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a. 触发按组别分列的栏目加入新的表格
原标题:trigger to concatenate column by group into new table

我有一个触发因素,即表格的一栏以粗略标明,并插入新的表格。 在更新后,如表A中弹ins、火.,将按id和 con栏分类,并插入表B。

问题是,当触发火灾时,Oracle投下了例外表格。 这是因为触发点处理:

delete from tableb where id = :id;
insert into tablea (id, col1)
select id, wm_concat(col1) from tablea group by id

我如何利用触发因素确定这一点? (不使用所储存的程序,并且希望避免使用预定的任务)。

最佳回答

"How do I fix this using triggers? (cannot use stored procedure and would like to avoid using a scheduled task)."

没有任何办法利用公正的触发因素来做到这一点。

你可以不使用浏览量触发点,因为正如你发现的那样,选择会 throw上表的例外。

你可以使用表级触发器,因为我们可以参考:NEW或:OLD的数值。

有可能将电离层或电离层电离层的数值通过在电流层中填入一个名称空间变量,将电离层或电离层的数值推向表级,但环境需要一种储存程序,你说,这种程序可以产生。

表格如何? 是否允许你设立一个表格,以通过受影响的身份证?

但是,执行新产生的功能只是大量间接费用。 ORA-04091例外几乎总是表明数据模型存在缺陷,这当然似乎是这种情况。

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