Oracle：无法更改此触发器类的New值

for each row begin if updating then if :new.app_hardware = 0 and :old.app_hardware = 1 then :new.app_1_dept := ‘‘; :new.app_1_mgr1 := ‘‘; :new.app_1_summary := ‘‘; :new.app_1_engineer1 := ‘‘; :new.app_1_engineer2 := ‘‘; :new.app_1_engineer3 := ‘‘; delete from appd6_det where appd6_flow = :old.app_flow; end if; end if; end tri_app1_mstr_upd; View Code

修改后：

create or replace trigger tri_app1_mstr_upd before update on app1_mstr
for each row
begin
  if updating then
    if :new.app_hardware = 0 and :old.app_hardware = 1 then
      :new.app_1_dept      := ‘‘;
      :new.app_1_mgr1      := ‘‘;
      :new.app_1_summary   := ‘‘;
      :new.app_1_engineer1 := ‘‘;
      :new.app_1_engineer2 := ‘‘;
      :new.app_1_engineer3 := ‘‘;
      
      delete from appd6_det where appd6_flow = :old.app_flow;
    end if;
    
    if :new.app_structure = 0 and :old.app_structure = 1 then
      :new.app_2_dept       :=‘‘;
      :new.app_2_mgr1       :=‘‘;
      :new.app_2_summary    :=‘‘;
      :new.app_2_engineer1  :=‘‘;
      :new.app_2_engineer2  :=‘‘;
      :new.app_2_engineer3  :=‘‘;
      
      delete from appd7_det where appd7_flow = :old.app_flow;
    end if;
    
    if :new.app_software = 0 and :old.app_software = :old.app_flow then
      :new.app_3_dept       :=‘‘;
      :new.app_3_mgr1       :=‘‘;
      :new.app_3_summary    :=‘‘;
      :new.app_3_engineer1  :=‘‘;
      :new.app_3_engineer2  :=‘‘;
      :new.app_3_engineer3  :=‘‘;
      
      delete from appd8_det where appd8_flow = :old.app_flow;
    end if;
    
    if :new.app_other = 0 and :old.app_other = 1 then
      :new.app_4_dept       :=‘‘;
      :new.app_4_mgr1       :=‘‘;
      :new.app_4_summary    :=‘‘;
      :new.app_4_engineer1  :=‘‘;
      :new.app_4_engineer2  :=‘‘;
      :new.app_4_engineer3  :=‘‘;
      
      delete from appd9_det where appd9_flow = :old.app_flow;
    end if;
    
    if :new.app_module = 0 and :old.app_module = 1 then
      :new.app_5_dept       :=‘‘;
      :new.app_5_mgr1       :=‘‘;
      :new.app_5_summary    :=‘‘;
      :new.app_5_engineer1  :=‘‘;
      :new.app_5_engineer2  :=‘‘;
      :new.app_5_engineer3  :=‘‘;
      
      delete from appd12_det where appd12_flow = :old.app_flow;
    end if;    
  end if; 
end tri_app1_mstr_upd;

View Code

 

Oracle：无法更改此触发器类的New值

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