RE: distinct-values( ) appears to return empty for any sequence of nodes.

distinct-values() atomizes the nodes supplied in the input sequence and
returns the set of distinct atomic values that appear in these nodes. The
result of atomizing (<one/>,<one/>,<two/>) is an empty sequence (because
each of the nodes is an empty element), and therefore the result of
distinct-values() is also an empty sequence.

What result did you expect?

Michael Kay
http://www.saxonica.com/ 

> -----Original Message-----
> From: saxon-help-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@xxxxxxxxxxxxxxxx 
> [mailto:saxon-help-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@xxxxxxxxxxxxxxxx] 
> On Behalf Of 
> Benjamin Jones
> Sent: 16 June 2005 21:07
> To: saxon-help-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@xxxxxxxxxxxxxxxx
> Subject: [saxon] distinct-values( ) appears to return empty 
> for any sequence of nodes.
> 
> I have a problem with distinct-values using Saxon 8.4
> 
> If I run the following XQuery:
> ----------------begin XQuery ----------------
> let $x:=(<one/>,<one/>,<two/>)
> let $y:=(1,1,2)
> return
> <answers>
> <nodeDistinct>{distinct-values($x)}</nodeDistinct>   
> <valueDistinct>{distinct-values($y)}</valueDistinct>
> </answers>
> -------------- end XQuery ----------------
> 
> I get the result
> --------------begin Result  ------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <answers>
>       <nodeDistinct/>
>       <valueDistinct>1 2</valueDistinct>
> </answers>
> --------------end Result --------------------------
> 
> It seems that distinct-values fails silently on any sequence 
> of nodes.  
> Am I missing something
> in the spec for XQuery 1.0 that forbids using a sequence containing 
> nodes of type element or document?
> 
> Thanks,
> 
> Ben
> 
> 
> 
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