Question

请通过以下触发器帮助我：

    create or replace TRIGGER "TRG_ECO"
AFTER delete OR UPDATE or INSERT ON add_tree

  referencing new as new old as old
  for each row
  declare
  var_num  number(1) :=1; 
  var_tree_type number(1);


BEGIN
        dbms_output.put_line('tRIGGER ADD CONTACT TRRIGGERED: ');



   select tree_type 
          INTO var_tree_type
          FROM master
          where seq_id = :old.add_parent;
    dbms_output.put_line('tRIGGER TRRIGGERED: ' || :new.add_parent);
   if(var_tree_type=7) then 


        select 
               CASE
                    WHEN (:new.add_parent not in (select a.seq_id  
                    from mastera)) then 0
                    WHEN (:new.add_parent in (select a.seq_id  
                    from mastera)) then 1
                    ELSE 1

            end
        into var_num
        from dual;


          UPDATE masterSET contact = var_num where seq_id = :new.add_parent;

    end if;


    dbms_output.put_line('tRIGGER TRRIGGERED: ');

END TRG_ECO;

因为当我尝试删除，插入，更新一行时，我得到一个错误，如：

错误报告 - SQL错误：ORA-01403：找不到数据 ORA-06512：在“TOADM.TRG_ECO”，第11行 ORA-04088：执行触发器'TOADM.TRG_ECO'时出错 01403. 00000 - “找不到数据” *原因：没有从对象中找到数据。 *操作：没有来自对象的数据可能是由于提取结束。经过时间：00：00：00.032

当我用

更新代码时

create or replace TRIGGER "TRG_ECO"
AFTER UPDATE or INSERT ON add_tree

我把seq_id = :new.add_parent;我的错误放在哪里：

"SQL Error: ORA-04098: trigger 'TOADM.ECO' 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."

Answer 1

当由delete语句触发时，没有：new值，同样当由insert语句触发时，没有：old值。这可能是一个问题。

PL SQL触发器无法正常运行

1 个答案: