Tag: Xml Functions

XQuery – Accessing the Attributes Axis
By Art on December 19, 2014

Working with a sequence of attributes in XQuery is fairly straight forward with the ‘attribute’ axis even if you don’t know or need to know the attribute names. By using this axis you can access all of the attributes within the given context node. The specific scenario I had was to find a particular duplicated node within the xml that […]

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Retrieving the next or previous element node value in an Xml blob using XQuery
By Art on March 13, 2013

It’s been a little while since I wrote a blog post on my favourite subject but this is from a thread on the SSC Xml forum that I was helping out on a couple of weeks ago. I’ve been a bit busy lately with a big project at work, revising/taking exam 70-461 and getting ready for the birth of my […]

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Using XQuery to remove duplicate values or duplicate nodes from an xml instance
By Art on December 31, 2012

Sometimes we need to retrieve a list distinct values from within an xml instance or even distinct nodes and this is relatively straight forward using XQuery. It gets a bit more complicated if you have attributes in the xml, but it is still possible to retrieve unique xml nodes. On the flip side, it is also possible to only return […]

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Using XQuery to transform multiple xml nodes to a single xml node with comma separated string value
By Art on July 13, 2012

Not another comma separated string blog post I hear you say! I know that this topic has probably been done to death but I hope that this is a little different as it is about creating a single xml node containing a comma separated string from the values of multiple other xml nodes all within an XQuery expression. Recently I’ve […]

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Retrieving position() value of node by using XQuery alone
By Art on December 28, 2011

You can only use the position() function within an xquery predicate and can’t use it to return the position value of the node itself, which is a shame, but a couple of good workarounds have been published. However I had a requirement (don’t ask why!) to return the position() of the node as a value within the xml itself. My […]

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FOR XML PATH using node tests in column aliases
By Art on December 15, 2011

I’ve used SQL to generate countless blobs of xml over the years and one feature that I have come to rely heavily upon is the ability to easily build complex xml structures by using column aliases in conjunction with the FOR XML PATH clause in your query. Not only do they allow for speedy creation, they also make the query […]

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