATE TABLE TOURISTINFO(
TOURISTINFO_ID INT PRIMARY KEY,
NAME VARCHAR(25) NOT NULL,
NATIONALITY VARCHAR(15) NOT NULL
)

CREATE TABLE PLANETICKETS(
DESTINATION VARCHAR(10) NOT NULL,
TICKETPRICE NUMERIC(8,2) NOT NULL,
TOURISTINFO_ID INT FOREIGN KEY REFERENCES TOURISTINFO
)

错误是

Syntax error in SQL statement "CREATE TABLE PLANETICKETS( 
DESTINATION VARCHAR(10) NOT NULL, 
TICKETPRICE NUMERIC(8,2) NOT NULL, 
TOURISTINFO_ID INT FOREIGN[*] KEY REFERENCES TOURISTINFO 
)"; expected "(, FOR, UNSIGNED, NOT, NULL, AS, DEFAULT, GENERATED, NOT, NULL, AUTO_INCREMENT, BIGSERIAL, SERIAL, IDENTITY, NULL_TO_DEFAULT, SEQUENCE, SELECTIVITY, COMMENT, CONSTRAINT, PRIMARY, UNIQUE, NOT, NULL, CHECK, REFERENCES, ,, )"; SQL statement:
CREATE TABLE PLANETICKETS( 
DESTINATION VARCHAR(10) NOT NULL, 
TICKETPRICE NUMERIC(8,2) NOT NULL, 
TOURISTINFO_ID INT FOREIGN KEY REFERENCES TOURISTINFO 
) [42001-173] 42001/42001

Answer 1

两步过程

1. 创建没有外键的表

CREATE TABLE PLANETICKETS(
    DESTINATION VARCHAR(10) NOT NULL,
    TICKETPRICE NUMERIC(8,2) NOT NULL,
    TOURISTINFO_ID INT 
)

1. 添加外键约束

 ALTER TABLE PLANETICKETS
    ADD FOREIGN KEY (TOURISTINFO_ID) 
    REFERENCES TOURISTINFO(TOURISTINFO_ID)

一步法

CREATE TABLE PLANETICKETS(
  DESTINATION VARCHAR(10) NOT NULL,
  TICKETPRICE NUMERIC(8,2) NOT NULL,
  TOURISTINFO_ID INT,
  foreign key (TOURISTINFO_ID) references touristinfo(TOURISTINFO_ID)
)