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• MERGE Bug with Filtered Indexes

  - by Paul White

  A MERGE statement can fail, and incorrectly report a unique key violation when: The target table uses a unique filtered index; and No key column of the filtered index is updated; and A column from the filtering condition is updated; and Transient key violations are possible Example Tables Say we have…

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• Seeking on a Heap, and Two Useful DMVs

  - by Paul White

  So far in this mini-series on seeks and scans, we have seen that a simple ‘seek’ operation can be much more complex than it first appears.  A seek can contain one or more seek predicates – each of which can either identify at most one row in a unique index (a singleton lookup) or a range of values (a range scan).  When looking at a query…

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• Improving Partitioned Table Join Performance

  - by Paul White

  The query optimizer does not always choose an optimal strategy when joining partitioned tables. This post looks at an example, showing how a manual rewrite of the query can almost double performance, while reducing the memory grant to almost nothing. Test Data The two tables in this example use a common partitioning partition scheme. The…

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• Advanced TSQL Tuning: Why Internals Knowledge Matters

  - by Paul White

  There is much more to query tuning than reducing logical reads and adding covering nonclustered indexes.  Query tuning is not complete as soon as the query returns results quickly in the development or test environments.  In production, your query will compete for memory, CPU, locks, I/O and other resources on the server. …

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• Find earliest and latest dates of specified records from a table using SQL

  - by tonyyeb

  Hi I have a table (in MS SQL 2005) with a selection of dates. I want to be able to apply a WHERE statement to return a group of them and then return which date is the earliest from one column and which one is the latest from another column. Here is an example table: ID StartDate EndDate Person 1 01/03/2010 03/03/2010 Paul 2 …

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• Java exception: "Can't get a Writer while an OutputStream is already in use" when running xAgent

  - by Steve Zavocki

  I am trying to implement Paul Calhoun's Apache FOP solution for creating PDF's from Xpages (from Notes In 9 #102). I am getting the following java exception when trying to run the xAgent that does the processing -- Can't get a Writer while an OutputStream is already in use The only changes that I have done from Paul's code was to…

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• AJAX response inside jqplot not working

  - by JuanGesino

  I'm trying to render data from an AJAX response as a bar chart with jqplot. To render this bar chart I use two variables: s1 which contains the numbers ex: s1 = [22,67,32,89] ticks which contains the name corresponding to a number inside s1 ex: ticks = ["Jack", "Mary", "Paul", "John"] So my AJAX returns two variables, data1…

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• Cygwin, ssh, and git on Windows Server 2008

  - by Paul

  Hi everyone. I'm trying to setup a git repository on an existing Windows 2008 (R2) server. I have successfully installed Cygwin & added git and ssh to the packages, and everything works perfectly (thanks to Mark for his article on it). I can ssh to localhost on the server, and I can do git operations locally on the…

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• What DBus signal is sent on system suspend?

  - by Paul Robinson

  Hello, I need to detect when a machine is going to sleep in Ubuntu 9.10 and Fedora 13. Both use UPower, so I've been looking on the "org.freedesktop.UPower" DBus bus for such signals. I've been listening for the "sleeping" signal on the UPower bus with the following command: dbus-monitor --system…

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• How do I install the evaluation version of Windows Server 2012R2 VHD within a Windows Server 2008R2 Hyper-V system?

  - by Paul Hale

  I have a windows server 2008R2 running hyper-v. I have downloaded the Windows Server 2012RC DC Version from here... http://technet.microsoft.com/en-us/evalcenter/dn205286.aspx I am "forced" to install a download app that copy's a .vhd file to my chosen directory. The instructions on this page...…

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• Pinging switch results in alternating high/low response times

  - by Paul Pringle

  We have two switches that are behaving strangely. When I ping them the responses alternate between high and low results: C:\Users\paul>ping sw-linksys1 -t Pinging sw-linksys1.sep.com [172.16.254.235] with 32 bytes of data: Reply from 172.16.254.235: bytes=32 time=39ms TTL=64 Reply from…

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• Testing your Web services using the Data Web Services Test Client

