sql - SQL - ORA-00911 我插入的字符无效

Question

使用 Oracle Live SQL。无论我做什么，我都会得到 ORA-00911（无效字符）。我的代码哪里出错了？

我尝试过以多种方式更改值，包括更改数据类型。

CREATE TABLE Books
(Title varchar(25) NOT NULL,
Author varchar(25) NOT NULL,
PRIMARY KEY (title)
);
INSERT INTO Books (title, author)
VALUES (‘To Kill a Mockingbird’, ‘Harper Lee’);
INSERT INTO Books (title, author)
VALUES (‘The Great Gatsby’, ‘F. Scott Fitzgerald’);
INSERT INTO Books (title, author)
VALUES (‘Dante’s Inferno’, ‘Dante Alighieri’);
INSERT INTO Books (title, author)
VALUES (‘Harry Potter and the Sorcerer’s Stone’, ‘J.K. Rowling’);
INSERT INTO Books (title, author)
VALUES (‘The Hobbit’, ‘J. R. R. Tolkien’);

Answer 1