Oracle 删除客户的过程

我有以下步骤，应该删除特定客户。我不断地犯错误，我不知道为什么。我是新来的，这是一个班级作业

提前感谢您的帮助：

CREATE or REPLACE PROCEDURE DISP_CUST_DELETE (I_CUSTOMER_NUM IN CUSTOMER_NUM&TYPE)

BEGIN 
    DELETE
    FROM  CUSTOMER
    WHERE CUSTOMER_NUM = I_CUSTOMER_NUM;

    dbms_output.put_line('Customer has been deleted');

EXCEPTION
    WHEN NO_DATA_FOUND THEN
        dbms_output.put_line('NO CUSTOMER WITH this number has been deleted');
END;
/

这里有一些更新。
是的，对不起，这就是我的意思。以下是更新的程序

CREATE or REPLACE PROCEDURE DISP_CUST_DELETE (I_CUSTOMER_NUM IN CUSTOMER.CUSTOMER_NUM) AS

BEGIN 
    DELETE
    FROM CUSTOMER
    WHERE CUSTOMER_NUM = I_CUSTOMER_NUM;

    dbms_output.put_line('Customer' || I_CUSTOMER_NUM ||'has been deleted');

EXCEPTION
    WHEN NO_DATA_FOUND THEN
        dbms_output.put_line('NO CUSTOMER WITH'||I_CUSTOMER_NUM||'has been deleted');
END;
/

下面是我得到的错误：

0/0 PL/SQL:编译单元分析已于1/47终止
PLS-00488:“CUSTOMER.CUSTOMER_NUM”必须是一个类型

---

就像注释中建议的

@sticky bit

，您的代码有语法错误。 为了将变量声明为与先前声明的变量或表列相同的类型，应使用

table.table\u column%type

CREATE or REPLACE PROCEDURE DISP_CUST_DELETE (
    I_CUSTOMER_NUM IN CUSTOMER.CUSTOMER_NUM%TYPE   --> This line here
) AS

BEGIN 
    DELETE
    FROM CUSTOMER
    WHERE CUSTOMER_NUM = I_CUSTOMER_NUM;

    dbms_output.put_line('Customer' || I_CUSTOMER_NUM ||'has been deleted');

    EXCEPTION
        WHEN NO_DATA_FOUND THEN
            dbms_output.put_line('NO CUSTOMER WITH'||I_CUSTOMER_NUM||'has been deleted');
END;
/

---

就像注释中建议的

@sticky bit

，您的代码有语法错误。 为了将变量声明为与先前声明的变量或表列相同的类型，应使用

table.table\u column%type

CREATE or REPLACE PROCEDURE DISP_CUST_DELETE (
    I_CUSTOMER_NUM IN CUSTOMER.CUSTOMER_NUM%TYPE   --> This line here
) AS

BEGIN 
    DELETE
    FROM CUSTOMER
    WHERE CUSTOMER_NUM = I_CUSTOMER_NUM;

    dbms_output.put_line('Customer' || I_CUSTOMER_NUM ||'has been deleted');

    EXCEPTION
        WHEN NO_DATA_FOUND THEN
            dbms_output.put_line('NO CUSTOMER WITH'||I_CUSTOMER_NUM||'has been deleted');
END;
/

---

您遇到了什么错误？您所说的

CUSTOMER\u NUM&TYPE

可能是指

CUSTOMER.CUSTOMER\u NUM%TYPE

？请更新问题，不要在其他评论中。注释未格式化。现在您只有

CUSTOMER.CUSTOMER\u NUM

而不是

CUSTOMER.CUSTOMER\u NUM%TYPE

。在末尾添加

%TYPE

…非常感谢，我使用了&而不是%。现在它起作用了。你们都很棒，特别是有点粘。你们都犯了什么错误？你们说的

CUSTOMER\u NUM&TYPE

可能是指

CUSTOMER.CUSTOMER\u NUM%TYPE

？请更新问题，不要在其他评论中。注释未格式化。现在您只有

CUSTOMER.CUSTOMER\u NUM

而不是

CUSTOMER.CUSTOMER\u NUM%TYPE

。在末尾添加

%TYPE

…非常感谢，我使用了&而不是%。现在它起作用了。你们都很棒，特别是有点粘。