相关疑难解决方法(0)

我有两张桌子

 batch (batch_id,start_date,end_date,batch_strength,is_locked)
 sem (user_id,is_active,no_of_days)

我已经执行了下面给出的触发器过程,然后使用查询更新表

CREATE OR REPLACE FUNCTION em_batch_update()
  RETURNS trigger AS $em_sem_batch$
BEGIN

UPDATE batch set is_locked='TRUE'
where (start_date
       + (select no_of_days from sem
          WHERE is_active='TRUE' and user_id='OSEM')
      ) <= current_date;

return NEW;

END;
$em_sem_batch$  LANGUAGE plpgsql;

CREATE TRIGGER em_sem_batch
BEFORE UPDATE ON batch FOR EACH ROW EXECUTE PROCEDURE em_batch_update();

update em_batch set batch_strength=20 where batch_id='OD001C001B3';

发生了错误:

错误:超出堆栈深度限制
提示:确保平台的堆栈深度限制足够后,增加配置参数"max_stack_depth"(当前为2048kB).