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这是表格:

create table Student(
    student_id char(6) primary key,
    name varchar(10) not null,
    department char(20),
    grade char(6),
    percentage smallint,
    contact_no char(12),
    address varchar(50)
 );

这就是我要插入的内容:

insert into Student
values ('ST-01','Zain','coe','A+',74,'9999777865','New Delhi');

为什么 ORA-00913:当我不插入额外值时出现太多值错误?

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