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copied!<pre class="lang-xml prettyprint-override"><code><?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes"/> <xsl:key name="stat-key" match="/Data/Statistic" use="Type"/> <xsl:template match="/"> <Data> <xsl:apply-templates select="/Data/Statistic[generate-id()=generate-id(key('stat-key',Type)[1])]"> <xsl:sort select="Type"/> </xsl:apply-templates> </Data> </xsl:template> <xsl:template match="Statistic"> <xsl:copy> <xsl:copy-of select="Title|Type"/> <count> <Case> <xsl:value-of select="key('stat-key', Type)[Key='Cases']/Value"/> </Case> <Percentage> <xsl:value-of select="key('stat-key', Type)[Key='Percentage']/Value"/> </Percentage> </count> </xsl:copy> </xsl:template> </xsl:stylesheet> </code></pre> <p>It picks the <code>Title</code> of the first <code>Statistic</code> for each <code>Type</code>-group.</p> <p><strong>Output</strong></p> <pre><code><?xml version="1.0" encoding="utf-8"?> <Data> <Statistic> <Title>Total Values</Title> <Type>Type A</Type> <count> <Case>3</Case> <Percentage>75.0%</Percentage> </count> </Statistic> <Statistic> <Title>Total Values</Title> <Type>Type B</Type> <count> <Case>1</Case> <Percentage>25.0%</Percentage> </count> </Statistic> </Data> </code></pre>

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