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FunctX XQuery Functions

functx:distinct-attribute-names

The distinct names of all attributes in an XML fragment

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Description

The functx:distinct-attribute-names function returns the distinct set of attribute names that exist on nodes in $nodes or their descendants.

Arguments and Return Type

NameTypeDescription
$nodes node()* the root to start from
return value xs:string*

XQuery Function Declaration

See XSLT definition.
declare namespace functx = "http://www.functx.com";
declare function functx:distinct-attribute-names
  ( $nodes as node()* )  as xs:string* {

   distinct-values($nodes//@*/name(.))
 } ;

Examples

let $in-xml :=
<authors a1="xyz">
   <author a2="abc">
      <fName a3="def">Kate</fName>
      <lName>Jones</lName>
   </author>
   <author>
      <fName a3="def">John</fName>
      <lName>Doe</lName>
   </author>
</authors>
return
XQuery ExampleResults
functx:distinct-attribute-names($in-xml)
('a1', 'a2', 'a3')

See Also

functx:distinct-element-namesThe distinct names of all elements in an XML fragment

History

Published OnLast UpdatedContributor(s)
2006-06-272007-02-26Priscilla Walmsley, Datypic, pwalmsley@datypic.com, http://www.datypic.com
Datypic XQuery Services

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