Removing duplicates in xml with xslt -

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i need remove duplicates in following xml:

<listofrowidwithlistofbooks xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/">   <rowidwithlistofbooks>     <row_id>adoa-xssk</row_id>     <listofbookinfo>       <book>         <booktype>brand</booktype>         <bookname>jon</bookname>       </book>       <book>         <booktype>brand</booktype>         <bookname>jon</bookname>       </book>     </listofbookinfo>   </rowidwithlistofbooks> </listofrowidwithlistofbooks>

can help?

this task can achieved using standard grouping solutions. not use single select statements known cause performance problems.

note reference identity.xsl include stylesheet known identity transformation template.

[xslt 1.0]

<xsl:stylesheet version="1.0"      xmlns:xsl="http://www.w3.org/1999/xsl/transform">      <xsl:key name="k-books" match="book" use="concat(booktype,'|',bookname)"/>      <xsl:include href="identity.xsl"/>      <xsl:template match="listofbookinfo">         <listofbookinfo>             <xsl:copy>                 <xsl:apply-templates select="book                 [generate-id()                 =generate-id(key('k-books',concat(booktype,'|',bookname))[1])]"/>             </xsl:copy>         </listofbookinfo>     </xsl:template>  </xsl:stylesheet>

[xslt 2.0]

<xsl:stylesheet version="2.0"      xmlns:xsl="http://www.w3.org/1999/xsl/transform">      <xsl:include href="identity.xsl"/>      <xsl:template match="listofbookinfo">         <listofbookinfo>             <xsl:for-each-group select="book"                  group-by="concat(booktype,'|',bookname)">                 <xsl:apply-templates select="."/>             </xsl:for-each-group>         </listofbookinfo>     </xsl:template>  </xsl:stylesheet>

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