ORA-00907:缺少右括号

Question

CREATE TABLE Persons (
  P_Id int NOT NULL,
  LastName varchar(255) NOT NULL,
  FirstName varchar(255),
  PRIMARY KEY (P_Id)
)

CREATE TABLE Orders (
  O_Id int NOT NULL PRIMARY KEY,
  OrderNo int NOT NULL,
  P_Id int FOREIGN KEY REFERENCES Persons(P_Id)
)

我在创建表格订单时遇到错误:

ORA-00907:缺少右括号

Answer 1

如果要使用列定义内联定义外键,则不应指定FOREIGN KEY.从定义中删除它.

试试这个:

CREATE TABLE Orders 
( 
  O_Id int NOT NULL PRIMARY KEY, 
  OrderNo int NOT NULL,
  P_Id int REFERENCES Persons(P_Id)
)