Oracle10g ORA-00904无效的标识符代码

请帮我输入这个代码。我试图创建一个表，但它不断弹出错误ORA-00904:：无效标识符

CREATE TABLE tblParentMaster
    ( HOHCodeid VARCHAR2(10),
    Parent1 VARCHAR2(10),
    Address VARCHAR2(30),
    Home_Phone_Number CHAR(10),
    Address1 VARCHAR2(30),
    City VARCHAR2(20),
    States CHAR(2),
    Zip CHAR(5),
    Parent2Code VARCHAR2(10),
    Parent2 VARCHAR2(10),
    Address2 VARCHAR2(30),
    Volunteer CHAR(1) DEFAULT 'N',
    Email VARCHAR2(20),
        CONSTRAINT pk_tblParentMaster_HOHCode PRIMARY KEY (HOHCode),
        CONSTRAINT nn_tblParentMaster_Parent1 NOT NULL (Parent1),
        CONSTRAINT ck_tblParentMaster_Volunteer CHECK (Volunteer IN ('Y', 'N'))
);

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这不是声明NOTNULL约束的方式。您可以使用命名约束，如下所示：

或者在行中声明，这将不会有一个好的名称：

...
Parent1 VARCHAR2(10) NOT NULL,
...

您的PK也是错误的，您没有名为just HOHCode的列：

CONSTRAINT pk_tblParentMaster_HOHCode PRIMARY KEY (HOHCodeId),

因此：

CONSTRAINT pk_tblParentMaster_HOHCode PRIMARY KEY (HOHCodeId),

CREATE TABLE tblParentMaster
    ( HOHCodeid VARCHAR2(10),
    Parent1 VARCHAR2(10),
    Address VARCHAR2(30),
    Home_Phone_Number CHAR(10),
    Address1 VARCHAR2(30),
    City VARCHAR2(20),
    States CHAR(2),
    Zip CHAR(5),
    Parent2Code VARCHAR2(10),
    Parent2 VARCHAR2(10),
    Address2 VARCHAR2(30),
    Volunteer CHAR(1) DEFAULT 'N',
    Email VARCHAR2(20),
        CONSTRAINT pk_tblParentMaster_HOHCode PRIMARY KEY (HOHCodeId),
        CONSTRAINT nn_tblParentMaster_Parent1 CHECK (Parent1 is NOT NULL),
        CONSTRAINT ck_tblParentMaster_Volunteer CHECK (Volunteer IN ('Y', 'N'))
);

table TBLPARENTMASTER created.