Question

我正在尝试创建一个触发器，用于记录审计表中表的任何删除

触发器如下所示：

create or replace TRIGGER cusdelete
AFTER
DELETE OR UPDATE
ON CUSTOMER
DECLARE
v_username varchar2(10);

BEGIN
SELECT V('APP_USER')
INTO v_username
FROM dual;

-- Insert record into audit table
INSERT INTO cusudit
( CUSTOMER_id,
country,
first_name,
last_name,
birth_date,
address,)
VALUES
(old.CUSTOMER_id,
old.country,
old.first_name,
old.last_name,
old.birth_date,
old.address,
sysdate,
v_username );

END;

然而，当我尝试保存并编译它时，我收到以下消息：

*Compilation failed, line 20 (15:29:04) The line numbers associated with compilation errors are relative to the first BEGIN statement. 
    This only affects the compilation of database triggers.

PLS-00049: bad bind variable 'OLD.QUANTITY'Compilation failed, line 21 (15:29:04) 
    The line numbers associated with compilation errors are relative to the first BEGIN statement. 
    This only affects the compilation of database triggers.

PLS-00049: bad bind variable 'OLD.COST_PER_ITEM'Compilation failed, line 22 (15:29:04)
    The line numbers associated with compilation errors are relative to the first BEGIN statement. 
    This only affects the compilation of database triggers.
PLS-00049: bad bind variable 'OLD.TOTAL_COST'*

Answer 1

与编译错误相关联的“行号是相对的”文本只是告诉您从BEGIN语句开始而不是从create or replace trigger开始计算行。

真正的问题是Quantity表中不存在列Cost_Per_Item，Total_Cost和Customer。它们看起来不像客户类型的价值;他们在另一张桌子上吗？请注意，:old.CUSTOMER_id引用不会导致错误。

附录：另外，请参阅下面的评论，其中@AlexPoole指出要插入的表格是orders_audit，这可能意味着触发器是针对{{1表而不是Orders表。

Answer 2

你可以使用oracle audit

audit delete on customer

并查询审计跟踪表

select * from dba_audit_trail

PL / SQL触发器编译错误与第一个BEGIN语句有关

2 个答案: