XML Editor
Sign up for a WebBoard account Sign Up Keyword Search Search More Options... Options
search
Chat Rooms Chat Help Help News News Log in to WebBoard Log in Not Logged in
Home » Boards » Stylus Studio Developer Network » XQuery Help and Discussion » proper use of fn:distinct-values
Conferences Close Tree View
+ Stylus Studio Feature Requests (1192)
+ Stylus Studio Technical Forum (14621)
+ Website Feedback (249)
+ XSLT Help and Discussion (7625)
- XQuery Help and Discussion (2016)
-> + Problems with FTP upload via X... (3)
-> + What path notation works when ... (6)
-> - Xquery Exception (1)
-> + [java] [Fatal Error] Test.xml:... (2)
-> + unable to produce correct XML ... (2)
-> + where can I find stylusxql uti... (3)
-> + Trouble Mapping Multiple Eleme... (3)
-> - input parameter (1)
-> - set element value (1)
-> + Xquery Performance Issue (21)
-> + Run Xquery Program using Java (3)
-> + XQuery XML to CSV (3)
-> + XQuery MySQL connector (4)
-> + XQuery with JDBC connection is... (3)
-> + Create FTP Server (2)
-> + XQuery Nested Loop Lookup (5)
-> + Xpath using a Variable for [@I... (2)
-> - My xqDoc option is disabled. (1)
-> + Xpath ancestor selection (4)
-> + Exception: sequence of more th... (2)
-- [1-20] [21-40] [41-60] Next
+ Stylus Studio FAQs (159)
+ Stylus Studio Code Samples & Utilities (364)
+ Stylus Studio Announcements (113)
Topic  
Postnext
Neal WaltersSubject: proper use of fn:distinct-values
Author: Neal Walters
Date: 06 Dec 2012 10:41 AM
Originally Posted: 06 Dec 2012 10:22 AM
Haven't touched XQuery in a year or two. I want to get a unique list of all the @fleet attributes in an xml file to see if they match our database.

This works, but is not sorted:
let $doc := .
return fn:distinct-values($doc//@fleet)

I would like to get the same result sorted. I tried the following:

let $doc := .
for $x in $doc//Detail/@fleet
order by $x
return fn:distinct-values($x)

The above ran, but did not give distinct values.


Sample Data:
<Report Name="Active Fuelers Extract">
<table1>
<Detail_Collection>
<Detail last_name="Doe" first_name="John" station="ABE" fleet="B-737" >
<Detail last_name="Doe" first_name="John" station="ABE" fleet="B-738" >
<Detail last_name="Doe" first_name="John" station="ABE" fleet="B-737" >
</Detail_Collection>
</table1>
</Report>

I kept playing with it, and got this to work, but all data is one line (not a major problem, but would rather each line of output have one fleet):
let $doc := .
return fn:distinct-values(
for $x in $doc//Detail/@fleet
order by $x
return $x)

Any advice appreciated.

Could also add literals, and print out something like this:
where fleet = 'B-737' or 'B-738'
so I could actually generate a SQL statement?

Thanks,
Neal Walters

Posttop
Neal WaltersSubject: proper use of fn:distinct-values
Author: Neal Walters
Date: 06 Dec 2012 11:05 AM
Not sure what happened. I pasted this code back into a new query file, and now the values go down the page:

let $doc := .
return fn:distinct-values(
for $x in $doc//Detail/@fleet
order by $x
return $x)

Is the best way to code it though?

Thanks,
Neal

   
Download A Free Trial of Stylus Studio 6 XML Professional Edition Today! Powered by Stylus Studio, the world's leading XML IDE for XML, XSLT, XQuery, XML Schema, DTD, XPath, WSDL, XHTML, SQL/XML, and XML Mapping!  
go

Log In Options

Site Map | Privacy Policy | Terms of Use | Trademarks
Stylus Scoop XML Newsletter:
W3C Member
Stylus Studio® and DataDirect XQuery ™are from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2016 All Rights Reserved.