2
当我打电话给UpdateXML()
时,我发现空节点正在转换为速记XML。有没有办法阻止UpdateXML()
以这种方式运行,也许是一个标志或设置或替代XPath表达式来告诉它保留原始结构?Oracle UpdateXML()更改XML结构?
/* Example 1 */
SELECT UpdateXML(xmlData, '/TEST/VALUE/text()', 'hello') as "Example 1"
FROM (SELECT XMLType('<TEST><VALUE>hi</VALUE></TEST>') as xmlData
FROM DUAL);
Example 1
---------
<TEST><VALUE>hello</VALUE></TEST>
/* Example 2 */
SELECT UpdateXML(xmlData, '/TEST/VALUE/text()', 'hello') as "Example 2"
FROM (SELECT XMLType('<TEST><VALUE></VALUE></TEST>') as xmlData
FROM DUAL);
Example 2
---------
<TEST><VALUE/></TEST>
我想看到什么:
/* Desired Output, vs. Example 2 */
SELECT UpdateXML(xmlData, '/TEST/VALUE/text()', 'hello') as "Desired Output"
FROM (SELECT XMLType('<TEST><VALUE></VALUE></TEST>') as xmlData
FROM DUAL);
Desired Output
--------------
<TEST><VALUE></VALUE></TEST>
有趣的方法,烨它的作品! – wweicker