有名称空间时的UPDATEXML

Question

我必须更新XML的值：

<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" 
                  xmlns:o="urn:schemas-microsoft-com:office:office" 
                  xmlns:x="urn:schemas-microsoft-com:office:excel" 
                  xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
                  xmlns:html="http://www.w3.org/TR/REC-html40">
            <DocumentProperties xmlns="urn:schemas-microsoft-com:office:office">
                <Author>XXXXXX</Author>
                <LastAuthor>UCB User</LastAuthor>
                <Created>2019-10-31T13:04:09Z</Created>
                <Version>14.00</Version>
            </DocumentProperties>
            <a>5</a>
        </Workbook>

在我的情况下，该XML在表tt字段xml_val中。

目标XPath为/ Workbook / DocumentProperties / Created，其值为2019-10-31T13：04：09Z，必须替换为2020-01-08。

我绑定了此代码：

select UPDATEXML(xml_val,
   '/Workbook/DocumentProperties/Created/text()','2020-01-08',
    'xmlns="urn:schemas-microsoft-com:office:spreadsheet" 
              xmlns:o="urn:schemas-microsoft-com:office:office" 
              xmlns:x="urn:schemas-microsoft-com:office:excel" 
              xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
              xmlns:html="http://www.w3.org/TR/REC-html40"').getClobVal() as last
from tt;

//。getClobVal（）最后是因为ORA-21500：内部错误代码，参数：[％s]，[％s]，[％s]，[％s]，[％s]， [％s]，[％s]，[％s]（[here）

上面的代码没有任何改变。我觉得这是因为在[[DocumentProperties标记中声明了另一个名称空间。但是我不知道如何在UPDATEXML子句中声明名称空间。

当我尝试使用此代码更新

/ Workbook / a

中的值时，它可以正常工作：

select UPDATEXML(xml_val,
   '/Workbook/a/text()',2020-01-08,
    'xmlns="urn:schemas-microsoft-com:office:spreadsheet" 
              xmlns:o="urn:schemas-microsoft-com:office:office" 
              xmlns:x="urn:schemas-microsoft-com:office:excel" 
              xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
              xmlns:html="http://www.w3.org/TR/REC-html40"').getClobVal() as last
from tt;

我尝试过但不起作用的不同名称空间组合：
-1
xmlns="urn:schemas-microsoft-com:office:spreadsheet" 
xmlns:o="urn:schemas-microsoft-com:office:office" 
xmlns:x="urn:schemas-microsoft-com:office:excel" 
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
xmlns:html="http://www.w3.org/TR/REC-html40"

-2
xmlns="urn:schemas-microsoft-com:office:office"
xmlns:o="urn:schemas-microsoft-com:office:office" 
xmlns:x="urn:schemas-microsoft-com:office:excel" 
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
xmlns:html="http://www.w3.org/TR/REC-html40"

-3
xmlns="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel" 
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
xmlns:html="http://www.w3.org/TR/REC-html40"

-4
xmlns="urn:schemas-microsoft-com:office:office"

注意：我无法在DocumentProperties标记中删除名称空间声明，因为此XML来自Excel-XML格式文件

Answer 1

DocumentProperties元素及其子元素位于具有快捷方式urn:schemas-microsoft-com:office:office的名称空间o中；您需要在Xpath中为这些元素添加名称空间前缀：

SELECT UPDATEXML(
         xml_val,
         '/Workbook/o:DocumentProperties/o:Created/text()',
         '2020-01-08',
         'xmlns="urn:schemas-microsoft-com:office:spreadsheet" 
          xmlns:o="urn:schemas-microsoft-com:office:office" 
          xmlns:x="urn:schemas-microsoft-com:office:excel" 
          xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" 
          xmlns:html="http://www.w3.org/TR/REC-html40"'
       ) AS updated_xml
FROM   tt;

| UPDATED_XML || ：------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ------------------------------ ||    XXXXXX  Author>  UCB用户 LastAuthor>  2020-01-08  Created>  14.00  Version>  DocumentProperties> < a> 5   Workbook> |

db <>小提琴here
但是，UPDATEXML已过时，应使用XMLQUERY：
SELECT XMLQuery(
         'declare default element namespace "urn:schemas-microsoft-com:office:spreadsheet"; (: :)
          declare namespace o = "urn:schemas-microsoft-com:office:office"; (: :)
          copy $i := $x modify 
          ( for $j in $i/Workbook/o:DocumentProperties/o:Created
            return replace value of node $j with $v )
          return $i'
         PASSING xml_val AS "x",
                 '2020-01-08' AS "v"
         RETURNING CONTENT
       ) AS updated_xml
FROM   tt

db <>小提琴here