Replacement of special characters through hex-code

Question

Hi,
I create a xml-output via SYS_XMLTYPE- and XML_ELEMENT-functions. In the coulumn values I select special XML-Characters like the ampersand will be automatically replaced through their quivalent Escape code (&) - But our special german characters (ä, ü, ö, ß) won't be replaced. Is there a function to replace them or do I have to write my own function?
Bye,
Jens

Answer 1

Hi Mark,
now I have a problem with the replacement (You must replace $ through an ampersand to understand the code, the ampersand would be automatically replaced)
The following query:
SELECT XMLELEMENT( "city", a.city,
XMLELEMENT( "company", a.company )
) AS XML_DATEN
FROM (
SELECT 'München' AS CITY, 'MCM' AS COMPANY
FROM dual
UNION
SELECT 'Hamburg' AS CITY, 'P$C' AS COMPANY
FROM dual
) a
returns
<city>Hamburg<company>P$amp;C</company></city>
<city>München<company>MCM</company></city>
Ok, that's fine. The XMLELEMENT function automatically replaces the ampersand. But the "ü" do I have to replace for myself.
But when I do it:
SELECT XMLELEMENT( "city", REPLACE( a.city, 'ü', '$#'||ASCII('ü')||';' ),
I got the following:
<city>M$amp;#252;nchen<company>MCM</company></city>
And not:
<city>M$#252;nchen<company>MCM</company></city>
How can I solve this problem?