如何创建 XML

Question

Let's suppose that I want to generate a part of the XML extracting data from a table and put this part inside the [CDATA element.

For example, let's suppose that I generate this XML

select    xmlelement("TAG1",
          xmlelement("TAG2",col2),
          xmlelement("TAG3",
          xmlelement("TAG4",col4)))
from MYTABLE

where col2 and col4 are columns of MYTABLE

so as to get the follow XML:

<TAG1>
 <TAG2> 10 </TAG2>
 <TAG3>
  <TAG4> England </TAG4>
 </TAG3>
</TAG1>

But now let's suppose I want to get something like this:

<TAG1>
 <TAG2> 10 </TAG2>
 <![CDATA[<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <TAG3>
  <TAG4> England </TAG4>
 </TAG3> ]]>
</TAG1>

how can I do it? What I mean is even in this case I want the part inside the CDATA to be created not with constant long string but alway extracting data from the table and I want this section closed after TAG3

Answer 1

Let's suppose that I want to generate a part of the XML extracting data from a table and put this part inside the [CDATA element.

For example, let's suppose that I generate this XML

select    xmlelement("TAG1",
          xmlelement("TAG2",col2),
          xmlelement("TAG3",
          xmlelement("TAG4",col4)))
from MYTABLE

where col2 and col4 are columns of MYTABLE

so as to get the follow XML:

<TAG1>
 <TAG2> 10 </TAG2>
 <TAG3>
  <TAG4> England </TAG4>
 </TAG3>
</TAG1>

But now let's suppose I want to get something like this:

<TAG1>
 <TAG2> 10 </TAG2>
 <![CDATA[<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <TAG3>
  <TAG4> England </TAG4>
 </TAG3> ]]>
</TAG1>

how can I do it? What I mean is even in this case I want the part inside the CDATA to be created not with constant long string but alway extracting data from the table and I want this section closed after TAG3