xquery-functions-related-to-qnames-namespace-uri-from-qname

          namespace-uri-from-QName($arg as xs:QName?) as xs:string?
        

Returns a string representing the namespace uri of the QName specified by

$arg. The result is

the empty sequence if

$arg

is the empty sequence.

$arg

Is the QName whose namespace URI is returned.

This topic provides XQuery examples against XML instances that are stored in various

type

columns in the AdventureWorks database.

For a working sample, see

local-name-from-QName (XQuery).

These are the limitations:

The

function returns instances of xs:string instead of

xs:anyURI.

Functions Related to QNames (XQuery)

namespace-uri-from-QName($arg as xs:QName?) as xs:string?