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Hi,
I have an XML document with the following structure: <inventory>
<row>
<hostmame>AA</hostname>
<serial>A</serial>
</row>
<row>
<hostmame>BB</hostname>
<serial>B</serial>
</row>
<row>
...
</row>
</inventory>I defined a key such as: <xsl:key name="systems" match="/inventory/row/serial" use="."/> How do I count the number of elements in the key "systems" seeing that several row could have the same "serial" value ? The purpose being to compute the number of unique serial values found in the XML document... Thanks beforehand, Michael
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