Extracting Text Values from XML in SQL - sql

Question

I'm working with SQL data hosted by a 3rd party, and am trying to pull some specific information for reporting. However, some of what I need to parse out is in XML format, and I'm getting stuck. I'm looking for the syntax to pull the text= values only from the XML code.
I believe the code should something like this, but most of the examples I can find online involve simpler XML hierarchy's than what I'm dealing with.
<[columnnameXML].value('(/RelatedValueListBO/Items/RelatedValueListBOItem/text())[1]','varchar(max)')>
Fails to pull any results. I've tried declaring the spacenames as well, but again...I only ever end up with NULL values pulled.
Example XML I'm dealing with:
<RelatedValueListBO xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://tempuri.org/RelatedValueListBOSchema.xsd">
<Items>
<RelatedValueListBOItem groupKey="Response1" text="Response1" selected="true" />
<RelatedValueListBOItem groupKey="Response2" text="Response2" selected="true" />
<RelatedValueListBOItem groupKey="Response3" text="Response3" selected="true" />
</Items>
</RelatedValueListBO>
Ideally I'd like to pull response1; response2; response3 into a single column. Allowing for the fact that multiple responses may exist. I believe I'm getting stuck with the basic code I've been trying due to the namespaces associated to RelatedValueListBO and the fact that what I want is grouped in groupKey, text, and selected, instead of the value I want just being under the Items node.

Answer 1

You have the namespaces defined in your XML, so you need to define them in the XQuery too.
Fast and dirty method is to replace all namespaces with a "*":
SELECT #x.value('(/*:RelatedValueListBO/*:Items/*:RelatedValueListBOItem/#text)[1]','varchar(max)')
To get all responses in a single column you can use:
SELECT
Item.Col.value('./#text','varchar(max)') X
FROM #x.nodes('/*:RelatedValueListBO/*:Items/*:RelatedValueListBOItem') AS Item(Col)
If you need a better performance, you may need to define namespaces properly.

Answer 2

You can use something like this to extract the value of "text" in the first node of RelatedValueListBOItem
SELECT extractvalue(value(rs), '//RelatedValueListBOItem[1]/#text')
FROM TABLE (xmlsequence(extract(sys.xmltype('<RelatedValueListBO>
<Items>
<RelatedValueListBOItem groupKey="Response1" text="Response1"
selected="true" />
<RelatedValueListBOItem groupKey="Response2" text="Response2"
selected="true" />
<RelatedValueListBOItem groupKey="Response3" text="Response3"
selected="true" />
</Items>
</RelatedValueListBO>'),'/RelatedValueListBO/Items'))) rs;