Defining a Foreign key constraint in H2 Databases

2019-04-18 06:31发布

I am new in coding so I made a tables in SQL server and it worked, so i used the same command in H2 and it said I have a syntax problems with the second table, someone can help?

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
)

The error is

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

1条回答
不美不萌又怎样
2楼-- · 2019-04-18 06:47

Two-step process

  1. Create the table without a foreign key
CREATE TABLE PLANETICKETS(
    DESTINATION VARCHAR(10) NOT NULL,
    TICKETPRICE NUMERIC(8,2) NOT NULL,
    TOURISTINFO_ID INT 
)
  1. Add the foreign key constraint
 ALTER TABLE PLANETICKETS
    ADD FOREIGN KEY (TOURISTINFO_ID) 
    REFERENCES TOURISTINFO(TOURISTINFO_ID)

One-way process

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)
)
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