• To: "'Culshaw, James'" <james.culshaw@i...>,"'XML-Dev \(E-mail\)'" <xml-dev@l...>
• Subject: RE: XLST 'DISTINCT' Equivalent
• From: "Michael Kay" <michael.h.kay@n...>
• Date: Wed, 30 Jan 2002 09:33:04 -0000
• Importance: Normal
• In-reply-to: <D7BBB8435506D611959800A0C96B51272945EF@s...>
• Reply-to: <michael.h.kay@n...>

>
> I was wondering if there was a way of using XSLT to return a
> distinct set of
> values from an XML document?
>
> e.g.
>
> <TAG1>
>   <TAG2>John</TAG2>
>   <TAG2>Fred</TAG2>
>   <TAG2>John</TAG2>
> </TAG>
>
>
The simple way is //TAG2[not(.=preceding-sibling::TAG2)]

The more powerful, efficient, and complicated approach is Muenchian
grouping, described in all good XSLT textbooks and at
http://www.jenitennison.com/xslt/grouping

Mike Kay

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    • From: "Culshaw, James" <james.culshaw@i...>

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