Can't use just use a predicate that returns the first element in the
sorted sequence? Something like:
let $seq = for $job in doc('x.xml')//job
order by
xs:date(replace($job/StartDate,
"(\d{2})-(\d{2})-(\d{4})", "$3-$1-$2")
) descending
return $job
return $seq[1]
(My apologies if the syntax isn't exact. I haven't written an XQuery for
quite a while.)
-- Ron
On 11/2/2015 5:53 AM, sudheshna iyer wrote:
Thank you very much, Christian. Let me try this..
------------------------------------------------------------------------
*From:* Christian Grün <christian.gr...@gmail.com>
*To:* sudheshna iyer <sudheshnai...@yahoo.com>
*Cc:* "talk@x-query.com" <talk@x-query.com>
*Sent:* Sunday, November 1, 2015 4:26 PM
*Subject:* Re: [xquery-talk] Xquery : Sort and get only the first record
If your XQuery processor supports XQuery Update, this would be one solution:
copy $xml := doc('x.xml')
modify (
delete node subsequence(
for $job in $xml//job
order by xs:date(replace($job/StartDate,
"(\d{2})-(\d{2})-(\d{4})", "$3-$1-$2")
) descending
return $job
, 2)
)
return $xml
Best,
Christian
On Sun, Nov 1, 2015 at 8:51 PM, sudheshna iyer <sudheshnai...@yahoo.com
<mailto:sudheshnai...@yahoo.com>> wrote:
> Team,
>
> I have an xml which has multiple jobs elements. I want to sort the
jobs and
> want to output only the latest job. Note that <EndDate> can be empty
> indicating that it is the current job.
>
> Basically I want to order by jobs/job/EndDate in descending fashion and
> select only the first record..
>
> How do I do that using xquery?
>
> Input request:
> <?xml version="1.0" encoding="UTF-8"?>
> <Request>
> <SessionInfo>
> <uid>qq</uid>
> <pwd>qq</pwd>
> </SessionInfo>
> <Param>
> <CustomerInfo>
> <Contact>
> <Number>123</Number>
> <Name>aaa bbb</Name>
> <Jobs>
> <job>
> <Name>Analyst</Name>
> <Id>1</Id>
> <StartDate>01-01-2015</StartDate>
> <EndDate>08-30-2015</EndDate>
> </job>
> <job>
> <Name>Programmer</Name>
> <Id>2</Id>
> <StartDate>08-31-2015</StartDate>
> <EndDate />
> </job>
> </Jobs>
> </Contact>
> </CustomerInfo>
> </Param>
> </Request>
>
> Expected output:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <Request>
> <SessionInfo>
> <uid>qq</uid>
> <pwd>qq</pwd>
> </SessionInfo>
> <Param>
> <CustomerInfo>
> <Contact>
> <Number>123</Number>
> <Name>aaa bbb</Name>
> <Jobs>
> <job>
> <Name>Programmer</Name>
> <Id>2</Id>
> <StartDate>08-31-2015</StartDate>
> <EndDate/>
> </job>
> </Jobs>
> </Contact>
> </CustomerInfo>
> </Param>
> </Request>
>
> Your help is greatly appreciated.
>
>
>
>
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