Database Oracle触发器无效

我是SQL新手，我正在尝试创建一个触发器，该触发器将插入到审计表中

create or replace trigger late_ship_insert
  after insert on suborder
  for each row
declare
  employee int;
begin
  select emp_id 
    into employee
    from handles
   where order_no = :new.order_no;
  if :new.actual_ship_date > :new.req_ship_date then
    insert into ship_audit
      values (employee, :new.order_no, :new.suborder_no, :new.req_ship_date, :new.actual_ship_date);
end;

错误：

Warning: execution completed with warning
trigger late_ship_insert Compiled.

但是，一旦我尝试一个insert语句，它就会告诉我触发器不起作用，它会放弃它

Error starting at line 1 in command:
insert into suborder 
    values  ( 8, 3, '10-jun-2012', '12-jul-2012', 'CVS', 3) 
Error at Command Line:1 Column:12
Error report:
SQL Error: ORA-04098: trigger 'COMPANY.LATE_SHIP_INSERT' is invalid and failed re-validation
04098. 00000 -  "trigger '%s.%s' is invalid and failed re-validation"
*Cause:    A trigger was attempted to be retrieved for execution and was
           found to be invalid.  This also means that compilation/authorization
           failed for the trigger.
*Action:   Options are to resolve the compilation/authorization errors,
           disable the trigger, or drop the trigger.

---

如果您知道是什么原因导致了这种情况，我们将非常感谢您的帮助。谢谢

格式化代码时出现的明显错误是

IF

语句缺少

END IF

create or replace trigger late_ship_insert
  after insert on suborder
  for each row
declare
  employee int;
begin
  select emp_id 
    into employee
    from handles
   where order_no = :new.order_no;
  if :new.actual_ship_date > :new.req_ship_date then
    insert into ship_audit
      values (employee, :new.order_no, :new.suborder_no, :new.req_ship_date, :new.actual_ship_date);
  end if;
end;

一般来说，您应该始终在

INSERT

语句中列出目标表的列，而不是依赖于

INSERT

语句为每一列指定一个值并以正确的顺序指定它们。这将使您的代码更加健壮，因为例如，当有人向表中添加其他列时，代码不会变得无效。看起来是这样的（我在猜测

ship\u audit

表中的列名称）

---

创建触发器后，请执行

显示错误

，并向我们显示错误消息。如果在Oracle中找到

int

类型，我会感到惊讶。。。试试数字？我想你错过了一个

END IF另外，我认为所有声明的
变量都应该放在开头。创建触发器后：Warning:execution completed with Warning trigger late\u ship\u insert Compiled。我把int改为number，但还是一样。问题是，当我在子订单上尝试insert语句时，它会在子订单上给我第二个错误post@user1354275-假设您使用的是SQL*Plus，当您创建触发器并获得警告时，请键入
show errors
。正如@a_horse_with_no_name所述，这将向您显示您在尝试创建触发器时收到的实际错误和警告。我明白了，非常感谢您的解释，它真的很有帮助！
create or replace trigger late_ship_insert
  after insert on suborder
  for each row
declare
  employee int;
begin
  select emp_id 
    into employee
    from handles
   where order_no = :new.order_no;
  if :new.actual_ship_date > :new.req_ship_date then
    insert into ship_audit( emp_id, order_no, suborder_no, req_ship_date, actual_ship_date )
      values (employee, :new.order_no, :new.suborder_no, :new.req_ship_date, :new.actual_ship_date);
  end if;
end;