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BOOK: Beginning XML, 4th Ed ISBN: 978-0-470-11487-2
This is the forum to discuss the Wrox book Beginning XML, 4th Edition by David Hunter, Jeff Rafter, Joe Fawcett, Eric van der Vlist, Danny Ayers, Jon Duckett, Andrew Watt, Linda McKinnon; ISBN: 9780470114872
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Old April 13th, 2010, 05:47 PM
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Default How to get single result

Hi All,

This is my xml :

Code:
 
<?xml version="1.0" encoding="UTF-8"?>
<cheesEaters>
<person name="John"/>
<person name="charlie"/>
<person name="Lee"/>
<cheese name="Camembert"/>
<cheese name="Brie"/>
<liking person="John" cheese="Camembert"/>
<liking person="John" cheese="Brie"/>
<liking person="Lee" cheese="Brie"/>
</cheesEaters>
I want to write XQuery which will return only a pair of people based on there similar liking of chees. In the above case it shuld return 'John' and 'Lee'.

Below is my XQuery but I am not getting the desired result, could you please help to get the right result.

XQuery:

Code:
let $doc := doc('CheeseEaters.xml')
for $vper in $doc//person
for $xchz in $doc//cheese
for $plink in $doc//liking
where 
$vper/@name = $plink/@person and $xchz/@name=$plink/@cheese    
return
<td>
{xs:string ($vper/@name )}
</td>
I am getting the below result:

Code:
<?xml version="1.0" encoding="UTF-8"?>
<td>John</td>
<td>John</td>
<td>Lee</td>



Thanks
-Nelly
 


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