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 » Stylus Studio Technical Forum » Large xquery dataset.
Conferences Close Tree View
+ Stylus Studio Feature Requests (1192)
- Stylus Studio Technical Forum (14621)
-> - Stylus Studio - Registrar en o... (1)
-> + Stylus Studio - Registrar en o... (2)
-> + Can a pipeline send a file by ... (2)
-> + After Updateing WIN10 to WIN11... (12)
-> + Where do I add the custom java... (3)
-> + Where is the Diagram tab? (5)
-> + Applying XSLT to Word DOCX/XML (2)
-> - CSV conversion via ConvertToXM... (1)
-> + Text symbols in SS not same as... (4)
-> + Exposing xquery as webservice ... (6)
-> + Syntax Identifier (2)
-> + Saving a Converted XML as an X... (5)
-> + Output document cannot be pars... (4)
-> - Archiving output from conversi... (1)
-> + EDIFACT guideline from Stylus ... (3)
-> + CSV file putting all the data ... (5)
-> + Can't install Home version 64b... (5)
-> + presale - Can I covers this sc... (5)
-> + Problem with UNB (5)
-> + Splitting EDIFACT files pipeli... (4)
-- [1-20] [21-40] [41-60] Next
+ Website Feedback (249)
+ XSLT Help and Discussion (7625)
+ XQuery Help and Discussion (2017)
+ Stylus Studio FAQs (159)
+ Stylus Studio Code Samples & Utilities (364)
+ Stylus Studio Announcements (113)
Topic  
Postnext
Steve CoxSubject: Large xquery dataset.
Author: Steve Cox
Date: 28 Nov 2005 09:30 AM
Hi,

I was experimenting with what was effectively a left outer join of two datasets with about 15,000 records each - sharing a key.

I used an xquery for the join similar to:

for $row in /Contact1/row,
$row1 in /Contact2/row
where $row/ACCOUNTNO = $row1/ACCOUNTNO

and pulled out most of the fields for each row (10-15 fields per dataset).

Doing this on a database system where the key is indexed takes 10-15 seconds, using xquery within stylusstudio took nearly 3 hours on a 1GB 3GHz Pentium4. I was wondering if there is any way to speed this up - maybe defining keys in each dataset?

Thanks.
Posttop
(Deleted User) Subject: Large xquery dataset.
Author: (Deleted User)
Date: 28 Nov 2005 10:03 AM
Steve,
These types of optimizations depend entirely on which xquery processor you are using. The Stylus Studio xquery processor has been built as a tool to design, test, and debug xquery programs. Users are normally expected to deploy the application on a different xquery processor which has been designed to be efficient in a production environment.

For you example, the DDXQ xquery processor would optimize this query quite nicely. We suggest you view the video tutorial at:

http://www.stylusstudio.com/videos/ddxqdemo/datadirectxquery.html

Thanks for your comments.
Clyde

   
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.