ORA-00907: missing right parenthesis

问题:

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)
)

I am getting an error while creating Table Orders:

ORA-00907: missing right parenthesis

回答1:

If you are defining a foreign key inline with column definition then you shouldn't specify FOREIGN KEY. Drop it from the definition.

Try this:

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