写一个触发器,触发添加、删除、修改事件啊!
create or replace trigger trigger_name
after delete on 1
for each row
begin
delete from 2 where 2.column=:old.column;
end;
create or replace trigger trigger_name
after delete on 1
for each row
begin
delete from 2 where 2.column=:old.column;
end;
解决方案 »
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