Using Sum and Count

[Wei, Alice J.]

Hi,

  Thanks for the replies. Returning to your question, what I want is something simple. That is,  to compute how many "nodes" there are in the XML to express how many child occurrences are from the parent.

  The result I have computed before your configurations show individual numbers of the occurrences of the nodes, which is "1". Instead of seeing "1" line after line, I only want to see one line that tells me how many occurrences are there from the XML without printing the rest of the stuff in the code.

   Is this possible?

Thanks to those who can help.
======================================================
Alice Wei
MIS 2008
School of Library and Information Science
Indiana University Bloomington
http://x-query.com/mailman/listinfo/talk
________________________________________
From: David Carlisle [http://x-query.com/mailman/listinfo/talk]
Sent: Tuesday, January 15, 2008 6:25 PM
To: Wei, Alice J.
Cc: http://x-query.com/mailman/listinfo/talk
Subject: Re:  Using Sum and Count

If I understand your requirement you just want
<statistics>{
count(doc("http://chausie.slis.indiana.edu:8080/exist/rest//db/resume/resume.xml")//projection)
}</statistics>
no need for a FLWR clause here.



for $project in
doc("http://chausie.slis.indiana.edu:8080/exist/rest//db/resume/resume.xml"),

using for over a single node is rather odd in xquery (it means the same
as let, it's needed in Xpath2 which lacks the let clause, but not here)

$head in $project//projection


here again I think you intended let rather than for, using for means
that $head gets bound, on each iteration, to a single projection
element, so count($head) is always going to be 1.

Conversely
let $head := $project//projection

would bind $head to the sequence of elements so count() would do
something useful.

finally I'm not sure what you intended to sum with sum() but expressions
need to be in {} as otherwise it's just taken as a text node child of
the generated eleemnt.

David

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