在Oracle中的CLOB列中更新xml标记 [英] Update xml tag in a CLOB column in Oracle

问题描述

我在Oracle 11g的CLOB列中有此xml值:

I have this xml value in a CLOB column in Oracle 11g:

<Energy xmlns="http://euroconsumers.org/notifications/2009/01/notification">    
    <Gender>M</Gender>
    <FirstName>MAR</FirstName>
    <Name>VAN HALL</Name>
    <Email/><Telephone>000000000</Telephone>
    <InsertDate>2013-10-09</InsertDate>
</Energy>

我想为几行更新InserDate的值.

I want to update the value of InserDate for several rows.

我正在使用下面的sql命令:

I was using next below sql command:

update tmp_tab_noemail_test p1 
set p1.sce_msg = updatexml(xmltype(p1.sce_msg),
                 '//Energy/InsertDate/text()','Not Valid').getClobVal()

但是不起作用.

您是否有一些想法只能修改InsertDate的xml标记的值?

Do you have some ideas to modify only the values of the xml tag of InsertDate?

预先感谢

推荐答案

您在顶级Energy节点中有一个名称空间，因此如果没有，则无法匹配. UPDATEXML文档显示您可以选择提供名称空间字符串

You have a namespace in your top-level Energy node, so you aren't matching without; the UPDATEXML documentation shows you can optionally supply a namespace string.

因此，您可以使用示例数据来做到这一点:

So you can do this, using your example data:

create table tmp_tab_noemail_test (sce_msg clob);
insert into tmp_tab_noemail_test values (
'<Energy xmlns="http://euroconsumers.org/notifications/2009/01/notification">    
    <Gender>M</Gender>
    <FirstName>MAR</FirstName>
    <Name>VAN HALL</Name>
    <Email/><Telephone>000000000</Telephone>
    <InsertDate>2013-10-09</InsertDate>
</Energy>');

update tmp_tab_noemail_test p1 
set p1.sce_msg = updatexml(xmltype(p1.sce_msg),
  '/Energy/InsertDate/text()','Not Valid',
  'xmlns="http://euroconsumers.org/notifications/2009/01/notification"').getClobVal();

之后您将得到:

select sce_msg from tmp_tab_noemail_test;

SCE_MSG                                                                         
--------------------------------------------------------------------------------
<Energy xmlns="http://euroconsumers.org/notifications/2009/01/notification"><Gender>M</Gender><FirstName>MAR</FirstName><Name>VAN HALL</Name><Email/><Telephone>000000000</Telephone><InsertDate>Not Valid</InsertDate></Energy>

或者滚动较少:

select XMLQuery('//*:InsertDate' passing XMLType(sce_msg) returning content) as insertdate
from tmp_tab_noemail_test;

INSERTDATE                                                                      
--------------------------------------------------------------------------------
<InsertDate xmlns="http://euroconsumers.org/notifications/2009/01/notification">Not Valid</InsertDate>

---

您还可以通配更新:

---

You could also wildcard the update:

update tmp_tab_noemail_test p1 
set p1.sce_msg = updatexml(xmltype(p1.sce_msg),
  '/*:Energy/*:InsertDate/text()','Not Valid').getClobVal();

...但是最好指定名称空间.

... but it's probably better to specify the namespace.

这篇关于在Oracle中的CLOB列中更新xml标记的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！