xml-dev - RE: [xml-dev] XLST 'DISTINCT' Equivalent

RE: [xml-dev] XLST 'DISTINCT' Equivalent

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To: "'Culshaw, James'" <james.culshaw@intel.com>,"'XML-Dev \(E-mail\)'" <xml-dev@lists.xml.org>
Subject: RE: [xml-dev] XLST 'DISTINCT' Equivalent
From: "Michael Kay" <michael.h.kay@ntlworld.com>
Date: Wed, 30 Jan 2002 09:33:04 -0000
Importance: Normal
In-reply-to: <D7BBB8435506D611959800A0C96B51272945EF@swsmsx32.isw.intel.com>
Reply-to: <michael.h.kay@ntlworld.com>

>
> 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

Follow-Ups:
- Re: [xml-dev] XLST 'DISTINCT' Equivalent
  - From: "Steve Muench" <Steve.Muench@oracle.com>

References:
- XLST 'DISTINCT' Equivalent
  - From: "Culshaw, James" <james.culshaw@intel.com>

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