Dynamic XPath Creation in SQL Server - xpath

Question

I have an XML and I want to get the Xml Node values dynamically. I want to Pass the Node Name and the in return the function or SP should return me the value of that Node.
<ClassificationTypeEntity>
<LTABLE_ID>3170</LTABLE_ID>
<LTABLE_CODE>script Code</LTABLE_CODE>
<LTABLE_DESC>alert(''hello'')</LTABLE_DESC>
<ACTIVE_YES_NO>1</ACTIVE_YES_NO>enter code here
<PRIVATE_FILING>0</PRIVATE_FILING>
<RETENTION_CODE /><RETENTION_TITLE />
<LTABLE_ID_P>0</LTABLE_ID_P>
</ClassificationTypeEntity>;
For Example, In the above xml, when I want the value of LTABLE_CODE Node, I will pass the same and the result should I get is
script code
Same for LTABLE_DESC the result should be alert(''hello'')
However I can write the 2 Xpath query for both but in case my schema gets changed (more properties added or removed) then I will have to change my SP also.
Thanks,
Mohit Jain

Answer 1

Thanks for your replies.
I have found the solution:
declare #xmlData xml, #NodeName VarChar(500), #nodeValue VarChar(500)
Set #NodeName = 'LTABLE_CODE';
--Set #NodeName = 'LTABLE_DESC';
set #xmlData =
'<ClassificationTypeEntity xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<LTABLE_ID>3170</LTABLE_ID>
<LTABLE_CODE><script>al</LTABLE_CODE>
<LTABLE_DESC><script>alert(''hello'')</script></LTABLE_DESC>
<ACTIVE_YES_NO>1</ACTIVE_YES_NO>
<PRIVATE_FILING>0</PRIVATE_FILING>
<RETENTION_CODE /><RETENTION_TITLE />
<LTABLE_ID_P>0</LTABLE_ID_P>
</ClassificationTypeEntity>'
SET #nodeValue = #xmlData.value('(/ClassificationTypeEntity/*[local-name()=sql:variable("#NodeName")])[1]','nvarchar(max)')
SELECT #nodeValue