  Paul Zikopoulos introduces you to the Data Web Services Test Client that's available in IBM Data Studio Version 1.2 or later

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• Google I/O 2010 - Tech, innovation, CS, & more: A VC panel

  Google I/O 2010 - Tech, innovation, CS, & more: A VC panel Google I/O 2010 - Technology, innovation, computer science, and more: A VC panel Tech Talks Albert Wenger, Chris Dixon, Dave McClure, Brad Feld, Paul Graham, Dick Costolo What do notable tech-minded VCs think about big trends…

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• Chrome Apps Office Hours: Chrome Storage APIs

  Chrome Apps Office Hours: Chrome Storage APIs Ask and vote for questions: goo.gl You spoke, we listened. Join Paul Kinlan, Paul Lewis, Pete LePage, and Renato Dias to learn about the new storage APIs that are available to Chrome Packaged Apps in the next installment of Chrome Apps Office…

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• 9 New BizTalk Wencasts in the Light & Easy Series

  - by Alan Smith

  During the MVP summit in February I managed to catch up with a few of the BizTalk MVPs who had recorded new webcasts for the “BizTalk Light & Easy” series. The 9 new webcasts are online now at CloudCasts. ·         BizTalk 2010 and Windows Azure…

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• Smart Grid Gurus

  - by caroline.yu

  Join Paul Fetherland, AMI director at Hawaiian Electric Company (HECO) and Keith Sturkie, vice president of Information Technology, Mid-Carolina Electric Cooperative (MCEC) on Thursday, April 29 at 12 p.m. EDT for the free "Smart Grid Gurus" Webcast. In this Webcast, underwritten by…

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• Chrome Apps Office Hours: Storage API Deep Dive

  Chrome Apps Office Hours: Storage API Deep Dive Ask and vote for questions at: goo.gl Join us next week as we take a deeper dive into the new storage APIs available to Chrome Packaged Apps. We've invited Eric Bidelman, author of the HTML5 File System API book to join Paul Kinlan,…

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• Java Spotlight Episode 85: Migrating from Spring to JavaEE 6

  - by Roger Brinkley

  Interview with Bert Ertman and Paul Bakker on migrating from Spring to JavaEE 6. Joining us this week on the Java All Star Developer Panel is Arun Gupta, Java EE Guy. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight…

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• Sondage sur l'utilisation des bibliothèques JavaScript, 59 % des développeurs aurait pu finir leur dernier projet sans les utiliser

  [Octobre 2012] Sondage sur l'utilisation des bibliothèques JavaScript par Peter-Paul Koch Peter-Paul Koch est un formateur, consultant et stratège des plate-formes mobile. Il se spécialise dans la compatibilité des navigateurs au niveau des CSS, du JavaScript et du HTML.…

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• Top Ten Things .NET Developers Will Like About Visual Basic 2010

  Paul Kimmel talks about his favorite top ten new features that are being rolled out with this recent Microsoft update of Visual Basic.

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• Top Ten Things .NET Developers Will Like About Visual Basic 2010

  Paul Kimmel writes about his favorite top ten new features that are being rolled out with this recent Microsoft update of Visual Basic.

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• How to extract a record in a text on string match in a file using bash

  - by private

  Hi I have a text file sample.txt as =====record1 title:javabook price:$120 author:john path:d: =====record2 title:.netbook author:paul path:f: =====record3 author:john title:phpbook subject:php path:f: price:$150 =====record4 title:phpbook subject:php path:f: price:$150 …

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• Up Close: "Tough Crowd"

  Paul Dorsey, NYOUG president emeritus, talks about his work with this dynamic user group, and what's next.

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• Optimising Server-Side Paging - Part I

  This article by Paul White presents an optimisation for paging through a wide data set.

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• Writing more efficient xquery code (avoiding redundant iteration)

  - by Coquelicot

  Here's a simplified version of a problem I'm working on: I have a bunch of xml data that encodes information about people. Each person is uniquely identified by an 'id' attribute, but they may go by many names. For example, in one document, I might find <person…

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