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POHelp with XSLT to transform XML: grouping and selecting elements with max value
 

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  1. POHelp with XSLT to transform XML: grouping and selecting elements with max value
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    <p>I have the current XML:</p> <pre><code>&lt;DocumentElement&gt; &lt;Customer&gt; &lt;CustomerId&gt;2315&lt;/CustomerId&gt; &lt;Date&gt;2011-04-28 14:14:00&lt;/Date&gt; &lt;VersionNumber&gt;1&lt;/VersionNumber&gt; &lt;GUID&gt;2E05DE20-02A0-425D-944D-65E5E744FF8A&lt;/GUID&gt; &lt;/Customer&gt; &lt;Customer&gt; &lt;CustomerId&gt;2316&lt;/CustomerId&gt; &lt;Date&gt;2011-04-28 15:03:00&lt;/Date&gt; &lt;VersionNumber&gt;2&lt;/VersionNumber&gt; &lt;GUID&gt;2E05DE20-02A0-425D-944D-65E5E744FF8A&lt;/GUID&gt; &lt;/Customer&gt; &lt;Customer&gt; &lt;CustomerId&gt;2317&lt;/CustomerId&gt; &lt;Date&gt;2011-04-28 15:03:00&lt;/Date&gt; &lt;VersionNumber&gt;1&lt;/VersionNumber&gt; &lt;GUID&gt;9995DE20-02A0-425D-944D-65E5E744FF8A&lt;/GUID&gt; &lt;/Customer&gt; &lt;/DocumentElement&gt; </code></pre> <p>What I am trying to do is to filter out one element of each GUID with the highest version number, i.e, transform the document above to look like:</p> <pre><code>&lt;DocumentElement&gt; &lt;Customer&gt; &lt;CustomerId&gt;2316&lt;/CustomerId&gt; &lt;Date&gt;2011-04-28 15:03:00&lt;/Date&gt; &lt;VersionNumber&gt;2&lt;/VersionNumber&gt; &lt;GUID&gt;2E05DE20-02A0-425D-944D-65E5E744FF8A&lt;/GUID&gt; &lt;/Customer&gt; &lt;Customer&gt; &lt;CustomerId&gt;2317&lt;/CustomerId&gt; &lt;Date&gt;2011-04-28 15:03:00&lt;/Date&gt; &lt;VersionNumber&gt;1&lt;/VersionNumber&gt; &lt;GUID&gt;9995DE20-02A0-425D-944D-65E5E744FF8A&lt;/GUID&gt; &lt;/Customer&gt; &lt;/DocumentElement&gt; </code></pre> <p>Anyone who can point me in the right direction on where to start?</p> <p>Thanks in advance.</p>
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